复方茵陈蒿汤对兔奥狄氏括约肌肌电活动及胆总管压力的影响

目的:揭示奥狄氏括约肌肌电活动与机械收缩的关系和复方茵陈蒿汤治疗胆石症的作用机制。方法:采用同步记录技术,动态观察灌胃前后兔奥狄氏括约肌肌电活动及胆总管压力的变化。结果:胆总管压力波动与括约肌肌电发放在时程上一致,药后30～75min,括约肌肌电脉冲频数明显增加,其增值明显高于相应时间的给予等量水灌胃的对照组(P<0.05,60min,P<0.01),胆总管压力无相应的升高。结论:奥狄氏括约肌肌电活动与机械收缩相藕联,复方茵陈蒿汤通过兴奋括约肌肌电活动,增强括约肌的节律性舒缩,促进胆汁排放。     

Effects of the glucoprotein component of musk on functions of rat polymorphonuclear leukocytes activated by LTB4 in vitro]

To investigate the effects of musk-1, a glucoprotein component isolated from the water extract of musk, on some functions of rat polymorphonuclear leukocytes activated by LTB4, an in vitro incubation system with rat polymorphonuclear leukocytes was used. The superoxide anion production was determined by cytochrome C reduction, and the beta-glucuronidase and lysozyme release was quantitated by enzyme reactions in which phenolphthaleinglucuronic acid and micrococcus lysodeikticus were used as the substrates. In comparison with the control, musk-1 at final concentrations of 1 microgram/ml-100 micrograms/ml can increase the superoxide anion production by 28.7%-202.1% and decrease the beta-glucuronidase and lysozyme release by 3%-46% and 6%-32% respectively in rat polymorphonuclear leukocytes. It is concluded that musk-1 can significantly affect the functions of rat polymorphonuclear leukocytes activated by LTB4. One of the mechanisms of this anti-inflammatory action of musk may consist in the inhibition of lysosomal enzyme release.     

双歧杆菌对实验性大肠癌化bcl-2及bax基因表达的影响

目的 通过观察大肠癌裸鼠移植瘤bcl-2及bax基因的蛋白表达水平,探讨双歧杆菌的抑瘤途径及机制.方法 采用免疫组化SP法检测了40只裸鼠大肠癌移植瘤bcl-2及bax基因的蛋白表达率及表达强度.结果 双歧杆菌注射组大肠癌移植瘤bcl-2蛋白表达率及阳性细胞密度均低于肿瘤对照组,bax基因的表达情况则相反.结论 双歧杆菌可使大肠癌裸鼠移植瘤的bcl-2基因表达下调,bax基因表达增强,最终诱导肿瘤细胞凋亡,实现其抗瘤目的.     

T细胞及相关免疫分子在淋巴细胞趋化因子增强肿瘤自杀基因疗法中的作用

本室以往的研究表明,用腺病毒作为载体将大肠杆菌胞嘧啶脱氨酶(CD)基因与小鼠淋巴细胞趋化因子(Itn)基因联合体内转染,具有显著的抗肿瘤效应.本文对其免疫机理进行了进一步研究,发现CT26结肠腺癌细胞体外经过CD/Ltn基因转染并给予前体药物5-FC后,CT26结肠腺癌细胞表达CD80和CD54分子明显增加,提示经CD自杀基因和Ltn基因联转移后,肿瘤细胞免疫原性增加.荷瘤小鼠体内经联合治疗后,小鼠脾细胞分泌IL-2和IFN-γ明显增加.体内用抗CD4、CD8抗体阻断实验研究结果的表明,联合应用自杀基因和Ltn基因治疗主要通过诱导CD8~ T细胞发挥抗肿瘤作用.     

TUMORS INVADING PARAPHARYNGEAL SPACE : REFINED IMAGING DIAGNOSIS

ＴＵＭＯＲＳＩＮＶＡＤＩＮＧＰＡＲＡＰＨＡＲＹＮＧＥＡＬＳＰＡＣＥ：ＲＥＦＩＮＥＤＩＭＡＧＩＮＧＤＩＡＧＮＯＳＩＳＺｈｕａｎｇＱｉｘｉｎ庄奇新ＣｈｅｎｇＹｉｎｇｓｈｅｎｇ程英升ＹａｎｇＳｈｉｘｕｎ杨世埙Ｓｈａｎｇｋｅｚｈｏｎｇ尚克中ＹａｎＸｉｎｈｕａ...     

Human sperm endothelial nitric oxide synthase expression: correlation with sperm motility

Objective: To characterize the pattern of endothelial nitric oxide synthase (eNOS) expression on human spermatozoa and to determine whether sperm eNOS expression correlates with sperm function.

Design: Prospective, observational study.

Setting: University infertility clinic.

Patient(s): Twelve nonazoospermic infertile men.

Intervention(s): Semen samples (n = 12) obtained from nonazoospermic infertile men were fractionated on discontinuous Percoll gradients. Endothelial nitric oxide synthase staining on spermatozoa was correlated with sperm motility in Percoll gradient–fractionated spermatozoa. Endothelial nitric oxide synthase protein was detected with the use of a previously characterized monoclonal antibody. Control slides were incubated with preabsorbed antibody or mouse immunoglobulin G.

Main Outcome Measure(s): Localization of eNOS on human spermatozoa and correlation between the pattern of sperm eNOS expression and sperm motility.

Result(s): Morphologically normal spermatozoa exhibited postacrosomal and equatorial eNOS immunostaining. However, abnormally shaped spermatozoa often exhibited aberrant staining (in the midpiece and/or head region). A significant negative correlation was observed between the percentage of sperm with aberrant eNOS immunostaining and the percentage of motile sperm (r = −.46).

Conclusion(s): The specific localization of eNOS to human spermatozoa suggests that nitric oxide may be involved in normal sperm physiology. However, aberrant patterns of sperm eNOS expression are associated with decreased sperm motility, possibly through the generation of excessive cytotoxic oxidants.     

应用昆虫病原线虫防治枸杞负泥虫的研究

枸杞负泥虫LemadecempuntataScopoli是药用植物枸杞的重要害虫。我们从它的体背上经常覆盖有茶褐色虫屎的特性考虑，应用昆虫病原线虫进行了防治试验。在室内筛选中发现这种害虫对芫菁夜蛾线虫Steinernemafeltiae及小卷蛾线虫S．carpocapsae十分敏感，感染死亡率达90％以上。在田间防治中，用1500～1600条／mL线虫悬浮液喷在枸杞上，杀虫效果可达70％以上。试验证明，昆虫病原线虫对枸杞负泥虫的防治是具有应用前景的。     

不同穴位针刺对暂时性局部脑缺血大鼠皮层体感诱发电位和脑梗塞体积的影响

观察不同穴位针刺对暂时性局部脑缺血的作用，采用皮层体感诱发电位测定和ＴＴＣ染色法，结果表明，电针能促进皮层体感诱发电位的恢复，可使脑缺血后脑梗塞体积减小，且督脉穴位针刺在促使脑缺血后皮层体感诱发电位恢复上可能具有相对较强的作用。     

ACUPUNCTURE TREATMENT FOR 51 CASES OF INCONTINENCE OF URINE AND STOOL CAUSED BY EXCESSIVE SORROW AND FRIGHT

Incontinenceofurineandstoolisadiseasethatpatientcannotcontrolurinationanddefeca-tionatastateofclearconsciousness.Alotoffactorsofsocialpsychologymaybringaboutthisdisease.51casesofthediseasecausedbyexcessivesorrowandfrightwerestudiedandtreatedwithacupunctur…     

精神分裂症患者细胞免疫和外周血异常白细胞的研究

目的探讨初诊为精神分裂症患者血清中IgG、补体C3、外周血T淋巴细胞亚群、外周血异常淋巴细胞形态等的改变情况。方法收集30份初诊为精神分裂症患者,21份正常献血员的血样。用BN-100特定蛋白分析仪检测血清IgG、补体C3。用FACSCalibur流式细胞仪检测T淋巴细胞亚群。用瑞氏姬姆萨法研究外周血白细胞形态学,计数P细胞、S细胞、正常淋巴细胞的百分比。结果精神分裂症患者的IgG和C3均低于正常对照组(P均<0.05),CD8+高于正常对照组(P<0.05),CD3+、CD4+与对照组比较无显著性差异(P均>0.05),各淋巴细胞百分率与对照组比较有显著性差异(P均<0.01)。结论精神分裂症患者多伴有免疫指标的异常及外周血淋巴细胞形态的异常,提示可用免疫调节剂辅助治疗本病。