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Occult Hepatitis C Infection Among Hemodialysis Patients: A Prevalence Study
Reza Naghdi1, Mitra Ranjbar2, Farah Bokharaei-Salim3
1Toronto Centre for Liver Disease, University Health Network, University of Toronto, Toronto, Ontario, Canada.
Insights
Occult hepatitis C infection (OHCI) is a risk for Iranian hemodialysis (HD) patients. This study found 3.03% of HD patients had OHCI, highlighting the need for sensitive diagnostic methods like PBMC testing.
Area of Science:
- Hepatology
- Virology
- Nephrology
Background:
- Occult hepatitis C infection (OHCI) is defined by Hepatitis C Virus RNA (HCV-RNA) presence in liver or peripheral blood mononuclear cells (PBMC) despite negative serology.
- Chronic hemodialysis (HD) patients are a high-risk population for Hepatitis C Virus (HCV) infection.
Purpose of the Study:
- To determine the prevalence of OHCI in Iranian patients undergoing chronic hemodialysis.
- To assess the utility of PBMC testing for diagnosing OHCI in this cohort.
Main Methods:
- A cross-sectional study involving 200 chronic HD patients with negative HCV antibody.
- HCV RNA detection using Polymerase Chain Reaction (PCR) in both serum and PBMCs.
Main Results:
- 2 patients (1%) were diagnosed with manifest hepatitis C infection (MHCI) based on positive serum HCV RNA.
- 6 patients (3.03%) tested positive for HCV RNA in PBMCs, indicating OHCI.
Conclusions:
- Chronic HD patients are susceptible to OHCI, not just manifest HCV infection.
- PBMC analysis for HCV RNA is a sensitive method for detecting OHCI in HD patients.
- Routine screening for OHCI may be warranted in high-risk HD populations.
Introduction And Aim:
Occult hepatitis C infection (OHCI) is the presence of HCV-RNA in the liver or peripheral blood mononuclear cells (PBMC) accompanying with negative serologic results. The aim of this study was to evaluate the prevalence of OHCI among Iranian chronic hemodialysis (HD) patients.
Material And Methods:
In this cross sectional study 200 chronic HD patients with negative HCV antibody enrolled the study. Blood sample of patients were obtained, followed by Polymerase Chain reaction (PCR) testing for detection of HCV RNA. Patients with positive serum HCV RNA were considered as manifest hepatitis C infection (MHCI). However, patients with negative serum HCV RNA underwent further tests on PBMCs for detection of OHCI.
Results:
Serum HCV RNA was positive in 2 (1%) patients whom considered as MHCI, and 6 (3.03%) patients had positive PBMC HCV RNA.
Conclusion:
In conclusion, chronic HD patients have been considered as a high risk group for hepatitis C infection. The results of this study suggest that these patients are also at risk for OHCI. Furthermore, evaluating PBMCs to detect HCV RNA would be a sensitive diagnostic method to find OHCI patients.
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