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Immunostimulant

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https://www.readbyqxmd.com/read/29229441/does-dietary-insect-meal-affect-the-fish-immune-system-the-case-of-mealworm-tenebrio-molitor-on-european-sea-bass-dicentrarchus-labrax
#1
M A Henry, L Gasco, S Chatzifotis, G Piccolo
Feeding small European sea bass, Dicentrarchus labrax, for 6 weeks with Tenebrio molitor larval meal showed significant anti-inflammatory responses (ceruloplasmin, myeloperoxidase and nitric oxide). Serum bacteriolytic activity against a Gram negative bacterium was not significantly affected by dietary Tenebrio, while both lysozyme antibacterial activity and serum trypsin inhibition usually linked to the anti-parasite activity of the fish, were significantly enhanced. The latter may be due to the similarities in the composition of the exoskeleton of parasites and insects that may therefore act as an immunostimulant potentially increasing the anti-parasitic activity...
December 8, 2017: Developmental and Comparative Immunology
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/29228683/lenalidomide-overcomes-the-immunosuppression-of-regulatory-cd8-cd28-t-cells
#3
Brigitte Neuber, Jingying Dai, Wjahat A Waraich, Mohamed H S Awwad, Melanie Engelhardt, Michael Schmitt, Sergej Medenhoff, Mathias Witzens-Harig, Anthony D Ho, Hartmut Goldschmidt, Michael Hundemer
Although lenalidomide and pomalidomide are well-established treatment options in patients with multiple myeloma, their immune-modulating effects are not fully understood. While CD8+CD28- regulatory T-cells in patients with hematologic disorders display a known immune-escape mechanism, we show that lenalidomide can overcome the immunosuppressive impact of CD8+CD28- T-cells. We analyzed in vitro the antigen-specific T-cell responses of healthy donors and patients with multiple myeloma with or without the addition of autologous CD8+CD28- T-cells in the absence and presence of lenalidomide...
November 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29214185/administration-of-rhodiola-kirilowii-extracts-during-mouse-pregnancy-and-lactation-stimulates-innate-but-not-adaptive-immunity-of-the-offspring
#4
Sławomir Lewicki, Ewa Skopińska-Różewska, Aleksandra Brewczyńska, Robert Zdanowski
The use of antibiotics during pregnancy and lactation is associated with an increased risk of developmental disorders. One of the natural medicinal plants-Rhodiola kirilowii, widely used as an immunostimulant in adults-might be a good alternative to antibiotic treatment. The aim of present study was to assess whether daily oral administration of 20 mg/kg of Rhodiola kirilowii aqueous (RKW) or 50% hydroalcoholic (RKW-A) extracts affected hematological and immunological parameters of 6-week-old mouse progeny...
2017: Journal of Immunology Research
https://www.readbyqxmd.com/read/29212956/icam1-neutrophils-promote-chronic-inflammation-via-asprv1-in-b-cell-dependent-autoimmune-encephalomyelitis
#5
Ryder F Whittaker Hawkins, Alexandre Patenaude, Aline Dumas, Rajiv Jain, Yodit Tesfagiorgis, Steven Kerfoot, Takeshi Matsui, Matthias Gunzer, Patrice E Poubelle, Catherine Larochelle, Martin Pelletier, Luc Vallières
Neutrophils contribute to demyelinating autoimmune diseases, yet their phenotype and functions have been elusive to date. Here, we demonstrate that ICAM1 surface expression distinguishes extra- from intravascular neutrophils in the mouse CNS during experimental autoimmune encephalomyelitis (EAE). Transcriptomic analysis of these 2 subpopulations indicated that neutrophils, once extravasated, acquire macrophage-like properties, including the potential for immunostimulation and MHC class II-mediated antigen presentation...
December 7, 2017: JCI Insight
https://www.readbyqxmd.com/read/29208275/synergetically-understanding-the-interaction-between-nano-microspheres-and-peptide-for-controllable-drug-loading-via-experimental-and-theoretical-approaches
#6
Chunbao Du, Xiaoling Hu, Yuan Cheng, Junfeng Gao, Yong-Wei Zhang, Kehe Su, Zhijian Li, Nan Zhang, Ninghui Chang, Kaiyang Zeng
In this paper we systematically investigate the loading capacity of raspberry-like nano/microspheres with highly cross-linked structure for the peptide, immunostimulating hexapeptide from human (IHH), by integrating both experimental and simulation efforts. The experimental results indicate that the loading capacities of raspberry-like nano/microspheres with different functionalized chains vary drastically. To provide theoretical insights into the observed phenomenon, the typical raspberry-like nano/microspheres were simplified as effective functionalized groups, thereby the interactions between them and IHH were accurately calculated by ab initio method...
February 1, 2018: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/29201374/liposomal-adjuvant-development-for-leishmaniasis-vaccines
#7
REVIEW
Anis Askarizadeh, Mahmoud Reza Jaafari, Ali Khamesipour, Ali Badiee
Leishmaniasis is a parasitic disease that ranges in severity from skin lesions to fatality. Since long-lasting protection is induced upon recovery from cutaneous leishmaniasis, development of an effective vaccine is promising. However, there is no vaccine for use in humans yet. It seems limited efficacy in leishmaniasis vaccines is due to lack of an appropriate adjuvant or delivery system. Hence, the use of particulate adjuvants such as liposomes for effective delivery to the antigen presenting cells (APCs) is a valuable strategy to enhance leishmaniasis vaccine efficacy...
August 2017: Therapeutic Advances in Vaccines
https://www.readbyqxmd.com/read/29188771/hplc-and-gc-ms-identification-and-quantification-of-strychnine-and-brucine-in-strychnos-nux-vomica-leaves
#8
P N Prasad Maddisetty, V A Doss, Mohanasundaram S, Srinivasarao V, Mohanbabu T
In this study, we have aimed to analyze the phytochemical composition of this plant and the concentration of strychnine and brucine. The identification of bioactive compounds was done by GC-MS with NIST Library. Strychnine and Brucine were quantified using HPLC. Twenty one medicinal bio active compounds were identified from the Strychnos nux-vomica leaf ethanolic extract. Strychnine is showing 28.43% purity and brucine was not detected in GCMS analysis. Quantified the concentration of strychnine (0.6 mg in 500mg of extract) and brucine (1...
November 2017: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29182557/effect-of-dietary-acidolysis-oxidized-konjac-glucomannan-supplementation-on-serum-immune-parameters-and-intestinal-immune-related-gene-expression-of-schizothorax-prenanti
#9
Mingrui Chen, Shuyao Wang, Xue Liang, Donghui Ma, Li He, Yaowen Liu
The present study was conducted to investigate the effects of dietary acidolysis-oxidized konjac glucomannan (A-OKGM) (0%, 0.4%, 0.8%, and 1.6%) supplementation on the immunity and expression of immune-related genes in Schizothorax prenanti. After feeding for eight weeks, the serum and guts were used for measurement of biochemical parameters, and immune-related gene expression in the gut were also analyzed by real-time quantitative polymerase chain reaction (RT-qPCR). C-reactive protein and IgM levels were significantly higher in the A-OKGM fed groups than in the control group, regardless of the dosage...
November 28, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29178459/inflammatory-and-metabolic-responses-to-an-intramammary-lipopolysaccharide-challenge-in-early-lactating-cows-supplemented-with-conjugated-linoleic-acid
#10
J J Gross, L Grossen-Rösti, R Héritier, A Tröscher, R M Bruckmaier
Supplementation of dairy cows with trans-10, cis-12 conjugated linoleic acid (CLA) allows nutrient repartitioning despite an energy deficiency in early lactation, which might be a benefit for the immune system, too. In this study, we investigated potential nutrient sparing effects of CLA in early lactating cows with low plasma glucose concentrations exposed to an intramammary lipopolysaccharide (LPS) challenge. Fifteen multiparous Holstein cows were exposed to an intramammary LPS challenge in week 4 p.p. Eight cows (CLA) were supplemented daily with 70 g of lipid-encapsulated CLA (6...
November 26, 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/29177094/safety-and-immunogenicity-of-mage-a3-cancer-immunotherapeutic-with-dacarbazine-in-patients-with-mage-a3-positive-metastatic-cutaneous-melanoma-an-open-phase-i-ii-study-with-a-first-assessment-of-a-predictive-gene-signature
#11
Jean-Jacques Grob, Laurent Mortier, Lionel D'Hondt, Florent Grange, Jean Francois Baurain, Brigitte Dréno, Céleste Lebbe, Caroline Robert, Anne Dompmartin, Bart Neyns, Marc Gillet, Jamila Louahed, Silvija Jarnjak, Frédéric F Lehmann
Background: We assessed safety, immunogenicity and clinical activity of recombinant MAGE-A3 antigen combined with AS15 immunostimulant (MAGE-A3 immunotherapeutic) in association with dacarbazine in patients with metastatic melanoma. Methods: In this open-label, phase I/II, uncontrolled multicentre trial conducted in Belgium and France, patients with MAGE-A3-positive melanoma received up to 24 doses of MAGE-A3 immunotherapeutic (four cycles) coadministered with eight doses of dacarbazine...
2017: ESMO Open
https://www.readbyqxmd.com/read/29175472/vaccination-and-immune-responses-of-european-sea-bass-dicentrarchus-labrax-l-against-betanodavirus
#12
Francesco Buonocore, Noelia Nuñez-Ortiz, Simona Picchietti, Elisa Randelli, Valentina Stocchi, Laura Guerra, Anna Toffan, Francesco Pascoli, Anna Maria Fausto, Massimo Mazzini, Giuseppe Scapigliati
This review summarizes the available knowledge on the immune defences of European sea bass against antigenic preparations derived from the viral encephalopathy and retinopathy virus (betanodavirus), which represents a major threat to the health of this fish species. The nodavirus is widely present and differentiates into several strains that infect invertebrates (in insects, alphanodavirus) and teleost fish, and thus may represent a great problem for farmed fish species. Many efforts have been directed to discovering new immunizations to induce protection in sea bass, especially at young stages, and these efforts have included employing diverse betanodavirus strains, antigen preparation, vaccination routes, and the addition of adjuvants and/or immunostimulants...
November 22, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29174440/immunochemotherapy-mediated-by-thermosponge-nanoparticles-for-synergistic-anti-tumor-effects
#13
Yongdan Zhao, Qingle Song, Yijia Yin, Tingting Wu, Xiaomeng Hu, Xueqin Gao, Gao Li, Songwei Tan, Zhiping Zhang
The efficacy of immunotherapy was demonstrated to be compromised by reduced immunogenicity of tumor cells and enhanced suppressive properties of the tumor microenvironment in cancer treatment. There is growing evidence that low-dose chemotherapy can modulate the immune system to improve the anti-tumor effects of immunotherapy through multiple mechanisms, including the enhancement of tumor immunogenicity and reversal of the immunosuppressive tumor microenvironment. Here, we fabricated thermosponge nanoparticles (TSNs) for the co-delivery of chemotherapeutic drug paclitaxel (PTX) and immunostimulant interleukin-2 (IL-2) to explore the synergistic anti-tumor effects of chemotherapy and immunotherapy...
November 22, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/29172854/design-of-composite-microparticle-systems-based-on-pectin-and-waste-material-of-propolis-for-modified-l-alanyl-l-glutamine-release-and-with-immunostimulant-activity
#14
Mônica Villa Nova, Bianca A Ratti, Leandro S Herculano, Paulo R S Bittencourt, Cláudio R Novello, Roberto Barbosa Bazotte, Sueli de Oliveira Silva Lautenschlager, Marcos Luciano Bruschi
Catabolic conditions like acquired immunodeficiency syndrome, cancer and burn can cause immunosuppression. Amino acids such as alanine and glutamine are essential for the activity of the immune system. Propolis is immunostimulant and the waste of propolis extraction has been reused with technological and therapeutic purposes. Therefore, this study describes the association of propolis byproduct extract with pectin to prepare spray-dried microparticles containing the dipeptide L-alanyl-L-glutamine as stimulant systems of neutrophils...
November 27, 2017: Pharmaceutical Development and Technology
https://www.readbyqxmd.com/read/29162544/immunostimulation-and-yellow-head-virus-yhv-disease-resistance-induced-by-a-lignin-based-pulping-by-product-in-black-tiger-shrimp-penaeus-monodon-linn
#15
Prapansak Srisapoome, Kaoru Hamano, Isao Tsutsui, Kenji Iiyama
Yellow head virus (YHV) is classified as one of the most serious pathogens causing a harmful disease in many penaeids, especially black tiger shrimp (Penaeus monodon), with high economic loss. To determine a potent and practical prophylactic strategy for controlling this disease, the toxicity of the by-product kraft lignin and its ability to control severe YHV infection were investigated in juvenile black tiger shrimp (15.9 ± 1.2 g body weight). The median lethal dosage at 96 h (96-hrs LD50) of lignin in shrimp was 297 mg/L...
November 18, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29159986/l-asparaginase-isolated-from-streptomyces-ansochromogenes-promotes-th1-profile-and-activates-cd8-t-cells-in-human-pbmc-an-in-vitro-investigation
#16
Glêzia Renata da Silva Lacerda, Cristiane Moutinho Lagos de Melo, Ana Karine de Araújo Soares, Leyllane Rafael Moreira, Marília Cavalcanti Coriolano, Gláucia Manoella de Souza Lima, Thiago Henrique Napoleão, Virgínia Maria Barros de Lorena, Leonor Alves de Oliveira da Silva, Silene Carneiro do Nascimento
AIMS: A new L-asparaginase produced by Streptomyces ansochromogenes UFPEDA 3420 actinobacteria was used in this study against human lymphocyte cultures to evaluate the immunological profile induced by this enzyme. METHODS AND RESULTS: Cultures of lymphocytes were stimulated with S. ansochromogenes L-asparaginase and cytotoxicity, cell viability, cell stimulation and cytokine production were analyzed. This new S. ansochromogenes L-asparaginase induced activation and proliferation of the TCD8(+) lymphocyte subset and produced higher TNF-α, IFN-γ, IL-2 and IL-10 levels in a 24 hour assay...
November 21, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/29157965/polymer-based-nanoparticles-loaded-with-a-tlr7-ligand-to-target-the-lymph-node-for-immunostimulation
#17
Jérôme Widmer, Cédric Thauvin, Inès Mottas, Van N'guyen, Florence Delie, Eric Allémann, Carole Bourquin
Small-molecule agonists for the Toll-like receptors (TLR) 7 and 8 are effective for the immunotherapy of skin cancer when used as topical agents. Their systemic use has however been largely unsuccessful due to dose-limiting toxicity. We propose a polymer-based nanodelivery system to target resiquimod, a TLR7 ligand, to the lymph node in order to focus the immunostimulatory activity and to prevent a generalized inflammatory response. We demonstrate successful encapsulation of resiquimod in methoxypoly(ethylene glycol)-b-poly(DL-lactic acid) (mPEG-PLA) and mixed poly(DL-lactic-co-glycolic acid) (PLGA)/mPEG-PLA nanoparticles...
November 17, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/29156818/a-plasmid-containing-cpg-odn-as-vaccine-adjuvant-against-grass-carp-reovirus-in-grass-carp-ctenopharyngodon-idella
#18
Hang Su, Zhiwei Liao, Gailing Yuan, Jianguo Su
CpG oligodeoxynucleotides (ODNs) are proved to have strong immune stimulatory activity. Plasmids containing CpG ODNs could be conveniently and low-costly used as vaccine adjuvant. However, they are different among various plasmids, motif repeats, species, etc. In the present study, plasmid pcDNA3.1 (+) containing five repetitions of CpG ODN 1670A named pcDNA3.1-1670A*5 with strong immunostimulation was screened out from twelve recombinant plasmids and three empty vectors by cell proliferation activity, interferon promoter activities and immune related gene expressions in CIK cells...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29149938/novel-interventions-what-s-new-and-the-future
#19
REVIEW
Jean-Louis Vincent, David Grimaldi
Despite decades of sepsis research, no specific therapies for sepsis have emerged and current management still relies on source control, antibiotics, and organ support. With improved understanding of sepsis pathophysiology and the development of new techniques to enable better characterization of patients with sepsis, clinical trials are beginning to better target new interventions at those patients most likely to respond. This article discusses advances in sepsis therapeutics designed to improve endothelial cell function, purify the blood to help restore immune homeostasis, and provide immunostimulation for patients with immune exhaustion...
January 2018: Critical Care Clinics
https://www.readbyqxmd.com/read/29134676/a-safety-and-immunogenicity-study-of-a-novel-subunit-plague-vaccine-in-cynomolgus-macaques
#20
Li Liu, Dong Wei, Zhe Qu, Li Sun, Yufa Miao, Yanwei Yang, Jinbiao Lu, Weixin Du, Bingxiang Wang, Bo Li
Plague has led to millions of deaths in history and outbreaks continue to the present day. The efficacy limitations and safety concerns of the existing killed whole cell and live-attenuated vaccines call for the development of new vaccines. In this study, we evaluated the immunogenicity and safety of a novel subunit plague vaccine, comprising native F1 antigen and recombinant V antigen. The cynomolgus macaques in low- and high-dose vaccine groups were vaccinated at weeks 0, 2, 4 and 6, at dose levels of 15 μg F1 + 15 μg rV and 30 μg F1 + 30 μg rV respectively...
November 14, 2017: Journal of Applied Toxicology: JAT
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