Results 51 to 60 of about 334,002 (313)

Differences in in vitro responses of the hypothalamo–pituitary–gonadal hormonal axis between low- and high-egg-producing turkey hens

Poultry Science, 2020
Low-egg-producing hens (LEPH) ovulate less frequently than high-egg-producing hens (HEPH) and exhibit differences in mRNA levels for components of the hypothalamo–pituitary–gonadal (HPG) axis, suggesting differential responsiveness to trophic stimulation.
Kristen Brady, Julie A. Long, Hsiao-Ching Liu, Tom E. Porter   +3 more
doaj   +1 more source

The evolution and variety of RFamide-type neuropeptides: insights from deuterostomian invertebrates [PDF]

, 2014
Five families of neuropeptides that have a C-terminal RFamide motif have been identified in vertebrates: (1) gonadotropin-inhibitory hormone (GnIH), (2) neuropeptide FF (NPFF), (3) pyroglutamylated RFamide peptide (QRFP), (4) prolactin-releasing peptide (
Elphick, MR, Mirabeau, O
core   +1 more source

Equine models in translational medicine: A comparative approach to human health

Animal Models and Experimental Medicine, EarlyView.
This diagram summarizes and contrasts rodent and equine models, outlining their strengths, limitations, and applications. Horses offer naturally occurring diseases, genetic and physiological similarities to humans, and suitability for longitudinal and clinical‐scale studies.
Shayan Boozarjomehri Amnieh, Katarzyna Ropka‐Molik   +1 more
wiley   +1 more source

46 XX male syndrome with hypogonadotropic hypogonadism: A case report

İstanbul Kuzey Klinikleri, 2019
We report a 46 XX male syndrome diagnosed after failure of gonadotropin therapy taken for hypogonadotropic hypogonadism due to a pituitary macroadenoma.
Mehmet M Yalçın, Çiğdem Özkan, Müjde Aktürk, Ferda Perçin, Alev Eroğlu Altınova, Ayhan Karakoç, Göksun Ayvaz, Nuri Çakır   +7 more
doaj   +1 more source

Contribution of recent transgenic models and transcriptional profiling studies to our understanding of the mechanisms by which androgens control spermatogenesis [PDF]

, 2008
Publisher ...
Claessens, Frank, De Gendt, Karel, Denolet, Evi, Saunders, Philippa T K, Sharpe, Richard, Swinnen, Johannes V, Verhoeven, Guido, Willems, Ariane   +7 more
core   +1 more source

Follicle Stimulating Hormone in Cattle Breeding: Fundamentals, Innovations, and Scope

Animal Research and One Health, EarlyView.
FSH is crucial in cattle reproduction, with exogenous administration enhancing breeding and embryo production. Recombinant FSH offers advantages over pituitary‐extracted variants, including fewer injections, reduced stress, and safer production. These innovations improve breeding efficiency, optimize reproductive outcomes, and contribute to sustainable
Muhammad Shahzad, Hubdar Ali Kolachi, Jesse Oluwaseun Ayantoye, Xiaomeng Zhang, Muhammad Usman Mehmood, Rajilan Hilali Shanga, Pengcheng Wan, Xueming Zhao   +7 more
wiley   +1 more source

Influence of neurokinin B, dynorphin A and kisspeptin-10 on in vitro gonadotropin secretion by anterior pituitary cells isolated from pubescent ewes

Journal of Veterinary Research
The hypothalamic neuropeptides kisspeptin-10 (KiSS-10), neurokinin B (NKB), and dynorphin A (Dyn A) play roles in the endocrine regulation of the hypothalamic–pituitary–ovarian (HPO) axis in puberty.
Szysiak Natalia, Kosior-Korzecka Urszula, Longo Vincenzo, Patkowski Krzysztof, Greguła-Kania Monika, Nowakiewicz Aneta, Bochniarz Mariola, Junkuszew Andrzej   +7 more
doaj   +1 more source

Dried blood spot analysis in antidoping: Technical challenges, analytical advances, and future perspectives

Bulletin of the Korean Chemical Society, EarlyView.
Dried blood spot (DBS) analysis enables minimally invasive blood collection with strong analyte stability and simplified logistics, supporting anti‐doping applications beyond traditional matrices. Recent advances address hematocrit, volume variability, and matrix effects while expanding coverage to steroid esters, World Anti‐Doping Agency‐listed ...
Jihyun Yoon, Jiyeong Hong, Hanbin Oh, Chi Hwan Lee, Ki Hun Kim   +4 more
wiley   +1 more source

Effect of some neurotransmitters on pituitary in bull-camel

Journal of Veterinary Medical Research, 2013
Effect of some neurotransmitters on pituitary in bull-camelThe present in vitro study is an attempt for profound exploration of the influence of some inhibitory (GABA and taurine) and excitatory neurotransmitters (glutamic acid and L-Argnine) on ...
S.S. Ibrahim, A. Aboul-Ela, E.A Mabrouk, T. El-Metenawy, Faten Abo-Aziza   +4 more
doaj  

Effects of Pituitary Stalk-transection and Type of Barrier on Pituitary and Luteal Function During the Estrous Cycle of the Ewe [PDF]

, 1986
Effects of pituitary stalk-transection on plasma concentrations of luteinizing hormone (LH), follicle stimulating hormone (FSH) prolactin (PRL) and progesterone were investigated during the estrous cycle of ewes.
Dailey, R. A., Gust, C. M., Mallory, David S.   +2 more
core   +3 more sources