Nicardipine reverses vasoactivity associated with university of Wisconsin solution in the rat peripheral circulation

Y. Raveh, David Lubarsky, Ernesto Pretto, Kenneth G Proctor

Research output: Contribution to journalArticle

Abstract

Background: The rapid uniform delivery of University of Wisconsin solution (UW) to the microcirculation may be compromised by its vasoactivity. Methods: In 2 different rodent models, we tested whether UW-mediated vasoconstriction could be reversed with nicardipine. Results: In the perfused, splanchnic circulation, intravascular control solutions (lactated Ringers [LR], Hextend [HEX], histidine-tryptophan-ketoglutarate [HTK]) or UW (± nicardipine) evoked pressure changes in 3 protocols (series 1; n = 35). In the cremaster muscle, topical control solutions or UW (± nicardipine) evoked vascular responses measured by video microscopy in 4 protocols (series 2; n = 47). In series 1A, 37°C UW increased perfusion pressure, but there was no change caused by LR, HEX, or HTK. In series 1B, 4°C UW caused a similar, albeit transient, increase. In series 1C, nicardipine reversed 37°C UW-mediated vasoconstriction in a dose-related manner. In series 2A, UW caused a 30%59% constriction that varied with arteriolar branching order. In series 2B, the recovery from UW-induced vasoconstriction varied with duration of exposure, but nicardipine fully reversed residual vasoconstriction. In series 2C, cold and warm UW were equipotent, near maximal, vasoconstrictors. In series 2D, UW potentiated no-reflow. Conclusion: UW causes a potent temperature-independent vasoconstriction by a calcium-mediated mechanism and this effect can be mitigated with nicardipine.

Original languageEnglish
Pages (from-to)2540-2549
Number of pages10
JournalTransplantation Proceedings
Volume43
Issue number7
DOIs
StatePublished - Sep 1 2011

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Nicardipine
Vasoconstriction
Histidine
Tryptophan
Splanchnic Circulation
Pressure
Abdominal Muscles
Video Microscopy
Vasoconstrictor Agents
Microcirculation
Constriction

ASJC Scopus subject areas

  • Surgery
  • Transplantation

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Nicardipine reverses vasoactivity associated with university of Wisconsin solution in the rat peripheral circulation. / Raveh, Y.; Lubarsky, David; Pretto, Ernesto; Proctor, Kenneth G.

In: Transplantation Proceedings, Vol. 43, No. 7, 01.09.2011, p. 2540-2549.

Research output: Contribution to journalArticle

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abstract = "Background: The rapid uniform delivery of University of Wisconsin solution (UW) to the microcirculation may be compromised by its vasoactivity. Methods: In 2 different rodent models, we tested whether UW-mediated vasoconstriction could be reversed with nicardipine. Results: In the perfused, splanchnic circulation, intravascular control solutions (lactated Ringers [LR], Hextend [HEX], histidine-tryptophan-ketoglutarate [HTK]) or UW (± nicardipine) evoked pressure changes in 3 protocols (series 1; n = 35). In the cremaster muscle, topical control solutions or UW (± nicardipine) evoked vascular responses measured by video microscopy in 4 protocols (series 2; n = 47). In series 1A, 37°C UW increased perfusion pressure, but there was no change caused by LR, HEX, or HTK. In series 1B, 4°C UW caused a similar, albeit transient, increase. In series 1C, nicardipine reversed 37°C UW-mediated vasoconstriction in a dose-related manner. In series 2A, UW caused a 30{\%}59{\%} constriction that varied with arteriolar branching order. In series 2B, the recovery from UW-induced vasoconstriction varied with duration of exposure, but nicardipine fully reversed residual vasoconstriction. In series 2C, cold and warm UW were equipotent, near maximal, vasoconstrictors. In series 2D, UW potentiated no-reflow. Conclusion: UW causes a potent temperature-independent vasoconstriction by a calcium-mediated mechanism and this effect can be mitigated with nicardipine.",
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