Clinical and genetic analysis of a patient with Krabbe disease presented as peripheral neuropathy / 中华医学遗传学杂志

OBJECTIVE@#To explore the clinical, electrophysiological and imaging features of a patient with Krabbe disease caused by GALC mutation.@*METHODS@#A comprehensive analysis including clinical investigation and genetic testing was carried out.@*RESULTS@#The patient presented with peripheral neuropathy with electrophysiological anomaly suggestive of asymmetric demyelinating neuropathy. Brain imaging revealed leukoencephalopathy. Genetic analysis has identified compound heterozygous mutations in exons 5 and 11 of the GALC gene, namely c.461C>A and c.1244G>A.@*CONCLUSION@#Krabbe disease is a group of disorders featuring substantial phenotypic heterogeneity. Genetic and enzyme testing has become indispensable for accurate diagnosis for this disease.

Late Infantile-Onset Globoid Cell Leukodystrophy: Treatment using Hematopoietic Stem Cell Transplantation / 대한소아신경학회지

Globoid cell leukodystrophy is a rare autosomal recessive disorder of the brain white-matter caused by galactosylceramidase deficiency; the disorder is classified into four types based on the age of onset. Approximately 80–85% of patients have an early infantile form, while 10–15% has a late infantile form. Globoid cell leukodystrophy leads to a progressive neurological deterioration, and affected patients rarely survive more than 2–3 years. Although many different treatments have been investigated over several decades, further research is still needed. Hematopoietic stem cell transplantation is the standard treatment for globoid cell leukodystrophy. Here, we report a case of symptomatic late-infantile globoid cell leukodystrophy treated with stem cell transplantation. After transplantation, disease progression ceased and cognitive and motor function improved. And a 6 months follow-up study using brain magnetic resonance imaging showed white matter involvement was increased. After that, annual follow-up brain magnetic resonance imaging showed a stable status of disease.

Effect of canine mesenchymal stromal cells overexpressing heme oxygenase-1 in spinal cord injury

Heme oxygenase-1 (HO-1) is a stress-responsive enzyme that modulates the immune response and oxidative stress associated with spinal cord injury (SCI). This study aimed to investigate neuronal regeneration via transplantation of mesenchymal stromal cells (MSCs) overexpressing HO-1. Canine MSCs overexpressing HO-1 were generated by using a lentivirus packaging protocol. Eight beagle dogs with experimentally-induced SCI were divided into GFP-labeled MSC (MSC-GFP) and HO-1-overexpressing MSC (MSC-HO-1) groups. MSCs (1 × 10⁷ cells) were transplanted at 1 week after SCI. Spinal cords were harvested 8 weeks after transplantation, after which histopathological, immunofluorescence, and western blot analyses were performed. The MSC-HO-1 group showed significantly improved functional recovery at 7 weeks after transplantation. Histopathological results showed fibrotic changes and microglial cell infiltration were significantly decreased in the MSC-HO-1 group. Immunohistochemical (IHC) results showed significantly increased expression levels of HO-1 and neuronal markers in the MSC-HO-1 group. Western blot results showed significantly decreased expression of tumor necrosis factor-alpha, interleukin-6, cycloogygenase 2, phosphorylated-signal transducer and activator of transcription 3, and galactosylceramidase in the MSC-HO-1 group, while expression levels of glial fibrillary acidic protein, β3-tubulin, neurofilament medium, and neuronal nuclear antigen were similar to those observed in IHC results. Our results demonstrate that functional recovery after SCI can be promoted to a greater extent by transplantation of HO-1-overexpressing MSCs than by normal MSCs.

Krabbe disease: the importance of early diagnosis to prognosis / Doença de Krabbe: a importância do diagnóstico precoce para seu prognóstico

Krabbe disease (globoid cell leukodystrophy) is an inherited recessive autosomal leukodystrophy caused by deficiency of the enzyme galactocerebrosidase. The lack of this enzyme leads to the build-up of galactolipids that will promote the death of oligodendrocytes and the demyelination of the central and peripheral nervous systems. There are two clinical forms: early onset and late onset. This article reports a case of late onset Krabbe disease and discusses the importance of early diagnosis for its prognosis.

Doença de Krabbe (leucodistrofia de células globoides) é uma leucodistrofia de herança autossômica recessiva causada pela deficiência da enzima galactocerebrosidase. A falta dessa enzima leva ao acúmulo de galactolipídeos que irão promover a morte dos oligodendrócitos e a desmielinização do sistema nervoso central e periférico. Possui duas formas clínicas: de início precoce e de aparecimento tardio. O presente artigo relata um caso da apresentação tardia da doença de Krabbe e discute a importância do diagnóstico precoce para o seu prognóstico.

A Korean Case of Infantile Krabbe Disease with a Novel GALC Gene Mutation / 대한소아신경학회지

Krabbe disease is a rare autosomal recessive neurodegenerative disorder caused by mutations in the galactocerebrosidase(GALC) gene. The deficiency of GALC activity leads to the accumulation of psychosine, resulting in apoptosis of myelin-forming cells of the central and peripheral nervous system. The patients with typical infantile onset Krabbe disease have extreme irritability, developmental regression, spasticity, and seizures with an onset prior to six months of age. These children usually die within two years after birth. We report a female infant who showed the characteristic clinical manifestations, disease course, and neuroimaging features of infantile onset Krabbe disease that was confirmed by the identification of a compound heterozygous mutation of the GALC gene.

Krabbe disease--a case report.

Krabbe disease is an extremely rare condition with an incidence of 1 in 1,00,000 live births. It is caused by deficient activity of the Iysosomal hydrolase galactosylceramide beta-galactosidase. A 6 years old male weighing 12 kg, was brought to Rajah Muthiah Medical College and Hospital with complaints of convulsions. The full-term child was delivered by lower segment caesarean section to second-degree consanguineous parents. The baby cried immediately after birth. The child attained normal milestones till two years of age. Thereafter he lost his attained milestones. The child had dysmorphic face with features like anti-Mongoloid eyes and teeth anomaly. Skin was lax all over the body especially over the face and was bruised. Respiratory distress and upward gaze were present. Bilateral crepitations were heard. Pupils were dilated and sluggishly reacted to light.

A Case of Krabbe Disease Confirmed by Identification of Mutations in the Galactocerbroside beta-galactosidase Gene (GALC)

Krabbe disease is an autosomal recessive disorder involving white matter caused by deficient activity of the lysosomal galactocerebrosidase (GALC). A typical infantile-onset patient shows developmental regression, spasticity, and seizure before 6 months of age, and dies within 2 years. Previously, one case was confirmed by an enzyme test in Korea. We herein report a 2 year-old girl who showed the characteristic clinical course and neuroimaging features of infantile-onset Krabbe disease. Genetic testing identified the compound heterozygote mutations in the GALC gene; NLWE212_215TP/302A.

Doença de Krabbe - relato de caso / Krabbe's disease - case report

Objetivo: relatar um caso de doença de Krabbe com estuto de necropsia. Métodos: Revisão de prontuários e laudos de necrópsia. Resultados: Paciente masculino, 8 meses, apresentou tremores de extremidades, dificuldade para de deglutição e salivação excessiva há 4 meses, evoluindo com vômitos e picos febris noturnos. O exame físico demonstrou microcefalia e dispersão pigmentar difusa da retina. Ao exame neurológico, evidenciou-se flexão e hipertonia espástica dos membros superiores, com abdução dos polegares, hiperreflexiaa simétrica generalizada com sinal de Babinski bilateral, nistagmo relatório, bem como espasmos espontâneos. O exame eletroencefalográfico demonstrou atividade irritativa multifocal. Houve ainda proteinorraquia com aumento da gamaglobuna. O paciente evoluiu com hipertermia transitória, vômitos e pneumopatia, indo a óbito no 23§ dia de internação. A necrópsia demonstrou microcefalia com encéfalo apresentando giros alargados. Microscopicamente evidenciaram-se numerosas células globóides na porção profunda da substância branca, gliose nacianal e desmielinização. Conclusões: Estes achados foram semelhantes aos da literatura mundial, indicando um prognóstico sombrio devido a lesões cerebrais substanciais