阿片受体在异氟醚延迟预处理减轻兔心肌缺血再灌注损伤中的作用

Objective To investigate the role of opioid receptors in the protective effects of isoflurane-induced delayed preconditioning against myocardial ischemia-reperfusion (I/R) injury in rabbits. Methods Forty male New Zealand white rabbits weighing 2.0-2.5 kg were randomly assigned into 4 groups ( n = 10 each) : group I sham operation (S); group II I/R; group Ⅲ isoflurane + I/R (Iso) and group IV Iso + naloxone + I/R (Nal). Myocardial I/R was induced by 40 min occlusion of left anterior descending branch (LAD) of coronary artery followed by 120 min reperfusion. In group Ⅲ (Iso) 2% isoflurane in 100% O2 was inhaled for 2 h and I/R was produced 24 h later. In group IV (Nal) naloxone 6 mg/kg was given iv 10 min before 2 h of 2% isoflurane inhalation and I/R was produced 24 h later. At the end of 120 min reperfusion, infarct size (IS) and area at risk (AAR) were determined by Evan's blue and TTC staining. Myocardial ultrastructure was examined by electron microscopy. The phosphorylated p38MAPK protein expression in myocardium was determined by Western blot. Results The IS was significantly smaller in group Iso ( Ⅲ ) ( 19.7% ± 2.8%) than in I/R group ( II ) (37.8% ±1.7%) (P<0.05). The phosphorylated p38MAPK protein expression in myocardium was significantly lower in group Iso than in group I/R. Microscopic examination showed less myocardial damage in Iso group than in group I/R. The protective effects of delayed preconditioning by isoflurane was prevented by naloxone pretreatment. ConclusionOpioid receptors may be involved in the protective effects of delayed preconditioning by isoflurane against myocardial I/R injury.     

多发性骨髓瘤的个体化治疗

多发性骨髓瘤（multiple myeloma,MM）是一种在中、老年人中发病率较高,严重危害人类健康的浆细胞恶性增生性血液肿瘤.虽然放疗、化疗及干细胞移植在MM患者中可取得一定疗效，但MM目前仍是一种无法根治的疾病，且长期完全缓解者极少。新近研究已发现了一些具有独特作用机制的药物（如沙利度胺、雷纳利度胺、硼替佐米等），同时随着近年来对骨髓瘤细胞生物学了解的深入，     

11例重型脂肪栓塞综合症的治疗

脂肪栓塞综合症（下称脂栓症）是创伤后的一个严重并发症,男性发病率高于女性,约为3：l,在多发伤病人中的发生率较高。由于伤后存在隐匿期,临床上不易发现,而一旦发病,病势凶险,死亡率高达10％－15％。现对我院1995年3月一1998年9月转入ICU的11例严重脂检症病人进行总结回顾,探讨对该综合症的诊治经验和教训。1临床资料1．l一般资料：男9例,女2例,年龄对一48岁,平均年龄四．9岁。致伤原因：车祸6例,工伤4例,高楼坠落伤1例。11例中多发骨关节伤6例,多发伤5例。其中双股骨骨折2例,骨盆骨折5例,肋骨骨折伴血气胸3例,肠破裂2…     

血浆总同型半胱氨酸测定及其临床意义

目的： 建立血浆总同型半胱氨酸（ｈｏｍｏｃｙｓｔｅｉｎｅ, Ｈｃｙ） 的检测方法,测定正常人和冠状动脉硬化及先天性心脏病核心家庭血浆同型半胱氨酸水平的变化。方法：应用柱前衍生化ＨＰＬＣ方法, 测定了４９ 例正常人,７４ 例冠状动脉硬化患者及７ 个先天性心脏病核心家庭中的１９ 个成员的血浆总Ｈｃｙ 水平。结果： 衍生化ＨＰＬＣ测定血浆总Ｈｃｙ 浓度的方法,具有特异性强、灵敏度高、重复性好的特点。正常成年血浆总Ｈｃｙ 浓度为（８．４ ±０ ．８） μｍｏｌ·Ｌ－ １（ ｎ＝ ４２,－ｘ ±ｓ－ｘ ,下同） ;冠状动脉硬化和出生性缺陷家庭成员平均血浆总Ｈｃｙ 水平分别为（１６．９±１．７）及（２８．４±１ ．２） μｍｏｌ·Ｌ－１ ,与正常人比较差异具有显著性（ Ｐ＜ ０．０５, Ｐ＜０ ．００１）。结论：高同型半胱氨酸是动脉硬化和先天性心脏病的一个危险因素。测定血浆Ｈｃｙ 可作为动脉硬化和先天性心脏病的一个辅助诊断指标。     

促进患者子宫切除术后胃肠功能恢复的研究进展

子宫切除术是治疗女性子宫良性疾病最常见的手术方法之一,根据患者病变的大小、性质、部位等不同,所采取的手术方式包括部分切除、全切除、广泛切除等。子宫切除术后,受诸多因素影响,患者易产生胃肠功能障碍的症状,影响患者康复进程。本研究综述了近年来应用于促进患者子宫切除术后胃肠功能恢复的几种方法,以期为今后进一步的研究提供参考。     

活血化瘀治疗血栓闭塞性脉管炎血液流变学观察

本文用活血化瘀法对47例血栓闭塞性脉管炎进行了治疗前后的血液流变学观察,并设健康对照50例.结果;血栓闭塞性脉管炎治疗前与健康组比较,血液流变性有明显异常.表现为全血比粘度、血浆比粘度、纤维蛋白原均明显高于健康组,经统计学处理P<0.01～0.05,有显著性差异.而治疗前后比较,血液流变性有明显改善.表现为全血比粘度、血浆比粘度、纤维蛋白原,血小板粘附均明显降低,经统计学处理有非常显著性差异(P<0.01～0.05).说明该病患者血液流变性存在着广泛而明显的异常,活血化瘀法具有显著改善血液流变性的作用.     

高压氧对椎基底动脉缺血性眩晕的疗效

高压氧对椎基底动脉缺血性眩晕的疗效杨思军谷德祥曹中柱陈雷李燕君朱蓉椎基底动脉缺血性眩晕（ＶＢＩＶ）十分常见，我科于１９９４年８月至１９９６年５月采用高压氧（ＨＢＯ）治疗，同时观察脑干听觉诱发电位（ＢＡＥＰ）与脑局灶血流量（ｒＣＢＦ）的变化，现将疗效结...     

南瓜子氨酸的结构

南瓜子中有一种抗血吸虫病的成分,具有羧基、伯氨基和仲氨基各一,名之为南瓜子氨酸(C₅H₁₀N₂)。与茚三酮定量逸放二氧化碳及部分氨。分子中不含双键、碳甲基、氮甲基及氮乙基等。制得N-甲苯磺酰衍生物(Ⅲ),经次溴酸钠氧化后,获得酮基位于5.69微米,并呈α-氨基酮性质的化合物(Ⅴ),分子式为C₁₁H₁₃O₃NS。该物同过氧酸作用,产生甲醛及N-甲苯磺酰基-β-氨基丙酸(Ⅵ)。后者仅比其前身少一个碳,并以甲醛形式丢失,故化合物(Ⅴ)应为N-甲苯磺酰基-β-四氢吡咯酮。南瓜子氨酸乃是β-氨基-β-羧基四氢吡咯(Ⅰ)。     

阿片受体在异氟醚延迟预处理减轻兔心肌缺血再灌注损伤中的作用

Objective To investigate the role of opioid receptors in the protective effects of isoflurane-induced delayed preconditioning against myocardial ischemia-reperfusion (I/R) injury in rabbits. Methods Forty male New Zealand white rabbits weighing 2.0-2.5 kg were randomly assigned into 4 groups ( n = 10 each) : group I sham operation (S); group II I/R; group Ⅲ isoflurane + I/R (Iso) and group IV Iso + naloxone + I/R (Nal). Myocardial I/R was induced by 40 min occlusion of left anterior descending branch (LAD) of coronary artery followed by 120 min reperfusion. In group Ⅲ (Iso) 2% isoflurane in 100% O2 was inhaled for 2 h and I/R was produced 24 h later. In group IV (Nal) naloxone 6 mg/kg was given iv 10 min before 2 h of 2% isoflurane inhalation and I/R was produced 24 h later. At the end of 120 min reperfusion, infarct size (IS) and area at risk (AAR) were determined by Evan's blue and TTC staining. Myocardial ultrastructure was examined by electron microscopy. The phosphorylated p38MAPK protein expression in myocardium was determined by Western blot. Results The IS was significantly smaller in group Iso ( Ⅲ ) ( 19.7% ± 2.8%) than in I/R group ( II ) (37.8% ±1.7%) (P<0.05). The phosphorylated p38MAPK protein expression in myocardium was significantly lower in group Iso than in group I/R. Microscopic examination showed less myocardial damage in Iso group than in group I/R. The protective effects of delayed preconditioning by isoflurane was prevented by naloxone pretreatment. ConclusionOpioid receptors may be involved in the protective effects of delayed preconditioning by isoflurane against myocardial I/R injury.