title: Mule duck "foie gras" shows different metabolic states according to its quality phenotype by using a proteomic approach.
abstract: This study aimed at identifying the mechanisms implicated in "foie gras" quality variability through the study of the relationships between liver protein compositions and four liver quality phenotypes: liver weight, melting rate, and protein contents on crude or dry matter. Spots of soluble proteins were separated by bidimensional electrophoresis, and the relative abundance of proteins according to quality traits values was investigated. Twenty-three protein spots (19 unique identified proteins) showed different levels of abundance according to one or more of the traits' values. These abundance differences highlighted two groups of livers with opposite trends of abundance levels. Proteins of the first group, associated with low liver weight and melting rate, are involved in synthesis and anabolism processes, whereas proteins of the second group, associated with high liver weight and melting rate, are proteins involved in stress response. Altogether, these results highlight the variations in metabolic states underlying foie gras quality traits.
authors: Université de Pau et des Pays de l'Adour, UMR5254 Institut Pluridisciplinaire de Recherche sur l'Environnement et les Matériaux - Equipe Environnement et Microbiologie (IPREM-EEM), 40004 Mont de Marsan Cedex, France.
authors: Yoannah
authors: Y
authors: François
authors: Christel
authors: C
authors: Marie-Etancelin
authors: Alain
authors: A
authors: Vignal
authors: Didier
authors: D
authors: Viala
authors: Stéphane
authors: S
authors: Davail
authors: Caroline
authors: C
authors: Molette
mesh_terms: D000818:Animals; D004372:Ducks; D015180:Electrophoresis, Gel, Two-Dimensional; D008099:Liver / Q000033:anatomy & histology / Q000378:metabolism*; D008297:Male; D040901:Proteomics