Comparative study of the neurotoxicological effects of tramadol and tapentadol in SH-SY5Y cells

• Tipo: Artigo em Revista Científica Internacional
• Data: 2016

Autores

Faria, J (Autor) Outra; Barbosa, J (Autor) Outra; Queiros, O (Autor) Outra; Moreira, R (Autor) Outra; Felix Carvalho (Autor) FFUP; Ricardo Jorge Dinis Oliveira (Autor) FMUP

Revista

Título: Toxicology

Vol. 359

Páginas: 1-10

ISSN: 0300-483X

Editora: Elsevier

Indexação

ISI Web of Knowledge - 31 Citações

Scopus - 31 Citações

Outras Informações

ID Authenticus: P-00K-W2Z

DOI: 10.1016/j.tox.2016.06.010

Abstract (EN): Opioid therapy and abuse are increasing, justifying the need to study their toxicity and underlying mechanisms. Given opioid pharmacodynamics at the central nervous system, the analysis of toxic effects in neuronal models gains particular relevance. The aim of this study was to compare the toxicological effects of acute exposure to tramadol and tapentadol in the undifferentiated human SH-SY5Y neuroblastoma cell line. Upon exposure to tramadol and tapentadol concentrations up to 600 mu M, cell toxicity was assessed through evaluation of oxidative stress, mitochondrial and metabolic alterations, as well as cell viability and death mechanisms through necrosis or apoptosis, and related signalling. Tapentadol was observed to trigger much more prominent toxic effects than tramadol, ultimately leading to energy deficit and cell death. Cell death was shown to predominantly occur through necrosis, with no alterations in membrane potential or in cytochrome c release. Both drugs were shown to stimulate glucose uptake and to cause ATP depletion, due to changes in the expression of energy metabolism enzymes. The toxicity mechanisms in such a neuronal model are relevant to understand adverse reactions to these opioids and to contribute to dose adjustment in order to avoid neurological damage.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 10