Insulin protects against type 1 diabetes mellitus-induced aortopathy associated with the inhibition of biomarkers of vascular injury in rats

Ismaeel Bin-Jaliaha, Peter Hewett, Fahaid Al Hashem, Mohamed Haidara, Dina Abdel Kader, M. D. Morsy, Bahjat Al-Ani

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Abstract

Background: We sought to investigate the protective effect of insulin against type 1 diabetes mellitus (T1DM)-induced aortic injury (aortopathy) associated with the inhibition of biomarkers of vascular injury. Material and methods: T1DM was induced in rats by streptozotocin (STZ) (65 mg/kg), and the protection group started insulin treatment 2 days post diabetic induction and continued until being sacrificed at week 8. Results: Aortopathy was developed in the diabetic rats as demonstrated by profound alterations to the aorta ultrastructure, which was substantially protected by insulin. In addition, insulin significantly inhibited diabetes-induced dyslipidaemia, soluble vascular cell adhesion molecule-1 (sVCAM-1) and soluble intercellular adhesion molecule-1 (sICAM-1), oxidative stress, and inflammation. However, blood levels of these biomarkers in the insulin-treated group were still significant (p <.05) compared with the control group, whereas insulin treatment returned blood glucose and triglyceride to control levels. Conclusions: We demonstrate effective protection by insulin against T1DM-induced aortopathy in rats, which is associated with the inhibition of vascular injury biomarkers.

Original languageEnglish
JournalArchives of Physiology and Biochemistry
DOIs
Publication statusPublished - 28 Jun 2019

Keywords

  • Aortopathy
  • insulin
  • rat model
  • type 1 diabetes mellitus
  • vascular activation

ASJC Scopus subject areas

  • Physiology
  • Physiology (medical)

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