Improving Low-Density Fat by Condensing Cellular and Collagen Content through a Mechanical Process: Basic Research...

Area of Science:

• Regenerative Medicine
• Biomaterials Science
• Plastic Surgery

Background:

• Large-volume fat grafting faces challenges with high absorption and complication rates.
• Low-density fat, characterized by low cell viability and high oil content, contributes to nodules and oil cysts.
• This study investigates a novel strategy to improve fat grafting by mechanically condensing low-density fat.

Observation:

• Low-density fat was emulsified and re-centrifuged to create condensed low-density fat.
• Analysis revealed condensed low-density fat had increased stromal vascular fraction cells and collagens.
• In vivo studies in nude mice demonstrated improved retention and reduced adverse histological changes.

Findings:

• Condensed low-density fat exhibited significantly higher retention rates (55.0%) compared to low-density fat (31.1%) and Coleman fat (41.1%) at 12 weeks.
• The condensed fat showed fewer oil cysts and reduced macrophage infiltration.
• Clinical application in breast reconstruction and augmentation yielded good long-term volume retention.

Implications:

• Mechanical condensation of low-density fat is a viable method to enhance fat graft survival and reduce complications.
• This technique improves the quality of lipoaspirates for large-volume fat grafting procedures.
• The strategy offers a promising approach for more predictable and successful fat augmentation outcomes.