天麻钩藤饮对高血压病肝阳上亢证患者超氧化物歧化酶的影响

目的：观察天麻钩藤饮对高血压病（肝阳上亢型）患者血浆超氧化物歧化酶（SOD）的影响。方法：采用随机对照方法，观察天麻钩藤饮组（30例）和对照组（30例）治疗前后血压水平及血浆超氧化物歧化酶的变化。结果：两组治疗后血压明显降低，超氧化物歧化酶明显增高（P〈0．01，P〈0．05），组间比较无显著差异（P〉0．05）。结论：天麻钩藤饮能显著升高高血压病患者血浆超氧化物歧化酶的水平。     

Effects of different enzyme complex supplements in corn-soybean feedstuff on growth performance and nutrient utilization of broilers

A six-week experiment was conducted to investigate the effects of supplementing different enzyme cocktails in cornsoybean-byproduct diets on broiler chickens＇ growth performance and nutrient utilization. A total of 630 one-day-old Arbor Acre broiler chicks were randomly allocated to 7 experimental groups with 6 replicates of 15 chicks. The group of chicks serving as the control group were fed a basal diet made of mainly corn and soybean meal, mixed with a little fish meal, rapeseed meal and wheat bran. The other six groups were fed the same basal diet supplemented with each a different enzyme complex at the dosage of 0.75 kg enzyme in 1 t basal diet. At the same time, a metabolic trial was carded out on 42 chicks at the 27 d age. The results showed that the average daily mass gain （ADG） of chicks in the starter phase, age 1 d to 21 d, was improved by all enzyme complex supplements except the cocktail made of 230 IU/g α-amylase, 5.6 klU/g β-glucanase, 5.3 kIU/g cellulase, 15.5 kIU/g protease and 37.5 kIU/g xylanase. The enzyme cocktail made of 1.6 klU/g α-amylase, 80 klU/g protease and 1.6 kIU/g xylanase worked out the most significant difference （P〈0.05）. Enzyme supplementation decreased the feed conversion ratio （FCR） by 2.78% to 3.98% （P〉0.05）, indicating better utilization of nutritients. In the grower phase at the age from 22 d to 42 d, the enzyme cocktail made of 4.0 kIU/g β-glucanase, 3.8 kIU/g cellulase, 17.8 kIU/g protease, 4.5 kIU/g xylanase and 44 IU/g α-glactase, and that made of 240 IU/g α-amylase, 1.4.6 kIU/g β-glucanase, 2.0 kIU/g cellulase, 5.7 klU/g protease, 400 IU/g xylanase, 20 IU/g α- glactase and 200 IU/g phytase imporved chicks＇ ADG and FCR significantly （P〈0.05）. These two cocktails also were shown to improve ADG and FCR in the entire period of broiler age from 1 d to 42 d. Exogenous digesting enzymes such as protease and amylase benefited the growth and nutrition utilization in young broilers in the starter phase but barely in the grower phase, indicat     

肝癌患者血清SOD及MDA的变化研究

目的:探索肝癌患者血清SOD、MDA的变化。对肝癌患者26例和健康对照组30例。方法:对肝癌患者均应用改良TBA微量法测定血清丙二醛(MDA)、以黄嘌呤氧化酶法测定超氧化物歧化酶(SOD)水平的变化。结果:肝癌组患者血清MDA水平显著高于对照组(P<0.01),而血清SOD水平显著低于对照组(P<0.01)。结论:提示肝癌患者存在明显的抗氧化能力障碍,通过血清MDA、SOD水平的检测,可为肝癌的临床治疗及疗效观察提供一定的依据。     

Acute Renal Failure in Liver Transplant Patients: Indian Study

The acute renal failure is the frequent medical complication observed in liver transplant patients. The objective of this study was to determine the cause of acute renal failure in post liver transplant patients. A total of 70 patients who underwent (cadaveric 52, live 18) liver transplantation were categorized based on clinical presentation into two groups, namely hepatorenal failure (HRF, n = 29), and Hepatic failure (HF, n = 41). All the patients after the liver transplant had received tacrolimus, mycophenolate and steroids. We analyzed the modification of diet in renal disease, (MDRD) serum urea, creatinine and albumin before and after 5th and 30th day of liver transplant and data was categorized into survivors and non-survivors group. In HRF survivor group, serum creatinine, and urea levels were high and, albumin, MDRD were low in pre- transplant and reached to normal levels on 30th day of post transplant, and 79.3 % of patients in this group showed resumption of normal kidney function. On the contrary in HRF nonsurvivor group, we did not observed any significant difference and 20.7 % of patients showed irreversible changes after the liver transplant. In HF survivor group, 82.9 % of liver failure patients did not show any deviation in serum creatinine, urea, albumin and MDRD, whereas in HF non survivor group, 17.1 % of liver failure patients who had HCV positive before the transplant developed acute renal failure. The levels of creatinine, urea, albumin and MDRD were normal before the transplant and on day 30th, the levels of albumin and MDRD were significantly low whereas serum urea, creatinine levels were high. In conclusion, based on these observations, an diagnosis and treatment of Acute renal failure is important among the liver transplantation cases in the early postoperative period.     

增强UV-B辐射对蚕豆幼苗叶片抗氧化保护系统的影响

采用人工增强UV-B辐射的方法,研究了在不同强度UV-B辐射下,蚕豆幼苗保护酶活性及抗氧化物质含量的变化。结果表明:在本试验条件下,随辐射强度增加,POD活性上升,CAT活性下降,短期低强度的UV-B辐射下ASA含量增加,增强的UV-B辐射显著抑制类胡萝卜素的合成。     

强电场电离放电对水稻幼苗生长生物学效应的试验性研究

为了研究强电场电离辐射对水稻种子酶活性的影响,在相同激励电压下,用不同时间辐射国稻6号水稻种子。发现用160V激励电压分别辐射10s、15s、20s、25s、30s、50s的试验组与对照组相比,淀粉酶、过氧化氢酶（CAT）和过氧化物酶（POD）的活性均有明显提高,淀粉酶辐射时间为25s效果最好,而CAT和POD辐射时间为25—30s时效果最佳。实验表明强电场电离辐射能促进水稻幼苗的生长发育和蛋白质合成,并降低活性氧对幼苗的损害。     

Monitoring Coagulation Proteins During Progression of Liver Disease

This work was designated to monitor the coagulation abnormalities associated with the gradual progression of liver diseases. The study included fifty patients; forty were diagnosed with liver cirrhosis with different stages categorized according to the Childs-Pugh classification and another ten patients were diagnosed with hepatocellular carcinoma (HCC). Haemostatic variables including fibrinogen (FI), calcium (FIV), transglutaminase (FXIII), prothrombin time (PT) and platelet count were estimated in patients and compared with the baseline levels of healthy subjects (n = 10). The results demonstrated that the fibrinogen level was progressively decreased, whereas PT was progressively prolonged in Child A, Child B and Child C groups. The maximum deterioration was observed in HCC patients. Calcium significantly increased in mild (Child A) and moderate (Child B) but not in Child C cirrhosis and HCC patients. FXIII level did not show any significant changes in cirrhotic patients compared to healthy group. Some of the haemostatic variables we investigated were correlated with serum albumin and bilirubin but not with aminotransferases (ALT and AST). The results indicated that the haemostatic abnormalities in fibrinogen, calcium and PT (but not FXIII) were deteriorated in parallel with the gradual regression of the constitutional function of liver.     

感染白粉病后不同葡萄品种的一些酶活性变化

植物受到病原菌侵染或被诱导处理后能产生一些诱导型抗病物质的合成或直接作用于病原菌的酶类和抗病酚类物质,利用这特性研究葡萄对白粉病的抗性.16个不同的葡萄品种接种白粉病后,测定POD、PPO、PAL等三种酶的酶活性差异,结果发现,接种白粉病后葡萄叶片三种酶活性水平均有提高,其中POD酶活性变化较PPO和PAL明显,PPO...     

递增负荷有氧运动对老龄雌性大鼠心肌抗氧化酶及心肌线粒体超微结构的影响

目的：探讨长时间递增负荷有氧运动对老龄雌性大鼠心肌抗氧化酶活性和心肌线粒体超微结构的影响。方法：健康雌性18月龄SD大鼠30只,随机分为两组：老龄运动组和老龄对照组,每组15只;另安排15只3月龄SD大鼠作为年青对照组。采用20周递增负荷跑台运动建立中老年大鼠有氧运动模型,运动方案结束后取心肌组织,检测心肌组织SOD、GSH-Px、CAT活性和MDA含量,并采用透射电镜观察大鼠心肌组织线粒体超微结构的变化。结果：（1）递增有氧运动能显著提高心肌SOD、GSH-Px活性,显著降低心肌MDA含量,但CAT活性未见显著提高;（2）递增有氧运动能改善心肌线粒体因衰老导致的形态改变,延缓心肌线粒体退行性变化。结论：（1）递增有氧运动能提高老龄大鼠心肌抗氧化酶活性,降低老龄运动组大鼠心肌MDA含量,保护心肌组织因衰老而导致的自由基的损害;（2）长期递增有氧运动能改善老龄大鼠心肌线粒体结构,保护线粒体膜和嵴的完整性,延缓心肌线粒体因衰老而导致的退行性变化。     

Analyzing and modeling rheological behavior of liver fibrosis in rats using shear viscoelastic moduli

研究目的：肝脏的纤维化进程改变肝脏组织的流变属性。创新要点：本文利用剪切黏弹性模量描绘并比较了大鼠肝脏F0期到F4期的纤维化过程。研究方法：两个黏弹性模型,即Zener模型和Voigt模型用于解释流变力学测试得到的实验数据,由此得到每个纤维化分期的肝脏弹性和黏性值。重要结论：肝脏中度纤维化（≤F2期）与黏弹性值密切相关。Zener模型的弹性均值E1从F0期的（0.452±0.094）kPa增加到F2期的（1.311±0.717）kPa,而Voigt模型的弹性均值E从F0期的（0.618±0.089）kPa增加到F2期的（1.701±0.844）kPa。Zener模型的黏性均值从F0期的（3.499±0.186）Pa·s增加到F2期的（4.947±1.811）Pa·s,而Voigt模型的黏性均值从F0期的（3.379±0.316）Pa·s增加到F2期的（4.625±1.296）Pa·s。无论选用哪个黏弹性模型,在F1期和F2期,肝脏弹性值的标准差比黏性值的标准差变化要小。因此,测得的弹性比黏性更有效地区分肝纤维化F0期到F2期。