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The Association Between Serum Palmitic Acid and Thyroid Function.

Guowei Zhou¹, Yumeng Xu², Yuqing Zhai¹

¹Department of General Surgery, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China.

Frontiers in Endocrinology

|May 20, 2022

Summary

This summary is machine-generated.

This study found that higher levels of serum palmitic acid (sPA) are linked to lower free thyroxine (FT4) and a higher free triiodothyronine to free thyroxine ratio (FT3/FT4), suggesting a connection between lipotoxicity and thyroid dysfunction.

Keywords:

NHANES cross-sectional analysis free thyroxine palmitic acid thyroid function

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Area of Science:

Endocrinology
Metabolic Health
Nutritional Science

Background:

Palmitic acid (PA) is implicated in various disease processes.
Limited research exists on the association between PA and thyroid function.
Investigating serum PA (sPA) and thyroid function is crucial for understanding metabolic health.

Purpose of the Study:

To examine the relationship between serum palmitic acid (sPA) levels and thyroid function parameters in the US population.
To explore potential links between lipotoxicity, specifically PA, and thyroid dysfunction.

Main Methods:

Retrospective cross-sectional analysis of NHANES data (2011-2012).
Assessed thyroid parameters including FT3, FT4, TT3, TT4, Tg, TSH, TgAb, and TPOAb.
Utilized TFQI, TT4RI, TSHI for central sensitivity and FT3/FT4 ratio for peripheral sensitivity.
Employed multivariable regression, subgroup, and interaction analyses after multiple imputation for missing data.

Main Results:

A significant negative association was observed between sPA and FT4.
A significant positive association was found between sPA and the FT3/FT4 ratio.
These associations were more pronounced in males and obese individuals.

Conclusions:

Serum palmitic acid is significantly correlated with thyroid dysfunction.
Findings suggest a potential link between lipotoxicity and hypothyroidism or subclinical hypothyroidism.
Further research is warranted to confirm these associations and elucidate underlying mechanisms.