Changes in serine metabolism by a serum factor present in a group of episodic psychotic patients

Biological Psychiatry
D FekkesJ Bruinvels


Addition of serum, obtained from patients suffering from an acute psychosis characterized by dysperceptions, to the culture media of fibroblasts altered the amino acid metabolism in these cells. After subculturing of fibroblasts in the presence of serum obtained from these patients, the concentrations of both serine and methionine were decreased in the medium as well as in the fibroblasts. Moreover, the concentration of taurine in the fibroblasts was increased. The specific activities of serine hydroxymethyltransferase and cystathionine beta-synthase were also measured in the fibroblasts. It was found that both enzyme activities were significantly higher after subculturing with patients' serum as compared with serum obtained from healthy controls. It is concluded that a factor, present in the serum of these acute psychotic patients, is responsible for the observed changes in serine, taurine, and methionine concentrations in the fibroblasts as well as for the increased enzyme activities mentioned.


Nov 1, 1970·Biochemical Medicine·S H MuddK R Hinds
Mar 1, 1980·Lancet·L PepplinkhuizenP Moleman


Jan 1, 1994·Journal of Neural Transmission. General Section·B ReglandC G Gottfries
Dec 15, 1992·Biological Psychiatry·T SargentT F Budinger
Feb 1, 2003·Acta Neuropsychiatrica·L PepplinkhuizenD Fekkes
Nov 30, 2013·Biological Psychiatry·Akiko Hayashi-TakagiKazuya Iwamoto

Related Concepts

Cystathionine beta-Synthase
Schizophreniform Disorders
Glycine Hydroxymethyltransferase

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