Results 61 to 70 of about 17,774 (206)

Reproductive Challenges of the Ageing Female: A Comprehensive Narrative Review

BJOG: An International Journal of Obstetrics &Gynaecology, EarlyView.
ABSTRACT Changes in societal norms over the last few decades have resulted in novel family planning trends, notably delayed childbearing and increased maternal age at the birth of the first child. Despite advances in reproductive medicine, ageing poses significant challenges.
Sofia Bitzika, Meletios P. Nigdelis, Angelos Daniilidis, Erich‐Franz Solomayer, Irene Lambrinoudaki, Efstratios M. Kolibianakis, Dimitrios G. Goulis   +6 more
wiley   +1 more source

Histological Insights into Testicular Apoptosis Associated with Spermatogenesis in Pre-Pubertal and Adult Meagre (Argyrosomus regius)

Animals
To overcome reproductive dysfunctions, recombinant gonadotropin hormones have been synthesised in different fish species. We were interested in gaining further insight into the effects of recombinant follicle-stimulating hormone (rFsh) in meagre ...
Gianluca Ventriglia, Neil Duncan, Ignacio Giménez, Constantinos C. Mylonas, Chrysovalentinos Pousis, Caterina Varvara, Luisa Valentini, Letizia Passantino, Aldo Corriero, Rosa Zupa   +9 more
doaj   +1 more source

The use of deidentified organ donor testes for research

Andrology, EarlyView.
Abstract Our knowledge of testis development and function mainly comes from research using mammalian model organisms, primarily the mouse. However, there are integral differences between men and other mammalian species regarding cellular composition and expression profiles during fetal and post‐natal testis development and in the mature testis ...
Marina V. Pryzhkova, Marnie W. Skinner, Juliana I. Candelaria, Stephen R. Wellard, Philip W. Jordan   +4 more
wiley   +1 more source

Plant Gametogenesis

, 2022
This volume provides protocols and methods on techniques to study plant gametogenesis. Chapters are divided into four sections covering omics, cytological, molecular approaches, plant transformation, genome editing, bioinformatics, and data analysis.
openaire   +1 more source

Shaping Future Children, Sex Selection, and “Normal” Human Capacities

Bioethics, EarlyView.
ABSTRACT If we think that parents have an obligation to have a healthy child then we need to know what counts as healthy, when male and female children are born with very different capacities. If we give up on the idea that our obligations to use technologies of genetic selection are discharged once we try to secure the birth of a healthy child, as ...
Robert Sparrow
wiley   +1 more source

Programmed Genome Elimination Is Evolutionarily Conserved Across Pelophylax Hybrids—As Evidenced by P. grafi Hybridogenetic Reproduction

Biology
Gametogenesis is a fundamental biological process that ensures both genetic recombination and the continuity of successive generations. Interspecific hybrids can reproduce through modified mechanisms, such as hybridogenesis, by transmitting clonal ...
Anna Dudzik, Beata Rozenblut-Kościsty, Dmitrij Dedukh, Pierre-André Crochet, Lukáš Choleva, Monika Przewłocka-Kosmala, Zuzanna Stryczak, Maria Ogielska, Magdalena Chmielewska   +8 more
doaj   +1 more source

Mesoscale Oceanographic Processes Drive the Seasonal Abundance of the Seabob Shrimp Xiphopenaeus spp. on the Eastern Brazilian Shelf

Fisheries Oceanography, EarlyView.
ABSTRACT The seabob shrimp (Xiphopenaeus spp.) is a primary fishery resource in Brazil, with considerable economic and social importance along the coast. While environmental drivers of its life cycle are well‐documented for southeastern and southern populations, the factors modulating populations in the Eastern Brazilian Shelf remain poorly understood,
Leandro Bonesi Rabelo, Júlio Neves de Araújo, Agnaldo Silva Martins   +2 more
wiley   +1 more source

The full-length BEND2 protein is dispensable for spermatogenesis but required for setting the ovarian reserve in mice

eLife
Infertility affects up to 12% of couples globally, with genetic factors contributing to nearly half of the cases. Advances in genomic technologies have led to the discovery of genes like Bend2, which play a crucial role in gametogenesis.
Yan Huang, Nina Bucevic, Carmen Coves, Natalia Felipe-Medina, Marina Marcet-Ortega, Nikoleta Nikou, Cristina Madrid-Sandín, Maria López-Panadés, Carolina Buza, Neus Ferrer Miralles, Antoni Iborra, Anna Pujol, Alberto M Pendás, Ignasi Roig   +13 more
doaj   +1 more source

Role of the tomato MARS1/ROUGH gene encoding a LYSINE‐SPECIFIC HISTONE DEMETHYLASE 1 in adventitious root and fruit skin formation

Journal of Integrative Plant Biology, EarlyView.
The tomato mars1/rough mutant displays enhanced root regeneration and rough fruits due to ectopic cell proliferation. The causal gene encodes a lysine‐specific histone demethylase that normally maintains gene silencing. Its loss alters histone methylation, upregulating several genes, including those B‐type cyclins involved in tissue‐specific cellular ...
Eduardo Larriba, Cécile Bres, Aurora Alaguero‐Cordovilla, Riyazuddin Riyazuddin, Qingyi Wang, Johann Petit, Jean‐Philippe Mauxion, Lara Caballero, David Latrasse, Bénédicte Bakan, Rim Brik‐Chaouche, David Esteve‐Bruna, Moussa Benhamed, Christophe Rothan, José Manuel Pérez‐Pérez   +14 more
wiley   +1 more source

Chicken or egg? The evolutionary riddle of CMS and Rf in plants

Journal of Integrative Plant Biology, EarlyView.
Cytoplasmic male sterility (CMS) reduces pollen fertility and nuclear Rf genes restore fertility. This Commentary explores support for the “arms race” and “pre‐adaptation” models for CMS–Rf co‐evolution. CMS and Rf interact dynamically, influencing plant reproduction, stress tolerance, and hybrid seed production, highlighting co‐evolutionary processes ...
Peilin Wang, Zhe Zhao, Qibin Wu, Yaoguang Liu, Youxiong Que   +4 more
wiley   +1 more source