Results 31 to 40 of about 108,821 (255)

Efecto del reemplazo folicular (GnRH) y de somatotropina bovina (bST) sobre la fertilidad de vacas lecheras expuestas a estrés calórico

open access: yesRevista Mexicana de Ciencias Pecuarias, 2020
Tres protocolos reproductivos fueron evaluados: 1) PG: inyección de PGF2α en el día 50 posparto e inseminación (IA) en base a detección del estro. 2) OVS (Ovsynch: día 0, GnRH; día 7, PGF2α; día 9, GnRH; día 10, IA); y 3) ROV (GnRH + Ovsynch: día- 7 ...
Renato Raúl Lozano-Domínguez   +7 more
doaj   +1 more source

A comparison of gonadotropin-releasing hormone and human chorionic gonadotropin in dairy cows with ovarian follicular cysts

open access: yesVeterinary Evidence, 2022
PICO question In adult dairy cows with ovarian follicular cysts, does treatment with gonadotropin-releasing hormone (GnRH) compared to human chorionic gonadotropin (hCG) result in a more rapid return to cyclicity?
Kathryn Kesler   +2 more
doaj   +1 more source

Pulsatile Hormonal Signaling to Extracellular Signal-Regulated Kinase: Exploring System Sensitivity to Gonadotropin-Releasing Hormone Pulse Frequency and Width [PDF]

open access: yes, 2014
Gonadotropin-releasing hormone (GnRH) is secreted in brief pulses that stimulate synthesis and secretion of pituitary gonadotropin hormones and thereby mediate control of reproduction.
Armstrong   +41 more
core   +2 more sources

La castración inmunológica de los cerdos machos: estado actual

open access: yesRevista de Producción Animal, 2020
Antecedentes: La ceba de los cerdos enteros tiene las desventajas del olor sexual en la carne y los problemas de bienestar por el comportamiento agresivo y la monta.
Roberto Basulto Baker
doaj  

Gonadotropin Releasing Hormones and their Receptors in Avian Species

open access: yesThe Journal of Poultry Science, 2006
In all vertebrates, gonadotropin releasing hormone (GnRH) is a key component of the hypothalamo-pituitary-gonadal axis. In birds, two distinct forms of GnRH (cGnRH-I and cGnRH-II) have been characterized, and a third immunoreactive form similar to ...
Grégoy Y. Bédécarrats   +2 more
doaj   +1 more source

Competence, specification and commitment to an olfactory placode fate [PDF]

open access: yes, 2008
The nasal placode shares a common origin with other sensory placodes within a pre-placodal domain at the cranial neural plate border. However, little is known about early events in nasal placode development as it segregates from prospective lens, neural ...
Bhattacharyya, Sujata   +1 more
core   +2 more sources

Enhanced at puberty 1 (EAP1) is a new transcriptional regulator of the female neuroendocrine reproductive axis [PDF]

open access: yes, 2007
The initiation of mammalian puberty and the maintenance of female reproductive cycles are events controlled by hypothalamic neurons that secrete the decapeptide gonadotropin-releasing hormone (GnRH).
Sabine Heger   +56 more
core   +1 more source

Cu-GnRH – new gonadoliberin (GnRH) analog

open access: yesPostępy Higieny i Medycyny Doświadczalnej, 2013
Our research was concentrated about physiological and structural aspects of metal complexes with GnRH, which were synthetized by Professor Henryk Kozłowski from the Uniwersity of Wrocław. We found that copper, nickel, zinc and cobalt complexes with GnRH stimulated the release of LH and FSH both in vivo and in vitro.
openaire   +2 more sources

A Biomarker‐Driven Ovary–Endometrium Organ‐on‐a‐Chip Mimicking 3D Multicellular Complexity and Menstrual Cyclicity for Predicting Reproductive Toxicity

open access: yesAdvanced Science, EarlyView.
We present a dual‐organ, biomarker‐integrated ovaryendometrium organ‐on‐a‐chip that recapitulates 3D tissue complexity, menstrual cycle dynamics, and hormonal crosstalk. This platform enables real‐time, cell‐typespecific fluorescent readouts of reproductive toxicity using ANGPTL4 and SERPINB2 as early‐response reporters.
Soo‐Rim Kim   +6 more
wiley   +1 more source

The direct response of the gonads to cues of stress in a temperate songbird species is season-dependent. [PDF]

open access: yes, 2013
The gonadotropin releasing hormone (GnRH) system in the hypothalamus is often considered the final point in integration of environmental cues as they pertain to the reproductive axis.
Bentley, George   +2 more
core   +2 more sources

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