PMID- 22459824 OWN - NLM STAT- MEDLINE DCOM- 20120810 LR - 20131121 IS - 1525-3198 (Electronic) IS - 0022-0302 (Linking) VI - 95 IP - 4 DP - 2012 Apr TI - Alterations of fatty acid beta-oxidation capability in the liver of ketotic cows. PG - 1759-66 LID - 10.3168/jds.2011-4580 [doi] AB - Dairy cows are highly susceptible to ketosis after parturition. In the present study, we evaluated the expression of fatty acid beta-oxidation-related enzymes in the liver of ketotic (n=6) and nonketotic (n=6) cows. Serum levels of nonesterified fatty acids (NEFA), beta-hydroxybutyrate (BHBA), and glucose were determined by using standard biochemical techniques. The mRNA abundance and protein content of acyl-CoA synthetase long-chain (ACSL), carnitine palmitoyltransferase I (CPT I), carnitine palmitoyltransferase II (CPT II), acyl-CoA dehydrogenase long chain (ACADL), 3-hydroxy-3-methylglutaryl-CoA synthase (HMGCS), and acetyl-CoA carboxylase (ACC) were evaluated by real-time PCR and ELISA. We found that serum glucose levels were lower in ketotic cows than in nonketotic cows, but serum BHBA and NEFA concentrations were higher. Messenger RNA and protein levels of ACSL were significantly higher in livers of ketotic cows than those in nonketotic cows. In contrast, mRNA levels of CPT I and mRNA and protein levels of CPT II, ACADL, HMGCS, and ACC were decreased in the liver of ketotic cows. Serum NEFA concentration positively correlated with ACSL protein levels and negatively correlated with protein levels of CPT II, HMGCS, ACADL, and ACC. In addition, serum BHBA concentration negatively correlated with protein levels of CPT II, HMGCS, and ACADL. Overall, fatty acid beta-oxidation capability was altered in the liver of ketotic compared with nonketotic cows. Furthermore, high serum NEFA and BHBA concentrations play key roles in affecting pathways of fatty acid metabolism in the liver. CI - Copyright (c) 2012 American Dairy Science Association. Published by Elsevier Inc. All rights reserved. FAU - Li, P AU - Li P AD - Department of Clinical Veterinary Medicine, College of Animal Science and Veterinary Medicine, Jilin University, Changchun 130062, Jilin, China. FAU - Li, X B AU - Li XB FAU - Fu, S X AU - Fu SX FAU - Wu, C C AU - Wu CC FAU - Wang, X X AU - Wang XX FAU - Yu, G J AU - Yu GJ FAU - Long, M AU - Long M FAU - Wang, Z AU - Wang Z FAU - Liu, G W AU - Liu GW LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Dairy Sci JT - Journal of dairy science JID - 2985126R RN - 0 (Blood Glucose) RN - 0 (Fatty Acids) RN - 0 (Fatty Acids, Nonesterified) RN - 0 (RNA, Messenger) RN - EC 1.3.- (Acyl-CoA Dehydrogenases) RN - EC 2.3.1.21 (Carnitine O-Palmitoyltransferase) RN - EC 2.3.3.10 (Hydroxymethylglutaryl-CoA Synthase) RN - EC 6.2.1.- (Coenzyme A Ligases) RN - EC 6.4.1.2 (Acetyl-CoA Carboxylase) RN - TZP1275679 (3-Hydroxybutyric Acid) SB - IM MH - 3-Hydroxybutyric Acid/blood MH - Acetyl-CoA Carboxylase/analysis/genetics MH - Acyl-CoA Dehydrogenases/analysis/genetics MH - Animals MH - Blood Glucose/analysis MH - Carnitine O-Palmitoyltransferase/analysis/genetics MH - Cattle MH - Cattle Diseases/*enzymology MH - Coenzyme A Ligases/analysis/genetics MH - Fatty Acids/*metabolism MH - Fatty Acids, Nonesterified/blood MH - Female MH - Hydroxymethylglutaryl-CoA Synthase/analysis/genetics MH - Ketosis/enzymology/*veterinary MH - Liver/*enzymology MH - Oxidation-Reduction MH - Puerperal Disorders/enzymology/*veterinary MH - RNA, Messenger/analysis EDAT- 2012/03/31 06:00 MHDA- 2012/08/11 06:00 CRDT- 2012/03/31 06:00 PHST- 2011/05/27 00:00 [received] PHST- 2011/12/14 00:00 [accepted] PHST- 2012/03/31 06:00 [entrez] PHST- 2012/03/31 06:00 [pubmed] PHST- 2012/08/11 06:00 [medline] AID - S0022-0302(12)00141-5 [pii] AID - 10.3168/jds.2011-4580 [doi] PST - ppublish SO - J Dairy Sci. 2012 Apr;95(4):1759-66. doi: 10.3168/jds.2011-4580.