AIM： To examine the relationships between pre-diag- nostic biomarkers and colorectal cancer risk and assess their relevance in predictive models.METHODS： A nested case-control study was designed to include all first...AIM： To examine the relationships between pre-diag- nostic biomarkers and colorectal cancer risk and assess their relevance in predictive models.METHODS： A nested case-control study was designed to include all first primary incident colorectal cancer cases diagnosed between inclusion in the SUpplemen- tation en VItamines et Min^raux AntioXydants cohort in 1994 and the end of follow-up in 2007. Cases （n = 50） were matched with two randomly selected con- trols （n = 100）. Conditional logistic regression models were used to investigate the associations between pre- diagnostic levels of hs-CRP, adiponectin, leptin, soluble vascular cell adhesion molecule-1 （sVCAM-1）, soluble intercellular adhesion molecule-I, E-selectin, monocyte chemoattractant protein-1 and colorectal cancer risk. Area under the receiver operating curves （AUC） and relative integrated discrimination improvement （RIDI） statistics were used to assess the discriminatory poten- tial of the models. RESULTS： Plasma adiponectin level was associated with decreased colorectal cancer risk （P for linear trend -- 0.03）. Quartiles of sVCAM-1 were associated with increased colorectal cancer risk （P for linear trend = 0.02）. No association was observed with any of the other biomarkers. Compared to standard models with known risk factors, those including both adiponectin and sVCAM-1 had substantially improved performance for colorectal cancer risk prediction （P for AUC improve- ment = 0.01, RIDI = 26.5%）. CONCLUSION： These results suggest that pre-diag- nostic plasma adiponectin and sVCAM-1 levels are as- sociated with decreased and increased colorectal cancer risk, respectively. These relationships must be confirmed in large validation studies.展开更多
A case-control study involving 203 cases of pelvic endometriosis seen from 1987- 1989 , and 406 randomly selected and age-matched community controls was conducted in order to provide information relevant to effective ...A case-control study involving 203 cases of pelvic endometriosis seen from 1987- 1989 , and 406 randomly selected and age-matched community controls was conducted in order to provide information relevant to effective prophylxais of the disease. The diagnosis was confirmed by pathology from laparotomy and/or laparoscopy. A questionnaire focused on menstrual, marital and reproductive status , professional exposure and physical activities ,and the results were analyzed by a conditional logistic regression model. Women characterized by earlier menarche(≤ 12 years) and longer period(≥8 days) were found to be associated with an elevated incurring risk, and a trend of increasing risk associated with primary dysmenorrhea (RR =2. 1 for mild to moderate and RR= 5. 2 for severe dysmenorrhea), energetic physical activity during menstruation (RR =2. 1) , and allergic diathesis(RR=1 . 8) was seen. An inverse relationship was observed between the number of pregnancies and risk of endometriosis,and the protective effect was most significant when only the number of full-term pregnancies was counted.The risk factors of endometriosis are discussed, and intensive treatment of primary dysmenorrhea and avoidance of strenuous exercise during menstruation are identified as important measures in the prevention of endometriosis.展开更多
基金Supported by A grant from the French National Cancer Institute (Institut National du Cancer), No. INCa 2007-1-SPC-3
文摘AIM： To examine the relationships between pre-diag- nostic biomarkers and colorectal cancer risk and assess their relevance in predictive models.METHODS： A nested case-control study was designed to include all first primary incident colorectal cancer cases diagnosed between inclusion in the SUpplemen- tation en VItamines et Min^raux AntioXydants cohort in 1994 and the end of follow-up in 2007. Cases （n = 50） were matched with two randomly selected con- trols （n = 100）. Conditional logistic regression models were used to investigate the associations between pre- diagnostic levels of hs-CRP, adiponectin, leptin, soluble vascular cell adhesion molecule-1 （sVCAM-1）, soluble intercellular adhesion molecule-I, E-selectin, monocyte chemoattractant protein-1 and colorectal cancer risk. Area under the receiver operating curves （AUC） and relative integrated discrimination improvement （RIDI） statistics were used to assess the discriminatory poten- tial of the models. RESULTS： Plasma adiponectin level was associated with decreased colorectal cancer risk （P for linear trend -- 0.03）. Quartiles of sVCAM-1 were associated with increased colorectal cancer risk （P for linear trend = 0.02）. No association was observed with any of the other biomarkers. Compared to standard models with known risk factors, those including both adiponectin and sVCAM-1 had substantially improved performance for colorectal cancer risk prediction （P for AUC improve- ment = 0.01, RIDI = 26.5%）. CONCLUSION： These results suggest that pre-diag- nostic plasma adiponectin and sVCAM-1 levels are as- sociated with decreased and increased colorectal cancer risk, respectively. These relationships must be confirmed in large validation studies.
文摘A case-control study involving 203 cases of pelvic endometriosis seen from 1987- 1989 , and 406 randomly selected and age-matched community controls was conducted in order to provide information relevant to effective prophylxais of the disease. The diagnosis was confirmed by pathology from laparotomy and/or laparoscopy. A questionnaire focused on menstrual, marital and reproductive status , professional exposure and physical activities ,and the results were analyzed by a conditional logistic regression model. Women characterized by earlier menarche(≤ 12 years) and longer period(≥8 days) were found to be associated with an elevated incurring risk, and a trend of increasing risk associated with primary dysmenorrhea (RR =2. 1 for mild to moderate and RR= 5. 2 for severe dysmenorrhea), energetic physical activity during menstruation (RR =2. 1) , and allergic diathesis(RR=1 . 8) was seen. An inverse relationship was observed between the number of pregnancies and risk of endometriosis,and the protective effect was most significant when only the number of full-term pregnancies was counted.The risk factors of endometriosis are discussed, and intensive treatment of primary dysmenorrhea and avoidance of strenuous exercise during menstruation are identified as important measures in the prevention of endometriosis.
