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Articles by G Rodriguez
Total Records ( 2 ) for G Rodriguez
  W Yu , M Cline , L. G Maxwell , D Berrigan , G Rodriguez , A Warri and L. Hilakivi Clarke

The possibility that dietary vitamin D3 (VD3) exposure inhibits endometrial carcinogenesis in an animal model and modifies the enhanced risk of endometrial carcinoma associated with obesity was investigated. At 4 weeks of age, Pten+/– and wild-type mice were each divided into four treatment groups and fed AIN93G control diet, or AIN93G-based diet containing either 25,000 international units of VD3 per kilogram of diet, 58% fat to induce obesity (high fat), or high fat and 25,000 international units of VD3 per kilogram of diet. Mice were kept on these diets until they were sacrificed at week 28. Although VD3 did not affect endometrial cancer risk, it inhibited obesity-induced increase in endometrial lesions. Specifically, high-fat diet increased focal glandular hyperplasia with atypia and malignant lesions from 58% in the control diet–fed Pten+/– mice to 78% in obese mice. Dietary VD3 decreased the incidence of endometrial pathology in obese Pten+/– mice to 25% (P < 0.001). VD3 altered the endometrial expression of 25-hydroxylase, 1-hydroxylase, and vitamin D receptor in the wild-type and Pten+/– mice. Estrogen receptor- mRNA levels were higher (P < 0.014) and progesterone receptor protein levels in the luminal epithelium were lower (P < 0.04) in the endometrium of control diet–fed Pten+/– than wild-type mice, but the expression of these receptors was not affected by the dietary exposures. VD3 reversed the obesity-induced increase in osteopontin (P < 0.001) and significantly increased E-cadherin expression (P < 0.019) in the endometrium of obese Pten+/– mice. Our data confirm the known association between obesity and endometrial cancer risk. Dietary exposure to VD3 inhibited the carcinogenic effect of obesity on the endometrium. This protective effect was linked to a reduction in the expression of osteopontin and increase in E-cadherin. Cancer Prev Res; 3(10); 1246–58. ©2010 AACR.

  C Moreau , J Bouyer , N Bajos , G Rodriguez and J. Trussell

Despite the widespread use of highly effective contraceptive methods in France, one in every three pregnancies is unintended. Among women experiencing an unintended pregnancy leading to an abortion, half had changed their contraceptive method in the 6 months preceding the abortion, in most cases switching to a less-effective method or to no method at all. This study provides estimates of method-specific contraceptive discontinuation rates for any reason and for method-related reasons among French women.


The data were drawn from the COCON survey (2000–2004), a population-based French prospective cohort, comprising a representative sample of 2863 women aged 18–44. We estimated Kaplan–Meier life-table probabilities of contraceptive discontinuation during the 4 years of follow-up and tested for differences by intrauterine device (IUD) type and pill composition.


Probabilities of contraceptive discontinuation for method-related reasons varied widely by method: IUDs were associated with the lowest probabilities of discontinuation (11% within 12 months, 30% within 4 years), followed by the pill (22% and 48%, respectively). Discontinuation rates were significantly higher for all other methods (condoms, withdrawal, fertility awareness methods and spermicides). We found no differences in discontinuation rates by the type of IUD (levonorgestrel-IUD versus copper-IUD) and increasing rates of pill discontinuation with decreasing dosage in estrogen.


Contraceptive discontinuation rates among French women are substantially lower than those reported for US women. Comparing the determinants of contraceptive discontinuation and the role of healthcare providers in helping women make these changes would improve our understanding of the reasons for such variation.

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