Results 51 to 60 of about 150,553 (148)

Tipping the Scales Using Cryopreservation: Modelling the Genetic Value and Management Potential of Integrated Cryopreservation for Threatened Ex‐Situ Pupfish Populations

Animal Conservation, EarlyView.
This graphical abstract depicts the number of additional fish that would be required to achieve 90% genetic diversity for endangered pupfish species housed in EAZA collections, with or without the use of cryopreserved material. ABSTRACT Zoos and aquaria must retain genetic diversity for the species they house if the populations are to remain viable ...
James Edward Brereton, Susan L. Walker, Andrew Mooney, Pedro Machado, Elmar Fienieg, Elena Hunter   +5 more
wiley   +1 more source

Fresh or frozen testicular sperm? Guidance from an etiology-classified retrospective study on ICSI cycles for patients with azoospermia

Asian Journal of Andrology
Using testicular sperm, men with azoospermia can father children. Sperm cryopreservation helps avoid the risk of cycle canceling because of the failure of testicular sperm retrieval.
Zi-Jue Zhu, Liang-Hong Ma, Cun-Zhong Deng, Fu-Rong Bai, Peng Li, Li-Na Zhou, Shan Jiang, Xiao-Jin He, Zheng Li, Wei Chen   +9 more
doaj   +1 more source

Semen quality in patients with testicular cancer is associated with age and with greatly elevated levels of beta human chorionic gonadotropin

Andrology, EarlyView.
Abstract Background Poor semen quality is a well‐known feature in patients with testicular germ cell tumours (GCTs) at the time of diagnosis but the underlying biological reasons are incompletely understood. Objectives This study aimed to identify GCT‐specific clinical factors that are involved with poor semen quality in GCT patients.
Klaus‐Peter Dieckmann, Johanna Hochmuth‐Tisch, Andrea Salzbrunn, Cord Matthies, Kathrein von Kopylow, Marta Godlewska, Christian Wülfing, Uwe Pichlmeier, Armin Soave, Christian Guido Ruf   +9 more
wiley   +1 more source

Difference values of sperm parameters during cryopreservation.

, 2015
Data are presented as mean ± SE. Superscripts A, B, C, and D indicate significant differences between cryopreservation steps; a,b,c, and d indicate significant differences between sperm parameters by one-way analysis of variance (P < 0.05, n = 9 ...
Md Saidur Rahman (468875), Sung-Jae Yoon (671845), Woo-Sung Kwon (287164), June-Sub Lee (734578), Myung-Geol Pang (287172)   +4 more
core   +1 more source

Sperm Telomere Interactions Are Impaired in Testicular Cancer Before and After Adjuvant Therapy

Andrology, EarlyView.
ABSTRACT Background No study has yet explored telomere length or interaction in sperm nuclei of testicular cancer (TC) patients exposed to chemotherapy or radiotherapy. However, sperm telomere dynamics have emerged as a potential marker in male infertility.
Benoit Berby, Sylvianne Hennebicq, Jacqueline Saias, Florence Brugnon, Isabelle Berthaut, Myriam Daudin, Louis Bujan, Ludovic Dumont, Christine Rondanino, Aurélie Feraille, Nathalie Rives   +10 more
wiley   +1 more source

Sperm cryopreservation: effects on chromatin structure.

, 2013
Cryopreservation is a technique that can keep sperm alive indefinitely, enabling the conservation of male fertility. It involves the cooling of semen samples and their storage at -196°C in liquid nitrogen.
Francesco Lombardo, LENZI, Andrea, GANDINI, Loredana, LOMBARDO, Francesco, Loredana Gandini, Donatella Paoli, Andrea Lenzi, PAOLI, Donatella   +7 more
core   +1 more source

Cryopreservation of Spermatozoa Prior and Post‐Orchiectomy in Patients With Testicular Germ Cell Cancer—Does the Timing Matter?

Andrology, EarlyView.
ABSTRACT Background Testicular germ cell cancer (TGCC) is the most frequent malignancy in young men of reproductive age. According to guidelines, semen cryopreservation should be performed prior to orchiectomy. Lack of time and local facilities as well as mental pressure are challenges in terms of fertility preservation before surgery.
Yuhe Tang, Gerald Pühse, Sabine Kliesch, Jann‐Frederik Cremers, Maria Schubert   +4 more
wiley   +1 more source

Sperm motility and viability percentages of thirty sperm samples before and after cryopreservation and Percoll separation.

, 2018
Sperm motility and viability percentages of thirty sperm samples before and after cryopreservation and Percoll separation.
Marek Rodina (5638718), Ievgen Lebeda (5638712), Mariola A. Dietrich (4993373), Pavlo Fedorov (5638715), Borys Dzyuba (5638721), Yevhen Horokhovatskyi (5638709)   +5 more
core   +1 more source

Impact of Chemotherapy on Sperm Functional Characteristics in Patients With Testicular Germ Cell Tumours

Andrology, EarlyView.
ABSTRACT Background Testicular germ cell tumours (TGCT) are the most common malignancies among young men and represent a major threat to reproductive health. Both the disease itself and oncological treatments, particularly chemotherapy, can compromise spermatogenesis and semen quality.
Ondrej Sanovec, Ondrej Simonik, Zuzana Kratka, Lukas Ded, Jana Vondrakova, Maryam Qasemi, Barbora Bryndova, Michala Krejci, Daniela Spevakova, Vishma Pratap Sur, Radomir Kren, Tomas Hradec, Pavel Skrobanek, Ludmila Boublikova, Libor Zamecnik, Tomas Buchler, Jiri Neuzil, Pavla Postlerova, Katerina Komrskova   +18 more
wiley   +1 more source

Hyperactivation and Tyrosine Phosphorylation of Cryopreserved Stallion Spermatozoa in Relation to Conventional In Vitro Fertilization Blastocyst Production

Andrology, EarlyView.
ABSTRACT Background Challenges in establishing clinical conventional in vitro fertilization (IVF) in horses include variation in sperm and oocyte quality, which can be affected by mare age. Extended preincubation of stallion spermatozoa has resulted in successful IVF.
Raul A. Gonzalez‐Castro, Carolina C. Porflidt, Alexandra L. Ash, Jacobo S. Rodriguez, Perla D. Fleury, Edward L. Squires, Elaine M. Carnevale   +6 more
wiley   +1 more source