title: [Leptin as a survival enhanced-factor in grainy fat transplantation].
abstract: OBJECTIVE
  This experiment is to test the survival enhance effect of leptin in grainy fat transplantation.
  
  
  METHODS
  The 0.6 g grainy fat was obtained from the Wistar mouse subcutaneous tissue in the abdomen. It was then mixed with 0.9% NS and 20 ng/ml leptin and transplanted in the head subcutaneously. The transplanted tissue was taken out after 10, 20 and 40 days. After being weighed, the tissue was dyed with HE staining and VEGF staining. The data was analyzed with SPSS software.
  
  
  RESULTS
  The fibrous membrane around the tissue in leptin group was thin and there was less fat cell necrosis, compared with the control group. The remained-weight rate was 108.3%, 83.3% and 66.3% in 10, 20 and 40 days after the surgery. The differences were statistic significant between the leptin groups and the control (P < 0.05). The examinations of the HE and VEGF stain showed that there was the rich vascularization in leptin treated tissue.
  
  
  CONCLUSIONS
  Leptin could enhance the survival of the transplanted grainy fat due to its angiogenesis effect.
authors.affiliation: Plastic Surgery Department of Peking Union Hospital, Chinese Academy of Medical Sciences, Beijing 100730, China.
authors.forename: You-bin
authors.initials: YB
authors.lastname: Wang
authors.forename: Ke-ming
authors.initials: KM
authors.lastname: Qi
authors.forename: Min
authors.initials: M
authors.lastname: Zhao
authors.forename: Qiang
authors.initials: Q
authors.lastname: Zhuang
mesh_terms: D000273:Adipose Tissue / Q000637:transplantation*; D000818:Animals; D005260:Female; D006801:Humans; D020738:Leptin / Q000494:pharmacology*; D008297:Male; D023421:Models, Animal; D018919:Neovascularization, Physiologic / Q000187:drug effects; D051381:Rats; D017208:Rats, Wistar; D016019:Survival Analysis; D013997:Time Factors; D014184:Transplantation, Homologous; D042461:Vascular Endothelial Growth Factor A / Q000378:metabolism
chemical_list: D020738:Leptin; D042461:Vascular Endothelial Growth Factor A