Please use this identifier to cite or link to this item: https://doi.org/10.1007/BF02303501
Title: Tamoxifen alters levels of serum insulin-like growth factors and binding proteins in postmenopausal breast cancer patients: A prospective paired cohort study
Authors: Ho, G.-H.
Ji, C.-Y.
Phang, B.-H.
Lee, K.-O. 
Soo, K.-C.
Ng, E.-H.
Keywords: Breast cancer
Insulin-like growth factor
Insulin-like growth factor binding proteins
Tamoxifen
Issue Date: Jun-1998
Citation: Ho, G.-H., Ji, C.-Y., Phang, B.-H., Lee, K.-O., Soo, K.-C., Ng, E.-H. (1998-06). Tamoxifen alters levels of serum insulin-like growth factors and binding proteins in postmenopausal breast cancer patients: A prospective paired cohort study. Annals of Surgical Oncology 5 (4) : 361-367. ScholarBank@NUS Repository. https://doi.org/10.1007/BF02303501
Abstract: Background: Recent data suggest that tamoxifen may act by altering serum levels of insulin-like growth factors (IGFs) and their binding proteins (BPs). This prospective paired cohort study evaluated the influence of tamoxifen on serum levels of IGFs and BPs in postmenopausal patients with breast cancer. Methods: Blood was collected from 32 postmenopausal patients with breast cancer before and during tamoxifen therapy for at least 6 months. All patients had undergone primary surgery. Serum concentrations of IGF-I, IGF-II, BP-I, and BP-3 were determined by immunoradiometric assays, and Western ligand blots provided a semiquantitative measurement of BP-2, BP-3, and BP-4. Statistical analysis was performed by paired Student's t-test. Results: Mean serum IGF-1 level was significantly lower after tamoxifen treatment (pretreatment: 116.2 ng/mL ± 13.6 [SEMI vs. posttreatment: 77.5 ng/mL ± 7.8; P = .003). In contrast, mean IGF-II levels increased from 651.5 ± 62.2 ng/mL to 812.5 ± 35.1 ng/mL during treatment (P = .006). Posttreatment levels of BP- 1 (92.9 ng/mL ± 7.5) were significantly higher compared to the pretreatment values (28.1 ng/mL ± 4.7; P
Source Title: Annals of Surgical Oncology
URI: http://scholarbank.nus.edu.sg/handle/10635/131943
ISSN: 10689265
DOI: 10.1007/BF02303501
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