Demographic and Clinical Factors as Determinants of Serum Levels of Prostate Specific Antigen and its Derivatives

Marion Gray; B Delahunt; J Fowles; P Weinstein; R Cooke; J Nacey

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Demographic and Clinical Factors as Determinants of Serum Levels of Prostate Specific Antigen and its Derivatives

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Demographic and Clinical Factors as Determinants of Serum Levels of Prostate Specific Antigen and its Derivatives

Marion Gray, B Delahunt, J Fowles, P Weinstein, R Cooke and J Nacey

Anticancer Research: international journal of cancer research and treatment, Vol.24(3B), pp.2069-2072

2004

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Abstract

Oncology and Carcinogenesis

prostate specific antigen

prostate carcinoma

Background: To characterise the association between demographic and clinical factors and levels of total prostate specific antigen (tPSA) and its molecular derivatives [complexed PSA (cPSA), free PSA (fPSA) and the ratio of free to total PSA (%fPSA)] in New Zealand Maori, Pacific Islanders and Europeans, in order to determine whether reported ethnic differences in PSA can be explained by lifestyle and social factors. Materials and Methods: Demographic and clinical factors were examined in relation to tPSA, fPSA and cPSA levels, in 1405 Maori, Pacific Island and New Zealand European men with no clinical evidence of prostate cancer, in the Wellington region of New Zealand. Any associations between levels of PSA and PSA derivatives and body mass index, smoking status, family cancer history, non-steroidal anti-inflammatory/vitamin supplement usage, number of sexual partners, age at first intercourse, previous vasectomy, marital/partnership status, educational level and socioeconomic status were investigated by backwards stepwise regression analysis, correcting for age, ethnicity and urinary symptoms. Results: Not being married/partnered was associated with increased tPSA, fPSA and cPSA. tPSA and cPSA decreased with regular non-steroidal anti-inflammatory use. cPSA was decreased in subjects with a first degree relative with any form of cancer. tPSA and fPSA were decreased if the body mass index was > 34. fPSA and %fPSA were decreased in current and former smokers. Conclusion: Demographic and clinical factors appear to have a significant effect on levels of PSA and its various derivatives and may account for previously observed ethnic differences. It is important that these associations are taken into account when comparing individual PSA results with standard reference ranges.

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Title: Demographic and Clinical Factors as Determinants of Serum Levels of Prostate Specific Antigen and its Derivatives
Authors: Marion Gray (Author) - University of Otago, New Zealand
B Delahunt (Author) - University of Otago, New Zealand
J Fowles (Author) - Institute of Environmental Science and Research, New Zealand
P Weinstein (Author) - University of Otago, New Zealand
R Cooke (Author) - Department of Laboratory Services, New Zealand
J Nacey (Author) - University of Otago, New Zealand
Publication details: Anticancer Research: international journal of cancer research and treatment, Vol.24(3B), pp.2069-2072
Publisher: International Institute of Anticancer Research
Date published: 2004
ISSN: 0250-7005
Organisation Unit: University of the Sunshine Coast, Queensland; School of Health and Sport Sciences - Legacy
Language: English
Record Identifier: 99450372002621
Output Type: Journal article

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