title: Morphological Analysis of Reticuloendothelial System in Capuchin Monkeys (Sapajus spp.) after Meso-2,3-Dimercaptosuccinic Acid (DMSA) Coated Magnetic Nanoparticles Administration.
abstract: Magnetic nanoparticles can be used for numerous in vitro and in vivo applications. However, since uptake by the reticuloendothelial system represents an obstacle for the achievement of nanoparticle diagnostic and therapeutic goals, the aim of the present study was to evaluate the uptake of dimercaptosuccinic acid coated magnetic nanoparticles by reticuloendothelial system phagocytic cells present in lymph nodes, spleen, and liver tissue and how the presence of these particles could have an impact on the morphology of these organs in capuchin monkeys (Sapajus spp.). Animals were intravenously injected with dimercaptosuccinic acid coated magnetic nanoparticles and euthanized 12 hours and 90 days post-injection. Organs were processed by transmission electron microscopy and histological techniques. Samples of spleen and lymph nodes showed no morphological changes. Nevertheless, liver samples collected 90 days post-administration showed slight morphological alteration in space of Disse. Moreover, morphometrical analysis of hepatic mitochondria was performed, suggesting a clear positive correlation between mitochondrial area and dimercaptosuccinic acid coated magnetic nanoparticles administration time. The present results are directly relevant to current safety considerations in clinical diagnostic and therapeutic uses of magnetic nanoparticles.
authors.affiliation: Department of Genetics and Morphology, Institute of Biological Sciences, University of Brasília, 70910-900 Brasília-DF, Brazil.
authors.forename: Shélida
authors.initials: S
authors.lastname: Vasconcelos Braz
authors.affiliation: Laboratory of Nanobiotechnology, Department of Genetics and Morphology, Institute of Biological Sciences, University of Brasília, 70910-900 Brasília-DF, Brazil.
authors.forename: Victoria
authors.initials: V
authors.lastname: Monge-Fuentes
authors.affiliation: Laboratory of Nanobiotechnology, Department of Genetics and Morphology, Institute of Biological Sciences, University of Brasília, 70910-900 Brasília-DF, Brazil.
authors.forename: Jaqueline
authors.initials: J
authors.lastname: Rodrigues da Silva
authors.affiliation: Primate Center and Laboratory of Neurosciences and Behavior, Department of Physiological Sciences, Institute of Biology, University of Brasília, 70910-900 Brasília, DF, Brazil.|Neurocience Graduate Program, University CEUMA, São Luis, MA, Brazil.
authors.forename: Carlos
authors.initials: C
authors.lastname: Tomaz
authors.affiliation: Primate Center and Laboratory of Neurosciences and Behavior, Department of Physiological Sciences, Institute of Biology, University of Brasília, 70910-900 Brasília, DF, Brazil.
authors.forename: Maria Clotilde
authors.initials: MC
authors.lastname: Tavares
authors.affiliation: Laboratory of Nanobiotechnology, Department of Genetics and Morphology, Institute of Biological Sciences, University of Brasília, 70910-900 Brasília-DF, Brazil.
authors.forename: Monica
authors.initials: M
authors.lastname: Pereira Garcia
authors.affiliation: Laboratory of Electron Microscopy, Department of Cell Biology, University of Brasília, 70919-970 -Brasília, DF, Brazil.
authors.forename: Sônia
authors.initials: S
authors.lastname: Nair Báo
authors.affiliation: Department of Genetics and Morphology, Institute of Biological Sciences, University of Brasília, 70910-900 Brasília-DF, Brazil.
authors.forename: Silene
authors.initials: S
authors.lastname: Paulino Lozzi
authors.affiliation: Laboratory of Nanobiotechnology, Department of Genetics and Morphology, Institute of Biological Sciences, University of Brasília, 70910-900 Brasília-DF, Brazil.
authors.forename: Ricardo
authors.initials: R
authors.lastname: Bentes de Azevedo
mesh_terms: D000818:Animals; D002428:Cebus; D008099:Liver / Q000033:anatomy & histology / Q000648:ultrastructure; D008198:Lymph Nodes / Q000033:anatomy & histology / Q000648:ultrastructure; D008280:Magnetics; D046529:Microscopy, Electron, Transmission; D008930:Mitochondria, Liver; D012157:Mononuclear Phagocyte System / Q000033:anatomy & histology* / Q000648:ultrastructure; D053758:Nanoparticles; D013154:Spleen / Q000033:anatomy & histology / Q000648:ultrastructure; D004113:Succimer / Q000008:administration & dosage*
chemical_list: D004113:Succimer