Molecular adjuvants can be used to enhance the natural destructive mechanisms of freezing within tissue. This review discusses their use in the growing field of combinatorial or adjuvant enhanced cryosurgery for a variety of disease conditions. Two important motivations for adjuvant use are: (1) increased control of the local disease in the area of freezing (i.e., reduced local recurrence of disease) and (2) reduced complications due to over-freezing into adjacent tissues (i.e., reduced normal functional tissue destruction near the treatment site). This review starts with a brief overview of cryosurgical technology including probes and cryogens and major mechanisms of cellular, vascular injury and possible immunological effects due to freeze-thaw treatment in vivo. The review then focuses on adjuvants to each of these mechanisms that make the tissue more sensitive to freeze-thaw injury. Four broad classes of adjuvants are discussed including: thermophysical agents (eutectic forming salts and amino acids), chemotherapuetics, vascular agents and immunomodulators. The key issues of selection, timing, dose and delivery of these adjuvants are then elaborated. Finally, work with a particularly promising vascular adjuvant, TNF-alpha, that shows the ability to destroy all cancer within a cryosurgical iceball is highlighted.
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July 2009
Technology Review
Adjuvant Approaches to Enhance Cryosurgery
Raghav Goel,
Raghav Goel
Department of Biomedical Engineering,
University of Minnesota
, Minneapolis, MN 55455
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Kyle Anderson,
Kyle Anderson
Medical School Department of Urologic Surgery,
University of Minnesota
, Minneapolis, MN 55455
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Joel Slaton,
Joel Slaton
Medical School Department of Urologic Surgery,
University of Minnesota
, Minneapolis, MN 55455
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Franz Schmidlin,
Franz Schmidlin
Clinic des Grangettes
, Chemin des Grangettes 7, Chêne-Bougeries, Geneva 1224, Switzerland
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Greg Vercellotti,
Greg Vercellotti
Department of Medicine,
University of Minnesota
, Minneapolis, MN 55455
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John Belcher,
John Belcher
Department of Medicine,
University of Minnesota
, Minneapolis, MN 55455
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John C. Bischof
John C. Bischof
Department of Biomedical Engineering, Department of Mechanical Engineering, and Medical School Department of Urologic Surgery,
bischof@umn.edu
University of Minnesota
, Minneapolis, MN 55455
Search for other works by this author on:
Raghav Goel
Department of Biomedical Engineering,
University of Minnesota
, Minneapolis, MN 55455
Kyle Anderson
Medical School Department of Urologic Surgery,
University of Minnesota
, Minneapolis, MN 55455
Joel Slaton
Medical School Department of Urologic Surgery,
University of Minnesota
, Minneapolis, MN 55455
Franz Schmidlin
Clinic des Grangettes
, Chemin des Grangettes 7, Chêne-Bougeries, Geneva 1224, Switzerland
Greg Vercellotti
Department of Medicine,
University of Minnesota
, Minneapolis, MN 55455
John Belcher
Department of Medicine,
University of Minnesota
, Minneapolis, MN 55455
John C. Bischof
Department of Biomedical Engineering, Department of Mechanical Engineering, and Medical School Department of Urologic Surgery,
University of Minnesota
, Minneapolis, MN 55455bischof@umn.edu
J Biomech Eng. Jul 2009, 131(7): 074003 (11 pages)
Published Online: July 28, 2009
Article history
Received:
January 8, 2009
Revised:
May 14, 2009
Published:
July 28, 2009
Citation
Goel, R., Anderson, K., Slaton, J., Schmidlin, F., Vercellotti, G., Belcher, J., and Bischof, J. C. (July 28, 2009). "Adjuvant Approaches to Enhance Cryosurgery." ASME. J Biomech Eng. July 2009; 131(7): 074003. https://doi.org/10.1115/1.3156804
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