Last data update: Jul 01, 2024. (Total: 47134 publications since 2009)
Records 1-3 (of 3 Records) |
Query Trace: Jones Robert L [original query] |
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The COVID-19 pandemic should not derail global vector control efforts.
Seelig F , Bezerra H , Cameron M , Hii J , Hiscox A , Irish S , Jones RT , Lang T , Lindsay SW , Lowe R , Nyoni TM , Power GM , Quintero J , Stewart-Ibarra AM , Tusting LS , Tytheridge S , Logan JG . PLoS Negl Trop Dis 2020 14 (8) e0008606 The COVID-19 pandemic is placing immense pressure on health systems worldwide. This is particularly apparent in resource-poor settings with limited capacity to treat and contain new disease outbreaks. | | The World Health Organization (WHO) has emphasised the crucial need to sustain efforts to prevent, detect, and treat malaria during this pandemic [1]. However, a similar approach should also be adopted for the control of arboviral diseases of global importance, including dengue, Zika, chikungunya, and yellow fever, as recommended by the Pan-American Health Organization (PAHO) in their interim guidance on control of Aedes aegypti mosquitos during the COVID-19 pandemic [2]. |
Analytical method for total chromium and nickel in urine using an inductively coupled plasma-universal cell technology-mass spectrometer (ICP-UCT-MS) in kinetic energy discrimination (KED) mode
Quarles CDerrick , Jones Deanna R , Jarrett Jeffery M , Shakirova Gulchekhra , Pan Yi , Caldwell Kathleen L , Jones Robert L . J Anal At Spectrom 2014 29 (2) 297-303 Biomonitoring and emergency response measurements are an important aspect of the Division of Laboratory Sciences of the National Center for Environmental Health, Centers for Disease Control and Prevention (CDC). The continuing advancement in instrumentation allows for enhancements to existing analytical methods. Prior to this work, chromium and nickel were analyzed on a sector field inductively coupled plasma-mass spectrometer (SF-ICP-MS). This type of instrumentation provides the necessary sensitivity, selectivity, accuracy, and precision but due to the higher complexity of instrumentation and operation, it is not preferred for routine high throughput biomonitoring needs. Instead a quadrupole based method has been developed on a PerkinElmer NexION 300D ICP-MS. The instrument is operated using 6.0 mL min-1 helium as the collision cell gas and in kinetic energy discrimination mode, interferences are successfully removed for the analysis of 52Cr (40Ar 12C and 35Cl16O1H) and 60Ni (44Ca16O). The limits of detection are 0.162 g L-1 Cr and 0.248 g L-1 Ni. Method accuracy using NIST SRM 2668 level 1 (1.08 g L-1 Cr and 2.31 g L -1 Ni) and level 2 (27.7 g L-1 Cr and 115 g L -1 Ni) was within the 95% confidence intervals reported in the NIST certificate. Among-run precision is less than 10% RSDs (N = 20) for in house quality control and NIST SRM urine samples. While the limits of detection (LOD) for the new quadrupole ICP-UCT-MS with KED method are similar to the SF-ICP-MS method, better measurement precision is observed for the quadrupole method. The new method presented provides fast, accurate, and more precise results on a less complex and more robust ICP-MS platform. 2014 The Royal Society of Chemistry. |
Dietary predictors of maternal prenatal blood mercury levels in the ALSPAC Birth Cohort Study
Golding Jean , Steer Colin D , Hibbeln Joseph R , Emmett Pauline M , Lowery Tony , Jones Robert . Environ Health Perspect 2013 121 (10) 1214-1218 BACKGROUND: Very high levels of prenatal maternal mercury have adverse effects on the developing fetal brain. It has been suggested that all possible sources of mercury should be avoided. However, although seafood is a known source of mercury, little is known about other dietary components that contribute to the overall levels of blood mercury. OBJECTIVE: Our goal was to quantify the contribution of components of maternal diet to prenatal blood mercury level. Methods: Whole blood samples and information on diet and sociodemographic factors were colÂlected from pregnant women (n = 4,484) enrolled in the Avon Longitudinal Study of Parents and Children (ALSPAC). The blood samples were assayed for total mercury using inductively coupled plasma dynamic reaction cell mass spectrometry. Linear regression was used to estimate the relative contributions of 103 dietary variables and 6 sociodemographic characteristics to whole blood total mercury levels (TBM; untransformed and log-transformed) based on R2 values. RESULTS: We estimated that maternal diet accounted for 19.8% of the total variation in ln-TBM, with 44% of diet-associated variability (8.75% of the total variation) associated with seafood consumption (white fish, oily fish, and shellfish). Other dietary components positively associated with TBM included wine and herbal teas, and components with significant negative associations included white bread, meat pies or pasties, and french fries. CONCLUSIONS: Although seafood is a source of dietary mercury, seafood appeared to explain a relaÂtively small proportion of the variation in TBM in our UK study population. Our findings require confirmation, but suggest that limiting seafood intake during pregnancy may have a limited impact on prenatal blood mercury levels. |
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