中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (40): 6041-6047.doi: 10.3969/j.issn.2095-4344.2016.40.017

• 内分泌系统损伤与修复动物模型 Animal models of endocrine system injury and repair • 上一篇    下一篇

2型糖尿病大鼠骨质疏松模型的建立

张 燕1,杨秋萍2,赵 燕1,赵豫梅1,谭 洪1,杜思成1   

  1. 昆明医科大学第一附属医院,1糖尿病科,2干部病房科,云南省昆明市 650032
  • 修回日期:2016-07-14 出版日期:2016-09-30 发布日期:2016-09-30
  • 通讯作者: 杨秋萍,硕士,主任医师,教授,昆明医科大学第一附属医院干部病房科,云南省昆明市 650032
  • 作者简介:张燕,女,1989年生,云南省大理市人,汉族,昆明医科大学在读硕士,主要从事内分泌代谢临床工作。
  • 基金资助:

    云南省科技厅-昆明医科大学应用基础研究联合专项(2013FZ270);昆明医科大学研究生创新基金(2014N04)

Establishing a rat model of type 2 diabetes: its bone metabolism level

Zhang Yan1, Yang Qiu-ping2, Zhao Yan1, Zhao Yu-mei1, Tan Hong1, Du Si-cheng1   

  1. 1Department of Diabetes, 2Department of Cadre’s Ward, First Affiliated Hospital of Kunming Medical University, Kunming 650032, Yunnan Province, China
  • Revised:2016-07-14 Online:2016-09-30 Published:2016-09-30
  • Contact: Yang Qiu-ping, Master, Chief physician, Professor, Department of Cadre’s Ward, First Affiliated Hospital of Kunming Medical University, Kunming 650032, Yunnan Province, China
  • About author:Zhang Yan, Studying for master’s degree, Department of Diabetes, First Affiliated Hospital of Kunming Medical University, Kunming 650032, Yunnan Province, China
  • Supported by:

    the Joint Special for Applied Basic Research of Yunnan Provincial Science and Technology Department-Kunming Medical University, No. 2013FZ270; the Innovation Foundation for the Postgraduate in Kunming Medical University, No. 2014N04

摘要:

文章快速阅读: 

 
 
文题释义:
骨质疏松模型大鼠的建立:大鼠卵巢切除所造成的骨质疏松模型是一个优秀的模型,它正确的模拟了成年妇女激素缺乏的临床特性及对激素替代疗法的反应。未交配的6-10月龄的雌性大鼠是预防研究的最佳选择。而10-11月龄的雌性大鼠对研究峰值骨量以后的骨丢失有重要价值。如果实验的目的是研究成年人骨病进程的特点,10月龄的雌性大鼠被切除卵巢造成的骨丢失是首选的动物模型,此时它已达骨峰值,且同成人女性骨质疏松有极相似的临床表现。雄性去睾丸及维甲酸诱导的大鼠骨质疏松模型也是研究原发性骨质疏松的成熟造模方法。
胰岛素抵抗:即胰岛素的敏感性和反应性减低,指胰岛素作用的靶器官(主要是肝脏、肌肉和脂肪组织)对胰岛素作用的敏感性降低,单位胰岛素产生的生物学效应低于预期正常水平而于产生的一系列病理变化和临床表现。它是2型糖尿病发生和进展的驱动因素,并贯穿于2型糖尿病全过程。
 
摘要
背景:目前认为长期高血糖、降糖药物的使用、饮食控制、雌激素、胰岛素样生长因子、瘦素、体质量、性别、年龄等因素可能在糖尿病发生骨质疏松的病理生理过程中起着重要作用。
目的:建立2型糖尿病骨质疏松模型,探讨2型糖尿病对骨代谢的影响。
方法:雄性SD大鼠采用高脂高糖饮食联合小剂量链脲佐菌素(35 mg/kg)诱导2型糖尿病大鼠模型为糖尿病组;对照组予相同剂量的柠檬酸-柠檬酸钠缓冲液一次性左下腹腔注射作为正常对照组。成模4周后,糖尿病组7只,正常对照组13只进入结果分析。采用双能X射线检测大鼠骨密度,检测血清空腹血糖、胆固醇、三酰甘油、血钙、血磷、碱性磷酸酶、 空腹胰岛素、骨钙素、Ⅰ型胶原交联C末端肽,观察骨形态学变化。
结果与结论:与正常对照组比较,①糖尿病组大鼠体质量下降、空腹血糖明显升高(P < 0.05),并呈持续状态;②糖尿病组大鼠血胆固醇、三酰甘油、空腹胰岛素、碱性磷酸酶、胰岛素抵抗指数明显升高,而胰岛素敏感指数下降(P < 0.05);③糖尿病组血清磷、血钙、骨钙素、Ⅰ型胶原交联C末端肽,差异无显著性意义(P > 0.05);④苏木精-伊红染色显示糖尿病组大鼠骨小梁稀疏,数量减少,间隙增大,小梁变细,连续性破坏,常见游离断增多;⑤糖尿病组全身骨密度、腰椎+双股骨+盆骨骨密度,胸腰椎骨密度均明显下降(P < 0.05)。⑥结果说明,高糖高脂喂养5周基础上联合小剂量链脲佐菌素(35 mg/kg)可以诱导2型糖尿病大鼠模型。该模型具有高糖、高脂、胰岛素抵抗及骨密度下降,骨形态学检查呈骨吸收增加改变的特点。 

中国组织工程研究杂志出版内容重点:肾移植肝移植移植;心脏移植;组织移植;皮肤移植;皮瓣移植;血管移植;器官移植组织工程

ORCID:
0000-0002-6808-8614(张燕)

关键词: 实验动物, 内分泌系统损伤与修复动物模型, 2型糖尿病, 骨质疏松, 骨密度, 骨形态

Abstract:

BACKGROUND: Diabetes mellitus can give rise to bone metabolic disorders that may involve long-term hyperglycemia, hypoglycemic agents, diet control, estrogen, insulin-like growth factor, leptin, body mass, sex and age.

OBJECTIVE: To establish type 2 diabetic rat models, and to explore the influence of type 2 diabetes on bone metabolism.
METHODS: High-fat and high-glucose diets combining with 35 mg/kg streptozotocin were used to induce type 2 diabetic model in seven male Sprague-Dawley rats (diabetic group). Thirteen rats in control group were given intraperitoneal injection of the same amount of citric acid and sodium citrate buffer. At 4 weeks after modeling, the bone density of rats was serum detected by dual-energy X-ray, levels of fasting blood-glucose, cholesterol, triacylglycerol, serum calcium, phosphate, alkaline phosphatase, fasting insulin, osteocalcin and C-terminal telopeptide-I were measured, and morphology of bone was observed.
RESULTS AND CONCLUSION: Compared with control group, (1) the rat body mass and fasting blood-glucose kept on an overt rise in the diabetic group (P < 0.05); (2) levels of cholesterol, triacylglycerol, fasting insulin and alkaline phosphatase, as well as insulin resistance index were significantly increased, but insulin sensitivity index was significantly decreased in the diabetic group (P < 0.05). (3) There were no significant differences in the levels of serum calcium, phosphate, alkaline phosphatase, osteocalcin and C-terminal telopeptide-I between two groups (P > 0.05). (4) In the diabetic group, thinner and sparse bone trabeculae were split presenting more free broken ends; (5) the bone density in lumbar spine, double femoral, pelvic and thoracolumbar spine were all significantly decreased (P < 0.05). (6) In conclusion, the type 2 diabetic rat model can be successfully induced by 5-week feeding high-fat and high-glucose diets combining with intraperitoneal injection of 35 mg/kg streptozotocin; these mode rats hold some characters, such as hyperglycemia, dyslipidemia, insulin resistance, diminished bone density, and accelerated bone resorption.

 

Key words: Diabetes Mellitus, Type 2, Osteoporosis, Bone Density, Tissue Engineering

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