Results 61 to 70 of about 66,840 (319)

Symmetry Breaking in Meniscus Splitting: Effects of Boundary Conditions and Polymeric Membrane Growth

open access: yesAdvanced Science, EarlyView.
Meniscus splitting in the drying of a viscous polymer dispersion is investigated by focusing on nucleation of multiple nuclei with symmetry breaking and asynchronous nucleus formation. Controlled by spatial boundaries, the first nucleus is generated at a position shifted away from the space center and strongly facilitates the asynchronous second ...
Thi Kim Loc Nguyen   +4 more
wiley   +1 more source

Synthesis and in vitro cytotoxicity of acetylated 3-fluoro, 4-fluoro and 3,4-difluoro analogs of D-glucosamine and D-galactosamine

open access: yesBeilstein Journal of Organic Chemistry, 2016
Background: Derivatives of D-glucosamine and D-galactosamine represent an important family of the cell surface glycan components and their fluorinated analogs found use as metabolic inhibitors of complex glycan biosynthesis, or as probes for the study of
Štěpán Horník   +8 more
doaj   +1 more source

Effects of Oral Glucosamine Hydrochloride Administration on Plasma Free Amino Acid Concentrations in Dogs

open access: yesMarine Drugs, 2011
We examined the effects of oral glucosamine hydrochloride (GlcN), N-acetyl-D-glucosamine (GlcNAc) and D-glucose (Glc) administration on plasma total free amino acid (PFAA) concentrations in dogs. The PFAA concentrations increased in the control group and
Saburo Minami   +6 more
doaj   +1 more source

Chitin and Chitosan Derivatives as Biomaterial Resources for Biological and Biomedical Applications

open access: yesMolecules, 2020
Chitin is a long-chain polymer of N-acetyl-glucosamine, which is regularly found in the exoskeleton of arthropods including insects, shellfish and the cell wall of fungi.
Saravut Satitsri, Chatchai Muanprasat
doaj   +1 more source

A Novel nor@DHB Matrix for Direct Microbial Analysis in Lung Cancer Tissues

open access: yesAdvanced Science, EarlyView.
Integrated matrix‐assisted laser desorption/ionization mass spectrometry workflow quantifies intratumoral microbes in lung cancer through lipopolysaccharide/lipid A extraction from biopsies. The novel ionic matrix called norharmane conjugated to 2,5‐dihydroxybenzoic acid enhances lipid A ionization, enabling direct detection of bacterial genera ...
Liang Shan   +12 more
wiley   +1 more source

The Pleiotropic Effects of Beneficial Mutations of Adapted Escherichia coli Populations [PDF]

open access: yes, 2014
Mutations that improve fitness in one environment can often be beneficial, deleterious, or neutral in alternative environments. When a single mutation effects fitness in multiple environments, it is said to be a pleiotropic, which can have important ...
Van Dam, Brian Scott
core   +1 more source

Applications and interest of chitin, chitosan and their derivatives in enology

open access: yesOENO One, 2005
This review treats of the possible use interest of chitin, chitosan and derivatives in enology. Chitosan and chitin are polysaccharide polymers containing more than 5 000 glucosamine and acetylglucosamine units, respectively, and their molecular weights ...
Aurélie Bornet, Pierre-Louis Teissedre
doaj   +1 more source

Modulating Macrophage–Nucleus Pulposus Cell Crosstalk via Sequential Drug Delivery Attenuates Disc Degeneration

open access: yesAdvanced Science, EarlyView.
The G‐CS/MSN drug delivery system enhances intervertebral disc repair through sequential drug release. Abstract Intervertebral disc degeneration (IDD) is characterized by an inflammatory environment and dysregulation of the extracellular matrix metabolism (ECM).
Xiangzhen Kong   +12 more
wiley   +1 more source

Immobilized photosensitizers for antimicrobial applications [PDF]

open access: yes, 2015
Photodynamic antimicrobial chemotherapy (PACT) is a very promising alternative to conventional antibiotics for the efficient inactivation of pathogenic microorganisms; this is due to the fact that it is virtually impossible for resistant strains to ...
Boyle, Ross W.   +2 more
core   +1 more source

Drosophila GFAT1 and GFAT2 enzymes encode obligate developmental functions

open access: yesFly, 2020
Glutamine: fructose-6-phosphate amidotransferase (GFAT) enzymes catalyse the first committed step of the hexosamine biosynthesis pathway (HBP) using glutamine and fructose-6-phosphate to form glucosamine-6-phosphate (GlcN6P). Numerous species (e.g. mouse,
Po Chen, Sarah Visokay, John M. Abrams
doaj   +1 more source

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