N,N′-双取代脲类克鲁斯氏锥体虫半胱氨酸蛋白酶小分子抑制剂的合成及其活性研究

目的 :寻找克鲁斯氏锥体虫体半胱氨酸蛋白酶 (Cruzain)的小分子抑制剂。方法 :根据对Cruzain分子结构的计算机模拟设计结果 ,选用N ,N′ 双取代脲为先导结构 ,设计并合成了 2 1个未见文献报道的双取代脲衍生物 ,确证了它们的化学结构 ,测定了化合物的体外抑制Cruzain的IC50 值。结果 :生物活性测定结果显示所合成的化合物均有不同程度的抑制Cruzain的活性 ,其中化合物Ⅳ8、Ⅳ9和Ⅳ1 7的活性与对照药tf 175相当     

Primary tumors of the patella

This study reports 42 cases of histologically proven and radiographically correlated primary patellar tumors. Despite diverse histologic diagnoses, the radiographic appearances of benign as opposed to malignant patellar neoplasms are essentially indistinguishable. Although the literature suggests that giant cell tumor is the most frequent benign tumor of the patella, the most common benign neoplasm in this series is chondroblastoma (16 cases). Only four primary malignant lesions were encountered, three cases of lymphoma and one case of hemangioendothelioma. Since 38 (90%) of the 42 cases were benign, a benign etiology should be strongly favored, notwithstanding the radiographic appearance, whenever a primary patellar tumor is encountered.The opinions or assertions contained herein are the private views of the authors and are not to be construed as official or as reflecting the views of the Department of the Army or the Department of Defense.     

中国大学生吸烟行为和吸烟态度研究

目的:对我国大学生的吸烟现状进行调查;并检验“吸烟态度与吸烟行为具有一致性”的假设。方法:用问卷法对805名中国大学生进行了研究。结果:大学生中有19.1％的人为当前吸烟者;男生吸烟普遍性显著高于女生;吸烟的普遍性随着年级的增高而增高;大学生对尼古丁没有依赖性;不吸烟者抗烟态度强,吸烟者抗烟态度弱。结论:吸烟态度与吸烟行为具有一致性。     

Evaluation of the scalene lymph nodes in primary and recurrent cervical carcinoma

Open biopsy of the left scalene lymph nodes has been utilized to identify distant spread of cervical carcinoma in selected groups of patients who do not have other clinical evidence of disseminated disease. Twenty-one patients with primary cervical carcinoma and histologically proven para-aortic lymph node metastases and 10 patients with centrally recurrent tumors underwent scalene lymph node biopsy at Walter Reed Army Medical Center or the Naval Hospital, Bethesda, Maryland, between July 1, 1979 and June 30, 1985. All patients undergoing scalene node biopsy had clinically negative physical examinations. There were no surgical complications. All 31 biopsies were negative for metastatic tumor. Combined with previously reported data from this institution, 3 of 28 patients (11%) with primary cervical carcinoma and involved para-aortic nodes, and 6 of 35 patients (17%) with centrally recurrent disease had subclinical scalene node metastases. Patients with clinically suspicious scalene lymphadenopathy had fine needle aspiration cytology performed to document metastatic disease. The success of this technique has eliminated the need for open biopsy in these patients. Scalene node biopsy provides valuable prognostic information in patients with cervical cancer who have positive para-aortic lymph nodes. It also obviates surgical exploration in some patients felt to have resectable recurrent disease who actually have subclinical distant spread.     

颅咽管瘤全切术后抗利尿激素分泌异常综合征的治疗

目的 探讨颅咽管瘤全切术后抗利尿激素分泌异常综合征(SIADH)的临床特点及治疗方法。方法 120例颅咽管瘤切除术病人，112例肿瘤全切除，手术当日及术后每日定时检测血钠及观察尿量变化。17例病人术前、术后当日、术后3d、7d、14d检测血清抗利尿激素(ADH)水平，并进行比较观察。结果 ①72例(60％)术后出现以低血钠为主要特征的抗利尿激素分泌异常综合征。其中37例(51.4％)单纯性低血钠，29例(40.3％)尿崩症伴高血钠后转为低血钠，6例(8.3％)低血钠后转为尿崩症伴高血钠。②17例病人术前、术后当日、术后3d、7d、14d血清ADH放射免疫学测定，示术后SIADH病人血清ADH水平与术前相比有所增高，但是经统计学分析无显性差别。结论 颅咽管瘤全切术后SIADH为常见术后合并症，可能是由于颅咽管瘤术后下丘脑ADH的释放不能随着体内晶体渗透压变化而改变所致。术前和术后2周内血清ADH水平变化没有显性差异。     

Crest抗牙石牙膏对中学生龈上牙石形成的影响

１３１名学生使用含５％可溶性焦磷酸盐Ｃｒｅｓｔ牙膏，评价该牙膏对牙石形成的影响。采用Ｖ－Ｍ指数检查牙石，ＢＩ指数检查牙龈情况，１２个月后符合标准纳入统计者１００人，６个月结果表明，实验牙膏组Ｖ－Ｍ均数为５．０６，对照组为６．９８，差别为２７．５％（Ｐ〈０．０５），１２个月检查实验组Ｖ－Ｍ均数为７．２０，而对照组９．３８，差别为２３．２％（Ｐ〈０．０５）。结果表明该牙膏对牙石形成有一定预防效果。