单独肝尾状叶血管瘤切除术

肝尾状叶由于解剖位置特殊,位置深,难以显露,手术难度大,是肝脏外科领域手术操作的难点与研究热点.随着肝血流控制技术的发展、肝实质离断技术的提高,肝尾状叶肿瘤切除率明显提高[1].2006年4月至2008年10月,我科完成单独肝尾状叶血管瘤切除术9例,现将手术技巧与疗效报道如下.     

摇抖手法整复桡骨头半脱位93例

桡骨头半脱位是5岁以下小儿常见的一种肘部损伤，当小儿前臂被突然提拉后容易造成桡骨头半脱位，俗称“牵拉肘”。自2003年1月至2006年12月，采用摇抖手法整复了93例桡骨头半脱位患儿，现总结报告如下。     

单独肝尾状叶血管瘤切除术

Isolated resection of bemangioma in the cau-date lobe is challenging due to the surgical anatomy of caudate lobe. The caudate lobe consists three portions: Spiegel's lobe, paracaval portion and caudate process. Most of the blood supply of caudate lobe is provided by the posterior segmental branches of the portal vein and left hepatic artery. The hepatic venous drainage encompasses a few sizable and several small branches that join the inferior vena cava. Selection of the ideal route for bepatectomy, adequate mobilization of the liver, preparatory placement of band for hepatic vascular occlusion are key factors during the operation.     

早产儿早期振幅整合脑电图特点的分析

目的 探讨早产儿早期振幅整合脑电图(aEEG)背景波的活动特点,为早产儿脑成熟度的判断提供一定的参考。方法 选取胎龄为25~36+6周早产儿160例为研究组,根据胎龄分为＜28周组,28~30+6周组,31~33+6周组,34~36+6周组4个组;无颅脑疾病的足月新生儿40例为对照组。应用Olympic CFM 6000在两组新生儿出生后72h内进行脑功能监测。分析指标包括电压的连续性、睡眠周期、波谱带下界振幅值及宽度、一个睡眠周期的时程。将早产儿不同胎龄组结果进行对比分析,并分别与对照组结果进行对比分析,比较不同胎龄早产儿aEEG背景波活动的特点。结果 随着胎龄的增加,研究组aEEG背景波中连续性电压所占的比例逐渐增大(P＜0.01),而对照组均呈连续性图形,两组间差异有统计学意义(P＜0.01);研究组周期出现率逐渐增加(P＜0.01),对照组均出现成熟的周期变化,两组间差异有统计学意义(P＜0.05);随着胎龄的增加,波谱带下界振幅有升高趋势,早产儿各胎龄组间比较,下界振幅值在活动睡眠(AS)期差异有统计学意义(P＜0.01);带宽趋于变窄,早产儿各胎龄组间差异有统计学意义(P＜0.01);一个睡眠周期的时程趋于变短,早产儿各胎龄组间差异有统计学意义(P＜0.01);早产儿各胎龄组相关值分别与对照组比较,差异有统计学意义(P＜0.05)。结论 胎龄越大的早产儿,其aEEG背景波越趋于成熟,说明aEEG能够较好的反映早产儿的脑成熟度,应用于临床早产儿脑功能的监测。     

紫暗舌与舌血流关系的研究

目的探索紫暗舌与舌血流的关系.方法运用激光多普勒血流仪分别对56例紫暗舌及54例正常舌从舌面多部位测试舌血流灌注量及流速,同时进行对照分析. 结果紫暗舌组患者的舌血流灌注量明显低于正常舌组(P ＜0.01),而流速明显增快(P ＜0.01).舌体各部位(舌尖、舌中、舌边)之间的舌血流灌注量及流速参数接近,无统计学差异. 结论紫暗舌患者舌血流灌注量降低、流速增快.舌微循环障碍可能是紫暗舌形成的主要因素之一.     

连续性血液净化治疗伴有肾功能衰竭的多器官功能衰竭

目的:探讨连续性血液净化(CBP)治疗伴有肾功能衰竭的多器官功能衰竭(NODS)的疗效。方法:回顾性分析52例经CBP治疗的合并肾功能衰竭的MODS患者临床资料。结果:CBP清除了患者的尿毒症毒素,较快纠正水、电解质、酸碱平衡失调,使血压回升,中心静脉压下降,52例患者总死亡率42.31%,病死率与脏器衰竭数目相关,3个以上器官衰竭病死率近87.5%。结论:CBP能明显改善伴有肾功能衰竭的MODS患者的血液动力学及血液生化指标,降低2~3个器官衰竭患者的病死率。     

Angiotensin-converting enzyme 2 as a potential therapeutic target for COVID-19: A review

As of August 16, 2021, there have been 207,173,086 confirmed cases and 4,361,996 deaths due to the coronavirus disease (COVID-19), and the pandemic remains a global challenge. To date, no effective and approved drugs are available for the treatment of COVID-19. Angiotensin-converting enzyme 2 (ACE2) plays a crucial role in the invasion into host cells by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the etiological agent of COVID-19. Notably, ACE2 density is influenced by medical conditions, such as hypertension, or by drugs, including angiotensin-converting enzyme inhibitors (ACEIs) and angiotensin receptor blockers (ARBs), which can change the fate of SARS-CoV-2 infectivity. ACE2 is a target for these drugs and can be manipulated to limit the viral entry and replication within the cells. Different strategies aimed at blocking ACE2 with small molecules, peptides, and antibodies, or by neutralizing the virus through its competitive binding with human recombinant soluble ACE2 (hrsACE2) are currently under investigation. In this article, we review the current state of knowledge that emphasizes the need to find effective therapeutic agents against COVID-19 by exploiting ACE2 as a potential target. The increased soluble ACE2 levels and the application of hrsACE2 in patients with COVID-19 can be implemented to control the disease. It has not yet been established whether hypertension and other comorbidities, independent of age, have a direct role in COVID-19. Therefore, the use of renin-angiotensin system inhibitors, ACEIs and ARBs, should not be discontinued during COVID-19 treatment.     

Identification of calmodulin-dependent protein kinase III and its major Mr 100,000 substrate in mammalian tissues.

A major substrate, Mr 100,00 (100 kDa), for a Ca2+/calmodulin (CaM)-dependent protein kinase found in many mammalian tissues has been purified from rat pancreas. The purified substrate was used to identify and partially purify a CaM-dependent protein kinase (CaM kinase III) from rat pancreas. The physical properties and substrate specificity of CaM kinase III were distinct from those of all known CaM-dependent protein kinases. Only CaM kinase III was able to phosphorylate the 100-kDa protein; synapsin I, phosphorylase b, myosin light chain, and histone were poor substrates for this enzyme. Polyclonal antibodies, raised against the purified 100-kDa protein, recognized the protein in a variety of mammalian tissues and cell lines. Immunoassay revealed that the 100-kDa protein made up 0.3-1.7% of the total cytosolic protein in these samples. Analysis of CaM kinase III revealed that the enzyme had a similar widespread tissue distribution. These results demonstrate the existence of a fifth CaM-dependent protein phosphorylation system present in high levels in animal cells.     

Survivin在宫颈癌及癌前病变组织中的表达及意义

目的: 探讨Survivin原位杂交表达在宫颈癌及癌前病变诊断中的应用效果.方法: 选取45例宫颈癌患者病理组织为观察组,宫颈上皮内瘤变组织45例为对照1组,正常宫颈组织45例为对照2组.入试者均行Survivin原位杂交检测.结果: Survivin在对照2组、对照1组、观察组阳性率分别为2.2%、48.9%和84.4%,差异均有统计学意义(P<0.01).Survivin在宫颈癌Ⅰ期、Ⅱ期和Ⅲ期中的阳性率,在宫颈癌高分化组、中分化组及低分化组中的阳性率和在宫颈癌伴淋巴结转移组与不伴淋巴结转移组中阳性率差异均无统计学意义(P>0.05).结论: Suvrvini在宫颈癌及癌前病变的发生发展中发挥一定作用,可作为宫颈癌预后不良的标志之一.