中国组织工程研究

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牛磺酸联合脐带间充质干细胞移植修复酒精性肝损伤

李海涛1,陈  超2   

  1. 河北省遵化市人民医院,1外一科,2病理科,河北省遵化市  064200
  • 出版日期:2017-01-08 发布日期:2017-03-15
  • 作者简介:李海涛,男,1978年生,河北省遵化市人,汉族,2005年河北医科大学毕业,主治医师,主要从事普通外科、肝胆外科研究。

Taurine combined with umbilical cord blood mesenchymal stem cell transplantation for liver injury repair

Li Hai-tao1, Chen Chao2   

  1. 1Department of Surgery, 2Department of Pathology, Zunhua People’s Hospital, Zunhua 064200, Hebei Province, China
  • Online:2017-01-08 Published:2017-03-15
  • About author:Li Hai-tao, Attending physician, Department of Surgery, Zunhua People's Hospital, Zunhua 064200, Hebei Province, China

摘要:

文章快速阅读:

 

文题释义:
牛磺酸:
又称β-氨基乙磺酸,最早从牛黄中分离出来,纯品为无色或白色斜状晶体,无臭,牛磺酸化学性质稳定,不溶于乙醚等有机溶剂,是一种含硫的非蛋白氨基酸,在体内以游离状态存在,不参与体内蛋白的生物合成。牛磺酸虽然不参与蛋白质合成,但它却与胱氨酸、半胱氨酸的代谢密切相关。人体合成牛磺酸的半胱氨酸亚硫酸羧酶活性较低,主要依靠摄取食物中的牛磺酸来满足机体需要。
细胞色素氧化酶P450(cytochrome P450, CYP450)超家族:是重要的生物转化酶系,根据1993年Nelson等科学家制定的,根据P450分子的氨基酸序列的统一命名法,CYP450可以被进一步分为几个族。涉及大多数药物代谢的CYP450酶系主要有CYP1,CYP2,CYP3 3个族,CYP1A2酶亚家族主要在肝脏表达,占体内CYP450酶总量的13%,仅次于CYP3A酶和CYP2C酶,居第3位。代谢临床5%-10%的常规应用药物,故CYP1A2酶的活性与许多药物的疗效或毒性相关,其还参与多种与癌症发生密切相关的化学性毒物(如亚硝胺)和内源性激素的代谢,具有重要的药理学和毒理学意义。CYP1A2酶基因多态性和表型差异的研究,可用于评价临床药物治疗效果。

 

摘要
背景:
研究表明,脐带间充质干细胞可以诱导分化成肝样细胞,从而对肝损伤有一定的修复作用。
目的:探讨牛磺酸与人脐带间充质干细胞移植联合治疗对肝损伤的修复作用。
方法:48只健康SD大鼠给予56度白酒灌胃30 d建立慢性酒精性肝损伤模型,建模后将其随机分为模型组,脐带间充质干细胞组及牛磺酸+脐带间充质干细胞组。模型组门静脉注射生理盐水1 mL,脐带间充质干细胞组门静脉移植1 mL脐带间充质干细胞悬液,牛磺酸+脐带间充质干细胞组门静脉注射牛磺酸0.28 g/L+1 mL脐带间充质干细胞悬液。移植后2周,检测各组大鼠血清超氧化物歧化酶、谷胱甘肽过氧化物酶、过氧化氢酶、丙氨酸氨基转移酶以及丙二醛、内毒素、白细胞介素4水平;采用RT-PCR方法检测肝细胞特征性功能蛋白CYP2B1的mRNA表达。
结果与结论:①与模型组相比较,脐带间充质干细胞组、牛磺酸+脐带间充质干细胞组超氧化物歧化酶、谷胱甘肽过氧化物酶、过氧化氢酶、谷丙转氨酶水平均显著增高(P < 0.05),丙二醛、内毒素、白细胞介素4水平均显著下降(P < 0.05)。与脐带间充质干细胞组比较,牛磺酸+脐带间充质干细胞组超氧化物歧化酶、谷胱甘肽过氧化物酶、过氧化氢酶、谷丙转氨酶水平进一步增高(P < 0.05),丙二醛、内毒素、白细胞介素4水平进一步下降(P < 0.05);②与模型组、脐带间充质干细胞组比较,肝细胞特征性功能蛋白CYP2B1的mRNA表达在牛磺酸+脐带间充质干细胞组显著增高,差异有显著性意义(P < 0.05);③以上实验结果表明,脐带间充质干细胞移植可以修复大鼠肝损伤,与牛磺酸联合使用后效果更佳,其可能与减少自由基对机体的损害有关。

 

中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程
ORCID:
0000-0002-9599-1323(李海涛)

关键词: 干细胞, 移植, 牛磺酸, 脐带间充质干细胞, 酒精性肝损伤, CYP2B1

Abstract:

BACKGROUND: Studies have shown that umbilical cord mesenchymal stem cells (UC-MSCs) can be induced to differentiate into liver cells, playing a role in liver repair.
OBJECTIVE: To explore the effect of taurine combined with UC-MSCs transplantation on liver injury repair.
METHODS: Forty healthy Sprague-Dawley rats were used to make chronic alcoholic liver injury models through intragastric administration of 56 degrees liquor, and then randomized into model group, UC-MSCs group and combined treatment group (taurine combined with UC-MSCs transplantation). Model rats were given portal vein injection of 1 mL normal saline in the model group, 1 mL UC-MSCs suspension in the UC-MSCs group, and 0.28 g/L taurine plus 1 mL UC-MSCs in the combined treatment group. Two weeks after transplantation, levels of serum superoxide dismutase, glutathione peroxidase, catalase, alanine aminotransferase, malondialdehyde, endotoxin and interleukin-4 were detected. RT-PCR was used to detect CYP2B1 mRNA expression.
RESULTS AND CONCLUSION: Levels of serum superoxide dismutase, glutathione peroxidase, catalase and alanine aminotransferase were highest in the combined treatment group, higher in the UC-MSCs group and lowest in the model group (P < 0.05). The levels of malondialdehyde, endotoxin and interleukin-4 were ranked as follows: combined treatment group < UC-MSCs group < model group (P < 0.05). RT-PCR findings showed that the CYP2B1 mRNA expression was increased significantly in the combined treatment group as compared with the UC-MSCs and model groups (P < 0.05). Taken together, our experimental findings suggest that UC-MSCs transplantation, especially in combination with taurine, can promote recovery from liver injury in rats, which is probably related to a reduction in free radicals that trigger a damage to the body.

 

中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程

Key words: Umbilical Cord, Mesenchymal Stem Cell Transplantation, Taurine, Liver Diseases, Alcoholic, Tissue Engineering

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