Results 11 to 20 of about 51,797 (303)

Gonadotrophic Hormones and Testicular Descent [PDF]

Archives of Andrology, 1978
The effect of fetal decapitation on gubernacular development and testicular descent was studied in the pig. Gubernacular development was unaffected and testicular descent occurred normally in decapitated fetuses. Neither testicular descent nor gubernacular development could be induced by HCG or LH-RH, administered to naturally unilateral cryptorchid ...
B, Colenbrander, H W, van Straaten, C J, Wensing   +2 more
openaire   +2 more sources

Luteinizing hormone in testicular descent [PDF]

Molecular and Cellular Endocrinology, 2007
A proper hypothalamus-pituitary-testis axis with normal androgen synthesis and action is a prerequisite for normal testicular descent. Various defects in this axis may result in cryptorchidism but endocrine abnormalities are rarely detected. Androgens regulate testicular descent but androgen action alone is not sufficient for normal testicular descent.
Toppari, Jorma, Kaleva, Marko, Virtanen, Helena E., Main, Katharina M., Skakkebæk, Niels E.   +4 more
openaire   +3 more sources

Deep phenotyping of pubertal development in Norwegian children: the Bergen Growth Study 2

Annals of Human Biology, 2023
Background The Bergen Growth Study 2 (BGS2) aims to characterise somatic and endocrine changes in healthy Norwegian children using a novel methodology.
Petur B. Juliusson, Ingvild S. Bruserud, Ninnie Helen Bakken Oehme, Andre Madsen, Ingvild H. Forthun, Melissa Balthasar, Karen Rosendahl, Kristin Viste, Astanand Jugessur, Lawrence M. Schell, Robert Bjerknes, Mathieu Roelants   +11 more
doaj   +1 more source

Exposure to polychlorinated biphenyls and hexachlorobenzene, semen quality and testicular cancer risk [PDF]

, 2015
PURPOSE: We carried out a case-control study to investigate the possible role of occupational and environmental exposure to endocrine disruptors in the onset of testicular cancer (TC). METHODS: We evaluated 125 TC patients and 103 controls.
CATTARUZZA, Maria Sofia, F. Giannandrea, GANDINI, Loredana, LENZI, Andrea, LOMBARDO, Francesco, M. Gallo, PAOLI, Donatella, R. Turci   +7 more
core   +1 more source

Male reproductive hormones and semen quality

Asian Pacific Journal of Reproduction, 2019
Male reproductive functions are mediated by different hormones whose orchestrations remain a major research interest. The ‘master’ regulator hormonal axis is the hypothalamo- pituitary-gonadal/testicular axis which is led by the pulsatile release of ...
Sulagna Dutta, Pallav Sengupta, Suriyani Muhamad   +2 more
doaj   +1 more source

Peripheral and central mechanisms involved in hormonal control of male and female reproduction [PDF]

, 2016
Reproduction involves the integration of hormonal signals acting across multiple systems togenerate a synchronized physiological output. A critical component of reproduction is the luteinizinghormone (LH) surge, which is mediated by estradiol (E2) and ...
Bentley, G. E., Calandra, Ricardo Saul, Micevych, P. E., Paredes, A. H., Rudolph, L. M., Tesone, Marta, Wu, T. J.   +6 more
core   +1 more source

Diet formulated with black seed flour activates regulatory androgenic enzymes and neuroendocrine hormones in leachate-exposed reproductive damage of rat testes

Journal of Nutrition & Intermediary Metabolism, 2019
Mixed environmental toxicants particularly mixed-metals had been implicated as testicular endocrine disruptors. Functional foods were applied in traditional medicine since decades for the treatment of several reproductive defects with limited scientific ...
J.K. Akintunde, A.E. Irondi, E.O. Ajani, T.V. Olayemi   +3 more
doaj   +1 more source

Differential Effects of Neonatal Testosterone Treatment on Aggression in Two Selection Lines of Mice [PDF]

, 1992
Selection lines of mice, artificially selected for aggression based upon the attack latency score (ALS), were used. In order to determine the relative contribution of neonatal testosterone (T) in the development of aggression, we vary the plasma-T level ...
Bohus, Béla,, Compaan, Josje C.,, Koolhaas, Jaap M.,, Oortmerssen, Geert A. van,, Ruiter, Anne J.H. de,   +4 more
core   +2 more sources

Evaluation of Seminal Fluid Parameters, Reproductive Hormones and Testicular Biopsy for non-obstructive Azoospermic Patients with Sertoli cell only Syndrome

Sultan Qaboos University Journal for Science, 2006
The aims of this study were (i) to determine the seminal fluid parameters, levels of serum reproductive hormones, testicular size and diameter of seminiferous tubules depending on multiple testicular biopsies from non-obstructive azoospermic (NOA ...
Naso S. Qhraman, Muhammad-Baqir M-R. Fakhrildin, Dhaher H. Bra   +2 more
doaj   +1 more source

Role of androgen and gonadotrophins in the development and function of the Sertoli cells and Leydig cells: data from mutant and genetically modified mice [PDF]

, 2009
Development and maintenance of the male phenotype and establishment of fertility are all dependent upon the activity of the Sertoli cells and Leydig cells of the testis.
Abel, M.H., Baker, P.J., Huhtaniemi, I., Morris, I.D., O'Shaughnessy, P.J.   +4 more
core   +1 more source