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2006: Lemus-Varela M L; Sola A; Gómez-Meda B C; Zamora-Perez A L; Ramos-Ibarra M L; Batista-González C M; Zúñiga-González G M
Oral sildenafil citrate lacks genotoxicity and cytotoxicity in a primate model: Callithrix jacchus.
Journal of perinatology : official journal of the California Perinatal Association 2006;26(7):423-7.
OBJECTIVE: To determine sildenafil citrate (SC) genotoxicity and cytotoxicity in the Callithrix jacchus. STUDY DESIGN: Fifteen organisms were assigned to one of three groups as follows: experimental (25 mg/kg of SC); negative control (glucose solution 5%); and positive control (3 mg/kg of cytocine arabinoside). Systemic hemodynamic changes were monitored in each animal before and after each treatment. A drop of blood was obtained before and after the treatment at 24-120 h. Smears were made and the frequency of micronucleated erythrocytes (MNE), micronucleated polychromatic erythrocytes (MNPCE) and polychromatic erythrocytes (PCE) was counted. RESULTS: No significant differences in MNE, MNPCE and PCE were found in the group that received sildenafil and negative control. A significant increase in genotoxicity and cytotoxicity was observed in the positive control group. No changes were observed in systemic hemodynamic changes. CONCLUSION: The macro-dose of SC lacks genotoxic, cytotoxic or systemic hemodynamic changes effects in this species.

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