Kidney and Metabolic Phenotypes in Glycogen Storage Disease Type-I Patients
2020
Aoun, Bilal | Sanjad, Sami A. | Degheili, Jad A. | Barhoumi, Abir | Bassyouni, Amina | Karam, Pascale E. | Pediatrics and Adolescent Medicine | Surgery | Department of Nutrition and Food Sciences | Specialized Clinical Programs and Services | Nephrology | Division of Urology | nherited Metabolic Diseases (IMD) Program | Faculty of Medicine (FM) | Faculty of Agricultural and Food Sciences (FAFS) | American University of Beirut
Patients and Methods: A retrospective chart review of 32 GSD- I patients, followed at the American University of Beirut Medical Center, between 2007 and 2018 was conducted. Diagnosis was confirmed by enzymatic and/or genetic studies. Clinical presentation, growth, and kidney outcome were assessed. All patients were evaluated for body mass index, blood parameters of metabolic control including uric acid, alanine, lactic acid, and triglycerides in blood. Kidney evaluation included creatinine clearance, microalbuminuria, citraturia, and calciuria as well as urine microalbumin/creatinine ratio. Results: Almost one third of GSD-I patients developed microalbuminuria. This was detected below 7 months of age in 36% of patients who required early treatment with ACEI with significant reduction in albuminuria. Kidney stones were present in 6% and were associated with hypercalciuria and hypocitraturia. Poor metabolic control reflected by hyperuricemia, lactic acidosis, and hyperalaninemia were noted only in patients who developed microalbuminuria. Conclusion: Glomerular injury may appear in early infancy in poorly controlled patients. Adequate metabolic control and ACEI therapy may improve kidney outcome in GSD I patients. Plasma alanine appears to be a promising and reliable marker reflecting metabolic control in GSD-I patients. © Copyright © 2020 Aoun, Sanjad, Degheili, Barhoumi, Bassyouni and Karam.
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