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Molecular characteristics of Hepatitis B and chronic liver disease in a cohort of HB carriers from Bamako, Mali.
- Source :
-
BMC infectious diseases [BMC Infect Dis] 2015 Apr 11; Vol. 15, pp. 180. Date of Electronic Publication: 2015 Apr 11. - Publication Year :
- 2015
-
Abstract
- Background: Hepatitis B (HB) infection is common in Mali. However, there is little information on molecular and biochemical characteristics of HB carriers.<br />Methods: A group of 1466 adult volunteers was recruited in the district of Bamako. Confirmed HB carriers were tested for HB viral load by quantitative PCR and HBV was genotyped by sequencing of HBS. Fibrosis and hepatitis activity were measured using the Fibrotest-Actitest. A mutation of TP53 at codon 249 (R249S), specific for exposure to aflatoxin, was detected in cell-free DNA extracted from plasma.<br />Results: Overall, 276 subjects were HBsAg-positive (18.8%). Among 152 subjects tested for HBV load, 49 (32.2%) had over 10(4) copies/mL and 16 (10.5%) had levels below the limit of detection. The E genotype was found in 91.1% of carriers. Fibrotest scores ≥ F2 were observed in 52 subjects (35.4%). Actitest scores ≥ A2 were detected in 15 subjects (10.2%) and were correlated with Fibrotest scores (p = 0.0006). Among 105 subjects tested, 60% had detectable levels of R249S copies (>40 copies/mL plasma).<br />Conclusion: Chronic HB carriage in adults in Bamako district is well over epidemic threshold. About 1/3 of carriers have moderate to severe liver fibrosis and 60% have detectable aflatoxin-related TP53 R249S mutation. These results support introduction of anti-HB therapies to reduce the progression towards severe liver disease.
- Subjects :
- Adolescent
Adult
Aflatoxins toxicity
Aged
DNA Mutational Analysis
Female
Genes, p53 genetics
Genotype
Hepatitis B epidemiology
Hepatitis B pathology
Hepatitis B Surface Antigens blood
Humans
Liver Cirrhosis epidemiology
Liver Cirrhosis pathology
Male
Mali epidemiology
Middle Aged
Mutation genetics
Viral Load
Young Adult
Carrier State virology
Hepatitis B complications
Hepatitis B virology
Hepatitis B virus genetics
Hepatitis B virus isolation & purification
Liver Cirrhosis complications
Liver Cirrhosis virology
Subjects
Details
- Language :
- English
- ISSN :
- 1471-2334
- Volume :
- 15
- Database :
- MEDLINE
- Journal :
- BMC infectious diseases
- Publication Type :
- Academic Journal
- Accession number :
- 25886382
- Full Text :
- https://doi.org/10.1186/s12879-015-0916-x