Detection of HCV-RNA in saliva of HIV-HCV coinfected patients.
ABSTRACT The presence of HCV-RNA in saliva of patients with chronic hepatitis C provides a biological basis for the potential transmission of this virus. HCV viremia is particularly high in HCV-HIV-coinfected patients, which could favor the presence of HCV in their saliva. This study was designed to evaluate the prevalence of HCV in saliva of HCV-HIV-coinfected patients. Stimulated whole saliva was collected from 75 HCV-HIV-coinfected patients and 75 HCV controls. The presence of HCV-RNA in saliva was tested by a highly sensitive noncommercialized nested PCR, and analyzed in relation to demographic, clinical, and analytical variables. HCVRNA was detected in the saliva of 49 (65%) HCV-HIV-coinfected patients and 39 (52%) HCV controls. The presence of HCV in saliva was not related to any of the analyzed variables in HCV-HIV-coinfected patients. In the HCV control group a statistically significant relationship was demonstrated only between the detection of HCV-RNA in saliva and the viral load in peripheral blood (p < 0.001). Our results indicate that there is a trend toward a higher HCV-RNA prevalence in the saliva of HCV-HIV-coinfected patients.
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ABSTRACT: The hepatitis C virus (HCV) can be detected in blood and other bodily fluids, such as saliva, semen and gastric juices. The aim of this study was to compare the HCV viral loads in the serum and saliva of infected patients. Twenty-nine patients with detectable HCV RNA in their serum and saliva were included in this study. The HCV viral loads were determined through quantitative real-time polymerase chain reactions. The median viral RNA levels were 5.78 log10 copies in the serum and 3.32 log10 copies in the saliva. We observed that the salivary HCV viral load was significantly lower than the viral load in the serum. Further studies are required to understand the role of saliva in the diagnosis, management and potential transmission of HCV.Memórias do Instituto Oswaldo Cruz 08/2012; 107(5):680-3. · 1.36 Impact Factor
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ABSTRACT: Hepatitis C virus (HCV) is mainly transmitted by parenteral route, being blood transfusion and intravenous drug use the most frequent risk factors. However, it has been suggested that there are other routes of transmission. There are several studies where HCV RNA has been detected in saliva of patients infected with HCV, and epidemiological studies have proposed the dental treatments as possible risk factors for HCV transmission. The purpose of this study was to detect the presence of HCV RNA in saliva of patients with active infection and associating with periodontal or liver disease. Patients with quantifiable HCV-RNA in serum were enrolled in the study. Periodontal disease was assessed using the modified gingival index (MGI). Presence of dental plaque was assessed with the use of disclosing tablets. Patients were clinically and laboratory evaluated to identify the stage of liver disease, the HCV RNA was determinate in saliva by nested RT-PCR. To determine associations between different parameters univariate and multivariate analysis were used. A total of 45 patients were included. Of these patients, 21(46.6%) had hepatitis, 23 (51.1%) had cirrhosis and one patient (2.4%) presented hepatocellular carcinoma (HCC. Viral loads in serum ranged from 2.31-6.68 log IU/ml with a mean of 5.46 log IU/ml (95% CI 5.23-5.70). HCV RNA was positive in saliva of 29 patients (64.4%) and was not detected in 16 (35.6%). For univariate analysis three independent variables were associated with the detection of HCV-RNA in saliva: gender, viral load and dental plaque and multivariate analysis only one independent variable viral load >5.17 log IU/mL remained significantly associated with the detection of HCV in saliva (p = 0.0002). A statistical difference was observed when viral load was analyzed, log 5.85 IU/mL (95% CI 5.67-6.02) for patients with HCV in saliva vs. log 4.77 IU/mL (95% CI 4.35-5.19) for patients without HCV in saliva (p = 0.0001). The detection of HCV-RNA in saliva was more frequent in patients with relatively high serum viral loads. HCV-RNA in saliva was associated with the level of serum viral load but not with periodontal or liver disease severity.BMC Infectious Diseases 02/2014; 14(1):72. · 3.03 Impact Factor
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ABSTRACT: OBJECTIVE: To determine hepatitis C virus (HCV) RNA clearance from blood and saliva of HIV-HCV-coinfected patients undergoing combined therapy with pegylated interferon plus ribavirin (PEG-IFN-RIB). SUBJECTS AND METHODS: Study group was formed of 60 HIV-infected patients with chronic hepatitis C who were starting treatment with PEG-IFN-RIB. Blood and saliva samples were taken at baseline, at the end of treatment and 24 and 48 weeks later. A nested RT-PCR technique was used to detect HCV-RNA in saliva. RESULTS: HCV-RNA was detected in saliva at baseline in 64.7% of patients. Thirty-four patients completed follow-up. The response rate (undetectable HCV-RNA) in blood was 79.4% at the end of treatment; 55.8% at 24 weeks after the end of treatment and 50% at 48 weeks. HCV was detected in saliva of 13 (38.2%) patients at the end of treatment and in 18 (52.9%) patients at 24 and 48 weeks later. Concordance of HCV clearance from blood and saliva reached its maximum value at 48 weeks after the end of treatment (odds ratio, 112.51). CONCLUSION: In HIV-HCV-coinfected patients responders to PEG-IFN-RIB, the salivary glands do not appear to be a sanctuary site for HCV, although viral clearance from saliva may be slower than from blood.Oral Diseases 04/2013; · 2.38 Impact Factor