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https://www.readbyqxmd.com/read/28927250/gut-microbiota-and-the-liver
#1
Alessandro Federico, Marcello Dallio, Giuseppe G Caprio, Vittorio M Ormando, Carmela Loguercio
Nowadays liver diseases represent one of major healthy problems in the world in terms of morbidity and mortality. The high prevalence of liver pathologies represents the key point to understand the necessity to identify the pathogenetic mechanisms that support these disorders in order to nurse them. Alterations of intestinal microbiota seem to play an important role in induction and promotion of liver damage progression, in addition to direct injury resulting from different causal agents. Gut microbiota is considered both as a promoting factor and as a potential therapeutic target of a large number of liver pathologies due to the connection between intestine and liver: the gut-liver axis...
December 2017: Minerva Gastroenterologica e Dietologica
https://www.readbyqxmd.com/read/28926114/diabetes-mediated-myelopoiesis-and-the-relationship-to-cardiovascular-risk
#2
REVIEW
Tessa J Barrett, Andrew J Murphy, Ira J Goldberg, Edward A Fisher
Diabetes is the greatest risk factor for the development of cardiovascular disease, which, in turn, is the most prevalent cause of mortality and morbidity in diabetics. These patients have elevations in inflammatory monocytes, a factor consistently reported to drive the development of atherosclerosis. In preclinical models of both type 1 and type 2 diabetes, studies have demonstrated that the increased production and activation of monocytes is driven by enhanced myelopoiesis, promoted by factors, including hyperglycemia, impaired cholesterol efflux, and inflammasome activation, that affect the proliferation of bone marrow precursor cells...
August 2017: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/28923684/ikk%C3%AE-activation-in-the-fetal-lung-mesenchyme-alters-lung-vascular-development-but-not-airway-morphogenesis
#3
Alyssa M McCoy, Jennifer L Herington, Ashley N Stouch, Anamika B Mukherjee, Omar Lakhdari, Timothy S Blackwell, Lawrence S Prince
In the immature lung, inflammation and injury disrupt epithelial-mesenchymal interactions required for normal development. Innate immune signaling and NF-κB activation disrupt the normal expression of multiple mesenchymal genes playing key roles in airway branching and alveolar formation. To test the role of the NF-κB pathway specifically in lung mesenchyme, we utilized the mesenchymal Twist2-Cre to drive expression of a constitutively active IKKβ mutant (IKKβca) in developing mice. Embryonic Twist2-IKKβca mice were generated in expected numbers and appeared grossly normal...
September 15, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28923085/inflammasome-lights-up-in-systemic-sclerosis
#4
EDITORIAL
John Henderson, Steven O'Reilly
Systemic sclerosis (SSc) is a pro-fibrotic condition with a poorly understood aetiology. Evidence presented by Artlett et al. in this issue suggests that the microRNA miR-155 is key, with its involvement dependent on the NLRP3 inflammasome. This links epigenetic events with inflammasome signalling in SSc and opens the door to new therapeutic strategies for the treatment of SSc.
September 18, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28921468/inflammasomes-in-the-gut-mucosal-homeostasis
#5
Xiaomin Yao, Guangxun Meng
Inflammasomes are critical checkpoints in inflammation. The activation of inflammasome can cause a series of inflammatory responses including maturation of interleukin (IL)-1β and IL-18 and a specialized form of cell death called pyroptosis. Since its identification in the early 2000s, inflammasomes have been implicated to play multifaceted roles in varied pathological and physiological conditions, especially in the mucosal compartments including the gut. Maintaining gut mucosal homeostasis has always been a remarkable challenge for the host due to both the vast mucosal surface that is exposed to the outside and the enormous amount of local microbiota...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28921464/posttranslational-modification-control-of-inflammatory-signaling
#6
Yibo Si, Yunlu Zhang, Zijuan Chen, Ruixue Zhou, Yihua Zhang, Doudou Hao, Dapeng Yan
Inflammation is usually the defensive reaction of the immune system to the invasion of pathogen and the exogenous objects. The activation of inflammation helps our body to eliminate pathogenic microbe, virus, and parasite harming our health, while under many circumstances inflammation is the direct cause of the pathological damage in tissues and dysfunction of organs. The posttranslational modification (PTM) of the inflammatory pathways, such as TLR pathways, RLR pathways, NLR pathway, intracellular DNA sensors, intracellular RNA sensors, and inflammasomes, is crucial in the regulation of these signaling trails...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28921463/activation-of-the-innate-immune-receptors-guardians-of-the-micro-galaxy-activation-and-functions-of-the-innate-immune-receptors
#7
Dominic De Nardo
The families of innate immune receptors are the frontline responders to danger. These superheroes of the host immune systems populate innate immune cells, surveying the extracellular environment and the intracellular endolysosomal compartments and cytosol for exogenous and endogenous danger signals. As a collective the innate immune receptors recognise a wide array of stimuli, and in response they initiate specific signalling pathways leading to activation of transcriptional or proteolytic pathways and the production of inflammatory molecules to destroy foreign pathogens and/or resolve tissue injury...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28918908/macrophage-biology-plays-a-central-role-during-ionizing-radiation-elicited-tumor-response
#8
REVIEW
Qiuji Wu, Awatef Allouch, Isabelle Martins, Nazanine Modjtahedi, Eric Deutsch, Jean-Luc Perfettini
Radiation therapy is one of the major therapeutic modalities for most solid tumors. The anti-tumor effect of radiation therapy consists of the direct tumor cell killing, as well as the modulation of tumor microenvironment and the activation of immune response against tumors. Radiation therapy has been shown to promote immunogenic cells death, activate dendritic cells and enhance tumor antigen presentation and anti-tumor T cell activation. Radiation therapy also programs innate immune cells such as macrophages that leads to either radiosensitization or radioresistance, according to different tumors and different radiation regimen studied...
August 2017: Biomedical Journal
https://www.readbyqxmd.com/read/28918467/anisodamine-inhibits-endoplasmic-reticulum-stress-associated-txnip-nlrp3-inflammasome-activation-in-rhabdomyolysis-induced-acute-kidney-injury
#9
Xiaopeng Yuan, Yitao Zheng, Chuanbao Chen, Changxi Wang
Anisodamine protects against free radical-induced cellular damage. This study aimed to investigate the protective effect of anisodamine on rhabdomyolysis-induced acute kidney injury (RIAKI). C57BL/6 J mice, TXNIP(-/-) and NLRP3 (-/-) (both were C57BL/6 J background) mice were used to construct RIAKI model. Anisodamine administration was performed on RIAKI mice only. Mice were divided into control, TXNIP-KD (knock down), LNPR3-KD, and anisodamine group (n = 15 in each group). The renal injury, renal function, renal tubular cells apoptosis and expression of Caspase-1, ASC, endoplasmic reticulum (ER) stress markers IRE-1α, CHOP, and ATF4, and interleukin (IL-1α, IL-1β, and IL-18) were detected...
September 16, 2017: Apoptosis: An International Journal on Programmed Cell Death
https://www.readbyqxmd.com/read/28917925/synthesis-of-synthetic-mannan-backbone-polysaccharides-found-on-the-surface-of-mycobacterium-tuberculosis-as-a-vaccine-adjuvant-and-their-immunological-properties
#10
Chakree Wattanasiri, Jiraporn Paha, Marisa Ponpuak, Somsak Ruchirawat, Siwarutt Boonyarattanakalin
Surface components of Mycobacterium tuberculosis (Mtb) play crucial roles in modulating host immune responses. Thorough understandings of immunological properties of the Mtb's surface components are essential for the development of tuberculosis treatment and prevention. Unfortunately, the accessibility to the molecules on the surface of Mtb is limited by the structural complexity due to their various macromolecular nature and the hazard of culturing Mtb. In this study, we reveal a practical synthesis of lipomannan (LM) backbone polysaccharides - the core glycans found on Mtb's surface...
November 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28916522/viral-infection-sensitizes-human-fetal-membranes-to-bacterial-lipopolysaccharide-by-mertk-inhibition-and-inflammasome-activation
#11
Sarah N Cross, Julie A Potter, Paulomi Aldo, Ja Young Kwon, Mary Pitruzzello, Mancy Tong, Seth Guller, Carla V Rothlin, Gil Mor, Vikki M Abrahams
Chorioamnionitis, premature rupture of fetal membranes (FMs), and subsequent preterm birth are associated with local infection and inflammation, particularly IL-1β production. Although bacterial infections are commonly identified, other microorganisms may play a role in the pathogenesis. Because viral pandemics, such as influenza, Ebola, and Zika, are becoming more common, and pregnant women are at increased risk for associated complications, this study evaluated the impact that viral infection had on human FM innate immune responses...
September 15, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28915449/increased-expression-of-nlrp3-inflammasome-in-placentas-from-pregnant-women-with-severe-preeclampsia
#12
Ingrid C Weel, Mariana Romão-Veiga, Mariana L Matias, Eduardo G Fioratti, Jose C Peraçoli, Vera T Borges, João P Araujo, Maria T Peraçoli
Preeclampsia is a pregnancy disorder characterized by imbalance between pro- and anti-inflammatory cytokines associated with high plasma levels of uric acid and Interleukin-1 beta (IL-1β). The inflammasome is a protein complex that mediates innate immune responses via caspase-1 activation promoting secretion of IL-1β and IL-18 in their active forms, and also release of the high-mobility group box 1 protein (HMGB1). As the placenta seems to play an important role in the pathogenesis of PE, the present study investigated the expression of genes and proteins related to the inflammasome in placentas from pregnant women with severe preeclampsia...
September 6, 2017: Journal of Reproductive Immunology
https://www.readbyqxmd.com/read/28914570/inflammasome-deficiency-makes-pro-resolving-lipid-mediators-great-again
#13
Bastian Opitz
No abstract text is available yet for this article.
September 15, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28912345/a-novel-bibenzyl-compound-20c-protected-mice-from-mptp-p-toxicity-by-regulating-alpha-synuclein-related-inflammatory-response
#14
Qiu-Shuang Zhang, Yang Heng, Ying Chen, Piao Luo, Lu Wen, Zhao Zhang, Yu-He Yuan, Nai-Hong Chen
The novel bibenzyl compound 20C plays a neuroprotective role in vitro, but its effects in vivo have not been elucidated. In this study, we estimated the efficacy of 20C in vivo using a 1-methyl-4-phenyl-1, 2, 3, 6-tetrahydropyridine/probenecid (MPTP/p) mouse model from behavior, dopamine and neuron, and then the possible mechanisms for these effects were further investigated. The experimental results showed that 20C improved behavioral deficits, attenuated dopamine depletion, reduced dopaminergic neuron loss, protected blood brain barrier structure, ameliorated α-synuclein dysfunction, suppressed glial activation, and regulated both NF-κB signaling and the NLRP3 inflammasome pathway...
September 14, 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/28904553/manual-acupuncture-suppresses-the-expression-of-proinflammatory-proteins-associated-with-the-nlrp3-inflammasome-in-the-hippocampus-of-samp8-mice
#15
Ning Ding, Jing Jiang, Menghan Lu, Jiatong Hu, Yiyuan Xu, Xiaoxiao Liu, Zhigang Li
OBJECTIVE: To investigate the effect of manual acupuncture (MA) on NLRP3 inflammasome-related proteins. METHODS: SAMP8 mice were randomly divided into Alzheimer's disease (AD) group, the MA group, and the medicine (M) group. Mice in the M group were treated with donepezil hydrochloride at 0.65 μg/g. In the MA group, MA was applied on Baihui (GV20) and Yintang (GV29) for 20 min and then pricked at Shuigou (GV26). The Morris water maze was applied to assess spatial learning and memory...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28904126/nlrp3-and-potassium-efflux-drive-rapid-il-1%C3%AE-release-from-primary-human-monocytes-during-toxoplasma-gondii-infection
#16
Lanny Gov, Christine A Schneider, Tatiane S Lima, William Pandori, Melissa B Lodoen
IL-1β is produced by myeloid cells and acts as a critical mediator of host defense during infection and injury. We found that the intracellular protozoan parasite Toxoplasma gondii induced an early IL-1β response (within 4 h) in primary human peripheral blood monocytes isolated from healthy donors. This process involved upregulation of IL-1β, IL-1RN (IL-1R antagonist), and NLRP3 transcripts, de novo protein synthesis, and the release of pro- and mature IL-1β from infected primary monocytes. The released pro-IL-1β was cleavable to mature bioactive IL-1β in the extracellular space by the protease caspase-1...
September 13, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28903766/fluoxetine-enhanced-autophagy-ameliorates-early-brain-injury-via-inhibition-of-nlrp3-inflammasome-activation-following-subrachnoid-hemorrhage-in-rats
#17
Jian-Ru Li, Hang-Zhe Xu, Sheng Nie, Yu-Cong Peng, Lin-Feng Fan, Zhi-Jiang Wang, Cheng Wu, Feng Yan, Jing-Yin Chen, Chi Gu, Chun Wang, Jing-Sen Chen, Lin Wang, Gao Chen
BACKGROUND: The NLRP3 inflammasome is a multiprotein complex that regulates the innate immune inflammatory response by activating caspase-1 and subsequent IL-1β and IL-18. Fluoxetine has been shown to have the anti-inflammatory properties in many disease models. However, the effects and mechanisms of these effects of fluoxetine in early brain injury after subarachnoid hemorrhage (SAH) have not been defined. METHODS: The SAH model was induced by an endovascular perforation in adult male Sprague-Dawley (SD) rats weighing 300-320 g...
September 13, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28903492/editor-s-highlight-nlrp3-is-required-for-inflammatory-changes-and-nigral-cell-loss-resulting-from-chronic-intragastric-rotenone-exposure-in-mice
#18
Eileen M Martinez, Alison L Young, Yash R Patankar, Brent L Berwin, Li Wang, Katharine M von Herrmann, Jaclyn M Weier, Matthew C Havrda
Complex interactions between genetic and environmental factors are widely believed to underlie the incidence and progression of Parkinson's disease (PD). Rotenone is a naturally occurring metabolic toxin employed as an insecticide and piscicide identified as a risk factor for the development of PD in agricultural workers. The Nlrp3 inflammasome is an intracellular mediator that can initiate an inflammatory cascade in response to cellular stress. Reports by others indicating that NLRP3 expression was detectable in tissues obtained from Alzheimer's disease patients and that the PD-associated protein α-synuclein could activate inflammasomes in cultured glial cells, prompted us to test the prediction that Nlrp3 was required for the development of Parkinson's-like changes resulting from rotenone exposure in mice...
September 1, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28902711/triggering-of-inflammasome-by-impaired-autophagy-in-response-to-acute-experimental-parkinson-s-disease-involvement-of-the-pi3k-akt-mtor-pathway
#19
Sabrina Giacoppo, Placido Bramanti, Emanuela Mazzon
Several lines of evidence suggest that the inflammasome activation is involved in the progression of neurodegenerative diseases. However, the relation between Parkinson's disease (PD) and the inflammasome is still unclear. This study was designed to assess the involvement of inflammasome in acute experimental PD. Specifically, acute PD was induced in C57BL/6 mice by an injection of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP). At seven days from MPTP induction, mice were euthanized and the midbrains were sampled to carry out immunohistochemical evaluations and western blot analysis...
September 11, 2017: Neuroreport
https://www.readbyqxmd.com/read/28902427/nlrp3-inflammasome-driven-liver-injury-and-fibrosis-roles-of-il-17-and-tnf
#20
Alexander Wree, Matthew D McGeough, Maria Eugenia Inzaugarat, Akiko Eguchi, Susanne Schuster, Casey D Johnson, Carla A Peña, Lukas J Geisler, Bettina G Papouchado, Hal M Hoffman, Ariel E Feldstein
The NLRP3 inflammasome, a caspase-1 activation platform plays a key role in the modulation of liver inflammation and fibrosis. Here, we tested the hypothesis that interleukin 17 (IL-17) and tumor necrosis factor (TNF) are key cytokines involved in amplifying and perpetuating the liver damage and fibrosis resulting from NLRP3 activation. To address this hypothesis gain of function Nlrp3(A350V) knock-in mice were bred onto il17a and Tnf knockout backgrounds allowing for constitutive Nlrp3 activation in myeloid derived cells in mice deficient in IL-17 or TNF...
September 13, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
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