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 “"Skin pigmentation"”.
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The effect of cutaneous vasculature on skin pigmentation
… RT-PCR 6 J. RNA sequence analysis 7 K. Ex vivo skin organ culture and pigmentation assay of cultured skin 7 L. Statistical analysis 8 III. RESULTS 9 A. Preliminary study 9 1. Effect of HUVECs on the proliferation of fibroblasts 9 B. The presence of endothelial cells has a negative effect on …
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Mapping the Dorsal Skin Pigmentation Patterns of Two Sympatric Populations of Ambystomatid Salamanders, <em>Ambystoma opacum</em> and <em>A. maculatum</em> from Northeast Tennessee.
… species, ii) what traits influence the dorsal skin pigmentation and how, iii) whether gender differences in developmental stability occur, and iv) the extent of phenotypic variation within each species. The findings of this study revealed SSD in both species of salamanders. The most …
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Wnt Modulators, Secreted Frizzled Related Protein (sFRP) 2 and Wnt Inhibitory Factor (WIF)-1, Stimulate Melanogenesis in Normal Human Melanocytes
… Previous studies showed that hyperpigmentary skins of melasma express high levels of frizzled-related protein 2 (sFRP2) and Wnt inhibitory factor-1 (WIF-1) compared to perilesional normal skins. In this study, I investigated the functional roles of sFRP2 and WIF-1 on skin pigmentation. The …
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Thermal effects upon human vibratory sensitivity
… with regard to future work in the area regarding skin pigmentation and subject age.
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Pleiotrophin inhibits melanogenesis in normal human melanocyte
… effects of PTN on the melanocyte function and skin pigmentation. In this study, we investigated whether PTN would affect melanogenesis. PTN was expressed in melanocytes and fibroblasts of human skin. Transfection studies revealed that PTN decreased melanogenesis, probably through MITF …
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Axon guidance in the zebrafish visual system: Analysis of Esrom Mutant
… for axon fasciculation, targeting, branching and skin pigmentation. In the visual system esrom is necessary for the formation of topographic map along the A-P and D-V axis, correct innervation of the pretectal targets and axon bundling in the optic tract. The gene function is required in the eye …
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Clinical applications of quantitative photoacoustic imaging
… clinical translation of photoacoustics: tackling skin colour bias, applying it to a new disease and improving the transparency of computational methods. To characterise the effects of skin colour on photoacoustic imaging, I carried out a technical study using simulations, tissue-mimicking …
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Iron deficiency affects spatial learning in neonatal piglets
… were reduced in piglets fed deficient diets. Skin pigmentation, as measured by a colorimeter in L*a*b* color space, showed reduced magenta color in the iron deficient piglets (P < 0.0001), correlating with hematocrit levels (R2 = 0.76). The effect of iron deficiency on cognition was assessed …
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A review of serum 25-hydroxyvitamin D levels in Alaska native and non-natives in southwest Alaska
… sun exposure, high body mass index, and darker skin pigmentation increase risk for Serum 25-hydroxyvitamin D [25(OH)D] deficiency and insufficiency. <br /><br /> <em>Purposes of the Study:</em> To evaluate the incidence of 25(OH)D insufficiency and deficiency in Southwest Alaska, differences in …
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Effect of Electrode Size, Shape, and Placement on Electrical Current and Subject Comfort During Electrical Stimulation
… to allow for diversity in age, sex, and skin pigmentation. Subjects sat in a custom designed multi-positional chair, which allowed precise positioning of each extremity. After determining the maximal voluntary contraction (MVC) of the muscle and careful determination of the motor point, …
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Nonlinear models with measurement error: Application to vitamin D
… for example, status depends on sun exposure, skin pigmentation, adiposity and several other environmental and physiological factors. A biomarker for vitamin D status is a person's 25-hydroxyvitamin D (or 25(OH)D) serum level. From a practical viewpoint, we cannot make public health …
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Screening for Acanthosis nigricans: Analyzing the Correlation between Socio-economics and Acanthosis nigricans
… to the prevalence rate of schoolchildren with a skin pigmentation condition called acanthosis nigricans demonstrates that causal factors, such as ethnicity and obesity, can make children more at-risk for obtaining this condition which results from hyperinsulinemia. Currently, states, such as …
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"Passing women": gender and hybridity in the fiction of three female South African authors
… by internalised inferiority, and how arbitrary skin pigmentation is deemed to decide their fate. Chapter 5: I draw together the common themes found in the three works of fiction, and draw inferences from my findings about the representation of coloured women.
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A-to-I RNA Editing in Human Cells
… disease that manifests in the brain and skin, and dyschromatosis symmetrica hereditaria, a skin pigmentation disorder. ADAR1 is the primary A-to-I editor of RNA in humans, and the majority of edit sites are found in a class of repetitive elements called Alu, many of which are located in …
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Melanocyte proliferation in wounded skin in vitro: a histological and immunohistochemical analysis
Wounding of skin initiates a complex series of overlapping cellular events that culminates in the formation of a scar. The negative consequence of most cutaneous scars is the lack of adequate repigmentation of the neoepidermis. In order to effect successful wound healing by restoration of effective …
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Illuminating the Drivers of Genomic Diversification in Lamprologine Cichlids of the Lower Congo River
… reduction, loss of image formation, and loss of skin pigmentation, are not clearly understood. I investigate whether previously suggested loss-of-function mutations are present across five additional whole genomes of the cryptophthalmic <em>L. lethops</em>, and also look for signatures of hard …
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Improving Awareness of Skin Cancer in Organ Transplant Recipients of Color
Organ transplant recipients are at high risk for skin cancer. Currently, more than half of the transplant waiting list is composed of skin of color patients. Skin cancer in skin of color is associated with higher morbidity and mortality and has a different clinical presentation and risk factors. …
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Ancestralidade como fator de risco para hipotireoidismo: estudo da coorte ELSA-BRASIL
Introduction– Genomic ancestry refers to the genetic relationship between an individual and their ancestors, from whom they biologically descend. The self-reported ancestry of the Brazilian population is subject to important genomic divergence and there are sensitive markers capable of stratifying …