Abstract
Hydroxykynurenine/hydroxyanthranilic acid ratios were measured in children with febrile convulsions, afebrile fits, and fever, as well as in healthy controls. Increased ratios were found not only in the children who had fits but also in the children who were febrile and did not have fits. It is suggested that a raised hydroxykynurenine/hydroxyanthranilic acid ratio does not necessarily indicate vitamin B6 deficiency but may represent a nonspecific response of tryptophan metabolism to stress.
Full text
PDF


Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- BROWN R. R., PRICE J. M. Quantitative studies on metabolites of tryptophan in the urine of the dog, cat, rat, and man. J Biol Chem. 1956 Apr;219(2):985–997. [PubMed] [Google Scholar]
- BROWN R. R. The isolation and determination of urinary hydroxykynurenine. J Biol Chem. 1957 Aug;227(2):649–652. [PubMed] [Google Scholar]
- CAREDDU P., APOLLONIO T., GIOVANNINI M. [Disorders of tryptophan metabolism in the pathogenic mechanism of hyperpyretic convulsions]. Pediatrie. 1962;17:359–372. [PubMed] [Google Scholar]
- Coon W. W., Nagler E. The tryptophan load as a test for pyridoxine deficiency in hospitalized patients. Ann N Y Acad Sci. 1969 Sep 30;166(1):30–43. doi: 10.1111/j.1749-6632.1969.tb46371.x. [DOI] [PubMed] [Google Scholar]
- Heeley A. F. The effect of pyridoxine on tryptophan metabolism in phenylketonuria. Clin Sci. 1965 Dec;29(3):465–473. [PubMed] [Google Scholar]
- PLONKO M., RABE E. F. Pyridoxine hydrochloride (vitamin B6) need in infants and children; a study in patients with anemia, convulsions, and acute infections. AMA J Dis Child. 1956 Oct;92(4):382–389. doi: 10.1001/archpedi.1956.02060030376007. [DOI] [PubMed] [Google Scholar]
