Last data update: Jan 13, 2025. (Total: 48570 publications since 2009)
Records 1-30 (of 55 Records) |
Query Trace: Bush T[original query] |
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Racial and ethnic disparities in phthalate exposure and preterm birth: A pooled study of sixteen U.S. Cohorts
Welch BM , Keil AP , Buckley JP , Engel SM , James-Todd T , Zota AR , Alshawabkeh AN , Barrett ES , Bloom MS , Bush NR , Cordero JF , Dabelea D , Eskenazi B , Lanphear BP , Padmanabhan V , Sathyanarayana S , Swan SH , Aalborg J , Baird DD , Binder AM , Bradman A , Braun JM , Calafat AM , Cantonwine DE , Christenbury KE , Factor-Litvak P , Harley KG , Hauser R , Herbstman JB , Hertz-Picciotto I , Holland N , Jukic AMZ , McElrath TF , Meeker JD , Messerlian C , Michels KB , Newman RB , Nguyen RHN , O'Brien KM , Rauh VA , Redmon B , Rich DQ , Rosen EM , Schmidt RJ , Sparks AE , Starling AP , Wang C , Watkins DJ , Weinberg CR , Weinberger B , Wenzel AG , Wilcox AJ , Yolton K , Zhang Y , Ferguson KK . Environ Health Perspect 2023 131 (12) 127015 BACKGROUND: Phthalate exposures are ubiquitous during pregnancy and may contribute to racial and ethnic disparities in preterm birth. OBJECTIVES: We investigated race and ethnicity in the relationship between biomarkers of phthalate exposure and preterm birth by examining: a) how hypothetical reductions in racial and ethnic disparities in phthalate metabolites might reduce the probability of preterm birth; and b) exposure-response models stratified by race and ethnicity. METHODS: We pooled individual-level data on 6,045 pregnancies from 16 U.S. cohorts. We investigated covariate-adjusted differences in nine urinary phthalate metabolite concentrations by race and ethnicity [non-Hispanic White (White, 43%), non-Hispanic Black (Black, 13%), Hispanic/Latina (38%), and Asian/Pacific Islander (3%)]. Using g-computation, we estimated changes in the probability of preterm birth under hypothetical interventions to eliminate disparities in levels of urinary phthalate metabolites by proportionally lowering average concentrations in Black and Hispanic/Latina participants to be approximately equal to the averages in White participants. We also used race and ethnicity-stratified logistic regression to characterize associations between phthalate metabolites and preterm birth. RESULTS: In comparison with concentrations among White participants, adjusted mean phthalate metabolite concentrations were consistently higher among Black and Hispanic/Latina participants by 23%-148% and 4%-94%, respectively. Asian/Pacific Islander participants had metabolite levels that were similar to those of White participants. Hypothetical interventions to reduce disparities in metabolite mixtures were associated with lower probabilities of preterm birth for Black [13% relative reduction; 95% confidence interval (CI): - 34%, 8.6%] and Hispanic/Latina (9% relative reduction; 95% CI: - 19%, 0.8%) participants. Odds ratios for preterm birth in association with phthalate metabolites demonstrated heterogeneity by race and ethnicity for two individual metabolites (mono-n-butyl and monoisobutyl phthalate), with positive associations that were larger in magnitude observed among Black or Hispanic/Latina participants. CONCLUSIONS: Phthalate metabolite concentrations differed substantially by race and ethnicity. Our results show hypothetical interventions to reduce population-level racial and ethnic disparities in biomarkers of phthalate exposure could potentially reduce the probability of preterm birth. https://doi.org/10.1289/EHP12831. |
Notes from the field: Asthma-associated emergency department visits during a wildfire smoke event - New York, June 2023
Meek HC , Aydin-Ghormoz H , Bush K , Muscatiello N , McArdle CE , Weng CX , Hoefer D , Hsu WH , Rosenberg ES . MMWR Morb Mortal Wkly Rep 2023 72 (34) 933-935 During June 6–8, 2023, smoke from Eastern Canadian wildfires caused poor air quality across New York, driven by concentrations of particulate matter with aerodynamic diameter ≤2.5 µm (PM2.5)*; air quality index reached “unhealthy” or “very unhealthy” levels across the state.† PM2.5 from wildfire smoke is associated with an increased risk for medical emergencies, including asthma exacerbations (1). Characterizing such health outcomes during this wildfire smoke event can guide current and future response efforts. |
A distinct cross-reactive autoimmune response in multisystem inflammatory syndrome in children (MIS-C) (preprint)
Bodansky A , Sabatino JJ , Vazquez SE , Chou J , Novak T , Moffitt KL , Miller HS , Kung AF , Rackaityte E , Zamecnik CR , Rajan JV , Kortbawi H , Mandel-Brehm C , Mitchell A , Wang CY , Saxena A , Zorn K , Yu DJL , Asaki J , Pluvinage JV , Wilson MR , Loftis LL , Hobbs CV , Tarquinio KM , Kong M , Fitzgerald JC , Espinal PS , Walker TC , Schwartz SP , Crandall H , Irby K , Staat MA , Rowan CM , Schuster JE , Halasa NB , Gertz SJ , Mack EH , Maddux AB , Cvijanovich NZ , Zinter MS , Zambrano LD , Campbell AP , Randolph AG , Anderson MS , DeRisi JL , Kelley H , Murdock M , Colston C , Typpo KV , Sanders RC , Yates M , Smith C , Port E , Mansour R , Shankman S , Baig N , Zorensky F , Chatani B , McLaughlin G , Jones K , Coates BM , Newhams MM , Kucukak S , McNamara ER , Moon HK , Kobayashi T , Melo J , Jackson SR , Rosales MKE , Young C , Chen SR , Da Costa Aguiar R , Gutierrez-Arcelus M , Elkins M , Williams D , Williams L , Cheng L , Zhang Y , Crethers D , Morley D , Steltz S , Zakar K , Armant MA , Ciuculescu F , Flori HR , Dahmer MK , Levy ER , Behl S , Drapeau NM , Kietzman A , Hill S , Cullimore ML , McCulloh RJ , Nofziger RA , Rohlfs CC , Burnett R , Bush J , Reed N , Ampofo KK , Patel MM . medRxiv 2023 30 Multisystem inflammatory syndrome in children (MIS-C) is a severe, post-infectious sequela of SARS-CoV-2 infection, yet the pathophysiological mechanism connecting the infection to the broad inflammatory syndrome remains unknown. Here we leveraged a large set of MIS-C patient samples (n=199) to identify a distinct set of host proteins that are differentially targeted by patient autoantibodies relative to matched controls. We identified an autoreactive epitope within SNX8, a protein expressed primarily in immune cells which regulates an antiviral pathway associated with MIS-C pathogenesis. In parallel, we also probed the SARS-CoV-2 proteome-wide MIS-C patient antibody response and found it to be differentially reactive to a distinct domain of the SARS-CoV-2 nucleocapsid (N) protein relative to controls. This viral N region and the mapped SNX8 epitope bear remarkable biochemical similarity. Furthermore, we find that many children with anti-SNX8 autoantibodies also have T-cells cross-reactive to both SNX8 and this distinct domain of the SARS-CoV-2 N protein. Together, these findings suggest that MIS-C patients develop a distinct immune response against the SARS-CoV-2 N protein that is associated with cross reactivity to the self-protein SNX8, demonstrating a link from the infection to the inflammatory syndrome. Copyright The copyright holder for this preprint is the author/funder, who has granted medRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC 4.0 International license. |
xenoGI 3: using the DTLOR model to reconstruct the evolution of gene families in clades of microbes
Liu N , Gonzalez TA , Fischer J , Hong C , Johnson M , Mawhorter R , Mugnatto F , Soh R , Somji S , Wirth JS , Libeskind-Hadas R , Bush EC . BMC Bioinformatics 2023 24 (1) 295 To understand genome evolution in a group of microbes, we need to know the timing of events such as duplications, deletions and horizontal transfers. A common approach is to perform a gene-tree / species-tree reconciliation. While a number of software packages perform this type of analysis, none are geared toward a complete reconstruction for all families in an entire clade. Here we describe an update to the xenoGI software package which allows users to perform such an analysis using the newly developed DTLOR (duplication-transfer-loss-origin-rearrangement) reconciliation model starting from genome sequences as input. |
Environmental Public Health Tracking, an untapped resource for occupational health
Namulanda G , Monti M , Werner A , Nogueira I , Solomon G , English P , Karlsson N , Cosser A , Bush K , Mitchell C . J Occup Environ Hyg 2022 19 1-9 The cornerstone of the Centers for Disease Control and Prevention’s (CDC) Environmental Public Health Tracking Program (Tracking Program) is the Environmental Public Health Tracking Network (Tracking Network)—a web-based system with components at the local, state, and national levels (Qualters et al. Citation2015). The Tracking Network brings together standardized data on environmental hazards, exposures to these hazards, potentially related health effects, and other data such as socioeconomic and risk factors (CDC Citation2021). The Tracking Program uses these data to perform environmental public health surveillance activities, such as identifying and assessing the distribution of hazards in the environment and the health effects resulting from exposure to these hazards, to provide information that can be used to improve the public’s health (Qualters et al. Citation2015; Eatman and Strosnider Citation2017). The CDC’s National Institute for Occupational Safety and Health (NIOSH) surveillance programs perform similar activities but with workers as their target population, and with the goal to improve worker safety and health (Thomsen et al. Citation2007; NIOSH Citation2022a). |
Associations between prenatal urinary biomarkers of phthalate exposure and preterm birth: A pooled study of 16 US cohorts
Welch BM , Keil AP , Buckley JP , Calafat AM , Christenbury KE , Engel SM , O'Brien KM , Rosen EM , James-Todd T , Zota AR , Ferguson KK , Alshawabkeh AN , Cordero JF , Meeker JD , Barrett ES , Bush NR , Nguyen RHN , Sathyanarayana S , Swan SH , Cantonwine DE , McElrath TF , Aalborg J , Dabelea D , Starling AP , Hauser R , Messerlian C , Zhang Y , Bradman A , Eskenazi B , Harley KG , Holland N , Bloom MS , Newman RB , Wenzel AG , Braun JM , Lanphear BP , Yolton K , Factor-Litvak P , Herbstman JB , Rauh VA , Drobnis EZ , Sparks AE , Redmon JB , Wang C , Binder AM , Michels KB , Baird DD , Jukic AMZ , Weinberg CR , Wilcox AJ , Rich DQ , Weinberger B , Padmanabhan V , Watkins DJ , Hertz-Picciotto I , Schmidt RJ . JAMA Pediatr 2022 176 (9) 895-905 IMPORTANCE: Phthalate exposure is widespread among pregnant women and may be a risk factor for preterm birth. OBJECTIVE: To investigate the prospective association between urinary biomarkers of phthalates in pregnancy and preterm birth among individuals living in the US. DESIGN, SETTING, AND PARTICIPANTS: Individual-level data were pooled from 16 preconception and pregnancy studies conducted in the US. Pregnant individuals who delivered between 1983 and 2018 and provided 1 or more urine samples during pregnancy were included. EXPOSURES: Urinary phthalate metabolites were quantified as biomarkers of phthalate exposure. Concentrations of 11 phthalate metabolites were standardized for urine dilution and mean repeated measurements across pregnancy were calculated. MAIN OUTCOMES AND MEASURES: Logistic regression models were used to examine the association between each phthalate metabolite with the odds of preterm birth, defined as less than 37 weeks of gestation at delivery (n=539). Models pooled data using fixed effects and adjusted for maternal age, race and ethnicity, education, and prepregnancy body mass index. The association between the overall mixture of phthalate metabolites and preterm birth was also examined with logistic regression. G-computation, which requires certain assumptions to be considered causal, was used to estimate the association with hypothetical interventions to reduce the mixture concentrations on preterm birth. RESULTS: The final analytic sample included 6045 participants (mean [SD] age, 29.1 [6.1] years). Overall, 802 individuals (13.3%) were Black, 2323 (38.4%) were Hispanic/Latina, 2576 (42.6%) were White, and 328 (5.4%) had other race and ethnicity (including American Indian/Alaskan Native, Native Hawaiian, >1 racial identity, or reported as other). Most phthalate metabolites were detected in more than 96% of participants. Higher odds of preterm birth, ranging from 12% to 16%, were observed in association with an interquartile range increase in urinary concentrations of mono-n-butyl phthalate (odds ratio [OR], 1.12 [95% CI, 0.98-1.27]), mono-isobutyl phthalate (OR, 1.16 [95% CI, 1.00-1.34]), mono(2-ethyl-5-carboxypentyl) phthalate (OR, 1.16 [95% CI, 1.00-1.34]), and mono(3-carboxypropyl) phthalate (OR, 1.14 [95% CI, 1.01-1.29]). Among approximately 90 preterm births per 1000 live births in this study population, hypothetical interventions to reduce the mixture of phthalate metabolite levels by 10%, 30%, and 50% were estimated to prevent 1.8 (95% CI, 0.5-3.1), 5.9 (95% CI, 1.7-9.9), and 11.1 (95% CI, 3.6-18.3) preterm births, respectively. CONCLUSIONS AND RELEVANCE: Results from this large US study population suggest that phthalate exposure during pregnancy may be a preventable risk factor for preterm delivery. |
Rapid Increase in Circulation of the SARS-CoV-2 B.1.617.2 (Delta) Variant - Mesa County, Colorado, April-June 2021.
Herlihy R , Bamberg W , Burakoff A , Alden N , Severson R , Bush E , Kawasaki B , Berger B , Austin E , Shea M , Gabrieloff E , Matzinger S , Burdorf A , Nichols J , Goode K , Cilwick A , Stacy C , Staples E , Stringer G . MMWR Morb Mortal Wkly Rep 2021 70 (32) 1084-1087 On May 5, 2021, the Colorado Department of Public Health and Environment (CDPHE) identified the first five COVID-19 cases caused by the SARS-CoV-2 B.1.617.2 (Delta) variant in Mesa County in western Colorado (population 154,933, <3% of the state population). All five initial cases were associated with school settings. Through early June, Mesa County experienced a marked increase in the proportion of Delta variant cases identified through sequencing: the 7-day proportion of sequenced specimens identified as B.1.617.2 in Mesa County more than doubled, from 43% for the week ending May 1 to 88% for the week ending June 5. As of June 6, more than one half (51%) of sequenced B.1.617.2 specimens in Colorado were from Mesa County. CDPHE assessed data from surveillance, vaccination, laboratory, and hospital sources to describe the preliminary epidemiology of the Delta variant and calculate crude vaccine effectiveness (VE). Vaccination coverage in early May in Mesa County was lower (36% of eligible residents fully vaccinated) than that in the rest of the state (44%). Compared with that in all other Colorado counties, incidence, intensive care unit (ICU) admissions, and COVID-19 case fatality ratios were significantly higher in Mesa County during the analysis period, April 27-June 6, 2021. In addition, during the same time period, the proportion of COVID-19 cases in persons who were fully vaccinated (vaccine breakthrough cases) was significantly higher in Mesa County compared with that in all other Colorado counties. Estimated crude VE against reported symptomatic infection for a 2-week period ending June 5 was 78% (95% confidence interval [CI] = 71%-84%) for Mesa County and 89% (95% CI = 88%-91%) for other Colorado counties. Vaccination is a critical strategy for preventing infection, serious illness, and death from COVID-19. Enhanced mitigation strategies, including masking in indoor settings irrespective of vaccination status, should be considered in areas with substantial or high case rates. |
Retention in Medical Care Among Insured Adolescents and Young Adults With Diagnosed HIV Infection, United States, 2010-2014
Tanner MR , Bush T , Nesheim SR , Weidle PJ , Byrd KK . Public Health Rep 2021 137 (4) 333549211023266 OBJECTIVES: Retention in care is a critical component of effective HIV treatment, and adolescents and young adults are at higher risk of inadequate retention than older adults. The objective of our study was to examine the patterns of retention in care among adolescents and young adults with HIV infection by analyzing Medicaid and commercial health insurance claims data. METHODS: We evaluated retention in care for HIV-diagnosed adolescents and young adults aged 13-24 using the 2010-2014 MarketScan Medicaid and MarketScan Commercial Claims health insurance databases. The study period extended 36 months from the date of the first claim with a code for HIV or AIDS. We determined the unweighted proportion retained in care for the Medicaid and Commercial Claims cohorts for months 0-24 and 25-36. We assessed associations between demographic characteristics and retention in care using logistic regression. RESULTS: A total of 378 adolescents and young adults were in the Medicaid cohort and 1028 in the Commercial Claims cohort. In the Medicaid and Commercial Claims cohorts, respectively, 186 (49%) and 591 (57%) adolescents and young adults were retained in care during months 0-24. In the Medicaid cohort, 113 (73%) people retained in care and 69 (45%) people not retained in care during months 0-24 were retained in care during months 25-36. In the Commercial Claims cohort, 313 (77%) and 94 (31%) retained and not retained people, respectively, were found to be in care during months 25-36. CONCLUSIONS: Notable proportions of HIV-diagnosed adolescents and young adults are not adequately retained in care; public health interventions tailored to this population are needed. |
Workers' compensation claims among private skilled nursing facilities, Ohio, 2001-2012
Bush AM , Reichard AA , Wurzelbacher SJ , Tseng CY , Lampl MP . Am J Ind Med 2020 63 (12) 1155-1168 INTRODUCTION: Skilled nursing facilities have one of the highest rates of occupational injury and illness among all industries. This study quantifies the burden of occupational injury and illness in this industry using data from a single state-based workers' compensation (WC) system. METHODS: Ohio Bureau of Workers' Compensation claims from 2001 to 2012 were analyzed among privately owned, state-insured skilled nursing facilities and are presented as claim counts and rates per 100 full-time equivalents (FTE). Worker, employer, incident, and injury characteristics were examined among all claims and by medical-only (medical care expenses and/or less than eight days away from work) and lost-time (eight days or more away from work) claim types. RESULTS: There were 56,442 claims in this population of Ohio skilled nursing facilities from 2001 to 2012. Overexertion and bodily reaction, slips, trips, and falls, and contact with objects and equipment accounted for the majority of all WC claims (89%). Overexertion and bodily reaction, and slips, trips, and falls comprised 85% of the 10,793 lost-time claims. The highest injury event/exposure rates for all claims were for overexertion and bodily reaction (3.7 per 100 FTE for all claims), followed by slip, trips, and falls (2.1), and contact with objects and equipment (1.9). CONCLUSION: Understanding the details surrounding injury events and exposures resulting in WC claims can help better align prevention efforts, such as incorporation of safe patient handling policies and lifting aids, improvement in housekeeping practices, and employee training within skilled nursing facilities to prevent worker injury and mitigate related expenses. |
Sharing the cure: Building primary care and public health infrastructure to improve the hepatitis C care continuum in Maryland
Irvin R , Ntiri-Reid B , Kleinman M , Agee T , Hitt J , Anaedozie O , Arowolo T , Cassidy-Stewart H , Bush C , Wilson LE , Millman AJ , Nelson NP , Canary L , Brinkley S , Moon J , Falade-Nwulia O , Sulkowski MS , Thomas DL , Melia MT . J Viral Hepat 2020 27 (12) 1388-1395 In 2014, trained health care provider capacity was insufficient to deliver care to an estimated 70,000 persons in Maryland with chronic hepatitis C virus (HCV) infection. The goal of Maryland Community Based Programs to Test and Cure Hepatitis C, a public health implementation project, was to improve HCV treatment access by expanding the workforce. Sharing the Cure (STC) was a package of services deployed 10/1/14 to 9/30/18 that included enhanced information technology and public health infrastructure, primary care provider training, and practice transformation. Nine primary care sites enrolled. HCV clinical outcomes were documented among individuals who presented for care at sites and met criteria for HCV testing including risk factor or birth cohort (born between 1945 and 1965) based testing. Fifty-three providers completed the STC training. STC providers identified 3,237 HCV antibody positive patients of which 2,624 (81%) were RNA+. Of those HCV RNA+, 1,739 (66%) were staged, 932 (36%) were prescribed treatment, 838 (32%) started treatment, 721 (28%) completed treatment, and 543 (21%) achieved cure. Among 1,739 patients staged, 693 (40%) patients had a liver fibrosis assessment score < F2, rendering them ineligible for treatment under Maryland Medicaid guidelines. HCV RNA testing among HCV antibody positive people increased from 40% (baseline) to 95% amongst STC providers. Of 554 patients with virologic data reported, 543 (98%) achieved cure. Primary care practices can effectively serve as HCV treatment centers to expand treatment access. However, criteria by insurance providers in Maryland was a major barrier to treatment. |
Do violence acceptance and bystander actions explain the effects of green dot on reducing violence perpetration in high schools
Bush HM , Coker AL , DeGue S , Clear ER , Brancato CJ , Fisher BS . J Interpers Violence 2019 36 10753-10774 This study extends prior analyses from a 5-year multisite cluster-randomized controlled trial to examine how the previously reported effects of the Green Dot bystander-based prevention program worked to reduce violence perpetration. Bystander-based interventions are hypothesized to prevent violence by reducing violence acceptance and increasing trained participants' willingness and ability to actively engage others in violence prevention using safe and effective bystander actions to diffuse or avoid potentially violent situations. We tested this hypothesis by examining whether Green Dot worked to reduce violence through two mediators measured over time: reducing violence acceptance and increasing bystander actions. When accounting for changes in these mediators over time, the effect of this intervention on violence perpetration was hypothesized to be attenuated or explained. At baseline (spring 2010) and annually (2011-2014), all students in recruited high schools (13 intervention, 13 control) completed an anonymous survey (response rate = 83.9%). Student responses were aggregated as school-level counts for the analysis. Path analyses estimated direct and indirect effects at specific points in the implementation of the intervention. Longitudinal models were used to determine if changes in violence acceptance and bystander actions could explain or attenuate the effect of the intervention. Time-framed path model analyses indicated that the intervention worked as expected to increase bystander behaviors and reduce violence acceptance; both potential mediators were significantly associated with sexual violence perpetration. In addition, after adjusting intent-to-treat models for the hypothesized mediators, the intervention was no longer associated with violence perpetration. In conclusion, these findings indicate that this bystander intervention worked as hypothesized to reduce sexual violence perpetration by creating theory-based changes in students' violence acceptance and bystander actions. |
Prevalence, incidence, and clearance of human papillomavirus types covered by current vaccines in men with human immunodeficiency virus in the SUN Study
Patel P , Bush T , Conley L , Unger ER , Darragh TM , Henry K , Escota G , Brooks JT , Kojic EM . J Infect Dis 2019 222 (2) 234-242 BACKGROUND: High-risk anal human papillomavirus (HPV) infection is prevalent among men living with human immunodeficiency virus (HIV); the association between 9-valent (9v) high-risk HPV (HR-HPV) vaccine types and abnormal cytology has not been well characterized. METHODS: We followed a prospective cohort study of persons with HIV at 7 HIV clinics in 4 US cities from March 2004 through June 2012. Annually, providers collected separate anal swabs for HPV detection and cytopathologic examination. Among men, we examined prevalence, incidence, and clearance of 9v HR-HPV vaccine types, compared with other HR types, and associations with abnormal cytology to assess potential vaccine impact. RESULTS: Baseline prevalence of any anal 9v HR-HPV type among men who have sex with men (MSM) and men who have sex with women (MSW) was 74% and 25% (P < .001), respectively. Among 299 MSM, abnormal cytology was detected in 161 (54%) MSM and was associated with the presence of any 9v HR-HPV (relative risk [RR], 1.8 [95% confidence interval {CI}, 1.3-2.6]; P < .001). Among 61 MSW, abnormal anal cytology was detected in 12 (20%) and was associated with the presence of any 9v HR-HPV (RR, 4.3 [95% CI, 1.6-11.5]; P < .001). CONCLUSIONS: Among men with HIV, the prevalence of the 7 HR-HPV types in the 9v vaccine was high and was associated with abnormal cytology. These findings indicate that men with HIV could benefit from prophylactic administration of the 9v HPV vaccine. |
Antiretroviral adherence level necessary for HIV viral suppression using real-world data
Byrd KK , Hou JG , Hazen R , Kirkham H , Suzuki S , Clay PG , Bush T , Camp NM , Weidle PJ , Delpino A . J Acquir Immune Defic Syndr 2019 82 (3) 245-251 BACKGROUND: A benchmark of near-perfect adherence (>/=95%) to antiretroviral therapy (ART) is often cited as necessary for HIV viral suppression. However, given newer, more effective ART medications the threshold for viral suppression might be lower. We estimated the minimum ART adherence level necessary to achieve viral suppression. SETTINGS: The Patient-centered HIV Care Model demonstration project. METHODS: Adherence to ART was calculated using the Proportion of Days Covered (PDC) measure for the 365-day period prior to each viral load test result, and grouped into five categories (<50%, 50%-<80%, 80%-<85%, 85%-<90%, and >/=90%). Binomial regression analyses were conducted to determine factors associated with viral suppression (HIV RNA <200 copies/mL); demographics, PDC category and ART regimen type were explanatory variables. Generalized estimating equations with an exchangeable working correlation matrix accounted for correlation within subjects. In addition, probit regression models were used to estimate adherence levels required to achieve viral suppression in 90% of HIV viral load tests. RESULTS: The adjusted odds of viral suppression did not differ between persons with an adherence level of 80%-<85% or 85%-<90% and those with an adherence level of >/=90%. Additionally, the overall estimated adherence level necessary to achieve viral suppression in 90% of viral load tests was 82% and varied by regimen type; integrase inhibitor- and non-nucleoside reverse transcriptase inhibitor-based regimens achieved 90% viral suppression with adherence levels of 75% and 78%, respectively. CONCLUSIONS: The ART adherence level necessary to reach HIV viral suppression may be lower than previously thought and may be regimen dependent. |
Lower serum adiponectin level is associated with lipodystrophy among HIV-infected men in the Study to Understand the Natural History of HIV/AIDS in the Era of Effective Therapy (SUN) study
Klos B , Patel P , Rose C , Bush T , Conley L , Kojic EM , Henry K , Brooks JT , Hammer J . HIV Med 2019 20 (8) 534-541 OBJECTIVES: Adiponectin levels are inversely related to cardiovascular risk and are low in diabetics and obese persons. We examined the association between adiponectin concentration and HIV-associated lipodystrophy, which remains unclear. METHODS: The Study to Understand the Natural History of HIV/AIDS in the Era of Effective Therapy (SUN) was a prospective cohort study of HIV-infected adults conducted in four US cities. Lean body and fat masses were assessed using dual-energy X-ray absorptiometry scans. Using baseline data from 2004 to 2006, we defined lipodystrophy using a sex-specific fat mass ratio and performed cross-sectional analyses of associated risks using multivariable logistic regression. RESULTS: Among 440 male participants (median age 42 years; 68% non-Hispanic white; 88% prescribed combination antiretroviral therapy; median CD4 lymphocyte count 468 cells/muL; 76% with viral load < 400 HIV-1 RNA copies/mL; 5% diabetic; median body mass index 25 kg/m(2) ), median concentrations of leptin and adiponectin were 3.04 ng/L [interquartile range (IQR) 1.77-5.43 ng/L] and 8005 mug/mL (IQR 4950-11 935 mug/mL), respectively. The prevalence of lipodystrophy was 14%. Lipodystrophy was significantly associated with increasing age [prevalence ratio (PR) 1.50; 95% confidence interval (CI) 1.10-2.06, per 10 years], adiponectin < 8005 mug/mL (PR 5.02; 95% CI 2.53-9.95), ever stavudine use (PR 2.26; 95% CI 1.36-3.75), CD4 cell count > 500 cells/muL (PR 2.59; 95% CI 1.46-4.61), viral load < 400 copies/mL (PR 3.98; 95% CI 1.25-12.6), highly sensitive C-reactive protein < 1.61 mg/L (PR 1.91; 95% CI 1.11-3.28) and smoking (PR 0.42; 95% CI 0.22-0.78). CONCLUSIONS: Among men in this HIV-infected cohort, the prevalence of lipodystrophy was similar to previous estimates for persons living with HIV, and was associated with lower adiponectin levels, potentially indicating increased cardiovascular disease risk. |
Aging attenuates the association between coronary artery calcification and bone loss among HIV-infected persons
Escota G , Baker J , Bush T , Conley L , Brooks JT , Patel P , Powderly W , Presti R , Overton ET . J Acquir Immune Defic Syndr 2019 82 (1) 46-50 INTRODUCTION: Studies among HIV-uninfected persons (mostly in their sixth decade of life) show that detectable coronary artery calcium (CAC) is independently associated with low bone mineral density (BMD), suggesting a possible common pathogenic mechanism. AIM: We assessed the relationship between CAC and BMD, which has not been well described among younger to middle-aged HIV-infected persons. METHODS: We studied participants with baseline CAC and BMD measures from a prospective cohort of HIV-infected persons enrolled in the Study to Understand the Natural History of HIV/AIDS in the Era of Effective Therapy (SUN) during 2004-2006. We used logistic regression to assess the association between detectable CAC (>0 Agatston score) and BMD (g/cm2, T-score), and adjusted for known traditional and HIV-related risk factors. RESULTS: Among 472 participants (76% male, 30% non-Hispanic black, median age 41 years, 71% with HIV RNA <400 copies/mL), the majority had no detectable CAC (82%), but had baseline osteopenia (53%) or osteoporosis (10%). In univariate analysis, participants with detectable CAC had lower femoral neck/total hip T-scores, lower femoral neck/total hip/lumbar spine BMD, and higher rates of osteopenia/osteoporosis. After adjustment for age, all associations were no longer significant; adjustment for traditional risk factors excluding age and HIV-related variables failed to attenuate these associations. CONCLUSIONS: We found aging attenuates the association between detectable CAC and BMD in this cohort. Aging remains an important contributor to non-AIDS-defining illnesses. These data reinforce the importance of developing screening and prevention strategies for ageing HIV-infected persons given their excess risk across a wide spectrum of end-organ complications. |
Adherence and viral suppression among participants of the Patient-centered HIV Care Model project-a collaboration between community-based pharmacists and HIV clinical providers
Byrd KK , Hou JG , Bush T , Hazen R , Kirkham H , Delpino A , Weidle PJ , Shankle MD , Camp NM , Suzuki S , Clay PG . Clin Infect Dis 2019 70 (5) 789-797 BACKGROUND: HIV viral suppression (VS) decreases morbidity, mortality, and transmission risk. METHODS: The Patient-centered HIV Care Model (PCHCM) integrated community-based pharmacists with HIV medical providers and required them to share patient clinical information, identify therapy-related problems, and develop therapy-related action plans.Proportions of persons adherent to antiretroviral therapy (Proportion of Days Covered [PDC] >/=90%) and virally suppressed (HIV RNA <200 copies/mL), pre- and post-PCHCM implementation, were compared. Factors associated with post-implementation VS were determined using multivariable logistic regression. Participant demographics, baseline viral load (VL), and PDC were explanatory variables in the models. PDC was modified to account for time to last VL in the year post-implementation, and stratified as: >/=90%, <90-80%, <80-50%, <50%. RESULTS: The 765 enrolled participants were 43% non-Hispanic black, 73% male, with a median age of 48 years (interquartile range: 38-55); 421 and 649 were included in the adherence and VS analyses, respectively. Overall, proportions adherent to therapy remained unchanged. However, VS improved a relative 15% (75% to 86%, p<0.001). Persons with higher modified PDC (adjusted odds ratio [AOR] 1.74 per one-level increase in PDC category; 95% CI: 1.30-2.34) and those virally suppressed at baseline (AOR 7.69; CI: 3.96-15.7) had greater odds of post-implementation suppression. Although non-Hispanic black persons (AOR 0.29; CI: 0.12-0.62) had lower odds of suppression, VS improved a relative 23% (63% to 78%, p<0.001), pre- to post-implementation. CONCLUSION: Integrated care models between community-based pharmacists and primary medical providers may identify and address HIV therapy-related problems and improve overall VS among persons with HIV. |
Prevalence and incidence of anal and cervical high-risk human papillomavirus (HPV) types covered by current HPV vaccines among HIV-infected women in the Study to Understand the Natural History of HIV/AIDS in the Era of Effective Therapy (The SUN Study)
Kojic EM , Conley L , Bush T , Cu-Uvin S , Unger ER , Henry K , Hammer J , Escota G , Darragh TM , Palefsky JM , Brooks JT , Patel P . J Infect Dis 2018 217 (10) 1544-1552 Background: Nonavalent (9v) human papilloma virus vaccine targets high-risk (HR)-HPV types 16, 18, 31, 33, 45, 52, 58, and low-risk 6, 11. We examined prevalence, incidence, and clearance of anal and cervical HR-HPV in HIV-infected women. Methods: From 2004-2006, the SUN Study enrolled 167 women from four US cities. Anal and cervical specimens were collected annually for cytology and identification of 37 HPV types; 14 HR include: 9v 16, 18, 31, 33, 45, 52, 58; non-9v 35, 39, 51, 56, 59, 66, 68. Results: Baseline characteristics of 126 women included: median age 38 years; 57% non-Hispanic black; 67% HIV RNA < 400 copies/mL; 90% CD4 counts >/= 200 cells/mm3. HPV prevalence at anus and cervix was 90% and 83%; for 9v HR-HPV types, 67% and 51%; non-9v HR-HPV, 54% and 29%, respectively. 9v and non-9v HR-HPV incidence rates/100 person-years were similar (10.4 vs 9.5: 8.5 vs 8.3, respectively); 9v clearance rates were 42% and 61%; non-9v 46% and 59%, in anus and cervix, respectively. Conclusions: Anal HR-HPV prevalence was higher than cervical with lower clearance; incidence was similar. Although prevalence of non-9v HR-HPV was substantial, 9v HR-HPV types were generally more prevalent. These findings support use of nonavalent vaccine in HIV-infected women. |
Prevalence, incidence, and clearance of anal high-risk human papillomavirus infection among HIV-infected men in the SUN Study
Patel P , Bush T , Kojic EM , Conley L , Unger ER , Darragh TM , Henry K , Hammer J , Escota G , Palefsky JM , Brooks JT . J Infect Dis 2017 217 (6) 953-963 Background: The natural history of anal HPV infection among HIV-infected men is unknown. Methods: We collected anal swabs for cytology, HPV detection, and genotyping at annual visits from 2004-2012. We examined baseline prevalence, incidence and clearance of anal HPV infection at 48 months, and associated factors among HIV-infected men. Results: We examined 403 men who have sex with men (MSM) and 96 men who have sex with women (MSW) (median age 42 years for both, 87 vs. 91% were prescribed cART, median CD4 cell count was 454 vs. 379 cells/mm3, and 74 vs. 75% had undetectable viral load, respectively). For type 16, prevalence among MSM and MSW was 38% vs. 14% (p<0.001), and incidence was 24% vs. 6% (p=0.001), respectively. For type 18, prevalence was 24% vs. 8% (p<0.001), and incidence was 14% vs. 3% (p=0.009), respectively. Among MSM and MSW, clearance of prevalent HPV 16 and HPV 18 was 51% and 66% (p=0.682), and 69% and 60% (p=0.538), respectively. Condomless receptive anal sex was associated with persistent HPV 16 among all men (OR 2.37, p=0.014). Conclusions: MSM had higher prevalence and incidence of HPV than MSW, but similar clearance. Condomless anal sex may predict cancer risk among HIV-infected men. |
Do persons living with HIV continue to fill prescriptions for antiretroviral drugs during a gap in care? Analysis of a large commercial claims database
Byrd KK , Bush T , Gardner LI . J Int Assoc Provid AIDS Care 2017 16 (6) 2325957417729750 The significance of a gap in HIV care depends, at least partially, on whether patients continue to fill prescriptions for antiretroviral (ARV) drugs during the gap in care. We used a billing claims database to determine the proportion of persons who filled ≥1 prescription for ARV drugs during a gap in care (no clinic visit in >6 months). Persons were stratified into 3 groups: "never" (prescriptions never filled), "sometimes" (prescriptions filled >0%-<100% of months), and "always" (prescriptions filled monthly). Logistic regression analyses were conducted to determine factors associated with "never" filling ARV drugs. Of 14 308 persons, 69% (n = 9817), 13% (n = 1928), and 18% (n = 2563) "never," "sometimes," and "always" filled ARV drugs during the gap in care. Persons aged 18 to 29 years (odds ratio [OR] = 1.56, 95% confidence interval [CI] 1.39-1.74), women (OR = 1.67, CI 1.52-1.83), and persons from the Northeast region of the United States (OR = 1.86, CI 1.69-2.03) were more likely to never fill ARV drugs than persons aged ≥30 years, men, and persons outside the Northeast, respectively. Efforts should be made to minimize gaps in care, emphasize importance of therapy, and provide adherence support. |
RCT testing bystander effectiveness to reduce violence
Coker AL , Bush HM , Cook-Craig PG , DeGue SA , Clear ER , Brancato CJ , Fisher BS , Recktenwald EA . Am J Prev Med 2017 52 (5) 566-578 INTRODUCTION: Bystander-based programs have shown promise to reduce interpersonal violence at colleges, yet limited rigorous evaluations have addressed bystander intervention effectiveness in high schools. This study evaluated the Green Dot bystander intervention to reduce sexual violence and related forms of interpersonal violence in 26 high schools over 5 years. DESIGN: A cluster RCT was conducted. SETTING/PARTICIPANTS: Kentucky high schools were randomized to intervention or control (wait list) conditions. INTERVENTION: Green Dot-trained educators conducted schoolwide presentations and recruited student popular opinion leaders to receive bystander training in intervention schools beginning in Year 1. MAIN OUTCOME MEASURES: The primary outcome was sexual violence perpetration, and related forms of interpersonal violence victimization and perpetration were also measured using anonymous student surveys collected at baseline and annually from 2010 to 2014. Because the school was the unit of analysis, violence measures were aggregated by school and year and school-level counts were provided. RESULTS: A total of 89,707 students completed surveys. The primary, as randomized, analyses conducted in 2014-2016 included linear mixed models and generalized estimating equations to examine the condition-time interaction on violence outcomes. Slopes of school-level totals of sexual violence perpetration (condition-time, p<0.001) and victimization (condition-time, p<0.001) were different over time. During Years 3-4, when Green Dot was fully implemented, the mean number of sexual violent events prevented by the intervention was 120 in Intervention Year 3 and 88 in Year 4. For Year 3, prevalence rate ratios for sexual violence perpetration in the intervention relative to control schools were 0.83 (95% CI=0.70, 0.99) in Year 3 and 0.79 (95% CI=0.67, 0.94) in Year 4. Similar patterns were observed for sexual violence victimization, sexual harassment, stalking, and dating violence perpetration and victimization. CONCLUSIONS: Implementation of Green Dot in Kentucky high schools significantly decreased not only sexual violence perpetration but also other forms of interpersonal violence perpetration and victimization. |
Folic acid education for Hispanic women: The Promotora de Salud Model
Flores AL , Isenburg J , Hillard CL , deRosset L , Colen L , Bush T , Mai CT . J Womens Health (Larchmt) 2017 26 (2) 186-194 BACKGROUND: Although rates of neural tube defects (NTDs) have declined in the United States since fortification, disparities still exist with Hispanic women having the highest risk of giving birth to a baby with a NTD. The Promotora de Salud model using community lay health workers has been shown to be an effective tool for reaching Hispanics for a variety of health topics; however, literature on its effectiveness in folic acid interventions is limited. MATERIALS AND METHODS: An intervention using the Promotora de Salud model was implemented in four U.S. counties with large populations of Hispanic women. The study comprised the following: (1) a written pretest survey to establish baseline levels of folic acid awareness, knowledge, and consumption; (2) a small group education intervention along with a 90-day supply of multivitamins; and (3) a postintervention (posttest) assessment conducted 4 months following the intervention. RESULTS: Statistically significant differences in pre- and posttests were observed for general awareness about folic acid and vitamins and specific knowledge about the benefits of folic acid. Statistically significant changes were also seen in vitamin consumption and multivitamin consumption. Folic acid supplement consumption increased dramatically by the end of the study. CONCLUSIONS: The Promotora de Salud model relies on interpersonal connections forged between promotoras and the communities they serve to help drive positive health behaviors. The findings underscore the positive impact that these interpersonal connections can have on increasing awareness, knowledge, and consumption of folic acid. Utilizing the Promotora de Salud model to reach targeted populations might help organizations successfully implement their programs in a culturally appropriate manner. |
Reengagement in care after a gap in HIV care among a population of privately insured persons with HIV in the United States
Byrd KK , Furtado M , Bush T , Gardner L . AIDS Patient Care STDS 2016 30 (11) 491-496 The HIV care continuum illustrates steps needed to reach HIV viral suppression, including retention in care. The continuum's retention measure does not account for gaps or reengagement in care and thus provides an incomplete picture of long-term engagement. We used a claims database to determine the proportion of privately insured persons with HIV who experienced a gap in care and subsequently reengaged between 2008 and 2012. A gap was defined as no office visit claim in >6 months and reengagement as ≥1 office visit claim after a gap. Cox proportional hazards models were conducted to determine factors associated with time to first gap and time to reengagement. Of 5142 persons in the study, 79% were males and median age was 46 years (range, 19-64 years). No race/ethnicity data were available. Thirty percent (n = 1555) experienced a gap. Median time to first gap was 15 months (IQR: 6-30). Median gap length was 3.2 months. Seventy percent with a gap reengaged; 22% reengaged more than once. Of 1086 patients who reengaged, 224 (21%) eventually had a terminal gap. Residence in the North Central region (HR 0.73, 95% CI 0.62-0.87) and having ≥1 Charlson comorbidities (HR 0.85, 95% CI 0.73-0.99) were associated with shorter time to reengagement. The majority who experienced a gap reengaged within a relatively short period and remained in the cohort at 60 months. However, 21% of those reengaging had a terminal gap by 60 months, which should alert providers to the eventual potential for loss to follow-up. The analysis was limited by inability to distinguish between HIV-specific and non-HIV-specific care visits. |
Low bone mineral density and risk of incident fracture in HIV-infected adults
Battalora L , Buchacz K , Armon C , Overton ET , Hammer J , Patel P , Chmiel JS , Wood K , Bush TJ , Spear JR , Brooks JT , Young B . Antivir Ther 2016 21 (1) 45-54 BACKGROUND: Prevalence rates of low bone mineral density (BMD) and bone fractures are higher among HIV-infected adults compared with the general United States (US) population, but the relationship between BMD and incident fractures in HIV-infected persons has not been well described. METHODS: Dual energy X-ray absorptiometry (DXA) results of the femoral neck of the hip and clinical data were obtained prospectively during 2004-2012 from participants in two HIV cohort studies. Low BMD was defined by a T-score in the interval >-2.5 to <-1.0 (osteopenia) or ≤-2.5 (osteoporosis). We analysed the association of low BMD with risk of subsequent incident fractures, adjusted for sociodemographics, other risk factors and covariables, using multivariable proportional hazards regression. RESULTS: Among 1,006 participants analysed (median age 43 years [IQR 36-49], 83% male, 67% non-Hispanic white, median CD4(+) T-cell count 461 cells/mm(3) [IQR 311-658]), 36% (n=358) had osteopenia and 4% (n=37) osteoporosis; 67 had a prior fracture documented. During 4,068 person-years of observation after DXA scanning, 85 incident fractures occurred, predominantly rib/sternum (n=18), hand (n=14), foot (n=13) and wrist (n=11). In multivariable analyses, osteoporosis (adjusted hazard ratio [aHR] 4.02, 95% CI 2.02, 8.01) and current/prior tobacco use (aHR 1.59, 95% CI 1.02, 2.50) were associated with incident fracture. CONCLUSIONS: In this large sample of HIV-infected adults in the US, low baseline BMD was significantly associated with elevated risk of incident fracture. There is potential value of DXA screening in this population. |
Duration of influenza virus shedding among HIV-infected adults in the cART era, 2010-2011
Patel P , Bush T , Kojic EM , Overton ET , Henry K , Onen N , Rhame F , Conley L , Brooks J , Fry A . AIDS Res Hum Retroviruses 2016 32 (12) 1180-1186 The duration of influenza virus shedding in HIV-infected adults is unknown and could affect quarantine and treatment recommendations. Participants were monitored for influenza-like illness (ILI), defined as fever and cough or sore throat, using weekly telephone audio computer-assisted self-interviews. Those with ILI were further evaluated at three HIV-specialty clinics. For those with influenza, we collected nasopharyngeal washes every three days after the date of confirmed influenza infection for 21-28 days; specimens underwent RT-PCR and viral culture. Duration of influenza virus shedding was the interval from the date of onset (day 0) of ILI to the date of last culture-positive specimen. Characteristics were compared between patients with and without influenza using Fisher's exact test. We used the Wilcoxon rank-sum test to examine factors that may have affected influenza virus shedding. From 10/2010 to 4/2011, we enrolled 961 participants in syndromic surveillance and diagnosed 20 patients with influenza whose characteristics were: median age 48 years (interquartile range [IQR]: 43-53), 60% male, 50% non-Hispanic black, 95% had been prescribed cART, 85% were virologically suppressed (HIV RNA <400 copies/mL), median CD4 cell count 317 cells/mm3 (IQR: 190-544), and median follow-up time 21 days (IQR: 19-22). Compared with persons without influenza, persons with influenza were more likely to be older, use injection drugs, have a lower median CD4 cell count, and were less likely to have had an influenza vaccination in the past 12 months. Median durations of shedding, PCR detection, and ILI symptoms were 3 (IQR: 0-5), 10 (IQR: 6-15), and 14 days (IQR: 12-26), respectively. Median days of shedding were similar among patients with and without any prior influenza vaccination (0 vs. 4, p=0.448), HIV viral suppression (2 vs. 6, p=0.053), and oseltamivir use (5 vs. 0, p=0.083). HIV-infected persons on cART in our study shed influenza virus for a similar duration as that reported for HIV-uninfected persons. |
Evaluating patterns in retention, continuation, gaps, and re-engagement in HIV care in a Medicaid-insured population, 2006-2012, United States
Byrd KK , Furtado M , Bush T , Gardner L . AIDS Care 2015 27 (11) 1387-95 We used the US-based MarketScan((R)) Medicaid Multi-state Databases to determine the un-weighted proportion of publically insured persons with HIV that were retained, continued, and re-engaged in care. Persons were followed for up to 84 months. Cox proportional hazards models were conducted to determine factors associated with gaps in care. Of the 6463 HIV cases identified in 2006, 61% were retained during the first 24 months, and 53% continued in care through 78 months. Between 8% and 30% experienced a gap in care, and 59% of persons who experienced a gap in care later re-engaged in care. Persons with one or more Charlson co-morbidities (HR 0.72, 95% CI 0.64-0.81), ages 40-59 (0.79, 0.71-0.88), mental illness diagnosis (0.79, 0.72-0.87), hepatitis C co-infection (0.83, 0.75-0.93), and female sex (0.86, 0.78-0.94) were less likely to experience a gap in care. Between 27% and 38% of those not retained in care continued to receive HIV-related laboratory services. This Medicaid claims database combines features of both clinic visits-based and surveillance lab-based surrogate measures to give a more complete picture of engagement in care than single-facility-based studies. |
Multi-college bystander intervention evaluation for violence prevention
Coker AL , Bush HM , Fisher BS , Swan SC , Williams CM , Clear ER , DeGue S . Am J Prev Med 2015 50 (3) 295-302 INTRODUCTION: The 2013 Campus Sexual Violence Elimination Act requires U.S. colleges to provide bystander-based training to reduce sexual violence, but little is known about the efficacy of such programs for preventing violent behavior. This study provides the first multiyear evaluation of a bystander intervention's campus-level impact on reducing interpersonal violence victimization and perpetration behavior on college campuses. METHODS: First-year students attending three similarly sized public university campuses were randomly selected and invited to complete online surveys in the spring terms of 2010-2013. On one campus, the Green Dot bystander intervention was implemented in 2008 (Intervention, n=2,979) and two comparison campuses had no bystander programming at baseline (Comparison, n=4,132). Data analyses conducted in 2014-2015 compared violence rates by condition over the four survey periods. Multivariable logistic regression was used to estimate violence risk on Intervention relative to Comparison campuses, adjusting for demographic factors and time (2010-2013). RESULTS: Interpersonal violence victimization rates (measured in the past academic year) were 17% lower among students attending the Intervention (46.4%) relative to Comparison (55.7%) campuses (adjusted rate ratio=0.83; 95% CI=0.79, 0.88); a similar pattern held for interpersonal violence perpetration (25.5% in Intervention; 32.2% in Comparison; adjusted rate ratio=0.79; 95% CI=0.71, 0.86). Violence rates were lower on Intervention versus Comparison campuses for unwanted sexual victimization, sexual harassment, stalking, and psychological dating violence victimization and perpetration (p<0.01). CONCLUSIONS: Green Dot may be an efficacious intervention to reduce violence at the community level and meet Campus Sexual Violence Elimination Act bystander training requirements. |
Obesity is associated with greater inflammation and monocyte activation among HIV-infected adults receiving antiretroviral therapy
Conley LJ , Bush TJ , Rupert AW , Sereti I , Patel P , Brooks JT , Baker JV . AIDS 2015 29 (16) 2201-7 OBJECTIVES: Among virally suppressed HIV-infected persons, we examined the relationship between obesity and alterations in key clinical markers of immune activation and inflammation. These markers have also been associated with excess HIV-related cardiovascular disease and mortality. METHODS: We evaluated data from virally suppressed participants in the Study to Understand the Natural History of HIV/AIDS in the Era of Effective Therapy, including inflammatory biomarkers (interleukin-6 and highly sensitive C-reactive protein), monocyte biomarkers [soluble CD163 (sCD163), sCD14], and monocyte immunophenotypes. We assessed associations with these immunologic measures and obesity, via logistic regression preadjustment and postadjustment for demographic and clinical factors, homeostatic model assessment of insulin resistance, and leptin levels. RESULTS: Among 452 evaluable participants, median (interquartile range) age was 41 (36-48) years, CD4 cell count was 475 (308-697) cells/mul, and 21% were obese (BMI ≥ 30 kg/m). In univariable models, obesity, smoking, and lower CD4 cell count were associated with higher measures of inflammation and monocyte activation. After adjustment, obesity remained independently associated with elevated levels (highest vs. lower two tertiles) of interleukin-6 [odds ratio (OR) 1.96; P = 0.02], highly sensitive C-reactive protein (OR 2.79; P < 0.001) and sCD163 (OR 1.94; P = 0.02), and elevated frequency of CD14CD16 (OR 1.77; P = 0.03) and CD14dimCD16 (OR 1.97; P = 0.01). Adjusting for homeostatic model assessment of insulin resistance and leptin modestly affected associations for obesity with inflammation and monocyte activation. CONCLUSION: Obesity was prevalent and independently associated with greater monocyte activation and systemic inflammation. Research is needed to determine how adipose tissue excess is functionally related to persistent immunologic abnormalities among HIV-infected persons with viral suppression. |
High prevalence of low bone mineral density and substantial bone loss over 4 years among HIV-infected persons in the era of modern antiretroviral therapy
Escota GV , Mondy K , Bush T , Conley L , Brooks JT , Onen N , Patel P , Kojic EM , Henry K , Hammer J , Wood KC , Lichtenstein KA , Overton ET . AIDS Res Hum Retroviruses 2015 32 (1) 59-67 HIV-infected persons are living longer on combination antiretroviral therapy (cART) but experiencing more comorbidities including low bone mineral density (BMD). Using data from the Study to Understand the Natural History of HIV and AIDS in the Era of Effective Therapy (SUN Study), we determined the prevalence of low BMD (T-score below one standard deviation of the reference mean) and compared it with matched controls from the National Health and Nutrition Examination Survey (NHANES). We also assessed 4-year longitudinal BMD changes among participants virologically suppressed on cART. Of 653 participants included in this analysis (77% male, 29% black, median age 41 years, median CD4+ cell count 464 cells/mm3, 89% with HIV RNA <400 copies/ml), 51% and 10% had baseline osteopenia and osteoporosis, respectively. Low BMD at the femoral neck was significantly more prevalent than for the NHANES controls (47% versus 29%, p<0.001). Lower body mass index, nonwhite race, longer tenofovir exposure, older age, being unemployed or retired, and lower apolipoprotein E were independently associated with baseline osteoporosis. Among 170 participants virologically suppressed on cART and with longitudinal BMD data, 31% experienced substantial bone loss (≥5% BMD decline from baseline) over 4 years. Female sex, current smoking, and longer stavudine use were more common among participants who had substantial bone loss, although these variables failed to reach statistical significance. Low BMD was highly prevalent among HIV-infected persons. One-third of participants experienced substantial bone loss despite cART, suggesting the need for monitoring and potential clinical interventions. |
Incidence and Predictors of Abnormal Anal Cytology Findings Among HIV-Infected Adults Receiving Contemporary Antiretroviral Therapy
Conley LJ , Bush TJ , Darragh TM , Palefsky JM , Unger ER , Patel P , Steinau M , Kojic EM , Martin H , Overton ET , Cu-Uvin S , Hammer J , Henry K , Wood K , Brooks JT . J Infect Dis 2015 213 (3) 351-60 BACKGROUND: Anal cancer rates are higher for HIV-infected than uninfected adults. Limited published data exist characterizing precursor abnormal anal cytology incidence. METHODS: The Study to Understand the Natural History of HIV/AIDS in the Era of Effective Therapy was a prospective cohort of 700 HIV-infected participants in four U.S. cities. At baseline and annually thereafter, each completed a behavioral questionnaire, and providers collected anorectal swabs for cytologic examination and human papillomavirus (HPV) detection and genotyping. RESULTS: Among 243 participants with negative baseline anal cytology, 37% developed abnormal cytology (incidence rate 13.9/100 person-years [p-y], 95% confidence interval [CI] 11.3 - 16.9) over a median 2.1 years of follow-up. Rates among men having sex with men, women, and men having sex with women, were 17.9 p-y (CI: 13.9 - 22.7), 9.4 p-y (CI: 5.6 - 14.9), 8.9 p-y (CI: 4.8 - 15.6), respectively. In multivariable analysis, number of persistent high-risk HPV (HR) types (adjusted hazards ratio [adjHR] 1.17, CI: 1.01 - 1.36), persistent HR-HPV types except 16 or 18 ([adjHR] 2.46, CI 1.31 - 4.60), and persistent types 16 or 18 (adjHR 3.90, CI: 1.78 - 8.54) remained associated with incident abnormalities. CONCLUSIONS: Abnormal anal cytology incidence was high and more likely to develop among persons with persistent HR-HPV. |
Health care for Americans with disabilities - 25 years after the ADA
Peacock G , Iezzoni LI , Harkin TR . N Engl J Med 2015 373 (10) 892-3 Twenty-five years ago, on July 26, 1990, President George H.W. Bush signed the Americans with Disabilities Act (ADA), designed to meet four goals for people with disabilities: equal opportunity, full participation in the community, independent living, and economic self-sufficiency. This landmark civil rights law aimed to prevent employment discrimination and give equal access to public and private services for all people with disabilities. At the signing ceremony, Bush exclaimed, “Let the shameful wall of exclusion finally come tumbling down.” | Since the passage of the ADA, there have been extensive gains in access to public services, the built environment (e.g., cross-walks with curb cuts for wheel-chair access and accessible pedestrian signals to assist people who are blind or have low vision), and attitudes toward and understanding of the abilities of people with disabilities. The ADA established a right to equal access to public services offered by governments and private providers and has demonstrated the importance of contributions that people with disabilities can make to our economy. |
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