PMID- 36509234 OWN - NLM STAT- MEDLINE DCOM- 20230202 LR - 20240102 IS - 1872-9754 (Electronic) IS - 0197-0186 (Print) IS - 0197-0186 (Linking) VI - 162 DP - 2023 Jan TI - Cerebral microvascular matrix metalloproteinase-3 (MMP3) contributes to vascular injury after stroke in female diabetic rats. PG - 105462 LID - S0197-0186(22)00187-5 [pii] LID - 10.1016/j.neuint.2022.105462 [doi] AB - Diabetes exacerbates hemorrhagic transformation (HT) after stroke and worsens clinical outcomes. Female patients with diabetes are at a greater risk of stroke and worsened recovery. We have shown that activation of matrix metalloprotease 3 (MMP3) in hyperglycemic settings mediates HT in male rats. In light of our recent findings that diabetic female rats develop greater HT, the current study was designed to test the hypotheses that: 1) cerebral microvascular MMP3 activation contributes to poor functional outcomes and increased hemorrhagic transformations (HT) after ischemic stroke, and 2) MMP3 inhibition can improve functional outcomes in female diabetic rats. Female control and diabetic Wistar rats were subjected to 60 min of middle cerebral artery occlusion (MCAO). One cohort of diabetic animals received a single dose of MMP3 inhibitor (UK356618; 15 mg/kg; iv) or vehicle after reperfusion. Neurobehavioral outcomes, brain infarct size, edema, HT, and MMPs were measured in brain tissue. Diabetic rats had significant neurological deficits on Day 3 after stroke. MMP3 expression and enzyme activity were significantly increased in both micro and macro vessels of diabetic animals. MMP3 inhibition improved functional outcomes and reduced brain edema and HT scores. In conclusion, cerebral endothelial MMP3 activation to vascular injury in female diabetic rats. Our findings identify MMP3 as a potential therapeutic target in diabetic stroke. CI - Published by Elsevier Ltd. FAU - Abdul, Yasir AU - Abdul Y AD - Department of Pathology & Laboratory Medicine, Medical University of South Carolina, USA; Ralph H. Johnson Veterans Affairs Health Care System, Charleston, SC, USA. FAU - Jamil, Sarah AU - Jamil S AD - Department of Pathology & Laboratory Medicine, Medical University of South Carolina, USA; Ralph H. Johnson Veterans Affairs Health Care System, Charleston, SC, USA. FAU - Li, Weiguo AU - Li W AD - Department of Pathology & Laboratory Medicine, Medical University of South Carolina, USA; Ralph H. Johnson Veterans Affairs Health Care System, Charleston, SC, USA. FAU - Ergul, Adviye AU - Ergul A AD - Department of Pathology & Laboratory Medicine, Medical University of South Carolina, USA; Ralph H. Johnson Veterans Affairs Health Care System, Charleston, SC, USA. Electronic address: ergul@musc.edu. LA - eng GR - R01 NS104573/NS/NINDS NIH HHS/United States GR - IK6 BX004471/BX/BLRD VA/United States GR - I01 BX000347/BX/BLRD VA/United States GR - UL1 TR001450/TR/NCATS NIH HHS/United States GR - RF1 NS083559/NS/NINDS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20221209 PL - England TA - Neurochem Int JT - Neurochemistry international JID - 8006959 RN - EC 3.4.24.17 (Matrix Metalloproteinase 3) SB - IM MH - Animals MH - Female MH - Male MH - Rats MH - *Diabetes Mellitus, Experimental/complications MH - Disease Models, Animal MH - *Infarction, Middle Cerebral Artery/complications MH - *Matrix Metalloproteinase 3/metabolism MH - Rats, Wistar MH - *Stroke/complications MH - *Vascular System Injuries/enzymology/etiology MH - *Microvessels/enzymology MH - Cerebrum/blood supply PMC - PMC9839584 MID - NIHMS1857567 OTO - NOTNLM OT - Brain OT - Diabetes OT - Endothelial cells OT - MMP3 OT - Stroke COIS- Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2022/12/13 06:00 MHDA- 2023/01/11 06:00 PMCR- 2024/01/01 CRDT- 2022/12/12 19:25 PHST- 2022/10/12 00:00 [received] PHST- 2022/12/01 00:00 [revised] PHST- 2022/12/04 00:00 [accepted] PHST- 2022/12/13 06:00 [pubmed] PHST- 2023/01/11 06:00 [medline] PHST- 2022/12/12 19:25 [entrez] PHST- 2024/01/01 00:00 [pmc-release] AID - S0197-0186(22)00187-5 [pii] AID - 10.1016/j.neuint.2022.105462 [doi] PST - ppublish SO - Neurochem Int. 2023 Jan;162:105462. doi: 10.1016/j.neuint.2022.105462. Epub 2022 Dec 9.