View clinical trials related to Covid19.
Filter by:The process by which neutrophils expel DNA together with various proteins to the outside, forming a network structure called Neutrophil Extracellular Traps (NETs) constitutes a particular cell death that involves the destruction of the nuclear membrane before the plasmatic one. This process is called NETosis and differs from other known forms of cell death, such as necrosis and apoptosis. This process, however, if exaggerated, brings local or systemic damage. Viruses are known for their ability to evade the body's immune response. Only recently has it been seen that they can act as triggers for NETosis process. In fact, many viruses can stimulate neutrophils to produce NETs. Virus-induced NETs can begin to circulate in an uncontrolled manner, leading to an extreme systemic response of the body with the production of immunocomplexes, cytokines, Interferon I etc. To date, there are no data in the literature on the role of NETs in Covid-19 infection, a viral infection that leads to highly lethal interstitial pneumonia and for which there is currently no vaccine or specific therapy. Advanced forms of Covid-19 are often characterized by hyperinflammation ("cytokine storm") with the development of an ARDS-like condition. Furthermore, reports of micro and macro thrombotic phenomena such as microangiopathy, pulmonary embolism (which has led to a careful evaluation procedure for antithrombotic prophylaxis and/or coagulation in Covid-19 patients) are increasingly frequent. The primary objective of the study is to understand if NETs can be implicated in the response to Covid-19 and by which mechanisms. Concrete therapeutic proposals could derive from the knowledge and enhancement of this form of innate immunity. To do this, it will be necessary to evaluate the activity of NETosis in Covid-19 patients and evaluate whether the clinical course of the disease (worsening vs healing) determines the degree of NETosis activity. Therefore, the association between mortality from Covid-19/survival and NETs activity will be studied. Secondary objectives concern the possibility of studying the associations among NETosis markers and blood inflammation markers and among NETosis markers and the onset of peripheral or deep vein thrombosis. Finally, the possibility that the plasma deriving from Covid-19 patients could trigger the NETosis process in vitro will be evaluated.
The VIGIL study was set up at the beginning of the pandemic, in the spring of 2020, at a time when diagnostic testing for SARS-CoV-2 had to be performed according to specific clinical criteria (even if no clinical picture suggestive of COVID had been clearly identified). The management of sick young children (with respiratory tract infection that could be attributed to COVID) by pediatricians (infectious diseases specialists, emergency physicians, general practitioners, and outpatients) was facilitated by an algorithm whose objective was to help define the indications for SARS-CoV-2 PCR and subsequently for antigenic testing. The current technique of deep nasopharyngeal swabbing (for PCR or antigenic testing) is delicate and difficult in children, and is therefore a serious handicap for community-based screening, especially since infectious episodes are frequent in children. Since then, nasal self-tests that can be easily used in children have been commercialized and have facilitated screening. Because of the similarity between the clinical signs of respiratory tract infections in children, it is often impossible to distinguish between different viral respiratory infections and epidemics may overlap in time. However, the identification of the pathogen is the key to improve management of these infectious diseases. The VIGIL study is therefore continuing, still facilitated by the existence of an active pediatric network existing for 20 years. ACTIV AFPA and GPIP have created networks of hospital and ambulatory pediatricians who actively participate in various observatories https://www.jpeds.com/article/S0022-3476(17)31606-2/fulltext To date, these observatories have resulted in the publication of more than 80 articles in international journals (https://www.activ-france.com/fr/publications).
The study is designed as a randomized, controlled, multi-center open-label trial to compare standard-of-care (SOC) treatment with SOC + anakinra or SOC + tocilizumab treatment in hospitalized adult subjects who are diagnosed with severe COVID 19. Arm A: Standard-of-care Treatment (SOC) Arm B: Anakinra + SOC Arm C: Tocilizumab + SOC. All subjects will be treated with standard-of-care treatment. Arms B and C will also receive broad spectrum antibiotics initiated before or latest 24 hours after initiation of treatment with study drug. The primary follow-up period of the study is 29 days.
This study aims to evaluate the impact of the COVID-19 pandemic and its measures on lifestyle in Dutch children between 4 - 18 years.
Background: COVID-19 is a disease caused by the SARS-CoV-2 virus. It infects the respiratory tract. Some people who get COVID-19 have only mild symptoms. But for others, infection leads to pneumonia, respiratory failure, and, in some cases, death. Researchers want to learn more about any effects that may persist after people recover from COVID-19. Objective: To learn about any long-term medical problems that people who have recovered from COVID-19 might have, and whether they develop an immune response to SARS-CoV-2 that provides protection against reinfection. Eligibility: People age 18 and older who have recovered from documented COVID-19 or were in close contact with someone who had COVID-19 but did not get the infection Design: Participants will be screened over 2 visits. During visit 1, they will answer questions about any symptoms they are having and will be tested for SARS-CoV-2 infection which will involve a nasal swab sample or other FDA approved test. If the test is negative, they will proceed to the second visit, which will include: Physical examination Medical history Mental health interview (which may be recorded if the participant agrees) Chest x-ray (for recovered COVID-19 participants only) Blood and urine tests Pregnancy test (if needed) Lung function test (for recovered COVID-19 participants only) 6-minute walk test (for recovered COVID-19 participants only) Questionnaires about their general and mental health Leukapheresis to collect white blood cells (optional). Participants will be put into 1 of 2 groups: the COVID-19 group or the close contact group. Participants will have study visits every 6 months for 3 years. They will repeat some of the screening tests. Participants in the COVID-19 group may have visits more often if they develop symptoms that suggest re-infection with SARS-CoV-2....
Antioxidants, and particularly polyphenols, have shown protection in respiratory pathologies, which is related to the decrease in the severity of the clinical picture and suppression of inflammation. This suppression of inflammation may be related to the inhibition of NF-kB polyphenols, where its activation is related to the stimulation of 150 stimuli including cytokines (IL-1β, IL-6, THF-α, GM-CSF, MCP-1), TLRs, among others. There may be other additional mechanisms that can help control virus-induced respiratory pathologies, among which are the regulation of reactive oxygen species (ROS) associated with tissue destruction caused by the virus and a selective antiviral action can be reported. direct. The standardized P2Et extract obtained from C. spinosa, by the Immunobiology Group of the Pontificia Universidad Javeriana, is highly antioxidant, decreases lipid peroxidation and tissue damage and induces complete autophagy in stressed or tumor cells. The induction of a full autophagic flow could inhibit the replication of beta-coronaviruses like SARS-CoV-2. Furthermore, P2Et can decrease the factors involved in tissue damage by reducing IL-6 and decrease ILC2 cells of the lung in animals with lung metastases (unpublished data). These antecedents suggest that the supplementation of patients with COVID-19 with the extract P2Et, could improve their general condition and decrease the inflammatory mediators and the viral load.
This is a prospective study analyzing the development of humoral immune response against SARS-Cov-2 in patients with previous Covid19: the aim is to compare the incidence, titration and evolution of IgG an IgM in a prospective cohort of liver transplant patients surviving to the first wave of Covid19, in comparison to not inmmunossupressed patients.
The leading cause of death in patients with COVID19 is a severe inflammatory response caused by a cytokine storm that results in acute respiratory distress syndrome and acute pulmonary insufficiency, as well as dysfunction of several vital organs. Therefore, preventing the occurrence of uncontrolled inflammation is the main goal of the ongoing clinical trials. Chloroquine and tocilizumab, which have the best results, are also prescribed to control inflammation. But it can be said that treatments are the main source of inflammation. Inflammasome NLRP3 is one of the mechanisms involved in many severe inflammatory disorders. Inflammatory activation has already been demonstrated by many viruses. Melatonin, on the other hand, is a hormone in the body that can inhibit Inflammation NLRP3 in addition to various anti-inflammatory effects, especially after severe inflammation. Older adults with lower levels of melatonin and children with maximum levels of melatonin are the risk groups and low-risk groups for the disease, respectively. In the present study, while measuring melatonin in patients with COVID19, its effectiveness as a treatment method along with the common antiviral drug regimen in patients with severe disease will be evaluated.
COVID-19 is a rapidly evolving pandemic with approximately 5% of all patients which require intensive care unit admission. In critically ill patients infected with COVID-19, approximately 15% had severe shock requiring medications to increase blood pressure. It appears that blood vessel tone is altered and microcirculation is not well regulated in patients with COVID-19. The underlying pathophysiology and contributing factors are unknown. The association with subsequent organ dysfunction and outcome is also unclear. Therefore, the investigators aim to investigate serial changes of relevant biomarkers in this population to improve the understanding of this disease, to investigate the association with clinically important outcomes and to find out how best to treat patients. The data will serve to develop strategies for individualised management of this high-risk group.
The COVIDHELP study will prospectively evaluate the yet unknown clinical course of the COVID-19 infection in cancer patients and document the impact of potential infrastructural limitations on cancer care of COVID-19 positive patients. All patients consenting will provide peripheral blood samples for prospective biobanking with the aim of investigating immune response and immunity against COVID-19.