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Gelbenegger G, Buchtele N, Schoergenhofer C, Grafeneder J, Schwameis M, Schellongowski P, Denk W, Jilma B. Disseminated Intravascular Coagulation in Anaphylaxis. Semin Thromb Hemost 2024; 50:569-579. [PMID: 38029783 DOI: 10.1055/s-0043-1776878] [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: 12/01/2023]
Abstract
Anaphylaxis is a life-threatening condition that involves severe cutaneous, respiratory, and cardiovascular symptoms. Disseminated intravascular coagulation (DIC) is an acquired, widespread activation of coagulation that can be caused by infectious conditions (e.g., sepsis) and noninfectious conditions. The onset of DIC following anaphylaxis is not commonly known, and information regarding the pathomechanism linking anaphylaxis to DIC is scarce. Further, demographic and clinical data in anaphylaxis-induced DIC are still missing to this day. Triggered by a case of anaphylaxis-induced DIC that seamlessly transitioned to lethal sepsis-induced DIC, we aimed to characterize the patient population affected by anaphylaxis-induced DIC by performing a review of existing literature and expand the discussion to underlying mechanisms. The overall mortality of the patient cohort (n = 30) identified by the literature review was 50%. All patients that died either suffered a bleeding event or a thrombotic event. The majority of patients (n = 25/30; 83%) had bleeding events; thrombotic events were only reported in nonsurvivors (n = 9/15 or 60% of nonsurvivors; vs. n = 0/15 in survivors; p < 0.001). Nonsurvivors of anaphylaxis-induced DIC were on average 25 years older than survivors (p = 0.068). In conclusion, DIC can complicate anaphylaxis and is expected to contribute to poor microvascular perfusion after anaphylaxis. Particularly, elderly patients with known cardiovascular disease and patients who develop thrombotic events are susceptible to lethal outcomes. As a rare and largely uncharacterized disease entity, further research is needed to investigate the link between DIC and anaphylaxis and to potentially identify better treatment strategies.
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Affiliation(s)
- Georg Gelbenegger
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Nina Buchtele
- Department of Medicine I, Intensive Care Unit 13i2, Medical University of Vienna, Vienna, Austria
| | | | - Jürgen Grafeneder
- Department of Emergency Medicine, Medical University of Vienna, Vienna, Austria
| | - Michael Schwameis
- Department of Emergency Medicine, Medical University of Vienna, Vienna, Austria
| | - Peter Schellongowski
- Department of Medicine I, Intensive Care Unit 13i2, Medical University of Vienna, Vienna, Austria
| | - Wolfgang Denk
- Austrian Society of Forensic Medicine, Vienna, Austria
| | - Bernd Jilma
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
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2
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Fukushima N, Kamachi K, Sato T, Ishii K, Tomimasu R, Miyahara M. Anaphylaxis and Severe Disseminated Intravascular Coagulation Due to Remdesivir. Intern Med 2024; 63:873-876. [PMID: 38220191 PMCID: PMC11008986 DOI: 10.2169/internalmedicine.2994-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Accepted: 11/23/2023] [Indexed: 01/16/2024] Open
Abstract
A 69-year-old woman suffering with multiple myeloma developed coronavirus disease 2019 (COVID-19). Shortly after administration of remdesivir, she presented with symptoms of facial flushing, wheezing, and hypoxemia. Subsequently, thrombocytopenia and hypofibrinogenemia rapidly manifested, leading to a diagnosis of enhanced fibrinolytic-type disseminated intravascular coagulopathy (DIC). This clinical presentation was considered an immediate hypersensitivity reaction with associated coagulation abnormalities induced by remdesivir. Although remdesivir is generally considered safe and efficacious in the treatment of COVID-19, physicians should remain vigilant regarding the potential for severe adverse events associated with this medication.
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Affiliation(s)
| | | | - Tomonori Sato
- Internal Medicine, Karatsu Red Cross Hospital, Japan
| | - Keitaro Ishii
- Internal Medicine, Karatsu Red Cross Hospital, Japan
| | - Rika Tomimasu
- Internal Medicine, Karatsu Red Cross Hospital, Japan
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Smith MR, Wurlod VA, Liu CC. Evaluation of hemostatic derangements associated with canine anaphylaxis and the relationship to syndrome severity. J Vet Emerg Crit Care (San Antonio) 2023; 33:648-655. [PMID: 37962436 DOI: 10.1111/vec.13345] [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: 03/03/2022] [Revised: 07/06/2022] [Accepted: 08/31/2022] [Indexed: 11/15/2023]
Abstract
OBJECTIVE To describe hemostatic derangements associated with canine anaphylaxis and to assess for association with syndrome severity. DESIGN Prospective observational study. SETTING University teaching hospital. ANIMALS Twenty-seven client-owned dogs, recruited from November 2018 to January 2022, diagnosed with anaphylaxis of varying severity were included. Study inclusion required presentation <6 hours after initiation of clinical signs, no medications or history of illness within the prior 2 weeks, lack of comorbidities expected to affect hemostasis, and lack of a disease state that could alternatively explain the clinical presentation. INTERVENTIONS Blood samples were collected within the first hour of presentation for CBC, serum biochemistry, prothrombin time (PT), activated partial thromboplastin time (aPTT), and viscoelastic coagulation testing for use with a cartridge-based point-of-care device. MEASUREMENTS AND MAIN RESULTS Clotting time and clot formation time were prolonged, alpha angle and maximum clot firmness were decreased, PT and aPTT were prolonged, and platelet counts were lower in severe cases compared to mild and moderate cases. There were no differences for any parameter between mild and moderate cases. The presence or absence of abdominal effusion was not associated with hemostatic status. CONCLUSIONS Global hemostatic derangements consistent with hypocoagulability are a prominent feature of severe anaphylaxis in dogs and should be considered for routine evaluation.
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Affiliation(s)
- M Ryan Smith
- Department of Veterinary Clinical Sciences, Louisiana State University School of Veterinary Medicine, Baton Rouge, Louisiana, USA
| | - Virginie A Wurlod
- Department of Veterinary Clinical Sciences, Louisiana State University School of Veterinary Medicine, Baton Rouge, Louisiana, USA
| | - Chin-Chi Liu
- Department of Veterinary Clinical Sciences, Louisiana State University School of Veterinary Medicine, Baton Rouge, Louisiana, USA
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Chalise SN, Palmer E, Pathak V. Fatal Allergic Reaction to Gadolinium Contrast. Cureus 2023; 15:e42455. [PMID: 37637616 PMCID: PMC10449612 DOI: 10.7759/cureus.42455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/24/2023] [Indexed: 08/29/2023] Open
Abstract
Gadolinium-based contrast agents (GBCA) have been used to enhance the sensitivity and specificity of disease diagnoses. They have excellent safety profiles. However, rare adverse events may happen. We present a case of severe fatal allergic reaction to GBCA in a 35-year-old patient.
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Affiliation(s)
- Som N Chalise
- Pulmonary and Critical Care, Riverside Health System, Newport News, USA
| | - Elizabeth Palmer
- Pulmonary and Critical Care, Riverside Health System, Newport News, USA
| | - Vikas Pathak
- Pulmonary and Critical Care, Riverside Health System, Yorktown, USA
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Carter MC, Park J, Vadas P, Worm M. Extrinsic and Intrinsic Modulators of Anaphylaxis. THE JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY. IN PRACTICE 2023; 11:1998-2006. [PMID: 37230384 DOI: 10.1016/j.jaip.2023.05.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 05/09/2023] [Accepted: 05/10/2023] [Indexed: 05/27/2023]
Abstract
The severity of anaphylaxis is determined by many factors. The allergenic source as well as the age of the affected individual and the route of allergen exposure encompass the major contributors of the clinical outcome. Moreover, the severity can be modulated further by intrinsic and extrinsic factors. Among these, the genetic predisposition, certain comorbidities such as uncontrolled asthma, and hormonal fluctuations have been proposed as intrinsic and antihypertensive medications or physical activity as extrinsic factors. Recent advances have highlighted immunologic pathways that may exacerbate the response to allergens through receptors on mast cells, basophils, platelets, and other granulocytes. Atopy, platelet-activating factor acetylhydrolase deficiency, hereditary alpha tryptasemia, and clonal mast cell disorders are examples associated with genetic alterations that may predispose to severe anaphylaxis. Identifying risk factors that lower the threshold of reactivity or increase the severity of multisystem reactions is important in the management of this patient population.
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Affiliation(s)
- Melody C Carter
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md.
| | - Jane Park
- Division of Clinical Immunology and Allergy, Department of Medicine, St. Michael's Hospital, Toronto, Ontario, Canada
| | - Peter Vadas
- Division of Clinical Immunology and Allergy, Department of Medicine, St. Michael's Hospital, Toronto, Ontario, Canada
| | - Margitta Worm
- Division of Allergy and Immunology, Department of Dermatology, Venerology and Allergy, Charité Universitätsmedizin Berlin, Berlin, Germany
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Turner K, Boyd C, Rossi G, Sharp CR, Claus MA, Francis A, Smart L. Allergy, inflammation, hepatopathy and coagulation biomarkers in dogs with suspected anaphylaxis due to insect envenomation. Front Vet Sci 2022; 9:875339. [PMID: 36003410 PMCID: PMC9393546 DOI: 10.3389/fvets.2022.875339] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 07/18/2022] [Indexed: 11/13/2022] Open
Abstract
Objectives To compare concentrations of biomarkers of; allergy [mast cell tryptase (MCT) and histamine], inflammation [interleukin (IL)-6,-10, and-18, CXCL8, CCL2, keratinocyte chemoattractant (KC), C-reactive protein (CRP)], endothelial glycocalyx shedding (hyaluronan), coagulation [prothrombin time, activated partial thromboplastin time, fibrinogen concentration, and von Willebrand Factor antigen, protein C (PC) and antithrombin (AT) activity], and hepatopathy [alanine transaminase (ALT), aspartate transaminase (AST), alkaline phosphatase (ALP), and total bilirubin] between dogs with anaphylaxis after suspected insect exposure, dogs with critical illness, and healthy dogs. Design This was a single center prospective clinical observational comparative biomarker study that included 25 dogs with anaphylaxis (evidence of insect exposure, acute dermatological signs, and other organ involvement), 30 dogs with other critical illness, and 20 healthy dogs. Differences across groups in biomarker concentrations were tested using one-way ANOVA or Kruskal-Wallis test, with significant P values (<0.05) reported for pairwise differences detected by post-hoc tests. Logistic regression models were used to calculate the area under the receiver operator characteristic curve (AUROC) for discrimination between anaphylaxis and non-anaphylactic illness. Results Histamine concentration was significantly higher in the anaphylaxis group than the healthy (P < 0.001) and critically ill groups (P < 0.001), whereas no differences in MCT were detected amongst groups. Biomarker concentrations that were increased relative to healthy dogs in both the anaphylaxis and critically ill groups included IL-10 (P < 0.001 and P = 0.007, respectively), CCL2 (P = 0.007 and P < 0.001, respectively) and AST (both P < 0.001), whereas only the critically ill group had significantly increased CRP (P < 0.001), IL-6 (P < 0.001), KC (P < 0.001), ALP (P < 0.001), and fibrinogen (P = 0.016) concentrations, compared to the healthy group. Only dogs with anaphylaxis had significantly higher hyaluronan (P = 0.021) and ALT (P = 0.021) concentrations, and lower PC (P = 0.030) and AT (P = 0.032) activities, compared to healthy dogs. Both CRP and histamine concentration showed good discrimination between anaphylaxis and other critical illness, with an AUROC of 0.96 (95% CI 0.91-1) and 0.81 (95% CI 0.69-0.93), respectively. Conclusions This preliminary study in dogs with anaphylaxis after suspected insect exposure, found evidence of an early innate immune response, glycocalyx shedding and anticoagulant consumption. Both CRP and histamine showed potential clinical utility for differentiation between anaphylaxis and other critical illness.
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Affiliation(s)
- Kate Turner
- Emergency and Critical Care Department, School of Veterinary Medicine, Murdoch University, Perth, WA, Australia
| | - Corrin Boyd
- Emergency and Critical Care Department, School of Veterinary Medicine, Murdoch University, Perth, WA, Australia
| | - Gabriele Rossi
- Veterinary Pathology Department, School of Veterinary Medicine, Murdoch University, Perth, WA, Australia
| | - Claire R. Sharp
- Emergency and Critical Care Department, School of Veterinary Medicine, Murdoch University, Perth, WA, Australia
- Harry Butler Institute, Murdoch University, Perth, WA, Australia
| | - Melissa A. Claus
- Emergency and Critical Care Department, School of Veterinary Medicine, Murdoch University, Perth, WA, Australia
| | - Abbie Francis
- Telethon Kids Cancer Centre, Telethon Kids Institute, Nedlands, WA, Australia
- Discipline of Pediatrics, Medical School, The University of Western Australia, Nedlands, WA, Australia
| | - Lisa Smart
- Emergency and Critical Care Department, School of Veterinary Medicine, Murdoch University, Perth, WA, Australia
- Emergency and Critical Care Department, Small Animal Specialist Hospital, North Ryde, NSW, Australia
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Turner K, Boyd C, Stander N, Smart L. Clinical characteristics of two-hundred thirty-two dogs (2006-2018) treated for suspected anaphylaxis in Perth, Western Australia. Aust Vet J 2021; 99:505-512. [PMID: 34541658 DOI: 10.1111/avj.13114] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 05/28/2021] [Accepted: 08/04/2021] [Indexed: 11/28/2022]
Abstract
OBJECTIVE To describe the clinical features of dogs treated for suspected anaphylaxis in Perth, Western Australia. DESIGN Single-centre observational case series with retrospective and prospective phases. METHODS This was a two-phase study of dogs with clinical suspicion of anaphylaxis presenting to the emergency service of a university teaching hospital. Dogs required evidence of, and appropriate treatment of, a type 1 hypersensitivity reaction as well as two or more organs affected (or cardiovascular signs alone) to be included. Phase 1 includes retrospective case series of 186 dogs (March 2006-December 2018). Phase 2 includes prospective descriptive case series of 46 dogs (October 2017-July 2018) focused on clinical signs. RESULTS In phase 1, 88 (47%) dogs had evidence of insect exposure prior to the acute event. One hundred forty (75%) dogs had dermatological signs, 141 (76%) had gastrointestinal signs and 129 (69%) had cardiovascular signs. Ninety-two (49%) dogs had vasoconstrictive shock (5 with bradycardia), 24 (13%) had vasodilatory shock, 8 (4%) had mixed vasodilatory and vasoconstrictive shock and 5 (3%) had unclassifiable shock. On focused abdominal ultrasound, 42 of 71 (59%) dogs had gallbladder wall oedema and 3 of 71 (4%) dogs had peritoneal free fluid. In phase 2, the distributions of insect exposure, organ dysfunction and sonographic abnormalities were similar to phase 1. CONCLUSION Dogs presenting with suspected anaphylaxis showed a broad range of presentations. Dermatological signs were absent in a proportion of dogs, vasoconstrictive shock was more frequent than vasodilatory and unique features of shock were identified. This study highlights the challenges of diagnosis based on presenting features alone.
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Affiliation(s)
- K Turner
- College of Science, Health, Engineering and Education, Murdoch University, Perth, Western Australia, Australia
| | - C Boyd
- College of Science, Health, Engineering and Education, Murdoch University, Perth, Western Australia, Australia
| | - N Stander
- Vet Imaging Specialists, The Animal Hospital at Murdoch University, Perth, Western Australia, Australia
| | - L Smart
- College of Science, Health, Engineering and Education, Murdoch University, Perth, Western Australia, Australia
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Nguyen SMT, Rupprecht CP, Haque A, Pattanaik D, Yusin J, Krishnaswamy G. Mechanisms Governing Anaphylaxis: Inflammatory Cells, Mediators, Endothelial Gap Junctions and Beyond. Int J Mol Sci 2021; 22:ijms22157785. [PMID: 34360549 PMCID: PMC8346007 DOI: 10.3390/ijms22157785] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 07/12/2021] [Accepted: 07/13/2021] [Indexed: 12/12/2022] Open
Abstract
Anaphylaxis is a severe, acute, life-threatening multisystem allergic reaction resulting from the release of a plethora of mediators from mast cells culminating in serious respiratory, cardiovascular and mucocutaneous manifestations that can be fatal. Medications, foods, latex, exercise, hormones (progesterone), and clonal mast cell disorders may be responsible. More recently, novel syndromes such as delayed reactions to red meat and hereditary alpha tryptasemia have been described. Anaphylaxis manifests as sudden onset urticaria, pruritus, flushing, erythema, angioedema (lips, tongue, airways, periphery), myocardial dysfunction (hypovolemia, distributive or mixed shock and arrhythmias), rhinitis, wheezing and stridor. Vomiting, diarrhea, scrotal edema, uterine cramps, vaginal bleeding, urinary incontinence, dizziness, seizures, confusion, and syncope may occur. The traditional (or classical) pathway is mediated via T cells, Th2 cytokines (such as IL-4 and 5), B cell production of IgE and subsequent crosslinking of the high affinity IgE receptor (FcεRI) on mast cells and basophils by IgE-antigen complexes, culminating in mast cell and basophil degranulation. Degranulation results in the release of preformed mediators (histamine, heparin, tryptase, chymase, carboxypeptidase, cathepsin G and tumor necrosis factor alpha (TNF-α), and of de novo synthesized ones such as lipid mediators (cysteinyl leukotrienes), platelet activating factor (PAF), cytokines and growth factors such as vascular endothelial growth factor (VEGF). Of these, histamine, tryptase, cathepsin G, TNF-α, LTC4, PAF and VEGF can increase vascular permeability. Recent data suggest that mast cell-derived histamine and PAF can activate nitric oxide production from endothelium and set into motion a signaling cascade that leads to dilatation of blood vessels and dysfunction of the endothelial barrier. The latter, characterized by the opening of adherens junctions, leads to increased capillary permeability and fluid extravasation. These changes contribute to airway edema, hypovolemia, and distributive shock, with potentially fatal consequences. In this review, besides mechanisms (endotypes) underlying IgE-mediated anaphylaxis, we also provide a brief overview of IgG-, complement-, contact system-, cytokine- and mast cell-mediated reactions that can result in phenotypes resembling IgE-mediated anaphylaxis. Such classifications can lead the way to precision medicine approaches to the management of this complex disease.
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Affiliation(s)
| | | | - Aaisha Haque
- The Bill Hefner VA Medical Center, Salisbury, NC 27106, USA;
| | - Debendra Pattanaik
- Division of Allergy and Immunology, UT Memphis College of Medicine, Memphis, TN 38103, USA;
| | - Joseph Yusin
- The Division of Allergy and Immunology, Greater Los Angeles VA Medical Center, Los Angeles, CA 90011, USA;
| | - Guha Krishnaswamy
- Department of Medicine, Wake Forest School of Medicine, Winston-Salem, NC 27106, USA;
- The Bill Hefner VA Medical Center, Salisbury, NC 27106, USA;
- Correspondence:
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9
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Summers AM, Culler C, Cooper E. Spontaneous abdominal effusion in dogs with presumed anaphylaxis. J Vet Emerg Crit Care (San Antonio) 2021; 31:483-489. [PMID: 33913584 DOI: 10.1111/vec.13070] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 09/20/2019] [Accepted: 10/02/2019] [Indexed: 11/27/2022]
Abstract
OBJECTIVE To describe patient characteristics of dogs developing spontaneous abdominal effusion in association with anaphylaxis. DESIGN Retrospective study between 2010 and 2018. SETTING University teaching hospital and referral specialty private practice emergency departments. ANIMALS Sixteen dogs presenting to the emergency department for clinical signs suggestive of anaphylaxis with peritoneal effusion documented via ultrasonography. INTERVENTIONS None. MEASUREMENTS AND MAIN RESULTS Dogs presented with clinical signs of anaphylaxis including vomiting 12 of 16 (75%), diarrhea 9 of 16 (56%), and collapse 7 of 16 (44%). Physical examination findings included altered mentation 14 of 16 (88%), erythema 2 of 16 (13%), and urticaria 2 of 16 (13%). Historically, 3 of 16 (19%) had just recently been vaccinated, 1 of 16 (6%) had known contact with an insect, and 8 of 16 (50%) had been outdoors prior to the onset of clinical signs, whereas 5 of 16 (31%) had no known triggering event. At presentation, median systolic arterial pressure was 70 mm Hg (range, 30-210 mm Hg). Venous blood gas revealed an acidemia with a mean pH of 7.24 ± 0.09, a base deficit of 7.15 ± 7.7 mmol/L, and an increased plasma lactate with a mean of 7.35 ± 2.09 mmol/L. Bloodwork abnormalities included an increased alanine aminotransferase activity with a mean of 439.2 ± 404.5 U/L and an increased gamma-glutamyl transferase activity with a mean concentration of 7.29 ± 4.1 U/L. Twelve patients (75%) had gallbladder wall abnormalities on ultrasonography. Eight patients (50%) had abdominocentesis performed. The median PCV of the effusion was 0.29 L/L (29%; range, 4-41) and total plasma protein was 38 g/L (3.8 g/dL; range, 2.4-6.5). Two dogs (12.5%) were euthanized. The remaining 14 dogs (87.5%) survived to discharge, with a mean hospitalization time of 23.7 ± 16.7 hours. CONCLUSIONS Abdominal effusion should be considered a potential sequela of anaphylaxis in dogs. Therefore, serial monitoring for presence or development of spontaneous abdominal effusion should be considered.
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Affiliation(s)
- April M Summers
- Cornell University Hospital for Animals, Cornell University, Ithaca, New York, USA
| | - Christine Culler
- Veterinary Specialty Hospital of the Carolinas, Cary, North Carolina, USA
| | - Edward Cooper
- College of Veterinary Medicine, The Ohio State University, Columbus, Ohio, USA
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Nezu K, Yoshioka T, Katayama H, Fukushi T, Kyan A. Spontaneous iliopsoas muscle hematoma secondary to disseminated intravascular coagulation caused by nafamostat mesilate allergy: a case study. RENAL REPLACEMENT THERAPY 2019. [DOI: 10.1186/s41100-019-0207-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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11
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Beutier H, Hechler B, Godon O, Wang Y, Gillis CM, de Chaisemartin L, Gouel-Chéron A, Magnenat S, Macdonald LE, Murphy AJ, Chollet-Martin S, Longrois D, Gachet C, Bruhns P, Jönsson F. Platelets expressing IgG receptor FcγRIIA/CD32A determine the severity of experimental anaphylaxis. Sci Immunol 2019; 3:3/22/eaan5997. [PMID: 29654057 DOI: 10.1126/sciimmunol.aan5997] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2017] [Revised: 12/04/2017] [Accepted: 02/16/2018] [Indexed: 12/14/2022]
Abstract
Platelets are key regulators of vascular integrity; however, their role in anaphylaxis, a life-threatening systemic allergic reaction characterized by the loss of vascular integrity and vascular leakage, remains unknown. Anaphylaxis is a consequence of inappropriate cellular responses triggered by antibodies to generally harmless antigens, resulting in a massive mediator release and rapidly occurring organ dysfunction. Human platelets express receptors for immunoglobulin G (IgG) antibodies and can release potent mediators, yet their contribution to anaphylaxis has not been previously addressed in mouse models, probably because mice do not express IgG receptors on platelets. We investigated the contribution of platelets to IgG-dependent anaphylaxis in human IgG receptor-expressing mouse models and a cohort of patients suffering from drug-induced anaphylaxis. Platelet counts dropped immediately and markedly upon anaphylaxis induction only when they expressed the human IgG receptor FcγRIIA/CD32A. Platelet depletion attenuated anaphylaxis, whereas thrombocythemia substantially worsened its severity. FcγRIIA-expressing platelets were directly activated by IgG immune complexes in vivo and were sufficient to restore susceptibility to anaphylaxis in resistant mice. Serotonin released by activated platelets contributed to anaphylaxis severity. Data from a cohort of patients suffering from drug-induced anaphylaxis indicated that platelet activation was associated with anaphylaxis severity and was accompanied by a reduction in circulating platelet numbers. Our findings identify platelets as critical players in IgG-dependent anaphylaxis and provide a rationale for the design of platelet-targeting strategies to attenuate the severity of anaphylactic reactions.
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Affiliation(s)
- Héloïse Beutier
- Institut Pasteur, Department of Immunology, Unit of Antibodies in Therapy and Pathology, Paris, France.,INSERM U1222, Paris, France.,Université Pierre et Marie Curie, Paris, France
| | - Béatrice Hechler
- Université de Strasbourg, INSERM, Etablissement Français du Sang (EFS) Grand Est, Biologie et Pharmacologie des plaquettes sanguines (BPPS) UMR_S1255, Fédération de Médecine Translationnelle de Strasbourg (FMTS), F-67000 Strasbourg, France
| | - Ophélie Godon
- Institut Pasteur, Department of Immunology, Unit of Antibodies in Therapy and Pathology, Paris, France.,INSERM U1222, Paris, France
| | - Yu Wang
- Institut Pasteur, Department of Immunology, Unit of Antibodies in Therapy and Pathology, Paris, France.,INSERM U1222, Paris, France.,Université Diderot Paris VII, Paris, France
| | - Caitlin M Gillis
- Institut Pasteur, Department of Immunology, Unit of Antibodies in Therapy and Pathology, Paris, France.,INSERM U1222, Paris, France.,Université Pierre et Marie Curie, Paris, France
| | - Luc de Chaisemartin
- Unité Fonctionnelle Auto-immunité et Hypersensibilités, Hôpital Bichat, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France.,UMR996-Inflammation, Chemokines et Immunopathology, INSERM, Université Paris-Sud, Université Paris-Saclay, Châtenay-Malabry, France
| | - Aurélie Gouel-Chéron
- Institut Pasteur, Department of Immunology, Unit of Antibodies in Therapy and Pathology, Paris, France.,INSERM U1222, Paris, France.,Département d'Anesthésie-Réanimation, Hôpital Bichat, AP-HP, Paris, France
| | - Stéphanie Magnenat
- Université de Strasbourg, INSERM, Etablissement Français du Sang (EFS) Grand Est, Biologie et Pharmacologie des plaquettes sanguines (BPPS) UMR_S1255, Fédération de Médecine Translationnelle de Strasbourg (FMTS), F-67000 Strasbourg, France
| | | | | | | | - Sylvie Chollet-Martin
- Unité Fonctionnelle Auto-immunité et Hypersensibilités, Hôpital Bichat, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France.,UMR996-Inflammation, Chemokines et Immunopathology, INSERM, Université Paris-Sud, Université Paris-Saclay, Châtenay-Malabry, France
| | - Dan Longrois
- Département d'Anesthésie-Réanimation, Hôpital Bichat, AP-HP, Paris, France.,INSERM UMR1152, Université Paris Diderot Paris 7, Paris, France
| | - Christian Gachet
- Université de Strasbourg, INSERM, Etablissement Français du Sang (EFS) Grand Est, Biologie et Pharmacologie des plaquettes sanguines (BPPS) UMR_S1255, Fédération de Médecine Translationnelle de Strasbourg (FMTS), F-67000 Strasbourg, France
| | - Pierre Bruhns
- Institut Pasteur, Department of Immunology, Unit of Antibodies in Therapy and Pathology, Paris, France. .,INSERM U1222, Paris, France
| | - Friederike Jönsson
- Institut Pasteur, Department of Immunology, Unit of Antibodies in Therapy and Pathology, Paris, France. .,INSERM U1222, Paris, France
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12
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Guilarte M, Sala-Cunill A, Luengo O, Labrador-Horrillo M, Cardona V. The Mast Cell, Contact, and Coagulation System Connection in Anaphylaxis. Front Immunol 2017; 8:846. [PMID: 28798744 PMCID: PMC5526842 DOI: 10.3389/fimmu.2017.00846] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Accepted: 07/05/2017] [Indexed: 11/13/2022] Open
Abstract
Anaphylaxis is the most severe form of allergic reaction, resulting from the effect of mediators and chemotactic substances released by activated cells. Mast cells and basophils are considered key players in IgE-mediated human anaphylaxis. Beyond IgE-mediated activation of mast cells/basophils, further mechanisms are involved in the occurrence of anaphylaxis. New insights into the potential relevance of pathways other than mast cell and basophil degranulation have been unraveled, such as the activation of the contact and the coagulation systems. Mast cell heparin released upon activation provides negatively charged surfaces for factor XII (FXII) binding and auto-activation. Activated FXII, the initiating serine protease in both the contact and the intrinsic coagulation system, activates factor XI and prekallikrein, respectively. FXII-mediated bradykinin (BK) formation has been proven in the human plasma of anaphylactic patients as well as in experimental models of anaphylaxis. Moreover, the severity of anaphylaxis is correlated with the increase in plasma heparin, BK formation and the intensity of contact system activation. FXII also activates plasminogen in the fibrinolysis system. Mast cell tryptase has been shown to participate in fibrinolysis through plasmin activation and by facilitating the degradation of fibrinogen. Some usual clinical manifestations in anaphylaxis, such as angioedema or hypotension, or other less common, such as metrorrhagia, may be explained by the direct effect of the activation of the coagulation and contact system driven by mast cell mediators.
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Affiliation(s)
- Mar Guilarte
- Allergy Section, Internal Medicine Department, Hospital Universitari Vall d'Hebron, Barcelona, Spain.,VHIR Institut de Recerca Vall d'Hebron, Barcelona, Spain
| | - Anna Sala-Cunill
- Allergy Section, Internal Medicine Department, Hospital Universitari Vall d'Hebron, Barcelona, Spain.,VHIR Institut de Recerca Vall d'Hebron, Barcelona, Spain
| | - Olga Luengo
- Allergy Section, Internal Medicine Department, Hospital Universitari Vall d'Hebron, Barcelona, Spain.,VHIR Institut de Recerca Vall d'Hebron, Barcelona, Spain
| | - Moisés Labrador-Horrillo
- Allergy Section, Internal Medicine Department, Hospital Universitari Vall d'Hebron, Barcelona, Spain.,VHIR Institut de Recerca Vall d'Hebron, Barcelona, Spain
| | - Victoria Cardona
- Allergy Section, Internal Medicine Department, Hospital Universitari Vall d'Hebron, Barcelona, Spain.,VHIR Institut de Recerca Vall d'Hebron, Barcelona, Spain
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Krishnamurthy D, Starkl P, Szalai K, Roth-Walter F, Diesner SC, Mittlboeck M, Mannhalter C, Untersmayr E, Jensen-Jarolim E. Monitoring neutrophils and platelets during casein-induced anaphylaxis in an experimental BALB/c mouse model. Clin Exp Allergy 2012; 42:1119-28. [PMID: 22702510 DOI: 10.1111/j.1365-2222.2012.04012.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
BACKGROUND With respect to the cellular players, mast cells and basophils have been well studied in experimental murine systemic anaphylaxis models, but the role of neutrophils and platelets is not fully understood today. OBJECTIVE We tested the hypothesis that neutrophils and platelets might participate in an antigen-induced anaphylaxis model. METHODS BALB/c mice were sensitized intraperitoneally with alum-adsorbed casein. A period of 2 weeks later, mice were challenged with 100 μg casein intravenously and immediate hypersensitivity reactions were assessed by rectal temperature measurements and monitoring the physical activity. Subsequently, leucocytes were counted in the peripheral blood as well as quantified in situ in typical shock organs like lung, liver and spleen, heart and kidney. RESULTS Mice sensitized with casein showed casein-specific IgG1, IgE, and IgG2a. When sensitized mice were specifically challenged with casein they developed immediate hypersensitivity reactions including drop of temperature and reduced activity. Furthermore, pronounced peripheral neutropenia and reduced platelet counts correlated with the severity of the hypersensitivity reactions. In the histological analyses of collected tissues we observed lung interstitial neutrophilia using Gr-1 staining. These events occurred specifically in mice sensitized and challenged with casein, in contrast to control groups. CONCLUSIONS On the basis of our data we suggest that in addition to mast cells and basophils, neutrophils and platelets participate in the anaphylactic response in this BALB/c mouse model. Platelet and neutrophils expressing relevant immunoglobulin receptors may therefore have a synergistic effect with allergen specific IgE as well as IgG antibodies in food-induced anaphylaxis. We suggest that management of these cells could be of clinical importance to handle anaphylaxis.
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Affiliation(s)
- D Krishnamurthy
- Division of Comparative Immunology and Oncology, Department of Pathophysiology and Allergy Research, Center of Pathophysiology, Infectiology and Immunology, Vienna, Austria
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Borahay MA, Harirah HM, Olson G, Kilic GS, Karipcin S, Hankins GDV. Disseminated Intravascular Coagulation, Hemoperitoneum, and Reversible Ischemic Neurological Deficit Complicating Anaphylaxis to Prophylactic Antibiotics during Cesarean Delivery: A Case Report and Review of Literature. AJP Rep 2011; 1:15-20. [PMID: 23705078 PMCID: PMC3653544 DOI: 10.1055/s-0030-1271219] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2010] [Accepted: 11/03/2010] [Indexed: 11/09/2022] Open
Abstract
Routine use of prophylactic antibiotics reduces the risk of postcesarean fever and infections by over 50% in both nonelective and elective (scheduled) procedures. Although anaphylaxis to prophylactic antibiotics is rare, potentially fatal complications might occur. Herein, we present a case where disseminated intravascular coagulation and reversible ischemic neurological deficit complicated anaphylactic reactions to prophylactic antibiotics administered during cesarean delivery. A 27-year-old gravida 9, para 7 at 39(2)/7 weeks underwent elective repeat cesarean delivery and bilateral tubal ligation. Her surgery was complicated by intraoperative hypotension, generalized itching, and urticarial skin rash consistent with anaphylactic reaction upon administering prophylactic cefazolin. In the recovery room, she continued to be hemodynamically unstable despite energetic resuscitation. Hemoperitoneum was suspected, and laboratory evaluation indicated disseminated intravascular coagulation. Abdominal exploration revealed massive hemoperitoneum, but there was no source of active bleeding noted. The postoperative course was complicated by reversible ischemic neurological deficit, which resolved on expectant management. Disseminated intravascular coagulation and reversible ischemic neurological deficit may complicate anaphylactic reaction to prophylactic antibiotics administered during cesarean delivery. Immediate recognition and intervention is crucial for a successful outcome.
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Affiliation(s)
- Mostafa A Borahay
- Department of Obstetrics and Gynecology, The University of Texas Medical Branch, Galveston, Texas
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Abstract
Anaphylaxis is a clinical emergency, and recent reports suggest increased prevalence. A diverse set of primary genetic and environmental influences may confer susceptibility to anaphylactic reactions. Anaphylaxis presents diagnostic and therapeutic challenges. It often manifests with a broad array of symptoms and signs that might be similar to other diseases. The management of anaphylaxis consists of emergency treatment of acute episodes as well as preventive strategies to avoid recurrences. Treatment is complicated by its rapid onset and progression, presence of concurrent diseases or medications, and need for long-term allergen avoidance. Health care professionals must be able to recognize the signs of anaphylaxis, treat an episode promptly and appropriately, and provide preventive recommendations. Recognizing the gaps in our understanding and management of anaphylaxis may help identify promising targets for future treatment and prevention and areas that require further study.
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Affiliation(s)
- M Ben-Shoshan
- Division of Pediatric Allergy and Clinical Immunology, Department of Pediatrics, McGill University Health Center, Montreal, QC, Canada.
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Triggiani M, Patella V, Staiano RI, Granata F, Marone G. Allergy and the cardiovascular system. Clin Exp Immunol 2008; 153 Suppl 1:7-11. [PMID: 18721322 DOI: 10.1111/j.1365-2249.2008.03714.x] [Citation(s) in RCA: 104] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
The most dangerous and life-threatening manifestation of allergic diseases is anaphylaxis, a condition in which the cardiovascular system is responsible for the majority of clinical symptoms and for potentially fatal outcome. The heart is both a source and a target of chemical mediators released during allergic reactions. Mast cells are abundant in the human heart, where they are located predominantly around the adventitia of large coronary arteries and in close contact with the small intramural vessels. Cardiac mast cells can be activated by a variety of stimuli including allergens, complement factors, general anesthetics and muscle relaxants. Mediators released from immunologically activated human heart mast cells strongly influence ventricular function, cardiac rhythm and coronary artery tone. Histamine, cysteinyl leukotrienes and platelet-activating factor (PAF) exert negative inotropic effects and induce myocardial depression that contribute significantly to the pathogenesis of anaphylactic shock. Moreover, cardiac mast cells release chymase and renin that activates the angiotensin system locally, which further induces arteriolar vasoconstriction. The number and density of cardiac mast cells is increased in patients with ischaemic heart disease and dilated cardiomyopathies. This observation may help explain why these conditions are major risk factors for fatal anaphylaxis. A better understanding of the mechanisms involved in cardiac mast cell activation may lead to an improvement in prevention and treatment of systemic anaphylaxis.
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Affiliation(s)
- M Triggiani
- Division of Clinical Immunology and Allergy, University of Naples Federico II, Naples, Italy.
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Park SG, Lee DY, Seo SK, Lee SW, Kim SK, Jung WK, Kang MS, Choi YH, Yea SS, Choi I, Choi IW. Evaluation of anti-allergic properties of caffeic acid phenethyl ester in a murine model of systemic anaphylaxis. Toxicol Appl Pharmacol 2007; 226:22-9. [PMID: 17884125 DOI: 10.1016/j.taap.2007.08.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2007] [Revised: 08/09/2007] [Accepted: 08/09/2007] [Indexed: 11/30/2022]
Abstract
Caffeic acid phenethyl ester (CAPE) is an active component of honeybee propolis extracts. It has several positive effects, including anti-inflammatory, anti-oxidation, anti-cancer, anti-bacterial, anti-viral, anti-fungal, and immunomodulatory effects. In particular, the suppressive effect of NF-kappaB may disrupt a component of allergic induction. The principal objective of this experimental study was to evaluate the effects of CAPE on the active systemic anaphylaxis induced by ovalbumin (OVA) challenge in mice. Mice were intraperitoneally sensitized and intravenously challenged with OVA. Histopathological analysis, nuclear factor (NF)-kappaB activation, and the plasma levels of histamine and total IgE after allergen challenge were evaluated. After challenges, all of the sham-treated mice developed anaphylactic symptoms, increased plasma levels of histamine and OVA-specific IgE, marked vascular leakage, NF-kappaB activation, platelet-activating factor (PAF) production, and histological changes including pulmonary edema and hemorrhage in the renal medullae within 20 min. By way of contrast, a reduction in the plasma levels of histamine and OVA-specific IgE and an inhibition of NF-kappaB activation and PAF release were observed in the CAPE-treated mice. In addition, a significant prevention of hemoconcentration and OVA-induced pathological changes were noted. These results indicate that CAPE demonstrates an anti-allergic effect, which may be the result of its protective effects against IgE-mediated allergy.
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Affiliation(s)
- Sae-Gwang Park
- Department of Microbiology, College of Medicine and Center for Viral Disease Research, Inje University, Busan 614-735, South Korea
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Abstract
Mortality of severe sepsis remains at 40% to 50%. Intensive efforts over the past two decades have only marginally improved outcome. Improving outcome in sepsis depends on understanding its pathophysiology, which involves triggers, responses of the organism, and dysfunction. Stress, injury, or infection trigger host responses, including local and systemic orchestrated mechanisms. Dysfunction and outcome depend on both trigger and response. Blood coagulation, inflammation, immunity, and fibrinolysis are critical components of the organism's responses. Understanding their role in sepsis pathophysiology is the key to effective treatment. Relevant studies were identified by a systematic literature search, complemented by manual search of individual citations. Using PubMed, 'sepsis' yields more than 62,000 references, 'plasminogen activators' more than 21,000. The selection of citations was guided by preference for reviews that expand important threads of argumentation. Single original studies were included when relevant to critical points. This analytical review describes the essential elements of pathophysiology and the current status of sepsis treatment. Based on this context, an emerging therapeutic option will be discussed: plasminogen activators.
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Affiliation(s)
- Ch Pechlaner
- Division of General Internal Medicine, Department of Internal Medicine, University of Innsbruck, Anichstrasse 35, A-6020 Innsbruck.
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Choi JH, Chung WJ, Han SJ, Lee HB, Choi IW, Lee HK, Jang KY, Lee DG, Han SS, Park KH, IM SY. Selective involvement of reactive oxygen intermediates in platelet-activating factor-mediated activation of NF-kappaB. Inflammation 2000; 24:385-98. [PMID: 10921504 DOI: 10.1023/a:1007068010645] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Although it has been suggested that some biological activities of platelet-activating factor (PAF) are mediated by, at least in part, reactive oxygen intermediates (ROI), the precise mechanisms underlying the interaction between the two remains to be elucidated. Antioxidants, such as alpha-tocopherol acid succinate, N-acetyl-L-Cysteine, pyrrolidinedithiocarbamate failed to inhibit PAF-induced immediate systemic reactions such as lethality, symptoms of disseminated intravascular coagulation, and histological changes such as pulmonary edema and hemorrhage in renal medullae 10 min following PAF injection. In contrast. antioxidants significantly inhibited both the in vivo and in vitro PAF-induced NF-kappaB activation and NF-kappaB-dependent TNF-alpha expression. The effects of the antioxidants were due to their inhibition of PAF-induced degradation of IkappaBalpha, a protein responsible for keeping NF-kappaB in an inactive form. A protein tyrosine kinase and N-tosyl-L-phenylalanine chloromethyl ketone sensitive serine protease were involved in both PAF- and H2O2-induced NF-kappaB activation. Collectively, these data indicate that the PAF-induced NF-kappaB activation is selectively mediated through the generation of ROI.
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Affiliation(s)
- J H Choi
- Department of Biological Science, College of Natural Sciences, Chonnam National University, Kwangju, Republic of Korea
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Han SJ, Choi JH, Ko HM, Yang HW, Choi IW, Lee HK, Lee OH, Im SY. Glucocorticoids prevent NF-kappaB activation by inhibiting the early release of platelet-activating factor in response to lipopolysaccharide. Eur J Immunol 1999; 29:1334-41. [PMID: 10229101 DOI: 10.1002/(sici)1521-4141(199904)29:04<1334::aid-immu1334>3.0.co;2-0] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Lipopolysaccharide (LPS) is a known inducer of numerous pro-inflammatory events including the production of platelet-activating factor (PAF). PAF released in response to LPS is a major contributor to the pathological events associated with endotoxemia. The present study demonstrates that dexmethasone (DEX) inhibited the LPS-induced early plasma PAF raise in a dose- and time-dependent manner. In addition, DEX prevented the subsequent PAF-mediated pathological phenomena such as anaphylactic shock-like symptoms, symptoms of disseminated intravascular coagulation and hemorrhage in renal medullae. DEX or the PAF antagonist BN 50739 significantly inhibited LPS-induced NF-kappaB activation. The inhibition of NF-kappaB activation by DEX was overcome by the injection of exogenous PAF. Administration of PAF or LPS resulted in a rapid loss of IkappaBalpha protein. The LPS-induced degradation of IkappaBalpha was prevented by pretreatment with BN 50739, suggesting that PAF is a critical intermediate in the LPS-triggered degradation of IkappaBalpha protein. DEX prevented the LPS-induced IkappaBalpha degradation, which was also reversed by exogenous PAF. Administration of DEX or BN 50739 caused an increase in cytoplasmic IkappaBalpha level. Our results indicate that DEX inhibits IkappaBalpha degradation and subsequent NF-kappaB activation through blocking the initial release of PAF.
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Affiliation(s)
- S J Han
- Department of Microbiology, College of Natural Sciences, Chonnam National University, HRC, Kwangju, Republic of Korea
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Choi IH, Shin YM, Park JS, Lee MS, Han EH, Chai OH, Im SY, Ha TY, Lee HK. Immunoglobulin E-dependent active fatal anaphylaxis in mast cell-deficient mice. J Exp Med 1998; 188:1587-92. [PMID: 9802970 PMCID: PMC2212520 DOI: 10.1084/jem.188.9.1587] [Citation(s) in RCA: 45] [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] [Indexed: 11/04/2022] Open
Abstract
Mast cells have long been believed to be the central effector cells in the development of immunoglobulin (Ig)E-dependent anaphylaxis. In this study, we investigated the role of mast cells in IgE-dependent hapten-induced active fatal anaphylaxis using mast cell-deficient WBB6F1- W/Wv (W/Wv) and congenic normal (+/+) mice. Although a 5-min delay in shock signs and death were observed in W/Wv mice, 100% fatal reactions to penicillin V (Pen V) occurred in both +/+ and W/Wv mice. Administration of monoclonal anti-IL-4 antibody completely prevented the fatal reactions, and the effect of anti-IL-4 was associated with its suppressive activity on Pen V-specific serum levels of IgE, but not IgG. The platelet-activating factor (PAF) antagonist, BN 50739, completely prevented the fatal reactions in both strains of mice. Our kinetic study revealed, in contrast to no elevation of plasma histamine level in W/Wv mice, high levels of PAF in the circulation after challenge in both +/+ and W/Wv mice, albeit to a lesser degree in the latter case. These data indicate that cells other than mast cells are sufficient to induce an IgE-dependent active fatal anaphylaxis by elaborating PAF, which is the critical mediator for fatal murine anaphylaxis.
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Affiliation(s)
- I H Choi
- Department of Immunology and Institute for Medical Science, Chonbuk National University Medical School, Chonju, Chonbuk, 561-182, Republic of Korea
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Im SY, Han SJ, Ko HM, Choi JH, Chun SB, Lee DG, Ha TY, Lee HK. Involvement of nuclear factor-kappa B in platelet-activating factor-mediated tumor necrosis factor-alpha expression. Eur J Immunol 1997; 27:2800-4. [PMID: 9394802 DOI: 10.1002/eji.1830271109] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Tumor necrosis factor (TNF)-alpha and platelet-activating factor (PAF) are important mediators of inflammatory reactions, and their release is controlled by a positive feedback network. However, the regulatory mechanisms underlying the interaction of these two molecules are unknown. Within 10 min of the injection of lipopolysaccharide (LPS) into C57BL/6 mice, effects inducible by PAF such as anaphylactic shock-like symptoms, disseminated intravascular coagulation, and hemorrhage in renal medullae were observed, and all these pathological changes were prevented by the PAF antagonist, BN 50739. The plasma level of PAF after LPS injection reached a peak at 5 min. TNF-alpha gene expression was evident 20 min after LPS injection and was maximal at 40 min, and the level of serum TNF-alpha reached a peak at 1 h. Pretreatment with BN 50739 inhibited LPS-induced TNF-alpha gene expression and protein synthesis in a dose-dependent manner. Injection of PAF or treatment of the macrophage cell line, J774A.1, with PAF activated the transcription factor, nuclear factor (NF)-kappa B, which is essential for inducible TNF-alpha transcription. The activation of NF-kappa B by PAF preceded the LPS-mediated TNF-alpha gene expression. Pretreatment with BN 50739 inhibited LPS-induced mobilization of NF-kappa B in a dose-dependent manner in vivo as well as in vitro. These data suggest that PAF, which is released immediately or shortly after LPS injection, induces the expression of TNF-alpha through the activation of NF-kappa B.
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Affiliation(s)
- S Y Im
- Department of Microbiology, College of Natural Sciences, Chonnam National University, Kwangju, Republic of Korea
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Im SY, Choi JH, Ko HM, Han SJ, Chun SB, Lee HK, Ha TY. A protective role of platelet-activating factor in murine candidiasis. Infect Immun 1997; 65:1321-6. [PMID: 9119469 PMCID: PMC175135 DOI: 10.1128/iai.65.4.1321-1326.1997] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Platelet-activating factor (PAF) is a potent phospholipid-derived modulator of immunological and inflammatory processes. In this study, the role of exogenous and endogenous PAF in resistance to infection with Candida albicans was investigated. Administration of PAF following a lethal challenge of C. albicans significantly protected mice from death and reduced the number of organisms in the kidneys. Neutralization of endogenous PAF with the PAF antagonist BN50739 shortened the mean survival time and increased the number of C. albicans cells per kidney. Shortly after infection of mice (30 min), significant levels of PAF were detected in the serum. PAF-induced protection appears to be mediated through the actions of tumor necrosis factor alpha (TNF-alpha), since pretreatment with anti-TNF-alpha before each injection of PAF abrogated the majority of PAF-induced enhanced resistance. Administration of PAF in vivo elevated serum TNF-alpha levels and TNF-alpha mRNA expression in the kidney. Production of TNF-alpha was markedly diminished by pretreatment with the PAF antagonist BN50739 prior to infection with C. albicans. We conclude that PAF, which is produced during infection with C. albicans, plays an important role in determining the level of resistance to this infectious microorganism. This effect of PAF appears to be mediated, at least in part, through the induction of TNF-alpha.
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Affiliation(s)
- S Y Im
- Department of Microbiology, College of Natural Sciences, Chonnam National University, Kwangju, Republic of Korea
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