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 18 of 18 for “"hair cortisol"”.
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An Investigation of Hair Cortisol as a Biomarker of Long-Term Stress in Beef Cattle
… extensively, making repeated sampling difficult. Hair cortisol (HC) has been proposed as a measure of systemic cortisol over an extended period of time, accumulated over a period of days to weeks, however its usefulness in beef cattle has not yet been investigated. Therefore, the objective of this …
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LC-ESI-MS/MS quantification of hair cortisol, cortisone and DHEA in combined oral contraceptive users
… COCs have varying effects on the stress hormone, cortisol, and stress-related symptoms. Previous studies often do not differentiate between COC compositions and most lack appropriate long-term measurement of biologically active free cortisol. In this study hair cortisol, as a measure of long-term …
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The role of stress in the pathogenesis of Alopecia Areata: an objective assessment via hair cortisol level
… evidence that stress causes or exacerbates AA. Hair cortisol measurement has been proven to be a reliable biological marker for cumulative prior stress. This measurement has up to date not been used in AA cases and may provide convincing evidence in the debate of stress and AA. OBJECTIVES: The …
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The Use of Hair Cortisol as a Biomarker of Chronic Stress in Patients with a recent Acute Myocardial Infarction
… Since an MI is a stressful life event, plasma cortisol levels are expected to increase significantly from the baseline. Cortisol and dehydroepiandrosterone (DHEA) as products of the hypothalamicpituitary-adrenal (HPA)-axis have been used to diagnose endocrine disorders in serum, urine and …
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Patients with severe cutaneous adverse drug reactions have extremely high hair cortisol concentrations that do not correlate with presence of depression.
Background: Hair cortisol concentrations (HCC) +/- DHEA, a depression and stress biomarker has not been studied in severe cutaneous adverse drug reactions (SCAR). Objective: To determine DHEA/HCC correlation with SCAR-associated depression and compare the ratio with published values. Methods: …
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Patients with severe cutaneous adverse drug reactions have extremely high hair cortisol concentrations that do not correlate with presence of depression.
Background: Hair cortisol concentrations (HCC) +/- DHEA, a depression and stress biomarker has not been studied in severe cutaneous adverse drug reactions (SCAR). Objective: To determine DHEA/HCC correlation with SCAR-associated depression and compare the ratio with published values. Methods: …
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An assessment of nurses’ experiences of work related stress through self-reporting and hair cortisol analysis, in a metropolitan hospital in Western Australia
… of self-administered questionnaires and hair cortisol, an objective stress biomarker, was utilised to measure stress levels and to relate these to practice area, age and experience. Questionnaire results indicated that there was a higher level of perceived stress for 40% of this cohort of …
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The effect of dog-human interaction on cortisol and behavior in registered animal-assisted activity dogs
… welfare of these animals has been questioned. Cortisol, in conjunction with stress-associated behavior, has been utilized as an objective assessment of animal welfare. Objective: Salivary cortisol and behavior in AAA dogs were measured to test the null hypothesis that salivary cortisol …
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Behavior and Physiological Responses of Livestock Under Different Grazing Systems
… (ADG), intravaginal temperature, and degree of hair shedding were recorded during the grazing period. Blood samples were collected through coccygeal venipuncture and hair was collected from the left rump for cortisol analysis. Ear, tail, and hoof temperatures were collected for each heifer using …
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Strategies to improve fertility of Bos taurus beef females enrolled in estrous synchronization protocols
… and classified as adequate or excitable. Hair and blood were collected for cortisol evaluation. Pregnancy rates were greater for adequate temperament heifers. Circulating cortisol concentrations were greater for excitable heifers, and overall plasma and hair cortisol concentrations were …
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Cortisol secretion in saliva and hair: methodological considerations and relationships with state and trait well-being
Cortisol secretion follows a distinct circadian rhythm characterised by a nadir in early sleep, gradually increasing concentrations during late sleep, peak levels at 30-45 minutes post awakening (the cortisol awakening response: CAR) and a declining pattern thereafter. Salivary cortisol enables …
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Stress Reactivity Patterns in Breast Cancer Survivors and the Implications of Various Psychosocial Factors
… to the participants’ HPA activity as measured by cortisol responses (complementary to a previously published study in the laboratory). Results of Study 1 revealed no abnormal response to stress. Virtually identical alpha-amylase slopes were observed between breast cancer survivors and control …
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Applications of Hair as a Record of Systemic Exposure to Cortisol
Hair cortisol content (HCC) is a novel biomarker that uniquely captures retrospective systemic cortisol exposure. This thesis aimed to assess how different hair growth rates effect HCC timelines in Cushing’s and Addison’s patients, investigate the relationship between HCC and age, puberty, sex and …
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Zusammenhänge zwischen sozioökonomischen und anthropometrischen Daten und der Cortisolkonzentration im Haar gesunder Kinder
Hair cortisol concentrations (HCC) have been found to be related to various common childhood diseases, like otitis media, conjunctivitis, respiratory viral infections, and moreover asthma. However, the confounding effects of age, gender, body mass index (BMI), pubertal stage (Tanner stages), …
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Early neighborhood disadvantage and risk for internalizing problems: underlying neurobiological mechanisms
… (DMN), and salience networks (SN) were computed. Hair cortisol concentration (HCC) and perceived stress were measured for the full sample. For a subsample (N = 40), resting heart rate variability (HRV) was measured in a separate session after the MRI scan. Results showed that greater early …
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An Exploration of Relocation Decision-making and Experience: Wellbeing and Chronic Stress Outcomes for Older Under- Occupying Homeowners
… at Times (2) and (3) together with hair samples, for hair cortisol concentration (HCC) analysis of chronic stress. Depression, anxiety and stress measures were also taken retrospectively for Time (1). Two from each cohort had semi-structured interviews at Time (3). There were three …
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Under the Empire’s Eye: The Psychosocial Stress of Chimú Human Sacrifice (1100–1450 CE)
… applying palaeoendocrinology to preserved human hair. I analyzed hair cortisol concentrations (HCC) from 61 individuals, integrating these results with evidence of skeletal trauma, mortuary practices, and environmental instability linked to El Niño floods. Because hair records stress in monthly …
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Health and Welfare Implications of Temperament Differences in Dairy Cattle
… Measurements of physiological parameters, hair cortisol concentration, saliva cortisol concentration, heart rate variability and maximum eye temperature, were taken alongside behavioural testing to determine whether they were reliable indicators of temperament. Temperament testing was …