Volume 110, Issue 6 pp. 1234-1244
RESEARCH ARTICLE

Effects of the intranasal application of gold nanoparticles on the pulmonary tissue after acute exposure to industrial cigarette smoke

Germano Duarte Porto

Germano Duarte Porto

Laboratory of Experimental Pathophysiology, Graduate Program in Health Sciences, Universidade do Extremo Sul Catarinense, Criciúma, Brazil

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Daniela Pacheco dos Santos Haupenthal

Daniela Pacheco dos Santos Haupenthal

Laboratory of Experimental Pathophysiology, Graduate Program in Health Sciences, Universidade do Extremo Sul Catarinense, Criciúma, Brazil

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Priscila Soares Souza

Priscila Soares Souza

Laboratory of Experimental Pathophysiology, Graduate Program in Health Sciences, Universidade do Extremo Sul Catarinense, Criciúma, Brazil

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Gustavo de Bem Silveira

Gustavo de Bem Silveira

Laboratory of Experimental Pathophysiology, Graduate Program in Health Sciences, Universidade do Extremo Sul Catarinense, Criciúma, Brazil

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Renata Tiscoski Nesi

Renata Tiscoski Nesi

Biochemistry in Health, Graduate Program in Health Sciences, Medicine School, Pontifícia Universidade Católica do Paraná, Puerto Rico, Brazil

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Paulo Emilio Feuser

Paulo Emilio Feuser

Laboratory of Experimental Pathophysiology, Graduate Program in Health Sciences, Universidade do Extremo Sul Catarinense, Criciúma, Brazil

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Jonathann Corrêa Possato

Jonathann Corrêa Possato

Laboratory of Experimental Pathophysiology, Graduate Program in Health Sciences, Universidade do Extremo Sul Catarinense, Criciúma, Brazil

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Vanessa Moraes de Andrade

Vanessa Moraes de Andrade

Translational Biomedicine Laboratory, Graduate Program of Health Sciences, Department of Health Sciences, Universidade do Extremo Sul Catarinense, Criciúma, Brazil

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Ricardo Aurino Pinho

Ricardo Aurino Pinho

Biochemistry in Health, Graduate Program in Health Sciences, Medicine School, Pontifícia Universidade Católica do Paraná, Puerto Rico, Brazil

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Paulo Cesar Lock Silveira

Corresponding Author

Paulo Cesar Lock Silveira

Laboratory of Experimental Pathophysiology, Graduate Program in Health Sciences, Universidade do Extremo Sul Catarinense, Criciúma, Brazil

Correspondence

Paulo Cesar Lock Silveira, UNESC – Universidade do Extremo Sul Catarinense PPGCS – Programa de Pós-Graduação em Ciências da Saúde, Av. Universitária, 1105 – Bairro Universitário, Criciúma – SC CEP, 88806-000, Brazil.

Email: [email protected]

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First published: 11 December 2021
Citations: 1

Funding information: This work was supported by CAPES-001, FAPESC, CNPQ, and UNESC.

Abstract

Inhalation of harmful particles appears as a primary factor for the onset and establishment of chronic obstructive pulmonary disease (COPD). Cigarette smoke acutely promotes an exacerbated inflammatory response with oxidative stress induction with DNA damage. Administration of Gold Nanoparticles (GNPs) with 20 nm in different concentrations can revert damages caused by external aggravations. The effects of GNPs in a COPD process have not been observed until now. The objective of this work was to evaluate the therapeutic effects of intranasal administration of different doses of GNPs after acute exposure to industrial cigarette smoke. Thirty male Swiss mice were randomly divided into five groups: Sham; cigarette smoke (CS); CS + GNPs 2.5 mg/L; CS + GNPs 7.5 mg/L and CS + GNPs 22.5 mg/L. The animals were exposed to the commercial cigarette with filter in an acrylic inhalation chamber and treated with intranasal GNPs for five consecutive days. The results demonstrate that exposure to CS causes an increase in inflammatory cytokines, histological changes, oxidative and nitrosive damage in the lung, as well as increased damage to the DNA of liver cells, blood plasma and lung. Among the three doses of GNPs (2.5, 7.5, and 22.5 mg/L) used, the highest dose had better anti-inflammatory effects. However, GNPs at a dose of 7.5 mg/L showed better efficacies in reducing ROS formation, alveolar diameter, and the number of inflammatory cells in histology, in addition to significantly reduced rate of DNA damage in lung cells without additional systemic genotoxicity already caused by cigarette smoke.

CONFLICT OF INTEREST

The authors declare no conflict of interest.

DATA AVAILABILITY STATEMENT

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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