In order to further study functions of the porcine myostatin gene, we analyzed the polymorphisms of porcine myostatin gene in promoter region among different breeds including Yorkshire, Landrace, Duroc, Junmu, Min pig...In order to further study functions of the porcine myostatin gene, we analyzed the polymorphisms of porcine myostatin gene in promoter region among different breeds including Yorkshire, Landrace, Duroc, Junmu, Min pig and Sanjiang white pig by PCR-RFLPs. The allele T dominated in the imported lean-type pig breeds such as Yorkshire, Landrace and Duroc. No allele A was detected in Junmu and Sanjiang white pig, and the frequencies of three genotypes were about equal in Min pig. The result using X2 analysis showed that the distribution of three genotypes was related to pig breeds.展开更多
Polymorphisms of porcine ob exon 1 and exon 2 among different breeds including Landrace, Duroc, Min pig, Yorkshire pig, double-muscled Yorkshire, Sanjiang pig, wild boar and cross bred pig were analyzed by PCR-SSCP in...Polymorphisms of porcine ob exon 1 and exon 2 among different breeds including Landrace, Duroc, Min pig, Yorkshire pig, double-muscled Yorkshire, Sanjiang pig, wild boar and cross bred pig were analyzed by PCR-SSCP in the current study. Three pairs of primers according to the ob cDNA sequence obtained from GenBank database were designed to amplify the first two exons, which were then genotyped by SSCP. The T to C transversion was found in exon 2, which resulted in 3 genotypes named AA, AB and BB, respectively in these different porcine breeds. There was only genotype of BB in the Min pig, while no allele B was detected in double-muscled Yorkshire, and the 3 genotypes all existed in other breeds. There was significant difference on the genotype frequencies in various breeds. There was a trend that the frequency of allele A was positively associated with muscle ratio distribution on the one hand, and on the other hand, it was linked to the selected direction. So the allele A could be used as a selective marker of high muscle ratio in pig breeding.展开更多
Objective Tacrolimus is an immunosuppressive drug with narrow therapeutic range and wide interindividual variation in its pharmacokinetics.Tacrolimus is a substrate of cytochrome P450(CYP)3A5.The aim of this study was...Objective Tacrolimus is an immunosuppressive drug with narrow therapeutic range and wide interindividual variation in its pharmacokinetics.Tacrolimus is a substrate of cytochrome P450(CYP)3A5.The aim of this study was to evaluate whether the A6986G polymorphism is associated with tacrolimus concentration/dose ratio.Methods Fifty-two Chinese renal transplant patients were enrolled in this study.Their body weight,dosage and concentration of tacrolimus were observed.CYP3A5 genotype was determined by polymerase chain reaction followed by restriction fragment length polymorphism analysis.Results A significant association was found between tacrolimus levels per dose/kg/d and CYP3A5 gene A6986G polymorphism(P<0.001).The CYP3A5*3*3 patients have a significantly higher tacrolimus level/dose than CYP3A5*1*1 and CYP3A5*1*3.Conclusions CYP3A5 gene A6986G polymorphism is associated with tacrolimus pharmacokinetics and dose requirements.Pharmacogenetic methods could be employed prospectively to help the dose selection and to individualize immunosuppressive therapy according to the result.展开更多
【目的】挖掘西瓜耐盐相关的关键候选基因,为探究西瓜应答盐胁迫的机制、培育耐盐西瓜新品种奠定重要基础。【方法】通过对121份西瓜核心种质材料的耐盐性相关指标进行测定,利用全基因组关联分析(genome-wide association study,GWAS)...【目的】挖掘西瓜耐盐相关的关键候选基因,为探究西瓜应答盐胁迫的机制、培育耐盐西瓜新品种奠定重要基础。【方法】通过对121份西瓜核心种质材料的耐盐性相关指标进行测定,利用全基因组关联分析(genome-wide association study,GWAS)定位与表型数据相关的单核苷酸多态性(single nucleotide polymorphisms,SNPs)变异位点,并对候选区间内的基因进行功能注释,最终利用耐盐材料和盐敏感材料的转录组数据确定耐盐相关的关键候选基因。【结果】在根表面积指标下鉴定出1个显著SNP位点,在候选区间内获得23个基因;在根K^(+)含量指标下鉴定出25个显著SNP位点,在候选区间内获得25个基因;在根Na^(+)含量指标下鉴定出2个显著SNP位点,在候选区间内获得10个基因;在根可溶性糖含量指标下鉴定出1个显著SNP位点,在候选区间内获得18个基因。所有候选基因在150 mmol·L^(-1)Na Cl处理前后的耐盐和盐敏感材料中,Cla97C08G145130、Cla97C04G073300和Cla97C01G009540三个候选基因的表达量均受盐胁迫的诱导显著上调表达。【结论】推测Cla97C08G145130、Cla97C04G073300和Cla97C01G009540为西瓜耐盐相关的关键候选基因,为解析提高西瓜耐盐性的分子机制及开发分子标记用于辅助选择育种奠定了基础。展开更多
基金Key Items of Plan of Science and Technology of Heilongjiang Province (CGB01B104)
文摘In order to further study functions of the porcine myostatin gene, we analyzed the polymorphisms of porcine myostatin gene in promoter region among different breeds including Yorkshire, Landrace, Duroc, Junmu, Min pig and Sanjiang white pig by PCR-RFLPs. The allele T dominated in the imported lean-type pig breeds such as Yorkshire, Landrace and Duroc. No allele A was detected in Junmu and Sanjiang white pig, and the frequencies of three genotypes were about equal in Min pig. The result using X2 analysis showed that the distribution of three genotypes was related to pig breeds.
文摘Polymorphisms of porcine ob exon 1 and exon 2 among different breeds including Landrace, Duroc, Min pig, Yorkshire pig, double-muscled Yorkshire, Sanjiang pig, wild boar and cross bred pig were analyzed by PCR-SSCP in the current study. Three pairs of primers according to the ob cDNA sequence obtained from GenBank database were designed to amplify the first two exons, which were then genotyped by SSCP. The T to C transversion was found in exon 2, which resulted in 3 genotypes named AA, AB and BB, respectively in these different porcine breeds. There was only genotype of BB in the Min pig, while no allele B was detected in double-muscled Yorkshire, and the 3 genotypes all existed in other breeds. There was significant difference on the genotype frequencies in various breeds. There was a trend that the frequency of allele A was positively associated with muscle ratio distribution on the one hand, and on the other hand, it was linked to the selected direction. So the allele A could be used as a selective marker of high muscle ratio in pig breeding.
基金Project(03GZ3072)supported by the Science end Technology Departmeat of Hunan Provincepproject(2004035206)supported by the China Poatdoctoral Foundationprojecl(30300383)supported by the National Natuml Sciences Foundastion of China
文摘Objective Tacrolimus is an immunosuppressive drug with narrow therapeutic range and wide interindividual variation in its pharmacokinetics.Tacrolimus is a substrate of cytochrome P450(CYP)3A5.The aim of this study was to evaluate whether the A6986G polymorphism is associated with tacrolimus concentration/dose ratio.Methods Fifty-two Chinese renal transplant patients were enrolled in this study.Their body weight,dosage and concentration of tacrolimus were observed.CYP3A5 genotype was determined by polymerase chain reaction followed by restriction fragment length polymorphism analysis.Results A significant association was found between tacrolimus levels per dose/kg/d and CYP3A5 gene A6986G polymorphism(P<0.001).The CYP3A5*3*3 patients have a significantly higher tacrolimus level/dose than CYP3A5*1*1 and CYP3A5*1*3.Conclusions CYP3A5 gene A6986G polymorphism is associated with tacrolimus pharmacokinetics and dose requirements.Pharmacogenetic methods could be employed prospectively to help the dose selection and to individualize immunosuppressive therapy according to the result.
