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 276 for “"follicle"”.
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Molecular Regulation of Hair Follicle Morphogenesis
… during embryogenesis. Morphogenesis of hair follicles is initiated when a series of reciprocal interactions between this undifferentiated ectoderm and its underlying mesenchyme leads to a localized invagination of epithelial cells. As hair follicle development proceeds, stem cells are …
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WNT SIGNALING AND HAIR FOLLICLE INITIATION
… the skin, and provides inductive cues for hair follicle initiation. Uniform Wnt signaling activity is present in dermal fibroblast precursors preceding hair follicle initiation, but the functional requirement of dermal Wnt signaling at early stages of skin differentiation and patterning remains …
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Merlin Mediated Regulation of Hair Follicle Morphogenesis
… these signals can result in disruption in hair follicle architecture, lack of differentiated cells and disease.</p> <p>Cells are able to transmit extracellular signals from the cell membrane to the actin cytoskeleton through the adherens junctions (AJ). The AJ is composed of the core proteins …
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Coordinating Stem Cell Behavior in the Hair Follicle
… or in response to acute injury. Remarkably, hair follicles naturally undergo repetitive cycles of regeneration and degeneration, a process that is accomplished with the support of stem cells within the hair follicles. It is this feature that makes this miniorgan an attractive model system to study …
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Toxicity of TCDD in the mouse antral follicle
… growth, and atresia of intact mouse antral follicles in vitro. Interestingly, TCDD has been shown to act mainly through binding to the aryl hydrocarbon receptor (AHR) in other tissues, and the AHR has been identified as an important factor in ovarian function. Thus, these studies were also …
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Specification And Function Of Early Hair Follicle Stem Cells
… in a quiescent niche associated with each hair follicle termed the "bulge" and are essential for cyclic bouts of hair growth. Bulge stem cells can also contribute to sebaceous glands and the intefollicular epidermis when it is injured. While hair follicles begin to develop during embryogenesis, …
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Drosophila Glypicans Regulate Follicle Stem Cell Maintenance and Niche Competition
… and Dally-like (Dlp), differentially regulate follicle stem cell (FSC) maintenance and FSC competitiveness for niche occupancy. We find that dally is essential for normal FSC maintenance while dlp mutant FSC progenitors outcompete normal FSCs and eventually occupy the entire epithelial sheet. …
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Specification of Stem Cells and Niche During Hair Follicle Morphogenesis
… my analysis on the earliest stages of hair follicle (HF) morphogenesis. Using immunofluorescence and live imaging, I found that in developing HFs, basal cell divisions are asymmetric and perpendicular to the basement membrane. These divisions result in differential levels of WNT signaling in …
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ULTRASOUND CHARACTERIZATION OF ANTRAL FOLLICLE DYNAMICS ACROSS THE ADIPOSITY SPECTRUM
… hormone pulse amplitude in addition to lower follicle stimulating hormone (FSH) and anti-Mullerian hormone (AMH) production, albeit controversial. These endocrine aberrations likely reflect alterations in antral ovarian follicle development, but this has never been systematically evaluated in …
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Expression pattern and role of Foxcl during hair follicle morphogenesis
… expressed in the epithelial cells of the hair follicles at all stages of embryonic skin development. In the developing hair follicles Foxcl promoter activity is induced at high levels in the post-mitotic precursor cells of the hair shaft, inner root sheath and sebaceous gland of the pelage hair …
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Investigation of regulatory functions of micrornas in skin and hair follicle development and cycling. A role of microRNA-214 in skin and hair follicle homeostasis.
… physiological processes, including skin and hair follicle (HF) development. In this study, the role for miR-214 in the skin and HF development and their postnatal physiological regeneration was investigated. miR-214 exhibits discrete expression patterns in the epidermis and HF in developing and …
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HEMODYNAMICS STUDIES OF THE PREOVULATORY FOLLICLE AND CORPUS LUTEUM IN CATTLE
… reproduction success at the farms. Evaluation of follicle and corpus luteum hemodynamics by color-Doppler ultrasonography is becoming more commonly used in cattle reproductive management. Improved understanding of the relationships between size and blood flow of the preovulatory follicle (POF) and …
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Factors affecting the quality and function of the bovine periovulatory follicle
… the follicular environment (specifically, follicle fluid) surrounding the oocyte during the maturation phase affects the ability of the cumulus-oocyte complex to progress through early embryonic development, and to investigate the relative effects of estradiol and progesterone on oocyte …
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The role of vascular endothelial growth factor isoforms in early follicle development
… vascularization of the theca layer increases as follicles progress in size through preantral and antral stages, the principal angiogenic factor, vascular endothelial growth factor A (VEGFA), may influence follicle growth via regulation of angiogenesis. However, VEGFA may also influence follicular …
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MicroRNA signature changes in human ovarian follicle in relation to reproductive aging
La classe dei piccoli RNA non codificanti è stata descritta comprendere differenti tipi di molecole che sono coinvolte in differenti fasi della sintesi, processing e traduzione dell’RNA così come la modulazione dell’inizio della trascrizione, la degradazione dell’RNA o il blocco della sintesi …
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The role of Ten Eleven Translocation enzymes in the hair follicle mesenchyme
… role during the morphogenesis of the hair follicle and the hair cycle. Work on hair regeneration is of importance as no products are available which can provide complete reversal of hair loss. Tet2 promotes DNA demethylation by the hydroxylation of 5mC to 5hmC which in turn causes gene …
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Exploring Polarized Membrane Protein Distribution in Drosophila Follicle Cells using Proximity Labelling
… the electron-rich ECM at the basal side of follicle cells, generating artefactual basal enrichment. By titrating biotin-label concentration and minimizing labelling duration, I optimized labelling conditions to restore the expected proximal biotinylation signals. Using HRP-tagged …
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Evaluation of the Ovulated Follicle Technique as a means of Determining Pheasant Production
<p>A study of the ovulated follicle technique for determining egg production in pheasants was conducted during 1967 - 1969. Evidence indicated collection of wild hens for follicle counts should be between 5 and 14 weeks after cessation of laying. Questionable follicles encountered should be …
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Generating hair follicle inductive dermal papillae cells from adipose derived mesenchymal stem cells
… a dermal layer and skin adnexae including hair follicles and sebaceous glands. This results in a loss of pliability and contractures that cause functional and cosmetic impairment. Embryological hair follicle morphogenesis results from a complex series of mesenchymal-epithelial interactions and …
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