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- Early Diagnosis of Mucopolysaccharidoses in PediatricsPublication . da Silva Gaspar, Paulo Jorge Miranda; Neiva, Raquel; Sousa e Silva, Lisbeth Elena; Diogo, Luisa; Ferreira, A.; Miranda, A.; Ribeiro, S.; Antunes, D.; Garcia, P.; Rodrigues, E.; Campos, T.; Janeiro, P.; Lopes, Altina; Pereira, Cristina; Nogueira, Célia; Sousa, S.; Ferreira, S.; Alves, Sandra; Leão Teles, Elisa; Vilarinho, LauraIntroduction: Mucopolysaccharidoses (MPSs) are a group of Lysosomal Storage Disorders with multisystem involvement, presenting different degrees of severity and evolution. At early disease stages and late onset forms, diagnosis can be postponed for years or even missed. The FIND PROJECT was designed to claim awareness to the redflags of MPSs at pediatric age and to provide a useful tool for physicians to diagnose these pathologies, since most of them are amenable to enzyme replacement therapy.
- Differential Diagnosis of Alpha-Mannosidosis in MPSsPublication . da Silva Gaspar, Paulo Jorge Miranda; Gonçalves, Diana; Neiva, Raquel; Sousa e Silva, Lisbeth Elena; Vilarinho, LauraIntroduction: Mucopolysaccharidosis (MPSs) and oligosaccharidosis, two subgroups of lysosomal storage disorders (LSDs), face diagnostic challenges due to their wide spectrum of clinical presentations and overlapping symptoms. One of the oligosaccharidose is α-mannosidosis, an extremely rare and often undiagnosed disorder. It is characterized by a deficiency in the enzymatic activity of α-mannosidase, which is responsible for cleaving mannose from N-linked oligosaccharides. This study aimed to investigate the activity of α-mannosidase in dried blood spot (DBS) samples that had undergone screening for MPSs.