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  • Cluster headache  (1)
  • Immunology  (1)
  • NOx abatement  (1)
  • 1
    ISSN: 1572-879X
    Keywords: NOx abatement ; Cu-ZSM-5 ; Cu-Y zeolite
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract NO decomposition was studied on Cu-ZSM-5 (Cu exchange extent from 23 to 210%) and Cu-Y (Cu exchange extent from 5 to 105%) catalysts at 773 K. The results show that the activity (NO molecules decomposed per gram of catalyst per second) increases by roughly 100-fold when the extent of exchange with copper in the ZSM-5 framework increases from 80 to 100%. This behaviour shows that not all Cu sites are equivalent in their decomposition activity. Cu-ZSM-5 samples prepared with either H-ZSM-5 or Na-ZSM-5 show the same activity pattern.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1590-3478
    Keywords: Epilepsy ; Benzodiazepine receptors ; Immunology ; DBI
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Sommario Recenti dati sperimentali hanno evidenziato che i recettori periferici delle benzodiazepine (PBR) possono ricoprire un ruolo nell'epilessia e nell'azione dei farmaci antiepilettici. Poiché i PBR sono presenti anche sui linfociti in circolo, dove è stato dimostrato che possono interagire con i farmaci antiepilettici, abbiamo ricercato le possibili modificazioni di questi recettori e del loro ligando endogeno diazepam binding inhibitor (DBI) in linfociti di pazienti epilettici trattati con farmaci diversi. La densità recettoriale dei PBR risultava aumentata del 50–80% in pazienti trattati con carbamazepina, fenobarbital, ed acido valproico, rispetto ai controlli ed ai pazienti epilettici non trattati. Le concentrazioni di DBI risultavano significativamente aumentate nei linfociti di pazienti epilettici non trattati e, mostravano solo un limitato aumento dopo terapia. È tutt'ora in discussione la possibilità che le modificazioni di PBR e DBI nei linfociti di pazienti epilettici possano essere correlate alle alterazioni immunologiche segnalate in questi pazienti e/o possano essere considerate come possibili indicatori di modificazioni neurochimiche presenti nel sistema nervoso centrale.
    Notes: Abstract Recent experimental evidence has suggested that peripheral benzodiazepine receptors (PBR) may play a role in epilepsy and antiepileptic drug action. Since PBR are also present in circulating lymphocytes, and may interact with anticonvulsant drugs, this study was designed to look for possible modifications of these receptors and their endogenous ligand diazepam binding inhibitor (DBI) in the lymphocytes of epileptic patients treated with various drugs. PBR levels were 50% to 80% higher in patients treated with carbamazepine, phenobarbital and valproic acid than in controls and untreated epileptics. DBI levels were significantly increased in the lymphocytes of untreated patients, and showed only a slight further increase after anticonvulsant therapy. The possibility that PBR and DBI modifications in the lymphocytes of epileptic patients may be linked to the immunological alterations reported in these patients and/or may represent possible markers of neurochemical modifications in the central nervous system is discussed.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1590-3478
    Keywords: Cluster headache ; bypass surgery
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Sommario A distanza di oltre due anni da un intervento di bypass tra aorta ascendente ed arteria anonima un uomo di 51 anni con cefalea a grappolo non ha più riferito ulteriori episodi algici. Viene avanzata l'ipotesi che l'intervento abbia svolto un ruolo causale nella remissione di tali episodi.
    Notes: Abstract A 51-year-old man with cluster headache has been free from cluster attacks for over two years following ascending aorta/innominate artery bypass surgery for correction of an atherosclerotic narrowing at the origin of the innominate artery. Surgery may have been a causal factor in the remission of these attacks.
    Type of Medium: Electronic Resource
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