Two Methods of AuNPs Synthesis Induce Differential Vascular Effects. The Role of the Endothelial Glycocalyx

Frontiers in Medicine

Gabriela Palestino¹  Gabriela Navarro-Tovar²  Daniel Alberto Maldonado-Ortega³  Carmen Gonzalez³  Gabriel Martínez-Castañón⁴ 

[1] Centro de Investigacion en Ciencias de la Salud y Biomedicina, Universidad Autonoma de San Luis Potosi, San Luis Potosi, Mexico;Consejo Nacional de Ciencia y Tecnología, Benito Juarez, Mexico;Facultad de Ciencias Quimicas, Universidad Autonoma de San Luis Potosi, San Luis Potosi, Mexico;Facultad de Ciencias, Universidad Autonoma de San Luis Potosi, San Luis Potosi, Mexico;

关键词: gold nanoparticles;    aorta;    vascular tone;    endothelium;    glycocalyx;    nitric oxide;   

DOI  :  10.3389/fmed.2022.889952

来源: DOAJ

【 摘 要 】

AuNPs are synthesized through several methods to tune their physicochemical properties. Although AuNPs are considered biocompatible, a change in morphology or properties can modify their biological impact. In this work, AuNPs (~12 to 16 nm) capping with either sodium citrate (CA) or gallic acid (GA) were evaluated in a rat aorta ex vivo model, which endothelial inner layer surface is formed by glycocalyx (hyaluronic acid, HA, as the main component), promoting vascular processes, most of them dependent on nitric oxide (NO) production. Results showed that contractile effects were more evident with AuNPsCA, while dilator effects predominated with AuNPsGA. Furthermore, treatments with AuNPsCA and AuNPsGA in the presence or absence of glycocalyx changed the NO levels, differently. This work contributes to understanding the biological effects of AuNPs with different capping agents, as well as the key role that of HA in the vascular effects induced by AuNPs in potential biomedical applications.

【 授权许可】

Unknown