Apoptosis and macrophage infiltration occur simultaneously and present a potential sign of muscle injury in skeletal muscle of nutritionally compromised, early post-hatch turkeys

Physical stress and malnutrition may cause elimination of myonuclei and produce inflammatory response in muscle. The objective of this study was to histochemically determine the association of apoptosis and/or macrophage infiltration with changes in muscle satellite cell mitotic activity in pectoral...

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Bibliographic Details
Published in:Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular Biology 2009-05, Vol.153 (1), p.61-65
Main Authors: Nierobisz, L.S, Felts, J.V., Mozdziak, P.E.
Format: Article
Language:English
Subjects:
Amino acids
Analysis of Variance
Animal Nutritional Physiological Phenomena - physiology
Animals
Apoptosis
Apoptosis - physiology
Feed deprivation
Macrophages
Macrophages - metabolism
Muscle
Muscle, Skeletal - metabolism
Muscle, Skeletal - physiopathology
Poultry Diseases - diagnosis
Poultry Diseases - metabolism
Poultry Diseases - physiopathology
Satellite cells
Turkey
Turkeys
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Summary:Physical stress and malnutrition may cause elimination of myonuclei and produce inflammatory response in muscle. The objective of this study was to histochemically determine the association of apoptosis and/or macrophage infiltration with changes in muscle satellite cell mitotic activity in pectoralis thoracicus muscle of early post-hatch turkey toms. Feed-deprived birds and birds provided with three different levels of crude protein and amino acids (0.88 NRC, 1.00 NRC, and 1.12 NRC) were used in this model. The number of apoptotic nuclei was significantly elevated ( P < 0.05) and presence of macrophage infiltration was readily detectable in feed-deprived and 0.88 NRC treatment groups 72 h and 96 h post-hatch suggesting potential muscle injury and/or muscle remodeling. The number of apoptotic nuclei was the same ( P > 0.05), and there was no detectable macrophage infiltration present in birds placed on 1.00 NRC and 1.12 NRC diet 72 h, 96 h, and 120 h post-hatch. At 120 h post-hatch, feed-deprived and 0.88 NRC birds were characterized by no detectable levels of macrophage infiltration and a significant drop ( P < 0.05) in apoptotic nuclei . Understanding mechanisms that correlate early nutrition with skeletal muscle growth and development may present a useful tool in optimizing muscle health and improving meat quality and yield.
ISSN:1096-4959
1879-1107
DOI:10.1016/j.cbpb.2009.01.015