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Effects of overfeeding on the fatty acid profile and stearoyl-CoA desaturase-1 indices in the liver and subcutaneous adipose tissue in cats
Author(s) -
Eiji Iwazaki,
Toshihiro Nade,
N. Kimura
Publication year - 2019
Publication title -
journal of veterinary medical science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 60
eISSN - 1347-7439
pISSN - 0916-7250
DOI - 10.1292/jvms.19-0105
Subject(s) - nefa , adipose tissue , medicine , endocrinology , cats , triglyceride , fatty acid , chemistry , biology , cholesterol , biochemistry
To evaluate the effect of overfeeding on fatty acid distribution and metabolism, especially stearoyl-CoA desaturase-1 (SCD-1) indices, 8 cats in the experimental and control groups (4 per group) were evaluated in this study. The experiments involved feeding the experimental group cats twice their daily energy requirement with a commercial diet for 4 weeks. The control group was fed the estimated daily energy requirement with the same diet. Body weight, feline body mass index, body condition score, several zoometry measurements, and plasma metabolites/hepatic injury markers were measured in all the cats before and after the experiment. In addition, the fatty acid profiles in the liver and subcutaneous adipose tissue were measured after the experiment. After 4 weeks of overfeeding, the experimental group demonstrated significant increases in hepatic C18:1, plasma triglyceride, and nonesterified fatty acid (NEFA) concentrations and in alanine aminotransferase activity. Furthermore, hepatic SCD-1 indices were positively correlated with body weight, feline body mass index, body condition score, and plasma NEFA concentration, although subcutaneous adipose tissue did not demonstrate any increase in SCD-1 indices in this study. The increase in hepatic SCD-1 indices might be enhanced by the inflow of plasma NEFA into the liver, and NEFA toxicity might stimulate C18:1 synthesis by SCD-1.

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