生殖周期中大鼠输卵管粘膜上皮分泌细胞超微结构的变化

目的 :探索大鼠输卵管粘膜上皮分泌细胞在生殖周期中超微结构的动态变化。方法 :常规电镜技术处理、观察。结果 :在动情期达功能活跃状态 :细胞器发达 ,分泌颗粒成片 ,充满核上区 ;动情后期细胞器呈减少趋势 ,却未见如灵长类所显示显著的去分化 ;动情间期细胞器进一步减量 ,唯溶酶体和游离核糖体增多。结论 :大鼠输卵管粘膜上皮分泌细胞超微结构在生殖周期中存在周期性变化 ,但未见显著去分化过程。     

Effect of xiongshao capsule on vascular remodeling in porcine coronary balloon injury model

Objective: To study the effect of Xiongshao capsule (XSC) on vascular remodeling in porcine coronary balloon injury model.Methods: Coronary artery restenosis model was established by oversized balloon injury at mid-region of the left anterior descending coronary artery. They were divided into 5 groups, untreated or treated with probucol, Xueguantong, low and high dose of XSC respectively, and compared. The effect of XSC on late lumen loss resulted from vascular remodeling was evaluated by quantitative histological method with combining histopathological analysis and coronary angiographie examination.Results: The (59 ± 20)% of late lumen loss was caused by vascular remodeling and (41 ± 20)% caused by intimai hyperplasia. Compared with the control group, all the treatment could significantly reduce the late lumen loss after balloon injury (P<0.05 orP < 0.01 ), both low and high dose of XSC could significantly reduce the late lumen loss caused by remodeling (P<0.05 and P<0.01 respectively).Conclusion: Vascular remodeling plays an important role in late lumen stenosis formation in coronary artery after balloon injury. XSC could significantly inhibit the pathological vascular remodeling, and thus reduce the late lumen loss and prevent the restenosis of the injured coronary artery. Part of a National Ninth-Five Planning Project (No. 96-9060601)     

阿法骨化醇对去卵巢大鼠骨质疏松症防治作用的实验研究

目的 探讨从骨量、骨结构、骨力学和骨转换等方面研究阿法骨化醇对去卵巢大鼠骨质疏松症的防治作用。方法 ５３只健康雌性未交配６个月龄Ｗｉｓｔａｒ大鼠分为６组（１）基线组（Ｂａｓｅ）６个月龄时处死;（２）假手术组（Ｓｈａｍ）;（３）去卵巢（ＯＶＸ）治疗前对照组（ＯＶＸｂ）;（４）ＯＶＸ治疗末对照组（ＯＶＸｅ）;（５）ＯＶＸ后雌激素治疗组（Ｏ＋Ｅ）;（６）ＯＶＸ后阿法骨化醇治疗组（Ｏ＋ＶＤ）ＯＶＸ后６周开     

老年人生活满意度与生存质量关系的探讨

目的 分析和探讨老年人生活满意度和生存质量的相互关系。方法 对福州市１０８４例年龄≥６０岁的老年人进行生活满意度和生存质量地流行病学调查,将两组数据分别采用因子分析法和典型相关分析法进行分析。结果 生活满意度与生存质量呈正相关关系;生存质量的高低主要由生活满意度来反映。结论提高生活满意度是改善生存质量的重要措施。     

糖尿病患者血清透明质酸、层粘连蛋白及Ⅳ型胶原的变化

目的:探讨血清透明质酸(HA)、层粘连蛋白(LN)及Ⅳ型胶原(col Ⅳ)测定在糖尿病中的意义.方法:采用放射免疫分析法测定90例糖尿病患者及76例健康对照者血清中HA、LN及col Ⅳ的含量,并初步分析它们在糖尿病中的意义.结果:①糖尿病组血清HA高于对照组(P＜0.05);②糖尿病组血清LN高于对照组(P＜0.01);③血清cd Ⅳ在糖尿病组与对照组之间比较无显著性差异(P＞0.05).结论:血清HA及LN的检测对糖尿病及其并发症的诊断具有重要价值.     

由复方中单一组分微小效应引发的对中西医结合理论的思考

“霰弹理论”认为中药作用机制和途径表现为多向性、多层面、多靶点的药理学特点 ,这些特点决定了中药复方中任何一种单一组分均可具有微小的生物学效应。在药物组分之间的相互作用中 ,除了少数已证明具有受体效应的组分外 ,多数组分是微效组分 ,即 :中药药效 =A B C …N个微小效应的累加作用。对某一组分不能忽略其生物学的微小效应 ,也不能采用简单的检测手段和数学统计方法分析微小效应。采用细胞培养的方法结合数学概率论将组分的微小生物学效应合并成机体的整体的生物学效应 ,可以解决实验医学与中医结合中遇到的理论与实际相脱节、实验研究结果与临床效果相背离等问题。     

安胃降逆饮对大鼠胃功能的影响

目的 观察安胃降逆饮对胃功能的影响,分析其镇吐作用机制。方法 采用大鼠离体胃条法测定胃条张力,小鼠粉红排空试验法测定胃排空量和０．１ｍｏｌ／Ｌ ＮａＯＨ滴定法测定胃酸含量。结果安胃降逆饮对大鼠胃肌物基础张力和乙酰胆碱引起的痉挛性收缩有明显抑制作用（Ｐ〈０．０１）,对小鼠胃排空,大鼠胃液量,胃液酸度及总酸度无明显影响（Ｐ〉０．０５）。结论 安胃降逆饮的镇吐作用至少部分是通过抑制胃肠平滑肌蠕动而发挥作     

Effect of intranasal structure-normalizing surgery on allergic rhinitis: A primary report of 41 cases

The heatment of allergic rhinitis is yet qUite a challeopng and intrigUing Pchem, and there has not beeneradicable modality. Dings often relieve symptomS tempowhly. Selechve nerve block surgerys such as section andelectroCauterization of Vidian nerve, anterior ethlnoidalnerve and sphenoplatine nerve, have brought us a newProspect, but long-term results still need checking andthey are not considend to be adopted until Ph~otherapy and ilnlnunotherapy come to failu.[l]. Clinically, allergic rh…     

Adenovirus-mediated p53 gene therapy in nasopharyngeal cancer

EBV-associated nasopharyngeal cancer (NPC) occurs with high frequency in China and is a major cause of morbidity and mortality. To explore the potential use of adenovirus-mediated tumor suppressor p53 gene therapy In NPC, we first examined the in vitro effects of p53 introduced into the NPC cell lines RPMI 2650, Fadu and Detroit 562. p21(WAF1/CIP1) induction by chemotherapy was used as a functional assay which revealed that RPMI 2650 expresses wild-type p53 whereas Fadu and Detroit 562 encode mutant p53. Infection with p53-expressing adenovirus (Ad-p53) induced apoptosis and inhibited cell growth in all three NPC cell lines, regardless of the endogenous p53 status. Adenovirus infectivity was greatest in RPMI 2650 cells, with 100% of the cells expressing beta-galactosidase following Ad-LacZ infection using an MOI of 100, as compared to 20-30% infectivity with the other NPC lines. Using RPMI 2650 cells injected into nude mice, we developed an animal model for nasopharyngeal cancer. Established tumors (0.6-0.8 cm) were injected with 5x10(9) PFU Ad-LacZ, Ad-p53 or PBS in a 100 mu l volume. We found evidence for in vivo expression of beta-galactosidase or p53 and p21 up to two weeks following Ad-LacZ or Ad-p53 virus injection respectively. Objective regression of tumor size was observed at two weeks in 4/6 Ad-p53-treated tumors, but not in Ad-LacZ or PBS-treated tumors. The results provide an animal model for human nasopharyngeal cancer, and indicate a potential use of p53 in its therapy in vivo.     

Predicting the viability of grafted livers in rats through a rapid and sensitive metabolic indicator assessed by 31P-NMR spectroscopy

The present study was undertaken to clarify whether a correlation exists between the hepatic ratio of the -phosphorous moiety of ATP (-ATP) to inorganic phosphate (Pi), measured by ³¹P nuclear magnetic resonance spectroscopy 1 h after the reestablishment of portal blood flow, and the survival rate of rats following liver transplantation. This ratio was compared with the arterial ketone body ratio [AKBR (acetoacetate/3-hydroxybutyrate)], which is accepted as a reliable indicator of liver viability. After the transplantation of fresh livers, the 1-week survival rate was 92% and the -ATP/Pi ratio was 64% of the normal level. When the liver grafts were subjected to warm ischemia for 25 min or 45 min prior to harvesting, the 1-week survival rate decreased to 43% and 0%, respectively, and the -ATP/Pi ratio dropped to 31% and 18% of the normal level, respectively. On the other hand, the AKBR was about 25% of the normal level after transplantation of fresh livers, while it was 37% and 48% after transplantation with 25 min and 45 min of warm ischemia, respectively. However, 4h after the reestablishment of portal blood flow, the AKBR correlated with the -ATP/Pi ratio in both the fresh graft group and the 45-min warm ischemic damage group. These results show that the -ATP/Pi ratio provides an accurate evaluation of a graft viability even at an extremely early stage following liver transplantation, and should prove useful for the early diagnosis of primary graft nonfunction after liver transplantation.