Journal of Inflammation-London最新文献

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Non-ionic surfactant vesicles exert anti-inflammatory effects through inhibition of NFκB. 非离子表面活性剂囊泡通过抑制 NFκB 发挥抗炎作用。
IF 4.4 3区 医学
Journal of Inflammation-London Pub Date : 2024-11-26 DOI: 10.1186/s12950-024-00419-5
Jonathan McGahon, Stuart Woods, Riccardo D'Elia, Craig W Roberts
{"title":"Non-ionic surfactant vesicles exert anti-inflammatory effects through inhibition of NFκB.","authors":"Jonathan McGahon, Stuart Woods, Riccardo D'Elia, Craig W Roberts","doi":"10.1186/s12950-024-00419-5","DOIUrl":"10.1186/s12950-024-00419-5","url":null,"abstract":"<p><p>Inflammation can be an unwanted consequence or cause of debilitating diseases of infectious and non-infectious aetiologies. Current anti-inflammatory medications have several deficiencies including lack of specificity and undesirable side effects. Herein, the potential of non-ionic surfactant vesicles (NISV) comprised of monopalmityol glycerol, dicetyl phosphate and cholesterol) as an anti-inflammatory drug and their mode of action is investigated. NISV were able to inhibit LPS-induced IL-6 from BMD macrophages. The individual components of NISV, monopalmityol glycerol, dicetyl phosphate and cholesterol did not affect LPS induced IL-6 levels, proving that formulation of NISV is essential for their anti-inflammatory effects. Transcriptomic analyses showed NISV mediated down-regulation of transcripts for inflammatory mediators in LPS stimulated macrophages. Notably, NISV downregulate NF-κB transcripts in LPS stimulated macrophages. Measurement of inflammatory mediators by cytometric bead array validated a number of transcriptomic findings as NISV were found to inhibit LPS induced IL-6, IL-12, and multiple chemokines. Further investigation demonstrated that NISV inhibited Poly(I:C) or Pam3csk4 induced inflammatory mediators. This indicates that the effects of NISV are distal to both MyD88 and TRIF signalling. Overall, the data generated highlights the potential of NISV as an anti-inflammatory therapeutic.</p>","PeriodicalId":56120,"journal":{"name":"Journal of Inflammation-London","volume":"21 1","pages":"49"},"PeriodicalIF":4.4,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11590361/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142734765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Carvacrol alleviates LPS-induced myocardial dysfunction by inhibiting the TLR4/MyD88/NF-κB and NLRP3 inflammasome in cardiomyocytes. 香芹酚通过抑制心肌细胞中的 TLR4/MyD88/NF-κB 和 NLRP3 炎性体,缓解 LPS 诱导的心肌功能障碍。
IF 4.4 3区 医学
Journal of Inflammation-London Pub Date : 2024-11-15 DOI: 10.1186/s12950-024-00411-z
Lu Xu, Xu Yang, Xiao-Ting Liu, Xia-Yun Li, Han-Zhao Zhu, Yan-Hua Xie, Si-Wang Wang, Yao Li, Ye Zhao
{"title":"Carvacrol alleviates LPS-induced myocardial dysfunction by inhibiting the TLR4/MyD88/NF-κB and NLRP3 inflammasome in cardiomyocytes.","authors":"Lu Xu, Xu Yang, Xiao-Ting Liu, Xia-Yun Li, Han-Zhao Zhu, Yan-Hua Xie, Si-Wang Wang, Yao Li, Ye Zhao","doi":"10.1186/s12950-024-00411-z","DOIUrl":"10.1186/s12950-024-00411-z","url":null,"abstract":"<p><strong>Background: </strong>Sepsis-induced myocardial dysfunction (SIMD) may contribute to the poor prognosis of septic patients. Carvacrol (2-methyl-5-isopropyl phenol), a phenolic monoterpene compound extracted from various aromatic plants and fragrance essential oils, has multiple beneficial effects such as antibacterial, anti-inflammatory, and antioxidant properties. These attributes make it potentially useful for treating many diseases. This study aims to investigate the effects of CAR on LPS-induced myocardial dysfunction and explore the underlying mechanism.</p><p><strong>Results: </strong>H9c2 cells were stimulated with 10 µg/ml LPS for 12 h, and c57BL/6 mice were intraperitoneally injected with 10 mg/kg LPS to establish a septic-myocardial injury model. Our results showed that CAR could improve cardiac function, significantly reduce serum levels of inflammatory cytokines (including TNF-α, IL-1β, and IL-6), decrease oxidative stress, and inhibit cardiomyocyte apoptosis in LPS-injured mice. Additionally, CAR significantly downregulated the expression of TLR4, MyD88, and NF-κB in LPS-injured mice and H9c2 cells. It also inhibited the upregulation of inflammasome components (such as NLRP3, GSDMD, and IL-1β) in H9c2 cells triggered by LPS.</p><p><strong>Conclusion: </strong>Taken together, CAR exhibited potential cardioprotective effects against sepsis, which may be mainly attributed to the TLR4/MyD88/NF-κB pathway and the NLRP3 inflammasome.</p>","PeriodicalId":56120,"journal":{"name":"Journal of Inflammation-London","volume":"21 1","pages":"47"},"PeriodicalIF":4.4,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11568595/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142645185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Unveiling the hidden world of transfer RNA-derived small RNAs in inflammation. 揭开炎症中转运核糖核酸衍生小核糖核酸的隐秘世界。
IF 4.4 3区 医学
Journal of Inflammation-London Pub Date : 2024-11-12 DOI: 10.1186/s12950-024-00418-6
Peiru Qiu, Qi Jiang, Haojun Song
{"title":"Unveiling the hidden world of transfer RNA-derived small RNAs in inflammation.","authors":"Peiru Qiu, Qi Jiang, Haojun Song","doi":"10.1186/s12950-024-00418-6","DOIUrl":"10.1186/s12950-024-00418-6","url":null,"abstract":"<p><p>Transfer RNA-derived small RNAs (tsRNAs) are a newly discovered class of small noncoding RNAs (sncRNAs) that include tRNA-derived stress-induced RNAs (tiRNAs) and tRNA-derived fragments (tRFs). Following the development of high-throughput sequencing technology, an increasing number of tsRNAs have been discovered with vital functions in different physiological and pathophysiological processes. Extensive research has revealed that tsRNAs are involved in various diseases, such as cancers, autoimmune illnesses and other diseases. This review focuses on the role and significance of tsRNAs in inflammation, such as the regulation of substances including inflammatory inducers, inflammatory cells and inflammatory factors, which contribute to the pathogenesis of inflammation-related diseases. Moreover, we discuss in-depth the molecular pathogenic mechanisms of tsRNAs in inflammation-related diseases through different signaling pathways and assess their clinical value, providing new perspectives for the exploration of tsRNA functions and inflammation-related diseases.</p>","PeriodicalId":56120,"journal":{"name":"Journal of Inflammation-London","volume":"21 1","pages":"46"},"PeriodicalIF":4.4,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11556027/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142633546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Correction: Sodium butyrate alleviates R97-116 peptide-induced myasthenia gravis in mice by improving the gut microbiota and modulating immune response. 更正:丁酸钠可通过改善肠道微生物群和调节免疫反应来缓解 R97-116 肽诱发的小鼠肌无力。
IF 4.4 3区 医学
Journal of Inflammation-London Pub Date : 2024-11-11 DOI: 10.1186/s12950-024-00408-8
Jing Sun, Juanjuan Chen, Qinfang Xie, Mengjiao Sun, Wenjing Zhang, Hongxia Wang, Ning Liu, Qi Wang, Manxia Wang
{"title":"Correction: Sodium butyrate alleviates R97-116 peptide-induced myasthenia gravis in mice by improving the gut microbiota and modulating immune response.","authors":"Jing Sun, Juanjuan Chen, Qinfang Xie, Mengjiao Sun, Wenjing Zhang, Hongxia Wang, Ning Liu, Qi Wang, Manxia Wang","doi":"10.1186/s12950-024-00408-8","DOIUrl":"https://doi.org/10.1186/s12950-024-00408-8","url":null,"abstract":"","PeriodicalId":56120,"journal":{"name":"Journal of Inflammation-London","volume":"21 1","pages":"45"},"PeriodicalIF":4.4,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11552367/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142633545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Clinical, pharmacology and in vivo studies of QingDai (indigo naturalis) promotes mucosal healing and symptom improvement in ulcerative colitis by regulating the AHR-Th17/Treg pathway. 青黛(天然靛蓝)通过调节 AHR-Th17/Treg 通路促进溃疡性结肠炎粘膜愈合和症状改善的临床、药理和体内研究。
IF 4.4 3区 医学
Journal of Inflammation-London Pub Date : 2024-11-05 DOI: 10.1186/s12950-024-00413-x
Sizhen Gu, Yan Xue, Xiaowen Liu, Yini Tang, Dong Wang, Dongmei Wu, Mingrong Yao, Zehua Xia, Sen Yang, Gan Cai, Shigui Xue, Danbo Dou
{"title":"Clinical, pharmacology and in vivo studies of QingDai (indigo naturalis) promotes mucosal healing and symptom improvement in ulcerative colitis by regulating the AHR-Th17/Treg pathway.","authors":"Sizhen Gu, Yan Xue, Xiaowen Liu, Yini Tang, Dong Wang, Dongmei Wu, Mingrong Yao, Zehua Xia, Sen Yang, Gan Cai, Shigui Xue, Danbo Dou","doi":"10.1186/s12950-024-00413-x","DOIUrl":"10.1186/s12950-024-00413-x","url":null,"abstract":"<p><p>Qingdai (QD), derived from various plant sources, is commonly used in traditional Chinese medicine for ulcerative colitis (UC) treatment. However, the clinical efficacy and mechanisms of orally administered QD remain unclear. This study aims to evaluate QD's efficacy in UC treatment and uncover its active components and mechanisms. A randomized controlled trial compared QD to Adisa, followed by UPLC-Q-TOF/MS and network pharmacology analyses to identify QD's core components and targets. In vivo experiments on a UC mouse model explored QD's impact on the AHR-Th17/Treg pathway using PCR, WB, ELISA, and flow cytometry. Results showed QD's efficacy in UC treatment, with mucosal healing and remission comparable to Adisa. UPLC-Q-TOF/MS identified 16 core components in mouse colon tissue, with network pharmacology revealing 67 targets, potentially involving the IL-17 signaling pathway and Th17 cell differentiation. QD and its components up-regulated AHR, CYP1A1, and Foxp3, while down-regulating RORγt. Additionally, QD modulated pro-inflammatory (IL-6, IL-17 A) and anti-inflammatory (IL-10, TGF-β1) factors, and Treg/Th17 cell ratios in LPMC. Oral QD administration effectively promoted mucosal healing and improved UC symptoms, potentially through AHR-Th17/Treg pathway regulation.</p>","PeriodicalId":56120,"journal":{"name":"Journal of Inflammation-London","volume":"21 1","pages":"44"},"PeriodicalIF":4.4,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11536804/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142585261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Regulatory role of microRNAs in virus-mediated inflammation. 微小核糖核酸在病毒介导的炎症中的调控作用。
IF 4.4 3区 医学
Journal of Inflammation-London Pub Date : 2024-11-04 DOI: 10.1186/s12950-024-00417-7
Hossein Bannazadeh Baghi, Mobina Bayat, Parisa Mehrasa, Seyed Mohammad Amin Alavi, Mohammad Hassan Lotfalizadeh, Mohammad Yousef Memar, Seyed Pouya Taghavi, Fatemeh Zarepour, Michael R Hamblin, Javid Sadri Nahand, Seyed Mohammad Reza Hashemian, Hamed Mirzaei
{"title":"Regulatory role of microRNAs in virus-mediated inflammation.","authors":"Hossein Bannazadeh Baghi, Mobina Bayat, Parisa Mehrasa, Seyed Mohammad Amin Alavi, Mohammad Hassan Lotfalizadeh, Mohammad Yousef Memar, Seyed Pouya Taghavi, Fatemeh Zarepour, Michael R Hamblin, Javid Sadri Nahand, Seyed Mohammad Reza Hashemian, Hamed Mirzaei","doi":"10.1186/s12950-024-00417-7","DOIUrl":"10.1186/s12950-024-00417-7","url":null,"abstract":"<p><p>Viral infections in humans often cause excessive inflammation. In some viral infections, inflammation can be serious and even fatal, while in other infections it can promote viral clearance. Viruses can escape from the host immune system via regulating inflammatory pathways, thus worsening the illness. MicroRNAs (miRNAs) are tiny non-coding RNA molecules expressed within diverse tissues as well as cells and are engaged in different normal pathological and physiological pathways. Emerging proof suggests that miRNAs can impact innate and adaptive immunity, inflammatory responses, cell invasion, and the progression of viral infections. We discuss some intriguing new findings in the current work, focusing on the impacts of different miRNAs on host inflammatory responses and virus-mediated inflammation. A better understanding of dysregulated miRNAs in viral infections could improve the identification, prevention, and treatment of several serious diseases.</p>","PeriodicalId":56120,"journal":{"name":"Journal of Inflammation-London","volume":"21 1","pages":"43"},"PeriodicalIF":4.4,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11536602/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142577272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Influence and distinctions of particulate matter exposure across varying etiotypes in chronic obstructive pulmonary disease (COPD) mouse model. 慢性阻塞性肺病(COPD)小鼠模型中不同病因类型的颗粒物暴露的影响和区别。
IF 4.4 3区 医学
Journal of Inflammation-London Pub Date : 2024-11-01 DOI: 10.1186/s12950-024-00416-8
Jung Hur, Chin Kook Rhee, Hyoung Kyu Yoon, Chan Kwon Park, Jeong Uk Lim, Tai Joon An, Joon Young Choi, Yong Suk Jo
{"title":"Influence and distinctions of particulate matter exposure across varying etiotypes in chronic obstructive pulmonary disease (COPD) mouse model.","authors":"Jung Hur, Chin Kook Rhee, Hyoung Kyu Yoon, Chan Kwon Park, Jeong Uk Lim, Tai Joon An, Joon Young Choi, Yong Suk Jo","doi":"10.1186/s12950-024-00416-8","DOIUrl":"10.1186/s12950-024-00416-8","url":null,"abstract":"<p><strong>Background: </strong>Air pollution, notably particulate matter (PM), significantly impacts chronic respiratory disease such chronic obstructive pulmonary disease (COPD). Although asthma-COPD overlap (ACO), considered one of the COPD etiotype, is associated with greater severity in both symptoms and outcomes, effects of PM exposure remain unclear. Thus, this study aimed to evaluate impact of PM on chronic airway disease animal models.</p><p><strong>Methods: </strong>We established two distinct COPD etiotypes, cigarette smoking-related COPD (COPD-C) and COPD with asthma (COPD-A), using porcine pancreatic elastase (PPE) for COPD-C and a combination of PPE with ovalbumin for COPD-A. To reflect smoking influence, cigarette smoking extract was administered to both disease models. To assess impact of PM exposure, bronchoalveolar lavage fluid (BALF), proinflammatory cytokines, lung histology, and cellular damage mechanisms were analyzed.</p><p><strong>Results: </strong>In the COPD-A model, cell counts and type 2 cytokines were elevated in BALF independent of PM exposure. All models exhibited increased lung inflammation and emphysema due to PM exposure. Expression levels of apoptosis-related protein B-cell lymphoma protein 2 (Bcl-2) associated X (Bax) showed an inclination to increase with PM exposure. In the COPD-A model, decreased expression of basal nuclear factor erythroid-derived 2-like 2 (Nrf-2) and increased production of reactive oxygen species (ROS) due to PM exposure were noted.</p><p><strong>Conclusion: </strong>We developed two distinct models for the etiotypes of COPD and found increased vulnerability to cell damage in COPD-A after PM exposure. Moreover, the control group displayed escalated airway inflammation and emphysema due to PM exposure, substantiating the risk of respiratory diseases.</p>","PeriodicalId":56120,"journal":{"name":"Journal of Inflammation-London","volume":"21 1","pages":"42"},"PeriodicalIF":4.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11529024/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142565431","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Profile of immune response during nasal challenge with dermatophagoides pteronyssinus in subjects with allergic airway diseases. 过敏性气道疾病患者在鼻腔接受翼状皮炎挑战时的免疫反应谱。
IF 4.4 3区 医学
Journal of Inflammation-London Pub Date : 2024-10-31 DOI: 10.1186/s12950-024-00415-9
Laura Tamasauskiene, Brigita Gradauskiene
{"title":"Profile of immune response during nasal challenge with dermatophagoides pteronyssinus in subjects with allergic airway diseases.","authors":"Laura Tamasauskiene, Brigita Gradauskiene","doi":"10.1186/s12950-024-00415-9","DOIUrl":"10.1186/s12950-024-00415-9","url":null,"abstract":"<p><strong>Background: </strong>T lymphocyte helper (Th) 2 plays the main role in pathogenesis of allergic airway diseases (AAD). Recent studies showed that interleukin (IL) 33, Th17 and Th22 also may be involved in allergic inflammation. The aim is to evaluate cytokine level before and after nasal challenge with Dermatophagoides pteronyssinus in patients with AAD.</p><p><strong>Methods: </strong>Patients with persistent allergic rhinitis (AR) with or without allergic asthma (AA) allergic to house dust mite and healthy individuals underwent nasal challenge with Dermatophagoides pteronyssinus. Measurements of IL-13, IL-17, IL-22 and IL-33 in serum and nasal lavage were performed before, 2 and 22 h after nasal challenge by ELISA.</p><p><strong>Results: </strong>. Ten patients with AR only, 6 patients with AR and AA and 7 healthy individuals were involved in the study. Serum IL-22 level significantly increased in patients with AR and AA and nasal lavage IL-22 tended to increase in patients with AAD after nasal challenge. Serum IL-13 level tended to increase in patients with AR and AA. IL-13 level in nasal lavage fluid decreased at 22 h after nasal challenge in patients with AR only. IL-17 level in serum and nasal lavage decreased in patients with AAD. Serum IL-33 tended to increase after nasal challenge whereas IL-33 in nasal lavage significantly decreased.</p><p><strong>Conclusion: </strong>Cytokine profile differs between local and systemic compartments and between patients with allergic rhinitis only and patients with allergic rhinitis and asthma after nasal challenge.</p>","PeriodicalId":56120,"journal":{"name":"Journal of Inflammation-London","volume":"21 1","pages":"41"},"PeriodicalIF":4.4,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11526524/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142559580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Transcriptional pathways of terminal differentiation in high- and low-density blood granulocytes in sepsis. 败血症中高密度和低密度血粒细胞末端分化的转录途径。
IF 4.4 3区 医学
Journal of Inflammation-London Pub Date : 2024-10-21 DOI: 10.1186/s12950-024-00414-w
Tobias Guenther, Anna Coulibaly, Sonia Y Velásquez, Jutta Schulte, Tanja Fuderer, Timo Sturm, Bianka Hahn, Manfred Thiel, Holger A Lindner
{"title":"Transcriptional pathways of terminal differentiation in high- and low-density blood granulocytes in sepsis.","authors":"Tobias Guenther, Anna Coulibaly, Sonia Y Velásquez, Jutta Schulte, Tanja Fuderer, Timo Sturm, Bianka Hahn, Manfred Thiel, Holger A Lindner","doi":"10.1186/s12950-024-00414-w","DOIUrl":"10.1186/s12950-024-00414-w","url":null,"abstract":"<p><strong>Background: </strong>Trauma and infection induce emergency granulopoiesis. Counts of immature granulocytes and transcriptional pathways of terminal granulocytic differentiation in blood are elevated in sepsis but correlate with disease severity. This limits their performance as sepsis biomarkers in critically ill patients. We hypothesized that activation of these pathways in sepsis is attributable to immature low-density (LD) rather than mature high-density (HD) granulocytes.</p><p><strong>Methods: </strong>We included patients with sepsis and systemic inflammatory response syndrome (SIRS) of comparable disease severity, and additionally septic shock, on intensive or intermediate care unit admission. Blood granulocyte isolation by CD15 MicroBeads was followed by density-gradient centrifugation. Flow cytometry was used to determine counts of developmental stages (precursors) and their relative abundancies in total, HD, and LD granulocytes. Five degranulation markers were quantified in plasma by multiplex immunoassays. A set of 135 genes mapping granulocyte differentiation was assayed by QuantiGene™ Plex. CEACAM4, PLAC8, and CD63 were analyzed by qRT-PCR. Nonparametric statistical tests were applied.</p><p><strong>Results: </strong>Precursor counts appeared higher in sepsis than SIRS but did not correlate with disease severity for early immature and mature granulocytes. Precursor subpopulations were enriched at least ten-fold in LD over HD granulocytes without sepsis-SIRS differences. Degranulation markers in blood were comparable in sepsis and SIRS. Higher expression of early developmental genes in sepsis than SIRS was more pronounced in LD and less in HD than total granulocytes. Only the cell membrane protein encoding genes CXCR2 and CEACAM4 were more highly expressed in SIRS than sepsis. By qRT-PCR, the azurophilic granule genes CD63 and PLAC8 showed higher sepsis than SIRS levels in LD granulocytes and PLAC8 also in total granulocytes where its discriminatory performance resembled C-reactive protein (CRP).</p><p><strong>Conclusions: </strong>Transcriptional programs of early terminal granulocytic differentiation distinguish sepsis from SIRS due to both higher counts of immature granulocytes and elevated expression of early developmental genes in sepsis. The sustained expression of PLAC8 in mature granulocytes likely accounts for its selection in the whole blood SeptiCyte™ LAB test. Total granulocyte PLAC8 rivals CRP as sepsis biomarker. However, infection-specific transcriptional pathways, that differentiate sepsis from sterile stress-induced granulocytosis more reliably than CRP, remain to be identified.</p>","PeriodicalId":56120,"journal":{"name":"Journal of Inflammation-London","volume":"21 1","pages":"40"},"PeriodicalIF":4.4,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11492786/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142481865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Locomotor and gait changes in the LPS model of neuroinflammation are correlated with inflammatory cytokines in blood and brain. LPS神经炎症模型中的运动和步态变化与血液和大脑中的炎症细胞因子相关。
IF 4.4 3区 医学
Journal of Inflammation-London Pub Date : 2024-10-08 DOI: 10.1186/s12950-024-00412-y
Diogo Carregosa, Natasa Loncarevic-Vasiljkovic, Raquel Feliciano, Diogo Moura-Louro, César S Mendes, Cláudia Nunes Dos Santos
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