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Pollution Accelerates Aging in Diabetic Mice's Bones
30 Oct
Summary
- PM2.5 exposure hastened cellular aging in bone marrow stem cells.
- Diabetic mice showed increased fat in bone marrow and lower bone density.
- Study suggests people with diabetes may be more vulnerable to pollution.
A recent study has revealed that exposure to fine particulate matter (PM2.5) can accelerate cellular aging, impair stem cell function, and reduce bone mineral density in mice, particularly those with Type 2 diabetes. Researchers observed increased oxidative stress and cellular senescence in bone marrow stem cells.
The experiment involved exposing male mice to PM2.5, with diabetic mice showing greater damage. Their mesenchymal stem cells shifted towards fat formation, leading to increased fat accumulation and lower bone mineral density in femurs. These findings are relevant to India, where many adults live with diabetes.
Experts suggest that pollution-induced oxidative stress may exacerbate diabetes complications, potentially affecting bone health beyond respiratory and heart issues. However, definitive clinical evidence in India is still developing, necessitating stronger pollution control measures.
Further observations in diabetic mice included lung inflammation, liver injury, and changes in pancreatic islets. While an experimental inhibitor showed promise in reducing inflammation and damage markers, its efficacy in humans remains unestablished.
