COVID-19 and cardiovascular complications: an update from the underlying mechanism to consequences and possible clinical intervention.

Introduction: The novel coronavirus has caused significant mortality worldwide and is primarily associated with severe acute respiratory distress syndrome (ARDS). Apart from ARDS, clinical reports have shown noticeable cardiovascular complications among the patients of COVID-19. Infection from virus, stimulation of cytokine storm, altered immune response, and damage to myocardial tissue are some of the proposed mechanisms of cardiovascular complications in COVID-19.Areas covered: Based on the clinical reports of CVDs among COVID-19 patients, we have discussed the molecular mechanisms involved in cardiovascular pathogenesis, its prevalence, and association with COVID-19, and various available therapeutic modality for the treatment.Expert opinion: Seeing the cardiovascular complications in COVID-19 patients and its association with the existing drug, risk-benefit ratio of treatment paradigm, as well as the level of cardiac injury biomarkers must be monitored regularly. Additionally, a well-designed clinical trial should be conducted where head to head comparison can be made with anti-COVID-19 drugs and cardioprotective anti-inflammatory drugs. Nevertheless, vaccines are the best-suited approach, but until then, sanitization, social distancing, and active lifestyle are the best ways to beat this global pandemic situation.

Macrophage Activation and Cytokine Release Syndrome in COVID-19: Current Updates and Analysis of Repurposed and Investigational Anti-Cytokine Drugs.

Coronavirus disease (COVID-19) emerged from Wuhan, has now become pandemic and the mortality rate is growing exponentially. Clinical complication and fatality rate is much higher for patients having co-morbid issues. Compromised immune response and hyper inflammation is hall mark of pathogenesis and major cause of mortality. Cytokine release syndrome (CRS) or cytokine storm is a term used to affiliate the situation of hyper inflammation and therefore use of anti-cytokine and anti-inflammatory drugs is used to take care of this situation. Looking into the clinical benefit of these anti-inflammatory drugs, many of them enter into clinical trials. However, understanding the immunopathology of COVID-19 is important otherwise, indiscriminate use of these drugs could be fetal as there exists a very fine line of difference between viral clearing cytokines and inflammatory cytokines. If any drug suppresses the viral clearing cytokines, it will worsen the situation and hence, the use of these drugs must be based on the clinical condition, viral load, co-existing disease condition and severity of the infection.