Homo sapiens
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA251859 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Ischaemic preconditioning is a method of protecting tissue against ischaemia-reperfusion injury. It is an innate protective mechanism that increases a tissue's tolerance to prolonged ischaemia when it is first subjected to short burst of ischaemia and reperfusion. It is thought to provide this protection by increasing the tissue's tolerance to ischaemia, therby reducing oxidative stress, inflammation and apoptosis in the preconditioned tissue. We used microarrays to investigate the genomic response induced by ischaemic preconditioning in muscle biopsies taken from the operative leg of total knee arthroplasty patients in order to gain insight into the ischaemic preconditioning mechanism. Patients undergoing primary knee arthroplasty were randomised to control and treatment (ischaemic preconditioning) groups. Patients in the treatment group received a preconditioning stimulus immediately prior to surgery. The ischaemic preconditioning stimulus consisted of three five-minute periods of tourniquet insufflation on the lower operative limb, interrupted by five minute periods of reperfusion. All patients had a tourniquet applied to the lower limb after the administration of spinal anaesthesia, as per normal protocol for knee arthroplasty surgery. Muscle biopsies were taken from the quadriceps muscle of the operative knee at the immediate onset of surgery (T0) and at 1 hour into surgery (T1). Total RNA was extracted from biospies of four control and four treatment patients and hybridised to the Affymetrix Human U133 2.0 chip.
2010-04-12 | E-GEOD-21164 | biostudies-arrayexpress
Project description:Remote ischemic preconditioning in on-pump coronary artery bypass graft surgery
| PRJNA140165 | ENA
Project description:Transcriptional profiling of human mesenchymal stem cells comparing normoxic MSCs cells with hypoxic MSCs cells. Hypoxia may inhibit senescence of MSCs during expansion. Goal was to determine the effects of hypoxia on global MSCs gene expression.
2011-02-19 | GSE20463 | GEO
Project description:Ischaemic preconditioning is a method of protecting tissue against ischaemia-reperfusion injury. It is an innate protective mechanism that increases a tissue's tolerance to prolonged ischaemia when it is first subjected to short burst of ischaemia and reperfusion. It is thought to provide this protection by increasing the tissue's tolerance to ischaemia, therby reducing oxidative stress, inflammation and apoptosis in the preconditioned tissue. We used microarrays to investigate the genomic response induced by ischaemic preconditioning in muscle biopsies taken from the operative leg of total knee arthroplasty patients in order to gain insight into the ischaemic preconditioning mechanism.
2010-04-02 | GSE21164 | GEO
Project description:The initial factor in the occurrence, development, and prognosis of cerebral ischemia is vascular dysfunction in the brain, and vascular remodeling of the brain is the key therapeutic target and strategy for ischemic tissue repair. Limb remote ischemic preconditioning exhibits potential pleiotropic protective effects in many brain-related diseases, including stroke.Whether limb remote ischemic preconditioning has other effects such as vascular protective effects and the detailed mechanism by which limb remote ischemic preconditioning improves pathology and angiogenesis in cerebral ischemia remains to be further elucidated. The present study was designed to investigate whether limb remote ischemic preconditioning protects vascular structure and promotes angiogenesis in cerebral ischemic rats.
2024-06-05 | PXD052843 |
Project description:Gene methylation profiling of immortalized human mesenchymal stem cells comparing HPV E6/E7-transfected MSCs cells with human telomerase reverse transcriptase (hTERT)- and HPV E6/E7-transfected MSCs. hTERT may increase gene methylation in MSCs. Goal was to determine the effects of different transfected genes on global gene methylation in MSCs.
2011-08-25 | GSE23936 | GEO
Project description:Ischemic preconditioning is the phenomenon whereby brief periods of sublethal ischemia protect against a subsequent, more prolonged, ischemic insult. In remote ischemic preconditioning (RIPC), ischemia to one organ protects other organs at a distance. We developed mouse models to ask if inhibition of EglN1, which senses oxygen and regulates the HIF transcription factor, could suffice to mediate local and remote ischemic preconditioning. We used microarrays to detail the global expression changes induced when the oxygen sensor EglN1 is genetically deleted from skeletal muscle cells. We also used microarrays to assess the transcriptome alterations that occur in mouse hearts with pharmacologic inhibition of EglN1, using the EglN inhibitor FG-4497. We generated mice with a tamoxifen-inducible model of EglN1 loss using a floxxed EglN1 locus with skeletal muscle-specific CRE recombinase. WT mice and mice with the floxxed EglN1 locus were exposed to tamoxifen. Mouse skeletal muscle was isolated for RNA extraction and hybridization on Affymetrix microarrays. In a related experiment, mice were treated with the EglN inhibitor FG-4497, and RNA from their heart tissue was analyzed by microarray for transcriptome alterations compared to control hearts.
2016-02-11 | E-GEOD-77789 | biostudies-arrayexpress
Project description:Interventions: total intravenous anesthesia:Propofol anesthesia;Sevoflurane posttreatment:Sevoflurane anesthesia;Propofol combined with sevoflurane anesthesia:Propofol combined with sevoflurane anesthesia;RIPC and propofol anesthesia:Remote ischemic preconditioning and propofol anesthesia;RIPC and sevoflurane posttreatment:Remote ischemic preconditioning and sevoflurane anesthesia;RIPC and propofol combined with sevoflurane anesthesia:Remote ischemic preconditioning and propofol combined with sevoflurane anesthesia
Primary outcome(s): blood pressure;heart rate;SPO2%;Blood gas analysis;Central venous pressure;H-FABP;cTnI;TNF-a;IL-8
Study Design: Parallel
| 2703482 | ecrin-mdr-crc
Project description:Transcriptional profiling of human mesenchymal stem cells comparing normoxic MSCs cells with hypoxic MSCs cells. Hypoxia may inhibit senescence of MSCs during expansion. Goal was to determine the effects of hypoxia on global MSCs gene expression. Two-condition experiment, Normoxic MSCs vs. Hypoxic MSCs.
2011-02-19 | E-GEOD-20463 | biostudies-arrayexpress
Project description:We developed microRNA expression profiling data from the dorsal motor nucleus of the vagus (DMV) neurons under homeostasis and following physiological perturbations of remote ischemic preconditioning and cardiac ischemia. Male Sprague-Dawley rats were subjected to remote ischemia preconditioning (rIPC), ligation of the left anterior descending artery (LAD), or rIPC with LAD following two hours later (rIPC 2h/LAD). All samples were collected 24 hours after LAD.
2021-01-29 | GSE154990 | GEO