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Mechanistic Insight into Oxidative Stress-Triggered Signaling Pathways and Type 2 Diabetes

期刊

MOLECULES
卷 27, 期 3, 页码 -

出版社

MDPI
DOI: 10.3390/molecules27030950

关键词

oxidative stress (OS); ROS; diabetes mellitus (DM); antioxidants; insulin; mitochondria

资金

  1. University of Delhi [CD/2018, IOE/FRP/PCMS/2020/27]

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Oxidative stress is a metabolic dysfunction caused by the imbalance between reactive oxygen species production and the body's antioxidant defense system. It is closely related to the development of various noncommunicable diseases. Diabetes mellitus, especially type 2 diabetes, is significantly influenced by oxidative stress, which plays a crucial role in insulin signaling pathways.
Oxidative stress (OS) is a metabolic dysfunction mediated by the imbalance between the biochemical processes leading to elevated production of reactive oxygen species (ROS) and the antioxidant defense system of the body. It has a ubiquitous role in the development of numerous noncommunicable maladies including cardiovascular diseases, cancers, neurodegenerative diseases, aging and respiratory diseases. Diseases associated with metabolic dysfunction may be influenced by changes in the redox balance. Lately, there has been increasing awareness and evidence that diabetes mellitus (DM), particularly type 2 diabetes, is significantly modulated by oxidative stress. DM is a state of impaired metabolism characterized by hyperglycemia, resulting from defects in insulin secretion or action, or both. ROS such as hydrogen peroxide and the superoxide anion introduce chemical changes virtually in all cellular components, causing deleterious effects on the islets of beta-cells, in turn affecting insulin production. Under hyperglycemic conditions, various signaling pathways such as nuclear factor-kappa beta (NF-kappa beta) and protein kinase C (PKC) are also activated by ROS. All of these can be linked to a hindrance in insulin signaling pathways, leading to insulin resistance. Hyperglycemia-induced oxidative stress plays a substantial role in complications including diabetic nephropathy. DM patients are more prone to microvascular as well as atherosclerotic macrovascular diseases. This systemic disease affects most countries around the world, owing to population explosion, aging, urbanization, obesity, lifestyle, etc. However, some modulators, with their free radical scavenging properties, can play a prospective role in overcoming the debilitating effects of OS. This review is a modest approach to summarizing the basics and interlinkages of oxidative stress, its modulators and diabetes mellitus. It may add to the understanding of and insight into the pathophysiology of diabetes and the crucial role of antioxidants to weaken the complications and morbidity resulting from this chronic disease.

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