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Önal U, Tüzemen Ü, Küçükdemirci Kaya P, İşçimen R, Kelebek Girgin N, Özakın C, Kahveci F, Akalın H. A comparative study of ceftazidime/avibactam-based and fosfomycin plus meropenem-based regimens for managing infections caused by carbapenem-resistant Klebsiella pneumoniae in critically ill patients. J Chemother 2024:1-9. [PMID: 38698711 DOI: 10.1080/1120009x.2024.2349439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 04/24/2024] [Indexed: 05/05/2024]
Abstract
The main aim of this study was to compare and analyze the effectiveness of treatment regimens using ceftazidime/avibactam (CAZ/AVI) versus fosfomycin plus meropenem (FOS/MER) for managing bloodstream infections (BSI) or ventilator-associated pneumonia (VAP) caused by carbapenem-resistant Klebsiella pneumoniae (CRKP) in critically ill patients. Between 4 January 2019, and 16 July 2023, adult patients (≥18 years old) diagnosed with BSI or VAP due to culture confirmed CRKP in ICU of a tertiary care hospital were investigated retrospectively. A total of 71 patients were categorized into two groups: 30 patients in CAZ/AVI-based, and 41 patients in FOS/MER-based group. No substantial disparities were found in the total duration of ICU hospitalization, as well as the 14- and 30-day mortality rates, between patients treated with CAZ/AVI-based and FOS/MER-based therapeutic regimens. We consider that our study provides for the first time a comprehensive understanding of treatment outcomes and associated risk factors among patients with CRKP-related infections.
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Affiliation(s)
- Uğur Önal
- Department of Infectious Diseases and Clinical Microbiology, Uludag University, Bursa, Türkiye
| | - Ülkü Tüzemen
- Department of Medical Microbiology, Uludag University, Bursa, Türkiye
| | | | - Remzi İşçimen
- Department of Anesthesiology and Reanimation, Uludag University, Bursa, Türkiye
| | | | - Cüneyt Özakın
- Department of Medical Microbiology, Uludag University, Bursa, Türkiye
| | - Ferda Kahveci
- Department of Anesthesiology and Reanimation, Uludag University, Bursa, Türkiye
| | - Halis Akalın
- Department of Infectious Diseases and Clinical Microbiology, Uludag University, Bursa, Türkiye
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Yang Q, Feng Z, Ding D, Kang C. CD3D and CD247 are the molecular targets of septic shock. Medicine (Baltimore) 2023; 102:e34295. [PMID: 37478215 PMCID: PMC10662883 DOI: 10.1097/md.0000000000034295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 06/21/2023] [Indexed: 07/23/2023] Open
Abstract
Septic shock is a serious systemic disease with circulatory failure and abnormal cell metabolism caused by sepsis. However, the relationship between CD3D and CD247 and septic shock remains unclear. The septic shock datasets GSE33118 and GSE142255 profiles were generated from the gene expression omnibus databases GPl570, GPl17586. Differentially expressed genes (DEGs) were screened and weighted gene co-expression network analysis was performed. The construction and analysis of protein-protein interaction (PPI) network, functional enrichment analysis, gene set enrichment analysis (GSEA) were performed. Gene expression heat map was drawn. Immune infiltration analysis was performed. Comparative toxicogenomics database (CTD) analysis were performed to find the disease most related to the core gene. Targets can was used to screen miRNAs regulating the hub DEGs. 467 DEGs were identified. According to the gene ontology analysis, they were mainly enriched in the regulation of immune response, cell activation, signaling receptor activity, enzyme binding. Kyoto encyclopedia of genes and genomes analysis showed that they were mainly enriched in the TCR signaling pathway, Fc epsilon RI signaling pathway. GSEA showed that the DEGs were mainly enriched in immune response regulation, cell activation, TCR signaling pathway, Fc epsilon RI signaling pathway. Positive regulation of Fc receptor signaling pathway, PID IL12 2 pathway, immune response was observed in go enrichment items in the enrichment items of metascape. PPI networks got 5 core genes. Gene expression heat map showed that 5 core genes (CD247, Lck, cd3e, cd3d, ITK) were lowly expressed in the sepsis shock samples and highly expressed in the normal samples. CTD analysis showed that 5 core genes (CD247, Lck, cd3e, cd3d, ITK) were found to be associated with hemorrhage and necrosis. Low expression of cd3d, CD247 was observed in septic shock, and the lower the level of cd3d, CD247, the worse the prognosis.
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Affiliation(s)
- Qian Yang
- Intensive Care Unit, Gastrointestinal Rehabilitation Center, Beijing Rehabilitation Hospital Affiliated to Capital Medical University, Beijing, China
| | - Zhijuan Feng
- Department of Critical Care Medicine, Air Force Medical Center, Beijing, China
| | - Danyang Ding
- Gastrointestinal Rehabilitation Center, Beijing Rehabilitation Hospital Affiliated to Capital Medical University, Beijing, China
| | - Chunbo Kang
- Gastrointestinal Rehabilitation Center, Beijing Rehabilitation Hospital Affiliated to Capital Medical University, Beijing, China
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Accuracy of SIRS, age-adapted pSOFA, and quick SOFA scoring systems for predicting outcomes in paediatric patients with sepsis: a meta-analysis. Pediatr Neonatol 2022; 63:172-180. [PMID: 34887229 DOI: 10.1016/j.pedneo.2021.09.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 09/06/2021] [Accepted: 09/13/2021] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Sepsis is the leading cause of mortality in children. Several scoring systems are used to predict outcome and mortality for pediatric patients with sepsis, but how they compare to each other in terms of sensitivity and specificity is unclear. METHODS The systematic literature review was performed following PRISMA guidelines. Publically accessible search engines and study databases such as PubMed, CENTRAL (Cochrane Central Register of Controlled Trials), and Google Scholar were scanned for articles published from January 1990 to March 2021 using relevant key words. All relevant studies were analyzed separately by two reviewers. A random-effects model was used to calculate the pooled sensitivity and pooled specificity with a 95% confidence interval (CI). Heterogeneity was evaluated using I2, which estimates the percentage of variation between study results due to heterogeneity rather than sampling error. RESULTS Eleven studies met inclusion criteria and evaluated the SOFA scoring system. The pooled sensitivity, specificity, and SROC for prediction of mortality were 83% (95% CI: 76%-88%), 72% (95% CI: 60%-81%), and 85% (95% CI: 82%-88%), respectively. Six studies examined the SIRS system. Pooled sensitivity, specificity, and SROC were 80% (95% CI: 64%-90%), 36% (95% CI: 23%-51%), and 59% (95% CI: 55%-63%), respectively. CONCLUSION This meta-analysis shows that SOFA was superior to SIRS for predicting mortality in PICU patients with sepsis. Additional prospective multi-centric studies are needed to better evaluate and validate this finding.
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Clar J, Oltra MR, Benavent R, Pinto C, Ruiz A, Sanchez MT, Noceda J, Redon J, Forner MJ. Prognostic value of diagnostic scales in community-acquired sepsis mortality at an emergency service. Prognosis in community-adquired sepsis. BMC Emerg Med 2021; 21:161. [PMID: 34922448 PMCID: PMC8684687 DOI: 10.1186/s12873-021-00532-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 09/30/2021] [Indexed: 12/16/2022] Open
Abstract
Objectives To asses the prognostic value of diagnostic scales in mortality of community-adquired sepsis and added value of additional parameters. Methods Prospective observational study of patients with community-adquired sepsis in the Emergency Room of University Hospital. The study population were patients presented in the Emergency Room with confirmed infection and practicians sepsis diagnosis. Demographics, triage vital signs, inhaled oxygen fraction, inflammatory markers, biochemistry, all-cause mortality during hospitalization and three months after were recorded. Prognostic value of qSOFA, NEWS, SOFA, SIRS, and amplified scales were calculated by using logistic regression and ROC curves. Results 201 patients, 54% male, average age 77±11,2 years were included. Sixty-three (31.5%) died during hospitalization and 24 (12%) three months after discharge. At the time of admission vital signs related with in-hospital mortality were Glasgow Coma Scale <13, respiratory rate ≥22 bpm, temperature, oxygen desaturation, high flow oxygen therapy and heart rate. Patients dead in-hospital had lower PaCO2, higher lactate, glucose and creatinine. Greater predictive capacity of the scales, from higher to lower, was: qSOFA, NEWS2, SOFA and SIRS. Amplified scales with lactate >2mg/dl, glucose, blood level >190mg/dl and PaCO2 <35mmHg improved predictive value. Conclusion Amplified-qSOFA and amplified-NEWS2 scales at Emergency Department may offer a better prognostic of septic patients mortality. Supplementary Information The online version contains supplementary material available at 10.1186/s12873-021-00532-1.
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Affiliation(s)
- Jorge Clar
- Clinic Hospital. University of Valencia, 46010, València, Spain
| | | | - Raquel Benavent
- Clinic Hospital. University of Valencia, 46010, València, Spain
| | - Carolina Pinto
- Clinic Hospital. University of Valencia, 46010, València, Spain
| | - Adrian Ruiz
- Clinic Hospital. University of Valencia, 46010, València, Spain
| | | | - Jose Noceda
- Clinic Hospital. University of Valencia, 46010, València, Spain
| | - Josep Redon
- Clinic Hospital. University of Valencia, 46010, València, Spain. .,INCLIVA Research Institute, 46010, Valencia, Spain. .,CIBERObn, Institute of Health Carlos III, Madrid, Spain.
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El-Mashad GM, El-Mekkawy MS, Zayan MH. Paediatric sequential organ failure assessment (pSOFA) score: a new mortality prediction score in the paediatric intensive care unit. An Pediatr (Barc) 2020. [DOI: 10.1016/j.anpede.2019.11.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Shahsavarinia K, Moharramzadeh P, Arvanagi RJ, Mahmoodpoor A. qSOFA score for prediction of sepsis outcome in emergency department. Pak J Med Sci 2020; 36:668-672. [PMID: 32494253 PMCID: PMC7260919 DOI: 10.12669/pjms.36.4.2031] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Objective: The third international consensus definition for sepsis and septic shock (sepsis 3) task force recently introduced qSOFA (quick sequential organ failure assessment) as a score for detection of patients at risk of sepsis outside of intensive care units. We performed this study to evaluate the validity of qSOFA for early detection and risk stratification of septic patients in emergency department. Methods: We conducted this study in an emergency department of the largest university affiliated hospital in northwest of Iran from Sept 2015 to Sept 2016. One hundred and forty patients who were SIRS positive with a suspected infection without alternative diagnosis and a microbiological proven infection were enrolled in this study. qSOFA was calculated for each patient and correlated with sepsis grades and mortality. Results: From 140 patients 84 (60%) had positive qSOFA score and 56 (40%) patients had negative qSOFA score. Our results showed that near half of patients with positive qSOFA expired during their stay in hospital while this was about 5% for patients with negative qSOFA. ROC curve of study regarding prediction of outcome with qSOFA showed an area under curve of 0.59. (P value: 0.04). Time spent to sepsis detection was 16 minutes shorter with qSOFA score compared to SIRS criteria in this study. Conclusion: In patients with suspected sepsis, qSOFA has acceptable value for risk stratification of severity, multi organ failure and mortality. It seems that education of medical staff and frequent screening of patients for warning signs can help to increase the value of qSOFA in prediction of mortality in critically ill septic patients.
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Affiliation(s)
- Kavous Shahsavarinia
- Kavous Shahsavarinia, Associate Professor, Road Traffic Injury Research Center, Department of Emergency Medicine, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Payman Moharramzadeh
- Payman Moharramzadeh, Associate Professor, Department of Emergency Medicine, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Reza Jamal Arvanagi
- Reza Jamal Arvanagi, Emergency Medicine Specialist, Department of Emergency Medicine, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ata Mahmoodpoor
- Prof. Dr. Ata Mahmoodpoor, Department of Anesthesiology and intensive care, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
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Bulatova YY, Maltabarova NA, Zhumabayev MB, Li TA, Ivanova MP. Modern Diagnostics of Sepsis and Septic Shock in Children. ELECTRONIC JOURNAL OF GENERAL MEDICINE 2020. [DOI: 10.29333/ejgm/7879] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Ruggerone B, Paltrinieri S, Giordano A, Scavone D, Nocera I, Rinnovati R, Spadari A, Scacco L, Pratelli P, Sgorbini M. Paraoxonase-1 activity evaluation as a diagnostic and prognostic marker in horses and foals. J Vet Intern Med 2020; 34:949-954. [PMID: 32154619 PMCID: PMC7096640 DOI: 10.1111/jvim.15722] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Accepted: 01/23/2020] [Indexed: 11/27/2022] Open
Abstract
Background In several species, paraoxonase‐1 (PON‐1) decreases during inflammation, because of the presence of oxidative stress; its measurement recently has been validated in horses, but its role as a clinical biomarker is unknown. Objectives To evaluate sensitivity, specificity and likelihood ratio of PON‐1 activity to identify systemic inflammatory response syndrome (SIRS)‐positive horses or horses with a poor prognosis. Animals One hundred seventy‐two blood samples from 58 sick horses from 3 different veterinary hospitals. Methods In a cross‐sectional study, PON‐1 activity was measured upon admission and at 24‐hour intervals until discharge or death, and results were analyzed based on SIRS status and outcome. Results No statistically significant difference was found in median PON‐1 activity between SIRS and non‐SIRS cases or between survivors and non‐survivors except for mares, in which PON‐1 activity was significantly lower in SIRS‐positive horses (P = .05). The sensitivity of PON‐1 activity in identifying horses with SIRS or negative outcome was low (0.0%‐46.2% depending on the examined group) but its specificity was high (87.0%‐100.0%). However, when PON‐1 is low, the likelihood of death is 2.40‐3.89 times higher than the likelihood of survival. Repeated measurement of PON‐1 after treatment does not predict outcome. Conclusions and Clinical Importance Evaluation of PON‐1 activity in horses with inflammation might be advisable in the future, but only low activity at admission may be relevant in predicting SIRS or negative outcome.
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Affiliation(s)
- Beatrice Ruggerone
- Department of Veterinary Medicine, University of Milan, Milano, Italy.,Veterinary Teaching Hospital, University of Milan, Lodi, Italy
| | - Saverio Paltrinieri
- Department of Veterinary Medicine, University of Milan, Milano, Italy.,Veterinary Teaching Hospital, University of Milan, Lodi, Italy
| | - Alessia Giordano
- Department of Veterinary Medicine, University of Milan, Milano, Italy.,Veterinary Teaching Hospital, University of Milan, Lodi, Italy
| | - Donatella Scavone
- Department of Veterinary Medicine, University of Milan, Milano, Italy.,Veterinary Teaching Hospital, University of Milan, Lodi, Italy
| | - Irene Nocera
- Department of Veterinary Sciences, University of Pisa, Pisa, Italy.,Veterinary Teaching Hospital, Department of Veterinary Sciences, University of Pisa, Pisa, Italy
| | - Riccardo Rinnovati
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
| | - Alessandro Spadari
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
| | - Licia Scacco
- Equivet Roma Hospital, Equine Veterinary Clinic, Roma, Italy
| | | | - Micaela Sgorbini
- Department of Veterinary Sciences, University of Pisa, Pisa, Italy.,Veterinary Teaching Hospital, Department of Veterinary Sciences, University of Pisa, Pisa, Italy
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9
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Mohamed El-Mashad G, Said El-Mekkawy M, Helmy Zayan M. [Paediatric sequential organ failure assessment (pSOFA) score: A new mortality prediction score in the paediatric intensive care unit]. An Pediatr (Barc) 2019; 92:277-285. [PMID: 31784324 DOI: 10.1016/j.anpedi.2019.05.018] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Revised: 05/09/2019] [Accepted: 05/11/2019] [Indexed: 01/25/2023] Open
Abstract
OBJECTIVES To assess performance of the age-adapted SOFA score in children admitted into Paediatric Intensive Care Units (PICUs) and whether the SOFA score can compete with the systemic inflammatory response syndrome (SIRS) in diagnosing sepsis, as recommended in the Sepsis-3 consensus definitions. METHODS Two-centre prospective observational study in 281 children admitted to the PICU. We calculated the SOFA, Pediatric Risk of Mortality (PRISM), and Pediatric Index of Mortality-2 (PIM2) scores and assessed for the presence of SIRS at admission. The primary outcome was 30-day mortality. RESULTS The SOFA score was higher in nonsurvivors (P<.001) and mortality increased progressively across patient subgroups from lower to higher SOFA scores. The receiver operating characteristic (ROC) curve analysis revealed that the area under the curve (AUC) of the SOFA score for predicting 30-day mortality was 0.89, compared to AUCs of 0.84 and 0.79 for the PRISM and PIM2 scores, respectively. The AUC of the SOFA score for predicting a prolonged stay in the PICU was 0.67. The SOFA score was correlated to the PRISM score (rs=0.59) and the PIM2 score (rs=0.51). In children with infection, the AUC of the SOFA score for predicting mortality was 0.87 compared to an AUC of 0.60 using SIRS. The diagnosis of sepsis applying a SOFA cutoff of 3 points predicted mortality better than both the SIRS and the SOFA cutoff of 2 points recommended by the Sepsis-3 consensus. CONCLUSIONS The SOFA score at admission is useful for predicting outcomes in the general PICU population and is more accurate than SIRS for definition of paediatric sepsis.
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Tunctan B, Senol SP, Temiz-Resitoglu M, Guden DS, Sahan-Firat S, Falck JR, Malik KU. Eicosanoids derived from cytochrome P450 pathway of arachidonic acid and inflammatory shock. Prostaglandins Other Lipid Mediat 2019; 145:106377. [PMID: 31586592 DOI: 10.1016/j.prostaglandins.2019.106377] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2019] [Revised: 09/06/2019] [Accepted: 09/18/2019] [Indexed: 12/14/2022]
Abstract
Sepsis is a life-threatening organ dysfunction caused by a dysregulated host response to infection. Septic shock, the most common form of vasodilatory shock, is a subset of sepsis in which circulatory and cellular/metabolic abnormalities are severe enough to increase mortality. Inflammatory shock constitutes the hallmark of sepsis, but also a final common pathway of any form of severe long-term tissue hypoperfusion. The pathogenesis of inflammatory shock seems to be due to circulating substances released by pathogens (e.g., bacterial endotoxins) and host immuno-inflammatory responses (e.g., changes in the production of histamine, bradykinin, serotonin, nitric oxide [NO], reactive nitrogen and oxygen species, and arachidonic acid [AA]-derived eicosanoids mainly through NO synthase, cyclooxygenase, and cytochrome P450 [CYP] pathways, and proinflammatory cytokine formation). Therefore, refractory hypotension to vasoconstrictors with end-organ hypoperfusion is a life threatening feature of inflammatory shock. This review summarizes the current knowledge regarding the role of eicosanoids derived from CYP pathway of AA in animal models of inflammatory shock syndromes with an emphasis on septic shock in addition to potential therapeutic strategies targeting specific CYP isoforms responsible for proinflammatory/anti-inflammatory mediator production.
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Affiliation(s)
- Bahar Tunctan
- Department of Pharmacology, Faculty of Pharmacy, Mersin University, Mersin, Turkey.
| | - Sefika Pinar Senol
- Department of Pharmacology, Faculty of Pharmacy, Mersin University, Mersin, Turkey
| | | | - Demet Sinem Guden
- Department of Pharmacology, Faculty of Pharmacy, Mersin University, Mersin, Turkey
| | - Seyhan Sahan-Firat
- Department of Pharmacology, Faculty of Pharmacy, Mersin University, Mersin, Turkey
| | - John R Falck
- Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Kafait U Malik
- Department of Pharmacology, College of Medicine, University of Tennessee, Center for Health Sciences, Memphis, TN, USA
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Li Z, Han S, Jia Y, Yang Y, Han F, Wu G, Li X, Zhang W, Jia W, He X, Han J, Hu D. MCPIP1 regulates RORα expression to protect against liver injury induced by lipopolysaccharide via modulation of miR-155. J Cell Physiol 2019; 234:16562-16572. [PMID: 30811042 DOI: 10.1002/jcp.28327] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 01/20/2019] [Accepted: 01/24/2019] [Indexed: 02/06/2023]
Abstract
Liver injury plays vital roles in the development of inflammation and organ dysfunction during sepsis. MCP-1-induced protein 1 (MCPIP1), as an endoribonuclease, is a critical regulator for the maintenance of immune homeostasis. However, whether MCPIP1 participates in the septic liver injury remains unknown. The aim of this study was to investigate the role of MCPIP1 in lipopolysaccharides-induced liver injury and the underlying modulatory mechanisms. Quantitative real-time polymerase chain reaction and immunoblotting were used to determine proinflammatory cytokines, MCPIP1, retinoid-related orphan receptor α (RORα), miR-155, and related protein from nuclear factor-κB (NF-κB) pathway expression. Dual luciferase reporter assay was used to analyze whether miR-155 regulates RORα transcription. Secretion of inflammatory cytokines into sera in mice were measured by enzyme-linked immunosorbent assay. Hematoxylin and eosin staining, alanine aminotransferase, and aspartate transaminase, assay were used to evaluate liver function. We found that MCPIP1 expression was notably upregulated and significantly downregulated inflammatory cytokine secretion and NF-κB signaling activation in macrophages following exposure to lipopolysaccharide. Moreover, miR-155, lowered by MCPIP1, directly targeted on 3'-untranslated region of RORα to activate an inflammatory response. Importantly, MCPIP1 overexpression in mice alleviated septic liver injury symptoms following lipopolysaccharides stimulation. Collectively, these data highlight MCPIP1/miR-155/RORα axis as a novel modulation of inflammation in liver injury and potential therapeutic target for future research.
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Affiliation(s)
- Zhenzhen Li
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, Xi'an, Shaanxi, China.,Department of Neurobiology and Institute of Neurosciences, School of Basic Medicine, Air Force Medical University, Xi'an, Shaanxi, China
| | - Shichao Han
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, Xi'an, Shaanxi, China
| | - Yanhui Jia
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, Xi'an, Shaanxi, China
| | - Yunshu Yang
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, Xi'an, Shaanxi, China
| | - Fu Han
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, Xi'an, Shaanxi, China
| | - Gaofeng Wu
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, Xi'an, Shaanxi, China
| | - Xiaoqiang Li
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, Xi'an, Shaanxi, China
| | - Wei Zhang
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, Xi'an, Shaanxi, China
| | - Wenbin Jia
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, Xi'an, Shaanxi, China
| | - Xiang He
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, Xi'an, Shaanxi, China
| | - Juntao Han
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, Xi'an, Shaanxi, China
| | - Dahai Hu
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, Xi'an, Shaanxi, China
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Yao X, Dong G, Zhu Y, Yan F, Zhang H, Ma Q, Fu X, Li X, Zhang Q, Zhang J, Shi H, Ning Z, Dai J, Li Z, Li C, Wang B, Ming J, Yang Y, Hong F, Meng X, Xiong H, Si C. Leukadherin-1-Mediated Activation of CD11b Inhibits LPS-Induced Pro-inflammatory Response in Macrophages and Protects Mice Against Endotoxic Shock by Blocking LPS-TLR4 Interaction. Front Immunol 2019; 10:215. [PMID: 30809230 PMCID: PMC6379471 DOI: 10.3389/fimmu.2019.00215] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Accepted: 01/24/2019] [Indexed: 01/04/2023] Open
Abstract
Dysregulation of macrophage has been demonstrated to contribute to aberrant immune responses and inflammatory diseases. CD11b, expressed on macrophages, plays a critical role in regulating pathogen recognition, phagocytosis, and cell survival. In the present study, we explored the effect of leukadherin-1 (LA1), an agonist of CD11b, on regulating LPS-induced pro-inflammatory response in macrophages and endotoxic shock. Intriguingly, we found that LA1 could significantly reduce mortalities of mice and alleviated pathological injury of liver and lung in endotoxic shock. In vivo studies showed that LA1-induced activation of CD11b significantly inhibited the LPS-induced pro-inflammatory response in macrophages of mice. Moreover, LA1-induced activation of CD11b significantly inhibited LPS/IFN-γ-induced pro-inflammatory response in macrophages by inhibiting MAPKs and NF-κB signaling pathways in vitro. Furthermore, the mice injected with LA1-treated BMDMs showed fewer pathological lesions than those injected with vehicle-treated BMDMs in endotoxic shock. In addition, we found that activation of TLR4 by LPS could endocytose CD11b and activation of CD11b by LA1 could endocytose TLR4 in vitro and in vivo, subsequently blocking the binding of LPS with TLR4. Based on these findings, we concluded that LA1-induced activation of CD11b negatively regulates LPS-induced pro-inflammatory response in macrophages and subsequently protects mice from endotoxin shock by partially blocking LPS-TLR4 interaction. Our study provides a new insight into the role of CD11b in the pathogenesis of inflammatory diseases.
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Affiliation(s)
- Xiaoying Yao
- Institute of Immunology and Molecular Medicine, Jining Medical University, Shandong, China.,School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Shandong, China
| | - Guanjun Dong
- Institute of Immunology and Molecular Medicine, Jining Medical University, Shandong, China
| | - Yuzhen Zhu
- Institute of Immunology and Molecular Medicine, Jining Medical University, Shandong, China
| | - Fenglian Yan
- Institute of Immunology and Molecular Medicine, Jining Medical University, Shandong, China
| | - Hui Zhang
- Institute of Immunology and Molecular Medicine, Jining Medical University, Shandong, China
| | - Qun Ma
- Institute of Immunology and Molecular Medicine, Jining Medical University, Shandong, China
| | - Xingqin Fu
- Institute of Immunology and Molecular Medicine, Jining Medical University, Shandong, China
| | - Xuehui Li
- Institute of Immunology and Molecular Medicine, Jining Medical University, Shandong, China
| | - QingQing Zhang
- Institute of Immunology and Molecular Medicine, Jining Medical University, Shandong, China
| | - Junfeng Zhang
- Institute of Immunology and Molecular Medicine, Jining Medical University, Shandong, China
| | - Hui Shi
- Institute of Immunology and Molecular Medicine, Jining Medical University, Shandong, China
| | - Zhaochen Ning
- Institute of Immunology and Molecular Medicine, Jining Medical University, Shandong, China
| | - Jun Dai
- Institute of Immunology and Molecular Medicine, Jining Medical University, Shandong, China
| | - Zhihua Li
- Institute of Immunology and Molecular Medicine, Jining Medical University, Shandong, China
| | - Chunxia Li
- Institute of Immunology and Molecular Medicine, Jining Medical University, Shandong, China
| | - Bo Wang
- Institute of Immunology and Molecular Medicine, Jining Medical University, Shandong, China
| | - Jiankuo Ming
- Institute of Immunology and Molecular Medicine, Jining Medical University, Shandong, China
| | - Yonghong Yang
- Department of Central Laboratory, Affiliated Hospital of Jining Medical University, Jining, Shandong, China
| | - Feng Hong
- Department of Central Laboratory, Affiliated Hospital of Jining Medical University, Jining, Shandong, China
| | - Xiangzhi Meng
- Department of Microbiology, Immunology and Molecular Genetics, University of Texas Health Science Center at San Antonio, San Antonio, TX, United States
| | - Huabao Xiong
- Department of Medicine, Icahn School of Medicine at Mount Sinai, Immunology Institute, New York, NY, United States
| | - Chuanping Si
- Institute of Immunology and Molecular Medicine, Jining Medical University, Shandong, China
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Yao X, Dong G, Zhu Y, Yan F, Zhang H, Ma Q, Fu X, Li X, Zhang Q, Zhang J, Shi H, Ning Z, Dai J, Li Z, Li C, Wang B, Ming J, Yang Y, Hong F, Meng X, Xiong H, Si C. Leukadherin-1-Mediated Activation of CD11b Inhibits LPS-Induced Pro-inflammatory Response in Macrophages and Protects Mice Against Endotoxic Shock by Blocking LPS-TLR4 Interaction. Front Immunol 2019. [PMID: 30809230 DOI: 10.3389/fimmu.2019.0021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023] Open
Abstract
Dysregulation of macrophage has been demonstrated to contribute to aberrant immune responses and inflammatory diseases. CD11b, expressed on macrophages, plays a critical role in regulating pathogen recognition, phagocytosis, and cell survival. In the present study, we explored the effect of leukadherin-1 (LA1), an agonist of CD11b, on regulating LPS-induced pro-inflammatory response in macrophages and endotoxic shock. Intriguingly, we found that LA1 could significantly reduce mortalities of mice and alleviated pathological injury of liver and lung in endotoxic shock. In vivo studies showed that LA1-induced activation of CD11b significantly inhibited the LPS-induced pro-inflammatory response in macrophages of mice. Moreover, LA1-induced activation of CD11b significantly inhibited LPS/IFN-γ-induced pro-inflammatory response in macrophages by inhibiting MAPKs and NF-κB signaling pathways in vitro. Furthermore, the mice injected with LA1-treated BMDMs showed fewer pathological lesions than those injected with vehicle-treated BMDMs in endotoxic shock. In addition, we found that activation of TLR4 by LPS could endocytose CD11b and activation of CD11b by LA1 could endocytose TLR4 in vitro and in vivo, subsequently blocking the binding of LPS with TLR4. Based on these findings, we concluded that LA1-induced activation of CD11b negatively regulates LPS-induced pro-inflammatory response in macrophages and subsequently protects mice from endotoxin shock by partially blocking LPS-TLR4 interaction. Our study provides a new insight into the role of CD11b in the pathogenesis of inflammatory diseases.
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Affiliation(s)
- Xiaoying Yao
- Institute of Immunology and Molecular Medicine, Jining Medical University, Shandong, China
- School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Shandong, China
| | - Guanjun Dong
- Institute of Immunology and Molecular Medicine, Jining Medical University, Shandong, China
| | - Yuzhen Zhu
- Institute of Immunology and Molecular Medicine, Jining Medical University, Shandong, China
| | - Fenglian Yan
- Institute of Immunology and Molecular Medicine, Jining Medical University, Shandong, China
| | - Hui Zhang
- Institute of Immunology and Molecular Medicine, Jining Medical University, Shandong, China
| | - Qun Ma
- Institute of Immunology and Molecular Medicine, Jining Medical University, Shandong, China
| | - Xingqin Fu
- Institute of Immunology and Molecular Medicine, Jining Medical University, Shandong, China
| | - Xuehui Li
- Institute of Immunology and Molecular Medicine, Jining Medical University, Shandong, China
| | - QingQing Zhang
- Institute of Immunology and Molecular Medicine, Jining Medical University, Shandong, China
| | - Junfeng Zhang
- Institute of Immunology and Molecular Medicine, Jining Medical University, Shandong, China
| | - Hui Shi
- Institute of Immunology and Molecular Medicine, Jining Medical University, Shandong, China
| | - Zhaochen Ning
- Institute of Immunology and Molecular Medicine, Jining Medical University, Shandong, China
| | - Jun Dai
- Institute of Immunology and Molecular Medicine, Jining Medical University, Shandong, China
| | - Zhihua Li
- Institute of Immunology and Molecular Medicine, Jining Medical University, Shandong, China
| | - Chunxia Li
- Institute of Immunology and Molecular Medicine, Jining Medical University, Shandong, China
| | - Bo Wang
- Institute of Immunology and Molecular Medicine, Jining Medical University, Shandong, China
| | - Jiankuo Ming
- Institute of Immunology and Molecular Medicine, Jining Medical University, Shandong, China
| | - Yonghong Yang
- Department of Central Laboratory, Affiliated Hospital of Jining Medical University, Jining, Shandong, China
| | - Feng Hong
- Department of Central Laboratory, Affiliated Hospital of Jining Medical University, Jining, Shandong, China
| | - Xiangzhi Meng
- Department of Microbiology, Immunology and Molecular Genetics, University of Texas Health Science Center at San Antonio, San Antonio, TX, United States
| | - Huabao Xiong
- Department of Medicine, Icahn School of Medicine at Mount Sinai, Immunology Institute, New York, NY, United States
| | - Chuanping Si
- Institute of Immunology and Molecular Medicine, Jining Medical University, Shandong, China
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