Results 1 to 10 of about 225,684 (400)

A Guanosine‐Quadruplex Hydrogel as Cascade Reaction Container Consuming Endogenous Glucose for Infected Wound Treatment—A Study in Diabetic Mice

open access: yesAdvanced Science, 2022
Diabetic foot ulcers infected with antibiotic‐resistant bacteria form a severe complication of diabetes. Antimicrobial‐loaded hydrogels are used as a dressing for infected wounds, but the ongoing rise in the number of antimicrobial‐resistant infections ...
Linzhu Su, Yong Liu, Fan Huang
exaly   +2 more sources

SpoT Induces Intracellular Salmonella Virulence Programs in the Phagosome. [PDF]

open access: yes, 2020
Guanosine tetraphosphate (ppGpp) and guanosine pentaphosphate (pppGpp), together named (p)ppGpp, regulate diverse aspects of Salmonella pathogenesis, including synthesis of nutrients, resistance to inflammatory mediators, and expression of secretion ...
Fitzsimmons, Liam F   +8 more
core   +1 more source

Associations between purine metabolites and clinical symptoms in schizophrenia [PDF]

open access: yes, 2012
Background: The antioxidant defense system, which is known to be dysregulated in schizophrenia, is closely linked to the dynamics of purine pathway. Thus, alterations in the homeostatic balance in the purine pathway may be involved in the pathophysiology
Debra M. Montrose   +9 more
core   +7 more sources

Simultaneous quantification of 12 different nucleotides and nucleosides released from renal epithelium and in human urine samples using ion-pair reversed-phase HPLC [PDF]

open access: yes, 2012
Nucleotides and nucleosides are not only involved in cellular metabolism but also act extracellularly via P1 and P2 receptors, to elicit a wide variety of physiological and pathophysiological responses through paracrine and autocrine signalling pathways.
Alberto Contreras-Sanz   +60 more
core   +2 more sources

Microtubules grow by the addition of bent guanosine triphosphate tubulin to the tips of curved protofilaments

open access: yesJournal of Cell Biology, 2018
We used electron tomography to examine microtubules (MTs) growing from pure tubulin in vitro as well as two classes of MTs growing in cells from six species.
J. McIntosh   +8 more
semanticscholar   +1 more source

Determination of total potentially available nucleosides in bovine milk [PDF]

open access: yes, 2010
Bovine colostrum and milk samples were collected from two herds over the course of the first month post-partum, pooled for each herd by stage of lactation and total potentially available nucleosides were determined.
Gill, Brendon D.   +2 more
core   +2 more sources

Synthetic (p)ppGpp analogue is an inhibitor of stringent response in mycobacteria [PDF]

open access: yes, 2017
Bacteria elicit an adaptive response against hostile conditions such as starvation and other kinds of stresses. Their ability to survive such conditions depends, in part, on stringent response pathways.
Bhardwaj, Neerupma   +6 more
core   +2 more sources

Cyclic nucleotide specificity of the activator and catalytic sites of a cGMP-stimulated cGMP phosphodiesterase from Dictyostelium discoideum [PDF]

open access: yes, 1985
The cellular slime mold Dictyostelium discoideum has an intracellular phosphodiesterase which specifically hydrolyzes cGMP. The enzyme is activated by low cGMP concentrations, and is involved in the reduction of chemoattractant-mediated elevations of ...
Baraniak, Janina,   +8 more
core   +2 more sources

Loss of angiotensin II receptor expression in dopamine neurons in Parkinson’s disease correlates with pathological progression and is accompanied by increases in Nox4- and 8-OH guanosine-related nucleic acid oxidation and caspase-3 activation [PDF]

open access: yes, 2015
In rodent models of Parkinsons disease (PD), dopamine neuron loss is accompanied by increased expression of angiotensin II (AngII), its type 1 receptor (AT1), and NADPH oxidase (Nox) in the nigral dopamine neurons and microglia.
Aboud, O   +6 more
core   +2 more sources

Guanosine-Derived Supramolecular Hydrogels: Recent Developments and Future Opportunities

open access: yesACS Omega, 2018
Hydrogels are attractive materials for designing sensors, catalysts, scaffolds for tissue engineering, stimuli responsive soft materials, and controlled-release drug delivery systems.
Tanima Bhattacharyya, P. Saha, J. Dash
semanticscholar   +1 more source

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