ACE抑制剂卡托普利对实验性围手术期心肌缺血的影响

目的:图手术期心肌缺血主要是因为应激引起冠状动脉内皮功能障碍所致,所以观察卡托普利对其影响。方法:杂种犬20只均分为4组:Ⅰ组(对照组),Ⅱ组(心肌梗塞模型组),Ⅲ组(心梗 胃大部切除术)和Ⅳ组(心梗 卡托普利 胃大部切除术)。心梗2周后行胃大部分切除术,测定Ⅲ、Ⅳ两组的基础状态、术前和术后的血流动力学指标、血浆内皮素(ET)及一氧化氮(NO)。用组织原位杂交方法观察4组非梗塞区冠脉内皮-氧化氮合酶(NOS)mRNA表达水平。结果:在Ⅲ组,手术使LV dP/dt_(max)、心脏指数(CI)及NO下降,引起LVEDP、PCWP、总外周阻力(TPR)、左室舒张压力下降时间常数(T值)和ET升高。在Ⅳ组,用卡托普利后40min,TPR下降,T值升高;手术使血流动力学指标回降,不影响其它指标。组织原位杂交示,NOS mRNA在Ⅰ组高度表达,Ⅱ组和Ⅳ组次之,Ⅲ组最低。结论:卡托普利能预防胃大部切除术引起的左室舒缩障碍和冠脉内皮功能障碍。     

Intraspinal synovial cysts: MR imaging

Juxtaarticular intraspinal synovial cysts are unusual lesions of the spine associated with facet arthropathy. These lesions can cause radicular symptoms and may masquerade clinically as other, more common entities. Synovial cysts have been detected at myelography and have been well characterized at computed tomography as posterolateral epidural masses, typically at L4-5. Six synovial cysts of the lumbar spine were demonstrated on magnetic resonance (MR) images. The signal-intensity patterns of these lesions are variable. MR imaging can be used to document the presence of hemorrhage within the cyst, which may relate to the exacerbation of symptoms. Air-filled synovial cysts may be difficult to detect and distinguish from facet arthropathy.     

Corpus callosum and limbic system: neuroanatomic MR evaluation of developmental anomalies

Agenesis of the corpus callosum is a complex malformation of the brain that has been associated with varying degrees of limbic system maldevelopment. We retrospectively reviewed the records of 11 patients with callosal agenesis (seven total, four partial) who underwent magnetic resonance (MR) imaging, with particular attention to the associated malformations of the limbic system. Comparison was made with selected images from MR examinations of healthy volunteers and with necropsy specimens from other patients with callosal agenesis. Ten of 11 patients demonstrated limbic anomalies (severe motion artifact precluded evaluation of these structures in one patient). MR depicted not only the abnormalities intrinsic to callosal agenesis but also the frequently associated malformations of the limbic system.     

蛇床子有效成份的提取与检测

目的：寻找理想的蛇床子有效成份的提取方法。方法：改进经典的提取方法，并采用荧光薄层析谱检测提取物进行方法学评价。结果：蛇床子总香豆素得率为6．72％，蛇床子总香豆素中主要成份蛇床子素含量达到15．26％。结论：采用本文方法提取的蛇床子有效成份得率较高，提取方法可靠，能有效地利用蛇床子药材资源，保证中药制剂的质量。     

聚合酶链反应在结核病诊断上的应用研究

本文运用ＰＣＲ检测技术，对５５例正常人，３５例非结核性肺部疾病患者，１４６例肺结核病人作对照，用抗酸染色法以及分枝杆菌培养法作对比分析，检测结果为ＰＣＲ检测法阳性率明显高于涂片和培养法，特异性为９７．８％，敏感世为８０％。由于其方法简单，检测速度快，灵敏度高，为结核病的诊断和鉴别诊断提供可靠的依据。     

用PCR技术研究疱疹病毒与新生儿黄疸的相关性

用聚合酶链反应（ＰＣＲ）技术检测了３９例新生儿黄疸患儿。结果１３例外周血淋巴细胞检出疱疹病毒ＤＮＡ，总检出率３３３％，其中巨细胞病毒（ＣＭＶ）１１例，Ⅱ型单纯疱疹病毒（ＨＳＶⅡ）２例，检出率分别为２８２％（１１／３９）和５１％（２／３９），未检出Ⅰ型单纯疱疹病毒（ＨＳＶⅠ）和ＥＢ病毒（ＥＢＶ）ＤＮＡ。提示新生儿黄疸与疱疹病毒感染有关     

The clinical features of immunoglobulin light-chain (AL) amyloidosis with heart involvement

We reviewed clinical presentation, investigations, therapy, prognosis and outcome of 232 patients with primary (AL) cardiac amyloidosis. There were 142 men and 90 women. Median age at presentation was 59 years (range 29-85). AL heart disease was unusual both in patients under the age of 40 (3.0%) and in non-Caucasians (6.5%). Fatigue and weakness were the commonest presenting symptoms. Hallmark features of periorbital ecchymoses and macroglossia were present in 12.5% and 27.2%, respectively. AL cardiac amyloidosis was unusual in isolation (3.9%), and most frequently patients had features of multiorgan dysfunction; heavy proteinuria and features of malabsorption predominating in this respect. Heart involvement represents the worst prognostic indicator, with a median survival from diagnosis of 1.08 years, falling to 0.75 years with the onset of heart failure. Current therapeutic procedures appear to prolong survival, with left ventricular wall thickness, mass and ejection fraction on echocardiography and late potentials on signal averaged electrocardiography of use in prognostic stratification. Cardiac involvement from AL amyloidosis is rapidly fatal. It should be suspected in all patients with heart failure who have wall thickening on echo, normal chamber sizes, low EKG voltages and evidence suggesting a multisystem disease.      

癌性贫血时血清促红细胞生成素变化的相关研究

目的 分析癌性贫血患者血清促红细胞生成素（Epo）水平及其与血红蛋白（Hb）水平的关系。方法 对53例癌性贫血、71例癌症无贫血和21例正常对照的血清用ELISA法检测Epo值；并对53例癌性贫血患者的Hb和Epo值与缺铁性贫血（IDA）患者相比较，以及根据Hb值进行分层分析。结果 ①癌性贫血组、癌症无贫血组、对照组的血清Epo分别为（63．08±104，1）mu／ml、（13．73±9．96）mu／ml和（8．10±4．97）mu／ml。癌性贫血组与癌症无贫血组及与对照组相比较有统计学意义（分别为P〈0.01和P〈0.01）。癌症无贫血组与对照组无统计学意义（P〉0.05）。②癌性贫血患者的Epo水平与Hb水平存在负相关（r=-0．693，P〈0.001）。③癌性贫血患者的Epo水平低于同样程度贫血的IDA患者（P〈0.01）。④轻度癌性贫血患者的Epo水平明显低于中重度癌性贫血患者。结论癌性贫血患者的Epo值高于癌症无贫血患者和正常人，并与Hb值呈负相关；随着贫血的加重，Epo水平逐渐升高；但低于同样程度贫血的IDA患者。