AIM: To assess the effects of soy protein, isoflavone, and saponin on liver and blood lipid in rats that consumed high-cholesterol diets.METHODS: High-cholesterol diets (1%) with or without soy material were fed to 6-...AIM: To assess the effects of soy protein, isoflavone, and saponin on liver and blood lipid in rats that consumed high-cholesterol diets.METHODS: High-cholesterol diets (1%) with or without soy material were fed to 6-wk-old male Sprague-Dawley rats for 8 wk. Blood lipids, liver lipids, glutamic oxaloacetic transaminase (GOT), and glutamic pyruvic transaminase (GPT) levels were measured. The in vitro bile acid-binding ability of soy materials was analyzed.RESULTS: The results of in vitro studies showed that soy protein isolate had a significantly higher bile acid-binding ability (8.4±0.8%) than soy saponin (3.1±0.7%) and isoflavone (1.3±0.4%, P＜0.05). On the other hand, at the end of the experimental period, rats that consumed soy protein diets had lower GOT and GPT levels than rats that consumed casein under high-cholesterol diets.Rats that consumed soy protein also had lower total cholesterol (TC) levels in the liver than those that consumed casein under high-cholesterol diets. Rats that consumed the soy protein diet containing both saponin and isoflavone had lower hepatic TC level than those that consumed the soy protein diet without isoflavone alone.The effect of different types of proteins on triglyceride was not significant.CONCLUSION: Consumption of soy provided benefits to control lipid levels under high-cholesterol dieting conditions in this rat model of hypercholesterolemia. The major component that reduced hepatic TC was not saponin, but possibly isoflavone.展开更多
植物固醇血症(OMIM:210250)是罕见的遗传代谢病,于1974年首次被报道,其主要临床特征为血清植物固醇水平增加,总胆固醇水平轻到中度增高[1-2]、多发皮肤肌腱黄色瘤及早发动脉粥样硬化等心血管疾病,严重者于5岁左右死于心肌梗死[3]。由于...植物固醇血症(OMIM:210250)是罕见的遗传代谢病,于1974年首次被报道,其主要临床特征为血清植物固醇水平增加,总胆固醇水平轻到中度增高[1-2]、多发皮肤肌腱黄色瘤及早发动脉粥样硬化等心血管疾病,严重者于5岁左右死于心肌梗死[3]。由于临床表型酷似纯合型家族性高胆固醇血症,也称为假性纯合型家族性高胆固醇血症,极易误诊漏诊误治[4]。目前认为植物固醇血症发病率为1/600万,全球报道病例仅约百例[5]。植物固醇血症的主要致病基因不同于家族性高胆固醇血症,为三磷酸腺苷结合盒转运体G5或G8(ATP binding cassette subfamily G member 5或8分别由ABCG5、ABCG8基因编码)缺陷[1]。展开更多
文摘AIM: To assess the effects of soy protein, isoflavone, and saponin on liver and blood lipid in rats that consumed high-cholesterol diets.METHODS: High-cholesterol diets (1%) with or without soy material were fed to 6-wk-old male Sprague-Dawley rats for 8 wk. Blood lipids, liver lipids, glutamic oxaloacetic transaminase (GOT), and glutamic pyruvic transaminase (GPT) levels were measured. The in vitro bile acid-binding ability of soy materials was analyzed.RESULTS: The results of in vitro studies showed that soy protein isolate had a significantly higher bile acid-binding ability (8.4±0.8%) than soy saponin (3.1±0.7%) and isoflavone (1.3±0.4%, P＜0.05). On the other hand, at the end of the experimental period, rats that consumed soy protein diets had lower GOT and GPT levels than rats that consumed casein under high-cholesterol diets.Rats that consumed soy protein also had lower total cholesterol (TC) levels in the liver than those that consumed casein under high-cholesterol diets. Rats that consumed the soy protein diet containing both saponin and isoflavone had lower hepatic TC level than those that consumed the soy protein diet without isoflavone alone.The effect of different types of proteins on triglyceride was not significant.CONCLUSION: Consumption of soy provided benefits to control lipid levels under high-cholesterol dieting conditions in this rat model of hypercholesterolemia. The major component that reduced hepatic TC was not saponin, but possibly isoflavone.
文摘植物固醇血症(OMIM:210250)是罕见的遗传代谢病,于1974年首次被报道,其主要临床特征为血清植物固醇水平增加,总胆固醇水平轻到中度增高[1-2]、多发皮肤肌腱黄色瘤及早发动脉粥样硬化等心血管疾病,严重者于5岁左右死于心肌梗死[3]。由于临床表型酷似纯合型家族性高胆固醇血症,也称为假性纯合型家族性高胆固醇血症,极易误诊漏诊误治[4]。目前认为植物固醇血症发病率为1/600万,全球报道病例仅约百例[5]。植物固醇血症的主要致病基因不同于家族性高胆固醇血症,为三磷酸腺苷结合盒转运体G5或G8(ATP binding cassette subfamily G member 5或8分别由ABCG5、ABCG8基因编码)缺陷[1]。
