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https://www.readbyqxmd.com/read/27932257/antioxidant-antibacterial-and-anti-aging-activities-of-intracellular-zinc-polysaccharides-from-grifola-frondosa-sh-05
#1
Chen Zhang, Zheng Gao, Chunlong Hu, Jianjun Zhang, Xinyi Sun, Chengbo Rong, Le Jia
In present work, the strain of Grifola frondosa SH-05 was used as a vector of zinc biotransformation to produce the IZPS. The bioactivities including antioxidant and antibacterial activities in vitro and anti-aging properties in vivo of IZPS were investigated comparing with the IPS. The results which were in consistent with the results of histopathology assay demonstrated that the IZPS had superior antioxidant and anti-aging activities by scavenging the hydroxyl and DPPH radicals, increasing enzyme activities, decreasing the MDA contents and ameliorating the anile condition of mice...
December 5, 2016: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/27931102/mannose-receptor-mediates-the-immune-response-to-ganoderma-atrum-polysaccharides-in-macrophages
#2
Wen-Juan Li, Xiao-Fang Tang, Xiao-Xue Shuai, Cheng-Jia Jiang, Xiang Liu, Le-Feng Wang, Yu-Fei Yao, Shaoping Nie, Ming-Yong Xie
The ability of mannose receptor (MR) to recognize the carbohydrate structures is well established. Here we reported that MR was crucial for the immune response to Ganoderma atrum polysaccharides (PSG-1), as evidenced by elevation of MR in association with increase of phagocytosis and concentrations of IL-1ß and TNF-α in normal macrophages. Elevation of MR triggered by PSG-1 also led to control lipopolysaccharide (LPS)-triggered inflammatory response via the increase of IL-10 and inhibition of phagocytosis and IL-1ß...
December 8, 2016: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/27930983/sargassum-fusiforme-polysaccharides-inhibit-vegf-a-related-angiogenesis-and-proliferation-of-lung-cancer-in-vitro-and-in-vivo
#3
Huiling Chen, Ling Zhang, Xiange Long, Peifei Li, Shengcan Chen, Wei Kuang, Junming Guo
Sargassum fusiforme (Harv.) is a brown alga belonging to the Sargasaceae family. The Sargassum fusiforme polysaccharides (SFPS) have demonstrated good anti-tumor and immunomodulatory activity. However, the underlying mechanisms of its anti-tumorigenesis, especially the anti-angiogenic activity is yet to be established. In the present study, we attempted to determine the effects of SFPS on the human lung adenocarcinoma SPC-A-1 cells and its xenograft model. The results showed that SFPS provides a concentration-dependent inhibition of SPC-A-1 cell proliferation in in vitro and the tumor growth in in vivo studies...
December 5, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27913955/polysaccharides-from-arnebia-euchroma-ameliorated-endotoxic-fever-and-acute-lung-injury-in-rats-through-inhibiting-complement-system
#4
Ying-Ye Ou, Yun Jiang, Hong Li, Yun-Yi Zhang, Yan Lu, Dao-Feng Chen
Arnebiaeuchroma (Royle) Johnst (Ruanzicao) is a traditional Chinese herbal medicine (TCM). It is extensively used in China and other countries for treatment of inflammatory diseases. It is known that hyper-activated complement system involves in the fever and acute lung injury (ALI) in rats. In our preliminary studies, anti-complementary activity of crude Arnebiaeuchroma polysaccharides (CAEP) had been demonstrated in vitro. This study aimed to investigate the role and mechanism of crude Arnebiaeuchroma polysaccharides (CAEP) using two animal models, which relate with inappropriate activation of complement system...
December 3, 2016: Inflammation
https://www.readbyqxmd.com/read/27908718/inhibitory-effect-of-sophora-subprosrate-polysaccharide-on-mitochondria-oxidative-stress-induced-by-pcv-2-infection-in-raw264-7-cells
#5
Zi-Jie Su, Jian Yang, Wen-Juan Luo, Ying-Yi Wei, Xue-Hong Shuai, Ting-Jun Hu
In the present study, the inhibitory effect of Sophora subprosrate polysaccharide (SSP) on PCV-2-induced mitochondrial respiratory burst in RAW264.7 cells was first investigated. The findings suggested that SOD activity and the anti-superoxide anion radical activity of the RAW264.7 cells were significantly decreased after PCV-2 infection, and MnSOD mRNA levels were significantly decreased, while NOX2 mRNA levels and protein expression were increased. Meanwhile, the O2(•-) levels and mitochondrial membrane potentials were significantly increased...
November 28, 2016: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/27902477/astragalus-polysaccharide-restores-autophagic-flux-and-improves-cardiomyocyte-function-in-doxorubicin-induced-cardiotoxicity
#6
Yuan Cao, Tao Shen, Xiuqing Huang, Yajun Lin, Beidong Chen, Jing Pang, Guoping Li, Que Wang, Sylvia Zohrabian, Chao Duan, Yang Ruan, Yong Man, Shu Wang, Jian Li
Doxorubicin (adriamycin), an anthracycline antibiotic, is commonly used to treat many types of solid and hematological malignancies. Unfortunately, clinical usage of doxorubicin is limited due to the associated acute and chronic cardiotoxicity. Previous studies demonstrated that Astragalus polysaccharide (APS), the extracts of Astragalus membranaceus, had strong anti-tumor activities and anti-inflammatory effects. However, whether APS could mitigate chemotherapy-induced cardiotoxicity is unclear thus far. We used a doxorubicin-induced neonatal rat cardiomyocyte injury model and a mouse heart failure model to explore the function of APS...
November 25, 2016: Oncotarget
https://www.readbyqxmd.com/read/27898700/sbg1-is-a-novel-regulator-for-the-localization-of-the-%C3%AE-glucan-synthase-bgs1-in-fission-yeast
#7
Reshma Davidson, Josef A Pontasch, Jian-Qiu Wu
Glucan synthases synthesize glucans, complex polysaccharides that are the major components in fungal cell walls and division septa. Studying regulation of glucan synthases is important as they are essential for fungal cell survival and thus popular targets for anti-fungal drugs. Linear 1,3-β-glucan is the main component of primary septum and is synthesized by the conserved β-glucan synthase Bgs1 in fission yeast cytokinesis. It is known that Rho1 GTPase regulates Bgs1 catalytic activity and the F-BAR protein Cdc15 plays a role in Bgs1 delivery to the plasma membrane...
2016: PloS One
https://www.readbyqxmd.com/read/27895641/pneumococcal-polysaccharide-vaccination-elicits-igg-anti-a-b-blood-group-antibodies-in-healthy-individuals-and-patients-with-type-i-diabetes-mellitus
#8
Wendelin Wolfram, Kai M T Sauerwein, Christoph J Binder, Nicole Eibl-Musil, Hermann M Wolf, Michael B Fischer
HYPOTHESIS: Blood group antibodies are natural antibodies that develop early in life in response to cross-reactive environmental antigens in the absence of antigen encounter. Even later in life structural similarities in saccharide composition between environmental antigens such as bacterial polysaccharides and blood group A/B antigens could lead to changes in serum levels, IgM/IgG isotype, and affinity maturation of blood group anti-A/B antibodies. We addressed the question whether immunization with pneumococcal polysaccharide (PnP) vaccine Pneumo 23 Vaccine "Pasteur Merieux" (Pn23) could have such an effect in patients with type I diabetes mellitus (DM I), an autoimmune disease where an aberrant immune response to microbial antigens likely plays a role...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27892654/injectable-polysaccharide-hydrogels-as-biocompatible-platforms-for-localized-and-sustained-delivery-of-antibiotics-for-preventing-local-infections
#9
Ziyi Li, Chaoliang He, Baoming Yuan, Xiaoming Dong, Xuesi Chen
Biocompatible and antibacterial hydrogels have received increasing attention for preventing local bacterial infections. In this study, a type of polysaccharide hydrogels is prepared via the Schiff-based reaction at physiological conditions. The gelation time and mechanical property of the hydrogels are found to be dependent on the polysaccharide concentration and the polysaccharide weight ratio. 3-(4,5-Dimethyl-thiazol-2-yl)-2,5-diphenyl tetrazolium bromide assay and live/dead assay indicate that the hydrogels display nontoxicity in vitro...
November 28, 2016: Macromolecular Bioscience
https://www.readbyqxmd.com/read/27885841/the-utility-of-saliva-for-the-assessment-of-anti-pneumococcal-antibodies-investigation-of-saliva-as-a-marker-of-antibody-status-in-serum
#10
Jennifer L J Heaney, Anna C Phillips, Douglas Carroll, Mark T Drayson
CONTEXT: Salivary antibodies may act as non-invasive marker of systemic immunity enabling assessment of vaccination and protection against bacterial infections. OBJECTIVE: To assess if levels of anti-pneumococcal antibodies in saliva reflect concentrations in serum and determine whether saliva can accurately identify protective concentrations in serum. METHODS: IgG, IgA and IgM antibody levels in paired saliva and serum samples were measured against 12 pneumococcal polysaccharide antigens in 72 healthy adults...
November 25, 2016: Biomarkers: Biochemical Indicators of Exposure, Response, and Susceptibility to Chemicals
https://www.readbyqxmd.com/read/27884671/anti-tumor-and-immunomodulatory-activities-induced-by-an-alkali-extracted-polysaccharide-bcap-1-from-bupleurum-chinense-via-nf-%C3%AE%C2%BAb-signaling-pathway
#11
Xiangfu Song, Ting Ren, Zhou Zheng, Tiancheng Lu, Zhicheng Wang, Fengguo Du, Haibin Tong
Bupleurum chinense is a well-known traditional Chinese medicine. Polysaccharides extracted from medical plants possess multiple healthy benefits. In the present study, an alkali-extracted polysaccharide (BCAP-1) was isolated from Bupleurum chinense, and evaluated its physicochemical features, anti-tumor activities and immunomodulatory effects. BCAP-1 was obtained by alkali-extraction, ethanol precipitation, and fractionation by DEAE-cellulose and Sepharose CL-6B columns. BCAP-1 markedly inhibited Sarcoma 180tumor growth in tumor-bearing mice, and increased the secretion of TNF-α in serum...
November 22, 2016: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/27871790/antioxidant-and-anti-hyperlipidemic-effects-of-mycelia-zinc-polysaccharides-by-pleurotus-eryngii-var-tuoliensis
#12
Nuo Xu, Zhenzhen Ren, Jianjun Zhang, Xinling Song, Zheng Gao, Huijuan Jing, Shangshang Li, Shouxian Wang, Le Jia
The aims of this work were designed to investigate the hepatoprotective and antioxidant effects of acidic- and alkali-extractable mycelia zinc polysaccharides (AcMZPS, AlMZPS) from Pleurotus eryngii var. tuoliensis on high-fat-high-cholesterol emulsion-induced hyperlipidemic mice. The in vivo experiments demonstrated that both AcMZPS and AlMZPS had potential hepatoprotective effects by significantly decreasing the levels of LDL-C, VLDL-C, TC, TG, ALT, AST, ALP, MDA and LPO, and remarkably increasing the HDL-C, SOD, GSH-Px, and CAT in serum lipid/liver homogenate, respectively...
November 18, 2016: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/27866926/evaluation-of-humoral-immunity-profiles-to-identify-heart-recipients-at-risk-for-development-of-severe-infections-a-multicenter-prospective-study
#13
Elizabeth Sarmiento, Maria Jaramillo, Leticia Calahorra, Juan Fernandez-Yañez, Miguel Gomez-Sanchez, Maria G Crespo-Leiro, Maria Paniagua, Luis Almenar, Monica Cebrian, Gregorio Rabago, Beltran Levy, Javier Segovia, Manuel Gomez-Bueno, Javier Lopez, Sonia Mirabet, Joaquin Navarro, Juan Jose Rodriguez-Molina, Eduardo Fernandez-Cruz, Javier Carbone
BACKGROUND: New biomarkers are necessary to improve detection of the risk of infection in heart transplantation. We performed a multicenter study to evaluate humoral immunity profiles that could better enable us to identify heart recipients at risk of severe infections. METHODS: We prospectively analyzed 170 adult heart recipients at 8 centers in Spain. Study points were before transplantation and 7 and 30 days after transplantation. Immune parameters included IgG, IgM, IgA and complement factors C3 and C4, and titers of specific antibody to pneumococcal polysaccharide antigens (anti-PPS) and to cytomegalovirus (CMV)...
October 17, 2016: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/27865960/identification-of-inonotus-obliquus-polysaccharide-with-broad-spectrum-antiviral-activity-against-multi-feline-viruses
#14
Jin Tian, Xiaoliang Hu, Dafei Liu, Hongxia Wu, Liandong Qu
Inonotus obliquus polysaccharides (IOPs) are a potential drug for the prevention and treatment of cancer, cardiopathy, diabetes, AIDs, pancreatitis and other diseases. In this study, we found that IOP can act as a broad-spectrum antiviral drug against feline viruses in the in vitro experiment. Using cell models of feline calicivirus (FCV), we demonstrated that IOP treatment was capable of exhibiting anti-FCV strain F9 activity in cell-based assays and also showed low cytotoxicity. Investigation of the mechanism of action of the compound revealed that IOP treatment induces its inhibitory actions directly on virus particles through blocking viral binding/absorpting...
November 16, 2016: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/27865796/bletilla-striata-medicinal-uses-phytochemistry-and-pharmacological-activities
#15
REVIEW
Xirui He, Jiacheng Fang, Xiaoxiao Wang, Zefeng Zhao, Yu Chang, Hao Guo, Linhong Huang
ETHNOPHARMACOLOGICAL RELEVANCE: Bletilla striata (Thunb.) Reichb. f. (Orchidaceae), also known as Hyacinth Orchid and Baiji (Simplified Chinese: ), not only has been widely used for the treatment of hematemesis, hemoptysis, and traumatic bleeding due to the efficacy of arresting bleeding with astringent action, but also has been applied topically to overcome ulcers, sores, swellings, and chapped skin due to the efficacy of dispersing swelling and promoting tissue regeneration. Additional medical applications include the treatment of tuberculosis, malignant ulcers, hemorrhoids, anthrax, eye diseases, and silicosis...
November 16, 2016: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/27863138/prevention-of-sinonasal-inflammation-by-a-synthetic-glycosaminoglycan
#16
Abigail Pulsipher, Xuan Qin, Andrew J Thomas, Glenn D Prestwich, Siam Oottamasathien, Jeremiah A Alt
BACKGROUND: Glycosaminoglycans (GAGs) are polysaccharides that are distributed on respiratory epithelial cells, endothelial cells, and submucosal glands. Uniquely positioned, certain GAGs exhibit anti-inflammatory properties in respiratory diseases and serve important roles in repairing mucosal surfaces and modulating mucociliary clearance. We hypothesized that topical administration of a synthetic GAG (GM-0111) would prevent sinonasal inflammation in a mouse model of rhinosinusitis (RS)...
November 11, 2016: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/27846277/pneumococcal-conjugated-vaccine-reduces-the-high-mortality-for-community-acquired-pneumonia-in-the-elderly-an-italian-regional-experience
#17
Vincenzo Baldo, Silvia Cocchio, Tolinda Gallo, Patrizia Furlan, Pierantonio Romor, Chiara Bertoncello, Alessandra Buja, Tatjana Baldovin
BACKGROUND: Community-acquired pneumonia (CAP) is an important cause of illness and death worldwide, particularly among the elderly. Previous studies on the factors associated with mortality in patients hospitalized for CAP revealed a direct association between the type of microorganism involved, the characteristics of the patient and mortality. Vaccination status against pneumococcal disease was not considered. We conducted a retrospective analysis on the mortality rates after a first hospitalization for CAP in north-east Italy with a view to examining especially the role of anti-pneumococcal vaccination as a factor associated with pneumonia-related mortality at one year...
2016: PloS One
https://www.readbyqxmd.com/read/27842819/bupleurum-chinense-polysaccharide-inhibit-adhesion-of-human-melanoma-cells-via-blocking-%C3%AE-1-integrin-function
#18
Haibin Tong, Guiquan Jiang, Dake Qi, Jingfeng Bi, Dan Tian, Xingang Guan, Sheng Zheng, Xin Sun
Adhesive interaction contributes toward tumor metastasis and the transmembrane glycoprotein receptor, integrin has been recognized to mediate the adhesion to extracellular matrix thus upregulating tumor metastasis. In the current study, we evaluated the anti-adhesive mechanisms of a water-soluble polysaccharide (BCP) extracted from Bupleurum chinense. BCP inhibited integrin-mediated adhesion of human melanoma A375 cells to fibronectin but had no effects on nonspecific adhesion to poly-l-lysine. BCP also reduced β1 integrin ligand affinity for GST-FNIII9-10 proteins...
January 20, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/27830033/anti-inflammatory-effects-of-boletus-edulis-polysaccharide-on-asthma-pathology
#19
Songquan Wu, Guangli Wang, Ruhui Yang, Yubao Cui
Asthma is a chronic airway disease common around the world. The burden of this disease could be reduced with new and effective treatments. Here, the efficacy of a polysaccharide extract from the Boletus edulis (BEP) mushroom, which has demonstrated anti-inflammatory properties, was tested in a mouse model of asthma. Five groups of BaLB/C mice were developed; one group served as a control and did not have asthma induction. The other four groups of mice were sensitized by ovalbumin challenge. FinePointe™ RC animal airway resistance and pulmonary compliance was used to assess airway function in asthma models...
2016: American Journal of Translational Research
https://www.readbyqxmd.com/read/27818294/molecular-mechanism-of-antrodia-cinnamomea-sulfated-polysaccharide-on-the-suppression-of-lung-cancer-cell-growth-and-migration-via-induction-of-transforming-growth-factor-%C3%AE-receptor-degradation
#20
Mei-Kuang Lu, Tung-Yi Lin, Chi-Hsein Chao, Chun-Hao Hu, Hsien-Yeh Hsu
A sulfated polysaccharide of edible mushroom Antrodia cinnamomea (SPS) has been identified as a novel immunomodulatory agent. We examined the anti-cancer effects of SPS by conducting a series of in vitro studies. We found that SPS inhibits the growth of A549 and LLC1 lung cancer cells via the induction of cell cycle arrest and activation of caspase 3 and PARP. By contrast, we found that a non-sulfated polysaccharide of A. cinnamomea (NSPS) does not inhibit lung cancer cell viability. Moreover, NSPS does not induce changes in cell cycle distribution or activate apoptosis-related molecules in both A549 and LLC1 cells...
November 3, 2016: International Journal of Biological Macromolecules
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