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https://www.readbyqxmd.com/read/28535598/antarctic-seals-molecular-biomarkers-as-indicators-for-pollutant-exposure-health-effects-and-diet
#1
K Lehnert, L Weirup, K C Harding, T Härkönen, O Karlsson, J Teilmann
Weddell (Leptonychotes weddellii), Ross (Ommatophoca rossii) and crabeater seals (Lobodon carcinophaga) are phocid seals with a circumpolar distribution around Antarctica. As long-lived and large top predators, they bioaccumulate contaminants and are considered as sentinels of ecosystem health. Antarctic seals are increasingly exposed to climate change, pollution, shipping and fisheries. To reveal and understand possible anthropogenic impacts on their immune and health status, this study investigates sensitive biomarkers of the xenobiotic metabolism and immune system in relation to mercury (Hg) burden...
May 19, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28534174/the-il-1%C3%AE-phenomena-in-neuroinflammatory-diseases
#2
REVIEW
Andrew S Mendiola, Astrid E Cardona
It is becoming increasingly clear that neuroinflammation has a causal role in the pathogenesis of central nervous system (CNS)-related diseases, and therefore therapeutic strategies targeting the regulation or availability of inflammatory mediators can be used to prevent or mitigate pathology. Interestingly, the proinflammatory cytokine, interleukin-1 beta (IL-1β), has been implicated in perpetuating immune responses and contributing to disease severity in a variety of CNS diseases ranging from multiple sclerosis, neurodegenerative diseases, traumatic brain injury, and diabetic retinopathy...
May 22, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28533778/dnase1l3-regulates-inflammasome-dependent-cytokine-secretion
#3
Guilan Shi, Kennady N Abbott, Wenbo Wu, Russell D Salter, Peter A Keyel
Pediatric-onset systemic lupus erythematosus arises in humans and mice lacking the endonuclease Dnase1L3. When Dnase1L3 is absent, DNA from circulating apoptotic bodies is not cleared, leading to anti-DNA antibody production. Compared to early anti-DNA and anti-chromatin responses, other autoantibody responses and general immune activation in Dnase1L3(-/-) mice are greatly delayed. We investigated the possibility that immune activation, specifically inflammasome activation, is regulated by Dnase1L3. Here, we report that Dnase1L3 inhibition blocked both NLR family, pyrin domain containing 3 (NLRP3) and NLRC4 inflammasome-mediated release of high-mobility group box 1 protein and IL-1β...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28533483/high-il-1r8-expression-in-breast-tumors-promotes-tumor-growth-and-contributes-to-impaired-antitumor-immunity
#4
Luis Felipe Campesato, Ana Paula M Silva, Luna Cordeiro, Bruna R Correa, Fabio C P Navarro, Rafael F Zanin, Marina Marçola, Lilian T Inoue, Mariana L Duarte, Martina Molgora, Fabio Pasqualini, Matteo Massara, Pedro Galante, Romualdo Barroso-Sousa, Nadia Polentarutti, Federica Riva, Erico T Costa, Alberto Mantovani, Cecilia Garlanda, Anamaria A Camargo
Tumors develop numerous strategies to fine-tune inflammation and avoid detection and eradication by the immune system. The identification of mechanisms leading to local immune dysregulation is critical to improve cancer therapy. We here demonstrate that Interleukin-1 receptor 8 (IL-1R8 - previously known as SIGIRR/TIR8), a negative regulator of Toll-Like and Interleukin-1 Receptor family signaling, is up-regulated during breast epithelial cell transformation and in primary breast tumors. IL-1R8 expression in transformed breast epithelial cells reduced IL-1-dependent NF-κB activation and production of pro-inflammatory cytokines, inhibited NK cell activation and favored M2-like macrophage polarization...
May 9, 2017: Oncotarget
https://www.readbyqxmd.com/read/28532674/cytokine-expression-levels-in-als-a-potential-link-between-inflammation-and-bmaa-triggered-protein-misfolding
#5
Nara Michaelson, Dominic Facciponte, Walter Bradley, Elijah Stommel
Recently, it has been shown that proinflammatory cytokines play a complex and important role in the pathogenesis of many neurological disorders, including amyotrophic lateral sclerosis (ALS). To help facilitate future discoveries and more effective treatment strategies, we highlight the role that both innate and adaptive immune systems play in ALS and summarize the main observations that relate to cytokine expression levels in this disease. Furthermore, we propose a mechanism by which a known neurotoxin, β-N-methylamino-l-alanine (BMAA), may trigger this cytokine expression profile through motor neuron protein misfolding and subsequent NLRP3 (nucleotide-binding domain (NOD)-like receptor protein 3) inflammasome activation...
May 10, 2017: Cytokine & Growth Factor Reviews
https://www.readbyqxmd.com/read/28532492/innate-immune-responses-induced-by-the-saponin-adjuvant-matrix-m-in-specific-pathogen-free-pigs
#6
Viktor Ahlberg, Bernt Hjertner, Per Wallgren, Stina Hellman, Karin Lövgren Bengtsson, Caroline Fossum
Saponin-based adjuvants have been widely used to enhance humoral and cellular immune responses in many species, but their mode of action is not fully understood. A characterization of the porcine transcriptional response to Matrix-M was performed in vitro using lymphocytes, monocytes or monocyte-derived dendritic cells (MoDCs) and in vivo. The effect of Matrix-M was also evaluated in specific pathogen free (SPF) pigs exposed to conventionally reared pigs. The pro-inflammatory cytokine genes IL1B and CXCL8 were up-regulated in monocytes and lymphocytes after Matrix-M exposure...
May 22, 2017: Veterinary Research
https://www.readbyqxmd.com/read/28532450/lps-induced-systemic-inflammation-reveals-an-immunomodulatory-role-for-the-prion-protein-at-the-blood-brain-interface
#7
Ø Salvesen, M R Reiten, A Espenes, M K Bakkebø, M A Tranulis, C Ersdal
BACKGROUND: The cellular prion protein (PrP(C)) is an evolutionary conserved protein abundantly expressed not only in the central nervous system but also peripherally including the immune system. A line of Norwegian dairy goats naturally devoid of PrP(C) (PRNP (Ter/Ter)) provides a novel model for studying PrP(C) physiology. METHODS: In order to explore putative roles for PrP(C) in acute inflammatory responses, we performed a lipopolysaccharide (LPS, Escherichia coli O26:B6) challenge of 16 goats (8 PRNP (+/+) and 8 PRNP (Ter/Ter)) and included 10 saline-treated controls (5 of each PRNP genotype)...
May 22, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28529928/the-probiotic-compound-vsl-3-modulates-mucosal-peripheral-and-systemic-immunity-following-murine-broad-spectrum-antibiotic-treatment
#8
Ira Ekmekciu, Eliane von Klitzing, Ulrike Fiebiger, Christian Neumann, Petra Bacher, Alexander Scheffold, Stefan Bereswill, Markus M Heimesaat
There is compelling evidence linking the commensal intestinal microbiota with host health and, in turn, antibiotic induced perturbations of microbiota composition with distinct pathologies. Despite the attractiveness of probiotic therapy as a tool to beneficially alter the intestinal microbiota, its immunological effects are still incompletely understood. The aim of the present study was to assess the efficacy of the probiotic formulation VSL#3 consisting of eight distinct bacterial species (including Streptococcus thermophilus, Bifidobacterium breve, B...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28529904/mini-review-of-conventional-and-hypofractionated-radiation-therapy-combined-with-immunotherapy-for-non-small-cell-lung-cancer
#9
REVIEW
Allison M Campbell, Roy H Decker
A successful antitumoral response requires immunological activation as well as an antigenic pool capable of stimulating both the innate and the adaptive immune system. Recent advances in immunotherapy have been aimed at boosting the activation status of the innate and adaptive immune system, including cytokine administration, monoclonal antibodies engineered to target high yield elements in oncogenic signaling pathways, cancer vaccines, and checkpoint inhibitors. Herein, we examine the ways that radiation therapy induced cell death provides a pool of stimulus antigen, and draw parallels from the immunobiology of autoimmunity to explore how the immunogenicity of antigen derived from radiation-induced cell death might augment the antitumoral response...
April 2017: Translational Lung Cancer Research
https://www.readbyqxmd.com/read/28529900/immunotherapy-and-radiation-therapy-for-operable-early-stage-and-locally-advanced-non-small-cell-lung-cancer
#10
REVIEW
Neil K Taunk, Andreas Rimner, Melissa Culligan, Joseph S Friedberg, Julie Brahmer, Jamie Chaft
Non-small cell lung cancer (NSCLC) is the most common cause of cancer mortality. Although a significant proportion of patients can be cured with surgery, with or without adjuvant or neoadjuvant chemotherapy and radiation, a significant proportion of patients will fail, particularly distantly. Over fifty percent of patients present with stage IV disease. There are multiple forms of immunotherapy available including T-cell transfer, cytokine therapy, and oncolytic viruses. Checkpoint inhibitors have shown tremendous activity in NSCLC and are currently under intense study given promising data on response...
April 2017: Translational Lung Cancer Research
https://www.readbyqxmd.com/read/28529069/cholinergic-modulation-of-the-immune-system-presents-new-approaches-for-treating-inflammation
#11
REVIEW
Donald B Hoover
The nervous system and immune system have broad and overlapping distributions in the body, and interactions of these ubiquitous systems are central to the field of neuroimmunology. Over the past two decades, there has been explosive growth in our understanding of neuroanatomical, cellular, and molecular mechanisms that mediate central modulation of immune functions through the autonomic nervous system. A major catalyst for growth in this field was the discovery that vagal nerve stimulation (VNS) caused a prominent attenuation of the systemic inflammatory response evoked by endotoxin in experimental animals...
May 18, 2017: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28528966/nampt-inhibitor-protects-ischemic-neuronal-injury-in-rat-brain-via-anti-neuroinflammation
#12
Chen-Xiang Chen, Jing Huang, Ga-Qi Tu, Jia-Tong Lu, Xian Xie, Bing Zhao, Ming Wu, Qiao-Juan Shi, San-Hua Fang, Er-Qing Wei, Wei-Ping Zhang, Yun-Bi Lu
Nicotinamide phosphoribosyltransferase (NAMPT) is an important neuroprotective factor in cerebral ischemia, and it has been reported that NAMPT inhibitors can aggravate neuronal injury in the acute phase. However, because it is a cytokine, NAMPT participates in many inflammatory diseases in the peripheral system, and its inhibitors have therapeutic effects. Following cerebral ischemia, the peripheral and resident inflammatory and immune cells produce many pro-inflammatory mediators in the ischemic area, which induce neuroinflammation and impair the brain...
May 18, 2017: Neuroscience
https://www.readbyqxmd.com/read/28528956/brain-interference-revisiting-the-role-of-ifn%C3%AE-in-the-central-nervous-system
#13
REVIEW
S Monteiro, S Roque, F Marques, M Correia-Neves, J J Cerqueira
Interferon gamma (IFNγ) is a pro-inflammatory cytokine, first described as a secreted molecule capable of interfering with viral replication. Since then, numerous other important actions in the context of the immune response to invading pathogens (including those invading the brain) have been ascribed to this pleiotropic cytokine. Nevertheless, the precise role of IFNγ in neuropsychiatric and neurodegenerative disorders, and its possible contribution to the regulation of normal brain function, remains enigmatic...
May 18, 2017: Progress in Neurobiology
https://www.readbyqxmd.com/read/28528914/systemic-sclerosis-dermal-fibroblasts-suppress-th1-cytokine-production-via-galectin-9-overproduction-due-to-fli1-deficiency
#14
Ryosuke Saigusa, Yoshihide Asano, Kouki Nakamura, Megumi Hirabayashi, Shunsuke Miura, Takashi Yamashita, Takashi Taniguchi, Yohei Ichimura, Takehiro Takahashi, Ayumi Yoshizaki, Tomomitsu Miyagaki, Makoto Sugaya, Shinichi Sato
Dermal fibroblasts promote skin-localized transdifferentiation of Tregs to Th2-like cells in systemic sclerosis (SSc). However, the entire effect of SSc dermal fibroblasts on immune cells still remains unknown. Since galectin-9 induces Th2 cytokine-predominant immune imbalance by negatively regulating Th1/Th17 cells in inflammatory diseases, we investigated the contribution of galectin-9 to Th immune balance in SSc lesional skin. We utilized human clinical samples and Fli1(+/-) mice because Fli1 deficiency induces SSc-like phenotypes in various cell types...
May 18, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28528324/new-role-for-interleukin-13-receptor-%C3%AE-1-in-myocardial-homeostasis-and-heart-failure
#15
Uri Amit, David Kain, Allon Wagner, Avinash Sahu, Yael Nevo-Caspi, Nir Gonen, Natali Molotski, Tal Konfino, Natalie Landa, Nili Naftali-Shani, Galia Blum, Emmanuelle Merquiol, Danielle Karo-Atar, Yariv Kanfi, Gidi Paret, Ariel Munitz, Haim Y Cohen, Eytan Ruppin, Sridhar Hannenhalli, Jonathan Leor
BACKGROUND: The immune system plays a pivotal role in myocardial homeostasis and response to injury. Interleukins-4 and -13 are anti-inflammatory type-2 cytokines, signaling via the common interleukin-13 receptor α1 chain and the type-2 interleukin-4 receptor. The role of interleukin-13 receptor α1 in the heart is unknown. METHODS AND RESULTS: We analyzed myocardial samples from human donors (n=136) and patients with end-stage heart failure (n=177). We found that the interleukin-13 receptor α1 is present in the myocardium and, together with the complementary type-2 interleukin-4 receptor chain Il4ra, is significantly downregulated in the hearts of patients with heart failure...
May 20, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28528205/heterotrimeric-complex-of-p38-mapk-pkc%C3%AE-and-tirap-is-required-for-ap1-mediated-inflammatory-response
#16
Mirza S Baig, Dongfang Liu, Kannan Muthu, Anjali Roy, Uzma Saqib, Adnan Naim, Syed M Faisal, Mansi Srivastava, Rohit Saluja
Inflammation could be described as a physiological response of the body to tissue injury, pathogen invasion, and irritants. During the inflammatory phase, cells of both the innate as well as adaptive immune system are activated and recruited to the site of inflammation. These mediators are downstream targets for the transcription factors; activator protein-1 (AP1), nuclear factor kappa-light-chain-enhancer (NF-κB), signal transducers and activators of transcription factors (STAT1), as well as interferon regulatory factors (IRFs), which control the expression of most immunomodulatory genes...
May 18, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28527347/immunostimulatory-activity-of-plumieride-an-iridoid-in-augmenting-immune-system-by-targeting-th-1-pathway-in-balb-c-mice
#17
Jasvinder Singh, Arem Qayum, Rachna D Singh, Mytre Koul, Anpurna Kaul, N K Satti, Prabhu Dutt, Abid Hamid, Shashank Singh
Plumieride, an iridoid glucoside isolated from Plumieria acutifolia leaves was investigated for its immunostimulatory activity on humoral, cell mediated and intracellular cytokine levels in sensitized and unsensitised balb/c mice. Plumieride restores the suppressed cell mediated, humoral immune response and also enhances the release of TNF- α, IFN-γ, and IL-2 (Th-1) in immune compromised cyclosporine and cyclophosphamide treated balb/c mice. It does not stimulate the IL-4 (Th-2) expression. Plumieride demonstrates significant augmentation of Th-1 response in immunosuppressed balb/c mice...
May 17, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28525674/continuous-hemoadsorption-with-a-cytokine-adsorber-during-sepsis-a-review-of-the-literature
#18
Khosrow S Houschyar, Malcolm N Pyles, Susanne Rein, Ina Nietzschmann, Dominik Duscher, Zeshaan N Maan, Kristian Weissenberg, Hubertus M Philipps, Catharina Strauss, Beate Reichelt, Frank Siemers
Sepsis is a well-recognized healthcare issue worldwide, ultimately resulting in significant mortality, morbidity and resource utilization during and after critical illness. In its most severe form, sepsis causes multi-organ dysfunction that produces a state of critical illness characterized by severe immune dysfunction and catabolism. Sepsis induces the activation of complement factor via 3 pathways and the release of inflammatory cytokines such as tumor necrosis factor alpha (TNF-α) and interleukin-1beta (IL-1β), resulting in a systemic inflammatory response...
May 19, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28523588/advances-in-the-development-of-janus-kinase-inhibitors-in-inflammatory-bowel-disease-future-prospects
#19
Mathurin Flamant, Josselin Rigaill, Stephane Paul, Xavier Roblin
Inflammatory bowel disease (IBD) is caused by a dysregulation of the immune system, inducing the production of proinflammatory cytokines and adhesion molecules. A better understanding of the mucosal immune response in IBD has led to the development of new drugs directed at inflammatory cytokines and leukocyte-trafficking molecules. Beyond tumor necrosis factor antagonists and anti-integrin molecules, which act by blocking the interaction between gut-specific lymphocytes and their receptor on vascular endothelium, the Janus kinase/signal transducer and activator of transcription (JAK/STAT) signaling pathway represents a new target in IBD...
May 18, 2017: Drugs
https://www.readbyqxmd.com/read/28522850/pseudomonas-aeruginosa-exolysin-promotes-bacterial-growth-in-lungs-alveolar-damage-and-bacterial-dissemination
#20
Stéphanie Bouillot, Patrick Munro, Benoit Gallet, Emeline Reboud, François Cretin, Guillaume Golovkine, Guy Schoehn, Ina Attrée, Emmanuel Lemichez, Philippe Huber
Exolysin (ExlA) is a recently-identified pore-forming toxin secreted by a subset of Pseudomonas aeruginosa strains identified worldwide and devoid of Type III secretion system (T3SS), a major virulence factor. Here, we characterized at the ultrastructural level the lesions caused by an ExlA-secreting strain, CLJ1, in mouse infected lungs. CLJ1 induced necrotic lesions in pneumocytes and endothelial cells, resulting in alveolo-vascular barrier breakdown. Ectopic expression of ExlA in an exlA-negative strain induced similar tissue injuries...
May 18, 2017: Scientific Reports
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