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Articles by T. E Rohan
Total Records ( 3 ) for T. E Rohan
  A. A Arslan , K. J Helzlsouer , C Kooperberg , X. O Shu , E Steplowski , H. B Bueno de Mesquita , C. S Fuchs , M. D Gross , E. J Jacobs , A. Z LaCroix , G. M Petersen , R. Z Stolzenberg Solomon , W Zheng , D Albanes , L Amundadottir , W. R Bamlet , A Barricarte , S. A Bingham , H Boeing , M. C Boutron Ruault , J. E Buring , S. J Chanock , S Clipp , J. M Gaziano , E. L Giovannucci , S. E Hankinson , P Hartge , R. N Hoover , D. J Hunter , A Hutchinson , K. B Jacobs , P Kraft , S. M Lynch , J Manjer , J. E Manson , A McTiernan , R. R McWilliams , J. B Mendelsohn , D. S Michaud , D Palli , T. E Rohan , N Slimani , G Thomas , A Tjonneland , G. S Tobias , D Trichopoulos , J Virtamo , B. M Wolpin , K Yu , A Zeleniuch Jacquotte and A. V. Patel
 

Background  Obesity has been proposed as a risk factor for pancreatic cancer.

Methods  Pooled data were analyzed from the National Cancer Institute Pancreatic Cancer Cohort Consortium (PanScan) to study the association between prediagnostic anthropometric measures and risk of pancreatic cancer. PanScan applied a nested case-control study design and included 2170 cases and 2209 control subjects. Odds ratios (ORs) and 95% confidence intervals (CIs) were estimated using unconditional logistic regression for cohort-specific quartiles of body mass index (BMI [calculated as weight in kilograms divided by height in meters squared]), weight, height, waist circumference, and waist to hip ratio as well as conventional BMI categories (underweight, <18.5; normal weight, 18.5-24.9; overweight, 25.0-29.9; obese, 30.0-34.9; and severely obese, ≥35.0). Models were adjusted for potential confounders.

Results  In all of the participants, a positive association between increasing BMI and risk of pancreatic cancer was observed (adjusted OR for the highest vs lowest BMI quartile, 1.33; 95% CI, 1.12-1.58; Ptrend < .001). In men, the adjusted OR for pancreatic cancer for the highest vs lowest quartile of BMI was 1.33 (95% CI, 1.04-1.69; Ptrend < .03), and in women it was 1.34 (95% CI, 1.05-1.70; Ptrend = .01). Increased waist to hip ratio was associated with increased risk of pancreatic cancer in women (adjusted OR for the highest vs lowest quartile, 1.87; 95% CI, 1.31-2.69; Ptrend = .003) but less so in men.

Conclusions  These findings provide strong support for a positive association between BMI and pancreatic cancer risk. In addition, centralized fat distribution may increase pancreatic cancer risk, especially in women.

  J. E Lee , S Mannisto , D Spiegelman , D. J Hunter , L Bernstein , P. A van den Brandt , J. E Buring , E Cho , D. R English , A Flood , J. L Freudenheim , G. G Giles , E Giovannucci , N Hakansson , P. L Horn Ross , E. J Jacobs , M. F Leitzmann , J. R Marshall , M. L McCullough , A. B Miller , T. E Rohan , J. A Ross , A Schatzkin , L. J Schouten , J Virtamo , A Wolk , S. M Zhang and S. A. Smith Warner
 

Fruit and vegetable consumption has been hypothesized to reduce the risk of renal cell cancer. We conducted a pooled analysis of 13 prospective studies, including 1,478 incident cases of renal cell cancer (709 women and 769 men) among 530,469 women and 244,483 men followed for up to 7 to 20 years. Participants completed a validated food-frequency questionnaire at baseline. Using the primary data from each study, the study-specific relative risks (RR) were calculated using the Cox proportional hazards model and then pooled using a random effects model. We found that fruit and vegetable consumption was associated with a reduced risk of renal cell cancer. Compared with <200 g/d of fruit and vegetable intake, the pooled multivariate RR for ≥600 g/d was 0.68 [95% confidence interval (95% CI) = 0.54-0.87; P for between-studies heterogeneity = 0.86; P for trend = 0.001]. Compared with <100 g/d, the pooled multivariate RRs (95% CI) for ≥400 g/d were 0.79 (0.63-0.99; P for trend = 0.03) for total fruit and 0.72 (0.48-1.08; P for trend = 0.07) for total vegetables. For specific carotenoids, the pooled multivariate RRs (95% CIs) comparing the highest and lowest quintiles were 0.87 (0.73-1.03) for -carotene, 0.82 (0.69-0.98) for β-carotene, 0.86 (0.73-1.01) for β-cryptoxanthin, 0.82 (0.64-1.06) for lutein/zeaxanthin, and 1.13 (0.95-1.34) for lycopene. In conclusion, increasing fruit and vegetable consumption is associated with decreasing risk of renal cell cancer; carotenoids present in fruit and vegetables may partly contribute to this protection. (Cancer Epidemiol Biomarkers Prev 2009;18(6):1730–9)

  G. Y. F Ho , X Xue , M Cushman , G McKeown Eyssen , R. S Sandler , D. J Ahnen , E. L Barry , F Saibil , R. S Bresalier , T. E Rohan and J. A. Baron
 

The Aspirin/Folate Polyp Prevention Trial found that aspirin, but not folic acid, reduced recurrence of colorectal adenomas. This study examined whether treatment effects on inflammation markers explained the trial results. The trial had a factorial design with three aspirin (placebo, 81, and 325 mg/d) and two folic acid (placebo and 1 mg/d) groups. There were 884 subjects who had colonoscopic evaluation for adenomas at year 3 and plasma levels of C-reactive protein (CRP), interleukin 6 (IL-6), tumor necrosis factor (TNF-), soluble TNF receptor type II (sTNF-R2), and IL-1 receptor antagonist (IL-1Ra) measured at baseline and year 3. Among individuals not receiving folic acid, there was a 4% decrease (mean ratio of year 3 to baseline levels = 0.96, 95% confidence interval [CI] = 0.82 to 1.14) in CRP for a period of 3 years in the 325 mg of aspirin group vs a 20% increase (mean ratio = 1.20, 95% CI = 1.03 to 1.41) in the placebo group (P = .027). By contrast, the reverse was observed among individuals who also received folic acid (Pinteraction = .013). Changes in inflammation markers were not associated with adenoma recurrence. Low-dose aspirin (325 mg/d) is beneficial in stabilizing CRP levels, which may be abrogated by folate. Nevertheless, inflammation markers do not mediate the chemopreventive effect of aspirin on colorectal adenomas.

 
 
 
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