VOPROSY MEDITSINSKOI KHIMII (ISSN 0042-8809)

Involvement of monoamine oxidases in formation of 4-hydroxyphenylethanol, major component of tribulin A

   
Panova N.G., Veselovskaya N.V., Medvedev A.E.
PubMed Id: 9273781
Year: 1997  Volume: 43  Issue: 3  Pages: 172-176
Pathways of 4-hydroxyphenylethanol formation were studied in the bovine brain. Incubation of brain homogenates with tyramine or tyrosine increased 4-hydroxyphenylethanol content only in the presence of NADH. Tyramine produced more pronounced augmentation of 4-hydroxyphenylethanol content than tyrosine. Tyrosine preparations were not contamined with tyramine. This suggests that 4-hydroxyphenylethanol may be formed from tyramine and tyrosine in NADH-dependent process. Preincubation of homogenates with 0.1 mM pargyline completely inhibited monoamine oxidases A and B and prevented NADH-dependent formation of 4-hydroxyphenylethanol from tyramine. The latter suggests that MAO is involved in formation of 4-hydroxyphenylethanol.
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Keywords: monoamine oxidase, endogenous inhibitors, brain, tribulin, 4-hydroxyphenylethanol, tyramine, tyrosine
Citation:

Panova, N. G., Veselovskaya, N. V., Medvedev, A. E. (1997). Involvement of monoamine oxidases in formation of 4-hydroxyphenylethanol, major component of tribulin A. Voprosy Meditsinskoi Khimii, 43(3), 172-176.
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