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OBJECTIVE: This study aims to evaluate the citotoxic activity of two commonly used anti-depressants: paroxetine and bupropion. We also evaluated the in vitro natural killer activity (NKA) after incubating the blood samples with the antidepressants. METHODS: Peripheral blood samples from 15 healthy volunteers were collected and the mononuclear cells (PBMCs) were isolated and incubated for 24h with (or without = control cells) paroxetine and bupropion, in concentrations of 30, 100 and 1000 ng/ml. After the incubation period in both groups, the amount of dead cells was calculated using trypam blue technique. NKA was evaluated using the classic51Cr release assay. CONCLUSIONS: PBMCs dead cells occurred in both groups and in proportion to all pharmacological concentrations. Nevertheless, the NKA was not affected, even with the reduction in the number of effective cells. OBJETIVO: Avaliar o efeito citotóxico de dois antidepressivos comumente utilizados na prática, a paroxetina e a bupropriona. Além disso, buscou-se avaliar a atividade natural killer (ANK) após a incubação dos linfócitos com esses fármacos. MÉTODOS: Sangue venoso de 15 participantes foi coletado e as células mononucleares (PBMCs) foram separadas e incubadas por 24h com (ou sem = grupo-controle) concentrações de paroxetina e bupropiona em 30, 100 e 1.000 ng/ml. Após a incubação, a quantidade das células mortas foi contada utilizando-se o método trypan blue. Posteriormente foi avaliada a ANK por meio do ensaio clássico de liberação do Cr51. CONCLUSÕES: Ocorreu morte celular de PBMCs proporcionais às doses dos fármacos, no entanto, a ANK não foi afetada, mesmo com a redução do número de células efetoras

jornal brasileiro de psiquiatria

Selective serotonin-reuptake inhibitor and norepinephrine dopamine reuptake inhibitor antidepressants do not affect natural killer cell activity in vitro