Whole transcriptome analysis of the pectoralis major muscle reveals molecular mechanisms involved with white striping in broiler chickens
| Autor: | Mônica Corrêa Ledur, Luiz Lehmann Coutinho, Maurício Egídio Cantão, C. M. M. Marciano, J. R. C. Pandolfi, Matthew L. Settles, J. A. P. Marchesi, Adriana Mércia Guaratini Ibelli, Ricardo Zanella, Jane de Oliveira Peixoto |
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| Rok vydání: | 2018 |
| Předmět: |
Male
Programmed cell death Muscle disorder Biology Pectoralis Muscles Transcriptome 03 medical and health sciences Muscular Diseases medicine Animals Myopathy Poultry Diseases 030304 developmental biology 0303 health sciences Gene Expression Profiling Pectoralis major muscle 0402 animal and dairy science Broiler 04 agricultural and veterinary sciences General Medicine Striated muscle contraction 040201 dairy & animal science Phenotype Cell biology Animal Science and Zoology medicine.symptom Chickens |
| Zdroj: | Poultry science. 98(2) |
| ISSN: | 1525-3171 |
| Popis: | White striping (WS) is one of the most common myopathies identified in broiler chickens leading to substantial production losses, where the incidence reaches 12% in commercial chickens. It occurs primarily in heavier chickens being a modification of the breast muscle characterized by the presence of pale parallel streaks in the same orientation of the muscle fibers. Since the WS etiology remains unclear, we aimed to identify the biological and genetic mechanisms involved in its occurrence through the whole transcriptome analysis of WS in affected and unaffected chicken breast muscles. A total of 11,177 genes were expressed in the pectoralis major muscle. Out of those, 1,441 genes were differentially expressed (FDR ≤ 0.01) between the two analyzed groups, being, respectively, 772 genes upregulated and 669 downregulated in the WS affected group. A total of 36 significantly overrepresented GO terms related to WS myopathy were enriched, and the most relevant biological processes were activation of immune system, angiogenesis, hypoxia, cell death, and striated muscle contraction. The unbalance of those biological processes may trigger the occurrence of the WS phenotype in broilers. The possible lack of capillary blood supply homogeneously in the muscle triggers the hypoxia, following the activation of glycolysis, calcium signaling and apoptosis related genes facilitating the tissue damage and WS incidence. |
| Databáze: | OpenAIRE |
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