PMID- 24871532 OWN - NLM STAT- MEDLINE DCOM- 20150423 LR - 20151119 IS - 1569-9285 (Electronic) IS - 1569-9285 (Linking) VI - 19 IP - 3 DP - 2014 Sep TI - Effects of human adipose-derived stem cells on the regeneration of damaged visceral pleural mesothelial cells: a morphological study in a rabbit model. PG - 363-7 LID - 10.1093/icvts/ivu124 [doi] AB - OBJECTIVES: Although an alveolar air leak (AAL) after pulmonary resection is a troublesome complication that diminishes a patient's quality of life and increases medical costs, current treatment and preventive methods for AAL are not effective. Therefore, we transplanted adipose-derived stem cells (ASCs) to the damaged visceral pleura to facilitate the regeneration of mesothelial cells and investigated the possibility of cell therapy as a treatment option for AAL. METHODS: Stem cells were isolated and cultured from discarded fat tissues that were collected after liposuction procedures. Flow cytometry analysis was performed to evaluate their suitability as mesenchymal stem cells. Cultured stem cells were seeded onto polyglycolic acid (PGA) sheets and incubated for 5 days. Under general anaesthesia, 10 New Zealand rabbits underwent thoracotomies. After the visceral pleura was damaged, PGA sheets containing ASCs were transplanted into 5 rabbits (ASC group) and PGA sheets without cells were transplanted into the other 5 rabbits (control group). Rethoracotomies were performed after 4 weeks, and the transplanted areas in the visceral pleura were excised for analysis. Haematoxylin and eosin and Azan staining were performed. In addition, electron microscopic examinations were performed to investigate the ultrastructure of the regenerating mesothelium. RESULTS: Cultured stem cells were positive for the surface proteins CD13, CD29, CD49d, CD90 and CD105, whereas they were negative for CD34, CD45 and human leukocyte antigen (HLA)-DR. The adhesions between the transplanted visceral pleura and parietal pleura were weaker in the ASC group than in the control group. On histological examination, the mesothelial cell monolayer of the visceral pleura was well preserved in the ASC group, whereas it was frequently lost in the control group. Electron microscopy demonstrated that the mesothelial cell monolayer and its abundant microvilli were well preserved in the ASC group, but were absent or disintegrated in the control group. CONCLUSIONS: Transplantation of ASCs to the damaged visceral pleura can contribute to the treatment and prevention of AAL by improving the regeneration of mesothelial cells. CI - (c) The Author 2014. Published by Oxford University Press on behalf of the European Association for Cardio-Thoracic Surgery. All rights reserved. FAU - Kim, Young-Du AU - Kim YD AD - Department of Thoracic and Cardiovascular Surgery, College of Medicine, The Catholic University of Korea, Seoul, Korea. FAU - Jun, Young Joon AU - Jun YJ AD - Department of Plastic and Reconstruction Surgery, College of Medicine, The Catholic University of Korea, Seoul, Korea. FAU - Kim, Jeana AU - Kim J AD - Department of Pathology, College of Medicine, The Catholic University of Korea, Seoul, Korea. FAU - Kim, Chi Kyung AU - Kim CK AD - Department of Thoracic and Cardiovascular Surgery, College of Medicine, The Catholic University of Korea, Seoul, Korea kckmd@hanmail.net. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140528 PL - England TA - Interact Cardiovasc Thorac Surg JT - Interactive cardiovascular and thoracic surgery JID - 101158399 RN - 0 (Biomarkers) RN - 26009-03-0 (Polyglycolic Acid) SB - IM CIN - Interact Cardiovasc Thorac Surg. 2014 Sep;19(3):367. PMID: 25125567 MH - Animals MH - Biomarkers/metabolism MH - Cell Communication MH - Cell Culture Techniques MH - *Cell Proliferation MH - Cell Shape MH - Cells, Cultured MH - Disease Models, Animal MH - Epithelial Cells/metabolism/*pathology MH - Humans MH - Pleura/injuries/metabolism/pathology/*surgery MH - Pneumonectomy MH - Polyglycolic Acid MH - Rabbits MH - *Regeneration MH - *Stem Cell Transplantation MH - Stem Cells/metabolism/*physiology MH - Subcutaneous Fat, Abdominal/*cytology MH - Time Factors MH - Tissue Scaffolds OTO - NOTNLM OT - Adipose-derived stem cell OT - Alveolar air leak OT - Mesothelial cell EDAT- 2014/05/30 06:00 MHDA- 2015/04/24 06:00 CRDT- 2014/05/30 06:00 PHST- 2014/05/30 06:00 [entrez] PHST- 2014/05/30 06:00 [pubmed] PHST- 2015/04/24 06:00 [medline] AID - ivu124 [pii] AID - 10.1093/icvts/ivu124 [doi] PST - ppublish SO - Interact Cardiovasc Thorac Surg. 2014 Sep;19(3):363-7. doi: 10.1093/icvts/ivu124. Epub 2014 May 28.