Luther 2023 Am J Physiol Renal Physiol: Difference between revisions
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|title=Luther T, Bรผlow Anderberg S, Persson P, Franzรฉn S, Skorup P, Wernerson A, Hultenby K, Palm F, Schiffer TA, Frithiof R (2023) Renal mitochondrial dysfunction in ovine experimental sepsis associated acute kidney injury. https://doi.org/10.1152/ajprenal.00294.2022 | |title=Luther T, Bรผlow Anderberg S, Persson P, Franzรฉn S, Skorup P, Wernerson A, Hultenby K, Palm F, Schiffer TA, Frithiof R (2023) Renal mitochondrial dysfunction in ovine experimental sepsis associated acute kidney injury. https://doi.org/10.1152/ajprenal.00294.2022 | ||
|info=Am J Physiol Renal Physiol [Epub ahead of print]. [https://pubmed.ncbi.nlm.nih.gov/37102685 PMID: 37102685 Open Access] | |info=Am J Physiol Renal Physiol [Epub ahead of print]. [https://pubmed.ncbi.nlm.nih.gov/37102685 PMID: 37102685 Open Access] | ||
|authors=Luther | |authors=Luther Tomas, Buelow Anderberg Sara, Persson Patrik, Franzen Stephanie, Skorup Paul, Wernerson Annika, Hultenby Kjell, Palm Fredrik, Schiffer Tomas A, Frithiof Robert | ||
|year=2023 | |year=2023 | ||
|journal=Am J Physiol Renal Physiol | |journal=Am J Physiol Renal Physiol | ||
|abstract=Sheep develop sepsis associated acute kidney injury (SA-AKI) during experimental sepsis despite normal to increased renal oxygen delivery ( | |abstract=Sheep develop sepsis associated acute kidney injury (SA-AKI) during experimental sepsis despite normal to increased renal oxygen delivery (DO<sub>2</sub>). A disturbed relation between oxygen consumption (VO<sub>2</sub>) and renal sodium transport have been demonstrated in sheep and in clinical studies of AKI, which could be explained by mitochondrial dysfunction. We investigated the function of isolated renal mitochondria in comparison to renal oxygen handling in an ovine hyperdynamic model of SA-AKI. Anesthetized sheep were randomized to either an infusion of live ''Escherichia Coli'' with resuscitative measures (Sepsis group, n=13) or served as controls (n=8) for 28 hours. Renal VO<sub>2</sub> and sodium transport were repeatedly measured. Live cortical mitochondria were isolated at baseline and end of experiment and assessed ''in vitro'' with high resolution respirometry. Sepsis markedly reduced creatinine clearance and the relation between sodium transport and renal VO<sub>2</sub> was decreased in septic compared with control sheep. Cortical mitochondrial function was altered in septic sheep with reduced Respiratory Control Ratio (RCR) (6.0ยฑ1.5 vs. 8.2ยฑ1.6; p=0.006) and increased Complex II/Complex I-ratio (CII/CI) during State 3 (1.6ยฑ0.2 vs. 1.3ยฑ0.1; p=0.0014) mainly due to decreased Complex I-dependent State 3 respiration (p=0.016). However, no differences in renal mitochondrial efficiency or mitochondrial uncoupling were found. In conclusion, renal mitochondrial dysfunction comprised of a reduction of the RCR and an increased CII/CI-relation in State 3 was demonstrated in an ovine model of SA-AKI. However, the disturbed relation between renal VO<sub>2</sub> and renal sodium transport could not be explained by a change in renal cortical mitochondrial efficiency or uncoupling. | ||
|keywords=Acute kidney injury, Mitochondria, Sepsis | |||
|editor=[[Plangger M]] | |editor=[[Plangger M]] | ||
|mipnetlab=SE Uppsala Liss P | |||
}} | }} | ||
{{Labeling | {{Labeling | ||
|area=Respiration | |area=Respiration | ||
|diseases=Sepsis | |||
|organism=Other mammals | |||
|tissues=Kidney | |||
|preparations=Isolated mitochondria | |||
|couplingstates=LEAK, OXPHOS | |||
|pathways=N, S, NS | |||
|instruments=Oxygraph-2k | |instruments=Oxygraph-2k | ||
|additional=2023-05 | |additional=2023-05 | ||
}} | }} |
Latest revision as of 16:36, 2 May 2023
Luther T, Bรผlow Anderberg S, Persson P, Franzรฉn S, Skorup P, Wernerson A, Hultenby K, Palm F, Schiffer TA, Frithiof R (2023) Renal mitochondrial dysfunction in ovine experimental sepsis associated acute kidney injury. https://doi.org/10.1152/ajprenal.00294.2022 |
ยป Am J Physiol Renal Physiol [Epub ahead of print]. PMID: 37102685 Open Access
Luther Tomas, Buelow Anderberg Sara, Persson Patrik, Franzen Stephanie, Skorup Paul, Wernerson Annika, Hultenby Kjell, Palm Fredrik, Schiffer Tomas A, Frithiof Robert (2023) Am J Physiol Renal Physiol
Abstract: Sheep develop sepsis associated acute kidney injury (SA-AKI) during experimental sepsis despite normal to increased renal oxygen delivery (DO2). A disturbed relation between oxygen consumption (VO2) and renal sodium transport have been demonstrated in sheep and in clinical studies of AKI, which could be explained by mitochondrial dysfunction. We investigated the function of isolated renal mitochondria in comparison to renal oxygen handling in an ovine hyperdynamic model of SA-AKI. Anesthetized sheep were randomized to either an infusion of live Escherichia Coli with resuscitative measures (Sepsis group, n=13) or served as controls (n=8) for 28 hours. Renal VO2 and sodium transport were repeatedly measured. Live cortical mitochondria were isolated at baseline and end of experiment and assessed in vitro with high resolution respirometry. Sepsis markedly reduced creatinine clearance and the relation between sodium transport and renal VO2 was decreased in septic compared with control sheep. Cortical mitochondrial function was altered in septic sheep with reduced Respiratory Control Ratio (RCR) (6.0ยฑ1.5 vs. 8.2ยฑ1.6; p=0.006) and increased Complex II/Complex I-ratio (CII/CI) during State 3 (1.6ยฑ0.2 vs. 1.3ยฑ0.1; p=0.0014) mainly due to decreased Complex I-dependent State 3 respiration (p=0.016). However, no differences in renal mitochondrial efficiency or mitochondrial uncoupling were found. In conclusion, renal mitochondrial dysfunction comprised of a reduction of the RCR and an increased CII/CI-relation in State 3 was demonstrated in an ovine model of SA-AKI. However, the disturbed relation between renal VO2 and renal sodium transport could not be explained by a change in renal cortical mitochondrial efficiency or uncoupling. โข Keywords: Acute kidney injury, Mitochondria, Sepsis โข Bioblast editor: Plangger M โข O2k-Network Lab: SE Uppsala Liss P
Labels: MiParea: Respiration
Pathology: Sepsis
Organism: Other mammals Tissue;cell: Kidney Preparation: Isolated mitochondria
Coupling state: LEAK, OXPHOS
Pathway: N, S, NS
HRR: Oxygraph-2k
2023-05