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 13 of 13 for “"Diurnal rhythm"”.
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The Relationship of Level of Traumatic Exposure, Perceived Stress, and Resilience with Salivary Cortisol and Salivary Alpha-Amylase Diurnal Rhythm in Palestinian Children 10-12 Years Exposed to Chronic War Violence
… cortisol and salivary alpha-amylase (sAA) diurnal patterns in Palestinian children, ages 10-12, living in a long standing war zone. Salivary cortisol, a surrogate marker of hypothalamic-pituitary-adrenal axis (HPA) activity, and salivary alpha-amylase, a surrogate marker of sympathetic …
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Inter-individual variation in saliva antioxidant status in relation to periodontal disease
… antioxidant capacity (TAA) which followed a diurnal rhythm (peak 5.OOpm, nadir 3.OOam). Salivary antioxidant flow rate was significantly lower in individuals with severe PD (TAA 0.2 10 ± 0.02 M/ml/min) than those with healthy gingivae (TAA 0.270 ± 0.02 iiM/ml/min) (p
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Η νυχθημερήσια διακύμανση της TSH σε νεογνά και βρέφη
… children and adults show a similar pattern of diurnal variation of TSH secretion with lower values at 11.00 h and higher around 23.00 h. The purpose of this study was to investigate the age of appearance of TSH circadian rhythm. In 57 full-term infants 0-6 months old and in 37- premature …
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Chronic kidney disease prevalence and ambulatory blood pressure profile in healthy HIV positive subjects pre and post anti-retroviral therapy
… population. Individuals with an abnormal diurnal rhythm and a blunted nocturnal decline in systolic BP (SBP), i.e. ≤ 10%, are referred to as 'non- dippers' and have the highest risk of cardiovascular complications4. HIV itself has been associated with a non- dipping status and may play a …
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Cortisol and inflammation in delirium and long-term cognitive decline after hip fracture
… investigated whether there is loss of cortisol diurnal rhythm (in saliva) with elevated afternoon cortisol levels. The thesis investigated whether any hypercortisolaemia was sustained during the year after delirium, and whether this was associated with deterioration in cognition during the year …
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Splicing The Clock Is Timeless: From Fruit Fly Behavior To Mammalian Retinal Degeneration
Circadian rhythms synchronize intrinsic cycles of physiology and behavior with diurnal environmental oscillations of light and temperature. Circadian transcription-translation feedback loops (TTFLs), in which the rhythmic expression of core clock proteins negatively regulates their own expression, …
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Role of 5-ht2c receptor density on behaviour in mice
… receptor is under the control of a monophasic diurnal rhythm and is in a position to alter circadian regulation and behaviour due to its expression in the suprachiasmatic nucleus (the light entrainable oscillator (LEO)). It was hypothesised that elevating expression of the 5-HT2C receptor would …
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Nitrate: metabolism and development
… in plants grown at different points of the diurnal rhythm and in response to an extended night period. In addition, we are interested in the effect of nutrient availability in the transition from vegetative growth to flowering and especially in nitrate as a metabolite that triggers …
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Correlated physiological responses in a bidirectional selection experiment for body weight in chickens
… were made in the evening, showing a diurnal rhythm between the day and evening measurements. To obtain more information on the metabolism of these lines, oxygen consumption was measured at 28, 42, and 56 days of age on a sample of S₁₃ generation males. The results agreed with those …
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Biology and impact of the New Zealand pea crab (Nepinnotheres novaezelandiae) in aquacultured greenlipped mussels (Perna canaliculus)
… increasing valve gape as a result. A natural diurnal rhythm was observed in P. canaliculus with decreased sensitivity to touch at night when crabs are almost exclusively active. This research indicates the likely use of a pheromone-based mate location system to greatly reduce the risks for …
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Die C 4 -spezifische Phosphoenolpyruvatcarboxylase in Zea mays L.: Modellsystem zur Signaintegration auf Chromatinebene in Pflanzen
… on the core promoter. In this study, the daily rhythm of histone modifications and promoter activity were analyzed. In the second half of the day, light-induced core promoter modifications are completely removed although plants are fully illuminated. By application of a histone deacetylase …
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Monogeneans of the Southern Fiddler Ray, Trygonorrhina Fasciata (Rhinobatidae) in South Australia: an exceptional model to compare parasite life history traits, invasion strategies and host specificity.
… C. australis hatch spontaneously with a strong diurnal rhythm in the first few hours of daylight when exposed to a LD12:12 illumination regime. Larvae are ciliated and can swim, have pigmented eyespots, are photo-positive and can remain active and survive for up to 24 h after hatching at 22ºC. …
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Cortisol perturbation in the pathophysiology of septicaemia, complicated pregnancy and weight loss/obesity.
… contains a light–entrained intrinsic CNS driven diurnal rhythm. Cortisol participates in a regulatory mechanism where inflammatory cytokines stimulate cortisol release and cortisol in turn suppresses cytokine release. The effects of cortisol in inflammatory states include elevating blood pressure …