Results 71 to 80 of about 504,977 (225)

Predicting successful sperm retrieval in transfeminine adolescents after testicular biopsy

, 2021
PURPOSE: Increasing numbers of transgender adolescents are receiving gender-affirming treatments (GAT). Given GAT can impair reproductive function, clinical guidelines advise prior counselling regarding fertility preservation (FP). For transgender adults
O’Connell, MA, Peri, Angus, Peri, A, O’Connell, Michele A., Pang, Ken C., Gook, Debra, Jayasinghe, Yasmin, Bourne, H, Jayasinghe, Y, Ahler, A, Pang, KC, Bourne, Harold, Nightingale, M, Nightingale, Michael, Telfer, Michelle, Gook, D, Ahler, Astrid, Telfer, M, Yasmin Jayasinghe, Angus Peri, Debra Gook, Michael Nightingale, Ken C. Pang, Michelle Telfer, Harold Bourne, Astrid Ahler, Michele A. O’Connell   +26 more
core   +1 more source

Hormonal control and signaling of the testis of the bat Molossus molossus during the processes of testicular maturation, regression, and recrudescence

The Anatomical Record, EarlyView.
Abstract Molossus molossus, a species of neotropical bat belonging to the Molossidae family, has an annual reproductive cycle that includes two peaks of spermatogenic activity, one in April and another in September, and a period of total testicular regression in December.
Emília M. Soares, Juliana F. Ferraz, Cornélio S. Santiago, Larissa P. R. Venâncio, Arlindo G. Macedo‐Junior, Sebastião R. Taboga, Mateus R. Beguelini   +6 more
wiley   +1 more source

Is varicocele a prognostic factor for determining sperm retrieval rate before testicular sperm extraction?

, 2005
66 nonobstructive azoospermic men with normal genetic analysis composed of 32 (48%) patients with and 34 (52%) patients without varicocele were evaluated for the rate of sperm extraction five months after the varicocelectomy.
Bozkirli, I, Alkibay, T, Tan, O, Gurocak, S, Tunc, L, Sozen, S   +5 more
core   +1 more source

Sexual selection in a transparent worm : insights from fluorescent sperm [PDF]

, 2015
Sexual selection is a potent source of selection underlying the evolution of sexual dimorphism, reproductive strategies and mating systems. Although sexual selection was initially thought to occur exclusively at the pre-copulatory stage (e.g., contests ...
Marie-Orleach, Lucas
core   +1 more source

Correlation between high Choline metabolite signal in spectroscopy and sperm retrieval chance at micro-TESE

, 2022
OBJECTIVE: To determine the re lationship between choline (Cho) signal intensi ty measured before micro-dissection testicular sperm extraction (micro-TESE) and sperm re trieval rates in mTESE in non-obstructive azo ospermia (NOA) patients.
Özyurt, R., Karakuş, Cemil
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

Cryopreservation of Pike Perch Sperm in Hatchery Conditions [PDF]

, 2008
Experiments were carried out on pike perch (Sander lucioperca L.) to find a method for stripping sperm without contamination by urine, to determine sperm concentration, and to fertilize large batches of eggs with cryopreserved sperm.
Urbányi, Béla, Horváth, László, Horváth, Ákos, Bokor, Zoltán   +3 more
core   +1 more source

Association of higher serum follicle-stimulating hormone levels with successful microdissection testicular sperm extraction outcomes in nonobstructive azoospermic men with reduced testicular volumes

Asian Journal of Andrology
To investigate the impact of preoperative serum follicle-stimulating hormone (FSH) levels on the probability of testicular sperm retrieval, we conducted a study of nonobstructive azoospermic (NOA) men with different testicular volumes (TVs) who underwent
Ming-Zhe Song, Li-Jun Ye, Wei-Qiang Xiao, Wen-Si Huang, Wu-Biao Wen, Shun Dai, Li-Yun Lai, Yue-Qin Peng, Tong-Hua Wu, Qing Sun, Yong Zeng, Jing Cai   +11 more
doaj   +1 more source

Embodied attachments: IVF, the maternal body, and the making of embryo kinship

Feminist Anthropology, EarlyView.
Abstract Within the sphere of IVF (in vitro fertilization), there is increasing concern about the stockpiles of frozen embryos held in clinics across the country. This normative discourse tends to take the patient‐embryo relationship for granted, with salient political consequences for current embryo ‘personhood’ debates.
Manon Lefevre
wiley   +1 more source

Microdissection testicular sperm extraction: effect of prior biopsy on success of sperm retrieval

, 2007
We determined the effect of prior biopsies with no sperm seen on the chance of sperm retrieval with microdissection testicular sperm extraction in men with nonobstructive azoospermia. A total of 311 men with NOA underwent microdissection testicular sperm
Schlegel, Peter N, Ramasamy, Ranjith
core   +1 more source