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Inflammation-related collagen fibril destruction contributes to temporomandibular joint disc displacement via nuclear factorkappa B activation
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作者 Shengjie Cui Yanning Guo +8 位作者 Yu Fu Ting Zhang Jieni Zhang Yehua Gan Yanheng Zhou Yan Gu Eileen Gentleman Yan Liu Xuedong Wang 《International Journal of Oral Science》 2025年第2期221-232,共12页
Temporomandibular joint(TMJ)disc displacement is one of the most significant subtypes of temporomandibular joint disorders,but its etiology and mechanism are poorly understood.In this study,we elucidated the mechanism... Temporomandibular joint(TMJ)disc displacement is one of the most significant subtypes of temporomandibular joint disorders,but its etiology and mechanism are poorly understood.In this study,we elucidated the mechanisms by which destruction of inflamed collagen fibrils induces alterations in the mechanical properties and positioning of the TMJ disc.By constructing a rat model of TMJ arthritis,we observed anteriorly dislocated TMJ discs with aggravated deformity in vivo from five weeks to six months after a local injection of Freund’s complete adjuvant.By mimicking inflammatory conditions with interleukin-1 beta in vitro,we observed enhanced expression of collagen-synthesis markers in primary TMJ disc cells cultured in a conventional two-dimensional environment.In contrast,three-dimensional(3D)-cultivated disc cell sheets demonstrated the disordered assembly of inflamed collagen fibrils,inappropriate arrangement,and decreased Young’s modulus.Mechanistically,inflammation-related activation of the nuclear factor kappa-B(NF-κB)pathway occurs during the progression of TMJ arthritis.NF-κB inhibition reduced the collagen fibril destruction in the inflamed disc cell sheets in vitro,and early NF-κB blockade alleviated collagen degeneration and dislocation of the TMJ discs in vivo.Therefore,the NF-κB pathway participates in the collagen remodeling in inflamed TMJ discs,offering a potential therapeutic target for disc displacement. 展开更多
关键词 temporomandibular joint disc displacement destruction inflamed collagen fibrils rat model anteriorly dislocated tmj discs collagen fibril destruction temporomandibular joint inflamMATION arthritis
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The mysterious relation between inflammation and prostate cancer 被引量:3
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作者 Yu Zhao 《国际感染病学(电子版)》 CAS 2017年第1期8-12,共5页
Recent studies showed that inflammation is a critical cause for initiation and/or development of many cancers. In prostate cancer(PC), the inflammatory cells usually populate an immune-competent organ. This inflammato... Recent studies showed that inflammation is a critical cause for initiation and/or development of many cancers. In prostate cancer(PC), the inflammatory cells usually populate an immune-competent organ. This inflammatory organ can be involved in the initiation and progression of PC. Here, we mainly focus on the role of inflammation in the PC and progression of castration-resistant PC(CRPC). Moreover, we summarize the roles of inflammation factors(such as chemokines and cytokines) in PC and CRPC. Taken together, this review gives an insight into therapy for PC and CRPC through anti-inflammation. 展开更多
关键词 inflam M ATION PROSTATE cacner CRPC inflam M ATION factors
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Microbiota and the gut-liver axis:Bacterial translocation,inflammation and infection in cirrhosis 被引量:49
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作者 Valerio Giannelli Vincenza Di Gregorio +4 位作者 Valerio Iebba Michela Giusto Serena Schippa Manuela Merli Ulrich Thalheimer 《World Journal of Gastroenterology》 SCIE CAS 2014年第45期16795-16810,共16页
Liver disease is associated with qualitative and quantitative changes in the intestinal microbiota. In cirrhotic patients the alteration in gut microbiota is characterized by an overgrowth of potentially pathogenic ba... Liver disease is associated with qualitative and quantitative changes in the intestinal microbiota. In cirrhotic patients the alteration in gut microbiota is characterized by an overgrowth of potentially pathogenic bacteria (i.e., gram negative species) and a decrease in autochthonous familiae. Here we summarize the available literature on the risk of gut dysbiosis in liver cirrhosis and its clinical consequences. We therefore described the features of the complex interaction between gut microbiota and cirrhotic host, the so called &#x0201c;gut-liver axis&#x0201d;, with a particular attention to the acquired risk of bacterial translocation, systemic inflammation and the relationship with systemic infections in the cirrhotic patient. Such knowledge might help to develop novel and innovative strategies for the prevention and therapy of gut dysbiosis and its complication in liver cirrhosis. 展开更多
关键词 Dysbiosis CIRRHOSIS Bacterial translocation inflamMATION INFECTION Bacterial overgrowth Rifaximine LACTULOSE LIVER GUT Portal hypertension
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Melatonin alleviates intervertebral disc degeneration by disrupting the IL-1β/NF-κB-NLRP3 inflammasome positive feedback loop 被引量:26
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作者 Fan Chen Guowei Jiang +8 位作者 Hui Liu Zemin Li Yuxin Pei Hua Wang Hehai Pan Haowen Cui Jun Long Jianru Wang Zhaomin Zheng 《Bone Research》 SCIE CAS CSCD 2020年第2期169-181,共13页
The inflammatory response is induced by the overexpression of inflammatory cytokines, mainly interleukin(IL)-1β, and is one of the main causes of intervertebral disc degeneration(IVDD). NLR pyrin domain containing 3(... The inflammatory response is induced by the overexpression of inflammatory cytokines, mainly interleukin(IL)-1β, and is one of the main causes of intervertebral disc degeneration(IVDD). NLR pyrin domain containing 3(NLRP3) inflammasome activation is an important source of IL-1β. As an anti-inflammatory neuroendocrine hormone, melatonin plays various roles in different pathophysiological conditions. However, its roles in IVDD are still not well understood and require more examination. First, we demonstrated that melatonin delayed the progression of IVDD and relieved IVDD-related low back pain in a rat needle puncture IVDD model;moreover, NLRP3 inflammasome activation(NLRP3, p20, and IL-1β levels) was significantly upregulated in severely degenerated human discs and a rat IVDD model. Subsequently, an IL-1β/NF-κB-NLRP3 inflammasome activation positive feedback loop was found in nucleus pulposus(NP) cells that were treated with IL-1β. In these cells, expression of NLRP3 and p20 was significantly increased, NF-κB signaling was involved in this regulation, and mitochondrial reactive oxygen species(mt ROS)production increased. Furthermore, we found that melatonin disrupted the IL-1β/NF-κB-NLRP3 inflammasome activation positive feedback loop in vitro and in vivo. Melatonin treatment decreased NLRP3, p20, and IL-1β levels by inhibiting NF-κB signaling and downregulating mt ROS production. Finally, we showed that melatonin mediated the disruption of the positive feedback loop of IL-1β in vivo. In this study, we showed for the first time that IL-1β promotes its own expression by upregulating NLRP3 inflammasome activation. Furthermore, melatonin disrupts the IL-1β positive feedback loop and may be a potential therapeutic agent for IVDD. 展开更多
关键词 NLRP3 DEGENERATION inflam
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Psychosocial issues in evidence-based guidelines on inflammatory bowel diseases: A review 被引量:14
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作者 Winfried Huser Gabriele Moser +1 位作者 Petra Klose Antonina Mikocka-Walus 《World Journal of Gastroenterology》 SCIE CAS 2014年第13期3663-3671,共9页
AIM: To study statements and recommendations on psychosocial issues as presented in international evidence-based guidelines on the management of inflammatory bowel diseases (IBD).
关键词 ANXIETY DEPRESSION GUIDELINES inflammatory bowel diseases PSYCHOLOGICAL PSYCHOTHERAPY SMOKING Stress
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Clinical characteristics and treatment of inflammatory bowel disease: A comparison of Eastern and Western perspectives 被引量:18
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作者 Soo Jung Park Won Ho Kim Jae Hee Cheon 《World Journal of Gastroenterology》 SCIE CAS 2014年第33期11525-11537,共13页
Inflammatory bowel disease(IBD) is a chronic, relapsing intestinal inflammatory disorder with unidentified causes. Both environmental factors and genetic aspects are believed to be crucial to the pathogenesis of IBD. ... Inflammatory bowel disease(IBD) is a chronic, relapsing intestinal inflammatory disorder with unidentified causes. Both environmental factors and genetic aspects are believed to be crucial to the pathogenesis of IBD. The incidence and prevalence of IBD have recently been increasing throughout Asia, presumably secondary to environmental changes. This increasing trend in IBD epidemiology necessitates specific health care planning and education in Asia. To this end, we must gain a precise understanding of the distinctive clinical and therapeutic characteristics of Asian patients with IBD. The phenotypes of IBD reportedly differ considerably between Asians and Caucasians. Thus, use of the same management strategies for these different populations may not be appropriate. Moreover, investigation of the Asian-specific clinical aspects of IBD offers the possibility of identifying causative factors in the pathogenesis of IBD in this geographical area. Accordingly, this review summarizes current knowledge of the phenotypic manifestations and management practices of patients with IBD, with a special focus on a comparisonof Eastern and Western perspectives. 展开更多
关键词 Crohn's disease Ulcerative colitis inflam-matory bowel disease Clinical characteristics Treat-ment ASIA
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Toll-like receptor-mediated signaling cascade as a regulator of the inflammation network during alcoholic liver disease 被引量:5
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作者 Sara Ceccarelli Valerio Nobili Anna Alisi 《World Journal of Gastroenterology》 SCIE CAS 2014年第44期16443-16451,共9页
Chronic abuse of alcohol leads to various histological abnormalities in the liver. These are conditions collectively known as alcoholic liver disease(ALD). Currently, ALD is considered to be one of the major causes of... Chronic abuse of alcohol leads to various histological abnormalities in the liver. These are conditions collectively known as alcoholic liver disease(ALD). Currently, ALD is considered to be one of the major causes of death worldwide. An impaired intestinal barrier with related endotoxemia is among the various pathogenetic factors. This is mainly characterized by circulating levels of lipopolysaccharide(LPS), considered critical for the onset of intra-hepatic inflammation. This in turn promotes hepatocellular damage and fibrosis in ALD. Elevated levels of LPS exert their effects by binding to Toll-like receptors(TLRs) which are expressed by all liver-resident cells. The activation of TLR signaling triggers an overproduction and release of some cytokines, which promote an autocatalytic cascade of other proinflammatory signals. In this review, we provide an overview of the mechanisms that sustain LPS-mediated activation of TLR signaling, reporting current experimental and clinical evidence of its role during inflammation in ALD. 展开更多
关键词 Alcoholic liver disease Toll-like receptors inflamMATION CIRRHOSIS Nuclear factor-κ B CYTOKINES
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Anti-inflammatory activity of the leaf extacts of Gendarussa vulgaris Nees 被引量:4
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作者 TK Mohamed Saleem AK Azeem +3 位作者 C Dilip C Sankar NV Prasanth R Duraisami 《Asian Pacific Journal of Tropical Biomedicine》 SCIE CAS 2011年第2期147-149,共3页
Objective:To evaluate the anti-inflammatory property of the leaf exacts of Gendarussa vulgaris(G.vulgarix) Nees.Methods:G.vulgarix Nees of the family Apocynaceae is a medium sized tree grown in semishade or no shade a... Objective:To evaluate the anti-inflammatory property of the leaf exacts of Gendarussa vulgaris(G.vulgarix) Nees.Methods:G.vulgarix Nees of the family Apocynaceae is a medium sized tree grown in semishade or no shade and is common in the Ernad and Nilambur taluks of Kerala. Various parts of this plant have been used in the treatment of ulcers,sores,inflammation, dyspepsia,healing of wounds,etc.The present study aimed at the evaluation of anti-inflammatory property of the aqueous and alcoholic extracts of the leaves by both in vitro and in vivo methods. In vitro method was estimated by human red blood cell membrane stabilisation(HRBC) method and in vivo method was estimated on the carrageenan induced paw oedima.Results:Both the methods showed significant anti-inflammatory property of the different extracts tested. Conclusions:The alcoholic extract at a concentration of 300 mg/mL showed potent activity on comparing with the standard drug diclofenac sodium. 展开更多
关键词 Gendarussa VULGARIS Anti-inflamation HRBC CARRAGEENAN
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Detection of Adhesion Molecules on Inflamed Macrophages at Early-Stage Using SERS Probe Gold Nanorods 被引量:2
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作者 Dakrong Pissuwan Yusuke Hattori 《Nano-Micro Letters》 SCIE EI CAS 2017年第1期113-121,共9页
In recent years, it has been shown that inflammatory biomarkers can be used as an effective signal for disease diagnoses. The early detection of these signals provides useful information that could prevent the occurre... In recent years, it has been shown that inflammatory biomarkers can be used as an effective signal for disease diagnoses. The early detection of these signals provides useful information that could prevent the occurrence of severe diseases. Here, we employed surface-enhanced Raman scattering(SERS) probe gold nanorods(GNRs) as a tool for the early detection of inflammatory molecules in inflamed cells. A murine macrophage cell line(Raw264.7) stimulated with lipopolysaccharide(LPS) was used as a model in this study. The prepared SERS probe GNRs containing 4-mercaptobenzoic acid as a Raman reporter to generate SERS signals were used for detection of intracellular adhesion molecule-1(ICAM-1) in macrophages after treatment with LPS for varying lengths of time. Our results show that SERS probe GNRs could detect significant differences in the expression of ICAM-1 molecules in LPS-treated macrophages compared to those in untreated macrophages after only 1 h of LPS treatment. In contrast, when using fluorescent labeling or enzyme-linked immunosorbent assays(ELISA) to detect ICAM-1, significant differences between inflamed and un-inflamed macrophages were not seen until the cells had been treated with LPS for 5 h. These results indicate that our SERS probe GNRs provide a higher sensitivity for detecting biomarker molecules in inflamed macrophages than the conventional fluorescence and ELISA techniques, and could therefore be useful as a potential diagnostic tool for managing disease risk. 展开更多
关键词 Gold nanorod SERS inflamed cell MACROPHAGE ICAM-1
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Correlation of periodontal inflamed surface area with glycemic status in controlled and uncontrolled type 2 diabetes mellitus 被引量:3
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作者 Krishna Anil Rosamma Joseph Vadakkekuttical +1 位作者 Chandni Radhakrishnan Fairoz Cheriyalingal Parambath 《World Journal of Clinical Cases》 SCIE 2021年第36期11300-11310,共11页
BACKGROUND The bidirectional link between periodontitis and diabetes mellitus(DM)has been established.Periodontitis causes systemic inflammatory burden through inflammatory mediators.The currently utilized tools[clini... BACKGROUND The bidirectional link between periodontitis and diabetes mellitus(DM)has been established.Periodontitis causes systemic inflammatory burden through inflammatory mediators.The currently utilized tools[clinical attachment loss(CAL)and probing pocket depth(PPD)]are linear measurements,that do not exactly quantify the inflammatory burden of periodontitis.Periodontal inflamed surface area(PISA)quantifies the surface area of bleeding pocket epithelium and estimates the inflammatory burden.Studies relating to the periodontal status of diabetic patients with and without microvascular complications are scarce.This study assessed the proportion of periodontitis and correlation of PISA with glycemic status in controlled,uncontrolled type 2 DM(T2DM)with and without microvascular complications.AIM To assess the proportion of periodontitis and correlation of PISA with glycemic status in controlled,and uncontrolled T2DM with and without microvascular complications.METHODS This study comprised 180 T2DM patients.Based on glycated hemoglobin(HbA1c)levels,they were grouped into:(1)Controlled T2DMgroup:(HbA1c≤7%);(2)Uncontrolled T2DM group:(HbA1c>7%)without microvascular complications;and(3)Uncontrolled T2DM group:(HbA1c>7%)with microvascular complications.Each group comprised 60 patients.All patients were assessed for periodontal parameters(Bleeding on Probing,PPD,CAL,Oral hygiene index simplified and PISA),and systemic parameters(HbA1c,fasting plasma glucose and post prandial plasma glucose).RESULTS The proportion of periodontitis among controlled T2DM group,uncontrolled T2DM group without microvascular complications,uncontrolled T2DM group with micro-vascular complications was 75%,93.4%and 96.6%respectively.Extent and severity of periodontitis were high in the uncontrolled T2DM group.A significant positive correlation was found between PISA and HbA1c among all patients(r=0.393,P<0.001).The dose–response relationship between PISA and HbA1c was observed.An increase of PISA with 168 mm^(2) was associated with a 1.0%increase of HbA1c.CONCLUSION High proportion and severity of periodontitis,and increased inflamed surface area in uncontrolled T2DM may have contributed to the poor glycemic control and microvascular complications. 展开更多
关键词 Type 2 diabetes mellitus PERIODONTITIS Periodontal inflamed surface area Glycated Hb DIABETES
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Correlation of periodontal inflamed surface area with glycated hemoglobin,interleukin-6 and lipoprotein(a)in type 2 diabetes with retinopathy 被引量:3
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作者 Nusreen Jamal Thazhe Poyil Rosamma Joseph Vadakkekuttical Chandni Radhakrishnan 《World Journal of Diabetes》 SCIE 2024年第4期686-696,共11页
BACKGROUND The two-way relationship between periodontitis and type 2 diabetes mellitus(T2DM)is well established.Prolonged hyperglycemia contributes to increased periodontal destruction and severe periodontitis,accentu... BACKGROUND The two-way relationship between periodontitis and type 2 diabetes mellitus(T2DM)is well established.Prolonged hyperglycemia contributes to increased periodontal destruction and severe periodontitis,accentuating diabetic complications.An inflammatory link exists between diabetic retinopathy(DR)and periodontitis,but the studies regarding this association and the role of lipoprotein(a)[Lp(a)]and interleukin-6(IL-6)in these conditions are scarce in the literature.AIM To determine the correlation of periodontal inflamed surface area(PISA)with glycated Hb(HbA1c),serum IL-6 and Lp(a)in T2DM subjects with retinopathy.METHODS This cross-sectional study comprised 40 T2DM subjects with DR and 40 T2DM subjects without DR.All subjects were assessed for periodontal parameters[bleeding on probing(BOP),probing pocket depth,clinical attachment loss(CAL),oral hygiene index-simplified,plaque index(PI)and PISA],and systemic parameters[HbA1c,fasting plasma glucose and postprandial plasma glucose,fasting lipid profile,serum IL-6 and serum Lp(a)].RESULTS The proportion of periodontitis in T2DM with and without DR was 47.5%and 27.5%respectively.Severity of periodontitis,CAL,PISA,IL-6 and Lp(a)were higher in T2DM with DR group compared to T2DM without DR group.Significant difference was observed in the mean percentage of sites with BOP between T2DM with DR(69%)and T2DM without DR(41%),but there was no significant difference in PI(P>0.05).HbA1c was positively correlated with CAL(r=0.351,P=0.001),and PISA(r=0.393,P≤0.001)in study subjects.A positive correlation was found between PISA and IL-6(r=0.651,P<0.0001);PISA and Lp(a)(r=0.59,P<0.001);CAL and IL-6(r=0.527,P<0.0001)and CAL and Lp(a)(r=0.631,P<0.001)among study subjects.CONCLUSION Despite both groups having poor glycemic control and comparable plaque scores,the periodontal parameters were higher in DR as compared to T2DM without DR.Since a bidirectional link exists between periodontitis and DM,the presence of DR may have contributed to the severity of periodontal destruction and periodontitis may have influenced the progression of DR. 展开更多
关键词 Type 2 diabetes mellitus PERIODONTITIS Periodontal inflamed surface Area Glycated Hb Diabetic retinopathy
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NLRP3 inflammasome plays a vital role in the pathogenesis of age-related diseases in the eye and brain 被引量:1
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作者 Jack Jonathan Maran Odunayo Omolola Mugisho 《Neural Regeneration Research》 SCIE CAS CSCD 2024年第7期1425-1426,共2页
Key points:With aging,there is increased nucleotide-binding oligomerization domain-(NOD-)like receptor(NLR) protein-3(NLRP3) activation in neural and ocular tissues.Activation of the NLRP3 inflammasome appears to be a... Key points:With aging,there is increased nucleotide-binding oligomerization domain-(NOD-)like receptor(NLR) protein-3(NLRP3) activation in neural and ocular tissues.Activation of the NLRP3 inflammasome appears to be a common denominator in the pathogenesis of age-related diseases of the eye and brain.Pharmacological inhibition of the NLRP3 inflammasome may be a potent therapy for preventing the development and progression of age-related eye and brain diseases. 展开更多
关键词 NLRP3 PATHOGENESIS inflam
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Utility of serum TNF-a,infliximab trough level,and antibody titers in inflammatory bowel disease 被引量:1
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作者 va Pallagi-Kunstár Klaudia Farkas +7 位作者 Zoltán Szepes Ferenc Nagy Mónika Szucs Róbert Kui Rolland Gyulai Anita Bálint Tibor Wittmann Tamás Molnár 《World Journal of Gastroenterology》 SCIE CAS 2014年第17期5031-5035,共5页
AIM:To assess tumor necrosis factor-a(TNF-a),infliximab(IFX)concentrations,and antibodies against IFX molecules in patients with inflammatory bowel disease(IBD)who develop loss of response,side effects,or allergic rea... AIM:To assess tumor necrosis factor-a(TNF-a),infliximab(IFX)concentrations,and antibodies against IFX molecules in patients with inflammatory bowel disease(IBD)who develop loss of response,side effects,or allergic reaction during anti TNF-a therapy.METHODS:Blood samples of 36 patients with response loss,side effects,or hypersensitivity to IFX therapy(Group?Ⅰ)and 31 patients in complete clinical remission(GroupⅡ)selected as a control group were collected to measure trough serum TNF-a level,IFX,and anti-IFX antibody(ATI)concentration.We examined the correlation between loss of response,the development of side effects or hypersensitivity,and serum TNF-a,IFX trough levels,and ATI concentrations.RESULTS:The serum TNF-a level was shown to be correlated with the presence of ATI;ATI positivity was significantly correlated with low trough levels of IFX.ATIs were detected in 25%of IBD patients with loss of response,side effects,or hypersensitivity,however no association was revealed between these patients and antibody positivity or lower serum IFX levels.Previous use of IFX correlated with the development of ATI,although concomitant immunosuppression did not have any impact on them.CONCLUSION:On the basis of the present study,we suggest that the simultaneous measurement of serum TNF-a level,serum anti TNF-a concentration,and antibodies against anti TNF-a may further help to optimize the therapy in critical situations. 展开更多
关键词 Tumor necrosis factor-a INFLIXIMAB ANTIBODY inflammatory bowel disease
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Infertility in men with inflammatory bowel disease 被引量:2
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作者 Takeshi Shin Hiroshi Okada 《World Journal of Gastrointestinal Pharmacology and Therapeutics》 CAS 2016年第3期361-369,共9页
Inflammatory bowel disease (IBD) predominantly affects young adults. Fertility-related issues are therefore important in the management of patients with IBD. However, relatively modest attention has been paid to repro... Inflammatory bowel disease (IBD) predominantly affects young adults. Fertility-related issues are therefore important in the management of patients with IBD. However, relatively modest attention has been paid to reproductive issues faced by men with IBD. To investigate the effects of IBD and its treatment on male fertility, we reviewed the current literature using a systematic search for published studies. A PubMed search were performed using the main search terms &ldquo;IBD AND male infertility&rdquo;, &ldquo;Crohn&rsquo;s disease AND male infertility&rdquo;, &ldquo;ulcerative colitis AND male infertility&rdquo;. References in review articles were used if relevant. We noted that active inflammation, poor nutrition, alcohol use, smoking, medications, and surgery may cause infertility in men with IBD. In surgery such as proctocolectomy with ileal pouch-anal anastomosis, rectal incision seems to be associated with sexual dysfunction. Of the medications used for IBD, sulfasalazine reversibly reduces male fertility. No other medications appear to affect male fertility significantly, although small studies suggested some adverse effects. There are limited data on the effects of drugs for IBD on male fertility and pregnancy outcomes; however, patients should be informed of the possible effects of paternal drug exposure. This review provides information on fertility-related issues in men with IBD and discusses treatment options. 展开更多
关键词 Crohn&rsquo s disease INFERTILITY inflammatory bowel disease MALE Ulcerative colitis
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Caspase-11 mediated inflammasome activation in macrophages by systemic infection of A.actinomycetemcomitans exacerbates arthritis
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作者 Tokuju Okano Hiroshi Ashida +10 位作者 Noriko Komatsu Masayuki Tsukasaki Tamako Iida Marie Iwasawa Yuto Takahashi Yasuo Takeuchi Takanori Iwata Miwa Sasai Masahiro Yamamoto Hiroshi Takayanagi Toshihiko Suzuki 《International Journal of Oral Science》 SCIE CAS CSCD 2024年第3期499-514,共16页
Clinical studies have shown that Aggregatibacter actinomycetemcomitans(A.actinomycetemcomitans)is associated with aggressive periodontitis and can potentially trigger or exacerbate rheumatoid arthritis(RA).However,the... Clinical studies have shown that Aggregatibacter actinomycetemcomitans(A.actinomycetemcomitans)is associated with aggressive periodontitis and can potentially trigger or exacerbate rheumatoid arthritis(RA).However,the mechanism is poorly understood.Here,we show that systemic infection with A.actinomycetemcomitans triggers the progression of arthritis in mice anti-collagen antibody-induced arthritis(CAIA)model following IL-1βsecretion and cell infiltration in paws in a manner that is dependent on caspase-11-mediated inflammasome activation in macrophages.The administration of polymyxin B(PMB),chloroquine,and anti-CD11b antibody suppressed inflammasome activation in macrophages and arthritis in mice,suggesting that the recognition of lipopolysaccharide(LPS)in the cytosol after bacterial degradation by lysosomes and invasion via CD11b are needed to trigger arthritis following inflammasome activation in macrophages.These data reveal that the inhibition of caspase-11-mediated inflammasome activation potentiates aggravation of RA induced by infection with A.actinomycetemcomitans.This work highlights how RA can be progressed by inflammasome activation as a result of periodontitis-associated bacterial infection and discusses the mechanism of inflammasome activation in response to infection with A.actinomycetemcomitans. 展开更多
关键词 CD11B inflam INFECTION
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Imperatorin alleviates Aβ-induced spatial learning memory impairment and neuroinflam⁃mation in model mice of Alzheimer disease
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作者 WAN Hang-juan LUO Li +1 位作者 LIU Xin HE Wei 《中国药理学与毒理学杂志》 CAS 北大核心 2021年第9期642-643,共2页
OBJECTIVE To investigate the effects of imperatorin on the spatial learning memory impairment and neuroinflammation in model mice of Alzheimer disease(AD)induced by intracerebroventricular injection of Aβ1-42.METHODS... OBJECTIVE To investigate the effects of imperatorin on the spatial learning memory impairment and neuroinflammation in model mice of Alzheimer disease(AD)induced by intracerebroventricular injection of Aβ1-42.METHODS Mouse model of AD was established by injection of Aβ1-42 into the lateral ventricles.Im⁃peratorin(2.5 and 5.0 mg·kg-1,daily)was inject⁃ed by intraperitoneally 1 h after intracerebroven⁃tricular injection for 13 d.The effect of imperato⁃rin on the spatial learning and memory impair⁃ment was assessed by eight arm maze tests.The levels of cytokines TNF-α,IL-1β,IL-6,IL-18 and chemokines MCP-1 in mouse cortex and hip⁃pocampus were detected by ELISA.The protein expression of NF-κB P65,TLR4,MyD88,p-P38,p-ERK,and p-JNK were detected by Western blotting.RESULTS As compared with the AD model group,imperatorin treatment significantly attenuated Aβ1-42-induced spatial learning and memory impairment assessed by eight arm maze tests.In addition,imperatorin significantly reduced the levels of cytokines TNF-α,IL-1β,IL-6,IL-18 and chemokines MCP-1 in the cerebral cortex and hippocampus.Meanwhile,Western blotting results showed that imperatorin treat⁃ment significantly down-regulated the protein expression of NF-κB P65,TLR4,MyD88,p-P38,p-ERK,and p-JNK.CONCLUSION Imperatorin has neuroprotective effects in the Aβ1-42 induced AD model mice and its mechanism may be partially associated with the inhibition of inflam⁃matory response in the cortex and hippocampus. 展开更多
关键词 IMPERATORIN Alzheimer disease AΒ1-42 learning and memory impairment inflam⁃matory response
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The Simulation on Dynamic of Rotary Inertia and Engine’s Inflamer in Light Vehicle
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作者 Run Xu 《Journal of Mechanical Engineering Research》 2020年第2期1-6,共6页
According to formula we can simulate their driven force and acceleration.The mechanical formula is used to obtain dynamics is used to simulate.The driven force increases when torque increases and tire diameter decreas... According to formula we can simulate their driven force and acceleration.The mechanical formula is used to obtain dynamics is used to simulate.The driven force increases when torque increases and tire diameter decreases.We need torque to increase so this is our plan.Acceleration raises when torque raises and it reduces when its weight raises.With the decreasing of radius of road the centripetal acceleration is increasing in the condition of light vehicle.It is that it decreases sluggishly before 0.35m/s2 then it maintains a steep decline to 0.62m/s2 and at last becomes sluggish again.It is valued that the economical efficiency about consumed fuel under different power.In the time of 0.2hr the fuel inflamer inclines sharply first then turns stable.It is the smallest value.Beyond it the fuel maintains a high value all the time.The discharged pollution gas decreases with the decreasing initial temperature.The low initial temperature is good to fuel gas.Meantime the smallest incline range is 300~350K which explains that it is the most save one. 展开更多
关键词 SIMULATION DYNAMIC Car Rotary inertia Centripetal&circular acceleration Driven force TORQUE Consumed fuel Engine’s inflamer
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Egypt Inflamed
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《ChinAfrica》 2013年第9期2-2,共1页
Egypt is a river of tension in the wake of the anti-President Morsi demonstrators demanding his removal for abuse of power,leading to the army ousting the country's first democratically elected president in a July 3 ... Egypt is a river of tension in the wake of the anti-President Morsi demonstrators demanding his removal for abuse of power,leading to the army ousting the country's first democratically elected president in a July 3 military coup.The preceding violent days in early August saw Islamist President Morsi's supporters clashing with the country's police force in ongoing clashes that have already seen more than 1.000 lives lost,most of them Islamists and their supporters.The court decision to release former President Hosni Mubarak from prison may also inflame public anger. 展开更多
关键词 Egypt inflamed
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A20 attenuates oxidized self-DNA-mediated inflammation in acute kidney injury
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作者 Hanwen Li Yongyao Wu +12 位作者 Lisha Xiang Qing Zhao Lu Liu Zhixiong Zhu Weimin Lin Zhan Li Yang Yang Yiting Ze Lulu Zhang Ping Fu Yingqiang Guo Ping Zhang Bin Shao 《Signal Transduction and Targeted Therapy》 2025年第5期2941-2956,共16页
The ubiquitin-editing enzyme A20 is known to regulate inflammation and maintain homeostasis,but its role in self-DNA-mediated inflammation in acute kidney injury(AKI)is not well understood.Here,our study demonstrated ... The ubiquitin-editing enzyme A20 is known to regulate inflammation and maintain homeostasis,but its role in self-DNA-mediated inflammation in acute kidney injury(AKI)is not well understood.Here,our study demonstrated that oxidized self-DNA accumulates in the serum of AKI mice and patients.This oxidized self-DNA exacerbates the progression of AKI by activating the cGAS-STING pathway and NLRP3 inflammasome.While inhibition of the STING pathway only slightly attenuates AKI progression,suppression of NLRP3 inflammasome-mediated pyroptosis significantly alleviates AKI progression and improves the survival of AKI mice.Subsequently,we found that Tnfaip3(encoding A20)is significantly upregulated following oxidized self-DNA treatment.A20 significantly alleviates AKI development by dampening STING signaling pathway and NLRP3-mediated pyroptosis.Moreover,A20-derived peptide(P-II)also significantly alleviates ox-dsDNA-induced pyroptosis and improves the survival and renal injury of AKI mice.Mechanistically,A20 competitively binds with NEK7 and thus inhibiting NLRP3 inflammasome.A20 and P-II interfere with the interaction between NEK7 and NLRP3 through Lys140 of NEK7.Mutation of Lys140 effects on the interaction of NEK7 with A20 and/or NLRP3 complex.Conditional knockout of NEK7 in macrophages or pharmacological inhibition of NEK7 both significantly rescue AKI mouse models.This study reveals a new mechanism by which A20 attenuates oxidized self-DNA-mediated inflammation and provides a new therapeutic strategy for AKI. 展开更多
关键词 nlrp inflam sting pathway maintain homeostasisbut inflamMATION nlrp inflammasomewhile acute kidney injury aki regulate inflammation Oxidized Self DNA
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The role of inflammasomes in human diseases and their potential as therapeutic targets 被引量:11
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作者 Jing Yao Keenan Sterling +2 位作者 Zhe Wang Yun Zhang Weihong Song 《Signal Transduction and Targeted Therapy》 SCIE CSCD 2024年第2期479-508,共30页
Inflammasomes are large protein complexes that play a major role in sensing inflammatory signals and triggering the innate immune response.Each inflammasome complex has three major components:an upstream sensor molecu... Inflammasomes are large protein complexes that play a major role in sensing inflammatory signals and triggering the innate immune response.Each inflammasome complex has three major components:an upstream sensor molecule that is connected to a downstream effector protein such as caspase-1 through the adapter protein ASC.Inflammasome formation typically occurs in response to infectious agents or cellular damage.The active inflammasome then triggers caspase-1 activation,followed by the secretion of pro-inflammatory cytokines and pyroptotic cell death.Aberrant inflammasome activation and activity contribute to the development of diabetes,cancer,and several cardiovascular and neurodegenerative disorders.As a result,recent research has increasingly focused on investigating the mechanisms that regulate inflammasome assembly and activation,as well as the potential of targeting inflammasomes to treat various diseases.Multiple clinical trials are currently underway to evaluate the therapeutic potential of several distinct inflammasome-targeting therapies.Therefore,understanding how different inflammasomes contribute to disease pathology may have significant implications for developing novel therapeutic strategies.In this article,we provide a summary of the biological and pathological roles of inflammasomes in health and disease.We also highlight key evidence that suggests targeting inflammasomes could be a novel strategy for developing new disease-modifying therapies that may be effective in several conditions. 展开更多
关键词 inflam THERAPEUTIC POTENTIAL
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