Subject terms
NLFs, pain
ADVERSE REACTIONS
Autologous cultured fibroblast injections for soft tissue augmentation are a potential alternative to other filler materials. No studies have compared autologous fibroblast injections and hyaluronic acid (HA) fillers for treating nasolabial folds (NLFs). To compare the efficacies and safeties of autologous cultured fibroblast injections and HA fillers for treating NLFs. This prospective, evaluator-blinded, pilot study enrolled 60 Thai female adult patients diagnosed with moderate to severe NLFs. They were randomized to receive either 3 treatments of autologous fibroblasts at 2-week intervals or 1 treatment with HA fillers. The primary outcome was the clinical improvement of the NLFs graded by 2 blinded dermatologists immediately after injection and at 1-, 3-, 6-, and 12-month follow-ups. Objective measurement of the NLF volume was evaluated. Patient self-assessment scores, pain scores, and adverse reactions were recorded. Of the 60 patients, 55 (91.7%) completed the study protocol. The NLF volumes improved significantly in the autologous fibroblast group at all follow-ups relative to baseline (