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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Produção de embriões in vitro com adição de hormônio de crescimento bovino (bGH) ao meio de maturação

Barbosa, Larissa Alves Berté 19 March 2015 (has links)
Submitted by Jordan (jordanbiblio@gmail.com) on 2017-03-02T14:03:04Z No. of bitstreams: 1 DISS_2015_Larissa Alves Berté Barbosa.pdf: 410769 bytes, checksum: 903677a2ce06bd213b48a06034419b79 (MD5) / Approved for entry into archive by Jordan (jordanbiblio@gmail.com) on 2017-03-03T12:03:08Z (GMT) No. of bitstreams: 1 DISS_2015_Larissa Alves Berté Barbosa.pdf: 410769 bytes, checksum: 903677a2ce06bd213b48a06034419b79 (MD5) / Made available in DSpace on 2017-03-03T12:03:08Z (GMT). No. of bitstreams: 1 DISS_2015_Larissa Alves Berté Barbosa.pdf: 410769 bytes, checksum: 903677a2ce06bd213b48a06034419b79 (MD5) Previous issue date: 2015-03-19 / O hormônio de crescimento (GH) é um hormônio secretado pela hipófise e atua no crescimento de vários tecidos, incluindo a sistema reprodutor. Ele não é um hormônio reprodutivo, porém tem uma ligação importante para o desenvolvimento dos folículos ovarianos e no amadurecimento oocitário. Seus receptores estão presentes nas células do cumulus na membrana citoplasmática e nuclear do oócito, e isso faz com que o GH atue diretamente em seu crescimento. Na produção in vitro de embriões o GH vem sendo estudado visando aumentar a quantidade e a qualidade dos embriões, porém a concentração de GH na maturação in vitro ainda não está definida, havendo uma variação na literatura de 10 a 1000 ng/mL. Com isso, esse estudo comparou diferentes dosagens de GH adicionados ao meio de maturação, a fim de definir uma dosagem ideal para que haja um aumento na quantidade e qualidade dos embriões produzidos, que foi mensurada através das taxas de clivagem, produção de embriões e quantificação do número de células embrionárias, como também se comparou a interação do GH com a geração de estresse oxidativo. Os oócitos foram maturados com meio composto por TCM 199 com sais de Earl, suplementado com 10% de soro fetal bovino, hormônio luteinizante, hormônio folículo estimulante, estradiol e amicacina. Diferentes dosagens de GH foram adicionadas ao meio de maturação sendo elas 0 ng/mL, 25 ng/mL, 50 ng/mL, 75 ng/mL e 100 ng/mL. Após 24 horas de maturação os oócitos foram fertilizados e estes foram incubados por 22 horas, para posteriormente passarem para o cultivo, onde ficaram incubadas por 7 dias. No terceiro dia de cultivo foram avaliadas as clivagens e no sétimo dia a produção de embriões. Os embriões em estagio de blastocisto expandido foram fixados em lâmina e corados com Panótico para a contagem de células embrionárias. A análise de estresse oxidativo foi feito pela reação dos meios de maturação, fertilização e cultivo com o acido tiobarbitúrico. Houve diferenças significativas sobre a quantificação de células quando usado 100 ng/ml proporcionando uma melhora na qualidade dos embriões, e também se aumentou o estresse oxidativo quando usado 75 e 100 ng/mL na fertilização e no cultivo in vitro. / Growth hormone (GH) is a hormone secreted by the pituitary gland and acts on the growth of various tissues, including the reproductive system. It is not a reproductive hormone, but has an important link to the development of ovarian follicles and the oocyte maturation. Its receptors are present in cumulus cells in cytoplasmic and nuclear membrane of the oocyte, and this causes the GH acts directly in its growth. In vitro production of embryos GH has been studied to increase the amount and quality of embryos, but the concentration of GH in vitro maturation is not yet defined, with a variation in the literature 10 to 1000 ng/mL. This study compared different dosages of GH added to the maturation medium in order to set an optimal dosage so that there is an increase in the quantity and quality of embryos produced, which was measured by the cleavage rates, embryo production and quantifying the number of embryonic stem cells, as well as comparing the interaction of GH with the generation of oxidative stress. Oocytes were matured in medium composed of TCM 199 with Earl's salts, supplemented with 10% fetal bovine serum, luteinizing hormone, follicle stimulating hormone, estradiol, and amikacin. Different dosages of GH were added to maturation medium these being 0 ng/mL 25 ng /mL, 50 ng/mL, 75 ng/mL and 100 ng/mL. After 24 hours of maturation, oocytes were fertilized and these were incubated for 22 hours to later pass to the culture and they were incubated for 7 days. On the third day of cultivation were evaluated cleavages and on the seventh day the production of embryos. Embryos expanded blastocyst stage were fixed on slides and stained with Panotic for embryonic cell count. The oxidative stress analysis was done by the reaction of the means of maturation, fertilization and cultivation with thiobarbituric acid. There were significant differences in quantitation of cells when used 100 ng/mL giving an improvement in the quality of embryos, and also increased the oxidative stress used when 75 and 100 ng/mL in fertilization and in vitro culture.
2

Investigation of adiponectin and its receptors in mouse-models of altered growth hormone action: Attempts to understand the link between adipose tissue and longevity

Lubbers, Ellen MR 20 June 2012 (has links)
No description available.
3

Growth Hormone (GH) and the Glomerular Podocyte

Brittain, Alison Louise 04 June 2019 (has links)
No description available.
4

Using RNA-seq Technology to Explore the Impact of Growth Hormone on Angiogenesis and Other Cellular Pathways in Subcutaneous and Epididymal Adipose Tissue from Wild Type and Bovine Growth Hormone Transgenic Mice

Duran Ortiz, Silvana 23 September 2014 (has links)
No description available.
5

Computer-aided modeling and simulation of molecular systems and protein (WT-bGH) structure minimization

Huang, Zheng January 1995 (has links)
No description available.
6

Der Rücktritt gem. § 24 StGB auf der „Tatbestandsebene“ des Versuchs

Schumann, Antje 29 May 2024 (has links)
Das Strafgesetzbuch stellt nicht erst die vollendete Tat unter Strafe, sondern bei Verbrechen und bestimmten Vergehen schon die versuchte Tat (siehe §§ 22, 23 StGB). Die Versuchsvorschrift in § 22 StGB kann daher als Strafausdehnungsnorm verstanden werden . Zugleich hält das Gesetz mit der Rücktrittsbestimmung in § 24 StGB eine Regelung bereit, die zur Straflosigkeit der versuchten Tat führt. Warum der Rücktritt diese Wirkung auf den Versuch hat (Strafbefreiungsgrund), ist seit langem ebenso heftig umstritten wie die Frage nach der dogmatischen Einordnung des Rücktritts im Straftatsystem
7

The Effects of Growth Hormone Action on the Mouse Intestine

Young, Jonathan A. January 2018 (has links)
No description available.
8

Characterization of Immune Cell Populations in White Adipose Tissue of Wild Type and Bovine Growth Hormone Transgenic Mice

Harshman, Stephanie G. January 2012 (has links)
No description available.
9

Exploring Fibrosis in Bovine Growth Hormone (bGH) Transgenic Mice

Kington, Zoe 16 May 2023 (has links)
No description available.
10

Growth Hormone (GH) and the Cardiovascular System: Studies in Bovine GH Transgenic and Inducible, Cardiac-Specific GH Receptor Gene Disrupted Mice

Jara, Adam 10 June 2014 (has links)
No description available.

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