1. Nanomedicine and Nanotoxicology Group, Physics Institute of São Carlos, São Paulo University, Avenida Trabalhador São Carlense, 400, 13566-590 São Carlos, São Paulo, Brazil
2. Unit for Drug Discovery, Department of Parasitology, Institute of Biomedical Sciences, University of Sao Paulo, Av. Prof. Lineu Prestes 1374, 05508-000 Sao Paulo, Sao Paulo, Brazil