Abstract
Purpose of ReviewAlthough the molecular mechanism of insulin resistance involves multiple factors and several intrinsic and extrinsic mechanisms have been identified, this comprehensive review provides key information on some of the core mechanisms and complex interactions of the molecules involved in the signaling pathways of insulin resistance.Recent FindingsDiabetes Mellitus, the most common metabolic disorder, is one of the greatest global medical challenges at present. There has been a significant increase in complications associated with diabetes such as heart disorders, stroke, neuropathy, dyslipidemia, metabolic dysfunction-associated steatotic liver disease, and nephropathy. This calls for immediate strategic action to combat this complex metabolic disorder. Insulin resistance, a characteristic marker of type 2 diabetes is a condition in which the regulation of glucose metabolism in body tissues, such as the liver, adipose tissue, and skeletal muscle, becomes disrupted. It is generally associated with hyperglycemia, hyperinsulinemia, hyperlipidemia, and impaired glucose homeostasis.SummaryUnderstanding the pathophysiological molecular mechanisms involved in insulin resistance is critical for developing new therapeutic strategies to treat this polygenic multifactorial condition. Impairment of insulin action is caused by several factors such as lipotoxicity, increased adiposity, enhanced inflammatory signaling, endoplasmic reticulum stress, adipokines, mitochondrial dysfunction, increased free fatty acids, and dysfunctional insulin signaling.
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