Clinical Neuroscience

[Progressive myoclonus epilepsy - A review and case histories]

JANSZKY József1, HALÁSZ Péter1, PERÉNYI József1, SISKA Éva1, RÁSONYI György1

MARCH 20, 1997

Clinical Neuroscience - 1997;50(03-04)

[Progressive myoclonus epilepsy (PME) syndrome is a heterogeneous entity underlain by rare genetic diseases. The most frequent origins of progressive myoclonus epilepsy are: Unverricht-Lundborg disease, Lafora's disease, ceroid lipofuscinosis, MERRF (myoclonus epilepsy with ragged red fibers) and sialidosis. Action myoclonic jerks, epileptic seizures, mental deterioration, neurological impairments are the four main symptoms of PME syndrome. Nowadays in more and more cases a causal diagnosis is possible in the PME syndrome. In this paper clinical data and findings of our 10 outpatients suffering from PME were analysed retrospectively. Electrophysiological, neuroimaging and histological examinations were performed. On the basis of the findings of the 10 patients 6 suffered from Unverricht-Lundborg disease, 1 from Lafora disease and 1 from MERRF In 2 patients we were not able to find specific diagnosis. Among our patients gypsy nationality occurs in a relatively large proportion and we know of more gypsy PME cases under care of other centres. It may raise the question whether Hungarian gypsies suffer from PME more frequently. This paper - to our knowledge – is the first study dealing with a group of PME cases in Hungary.]


  1. Országos Pszichiátriai és Neurológiai Intézet, Budapest



Further articles in this publication

Clinical Neuroscience

[Reoperation of recurrent supratentorial lobar gliomas (astrocytoma, glioblastoma)]

ÁFRA Dénes, SIPOS László

[Hundred-nine patients with recurrent supratentorial gliomas were reoperated during the last 15 years at the National Institute of Neurosurgery, Budapest. The patients were grouped according to the WHO classification based on the first histology. Fifty patients with low grade (A 2), 30 with anaplastic astrocytoma (A 3) and 29 with glioblastoma multiforme (GM) were reoperated on. Nine patients with low grade astrocytoma were irradiated following the first operation. They survived 5 to 14 months (median value 7 months). Those 22 patients who were irradiated after the reoperation survived longer despite the malignant tranformation of their tumour. The median survival time was 24 months. Twenty-four patients with anaplastic astrocytoma received radiotherapy after the first operation in a total dose from 50 to 60 Gy. Six patients did not give their consent. The median survival after the second operation was 5.5 months. Four patients also received chemotherapy and 1 of them is still alive 4 years after the reoperation. Out of the 29 patients operated on with glioblastoma 20 were irradiated. The median survival after the reoperation was 3 months, and only a few patients lived longer than 6 months. Chemotherapy itself did not influence the survival time significantly in either group. The survival time was influenced significantly by the first histology. Radiotherapy after the reoperation prolonged the survival time significantly, especially in the group of patients with primary low grade astrocytoma. Reoperation of patients with malignant astrocytoma who were irradiated immediately after the first operation extended the survival time slightly.]

Clinical Neuroscience

[Comparative human immunohistochemical investigations of peptidergic innervation of embryonal and adult cerebral blood vessels]

BÜKI András, DÓCZI Tamás, HORVÁTH Zoltán, FÜRTÖS András

[Peptidergic fibres innervating human embryonic and adult cerebral blood vessels were screened for calcitonine gene-related peptide, neuropeptide-Y and substance-P immunopositive fibres, the mediaadventitia border displayed a network-like fibre arrange ment. There was no significant difference either in the distribution of the individual peptidergic fibres or in the age-dependent appearance of peptidergic networks. On the basis of these results it seems to be unlikely that the different clinical course of juvenile and adult subarachnoid haemorrhages could be the result of an age specific difference of peptidergic fibre distribution influencing the neurogenic mecha nisms of cerebral autoregulation.]

Clinical Neuroscience

[Statistical evaluation and pathological significance of the incidence of corpus amylaceum]


[Objective: Semiquantitative evaluation of the corpus amylaceum (polyglucosan body) was carried out by a method reported before on a 1407 autopsy - partly biopsy - material. Design: The present report contains the data of the occurrence of corpus amylaceum in different disease groups demonstrated in tables expressed in numbers and percentage evaluated by homogenity examination. Setting: The manifold neuropathological examination enabled the reaching of some implications of clinical significance too. Material and method: The material involved a great number of cases not reported before. The cases were classified according to their ages and different diseases as well as a new grading system of quantitative evaluation of the frequency of corpus amylaceum in various localizations. Main outcome measures: The most important aspects were the examination of the predilection sites, the elucidation of the development of corpus amylaceum and occurrence in different conditions and diseases. Results: The method and examination permitted drawing conclusions as follows: 1. The chronic, recurring vascular-barriere disturbances appeared significant in the formation of corpus amylaceum. - 2. There was not an expressive difference between the ischemic and hemorrhagic vascular diseases considering the number of corpus amylaceum nor did more corpus amylaceum occur in Alzheimer's disease than in aged. - 3. Greater amount of corpus amylaceum may be found in some spinal cord lesions. – 4. The formation of corpus amylaceum was not observed in the regions of astrocytic gliosis (e.g. postraumatic) or in astrocytomas. This finding needs further study. - 5. The linear correlation between age and the increased quantity of corpus amylaceum may also be proved statistically. Conclusions: It deserves particular attention that more mechanisms may play a role in the formation of corpus amylaceum such as the insufficiency of astrocytes in the utilization of glucose which may be associated with accumulation of some carbohydrate polymers and glycogen. The increased volume of cerebrospinal fluid in the predilection sites is also an important factor. The spinal cord proved to be a prominent predilection site, where the great amount of corpus amylaceum occurred in some diseases which may be explained by the increased quantity of stress proteins. The final conclusion is that the corpus amylaceum has a pathog nostic significance, but it has a tendency for higher occurrence in some conditions.]

Clinical Neuroscience

[Moyamoya disease with partial epilepsy and cerebral infarct in early childhood]

NEMES András, LAZÁNYI Zoltán, NAGY István

[An 8-month-old infant with initial partial epileptic seizure is described in whose case moyamoya disease and a form of infarct were established. In connection with the case the possible reasons for the pathological picture, clinical characteristics and diagnosis are detailed. Attention is called to the fact that stroke can be considered as a possible etiological factor while clarifying the etiology of a partial epileptic seizure in infancy.]

Clinical Neuroscience

[Recent data for the pathobiochemistry of tension-type headache]

TAJTI János, SZOK Délia, VÉCSEI László

[The most prevalent of the independent headache disorders (30%) is tension-type headache (other types: migraine 4-10%, cluster 0.04-2.4%). These patients represent 50-90% of the patients in the "Headache Outpatient Clinics". This justifies a review of the latest biochemical data aimed at elucidating the pathomechanism of the disease. According to the criteria of the International Headache Society (IHS), two main forms of tension-type headache are distinguished. Tension-type episodic headache: fewer than 15 attacks per month, but at least 10 attacks lasting from 30 minutes to 7 days. Typically, they are pressing, tight, but not throbbing. Mild to moderate pain, bilateral, around the temples or forehead, pan-like, not increasing with normal physical activity, not accompanied by photophobia or phonophobia. Chronic tension-type headache: more than 15 attacks of headache per month, lasting all day and with features similar to the episodic form, for at least 6 months. In this summary, we first present the main experimental findings and then the conclusions that can be drawn from them. ]

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Clinical Neuroscience

Lower / upper extremity F-wave ratio for detecting early diabetic neuropathy


Results of conventional nerve conduction studies may be within normal limits in early diabetic neuropathy. Previous studies demonstrated that F-wave latency should be used to detect this early neuropathic process. The aim of this study is to evaluate the sensitivity of lower/upper extremity F latency ratios in detecting the early neuropathy in patients with diabetic neuropathic pain. 44 patients with diabetic neuropathic pain (DNP) and 44 control subjects whose both conventional nerve conduction studies and F-wave latencies were within normal limits were included to the study. We compared the nerve conduction parameters and lower/upper extremity (tibial/ulnar) F latency ratios of the groups. Tibial F latency was significantly prolonged and tibial/ulnar F latency ratio was significantly higher in DNP group. Our results support that F-waves are useful for detecting early diabetic neuropathy and suggest that comparison with a control group will demonstrate a difference even when the individuals’ F-wave latencies are within the normal limits. The difference was significant for tibial but not for ulnar F latency values supporting the length dependent involvement. The tibial/ ulnar F-wave latency ratio was significantly higher in the DNP group, suggesting that it might also be useful to detect early neuropathy and to demonstrate that the underlying process was predominant in lower extremity. Further studies may provide additional information about the utility of this ratio for detecting early neuropathy even when F-wave latencies are within normal limits.

Clinical Neuroscience

[Epidemiology, cost and economic impact of cerebral palsy in Hungary]

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[Dialysis service in coronavirus pandemic]

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