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20 May 2019 : Laboratory Research  

Concentrated Growth Factors Can Inhibit Photoaging Damage Induced by Ultraviolet A (UVA) on the Human Dermal Fibroblasts In Vitro

Junyin Chen1ABCDEF, Dandan Jiao1BCEF, Meng Zhang1E, Shihong Zhong1E, Tai Zhang1E, Xiangyu Ren2E, Guiyun Ren1ABCEG*

DOI: 10.12659/MSM.913967

Med Sci Monit 2019; 25:3739-3749


BACKGROUND: Photoaging is the main cause of extrinsic skin aging. Daily exposure to ultraviolet A (UVA) accelerates the process of photoaging. The present study aimed to understand the role of concentrated growth factors (CGF) on UVA irradiated human skin cells.

MATERIAL AND METHODS: We isolated and subcultured normal human dermal fibroblasts (NHDFs) from 6 different human dorsal skins and established photoaging models of NHDFs irradiated by UVA to detect the influence of CGF on fibroblasts in vitro. Three groups were examined: normal, cellular photoaging model (total dosages of 18J·cm­­⁻²­), and cellular photoaging model plus CGF. In our study, we used the MTT (3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide) assay method to measure the cell viability. We also used reactive oxygen species (ROS) assay and superoxide dismutase (SOD) assay to measure respectively the amount of oxygen free radicals and antioxidative enzymes. We compared the migration rates among the photoaging model groups, the control groups, and the CGF-treated culture medium groups that were irradiated.

RESULTS: Our study results indicated that 5% CGF can reduce UVA-induced human skin fibroblasts damage significantly, improve the viability of NHDFs significantly, and largely decrease the UVA irradiation effect (P<0.05). The migration rates of the normal group and the UVA-irradiated NHDFs in the 5% CGF group had significantly increased migration rates (P<0.05), compared to the control medium group. The migration rates of the UVA-irradiated NHDFs in 5% CGF exceed those of the normal group. These results showed that 5% CGF could greatly promote cellular proliferation, migration, and SOD at the same time that the amounts of ROS were markedly decreased.

CONCLUSIONS: These experimental findings offer some important insights into CGF’s capacity for scavenging ROS, improving SOD, and increasing migration rates in NHDFs irradiated by UVA.

Keywords: Antioxidants, Reactive Oxygen Species, Skin Diseases, Superoxide Dismutase, Ultraviolet Rays, Cell Survival, Cells, Cultured, China, Dermis, Fibroblasts, Free Radicals, Intercellular Signaling Peptides and Proteins, primary cell culture, Skin, Skin Aging



01 October 2022 : Editorial  

Editorial: Rebound COVID-19 and Cessation of Antiviral Treatment for SARS-CoV-2 with Paxlovid and Molnupiravir

Dinah V. Parums
Science Editor, Medical Science Monitor, International Scientific Information, Inc., Melville, NY, USA

DOI: 10.12659/MSM.938532

Med Sci Monit 2022; 28:e938532


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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750