目的:观察中药复方更年健对老年雌性大鼠下丘脑、垂体和卵巢雌激受体(ER)和 ER mRNA 的影响。方法:建立自然衰老的雌性大鼠模型,用放射配体结合分析法检测 ER,用 Norther blot 分析 ER mRNA 的改变。结果:雌性大鼠性减退期下丘脑,垂体...目的:观察中药复方更年健对老年雌性大鼠下丘脑、垂体和卵巢雌激受体(ER)和 ER mRNA 的影响。方法:建立自然衰老的雌性大鼠模型,用放射配体结合分析法检测 ER,用 Norther blot 分析 ER mRNA 的改变。结果:雌性大鼠性减退期下丘脑,垂体和卵巢ER 和 ER mRNA 水平随血清雌二醇(E_2)水平的下降较性成熟期显著下降,而更年健则使下降了的 ER 和 ER mRNA 水平明显提高。结论:本结果提示更年健在临床上治疗更年期综合征的机理可能是在不改变 E_2水平的情况下,提高下丘脑、垂体和卵巢 ER 和 ER mRNA 水平,从而增强雌激素的生物学效应,改善临床症状和体征。展开更多
BACKGROUND Crohn’s disease (CD) is a complex disorder resulting from the interaction of genetic,environmental,and microbial factors.The pathogenic process may potentially affect any segment of the gastrointestinal tr...BACKGROUND Crohn’s disease (CD) is a complex disorder resulting from the interaction of genetic,environmental,and microbial factors.The pathogenic process may potentially affect any segment of the gastrointestinal tract,but a selective location in the terminal ileum was reported in 50% of patients.AIM To characterize clinical sub-phenotypes (colonic and/or ileal) within the same disease,in order to identify new therapeutic targets.METHODS 14 consecutive patients undergoing surgery for ileal CD were recruited for this study.Peripheral blood samples from each patient were collected and the main polymorphisms of the gene Card15/Nod2 (R702W,G908R,and 1007fs) were analyzed in each sample.In addition,tissue samples were taken from both the tract affected by CD and from the apparently healthy and disease-free margins (internal controls).We used a multiplex gene assay in specimens obtained from patients with ileal localization of CD to evaluate the simultaneous expression of 24 genes involved in the pathogenesis of the disease.We also processed surgery gut samples with routine light microscopy (LM) and transmission electron microscopy (TEM) techniques to evaluate their structural and ultrastructural features.RESULTS We found a significant increase of Th17 (IL17A and IL17F,IL 23R and CCR6) and Th1 (IFN-γ) gene expression in inflamed mucosa compared to non-inflamed sites of 14 CD patients.DEFB4 and HAMP,two genes coding for antimicrobial peptides,were also strongly activated in inflamed ileal mucosa,suggesting the overwhelming stimulation of epithelial cells by commensal microbiota.IFN-γ and CCR6 were more expressed in inflamed mucosa of CD patients with ileal localization compared with patients with colonic localization suggesting a more aggressive inflammation process in this site.Morphological analysis of the epithelial lining of Lieberkün crypts disclosed enhanced release activity from goblet mucocytes,whereas the lamina propria contained numerous cells pertaining to various lines.CONCLUSION We observed that the e展开更多
文摘目的:观察中药复方更年健对老年雌性大鼠下丘脑、垂体和卵巢雌激受体(ER)和 ER mRNA 的影响。方法:建立自然衰老的雌性大鼠模型,用放射配体结合分析法检测 ER,用 Norther blot 分析 ER mRNA 的改变。结果:雌性大鼠性减退期下丘脑,垂体和卵巢ER 和 ER mRNA 水平随血清雌二醇(E_2)水平的下降较性成熟期显著下降,而更年健则使下降了的 ER 和 ER mRNA 水平明显提高。结论:本结果提示更年健在临床上治疗更年期综合征的机理可能是在不改变 E_2水平的情况下,提高下丘脑、垂体和卵巢 ER 和 ER mRNA 水平,从而增强雌激素的生物学效应,改善临床症状和体征。
基金Supported by MIUR-Ministry of Education,University and Research,No.2008X8NRH4_003Fondazione Cassa di Risparmio di Firenze,No.2008.1581,2009.1301
文摘BACKGROUND Crohn’s disease (CD) is a complex disorder resulting from the interaction of genetic,environmental,and microbial factors.The pathogenic process may potentially affect any segment of the gastrointestinal tract,but a selective location in the terminal ileum was reported in 50% of patients.AIM To characterize clinical sub-phenotypes (colonic and/or ileal) within the same disease,in order to identify new therapeutic targets.METHODS 14 consecutive patients undergoing surgery for ileal CD were recruited for this study.Peripheral blood samples from each patient were collected and the main polymorphisms of the gene Card15/Nod2 (R702W,G908R,and 1007fs) were analyzed in each sample.In addition,tissue samples were taken from both the tract affected by CD and from the apparently healthy and disease-free margins (internal controls).We used a multiplex gene assay in specimens obtained from patients with ileal localization of CD to evaluate the simultaneous expression of 24 genes involved in the pathogenesis of the disease.We also processed surgery gut samples with routine light microscopy (LM) and transmission electron microscopy (TEM) techniques to evaluate their structural and ultrastructural features.RESULTS We found a significant increase of Th17 (IL17A and IL17F,IL 23R and CCR6) and Th1 (IFN-γ) gene expression in inflamed mucosa compared to non-inflamed sites of 14 CD patients.DEFB4 and HAMP,two genes coding for antimicrobial peptides,were also strongly activated in inflamed ileal mucosa,suggesting the overwhelming stimulation of epithelial cells by commensal microbiota.IFN-γ and CCR6 were more expressed in inflamed mucosa of CD patients with ileal localization compared with patients with colonic localization suggesting a more aggressive inflammation process in this site.Morphological analysis of the epithelial lining of Lieberkün crypts disclosed enhanced release activity from goblet mucocytes,whereas the lamina propria contained numerous cells pertaining to various lines.CONCLUSION We observed that the e
