实验性吸烟对胎鼠及幼鼠血清IGF-Ⅰ的影响

目的用被动吸烟法建立宫内被动吸烟胎鼠及宫内至断乳前持续被动吸烟幼鼠动物模型 ,比较不同浓度香烟暴露对胎鼠及幼鼠血清IGF -Ⅰ的影响。　方法SD雌鼠于交配后第 2d ,入低、中、高三种香烟浓度的被动吸烟箱中 ,每日 5h ,孕 2 1d剖宫取胎 ,收集胎鼠血清 ;或待孕鼠自然分娩 ,幼鼠置于与宫内相同香烟浓度的被动吸烟箱中 ,每日 5h ,至 2 1d断乳 ,取幼鼠血清。　结果不同浓度香烟暴露对胎鼠血清IGF -Ⅰ的影响无显著差异 ,随香烟浓度增高幼鼠血清IGF -Ⅰ呈下降趋势 ,高浓度组与对照组间差异显著。　结论宫内至断乳前持续被动吸烟降低幼鼠血清IGF -Ⅰ水平 ,随香烟浓度增高 ,差异显著。     

小体重先天性心脏病患儿的体外循环管理

目的：回顾我院16例小体重先天性心脏病患儿的体外循环(CPB)状况,总结其灌注技术。方法：对我院1995-1996年的16例小体重先天性心脏病患儿临床资料及CPB情况(人工心肺机类型、预充液组成、CPB操作步骤、CPB时间、升主动脉阻断时间、心肌保护等)做一回顾性总结。结果：16例患儿。年龄5个月。2岁,平均1．2岁;体重4.5-9.5kg,平均8．2kg。CPB时间32-284min(平均92min),升主动脉阻断时间14-121min(平均64min)。冷晶体高钾停搏液经滚压泵自主动脉根部间断灌注较好的保护了心肌。结论：适宜的血液稀释,根据不同疾病选择正确的灌注方法,良好的术中管理及心肌保护,可有效的使小体重先天性心脏病患儿在CPB中平稳过渡,减少术后的并发症和死亡率。     

新三联疗法治疗幽门螺杆菌阳性十二指肠溃疡的对照研究

目的：探讨硫糖铝新三联疗法治疗幽门螺杆菌（ＨＰ）阳性十二指肠溃疡的疗效和安全性。方法：将ＨＰ阳性十二指肠溃疡患者随机分为３组：Ａ组（ｎ＝４５）和Ｂ组（ｎ＝４２）分别接受硫糖铝＋呋喃唑酮＋兰索拉唑和胶体铋剂＋阿莫西林＋甲硝唑治疗,Ｃ组（ｎ＝４３）接受呋喃唑酮＋兰索拉唑治疗,疗程均为２周。停药４周后复查胃镜,了解ＨＰ根除率和溃疡愈合率,并随访１年。结果：停药４周后Ａ组、Ｂ组、Ｃ组ＨＰ根除率和溃疡愈合率     

宫内外同时妊娠一例

宫内宫外同时妊娠是极为罕见的一种异位妊娠,我院于１９９７年１０月收治１例,报告如下。唐某,女,３０岁,已婚,孕２产１。因停经４３ｄ,下腹痛４ｈ于１９９７年１０月２９日下午１时急症入院。患者平时月经规则,末次月经为１９９７年９月１６日,停经４０ｄ后开始...     

中药壮骨胶囊治疗Ⅰ型原发性骨质疏松症74例临床研究

目的　探讨中药壮骨胶囊对Ⅰ型原发性骨质疏松症的疗效及其与骨代谢的关系。方法　采用益肾健脾的中药壮骨胶囊治疗７４ 例绝经后妇女原发性骨质疏松症,并与钙尔奇Ｄ 治疗的３１ 例作对照。结果　３ 个月后,其总有效率达９１ ．８９ ％ ,骨质疏松程度、血ＡＬＰ、ＣＴ、Ｅ２ 皆显著改善,且显著优于对照组（ Ｐ＜ ０．０５ ～０．０１）。无明显副反应。结论　绝经后妇女骨质疏松症主要由肾虚所致,采用中药补肾健脾治疗,疗效显著优于补钙、雌激素的替代疗法等。壮骨胶囊有调整骨代谢作用。该药安全可长期服用     

Alterations in synaptic proteins and their encoding mRNAs in prefrontal cortex in schizophrenia: a possible neurochemical basis for 'hypofrontality'

An impairment of prefrontal cortical functioning in schizophrenia ('hypofrontality') has been suggested by clinical, neuroimaging, and postmortem brain tissue studies. We used Western immunoblot and Northern hybridization analyses of postmortem brain tissue obtained from 14 schizophrenic patients and 12 control patients of similar ages to measure tissue levels of synaptophysin (a structural synaptic vesicle protein) and of SNAP-25 (a 25-kDa presynaptic protein), and their encoding mRNAs, in Brodmann's area 10 of prefrontal cortex. There were significant decreases in tissue levels of both of these proteins in prefrontal cortex of schizophrenic patients relative to controls. In contrast, tissue levels for the mRNAs encoding these proteins were not decreased in schizophrenic patients. Subsequent labeling of the same Western immunoblots showed no difference in tissue levels of glial fibrillary acidic protein (GFAP) in schizophrenic and control patients. Similarly, subsequent hybridization of the same Northern hybridization membranes showed no difference in tissue levels of GFAP mRNA or of 28S rRNA in schizophrenic and control patients. These alterations in tissue levels of synaptophysin and SNAP-25 are consistent with the idea that the clinically observed 'hypofrontality' of schizophrenia arises from abnormalities of synaptic number or structural integrity in prefrontal cortex.     

一种用电容式传感器检测呼吸度的方法

目的介绍一种操作简单而成本低廉的呼吸率检测方法。方法 采用高灵敏度电容传感器,以及相应的检测系统,可以对呼吸活动进行检测。结果在一般左胸上部大部分位置均能得到较为满意的信号。结论应用前景广泛,可用于构成多参数监护仪中的呼吸模块,亦可用来检测呼吸波。     

Effects of RSR13, a synthetic allosteric modifier of hemoglobin, alone and in combination with dizocilpine, on outcome from transient focal cerebral ischemia in the rat

This study examined the effect of a pharmacologically induced rightward shift in the partial pressure of oxygen at which 50% of hemoglobin is saturated (P50) on outcome from transient focal cerebral ischemia in the rat. Halothane anesthetized rats (n=20 per group) were given saline or a single 15-min infusion of 150 mg/kg RSR13 (2-[4-[[3,5-dimethylanilino) carbonyl]methyl]phenoxy]-2-methylproprionic acid) intravenously before or 30 min after onset of 75 min of middle cerebral artery filament occlusion (MCAO). Seven days later, severity of hemiparesis and cerebral infarct size were examined. RSR13 alone did not significantly improve outcome. Conscious normothermic rats (n=12 per group) were also given RSR13 (150 mg/kg) or 0.9% NaCl intravenously and subjected to 75 min of MCAO with 7 days of recovery. Again, RSR13 alone did not significantly reduce infarct size or improve neurologic score. A dose-response curve for dizocilpine (MK-801) was then constructed in conscious normothermic rats subjected to 75 min of MCAO. Dizocilpine (0.5 mg/kg i.v.) caused a 90% reduction in mean infarct size while 0.25 mg/kg reduced infarct size by 48%. Other rats were then subjected to 75 min of MCAO after being given dizocilpine (0.25 mg/kg i.v.; n=18) or RSR13 (150 mg/kg i.v. )+dizocilpine (0.25 mg/kg i.v.; n=15). RSR13+dizocilpine resulted in smaller cortical infarct volume (8+/-14 mm3 vs. 34+/-37 mm3, p<0.02) and total cerebral infarct volume (46+/-28 mm3 vs. 81+/-60 mm3, p<0. 05) compared to dizocilpine alone, respectively. We conclude that a pre-ischemic peak increase in P50 of approximately 25 mmHg alone is insufficient to reduce focal ischemic injury, but may be advantageous when used in conjunction with other neuroprotective agents.     

Mechanism of action of amiloride: a molecular prospective

Amiloride is a prototypic inhibitor of epithelial sodium channels. Rapid progress has been made in our understanding of the structure of the sodium channel and related cation-selective channels. This work, coupled with experiments examining how selected sodium channel mutations affect amiloride binding, provides critical clues towards defining sites within the channel that bind amiloride. Residues within the channel pore and within its extracellular domain participate in amiloride binding. These results suggest that sites that interact with amiloride within the channel's extracellular domain may be in close proximity to residues within the channel's pore.     

内毒素休克大鼠组织生物喋呤及其合成限速酶基因表达的改变

目的 了解内毒素休克时重要器官生物喋呤及其合成限速酶基因表达的改变和病理生理意义。方法 采用大鼠内毒素休克模型,检测肝,肾,肠等组织生物喋呤含量,三磷酸鸟苷环水解酶Ｉ（ＧＴＰ－ＣＨＩ）ｍＲＮＡ表达及器官功能指标等。并观察内毒素拮抗剂－重组杀菌／通透性增加蛋白（ｒＢＰＩ２１）的防治效果。结果 内毒素休克动物肝,肾,肠等组织生物喋呤含量明显增多,伤后８小时升高幅度尤为显著（Ｐ〈０．０５,Ｐ〈０．０１０