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Significance of different molecular forms of serum PSA : The free, noncomplexed form of PSA versus that complexed to α1-antichymotrypsin

Lilja, H. LU orcid (1993) In Urologic Clinics of North America 20(4). p.681-686
Abstract

Prostate specific antigen is an abundant prostate-derived serine protease in the seminal fluid. Low concentrations of the protein are normally released into blood, but above normal concentrations are frequently detected in prostate disease. The PSA-ACT complex is the predominant molecular form of serum PSA (up to ≃95%) although complex formation is slow between the purified proteins in vitro. A free, noncomplexed form of PSA constitutes a minor fraction of the serum PSA, although serum ACT occurs in large molar excess. The free, noncomplexed form of serum PSA is reported to constitute a significantly smaller proportion of the PSA in untreated prostate cancer than in BPH. The molecular basis for this finding is unclear, but measurements... (More)

Prostate specific antigen is an abundant prostate-derived serine protease in the seminal fluid. Low concentrations of the protein are normally released into blood, but above normal concentrations are frequently detected in prostate disease. The PSA-ACT complex is the predominant molecular form of serum PSA (up to ≃95%) although complex formation is slow between the purified proteins in vitro. A free, noncomplexed form of PSA constitutes a minor fraction of the serum PSA, although serum ACT occurs in large molar excess. The free, noncomplexed form of serum PSA is reported to constitute a significantly smaller proportion of the PSA in untreated prostate cancer than in BPH. The molecular basis for this finding is unclear, but measurements of the proportion of the free form of serum PSA or the proportion of serum PSA- ACT may facilitate discrimination between prostate cancer and BPH.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Urologic Clinics of North America
volume
20
issue
4
pages
6 pages
publisher
W.B. Saunders
external identifiers
  • scopus:0027889117
  • pmid:7505976
ISSN
0094-0143
DOI
10.1016/S0094-0143(21)00920-4
language
English
LU publication?
yes
id
2e72c0ec-282a-49f2-815a-b1e792b35c07
date added to LUP
2022-12-08 13:11:32
date last changed
2024-01-02 13:55:50
@article{2e72c0ec-282a-49f2-815a-b1e792b35c07,
  abstract     = {{<p>Prostate specific antigen is an abundant prostate-derived serine protease in the seminal fluid. Low concentrations of the protein are normally released into blood, but above normal concentrations are frequently detected in prostate disease. The PSA-ACT complex is the predominant molecular form of serum PSA (up to ≃95%) although complex formation is slow between the purified proteins in vitro. A free, noncomplexed form of PSA constitutes a minor fraction of the serum PSA, although serum ACT occurs in large molar excess. The free, noncomplexed form of serum PSA is reported to constitute a significantly smaller proportion of the PSA in untreated prostate cancer than in BPH. The molecular basis for this finding is unclear, but measurements of the proportion of the free form of serum PSA or the proportion of serum PSA- ACT may facilitate discrimination between prostate cancer and BPH.</p>}},
  author       = {{Lilja, H.}},
  issn         = {{0094-0143}},
  language     = {{eng}},
  number       = {{4}},
  pages        = {{681--686}},
  publisher    = {{W.B. Saunders}},
  series       = {{Urologic Clinics of North America}},
  title        = {{Significance of different molecular forms of serum PSA : The free, noncomplexed form of PSA versus that complexed to α1-antichymotrypsin}},
  url          = {{http://dx.doi.org/10.1016/S0094-0143(21)00920-4}},
  doi          = {{10.1016/S0094-0143(21)00920-4}},
  volume       = {{20}},
  year         = {{1993}},
}