| Role of atherosclerosis in spontaneous periodic contractions of isolated postmortem human coronary arteries. | |
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MedLine Citation:
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PMID: 3968866 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The role of atherosclerosis in coronary artery spasm was studied by morphometrical examinations of isolated postmortem human coronary arteries that were used for the observation of spontaneous periodic contractions. Isometric tension of coronary ring segments from seventy-six cadavers was recorded in a bath containing physiological saline solution. According to the degree of atherosclerosis, the segments were classified into three groups: minimum intimal lesion (Group I), moderate intimal lesion (Group II) and severe atherosclerotic lesion (Group III). Results were analyzed by a chi-square test. The incidence of the spontaneous periodic contractions was 45% in the proximal portion. Of the segments in which the contractions occurred, 83% were in Group II. There were significant differences in the incidence between Group I and II (33% vs 80%; p less than 0.02) and Group II and III (80% vs 25%; p less than 0.001), respectively. According to the characteristics of the atherosclerosis, there were significant differences in incidence of the contractions between circumferential thickening and eccentric thickening in Group II (63% vs 28%; p less than 0.001). In conclusion, the spontaneous periodic contractions occur most frequently in the segments in which (1) the degree of atherosclerosis is moderate rather than minimum or severe and (2) the characteristics of atherosclerosis is circumferential thickening instead of eccentric thickening. |
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Authors:
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K Kawasaki; K Seki; I Miyazawa; N Matsumoto; N Nakanishi; T Iino; K Saito; S Hosoda |
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Publication Detail:
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Type: In Vitro; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Japanese circulation journal Volume: 49 ISSN: 0047-1828 ISO Abbreviation: Jpn. Circ. J. Publication Date: 1985 Jan |
Date Detail:
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Created Date: 1985-03-19 Completed Date: 1985-03-19 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 7806868 Medline TA: Jpn Circ J Country: JAPAN |
Other Details:
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Languages: eng Pagination: 94-100 Citation Subset: IM |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Adult Aged Child Child, Preschool Constriction, Pathologic Coronary Disease / pathology* Coronary Vasospasm / etiology*, pathology Coronary Vessels / pathology* Female Humans Infant Male Middle Aged |
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