Dried green leaf powders of Jew's mellow (Corchorus), persimmon (Diosphyros kaki) and sweet potato (Ipomoea batatas poir) lower hepatic cholesterol concentration and increase fecal bile acid excretion in rats fed a cholesterol-free diet   总被引：1，自引：0，他引：1  

Innami  Satoshi  Tabata  Kimiko  Shimizu  Jun  Kusunoki  Kikue  Ishida  Hiroshi  Matsuguma  Miki  Wada  Masahiro  Sugiyama  Noriko  Kondo  Mika 《Plant foods for human nutrition (Dordrecht, Netherlands)》1998,52(1):55-66

A cholesterol-free diet containing dried powder of Jew's mellow leaves, persimmon leaves or sweet potato leaves respectively at 5% level as dietary fiber was fed to male Sprague-Dawley rats for about one month. The experiment was conducted twice except for sweet potato leaves. In the groups fed the diet mixed with powders of any of the three different dried green leaves, the hepatic cholesterol concentration significantly decreased. Such lowering was not observed in serum cholesterol concentration compared with the control (cellulose) group. A significant increase in fecal weight was observed in all the groups fed the green leaf samples. All the dried green leaves increased fecal excretion of bile acids per gram or per day compared with the control group in both experiments, but only the dried Jew's mellow leaves showed an increased excretion of neutral sterols. These results suggest that lowering of hepatic cholesterol by powdered green leaves is not necessarily due to the same factor, but to the increased fecal excretion of bile acids due to inhibited enterohepatic circulation in animals given these samples.  相似文献   

大豆黄酮、脱脂乳对猪源芽孢乳杆菌S1耐受酸和胆盐的影响     

苏勇  毛胜勇  姚文  朱伟云 《南京农业大学学报》2005,28(1):128-130

通过体外实验研究了大豆黄酮和脱脂乳对芽孢乳杆菌S1在不同pH值和不同浓度胆盐下存活能力的影响。结果表明, 与对照组相比, 添加 10mg·mL-1的脱脂乳显著提高了S1在pH分别为 2 6、3 7条件下的存活数量, 并且也能显著提高S1在 1、2和 3mg·mL-1胆盐浓度条件下的存活数量, 说明脱脂乳对S1有显著的保护作用。添加 50mg·L-1的大豆黄酮也显著提高S1耐胆盐的能力, 但对S1耐受酸能力有负效应。  相似文献   

Effect of dietary bile extracts on serum response of astaxanthin in rainbow trout (Oncorhynchus mykiss): a preliminary study     

M.M. Mendes-Pinto  G. Choubert  & R. Morais 《Aquaculture Nutrition》2004,10(6):353-357

Effects of porcine bile extracts added at three different dietary concentrations 0, 10 and 20 g kg^?1 were studied on astaxanthin serum concentration in rainbow trout (mean weight 200 ± 7 g). Astaxanthin from micro‐algae Haematococcus pluvialis and synthetic astaxanthin (CAROPHYLL® pink) were incorporated in diets of rainbow trout at a rate of 100 mg astaxanthin kg^?1 of feed. Fish were hand fed twice a day. After 5 days of feeding there was a significant effect of the pigment source on the ratio (total blood astaxanthin per unit body weight to cumulative astaxanthin intake per unit body weight). Trout receiving synthetic astaxanthin showed a significantly (P < 0.05) higher ratio than trout fed algal astaxanthin. Increasing dietary bile extract did not lead to produce any effect on this ratio. The power of the statistical analysis is discussed. Therefore, the interaction (pigment source × dietary bile concentration) showed no more effect.  相似文献   

胆汁酸对齐口裂腹鱼幼鱼脂肪沉积、脂肪代谢酶活性及相关基因表达的影响     

向枭  曾本和  王睿  许耀升  周兴华  陈建  李代金  朱成科  林仕梅 《水产学报》2022,46(6):1045-1052

为探讨胆汁酸对齐口裂腹鱼幼鱼生长、脂肪沉积、脂肪代谢及相关基因表达的影响;实验以360尾初始体质量为(12.74±0.14) g的健康齐口裂腹鱼幼鱼为对象,随机分为4组,每组设3个重复组,每个重复组放养30尾,分别投喂胆汁酸含量为0、75、150和300mg/kg的4种饲料,养殖时间为70 d。结果显示,随着胆汁酸含量的升高,齐口裂腹鱼的增重率(WGR)呈先升高后降低的变化趋势,且在胆汁酸含量为150 mg/kg时达到最大,为226.63%;其肠脂肪酶(LPS)、肝酯酶(HL)、脂蛋白脂酶(LPL)和总脂酶(TL)活性均呈先升高后趋于稳定的变化趋势;而脂肪酸合成酶(FAS)活性则呈相反的变化趋势;齐口裂腹鱼肝脏LPL mRNA表达量呈先上调后趋于稳定的变化趋势,FAS mRNA表达量呈先下调后趋于稳定的变化趋势;肝脏、肌肉及全鱼中粗脂肪含量均随胆汁酸含量的升高呈先降低后趋于稳定的变化趋势,胆汁酸含量对实验鱼的成活率及脂肪沉积效率无显著性影响。研究表明,本实验条件下,添加适量的胆汁酸可有效上调齐口裂腹鱼LPL mRNA的表达量,下调FAS mRNA的表达量,增强脂肪代谢酶活性,促进对饲料...  相似文献   

高脂饲料中胆汁酸水平对齐口裂腹鱼肠道组织结构及脂肪代谢酶活性的影响   总被引：1，自引：0，他引：1  

曾本和  向枭  周兴华  任胜杰  陈建  吕光俊  朱成科  李代金 《水产学报》2016,40(9):1340-1348

为探索高脂饲料中添加胆汁酸对齐口裂腹鱼幼鱼肠道组织结构及几种脂肪代谢酶活性的影响,以360尾初始体质量为(12.74±0.14)g的健康齐口裂腹鱼幼鱼为实验对象,随机分为4组,每组3个重复,每个重复30尾实验鱼,分别投喂添加了0、75、150和300mg/kg胆汁酸的4种实验饲料,养殖时间为70 d。结果显示,胆汁酸浓度从0增大到75 mg/kg时,齐口裂腹鱼前肠和中肠管壁厚度及肠绒毛高度显著升高,前肠皱襞宽度显著降低。而当胆汁酸浓度再进一步增大时,实验鱼前肠和中肠管壁厚度及肠绒毛高度则升高不明显,其皱襞宽度也降低不显著。未添加胆汁酸的实验组中齐口裂腹鱼前肠和中肠纹状缘畸形或脱落现象严重,随着胆汁酸添加量的增加,逐渐减少至消失。齐口裂腹鱼肠道中脂肪酶(LPS)及肝胰脏中脂蛋白酯酶(LPL)、肝酯酶(HL)和总酯酶(TL)活性均随胆汁酸添加量的增加而呈先升高后趋于稳定的变化趋势。且LPS、LPL活性均在胆汁酸添加量为300 mg/kg时最强(分别为2881.17 U/g和14.43 U/mg prot);HL、TL活性则在胆汁酸添加量为150 mg/kg时活性最强(分别为43.70和58.03 U/mg prot)。但LPS、LPL、HL和TL活性在150与300mg/kg组均无显著差异。研究表明,在饲料中添加75~150 mg/kg的外源胆汁酸能提高齐口裂腹鱼幼鱼脂肪代谢酶的活性,促进对饲料脂肪的代谢和利用,还能改善齐口裂腹鱼幼鱼肠道结构,保护肠道健康。  相似文献   

CD44 expression in the bile duct epithelium is related to hepatic fibrosis in nonalcoholic steatohepatitis rats induced by a choline-deficient,methionine-lowered, L-amino acid diet     

Kinuko Uno  Katsuhiro Miyajima  Marika Toma  Noriko Suzuki-Kemuriyama  Dai Nakae 《Journal of toxicologic pathology》2022,35(2):149

Nonalcoholic steatohepatitis is a lifestyle-related disease and an increasing threat worldwide. Hepatic fibrosis, which results from chronic hepatic diseases including nonalcoholic steatohepatitis, is closely correlated with mortality among hepatic lesions, such as steatosis and inflammation. Thus, it is important to identify factors that can serve as diagnostic and therapeutic targets for hepatic fibrosis. In this study, we examined the function of CD44 in the development of hepatic fibrosis in choline-deficient, methionine-lowered, L-amino-acid diet-fed rats, especially with respect to the proliferation of bile duct epithelium. Male Fischer 344 rats were fed a choline-deficient, methionine-lowered, L-amino-acid diet for 2, 4, 13, or 26 weeks. This diet decreased the body weight; increased the levels of serum parameters indicating liver injury, such as aspartate and alanine aminotransferase; upregulated inflammation- and fibrosis-related gene expression in the liver; and resulted in the development of hepatic lesions, including fatty changes in hepatocytes, inflammatory cell infiltration, and fibrosis. Hepatic hyaluronan was synthesized and deposited in the liver tissue. The expression of both CD44 mRNA and protein was significantly increased throughout the experimental period. CD44 protein was observed in some of the bile duct epithelium, around which hyaluronic acid was deposited, and these bile duct lesions were concordant with the area of hepatic fibrosis. Thus, CD44 expressed in the bile duct epithelium may be a target for controlling nonalcoholic steatohepatitis-related hepatic fibrosis.  相似文献   

狐胆汁对蟾蜍离体心脏功能的影响     

薛艺  肖向红  张晶钰  刘志平  刘晶晶 《野生动物》2011,32(4):217-220

目的：研究狐胆汁对蟾蜍离体心脏的作用及对蟾蜍离体心脏细胞膜ATP酶活性的影响。方法：采用离体蛙心灌流法观察狐胆汁对离体蟾蜍心脏的收缩力、心率的影响,并通过定磷法检测狐胆汁对离体蟾蜍心肌细胞膜ATP酶活性的影响。结果：狐胆汁使蟾蜍离体心脏的收缩力加强,在0.3～4.0g/L浓度范围内,狐胆汁促进心肌收缩力的作用与剂量之间呈量效关系,最大效应可使心肌收缩力提高390%,心率减慢。随狐胆汁浓度提高,心肌细胞膜Ca^2＋-ATP酶活性提高,Na^＋K^＋-ATP酶、Mg^2＋-ATP酶、Ca^2＋Mg^2＋-ATP酶活性下降。结论：狐胆汁能提高蟾蜍离体心脏的功能,其作用机制有待进一步研究。  相似文献   

牛黄牛胆汁理化检验与细菌分离鉴定     

马新武  张淼涛 《动物医学进展》2000,(Z1)

牛黄即牛的胆结石 ,是名贵中药材之一 ,有牛黄的牛平时较难见到。本文通过对 1例牛黄牛和 3例非牛黄牛胆汁的理化检验和细菌分离鉴定 ,分析了牛胆汁的物理化学改变和细菌感染与牛黄形成的关系 ,初步表明胆汁中糖蛋白、间接胆红素、胆固醇和钙离子含量的增加 ,磷脂含量的降低 ,以及胆汁的大肠杆菌和乳酸杆菌感染等 ,对促进牛黄生成有重要作用。  相似文献   

活熊取胆最佳手术程序的建立及对机体某些指标的影响     

张中文  李京城  钱峰  王玉森 《中国兽医学报》1993,(1)

本试验通过38只黑熊的取胆手术,对活熊取胆手术的几个关键性问题——麻醉剂量和方法、最佳的手术通路以及引流器的使用等进行了比较众究,确立了比较合理的手术程序,并观察了术后取胆3个月时对机体的影响.实验结果表明:846合剂与盐酸氯胺酮对黑熊混合麻醉的效果较好,其最佳剂量为816合剂0.06±0.010mL/kg、盐酸氯胺酮1.390±0.398mg/kg,取胆手术的最佳通路为腹下壁,胸骨突至切口前角的距离是4～7cm(100kg以下的熊4～6cm,100kg以上的熊6～7cm),偏腹白线右侧1～2cm,平行于白线向后切开8～12cm;分别缝两针将胆囊固定在切口两侧的腹膜边缘上效果最佳;取胆所用的引流器以头部开花常流式内固定者为好;活熊取胆汁3个月时,对其血清谷草转氨酶、谷丙转氨酶,血液红细胞数、血红蛋白含量、红细胞压积容量等无显著影响,但血清总蛋白、白蛋白、胆固醇、胆红素的含量减少,球蛋白含量、血液中白细胞数增加.  相似文献   

Evaluation of an automated serum bile acids assay and the effect of bilirubin,hemoglobin, and lipid on the apparent bile acids yield     

Solter PF  Hoffmann WE  Hoffman JW 《Veterinary clinical pathology / American Society for Veterinary Clinical Pathology》1992,21(4):114-118

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