Journal of The Showa Medical Association
Online ISSN : 2185-0976
Print ISSN : 0037-4342
ISSN-L : 0037-4342
Volume 21, Issue 10
Displaying 1-7 of 7 articles from this issue
  • Yasuo Kawakami
    1962 Volume 21 Issue 10 Pages 687-691
    Published: January 28, 1962
    Released on J-STAGE: September 09, 2010
    JOURNAL FREE ACCESS
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  • Sadamu Watanabe
    1962 Volume 21 Issue 10 Pages 692-699
    Published: January 28, 1962
    Released on J-STAGE: September 09, 2010
    JOURNAL FREE ACCESS
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  • Kenjiro Seki
    1962 Volume 21 Issue 10 Pages 700-706
    Published: January 28, 1962
    Released on J-STAGE: September 09, 2010
    JOURNAL FREE ACCESS
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  • Kazuo Mori
    1962 Volume 21 Issue 10 Pages 707-715
    Published: January 28, 1962
    Released on J-STAGE: September 09, 2010
    JOURNAL FREE ACCESS
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  • Fumi Hishida, Koichi Iguchi, Kazuya Inoue
    1962 Volume 21 Issue 10 Pages 716-720
    Published: January 28, 1962
    Released on J-STAGE: September 09, 2010
    JOURNAL FREE ACCESS
    The sciatic nerve of a toad was stimulated twice by electrical pulses of short interval successively. The action potentials evoked in that nerve were recorded by the cathod ray oscillograph. One of the stimulating electrodes which was placed near the leading electrode was chosen as the anode of the stimulating current. The nerve was ligated by a thin cotton thread, between the two stimulating electrodes. Thus the effect of the cathodal make excitation could be eliminated from the record, and only the results of the anodal break excitation were registered.
    In such a way, the change of the excitability, caused by the anodal break stimulation, was puasued, using the anodal break stimulation as the testing shock, and the so-called recovery curves were treated.
    The recovery process pursued by the anodal break excitation showed no difference from that pursued by the cathodal make excitation.
    In the cardiac muscle, Brooks et al. have discovered the occurence of the elevation of excitability for the anodal break stimulation at the later period of the relative refractoriness. Such a phenomenon could not be found in the nerve.
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  • VI. Galactose Sensitivity Test of Mutabile-Type Variant by Simultaneous Apply Method to both Medium and Paperdisc
    Isamu Fukutome, Koji Tachibana, Masako Toda, Masami Yamaguchi
    1962 Volume 21 Issue 10 Pages 721-725
    Published: January 28, 1962
    Released on J-STAGE: September 09, 2010
    JOURNAL FREE ACCESS
    One percent of BTB pepton agar suspended with mutabile-type variant (Murase) was used as a standard seed layer as similar to that of penicillin assay. The diameter of inhibition zone. appeared around a galactose paper disc or a cup in growths of mutabile-type variant was measured. The results were summarized as follows:
    1. The diameter of inhibition zone was varied according the duration of diffusion time of galactose into the medium, that is, the diameter of the zone increased in length when the concentration of lactose was high, while it decreased or disappeared when the concentration was low. So, it was appeared that inhibition zone will not formed when the concentration of galactose at the applied areas was under effective dose to produce inhibition zone.
    2. when small amount of galactose which will not produce inhibiting zone was added previously to the seedlayer, the effect of galactose in the medium became more sensitive, then, in this assay, both doses of galactose which might be contained in the specimen and in the medium will sum up to the high concentration enough to form the inhibition zone or to enlarge a diameter of the zone. The sensitive amount of galactose measured in γ concentration became 4-8 times higher than that of standard medium.
    This new findings could be applied to find the biological test of galactoside, antibiotics and blood samples in a test of liver functions and to the studies on enzymatic action of the microorganisms etc. Studies along this line are now under way and details will be published in near future.
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  • Tsuneichi Yamamoto
    1962 Volume 21 Issue 10 Pages 726-728
    Published: January 28, 1962
    Released on J-STAGE: September 09, 2010
    JOURNAL FREE ACCESS
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