Arylsulfatase A deficiency (also known as metachromatic leukodystrophy or MLD) is characterized by three clinical subtypes: late-infantile MLD. La leucodistrofia metacromática es una enfermedad progresiva hereditaria y neurodegenerativa. Un paciente que sufre de esta enfermedad representa. Request PDF on ResearchGate | Leucodistrofia metacromática. Presentación de caso | Resumen La leucodistofia metacromática (LDM) es una enfermedad.

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The two phenotypes that show notable leufodistrofia with arylsulfatase A deficiency are multiple sulfatase deficiency and saposin B deficiency Table 2. Only comments written in English can be processed. MedGen Related information in MedGen. In the gallbladder, hyperplastic polyps are common and hemobilia as well as gallbladder carcinoma have been reported as complications [ Garavelli et alvan Rappard et al b ].

The diagnosis of arylsulfatase A deficiency metachromatic leukodystrophy, MLD is established in a proband by the presence of suggestive findings e.


Affected individuals are usually homozygous or compound heterozygous for ARSA -MLD alleles that make no detectable functional arylsulfatase A enzyme I-type or null alleles [ Cesani et al ].

Areas of hypodensity reflect loss of myelination and cerebroside accumulation. Paternal uniparental isodisomy of chromosome 22 in a patient with metachromatic leukodystrophy. Mutations in brief no. Long-term outcome of allogeneic hematopoietic stem cell transplantation in patients with juvenile metachromatic leukodystrophy compared with nontransplanted control patients.

CiteScore measures average citations received per document published. Sedation for children with metachromatic leukodystrophy undergoing MRI. While environmental factors are thought to influence the onset and severity of MLD symptoms, no specific exacerbating agents are known.

See Quick Reference for an explanation of nomenclature.


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The clinical presentation of arylsulfatase A deficiency metachromatic leukodystrophy, MLD is heterogeneous with respect to the age of onset, leucoditsrofia rate of progression, and the initial symptoms. In more than half of patients the age of onset of the disease is between 10 and 30 years, with symptoms similar to psychosis, including auditory hallucinations, delusions, altered thought processes and catatonia.

Defective oligomerization of arylsulfatase a as a cause of its instability in lysosomes and metachromatic leukodystrophy. In these clinical types, HSCT can result in disease stabilization and high disease-burden-free survival. Eventually, the child becomes bedridden with metacrromatica spasms, decerebrate posturing, and general unawareness.

Orphanet J Rare Dis, 10pp. Efficacy of hematopoietic cell transplantation in metachromatic leukodystrophy: Dev Med Child Neurol. The initial picture, given the patient’s age and symptoms, suggested the onset of a schizophrenia-like psychotic illness, although its progression and lack of therapeutic response led to metacromtaica diagnosis being reconsidered.

Clinical and biochemical study of 29 Brazilian patients with metachromatic leukodystrophy.

Arylsulfatase A deficiency also known as metachromatic leukodystrophy or MLD should be suspected in individuals with the following:. Please help improve this article by adding citations to reliable leucoeistrofia.

Importance of the glycosylation and polyadenylation variants in metachromatic leukodystrophy pseudodeficiency phenotype.

Benign and pseudodeficiency variants. Aust N Z J Psychiatry, 48pp. Molecular characteristics leucpdistrofia Japanese patients with lipidosis: Novel mutations in the arylsulfatase A gene in eight Italian families with metachromatic leukodystrophy. The corresponding author is in possession of this document.

Brain auditory and visual evoked response testing demonstrate impairment in hearing and vision. Please cite leucodisyrofia article as: The best results are observed when HSCT is performed in pre- and very early symptomatic individuals with the juvenile or adult form of the disease.


Family planning The optimal time for determination of genetic risk, clarification of carrier status, and discussion of the availability of prenatal testing is before pregnancy.

De Queiroz Ribeiro, M.

Orphanet: Leucodistrofia metacromatica

Genetic Counseling Genetic counseling is the process of providing individuals and families with information on the nature, inheritance, and implications of genetic disorders to help them make informed medical and personal decisions. While such tests are no longer necessary for diagnosis, they may be used in protocols for monitoring disease progression or therapeutic trials. Krabbe diseaseX-linked adrenoleukodystrophyPelizaeus-Merzbacher diseaseAlexander diseasefucosidosis OMIMCanavan diseaseand gangliosidoses such as hexosaminidase A deficiency including Tay-Sachs disease.

SNIP measures contextual citation impact by wighting citations based on the total number of citations in a subject field. She was then treated with aripiprazole in progressively higher doses up to 60 mg, with which her behavioural and psychotic symptoms were finally stabilised.

Enzyme replacement improves nervous system pathology and function in a mouse model for metachromatic leukodystrophy. Psychiatric disorders secondary to neurometabolic Se continuar a navegar, consideramos que aceita o seu uso. Surveillance Individuals with MLD should be followed at regular intervals by a neurologist and a metabolic geneticist.

Alcohol or drug use, poor money management, emotional lability, inappropriate affect, and frank psychosis often lead to psychiatric evaluation and an initial diagnosis of dementia, schizophrenia, or depression.