Time-dependent Changes in Retinoids Content in Liver and Adipose Tissue After Feeding of a Vitamin A-deficient Diet to Mice
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Vitamin A is an important nutrient for multiple physiological functions. To elucidate the role of vitamin A in vivo, vitamin A-deficient diets have been often used in mice to establish a vitamin A-deficiency model. However, the information on the appropriate feeding periods and time course of changes in vitamin A content in organs after the start of vitamin A-deficient diet feeding is lacking. This study aimed to assess the retinoids levels in liver and white adipose tissue in mice fed a vitamin A-deficient diet for ≤8 weeks. High-performance liquid chromatography was used to measure the retinoids levels in liver and white adipose tissue every 2 weeks for ≤8 weeks. Vitamin A-deficient diet feeding significantly decreased retinol in the liver over 6 weeks, but retinyl palmitate, a main storage form of vitamin A, was not changed over 8 weeks. The plasma retinol level remained constant throughout the experiment. In white adipose tissue, retinyl palmitate gradually decreased over 8 weeks. These results indicate that vitamin A-deficient diet feeding longer than 6 weeks reduced retinol in liver and retinyl palmitate in white adipose tissue over 8 weeks, although it is not enough for the induction of a whole-body vitamin A deficiency.
Kato K, Yasui H, Sato-Akaba H, Emoto M, Fujii H, Kmiec M Redox Rep. 2025; 30(1):2454887.
PMID: 39836064 PMC: 11753017. DOI: 10.1080/13510002.2025.2454887.