PMID- 36830898 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230228 IS - 2227-9059 (Print) IS - 2227-9059 (Electronic) IS - 2227-9059 (Linking) VI - 11 IP - 2 DP - 2023 Jan 26 TI - Lower Extremity Arterial Disease in Type 2 Diabetes Mellitus: Metformin Inhibits Femoral Artery Ultrastructural Alterations as well as Vascular Tissue Levels of AGEs/ET-1 Axis-Mediated Inflammation and Modulation of Vascular iNOS and eNOS Expression. LID - 10.3390/biomedicines11020361 [doi] LID - 361 AB - Lower extremity arterial disease (LEAD) is a major risk factor for amputation in diabetic patients. The advanced glycation end products (AGEs)/endothelin-1 (ET-1)/nitric oxide synthase (NOS) axis-mediated femoral artery injury with and without metformin has not been previously investigated. Type 2 diabetes mellitus (T2DM) was established in rats, with another group of rats treated for two weeks with 200 mg/kg metformin, before being induced with T2DM. The latter cohort were continued on metformin until they were sacrificed at week 12. Femoral artery injury was established in the diabetic group as demonstrated by substantial alterations to the femoral artery ultrastructure, which importantly were ameliorated by metformin. In addition, diabetes caused a significant (p < 0.0001) upregulation of vascular tissue levels of AGEs, ET-1, and iNOS, as well as high blood levels of glycated haemoglobin, TNF-alpha, and dyslipidemia. All of these parameters were also significantly inhibited by metformin. Moreover, metformin treatment augmented arterial eNOS expression which had been inhibited by diabetes progression. Furthermore, a significant correlation was observed between femoral artery endothelial tissue damage and glycemia, AGEs, ET-1, TNF-alpha, and dyslipidemia. Thus, in a rat model of T2DM-induced LEAD, an association between femoral artery tissue damage and the AGEs/ET-1/inflammation/NOS/dyslipidemia axis was demonstrated, with metformin treatment demonstrating beneficial vascular protective effects. FAU - Shati, Ayed A AU - Shati AA AUID- ORCID: 0000-0003-0444-5595 AD - Department of Child Health, College of Medicine, King Khalid University, Abha 61421, Saudi Arabia. FAU - Maarouf, Amro AU - Maarouf A AD - Department of Clinical Biochemistry, Birmingham Heartlands Hospital, University Hospitals Birmingham NHS Foundation Trust, Birmingham B9 5SS, UK. FAU - Dawood, Amal F AU - Dawood AF AUID- ORCID: 0000-0001-7646-0909 AD - Department of Basic Medical Sciences, College of Medicine, Princess Nourah Bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia. FAU - Bayoumy, Nervana M AU - Bayoumy NM AD - Department of Physiology, College of Medicine, King Saud University, Riyadh 11461, Saudi Arabia. FAU - Alqahtani, Youssef A AU - Alqahtani YA AD - Department of Child Health, College of Medicine, King Khalid University, Abha 61421, Saudi Arabia. FAU - A Eid, Refaat AU - A Eid R AUID- ORCID: 0000-0001-5633-9562 AD - Department of Pathology, College of Medicine, King Khalid University, Abha 61421, Saudi Arabia. FAU - Alqahtani, Saeed M AU - Alqahtani SM AD - Department of Surgery, College of Medicine, King Khalid University, Abha 61421, Saudi Arabia. FAU - Abd Ellatif, Mohamed AU - Abd Ellatif M AD - Department of Clinical Biochemistry, College of Medicine, King Khalid University, Abha 61421, Saudi Arabia. AD - Department of Medical Biochemistry, College of Medicine, Mansoura University, Mansoura 35516, Egypt. FAU - Al-Ani, Bahjat AU - Al-Ani B AD - Department of Physiology, College of Medicine, King Khalid University, Abha 61421, Saudi Arabia. FAU - Albawardi, Alia AU - Albawardi A AUID- ORCID: 0000-0002-0815-3891 AD - Department of Pathology, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain 15551, United Arab Emirates. LA - eng GR - Researchers Supporting Project number (PNURSP2023R110)/Princess Nourah bint Abdulrahman University/ PT - Journal Article DEP - 20230126 PL - Switzerland TA - Biomedicines JT - Biomedicines JID - 101691304 PMC - PMC9953164 OTO - NOTNLM OT - AGEs OT - ET-1 OT - NOS OT - diabetes OT - dyslipidemia OT - femoral artery OT - inflammation OT - metformin COIS- The authors declare no conflict of interest. EDAT- 2023/02/26 06:00 MHDA- 2023/02/26 06:01 PMCR- 2023/01/26 CRDT- 2023/02/25 01:27 PHST- 2022/12/27 00:00 [received] PHST- 2023/01/24 00:00 [revised] PHST- 2023/01/25 00:00 [accepted] PHST- 2023/02/25 01:27 [entrez] PHST- 2023/02/26 06:00 [pubmed] PHST- 2023/02/26 06:01 [medline] PHST- 2023/01/26 00:00 [pmc-release] AID - biomedicines11020361 [pii] AID - biomedicines-11-00361 [pii] AID - 10.3390/biomedicines11020361 [doi] PST - epublish SO - Biomedicines. 2023 Jan 26;11(2):361. doi: 10.3390/biomedicines11020361.