短暂性脑缺血发作患者血浆中TXB2和PGF1α含量检测

本文用放射免疫法测定47例短暂性脑缺血发作(TIA)患者血浆中血栓素B_2(TXB_2)和6酮-前列腺F_(1α)(PGF_(1α))的含量。结果发现TIA患者血浆中TXB_2含量增高,PGF_(1α)降低;头颅CT或MRI示有小灶性梗塞者及TIA发作持续时间长于30min者TXB_2升高和PGF_(1α)降低更显著。治疗3个月后,血浆PGF_(1α)显著增高。TXB_2和PGF_(1α)在体内的失平衡是急性脑血管疾病发病的重要机理之一。     

应用聚合酶链反应（PCR）检测乙型肝炎患者的HBV一DNA

应用聚合酶链反应（ｐｏｌｙｍｅｒａｓｅｃｈａｉｎＲｅａｃｔｉｏｎ，ＰＣＲ）检测１０８例乙型肝炎患者血清中ＨＢＶ一ＤＮＡ，在不同类型的ＨＢＶ感染标志物（ＨＢＶＭ）的血清中结果有所不同：（１）在ＨＢｓＡｇ、ＨＢｅＡｇ和抗ＨＢｃ阳性血清中，ＰＣＲ阳性率８６．１１％（３１／３６）；（２）在ＨＢｓＡｇ、抗ＨＢｅ和抗ＨＢｃ阳性血清中，ＰＣＲ阳性率５５．８８％（１９／３４）；（３）在抗ＨＢｓ、抗ＨＢｅ和ＨＢｃ阳性血清中，ＰＣＲ阳性率为２０％（２／１０）；（４）在抗ＨＢｅ和抗ＨＢｃ阳性血清中，ＰＣＲ阳性率为２５％（２／８）；文中就ＰＣＲ检测的结果及临床意义作了扼要的讨论。     

The subdivisions of the intermediolateral nucleus in the sacral spinal cord of the cat

The subdivisions of the sacral intermediolateral nucleus (IML) of the cat have been studied by using a double-labeling technique of retrograde Fluoro-gold (FG) and wheat germ agglutinin-conjugated horseradish peroxidase (WGA-HRP) tracing. The parasympathetic preganglionic neurons (PGNs) that were labeled by the FG injected into the pelvic nerve formed a ‘V’-shaped column known as the sacral parasympathetic nucleus (SPN) in the sacral IML. The neurons that were labeled by the WGA-HRP applied to the lateral parabrachial nucleus (PBL) formed an elongated spindle-shaped column extending throughout the IML of the sacral segments. We designated it by the name of sacral visceral sensory nucleus (SVSN). These findings indicate that the sacral IML of the cat contain two distinct subdivisions, SPN and SVSN.     

急性心肌缺血时红细胞变形性的变化及其机理

本实验观察了犬急性心肌缺血时体循环血与缺血区局部静脉血中红细胞变形性（ＲＣＤ）的变化。结果表明，阻断冠脉血流后高切变率下全血粘度（ηｂｈ）和红细胞刚性指数（ＥＲＩ）明显增高，而缺血区局部血液中此二者的变化明显大于体循环静脉血。事先切断内脏大神经，可使阻断冠脉后体循环血（而不是局部静脉血）的ηｂｈ和ＥＲＩ变化基本消失。缺血区局部血液ｐｈ和ｐＯ２明显降低，ｐＣＯ２明显增高，红细胞内ＡＴＰ含量减少和钙含     

胃癌组织内微血管定量的意义

目的：研究胃癌组织中微血管数量（MVC）与临床病理因素及预后的关系。方法：材料取自瑞金医院1988年～1991年胃癌手术切除标本，共128例。抗因子Ⅷ相关抗原（F-ⅧRAg）的单克隆抗体和免疫组化试剂盒购自Dako公司。研究方法按LSAB法免疫组织化学操作技术常规进行；微血管定量以镜下200倍，肿瘤内5个最高微血管密度区的MVC均数表示；分析MVC与临床病理因素之间关系，并对有完整5年随访资料的86例胃癌患者预后与MVC关系进行探讨。结果：所有胃癌组织中的平均MVC为16.5±8．5，MVC随TNM分期增加而增加，有淋巴结转移患者的MVC（18．3±8.7）明显高于无淋巴结转移患者（13．8±7．4）（P＜0．01），高MVC（≥16）胃癌患者比低MVC（＜16）患者预后明显为差，5年生存率分别为42.5％和58．7％（P＜0．05）。结论：MVC在胃癌患者是一个有意义的预后指标．     

7-甲氧基-4′-羟基-3′-二乙胺甲基异黄酮(MHDF)对大鼠血流动力学和主动脉的作用

本实验观察了MHDF对整体大鼠血流动力学和离体大鼠胸主动脉的作用。结果表明iv MHDF(3～12.8 mg/kg)能降低大鼠左心室±dp/dt_max,V_max,V_pm和LVSP,延长T-dp/dt_max,减慢心率。MHDF还能舒张大鼠胸主动脉,ED₅₀为6.5×10^-6mol/L;非竞争拮抗NA和CaCl₂致主脉收缩,pD₂′为3.11±0.21和3.73±0.07;抑制高K⁺致主动脉收缩,IC₅₀为1.76×10^-5mol/L。提示MHDF对血管的作用与α受体阻断剂不同,而可能与钙拮抗有关。     

自发性食管穿孔的治疗改进

报道７例自发性食管穿孔治疗经验，并对诊断和治疗和治疗新方法进行了讨论，自发性食管穿孔早期诊断的重要依据是迅速获得完整，详细的发病史。可疑时通过食道造影，胸腔穿刺刺液的分析而确诊。一经确诊应急取早期食管修补，对发病时间长，全身情况差的病人，经积极准备后仍应急取食管修补，对不宜手术者给予食管冲洗促进穿孔愈合。同时给予有效的食管腔内外引流。     

下蹲运动与高眼压关系及其动态观察

观察１８例３２眼下蹲运动与高眼压的关系，分为下蹲１２０次，１００次及８０次三且，每组分别观察１０眼、１１眼及１１眼，结果各组运动后眼压均见下降，平均为１．０２７±０．４８６ｋＰａ，１．３５５±０．７７０ｋＰａ及１．３２５±０．４２２ｋＰａ，运动前后有非常显著性差异，但各组之间差异不显著。同时观察３小时内眼压动态变化，下蹲１２０次组眼压下降维持时间最长，在运动后３小时与运动前眼压比较及与其余两组第３     

Analysis of Implantation in Assisted Reproduction Through the Use of Serial Human Chorionic Gonadotropin Measurements

Purpose: Our purpose was to examine implantation of singleton pregnancies achieved following various assisted reproductive technologies (ARTs) through the appearance and rising titers of serum human chorionic gonadotropin (hCG) levels. Methods: A total of 114 singleton pregnancies resulting from in vitro fertilization and intrauterine insemination was analyzed. Patients were divided into five groups according to the type of ovarian stimulation protocol [gonadotropin stimulation with/without the use of gonadotropin-releasing hormone agonist (GnRHa), long protocol, or flare-up technique] and to the day of embryo transfer (day 2 or day 3 after oocyte retrieval). Serial serum hCG levels were measured between 10 and 25 days after fertilization and log-transformed. Linear regression analyses were performed and extrapolated to hCG = 10 mIU/ml (hCG ₁₀ ), which was used as an estimate of detectable implantation. The slopes of the regression lines were used to estimate the rising speed of hCG. Results: There were no significant differences in the days of hCG in maternal serum to reach 10 mIU/ml (implantation) or in the slopes of the regression lines for all five studied groups. Conclusions: The appearance of hCG in maternal serum was used to assess the time of clinically detectable implantation. Furthermore, because hCG production is a marker of trophoblastic activity, its serum doubling time was used as an indicator of embryo quality. Results showed that in various ART protocols with and without GnRHa, there were no significant differences in implantation time or embryo quality. Embryo development in early pregnancy follows a preprogrammed-timing schedule and depends mainly on the embryonic age of the health, successfully implanted conceptus.     

气相色谱法测定复方丁香吸入剂中有效成分的含量

以正十一醇为内标，用程序升温填充柱ＧＣ法同时测定复方丁香吸入剂中的丁香酚、冰片及薄荷醇的含量。本法采用ＦＩＤ为检测器，色谱柱为１０％ＰＥＧ－２０ＭＣｈｒｏｍｏｓｏｂＷＡＷ－ＤＭＣＳ８０～１００目。２ｍ×４ｍｍ（Ｉ．Ｄ．）不锈钢填充柱，柱室温度程序为１４０℃（６ｍｉｎ）３℃／ｍｉｎ→１７５℃（１０ｍｉｎ）。样品用乙酸乙酯超声振荡提取３０ｍｉｎ，过滤后便可进样分析。