keyword
MENU ▼
Read by QxMD icon Read
search

Anti polysaccharide

keyword
https://www.readbyqxmd.com/read/28822188/-characterization-and-activity-effect-on-adh-of-polysaccharides-from-mori-fructus
#1
Xing Wang, Qing-Fang Deng, Hua-Guo Chen, Xin Zhou
Mori Fructus polysaccharides (MFPs) have been used as a source of therapeutic agents. The most promising activities of these biopolymers are their immunomodulation and anti-cancer effects. It was reported that polysaccharides were a potential drug against liver injury, but the hepatoprotective effect of MFPs was ambiguous. In this study, the fractionation of crude polysaccharides on DEAE-Cellulose 52 gave four fractions (MFP-1, MFP-2, MFP-2 and MFP-4). The results showed that the contents of carbohydrates were 75...
June 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28821152/the-common-lavender-lavandula-angustifolia-mill-pectic-polysaccharides-modulate-phagocytic-leukocytes-and-intestinal-peyer-s-patch-cells
#2
Yordan N Georgiev, Berit S Paulsen, Hiroaki Kiyohara, Milan Ciz, Manol H Ognyanov, Ondrej Vasicek, Frode Rise, Petko N Denev, Haruki Yamada, Antonin Lojek, Vesselin Kussovski, Hilde Barsett, Albert I Krastanov, Irina Z Yanakieva, Maria G Kratchanova
Two pectic (chPS-L1, chPS-L2) and one polyphenolic (chPP-L) fractions were obtained from lavender flowers after boiling water extraction, exhaustive removing of alcohol-soluble molecules and SEC. chPS-L1 (52.4kDa) contains mainly low-acetylated and high-methoxylated homogalacturonans (HG), and smaller rhamnogalacturonan (RG) I backbone fragments rich in 1,3,5-branched arabinan and arabinogalactan (AG) II side chains. chPS-L2 (21.8kDa) contains predominantly similarly esterified HG, followed by RGI with AGII structures and RGII...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28821095/an-o-acetyl-glucomannan-from-the-rhizomes-of-curculigo-orchioides-structural-characterization-and-anti-osteoporosis-activity-in-vitro
#3
Xueqian Wang, Mengliu Zhang, Dawei Zhang, Shumei Wang, Chunyan Yan
Osteoporosis is characterized by a reduction in bone mass and bone mineral density, which weakens the bone. Due to the side effects associated with drugs that are currently used to treat this disease, an increasing number of studies have focused on the research of effective ingredients derived from natural products. In particular, polysaccharides extracted from Chinese herbal medicines have received increasing attention. In this study, we isolated a homogeneous polysaccharide (COP90-1) from the dried rhizomes of Curculigo orchioides, a famous traditional Chinese medicine that is widely used in China, and determined its structure using the combined methods of chemical and spectral analyses...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28818784/does-polysaccharide-is-an-idea-template-selection-for-glycosyl-imprinting
#4
Jianping Li, Xionghui Ma, Mengxi Li, Yun Zhang
A novel glycoprotein imprinting strategy was proposed and was applied to the detection of the carbohydrate antigen 19-9. The glycosylated complex of glycoprotein was used as template to construct a glycosyl imprinted sensor. The eluted imprinted cavities showed good affinity for template glycosyls and glycoproteins carrying template glycosyl. The effect of template saccharide structure on glycosyl imprinted sensors is further discussed. More complex template structures can lead to better sensor performance including selectivity and sensitivity...
August 3, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28818721/immunomodulatory-effects-of-herbal-formula-of-astragalus-polysaccharide-aps-and-polysaccharopeptide-psp-in-mice-with-lung-cancer
#5
Xing Zhou, Zijing Liu, Tingting Long, Lijng Zhou, Yixi Bao
OBJECTIVE: This study is to investigate the immunomodulatory effects of the herbal formula of astragalus polysaccharide (APS) and polysaccharopeptide (PSP) in mouse models of immunosuppression and lung cancer. METHODS: Immune parameters were recorded for these model mice. Peripheral white blood cells (WBC) were detected with the automatic blood cell analyzer. Spleen and thymus indices, and tumor inhibition ratio were obtained. Percentage of peripheral blood CD4(+) and CD8(+) T lymphocytes were detected by flow cytometry...
August 14, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28816630/glycoproteins-and-polysaccharides-are-the-main-class-of-active-constituents-required-for-lymphocyte-stimulation-and-antigen-specific-immune-response-induction-by-traditional-medicinal-herbal-plants
#6
Young-Ok Son, Sung-Ho Kook, Jeong-Chae Lee
Traditional herbal remedies stimulate and modulate the immune system, and it is thought that their glycoproteins and polysaccharides are responsible for this activity. We prepared crude water, protein, and polysaccharide extracts from Atractylodes macrocephala Koidz, Helianthus annuus L., Scutellaria barbata D. Don, and Hedyotis diffusa Willd, respectively, and compared their immune-stimulating activities in vitro and in vivo. All protein and polysaccharide samples of the plants led to greater lymphocyte proliferation and TNF-α and IL-6 production in cultured splenocytes than did the crude water extracts at the same concentrations tested...
August 17, 2017: Journal of Medicinal Food
https://www.readbyqxmd.com/read/28811960/rehmannia-glutinosa-polysaccharide-induces-toll-like-receptor-4-dependent-spleen-dendritic-cell-maturation-and-anti-cancer-immunity
#7
Li Xu, Minseok Kwak, Wei Zhang, Ling Zeng, Peter Chang-Whan Lee, Jun-O Jin
Rehmannia glutinosa polysaccharide (RGP) has shown an activation of immune cells in vitro. However, the immune stimulatory effect of RGP in a mouse in vivo is not well studied. In this study, we examined the effect of RGP on dendritic cell (DC) activation and anticancer immunity in vivo. Treatments of RGP in C56BL/6 mice induced increased levels of co-stimulatory molecule expression and pro-inflammatory cytokine production in spleen DCs dependent on toll-like receptor 4 (TLR4), and those DCs promoted interferon-gamma (IFNγ) production in CD4(+) and CD8(+) T cells...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28810530/caspase-dependent-and-caspase-independent-induction-of-apoptosis-in-breast-cancer-by-fucoidan-via-the-pi3k-akt-gsk3%C3%AE-pathway-in-vivo-and-in-vitro
#8
Meilan Xue, Xinqiang Ji, Chuanxing Xue, Hui Liang, Yinlin Ge, Xinjia He, Li Zhang, Kang Bian, Lichen Zhang
Purpose Fucoidan, a complex, sulfated polysaccharide obtained from brown seaweed, exerted anticancer activity through the down-regulation of β-catenin signaling in mouse breast cancer cells in our previous study. This study examines the anti-cancer effects of fucoidan as well as its underlying molecular mechanisms in the human triple negative breast cancer (TNBC) cell line and in 7,12-dimethylbenz[a]anthracene (DMBA)-induced experimental mammary carcinogenesis in rats. Methods in vitro studies, fluorescent staining, flow cytometry and Western blotting were performed to analyze apoptosis and protein expression in human breast cancer MDA-MB-231 cells...
August 11, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28807689/effects-of-polysaccharides-from-abalone-viscera-haliotis-discus-hannai-ino-on-mgc-803cells-proliferation
#9
Rui-Juan Zhang, Yan Shi, Jing Zheng, Xiao-Mei Mao, Zhi-Yu Liu, Qing-Xi Chen, Qin Wang
The polysaccharides (AVP) was obtained from abalone (Haliotis discus hannai Ino) viscera, using the alkaline protease to enzymolysis, sevage method and repeated freezing and thawing method to remove protein and hydrogen peroxide method to depigment. The total sugar content was 46.27±1.5% and uronic acid, sulfate radical, hexosamine and protein contents were 17.44±0.22%, 16.98±0.15%, 0.65±0.02% and 1.64±0.13% in AVP respectively. The main monosaccharide compositions of AVP were D-galactose, D-xylose, D-mannose, D-glucose and D-glucuronic acid...
August 11, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28805704/effects-of-adding-polysaccharides-and-citric-acid-into-sodium-dihydrogen-phosphate-mixing-solution-on-the-material-properties-of-gelatin-hybridized-calcium-phosphate-cement
#10
Keishi Kiminami, Toshiisa Konishi, Minori Mizumoto, Kohei Nagata, Michiyo Honda, Hidetoshi Arimura, Mamoru Aizawa
We have succeeded in improving the material properties of a chelate-setting calcium-phosphate cement (CPC), which is composed of hydroxyapatite (HAp) the surface of which has been modified with inositol hexaphosphate (IP6) by adding α-tricalcium phosphate (α-TCP) powder. In order to create a novel chelate-setting CPC with sufficient bioresorbability, gelatin particles were added into the IP6-HAp/α-TCP cement system to modify the material properties. The effects of adding polysaccharides (chitosan, chondroitin sulfate, and sodium alginate) into the sodium dihydrogen phosphate mixing solution on the material properties of the gelatin-hybridized CPC were evaluated...
August 12, 2017: Materials
https://www.readbyqxmd.com/read/28797813/sulfated-modification-and-anticoagulant-activity-of-pumpkin-cucurbita-pepo-lady-godiva-polysaccharide
#11
Li Liang, Le Ao, Tao Ma, Yuanying Ni, Xiaojun Liao, Xiaosong Hu, Yi Song
Sulfated modification of pumpkin polysaccharide using CAS with pyridines as catalysts under different conditions was conducted to obtain different degrees of sulfation on a laboratory scale. Anticoagulant activities of pumpkin polysaccharide and its sulfated derivatives were also investigated employing various established in vitro systems. Results showed that addition of high ratio of CAS/pyridine under constant conditions could increase the degree of substitution. Sulfate substitution was further confirmed by the FT-IR and 13C NMR analysis...
August 7, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28797729/vaccination-with-shigella-flexneri-2a-conjugate-induces-type-2a-and-cross-reactive-type-6-antibodies-in-humans-but-not-in-mice
#12
Nahid Farzam, Reut Ramon-Saraf, Yonit Banet-Levi, Liat Lerner-Geva, Shai Ashkenazi, Joanna Kubler-Kielb, Evgeny Vinogradov, John B Robbins, Rachel Schneerson
Shigella flexneri (S. flexneri) 6 has emerged as an important cause of shigellosis. Our efficacy study of Shigella sonnei and S. flexneri 2a O-specific polysaccharide (O-SP) conjugates in 1-4year-olds had too few S. flexneri 2a cases for efficacy evaluation but surprisingly showed protection of 3-4year-olds, S. flexneri 2a-recipients, from S. flexneri 6 infection. To investigate this cross-protection antibodies to both Shigella types were investigated in all sera remaining from previous studies. Twenty to 30% of 3-44year-old humans injected with S...
August 7, 2017: Vaccine
https://www.readbyqxmd.com/read/28794055/effect-of-vaccine-elicited-antibodies-on-colonization-of-neisseria-meningitidis-serogroup-b-and-c-strains-in-a-human-bronchial-epithelial-cell-culture-model
#13
Vianca Vianzon, Beate Illek, Gregory R Moe
Capsular polysaccharide-protein conjugate vaccines protect individuals from invasive disease and decrease carriage, which reduces spread of the organism in the population. In contrast, antibodies elicited by plain polysaccharide or protein antigen-based meningococcal (Men) vaccines have little or no effect on decreasing carriage. In this study, we investigated the mechanism by which vaccine-induced human IgG antibodies affect colonization by serogroup B (MenB) or C (MenC) strains using a human bronchial epithelial cell culture model (16HBE14o-)...
August 9, 2017: Clinical and Vaccine Immunology: CVI
https://www.readbyqxmd.com/read/28792229/eugenol-exhibits-anti-virulence-properties-by-competitively-binding-to-quorum-sensing-receptors
#14
Prasanth Rathinam, H S Vijay Kumar, Pragasam Viswanathan
The primary objective of this study was to ascertain the anti-biofilm and anti-virulence properties of sub-minimum inhibitory concentration (MIC) levels of eugenol against the standard strain PAO1 and two multi-drug resistant P. aeruginosa clinical isolates utilizing quorum sensing inhibition (QSI). Eugenol at 400 μM significantly reduced biofilm formation on urinary catheters and the virulence factors (VF) including extracellular polysaccharides, rhamnolipid, elastase, protease, pyocyanin, and pyoverdine (p < 0...
August 9, 2017: Biofouling
https://www.readbyqxmd.com/read/28789591/microwave-assisted-extraction-and-pharmacological-evaluation-of-polysaccharides-from-posidonia-oceanica
#15
Yosra Ben Salem, Amal Abdelhamid, Khaoula Mkadmini Hammi, Didier Le Cerf, Abderrahman Bouraoui, Hatem Majdoub
Microwave-assisted extraction was employed for the isolation of polysaccharides from Posidonia oceanica (PPO). The extracting parameters were optimized adopting response surface methodology. The highest polysaccharide yield (2.55 ± 0.09%), which is in concordance with the predicted value (2.76%), was obtained under the following conditions: extraction time 60 s, liquid-solid ratio of 50:1 (mL/g) and power of 800 W. This polysaccharide, with molecular weight of 524 KDa, characterized by gas chromatography-mass spectrometry showed that PPO was mainly composed of galactose, glucose, and arabinose with molar percentages 25...
August 9, 2017: Bioscience, Biotechnology, and Biochemistry
https://www.readbyqxmd.com/read/28782613/the-regulation-of-inflammation-and-oxidative-status-against-lung-injury-of-residue-polysaccharides-by-lentinula-edodes
#16
Zhenzhen Ren, Juan Li, Xinling Song, Jianjun Zhang, Wenshuai Wang, Xiuxiu Wang, Zheng Gao, Huijuan Jing, Shangshang Li, Le Jia
In present study, two hydrolyzed residue polysaccharides (RPS) of enzymatic-RPS (ERPS) and acidic-RPS (ARPS) were successfully obtained from the residue of Lentinula edodes, and the anti-inflammatory as well as antioxidative effects on lipopolysaccharide-induced (LPS-induced) lung injured mice were investigated. The results demonstrated that ERPS showed superior lung protective effects by ameliorating the lung wet-to-dry weight (W/D) ratio, reducing the TNF-α, IL-6, and IL-1β levels in BALF, lowing the pulmonary MPO activity, decreasing the serum C3 and hs-CPR contents, as well as improving the antioxidant status by enhancing pulmonary enzyme activities (SOD, GSH-Px, CAT, and T-AOC) and eliminating the lipid peroxidation (MDA and LPO), respectively...
August 3, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28777290/anti-coagulant-and-anti-thrombotic-properties-of-blacklip-abalone-haliotis-rubra-in-vitro-and-animal-studies
#17
Hafiz Ansar Rasul Suleria, Paul P Masci, Kong-Nan Zhao, Rama Addepalli, Wei Chen, Simone A Osborne, Glenda C Gobe
Sulphated polysaccharides with anti-thrombotic and anti-coagulant activities have been found in various marine biota. In this study, a previously characterised anti-thrombotic and anti-coagulant extract from blacklip abalone was fractionated by anion exchange chromatography (AEC), pooled (on a sulphated polysaccharide basis) and administered to Wistar rats via oral gavage (N = 8) for assessment as an oral therapeutic. To ensure that the preparation had anti-coagulant activity prior to oral administration, it was assessed in rat blood by thromboelastography (TEG) significantly increasing reaction (R) time (or time until clot formation)...
August 4, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28776978/multilayered-polysaccharide-nanofilms-for-controlled-delivery-of-pentoxifylline-and-possible-treatment-of-chronic-venous-ulceration
#18
Jan Stana, Janja Stergar, Lidija Gradišnik, Vojko Flis, Rupert Kargl, Eleonore Fröhlich, Karin Stana Kleinschek, Tamilselvan Mohan, Uroš Maver
Local drug delivery systems made from nontoxic polysaccharide nanofilms have an enormous potential in wound care. A detailed understanding of the structural, surface, physicochemical, and cytotoxic properties of such systems is crucial to design clinically efficacious materials. Herein, we fabricated polysaccharide-based nanofilms onto either a 2D model (SiO2 and Au sensors) or on nonwoven alginate 3D substrates using an alternating assembly of N,N,N-trimethylchitosan (TMC) and alginic acid (ALG) by a spin-assisted layer-by-layer (LbL) technique...
August 22, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28774703/pretreatment-with-propylene-glycol-alginate-sodium-sulfate-ameliorated-concanavalin-a-induced-liver-injury-by-regulating-the-pi3k-akt-pathway-in-mice
#19
Shizan Xu, Liwei Wu, Qinghui Zhang, Jiao Feng, Sainan Li, Jingjing Li, Tong Liu, Wenhui Mo, Wenwen Wang, Xiya Lu, Qiang Yu, Kan Chen, Yujing Xia, Jie Lu, Ling Xu, Yingqun Zhou, Xiaoming Fan, Chuanyong Guo
AIMS: Propylene glycol alginate sodium sulfate (PSS), a sulfated polysaccharide possesses anti-inflammatory effects. Here, we investigated the effect of PSS on concanavalin A (Con A)-induced liver injury in mice and examined the underlying mechanisms. MAIN METHODS: Balb/C mice were injected intravenously with Con A (25mg/kg) to generate a model of acute liver injury. PSS (25 or 50mg/kg) was injected intraperitoneally 1h before the Con A administration. The levels of serum liver enzymes, inflammatory cytokines, and other marker proteins were determined, and liver injury was assessed histopathologically 2, 8, and 24h after Con A injection...
July 31, 2017: Life Sciences
https://www.readbyqxmd.com/read/28774562/defective-anti-polysaccharide-igg-vaccine-responses-in-iga-deficient-mice
#20
Yoichi Furuya, Girish S Kirimanjeswara, Sean Roberts, Rachael Racine, Jennifer Wilson-Welder, Alan M Sanfilippo, Sharon L Salmon, Dennis W Metzger
We report that IgA(-/-) mice exhibit specific defects in IgG antibody responses to various polysaccharide vaccines (Francisella tularensis LPS and Pneumovax), but not protein vaccines such as Fluzone. This defect further included responses to polysaccharide-protein conjugate vaccines (Prevnar and Haemophilus influenzae type b-tetanus toxoid vaccine). In agreement with these findings, IgA(-/-) mice were protected from pathogen challenge with protein- but not polysaccharide-based vaccines. Interestingly, after immunization with live bacteria, IgA(+/+) and IgA(-/-) mice were both resistant to lethal challenge and their IgG anti-polysaccharide antibody responses were comparable...
July 31, 2017: Vaccine
keyword
keyword
52137
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"