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  • Neurological diseases  (1)
  • antiepileptic  (1)
  • 1
    ISSN: 1573-6903
    Schlagwort(e): GABA ; Phoshatidylserine ; antiepileptic
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract The i.p. injection in rats of GABA (740 mg/Kg) after sonication with an equal amount of phosphatidylserine (PS) has an antiepileptic effect. The injection of plain GABA has no such an effect. Blood, brain and synaptosomal accumulation of exogenous labeled GABA under the two circumstances are evaluated. In the case of GABA/PS injection there is a higher passage of the exogenous labeled neurotransmitter into the blood and brain nerve endings (synaptosomes). A higher synaptosomal accumulation of the exogenous labeled neurotransmitter is found even when GABA and PS are injected separately. Since these accumulation increases occur at a time when there is the antiepileptic effect, they seem relevant to it. Our interpretation of the chain of the events resulting in the antiepileptic action is that the phospholipid facilitates from the beginning the first passage of the exogenous neurotransmitter form the peritoneum to the blood. Then a higher passage to the brain tissue and eventually to the GABA-ergic nerve endings ensues. The brisker accumulation of the exogenous neurotransmitter in the nerve endings could be at the basis of a more efficient GABA-ergic inhibitory control in the brain.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    ISSN: 1590-3478
    Schlagwort(e): CSF ; Neurological diseases ; Macromolecules ; GABAA receptors
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Beschreibung / Inhaltsverzeichnis: Sommario Campioni di liquido cefalo-rachidiano di pazienti analizzati per casi di sospette malattie neurologiche sono stati separati nella componente macromolecolare (Peso Molecolare 〉3000 Daltons) ed in quella delle piccole molecole (PM〈3000 Daltons). La c omponente macromolecolare è stata testata per la sua possibile interferenza con l'accumulo di36Cl−, stimolato dal GABA, in “microsacs” della corteccia cerebrale di ratto. Per molte patologie non è stata rilevata alcuna interferenza. Fanno eccezione i pochi (2) casi di morbo di Parkinson; in entrambi i casi vi è una chiara stimolazione dell'attività GABAergica. Quest' ultima indicazione sembra degna di ulteriori indagini.
    Notizen: Abstract Cerebrospinal fluid (CSF) samples from patients undergoing lumbar puncture for suspected neurological diseases were fractioned into macromolecular (MW〉3000 Daltons) and small molecule components (MW〈3000 Daltons). The macromolecular component was tested for its interference with GABA stimulation of36Cl− accumulation in rat cerebral cortex microsacs. For many pathologies, no interference was apparent; an exception was two patients with Parkinson's disease in whom there were clear signs of stimulated GABA activity. This last result seems worthy of further investigation.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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