Results 51 to 60 of about 533,967 (266)

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

Assessment of Cinnamaldehyde’s Potency on Heat Stress-induced Testicular Impairments in Wistar Rats

Journal of Human Reproductive Sciences
Background: Male sterility results from high testicular temperatures, which affect mammalian spermatogenesis. High testicular temperatures affect sperm motility, morphology and fertility according to their magnitude and duration.
Pazhanisankar Muthusamy, Dapkupar Wankhar, Jeyakumari Paul, Nivetha Ravishankar, Ravindran Rajan   +4 more
doaj   +1 more source

The novel genomic DNA integrity in neutral buffer formalin, Bouin’s fluid, and zinc formalin fixatives: A comparative study [PDF]

Iraqi Journal of Veterinary Sciences
DNA extraction was successfully performed on all samples with variable concentrations. Fifteen liver samples were subjected to the extraction technique, with five liver samples utilized from each fixative, this comparison study aimed to assess DNA ...
Amani A. Alayash, Firas M. Abed
doaj   +1 more source

Air-Drying Llama Sperm Affects DNA Integrity

Frontiers in Veterinary Science, 2020
The objective of this study was to evaluate the effects of air-drying preservation on llama sperm DNA. Semen collections were carried out using electroejaculation under general anesthesia.
María Ignacia Carretero, María Ignacia Carretero, María Ignacia Carretero, María Graciela Chaves, María Graciela Chaves, Claudia Cecilia Arraztoa, Claudia Cecilia Arraztoa, Fernanda Gabriela Fumuso, Fernanda Gabriela Fumuso, Fernanda Gabriela Fumuso, Mariana Carla Gambarotta, Deborah Margarita Neild, Deborah Margarita Neild   +12 more
doaj   +1 more source

Hyperosmotic stress induces PARP1‐mediated HPF1‐dependent mono(ADP‐ribosyl)ation

FEBS Letters, EarlyView.
Sorbitol‐induced hyperosmotic stress rapidly induces reversible mono(ADP‐ribosyl)ation (MARylation) on PARP1 without the signs of genotoxic signaling. We show that PARP1 autoMARylation is HPF1 dependent and forms hydroxylamine‐resistant O‐glycosidic linkages.
Anna Georgina Kopasz, Mihály Mérey, Rebeka Vásárhelyi, Ramóna Pék, Victor Imburchia, László Henn, Adrián Kószó, Nicholas D. Lakin, Ivan Ahel, Sébastien Huet, Ágnes Czibula, Gyula Timinszky   +11 more
wiley   +1 more source

Interference of small compounds and Mg2+ with dsRNA-binding fluorophores compromises the identification of SARS-CoV-2 RdRp inhibitors

Scientific Reports
The COVID-19 pandemic highlighted the need for the rapid development of antiviral therapies. Viral RNA-dependent RNA polymerases (RdRp) are promising targets, and numerous virtual screenings for potential inhibitors were conducted without validation of ...
Susana Llanos, Bruno Di Geronimo, Ester Casajús, Elena Blanco-Romero, Rafael Fernández-Leiro, Juan Méndez   +5 more
doaj   +1 more source

Epigenetic blind spots – the role of DNA methylation dynamics in stem cell‐based models of embryogenesis

FEBS Letters, EarlyView.
Embryo‐like structures (stembryos) are an innovative tool, but they are hindered by experimental variability and limited developmental potential. DNA methylation is crucial for mammalian development, but its status in stembryo models is poorly characterized.
Sara Canil, Anna Corrà, Annalisa Scapolatiello, Chengxiang Qiu, Gianluca Amadei   +4 more
wiley   +1 more source

The ubiquitin‐proteasome system and autophagy as guardians of the cellular proteome

FEBS Letters, EarlyView.
This Perspective covers the three principles governing the crosstalk between the ubiquitin‐proteasome system and autophagy in cellular proteostasis: (1) a shared ubiquitin code routing substrates via shuttle factors or autophagy receptors; (2) spatial compartmentalization into phase‐separated degradation hubs and organelle‐specific modules (exemplified
Ivan Dikic
wiley   +1 more source

An unexpected alternative viologen electron mediator site in tungsten‐containing formate dehydrogenase

FEBS Letters, EarlyView.
An unexpected alternative interaction site for ethyl viologen was identified in formate dehydrogenase 1 from Methylorubrum extorquens. Combined mutagenesis, kinetic analysis, and docking revealed that aromatic residues near an iron–sulfur cluster enable flavin mononucleotide‐independent electron transfer, offering a framework for engineering improved ...
Eleni G. Poloniataki, Yong Hwan Kim
wiley   +1 more source

Cell geometry and membrane protein crowding constrain Escherichia coli growth rate, overflow metabolism, respiration, and maintenance energy

FEBS Letters, EarlyView.
The physical dimensions and shape of bacterial cells define the surface area available to acquire nutrients and the volume available for synthesizing proteins and DNA. Here, we use computational systems biology to decode the importance of cell geometry as a major determinant of prokaryotic phenotype, including growth rate and metabolic efficiency. This
Ross P. Carlson, Tomáš Gedeon, Mauricio Garcia Benitez, Campbell Putnam, William R. Harcombe, Radhakrishnan Mahadevan, Ashley E. Beck   +6 more
wiley   +1 more source