Clinical Neuroscience

[THE PREVALENCE OF WHITE MATTER ABNORMALITIES ON MAGNETIC RESONANCE IMAGES IN MIGRAINE]

TÓTH Marianna, KUNDRA Olga, KULIN Árpád

MAY 20, 2007

Clinical Neuroscience - 2007;60(05-06)

[Introduction - While examining patients with headache, abnormalities of unknown significance may quite frequently be encountered. In migraine small, subcortical, white matter abnormalities (WMAs) can be visualized by magnetic resonance images. The connection of these WMAs with the migraine is unclear, but some studies report the higher incidence of WMA in migraine. Patients and method - The authors reviewed the MR scans of their new migraine patients younger than 55 years treated in period of 15 months, and compared the data with a control group. Results - The prevalence of WMA was 10.3% among the migraineurs (78 patients without comorbidities such as hypertension, atherosclerotic heart disease, diabetes mellitus, autoimmun disorder or demyelinating disease) and it was 3.1% in the group of controls (32 persons younger then 55 years, and without migraine or other disease mentioned above). There were patients with WMA both below and above the age of 40; all of them were suffering from migraine without aura with 1 or more attack per month in variable times; none of them had smoked, the majority hadn't used oral contraceptive, and only a few of them used triptan or ergotamin. Conclusion - The data presented here shows that there is a relationship between migraine and WMA. The association of WMA and the risk of following stroke is not cleared. There are well known studies analysing the prevalence of silent infarction too, but we need a long prospective study to answer this question exactly.]

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[NOVEL CELL-BIOLOGICAL IDEAS DEDUCIBLE FROM MORPHOLOGICAL OBSERVATIONS ON “DARK” NEURONS REVISITED]

GALLYAS Ferenc

[The origin, nature and fate of ”dark“ (dramatically shrunken and hyperbasophilic) neurons are century-old problems in both human and experimental neuropathology. Until a few years ago, hardly any cell-biological conclusion had been drawn from their histological investigation. On the basis of light and electron microscopic findings in animal experiments performed during the past few years, my research team has put forward novel ideas concerning 1. the nature of ”dark“ neurons (malfunction of an energystoring gel-structure that is ubiquitously present in all intracellular spaces between the ultrastructural elements), 2. the mechanism of their formation (non-programmed initiation of a whole-cell phase-transition in this gel-structure), 3. their capability of recovery (programmed for some physiological purpose), 4. their death mode (neither necrotic nor apoptotic), and 5. their relationship with the apoptotic cell death (the gel structure in question is programmed for the morphological execution of ontogenetic apoptosis). Based on morphological observations, this paper revisits these ideas in order to bring them to the attention of researchers who are in a position to investigate their validity by means of experimental paradigms other than those used here.]

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[PROGRESSIVE MULTIFOCAL LEUKOENCEPHALOPATHY]

PÁL Endre, ASCHERMANN Zsuzsanna, GÖMÖRI Éva, KOVÁCS Gábor Géza, SIMON Gábor, MARÓDI László, KOMOLY Sámuel, ILLÉS Zsolt

[Progressive multifocal leukoencephalopathy is a rare disease caused by the reactivation of an opportunistic agent, JC virus almost in every cases in immunodeficient conditions. The disease is characterized by multifocal demyelinating lesions of the central nervous system and causes death within a few months. The authors report two patients: a 67 year-old male treated because of chronic lymphoid leukemia, and a 19 year-old male having a hereditary immunodeficiency, X-linked hyper IgM syndrome. In both cases continuously progressive right, later both hemispheric signs were detected. Cerebrospinal fluid was not helpful. Brain MRI showed bilateral large, white matter lesion. The progression was not influenced by the treatment, finally both patient died ten and six weeks after the appearance of first complaints. The diagnosis was confirmed by brain biopsy and autopsy in both cases. Our cases demonstrate that progressive multifocal leukoencephalopathy can develop in various immunodeficiencies.]

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[SLEEP DISORDERS IN PARKINSON SYNDROMES]

SZŰCS Anna, KOVÁCS Gábor Géza, NARULA Lalit, HALÁSZ Péter

[About 90% of neurodegenerative diseases with parkinsonism are associated with sleep disorders including daytime sleepiness, sleep-related breathing disorders and parasomnias. It is hard to define what ratio of insomnia and daytime hypersomnia is caused by the antiparkinsonian tratment, by the somatic and mentalemotional symptoms of the neurodegenerativ disease and by the neurodegenerative brain process itself. Recent research suggests that the latter group is more important than expected. In Parkinson syndromes the structures included in sleep regulation - mainly within the brainstem - are also affected resulting in specific sleep disorders being the primary biological symptoms of these diseases. The recently described parasomnia - REM sleep behavior disorder - has a specific significance in this respect: it may prevent by several years a high ratio of the parkinsonian disorders - especially synucleinopathies - offering the possibility of prevention by identifying the affected individuals. There seems to exist a similar although less clarified association between daytime sleepiness and Parkinson disease. Analysing the behavior of the orexin system in neurodegenerative diseases may help to learn more about this, recently described neurohumoral system and may clear the association of narcolepsy with neurodegeneration. By understanding the associations of parkinsonian disorders and sleep disorders new therapeutical strategies may be invented and may offer new aspects to understand the mechanism of them.]

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The syndrome of headache with neurologic deficits and cerebrospinal fluid lymphocytosis (HaNDL) is a rare entity. This disease has been related to migrainous headaches. It is a benign, self-limited disorder, which is characterized by fluctuating neurological symptoms and cerebrospinal fluid lymphocytosis. We describe a case of a 47 years old man with acute onset of headache and aphasia. Cerebrospinal fluid analysis revealed a lymphocytic pleocytosis (25 cells/μl, 100% lymphocytes). Electroencephalogram showed moderate slow rhythm in the left hemisphere, with temporoparietal predominance, and without epileptiform activity. His blood tests as well as magnetic resonance imaging (MRI) results were normal. With the diagnosis of HaNDL syndrome the patient was accepted in the Department of Neurology and discharged with full recovery.

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