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https://www.readbyqxmd.com/read/29233711/antitumor-effect-and-molecular-mechanism-of-antioxidant-polysaccharides-from-salvia-miltiorrhiza-bunge-in-human-colorectal-carcinoma-lovo-cells
#1
Xingyu Wang, Anning Gao, Yadong Jiao, Yan Zhao, Xingbin Yang
Salvia miltiorrhiza Bunge polysaccharides (SMP) was comprehensively investigated in this study. The polysaccharides were extracted by the method of water boiling and ethanol precipitation with high purity. The monosaccharide composition of SMP was characterized using the established HPLC-UV protocol with PMP precolumn derivatization, and the results indicate that the polysaccharides are mainly composed of d-galactose (Gal), d-glucose (Glc) and d-galacturonic acid (GalUA), and their mole percentages are 64.5%, 31...
December 9, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29229245/fabrication-of-fluorescent-labeled-ginseng-polysaccharide-nanoparticles-for-bioimaging-and-their-immunomodulatory-activity-on-macrophage-cell-lines
#2
Kazi Farida Akhter, Md Abdul Mumin, Edmund M K Lui, Paul A Charpentier
Polysaccharides are a major active component of American ginseng root showing various biological activities including anti-carcinogenic, anti-aging, immunostimulatory and antioxidant effects. Although their biological activity has been reported by several groups, no research has explored their cellular uptake and biodistribution, owing to the lack of suitable detection techniques in living cells. This work examines a novel, simple and efficient fluorescent labeling procedure of ginseng polysaccharides (PS), in order to examine their cellular distribution using confocal microscopy...
December 8, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29226489/inhibitory-effect-of-sulphated-polysaccharide-porphyran-isolated-from-porphyra-yezoensis-on-rankl-induced-differentiation-of-raw264-7-cells-into-osteoclasts
#3
Mikinori Ueno, Kichul Cho, Shogo Isaka, Tomoki Nishiguchi, Kenichi Yamaguchi, Daekyung Kim, Tatsuya Oda
Safe and efficient therapeutic agents for bone diseases are required in natural sources. We previously found that edible seaweed-derived polysaccharide porphyran exhibited anti-inflammatory effects through the down regulation of nuclear factor-κB. The aim of this study was to investigate the availability of porphyran as a therapeutic agent for bone diseases. The effects of porphyran on receptor activator of nuclear factor κB ligand (RANKL)-induced osteoclastogenesis in RAW264.7 cells were examined. Porphyran suppressed RANKL-induced osteoclast formation in a concentration-dependent manner (6...
December 11, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/29225755/evaluation-of-anti-bacterial-effects-of-nickel-nanoparticles-on-biofilm-production-by-staphylococcus-epidermidis
#4
Morteza Vahedi, Nima Hosseini-Jazani, Saber Yousefi, Maryam Ghahremani
Background and Objectives: Staphylococcus epidermidis produces biofilm by extracellular polysaccharides, causing bacterial adherence to different surfaces. Anti-microbial effects of nickel nanoparticles on some bacterial strains such as S. aureus and Escherichia coli have been determined in limited studies. The aim of the present study is to examine the inhibitory effect of nickel nanoparticles on biofilm formation using clinical isolates of S. epidermidis and its hemolytic effect on human red blood cells...
June 2017: Iranian Journal of Microbiology
https://www.readbyqxmd.com/read/29222018/physicochemical-properties-and-biological-activities-of-polysaccharides-from-lycium-barbarum-prepared-by-fractional-precipitation
#5
Guiping Gong, Tiantian Dang, Yangni Deng, Jianli Han, Sun Jing, Ying Zhang, Linjuan Huang, Zhongfu Wang
Traditional separation and purification process of Lycium barbarum polysaccharide (LBP) includes water extraction, alcohol precipitation, deproteinization and ion-exchange column chromatography, which is complicated and time-consuming. In our study, non-dialyzable LBP-I and dialyzable LBP-O were obtained from LBP by water extraction, alcohol precipitation and deproteinization. LBP-I was separated by fractional precipitation and three fractions (LBP-I-1, LBP-I-2 and LBP-I-3) were obtained. The three fractions were further purified by gel permeation chromatography to LBGP-I-1, LBGP-I-2 and LBGP-I-3 with yields of 0...
December 5, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29222012/macrophage-immunomodulatory-activity-of-the-polysaccharide-isolated-from-collybia-radicata-mushroom
#6
Yufeng Wang, Youqiu Tian, Jiangjuan Shao, Xu Shu, Jinxia Jia, Xiaojie Ren, Yue Guan
Polysaccharides from Collybia radicata mushroom (CRP) possess many functions, such as antiviral, anti-aging and hypolipidemic activities. However, little is known about their immunomodulatory activity. To address this issue, we did a thorough research into their immune effects on murine macrophages. The results showed that the 14942Da polysaccharide not only obviously improved the proliferation and phagocytosis of macrophages, but also induced the secretion of nitric oxide (NO), inducible nitric oxide synthase (iNOS) and cytokines, such as tumor necrosis factor-α (TNF-α) and interleukin factors (IL-1β, IL-6 and IL-10)...
December 6, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29221882/effective-inhibition-of-cbf-14-against-cryptococcus-neoformans-infection-in-mice-and-its-related-anti-inflammatory-activity
#7
Changzhong Yu, Shanshan Wei, Xiaorong Han, Hanhan Liu, Mengxiao Wang, Meiling Jiang, Min Guo, Jie Dou, Changlin Zhou, Lingman Ma
Cbf-14 (RLLRKFFRKLKKSV), a designed peptide derived from cathelicidin family AMP, has proven to be potent against drug-resistant bacteria. In the present study, we investigated the anti-cryptococcal activity of Cbf-14 in vitro and in a pulmonary infection mouse model. Sensitivity test indicated that Cbf-14 possessed effective antifungal activity against Cryptococcus neoformans with an MIC of 4-16 µg/ml, and killing experiments showed that fungicidal activity was achieved after only 4 h treatment with Cbf-14 at 4× MIC concentrations in vitro...
December 5, 2017: Fungal Genetics and Biology: FG & B
https://www.readbyqxmd.com/read/29219054/antioxidant-effects-of-polysaccharides-from-traditional-chinese-medicines
#8
Yang Liu, Gangliang Huang
Polysaccharides are a kind of biological macromolecules with immune regulation, anti-tumor, anti-radiation, anti-inflammation, anti-fatigue and anti-aging effects. These effects are related to their antioxidant properties. The action mechanisms of antioxidation and scavenging free radicals for polysaccharides were reviewed. The polysaccharides contain plant polysaccharides, animal polysaccharides and microbial polysaccharides. The recent research progresses and our work on antioxidant properties of polysaccharides and their derivatives were summarized...
December 7, 2017: Mini Reviews in Medicinal Chemistry
https://www.readbyqxmd.com/read/29217325/protocatechuic-acid-pca-induced-a-better-antiviral-effect-by-immune-enhancement-in-spf-chickens
#9
Yongxia Guo, Qiang Zhang, Zonghui Zuo, Jun Chu, Hongzhi Xiao, M Tariq Javed, Cheng He
Protocatechuic acid (PCA) is an antiviral agent against Avian Influenza virus (AIV) and Infectious Bursal Disease (IBD) virus but its antiviral mechanism is unknown. In this study, we evaluated the humoral and cellular responses to PCA in specific pathogen-free (SPF) chickens. One hundred forty 35-day-old SPF chickens were randomly divided into 7 groups. The birds were inoculated with the commercial, attenuated Newcastle Disease Virus (NDV) vaccine and then received orally with 10, 20 or 40 mg/kg body weight of PCA for 21 days...
December 4, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29216237/the-nutraceutical-benefits-of-subfractions-of-abelmoschus-esculentus-in-treating-type-2-diabetes-mellitus
#10
Chien-Ning Huang, Chau-Jong Wang, Chih-Li Lin, Hui-Ting Lin, Chiung-Huei Peng
Abelmoschus esculentus (AE), a commonly consumed vegetable, is well-known for its anti-hyperglycemic effects. However, few scientific reports have identified its targets because mucilage increases the difficulty of manipulation. We recently reported extraction steps to obtain subfractions of AE, which were found to attenuate the adverse effects of high glucose and fatty acid in vitro. In this study, we used modified extraction steps and type 2 diabetic rats to explore whether AE subfractions can improve the metabolic disturbances caused by insulin resistance in vivo...
2017: PloS One
https://www.readbyqxmd.com/read/29214724/cme-1-a-novel-polysaccharide-suppresses-inos-expression-in-lipopolysaccharide-stimulated-macrophages-through-ceramide-initiated-protein-phosphatase-2a-activation
#11
Joen-Rong Sheu, Zhih-Cherng Chen, Ming-Jen Hsu, Shwu-Huey Wang, Kuo-Wei Jung, Wei-Fan Wu, Szu-Han Pan, Ruei-Dun Teng, Chih-Hao Yang, Cheng-Ying Hsieh
CME-1, a novel water-soluble polysaccharide purified from Ophiocordyceps sinensis mycelia, has anti-oxidative, antithrombotic and antitumour properties. In this study, other major attributes of CME-1, namely anti-inflammatory and immunomodulatory properties, were investigated. Treating lipopolysaccharide (LPS)-stimulated RAW 264.7 cells with CME-1 concentration-dependently suppressed nitric oxide formation and inducible nitric oxide synthase (iNOS) expression. In the CME-1-treated RAW 264.7 cells, LPS-induced IκBα degradation and the phosphorylation of p65, Akt and mitogen-activated protein kinases (MAPKs), including extracellular signal-regulated kinase, c-Jun N-terminal kinase and p38, were reduced...
December 7, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/29210649/sargassum-fusiforme-polysaccharide-rejuvenates-the-small-intestine-in-mice-through-altering-its-physiology-and-gut-microbiota-composition
#12
P Chen, S Yang, C Hu, Z Zhao, J Liu, Y Cheng, S Wang, Q Chen, P Yu, X Zhang, M Wu
BACKGROUND AND OBJECTIVE: Aging can result in a progressive decline in cellular protection and physiological function. The physiological status and microbiota of the intestine are intensively linked to the aging process. Numerous studies have suggested that Sargassum fusiforme polysaccharides possess antioxidant and anti-aging activities. However, it remains unclear as to whether S. fusiforme polysaccharides can prevent the insult of oxidant and aging through modulating the physiological status and microbiota of the intestine...
December 4, 2017: Current Molecular Medicine
https://www.readbyqxmd.com/read/29198923/enteromorpha-and-polysaccharides-from-enteromorpha-ameliorate-loperamide-induced-constipation-in-mice
#13
Xinxiu Ren, Lei Liu, Yaser Gamallat, Bingqiang Zhang, Yi Xin
Slow-transit constipation(STC)is a disease characterized by functional gastrointestinal disorder. Common laxatives used in clinical practice against constipation such as Senna have side effects. Enteromorpha(EP)is a common marine alga, and the polysaccharide extracted from EP has been reported possessing anti-cancer and anti-inflammation effects. The aim of this study is to investigate the effects of EP and Polysaccharides from Enteromorpha (PEP) on loperamide induced constipated mice model and illustrating mechanism of action...
November 30, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29196051/lycium-barbarum-polysaccharides-improve-ccl4-induced-liver-fibrosis-inflammatory-response-and-tlrs-nf-kb-signaling-pathway-expression-in-wistar-rats
#14
Fang Gan, Qing Liu, Yunhuan Liu, Da Huang, Cuiling Pan, Suquan Song, Kehe Huang
Lycium barbarum polysaccharides (LBPs) have multiple biological and pharmacological functions, including antioxidant, anti-inflammatory and anticancer activities. This research was conducted to evaluate whether LBPs could alleviate carbon tetrachloride (CCl4)-induced liver fibrosis and the underlying signaling pathway mechanism. Fifty male wistar rats were randomly allocated to five groups (n=10): control, CCl4 and CCl4 with 400, 800 or 1600mg/kg LBPs, respectively. Each wistar rat from each group was used for blood and tissue collections at the end of experiment...
November 28, 2017: Life Sciences
https://www.readbyqxmd.com/read/29195989/the-influence-of-sweet-pepper-pectin-structural-characteristics-on-cytokine-secretion-by-thp-1-macrophages
#15
Georgia Erdmann do Nascimento, Sheila Maria Brochado Winnischofer, Marcel Ivan Ramirez, Marcello Iacomini, Lucimara Mach Côrtes Cordeiro
Pectins can modulate the biological responses interacting directly with immune cells. The observed responses can strongly be affected by polysaccharide structural features. We analyzed the intrinsic activation capacity of native and modified sweet pepper pectin on cytokine secretion by THP-1 macrophages as well as compare their effects in the presence of lipopolysaccharide. Modified pectin was obtained by partial acid hydrolysis which promoted the removal of side chains as well as the reduction of molecular weight and the degree of methyl esterification of native pectin...
December 2017: Food Research International
https://www.readbyqxmd.com/read/29194423/the-anti-inflammatory-effect-and-structure-of-epcp1-2-from-crypthecodinium-cohnii-via-modulation-of-tlr4-nf-%C3%AE%C2%BAb-pathways-in-lps-induced-raw-264-7-cells
#16
Xiaolei Ma, Baolong Xie, Jin Du, Aijun Zhang, Jianan Hao, Shuxun Wang, Jing Wang, Guorui Cao
Exopolysaccharide from Crypthecodinium cohnii (EPCP1-2) is a marine exopolysaccharide that evidences a variety of biological activities. We isolated a neutral polysaccharide from the fermentation liquid of Crypthecodinium cohnii (CP). In this study, a polysaccharide that is derived from Crypthecodinium cohnii were analyzed and its anti-inflammatory effect was evaluated on protein expression of toll-like receptor 4 and nuclear factor κB pathways in macrophages. The structural characteristics of EPCP1-2 were characterized by GC (gas chromatography) and GC-MS (gas Chromatography-Mass Spectrometer) analyses...
December 1, 2017: Marine Drugs
https://www.readbyqxmd.com/read/29192453/-removal-of-lipopolysaccharides-from-anti-complementary-crude-polysaccharides-of-houttuynia-herba
#17
Juan-Juan Zhang, Qing-Lin Zhang, Yan Lu, Dao-Feng Chen
An Affi-Prep Polymyxin column was combined with a Phenyl Sepharose column and a Sephacryl S-300 column, respectively, to remove the lipopolysaccharides(LPS) in the anti-complementary crude polysaccharides of Houttuynia Herba. The contents of LPS in the polysaccharides were determined by chromogenic tachypleus amebocyte lysate(TAL)method during the procedure of purifying. The anti-complementary activities of the polysaccharides were also compared before and after the removal of LPS. Less remanent LPS was detected after purified using Penyl Sepharose combined with polymyxin column, with the clearance rate of 42...
September 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/29191418/anti-allergic-effects-of-novel-sulfated-polysaccharide-sacran-on-mouse-model-of-2-4-dinitro-1-fluorobenzene-induced-atopic-dermatitis
#18
Keiichi Motoyama, Yuki Tanida, Aiko Sakai, Taishi Higashi, Shinichiro Kaneko, Hidetoshi Arima
In this study, in order to investigate the potential of the novel polysaccharide sacran from Aphanothece Sacrum for development of atopic dermatitis (AD), we evaluated the potential of pretreatment with topical sacran to prevent the development of hapten (dinitrofluorobenzene: DNFB)-induced AD-like disease in mice. In the AD model mice, sacran markedly ameliorated AD symptoms such as scratching behavior and edema in ear. In addition, sacran significantly increased water content of the stratum corneum which regulates the skin barrier function...
November 27, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29191406/enantioselective-separation-of-racemates-using-chiralpak-ig-amylose-based-chiral-stationary-phase-under-normal-standard-non-standard-and-reversed-phase-high-performance-liquid-chromatography
#19
Ashraf Ghanem, Chexu Wang
We have previously reported on the solvent versatility of immobilized amylose and cellulose-based chiral stationary phases in enantioselective liquid chromatographic separation of racemates. The studies were mainly focusing on the tris substituted 3,5-dimethylphenylcarbamate polysaccharide-based chiral stationary phases namely CHIRALPAK IA® [Amylose tris (3,5-dimethylphenylcarbamate)] or ADMPC and CHIRALPAK IB® [Cellulose tris (3,5-dimethylphenylcarbamate)] or CDMPC. Here we focus on the application of the recently introduced amylose tris (3-chloro-5-methylphenylcarbamate) or ACMPC and brand name CHIRALPAK IG® with a chlorine substituent replacing the methyl group in CHIRALPAK IA®...
November 24, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/29187714/-preparation-and-biological-characterization-of-limulus-factor-g-activating-substance-of-aspergillus-spp
#20
Yuichiro Kurone, Ken-Ichi Ishibashi, Daisuke Yamanaka, Noriko N Miura, Yoshiyuki Adachi, Naohito Ohno
Aspergillus is a medically important fungal genus that causes a life-threatening infection known as aspergillosis in immunocompromised patients. β-1,3-Glucan is detected in the plasma of patients with aspergillosis and appears to be useful for the diagnosis of aspergillosis. In this study, we cultured Aspergillus spp. in a chemically defined liquid medium and prepared an Aspergillus water-soluble fraction (ASWS) from the culture supernatants. ASWS was found to be primarily composed of polysaccharides and proteins...
2017: Medical Mycology Journal
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