Objective To investigate the relationship of four single nucleotide polymorphism （SNP） haplotypes in the angiotensinogen （AGT） gene to the primary hypertension with or without cerebral infarction in the Li nationa...Objective To investigate the relationship of four single nucleotide polymorphism （SNP） haplotypes in the angiotensinogen （AGT） gene to the primary hypertension with or without cerebral infarction in the Li nationality of Hainan, China. Methods Total 300 subjects were allocated into three different groups： Groupl, 100 patients who have primary hypertension; Group 2, 100 patients who have primary hypertension with cerebral infarction; and control group, 100 healthy individuals. The genotypes of all subjects were determined by PCR-sequencing to analyze the four poly- morphisms at position - 152 （G-A）, -20 （A-C）, - 18 （C-T）, and -6 （A-G） in the promoter region of AGT. Results The frequen- cies ofCT genotype of AGT-18 and T allele in Group 1 （P = 0.003, P = 0.004） and Group 2 （P = 0.002, P = 0.002） were both significantly higher than in healthy controls. The frequency of G allele of AGT-6 was significantly higher in Group 2 than in the control group （P = 0.016）, while there is no significant difference between Group 1 and the control. Haplotype analysis revealed that H6 haplotype frequency which included -20C and -6G was significantly increased in Group 2 （P = 0.003） compared with the control group, while H5 haplotype frequency which included -20C and -18T was signifi- cantly increased in Group 1 （P = 0.006） versus the control. Conclusion The -20 （A-C） and - 18 （C-T） of the AGT may play an important role in pathogenesis of primary hypertension; and -20 （A-C）, -18 （C-T）, and -6 （A-G） may be the genetic risk factors for the onset of primary hypertension with cerebral infarction in the Li nationality of Halnan, China.展开更多
Coronary heart disease （CHD） is a major health problem in many countries and its pathogenesis is not yet fully understood, contributing to significant morbidity and mortality. Accumulated evidence manifest clearly t...Coronary heart disease （CHD） is a major health problem in many countries and its pathogenesis is not yet fully understood, contributing to significant morbidity and mortality. Accumulated evidence manifest clearly that CHD is determined by a complex interplay of genetic and environmental factors. Many clinical data have showed that the renin-angiotensin system （RAS） hypertension and CHD involved in many cardiovascular diseases, such as Angiotensinogen （AGT） is the key components of the RAS system, and two gene polymorphisms of AGT had been detected of the CHD risk： M235T and T174M. This article reviews the effects of AGT gene polymorphisms on the CHD.展开更多
Objective To investigate whether angiotensinogen (AGT) gene M235T variant is associated with non insulin dependent diabetes mellitus without nephropathy (DN -), and diabetic nephropathy (DN +) in Chinese non ins...Objective To investigate whether angiotensinogen (AGT) gene M235T variant is associated with non insulin dependent diabetes mellitus without nephropathy (DN -), and diabetic nephropathy (DN +) in Chinese non insulin dependent diabetes mellitus (NIDDM) Methods The subjects in DN + group, DN - group and control group were well matched with sex, age and duration of disease, and the two case groups were divided into two subgroups as with and without hypertension respectively The M235T polymorphism of AGT gene of 84 cases with DN -, 96 patients with DN + and 98 controls were determined by polymerase chain reaction (PCR) amplification and restriction fragment length polymorphism (RFLP) analysis of the region of the variant, i e M235T polymorphism Results The increased frequencies of T allele (0 82) and TT genotype (0 70) were observed in 96 subjects with DN + as compared with 98 control subjects (0 63 and 0 43, respectively, P =0 003, P =0 0004) The odds ratio associated with TT genotype was 3 47 (95%CI: 1 51-7 94; P =0 0033) for diabetic nephropathy in analysis adjusted for several risk factors of diabetic nephropathy, such as body mass index, systolic and diastolic blood pressure, serum cholesterol, low density lipoprotein and high density lipoprotein Subgroup analysis of the 67 patients in DN + group with hypertension revealed similar distributions of M235T genotypes and alleles to those in the DN + without hypertension subgroup There was no difference in allele and genotype distribution between 84 DN - patients and the controls Similarly, frequencies of the AGT M235T genotype and allele were not different between two DN - subgroups Conclusions AGT gene M235T polymorphism is associated with diabetic nephropathy in NIDDM TT genotype of the AGT gene might be an independent risk factor of diabetic nephropathy in Chinese NIDDM patients展开更多
【目的】探讨中国南方部分汉族人群的冠心病患者中,肾素-血管紧张素系统中的关键成分即血管紧张素转换酶(ACE)及血管紧张素原(AGT)双基因多态性与冠心病合并慢性心力衰竭(CHF)发病的关系。【方法】应用聚合酶链反应及限制性片段长度多...【目的】探讨中国南方部分汉族人群的冠心病患者中,肾素-血管紧张素系统中的关键成分即血管紧张素转换酶(ACE)及血管紧张素原(AGT)双基因多态性与冠心病合并慢性心力衰竭(CHF)发病的关系。【方法】应用聚合酶链反应及限制性片段长度多态性技术,对215例冠心病患者的ACE基因插入/缺失(I/D)及AGTM235T多态性进行检测。将其中105例合并CHF者作为病例组,其余110例心功能正常者作为对照组。【结果】冠心病合并CHF组DD基因型及D等位基因的频率均高于对照组(前者为45.7%vs23.6%,后者为64.8% vs 43.6%,P<0.01);AGT基因M235T多态性在两组中的分布无统计学差异;联合分析ACE与AGT基因多态性显示,两组中同时具有DD型ACE基因及TT型AGT基因的频率分别为27.6%及14.5%,前者明显高于后者。与Ⅱ+MM组合相比,具有该联合基因型的冠心病患者发生CHF的OR为5.039,较单基因ACEDD型发生CHF的OR增高。【结论】ACE基因I/D多态性与中国南方部分汉族人群冠心病患者发生CHF有关,DD型ACE基因可能是该地区CHF发病的遗传危险因素。单独的AGT基因M235T多态性似与该地区冠心病患者发生CHF无关,但联合ACE基因分析则发现,ACE和AGT基因在CHF的发生中具有协同作用,DD型基因的冠心病患者若同时携带有TT基因,发生CHF的机率增高。展开更多
基金the Science Foundation of the Health Department of Hainan Province, China （No. 2005-65）.
文摘Objective To investigate the relationship of four single nucleotide polymorphism （SNP） haplotypes in the angiotensinogen （AGT） gene to the primary hypertension with or without cerebral infarction in the Li nationality of Hainan, China. Methods Total 300 subjects were allocated into three different groups： Groupl, 100 patients who have primary hypertension; Group 2, 100 patients who have primary hypertension with cerebral infarction; and control group, 100 healthy individuals. The genotypes of all subjects were determined by PCR-sequencing to analyze the four poly- morphisms at position - 152 （G-A）, -20 （A-C）, - 18 （C-T）, and -6 （A-G） in the promoter region of AGT. Results The frequen- cies ofCT genotype of AGT-18 and T allele in Group 1 （P = 0.003, P = 0.004） and Group 2 （P = 0.002, P = 0.002） were both significantly higher than in healthy controls. The frequency of G allele of AGT-6 was significantly higher in Group 2 than in the control group （P = 0.016）, while there is no significant difference between Group 1 and the control. Haplotype analysis revealed that H6 haplotype frequency which included -20C and -6G was significantly increased in Group 2 （P = 0.003） compared with the control group, while H5 haplotype frequency which included -20C and -18T was signifi- cantly increased in Group 1 （P = 0.006） versus the control. Conclusion The -20 （A-C） and - 18 （C-T） of the AGT may play an important role in pathogenesis of primary hypertension; and -20 （A-C）, -18 （C-T）, and -6 （A-G） may be the genetic risk factors for the onset of primary hypertension with cerebral infarction in the Li nationality of Halnan, China.
文摘Coronary heart disease （CHD） is a major health problem in many countries and its pathogenesis is not yet fully understood, contributing to significant morbidity and mortality. Accumulated evidence manifest clearly that CHD is determined by a complex interplay of genetic and environmental factors. Many clinical data have showed that the renin-angiotensin system （RAS） hypertension and CHD involved in many cardiovascular diseases, such as Angiotensinogen （AGT） is the key components of the RAS system, and two gene polymorphisms of AGT had been detected of the CHD risk： M235T and T174M. This article reviews the effects of AGT gene polymorphisms on the CHD.
文摘Objective To investigate whether angiotensinogen (AGT) gene M235T variant is associated with non insulin dependent diabetes mellitus without nephropathy (DN -), and diabetic nephropathy (DN +) in Chinese non insulin dependent diabetes mellitus (NIDDM) Methods The subjects in DN + group, DN - group and control group were well matched with sex, age and duration of disease, and the two case groups were divided into two subgroups as with and without hypertension respectively The M235T polymorphism of AGT gene of 84 cases with DN -, 96 patients with DN + and 98 controls were determined by polymerase chain reaction (PCR) amplification and restriction fragment length polymorphism (RFLP) analysis of the region of the variant, i e M235T polymorphism Results The increased frequencies of T allele (0 82) and TT genotype (0 70) were observed in 96 subjects with DN + as compared with 98 control subjects (0 63 and 0 43, respectively, P =0 003, P =0 0004) The odds ratio associated with TT genotype was 3 47 (95%CI: 1 51-7 94; P =0 0033) for diabetic nephropathy in analysis adjusted for several risk factors of diabetic nephropathy, such as body mass index, systolic and diastolic blood pressure, serum cholesterol, low density lipoprotein and high density lipoprotein Subgroup analysis of the 67 patients in DN + group with hypertension revealed similar distributions of M235T genotypes and alleles to those in the DN + without hypertension subgroup There was no difference in allele and genotype distribution between 84 DN - patients and the controls Similarly, frequencies of the AGT M235T genotype and allele were not different between two DN - subgroups Conclusions AGT gene M235T polymorphism is associated with diabetic nephropathy in NIDDM TT genotype of the AGT gene might be an independent risk factor of diabetic nephropathy in Chinese NIDDM patients
文摘【目的】探讨中国南方部分汉族人群的冠心病患者中,肾素-血管紧张素系统中的关键成分即血管紧张素转换酶(ACE)及血管紧张素原(AGT)双基因多态性与冠心病合并慢性心力衰竭(CHF)发病的关系。【方法】应用聚合酶链反应及限制性片段长度多态性技术,对215例冠心病患者的ACE基因插入/缺失(I/D)及AGTM235T多态性进行检测。将其中105例合并CHF者作为病例组,其余110例心功能正常者作为对照组。【结果】冠心病合并CHF组DD基因型及D等位基因的频率均高于对照组(前者为45.7%vs23.6%,后者为64.8% vs 43.6%,P<0.01);AGT基因M235T多态性在两组中的分布无统计学差异;联合分析ACE与AGT基因多态性显示,两组中同时具有DD型ACE基因及TT型AGT基因的频率分别为27.6%及14.5%,前者明显高于后者。与Ⅱ+MM组合相比,具有该联合基因型的冠心病患者发生CHF的OR为5.039,较单基因ACEDD型发生CHF的OR增高。【结论】ACE基因I/D多态性与中国南方部分汉族人群冠心病患者发生CHF有关,DD型ACE基因可能是该地区CHF发病的遗传危险因素。单独的AGT基因M235T多态性似与该地区冠心病患者发生CHF无关,但联合ACE基因分析则发现,ACE和AGT基因在CHF的发生中具有协同作用,DD型基因的冠心病患者若同时携带有TT基因,发生CHF的机率增高。
