Active clinical trials for "COVID-19"

This is a randomized, blinded, positive-controlled study to evaluate the immunogenicity and safety of Recombinant SARS-CoV-2 Vaccine (CHO Cell) LYB001, in population aged 18 years old and above（negative antibody against COVID-19）. 720 subjects will be recruited in this study, including 360 in 1 dose of 30 or 60 μg group and 360 in 2 doses of 30 or 60 μg group. The age group consists of 18-59 years old and 60 years old and above.

In this multi-center phase II clinical trial, adults in stable health conditions will be vaccinated twice with either a low dose or high dose of the candidate vaccine MVA-SARS-2-S, or placebo. The aim of the study is to assess the safety and immunogenicity of the candidate vaccine.

An informational evaluation of COVID-19 patients who receive low-level laser therapy in addition to a normal regimen of treatment for symptoms associate with COVID-19. Results are compared to statistical observations published in literature from patients receiving standard care for COVID-19 symptoms without low-level laser therapy.

Colchicine acts upstream in the cytokines cascade by inhibiting the NLRP3 inflammasome while IL-6 receptor antagonists (tocilizumab) block the end result of the cytokines cascade. Hence, adding colchicine to tocilizumab with the aim of blocking the early and end products of the cytokines cascade, might reduce the risk of developing cytokine storm and hence the need for invasive mechanical ventilation and eventually death. Therefore, investigators aim to conduct an open-label randomized controlled trial to evaluate the efficacy and safety of adding colchicine to tocilizumab among patients with severe COVID-19 pneumonia in an attempt to reduce the rate of invasive mechanical ventilation and mortality. Investigators will include patients with severe COVID-19 pneumonia and already received tocilizumab according to local protocol. Enrolled patient will be then randomized in 1:1 to colchicine versus no colchicine. Patients will be followed up until discharge or for 30 days, whichever comes first. Data will be collected from electronic medical profiles. The primary efficacy outcome will be rate of invasive mechanical ventilation and will be determined using Cox proportional hazard model.

This phase III clinical trial is an endpoint-driven randomized, double-blind, parallel-controlled, multicenter clinical trial, and around 13,000 subjects aged 18 years and above who have previously received 1 dose of intramuscular Ad5-nCoV will be recruited. Volunteers should have been vaccinated with intramuscular Ad5-nCoV > 56 days prior to enrollment. All subjects will receive 1 dose of investigational vaccine or placebo through nebulized inhalation. The ratio of subjects in the vaccine group and placebo group is 1:1 and the efficacy and safety of the investigational vaccine will be followed up for 52 weeks after vaccination.

The rapid spread of SARS-CoV-2 (also known as 2019-nCoV and HCoV-19 1), a novel beta coronavirus B lineage (βCoV), has sparked a global coronavirus disease (COVID-19) pandemic. It has been suggested that RRAR, a unique furin-like cleavage site (FCS) in the spike protein (S) that is absent in other B βCoV lines such as SARS-CoV, is responsible for its high infectivity and transmissibility. Furin is a protein with a special function of a fermentative biocatalyst: which recognizes the degree of maturity of a group of amino acids Functionally, Furin works to renew the body, but it is also a path to the introduction of the SARS-CoV virus into a living human cell, HIV virus, Ebola virus, and others that penetrate a human cell using the Furin protein, sending a conditioned signal from the extracellular matrix, and gives the virus the opportunity to merge the protein of the coronavirus spike and the protein content of the cut cell, which activates the phase of virus replication in the body. We hypothesize that measuring the quantitative indicators of Furin protein expression in patients (at the onset of the disease) who have recovered from SARS-CoV-2 and vaccinated (with all types of vaccines) against coronavirus can provide an understanding of the molecular-cellular mechanisms of the virus's cellular invasion. This means that it will be possible to find new ways to prevent the fusion of the membranes of infected cells with normal ones (this mechanism allows the virus to spread throughout the body without leaving the affected cells). Protein identification will be carried out by Enhanced Chemiluminescence (ECL) (the method of enhanced chemiluminescence differs from the method of immunochemical staining using chromogenic substrates by a much greater sensitivity)

Participants had randomly divided into two equal groups. Group (A) which is the study group will receive photobiomodulation session two times per week for four weeks. Group (B) will be the control group that will receive placebo photobiomodulation two times per week for four weeks.

Efficacy and safety of Drug combination therapy of Isotretinoin and some Anti fungal Drugs as A potential Aerosol therapy for COVID-19 : An innovative therapeutic approach The pandemic of COVID-19 which is caused by severe acute respiratory syndrome coronavirus 2 (SARS-COV-2) has infected over 2,000,000 people causing over 150,000 deaths.It hasno currently approved treatments.. Airborne SARS-CoV-2 infections in humans initiate from the virus entering nasal and airway epithelial cells through binding to angiotensin-converting enzyme 2 (ACE2). TMPRSS2, a cellular protease that activates the SARS-CoV-2 spike protein, colocalizes with ACE2 and can prime SARS-CoV-2 fusion directly at the plasma membrane. In the lungs, SARS-CoV-2 infects type I and type II alveolar epithelial cells, as well as alveolar macrophages that are among the first producers of pro-inflammatory cytokines. As key components of the immediate antiviral response, type I interferons (here after referred to as IFNs) are crucial for restricting viral replication and spread, through autocrine and paracrine type I IFN receptor (IFNAR) signalling. However, minimal amounts of IFNs have been detected in the peripheral blood or lungs of patients with severe COVID-19 In a mouse model of SARS-CoV infection, local IFN responses in the lungs were delayed relative to peak viral replication, which impeded virus clearance and was associated with the development of CRS . SARS-CoV-2 ORF3b is a potent interferon inhebitor and antagonist Here, we review the molecular mechanisms by which Retinoic acid (isotretinoin) and antifungal drugs can cooperate to induce interferon in covid-19 infected patients A study reported that 13 Cis retinoic acid induced significant upregulation of toll-like receptor 3 resulting in an immune response to dsRNA intermediate which can be partially generated during CoV-2 replication . TLR3 sensitized by dsRNA and cascades of signaling pathways (Interferon-regulatory factor 1 (IRFs) and Nuclear factor-κB (NFκB) activation, respectively) are activated to produce type I interferons. The production of type I IFNs is important to enhance the release of antiviral proteins for the protection of uninfected cells. RA can be generated in multiple forms as all-trans, 9-cis,and 13-cis retinoic acid. A study reported that Retinoic acid induces directly the expression of two transcription factors, Stat1 and IRF-1 which play central roles in the IFN signal transduction. In addition, RA induces IFN-a synthesis, IFNs can serve as the first line of immune defense against viral infections. IFNs are very powerful cytokines, which play a key role in combatting pathogenic infections by controlling inflammation and immune response by directly inducing antipathogen molecular countermeasures. There are three classes of IFNs: type I, type II, and type III. Antifungal drug. Fluconazol or itraconazol can inhibit cytochrome P450 enzymes, especially cype 26 which control retinoic acid concentration into human cells enhance both isotretinoin effect and Concentrations in Target Tissues This in turn lead to hyper interferon induction and synthesis in case of COVID-19. Also a study demonstrated that isotretinoin can be given as aerosolized via inhalation rout without any damage in lung cells. Repeated high doses of 13 cis retinoic by inhalation resulted in moderate loss of body weight, but microscopic investigation of ten tissues including lung and oesophagus did not detect any significant aerosol-induced damage therefore inhaled isotretinoin might provide sufficient drug to the target cells in lung for efficacy while avoiding systemic toxicity. In conclusion,isotretinoin therapy has furthermore a proven anti-inflammatory, anti-platelet and fibrinolytic activities which may protect patients infected with covid-19 from widespread blood clots. From this point, we suggest that isotretinoin will be the immunity passport" in the context of COVID-19.

Data show that the coronavirus disease 2019 (COVID-19) symptoms can be severe in 4% and 3% of the adolescents aged 11-15 years and ≥ 16 years, respectively. In addition, the prevalence of chronic diseases among adolescents has increased in the last years. About 20% of the adolescents have some chronic disease, resulting in increased morbidity and mortality. In march, 2020, the quarantine was officially implemented in Sao Paulo, while elective medical appointments for adolescents with chronic disease were temporarily suspended. To mitigate the deleterious effect of the social isolation on physical and mental health among these patients, this study aims to test the effects of an online, home-based, exercise training program.

Background: Based on data from the 2003 SARS-COVID pandemic, other serious lung infections, and patients with respiratory distress, it is estimated that 10-30% of patients with severe SARS-COVID-2 pneumonia may present as a sequel an organized pneumonia. The treatment of this complication is not well defined. The use of oral corticosteroids is mandatory to avoid a possible evolution to pulmonary fibrosis, however, the doses to be administered and the duration of treatment are unknown as there is no study specifically aimed at solving this doubt. Many authors advocate high-dose treatment regimens for a minimum of six months, as proposed for cryptogenic organized pneumonia. However, there is a question whether in non-idiopathic cases of organized pneumonia, less intense treatment could resolve the disease. Hypothesis: The use of a less intensive prednisone regimen may be sufficient for therapeutic control in patients with post-COVID-19 organizing pneumonia, in relation to the established standard regimen Simplicity of the procedures: The objective of the NORCOVID study is to identify the optimal treatment regimen with corticosteroids in post-COVID19 patients diagnosed with NO. Specifically, the primary objective of this multicenter randomized trial is to evaluate whether treatment with a less intensive regimen of corticosteroids produces a non-inferior therapeutic effect than the established control regimen. Secondary objectives are to evaluate the effect of treatment on secondary efficacy variables and on safety. DLCO, respiratory function tests, 6MWT test, need for rescue, radiological tests, complications, mortality and the WHO ordinal scale will be evaluated.