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  • Cerebral blood flow  (1)
  • Chemistry  (1)
  • Diazo-positive urinary metabolites  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Cerebral blood flow in moyamoya disease (1990)
    Springer
    Acta neurochirurgica 105 (1990), S. 30-34 
    Details
    ISSN: 0942-0940
    Keywords: Cerebral blood flow ; moyamoya disease ; internal carotid artery occlusion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A study has been made of the cerebral blood flow (CBF) in moyamoya disease from the perspective of hemispheric cerebral blood flow and regional CBF (rCBF). The material includes 21 children between the ages of 5 and 15 years with moyamoya disease, and 19 adult moyamoya cases-all of which had virtually no neurological symptoms at the time of the study. CBF was measured using the133Xe intravenous injection method. Comparsion was made with the measurements from 16 normal children and 14 normal adults. Study was also made of the relationship between the angiographic stage of the disease and the CBF. With the exception of the more elderly patients, CBF was found to be significantly lower in the moyamoya cases than in normal subjects of the same age group. In all age groups, the distribution of rCBF showed a dominant posterior distribution, dissimilar to the dominant anterior distribution found in the normals. Among the juvenile moyamoya cases, there was a tendency toward decreasing hemispheric blood flow together with advancing disease-as determined angiographically. Moreover, with advancing stages of the disease, there was a continuing transition from the normal pattern of frontal dominance to one of occipital dominance. This dominance of posterior rCBF is thought to be a characteristic feature of moyamoya disease.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01664854
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    A field survey on the health status of workers in dye-producing factories (1977)
    Springer
    International archives of occupational and environmental health 39 (1977), S. 219-235 
    Details
    ISSN: 1432-1246
    Keywords: Anaemia ; Aromatic nitro-amino compounds ; Diazo-positive urinary metabolites ; Heinz bodies ; Hepatotoxicity ; Methemoglobinaemia ; Methemoglobin reductases
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Health status of the workers in dye-producing plants were examined repeatedly in winter and in summer. The items studied cover 1) diazo-positive metabolites in urine 2) methemoglobinaemia, Heinz bodies, methemoglobin reductases and anaemia, and 3) liver function. The urinary diazo-positive metabolite level in the exposed was higher than that in the non-exposed and marked a conspicuous increase in summer as compared in winter, indicating significant intake of the aromatic nitro-amino compounds, while no significant methemoglobinaemia, Heinz bodies, anaemia nor disturbed liver function was observed in any group of the examinees. The results were discussed in connection with the dose-effect relationship, and compared with the experiences in the past.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00409368
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Separation of B- and T-lymphocytes by cellular adsorption chromatography using poly(2-hydroxyethyl methacrylate)/polyamine graft copolymer as column adsorbent (1988)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Biomedical Materials Research 22 (1988), S. 555-571 
    Details
    ISSN: 0021-9304
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine , Technology
    Notes: A series of poly(2-hydroxyethyl methacrylate)/polyamine graft copolymers (HA copolymers) were examined as an adsorbent for cellular adsorption chromatography in order to separate cell populations with high efficacy. The capability of each copolymer sample to selectively adsorb rat lymphocyte subpopulations (B-cells and T-cells) was evaluated by applying a lymphocyte suspension to a copolymer-coated glass bead column. A separation factor (AB/AT) greater than 5.0 was achieved for the HA copolymer, compared to 1.9 and 1.1 for homopolymers of poly(2-hydroxyethyl methacrylate) and of a polyamine (poly(N,N-diethylaminoethylstyrene)), respectively. By loading a rat lymphocyte suspension containing B-cells (28%) and T-cells (72%) through the HA copolymer column, more than 60% of T-cells in 90% purity or more were recovered in the effluent.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jbm.820220610
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    Paper (German National Licenses)
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