Study of Semen Cryopreservation for Banna Mini-pig Inbred Line

In this study, different concentrations of glycerol were added to semen cryoprotective extenders of Banna Mini-pig inbred line (BMI), different thawing solutions and thawing methods were studied. After thawing, the motility, the rates of plasma integrity and acrosome integrity were compared to optimize the cryopreservation method of BMI semen. The results showed that the motility, the rates of plasma integrity and acrosome integrity were significantly higher in 2% and 3% glycerol groups than those in 1%, 4% and 5% glycerol groups (P<0.05);The motility, the rates of plasma integrity and acrosome integrity were significantly higher in thawing solution Ⅰ than those in thawing solution Ⅱ, Ⅲ and Ⅳ (P<0.05); Through comparing the motility, the rates of plasma integrity and acrosome integrity, the thawing effect in 40℃ 6 s and 50℃ 6 s groups were better than that in 38℃ 30 s (P<0.05). In conclusion, the optimal semen cryoprotective method for BMI was 2% or 3% glycerol as cryoprotectant, using thawing solution Ⅰ to thaw at 40℃ 6 s or 50℃ 6 s.     

Hypoglycemic effect of lupin seed γ-conglutin in experimental animals and healthy human subjects

A lupin seed γ-conglutin-enriched preparation was tested in a glucose overload trial with both murine models and adult healthy volunteers. The results with rats showed a dose-dependent significant decrease of blood glucose concentration, which confirmed previous findings obtained with the purified protein. Moreover, three test-product doses equivalent to 630, 315, and 157.5 mg γ-conglutin, orally administered 30 min before the carbohydrate supply, showed a relevant hypoglycemic effect in human trials. Insulin concentrations were not significantly affected. The general hematic parameters did not change at all.This is the first report on the glucose-lowering effect of lupin γ-conglutin in human subjects.     

糖尿病前期中医体质及相关指标的研究

目的探讨糖尿病前期(IGR)中医体质及与相关指标的关系。方法用前瞻性研究方法,采集517例IGR患者信息,进行中医体质辨识和相关指标的分析。结果①517例IGR人群中,单一体质类型者、二种体质类型相兼者、三种体质类型相兼者分别占25.8%、66.5%、7.7%;前3位的体质类型分别是痰湿兼湿热质、痰湿兼气虚质、湿热质,共占64.8%。②痰湿兼湿热质、痰湿兼气虚质、湿热质体质量指数(BMI)、腰臀比(WHR)、血脂TC、TG、LDL-C显著高于其他体质组,差异有统计学意义(P<0.01)。结论①IGR人群体质可表现为单一体质,也可表现为复合型体质,其中以痰湿兼湿热质、痰湿兼气虚质、湿热质为主,提示痰湿和湿热是IGR人群的重要因素。②BMI、WHR、血脂TC、TG、LDL-C是IGR痰湿和湿热体质的辨识和疗效判断的参考指标。     

版纳微型猪近交系性别决定基因（SRY）原核表达载体的构建及蛋白高效表达

 为了构建版纳微型猪近交系SRY的原核表达载体pET 32a(+) SRY,并通过诱导使其在大肠杆菌中获得高效表达,研究采用添加限制性内切酶位点的引物特异性扩增SRY,连入pMD19 T simple载体,转化入大肠杆菌DH5α,克隆后提取pMD19 T SRY阳性重组质粒,使用相同的内切酶同时对pMD19 T SRY质粒和原核表达pET 32a（+）载体进行酶切,连接后使SRY定向克隆到pET 32a(+)表达载体中。经PCR、酶切和测序鉴定后,重组质粒转化大肠杆菌感受态DH5α,提取质粒后再次转化大肠杆菌Rosetta（DE3）,用不同浓度的异丙基硫代半乳糖苷（IPTG）诱导表达,并通过15% SDS PAGE鉴定。结果显示,不同浓度IPTG诱导的SRY均在大肠杆菌中进行了高效特异性融合表达。     

猪类无精症缺失基因DAZL的cDNA全长克隆、组织表达和亚细胞定位

旨在获得猪类无精症缺失基因DAZL cDNA全长序列,阐明该基因的序列、mRNA组织表达模式、蛋白质结构特征及亚细胞定位情况。本研究以版纳微型猪近交系（Banna mini-pig inbred line,BMI）10月龄成年公猪为研究对象,屠宰收集组织样,利用RACE和RT-PCR技术获得DAZL基因cDNA全长序列;使用实时荧光定量PCR （qPCR）技术检测其mRNA多组织表达谱;在线分析蛋白质的结构特点和保守结构域;用体外细胞转染技术鉴定其在ST猪睾丸细胞中的定位。结果表明,BMI DAZL cDNA全长2 985 bp （KU705632）,包含888 bp的CDS区,编码295个氨基酸（AOC89050）;该基因位于猪13号染色体,含11个外显子。qPCR结果显示,DAZL mRNA在睾丸中特异高表达。生物信息学分析表明,猪DAZL蛋白含有哺乳动物RMP和DAZ同源区,无规则卷曲在二级结构中超过50%。进化分析表明,BMI DAZL氨基酸序列高度保守,与牛科的亲缘关系最为接近。pEGFP-C1-DAZL转染ST细胞后的荧光共定位结果显示,DAZL蛋白主要分布在细胞核中。本研究分别从DNA、mRNA和蛋白质层面阐明了BMI DAZL基因的序列特征、表达、蛋白质结构和定位,为进一步研究DAZL在BMI精子发生方面的功能奠定基础。     

版纳微型猪近交系白细胞介素6基因克隆、生物信息学及组织表达分析

白细胞介素6(IL-6)是机体重要的免疫调节因子,在佐剂的应用方面具有很好的发展前景。本研究以版纳微型猪近交系(BMI)为实验动物,通过PCR法获得IL-6基因编码区序列,提交GenBank数据库,登录号为JQ839263。对BMI IL-6基因和相应的蛋白序列进行了生物信息学分析,结果显示该基因编码212个氨基酸,分子质量为23.88 ku,等电点(pI)为6.66,存在一个保守结构域,一个跨膜结构,N端和C端均疏水,且在N端存在信号肽,有89%的可能性定位于细胞核。将BMI的IL-6基因编码区序列与NCBI下载到的4条猪IL-6基因序列进行比对,结果显示BMI IL-6与GenBank登录号为NM_214399和DQ832259的核苷酸序列完全相同,与GenBank登录号为AF309651和AF518322的核苷酸序列各存在1处碱基差异;多物种氨基酸序列比对及系统进化分析结果表明,BMI与骆驼亲缘关系最近。同时利用半定量PCR法确定了IL-6基因mRNA在BMI 12个组织中的表达量,结果发现在肺脏、皮肤、肌肉中表达量较高。本研究为进一步研究猪IL-6基因的表达调控奠定了理论基础。     

版纳微型猪近交系RNF4基因克隆、多组织qPCR表达及功能生物信息学分析

RNF4基因调节精细胞分化和增殖过程,文章以Gen Bank下载的猪及近缘物种RNF4 mRNA序列为参考序列,设计特异引物扩增版纳微型猪近交系(BMI)RNF4基因。应用qPCR分析15个重要组织mRNA表达谱,并对蛋白质序列作功能生物信息学分析,构建多物种系统进化树。研究获得BMI RNF4 573 bp编码区序列(Gen Bank登录号:KU705638,对应氨基酸登录号:AOC89056),编码190个氨基酸,蛋白质分子质量(Mw)为21.43 ku,等电点(pI)为6.95。多组织荧光定量表达分析表明RNF4基因在尿道球腺、睾丸、肝、肺中高水平表达;在其他11个组织中呈中低水平表达。功能生物信息学分析表明RNF4蛋白质存在1个保守结构域,无跨膜结构,无信号肽序列;N末端疏水,C末端疏水;有4类功能活性位点,位于细胞核概率为94.1%。系统进化分析表明,BMI与狗亲缘关系最近。结果为研究RNF4基因在猪精细胞分化和增殖方面作用奠定基础。     

版纳微型猪近交系TSARG7基因克隆及功能生物信息学分析

为获得版纳微型猪近交系（Banna Mini-pig inbred line,BMI）TSATG7基因序列并分析组织表达情况,本研究以GenBank中猪及近缘物种的TSARG7基因mRNA序列为参考序列,设计特异引物扩增BMI TSARG7基因,半定量分析10个重要组织的表达谱,并对蛋白质序列进行功能生物信息学分析。结果显示,获得了BMI TSARG7基因1 371 bp的编码区序列（GenBank登录号：KU950831,对应的氨基酸登录号：AMY60405）,编码456个氨基酸,蛋白质分子质量为52.05 ku,等电点（pI）为9.28。多组织表达分析表明,TSARG7基因在睾丸中高表达,在其他组织中呈中、低表达。功能生物信息学分析表明,TSARG7蛋白质存在1个保守结构域,有3个跨膜螺旋结构,无信号肽序列;N末端疏水,C末端亲水;有5类功能活性位点,位于细胞质的概率是94.1%。本试验结果为进一步研究TSARG7基因在猪精子发生和性成熟方面的作用及功能奠定基础。     

Do Improvements of living standards lead to growth of obesity? Evidence from Chinese adults

This study estimates the impacts of income on body mass indices(BMIs) of male and female adults from both urban and rural areas in China under the neoclassic theory of obesity, using China Health and Nutrition Survey data during 1991–2011.Results of this study show that incomes has a significant inverted U-shaped impact on weight for both urban and rural males while having a negative effect on weight for urban females and positive effect on BMI for rural female, suggesting that further income growth is expected to lead to continuing growth of obesity for both urban and rural male adults as well as for rural female adults. Moreover, the strenuousness of physical activity, which is represented by types of jobs, significantly reduced the BMI for all adults except for urban females, implying that a decrease in the strenuousness of physical activity stemming from economic development and technological changes is an important factor leading to the growth of obesity for all adults and rural female adults.     

Cloning and Functional Bioinformatics Analysis of TSARG7 Gene in Banna Mini-pig Inbred Line

In order to obtain TSATG7 gene sequence and analyze mRNA expression in tissue of Banna Mini-pig inbred line (BMI), we used TSARG7 gene mRNA sequence of pig and related species from GenBank as reference sequences to design specific primers and amplify BMI TSARG7 gene. The semi-quantitative was used to analyze the expression of TSARG7 gene in 10 important tissues, protein sequence was used to carry out functional bioinformatics analysis. A coding sequence of 1 371 bp (GenBank accession No.: KU950831, the corresponding amino acid sequence accession No.: AMY60405) of BMI TSARG7 was obtained, which encoded a protein of 456 amino acids, the protein molecular weight was 52.05 ku, and the isoelectric point was 9.28. Multiple tissue expression indicated that TSARG7 gene expressed highly in the testis, middle and low expression in the other tissues. Functional bioinformatics analysis indicated that TSARG7 protein contained one conserved domain, three transmembrane regions, and no signal peptide sequences;Its N-terminal was hydrophobic and C-terminal was hydrophilic;It had five kinds functional active sites and a 94.1% to located in cytoplasmic. The results of the study would lay a foundation for further study of the gene about its functions in pig spermatogenesis and sexual maturation.