Impact of poorly controlled type II diabetes mellitus on chemoresistance in colorectal cancer
Abstract
Type 2 diabetes mellitus (T2DM) significantly elevates the risk of colorectal cancer (CRC) and complicates its treatment by promoting chemoresistance. Poor glycemic control has been linked to exacerbated CRC progression and diminished chemotherapy efficacy, impacting patient outcomes through various mechanisms such as oxidative stress, activation of metabolic pathways, and altered protein modifications that hinder apoptosis and enhance tumor survival. Clinical evidence shows that T2DM patients experience higher rates of chemoresistance and reduced disease-free survival and overall survival compared to non-diabetic patients. Specifically, those with poor glycemic control exhibit increased chemoresistance and poorer survival metrics. Antidiabetic treatments, including metformin, acarbose, and gliclazide, show promise in improving chemotherapy response and glycemic management, potentially enhancing patient outcomes. Addressing this challenge requires a comprehensive, multidisciplinary approach involving oncologists, endocrinologists, and surgeons to optimize patient care. Integrated strategies that prioritize glycemic control are essential for reducing chemoresistance and improving survival in CRC patients with T2DM.
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