The Prognostic Significance of Programmed Death-Ligand 1 (PD-L1) in Skin Neoplasms: A Systematic Review and Meta-Analysis.

Background and AimsProgrammed death-ligand 1 (PD-L1) is an immune checkpoint molecule with proven therapeutic and prognostic implications. However, its prognostic significance in skin neoplasms remains controversial. In this study, we aimed to evaluate the prognostic value of PD-L1 expression in skin neoplasms.

Tissue Plasminogen Activator for COVID-19-induced Severe Acute Respiratory Distress Syndrome: A Controlled Clinical Trial.

Objective: This study aimed to assess the safety and efficacy of tissue Plasminogen Activator (tPA) in patients with COVID-19-induced severe Acute Respiratory Distress Syndrome (ARDS).

Methods: The intervention group consisted of eligible patients with severe ARDS due to COVID-19 admitted to the Intensive Care Unit (ICU) of a university hospital. We selected the control group from admitted patients treated in the same ICU within the same period.

The role of saliva PCR assay in the diagnosis of COVID-19.

Introduction: The introduction of a self-collection sampling method with less discomfort would be of great benefit in reducing the risk of medical provider's contamination and patient's acceptance. The aim of the present study was to investigate saliva samples' diagnostic performance for the COVID-19 RT-PCR test compared to pharyngeal swabs.

Methodology: From individuals referred to a medical center with presentations compatible with COVID-19 who were eligible for molecular diagnostic tests, 80 cases were selected.

Is There A Correlation Between COVID-19 and Hepatitis A and Hepatitis E Serum Antibody Level?

Background & Objective: The prevalence of COVID-19 and its severity have been observed to be on a lower level in underdeveloped countries with poorer standards of hygiene. This disparity may be attributed to the higher seroprevalence of other viral diseases, which can result in the presence of antibodies protective against COVID-19. Two of the widespread diseases in such countries are infection to hepatitis A and E viruses (HAV and HEV).

The Performance of SARS-CoV-2 Serology Testing in the Diagnosis of COVID-19.

Background & Objective: COVID-19 reverse transcription-polymerase chain reaction (RT-PCR) has been a reference test for diagnosing a disease since the very beginning of the pandemic. COVID-19 serology tests have also been developed and used to estimate the prevalence of individuals who have already been infected. We aimed to evaluate the performance of serology tests for the diagnosis of patients who had been referred to medical centers with acute symptoms.

Case Report: Encephalitis Caused by Balamuthia mandrillaris in a 3-Year-Old Iranian Girl.

It is about half a century since free-living amoebae were recognized as pathogenic organisms, but there is still much we should learn about these rare fatal human infectious agents. A recently introduced causative agent of granulomatous amoebic encephalitis, Balamuthia mandrillaris, has been reported in a limited number of countries around the world. A 3-year-old girl was referred to our tertiary hospital because of inability to establish a proper diagnosis.

The association between the level of serum 25(OH) vitamin D, obesity, and underlying diseases with the risk of developing COVID-19 infection: A case-control study of hospitalized patients in Tehran, Iran.

Unlabelled: BACKGROUND AND OBJECTIVES: The outbreak of COVID-19 has created a global public health crisis. Little is known about the predisposing factors of this infection. The aim of this study was to explore an association between the serum vitamin D level, obesity, and underlying health conditions, as well as the vulnerability to COVID-19 in the Iranian population.

The Novel Coronavirus SARS-CoV-2 Vulnerability Association with ABO/Rh Blood Types.

Background & Objective: Coronavirus disease 2019 (COVID-19) is the most recent emerging viral disease. Defining the epidemiological aspects and factors influencing the susceptibility of the patients to COVID-19 has been an ongoing struggle. In the present study, we have investigated the connection between ABO histo-blood group phenotypes and the COVID-19.

Pathological Findings of Postmortem Biopsies From Lung, Heart, and Liver of 7 Deceased COVID-19 Patients.

. A novel coronavirus named severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has been affecting almost all nations around the world. Most infected patients who have been admitted to intensive care units show SARS signs.