王不留行对家兔离体主动脉环张力的影响及其机制

目的:研究王不留行水煎液(DSC)对兔离体主动脉环张力的影响及其机制.方法:采用家兔离体主动脉环张力记录法.结果:DSC可浓度依赖性地引起动脉血管静息张力的增加.用10-7mol/L酚妥拉明、10-5mol/L异搏定、10-6mol/L苯海拉明或无钙K-H液温育后均可明显减弱DSC的收缩作用;而去除内皮细胞后,10-7mol/L阿托品则无明显影响.结论:DSC可引起主动脉环收缩,其机制可能与平滑肌细胞上的肾上腺素能α受体、异搏定敏感的Ca2 通道、细胞外Ca2 以及组胺H1受体有关,而与血管内皮细胞和胆碱能M受体无关.     

Phacoemulsification in eyes with corneal opacities after deep anterior lamellar keratoplasty

To evaluate the maneuverability and efficacy of phacoemulsification and intraocular lens (IOL) implantation in eyes with corneal opacities after deep anterior lamellar keratoplasty (DALK), twelve eyes of 12 patients with mild to moderate corneal opacities after DALK and coexisting cataracts were analyzed retrospectively. Phacoemulsification and IOL implantation assisted with anterior capsule staining, as well as non-invasive optical fiber illumination, were performed on all eyes. No intraoperative or postoperative complications were noted. Mean corrected distance visual acuity (logMAR) improved from 1.24±0.17 to 0.73±0.22. Post-phaco intraocular pressure was maintained between 13 to 20 mm Hg in all cases throughout the follow-up period. Mean endothelial cell density decreased from 2258.42±205.94 to 1906.25±174.23 cells/mm2. Phacoemulsification and IOL implantation are safe and valid in eyes with mild to moderate corneal opacities after DALK and coexisting cataracts when assisted with anterior capsule staining and non-invasive optical fiber illumination.     

2020年儿童口腔从业医师的调查与分析

目的:对我国儿童口腔从业医师进行调查,为制订儿童口腔医师培养计划提供依据。方法:本研究采用问卷调查方法。2020年,选择中华口腔医学会儿童口腔医学专业委员会会员作为研究对象。调查内容包括医师基本信息、工作状况、临床治疗情况、预防保健和继续教育等,并对结果进行分析。结果:21岁至40岁儿童口腔医师占比79.3%(797/...     

脑梗死患者血清高敏C反应蛋白的变化及临床意义

目的探讨脑梗死患者血清高敏C反应蛋白(hsCRP)含量的变化及其临床意义。方法随机选择57例脑梗死患者,检测其高敏C反应蛋白的血清水平。观察脑梗死不同病情含量变化,并分析与患者临床神经功能缺损程度评分的相关性。结果脑梗死患者的血清hsCRP水平明显高于正常对照组(P<0.01)。脑梗死不同临床分型组间血清hsCRP水平比较,重型组明显高于中型、轻型组,差异均有统计学意义(P<0.01)。脑梗死患者血清hsCRP含量与临床神经功能缺损程度评分呈正相关(r=0.255,P<0.05)。结论血清hsCRP水平增高与脑组织受损程度有密切关系。hsCRP升高可能是脑梗死发病的一个危险因素。hsCRP升高对治疗及估计预后有指导意义。     

The altering in sensory sensitivity: a current issue of female breast surgery

Breast surgery is an important treatment for women with malignant breast diseases. In addition to breast appearance, the integrity of breast function is increasing in patients with breast diseases. As the basis of breast physiological function, breast skin sensitivity is important to the quality of life of patients after surgery. Breast skin sensitivity gives the patient a “real” breast feeling. The sensory recovery after breast surgery has also become one of the important goals of breast surgery. In this review, we aim to discuss the research progress on recovery of breast skin sensitivity after different treatment modalities for breast disease.     

中药丹参、川芎嗪防治脑缺血实验研究

目的：研究丹参、川芎嗪对沙土鼠脑缺血及脑水肿的作用。方法：将120只沙土鼠分为6组,分别给药,处死后即刻称量脑重,与体重相比计算出脑指数。部分样本取脑,进行石蜡包埋、切片、HE染色处理,然后进行病理观察。结果：静脉给药组的生存时间延长,脑指数降低。沙土鼠静脉注射伊文兰后,毛细血管通透性明显降低,与对照组相比有显著性差异。病理检查发现,给药组沙土鼠脑组织缺血的病理变化较轻。结论：丹参及川芎嗪能抑制脑内毛细血管通透性升高,对沙土鼠的脑缺血具有预防及治疗作用。     

损毁嗅球对血管性痴呆大鼠学习记忆功能的影响

目的 探索损毁嗅球对血管性痴呆(VD)大鼠学习记忆功能的影响.方法 制作VD及其损毁嗅球大鼠模型,测试大鼠水迷宫学习记忆能力.结果 定位航行试验显示,6 d平均逃避潜伏期比较,嗅球损毁模型明显短于VD模型组(P<0.01),嗅球损毁后VD造模组显著长于VD模型组(P<0.01),VD造模后嗅球损毁组略长于VD模型组(P<0.05).空间探索试验显示,原平台象限跨越相应平台的次数比较,VD模型组、VD造模后嗅球损毁组、嗅球损毁后VD造模组均明显少于嗅球损毁模型组(P<0.01);VD模型组与VD造模后嗅球损毁组之差异无显著性意义(P>0.05);而VD模型组与嗅球损毁后VD造模组之差异有显著性意义(P<0.05).结论 单纯损毁嗅球能够降低正常大鼠的学习记忆功能,但尚不能达到痴呆程度.如果损毁嗅球后再附加脑缺血因素,则显著降低大鼠学习记忆功能,由此加重了痴呆的程度;如果在脑缺血后再行损毁嗅球,则未见明显降低大鼠学习记忆功能.