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NCT ID: NCT04653922 Recruiting - Keratoconus Clinical Trials

Evaluation of Safety and Efficacy of a Bioengineered Corneal Implant for Treatment of Keratoconus

LinkCor
Start date: November 2016
Phase: N/A
Study type: Interventional

This is a prospective, Phase I open-label safety study to evaluate the safety, feasibility and initial efficacy of a bioengineered corneal stromal substitute after implantation into the stroma of adults with advanced keratoconus. The bioengineered substitute and implantation technique may provide a less invasive treatment option for advanced keratoconus than current surgical approaches, that additionally does not rely on the limited availability of human donor corneal tissue.

NCT ID: NCT04642755 Recruiting - Malnutrition Clinical Trials

Comorbidities and Coinfections in Latent TB

COMBINE-TB
Start date: April 19, 2021
Phase:
Study type: Observational [Patient Registry]

Approximately 2 billion people worldwide are infected with Mycobacterium tuberculosis (TB), with 90% of individuals having latent infection (LTBI). The control of TB requires clearly delineated helper T cell (Th) 1 responses and, to a lesser extent, Th17 responses, which both play important roles in the induction and maintenance of protective immune responses in mouse models of TB infection and in the prevention of active disease, as seen in LTBI. During latency, M. tuberculosis is contained in localized granulomas. Mycobacteria specific T cells mediate delayed type hypersensitivity reactions to purified protein derivative (PPD), and this reaction is generally considered to indicate an LTBI status in the absence of demonstrable active infection. Among the various risk factors that are known to play a role in promoting active TB, HIV is the most well studied and described. However, in low-HIV-endemic countries like India, other risk factors might play a more prominent role in active TB pathogenesis. These include malnutrition, diabetes mellitus (DM), and helminth infections. LTBI individuals with these comorbidities or coinfections could be at a higher risk for developing active TB than their "healthy" LTBI counterparts without these comorbidities. Thus, it is imperative to study the pathogenesis of TB infection and disease in these "at risk" populations. In this study, we will estimate the prevalence of severe to moderate malnutrition, uncontrolled DM, and helminth infections in LTBI-positive individuals. We will collect samples from a cohort of individuals with LTBI, those with LTBI and coexistent malnutrition, DM, or helminth coinfection, and those without any of these conditions. Individual participation may last up to 6 months. The main objective of the study is to estimate the prevalence of malnutrition, DM, and helminth infections in LTBI individuals. Simultaneously, we will perform transcriptomic, proteomic, and metabolomic assays, including profiles in serum and urine, to determine the biosignature portfolio of these individuals. In addition, immunological assays examining cytokine/chemokine signatures as well as other immune parameters related to innate and adaptive responses will be performed to enhance the understanding of the immunological cross talk between LTBI and malnutrition, DM, and helminth infections.

NCT ID: NCT04638647 Recruiting - Clinical trials for Autoimmunity, Inflammation

Secukinumab Open Label Roll-over Extension Protocol

Start date: December 22, 2020
Phase: Phase 4
Study type: Interventional

The purpose of this study is to assess long term safety in participants who have completed a Novartis trial with secukinumab, have been judged by the investigator to benefit from continued treatment with secukinumab, and are unable to obtain the marketed secukinumab formulation.

NCT ID: NCT04629820 Recruiting - Presbyopia Clinical Trials

PROductivity Study of Presbyopia Elimination in Rural-dwellers II

PROSPERII
Start date: August 3, 2023
Phase: N/A
Study type: Interventional

The investigators will conduct a randomized-controlled trial. The participants will be textile workers aged 35 years and above with uncorrected presbyopia who are employed by a single Indian garment manufacturer - employed by Shahi Exports Private Limited, Karnataka, India - at facilities equipped to measure individual productivity. PROSPER II will assess the impact of free reading glasses on productivity for workers in a textile factory.

NCT ID: NCT04629352 Recruiting - Schizophrenia Clinical Trials

Effect of Neuroplasticity Modulation in tDCS Treatment Response Among Schizophrenia Patients With Auditory Hallucination

Start date: December 1, 2020
Phase: N/A
Study type: Interventional

Schizophrenia is a severe neuropsychiatric disorder of the brain and is also one of the top ten disabling diseases. A common symptom of schizophrenia (SCZ) is hearing voices inside one's heads which others do not. Despite adequate medication, SCZ patients may continue to hear voices that are often rude or unfriendly and cause distress to the patients. Transcranial direct current stimulation (tDCS) is a safe, non-invasive brain stimulation technique that reduces 'hearing voices'. However, how and why add-on tDCS works is unclear. The brain can change itself in response to its environment; this is called neuroplasticity. tDCS possibly changes the brain's environment and/or enhances the brain's ability to respond favourably to its environment. This theory will be examined here by studying changes in brain functions before and after giving tDCS to schizophrenia patients hearing voices. The aim of this study is to examine the brain's neuroplasticity potential as the biological phenomena driving treatment effects of tDCS in Schizophrenia patients with clinically significant and persistent auditory verbal hallucinations. The secondary aims are to answer whether the brain's neuroplasticity potential in schizophrenia patients can predict their responsivity to tDCS treatment for auditory verbal hallucinations, and if chronicity of illness effects tDCS treatment response. The brain's neuroplasticity potential will be examined using neuroimaging and neurophysiological techniques that give information about the integrity of the brain's signal processing efficiency, the chemical concentration of certain bio-molecules within it, and how well different areas of the brain communicate with each other. With this information, the potential role of the brain's neuroplasticity potential in facilitating treatment effects of tDCS can be better understood. With this knowledge, it could be possible personalize tDCS treatment, profile tDCS responders and non-responders based on demographic and biological factors, and prescribe tDCS at the appropriate time within the illness course for maximal benefit to the SCZ patients.

NCT ID: NCT04627181 Recruiting - Clinical trials for Iron Deficiency Anemia

Do Iron And Vitamin B12 Injections Given Together, Improve Hemoglobin In Patients On Hemodialysis?

ALOHA
Start date: November 18, 2020
Phase: Phase 4
Study type: Interventional

A parallel group, quadruple blind, placebo-controlled, randomized control trial with 2x2 factorial design to determine the effect of simultaneous IV ferric carboxymaltose and IM hydroxycobalamin supplementation in anemic Indian HD patients

NCT ID: NCT04623606 Recruiting - Clinical trials for Osteogenesis Imperfecta

Boost to Brittle Bones - Stem Cell Transplantation for Treatment of Brittle Bones

BOOST2B
Start date: May 20, 2019
Phase: Phase 1/Phase 2
Study type: Interventional

An exploratory, open label, multiple dose, phase I/II trial (n=15) evaluating safety and efficacy of intravenous and intraosseous infusion of allogeneic expanded fetal mesenchymal stem cells (MSC) for the treatment of severe Osteogenesis Imperfecta (OI) compared with historical and untreated prospective controls.

NCT ID: NCT04622449 Recruiting - Anemia Clinical Trials

Etiopathogenesis of Anemia in Chronic Liver Disease

Start date: September 1, 2020
Phase:
Study type: Observational

Anemia is the most common complication of liver cirrhosis and is seen in 75% of cases. The etiology of anemia in liver disease is diverse and often multi-factorial. Given the diverse and sometimes multifactorial etiology of cirrhosis, it is difficult to determine the exact cause of anemia in these groups of patients. The most common type of anemia encountered in liver cirrhosis is normocytic normochromic anemia, attributable to the chronic inflammatory state. The key question in management of anemia in patients with liver disease which specific factor needs to be corrected to restore hemoglobin levels and improve overall clinical status and improve severity scores.

NCT ID: NCT04621812 Recruiting - Liver Cirrhosis Clinical Trials

Role of Fecal Microbiota in Predicting Graft Rejection and Sepsis Among Recipients of Living Donor Liver Transplant in First Year.

Start date: November 8, 2020
Phase:
Study type: Observational

Efficient immunosuppressive therapy and improved surgical techniques have developed liver transplantation as a well-established and life-saving treatment. The 1-year survival rate of approximately 85-90%. Acute cellular rejection (ACR) is one of the main causes of liver dysfunction (LD) after liver trans- plantation, occurring 30% to 70% of transplanted patients and potentially leading to allograft failure. In addition to ACR, presence of sepsis, drug injury, viral infections like CMV or recurrence of viral hepatitis is also other causes of graft dysfunction. Laboratory tests are commonly used as less invasive methods of monitoring allograft rejection, but they are not specific to rejection and are often elevated in other types of graft dysfunction too. Till date the immunosuppressive regimen in liver transplant recipient is considered as an art in absence of an objective measures of the immune state. Therapeutic drug monitoring has little value in the assessment of the immune state and is always used as a supportive guide. The development of specific immune monitoring assays to measure the net immunosuppressive state in a transplant recipient would allow a more individualized therapeutic regimen Patients with altered gut microbiota had more chances of infection and longer course of hospital stay. Probiotics could mediate beneficial effects in graft rejection. Dysbiosis activates T cells through PAMPS and causes the inflammatory injury in the graft liver. The studies shown that lower Eubacteria, Bifidobacterium, Faecal bacterium and Lactobacillus with abundance of Enterococcus and Enterobacteriaceae. They restored to near normal after transplant in majority. This is known that there is a dysbiosis in the natural history of ACLF or decompensated cirrhosis, and often correlated to complications like-endotoxemia, sepsis, worsening liver failure and poor survival. This has led to consider fecal microbiota modulation as an emerging therapy. Liver transplant and consequent recovery, there is over all change in the recipient homeostatic milieu as well as the immune milieu and the same may be happening to the gut flora too.It's well known that liver has animprint of resident gut flora. The preliminary rat model showed alteration of gut flora to predict the development acute cellular rejection before it happens. Similarly the risk of infection is more among transplant recipients with decreased microbial diversity after liver transplant. However the data is scanty and there is an urgent need to understand the mechanism.. The present study was necessitated in view of emerging role of gut microflora and its influence on immune remodeling for the prediction of infection, rejection and may be an early biomarker for the graft dysfunction. This may be of varied cause in liver transplant recipients along with its impact on overall immune status. Uniqueness of the present study will be to understand the mechanism of development of sepsis or graft dysfunction in due course of time using high-throughput tools of single cell analysis in whole blood and gut microbiota alterations among liver transplant recipient as a cause for graft dysfunction in first year of live donor liver transplant.

NCT ID: NCT04616326 Recruiting - Chronic Migraine Clinical Trials

A Study of Galcanezumab (LY2951742) in Participants 12 to 17 Years of Age With Chronic Migraine

REBUILD-2
Start date: November 25, 2020
Phase: Phase 3
Study type: Interventional

The main purpose of this study is to evaluate the efficacy and safety of galcanezumab for the preventive treatment of chronic migraine in participants 12 to 17 years of age. The primary objective is to demonstrate the superiority of galcanezumab versus placebo in the reduction of monthly migraine headache days across the 3-month double-blind treatment period.