Send to

Choose Destination
J Cosmet Laser Ther. 2017 Aug;19(4):227-231. doi: 10.1080/14764172.2017.1293829. Epub 2017 Feb 16.

TP53 and ATM mRNA expression in skin and skeletal muscle after low-level laser exposure.

Author information

a Departamento de Ciências Fisiológicas , Instituto Biomédico, Universidade Federal do Estado do Rio de Janeiro , Rio de Janeiro , Brazil.
b Departamento de Biofísica e Biometria , Instituto de Biologia Roberto Alcantara Gomes, Universidade do Estado do Rio de Janeiro , Rio de Janeiro , Brazil.
c Departamento de Morfologia , Instituto de Ciências Biológicas, Universidade Federal de Juiz de Fora , Juiz de Fora , Brazil.
d Centro de Ciências da Saúde , Centro Universitário Serra dos Órgãos , Rio de Janeiro , Brazil.


Low-level lasers are widespread in regenerative medicine, but the molecular mechanisms involved in their biological effects are not fully understood, particularly those on DNA stability. Therefore, this study aimed to investigate mRNA expression of genes related to DNA genomic stability in skin and skeletal muscle tissue from Wistar rats exposed to low-level red and infrared lasers. For this, TP53 (Tumor Protein 53) and ATM (Ataxia Telangiectasia Mutated gene) mRNA expressions were evaluated by real-time quantitative PCR (RT-qPCR) technique 24 hours after low-level red and infrared laser exposure. Our data showed that relative TP53 mRNA expression was not significantly altered in both tissues exposed to lasers. For ATM, relative mRNA expression in skin tissue was not significantly altered, but in muscle tissue, laser exposure increased relative ATM mRNA expression. Low-level red and infrared laser radiations alter ATM mRNA expression related to DNA stability in skeletal muscle tissue.


DNA; RT-qPCR; Wistar rats; gene expression; laser

[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Taylor & Francis
Loading ...
Support Center