Doerrier 2014 Life Sci: Difference between revisions
No edit summary |
No edit summary |
||
Line 1: | Line 1: | ||
{{Publication | {{Publication | ||
|title=Doerrier C, García JA, Volt H, Díaz-Casado ME, Lima-Cabello E, Ortiz F, Luna-Sánchez M, Escames G, López LC, Acuña-Castroviejo D | |title=Doerrier C, García JA, Volt H, Díaz-Casado ME, Lima-Cabello E, Ortiz F, Luna-Sánchez M, Escames G, López LC, Acuña-Castroviejo D (2015) Identification of mitochondrial deficits and melatonin targets in liver of septic mice by high-resolution respirometry. Life Sci 121:158-65. | ||
|info=[http://www.ncbi.nlm.nih.gov/pubmed/25498899 PMID: 25498899] | |info=[http://www.ncbi.nlm.nih.gov/pubmed/25498899 PMID: 25498899] | ||
|authors=Doerrier C, García JA, Volt H, Díaz-Casado ME, Lima-Cabello E, Ortiz F, Luna-Sánchez M, Escames G, López LC, Acuña-Castroviejo D | |authors=Doerrier C, García JA, Volt H, Díaz-Casado ME, Lima-Cabello E, Ortiz F, Luna-Sánchez M, Escames G, López LC, Acuña-Castroviejo D |
Revision as of 13:40, 15 January 2015
Doerrier C, García JA, Volt H, Díaz-Casado ME, Lima-Cabello E, Ortiz F, Luna-Sánchez M, Escames G, López LC, Acuña-Castroviejo D (2015) Identification of mitochondrial deficits and melatonin targets in liver of septic mice by high-resolution respirometry. Life Sci 121:158-65. |
Doerrier C, García JA, Volt H, Díaz-Casado ME, Lima-Cabello E, Ortiz F, Luna-Sánchez M, Escames G, López LC, Acuña-Castroviejo D (2015) Life Sci
Abstract: Aims. Previous data showed that melatonin maintains liver mitochondrial homeostasis during sepsis, but neither the mechanisms underlying mitochondrial dysfunction nor the target of melatonin are known.
Main methods. Here, we analyzed mitochondrial respiration in isolated mouse liver mitochondria with different substrate combinations (glutamate/malate, glutamate/malate/sucinate or succinate/rotenone) to identify mitochondrial defects and melatonin targets during sepsis. Other bioenergetic parameters including a + a3, b, and c + c1 content, mitochondrial mass, and mitochondrial supercomplexes formation were analyzed. Mitochondrial function was assessed during experimental sepsis induced by cecal ligation and puncture (CLP) in livers of 3 mo. C57BL/6 mice at early and late phases of sepsis, i.e., at 8 and 24 h after sepsis induction.
Key findings. Septic mice showed mitochondrial injury with a decrease in state 3, respiratory control rate, mitochondrial mass, and cytochrome b and c + c1 content, which was prevented by melatonin treatment. Mitochondrial dysfunction in sepsis was mainly linked to complex I damage, because complex II was far less impaired. These mitochondria preserved the respiratory supramolecular organization, maintaining their electron transport system capacity.
Significance. This work strengthens the use of substrate combinations to identify specific respiratory defects and selective melatonin actions in septic mitochondria. Targeting mitochondrial complex I should be a main therapeutical approach in the treatment of sepsis, whereas the use of melatonin should be considered in the therapy of clinical sepsis. • Keywords: Liver, Sepsis, Oxidative stress, Melatonin, Mitochondria, Respirometry, Bioenergetics
• O2k-Network Lab: ES Granada Acuna Castroviejo D
Labels: MiParea: Respiration, mt-Biogenesis;mt-density, mt-Medicine, Pharmacology;toxicology
Pathology: Sepsis
Organism: Mouse Tissue;cell: Liver Preparation: Homogenate, Isolated Mitochondria"Isolated Mitochondria" is not in the list (Intact organism, Intact organ, Permeabilized cells, Permeabilized tissue, Homogenate, Isolated mitochondria, SMP, Chloroplasts, Enzyme, Oxidase;biochemical oxidation, ...) of allowed values for the "Preparation" property. Enzyme: Supercomplex
Coupling state: LEAK, OXPHOS, ETS"ETS" is not in the list (LEAK, ROUTINE, OXPHOS, ET) of allowed values for the "Coupling states" property.
HRR: Oxygraph-2k