2014
DOI: 10.1590/0004-282x20130249
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Niemann-Pick disease type C: a case series of Brazilian patients

Abstract: The aim of the study was to analyze a series of Brazilian patients with Niemann-Pick disease type C (NP-C). Method: Correlations between clinical findings, laboratory data, molecular findings and treatment response are presented. Result: The sample consisted of 5 patients aged 8 to 26 years. Vertical supranuclear gaze palsy, cerebellar ataxia, dementia, dystonia and dysarthria were present in all cases. Filipin staining showed the "classical" pattern in two patients and a "variant" pattern in three patients. M… Show more

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Cited by 6 publications
(13 citation statements)
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“…It is suggested that biomarkers can be combined with molecular techniques in diagnoses. 5,[14][15][16] Thus, we confirmed the diagnosis of NPC through analysis of biomarkers and molecular genetic analysis.…”
Section: Introductionmentioning
confidence: 79%
See 1 more Smart Citation
“…It is suggested that biomarkers can be combined with molecular techniques in diagnoses. 5,[14][15][16] Thus, we confirmed the diagnosis of NPC through analysis of biomarkers and molecular genetic analysis.…”
Section: Introductionmentioning
confidence: 79%
“…[1][2][3] The identification of moderate elevation of chitotriosidase activity is not a particular NPC biomarker, as it can be found in patients with other lysosomal diseases. 5,16 Based on clinical assessment and an abnormal profile of biomarkers, diagnostic confirmation is done through molecular study and the complete sequencing of the NPC1 and NPC2 genes. This allows for the detection of the carrier condition in family members before genetic counseling.…”
Section: Discussionmentioning
confidence: 99%
“…As Niemann-Pick type C (NPC) disease requires for its diagnosis an invasive technical tool, the Filipin staining test performed in fibroblasts, we set up an independent network to deal with the protocol to diagnose this challenging disease. The NPC Brazil Network ( www.ufrgs.br/geneticahcpa/npc/ ) provides a comprehensive laboratory approach, including screening tests (chitotriosidase, oxysterols), diagnostic tests (Filipin), differential diagnosis (enzyme assays for Gaucher, Niemann-Pick A/B, acid lipase deficiency, and others) and confirmatory genetic analysis of NPC1 and NPC2 genes [ 10 ]. This network identified, until the end of 2015, 75 cases of NPC disease in Brazil, coming from all five Brazilian regions, the vast majority (96 %) being caused by mutations in the NPC1 gene, as expected.…”
Section: Activities Of a Reference Center In Inborn Errors Of Metabolmentioning
confidence: 99%
“…As primeiras diretrizes internacionais para o manejo clínico de NPC em crianças e adultos, foram publicadas em 2009. Desde então, uma quantidade significativa de dados sobre a epidemiologia, diagnóstico e tratamento desta doença tem sido publicada (Pineda et al, 2010;Piña-Aguilar et al, 2014;Jahnova et al, 2014;Lorenzoni et al, 2014;Abela et al, 2014;Fecarotta et al, 2015). Até o momento, pouca informação está disponível sobre a história natural das manifestações clínicas, em especial neurológicas.…”
Section: Justificativaunclassified
“…(Pineda et al, 2010;Piña-Aguilar et al, 2014;Jahnova et al, 2014;Lorenzoni et al, 2014;Abela et al, 2014;Fecarotta et al, 2015 formas infantil e juvenil contando com mais de 80% da nossa amostra (10 pacientes), é comparável com diversos estudos publicados. (Pineda et al, 2010;Piña-Aguilar et al, 2014;Jahnova et al, 2014;Lorenzoni et al, 2014;Abela et al, 2014;Fecarotta et al, 2015) A apresentação clínica clássica de NPC em geral é produto de uma gravidez normal, e cerca de metade destas crianças têm icterícia neonatal transitória, o que ocorreu com nossa amostra, onde 41,7% (5 pacientes (Pentchev et al 1985;Vanier et al 1991;Wraith et al 2009;Vanier, 2010 Observamos também, o uso de 2-hidroxipropil-beta-ciclodextrina (2HPBC), com aplicações intravenosas semanais, de forma irregular e sem relato da dose, em quatro pacientes, desde o ano de 2014. Estudos em cobaias tem apresentado efeitos benéficos com o uso da 2HPBC, e por não serem tóxicas, seu uso em seres humanos tem sido publicado como relatos de caso, com resultados de melhora da hepatopatia e retardando a neurodegeneração.…”
Section: Forma Infantil Precoce E Tardiaunclassified