Mitochondrial dysfunction and targeted drugs: a focus on diabetes
Victor M Victor1, Milagros Rocha, Celia Bañuls
1University Hospital Doctor Peset Foundation, Avda Gaspar Aguilar 90, 46017, Valencia, Spain. Victor.Victor@uv.es
Abstract:
Diabetes is a severe, heterogeneous, multifactorial, chronic disease. Diabetes and oxidative stress are related to continuous and acute overproduction of reactive oxygen species (ROS). These ROS are released principally from mitochondria, but also have other sources. Oxidative stress seems to play an important role in mitochondria-mediated disease processes, though the exact molecular mechanisms responsible remain elusive. ROS are necessary for the proper functioning of the cell, but their excessive production can be harmful, making antioxidant defenses essential. Some substances with antioxidant properties, such as vitamins C and E, have been used to eradicate the oxidative stress associated with diabetes. The results of clinical trials employing anti-oxidative stress reagents in patients with diabetes are contradictory, perhaps due to inadequate study design or the specific targets selected. This review considers the process of diabetes from a mitochondrial perspective and evaluates strategies currently under development for the targeted delivery of antioxidants or other molecules to mitochondria. The evidence compiled herein endorses the selective targeting of specific molecules to mitochondria as an effective strategy for modulating mitochondrial respiration and ROS production and protecting mitochondria against oxidative stress.
Insights
Targeting mitochondria with antioxidants can combat diabetes-related oxidative stress. This strategy aims to modulate mitochondrial respiration and reactive oxygen species (ROS) production for better disease management.
Area of Science:
- Biochemistry
- Cell Biology
- Endocrinology
Background:
- Diabetes mellitus is a chronic, multifactorial disease linked to oxidative stress from excessive reactive oxygen species (ROS) production.
- Mitochondria are a primary source of ROS, and their dysfunction is implicated in diabetes pathogenesis, though mechanisms are not fully understood.
- While antioxidants like vitamins C and E have been explored, clinical trial results for managing diabetes-related oxidative stress are inconsistent.
Purpose of the Study:
- To review the role of mitochondria in diabetes-related oxidative stress.
- To evaluate strategies for targeted delivery of therapeutic molecules to mitochondria.
- To assess the potential of mitochondrial-targeted antioxidants in diabetes treatment.
Main Methods:
- Literature review focusing on mitochondrial dysfunction in diabetes.
- Analysis of current strategies for targeted molecular delivery to mitochondria.
- Evaluation of evidence supporting mitochondrial antioxidant therapy.
Main Results:
- Mitochondrial dysfunction and ROS overproduction are central to diabetes pathophysiology.
- Targeted delivery systems are being developed to specifically deliver antioxidants to mitochondria.
- Evidence suggests that selective mitochondrial targeting can effectively modulate respiration and ROS levels.
Conclusions:
- Targeting specific molecules to mitochondria represents a promising strategy for managing diabetes-associated oxidative stress.
- This approach may protect mitochondria and improve outcomes in diabetes by modulating key cellular processes.
- Further research into targeted mitochondrial therapies is warranted for effective diabetes treatment.
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