View clinical trials related to Disease Progression.
Filter by:The goal of this observational study is to learn about epidemiology, biologic markers, disease subtypes and possible prognostic factors in essential tremor (ET) patients. The main question[s] it aims to answer are: - The prevalence of ET-plus compared to ET in a prospectively collected ET population. - To assess in detail the heterogenous group of ET patients using comprehensive clinical (motor and non-motor scales, questionnaires), imaging [magnetic resonance imaging (MRI), sonography of substantia nigra and cerebral vessels], neurophysiological (tremor analysis, digital spiral drawing) and laboratory markers (sGFAP, sNfL, routine laboratory parameters). - To assess possible non-invasive markers of neurodegeneration in ET patients (optic coherence tomography, alpha-synuclein in olfactory mucosa) Participants will be asked to undergo the above mention evaluation at baseline and at follow-up approx. 5 years later. Researchers will compare the findings within the ET group to independently existing cohorts of healthy controls and/or patients with other movement disorders like Parkinson's disease.
The primary goal of the present prospective cohort study is to evaluate the effect of varying incidences of BOP at implant sites across 15 months of maintenance visits on the probability of peri-implant disease progression. Over 15 months, participants will attend 6 visits where clinical measurements and maintenance care will be performed every 3 months.
The goal of the project is to determine the difference in immune activation and HIV reservoir size between People living with HIV (PWH) on tenofovir-containing antiretroviral therapy (ART) versus PWH on nucleoside reverse transcriptase inhibitor (NRTI)-sparing ART. Tenofovir (TFV), a phosphonated nucleoside reverse transcriptase inhibitor (NRTI), is being used for oral pre-exposure prophylaxis (PrEP). The investigators will test this hypothesis: tenofovir, and perhaps NRTIs in general, stimulate a type I/III interferon also in PWH who take these drugs. Because chronic interferon stimulation may promote the survival and proliferation of cells with integrated provirus, the investigators also hypothesize that these drugs antagonize decay of the HIV latent reservoir in PWH on ART. Consequently, the researchers hypothesize that PWH who have switched from NRTI-containing ART to NRTI-sparing ART exhibit lower type I/III interferon pathway activation and lower latent HIV reservoir size. The investigators also hypothesize that independently of treatment, the extent of type I/III interferon activation correlates with latent HIV reservoir size. Thus, the proposed study seeks to answer these two questions. Can the gastrointestinal epithelium be impacted by ART, and contribute to chronic immune activation and expansion of the HIV-1 reservoir? If so, what therapeutic approaches can the investigators implement to reduce the HIV-1 proviral load? The data will reveal pathways that can be targeted therapeutically to treat chronic immune activation in PWH. The findings of this study will immediately translate to optimize the standard of care in PWH.
Stroma is a fibrous, tough, transparent and the thickest layer of the corneae. The stroma is composed of organised collagen, which maintains transparency. Keratocytes are located between the lamella collagen fibers and secrete an extracellular matrix, which includes collagen, proteoglycan, crystalline proteins to maintain corneal transparency.
Investigators are going to conduct a randomized controlled trial that myopic children are randomly allocated into two groups: combined use of 1% atropine and 0.01% atropine (experimental group) and 0.01% atropine (control group) in order to explore a better way to control myopia progression and eliminate adverse effects at the same time, provide reliably evidence for clinical guideline of atropine use in children, and investigate the mechanism of atropine on eyes.
Determine safety of plasma infusion or exchange in APOE 44 patients.
In this follow-up trial, MRI and CT images of the lung will be acquired prospectively in a subcohort of 370 patients, three years after they successfully participated in the first COSYCONET subtrial with CT and MRI ("MR-COPD I", NCT (clinical.Trials.gov identifier) 02629432). The objective is to obtain longitudinal data from a well-characterized collective of COPD patients in order to identify suitable image-based biomarkers to improve the prognosis of disease progression of COPD in comparison to clinical tests
The Researchers are trying to determine the paths of change in imaging biomarkers of Dementia with Lewy bodies (DLB) and their associations with rate of cognitive and functional decline.