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Título: | Starving/re-feeding processes induce metabolic modifications in thick-lipped grey mullet (Chelon labrosus, Risso 1827) |
Autor: | Pujante Rodríguez, Isabel; Martos-Sitcha, Juan Antonio CSIC ORCID; Moyano, Francisco Javier; Ruiz-Jarabo, Ignacio CSIC ORCID; Martínez-Rodríguez, Gonzalo CSIC ORCID ; Mancera, Juan Miguel | Palabras clave: | Chelon labrosus Food deprivation Metabolism GH/IGF-I system |
Fecha de publicación: | feb-2015 | Editor: | Elsevier | Citación: | Comparative Biochemistry and Physiology - B - Biochemistry and Molecular Biology 180: 57-67 (2015) | Resumen: | The effects of starvation and re-feeding on metabolites and tissue composition, GH/IGF-I axis, and digestive enzyme activities in juvenile thick-lipped grey mullet (Chelon labrosus) were evaluated. Fish were divided into three feeding groups (n = 72, 82.00 ± 4.09 g initial body mass). The control group was fed 1% of their body mass once a day throughout the experiment with commercial pellets. The other two groups were deprived of feed for 21 days (starved), or re-fed for 7 days after 14 days of food deprivation (re-fed). Full-length cDNAs from pituitary GH and hepatic IGF-I were cloned by screening a cDNA library or by PCR techniques. Furthermore, changes in their mRNA expressions were assessed by real time PCR in specimens maintained under the different feeding patterns. Results showed a negative growth in starved and re-feeding groups. Starvation induced a significant increase in plasma triglycerides as well as a decrease in liver glucose and glycogen. Re-feeding increased plasma glucose, lactate and protein, as well as liver glucose and glycogen. In addition, starvation significantly increased pituitary GH expression, while re-feeding down-regulated it. No significant changes were observed in hepatic IGF-I expression in any dietary treatment. Digestive enzyme activities were not significantly affected either by starvation or by re-feeding. The results of the present work suggest that juveniles of the thick-lipped grey mullet may easily adjust their metabolism under situations characterized by a short-term starvation and re-feeding. | Versión del editor: | https://doi.org/10.1016/j.cbpb.2014.10.005 | URI: | http://hdl.handle.net/10261/170459 | DOI: | 10.1016/j.cbpb.2014.10.005 | ISSN: | 1096-4959 |
Aparece en las colecciones: | (ICMAN) Artículos |
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