Results 61 to 70 of about 448,010 (312)

Trade-off between somatic and germline repair in a vertebrate supports the "expensive germ line" hypothesis [PDF]

, 2020
The disposable soma theory is a central tenet of the biology of aging where germline immortality comes at the cost of an aging soma [T. B. L. Kirkwood, Nature 270, 301–304 (1977); T. B. L. Kirkwood, Proc. R. Soc. Lond. B Biol. Sci. 205, 531–546 (1979); T.
Bublys, Kasparas, Chen, Hwei-Yen, Immler, Simone, Jolly, Cecile, Marcu, Daniel   +4 more
core   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

FEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Cyp26b1 expression in murine Sertoli cells is required to maintain male germ cells in an undifferentiated state during embryogenesis. [PDF]

PLoS ONE, 2009
In mammals, germ cells within the developing gonad follow a sexually dimorphic pathway. Germ cells in the murine ovary enter meiotic prophase during embryogenesis, whereas germ cells in the embryonic testis arrest in G0 of mitotic cell cycle and do not ...
Hui Li, Glenn MacLean, Don Cameron, Margaret Clagett-Dame, Martin Petkovich   +4 more
doaj   +1 more source

Prolonged fasting induces significant germ cell loss in chickens after hatching

Poultry Science, 2023
: Germ cell loss is a crucial biological event during germ cell development. The number of female germ cells determines the reproductive performance and egg production of hens.
Jiawen Chen, Liping Pu, Yajing Niu, Kui Tian, Xiaoxuan Jia, Lang Zhang, Yangqing Lu   +6 more
doaj   +1 more source

Correlation of the differential expression of PIK3R1 and its spliced variant, p55α, in pan‐cancer

Molecular Oncology, EarlyView.
PIK3R1 undergoes alternative splicing to generate the isoforms, p85α and p55α. By combining large patient datasets with laboratory experiments, we show that PIK3R1 spliced variants shape cancer behavior. While tumors lose the protective p85α isoform, p55α is overexpressed, changes linked to poorer survival and more pronounced in African American ...
Ishita Gupta, Yang Song, Madeleine Ndahayo, Anirudh Saxena, Theresa Guo, Dylan Z. Kelley, Jessica Gore, Andrew Hennigan, Alexa Anderson, John C. Papadimitriou, Daria A. Gaykalova   +10 more
wiley   +1 more source

The fate of germ cells in cryptorchid testis

Frontiers in Endocrinology
Cryptorchidism in males constitutes a notable risk factor for both infertility and testicular cancer. Infertility in adulthood is closely linked to the germ cell status in childhood.
Jorgen Thorup, Jorgen Thorup, Simone Hildorf, Andrea E. Hildorf, Jonas M. Baastrup, Linn Salto Mamsen, Claus Yding Andersen, Tina E. Olsen, Dina Cortes, Dina Cortes   +9 more
doaj   +1 more source

Workshop on Germ Cells [PDF]

Frontiers in Cell and Developmental Biology, 2018
Germ cell research in vertebrates has traditionally been challenging, but recent breakthroughs have overcome technical difficulties, demonstrating and expanding the power of the zebrafish experimental system for their analysis in vivo. Exploiting the transparency of the zebrafish embryo, germ cell migration was the first topic that moved the germ cells
Roland Dosch, Roland Dosch
openaire   +4 more sources

Differential expression of conserved germ line markers and delayed segregation of male and female primordial germ cells in a hermaphrodite, the leech helobdella. [PDF]

, 2013
In sexually reproducing animals, primordial germ cells (PGCs) are often set aside early in embryogenesis, a strategy that minimizes the risk of genomic damage associated with replication and mitosis during the cell cycle.
Cho, Sung-Jin, Vallès, Yvonne, WEISBLAT, David A.   +2 more
core   +2 more sources

dUTPase is essential in zebrafish development and possesses several single‐nucleotide variants with pronounced structural and functional consequences

FEBS Open Bio, EarlyView.
dUTPases are involved in balancing the appropriate nucleotide pools. We showed that dUTPase is essential for normal development in zebrafish. The different zebrafish genomes contain several single‐nucleotide variations (SNPs) of the dut gene. One of the dUTPase variants displayed drastically lower protein stability and catalytic efficiency as compared ...
Viktória Perey‐Simon, Angéla Békesi, Latifa Kazzazy, Jázmin Mihály, Máté Varga, Beáta G. Vértessy, Kinga Nyíri   +6 more
wiley   +1 more source

Actomyosin-mediated apical constriction promotes physiological germ cell death in C. elegans.

PLoS Biology
Germ cell apoptosis in Caenorhabditis elegans hermaphrodites is a physiological process eliminating around 60% of all cells in meiotic prophase to maintain tissue homeostasis. In contrast to programmed cell death in the C.
Tea Kohlbrenner, Simon Berger, Ana Cristina Laranjeira, Tinri Aegerter-Wilmsen, Laura Filomena Comi, Andrew deMello, Alex Hajnal   +6 more
doaj   +1 more source