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Published: 2016-11-30

Body Mass Index Can Increase the Risk of Gallbladder Cancer: A Meta-Analysis of 14 Cohort Studies

Hao Liu, Yong Zhang, Min Ai, Jun Wang, Bo Jin, Zhaowei Teng, Yansheng Wang, Li Li

(Department of General Surgery, The 6th Affiliated Hospital of Kunming Medical University, The People’s Hospital of Yuxi City, Yuxi, Yunan, China (mainland))

Med Sci Monit Basic Res 2016; 22:146-155

DOI: 10.12659/MSMBR.901651

BACKGROUND: This study sought to appraise the association between raised body mass index (BMI) and the risk of gallbladder cancer (GBC) by performing a meta-analysis of 14 cohort studies.
MATERIAL AND METHODS: Eligible cohort studies were selected by searching PubMed and EMBASE from their inception to May 26, 2016, and the reference lists of retrieved articles were also consulted. The information was screened by two authors separately. We used a fixed-effects model to calculate the overall pooled risk estimates. A random-effects model was used to identify heterogeneity.
RESULTS: The meta-analysis incorporated 14 cohort studies. Nine papers were deemed to be of high quality based on the Newcastle-Ottawa Scale (NOS). Compared with normal weight (BMI 18.5–24.9 kg/m²), the overall pooled relative risks (RR) of GBC was 1.45 (95% CI 1.30–1.61) for excess body weight individuals (BMI ≥25 kg/m²); 1.10 (95% CI 1.02–1.18) for overweight persons (BMI 25–29.9 kg/m²) and 1.69(95% CI 1.54–1.86) for obese folks (BMI ≥30 kg/m²). A higher risk of GBC was presented in obese women (women: RR 1.78, 95% CI 1.59–1.99; men: RR 1.50, 95% CI 1.25–1.79). And a positive relationship between overweight and GBC risk was also displayed in female (RR 1.25, 95% CI 1.11–1.40), but not in male (RR 1.01, 95% CI 0.93–1.11). The sensitivity analysis indicated stable results, and no publication bias was observed.
CONCLUSIONS: This meta-analysis of 14 cohort studies demonstrated that raised BMI has a dramatic association with risk of GBC, especially in women. But, no association between overweight and GBC in men was found.

Keywords: Body Mass Index, Cohort Studies, Gallbladder Neoplasms, meta-analysis

Published: 2016-11-16

Parathyroid Hormone-Induced Bone Marrow Mesenchymal Stem Cell Chondrogenic Differentiation and its Repair...

Yushu Chen, Yi Chen, Shujiang Zhang, Xiufan Du, Bo Bai

Med Sci Monit Basic Res 2016; 22:132-145

DOI: 10.12659/MSMBR.900242

Published: 2016-11-02

Total Artificial Heart Implantation After Undifferentiated High-Grade Sarcoma Excision

Jamila Kremer, Mina Farag, Rawa Arif, Andreas Brcic, Anton Sabashnikov, Bastian Schmack, Aron-Frederik Popov, Matthias Karck, Pascal M. Dohmen, Arjang Ruhparwar, Alexander Weymann

Med Sci Monit Basic Res 2016; 22:128-131

DOI: 10.12659/MSMBR.901526