Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 28 for “"-glucans"”.
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Controlled biosynthesis of yeast glucans
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Applied Biological Sciences, 1986.
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Urinary Excretion of (1-3)-Beta-D-Glucans.
<p>(1→3)-β-D-Glucans are carbohydrate polymers that are present in the cell wall of various fungi and bacteria; they are pathogen associated molecular patterns that circulate during infection and modulate immunity. Our laboratory has previously established the pharmacokinetics of intravenously and …
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Impact of Dietary Beta-glucan Supplementation on Performance and Immune Response of Broiler Chickens During Challenge
… One approach under development is the use of -glucans, which are carbohydrates from cell walls of various plant species. The first study evaluated the feeding effects of algae- derived -glucans on performance and responses of broilers during a coccidiosis challenge. Cobb 500 broilers (n=1280) …
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Mold Induced Asthma: Not all Molds are Created Equal
… spores had increased exposure of beta-glucans on their surface and were able to bind Dectin-1. Thus, the host response to C. cladosporioides¿¿ was IL-17A- and Dectin1-independent, while Dectin-1 and IL-17A-dependent pathways were protective against the development of asthma after …
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Evolutionary and functional study of plant cell wall polysaccharide glucomannan
… Although we could not clarify a role for CSLD glucans, we found that constitutive immune response occurs in the *csld5* mutant. Furthermore, we found that lignin deposition induced by a transcription factor MYB15 (myeloblastosis family 15) enhances pathogen resistance in *csld5*. These results …
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Simulations of carbohydrate conformational dynamics and thermodynamics
… is on the biologically important (1-4)-linked glucans, although the α(1-1) α and α(1-6) linkages are also investigated. Two principal types of potential of mean force (PMF) caltulation are used: free energy calculations for ratations about dihedral angles and end-to-end distance free energy …
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Glucan metabolism in mycobacterium and streptomyces
α-Glucans are typically used for carbon storage in bacteria, however, they are also a major component of the mycobacterial capsule. In this context, glucans have been implicated in the evasion of recognition by macrophages. A novel α-glucan synthesis pathway, called the GlgE pathway, is a potential …
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Immune and Endocrine Modulations Associated with Enhanced Plant-Based Protein Diets Within Freshwater Fish Species
… BSBM with 1% EXOP (49.55%), and BSBM with 0.1% b-glucans (40.47%), in comparison to the MDFM control diet (59.45%). At day 46, the macrophage RBA of the fish fed supplemented (EXOP and b-glucans) BSBM variants were greater than the FM control diet(P=0.009 and P=0.002, respectively). Lysozyme …
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Use of Bacillus subtilis starter cultures during red sorghum malting
… The problems associated with the hydrolysis of β-glucans and the biocontrol steeping effect on β-glucanase activities are discussed. The effect of the biocontrol treatment and that of phytohormones produced by the bacterial strain used on the synthesis of specific red sorghum enzymes are …
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The characterization of starches and maltodextrins by proton nuclear magnetic resonance spectroscopy
… to quantify the degree of branching in $\alpha$-glucans using proton nuclear magnetic resonance (NMR) has been developed. Instrument parameters and sample conditions were investigated for their effect on determining the $\alpha$-(1,4)/$\alpha$-(1,6) linkage ratios of starches. Two methods were …
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Nonstarch polysaccharides in sweet potato
… However, the presence of the hemicellulosic glucans in the insoluble fraction make the latter a more likely candidate for flatus-inducer.
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The effects of dietary β-glucan supplementation on performance and immune response of broiler chicks during an Eimeria challenge
… The gene expression results suggest that β-glucans are capable of skewing the host immune response toward aTh1 mediated response and consequently down-regulating the Th2 mediated response.
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PCR Detection of Streptococcus Mutans and Streptococcus Sobrinus in Dental Plaque Samples from Low, Moderate, and High Caries Risk Children
… Dextranase is an enzyme that hydrolyses glucans in a plaque matrix and is believed to be involved in the pathogenesis of dental caries. Identification of the amplified Dex gene sequences was made by gel electrophoresis which in turn was used to determine the presence of S. mutans and S. …
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Soluble fiber and resistant starch components in some Indian and Canadian wheat varieties and in a wheat-soy product - Chapati
… aimed to quantify resistant starch (RS) beta-glucans (BG) and fructo-oligosaccharides (FOS) in Indian and Canadian wheat varieties and in chapaties made from these; and to assess the effects of soy flour on the levels of these components and its effects on the sensory and functional properties …
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Genomic and Proteomic Characterisation of the European House Dust Mite, Dermatophagoides pteronyssinus
… Glu2 to exhibit hydrolytic activity toward β-1,3 glucans and have increased expression in the mite body and excretome of D. pteronyssinus in response to yeast diet. Further proteomic and enzymatic analysis correlated glucanase activity in house dust with presence of Glu1 and Glu2. These findings …
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Adsorption of Biomacromolecules onto Polysaccharide Surfaces
… degradation. The adsorption of two mixed linkage glucans (MLG), barley and lichen MLG, onto regenerated cellulose (RC) surfaces in the absence and presence of other matrix polysaccharides was studied. Viscoelastic properties of the resulting layer were compared as a function of the proprotion of …
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INNATE IMMUNITY IN ENCEPHALITIC BUNYAVIRUS INFECTION: OVERCOMING NEURONAL VULNERABILITY
… by blocking viral fusion. Additionally, two beta glucans were antiviral specifically in neurons, and likely decreased viral entry. These data clarify the mechanisms of neuronal vulnerability to bunyavirus infection, and show that innate IFNα/β responses are insufficient to protect these essential …
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Work-related asthma among workers in the Mozambique wood processing industry
… and non-viable microorganisms, endotoxins, glucans and allergens, with the potential to cause work-related asthma. While this association has been reported in diverse settings, few studies have comprehensively studied host and environmental risk factors for work-related asthma phenotypes …
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The cloning and characterization of an α-amylase and a branching enzyme from Butyrivibrio fibrisolvens H17c and their expression in Escherichia coli
… of between 5 to 10 glucose units using α-1,4 glucans as substrates, and to stimulate the "de novo" synthesis of a polysaccharide similar to glycogen.
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