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Chu FL, Li C, Liu Y, Dong B, Qiu Y, Fan G. Peripheral blood parameters for predicting PICU admission and mechanical ventilation in pediatric inpatients with human parainfluenza virus-induced pneumonia. J Med Virol 2023; 95:e28752. [PMID: 37185836 DOI: 10.1002/jmv.28752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 03/22/2023] [Accepted: 04/11/2023] [Indexed: 05/17/2023]
Abstract
Human parainfluenza viruses (hPIVs)-induced pneumonia is an important cause of pediatric hospitalization, and some develop severe pneumonias requiring pediatric intensive care unit (PICU) admission and mechanical ventilation (MV). The aim of this study is to investigate the value of peripheral blood (PB) parameters available on admission in predicting the need for PICU admission and MV due to pneumonia caused by hPIVs. A total of 331 cases including 277 (83.69%) on the general ward (GW) and 54 (16.31%) on the PICU were enrolled between January 2016 and June 2021. Of 54 patients admitted to the PICU, 24 patients (7.25%) received MV, whereas 30 (9.06%) did not. For both the PICU and GW groups, infants accounted for the highest proportion while school children had the lowest. Compared with the GW group, the PICU group had significantly higher rates of premature birth, fatigue, sore throat, headache, chest pain, tachypnea, dyspnea, and underlying diseases including congenital tracheal stenosis, congenital heart disease (CHD), metabolic disorder, and neurological disorder (ND), but significant lower proportion of exclusive breastfeeding and Z-scores for weight-for-height, weight-for-age, height-for-age, and body-mass-index (BMI)-for-age (BMIZ). Higher levels of some leukocyte differential counts (LDC)-related parameters including counts of neutrophil (N), ratios of neutrophil-to-lymphocyte ratio (NLR), derived neutrophils/(leukocytes minus neutrophils) ratio (dNLR), and platelet-to-lymphocyte ratio (PLR), lower levels of some other LDC-related parameters including lymphocyte (L) and monocyte (M) counts, ratios of lymphocyte-to-monocyte ratio (LMR), lymphocyte-to-C-reactive protein ratio, and prognostic nutritional index (PNI), and lower levels of PB protein (PBP)-related parameters including red blood cell (RBC), hemoglobin, total protein (TP), and serum albumin were observed in the PB of patients in the PICU compared with those in the GW. Notably, higher PLR level and two comorbidities including CHD and ND were identified as independent risk factors for PICU admission, while lower PNI level as well as smaller numbers of RBC and L as good predictors. Low levels of TP might be a useful predictor of the need for MV. Overall, the relative contributions of LDC- and PBP-related factors for accurate identification of patients required PICU admission accounted for 53.69% and 46.31%, respectively. Thus, determination of whether a patient with hPIVs-induced pneumonia is admitted to PICU involves consideration of both the LDC- and PBP-related parameters.
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Affiliation(s)
- Fu-Lu Chu
- Department of Clinical Laboratory, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, People's Republic of China
| | - Chen Li
- Department of Internal Medicine, Jinan Hospital, Jinan, Shandong, People's Republic of China
| | - Yiqing Liu
- Department of Clinical Laboratory, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, People's Republic of China
| | - Bo Dong
- Department of Cardiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, People's Republic of China
| | - Yang Qiu
- Department of Clinical Laboratory, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, People's Republic of China
| | - Gang Fan
- Department of Clinical Laboratory, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, People's Republic of China
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2
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Teuben MPJ, Heeres M, Blokhuis T, Spijkerman R, Knot E, Vrisekoop N, Pfeifer R, Pape HC, Koenderman L, Leenen LPH. Shift of Neutrophils From Blood to Bone Marrow Upon Extensive Experimental Trauma Surgery. Front Immunol 2022; 13:883863. [PMID: 35655784 PMCID: PMC9152003 DOI: 10.3389/fimmu.2022.883863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 03/29/2022] [Indexed: 11/13/2022] Open
Abstract
Introduction Extensive trauma surgery evokes an immediate cellular immune response including altered circulatory neutrophil numbers. The concurrent bone marrow (BM) response however is currently unclear. We hypothesize that these BM changes include (1) a relative reduction of the bone marrow neutrophil fraction and (2) increasing heterogeneity of the bone marrow neutrophil pool due to (3) the appearance of aged/returning neutrophils from circulation into the BM-compartment. Materials and Methods Eight pigs were included in a standardized extensive trauma surgery model. Blood and bone marrow samples were collected at baseline and after 3 hours of ongoing trauma surgery. Leukocyte and subtype counts and cell surface receptor expression levels were studied by flow cytometry. Results All animals survived the interventions. A significant drop in circulating neutrophil counts from 9.3 to 3.2x106 cells/ml (P=0.001) occurred after intervention, whereas circulatory neutrophil cell surface expression of CD11b increased. The concurrent bone marrow response included an increase of the BM neutrophil fraction from 63 ± 3 to 71 ± 3 percent (P<0.05). Simultaneously, the BM neutrophil pool became increasingly mature with a relative increase of a CXCR4high-neutrophil subtype that was virtually absent at baseline. Conclusion The current study shows a shift in composition of the BM neutrophil pool during extensive trauma surgery that was associated with a relatively circulatory neutropenia. More specifically, under these conditions BM neutrophils were more mature than under homeostatic conditions and a CXCR4high-neutrophil subset became overrepresented possibly reflecting remigration of aged neutrophils to the BM. These findings may contribute to the development of novel interventions aimed to modify the trauma-induced immune response in the BM.
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Affiliation(s)
- Michel P J Teuben
- Department of Trauma, University Medical Centre Utrecht, Utrecht, Netherlands.,Center for Translational Immunology, University Medical Centre Utrecht, Utrecht, Netherlands.,Department of Traumatology, University Hospital Zürich, Zürich, Switzerland
| | - Marjolein Heeres
- Department of Trauma, University Medical Centre Utrecht, Utrecht, Netherlands.,Center for Translational Immunology, University Medical Centre Utrecht, Utrecht, Netherlands
| | - Taco Blokhuis
- Department of Surgery, Maastricht University Medical Center, Maastricht, Netherlands
| | - Roy Spijkerman
- Department of Trauma, University Medical Centre Utrecht, Utrecht, Netherlands.,Department of Respiratory Medicine, University Medical Center Utrecht, Utrecht, Netherlands
| | - Eric Knot
- Department of Trauma, University Medical Centre Utrecht, Utrecht, Netherlands
| | - Nienke Vrisekoop
- Center for Translational Immunology, University Medical Centre Utrecht, Utrecht, Netherlands.,Department of Respiratory Medicine, University Medical Center Utrecht, Utrecht, Netherlands
| | - Roman Pfeifer
- Department of Traumatology, University Hospital Zürich, Zürich, Switzerland
| | | | - Leo Koenderman
- Center for Translational Immunology, University Medical Centre Utrecht, Utrecht, Netherlands.,Department of Respiratory Medicine, University Medical Center Utrecht, Utrecht, Netherlands
| | - Luke P H Leenen
- Department of Trauma, University Medical Centre Utrecht, Utrecht, Netherlands
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3
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Birindelli S, Tarkowski MS, Gallucci M, Schiuma M, Covizzi A, Lewkowicz P, Aloisio E, Falvella FS, Dolci A, Riva A, Galli M, Panteghini M. Definition of the Immune Parameters Related to COVID-19 Severity. Front Immunol 2022; 13:850846. [PMID: 35371011 PMCID: PMC8971756 DOI: 10.3389/fimmu.2022.850846] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Accepted: 02/23/2022] [Indexed: 01/08/2023] Open
Abstract
A relevant portion of patients with disease caused by the severe acute respiratory syndrome coronavirus 2 (COVID-19) experience negative outcome, and several laboratory tests have been proposed to predict disease severity. Among others, dramatic changes in peripheral blood cells have been described. We developed and validated a laboratory score solely based on blood cell parameters to predict survival in hospitalized COVID-19 patients. We retrospectively analyzed 1,619 blood cell count from 226 consecutively hospitalized COVID-19 patients to select parameters for inclusion in a laboratory score predicting severity of disease and survival. The score was derived from lymphocyte- and granulocyte-associated parameters and validated on a separate cohort of 140 consecutive COVID-19 patients. Using ROC curve analysis, a best cutoff for score of 30.6 was derived, which was associated to an overall 82.0% sensitivity (95% CI: 78–84) and 82.5% specificity (95% CI: 80–84) for detecting outcome. The scoring trend effectively separated survivor and non-survivor groups, starting 2 weeks before the end of the hospitalization period. Patients’ score time points were also classified into mild, moderate, severe, and critical according to the symptomatic oxygen therapy administered. Fluctuations of the score should be recorded to highlight a favorable or unfortunate trend of the disease. The predictive score was found to reflect and anticipate the disease gravity, defined by the type of the oxygen support used, giving a proof of its clinical relevance. It offers a fast and reliable tool for supporting clinical decisions and, most important, triage in terms of not only prioritization but also allocation of limited medical resources, especially in the period when therapies are still symptomatic and many are under development. In fact, a prolonged and progressive increase of the score can suggest impaired chances of survival and/or an urgent need for intensive care unit admission.
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Affiliation(s)
- Sarah Birindelli
- Clinical Pathology Unit, ASST Fatebenefratelli-Sacco, Milan, Italy
- *Correspondence: Sarah Birindelli,
| | - Maciej S. Tarkowski
- Department of Biomedical and Clinical Sciences, “Luigi Sacco”, University of Milan, Milan, Italy
| | - Marcello Gallucci
- Department of Psychology, University of Milano Bicocca, Milan, Italy
| | - Marco Schiuma
- Department of Infectious Diseases, Division III, ASST Fatebenefratelli-Sacco, Milan, Italy
| | - Alice Covizzi
- Department of Infectious Diseases, Division III, ASST Fatebenefratelli-Sacco, Milan, Italy
| | | | - Elena Aloisio
- Clinical Pathology Unit, ASST Fatebenefratelli-Sacco, Milan, Italy
| | | | - Alberto Dolci
- Clinical Pathology Unit, ASST Fatebenefratelli-Sacco, Milan, Italy
- Department of Biomedical and Clinical Sciences, “Luigi Sacco”, University of Milan, Milan, Italy
| | - Agostino Riva
- Department of Biomedical and Clinical Sciences, “Luigi Sacco”, University of Milan, Milan, Italy
- Department of Infectious Diseases, Division III, ASST Fatebenefratelli-Sacco, Milan, Italy
| | - Massimo Galli
- Department of Biomedical and Clinical Sciences, “Luigi Sacco”, University of Milan, Milan, Italy
- Department of Infectious Diseases, Division III, ASST Fatebenefratelli-Sacco, Milan, Italy
| | - Mauro Panteghini
- Clinical Pathology Unit, ASST Fatebenefratelli-Sacco, Milan, Italy
- Department of Biomedical and Clinical Sciences, “Luigi Sacco”, University of Milan, Milan, Italy
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4
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Blanter M, Cockx M, Wittebols L, Abouelasrar Salama S, De Bondt M, Berghmans N, Pörtner N, Vanbrabant L, Lorent N, Gouwy M, Boon M, Struyf S. Sputum from patients with primary ciliary dyskinesia contains high numbers of dysfunctional neutrophils and inhibits efferocytosis. Respir Res 2022; 23:359. [PMID: 36528664 PMCID: PMC9758951 DOI: 10.1186/s12931-022-02280-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 12/05/2022] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Primary ciliary dyskinesia (PCD) is a genetic disorder characterized by recurrent airway infection and inflammation. There is no cure for PCD and to date there are no specific treatments available. Neutrophils are a crucial part of the immune system and are known to be dysfunctional in many inflammatory diseases. So far, the role of the neutrophils in PCD airways is largely unknown. The purpose of this study was to investigate the phenotype and function of airway neutrophils in PCD, and compare them to blood neutrophils. METHODS Paired peripheral blood and spontaneously expectorated sputum samples from patients with PCD (n = 32) and a control group of patients with non-PCD, non-cystic fibrosis bronchiectasis (n = 5) were collected. The expression of neutrophil-specific surface receptors was determined by flow cytometry. Neutrophil function was assessed by measuring the extent of actin polymerization, production of reactive oxygen species (ROS) and release of neutrophil extracellular traps (NETs) in response to activating stimuli. RESULTS Sputum neutrophils displayed a highly activated phenotype and were unresponsive to stimuli that would normally induce ROS production, actin polymerization and the expulsion of NETs. In addition, PCD sputum displayed high activity of neutrophil elastase, and impaired the efferocytosis by healthy donor macrophages. CONCLUSIONS Sputum neutrophils in PCD are dysfunctional and likely contribute to ongoing inflammation in PCD airways. Further research should focus on anti-inflammatory therapies and stimulation of efferocytosis as a strategy to treat PCD.
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Affiliation(s)
- Marfa Blanter
- grid.5596.f0000 0001 0668 7884Laboratory of Molecular Immunology, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, University of Leuven, 3000 Leuven, Belgium
| | - Maaike Cockx
- grid.5596.f0000 0001 0668 7884Laboratory of Molecular Immunology, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, University of Leuven, 3000 Leuven, Belgium
| | - Liesel Wittebols
- grid.5596.f0000 0001 0668 7884Laboratory of Molecular Immunology, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, University of Leuven, 3000 Leuven, Belgium
| | - Sara Abouelasrar Salama
- grid.5596.f0000 0001 0668 7884Laboratory of Molecular Immunology, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, University of Leuven, 3000 Leuven, Belgium
| | - Mirre De Bondt
- grid.5596.f0000 0001 0668 7884Laboratory of Molecular Immunology, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, University of Leuven, 3000 Leuven, Belgium
| | - Nele Berghmans
- grid.5596.f0000 0001 0668 7884Laboratory of Molecular Immunology, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, University of Leuven, 3000 Leuven, Belgium
| | - Noëmie Pörtner
- grid.5596.f0000 0001 0668 7884Laboratory of Molecular Immunology, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, University of Leuven, 3000 Leuven, Belgium
| | - Lotte Vanbrabant
- grid.5596.f0000 0001 0668 7884Laboratory of Molecular Immunology, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, University of Leuven, 3000 Leuven, Belgium
| | - Natalie Lorent
- grid.410569.f0000 0004 0626 3338Pneumology and Cystic Fibrosis Unit, Department of Pneumology, University Hospitals Leuven, 3000 Leuven, Belgium
| | - Mieke Gouwy
- grid.5596.f0000 0001 0668 7884Laboratory of Molecular Immunology, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, University of Leuven, 3000 Leuven, Belgium
| | - Mieke Boon
- grid.410569.f0000 0004 0626 3338Pediatric Pneumology and Cystic Fibrosis Unit, Department of Pediatrics, University Hospitals Leuven, 3000 Leuven, Belgium
| | - Sofie Struyf
- grid.5596.f0000 0001 0668 7884Laboratory of Molecular Immunology, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, University of Leuven, 3000 Leuven, Belgium
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5
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Abbiati RA, Pourdehnad M, Carrancio S, Pierce DW, Kasibhatla S, McConnell M, Trotter MWB, Loos R, Santini CC, Ratushny AV. Quantitative Systems Pharmacology Modeling of Avadomide-Induced Neutropenia Enables Virtual Clinical Dose and Schedule Finding Studies. AAPS J 2021; 23:103. [PMID: 34453265 PMCID: PMC8397660 DOI: 10.1208/s12248-021-00623-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 07/03/2021] [Indexed: 01/02/2023] Open
Abstract
Avadomide is a cereblon E3 ligase modulator and a potent antitumor and immunomodulatory agent. Avadomide trials are challenged by neutropenia as a major adverse event and a dose-limiting toxicity. Intermittent dosing schedules supported by preclinical data provide a strategy to reduce frequency and severity of neutropenia; however, the identification of optimal dosing schedules remains a clinical challenge. Quantitative systems pharmacology (QSP) modeling offers opportunities for virtual screening of efficacy and toxicity levels produced by alternative dose and schedule regimens, thereby supporting decision-making in translational drug development. We formulated a QSP model to capture the mechanism of avadomide-induced neutropenia, which involves cereblon-mediated degradation of transcription factor Ikaros, resulting in a maturation block of the neutrophil lineage. The neutropenia model was integrated with avadomide-specific pharmacokinetic and pharmacodynamic models to capture dose-dependent effects. Additionally, we generated a disease-specific virtual patient population to represent the variability in patient characteristics and response to treatment observed for a diffuse large B-cell lymphoma trial cohort. Model utility was demonstrated by simulating the avadomide effect in the virtual population for various dosing schedules and determining the incidence of high-grade neutropenia, its duration, and the probability of recovery to low-grade neutropenia.
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Affiliation(s)
- Roberto A Abbiati
- Bristol Myers Squibb, Center for Innovation and Translational Research Europe (CITRE), Seville, Spain.
| | | | | | | | | | | | - Matthew W B Trotter
- Bristol Myers Squibb, Center for Innovation and Translational Research Europe (CITRE), Seville, Spain
| | - Remco Loos
- Bristol Myers Squibb, Center for Innovation and Translational Research Europe (CITRE), Seville, Spain
| | - Cristina C Santini
- Roche Pharma Research and Early Development, Pharmaceutical Sciences, Roche Innovation Center, Basel, Switzerland
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6
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Dennison D, Al Khabori M, Al Mamari S, Aurelio A, Al Hinai H, Al Maamari K, Alshekaili J, Al Khadouri G. Circulating activated neutrophils in COVID-19: An independent predictor for mechanical ventilation and death. Int J Infect Dis 2021; 106:155-159. [PMID: 33781906 PMCID: PMC7997692 DOI: 10.1016/j.ijid.2021.03.066] [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: 12/31/2020] [Revised: 03/21/2021] [Accepted: 03/23/2021] [Indexed: 12/26/2022] Open
Abstract
OBJECTIVES Critical illness in COVID-19 is attributed to an exaggerated host immune response. Since neutrophils are the major component of innate immunity, we hypothesize that the quantum of activated neutrophils in the blood may predict an adverse outcome. DESIGN In a retrospective study of 300 adult patients with confirmed COVID-19, we analyzed the impact of neutrophil activation (NEUT-RI), interleukin-6 (IL-6) and the established clinical risk factors of age, diabetes, obesity and hypertension on the clinical outcome. RESULTS Significant predictors of the need for mechanical ventilation were NEUT-RI (Odds Ratio (OR) = 1.22, P < 0.001), diabetes (OR = 2.56, P = 0.00846) and obesity (OR = 6.55, P < 0.001). For death, the significant predictors were NEUT-RI (OR = 1.14, P = 0.00432), diabetes (OR = 4.11, P = 0.00185) and age (OR = 1.04, P = 0.00896). The optimal cut-off value for NEUT-RI to predict mechanical ventilation and death was 52 fluorescence intensity units (sensitivity 44%, specificity 88%, area under the curve 0.67 and 44%, 86%, 0.64, respectively). CONCLUSION This finding supports an aberrant neutrophil response in COVID-19, likely due to uncontained viral replication, tissue hypoxia and exacerbated inflammation, introduces a novel biomarker for rapid monitoring and opens new avenues for therapeutic strategies.
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Affiliation(s)
- David Dennison
- Department of Hematology, Sultan Qaboos University Hospital, Oman.
| | | | | | - Allan Aurelio
- Department of Hematology, Sultan Qaboos University Hospital, Oman.
| | - Houda Al Hinai
- Department of Hematology, Sultan Qaboos University Hospital, Oman.
| | - Khuloud Al Maamari
- Department of Microbiology and Immunology, Sultan Qaboos University Hospital, Oman.
| | - Jalila Alshekaili
- Department of Microbiology and Immunology, Sultan Qaboos University Hospital, Oman.
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7
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Lamin A/C and the Immune System: One Intermediate Filament, Many Faces. Int J Mol Sci 2020; 21:ijms21176109. [PMID: 32854281 PMCID: PMC7504305 DOI: 10.3390/ijms21176109] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 08/19/2020] [Accepted: 08/21/2020] [Indexed: 12/11/2022] Open
Abstract
Nuclear envelope lamin A/C proteins are a major component of the mammalian nuclear lamina, a dense fibrous protein meshwork located in the nuclear interior. Lamin A/C proteins regulate nuclear mechanics and structure and control cellular signaling, gene transcription, epigenetic regulation, cell cycle progression, cell differentiation, and cell migration. The immune system is composed of the innate and adaptive branches. Innate immunity is mediated by myeloid cells such as neutrophils, macrophages, and dendritic cells. These cells produce a rapid and nonspecific response through phagocytosis, cytokine production, and complement activation, as well as activating adaptive immunity. Specific adaptive immunity is activated by antigen presentation by antigen presenting cells (APCs) and the cytokine microenvironment, and is mainly mediated by the cellular functions of T cells and the production of antibodies by B cells. Unlike most cell types, immune cells regulate their lamin A/C protein expression relatively rapidly to exert their functions, with expression increasing in macrophages, reducing in neutrophils, and increasing transiently in T cells. In this review, we discuss and summarize studies that have addressed the role played by lamin A/C in the functions of innate and adaptive immune cells in the context of human inflammatory and autoimmune diseases, pathogen infections, and cancer.
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8
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Brostjan C, Oehler R. The role of neutrophil death in chronic inflammation and cancer. Cell Death Discov 2020; 6:26. [PMID: 32351713 PMCID: PMC7176663 DOI: 10.1038/s41420-020-0255-6] [Citation(s) in RCA: 76] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 03/13/2020] [Accepted: 03/23/2020] [Indexed: 02/06/2023] Open
Abstract
The lifespan of a neutrophil is short and limited by programmed cell death, followed by efferocytosis. When activated or exposed to insult, neutrophil death may be delayed to support neutrophil effector functions such as phagocytosis, cytokine release, and pathogen destruction by degranulation. However, neutrophils may also alter the type of cell death and thereby affect inflammatory responses and tissue remodeling. This review briefly introduces the various forms of neutrophil death including apoptosis, necrosis/necroptosis, and the formation of so-called "neutrophil extracellular traps" (NETs), and it summarizes the clearance of dead cells by efferocytosis. Importantly, distinct types of neutrophil death have been found to drive chronic inflammatory disorders and cancer. Thus, the tumor and its microenvironment can delay neutrophil apoptosis to exploit their pro-angiogenic and pro-metastatic properties. Conversely, neutrophils may enter rapid and suicidal cell death by forming extracellular traps, which are expelled DNA strands with neutrophil proteins. Components of these DNA-protein complexes such as histones, high-mobility group protein B1, or neutrophil elastase have been found to promote cancer cell proliferation, adhesion, migration, invasion, and thereby tumor metastasis. In other settings of chronic inflammatory disease such as gout, NETs have been found protective rather than detrimental, as they promoted the local degradation of pro-inflammatory cytokines by neutrophil proteases. Thus, the interaction of neutrophils with the tissue environment extends beyond the stage of the living cell and the type of neutrophil death shapes immune responses and tissue remodeling in health and disease.
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Affiliation(s)
| | - Rudolf Oehler
- Department of Surgery, Medical University of Vienna, Vienna, Austria
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9
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Rungelrath V, Kobayashi SD, DeLeo FR. Neutrophils in innate immunity and systems biology-level approaches. WILEY INTERDISCIPLINARY REVIEWS-SYSTEMS BIOLOGY AND MEDICINE 2019; 12:e1458. [PMID: 31218817 DOI: 10.1002/wsbm.1458] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 05/22/2019] [Accepted: 05/23/2019] [Indexed: 12/14/2022]
Abstract
The innate immune system is the first line of host defense against invading microorganisms. Polymorphonuclear leukocytes (PMNs or neutrophils) are the most abundant leukocyte in humans and essential to the innate immune response against invading pathogens. Compared to the acquired immune response, which requires time to develop and is dependent on previous interaction with specific microbes, the ability of neutrophils to kill microorganisms is immediate, nonspecific, and not dependent on previous exposure to microorganisms. Historically, studies of PMN-pathogen interaction focused on the events leading to killing of microorganisms, such as recruitment/chemotaxis, transmigration, phagocytosis, and activation, whereas postphagocytosis sequelae were infrequently considered. In addition, it was widely accepted that human neutrophils possessed limited capacity for new gene transcription and thus, relatively little biosynthetic capacity. This notion has changed dramatically within the past 20 years. Further, there is now more effort directed to understand the events occurring in PMNs after killing of microbes. Herein, we give an updated review of the systems biology-level approaches that have been used to gain an enhanced view of the role of neutrophils during host-pathogen interaction and neutrophil-mediated diseases. We anticipate that these and future systems-level studies will continue to provide information important for understanding, treatment, and control of diseases caused by pathogenic microorganisms. This article is categorized under: Physiology > Organismal Responses to Environment Physiology > Mammalian Physiology in Health and Disease Biological Mechanisms > Cell Fates.
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Affiliation(s)
- Viktoria Rungelrath
- Laboratory of Bacteriology, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, Montana
| | - Scott D Kobayashi
- Laboratory of Bacteriology, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, Montana
| | - Frank R DeLeo
- Laboratory of Bacteriology, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, Montana
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10
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Hidalgo A, Chilvers ER, Summers C, Koenderman L. The Neutrophil Life Cycle. Trends Immunol 2019; 40:584-597. [PMID: 31153737 DOI: 10.1016/j.it.2019.04.013] [Citation(s) in RCA: 230] [Impact Index Per Article: 46.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 04/25/2019] [Accepted: 04/28/2019] [Indexed: 02/07/2023]
Abstract
Neutrophils are recognized as an essential part of the innate immune response, but an active debate still exists regarding the life cycle of these cells. Neutrophils first differentiate in the bone marrow through progenitor intermediaries before entering the blood, in a process that gauges the extramedullary pool size. Once believed to be directly eliminated in the marrow, liver, and spleen, neutrophils, after circulating for less than 1 day, are now known to redistribute into multiple tissues with poorly understood kinetics. In this review, we provide an update on the dynamic distribution of neutrophils across tissues in health and disease, and emphasize differences between humans and model organisms. We further highlight issues to be addressed to exploit the unique features of neutrophils in the clinic.
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Affiliation(s)
- Andrés Hidalgo
- Area of Developmental and Cell Biology, Centro Nacional de Investigaciones, Cardiovasculares Carlos III (CNIC), Madrid, Spain; Institute for Cardiovascular Prevention (IPEK), Ludwig-Maximilians-Universität München, Munich, Germany; German Centre for Cardiovascular Research (DZHK), partner site Munich Heart Alliance, Munich, Germany.
| | - Edwin R Chilvers
- National Heart and Lung Institute, Imperial College London, London, UK.
| | - Charlotte Summers
- Department of Medicine, University of Cambridge School of Clinical Medicine, Cambridge, UK.
| | - Leo Koenderman
- Laboratory of Translational Immunology, Department of Respiratory Medicine, University Medical Centre Utrecht, Utrecht, The Netherlands.
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11
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Daix T, Guérin E, Tavernier E, Marsaud J, Hacan A, Gauthier F, Piccardo A, Vignon P, Feuillard J, François B. Immature Granulocytes: A Risk Factor of Infection after Cardiac Surgery. CYTOMETRY PART B-CLINICAL CYTOMETRY 2018; 94:887-894. [DOI: 10.1002/cyto.b.21739] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Revised: 08/06/2018] [Accepted: 09/06/2018] [Indexed: 12/17/2022]
Affiliation(s)
- Thomas Daix
- Inserm CIC1435Dupuytren Teaching Hospital Limoges France
- Réanimation PolyvalenteDupuytren Teaching Hospital Limoges France
| | - Estelle Guérin
- Hematology LaboratoryDupuytren Teaching Hospital Limoges France
- Medicine University UMR CNRS 7276 Limoges France
| | - Elsa Tavernier
- Inserm CIC1415, Tours Teaching HospitalFrançois Rabelais University Tours France
| | | | - Adélaïde Hacan
- Hematology LaboratoryDupuytren Teaching Hospital Limoges France
| | | | - Alessandro Piccardo
- Cardiothoracic and Vascular Surgery UnitDupuytren Teaching Hospital Limoges France
| | - Philippe Vignon
- Inserm CIC1435Dupuytren Teaching Hospital Limoges France
- Réanimation PolyvalenteDupuytren Teaching Hospital Limoges France
- UMR 1092Medicine University Limoges France
| | - Jean Feuillard
- Hematology LaboratoryDupuytren Teaching Hospital Limoges France
- Medicine University UMR CNRS 7276 Limoges France
| | - Bruno François
- Inserm CIC1435Dupuytren Teaching Hospital Limoges France
- Réanimation PolyvalenteDupuytren Teaching Hospital Limoges France
- UMR 1092Medicine University Limoges France
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Faulhaber FRS, Faulhaber GAM, Marcondes NA, Procianoy RS, Silveira RC. Expression of neutrophil surface markers in icteric neonates before and after phototherapy. CYTOMETRY PART B-CLINICAL CYTOMETRY 2018; 94:895-900. [DOI: 10.1002/cyto.b.21734] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 07/09/2018] [Accepted: 07/27/2018] [Indexed: 12/22/2022]
Affiliation(s)
- Fabrízia Rennó Sodero Faulhaber
- Programa de Pós‐Graduação em Saúde da Criança e do AdolescenteUniversidade Federal do Rio Grande do Sul Porto Alegre Brazil
- Serviço de Onco‐Hematologia PediátricaHospital Nossa Senhora da Conceição Porto Alegre Brazil
| | - Gustavo Adolpho Moreira Faulhaber
- Laboratório Zanol Porto Alegre Brazil
- Programa de Pós Graduação em Medicina: Ciências MédicasUniversidade Federal do Rio Grande do Sul Porto Alegre Brazil
- Departmento de Medicina InternaUniversidade Federal do Rio Grande do Sul Porto Alegre Brazil
| | | | - Renato Soibelmann Procianoy
- Programa de Pós‐Graduação em Saúde da Criança e do AdolescenteUniversidade Federal do Rio Grande do Sul Porto Alegre Brazil
- Departmento de PediatriaUniversidade Federal do Rio Grande do Sul Porto Alegre Brazil
- Departmento de PediatriaHospital de Clínicas de Porto Alegre Porto Alegre Brazil
| | - Rita C. Silveira
- Programa de Pós‐Graduação em Saúde da Criança e do AdolescenteUniversidade Federal do Rio Grande do Sul Porto Alegre Brazil
- Departmento de PediatriaUniversidade Federal do Rio Grande do Sul Porto Alegre Brazil
- Departmento de PediatriaHospital de Clínicas de Porto Alegre Porto Alegre Brazil
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Daix T, Guerin E, Tavernier E, Mercier E, Gissot V, Hérault O, Mira JP, Dumas F, Chapuis N, Guitton C, Béné MC, Quenot JP, Tissier C, Guy J, Piton G, Roggy A, Muller G, Legac É, de Prost N, Khellaf M, Wagner-Ballon O, Coudroy R, Dindinaud E, Uhel F, Roussel M, Lafon T, Jeannet R, Vargas F, Fleureau C, Roux M, Allou K, Vignon P, Feuillard J, François B. Multicentric Standardized Flow Cytometry Routine Assessment of Patients With Sepsis to Predict Clinical Worsening. Chest 2018; 154:617-627. [PMID: 29705219 DOI: 10.1016/j.chest.2018.03.058] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Revised: 02/21/2018] [Accepted: 03/19/2018] [Indexed: 10/17/2022] Open
Abstract
BACKGROUND In this study, we primarily sought to assess the ability of flow cytometry to predict early clinical deterioration and overall survival in patients with sepsis admitted in the ED and ICU. METHODS Patients admitted for community-acquired acute sepsis from 11 hospital centers were eligible. Early (day 7) and late (day 28) deaths were notified. Levels of CD64pos granulocytes, CD16pos monocytes, CD16dim immature granulocytes (IGs), and T and B lymphocytes were assessed by flow cytometry using an identical, cross-validated, robust, and simple consensus standardized protocol in each center. RESULTS Among 1,062 patients screened, 781 patients with confirmed sepsis were studied (age, 67 ± 48 years; Simplified Acute Physiology Score II, 36 ± 17; Sequential Organ Failure Assessment, 5 ± 4). Patients were divided into three groups (sepsis, severe sepsis, and septic shock) on day 0 and on day 2. On day 0, patients with sepsis exhibited increased levels of CD64pos granulocytes, CD16pos monocytes, and IGs with T-cell lymphopenia. Clinical severity was associated with higher percentages of IGs and deeper T-cell lymphopenia. IG percentages tended to be higher in patients whose clinical status worsened on day 2 (35.1 ± 35.6 vs 43.5 ± 35.2, P = .07). Increased IG percentages were also related to occurrence of new organ failures on day 2. Increased IG percentages, especially when associated with T-cell lymphopenia, were independently associated with early (P < .01) and late (P < .01) death. CONCLUSIONS Increased circulating IGs at the acute phase of sepsis are linked to clinical worsening, especially when associated with T-cell lymphopenia. Early flow cytometry could help clinicians to target patients at high risk of clinical deterioration. TRIAL REGISTRY ClinicalTrials.gov; No.: NCT01995448; URL: www.clinicaltrials.gov.
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Affiliation(s)
- Thomas Daix
- Réanimation Polyvalente, CHU Dupuytren, Limoges, France; Inserm CIC1435, CHU Dupuytren, Limoges, France
| | - Estelle Guerin
- Hématologie Biologique, CHU Dupuytren, Limoges, France; CNRS UMR 7276, Université de Limoges, Limoges, France
| | - Elsa Tavernier
- Inserm CIC1415, CHRU and Université François Rabelais, Tours, France
| | | | - Valérie Gissot
- Inserm CIC1415, CHRU and Université François Rabelais, Tours, France
| | | | - Jean-Paul Mira
- Réanimation Médicale Polyvalente, Hôpital Cochin, Assistance Publique des Hôpitaux de Paris, Paris, France
| | - Florence Dumas
- Urgences, Hôpital Cochin/Hôtel-Dieu, Assistance Publique des Hôpitaux de Paris and Inserm UMR 970, Université Paris Descartes, Paris, France
| | - Nicolas Chapuis
- Hématologie Biologique, Hôpital Cochin, Assistance Publique des Hôpitaux de Paris, Paris, France
| | | | - Marie C Béné
- Hématologie Biologique, CHU de Nantes, Nantes, France
| | - Jean-Pierre Quenot
- Réanimation Polyvalente, CHU François Mitterrand and Lipness Team, Centre de Recherche Inserm LNC-UMR1231 and LabExLipSTIC and Inserm CIC 1432, Epidémiologie Clinique, Université de Bourgogne, Dijon, France
| | | | - Julien Guy
- Hématologie Biologique, CHU de Dijon, Dijon, France
| | - Gaël Piton
- Réanimation Médicale, CHRU de Besançon, Université de Franche Comte, UFR SMP, EA3920, Besançon, France
| | - Anne Roggy
- Inserm UMR1098 and Laboratoire d'Immunologie, EFS BFC, Besançon, France
| | | | - Éric Legac
- Hématologie Biologique, CHR d'Orléans, Orléans, France
| | - Nicolas de Prost
- Réanimation Médicale, CHU Henri Mondor, Assistance Publique-Hôpitaux de Paris, DHU A-TVB, and Université Paris Est Créteil, Faculté de Médecine de Créteil, Groupe de Recherche CARMAS, Créteil, France
| | - Mehdi Khellaf
- Urgences, Assistance Publique-Hôpitaux de Paris, CHU Henri Mondor, Créteil, France
| | - Orianne Wagner-Ballon
- Hématologie et Immunologie Biologiques, Assistance Publique-Hôpitaux de Paris, CHU Henri Mondor and Université Paris-Est Créteil, Inserm UMR 955, Créteil, France
| | - Rémi Coudroy
- Réanimation Médicale, CHU de Poitiers, Poitiers, France
| | | | - Fabrice Uhel
- Réanimation Médicale and Inserm CIC1414, CHU de Rennes, and Inserm UMR 917, Université de Rennes, Rennes, France
| | - Mikaël Roussel
- Hématologie Biologique and Inserm UMR 1236, CHU Pontchaillou, Rennes, France
| | - Thomas Lafon
- Inserm CIC1435, CHU Dupuytren, Limoges, France; Urgences, CHU Dupuytren, Limoges, France
| | - Robin Jeannet
- Hématologie Biologique, CHU Dupuytren, Limoges, France
| | | | | | | | - Kaoutar Allou
- Hématologie Biologique, CHU de Bordeaux, Bordeaux, France
| | - Philippe Vignon
- Réanimation Polyvalente, CHU Dupuytren, Limoges, France; Inserm CIC1435, CHU Dupuytren, Limoges, France; Inserm UMR 1092, Université de Limoges, Limoges, France
| | - Jean Feuillard
- Hématologie Biologique, CHU Dupuytren, Limoges, France; CNRS UMR 7276, Université de Limoges, Limoges, France
| | - Bruno François
- Réanimation Polyvalente, CHU Dupuytren, Limoges, France; Inserm CIC1435, CHU Dupuytren, Limoges, France; Inserm UMR 1092, Université de Limoges, Limoges, France.
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14
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Sodhi CP, Wohlford-Lenane C, Yamaguchi Y, Prindle T, Fulton WB, Wang S, McCray PB, Chappell M, Hackam DJ, Jia H. Attenuation of pulmonary ACE2 activity impairs inactivation of des-Arg 9 bradykinin/BKB1R axis and facilitates LPS-induced neutrophil infiltration. Am J Physiol Lung Cell Mol Physiol 2017; 314:L17-L31. [PMID: 28935640 DOI: 10.1152/ajplung.00498.2016] [Citation(s) in RCA: 250] [Impact Index Per Article: 35.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Angiotensin-converting enzyme 2 (ACE2) is a terminal carboxypeptidase with important functions in the renin-angiotensin system and plays a critical role in inflammatory lung diseases. ACE2 cleaves single-terminal residues from several bioactive peptides such as angiotensin II. However, few of its substrates in the respiratory tract have been identified, and the mechanism underlying the role of ACE2 in inflammatory lung disease has not been fully characterized. In an effort to identify biological targets of ACE2 in the lung, we tested its effects on des-Arg9 bradykinin (DABK) in airway epithelial cells on the basis of the hypothesis that DABK is a biological substrate of ACE2 in the lung and ACE2 plays an important role in the pathogenesis of acute lung inflammation partly through modulating DABK/bradykinin receptor B1 (BKB1R) axis signaling. We found that loss of ACE2 function in mouse lung in the setting of endotoxin inhalation led to activation of the DABK/BKB1R axis, release of proinflammatory chemokines such as C-X-C motif chemokine 5 (CXCL5), macrophage inflammatory protein-2 (MIP2), C-X-C motif chemokine 1 (KC), and TNF-α from airway epithelia, increased neutrophil infiltration, and exaggerated lung inflammation and injury. These results indicate that a reduction in pulmonary ACE2 activity contributes to the pathogenesis of lung inflammation, in part because of an impaired ability to inhibit DABK/BKB1R axis-mediated signaling, resulting in more prompt onset of neutrophil infiltration and more severe inflammation in the lung. Our study identifies a biological substrate of ACE2 within the airways, as well as a potential new therapeutic target for inflammatory diseases.
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Affiliation(s)
- Chhinder P Sodhi
- Division of Pediatric Surgery, Department of Surgery, Johns Hopkins University , Baltimore, Maryland
| | | | - Yukihiro Yamaguchi
- Division of Pediatric Surgery, Department of Surgery, Johns Hopkins University , Baltimore, Maryland
| | - Thomas Prindle
- Division of Pediatric Surgery, Department of Surgery, Johns Hopkins University , Baltimore, Maryland
| | - William B Fulton
- Division of Pediatric Surgery, Department of Surgery, Johns Hopkins University , Baltimore, Maryland
| | - Sanxia Wang
- Division of Pediatric Surgery, Department of Surgery, Johns Hopkins University , Baltimore, Maryland
| | - Paul B McCray
- Department of Pediatrics, Carver College of Medicine, The University of Iowa , Iowa City, Iowa
| | - Mark Chappell
- Hypertension and Vascular Research Center, Wake Forest School of Medicine , Winston-Salem, North Carolina
| | - David J Hackam
- Division of Pediatric Surgery, Department of Surgery, Johns Hopkins University , Baltimore, Maryland
| | - Hongpeng Jia
- Division of Pediatric Surgery, Department of Surgery, Johns Hopkins University , Baltimore, Maryland
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15
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Bae MH, Park SH, Park CJ, Cho EJ, Lee BR, Kim YJ, Park SH, Cho YU, Jang S, Song DK, Hong SB. Flow cytometric measurement of respiratory burst activity and surface expression of neutrophils for septic patient prognosis. CYTOMETRY PART B-CLINICAL CYTOMETRY 2015. [DOI: 10.1002/cyto.b.21274] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Mi Hyun Bae
- Department of Laboratory Medicine; University of Ulsan College of Medicine and Asan Medical Center; Seoul Korea
| | - So Hee Park
- Department of Internal Medicine; University of Ulsan College of Medicine and Asan Medical Center; Seoul Korea
| | - Chan-Jeoung Park
- Department of Laboratory Medicine; University of Ulsan College of Medicine and Asan Medical Center; Seoul Korea
| | - Eun-Jung Cho
- Department of Laboratory Medicine; University of Ulsan College of Medicine and Asan Medical Center; Seoul Korea
| | - Bo-Ra Lee
- Department of Laboratory Medicine; University of Ulsan College of Medicine and Asan Medical Center; Seoul Korea
| | - Young Jin Kim
- Department of Laboratory Medicine; University of Ulsan College of Medicine and Asan Medical Center; Seoul Korea
| | - Sang Hyuk Park
- Department of Laboratory Medicine; Pusan National University School of Medicine, Pusan National University Hospital; Busan Korea
| | - Young-Uk Cho
- Department of Laboratory Medicine; University of Ulsan College of Medicine and Asan Medical Center; Seoul Korea
| | - Seongsoo Jang
- Department of Laboratory Medicine; University of Ulsan College of Medicine and Asan Medical Center; Seoul Korea
| | - Dong-Keun Song
- Department of Pharmacology, College of Medicine; Hallym University; Chooncheon Korea
| | - Sang-Bum Hong
- Department of Internal Medicine; University of Ulsan College of Medicine and Asan Medical Center; Seoul Korea
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16
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Circulating Immature Granulocytes With T-Cell Killing Functions Predict Sepsis Deterioration*. Crit Care Med 2014; 42:2007-18. [DOI: 10.1097/ccm.0000000000000344] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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17
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Nuutila J, Jalava-Karvinen P, Hohenthal U, Kotilainen P, Pelliniemi TT, Nikoskelainen J, Lilius EM. Bacterial infection (BI)-INDEX: an improved and simplified rapid flow cytometric bacterial infection marker. Diagn Microbiol Infect Dis 2013; 78:116-26. [PMID: 24315569 DOI: 10.1016/j.diagmicrobio.2013.10.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2013] [Revised: 10/11/2013] [Accepted: 10/11/2013] [Indexed: 12/21/2022]
Abstract
The aim of this study was to develop a rapid and simple flow cytometric bacterial infection marker. In this prospective comparative study, quantitative flow cytometric analysis of CD10, CD35, CD66b, CD282, and MHC Class I molecules on human neutrophils, monocytes, and B-lymphocytes from 141 hospitalized febrile patients with suspected infection and from 50 healthy controls was performed. We developed a flow cytometric marker of local and systemic bacterial infections, designated "bacterial infection (BI)-INDEX", incorporating the quantitative analysis of CD10, CD35, MHCI, CD66b, and CD282 on neutrophils, monocytes, and B-lymphocytes, which displayed 90% sensitivity and 96% specificity in distinguishing between microbiologically confirmed bacterial (n = 31) and viral infections (n = 27) within a 1-h time-frame. We propose that our novel rapid BI-INDEX test will be useful in assisting physicians to ascertain whether antibiotic treatment is required, thus limiting unnecessary antimicrobial usage.
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Affiliation(s)
- Jari Nuutila
- Department of Biochemistry, University of Turku, 20014 Turku, Finland.
| | | | - Ulla Hohenthal
- Department of Medicine, Turku University Hospital, 20521 Turku, Finland
| | - Pirkko Kotilainen
- Department of Medicine, Turku University Hospital, 20521 Turku, Finland
| | | | | | - Esa-Matti Lilius
- Department of Biochemistry, University of Turku, 20014 Turku, Finland
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Neutrophil Dynamics in Peritoneal Carcinomatosis Patients Treated with Cytoreductive Surgery and Hyperthermic Intraperitoneal Oxaliplatin. Clin Pharmacokinet 2013; 52:1111-25. [DOI: 10.1007/s40262-013-0092-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Denny MF, Yalavarthi S, Zhao W, Thacker SG, Anderson M, Sandy AR, McCune WJ, Kaplan MJ. A distinct subset of proinflammatory neutrophils isolated from patients with systemic lupus erythematosus induces vascular damage and synthesizes type I IFNs. THE JOURNAL OF IMMUNOLOGY 2010; 184:3284-97. [PMID: 20164424 DOI: 10.4049/jimmunol.0902199] [Citation(s) in RCA: 503] [Impact Index Per Article: 35.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Neutrophil-specific genes are abundant in PBMC microarrays from lupus patients because of the presence of low-density granulocytes (LDGs) in mononuclear cell fractions. The functionality and pathogenicity of these LDGs have not been characterized. We developed a technique to purify LDGs from lupus PBMCs and assessed their phenotype, function, and potential role in disease pathogenesis. LDGs, their autologous lupus neutrophils, and healthy control neutrophils were compared with regard to their microbicidal and phagocytic capacities, generation of reactive oxygen species, activation status, inflammatory cytokine profile, and type I IFN expression and signatures. The capacity of LDGs to kill endothelial cells and their antiangiogenic potential were also assessed. LDGs display an activated phenotype, secrete increased levels of type I IFNs, TNF-alpha, and IFN-gamma, but show impaired phagocytic potential. LDGs induce significant endothelial cell cytotoxicity and synthesize sufficient levels of type I IFNs to disrupt the capacity of endothelial progenitor cells to differentiate into mature endothelial cells. LDG depletion restores the functional capacity of endothelial progenitor cells. We conclude that lupus LDGs are proinflammatory and display pathogenic features, including the capacity to synthesize type I IFNs. They may play an important dual role in premature cardiovascular disease development in systemic lupus erythematosus by simultaneously mediating enhanced vascular damage and inhibiting vascular repair.
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Affiliation(s)
- Michael F Denny
- Division of Rheumatology, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI 48109, USA
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Kobayashi SD. Role of neutrophils in innate immunity: a systems biology-level approach. WILEY INTERDISCIPLINARY REVIEWS. SYSTEMS BIOLOGY AND MEDICINE 2009; 1:309-333. [PMID: 20836000 PMCID: PMC3501127 DOI: 10.1002/wsbm.32] [Citation(s) in RCA: 170] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The innate immune system is the first line of host defense against invading microorganisms. Polymorphonuclear leukocytes (PMNs or neutrophils) are the most abundant leukocyte in humans and essential to the innate immune response against invading pathogens. Compared with the acquired immune response, which requires time to develop and is dependent on previous interaction with specific microbes, the ability of neutrophils to kill microorganisms is immediate, non-specific, and not dependent on previous exposure to microorganisms. Historically, studies on PMN-pathogen interaction focused on the events leading to killing of microorganisms, such as recruitment/chemotaxis, transmigration, phagocytosis, and activation, whereas post-phagocytosis sequelae were infrequently considered. In addition, it was widely accepted that human neutrophils possessed limited capacity for new gene transcription and thus, relatively little biosynthetic capacity. This notion has changed dramatically within the past decade. Further, there is now more effort directed to understand the events occurring in PMNs after killing of microbes. Herein we review the systems biology-level approaches that have been used to gain an enhanced view of the role of neutrophils during host-pathogen interaction. We anticipate that these and future systems-level studies will ultimately provide information critical to our understanding, treatment, and control of diseases caused by pathogenic microorganisms.
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Affiliation(s)
- Scott D. Kobayashi
- Laboratory of Human Bacterial Pathogenesis, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, National Institutes of Health
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