8 Clinical Trials for Various Conditions
The proposed project tests the hypothesis that salivary alpha amylase concentration is a reliable biomarker of the effect of transdermal vagus nerve stimulation (tVNS) in humans.
The purpose of this study is to investigate how healthy youth and adults' cortisol levels and other hormone levels relate to anxiety levels while they participate in a behavioral task called the Trier Social Stress Task. Data from these healthy participants will also be compared to those of anxious youth and adults collected as part of the in the Principal Investigator's ongoing study titled, "Child/Adolescent Anxiety Multimodal Extended Long-term Study (NA00035687)."
Patients with Obstructive Sleep Apnea Syndrome (OSAS) will evidence higher levels of salivary cortisol and alpha-amylase levels prior to use of placebo and continuous positive airway pressure (CPAP) and will evidence a decrease in these levels after consistent use of continuous positive airway pressure (CPAP) therapy as compared to placebo. Their level of sleepiness will also decrease with the use of CPAP therapy and will correlate with the levels of salivary cortisol and alpha-amylase in relation to their subjective sleepiness scale, Psychomotor Vigilance Test (PVT), and pupillometry.
The current study utilized a randomized controlled trial, conducted in a real-life setting, to determine whether, how, under which conditions, and for whom, infusing various levels of human-animal interaction (HAI) in a 4-week, university-based stress prevention program provides an effective approach to prevent negative ramifications of university students stress, promote student executive functioning and learning, while safeguarding animal welfare. This study will examine effects of sole exposure to evidence-based stress prevention content, hands-on HAI with registered PET Partner teams, or combinations thereof on students' moment-to-moment well-being and longer-term functioning in socioemotional, cognitive and physiological domains.This study will also develop a comprehensive coding system and measure the dynamic nature of behavior of participants, handlers and animals during university- based animal assisted activities, as well as the HAI environment. The data and analyses will then be utilized to inform the development of a quantitative measure to capture of the quality of human animal interaction in various settings to experimentally determine causal pathways underlying program effects on humans and animals.
Pediatric patients are susceptible to show signs of fear. One of the scenarios that have always been a source of fear is undergoing a dental procedure. Fear of undergoing dental procedure has been addressed as "dental fear", which can lead to avoidance of receiving dental care and may result to a decline in proper oral hygiene. Fear stimulates multiple cerebral responses and can be often related to an increased stress level. Stress level fluctuations during dental procedures can be examined by blood and salivary biomarkers. Given accessibility and minimal invasiveness, the collection of saliva samples constitutes an easy and cost-effective diagnostic method to investigate a variety of oral and systemic conditions. Cortisol and alpha amylase are present within the saliva and their levels are supposedly influenced by stress. In contrast, salivary IgA is not known to be influenced by stress level and can be used in comparison as a non-stress salivary biomarker. Fear of dental appointments is a well-known cause of stress and activation of the sympathetic nervous system in adolescents undergoing dental procedure. However, the examination of stress and stress-related factors in young individuals attending their first dental appointment compared to young individuals who present for an orthodontic application is largely understudies. Therefore, the aims of the study are: 1) to measure stress salivary biomarkers in pediatric patients before undergoing dental and/or orthodontic procedures; 2) assess whether subjective stress to dental treatment (as measured by dental anxiety, stress, and dental fear) is associated with objective stress measurements (as measured by collection of stress salivary biomarkers).
The study will examine changes in acute stress (biological and psychological) via salivary cortisol and alpha amylase levels as well as survey measures of self-reported anxiety in response to either (a) a free online guided mindfulness meditation available at (https://www.uclahealth.org/marc/mindful-meditations); (b) a guided mindfulness meditation via virtual reality (https://guidedmeditationvr.com/) or (c) a virtual reality platform of historic photographs and written narratives (https://lookingglassvr.com/). Participants will also complete an interviewer administered survey to measure sociodemographic factors, mental and physical health status, substance use, and medication use and provide a hair sample to measure cortisol.
The impact of well-known risk factors for such disorders (stress, biological sex, anxiety-related dispositions) on fear generalization will be examined. Findings from this study may provide insight into how these risk factors influence the development and/or maintenance of psychological disorders that involve overgeneralization of fear and could facilitate future approaches to their treatment.
A clinical trial that uses personal digital assistants (PDAs) to assist in examining the relationship between self reported stress, an objective biochemical indicator of stress (salivary alpha amylase) and self-reported dietary lapse among type 2 diabetic adults who are interested/undergoing in weight loss.