Results 141 to 150 of about 23,446 (182)
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2016
The urea cycle is the final pathway for removal of surplus nitrogen from the body, the major route in humans for irreversible detoxification of ammonia and a source of arginine.2,3 Patients with adult-onset urea cycle disorders present with clinical symptoms that have a broad differential diagnosis (e.g., protein aversion, inappetence, cyclic vomiting,
Stefan Kölker +2 more
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The urea cycle is the final pathway for removal of surplus nitrogen from the body, the major route in humans for irreversible detoxification of ammonia and a source of arginine.2,3 Patients with adult-onset urea cycle disorders present with clinical symptoms that have a broad differential diagnosis (e.g., protein aversion, inappetence, cyclic vomiting,
Stefan Kölker +2 more
+5 more sources
Clinics in Liver Disease, 2000
Deficiency of any of the five enzymes in the urea cycle results in the accumulation of ammonia and leads to encephalopathy. Episodes of encephalopathy and associated symptoms are unpredictable and, if untreated, are lethal or produce devastating neurologic sequelae in long-term survivors.
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Deficiency of any of the five enzymes in the urea cycle results in the accumulation of ammonia and leads to encephalopathy. Episodes of encephalopathy and associated symptoms are unpredictable and, if untreated, are lethal or produce devastating neurologic sequelae in long-term survivors.
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2019
A female infant, weighing 2786 g, was born at 39 weeks gestational age with Apgar scores of 8 points at 1 min and 9 points at 5 min after birth. She had no family history of hereditary disorders. Although she had no medical problems at birth and consumed her mother’s breast milk, she developed fever with increased white blood cell counts (WBC: 22,070 ...
Kimitoshi Nakamura +2 more
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A female infant, weighing 2786 g, was born at 39 weeks gestational age with Apgar scores of 8 points at 1 min and 9 points at 5 min after birth. She had no family history of hereditary disorders. Although she had no medical problems at birth and consumed her mother’s breast milk, she developed fever with increased white blood cell counts (WBC: 22,070 ...
Kimitoshi Nakamura +2 more
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Diagnosis of Urea Cycle Disorders
Enzyme, 2017Hyperammonemia in pediatrics can be due to a number of causes (defects of urea cycle enzymes or transport of its metabolites, organic acidurias, acyl-CoA dehydrogenase or carnitine deficiency, liver bypass or nonspecific insufficiency) requiring differentiated rapid treatment for a satisfactory prognosis. The specific diagnosis cannot be established by
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Newborn Screening for Urea Cycle Disorders
Pediatrics, 1981Mass screening of newborn infants for inherited metabolic disorders began in the early 1960s with the development of the Guthrie bacterial inhibition assay for the detection of phenylketonuria (PKU).117 This simple assay utilizing dried filter paper blood specimens collected by heel prick from newborn infants has resulted in mass screening for PKU ...
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2017
The urea cycle is the primary nitrogen disposal pathway in humans. The urea cycle requires the coordinated function of six enzymes and two mitochondrial transporters to catalyze the conversion of a molecule of ammonia, the α-nitrogen of aspartate and bicarbonate into urea.
Andrea L. Gropman +2 more
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The urea cycle is the primary nitrogen disposal pathway in humans. The urea cycle requires the coordinated function of six enzymes and two mitochondrial transporters to catalyze the conversion of a molecule of ammonia, the α-nitrogen of aspartate and bicarbonate into urea.
Andrea L. Gropman +2 more
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Cognitive outcome in urea cycle disorders
Molecular Genetics and Metabolism, 2004Despite treatment, cognitive and motor deficits are common in individuals with inherited urea cycle disorders. However, the extent to which the deficits involve specific cognitive or sensorimotor domains is unknown. Furthermore, little is known about the neurochemical basis of cognitive impairment in these disorders.
Andrea L, Gropman, Mark L, Batshaw
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Liver transplantation in urea cycle disorders
European Journal of Pediatrics, 1999We report here our experience in the long-term management of 28 patients with citrullinaemia, 13 patients with carbamoyl phosphate synthase deficiency and 15 patients with argininosuccinic aciduria. In addition, we report a national French survey of 119 patients with ornithine transcarbamylase (OTC) deficiency enzymatically characterized in our ...
J M, Saudubray +9 more
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Citrulline for urea cycle disorders in Japan
Pediatrics International, 2016AbstractBackgroundThe amino acid l‐citrulline is used as a therapeutic agent for urea cycle disorders (UCD) including ornithine transcarbamylase deficiency (OTCD), carbamoyl phosphate synthetase I deficiency (CPSD), and N‐acetylglutamate synthase deficiency.
Kenichi, Tanaka +6 more
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Nutritional Management of Urea Cycle Disorders
Critical Care Clinics, 2005Nutritional management of patients who have urea cycle disorders is one of the most challenging tasks in clinical nutrition. The degree to which protein intake should be restricted in urea cycle disorders requires complex calculations which depend on many variables such as specific enzyme defect, age-related growth rate, current health status, level of
Rani H, Singh +5 more
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