Cold- and cryopreservation of dog liver and kidney slices

Cryobiology. 1996 Feb;33(1):163-71. doi: 10.1006/cryo.1996.0016.

Abstract

The use of tissue slices in culture could decrease the number of animals used in health-related research and decrease experimental variation. This reduction may come about particularly if the methods of cold- and cryopreserving tissue slices are perfected, and one can conduct sequential in vitro experiments into xenobiotic metabolism, organ-specific toxicity, or organ-specific biochemical processes with tissue slices. With this goal in mind, dog liver and kidney slices were placed in cold storage at 0 degrees C using Viaspan (UW), Euro-Collins (EC), Sacks + prostacyclin (SP), and V-7 (V7) cold-preservation solutions for 10 days. Viability was assessed each day by measuring K+ content and protein synthesis after 4 h of incubation in Waymouth + 10% fetal calf serum (FCS). Dog liver slices can be cold-preserved in V7 for up to 7 days using K+ retention as the viability criterion but only up to 4 days using protein synthesis. Dog kidney slices can be cold-preserved in UW, EC, and V7 for up to 10 days using K+ retention, but only V7 could maintain protein synthesis for 10 days. Cryopreserved dog liver and kidney slices retained 63-68% of control viability after 4 h of incubation in FCS. The cryopreservation regimen included using 10% dimethyl sulfoxide in FCS as the cryoprotectant, a freezing rate of 0.5 degrees C/min for liver slices and 12 degrees C/min for kidney slices, and thawing in 37 degrees C FCS. Continued development of cold- and cryopreserving tissue slices could reduce the numbers of animals used and provide accurate and reproducible data.

Publication types

  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Animals
  • Cold Temperature
  • Cryopreservation / methods*
  • Cryoprotective Agents
  • Dogs
  • Evaluation Studies as Topic
  • In Vitro Techniques
  • Kidney* / metabolism
  • Liver* / metabolism
  • Potassium / metabolism
  • Protein Biosynthesis
  • Solutions
  • Time Factors
  • Tissue Preservation / methods*

Substances

  • Cryoprotective Agents
  • Solutions
  • Potassium