排序方式: 共有30条查询结果,搜索用时 15 毫秒
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自1989年1月至1991年12月住院分娩2768人,新生儿2781人.高危孕产妇668人,占24.13%,均进行系统监护和处理.门诊进行高危评分、妊娠图、必要者遗传咨询和产前诊断.病房进行高危孕产妇处理、计划分娩和产时监护.高危孕产妇处理在分娩导向和选择分娩时机具有重要作用. 相似文献
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目的探讨沙棘油(sea buckthom oil,SBO)和五味子乙素(schisandrin B,Sch B)对亚慢性镉中毒致大鼠肾脏氧化损伤的影响。方法将健康清洁级Wistar大鼠按体重随机分为对照组(生理盐水)、单纯镉染毒组、CdCl_2 SBO染毒组和CdCl_2 Sch B染毒组,每组8只。对照组皮下注射生理盐水,单纯镉染毒组、CdCl_2 SBO染毒组和CdCl_2 Sch B染毒组均皮下注射6μmol/kg的CdCl_2,每天1次,注射容量为5 ml/kg,连续染毒6周;第7、8周,对照组和单纯镉染毒组灌胃生理盐水,灌胃容量为5 ml/kg;CdCl_2 SBO染毒组和CdCl_2 Sch B染毒组分别灌胃5 ml/kg的SBO和8 mg/kg的Sch B。染毒后,收集大鼠18 h尿液,然后处死大鼠,取肾组织,测定大鼠尿中乳酸脱氢酶(LDH)、N-乙酰-β-D-氨基葡萄糖苷酶(NAG)活力及尿蛋白、尿肌酐含量,肾皮质中谷胱甘肽(GSH)、丙二醛(MDA)含量及超氧化物歧化酶(SOD)、谷胱甘肽过氧化物酶(CSH-Px)活力。结果与对照组比较,单纯镉染毒组尿中LDH、NAG活力和尿蛋白含量、肾组织... 相似文献
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沙棘油对镉致大鼠肝损伤的拮抗作用 总被引:1,自引:0,他引:1
目的 探讨沙棘油(SBO)对急性、亚慢性染镉致大鼠肝损伤的拮抗作用.方法 急性实验时,对照组和染镉组均灌胃0.9%NaCl,SBO干预组灌胃5 ml/kg SBO(纯度为95%).2 h后,对照组皮下注射0.9%NaCl,SBO干预组和染镉组皮下注射35 μmol/kg CdCl2.亚慢性实验时,染镉组和SBO干预组皮下注射6μmol/kg CdCl2,对照组皮下注射0.9%NaCl,连续6周.然后SBO干预组灌胃5 ml/kg SBO,对照组和染镉组灌胃0.9%NaCl,共2周.腹主动脉取血并取肝脏,测定急性、亚慢性染镉大鼠血清乳酸脱氢酶(LDH)、谷丙转氨酶(GPT)活力,肝丙二醛(MDA)、谷胱甘肽(GSH)含量及超氧化物歧化酶(SOD)活力.结果 急性、亚慢性镉染毒使大鼠血清LDH、GPT活力明显升高,肝MDA、GSH含量明显升高及SOD活力明显降低.SBO干预组可使急性染镉大鼠血清LDH、GPT活力,肝MDA、GSH含量分别降至单纯染镉组的71.5%(183.77,257.02)、58.3%(15.83,27.13)和74.8%(88.49,118.27)、64.9%(6.81,10.49),差异有统计学意义(P<0.01),肝SOD活力明显升高.亚慢性染镉时,SBO处理组血清GPT活力明显低于单纯染镉组,肝MDA、GSH含量明显下降,肝SOD活力明显升高,差异有显著性(P<0.01).结论 SBO对急性、亚慢性镉染毒致大鼠肝氧化损伤有一定的拮抗作用. 相似文献
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目的观察小剂量舒降之对高血脂老年人的血脂作用,尤其是对氧化低密度脂蛋白的作用。方法本实验采用自身对照法,观察了30例高血脂老年人口服舒降之5mg/日×4周治疗前后的血脂变化,用配对t检验检测其差异显著性。结果小剂量舒降之不仅明显降低TC(从6.84±0.97到5.32±0.86mmol/L)、TG(从2.83±1.95到2.22±1.33mmol/L)、LDL(从144.56±60.66到107.70±28.51mg/dl)、ApoB(从127.41±65.11到88.85±40.64mg/dl),而且OXLDL明显下降(认50.37±25.41到34.01±17.76ug/dl),下降率分别为22%、21%、25.5%、30.3%和32.5%,均有统计学意义。冶疗高血脂症总有效率为93.3%,未发现严重副作用。结论小剂量舒降之对老年人降低血胆固醇、抑制LDL氧化、调整其他血脂紊乱安全而有效,可考虑长期服用。 相似文献
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N-乙酰半胱氨酸对汞致大鼠肾皮质线粒体能量代谢损伤的影响 总被引:2,自引:0,他引:2
目的通过亚急性汞染毒实验研究N-乙酰半胱氨酸(NAC)对汞所致大鼠肾皮质线粒体能量代谢的影响。方法将24只清洁级Wistar大鼠按体重随机分为分别为对照组、汞染毒组和NAC+汞染毒组,每组8只。对照组、汞染毒组大鼠腹腔注射生理盐水,NAC+汞染毒组腹腔注射0.480mmol/L的NAC,注射剂量为5ml/kg;2h后,对照组皮下注射生理盐水,汞染毒组和NAC+汞染毒组大鼠皮下注射368μmol/L的HgCl2溶液,注射剂量为5ml/kg。每天注射1次,连续注射14天。最后一次注射24h后,处死大鼠,取肾皮质,梯度离心得线粒体,测定丙二醛(MDA)含量、磷脂酶A2(PLA2)和琥珀酸脱氢酶(SDH)的活力以及线粒体膜电位。结果与对照组相比,汞染毒组大鼠肾皮质线粒体中MDA含量和PLA2活力以及膜电位升高,SDH活力下降,差异均有统计学意义(P0.05,P0.01);NAC+汞染毒组大鼠肾皮质线粒体中PLA2活力升高,差异有统计学意义(P0.05)。与汞染毒组相比,NAC+汞染毒组大鼠肾皮质线粒体中MDA含量和PLA2活力以及膜电位降低,SDH活力升高,差异均有统计学意义(P0.05,P0.01)。结论汞可导致大鼠肾皮质线粒体能量代谢的障碍;NAC预处理能降低汞所致大鼠肾皮质线粒体能量代谢的障碍。 相似文献
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目的:比较多巴酚丁胺心电图(Dobu-ECG)与 ̄(99m)Tc-MIBI心肌显像(Dobu-ECT)诊断冠心病的价值。方法:对69例拟诊冠心病而无心肌梗塞患者在行冠状动脉造影时进行多巴酚丁胺心肌显像检查。结果:Dobu-ECT诊断冠心病的敏感性和准确度优于Dobu-ECG(91.7%对47.2%,P<0.018,5.5%对66.7%,P<0.05),特异性二者之间无差异。诊断冠状动脉单支、双支、三支病变的敏感性Dobu-ECT优于Dobu-ECG。诊断前降支、右冠状动脉的敏感性,Dobu-ECT高于Dobu-ECG。在研究中无一例出现严重副作用。结论:Dobu-ECT对识别冠心病存在与否及冠心病冠脉病变程度和范围均优于Dobu-ECG。 相似文献
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Objective To evaluate dobutamine technetium-99m methoxy isobutyl nitrile (sestamibi) single-photon emission computed tomography (Dobu-ECT) in detecting residual ischemia and identifying coronary vessel disease after myocardial infarction.Methods Sixty-two patients with confirmed myocardial infarction were studied with Dobu-ECT at the time of coronary artery angiography. Dobutamine was administered intravenously in incremental rates from 5 to 40 μg· kg(-1)·min (-1) at 3-minute intervals. At the highest infusion rate, 7.4×10[8] Bq (99m) Tc-MIBI was injected intravenously, and tomographic imaging was performed after one hour. Resting images were taken after 24 hours, with a second dose of (99m)Tc-MIBI.Results The sensitivity of Dobu-ECT in detecting residual ischemia of myocardial infarction was 76%, which was higher than dobutamine electrocardiography (Dobu-ECG). Regardless of the single-, double- or triple-vessel diseases, Dobu-ECT was superior to Dobu-ECG in identifying residual ischemia (56% vs 4%, 86% vs 27%, 100% vs 47%, P<0.01, respectively). The incidence of residual ischemia in patients receiving thrombolytic therapy was 67%, lower than patients without thrombolysis (72%) or those with an old myocardial infarction (94%).But the differences were not statistically significant. Dobu-ECT detected only 56% of ischemias in non-infarct related myocardium. Eighty-two percent of all significantly stenosed vessels were detected with Dobu-ECT, and 84% of patients with multivessel disease could be accurately identified. The sensitivity of Dobu-ECT was significantly greater for detecting severe stenosis over moderate stenosis. The sensitivity for detecting stenosis in the right coronary artery was greater than left anterior descending or left circumflex, but its specificity was lower.Conclusion Dobu-ECT can identify residual ischemia, as well as its location and extent after myocardial infarction. Dobu-ECT can also accurately detect significantly stenosed vessels. 相似文献
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