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山东大学学报(医学版) ›› 2013, Vol. 51 ›› Issue (11): 74-77.

• 临床医学 • 上一篇    下一篇

氢质子磁共振波谱技术对2型糖尿病合并急性脑梗死患者脑内代谢物变化的评估

张敏1，耿厚法2，孙琳2   

  1. 1.山东大学医学院, 济南 250012； 2.济宁医学院附属医院内分泌一科, 山东 济宁 272029
  • 收稿日期:2013-01-07 出版日期:2013-11-10 发布日期:2013-11-10
  • 通讯作者: 孙琳， E-mail:sunlinsddx@sina.com
  • 基金资助:

    济宁市科技局资助［济科字(201157)号］

Quantitative evaluation of brain metabolic changes in patients with acute cerebral infarction and type 2 diabetes mellitus using proton magnetic resonance spectroscopy

ZHANG Min1, GENG Hou-fa2, SUN Lin2   

  1. 1. School of Medicine, Shandong University, Jinan 250012, China;
    2. The First Department of Endocrinology, Affiliated Hospital to Jining Medical College, Jining 272029, Shandong, China
  • Received:2013-01-07 Online:2013-11-10 Published:2013-11-10

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摘要：

目的  应用氢质子磁共振波谱(1H-MRS)技术检测2型糖尿病合并急性脑梗死梗塞侧及对应健侧代谢特点。方法  应用1.5T MRI 扫描仪对2型糖尿病合并急性脑梗死患者24例(DMCI组)、单纯急性脑梗死患者23例(CI组)与健康志愿者26例(HC组)均进行1H-MRS检测，测量大脑白质梗死侧及对应健侧的N-乙酰天门冬氨酸(NAA)/肌酸(Cr)、胆碱化合物(Cho)/肌酸(Cr)、乳酸(Lac)/肌酸(Cr)比值。结果  DMCI组和CI组梗死灶的NAA/Cr比值较HC组降低，DMCI组梗死侧NAA/Cr比值较CI组降低，DMCI组梗死侧的NAA/Cr比值较对应健侧降低，并且该组健侧与HC组相比，NAA/Cr比值降低。NAA/Cr水平与空腹血糖(FBG)和糖化血红蛋白(HbA1c)水平呈负相关。Cho/Cr比值在3组之间无明显差异，DMCI组和CI组梗死区域可检测到Lac峰，且DMCI组Lac/Cr比值较CI组升高。结论  2型糖尿病的存在可加重急性脑梗死患者神经元的损伤。2型糖尿病患者脑组织在未出现梗塞灶之前可能已存在神经元受损。

关键词: 2型糖尿病；急性脑梗死；氢质子磁共振波谱；N-乙酰天门冬氨酸；乳酸

Abstract:

Objective  To investigate the possible cerebral metabolic changes in the infarcted side and contralateral side in patients with type 2 diabetes mellitus and acute cerebral infarction using proton magnetic resonance spectroscopy (1H-MRS). Methods  24 patients with type 2 diabetes mellitus and acute cerebral infarction (DMCI group), 23 patients with acute cerebral infarction (CI group) and 26 healthy controls (HC group) were scanned with a 1.5-T MRI/MRS imager. The levels of N-acetylaspartate (NAA), Choline (Cho) and lactate (Lac) were detected and the ratios of NAA/Cr, Cho/Cr and Lac/Cr were calculated. Results  Cerebral NAA/Cr ratio in the infarcted side of CI group and DMCI group was lower than that in the HC group. There was a significant decrease in NAA/Cr ratio in the infarcted side of the DMCI group as compared to CI group. Cerebral NAA/Cr ratio in the infarcted side was lower than that in the contralateral side of the DMCI group, and NAA/Cr ratio in the contralateral side of the DMCI group tended to be lower than that in the HC group. Lac/Cr ratio in the DMCI group and CI group increased in the infarcted side compared to that in the HC group, and the Lac/Cr rataio in the infarcted side of DMCI group was higher than that in the CI group. HbA1c and FBG levels were negatively correlated with NAA/Cr ratio in the DMCI group. Conclusion  Type 2 diabetes may be associated with serious neuron damage in cerebral infarction, and it may cause cerebral damage in the white matter before the occurrence of infarction. 1H-MRS is useful in exploring the pathophysiologic mechanism of diabetes mellitus complicated with acute cerebral infarction.

Key words: Type 2 diabetes mellitus;  Acute cerebral infarction; Magnetic resonance spectroscopy; N-acetylaspartate; Lactate

中图分类号: 

  • R587.1
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