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Volume 31, Issue 1
Displaying 1-4 of 4 articles from this issue
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Katsumi HAMANA, Kazuya USUI, Masaaki HATAYA1969 Volume 31 Issue 1 Pages 1-8_1
Published: February 25, 1969
Released on J-STAGE: February 13, 2008
JOURNAL FREE ACCESSA successful crystallization of glycogen phosphorylase b from skeletal muscles of rats was carried out, while an attempt to crystallize this enzyme from skeletal and heart muscles of dogs failed. Examination of the purified crystal and enzyme fluid by disc electrophoresis did not show the existence of isozymes between skeletal and heart muscles in either species.View full abstractDownload PDF (840K) -
Shoji YAMAUCHI, Fumihiko SASAKI1969 Volume 31 Issue 1 Pages 9-22_4
Published: February 25, 1969
Released on J-STAGE: February 13, 2008
JOURNAL FREE ACCESSDownload PDF (2526K) -
Kyoichi KAGAWA, Osamu YAGASAKI, Tadashi TAKEWAKI, Iwao YANAGIYA1969 Volume 31 Issue 1 Pages 23-27_1
Published: February 25, 1969
Released on J-STAGE: February 13, 2008
JOURNAL FREE ACCESS1. Inhibitory response to nicotine was observed in fresh intestinal preparations isolated from chicks 1 week to 3 months of age, and only contraction in fresh intestinal preparations from adult domestic fowls. 2. The inhibitory action of nicotine was enhanced after cooling. Even in intestinal preparations from adult fowls, inhibitory response appeared frequently. 3. The inhibitory nicotine response to the intestinal preparation was supposed to be due to stimulation of ganglion cells, as it was abolished by hexamethonium. 4. Existence of two kinds of functionally distinct fibers in the myenteric plexus was revealed also in the avian intestine. When stimulated, one caused contraction and the other inhibition of the intestinal Movement. 5. The differential development of such two kinds of functionally antagonistic fibers in the inner plexus was suggested.View full abstractDownload PDF (614K) -
Hiromitsu OTSUKA1969 Volume 31 Issue 1 Pages 29-34
Published: February 25, 1969
Released on J-STAGE: February 13, 2008
JOURNAL FREE ACCESSIn the previous report, electromyographical examination of the effect of anesthetics showed that the standing posture was influenced by the variation of the mode of fixation on the hind-limb joints. Especially, it should be noted that the fixation of the knee joint and paralysis of hind quarters were closely related to each other. In this investigation, the influence of anesthesia exerted upon the nervous mechanism which controls the muscular activity was examined by analyzing the fluctuation of the discharge-interval-time series of a single NMU. In two dogs which had been trained in maintaining the normal standing posture for a long time, the spike discharge of a single NMU was recorded from the flexor muscles of the forelimb, M. quadriceps femoris, and M. gastrocnemius. The discharge intervals measured from the record and the τ-S relation diagram were used as refernces for discussion. The results obtained dre summarized as follows. (1) In the case of the forelimb muscle, corticalization occurred at all the stages of anesthesia; that is, the initial, anesthetic, and recovery stages. (2) In the case of the hind-limb muscle, spinalization occurred at the initial stage. This phenomenon appeared about two minutes after administration of the drug. At the recovery stage, the control by both spinal and cortical nervous systems occurred on the muscle.View full abstractDownload PDF (632K)
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