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Previous issue date: 2015-05-22 === Sem bolsa === A neutropenia é um efeito adverso ocasionado após a administração de drogas antineoplasicas, como a ciclofosfamida, usada para tratamento de diferentes neoplasias. A vitamina C é um micronutriente antioxidante e imunomodulador, mas pouco se sabe sobre sua ação frente à neutropenia. Dessa forma o objetivo do presente trabalho foi avaliar a suplementação de Vitamina C sobre neutropenia induzida por ciclofosfamida (CLF) e perda de peso em camundongos. O estudo foi realizado com a suplementação de vitamina C 50 mg/kg intraperitoneal (i.p) por 7 dias em camundongos fêmeas, Swiss albino, adultas, imunossuprimidas com CLF, divididos em quatro grupos com 8 animais cada: Grupo controle (água destilada i.p.), CLF (150 mg/kg i.p. no dia 1 e 100 mg/kg i.p. no dia 4), vitamina C (50 mg/kg i.p., diariamente) e CLF + vit C (Ciclofosfamida 250 mg/kg i.p. e vitamina C 50 mg/kg i.p). O grupo CLF apresentou perda significativa de peso de 24% no terceiro dia em relação ao grupo controle. Quando co-administradas a vitamina C e CLF houve uma interação significativa, ou seja, a vitamina C intensificou a diminuição de neutrófilos. A vitamina C não interferiu nos valores de leucócitos. Os resultados mostraram que a suplementação de vitamina C 50 mg/kg i.p. por 7 dias intensificou a neutropenia induzida por ciclofosfamida (250 mg/kg i.p.) e não preveniu a perda peso ponderal induzida por CLF em camundongos ao final do experimento biológico. === Neutropenia is caused adverse effect after administration of antineoplastic drugs, such as cyclophosphamide, used for treatment of different neoplasms. Vitamin C is an antioxidant and immunomodulatory micronutrient, but little is known about its action against the neutropenia. Thus the aim of this study was to evaluate the supplementation of Vitamin C on cyclophosphamide-induced neutropenia (CLF) and weight loss in mice. The study was conducted with vitamin supplementation C 50 mg /kg intraperitoneal (i.p.) for 7 days in female mice, Swiss albino, adult, immunosuppressed with CLF, divided into four groups of eight animals each: Control group (distilled water i.p.) , CLF (150 mg / kg i.p. on day 1 and 100 mg / kg i.p. on day 4), vitamin C (50 mg / kg i.p., daily) and CLF + VITC (Cyclophosphamide 250 mg /kg i.p. and vitamin C 50 mg / kg i.p.). The CLF group showed significant weight loss of 24% on the third day compared to the control group. When co-administered vitamin C and CLF there was a significant interaction, so, vitamin C enhanced the decrease in neutrophils. Vitamin C did not interfere with leukocyte values. The results showed that supplementation of vitamin C 50 mg / kg i.p. for 7 days intensified neutropenia induced by cyclophosphamide (250 mg / kg i.p.) and the weight did not prevent weight loss in mice induced CLF the end of the biological experiment.
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