Immune dysfunction following COVID-19, especially in severe patients

COVID-19: The potential role of nutritional deficiencies, global climatic changes, and immune system dysfunction

Olfactory Dysfunction and Phantosmia in Patients With COVID-19 in Northern Iran

Background: One of the most common symptoms of COVID-19 infection is Olfactory Dysfunction (OD). Objectives: This study aims to investigate OD and phantosmia in COVID-19 cases from northern Iran. Materials & Methods: In this cross-sectional study, participants were 400 patients with COVID-19 infection in Rasht, Iran from March 2019 to September 2020. All the patients were evaluated in terms o...

A Narrative Review on Evaluation of Hypercoagulability State in Severe Covid-19 Patients with Background Risk Factors

Coronavirus disease (COVID-19) can induce coagulopathy at the base of sepsis-induced coagulopathy (SIC), which is an important cause of death in these patients. Cytokine storm causes imbalance in coagulation and fibrinolytic system. A combination of hypercoagulability state, decrease or inhibition of fibrinolysis and endotheliopathy causes thromboembolic events. Underlying diseases such as diab...

Interpretation of Serologic Test Results and Evaluation of Humoral Immune Response After Vaccination Following Infection with COVID-19 Disease

SARS-CoV-2 virus infection induces a cellular and humoral mediated immune response and produces antibodies against viral antigens such as nucleocapsid (N) protein and spike (S) protein. Anti-protein S antibodies also target the spike protein subunit S1 and the receptor binding domain (RBD). Serologic tests can detect the presence of these antibodies in blood serum within a few days to a few wee...

Immune dysfunction in cancer patients.

Immune deficiency in cancer patients is well documented, and tumor cells have developed a variety of cellular and molecular mechanisms to avoid antitumor immune responses. These mechanisms include defective presentation of tumor antigens on the cell surface and/or an inability of the host to effectively recognize these cells and target them for destruction. Tumor-induced defects are known to oc...