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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Organometallics 11 (1992), S. 1869-1876 
    ISSN: 1520-6041
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1520-6041
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1520-6041
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of the American Chemical Society 114 (1992), S. 5464-5466 
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of the American Chemical Society 16 (1894), S. 364-372 
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1432-0568
    Keywords: Horse ; Substance P ; Calcitonin gene-related peptide ; Lung ; Neonatal
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The lungs of neonatal foals contain many nerves immunoreactive for substance P and calcitonin gene-related peptide. These nerves are closely associated with the epithelium, bronchial and pulmonary vessels and the airway smooth muscle of all intrathoracic airways, including non-cartilaginous bronchioles. Activation of sensory nerves in the respiratory epithelium could thus potentially affect, via local axon reflexes, vascular and respiratory smooth muscle in neonatal equine airways. Nerves immunoreactive for these peptides are much more widely distributed within the lung than in adult horses; they may thus play a trophic role before birth, or contribute to the post-natal adaptation to breathing.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Acta neuropathologica 6 (1966), S. 35-45 
    ISSN: 1432-0533
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Über die histochemisch und biochemisch bestimmte Lokalisation und Intensität hydrolytischer Enzyme in verschiedenen Regionen des ZNS von 3 Fällen mit Friedreichscher Ataxie und 2 normalen Kontrollbeobachtungen wird berichtet. Im Rückenmark wird ein aktiver Degenerationszustand in den Hintersträngen durch Zunahme der 5-Nucleotidase- und sauren Phosphatase-Aktivität angenommen. In den Perikaryen überlebender Nervenzellen des Nucleus dorsalis (Clarke) wurde ein beträchtlicher Verlust der Aktivität von Acetylcholinesterase, Adenosin-Triphosphatase, 5-Nucleotidase und nicht spezifischen Esterasen beobachtet. Im Kleinhirn wurde ein vollständiger Verlust der Enzymaktivität in einigen Purkinje-Zellen und Hyperaktivität mit Axondegeneration in anderen Purkinje-Zellen festgestellt. Änderungen der Acetylcholinesterase und alkalischen Phosphatase in den benachbarten Schichten der Kleinhirnrinde waren nachweisbar. Änderungen der Enzymaktivität in isolierten Bezirken des Kleinhirnmarklagers, die einen aktiven Degenerationszustand vermuten lassen, zeigen Ähnlichkeit mit den Befunden in den Hintersträngen des Rückenmarks.
    Notes: Summary The localization and intensity of hydrolytic enzymes in different regions of the brains of 3 Friedreich's ataxia cases and 2 normal controls by histochemical and biochemical methods is reported. In the spinal cord an active state of degeneration in posterior tracts was suggested by an increase in activity of 5-nucleotidase and acid phosphatase. In the surviving nerve cell bodies of the dorsal nucleus, principally, considerable loss of acetylcholinesterase, adenosine triphosphatase, 5-nucleotidase and non-specific esterase activity was observed. In the cerebellum, complete loss of enzyme activity in some Purkinje cells and hyperactivity with some axonal deformation in several other Purkinje cells was seen. Alterations in acetylcholinesterase and alkaline phosphatase in neighbouring layers were apparent; enzyme changes in isolated areas of the corpus medullare, suggesting an active state of degeneration, were similar to the posterior tracts of the spinal cord.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Acta neuropathologica 14 (1970), S. 326-337 
    ISSN: 1432-0533
    Keywords: Ataxic Rabbit ; Nucleus N. VIII ; Enzyme Histochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Bericht über enzymhistochemische Untersuchungen von Kleinhirn, Brücke, Medulla und Rückenmark von Ratten mit hereditärer Ataxie. Die Nervenzellen, vorwiegend in den Vestibularis- und Cochleariskernen sowie im Zahnkern, zeigten eine Zunahme der Glucose-6-Phosphat-Dehydrogenase-Aktivität und Abnahme von Enzymen des Krebs(Tricarbonsäure)-Cyclus, was auf eine Störung der Produktion energiegebundener Metaboliten hinweist. Die Abnahme der Enzyme des Krebs-Cyclus und der Monoaminooxydase im Neuropil der betroffenen Kerne weist darauf hin, daß eine Störung des Stoffwechsels im Neuropil einen wesentlichen Faktor darstellt. Glykogenablagerungen fanden sich stärker in den betroffenen Kleinhirnkernen und-bahnen als im Hirnstamm, während die Glykogen-Phosphorylase normale Aktivität zeigte. Eine massive Gliose lag nicht vor, doch fand sich eine starke Aktivität oxydativer Enzyme in geschwollenen Astrocyten in den betroffenen Kernen und Bahnen, die auf einen gesteigerten Stoffwechsel in diesen Zellen hinweist.
    Notes: Summary The enzyme histochemistry of the cerebellum, pons, medulla and spinal cord of rabbits with hereditary ataxia is reported. Nerve cells, mainly within the vestibular and cochlear nuclei and the dentate nuclei showed an increase in glucose 6-phosphate dehydrogenase activity and a decrease in enzymes of Krebs (tricarboxylic acid) cycle suggesting that production of energy yielding metabolites may have been impaired. The decrease in activity of the Krebs cycle enzymes and of monoamine oxidase in the neuropil of affected nuclei suggested that an alteration in metabolism within the neuropil was an important factor. Glycogen deposits were more prominent in the affected cerebellar nuclei and tracts than in the brainstem, but the enzyme glycogen-phosphorylase was generally normal. There was no evidence of massive gliosis but the intense oxidative enzyme activities within swollen hyperactive astrocytes in affected nuclei and tracts indicated increased metabolism in these cells.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Acta neuropathologica 6 (1966), S. 25-34 
    ISSN: 1432-0533
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Die Lokalisation und Aktivität wichtiger Enzyme des Glucosestoffwechsels und anderer oxydativer Enzyme wurden mittels histochemischer und biochemischer Methoden in Gehirn und Rückenmark von 3 Fällen Friedreichscher Ataxie untersucht; Kontrolluntersuchungen wurden an 2 Normalgehirnen durchgeführt. Eine Änderung vom glykolytischen zum direkten oxydativen Weg wurde in den Hintersträngen des Rückenmarks als Teil eines aktiven Degenerationszustandes festgestellt. Neuronale Enzymausfälle bestanden vorwiegend in den Nervenzellen des Nucleus dorsalis (Clarke), jedoch zeigten auch die Neurone anderer Kerne etwas herabgesetzte Aktivität glykolytischer Enzyme. Im Kleinhirn bot das Marklager ein ähnliches Schädigungsmuster der Enzymaktivität wie die spinalen Bahnsysteme. Zahlreiche Purkinje-Zellen waren fragmentiert und enzymatisch inaktiv. Es bestanden keine signifikanten Veränderungen im Enzymgehalt der Kerne des caudalen Hirnstamms und des Großhirns. Biochemische Analysen unterstützen die Ergebnisse der histochemischen Untersuchungen.
    Notes: Summary The localization and activity of important enzymes of glucose metabolism and other oxidative enzymes have been investigated by histochemical and biochemical methods in the brain and cord of 3 cases of Friedreich's ataxia; controls were run simultaneously. An alteration from the glycolytic to the direct oxidative route was seen as part of an active state of degeneration in posterior fibre tracts of the cord. Neuronal enzyme loss was mainly in the nerve cells of the dorsal nucleus (of Clarke) but cells in other nuclei showed some decreased activity of the glycolytic enzymes. In the cerebellum, the corpus medullare showed a similar pattern of enzyme alterations to that of the fibre tracts of the cord; many Purkinje cells were fragmented and enzymically inactive. There was no significant alteration in enzyme content within nuclei of the lower brain stem and in the cerebrum. The biochemical analysis supported the histochemical observations.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Acta neuropathologica 7 (1966), S. 101-110 
    ISSN: 1432-0533
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Das Verhalten der Enzyme der wichtigsten Stoffwechselkreise des Zentralnervensystems wurde in fünf Fällen von Erkrankungen des motorischen Neurons untersucht. Die überlebenden Motoneurone zeigten normales Enzymverhalten mit Ausnahme der ATPase und 5-Nucleotidase. In Nervenzellen im Zustand partieller Degeneration zeigten einige Enzyme (AChE, NADH2-Diaphorase, G6-PDH) stärkere Aktivität als andere (ATPase, 5-Nucleotidase, Monoaminooxydase). In einigen motorischen Vorderhornzellen bestand ein kompletter Enzymverlust. Auffallende Änderung der NADH2 Diaphorase-, G6-PDH-, der sauren Phosphatase — sowie der Thiamin-Pyrophosphataseaktivität wurde in hyperplastischen Astrocyten in der inneren Kapsel, im lateralen Pyramidenstrang und häufig auch im ventralen Pyramidenstrang erhoben. PAS-positives Material lag in diesen Gebieten vor. Die Befunde werden vom biochemischen Standpunkt diskutiert und mit anderen Störungen des ZNS in Beziehung zu setzen versucht.
    Notes: Summary Enzymes functioning in the major metabolic pathways of the central nervous system have been examined in 5 cases of motor neurone disease. Surviving motor nerve cells exhibited a normal response to all enzymes except ATPase and 5-nucleotidase. Nerve cells exhibiting partial degeneration showed a stronger activity of some enzymes (AChE, NADH2 diaphorase, G6-PDH) than others (ATPase, 5-nucleotidase, monoamine oxidase). Complete enzymic loss was evident in some anterior horn motor nerve cells. Striking alterations in NADH2 diaphorase, G6-PDH, acid phosphatase and thiamine pyrophosphatase activities were observed in swollen astrocytes in the internal capsule, the lateral corticospinal tract and frequently in the anterior corticospinal tract. PAS-positive material was depleted in these areas. The findings are discussed biochemically and in relation to other disorders of the central nervous system.
    Type of Medium: Electronic Resource
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