AIM: To investigate the associations of hepatitis B virus (HBV) genotype with HBeAg and anti-HBe status, alanine aminotransferase (ALT) levels and HBV-DNA detection in different groups of HBV-infected patients in sout...AIM: To investigate the associations of hepatitis B virus (HBV) genotype with HBeAg and anti-HBe status, alanine aminotransferase (ALT) levels and HBV-DNA detection in different groups of HBV-infected patients in southwest Iran. METHODS: A total of 89 HBsAg-positive serum samples were collected from the same number of patients. All sera were then investigated to determine HBV DNA and serological markers. For all the polymerase chain reaction (PCR)-positive samples, biochemical, histopathological assays and genotyping were also performed. RESULTS: Genotype D was the only type of HBV foundin different clinical forms of acute and chronic infections. There was a high prevalence of HBeAg-negative HBV- infected patients with chronic hepatitis (52.7%). Out of 55 patients with chronic hepatitis, seven (12.7%) were diagnosed with cirrhosis. A significant association between the presence of anti-HBe antibody and an increase in ALT level, among either HBeAg-negative (P = 0.01) or HBeAg-positive (P = 0.026) patients, was demonstrated. No significant differences were observed between the clinical outcomes of HBeAg-positive and -negative individuals (P = 0.24). CONCLUSION: Genotype D has been recognized as the only type of HBV found in different clinical forms of HBV infections, including cirrhosis, among the residents of southwest Iran. Anti-HBe possibly plays a role in disease progression in some patients with chronic hepatitis, at least for a period of disease.展开更多
目的分析肺炎链球菌(SP)肺炎、呼吸道合胞病毒(RSV)肺炎患儿外周血25羟基维生素D(25-OHVD)、T淋巴细胞亚群、B淋巴细胞以及自然杀伤(NK)细胞的变化。方法对入院60例儿童行多病原联合检测,包括直接免疫荧光法检测7种病毒抗原、痰细菌培...目的分析肺炎链球菌(SP)肺炎、呼吸道合胞病毒(RSV)肺炎患儿外周血25羟基维生素D(25-OHVD)、T淋巴细胞亚群、B淋巴细胞以及自然杀伤(NK)细胞的变化。方法对入院60例儿童行多病原联合检测,包括直接免疫荧光法检测7种病毒抗原、痰细菌培养、聚合酶链反应(PCR)检测痰中人类偏肺病毒和博卡病毒、酶联免疫吸附测定(ELISA)法检测血清肺炎支原体IgM抗体,明确SP、RSV感染,并用流式细胞仪检测部分患儿外周血T淋巴细胞亚群、B淋巴细胞以及NK细胞,ELISA法进行25-OH-VD水平的测定。并以30例同龄健康儿童作为对照组。结果 RSV肺炎患儿25-OH-VD、CD8+T细胞及NK细胞比对照组低,分别为:46.20(42.85)nmol/L vs 68.25(19.23)nmol/L,(16.63±4.56)%vs(22.04±3.40)%,6.70(7.00)%vs 13.65(5.10)%(均P<0.05);但CD4+T细胞、B淋巴细胞CD19+较对照组高,分别为:(42.58±6.88)%vs(36.20±3.04)%,(28.25±8.85)%vs(19.38±5.76)%(均P<0.05)。SP肺炎患儿25-OH-VD及NK细胞比对照组低,分别为:61.80(15.70)nmol/L vs 68.25(19.23)nmol/L,6.25(7.57)%vs 13.65(5.10)%(均P<0.05);B淋巴细胞CD19+较对照组高,(29.70±9.72)%vs(19.38±5.76)%(P<0.05)。两感染组比较,RSV组CD4+T细胞升高,而CD8+T细胞明显下降。结论 SP、RSV感染的发生与维生素D缺乏密切相关。RSV感染后刺激机体产生细胞免疫和体液免疫反应,而SP感染后则产生以体液免疫为主的免疫反应。展开更多
目的利用巢式PCR方法检测圈养的食蟹猴(Macaca fascicularis)和猕猴(Macaca mulatta)中猴D型逆转录病毒(Simian Type D Retrovirus SRV)和猴泡沫病毒(Simian foamy virus SFV)。方法针对SRV-env和SFV-pol基因的保守区序列设计特异性外引...目的利用巢式PCR方法检测圈养的食蟹猴(Macaca fascicularis)和猕猴(Macaca mulatta)中猴D型逆转录病毒(Simian Type D Retrovirus SRV)和猴泡沫病毒(Simian foamy virus SFV)。方法针对SRV-env和SFV-pol基因的保守区序列设计特异性外引物,然后再设计特异性内引物。将外引物扩增出的片段克隆到PJET1.2blunt载体中作为阳性对照,运用NCBI中BLAST软件比对测序结果。用巢式PCR方法分别检测食蟹猴和猕猴中SRV和SFV。结果发现食蟹猴中SFV感染率为65.2%,SRV感染率为9.5%,猕猴中SFV感染率为60.5%,SRV感染率为12.8%。结论圈养的食蟹猴和猕猴SFV的感染率均较高,SRV感染率很低。展开更多
文摘AIM: To investigate the associations of hepatitis B virus (HBV) genotype with HBeAg and anti-HBe status, alanine aminotransferase (ALT) levels and HBV-DNA detection in different groups of HBV-infected patients in southwest Iran. METHODS: A total of 89 HBsAg-positive serum samples were collected from the same number of patients. All sera were then investigated to determine HBV DNA and serological markers. For all the polymerase chain reaction (PCR)-positive samples, biochemical, histopathological assays and genotyping were also performed. RESULTS: Genotype D was the only type of HBV foundin different clinical forms of acute and chronic infections. There was a high prevalence of HBeAg-negative HBV- infected patients with chronic hepatitis (52.7%). Out of 55 patients with chronic hepatitis, seven (12.7%) were diagnosed with cirrhosis. A significant association between the presence of anti-HBe antibody and an increase in ALT level, among either HBeAg-negative (P = 0.01) or HBeAg-positive (P = 0.026) patients, was demonstrated. No significant differences were observed between the clinical outcomes of HBeAg-positive and -negative individuals (P = 0.24). CONCLUSION: Genotype D has been recognized as the only type of HBV found in different clinical forms of HBV infections, including cirrhosis, among the residents of southwest Iran. Anti-HBe possibly plays a role in disease progression in some patients with chronic hepatitis, at least for a period of disease.
文摘目的分析肺炎链球菌(SP)肺炎、呼吸道合胞病毒(RSV)肺炎患儿外周血25羟基维生素D(25-OHVD)、T淋巴细胞亚群、B淋巴细胞以及自然杀伤(NK)细胞的变化。方法对入院60例儿童行多病原联合检测,包括直接免疫荧光法检测7种病毒抗原、痰细菌培养、聚合酶链反应(PCR)检测痰中人类偏肺病毒和博卡病毒、酶联免疫吸附测定(ELISA)法检测血清肺炎支原体IgM抗体,明确SP、RSV感染,并用流式细胞仪检测部分患儿外周血T淋巴细胞亚群、B淋巴细胞以及NK细胞,ELISA法进行25-OH-VD水平的测定。并以30例同龄健康儿童作为对照组。结果 RSV肺炎患儿25-OH-VD、CD8+T细胞及NK细胞比对照组低,分别为:46.20(42.85)nmol/L vs 68.25(19.23)nmol/L,(16.63±4.56)%vs(22.04±3.40)%,6.70(7.00)%vs 13.65(5.10)%(均P<0.05);但CD4+T细胞、B淋巴细胞CD19+较对照组高,分别为:(42.58±6.88)%vs(36.20±3.04)%,(28.25±8.85)%vs(19.38±5.76)%(均P<0.05)。SP肺炎患儿25-OH-VD及NK细胞比对照组低,分别为:61.80(15.70)nmol/L vs 68.25(19.23)nmol/L,6.25(7.57)%vs 13.65(5.10)%(均P<0.05);B淋巴细胞CD19+较对照组高,(29.70±9.72)%vs(19.38±5.76)%(P<0.05)。两感染组比较,RSV组CD4+T细胞升高,而CD8+T细胞明显下降。结论 SP、RSV感染的发生与维生素D缺乏密切相关。RSV感染后刺激机体产生细胞免疫和体液免疫反应,而SP感染后则产生以体液免疫为主的免疫反应。
文摘目的利用巢式PCR方法检测圈养的食蟹猴(Macaca fascicularis)和猕猴(Macaca mulatta)中猴D型逆转录病毒(Simian Type D Retrovirus SRV)和猴泡沫病毒(Simian foamy virus SFV)。方法针对SRV-env和SFV-pol基因的保守区序列设计特异性外引物,然后再设计特异性内引物。将外引物扩增出的片段克隆到PJET1.2blunt载体中作为阳性对照,运用NCBI中BLAST软件比对测序结果。用巢式PCR方法分别检测食蟹猴和猕猴中SRV和SFV。结果发现食蟹猴中SFV感染率为65.2%,SRV感染率为9.5%,猕猴中SFV感染率为60.5%,SRV感染率为12.8%。结论圈养的食蟹猴和猕猴SFV的感染率均较高,SRV感染率很低。
