设计6对引物,采用PCR-SSCP技术检测促黄体素β基因(LHβ)5′调控区和外显子在高繁殖力绵羊品种(湖羊)和低繁殖力绵羊品种(陶赛特、特克赛尔和哈萨克)中的单核苷酸多态性(SNPs),并探讨该基因与湖羊繁殖力的关系。结果显示,在5′调控区发...设计6对引物,采用PCR-SSCP技术检测促黄体素β基因(LHβ)5′调控区和外显子在高繁殖力绵羊品种(湖羊)和低繁殖力绵羊品种(陶赛特、特克赛尔和哈萨克)中的单核苷酸多态性(SNPs),并探讨该基因与湖羊繁殖力的关系。结果显示,在5′调控区发现4个多态性位点(286 bp T→C、424 bp A→G、439 bp T→C、705 bp G→A),在第2外显子区发现2个多态性位点(1 042 bp C→G、1 136 bp C→T),在第3外显子区内没有任何SNPs位点。研究初步表明,湖羊LHβ基因AB型的平均产羔数比AA型多0.45只(P<0.05),GJ型的平均产羔数比GG型多1.83只(P<0.05),EE型平均产羔数比EF型多0.03只,但差异不显著(P>0.05);AB基因型初生重最小二乘均值比AA基因型多0.56 kg(P<0.05),体高最小二乘均值比AA基因型多2.12 cm(P<0.05);其他基因型的初生性状之间差异均不显著(P>0.05)。展开更多
目的:报道2例家族性男性性早熟(familial male-limited precious puberty,FMPP)患者的临床特征、基因检测结果及治疗结果。方法:对2例FMPP患者进行详细的病史采集及体格检查,行促性腺激素释放激素(gonadotropinreleasing hormone, GnRH...目的:报道2例家族性男性性早熟(familial male-limited precious puberty,FMPP)患者的临床特征、基因检测结果及治疗结果。方法:对2例FMPP患者进行详细的病史采集及体格检查,行促性腺激素释放激素(gonadotropinreleasing hormone, GnRH)激发试验、性激素、肾上腺皮质激素等检测以及相关影像学检查,同时采集相关家系成员的外周血进行基因检测,并在中文数据库及PubMed数据库中检索相关文献,进行综合探讨。结果:2例患者的初诊年龄分别为6岁1个月龄(病例1)和3岁7个月龄(病例2),均表现为阴茎、睾丸增大、生长加速、骨龄超前,病例2伴有攻击行为。实验室检查提示,2例患者的黄体生成素峰值分别为7.28 mIU/mL和4.96 mIU/mL,基础睾酮水平升高达2.49 ng/mL和3.58 ng/mL,而影像学检查未见异常。根据2例患者的病史及各项检查结果,临床诊断为中枢性性早熟。经基因检测显示,2例患儿的黄体生成素/人绒毛膜促性腺激素受体(luteinizing hormone/choriogonadotropin receptor,LHCGR)基因上均存在杂合变异[病例1存在c.1756TCTdel(p.Ser586del)变异来自其父亲;病例2存在c.1723A>C(p.Ile575Leu)变异,来自其母亲],根据美国医学遗传学与基因组学学会(The American College of Medical Genetics and Genomics, ACMG)指南评定为可能的致病性变异,故明确2例患儿均为继发于LHCGR基因突变的中枢性性早熟。检索数据库,分析35例FMPP资料完整的患者,中位发病时间在4岁,加入例1的变异,计18种基因变异被报道。结论:本文报道2例罕见FMPP病例,均为LHCGR基因突变导致,其中病例1的突变类型为国内外首次报道,病例2的突变类型已有报道。临床对于年龄小、起病或治疗效果欠佳的中枢性性早熟男童,需进一步明确有无LHCGR基因突变。展开更多
Using foxtail millet (Setaria italica (L.) Beauv.) male-sterile line 1066A as female parent and Yugu 1 primary trisomic series (1 - 7) and tetrasomics 8, 9 as male parents, chromosome location of gene for male-sterili...Using foxtail millet (Setaria italica (L.) Beauv.) male-sterile line 1066A as female parent and Yugu 1 primary trisomic series (1 - 7) and tetrasomics 8, 9 as male parents, chromosome location of gene for male-sterility and yellow seedling in line 1066A was studied by primary trisomic analysis. The plants of F-1 generation of trisomics 2 - 9 were obtained by crossing with a great many plants of 1066A. F-1 generation of trisomics was similar to their male parent in morphologic characters, the color of their seedling was green, and pollen was partially fertile. The segregation ratio of fertility to sterility is 3:1 in F-2 generation of trisomics 2, 3, 4, 5, 7, 8 and 9; and 14:1 only in F-2 generation of trisomic 6 (chi(0.05)(2) = 0.012). The segregation ratio of green seedling to yellow seedling is 12:1 only in F-2 generation of trisomic 7 (chi(0.05)(2) = 0.31), but in other cases, this ratio is 3:1. The results indicated that the male-sterility gene was located on chromosome 6, and the gene for yellow seedling was monogenic recessive and located on chromosome 7. The rate of trisomics transmission by pollen was tested, trisomics 8 and 9 were the highest in rates of trisomics transmission and followed by trisomics 6 and 4.展开更多
[Objective] The paper aimed to analyze the polymorphism of the growth hormone receptor （GHR） in improved hybrid yellow cattle group from Liupan Mountain area in Ningxia Autonomous Region,so as to provide technologic...[Objective] The paper aimed to analyze the polymorphism of the growth hormone receptor （GHR） in improved hybrid yellow cattle group from Liupan Mountain area in Ningxia Autonomous Region,so as to provide technological basis for hybrid improvement. [Method] Polymerase chain reaction-restriction fragment length polymorphisms （PCR-RFLP） technology was carried out to examine polymorphisms of GHR gene of 70 individuals. [Result] The target fragment of 338 bp was amplified. The PCR product digested by restriction enzyme Alu I showed polymorphisms. The frequencies of the two genotypes （AA,BB） were 75.71% （53 individuals） and 24.29% （17 individuals）,respectively. [Conclusion] Two genotypes of GHR gene were detected in improved hybrid yellow cattle groups from Liupan Mountain area in Ningxia.展开更多
The yellow meal worm （Tenebrio molitor L.） is an important resource insect typically used as animal feed additive. It is also widely used for biological research. The first complete mitochondrial genome of T. rnolit...The yellow meal worm （Tenebrio molitor L.） is an important resource insect typically used as animal feed additive. It is also widely used for biological research. The first complete mitochondrial genome of T. rnolitor was determined for the first time by long PCR and conserved primer walking approaches. The results showed that the entire mitogenome of T. molitor was 15 785 bp long, with 72.35% A＋T content [deposited in GenBank with accession number KF418153]. The gene order and orientation were the same as the most common type suggested as ancestral for insects. Two protein-coding genes used atypical start codons （CTA in ND2 and AAT in COX1）, and the remaining 11 protein-coding genes started with a typical insect initiation codon ATN. All tRNAs showed standard clover-leaf structure, except for tRNASer （AGN）, which lacked a dihydrouridine （DHU） arm. The newly added T. molitor mitogenome could provide information for future studies on yellow meal worm.展开更多
AIM:To investigate the effects of curcumin on the expression of peroxisome proliferator-activated receptorδ(PPARδ)and related genes in HT-29 cells. METHODS:HT-29 cells were treated with curcumin (0-80μmol/L)for 24 ...AIM:To investigate the effects of curcumin on the expression of peroxisome proliferator-activated receptorδ(PPARδ)and related genes in HT-29 cells. METHODS:HT-29 cells were treated with curcumin (0-80μmol/L)for 24 h.The effects of curcumin on the morphology of HT-29 cells were studied by Hoechst 33342 staining.The activity of caspase-3 was determined using DEVD-p NA as substrate.The levels of peroxisome PPARδ,14-3-3εand vascular endothelial growth factor(VEGF)in HT-29 cells were determined by Western blotting analysis and their mRNA expression was determined by real-time quantitative RT-PCR. RESULTS:Treatment with 10-80μmol/L curcumin induced typical features of apoptosis and activated the caspase-3 in HT-29 cells.The expression of PPARδ, 14-3-3εand VEGF was reduced and the activity of β-catenin/Tcf-4 signaling was inhibited by curcumin treatment. CONCLUSION:Curcumin can induce apoptosis of HT-29 cells and down-regulate the expression of PPARδ,14-3-3εand VEGF in HT-29.展开更多
文摘设计6对引物,采用PCR-SSCP技术检测促黄体素β基因(LHβ)5′调控区和外显子在高繁殖力绵羊品种(湖羊)和低繁殖力绵羊品种(陶赛特、特克赛尔和哈萨克)中的单核苷酸多态性(SNPs),并探讨该基因与湖羊繁殖力的关系。结果显示,在5′调控区发现4个多态性位点(286 bp T→C、424 bp A→G、439 bp T→C、705 bp G→A),在第2外显子区发现2个多态性位点(1 042 bp C→G、1 136 bp C→T),在第3外显子区内没有任何SNPs位点。研究初步表明,湖羊LHβ基因AB型的平均产羔数比AA型多0.45只(P<0.05),GJ型的平均产羔数比GG型多1.83只(P<0.05),EE型平均产羔数比EF型多0.03只,但差异不显著(P>0.05);AB基因型初生重最小二乘均值比AA基因型多0.56 kg(P<0.05),体高最小二乘均值比AA基因型多2.12 cm(P<0.05);其他基因型的初生性状之间差异均不显著(P>0.05)。
文摘目的:报道2例家族性男性性早熟(familial male-limited precious puberty,FMPP)患者的临床特征、基因检测结果及治疗结果。方法:对2例FMPP患者进行详细的病史采集及体格检查,行促性腺激素释放激素(gonadotropinreleasing hormone, GnRH)激发试验、性激素、肾上腺皮质激素等检测以及相关影像学检查,同时采集相关家系成员的外周血进行基因检测,并在中文数据库及PubMed数据库中检索相关文献,进行综合探讨。结果:2例患者的初诊年龄分别为6岁1个月龄(病例1)和3岁7个月龄(病例2),均表现为阴茎、睾丸增大、生长加速、骨龄超前,病例2伴有攻击行为。实验室检查提示,2例患者的黄体生成素峰值分别为7.28 mIU/mL和4.96 mIU/mL,基础睾酮水平升高达2.49 ng/mL和3.58 ng/mL,而影像学检查未见异常。根据2例患者的病史及各项检查结果,临床诊断为中枢性性早熟。经基因检测显示,2例患儿的黄体生成素/人绒毛膜促性腺激素受体(luteinizing hormone/choriogonadotropin receptor,LHCGR)基因上均存在杂合变异[病例1存在c.1756TCTdel(p.Ser586del)变异来自其父亲;病例2存在c.1723A>C(p.Ile575Leu)变异,来自其母亲],根据美国医学遗传学与基因组学学会(The American College of Medical Genetics and Genomics, ACMG)指南评定为可能的致病性变异,故明确2例患儿均为继发于LHCGR基因突变的中枢性性早熟。检索数据库,分析35例FMPP资料完整的患者,中位发病时间在4岁,加入例1的变异,计18种基因变异被报道。结论:本文报道2例罕见FMPP病例,均为LHCGR基因突变导致,其中病例1的突变类型为国内外首次报道,病例2的突变类型已有报道。临床对于年龄小、起病或治疗效果欠佳的中枢性性早熟男童,需进一步明确有无LHCGR基因突变。
文摘Using foxtail millet (Setaria italica (L.) Beauv.) male-sterile line 1066A as female parent and Yugu 1 primary trisomic series (1 - 7) and tetrasomics 8, 9 as male parents, chromosome location of gene for male-sterility and yellow seedling in line 1066A was studied by primary trisomic analysis. The plants of F-1 generation of trisomics 2 - 9 were obtained by crossing with a great many plants of 1066A. F-1 generation of trisomics was similar to their male parent in morphologic characters, the color of their seedling was green, and pollen was partially fertile. The segregation ratio of fertility to sterility is 3:1 in F-2 generation of trisomics 2, 3, 4, 5, 7, 8 and 9; and 14:1 only in F-2 generation of trisomic 6 (chi(0.05)(2) = 0.012). The segregation ratio of green seedling to yellow seedling is 12:1 only in F-2 generation of trisomic 7 (chi(0.05)(2) = 0.31), but in other cases, this ratio is 3:1. The results indicated that the male-sterility gene was located on chromosome 6, and the gene for yellow seedling was monogenic recessive and located on chromosome 7. The rate of trisomics transmission by pollen was tested, trisomics 8 and 9 were the highest in rates of trisomics transmission and followed by trisomics 6 and 4.
基金Supported by Ningxia Science and Technology Program(5183003)Action Project for Scientific and Technological Personal to Service Enterprise (2009GJG30036)~~
文摘[Objective] The paper aimed to analyze the polymorphism of the growth hormone receptor （GHR） in improved hybrid yellow cattle group from Liupan Mountain area in Ningxia Autonomous Region,so as to provide technological basis for hybrid improvement. [Method] Polymerase chain reaction-restriction fragment length polymorphisms （PCR-RFLP） technology was carried out to examine polymorphisms of GHR gene of 70 individuals. [Result] The target fragment of 338 bp was amplified. The PCR product digested by restriction enzyme Alu I showed polymorphisms. The frequencies of the two genotypes （AA,BB） were 75.71% （53 individuals） and 24.29% （17 individuals）,respectively. [Conclusion] Two genotypes of GHR gene were detected in improved hybrid yellow cattle groups from Liupan Mountain area in Ningxia.
基金This work was supported by grant from the Science and Technology Committee of Yunnan Province （2011 FB141 ） We thank Dr. Zhong-Bao ZHAO for helpful suggestions during manuscript preparation.
文摘The yellow meal worm （Tenebrio molitor L.） is an important resource insect typically used as animal feed additive. It is also widely used for biological research. The first complete mitochondrial genome of T. rnolitor was determined for the first time by long PCR and conserved primer walking approaches. The results showed that the entire mitogenome of T. molitor was 15 785 bp long, with 72.35% A＋T content [deposited in GenBank with accession number KF418153]. The gene order and orientation were the same as the most common type suggested as ancestral for insects. Two protein-coding genes used atypical start codons （CTA in ND2 and AAT in COX1）, and the remaining 11 protein-coding genes started with a typical insect initiation codon ATN. All tRNAs showed standard clover-leaf structure, except for tRNASer （AGN）, which lacked a dihydrouridine （DHU） arm. The newly added T. molitor mitogenome could provide information for future studies on yellow meal worm.
文摘AIM:To investigate the effects of curcumin on the expression of peroxisome proliferator-activated receptorδ(PPARδ)and related genes in HT-29 cells. METHODS:HT-29 cells were treated with curcumin (0-80μmol/L)for 24 h.The effects of curcumin on the morphology of HT-29 cells were studied by Hoechst 33342 staining.The activity of caspase-3 was determined using DEVD-p NA as substrate.The levels of peroxisome PPARδ,14-3-3εand vascular endothelial growth factor(VEGF)in HT-29 cells were determined by Western blotting analysis and their mRNA expression was determined by real-time quantitative RT-PCR. RESULTS:Treatment with 10-80μmol/L curcumin induced typical features of apoptosis and activated the caspase-3 in HT-29 cells.The expression of PPARδ, 14-3-3εand VEGF was reduced and the activity of β-catenin/Tcf-4 signaling was inhibited by curcumin treatment. CONCLUSION:Curcumin can induce apoptosis of HT-29 cells and down-regulate the expression of PPARδ,14-3-3εand VEGF in HT-29.
