人工培植牛黄中主要成分的薄层色谱扫描法

天然牛黄为名贵中药材,但货源紧缺供不应求,为此拟利用人工培植方法获得天然牛黄以利扩大药源。本文对十七个人工培植牛黄主成分进行定量分析,并与天然牛黄及人工合成牛黄作对比,从成分上探讨了人工培植牛黄的质量。     

海南山苦茶提取方法的研究

目的:优化山苦茶的提取方法。方法:采用薄层层析法,以所得浸膏的量及其有效成分为考查指标,对山苦茶提取方法进行研究。结果:4种不同提取方式对山苦茶的有效成分的提取效率有明显影响。结论:山苦茶的最佳提取方法为:将山苦茶用工业乙醇浸渍24h后,以每千克每分钟1～3ml的流速缓缓渗漉,收集10倍量的渗漉液回收即得。     

绝经前后子宫内膜癌的病理及临床特点110的分析

目的:探讨子宫内膜癌在绝经前发病与绝经后发病的临床及病理特征。方法:将1990年1月—2001年1月我院收治住院有完整资料的110例病例作一回顾性分析。结果:由于绝经后组子宫内膜癌在手术分期、细胞分化、肿瘤细胞的亚型及发生淋巴结转移的程度上均差于绝经前组,提示绝经后发生子宫内膜癌的预后差于绝经前的子宫内膜癌。     

人体子宫内膜血管内皮生长因子的研究

目的 :对人体子宫内膜增殖期 (n =3)、分泌期 (n =6 )和增生过长 (n =6 )标本 ,进行VEGF的免疫定位和半定量测定 ,了解雌激素对子宫内膜VEGF的影响。方法 :研究组用免疫组织化学方法 ,对照组用无关的免疫球蛋白代替第一及第二抗体 ,用辅助视频图像分析系统进行计算。结果 :增殖期VEGF在腺体 (P <0 .0 0 1)和间质 (P <0 .0 1)的浓度 ,明显高于分泌期和子宫内膜增生过长 ,总的看来 ,腺体的VEGF高于间质。结论 :雌激素提高子宫内膜的VEGF的含量 ,并与增殖晚期新的血管形成和血管通透性增加有关。此外 ,子宫内膜增生过长的腺体VEGF并不升高 ,提示人体子宫内膜的腺体生长和血管生成调节是不同的。     

Intrauterine light delivery for photodynamic therapy of the human endometrium

Photodynamic therapy is currently being evaluated as a minimallyinvasive procedure for endometrial ablation not requiring anaesthesia.Light penetration depths at 630, 660 and 690 nm and the optimalconfiguration of intrauterine light-diffusing fibres were determinedin 14 human uteri to assist in the design of a light intrauterinedevice. Post-menopausal ex-vivo uteri showed a significantlylower light penetration depth than pre-menopausal uteri. Witha single central diffusing fibre inserted, the fluence ratemeasured in the uterine wall at the most remote point of thecavity decreased to 1.1 ± 0.4% of that measured at closestproximity, whereas it decreased to only 40.0 ± 9.0% withthree fibres. Distension of the uterine cavity with 2 ml ofan optically clear fluid increased the fluence rate at the fundusbetween the fibres at a depth of 2 mm by a factor of 4. We concludethat in normal-sized pre-menopausal uterine cavities, threediffusing fibres will deliver an optical dose above the photodynamicthreshold level at a depth of 4 mm, even in the most remoteareas, in <30 min without causing thermal damage. For distortedand elongated cavities, either slight distension of the cavityor the insertion of a fourth diffusing fibre is required.     

分清五淋丸的薄层色谱鉴别

目的寻找控制分清五淋丸质量的方法。方法利用薄层色谱对其中大黄、黄柏、黄芩和栀子4种主药进行检出研究。结果样品不仅与黄连素、黄芩素和栀子甙对照品有一致的层析斑点,且与对照药材有一致或基本一致的层析斑点。结论薄层色谱方法是控制分清五淋丸质量的有效方法。     

宫内节育器与兔子宫内膜生成内皮素的研究

自制金属单环放入兔左侧子宫角腔内,有明显抗生育效果,此为动物模型。选10只成年雌兔分为二组,将节育环放入每只兔左侧子宫角腔内,右侧为对照。一个月,三个月取子宫内膜,进行形态学观察,内皮素免疫组化定位及内膜组织中内皮素含量的测定。结果显示:内膜形态无明显改变,只在少数局部淋巴细胞略多。内皮素免疫组化定位显示左侧子宫角阳性反应比右侧强,一个月和三个月结果相似。放射免疫测定的内膜组织中内皮素含量左侧明显高于右侧。揭示金属单环引起内膜组织生成内皮素增加。     

Signals and molecular pathways involved in apoptosis, with special emphasis on human endometrium

Apoptosis is a selective process for deletion of cells in variousbiological systems. This event, similar to proliferation, istightly regulated, with both processes playing essential rolesin the homeostasis of renewable tissues. In human endometrium,proliferation and apoptosis occur at opposing poles of the menstrualcycle. The proliferative phase is marked by rapid growth ofthe endometrial epithelial lining, whereas progressive increasein apoptosis in this tissue is the hallmark of the secretoryand menstrual phases. The purpose of this review is to highlightsome of the signals and molecular events which are associatedwith and that may participate in apoptosis. This is followedby a review of the current literature regarding apoptosis inhuman endometrium.     

茎突CT薄层冠状扫描在诊断茎突过长综合征中的价值

目的 探讨“一点一线垂直法”茎突CT薄层冠状扫描在诊断茎突过长中的价值。方法测量72例双侧茎突的长度、方位、形态、厚度、尖端与咽侧壁距离,总结茎突过长病人的临床症状与诊断。 结果 ①41例67侧长度超过3.0cm,符合茎突过长的诊断;②12例12侧茎突虽未超过3.0cm(均在2.5～2.9cm),且茎突方位角>20°、末端与咽侧壁的距离<20mm,并有临床症状的应考虑茎突过长综合征;③按茎突的形态进行分型:锥型(分直锥、弧锥),束状型,分节型,发育不良型。其中分节型与临床症状有密切关系。结论 ①茎突CT薄层冠状扫描能清晰显示茎突的长度、形态、厚度、末端与咽侧壁距离,是诊断茎突过长的一种可靠方法;②“一点一线垂直法”茎突CT薄层冠状扫描无需进行图像重建,可操作性强、简捷易行、便于推广。