高血压病患者血浆凝血噁烷B_2、6-酮-PGF_(1α)的变化

本文观察了60例不同临床分期的高血压病患者血浆凝血(口恶)B_2(TXB_2,血栓素B_2)、6-酮-PGF (1α)的变化,结果表明,高血压病各期TXB_2均明显升高,Ⅰ期高血压组6-酮-PGF_(1α)亦明显升高,TXB_2/6-酮-PGF_(1α)比值仅轻度增加;Ⅱ、Ⅲ期高血压组6-酮-PGF_(1α)则明显降低,TXB_2/6-酮-PGF_(1α)比值显著增加。组间比较:Ⅱ、Ⅲ期高血压组较Ⅰ期高血压组6-酮-PGF_(1α)显著降低,TXB_2/6-酮-PGF_(1α)比值明显增加。说明从高血压病初期到Ⅲ期,均有TXA_2、PGI_2的异常改变,这些变化可能与高血压的持续发展有关。     

消化性溃疡患者血前列腺素和血栓素的测定及意义

对34例消化性溃疡和25例正常人的血浆TXB、6-酮-PGF_1进行了测定,结果表明.溃疡组各期(?)TXB_2/6-酮-PGF_1)比值均明显高于对照组(P<0.05),溃疡组活动期患者的TXB(?)含量明显高于愈合期及对照组(P<0.05),且各期患者的6-酮—PGF含量和对照组比较无差异(P>0.05)。溃疡组中Hp组阳性及Hp阴 性患者的TXB 6-酮-PGF_1及TXB_2/6-酮-PGF_1比较均无差异(P>0.05);提示消化性溃疡存在TXB_2—PGF_1的失衡.其可能参与消化性溃疡的发病,Hp感染不影响溃疡患者血中TXB_2及PGF_1的含量 TXB_2增高可能是活动期溃疡周围炎症反应所     

急性心肌梗塞患者血浆血栓素B_2及6-酮-前列腺素F_1α的变化

对24例AMI后未用过能影响PG代谢药物的患者、17例AMI后用过能影响PG代谢药物的患者及45例健康正常人,分别测定其周围静脉血浆TXB_2浓度,见前组明显高于后两组。同时测定28例健康正常人及18例AMI后未用过能影响PG代谢药物的患者的静脉血浆TXB_2、6-酮-PGF_(1α)T/6比值,见两组6-酮-PGF_(1α)值无显著差异,而正常人T/6比值较低。因此认为,对AMI患者测定TXB_2及T/6比值,可能为临床测AMI患者发病提供有参考价值的依据。     

先天性心脏病并发肺动脉高压患者血浆血栓素B_2、6-酮-前列腺素F_(1α)和肾素、血管紧张素Ⅱ的变化

对50例左向右分流先心病并发肺动脉高压患者,进行血浆血栓素B_2(TXB_2)与6-酮-前列腺素F_(1a)(6-keto-PGF_(1a))含量以及二者比值(T/6)的测定。结果发现合并肺动脉高压患者的TXB_2与6-keto-PGF_(1a)的平衡失调,PRA(肾素活性)及A_Ⅱ(血管紧张素A_Ⅱ)也有一定改变。     

中、老年男性糖尿病阳萎患者血小板功能、血栓素B_2和6-酮-前列腺素F_(1α)的变化

测定32例糖尿病阳萎者和11例无阳萎者血小板最大聚集率(MAR)、血栓素B_2(TXB_2)和6-酮-前列腺素F_(1α)(6-keto-PGF_(1α)),并与正常人对照。结果表明,糖尿病有无阳萎组MAR、TXB_2及TXB_2/6-keto-PGF_(1α)比值均高于正常组(P<0.05～0.01),而6-keto-PGF_(1α)水平低下(P<0.01);糖尿病阳萎组这些指标变化更为明显;与无阳萎组比较,阳萎组MAR及TXB_2/6-keto-PGF_(1α)比值升高(P<0.05～0.01),6-keto-PGF_(1α)水平低下(P<0.05),而TXB_2则无明显变化。提示中老年男性糖尿病阳萎者血小板聚集释放功能亢进并与血栓素和前列环素平衡失调有关,从而促进阴茎血液高凝和阳萎的发生。     

不同血脂水平

72例不同血脂水平者的血清脂质与血清6-酮-前列腺素F_(1a)(6-Keto-PGFl_(1a))、血栓素B_2(TXB_2)及血浆纤维蛋白原(Fg)、纤维蛋白自然溶解活性(FA)间逐步回归分析结果提示:血清总胆固醇与血清6-Keto-PGF_(1a)呈负关联,与TXB_2呈正关联;血清甘油三酯与总胆固醇均与血浆FA间有负关联。     

硝苯地平对运动诱发冠心病心肌缺血时TXB_2、6-酮-PGF_(1a)变化的影响

本文以放兔法测定50例正常人及30例心绞痛型冠心病者静息时和踏车运动试验时血浆丁XB_2、6-酮-PGF_(1α)浓度,冠心病组在口服硝苯地平(硝苯吡啶)45mg/日1周后重复检查。结果为:正常人运动时TXB_2稍增高,6-酮-PGF_(1α)显著增高;冠心病组TXB_2显著增高,6-酮-PGF_(1α)则无变化;硝苯地平可有效地抑制冠心病组运动时TXB_2增高,增大运动耐量,减轻心肌缺血。提示运动诱发心肌缺血可能与TXA_2-PGl_2平衡失调有关,硝苯地平可改善TXA_2-PGl_2平衡,缓解心肌缺血。     

急性运动对糖尿病患者血浆血栓素B_2和6-酮-前列腺素F_(1α)水平的影响

观察比较了18例未见血管并发症的NIDDM患者在30分钟中等强度运动前、后血浆TXB_2和6-酮-PGF_(1α)水平的动态变化,并以年龄、性别、体重相对应的18例健康人为正常对照。结果发观:NIDDM组运动前血浆TXB_2和6-酮-PGF_(1α)水平及T/K值明显高于对照组,运动后血浆TXB_2水平显著下降,血浆6-酮-PGF_(1α)水平和T/K值有下降倾向,而对照组运动后血浆TXB_2和6-酮-PGF_(1α)水平及T/K值无明显变化。说明适当的运动不会增加糖尿病血管并发症的危险因素,提示运动疗法可能有益于延缓糖尿病血管并发症的发生和发展。     

原发性高血压患者速尿激发前后血浆肾素系统、心钠素、前列腺素系统的动态变化

本文以放免法测定了原发性高血压患者的血浆肾素活性、血管紧张素Ⅱ、醛固酮、心钠素、前列腺素的代谢产物血栓素 B_2、6-酮-PGF_(1α) 各值的变化,结果显示肾素活性无变化,6-酮-PGF_(1α)降低,其余各值均升高,与对照组比较有显著或非常显著差异(P<0.05～0.001)。速尿+立位激发后,各值较激发前均升高,两组亦有显著或非常显著差异(P<0.05～0.001)。激发后血栓素 B_2与6-酮-PGF_(1α)相关,其他各组间激发前后均不相关,提示原发性高血压可能有升降压机制受到障碍而呈不平行改变。     

鼠脑缺血后脑前列腺素和血栓素的改变

正常脑组织中仅含少量前列腺素(PG),脑缺血时脑组织中PG的浓度会大量增高。卒中病人脑脊液中PG的升高即提示缺血损伤期间产生PG增多。本研究测定了脑缺血再灌注时脑前列腺素E_2(PGE_2),前列腺素F_(2α)(PGF_(2α)),6-酮-前列腺素F_(1α)( 6-酮-PG_(1α)),血栓素B_2(TXB_2)的变化。 选60只雌沙土鼠分成6个再灌注组,乙醚浅麻下用动脉夹钳夹双侧颈动脉,5分钟后松开动脉夹。分别于再灌注,0,1,2.5,15,60分钟时用断头术处死鼠,迅速取出大脑半球并冷冻于液氮中。模拟手术的对照鼠40只,仅暴露但不阻断颈动脉,     

青少年高血压的研究进展

随着人们生活和行为方式的改变,高血压发病明显呈年轻化趋势。在青少年时期识别高血压病高危人群有助于早期进行有效干预和治疗,降低未来高血压的发生率及其严重性。现试从青少年高血压的诊断、发病因素、特点、治疗策略等方面的研究进展作一综述。     

C·肉毒杀鼠素(冻干剂)应用研究

目的为研究C·肉毒杀鼠索对杀灭达乌尔黄鼠(简称黄鼠)的大面积应用情况和对家畜、家禽的毒害作用,进行了C·肉毒杀鼠素的应用研究.方法大面积投毒采用ES-2药饵撒播机[1],间隔约80m进行条投.羊、鸡采用直接灌胃.结果大面积应用的灭鼠率为83.72%.对羊、鸡最高剂量分别为500万MLD、150万MLD,均未出现中毒现象.结论 C·肉毒杀鼠素是较为理想的草原大面积杀灭黄鼠的理想、首选药物.     

Morbidity in cardiovascular diseases in immigrants in Sweden

INTRODUCTION: Although immigration to Sweden has increased in the last few decades, the incidence rates of cardiovascular disease and coronary heart disease in immigrants are unknown. The aim of the present study is to estimate whether place of birth affects the incidence rates of cardiovascular disease and coronary heart disease. MATERIAL AND METHODS: The study was designed as a follow-up study on morbidity in cardiovascular disease and coronary heart disease between 1 January 1997 and 31 December 1998, including three and a half million persons with age range 35-64 years, of whom 550 000 were born abroad, from the database MigMed consisting of the whole Swedish population. Incidence rates and relative risks were estimated by indirect standardization and a proportional hazard model. RESULTS: The age-adjusted risk of coronary heart disease was higher in most foreign-born groups than in Swedes. For example, in nine of 12 male groups, the relative risks varied between 1.1 and 2.2, and in seven of 12 female groups, the relative risks varied between 1.4 and 2.5. When also adjusting for level of education and employment status, the risks were still high, but on a lower level. CONCLUSIONS: Foreign-born people possess an over-risk of cardiovascular or coronary heart disease(CVD/CHD) compared with Swedish-born persons, also when level of education and employment status are taken into account.     

Pulmonary sporotrichosis in Oklahoma in susceptibilities in vitro

Six cases of pulmonary sporotichosis were observed in 2 institutions in Oklahoma City, Okla. Three of the patients were treated with iodides with or without surgery. Although one patient required a second course of iodides, the patients have remained well after at least 34 months of follow-up. Three patients treated with amphotericin B, single course as well as multiple courses, and other antifungal agents (hydroxystilbamidine and miconazole) have all relapsed. These cases and a reviewed of more than 40 cases of pulmonary sporotrichosis susceptibilities of Sporothrix schenckii that we observed in vitro suggest that amphotericin B is not an effective agent for the treatment of pulmonary sporotrichosis. It is our opinion that the treatment of choice for pulmonary sporotrichosis is a supersaturated solution of potassium iodide. If the patient is allergic to the medication or fails to respond, then a combination of amphotericin B plus flucytosine may be tried.     

高龄老年高血压的临床研究进展

随着社会老龄化进程的加快,80岁以上高龄老人的绝对数量以及占总人口的比例均在增加,如何提高高龄老年高血压的防治水平备受关注。现试从高龄老年高血压的临床特点、治疗策略等方面的临床研究进展作一综述。