1型糖尿病小鼠的右室功能障碍:一项纵向研究
Jian-Jian Yu1,2, Jian-Ge Han2,3, Yi Tan1,4
1Pediatric Research Institute, Department of Pediatrics, University of Louisville School of Medicine, Louisville, KY 40202, United States.
World journal of diabetes
|October 20, 2025
概括
在1型糖尿病 (T1D) 的小鼠中,左心室功能障碍发生在右心室功能障碍之前. 肺动脉高血压晚些时候发展,可能会影响右心室功能.
科学领域:
- 心脏病学 心脏病学
- 内分泌学 在内分泌学.
- 糖尿病学 糖尿病学
背景情况:
- 糖尿病是一种全球代谢疾病,心血管并发症是导致死亡的主要原因.
- 糖尿病心肌病是一种特定于糖尿病的疾病,会影响心脏功能,特别是在1型糖尿病 (T1D) 中.
- 虽然T1D的左心室 (LV) 功能障碍得到了很好的研究,但右心室 (RV) 功能障碍正在获得研究关注,特别是在儿科T1D中.
研究的目的:
- 纵向评估30周内雌性转基因OVE26 T1D小鼠的RV和LV功能和结构变化.
- 为了比较T1D小鼠和野生类型对照之间的心脏功能.
主要方法:
- 通过胸腔回声心脏成像来评估RV和LV的结构和功能.
- 使用压力导管测量RV静心压力.
- 组织学分析 (西里乌斯红色,小麦胚芽聚合素) 和分子技术 (qPCR,西方斑点) 评估了纤维化,心肌细胞大小,miRNA表达和蛋白质水平.
主要成果:
- 在T1D小鼠中,LVstolic功能在30周后下降,而RVstolic功能与对照组相似.
- 从18周开始,RV静脉扩张功能障碍显著增加,伴随着RV纤维化和高.
- 肺动脉高血压在T1D小鼠中在30周后发展,由RV缩压升高和肺血流动力学变化表明.
结论:
- 在OVE26 T1D小鼠中,RV透气功能障碍比LV功能障碍晚出现.
- 晚期T1D与轻度的肺动脉高血压有关,这可能会导致RV缩损伤和重塑.
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