Test - Ecosystem agenda: Difference between revisions

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{{Publication
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|title=Stadlmann S, Renner K, Pollheimer J, Moser PL, Zeimet AG, Offner FA, Gnaiger E (2006) Preserved coupling of oxidative phosphorylation but decreased mitochondrial respiratory capacity in IL-1ß treated human peritoneal mesothelial cells. Cell Biochem Biophys 44:179-86.
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|info=[http://www.ncbi.nlm.nih.gov/pubmed/16456220 PMID: 16456220], [[File:PDF.jpg|100px|link=http://www.bioblast.at/images/c/cb/Stadlmann_2006_Cell_Biochem_Biophys.pdf |Bioblast pdf]]
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|authors=Stadlmann S, Renner K, Pollheimer J, Moser PL, Zeimet AG, Offner FA, Gnaiger E
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|year=2006
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|journal=Cell Biochem Biophys
 
|abstract=The peritoneal mesothelium acts as a regulator of serosal responses to injury, infection, and neoplastic diseases. After inflammation of the serosal surfaces, proinflammatory cytokines induce an “activated” mesothelial cell phenotype, the mitochondrial aspect of which has not previously been studied. After incubation of cultured human peritoneal mesothelial cells with interleukin (IL)-1β for 48 h, respiratory activity of suspended cells was analyzed by high-resolution respirometry. Citrate synthase (CS) and lactate dehydrogenase (LDH) activities were determined by spectrophotometry. Treatment with IL-1β resulted in a significant decline of respiratory capacity (''p'' < 0.05). Respiratory control ratios (i.e., uncoupled respiration at optimum carbonyl cyanide p-trifluoromethoxyphenylhydrazone concentration divided by oligomycin inhibited respiration measured in unpermeabilized cells) remained as high as 11, indicating well-coupled mitochondria and functional integrity of the inner mitochondrial membrane. Whereas respiratory capacities of the cells declined in proportion with decreased CS activity (''p'' < 0.05), LDH activity increased (''p'' < 0.05). Taken together, these results indicate that IL-1β exposure of peritoneal mesothelial cells does not lead to irreversible defects or inhibition of specific components of the respiratory chain, but is associated with a decrease of mitochondrial content of the cells that is correlated with an increase in LDH (and thus glycolytic) capacity.
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|keywords=Peritoneal mesothelial cells, Interleukin-1β, Mitochondria, Respiration, Citrate synthase, Lactate dehydrogenase, Cell viability
{| style="width: 100%; text-align: center"
|mipnetlab=AT Innsbruck Gnaiger E, DE Regensburg Renner-Sattler K
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Latest revision as of 12:22, 22 December 2022

               




             

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