Effects of tetracycline administration on the proteomic profile of pig muscle samples (L. dorsi)

M. Gratacos-Cubarsi, M. Castellari, M. Hortos, J.A. Garcia-Regueiro, R. Lametsch, Flemming Jessen

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Effect of tetracycline (TC) administration on the proteomic profile of pig muscle was evaluated by 2D electrophoresis and MALDI-TOF mass spectrometry. The TC content at slaughter was determined in L. dorsi samples by HPLC-DAD. Mean residual concentration of TC in the muscle of treated animals, calculated as the sum of TC and epi-TC was 126.3 mu g/kg, indicating a rapid elimination of TC in this tissue. Several differential spots (n = 54, p <0.05) were observed in protein profiles from control and treated animals. MALDI-TOF identification gave a positive match for 5 differential spots, that is, glycerol-3-phosphate dehydrogenase 1 (G3PD1), phosphoglycerate kinase 1, novelprotein (0610037L13Rik), leucine aminopeptidase 3 (LAP), and hypothetical protein isoform 2. Results show that proteomics could be a useful tool to reveal pharmacological treatments with TC, even if the possible uses of differential spots as biomarkers to detect illegal administration of TC require further studies. Different spot patterns as a consequence of TC treatments seem to be another interesting issue for the consequences on tissue metabolism and meat quality.
Original languageEnglish
JournalJournal of Agricultural and Food Chemistry
Volume56
Issue number19
Pages (from-to)9312-9316
ISSN0021-8561
DOIs
Publication statusPublished - 2008

Keywords

  • glycerol 3-phosphate dehydrogenase
  • proteomics
  • residue determination
  • tetracycline
  • pig

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