Showing 10 results for Hepatitis
Abbasi A (md), Tajbakhsh R (md), Kabotari M, Zhand S (msc), Tabarraei A (phd), ,
Volume 6, Issue 1 (4-2012)
Abstract
Abstract Background and objectives: Hepatitis B virus infection is a major health problem in worldwide. The prevalence of Occult and chronic HBV in hemodialysis patients is higher than standard in developing countries. People with occult HBV are negative for HBV surface antigen (HBsAg) but positive for HBV-DNA. We aimed to evaluate occult hepatitis B infection in patients under hemodialysis in Panje-Azar hospital in Gorgan. Material and Methods: In this study, taken place from 2009 to 2010, the participants were 100 hemodialysis patients with administration of complete HBV vaccination with negative test for HBsAg. After preparing 10 milliliter blood sample, HBV DNA testing was performed by polymerase chain reaction (PCR). Result: The mean age of the patients is 54.60 years. They are male (48%) and female (52%). They have been under hemodialysis for 48 months, averagely. There has not been any HBV-DNA in HBsAg negative patients under hemodialysis. The rate of occult hepatitis B infection in these end stage renal disease (ESRD) patients was zero. Conclusion: Results indicate that there is no any occult HBV infection in ESRD patients under hemodialysis in Gorgan, which is similar to some studies. The results could be justified by complete vaccination of the patients. Key words: Occult Hepatitis B, Hemodialysis, HBsAg, Gorgan
Rezanezhadi, M, Tabarraei, A, Zhand, S, Moradi, A, Nezamzade, R, Vakili, Ma,
Volume 8, Issue 5 (1-2015)
Abstract
Abstract Background and Objective: Lamivudine is the first orally available drug approved for treatment of chronic hepatitis B. Mutations at the YMDD and FLLAQ motifs in the domains of HBV polymerase gene contribute resistance to lamivudine. This study was aimed to determine the rate of YMDD and FLLAQ mutants in hepatitis B patients in Golestan Province, Iran. Material and methods: In this cross sectional study, 120 patients with chronic HBV infection were recruited. Of them, 55 were treated and 65 untreated with Lamivudine. HBV DNA extractions from plasma and polymerase chain reaction (PCR) were performed. For detection of Lamivudine mutants direct sequencing and alignment of products were applied using reference sequence from Gene Bank database. Results: the average age of patients was 36.31±10.07, which 35% of them were female and 65% were male. Mutations at the YMDD and FLLAQ motifs in the domains of HBV polymerase gene were detected in 12 of 55 patients (21.81%) treated with Lamivudine while no mutation was observed in in untreated patients. The YMDD and FLLAQ mutants were detected in 9.16% (11/120) and 0.83% (1/120) of chronic HBV patients, respectively. Conclusion: Usual HBV mutations, which play an important role in lamivudine resistance, detected in this study are similar to other studies. Key words: Hepatitis B Viruse, YMDD Mutation, Lamivudine, Iran.
Malekpour, B., Tajbakhsh, E, Khamesipour, F, Rahimi, A,
Volume 9, Issue 2 (7-2015)
Abstract
Background and Objective: Hepatitis delta virus is an imperfect virus with RNA and its activity depends on the presence of hepatitis B virus. This virus can lead to acute and chronic diseases in the liver. This study aimed to detect the hepatitis delta virus in blood donors with positive Hepatitis B Surface Antigens (HBsAg).
Material and Methods: In this Study, 350 serum samples were obtained from the people infected with hepatitis B blood in Transfusion organization of Shahrekord city, Iran. After extracting RNA by RNA Plus kit and making cDNA, the samples were evaluated by using RT PCR.
Results: Of 350, two samples (0.57%) were infected by HDV.
Conclusion: Low prevalence of HDV infection shows that Hepatitis B is being controlled in Shahrekord.
Keywords: Hepatitis Delta Virus, Blood Donors, Hepatitis B Surface Antigens
Mahmoud Alebouyeh , Zahra Abedi , Hossein Rastegar , Hasan Bagheri , Javad Vaez, Behrouz Akbari-Adergani ,
Volume 9, Issue 5 (11-2015)
Abstract
Abstract
Background and Objective: Aluminum salts are among the most common useful additive compounds in preparation of human and animal vaccines. Aluminum phosphate and aluminum hydroxide are two additives that show good immunoadjuvant effects with many antigens. Aluminum-containing vaccines lead to a better and longer immune response compared to adjuvant-lacking vaccines. The Chromogenic methods used for determination of aluminum amounts in manufacturing centers are time-consuming and requires some experienced technicians to obtain accurate results. This study aimed to design and validate a simple polarographic method to measure aluminum in recombinant hepatitis B vaccine.
Methods: In this study, the effects of temperature, pH, potential range and potential scan rate on the polarographic method of measuring aluminum in hepatitis B vaccine was evaluated and the optimal values for each of these factors were achieved.
Results: In order to measure aluminum, temperature of 60 °C and pH of 4.5 were found as the optimal values. Implementation of polarographic method in the potential range of -0.25 to 0.1 volts had a better signal.
Conclusion: Since the polarography method is more simple, accurate and faster than the chromogenic methods, it is suitable to be used for the measurement of aluminum in hepatitis B vaccine and it is recommended to be used in quality control laboratories for biological products.
Keywords: Adjuvant, Hepatitis B Vaccine, Polarography, Aluminum.
Mohamad Reza Nazer, Zia Obeidavi, Behrouz Beiranvand, Mahshid Garmsiri ,
Volume 10, Issue 5 (9-2016)
Abstract
ABSTRACT
Background and Objective: This study was conducted to evaluate epidemiology of risk factors for hepatitis C virus (HCV) transmission, and determine the association of its genotypes with viral load and response to treatment in patients referred to the Infectious Disease Clinic of Khorramabad.
Methods: The study included patients infected with hepatitis C referred to the Infectious Disease Clinic of Khorramabad during 2011-14. Those who met the inclusion criteria were referred to counseling centers for risky behaviors. After collecting demographic and epidemiologic data on the modes of transmission, blood samples were collected for more accurate testing. The erum of patients with hepatitis C was evaluated in terms of HCV genotype and viral load using PCR.
Results: Among 120 patients studied, 102 (85%) were male and 18 (15%) were female. The most prevalent genotypes were 3a (63.8%), 1a (25%), 1a/1b (5.2%) and 2 (1.7%). Intravenous drug abuse was the main route of transmission of hepatitis C in the study. The genotypes 3a and 1a had a clear correlation with intravenous drug abuse and history of blood transfusion (P<0.05). It was also found that the patients with genotype 3a show a better initial response to treatment with interferon.
Conclusion: The study shows that intravenous drug abuse is the main route of transmission, which highlights the need for intervention and education in this group of patients to prevent disease transmission.
Keywords: Hepatitis C, Genotype, Intravenous Drug Abuse, HIV, Interferon.
Nazila Hajiahmadi, Abdolvahab Moradi, Naeme Javid, Alijan Tabarraei,
Volume 11, Issue 1 (1-2017)
Abstract
ABSTRACT
Background and Objectives: Diagnosis of hepatitis E virus (HEV) infection could be missed in some cases if serological tests are used solely. Molecular characterization of HEV is essential for diagnosis of acute and chronic HEV infections, and evaluating the chronic HEV infection status in immunocompromised patients. The aim of this study was to prepare a suitable HEV positive control, determine the limit of detection (LOD) of HEV RNA for a specific molecular test, and evaluate the efficiency and precision of the test.
Methods: Genomic region of HEV NCBI reference sequence was constructed. LOD, intra-assay precision, and inter-assay precision were calculated to evaluate the efficiency and precision of the test. Then, tenfold serial dilutions of the HEV positive control were prepared. Real time PCR was performed three times for each dilution. Mean, standard deviation, and coefficient of variation of cycle thresholds obtained in three independent and simultaneous tests were calculated, and the results were analyzed.
Results: The LOD of this test was determined as 1.4×104 copy/ml or 42 copy/reaction or 14 copy/µl. Intra-assay precision and inter-assay precision for all assays were lower than 2.5% and 10%, respectively.
Conclusion: We propose that the real time PCR assay targeting the ORF2/3 overlapping conserved region is suitable for detection of a wide range of different HEV genotypes found in acute and chronic HEV infections. However, the precision of the test should be improved for detecting HEV RNA lower than 103 copy/ml.
Keywords: Hepatitis E virus, Limit of Detection, Real Time PCR.
Mahshid Zandi , Mohammad Ebrahimifard, Abdolvahab Moradi,
Volume 11, Issue 3 (5-2017)
Abstract
ABSTRACT
Background and Objective: MiRNAs are small RNAs that are expressed in most eukaryotes, and can regulate gene expression by attaching to the 3’ end of target mRNA. MicroRNA-101 (miR-101) post-transcriptional regulation is important for host-virus interactions. In addition, miR-101 has a tumor suppressive role in liver cancer and metastasis, and induces apoptosis in tumor cells. We examined miR-101 expression in patients with chronic hepatitis B, hepatitis B virus (
HBV)-associated cirrhosis and healthy individuals.
Methods: The study was performed on 108 whole blood samples (36 samples from each group) collected in EDTA tubes. RNA was extraction by RNX-plus kit according to the manufacturer’s protocol. Finally, miRNA expression was evaluated using relative real time PCR.
Results: A 2.4-fold increase was observed in miR-101 expression in patients with chronic hepatitis B, while there was a 3.5-fold increase in miR-101 expression in patients with
HBV-associated cirrhosis compared with healthy controls (P=0.003). MiR-101 overexpression in patients with
HBV-associated cirrhosis was more notable that in patients with chronic hepatitis B.
Conclusion: According to the results, evaluating miR-101 expression may predict disease progression from chronic hepatitis B to HBV-associated cirrhosis.
Keywords:
MicroRNAs, Chronic Hepatitis B, Liver Cirrhosis, MiR-101.
Majid Komijani, Mohammad Taghi Kardi, Khashayar Shahin, Mahsa Yazdi,
Volume 11, Issue 5 (9-2017)
Abstract
ABSTRACT
Three major hepatitis B virus (HBV) antigens include HBcAg, HBeAg and HBsAg. HBeAg is the extracellular form of HBcAg, and is seen almost exclusively in people who have circulating serum HBV DNA. Presence of HBsAg in serum indicates that the individual has contracted HBV infection. Chronic hepatitis HBeAg-negative/anti-HBe–positive is known as an important form of chronic hepatitis B in the Mediterranean region. In this report, we used Real-Time PCR and ELISA for detection of HBV and HBeAg/HbsAg, respectively. In our investigation on 4743 HBV cases referred to the Mahdieh Clinical Laboratory between 2008 and 2016, we found a
53-year-old man with clinical symptoms of hepatitis and abnormal molecular and serological features. Despite the presence of clinical symptoms and high viral load (128 × 10
5 iu/ml), the patient was HBsAg-positive and HBeAg-negative. Identifying this type of HBV could indicate spread of this type of hepatitis in Isfahan, Iran.
Keywords: Hepatitis B, HbsAg, HBeAg.
Shima Najar, Nafiseh Sadat Naghavi ,
Volume 12, Issue 4 (7-2018)
Abstract
ABSTRACT
Background and Objectives: Hepatitis A virus (HAV) enters sewage through the stool of infected patients and contaminates freshwater and seawater. The aim of present study was quantitative molecular detection of HAV in raw and treated urban sewage samples from Isfahan, center of Iran.
Material and methods: Sewage samples were collected from six urban treatment plants in cold and warm weather, between December 2016 and Jun 2017. Physicochemical indicators were measured immediately after sampling. Viral particles were isolated and concentrated by modified adsorption-elution method using Al3+-coated filters. Quantitative PCR was done for amplification of a fragment in the highly conserved 5′ noncoding region of the HAV genome.
Results: Although the values of the indicators were lower in 67-83% of sewage samples in warm weather, no significant difference was detected between the physicochemical indicators of sewage samples. HAV was detected in three raw sewage samples collected in cold weather (copy number of 32590, 28400 and 14200 per µl) and in one treated sewage sample (copy number of 6500 per µl) collected in cold weather. Positive HAV sewage samples had been treated by activated sludge and aerated lagoon.
Conclusion: We detected high frequency of HAV in raw urban sewage samples from Isfahan, Iran. This highlights the importance of paying extra attention to irrigation of farms with raw sewage. Based on the results of this study and previous studies, it can be concluded that the activated sludge system may be more effective for elimination of enteric viruses, such as HAV.
Keywords: Hepatitis A virus, Sewage, Weather.
Udhaya Kumar, Anirudh Mutalik, Jeevithan Shanmugam, Mohan Kumar,
Volume 18, Issue 1 (1-2024)
Abstract
Background: Viral hepatitis is increasingly being recognized as a public health problem, requiring special attention. The World Health Organization (WHO) estimated that in 2019, 296 million people globally (3.8%) had chronic hepatitis B virus (HBV) infection, and 58 million people (0.8%) were living with hepatitis C virus (HCV). To add to this, every year, about 1.5 million people are newly infected with either hepatitis B or C viruses. The Global Health Sector Strategy (GHSS) has aimed to eliminate viral hepatitis as a major public health problem by 2030.
Methods: We conducted a desk review to identify strategies for preventing viral hepatitis and develop a roadmap to attain the sustainable development goals (SDG) target by 2030 (particularly in low- and middle-income countries). A search was done in PubMed via Medline on 1 December 2022.
Results: The focus has to be on key interventions, including hepatitis B vaccination (part of the routine child immunization along with rescheduling the birth dose to up to 7 days post-term, adult vaccination, for targeted groups like health care providers, rag pickers, waste handlers, and sanitation workers), ensuring safe injection practices and blood transfusion, harm reduction interventions for people who inject drugs (PWID), adequate testing for early diagnosis, and ensuring appropriate treatment.
Conclusion: It is the need of the hour to prioritize key interventions identified in the review for preventing viral hepatitis.
