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Histological Comparison of Lipofilling and Hyaluronic Acid Filler Injection 30 Days after Simulation in Rats.
E A Lavrenteva1, M V Khlystalov2, S E Moroz2
1Peoples' Friendship University of Russia, Moscow, Russia. laveelina@ya.ru.
Summary
Autologous fat grafting (lipofilling) offers more uniform adipose tissue distribution than hyaluronic acid fillers. Hyaluronic acid fillers increased epidermis thickness, while lipofilling decreased sebaceous gland area in rats.
Area of Science:
- Dermatology
- Plastic Surgery
- Regenerative Medicine
Background:
- Autologous fat grafting and hyaluronic acid fillers are popular aesthetic treatments.
- Histological data comparing their long-term effects are crucial for understanding tissue integration and host responses.
Purpose of the Study:
- To perform a histological comparison of lipofilling versus hyaluronic acid filler injection in a rat model.
- To evaluate tissue distribution, cellular changes, and host tissue responses to each filler type.
Main Methods:
- Histological analysis of tissue samples from rats treated with either lipofilling or hyaluronic acid fillers.
- Evaluation at 30 days post-treatment to assess tissue integration and inflammatory responses.
Main Results:
- Lipofilling demonstrated more uniform adipose tissue distribution compared to hyaluronic acid fillers at 30 days.
- Lipofilling resulted in a decrease in the area of sebaceous glands.
- Hyaluronic acid fillers led to increased epidermis thickness, granular layer, and dermis growth.
Conclusions:
- Autologous fat grafting promotes better adipose tissue integration and reduces sebaceous gland size.
- Hyaluronic acid fillers induce epidermal and dermal thickening, representing a different tissue remodeling response.
