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Lymphocyte-increasing action and hypocalcemic action of parotid gland extract.

Lymphocyte-increasing action and hypocalcemic action of parotid gland extract. Research Abstract Details 

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  • Lymphocyte-increasing action and hypocalcemic action of parotid gland extract. Abstract Text:

    i suzukiI Suzuki,h inabaH Inaba,y naitoY Naito,t mizutaniT Mizutani,a mizutaniA Mizutani,

    It has previously been shown in our laboratory that the hypocalcemic substances purified from the thymus have a potent lymphocyte-increasing action in mice. Then, lymphocyte-increasing activity was examined with bovine parotid gland extracts, which showed a hypocalcemic activity as potent as that of the thymus extracts. The lymphocyte-increasing activity was assayed in the littermates of neonatal mice of Swiss-Webster strain; the materials used for this experiment were purified preparations and several fractions obtained from the parotid gland extracts in the course of purification. It was found that the potency of lymphocyte-increasing activity rose approximately in parallel with the rise in hypocalcemic activity with progress in purification. The final product, which was purified from the gland by isoelectric precipitation at pH 5.4, fractional precipitation with ammonium sulfate, chromatography on DEAE-cellulose, gel filtration on Sepharose 6B and preparative disc electrophoresis, gave a single band in polyacrylamide gel electrophoresis. Its intravenous injection in rabbits, in a dose of 10 mug/kg, produced a significant lowering in serum calcium (percent decrease 10.24 +/- 1.06%) compared with control animals given an injection of physiological saline. Intraperitoneal injection of this purified product, in a dose of 0.5 mug/mouse, in the littermates of neonatal mice, also produced a significant increase (ratio of lymphocytes to polymorphs 2.47 +/- 0.07) in lymphocytes compared with control animals injected with physiological saline (L/P ratio 1.57 +/- 0.05). These facts suggest that this purified protein fraction inherently contains both activities, but the possibility cannot be ruled out of slight contamination by a substance having a high activity. On the other hand, a fraction having no activity for lowering serum calcium but which had activity for increasing the lymphocytes was obtained. This is the first paper to report the presence of lymphocyte-increasing substances in the bovine parotid gland and the purification of one of the substances from the gland.

    Lymphocyte-increasing action and hypocalcemic action of parotid gland extract. Publishing Authors By Initials

    i suzukiI Suzuki,h inabaH Inaba,y naitoY Naito,t mizutaniT Mizutani,a mizutaniA Mizutani,

    For similar complex mixtures: tissue extracts research abstracts see: complex mixtures: tissue extracts research

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    Lymphocyte-increasing action and hypocalcemic action of parotid gland extract. Journal Published:

    PUBLICATION TYPE: Journal Article

    Journal: Journal of biochemistry

    VOLUME: 78

    Page Numbers: 697-703

    Journal Abbreviation: J. Biochem.

    ISSN: 0021-924X

    DAY: 19

    MONTH: Oct

    YEAR: 1975

    Lymphocyte-increasing action and hypocalcemic action of parotid gland extract. Information

    Number of References:

    LANGUAGE: eng

    NlmUniqueID: 376600

    Lymphocyte-increasing action and hypocalcemic action of parotid gland extract. Keywords Mesh Terms:

    KEYWORDS: Tissue Extracts

    MESH TERMS: physiology

    Chemical & Substance for Abstract: Lymphocyte-increasing action and hypocalcemic action of parotid gland extract. Information

    Substance Name: Tissue Extracts

    Registry Number: 0

    Grant and Affiliation Information for Lymphocyte-increasing action and hypocalcemic action of parotid gland extract.

    AFFILIATION:

    Country: JAPAN

    JAPAN Research PublicationJAPAN Research Publication

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    MEDLINETA: J Biochem

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