View clinical trials related to Covid19.
Filter by:This study aimed to evaluate the anxiety and fear of infection between dentists working during the present corona virus disease 2019 (COVID-19) pandemic and to explore dentist's knowledge about various practice modifications and guidelines to fight the novel corona virus
COVID-PRONE is a multicenter, pragmatic, unblinded, 2-arm, parallel, randomized controlled trial seeking to compare the pre-emptive prone positioning (i.e. encouraging patients to adopt a prone position before they require mechanical ventilation) to the control arm of standard care alone. Randomization will be stratified by site.
The purpose of this study is to identify healthcare workers with SARS CoV 2 antibodies who have not been previously diagnosed and are presumed COVID-19 negative, then determine the level of immunity in this population which could inform further decisions about widespread antibody testing in a healthcare worker population.
This study is a randomized, double-blinded, and placebo controlled phase 1&2 clinical trial of the SARS-CoV-2 inactivated vaccine manufactured by Sinovac Life Sciences Co. , Ltd. The purpose of this study is to evaluate the safety and immunogenicity of the experimental vaccine in healthy elderly aged 60 years and above.
Preparation of safe purified hyper immunoglobulins containing anti-Corona VS2 immunoglobulins from plasma collected from COVID19 convalescent patients to be used to: 1. To determine efficacy of COVID19 hyper immunoglobulins prepared from convalescent plasma using VIPS Mini-Pool IVIG medical device in the treatment of COVID19 2. To determine efficacy of anti-SARS-CoV-2 hyper immunoglobulins in the prevention of infection in high risk groups exposed to SARS-CoV-2 infection
A multicenter randomized, double-blind, placebo-controlled clinical trial of Convalescent SARS COVID-19 plasma versus Placebo to evaluate the effect between arms on an ordinal score of six mutually exclusive categories of clinical status at day 30 after study initiation.
Background: People who have had contact with a person with a known SARS-CoV-2 infection are being told to self-quarantine for 14 days. This is done to avoid potential virus spread. But the actual time it takes for a person to develop an infection after being exposed to the virus is not well known. The proper quarantine time could be less or more than 2 weeks. Researchers hope this study can be used to help improve public health guidelines for quarantines, social distancing, and returning to work after a possible SARS-CoV-2 exposure. Objective: To better understand how long it takes a person to develop (or not develop) an infection with the SARS-CoV-2 virus after they have had contact with a person who has a confirmed infection. Eligibility: NIH staff members age 18 and older who had recent contact with a person who has a SARS-CoV-2 infection Design: Participants will have 3 study visits at the NIH Clinical Center. They may be asked to have an extra visit depending on the test results at the third visit. At each visit, participants will give a blood and saliva sample. It will be used to test for SARS-CoV-2 antibodies. Their temperature will be taken. They will complete a short survey to collect data about possible COVID-19 symptoms. At the first visit only, they will also complete a survey that asks about their recent social contacts. Two types of nasal samples will be collected at each visit. These samples will be tested for the SARS-CoV-2 virus. 1. a swab will be inserted deep into the back of the nose and 2. a swab will be inserted to the middle of your nose. Participation lasts 3 to 4 weeks.
Novel therapies are desperately needed for treatment of COVID-19 patients. At present, there are no proven interventions to prevent progression of the disease or to rapidly treat patients with COVID-19 related respiratory failure. Data on the original coronavirus -SARS pneumonia suggested that high dose (>160ppm) inhaled Nitric Oxide could have beneficial effects also on COVID-19, due to the genomic similarities between these two coronaviruses (1-3). This study will test whether high dose inhaled nitric oxide is safe and can reverse virus burden and respiratory failure in patients on mechanical ventilation.
Combination of Recombinant Bacterial ACE2 receptors -like enzyme of B38-CAP and Isotretinoin could be promising treatment for COVID-19 infection- and Its inflammatory complications Mahmoud ELkazzaz1 1Department of chemistry and biochemistry, Faculty of Science, Damietta University, Egypt. _____________________________________________________________________________________________ ________________________________________________________________________ B38-CAP is a bacteria-derived ACE2-like enzyme that suppresses hypertension and cardiac dysfunction Angiotensin-converting enzyme 2 (ACE2) is critically involved in cardiovascular physiology and pathology, and is currently clinically evaluated to treat acute lung failure. Here we show that the B38-CAP, a carboxypeptidase derived from Paenibacillus sp. B38, is an ACE2-like enzyme to decrease angiotensin II levels in mice. In protein 3D structure analysis, B38-CAP homolog shares structural similarity to mammalian ACE2 with low sequence identity. A study demonstrated that the bacterial B38-CAP as an ACE2-like carboxypeptidase, indicating that evolution has shaped a bacterial carboxypeptidase to a human ACE2-like enzyme. Bacterial engineering could be utilized to design improved protein drugs for hypertension and heart failure. pretreatment of B38-CAP markedly down regulated a massive increase of plasma Ang II levels at 5 min after Ang II injection In addition to the currently used drugs to inhibit Ang II generation or signaling, such as ACE inhibitors or Angiotensin receptor blockers, direct down-modulation of Ang II levels by rhACE2 protein is one of the promising candidates for new therapeutic strategy in cardiovascular disease and other Ang II-related diseases, e.g. ARDS. On the other hand, although mass production of rhACE2 as a protein drug costs due to requirement of mammalian cell expression systems, B38-CAP is easily prepared with E. coli expression system and is cost effective. Therapeutic efficacy and less toxicity in mouse heart failure models would warrant further investigation of B38-CAP or other microbial carboxypeptidases in disease models. Finally the principal investigator expects that treatment with ACE2-like enzyme of bacteria B38-CAP expected to work efficiently Like human ACE2 and it will save the lung cells from COVID - 19 inhibitory effect and down regulation of ACE2 because COVID-19 binds to human ACE2 and down regulates it and this receptors is very important for lung cells survival and function So ,the principal investigator also expects that B38-CAP ACE2 like enzyme may be not recognized by COVID -19 spike protein because evolutionary it is too far away from human ace2 and human ACE2 is a real receptor of COVID -19 not ACE2 like enzyme but in the same time it will make the same function of human ACE2 In another study by Sinha et al who analyzed a publicly available Connectivity Map (CMAP) dataset of pre/post transcriptomic profiles for drug treatment in cell lines for over 20,000 small molecules, isotretinoin was the strongest down-regulator of ACE 2 receptors. On the other hand, they found 6 drugs in CMAP that are currently being investigated in clinical trials for treating COVID-19 (chloroquine, thalidomide, methylprednisolone, losartan, lopinavir and ritonavir, from clinicaltrials.gov), none of which was found to significantly alter ACE2 expression (P>0.1) Moreover, another study demonstrated that isotretinoin is a Potential papain like protease (PLpro) inhibitors which is a protein encoded by SARS-CoV-2 genes and considered one of the proteins that should be targeted in COVID-19 treatment by performing target-based virtual ligand screening . So, the principal investigator expects strong inhibition of COVID - 19 infection And rescuing the lung cells from its serious attack by treating with ACE2 like enzyme and Isotretinoin Keywords: COVID 2019 , Isotretinoin,B38-CAP , Bacterial ACE2 receptors -like enzyme , rhACE226.
The purpose of this adaptive trial is to determine the clinical efficacy of Ifenprodil in the treatment of patients infected with COVID-19. This Protocol is largely based on the recommendations of the World Health Organization (WHO) R&D Blueprint Clinical Trials Expert Group COVID-19 Therapeutic Trial Synopsis, and associated Master Protocol. The choice of the primary outcome measure will be determined by a pilot study of the first 150 subjects. Subject clinical status (on a 7-point ordinal scale) at day 15 in treatment versus the control group is the default primary endpoint.