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Effects of 9-cis-Retinoic Acid on the Insulin-Like Growth Factor Axis in Former Smokers

Authors
 Ho-Young Lee  ;  Yoon Soo Chang  ;  Ji-Youn Han  ;  Diane D. Liu  ;  J. Jack Lee  ;  Reuben Lotan  ;  Margaret R. Spitz  ;  Waun Ki Hong 
Citation
 JOURNAL OF CLINICAL ONCOLOGY, Vol.23(19) : 4439-4449, 2005 
Journal Title
JOURNAL OF CLINICAL ONCOLOGY
ISSN
 0732-183X 
Issue Date
2005
MeSH
Adult ; Aged ; Alitretinoin ; Biomarkers ; Female ; Humans ; Insulin-Like Growth Factor Binding Protein 3/blood* ; Insulin-Like Growth Factor I/metabolism* ; Male ; Middle Aged ; Placebos ; Radioimmunoassay ; Receptors, Retinoic Acid/metabolism ; Smoking/adverse effects* ; Tretinoin/pharmacology*
Keywords
15994153
Abstract
PURPOSE: Insulin-like growth factor (IGF) axis has been associated with the risk of lung cancer. 9-cis-retinoic acid (9-cis-RA) has shown potential chemopreventive activities in former smokers. This study was designed to evaluate the effects of 9-cis-RA on IGF axis in former smokers to identify any benefit the retinoid may have in preventing lung cancer.
PATIENTS AND METHODS: Serum concentrations of IGF-I, IGF binding protein (IGFBP)-3, and their molar ratio (IGF-I/IGFBP-3) were measured with radioimmunoassay kits in stored blood samples from the participants of an original chemoprevention trial. The participants had ceased smoking for at least 12 months and were randomly assigned to receive 3 months of daily oral 9-cis-RA (100 mg) or placebo. All statistical tests were two-sided.
RESULTS: A total of 111 samples from the study's baseline and 84 samples from the 3 months treatment were analyzed. The serum concentrations of IGF-I and IGF-I/IGFBP-3 at baseline were significantly lower in female than in male participants. After 3 months of treatment, the serum level of IGF-I and IGF-I/IGFBP-3 were significantly lower in the 9-cis-RA group than in the placebo group (P = .03 and P < .01, respectively), but the IGFBP-3 level was significantly higher (P = .03).
CONCLUSION: 9-cis-RA treatment modulated the IGF axis in former smokers, suggesting that the IGF axis is a potential target for the chemopreventive activities of 9-cis-RA and that the serum concentrations of IGF, IGFBP-3, and IGF-I/IGFBP-3 could serve as surrogate end point biomarkers of 9-cis-RA treatment.
Full Text
http://jco.ascopubs.org/content/23/19/4439.long
DOI
10.1200/JCO.2005.04.572
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
Yonsei Authors
Jang, Yang Soo(장양수) ORCID logo https://orcid.org/0000-0002-2169-3112
Chang, Yoon Soo(장윤수) ORCID logo https://orcid.org/0000-0003-3340-4223
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/147550
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