Abstract
Diabetes Mellitus (DM) is referred to as hyperglycemia in either fasting or postprandial
phases. Oxidative stress, which is defined by an excessive amount of reactive oxygen species
(ROS) production, increased exposure to external stress, and an excessive amount of the cellular
defense system against them, results in cellular damage. Increased DNA damage is one of the
main causes of genomic instability, and genetic changes are an underlying factor in the emergence
of cancer. Through covalent connections with DNA and proteins, quercetin has been demonstrated
to offer protection against the creation of oxidative DNA damage. It has been found that
quercetin shields DNA from possible oxidative stress-related harm by reducing the production of
ROS. Therefore, Quercetin helps to lessen DNA damage and improve the ability of DNA repair
mechanisms. This review mainly focuses on the role of quercetin in repairing DNA damage and
compensating for drug resistance in diabetic patients. Data on the target topic was obtained from
major scientific databases, including SpringerLink, Web of Science, Google Scholar, Medline
Plus, PubMed, Science Direct, and Elsevier. In preclinical studies, quercetin guards against DNA
deterioration by regulating the degree of lipid peroxidation and enhancing the antioxidant defense
system. By reactivating antioxidant enzymes, decreasing ROS levels, and decreasing the levels of
8-hydroxydeoxyguanosine, Quercetin protects DNA from oxidative damage. In clinical studies, it
was found that quercetin supplementation was related to increased antioxidant capacity and decreased
risk of type 2 diabetes mellitus in the experimental group as compared to the placebo
group. It is concluded that quercetin has a significant role in DNA repair in order to overcome
drug resistance in diabetes.
Keywords:
Diabetes mellitus, querectin, dna damage, drug resistance, antioxidants, cancer.
Graphical Abstract
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