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Hepatitis G virus exposure in dialysis patients
Ali Eslamifar1, Rasool Hamkar, Amitis Ramezani
1Clinical Research Department, Pasteur Institute of Iran, No 69, Pasteur Ave., Tehran, 13164, Iran.
Insights
Hepatitis G virus (HGV) exposure was low in Iranian dialysis patients, with only 3.89% of hemodialysis patients testing positive for anti-HGV envelope protein E2. HGV RNA was not detected, suggesting viral clearance in exposed individuals.
Area of Science:
- Virology
- Infectious Diseases
- Nephrology
Background:
- Hepatitis G virus (HGV) is a blood-borne pathogen primarily transmitted parenterally.
- Dialysis patients are a potential risk group for blood-borne virus exposure.
- Assessing HGV prevalence in this population is crucial for understanding transmission dynamics.
Purpose of the Study:
- To determine the frequency of Hepatitis G virus (HGV) exposure among patients undergoing hemodialysis (HD) and continuous ambulatory peritoneal dialysis (CAPD) in Iran.
- To investigate potential risk factors associated with HGV exposure in this cohort.
Main Methods:
- A cohort of 77 HD and 13 CAPD patients in Tehran, Iran, were studied.
- HGV exposure was indicated by the presence of anti-HGV envelope protein E2 (anti-E2) detected via ELISA.
- HGV RNA was assessed using RT-PCR in anti-E2 positive patients; screening for HBV and HCV markers was also performed.
Main Results:
- Anti-HGV envelope protein E2 (anti-E2) was detected in 3.89% of hemodialysis patients; no CAPD patients tested positive.
- Hepatitis G virus (HGV) RNA was not detected in any patient, indicating viral clearance.
- No co-infection with Hepatitis C virus (HCV) or Hepatitis B virus (HBV) was observed in anti-E2 positive patients.
Conclusions:
- The rate of Hepatitis G virus (HGV) exposure is low in Iranian dialysis patients.
- Anti-HGV envelope protein E2 (anti-E2) seropositivity correlated with HGV RNA clearance.
- HGV exposure showed no significant association with age, sex, blood transfusion history, or dialysis duration.
Background:
Hepatitis G virus (HGV) is a blood-borne virus. The predominant route of its transmission is parenteral. The aim of this study was to assess the frequency of HGV exposure in haemodialysis (HD) and continuous ambulatory peritoneal dialysis (CAPD) patients in Iran.
Methods:
This study was performed in a major dialysis centre in Tehran, Iran. The study cohort consisted of 77 patients on HD and 13 patients on CAPD. The presence of anti-HGV envelope protein E2 (anti-E2) in the blood serum, as determined by means of an ELISA assay, indicated HGV exposure. All patients were also screened for hepatitis B surface antigen (HBsAg), hepatitis B surface antibody (anti-HBs) and hepatitis C antibody (anti-HCV). In patients who tested positive for anti-E2, HGV RNA was detected by RT-PCR using primers derived from the NS5A region of the viral genome.
Results:
In total, 3.89% of the HD patients and none of the CAPD patients tested positive for anti-E2. None of the patients tested positive for HGV RNA. The mean age of the anti-E2-positive patients was 53.3 +/- 26.5 years, with 66.66% having previously received blood transfusion. The mean duration of dialysis of the anti-E2-positive patients was 68 +/- 64 months. Co-infection with HCV or HBV was not observed in the anti-E2 positive patients.
Conclusion:
The rate of exposure to HGV was low among the dialysis patients in our study. The appearance of anti-E2 was accompanied by clearance of serum HGV-RNA. No relationship was noted between HGV exposure and age, sex, history of blood transfusion, time on dialysis and HCV or HBV markers.
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