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Título: | Egg white hydrolysate promotes neuroprotection for neuropathic disorders induced by chronic exposure to low concentrations of mercury |
Autor: | Rizzetti, Danize Aparecida; Fernandez, Francisca; Moreno-Fernández, Silvia CSIC ORCID; Uranga-Ocio, José Antonio; Miguel, Marta CSIC ORCID ; Wiggers, Giulia Alessandra | Palabras clave: | Oxidative stress Egg white hydrolysate Motor behavioral disorders Mercury Peripheral neuropathy |
Fecha de publicación: | 2016 | Editor: | Elsevier | Citación: | Brain Research 1646: 482-489 (2016) | Resumen: | This study aims to investigate whether the egg white hydrolysate (EWH) acts on the neuropathic disorders associated with long-term Mercury (Hg) exposure in rats. 8- week-old male Wistar rats were treated for 60 days with: a) Control - saline solution (i.m.); b) Mercury - HgCl (1st dose 4.6 μg/kg, subsequent doses 0.07 μg/kg/day, i.m.); c) Hydrolysate - EWH (1 g/kg/day, gavage); d) Mercury and Hydrolysate. Mechanical allodynia was assessed using Von Frey Hairs test; heat hyperalgesia by the plantar test; catalepsy by a modification of the “ring test” and spontaneous locomotor activity by a photocell activity chambers. Analyses were performed at 0, 30 and 60 days of treatment. Brain and plasma MDA, plasma NPSH and TNF-α determination and skin immunohistochemistry were performed at 60 days. Hg induced a reduction in mechanical sensitivity threshold at 30 and 60 days and in thermal sensitivity threshold at 60 days. At the end of treatment catalepsy was developed, but there was not significant alteration in spontaneous locomotor activity. Hg also increased brain and plasma MDA, plasma NPSH and TNF-α levels and the number of Merkel cell–neurite complex in the skin. EWH prevented the development of mechanical allodynia, thermal hyperalgesia and catalepsy induced by Hg and the increase in MDA concentration in brain and plasma and in the number of Merkel cell–neurite complex in the skin. In conclusion, EWH promotes neuroprotection against the toxic effects caused by Hg, demonstrating a beneficial therapeutic potential. | URI: | http://hdl.handle.net/10261/150196 | DOI: | 10.1016/j.brainres.2016.06.037 | Identificadores: | doi: 10.1016/j.brainres.2016.06.037 e-issn: 1872-6240 issn: 0006-8993 |
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