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Feeding increases MyoD and PCNA expression in myogenic progenitor cells of Notothenia coriiceps

Brodeur, J.C.; Peck, Lloyd S.; Johnston, I.A.. 2002 Feeding increases MyoD and PCNA expression in myogenic progenitor cells of Notothenia coriiceps. Journal of Fish Biology, 60 (6). 1475-1785. 10.1006/jfbi.2002.2007

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Abstract/Summary

Oxygen consumption and ammonia excretion of the Antarctic fish Notothenia corikeps (18.4 cm L-F) increased respectively two and fourfold above fasting levels 24 h after feeding with a single meal of shrimps (5.5 to 7.5% of body mass), and remained elevated for 120 h. In fasted fish, c-met positive cells in the fast muscle represented 5.5% of the total number of myonuclei. The number of c-met positive cells staining for the proliferating cell nuclear antigen was increased by 60% both 24 and 96 h after the meal, while the number of cells expressing the myogenic transcription factor, MyoD, was increased by 20% after 24 h, and by 44% after 96 h. The total numbers of c-met positive cells and cells expressing myogenin were not significantly altered 96 h following feeding. The results are consistent with an activation of myogenic progenitor cells proliferation by feeding but suggest a relatively long cell cycle time. (C) 2002 The Fisheries Society of the British Isles.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1006/jfbi.2002.2007
Programmes: BAS Programmes > Antarctic Science in the Global Context (2000-2005) > Life at the Edge - Stresses and Thresholds
ISSN: 0022-1112
Additional Keywords: myogenic precursor; satellite cell; SDA; MyoD; myogenin; Antarctic fish
NORA Subject Terms: Marine Sciences
Zoology
Biology and Microbiology
Date made live: 21 Sep 2011 11:05
URI: http://nora.nerc.ac.uk/id/eprint/13172

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