维生素D受体(vitam in D receptor,VDR)是一种核转录因子,通过与配体特异结合,调控多种基因的表达,从而调节多种生命活动的进行。本文总结了近年来VDR的研究进展,主要包括VDR的作用机制、VDR行使功能所需共激活子及共抑制子、VDR在生长...维生素D受体(vitam in D receptor,VDR)是一种核转录因子,通过与配体特异结合,调控多种基因的表达,从而调节多种生命活动的进行。本文总结了近年来VDR的研究进展,主要包括VDR的作用机制、VDR行使功能所需共激活子及共抑制子、VDR在生长分化、免疫调节和抑制肿瘤等方面的作用及VDR配体类似物在药物开发研究领域的最新进展。展开更多
目的 分析维生素D受体基因多态性与肺结核易感性的病例对照研究的结果。方法应用Meta—analysis，以Fleiss模型和DerSimonian and Nan Laird模型（D—L模型）对6项研究结果进行数据处理。结果累计病例841例，对照1419例，采用Fleiss模...目的 分析维生素D受体基因多态性与肺结核易感性的病例对照研究的结果。方法应用Meta—analysis，以Fleiss模型和DerSimonian and Nan Laird模型（D—L模型）对6项研究结果进行数据处理。结果累计病例841例，对照1419例，采用Fleiss模型计算的合并OR值ff vs FF为1．20（0．84-1．71），Ff vs FF为0．99（0．81～1.21），D—L模型计算的合并OR值ff vs FF为1．12（0．67-1．86），Ff vs FF为0．99（0．80-1.23）。失效安全数小于1。结论尚不能认为维生素D受体基因多态性是肺结核易感性的影响因素。展开更多
Humans have coevolved with their microbes over thousands of years,but this relationship,is now being dramatically affected by shifts in the collective human microbiome resulting from changes in the environment and soc...Humans have coevolved with their microbes over thousands of years,but this relationship,is now being dramatically affected by shifts in the collective human microbiome resulting from changes in the environment and societal norms.Resulting perturbations of intestinal host-microbe interactions can lead to miscues and altered host responses that increase the risk of pathogenic processes and promote“western”disorders such as inflammatory bowel diseases,cancers,obesity,diabetes,autism,and asthma.Given the current challenges and limitations in gene therapy,approaches that can reshape the gut microbiome represent a reasonable strategy for restoring the balance between host and microbes.In this review and commentary,we highlight recent progress in our understanding of the intestinal microbiome in the context of health and diseases,focusing on mechanistic concepts that underlie the complex relationships between host and microbes.Despite these gains,many challenges lie ahead that make it difficult to close the gap between the basic sciences and clinical application.We will discuss the potential therapeutic strategies that can be used to manipulate the gut microbiota,recognizing that the promise of pharmabiotics(“bugs to drugs”)is unlikely to be completely fulfilled without a greater understanding of enteric microbiota and its impact on mammalian physiology.By leveraging the knowledge gained through these studies,we will be prepared to enter the era of personalized medicine where clinical inventions can be custom-tailored to individual patients to achieve better outcomes.展开更多
目的探讨维生素D受体(vitamin D receptor,VDR)基因ApaI酶切位点多态性与2型糖尿病及血清1,25-二羟基维生素D3[1,25(OH)2D3]的相关性。方法采用聚合酶链反应限制性片段长度多态性(PCR-RFLP)技术,检测105例2型糖尿病患者和105例正常者的...目的探讨维生素D受体(vitamin D receptor,VDR)基因ApaI酶切位点多态性与2型糖尿病及血清1,25-二羟基维生素D3[1,25(OH)2D3]的相关性。方法采用聚合酶链反应限制性片段长度多态性(PCR-RFLP)技术,检测105例2型糖尿病患者和105例正常者的VDR基因型,用酶联免疫吸附(Elisa)法测定血清1,25(OH)2D3水平,并检测相关临床及生化指标,比较VDR基因型和等位基因频率的分布差异及不同基因型血清1,25(OH)2D3等相关指标的差异。结果维生素D受体基因ApaⅠ位点基因型和等位基因频率在两组中的分布差异明显(P<0.01)。糖尿病组等位基因a和基因型aa频率明显高于对照组。基因型AA组及Aa组血清1,25(OH)2D3高于基因型aa组,而收缩压、舒张压及空腹血糖低于基因型aa组,且差别有显著性意义(P<0.05或0.01)。结论 Apa I位点的VDR基因多态性与2型糖尿病存在相关性。血清1,25(OH)2D3水平、空腹血糖及血压与VDR基因多态性密切相关。展开更多
文摘维生素D受体(vitam in D receptor,VDR)是一种核转录因子,通过与配体特异结合,调控多种基因的表达,从而调节多种生命活动的进行。本文总结了近年来VDR的研究进展,主要包括VDR的作用机制、VDR行使功能所需共激活子及共抑制子、VDR在生长分化、免疫调节和抑制肿瘤等方面的作用及VDR配体类似物在药物开发研究领域的最新进展。
文摘目的 分析维生素D受体基因多态性与肺结核易感性的病例对照研究的结果。方法应用Meta—analysis，以Fleiss模型和DerSimonian and Nan Laird模型（D—L模型）对6项研究结果进行数据处理。结果累计病例841例，对照1419例，采用Fleiss模型计算的合并OR值ff vs FF为1．20（0．84-1．71），Ff vs FF为0．99（0．81～1.21），D—L模型计算的合并OR值ff vs FF为1．12（0．67-1．86），Ff vs FF为0．99（0．80-1.23）。失效安全数小于1。结论尚不能认为维生素D受体基因多态性是肺结核易感性的影响因素。
基金supported by the Swim Across America Research Award to Jun Sun and NIDDK DK42086(DDRCC),DK097268,and DK47722 to Eugene B Chang.
文摘Humans have coevolved with their microbes over thousands of years,but this relationship,is now being dramatically affected by shifts in the collective human microbiome resulting from changes in the environment and societal norms.Resulting perturbations of intestinal host-microbe interactions can lead to miscues and altered host responses that increase the risk of pathogenic processes and promote“western”disorders such as inflammatory bowel diseases,cancers,obesity,diabetes,autism,and asthma.Given the current challenges and limitations in gene therapy,approaches that can reshape the gut microbiome represent a reasonable strategy for restoring the balance between host and microbes.In this review and commentary,we highlight recent progress in our understanding of the intestinal microbiome in the context of health and diseases,focusing on mechanistic concepts that underlie the complex relationships between host and microbes.Despite these gains,many challenges lie ahead that make it difficult to close the gap between the basic sciences and clinical application.We will discuss the potential therapeutic strategies that can be used to manipulate the gut microbiota,recognizing that the promise of pharmabiotics(“bugs to drugs”)is unlikely to be completely fulfilled without a greater understanding of enteric microbiota and its impact on mammalian physiology.By leveraging the knowledge gained through these studies,we will be prepared to enter the era of personalized medicine where clinical inventions can be custom-tailored to individual patients to achieve better outcomes.
文摘目的探讨维生素D受体(vitamin D receptor,VDR)基因ApaI酶切位点多态性与2型糖尿病及血清1,25-二羟基维生素D3[1,25(OH)2D3]的相关性。方法采用聚合酶链反应限制性片段长度多态性(PCR-RFLP)技术,检测105例2型糖尿病患者和105例正常者的VDR基因型,用酶联免疫吸附(Elisa)法测定血清1,25(OH)2D3水平,并检测相关临床及生化指标,比较VDR基因型和等位基因频率的分布差异及不同基因型血清1,25(OH)2D3等相关指标的差异。结果维生素D受体基因ApaⅠ位点基因型和等位基因频率在两组中的分布差异明显(P<0.01)。糖尿病组等位基因a和基因型aa频率明显高于对照组。基因型AA组及Aa组血清1,25(OH)2D3高于基因型aa组,而收缩压、舒张压及空腹血糖低于基因型aa组,且差别有显著性意义(P<0.05或0.01)。结论 Apa I位点的VDR基因多态性与2型糖尿病存在相关性。血清1,25(OH)2D3水平、空腹血糖及血压与VDR基因多态性密切相关。
