Effect of brucine on mouse nonspecific immune responses

目的：观察镇痛有效剂量的布鲁生（Ｂｒｕ）对正常小鼠及Ｃｙｃ所致免疫低下小鼠非特异免疫功能的影响．方法：测定小鼠碳粒廓清能力、免疫器官重量及外周血ＷＢＣ，小鼠ＰＭ吞饮中性红及产生ＩＬ１能力．结果：Ｂｒｕ对正常鼠碳粒廓清能力、免疫器官重量、外周血ＷＢＣ、ＰＭ吞噬功能及产生ＩＬ１能力仅有轻微促进作用（Ｐ＞００５），而对被Ｃｙｃ降低的上述非特异免疫反应，Ｂｒｕ呈剂量依赖性的增强作用（Ｐ＜００５或Ｐ＜００１），作用以１０ｍｇ·ｋｇ－１时最好．结论：Ｂｒｕ在镇痛有效剂量ｉｐ时，对小鼠非特异免疫功能有剂量依赖性及功能依赖性的调节作用．     

人胎肾上腺线粒体细胞色素P-450体外脱甲基功能(英文)

目的:了解胎肾上腺线粒体代谢外源性化合物的能力和特征,方法:制备亚细胞组分,酶学检测脱甲基反应代谢产物—甲醛的含量,结果:在光谱分析和SDS-PAGE证实线粒体存在P-450的基础上,进一步证明线粒体P-450具有脱甲基功能,其脱甲基作用呈蛋白浓度(1-4 mg)和反应时间(10-30 min)依赖性增加,与底物浓度间有良好的量效关系,并与胎龄呈正比,线粒体中红霉素、苄非他明和氨基比林的脱甲基反应分别为微粒体中的89％,162％和62％。醋竹桃霉素增强肾上腺的红霉素脱甲基反应。结论:胎肾上腺线粒体有较强的脱甲基功能,提示胎儿肾上腺线粒体兼有药物代谢功能。     

Enhanced expression of cathepsin L in metastatic bone tumors.

Cathepsin L is a kind of cystein proteases which are known to facilitate the invasion and metastasis of tumor cells by degrading the components of basement membrane and extracellular matrix. This study was undertaken to investigate the expression of cathepsin L by Northern blot analysis with radiolabeled cDNA specific for cathepsin L in six normal tissues, two osteosarcoma cell lines, MG-63 and Saos-2, six primary bone tumors and six metastatic bone tumors. In six normal tissues, the highest level of cathepsin L was expressed in liver with the descending order of liver > lung > thymus > ovary > kidney > esophagus. One of the two osteosarcoma cell lines established from the primary sites expressed a high level of cathepsin L mRNA. Out of six primary bone tumors, three (50%) expressed cathepsin L mRNA, while all (100%) of six metastatic bone tumors expressed the mRNA. These results demonstrating the higher frequency of expression of cathepsin L in metastatic bone tumors suggest that cathepsin L may participate in tumor invasion and metastasis.     

应用套式聚合酶链反应技术检测孕妇与胎儿巨细胞病毒感染

目的评价套式聚合酶链反应技术（ＮＴ－ＰＣＲ）加限制酶分析在孕妇与胎儿人巨细胞病毒（ＨＣＭＶ）感染检测中的应用价值。方法应用ＮＴ－ＰＣＲ及限制酶分析、病毒分离、电镜观察和特异性抗体测定,对各孕期孕妇３６７例的外周血、部分孕妇脐血及死胎组织进行ＨＣＭＶ检测。结果孕早、中、晚期ＨＣＭＶ阳性检出率分别为８．６％、１．６％及７．０％,ＮＴ－ＰＣＲ检出率（４．９％）高于病毒分离（３．０％,Ｐ＜０．０２５）。６份ＨＣＭＶＤＮＡ阳性母血中,３份配对脐血ＨＣＭＶＤＮＡ也阳性。其中２对ＮＴ－ＰＣＲ、病毒分离及特异性ＩｇＭ、ＩｇＡ均阳性,１对ＮＴ－ＰＣＲ、病毒分离、特异性ＩｇＡ阳性,而ＩｇＭ阴性。２８例死胎组织中,发现１例死胎肺组织ＨＣＭＶＤＮＡ阳性。结论ＮＴ－ＰＣＲ能提高诊断ＨＣＭＶ感染的特异性与敏感性     

Cervical Positioning for Reduction of Sleep-Disordered Breathing in Mild-to-Moderate OSAS

The objective of this study was to assess whether cervical positioning could improve mild to moderate cases of the obstructive sleep apnea syndrome (OSAS). Eighteen subjects recruited from a tertiary sleep disorders clinic population with mild to moderate cases of OSAS were evaluated using a custom-fitted cervical pillow designed to increase upper airway caliber by promoting head extension. The subjects used their usual pillows during two consecutive recorded baseline nights in our laboratory. They then used the cervical pillow for 5 days at home and returned for 2 consecutive recorded nights at our laboratory to use the cervical pillow. During the nights in our laboratory, the subjects completed questionnaires, were videotaped to record head and body position, and had full polysomnography. The subjects had a significant trend toward improvement in their respiratory disturbance indices with use of the cervical pillow, despite spending more time in the supine position and having similar amounts of REM sleep in the baseline and experimental conditions. They also had nonsignificant trends toward improvements in their sleep efficiency and subjective depth of their sleep as well as significantly fewer arousals and awakenings in the experimental compared with the baseline condition. We propose that cervical positioning (i.e., head extension) with a custom-fitted cervical pillow provides a simple, noninvasive, and comfortable means of reducing sleep-disordered breathing in patients with mild to moderate OSAS.     

蟑螂管理的现场勘察与药械协同应用

有害生物广义上是指在一定条件下，对人类的生活、生产甚至生存产生危害的生物，包括有害微生物、植物、动物等，又可以分为农村害虫和城市害虫两大类。家栖鼠、蝇类、蚊类、蟑螂等危害、骚扰人类、传播疾病的节肢动物、啮齿动物等有害生物称为媒介生物。有害生物产生的根本原因是单一的人居环境无法建立生态平衡，有害生物摆脱了天敌制约，又获得人类提供的丰富食物、水和隐藏场所，因而大量繁殖，危害人类。所以，对付有害生物必须采用综合防治方法，即采用各种方法改造我们的环境（包括施加药物，制造不利于有害生物孳生的方法），使得目标环境适合人类生活、生产，而有害生物不能生存，或只能维持较小的密度，不危害人类。     

左—甲状腺素所致豚鼠肥厚心室肌细胞L—型钙电流的变化

观察左 -甲状腺素造成的豚鼠肥厚心室肌细胞 L-型钙电流变化及与血浆 T3、T4水平增高的关系。豚鼠 ip左 -甲状腺素 ( Levothyroxine,L-thy,0 .5mg/kg× 1 0 d) ,造成心肌肥厚模型之后 ,部分豚鼠 ip普萘洛尔( propranolol,pro,5mg/kg× 3d)。用全细胞膜片钳技术测定单个心室肌细胞 L-型钙电流的变化。结果 ,电流强度、电流密度在肥厚组增幅分别达 32 .95%和 35.2 4 % ( P<0 .0 1 ) ,用 pro治疗后接近正常值 ( P>0 .0 5)。血浆T3、T4含量 ,pro治疗后仍明显高于正常组 ,但肥厚有所消退 ,消退率为 66.1 2 %。结论 ,左 -甲状腺素造成的豚鼠肥厚心室肌细胞 L-型钙电流增强 ,此变化与血浆 T3、T4水平增高状态无关     

Serological prevalence and risk factor analysis of hepatitis G virus infection in Hubei Province of China

Hepatitis G virus (HGV),also known as GB virus C, is a recently cloned virus which may be associated with human non A-E hepatitis[1,2] It is parenterally transmitted and usually coinfected or superinfected with hepatitis B or hepatitis C virus[3-5]. Some investigations have been reported on the seroprevalence and molecular prevalence of HGV infection in different areas and different population[6-15]. Current infection of HGV is diagnosed by detection of HGV RNA, and past infection with HGV is detectable by testing anti-HGV envelope protein (E2)[16-17]. To investigate the prevalence of HGV in Hubei Province, a central area of the People's Republic of China, ELISA and RT-PCR were employed to detect serum anti-HGV and HGV RNA in 1516 patients who were divided into 16 groups.     

Clinical study on the D4 lymph nodes excision in advanced gastric cancer

AIM To study the safety and the traumatic degree of D4 approach by retrospective analysis of the para-operative data from the para-aortic lymph nodes excision in comparison with those from standard radicalresection in advanced gastric cancer (AGC).METHODS Several para-operative data including the resectability, the mortality, the complicatedmorbidity, the amount of transfused blood, and the hospitalized days relating to the operation were analyzedstatistically between D4(n = 30) and D2 lymph nodes excision (n = 34) groups. The data expressed as means±SD was analyzed statistically by Student t test. Percentage of the data was analyzed by x2 test statistically.It was taken as significant difference if P value was less than 0.05.RESULTS The percentage of palliated resection in D4 group was significantly lower than that in D2 group(16.67% vs 47.06%, P<0.05). This D4 radical resection would indeed prolong the drainage time (7.35±0.98 days vs 14.78±2.16 days, P < 0.01). The amount of transfused blood during operation (774.32±112.09mL) and the operative consuming time in D4 group (7.14±0.39h) increased significantly toocompared with those in D2 group (538.67±59.87mL, P < 0.05; 4.12±0.18h, P < 0.05), suggesting that thedraumatic degree of D4 operation was severer than that of D2 operation. But the mortality, the morbidity ofcomplication and the hospitalized time after D4 operation did not increase significantly, indicating that D4lymph nodes excision as a choice of the surgical treatment of AGC was safe and feasible.CONCLUSION D4 lymph nodes excision for AGC is safe, reasonable and feasible.     

大黄素与雷公藤内酯醇联合治疗大鼠抗肾小球基底膜肾炎的实验研究

目的 :观察联合应用大黄素及雷公藤内酯醇治疗大鼠抗肾小球基底膜 (GBM)肾炎的疗效　 方法 :建立大鼠自相期抗GBM肾炎模型。实验分五组 :大黄素组 (2 0 0mg/kg·d-1) ,雷公藤内酯醇 (2 0 0 μg/kg·d-1)加大黄素组 (2 0 0mg/kg·d-1) ,雷公藤内酯醇组 (2 0 0 μg/kg·d-1) ,肾炎未治疗组及正常对照组。大鼠注射肾毒血清后 6h内开始灌胃给药 ,对照组仅给等量的水。定期观察一般情况 ,并测定尿蛋白水平 ,4周后宰杀大鼠 ,观察肾组织病理改变。　 结果 :(1)大鼠肾炎模型 :大鼠注射抗血清后 2 4h内即出现大量的尿蛋白 ,其后持续维持在较高水平。 4周后肾炎组大鼠肾组织病理改变表现为肾小球中细胞浸润增多 ,新月体数明显增加 ,间质中可见较多的蛋白管型 ,无明显小管萎缩及间质纤维化。免疫荧光检查见兔抗鼠IgG沿肾小球基底膜线性分布。观察期间大鼠血肌酐水平有轻度升高。 (2 )药物疗效 :药物治疗后大鼠尿蛋白水平 ,肾小球细胞总数及新月体数较肾炎对照明显减少。两药联用组尿蛋白水平及新月体数降低最为明显。各治疗组间体重及血肌酐水平无明显差别。　 结论 :大黄素和雷公藤内酯醇能够改善抗GBM肾炎大鼠的肾脏病变 ,两药联用后疗效明显增强。