Effects of Chloroquine and Hydroxychloroquine on the Cardiovascular System - Limitations for Use in the Treatment of COVID-19

Pulmonary Delivery of Hydroxychloroquine Nanostructured Lipid Carrier as a Potential Treatment of COVID-19

Coronavirus Disease 2019 (COVID-19) is a pandemic caused by severe acute respiratory syndrome coronavirus 2. Pneumonia is considered the most severe and long-term complication of COVID-19. Among other drugs, hydroxychloroquine (HCQ) was repurposed for the management of COVID-19; however, low efficacy and cardiac toxicity of the conventional dosage form limited its use in COVID-19. Therefore, utilizing nanotechnology, a pulmonary delivery system of HCQ was investigated to overcome these limitations. HCQ was formulated in nanostructured lipid carriers (HCQ-NLCs) using the hot emulsification–ultrasonication method. Furthermore, the prepared formulation was evaluated in vitro. Moreover, the efficacy was tested in vivo in a bleomycin-induced acute lung injury mice model. Intriguingly, nanoformulations were given by the intratracheal route for 6 days. HCQ-NLCs showed a mean particle size of 277 nm and a good drug release profile. Remarkably, acute lung injury induced by bleomycin was associated with a marked elevation of inflammatory markers and histological alterations in lung tissues. Astoundingly, all these changes were significantly attenuated with HCQ-NLCs. The pulmonary delivery of HCQ-NLCs likely provided adequate targeting to lung tissues. Nevertheless, there is hope that this novel strategy will eventually lead to the improved effectiveness and diminished probability of alarming adverse drug reactions.

Pandemic Religion in Brazil—Temptation and Responsibility

Religious incidence in Brazilian public space is a widespread fact that has been gaining new visibility in pandemic times. Responsibility in liminal situations represents specific theological hermeneutics, as well as what matters for the respective religious agents. Thus, based on a bibliographical review connected to an analysis of websites, this article aims to reflect on the current Brazilian context, the challenges to doing theology in Brazil today and points to some possible responses. “Pandemic religion”, as we call it, is the synthesis of theologies and religious practices that legitimise irresponsible approaches to life, vulnerabilising the other instead of assuming care-based ethics. Firstly, we briefly describe current theological trends, followed by an analysis of the Brazilian scenario by way of three representative scenes of public religious incidence that reflect a lack of responsibility in view of the pandemic challenges caused by COVID-19. Subsequently, we look back into history for alternative responses to public health crises that required theological positioning. In a Brazilian perspective of a public theology, we finally reflect on a responsible ethics that may help respond to the current challenges, particularly for pandemic religion.