Human platelet phenol sulfotransferase: stability of two forms of the enzyme with time and presence of a racial difference

Robert J. Anderson, Bertha L. Jackson

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Thermolabile (TL) and thermostable (TS) forms of human platelet phenol sulfotransferase (PST) were measured over various periods of time. TL PST was assayed with dopamine as the substrate and TS PST was measured with phenol and with p-nitrophenol. Levels of TL and TS PST from the same subjects did not change significantly over 1 day, 1 week, 4 weeks, and 8.5 months. Interassay coefficients of variation of PST activities over 3-4 weeks measured in samples from 8-12 subjects with dopamine, phenol and p-nitrophenol were 13.96%, 13.60% and 13.30%, respectively. There was a significant correlation between PST activity measured in the same samples with phenol and with p-nitrophenol (r = 0.946, n = 18, p <0.0001). TS PST activity measured with p-nitrophenol was significantly higher (p <0.0001) in platelets from 51 black subjects than the level of TS PST in samples from 52 white subjects (0.72 ± 0.06 vs 0.42 ± 0.04 units/108 platelets, respectively; mean ± SEM). These results demonstrate the 'stability' of the levels of both forms of the enzyme with time. They also point out the usefulness of a reproducible assay for the detection of a racial difference in the levels of TS PST.

Original languageEnglish
Pages (from-to)185-196
Number of pages12
JournalClinica Chimica Acta
Volume138
Issue number2
DOIs
StatePublished - Apr 13 1984
Externally publishedYes

Fingerprint

Arylsulfotransferase
Platelets
Blood Platelets
Enzymes
Phenol
Dopamine
Assays

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Clinical Biochemistry

Cite this

Human platelet phenol sulfotransferase : stability of two forms of the enzyme with time and presence of a racial difference. / Anderson, Robert J.; Jackson, Bertha L.

In: Clinica Chimica Acta, Vol. 138, No. 2, 13.04.1984, p. 185-196.

Research output: Contribution to journalArticle

@article{28547c078370474f846250ec3d2516b3,
title = "Human platelet phenol sulfotransferase: stability of two forms of the enzyme with time and presence of a racial difference",
abstract = "Thermolabile (TL) and thermostable (TS) forms of human platelet phenol sulfotransferase (PST) were measured over various periods of time. TL PST was assayed with dopamine as the substrate and TS PST was measured with phenol and with p-nitrophenol. Levels of TL and TS PST from the same subjects did not change significantly over 1 day, 1 week, 4 weeks, and 8.5 months. Interassay coefficients of variation of PST activities over 3-4 weeks measured in samples from 8-12 subjects with dopamine, phenol and p-nitrophenol were 13.96{\%}, 13.60{\%} and 13.30{\%}, respectively. There was a significant correlation between PST activity measured in the same samples with phenol and with p-nitrophenol (r = 0.946, n = 18, p <0.0001). TS PST activity measured with p-nitrophenol was significantly higher (p <0.0001) in platelets from 51 black subjects than the level of TS PST in samples from 52 white subjects (0.72 ± 0.06 vs 0.42 ± 0.04 units/108 platelets, respectively; mean ± SEM). These results demonstrate the 'stability' of the levels of both forms of the enzyme with time. They also point out the usefulness of a reproducible assay for the detection of a racial difference in the levels of TS PST.",
author = "Anderson, {Robert J.} and Jackson, {Bertha L.}",
year = "1984",
month = "4",
day = "13",
doi = "10.1016/0009-8981(84)90233-X",
language = "English",
volume = "138",
pages = "185--196",
journal = "Clinica Chimica Acta",
issn = "0009-8981",
publisher = "Elsevier",
number = "2",

}

TY - JOUR

T1 - Human platelet phenol sulfotransferase

T2 - stability of two forms of the enzyme with time and presence of a racial difference

AU - Anderson, Robert J.

AU - Jackson, Bertha L.

PY - 1984/4/13

Y1 - 1984/4/13

N2 - Thermolabile (TL) and thermostable (TS) forms of human platelet phenol sulfotransferase (PST) were measured over various periods of time. TL PST was assayed with dopamine as the substrate and TS PST was measured with phenol and with p-nitrophenol. Levels of TL and TS PST from the same subjects did not change significantly over 1 day, 1 week, 4 weeks, and 8.5 months. Interassay coefficients of variation of PST activities over 3-4 weeks measured in samples from 8-12 subjects with dopamine, phenol and p-nitrophenol were 13.96%, 13.60% and 13.30%, respectively. There was a significant correlation between PST activity measured in the same samples with phenol and with p-nitrophenol (r = 0.946, n = 18, p <0.0001). TS PST activity measured with p-nitrophenol was significantly higher (p <0.0001) in platelets from 51 black subjects than the level of TS PST in samples from 52 white subjects (0.72 ± 0.06 vs 0.42 ± 0.04 units/108 platelets, respectively; mean ± SEM). These results demonstrate the 'stability' of the levels of both forms of the enzyme with time. They also point out the usefulness of a reproducible assay for the detection of a racial difference in the levels of TS PST.

AB - Thermolabile (TL) and thermostable (TS) forms of human platelet phenol sulfotransferase (PST) were measured over various periods of time. TL PST was assayed with dopamine as the substrate and TS PST was measured with phenol and with p-nitrophenol. Levels of TL and TS PST from the same subjects did not change significantly over 1 day, 1 week, 4 weeks, and 8.5 months. Interassay coefficients of variation of PST activities over 3-4 weeks measured in samples from 8-12 subjects with dopamine, phenol and p-nitrophenol were 13.96%, 13.60% and 13.30%, respectively. There was a significant correlation between PST activity measured in the same samples with phenol and with p-nitrophenol (r = 0.946, n = 18, p <0.0001). TS PST activity measured with p-nitrophenol was significantly higher (p <0.0001) in platelets from 51 black subjects than the level of TS PST in samples from 52 white subjects (0.72 ± 0.06 vs 0.42 ± 0.04 units/108 platelets, respectively; mean ± SEM). These results demonstrate the 'stability' of the levels of both forms of the enzyme with time. They also point out the usefulness of a reproducible assay for the detection of a racial difference in the levels of TS PST.

UR - http://www.scopus.com/inward/record.url?scp=0021191856&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0021191856&partnerID=8YFLogxK

U2 - 10.1016/0009-8981(84)90233-X

DO - 10.1016/0009-8981(84)90233-X

M3 - Article

C2 - 6586330

AN - SCOPUS:0021191856

VL - 138

SP - 185

EP - 196

JO - Clinica Chimica Acta

JF - Clinica Chimica Acta

SN - 0009-8981

IS - 2

ER -