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Falcão KVG, Azevedo RDSD, Lima LRAD, Bezerra RDS. A rapid protocol for inducing acute pancreatitis in zebrafish models. Comp Biochem Physiol C Toxicol Pharmacol 2024; 283:109958. [PMID: 38857668 DOI: 10.1016/j.cbpc.2024.109958] [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: 02/20/2024] [Revised: 05/19/2024] [Accepted: 06/06/2024] [Indexed: 06/12/2024]
Abstract
Acute pancreatitis (AP) is an inflammatory disorder that occurs in the exocrine pancreas associated with tissue injury and necrosis. Experimental models of AP typically involve rodents, such as rats or mice. However, rodents exhibit divergent pathophysiological responses after the establishment of AP between themselves and in comparison, with human. The experiments conducted for this manuscript aimed to standardize a new AP model in zebrafish and validate it. Here, we provide a protocol for inducing AP in zebrafish through intraperitoneal injections of synthetic caerulein. Details are provided for solution preparation, pre-injection procedures, injection technique, and monitoring animal survival. Subsequently, validation was performed through biochemical and histological analyses of pancreatic tissue. The administered dose of caerulein for AP induction was 10 μg/kg applied four times in the intraperitoneal region. The histological validation study demonstrated the presence of necrosis within the first 12 h post-injection, accompanied by an excess of zymogen granules in the extracellular milieu. These observations align with those reported in conventional rodent models. We have standardized and validated the AP model in zebrafish. This model can contribute to preclinical and clinical studies of new drugs for AP treatment. Therefore, this novel model expands the toolkit for exploring faster and more effective preventive and therapeutic strategies for AP.
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Affiliation(s)
| | | | - Luiza Rayanna Amorim de Lima
- Programa de Pós-Graduação em Saúde e Desenvolvimento Socioambiental, Universidade de Pernambuco - UPE, Campus Garanhuns, Brazil
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Geng H, Zhang H, Cheng L, Dong S. Sivelestat ameliorates sepsis-induced myocardial dysfunction by activating the PI3K/AKT/mTOR signaling pathway. Int Immunopharmacol 2024; 128:111466. [PMID: 38176345 DOI: 10.1016/j.intimp.2023.111466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Revised: 12/07/2023] [Accepted: 12/27/2023] [Indexed: 01/06/2024]
Abstract
The cardioprotective role of sivelestat, a neutrophil elastase inhibitor, has already been demonstrated, but the underlying molecular mechanism remains unclear. This study aimed to explore the mechanism underlying the role of sivelestat in sepsis-induced myocardial dysfunction (SIMD). We found that sivelestat treatment remarkably improved the viability and suppressed the apoptosis of lipopolysaccharide (LPS)-stimulated H9c2 cells. In vivo, sivelestat treatment was associated with an improved survival rate; reduced serum cTnT, TNF-α, IL-1β levels and myocardial TNF-α and IL-1β levels; ameliorated cardiac function and structure; and reduced cardiomyocyte apoptosis. Moreover, sivelestat treatment substantially increased Bcl-2 expression and suppressed caspase-3 and Bax expression in LPS-induced H9c2 cells and in the heart tissues of septic rats. Furthermore, the phosphatidylinositol 3-kinase/protein kinase B/mechanistic target of rapamycin (PI3K/AKT/mTOR) signaling pathway was activated both in vitro and in vivo. The protective effect of sivelestat against SIMD was reversed by the PI3K inhibitor LY294002. In summary, sivelestat can protect against SIMD by activating the PI3K/AKT/mTOR signaling pathway.
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Affiliation(s)
- Hongyu Geng
- Department of Intensive Care Unit, Baoding First Central Hospital, Baoding, China
| | - Hongbo Zhang
- Department of General Surgery, Baoding First Central Hospital, Baoding, China
| | - Lianfang Cheng
- Department of Intensive Care Unit, Baoding First Central Hospital, Baoding, China
| | - Shimin Dong
- Department of Emergency, The Third Hospital of Hebei Medical University, Shijiazhuang, China.
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Ding Q, Wang Y, Yang C, Li X, Yu X. Clinical Utility of the Sivelestat for the Treatment of ALI/ARDS: Moving on in the Controversy? INTENSIVE CARE RESEARCH 2023; 3:12-17. [PMID: 36911225 PMCID: PMC9412801 DOI: 10.1007/s44231-022-00012-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 07/27/2022] [Indexed: 01/08/2023]
Abstract
Acute respiratory distress syndrome (ARDS) is a serious condition that can arise following direct or indirect acute lung injury (ALI). It is heterogeneous and has a high mortality rate. Supportive care is the mainstay of treatment and there is no definitive pharmacological treatment as yet. In nonclinical studies, neutrophil elastase inhibitor sivelestat appears to show benefit in ARDS without inhibiting the host immune defense in cases of infection. In clinical studies, the efficacy of sivelestat in the treatment of ARDS remains controversial. The currently available evidence suggests that sivelestat may show some benefit in the treatment of ARDS, although large, randomized controlled trials are needed in specific pathophysiological conditions to explore these potential benefits.
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Affiliation(s)
- Qiongli Ding
- Critical Medicine Center, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, 830054 Xinjiang Uygur Autonomous Region China.,Xinjiang Medical University, Urumqi, 830054 Xinjiang Uygur Autonomous Region China
| | - Yi Wang
- Critical Medicine Center, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, 830054 Xinjiang Uygur Autonomous Region China.,Xinjiang Medical University, Urumqi, 830054 Xinjiang Uygur Autonomous Region China.,Xinjiang Uygur Autonomous Region Institute of Critical Medicine, Urumqi, 830054 Xinjiang Uygur Autonomous Region China
| | - Chunbo Yang
- Critical Medicine Center, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, 830054 Xinjiang Uygur Autonomous Region China.,Xinjiang Medical University, Urumqi, 830054 Xinjiang Uygur Autonomous Region China.,Xinjiang Uygur Autonomous Region Institute of Critical Medicine, Urumqi, 830054 Xinjiang Uygur Autonomous Region China
| | - Xiang Li
- Critical Medicine Center, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, 830054 Xinjiang Uygur Autonomous Region China.,Xinjiang Uygur Autonomous Region Institute of Critical Medicine, Urumqi, 830054 Xinjiang Uygur Autonomous Region China
| | - Xiangyou Yu
- Critical Medicine Center, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, 830054 Xinjiang Uygur Autonomous Region China.,Xinjiang Medical University, Urumqi, 830054 Xinjiang Uygur Autonomous Region China.,Xinjiang Uygur Autonomous Region Institute of Critical Medicine, Urumqi, 830054 Xinjiang Uygur Autonomous Region China
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Role of neutrophil extracellular traps in inflammatory evolution in severe acute pancreatitis. Chin Med J (Engl) 2022; 135:2773-2784. [PMID: 36729096 PMCID: PMC9945416 DOI: 10.1097/cm9.0000000000002359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Indexed: 02/03/2023] Open
Abstract
ABSTRACT Severe acute pancreatitis (SAP) is a life-threatening acute abdominal disease with two peaks of death: the first in the early stage, characterized by systemic inflammatory response-associated organ failure; and the second in the late stage, characterized by infectious complications. Neutrophils are the main immune cells participating in the whole process of SAP. In addition to the traditional recognition of neutrophils as the origination of chemokine and cytokine cascades or phagocytosis and degranulation of pathogens, neutrophil extracellular traps (NETs) also play an important roles in inflammatory reactions. We reviewed the role of NETs in the occurrence and development of SAP and its fatal complications, including multiple organs injury, infected pancreatic necrosis, and thrombosis. This review provides novel insights into the involvement of NETs throughout the entire process of SAP, showing that targeting NETs might be a promising strategy in SAP treatment. However, precision therapeutic options targeting NETs in different situations require further investigation.
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Comparing the preventive effect of sodium hydrosulfide, leptin, and curcumin against L-arginine induced acute pancreatitis in rats: role of corticosterone and inducible nitric oxide synthase. Endocr Regul 2020; 53:221-230. [PMID: 31734652 DOI: 10.2478/enr-2019-0022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
OBJECTIVES Acute pancreatitis (AP) is a life-threatening condition. Using antioxidants in AP is insufficient and conflicting. Therefore, this study compared the effect of hydrogen sulfide (H2S) donor, sodium hydrosulfide (NaHS), leptin or curcumin pretreatment on AP induced by L-arginine. METHODS Forty adult male rats were used and classified into: 1) control; 2) AP group [each rat was intraperitoneally (i.p.) injected with 2 doses of L-arginine of 250 mg/100 g body weight (b.w.) with an interval of 1 h]; 3) NaHS+AP group (each rat was i.p. injected with 10 mg/kg b.w. of NaHS 1 h before induction of AP); 4) leptin+AP group (each rat was pretreated with 10 μg/kg b.w. of leptin 30 min before induction of AP; and 5) curcumin+AP group (in which rats were i.p. injected with 150 mg/kg b.w. of curcumin 30 min before induction of AP). Serum amylase, lipase, nitric oxide (NO), tumor necrosis factor alpha (TNF-α), and corticosterone (CORT) levels were assayed. In addition, pancreatic tissues were obtained for histopathological examination and malondialde-hyde (MDA), total antioxidant capacity (TAC), and inducible nitric oxide synthase (iNOS) levels were measured. RESULTS All AP treated groups showed significant decrease in serum levels of pancreatic enzymes, NO, and TNF-α, and pancreatic MDA and iNOS levels, while TAC levels were significantly increased. NaHS caused more limitation of inflammation than leptin and curcumin by affecting iNOS. Leptin was more potent than curcumin due to the stimulatory effect of leptin on glucocorticoid release to counteract inflammation. CONCLUSIONS NaHS was more effective in AP amelioration than the leptin and curcumin.
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Silva-Vaz P, Abrantes AM, Castelo-Branco M, Gouveia A, Botelho MF, Tralhão JG. Murine Models of Acute Pancreatitis: A Critical Appraisal of Clinical Relevance. Int J Mol Sci 2019; 20:E2794. [PMID: 31181644 PMCID: PMC6600324 DOI: 10.3390/ijms20112794] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2019] [Revised: 06/04/2019] [Accepted: 06/05/2019] [Indexed: 12/15/2022] Open
Abstract
Acute pancreatitis (AP) is a severe disease associated with high morbidity and mortality. Clinical studies can provide some data concerning the etiology, pathophysiology, and outcomes of this disease. However, the study of early events and new targeted therapies cannot be performed on humans due to ethical reasons. Experimental murine models can be used in the understanding of the pancreatic inflammation, because they are able to closely mimic the main features of human AP, namely their histologic glandular changes and distant organ failure. These models continue to be important research tools for the reproduction of the etiological, environmental, and genetic factors associated with the pathogenesis of this inflammatory pathology and the exploration of novel therapeutic options. This review provides an overview of several murine models of AP. Furthermore, special focus is made on the most frequently carried out models, the protocols used, and their advantages and limitations. Finally, examples are provided of the use of these models to improve knowledge of the mechanisms involved in the pathogenesis, identify new biomarkers of severity, and develop new targeted therapies.
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Affiliation(s)
- Pedro Silva-Vaz
- Health Sciences Research Centre, University of Beira Interior (CICS-UBI), 6200-506 Covilhã, Portugal.
- General Surgery Department, Unidade Local de Saúde de Castelo Branco, 6000-085 Castelo Branco, Portugal.
- Faculty of Health Sciences, University of Beira Interior, 6200-506 Covilhã, Portugal.
| | - Ana Margarida Abrantes
- Coimbra Institute for Clinical and Biomedical Research (iCBR) area of Environment Genetics and Oncobiology (CIMAGO), Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal.
- Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal.
- Biophysics and Biomathematics Institute, IBILI-Faculty of Medicine of University of Coimbra, 3000-548 Coimbra, Portugal.
| | - Miguel Castelo-Branco
- Health Sciences Research Centre, University of Beira Interior (CICS-UBI), 6200-506 Covilhã, Portugal.
- Faculty of Health Sciences, University of Beira Interior, 6200-506 Covilhã, Portugal.
| | - António Gouveia
- General Surgery Department, Unidade Local de Saúde de Castelo Branco, 6000-085 Castelo Branco, Portugal.
- Faculty of Health Sciences, University of Beira Interior, 6200-506 Covilhã, Portugal.
| | - Maria Filomena Botelho
- Coimbra Institute for Clinical and Biomedical Research (iCBR) area of Environment Genetics and Oncobiology (CIMAGO), Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal.
- Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal.
- Biophysics and Biomathematics Institute, IBILI-Faculty of Medicine of University of Coimbra, 3000-548 Coimbra, Portugal.
| | - José Guilherme Tralhão
- Coimbra Institute for Clinical and Biomedical Research (iCBR) area of Environment Genetics and Oncobiology (CIMAGO), Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal.
- Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal.
- Biophysics and Biomathematics Institute, IBILI-Faculty of Medicine of University of Coimbra, 3000-548 Coimbra, Portugal.
- Surgery Department, Centro Hospitalar e Universitário de Coimbra, 3000-075 Coimbra, Portugal.
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Edgington-Mitchell LE, Barlow N, Aurelio L, Samha A, Szabo M, Graham B, Bunnett N. Fluorescent diphenylphosphonate-based probes for detection of serine protease activity during inflammation. Bioorg Med Chem Lett 2017; 27:254-260. [PMID: 27923620 PMCID: PMC10069441 DOI: 10.1016/j.bmcl.2016.11.064] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Revised: 11/21/2016] [Accepted: 11/22/2016] [Indexed: 12/29/2022]
Abstract
Activity-based probes are small molecules that covalently bind to the active site of a protease in an activity-dependent manner. We synthesized and characterized two fluorescent activity-based probes that target serine proteases with trypsin-like or elastase-like activity. We assessed the selectivity and potency of these probes against recombinant enzymes and demonstrated that while they are efficacious at labeling active proteases in complex protein mixtures in vitro, they are less valuable for in vivo studies. We used these probes to evaluate serine protease activity in two mouse models of acute inflammation, including pancreatitis and colitis. As anticipated, the activity of trypsin-like proteases was increased during pancreatitis. Levels of elastase-like proteases were low in pancreatic lysates and colonic luminal fluids, whether healthy or inflamed. Exogenously added recombinant neutrophil elastase was inhibited upon incubation with these samples, an effect that was augmented in inflamed samples compared to controls. These data suggest that endogenous inhibitors and elastase-degrading proteases are upregulated during inflammation.
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Affiliation(s)
| | - Nicholas Barlow
- Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, Australia
| | - Luigi Aurelio
- Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, Australia
| | - Aminath Samha
- Drug Discovery Biology, Monash University, Parkville, VIC, Australia
| | - Monika Szabo
- Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, Australia
| | - Bim Graham
- Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, Australia.
| | - Nigel Bunnett
- Drug Discovery Biology, Monash University, Parkville, VIC, Australia; Department of Pharmacology and Therapeutics, University of Melbourne, Parkville, VIC, Australia.
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The neutrophil elastase inhibitor, sivelestat, attenuates sepsis-related kidney injury in rats. Int J Mol Med 2016; 38:767-75. [PMID: 27430552 PMCID: PMC4990314 DOI: 10.3892/ijmm.2016.2665] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Accepted: 06/24/2016] [Indexed: 12/18/2022] Open
Abstract
Sepsis-induced acute kidney injury (AKI) represents a major cause of mortality in intensive care units. Sivelestat, a selective inhibitor of neutrophil elastase (NE), can attenuate sepsis-related acute lung injury. However, whether sivelestat can preserve kidney function during sepsis remains unclear. In this study, we thus examined the effects of sivelestat on sepsis-related AKI. Cecal ligation and puncture (CLP) was performed to induce multiple bacterial infection in male Sprague-Dawley rats, and subsequently, 50 or 100 mg/kg sivelestat were administered by intraperitoneal injection immediately after the surgical procedure. In the untreated rats with sepsis, the mean arterial pressure (MAP) and glomerular filtration rate (GFR) were decreased, whereas serum blood urea nitrogen (BUN) and neutrophil gelatinase-associated lipocalin (NGAL) levels were increased. We found that sivelestat promoted the survival of the rats with sepsis, restored the impairment of MAP and GFR, and inhibited the increased BUN and NGAL levels; specifically, the higher dose was more effective. In addition, sivelestat suppressed the CLP-induced macrophage infiltration, the overproduction of pro-inflammatory mediators (tumor necrosis factor-α, interleukin-1β, high-mobility group box 1 and inducible nitric oxide synthase) and serine/threonine kinase (Akt) pathway activation in the rats. Collectively, our data suggest that the inhibition of NE activity with the inhibitor, sivelestat, is beneficial in ameliorating sepsis-related kidney injury.
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Shamoon M, Deng Y, Chen YQ, Bhatia M, Sun J. Therapeutic implications of innate immune system in acute pancreatitis. Expert Opin Ther Targets 2015; 20:73-87. [PMID: 26565751 DOI: 10.1517/14728222.2015.1077227] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
INTRODUCTION Acute pancreatitis (AP) is an inflammatory disorder of the pancreas encompassing a cascade of cellular and molecular events. It starts from premature activation of zymogens with the involvement of innate immune system to a potential systemic inflammatory response and multiple organ failure. Leukocytes are the major cell population that participate in the propagation of the disease. Current understanding of the course of AP is still far from complete, limiting treatment options mostly to conservative supportive care. Emerging evidence has pointed to modulation of the immune system for strategic therapeutic development, by mitigating the inflammatory response and severity of AP. In the current review, we have focused on the role of innate immunity in the condition and highlighted therapeutics targeting it for treatment of this challenging disease. AREAS COVERED The current review has aimed to elaborate in-depth understanding of specific roles of innate immune cells, derived mediators and inflammatory pathways that are involved in AP. Summarizing the recent therapeutics and approaches applied experimentally that target immune responses to attenuate AP. EXPERT OPINION The current state of knowledge on AP, limitations of presently available therapeutic approaches and the promise of therapeutic implications of innate immune system in AP are discussed.
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Affiliation(s)
- Muhammad Shamoon
- a 1 Jiangnan University, School of Food Science and Technology, The Synergetic Innovation Center of Food Safety and Nutrition, State Key Laboratory of Food Science and Technology , Wuxi, Jiangsu, China
| | - Yuanyuan Deng
- a 1 Jiangnan University, School of Food Science and Technology, The Synergetic Innovation Center of Food Safety and Nutrition, State Key Laboratory of Food Science and Technology , Wuxi, Jiangsu, China
| | - Yong Q Chen
- a 1 Jiangnan University, School of Food Science and Technology, The Synergetic Innovation Center of Food Safety and Nutrition, State Key Laboratory of Food Science and Technology , Wuxi, Jiangsu, China
| | - Madhav Bhatia
- b 2 University of Otago, Inflammation Research Group, Department of Pathology , Christchurch, 2 Riccarton Avenue, P.O. Box 4345, Christchurch 8140, New Zealand
| | - Jia Sun
- a 1 Jiangnan University, School of Food Science and Technology, The Synergetic Innovation Center of Food Safety and Nutrition, State Key Laboratory of Food Science and Technology , Wuxi, Jiangsu, China
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Patankar YR, Mabaera R, Berwin B. Differential ASC requirements reveal a key role for neutrophils and a noncanonical IL-1β response to Pseudomonas aeruginosa. Am J Physiol Lung Cell Mol Physiol 2015; 309:L902-13. [PMID: 26472815 DOI: 10.1152/ajplung.00228.2015] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Accepted: 08/17/2015] [Indexed: 12/17/2022] Open
Abstract
The NLRC4 inflammasome is responsible for IL-1β processing by macrophages in response to Pseudomonas aeruginosa infection. We therefore hypothesized that mice that lack ASC, an NLRC4 inflammasome adaptor protein necessary for in vitro IL-1β production by macrophages, would be preferentially protected from a hyperinflammatory lethal challenge that is dependent on bacterial type three secretion system (T3SS) activity. We report herein that lack of ASC does not confer preferential protection in response to P. aeruginosa acute infection and that ASC(-/-) mice are capable of producing robust amounts of IL-1β comparable with C57BL/6 mice. We now identify that neutrophils represent the ASC-independent source of IL-1β production during the acute phases of infection both in models of acute pneumonia and peritonitis. Consequently, depletion of neutrophils in ASC(-/-) mice leads to a marked deficit in IL-1β production in vivo. The pulmonary neutrophil IL-1β response is predominantly dependent on caspase-1, which contrasts with data derived from ocular infection. These studies therefore identify a noncanonical mechanism of IL-1β production by neutrophils independent of ASC and demonstrate the first physiological contribution of neutrophils as an important source of IL-1β in response to acute P. aeruginosa infection during acute pneumonia and peritonitis.
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Affiliation(s)
- Yash R Patankar
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Lebanon, New Hampshire
| | - Rodwell Mabaera
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Lebanon, New Hampshire
| | - Brent Berwin
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Lebanon, New Hampshire
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Zhang Y, Wang Y, Lu M, Qiao X, Sun B, Zhang W, Xue D. Modular analysis of bioinformatics demonstrates a critical role for NF-κB in macrophage activation. Inflammation 2015; 37:1240-53. [PMID: 24577727 DOI: 10.1007/s10753-014-9851-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
To achieve the goal of identifying the gene groups that regulated macrophage activation, a total of 925 differentially expressed genes of activated macrophages were found at the intersection of the three series (GSE5099-1, GSE5099-2, and GSE18686) from the Gene Expression Omnibus (GEO) database, and a sub-network was constructed based on the protein-protein interaction (PPI) network. Four communities (K = 3) were identified from the sub-network using the CFinder software. Community 1 was considered as the gene group of interest base on the heat map. GO-BP and KEGG enrichment analysis with the DAVID software showed that the functions of the 14 genes in community 1 were mainly related to the NF-κB pathway. A network was constructed using the Cytoscape software. The diagram showed that STAT1, NFKBIA, NFKAIB, JUN, and RELA were the key genes in the regulation of macrophage activation. Among these genes, RELA (NF-κB P65) was an important member of the NF-κB family, while NFKBIA (IκBα) and NFKAIB (IκBβ) were the inhibitory factors of NF-κB. Small molecules capable of regulating these five genes were identified via the CMap software, and a network diagram was generated using the Cytoscape software to provide a reference for the development of new drugs that regulate macrophage activation.
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Affiliation(s)
- Yingmei Zhang
- Central Laboratory, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, Heilongjiang, People's Republic of China
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The protective effects of Shen-Fu injection on experimental acute pancreatitis in a rat model. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2014; 2014:248786. [PMID: 24738018 PMCID: PMC3964904 DOI: 10.1155/2014/248786] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2013] [Revised: 01/24/2014] [Accepted: 01/31/2014] [Indexed: 01/03/2023]
Abstract
Objectives. In the present study, we investigated the protective effects of Shen-Fu injection (SFI) on a caerulein-induced rat pancreatitis (AP) model.
Methods. SFI was given to rats in the SFI treated group through intraperitoneal injection. Blood and pancreas samples were collected for serological and histopathological studies. Results. Our results showed that AP caused significant decrease in tissue glutathione (GSH) and serum IL-4 and IL-10, while pancreatic malondialdehyde (MDA) and myeloperoxidase (MPO) were increased. Furthermore, TNF-α, IL-1β, amylase, and lipase levels were also significantly increased. On the other hand, SFI treatment reserved all these biochemical indices as well as histopathologic alterations that were induced by caerulein.
Conclusion. Our findings suggest that the SFI protects against caerulein-induced AP in rats via modulation of cytokines, oxidative stress, and Nuclear Factor-kappa B (NF-κB) activity.
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