系统性红斑狼疮患者外周血淋巴细胞增殖反应与其产生甲硫氨酸脑啡肽的关系

目的研究系统性红斑狼疮(SLE)患者外周血淋巴细胞(PBL)增殖反应与其产生甲硫氨酸脑啡肽(Met-Enk)的关系.方法淋巴细胞增殖法和Met-Enk放免测定.结果 SLE患者PBL增殖反应异常增高的同时,其产生的Met-Enk亦明显升高.结论 PBL产生的内源性Met-Enk可能参与了SLE患者PBL增殖反应的异常改变.     

北京市一些高级办公大楼室内空气质量问题探讨

我们调查了北京一些高档的空调建筑,包括商业和政府机构办公大楼,测试了主要的室内污染和室内气象参数,如温度、湿度、风速等。测试结果指出,在这些建筑中存在着严重的室内空气质量问题。而且,引起不良室内空气质量的原因不是单一的而是多方面的。因此如何提高室内空气质量,为人们提供健康而舒适的室内环境,是空调设计者的迫切任务。     

雪旺细胞和纤连蛋白对脊髓损伤后功能恢复的初步研究

目的：观察雪旺细胞和纤连蛋白对大鼠损伤的脊髓的功能的影响。方法：将体外培养的雪旺细胞结合纤连白植入大鼠半切损伤的脊髓内,用脊髓诱发电位及图像分析方法比较治疗组和对照组诱发电位潜伏期,再生轴突计数及二者间的关系。结果;雪旺细胞结合纤连蛋白治疗纽脊诱发电位潜伏期显著缩短,再生轴突明显增多,二者呈负相关。结论：雪旺细胞结合纤蛋白移植具有促进脊髓损伤后轴突再生的作用,并能够分恢复体髓的传入功能.     

Studies of β-lactamase production in ampicillin resistant Haemophilus influenzae

In 1972, HaelnOPhilus influenzae (HI) was firstlydiscovend being resistant against alnpicillin by producing5-lac~e, since then, studies on the rests~ mechamsms and the moleCular basis of 5-lactalnaSe Pwhctionhave been increasing year by yeax abroadll]. In 1978,Bryan et .l[2] first reported sabins of HI Producing 0-lactamaSe, which was mediated by plaaed, from then on,many stUdies foeused on 3-lactamase encoded by PlaSnddin HI and its relation with ampicillin resisboce. In ourco~, few st…     

胰腺多房性潴留性囊肿1例

0　引言　胰腺多房性潴留性囊肿极为罕见,我科收治1例,报道如下.1　病例报告　患者,男,29岁,因发现右上腹包块11d入院,缘于11d前无明显诱因感右上腹痛,仅局限于右上腹部,无肩背部放散痛,伴间歇性发热,体温最高达38.3℃,经抗炎,对症治疗无效.并逐渐可触及右上腹有一肿块,在当地医院行穿刺检查为脓血性液体.镜检发现炎性细胞,B超示:胆囊窝下方及右肾内侧及腹腔动脉,下腔静脉外前方可见异常区,大小约9.1cm×6.6cm×7.6cm,边界清楚,形态不规则,内呈蜂窝状,可见多个大小不等的液性暗区,CT示:右上腹部上腔静脉前方6.0cm×9.0cm肿块和周围组织粘…     

急性髓细胞白血病血型变异1例

1　临床资料　患者 ,女 ,6 1岁 ,1999- 0 6 - 0 3日确诊为急性红白血病 (M6 ) .先后 4次住院 ,鉴定血型均为 O型 . 2 0 0 0 - 0 1- 2 2日复诊 ,正反鉴定表明 ,患者红细胞与抗 - B不凝集 ,与抗 - A凝集 ,血清中有抗 - B抗体 (表 1) ,吸收释放试验证实为 A型 (表2 ) .输 A型浓缩红细胞 2 μ,无不良反应 .表 1　血型正反鉴定试剂血清试剂红细胞标本抗 A 抗 B 抗 A+ B Ac Bc Oc被检红细胞 2 + -3+ ---自身血清 -3+ -表 2　吸收、放散试验被检 RBC吸收抗血清后上清被检 RBC吸收抗血清后释放液试剂细胞抗 A修正液抗 B修正液抗 A修正液抗…     

4-硒硫酸酯多糖的体内抗瘤作用

目的　观察 4-硒硫酸酯多糖 (Se-carra)的体内抗瘤作用。方法　于小鼠右腋皮下接种瘤细胞 2 4h后开始给药 ,连续 10天 ,观察其抑瘤率 ;小鼠腹腔接种肿瘤细胞前或接种后连续给药 10天 ,观察动物的生存时间。结果　 4-硒硫酸酯多糖能明显抑制肿瘤细胞的生长 ,延长小鼠的生存期。结论　 4-硒硫酸酯多糖体内给药有良好的抗瘤效果 ,值得进一步研究。     

医学大学生对医德认知的调查研究

采用抽样研究方法,对４３８名不同专业、不同层次的大学生进行了医德认知调查,以了解大学生对医德基本知识掌握的情况,结果表明,大学生对开设医学伦理学课必要性认识均率为６２．９％,课外经常阅读医德书籍均率为２２．７５％,对中外基德发展史各朝代典型的人物及代表作了解的均率为３１．１％,文中对调查结果进行了分析。     

功能性消化不良患者胃膨胀感知的改变

目的研究功能性消化不良（ＦＤ）患者胃膨胀感知的改变。方法应用灌注导管测压仪研究了７例ＦＤ患者、５例ＦＤ并心理异常患者及５例正常人胃对容量刺激的感觉。结果发现ＦＤ患者胃对容量刺激的最低敏感性阈值、不适阈值及疼痛阈值分别为（１９５．７±６５．３）,（３０４．３±５８．６）,（４６４．３±４７．２）ｍｌ,ＦＤ并心理异常患者为（１２３．０±４０．３）,（２５４．０±４９．８）,（４６６．０±７６．４）ｍｌ,均明显低于正常人的（３２７．０±４４．７）,（５３２．４ ±１０７．４）,（６７８．０±１１７．４）ｍｌ（Ｐ＜０．０１）;三者的胃顺应性无明显改变。结论胃对容量刺激的感知过度敏感是ＦＤ发病的机制之一。     

Behavioural interaction between the NMDA antagonist MK-801 and the dopaminergic antagonist haloperidol: support for a balance model

One hundred and four male Sprague-Dawley rats were divided into three experiments. The first two experiments were to assess the effect of different MK-801 doses (0.1-0.3 mg/kg) and combinations of MK-801/ haloperidol (0.3/0.1-0.5 mg/kg) on locomotor behaviour. The animals from the third experiment were administered either saline, MK-801 (0.3 mg/kg), haloperidol (0.5 mg/kg) or MK-801/haloperidol (0.3/0.5 mg/kg). Locomotor activity measurements showed that the NMDA antagonist MK-801 induced a dose-dependent hyperactivity, while haloperidol, the D-2 dopamine receptor antagonist, induced hypoactivity. Significantly the highest doses of combined MK-801/haloperidol treatment (0.3/0.5 mg/kg) showed behavioural equivalence to the saline animals in both total locomotion, locomotion patterns and within-session habituation. Thus, the behavioural effects of each drug given alone were cancelled when the drugs were given together. This cancellation effect could not be ascribed to direct drug interference effects on dopamine metabolism since the ex vivo biochemical data revealed that the combined MK-801/haloperidol (0.3/0.5 mg/kg) treatment increased dopamine metabolism to the same extent as haloperidol given alone. None of the drug treatments, however, had any effect on brain serotonin metabolism. Serum measurement indicated that dopamine, homovanillic acid, 3,4-dihydroxyphenyl-acetic acid, 5-hydroxyindole-3-acetic acid, norepinephrine and corticosterone were not differentially affected by the drug treatment. Haloperidol-treated animals, however, had higher serum serotonin concentration than saline-treated animals. Taken together, these results support the hypothesis that the effect of MK-801 on behaviour is independent of biochemical changes in dopaminergic neuro transmission per se. Rather, the present results support the hypothesis of a glutamatergic-dopaminergic balance which when disturbed leads to behavioural changes along an excitatory-inhibitory behavioural gradient.