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Postprandial inflammation across the aging spectrum.

Bryant H Keirns1, Natalie G Keirns1, Christina M Sciarrillo2

  • 1Department of Nutrition and Health Science, Ball State University, Muncie, 47306 IN, United States.

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Summary
This summary is machine-generated.

Older adults may experience heightened postprandial inflammation after high-fat meals, specifically an increased interleukin-6 (IL-6) response. Analyzing age continuously reveals this link more effectively than age categories.

Keywords:
AgingCardiovascular diseasePostprandial inflammation

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Area of Science:

  • Nutrition Science
  • Immunology
  • Cardiovascular Disease Research

Background:

  • Postprandial inflammation following high-fat meals is a potential contributor to cardiovascular disease (CVD).
  • While CVD risk increases with age, it remains unclear if older adults exhibit greater postprandial inflammation.

Purpose of the Study:

  • To investigate the relationship between age and postprandial inflammatory markers after a high-fat meal.
  • To determine if analyzing age continuously versus categorically impacts the observed associations.

Main Methods:

  • Cross-sectional study involving 56 healthy adults aged 20-69 years.
  • Measured inflammatory cytokines (IL-1β, IL-6, IL-8, IL-10, TNF-α) at baseline and up to 6 hours post-high-fat meal.
  • Analyzed data using paired t-tests, ANCOVA (age groups), and linear regression (continuous age).

Main Results:

  • Interleukin-1 beta (IL-1β), IL-6, and IL-8 levels increased significantly post-meal in the full sample.
  • No significant differences in postprandial cytokine responses were generally found when analyzing age by distinct categories.
  • Continuous analysis revealed a positive association between age and the incremental area under the curve (AUC) for IL-6.

Conclusions:

  • Increasing age is associated with a more pronounced interleukin-6 (IL-6) response to high-fat meals.
  • Continuous analysis of age may offer greater insight into the relationship between aging and postprandial inflammation compared to categorical age grouping.