PMID- 37834219 OWN - NLM STAT- MEDLINE DCOM- 20231101 LR - 20231101 IS - 1422-0067 (Electronic) IS - 1422-0067 (Linking) VI - 24 IP - 19 DP - 2023 Sep 30 TI - Mitoquinone Alleviates Donation after Cardiac Death Kidney Injury during Hypothermic Machine Perfusion in Rat Model. LID - 10.3390/ijms241914772 [doi] LID - 14772 AB - Transplanted organs are subjected to harmful conditions through stopping blood flow, hypothermic storage of the graft, and subsequent reperfusion. In particular, kidneys donated from patients after cardiac arrest (DCD) are classified as more vulnerable to ischemia-reperfusion injury (IRI). Hypothermic machine perfusion is proposed as a solution for better kidney storage before transplantation, and it is a good platform for additional graft treatment. Antioxidants have gained interest in regenerative medicine due to their ability to scavenge reactive oxygen species (ROS), which play a key role in IRI. We evaluated the effect of Mitoquinone (MitoQ), a strong mitochondria-targeted antioxidant, administered directly to the perfusing buffer. Rat kidneys were isolated, randomly classified into one of the following groups, donation after brainstem death (DBD), DCD, and DCD with MitoQ, and perfused for 22 hours with a hypothermic machine perfusion system. Subsequently, we detected levels of kidney injury (KIM-1) and oxidative stress (ROS/RNS, cytochrome C oxidase, and mitochondrial integrity) markers. We compared the activation of the apoptosis pathway (caspase 3 and 9), the concentration of phosphorylated Akt (pAkt), and the pAkt/total Akt ratio. MitoQ reduces KIM-1 concentration, total ROS/RNS, and the level of caspases. We observed a decrease in pAkt and the pAkt/total Akt ratio after drug administration. The length of warm ischemia time negatively impacts the graft condition. However, MitoQ added to the perfusing system as an 'on pump' therapy mitigates injury to the kidney before transplantation by inhibiting apoptosis and reducing ROS/RNS levels. We propose MitoQ as a potential drug for DCD graft preconditioning. FAU - Radajewska, Anna AU - Radajewska A AD - Division of Clinical Chemistry and Laboratory Hematology, Department of Medical Laboratory Diagnostics, Faculty of Pharmacy, Wroclaw Medical University, Borowska 211A, 50-556 Wroclaw, Poland. FAU - Szyller, Jakub AU - Szyller J AD - Division of Clinical Chemistry and Laboratory Hematology, Department of Medical Laboratory Diagnostics, Faculty of Pharmacy, Wroclaw Medical University, Borowska 211A, 50-556 Wroclaw, Poland. FAU - Krzywonos-Zawadzka, Anna AU - Krzywonos-Zawadzka A AUID- ORCID: 0000-0003-3534-7306 AD - Division of Clinical Chemistry and Laboratory Hematology, Department of Medical Laboratory Diagnostics, Faculty of Pharmacy, Wroclaw Medical University, Borowska 211A, 50-556 Wroclaw, Poland. FAU - Olejnik, Agnieszka AU - Olejnik A AUID- ORCID: 0000-0001-5130-7609 AD - Division of Clinical Chemistry and Laboratory Hematology, Department of Medical Laboratory Diagnostics, Faculty of Pharmacy, Wroclaw Medical University, Borowska 211A, 50-556 Wroclaw, Poland. FAU - Sawicki, Grzegorz AU - Sawicki G AD - Division of Clinical Chemistry and Laboratory Hematology, Department of Medical Laboratory Diagnostics, Faculty of Pharmacy, Wroclaw Medical University, Borowska 211A, 50-556 Wroclaw, Poland. AD - Department of Anatomy, Physiology and Pharmacology, College of Medicine, University of Saskatchewan, Saskatoon, SK S7N 5E5, Canada. FAU - Bil-Lula, Iwona AU - Bil-Lula I AUID- ORCID: 0000-0002-2769-0166 AD - Division of Clinical Chemistry and Laboratory Hematology, Department of Medical Laboratory Diagnostics, Faculty of Pharmacy, Wroclaw Medical University, Borowska 211A, 50-556 Wroclaw, Poland. LA - eng GR - 2017/27/B/NZ4/00601/National Science Centre, Poland/ PT - Journal Article DEP - 20230930 PL - Switzerland TA - Int J Mol Sci JT - International journal of molecular sciences JID - 101092791 RN - 47BYS17IY0 (mitoquinone) RN - 0 (Reactive Oxygen Species) RN - EC 2.7.11.1 (Proto-Oncogene Proteins c-akt) RN - 0 (Antioxidants) SB - IM MH - Humans MH - Rats MH - Animals MH - Reactive Oxygen Species MH - *Organ Preservation MH - Proto-Oncogene Proteins c-akt MH - Kidney/metabolism MH - Perfusion MH - *Reperfusion Injury/metabolism MH - Antioxidants MH - Death PMC - PMC10572969 OTO - NOTNLM OT - MitoQ OT - hypothermic machine perfusion OT - ischemia-reperfusion injury OT - kidney graft OT - oxidative stress COIS- The authors declare no conflict of interest. EDAT- 2023/10/14 10:44 MHDA- 2023/11/01 12:42 PMCR- 2023/09/30 CRDT- 2023/10/14 01:03 PHST- 2023/08/22 00:00 [received] PHST- 2023/09/27 00:00 [revised] PHST- 2023/09/28 00:00 [accepted] PHST- 2023/11/01 12:42 [medline] PHST- 2023/10/14 10:44 [pubmed] PHST- 2023/10/14 01:03 [entrez] PHST- 2023/09/30 00:00 [pmc-release] AID - ijms241914772 [pii] AID - ijms-24-14772 [pii] AID - 10.3390/ijms241914772 [doi] PST - epublish SO - Int J Mol Sci. 2023 Sep 30;24(19):14772. doi: 10.3390/ijms241914772.