Fluorescence Enhancement Effect of TiO2 Nanoparticles and Application for Photodynamic Diagnosis.
Int J Mol Sci
; 20(15)2019 Jul 28.
Article
em En
| MEDLINE
| ID: mdl-31357730
ABSTRACT
Photodynamic diagnosis (PDD) can improve diagnostic accuracy by using PDD agents such as 5-aminolevulinic acid (ALA). However, the weakness and photobleaching of fluorescence of PDD agents may lead to insufficient fluorescence visibility for the detection of cancer during resection operations. We focused on the "fluorescence enhancement effect" resulting from the addition of polyethylene glycol-modified titanium dioxide nanoparticles (TiO2-PEG NPs) to address these problems. The results showed that the combined administration of TiO2-PEG NPs and ALA could enhance and prolong fluorescence in bladder cancer cells, similar to in the mixture alone. It was suggested that the fluorescence enhancement was related to the accumulation of TiO2-PEG NPs in cells via endocytosis, causing the light scattering and enhancement of fluorescence. This fluorescence enhancement effect could be applicable for PDD.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Titânio
/
Neoplasias da Bexiga Urinária
/
Ácido Aminolevulínico
/
Neoplasias
Tipo de estudo:
Diagnostic_studies
Limite:
Humans
Idioma:
En
Revista:
Int J Mol Sci
Ano de publicação:
2019
Tipo de documento:
Article
País de afiliação:
Japão