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المؤلفMaamoun, Hatem
المؤلفBenameur, Tarek
المؤلفPintus, Gianfranco
المؤلفMunusamy, Shankar
المؤلفAgouni, Abdelali
تاريخ الإتاحة2019-05-23T07:13:39Z
تاريخ النشر2019
اسم المنشورFrontiers in Physiologyen_US
المعرّفhttp://dx.doi.org/10.3389/fphys.2019.00070
الاقتباسMaamoun H, Benameur T, Pintus G, Munusamy S and Agouni A (2019) Crosstalk Between Oxidative Stress and Endoplasmic Reticulum (ER) Stress in Endothelial Dysfunction and Aberrant Angiogenesis Associated With Diabetes: A Focus on the Protective Roles of Heme Oxygenase (HO)-1. Front. Physiol. 10:70. doi: 10.3389/fphys.2019.00070
معرّف المصادر الموحدhttp://hdl.handle.net/10576/11612
الملخصType-2 diabetes prevalence is continuing to rise worldwide due to physical inactivity and obesity epidemic. Diabetes and fluctuations of blood sugar are related to multiple micro- and macrovascular complications, that are attributed to oxidative stress, endoplasmic reticulum (ER) activation and inflammatory processes, which lead to endothelial dysfunction characterized, among other features, by reduced availability of nitric oxide (NO) and aberrant angiogenic capacity. Several enzymatic anti-oxidant and anti-inflammatory agents have been found to play protective roles against oxidative stress and its downstream signaling pathways. Of particular interest, heme oxygenase (HO) isoforms, specifically HO-1, have attracted much attention as major cytoprotective players in conditions associated with inflammation and oxidative stress. HO operates as a key rate-limiting enzyme in the process of degradation of the iron-containing molecule, heme, yielding the following byproducts: carbon monoxide (CO), iron, and biliverdin. Because HO-1 induction was linked to pro-oxidant states, it has been regarded as a marker of oxidative stress; however, accumulating evidence has established multiple cytoprotective roles of the enzyme in metabolic and cardiovascular disorders. The cytoprotective effects of HO-1 depend on several cellular mechanisms including the generation of bilirubin, an anti-oxidant molecule, from the degradation of heme; the induction of ferritin, a strong chelator of free iron; and the release of CO, that displays multiple anti-inflammatory and anti-apoptotic actions. The current review article describes the major molecular mechanisms contributing to endothelial dysfunction and altered angiogenesis in diabetes with a special focus on the interplay between oxidative stress and ER stress response. The review summarizes the key cytoprotective roles of HO-1 against hyperglycemia-induced endothelial dysfunction and aberrant angiogenesis and discusses the major underlying cellular mechanisms associated with its protective effects.
راعي المشروعNPRP award (NPRP8-1750-3-360) from the Qatar National Research Fund (a member of Qatar Foundation) and a Qatar University high collaborative grant (QUCG-CPH-2018\2019-2)
اللغةen
الناشرFrontiers Media
الموضوعER stress
الموضوعangiogenesis
الموضوعdiabetes
الموضوعendothelial dysfunction
الموضوعheme oxygenase-1 (Ho-1)
الموضوعhyperglycemia
الموضوعoxidative stress
العنوانCrosstalk Between Oxidative Stress and Endoplasmic Reticulum (ER) Stress in Endothelial Dysfunction and Aberrant Angiogenesis Associated With Diabetes: A Focus on the Protective Roles of Heme Oxygenase (HO)-1
النوعArticle Review
رقم المجلد10
ESSN1664-042X


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