PMID- 10069662 OWN - NLM STAT- MEDLINE DCOM- 19990329 LR - 20190905 IS - 0804-4643 (Print) IS - 0804-4643 (Linking) VI - 140 IP - 2 DP - 1999 Feb TI - Serum IGF-binding protein-6 and prostate specific antigen in breast cancer. PG - 164-8 AB - OBJECTIVE: Recent studies have demonstrated the presence of the IGF-binding proteins (IGFBPs) and prostate specific antigen (PSA), an IGFBP protease. in human breast tissue. We sought to investigate the differences in serum IGFs, IGFBP-1, -3 and -6, and PSA between patients with surgically proven breast cancer and patients with benign breast disease. DESIGN AND METHODS: Concentrations of IGFs, IGFBP-1, -3 and -6, and PSA were determined in the sera from 57 patients with breast cancer (CA), and 46 women with benign breast disease (BBD) using immunoassays for IGFs and IGFBPs and an ultrasensitive ELISA for PSA. RESULTS: The mean (+/- S.E.M.) serum IGFBP-6 level in the CA group, 127 (16) ng/ml, was statistically significantly lower than in the BBD group, 157 (10) ng/ml (P = 0.016). Patients with CA had an elevated geometric mean serum PSA level of 0.018 (range: 0.0015-0.107) ng/ml, compared with 0.007 (range: 0.0015-0.019) ng/ml in women with BBD (P = 0.025). Mean serum IGFBP-1 concentrations were significantly lower in the CA group, 16 (2) ng/ml, versus 37 (4) ng/ml in the BBD group (P = 0.001). Mean serum IGFBP-3 concentrations were also lower in the CA group versus the BBD group, at 1981 (65) ng/ml, versus 2603 (140) ng/ml (P = 0.002) respectively. In the CA group, statistically significant correlations between PSA and IGFBP-6 (r = 0.413; P = 0.001), and between PSA and IGFBP-1 (r = -0.329; P = 0.021) were seen. Differences in IGF-I and -II between the two groups were not statistically significant. CONCLUSION: Lower serum concentrations of IGFBP-6, -3 and -1, but higher PSA concentrations were seen in the breast cancer group, and collectively these would suggest that there is an increase in bioavailable IGF-I in breast cancer. FAU - Kaulsay, K K AU - Kaulsay KK AD - Department of Medicine, National University of Singapore, Singapore. FAU - Ng, E H AU - Ng EH FAU - Ji, C Y AU - Ji CY FAU - Ho, G H AU - Ho GH FAU - Aw, T C AU - Aw TC FAU - Lee, K O AU - Lee KO LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Eur J Endocrinol JT - European journal of endocrinology JID - 9423848 RN - 0 (Insulin-Like Growth Factor Binding Protein 1) RN - 0 (Insulin-Like Growth Factor Binding Protein 3) RN - 0 (Insulin-Like Growth Factor Binding Protein 6) RN - 67763-96-6 (Insulin-Like Growth Factor I) RN - 67763-97-7 (Insulin-Like Growth Factor II) RN - EC 3.4.21.77 (Prostate-Specific Antigen) SB - IM MH - Breast Neoplasms/*blood MH - Enzyme-Linked Immunosorbent Assay MH - Female MH - Humans MH - Immunoassay MH - Insulin-Like Growth Factor Binding Protein 1/blood MH - Insulin-Like Growth Factor Binding Protein 3/blood MH - Insulin-Like Growth Factor Binding Protein 6/*blood MH - Insulin-Like Growth Factor I/analysis MH - Insulin-Like Growth Factor II/analysis MH - Osmolar Concentration MH - Prostate-Specific Antigen/*blood EDAT- 1999/03/09 00:00 MHDA- 1999/03/09 00:01 CRDT- 1999/03/09 00:00 PHST- 1999/03/09 00:00 [pubmed] PHST- 1999/03/09 00:01 [medline] PHST- 1999/03/09 00:00 [entrez] AID - 10.1530/eje.0.1400164 [doi] PST - ppublish SO - Eur J Endocrinol. 1999 Feb;140(2):164-8. doi: 10.1530/eje.0.1400164.