中国组织工程研究 ›› 2015, Vol. 19 ›› Issue (43): 6924-6929.doi: 10.3969/j.issn.2095-4344.2015.43.007

• 材料生物相容性 material biocompatibility • 上一篇    下一篇

镍钛合金丝对大鼠心肌细胞肌浆网钙泵及雷尼丁受体的影响

谷尚武1,姜黔峰2,陆远富3,商黔惠2,吴  芹2,巩  亮2,方明亮3   

  1. 1遵义县人民医院心内科,贵州省遵义市  563100;2遵义医学院附属医院心内科,贵州省遵义市  563000;3遵义医学院,贵州省遵义市  563000
  • 收稿日期:2015-07-25 出版日期:2015-10-15 发布日期:2015-10-15
  • 通讯作者: 姜黔峰,主任医师,研究生导师,遵义医学院附属医院心内科,贵州省遵义市 563000
  • 基金资助:

    贵州省科技厅社发攻关(黔科合SY字[2010]3073)

Effect of nickel-titanium wire on the expression of sarcoplasmic reticulum Ca~(2+)-ATPase and ryanodine receptor in rat myocardial cells

Gu Shang-wu1, Jiang Qian-feng2, Lu Yuan-fu3, Shang Qian-hui2, Wu Qin2, Gong Liang2, Fang Ming-liang3   

  1. 1Department of Cardiology, People’s Hospital of Zunyi County, Zunyi 563100, Guizhou Province, China; 2Department of Cardiology, Affiliated Hospital of Zunyi Medical College, Zunyi 563000, Guizhou Province, China; 3Zunyi Medical University, Zunyi 563000, Guizhou Province, China
  • Received:2015-07-25 Online:2015-10-15 Published:2015-10-15
  • Contact: Jiang Qian-feng, Chief physician, Master’s supervisor, Department of Cardiology, Affiliated Hospital of Zunyi Medical College, Zunyi 563000, Guizhou Province, China
  • Supported by:

    Social Development Project of Guizhou Provincial Science and Technology Department of China, No. [2010]3073

摘要:

背景:虽然镍钛合金封堵器置入治疗先天性心脏病具有较好的临床效果,但后期发生心律失常并发症的概率较大。

目的:观察镍钛合金对大鼠心肌细胞肌浆网钙泵及雷尼丁受体表达的影响。
方法:取30只SD大鼠,随机均分为2组,实验组于心尖部植入镍钛合金丝,对照组不做任何处理特殊处理,术后1,3,6个月取材,采用RT-PCR检测心肌细胞肌浆网钙泵与雷尼丁受体基因的表达,采用免疫组化检测心肌细胞肌浆网钙泵及雷尼丁受体蛋白的表达,采用苏木精-伊红染色检测炎症反应情况。
结果与结论:实验组镍钛合金植入大鼠心肌后,炎症细胞浸润,引发炎症反应,伴纤维组织增生,随着植入时间延长,炎症反应逐渐消失;对照组未见炎细胞浸润。两组术后不同时间点的心肌细胞肌浆网钙泵、雷尼丁受体基因表达比较差异无显著性意义,相应的蛋白表达比较差异也无显著性意义。表明镍钛合金丝不影响心肌细胞肌浆网钙泵、雷尼丁受体的表达,提示镍钛合金封堵器相关心律失常可能与肌浆网钙泵、雷尼丁受体蛋白表达异常机制关系不大。
中国组织工程研究杂志出版内容重点:生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程

关键词: 生物材料, 材料相容性, 镍钛合金, 先天性心脏病, 肌浆网, 雷尼丁受体, 肌浆网钙泵

Abstract:

BACKGROUND: Although the nickel-titanium occluder in the treatment of congenital heart disease has a better clinical effect, arrhythmia will be more likely to develop in late stage.

OBJECTIVE: To investigate the effect of nickel-titanium wire on expression of sarcoplasmic reticulum Ca~(2+)-ATPase and ryanodine receptor of rat myocardial cells.
METHODS: Thirty Sprague-Dawley rats were obtained and randomly divided into two groups: experimental and control groups. The nickel-titanium wire was implanted to the apex of heart of rats in the experimental group. Rats in the control group received no special treatment. Rat mycardial cells were harvested at the 1th, 3rd and 6th months after operation. The gene and protein expressions of sarcoplasmic reticulum Ca~(2+)-ATPase and ryanodine receptor of rat myocardial cells were detected using RT-PCR and immunohistochemistry, respectively. The inflammatory reactions were detected using hematoxylin-eosin staining.
RESULTS AND CONCLUSION: After the nickel-titanium wire was implanted into the rat myocardium, inflammatory reaction was induced by inflammatory cell infiltration in the experimental group, with hyperplasia of fibrous tissue. The inflammatory reaction gradually disappeared as the implanted time extended. No inflammatory cell infiltration was visible in the control group. There was no significant difference in the gene and protein expressions of sarcoplasmic reticulum Ca~(2+)-ATPase and ryanodine receptor of rat myocardial cells at different time points after operation between these two groups. It showed that nickel-titanium wire had no influence on the expressions of sarcoplasmic reticulum Ca~(2+)-ATPase and ryanodine receptor of rat myocardial cells. These results suggest that nickel-titanium occluder-related arrhythmia may have little relationship with abnormal protein expression of sarcoplasmic reticulum Ca~(2+)-ATPase and ryanodine receptor. 
 

Key words: Alloys, Septal Occluder Device, Sarcoplasmic Reticulum Calcium-Transporting ATPases, Tissue Engineering