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  • 1
    Electronic Resource
    Electronic Resource
    Intracranial lipomas (1991)
    Springer
    Acta neurochirurgica 110 (1991), S. 124-128 
    Details
    ISSN: 0942-0940
    Keywords: Computed tomography ; intracranial lipoma ; magnetic resonance imaging ; surgical management
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Intracranial lipomas are very rare, probably congenital lesions. Though they can occur anywhere in the intracranial space, a good proportion of cases tend to be located around the midline. Review of the literature as well as our own three cases — which forms the basis of this article — shows that they are mostly asymptomatic. When symptoms occur, they are frequently the result of coexisting general clinical conditions. Lipomas used to be reported mainly as incidental findings at autopsy. Advances in neuro-imaging techniques have vastly improved the likelihood of their being discovered during life. At present however, significant increase in the reported incidence of these tumours is yet to be seen. Surgical extirpation of the tumour is not considered necessary in the majority of patients, many of whom show remarkable clinical improvement following shunt procedures for obstructive hydrocephalus as well as treatment of coexisting conditions such as epilepsy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01400679
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    The significance of periventricular lucency on computed tomography: Experimental study with canine hydrocephalus (1981)
    Springer
    Neuroradiology 20 (1981), S. 221-227 
    Details
    ISSN: 1432-1920
    Keywords: Computed tomography ; Hydrocephalus ; Periventricular lucency
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In order to investigate the pathogenesis of periventricular lucency (PVL) in hydrocephalus, CT scans were performed with monitoring of the epidural pressure in a series of dogs with hydrocephalus induced with kaolin. PVL of various degrees was detected in the experimental animals, which disappeared immediately after a shunting operation. Correlations have been attempted between PVL on CT scans and histological examinations, contrast enhancement studies, metrizamide ventriculography, and measurement of regional cerebral blood flow in the periventricular white matter. PVL in hydrocephalus is considered to represent acute edema or chronic CSF retention in the periventricular white matter caused by an increase of water content. In other words, it is regarded as a sign of existing or preceding intraventricular hypertension on CT scan, and seems to be a reversible phenomenon to some extent. PVL may therefore became an indication for a shunt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00342088
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Reinvestigation of anhydroserricornin, (2S,3S)-2,6-diethyl-3,5-dimethyl-3,4-dihydro-2H-pyran, as a sex pheromone component for male cigarette beetle (1986)
    Springer
    Journal of chemical ecology 12 (1986), S. 179-186 
    Details
    ISSN: 1573-1561
    Keywords: Sex pheromone ; cigarette beetle ; Lasioderma serricorne (F.) ; Coleoptera ; Anobiidae ; serricornin ; 7-hydroxy-4,6-dimethyl-3-nonanone ; anhydroserricornin ; 2,6-diethyl-3,5-dimethyl-3,4-dihydro-2H-pyran
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Reinvestigation of the pheromonal activity of anhydroserricornin, (2S,3S)-2,6-diethyl-3,5-dimethyl-3,4-dihydro-2H-pyran, showed that the magnitude of its activity was less than 1/103 of that of serricornin, 7-hydroxy-4,6-dimethyl-3-nonanone, the sex pheromone of the cigarette beetleLasioderma serricorne (F.). Neither a synergistic nor an inhibitory effect of anhydroserricornin addition on the action of serricornin was observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01045601
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Inhibitory action of (4S,6S,7R)-isomer to pheromonal activity of serricornin, (4S,6S,7S)-7-Hydroxy-4,6-dimethyl-3-nonanone (1986)
    Springer
    Journal of chemical ecology 12 (1986), S. 83-89 
    Details
    ISSN: 1573-1561
    Keywords: Sex pheromone ; cigarette beetle ; Lasioderma serricorne (F.) ; Coleoptera ; Anobiidae ; serricornin ; 7-hydroxy-4,6-dimethyl-3-nonanone ; inhibitory action of diastereoisomer
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract By adding the effects of a series of the stereoisomers to the pheromonal activity of serricornin, (4S,6S,7S)-7-hydroxy-4,6-dimethyl-3-nonanone, the sex pheromone of the cigarette beetleLasioderma serricorne (F.) was investigated. The experiments using synthetic enantiomeric mixtures and optically active stereoisomers showed that the (4S,6S,7R)-isomer inhibited significantly the pheromonal activity of serricornin.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01045592
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    Paper (German National Licenses)
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