Results 51 to 60 of about 138,467 (157)

Beyond Testis Size: Links between Spermatogenesis and Sperm Traits in a Seasonal Breeding Mammal.

PLoS ONE, 2015
Spermatogenesis is a costly process that is expected to be under selection to maximise sperm quantity and quality. Testis size is often regarded as a proxy measure of sperm investment, implicitly overlooking the quantitative assessment of spermatogenesis.
Eliana Pintus, José Luis Ros-Santaella, José Julián Garde   +2 more
doaj   +1 more source

Sperm Cell in ART

, 2012
Infertility today represents a global problem. Male factor contributes in approximately 50% of infertile couples. In the last decade we are witnesses of the decreased quality of semen and the increased frequency of testicular cancer and cryptorchidism.
Dejan Ljiljak, Tamara Tramiak, Neda Smiljan, Krunoslav Kuna, Anelka Radoji   +4 more
openaire   +3 more sources

Cell-specific cis-natural antisense transcripts (cis-NATs) in the sperm and the pollen vegetative cells of Arabidopsis thaliana [version 1; referees: 2 approved]

F1000Research, 2018
Background: cis-NATs (cis-natural antisense transcripts) are transcribed from opposite strands of adjacent genes and have been shown to regulate gene expression by generating small RNAs from the overlapping region.
Peng Qin, Ann E. Loraine, Sheila McCormick   +2 more
doaj   +1 more source

Ferroptosis emerges as the predominant form of regulated cell death in goat sperm cryopreservation

Journal of Animal Science and Biotechnology
Background Freezing-induced sperm damage, often associated with oxidative stress, can result in regulated cell death. Given that oxidative stress can trigger various forms of regulated cell death, the prevailing form during sperm cryopreservation remains
Erhan Hai, Boyuan Li, Yukun Song, Jian Zhang, Jiaxin Zhang   +4 more
doaj   +1 more source

Sperm freezing damage: the role of regulated cell death

Cell Death Discovery
Substantial progress in research on sperm cryopreservation has occurred since the twentieth century, especially focusing on improving sperm freezing procedures and optimizing semen extenders.
Erhan Hai, Boyuan Li, Jian Zhang, Jiaxin Zhang   +3 more
doaj   +1 more source

An Efficient Approach for RNA Extraction from Boar Sperm and Seminal Plasma

Bio-Protocol, 2019
Despite transcriptional silencing in mature sperm and cytoplasmic expulsion of RNA during the final sperm maturation process, thousands of RNAs have been successfully identified in ejaculated sperm. Although most of RNAs’ function is still unknown, it is
Vanmathy Kasimanickam, Ramanathan Kasimanickam   +1 more
doaj   +1 more source

Connecting Droplet Adhesion with Sperm Kinematics: A New Paradigm in Sperm Quality Monitoring

Advanced Materials Interfaces
Conventional microscopy‐driven sperm health monitoring systems suffer from high infrastructural costs and complex protocols. Here, a simple, economical sperm motility assessment system is proposed.
Sudip Shyam, Sirshendu Misra, Veronika Magdanz, Sushanta K Mitra   +3 more
doaj   +1 more source

Ongoing graft-versus-host disease is a risk factor for azoospermia after allogeneic hematopoietic stem cell transplantation: a survey of the Late Effects Working Party of the European Group for Blood and Marrow Transplantation

Haematologica, 2013
The aim of this study was to assess the degree of spermatogenesis defects in sperm analysis in long-term male survivors after allogeneic hematopoietic stem cell transplantation in order to identify the risk factors related to potential infertility after ...
Alicia Rovó, Mahmoud Aljurf, Sandra Chiodi, Simonetta Spinelli, Nina Salooja, Gülsan Sucak, Ann Hunter, Tan Swee Kim, Gérard Socié, Maria Teresa van Lint, Jakob R. Passweg, Mutlu Arat, Manuela Badoglio, André Tichelli   +13 more
doaj   +1 more source

The Surface Proteome of Bovine Unsexed and Sexed Spermatozoa

Animals
Current sperm sexing methods are costly and largely restricted to cattle, while immunological techniques targeting sex-specific membrane proteins may offer more economical alternatives.
Patrícia Pinto-Pinho, Joana Quelhas, Francis Impens, Sara Dufour, Delphi Van Haver, Graça Lopes, António Rocha, Rosário Pinto-Leite, Margarida Fardilha, Bruno Colaço   +9 more
doaj   +1 more source

Sperm DNA and detection of DNA fragmentations in sperm

Urology Research and Practice, 2019
The questionable effectiveness of routine sperm parameters in determining male factor infertility problems and increasing the success rates of assisted reproductive techniques have led to the investigation of more detailed sperm parameters that could ...
Niyazi Küçük
doaj   +1 more source