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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Human phenol sulfotransferase: correlation of brain and platelet activities.

Phenol sulfotransferase (PST; EC catalyzes the sulfate conjugation of phenolic and catechol neurotransmitters and drugs. The human blood platelet has been the most thoroughly studied source of PST because of the possibility that the regulation of the enzyme in this easily accessible tissue might reflect the regulation of PST in the CNS. The human brain and platelet contain at least two forms of PST, forms designated as thermostable (TS) and thermolabile (TL) PST. TS PST catalyzes the sulfate conjugation of micromolar concentrations of phenol and p-nitrophenol and TL PST catalyzes the sulfate conjugation of dopamine and other monoamines. This study was performed to determine whether individual variations in the activities of human platelet TS and TL PST reflect individual variations in cerebral cortical PST activities. PST activities were measured in platelets and in cerebral cortical tissue obtained from 15 patients with epilepsy during clinically indicated neurosurgery. There was a highly significant correlation between the activities of the TS form of PST in cerebral cortex and platelets of these patients (r = 0.940, p less than 0.001), but there was not a significant correlation between activities of the TL form of PST in the two tissues (r = 0.396, p greater than 0.14). In addition to variations in the level of enzyme activity, there are also wide individual variations in the thermal stability of platelet TS PST.(ABSTRACT TRUNCATED AT 250 WORDS)[1]


  1. Human phenol sulfotransferase: correlation of brain and platelet activities. Young, W.F., Laws, E.R., Sharbrough, F.W., Weinshilboum, R.M. J. Neurochem. (1985) [Pubmed]
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