View clinical trials related to Hypersensitivity.
Filter by:The purpose of this study is to evaluate changes in oral health-related quality of life (OHrQoL) in participants suffering from Dentinal Hypersensitivity (DH) symptoms following the use of anti-sensitivity toothpaste for 24 weeks.
We aim to examine, whether hospitalization is associated with higher high-sensitivity cardiac troponin T (hs-cTnT) serum concentrations in patients without a cardiac disease.
The purpose of this study is to support long-term dentinal hypersensitivity (DH) relief claims of 0.454 percent (%) stannous fluoride (SnF2) containing toothpastes in China.
Conducting an analysis of the clinical performance of high-sensitivity cardiac troponin I, tested in the out-of-hospital setting, for ruling out cardiac origin in acute onset chest pain. Acute onset chest pain is a complex symptom to narrow down in the out-of-hospital setting. This is due to the difficulty of obtaining pertinent information over the phone, and the absence of validated dispatch scores or criteria. In France, the current standard of care relies on the rapid dispatch of Emergency Medical Response Teams along with a physician in patients presenting symptoms evocative of Coronary Artery Disease or Myocardial Infarction. Typical anginal pain includes retrosternal pressure pain radiating to the jaw, neck, or left arm. Diagnostic work-up includes anamnesis, physical examination, routine blood work, and ECG. In the absence of signification ST-segment modifications, the gold standard relies on trending serum Troponin T and I in the hospital setting . This study aims to analyze the clinical performance of high-sensitivity cardiac Troponin I assays (hs-cTnI) in the out-of-hospital setting using a point-of-care device ; Atellica VTLi (Siemens Healthineers)
Over 50% of patients with major depressive disorder (MDD) do not respond to initial treatment and relapse is common. In particular, comorbid depression and anxiety disorders are associated with more treatment resistance. Thus, there is a great need for novel, more targeted treatments. Transcranial direct current stimulation (tDCS) is a novel intervention that can be used to causally target neural excitability and plasticity in brain regions/circuits implicated in regulating mood and anxiety and emerging evidence suggests that it reduces threat sensitivity. Here the investigators propose to use tDCS to target threat sensitivity as a core symptom of anxious depression to determine if the investigators can engage the neural circuits that are treatment targets. Following the administration of a single dose of anxiolytic or antidepressant treatment, early changes in emotional processing have been observed in healthy people and clinical groups. Among patients, acute cognitive effects - such as a reduction in threat sensitivity - have been shown to predict response to drug and behavioral treatments. Functional magnetic resonance imaging (fMRI) studies have confirmed hyperactive amygdala and/or hypoactive prefrontal activity in patients, indicating an imbalance of activity within this cortico-limbic circuit that sub-serves threat identification (amygdala) and top-down control (prefrontal). Specifically, treatments aiming to remediate prefrontal/ amygdala dysfunction could be a critical target in patients exhibiting these deficits. Several clinical trials have shown that administration of frontal cortex tDCS is a potentially effective treatment for MDD. However, underlying mechanisms of action are unclear. To meet this gap, the investigators propose an experimental medicine study (target identification and initial target engagement paths) where 141 volunteers with anxious MDD will be randomized to receive a single session of active or sham tDCS in a parallel design. Threat sensitivity will be measured using task and resting state fMRI and potentiated startle electrophysiology. Preliminary data suggest reductions in behavioral threat sensitivity from a single session of frontal tDCS. This was followed up with an fMRI study which found that a single session of active vs sham frontal tDCS reduced amygdala response to fearful faces whilst simultaneously increasing frontal attentional control signals. This provides evidence that modulating activity in the frontal cortex inhibits amygdala response to threat, highlighting a potential neural mechanism for the behavioral reduction in threat sensitivity. In addition, this offers initial mechanistic insights into the efficacy of tDCS in clinical trials for the treatment of MDD and anxiety disorders, suggesting that threat sensitivity may be a suitable cognitive target. The current proposal builds on this to establish acute effects of frontal tDCS on amygdala response to threat (primary aim), frontoparietal response to threat (secondary aim), startle response under threat (secondary aim) and approach-avoidance-conflict (exploratory aim). The ultimate aim is to apply these multi-level acute findings to mechanistic clinical trials of tDCS, to test their prediction of treatment response (full model path) and improve patient outcomes.
Aluminium allergy is predominantly seen in children with small itchy nodules in the skin after vaccinations, so-called granulomas. We want to do an exposure study where aluminium allergic children have to eat aluminium pancakes for a short period of time. The purpose is to investigate whether a worsening of the children's symptoms can be detected, both itching of the granuloma, allergic rash on the skin and also the symptoms that are not measurable, such as headache, stomach ache and general agitation. We also want to examine the concentration of aluminium in the urine, which reflects the absorption of aluminum from the gastrointestinal tract.
The primary objective of this study is to determine the immediate efficiency of a six weeks regular stretching protocol on regional and distant pain sensitivity. It is hypothesised that regional and distant pain sensitivity will significantly decrease following six weeks of regular stretching. The secondary objective of the study is to determine the effect after four-week cessation of the stretching protocol on regional and distant pain sensitivity. If regional and distant pain sensitivity decrease following regular stretching, it is hypothesised that the analgesic effect will abate following four-week cessation.
To compare the efficacy to different profiles, direct head-to-head studies had been conducted. In one previous review study revealed that TG LASIK provided patient with better uncorrected visual acuity (UCVA) than WFO LASIK and WFG LASIK. In recent previous contralateral eye studies also showed that TG LASIK induced less postoperative higher-order aberration than WFO LASIK. However, these studies included only low-to-moderate myopia patients, for patients with high myopia (spherical equivalent > 6D), the effect of TG LASIK comparing with WFO LASIK had not been reported before. The aim of our study is to analyze and compare the visual performance of TG LASIK and WFO LASIK in high myopia and low-to-moderate myopia patients, , particularly UCVA, corrected distance visual acuity (CDVA), contrast sensitivity (CS), and wavefront aberration.
Background: Early childhood development is highly dependent on the sensitive care provided by their caregivers . Interventions focused on supporting parents to improve their sensitivity have been shown to be effective . The COVID-19 pandemic has had a great impact on mental health , with pregnant women and mothers of children under one year of age being an especially vulnerable group . On the other hand, access to mental health interventions in person is restricted by confinement measures , especially group interventions, so it is relevant to have remote interventions that support this group of mothers. Objectives: to evaluate the feasibility and acceptability of a group videoconferencing intervention to improve maternal sensitivity aimed at mother / infant dyads attended in Primary Health Care in Chile Methodology: a randomized pilot feasibility study will be carried out with a mixed design with quantitative and qualitative evaluations. A face-to-face group intervention with proven effectiveness will be adapted to videoconferencing format , then 50 dyads will be randomized in a 3: 2 ratio to receive the videoconferencing intervention ( n=30) or the delivery of educational brochures (n=20) . The feasibility and acceptability will be evaluated assessing the participation, adherence and satisfaction in a quantitative way, in addition the qualitative evaluation will be carried out through interviews and focus groups. Changes in clinical outcomes will also be evaluated: maternal sensitivity, depressive symptoms, postnatal maternal attachment and infant socio-emotional development. This pilot study will allow the identification of the key parameters for the implementation and evaluation of the intervention, which will allow the design of an effectiveness study in the future.
This will be a double-blind, randomized, three-arm parallel groups study of the effect of toothpastes containing Ca-hydroxyapatite (HAP), Mg-Zn-hydroxyapatite (Zn-Mg-HAP), or fluoroapatite (FAP). The aim of the study is to compare the effect of toothpastes containing Ca-hydroxyapatite (HAP), fluoroapatite (FAP), and Mg-Zn-hydroxyapatite (Mg-Zn-HAP) on dentin hypersensitivity associated with dental abrasion. Materials and methods. Thirty consent patients aged 35-45 with dentin hypersensitivity associated with abrasion will be recruited for the study. The study will have 2 phases: preparatory phase (recruitment of the patients, standardization of their oral hygiene protocols, wash-out period, calibration of the researchers and training) and the main part (double-blind, randomized, parallel groups study of toothpastes effect). Patients will be randomly divided into 3 groups (group 1 - toothpastes with Ca-HAP, group 2 - toothpastes with Zn-Mg-HAP, group 3 - toothpastes with FAP). Clinical examination will be performed at the baseline, after 2 and 4 weeks, and will include patient's interview, oral hygiene level assessment (OHI-S), and dentin sensitivity testing (Shiff's index). The null hypothesis is that there will be no statistically significant differences in dentin sensitivity level between the study groups.