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Characterization of Bordetella pertussis growing as biofilm by chemical analysis and FT-IR spectroscopy.

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Although Bordetella pertussis, the etiologic agent of whooping cough, adheres and grows on the ciliated epithelium of the respiratory tract, it has been extensively studied only in liquid cultures. In this work, the phenotypic expression of B. pertussis in biofilm growth is described as a first

The antitussive activity of polysaccharides from Althaea officinalis l., var. Robusta, Arctium lappa L., var. Herkules, and Prunus persica L., Batsch.

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BACKGROUND The therapy of pathological type of cough presents serious medical problem. OBJECTIVE The aim of experiments was to investigate polysaccacharide influence on experimentally induced cough. METHODS The purified and/or modified polysaccharides from the flowers and plants, characterized by

Characterization and biological activity of Solidago canadensis complex.

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Polyphenolic-polysaccharide-protein complex has been isolated from flowers of Solidago canadensis L. by hot alkaline extraction procedure. Compositional analyses of S canadensis complex revealed the presence of carbohydrates (43 wt%), protein (27 wt%), phenolics (12 wt%), uronic acids (10 wt%) and

The relationship between dose-dependent antitussive and bronchodilatory effects of Opilia celtidifolia polysaccharide and nitric oxide in guinea pigs.

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A crude polysaccharide composed of uronic acids (32%), arabinose (26%), glucose (15%), galactose (11%), rhamnose (7%), mannose (5%), xylose (4%) and small amount of fucose residues has been isolated from the leaves of Opilia celtidifolia by boiled water extraction. Chemical analyses of Opilia

The pharmacological activity of wheat bran polysaccharides.

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(Glucurono)arabinoxylans were extracted from the wheat bran with acetate buffer in the first step (WBH1) and with dilute alkali in the second step (WBH2). In both samples xylose and arabinose dominated, accompanied with smaller amounts of galactose, glucose, mannose and uronic acids mainly in WBH1.

Characterization and pharmacodynamic properties of Arnica montana complex.

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A dark brown polymeric complex was isolated from flowering parts of medicinal plant Arnica montana L. by hot alkaline extraction followed by neutralization and multi-step extractions with organic solvents. It was recovered in 5.7% yield, on GPC showed two peaks of molecular mass of 9 and 3.5kDa. The

Structural characterization and anti-asthmatic effect of α-l-arabino(4-O-methyl-α-d-glucurono)-β-d-xylan from the roots of Rudbeckia fulgida

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Many native plant biopolymers or derivatives thereof have interesting biological effects and therefore the search for additional biological activities is important to map their overall effects. A low molecular weight (M_w = 7600 g/mol) hemicellulose polymer

Antitussive activity of a glucuronoxylan from Rudbeckia fulgida compared to the potency of two polysaccharide complexes from the same herb.

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An alkali-extracted low-molecular glucuronoxylan and two water-extractable polysaccharide complexes isolated from various parts of Rudbeckia fulgida were tested for antitussive activity on mechanically induced cough in nonanaesthetized cats. Glucuronoxylan consisted of a (1-->4)-linked

Structural Characteristics and Biological Effects of Exopolysaccharide Produced by Cyanobacterium Nostoc Sp

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Complex structure of cyanobacterium Nostoc sp. exopolysaccharide (EPS), with apparent molecular weight 214 × 10³ g/mol, can be deduced from its composition. Chemical and NMR analyses found four dominant sugar monomers, namely (1 → 4)-linked α-l-arabinopyranose, β-d-glucopyranose,

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