Cited by 1,842Cardiac Ischemia and ReperfusionAcute Myocardial Infarction ResearchCardiac Imaging and Diagnostics

The “no-reflow” phenomenon after temporary coronary occlusion in the dog

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Kloner, Robert A., Ganote, Charles E., Jennings, Robert B.·1974·Journal of Clinical Investigation

Abstract

The role of microvascular damage in the genesis of the "no-reflow" phenomenon was investigated in the left ventricular myocardium of dogs subjected to temporary occlusions of a major coronary artery for 40 and 90 min. Intravenous carbon black or thioflavin S (a fluorescent vital stain for endothelium) were used to demonstrate the distribution of coronary arterial flow in control and damaged myocardium. These tracers were injected simultaneously with release of the coronary occlusion or after 5 or 20 min of reflow of coronary arterial blood. After 40 min of ischemia plus arterial reperfusion, usually the tracers were evenly distributed throughout the damaged tissue at each time of reperfusion. On the other hand, when reflow was allowed after 90 min of ischemia, portions of the inner half of damaged myocardium were not penetrated by the tracers. Electron microscopic study of this poorly perfused tissue revealed severe capillary damage; endothelial cells with large intraluminal protrusions and decreased pinocytic vesicles were common. Also, occasional intraluminal fibrin thrombi were noted, as well as extravascular fibrin deposits and erythrocytes. Myocardial cells were swollen in both poorly perfused and well-perfused irreversibly injured tissue. Contraction bands and mitochondrial Ca(2+) accumulation were prominent features of irreversible injury with reflow at 40 min but were not noted after 90 min of ischemia in areas with poor perfusion. These results suggest that 40 min of ischemia were tolerated by the capillary bed of the dog heart without serious capillary damage or perfusion defects, but that 90 min of ischemic injury was associated with the "no-reflow" phenomenon, i.e., failure to achieve uniform reperfusion. This failure of reflow was associated with extensive capillary damage and myocardial cell swelling. Death of severely ischemic myocardial cells in this model occurs before the onset of capillary damage and the no-reflow phenomenon.

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  • Apoptosis induces endothelial swelling, microvascular spasms, and capillary obstruction, which slows or even stops microcirculation blood flow following reperfusion.

    “The apoptosis induces endothelial swelling, microvascular spasms, and capillary obstruction, which slows or even stops microcirculation blood flow following reperfusion [179].”

    From AMPK, Mitochondrial Function, and Cardiovascular Disease (2020) · cites this paper as [179]

  • I/R injury is primarily induced by endothelial cell apoptosis in microcirculation.

    “I/R injury is primarily induced by endothelial cell apoptosis in microcirculation.”

    From AMPK, Mitochondrial Function, and Cardiovascular Disease (2020) · cites this paper as [179]

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Research works printed but not linked: 2

  1. Kloner, R. A., C. E. Ganote, K. A. Reimer, and R. B. Jennings. 1974. Coronary flow during acute myocardial ischemia. Fed. Proc. 33: 592. (Abstr.)
  2. Rasmussen, M. M., K. A. Reimer, and R. B. Jennings. 1974. Propranolol therapy in experimental myocardial ischemia. Fed. Proc. 33: 591. (Abstr.) 1508

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Authors
Kloner, R. A., Ganote, C. E., & Jennings, R. B.
Affiliations
Northwestern University (US)
Venue
Journal of Clinical Investigation
Published
1974-12-01
Volume
54
Issue
6
Pages
1496-1508
ISSN
0021-9738 (ISSN-L)
OpenAlex
W2140233303
Cited by
1,842
References
25
Citations by year
2026: 21 · 2025: 25 · 2024: 28 · 2023: 30 · 2022: 37 · 2021: 37 · 2020: 30 · 2019: 44 · 2018: 36 · 2017: 35 · 2016: 53 · 2015: 53 · 2014: 43 · 2013: 46 · 2012: 55
FWCI
12.94
Type
journal article
Language
en
Open access
Locations
  • Journal of Clinical Investigation (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Heart and Lung Institute
  • National Institutes of Health
Topics
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Cardiac Ischemia and Reperfusion
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Acute Myocardial Infarction Research
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Cardiac Imaging and Diagnostics
Keywords
no-reflow phenomenon, myocardial ischemia, myocardial reperfusion, capillary damage, irreversible myocardial injury, coronary artery occlusion, thioflavin S, fibrin thrombi, mitochondrial calcium accumulation, contraction bands, ischemic tolerance
MeSH terms
Animals, Capillaries, Carbon, Coronary Circulation, Coronary Disease, Coronary Vessels, Dogs, Erythrocytes, Female, Fluorescence, Fluorescent Dyes, Ischemia, Male, Microcirculation, Microscopy, Electron, Mitochondria, Muscle, Myocardium, Papillary Muscles, Staining and Labeling, Thiazoles, Time Factors

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