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类别: 凝胶闪耀
彭刚; 溶胶-凝胶(Sol-gel)工艺新应用 ; 佛山陶瓷 ; 1995年04期 ; 26
类别: 硅凝胶中等电压
JUJU维他命C晶澈美白凝胶VC凝胶美白补水超赞0.8g试用装
类别: 凝胶美白
0.05);与正常对照组相比血清中睾酮和LH含量降低(P<0.05)。 结论:成年期2型糖尿病可以引起大鼠睾丸Leydig细胞功能降低, 形态结构改变。 【关键词】 糖尿病 2型 间质细胞 睾酮 黄体生成素 RT-PCR Research on the changes of morphology of testicular Leydig cell and the synthesized function of testosterone in the experimental type-2 diabetic rats CHEN Xi-wen*,WU Xiao-ye,FANG Zhou-xi, CHEN Guo-Rong. *Laboratory Animal Center,Wenzhou Medical College,Wenzhou,325035 Abstract: Objective: To study the pathological changes of testis and the changes of the synthesis funelion of testosterone of Leydig cells in type 2 diabetic rats. Methods: Twenty male Sprague-Dauley rats were divided into two groups randomly: normal control group and type 2 diabetic group. Morphological changes of the Leydig cells in both groups were observed under the light microscope (LM) and transmission electron microscopy (TEM). Concentration of blood luteinizing hormone (LH) and testosterone (T) were assayed with the technique of enzyme linked immunosorbent assay (ELISA). Expression of steroidogenic acute regulatory protein (StAR) mRNA, cytochrome P450 side chain cleavage (P450scc) mRNA, and cytochrome P450 17a-hydroxylase (P450c17) mRNA from Leydig cells were examined with RT-PCR respectively. Results:Compared to normal group,the number of Leydig cells decreased under LM and the volume of Leydig cells shrinked under TEM. The level of blood LH and T decreased,the mRNA expression of StAR,P450scc decreased, and the expression of P450c17 mRNA appeared descendent tendency but had no significance in type 2 diabetic group. Conclusion: Type 2 diabetes mellitus impairs T synthesis and the construction of Leydig cells. Key words: diabetes mellitus,typez;Leydig cells;testosterone;luteinizing hormone;RT-PCR 糖尿病是一种较常见的内分泌代谢障碍性疾病,其慢性并发症可影响全身重要器官,随着糖尿病发病率的逐年上升及出现的年轻化趋势,糖尿病并发的生殖损伤引起人们极大的关注。 研究证明:糖尿病大鼠性功能障碍的直接原因与持续高血糖引起的细胞代谢异常、氧化应激有关,其发病可能是通过自主神经功能障碍、糖尿病微血管病变、下丘脑对垂体-性腺轴调控障碍得以实现[1,2]。 本实验以下丘脑-垂体-睾丸轴为中心,通过光镜和电镜观察糖尿病大鼠睾丸Leydig细胞的病理改变,测定睾丸组织中LHR、P450scc、P450c17及StAR mRNA含量及血清中睾酮及LH含量,来阐述糖尿病状态下它们之间的变化关系。 1 材料和方法 1.1 动物分组及处理 由温州医学院实验动物中心提供的雄性健康60日龄SD大鼠20只,体重180~220 g,随机分为:①糖尿病组10只,给以高糖高脂饲料(饲料组成:10.0%猪油,20.0%蔗糖,2.5%胆固醇,1.0%胆酸盐,66.5%常规饲料)1个月后,按25 mg/kg剂量腹腔注射链脲佐菌素(STZ)(Sigma公司产品,溶于0.1 mmol/L枸椽酸缓冲液内,pH 4.0)。
类别: 睾酮凝胶
.潘朵拉魔幻盒:9*9*8公分 .紫色魔鏡吊飾:6.5*6公分 .潘朵拉洋娃娃粉嫩眼影:2g 成份:MICA、TALC、MINERAL OIL、TITANIUM DIOXIDE、DIMETHYL CYCLOSILOXANE、C. I. 15850:1、C. I. 19140:1 .潘朵拉魔俏濃密睫毛膏:黑色4g 成份:Iso parrffin、Vitamin-B5、Triglyceride、Silscone Gel、Propylparaben .潘朵拉眼線液:黑色4g 成份:Methyl Cellulose、Poly Vinypyrolidone、Polyglyceryl-3 Distearate、Propylparaben、Pure Water .潘朵拉櫻桃果泥唇蜜:4g 成份:Hydrogenated polybutene、Triglyceride、Tocopherol、Propylparaben、Pearl Powder .製造日期: 因生產批次不同,請以實收商品之製造日期為主﹞ .保存期限:五年 . 依衛生署公告一般化妝品均免予申請備查
类别: 凝胶植入凝聚力
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