氯沙坦长期治疗对自发性高血压大鼠血管结构的影响

目的 :评价血管紧张素Ⅱ受体 1(AT1)拮抗剂氯沙坦 (Losartan)对自发性高血压大鼠 (SHR)血管结构的影响及在减缓高血压血管损害中的潜在作用 ,并探讨在高血压血管壁增厚的过程中醛固酮所起的作用。方法 :采用 10周龄SHR 16只 ,随机分为Losartan(SHRLOS)治疗组和对照组 (SHR) ,另选 10只同龄Wistar鼠作为正常对照。腹主动脉插管测定收缩压 ,应用计算机图像分析 ,计算血管中膜 /内径比 ,用光镜观察各组主动脉的结构变化 ;行肠系膜动脉离体灌注、反向高效液相 (HPLC)纯化和放免检测氯沙坦对血管局部合成醛固酮的影响。结果 :SHRLOS组收缩压 (SBP)与SHR组相比明显下降 (P =0 .0 0 1) ;其血管中膜 /内径比较SHR组显著降低 ,但仍高于Wistar组 ,血管壁结构接近Wistar组 ;SHRLOS组血管AngⅡ与SHR组无差异 ,醛固酮水平降至Wistar组。结论 :氯沙坦抑制血管合成醛固酮 ,逆转血管重构是其治疗高血压的机理之一。     

萘普生对肿瘤性和感染性发热的解热作用

通过双盲法研究表明,萘普生可使肿瘤性发热很快完全消退,对感染性发热很少有解热作用。而扑热息痛对肿瘤性发热和感染性发热的解热作用与萘普生相反。萘普生、扑热息痛可用作肿瘤发热的诊断性治疗。     

Impedance study of the electrochemical reduction of adrenochrome on glassy carbon

The electrochemical reduction of adrenochrome on a glassy carbon electrode was investigated by ac impedance in a constant ionic strength McIlvaine buffer solution. When the frequency was lower than 60 kHz, —Z″ against Z′ showed straight lines whose inclined angles with the real axis were within the range 71–76° in the diagrams of the complex impedance plane obtained at different do potentials. In the corresponding admittance diagrams, distorted semicircles appeared. The electrode reaction involves adsorption of electroactive species and the effect of concentration polarization cannot be neglected. Based upon the admittance model of the equivalent circuit, the optimal estimated values of some model parameters were obtained by using a Gauss-Newton algorithm and non-linear curve fitting. The characteristics of the electrode process are also discussed.     

南阳市1999～2001年新生儿破伤风疫情监测

目的 对南阳市3年的新生儿破伤风疫情监测结果进行分析，掌握该市新生儿破伤风发病概况，有针对地制订防治对策。方法 对3年的监测资料进行分析评价。结果 1999—2001年3年的发病率分别为0．09‰、0．07‰、0．04‰，发病县3年的年发病率均小于1‰。结论 开展各种形式的宣传活动，提倡住院分娩，推广消毒接生，对育龄妇女进行破伤风类毒素接种，从而有效降低其发病率。     

原发性骨质疏松患病率调查

目的：了解原发性骨质疏松症(primary osteoporosis.POP)的患病率。方法：选取235名志愿者，男性97名，女性138名，年龄19—79岁，平均53．22岁。运用Scanner SN 3314对跟骨的骨质密度(BMD)进行测量。结果：男性BMD高于女性，有统计学意义(P＜0．01)；男女的BMD随着年龄的增长均降低。POP患病率女性高于男性，女性急病率在60岁以后明显增加。     

GGTⅡ,ALPⅠ,AAT诊断原发性肝癌探讨

对１０１例原发性肝癌（ＰＨＣ）同步检测几项标记，其阳性率为ＡＦＰ７６．２％，ＧＧＴⅡ８５．１％，ＡＬＰⅠ２４．８％，ＡＡＴ７５．１％。与肝硬化、慢性肝炎、肝良性占位性病变、肝外肿瘤、正常人等组比较，差异有显著性。假阳性率以肝硬化用组高，分别为ＡＦＰ１５．０％，ＧＧＴⅡ１０．０％，ＡＬＰⅠ３．３％，ＡＡＴ２６．７％。在ＡＦＰ＜５０ｎｇ／ｍｌ２４例中，ＧＧＴⅡ阳性率为７０．８％，ＡＬＰⅠ为１６．７％，ＡＡＴ为６６．７％。本文结果显示、ＧＧＴⅡ诊断ＰＨＣ敏感性、特异性均佳，优于ＡＦＰ、ＡＬＰⅠＩ及ＡＡＴ。ＧＧＴⅡ与ＡＦＰ互补诊断可提高阳性率。     

输卵管绝育术后并发异位妊娠病因及其防治的探讨

本文总结我院２０年中输卵管绝育术后并发异位妊娠的有关临床资料，主要以陈旧性宫外孕为其临床特征，仍以停经、腹痛、阴道出血为主要症状，对绝育术致宫外孕的有关因素及其预防进行了分析探讨。     

脉冲式电磁辐射对大鼠血脑屏障影响的量效关系

目的 研究脉冲式电磁辐射(EMR)对大鼠血脑屏障(BBB)影响的量效关系。方法 采用伊思蓝静脉注射，荧光显微镜下观察不同脉冲次数的EMR辐照对大鼠BBB开放的影响。结果 伊思蓝在EMR诱发的大鼠BBB开放局部呈现荧光斑；随着EMR脉冲次数(0～200次)的增加，荧光斑数量增加、面积增大；荧光斑在EMR组全脑的分布，以皮质、丘脑、下丘脑、小脑、尾壳核和延髓较多。结论 不同脉冲次数EMR诱发大鼠BBB开放程度不同，随脉冲次数增加，血管通透性增强，200次时达开放高峰，皮质区BBB开放最明显。     

Stimulation of ovarian tumor cell proliferation with monocyte products including interleukin-1, interleukin-6, and tumor necrosis factor-alpha.

OBJECTIVE: We investigated whether monocyte-derived factors could stimulate the growth of ovarian cancer cells. STUDY DESIGN: Human peripheral blood monocytes or human monocyte-like cell lines THP-1 and U-937 were cultured with or without macrophage colony-stimulating factor, lipopolysaccharide, or phorbol myristate acetate. Culture supernatants or recombinant cytokines were assayed for growth stimulation of ovarian cancer cell lines by tritium-thymidine incorporation and direct cell counts followed by statistical analysis with Student t test. RESULTS: Conditioned medium from peripheral blood monocytes or from THP-1 or U-937 cells stimulated ovarian cancer cell growth. Interleukin-1 alpha, tumor necrosis factor-alpha, and interleukin-6 also stimulated ovarian cancer cell growth, whereas macrophage, granulocyte, and granulocyte-macrophage colony-stimulating factor did not. Concentrations of tumor necrosis factor, interleukin-1, and interleukin-6 in conditioned medium could not account for all the growth stimulation, and activity remained after neutralization of tumor necrosis factor, interleukin-1, and interleukin-6 with antibodies. CONCLUSIONS: Interleukin-1, interleukin-6, tumor necrosis factor, and additional monocyte factor(s) could provide paracrine growth stimulation when monocytes are attracted to ovarian cancers that produce macrophage colony-stimulating factor.