Long-Term Clearance and Biodistribution of Magnetic Nanoparticles Assessed by AC Biosusceptometry

Autor(es)

Soares, Guilherme A. ; Faria, Joao V. C. ; Pinto, Leonardo A. ; Prospero, Andre G. ; Pereira, Gabriele M. ; Stoppa, Erick G. ; Buranello, Lais P. ; Bakuzis, Andris F. ; Baffa, Oswaldo ; Miranda, Jose R. A.

• Tipo de documento: Artigo Científico
• Fonte: MATERIALS; v. 15, n. 6, p. 14-pg., 2022-03-01.

Resumo

Once administered in an organism, the physiological parameters of magnetic nanoparticles (MNPs) must be addressed, as well as their possible interactions and retention and elimination profiles. Alternating current biosusceptometry (ACB) is a biomagnetic detection system used to detect and quantify MNPs. The aims of this study were to evaluate the biodistribution and clearance of MNPs profiles through long-time in vivo analysis and determine the elimination time carried out by the association between the ACB system and MnFe2O4 nanoparticles. The liver, lung, spleen, kidneys, and heart and a blood sample were collected for biodistribution analysis and, for elimination analysis, and over 60 days. During the period analyzed, the animal's feces were also collectedd. It was possible to notice a higher uptake by the liver and the spleen due to their characteristics of retention and uptake. In 60 days, we observed an absence of MNPs in the spleen and a significant decay in the liver. We also determined the MNPs' half-life through the liver and the spleen elimination. The data indicated a concentration decay profile over the 60 days, which suggests that, in addition to elimination via feces, there is an endogenous mechanism of metabolization or possible agglomeration of MNPs, resulting in loss of ACB signal intensity. (AU)

• Processo FAPESP: 19/11277-0 - Mapeamento da distribuição de nanopartículas magnéticas em modelo de carcinoma hepatocelular através de imagens magnéticas
• Beneficiário: Gabriele Martins Pereira
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
• Processo FAPESP: 13/07699-0 - Centro de Pesquisa, Inovação e Difusão em Neuromatemática - NeuroMat
• Beneficiário: Oswaldo Baffa Filho
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs
• Processo FAPESP: 21/09829-4 - Biosusceptometria AC: modelos, instrumentações e aplicações
• Beneficiário: José Ricardo de Arruda Miranda
• Modalidade de apoio: Auxílio à Pesquisa - Regular