1
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Analysis of pathological changes and related factors in liver tissue of HBeAg-negative patients with low HBsAg levels. Clin Exp Med 2020; 20:577-586. [PMID: 32656675 DOI: 10.1007/s10238-020-00645-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Accepted: 07/04/2020] [Indexed: 10/23/2022]
Abstract
The relationship between pathological changes in liver tissue and the level of hepatitis B surface antigen (HBsAg) remains unclear. This study aimed to analyze the pathological changes in liver tissue and its related factors in patients with low-level HBsAg in order to provide a basis for judging the condition of these patients. A retrospective study was performed on 96 chronic hepatitis B patients with HBsAg levels < 1400 IU/ml and > 0.05 IU/ml. The histopathological examination of these patients was conducted. Univariate and multivariate analyses were used to determine risk factors for pathological changes. Among the 96 patients, 57.3% (55) had inflammatory events ≥ G2 and 33.4% (33) had fibrosis ≥ S2. HBV infection duration (p = 0.001) and splenic vein diameter (p = 0.001) were independent risk factors of liver inflammation (≥ G2) in patients with low-level HBsAg, while AST (p = 0.006) and PLT (p = 0.005) were independent risk factors of liver fibrosis (≥ S2). Moreover, HBV infection duration (p < 0.001) and spleen vein (p = 0.001) were independent factors of potential antiviral treatment. Liver inflammation and fibrosis are still common in patients with low-level HBsAg; thus, the monitoring and appropriate antiviral treatment cannot be ignored.
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Dai Y, Che F, Jiang X, Cui D, Zhou H, Xu X, Sun C, Cheng J. Clinical characteristics and association analysis of persistent low-level HBsAg expression in a physical examination population with HBV infection. Exp Ther Med 2019; 19:19-32. [PMID: 31853269 PMCID: PMC6909745 DOI: 10.3892/etm.2019.8217] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Accepted: 08/05/2019] [Indexed: 02/07/2023] Open
Abstract
Certain patients with hepatitis B virus (HBV) infection present with persistently low levels of serum hepatitis B surface antigen (HBsAg) and have been indicated to have low rates of HBV nucleic acid replication. To explore the serological and molecular epidemiological characteristics of HBV population with low-level HBsAg in the present study, associated serum markers and virologic genotype detection were performed accordingly. Determination of HBV markers was performed using a chemiluminescence immunoassay from which 2,544 out of 45,256 adults who underwent routine health examination were tested positive for HBsAg. HBV DNA was detected by real-time fluorescent quantitative PCR. The patients were divided into low-level and high-level groups, according to their HBsAg levels (cut-off value, 10 IU/ml). The prevalence and levels of HBsAg positivity and HBV DNA in patients with HBV infection were analyzed by age, sex, serological pattern and clinical type. The fibrosis status of patients with low-level HBsAg was assessed by determining the aspartate aminotransferase-to-platelet ratio (APRI), and sequencing was employed to determine serotypes and genotypes. HBV-infected patients with low-level HBsAg (<10 IU/ml) accounted for 15.41% of the 2,544 HBsAg-positive patients, and the prevalence of HBsAg positivity exhibited a tendency to increase with age. The male-to-female ratio was ~1.9:1, and the average age was 54.98±16.28 years among HBV-infected patients with low-level HBsAg. The major serological pattern and clinical types were HBsAg/antibody against hepatitis Be antigen (anti-HBe)/antibody against hepatitis B core antigen (anti-HBc)-positive (94.90%) and chronic asymptomatic (ASC) (97.95%), respectively. HBV DNA exhibited a low-level of replication and the prevalence of HBV DNA positivity assessed by the routine method and by the enrichment method was 27.74% (97/392) and 45.92% (180/392), respectively. No significant differences among the age groups were identified in the different HBsAg level groups (P>0.05). The prevalence of HBV DNA positivity was associated with HBsAg only in patients with serological pattern HBV-M2 (HBsAg/anti-HBe/anti-HBc-positive) in the low-level HBsAg group (odds ratio: 1.30; 95% CI: 1.15–1.47; P<0.05). The APRI had no association with age, HBsAg, HBV DNA level or liver function index in ASC patients in the low-level HBsAg group (P>0.05). The prevalence of the serotype adw and genotype B was 85.53 and 89.47%, respectively. Further improvement in the systematic study of populations with low-level HBsAg has important clinical and epidemiological significance for improving the detection of HBV serological markers, elucidating the mechanisms leading to low-level HBsAg, overcoming immune tolerance to eliminate HBV infection and preventing HBV transmission.
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Affiliation(s)
- Yuzhu Dai
- Department of Clinical Laboratory, The 903rd Hospital of The PLA, Hangzhou, Zhejiang 310013, P.R. China.,Department of Laboratory Medicine, Key Laboratory of Clinical In Vitro Diagnostic Techniques of Zhejiang Province, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
| | - Feihu Che
- Department of Clinical Laboratory, The 903rd Hospital of The PLA, Hangzhou, Zhejiang 310013, P.R. China
| | - Xiaoxiao Jiang
- Department of Respiration, The 903rd Hospital of The PLA, Hangzhou, Zhejiang 310013, P.R. China
| | - Dawei Cui
- Department of Laboratory Medicine, Key Laboratory of Clinical In Vitro Diagnostic Techniques of Zhejiang Province, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
| | - Huajun Zhou
- Department of Clinical Laboratory, The 903rd Hospital of The PLA, Hangzhou, Zhejiang 310013, P.R. China
| | - Xujian Xu
- Department of Biotechnology, University of Tokyo, Tokyo 1138656, Japan
| | - Changgui Sun
- Department of Clinical Laboratory, The 903rd Hospital of The PLA, Hangzhou, Zhejiang 310013, P.R. China
| | - Jun Cheng
- Department of Clinical Laboratory, The 903rd Hospital of The PLA, Hangzhou, Zhejiang 310013, P.R. China.,Department of Medical Laboratory, Faculty of Graduate Studies, Jiangsu University, Zhenjiang, Jiangsu 212013, P.R. China.,Department of Medical Laboratory, Faculty of Graduate Studies, Bengbu Medical College, Bengbu, Anhui 233000, P.R. China
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3
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Wang T, Dai Y, Lu W, Zhou H, Chen Y, Xu X, Sun C, Cheng J. An epidemiological survey of HBV infection and low-level HBsAg in military camps in eastern China. Medicine (Baltimore) 2018; 97:e12201. [PMID: 30235666 PMCID: PMC6160064 DOI: 10.1097/md.0000000000012201] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
This study aimed to investigate hepatitis B virus (HBV) infection in military personnel in eastern China, which will provide a basis for the prevention of HBV infection.A total of 15,508 soldiers and 2386 officers were recruited from military camps in eastern China. The markers, deoxyribonucleic acid, serotypes, and genotypes of HBV in serum were detected and analyzed.Hepatitis B surface antigen (HBsAg) positive rate was 0.44% in soldiers, in whom the low-level HBsAg accounted for 88.24%. The HBsAg positive rate was 1.72% in officers in whom the low-level HBsAg accounted for 12.20%. There were significant differences in the prevalence of high-level and low-level HBsAg, HBV serotypes, HBV DNA positive rate, and mean log HBV DNA between officers and soldiers (P < .05). Compared with the conventional method for HBV DNA extraction, the enrichment method for HBV DNA extraction could significantly improve the positive rate and quantification of HBV DNA by real-time fluorescence quantitative polymerase chain reaction (P < .05). Sequencing of S gene in HBV was used for the determination of serotype and genotype of HBV. The sequencing success rate was significantly different between soldiers and officers (P < .05) as well as between high-level HBsAg group and low-level HBsAg group (P < .05). Significant difference was also observed in the genotype distribution between soldiers and officers (P < .05).HBV infection displays a low prevalence and a low epidemic state, and the prevalence of low-level HBsAg is higher in soldiers. We should pay attention to improve the quality of conscription examination as well as emphasize the surveillance, prevention, and protection of HBV infection in military officers.
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Affiliation(s)
- Tong Wang
- Faculty of Graduate Studies, Bengbu Medical College, Bengbu
- Department of Clinical Laboratory, The 117th Hospital of PLA
| | - Yuzhu Dai
- Department of Clinical Laboratory, The 117th Hospital of PLA
| | - Wei Lu
- Department of Clinical Laboratory, The 117th Hospital of PLA
| | - Huajun Zhou
- Department of Clinical Laboratory, The 117th Hospital of PLA
| | - Yu Chen
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Xujian Xu
- Department of Biotechnology, The University of Tokyo, Tokyo, Japan
| | - Changgui Sun
- Department of Clinical Laboratory, The 117th Hospital of PLA
| | - Jun Cheng
- Department of Clinical Laboratory, The 117th Hospital of PLA
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4
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Cheng J, Dai Y, Yan L, Zhou H, Xu X, Sun C, Wang Z. Clinical Characteristics and Correlation Analysis of Subjects with Chronic Hepatitis B Virus (HBV) Infection and Sustained Low Levels of Hepatitis B Surface Antigen (HBsAg). Med Sci Monit 2018; 24:1826-1835. [PMID: 29593208 PMCID: PMC5890521 DOI: 10.12659/msm.905445] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND The aim of this study was to investigate the clinical characteristics of individuals with chronic hepatitis B virus (HBV) infection with persistent low levels of hepatitis B surface antigen (HBsAg) and to undertake a correlation analysis of the clinical characteristics. MATERIAL AND METHODS The study included 1,204 subjects with chronic HBV infection. Serum HBsAg, HBV envelope antigen (HBeAg), and HBV core antigen (HBcAg) levels were measured using the chemiluminescent microparticle immunoassay (CMIA) and the neutralization test. HBV DNA was measured using real-time fluorescence quantitative polymerase chain reaction (RT-FQ-PCR). RESULTS There were 1,023 subjects in the high-level HBsAg group (HBsAg level ≥10 IU/mL) and 181 subjects in the low-level HBsAg group (HBsAg level <10 IU/mL). In the low-level HBsAg group, the main serological pattern (93.37%) was HBsAg and HBeAg and HBcAg-positive (HBV-M2), and the asymptomatic carrier (ASC) status was 98.34%. The low-level HBsAg group had a lower HBV DNA-positive rate compared with the high-level HBsAg group (40.33% vs. 75.07%), with a normal distribution across all age groups (P>0.05). The low-level HBsAg group included an older age group. A low-level of HBsAg was positively correlated with a low level of replication of HBV DNA (r=0.452). CONCLUSIONS The findings of this study showed that individuals with chronic HBV infection and sustained low-levels of HBsAg were an older population and had a lower level of replicating HBV DNA when compared with individuals with high levels of HBsAg, and the majority (93.7%) were also HBsAg and HBeAg and HBcAg-positive.
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Affiliation(s)
- Jun Cheng
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China (mainland).,Department of Clinical Laboratory, The 117th Hospital of PLA, Hangzhou, Zhejiang, China (mainland)
| | - Yuzhu Dai
- Department of Clinical Laboratory, The 117th Hospital of PLA, Hangzhou, Zhejiang, China (mainland)
| | - Li Yan
- Department of Clinical Laboratory, The 117th Hospital of PLA, Hangzhou, Zhejiang, China (mainland)
| | - Huajun Zhou
- Department of Clinical Laboratory, The 117th Hospital of PLA, Hangzhou, Zhejiang, China (mainland)
| | - Xujian Xu
- Department of Biotechnology, The University of Tokyo, Tokyo, China (mainland)
| | - Changgui Sun
- Department of Clinical Laboratory, The 117th Hospital of PLA, Hangzhou, Zhejiang, China (mainland)
| | - Zhongyong Wang
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China (mainland)
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Addition of nucleoside analogues to peg-IFNα-2a enhances virological response in chronic hepatitis B patients without early response to peg-IFNα-2a: a randomized controlled trial. BMC Gastroenterol 2017; 17:102. [PMID: 28854883 PMCID: PMC5577782 DOI: 10.1186/s12876-017-0657-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Accepted: 08/17/2017] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Current treatments for chronic hepatitis B (CHB) include pegylated interferon alpha (PEG-IFN-α) which is an immune modulator, and nucleos(t)ide analogs (NAs) which directly inhibit HBV DNA polymerase. With the limited efficacy of PEG-IFN-α and prolonged treatment periods associated with NAs, there is an urgent need for novel therapeutic strategies, especially for patients with a poor early response to anti-viral therapy. METHODS In this study, 178 patients with chronic hepatitis B (n = 131) and compensated (n = 47) HBV-induced cirrhosis were enrolled, 120 patients with HBeAg (+). All the patients were treated for 12 weeks with PEG-IFN-α. Among them, a total of 138 patients with a poor virological response after 12 weeks were treated for an additional 48 weeks with Peg-IFNα-2a (control) (n = 43), with Peg-IFNα-2a + entecavir (ETV) (n = 49), or Peg-IFNα-2a + adefovir dipivoxil (ADV) (n = 46), and were followed for 48 weeks after therapy. Early virological response was defined as undetectable HBV DNA after anti-viral therapy for 12 weeks. Sustained virological response (SVR) was defined as no change in therapeutic effectiveness after 6 months follow-up, and no recurrence.Therapeutic efficacy was determined by evaluating HBV DNA levels, serum and liver HBsAg levels, liver function tests and liver histology. RESULTS Patients in the Peg-IFNα-2a + ETV and Peg-IFNα-2a + ADV groups showed a significantly greater decrease in HBV DNA levels over time, and a significantly higher SVR compared to patients receiving Peg-INFα-2a monotherapy (both P values <0.05). Although patients receiving combination therapy had a significantly higher change in serum HBsAg levels compared to the monotherapy group, there was no significant difference in liver HBsAg levels between the three treatment groups. CONCLUSION This study demonstrated that in patients with a poor virological response after 12 weeks of treatment with Peg-IFNα-2a alone, addition of ADV or ETV significantly reduced HBV DNA levels, serum HBsAg levels, and increased SVR. Individualization of anti-viral therapy would ensure that only patients who do not respond to Peg-IFNα-2a would receive combination therapy. Our data have important implications for the treatment of CHB patients who fail to show an early response to Peg-IFNα-2a monotherapy. TRIAL REGISTRATION This trial was retrospectively registered on 2012 May 24 at the China Clinical Trials Registry (ChiCTR-OCC-12002196).
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6
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Samadi Kochaksaraei G, Congly SE, Matwiy T, Castillo E, Martin SR, Charlton CL, Coffin CS. Cost-effectiveness of quantitative hepatitis B virus surface antigen testing in pregnancy in predicting vertical transmission risk. Liver Int 2016; 36:1604-1610. [PMID: 27059287 DOI: 10.1111/liv.13139] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Accepted: 03/26/2016] [Indexed: 12/13/2022]
Abstract
BACKGROUND & AIMS Vertical transmission of hepatitis B virus (HBV) can occur despite immunoprophylaxis in mothers with high HBV DNA levels (>5-7 log10 IU/ml). Quantitative hepatitis B surface antigen (qHBsAg) testing could be used as a surrogate marker to identify high viral load carriers, but there is limited data in pregnancy. We conducted a prospective observational study to determine the cost-effectiveness and utility of qHBsAg as a valid surrogate marker of HBV DNA. METHODS Pregnant patients with chronic hepatitis B were recruited from a tertiary referral centre. HBV DNA levels and qHBsAg were assessed in the second to third trimester. Statistical analysis was performed by Spearman's rank correlation and student's t-test. The cost-effectiveness of qHBsAg as compared to HBV DNA testing was calculated. RESULTS Ninety nine women with 103 pregnancies, median age 32 years, 65% Asian, 23% African and 12% other [Hispanic, Caucasian] were enrolled. Overall, 23% (23/99) were HBV e Ag (HBeAg)-positive. A significant correlation between qHBsAg and HBV DNA levels was noted in HBeAg-positive patients (r = 0.79, P < 0.05) but not in HBeAg-negative patients (r = 0.17, P = 0.06). In receiver operating characteristic analysis, the optimal qHBsAg cut-off values for predicting maternal viraemia associated with immunoprophylaxis failure (i.e., HBV DNA ≥7 log10 IU/ml) was 4.3 log10 IU/ml (accuracy 98.7%, sensitivity 94.7%, specificity 94.4%) (95% CI, 97-100%, P < 0.05). Use of HBV DNA as compared to qHBsAg costs approximately $20 000 more per infection prevented. CONCLUSION In resource poor regions, qHBsAg could be used as a more cost-effective marker for high maternal viraemia, and indicate when anti-HBV nucleos/tide analogue therapy should be used to prevent HBV immunoprophylaxis failure.
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Affiliation(s)
| | - Stephen E Congly
- Department of Medicine, University of Calgary, Calgary, AB, Canada
| | - Trudy Matwiy
- Department of Medicine, University of Calgary, Calgary, AB, Canada
| | - Eliana Castillo
- Department of Medicine, University of Calgary, Calgary, AB, Canada
| | - Steven R Martin
- Department of Pediatrics, Alberta Children's Hospital, University of Calgary, Calgary, AB, Canada
| | - Carmen L Charlton
- Provincial Laboratory for Public Health (ProvLab), University of Alberta Hospital, Edmonton, AB, Canada.,Laboratory Medicine and Pathology, University of Alberta, Edmonton, AB, Canada
| | - Carla S Coffin
- Department of Medicine, University of Calgary, Calgary, AB, Canada.
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7
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Fei QJ, Yang XD, Ni WH, Pan CS, Huang XF. Can hepatitis B virus DNA in semen be predicted by serum levels of hepatitis B virus DNA, HBeAg, and HBsAg in chronically infected men from infertile couples? Andrology 2015; 3:506-11. [PMID: 25873521 DOI: 10.1111/andr.12021] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Revised: 01/08/2015] [Accepted: 01/26/2015] [Indexed: 12/29/2022]
Abstract
Hepatitis B virus (HBV) in semen is important for father-to-child transmission of HBV and has adverse effects on sperm quality. However, risk factors associated with HBV in semen remain unclear. Serum HBV DNA and hepatitis B e antigen (HBeAg) levels may pose a risk on HBV in semen. This study aims to examine whether serum HBV DNA, HBeAg, and hepatitis B surface antigen (HBsAg) level were associated with HBV DNA in semen. 151 male patients chronically infected with HBV from infertile couples were included. Serum HBsAg and HBeAg were determined using an electrochemiluminescence immune assay (ECLIA). Serum and seminal plasma HBV DNA were detected by the QIAGEN Real-Time HBV DNA assay. Of 151 patients, 143 (94.7%) were serum HBV DNA-positive and 65 (43.0%) were seminal plasma HBV DNA-positive. Serum HBV DNA and HBeAg level of seminal plasma HBV DNA-positive patients were significantly higher (p < 0.001) as compared with those of seminal plasma HBV DNA-negative patients, HBsAg level of seminal plasma HBV DNA-positive patients was significantly lower (p < 0.001) compared with that of seminal plasma HBV DNA-negative patients. The best serum HBV DNA, HBeAg, and HBsAg value for discriminating between seminal plasma HBV DNA-positive and HBV DNA-negative patients were ≥6.9 log10 IU/mL (sensitivity 100.0%, specificity 90.7%), >14.8 S/CO (sensitivity 96.9%, specificity 81.5%), and <1791.5 S/CO (sensitivity 81.5%, specificity 81.2%), respectively. The combination of serum HBV DNA and HBeAg had high diagnostic sensitivity (100.0%) and specificity (95.4%) for the presence of HBV DNA in semen. As such, these serum markers especially the combination of HBV DNA and HBeAg are useful predictors of the presence of HBV DNA in semen in HBV chronically infected men from infertile couples.
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Affiliation(s)
- Q J Fei
- Reproductive Medicine Center, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - X D Yang
- Department of Infectious Disease, Yuying Children's Hospital Affiliated to Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - W H Ni
- Reproductive Medicine Center, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - C S Pan
- Reproductive Medicine Center, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - X F Huang
- Reproductive Medicine Center, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
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8
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Fung J, Seto WK, Wong DKH, Lai CL, Yuen MF. Hepatitis B surface antigen levels after hepatitis B e-antigen seroclearance: a longitudinal follow-up study. Liver Int 2015; 35:854-9. [PMID: 24840542 DOI: 10.1111/liv.12596] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2013] [Accepted: 05/13/2014] [Indexed: 02/13/2023]
Abstract
BACKGROUND & AIMS The role of quantitative hepatitis B surface antigen (HBsAg) after hepatitis B e-antigen (HBeAg) seroclearance is not well defined. To determine the role of HBsAg levels in predicting significant viremia and hepatitis flares after HBeAg seroclearance. METHODS A total of 228 chronic hepatitis B patients with spontaneous HBeAg seroclearance were included. Patients were followed up regularly at 3-6 monthly intervals with routine liver biochemistry and hepatitis B serology. Levels of HBV DNA and HBsAg were measured at yearly intervals for up to 5 years after HBeAg seroclearance. RESULTS The median log HBsAg and HBV DNA level after HBeAg seroclearance was 3.52 IU/ml and 4.13 IU/ ml respectively, with no significant correlation observed between them (P = 0.572). The HBV DNA at HBeAg seroclearance was 4.13 log IU/ml, compared with 3.12 log IU/ml after 5 years (P < 0.001). No significant change was observed for HBsAg levels (P = 0.991). Hepatitis B flares occurred in 76 (33.3%) patients. Patients who developed hepatitic flares compared with those without hepatitic flares were older (40 vs. 36 years, P = 0.001), had a higher HBV DNA at the time of HBeAg seroclearance (4.70 vs. 3.77 log IU/ml, P =< 0.001), and more likely to be males (42.7% vs. 23.4%, P = 0.002) respectively. There was no difference in HBsAg levels between those with and without hepatitis flare (3.54 vs. 3.52 log IU/ml respectively, P = 0.555). CONCLUSION HBV DNA levels, but not HBsAg levels, after HBeAg seroclearance were associated with subsequent significant viremia and hepatitic flares. Male gender and older age was associated with significant viremia.
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Affiliation(s)
- James Fung
- Department of Medicine, The University of Hong Kong, Hongkong, China; State Key Laboratory for Liver Research, The University of Hong Kong, Hongkong, China; Liver Transplant Centre, Queen Mary Hospital, Hongkong, China
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9
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Gong X, Zhu Y, Dong J, Chen J, You J, Zheng Q, Rao Z, Mao Q, Jiang J. Small hepatitis B surface antigen interacts with and modulates enoyl-coenzyme A hydratase expression in hepatoma cells. Arch Virol 2012; 158:1065-70. [PMID: 23275097 DOI: 10.1007/s00705-012-1581-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2012] [Accepted: 11/16/2012] [Indexed: 12/30/2022]
Abstract
Enoyl-coenzyme A hydratase (ECHS1) is a key enzyme in the metabolism of fatty acids in mitochondria. We previously reported that hepatitis B surface antigen (HBsAg) interacted with ECHS1 in a yeast two-hybrid system. In the current study, we further examined their interaction by using GST pull-down and co-immunoprecipitation assays. The results confirmed that small hepatitis B surface antigen (SHBs) interacted with ECHS1. Furthermore, confocal imaging showed that SHBs and ECHS1 co-localized in HepG2 cells. To clarify the biological function of the interaction, human hepatoma cell lines that transiently and stably expressed SHBs were generated. The expression of SHBs led to a significant decrease in ECHS1 protein levels. ECHS1 protein levels were reduced to 48.44 ± 7.12 % in Huh7 cells transiently expressing SHBs, and to 54.97 ± 3.54 % in HepG2 cells stably expressing SHBs. In conclusion, our findings suggest that SHBs interacts with ECHS1 and regulates ECHS1 protein levels in hepatoma cells.
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Affiliation(s)
- Xianqiong Gong
- Center of Liver Diseases, The First Affiliated Hospital of Fujian Medical University, Fuzhou 350004, Fujian, China
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10
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Gupta E, Kumar A, Choudhary A, Kumar M, Sarin SK. Serum hepatitis B surface antigen levels correlate with high serum HBV DNA levels in patients with chronic hepatitis B: a cross-sectional study. Indian J Med Microbiol 2012; 30:150-4. [PMID: 22664428 DOI: 10.4103/0255-0857.96664] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
PURPOSE The hallmark of chronic hepatitis B (CHB) infection is the presence of hepatitis B surface antigen (HBsAg) positivity for at least 6 months. Recently, serum levels of HBsAg have been compared with serum HBV DNA as a surrogate marker to monitor CHB patients. However, data correlating these two markers are scarce. Hence, the present study was done to correlate HBV DNA with HBsAg in CHB patients. MATERIALS AND METHODS Consecutive patients of CHB were included. HBV DNA was measured by real-time polymerase chain reaction (PCR). Serum HBsAg was measured by Architect HBsAg. RESULTS Of the 198 patients enrolled, 166 fulfilled the inclusion criteria (mean age 43 ± 14 years, 87% males) and the median HBV DNA was 1.7 × 10 3 (range 6.0-1.1 × 10 8 ) IU/ml. Median HBsAg was 8.7 × 10 3 (range 5.0-3.2 × 10 5) IU/ml. Overall correlation between HBV DNA and HBsAg was weak but significant (Spearman ρ = 0.443, P < 0.01). Correlation in HBe antigen-positive group was better (ρ = 0.402, P < 0.01) in comparison to HBe antigen-negative group (ρ = 0.193 P = 0.05). Good correlation existed in treatment-naïve group (ρ = 0.538, P < 0.01) .Correlation was regardless of normal or raised alanine transaminase (ALT). Eighty (48%) patients had high HBV DNA (≥ 2000 IU/ml). Correlation in high DNA group was significant (P < 0.01). The best cut-off of HBsAg for diagnosing high DNA is 3.36 ×10 3 IU/ml. CONCLUSIONS Serum HBsAg correlates with HBV DNA in CHB patients, especially in high serum HBV DNA, HBe antigen-positive and treatment-naïve group. HBsAg levels can be used for predicting high serum HBV DNA levels.
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Affiliation(s)
- E Gupta
- Department of Virology, Institute of Liver and Biliary Sciences (ILBS), Vasant Kunj, New Delhi - 110 070, India
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11
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Sun KX, Li J, Zhu FC, Liu JX, Li RC, Zhai XJ, Li YP, Chang ZJ, Nie JJ, Zhuang H. A predictive value of quantitative HBsAg for serum HBV DNA level among HBeAg-positive pregnant women. Vaccine 2012; 30:5335-40. [PMID: 22749833 DOI: 10.1016/j.vaccine.2012.06.036] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2012] [Revised: 06/12/2012] [Accepted: 06/13/2012] [Indexed: 12/31/2022]
Abstract
BACKGROUND The high maternal HBV DNA level is the most important factor contributing to HBV perinatal transmission. This study is to explore whether HBsAg can be used as a surrogate marker of serum HBV DNA for HBsAg-positive pregnant women. METHODS A total of 975 HBsAg-positive pregnant women and their infants were enrolled in this study. All infants received three doses of a yeast-derived recombinant Hepatitis B vaccine at 0, 1 and 6 months. They were also given Hepatitis B immunoglobulin (HBIG) at birth. HBsAg and HBeAg were determined using Abbott Architect assays while serum HBV DNA level was detected by the Abbott Real Time HBV DNA assay. RESULTS Of the 975 subjects, 367 (37.6%) were HBeAg-positive and 608 (62.4%) were HBeAg-negative. Among the HBeAg-positive group, the samples with HBV DNA levels of ≥7.0 logIU/mL were 76.6% (281/367), and it was only 0.7% (4/608) for the HBeAg-negative group. HBV DNA level was positively correlated with HBsAg in HBeAg-positive group (r=0.786, p<0.001) but not in HBeAg-negative group (r=0.022, p=0.593). Among HBeAg-positive group, the area under the receiver-operator curve (ROC) of HBsAg titer for high HBV DNA level (≥7.0 logIU/mL) was 0.961 (95% CI, 0.940-0.983, p<0.001). The optimum cut-off point HBsAg titer above 4.1 logIU/mL had a sensitivity of 85.1%, specificity of 96.5%, and accuracy of 87.5% to predict HBV DNA levels of ≥7.0 logIU/mL. Of 367 infants born to mothers with HBeAg-positive, perinatal transmission was detected in 24 infants (6.5%, 24/367). Their mothers all had serum HBV DNA levels of ≥7.0 logIU/mL, 23 (95.8%) had HBsAg titers of ≥4.1 logIU/mL and the other mother had HBsAg titer of 3.9 logIU/mL. Of 608 infants born to mothers with HBeAg-negative, only one (0.2%, 1/608) became HBsAg-positive at the age of 7 months, and the mother of the infant had serum HBV DNA level of 3.4 logIU/mL and HBsAg titer of 1.8 logIU/mL, respectively. CONCLUSION Serum HBsAg titer may be used as a surrogate marker of serum HBV DNA for HBeAg-positive pregnant women.
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Affiliation(s)
- Kui-Xia Sun
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
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Fung J, Lai CL, Young J, Wong DKH, Yuen J, Seto WK, Yuen MF. Stability of hepatitis B surface antigen over time: Implications for studies using stored sera. J Med Virol 2011; 83:1900-4. [DOI: 10.1002/jmv.22171] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Quantitative measurement of serum hepatitis B surface antigen using an immunoradiometric assay in chronic hepatitis B. Nucl Med Mol Imaging 2010; 45:15-20. [PMID: 24899973 DOI: 10.1007/s13139-010-0061-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2010] [Accepted: 10/18/2010] [Indexed: 01/25/2023] Open
Abstract
PURPOSE Measurement of serum hepatitis B virus surface antigen (HBsAg) levels is important for the management of chronic hepatitis B patients in terms of monitoring response to antiviral therapy. This study aimed to evaluate the diagnostic performance of a new diagnostic kit, which quantitatively measures serum HBsAg level using an immunoradiometric assay (IRMA)-based method. Measurements were compared with those obtained using a chemiluminescent microparticle immunoassay (CMIA)-based method. METHODS The blood samples of 96 patients with chronic hepatitis B were used in this study. Copy numbers of serum hepatitis B virus (HBV) DNA were determined in 23 of these samples. The correlation between and the concordance of IRMA and CMIA results were determined using Pearson's correlation coefficients. P values of 0.05 were considered to be statistically significant throughout. RESULTS Laboratory diagnoses based on IRMA were wholly in agreement with those based on CMIA. Furthermore, serum HBsAg levels by IRMA were found to be highly correlated with those determined by CMIA (correlation coefficient R (2) = 0.838, p < 0.001). Serum HBsAg level and serum HBV DNA copies were found to be linearly related by both methods (R (2) = 0.067, p = 0.316 by IRMA, and R (2) = 0.101, p = 0.215 by CMIA). CONCLUSION The diagnostic performance of the investigated IRMA method of determining HBsAg levels was found to be comparable with that of a CMIA-based method in chronic hepatitis B patients.
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Fung J, Lai CL, Yuen MF. Hepatitis B virus DNA and hepatitis B surface antigen levels in chronic hepatitis B. Expert Rev Anti Infect Ther 2010; 8:717-26. [PMID: 20521898 DOI: 10.1586/eri.10.45] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Despite universal vaccination, chronic hepatitis B (CHB) continues to be a major health burden worldwide, with an estimated 350-400 million people infected with the virus. Over the past decade, rapid progress has been made with regards to antiviral therapy for CHB, from conventional interferon to pegylated interferon, and with the earliest oral agent lamivudine to the current, more potent drugs such as entecavir and tenofovir. There have also been new developments in the diagnostic and monitoring tools for CHB. Qualitative hepatitis B surface antigen (HBsAg) testing has been used to diagnose patients infected with CHB. More recently, quantitative HBsAg titers have been used to predict treatment outcome when measured at baseline or early into treatment. The progress on the use of hepatitis B virus (HBV) DNA levels has been more rapid. Serum HBV DNA levels have been shown to be important in the natural history of CHB infection, with higher levels being significantly associated with the development of cirrhosis and hepatocellular carcinoma. For patients receiving antiviral therapy, the baseline and early on-treatment HBV DNA levels are important in determining treatment outcomes. Monitoring of HBV DNA levels during therapy will allow for early detection of drug resistance. The end-of-treatment and post-treatment HBV DNA levels have been demonstrated to be important indicators of treatment success and relapse, respectively. With newer and more powerful antiviral agents, and with the development of quantitative assays that are highly sensitive, further studies are needed to optimize the use of these tools and agents in the modern management of CHB.
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Affiliation(s)
- James Fung
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Pokfulam Road, Hong Kong SAR.
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