RESUMO
The cytotoxic activity, EGFR/VEGFR2 target inhibition, apoptotic activity, RT-PCR gene expression, in vivo employing a solid-Ehrlich carcinoma model, and in silico investigations for highlighting the binding affinity of eight quinoxaline derivatives were tested for anticancer activities. The results showed that compound 8 (N-allyl quinoxaline) had potent cytotoxicity against A594 and MCF-7 cancer cells with IC50 values of 0.86 and 1.06 µM, respectively, with noncytotoxic activity against WISH and MCF-10A cells having IC50 values more than 100 µM. Furthermore, it strongly induced apoptotic cell death in A549 and MCF-7 cells by 43.13% and 34.07%, respectively, stopping the cell cycle at S and G1-phases. For the molecular target, the results showed that compound 8 had a promising EGFR inhibition activity with an IC50 value of 0.088 µM compared to Sorafenib (IC50 = 0.056 µM), and it had a promising VEGFR2 inhibition activity with an IC50 value of 0.108 µM compared to Sorafenib (IC50 = 0.049 µM). Treatment with compound 8 ameliorated biochemical and histochemical parameters near normal in the in vivo investigation, with a tumor inhibition ratio of 68.19% compared to 64.8% for 5-FU treatment. Finally, the molecular docking study demonstrated the binding affinity through binding energy and interactive binding mode inside the EGFR/VEGFR2 proteins. Potent EGFR and VEGFR2 inhibition of compound 8 suggests its potential for development as a selective anticancer drug.
Assuntos
Antineoplásicos , Quinoxalinas , Humanos , Relação Estrutura-Atividade , Sorafenibe/farmacologia , Simulação de Acoplamento Molecular , Quinoxalinas/farmacologia , Apoptose , Antineoplásicos/química , Receptores ErbB/metabolismo , Proliferação de Células , Estrutura Molecular , Ensaios de Seleção de Medicamentos Antitumorais , Inibidores de Proteínas Quinases/farmacologiaRESUMO
Background: The COVID-19 pandemic prompted the widespread adoption of telemedicine to deliver health care services while minimizing in-person contact. However, concerns persist regarding equitable access to telemedicine, especially for vulnerable populations. This study examines the utilization patterns of telemedicine by race in the United States, considering different modalities, medical specialties, and geographic regions. Methods: A comprehensive review of 26 articles published between January 2020 and August 2022 was conducted to analyze racial disparities in telemedicine use during the pandemic. Data from electronic health records and self-reported race were compiled for analysis. Variations based on geography, clinical care types, telemedicine modalities (audio or video), and study design were explored. Results: The findings indicate the presence of racial disparities in telemedicine utilization, with minority groups exhibiting lower usage rates compared with Whites. The location of outpatient clinics and clinical care types did not significantly influence telemedicine use by race. Among studies comparing telemedicine modalities, African Americans were more likely to choose audio/phone visits over video visits. Studies employing a pre-post design were less likely to identify disparities in telemedicine use by race. Conclusions: This study consistently demonstrates increasing racial disparities in telemedicine use. Future research should focus on identifying contributing factors and developing strategies to address these disparities. Policymakers should consider implementing initiatives promoting equitable access to telemedicine, including financial assistance, improved broadband infrastructure, and digital literacy programs. By addressing these barriers, telemedicine can play a crucial role in reducing health care disparities and improving access to care for all Americans.