Results 41 to 50 of about 73,970 (344)

Pregnancy outcome of assisted reproductive technology cycle in patients with hypogonadotropic hypogonadism

Journal of Human Reproductive Sciences, 2015
CONTEXT: Ovulation induction in patients with hypogonadotropic hypogonadism (HH) is a challenge to the treating physician. The threshold for ovarian response in HH may differ substantially from that of normal patients.
Monna Pandurangi, M Tamizharasi, N Sanjeeva Reddy   +2 more
doaj   +1 more source

Pharmacological treatment for pubertal progression in boys with delayed or slow progression of puberty: A small-scale randomized study with testosterone enanthate and testosterone undecanoate treatment

Frontiers in Endocrinology, 2023
ContextThe use of testosterone enanthate (TE), 50–75 mg intramuscularly (i.m.)/month, for the treatment of boys with delayed puberty or slow progression to induce puberty is the standard of care (SoC) in Sweden.
Martin Österbrand, Martin Österbrand, Martin Österbrand, Hans Fors, Hans Fors, Ensio Norjavaara, Ensio Norjavaara   +6 more
doaj   +1 more source

Species-specific differences in follicular antral sizes result from diffusion-based limitations on the thickness of the granulosa cell layer

, 2013
The size of mature oocytes is similar across mammalian species, yet the size of ovarian follicles increases with species size, with some ovarian follicles reaching diameters more than 1000-fold the size of the enclosed oocyte.
Bächler, M., De Geyter, Ch., Iber, D., Menshykau, D.   +3 more
core   +1 more source

The Nuclear Localization of ACLY Guards Early Embryo Development Through Recruiting P300 and HAT1 to Promote Histone Acetylation and Transcription

Advanced Science, EarlyView.
ACLY is vital for early embryo development. IGF‐1 activates AKT to phosphorylate ACLY, driving its nuclear localization and recruitment of HATs (P300/HAT1), boosting acetyl‐CoA production and histone acetylation for transcriptional activation. Conversely, ACLY deficiency (via knockdown, knockout, or AKT inhibition) reduces nuclear acetyl‐CoA, disrupts ...
Yerong Ma, Yingyi Zhang, Weijie Yang, Xiaomei Tong, Siya Liu, Yan Zhou, Mengjia Qiu, Huifang Jiang, Zhanhong Hu, Peipei Ren, Yan Rong, Mengru Lai, Jiamin Jin, Fei Huang, Liujian Ouyang, Feng Zhou, Heng‐Yu Fan, Yin‐Li Zhang, Songying Zhang   +18 more
wiley   +1 more source

Seasonal variation in the reproductive activity of male goats raised under tropical climate conditions

Revista Brasileira de Zootecnia
This study analyzed seasonal variations in the testes, the concentration of sex hormones, the parameters of fresh and thawed semen, and the sexual behavior of male Alpine goats from a temperate region in a tropical climate and possible interference with ...
Júlio César Oliveira Dias, Cristina Mattos Veloso, Madriano Christilis da Rocha Santos, Carlos Thiago Silveira Alvim Mendes de Oliveira, Camila Oliveira Silveira, Erick Iglesias, Paula Piccolo Maitan, Letícia Maria Pereira Sanglard   +7 more
doaj   +1 more source

Role of Follicle-Stimulating Hormone in Spermatogenesis

Frontiers in Endocrinology, 2018
Spermatogenesis is a concerted sequence of events during maturation of spermatogonia into spermatozoa. The process involves differential gene-expression and cell-cell interplay regulated by the key endocrine stimuli, i.e., follicle-stimulating hormone ...
Olayiwola O. Oduwole, Hellevi Peltoketo, Ilpo T. Huhtaniemi, Ilpo T. Huhtaniemi   +3 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

Semaphorin 3E‐Plexin‐D1 Pathway Downstream of the Luteinizing Hormone Surge Regulates Ovulation, Granulosa Cell Luteinization, and Ovarian Angiogenesis in Mice

Advanced Science, EarlyView.
The Semaphorin 3E (Sema3E)‐Plexin‐D1 pathway mediated by C/EBPα and C/EBPβ downstream of the luteinizing hormone (LH) surge plays important roles in the mouse preovulatory ovary. Timely activation and suppression of this pathway during the preovulatory stage are crucial for ovulation, corpus luteum formation, and proper angiogenesis.
Hanxue Zhang, Jimmy Dhillon, Paul D. Soloway, Bo Shui, Seoyeon Lee, Jennifer K. Grenier, Paul R. Munn, M. Cecilia Ljungberg, Rebecca B Williams, Rainer B. Lanz, Yu‐Hsiang Liao, Yi A. Ren   +11 more
wiley   +1 more source

OVARIAN STIMULATION FOR IVF-ET PROCEDURE

Zdravniški Vestnik, 2002
Background. It is well known that the efficiency of fertilization in vitro depends on the number of transferred embryos. To provide the conditions for the development of a higher number of ovarian follicles, from which a higher number of oocytes can be ...
Robert Medved, Sara Korošec, Irena Virant, Helena Meden-Vrtovec   +3 more
doaj  

Significant Serum Progesterone Variations on the Day of Final Oocyte Maturation in Stimulated IVF Cycles

Frontiers in Endocrinology, 2019
Objective: To evaluate intraday serum progesterone levels on the day of final oocyte maturation in women undergoing ovarian stimulation in a GnRH-antagonist protocol.Study design, size, and duration: The study was done as a prospective observational ...
Upma Shanker, Barbara Lawrenz, Barbara Lawrenz, Leif Bungum, Leyla Depret Bixio, Francisco Ruiz, Carol Coughlan, Human M. Fatemi, Human M. Fatemi, Human M. Fatemi   +9 more
doaj   +1 more source