Triiodothyronine (T3) increases the expression of the amphiregulin (AREG) oncogene by activating extranuclear pathways in MCF-7 breast cancer cells.

Objective: Considering that the αvβ3 integrin plays an important role in tumor metastasis, this study investigated the involvement of these pathways in mediating the triiodothyronine (T3) effects on amphiregulin () expression.

Materials And Methods: We treated MCF-7 cells with T3 (10 nM) for 1 hour in the presence or absence of inhibitors for αvβ3 integrin (RGD peptide), MAPK (PD98059), PI3K (LY294002), and protein synthesis (cycloheximide [CHX]). A control group (C) received no T3 or inhibitors.

Effects of tributyltin on placental and reproductive abnormalities in offspring.

Tributyltin (TBT) is an organotin compound and a common persistent environmental pollutant with endocrine-disrupting chemical (EDC) actions. It can accumulate in the environment at various concentrations throughout the food chain in the ecosystem, posing a risk to human health, especially during critical periods such as gestation and fetal and offspring development. In this review, we report the results of studies describing the consequences of TBT exposure on placental and reproductive parameters in offspring of both sexes.

Phylogeography of SARS-CoV-2 Omicron sublineages detected in asymptomatic blood donors during third epidemiological wave in Mato Grosso, Midwestern Brazil.

Emerging infectious disease agents represent pathogens that may evade current screening protocols while posing significant transfusion transmission risks regionally. This study investigated the prevalence of SARS-CoV-2 and other respiratory viruses among 633 blood donors at the MT-Hemocentro from November 2021 to February 2023. Nucleic acid obtained from nasopharyngeal swabs were tested by RT-qPCR for SARS-CoV-2, RSV, FLU-A, and FLU-B.

Ivermectin Strengthens Paclitaxel Effectiveness in High-Grade Serous Carcinoma in 3D Cell Cultures.

Background: Chemoresistance is a major obstacle in high-grade serous carcinoma (HGSC) treatment. Although many patients initially respond to chemotherapy, the majority of them relapse due to Carboplatin and Paclitaxel resistance. Drug repurposing has surfaced as a potentially effective strategy that works synergically with standard chemotherapy to bypass chemoresistance.