COVID-19 Clinical Trials and Expanded Access

Currently, SARS-CoV-2 the novel member of the corona virus family, affecting the world leading to COVID-19 disease. It can result life-threatening condition by developing severe acute respiratory distress syndrome (ARDS). Based on previous evidence a group of patients with severe COVID-19 develop a cytokine storm syndrome which leads to hyper-inflammation lung tissue damage. Supportive care is the current management of COVID-19 is and management of ARDS as a main cause of mortality has been remained challenging. Therefore, an urgent effective treatment of COVID-19 regarding hyper-inflammation mechanism is required. Currently, development of novel anti-viral agents and vaccines are the main issues. However, it needs long time, from months to years, until suitable new medications and vaccines have been developed. An immune-modulatory tetra deca peptide (14-mer peptide) named Human Ezrin Peptide 1 (HEP-1) (trade name Gepon) was introduced by the group of Ataullakhanov in Russia. Regarding its proved anti-viral and anti-inflammatory effect, Russian authorities approved Gepon for treatment of ulcerative colitis treatment and Hepatitis -C. In this regard, it seems that Hep-1 is a very safe immune-modulatory agent which can be effective in the management of COVID-19 infection without any adverse effect for the patient.

This is a multicenter, randomized, open-label, controlled trial to evaluate the effectiveness and safety of Rhea Health Tone® as add-on therapy in hospitalized adults with COVID-19. The study is a multi-center trial that will be conducted in up to approximately 2 sites nationally. New sites may be added as needed after appropriate assessment. Interim monitoring will be conducted to evaluate the arms and for safety and effectiveness. Any change would be accompanied by updated sample size. Subjects will be assessed while hospitalized. All subjects will undergo a series of laboratory (inflammatory biomarkers (IL-6, hs-CRP, IFNγ), SGOT, SGPT and Creatinine, conversion rate by PCR, QTc prolongation by ECG, chest X-ray), clinical (clinical assessment, vital sign, concomitant medication, other medical conditions) and safety assessment (serious adverse event). Randomization will be performed 1:1 for each arm. Arm 1 = Standard of Care (SoC) alone, arm 2 = SoC + Rhea Health Tone®.

Efficacy of Aerosol Combination Therapy of 13 Cis Retinoic Acid and Captopril for Treating Covid-19 Patients Via Indirect Inhibition of Transmembrane Protease, Serine 2 (TMPRSS2) Severe acute respiratory syndrome coronavirus 2 (SARS-COV-2) has infected over 20,000,000 people causing over 700,000 deaths. It has no 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). Transmembrane protease, serine 2 (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. Transmembrane protease, serine 2 (TMPRSS2) is an androgen receptor signaling target gene and an androgen-regulated cell-surface serine protease expressed predominantly in prostate and lung epithelial cell. TMPRSS2 is normally expressed several folds higher in the prostate relative to any other human tissue, though the normal physiological function(s) remains unknown. A study found that dihydrotestosterone (DHT) s a potent activator of TMPRSS2.On the other hand, Feily et al noted that low-dose isotretinoin (0.5 mg/kg/day for 15-20 weeks) in PCO patients with moderate to severe nodulocystic acne resulted in significant decreases in levels of serum total testosterone, prolactin, and dihydrotestosterone A study demonstrated that 13- cis -Retinoic acid competitively and reversibly inhibits dihydrotestosterone. Therefore, we suggest that 13- cis -Retinoic acid will downregulate TMPRSS2 expression thorough temporary preventing the effect of dihydrotestosterone (DHT) on the activation of TMPRSS2 gene expression. ACE inhibitors and ARBs are commonly taken by heart patients to reduce blood pressure and to treat heart failure.Earlier studies had cautioned that this class of drugs could possibly increase the risk for the novel coronavirus, SARS-CoV-2, infection and elevate COVID-19 severity. There is conflicting observational evidence about the potential clinical impact of ACE inhibitors and ARBs on patients with COVID-19. Select preclinical investigations have raised concerns about their safety in patients with COVID-19. On the other hand, Preliminary data hypothesise that angiotensin-converting enzyme (ACE) inhibitors and renin-angiotensin- aldosterone system (RAAS) inhibitors could benefit patients with COVID-19 by decreasing acute lung damage and preventing angiotensin-II-mediated pulmonary inflammation. Here in our review, we use established and emerging evidence based on the findings of previous studies and researches to propose that ACE inhibitors may benefit patients with COVID-19 via attenuating and abolishing the effect of androgenic hormones on inducing the expression of Transmembrane protease, serine 2 (TMPRSS2), even though, at the same time, ACE inhibitors cause an increase in the human cell surface receptor protein ACE2 which the novel coronavirus uses to enter and infect cells. A study on hypertensive rats demonstrated that using ACE inhibitors(captopril) abolished and attenuated the effect of dihydrotestosterone (DHT). In this study RAS inhibition exhibited beneficial effects on androgen-induced obesity and abolished the androgen-mediated increase in blood pressure (BP) observed in this model of PCOS. (83 ± 1 vs 115 ± 3 mmHg, p

This project will provide novel data using a large cohort of more than 3000 transplanted patients. Risk and protective factors for SARS-CoV-2 infection and COVID-19 disease severity will be identified. The proportion of patients who develop antibodies after infection will be revealed. In this way the presence of these antibodies can be evaluated as a test for prior infection. Our study additionally will demonstrate how long these antibodies remain present and whether they are protective against a new infection.

Critically ill patients requiring intensive care suffer to a large extent from cognitive deficits involving higher brain functions that primarily affect memory, learning and the ability to concentrate. While the background to this effect is not fully understood, there are growing evidence to support mechanisms related to neuro inflammation and changes in blood flow with concomitant ischemic brain damage. Patients with covid-19 often suffer from severe inflammatory activity with an increased risk of coagulation abnormalities and brain damage. Covid-19 patients requiring intensive care develope more severe impairment of neurological and cognitive function than critically ill intensive care patients who have not covid-19. This project therefore aims to map the link between inflammation, immunology and coagulation systems as well as biochemical and structural changes in the brain with cognitive effects in patients in intensive care for covid-19.

The identification of patients with genitourinary tumors who suffer from the infection by the Serious Acute Respiratory Syndrome Corona-Virus 2 (SARS-CoV-2) virus can represent multiple benefits both for themselves and for health professionals and the health system itself. We would be able to know more precisely the clinical evolution of these type of patient, to know their prognosis and being capable to select the most appropriate treatment modality for future pandemics. SOGUG-COVID is an observational prospective-retrospective trial purely epidemiological, that aims to describe the population with genitourinary tumors (urothelial cancer, prostate cancer, testicular cancer and kidney cancer) infected by COrona VIrus Disease 19 (COVID-19) treated in Spanish hospitals, learn about the clinical presentation, therapeutic evolution and prognosis of said intercurrent infectious process, as well as its possible relationship with different clinical and therapeutic factors.

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.

Combination of Chemopreventive agents (All- Trans Retinoic Acid and Tamoxifen) as potential treatment for the Lung Complication of COVID-19 Abstract Angiotensin-converting enzyme (ACE2) protein found on the cell membranes is the target of SARS-CoV-2 for entering into the host cells. Viral spike protein-binding with ACE2 down-regulates it. As ACE2 is known to protect the lung from injuries, SARS-CoV-2-induced ACE2 deficiency may expose patients to lung damage. In this Review, we use established and emerging evidence based on the findings of previous studies and researches to propose a testable hypothesis that Combination of chemopreventive agents (All Trans Retinoic acid and Tamoxifen) can be tested to prevent inflammatory complication in severe acute respiratory syndrome coronavirus 2 infection via two mechanisms by inhibiting bradykinin B1,B2 receptors expression and upregulating the depleted ACE2 in COVID-19 . Bradykinin B1 receptors are not expressed under physiological conditions but are induced under inflammatory conditions. Here we hypothesize that permanent attack and invasion of COVID-19 to lung epithelial cells via binding to ACE2 leads to tissue injury and inflammation and that increases BK levels and BK-B2-receptor (B2R) stimulation A study reported that tissue injury and inflammation increases BK levels and BK-B2-receptor (B2R) stimulation. We suggest that Bradykinin mediates and induces lung injury, proinflammatory cytokines and inflammation likely precipitates life threatening respiratory complications in COVID-19. Further experiments showed that BK treatment stimulated IL-6 production On the other hand a study reported that cells treated with Retinoic acid and Tamoxifen for 48 h significantly decreased the BK-B2 receptor protein levels (70.3 ± 0.6% vs. 100% of control, P < 0.05). Retinoids inhibit bradykinin B1 receptor-sensitized responses and this action could participate in their anti-inflammatory and immunomodulatory effects. In addition retinoic acid, is known to possess in vivo anti-inflammatory, anti-platelet and fibrinolytic activities. A study investigated the in vitro thrombin and platelet aggregation inhibitory activities of retinoic acid and retinaldehyde.Retinoic acid, retinaldehyde and retinol exhibited potent inhibition of thrombin, with IC50 values of 67μg/ml, 74μg/ml and 152μg/ml, respectively for the inhibition of thrombin (Sigma); and 49μg/ml, 74μg/ml and 178μg/ml, respectively for the inhibition of thrombin (plasma). Amongst vitamin A and its derivatives, retinoic acid showed the highest inhibition of both the forms of thrombin. Beside the effectiveness of TAM on cancer cells, it also has other effects on numerous microbes including parasite, fungi, bacteria, and some viruses such as Ebola virus and human immunodeficiency virus (HIV).Furthermore Tamoxifen can block the action of interleukin 6 and inhibit neutrophils. A study demonstrated that tamoxifen has side effects associated with neutropenia. Since tamoxifen can cause neutropenia and subsequently influence the neutrophil-to-lymphocyte ratio (NLR) value In addition it has anti malarial effect similar to chloroquine In conclusion Keywords: COVID 2019 , Retinoic acid, Endosomal toll-like receptor 3,T Cells, IFN type1, AT1, ACE2,TMPRSS2

The objective of this trial is to evaluate the effect of the consumption of a probiotic strain on the incidence and severity of COVID-19 in elderly population living in a nursing home. In addition, it will be evaluated if the probiotic strain have some effect on the immune response generated by the Covid-19 vaccine inthis population.

This study is a randomized, double-blinded, and placebo controlled phase Ⅱ clinical trial of the SARS-CoV-2 inactivated vaccine to evaluate the safety and immunogenicity of the experimental vaccine in healthy adults ⩾18 years.