Cryopreserved Subcutaneous Adipose Tissue for Fat Graft
Giamaica Conti1, Marcin Jurga, Donatella Benati
1Anatomy and Histology Section, Department of Neurological and Movement Sciences, University of Verona, Strada le Grazie 8, 37134, Verona, Italy, giamaica.conti@univr.it.
Aesthetic Plastic Surgery
|July 24, 2015
Summary
Cryopreservation maintains stem potential in subcutaneous white adipose tissue (sWAT), but thawed fat grafts show reduced survival and faster reabsorption. Further optimization of cryopreservation protocols is needed for reconstructive surgery applications.
Area of Science:
- Regenerative Medicine
- Tissue Engineering
- Adipose Tissue Biology
Background:
- Subcutaneous white adipose tissue (sWAT) cryopreservation can reduce the need for repeated surgeries in reconstructive procedures.
- Maintaining the viability and function of sWAT after cryopreservation is crucial for its application in regenerative medicine.
Purpose of the Study:
- To evaluate the impact of cryopreservation on the stem potential and in vivo survival of human sWAT grafts.
- To compare the graft survival, lipid storage, and adipocyte morphology of fresh versus cryopreserved sWAT in a mouse model.
Main Methods:
- Fat grafting of fresh or cryopreserved human sWAT into 26 mice (13 per group).
- In vitro analysis of stem cell marker expression and differentiation capability.
- In vivo assessment using MRI for graft volume and ultrastructural studies for lipid storage and adipocyte morphology.
Main Results:
- Cryopreservation did not affect the in vitro stem potential of sWAT samples.
- In vivo MRI revealed significantly reduced graft volumes after 1 week for cryopreserved sWAT compared to fresh sWAT.
- Ultrastructural studies showed slower lipid storage and multilocular adipocytes in grafts from thawed sWAT.
Conclusions:
- Cryopreservation protocols can preserve the regenerative capability of sWAT, but lead to increased reabsorption rates post-grafting.
- While stem potential is maintained, cryopreserved sWAT exhibits inferior graft survival, necessitating protocol improvements.
- Optimizing cryopreservation is essential for the successful clinical application of sWAT in reconstructive and regenerative medicine.
