Cryopreservation of Rat Precision-cut Liver Slices is Associated with Major Metabolic Stress and Ionic Perturbations
| العنوان: | Cryopreservation of Rat Precision-cut Liver Slices is Associated with Major Metabolic Stress and Ionic Perturbations |
|---|---|
| المؤلفون: | Valérie P. Vanhulle, Jean-Marie Pycke, Geneviève A Martiat, Yves Horsmans, Marie-Françoise Vincent, Roger K. Verbeeck, Nathalie M. Delzenne, Françoise Bontemps |
| المصدر: | Cellular Physiology and Biochemistry. 13:103-112 |
| بيانات النشر: | S. Karger AG, 2003. |
| سنة النشر: | 2003 |
| مصطلحات موضوعية: | Male, Anabolism, Physiology, Sodium, chemistry.chemical_element, Carbohydrate metabolism, Cryopreservation, Time, Andrology, chemistry.chemical_compound, Oxygen Consumption, Stress, Physiological, Freezing, Animals, Glycolysis, Rats, Wistar, Incubation, Ions, ATP synthase, biology, Glycogen, Caspase 3, Lipid Metabolism, Mitochondria, Rats, Proton-Translocating ATPases, Glucose, Liver, chemistry, Biochemistry, Caspases, biology.protein |
| الوصف: | BACKGROUND/AIMS: Cryopreserved precision-cut liver slices (PCLS) in culture exhibit a rapid decline in ATP level and anabolic processes by unknown mechanisms. The aim of this study is to elucidate the key events explaining the alterations occurring in cryopreserved PCLS. METHODS: Glucose metabolism, mitochondrial activities, ionic homeostasis and caspase-3 activity were assessed in fresh or cryopreserved (rapid freezing-thawing conditions) rat PCLS within the first hour of incubation in Williams' medium E at 37 degrees C. RESULTS: Despite a similar glycolytic activity under both conditions, only fresh PCLS were able to gradually recover their ATP and potassium content. Glycogen content dropped more rapidly in cryopreserved than in control PCLS. Only cryopreserved PCLS exhibited a decline in O2 consumption and a lower ATP/ADP ratio from 30 min of incubation with a loss of coupling of oxygen consumption to ATP synthesis and mitochondrial calcium transport after 1 hour of incubation. Caspase-3 activation was already present in cryopreserved PCLS after a few minutes of incubation. CONCLUSIONS: The lack of restoration of potassium/sodium exchange might be a primary event in the metabolic alterations occurring in cryopreserved PCLS after thawing, that contributes to further mitochondrial alterations, caspase activation and compromises ATP-dependent anabolic pathways. |
| تدمد: | 1421-9778 1015-8987 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2ec2e2cfd10fb781cb33696bd5c690adTest https://doi.org/10.1159/000070254Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....2ec2e2cfd10fb781cb33696bd5c690ad |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14219778 10158987 |
|---|