Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0013421 (dystonia)
 8,418 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

We report a family with early-onset deafness and progressive dystonia exclusively involving males over two successive generations. There is also evidence of cognitive impairment and corticospinal tract involvement. The pedigree suggests an X-linked inheritance. A similar family was originally described by Scribanu and Kennedy. Tranebjaerg et al. have recently reported two other families with linkage to Xq22 and also proposed a novel X-linked candidate gene. These findings support the existence of a distinct neurodegenerative syndrome principally characterized by early-onset deafness and progressive dystonia. Neuropathology of one case showed a mosaic pattern of neuronal loss and gliosis in the caudate and putamen suggesting that this pattern is not restricted to XDP or Lubag.
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PMID:X-linked Dystonia-Deafness syndrome. 953 45

Sex linked dystonia parkinsonism (XDP), also referred to as "lubag" in American literature, was described in 1975 occurring endemically in Panay, Philippines. It is an adult onset, sex linked, predominantly male, severe, progressive movement disorder with high penetrance and a high frequency of generalisation. The movement disorder is characterised by dystonic movements, usually starting in the 3rd or 4th decade, spreading to generalisation within two to five years. The dystonia coexists or is replaced by parkinsonism usually beyond the 10th year of illness. No treatment has been found to be effective. Neuroimaging shows caudate and putamenal atrophy in patients reaching the parkinsonian stage. Neuropathology reveals pronounced atrophy of the caudate and putamen, mostly in the cases with long standing illness. The sex linked pattern of inheritance has been established. Genetic studies have located the affected gene (DYT3) to Xq13.1, with one group mapping the XDP gene to a < 350 kb locus in the DXS 7117-DXS 559 region.
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PMID:Sex linked recessive dystonia parkinsonism of Panay, Philippines (XDP). 1172 10

Sex-linked dystonia parkinsonism (XDP) was reported by Lee et al. in 1975 occurring endemically in Panay, Philippines. It is an adult onset, sex-linked, predominantly male, severe, progressive movement disorder with high penetrance and a high frequency of generalization. The movement disorder is characterized by dystonic movements usually starting in the third or fourth decade, focal at the onset, spreading to generalization within 2-5 years. The dystonia co-exist or is replaced by parkinsonism usually beyond the 10th year of illness. As of June 2001, 376 XDP cases have been registered. One hundred and fifteen cases have died. The prevalence of XDP in the island of Panay is 5.24 per 100,000; 0.34/100,000 in the general population. The prevalence varies in the different provinces; it is highest in Capiz at 18.88/100,000, 7.46/100,000 in Aklan, 1.28 in Iloilo and 0.83 in Antique. The 376 cases are from 188 families and 92% of cases have positive family history. Ninety-nine percent of the cases are males. The mean age of onset is 39.48 years. Duration of illness is 12.95 years. Ninety-four percent of patients initially manifest with dystonic symptoms, while only 6% present with Parkinsonian traits. Among those presenting with dystonia, the initial presentation is in the lower extremities in 33%, craniofacial in 27%, cervical and shoulder in 25%, upper extremities in 14%, and trunk in 1%. Regardless of the site of onset, the dystonia spreads in 98% and generalizes within 5 years in 84%. Neuroimaging (magnetic resonance imaging, MRI) was done in 16 patients. In the patients who have just manifested the disease usually when dystonia predominates and parkinsonism is absent. MRI showed minimal atrophy of the caudate and putamen or subtle putaminal signal abnormality. In the late course, where Parkinsonism predominates, severe atrophy of the caudate and putamen as well as marked increase in signal abnormality are seen. There are six autopsied cases of XDP. Neuropathology revealed marked atrophy of the caudate and putamen mostly in the cases with longstanding illness. The sex-linked pattern of inheritance has been established. Genetic studies have located the affected gene (DYT3) to Xq13.1. Nemeth's group has mapped the XDP gene to a <350 kb locus in the DXS 7117-DX 559 region. To date, no treatment has been proven consistently effective.
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PMID:The natural history of sex-linked recessive dystonia parkinsonism of Panay, Philippines (XDP). 1221 20

We report on an Italian family in which three brothers and their maternal grandfather had a generalized early-onset dystonia with mild parkinsonian signs. Genetic testing excluded the rapid-onset dystonia-parkinsonism locus (DYT12; OMIM*128235), autosomal recessive Parkin locus (PARK2; OMIM *602544), and DYT1 dystonia. Three affected siblings were found to share an identical haplotype at the X-linked dystonia-parkinsonism locus (XDP; Lubag; OMIM*314250). This haplotype differed from the haplotype observed in Filipino patients, ruling out the hypothesis of a common underlying mutation. In addition, direct sequencing analysis of the putative disease causing changes observed in Filipino patients were not found in the Italian patients. The condition we describe could be a newly recognized dystonia syndrome with parkinsonism.
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PMID:A novel family with an unusual early-onset generalized dystonia. 1539 42

Dystonia is a neurological syndrome characterized by sustained muscle contractions that produce repetitive twisting movements or abnormal postures. X-linked recessive dystonia parkinsonism (XDP; DYT3; Lubag) is an adult-onset disorder that manifests severe and progressive dystonia with a high frequency of generalization. In search for the anatomical basis for dystonia, we performed postmortem analyses of the functional anatomy of the basal ganglia based on the striatal compartments (ie, the striosomes and the matrix compartment) in XDP. Here, we provide anatomopathological evidence that, in the XDP neostriatum, the matrix compartment is relatively spared in a unique fashion, whereas the striosomes are severely depleted. We also document that there is a differential loss of striatal neuron subclasses in XDP. In view of the three-pathway basal ganglia model, we postulate that the disproportionate involvement of neostriatal compartments and their efferent projections may underlie the manifestation of dystonia in patients with XDP. This study is the first to our knowledge to show specific basal ganglia pathology that could explain the genesis of dystonia in human heredodegenerative movement disorders, suggesting that dystonia may result from an imbalance in the activity between the striosomal and matrix-based pathways.
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PMID:Functional anatomy of the basal ganglia in X-linked recessive dystonia-parkinsonism. 1598 25

Pathological findings in dystonia have been unclear. X-linked recessive dystonia-parkinsonism (XDP, DYT3), endemic in the Panay island, the Philippines, is characterized by the clinical onset with dystonia followed by parkinsonism. It provides a unique opportunity to explore the anatomical basis of dystonia, because it has discernible pathological changes even at its early phase of dystonia. After extensive searches for the anatomical basis in XDP, we found selective loss of striosomal neurons in the striatum in dystonic patients' brain. Because striosomal neurons inhibit nigrostriatal dopaminergic neurons via GABAergic innervation, the striosomal lesion could account for dopamine excess in the striatum, which in turn causes a hyperkinetic state or dystonia. We also identified the causative gene as one of the general transcription factor genes, TAF1. XDP has certain similarities to Huntington disease not only in pathological and clinical findings, but also the molecular mechanism, which disturbs expression of genes essential for striatal neurons, such as DRD2. Therapeutic intervention may become possible through pharmacological measures that affect gene expression.
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PMID:Molecular dissection and anatomical basis of dystonia: X-linked recessive dystonia-parkinsonism (DYT3). 1636 15

Pathological findings in dystonia have been unclear. X-linked recessive dystonia-parkinsonism (XDP, DYT3), endemic in the Panay island, the Philippines, is characterized by the clinical onset with dystonia followed by parkinsonism. It provides a unique opportunity to explore the anatomical basis of dystonia, because it has discernible pathological changes even at its early phase of dystonia. After extensive searches for the anatomical basis in XDP, we found selective loss of striosomal neurons in the striatum in dystonic patients' brain. Because striosomal neurons inhibit nigrostriatal dopaminergic neurons via GABAergic innervation, the striosomal lesion could account for dopamine excess in the striatum, which in turn causes a hyperkinetic state or dystonia. We also identified the causative gene as one of the general transcription factor genes, TAF1. This abnormality markedly reduced the expression of dopamine D2 receptor gene (DRD2) in neurons. XDP has certain similarities to Huntington disease not only in pathological and clinical findings, but also the molecular mechanism, which disturbs expression of genes essential for striatal neurons, such as DRD2. Therapeutic intervention may become possible through pharmacological measures that affect gene expression.
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PMID:[Molecular and anatomical bases of dystonia: X-linked recessive dystonia-parkinsonism (DYT3)]. 1644 32

X-linked recessive dystonia-parkinsonism (XDP; DYT3; Lubag) is an adult-onset disorder that manifests severe and progressive dystonia with a high frequency of generalization. In search for the anatomical basis for dystonia, we performed postmortem analyses of the functional anatomy of the basal ganglia based on the striatal compartments (i.e., the striosomes and matrix compartment) in XDP. Our study showed that in the XDP neostriatum, the matrix compartment is relatively spared in a mosaic pattern, whereas the striosomes are severely depleted. In view of the three-pathway basal ganglia model, we postulate that the disproportionate involvement of neostriatal compartments and their efferent projections may underlie the manifestation of dystonia in patients with XDP. This study is the first to show specific basal ganglia pathology that could explain the genesis of dystonia in human heredodegenerative movement disorders, suggesting that dystonia may result from an imbalance in the activity between the striosomal and matrix pathways.
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PMID:[A pathomechanism for the genesis of dystonia: striatal compartments and hypothesized model of basal ganglia circuits]. 1743 34

X-Linked Dystonia-Parkinsonism (XDP or "Lubag") is a progressive neurodegenerative disorder unique to the Island of Panay in the Philippines. Imaging and autopsy studies have suggested involvement of the caudate and putamen in late stages. Because the clinical presentation of patients with XDP resembles that of patients with Parkinson disease or dystonia, it is reasonable to predict the neuropsychological profile might be similar; however, the neuropsychological profile of a XDP patient has not previously been published. We present the neuropsychological findings of a 67-year-old gentleman with a 10-year history of XDP who presented with parkinsonian and dystonic symptoms. He was evaluated for suitability for deep brain stimulation surgery. Neuropsychological findings demonstrated diffuse impairment involving memory, visuospatial, language, and executive functioning.
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PMID:Neuropsychological profile of a Filipino gentleman with X-linked dystonia-parkinsonism: a case report of Lubag disease. 1860 12

X-linked dystonia-parkinsonism (XDP, DYT3), endemic in the Philippine island of Panay, is characterized by the clinical onset with dystonia followed by parkinsonism. We found a 35-year-old American male patient, originally from Panay with typical XDP, has a 2-year history of parkinsonism, dystonia, and tremor. Ancestral DYT3 haplotype and disease-specific SVA (short interspersed nuclear element, variable number of tandem repeats, and Alu composite) retrotransposon insertion were identified in the DYT3 proband and two female unaffected family members. No mutation(s) and expression changes in peripheral blood lymphocytes were observed in the TATA-binding protein-associated factor 1 gene (TAF1) or the chemokine CXC motif receptor 3 gene (CXCR3) of the proband or other DYT3 carriers. These findings indicate blood DNA test has a diagnostic utility and implications for genetic counseling in families with DYT3. In contrast, TAF1 and CXCR3 gene expression in peripheral blood lymphocytes is not a suitable surrogate disease marker for DYT3.
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PMID:Genetic study of an American family with DYT3 dystonia (lubag). 1895 44


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