Results 81 to 90 of about 14,220 (236)

Carglumic acid: an additional therapy in the treatment of organic acidurias with hyperammonemia?

Orphanet Journal of Rare Diseases, 2008
Background Hyperammonemia in patients with methylmalonic aciduria (MMA) and propionic aciduria (PA) is caused by accumulation of propionyl-CoA which decreases the synthesis of N-acetyl-glutamate, the natural activator of carbamyl phosphate synthetase 1 ...
Guffon Nathalie, Vianey-Saban Christine, Acquaviva Cécile, Fouilhoux Alain, Forest Isabelle, Levrat Virginie   +5 more
doaj   +1 more source

Biochemical Testing Promotes Interpretation of Variants of Uncertain Significance in Prenatal Genetic Disease Testing in Four Organic Acidurias

Clinical Genetics, Volume 109, Issue 2, Page 211-217, February 2026.
This review demonstrates how amniotic fluid biochemical testing provides critical phenotypic evidence (ACMG PP4) for reclassifying variants of uncertain significance (VUS) in prenatal organic acidurias. Integrating metabolite analysis with genetic testing enhances diagnostic accuracy and enables informed clinical decisions for affected families ...
Kaili Yin, Qingwei Qi
wiley   +1 more source

Causes of and diagnostic approach to methylmalonic acidurias [PDF]

, 2018
Summary: Several mutant genetic classes that cause isolated methylmalonic acidurias (MMAuria) are known based on biochemical, enzymatic and genetic complementation analysis. The mut0 and mut− defects result from deficiency of MMCoA mutase apoenzyme which
Baumgartner, M., Fowler, B., Leonard, J.
core  

Not So Rare: Errors of Metabolism during the Neonatal Period

, 2003
During the neonatal period, the diagnosis of an error of metabolism (EM) was once thought to portend a poor prognosis or lethality. Over the past two decades, the prognosis of many EMs has changed.
Banta-Wright, Sandra, Steiner, Robert D.
core   +1 more source

Neurological diagnoses in children potentially fulfilling the criteria for developmental coordination disorder

Developmental Medicine &Child Neurology, Volume 68, Issue 2, Page 251-262, February 2026.
In children potentially fulfilling the criteria for developmental coordination disorder (DCD), phenotypical assessment does not sufficiently predict the diagnostic outcome (i.e. DCD or an alternative diagnosis). Due to the lack of distinguishing clinical and diagnostic features and the high prevalence of genetic diagnoses in these patients, additional ...
Martinica Garofalo, Fleur Vansenne, Jessika F. van Hoorn, Marina A. J. Tijssen, Dineke S. Verbeek, Deborah A. Sival   +5 more
wiley   +1 more source

Brain damage in methylmalonic aciduria: 2-methylcitrate induces cerebral ammonium accumulation and apoptosis in 3D organotypic brain cell cultures

Orphanet Journal of Rare Diseases, 2013
Background Methylmalonic aciduria is an inborn error of metabolism characterized by accumulation of methylmalonate (MMA), propionate and 2-methylcitrate (2-MCA) in body fluids.
Jafari Paris, Braissant Olivier, Zavadakova Petra, Henry Hugues, Bonafé Luisa, Ballhausen Diana   +5 more
doaj   +1 more source

Nutritional Management in Severe Methylmalonic and Propionic Acidemias: How Much Medical Food Is Too Much?

Journal of Inherited Metabolic Disease, Volume 49, Issue 1, January 2026.
ABSTRACT Methylmalonic acidemia (MMA) and propionic acidemia (PA) are inherited metabolic disorders affecting valine and isoleucine catabolism. Long‐term therapy mainly involves dietary protein restriction. An amino acid mixture (AAM, medical food) free of the precursor amino acids is frequently used, especially when protein intake does not reach World
Diane Margoses, Apolline Imbard, Clément Pontoizeau, Anaïs Brassier, Jean‐Baptiste Arnoux, Juliette Bouchereau, Claire‐Marine Bérat, Murielle Assoun, Claire Belloche, Sabine Dewulf, Sandrine Dubois, Bénédicte Samba, Aude Servais, Myriam Dao, Edouard Le Guillou, Amélie de Colnet, Chris Ottolenghi, Pascale de Lonlay, Jean‐François Benoist, Manuel Schiff   +19 more
wiley   +1 more source

Proteinuria as a presenting sign of combined methylmalonic acidemia and homocysteinemia: case report

BMC Medical Genetics, 2020
Background Disorders of the metabolism and absorption of vitamin B12 can lead to decrease in activity of methionine synthetase and methylmalonate coenzyme A mutase (MMUT), which results in increased levels of methylmalonic acid and homocysteine in blood ...
Ru-Yue Chen, Xiao-Zhong Li, Qiang Lin, Yun Zhu, Yun-Yan Shen, Qin-Ying Xu, Xue-Ming Zhu, Lin-Qi Chen, Hai-Ying Wu, Xu-Qin Chen   +9 more
doaj   +1 more source

Hypoaminoacidemia and Pyroglutamic Aciduria: Potential Biomarkers in Malnutrition‐Related Hyperammonemia

JIMD Reports, Volume 67, Issue 1, January 2026.
ABSTRACT Hyperammonemia is a medical emergency, and the cause must be identified quickly in order to treat appropriately. Malnutrition is a known risk factor for hyperammonemia; however, there are limited reliable lab indicators used to identify malnutrition.
M. M. Crenshaw, O. M. D'Annibale, V. Martucci, S. Gracie, A. Kochhar, J. Stansauk, A. Larson, P. Baker II, C. Peck, T. Wood, A. El‐Gharbawy, S. McCandless, M. K. LoPiccolo   +12 more
wiley   +1 more source

Inborn Errors of Metabolism in the Era of Untargeted Metabolomics and Lipidomics. [PDF]

, 2019
Inborn errors of metabolism (IEMs) are a group of inherited diseases with variable incidences. IEMs are caused by disrupting enzyme activities in specific metabolic pathways by genetic mutations, either directly or indirectly by cofactor deficiencies ...
Fiehn, Oliver, Ismail, Israa T, Showalter, Megan R   +2 more
core   +2 more sources