Myocardial “stunning” in man
R. Bolli
This landmark paper by Bolli on the clinical
relevance of myocardial stunning is the first
attempt to build a bridge between laboratory
and real clinical conditions. Clinically,
stunning is the mechanical dysfunction that
persists after reperfusion despite the absence of irreversible
damage and restoration of normal or near-normal
coronary flow...
Low-dose dobutamine echocardiography detects reversible
dysfunction after thrombolytic therapy of acute myocardial
infarction
S.C. Smart, S. Sawada, T. Ryan, D. Segar, L. Atherton, K. Berkovitz, P.D.V. Bourdillon, H. Feigenbaum
This paper addresses the crucial issue of
whether myocardial stunning may occur
after thrombolytic treatment of acute
myocardial infarction and whether low-dose
dobutamine echocardiography may be useful
in distinguishing reversible from irreversible injury after
thrombolytic therapy...
Time course of functional improvement in stunned myocardium
in risk area in patients with reperfused anterior infarction
H. Ito, T. Tomooka, N. Sakai, Y. Higashino, K. Fujii, O. Katoh, T. Masuyama, A. Kitabatake, T. Minamino
Myocardial stunning was first described
and its mechanisms characterized in the
dog heart. Indeed, stunning has been
described as an experimental phenomenon
in search of a clinical manifestation...
Marked reduction of free radical generation and contractile
dysfunction by antioxidant therapy begun at the time
of reperfusion
R. Bolli, M.O. Jeroudi, B.S. Patel, O.I. Aruoma, B. Halliwell, E.K. Lai, P.B. McCay
In this key paper Bolli et al discuss the complex
and controversial issue of “reperfusion injury,”
whether it exists, and which mechanisms are
involved...
Cellular mechanisms of myocardial stunning
H. Kusuoka, E. Marban
After stressing that stunning can only be
studied in models that allow the myocardium
to be vascularly perfused, rendered truly
ischemic, and reperfused via the native
coronary circulation, explaining the usual
choice of the intact canine heart model, Kusuoka and
Marban suggest using the isolated perfused heart model...
Mechanism of myocardial stunning
R. Bolli
Although now 6 years old, there can be little
doubt that this review has stood the test of
time and that it is surely required reading for
anyone interested in myocardial stunning
and its possible clinical relevance...
Demonstration of free radical generation in the “stunned”
myocardium in the conscious dog and identification of major
differences between conscious and open-chest dogs
X.Y. Li, P.B. McCay, M. Zughaib, M.O. Jeroudi, J. F. Triana, R. Bolli
This paper describes yet another key
investigation from the laboratory of Bolli
and colleagues who have contributed greatly
to our understanding of the genesis,
mechanisms, and pharmacological control
of myocardial stunning, notably by providing strong
evidence that stunning is, at least in part, a manifestation
of reperfusion injury and that this injury is caused,
again at least in part, by free radical-mediated injury
resulting from a transient but severe burst of radical
production during the early minutes of reperfusion...
Mechanisms of chronic regional postischemic dysfunction
in humans: new insights from the study of noninfarcted
collateral-dependent myocardium
J.L.J. Vanoverschelde, W. Wijns, C. Depré, B. Essamri, G.R. Heyndrickx, M. Borgers, A. Bol, J.A Melin
In this interesting study, Vanoverschelde and
colleagues address the issue of patients with
coronary artery disease who have not suffered a
myocardial infarction and who present wallmotion
abnormalities that are reversible either
spontaneously or after recanalization...
Current diagnostic techniques of assessing myocardial viability
in patients with hibernating and stunned myocardium
V. Dilsizian, R. Bonow
This review by Dilsizian and Bonow on the
differentiation of viable from nonviable
myocardium in patients with coronary artery
disease and left ventricular dysfunction
- an issue of increasing clinical relevance -
represents a substantial contribution to improving the
management of such patients...
Occurrence of oxidative stress during reperfusion
of the human heart
R. Ferrari, O. Alfieri, S. Curello, C. Ceconi, A. Cargnoni, P. Marzollo, A. Pardini, E. Caradonna, O. Visioli
This article addresses for the first time the
existence of a possible link between
oxidative stress and stunning occurring
immediately after aortocoronary bypass
grafting in humans...
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