NDLI: The Association of Circulating Amino Acids and Dietary Inflammatory Potential with Muscle Health in Chinese Community-Dwelling Older People

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The Association of Circulating Amino Acids and Dietary Inflammatory Potential with Muscle Health in Chinese Community-Dwelling Older People

Content Provider	MDPI
Author	Su, Yi Elshorbagy, Amany Turner, Cheryl Refsum, Helga Kwok, Timothy
Copyright Year	2022
Description	Amino acids (AAs) and dietary inflammatory potential play essential roles in muscle health. We examined the associations of dietary inflammatory index (DII) of habitual diet with serum AA profile, and ascertained if the associations between DII and muscle outcomes were mediated by serum AAs, in 2994 older Chinese community-dwelling men and women (mean age 72 years) in Hong Kong. Higher serum branched chain AAs (BCAAs), aromatic AAs and total glutathione (tGSH) were generally associated with better muscle status at baseline. A more pro-inflammatory diet, correlating with higher serum total homocysteine and cystathionine, was directly (90.2%) and indirectly (9.8%) through lower tGSH associated with 4-year decline in hand grip strength in men. Higher tGSH was associated with favorable 4-year changes in hand grip strength, gait speed and time needed for 5-time chair stands in men and 4-year change in muscle mass in women. Higher leucine and isoleucine were associated with decreased risk of sarcopenia in men; the associations were abolished after adjustment for BMI. In older men, perturbations in serum sulfur AAs metabolism may be biomarkers of DII related adverse muscle status, while the lower risk of sarcopenia with higher BCAAs may partly be due to preserved BMI.
Starting Page	2471
e-ISSN	20726643
DOI	10.3390/nu14122471
Journal	Nutrients
Issue Number	12
Volume Number	14
Language	English
Publisher	MDPI
Publisher Date	2022-06-15
Access Restriction	Open
Subject Keyword	Nutrients Gerontology Amino Acids Dietary Inflammatory Potential Muscle Aging
Content Type	Text
Resource Type	Article

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