Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0042963 (vomiting)
 31,883 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Citrullinemia, a rare inborn error of metabolism, is characterized by a deficiency of argininosuccinic acid synthetase that results in large increases in plasma ammonia, citrulline, and glutamine, with normal acid-base balance. The neurologic symptoms vary from poor feeding, vomiting, and irritability to hypotonia, apnea, and death. The most common pathologic findings at autopsy are cerebral edema and focal neuronal necrosis. We describe a case of fulminant citrullinemia in an infant in whom the major pathologic findings included diffuse cerebral edema and a lack of overt metabolic derangement characteristic of neonates with a urea cycle defect. Our case differs from the classic presentation of citrullinemia in that subarachnoid hemorrhage was identified early in the clinical course. We report the first observation of subarachnoid hemorrhage in an infant with a urea cycle defect.
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PMID:Perinatal pathology casebook. 886 47

Citrullinemia type I (CTLN1) is an inherited urea cycle disorder, now included in most newborn screening panels in the US and Europe. Due to argininosuccinate synthetase deficiency, CTLN1 can lead to recurrent hyperammonemic crisis that may result in permanent neurologic sequelae. Vomiting in patients with urea cycle disorders may either be the result or cause of acute hyperammonemia, particularly if due to an illness that leads to catabolism. Therefore, age-appropriate common etiologies of vomiting must be considered when evaluating these patients. We present a 1-month old male infant with CTLN1 who had a 1-week history of vomiting and was discovered to have hypertrophic pyloric stenosis. This is the first documented case of an infant with CTLN1 who was later diagnosed with hypertrophic pyloric stenosis, and only the second case of concomitant disease.
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PMID:Citrullinemia type I and hypertrophic pyloric stenosis in a 1-month old male infant. 2476 95