Obesity-related prepartal insulin resistance in dairy cows is associated with increased lipin 1 and decreased FATP 1 expression in skeletal muscle
2022
Autori:
Prodanović, RadišaKirovski, Danijela
Vujanac, Ivan
Đorđević, Ana
Romić, Snježana
Pantelić, Marija
Korićanac, Goran
Tip dokumenta:
Članak u časopisu (Recenzirana verzija)
,
© 2022 Elsevier Ltd.
Metapodaci
Prikaz svih podataka o dokumentuApstrakt:
A number of alterations have been identified in lipid metabolism within adipose tissue and liver in obesity. Less is
known about the capacity of skeletal muscle for the metabolism of fatty acids in obesity-related insulin resistance,
though it is evident that dry cow muscles may contain increased triglyceride content. The current study
was therefore undertaken to evaluate the skeletal muscle expression of proteins of the fatty acid metabolism in
dry cows with different body condition scores (BCS). Sixteen Holstein-Friesian close-up cows were divided into 2
equal groups based on their BCS as optimal (3.25 ≤ BCS ≤ 3.5) and high (4.0 ≤ BCS ≤ 4.25). Blood samples
collection and skeletal muscle biopsies were carried out at day 10 before calving. Blood serum was assayed for
concentration of resistin using a bovine specific ELISA. Protein expression of insulin receptor beta subunit (IRβ),
glucose transporter 4 (GLUT4), fatty acid translocase (FAT/CD36), fatty acid transporter 1 (FATP1), carnitine
palmitoyltransferase 1 (CPT1), AMP-acitvated protein kinase (AMPK) and lipin 1 were analyzed in semitendinosus
muscle by immunoblot. Resistin differed non-significantly between high-BCS and optimal-BCS cows.
Insulin-resistant lipid metabolism in obese cows was paralleled with increased skeletal muscle expression of lipin
1 and GLUT4, and decreased expression of IRβ and FATP1. These data suggest that in obesity-related insulin
resistance, metabolic capacity in dry cow skeletal muscles appears to be organized towards the synthesis of
signaling intermediates rather than fatty acids oxidation and that altered fatty acid uptake does not contribute to
this disposition.
Ključne reči:
cows; lipin1; FATP 1; Obesity; Skeletal muscleIzvor:
Research in Veterinary Science, 2022, 150, 189-194Finansiranje / projekti:
- Ministarstvo nauke, tehnološkog razvoja i inovacija Republike Srbije, institucionalno finansiranje - 200007 (Univerzitet u Beogradu, Institut za biološka istraživanja 'Siniša Stanković') (RS-MESTD-inst-2020-200007)
- Ministarstvo nauke, tehnološkog razvoja i inovacija Republike Srbije, institucionalno finansiranje - 200143 (Univerzitet u Beogradu, Fakultet veterinarske medicine) (RS-MESTD-inst-2020-200143)
- Ministarstvo nauke, tehnološkog razvoja i inovacija Republike Srbije, institucionalno finansiranje - 200017 (Univerzitet u Beogradu, Institut za nuklearne nauke Vinča, Beograd-Vinča) (RS-MESTD-inst-2020-200017)
DOI: 10.1016/j.rvsc.2022.04.012
ISSN: 0034-5288
PubMed: 35842950