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Pejšková L, Rønning SB, Kent MP, Solberg NT, Høst V, Thu-Hien T, Wold JP, Lunde M, Mosleth E, Pisconti A, Kolset SO, Carlson CR, Pedersen ME. Characterization of wooden breast myopathy: a focus on syndecans and ECM remodeling. Front Physiol 2023; 14:1301804. [PMID: 38130476 PMCID: PMC10737271 DOI: 10.3389/fphys.2023.1301804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 11/06/2023] [Indexed: 12/23/2023] Open
Abstract
Introduction: The skeletal muscle deformity of commercial chickens (Gallus gallus), known as the wooden breast (WB), is associated with fibrotic myopathy of unknown etiology. For future breeding strategies and genetic improvements, it is essential to identify the molecular mechanisms underlying the phenotype. The pathophysiological hallmarks of WB include severe skeletal muscle fibrosis, inflammation, myofiber necrosis, and multifocal degeneration of muscle tissue. The transmembrane proteoglycans syndecans have a wide spectrum of biological functions and are master regulators of tissue homeostasis. They are upregulated and shed (cleaved) as a regulatory mechanism during tissue repair and regeneration. During the last decades, it has become clear that the syndecan family also has critical functions in skeletal muscle growth, however, their potential involvement in WB pathogenesis is unknown. Methods: In this study, we have categorized four groups of WB myopathy in broiler chickens and performed a comprehensive characterization of the molecular and histological profiles of two of them, with a special focus on the role of the syndecans and remodeling of the extracellular matrix (ECM). Results and discussion: Our findings reveal differential expression and shedding of the four syndecan family members and increased matrix metalloproteinase activity. Additionally, we identified alterations in key signaling pathways such as MAPK, AKT, and Wnt. Our work provides novel insights into a deeper understanding of WB pathogenesis and suggests potential therapeutic targets for this condition.
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Affiliation(s)
| | | | - Matthew Peter Kent
- Center for Integrative Genetics, Department of Animal and Aquacultural Sciences, Faculty of Biosciences (BIOVIT), Norwegian University of Life Sciences (NMBU), Ås, Norway
| | | | - Vibeke Høst
- Raw Materials and Optimization, Nofima AS, Ås, Norway
| | - To Thu-Hien
- Center for Integrative Genetics, Department of Animal and Aquacultural Sciences, Faculty of Biosciences (BIOVIT), Norwegian University of Life Sciences (NMBU), Ås, Norway
| | | | - Marianne Lunde
- Institute for Experimental Medical Research, Oslo University Hospital and University of Oslo, Oslo, Norway
| | - Ellen Mosleth
- Raw Materials and Optimization, Nofima AS, Ås, Norway
| | | | - Svein Olav Kolset
- Department of Nutrition, Institute of Basic Medical Science, University of Oslo, Oslo, Norway
| | - Cathrine Rein Carlson
- Institute for Experimental Medical Research, Oslo University Hospital and University of Oslo, Oslo, Norway
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