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Dastoorpoor M, Khodadadi N, Khanjani N, Borsi SH. Physiological Equivalent Temperature (PET) index and cardiovascular hospital admissions in Ahvaz, southwest of Iran. ARCHIVES OF ENVIRONMENTAL & OCCUPATIONAL HEALTH 2021; 77:653-661. [PMID: 34665079 DOI: 10.1080/19338244.2021.1990830] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Evidence shows that climate change may have adverse effects on human health. The purpose of this study was to investigate the relation between Physiologically Equivalent Temperature (PET) and cardiovascular hospital admissions in Ahvaz. Distributed Lag Non-linear Models (DLNM) combined with quasi-Poisson regression models were used to investigate the effect of PET on hospital admissions. Low PET values (6.4 °C, 9.9 °C and 16.9 °C) in all lags, except lag 0-30, significantly decreased the risk of hospital admissions for total cardiovascular diseases, hypertension, ischemic heart diseases, and cardiovascular admissions in men, women and ≤65 years. But, low PET (6.4 °C) in lags 0 and 0-2 significantly increased the risk of hospital admissions for cerebrovascular diseases; and high PET values increased the risk of ischemic heart diseases and in men. Both cold and hot stress are involved in cardiovascular hospital admissions.
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Affiliation(s)
- Maryam Dastoorpoor
- Department of Biostatistics and Epidemiology, Air Pollution and Respiratory Diseases Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Narges Khodadadi
- Department of Biostatistics and Epidemiology, Air Pollution and Respiratory Diseases Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Narges Khanjani
- Environmental Health Engineering Research Center, Kerman University of Medical Sciences, Kerman, Iran
| | - Seyed Hamid Borsi
- Department of Internal Medicine, Air Pollution and Respiratory Diseases Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
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2
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Teuben M, Heeres M, Blokhuis T, Hollman A, Vrisekoop N, Tan E, Pfeifer R, Pape HC, Koenderman L, Leenen LPH. Instant intra-operative neutropenia despite the emergence of banded (CD16 dim/CD62L bright) neutrophils in peripheral blood - An observational study during extensive trauma-surgery in pigs. Injury 2021; 52:426-433. [PMID: 33208273 DOI: 10.1016/j.injury.2020.11.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 11/04/2020] [Accepted: 11/05/2020] [Indexed: 02/02/2023]
Abstract
INTRODUCTION Deregulation of polymorphonuclear neutrophils (PMNs) is an essential step in the development of inflammatory complications upon trauma. Different neutrophil subtypes have been identified recently, however, the role of neutrophil subtypes in immunoregulation upon trauma is unclear. We hypothesize that extensive trauma surgery causes instant progressive heterogeneity of the blood neutrophil pool, and increased appearance of young (CD16dim/CD62Lbright) neutrophils in peripheral blood. MATERIAL AND METHODS A standardized extensive thoraco-abdominal porcine trauma surgery model was utilized, and 12 animals were included. Blood was collected at defined timepoints and neutrophil numbers and subtypes were studied by flowcytometry. Neutrophil subtypes were identified by differences in cell surface expression levels of CD16 (FcγRIII) and CD62L (L-selectin). Porcine neutrophil subtypes were further characterized after flow sorting. RESULTS Eleven animals survived the 3-hour surgical protocol. Neutrophil numbers dropped significantly from a mean of 8,6 ± 3,5 × 106 to 2,4 ± 1,8 × 106 cells/ml during 180 min, (p<0.001). Simultaneously, the blood PMN population became increasingly heterogeneous due to the appearance of new neutrophil subtypes. Cell sorting experiments and cytological analysis revealed that these porcine subtypes had specific morphological characteristics, mimicking their human counterparts. At baseline, 88% ± 1 percent of circulatory PMNs comprised of mature (CD16bright/CD62Lbright) PMNs, while at 3 h the blood PMN pool consisted of 59% ± 2 percent of mature subtypes (p<0.001). Despite a marked drop in neutrophil levels during surgery, absolute and relative numbers of banded (CD16dim/CD62Lbright) neutrophils continued to rise throughout surgery. CONCLUSION Standardized extensive trauma surgery was associated with instant progressive neutropenia and increased heterogeneity of the blood neutrophil pool. Furthermore, three different neutrophil subsets in peripheral porcine blood were identified over the course of surgery. Further studies should clarify their precise role in the development of early organ failure upon extensive trauma surgery. This for the first time exemplifies experimentally the time constraints and impact of damage control surgery after severe trauma.
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Affiliation(s)
- Michel Teuben
- University Medical Centre Utrecht, Department of Trauma, Heidelberglaan 100, 3584 Utrecht, the Netherlands; University Medical Centre Utrecht, Laboratory for Translational Research, Utrecht, the Netherlands; University Medical Center Zurich intoUniversity Hospital Zurich..
| | - Marjolein Heeres
- University Medical Centre Utrecht, Department of Trauma, Heidelberglaan 100, 3584 Utrecht, the Netherlands; University Medical Centre Utrecht, Laboratory for Translational Research, Utrecht, the Netherlands
| | - Taco Blokhuis
- Maastricht University Medical Centre, Department of Surgery, Maastricht, the Netherlands
| | - Arne Hollman
- University Medical Centre Utrecht, Department of Trauma, Heidelberglaan 100, 3584 Utrecht, the Netherlands; University Medical Centre Utrecht, Laboratory for Translational Research, Utrecht, the Netherlands
| | - Nienke Vrisekoop
- University Medical Centre Utrecht, Laboratory for Translational Research, Utrecht, the Netherlands
| | - Edward Tan
- Radboud University Medical Center, Department of Surgery, Nijmegen, the Netherlands
| | - Roman Pfeifer
- University Medical Center Zurich intoUniversity Hospital Zurich
| | | | - Leo Koenderman
- University Medical Centre Utrecht, Laboratory for Translational Research, Utrecht, the Netherlands
| | - Luke P H Leenen
- University Medical Centre Utrecht, Department of Trauma, Heidelberglaan 100, 3584 Utrecht, the Netherlands.
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Nabil-Adam A, Shreadah MA. Anti-inflammatory, Antioxidant, Lung and Liver Protective Activity of Galaxaura oblongata as Antagonistic Efficacy against LPS using Hematological Parameters and Immunohistochemistry as Biomarkers. Cardiovasc Hematol Agents Med Chem 2021; 20:148-165. [PMID: 33438570 DOI: 10.2174/1871525719666210112154800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 10/28/2020] [Accepted: 11/16/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND This study aimed to investigate the potential bioactivity and the ameliorative role of Galaxaura oblongata (G. oblongata) against LPS-induced toxicity by using hematological parameters. OBJECTIVE It is aimed also to examine its protective effect using the immunohistochemistry of liver and lungs as biomarkers in male BALB/C albino mice. MATERIALS AND METHODS The current study carried out using different in-vitro and in-vivo assays such as phytochemical, antioxidants, anti-inflammatory for in-vitro where the hematological and immunohistochemistry for lung and liver were investigated in vivo. RESULTS There are no previous studies were performed to investigate the in vivo and in vitro effects of the G. oblongata extracts as antioxidant and anti-inflammatory due to their rareness compared to other red algae. LPS treated mice revealed a significant decrease in total number of WBCs, RBCs, platelets, and HGB%, MPV, MCV and MCHC compared to the control group. On contrast, the HCT and MCHC were increased in the induction group which was treated with LPS compared to the control group. Furthermore, the immunohistochemistry results of the present study revealed the protective effect of G. oblongata compared to the induction group. G. oblongata can be used as protective marine natural products against the toxicity induced by LPS. CONCLUSION It exhibited a significant ameliorative role against the alterations in the hematological parameters and immunohistochemistry of liver and lungs, and helps to reduce as well as coordinate the acute inflammations caused by TNF.
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Affiliation(s)
- Asmaa Nabil-Adam
- Marine Biotechnology and Natural Products Lab (MBNP), National Institute of Oceanography & Fisheries (NIOF), Alexandria. Egypt
| | - Mohamed A Shreadah
- Marine Biotechnology and Natural Products Lab (MBNP), National Institute of Oceanography & Fisheries (NIOF), Alexandria. Egypt
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Damnjanović Z, Jovanović M, Šarac M, Stepanović N, Lazarević M, Milić D. Correlation between climatic and biochemical parameters in etiopathogenesis of unprovoked deep vein thrombosis of the lower limbs. Phlebology 2020; 36:407-413. [PMID: 33251939 DOI: 10.1177/0268355520974138] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AIM Beside the intention of early detection and optimal treatment of deep venous thrombosis (DVT), the aim of this study was to investigate the influence of chronobiological rhythms on the etiopathogenesis of unprovoked deep vein thrombosis of the lower limbs with monitoring of seasonal variations in biochemical parameters. PATIENTS AND METHODOLOGY The prospective clinical trial included all consecutive hospitalized patients and outpatients diagnosed with DVT at the Vascular Surgery Clinic of the Clinical Center in Niš, starting from January 2013 to December 2014. RESULTS There was no statistically significant difference in correlation between the distribution of the incidence of DVT of the lower limbs (p = 0.582), sex (p = 0.350), age (p = 0.385) and localization (p = 0.886) and the seasons. Creatinine levels were significantly higher in patients who developed DVT in spring than in those who developed DVT in winter (p < 0.05), while LDL cholesterol levels were significantly higher in patients diagnosed with DVT in winter than in those diagnosed with DVT in autumn (p < 0.05). CONCLUSION According to the results of the study, it can be concluded that in the territory of South Serbia, the seasons are not significantly related to the incidence, sex, age and localization of unprovoked DVT of the lower limbs. Creatinine levels were significantly higher in patients who developed DVT in spring than in those who developed DVT in winter, while LDL cholesterol levels were significantly higher in patients during winter than during autumn.
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Affiliation(s)
| | | | - Momir Šarac
- 112404Military Medical Academy Beograd, Beograd, Serbia
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van den Bossche WBL, Rykov K, Teodosio C, Ten Have BLEF, Knobben BAS, Sietsma MS, Josiassen K, de Bruin-Versteeg S, Orfao A, van Dongen JJM, van Raay JJAM. Flow cytometric assessment of leukocyte kinetics for the monitoring of tissue damage. Clin Immunol 2018; 197:224-230. [PMID: 30290225 DOI: 10.1016/j.clim.2018.09.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 09/19/2018] [Accepted: 09/30/2018] [Indexed: 01/13/2023]
Abstract
Leukocyte populations quickly respond to tissue damage, but most leukocyte kinetic studies are not based on multiparameter flow cytometry. We systematically investigated several blood leukocyte populations after controlled tissue damage. 48 patients were assigned to either an anterior or posterolateral total hip arthroplasty. Peripheral blood was collected pre-operatively and at 2 h, 24 h, 48 h, 2 and 6 weeks postoperatively and assessed by flow cytometry for absolute counts of multiple leukocyte populations using standardized EuroFlow protocols. Absolute counts of leukocyte subsets differed significantly between consecutive time points. Neutrophils increased instantly after surgery, while most leukocyte subsets initially decreased, followed by increasing cell counts until 48 h. At two weeks all leukocyte counts were restored to pre-operative counts. Immune cell kinetics upon acute tissue damage exhibit reproducible patterns, which differ between the leukocyte subsets and with "opposite kinetics" among monocyte subsets. Flow cytometric leukocyte monitoring can be used to minimally invasively monitor tissue damage.
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Affiliation(s)
- Wouter B L van den Bossche
- Department of Immunology, Erasmus MC, University Medical Center Rotterdam, Postbus 2040, 3000, CA, Rotterdam, the Netherlands; Department of Neurosurgery, Brain Tumor center, Erasmus MC, University Medical Center Rotterdam, Postbus 2040, 3000, CA, Rotterdam, the Netherlands
| | - Kyrill Rykov
- Department of Orthopedic Surgery, Martini Hospital Groningen, Van Swietenplein 1, 9728, NT, Groningen, the Netherlands
| | - Cristina Teodosio
- Department of Immunology, Erasmus MC, University Medical Center Rotterdam, Postbus 2040, 3000, CA, Rotterdam, the Netherlands; Department of Immunohematology and Blood Transfusion, Leiden University Medical Center, Postbus 9600, 2300, RC, Leiden, the Netherlands
| | - Bas L E F Ten Have
- Department of Orthopedic Surgery, Martini Hospital Groningen, Van Swietenplein 1, 9728, NT, Groningen, the Netherlands
| | - Bas A S Knobben
- Department of Orthopedic Surgery, Martini Hospital Groningen, Van Swietenplein 1, 9728, NT, Groningen, the Netherlands
| | - Maurits S Sietsma
- Department of Orthopedic Surgery, Martini Hospital Groningen, Van Swietenplein 1, 9728, NT, Groningen, the Netherlands
| | - Karin Josiassen
- Department of Immunology, Erasmus MC, University Medical Center Rotterdam, Postbus 2040, 3000, CA, Rotterdam, the Netherlands
| | - Sandra de Bruin-Versteeg
- Department of Immunology, Erasmus MC, University Medical Center Rotterdam, Postbus 2040, 3000, CA, Rotterdam, the Netherlands; Department of Immunohematology and Blood Transfusion, Leiden University Medical Center, Postbus 9600, 2300, RC, Leiden, the Netherlands
| | - Alberto Orfao
- Centro de Investigación del Cáncer (CIC, IBMCC USAL-CSIC), Servicio General de Citometría (NUCLEUS), ciberone and Instituto de Investigación Biomédica de Salamanca (IBSAL), Universidad de Salamanca, Campus Miguel de Unamuno, 37007 Salamanca, Spain
| | - Jacques J M van Dongen
- Department of Immunology, Erasmus MC, University Medical Center Rotterdam, Postbus 2040, 3000, CA, Rotterdam, the Netherlands; Department of Immunohematology and Blood Transfusion, Leiden University Medical Center, Postbus 9600, 2300, RC, Leiden, the Netherlands.
| | - Jos J A M van Raay
- Department of Orthopedic Surgery, Martini Hospital Groningen, Van Swietenplein 1, 9728, NT, Groningen, the Netherlands
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Keerthy HK, Mohan CD, Siveen KS, Fuchs JE, Rangappa S, Sundaram MS, Li F, Girish KS, Sethi G, Basappa, Bender A, Rangappa KS. Novel synthetic biscoumarins target tumor necrosis factor-α in hepatocellular carcinoma in vitro and in vivo. J Biol Chem 2014; 289:31879-31890. [PMID: 25231984 DOI: 10.1074/jbc.m114.593855] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
TNF is a pleotropic cytokine known to be involved in the progression of several pro-inflammatory disorders. Many therapeutic agents have been designed to counteract the effect of TNF in rheumatoid arthritis as well as a number of cancers. In the present study we have synthesized and evaluated the anti-cancer activity of novel biscoumarins in vitro and in vivo. Among new compounds, BIHC was found to be the most cytotoxic agent against the HepG2 cell line while exhibiting less toxicity toward normal hepatocytes. Furthermore, BIHC inhibited the proliferation of various hepatocellular carcinoma (HCC) cells in a dose- and time-dependent manner. Subsequently, using in silico target prediction, BIHC was predicted as a TNF blocker. Experimental validation was able to confirm this hypothesis, where BIHC could significantly inhibit the recombinant mouse TNF-α binding to its antibody with an IC50 of 16.5 μM. Furthermore, in silico docking suggested a binding mode of BIHC similar to a ligand known to disrupt the native, trimeric structure of TNF, and also validated with molecular dynamics simulations. Moreover, we have demonstrated the down-regulation of p65 phosphorylation and other NF-κB-regulated gene products upon BIHC treatment, and on the phenotypic level the compound shows inhibition of CXCL12-induced invasion of HepG2 cells. Also, we demonstrate that BIHC inhibits infiltration of macrophages to the peritoneal cavity and suppresses the activity of TNF-α in vivo in mice primed with thioglycollate broth and lipopolysaccharide. We comprehensively validated the TNF-α inhibitory efficacy of BIHC in an inflammatory bowel disease mice model.
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Affiliation(s)
- Hosadurga Kumar Keerthy
- Laboratory of Chemical Biology, Department of Chemistry, Bangalore University, Palace Road, Bangalore 560 001, India
| | | | - Kodappully Sivaraman Siveen
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117 597
| | - Julian E Fuchs
- Unilever Centre for Molecular Science Informatics, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Shobith Rangappa
- Interdisciplinary Research Group of Infectious Diseases, Singapore-MIT Alliance for Research and Technology Centre (SMART), Singapore 138 602, and
| | - Mahalingam S Sundaram
- Department of Studies in Biochemistry, University of Mysore, Manasagangotri, Mysore 570 006, India
| | - Feng Li
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117 597
| | - Kesturu S Girish
- Department of Studies in Biochemistry, University of Mysore, Manasagangotri, Mysore 570 006, India
| | - Gautam Sethi
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117 597,; Cancer Science Institute of Singapore, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117 599
| | - Basappa
- Laboratory of Chemical Biology, Department of Chemistry, Bangalore University, Palace Road, Bangalore 560 001, India,.
| | - Andreas Bender
- Unilever Centre for Molecular Science Informatics, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom,.
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Kamisoglu K, Sleight K, Nguyen TT, Calvano SE, Coyle SM, Corbett SA, Androulakis IP. Effects of coupled dose and rhythm manipulation of plasma cortisol levels on leukocyte transcriptional response to endotoxin challenge in humans. Innate Immun 2013; 20:774-84. [PMID: 24217219 DOI: 10.1177/1753425913508458] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Severe traumas are associated with hypercortisolemia due to both disruption of cortisol secretion rhythm and increase in its total concentration. Understanding the effects of altered cortisol levels and rhythms on immune function is of great clinical interest, to prevent conditions such as sepsis from complicating the recovery. This in vivo study assesses the responses of circulating leukocytes to coupled dose and rhythm manipulation of cortisol, preceding an immune challenge induced by endotoxin administration. Through continuous infusion, plasma cortisol concentration was increased to and kept constant at a level associated with major physiologic stress. In response, transcriptional programming of leukocytes was altered to display a priming response before endotoxin exposure. Enhanced expression of a number of receptors and signaling proteins, as well as lowered protein translation and mitochondrial function indicated a sensitization against potential infectious threats. Despite these changes, response to endotoxin followed very similar patterns in both cortisol and saline pre-treated groups except one cluster including probe sets associated with major players regulating inflammatory response. In sum, altered dose and rhythm of plasma cortisol levels engendered priming of circulating leukocytes when preceded an immune challenge. This transcriptional program change associated with stimulated surveillance function and suppressed energy-intensive processes, emphasized permissive actions of cortisol on immune function.
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Affiliation(s)
- Kubra Kamisoglu
- Department of Chemical and Biochemical Engineering, Rutgers, The State University of New Jersey, Piscataway, NJ, USA
| | - Kirsten Sleight
- Department of Biomedical Engineering, Rutgers, The State University of New Jersey, Piscataway, NJ, USA
| | - Tung T Nguyen
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA, USA
| | - Steve E Calvano
- Department of Surgery, Rutgers, Robert Wood Johnson Medical School, Clinical Academic Building, New Brunswick, NJ, USA
| | - Susette M Coyle
- Department of Surgery, Rutgers, Robert Wood Johnson Medical School, Clinical Academic Building, New Brunswick, NJ, USA
| | - Siobhan A Corbett
- Department of Surgery, Rutgers, Robert Wood Johnson Medical School, Clinical Academic Building, New Brunswick, NJ, USA
| | - Ioannis P Androulakis
- Department of Chemical and Biochemical Engineering, Rutgers, The State University of New Jersey, Piscataway, NJ, USA Department of Biomedical Engineering, Rutgers, The State University of New Jersey, Piscataway, NJ, USA Department of Surgery, Rutgers, Robert Wood Johnson Medical School, Clinical Academic Building, New Brunswick, NJ, USA
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8
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Damnjanović Z, Jovanović M, Stojanović M. Correlation between the climatic factors and the pathogenesis of deep vein thrombosis. Hippokratia 2013; 17:203-206. [PMID: 24470728 PMCID: PMC3872454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
There are numerous researches dealing with the correlation between the seasons and climatic factors and the pathogenesis of deep vein thrombosis (DVT). The presented researches show an undoubted correlation between the climatic factors and the pathogenesis of DVT. In the majority of researches, retrospection is noted as a disadvantage. Further prospective researches could aim on testing the correlation between both climatic and thrombotics factors and the pathogenesis of DVT. This may additionally clarify the pathophysiological mechanism of the DVT incidence and contribute to the prevention and treatment of risk groups of patients in certain periods of the year.
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Affiliation(s)
| | - M Jovanović
- Vascular Surgery Department, Clinical Centre of Niš ; Medical Faculty of Niš, Niš, Serbia
| | - M Stojanović
- Medical Faculty of Niš, Niš, Serbia ; General Surgery Department, Clinical Centre of Niš, Niš, Serbia
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Fish oil-supplemented parenteral nutrition prolongs survival while beneficially altering phospholipids' Fatty Acid composition and modulating immune function in rat sepsis. Shock 2012; 36:184-90. [PMID: 21522042 DOI: 10.1097/shk.0b013e31821e4f8b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
We investigated the therapeutic effects of parenteral fish oil (FO) on survival and fatty acid profile in plasma and erythrocyte membranes, T-lymphocyte subsets, and plasma cytokines in a rat model of sepsis. Adult male Sprague-Dawley rats were subjected to cecal ligation and puncture-induced sepsis. For recovery, central venous catheterization was performed 2 days before sepsis was induced. Rats were randomly assigned to receive normal saline (n = 20) or total parenteral nutrition (PN) containing a standard soybean oil emulsion (n = 20) or FO-supplemented TPN (n = 20) at the onset of sepsis for 5 days. In the control group, rats were challenged by sham operation and underwent appropriate control treatment (n = 10). Sepsis led to a high mortality and body weight loss compared with sham operation. Total PN supplemented with FO, but not without FO, improved the survival compared with normal saline. Furthermore, parenteral infusion of FO increased the concentrations of eicosapentaenoic acid and docosahexaenoic acid, as well as the ratio of (eicosapentaenoic acid + docosahexaenoic acid) to arachidonic acid both in plasma and erythrocyte membrane. In addition, FO-supplemented TPN improved the percentages of CD3 and CD3CD4 T cells, as well as the CD4/CD8 ratio in spleen. Meanwhile, the percentage of regulatory T cells (CD4CD25Foxp3) among CD4 T cells was reduced by FO-supplemented TPN. Fish oil-supplemented TPN attenuated the production of high-mobility group box 1 and IL-10 in plasma. Moreover, parenteral FO decreased the bacterial loads in peritoneal lavage, blood, lung, and spleen. The present study suggests that FO-supplemented TPN initiated at the onset of sepsis improves survival, beneficially alters the lipids profile in plasma and erythrocyte membrane, modulates immune function, and regulates inflammatory response in a rat model.
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Flatland B, Fry MM, LeBlanc CJ, Rohrbach BW. Leukocyte and platelet changes following low-dose lipopolysaccharide administration in five dogs. Res Vet Sci 2010; 90:89-94. [PMID: 20965082 DOI: 10.1016/j.rvsc.2010.05.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2009] [Revised: 01/07/2010] [Accepted: 05/13/2010] [Indexed: 10/19/2022]
Abstract
Effects of low-dose LPS (0.1 μg/kg i.v.) on leukocyte and platelet parameters measured using an Advia 120 hematology analyzer were investigated. Five dogs received a saline sham treatment prior to LPS, and blood was collected before and 3, 6, and 24 h post-treatment. LPS-treated dogs had mild neutrophil toxic change and increased neutrophil bands at 3 and 6 h. Compared to saline-treated controls, total leukocyte, neutrophil, and monocyte counts of LPS-treated dogs were significantly decreased at 3 h and increased at 24 h. Compared to baseline, total leukocyte counts of LPS-treated dogs were significantly decreased at 3 h and increased at 24 h. Mean platelet volume was significantly increased and mean platelet component concentration was decreased at 3 h compared to baseline. Platelet count was significantly decreased at 3 and 6 h; plateletcrit did not change significantly. High dosage is not required in order to detect LPS-mediated hematologic effects in dogs. Low-dose LPS administration causes significant changes in leukocyte and platelet indices in dogs without causing severe clinical signs or death.
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Affiliation(s)
- B Flatland
- Department of Pathobiology, College of Veterinary Medicine, University of Tennessee, Knoxville, TN 379996, United States.
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Abstract
A few limited examples of large animal models are outlined, with the main emphasis on baboon models. The baboon offers all the advantages of a large animal and is comparable with humans in nearly all physiological and immunological aspects. In addition, cross-reactivity with human therapeutic and diagnostic reagents allows testing of new species-specific therapies such as antihuman antibodies, on the one hand, and monitoring with available human analytical procedures, on the other.
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Affiliation(s)
- Heinz Redl
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, A-1200 Vienna, Austria.
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12
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Lemaire LCJM, van Lanschot JJB, Stoutenbeek CP, van Deventer SJH, Wells CL, Gouma DJ. Bacterial translocation in multiple organ failure: Cause or epiphenomenon still unproven. Br J Surg 2005. [DOI: 10.1111/j.1365-2168.1997.00520.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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13
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Efron PA, Tinsley K, Minnich DJ, Monterroso V, Wagner J, Lainée P, Lorré K, Swanson PE, Hotchkiss R, Moldawer LL. Increased lymphoid tissue apoptosis in baboons with bacteremic shock. Shock 2005; 21:566-71. [PMID: 15167687 DOI: 10.1097/01.shk.0000126648.58732.8c] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The molecular mechanisms of immune cell apoptosis during sepsis remain unclear. Two young adult baboons (Papio sp.) received a lethal dose of live Escherichia coli and were sacrificed at either 16 (for animal welfare concerns) or 24 h post-septic shock. An additional baboon, which received no bacteria, served as a control. Necropsy was performed immediately with subsequent immunohistochemical staining of lymphoid tissue. Immunohistologic analysis of tissues from the septic baboons revealed marked systemic lymphocyte apoptosis occurring in all lymphoid tissues examined. Focally, pyknotic and karyorrhectic lymphocytes demonstrated activation of a mitochondrial-dependent cell death pathway (active caspase 9 and apoptosis-inducing factor). Other regions demonstrated apoptotic lymphocytes with activation of a death receptor-dependent cell pathway (Fas ligand). Thus, we have demonstrated for the first time in primates that overwhelming gram-negative bacteremia produces an early and profound lymphocyte death that occurs through multiple cell death pathways. Bacteremic shock in the baboon may be an appropriate model for studying experimental therapies aimed at blocking lymphocyte apoptosis because their response appears comparable to humans dying from sepsis.
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Affiliation(s)
- Philip A Efron
- Department of Surgery, University of Florida College of Medicine, Gainesville, Florida 32610, USA
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14
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Wyllie DH, Bowler ICJW, Peto TEA. Relation between lymphopenia and bacteraemia in UK adults with medical emergencies. J Clin Pathol 2004; 57:950-5. [PMID: 15333656 PMCID: PMC1770434 DOI: 10.1136/jcp.2004.017335] [Citation(s) in RCA: 94] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/19/2004] [Indexed: 11/04/2022]
Abstract
AIMS To determine the relevance of lymphopenia to the diagnosis of bacteraemia in patients admitted with medical emergencies, relative to peripheral blood white cell count and neutrophilia. PATIENTS/METHODS A two year cohort study carried out in a teaching hospital in Oxford, UK of 21,495 consecutive adult emergency admissions to general medical or infectious disease wards. Full blood data were available in 21,372 cases; 41 cases with extreme full blood count results (neutrophil count, > 75 x 10(9)/litre; lymphocyte count, > 10 x 10(9)/litre) were excluded, leaving 21,331 cases for analysis. The association between the admission lymphocyte and neutrophil counts and the risk of bacteraemia was assessed. RESULTS Neutrophilia and lymphopenia were both associated with bacteraemia. Lymphopenia was the better predictor in this cohort. Both neutrophilia and lymphopenia were more predictive of bacteraemia than the total white blood cell count. CONCLUSIONS Both lymphocyte and neutrophil counts, rather than total white blood cell count, should be considered in adult medical admissions with suspected bacteraemia.
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Affiliation(s)
- D H Wyllie
- Nuffield Departments of Medicine, University of Oxford, John Radcliffe Hospital, Oxford OX3 9DU, UK.
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Gehad AE, Lillehoj HS, Hendricks GL, Mashaly MM. Initiation of humoral immunity. II. The effects of T-independent and T-dependent antigens on the distribution of lymphocyte populations. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2002; 26:761-771. [PMID: 12206839 DOI: 10.1016/s0145-305x(02)00021-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The effect of injecting T-independent (lipopolysaccharide, LPS) and T-dependent (bovine serum albumin, BSA) antigens on the redistribution of lymphocyte populations in immature male chickens was investigated. In the blood, percentages of total T-cells (CD3+), T-helper cells (CD4+), and T-cytotoxic/suppressor cells (CD8+) significantly decreased post-LPS injection (PLI) but not post-BSA injection (PBI), while percentages of monocytes/thrombocytes (K1+) significantly increased PLI. Interleukin-1 receptor expression on blood lymphocytes increased significantly PLI and PBI. In the spleen, the percentages of total T-cells (CD3+) increased significantly PLI and PBI, macrophage (K1+) percentages increased significantly PLI, while B-cell percentages decreased significantly PLI. These results indicate that following antigen injection, there is a redistribution of peripheral blood lymphocytes (specifically T-lymphocytes) to secondary lymphoid organs and the kinetics and magnitude of the changes can differ according to the type of antigen used.
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Affiliation(s)
- A E Gehad
- National Research Center, Giza, Egypt
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Gehad AE, Lillehoj HS, Hendricks GL, Mashaly MM. Initiation of humoral immunity. I. The role of cytokines and hormones in the initiation of humoral immunity using T-independent and T-dependent antigens. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2002; 26:751-759. [PMID: 12206838 DOI: 10.1016/s0145-305x(02)00020-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The early events during the initiation of immune responses following the injection of T-independent (lipopolysaccharide, LPS) and T-dependent (bovine serum albumin, BSA) antigens were studied in immature male chickens. Specifically, the role of cytokines and hormones in the initiation of humoral immunity against these antigens was investigated. Both interleukin-1 (IL-1) and tumor necrosis factor (TNF-alpha) increased significantly post-LPS but not post-BSA injection. While interleukin-2 (IL-2) significantly decreased post-LPS injection, IL-2 significantly increased post-BSA injection. Furthermore, corticosterone levels significantly increased and tri-iodothyronine (T(3)) levels significantly decreased post-LPS but not post-BSA injection. In this study, the results indicate that although LPS and BSA can induce a humoral antibody response in chickens, they activate different cytokines and neuroendocrine network systems.
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Affiliation(s)
- A E Gehad
- National Research Center, Giza, Egypt
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Martineau L, Shek PN. Changes in circulating lymphocyte subpopulations and mitogen-stimulated response in a rat infusion model of intra-abdominal infection. Crit Care Med 2000; 28:2515-21. [PMID: 10921587 DOI: 10.1097/00003246-200007000-00054] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
OBJECTIVE To describe the alterations in circulating concentrations of immune cells as well as in in vitro mitogen-stimulated response in a recently developed rat model of intra-abdominal infection. DESIGN Randomized, controlled study. SETTING Government research facility. SUBJECTS Male Sprague-Dawley rats. INTERVENTIONS Infected animals received an intraperitoneal infusion of 6.0 x 10(8) colony forming units of Escherichia coli during 12 hrs, whereas control rats received a sterile inoculum. All experimental animals underwent laparotomy and peritoneal lavage at the end of the infusion period. Blood samples were obtained 12 hrs, 36 hrs, or 7 days after the onset of infusion. Splenocytes were concomitantly harvested and assayed for response to the mitogens phytohemagglutinin (PHA), concanavalin A (Con A), and lipopolysaccharides, as well as for production of interleukin (IL)-2. MEASUREMENTS AND MAIN RESULTS Infected rats showed a marked leukopenia (-82% for 36 hrs), with leukocyte counts returning to normal at 7 days. They also developed a marked lymphocytopenia throughout the study; this was achieved through comparable reductions in circulating T and B cells. Con A responses in both groups were similar for 7 days. In contrast, splenocytes from infected animals showed reduced responses to lipopolysaccharides (-64%) and PHA (-30%) for 36 hrs compared with control splenocytes. IL-2 production from mitogen-stimulated splenocytes was suppressed in infected rats to 66% of that of control rats for 7 days. Suppressed PHA responses were not restored to control values in the presence of IL-2. For all of the parameters assessed, control animals showed either no significant changes or relatively fewer changes than infected rats. CONCLUSIONS This model of intra-abdominal infection is associated with changes in circulating concentrations of immune cells as well as with temporary functional defects in B and T cells, consistent with those often observed in patients with peritonitis. However, the role of IL-2 in limiting the adverse effects of infection in this experimental model seems to be limited. This model may be a useful tool in furthering our understanding of the pathophysiology of intra-abdominal infections and in assessing the efficacy of new therapeutic modalities.
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Affiliation(s)
- L Martineau
- Biomedical Technology Section, Defence and Civil Institute of Environmental Medicine, West Toronto, Ontario, Canada
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18
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Mercer JB, Osterud B, Tveita T. The effect of short-term cold exposure on risk factors for cardiovascular disease. Thromb Res 1999; 95:93-104. [PMID: 10418798 DOI: 10.1016/s0049-3848(99)00028-6] [Citation(s) in RCA: 66] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The aim of this study was to see if a short-term period of exposure to cold in young healthy subjects causes changes in hematological factors known to be associated with the promotion of thrombogenesis. Over a period of 48 hours, changes in the distribution of erythrocytes, granulocytes, and blood platelets, as well as several coagulation, inflammatory, and fibrinolytic parameters, were monitored in 11 young healthy male subjects following a short period (1 hour) of cold exposure (CE) (ambient temperature, 11 degrees C) or exposure to thermoneutral conditions (ambient temperature, 26 degrees C) in winter (November). The major findings were: (1) a CE-induced hemoconcentration as indicated by an increase in erythrocyte count (3.2% increase); (2) after appropriate adjustments for changes in hemoconcentration, a cold-induced mobilization of granulocytes (14.5% increase) and a cold-induced decrease in lymphocytes (7% decrease); (3) thromboxane B2 release following endotoxin stimulation of whole blood was increased by 27.4% in the CE experiments; (4) diurnal rhythms were observed in granulocytes, blood platelets, middle plate volume, tissue plasminogen activator, and plasma activator inhibitor; and (5) CE caused no significant changes in lipopolysaccharide-induced tissue factor, nor in the blood coagulation factor VII or cytokines, interleukin-6, and tumor necrosis factor. It is concluded that short-term cold exposure in young healthy subjects initiates a mild inflammatory reaction and a tendency for an increased state of hypercoagulability.
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Affiliation(s)
- J B Mercer
- Department of Medical Physiology, Institute of Medical Biology, Faculty of Medicine, University of Tromsø, Norway.
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Lemaire LCJM, van Lanschot JJB, Stoutenbeek CP, van Deventer SJH, Wells CL, Gouma DJ. Bacterial translocation in multiple organ failure: Cause or epiphenomenon still unproven. Br J Surg 1997. [DOI: 10.1002/bjs.1800841005] [Citation(s) in RCA: 74] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Yamamoto N, Sakai F, Yamazaki H, Nakahara K, Okuhara M. Effect of FR167653, a cytokine suppressive agent, on endotoxin-induced disseminated intravascular coagulation. Eur J Pharmacol 1996; 314:137-42. [PMID: 8957229 DOI: 10.1016/s0014-2999(96)00537-7] [Citation(s) in RCA: 79] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
FR167653 (1-[7-(4-fluorophenyl)-1,2,3,4-tetrahydro-8-(4-pyridyl)pyrazolo[5-1-c] [1,2,4]triazin-2-yl]-2-phenylethanedione sulfate monohydrate) is a low molecular weight inflammatory cytokine inhibitor that inhibits the production of interleukin-1 alpha, interleukin-1 beta and tumor necrosis factor-alpha (TNF-alpha) in human monocytes stimulated with lipopolysaccharide, and in human lymphocytes stimulated with phytohemagglutinin-M. FR167653 inhibited these cytokines in a dose-dependent manner (IC50 values were 0.84, 0.088, 1.1 microM and 0.072, respectively). However, FR167653 did not inhibit even at 10 microM interleukin-6 production by human monocytes, and the production of interleukin-2 and interferon-gamma by human lymphocytes. We evaluated the effect of FR167653 on lipopolysaccharide-induced disseminated intravascular coagulation in rats. FR167653 (0.032-0.32 mg/kg/h for 4 h, intravenous infusion) markedly improved thrombocytopenia and plasma coagulation parameters in a dose-dependent manner, but not leukopenia in this mode. Plasma interleukin-1 and TNF-alpha levels were elevated by lipopolysaccharide administration and the treatment with FR167653 (0.31 mg/kg/h for 4 h) inhibited the increased plasma interleukin-1 (100.0%) and plasma TNF-alpha (89.2%) levels. These results suggest that interleukin-1 and TNF-alpha may play a pivotal role in the pathogenesis of DIC. FR167653 can act as a protective drug in lipopolysaccharide-induced DIC, and this protection is due to an inhibition of increased plasma interleukin-1 and TNF-alpha.
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Affiliation(s)
- N Yamamoto
- Exploratory Research Laboratories, Fujisawa Pharmaceutical Co., Ltd., Ibaraki, Japan
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Zhang Y, Raud J, Hedqvist P, Fredholm BB. Propentofylline inhibits polymorphonuclear leukocyte recruitment in vivo by a mechanism involving adenosine A2A receptors. Eur J Pharmacol 1996; 313:237-42. [PMID: 8911920 DOI: 10.1016/0014-2999(96)00523-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Propentofylline is an atypical xanthine derivative that blocks adenosine uptake and has been shown to protect against ischemia-induced cerebral damage. We have studied the effect of propentofylline on recruitment of polymorphonuclear leukocytes during acute peritonitis induced by zymosan in mice. Following i.p. injection of zymosan, recruitment of polymorphonuclear leukocytes, reflected by myeloperoxidase activity in the peritoneal cavity, increased from 2 h onwards, peaked at 4 h and then decreased gradually. Propentofylline antagonized the zymosan-induced peritoneal myeloperoxidase accumulation in a concentration-dependent manner. This effect of propentofylline was counteracted by the non-selective adenosine receptor antagonist theophylline (50 mg/kg), and by the selective adenosine A2A receptor antagonists, 4-amino-8-chloro-1-phenyl-[1,2,4]-triazolo[4,3-a]quinoxaline (CP 66713) and 1,3-dipropyl-8-[3,4-dimethoxystyryl]-7-methylxanthine (KF 17387) (both at 2 mg/kg). The results indicate that propentofylline can reduce polymorphonuclear leukocyte recruitment in vivo and that this effect is related to an action on adenosine A2A receptors.
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Affiliation(s)
- Y Zhang
- Department of Physiology and Pharmacology, Karolinska Institute, Stockholm, Sweden
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Christman JW, Holden EP, Blackwell TS. Strategies for blocking the systemic effects of cytokines in the sepsis syndrome. Crit Care Med 1995; 23:955-63. [PMID: 7736757 DOI: 10.1097/00003246-199505000-00027] [Citation(s) in RCA: 71] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
OBJECTIVES To review and evaluate animal and human data regarding strategies to intervene in the pathogenesis of the sepsis syndrome by specifically blocking the action of single cytokines. DATA SOURCES The English language medical literature was reviewed, including reports of human clinical trials, animal experiments, and in vitro studies elucidating cellular and molecular interactions. STUDY SELECTION Emphasis was placed on controlled experimental studies that elucidated the effectiveness of antibodies, soluble receptors, and receptor antagonists in intervening in the pathogenesis of the sepsis reaction. DATA EXTRACTION This review focuses on data that directly involve the induction and regulation of protein mediators of sepsis, especially tumor necrosis factor-alpha, interleukin-1 beta, interleukin-6, and interleukin-8. DATA SYNTHESIS Information concerning the potential of cytokine blockers in modulating the sepsis reaction is presented in a logical, clinically oriented fashion. The purpose is to emphasize the potential role of these agents by focusing on the actual existing data. CONCLUSIONS The pathophysiology of the sepsis reaction appears to involve the sequential release of cytokines. Interventions designed to specifically block the biological effects of single cytokines appear to have a role in the management of sepsis syndrome, but well-designed, prospective, randomized, placebo-controlled clinical trials in well-defined clinical populations are necessary to define this role. These trials require the cooperation of clinical and basic scientists.
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