Astaxanthin limits fish oil-related oxidative insult in the anterior forebrain of Wistar rats: Putative anxiolytic effects?

Autor(es)

Mattei, Rita ^[1] ; Polotow, Tatiana G. ^[2] ; Vardaris, Cristina V. ^[2] ; Guerra, Beatriz A. ^[3] ; Leite, Jose Roberto ^[1] ; Otton, Rosemari ^{[3, 2]} ; Barros, Marcelo P. ^{[3, 2]}

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Paulo, Dept Psychobiol, BR-04023062 Sao Paulo - Brazil

^[2] Univ Cruzeiro Sul, Inst Phys Act & Sport Sci, Postgrad Program, BR-01506000 Sao Paulo - Brazil

^[3] Univ Cruzeiro Sul, CBS, Postgrad Program, BR-08060070 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Pharmacology Biochemistry and Behavior; v. 99, n. 3, p. 349-355, SEP 2011.
• Citações Web of Science: 18

Resumo

The habitual consumption of marine fish is largely associated to human mental health. Fish oil is particularly rich in n-3 polyunsaturated fatty acids that are known to play a role. in several neuronal and cognitive functions. In parallel, the orange-pinkish carotenoid astaxanthin (ASTA) is found in salmon and displays important antioxidant and anti-inflammatory properties. Many neuronal dysfunctions and anomalous psychotic behavior (such as anxiety, depression, etc.) have been strongly related to the higher sensitivity of cathecolaminergic brain regions to oxidative stress. Thus, the aim of this work was to study the combined effect of ASTA and fish oil on the redox status in plasma and in the monoaminergic-rich anterior forebrain region of Wistar rats with possible correlations with the anxiolytic behavior. Upon fish oil supplementation, the downregulation of superoxide dismutase and catalase activities combined to increased ``free{''} iron content resulted in higher levels of lipid and protein oxidation in the anterior forebrain of animals. Such harmful oxidative modifications were hindered by concomitant supplementation with ASTA despite ASIA-related antioxidant protection was mainly observed in plasma. Although it is clear that ASTA properly crosses the brain-blood barrier, our data also address a possible indirect role of ASTA in restoring basal oxidative conditions in anterior forebrain of animals: by improving GSH-based antioxidant capacity of plasma. Preliminary anxiolytic tests performed in the elevated plus maze are in alignment with our biochemical observations. (C) 2011 Elsevier Inc. All rights reserved. (AU)

• Processo FAPESP: 02/09405-9 - Estudo da atividade antioxidante da astaxantina em lipossomos unilamelares: bloqueando radicais livres e afetando a permeabilidade da membrana?
• Beneficiário: Marcelo Paes de Barros
• Linha de fomento: Auxílio à Pesquisa - Apoio a Jovens Pesquisadores
• Processo FAPESP: 07/03334-6 - Avaliação dos efeitos anti-oxidantes da astaxantina e seu papel regulador na funcionalidade de neutrófilos e linfócitos de diabéticos
• Beneficiário: Rosemari Otton
• Linha de fomento: Auxílio à Pesquisa - Regular
• Processo FAPESP: 09/12342-8 - Ação do carotenóide astaxantina na regulação do equilíbrio redox no músculo esquelético de ratos sob atividade física exaustiva (natação): projeto AstaSwim
• Beneficiário: Andréa Ramalho Mihaliuc
• Linha de fomento: Bolsas no Brasil - Mestrado