Delayed remote ischemic postconditioning protects against transient cerebral ischemia/reperfusion as well as kainate-induced injury in rats. 2014

Rastislav Burda, and Viera Danielisova, and Miroslav Gottlieb, and Miroslava Nemethova, and Petra Bonova, and Milina Matiasova, and Radoslav Morochovic, and Jozef Burda
University Hospital of L. Pasteur, Kosice, Slovakia.

To test the appropriateness of using delayed remote ischemic postconditioning against damage caused to the hippocampus by ischemia or apoptosis inducing intoxication, we chose 10-min normothermic ischemia induced by four-vessel occlusion or kainate injection (8 mg/kg i.p.) in rats. Ischemia alone caused the number of degenerated CA1 neurons after 7 days lasting reperfusion to be significantly (p<0.001) increased by 72.77%. Delayed remote ischemic postconditioning lasting 20 min was able to prevent massive increase in the neurodegeneration. The group with 10 min of ischemia and postconditioning after 2 days of reperfusion had only 15.87% increase in the number of apoptotic neurons. Seven days after kainic acid injection the number of surviving neurons was 42.8% (p<0.001), but the portion of surviving pyramidal cells in the postconditioning group is more than 98%. Our data show that remote postconditioning, performed with 20 min of tourniquet ischemia applied to the hind limb, is a simple method able to effectively stop the onset of neurodegeneration and prevent occurrence of massive muscle cell necrosis, even when used 2 days after the end of the adverse event. Surviving neurons retained a substantial part of their learning and memory ability.

UI MeSH Term Description Entries
D007608 Kainic Acid (2S-(2 alpha,3 beta,4 beta))-2-Carboxy-4-(1-methylethenyl)-3-pyrrolidineacetic acid. Ascaricide obtained from the red alga Digenea simplex. It is a potent excitatory amino acid agonist at some types of excitatory amino acid receptors and has been used to discriminate among receptor types. Like many excitatory amino acid agonists it can cause neurotoxicity and has been used experimentally for that purpose. Digenic Acid,Kainate,Acid, Digenic,Acid, Kainic
D008297 Male Males
D008569 Memory Disorders Disturbances in registering an impression, in the retention of an acquired impression, or in the recall of an impression. Memory impairments are associated with DEMENTIA; CRANIOCEREBRAL TRAUMA; ENCEPHALITIS; ALCOHOLISM (see also ALCOHOL AMNESTIC DISORDER); SCHIZOPHRENIA; and other conditions. Memory Loss,Age-Related Memory Disorders,Memory Deficits,Memory Disorder, Semantic,Memory Disorder, Spatial,Memory Disorders, Age-Related,Retention Disorders, Cognitive,Semantic Memory Disorder,Spatial Memory Disorder,Age Related Memory Disorders,Age-Related Memory Disorder,Cognitive Retention Disorder,Cognitive Retention Disorders,Deficit, Memory,Deficits, Memory,Memory Deficit,Memory Disorder,Memory Disorder, Age-Related,Memory Disorders, Age Related,Memory Disorders, Semantic,Memory Disorders, Spatial,Memory Losses,Retention Disorder, Cognitive,Semantic Memory Disorders,Spatial Memory Disorders
D002545 Brain Ischemia Localized reduction of blood flow to brain tissue due to arterial obstruction or systemic hypoperfusion. This frequently occurs in conjunction with brain hypoxia (HYPOXIA, BRAIN). Prolonged ischemia is associated with BRAIN INFARCTION. Cerebral Ischemia,Ischemic Encephalopathy,Encephalopathy, Ischemic,Ischemia, Cerebral,Brain Ischemias,Cerebral Ischemias,Ischemia, Brain,Ischemias, Cerebral,Ischemic Encephalopathies
D005260 Female Females
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D015427 Reperfusion Injury Adverse functional, metabolic, or structural changes in tissues that result from the restoration of blood flow to the tissue (REPERFUSION) following ISCHEMIA. Ischemia-Reperfusion Injury,Injury, Ischemia-Reperfusion,Injury, Reperfusion,Reperfusion Damage,Damage, Reperfusion,Injury, Ischemia Reperfusion,Ischemia Reperfusion Injury,Ischemia-Reperfusion Injuries,Reperfusion Damages,Reperfusion Injuries
D017208 Rats, Wistar A strain of albino rat developed at the Wistar Institute that has spread widely at other institutions. This has markedly diluted the original strain. Wistar Rat,Rat, Wistar,Wistar Rats
D056547 CA1 Region, Hippocampal One of four subsections of the hippocampus described by Lorente de No, located furthest from the DENTATE GYRUS. CA1 Field of Hippocampus,CA1 Pyramidal Cell Area,CA1 Pyramidal Cell Layer,CA1 Stratum Pyramidale,CA1 Stratum Radiatum,Cornu Ammonis 1 Area,Hippocampal Sector CA1,Hippocampus CA1 Field,Regio Superior of Hippocampus,Stratum Radiatum, CA1,CA1 Field, Hippocampus,CA1 Stratum Radiatums,CA1, Hippocampal Sector,Field, Hippocampus CA1,Hippocampal CA1 Region,Hippocampus Regio Superior,Radiatum, CA1 Stratum,Radiatums, CA1 Stratum,Region, Hippocampal CA1,Sector CA1, Hippocampal,Stratum Pyramidale, CA1,Stratum Radiatums, CA1
D057775 Ischemic Postconditioning The application of repeated, brief periods of vascular occlusion at the onset of REPERFUSION to reduce REPERFUSION INJURY that follows a prolonged ischemic event. The techniques are similar to ISCHEMIC PRECONDITIONING but the time of application is after the ischemic event instead of before. Ischemic Post-Conditioning,Ischemic Post Conditioning,Post-Conditioning, Ischemic,Postconditioning, Ischemic

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