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.
Results
Showing 1 to 20 of 25 for “"human chorionic gonadotropin (hCG)"”.
-
Effects of Estradiol on Leydig Cell Function and Testicular Development in the Prepubertal Bull
… and 31 weeks with an intramuscular injection of human chorionic gonadotropin (hCG). Serum hormone levels were determined weekly. At 39 weeks of age, E and P calves were castrated for histologic evaluation of the testes and assessment of in vitro Leydig cell function. Serum E$\sb2$ was greater …
-
Biological effects of synthetic biomolecules that may either mimic or antagonise the function of hCG in the development of cancer and autoimmune disease
Human chorionic gonadotropin (hCG) is a hormone critical for successful pregnancy, partly by promoting maternal immune tolerance to fetal antigens. It achieves this by expanding immunoregulatory cells such as tolerogenic dendritic cells, regulatory T cells (Tregs), and regulatory B cells (Bregs). …
-
Dietary Influence on Reproductive Development in Female Largemouth Bass, Micropterus Salmoides
… T and E2 can exert negative feedback effects on gonadotropin secretion from the pituitary. Because diet did influence gonadal growth, ovarian tissue from bass raised on both diets was incubated in vitro in the presence of human chorionic gonadotropin (hCG) to determine if there were differences …
-
Electrochemical immunosensor based on cyclodextrin supramolecular interactions for the detection of human chorionic gonadotropin
… electrochemical strategies for the detection of human chorionic gonadotropin(hCG) is presented. This involves the modification of a gold surface with a thiolated β-cyclodextrin epichlorohydrin polymer (βCDPSH) to form a supramolecular inclusion complex with ferrocene (Fc)-functionalised …
-
Electrochemical Immunosensor based on Cyclodextrin Supramolecular interactions for the detection of human chorionic gonadotropin
… electrochemical strategies for the detection of human chorionic gonadotropin(hCG) is presented. This involves the modification of a gold surface with a thiolated β-cyclodextrin epichlorohydrin polymer (βCDPSH) to form a supramolecular inclusion complex with ferrocene (Fc)-functionalised …
-
Electrochemical immunosensor based on cyclodextrin supramolecular interactions for the detection of human chorionic gonadotropin
… electrochemical strategies for the detection of human chorionic gonadotropin (hCG) is presented. This involves the modification of a gold surface with a thiolated β- cyclodextrin epichlorohydrin polymer (βCDPSH) to form a supramolecular inclusion complex with ferrocene (Fc)-functionalised …
-
In vitro progesterone and estrone synthesis by the porcine placenta and endometrium at 30, 60 and 90 days of gestation
… of the effects of pregnenolone (P₅), human chorionic gonadotropin (hCG) and 3' 5', cyclic adenosine monophosphate ( cAMP) on porcine placental and endometrial production of progesterone (P₄), testosterone (T) and estrone (E₁) at 30, 60 and 90 days of gestation. Duplicate 300 mg samples …
-
Recruitment of monocytes to the pre-ovulatory ovary
… Ovaries were collected at several times post human chorionic gonadotropin (hCG) injection and analyzed by multi-color flow cytometry. Oviducts were collected from mice 20 hours after hCG administration and cumulous oocyte complexes were collected, counted and averaged to determine ovulation …
-
Evaluating luteinizing hormone receptor signaling using the cyclic AMP reporter ICUE3
… conditions including exposure of cells to human chorionic gonadotropin (hCG). In some experiments, CHO cells co-expressing ICUE3 and constitutively-active LH receptors, LH receptors yoked to a single-chain modified form of hCG (yLHR), were used to determine whether the presence of a …
-
Hormonal mechanisms for variation in female mate choice
… hormone concentration was manipulated using human chorionic gonadotropin (HCG) and such manipulation induces flexible mate choice. Finally, I investigate whether hormones modulate a central auditory nucleus involved in phonotaxis behavior. Immediate early gene (IEG) induction, specifically …
-
Superfetation in beef cattle
… by induction of ovulation in mated cattle with human chorionic gonadotropin (hCG) followed by AI was unsuccessful. Ovulation was induced in pregnant cows on day 7 but could not be induced >23 days of pregnancy. Subsequently, it was shown that uterine stage bovine embryos (7-day) could develop …
-
Comparison of two different media and assisted hatching techniques on the embryo hatching rate using the mouse as a model
… female mice were super-ovulated using equine chorionic gonadotropin (eCG) and human chorionic gonadotropin (hCG). A total of 400 blastocysts were collected from the F1 generation and these were allocated equally for the four assisted hatching techniques (laser, mechanical, chemical and …
-
Mechanisms controlling in vitro progesterone synthesis by the ovine placenta
… and the tissue was subject to addition of either human Chorionic Gonadotropin (hCG), 3’, 5', cyclic adenosine monophosphate (cAMP), luteinizing hormone-releasing hormone (LHRH) or no additional treatment. Progesterone concentration in the medium after incubation were determined by …
-
Analysis and characterisation of human chorionic gonadotropin glycoforms in pregnancy and trophoblastic disorders
Human chorionic gonadotropin (hCG) is a heterogeneous glycoprotein hormone with a varying degree of carbohydrate moieties. Its glycosylation arrangements are increasingly recognized as a common and important element of disease pathophysiology and are associated with many disorders including …
-
Effects of ovulation-inducing drugs on pregnancy rates of cattle in rural areas after synchronized oestrus and artificial insemination
… prostaglandin F20 (dinoprost PGF20) and human chorionic gonadotropin (hCG) were used to increase the ovulation rate, therefore pregnancy rates, when injected intramuscularly at the time-of artificial insemination (Al). Frozen-thawed Bonsmara and Nguni semen was used in synchronized cows …
-
Activation of Novel Secretoneurin Circuits in Ovulating Zebrafish
… reproduction. Hypothalamic neurons release the gonadotropin-releasing hormone (Gnrh) which stimulates the synthesis and release of the gonadotropins hormone (Lh) and follicle stimulating hormone (Fsh) in the anterior pituitary. Gonadotropins trigger and regulate essential reproductive events …
-
Lanthanides and quantum dots : time-resolved laser spectroscopy of biochemical Förster Resonance Energy Transfer (FRET) systems
… two kinds of imunnoassays are investigated using human chorionic gonadotropin (HCG) as analyte. HCG itself, as well as two monoclonal anti-HCG mouse-IgG (immunoglobulin G) antibodies are labeled with the Tb complex and QD, respectively. Although no sufficient evidence for FRET can be found for a …
-
Controlled cultivation techniques for the recovery of threatened fishes in Virginia
… were induced to spawn by hormonal injection with human chorionic gonadotropin (hCG) and carp pituitary extract (CPE) at mean dosages of 1688 I.U./kg and 20 mg/kg, respectively, or with luteinizing hormone releasing hormone analogue (LHRHa) and domperidone at mean dosages of 363 µg/kg and 36 mg/kg, …
-
PGE2 Receptor Subsets Mediate HCG Regulation of the Plasminogen Activator/Plasmin System in Primate Periovulatory Follicles
… hypothesized that regulation of proteolysis by gonadotropins is PGE2 mediated.</p> <p>There are four PGE2 receptors: EP1, EP2, EP3 and EP4. To determine which PGE2 receptors are present in monkey periovulatory follicles, granulosa cells and whole ovaries were collected 0, 12, 24, and 36 hours …
-
Microfabricated Surfaces and Particles for Advanced Immunoassay Platforms and High-Efficiency Electrowetting Heat Transfer System
… obtained preliminary results in the detection of Human Chorionic Gonadotropin (hCG) on passivated acrylic surface, activated through the exposure to a helium atom beam, which is subsequently functionalized with anti-hCG antibodies. The positive sample microcubes that have been functionalized with …
Page 1 of 2