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Histometrical Studies of Glial Nuclei in Experimental Ammoniemia of Rats Norio Suwa 1 , Shunichi Saso 1 1Department of Pathology, Tohoku University School of Medicine pp.700-703
Published Date 1965/12/25
DOI https://doi.org/10.11477/mf.1431904236

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  • Abstract
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Glial nuclei of human autopsy cases with liverdiseases were histometrically examined to evaluatetheir transformations to those of Alzheimer II typequantitatively. In normal brains logarithms of theproduct of the larger and lesser diameters of glialnuclei, when determined successively in randomlyselected areas irrespective of their histologicalclassifications, constituted a nearly symmetricalfrequency distribution with a single peak. In liverdiseases glial distribution was characterized bydistinct extension of its upper extremity withanother independent peak, due to appearance ofabnormally large nuclei beyond 7×8μ2 .This was most conspicuously observed in cases with hepato-cerebral disorders and liver cirrhosis. The sametendency, though less remarkable in its expression, could be confirmed in the majority of other liver diseases and likewise in cases with uremia. The result suggested that some metabolites, of which ammonia was regarded to be the most important, were responsible for the glial transformation inthese diseases. Experimental ammoniemia couldeffectively be induced in rats by peroral NH4C1administration or by intraperitoneal injection ofurease preparations to liberate ammonia fromendogenous urea. The frequency distribution ofglial nuclei of experimental animals perfectlyreproduced the pattern of human liver diseases.The result indicated that diffuse enlargement ofglial nuclei in liver diseases and in associatedconditions could most probobly be attributed to elevated blood ammonia lavel. The specificity of the reaction, however, remained still to be examined.


Copyright © 1965, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1243 印刷版ISSN 0001-8724 医学書院

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