A Case of Molecular Diagnosis of Ornithine Transcarbamylase Deficiency / 영남의대학술지
Yeungnam University Journal of Medicine
;
: 322-328, 2007.
Article
in Korean
| WPRIM
| ID: wpr-72239
ABSTRACT
Ornithine transcarbamylase (OTC) deficiency is the most common inborn error of urea cycle metabolism; it is inherited in an X-linked manner. The OTC catalyzes the third step of the urea cycle, the conversion of ornithine and carbamyl phosphate to citrulline. Deficiency of OTC leads to the accumulation of ammonia, causing neurological deficits. In most affected hemizygote males, OTC deficiency manifests as hyperammonemic coma that often leads to death in the newborn period, and those who recover from the coma may be neurologically impaired due to the sequelae of the hyperammonemic encephalopathy. In some, late-onset manifestations develop. We report a male neonate with early onset OT deficiency that had apnea and was comatous. On mutation analysis using DNA sequencing after polymerase chain reaction (PCR) amplification of the 10 exons, deletions of 10 bases in codon 285, causing a frame shift was detected in exon 8. The mother and a sister were diagnosed as female carriers. Therefore, genetic counseling and the risk assessment could be provided to the family.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Ornithine
/
Ornithine Carbamoyltransferase
/
Apnea
/
Urea
/
Codon
/
Carbamyl Phosphate
/
Polymerase Chain Reaction
/
Exons
/
Citrulline
/
Sequence Analysis, DNA
Type of study:
Diagnostic study
/
Etiology study
/
Risk factors
Limits:
Female
/
Humans
/
Male
/
Infant, Newborn
Language:
Korean
Journal:
Yeungnam University Journal of Medicine
Year:
2007
Type:
Article
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