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Guo J, Chen X, Wang C, Ruan F, Xiong Y, Wang L, Abdel-Razek O, Meng Q, Shahbazov R, Cooney RN, Wang G. LIRAGLUTIDE ALLEVIATES ACUTE LUNG INJURY AND MORTALITY IN PNEUMONIA-INDUCED SEPSIS THROUGH REGULATING SURFACTANT PROTEIN EXPRESSION AND SECRETION. Shock 2024; 61:601-610. [PMID: 38150354 PMCID: PMC11009087 DOI: 10.1097/shk.0000000000002285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2023]
Abstract
ABSTRACT Glucagon-like peptide 1 (GLP-1) analogs are used to treat type 2 diabetes, and they can regulate insulin secretion, energy homeostasis, inflammation, and immune cell function. This study sought to determine whether the GLP-1 analog liraglutide exerts a beneficial action in an acute lung injury model of pneumonia-induced sepsis. Methods: Wild-type FVB/NJ mice (n = 114) were infected by intratracheal injection with Pseudomonas aeruginosa Xen5 (4 × 10 4 CFU/mouse) or an equal volume (50 μL) of saline (control) with or without a subcutaneous injection of liraglutide (2 mg/kg, 30 min after infection). Mice were killed 24 h after infection. Lung tissues and BALF were analyzed. In separate experiments, the dynamic growth of bacteria and animal mortality was monitored using in vivo imaging system within 48 h after infection. In addition, primary lung alveolar type II cells isolated from mice were used to study the mechanism of liraglutide action. Result: Liraglutide improved survival ( P < 0.05), decreased bacterial loads in vivo , and reduced lung injury scores ( P < 0.01) in septic mice. Liraglutide-treated mice showed decreased levels of inflammatory cells ( P < 0.01) and proinflammatory cytokines (TNF-α and IL-6) ( P < 0.01) in the lung compared with septic controls. Liraglutide significantly increased pulmonary surfactant proteins (SP-A and SP-B) expression/secretion ( P < 0.01) and phospholipid secretion ( P < 0.01) in vivo . Primary alveolar type II cells pretreated with liraglutide improved SP-A and SP-B expression after LPS exposure ( P < 0.01). Conclusion: Liraglutide attenuates mortality and lung inflammation/injury in pneumonia-induced sepsis. The increased surfactant expression/secretion and anti-inflammatory effects of liraglutide represent potential mechanisms by GLP-1 agonists potentiate host defense and maintain alveolar respiratory function in acute lung injury.
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Affiliation(s)
- Junping Guo
- Department of Surgery, SUNY Upstate Medical University, Syracuse, NY 13210, USA
- Rainbowfish Rehabilitation & Nursing School, Hangzhou Vocational & Technical College, Hangzhou 310018, China
| | - Xinghua Chen
- Department of Surgery, SUNY Upstate Medical University, Syracuse, NY 13210, USA
- Department of Nephrology, Wuhan University, Renmin Hospital, Wuhan 430060, China
| | - Cole Wang
- Department of Surgery, SUNY Upstate Medical University, Syracuse, NY 13210, USA
| | - Feng Ruan
- Department of Surgery, SUNY Upstate Medical University, Syracuse, NY 13210, USA
| | - Yunhe Xiong
- Department of Surgery, SUNY Upstate Medical University, Syracuse, NY 13210, USA
| | - Lijun Wang
- Department of Endocrinology, Zhejiang Provincial People’s Hospital, Hangzhou 310014, China
| | - Osama Abdel-Razek
- Department of Surgery, SUNY Upstate Medical University, Syracuse, NY 13210, USA
| | - Qinghe Meng
- Department of Surgery, SUNY Upstate Medical University, Syracuse, NY 13210, USA
| | - Rauf Shahbazov
- Department of Surgery, SUNY Upstate Medical University, Syracuse, NY 13210, USA
| | - Robert N Cooney
- Department of Surgery, SUNY Upstate Medical University, Syracuse, NY 13210, USA
| | - Guirong Wang
- Department of Surgery, SUNY Upstate Medical University, Syracuse, NY 13210, USA
- Department of Microbiology and Immunology, SUNY Upstate Medical University, Syracuse, NY 13210, USA
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Casanova NG, De Armond RL, Sammani S, Sun X, Sun B, Kempf C, Bime C, Garcia JGN, Parthasarathy S. Circadian disruption dysregulates lung gene expression associated with inflammatory lung injury. Front Immunol 2024; 15:1348181. [PMID: 38558813 PMCID: PMC10979643 DOI: 10.3389/fimmu.2024.1348181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Accepted: 01/30/2024] [Indexed: 04/04/2024] Open
Abstract
Rationale Circadian systems drive the expression of multiple genes in nearly all cells and coordinate cellular-, tissue-, and system-level processes that are critical to innate immunity regulation. Objective We examined the effects of circadian rhythm disorganization, produced by light shift exposure, on innate immunity-mediated inflammatory lung responses including vascular permeability and gene expression in a C57BL/6J murine model of inflammatory lung injury. Methods A total of 32 C57BL/6J mice were assigned to circadian phase shifting (CPS) with intratracheal phosphate-buffered saline (PBS), CPS with intratracheal lipopolysaccharide (LPS), control (normal lighting) condition with intratracheal PBS, and control condition with intratracheal LPS. Bronchoalveolar lavage (BAL) protein, cell counts, tissue immunostaining, and differentially expressed genes (DEGs) were measured in lung tissues at 2 and 10 weeks. Measurements and results In mice exposed to both CPS and intratracheal LPS, both BAL protein and cell counts were increased at both 2 and 10 weeks compared to mice exposed to LPS alone. Multiple DEGs were identified in CPS-LPS-exposed lung tissues compared to LPS alone and were involved in transcriptional pathways associated with circadian rhythm disruption, regulation of lung permeability, inflammation with Rap1 signaling, and regulation of actin cytoskeleton. The most dysregulated pathways included myosin light chain kinase, MAP kinase, profilin 2, fibroblast growth factor receptor, integrin b4, and p21-activated kinase. Conclusion Circadian rhythm disruption results in exacerbated immune response and dysregulated expression of cytoskeletal genes involved in the regulation of epithelial and vascular barrier integrity-the mechanistic underpinnings of acute lung injury. Further studies need to explore circadian disorganization as a druggable target.
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Affiliation(s)
- Nancy G. Casanova
- Department of Molecular Medicine, University of Florida Scripps Biomedical Research, Jupiter, FL, United States
| | - Richard L. De Armond
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, United States
- University of Arizona Health Science – Center for Sleep and Circadian Sciences, University of Arizona, Tucson, AZ, United States
| | - Saad Sammani
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, United States
| | - Xiaoguang Sun
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, United States
| | - Belinda Sun
- Department of Pathology, University of Arizona Health Sciences, Tucson, AZ, United States
| | - Carrie Kempf
- Department of Molecular Medicine, University of Florida Scripps Biomedical Research, Jupiter, FL, United States
| | - Christian Bime
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, United States
| | - Joe G. N. Garcia
- Department of Molecular Medicine, University of Florida Scripps Biomedical Research, Jupiter, FL, United States
| | - Sairam Parthasarathy
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ, United States
- University of Arizona Health Science – Center for Sleep and Circadian Sciences, University of Arizona, Tucson, AZ, United States
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Zhou Y, Li QX, Liao ZZ, Liu Y, Ouyang Y, Jiang WJ, Tang MT, Hu JF, Zhang W. Anti-inflammatory effect and component analysis of Chaihu Qingwen granules. JOURNAL OF ETHNOPHARMACOLOGY 2023; 317:116763. [PMID: 37315646 DOI: 10.1016/j.jep.2023.116763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 06/04/2023] [Accepted: 06/07/2023] [Indexed: 06/16/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE As prevalent acute respiratory condition in clinical practice, acute lung injury has a quick start and severe symptoms which can harm patients physically. Chaihu Qingwen granules (CHQW) is a classic formula for the treatment of respiratory diseases. Clinical observation shows that CHQW has good efficacy in treating colds, coughs, and fevers. AIM OF THE STUDY The aim of this study was to investigate the anti-inflammatory effect of CHQW on lipopolysaccharide (LPS)-induced acute lung injury (ALI) model in rats and to explore its potential mechanism, as well as to clarify its substance composition. MATERIALS AND METHODS Male SD rats were randomly divided into the blank group, the model group, the ibuprofen group, the Lianhua Qingwen capsule group and the CHQW group (2, 4 and 8 g/kg, respectively). The LPS-induced acute lung injury (ALI) model in rats was established after pre-administration. The histopathological changes in the lung and the levels of inflammatory factors in bronchoalveolar lavage fluid (BALF) and serum of ALI rats were observed. The inflammation-related proteins toll-like receptor 4 (TLR4), inhibitory kappa B alpha (IκBα), phospho-IκBα (p-IκBα), nuclear-factor-kappa B (NF-κB), and NLR family pyrin domain containing 3(NLRP3) expression levels were measured by western blotting analysis and immunohistochemical analysis. The chemical composition of CHQW was identified by liquid chromatography-quadrupole-time of flight-mass spectrometry (LC-Q-TOF-MS). RESULTS CHQW significantly ameliorated lung tissue pathological injury in LPS-induced ALI rats and decreased the release of inflammatory cytokines (interleukin-1β, interleukin-17 and tumor necrosis factor-α) in BALF and serum. In addition, CHQW decreased the expression of TLR4, p-IκBα and NF-κB proteins, increased the level of IκBα, regulated the TLR4/NF-κB signaling pathway, and inhibited the activation of NLRP3. The chemical components of CHQW were analyzed by LC-Q-TOF-MS, and a total of 48 components were identified by combining information from the literature, mainly flavonoids, organic acids, lignans, iridoids and phenylethanoid glycosides. CONCLUSION The results of this study showed that the pretreatment of CHQW had a strong protective effect on LPS-induced ALI in rats, reducing lung tissue lesions and decreasing inflammatory cytokines released in BALF and serum. The protective mechanism of CHQW may be related to the inhibition of the TLR4/NF-κB signaling pathway and NLRP3 activation. The main active ingredients of CHQW are flavonoids, organic acids, lignans, iridoids and phenylethanoid glycosides.
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Affiliation(s)
- Ying Zhou
- Department of Pharmacy, The First Affiliated Hospital of Nanchang University, Nanchang 330006, China.
| | - Qing-Xian Li
- Department of Pharmacy, The First Affiliated Hospital of Nanchang University, Nanchang 330006, China; School of Pharmacy, Nanchang University, Nanchang 330006, China
| | - Zheng-Zheng Liao
- Department of Pharmacy, The First Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - Yang Liu
- Department of Laboratory Medicine, The First Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - Ying Ouyang
- Department of Pharmacy, The First Affiliated Hospital of Nanchang University, Nanchang 330006, China; School of Pharmacy, Nanchang University, Nanchang 330006, China
| | - Wen-Jing Jiang
- Department of Pharmacy, The First Affiliated Hospital of Nanchang University, Nanchang 330006, China; School of Pharmacy, Nanchang University, Nanchang 330006, China
| | - Meng-Ting Tang
- Department of Pharmacy, The First Affiliated Hospital of Nanchang University, Nanchang 330006, China; School of Pharmacy, Nanchang University, Nanchang 330006, China
| | - Jin-Fang Hu
- Department of Pharmacy, The First Affiliated Hospital of Nanchang University, Nanchang 330006, China.
| | - Wei Zhang
- Department of Respiratory, The First Affiliated Hospital of Nanchang University, Nanchang 330006, China.
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Tirunavalli SK, Pramatha S, Eedara AC, Walvekar KP, Immanuel C, Potdar P, Nayak PG, Chamallamudi MR, Sistla R, Chilaka S, Andugulapati SB. Protective effect of β-glucan on Poly(I:C)-induced acute lung injury/inflammation: Therapeutic implications of viral infections in the respiratory system. Life Sci 2023; 330:122027. [PMID: 37597767 DOI: 10.1016/j.lfs.2023.122027] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 07/27/2023] [Accepted: 08/15/2023] [Indexed: 08/21/2023]
Abstract
AIMS Acute lung inflammation, particularly acute respiratory distress syndrome (ARDS), is caused by a variety of pathogens including bacteria and viruses. β-Glucans have been reported to possess both anti-inflammatory and immunomodulatory properties. The current study evaluated the therapeutic effect of β-glucans on polyinosinic:polycytidylic acid (Poly(I:C)) induced lung inflammation in both hamster and mice models. MAIN METHODS Poly(I:C)-induced ALI/inflammation models were developed in hamsters (2.5 mg/kg) and mice (2 mg/kg) by delivering the Poly(I:C) intratracheally, and followed with and without β-glucan administration. After treatment, lung mechanics were assessed and lung tissues were isolated and analyzed for mRNA/protein expression, and histopathological examinations. KEY FINDINGS Poly(I:C) administration, caused a significant elevation of inflammatory marker's expression in lung tissues and showed abnormal lung mechanics in mice and hamsters. Interestingly, treatment with β-glucan significantly (p < 0.001) reversed the Poly(I:C)-induced inflammatory events and inflammatory markers expression in both mRNA (IL-6, IL-1β, TNF-α, CCL2 and CCL7) and protein levels (TNF-α, CD68, myeloperoxidase, neutrophil elastase, MUC-5Ac and iNOS). Lung functional assays revealed that β-glucan treatment significantly improved lung mechanics. Histopathological analysis showed that β-glucan treatment significantly attenuated the Poly(I:C) induced inflammatory cell infiltration, injury and goblet cell population in lung tissues. Consistent with these findings, β-glucan treatment markedly reduced the number of neutrophils and macrophages in lung tissues. Our findings further demonstrated that β-glucan could reduce inflammation by suppressing the MAPK pathway. SIGNIFICANCE These results suggested that β-glucan may attenuate the pathogenic effects of Poly(I:C)-induced ALI/ARDS via modulating the MAPK pathway, indicating β-glucan as a possible therapeutic agent for the treatment of viral-pulmonary inflammation/injury.
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Affiliation(s)
- Satya Krishna Tirunavalli
- Division of Applied Biology, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 007, Telangana, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201 002, India
| | - Shashidhar Pramatha
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Udupi 576104, Karnataka, India
| | - Abhisheik Chowdary Eedara
- Division of Applied Biology, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 007, Telangana, India
| | - Komal Paresh Walvekar
- Division of Applied Biology, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 007, Telangana, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201 002, India
| | - Christiana Immanuel
- Division of Applied Biology, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 007, Telangana, India
| | - Pooja Potdar
- Division of Applied Biology, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 007, Telangana, India
| | - Pawan G Nayak
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Udupi 576104, Karnataka, India
| | - Mallikarjuna Rao Chamallamudi
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Udupi 576104, Karnataka, India
| | - Ramakrishna Sistla
- Division of Applied Biology, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 007, Telangana, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201 002, India
| | - Sabarinadh Chilaka
- Division of Applied Biology, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 007, Telangana, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201 002, India.
| | - Sai Balaji Andugulapati
- Division of Applied Biology, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 007, Telangana, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201 002, India.
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Liang L, Xu W, Shen A, Fu X, Cen H, Wang S, Lin Z, Zhang L, Lin F, Zhang X, Zhou N, Chang J, Chen Z, Li C, Yu X. Inhibition of YAP1 activity ameliorates acute lung injury through promotion of M2 macrophage polarization. MedComm (Beijing) 2023; 4:e293. [PMID: 37287755 PMCID: PMC10242261 DOI: 10.1002/mco2.293] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 04/27/2023] [Accepted: 05/08/2023] [Indexed: 06/09/2023] Open
Abstract
The balance of M1/M2 macrophage polarization plays an important role in regulating inflammation during acute lung injury (ALI). Yes-associated protein (YAP1) is a key protein in the Hippo-YAP1 signaling pathway and is involved in macrophage polarization. We aimed to determine the role of YAP1 in pulmonary inflammation following ALI and regulation of M1/M2 polarization. Pulmonary inflammation and injury with upregulation of YAP1 were observed in lipopolysaccharide (LPS)-induced ALI. The YAP1 inhibitor, verteporfin, attenuated pulmonary inflammation and improved lung function in ALI mice. Moreover, verteporfin promoted M2 polarization and inhibited M1 polarization in the lung tissues of ALI mice and LPS-treated bone marrow-derived macrophages (BMMs). Additionally, siRNA knockdown confirmed that silencing Yap1 decreased chemokine ligand 2 (CCL2) expression and promoted M2 polarization, whereas silencing large tumor suppressor 1 (Lats1) increased CCL2 expression and induced M1 polarization in LPS-treated BMMs. To investigate the role of inflammatory macrophages in ALI mice, we performed single-cell RNA sequencing of macrophages isolated from the lungs. Thus, verteporfin could activate the immune-inflammatory response, promote the potential of M2 macrophages, and alleviate LPS-induced ALI. Our results reveal a novel mechanism where YAP1-mediated M2 polarization alleviates ALI. Therefore, inhibition of YAP1 may be a target for the treatment of ALI.
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Affiliation(s)
- Lu Liang
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target & Clinical PharmacologyThe State & NMPA Key Laboratory of Respiratory DiseaseSchool of Pharmaceutical Sciences & The Fifth Affiliated HospitalGuangzhou Medical UniversityGuangzhouChina
| | - Wenyan Xu
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target & Clinical PharmacologyThe State & NMPA Key Laboratory of Respiratory DiseaseSchool of Pharmaceutical Sciences & The Fifth Affiliated HospitalGuangzhou Medical UniversityGuangzhouChina
| | - Ao Shen
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target & Clinical PharmacologyThe State & NMPA Key Laboratory of Respiratory DiseaseSchool of Pharmaceutical Sciences & The Fifth Affiliated HospitalGuangzhou Medical UniversityGuangzhouChina
| | - Xiaomei Fu
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target & Clinical PharmacologyThe State & NMPA Key Laboratory of Respiratory DiseaseSchool of Pharmaceutical Sciences & The Fifth Affiliated HospitalGuangzhou Medical UniversityGuangzhouChina
| | - Huiyu Cen
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target & Clinical PharmacologyThe State & NMPA Key Laboratory of Respiratory DiseaseSchool of Pharmaceutical Sciences & The Fifth Affiliated HospitalGuangzhou Medical UniversityGuangzhouChina
| | - Siran Wang
- Department of Preventive DentistryAffiliated Stomatology Hospital of Guangzhou Medical UniversityGuangdong Engineering Research Center of Oral Restoration and ReconstructionGuangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative MedicineGuangzhouChina
| | - Zhongxiao Lin
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target & Clinical PharmacologyThe State & NMPA Key Laboratory of Respiratory DiseaseSchool of Pharmaceutical Sciences & The Fifth Affiliated HospitalGuangzhou Medical UniversityGuangzhouChina
- State Key Laboratory of Quality Research in Chinese MedicineMacau University of Science and TechnologyAvenida WailongTaipaMacauChina
| | - Lingmin Zhang
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target & Clinical PharmacologyThe State & NMPA Key Laboratory of Respiratory DiseaseSchool of Pharmaceutical Sciences & The Fifth Affiliated HospitalGuangzhou Medical UniversityGuangzhouChina
| | - Fangyu Lin
- Department of OphthalmologyB5500 Clinic B1365B Clifton Road NEEmory UniversityAtlantaGeorgiaUSA
| | - Xin Zhang
- State Key Laboratory of Quality Research in Chinese MedicineMacau University of Science and TechnologyAvenida WailongTaipaMacauChina
| | - Na Zhou
- State Key Laboratory of Quality Research in Chinese MedicineMacau University of Science and TechnologyAvenida WailongTaipaMacauChina
| | - Jishuo Chang
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target & Clinical PharmacologyThe State & NMPA Key Laboratory of Respiratory DiseaseSchool of Pharmaceutical Sciences & The Fifth Affiliated HospitalGuangzhou Medical UniversityGuangzhouChina
| | - Zhe‐Sheng Chen
- Department of Pharmaceutical SciencesInstitute for BiotechnologyCollege of Pharmacy and Health SciencesSt. John's UniversityQueensNew YorkUSA
| | - Chuwen Li
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target & Clinical PharmacologyThe State & NMPA Key Laboratory of Respiratory DiseaseSchool of Pharmaceutical Sciences & The Fifth Affiliated HospitalGuangzhou Medical UniversityGuangzhouChina
| | - Xiyong Yu
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target & Clinical PharmacologyThe State & NMPA Key Laboratory of Respiratory DiseaseSchool of Pharmaceutical Sciences & The Fifth Affiliated HospitalGuangzhou Medical UniversityGuangzhouChina
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Yuan X, Jiang P, Qiao C, Su N, Sun P, Lin F, Li C. PLATELET SUPPRESSION BY TIROFIBAN AMELIORATES PULMONARY COAGULATION AND FIBRINOLYSIS ABNORMALITIES IN THE LUNGS OF MOUSE ANTIBODY-MEDIATED TRANSFUSION-RELATED ACUTE LUNG INJURY. Shock 2023; 59:603-611. [PMID: 36640155 DOI: 10.1097/shk.0000000000002080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
ABSTRACT This study aimed to explore the ameliorating effects of the platelet surface glycoprotein IIb/IIIa receptor antagonist tirofiban on coagulation and fibrinolytic abnormalities in a mouse model of antibody-mediated transfusion-associated acute lung injury (ALI). This is important because ALI is a major cause of death attributable to the occurrence of adverse transfusion reactions. No information on a definite diagnosis or pathological mechanism exists, and targeted treatment options are not available. In this study, wild-type male Balb/c mice aged 8 to 10 weeks were randomly divided into the TRALI model, blank control, tirofiban intervention, and isotype control groups. After different treatment exposures, the mice were observed for 2 h before being killed, and lung tissue samples were collected. To explore the intervention effect of tirofiban, the degree of lung injury was quantified by estimating the lung wet/dry ratio, rectal temperature, survival rate, total protein, and myeloperoxidase and via hematoxylin-eosin staining. Furthermore, the coagulation, anticoagulation, and fibrinolysis assays were measured by automatic coagulation instrument and enzyme-linked immunosorbent assay kits, and the fluorescence densities of platelets and fibrin were quantified using immunofluorescence to analyze the effects of tirofiban on the platelet and fibrin interactions of TRALI. Compared with the TRALI model group, the lung injury indices in the tirofiban intervention group decreased significantly, and survival rates also improved. Furthermore, the level of coagulation and fibrinolytic abnormalities were obviously lower than those in the TRALI model group. In conclusion, our findings suggest that tirofiban might interfere with TRALI by inhibiting platelet activation and improving coagulation and fibrinolytic abnormalities.
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Affiliation(s)
- Xin Yuan
- Institute of Blood Transfusion, Chinese Academy of Medical Science & Peking Union Medical College, Chengdu, Sichuan, People's Republic of China
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7
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Meng L, Liao X, Wang Y, Chen L, Gao W, Wang M, Dai H, Yan N, Gao Y, Wu X, Wang K, Liu Q. Pharmacologic therapies of ARDS: From natural herb to nanomedicine. Front Pharmacol 2022; 13:930593. [PMID: 36386221 PMCID: PMC9651133 DOI: 10.3389/fphar.2022.930593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 10/03/2022] [Indexed: 12/15/2022] Open
Abstract
Acute respiratory distress syndrome (ARDS) is a common critical illness in respiratory care units with a huge public health burden. Despite tremendous advances in the prevention and treatment of ARDS, it remains the main cause of intensive care unit (ICU) management, and the mortality rate of ARDS remains unacceptably high. The poor performance of ARDS is closely related to its heterogeneous clinical syndrome caused by complicated pathophysiology. Based on the different pathophysiology phases, drugs, protective mechanical ventilation, conservative fluid therapy, and other treatment have been developed to serve as the ARDS therapeutic methods. In recent years, there has been a rapid development in nanomedicine, in which nanoparticles as drug delivery vehicles have been extensively studied in the treatment of ARDS. This study provides an overview of pharmacologic therapies for ARDS, including conventional drugs, natural medicine therapy, and nanomedicine. Particularly, we discuss the unique mechanism and strength of nanomedicine which may provide great promises in treating ARDS in the future.
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Affiliation(s)
- Linlin Meng
- Shandong University of Traditional Chinese Medicine, Jinan, Shandong, China
- Department of Critical Care Medicine, Shanghai East Hospital, School of medicine, Tongji University, China
| | - Ximing Liao
- Department of Critical Care Medicine, Shanghai East Hospital, School of medicine, Tongji University, China
| | - Yuanyuan Wang
- Department of Critical Care Medicine, Shanghai East Hospital, School of medicine, Tongji University, China
| | - Liangzhi Chen
- Shandong University of Traditional Chinese Medicine, Jinan, Shandong, China
| | - Wei Gao
- Department of Critical Care Medicine, Shanghai East Hospital, School of medicine, Tongji University, China
| | - Muyun Wang
- Department of Critical Care Medicine, Shanghai East Hospital, School of medicine, Tongji University, China
| | - Huiling Dai
- Department of Critical Care Medicine, Shanghai East Hospital, School of medicine, Tongji University, China
| | - Na Yan
- Shandong University of Traditional Chinese Medicine, Jinan, Shandong, China
| | - Yixuan Gao
- Department of Gynecology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Xu Wu
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Kun Wang
- Department of Critical Care Medicine, Shanghai East Hospital, School of medicine, Tongji University, China
- *Correspondence: Kun Wang, ; Qinghua Liu,
| | - Qinghua Liu
- Department of Critical Care Medicine, Shanghai East Hospital, School of medicine, Tongji University, China
- *Correspondence: Kun Wang, ; Qinghua Liu,
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Inhibition of miR-29b-1-5p Attenuates Inflammatory Response and Pulmonary Fibrosis in LPS-Induced Acute Lung Injury by Regulating RTN4 Expression. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:7523591. [PMID: 36118085 PMCID: PMC9481378 DOI: 10.1155/2022/7523591] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 08/03/2022] [Accepted: 08/05/2022] [Indexed: 11/17/2022]
Abstract
Objective Acute lung injury (ALI) is a severe respiratory disorder causing alveolar-capillary barrier, leading to a high rate of morbidity and death in critically ill individuals. microRNAs (miRNAs)-mediated mechanism in the pathogenesis of ALI has attracted much interest. Herein, we attempt to characterize a candidate miRNA and its downstream target that is linked to the pathogenesis of ALI. Methods LPS-conditioned MH-S cells were treated with miR-29a-1-5p mimic, inhibitor, and RNT4 expression vector, and the ALI animal model was injected with agomir and antagomir of miR-29b-1-5p and RNT4 expression vector, in which the pro-inflammatory cytokine production, cell viability and apoptosis, myeloperoxidase (MPO) activity, wet/dry (W/D) ratio, and expression of TGF-β1, α-smooth muscle actin (α-SMA), E-cadherin, and vimentin were examined. miR-29a-1-5p inhibition of RTN4 translation was confirmed by luciferase activity assays. Results An elevated miR-29a-1-5p expression was demonstrated in LPS-conditioned MH-S cells. miR-29a-1-5p inhibitor transfection attenuated the production of pro-inflammatory cytokines and MH-S cell viability but enhanced the apoptosis. miR-29a-1-5p inhibition of RTN4 translation was demonstrated in the setting of LPS-induced ALI. LPS-induced murine models demonstrated upregulated miR-29a-1-5p. Intravenous injection of miR-29b-1-5p agomir attenuated mouse lung injury and pulmonary fibrosis. RTN4 overexpression resisting to miR-29a-1-5p overexpression was demonstrated in LPS-induced murine models. Conclusion The findings obtained from the study that disturbing the action of miR-29a-1-5p may be a novel therapeutic strategy for preventing ALI.
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Cao J, Kuang D, Luo M, Wang S, Fu C. Targeting circNCLN/miR-291a-3p/TSLP signaling axis alleviates lipopolysaccharide-induced acute lung injury. Biochem Biophys Res Commun 2022; 617:60-67. [PMID: 35679712 DOI: 10.1016/j.bbrc.2022.05.095] [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: 05/07/2022] [Accepted: 05/30/2022] [Indexed: 11/27/2022]
Abstract
Acute lung injury (ALI) is a life-threatening disease caused by the severe and acute response of the lungs to a variety of direct and indirect insults. Patients with ALI are currently treated mainly with respiratory support due to inadequate understanding of ALI progression. Alveolar epithelial cells produced thymic stromal lymphopoietin (TSLP) has been proved to worsen ALI by triggering airway inflammation. However, the regulation mechanism of TSLP expression remains unclear. In this study, we identified the crucial role played by circNCLN in lipopolysaccharide (LPS)-induced ALI. We demonstrated for the first time that miR-291a-3p could directly bind to the 3'UTR of TSLP and suppress TSLP expression in alveolar epithelial cells. Mechanistically, our data identified that circNCLN acts as a molecular sponge to antagonize miR-291a-3p and thereby maintaining the expression of TSLP in alveolar epithelial cells. Importantly, targeting circNCLN by its antisense oligonucleotide (ASO) markedly alleviated LPS-induced ALI. Therefore, our results suggested that circNCLN/miR-291a-3p/TSLP axis may be an important signaling in LPS-induced ALI and circNCLN inhibition may serve as a potential treatment of ALI.
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Affiliation(s)
- Jianwei Cao
- Chronic Airways Diseases Laboratory, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Daibin Kuang
- Department of Emergency Intensive Care Unit, Affiliated Dongguan Hospital, Southern Medical University (Dongguan People's Hospital), Dongguan, Guangdong, China
| | - Ming Luo
- Department of Emergency Intensive Care Unit, Affiliated Dongguan Hospital, Southern Medical University (Dongguan People's Hospital), Dongguan, Guangdong, China
| | - Shanzhong Wang
- Department of Emergency Intensive Care Unit, Affiliated Dongguan Hospital, Southern Medical University (Dongguan People's Hospital), Dongguan, Guangdong, China
| | - Chunlai Fu
- Chronic Airways Diseases Laboratory, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China; Department of Emergency Intensive Care Unit, Affiliated Dongguan Hospital, Southern Medical University (Dongguan People's Hospital), Dongguan, Guangdong, China.
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10
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Qi Z, Chen J, Deng M, Zhang Y, Ma T, Ma M. Protection of Toll-Like Receptor 9 Against Lipopolysaccharide-Induced Inflammation and Oxidative Stress of Pulmonary Epithelial Cells via MyD88-Mediated Pathways. Physiol Res 2022; 71:259-273. [DOI: 10.33549/physiolres.934741] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Acute lung injury (ALI) caused by lipopolysaccharide (LPS) is a common, severe clinical syndrome. Injury caused by inflammation and oxidative stress in vascular endothelial and alveolar epithelial cells is a vital process in the pathogenesis of ALI. Toll-like receptor 9 (TLR9) is highly expressed in LPS-induced ALI rats. In this study, Beas-2B human pulmonary epithelial cells and A549 alveolar epithelial cells were stimulated by LPS, resulting in the upregulation of TLR9 in a concentration-dependent manner. Furthermore, TLR9 overexpression and interference vectors were transfected before LPS administration to explore the role of TLR9 in LPS-induced ALI in vitro. The findings revealed that inhibition of TLR9 reduced inflammation and oxidative stress while suppressing apoptosis of LPS-induced Beas-2B and A549 cells, whereas TLR9 overexpression aggravated these conditions. Moreover, TLR9 inhibition resulted in downregulated protein expression of myeloid differentiation protein 88 (MyD88) and activator activator protein 1 (AP-1), as well as phosphorylation of nuclear factor-B (NF-B), c-Jun N terminal kinase (JNK), and p38 mitogen-activated protein kinase (MAPK). The phosphorylation of extracellular-regulated protein kinases 1/2 was upregulated compared to that of cells subjected to only LPS administration, and this was reversed by TLR9 overexpression. These results indicate that inhibition of TLR9 plays a protective role against LPS-induced inflammation and oxidative stress in Beas-2B and A549 cells, possibly via the MyD88/NF-B and MyD88/MAPKs/AP-1 pathways.
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Affiliation(s)
- Z Qi
- Department of Critical Care Medicine, Foshan Hospital of Traditional Chinese Medicine, Foshan, China.
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11
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Yuan HX, Liang KF, Chen C, Li YQ, Liu XJ, Chen YT, Jian YP, Liu JS, Xu YQ, Ou ZJ, Li Y, Ou JS. Size Distribution of Microparticles: A New Parameter to Predict Acute Lung Injury After Cardiac Surgery With Cardiopulmonary Bypass. Front Cardiovasc Med 2022; 9:893609. [PMID: 35571221 PMCID: PMC9098995 DOI: 10.3389/fcvm.2022.893609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Accepted: 03/30/2022] [Indexed: 11/13/2022] Open
Abstract
Background Acute lung injury (ALI) is a common complication after cardiac surgery with cardiopulmonary bypass (CPB). No precise way, however, is currently available to predict its occurrence. We and others have demonstrated that microparticles (MPs) can induce ALI and were increased in patients with ALI. However, whether MPs can be used to predict ALI after cardiac surgery with CPB remains unknown. Methods In this prospective study, 103 patients undergoing cardiac surgery with CPB and 53 healthy subjects were enrolled. MPs were isolated from the plasma before, 12 h after, and 3 d after surgery. The size distributions of MPs were measured by the LitesizerTM 500 Particle Analyzer. The patients were divided into two subgroups (ALI and non-ALI) according to the diagnosis of ALI. Descriptive and correlational analyzes were conducted between the size distribution of MPs and clinical data. Results Compared to the non-ALI group, the size at peak and interquartile range (IQR) of MPs in patients with ALI were smaller, but the peak intensity of MPs is higher. Multivariate logistic regression analysis indicated that the size at peak of MPs at postoperative 12 h was an independent risk factor for ALI. The area under the curve (AUC) of peak diameter at postoperative 12 h was 0.803. The best cutoff value of peak diameter to diagnose ALI was 223.05 nm with a sensitivity of 88.0% and a negative predictive value of 94.5%. The AUC of IQR at postoperative 12 h was 0.717. The best cutoff value of IQR to diagnose ALI was 132.65 nm with a sensitivity of 88.0% and a negative predictive value of 92.5%. Combining these two parameters, the sensitivity reached 92% and the negative predictive value was 96%. Conclusions Our findings suggested that the size distribution of MPs could be a novel biomarker to predict and exclude ALI after cardiac surgery with CPB.
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Affiliation(s)
- Hao-Xiang Yuan
- Division of Cardiac Surgery, Heart Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, Guangzhou, China
- NHC key Laboratory of Assisted Circulation, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, Guangzhou, China
| | - Kai-Feng Liang
- Division of Cardiac Surgery, Heart Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, Guangzhou, China
- NHC key Laboratory of Assisted Circulation, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, Guangzhou, China
| | - Chao Chen
- Division of Cardiac Surgery, Heart Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, Guangzhou, China
- NHC key Laboratory of Assisted Circulation, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, Guangzhou, China
| | - Yu-Quan Li
- Division of Cardiac Surgery, Heart Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, Guangzhou, China
- NHC key Laboratory of Assisted Circulation, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, Guangzhou, China
| | - Xiao-Jun Liu
- Division of Cardiac Surgery, Heart Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, Guangzhou, China
- NHC key Laboratory of Assisted Circulation, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, Guangzhou, China
| | - Ya-Ting Chen
- Division of Cardiac Surgery, Heart Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, Guangzhou, China
- NHC key Laboratory of Assisted Circulation, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, Guangzhou, China
| | - Yu-Peng Jian
- Division of Cardiac Surgery, Heart Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, Guangzhou, China
- NHC key Laboratory of Assisted Circulation, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, Guangzhou, China
| | - Jia-Sheng Liu
- Division of Cardiac Surgery, Heart Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, Guangzhou, China
- NHC key Laboratory of Assisted Circulation, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, Guangzhou, China
| | - Ying-Qi Xu
- Division of Cardiac Surgery, Heart Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, Guangzhou, China
- NHC key Laboratory of Assisted Circulation, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, Guangzhou, China
| | - Zhi-Jun Ou
- National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, Guangzhou, China
- NHC key Laboratory of Assisted Circulation, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, Guangzhou, China
- Division of Hypertension and Vascular Diseases, Heart Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- *Correspondence: Zhi-Jun Ou
| | - Yan Li
- Division of Cardiac Surgery, Heart Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, Guangzhou, China
- NHC key Laboratory of Assisted Circulation, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, Guangzhou, China
- Yan Li
| | - Jing-Song Ou
- Division of Cardiac Surgery, Heart Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, Guangzhou, China
- NHC key Laboratory of Assisted Circulation, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, Guangzhou, China
- Guangdong Provincial Key Laboratory of Brain Function and Disease, Guangzhou, China
- Jing-Song Ou ;
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12
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Abstract
Molecular hydrogen exerts biological effects on nearly all organs. It has anti-oxidative, anti-inflammatory, and anti-aging effects and contributes to the regulation of autophagy and cell death. As the primary organ for gas exchange, the lungs are constantly exposed to various harmful environmental irritants. Short- or long-term exposure to these harmful substances often results in lung injury, causing respiratory and lung diseases. Acute and chronic respiratory diseases have high rates of morbidity and mortality and have become a major public health concern worldwide. For example, coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has become a global pandemic. An increasing number of studies have revealed that hydrogen may protect the lungs from diverse diseases, including acute lung injury, chronic obstructive pulmonary disease, asthma, lung cancer, pulmonary arterial hypertension, and pulmonary fibrosis. In this review, we highlight the multiple functions of hydrogen and the mechanisms underlying its protective effects in various lung diseases, with a focus on its roles in disease pathogenesis and clinical significance.
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Affiliation(s)
- Zhiling Fu
- Department of Anesthesiology, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Jin Zhang
- Department of Anesthesiology, Shengjing Hospital of China Medical University, Shenyang 110004, China.
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13
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Ge C, Liu J, Fu Y, Jia L, Long L, Dong S. MicroRNA-21 protects against sepsis-induced acute lung injury by targeting phosphatase and tensin homolog in mice. EUR J INFLAMM 2022. [DOI: 10.1177/1721727x221120978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Introduction: Sepsis can cause acute lung injury (ALI), one of the leading causes of death in critically ill patients. The underlying mechanisms of sepsis-induced acute lung injury include excessive inflammation, oxidative stress, cell apoptosis, pulmonary edema, and lung tissue dysfunction. Recent studies have shown that miRNA-21 (miR-21) plays a vital role in sepsis-induced acute kidney injury. Relatively few studies have focused on the protective effects of ALI. This study aimed to determine the potential role of miR-21 in sepsis-induced ALI. Methods: We performed quantitative real-time polymerase chain reaction in a septic mouse model induced by cecal ligation and puncture (CLP) and found that miR-21 expression was upregulated. We then transfected the miR-21 precursor to upregulate miR-21 expression and miR-21 inhibitor to downregulate miR-21 expression. The sham group was exposed only to the cecum. ALI was induced by CLP, and the pre-miR-21+ALI and anti-miR-21+ALI groups were treated with miR-21 precursor or miR-21 inhibitor in the caudal vein before CLP. Pre-miR-21+ALI+PTEN inhibition (Pre-miR-21+ALI+PI) and anti-miR-21+ALI+PTEN inhibition (Anti-miR-21+ALI+PI) groups were treated with PTEN inhibition into the caudal vein after miR-21 transfection. Inflammatory cytokines, oxidative stress indicators, lung tissue cell apoptosis, oxygenation index (OI), lung wet/dry weight ratio, and lung pathological changes in the lung were observed in each group. Results: Compared with ALI mice, inflammatory response, oxidative stress indicators, lung tissue cell apoptosis, and the degree of lung injury were remarkably alleviated in Pre-miR-21+ALI mice and aggravated in Anti-miR-21+ALI mice. Western blot analysis showed that phosphatase and tensin homolog (PTEN) protein expression was decreased in CLP-treated mics. PTEN protein expression was decreased in the Pre-miR-21+ALI group but increased in the Anti-miR-21+ALI group. Moreover, the effect of miR-21 on anti-inflammatory, anti-oxidative stress, and anti-apoptosis enhanced after PTEN inhibition. Conclusion: This study revealed that miR-21 has a protective effect in sepsis-induced ALI by regulating PTEN in mice.
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Affiliation(s)
- Chen Ge
- Department of Intensive Medicine, Hebei General Hospital, Shijiazhuang, P.R. China
| | - Junhang Liu
- Department of Orthopaedics Surgery, Children’s Hospital of Hebei, Shijiazhuang, P.R. China
| | - You Fu
- Department of Intensive Medicine, Hebei General Hospital, Shijiazhuang, P.R. China
| | - Lijing Jia
- Department of Intensive Medicine, Hebei General Hospital, Shijiazhuang, P.R. China
| | - Ling Long
- Department of Intensive Medicine, Hebei General Hospital, Shijiazhuang, P.R. China
| | - Shimin Dong
- Department of Emergency, Hebei Medical University Third Affiliated Hospital, Shijiazhuang, P.R. China
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14
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Ma J, Li Q, Ji D, Luo L, Hong L. Predicting candidate therapeutic drugs for sepsis-induced acute respiratory distress syndrome based on transcriptome profiling. Bioengineered 2021; 12:1369-1380. [PMID: 33904373 PMCID: PMC8806268 DOI: 10.1080/21655979.2021.1917981] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 04/12/2021] [Accepted: 04/12/2021] [Indexed: 01/23/2023] Open
Abstract
Sepsis-induced acute respiratory distress syndrome (ARDS) remains a major threat to human health without effective therapeutic drugs. Previous studies demonstrated the power of gene expression profiling to reveal pathological changes associated with sepsis-induced ARDS. However, there is still a lack of systematic data mining framework for identifying potential targets for treatment. In this study, we demonstrated the feasibility of druggable targets prediction based on gene expression data. Through the functional enrichment analysis of microarray-based expression profiles between sepsis-induced ARDS and non-sepsis ARDS samples, we revealed genes involved in anti-microbial infection immunity were significantly altered in sepsis-induced ARDS. Protein-protein interaction (PPI) network analysis highlighted TOP2A gene as the key regulator in the dysregulated gene network of sepsis-induced ARDS. We were also able to predict several therapeutic drug candidates for sepsis-induced ARDS using Connectivity Map (Cmap) database, among which doxorubicin was identified to interact with TOP2A with a high affinity similar to its endogenous ligand. Overall, our findings suggest that doxorubicin could be a potential therapeutic for sepsis-induced ARDS by targeting TOP2A, which requires further investigation and validation. The whole study relies on publicly available dataset and publicly accessible database or bioinformatic tools for data mining. Therefore, our study benchmarks a workflow for druggable target prediction which can be widely applicable in the search of targets in other pathological conditions.
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Affiliation(s)
- Jiawei Ma
- Department of Critical Care Medicine, The Affiliated Wuxi No.2 People’s Hospital of Nanjing Medical University, Wuxi, China
| | - Qianqian Li
- Department of Critical Care Medicine, The Affiliated Wuxi No.2 People’s Hospital of Nanjing Medical University, Wuxi, China
| | - Dandan Ji
- Department of Critical Care Medicine, The Affiliated Wuxi No.2 People’s Hospital of Nanjing Medical University, Wuxi, China
| | - Liang Luo
- Department of Critical Care Medicine, The Affiliated Wuxi No.2 People’s Hospital of Nanjing Medical University, Wuxi, China
| | - Lei Hong
- Institute of Clinical Medicine Research, The Affiliated Suzhou Science and Technology Town Hospital of Nanjing Medical University, Suzhou, China
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15
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Alsharif KF, Almalki AA, Alsanie WF, Alzahrani KJ, Kabrah SM, Elshopakey GE, Alghamdi AAA, Lokman MS, Sberi HA, Bauomy AA, Albrakati A, Ramadan SS, Kassab RB, Abdel Moneim AE, Salem FEH. Protocatechuic acid attenuates lipopolysaccharide-induced septic lung injury in mice: The possible role through suppressing oxidative stress, inflammation and apoptosis. J Food Biochem 2021; 45:e13915. [PMID: 34472624 DOI: 10.1111/jfbc.13915] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Revised: 07/14/2021] [Accepted: 08/16/2021] [Indexed: 12/11/2022]
Abstract
Here, we investigated the protective efficacy of protocatechuic acid (PCA) against lipopolysaccharide (LPS)-induced septic lung injury. Eighty-two male Balb/c mice were divided into six groups: control, PCA30 (30 mg/kg), LPS (10 mg/kg), PCA10-LPS, PCA20-LPS, and PCA30-LPS treated with 10, 20 and 30 mg/kg PCA, respectively, for seven days before intraperitoneal LPS injection. PCA pre-treatment, especially at higher dose, significantly reduced LPS-induced lung tissue injury as indicated by increased heat shock protein 70 and antioxidant molecules (reduced glutathione, superoxide dismutase, catalase, glutathione peroxidase, and glutathione reductase) accompanied by lower oxidative stress indices (malondialdehyde and nitric oxide). PCA administration decreased inflammatory mediators including myeloperoxidase, nuclear factor kappa B (NF-κB p65), and pro-inflammatory cytokines, and prevented the development of apoptotic events in the lung tissue. At the molecular level, PCA downregulated mRNA expression of nitric oxide synthase 2, C/EBP homologous protein, and high mobility group box1 in the lungs of all PCA-LPS treated mice. Thus, PCA-pre-treatment effectively counteracted sepsis-induced acute lung injury in vivo by promoting and antioxidant status, while inhibiting inflammation and apoptosis. PRACTICAL IMPLICATIONS: Sepsis-mediated organ dysfunction and high mortality is aggravated by acute lung injury (ALI). Therefore, new therapeutic approaches are needed to encounter sepsis-mediated ALI. Protocatechuic acid (PCA) is a naturally occurring phenolic acid with various biological and pharmacological activities. PCA is abundant in edible plants including Allium cepa L., Oryza sativa L., Hibiscus sabdariffa, Prunus domestica L., and Eucommia ulmoides. In this investigation we studied the potential protective role of pure PCA (10, 20 and 30 mg/kg) on LPS-mediated septic lung injury in mice through examining oxidative challenge, inflammatory response, apoptotic events and histopathological changes in addition to evaluating the levels and mRNA expression of heat shock protein 70, C/EBP homologous protein and high mobility group box1 in the lung tissue. The recorded results showed that PCA pre-administration was able to significantly abrogate the damages in the lung tissue associated septic response. This protective effect comes from its strong antioxidant, anti-inflammatory, and anti-apoptotic activities, suggesting that PCA may be applied to alleviate ALI associated with the development of sepsis.
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Affiliation(s)
- Khalaf F Alsharif
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia
| | - Abdulraheem Ali Almalki
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia
| | - Walaa F Alsanie
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia
| | - Khalid J Alzahrani
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia
| | - Saeed M Kabrah
- Department of Laboratory Medicine, Faculty of Applied Medical Sciences, Umm AlQura University, Mecca, Saudi Arabia
| | - Gehad E Elshopakey
- Department of Clinical Pathology, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt
| | | | - Maha S Lokman
- Biology Department, College of Science and Humanities, Prince Sattam Bin Abdul Aziz University, Alkharj, Saudi Arabia.,Department of Zoology and Entomology, Faculty of Science, Helwan University, Cairo, Egypt
| | - Hassan Al Sberi
- Basic Medical Science, Histopathology Department, National Organization for Drug Control and Research, Giza, Egypt.,Department of Biology, Faculty of Science, Taif University, Taif, Saudi Arabia
| | - Amira A Bauomy
- Department of Zoology and Entomology, Faculty of Science, Helwan University, Cairo, Egypt.,Department of Science Laboratories, College of Science and Arts, Qassim University, ArRass, Saudi Arabia
| | - Ashraf Albrakati
- Department of Human Anatomy, College of Medicine, Taif University, Taif, Saudi Arabia
| | - Shimaa S Ramadan
- Department of Chemistry, Faculty of Science, Helwan University, Cairo, Egypt
| | - Rami B Kassab
- Department of Zoology and Entomology, Faculty of Science, Helwan University, Cairo, Egypt.,Department of Biology, Faculty of Science and Arts, Al Baha University, Almakhwah, Saudi Arabia
| | - Ahmed E Abdel Moneim
- Department of Zoology and Entomology, Faculty of Science, Helwan University, Cairo, Egypt
| | - Fatma Elzahraa H Salem
- Department of Zoology and Entomology, Faculty of Science, Helwan University, Cairo, Egypt
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16
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Yin X, Zhu G, Wang Q, Fu YD, Wang J, Xu B. Ferroptosis, a New Insight Into Acute Lung Injury. Front Pharmacol 2021; 12:709538. [PMID: 34421604 PMCID: PMC8371968 DOI: 10.3389/fphar.2021.709538] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Accepted: 07/22/2021] [Indexed: 01/11/2023] Open
Abstract
Acute lung injury (ALI), a common and critical illness with high morbidity and mortality, is caused by multiple causes. It has been confirmed that oxidative stress plays an important role in the development of ALI. Ferroptosis, a newly discovered programmed cell death in 2012, is characterized by iron-dependent lipid peroxidation and involved in many diseases. To date, compelling evidence reveals the emerging role of ferroptosis in the pathophysiological process of ALI. Here, we review the role of ferroptosis in the pathogenesis of ALI and its therapeutic potential in ALI.
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Affiliation(s)
- Xiaofang Yin
- Intensive Care Uint, Nanjing Hospital of Chinese Medicine Affiliated to Nanjing University of Chinese Medicine, Nanjing, China
| | - Guisong Zhu
- Intensive Care Uint, Nanjing Hospital of Chinese Medicine Affiliated to Nanjing University of Chinese Medicine, Nanjing, China
| | - Qian Wang
- Department of Respiration, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Yuan Dong Fu
- Intensive Care Uint, Nanjing Hospital of Chinese Medicine Affiliated to Nanjing University of Chinese Medicine, Nanjing, China
| | - Juan Wang
- Intensive Care Uint, Nanjing Hospital of Chinese Medicine Affiliated to Nanjing University of Chinese Medicine, Nanjing, China
| | - Biao Xu
- Intensive Care Uint, Nanjing Hospital of Chinese Medicine Affiliated to Nanjing University of Chinese Medicine, Nanjing, China
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17
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Weng D, Yin ZF, Chen SS, He X, Li N, Chen T, Qiu H, Zhao MM, Wu Q, Zhou NY, Lu LQ, Tang DL, Song JC, Li HP. Development and assessment of the efficacy and safety of human lung-targeting liposomal methylprednisolone crosslinked with nanobody. Drug Deliv 2021; 28:1419-1431. [PMID: 34223777 PMCID: PMC8259875 DOI: 10.1080/10717544.2021.1921073] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
Glucocorticoid (GC) hormone has been commonly used to treat systemic inflammation and immune disorders. However, the side effects associated with long-term use of high-dose GC hormone limit its clinical application seriously. GC hormone that can specifically target the lung might decrease the effective dosage and thus reduce GC-associated side effects. In this study, we successfully prepared human lung-targeting liposomal methylprednisolone crosslinked with nanobody (MPS-NSSLs-SPANb). Our findings indicate that MPS-NSSLs-SPANb may reduce the effective therapeutic dosage of MPS, achieve better efficacy, and reduce GC-associated side effects. In addition, MPS-NSSLs-SPANb showed higher efficacy and lower toxicity than conventional MPS.
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Affiliation(s)
- Dong Weng
- Department of Respiratory Medicine, School of Medicine, Shanghai Pulmonary Hospital, Tongji University, Shanghai, China
| | - Zhao-Fang Yin
- Department of Respiratory Medicine, School of Medicine, Shanghai Pulmonary Hospital, Soochow University, Suzhou, China
| | - Shan-Shan Chen
- Department of Respiratory Medicine, School of Medicine, Shanghai Pulmonary Hospital, Soochow University, Suzhou, China
| | - Xian He
- Department of Respiratory Medicine, School of Medicine, Shanghai Pulmonary Hospital, Tongji University, Shanghai, China
| | - Nan Li
- Department of Respiratory Medicine, School of Medicine, Shanghai Pulmonary Hospital, Tongji University, Shanghai, China
| | - Tao Chen
- Department of Respiratory Medicine, School of Medicine, Shanghai Pulmonary Hospital, Tongji University, Shanghai, China
| | - Hui Qiu
- Department of Respiratory Medicine, School of Medicine, Shanghai Pulmonary Hospital, Tongji University, Shanghai, China
| | - Meng-Meng Zhao
- Department of Respiratory Medicine, School of Medicine, Shanghai Pulmonary Hospital, Tongji University, Shanghai, China
| | - Qin Wu
- Department of Respiratory Medicine, School of Medicine, Shanghai Pulmonary Hospital, Tongji University, Shanghai, China
| | - Nian-Yu Zhou
- Department of Respiratory Medicine, School of Medicine, Shanghai Pulmonary Hospital, Tongji University, Shanghai, China
| | - Li-Qin Lu
- Department of Respiratory Medicine, School of Medicine, Shanghai Pulmonary Hospital, Tongji University, Shanghai, China
| | - Dan-Li Tang
- Department of Respiratory Medicine, School of Medicine, Shanghai Pulmonary Hospital, Tongji University, Shanghai, China
| | - Jia-Cui Song
- Department of Respiratory Medicine, School of Medicine, Shanghai Pulmonary Hospital, Soochow University, Suzhou, China
| | - Hui-Ping Li
- Department of Respiratory Medicine, School of Medicine, Shanghai Pulmonary Hospital, Tongji University, Shanghai, China
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18
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Ma J, Xu LY, Sun QH, Wan XY, BingLi. Inhibition of miR-1298-5p attenuates sepsis lung injury by targeting SOCS6. Mol Cell Biochem 2021; 476:3745-3756. [PMID: 34100174 DOI: 10.1007/s11010-021-04170-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 04/23/2021] [Indexed: 02/06/2023]
Abstract
Sepsis is one of the leading causes of morbidity and mortality and a major cause of acute lung injury (ALI). carried by exosomes play a role in a variety of diseases. However,there are not many studies of exosomal miRNAs in sepsis and sepsis lung injury.miR-1298-5p and suppressor of cytokine signaling 6 (SOCS6) were silenced or overexpressed in human bronchial epithelial cells (BEAS-2B). PKH-67 Dye was used to trace exosome endocytosis. Cell permeability was evaluated by measuring trans-epithelial electrical resistance (TEER) and FITC dextran flux. ELISA kits were used for cytokine detection. Quantitative RT-PCR and western blots were used to evaluate gene expression. miR-1298-5p was elevated in exosomes from patients with sepsis lung injury (Sepsis_exo). Treatment of BEAS-2B cells using Sepsis_exo significantly inhibited cell proliferation, and induced cell permeability and inflammatory response. miR-1298-5p directly targeted SOCS6. Overexpressing SOCS6 reversed miR-1298-5p-induced cell permeability and inflammatory response. Inhibition of STAT3 blocked SOCS6-silencing caused significant increase of cell permeability and inflammation. Exosomes isolated from patients of sepsis lung injury increased cell permeability and inflammatory response in BEAS-2B cells through exosomal miR-1298-5p which targeted SOCS6 via STAT3 pathway. The findings highlight the importance of miR-1298-5p/SOCS6/STAT3 axis in sepsis lung injury and provide new insights into therapeutic strategies for sepsis lung injury.
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Affiliation(s)
- Jian Ma
- Department of Respiratory and Critical Care Medicine, Shanghai Pulmonary Hospital, Doctor's Office, 10th floor, building 2, NO.507 Zhengmin Road, Yangpu District, Shanghai, 200433, P.R. China.
| | - Li-Yun Xu
- Department of Respiratory and Critical Care Medicine, Shanghai Pulmonary Hospital, Doctor's Office, 10th floor, building 2, NO.507 Zhengmin Road, Yangpu District, Shanghai, 200433, P.R. China
| | - Qiu-Hong Sun
- Department of Respiratory and Critical Care Medicine, Shanghai Pulmonary Hospital, Doctor's Office, 10th floor, building 2, NO.507 Zhengmin Road, Yangpu District, Shanghai, 200433, P.R. China
| | - Xiao-Yu Wan
- Department of Respiratory and Critical Care Medicine, Shanghai Pulmonary Hospital, Doctor's Office, 10th floor, building 2, NO.507 Zhengmin Road, Yangpu District, Shanghai, 200433, P.R. China
| | - BingLi
- Department of Respiratory and Critical Care Medicine, Shanghai Pulmonary Hospital, Doctor's Office, 10th floor, building 2, NO.507 Zhengmin Road, Yangpu District, Shanghai, 200433, P.R. China
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19
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Gaver DP, Nieman GF, Gatto LA, Cereda M, Habashi NM, Bates JHT. The POOR Get POORer: A Hypothesis for the Pathogenesis of Ventilator-induced Lung Injury. Am J Respir Crit Care Med 2020; 202:1081-1087. [PMID: 33054329 DOI: 10.1164/rccm.202002-0453cp] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Protective ventilation strategies for the injured lung currently revolve around the use of low Vt, ostensibly to avoid volutrauma, together with positive end-expiratory pressure to increase the fraction of open lung and reduce atelectrauma. Protective ventilation is currently applied in a one-size-fits-all manner, and although this practical approach has reduced acute respiratory distress syndrome deaths, mortality is still high and improvements are at a standstill. Furthermore, how to minimize ventilator-induced lung injury (VILI) for any given lung remains controversial and poorly understood. Here we present a hypothesis of VILI pathogenesis that potentially serves as a basis upon which minimally injurious ventilation strategies might be developed. This hypothesis is based on evidence demonstrating that VILI begins in isolated lung regions manifesting a Permeability-Originated Obstruction Response (POOR) in which alveolar leak leads to surfactant dysfunction and increases local tissue stresses. VILI progresses topographically outward from these regions in a POOR-get-POORer fashion unless steps are taken to interrupt it. We propose that interrupting the POOR-get-POORer progression of lung injury relies on two principles: 1) open the lung to minimize the presence of heterogeneity-induced stress concentrators that are focused around the regions of atelectasis, and 2) ventilate in a patient-dependent manner that minimizes the number of lung units that close during each expiration so that they are not forced to rerecruit during the subsequent inspiration. These principles appear to be borne out in both patient and animal studies in which expiration is terminated before derecruitment of lung units has enough time to occur.
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Affiliation(s)
- Donald P Gaver
- Department of Biomedical Engineering, Tulane University, New Orleans, Louisiana
| | - Gary F Nieman
- Department of Surgery, SUNY Upstate Medical University, Syracuse, New York
| | - Louis A Gatto
- Department of Surgery, SUNY Upstate Medical University, Syracuse, New York
| | - Maurizio Cereda
- Department of Anesthesiology and Critical Care and.,Department of Radiology, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Nader M Habashi
- R Adams Cowley Shock Trauma Center, University of Maryland, Baltimore, Maryland; and
| | - Jason H T Bates
- Department of Medicine, University of Vermont, Burlington, Vermont
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20
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Pharmacological inhibition of poly (ADP-ribose) polymerase by olaparib, prevents acute lung injury associated cognitive deficits potentially through suppression of inflammatory response. Eur J Pharmacol 2020; 877:173091. [PMID: 32234526 DOI: 10.1016/j.ejphar.2020.173091] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Revised: 03/12/2020] [Accepted: 03/26/2020] [Indexed: 12/21/2022]
Abstract
Acute lung injury (ALI) has been reported to be associated with high mortality rate. Moreover, ALI survivors, frequently present chronic cognitive deterioration. We have previously shown that 'two hit' (hydrochloric acid + lipopolysaccharide) induced ALI resulted in cognitive dysfunction through the induction of systemic inflammation. The present study was designed to explore the potential anti-inflammatory effects of olaparib (Poly ADP-ribose polymerase-1 inhibitor), on ALI mediated cognitive impairment. Olaparib was administered at dose of 5 mg/kg body weight (i.p.) 30 min before each hit. Data show that olaparib pre-treatment markedly reduced the neutrophil infiltration, alveolar capillary damage, inflammatory cytokines level (TNF-α/IL-1β/IL-6) and oxidative stress in the lungs at 24 h after ALI induction. Also, olaparib pre-treatment ameliorated the ALI associated cognitive impairment as assessed by Morris water maze test on weekly basis for 2 consecutive weeks. Further, restoration of cognitive function was associated with normalization of serum levels of TNF-α/IL-1β and improved the blood brain barrier (BBB) function, as reflected by data on expression of occludin/claudin-5 and extravasation of Evans-blue/FITC dextran in hippocampus at 1 week post injury. Finally, increased mRNA expression of VCAM-1, TNF-α and IL-1β and NF-κB activation in hippocampus indicate induction of neuro-inflammation, which was downregulated upon olaparib administration. Further, olaparib treatment 1 week after ALI induction blunted the systemic inflammation which was associated with improved BBB and cognitive function. Altogether, our results showed that olaparib protects against ALI and associated cognitive deficits in mice, and thus may offer a new treatment avenue in the area.
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21
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Kim KT, Morton S, Howe S, Chiew YS, Knopp JL, Docherty P, Pretty C, Desaive T, Benyo B, Szlavecz A, Moeller K, Shaw GM, Chase JG. Model-based PEEP titration versus standard practice in mechanical ventilation: a randomised controlled trial. Trials 2020; 21:130. [PMID: 32007099 PMCID: PMC6995650 DOI: 10.1186/s13063-019-4035-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2019] [Accepted: 12/29/2019] [Indexed: 11/12/2022] Open
Abstract
Background Positive end-expiratory pressure (PEEP) at minimum respiratory elastance during mechanical ventilation (MV) in patients with acute respiratory distress syndrome (ARDS) may improve patient care and outcome. The Clinical utilisation of respiratory elastance (CURE) trial is a two-arm, randomised controlled trial (RCT) investigating the performance of PEEP selected at an objective, model-based minimal respiratory system elastance in patients with ARDS. Methods and design The CURE RCT compares two groups of patients requiring invasive MV with a partial pressure of arterial oxygen/fraction of inspired oxygen (PaO2/FiO2) ratio ≤ 200; one criterion of the Berlin consensus definition of moderate (≤ 200) or severe (≤ 100) ARDS. All patients are ventilated using pressure controlled (bi-level) ventilation with tidal volume = 6–8 ml/kg. Patients randomised to the control group will have PEEP selected per standard practice (SPV). Patients randomised to the intervention will have PEEP selected based on a minimal elastance using a model-based computerised method. The CURE RCT is a single-centre trial in the intensive care unit (ICU) of Christchurch hospital, New Zealand, with a target sample size of 320 patients over a maximum of 3 years. The primary outcome is the area under the curve (AUC) ratio of arterial blood oxygenation to the fraction of inspired oxygen over time. Secondary outcomes include length of time of MV, ventilator-free days (VFD) up to 28 days, ICU and hospital length of stay, AUC of oxygen saturation (SpO2)/FiO2 during MV, number of desaturation events (SpO2 < 88%), changes in respiratory mechanics and chest x-ray index scores, rescue therapies (prone positioning, nitric oxide use, extracorporeal membrane oxygenation) and hospital and 90-day mortality. Discussion The CURE RCT is the first trial comparing significant clinical outcomes in patients with ARDS in whom PEEP is selected at minimum elastance using an objective model-based method able to quantify and consider both inter-patient and intra-patient variability. CURE aims to demonstrate the hypothesized benefit of patient-specific PEEP and attest to the significance of real-time monitoring and decision-support for MV in the critical care environment. Trial registration Australian New Zealand Clinical Trial Registry, ACTRN12614001069640. Registered on 22 September 2014. (https://www.anzctr.org.au/Trial/Registration/TrialReview.aspx?id=366838&isReview=true) The CURE RCT clinical protocol and data usage has been granted by the New Zealand South Regional Ethics Committee (Reference number: 14/STH/132).
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Affiliation(s)
- Kyeong Tae Kim
- Centre for Bioengineering, University of Canterbury, Christchurch, New Zealand.
| | - Sophie Morton
- Centre for Bioengineering, University of Canterbury, Christchurch, New Zealand
| | - Sarah Howe
- Centre for Bioengineering, University of Canterbury, Christchurch, New Zealand
| | | | - Jennifer L Knopp
- Centre for Bioengineering, University of Canterbury, Christchurch, New Zealand
| | - Paul Docherty
- Centre for Bioengineering, University of Canterbury, Christchurch, New Zealand
| | - Christopher Pretty
- Centre for Bioengineering, University of Canterbury, Christchurch, New Zealand
| | - Thomas Desaive
- GIGA Cardiovascular Science, University of Liege, Liege, Belgium
| | - Balazs Benyo
- Department of Control Engineering and Information, Budapest University of Technology and Economics, Budapest, Hungary
| | - Akos Szlavecz
- Department of Control Engineering and Information, Budapest University of Technology and Economics, Budapest, Hungary
| | - Knut Moeller
- Institute of Technical Medicine (ITeM), HFU Furtwangen University, Villingen-Schwenningen, Germany
| | - Geoffrey M Shaw
- Department of Intensive Care, Christchurch Hospital, Christchurch, New Zealand
| | - J Geoffrey Chase
- Centre for Bioengineering, University of Canterbury, Christchurch, New Zealand
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22
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Meng Y, Sha S, Yang J, Ren H. Effects of Tec Tyrosine Kinase Inhibition on the Inflammatory Response of Severe Acute Pancreatitis-Associated Acute Lung Injury in Mice. Dig Dis Sci 2019; 64:2167-2176. [PMID: 30761473 DOI: 10.1007/s10620-019-05524-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Accepted: 02/06/2019] [Indexed: 01/20/2023]
Abstract
BACKGROUND The Tec kinase family is involved in acute and chronic inflammatory diseases, but its relationship with severe acute pancreatitis (SAP) remains unclear. AIMS To investigate whether Tec tyrosine kinase can be used as a target for severe acute pancreatitis-associated acute lung injury (PALI). METHODS A total of 90 mice were randomly assigned into four groups: SAP (n = 15), control (n = 15), SAP + α-cyano-β-hydroxy-β-methyl-N-(2,5-dibromophenyl)propenamide (LFM-A13) (pretreated with Tec kinase inhibitor LFM-A13, n = 15), and SAP + Tec siRNA (pretreated with PBS/negative control siRNA/Tec siRNA, n = 45). SAP was induced by caerulein and lipopolysaccharide. Animals were sacrificed at 0, 3, 24, 48, and 72 h, respectively. Pathological changes and scores of the lung and pancreas were determined using hematoxylin-eosin staining. Expression of Tec and phosphorylated Tec (p-Tec) were examined by real-time polymerase chain reaction, Western blot, and immunoprecipitation. Serum levels of amylase, myeloperoxidase, and pro-inflammatory cytokines were measured by ELISA. RESULTS The expression of Tec in lung tissue was significantly higher in the SAP group than in the control group (p < 0.05), and p-Tec expression gradually increased with time. Furthermore, p-Tec expression was significantly lower in the SAP + LFM-A13 group than in the SAP group (p < 0.05); however, Tec expression did not vary. Tec inhibitors, LFM-A13 and Tec siRNA, alleviated pathological damage and release of inflammatory cytokines (p < 0.05). CONCLUSIONS Tec tyrosine kinase plays a key role in PALI, and is therefore a potential target for clinical treatment.
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Affiliation(s)
- Yiteng Meng
- Department of Gastroenterology, Qilu Hospital, Shandong University, 107 Wenhuaxi Road, Jinan, 250012, Shandong Province, China
| | - Shuo Sha
- Department of Gastroenterology, Qilu Hospital, Shandong University, 107 Wenhuaxi Road, Jinan, 250012, Shandong Province, China
| | - Jing Yang
- Department of Gastroenterology, Qilu Hospital, Shandong University, 107 Wenhuaxi Road, Jinan, 250012, Shandong Province, China
| | - Hongbo Ren
- Department of Gastroenterology, Qilu Hospital, Shandong University, 107 Wenhuaxi Road, Jinan, 250012, Shandong Province, China.
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23
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Liu G, Betts C, Cunoosamy DM, Åberg PM, Hornberg JJ, Sivars KB, Cohen TS. Use of precision cut lung slices as a translational model for the study of lung biology. Respir Res 2019; 20:162. [PMID: 31324219 PMCID: PMC6642541 DOI: 10.1186/s12931-019-1131-x] [Citation(s) in RCA: 106] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Accepted: 07/09/2019] [Indexed: 12/28/2022] Open
Abstract
Animal models remain invaluable for study of respiratory diseases, however, translation of data generated in genetically homogeneous animals housed in a clean and well-controlled environment does not necessarily provide insight to the human disease situation. In vitro human systems such as air liquid interface (ALI) cultures and organ-on-a-chip models have attempted to bridge the divide between animal models and human patients. However, although 3D in nature, these models struggle to recreate the architecture and complex cellularity of the airways and parenchyma, and therefore cannot mimic the complex cell-cell interactions in the lung. To address this issue, lung slices have emerged as a useful ex vivo tool for studying the respiratory responses to inflammatory stimuli, infection, and novel drug compounds. This review covers the practicality of precision cut lung slice (PCLS) generation and benefits of this ex vivo culture system in modeling human lung biology and disease pathogenesis.
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Affiliation(s)
- Guanghui Liu
- RIA Safety, Clinical Pharmacology & Safety Sciences, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Catherine Betts
- Pathology, Clinical Pharmacology & Safety Sciences, BioPharmaceuticals R&D, AstraZeneca, Cambridge, UK
| | - Danen M Cunoosamy
- Bioscience, Respiratory Inflammation and Autoimmunity, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden.,Present Address: Sanofi, Cambridge, MA, USA
| | - Per M Åberg
- RIA Safety, Clinical Pharmacology & Safety Sciences, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Jorrit J Hornberg
- RIA Safety, Clinical Pharmacology & Safety Sciences, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Kinga Balogh Sivars
- RIA Safety, Clinical Pharmacology & Safety Sciences, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Taylor S Cohen
- Microbial Sciences, BioPharmaceuticals R&D, AstraZeneca, One Medimmune Way, Gaithersburg, MD, 20877, USA.
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24
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Zhang Y, Huang T, Jiang L, Gao J, Yu D, Ge Y, Lin S. MCP-induced protein 1 attenuates sepsis-induced acute lung injury by modulating macrophage polarization via the JNK/c-Myc pathway. Int Immunopharmacol 2019; 75:105741. [PMID: 31323531 DOI: 10.1016/j.intimp.2019.105741] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Revised: 06/03/2019] [Accepted: 07/03/2019] [Indexed: 12/17/2022]
Abstract
Sepsis is a potentially fatal systemic inflammatory response syndrome caused by infection. In this study, we evaluated the effects of MCP-induced protein 1 (MCPIP1), a recently discovered inflammation-related ribonuclease, on sepsis-induced acute lung injury (ALI) and investigated the underlying mechanisms. Cecal ligation puncture and lipopolysaccharide induction were performed on Sprague-Dawley rats and RAW264.7 cells, respectively, to establish sepsis-induced ALI models. The proteasome inhibitor MG132 used as an activator of MCPIP1 overexpression, and we showed that MG132 can indeed increase the expression of MCPIP1. MCPIP1 overexpression induced by MG132 alleviated sepsis-induced pathologic changes, water content and protein leakage in the lungs, and induction of systemic inflammatory mediators, and improved the 7-day mortality rate in the model rats. We also showed that MCPIP1 p showed romoted macrophage polarization from the M1 to the M2 type in sepsis-induced ALI. Furthermore, MCPIP1-enhanced M2 polarization was inhibited by an MCPIP1-targeting small interfering RNA (siMCPIP1) in RAW264.7 cells. Further mechanistic studies showed that the promotive effect of MCPIP1 on M2 polarization was related to the inhibition of c-Jun N-terminal kinase (JNK) and its downstream transcription factor c-Myc in the in vitro model. Conversely, siMCPIP1 transfection resulted in the recovery of JNK and c-Myc expression in LPS-treated cells. Taken together, these findings indicate that MCPIP1 plays a protective role in sepsis-induced ALI by modulating macrophage polarization through inhibition of the JNK/c-Myc signaling pathway. Our study presents a potentially novel therapeutic strategy for the treatment of lung injury involving the inflammatory cascade.
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Affiliation(s)
- Yang Zhang
- Department of Anesthesiology, Institute of Anesthesia, Emergency and Critical Care, Subei People's Hospital of Jiangsu Province, XiangYa School of Medicine, Central South University,China
| | - Tianfeng Huang
- Department of Anesthesiology, Institute of Anesthesia, Emergency and Critical Care, Subei People's Hospital of Jiangsu Province, China
| | - Lulu Jiang
- Department of Anesthesiology, Institute of Anesthesia, Emergency and Critical Care, Subei People's Hospital of Jiangsu Province, XiangYa School of Medicine, Central South University,China
| | - Ju Gao
- Department of Anesthesiology, Institute of Anesthesia, Emergency and Critical Care, Subei People's Hospital of Jiangsu Province, China.
| | - Dapeng Yu
- Department of Anesthesiology, Institute of Anesthesia, Emergency and Critical Care, Subei People's Hospital of Jiangsu Province, XiangYa School of Medicine, Central South University,China
| | - Yali Ge
- Department of Anesthesiology, Institute of Anesthesia, Emergency and Critical Care, Subei People's Hospital of Jiangsu Province, XiangYa School of Medicine, Central South University,China
| | - Shunyan Lin
- Department of Anesthesiology, Institute of Anesthesia, Emergency and Critical Care, Subei People's Hospital of Jiangsu Province, China
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Zhang H, Sha J, Feng X, Hu X, Chen Y, Li B, Fan H. Dexmedetomidine ameliorates LPS induced acute lung injury via GSK-3β/STAT3-NF-κB signaling pathway in rats. Int Immunopharmacol 2019; 74:105717. [PMID: 31254953 DOI: 10.1016/j.intimp.2019.105717] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Revised: 06/12/2019] [Accepted: 06/21/2019] [Indexed: 12/14/2022]
Abstract
Acute lung injury (ALI) is a serious complication of sepsis and an important cause of death in intensive care. Studies have shown that DEX can inhibit inflammation. However, the anti-inflammatory effect and protective mechanism of DEX in lipopolysaccharide (LPS) induced ALI are still unclear. ALI model was established by intraperitoneal injection of LPS (10 mg/kg) in Sprague-Dawley (SD) male rats. Firstly, at 4, 6, 8, 12 and 24 h after LPS treatment, lung injury including pathologic histology, lung edema, and inflammation were detected. The optimal time point for lung injury was determined to be 12 h, at which time DEX was added to further test. Furthermore, STAT3 inhibitor (NSC74859) and GSK-3β inhibitor (SB216763) were added to verify the role of STAT3, GSK-3β and NF-κB in ameliorated ALI. Our results show that DEX pretreatment significantly decreased lung Wet-to-Dry weight (W/D) ratio and MPO activity and ameliorated LPS induced lung histopathological alterations. In addition, we confirmed that DEX can increased the phosphorylation of STAT3 and GSK-3β, and inhibit the phosphorylation of nuclear factor-κB (NF-κB) p65 in the inflammatory response induced by LPS. What's more, NSC74859 inhibited the phosphorylation of STAT3 and reversed the protect effect of DEX on LPS. SB216763 inhibited the phosphorylation of NF-κB and reversed the damage effect of LPS and plays the same anti-inflammatory effect as DEX. In summary, our data demonstrated that DEX can ameliorate ALI induced by LPS through GSK-3β/STAT3-NF-κB pathway.
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Affiliation(s)
- Huayun Zhang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Jichen Sha
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Xiujing Feng
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Xueyuan Hu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Yongping Chen
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Bei Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Honggang Fan
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Harbin 150030, China.
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Protein S is Protective in Acute Lung Injury by Inhibiting Cell Apoptosis. Int J Mol Sci 2019; 20:ijms20051082. [PMID: 30832349 PMCID: PMC6429595 DOI: 10.3390/ijms20051082] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2019] [Revised: 02/25/2019] [Accepted: 02/27/2019] [Indexed: 01/05/2023] Open
Abstract
Acute lung injury is a fatal disease characterized by inflammatory cell infiltration, alveolar-capillary barrier disruption, protein-rich edema, and impairment of gas exchange. Protein S is a vitamin K-dependent glycoprotein that exerts anticoagulant, immunomodulatory, anti-inflammatory, anti-apoptotic, and neuroprotective effects. The aim of this study was to evaluate whether human protein S inhibits cell apoptosis in acute lung injury. Acute lung injury in human protein S transgenic and wild-type mice was induced by intratracheal instillation of lipopolysaccharide. The effect of human protein S on apoptosis of lung tissue cells was evaluated by Western blotting. Inflammatory cell infiltration, alveolar wall thickening, myeloperoxidase activity, and the expression of inflammatory cytokines were reduced in human protein S transgenic mice compared to the wild-type mice after lipopolysaccharide instillation. Apoptotic cells and caspase-3 activity were reduced while phosphorylation of extracellular signal-regulated kinase was enhanced in the lung tissue from human protein S transgenic mice compared to wild-type mice after lipopolysaccharide instillation. The results of this study suggest that human protein S is protective in lipopolysaccharide-induced acute lung injury by inhibiting apoptosis of lung cells.
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Wang J, Gong S, Wang F, Niu M, Wei G, He Z, Gu T, Jiang Y, Liu A, Chen P. Granisetron protects polymicrobial sepsis-induced acute lung injury in mice. Biochem Biophys Res Commun 2019; 508:1004-1010. [DOI: 10.1016/j.bbrc.2018.12.031] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Accepted: 12/05/2018] [Indexed: 01/08/2023]
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28
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Two hit induced acute lung injury impairs cognitive function in mice: A potential model to study cross talk between lung and brain. Brain Behav Immun 2018; 73:633-642. [PMID: 30026058 DOI: 10.1016/j.bbi.2018.07.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Revised: 07/06/2018] [Accepted: 07/14/2018] [Indexed: 01/12/2023] Open
Abstract
Acute lung injury (ALI), a pulmonary inflammatory disorder, is associated with high morbidity and mortality rates. Interestingly, ALI survivors have been reported for some neurocognitive deterioration at/after discharge. However, the molecular factors behind such extra pulmonary manifestation are not clearly known. The present work was designed to investigate lung-brain cross talk in experimental mice for deciphering primary molecular factors that may be involved in ALI-mediated cognitive impairment. ALI was induced in Balb/c mice by intra-tracheal administration of either 0.1 N HCl (2 ml/kg) or LPS (1 mg/kg) as single hits or both agents were administered successively to mimic the 'two hit' model. Interestingly two hit-mediated ALI resulted in exaggerated inflammatory response as reflected by increased pulmonary neutrophils and inflammatory factors (TNF-α/IL-1β/IL-6). Additionally, two hits resulted in delayed resolution of lung inflammation and was coupled with persistent decline in memory, as assessed by Morris water maze test. Further, two hits elevate serum levels of TNF-α/IL-1β which was associated with compromised blood brain barrier (BBB), as evident by decreased expression of occludin/claudin-5 and consequent Evans-blue extravasation in hippocampus 1 week post injury. Finally, dexamethasone protects against the two hit mediated cognitive impairment by lowering the pro-inflammatory factors (TNF-α/IL-1β) both in lungs and blood. Overall, we report for the first time that 'two hit' mediated ALI cause persistent cognitive impairment in mice partly via up-regulating systemic expression of TNF-α/IL-1β that may disrupt BBB and hence the model may be a useful tool to examine the lung-brain cross-talk at the molecular level for exploring newer therapeutics.
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29
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Mechanism of MCP-1 in Acute Lung Injury and Advanced Therapy by Drug-Loaded Dextrin Nanoparticle. INT J POLYM SCI 2018. [DOI: 10.1155/2018/9269154] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Objective. To observe the expression of monocyte chemotactic protein 1 (MCP-1) in acute lung injury (ALI) rat model, to characterize its effect on the development and progression of ALI, and to identify the potential new drug delivery approach during in vivo experiment. Method. The effects of different doses of lipopolysaccharide (LPS) on human pulmonary artery endothelial cells (HPAEC) were tested. For the animal experiments, thirty Sprague-Dawley (SD) rats were divided into physiological saline control group (NC group), the LPS model group (L group), the antagonist RS102895 combined with LPS group (R + L group), and the antagonist RS102895-loaded polyaldehyde dextran nanoparticles combined with LPS group (DNPR + L group). The blood gas analysis and dry/wet weight ratio were detected 24 hours after interventions. The levels of inflammatory factors, tumor necrosis factor-α (TNF-α) and interleukin-1β (IL-1β), were tested by ELISA. The expression of monocyte chemoattractant protein-1 (MCP-1) in lung tissues was examined through Western blot, and the change of MCP-1 mRNA expression level was detected by performing RT-PCR. Result. LPS was responsible for inducing ALI in rats, and the degree of cell damage was dose-dependent. Blood gas analysis of L group showed that PaO2 and PaO2/FiO2 levels were significantly lower than those of the NC group (P<0.05), while the dry/wet weight ratio of lung tissues in L group increased (P<0.05). Inflammatory factors including TNF-α and IL-1β and the expression of MCP-1 in both protein and mRNA levels were higher in L group than in the NC group (P<0.05). The inhibition of the interaction between MCP-1 and chemokines receptor 2 (CCR2) by antagonist RS102895 can significantly alleviate the ALI in rats, which is accompanied by a significant decrease of inflammatory factors and MCP-1 expression (P<0.05). Compared with R + L group, treatment with DNPR and LPS combination significantly improved the condition of rats and decreased the level of TNF-α, IL-1β, and MCP-1 expression (P<0.05). Conclusion. In ALI, RS102895 can inhibit the MCP-1/CCR2 interaction, therefore, retarding the progress of ALI. Because of the high transfection efficiency of inhibitor RS102895packgaed by polyaldehyde dextran nanoparticles, this phenomenon particularly reached a significant level. The results imply new insights for the treatment of ALI.
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Mercer SJ, Jones CP, Bridge M, Clitheroe E, Morton B, Groom P. Systematic review of the anaesthetic management of non-iatrogenic acute adult airway trauma. Br J Anaesth 2018; 117 Suppl 1:i49-i59. [PMID: 27566791 DOI: 10.1093/bja/aew193] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/23/2016] [Indexed: 12/18/2022] Open
Abstract
INTRODUCTION Non-iatrogenic trauma to the airway is rare and presents a significant challenge to the anaesthetist. Although guidelines for the management of the unanticipated difficult airway have been published, these do not make provision for the 'anticipated' difficult airway. This systematic review aims to inform best practice and suggest management options for different injury patterns. METHODS A literature search was conducted using Embase, Medline, and Google Scholar for papers after the year 2000 reporting on the acute airway management of adult patients who suffered airway trauma. Our protocol and search strategy are registered with and published by PROSPERO (http://www.crd.york.ac.uk/PROSPERO, ID: CRD42016032763). RESULTS A systematic literature search yielded 578 articles, of which a total of 148 full-text papers were reviewed. We present our results categorized by mechanism of injury: blunt, penetrating, blast, and burns. CONCLUSIONS The hallmark of airway management with trauma to the airway is the maintenance of spontaneous ventilation, intubation under direct vision to avoid the creation of a false passage, and the avoidance of both intermittent positive pressure ventilation and cricoid pressure (the latter for laryngotracheal trauma only) during a rapid sequence induction. Management depends on available resources and time to perform airway assessment, investigations, and intervention (patients will be classified into one of three categories: no time, some time, or adequate time). Human factors, particularly the development of a shared mental model amongst the trauma team, are vital to mitigate risk and improve patient safety.
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Affiliation(s)
- S J Mercer
- Anaesthetic Department, Aintree University Hospital NHS Foundation Trust, Longmoor Lane, Aintree, Liverpool L9 7AL, UK Defence Medical Services, Royal Centre for Defence Medicine, Queen Elizabeth Hospital Birmingham, Mindelsohn Way, Edgbaston, Birmingham B15 2WB, UK Postgraduate School of Medicine, University of Liverpool, Cedar House, Ashton Street, Liverpool L69 3GE, UK
| | - C P Jones
- Anaesthetic Department, Aintree University Hospital NHS Foundation Trust, Longmoor Lane, Aintree, Liverpool L9 7AL, UK
| | - M Bridge
- Anaesthetic Department, Aintree University Hospital NHS Foundation Trust, Longmoor Lane, Aintree, Liverpool L9 7AL, UK
| | - E Clitheroe
- Anaesthetic Department, Aintree University Hospital NHS Foundation Trust, Longmoor Lane, Aintree, Liverpool L9 7AL, UK
| | - B Morton
- Anaesthetic Department, Aintree University Hospital NHS Foundation Trust, Longmoor Lane, Aintree, Liverpool L9 7AL, UK Honorary Research Fellow, Liverpool School of Tropical Medicine, Pembroke Place, Liverpool L3 5QA, UK
| | - P Groom
- Anaesthetic Department, Aintree University Hospital NHS Foundation Trust, Longmoor Lane, Aintree, Liverpool L9 7AL, UK
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Heme Oxygenase-1 Reduces Sepsis-Induced Endoplasmic Reticulum Stress and Acute Lung Injury. Mediators Inflamm 2018; 2018:9413876. [PMID: 30013453 PMCID: PMC6022325 DOI: 10.1155/2018/9413876] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Accepted: 04/04/2018] [Indexed: 12/29/2022] Open
Abstract
Background Sepsis leads to severe acute lung injury/acute respiratory distress syndrome (ALI/ARDS) that is associated with enhanced endoplasmic reticulum (ER) stress. Heme oxygenase-1 (HO-1), an ER-anchored protein, exerts antioxidant and protective functions under ALI. However, the role of HO-1 activation in the development of endoplasmic reticulum (ER) stress during sepsis remains unknown. Methods Cecal ligation and puncture (CLP) model was created to induce septic ALI. Lung tissue ER stress was measured 18 hours after CLP. The effects of HO-1 on ER stress during septic ALI were investigated in vivo using HO-1 agonist hemin and antagonist ZnPP. Results Compared with the sham group, ER stress in septic lung increased significantly 18 hours after CLP, which was significantly reduced by pretreatment with the ER inhibitor 4-phenylbutyrate (4-PBA). The lung injury score and the lung wet to dry (W/D) ratio in lungs were significantly reduced in septic rats after ER stress inhibition. Similarly, lung ER stress-related genes' (PERK, eIF2-α, ATF4, and CHOP) levels were attenuated after ER stress inhibition. Furthermore, HO-1 activation by hemin reduced p-PERK, p-eIF2-α, ATF4, and CHOP protein expression and oxidative stress and lung cell apoptosis. Additionally, HO-1 antagonist could aggregate the ER stress-related ALI. Conclusions ER stress was activated during CLP-induced ALI, which may represent a mechanism by which CLP induces ALI. HO-1 activation could inhibit CLP-induced lung ER stress and attenuate CLP-induced ALI.
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Wang F, Fu X, Wu X, Zhang J, Zhu J, Zou Y, Li J. Bone marrow derived M 2 macrophages protected against lipopolysaccharide-induced acute lung injury through inhibiting oxidative stress and inflammation by modulating neutrophils and T lymphocytes responses. Int Immunopharmacol 2018; 61:162-168. [PMID: 29883961 DOI: 10.1016/j.intimp.2018.05.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2017] [Revised: 05/06/2018] [Accepted: 05/20/2018] [Indexed: 01/31/2023]
Abstract
Acute lung injury (ALI) is characterized by aggravated inflammatory responses and the subsequent alveolar-capillary injury for which there are no specific therapies available currently. The present study was designed to investigate the protective roles of bone marrow derived M2 macrophages (M2 BMDMs) in lipopolysaccharide (LPS) induced ALI. M2 BMDMs were obtained from bone marrow cells stimulated with M-CSF and IL-4. Mice received M2 BMDMs intratracheally 3 h after LPS administration. Histology and wet/dry (W/D) weight ratio, activated immune cells and total protein were detected. Cytokines production were measured in vivo and vitro study. The effects of PD-L1 blockade on M2 BMDMs were calculated. The results showed that M2 BMDMs administration reduced the infiltration of neutrophils, inhibited the oxidative stress, while increased the counts of CD3+T lymphocytes as well as CD4+CD25+ regulatory T lymphocytes. Further, M2 BMDMs suppressed the TNF-α, IL-1β and IL-6 production, while increased the IL-10 production. Blockade of PD-L1/PD-1 pathway reversed cytokines production of M2 BMDMs in the BALF. These findings indicated that M2 BMDMs might be a promising therapeutic strategy for LPS-induced ALI through inhibiting oxidative stress and inflammation by modulating neutrophils and T lymphocytes responses.
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Affiliation(s)
- Fang Wang
- Department of Anesthesiology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 20080, China; Department of Anesthesiology and Intensive Care, Changhai Hospital, the Second Military Medical University, Shanghai 200433, China
| | - Xiazhen Fu
- Department of Anesthesiology, Weifang Medical University, Weifang 261053, China
| | - Xinwan Wu
- Department of Anesthesiology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 20080, China
| | - Jianhai Zhang
- Department of Anesthesiology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 20080, China
| | - Jiali Zhu
- Department of Anesthesiology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 20080, China
| | - Yun Zou
- Department of Anesthesiology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 20080, China; Department of Anesthesiology and Intensive Care, Changhai Hospital, the Second Military Medical University, Shanghai 200433, China.
| | - Jinbao Li
- Department of Anesthesiology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 20080, China.
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Moon SJ, Kim HY, Kim YH, Kim KS, Noh JR, Kim HJ, Choi JH, Hwang JH, Lee CH. GADD45β plays a protective role in acute lung injury by regulating apoptosis in experimental sepsis in vivo. J Cell Physiol 2018; 233:7128-7138. [PMID: 29741778 DOI: 10.1002/jcp.26635] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Accepted: 03/30/2018] [Indexed: 12/24/2022]
Abstract
Sepsis is a systemic inflammatory response syndrome due to microbial infection. Growth arrest and DNA-damage-inducible 45 beta (GADD45β) are induced by genotoxic stress and inflammatory cytokines. However, the role of GADD45β during bacterial infection remains unclear. This study was aimed at investigating the role of GADD45β in sepsis. We used GADD45β-knockout (KO) mice and C57BL/6J wild-type (WT) mice. Experimental sepsis was induced by lipopolysaccharide (LPS) administration or cecal ligation and puncture (CLP). Sepsis-induced mortality was higher in GADD45β-KO mice than in WT mice. Histopathological data demonstrated LPS treatment markedly increased lung injury in GADD45β-KO mice as compared to that in WT mice; however, no significant difference was observed in the liver and kidney. Further, mRNA levels of inflammatory cytokines, such as Il-1β, Il-6, Il-10, and Tnf-α, were higher in the lungs of LPS-treated GADD45β-KO mice than in WT mice. Interestingly, plasma levels of these inflammatory cytokines were decreased in LPS-administered GADD45β-KO mice. A significant increase in lung cell apoptosis was observed at early time points in GADD45β-KO mice after administration of LPS as compared to that in WT mice. In line with LPS-induced apoptosis, JNK, and p38 activity was higher in the lung of GADD45β-KO mice at 3 hr after LPS treatment than that in WT mice. In summary, this study is the first to demonstrate the protective role of GADD45β in sepsis and the results suggest that GADD45β could be used as a novel therapeutic target to cure sepsis.
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Affiliation(s)
- Sung-Je Moon
- Laboratory Animal Resource Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea
| | - Hyun-Yong Kim
- Laboratory Animal Resource Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea
| | - Yong-Hoon Kim
- Laboratory Animal Resource Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea.,University of Science and Technology, Yuseong-gu, Daejeon, Republic of Korea
| | - Kyoung-Shim Kim
- Laboratory Animal Resource Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea.,University of Science and Technology, Yuseong-gu, Daejeon, Republic of Korea
| | - Jung-Ran Noh
- Laboratory Animal Resource Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea
| | - Hyun-Jong Kim
- Laboratory Animal Resource Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea
| | - Ji-Hyun Choi
- Laboratory Animal Resource Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea
| | - Jung H Hwang
- Laboratory Animal Resource Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea.,University of Science and Technology, Yuseong-gu, Daejeon, Republic of Korea
| | - Chul-Ho Lee
- Laboratory Animal Resource Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea.,University of Science and Technology, Yuseong-gu, Daejeon, Republic of Korea
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Chen X, Cai X, Le R, Zhang M, Gu X, Shen F, Hong G, Chen Z. Isoliquiritigenin protects against sepsis-induced lung and liver injury by reducing inflammatory responses. Biochem Biophys Res Commun 2018; 496:245-252. [DOI: 10.1016/j.bbrc.2017.11.159] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Accepted: 11/23/2017] [Indexed: 01/05/2023]
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FN14 Blockade on Pulmonary Microvascular Endothelial Cells Improves the Outcome of Sepsis-Induced Acute Lung Injury. Shock 2018; 49:213-220. [DOI: 10.1097/shk.0000000000000915] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Ly6G+ neutrophil-derived miR-223 inhibits the NLRP3 inflammasome in mitochondrial DAMP-induced acute lung injury. Cell Death Dis 2017; 8:e3170. [PMID: 29144508 PMCID: PMC5775410 DOI: 10.1038/cddis.2017.549] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 09/08/2017] [Accepted: 09/11/2017] [Indexed: 12/19/2022]
Abstract
MicroRNA (miRNA) mediates RNA interference to regulate a variety of innate immune processes, but how miRNAs coordinate the mechanisms underlying acute lung injury/acute respiratory distress syndrome (ALI/ARDS) in patients with pulmonary inflammatory injury is still unknown. In this study, we demonstrated that miR-223 limits the number of Ly6G+ neutrophils and inhibits the activity of the NLRP3 inflammasome to alleviate ALI induced by mitochondrial damage-associated molecular patterns (DAMPs) (MTDs). miR-223 expression is increased in the lungs of MTD-induced mice or ARDS patients following trauma/transfusion or following the physiological remission of ALI/ARDS. miR-223−/+ mice exhibited more severe ALI and cytokine dysregulation. Other studies have shown that MTD-induced increases in miR-223 expression are mainly contributed by Ly6G+ neutrophils from the haematopoietic system. miR-223 blocks bone marrow-derived Ly6G+ neutrophil differentiation and inhibits peripheral cytokine release. In addition, MTD-induced miR-223 expression activates a negative feedback pathway that targets the inhibition of NLRP3 expression and IL-1β release; therefore, miR-223 deficiency can lead to the sustained activation of NLRP3-IL-1β. Finally, elimination of peripheral Ly6G+ neutrophils and pharmacological blockade of the miR-223–NLRP3–IL-1β signalling axis could alleviate MTD-induced ALI. In summary, miR-223 is essential for regulating the pathogenesis of DAMP-induced ALI.
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SOCS-1 ameliorates smoke inhalation-induced acute lung injury through inhibition of ASK-1 activity and DISC formation. Clin Immunol 2017; 191:94-99. [PMID: 29108854 DOI: 10.1016/j.clim.2017.10.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Revised: 10/23/2017] [Accepted: 10/28/2017] [Indexed: 01/20/2023]
Abstract
Smoke inhalation leads to acute lung injury (ALI), a devastating clinical problem associated with high mortality. Suppressor of cytokine signaling-1 (SOCS-1) is a negative regulator of apoptosis and pro-inflammatory cytokine signaling, two major contributors to the pathogenesis of ALI. We have found that SOCS-1 protects lung epithelial cells from smoke-induced apoptosis through two mechanisms. One is that SOCS-1 enhances degradation of ASK-1 and diminishes cleavage of pro-caspase-3 to repress smoke-triggered apoptosis in lung epithelial cells. The other is that SOCS-1 represses smoke-triggered DISC formation through altering TRADD-caspase-8 interaction rather than TNFR-1-TRADD interaction or TNFR-1-TRAF-2 interaction. In conclusion, SOCS-1 relieves smoke inhalation-induced lung injury by repressing ASK-1 and DISC-mediated epithelium apoptosis.
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Li N, Weng D, Wang SM, Zhang Y, Chen SS, Yin ZF, Zhai J, Scoble J, Williams CC, Chen T, Qiu H, Wu Q, Zhao MM, Lu LQ, Mulet X, Li HP. Surfactant protein-A nanobody-conjugated liposomes loaded with methylprednisolone increase lung-targeting specificity and therapeutic effect for acute lung injury. Drug Deliv 2017; 24:1770-1781. [PMID: 29160134 PMCID: PMC8241200 DOI: 10.1080/10717544.2017.1402217] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Revised: 10/30/2017] [Accepted: 11/04/2017] [Indexed: 12/11/2022] Open
Abstract
The advent of nanomedicine requires novel delivery vehicles to actively target their site of action. Here, we demonstrate the development of lung-targeting drug-loaded liposomes and their efficacy, specificity and safety. Our study focuses on glucocorticoids methylprednisolone (MPS), a commonly used drug to treat lung injuries. The steroidal molecule was loaded into functionalized nano-sterically stabilized unilamellar liposomes (NSSLs). Targeting functionality was performed through conjugation of surfactant protein A (SPANb) nanobodies to form MPS-NSSLs-SPANb. MPS-NSSLs-SPANb exhibited good size distribution, morphology, and encapsulation efficiency. Animal experiments demonstrated the high specificity of MPS-NSSLs-SPANb to the lung. Treatment with MPS-NSSLs-SPANb reduced the levels of TNF-α, IL-8, and TGF-β1 in rat bronchoalveolar lavage fluid and the expression of NK-κB in the lung tissues, thereby alleviating lung injuries and increasing rat survival. The nanobody functionalized nanoparticles demonstrate superior performance to treat lung injury when compared to that of antibody functionalized systems.
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Affiliation(s)
- Nan Li
- Department of Respiratory Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
- Department of Respiratory Medicine, People’s Hospital Affiliated to ZhengZhou University, ZhengZhou, China
| | - Dong Weng
- Department of Respiratory Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Shan-Mei Wang
- Department of Respiratory Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yuan Zhang
- Department of Respiratory Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Shan-Shan Chen
- Department of Respiratory Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
- School of Medicine, Suzhou University, SuZhou, China
| | - Zhao-Fang Yin
- Department of Respiratory Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
- School of Medicine, Suzhou University, SuZhou, China
| | | | | | | | - Tao Chen
- Department of Respiratory Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Hui Qiu
- Department of Respiratory Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Qin Wu
- Department of Respiratory Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Meng-Meng Zhao
- Department of Respiratory Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Li-Qin Lu
- Department of Respiratory Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | | | - Hui-Ping Li
- Department of Respiratory Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
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Wang JJ, Wei ZK, Zhang X, Wang YN, Fu YH, Yang ZT. Butyrate protects against disruption of the blood-milk barrier and moderates inflammatory responses in a model of mastitis induced by lipopolysaccharide. Br J Pharmacol 2017; 174:3811-3822. [PMID: 28800679 DOI: 10.1111/bph.13976] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Revised: 07/25/2017] [Accepted: 07/27/2017] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND AND PURPOSE Short-chain fatty acids are fermentation end products produced by gut bacteria, which have been shown to ameliorate inflammatory bowel diseases and allergic asthma. However, the mechanism involved remains largely unknown. Here, we investigate the protective effects and mechanisms of sodium butyrate (SB) on LPS-induced mastitis model. EXPERIMENTAL APPROACH Effects of increasing doses of SB on blood-milk barrier function and inflammation are studied in BALB/c mice with LPS-induced mastitis. The underlying mechanisms of anti-inflammatory effects of SB were further investigated in LPS-stimulated mouse mammary epithelial cells (mMECs). KEY RESULTS The results show that SB decreased LPS-induced disruption in mammary tissues, infiltration of inflammatory cells and the levels of TNF-α, IL-6 and IL-1β. SB up-regulated the tight junction proteins occludin and claudin-3 and reduced blood-milk barrier permeability in LPS-induced mastitis. Studies in vitro revealed that SB inhibited LPS-induced inflammatory response by inhibition of the NF-κB signalling pathway and histone deacetylases in LPS-stimulated mMECs. CONCLUSIONS AND IMPLICATIONS In our model, SB protected against LPS-induced mastitis by preserving blood-milk barrier function and depressing pro-inflammatory responses, suggesting the potential use of SB as a prophylactic agent to protect blood-milk barrier function in mastitis.
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Affiliation(s)
- Jing-Jing Wang
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province, China
| | - Zheng-Kai Wei
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province, China
| | - Xu Zhang
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province, China
| | - Ya-Nan Wang
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province, China
| | - Yun-He Fu
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province, China.,Department of Pathogenobiology, The Key Laboratory of Zoonosis, Chinese Ministry of Education, College of Basic Medicine, Jilin University, Changchun, Jilin Province, China
| | - Zheng-Tao Yang
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province, China
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Gong Y, Lan H, Yu Z, Wang M, Wang S, Chen Y, Rao H, Li J, Sheng Z, Shao J. Blockage of glycolysis by targeting PFKFB3 alleviates sepsis-related acute lung injury via suppressing inflammation and apoptosis of alveolar epithelial cells. Biochem Biophys Res Commun 2017; 491:522-529. [PMID: 28576491 DOI: 10.1016/j.bbrc.2017.05.173] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Accepted: 05/29/2017] [Indexed: 12/31/2022]
Abstract
Sepsis-related acute lung injury (ALI) is characterized by excessive lung inflammation and apoptosis of alveolar epithelial cells resulting in acute hypoxemic respiratory failure. Recent studies indicated that anaerobic glycolysis play an important role in sepsis. However, whether inhibition of aerobic glycolysis exhibits beneficial effect on sepsis-induced ALI is not known. In vivo, a cecal ligation and puncture (CLP)-induced ALI mouse model was set up and mice treated with glycolytic inhibitor 3PO after CLP. The mice treated with the 3PO ameliorated the survival rate, histopathological changes, lung inflammation, lactate increased and lung apoptosis of mice with CLP-induced sepsis. In vitro, the exposure of human alveolar epithelial A549 cells to lipopolysaccharide (LPS) resulted in cell apoptosis, inflammatory cytokine production, enhanced glycolytic flux and reactive oxygen species (ROS) increased. While these changes were attenuated by 3PO treatment. Sequentially, treatment of A549 cells with lactate caused cell apoptosis and enhancement of ROS. Pretreatment with N-acetylcysteine (NAC) significantly lowered LPS and lactate-induced the generation of ROS and cell apoptosis in A549 cells. Therefore, these results indicate that anaerobic glycolysis may be an important contributor in cell apoptosis of sepsis-related ALI. Moreover, LPS specifically induces apoptotic insults to A549 cell through lactate-mediated enhancement of ROS.
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Affiliation(s)
- Yuanqi Gong
- Department of Comprehensive Intensive Care Unit, Second Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - Haibing Lan
- Department of Comprehensive Intensive Care Unit, Second Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - Zhihong Yu
- Department of Comprehensive Intensive Care Unit, Second Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - Meng Wang
- Department of Comprehensive Intensive Care Unit, Second Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - Shu Wang
- Department of Comprehensive Intensive Care Unit, Second Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - Yu Chen
- Department of Comprehensive Intensive Care Unit, Second Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - Haiwei Rao
- Department of Comprehensive Intensive Care Unit, Second Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - Jingying Li
- Department of Comprehensive Intensive Care Unit, Second Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - Zhiyong Sheng
- Department of Comprehensive Intensive Care Unit, Second Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - Jianghua Shao
- Department of Hepatobiliary Surgery, Second Affiliated Hospital of Nanchang University, Nanchang 330006, China.
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Pulmonary Arterial Compliance in Acute Respiratory Distress Syndrome: Clinical Determinants and Association With Outcome From the Fluid and Catheter Treatment Trial Cohort. Crit Care Med 2017; 45:422-429. [PMID: 27941369 DOI: 10.1097/ccm.0000000000002186] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
OBJECTIVES Pulmonary vascular dysfunction is associated with adverse prognosis in patients with the acute respiratory distress syndrome; however, the prognostic impact of pulmonary arterial compliance in acute respiratory distress syndrome is not established. DESIGN, SETTING, PATIENTS We performed a retrospective analysis of 363 subjects with acute respiratory distress syndrome who had complete baseline right heart catheterization data from the Fluid and Catheter Treatment Trial to test whether pulmonary arterial compliance at baseline and over the course of treatment predicted mortality. MAIN RESULTS Baseline pulmonary arterial compliance (hazard ratio, 1.18 per interquartile range of 1/pulmonary arterial compliance; 95% CI, 1.02-1.37; p = 0.03) and pulmonary vascular resistance (hazard ratio, 1.28 per interquartile range; 95% CI, 1.07-1.53; p = 0.006) both modestly predicted 60-day mortality. Baseline pulmonary arterial compliance remained predictive of mortality when pulmonary vascular resistance was in the normal range (p = 0.02). Between day 0 and day 3, pulmonary arterial compliance increased in acute respiratory distress syndrome survivors and remained unchanged in nonsurvivors, whereas pulmonary vascular resistance did not change in either group. The resistance-compliance product (resistance-compliance time) increased in survivors compared with nonsurvivors, suggesting improvements in right ventricular load. CONCLUSIONS Baseline measures of pulmonary arterial compliance and pulmonary vascular resistance predict mortality in acute respiratory distress syndrome, and pulmonary arterial compliance remains predictive even when pulmonary vascular resistance is normal. Pulmonary arterial compliance and right ventricular load improve over time in acute respiratory distress syndrome survivors. Future studies should assess the impact of right ventricular protective acute respiratory distress syndrome treatment on right ventricular afterload and outcome.
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ROS feedback regulates the microRNA-19-targeted inhibition of the p47phox-mediated LPS-induced inflammatory response. Biochem Biophys Res Commun 2017; 489:361-368. [PMID: 28479245 DOI: 10.1016/j.bbrc.2017.05.022] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2017] [Accepted: 05/03/2017] [Indexed: 12/20/2022]
Abstract
In acute lung injury/acute respiratory distress syndrome (ALI/ARDS), pathogenesis is associated with the regulation of macrophage-generated oxidative stress, and nicotinamide adenine dinucleotide phosphate (NADPH) oxidase (NOX)-derived reactive oxygen species(ROS) are key to regulating oxidative stress. In the present study, we found that miR-19 inhibited the expression of p47phox in macrophages, resulting in the alleviation of the lipopolysaccharides(LPS)-induced inflammatory response. In a mouse LPS-induced model of lung injury, miR-19-deficient murine lung tissue was more susceptible to inflammatory responses and exhibited a higher infiltration rate, a higher number of inflammatory cells in the lungs, a higher level of inflammatory cytokines in the Bronchoalveolar lavage fluid (BALF), and more severe pathological damage in lung tissues. Moreover, following stimulation with LPS, p47phox was expressed at lower levels in miR-19-deficient murine pulmonary inflammatory cells than in those in wild-type rats. In LPS-treated Raw264.7 macrophages, miR-19 mimics blocking the down-regulation of LPS-induced p47phox expression, the accumulation of ROS, and the release of inflammatory cytokines. When siRNA was used to interfere with p47phox expression following stimulation with LPS, a lower level of ROS-mediated inflammatory cytokines were released. We found that the accumulation of ROS inhibited the LPS-induced release of inflammatory cytokines, the upregulation of miR-19 and the down-regulation of LPS-induced p47phox expression. Finally, we constructed a p47phox 3'UTR luciferase reporter plasmid to provide direct confirmation that miR-19 targets p47phox expression. The results of this study indicate the presence of a mechanism by which miR-19 regulates oxidative stress in macrophages. These data also provide potential targets for studies aimed at developing therapies for ARDS.
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Wang T, Hou W, Fu Z. Preventative effect of OMZ-SPT on lipopolysaccharide-induced acute lung injury and inflammation via nuclear factor-kappa B signaling in mice. Biochem Biophys Res Commun 2017; 485:284-289. [PMID: 28223218 DOI: 10.1016/j.bbrc.2017.02.090] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Accepted: 02/18/2017] [Indexed: 11/17/2022]
Abstract
Acute lung injury (ALI) is an early pathophysiologic change in acute respiratory distress syndrome and its management can be challenging. Omalizumab (Xolair™) is a recombinant DNA-derived, humanized antibody. OMZ-SPT is a polypeptide on the heavy chain of omalizumab monoclonal antibody. Here, we found that intramuscular administration of OMZ-SPT significantly improved survival and attenuated lung inflammation in female C57BL/6 mice suffering from lipopolysaccharide (LPS)-induced ALI. We also demonstrated that OMZ-SPT can inhibit expression of the inflammatory cytokines tumor necrosis factor-α, interleukin-1β and interleukin-6 by ELISA in mice suffering from LPS-induced ALI and a mouse macrophage line (RAW264.7 cells). In addition, we showed that OMZ-SPT inhibited LPS-induced activation of nuclear factor-kappa B (NF-κB) signaling and total expression of NF-κB by western blotting. These data suggest that OMZ-SPT could be a novel therapeutic choice for ALI.
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Affiliation(s)
- Ting Wang
- Pediatrics Research Institute, Ministry of Education Key Laboratory of Child Development and Disorders, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China; Department of Respiratory Medicine, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China.
| | - Wanru Hou
- Secular Peptide Biomedicine, Chengdu, China.
| | - Zhou Fu
- Pediatrics Research Institute, Ministry of Education Key Laboratory of Child Development and Disorders, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China; Department of Respiratory Medicine, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China.
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Liu CH, Zhang WD, Wang JJ, Feng SD. Senegenin Ameliorate Acute Lung Injury Through Reduction of Oxidative Stress and Inhibition of Inflammation in Cecal Ligation and Puncture-Induced Sepsis Rats. Inflammation 2017; 39:900-6. [PMID: 26945584 DOI: 10.1007/s10753-016-0322-6] [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] [Indexed: 12/12/2022]
Abstract
The purpose of this study was to assess the protective effect of senegenin on acute lung injury (ALI) in rats induced by sepsis. Rat ALI model was reproduced by cecal ligation and puncture (CLP). All rats were randomly divided into five groups: group 1 (control), group 2 (CLP), group 3 (CLP + senegenin 15 mg/kg), group 4 (CLP + senegenin 30 mg/kg), and group 5 (CLP + senegenin 60 mg/kg). CLP + senegenin groups received senegenin by gavage daily for consecutive 5 days, respectively, while the mice in control and CLP groups were given an equivalent volume of saline. We detected the lung wet/dry weight ratios and the histopathology of the lung. The levels of lung tissue myeloperoxidase (MPO), malondialdehyde (MDA), superoxide dismutase (SOD), and glutathione (GSH) were determined. Meanwhile, the nuclear factor-kappa B (NF-κB) activation, tumor necrosis factor-alpha (TNF-α), and interleukin-1β (IL-1β) levels were studied. The results demonstrated that senegenin treatment significantly attenuated CLP-induced lung injury, including reduction of lung wet/dry weight ratio, protein leak, infiltration of leukocytes, and MPO activity. In addition, senegenin markedly decreased MDA content and increased SOD activity and GSH level. Serum levels of TNF-α and IL-1β were also decreased by senegenin administration. Furthermore, senegenin administration inhibited the nuclear translocation of NF-κB in the lungs. These findings indicate that senegenin exerts protective effects on CLP-induced septic rats. Senegenin may be a potential therapeutic agent against sepsis.
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Affiliation(s)
- Chun-Hong Liu
- Dispensary of Traditional Chinese Medicine, Yantai Hospital of Traditional Chinese Medicine, Yantai, 264000, China
| | - Wei-Dong Zhang
- Department of Orthopedics, Yantai Hospital of Traditional Chinese Medicine, Yantai, 264000, China
| | - Jian-Jie Wang
- Department of Nephrology, Yantai Hospital of Traditional Chinese Medicine, N0.39 Xingfu Road, Zhifu District, Yantai, 264000, China
| | - Shan-Dan Feng
- Department of Nephrology, Yantai Hospital of Traditional Chinese Medicine, N0.39 Xingfu Road, Zhifu District, Yantai, 264000, China.
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Downregulation of miR-181a protects mice from LPS-induced acute lung injury by targeting Bcl-2. Biomed Pharmacother 2016; 84:1375-1382. [DOI: 10.1016/j.biopha.2016.10.065] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2016] [Revised: 10/19/2016] [Accepted: 10/21/2016] [Indexed: 11/21/2022] Open
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Wang CY, Hsieh MJ, Hsieh IC, Shie SS, Ho MY, Yeh JK, Tsai ML, Yang CH, Hung KC, Wang CC, Wen MS. CLOCK modulates survival and acute lung injury in mice with polymicrobial sepsis. Biochem Biophys Res Commun 2016; 478:935-41. [DOI: 10.1016/j.bbrc.2016.08.054] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Accepted: 08/08/2016] [Indexed: 01/01/2023]
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Luo L, Deng J, Wang DX, He J, Deng W. Regulation of epithelial sodium channel expression by oestradiol and progestogen in alveolar epithelial cells. Respir Physiol Neurobiol 2015; 216:52-62. [PMID: 26051998 DOI: 10.1016/j.resp.2015.06.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Revised: 05/15/2015] [Accepted: 06/01/2015] [Indexed: 01/11/2023]
Abstract
Oestrogen (E) and progestogen (P) exert regulatory effects on the epithelial Na(+) channel (ENaC) in the kidneys and the colon. However, the effects of E and P on the ENaC and on alveolar fluid clearance (AFC) remain unclear, and the mechanisms of action of these hormones are unknown. In this study, we showed that E and/or P administration increased AFC by more than 25% and increased the expression of the α and γ subunits of ENaC by approximately 35% in rats subjected to oleic acid-induced acute lung injury (ALI). A similar effect was observed in the dexamethasone-treated group. Furthermore, E and/or P treatment inhibited 11β-hydroxysteroid dehydrogenase (HSD) type 2 (11β-HSD2) activity, increased corticosterone expression and decreased the serum adrenocorticotrophic hormone (ACTH) levels. These effects were similar to those observed following treatment with carbenoxolone (CBX), a nonspecific HSD inhibitor. Further investigation showed that CBX further significantly increased AFC and α-ENaC expression after treatment with a low dose of E and/or P. In vitro, E or P alone inhibited 11β-HSD2 activity in a dose-dependent manner and increased α-ENaC expression by at least 50%, and E combined with P increased α-ENaC expression by more than 80%. Thus, E and P may augment the expression of α-ENaC, enhance AFC, attenuate pulmonary oedema by inhibiting 11β-HSD2 activity, and increase the active glucocorticoid levels in vivo and in vitro.
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Affiliation(s)
- Ling Luo
- Department of Respiratory Medicine, Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Jia Deng
- First Department of Internal Medicine, Traditional Chinese Medical Hospital of Jiangbei District, Chongqing, China
| | - Dao-xin Wang
- Department of Respiratory Medicine, Second Affiliated Hospital of Chongqing Medical University, Chongqing, China.
| | - Jing He
- Department of Respiratory Medicine, Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Wang Deng
- Department of Respiratory Medicine, Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
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Li Y, Xie K, Chen H, Wang G, Yu Y. Hydrogen gas inhibits high-mobility group box 1 release in septic mice by upregulation of heme oxygenase 1. J Surg Res 2015; 196:136-48. [PMID: 25818978 DOI: 10.1016/j.jss.2015.02.042] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2014] [Revised: 02/15/2015] [Accepted: 02/18/2015] [Indexed: 12/30/2022]
Abstract
BACKGROUND Sepsis is a potentially fatal whole-body inflammation caused by severe infection. Hydrogen gas (H2) is effective for treating sepsis. In this study, we hypothesized that the protective function of H2 in mice with septic lung injury occurred through the activation of heme oxygenase 1 (HO-1) and its upstream regulator nuclear factor-erythroid 2 p45-related factor 2 (Nrf2). MATERIALS AND METHODS Male institute of cancer research mice were subjected to sepsis by cecal ligation and puncture (CLP) with the presence or absence of H2. Beginning at 1 and 6 h after CLP or sham operation, respectively, 2% H2 was inhaled for 1 h. We intraperitoneally injected the HO-1 inhibitor zinc protoporphyrin IX (40 mg/kg) 1 h before CLP. To assess the severity of septic lung injury, we observed the 7-d survival rate, wet/dry weight ratio of lung, lung histopathologic score, oxygenation index, and so forth. Serum and homogenates from the lung, liver, and kidney were acquired for measuring the levels of high-mobility group box 1 (HMGB1) at 6, 12, and 24 h after CLP or sham operation. Furthermore, the protein and messenger RNA expression of Nrf2, HO-1, and HMGB1 was measured at 6, 12, and 24 h. RESULTS Septic mice had a lower survival rate and more severe lung injury compared with the sham group. However, therapy with H2 increased the survival rate and alleviated the severity of lung injury, reduced the HMGB1 level, and increased the HO-1 and Nrf2 levels in septic mice. Moreover, the HO-1 inhibitor zinc protoporphyrin IX significantly eliminated the protective effect of H2 on septic lung injury. CONCLUSIONS H2 plays a significant role in regulating the release of the inflammatory cytokine HMGB1 in septic mice, which is partially mediated through the activation of HO-1 as a downstream molecule of Nrf2.
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Affiliation(s)
- Yuan Li
- Department of Anesthesiology, General Hospital of Tianjin Medical University, Tianjin, China; Tianjin Institute of Anesthesiology, Tianjin, China
| | - Keliang Xie
- Department of Anesthesiology, General Hospital of Tianjin Medical University, Tianjin, China; Tianjin Institute of Anesthesiology, Tianjin, China.
| | - Hongguang Chen
- Department of Anesthesiology, General Hospital of Tianjin Medical University, Tianjin, China; Tianjin Institute of Anesthesiology, Tianjin, China
| | - Guolin Wang
- Department of Anesthesiology, General Hospital of Tianjin Medical University, Tianjin, China; Tianjin Institute of Anesthesiology, Tianjin, China
| | - Yonghao Yu
- Department of Anesthesiology, General Hospital of Tianjin Medical University, Tianjin, China; Tianjin Institute of Anesthesiology, Tianjin, China.
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Yao J, Pan D, Zhao Y, Zhao L, Sun J, Wang Y, You QD, Xi T, Guo QL, Lu N. Wogonin prevents lipopolysaccharide-induced acute lung injury and inflammation in mice via peroxisome proliferator-activated receptor gamma-mediated attenuation of the nuclear factor-kappaB pathway. Immunology 2014; 143:241-57. [PMID: 24766487 DOI: 10.1111/imm.12305] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2013] [Revised: 04/17/2014] [Accepted: 04/22/2014] [Indexed: 01/11/2023] Open
Abstract
Acute lung injury (ALI) from a variety of clinical disorders, characterized by diffuse inflammation, is a cause of acute respiratory failure that develops in patients of all ages. Previous studies reported that wogonin, a flavonoid-like chemical compound which was found in Scutellaria baicalensis, has anti-inflammatory effects in several inflammation models, but not in ALI. Here, the in vivo protective effect of wogonin in the amelioration of lipopolysaccharide (LPS) -induced lung injury and inflammation was assessed. In addition, the in vitro effects and mechanisms of wogonin were studied in the mouse macrophage cell lines Ana-1 and RAW264.7. In vivo results indicated that wogonin attenuated LPS-induced histological alterations. Peripheral blood leucocytes decreased in the LPS-induced group, which was ameliorated by wogonin. In addition, wogonin inhibited the production of several inflammatory cytokines, including tumour necrosis factor-α, interleukin-1β (IL-1β) and IL-6, in the bronchoalveolar lavage fluid and lung tissues after LPS challenge, while the peroxisome proliferator-activated receptor γ (PPARγ) inhibitor GW9662 reversed these effects. In vitro results indicated that wogonin significantly decreased the secretion of IL-6, IL-1β and tumour necrosis factor-α in Ana-1 and RAW264.7 cells, which was suppressed by transfection of PPARγ small interfering RNA and GW9662 treatment. Moreover, wogonin activated PPARγ, induced PPARγ-mediated attenuation of the nuclear translocation and the DNA-binding activity of nuclear factor-κB in vivo and in vitro. In conclusion, all of these results showed that wogonin may serve as a promising agent for the attenuation of ALI-associated inflammation and pathology by regulating the PPARγ-involved nuclear factor-κB pathway.
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Affiliation(s)
- Jing Yao
- Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, Nanjing, China; School of Life Science and Technology, China Pharmaceutical University, Nanjing, China
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Tavares E, Maldonado R, Miñano FJ. Immunoneutralization of Endogenous Aminoprocalcitonin Attenuates Sepsis-Induced Acute Lung Injury and Mortality in Rats. THE AMERICAN JOURNAL OF PATHOLOGY 2014; 184:3069-83. [DOI: 10.1016/j.ajpath.2014.07.025] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Revised: 05/28/2014] [Accepted: 07/07/2014] [Indexed: 12/22/2022]
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