Abstract:
BACKGROUND:Reperfusion injury and its modulation are incompletely characterized. The purpose of the present study was to characterize the dynamics of reperfusion injury by portraying the temporal release of lactate dehydrogenase (LDH) during ischemia-reperfusion injury in an isolated heart model. METHODS:We studied infarct size and LDH release in the following groups: I) Effect of reperfusion length was evaluated in 79 rats subjected to 40 minute ischemia and 60, 90, 120 or 180 minute reperfusion and a) ischemic preconditioning (IPC) or b) No IPC (control). II) LDH release kinetics was studied in 6 rats subjected to calcium-paradox to verify the applicability of LDH as a dynamic marker of cellular injury. III) Ischemia-reperfusion injury modification was studied in 36 rats subjected to: a) ischemic postconditioning, b) prolonged ischemia, c) Reperfusion Injury Salvage Kinase (RISK) pathway inhibition with wortmannin in IPC hearts, d) RISK activation with insulin or e) mitochondrial permeability transition pore (mPTP) inhibition with cyclosporine A. RESULTS:Infarct size increased from 60 to 180 minute reperfusion in control hearts. LDH was released in two separate peaks from 2 to 20 and 30 to 120 min of reperfusion. IPC attenuated both peaks. Postconditioning and agents known to modify reperfusion injury attenuated the second peak. CONCLUSIONS:Frequent measurement of myocardial ischemia markers for 120 min of reperfusion allows identification of two phases of reperfusion injury that are affected by cardioprotective stimuli. The second phase contributes significantly to final infarct size, which is modifiable and a potential target for cardioprotective interventions.
journal_name
Int J Cardioljournal_title
International journal of cardiologyauthors
Povlsen JA,Løfgren B,Dalgas C,Jespersen NR,Johnsen J,Bøtker HEdoi
10.1016/j.ijcard.2013.11.035subject
Has Abstractpub_date
2014-01-15 00:00:00pages
9-14issue
1eissn
0167-5273issn
1874-1754pii
S0167-5273(13)02053-6journal_volume
171pub_type
杂志文章abstract::We tested the hypothesis of anaphylaxis as a pathogenic factor in acute myocardial infarction. Mast cells were counted in the myocardium, coronary arteries and airways. Total serum IgE, mast cell tryptase, complements C3, C4, and factor B, were measured in 29 cases of sudden death from coronary artery thrombosis and i...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/0167-5273(95)02448-6
更新日期:1995-11-10 00:00:00
abstract::It is a common practice to perform percutaneous or open coronary artery revascularisation in CHD to prevent sudden or unexpected death. Such a practice assumes that sudden and unexpected death is common in stable patients with uncomplicated CHD. This is a retrospective analysis of 248 patients (199, 80% men, 49, 20% w...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2006.05.031
更新日期:2007-05-16 00:00:00
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journal_title:International journal of cardiology
pub_type: 杂志文章,评审
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abstract::The present study has examined the role of diltiazem as a protective agent in a canine model of norepinephrine cardiotoxicity. Effects of diltiazem, 20 micrograms/kg/min x 5 min pretreatment followed by 10 micrograms/kg/min x 90 min, or saline infusion were examined at baseline and 1 h after infusion of norepinephrine...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/0167-5273(92)90105-c
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journal_title:International journal of cardiology
pub_type: 临床试验,杂志文章
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journal_title:International journal of cardiology
pub_type: 信件
doi:10.1016/j.ijcard.2007.07.175
更新日期:2009-04-17 00:00:00
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journal_title:International journal of cardiology
pub_type: 信件
doi:10.1016/j.ijcard.2007.12.107
更新日期:2009-05-29 00:00:00
abstract:AIMS:The activated AMP activated protein kinase (AMPK) serves as a transient protective cardiovascular kinase via preserving adenosine triphosphate (ATP) production under ischemic conditions. However, recent studies reveal that inhibition of AMPK in stroke is neuroprotection. Pigment epithelium derived factor (PEDF) is...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2018.01.034
更新日期:2018-04-15 00:00:00
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journal_title:International journal of cardiology
pub_type: 杂志文章
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更新日期:2006-03-08 00:00:00
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journal_title:International journal of cardiology
pub_type: 杂志文章
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更新日期:1995-01-27 00:00:00
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journal_title:International journal of cardiology
pub_type: 信件
doi:10.1016/j.ijcard.2014.12.143
更新日期:2015-03-01 00:00:00
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journal_title:International journal of cardiology
pub_type: 临床试验,杂志文章
doi:10.1016/s0167-5273(00)00278-3
更新日期:2000-07-31 00:00:00
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journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2018.10.029
更新日期:2019-01-15 00:00:00
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pub_type: 信件
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更新日期:2006-07-28 00:00:00
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pub_type: 评论,信件
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更新日期:2008-08-29 00:00:00
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journal_title:International journal of cardiology
pub_type: 信件
doi:10.1016/j.ijcard.2007.08.136
更新日期:2009-03-20 00:00:00
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journal_title:International journal of cardiology
pub_type: 杂志文章,评审
doi:10.1016/0167-5273(94)90084-1
更新日期:1994-01-01 00:00:00
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journal_title:International journal of cardiology
pub_type: 杂志文章
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journal_title:International journal of cardiology
pub_type: 杂志文章,多中心研究
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journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/0167-5273(88)90080-0
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pub_type: 临床试验,杂志文章
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journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2016.06.010
更新日期:2016-09-15 00:00:00
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journal_title:International journal of cardiology
pub_type: 信件
doi:10.1016/j.ijcard.2009.02.017
更新日期:2011-05-05 00:00:00
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pub_type: 杂志文章
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更新日期:2008-10-30 00:00:00
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journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2017.03.123
更新日期:2017-11-01 00:00:00
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journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2005.01.007
更新日期:2005-10-20 00:00:00
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pub_type: 信件
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更新日期:2007-01-02 00:00:00
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journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2014.03.176
更新日期:2014-06-01 00:00:00
abstract:BACKGROUND:The efficacy and safety of warfarin for stroke prevention in atrial fibrillation (AF) depend on the time in the therapeutic range (TTR) with an international normalised ratio (INR) of 2.0-3.0. This meta-analysis focused the relative efficacy and safety of non-VKA oral anticoagulants (NOAC) compared with warf...
journal_title:International journal of cardiology
pub_type: 杂志文章,meta分析
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更新日期:2017-10-01 00:00:00
abstract::After a documented decline in the incidence of acute rheumatic fever in the United States during the past three decades, an apparent resurgence has occurred in the mid-1980s. Although standards of living have continued to improve with concomitant decrease in crowding and easier accessibility to medical care, the preci...
journal_title:International journal of cardiology
pub_type: 杂志文章,评审
doi:10.1016/0167-5273(88)90003-4
更新日期:1988-10-01 00:00:00