View clinical trials related to Covid19.
Filter by:The project is a longitudinal cohort study based on an electronic questionnaire on views and experiences of COVID-ICU Health care professionals during the pandemic. In addition, a few of the informants participating in the cohort study will be asked to participate in focus groups to get a deeper understanding of the experiences of Health care professionals. Leaders at the randomized hospitals will be asked to participate in individualized interviews.
The project US3R is a general population survey that will measure the magnitude of utilised, postponed and foregone medical care in relation with other health care needs than coronavirus symptoms during the confinement period in Belgium. The study aims to describe the magnitude of unsatisfied health care needs for various types of care. It will also identify the reasons for these postponed and foregone care according to gender, health and socioeconomic status.
This is a prospective, double-blind, randomized, placebo-controlled study in two distinct cohorts to evaluate the efficacy and safety of hydroxychloroquine in the prevention of COVID-19 infection.
This study is designed to compare the efficacy of detection of COVID-19 infection using the serology test in blood sample and the PCR-based test in the nasopharyngeal (NP) and sputum sample. Furthermore, it aims to evaluate the temporal trend of appearance of IgM and IgG in blood.
The coronavirus disease 2019 (COVID-19) is an emerging pandemic in 2020 caused by a novel coronavirus named SARS-CoV2. Diabetes confers a significant additional risk for COVID-19 patients. Dipeptidyl peptidase 4 (DPP-4) is a transmembrane glycoprotein expressed ubiquitously in many tissues. In addition to its effect on glucose levels, DPP-4 has various effects on the immune system and several diseases, including lung diseases. This trial aims to assess the safety and efficacy of linagliptin, a DPP-4 inhibitor, in the treatment of COVID-19. The trial will be randomized without blinding, with one are treated by insulin only for glucose balance and the other by insulin and linagliptin. The trial will assess the effects of linagliptin on different measures of COVID-19 recovery.
The SARS-CoV-2 coronavirus pandemic is responsible for more than 180,000 deaths worldwide and 20,000 deaths in France. To date, no treatment or vaccine has been successful. Povidone-iodine is an antiseptic suitable for use on the skin and mucosa with potent virucidal activity, particularly against coronaviruses. It is marketed for oro-nasopharyngeal decolonization. 24 patients with positive nasopharyngeal SARS-CoV-2 carriage will be randomized (1:1) in an experimental group (benefiting from povidone iodine decolonization) or a control group. Patients in the experimental group will be asked to gargle with a 1% povidone-iodine solution, spray their nose with the same antiseptic solution, and finally applied 10% povidone-iodine cream in each nostril, all four times a day for five days. Patients will be followed for 7 days to evaluate the efficacy and safety of povidone iodine decolonization.
The aim of the study is to compare a treatment with doxycycline vs a placebo as soon as the patient is confirmed COVID-19 + and before the onset of oxygen dependence with the aim of reducing or even abolishing the cytokine explosion and thus the evolution towards a serious form of the disease which can lead to death. Three criteria support the rational use of tetrcycline in COVI-19 (1) The coronaviruses is known to bind to metalloproteases (MMPs) of the host, in particular to ensure viral survival. Tetracyclines are known to chelate zinc from MMPs. Their chelating activity may help inhibit COVID19 infection by limiting its ability to replicate in the host. (2) Tetracyclines may also be able to inhibit the replication of positive-polarity single-stranded RNA viruses, such as COVID19 (demonstrated on the dengue virus). (3) In addition, tetracyclines are modulators of innate immunity (anti-inflammatory activity), a property used in the treatment of inflammatory skin diseases for many years. These modulating effects are noted on several targets of innate immunity: They can decrease the expression of NFKB, the release of inflammatory cytokines such as TNF-α, IL-1β and IL-6, inhibit granulomas inflammatory and free radical release. Tetracyclines could therefore participate in limiting the cytokine release induced by COVID19. Their lipophilic nature and their strong pulmonary penetration could allow them to inhibit viral replication.
Few studies have reported the efficacy of HCQ in reducing the viral load and improving the severity of symptoms in hospitalized COVID-19 cases with serious respiratory infection. However, the prophylactic benefits of HCQ has not been clearly defined yet.
COHIVE is an observational cohort nested in four antiretroviral therapy research studies (ADVANCE - NCT03122262; D²EFT - NCT03017872; DolPHIN2 - NCT03249181 and NAMSAL-ANRS12313 - NCT02777229). COHIVE will include participants who are possible COVID-19 cases with symptoms or confirmed COVID-19 cases, and participants who agree to have a serology testing for SARS-CoV-2 regardless of COVID-19 history.
Efficacy of Sunlight Activated Synthetic Porphyrin in COVID-19 Infected Patients (SnPPIX) Mahmoud ELkazzaz(1),Rokia yousry abdelaziz sallam(2) _____________________________________________________________________________________________ _________________________________________________________________________ Abstract : The novel coronavirus pneumonia (COVID-19) is an infectious acute respiratory caused by the novel coronavirus. The virus is a positive-strand RNA virus with high homology to bat coronavirus. Depending on published study in which , conserved domain analysis, homology modeling, and molecular docking were used to compare the biological roles of specific proteins of the novel coronavirus. The principal investigator demonstrated according to previous researches that some viral structural and nonstructural proteins could bind to the porphyrin, respectively. At the same time, orf1ab, ORF10 and ORF3a proteins coordinated to attack heme on the 1-beta chain of hemoglobin, COVID-19 binds to the porphyrin of haem and displaces iron and a study denonestrated that Covid-19 could cause acquired acute porphyria which is the condition in which there is excess accumulation of porphyrin intermediate metabolites. This point can be taken advantage of X-ray induced visible luminescence of porphyrin for producing of Reactive Oxygen Species (ROS).Many porphyrins are benign in the dark but are transformed by sunlight into caustic, flesh-eating toxins Porphyrins have been used for photodynamic therapy (PDT) against a wide range of targets like bacteria, viruses and tumor cells It has been reported that ROS-based inactivation of viruses may occur due to several reasons, such as protein oxidation, single strand breaks in the RNA genome and protein-RNA crosslinking. Since ROS-based inactivation has a multi-targeted mechanism, it is much less likely that a virus would be able to develop resistance against it. Recently, porphyrins, already in use as photosensitizers for Photodynamic Therapy (PDT), were a study target to applications in medical area, namely as possible contrast agents in MRI. could be observed some examples of porphyrin derivatives already study as MRI contrast media. Low dark toxicity, neoplastic tissue affinity and synthetic accessibility are some of the important properties that contribute for its selection. In MRI studies was found that CM based on paramagnetic metalloporphyrins showed higher affinity for neoplastic tissues, observed by increased relaxation time of the neoplastic tissues, which is reflected on an increase in MRI signal and consequently in a better neoplastic lesions detection. A study demonestrated that The sulfonated tetranaphthyl porphyrin contrast agents in MRI (TNapPS), sulfonated tetra-anthracenyl porphyrin (TAnthPS), and sulfonated 2,6-difluoro-meso-tetraphenylporphine [TPP(2,6-F2)S] and its copper chelate [TPP(2,6-F2)S,Cu], which reduced HIV infection by 99, 96, 94, and 96%, respectively. Previous studies which showed that Covid -19 binds to the porphyrin of haem and displaces iron in addition to Sulfonated porphyrins and light-stimulated Sn- protoporphyrin IX have broad antiviral activity against more distinct types of viruses, Co-protoporphyrin IX and Sn-protoporphyrin IX inactivate Zika, Chikungunya and other arboviruses by targeting the viral envelope Porphyrins are amphipathic molecules able to interact with membranes and absorb light, being widely used in photodynamic therapy. Previously, we showed that heme, Co-protoporphyrin IX (CoPPIX) and Sn-protoporphyrin IX (SnPPIX) directly inactivate DENV and YFV infectious particles. Here we demonstrate that the antiviral activity of these porphyrins can be broadened to CHIKV, ZIKV, Mayaro virus, Sindb is virus and Vesicular Stomatitis virus. Porphyrin treatment causes viral envelope protein loss, affecting viral morphology, adsorption and entry into target cells , Finally, the principal investigator expect that viral load will be declined with sunlight because In particular, porphyrins absorb essentially all the UV/visible light wavelengths in the emission spectrum of the sun; hence they are active at very low doses . Keywords: COVID 2019 ,Infection, Sulfonated porphyrins and X-ray induced visible luminescence of porphyrin