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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Development genes and evolution 185 (1978), S. 79-94 
    ISSN: 1432-041X
    Keywords: Monoamines ; Histofluorescence ; Regeneration ; Newt
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Newt forelimb regenerates were studied at various stages of development using the histofluorescent method of Falck and Hillarp. A green formaldehyde-induced fluorescence was found in nerve fibres, large dendritic cells, skin gland cells and skin gland cell secretions. To ascertain the nature of the fluorescent material, animals were submitted to treatments with L-dopa, nialamide, benserazide and reserpine, used separately or in combination and administered before cutting off the regenerates. The modifications of the fluorescence after the various treatments confirmed the monoaminic nature of the fluorophores. Catecholaminic fibres were numerous in tissues of fast-growing stages while in dedifferentiated cell areas as well as in prochondral cell condensations and in cartilage they were completely absent. Fluorescent dendritic cells that have never been described before in regenerating limbs were observed and, from their localisation and cytological appearance, classed as promelanophores (or melanoblasts).
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 45 (1989), S. 159-161 
    ISSN: 1420-9071
    Keywords: Neuropeptides ; immunohistochemistry ; human brain
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Floating sections from human brains immersed for more than forty years in formalin, or from brains freshly fixed for a short time are treated by KMnO4-Pal's modified solutions to suppress the endogenous peroxidase activity before using the peroxidase-antiperoxidase method (PAP), or to remove the autofluorescence of lipofuscin, which is very intense in brains from old patients, before using the immunofluorescence method. Following this, immersion of sections in NaOH and H2O2 allows for the demasking of antigenic sites. These treatments enhance the immunolabelling considerably, with results comparable to those obtained with freshly fixed tissues, and facilitate the discrimination between specifically and unspecifically stained structures.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Acta neuropathologica 82 (1991), S. 483-487 
    ISSN: 1432-0533
    Keywords: Leukodystrophy ; Demyelinating disease ; Lipopigment
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The present report documents a family with three cases in two successive generations of pigmentary orthochromatic leukodystrophy (POLD). The clinical features of these cases and histochemical and ultrastructural investigations of two of the brains from successive generations are discussed. A review of the familial cases of POLD reported in the literature is also presented. Transmission of these cases was by a dominant inheritance. Onset of the clinical symptoms occurred at 42 to 54 years of age; duration of the disease was from 2–11 years, and death occurred at 45 to 57 years of age. Clinical manifestations of all three cases were severe headaches; bilateral pyramidal, pseudobulbar, cerebellar, and frontal release signs; gait disturbances; euphoria, or apathy; epileptic seizures; and dementia. The neuropathological pattern consists of slight cerebral atrophy, brownish discoloration of the cerebral white matter with demyelination and severe gliosis, sparing the sub-cortical U fibers; presence in the macrophages of lipid pigment granules that are sudanophilic, non metachromatic, and PAS and iron positive. The electron microscopic pattern of the lipid pigment in the macrophages is that of ceroid: electron-dense, membrane-bound intracytoplasmic lysosomes with curvilinear and/or fingerprint profiles.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Acta neuropathologica 13 (1969), S. 267-275 
    ISSN: 1432-0533
    Keywords: Leukoencephalopathy ; Cystic Degeneration ; Edema Posttraumatic ; Enlargement of Perivascular Spaces
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Demonstration einer einseitigen kavitären Leukoencephalopathie: Ein Mann, der zwei Schädeltraumen mit Intervallen von mehreren Jahren erlitten hatte, entwickelte eine linksseitige Halbseitensymptomatik mit Schwäche, Spastizität und leichter Demenz. Das Gehirn bot eine Kontusion am linken Frontalpol und ausgedehnte Zystenbildungen im rechten Hemisphärenmark. Die zystischen Veränderungen betreffen das gesamte Centrum ovale mit geringer frontooccipitaler Verringerung und reichten bis in das Windungsmark. Die Zystenwände sind durch markhaltige Faserzüge gebildet, die intakte Axone aufweisen. Die Höhlen sind innen von mesenchymalen Fäden perivasaler Herkunft ausgekleidet und enthalten fast immer Gefäße und Fettkörnchenzellen. Die Pathogenese dieser kavitären Leukoencephalopathie wird mit einer Markschädigung in Verbindung gebracht, die als Folge eines chronischen posttraumatischen Ödems, möglicherweise auf Grund einer konstitutionellen Schwäche gedeutet wird. Es resultiert eine extreme Erweiterung der perivasculären, intraadventitiellen Räume. Die Schädigung der weißen Substanz durch diesen Prozeß scheint weitgehend elektiv mit Affektion der intrahemisphärischen Assoziationsfasern bei Verschonung der langen absteigenden Bahnen und der Kommissuren.
    Notes: Résumé Présentation d'une observation de leucoencéphalopathie cavitaire unilatérale. Un homme qui a subi deux traumatismes à plusieurs années d'intervalle a présenté une latéralisation gauche avec faiblesse, phénomènes spastiques et légère démentification. Au cerveau, contusion au pôle frontal gauche et cavitations massives de la substance blanche à l'hémisphère droit; le processus cavitaire intéresse l'ensemble du centre ovale en diminuant légèrement dans le sens fronto-occipital et pénètre aussi dans l'axe blanc des circonvolutions. Les parois des cavités sont formées de faisceaux myélinisés dont les cylindraxes sont conservés; les cavités sont tapissées à l'intérieur par des filaments mésenchymateux d'origine périvasculaire et contiennet presque toujours des vaisseaux et des corps granulo-graisseux anciens. Le corps calleux, la capsule interne et le faisceau pyramidal sont indemnes. La pathogenie de cette leucoencéphalopathie cavitaire serait en relation avec une destruction de la substance blanche provoquée par l'oedème chronique post-traumatique, probablement sur un terrain de fragilité constitutionnelle; il en résulte un élargissement extrêmement important des espaces péri-vasculaires intra-adventiciels de Virchow-Robin. La destruction de la substance blanche par ce processus semble être sélective et toucher les fibres d'associations intrahémisphériques en épargnant les voies longues descendantes et commissurales.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Acta neuropathologica 83 (1992), S. 461-468 
    ISSN: 1432-0533
    Keywords: Neuronal ceroid lipofuscinosis ; Kufs' disease ; Ceroid lipopigment ; Storage disease
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Three cases of the late adult form of neuronal ceroid lipofuscinosis (NCL) are reported. Two of these are siblings with a late clinical onset at ages 26 and 44 years. The third case, sporadic, has the oldest reported age for the onset of NCL, at 63 years and may be regarded as the first example of the “presenile” form of NCL. The clinical, morphological, histochemical, ultrastructural and genetic features of these three cases are discussed. The literature of the clinicopathological NCL cases with an onset at age of 25 and older is reviewed. The clinical and morphological differences between the late adult form and the presenile form of NCL as well as the difficulties in making the diagnosis are discussed.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 26 (1970), S. 381-383 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary An enzymatic barrier for Dopa exists at the level of the cerebral capillaries which changes Dopa into Dopamine by means of endothelial decarboxylase. It is abolished by a decarboxylase inhibitor. Its intensity is weaker in structures containing Dopamine (Striatum, Locus Niger). Neurones of the Raphé containing serotonin can be charged with catecholamines. There are close contacts between neurones and capillaries.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 0009-8981
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1435-1463
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Previous studies have shown that the dopamine content in the caudate nucleus decreases in Parkinson's disease. The present study has corroborated these findings in man andin vivo. In addition for the first timein vivo presence of dopamine in the non parkinsonian human nucleus has been shown morphologically with histofluorescence method. In the parkinsonian patients the content of dopamine in the caudate nucleus was raised higher when L-Dopa treatment was combined with a decarboxylase inhibitor than when L-Dopa was given alone.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Durch Histofluoreszenz-Methode für Monoamine wurde nachgewiesen, dass die Abnahme der grünen Fluoreszenz in den Noradrenalin-Endungen des Cortex und Hypothalamus im Rattenhirn durch α-Methyl-Paratyrosin verstärkt wird, was vermuten lässt, dass dieses Tripeptid die Freisetzung und Umkehrung des Noradrenalin erhöht.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 24 (1968), S. 130-131 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Im Pallium und im Nucleus caudatus des Rattenhirns verstärkt der Decarboxylasehemmer Ro 4-4602 den durch Dopa bedingten Anstieg von Dopamin. Mit einer fluoreszenzmikroskopischen Methode wird gezeigt, dass Dopamin wahrscheinlich im Parenchym und nicht in den Kapillaren des Gehirns akkumuliert.
    Type of Medium: Electronic Resource
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