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Manipulating Sirtuin 3 pathway ameliorates renal damage in experimental diabetes
Monica Locatelli1, Carlamaria Zoja1, Cristina Zanchi1
1Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Centro Anna Maria Astori, Science and Technology Park Kilometro Rosso, Bergamo, Italy.
Scientific Reports
|May 23, 2020
Summary
Honokiol, by activating Sirtuin 3 (SIRT3), protects kidneys in diabetic mice. This natural compound reduces oxidative stress and kidney damage, offering a potential new treatment for diabetic nephropathy.
Area of Science:
- Nephrology
- Endocrinology
- Mitochondrial Biology
Background:
- Diabetic nephropathy is a major health issue with limited treatments.
- Oxidative stress and reduced Sirtuin 3 (SIRT3) activity contribute to diabetic kidney damage.
- Honokiol, a natural compound, activates SIRT3 and exhibits antioxidant properties.
Purpose of the Study:
- To investigate the renoprotective effects of honokiol in a mouse model of type 2 diabetes.
- To explore the role of Sirtuin 3 (SIRT3) activation in mitigating diabetic nephropathy.
Main Methods:
- Treatment of BTBR ob/ob diabetic mice with honokiol or vehicle from 8 to 14 weeks of age.
- Assessment of renal Sirt3 expression, activity, reactive oxygen species (ROS) levels, and kidney damage markers.
- Evaluation of mitochondrial function markers like SOD2 and PGC-1α.
Main Results:
- Diabetic mice showed reduced renal Sirt3 expression and activity, with increased ROS.
- Honokiol treatment attenuated albuminuria, glomerular damage, and podocyte injury.
- SIRT3 activation by honokiol preserved mitochondrial function and enhanced tubular Sirt3 expression.
Conclusions:
- Sirtuin 3 (SIRT3) plays a protective role against diabetic glomerular disease.
- Pharmacological modulation of SIRT3 activity presents a potential therapeutic strategy for diabetic nephropathy.
