生产车间的蟑螂侵害率及防制措施研究

本文对上海市区35个生产车间的蟑螂侵害率进行调查,观察到生产性车间有黑胸大蠊及美洲大蠊两种,侵害率达58.85%。在20个有蟑螂的车间内都有黑胸大蠊栖息,平均密度10.65只/m~2;而美洲大蠊仅见于8个车间,聚集性较强,平均密度达38.50只/m~2。对较干燥车间或地下室用1%乙酰甲胺磷糖水毒杀蟑螂,24h杀灭率达95.89%。     

Eyelid movements during blinking in patients with Parkinson's disease.

We examined eyelid movements during spontaneous, voluntary, and trigeminal reflex blinks in 16 patients with mild to moderate Parkinson's disease (PD) off medication and 14 controls. Voluntary and reflex blink amplitudes tended to be smaller than normal for PD patients, whereas eyelid kinematics (amplitude-maximum velocity relationship) for all three blink types were normal. Spontaneous blink rate was less than normal for 10 patients and abnormally high for 6 patients. A significant positive correlation between spontaneous blink amplitude and blink rate was found. These observations suggest that PD modifies the gain of a premotor blink circuit shared by spontaneous, voluntary, and reflex blinks.     

进展期胃癌术后辅助性化疗的10年随访结果

报告１０２例进展期胃癌术后患者，随机进行３组不同化疗方案并经平均随访１０．７年的结果。所有病例均为１９８３年５月到１９８５年５月间手术者。术后随机给予单一５－ＦＵ、５－ＦＵ＋ＣＣＮＵ和ＭＴＸ＋ＭＭＣ＋５－ＦＵ三组不同化疗。随访至１９９４年１２月止，死亡７７例，存活２５例。结果３、５和１０年总生存率分别为４２．１％；２９．４％和２４．５％。三组间比较，总自下而上率并无显著差异（Ｐ〉０．０５），但中位     

玉溪市农村室内鼠类及其体外寄生蚤类调查

笔者于１９９２年２月至１９９３年１月，在玉溪市两个自然村室内进行了鼠类及体外寄生蚤类调查研究。鼠类年均捕获率７．２５％；褐家鼠为优势种，占７３．４９％，捕获率高峰期在９月；黄胸鼠和小家鼠为常见种，捕获率高峰期分别在３和４月。３种家鼠年龄孕鼠率为１４．５７％，平均胎仔数为７．３只，１０月为全年生殖高峰。     

微囊化吲哚美辛片剂的研讨

以明胶-CAP 为囊材,经复凝聚法制备吲哚美辛微囊,再按所筛选的最佳处方制备微囊化片剂。该片与市售片相比,体外 T_(50)延长约5.6倍,家兔体内达峰时间滞后,能明显减轻对大鼠胃的刺激性。     

Development of computer-assisted simulation procedure to analyze receptor modulatory processes

Summary Experimentally induced changes in neurotransmitter receptors have been analyzed by means of a computer assisted simulation procedure over a wide range of free ligand concentrations. This approach allows to evaluate, for a given range of ligand concentrations, the relative influence of simultaneous variations in binding parameters (i.e. dissociation constant or K_d and in maximal number of binding sites or B_m) and to predict the net and final effect of the experimental condition on the receptor-mediated transmission line. The function representing the changes in bound values versus the respective free ligand concentrations, has been studied analytically on the basis of all the possible values that the percent changes in both K_d and B_m parameters induced by a given experimental condition can assume. A well characterized change in the pattern of bound radioligand could in this way be defined. This approach, developed to show in an immediate and clear way treatment-induce changes in receptor populations or to fit directly rough experimental data expressed as differences in bound values versus free ligand concentrations, seems to be an useful complement to the widely used saturation analysis of binding data.     

文拉法辛与三环类抗抑郁药治疗抑郁症痊愈率的循证医学研究

目的　比较文拉法辛与三环抗抑郁药治疗抑郁症临床痊愈率的差异。方法　应用循证医学的Me-ta分析,采用固定效应模型(fixed effects model,FEM)法对符合标准的16项对照研究文献进行评价。结果　文拉法辛与三环抗抑郁药治疗抑郁症的临床痊愈率不同,差异有显著性(χ2=4.773,df=1,P<0.05);综合的ORs=1.36,95%CI为1.04~1.78。提示文拉法辛治疗抑郁症的临床痊愈率是三环抗抑郁药的 1.36倍。结论　治疗抑郁症,文拉法辛比三环抗抑郁药有更可靠的临床痊愈率。     

精子形态变化对体外受精率的影响

目的:通过对ICSI和IVF受精率的统计,比较精子形态中的精子正常形态率、头部畸形率、畸形精子指数(TZI)和精子畸形指数(SDI)对受精结果的影响。方法:用Krger's严格标准法分别计算每组样本的精子正常形态率、头部畸形率、TZI和SDI值,与受精率进行比较。结果:①IVF组和ICSI组的受精率,与精子正常形态率、头部畸形率、TZI、SDI均无相关性。②IVF组和ICSI组中SDI>1.6和SDI<1.6的受精率、优质胚胎率和临床妊娠率差异均无统计学意义(P>0.05)。③IVF组和ICSI组中精子正常形态率≤15%与精子正常形态率>15%的二组间受精率、优质胚胎率和临床妊娠率的差异均无统计学意义(P>0.05)。结论:精子形态在体外受精时对受精率无影响,不能用精子形态来直接评价体外受精的结果。     

Ventricular rate smoothing for atrial fibrillation: a quantitative comparison study.

AIMS: To quantitatively compare the ventricular rate-smoothing (VRS) effects of different ventricular pacing (VP) protocols for atrial fibrillation (AF). METHODS AND RESULTS: Using a recently developed open-source model that can simulate the ventricular response in AF and VP, the performance of fixed-rate pacing and four previously published VRS algorithms were assessed by the mean RR (mRR), the root mean square of successive RR differences (RMSSD), the percentage of ventricular senses (VS%), and the percentage of short RR intervals (sRR%). All pacing protocols cause rate-dependent reduction of RMSSD, VS%, and sRR% with or without shortening of mRR compared to spontaneous AF. Fixed-rate pacing was more sensitive to the intrinsic rate than the VRS algorithms. The performance was generally comparable between different VRS algorithms, although higher mRR and VS% can be achieved at the expense of larger RMSSD and sRR%. CONCLUSION: The effect of VP on ventricular rhythm in AF depends on both intrinsic rate and the aggressiveness of the pacing protocol. Adequate rate control is necessary for effective operation of the VRS algorithm. Choosing VRS algorithm should balance between the beneficial effects of rate regularization and the negative effects of increasing heart rate and percentage of VP.