Interaction of Curcumin with Manganese May Compromise Metal and Neurotransmitter Homeostasis in the Hippocampus of Young Mice


Autoria(s): Schmitz, Ariana Ern; Oliveira, Paulo Alexandre de; Souza, Luiz F. de; Humberto da Silva, Danilo Gruenig; Danielski, Samara; Santos, Danubia Bonfanti; Almeida, Eduardo Alves de; Prediger, Rui Daniel; Fisher, Andrew; Farina, Marcelo; Dafre, Alcir Luiz
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

03/12/2014

03/12/2014

01/06/2014

Resumo

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Manganese (Mn) exposure is related to industrial activities, where absorption by inhalation has high relevance. Manganism, a syndrome caused as a result of excessive accumulation of Mn in the central nervous system, has numerous symptoms similar to those seen in idiopathic Parkinson disease (IPD). Some of these symptoms, such as learning, memory, sensorial, and neurochemical changes, appear before the onset of motor deficits in both manganism and IPD. The aim of this study was to evaluate the possible neuroprotective effects of curcumin against behavioral deficits induced by Mn toxicity in young (2 months old) Swiss mice. We evaluated the effect of chronic inhalation of a Mn mixture [Mn(OAc)(3) and MnCl2 (20:40 mM)], 1 h/session, three times a week, over a 14-week period on behavioral and neurochemical parameters. Curcumin was supplemented in the diet (500 or 1,500 ppm in food pellets). The Mn disrupted the motor performance evaluated in the single-pellet reach task, as well as the short- and long-term spatial memory evaluated in the step-down inhibitory avoidance task. Surprisingly, curcumin also produced similar deleterious effects in such behavioral tests. Moreover, the association of Mn plus curcumin significantly increased the levels of Mn and iron, and decreased the levels of dopamine and serotonin in the hippocampus. These alterations were not observed in the striatum. In conclusion, the current Mn treatment protocol resulted in mild deficits in motor and memory functions, resembling the early phases of IPD. Additionally, curcumin showed no beneficial effects against Mn-induced disruption of hippocampal metal and neurotransmitter homeostasis.

Formato

399-409

Identificador

http://dx.doi.org/10.1007/s12011-014-9951-5

Biological Trace Element Research. Totowa: Humana Press Inc, v. 158, n. 3, p. 399-409, 2014.

0163-4984

http://hdl.handle.net/11449/111301

10.1007/s12011-014-9951-5

WOS:000335771800017

Idioma(s)

eng

Publicador

Humana Press Inc

Relação

Biological Trace Element Research

Direitos

closedAccess

Palavras-Chave #Manganese #Curcumin #Idiopathic Parkinson disease #Memory #Motor performance
Tipo

info:eu-repo/semantics/article