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Journal of the International AIDS... 2016Hepatitis C virus (HCV) and HIV infection frequently co-occur due to shared transmission routes. Co-infection is associated with higher HCV viral load (VL), but less is... (Meta-Analysis)
Meta-Analysis Review
INTRODUCTION
Hepatitis C virus (HCV) and HIV infection frequently co-occur due to shared transmission routes. Co-infection is associated with higher HCV viral load (VL), but less is known about the effect of HCV infection on HIV VL and risk of onward transmission.
METHODS
We undertook a systematic review comparing 1) HIV VL among ART-naïve, HCV co-infected individuals versus HIV mono-infected individuals and 2) HIV VL among treated versus untreated HCV co-infected individuals. We performed a random-effects meta-analysis and quantified heterogeneity using the I(2) statistic. We followed Cochrane Collaboration guidelines in conducting our review and PRISMA guidelines in reporting results.
RESULTS AND DISCUSSION
We screened 3925 articles and identified 17 relevant publications. A meta-analysis found no evidence of increased HIV VL associated with HCV co-infection or between HIV VL and HCV treatment with pegylated interferon-alpha-2a/b and ribavirin.
CONCLUSIONS
This finding is in contrast to the substantial increases in HIV VL observed with several other systemic infections. It presents opportunities to elucidate the biological pathways that underpin epidemiological synergy in HIV co-infections and may enable prediction of which co-infections are most important to epidemic control.
Topics: Antiviral Agents; Coinfection; HIV Infections; Hepacivirus; Hepatitis C; Humans; Viral Load
PubMed: 27649908
DOI: 10.7448/IAS.19.1.20944 -
Annals of HepatologyBackground. Hepatitis B virus infection and chronic kidney disease are prevalent and remain a major public health problem worldwide. It remains unclear how infection... (Meta-Analysis)
Meta-Analysis Review
UNLABELLED
Background. Hepatitis B virus infection and chronic kidney disease are prevalent and remain a major public health problem worldwide. It remains unclear how infection with hepatitis B virus impacts on the development and progression of chronic kidney disease.
AIM
To evaluate the effect of infection with HBV on the risk of chronic kidney disease in the general population.
MATERIAL AND METHODS
We conducted a systematic review of the published medical literature to determine if hepatitis B infection is associated with increased likelihood of chronic kidney disease. We used the random effects model of DerSimonian and Laird to generate a summary estimate of the relative risk for chronic kidney disease (defined by reduced glomerular filtration rate and/or detectable proteinuria) with hepatitis B virus across the published studies. Meta-regression and stratified analysis were also conducted.
RESULTS
We identified 16 studies (n = 394,664 patients) and separate meta-analyses were performed according to the outcome. The subset of longitudinal studies addressing ESRD (n = 2; n = 91,656) gave a pooled aHR 3.87 (95% CI, 1.48; 6.25, P < 0.0001) among HBV-infected patients and no heterogeneity was recorded. In meta-regression, we noted the impact of male (P = 0.006) and duration of follow- up (P = 0.007) upon the adjusted hazard ratio of incidence of chronic kidney disease (including end-stage renal disease). No relationship occurred between HBV positive status and prevalent chronic disease (n = 7, n = 109,889 unique patients); adjusted odds ratio, were 1.07 (95% CI, 0.89; 1.25) and 0.93 (95% CI, 0.76; 1.10), respectively.
CONCLUSIONS
HBV infection is possibly associated with a risk of developing reduced glomerular filtration rate in the general population; no link between HBV sero-positive status and frequency of chronic kidney disease or proteinuria was noted in cross-sectional surveys.
Topics: Adult; Aged; Chi-Square Distribution; Female; Glomerular Filtration Rate; Hepatitis B; Humans; Kidney; Kidney Failure, Chronic; Male; Middle Aged; Observational Studies as Topic; Odds Ratio; Prevalence; Proteinuria; Renal Insufficiency, Chronic; Risk Assessment; Risk Factors; Time Factors
PubMed: 28051791
DOI: 10.5604/16652681.1226813 -
International Journal of Environmental... Jan 2023Hepatitis A is a common form of viral hepatitis. It is usually transmitted through the ingestion of contaminated food and water. This systematic review was carried out... (Meta-Analysis)
Meta-Analysis Review
Hepatitis A is a common form of viral hepatitis. It is usually transmitted through the ingestion of contaminated food and water. This systematic review was carried out to summarise the overall prevalence of Hepatitis A virus (HAV) in different water matrices: untreated and treated wastewater, surface water, groundwater, drinking water, and others (e.g., irrigation water and floodwater). The literature search was performed in four databases: PubMed, Web of Science, Global Index Medicus, and Excerpta Medica Database. Heterogeneity (I2) was assessed using the χ2 test on the Cochran Q statistic and H parameters. A total of 200 prevalence data from 144 articles were included in this meta-analysis. The overall prevalence of HAV in water matrices was 16.7% (95% CI: 13.4−20.3). The prevalence for individual matrix was as follows: 31.4% (95% CI: 23.0−40.4) untreated wastewater, 18.0% (95% CI: 9.5−28.2) treated wastewater, 15.0% (95% CI: 10.1−20.5) surface water, 2.3% (95% CI: 0.1−6.0) in groundwater, 0.3% (95% CI: 0.0−1.7) in drinking water, and 8.5% (95% CI: 3.1−15.6) in other matrices. The prevalence was higher in low-income economies (29.0%). Africa and Eastern Mediterranean were the regions with higher HAV prevalence values. This study showed a high heterogeneity (I2 > 75%) with a significant publication bias (p value Egger test < 0.001). The results of this review suggest that water matrices could be an important route of HAV transmission even in industrialized countries, despite the lower prevalence compared to less industrialized countries, and the availability of advanced water management systems. More effective water/wastewater treatment strategies are needed in developing countries to limit the environmental circulation of HAV.
Topics: Humans; Hepatitis A virus; Wastewater; Drinking Water; Hepatitis A; Hepatitis, Viral, Human; Prevalence
PubMed: 36673812
DOI: 10.3390/ijerph20021054 -
Australian Dental Journal Sep 2016A role for hepatitis C virus in oral lichen planus has been postulated. This systematic review and meta-analysis of the existing epidemiological studies was conducted to... (Meta-Analysis)
Meta-Analysis Review
BACKGROUND
A role for hepatitis C virus in oral lichen planus has been postulated. This systematic review and meta-analysis of the existing epidemiological studies was conducted to determine if there is a correlation between oral lichen planus and hepatitis C virus infection.
METHODS
We examined the association between hepatitis C virus and oral lichen planus by conducting a systematic review and meta-analysis of case-control studies that examined the prevalence of anti-HCV antibodies in the serum of cases and controls. We searched PubMed, Embase and The Cochrane Library databases from 2005 to January 2015. Associations were measured using random-effect odds ratios (ORs) combined with 95% confidence intervals.
RESULTS
Nineteen eligible studies, encompassing 1807 cases of OLP and 2519 controls, were retrieved and included in this review. The summary estimate OR for all studies was 6.07 (95% CI: 2.73-13.48), showing a statistically significant difference in the proportion of HCV seropositivity among oral lichen planus patients, compared with controls and substantial heterogeneity between studies (I(2) = 65%) as a result of a variety of geographical distributions.
CONCLUSIONS
The association of hepatitis C virus infection with oral lichen planus emphasizes the importance of hepatitis C virus screening in oral lichen planus patients.
Topics: Hepatitis C; Hepatitis C Antibodies; Humans; Lichen Planus, Oral; Odds Ratio; Prevalence
PubMed: 26475515
DOI: 10.1111/adj.12382 -
Annals of Clinical Microbiology and... May 2018Hepatitis E virus (HEV), a non-enveloped single stranded RNA virus causes sporadic cases of hepatitis or outbreaks. The disease is generally self-limited although it may... (Review)
Review
Hepatitis E virus (HEV), a non-enveloped single stranded RNA virus causes sporadic cases of hepatitis or outbreaks. The disease is generally self-limited although it may cause fulminant hepatitis in pregnant women, elderly, those with underlying chronic hepatitis, immunosuppressed, and transplant recipients. It is transmitted through fecal-oral route and zoonotic transmission. Hepatitis is a main health care problem in Turkey; HBV and HCV prevalences are 4 and 1% respectively. Hepatitis D represents another considerable hepatitis etiology with a prevalence of 5-27%. The information about HEV is not clear. In this systematic review, we aimed to analyze HEV studies reported from Turkey, to determine the current situation of the disease in the country, to delineate the limits of the studies and to determine the future study areas. The prevalence of HEV ranged from 0 to 12.4%. Children had lower prevalence than the adults. The prevalence was determined as 7-8% in pregnant women, 13% in chronic HBV patients, 54% in chronic HCV patients, 13.9-20.6% in patients with chronic renal failure, and ≈ 35% in agriculture workers. Among individuals immigrating form Turkey to Europe, HEV seroprevalence was found 10.3% in Italy and 33.4% in the Netherlands. HEV prevalence seems high in certain risk groups. Although previous studies suggest that Turkey is among the endemic countries of HEV, there are some pitfalls for the analysis of data: the studies are not powered enough to represent the whole population; they did not include immunosuppressed patients and solid organ recipients; and the prevalence of non-A non-B hepatitis was not determined.
Topics: Adult; Agricultural Workers' Diseases; Child, Preschool; Databases, Factual; Hepatitis E; Hepatitis E virus; Hepatitis, Chronic; Humans; Kidney Failure, Chronic; Pregnant Women; Prevalence; Seroepidemiologic Studies; Socioeconomic Factors; Transients and Migrants; Travel; Turkey
PubMed: 29716597
DOI: 10.1186/s12941-018-0269-6 -
Arab Journal of Gastroenterology : the... Mar 2017Several epidemiological studies investigated the relationship between hepatitis C virus (HCV) infection and risk of thyroid cancer, but the results were not consistent.... (Meta-Analysis)
Meta-Analysis Review
PURPOSE
Several epidemiological studies investigated the relationship between hepatitis C virus (HCV) infection and risk of thyroid cancer, but the results were not consistent. A systematic review and meta-analysis was conducted to assess the impact of HCV infection on thyroid cancer risk.
METHODS
The literature was searched up to March 15, 2016 for case-control or cohort studies on the association between HCV infection and thyroid cancer risk. The summary relative risks (RR) and 95% confidence intervals (CI) were calculated.
RESULTS
Five studies (two case-control studies and three cohort studies) were included in the meta-analysis, with a total of 751,551 participants and 367 cases of thyroid cancer. Meta-analysis of those 5 studies found that there was no statistically significant association between HCV infection and thyroid cancer risk (summary RR=2.09, 95%CI 0.78-5.64, p=0.145; I=81.2%). However, HCV infection was significantly associated with increased risk of thyroid cancer (summary RR=2.86, 95%CI 1.63-5.03, p=0.003; I=24.9%) after adjusting the heterogeneity.
CONCLUSION
There is a possible association between HCV infection and increased risk of thyroid cancer, and more cohort studies are needed to validate the possible association.
Topics: Global Health; Hepacivirus; Hepatitis C; Humans; Incidence; Risk Factors; Thyroid Neoplasms
PubMed: 28223105
DOI: 10.1016/j.ajg.2017.01.003 -
Viruses Jul 2022This review aimed to identify hepatitis C virus (HCV) prevalence estimates among the general population and six key populations (people who inject drugs, men who have... (Review)
Review
BACKGROUND
This review aimed to identify hepatitis C virus (HCV) prevalence estimates among the general population and six key populations (people who inject drugs, men who have sex with men, sex workers, prisoners/detainees, Indigenous people, and migrants) in the World Health Organization Western Pacific Region (WHO WPR).
METHODS
Original research articles published between 2016 and 2020 were identified from bibliographic databases. Publications were retrieved, replicas removed, and abstracts screened. Retained full texts were assessed and excluded if inclusion criteria were not met. Methodological quality was assessed using the Johanna Briggs Institute critical appraisal checklist for prevalence data. Data on HCV exposure and active infection were extracted and aggregated and forest plots generated for each population by country.
RESULTS
There were no HCV prevalence estimates in any population for more than half of WPR countries and territories. Among the 76 estimates, 97% presented prevalence of exposure and 33% prevalence of active infection. General population viraemic prevalence was 1% or less, except in Mongolia. Results confirm the endemic nature of HCV among people who inject drugs, with estimates of exposure ranging from 30% in Cambodia to 76% in Hong Kong.
CONCLUSIONS
Countries require detailed knowledge of HCV prevalence in diverse populations to evaluate the impact of efforts to support WHO HCV elimination goals. Results provide baseline estimates from which to monitor and evaluate progress and by which to benchmark future elimination efforts.
Topics: Hepacivirus; Hepatitis C; Homosexuality, Male; Humans; Male; Prevalence; Sexual and Gender Minorities; World Health Organization
PubMed: 35891529
DOI: 10.3390/v14071548 -
Hepatology (Baltimore, Md.) Jan 2016Perinatal or mother-to-child transmission (MTCT) of hepatitis B virus (HBV) remains the major risk factor for chronic HBV infection worldwide. In addition to hepatitis B... (Meta-Analysis)
Meta-Analysis Review
UNLABELLED
Perinatal or mother-to-child transmission (MTCT) of hepatitis B virus (HBV) remains the major risk factor for chronic HBV infection worldwide. In addition to hepatitis B immune globulin and vaccination, oral antiviral therapies in highly viremic mothers can further decrease MTCT of HBV. We conducted a systematic review and meta-analysis to synthesize the evidence on the efficacy and maternal and fetal safety of antiviral therapy during pregnancy. A protocol was developed by the American Association for the Study of Liver Diseases guideline writing committee. We searched multiple databases for controlled studies that enrolled pregnant women with chronic HBV infection treated with antiviral therapy. Outcomes of interest were reduction of MTCT and adverse outcomes to mothers and newborns. Study selection and data extraction were done by pairs of independent reviewers. We included 26 studies that enrolled 3622 pregnant women. Antiviral therapy reduced MTCT, as defined by infant hepatitis B surface antigen seropositivity (risk ratio = 0.3, 95% confidence interval 0.2-0.4) or infant HBV DNA seropositivity (risk ratio = 0.3, 95% confidence interval 0.2-0.5) at 6-12 months. No significant differences were found in the congenital malformation rate, prematurity rate, and Apgar scores. Compared to control, lamivudine or telbivudine improved maternal HBV DNA suppression at delivery and during 4-8 weeks' postpartum follow-up. Tenofovir showed improvement in HBV DNA suppression at delivery. No significant differences were found in postpartum hemorrhage, cesarean section, and elevated creatinine kinase rates.
CONCLUSIONS
Antiviral therapy improves HBV suppression and reduces MTCT in women with chronic HBV infection with high viral load compared to the use of hepatitis B immunoglobulin and vaccination alone; the use of telbivudine, lamivudine, and tenofovir appears to be safe in pregnancy with no increased adverse maternal or fetal outcome.
Topics: Antiviral Agents; Female; Hepatitis B, Chronic; Humans; Infant, Newborn; Pregnancy; Pregnancy Complications, Infectious; Pregnancy Outcome
PubMed: 26565396
DOI: 10.1002/hep.28302 -
Archives of Virology Jun 2023Viral infections and diseases caused by viruses are worldwide problems. According to a WHO report, three to five million people are chronically infected with hepatitis B... (Review)
Review
Viral infections and diseases caused by viruses are worldwide problems. According to a WHO report, three to five million people are chronically infected with hepatitis B virus (HBV), hepatitis C virus (HCV), and human immunodeficiency virus (HIV) each year globally. Since some viruses mutate very quickly, developing antiviral drugs can be a daunting task. Moreover, currently used synthetic drugs are toxic and associated with side effects. Therefore, there is a need to search for alternative natural remedies that have low toxicity, a new mechanism of action, and no major side effects. Phyllanthus plants have traditionally been used to treat viral hepatitis and liver damage in many tropical and subtropical countries worldwide. In this review, we discuss the therapeutic potential of Phyllanthus spp. against HBV, HCV, HIV, herpes simplex virus, and SARS-CoV-2. The inferences from in vitro and in vivo studies and clinical trials validate the use of Phyllanthus in antiviral remedies.
Topics: Humans; Antiviral Agents; COVID-19; SARS-CoV-2; Hepatitis C; Hepacivirus; Hepatitis B virus; Phyllanthus; HIV Infections
PubMed: 37310509
DOI: 10.1007/s00705-023-05802-w -
Allergy and Asthma Proceedings 2016The association between urticaria and virus infections has rarely been reported in the literature. The lack of reported cases is probably due to the difficulty in... (Meta-Analysis)
Meta-Analysis Review
BACKGROUND
The association between urticaria and virus infections has rarely been reported in the literature. The lack of reported cases is probably due to the difficulty in establishing a cause-and-effect relationship. It is not possible to challenge the patient with an etiologic agent.
OBJECTIVE
The purpose of this work was to perform a systematic review on the association between urticaria and virus infections.
METHODS
This systematic review was conducted according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. We searched for articles from January 1, 2008, through May 2015, by using two key terms related to urticaria and virus diseases, "urticaria" and one key term related to virus infections, "virus disease," then "urticaria" and the name of each virus family, and of the most representative virus serotypes.
RESULTS
We reported cases of patients affected either by acute or chronic urticaria with a concurrent virus infection. Previous other causes of urticaria had to be excluded. Herpesviridae infections and urticaria were the most frequently reported associations in children. However, hepatitis virus infections would appear to be the most-frequent cause of urticaria in adults.
CONCLUSIONS
Data obtained indicated viral infection as a potential trigger and sometimes as the main etiologic agent in causing acute or chronic urticaria. In every case, urticarial manifestation cleared up after either healing or controlling of the viral infection. However, prospective studies and well-structured research is needed to better clarify the role of viruses in the pathogenesis of urticaria and their relative prevalence.
Topics: Acute Disease; Chronic Disease; Female; Humans; Male; Urticaria; Virus Diseases
PubMed: 26637522
DOI: 10.2500/aap.2016.37.3915