作者:
Jirong.LiMedical Team
Force 75135 of Chinese People's Liberation ArmyGuigang MunicipalityGuangxi 537103China
T-bet is a key regulator for the lineage commitment in CD4 T helper (Th) 1 cells by activating the hallmark production of interferon-c, and its expression level is linked to autoimmune, infectious, and allergic diseas...
T-bet is a key regulator for the lineage commitment in CD4 T helper (Th) 1 cells by activating the hallmark production of interferon-c, and its expression level is linked to autoimmune, infectious, and allergic diseases.A T to C base substitution has been identified at position-1993 in the TBX21 (encoding T-bet) promoter and has been associated with asthma and systemic lupus *** study aimed to investigate the molecular mechanisms responsible for the influence of the T-1993 C polymorphism on transcription and its functional effect by luciferase reporter, EMSAs, Chromatin immunoprecipitation assay, and flow cytometric analysis of intracellular T-bet, IFN-c and IL-4 expression in activated CD4+ T *** presence of a-1993T allele obviously increases promoter activity compared with that of a promoter with a-1993C ***21 promoter carrying-1993C allele possesses significantly stronger binding affinity to the Yin Yang 1 (YY1) transcription factor than that carrying -1993 T ***1 overexpression decreased TBX21 promoter function in a T cell line, demonstrating that this element functions as a *** C to T base exchange relieves the repression mediated by *** individuals carrying-1993 C allele were determined to have significantly diminished expression of TBX21 and IFN-c and increased IL-4 production in cells compared with the individuals carrying-1993T allele (P < 0.05).These findings demonstrate that the TBX21 T-1993C polymorphism represses TBX21 expression and Thl cytokine production through control of YY1, which might result in the imbalance between Thl and Th2 immune responses in autoimmune or allergic diseases.
The management strategy of chronic hepatitis B in patients treated with nucleos(t)ide analogues (NAs) is a topic of *** achieving specific endpoints, the outcome after withdrawal of NAs was *** 2002 and 2009, a total ...
The management strategy of chronic hepatitis B in patients treated with nucleos(t)ide analogues (NAs) is a topic of *** achieving specific endpoints, the outcome after withdrawal of NAs was *** 2002 and 2009, a total of 155 patients who achieved hepatitis B surface antigen (HBsAg) loss, hepatitis B e antigen (HBeAg) seroconversion (for HBeAg-positive patients), or maintained undetectable HBV DNA (for HBeAg-negative patients) and had discontinued treatment for at least 96 weeks were included in the *** DNA and alanine aminotransferase (ALT) level were monitored regularly after withdrawal of *** was determined by twice continuous HBV DNA over 200 IU/mL and ALT over 2 time upper limits of *** median duration of consolidation treatment was 120 weeks (interquartile range, 72-144 weeks), 96 weeks (interquartile range, 48-144 weeks) in HBeAg-positive patients and 144 weeks (interquartile range, 96-168 weeks) in HBeAg-negative *** the 155patients, 24 (16%) demonstrated evidence of relapse (8% of HBeAg-positive and 28% of HBeAg-negative, P<0.01).No relapse was observed in HBsAg loss *** of relapses occurred within 96 weeks of *** median duration of relapse was 36 weeks (interquartile range, 13-48 weeks).Elevation of HBV DNA and ALT level over baseline was only observed in approximately 10% of relapse *** was no significant difference of the baseline characteristic (sex, HBV genotype, age, medicine, or ALT level) and duration of treatment between relapse patients and sustained response *** withdrawal is feasible after achieving some specific *** time of consolidation treatment in HBeAg-positive patients and maintaining consistent undetectable HBV DNA in HBeAg-negative patients are effective strategy to reduce the relapse rate after *** than 96 weeks of sustained response after withdrawal is a predictive marker for long-term sustained response.
Hepatitis B virus (HBV) infection is a serious public health problem *** common genetic variants (rs3077 and rs9277535) of Human Leukocyte Antigen DP (HLA-DP) have been reported to be associated with persistent HBV in...
详细信息
Hepatitis B virus (HBV) infection is a serious public health problem *** common genetic variants (rs3077 and rs9277535) of Human Leukocyte Antigen DP (HLA-DP) have been reported to be associated with persistent HBV infection in populations of Japan and *** confirm whether the association can be replicated in Chinese populations, an independent case-control study were conducted, and two polymorphisms (rs3077 and rs9277535) were genotyped using the TaqMan SNP genotyping assay in 282 persistent chronic HBV carriers and 64 spontaneously HBV recovered *** provide a more definitive conclusion, a meta-analysis combining and summarizing 5 studies was performed by random-effects model using the DerSimonian and Laird's *** using logistic regression analysis with adjustment for covariates, including age, sex, and alcohol consumption, the results of our independent case-control study showed that the minor allele's homozygote (AA genotype) of rs3077 and rs9277535 was significantly associated with decreasing risk/protection of HBV persistent chronic infection (for rs3077: P=0.0017, OR=0.29, 95%CI =0.13-0.62; for rs9277535, P=0.0004, OR =0.26, 95%CI =0.12-0.54).The results of meta-analysis pooling all eligible studies also showed that rs3077-A and rs9277535-A alleles were associated with an increased clearance rate to HBV infection (rs3077: OR =0.57, 95%CI=0.44-0.75; rs9277535: OR =0.56, 95%CI=0.47-0.63).These results further confirmed the strong influence of HLA-DP gene variants on risk of spontaneous HBV clearance from persistent HBV *** A alleles of HLA-DP SNP rs3077 and rs9277535 showed strong protective effects for spontaneous HBV clearance from persistent HBV infection in the Han Chinese population.
Background and Aims:Hepatitis B virus immune escape gives a challenge to prevention,diagnoses and treatment to hepalitis *** aim of this study was to explore characteristics and its molecular mechanism of HBV immune e...
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Background and Aims:Hepatitis B virus immune escape gives a challenge to prevention,diagnoses and treatment to hepalitis *** aim of this study was to explore characteristics and its molecular mechanism of HBV immune escape in HBVendemic ***:HBV isolates from 210 patients with coexistence of HBsAg/HBsAb were sequenced for HBsAg major hydrophilic region (MHR) analysis.
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