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Immunostimulation

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https://www.readbyqxmd.com/read/27914463/study-of-immunomodulatory-effects-of-extracellular-hsp70-in-a-mouse-model-of-allergic-airway-inflammation
#1
M A Shevchenko, N I Troyanova, E A Servuli, E L Bolkhovitina, A S Fedorina, A M Sapozhnikov
Immunostimulatory properties of extracellular heat shock proteins 70 kDa (HSP70) became interesting for investigators a long time ago. However, in recent years a series of works showing a significant relation of the immunostimulating effects of recombinant HSP70 to contamination of the protein samples with bacterial endotoxins (lipopolysaccharide, LPS) has been published. The authors showed that intensive elimination of LPS from the protein samples resulted in inversion of immunostimulating effects of HSP70 to immunosuppressive activity of the protein...
November 2016: Biochemistry. Biokhimii︠a︡
https://www.readbyqxmd.com/read/27913418/a-novel-rhamnose-rich-hetero-exopolysaccharide-isolated-from-lactobacillus-paracasei-dg-activates-thp-1-human-monocytic-cells
#2
Silvia Balzaretti, Valentina Taverniti, Simone Guglielmetti, Walter Fiore, Mario Minuzzo, Hansel N Ngo, Judith B Ngere, Sohaib Sadiq, Paul N Humphreys, Andrew P Laws
: Lactobacillus paracasei DG is a bacterial strain with recognized probiotic properties and is used in commercial probiotic products. However, the mechanisms underlying its probiotic properties are mainly unknown. In this study, we tested the hypothesis that the capability of strain DG to interact with the host is, at least partly, associated with its ability to synthesize a surface-associated exopolysaccharide (EPS). Comparative genomics revealed the presence of putative EPS gene clusters in DG genome; accordingly, EPS was isolated from the surface of the bacterium...
December 2, 2016: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/27890799/enhancing-gilthead-seabream-immune-status-and-protection-against-bacterial-challenge-by-means-of-antigens-derived-from-vibrio-parahaemolyticus
#3
Martha Reyes-Becerril, Crystal Guluarte, Diana Ceballos-Francisco, Carlos Angulo, M Ángeles Esteban
In an attempt to control the proliferation of the pathogenic bacterium Vibrio parahaemolyticus in gilthead seabream (Sparus aurata), the immunostimulant effect of lysate and ToxA from this bacterium was evaluated. Fish were intraperitoneally injected twice (first injection, day 1 of the experiment; second injection, day 7) and sampled after one week (on days 8 and 15). Afterwards, all fish specimens were experimentally infected with V. parahaemolyticus and mortality was recovered for 1 week. Fish injected with lysate, ToxA and phosphate buffer saline (control) showed 100%, 50% and 0% survival, respectively, when challenged with the pathogen...
November 25, 2016: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/27888158/metabolomic-profile-of-children-with-recurrent-respiratory-infections
#4
Sara Bozzetto, Paola Pirillo, Silvia Carraro, Mariangela Berardi, Laura Cesca, Matteo Stocchero, Giuseppe Giordano, Stefania Zanconato, Eugenio Baraldi
Recurrent respiratory infections (RRI) represent a widespread condition which has a severe social and economic impact. Immunostimulants are used for their prevention. It is crucial to better characterize children with RRI to refine their diagnosis and identify effective personalized prevention strategies. Metabolomics is a high-dimensional biological method that can be used for hypothesis-free biomarker profiling, examining a large number of metabolites in a given sample using spectroscopic techniques. Multivariate statistical data analysis then enables us to infer which metabolic information is relevant to the biological characterization of a given physiological or pathological condition...
November 22, 2016: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
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
#5
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/27882178/modulatory-effects-of-feeding-pregnant-and-lactating-mice-rhodiola-kirilowii-extracts-on-the-immune-system-of-offspring
#6
Sławomir Lewicki, Barbara Joanna Bałan, Ewa Skopińska-Różewska, Robert Zdanowski, Marta Stelmasiak, Łukasz Szymański, Wanda Stankiewicz
Plants of Rhodiola genus are medicinal herbs that have a number of therapeutic properties, including anti-inflammatory and immunomodulatory activity. The present study aimed to determine whether the use Rhodiola kirilowii as an immunostimulant during pregnancy has an adverse effect on the development of the offspring immune system. Following mating, pregnant mice were placed in three groups that were fed during pregnancy and lactation with R. kirilowii aqueous extract (RKW; 20 mg/kg), R. kirilowii 50% hydro-alcoholic extract (RKW-A; 20 mg/kg) or water (control group), receiving water...
November 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/27876732/-the-use-of-propolis-based-therapy-in-otorhionolaryngology
#7
Sh M Omarov, G A Gadzhimirzaev, R G Gadzhimirzaeva, Z Sh Omarova
The authors analyze the literature publications and the results of their original investigations concerning the application of the propolis-based pharmacological products for the treatment of acute and chronic diseases of the upper respiratory tract and ears. The desirability of the more extensive application of the propolis-containing medicines in the routine otorhinolaryngological practice is emphasized bearing in mind their numerous biological effects including antibiotic, anti-inflammatory, immunostimulating, anti-oxidative, anesthetic, and cytostatic actions...
2016: Vestnik Otorinolaringologii
https://www.readbyqxmd.com/read/27864158/feeding-of-nano-scale-oats-%C3%AE-glucan-enhances-the-host-resistance-against-edwardsiella-tarda-and-protective-immune-modulation-in-zebrafish-larvae
#8
R M C Udayangani, S H S Dananjaya, Baldassare Fronte, Cheol-Hee Kim, Jehee Lee, Mahanama De Zoysa
In this study, we prepared and characterized the oats origin of nano scale β-glucan (NBG) and investigated the immunomodulatory properties in zebrafish larvae. Newly prepared NBG (average particle size of 465 nm) was fully soluble in water. Zebrafish larvae survival rate was increased against pathogenic bacteria Edwardsiella tarda, when NBG was added to the water (500 μg/mL) compared to NBG non-exposed controls. Moreover, quantitative real time PCR (qRT-PCR) results showed up-regulation of immune functional genes including TNF-α, IL-1β, β-defensin, lysozyme, IL 10, IL 12 and C-Rel indicating higher survival rate could be due to stronger immunomodulatory function of NBG (500 μg/mL)...
November 15, 2016: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/27856325/effects-of-dietary-administration-of-fenugreek-seeds-alone-or-in-combination-with-probiotics-on-growth-performance-parameters-humoral-immune-response-and-gene-expression-of-gilthead-seabream-sparus-aurata-l
#9
A Bahi, F A Guardiola, C Messina, A Mahdhi, R Cerezuela, A Santulli, A Bakhrouf, M A Esteban
The use of immunostimulants is considered a promising preventive practice that may help to maintain animal welfare and a healthy environment, while increasing production and providing higher profits. The purpose of this study was to evaluate the effects on gilthead seabream (Sparus aurata L.) of the dietary administration of fenugreek (Trigonella foenum graecum) seeds, alone or combined with one of the following probiotic strains: Bacillus licheniformis (TSB27), Lactobacillus plantarum or Bacillus subtilis (B46)...
November 14, 2016: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/27845210/changes-in-hemolymph-characteristics-of-ark-shell-scapharaca-broughtonii-dealt-with-vibrio-anguillarum-challenge-in-vivo-and-various-of-anticoagulants-in-vitro
#10
Liqing Zhou, Aiguo Yang, Zhihong Liu, Biao Wu, Xiujun Sun, Zhenming Lv, Ji-Teng Tian, Meirong Du
The ark shell Scapharca broughtonii is a commercially important shellfish in China. Alserver's solution (AS), modified Alserver's solution (MAS) and Heparin sodium solution (HSS) are common anticoagulants used for shellfish blood. To observe the immune response mediated by its hemocytes, we challenged in vivo S. broughtonii hemolymph with Vibrio anguillarum and dealt with the following three anticagulants in vitro: Alserver's solution (AS), modified Alserver's solution (MAS) and Heparin sodium solution (HSS)...
November 11, 2016: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/27843625/safety-and-immunogenicity-of-the-prame-cancer-immunotherapeutic-in-metastatic-melanoma-results-of-a-phase-i-dose-escalation-study
#11
R Gutzmer, L Rivoltini, E Levchenko, A Testori, J Utikal, P A Ascierto, L Demidov, J J Grob, R Ridolfi, D Schadendorf, P Queirolo, A Santoro, C Loquai, B Dreno, A Hauschild, E Schultz, T P Lesimple, N Vanhoutte, B Salaun, M Gillet, S Jarnjak, P M De Sousa Alves, J Louahed, V G Brichard, F F Lehmann
PURPOSE: The PRAME tumour antigen is expressed in several tumour types but in few normal adult tissues. A dose-escalation phase I/II study (NCT01149343) assessed the safety, immunogenicity and clinical activity of the PRAME immunotherapeutic (recombinant PRAME protein (recPRAME) with the AS15 immunostimulant) in patients with advanced melanoma. Here, we report the phase I dose-escalation study segment. PATIENTS AND METHODS: Patients with stage IV PRAME-positive melanoma were enrolled to 3 consecutive cohorts to receive up to 24 intramuscular injections of the PRAME immunotherapeutic...
2016: ESMO Open
https://www.readbyqxmd.com/read/27822251/immunostimulatory-effect-of-the-aqueous-leaf-extract-of-phyllanthus-niruri-on-the-specific-and-nonspecific-immune-responses-of-oreochromis-mossambicus-peters
#12
M Muthulakshmi, P A Subramani, R D Michael
Plant derived immunostimulants are a promising alternative to chemotherapeutics and also perhaps vaccines. In the present study, we examined the immunostimulating properties of aqueous leaf extract of Phyllanthus niruri, an Indian traditional medicinal herb, on neutrophil activation and antibody response of Oreochromis mossambicus (Peters). Serial ten-fold diluted doses of P. niruri ranging from 0.002 mg to 20 mg were administered to two groups of O. mossambicus (n=8). One group of fishes was administered with sheep red blood cells and the primary and secondary antibody responses were estimated using direct haemagglutination assay...
2016: Iranian journal of veterinary research
https://www.readbyqxmd.com/read/27818338/antimicrobial-and-host-cell-directed-activities-of-gly-ser-rich-peptides-from-salmonid-cathelicidins
#13
Francesca D'Este, Monica Benincasa, Giuseppe Cannone, Michela Furlan, Michele Scarsini, Donatella Volpatti, Renato Gennaro, Alessandro Tossi, Barbara Skerlavaj, Marco Scocchi
Cathelicidins, a major family of vertebrate antimicrobial peptides (AMPs), have a recognized role in the first line of defense against infections. They have been identified in several salmonid species, where the putative mature peptides are unusually long and rich in serine and glycine residues, often arranged in short multiple repeats (RLGGGS/RPGGGS) intercalated by hydrophobic motifs. Fragments of 24-40 residues, spanning specific motifs and conserved sequences in grayling or brown, rainbow and brook trout, were chemically synthesized and examined for antimicrobial activity against relevant Gram-positive and Gram-negative salmonid pathogens, as well as laboratory reference strains...
December 2016: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/27814617/tumor-abolition-and-antitumor-immunostimulation-by-physico-chemical-tumor%C3%A2-ablation
#14
Yona Keisari
Tumor ablation by thermal, chemical and radiological sources has received substantial attention for the treatment of many localized malignancies. The primary goal of most ablation procedures is to eradicate all viable malignant cells within a designated target volume through the application of energy or chemicals. Methods such as radiotherapy, chemical and biological ablation, photodynamic therapy, cryoablation, high-temperature ablation (radiofrequency, microwave, laser, and ultrasound), and electric-based ablation have been developed for focal malignancies...
January 1, 2017: Frontiers in Bioscience (Landmark Edition)
https://www.readbyqxmd.com/read/27804907/effect-of-dietary-supplementation-of-grape-seed-extract-on-the-growth-performance-lipid-profile-antioxidant-status-and-immune-response-of-broiler-chickens
#15
M H Farahat, F M Abdallah, H A Ali, A Hernandez-Santana
Grape seed extracts (GSE) contain several beneficial bioactive constituents; therefore, can be utilized as a potential feed additive in broiler chickens. An experiment was conducted to investigate the effect of supplementation of broiler chicken diets with GSE as a natural antioxidant at levels of 125, 250, 500, 1000 and 2000 ppm on the growth performance, serum lipid profile, liver glutathione-reduced, thigh muscle malondialdehyde and humoral immune response against Newcastle disease virus vaccines. This experiment was performed during the life-span of chickens from 0 to 42 days of age...
November 2, 2016: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/27794459/plant-polysaccharides-used-as-immunostimulants-enhance-innate-immune-response-and-disease-resistance-against-aeromonas-hydrophila-infection-in-fish
#16
Erlong Wang, Xia Chen, Kaiyu Wang, Jun Wang, Defang Chen, Yi Geng, Weimin Lai, Xianchao Wei
Plant polysaccharides (PPS) are an important medicinal plant product, and play a major role in preventing and controlling infectious microbes in aquaculture. The present study investigated the effect of three PPS; Ficus carica polysaccharides (FCPS), Radix isatidis polysaccharides (RIPS), and Schisandra chinensis polysaccharides (SCPS), used as feed additives, on innate immune responses and disease resistance against Aeromonas hydrophila in crucian carp. Results show that crucian carp fed with these PPS showed significant (p < 0...
December 2016: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/27789943/rna-interference-based-nanosystems-for-inflammatory-bowel-disease-therapy
#17
REVIEW
Jian Guo, Xiaojing Jiang, Shuangying Gui
Inflammatory bowel disease (IBD), which includes ulcerative colitis and Crohn's disease, is a chronic, recrudescent disease that invades the gastrointestinal tract, and it requires surgery or lifelong medicinal therapy. The conventional medicinal therapies for IBD, such as anti-inflammatories, glucocorticoids, and immunosuppressants, are limited because of their systemic adverse effects and toxicity during long-term treatment. RNA interference (RNAi) precisely regulates susceptibility genes to decrease the expression of proinflammatory cytokines related to IBD, which effectively alleviates IBD progression and promotes intestinal mucosa recovery...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/27776125/immunotherapeutic-potential-of-eugenol-emulsion-in-experimental-visceral-leishmaniasis
#18
Mohammad Islamuddin, Garima Chouhan, Muzamil Yaqub Want, Hani A Ozbak, Hassan A Hemeg, Farhat Afrin
BACKGROUND: The therapy of visceral leishmaniasis (VL) is limited by resistance, toxicity and decreased bioavailability of the existing drugs coupled with dramatic increase in HIV-co-infection, non-availability of vaccines and down regulation of cell-mediated immunity (CMI). Thus, we envisaged combating the problem with plant-derived antileishmanial drug that could concomitantly mitigate the immune suppression of the infected hosts. Several plant-derived compounds have been found to exert leishmanicidal activity via immunomodulation...
October 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/27775618/effects-of-saponins-on-lipid-metabolism-a-review-of-potential-health-benefits-in-the-treatment-of-obesity
#19
Mariangela Marrelli, Filomena Conforti, Fabrizio Araniti, Giancarlo A Statti
Obesity is one of the greatest public health problems. This complex condition has reached epidemic proportions in many parts of the world, and it constitutes a risk factor for several chronic disorders, such as hypertension, cardiovascular diseases and type 2 diabetes. In the last few decades, several studies dealt with the potential effects of natural products as new safe and effective tools for body weight control. Saponins are naturally-occurring surface-active glycosides, mainly produced by plants, whose structure consists of a sugar moiety linked to a hydrophobic aglycone (a steroid or a triterpene)...
October 20, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27773783/chitosan-oligosaccharide-biological-activities-and-potential-therapeutic-applications
#20
REVIEW
Chatchai Muanprasat, Varanuj Chatsudthipong
Chitosan oligosaccharide (COS) is an oligomer of β-(1➔4)-linked d-glucosamine. COS can be prepared from the deacetylation and hydrolysis of chitin, which is commonly found in the exoskeletons of arthropods and insects and the cell walls of fungi. COS is water soluble, non-cytotoxic, readily absorbed through the intestine and mainly excreted in the urine. Of particular importance, COS and its derivatives have been demonstrated to possess several biological activities including anti-inflammation, immunostimulation, anti-tumor, anti-obesity, anti-hypertension, anti-Alzheimer's disease, tissue regeneration promotion, drug and DNA delivery enhancement, anti-microbial, anti-oxidation and calcium-absorption enhancement...
October 20, 2016: Pharmacology & Therapeutics
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