Last data update: May 06, 2024. (Total: 46732 publications since 2009)
Records 1-3 (of 3 Records) |
Query Trace: Katsitadze G[original query] |
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Prevalence and diversity of Bartonella species in rodents from Georgia (Caucasus)
Malania L , Bai Y , Osikowicz LM , Tsertsvadze N , Katsitadze G , Imnadze P , Kosoy M . Am J Trop Med Hyg 2016 95 (2) 466-471 Bartonella infections are widespread and highly prevalent in rodents. Several rodent-associated Bartonella species have been related to human diseases. Recently, Bartonella species was reported as the etiology of a human case in the country of Georgia (Caucasus). However, information on Bartonella in rodents in Georgia is absent. Rodent hearts were collected from Georgia to investigate the presence and diversity of Bartonella species. Bartonella bacteria were cultured from 37.2% (16/43) of rodents examined, while Bartonella DNA was detected in 41.2% (28/68) of rodents by polymerase chain reaction targeting citrate synthase (gltA) gene. Sequences of gltA showed that rodents in this region harbored multiple Bartonella strains, including Bartonella elizabethae, Bartonella tribocorum, Bartonella grahamii, and an unknown genogroup. The first three Bartonella species, known to be rat-associated and human cases linked, were commonly observed in wood mice (Apodemus [Sylvaemus] uralensis) (5/8 positive with B. elizabethae and B. tribocorum) and social voles (Microtus socialis) (4/6 positive with B. grahamii and B. elizabethae) in this study. The frequent distribution of these Bartonella species suggests that they may contribute to unidentified clinical infections. The unknown genogroup was observed in 24 Bartonella isolates and/or DNA extracts from heart tissues, all of which were obtained from Libyan jirds (Meriones libycus). Further characterization of the bacterial cultures based on sequence analysis of four additional genes (ftsZ, nuoG, rpoB, and ssrA) supported that the jird-associated Bartonella strains comprise a distinct monophyletic clade. The impact of this bacterium on wildlife and human health needs to be determined. |
Human lymphadenopathy caused by ratborne bartonella, Tbilisi, Georgia
Kandelaki G , Malania L , Bai Y , Chakvetadze N , Katsitadze G , Imnadze P , Nelson C , Harrus S , Kosoy M . Emerg Infect Dis 2016 22 (3) 544-6 Lymphadenopathy and fever that developed in a woman in Tbilisi, Georgia, most likely were caused by a ratborne Bartonella strain related B. tribocorum and B. elizabethae. The finding suggests that this Bartonella strain could be spread by infected rats and represents a potential human risk. |
Traditional risk factors for Helicobacter pylori infection not found among patients undergoing diagnostic upper endoscopy-Republic of Georgia, 2007-2008
Tarkhashvili N , Chakvetadze N , Mebonia N , Chubinidze M , Bakanidze L , Shengelidze V , Mirtskhulava M , Chachava T , Katsitadze G , Gabunia U , Kordzaia D , Imnadze P , Guarner J , Sobel J . Int J Infect Dis 2012 16 (9) e697-702 OBJECTIVES: Helicobacter pylori causes gastritis, duodenal ulcers, and gastric cancer. Although household crowding, low socioeconomic status (SES), and poor sanitation are associated with infection elsewhere, risk factors of infection in the Republic of Georgia (ROG), a country with a high prevalence rate (>70%), remain unknown. In this study we explored potential risk factors of infection among symptomatic patients in ROG. METHODS: During 2007-2008, we prospectively recruited 390 subjects with gastrointestinal symptoms referred to five tertiary care centers for diagnostic upper endoscopy. We administered a questionnaire on potential risk factors and tested patients using three diagnostic tests: gastric biopsies underwent histological evaluation and rapid urease test (CLO test), and an ELISA was used to detect IgG against H. pylori in serum. We defined a case as having two or more positive results from the three available tests. Univariate and multivariate logistic regression analyses were performed. RESULTS: Overall, 217 (56%) patients met the study case definition. Subjects diagnosed with cancer had the highest rate of H. pylori infection (62%), followed by those with gastritis (55%), and ulcer (54%). Age >30 years (adjusted odds ratio (aOR 2.6, 95% confidence interval (CI) 1.6-4.3) and residing in the capital city (aOR 0.6, 95% CI 0.4-0.9) were significantly associated with infection. CONCLUSIONS: In this large cohort with gastrointestinal symptoms, only age >30 years and living in the capital were significant factors associated with infection. Lower SES, less education, and crowding did not confer an increased risk, in contrast to the findings of previous studies. Population-based studies are needed to identify potential routes and risk factors of H. pylori infection in ROG. |
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