The association of circulating adiponectin levels with pancreatic cancer risk; a study within the prospective EPIC cohort

Verena A Grote, Sabine Rohrmann, Alexandra Nieters, Laure Dossus, Jytte Halkjaer, Anne Tjønneland, Kim Overvad, Jakob Stegger, Nathalie Chabbert-Buffet, Marie-Christine Boutron-Ruault, Françoise Clavel-Chapelon, Birgit Teucher, Susen Becker, Jukka Montonen, Heiner Boeing, Antonia Trichopoulou, Pagona Lagiou, Dimitrios Trichopoulos, Domenico Palli, Sabina SieriRosario Tumino, Paolo Vineis, Amalia Mattiello, Marcial Argüelles, Eric J Duell, Esther Molina-Montes, Nerea Larrañaga, María-Dolores Chirlaque, Aurelio Barricarte Gurrea, Suzanne M Jeurnink, Petra Hm Peeters, Weimin Ye, Malin Sund, Björn Lindkvist, Dorthe Johansen, Kay-Tee Khaw, Nick Wareham, Francesca L Crowe, Isabelle Romieu, Sabina Rinaldi, Mazda Jenab, Dora Romaguera, Dominique S Michaud, Elio Riboli, H Bas Bueno-de-Mesquita, Rudolf Kaaks

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Abstract

Excess body weight and type 2 diabetes mellitus, risk factors of pancreatic cancer, are characterized by decreased levels of adiponectin. In addition to anti-inflammatory and anti-proliferative actions, adiponectin has an important role in regulating glucose metabolism, i.e. decreasing circulating blood glucose levels. Prospectively, hyperglycemia has been associated with risk of pancreatic cancer. The aim of this study was to investigate the association of pre-diagnostic adiponectin levels with pancreatic cancer risk. We conducted a case-control study nested within EPIC. Blood samples of 452 pancreatic cancer cases and 452 individually matched controls were analyzed by immunoassays. Multivariate conditional logistic regression was used to estimate odds ratios (OR) and 95% confidence intervals (CI). Overall, adiponectin showed no association with pancreas cancer risk; however, among never smokers, higher circulating levels of adiponectin were associated with a reduction in pancreatic cancer risk (OR = 0.44 [95% CI 0.23-0.82] for highest vs. lowest quartile), whereas among current smokers there was no significant association (OR = 1.59 [95% CI 0.67-3.76] for highest vs. lowest quartile; p-trend = 0.530; p-interaction = 0.309). In our study, lower adiponectin concentrations may be associated with the development of pancreatic cancer among never smokers, whereas the only other prospective study being conducted so far showed a decrease in risk among male smokers. Therefore, further studies are needed to clarify the role of adiponectin in pancreatic cancer development. © 2011 Wiley-Liss, Inc.
OriginalsprogEngelsk
TidsskriftInternational Journal of Cancer
Vol/bind130
Sider (fra-til)2428-2437
ISSN0020-7136
DOI
StatusUdgivet - 2012
Udgivet eksterntJa

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