Risk factors for the occurrence of insulinoma: a case-control study

BACKGROUND: The etiology of insulinoma is poorly understood. Few studies investigated the possible roles of environmental factors and lifestyle in the pathogenesis of insulinoma. The aim of this study is to identify risk factors associated with occurrence of insulinoma in the Chinese population. METHODS: This study consisted of 196 patients with insulinoma and 233 controls. Demographic information of the patients and controls and risk factors of the disease were analyzed. Univariate and unconditional multivariable logistic regression analyses were made to estimate odds ratios (ORs) and possible risk factors. RESULTS: Approximately 68.88% (135/196) of the patients were from rural areas in contrast to 10.30% (24/233) of the controls (P【0.0001). This difference was confirmed by the multivariate analysis (OR=4.950; 95% CI: 2.928-8.370). Family history of pancreatic endocrine tumor (OR=16.754; 95% CI: 2.125-132.057) and other cancers (OR=2.360; 95% CI: 1.052-5.291) was also related to a high-risk population of insulinoma. CONCLUSION: Rural residents or people who have a family history of pancreatic endocrine tumor and other cancers are a high-risk population of insulinoma.

Can aspirin use reduce the risk of pancreatic cancer:an updated systematic review and meta-analysis

Background:Chemoprevention effect of aspirin for pancreatic cancer(PC)remains unclear.Here we performed an updated systematic review and meta-analysis to investigate the real association between aspirin consumption and risk of PC.Methods:PubMed,Web of Science,EMBASE and the Cochrane Database were systematic searched to identify the potential studies.Odds ratio(ORs)with 95%confidence intervals(CIs)were applied to assess the strength of associations.Results:Thirteen studies and approximately 28,440 participants were included.Aspirin significantly reduced the incidence of PC(OR,0.82;95%CI,0.73-0.93)in case-control studies.However,the overall results did not reveal an obvious association(OR,0.92;95%CI,0.74-1.16).Both low-dose(OR=0.86)and high-dose(OR=0.80)aspirin intake showed prevention effect.In addition,low frequency(OR,0.87;95%CI,0.73-1.05)and high frequency(OR,0.84;95%CI,0.69-1.03)seemed to be equally associated with decreased risk for PC.Aspirin consumption longer than 10 years use seems to have better effect(OR,0.73;95%CI,0.51-1.04)than shorter aspirin use(OR,0.94;95%CI,0.77-1.15).Conclusions:Our study indicated that aspirin use might be associated with decreased risk of PC,especially at high doses.But we still need to be cautious when interpreting the results.