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Wang Z, Karrar E, Wang Y, Liu R, Chang M, Wang X. The bioactive of four dietary sources phospholipids on heavy metal-induced skeletal muscle injury in zebrafish: A comparison of phospholipid profiles. FOOD BIOSCI 2022. [DOI: 10.1016/j.fbio.2022.101630] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Li D, Wang Q, Shi K, Lu Y, Yu D, Shi X, Du W, Yu M. Testosterone Promotes the Proliferation of Chicken Embryonic Myoblasts Via Androgen Receptor Mediated PI3K/Akt Signaling Pathway. Int J Mol Sci 2020; 21:ijms21031152. [PMID: 32050491 PMCID: PMC7037377 DOI: 10.3390/ijms21031152] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 02/03/2020] [Accepted: 02/06/2020] [Indexed: 01/18/2023] Open
Abstract
Testosterone (T) is essential for muscle fiber formation and growth. However, the specific mechanism by which T regulates skeletal muscle development in chicken embryos remains unclear. In this study, the role of T in myoblast proliferation both in vivo and in vitro was investigated. Results showed that the T administration significantly increased the ratio of breast muscle and leg muscle. T induced a significant increase in the cross-sectional area (CSA) and density of myofiber and the ratio of PAX7-positive cells in the skeletal muscle. Exogenous T also induced the upregulation of myogenic regulatory factors (MRFs) and cyclin-dependent kinases (CDK2)/Cyclin D1 (CCND1) and protein levels of androgen receptor (AR), p-Akt and PAX7. Furthermore, T treatment significantly promoted myoblasts cultured in vitro entering a new cell cycle and increased PAX7-positive cells. The mRNA and protein expression of AR and PAX7 were upregulated when treated with T compared to that of the control. The addition of T induced proliferation accompanied by increasing AR level as well as PI3K (Phosphoinositide 3-kinase)/Akt activation. However, T-induced proliferation was attenuated by AR, PI3K, and Akt-specific inhibitors. These data indicated that the pro-proliferative effect of T was regulated though AR in response to the activation of PI3K/Akt signalling pathway.
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Affiliation(s)
- Dongfeng Li
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China; (D.L.); (Q.W.); (K.S.); (Y.L.); (D.Y.); (W.D.)
| | - Qin Wang
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China; (D.L.); (Q.W.); (K.S.); (Y.L.); (D.Y.); (W.D.)
| | - Kai Shi
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China; (D.L.); (Q.W.); (K.S.); (Y.L.); (D.Y.); (W.D.)
| | - Yinglin Lu
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China; (D.L.); (Q.W.); (K.S.); (Y.L.); (D.Y.); (W.D.)
| | - Debing Yu
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China; (D.L.); (Q.W.); (K.S.); (Y.L.); (D.Y.); (W.D.)
| | - Xiaoli Shi
- National Experimental Teaching Demonstration Center for Animal Science, Nanjing Agricultural University, Nanjing 210095, China;
| | - Wenxing Du
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China; (D.L.); (Q.W.); (K.S.); (Y.L.); (D.Y.); (W.D.)
| | - Minli Yu
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China; (D.L.); (Q.W.); (K.S.); (Y.L.); (D.Y.); (W.D.)
- Correspondence: ; Tel.: +86-25-84395036
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