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Subzero 24-hr Nonfreezing Rat Heart Preservation: A Novel Preservation Method in a Variable Magnetic Field.
MedLine Citation:
PMID:  22885880     Owner:  NLM     Status:  Publisher    
BACKGROUND: A new supercooling system using a variable magnetic field has been recently developed. Subzero nonfreezing preservation has been believed to be a beneficial method because of the lower metabolic rate. The purpose of this study was to evaluate the hemodynamic and metabolic effects of rat heart preservation in a variable magnetic field without cryoprotectants. METHODS: Rat hearts were perfused ex vivo for 120 min after 24-hr preservation in two groups (n=6 each): (1) conventional storage group, in which the hearts were stored at 4°C, and (2) the subzero group, in which the hearts were preserved at -3°C in a variable magnetic field. RESULTS: Reperfusion cardiac performance after preservation was significantly preserved in the subzero group compared with the conventional group with respect to heart rate, coronary flow, the peak positive dP/dt, and the peak negative dP/dt (P<0.05). Edema after reperfusion was significantly decreased (P<0.05), and the adenosine triphosphate level was higher in the subzero group (P<0.05). CONCLUSIONS: The rat hearts preserved in a variable magnetic field at -3°C showed better hemodynamic and metabolic performance than those preserved using conventional storage at 4°C.
Hiroki Kato; Shigeyuki Tomita; Shoujiro Yamaguchi; Hiroshi Ohtake; Go Watanabe
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-8-9
Journal Detail:
Title:  Transplantation     Volume:  -     ISSN:  1534-6080     ISO Abbreviation:  Transplantation     Publication Date:  2012 Aug 
Date Detail:
Created Date:  2012-8-13     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0132144     Medline TA:  Transplantation     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Department of General and Cardiothoracic Surgery, Kanazawa University, Kanazawa, Ishikawa, Japan. 1 Address correspondence to: Hiroki Kato, M.D., Department of General and Cardiothoracic Surgery, Kanazawa University, 13-1 Takaramachi, Kanazawa, Ishikawa 920-8641, Japan.
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