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  • 1990-1994  (6)
  • 1940-1944
  • Avena (phytochrome)  (3)
  • Stroke  (2)
  • Arachnoid cysts  (1)
  • Cyst growth  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Do arachnoid cysts grow? (1991)
    Springer
    Neuroradiology 33 (1991), S. 341-345 
    Details
    ISSN: 1432-1920
    Keywords: Arachnoid cysts ; Volume measured ; Cyst growth
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The volumes of intracranial arachnoit cysts were measured in 136 CT scans of 86 patients. Absolute and relative cyst size was calculated. Left hemisphere and middle cranial fossa location prevailed. A slight negative correlation of relative cyst size with age (r=−0.21, NS) disappeared when analysis was restricted to the adult age group (≥20 years). After the sample was divided into two groups according to relative cyst size (cysts less than mean volume vs cysts greater than mean volume), small AC showed no correlation with age, while large AC correlated positively with age (r=0.79,P〈0.05). A subgroup of large AC appears to expand with time, while the majority of small AC remain unchanged.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00587820
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Cranial MRI and CT in patients with left atrial myxoma (1992)
    Springer
    Neuroradiology 34 (1992), S. 57-61 
    Details
    ISSN: 1432-1920
    Keywords: Cardiac myxoma ; Stroke ; Cerebrovascular disease
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Six of 12 patients with histologically verified left atrial myxoma showed CT and MRI evidence of ischemic lesions of varying size and location, predominantly in the left hemisphere.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00588434
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Intracellular localisation of phytochrome in oat coleoptiles by electron microscopy (1990)
    Springer
    Planta 180 (1990), S. 372-377 
    Details
    ISSN: 1432-2048
    Keywords: Avena (phytochrome) ; Phytochrome (destruction, localisation, sequestering)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The intracellular localisation of phytochrome in oat (Avena sativa L. cv. Garry Oat) coleoptiles was analysed by electron microscopy. Serial ultrathin sections of resin-embedded material were indirectly immunolabeled with polyclonal antibodies against phytochrome together with a gold-coupled second antibody. The limits of detectability of sequestered areas of phytochrome (SAPs) were analysed as a function of light pretreatments and amounts of the far-red absorbing form of phytochrome (Pfr) established. In 5-d-old dark-grownAvena coleoptiles SAPs were not detectable if less than 13 units of Pfr — compared with 100 units total phytochrome of 5-d-old dark-grown seedlings — were established by a red light pulse. In other sets of experiments, seedlings were preirradiated either with a non-saturating red light pulse to allow destruction to occur or with a saturating red followed by a far-red light pulse to induce first SAP formation and then its disaggregation. These preirradiations resulted in an increase of the limit of detectability of SAP formation after a second red light pulse to 38–41 and 19–23 units Pfr, respectively. We conclude that with respect to Pfr-induced SAP formation an adaptation process exists and that our data indicate that SAP formation is not a simple self-aggregation of newly formed Pfr.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01160392
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Partial purification of sequestered particles of phytochrome from oat (Avenu sativa L.) seedlings (1991)
    Springer
    Planta 183 (1991), S. 265-273 
    Details
    ISSN: 1432-2048
    Keywords: Avena (phytochrome) ; Phytochrome (sequestering, immunolocalization)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Sequestered particles of phytochrome (SAPs) were partially purified from red-light-irradiated oat coleoptiles. Phytochrome pelletability was enhanced by using buffers containing 10 mM Mg2+ or high concentrations (0.6–0.8 M) of orthophosphate (Pi). Combining the pelletability of phytochrome in the presence of Mg2+ with that in the presence of 0.6 Pi resulted in a strong enrichment (about 100-fold) of pelletable phytochrome. Antisera were raised against Mg2+-Pi-pellets from darkgrown seedlings. Using these antisera, no evidence was found by Western blotting and immunocytochemistry that SAPs contain major proteins other than phytochrome. The major contamination of these enriched SAP preparations consisted of protein crystals which are probably catalase. The preparations contained methyltransferase and protein-kinase activities which were not associated with SAPs. Phytochrome purified from SAPs served as a substrate for protein-kinase activity but not for the methyltransferase activity. Phytochrome itself did not show any kinase activity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00197798
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Neurological long-term follow-up in left atrial myxoma: Are late complications frequent or rare? (1992)
    Springer
    Journal of neurology 239 (1992), S. 170-174 
    Details
    ISSN: 1432-1459
    Keywords: Atrial myxoma ; Neurological deficits ; Stroke ; Vasculitis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Neurological manifestations were analysed in 13 patients with left atrial myxoma confirmed by histological study. In this group, 6 patients had neurological complaints at initial presentation, 5 had cardiac symptoms, and 4 patients presented with signs of systemic disease. CT was performed in 10 and MRI in 7 patients. There were signs of ischaemic or haemorrhagic infarction (6 of 12) and one lesion suggestive of myxoma metastasis; other findings mainly comprised non-specific white matter lesions revealed by MRI. Neurological follow-up 0.5–8 years after tumour resection revealed no delayed neurological complications, follow-up CT and MRI findings were not suggestive of lesions acquired after operation. It is suggested that this rare condition of cardiac myxoma should be suspected in young patients with CNS symptoms or signs lacking cerebrovascular or cardiovascular risk factors and should be included in the differential diagnosis of vasculitis. With timely diagnosis and resection of the cardiac tumour the long-term prognosis can be considered improved.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00833920
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    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Intracellular localisation of phytochrome in oat coleoptiles by electron microscopy (1990)
    Springer
    Planta 180 (1990), S. 372-377 
    Details
    ISSN: 1432-2048
    Keywords: Avena (phytochrome) ; Phytochrome (destruction, localisation, sequestering)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The intracellular localisation of phytochrome in oat (Avena sativa L. cv. Garry Oat) coleoptiles was analysed by electron microscopy. Serial ultrathin sections of resin-embedded material were indirectly immunolabeled with polyclonal antibodies against phytochrome together with a gold-coupled second antibody. The limits of detectability of sequestered areas of phytochrome (SAPs) were analysed as a function of light pretreatments and amounts of the far-red absorbing form of phytochrome (Pfr) established. In 5-d-old dark-grown Avena coleoptiles SAPs were not detectable if less than 13 units of Pfr — compared with 100 units total phytochrome of 5-d-old dark-grown seedlings — were established by a red light pulse. In other sets of experiments, seedlings were preirradiated either with a non-saturating red light pulse to allow destruction to occur or with a saturating red followed by a far-red light pulse to induce first SAP formation and then its disaggregation. These preirradiations resulted in an increase of the limit of detectability of SAP formation after a second red light pulse to 38–41 and 19–23 units Pfr, respectively. We conclude that with respect to Pfr-induced SAP formation an adaptation process exists and that our data indicate that SAP formation is not a simple self-aggregation of newly formed Pfr.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00198788
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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