Grape skin extract-derived polyphenols modify programming-induced renal endowment in prenatal protein-restricted male...

Area of Science:

• Perinatal nutrition and developmental origins of health and disease.
• Renal physiology and nephrogenesis.
• Oxidative stress and antioxidant defense mechanisms.

Background:

• Maternal protein restriction during pregnancy is linked to oxidative stress and impaired kidney development in offspring.
• This can lead to long-term renal dysfunction and health issues.
• Polyphenols from grape skin extract (ACH09) are known for their antioxidant properties.

Purpose of the Study:

• To investigate the protective effects of vinifera grape skin extract (ACH09)-derived polyphenols on renal morphology in offspring exposed to maternal protein restriction.
• To evaluate the impact of ACH09 on oxidative stress markers and renal development parameters.

Main Methods:

• Pregnant mice were fed either a control or a low-protein diet, with or without ACH09 supplementation.
• Offspring renal morphology, including glomerular number and maturity, was assessed.
• Hepatic antioxidant enzyme activities (superoxide dismutase, catalase) and renal lipid peroxidation were measured.

Main Results:

• Maternal protein restriction reduced offspring birth weight and length, which ACH09 supplementation restored.
• Protein restriction increased kidney and liver lipid peroxidation and decreased catalase activity; ACH09 reversed these effects.
• ACH09 prevented glomerular loss and renal immaturity in offspring exposed to maternal protein restriction.

Conclusions:

• Treatment with ACH09 during pregnancy protects offspring from adverse renal morphological changes induced by maternal protein restriction.
• The protective mechanisms of ACH09 likely involve its antioxidant actions and potential vasodilator effects.
• This suggests ACH09 as a potential therapeutic strategy to mitigate developmental kidney damage from nutritional insults.