Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.1/4619
Título: Effects of dietary amino acids and repeated handling on stress response and brain monoaminergic neurotransmitters in Senegalese sole (Solea senegalensis) juveniles
Autor: Costas, B.
Aragão, C.
Soengas, J. L.
Míguez, J. M.
Rema, P.
Dias, J.
Afonso, A.
Conceição, L. E. C.
Palavras-chave: Cortisol
Tyrosine
Dopamine
Tryptophan
Lysozyme activity
Serotonin
Data: 2012
Editora: Elsevier
Citação: Costas, B.; Aragão, C.; Soengas, J.L.; Míguez, J.M.; Rema, P.; Dias, J.; Afonso, A.; Conceição, L.E.C.Effects of dietary amino acids and repeated handling on stress response and brain monoaminergic neurotransmitters in Senegalese sole (Solea senegalensis) juveniles, Comparative Biochemistry and Physiology - A Molecular and Integrative Physiology, 161, 1, 18-26, 2012.
Resumo: The present study aimed to assess the effects of increased availability of dietary amino acids (AA) on brain monoamine neurotransmitters and the metabolic processes resulting from stressful situations in fish. Senegalese sole (Solea senegalensis) juveniles (24.2 ± 0.4 g wet mass) were weekly subjected to an acute handling stressor (HDLG) or remained undisturbed (CTL). Additionally, both treatments were fed a control or a high protein (HP) diet (CTL, CTL HP, HDLG and HDLG HP). The HP diet slightly increased the levels of digestible indispensable AA, together with tyrosine and cysteine. Repeated handling induced a stress response after 14 and 28 days in fish held at both HDLG and HDLG HP treatments. While dietary treatment and handling stress activated the serotonergic system at 14 days, these effects were not observed after 28 days. In addition, the HP diet minimized the decrease in plasma indispensable AA due to repeated handling stress after 28 days. It was concluded that HP diet decreased post-stress plasma glucose and lactate levels in HDLG HP specimens only at 14 days of treatment. Moreover, dietary treatment was also effective in stimulating DA synthesis and release, thus dietary phenylalanine supplementation can increase DA biosynthesis in fish.
Peer review: yes
URI: http://hdl.handle.net/10400.1/4619
ISSN: 0010-406X
Aparece nas colecções:CCM2-Artigos (em revistas ou actas indexadas)



FacebookTwitterDeliciousLinkedInDiggGoogle BookmarksMySpace
Formato BibTex MendeleyEndnote Degois 

Todos os registos no repositório estão protegidos por leis de copyright, com todos os direitos reservados.