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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Acta neuropathologica 13 (1969), S. 157-168 
    ISSN: 1432-0533
    Keywords: Gangliosides ; Tay-Sachs Disease ; Brain Subcellular Localization ; Hale Stain ; Electron Microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Die Reaktion von kolloidalem Eisen mit Sialomucinen (Hale stain) wurde zur elektronenmikroskopischen Darstellung der neuraminsäurehaltigen Ganglioside in den subcellulären Fraktionen des Gehirns angewandt. Zunächst wurde mit Hilfe tritiummarkierter Ganglioside überprüft, ob bei der Gewinnung subzellulärer Fraktionen Ganglioside nicht unspezifisch subcellulär adsorbiert werden. Eine nennenswerte Adsorption konnte ausgeschlossen werden. Das Verfahren wurde zuerst auf die aus Meerschweinchengehirnen isolierten Fraktionen angewandt. Da Nervenendigungen, Mitochondrien und Synapsenbläschen Hale-positiv reagierten, dienten Enzyminkubationen mit Neuraminidase und Hyaluronidase zur Differenzierung von anderen Hale-positiven sauren Substanzen. Schließlich wurde die Methode auf die cytoplasmatischen multilamellären Körperchen (MCB) übertragen, die aus Gehirnen an Tay-Sachs'scher Krankheit Verstorbener isoliert wurden. Aus den Versuchen konnte abgeleitet werden, a) daß die Hale-Färbung auch Ganglioside anfärbt, b) daß Ganglioside auf der Oberfläche der Membran von den multilamellären Körperchen und mit hoher Wahrscheinlichkeit auch auf der Membran der Nervenendigungen lokalisiert sind, c) daß die Synapsenbläschen eine positive Reaktion ergeben, die jedoch nicht mit Sicherheit auf vorhandene Ganglioside zurückgeführt werden kann, d) daß die äußere Mitochondrienmembran Hale-positive Substanzen enthält, deren Natur unbekannt ist.
    Notes: Summary The reaction of colloidal ferric oxide with sialomucins (Hale stain) was applied to sialic acid-containing gangliosides in subcellular fractions of the brain, in order to investigate their localization by electron microscopy. Prior to all experiments, a check was made, by means of tritium-labeled ganglioside, to confirm that the ganglioside content in the subcellular particles was not the result of an unspecific adsorption during the isolating procedure. No considerable unspecific adsorption could be registered. Hale stain was first applied to subcellular fractions obtained from guinea-pig brains. Since nerve-endings, mitochondria and synaptic vesicles gave a positive staining reaction, incubations with neuraminidase and hyaluronidase were carried out in order to achieve a differentiation. Finally, the method was applied to the membranous cytoplasmic bodies (MCB) which were isolated from the brain of a patient with Tay-Sachs disease. It was concluded that: a) Hale stain stains gangliosides also, b) gangliosides are localized in the membrane of membranous cytoplasmic bodies and also very probably in the membrane of nerve-endings, c) synaptic vesicles give a Hale-positive reaction which cannot with certainty be attributed to gangliosides, d) the outer membrane of mitochondria contains Hale-positive substances, the nature of which is not known.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Clinica Chimica Acta 185 (1989), S. 165-176 
    ISSN: 0009-8981
    Keywords: 3-Methoxy-4-hydroxyphenylglycol ; Gas chromatography ; MHPG ; Plasma
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Psychiatry Research 13 (1984), S. 359-360 
    ISSN: 0165-1781
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of neurochemistry 17 (1970), S. 0 
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract— In cerebral myelin from man, ox, rabbit, guinea pig and chicken, the amounts of proteolipid protein, basic protein and the fraction of further protein components were found to be present in a fixed ratio of 5·0: 3·5: 2·0 by weight. The molecular weights of 25,000 and 35,000 as obtained for the basic protein and proteolipid protein might indicate that cerebral myelin contains one molecule of basic protein per molecule of proteolipid protein. This fixed ratio of protein components was found to be changed in myelin from the PNS and in cerebral myelin from rat and carp, with their exceptional basic proteins. Using the polyacrylamide-gel electrophoresis it was possible to demonstrate that a homogeneous structural protein (the Folch-Lees proteolipid protein) constitutes about 50 percent of the total amount of myelin proteins in all species studied. An attempt was made to correlate myelin protein and lipid patterns from various species.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of neurochemistry 27 (1976), S. 0 
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Psychiatry Research 47 (1993), S. 187-203 
    ISSN: 0165-1781
    Keywords: Neutral serum amino acids ; circadian rhythm ; dopamine ; neuroleptic drug response ; prolactin ; schizophrenia
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Psychiatry Research 38 (1991), S. 1-12 
    ISSN: 0165-1781
    Keywords: Membranes ; adrenergic receptor ; depression ; fluidity
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Journal of Affective Disorders 9 (1985), S. 193-196 
    ISSN: 0165-0327
    Keywords: Depression ; Dexamethasone nonsuppression ; Melancholia ; Weight loss
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine , Psychology
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Journal of neural transmission 82 (1990), S. 11-29 
    ISSN: 1435-1463
    Keywords: Alpha2 adrenoceptor ; para-aminoclonidine ; clonidine ; platelets ; plasma membranes ; depression
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The binding to human platelets of3H-para-aminoclonidine (3H-PAC), an alpha2 adrenoceptor partial agonist, appears to be altered in depressed patients. We observed that the parameters of3H-PAC binding to purified plasma membranes from platelets of normal Red Cross volunteers, compare favorably to those reported for binding to normal human autopsy prefrontal cortical lysates. However, only purified plasma membranes from platelets yielded a close comparison.3H-PAC binding tointact platelets from healthy volunteers was less than 10% displaceable by an alpha2 adrenoceptor antagonist and was therefore unquantifiable. A low percent of specific binding (approx. 35%) was also observed in washed plateletlysates, and the binding was not of very high affinity (KD〉10 nM). In contrast, the binding of3H-PAC to platelet purifiedplasma membranes from healthy subjects displayed two high affinity binding sites (KD1=10.6 pM and KD2=1.2nM). These results are discussed in relation to our recent finding of elevated3H-PAC binding to platelet purified plasma membranes from depressed patients as compared to healthy subjects.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 25 (1969), S. 486-487 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Die Rattenepiphyse von Tieren, die 30 Tage lang einer ständigen Belichtung von 70 Lux Stärke ausgesetzt worden waren, wurde elektronen-optisch untersucht. Alle Tiere wiesen mitochondriale Veränderungen der Pinealozyten auf. Diese Veränderungen sind vermutlich auf den erhöhten Serotoninstoffwechsel zurückzuführen, der durch die ständige Belichtung induziert wird, da die Kontrolltiere keine derartigen Abartigkeiten zeigten.
    Type of Medium: Electronic Resource
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