The Effects of "Huoxuequyu" Decoction on Lipid Peroxidation in IUGR Rats

ＴｈｅＥｆｆｅｃｔｓｏｆ＂Ｈｕｏｘｕｅｑｕｙｕ＂ＤｅｃｏｃｔｉｏｎｏｎＬｉｐｉｄＰｅｒｏｘｉｄａｔｉｏｎｉｎＩＵＧＲＲａｔｓＷＡＮＧＫａｉ－ｆｕ（王开富）；ＨＡＮＱｉｎｇ－ｈｏｎｇ（韩庆红）；ＳＨＵＨｕ－ｙｉｎｇ（舒沪英）；ＹｅＷａｎｇ－ｙｕｎ（叶望...     

Effect of Huoxuequyu Recipe on Erythrocyte Ultrastructure and Membrane ATPase Activity in Rats with Passive Smoking

ＥｆｆｅｃｔｏｆＨｕｏｘｕｅｑｕｙｕＲｅｃｉｐｅｏｎＥｒｙｔｈｒｏｃｙｔｅＵｌｔｒａｓｔｒｕｃｔｕｒｅａｎｄＭｅｍｂｒａｎｅＡＴＰａｓｅＡｃｔｉｖｉｔｙｉｎＲａｔｓｗｉｔｈＰａｓｓｉｖｅＳｍｏｋｉｎｇＣＨＥＮＺｈｕｏ（陈琢），ＪｉＡＯＸｉｎｆｕ（焦新...     

Effects of Coptis chinensis on Lipid Peroxidation and Antioxidases Activity of Rats

ＥｆｆｅｃｔｓｏｆＣｏｐｔｉｓｃｈｉｎｅｎｓｉｅｏｎＬｉｐｉｄＰｅｒｏｘｉｄａｔｉｏｎａｎｄＡｎｔｉｏｘｉｄａｓｅｓＡｃｔｉｖｉｔｙｏｆＲａｔｓＳｏｎｇＬｕ－ｃｈｅｎｇ（宋鲁成）；（ＳｈａｎｄｏｎｇＱｉａｎｆｅ－ｓｈａｎＨｏｓｐｉｔａｌ，Ｊｉｎａｎ）...     

A Study on Mechanism in Preventing and Treating Gastric Ulcer with Os Sepiella in Rats

ＡＳｔｕｄｙｏｎＭｅｃｈａｎｉｓｍｉｎＰｒｅｖｅｎｔｉｎｇａｎｄＴｒｅａｔｉｎｇＧａｓｔｒｉｃＵｌｃｅｒｗｉｔｈＯｓＳｅｐｉｅｌｌａｉｎＲａｔｓＦａｎｇＥｒ－ｌｉ（方尔笠）；ＧｕＬｕｏ（顾洛）；ＴｉａｎＳｕ－ｐｉｎｇ（田苏平）；ｅｔａｌ（Ｄｅｐａｒｒ...     

Immunoregulatory Effects of Indomethacin on Rats with Trauma

ＩｍｍｕｎｏｒｅｇｕｌａｔｏｒｙＥｆｆｅｃｔｓｏｆＩｎｄｏｍｅｔｈａｃｉｎｏｎＲａｔｓｗｉｔｈＴｒａｕｍａＰＡＮＹｏｎｇ－ｃｈｅｎｇ（潘永成）；ＺＨＡＮＧＳｈｏｕ－ｘｉ（张寿熙）；ＤＩＮＧＸｉａｎ－ｚｈｏｎｇ（丁显仲）；ＬＩＨｕａ（李桦）（Ｄｅｐａｒ...     

Effects of Danshen Injection on the Malignant Obstructive Jaundice in the SD Rat Model

A malignant obstructive jaundice model[1] was es-tablished in rats by inoculation of transplanted tumor (inoculated with the Walker-256 hepatocarcine line) into the hepatic portal of SD mouse to cause obstruction of the biliary tract by the infiltration and metastasis of hepatocellular carcinoma. The effect of Danshen on the growth of hepatocellular carcinoma in the malignant ob-struction jaundice in the SD rat model was studied and the effect of Danshen was compared with other agents in ter…     

Effects of Ligustrazine on Myocardial Fibrosis in Rats with Pressure Overload

Objective: To investigate the effects of ligustrazine (Li) on myocardial fibrosis in rats with pressure overload. Methods: Pressure overload rat models were established by constricting the abdominal aorta. Sixty-three SD rats were divided into 3 groups: Sham operated group (SOG, n=21), operated group (OG, n=21) and operated combined with ligustrazine group (OG Li, n=21). Each group was randomly assigned to seven time points: The 1st, 2nd, 4th, 7th, 14th, 21st and 30th day after operation. Three rats were included in each time point. Serial sections of cardiac tissues were examined and the morphological or morphometric analysis of the SOG, OG and OG Li done by histopathological and computer image analyzer technique. Results: (1) It showed that there were reactive fibrosis (from the 4th day on after operation) and reparative fibrosis (from the 21st day on after operation) in the OG, while myocardial fibrosis in the OG Li was alleviated. Though reactive fibrosis (from the 21st day on after operation) was shown, reparative fibrosis wasn′t seen. (2) Perivascular collagen area (PVCA) in the OG (2. 09±0. 45) was significantly higher than SOG (0.83±0.06) from the 1st day on after operation and then steadily increased, while in the OG Li (1. 16±0.06), it was significantly lower than OG at the same time; collagen volume fraction (CVF) in the OG (3. 08±0.56) significantly increased compared with the SOG (2. 78±0.64) from the 2nd day on after operation and showed a trend of rapid ascending from the 21st day on after operation; and in the OG Li (4. 69±0.85), it was significantly decreased compared with the OG (7. 56±0.88) from the 21st day on after operation, with all P＜0. 05. Conclusion: Ligustrazine could alleviate and postpone the accumulation of myocardial collagen and has protective effects on the heart.     

Protective Effects of Hyperpolarizing Cardioplegia with Pinacidil on Myocardium in Rats

Whether the ATP-sensitive potassium channel opener pinacidil can provide myocardial protective effects in prolonged isolated global ischemic rat heart was investigated. On modified isolated rat working heart model, 40 hearts were divided into four groups randomly: Hyperpolarized arrest H-K solution containing pinacidil (50 tmol/L) (P1 and P2) and depolarized arrest St. Thomas‘ solution (S1 and S2) subjected to 15 C hypothermia, 60 min (P1 and S1) or 120 min (P1 and S2) of ischemia and 30 min reperfusion. The experimental indices included cardioplegic efficiency, cardiac function, coronary blood flow, myocardial enzyme release, myocardial water and ATP content. Hyperpolarized arrest provided significantly better recovery of cardiac function than depolarized arrest.Postischemic coronary flow and myocardial ATP content were higher. The arrest time of electro-mechanical activities were longer than depolarized arrest. There were no differences among the groups in myocardial water contents. The hyperpolarized arrest solution containing pinacidil can provide a marked myocardial protective effect during prolonged hypothermic myocardial ischemia.     

Role of Lipid Peroxidation in Bacterial Translocation from the Small Intestine after Thermal Injury in Rats

Oxygen-derived free radicals have bran proved to play a role in the intestinalmucosa damage induced by ischemic reperfusion after burns,but their role in thebacterial translocation from the intestine to other organs is not documented so far.Theauthors intended to investigate this problem on 186rats,which were randomized into 5groups:the normal control group,the group receiving oral Pseudomonas,the group ofsimple burn injury,and the groups of combined oral Pseudomonas and burn injury withor without superoxide dismutase(SOD)treatment.The burn injury was 30% TBSA fullthickness scalding.The oral administered Pseudomonas was labdled with isothiocyanatefor tracing.The animals were killed in the 4th,12th,24th,48th,or 72nd hour afterinjury respectively.The changes of malondialdehyde(MDA)in the ilcal mucosa were ob-served with optical and electron microscope,and bacterial translocation from the intes-tine to the liver and blood stream was traced .The animals with combined injury and simple burns showed a marked increase ofileal mucosal MDA with the peak in the 12th hour accompanied with intense pathologicalchanges in the small intestine;the incidence of bacterial translocation from the intestineto other organs also increased.With SOD treatment,the MDA levd in the ileal mucosawas significantly lower,the pathological changes in the intestinal mucosa were allevia-ted,and the incidence of bacterial translocation from the intestine was lowered with nolabdled Pseudomonas isolated from the blood stream.In this study,it was demonstrated that free radicals are one of the factors ofintestinal mucosal damage and bacterial translocation from the intestine after burns,andSOD could protect the intestinal mucosal barrier from being injured and inhibit thebacterial translocation from the intestine.     

Comparative Study on the Effects of Self-made Liver Preservation Solution on Secretion of ICAM-1 and NO in Rats

In order to study the effect of self-made liver preservation solution on liver preservation by comparing with UW solution and HC-A solution, the self-made liver preservation solution （SM） and perfusion solution were prepared under the aseptic conditions. The isolated non-circulated perfusion rat liver model was established. According to the different preservation solutions, the rats were randomly divided into UW group, SM group and HC-A group. The three groups were divided into 6 subgroups according to the preservation duration （n=6 in each group）. The transferase in liver perfusion solution and intercellular adhesion molecule-1 （ICAM-1） and nitric oxide （NO） in liver tissues were determined at 2, 8 and 24 h respectively. The results showed that the levels of alanine aminotransferase （ALT） and aspartate aminotransferase （AST） had no significant difference between SM group and UW group, but significantly lower than in HC-A group. The levels of ICAM-1 and NO were increased simultaneously in SM group and UW group （P〉0.05）, but there was significant difference as compared with HC-A group （P〈0.05）. At the same time point, the level of ICAM-1 was higher in SM group than in UW group, but NO was lower. The preservation effect of SM solution is the same as UW solution, but better than HC-A solution.     

Study on the effects of “Foshousan” plus Danshen in preventing IUGR rats with passive smoking from peroxidation in erythrocyte lipid

Summary The pregnant rats with cigarette smoking exposure were used as the animal model for studying the pathogenesis of IUGR. The mechanism of preventing intrauterine growth retardation with “Foshousan” plus Danshen by protecting erythrocytes against lipid peroxidation damage was also preliminarily discussed. The erythrocyte membrane lipid peroxide content, erythrocyte SOD activities were detected by ultraviolet split-beam spectrophotometry and chemiluminescence technique. The results showed that theerythrocyte MDA levels and ratio of abnormal erythrocyte in model group were significantly higher than those in control group and treated group, and the fetal mean birth weight, erythrocyte SOD levels were all statistically significantly lower than those in control group and. treated group. The fetal birth weight showed a significant positive correlation with SOD levels and a significant negative correlation with MDA level. The results suggest “Foshousan” plus Danshen can protect erythrocytes against lipid peroxidation damage, thus conserving the normal form, structure and function of erythrocytes, improving the uteroplacental blood flow and thereby increasing the fetal mean birth weight. This project was supported by the National Natural Science Foundation.     

活血化瘀方抗孕鼠红细胞脂质过氧化损伤的研究

采用紫外分光光度法和化学发光技术检测了自由基对被动吸烟所致宫内胎儿发育迟缓（ＩＵＧＲ）孕鼠红细胞膜脂质过氧化物（ＬＰＯ）和红细胞超氧化物歧化酶（ＳＯＤ）的影响，并在透射电镜下观察红细胞形态及超微结构．结果表明：模型组孕鼠红细胞丙二醛（ＭＤＡ）水平、异形红细胞出现率显著高于对照组和用药（活血化瘀方）组，模型组胎仔平均出生体重及红细胞ＳＯＤ水平均显著低于对照组和用药组，而用药组与对照组之间差异无显著意义；胎仔平均出生体重分别与ＳＯＤ水平呈显著正相关，而与ＭＤＡ水平呈显著负相关，表明红细胞脂质过氧化损伤是引起ＩＵＧＲ的一个重要因素．实验结果还提示活血化瘀方可抗脂质过氧化损伤，保护红细胞正常形态、结构和功能，从而改善胎盘循环，是其促进胎儿生长的机理之一．     

采用被动吸烟法建立胎仔宫内发育迟缓大鼠模型

将雌性ＳＤ大鼠分为４组,Ａ组交配后第一天起,Ｂ组交配后第１０天起每天在隔离器内被动吸烟２ｈ至第２０天,Ｃ组为普通环境不吸烟对照组,Ｄ组为每天在隔离器内饲养２ｈ不吸烟对照组。实验结果显示,Ａ,Ｂ,Ｃ组胎内活仔体重分别为２．０±０．７,２．８±０．５,３．７±０．４ｇ;宫内发育迟缓（ＩＵＧＲ）发生率分别为８７％,５９．６％,５％;体长分别为２．８４±０．４２,３．２４±０．３０,３．９４±０．２２ｃｍ;尾长分别为０．９６±０．１６,１．０７±０．１４,１．３４±０．１０ｃｍ;胎盘重量分别为０．４８±０．１２,０．５０±０．１１,０．６２±０．４０ｇ;Ｄ组各项指标与Ｃ组比较无显著差异。正常对照Ｃ组和不吸烟对照组Ｄ组胚胎早期吸收或死胎率仅为３．４５％和４．１９％,而被动吸烟的Ａ,Ｂ组分别为３２．４％与１６．１％,均明显高于对照组,表明被动吸烟对胚胎的存活也有很大的威胁。本研究结果提示,利用隔离器和大鼠建立被动吸烟致ＩＵ－ＧＲ动物模型,具有吸烟环境易控制,重复性好,实验周期短,ＩＵＧＲ发生率高的优点     

早期营养对IUGR大鼠糖耐量和胰岛素敏感性的远期影响

【目的】了解宫内发育迟缓(IUGR)和生后早期蛋白质营养不良对IUGR大鼠糖耐量和胰岛素敏感指数(ISI)及胰岛素抵抗指数(IRI)的远期影响。【方法】采用被动吸烟法制作IUGR大鼠动物模型,新生正常鼠仔102只和IUGR鼠仔105只随机分为4组:①正常对照组;②IUGR模型组;③正常大鼠低蛋白饮食组(CLP组);④IUGR大鼠低蛋白饮食组(SLP组)。观察各组大鼠在生后4周(幼年期)、12周(成年期)和48周龄(老年期)时糖耐量和胰岛素释放试验变化。【结果】①SLP组大鼠宫内发育迟缓和生后早期蛋白质营养不良其远期葡萄糖-胰岛素代谢功能受损明显,至48周时空腹血糖(5.2±1.4)mmol/L已升高,胰岛素(31. 2±3.4)mU/L水平明显升高,ISI(1.7±0.4)明显下降,IRI(8.7±1.8)明显升高,与正常对照组[(4.5±1.1)mmol/L,(12.9±1.0)mU/L和2.8±0.2,2.3±0.41比较均有显著性差异(P<0.05或P<0.01)。②CLP组大鼠生后早期单纯蛋白质营养不良的远期影响主要表现为糖负荷后胰岛素对血糖升高的应答分泌反应延迟和糖耐量减低。③IUGR模型组大鼠生后即给予正常营养供给,其葡萄糖-胰岛素代谢紊乱的程度减轻,但仍有糖耐量减低。【结论】在宫内和/或生后早期机体发育的关键时期,蛋白质营养不良将对葡萄糖-胰岛素代谢功能产生长期的不良影响,主要表现为糖耐量减     

调和油对大鼠血脂及脂质过氧化的影响

目的为改善人群油脂营养提供科学依据。方法３０只ＳＤ系雄性大鼠随机分为３组，分别给予基础饲料、含１２％猪油饲料及含１２％调和油（主要由豆油和菜油调制而成）饲料喂饲２１ｄ。结果猪油组（阳性对照）大鼠血清总胆固醇（ＴＣ）、血清ＴＣ／ＨＤＬｃ及血清脂质过氧化产物丙二醛（ＭＤＡ）水平均显著高于基础组（阴性对照，Ｐ＜０．０５）；调和油组血清ＴＣ、甘油三酯（ＴＧ）及ＭＤＡ水平均显著低于猪油组（Ｐ＜０．０５）；调和油组血清ＴＧ显著低于基础组（Ｐ＜０．０５）。结论调和油可以作为比较理想的食用油。     

早期营养干预改善 IUGR大鼠胰岛素抵抗及其与血清瘦素的关系

【目的】探讨生后早期不同饮食构成喂养对宫内生长迟缓(IUGR)大鼠胰岛素抵抗的远期影响及其与瘦素、腹部内脏脂肪的相关关系。【方法】IUGR新生雌鼠48只和正常新生雌鼠10只随机分为5组予下述相应饮食饲料喂养母鼠3周:①IUGR模型组(S/N组)予常规饮食,②IUGR高碳水化合物饮食组(A组),③IUGR高脂肪饮食组(B组),④IUGR高蛋白质饮食组(C组)⑤正常对照组(C/N组)予常规饮食。第4周起各组幼鼠断乳后均予常规饮食饲料喂养至实验结束。各组大鼠于12周(成年期)分别测定体质量、肾周脂肪质量(肾脂)、血清瘦素、血糖、胰岛素并计算胰岛素敏感指数(ISI)、胰岛素抵抗指数(IRI)。【结果】12周时IUGR模型组大鼠肾脂增多,血清瘦素和IRI升高、ISI下降(P<0.05)。IUGR高蛋白饮食组体质量(242.6±17.5)g虽高于C/N组(192.1±37.2)g,但与S/N组(213.4±27.3)g比较无显著性差异(P>0.05),且不伴肾脂(1.46±0.67)g增多,血清瘦素(0.43±0.26)μg/L、ISI(4.47±0.45)和IRI(0.78±0.45)也与正常对照组(1.41±0.42)g,(0.42±0.34)μg/L,4.46±0.42和0.77±0.31比较差异无统计学意义(P>0.05)。【结论】生后哺乳期给予高蛋白质饮食早期营养干预然后恢复正常饮食,可使IUGR大鼠既能达到体格追赶生长,又可避免其成年后胰岛素敏感性下降而产生I     

不同价态的锰对老年大鼠体内脂质过氧化的影响

为观察不同价态的锰染毒后对 18月龄大鼠体内脂质过氧化的影响 ,将大鼠经腹腔分别注射氯化锰(MnCl2 ·4H2 O ,Mn2 + )、醋酸锰 (C6H9O6Mn·2H2 O ,Mn3 + ) ,连续染毒 1个月后 ,测定大鼠脑、肝、心肌组织中的丙二醛(MDA)质量摩尔浓度及超氧化物歧化酶 (SOD)活性。结果 :不同价态锰染毒后大鼠脑组织MDA质量摩尔浓度、SOD活性与对照组相比有显著性差异 (P <0 .0 5) ;肝组织的SOD活性与对照组相比有显著性差异 (P <0 .0 5) ,MDA的质量摩尔浓度只有Mn2 + 组与对照组相比有显著性差异 (P <0 .0 5) ;而心肌组织的MDA质量摩尔浓度、SOD活性Mn2 +组、Mn3 + 组与对照组相比均无显著差异。提示 :不同价态锰染毒对不同组织的毒性效应是不同的     

Effect of "Jia Wei Fo Shou San" on Erythrocyte Membrane Calcium,Zinc Concentration in Pregnant Rats with Asymmetrical Intrauterine Growth Retardation Induced by Passive Smoking

Withthedevelopmentofcellbiologyandmetallicelementresearch,ithasbeenfoundthatthecontentsofcalciumandzinchaveacloserelationshipwithfetalgrowth['.'].However,theeffectsofcalcium,zincoferythrocytemembraneonfetalgrowthhasnotbeenreported.Thisstudy,byusingexperimentalmodelofpregnantratswithasymmetricalintrauterinegrowthretardation,inducedbypassivesmoking,observedtherelationshipbetweenfetalgrowthinuterineandthecontentofcalcium,zinconmembraneoferythrocytes.1MATERIALSANDMETHODS1.1AnimalsFemaleSpr…     

抗栓酶－3号对实验性矽肺兔脂质过氧化的影响

将抗栓酶－３号（Ｓｖａｔｅ－３）注入实验性矽肺白兔耳静脉（０．２Ｕ／ｋｇ）观察６月。结果：实验组血浆和肺组织的丙二醛、血清羟脯氨酸及肺组织胶原蛋白的含量明显低于对照组；但肺组织的ＳＯＤ含量明显而于对照组。提示Ｓｖａｔｅ－３有一定的抗脂质过氧化和抗纤维化的作用。