Results 81 to 90 of about 114,615 (257)

Can Testicular Size Be a Predictive Factor for Successful Sperm Retrieval in Patients with Non Obstructive Azoospermia?

Gynecology Obstetrics & Reproductive Medicine, 2019
Objective: Non-obstructive azoospermia, defined as absence of spermatozoa in the ejaculate caused by impaired spermatogenesis, is the most severe cause of male infertility.
Omer yumusak, Mehmet Cinar, Serkan Kahyaoglu, Yasemin Tasci, Gul Nihal Buyuk, Aysegul Oksuzoglu   +5 more
doaj   +1 more source

Novas perspectivas no diagnóstico do hipogonadismo pediátrico masculino: a importância do AMH como marcador de células de Sertoli [PDF]

, 2011
Sertoli cells are the most active cell population in the testis during infancy and childhood. In these periods of life, hypogonadism can only be evidenced without stimulation tests, if Sertoli cell function is assessed.
Grinspon, Romina, Rey, Rodolfo Alberto
core   +2 more sources

Sex-change chemicals and their influence on the brain. [PDF]

, 2001
The potential for man-made chemicals to mimic or antagonise natural hormones is a controversial issue, but one for which increasing amounts of evidence are being gathered worldwide.
Harris, CA
core   +3 more sources

The 'incidentaloma' of the pituitary gland. Is neurosurgery required? [PDF]

, 1990
We describe a series of 18 patients with an intrasellar mass incidentally discovered by computed tomography or magnetic resonance imaging. The average size of the mass was 13 mm, with a range from 5 to 25 mm.
Allolio, Bruno, Menzel, Jürgen, Reincke, Martin, Saeger, Wolfgang, Winkelmann, Werner   +4 more
core   +1 more source

Discrepancies between Antimullerian Hormone and Follicle Stimulating Hormone in Assisted Reproduction

Obstetrics and Gynecology International, 2013
Data from 107 women undergoing their first IVF/ICSI were analyzed. Relationships between antimullerian hormone (AMH) and follicle stimulating hormone (FSH) were analyzed after dividing patients into four groups according to AMH/FSH levels.
Munawar Hussain, David Cahill, Valentine Akande, Uma Gordon   +3 more
doaj   +1 more source

Homeostatic relevance of vitamin D in maintaining male fertility in human: Down–regulation of oxidative stress and up-regulation of anti-oxidative defense and steroidal hormones

Asian Pacific Journal of Reproduction, 2018
Objective: To evaluate correlation between the levels of vitamin D and male infertility as well as to determine the efficacy of vitamin D in improving the male fertility by up-regulating the levels of testosterone and spermatogenesis.Methods: In the ...
Fahad Hussain, Arif Malik, Muhammad Saeed Qureshi, Muhammad Imran, Sulayman Waquar, Hassan Shafique, Zohaib Rana, Hnin Ei Thu, Zahid Hussain   +8 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]

, 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, Armstrong, Armstrong, Armstrong, Barrell, Belchetz, Bliss, Bliss, Burger, Bédécarrats, Cardenas, Caunt, Caunt, Caunt, Chuderland, Ciccone, Clayton, Crowley, Cullen, Durham, Ferris, Haisenleder, Haisenleder, Kanasaki, Lawson, Markevich, Marshall, Marshall, Millar, Moenter, Naor, O'Byrne, Padmanabhan, Purvis, Reiss, Savoy-Moore, Shupnik, Sisk, Tomida, Tsaneva-Atanasova, Tsutsumi, Williams   +41 more
core   +1 more source

Intracellular Follicle-Stimulating Hormone Receptor Trafficking and Signaling

Frontiers in Endocrinology, 2018
Models of G protein-coupled receptor (GPCR) signaling have dramatically altered over the past two decades. Indeed, GPCRs such as the follicle-stimulating hormone receptor (FSHR) have contributed to these new emerging models.
Niamh Sayers, Aylin C. Hanyaloglu
doaj   +1 more source

Progestogen-induced luteinizing and follicle-stimulating hormone surge in postmenopausal women: a simulated ovulatory peak. [PDF]

, 1968
William D. Odell, Ronald S. Swerdloff
openalex   +1 more source

Mapping the follicle-stimulating hormone-induced signalling networks

Frontiers in Endocrinology, 2011
Follicle-stimulating hormone (FSH) is a central regulator of male and female reproductive function. Over the last decade, there has been a growing perception of the complexity associated with FSH-induced cellular signalling.
Pauline eGloaguen, Pascale eCrépieux, Domitille eHeitzler, Anne ePoupon, Eric eReiter   +4 more
doaj   +1 more source