Results 61 to 70 of about 217,151 (357)

Emerging Perspectives on Gonadotropin Regulation in Vertebrates Revealed by the Discovery of FSH‐RH in Teleosts

BioEssays, EarlyView.
Regarding pituitary gonadotropin regulation, recent studies have shown that in mammals, FSH and LH are regulated by a single GnRH (solo GnRH model), whereas in teleosts, they are regulated by CCK (FSH‐RH) and GnRH (LH‐RH), respectively (dual GnRH model).
Daichi Kayo, Shun Kenny Uehara, Muhammad Rahmad Royan, Shinji Kanda   +3 more
wiley   +1 more source

Interspecific comparisons of anuran embryonic epidermal landscapes and energetic trade‐offs in response to changes in salinity

Developmental Dynamics, EarlyView.
Abstract Background Freshwater salinization is an emerging stressor in amphibian populations, and embryonic stages are most vulnerable. To better understand the variation in embryonic osmoregulation, we challenged embryos of two phylogenetically diverse anuran species, Xenopus laevis and Lithobates (Rana) sylvaticus, along a gradient of non‐lethal ...
Kourtnie Whitfield, Erica J. Crespi
wiley   +1 more source

Effects of different gonadotropin preparations in GnRH antagonist protocol for patients with polycystic ovary syndrome during IVF/ICSI: a retrospective cohort study

Frontiers in Endocrinology
PurposeTo compare the effects of recombinant FSH alfa (rFSH-alfa), rFSH-beta, highly purified human menopausal gonadotropin (HP-hMG) and urinary FSH (uFSH) in women with polycystic ovarian syndrome who have undertaken the GnRH antagonist protocol during ...
Zhengyan Hu, Zhengyan Hu, Zhengyan Hu, Rujun Zeng, Rujun Zeng, Rui Gao, Rui Gao, Mingli Chen, Mingli Chen, Xiumei Liu, Xiumei Liu, Qiong Zhang, Qiong Zhang, Lang Qin, Lang Qin, Xun Zeng, Xun Zeng   +16 more
doaj   +1 more source

Heart failure with preserved ejection fraction in cancer patients and survivors. A scientific statement of the Heart Failure Association of the ESC and the ESC Council of Cardio‐Oncology

European Journal of Heart Failure, EarlyView.
Specific characteristics of HFpEF universal definition in cancer patients. Abstract Heart failure with preserved ejection fraction (HFpEF) is increasingly recognized in cancer patients and survivors, yet it remains underdiagnosed and its epidemiology largely unknown.
Kalliopi Keramida, Teresa Lopez‐Fernandez, Markus S. Anker, Mark C. Petrie, Pietro Ameri, Lisa J. Anderson, Jutta Bergler‐Klein, Anita Deswal, Dimitrios Farmakis, Borja Ibañez, Carolyn S.P. Lam, Ninian N. Lang, Alexander R. Lyon, Mariana Mirabel, Brenda Moura, Walter J. Paulus, Amina Rakisheva, Gianluigi Savarese, Michele Senni, Carlo Gabriele Tocchetti, Marco Metra, Gerasimos Filippatos   +21 more
wiley   +1 more source

Clomiphene citrate versus letrozole with gonadotropins in intrauterine insemination cycles: A prospective randomized trial

International Journal of Reproductive BioMedicine, 2017
Background: Clomiphene citrate is one of the effective drugs for infertilitytreatment due to oligo-ovulation or anovulation. Intrauterine insemination (IUI) isone of more adherent methods for treatment of infertile cases which is followed bycontrolled ...
Leila Pourali, Sedigheh Ayati, Shirin Tavakolizadeh, Hourieh Soleimani, Fatemeh Teimouri Sani   +4 more
doaj  

Tamoxifen is better than low-dose clomiphene or gonadotropins in women with thin endometrium (<7 mm) after clomiphene in intrauterine insemination cycles: A prospective study

Journal of Human Reproductive Sciences, 2018
Aim: Gonadotropin stimulation is used as the second line of treatment in patients with thin endometrium following clomiphene citrate (CC) administration, which is associated with higher cost, multiple births, and ovarian hyperstimulation syndrome ...
Sunita Sharma, Geetha Rani, Gunja Bose, Indranil Saha, Sikha Bathwal, B N Chakravarty   +5 more
doaj   +1 more source

Kisspeptin Exhibits Stimulatory Effects on Expression of the Genes for Kisspeptin Receptor, GnRH1 and GTH Subunits in a Gonadal Stage-Dependent Manner in the Grass Puffer, a Semilunar-Synchronized Spawner

Frontiers in Endocrinology, 2022
Kisspeptin has an important role in the regulation of reproduction by directly stimulating the secretion of gonadotropin-releasing hormone (GnRH) in mammals.
Md. Mahiuddin Zahangir, Md. Shahjahan, Hironori Ando   +2 more
doaj   +1 more source

Review: regulatory mechanisms of gonadotropin-inhibitory hormone (GnIH) synthesis and release in photoperiodic animals

Frontiers in Neuroscience, 2013
Gonadotropin-inhibitory hormone (GnIH) is a novel hypothalamic neuropeptide that was discovered in quail as an inhibitory factor for gonadotropin release. GnIH inhibits gonadotropin synthesis and release in birds through actions on gonadotropin-releasing
K. Tsutsui, T. Ubuka, G. Bentley, L. Kriegsfeld   +3 more
semanticscholar   +1 more source

Gonadotropin Gene Modulation by Steroids and Gonadotropin-Releasing Hormone1 [PDF]

Biology of Reproduction, 1996
Physiological gonadotropin levels are modulated by complex interrelationships between the sex steroids and the hypothalamic GnRH pulse generator, and the steroids and GnRH individually regulate gonadotropin subunit (alpha, LH beta, FSH beta) gene expression.
openaire   +3 more sources

The mitochondrial DNA copy number and ovary‐related reproductive disorders: A bidirectional two‐sample Mendelian randomization study

International Journal of Gynecology &Obstetrics, Volume 169, Issue 1, Page 112-120, April 2025.
Abstract Objective In the present study, a bidirectional two‐sample Mendelian randomization approach was utilized to explore potential causal relationships between mitochondrial DNA copy number (mtDNA‐CN) and ovary‐related reproductive disorders (ORRDs), including ovarian dysfunction, ovarian cyst, polycystic ovary syndrome (PCOS), premature ovarian ...
Ke Peng, Xiao Han, Congquan Wu, Qiaowen Lu, Shujun Gao   +4 more
wiley   +1 more source