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X基因的相关文献在1986年到2023年内共计86871篇,主要集中在内科学、基础医学、肿瘤学 等领域,其中期刊论文134篇、会议论文4篇、专利文献86733篇;相关期刊82种,包括生物技术通讯、微生物与感染、中华微生物学和免疫学杂志等; 相关会议4种,包括第十五次全国中西医结合肝病学术会议、第二届中华医学论坛防治SARS学术会议、第二届21世纪外科研讨会等;X基因的相关文献由50000位作者贡献,包括姚斌、王磊、王亚茹等。

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X基因

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    • 蒋伟; 董晖; 孙静宜; 卜泉东; 赵龙; 王雁飞; 车琳; 徐岩
    • 摘要: 目的 探讨乙型肝炎病毒(HBV)X基因突变在乙肝相关性膜性肾病(HBV-MN)M型磷脂酶2受体(PLA2R)表达以及可能的致病机制研究.方法 由肾穿刺活检证实的HBV-MN的患者103例,根据肾组织PLA2R免疫荧光检测结果分为2组,PLA2R阳性组66例,PLA2R阴性组37例.采用t检验比较两组间的临床生化指标;根据HBV-MN病理分期的不同,MN Ⅰ期(病理损伤较轻)和MNⅡ-Ⅲ期(病理损伤重),采用One-way ANOVA单因素方差分析比较两组间肾脏病理损伤;Spearman相关分析比较PLA2R表达强度与肾脏病理损伤的差别;最后分析两组患者HBx基因突变位点.结果 两组患者24 h尿蛋白定量差别具有统计学意义(t=2.803,P=0.006);而血白蛋白水平(t=-0.313,P=0.755)、血肌酐(t=-0.332,P=0.741)、胆固醇(t=0.312,P=0.756)、补体C3(t=0.589,P=0.557)差别无统计学意义.MN Ⅰ期在两组所占比例差别具有统计学意义(X2=7.449,P=0.006);MNⅡ-Ⅲ期两组差别同样具有统计学意义(X2=10.15,P=0.034);其次,将PLA2R阳性组根据不同PLA2R荧光染色强度与不同MN病理分期行Spearman相关性分析,差别具有统计学意义(r=0.325,P=0.008).最后,分析两组间HBx基因序列突变,发现nt1753位点突变可能与PLA2R表达相关.结论 研究中2/3的HBV-MN患者存在肾组织PLA2R阳性表达,PLA2R阳性组患者伴有尿蛋白排泄量增多以及肾脏病理损伤加重;同时,HBx基因中nt1753位点突变与PLA2R的表达相关,可能是PLA2R阳性HBV-MN重要的发病机制.
    • 宋惠; 杨兰; 徐莉敏; 沈振华; 刘倩倩; 刘兴晖
    • 摘要: 目的 探讨乙型肝炎病毒(HBV)对同源框蛋白A10(HOXA10)表达的影响及其机制.方法 选取慢性乙型肝炎(CHB)患者20例(CHB组)、体检健康者23名(正常对照组),分离其外周血单个核细胞(PBMC).采用实时荧光定量聚合酶链反应(RT-qPCR)和免疫印迹法检测肝癌细胞系HepG2、HepG2.2.15及CHB组、正常对照组PBMC中HOXA10 mRNA和蛋白的表达.将HBV单个基因的表达质粒(pCMV-S、pCMV-E、pCMV-C、pCMV-X、pCMV-P)分别与含有HOXA10基因启动子的荧光素酶报告基因pGL3-HOXA10共转染HepG2细胞,并测定荧光素酶活性.结果 HepG2.2.15细胞中HOXA10 mRNA和蛋白的相对表达量均显著高于HepG2细胞(P=0.001).HBV患者PBMC中HOXA10 mRNA的相对表达量显著高于正常对照组(P=0.001).转染pCMV-X的HepG2细胞的荧光素酶活性显著高于转染对照载体pCMV-tag2B的HepG2细胞(P=0.001),转染其他质粒的HepG2细胞之间荧光素酶活性差异均无统计学意义(P>0.05).转染pCMV-X的HepG2细胞的HOXA10 mRNA和蛋白的相对表达量显著高于转染空载体pCMV-tag2B的HepG2细胞(P=0.001).结论 HBV可能通过其X基因上调HOXA10的表达.
    • 蒋伟; 罗从娟; 董晖; 徐岩; 王祥花
    • 摘要: Objective To investigate the effects of HBV X gene mutation on proteinuria and renal pathological changes in patients with HBV associated glomerulonephritis (HBV-GN).Methods HBV-GN patients were diagnosed by renal biopsy.X gene sequences were analyzed to find mutation sites,so as to explore their effects on urine protein and renal pathological change.The prognosis after antiviral therapy was also analyzed.Results X gene mutation was found in 42 cases among 54 HBV-GN patients.The 24-hour urine protein excretion in 42 cases with X gene mutation was 3.51 (1.25-5.65)g/d,which was higher than that in cases without mutation (Z=0.02,P<0.05).A total of 38 membranous nephropathy (MN) cases with X gene mutation suffering more serious renal pathological damage than 7 MN ones without X gene mutation,and the difference had statistical significance (Spearman=0.3826,P<0.01).The clinical remission rate was lower in patients with X gene mutation after antiviral therapy.Conclusions HBV X gene mutations commonly exist in HBV-GN patients,which can cause proteinuria,renal pathological damage and poor prognosis significantly.X gene is a key factor resulting in HBV-GN development and progression.%目的 探讨X基因突变对HBV相关性肾炎(HBV-GN)尿蛋白量及肾脏病理的影响.方法 通过肾脏病理活检确诊54例HBV-GN患者,通过对患者血清HBV X基因序列分析,找到突变位点,探讨突变对尿蛋白及肾脏病理变化的影响;抗病毒治疗后,分析患者预后变化.结果 54例HBV-GN患者中,42例感染的HBV存在X基因位点突变;42例HBV突变株感染患者24 h尿蛋白量水平为3.51(1.25~5.65)g/d,显著高于未突变患者(Z=0.02,P<0.05).38例伴有X基因突变膜性肾病(MN)患者肾脏病理损害较7例未突变MN患者明显加重,差别具有统计学意义(Spearman=0.3826,P<0.01).经抗病毒治疗后X基因突变组患者临床缓解率较低.结论 HBV的X基因突变广泛存在于HBV-GN患者中,突变株感染导致患者尿蛋白及肾脏病理损害加重,同时突变病例临床缓解率降低,提示X基因突变是HBV-GN发生及进展的重要原因.
    • 代瑞琼; 魏俊
    • 摘要: Objective:To explore the expression of HBVX gene in PBMC in the patient of HBV chronic infection,and the correlation between it and oxidative stress.Methods:The expression of HBVX mRNA in PBMC was detected by RT-PCR.ROS in PBMC was detected by flow cytometer.MDA in blood serum was detected by ultraviolet spectrophotometer.Results:There were four groups through the degree of chronic hepatitis,including a normal group,a mild degree group,a midrange degree group and a severe degree group.There was significant difference ofgene expression of HBVX mRNA in PBMC between the normal group and the chronic hepatitis group (HBVX mRNA expression of the normal group,the mild degree group,the midrange degree group and the severe degree group was 0,0.48±0.24,0.71±0.15 and 0.89±0.27,respectively,P<0.001).There was significant difference ofgene expression of HBVX mRNA of PBMC between the mild degree group and the midrange degree group or the severe degree group (P<0.001).The content of ROS in the the normal group,the mild degree group,the midrange degree group and the severe degree group was 24.63±8.93,25.35±5.66,38.24± 11.64 and 43.45± 14.33,respectively.There was no significant difference of the content of ROS in PBMC between the normal group and the mild degree group (P>0.05).There was significant difference of the content of ROS in PBMC between the midrange degree group or the severe degree group and the normal group or the mild degree group (P<0.001).The content of MDA in the the normal group,the mild degree group,the midrange degree group and the severe degree group was (5.31±1.24),(6.03±1.45),(12.27±3.53) and (19.72±4.66) nmol/L.There was no significant difference of the content of MDA in blood serum between the normal group and the mild degree group (P>0.05).There was significant difference of the content of MDA in blood serum between the midrange degree group or the severe degree group and the normal group or the mild degree group (P<0.001).There was positive correlation between the expression of HBVX mRNA and the content of ROS and MDA (Spearman's r=0.382,r=0.467,P<0.05).Conclusion:The expression of HBVX mRNA in PBMC in the patient of HbsAg chronic infection is increased with degree of chronic hepatitis.There is positive correlation between the expression ofHBVX mRNA and oxidative stress in the patient chronic hepatitis.%目的:探讨慢性乙肝感染者外周血单个核细胞(peripheral blood mononuclear cell,PBMC)乙肝病毒X基因(hepatitis B virus X gene,HBVX)表达与机体氧化应激的相关性.方法:采用RT-PCR检测正常对照组、轻度患者组、中度患者组、重度患者组外周血PBMC中HBVX mRNA的表达;采用流式细胞仪检测以上各组细胞内ROS含量;采用紫外分光光度仪检测各组血清MDA含量.结果:各乙肝患者组PBMC中HBVX mRNA与正常对照组比较,差异有统计学意义(正常对照组HBVX mRNA相对表达量为0,轻度患者组为0.48±0.24,中度患者组为0.71±0.15,重度患者组为0.89±0.27;P<0.001),组间比较,轻度患者组与中度患者组和重度患者组比较,差异有统计学意义(P<0.001);中度患者组与重度患者组比较,差异有统计学意义(P<0.001).正常对照组ROS相对表达量为24.63±8.93,轻度患者组为25.35±5.66,中度患者组为38.24±11.64,重度患者组为43.45±14.33.PBMC中ROS含量,随着乙肝程度加重,ROS含量增加,轻度患者组与正常对照组比较,差异无统计学意义(P>0.05);中度患者组和重度患者组与正常对照组及轻度患者组比较,差异有统计学意义(P<0.001).正常对照组血清MDA含量为(5.31±1.24) nmol/L,轻度患者组为(6.03±1.45) nmol/L,中度患者组为(12.27±3.53) nmol/L,重度患者组为(19.72±4.66) nmol/L,MDA含量随着患病程度加重而增加,轻度患者组与正常对照组比较,差异无统计学意义(P>0.05);中度患者组和重度患者组与正常对照组及轻度患者组比较,差异有统计学意义(P<0.001).HBVX mRNA表达与ROS,MDA含量呈正相关(Spearman's r=0.382,r=0.467,P<0.05).结论:慢性乙肝感染者外周血PBMC中HBVX mRNA表达随疾病程度加重而增加,其与患者体内氧化应激反应呈正相关.
    • 高慧; 何金花; 崔美玲; 陈伟明; 潘莲娣
    • 摘要: Objective To understand the mutation of hepatitis B virus X gene by gene sequencing from HBV infected serum. Methods HBV DNAs were extracted from the serum of 133 infectors from Panyu area, and HBV X genes were amplified by PCR and then sequenced. According to the different courses of disease, patients were divided into four groups:36 cases of hepatitis B virus carrier (ASC), 40 cases of chronic hepatitis (CHB), 34 cases of liv-er cirrhosis (LC) and 23 cases of hepatocellular carcinoma (HCC). And the results were comprehensively and compara-tively analyzed. Results The mutation numbers per capita of four groups were as follows:ASC group (5.17 ± 0.86), CHB group (5.05±0.80), LC group (3.43±0.86) and HCC group (2.05±0.44). And there were no statistically significant difference between the ASC group, CHB group and LC group (P>0.05), while the number in HCC group was lower than that in the other three groups (P0.05),而HCC组均低于ASC组、CHB组、LC组,差异均有统计学意义(P<0.05);HBV X基因突变检出率排前4位的位点是:A1762T联合G1764A双变异为85例(63.91%),T1719G联合G1721A同时变异为77例(57.89%),T1544A为62例(46.62%),T1753C为45例(33.83%)。前4位突变检出率均在LC组中最高(P<0.05)。结论对HBV X基因的高突变位点进行检测为肝硬化及肝癌的发病机制提供线索,对尽早预防和预测肝硬化及肝癌具有重要意义。
    • 高慧; 何金花; 崔美玲; 刘志伟; 梁紫甄
    • 摘要: Objective To investigate the BCP double mutation (A1762T/G1764A) and CP gathered varia-tion of serum hepatitis B virus (HBV) X gene region and their clinical significance in 133 patients with hepatitis B from Panyu district of Guangzhou. Methods Alanine aminotransferase (ALT), aspartate aminotransferase (AST) were tested by velocity method. ELISA and PCR were used to detect HBeAg and HBV DNA copy number respective-ly. The HBV X gene was amplified by PCR and then sequenced. In order to make a comprehensive comparative analy-sis, the results were divided into four groups: BCP double mutation, CP gathered variation, BCP double mutation merge CP gathered variation, and no mutation. Results (1) The positive rate of HBeAg in BCP double mutant group was the lowest (P0.05). The copy number of HBV DNA BCP double mutation and accumulation of CP mutation in HBeAg positive group were higher than that in HBeAg negative group (P0.05). Conclusion To assess the disease of patients with hepatitis B by routine testing of the related indicators is not comprehensive. With permission, combining the common mutations of BCP double mutation (A1762T/G1764A) and CP gathered variation of HBV X gene region with clinical information can help the doctors make more accurate diagnoses.%目的 探讨广州市番禺区133例乙型肝炎患者血清中HBV X基因区BCP双变异(A1762T/G1764A)和CP聚集变异情况及其临床意义.方法 丙氨酸氨基转移酶(ALT)、天门冬氨酸氨基转移酶(AST)采用速率法;ELISA和PCR法分别检测HBeAg和HBV DNA拷贝数;并以PCR方法扩增HBV X基因,再进行测序,最后将结果分成四组(BCP双变异、CP聚集变异、BCP双变异合并CP聚集变异,无BCP双变异和CP聚集变异)进行综合比较分析.结果 (1) HBeAg阳性在BCP双变异组中检出率最低(P0.05);BCP双变异、CP聚集变异HBeAg阳性组的HBV DNA拷贝数均高于HBeAg阴性组(P0.05).结论 乙型肝炎患者常规的相关指标检测对病情的评估尚不全面,在条件许可情况下,对HBV X基因区的BCP双变异(A1762T/G1764A)和CP聚集变异的常见突变位点进行检测,并结合其他临床资料进行综合分析可做出较正确的诊断.
    • 陈增银; 史光军; 类成刚; 赵业民
    • 摘要: ObjectiveTo investigate the HepG2 liver cancer cells which are transected by X gene of liposome, then explore the expression of X gene, HNF-4αand NF-κB to investigated the relation of X gene and HNF-4α,NF-kappa B in liver cancer cells.Methods The HepG2 adult liver cancer cells are divided into three groups: transfected with HBx cells Group, cells transfected with empty vector group and untransfected HepG2 cells as control group. The expression of X gene, HNF-4α and NF-κB nuclear RNA are detected by PCR in each group. The expression of NF-κB nuclear protein is detected by Western blot.Results The expression of HNF-4α in the transfected HBx cells group is less than that of the other two groups, and the NF-κB expression in the transfected HBx cells group is more than the other two groups. In the same group, the HNF-4α is negatively correlated with NF-κB expression.Conclusion The X gene was successfully transfected into HepG2 cells, and the expression of X gene protein in transfected with HBx cells can inhibit the expression of HNF-4α. Then it promotes the activity of NF-κB and the occurrence of hepatocellular carcinoma.%目的:通过检测转染X基因HepG2人肝癌细胞脂质体中NF-4α及NF-κB的表达,探讨X基因与HNF-4α,NF-κB及肝癌细胞的关系。方法将HepG2成人肝癌细胞分成三组:将HBx真核表达载体pcDNA3/HBx转入HepG2细胞做为实验组;以转染空载体细胞组和未转染HepG2细胞组作为对照组。PCR检测各组X基因、HNF-4α及NF-κB的核内RNA表达情况, Western Blot检测NF-κB核内蛋白的表达情况。结果转染HBx细胞组中HNF-4α的表达值低于另两组,而NF-κB表达值高于另两组。同组中,HNF-4α的表达值与NF-κB表达值呈负相关。结论成功将X基因转染入HepG2细胞,并在细胞中表达,转染HBx基因可通过X蛋白抑制HNF-4α的表达而增强NF-κB的活性,促进肝癌细胞增殖致其癌变及生长转移等方面加速。
    • 董晖; 徐岩; 刘丽秋; 关广聚; 蒋伟
    • 摘要: 目的 探讨乙型肝炎病毒(HBV)X基因突变在HBV相关性肾小球肾炎(HBV-GN)发病中的意义.方法 分别从50例HBV-GN患者及60例无症状乙肝病毒携带者(对照组)中采集静脉血,提取DNA测定HBV DNA含量并以聚合酶链反应技术对HBV DNA的X基因进行扩增,并对扩增产物进行测序.测定50例HBV-GN患者24h尿蛋白量.结果 (1)HBV-GN组和对照组的年龄及男女比例差异无统计学意义(P> 0.05);42例X基因变异HBV-GN患者与对照组间HBV DNA复制水平差异无统计学意义(P> 0.05);42例伴有X基因变异HBV-GN患者24 h尿蛋白量高于无X基因变异HBV-GN患者,差异有统计学意义(P<0.05).(2)HBV-GN组有42例发生了核苷酸序列点突变,并导致了氨基酸的替代,占总人数的84%,核苷酸序列错义突变主要发生于以下位点:nt1653、nt1726、nt1727、nt1730、nt1753、nt1762、nt1764,突变位点集中在X基因反式作用调控区.(3)对照组中有5例发生了核苷酸序列错义突变,仅占8%,分别是nt1632及nt1635,且突变均在非功能区域.结论 大多数HBV-GN患者存在X基因一些关键位点的突变,并导致了氨基酸的替代,X基因突变HBV-GN患者尿蛋白量增加,提示这些关键位点的突变可能在HBV-GN的致病中起到重要作用.%Objective To determine whether mutation of Hepatitis B virus (HBV) X gene is associated with hepatitis B virus-associated glomerulonephritis (HBV-GN).Methods The venous blood was collected from 50 patients with HBV-GN and 60 patients with asymptomatic HBV carriers (control group).Serum HBV DNA was extracted to determine the serum titer of HBV-DNA and then polymerase chain reaction (PCR) was used to detect the HBV X gene mutation.Results (1)There were not statistical significance between age and gender in HBV-GN group and control group (P >0.05).There were not statistical significance of serum replication level of HBV DNA in HBV-GN with X gene mutation and control group (P > 0.05).Urine protein excretion in HBV-GN group with or without X gene mutation was found with statistical significance (P < 0.05).(2)Nucleotide mutations [84% (42/50)] resulted in amino acid substitution in HBV-GN.Nucleotide mutations changed in transfunction control region of X gene,including position nt1653,nt1726,nt1727,nt1730,nt1753,nt1762 and nt1764.(3)Nucleotide mutations [8%(5/60)] resulted in amino acid substitution in control group.Nucleotide mutations changed in position nt1632 and nt1635,located in non-functional region.Conclusions HBV X gene mutations and the subsequent amino acid substitutions are found in HBV-GN.The urine protein excretion level increases in patients with X mutation,suggesting that these mutations may play an important role in the pathogenesis of HBV-GN.
    • 王书训
    • 摘要: 本文对乙肝病毒感染者中X基因部分区段及其编码的氨基酸变异情况进行了分析。采用巢氏PCR扩增X基因部分区段,对有特异性条带的扩增产物进行序列测定,测序结果用相关软件进行处理,翻译成蛋白质后与文献中已经公布的和疾病相关的变异位点进行比对并进行统计。在90份样本中,扩增出X基因的占42份,与此同时,测序成功的为28份。翻译为氨基酸之后,在X蛋白的C端存在着不同程度的变异,导致X蛋白整个读码框架的改变,主要表现为X蛋白的反式激活能力丢失,这种丢失会造成C末端靶动凋亡与N末端抗凋亡能力的平衡被改变甚至被破坏。
    • 邹淑慧; 周艳; 余克花; 刘金辉
    • 摘要: 目的 初步调查儿童感染的乙型肝炎病毒(HBV)X基因的分子特征.方法 收集20例儿童慢性乙型肝炎(乙肝)患者的血清标本,抽提血清中的HBV DNA,采用PCR扩增HBV X基因并测序,利用Clustal X、Bioedit软件对PCR产物序列进行X基因的突变分析.结果 20例HBV X基因突变区主要集中在羧基端aa120-150,氨基酸序列突变点分别为I127T、K130M、V131I、P145R、A146G/C、C148R/H和N149G/D;核苷酸序列突变点分别为T1753C、A1762T、G1764A、T1800C、C1807G、C1810G、A1811T、A1814C、T1815C、C1817T、A1819G和C1820A.结论 儿童感染的HBV X存在突变,集中在羧基端aa120-150,对儿童乙肝的演变会产生重要影响.
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