瑞舒伐他汀钙对apoE-/-小鼠动脉粥样硬化血清抵抗素的影响

目的研究瑞舒伐他汀钙对小鼠动脉粥样硬化血清抵抗素的影响。方法将高脂喂养的雄性apoE-/-小鼠24只,随机分为模型组(n=12)、瑞舒伐他汀钙组(n=12,加用瑞舒伐他汀10mg.kg-1.d-1蒸馏水稀释后灌胃)。雄性C57BL/6J野生型小鼠12只作为正常对照组。12周后,处死小鼠,收集血清,测定血脂及抵抗素的含量。取主动脉根部做病理切片,HE染色后,检测校正斑块面积。结果瑞舒伐他汀钙组较模型组血中TC、TG、LDL-C浓度有显著下降(P<0.01)。瑞舒伐他汀钙组动脉粥样硬化病变的校正斑块面积显著低于模型组(P<0.01)。模型组与正常对照组比较,血清抵抗素浓度明显升高(P<0.01)。瑞舒伐他汀钙组较模型组血清抵抗素浓度显著降低(P<0.01)。结论瑞舒伐他汀钙可有效地降低动脉粥样硬化小鼠的血清抵抗素含量,显著抑制炎症反应,抑制粥样斑块进展,从而减轻动脉粥样硬化,此可能为他汀类药物抗动脉粥样硬化的机制之一。     

瑞舒伐他汀和阿托伐他汀对高胆固醇血症患者血浆脂蛋白相关性磷脂酶A2的影响

目的 比较瑞舒伐他汀和阿托伐他汀对高胆固醇血症惠者血浆脂蛋白相关性磷脂酶A2(LpPLA2)活性的影响.方法 本试验为随机、双盲研究.在4周治疗性生活方式改善后,符合入选标准的高胆固醇血症患者随机分入瑞舒伐他汀5 mg组(瑞舒伐他汀5 mg/d)、瑞舒伐他汀10 mg组(瑞舒伐他汀10 mg/d)和阿托伐他汀10 mg组(阿托伐他汀10 mg/d),治疗8周.药物治疗前和治疗8周后测定血清总胆固醇、血清甘油三酯、血清低密度脂蛋白胆固醇、血清高密度脂蛋白胆固醇水平以及血浆Lp-PLA2活性.结果 60例高胆固醇血症患者入选.治疗前各组血脂参数和血浆Lp-PLA2活性相似.治疗8周后,瑞舒伐他汀5 mg组、瑞舒伐他汀10 mg组和阿托伐他汀10 mg组血清低密度脂蛋白胆固醇(LDL-C)水平分别降低35%、41%和36%,血浆Lp-PLA2活性降低幅度分别为15%、17%和15%.血浆Lp-PLA2活性和血清LDL-C水平相关(r=0.507,P=0.00).结论 高胆固醇血症患者瑞舒伐他汀和阿托伐他汀治疗8周后,血浆Lp-PLA2活性均显著下降.血浆Lp-PLA2活性和血清LDL-C水平相关.     

瑞舒伐他汀与阿托伐他汀对冠心病患者血清脂肪因子Vaspin的影响

目的:探讨瑞舒伐他汀与阿托伐他汀对冠心病患者血清内脏脂肪组织来源的丝氨酸蛋白酶抑制剂(Vaspin)的影响。方法:连续选取70例冠心病患者,随机分为瑞舒伐他汀组(10 mg/d)与阿托伐他汀组(20 mg/d),采用酶联免疫吸附法(ELISA)测定所有研究对象血清Vaspin水平,观察药物治疗前后冠心病患者血清Vaspin水平变化。结果:药物治疗8周后,两组患者血胆固醇、低密度脂蛋白、三酰甘油和高敏C反应蛋白水平均明显降低(P<0.05)。瑞舒伐他汀组较阿托伐他汀组血清Vaspin水平明显增高(P<0.01)。相关性分析表明,两组患者的血清Vaspin水平与血TC、TG、LDL-C、HDL-C和hs-CRP无相关性(P>0.05)。结论:与阿托伐他汀相比,瑞舒伐他汀更能有效增高血清Vaspin水平。     

瑞舒伐他汀对心肌梗死兔心房神经重构的影响

目的探讨瑞舒伐他汀对心肌梗死(MI)后心房神经重构的影响。方法开胸后结扎前降支制作兔MI模型,24 h后将存活兔分为心肌梗死组(MI,n=7)、药物干预组(Rt,n=8),并设假手术组(S,n=9)。瑞舒伐他汀药物干预8周后处死动物,观察心房自主神经分布改变,检测心房酪氨酸羟化酶(TH)mRNA表达水平。结果与假手术组比较,心肌梗死组TH与胆碱乙酰转移酶(CHAT)表达阳性神经纤维密度增加,TH mRNA相对表达量明显升高,且差异均有统计学意义(P<0.05);与心肌梗死组比较,药物干预组TH与CHAT阳性神经纤维密度减少,TH mRNA相对表达量减少,差异亦均有统计学意义(P<0.05)。结论瑞舒伐他汀对MI后心房神经重构具有抑制效应。     

氟伐他汀与瑞舒伐他汀对冠心病患者的降脂疗效比较

选取我院2012年10月~2013年8月收治的200例冠心病患者,并随机将所有患者分成2组各100例,其中氟伐他汀组采取氟伐他汀进行治疗,瑞舒伐他汀组采取瑞舒伐他汀进行治疗。对比两组在治疗前后高密度脂蛋白胆固醇(HDL-C)、低密度脂蛋白胆固醇(LDL-C)以及总胆固醇(TC)、三酰甘油(TG)、超敏C反应蛋白(hs-CRP)的水平差别。结果在接受治疗半个月后,两组患者的LDL-C、TC、TG、hs-CRP均有所下降,而HDL-C均有升高,且两组均无不良反应发生,安全可靠,但瑞舒伐他汀对冠心病患者的降脂效果优于氟伐他汀组,且安全可靠,值得在临床上进一步推广。     

瑞舒伐他汀钙对动脉粥样硬化性血栓性脑梗死患者血脂及神经功能的影响

目的:探讨瑞舒伐他汀钙对动脉粥样硬化性血栓性脑梗死患者血脂及神经功能的影响.方法:选择2017年9月～2018年9月收治的动脉粥样硬化性血栓性脑梗死患者78例,以随机数字表法分为对照组和观察组各39例.对照组给予常规治疗,观察组给予常规治疗结合瑞舒伐他汀钙治疗,比较两组患者血脂及神经功能.结果:观察组治疗后总胆固醇、三...     

瑞舒伐他汀与阿托伐他汀治疗冠心病的临床对比

选取我院自2011年1月~2012年1月收治的92例冠心病患者,随机将其分为观察组和对照组各46例,给予观察组患者瑞舒伐他汀治疗,给予对照组患者阿托伐他汀治疗,对两组患者治疗前后低密度脂蛋白胆固醇(LDL-C)、总胆固醇(TC)、三酰甘油(TG)的变化情况及不良反应情况进行对比。两组患者治疗前LDL-C、TC、TG指标对比均无显著差异,(P0.05),治疗后两组患者的各项治疗均有所改善,但观察组患者的改善情况明显优于对照组(P0.05),两组患者均未出现严重不良反应现象。给予冠心病患者瑞舒伐他汀与阿托伐他汀均能起到良好的治疗效果,但两者相比瑞舒伐他汀的效果更为显著,值得推广和应用。     

瑞舒伐他汀与阿托伐他汀治疗冠心病的疗效对比分析

选取2013年5月~2015年5月于本院就诊的冠心病患者共84例,患者按入院编号随机均分为观察组与对照组各42例,对照组给予阿托伐他汀治疗;观察组给予瑞舒伐他汀治疗,比较疗效。观察组患者接受治疗后,血脂水平变化情况明显优于对照组,且治疗总有效率(97.6%)明显高于对照组(81.0%),组间治疗效果比较具有明显差异(P0.05)。临床治疗冠心病,采用瑞舒伐他汀治疗可有效改善患者机体功能指标,提升治疗效果,值得推广。     

THE EFFECT OF CHEMICAL CARCINOGENS ON VIRUS-INDUCED RABBIT PAPILLOMAS

The application of methylcholanthrene and tar to virus-induced papillomas of the domestic rabbit caused them to become carcinomatous with great rapidity, and the malignant changes were frequently multiple. In bringing on the cancers the chemical agents acted in their specific capacity as carcinogens, not as ordinary stimulants of cell proliferation. The cancers derived from the virus-infected cells and were of the same types as arise from these elements spontaneously after a much longer time. The evidence would seem to indicate that the chemical carcinogens acted by way of the virus.     

纳洛酮对清醒家兔失血性休克的治疗作用

本文观察了纳洛酮对清醒家兔失血性休克的治疗作用。实验显示，纳洛酮0．1mg/kg与氢化可的松10mg／kg对血压及存活率无明显影响，去甲肾上腺素0．025mg／kg仅对血压有一过性升高。纳洛酮1．0及2．0mg／kg可使血压升高3．5－3．7kPa，持续30－60分钟，动物存活率平均提高75％，与对照组比较差别显著（P＜0．05），结果表明，纳洛酮对失血性休克低血压治疗有效，为临床应用提供了依据。     

THE EFFECT OF GUM SHELLAC SOLUTION ON THE SURFACE TENSION OF RABBIT SERUM

Following the intravenous injection of a gum shellac solution which alters the peripheral blood picture there is an increase in the time-drop of the diluted serum. This is believed to indicate changes in the physicochemical state of the plasma. This gum shellac solution behaves as a surface-active substance; its effect on the surface tension of serum is hindered by the du Noüy phenomenon of adsorption on serum molecules.     

硬脊膜外腔阻滞对兔神经根病理学影响的实验研究

目的：通过观察脊髓、神经根的超微结构变化，了解利多卡因、罗哌卡因注入硬膜外腔后对已损伤神经根的组织病理学影响。方法：实验用大白兔30只，硬膜外腔置管成功后随机分5组，每组6只。L组：注入利多卡因。R组：注入罗哌卡因。S组：在置管同一间隙损伤一侧神经根。SL组：损伤一侧神经根后注入利多卡因。SR组：损伤一侧神经根后注入罗哌卡因。除S组外，余均每隔12小时注药一次，连续2日，第七日灌杀、固定、取材，进行光镜电镜观察。结果：SL组、SR组有明显的细胞器变性及神经根脱髓鞘等改变。结论：临床操作出现神经根损伤时，应慎用椎管内阻滞。     

EFFECT OF REMOVAL OF CHOLESTEROL DIET UPON SERUM SICKNESS-CHOLESTEROL-INDUCED ATHEROSCLEROSIS

In this report, the role of vascular allergy (i.e., hypersensitivity) in the potentiation of atherogenesis has been studied. In order to accomplish this, bovine serum albumin (BSA) was administered to rabbits in quantities sufficient to cause the occurrence of serum sickness (a type of hypersensitivity known to cause injury to the endothelial linings of certain blood vessels). This was immediately followed by the feeding of a special cholesterol-supplemented diet, which is known to be capable of initiating a high incidence of atheromatous disease in rabbits after prolonged feeding. Results indicated that those animals which received the combined treatment developed an incidence of pathology after only 2 wk of special diet which was not equaled in the diet-only control groups until they had been treated for 4 wk. This indicated that vascular allergy could potentiate lipemia-induced atherogenesis in the rabbit, and was in confirmation of an earlier study of a similar nature. Indeed, because of the relatively mild vascular injury caused by a single injection of BSA, it would seem as though vascular hypersensitivity was extremely effective in the potentiation of atherogenesis. In addition, these results may have given some indication of the degree of vascular injury necessary for the induction of irreversible atheromatous disease. While the incidence of lesions in serum sickness controls was seen to decrease with passage of time after BSA challenge, it appeared to increase after cessation of treatment in those animals which received the combined treatment of BSA plus 2 wk of cholesterol-supplemented diet. It would therefore appear that the atheromatous lesions seen as early as 2 wk after initiation of the experiment may already have been irreversible in terms of the resolution of established pathology.     

THE EFFECT OF UNDERNOURISHMENT ON THE SUSCEPTIBILITY OF THE RABBIT TO INFECTION WITH VACCINIA

Experiments are reported in which it is shown that if rabbits are deprived of food, the lesions resulting from injection of vaccinia are either fewer or smaller; presumably this is partially explainable on reduction of available nutrients in the cell. The number and character of the lesions are also modified by the state of hydration of the interstitial tissues: If the amount of interstitial fluid is increased by permitting the animal to drink water, the lesions are even less numerous; but if the interstitial tissues are dehydrated either by withholding water or by injecting physiological saline solution into the peritoneal cavity, then the lesions are more numerous. The increase in interstitial fluids in these experiments was not due to decreased plasma proteins, for these were normal. In this respect, therefore, the rabbit differs from man, for unless the plasma proteins are reduced, simple starvation in man results in dehydration rather than edema of the tissues. From these experiments it is concluded that the virus is less able to multiply in the poorly nourished cell than in the well nourished one, and that hydration of the tissues increases the resistance of the tissue to infection while dehydration has the opposite effect. It is suggested that this is because hydration tends to localize the virus in situ, with result that fewer cells are exposed to it, while dehydration has the opposite effect. However, actual changes in cell susceptibility consequent upon altered water balance may be responsible for the effect.     

乌司他丁对兔体外循环中细胞间黏附分子的影响

目的探讨体外循环(CPB)对肺内的细胞间粘附分子 1(ICAM 1)变化规律及乌司他丁干预性治疗效果。方法选取纯种新西兰大白兔2 0只,随机分为乌司他丁(UTI)组10例,CPB组10例。前者在体外循环预充液中加入1万U/kgUTI,CPB开始后再经静脉给1万U/kg。分别于麻醉诱导后、主肺动脉阻断前、主肺动脉开放前、主肺动脉开放3 0min、停CPB、停CPB后4h共6个时点抽取肺静脉血,采用双抗体夹心法酶联免疫吸附试验测定血浆中ICAM 1的表达值。结果麻醉诱导后(基值)乌司他丁组和CPB组ICAM 1无明显差异(P >0 0 5 ) ;余5个时点2组ICAM 1表达量均明显增高,主肺动脉开放后有一突发增长,停CPB后呈缓慢下降,但乌司他丁组5个时点ICAM 1表达值均低于对照组(P <0 0 5 )。结论体外循环过程中肺内皮细胞表面ICAM 1表达量在主肺动脉开放后有一突发增长,在停CPB后呈缓慢下降,乌司他丁能使内皮细胞上ICAM 1表达上调减缓,减少肺内活化中性粒细胞与内皮细胞的粘附,减轻CPB引起的脏器功能损伤,有效提高CPB下心脏直视手术的成功率。     

Rosuvastatin and progression of atherosclerosis

Technological advances in arterial wall imaging have provided the opportunity to evaluate the impact of medical therapies on the progression of atherosclerosis in vivo. Arterial imaging has been extensively utilized to determine the impact of high-dose statin therapy. Using multiple imaging modalities in the carotid and coronary territories, rosuvastatin has been demonstrated to have a beneficial impact across the spectrum of cardiovascular risk. The impact of modifying levels of atherogenic lipids, HDL and markers of inflammation will be reviewed.