Pomegranate Extract Modulates Oxidative Stress by Reducing Basal ROS Levels and Protecting White Blood Cells from...

Area of Science:

• Gerontology
• Cellular Biology
• Nutritional Science

Background:

• Aging increases oxidative stress, leading to cellular dysfunction and age-related diseases.
• Antioxidant polyphenols in pomegranate extract (PE) show potential to counteract oxidative damage.
• Oxidative stress plays a key role in age-related physiological decline.

Purpose of the Study:

• To investigate if PE supplementation can modulate oxidative stress in aging mice.
• To assess the effect of PE on reactive oxygen species (ROS) levels in leukocytes.
• To determine PE's impact on cellular and mitochondrial ROS under basal and induced oxidative stress.

Main Methods:

• Aged mice (18 months) received PE supplementation for four months.
• Flow cytometry was used to measure cytoplasmic and mitochondrial ROS in leukocytes.
• Oxidative stress was induced using tert-butyl hydroperoxide (t-BHP).

Main Results:

• Aged mice showed elevated basal ROS in both cytoplasmic and mitochondrial compartments.
• PE supplementation mitigated these increased basal ROS levels.
• PE reversed t-BHP-induced hydrogen peroxide increases and reduced mitochondrial ROS in neutrophils.

Conclusions:

• Pomegranate extract supplementation effectively modulates the oxidative stress response in aging mice.
• PE may improve immune function in aging by reducing oxidative damage.
• PE represents a potential nutritional strategy for promoting healthy aging.