Murine IgG responses specific for the capsular polysaccharide (pneumococcal capsular polysaccharide serotype 14; PPS14) of Streptococcus pneumoniae type 14 (Pn14), induced in response to intact Pn14 or a PPS14-protein conjugate, are both dependent on CD4(+) T cell help but appear to use marginal zone versus follicular B cells, respectively. In this study, we identify an idiotype (44.1-Id) that ...

1. An organism has been isolated from peat soil which decomposes the specific capsular polysaccharide of Type III Pneumococcus. 2. The isolation has been made possible by the use of a synthetic mineral medium containing the specific polysaccharide as sole source of carbon. By repeated transfers in this medium the potential capacity of the organism to decompose the specific substance has been pr...

hepatitis c virus (hcv) has infected 3% of the population worldwide and 20% of the population in egypt. hcv infection can lead to hepatocellular carcinoma and death. the presently available treatment with interferon plus ribavirin, has limited benefits due to adverse side effects. seaweeds have become a major source of new compounds to treat viral diseases. this work aimed to study the effect o...

A protocol was developed to extract, fractionate, and quantitatively analyze periphyton extracellular polymeric substances (EPS), which obtains both information on the molecular weight (M r) distribution and protein and polysaccharide content. The EPS were extracted from freshwater periphyton between July and December 2011. Organic carbon (OC) compounds from different EPS extracts were analyzed...

BACKGROUND The aims of this study were to evaluate the antidiabetic activity and to detect molecular size of Pseudostellaria heterophylla polysaccharide (PHP). Pseudostellaria heterophylla is a medicine extensively used in traditional Chinese medicine formulas to treat diabetes and its complications. METHODS Molecular weight of PHP was determined by gel permeation chromatography combined with...

The larvae of the Japanese horned beetle, Trypoxylus dichotomus (Coleoptera: Scarabaeidae: Dynastinae), are an example of a saprophage insect. Generally, Scarabaeid larvae, such as T. dichotomus, eat dead plant matter that has been broken down by fungi, such as Basidiomycota. It is thought that β-1,3-glucan, a constituent polysaccharide in microbes, is abundant in decayed plant matter. Studies ...

A pectic fraction, accounting for about 0.3% of the total cell wall polysaccharide, was derived from the hot water extract of an insoluble fraction of the buffer-homogenate of Zea shoots. The pectic polysaccharide fraction was characterized by fragmentation analysis after hydrolysis with acid and Erwinia carotovora pectate lyase. The results suggest that the fraction consists of mostly a linear...

Bacteria degrading algal polysaccharides are key players in the global carbon cycle and in algal biomass recycling. Yet the water column, which has been studied largely by metagenomic approaches, is poor in such bacteria and their algal-polysaccharide-degrading enzymes. Even more surprisingly, the few published studies on seaweed-associated microbiomes have revealed low abundances of such bacte...

Introduction: Northern border region of Saudi Arabia is one the richest areas traditional plants. This study was designed with an interest to work on polysaccharide extracted from Astragalus spinosis leaves (PLAS) collected rafha province.
 Methods: Polysaccharide isolated by hot water extraction, followed ethanol precipitation. The crude contains 62.43% ±2.09% carbohydrate and 0.29 ± 0.07...

The water-soluble polysaccharide (SCP) was isolated from Semen Coicis through hot water extraction followed by ethanol precipitation. The polysaccharide was deproteinized by using the Sevag reagent, and the polysaccharide was free of proteins as scan by UV Spectra in 260 nm and 280 nm. In order to evaluate its antioxidant activities, Free radicals scavenging activities on superoxide radicals, h...