鼻咽分泌物中β2微球蛋白测定的临床意义

To study its clinical significance, beta 2-microglobulin (beta 2-MG) in nasopharyngeal secretion was examined using radioimmunoassasy methods in 73 patients with nasopharyngeal carcinoma (NPC), 30 with chronic nasopharyngitis and 30 normal control subjects. In 31 NPC patients, the examination was repeated before and after radiotherapy. The average concentrations of beta 2-MG were 4.87 +/- 2.51 mg/L in NPC group, 1.05 +/- 0.64 mg/L in chronic nasopharygitis group, and 0.85 +/- 0.32 mg/L in the control. The beta 2-MG concentration was higher in the NPC patients than in both chronic pharyngitis patients and normal subjects (P < 0.01). The concentration was lowered down in NPC patients after radiotherapy, and remained high when the treatment failed to control the condition. It seems that beta 2-MG level in nasopharyngeal secretion is closely related to the prognosis and recurrence of nasopharyngeal carcinoma.     

Echocardiographic assessment of patent ductus arteriosus shunt flow pattern in premature infants

AIMS—To identify the patent ductus arteriosus (PDA) shunt flow pattern using Doppler echocardiography; and to assess whether it could be used to predict the development of clinically significant PDA.
METHODS—Premature infants weighing under 1500 g, who required mechanical ventilation, and in whom daily echocardiography could be performed from day 1 until the ductus closed, and on day 7 to confirm closure, were studied. The PDA shunt flow was identified from four Doppler patterns, and the closed pattern of a closed duct was also presented. Clinically significant PDA was diagnosed when there was colour Doppler echocardiographic evidence of left to right ductal shunt associated with at least two of the following clinical signs: heart murmur (systolic or continuous); persistent tachycardia (heart rate>160/min); hyperactive precordial pulsation; bounding pulses; and radiographic evidence of cardiomegaly or pulmonary congestion.
RESULTS—Of 68 infants enrolled into this study, clincally significant PDA developed in 31. The most recordable sequence of transition change of shunt flow pattern for clinically significant PDA was: pulmonary hypertension pattern, to growing pattern, to pulsatile pattern, to closing pattern, to closed pattern. And that for non-clinically significant PDA was: pulmonary hypertension pattern, to closing pattern, to closed pattern. The growing and the pulsatile patterns were mostly documented in infants with clinically significant PDA. The first documented growing pattern to predict clinically significant PDA gave a sensitivity of 64.5% and a specificity of 81.1%; the first documented pulsatile pattern gave a sensitivity of 93.5% and a specificity of 100%.
CONCLUSION—Doppler echocardiographic assessment of PDA shunt flow pattern during the first 4 days of life is useful for predicting the development of clinically significant PDA in premature infants. At that stage, the closing or closed Doppler pattern indicates that infants are not at risk of developing clinically significant PDA; the growing or pulsatile Doppler pattern indicates a continuing risk of developing clinically significant PDA.

     

多囊卵巢综合征患者血清生长激素和泌乳素对左旋多巴反应的研究

目的：探讨多囊卵巢综合征（ＰＣＯＳ）患者生长激素（ＧＨ）和泌乳素（ＰＲＬ）异常分泌的机理。方法：对黄体生成素（ＬＨ）／卵泡刺激素（ＦＳＨ）≥３的１５例患者（Ｉ型组）、ＬＨ／ＦＳＨ＜３的１５例患者（Ⅱ型组）以及２０例月经周期正常妇女（对照组），行左旋多巴（Ｌ－ＤＡ，５００ｍｇ）兴奋下丘脑－垂体轴功能试验，观察３组ＧＨ和ＰＲＬ的浓度变化。结果：在基础状态下，Ⅰ、Ⅱ型组的ＧＨ较低（Ｐ＜０．０１）、ＰＲＬ较高（Ｉ型组，Ｐ＜０．０５）；Ｌ－ＤＡ兴奋试验后，Ⅰ、Ⅱ型组ＧＨ的升高程度和ＰＲＬ的下降程度均低于对照组。结论：ＰＣＯＳ的ＧＨ和ＰＲＬ异常分泌可能与其中枢ＤＡ活性不足有关。     

Pulmonary tuberculosis in five young infants with nursery exposure: clinical, radiographic and CT findings

Clinical, radiographic (n = 5) and CT findings (n = 4) of five Korean infants ranging in age from 2 to 3 months with confirmed tuberculosis were retrospectively analysed. All of the patients were symptomatic, anergic to tuberculin, and had a positive culture of Myobacterium tuberculosis in gastric aspirates. The probable source of infection was the hospital in which they were born. CT scans demonstrated hilar and mediastinal lymph node enlargement with central low attenuation and peripheral enhancement in all cases. CT may be useful in diagnosis by demonstrating characteristic adenopathy and disseminated disease in young infants. Received: 2 September 1997 Accepted: 23 April 1998     

计算机技术在中药现代化进程中的作用

中药研究手段的现代化是中药现代化最重要的组成部分。现代多学科的不断相互交叉渗透，特别是本世纪出现的计算机技术和近年发展的各种多媒体技术等，给建立新的研究方法和手段带来了良好的机遇。利用计算机自动控制和图像分析处理技术结合摄影、跟踪扫描、显微成像等先进手段，从动物的整体行为到细胞水平进行药理实验的实时监测处理和图像分析正成为国际药学界的主导方向。各种HPLC、核磁共振仪等化学分析分离技术已广泛采用了计算机技术。近年来发展的计算机药物辅助设计系统、学习记忆、自主活动等行为学计算机监控系统也开始用于药学…     

Anti -addiction effects of agmatine against heroin self-administration in rats

Rationale： Drug abuse is serious and costly health problems. Present understanding that drug addiction is a chronic brain disease paves the way for pharmacotherapy. Unfortunately, few medications have proven effective for the treatment of addiction and dependence. Searching novel strategies of pharmacotherapy against drug addiction are challenging. Agmatine （ decarboxylated L - arginine）, an endogenous imidazoline receptor ligand, with multiple pharmacological profiles including its NMDA antagonistic properties, attracts the attention for its potential therapeutic efficacy for drug addiction.     

生态型网络的探讨

1网络与现代生活:对焦虑、不安的宣泄 焦虑和不安正普遍地袭扰着现代人.不论是在校的学生还是社会其它领域的人们都不同程度地感受到来自生存竞争、环境恶化、疾病滋生和由失望、落败、不满等心理情绪无从排解而带来的对外界的不安全感和对人生意义的空缺感.     

玻璃体切除联合注气术治疗黄斑裂孔

目的:探讨玻璃体切除术治疗特发性黄斑裂孔的临床疗效。方法:对27例(28眼)黄斑裂孔患者行玻璃体切除术联合注气术,术中行剥膜、气液交换、注入C3F8气体。结果:术后6mo随访28眼解剖成功率为86%,视力成功率为78%,两者均与症状持续时间成反比。结论:玻璃体切除联合注气术为特发性黄斑裂孔提供了较理想的治疗方法。