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 13473 for “""In vitro" maturation"”.
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Factors influencing in vitro maturation of pig oocytes
The present studies were undertaken to investigate the effect of different medium supplements, the involvement of steroid hormones and the role of estradiol-17$\beta$ on in vitro maturation of pig oocytes. Cumulus oocyte complexes (COC) were obtained by aspiration of 2-5 mm follicles. The oocytes …
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Lipid Biosynthesis and Maturation Signals in Batrachochytrium Dendrobatidis In Vitro
… attributed to massive global population declines of frogs and salamanders. Many of the molecular mechanisms behind the growth and development of Bd and how the fungus invades and infects amphibian hosts are unknown. In this study, two aspects of Bd development were analyzed. Confocal …
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Strategies to improve in vitro maturation of human and mouse oocytes
Our knowledge of reproductive medicine has expanded rapidly since the birth of Louise Brown, the first baby to be conceived by in vitro fertilization (IVF) in 1978. In vitro maturation (IVM) of oocytes - a culture technique to support maturation of immature oocytes in vitro - could offer an …
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Maturation and Culture Media Effects on In Vitro Bovine Embryo Developmental Competence
<p><em>In vitro</em> produced bovine embryos are critical to the cattle industry. However, these embryos have altered morphology, epigenetics, and metabolism when compared to their <em>in vivo </em>counterparts. The aim of this thesis was to alter maturation and culture media to improve the …
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In vitro maturation and fertilization of porcine oocytes and evaluation of male fertility
The objectives of this thesis were to establish incubation systems for in vitro porcine maturation and for in vitro fertilization (IVF), and utilizing these in vitro matured oocytes and in vitro fertilization techniques to determine the difference of sperm fertility from different boars. In the …
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IN VITRO EMBRYO PRODUCTION IN WOOD BISON (Bison bison athabascae)
The studies presented in this thesis were designed to develop efficient protocols for collecting competent oocytes and to produce disease-free wood bison embryos by in vitro fertilization and culture. In Chapter 3, the in vivo and in vitro maturational characteristics of cumulus-oocyte complexes …
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In Vitro Maturation, Fertilization and Embryo Culture of Porcine Gametes in a Microfluidic Environment
These experiments were designed to examine the effects of in vitro fertilization within the microchannel environment and to compare the results to the traditional microdrop culture system. Additionally, the initial experiments of integrating the steps of the IVP process within a single microchannel …
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Systematic Co-Culture of IPSC-CM and IPSC-AN Promote Co-Maturation In Vitro
… is a complex system of multicellular interactions that enables proper heart function. In native heart muscle, sympathetic neurons (SN) and parasympathetic neurons (PSN) modulate the beat rate of cardiomyocytes (CM) to maintain homeostasis. Pluripotent stem cells can differentiate into …
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In Vitro Kavapyrone Production and Genomic Stability of in Vitro Kava Cultures
Inter simple sequence repeat (ISSR) markers were used for detection of polymorphism among in vitro kava cultures. An absence of normally observed bands was observed among organogenic callus cultures, while a small degree of ISSR polymorphism was detected among regenerated plantlets.
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Úloha SIRT1 během zrání oocytů v podmínkách in vitro
… many epigenetic and non-epigenetic targets. The involvement of SIRT1 in oocyte maturation is assumed and the importance of ooplasmic SIRT1 pool for further destiny of matured oocyte is strongly suggested. We hypothesized that SIRT1 play role of the signal molecule in mature oocyte through …
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Frakturverhalten verschiedener Wurzelstiftsysteme in vitro
In order to reach sufficient retention of restorations on endodontically treated teeth and in order to stabilize the remaining tooth structure various post systems can be inserted in the root canal. This study compares a titanium post system to a ceramic and a fibre-reinforced composite post system …
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Modelling Human Glomerulosclerosis in vitro
… and mesangial cells (MCs), and dysregulation in the interaction between these cell types results in glomerulosclerosis. This is characterised by excessive extracellular matrix deposition and cell dysfunction leading to disproportionate MC proliferation and POD loss. Animal models of …
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Effects of In Vitro Maturation and Fertilization of Cattle Ova on Rate of Twinning in Beef Cattle
… Texas State University, San Marcos, to examine the effects of using in vitro matured and fertilized embryos in embryo transfer to induce twinning and examine the influence of twinning on cow production and carcass characteristics between single and twin calves. Fifteen single parity cows …
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Chromatin accessibility informs cell identity: studies in silico, in vitro, and in vivo
Chromatin accessibility provides key regulation in defining cell identity as it exhibits control over the ability of transcription factors and transcriptional machinery to bind to regulatory elements and initiate changes to gene expression. In this thesis I elaborate on the intricate relationships …
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Applied Biotechnology for in Vitro Production of Carica Papaya L
A suitable in vitro system for the production of Carica papaya L. was developed. Shoot cultures of papaya were optimally established at low irradiance, 5 $\mu$mol m$\rm\sp{-2}s\sp{-1},$ with FeEDTA as the iron source. But during later proliferation, highest multiplication rates, highest leaf …
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In-vitro Clot Formation and Failure
A primary cause of bleeding and mortality after traumatic injury is failure of hemostatic clot formation at wound sites. After trauma, approximately 25-30% of severe injured patients display trauma induced coagulopathy (TIC) which is a multifactorial condition that causes poor clot formation and …
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In vitro inhibition of coronavirus replications
"In Vitro Inhibition of Coronavirus Replications A search for new anti-coronaviral drugs to treat coronaviral infections was motivated by an outbreak of severe acute respiratory syndrome (SARS). In order to find drugs that treat coronavirus infections, including SARS, we screened traditional …
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