ABSTRACT
Abstract Fabry disease is an inherited metabolic disorder characterized by progressive lysosomal accumulation of glycolipids in a variety of cell types, including neural cells. Small, unmyelinated nerve fibers are particularly affected and small fiber peripheral neuropathy often clinically manifests at a young age. Neuropathic pain and pain attacks are often the presenting symptoms of the disease and start at an average age of 9 years in male patients and 16 years in female patients, but currently a systematic literature review in early childhood showed the presence of these symptoms before the age of 5 years. Clinical studies have shown that enzyme replacement therapy may improve the overall pain scores and pain intensity in patients; improvements in pain outcomes have been sustained during the long-term follow-up, allowing many patients to reduce their use of pain medication. Some indirect evidence from dose-switching studies suggests that enzyme replacement therapy dose may be of relevance to pain outcomes. Considering that damage to small nerve fibers occurs early, prompt treatment is important in order to limit damage to the peripheral nervous system. In this article a comprehensive overview of the existing literature on small nerve fiber pathophysiology and the relationship with neuropathic pain and treatment response in children and adults with Fabry disease is presented.
ABSTRACT
La enfermedad de Fabry (EF) es una enfermedad por depósito lisosomal, con herencia ligada al X, causada por ladeficiencia de la enzima α-galactosidasa A, lo que lleva al acúmulo de glicoesfingolípidos en diferentes célulasdel organismo. La muerte de estos pacientes se da en el contexto de insuficiencia renal, cardiaca y cerebrovascular. Otros reportes demuestran que los pacientes con EFtienen una incidencia mayor de quistes renales que la población normal.Objetivo: evaluar en un grupo de 25 pacientes con EF los hallazgos ecográficos renales. Materiales y métodos: se evaluaron 25 pacientes (16 hemicigotas), 16-50 años, con diagnóstico confirmado por test bioquímicos y genéticos, sin insuficiencia renal. Resultados: los diámetros renales fueron normales, el24% del total de los evaluados presentaron quistes renales, con un total del grupo de los hemicigotas del 24% ydel total de las heterocigotas el 22,2% afectados. Conclusión: si bien el grupo de pacientes evaluados fue pequeño, hemos encontrado una incidencia mayor a la población normal, pero menor a los valores reportados por otros autores.
glycosphingolipid catabolism caused by the deficient activity of α-galactosidase A, that results in the progressiveaccumulation of globotriaosylceramide in different cells of organism. Patiens frequently die for renal or cardiacinsufficiency. Aim: to assess 25 patients (16 hemicygotes) with confirmdiagnosis of Fabry disease without renal insufficiency. Results: renal diameter were normal, 24% ot total patientsshowed cystic abnormalities.Conclusion: although our group was small, but we found a high incidence of cystic abnormalities compared withnormal population and smaller than other reports.