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https://www.readbyqxmd.com/read/28810880/nlrp7-contributes-to-in-vitro-decidualization-of-endometrial-stromal-cells
#1
Jyun-Yuan Huang, Pei-Hsiu Yu, Yueh-Chun Li, Pao-Lin Kuo
BACKGROUND: Nucleotide-binding oligomerization domain (NACHT), leucine rich repeat (LRR) and pyrin domain (PYD) 7 containing protein, NLRP7, is a member of the NLR family which serves as innate immune sensors. Mutations and genetic variants of NLRP7 have been found in women with infertility associated conditions, such as recurrent hydatidiform mole, recurrent miscarriage, and preeclampsia. Decidualization of endometrial stromal cells is a hallmark of tissue remodeling to support embryo implantation and proper placental development...
August 15, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/28800542/digitoflavone-dg-attenuates-lps-induced-acute-lung-injury-through-reducing-oxidative-stress-and-inflammatory-response-dependent-on-the-suppression-of-txnip-nlrp3-and-nf-%C3%AE%C2%BAb
#2
Min Meng
Acute lung injury is a severe disease with a high rate of mortality. Digitoflavone (DG) was suggested to possess bioactivities to reduce oxidative stress, inflammation and to regulate apoptosis. In our study, the normal saline, a low dose of DG (12.5mg/kg), a medium dose of DG (25mg/kg) and a high dose of DG (50mg/kg) were administered to male C57BL/6 mice by gavage. And then, the mice were intratracheally injected with either normal saline or lipopolysaccharide (LPS). We found that DG ameliorated LPS-induced lung injury and platelets activation, accompanied with reduced CD41 expression and neutrophil platelet aggregates (NPAs)...
August 8, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28796840/yes-research-matters
#3
Mari L Shinohara
My father was diagnosed with stomach cancer recently. Luckily, it was still at an early stage, and endoscopic surgery successfully took care of it. My father was fortunate; since people with stomach cancer do not show clear symptoms in the early stages, the disease is often not diagnosed until it becomes advanced. In his case, the diagnosis started from a suggestion by his doctor to check whether he had a gastric infection with Helicobacter pylori, a bacterial species found in the digestive tract. In Japan, where he lives, a majority of gastric cancer patients (more than 99%) have been infected with H...
August 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28796264/lytic-cell-death-induced-by-melittin-bypasses-pyroptosis-but-induces-nlrp3-inflammasome-activation-and-il-1%C3%AE-release
#4
Fátima Martín-Sánchez, Juan José Martínez-García, María Muñoz-García, Miriam Martínez-Villanueva, José A Noguera-Velasco, David Andreu, Luís Rivas, Pablo Pelegrín
The nucleotide-binding domain and leucine-rich repeat-containing receptor with a pyrin domain 3 (NLRP3) inflammasome is a sensor for different types of infections and alterations of homeostatic parameters, including abnormally high levels of the extracellular nucleotide ATP or crystallization of different metabolites. All NLRP3 activators trigger a similar intracellular pathway, where a decrease in intracellular K(+) concentration and permeabilization of plasma membrane are key steps. Cationic amphipathic antimicrobial peptides and peptide toxins permeabilize the plasma membrane...
August 10, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28790925/nlrp3-inflammasome-as-a-molecular-marker-in-diabetic-cardiomyopathy
#5
REVIEW
Beibei Luo, Feng Huang, Yanli Liu, Yiying Liang, Zhe Wei, Honghong Ke, Zhiyu Zeng, Weiqiang Huang, Yan He
Diabetic cardiomyopathy (DCM), a common consequence of longstanding diabetes mellitus, is initiated by death of cardiomyocyte. Hyperglycemia-induced reactive oxygen species (ROS) overproduction is a major contributor of the chronic low-grade inflammation that characterizes as the DCM. ROS may promote the activation of nucleotide-binding oligomerization domain like receptor (NLR) pyrin domain containing 3 (NLRP3) inflammasome, a novel regulator of inflammation and cell death, by nuclear factor-kB (NF-κB) and thioredoxin interacting/inhibiting protein (TXNIP)...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28790324/the-h7n9-influenza-a-virus-infection-results-in-lethal-inflammation-in-the-mammalian-host-via-the-nlrp3-caspase-1-inflammasome
#6
Rongrong Ren, Shuxian Wu, Jialin Cai, Yuqin Yang, Xiaonan Ren, Yanling Feng, Lixiang Chen, Boyin Qin, Chunhua Xu, Hua Yang, Zhigang Song, Di Tian, Yunwen Hu, Xiaohui Zhou, Guangxun Meng
The avian origin influenza A virus (IAV) H7N9 has caused a considerable number of human infections associated with high rates of death since its emergence in 2013. As a vital component of the host innate immune system, the nucleotide-binding domain leucine-rich repeat containing receptor, pyrin domain containing 3 (NLRP3) inflammasome plays a critical role against H1N1 viral infection. However, the function of NLRP3 inflammasome in host immunological responses to the lethal H7N9 virus is still obscure. Here, we demonstrated that mice deficient for NLRP3 inflammasome components, including NLRP3, caspase-1, and Apoptosis-associated speck-like protein containing a CARD (ASC), were less susceptible to H7N9 viral challenge than wild type (WT) controls...
August 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28783694/zbp1-dai-is-an-innate-sensor-of-influenza-virus-triggering-the-nlrp3-inflammasome-and-programmed-cell-death-pathways
#7
Teneema Kuriakose, Si Ming Man, R K Subbarao Malireddi, Rajendra Karki, Sannula Kesavardhana, David E Place, Geoffrey Neale, Peter Vogel, Thirumala-Devi Kanneganti
The interferon (IFN)-inducible protein Z-DNA binding protein 1 [ZBP1; also known as DNA-dependent activator of IFN regulatory factors (DAI) and DLM-1] was identified as a double-stranded DNA sensor, which instigates innate immune responses. However, this classification has been disputed, and whether ZBP1 functions as a pathogen sensor during an infection has remained unknown. We demonstrated ZBP1-mediated sensing of the influenza A virus (IAV) proteins NP and PB1, triggering cell death and inflammatory responses via the receptor-interacting protein kinase 1 (RIPK1)-RIPK3-caspase-8 axis...
August 12, 2016: Science Immunology
https://www.readbyqxmd.com/read/28782622/banxia-houpu-decoction-restores-glucose-intolerance-in-cums-rats-through-improvement-of-insulin-signaling-and-suppression-of-nlrp3-inflammasome-activation-in-liver-and-brain
#8
Ke-Ke Jia, Yan-Jing Zheng, Yan-Xiu Zhang, Jia-Hui Liu, Rui-Qing Jiao, Ying Pan, Ling-Dong Kong
ETHNOPHARMACOLOGICAL RELEVANCE: Banxia-houpu decoction is a famous formula in traditional Chinese medicine (TCM) with the powerful anti-depressant activity. AIM OF THE STUDY: This study aimed to investigate the effect of Banxia-houpu decoction on glucose intolerance associated with anhedonia in chronic unpredictable mild stress (CUMS) rats, then to explore its underlying pharmacological mechanisms. MATERIALS AND METHODS: After 6-week CUMS procedure, male Wistar rats were given Banxia-houpu decoction (3...
August 4, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28769794/lack-of-the-nlrp3-inflammasome-improves-mice-recovery-following-traumatic-brain-injury
#9
Natasha Irrera, Gabriele Pizzino, Margherita Calò, Giovanni Pallio, Federica Mannino, Fausto Famà, Vincenzo Arcoraci, Vincenzo Fodale, Antonio David, Cosentino Francesca, Letteria Minutoli, Emanuela Mazzon, Placido Bramanti, Francesco Squadrito, Domenica Altavilla, Alessandra Bitto
Treatment for traumatic brain injury (TBI) remains elusive despite compelling evidence from animal models for a variety of therapeutic targets. The activation of the NLRP3 (Nucleotide-binding oligomerization domain-like receptor family pyrin domain-containing 3) inflammasome has been proposed as key point in the brain damage associated with TBI. NLRP3 was tested as potential target for reducing neuronal loss and promoting functional recovery in a mouse model of TBI. Male NLRP3(-/-) (n = 20) and wild type (n = 27) mice were used...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28752408/the-nlrp3-inflammasome-an-important-driver-of-neuroinflammation-in-hemorrhagic-stroke
#10
REVIEW
Shao-Jun Yang, Gao-Feng Shao, Jiang-Li Chen, Jie Gong
Hemorrhagic stroke is a devastating clinical event with no effective medical treatment. Neuroinflammation, which follows a hemorrhagic stroke, is an important element that involves both acute brain injury and subsequent brain rehabilitation. Therefore, delineating the key inflammatory mediators and deciphering their pathophysiological roles in hemorrhagic strokes is of great importance in the development of novel therapeutic targets for this disease. The NOD-like receptor family pyrin domain-containing 3 (NLRP3) inflammasome is a multi-protein complex that is localized within the cytoplasm...
July 27, 2017: Cellular and Molecular Neurobiology
https://www.readbyqxmd.com/read/28740332/a-protective-role-of-glibenclamide-in-inflammation-associated-injury
#11
REVIEW
Gensheng Zhang, Xiuhui Lin, Shufang Zhang, Huiqing Xiu, Chuli Pan, Wei Cui
Glibenclamide is the most widely used sulfonylurea drug for the treatment of type 2 diabetes mellitus (DM). Recent studies have suggested that glibenclamide reduced adverse neuroinflammation and improved behavioral outcomes following central nervous system (CNS) injury. We reviewed glibenclamide's anti-inflammatory effects: abundant evidences have shown that glibenclamide exerted an anti-inflammatory effect in respiratory, digestive, urological, cardiological, and CNS diseases, as well as in ischemia-reperfusion injury...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/28740109/hypoxia-ameliorates-intestinal-inflammation-through-nlrp3-mtor-downregulation-and-autophagy-activation
#12
Jesus Cosin-Roger, Simona Simmen, Hassan Melhem, Kirstin Atrott, Isabelle Frey-Wagner, Martin Hausmann, Cheryl de Vallière, Marianne R Spalinger, Patrick Spielmann, Roland H Wenger, Jonas Zeitz, Stephan R Vavricka, Gerhard Rogler, Pedro A Ruiz
Hypoxia regulates autophagy and nucleotide-binding oligomerization domain receptor, pyrin domain containing (NLRP)3, two innate immune mechanisms linked by mutual regulation and associated to IBD. Here we show that hypoxia ameliorates inflammation during the development of colitis by modulating autophagy and mammalian target of rapamycin (mTOR)/NLRP3 pathway. Hypoxia significantly reduces tumor necrosis factor α, interleukin (IL)-6 and NLRP3 expression, and increases the turnover of the autophagy protein p62 in colon biopsies of Crohn's disease patients, and in samples from dextran sulfate sodium-treated mice and Il-10 (-/-) mice...
July 24, 2017: Nature Communications
https://www.readbyqxmd.com/read/28733143/mechanisms-of-nlrp1-mediated-autoinflammatory-disease-in-humans-and-mice
#13
REVIEW
Chien-Hsiung Yu, Jonas Moecking, Matthias Geyer, Seth L Masters
NLRP1 was the first NOD-like receptor described to form an inflammasome, recruiting ASC to activate caspase-1, which processes interleukin-1β and interleukin-18 to their active form. A wealth of new genetic information has now redefined our understanding of this innate immune sensor. Specifically, rare loss-of-function variants in the N-terminal pyrin domain indicate that this part of NLRP1 is autoinhibitory and normally acts to prevent a familial autoinflammatory skin disease associated with cancer. In the absence of a ligand to trigger human NLRP1, these mutations have now confirmed the requirement of NLRP1 autolytic cleavage within the FIIND domain, which had previously been implicated in NLRP1 activation...
July 19, 2017: Journal of Molecular Biology
https://www.readbyqxmd.com/read/28710289/nutritional-modulation-of-metabolic-inflammation
#14
REVIEW
Anna M Kirwan, Yvonne M Lenighan, Marcella E O'Reilly, Fiona C McGillicuddy, Helen M Roche
Metabolic inflammation is a very topical area of research, wherein aberrations in metabolic and inflammatory pathways probably contribute to atherosclerosis, insulin resistance (IR) and type 2 diabetes. Metabolic insults arising from obesity promote inflammation, which in turn impedes insulin signalling and reverse cholesterol transport (RCT). Key cells in the process are metabolically activated macrophages, which up-regulate both pro- and anti-inflammatory pathways in response to lipid spillover from adipocytes...
August 15, 2017: Biochemical Society Transactions
https://www.readbyqxmd.com/read/28705721/characterization-of-nlrp3-like-gene-from-apostichopus-japonicus-provides-new-evidence-on-inflammation-response-in-invertebrates
#15
Zhimeng Lv, Zhixin Wei, Zhen Zhang, Chenghua Li, Yina Shao, Weiwei Zhang, Xuelin Zhao, Ye Li, Xuemei Duan, Jinbo Xiong
Inflammatory/defensive response after pathogen invasion is considered a local defense reaction in vertebrates. Inflammation response in Apostichopus japonicus was hardly determined due to scarce information available for nucleotide binding domain-like receptor family, pyrin domain-containing (NLRP) family. In the present study, invertebrate NLRP homologue was identified from A. japonicus (designated as AjNLRP3-like) by rapid amplification of cDNA ends. Full-length cDNA of AjNLRP3-like measured 2970 bp with 2265 bp open reading frame encoding a 754-amino acid (aa) residue protein...
July 10, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28701426/dynamics-of-in-vivo-asc-speck-formation
#16
Paola Kuri, Nicole L Schieber, Thomas Thumberger, Joachim Wittbrodt, Yannick Schwab, Maria Leptin
Activated danger or pathogen sensors trigger assembly of the inflammasome adaptor ASC into specks, large signaling platforms considered hallmarks of inflammasome activation. Because a lack of in vivo tools has prevented the study of endogenous ASC dynamics, we generated a live ASC reporter through CRISPR/Cas9 tagging of the endogenous gene in zebrafish. We see strong ASC expression in the skin and other epithelia that act as barriers to insult. A toxic stimulus triggered speck formation and rapid pyroptosis in keratinocytes in vivo...
July 12, 2017: Journal of Cell Biology
https://www.readbyqxmd.com/read/28691886/salivary-levels-of-nlrp3-inflammasome-related-proteins-as-potential-biomarkers-of-periodontal-clinical-status
#17
Diana M Isaza-Guzmán, Verónica M Medina-Piedrahíta, Carolina Gutiérrez-Henao, Sergio I Tobón-Arroyave
BACKGROUND: Emerging evidence suggests that the activation of inflammasomes plays a central mechanism in the pathogenesis of periodontitis. This study aimed to compare the salivary levels of nod-like receptor family pyrin domain containing protein 3 (NLRP3), apoptosis-associated speck-like protein containing a caspase recruitment domain (ASC), cysteine aspartase-1 (caspase-1), and interleukin-1 beta (IL-1β) from individuals with aggressive (AgP) or chronic periodontitis (CP) and healthy controls (HC), as well as elucidate its association with the periodontal clinical status...
July 10, 2017: Journal of Periodontology
https://www.readbyqxmd.com/read/28690860/the-detection-of-a-novel-insertion-mutation-in-exon-2-of-the-mefv-gene-associated-with-familial-mediterranean-fever-in-a-moroccan-family
#18
Touhami Mejtoute, Hanane Sayel, Jamila El-Akhal, Fatima Z Moufid, Laila Bouguenouch, Ihssane El Bouchikhi, Mustapha Hida, Driss Couissi, Karim Ouldim
Familial Mediterranean fever (FMF) is a hereditary autoinflammatory disease that is inherited in an autosomal recessive manner and is caused by mutations in the MEFV gene. As the name indicates, FMF occurs within families and is more common in individuals of Mediterranean descent than in persons of any other ethnicity. To date, 314 mutations have been reported. We studied a Moroccan family with a total of five members, including a mother who was presenting with symptoms of FMF, while her four children remained asymptomatic...
2017: Human Genome Variation
https://www.readbyqxmd.com/read/28687781/p2x7-receptor-antagonism-modulates-il-1%C3%AE-and-mmp9-in-human-atherosclerotic-vessels
#19
Maria Lombardi, Maria Elena Mantione, Domenico Baccellieri, David Ferrara, Renata Castellano, Roberto Chiesa, Ottavio Alfieri, Chiara Foglieni
In atherosclerosis, matrix metallopeptidases (MMPs) contribute to plaque rupture through weakening of the fibrous cap. Pleiotropic P2X purinoceptor 7 (P2X7), expressed in the carotid plaque (PL), is involved in interleukin 1 beta (IL-1β) release that may influence MMP9 generation, thus their possible modulation through acting on P2X7 was investigated. P2X7-related machinery was characterized and the effects of P2X7 antagonists (A740003, KN62) and MMPs inhibitors (Batimastat, Ro28-2653) were studied in ex-vivo tissue cultures of human PL's vs...
July 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28686751/muckle-wells-syndrome-in-the-setting-of-basal-cell-nevus-syndrome
#20
Marie Wagener, Joseph W Laskas, Stephen Purcell, Tanya Ermolovich
Muckle-Wells syndrome (MWS) is a rare disorder inherited in an autosomal-dominant fashion that belongs to a group of hereditary periodic fever syndromes. It specifically belongs to the cryopyrin-associated periodic syndromes (CAPSs) in which there is a mutation in the NLRP3 (NLR family pyrin domain containing 3) gene that leads to overproduction of IL-1β, the source of the multisystem inflammatory symptoms. Muckle-Wells syndrome is characterized by a recurrent urticarial eruption that is associated with episodic fever, myalgia, arthralgia, malaise, progressive sensorineural hearing loss, and amyloid nephropathy (the most severe complication)...
June 2017: Cutis; Cutaneous Medicine for the Practitioner
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