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Volume 45 (1993)
- Issue 3-4 Pages 179-
- Issue 2 Pages 109-
- Issue 1 Pages 1-
Volume 45, Issue 3-4
Displaying 1-3 of 3 articles from this issue
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[in Japanese], [in Japanese]1993 Volume 45 Issue 3-4 Pages 179-187
Published: December 20, 1993
Released on J-STAGE: February 19, 2013
JOURNAL FREE ACCESS -
Masahiro Karakawa1993 Volume 45 Issue 3-4 Pages 188-195
Published: December 20, 1993
Released on J-STAGE: February 19, 2013
JOURNAL FREE ACCESSWe evaluated the relationship between ST segment elevation in lead aVR and the coronary circulation in acute antero septal myocardial infarction. All eightynine patients were admitted to the coronary care unit within twelve hours and received emergency coronary angiography. The infarct-related artery (LAD or LMT) was occuluded in all patients. Thirteen patients had total occulusion in left main coronaly artery. Nine patients had three vessels disease. Twentytwo patients had two vessels disease. Forty-five patients had one vessel disease. Twelve lead electrocardiogram was recorded before emergency coronary angiography. The ST segment elevation in lead aVR was found in 92% patients of left main coronary artery occulusion,44%of three vessels disease and 27% of two vessels disease but only one patients (2%) of one vessel disease.
Thus, ST elevation in lead aVR in acute anteroseptal myocardial infarction indicates severe impairments of the overall coronary circulation. Particulary ST segment elevation in lead aVR is good sign when acute myocardial infarction occured in left main coronary arteryView full abstractDownload PDF (2229K) -
Yoshimi Kawamura1993 Volume 45 Issue 3-4 Pages 196-203
Published: December 20, 1993
Released on J-STAGE: February 19, 2013
JOURNAL FREE ACCESSSpore surface morphology of eight representative strains of micromonosporae were studied by transmission and scanning electron microscopy. Three main morphological types were observed: “smooth type”, “warty type” and “blunt spiny type”. The characteristic structures of these three types were found to be independent almost invariably on kinds of media used after more than 21-day incubation periods except some exceptions. Thus, electron microscopic method seemed to offer an important criterion in the classification of micromonosporae which exhibit little difference under light microscopic observation.
Subsequently this method was applied to the classification of 278 strains of micromonosporae isolated from soil samples collected in Japan and Uganda. Among them, smooth type and warty type strains were found with nearly equal frequency in soil samples from both regions, and sum total of strains belonging to these two types amounted to 70 to 80 per cent of the isolates. The intermediate type between smooth and warty type was also found with the frequency of about 10 per cent. Blunt spiny type micromonosporae appeared at very low frequency of 3to 5 per cent. Strains with spiny and hairy spore surface structures, known to occur frequently in streptomycetes, were not found among the micromonosporae strains used in this study.
Two strains each of micromonosporae which have the typical spore surface morphology described avobe, were used to study pathogenicity in mice. At 7 days after intravenous challenge, micromonosporae were isolated from internal organs, such as spleen, kidney, liver, etc.. However, the number of microorganisms in each internal organ decreased fairly rapidly, and most microorganisms had disappeared after 14 days in some cases and no changes in internal organs were observed with the naked eye. Additionally, as a result of observation of thin sections of each internal organ by microscopy, although slight inflammation was observed in some tissue samples, no remarkable change was observed in most samples. Therefore, it was judged that the micromonosporae used in this study have no pathogenicity in mice.View full abstractDownload PDF (2124K)
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