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Träfflista för sökning "WFRF:(Grip Lars) srt2:(2005-2009)"

Sökning: WFRF:(Grip Lars) > (2005-2009)

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  • Åström-Olsson, Karin, 1959, et al. (författare)
  • Myocardial release of FKBP12 and increased production of FKBP12.6 in ischemia and reperfusion experimental models
  • 2009
  • Ingår i: Biochem Biophys Res Commun. - : Elsevier BV. - 1090-2104 .- 0006-291X. ; 390:4, s. 1299-304
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND: Coronary artery occlusion and reperfusion may trigger reversible and irreversible ischemic and reperfusion injury. The primary aim of this study was to evaluate protein release into the myocardium in a porcine model during ischemia and reperfusion to search for clarifying models for reperfusion injury and secondarily to investigate release and production of the immunophilins FKBP12/12.6 in this model and in cell cultures. METHODS: In a porcine model local myocardial ischemia was induced during 45min followed by 120min of reperfusion. Microdialysis samples from ischemic and non-ischemic areas were analyzed with surface-enhanced laser desorption ionization (SELDI) mass spectrometry (MS) and Western blotting (WB). Myocardial biopsies from areas at risk and control areas were analyzed with reverse transcription polymerase chain reaction (RT-PCR). Myocardial cell cultures from mice (HL-1 cells) were exposed to hypoxia and then analyzed with WB and RT-PCR. RESULTS: FK binding protein12 (FKBP12), ubiquitin and myoglobin were identified as being released during ischemia and reperfusion in microdialysates. RT-PCR analysis on the biopsies after ischemia revealed a non-significant increase in mRNA expression of FKBP12 and a significant increase in mRNA expression of FKBP12.6. Lysates from HL-1 cells exposed to hypoxia demonstrated increase of FKBP12 and a significant increase in mRNA expression of FKBP12.6. CONCLUSION: In a myocardial ischemic-reperfusion porcine model as well as in hypoxic HL-1 cells, release of FKBP12 and increased production of FKBP12.6 was demonstrated. The findings indicate important mechanisms related to these immunophilins in the reaction to ischemia/hypoxia and reperfusion in the heart.
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  • Aasa, M., et al. (författare)
  • Temporal changes in TIMI myocardial perfusion grade in relation to epicardial flow, ST-resolution and left ventricular function after primary percutaneous coronary intervention
  • 2007
  • Ingår i: Coron Artery Dis. - 0954-6928. ; 18:7, s. 513-518
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND: Myocardial perfusion at the end of reperfusion therapy assessed angiographically with thrombolysis in myocardial infarction (TIMI) myocardial perfusion grade (TMPG) has been associated with recovery of left ventricular (LV) function and survival. The aim of this analysis was to study the evolution of TMPG within the first week following primary percutaneous coronary intervention (PCI) and its association with ECG-derived ST-segment resolution (STRES) and recovery of LV function. METHODS: A total of 76 patients with acute myocardial infarction were pretreated with enoxaparine and abciximab and subjected to primary PCI within a prospective study and evaluated with TMPG assessed on coronary angiography at the end of the procedure and after 5-7 days. STRES was evaluated at 120 min post inclusion and global LV function was assessed by echocardiography after 30 days. RESULTS: Reperfusion (TIMI flow 2-3) was reached in all patients. Forty one percent had 'open myocardium' (i.e. TMPG 2 or 3) after PCI, a number that increased to 61% after 5-7 days (P=0.003). STRES >50% was reached in 73% of the patients and there was a good correlation between TMPG and STRES. Furthermore, those who improved from 'closed' to 'open myocardium' had higher STRES (and similar to those with 'open myocardium' already post-PCI) than those who had 'closed myocardium' at both occasions (80 vs. 52%, P=0.012). CONCLUSION: A significant increase was found in the number of patients with 'open myocardium' within the first week post-primary PCI and STRES seems to predict this improvement.
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Grip, Lars, 1952 (23)
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