title: Autologous facial fat transplantation: improved graft maintenance by microbead bioactivation.
abstract: An alternative approach to the management of free fat transplantation resorption was evaluated in a rat facial model. Fat grafts obtained from the inguinal region were transferred to subcutaneous lateral facial sites in 20 animals. The grafts were mixed with either basic fibroblast growth factor (bFGF) alone or dextran beads that had been pretreated with bFGF. The grafts were then compared by weight and histology at 1 and 6 months postoperatively. Although graft weights were nearly comparable at 1 month, substantial differences were seen at 6 months, with the bead-containing grafts exhibiting near complete weight maintenance and better overall graft form. Histologically, the bead-containing grafts had extensive intercellular collagen formation and a heterogeneity of adipocyte cell sizes, particularly after 1 month. These findings suggest that the addition of cell-specific bioactive peptides that affect either the preadipocyte cell line and/or the fibroblastic components of the recipient site improve postoperative fat graft weight maintenance. Delivery of the biochemical agent appears to require a carrier system to exert its effects.
authors.affiliation: Plastic Surgery Section, Indiana University Medical Center, Indianapolis 46202-5200.
authors.forename: B L
authors.initials: BL
authors.lastname: Eppley
authors.forename: R V
authors.initials: RV
authors.lastname: Snyders
authors.forename: T
authors.initials: T
authors.lastname: Winkelmann
authors.forename: J J
authors.initials: JJ
authors.lastname: Delfino
mesh_terms: D000273:Adipose Tissue / Q000473:pathology / Q000637:transplantation*; D000818:Animals; D001284:Atrophy; D002462:Cell Membrane / Q000648:ultrastructure; D003094:Collagen; D003911:Dextrans; D005110:Extracellular Space; D005145:Face / Q000601:surgery*; D016222:Fibroblast Growth Factor 2 / Q000627:therapeutic use; D005347:Fibroblasts / Q000473:pathology; D006085:Graft Survival; D006119:Groin; D008264:Macrophages / Q000473:pathology; D008297:Male; D008406:Masseter Muscle / Q000601:surgery; D008863:Microspheres; D051381:Rats; D011919:Rats, Inbred Strains; D013997:Time Factors
chemical_list: D003911:Dextrans; D016222:Fibroblast Growth Factor 2; D003094:Collagen