脑血管病危险因素在海口城乡对比的调查

目的 通过脑血管病危险因素在海口城乡对比的调查,了解脑血管病发病的相关因素。方法 以整群随机抽样法,从超过４０岁人群中取城市１９２人,农村２３１人进行测定血糖、血甭胆固醇、苷油三酯、高密度脂蛋白、低密度脂蛋白、极低密度脂蛋白。结果 经统计学处理,发现胆固醇、苷油三酯高、低密度脂蛋白、极低密度脂蛋白、极低密度脂蛋白城乡比较均有显著差异（Ｐ〈０．０１）,脑血管病发病率、死亡率,城市明显高于乡村（Ｐ〈０     

Growth-factor regulation of mdm-2 messenger-RNA expression

We have investigated the growth factor regulation of mdm-2 mRNA levels in mouse embryo fibroblasts, whose growth is controlled by platelet-derived growth factor (PDGF) and insulin-like growth factor I (IGF-I). We find that both growth factors up-regulate the expression of mdm-2 mRNA, independently of each other.     

侧脑室—腹腔分流治疗脑积水62例报告

目的　探讨脑积水的治疗方法和疗效。方法　62例均行侧脑室-腹腔分流术。脑室端从枕角穿入10cm接引流泵,再从皮下隧道引至上腹或左下腹放入腹腔。结果　1～4周后复查,症状完全消失56例,部分改善5例,无变化1例。57例复查CT示:52例脑室恢复正常,4例脑室较前缩小,1例无变化。堵管9例。低颅内压2例,硬膜下血肿2例,经保守治疗痊愈。49例随访1～8年,41例能正常工作学习,5例生活自理,1例植物生存,2例死亡。结论　明确诊断,掌握手术适应症及手术技巧是成功的关键。     

鼻腔鼻窦非上皮源性恶性肿瘤7例报告

报告鼻腔鼻窦非上皮源性恶性肿瘤７ 例,其中恶性黑色素瘤２ 例,恶性神经鞘瘤２ 例,非霍奇金氏淋巴瘤２ 例,平滑肌肉瘤１ 例。因鼻腔鼻窦恶性黑色素瘤罕见,故易误诊,其中１ 例因高度疑为此病,经病检证实,及时准确切除了瘤体,术后存活５ 年余;恶性神经鞘瘤临床确诊主要依靠病检,诊断平滑肌肉瘤则需结合免疫组化检测,随免疫组化的开展,非霍奇金氏淋巴瘤的临床与病理诊断符合率已有提高,前三者治疗以手术切除为主,非霍奇金氏淋巴瘤则可先化疗再局部放疗。     

番红花的化学及药理研究概况

综述了番红花属植物近期的化学及药理研究情况,主要集中在对其柱头中类胡萝卜素及胡萝卜素类化合物的分离及鉴定上;对一些化合物抗癌活性的研究相对集中。     

3种低温保存板层角膜移植材料的电镜观察

评价低温保存板层角膜移植材料的效果。方法将１５只人尸角膜分三组保存２年：４℃甘油脱水法,角膜液氮冷冻法,全眼球液氮冷冻法。并做透射电镜观察。结果第一组中,角膜胶原纤维排列紊乱,疏松,缺乏连续性,可见广纤维变性,纤维间可见极低电子密度灶。     

左室重量与左心功能不全相关性的研究

目的：研究可否用左室重量表达并判定左心功能不全的可能性。方法：将左心功能不全按NYHA标准分成4个级别,每级1组,并设正常对照组,用超声心动图测量同一个病人的左室射血分数（LVEF）和左室重量。用SAS统计软件做方差分析。结果：LVEF与左心功能不全高度负相关（R＝－0．77270）,左室重量与左心功能不全高度正相关（R＝0．73421）。LVEF、左室重量各级指标间差别显著（n＝153,F＝64．85,P＜0．01;n＝153,F＝53．39,P＜0．0001）。各级与对照组比统,LVEF指标从Ⅱ级开始方有显著差别（P＜0．05）;而左室重量指标从Ⅰ级开始就有显著差别（P＜0．05）。结论：LVEF与左室重量指标均与左心功能不全高度相关,但心功能Ⅰ级的病人,左室重量指标更为敏感。     

Hypoxia induces differential changes of dopamine metabolism in mature and immature mesencephalic and diencephalic cell cultures

Summary. Perinatal hypoxia is known as a high risk factor for the development of long-lasting abnormalities in dopaminergic system. The early developmental alterations of dopamine (DA) metabolism induced by hypoxia could contribute to these abnormalities. To understand the hypoxia-induced changes of intra- and extracellular dopamine levels and its main metabolites, 3,4-dihydroxyphenylacetic acid (DOPAC) and homovanillic acid (HVA), in immature dopaminergic neurons, we compared these changes in rat mesencephalic and diencephalic cell cultures on day in vitro (DIV) 2 (immature cells), DIV 8 and DIV 13 (mature cells). Cell cultures were exposed to an oxygen-free gas mixture in a Billups chamber for 2–4 hours. Mature cell cultures responded to hypoxia with an increase of DA levels in the cells and in the medium during the first 45 min (by an average of 57 and 114% respectively). Thereafter, DA levels decreased, and returned to the baseline within the next 30 min. The cellular DA levels continued to decrease up to 15% of the baseline during 255 min hypoxia whereas the extracellular DA content stabilized at the prehypoxic levels. Immature cell cultures (DIV 2) in contrast to mature ones, were unable to maintain normal extracellular DA levels during hypoxia and showed a decrease of the cellular and extracellular levels to 50% of the prehypoxic levels. DOPAC and HVA changes mimick, however, at a lower level, the pattern of DA changes during the exposure to hypoxia. In principle, in the diencephalic cell culture similar effects of hypoxia exposure on the investigated parameters were found (studied during 0–120 min). The present study demonstrates that mature and immature dopaminergic cells differ in the regulation of the extra- and intracellular DA levels during hypoxia. In immature cells the low synthetic capacity of tyrosine hydroxylase and the deficient capacities of the transport and storage processes result in decreased extracellular DA levels. This could be an important factor for the long-term modulation of the expression of tyrosine hydroxylase and subsequent long-term behavioral and/or neurological abnormalities induced by perinatal hypoxia. Received June 8, 1998; accepted July 21, 1998     

Paget病19例

目的 提高对Ｐａｇｅｔ病的诊治水平。方法 回顾性分析１９８７年至１９９７年收治的１９例Ｐａｇｅｔ病的临床表现及诊治方法。结果 本组乳腺Ｐａｇｅｔ病６例,乳腺外１３例,其中阴茎,阴囊１１例,腹股沟处１例,肛周肛管１例。随访时间０．５－１１年,平均５年４个月,随访中３例复发者,其截端切片病理检查均可见病变组织,另１例死于其他疾病。     

Effects of Lipoprotein(a) on Elderly \= Diabetes Mellitus

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