穿心莲内酯对TBHP诱导的椎间盘髓核细胞凋亡的作用及机制研究

目的：探讨穿心莲内酯（andrographolide,ANDRO）对叔丁基过氧化氢（tert-butyl hydroperoxide,TBHP）诱导的椎间盘髓核细胞（nucleus pulposus cells,NPC）凋亡的作用及其机制。方法：用TBHP诱导NPC建立细胞模型。将NPC分为5组：对照组、模型组（100μmol/L TBHP）、ANDRO低剂量组（100μmol/L TBHP+9μmol/L ANDRO）、ANDRO中剂量组（100μmol/L TBHP+18μmol/L ANDRO）和ANDRO高剂量组（100μmol/L TBHP+36μmol/L ANDRO）。流式细胞术检测细胞凋亡和活性氧（reactive oxygen species,ROS）水平,ELISA试剂盒检测氧化应激相关指标超氧化物歧化酶（superoxide dismutase,SOD）、谷胱甘肽过氧化物酶（glutathione peroxidase,GSH-PX）和过氧化氢酶（catalase,CAT）水平,JC-1探针法检测线粒体膜电位,Western blot检测动力相关蛋白1(dynam...     

Ca2+ channel actions of the non-dihydropyridine Ca2+ channel antagonist Ro 40-5967 in vascular muscle cells cultured from dog coronary and saphenous arteries

Summary We studied the membrane effects of (1S,2S)-2-(2-[[3-2(benzimidazolyl) propyllmethylamino]ethyl)-6-fluoro-1,2,3,4-tetrahydro-l-isopropyl-2-naphthyl-methoxy-acetate dihydrochloride, Ro 40-5967, a new non-dihydropyridine (DHP) Ca²⁺ channel antagonist, on dog coronary and saphenous arterial vascular muscle cells using the whole-cell patch-clamp method. Long-lasting (L-type) inward currents in 20 mM Ba²⁺ were measured over a range of test potentials (300 ms) from –50 mV to + 90 mV from a holding potential of –80 mV in the presence of 1 M Bay k8644 (a DHP Ca²⁺ agonist). Ro 40-5967 caused a concentration-dependent suppression of Ca²⁺ channel currents in muscle cells from both arteries, with greater potency on coronary than saphenous arterial cells. The concentration of Ro 40-5967 which inhibited the magnitude of peak inward currents by 50% (IC₅₀) was estimated to be 1 M (n = 5) in muscle cells from coronary artery and 10 M (n = 4) in saphenous artery. Ro 40-5967 (1 M) decreased the amplitude of the activation current-voltage relationship for coronary L-type Ca²⁺ channel currents over a wider range of membrane potentials than verapamil, diltiazem, or nifedipine. In contrast, block of Ca²⁺ channel currents in saphenous artery cells by 1 M Ro 40-5967 was only observed at command potentials positive to 0 mV. Ro 40-5967 (1 M) significantly shifted the voltage-inactivation curve downward by 40% in coronary (n = 4), but only by 18% in saphenous arterial muscle cells (n = 3). The non-parallel shift of the coronary artery inactivation curve suggests that pronounced resting channel block is a notable feature of Ro 40-5967. The marked inhibition of Ba²⁺ current by 1 M Ro 40-5967 in the inactivation protocol in coronary arterial muscle cells was found over the entire range of membrane holding potentials tested, while inhibition in the saphenous artery inactivation curve occurred only from holding potentials more positive than –40 mV. Therefore, Ro 40-5967 is unique: 1) in acting over a wider range of voltages, on both instantaneous and resting Ca²⁺ currents, than other Ca²⁺ antagonists; 2) in producing more significant resting state block; and 3) in acting with selectivity for coronary over saphenous arteries.This research was supported by National Institutes of Health grants HL38537, HL38645, and by F. Hoffmann-La Roche, Basel, Switzerland     

Optimal management of postpartum hemorrhage

目的　讨论产后出血干预治疗的合理方案。方法　回顾性分析 15例行干预性治疗的严重产后出血的病人的临床特点及方法。结果　 15例患者中子宫切除者 9例 ,行动脉栓塞治疗 7例 (2例切除子宫后又行栓塞治疗 ) ,行病灶挖除术 1例。需行干预性治疗的产后出血的原因依次为 :DIC ,子宫动 -静脉瘘及血管畸形 ,胎盘异常 ,子宫肌瘤及子宫裂伤。结论　应针对产后出血的不同原因、部位及性质选择合理有效的干预治疗。合理的治疗方案是抢救病人生命 ,保留生育功能 ,尽可能减少创伤的关键。     

移动平均数质控法在凝血试验中的应用

目的：建立凝血试验移动平均数质控法。方法：用移动平均数代替算术平均数,选择凝血验凝血酶原时间（ＰＴ）,活化的部分凝血激酶时间和纤维蛋白原３个项目,比较两种质控方法,同时用标准血浆作为质控。结果：当用适当的移动平滑系数时,移动平均数质控法既能排除病人标本非随机必的干扰,又能很好地反映试验前因素的影响。结论 ;移动平均数空法可用于凝血试验的实验室质控。     

透析中的终末期肾脏病可逆性探讨

透析中的终末期肾脏病 (ＥＳＲＤ) ,有不少医师认为已属不可治性 ,只能靠透析或肾移植维持生存。但也有人报道ＥＳＲＤ在透析治疗后有一定可逆缓解率〔1 ,2〕,部分患者肾功能可能恢复至氮质血症期甚至更低水平 ,并能脱离透析 ,避免肾移植或使之延后。本文回顾性分析本院 3 52例透析的ＥＳＲＤ病例 ,对ＥＳＲＤ的可逆缓解率及相关因素作初步探讨。对象与方法一、病例来源1992年 5月～ 1999年 9月曾在本院行血透治疗的所有慢性肾功能不全病例 ,符合下述条件者入选 :①患者有尿毒症的临床表现 (消化道症状及贫血为必备条件 ) ,肌酐清除率Ｃｃｒ…     

Clinical study on treatment of incipient diabetic nephropathy by integrated traditional chinese and western medicine

Clinical Study on Treatment of Incipient Diabetic Nephropathy by Integrated Traditional Chinese and Western Medicine@边 芳 @赵佩民 @张志深 @李艳英 @吴凤霞 @张红梅 @赵庆梅 @姬淑君 @闫树河 @黄金秀     

实验性局灶性脑缺血再灌注Fos蛋白的表达

目的　探讨大鼠局灶性脑缺血再灌注Fos蛋白表达的意义及其机制。方法　采用免疫组化法观察Fos蛋白在大鼠局灶性脑缺血再灌注后皮层和基底节区的动态变化。结果　Fos蛋白在大脑中动脉阻断 1h后 ,随再灌注时间延长其分布不同。基底节区持续时间长 ,阳性细胞多 ,而皮层持续时间短 ,阳性细胞少。其中再灌注 90min ,Fos蛋白表达最显著。大脑中动脉供血中心区皮层几无表达。结论　Fos蛋白的表达与神经细胞存活密切相关 ,出现Fos蛋白表达的区域神经元易于耐受缺血性损害而存活 ,可能是神经细胞自我保护机制之一 ,Fos蛋白的表达存在扩散抑制     

溶栓后早期T波的变化与冠脉再通的关系

目的 探讨急性心肌梗塞溶栓后早期Ｔ波的变化与闭塞冠脉再通的关系。方法 对８０例接受静脉溶栓治疗的ＡＭＩ患者进行前瞻性研究,根据溶栓后２４小时内有无Ｔ波倒置分为两组。依据临床间接判断冠脉再通的标准观察两组血管再通情况。结果 Ｔ波倒置组与未倒置组血管再通率分别为９３．１％和１１．３％（Ｐ〈０．０１）。结论 溶栓后早期Ｔ波倒置可作为判定梗塞相关血管再通的参考指标。     

止泻散敷脐治疗婴幼儿腹泻100例

0　引言　腹泻乃小儿最常见病 ,尤以 2岁以下婴幼儿最为常见 .年龄越小 ,发病率越高 ,且多在夏、秋季发病 .小儿患病后惧怕打针 ,服药以及输液 ,给治疗带来一些困难 . 12 a来 ,我们用自拟的止泻散敷脐治疗婴幼儿泄泻 ,效果良好 .1　对象和方法1.1　对象　 1998- 0 6 / 1999- 10婴幼儿腹泻发病高峰期门诊病例 10 0 (男 6 6 ,女 34 )例 ,年龄 2月龄～ 5岁 .肠炎 5 8例 ,单纯消化不良 42例 . 6 7例曾多次治疗 ,33例初诊 .凡接受治疗之患儿 ,一律停止用其他药物 .1.2　方法　药物组成 :川椒 12 g,干姜 12 g,小茴香 12 g,白芷 2 0 g,吴茱萸 5 g,…     

胰岛素样生长因子-Ⅰ及胰岛素样生长因子结合蛋白-3与胎儿宫内发育的关系

目的 检测孕妇静脉血、脐血中胰岛素样生长因子－Ⅰ (IGF－Ⅰ )及胰岛素样生长因子结合蛋白-3(IGFBP-3)水平,探讨 IGF－Ⅰ、 IGFBP-3与胎儿宫内发育的关系。方法 采用美国 DSL公司试剂盒。总计 81例孕妇,其中正常孕妇 38例,妊娠糖尿病孕妇 20例,正常妊娠分娩巨大儿孕妇 23例,采用放射免疫方法测定。 结果 正常组及巨大儿组孕妇静脉血 IGF-I与新生儿体重呈正相关 (r=0.653, r=0.640,两组 P均