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Related Experiment Videos

Inflammatory markers in a randomised soya intervention among men.

Gertraud Maskarinec1, Robert Oum, Ann K Chaptman

  • 1Cancer Research Center of Hawaii, Honolulu, HI, USA. gertraud@crch.hawaii.edu

The British Journal of Nutrition
|December 17, 2008
PubMed
Summary

This study found no significant effect of soya foods on inflammatory markers in men. However, higher BMI and early-life soya intake were linked to increased leptin and monocyte attractant protein-1 (MCP-1) levels.

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Area of Science:

  • Nutrition Science
  • Human Physiology
  • Inflammation Research

Background:

  • Soya foods contain isoflavones, which may influence inflammatory markers.
  • Previous research on soya's impact on inflammation has yielded mixed results.
  • Understanding the relationship between diet, adiposity, and inflammation is crucial for public health.

Purpose of the Study:

  • To investigate the effect of high- versus low-soya diets on serum inflammatory markers.
  • To examine the association between Body Mass Index (BMI), lifetime soya intake, and these markers.
  • To assess serum levels of leptin, adiponectin, monocyte attractant protein-1 (MCP-1), macrophage inflammatory protein-1b (MIP-1b), IL-6, and C-reactive protein (CRP).

Main Methods:

  • A randomized crossover study involving 24 men over 3 months with a 1-month washout period.

Related Experiment Videos

  • High-soya (two servings/day, 30-35 mg isoflavones/serving) and low-soya diets were administered.
  • Multiplex bead immunoassays and ELISA were used to measure six inflammatory markers.

    • Main Results:

    • No significant intervention effect of soya treatment on any of the six inflammatory markers was observed.
    • Significant associations were found between BMI and body weight with leptin and MCP-1.
    • Higher early-life soya intake correlated with elevated leptin and MCP-1 levels, but not with intake during adulthood.

    Conclusions:

    • This small study found no direct impact of soya foods on measured inflammatory markers in men.
    • Adiposity and early-life soya consumption were associated with higher levels of leptin and MCP-1.
    • Further research is needed to clarify the long-term effects of soya intake on inflammatory pathways and metabolic health.