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Query: UMLS:C0027066 (myoclonus)
 4,275 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

We performed a clinicopathological study on 12 autopsied cases of dentatorubropallidoluysian atrophy. They were divided into 3 groups according to the age at onset: juvenile type (6 cases), early adult type (4 cases) and late adult type (2 cases). In juvenile type showing progressive myoclonus epilepsy (PME) syndrome, degeneration of the globus pallidus was more marked than that of the dentate nucleus. Mild to moderate atrophy was seen in the brain stem and spinal cord. In early adult type showing milder symptom of myoclonus and epilepsy, the globus pallidus and dentate nucleus were equally degenerated to various extents in most cases. Atrophy of the brain stem and spinal cord was mild to moderate in degree. In late adult type without PME syndrome, degeneration of the dentate nucleus was more marked than that of the globus pallidus. The brain stem and spinal cord were severely atrophic. On the other hand, the cases showing severe dentate lesion had a tendency to show severe atrophy of the brain stem and spinal cord. We consider that development of myoclonus, epilepsy and choreoathetoid movement in DRPLA patients has close relation to the extent of not only degeneration of the globus pallidus and dentate nucleus, but also atrophy of the brain stem and spinal cord.
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PMID:[Dentatorubropallidoluysian atrophy (DRPLA): comparative pathological study on clinical groups classified into juvenile, early adult and late adult types]. 156 29

We report a patient with familial myoclonus showing an extremely benign clinical course. The patient was a 70-year-old woman, who first noticed shaking of hands at age of 25. The symptom did not worsen for more than 40 years. She visited our hospital at the age of 70 because of disturbance in chores because of worsening of her hand shaking in the past one year. A family history showed that 4 members had similar symptoms and that the two were afflicted with fits of loss of consciousness. On neurologic examination, rhythmic myoclonic jerks were noted in all the extremities, more in the upper limbs, both at rest and during action. Tandem gait was mildly disturbed. The remainings of neurologic examination were normal. SEP and jerk-locked back averaging provided evidence of cortical myoclonus. EEG showed multifocal polyspike discharges. Gene analysis for DRPLA, pyruvate and lactate levels in serum and the cerebrospinal fluid, serum amino acid levels, and CSF HVA and 5-HIAA levels were all normal. No brain atrophy was noted in cranial MRI. Myoclonus was markedly reduced after administration of clonazepam. The clinical features and electrophysiological data of our patient are consistent with the clinical diagnosis of familial essential myoclonus and epilepsy/benign adult familial myoclonic epilepsy.
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PMID:[A case of familial myoclonus showing extremely benign clinical course]. 980 89

Pathology and associated clinical symptoms of hereditary dentatorubral-pallidoluysian atrophy (H-DRPLA) which was established as a new inherited neurodegenerative disease in 1982 are described. Obligatory lesions in the central nervous system combine with degeneration of the dentatorubral and pallidoluysian pathway, and occasional degenerative lesions are found in the cerebral white matter, putamen, Goll's nucleus of the medulla oblongata, and lateral corticospinal and Goll's tract of the spinal cord. The main clinical symptoms are myoclonus, epilepsy, dementia or mental retardation, cerebellar ataxia and choreoathetosis. Furthermore, newly developing aspects in the pathology of H-DRPLA following the discovery of the gene locus of H-DRPLA in 1994 are briefly described.
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PMID:Hereditary dentatorubral-pallidoluysian atrophy. 1103 86