Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 21 for “"TSST"”.
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Investigating the neuroendocrine and hemodynamic responses to physical and psychological stress tasks and their effects on endothelial-dependent flow mediated vasodilation using a sustained stimulus
… responses between the Trier Social Stress Test (TSST) and 5min cold pressor test with and without social evaluation (CPT, CPT+SE) and 2) to examine the impact of these stressors and cortisol elevation on EX-FMD. 59 healthy male subjects were randomly assigned to one of three conditions: TSST, …
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Comparing the Effects of Cognitive and Social Stress among Individuals with Headache
… more broadly, the Trier Social Stress Test (TSST) consistently has been shown to be a valid and reliable method of eliciting laboratory stress. However, this popular stress manipulation has not been previously used or promoted within the headache literature. The present study aimed to …
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Microbial interactions with epithelial surfaces.
… such as toxic shock syndrome toxin-1 (TSST-1), and staphylococcal enterotoxins B (SEB) and C. I hypothesize that superantigens are involved with the severity and fatality associated with these infections (likely by causing TSS). Few treatment options currently exist for preventing …
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The effect of subinhibitory concentrations of antibiotics on virulence factors of <i>Staphylococcus aureus</i> biofilms
… the superantigen (toxic shock syndrome toxin-1 (TSST-1)) production were evaluated in challenged and control biofilms, eluates and supernatants. Moreover, since sub-MICs of antibiotics have the potential to alter virulence and interfere with metabolic processes of the bacteria, the proliferative …
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The impact of acute psychological stress on spatial cognition
… were exposed to the Trier Social Stress Test (TSST; Kirschbaum, Pirke, & Hellhammer, 1993), a procedure designed to induce mild psychosocial stress. I used 3 different means to check the effectiveness of this stress induction: salivary cortisol, self-report via the Spielberger State-Trait …
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Exploring whether household pets buffer responses to a remote stress induction
… strides to modify the Trier Social Stress Test (TSST) to be administered remotely, with user-friendly and accessible means of collecting physiological measures of an acute stress response. Research regarding stress reactivity often examines stress buffering, the phenomena wherein the experience …
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Stress and decision-making in a Developing world context
… stress challenge (the Trier social stress test (TSST)) to induce stress in a randomized setting, we attempt to estimate the effect of stress on decision making with incentive-compatible outcomes. While demonstrating discounting patterns similar to other research in the developed world, this …
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Development of a Human Immune System from Hematopoietic Stem Cells in a Human/Mouse Xenogeneic Model
… the super-antigen toxic shock syndrome toxin-1 (TSST-1) resulted in the specific systemic expansion of human Vbeta 2+ T cells, release of human pro-inflammatory cytokines and localized specific activation and maturation of human CD11c+ dendritic cells. These results represent the first …
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Exploring the Pathophysiology of Chronic Depression: The Interplay between Depression, Cortisol Responses, and Personality
… responses to the Trier Social Stress Test (TSST) in CMDD participants (n=29) as compared to healthy controls (n=28). It was hypothesized that cortisol responses would be greater in the CMDD population. Results indicated that females with CMDD had increased cortisol output compared to female …
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Engineering soluble, high affinity T cell receptor domains for detection of staphylococcal and streptococcal exotoxins
… C (SEA, SEB, SEC), toxic shock syndrome toxin-1 (TSST-1) and streptococcal pyrogenic exotoxins (SpeA, SpeC) that possess superantigenic properties, by virtue of which they stimulate a large fraction of an individual’s T cells, leading to hyperinflammation and in some cases, organ failure and …
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The effects of acute stress on retrieval of visual and spatial material
… Pressor Test with the Trier Social Stress Test (TSST) into a single procedure: the Fear Factor Stress Test (FFST). Ninety participants completed one of three conditions: FFST-Stress, FFST-Control, or TSST. The FFST-Stress induced a more robust and sustained cortisol response than the TSST …
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Impact of the Serotonin-Transporter-Polymorphism (5-HTTLPR) and Stressful Life Events on the Stress Response in Humans
… (54-68 yrs.) with the Trier Social Stress Test (TSST). The Life History Calendar (LHC) and Life Events Questionnaire (LEQ) were used to acquire data on SLEs. While in newborns the S/S genotype showed a significantly higher acute endocrine stress response than L/L or S/L genotypes, no significant …
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Impact of nature window view on high school students stress recovery
… completed the standard Trier Social Stress Test (TSST) to induce stress. We measured stress three times throughout the experiment by asking students to self-rate their stress levels using a visual analog scale (VAS) questionnaireand by taking skin conductance and temperature measurements. Analyses …
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From the lab to the living room: examining challenges with the transition of heart rate variability measurement to real world contexts
… task component for the Trier Social Stress Task (TSST). We suggest that this task can be considered where participants are required to have multiple interactions with the TSST, and where external habituation effects, such as rehearsal effects. Study three (Chapter five) presents an adaptation of …
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Associations Between and Changes in Hippocampal Volume and the Cortisol Response Over Time: The Role of Childhood Maltreatment and Depression
… in their environment (Trier Social Stress Test; TSST), and neuroimaging in a magnetic resonance imaging scanner. Contrary to hypotheses, across both analyses cortisol reactivity and hippocampal volume were not significantly associated. However, cortisol reactivity but not hippocampal volume was …
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An examination of psychological stress and its effects on the mitochondrial DNA
… relationship using the Trier Social Stress Test (TSST), while a variety of methods have been applied in blood sample analyses. This study contributes to the progression of existing studies as a partial replication that employs a different experimental stress protocol (based on the International …
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Detection of staphylococcal enterotoxins in patients with rheumatoid arthritis or closed fracture
… B and C (SEB/SEC), toxic shock syndrome toxin 1 (TSST-1) and alpha haemolysin (AH), members of the pyrogenic toxin superantigen family (PTSAg). To develop a novel mass spectrometry method to analyse and compare urine samples from patients with rheumatoid arthritis (RA) and orthopaedic fracture …
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Análises in silico das proteínas de superfície e secretadas de Staphylococcus aureus para discriminar entre as mastites bovina clínica e subclínica
… a toxina 1 da síndrome do choque tóxico (tsst-1), a variante bovina da enterotoxina C (secbov), a enterotoxina t e dois homólogos da streptolisina S de Streptococcus pyogenes foram exclusivos da cepa RF122. A presença de polimorfismos de nucleotídeo único (SNPs) nos genomas subclínicos foi …
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Líneas genéticas, virulencia y resistencia a antibióticos en Staphylococcus aureus de diferentes orígenes: Análisis de marcadores de adaptación al huésped y comportamiento en Caenorhabditis elegans
… CC30, en su mayor parte portadoras del gen tsst-1. Este complejo clonal CC30, en su variante SARM y con presencia del gen pvl, fue detectado en el caso de forunculosis recurrente familiar. El siguiente objetivo fue determinar si la resistencia a la tetraciclina (TETR) era un buen marcador de …
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Autonomic and Behavioral Reactivity to an Acute Laboratory Stressor
<p>Stress has been widely shown to directly influence people’s emotional and behavioral processing as well as their underlying biological systems. This project examined physiological and behavioral responses as indicators of stress and coping in the context of a psychosocial stressor in a …
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