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Clinical pathology of primitive gliomas in the cerebrum (1986)

Inoue, H. K. ; Kunimine, H. ; Zama, A. ; [et al.]

Springer

Acta neurochirurgica 81 (1986), S. 94-99

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ISSN: 0942-0940

Keywords: Primitive glioma ; ependymoblastoma ; undifferentiated glioma ; unclassified glioma

Source: Springer Online Journal Archives 1860-2000

Topics: Medicine

Notes: Summary To clarify the biological features of primitive gliomas in the cerebrum and clearly distinguish them from malignant or anaplastic gliomas and glioblastomas, we studied eight cases clinically and pathologically. Our evaluations included immunohistochemical and electron microscopic observations. We divided the patients into two groups, children and young adults. Most tumours appeared as ring-like, enhanced masses on computed tomography and avascular or ring-like, vascular masses on angiography. Macroscopically, the tumours were well demarcated and contained cysts. Ocassionally we found tumour dissemination. Microscopically, the tumours were composed of small, round cells without remarkable structural features. Ependymal, astroglial, and oligodendroglial differentiation was evident, in varying proportions; tumours in which the differentiated areas constituted more than half of the mass were classified as poorly differentiated gliomas. By these criteria, this series comprised four undifferentiated and four poorly differentiated gliomas. Cell anaplasia and polymorphism were rare in both undifferentiated and differentiated areas of the tumours. Immunohistochemical and electron microscopic examinations also revealed glial differentiation. These primitive gliomas appear to be biologically similar, but not identical, to cerebellar medulloblastomas. In this series, five patients died because of recurrence or dissemination. Whole brain and spinal irradiation should be considered after total or subtotal surgical removal.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF01401228

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Effect of organic solvents on the activity of glucoamylase (1986)

Nagamoto, H. ; Yasuda, T. ; Inoue, H.

New York, NY [u.a.] : Wiley-Blackwell

Biotechnology and Bioengineering 28 (1986), S. 1172-1177

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ISSN: 0006-3592

Keywords: Chemistry ; Biochemistry and Biotechnology

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology

Notes: Hydrolyses of maltose, maltotriose, and soluble starch catalyzed by glucoamylase (Asp. Niger) were carried out in the aqueous solutions of methanol, ethanol, ethylene glycol, and 1,4-dioxane at 40°C and at the optimum pH in the respective solutions. By the kinetic analysis based on the subsite model, it was shown that the intrinsic rate constant, Kint, was electrostatically affected by the dielectric constant of the hydroorganic solutions. The affinity of the third subsite, A3, which affects the apparent rate constant, K0, was correlated with the ×Gtr's of maltose and amino acid side chains.

Additional Material: 5 Ill.