Results 101 to 110 of about 57,007 (201)

Ploidy‐dependent modulation of DNA replication kinetics in Xenopus

open access: yesThe FEBS Journal, EarlyView.
Using an interspecies replication system with Xenopus frog species of different ploidy levels, we investigated how DNA replication adapts to polyploidization. While replication was slower in tetraploid than in diploid nuclei, dodecaploid nuclei unexpectedly replicated faster than tetraploid nuclei. Our findings show that increasing genome size does not
Hemalatha Narassimprakash   +4 more
wiley   +1 more source

Spermidine biosynthesis by hypervirulent Francisella tularensis promotes fitness and salvages adenine

open access: yesJournal of Bacteriology
Francisella tularensis is a highly infectious Tier 1 select agent that causes tularemia, a potentially fatal disease. F. tularensis subspecies tularensis (type A), including subtypes A.I and A.II, and subspecies holarctica (type B) differ considerably in
Yinshi Yue   +6 more
doaj   +1 more source

Cardioprotection and lifespan extension by the natural polyamine spermidine [PDF]

open access: yes, 2016
Aging is associated with an increased risk of cardiovascular disease and death. Here we show that oral supplementation of the natural polyamine spermidine extends the lifespan of mice and exerts cardioprotective effects, reducing cardiac hypertrophy and ...
Kiechl, Stefan   +190 more
core   +1 more source

Epigenetic and Metabolic Changes That Drive Trained Immunity in Response to Microbes and Vaccines

open access: yesImmunology, EarlyView.
This graphical abstract illustrates how microbial products, vaccines and microbial metabolites activate pattern‐recognition receptor signalling, inducing metabolic rewiring and epigenetic remodelling. These changes establish long‐lasting trained immunity through the functional reprogramming of haematopoietic progenitors and innate immune cells, thereby
Desalegn Abebaw   +10 more
wiley   +1 more source

Effect of Spermidine on Endothelial Function in Systemic Lupus Erythematosus Mice [PDF]

open access: yes
© 2024 by the authors. cc-byEndothelial dysfunction is common in Systemic Lupus Erythematosus (SLE), even in the absence of cardiovascular disease. Evidence suggests that impaired mitophagy contributes to SLE. Mitochondrial dysfunction is also associated
Hyoseon Kim   +3 more
core   +1 more source

DNA mesophases induced by spermidine: Structural properties and biological implications

open access: yes, 1996
Conditions of formation of DNA aggregates by the addition of spermidine were determined with 146 base pair DNA fragments as a function of spermidine and NaCl concentration.
Pelta, Juan   +3 more
core   +1 more source

Duckweeds under salt stress: a meta‐analysis of growth inhibition in relation to morphological and physiological traits and a systematic review of molecular responses

open access: yesNew Phytologist, EarlyView.
Salinity reduces duckweed growth responses. Summary Salinity is one of the main environmental factors limiting the performance of duckweeds and despite growing ecological and biotechnological interest in these macrophytes, there is a lack of quantitative analyses of their responses to sodium chloride.
Saimon Branco Bueno   +7 more
wiley   +1 more source

Characterization of spermidine binding to solubilized plasma membrane proteins from zucchini hypocotyls

open access: yes, 1998
In this work [14C]spermidine binding to total proteins solubilized from plasma membrane purified from zucchini (Cucurbita pepo I.) hypocotyls was investigated. Proteins were solubilized using octyl glucosidc as a detergent. Specific polyamine binding was
Battistini M. L.   +9 more
core   +1 more source

Perturbation of Spermine Homoeostasis Uncouples Hypersensitive Cell Death From Systemic Plant Immunity

open access: yesPlant, Cell &Environment, EarlyView.
ABSTRACT Polyamines are key regulators of plant stress responses, yet their contribution to coordinating local immune responses with systemic immunity remains poorly understood. Here, we investigated how spermine (Spm) homeostasis influences local and systemic defence responses in Arabidopsis thaliana following inoculation with Pseudomonas syringae pv.
Jiaqi Zhao   +3 more
wiley   +1 more source

Spermidine restores dysregulated autophagy and polyamine synthesis in aged and osteoarthritic chondrocytes via EP300

open access: yesExperimental and Molecular Medicine, 2018
Aging: toward a natural treatment for osteoarthritis The naturally occurring small molecule spermidine might prevent and repair the cartilage damage in osteoarthritis, commonly associated with aging.
Pradeep K. Sacitharan   +3 more
doaj   +1 more source

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