Evaluation of the Behaviour of Wrinkles Fibroblasts and Normal Aged Fibroblasts in the Presence of Poly-L-Lactic Acid


Background: Wrinkles are characterized by changes in the organization and structure of the dermis. Human wrinkle fibroblasts (WF) have a different functional behaviour in comparison with normal-aged fibroblasts (NF). Decreases in migration capacities and collagen I synthesis are observed. Mitochondrial function is impaired with an increase in lactate production during aging. Sculptra? (poly-L-lactic acid: PLLA), a biodegradable synthetic polymer, is used for subcutaneous volume restoration. Thus we decided to investigate different fibroblast functions when placed in contact with PLLA. Objectives: The potential of PLLA to compensate for the reduction of metabolic activity, to restore the migration capacity of WF and to inhibit the lactate production, was investigated and compared to NF. Methods: Two different skin samples were used from each of the three women’s facelift (one inside a face wrinkle and one from normal aged skin). Collagen I, lactate productions and proliferation capacities were investigated on monolayer cultures. Migration properties were evaluated using three-dimensional collagen lattices. Results: PLLA increased collagen I synthesis, restored migration capacities and tended to decrease lactate production in WF, whereas PPLA stimulated proliferation in NF and tended to improve the migration of NF. Conclusion: These results suggested that PLLA from Sculptra? acted as a stimulus for collagen production in WF and that it is suitable for correcting skin depressions, such as wrinkles.

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C. Courderot-Masuyer, S. Robin, H. Tauzin and P. Humbert, "Evaluation of the Behaviour of Wrinkles Fibroblasts and Normal Aged Fibroblasts in the Presence of Poly-L-Lactic Acid," Journal of Cosmetics, Dermatological Sciences and Applications, Vol. 2 No. 1, 2012, pp. 20-27. doi: 10.4236/jcdsa.2012.21006.

Conflicts of Interest

The authors declare no conflicts of interest.


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