Role of specific adrenergic and cholinergic receptors of the blood vessel wall in the regulation of blood clotting during stimulation of the vagus nerve

Experiments on dogs showed that if the specific adrenergic receptors of the blood vessel wall (- and -receptors) were blocked by phentolamine or inderal it still continued to produce tissue blood clotting factors after stimulation of the vagus nerve. No response of this type was observed to stimulation of the nerve after the cholinergic receptors had been blocked by atropine. It is concluded that hyperfibrinolysis and hypercoagulation developing after vagus nerve stimulation are due to excitation of cholinergic structures.Department of Normal Physiology, Chita Medical Institute. (Presented by Academician of the Academy of Medical Sciences of the USSR A. N. Filatov.) Translated from Byulleten' Éksperimental'noi Biologii i Meditsiny, Vol. 78, No. 8, pp. 19–22, August, 1974.     

强迫症患者认知功能与病期的关系

目的：探讨强迫症的认知功能障碍与病期的关系。方法：分别用韦氏记忆测验，数字划销测验和威斯康星卡片分类测验评估25例急性强迫症和36例慢性强迫症患者的记忆、注意和执行功能。结果：急性强迫症患者的记忆测验中记图和数字划销测验中第二阶段失误率显著性较慢性强迫症差，其余两组间记忆测验、划销测验和威斯康星卡片分类测验各量表分无显著性差异。结论：强迫症的认知功能与病期无明显相关。     

知识模式转换在医学科技创新中的作用

医学科技创新是医院赖以生存与发展的动力,医学科技创新的过程也是医学知识模式不断转换的过程,本文从知识模式转换的视角,探讨知识管理对医学科技创新的意义与作用     

Effects of priming duration on retention over the first 1 1/2 years of life

Exposing individuals to an isolated component (a prime) of a prior event alleviates its forgetting. Two experiments with 120 human infants between 3 and 18 months of age determined the minimum duration of a prime that can reactivate a forgotten memory and how long the reactivated memory persists. Infants learned an operant task, forgot it, were exposed to the prime, and later were tested for renewed retention. In Experiment 1, the minimum duration of an effective prime decreased logarithmically with age, but was always longer than the duration of a mere glance. In Experiment 2, the reactivated memory was forgotten twice as fast after a minimum-duration prime as after a full-length one, irrespective of priming delay and infant age. These data reveal that the minimum effective prime duration psychophysically equates the accessibility of forgotten memories. We conclude that priming is perceptually based with effects that are organized on a ratio (log) scale.     

红霉素缓释微囊的制备及其释药机理的研究

本文旨在探讨红霉素微囊的制备及体外缓释机理。以明胶等为囊材,用红霉素制成微囊,研究微囊的厚度及孔隙度对药物释放速率的影响。进行理论分析,与实验结果相符性较好。     

以骨间背侧动脉为蒂逆行岛状皮瓣的应用解剖学

在60侧灌注血管染料的新鲜成人上肢标本上,观察了骨间背侧血管在前臂背侧的起点、走行和分支,发现该动脉终末支在腕上2.5cm 水平,与骨间掌侧动脉背侧支之间有恒定的吻合支相连,并以此吻合支为蒂,设计了前臂骨间背侧血管逆行岛状皮瓣。     

人胰岛微血管和A细胞的微机三维重建

采用微机辅助三维重建的方法重建了人胰岛的微血管的A细胞，结果表明，所使用的软件重建速度快，图像速真，清晰度高，视觉效果好，可对重建物体进行多角度，多轴旋转，也可进行任何部位的切割，以便能进一步了解胰岛内各结构的详细情况，为进一步研究胰岛内微血管和细胞的立体位置关系提供方法学基础。     

Studies on subcutaneous fat necrosis of the newborn

Summary Biopsy specimens from the skin and subcutaneous fat tissue of four cases with neonatal subcutaneous fat necrosis were made and investigated by light and electron microscopy at 2, 4, and 6 weeks, and 5 months (Case 2) from the onset of the disease. Three stages of ultrastructural change of fat cells were observed. The evolution of crystal formation in the fat cells was seen and phagocytosis of crystals and fat droplets by macrophages and foreign-body giant cells was also noted. In the light microscope accumulation of calcium concretions in the spaces between and inside the fat cells was found. In the electron microscope we detected foci of highly electrondense granules, which were similar in distribution and structure to calcium salts stained with the von Kossa method. Changes in small and medium size blood vessels were observed.This work was written during a stay supported by Max-Planck-Gesellschaft from Dec. 1. 1973 to March 31. 1975 in the Max-Planck-Institut für Klinische und Physiologische Forschung (W.G. Kerckhoff-Institut), Bad Nauheim, West Germany (Director: Prof. Dr. Wolfgang Schaper)