Abstract oxidative stress is caused by an abundant generation of reactive oxygen species,
associated to a diminished capacity of the endogenous systems of the organism to …

Micronutrients are critical for an adequate function of the immune system and play a vital
role in promoting health and nutritional well-being. The present work is aimed at reviewing …

Background The modulating effect of vitamin D on cytokine concentrations in severe
coronavirus disease 2019 (COVID-19) remains unknown. Objectives We aimed to …

Since the rapid onset of the COVID‐19 or SARS‐CoV‐2 pandemic in the world in 2019,
extensive studies have been conducted to unveil the behavior and emission pattern of the …

We report an observational study performed between March and May 2020 in a Spanish
university hospital during the SARS-CoV-2 pandemic. The main objective was to analyse …

Background and aim Coronavirus Disease 2019 (COVID-19) has become a worldwide
pandemic and is a threat to global health. Patients who experienced cytokine storms tend to …

Despite the development of a number of vaccines for COVID-19, there remains a need for
prevention and treatment of the virus SARS-CoV-2 and the ensuing disease COVID-19. This …

Background: Vitamin D has diverse and extensive effects on the immune system, including
activating innate immunity and reducing the overactive adaptive immune response. A …

Background Several studies have suggested the positive impact of vitamin D on patients
infected with SARS-CoV-2. This systematic review aims to evaluate the effects of vitamin D …

The outbreak of pneumonia caused by severe acute respiratory syndrome coronavirus-2
(SARS-CoV-2), later named COVID-19 by the World Health Organization (WHO), was …