Results 31 to 40 of about 100,933 (268)
La castración inmunológica de los cerdos machos: estado actual
Revista 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
Revista 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
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Acta Veterinaria, 2022 The reproductive efficiency of the cows was monitored after two resynchronization protocols: Ovsynch (OVS) and Double Ovsynch (DOS). The research initially included 70 HF cows who entered the first synchronization protocol – Presynch.
Đorđević Milan +6 more
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Urbilaterian origin of paralogous GnRH and corazonin neuropeptide signalling pathways
Scientific Reports, 2016 Gonadotropin-releasing hormone (GnRH) is a key regulator of reproductive maturation in humans and other vertebrates. Homologs of GnRH and its cognate receptor have been identified in invertebrates–for example, the adipokinetic hormone (AKH) and corazonin
Shi Tian +6 more
semanticscholar +1 more source
The kisspeptin-GnRH pathway in human reproductive health and disease
Human Reproduction Update, 2014 BACKGROUND The discovery of kisspeptin as key central regulator of GnRH secretion has led to a new level of understanding of the neuroendocrine regulation of human reproduction.
K. Skorupskaite, J. George, R. Anderson
semanticscholar +1 more source
Strategies to Improve the Lipophilicity of Hydrophilic Macromolecular Drugs
Advanced Healthcare Materials, EarlyView.Hydrophilic macromolecular drugs can be successfully lipidized by covalent attachment of lipids, by hydrophobic ion pairing with negatively or positively charged surfactants, and by dry or wet reverse micelle formation. Lipophilicity enhancement of hydrophilic macromolecules has several benefits including stability and bioavailability improvement ...
Sera Lindner +8 more
wiley +1 more source
Gene Expression Associated with Comparative study between Lepidium sativum extract and hormonal treatment of ovarian inactivity in crossbreed cows. [PDF]
Basrah Journal of Veterinary ResearchThis research aimed to study the effect of Lepidium sativum (LS) seed extract and to compare between it and GnRH in treating inactive ovaries in cows by gene expression, the study was conducted on 27 lactating anestrus crossbreed cows, aged between 3 ...
Hayder AL-Mutar +2 more
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PLoS ONE, 2015 Infertility associated with obesity is characterized by abnormal hormone release from reproductive tissues in the hypothalamus, pituitary, and ovary. These tissues maintain insulin sensitivity upon peripheral insulin resistance.
S. DiVall +6 more
semanticscholar +1 more source
Advanced Science, EarlyView.Psychological stress activates the sympathetic–adrenal axis, elevating norepinephrine (NE) and suppressing reproductive hormones, thereby impairing male reproduction. Excess NE overactivates and desensitizes β‐adrenergic receptors (β‐ARs), triggering Sertoli cell ferroptosis and disrupting spermatogenesis.
Lingyu Zhang +12 more
wiley +1 more source
Biology, 2019 The regulation of reproductive function by glucocorticoids occurs at all levels of the hypothalamo-pituitary-gonadal axis. Within the pituitary, glucocorticoids have been shown to directly alter gene expression in gonadotrophs, indicating that these cell
Anthony E. Michael +2 more
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