老年原发性高血压患者血压昼夜节律与靶器官损害临床观察

目的探讨老年原发性高血压患者血压昼夜节律与靶器官损害的关系.方法入选年龄≥60岁老年原发性高血压病患者150例,通过24小时动态血压监测了解其血压昼夜节律变化,根据血压昼夜节律监测结果为非杓型组(夜间平均血压较白昼平均血压下降值＜10%)78例,另一对照组为杓型72例.所有入选患者检查:超声心动图、颈动脉超声、肌酐清除率、尿微量白蛋白.结果非杓型组的尿微量白蛋白定量和左心室质量指数均高于杓型组(p＜0.01);非杓型组的颈动脉内膜厚度大于杓型组(P＜0.05);左室射血分数和肌酐清除率小于杓型组(P＜0.05).结论血压昼夜节律消失是老年原发性高血压患者靶器官损害的重要危险因素.     

肉苁蓉的本草考证

对历代本草记载的肉苁蓉和草苁蓉的原植物进行了考证,认为肉苁蓉的原植物为荒漠肉苁蓉Cistanche deserticola和盐生肉苁蓉C.salsa,草苁蓉为现今的列当Orobanche coerulescens,并对肉苁蓉的代用品和伪品进行了考证。     

牛蒡子苷元现代药理作用研究进展

ARC-G（牛蒡子苷元）为中药牛蒡子中常见的主要活性物质,通过众多学者的潜心钻研,使得ARC-G在药用方面的作用逐渐凸显出来。目前对其药理作用的研究比较深入,有抗炎及增强免疫力、抵御病毒、抗白血病、抑制肿瘤细胞活性和调节血糖等作用。已进行初步研究的药理活性包括抗菌、抵御血小板活化因子（PAF）受体、调节血压稳定以及对于心脏病的调节。本文综述了近几年关于牛蒡子苷元药理作用的文献,以期为更深入地研究ARC-G药理作用以及扩大其临床应用提供参考。     

灯盏花素对大鼠脑缺血再灌注后血管活性物质的影响

目的观察灯盏花素对大鼠急性脑缺血再灌注后血浆和脑组织ET、TXB2、6-keto-PGF1α含量的影响。方法选用Wistar大鼠制作Pulsinelli四血管阻断(4VO)脑缺血再灌注模型,以川芎嗪为对照,采用放射免疫法测定灯盏花素对大鼠脑缺血再灌注后血浆和脑组织ET、TXB2、6-Keto-PGF1α含量的影响。结果灯盏花素能显著降低脑缺血再灌注后血浆和脑组织ET、TXB2含量及TXB2/6-Keto-PGF1α比值。结论灯盏花素通过改变血管活性物质的含量从而对急性脑缺血再灌注损伤具有保护作用。     

扶桑花抗生育成分对早孕小鼠黄体影响的定量研究

本文处用图像分析仪 ,以核浆比和数密度为指标 ,研究了不同浓度的扶桑花提取物—HR 1对早孕小鼠黄本组织学的影响。结果表明 :(1)小鼠黄体细胞的核浆比和数密度 ,随给药剂量 (0、 4、 10、 10 0、10 0 0mg/kg/d)的增加而增加 ,其中 10 0和 10 0 0mg/kg/d两组的黄体细胞核浆比和数密度明显高于对照组(p <0 .0 5) ;(2 )黄体组织学的定性观察显示 ,给药各组的黄体细胞明显退化 ,细胞缩小 ,细胞界限不清。这些结果提示 ,扶桑花提取物的抗早孕作用与妊娠黄体受损有关。     

小儿麻醉医师迈向围术期医师理念的培养

随着现代医学的飞速发展,麻醉学正向围术期医学转变。培养小儿麻醉医师向围术期医师转变的理念,需要在了解儿童病理生理特点的前提下,重点培训小儿麻醉术前访视、术中麻醉相关技能、术后访视、围术期疼痛相关管理及心理创伤的预防与治疗。让患儿安全舒适地度过围术期、减少术后并发症及死亡率、改善远期预后,是每位小儿围术期医师的责任。     

Experimental Design,Equilibrium Modeling and Kinetic Studies on the Adsorption of Methylene Blue by Adsorbent: Activated Carbon from Durian Shell Waste

For the first time, activated carbon from a durian shell (ACDS) activated by H₂SO₄ was successfully synthesized in the present study. The fabricated ACDS has a porous surface with a specific surface area of 348.0017 m²·g⁻¹, average capillary volume of 0.153518 cm³·g⁻¹, the average pore diameter of 4.3800 nm; ash level of 55.63%; humidity of 4.74%; density of 0.83 g·cm⁻³; an iodine index of 634 mg·g⁻¹; and an isoelectric point of 6.03. Several factors affecting Methylene Blue (MB) adsorption capacity of ACDS activated carbon was investigated by the static adsorption method, revealing that the adsorption equilibrium was achieved after 90 min. The best adsorbent pH for MB is 7 and the mass/volume ratio is equal to 2.5 g·L⁻¹. The MB adsorption process of ACDS activated carbon follows the Langmuir, Freundlich, Tempkin, and Elovich isotherm adsorption model, which has determined the maximum adsorption capacity for MB of ACDS as q_max = 57.47 mg·g⁻¹. The MB adsorption process of ACDS follows the of pseudo-second-order adsorption kinetic equation. The Weber and Morris Internal Diffusion Model, the Hameed and Daud External Diffusion Model of liquids have been studied to see if the surface phase plays any role in the adsorption process. The results of thermodynamic calculation of the adsorption process show that the adsorption process is dominated by chemical adsorption and endothermic. The obtained results provide an insight for potential applications of ACDS in the treatment of water contaminated by dyes.     

Detection and Characterization of a Reassortant Mammalian Orthoreovirus Isolated from Bats in Xinjiang,China

Mammalian orthoreoviruses (MRVs) are increasingly reported to cause various diseases in humans and other animals, with many possibly originating from bats, highlighting the urgent need to investigate the diversity of bat-borne MRVs (BtMRVs). Here, we report the detection and characterization of a reassortant MRV that was isolated from a bat colony in Xinjiang, China. The BtMRV showed a wide host and organ tropism and can efficiently propagate the cell lines of different animals. It caused mild damage in the lungs of the experimentally inoculated suckling mice and was able to replicate in multiple organs for up to three weeks post-inoculation. Complete genome analyses showed that the virus was closely related to MRVs in a wide range of animals. An intricate reassortment network was revealed between the BtMRV and MRVs of human, deer, cattle, civet and other bat species. Specifically, we found a bat-specific clade of segment M1 that provides a gene source for the reassortment of human MRVs. These data provide important insights to understand the diversity of MRVs and their natural circulation between bats, humans, and other animals. Further investigation and surveillance of MRV in bats and other animals are needed to control and prevent potential MRV-related diseases.