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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of chemical & engineering data 8 (1963), S. 193-196 
    ISSN: 1520-5134
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of the American Chemical Society 76 (1954), S. 3149-3153 
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Acta neuropathologica 3 (1963), S. 57-73 
    ISSN: 1432-0533
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Acta neuropathologica 3 (1964), S. 490-493 
    ISSN: 1432-0533
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Si un mélange de phospholipides est traité durant seize heures à 37° avec KOH N et ensuite pendant trois jours à 37° avec 10% d'acide trichloracetique, presque tous les phospholipides seront hydrolysés. Ne résisteront à ce traitement que la sphingomyéline et peut-être quelques phospholipides qui ne sont présentes que dans des quantités minimes dans le système nerveux normal. Les auteurs proposent ce procédure pour estimer le taux de «sphingomyéline». Ce terme a été mis entre guillemets pour attirer l'attention sur la présence de petites quantités de phospholipides autres que shpingomyéline.
    Notes: Summary Almost all phospholipids are hydrolysed by treatment with N KOH at 37° for 16 hrs followed by 10% trichloracetic acid at 37° over a 3-day-period. After this treatment there remains only sphingomyelin and probably certain phospholipids of a type which occurs only in exceptionally small quantities in the CNS. This method is proposed for the estimation of the „sphingomyelin” content. This term is to be set between quotation marks to draw special attention to the small quantity of phospholipids apart from sphingomyelin.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Acta neuropathologica 1 (1961), S. 289-307 
    ISSN: 1432-0533
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Zusammenfassung 1. Es gibt familiäre Krankheiten, die klinisch den progressiven Leukodystrophien entsprechen; sie beginnen im Kindesalter, die Zeitspanne bis zum letalen Ausgang ist von Fall zu Fall verschieden. Anatomisch erweisen sie sich als degenerative Prozesse der Groß- und Kleinhirnmarklager, die nur sudanophile Abbauprodukte in geringer Menge, jedoch keine metachromatischen oder prälipoiden intracellulären Produkte in nennenswerter Menge hinterlassen. Trotz der Unterschiede in der Überlebenszeit bis um das Doppelte stimmen die Läsionen untereinander weitgehend überein und man ist davon überrascht, wie nahe sie sich auch in ihrer Intensität kommen. 2. Bei den beschriebenen Fällen finden sich neben den Veränderungen der orthochromatischen Leukodystrophie Nervenzell- und Strangdegenerationen, die Abiotrophien des optostriären, der mesencephalen und spinocerebellaren Systeme darstellen. 3. Die morphologischen Befunde erlauben keinen Schluß hinsichtlich der Beziehungen zwischen den beiden Reihen von Veränderungen; vielleicht werden sie sich mit anderen Methoden aufdecken lassen. 4. In pathochemischer Hinsicht verhalten sich die Gewebe der beiden Fälle aus der Familie Huys nicht wie die metachromatischen Leukodystrophien; eine diesbezügliche ausführlichere Studie wird später veröffentlicht werden.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Acta neuropathologica 13 (1969), S. 182-193 
    ISSN: 1432-0533
    Keywords: Neurochemistry ; Hexosamine ; Leucodystrophies ; Demyelination ; Lipidoses, Cerebral
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Während der ersten 6 Monate der Formalinfixierung sinkt der Gehalt an Lipid-Hexosamin (LHA) in der grauen und weißen Hirnsubstanz etwa um 20%. Das Rest-Hexosamin (RHA) sinkt in der weißen Substanz nicht weiter ab, steigt aber in der grauen Substanz. Die Bestimmung von LHA und RHA nach sechsmonatiger Fixation reicht für quantitative biologische und pathologische Untersuchungen aus. Während der Hirnentwicklung kommt es zu einem Anstieg und späteren Abfall des RHA in der grauen und weißen Substanz. Höchstwerte werden in der weißen Substanz früher als in der grauen erreicht. LHA und RHA waren normal in grauer und weißer Substanz bei Entmarkungsprozessen nicht-metabolischer Genese. Erhöhter LHA-Gehalt wurde in der weißen Substanz von metachromatischer Leukodystrophie, Tay-Sachsscher Erkrankung und einigen anderen Leukodystrophien gefunden. RHA-Anstieg ging konstant mit einem LHA-Anstieg in der weißen, nicht aber in der grauen Substanz, either.
    Notes: Summary During the first six months of formalin fixation LHA values decrease about 20% in both grey and white matter. RHA does not decrease in the white matter but increases in the grey matter. Determination of LHA and RHA after six months of fixation is accurate enough for quantitative biological and pathological studies. During development there is an increase and subsequent fall in RHA in grey and in white matter. Maximum values are reached earlier in white than in grey matter. LHA and RHA were normal in grey and white matter in demyelinating conditions of non-metabolic origin. Increased LHA values were observed in white matter of metachromatic leucodystrophy, Tay-Sachs disease, and some other leucodystrophies. RHA increase invariably was co-occurring with LHA increase in the white matter but not so in the grey matter.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Acta neuropathologica 3 (1964), S. 578-587 
    ISSN: 1432-0533
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Beobachtung eines leukodystrophischen Syndroms mit Ablagerung von Sudan III-positiven Lipoiden in der weißen Substanz bei einem 7 Monate alten Knaben, welcher vom 1. Lebenstag an klinische Auffälligkeiten gezeigt hatte. Vom anatomisch-klinischen Standpunkt entspricht dieser sporadische Fall am ehesten den vonZeman u. Mitarb. beschriebenen familiären Fällen. Im Gegensatz zum ZNS zeigten die Hirnnerven und Rückenmarkswurzeln in den Routinefärbungen keine Entmarkung. Die biochemischen Untersuchungen erwiesen eine Vermehrung sowohl von Lipoid- als auch von nicht-Lipoidhexosamin in der weißen Substanz; derselbe Befund war in 5 von 21 Fällen mit sudanophiler Leukodystrophie (einschließlich der P.M.-Kh.) erhoben worden, die aus verschiedenen Laboratorien gesammelt wurden. Alkali- und säurefeste Cholinphospholipoide („Sphingomyelin”) waren in der grauen Substanz in normaler Menge vorhanden und in der weißen Substanz nur leicht vermindert, was der Tatsache zu widersprechen scheint, daß im ZNS fast kein färbbares Myelin gefunden wurde. Dasselbe gilt hinsichtlich der normalen Werte für das Sulfatid in der weißen Substanz. Die neutralen Cerebroside waren jedoch in der weißen Substanz extrem vermindert, was mit dem erwähnten völligem Fehlen von färbbarem Myelin im Einklang steht. Hinsichtlich der Pathogenese dieses Krankheitsbildes wird keine Stellung bezogen, da die heute darüber bekannten Tatsachen als unzureichend anzusehen sind.
    Notes: Summary A leucodystrophy syndrome with Sudan-III positive lipids in the white matter was observed in a 7 months old boy who had shown clinical abnormalities from the first day of life. From an anatomo-clinical point of view the case compares best to cases described byZeman et al., although these were familial and the present case was not. In contrast to the central nervous system, cranial nerves and spinal roots did not show demyelination in routine preparations. Biochemical studies showed increase of both lipid and non-lipid hexosamine in the white matter and this was also found in 5 out of 21 cases of sudanophilic leucodystrophy (including P.-M.'s disease) collected from various laboratories. The quantity of alkali-and acid stable choline phospholipids (“sphingomyelin”) was normal in the grey matter and only slightly decreased in the white matter which seems to be at controverse with the fact that almost no stainable myelin could be detected, with the fact that the central nervous system was almost devoid of stainable myelin. This is also true in respect to the normal value for sulphatide measured in the white matter. Neutral cerebrosides, however, were extremely decreased in the white matter which is in accordance to the above mentioned absence of stainable myelin. No view is taken in regard to the pathogenesis of this condition because factual information is considered too scanty as yet.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Marine biology 95 (1987), S. 599-610 
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The potential of drifting Macrocystis pyrifera kelp for transporting associated animals and plants long distances around the southern oceans was assessed by anchoring kelp holdfasts off the Tasmanian coast in 1985, monitoring the turnover of organisms, and relating species survival to water-transport times and species geographic distributions. Although most of the common animal species and approximately half of the plant species associated with Tasmanian M. pyrifera holdfasts were still present on kelp holdfasts after 191 d at sea, very few of these species have been recorded from New Zealand. It therefore seems unlikely that M. pyrifera plants with intact holdfasts are presently drifting to New Zealand. Drifting kelps probably become negatively buoyant in the Tasman Sea because dissolved nitrate concentrations are insufficient for normal plant growth. Moreover, even if some kelp plants do drift to New Zealand it is possible that their holdfasts rapidly disintegrate in the open ocean because of the abundance of the boring isopods Phycolimnoria spp. in Tasmanian holdfasts. In contrast to the restricted distributions of Tasmanian holdfast-inhabiting species, most of the identified species collected from M. pyrifera holdfasts at subantarctic Macquarie Island also occurred 5 000 km west at Kerguelen Island. Because of the extensive ranges of many subantarctic species, the good probability of survival of epifaunal species on drifting kelps, and the high surface-water nitrate concentrations and low holdfast-densities of Phycolimnoria spp. in the higher latitudes, it is likely that M. pyrifera-mediated transport of faunal and floral propagules has recently occurred, and is probably presently occurring, in subantarctic waters.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 616 (1990), S. 0 
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
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