A maternal high-fat diet may accelerate adipo-immunologic aging in offspring

Area of Science:

• Metabolic disease research
• Immunology
• Aging studies

Background:

• Maternal obesity and poor nutrition are linked to chronic metabolic diseases in offspring.
• The long-term impact of maternal high-fat diet on aging offspring is not well understood.

Purpose of the Study:

• To investigate the effects of a maternal high-fat diet on the metabolic and immunological aging of offspring.
• To determine how combined maternal and offspring high-fat diet exposure influences chronic disease development.

Main Methods:

• Female mice were fed high-fat (HF) or control (CON) diets before mating.
• Offspring were exposed to HF or CON diets post-weaning, creating four groups (CON/CON, CON/HF, HF/CON, HF/HF).
• Mice were immunized and sacrificed at 70 weeks for analysis.

Main Results:

• Maternal HF diet initially increased offspring body weight, which later decreased.
• Lower serum adiponectin and increased adiposity were observed in offspring from dams on HF diets.
• Non-alcoholic fatty liver disease, lobular inflammation, and fibrosis were more severe in HF-exposed offspring.
• Senescence-associated T cells increased, while natural killer T cells decreased due to HF diet exposure.

Conclusions:

• Maternal high-fat diet exposure significantly impacts offspring's metabolic and immune systems.
• The study demonstrates that maternal high-fat diet can accelerate adipo-immunologic aging.
• Combined maternal and offspring high-fat diet exacerbates liver disease and immune dysregulation.