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  • 1
    Electronic Resource
    Electronic Resource
    USA/Oxford, UK : American Association for the Study of Headache/Blackwell Science Ltd
    Cephalalgia 14 (1994), S. 0 
    ISSN: 1468-2982
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: We investigated platelet 3H-imipramine (3H-IMI) binding, a putative peripheral serotonergic marker, and the activity of sulphotransferase (ST), an enzyme involved in the catabolism of catecholamines and phenolic compounds, in 14 patients suffering from migraine without aura (MWoA) and in 10 with tension-type headache (TH), as compared with a group of controls. The possible relationships between the biological parameters and clinical features were also examined. The results showed that the two groups of patients had a lower number of 3H-IMI binding sites and a lower activity of the thermolabile form of ST, which acts preferentially on monoamine substrates, than the healthy controls, with no intergroup differences. Significant correlations between psychopathological rating scales and characteristics of the illness were observed in the patients with TH. The decreased number of platelet 3H-IMI binding sites is suggestive of a presynaptic serotonergic dysfunction and confirms the involvement of 5HT in primary headaches. The reduced ST activity might produce changes in the level of sulphated biogenic amines, including dopamine and tyramine, which might have an additional role in the pathophysiology of some aspects of primary headache.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1468-2982
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The most frequently reported abnormal MRI finding in migraine is the presence of high signal white matter foci (WMF) on long TR images. Recently, WMF have been distinguished in periventricular WMF (PVF), when contiguous to ventricles, and deep WMF (DF), when far from these. DF, but not PVF, appear positively correlated with cerebrovascular risk factors and are called leukoaraiosis. In this study the MRI examination was performed in 129 consecutive migraine patients (83 of them had migraine without aura and 46 migraine with aura). In 19.3% of the migraineurs studied we observed WMF on T2 weighted images strictly localized in the deep white matter (DF). No PVF were observed. These findings were independent of the type of migraine and did not correlate with age, sex, disease duration, or frequency of attacks. The presence in a subgroup of migraineurs of leukoaraiosis (DF), for which a vascular genesis has been hypothesized, suggests that migraine could represent, a cerebrovascular risk factor in these patients.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1435-1463
    Keywords: Platelet ; monoamine oxidase B ; 3 H-imipramine binding ; Alzheimer's disease
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Several biochemical abnormalities in peripheral tissues have been reported in Alzheimer's disease (AD). With this in mind we studied platelet monoamine oxidase B (MAO B) activity and 3H-imipramine (IMI) binding in both AD patients and healthy subjects and found a significantly higher level of platelet MAO B activity and 3 H-IMI Bmax values in the AD patients. In view of the part that MAO B plays in metabolizing serotonin (5 HT) and of the relationship which exists between 3 H-IMI binding and 5 HT uptake, our results would suggest that with AD there occurs a complex dysfunction in the 5 HT system, at least at a peripheral level.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1435-1463
    Keywords: Luteinizing hormone ; Parkinson's disease ; neuroendocrinology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Plasma luteinizing hormone (LH) levels were significantly lower in 10 postmenopausal women with Parkinson's disease (PD) compared to agematched controls. The remaining hypophyseal hormones and gonadal steroids were similar in PD patients and in controls, suggesting a selective alteration of hypothalamic dopaminergic mechanisms which regulate LH secretion.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Neurological sciences 13 (1992), S. 755-760 
    ISSN: 1590-3478
    Keywords: Posttraumatic epilepsy ; prophylaxis ; phenobarbital ; head injury ; late seizures
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Sommario 390 pazienti con gravi traumi cranici sono stati trattati con phenobarbital (PB) per via orale, per un periodo di 12 mesi, al fine di verificare se tale farmaco potesse ridurre l'incidenza dell'epilessia post-traumatica (PTE). Il PB è stato somministrato per via intramuscolare, entro 24 ore dopo il trauma, alla dose di 2.5–3 mg/kg/die; dopo 5 giorni o un periodo di tempo maggiore se il coma persisteva, il farmaco è stato somministrato per via orale. Il mantenimento del livello plasmatico, quando necessario, è stato ottenuto monitorando le concentrazioni plasmatiche del farmaco che sono state mantenute tra 5 e 30 μg/ml. 293 pazienti hanno completato lo studio. Il 66% presentava un solo fattore di rischio, mentre il 34% presentava due o più fattori di rischio associati. 6 pazienti (2.04%) hanno presentato almeno una crisi epilettica entro i 12 mesi. I livelli plasmatici del farmaco al momento della crisi, variavano fra 20 e 28 μg/ml, con una eccezione di 15 μg/ml. I risultati dello studio indicano che il PB somministrato durante i primi 12 mesi dopo il trauma, anche a dosi relativamente basse, può avere un effetto profilattico sulla PTE.
    Notes: Abstract 390 patients with severe head injuries were treated with phenobarbital (PB) orally for a period of 12 months in order to determine whether this drug could reduce the incidence of posttraumatic epilepsy (PTE). An intramuscular PB dose of 2.5–3 mg/kg body weight per day was administered within 24 hours after the trauma; after 5 days, or longer if the coma persisted, the drug was administered orally. Maintenance dosage adjustments, when necessary, were based on serial plasma concentrations of the drug, sustained at between 5 and 30 μg/ml. 293 patients completed the study. 66% of these presented one risk factor, while 34% presented two or more. 6 patients (2.04%) had at least one seizure during the twelve months. Plasma drug levels at the time of the seizure, with one exception of 15 μg/ml, ranged from 20 to 28 μg/ml. The results of the study indicate that PB administered during the first twelve months after the trauma, even at relatively low doses, can have a prophylactic effect on PTE.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Neurological sciences 13 (1992), S. 169-170 
    ISSN: 1590-3478
    Keywords: Apomorphine ; dopamine ; hyperthermia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Sommario Si riporta un caso di sindrome maligna insorta in una donna di 71 anni affetta da morbo di Parkinson, dopo brusca riduzione della terapia cronica con levodopa e rapidamente risolta dal trattamento combinato con levodopa e apomorfina.
    Notes: Abstract We report a case of neuroleptic malignant syndrome (NMS) following abrupt reducation of chronic levodopa treatment in a 71 year old female parkinsonian patient. The NMS resolved within 24 hours of the addition of apomorphine to levodopa therapy.
    Type of Medium: Electronic Resource
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