Results 181 to 190 of about 8,362,741 (232)

Male Mice Heterozygous for Protamine 1 and Protamine 2 Are Infertile, Displaying Sperm Damage and Retention of Protamine 2 Precursors, Transition Proteins, and Histones

Andrology, EarlyView.
ABSTRACT Background During spermiogenesis, protamines (PRMs) replace histones to hypercondense and protect sperm DNA. Rodents and primates express two PRMs (PRM1 and PRM2). Alterations of species‐specific PRM ratios are associated with sub‐ or infertility in mice and humans.
Gina Esther Merges, Christoph Wiesejahn, Mar Domingo‐Lopez, Simon Schneider, Andjela Kovacevic, Lena Arévalo, Hubert Schorle   +6 more
wiley   +1 more source

Father–Son Comparison of Reproductive Traits

Andrology, EarlyView.
ABSTRACT Background Little is known about the relative contribution of genetic and environmental factors on male reproductive function. Objectives We studied in a cross‐sectional setting, whether testicular function and genital size correlate in father–son pairs.
Heidi Elamo, Wiwat Rodprasert, Louise Scheutz Henriksen, Niels Jørgensen, Niels E. Skakkebaek, Anders Juul, Helena Ollila, Katharina M. Main, Jorma Toppari, Helena E. Virtanen   +9 more
wiley   +1 more source

Can We Predict the Outcome of Micro Testicular Sperm Extraction in Non-Obstructive Azoospermia From Preoperative Hormonal Profile, Testicular Volume, and Patients Health Factors: A Retrospective Cross-Sectional Study. [PDF]

Am J Mens Health
Al-Zubi M, Al-Khawaldeh S, Mallak M, Al-Dghaim M, Zytoon R, Abbas R, Alhabahbeh A, Alfadel M, Abuorouq S, Al-Magableh MR, Alkhateeb AN, Alboon MR, Al Demour S, Al-Rawashdah SF.   +13 more
europepmc   +1 more source

Male Sexual and Reproductive Health in Diabetes and Obesity Pharmacotherapy: A Source‐Triangulated Counseling Map

Andrology, EarlyView.
ABSTRACT Background Drugs used for diabetes and obesity increasingly shape male sexual and reproductive counseling, but clinical studies, trial registrations, regulatory labels, and patents answer different questions. Objectives The objective is to map these sources and define what each can support when counseling men receiving metabolic drugs ...
Marek Broul, Michal Dubský, Aneta Hujová, Michaela Liegertová   +3 more
wiley   +1 more source

Testicular Volume of 4 mL Is Not an Appropriate Marker of Pubertal Onset in a Subset of Boys Born Small for Gestational Age.

Sex Dev
Suco S, Bedecarrás P, Ballerini MG, Ropelato MG, Braslavsky D, Rodriguez ME, Keselman A, Rey RA, Grinspon RP.   +8 more
europepmc   +1 more source

Bone Health and Aging in Klinefelter Syndrome

Andrology, EarlyView.
ABSTRACT Klinefelter syndrome (KS) is typically diagnosed in young adults, but advances in prenatal testing have led to its recognition at a much earlier age. Conversely, diagnosis in late adulthood remains uncommon, but still occurs. Independently from the age at diagnosis, KS individuals now receive more accurate and tailored care management than in ...
Filippo Vignali, Daniele Renda Livraghi, Francesco Costantino, Sara De Vincentis, Vincenzo Rochira   +4 more
wiley   +1 more source

Melatonin Administration Enhances Testicular Volume, Testicular Blood Flow, Semen Parameters and Antioxidant Status during the Non-Breeding Season in Bafra Rams. [PDF]

Animals (Basel)
Akar M, Çevik M, Kocaman A, Kaya C, Esin B, Björkman S.   +5 more
europepmc   +1 more source

The Impact of Common Medications on Male Fertility: An Updated Systematic Review

Andrology, EarlyView.
ABSTRACT Background Compared with those of cytotoxic treatments, the potential effects of common medications on the fertility of men trying to conceive currently or planning to conceive in the future are less well described. The use of common medications may modify the gonadotropic axis, spermatogenesis, and epididymal maturation or alter male ...
Lina Jebli, Salomé Gallissian, Roxanne Barèges, Félicia Fournier, Catherine Metzler‐Guillemain, Ségolène Prades, Fanny Magnan‐Sebag, Jeanne Perrin   +7 more
wiley   +1 more source

Marginal Changes in Semen Quality Over Three Decades (1996‒2022) Among 8320 Men in the Danish Young Men Study (DYMS): Cohort Profile and Trends

Andrology, EarlyView.
ABSTRACT Background Since the 1990s, declining sperm counts and increasing testicular cancer rates have raised worldwide concern about male reproductive health, including in Denmark. This prompted a prospective population‐based study with annual surveillance of semen quality.
Lærke Priskorn, Cille Baslund‐Storch, Laura S. Hansen, Astrid L. Beck, Ann H. Hansen, Stine A. Holmboe, Loa Nordkap, Anne Kirstine Bang, Rune Lindahl‐Jacobsen, Christine Dalgård, Anna‐Maria Andersson, Tina K. Jensen, Anders Juul, Niels Jørgensen   +13 more
wiley   +1 more source

Lactate‐Responsive Glycogen Dynamics Are Associated With Bull Sperm Motility and Fertilization Under Glucose‐Limited Conditions

Andrology, EarlyView.
ABSTRACT Background Mammalian sperm need to undergo hyperactivation, capacitation, and acrosome reaction to achieve fertilization competence. However, the female reproductive tract presents contrasting metabolic environments. The uterus is glucose‐rich, and the oviduct is lactate‐rich and glucose‐limited.
Md Faizul Hossain Miraz, Takahiro Yamanaka, Takashi Umehara, Shahrina Akter, Wambugu Enoc Njoroge, Masayuki Shimada   +5 more
wiley   +1 more source