PMID- 34256043 OWN - NLM STAT- MEDLINE DCOM- 20210913 LR - 20210913 IS - 1879-0631 (Electronic) IS - 0024-3205 (Linking) VI - 283 DP - 2021 Oct 15 TI - Induction of ischemic tolerance by remote perconditioning or postconditioning as neuroprotective strategy for spinal cord motor neurons. PG - 119789 LID - S0024-3205(21)00775-X [pii] LID - 10.1016/j.lfs.2021.119789 [doi] AB - AIMS: The study is focused on the investigation of the mechanisms leading to ischemic tolerance acquisition in the spinal cord neurons via application of non-invasive method of remote conditioning. MATERIAL AND METHODS: We have verified the possibility of neuroprotection of spinal cord in rabbit by using remote perconditioning (PerC) applied during last 12 min of spinal cord ischemia (SC-ischemia) or postconditioning (PostC) applied after 1st (early) or 3rd (late) h of reperfusion. Spinal cord ischemia was induced by occlusion of the aorta below the left renal artery for 20 min. Reperfusion period was 24 or 72 h. Remote conditioning was induced by compression of left forelimb with a tourniquet in 3 cycles of 2 min of ischemia, each followed by 2 min of reperfusion. Damaged neurons were detected by Fluoro Jade B method and the modified Tarlov score was used for functional assessment. KEY FINDINGS: The remote conditioning significantly attenuated degeneration of motor neurons in all remote conditioned groups versus both SC-ischemia groups. We detected significant changes in number of Hsp70 positive motor neurons. At 72time point, in the group with remote late PostC we observed significant increase (p < 0.001) of Hsp70 positive motor neurons versus SC- ischemia group and sham control. There was a trend towards improvement of hindlimbs movement. SIGNIFICANCE: This study showed the effectiveness of remote conditioning as a neuroprotective strategy, evidenced by induction of ischemic tolerance leading to decrease of motor neuron degeneration. CI - Copyright (c) 2021 Elsevier Inc. All rights reserved. FAU - Dankova, Marianna AU - Dankova M AD - Comenius University in Bratislava, Faculty of Medicine, Institute of Histology and Embryology, Sasinkova 4, 811 04 Bratislava, Slovak Republic. FAU - Domorakova, Iveta AU - Domorakova I AD - Pavol Jozef Safarik University, Faculty of Medicine, Department of Histology and Embryology, Srobarova 2, 040 01 Kosice, Slovak Republic. FAU - Fagova, Zuzana AU - Fagova Z AD - Pavol Jozef Safarik University, Faculty of Medicine, Department of Histology and Embryology, Srobarova 2, 040 01 Kosice, Slovak Republic. FAU - Stebnicky, Milan AU - Stebnicky M AD - Pavol Jozef Safarik University, Faculty of Medicine, Department of Histology and Embryology, Srobarova 2, 040 01 Kosice, Slovak Republic; Pavol Jozef Safarik University, Faculty of Medicine, 2nd Department of Surgery and L. Pasteur University Hospital, Rastislavova 43, 040 01 Kosice, Slovak Republic. Electronic address: stebnickymilan@gmail.com. FAU - Mechirova, Eva AU - Mechirova E AD - Pavol Jozef Safarik University, Faculty of Medicine, Department of Histology and Embryology, Srobarova 2, 040 01 Kosice, Slovak Republic. LA - eng PT - Journal Article DEP - 20210710 PL - Netherlands TA - Life Sci JT - Life sciences JID - 0375521 SB - IM MH - Animals MH - *Ischemic Preconditioning MH - Male MH - Motor Neurons/*metabolism/pathology MH - *Neuroprotection MH - Rabbits MH - Spinal Cord/*metabolism/pathology MH - Spinal Cord Ischemia/*metabolism/pathology/*prevention & control OTO - NOTNLM OT - Ischemia OT - Rabbit OT - Remote perconditioning OT - Remote postconditioning OT - Spinal cord EDAT- 2021/07/14 06:00 MHDA- 2021/09/14 06:00 CRDT- 2021/07/13 20:09 PHST- 2020/12/04 00:00 [received] PHST- 2021/06/17 00:00 [revised] PHST- 2021/06/28 00:00 [accepted] PHST- 2021/07/14 06:00 [pubmed] PHST- 2021/09/14 06:00 [medline] PHST- 2021/07/13 20:09 [entrez] AID - S0024-3205(21)00775-X [pii] AID - 10.1016/j.lfs.2021.119789 [doi] PST - ppublish SO - Life Sci. 2021 Oct 15;283:119789. doi: 10.1016/j.lfs.2021.119789. Epub 2021 Jul 10.