Use of hypertonic solutions for liver preservation in rats

BACKGROUND: The success of a transplant depends mainly on the viability of the graft, which is currently the main point of difficulty focuses on the triad preservation-rejection-infection. There are several specific components of preservation solutions that could prevent certain tissue damage. From these components, the osmotic factor has been highlighted as a factor in preventing edema and subsequent cell death, suggesting a possible advantage in the use of hypertonic solutions for organ preservation. AIM: To compare different hypertonic solutions as alternative to liver preservation. METHOD: A total of 105 Wistar rats were divided in Standard Group (GP, n=5 rats), to verify the normal range of the study, and five experimental groups of 20 rats each, according to the preservation solution used: Group Eurocollins (GE), Group Saline 0.9% (GF), Group Glucose 50% (GG), Group Mannitol 20% (GM), Group Salty - NaCl 7.5% (GS). All animals in experimental group were also divided into four subgroups according to the time of collection in: 0 h, 2 h, 6 h and 12 h. Was assessed cell viability by the reaction with Methyl Blue Thiazolyl (MTT) and the dosages of lactate and alanine aminotransferase (ALT). RESULTS: Regarding the lactate level, was observed a relative improvement of hypertonic solutions compared to eurocollins, and in 12 h, the GE and GS showed no statistically significant difference (p> 0.05). When assessed cell viability, absorbance at MTT also demonstrated favorable results to the GS, since no statistically significant difference in relation to GE. CONCLUSION: The 7.5% NaCl solution showed promising results for organ preservation, presenting parameters and capability comparable to eurocollins preservation solution.