trehalose/cárie dentária

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Bisgaardia miroungae sp. nov., a new member of the family Pasteurellaceae isolated from the oral cavity of northern elephant seals (Mirounga angustirostris), and emended description of the genus Bisgaardia.

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A total of 17 bacterial isolates from northern elephant seals, tentatively classified within the family Pasteurellaceae, were further characterized by genotypic and phenotypic tests. Phylogenetic analysis of partial 16S rRNA and rpoB gene sequences showed that the isolates investigated formed a

Testudinibacter aquarius gen. nov., sp. nov., a member of the family Pasteurellaceae isolated from the oral cavity of freshwater turtles.

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A total of 13 Pasteurellaceae isolates from healthy freshwater turtles were characterized by genotypic and phenotypic tests. Phylogenetic analysis of partial 16S rRNA and rpoB gene sequences showed that the isolates investigated formed a monophyletic group. The closest related species based on 16S

Low-cariogenicity of trehalose as a substrate.

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OBJECTIVE The effects of trehalose on cariogenesis by mutans streptococci were investigated. METHODS Inhibited effect of trehalose on water-insoluble glucan (WIG) synthesis from sucrose by glucosyltransferase (GTase) of mutans streptococci was assayed. The acid fermentability of trehalose by mutans

Otariodibacter oris gen. nov., sp. nov., a member of the family Pasteurellaceae isolated from the oral cavity of pinnipeds.

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A total of 27 bacterial isolates from California sea lions and a walrus tentatively classified within the family Pasteurellaceae was further characterized by genotypic and phenotypic tests. Phylogenetic analysis of partial 16S rRNA and rpoB gene sequences showed that the isolates investigated formed

The crystal structure of a liganded trehalose/maltose-binding protein from the hyperthermophilic Archaeon Thermococcus litoralis at 1.85 A.

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We report the crystallization and structure determination at 1.85 A of the extracellular, membrane-anchored trehalose/maltose-binding protein (TMBP) in complex with its substrate trehalose. TMBP is the substrate recognition site of the high-affinity trehalose/maltose ABC transporter of the

Size-tunable trehalose-based nanocavities: synthesis, structure, and inclusion properties of large-ring cyclotrehalans.

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An efficient strategy toward the synthesis of large-ring cyclodextrin (CD) analogs alternating alpha,alpha'-trehalose disaccharide subunits and pseudoamide segments (cyclotrehalans, CTs), involving a bimolecular macrocyclization reaction as the key step, is reported. NMR and molecular modeling

Synthesis, structure, and inclusion capabilities of trehalose-based cyclodextrin analogues (cyclotrehalans).

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Concise and efficient strategies toward the synthesis of D2h- and D3h-symmetric cyclodextrin analogues alternating alpha,alpha'-trehalose disaccharide subunits and pseudoamide segments (cyclotrehalans, CTs) are reported. The conformational properties of these cyclooligosaccharides are governed by

Growth inhibition of tumour cells by a liposome-encapsulated, mycolic acid-containing glycolipid, trehalose 2,3,6'-trimycolate.

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In vivo growth of syngeneic tumour cells in the peritoneal cavity was strongly inhibited by intraperitoneal injection of a liposome-encapsulated, mycolic acid-containing glycolipid, trehalose 2,3,6'-trimycolate (TTM), derived from a non-pathogenic, acid-fast bacterium. Gordona aurantiaca. Peritoneal

Stimulation of thymocyte mitogenic protein secretion and of cytostatic activity of mouse peritoneal macrophages by trehalose dimycolate and muramyldipeptide.

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Immunomodulators of bacterial origin, such as muramyl-dipeptide (MDP) and trehalose dimycolate, are able to stimulate some important biological functions of macrophages, such as their capacity to secrete a monokine, the thymocyte mitogenic protein (TMP), and to limit the growth of mastocytoma cells

Geminate rebinding in trehalose-glass embedded myoglobins reveals residue-specific control of intramolecular trajectories.

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It is becoming increasingly apparent that hydrophobic cavities (also referred to as xenon cavities) within proteins have significant functional implications. The potential functional role of these cavities in modulating the internal dynamics of carbon monoxide in myoglobin (Mb) is explored in the

Mouse cachexia induced by trehalose dimycolate from Nocardia asteroides.

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Trehalose dimycolate (TDM) isolated from Nocardia asteroides induced in mice a severely wasted condition known as cachexia. Intraperitoneal injection of mice with five 10 micrograms doses of TDM in mineral oil at intervals of 2 d killed 90% of the animals within 26 d. Death followed a precipitous

Analysis of surface cavity in serpin family reveals potential binding sites for chemical chaperone to reduce polymerization.

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Serpin constitute about 10% of blood protein and are associated with mutations that results in aberrant intermolecular linkages which leads to polymer formation. Studies with short peptides have shown promise in depolymerization of serpins however a reactive center loop based peptide also makes the

Certain surfactants significantly enhance the activity of antibiotics in the mouse model of MTB and drug resistant MTB infection and effectively remove the bacteria from a pulmonary cavity in human ex-vivo study.

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Surfactants have the potential to overcome natural resistance of MTB to antibiotics which is mediated by barriers that impede the penetration of drugs to their targets. A major component of this barrier is trehalose dimycolate (TDM) which surrounds the bacteria with a thick lipid shield. In this

Trehalose synthesis inhibitor: A molecular in silico drug design.

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Infectious diseases are serious public health problems, affecting a large portion of the world's population. A molecule that plays a key role in pathogenic organisms is trehalose and recently has been an interest in the metabolism of this molecule for drug development. The trehalose-6-phosphate

Role of trehalose dimycolate in recruitment of cells and modulation of production of cytokines and NO in tuberculosis.

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Mice treated with viable Mycobacterium tuberculosis with no glycolipid trehalose dimycolate (TDM) on the outer cell wall (delipidated M. tuberculosis) by intraperitoneal or intratracheal inoculation presented an intense recruitment of polymorphonuclear cells into the peritoneal cavity and an acute

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