Publications by authors named "Guilherme M Lopes"

Article Synopsis
  • - Breast cancer is the most common cancer in women in Brazil, with a significant portion (over two-thirds) of patients expressing hormone receptors, making hormone therapy with tamoxifen a common treatment, which can raise the risk of endometrial cancer by four times.
  • - This study evaluated 364 breast cancer patients to investigate the link between tamoxifen use and endometrial issues, finding that 7.3% of tamoxifen users experienced endometrial changes, while none in the non-treatment group did.
  • - The research concluded that tamoxifen use is significantly associated with endometrial changes, even after accounting for obesity as a risk factor, highlighting the importance of monitoring endometrial health in patients undergoing hormone therapy
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Overpopulation and environmental degradation due to inadequate resource-use are outcomes of human's ecosystem engineering that has profoundly modified the world's landscape. Despite the age-old concern that unchecked population and economic growth may be unsustainable, the prospect of societal collapse remains contentious today. Contrasting with the usual approach to modeling human-nature interactions, which are based on the Lotka-Volterra predator-prey model with humans as the predators and nature as the prey, here we address this issue using a discrete-time population dynamics model of ecosystem engineers.

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