PMID- 25442285 OWN - NLM STAT- MEDLINE DCOM- 20150330 LR - 20171116 IS - 1618-095X (Electronic) IS - 0944-7113 (Linking) VI - 21 IP - 12 DP - 2014 Oct 15 TI - Baicalein protects against hypertension associated with diabetes: effect on vascular reactivity and stiffness. PG - 1742-5 LID - S0944-7113(14)00327-4 [pii] LID - 10.1016/j.phymed.2014.08.012 [doi] AB - The present work investigated the possible protective effect of baicalein, a natural lipoxygenase enzyme inhibitor, on both insulin deficiency (ID) and insulin resistance (IR)-induced macro-vascular impairment. ID and IR were induced by STZ or fructose for 8 or 12 weeks respectively while baicalein was administered in the last six weeks. Blood pressure (BP) was recorded and isolated aorta reactivity to phenylephrine (PE) and acetylcholine (ACh) were studied. Blood levels of glucose, insulin, advanced glycation end products (AGEs) and tumour necrosis factor-alpha (TNF-alpha) were determined. Aortic nuclear transcription factor-kappaB (NF-kappaB) activation was assessed. Both models resulted in elevated BP, increased vasoconstriction and impaired relaxation KCl, elevated TNF-alpha and AGEs, NF-kappaB activation, marked infiltration of leukocytes in the adventitia, pyknosis of endothelial cells and marked collagen deposition. Baicalein ameliorated elevations in BP in models, prevented exaggerated vasoconstriction IR model and improved relaxation in ID model. Baicalein reduced AGEs and TNF-alpha level, decreased NF-kappaB activation and inhibited histopathological changes in both models. Baicalein offsets the hypertensive and the vascular impairment associated with both diabetic models via ameliorating functional and structural derangements of blood vessels. CI - Copyright (c) 2014 Elsevier GmbH. All rights reserved. FAU - El-Bassossy, Hany M AU - El-Bassossy HM AD - Department of Pharmacology and Toxicology, Faculty of Pharmacy, King Abdulaziz University, Jeddah, Saudi Arabia; Department of Pharmacology and Toxicology, Faculty of Pharmacy, Zagazig University, Zagazig, Egypt. Electronic address: helbassossy@kau.edu.sa. FAU - Hassan, Noura Ahmed AU - Hassan NA AD - Department of Pharmacology and Toxicology, Faculty of Pharmacy, Zagazig University, Zagazig, Egypt. FAU - Mahmoud, Mona Fouad AU - Mahmoud MF AD - Department of Pharmacology and Toxicology, Faculty of Pharmacy, Zagazig University, Zagazig, Egypt. FAU - Fahmy, Ahmed AU - Fahmy A AD - Department of Pharmacology and Toxicology, Faculty of Pharmacy, Zagazig University, Zagazig, Egypt. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140919 PL - Germany TA - Phytomedicine JT - Phytomedicine : international journal of phytotherapy and phytopharmacology JID - 9438794 RN - 0 (Flavanones) RN - 0 (Glycation End Products, Advanced) RN - 0 (NF-kappa B) RN - 0 (Tumor Necrosis Factor-alpha) RN - 49QAH60606 (baicalein) SB - IM MH - Animals MH - Blood Pressure/drug effects MH - Diabetes Mellitus, Experimental/*complications/physiopathology MH - Flavanones/*pharmacology MH - Glycation End Products, Advanced/metabolism MH - Hypertension/complications/*drug therapy/physiopathology MH - Insulin Resistance MH - Male MH - NF-kappa B/metabolism MH - Rats, Wistar MH - Tumor Necrosis Factor-alpha/metabolism MH - Vasoconstriction/drug effects OTO - NOTNLM OT - Baicalein OT - Complication OT - Diabetes OT - Rat EDAT- 2014/12/03 06:00 MHDA- 2015/03/31 06:00 CRDT- 2014/12/03 06:00 PHST- 2014/05/18 00:00 [received] PHST- 2014/07/25 00:00 [revised] PHST- 2014/08/24 00:00 [accepted] PHST- 2014/12/03 06:00 [entrez] PHST- 2014/12/03 06:00 [pubmed] PHST- 2015/03/31 06:00 [medline] AID - S0944-7113(14)00327-4 [pii] AID - 10.1016/j.phymed.2014.08.012 [doi] PST - ppublish SO - Phytomedicine. 2014 Oct 15;21(12):1742-5. doi: 10.1016/j.phymed.2014.08.012. Epub 2014 Sep 19.