51
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Tatiya-aphiradee N, Chatuphonprasert W, Jarukamjorn K. Oxidative stress exacerbates dextran sulfate sodium-induced ulcerative colitis in ICR mice. Biologia (Bratisl) 2020; 75:2063-2071. [DOI: 10.2478/s11756-020-00524-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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52
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Cimolai N. Mast Cell Biology and Linkages for Non-clonal Mast Cell Activation and Autoimmune/Inflammatory Syndrome Induced by Adjuvants. ACTA ACUST UNITED AC 2020; 2:2310-23. [DOI: 10.1007/s42399-020-00494-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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53
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Hennessy O, McSorley K. Is Routine Hemoglobin Monitoring Necessary after Elective Hip and Knee Arthroplasty? Arthroplast Today 2020; 6:803-6. [PMID: 32984488 DOI: 10.1016/j.artd.2020.07.036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 07/20/2020] [Accepted: 07/22/2020] [Indexed: 01/28/2023] Open
Abstract
Background Many orthopaedic units measure hemoglobin (Hb) levels after primary joint arthroplasty to identify patients with postoperative anemia. With the refinement of surgical techniques, blood loss in primary arthroplasty has decreased. The aim of this study was to investigate the postoperative Hb monitoring and transfusion practices in our own institution after elective hip or knee arthroplasty. Methods We conducted a retrospective audit of all patients who underwent elective total hip or knee arthroplasty in Galway University Hospital between March 1 and June 1, 2019. We recorded when they underwent postoperative Hb testing, whether or not they had a drop of Hb, which would indicate transfusion (<8 g/dL), and whether or not they were transfused. In patients who underwent transfusion, a chart review was performed to establish the presence of factors that would have triggered repeat Hb testing. Results One hundred thirty-six patients underwent elective primary hip or knee arthroplasty in the period. All had a full blood count sent on the first postoperative day. None (0%) had a clinically significant (to < 8g/dL) postoperative Hb drop on day 1. Eighteen (13.2%) patients underwent repeat testing on day 2 or subsequently. Eight (5.9%) exhibited a drop in Hb to less than 8 g/dL, with a mean Hb drop of 4.26 (standard error of the mean ± 0.862, standard deviation ± 0.98), and 5 (3.7%) proceeded to undergo allogenic blood product transfusion. All 5 underwent documented indications for repeat Hb testing. Conclusions There is no evidence for performing routine Hb testing on day 1 after elective hip or knee arthroplasty. We recommend that postoperative Hb testing should only be carried out on patients with additional indications.
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54
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Jhang WK, Park SJ. Evaluation of Disseminated Intravascular Coagulation in Critically Ill Pediatric Hemato-oncology Patients with Septic Shock. Thromb Haemost 2020; 120:1505-1511. [PMID: 32772349 DOI: 10.1055/s-0040-1714737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
BACKGROUND Disseminated intravascular coagulation (DIC) is a serious complication in septic shock. This study aimed to evaluate DIC and associated clinical outcomes using the International Society on Thrombosis and Hemostasis (ISTH) and modified ISTH overt DIC scores in critically ill pediatric hemato-oncology patients with septic shock. METHODS Pediatric hemato-oncology patients with septic shock admitted to the pediatric intensive care unit (PICU) of a tertiary children's hospital between January 2013 and February 2020 were included. We modified the ISTH overt DIC score by eliminating the platelet domain and compared the performances of the ISTH and the modified ISTH overt DIC scores in DIC diagnosis and PICU mortality prediction of these patients. RESULTS DIC was diagnosed in 56.4 and 38.5% of patients by ISTH and modified ISTH overt DIC scores, respectively. Patients with DIC showed a higher pediatric risk of mortality (PRISM) III, pediatric sequential organ failure assessment (pSOFA) scores, and PICU mortality than those without DIC (p < 0.05). The modified ISTH overt DIC score was an independent prognostic factor for PICU mortality and showed a larger area under the receiver operating characteristic curve than the ISTH overt DIC score (0.687 vs. 0.695). Addition of the DIC diagnosis improved the performance of PRISM III in predicting PICU mortality. CONCLUSION Critically ill pediatric hemato-oncology patients with septic shock frequently experience DIC, which was adequately evaluated by both ISTH and modified ISTH overt DIC scores. Considering the characteristics of these patients, the modified ISTH overt DIC score may be a promising prognostic factor for clinical outcomes in these critically ill pediatric patients.
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Affiliation(s)
- Won Kyoung Jhang
- Division of Pediatric Critical Care Medicine, Department of Pediatrics, Asan Medical Center Children's Hospital, University of Ulsan College of Medicine, Seoul, Korea
| | - Seong Jong Park
- Division of Pediatric Critical Care Medicine, Department of Pediatrics, Asan Medical Center Children's Hospital, University of Ulsan College of Medicine, Seoul, Korea
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55
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Hart R, Burns D, Ramaekers B, Ren S, Gladwell D, Sullivan W, Davison N, Saunders O, Sly I, Cain T, Lee D. R and Shiny for Cost-Effectiveness Analyses: Why and When? A Hypothetical Case Study. Pharmacoeconomics 2020; 38:765-776. [PMID: 32236891 DOI: 10.1007/s40273-020-00903-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
INTRODUCTION Health economics models are typically built in Microsoft Excel® owing to its wide familiarity, accessibility and perceived transparency. However, given the increasingly rapid and analytically complex decision-making needs of both the pharmaceutical industry and the field of health economics and outcomes research (HEOR), the demands of cost-effectiveness analyses may be better met by the programming language R. OBJECTIVE This case study provides an explicit comparison between Excel and R for contemporary cost-effectiveness analysis. METHODS We constructed duplicate cost-effectiveness models using Excel and R (with a user interface built using the Shiny package) to address a hypothetical case study typical of contemporary health technology assessment. RESULTS We compared R and Excel versions of the same model design to determine the advantages and limitations of the modelling platforms in terms of (i) analytical capability, (ii) data safety, (iii) building considerations, (iv) usability for technical and non-technical users and (v) model adaptability. CONCLUSIONS The findings of this explicit comparison are used to produce recommendations for when R might be more suitable than Excel in contemporary cost-effectiveness analyses. We conclude that selection of appropriate modelling software needs to consider case-by-case modelling requirements, particularly (i) intended audience, (ii) complexity of analysis, (iii) nature and frequency of updates and (iv) anticipated model run time.
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Affiliation(s)
- Rose Hart
- BresMed Health Solutions, Sheffield, UK.
| | | | - Bram Ramaekers
- Department of Clinical Epidemiology and Medical Technology Assessment, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Shijie Ren
- School of Health and Related Research, University of Sheffield, Sheffield, UK
| | | | | | | | | | - Indeg Sly
- BresMed Health Solutions, Sheffield, UK
| | | | - Dawn Lee
- BresMed Health Solutions, Sheffield, UK
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56
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Alsassa S, Lefèvre T, Laugier V, Stindel E, Ansart S. Modeling Early Stages of Bone and Joint Infections Dynamics in Humans: A Multi-Agent, Multi-System Based Model. Front Mol Biosci 2020; 7:26. [PMID: 32226790 PMCID: PMC7080862 DOI: 10.3389/fmolb.2020.00026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2018] [Accepted: 02/07/2020] [Indexed: 11/13/2022] Open
Abstract
Diagnosis and management of bone and joint infections (BJI) is a challenging task. The high intra and inter patient's variability in terms of clinical presentation makes it impossible to rely on a systematic description or classical statistical analysis for its diagnosis. Advances can be achieved through a better understanding of the system behavior that results from the interactions between the components at a micro-scale level, which is difficult to mastered using traditional methods. Multiple studies from the literature report factors and interactions that affect the dynamics of the BJI system. The objectives of this study were (i) to perform a systematic review to identify relevant interactions between agents (cells, pathogens) and parameters values that characterize agents and interactions, and (ii) to develop a two dimensional computational model of the BJI system based on the results of the systematic review. The model would simulate the behavior resulting from the interactions on the cellular and molecular levels to explore the BJI dynamics, using an agent-based modeling approach. The BJI system's response to different microbial inoculum levels was simulated. The model succeeded in mimicking the dynamics of bacteria, the innate immune cells, and the bone mass during the first stage of infection and for different inoculum levels in a consistent manner. The simulation displayed the destruction in bone tissue as a result of the alteration in bone remodeling process during the infection. The model was used to generate different patterns of system behaviors that could be analyzed in further steps. Simulations results suggested evidence for the existence of latent infections. Finally, we presented a way to analyze and synthesize massive simulated data in a concise and comprehensive manner based on the semi-supervised identification of ordinary differential equations (ODE) systems. It allows to use the known framework for temporal and structural ODE analyses and therefore summarize the whole simulated system dynamical behavior. This first model is intended to be validated by in vivo or in vitro data and expected to generate hypotheses to be challenged by real data. Step by step, it can be modified and complexified based on the test/validation iteration cycles.
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Affiliation(s)
- Salma Alsassa
- Laboratory of Medical Information Processing (LaTIM - UMR 1101 INSERM), IBRS, Université de Bretagne Occidentale, Department of Medicine, Brest, France.,Tekliko SARL, Paris, France
| | - Thomas Lefèvre
- Iris UMR 8156 CNRS - U997 Inserm - EHESS - UP 13, Paris, France.,AP-HP, Jean Verdier Teaching Hospital, Department of Legal and Social Medicine, Bondy, France
| | | | - Eric Stindel
- Laboratory of Medical Information Processing (LaTIM - UMR 1101 INSERM), IBRS, Université de Bretagne Occidentale, Department of Medicine, Brest, France.,La Cavale Blanche University Hospital, Infection Diseases Unit, Brest, France
| | - Séverine Ansart
- Laboratory of Medical Information Processing (LaTIM - UMR 1101 INSERM), IBRS, Université de Bretagne Occidentale, Department of Medicine, Brest, France.,La Cavale Blanche University Hospital, Infection Diseases Unit, Brest, France
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57
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Hanusovska E, Sufliarska S. Monitoring of Chimerism in Rare Haematological Malignant Diseases after Allogeneic Haematopoietic Stem Cell Transplantation. Rare Dis 2020. [DOI: 10.5772/intechopen.89845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
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58
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Abstract
Mast cell activation syndrome (MCAS) is a chronic multisystem disease of aberrant constitutive and reactive mast cell mediator release causing generally inflammatory, allergic, and dystrophic issues. The pathobiology of MCAS drives extraordinary clinical complexity and heterogeneity, which led to only recent recognition despite increasingly apparent substantial prevalence, perhaps as high as 17%. It also has a strong female predilection. Thus, MCAS inescapably impacts pregnancy and the post-partum period in many women. No specific research in the pregnant or post-partum MCAS population has been performed yet. However, its prevalence and potential for driving substantial morbidity merit obstetric providers' acquaintance with this illness and its potential impacts on their patients during pregnancy, delivery, the post-partum period, and lactation. Extensive literature review across all medical specialities, plus direct experience in the authors' practices, provides guidance in recognising MCAS in pregnancy and diagnosing and effectively managing it. Described herein are manners in which MCAS, a protean multisystem disease, adversely affects all stages of pregnancy and post-partum. In order to reduce risks of MCAS causing complications before, during and after pregnancy, identifying and controlling the syndrome prior to pregnancy is best, but, even if the disease is not recognised until late, there may still be opportunities to mitigate its effects. There is precedent for improved outcomes if comorbid MCAS is recognised and controlled. This review provides the first comprehensive guide for obstetric providers regarding this emerging major comorbidity.
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59
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Zhu YP, Padgett L, Dinh HQ, Marcovecchio P, Blatchley A, Wu R, Ehinger E, Kim C, Mikulski Z, Seumois G, Madrigal A, Vijayanand P, Hedrick CC. Identification of an Early Unipotent Neutrophil Progenitor with Pro-tumoral Activity in Mouse and Human Bone Marrow. Cell Rep 2020; 24:2329-2341.e8. [PMID: 30157427 DOI: 10.1016/j.celrep.2018.07.097] [Citation(s) in RCA: 138] [Impact Index Per Article: 34.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2018] [Revised: 06/18/2018] [Accepted: 07/27/2018] [Indexed: 12/31/2022] Open
Abstract
Neutrophils are short-lived cells that play important roles in both health and disease. Neutrophils and monocytes originate from the granulocyte monocyte progenitor (GMP) in bone marrow; however, unipotent neutrophil progenitors are not well defined. Here, we use cytometry by time of flight (CyTOF) and single-cell RNA sequencing (scRNA-seq) methodologies to identify a committed unipotent early-stage neutrophil progenitor (NeP) in adult mouse bone marrow. Importantly, we found a similar unipotent NeP (hNeP) in human bone marrow. Both NeP and hNeP generate only neutrophils. NeP and hNeP both significantly increase tumor growth when transferred into murine cancer models, including a humanized mouse model. hNeP are present in the blood of treatment-naive melanoma patients but not of healthy subjects. hNeP can be readily identified by flow cytometry and could be used as a biomarker for early cancer discovery. Understanding the biology of hNeP should allow the development of new therapeutic targets for neutrophil-related diseases, including cancer.
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Affiliation(s)
- Yanfang Peipei Zhu
- Division of Inflammation Biology, La Jolla Institute for Allergy and Immunology, La Jolla, CA 92037, USA.
| | - Lindsey Padgett
- Division of Inflammation Biology, La Jolla Institute for Allergy and Immunology, La Jolla, CA 92037, USA
| | - Huy Q Dinh
- Division of Inflammation Biology, La Jolla Institute for Allergy and Immunology, La Jolla, CA 92037, USA
| | - Paola Marcovecchio
- Division of Inflammation Biology, La Jolla Institute for Allergy and Immunology, La Jolla, CA 92037, USA
| | - Amy Blatchley
- Division of Inflammation Biology, La Jolla Institute for Allergy and Immunology, La Jolla, CA 92037, USA
| | - Runpei Wu
- Division of Inflammation Biology, La Jolla Institute for Allergy and Immunology, La Jolla, CA 92037, USA
| | - Erik Ehinger
- Division of Inflammation Biology, La Jolla Institute for Allergy and Immunology, La Jolla, CA 92037, USA
| | - Cheryl Kim
- Flow Cytometry Core Facility, La Jolla Institute for Allergy and Immunology, La Jolla, CA 92037, USA
| | - Zbigniew Mikulski
- Division of Inflammation Biology, La Jolla Institute for Allergy and Immunology, La Jolla, CA 92037, USA
| | - Gregory Seumois
- Division of Vaccine Discovery, La Jolla Institute for Allergy and Immunology, La Jolla, CA 92037, USA
| | - Ariel Madrigal
- Division of Vaccine Discovery, La Jolla Institute for Allergy and Immunology, La Jolla, CA 92037, USA
| | - Pandurangan Vijayanand
- Division of Vaccine Discovery, La Jolla Institute for Allergy and Immunology, La Jolla, CA 92037, USA
| | - Catherine C Hedrick
- Division of Inflammation Biology, La Jolla Institute for Allergy and Immunology, La Jolla, CA 92037, USA.
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60
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Shoeibi S. Diagnostic and theranostic microRNAs in the pathogenesis of atherosclerosis. Acta Physiol (Oxf) 2020; 228:e13353. [PMID: 31344321 DOI: 10.1111/apha.13353] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Revised: 07/22/2019] [Accepted: 07/23/2019] [Indexed: 12/12/2022]
Abstract
MicroRNAs (miRNAs) are a group of small single strand and noncoding RNAs that regulate several physiological and molecular signalling pathways. Alterations of miRNA expression profiles may be involved with pathophysiological processes underlying the development of atherosclerosis and cardiovascular diseases, including changes in the functions of the endothelial cells and vascular smooth muscle cells, such as cell proliferation, migration and inflammation, which are involved in angiogenesis, macrophage function and foam cell formation. Thus, miRNAs can be considered to have a crucial role in the progression, modulation and regulation of every stage of atherosclerosis. Such potential biomarkers will enable us to predict therapeutic response and prognosis of cardiovascular diseases and adopt effective preclinical and clinical treatment strategies. In the present review article, the current data regarding the role of miRNAs in atherosclerosis were summarized and the potential miRNAs as prognostic, diagnostic and theranostic biomarkers in preclinical and clinical studies were further discussed. The highlights of this review are expected to present opportunities for future research of clinical therapeutic approaches in vascular diseases resulting from atherosclerosis with an emphasis on miRNAs.
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Affiliation(s)
- Sara Shoeibi
- Atherosclerosis Research Center Ahvaz Jundishapur University of Medical Sciences Ahvaz Iran
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61
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Muhammad A, Waziri AD, Forcados GE, Sanusi B, Sani H, Malami I, Abubakar IB, Muhammad A, Muhammad RA, Mohammed HA. Sickling-suppressive effects of chrysin may be associated with sequestration of deoxy-haemoglobin, 2,3-bisphosphoglycerate mutase, alteration of redox homeostasis and functional chemistry of sickle erythrocytes. Hum Exp Toxicol 2019; 39:537-546. [PMID: 31876182 DOI: 10.1177/0960327119895815] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Sickle cell disease (SCD) is a medical condition caused by mutation in a single nucleotide in the β-globin gene. It is a health problem for people in sub-Saharan Africa, the Middle East and India. Orthodox drugs developed so far for SCD focus largely on symptomatic respite of pain and crisis mitigation. We investigated the antisickling effects of chrysin via modulation of deoxy-haemoglobin, 2,3-bisphosphoglycerate mutase, redox homeostasis and alteration of functional chemistry in human sickle erythrocytes. In silico and in vitro methods were adopted for the studies. Chrysin was docked against deoxy-haemoglobin and 2,3-bisphosphoglycerate mutase, with binding energies (-24.064 and -18.171 kcal/mol) and inhibition constant (K i) of 0.990 µM and 0.993 µM at their active sites through strong hydrophobic and hydrogen bond interactions. Sickling was induced with 2% metabisulphite at 3 h. Chrysin was able to prevent sickling maximally at 2.5 µg/mL and reversed the same at 12.5 µg/mL, by 66.5% and 69.6%, respectively. Treatment with chrysin significantly (p < 0.05) re-established the integrity of erythrocytes membrane as evident from the observed percentage of haemolysis relative to induced erythrocytes. Chrysin also significantly (p < 0.05) prevented and reversed lipid peroxidation. Similarly, glutathione and catalase levels were observed to significantly (p < 0.05) increase with concomitant significant (p < 0.05) decrease in superoxide dismutase activity relative to untreated. From Fourier-transform infrared results, treatment with chrysin was able to favourably alter the functional chemistry, judging from the shifts and functional groups observed. Sickling-suppressive effects of chrysin may therefore be associated with sequestration of deoxy-haemoglobin, 2,3-bisphosphoglycerate mutase, alteration of redox homeostasis and functional chemistry of sickle erythrocytes.
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Affiliation(s)
- A Muhammad
- Faculty of Life Sciences, Department of Biochemistry, Ahmadu Bello University, Zaria, Kaduna State, Nigeria
| | - A D Waziri
- Department of Haematology, Ahmadu Bello University Teaching Hospital, Zaria, Kaduna State, Nigeria
| | - G E Forcados
- Faculty of Life Sciences, Department of Biochemistry, Ahmadu Bello University, Zaria, Kaduna State, Nigeria
| | - B Sanusi
- Faculty of Life Sciences, Department of Biochemistry, Ahmadu Bello University, Zaria, Kaduna State, Nigeria
| | - H Sani
- Department of Medicine, Kaduna State University, Kaduna State, Nigeria
| | - I Malami
- Faculty of Pharmaceutical Sciences, Department of Pharmacognosy and Ethnopharmacy, Usmanu Danfodiyo University, Sokoto, Nigeria
| | - I B Abubakar
- Faculty of Life Sciences, Department of Biochemistry, Kebbi State University of Science and Technology, Aliero, Kebbi State, Nigeria
| | - A Muhammad
- Faculty of Life Sciences, Department of Biochemistry, Ahmadu Bello University, Zaria, Kaduna State, Nigeria
| | - R A Muhammad
- Faculty of Life Sciences, Department of Biochemistry, Ahmadu Bello University, Zaria, Kaduna State, Nigeria
| | - H A Mohammed
- Faculty of Life Sciences, Department of Biochemistry, Ahmadu Bello University, Zaria, Kaduna State, Nigeria
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Sophocleous RA, Sluyter V, Curtis BL, Curtis SJ, Jurak LM, Faulks M, Spildrejorde M, Gates S, Proctor EJ, Seavers A, Watson D, Kuit T, Dowton M, Stokes L, Sluyter R. Association of a P2RX7 gene missense variant with brachycephalic dog breeds. Anim Genet 2019; 51:127-131. [PMID: 31774195 DOI: 10.1111/age.12884] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/06/2019] [Indexed: 12/16/2022]
Abstract
Missense variants are associated with various phenotypic traits and disorders in dogs. The canine P2RX7 gene, coding the ATP-gated P2X7 receptor ion channel, contains four known missense variants. The current study aimed to examine the presence of these variants in a random sample of pedigree and mixed-pedigree dogs. Exons 3, 8, 11 and 13 of the P2RX7 gene, encoding these four respective variants, in 65 dogs were assessed by Sanger sequencing and combined with existing sequencing data from another 69 dogs. The distribution of these variants was then evaluated in all 134 dogs combined and separately within individual breeds including 35 different pure breeds. The rs23314713 (p.Phe103Leu) and rs23315462 (p.Pro452Ser) variants were present in 47 and 40% of all dogs studied respectively, with the rs23314713 variant associated with brachycephalic breeds. Among pedigree dogs, the rs23314713 and rs23315462 variants were associated with brachycephalic and non-brachycephalic breeds respectively. The rs851148233 (p.Arg270Cys) and rs850760787 (p.Arg365Gln) variants were present only in dogs of Cocker Spaniel and Labrador Retriever pedigrees respectively. No other missense variants were found in exons 3, 8, 11 and 13 of the P2RX7 gene within the dogs. In conclusion, the rs23314713 and rs23315462 missense variants of the P2RX7 gene are present in a large proportion of dogs, with the rs23314713 variant associated with a number of brachycephalic breeds. However, the association of this variant with dogs of bulldog ancestry, not brachycephaly per se, cannot be excluded.
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Affiliation(s)
- R A Sophocleous
- Illawarra Health and Medical Research Institute, Wollongong, NSW, 2522, Australia.,Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - V Sluyter
- Illawarra Health and Medical Research Institute, Wollongong, NSW, 2522, Australia.,Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - B L Curtis
- Albion Park Veterinary Hospital, Albion Park, NSW, 2527, Australia
| | - S J Curtis
- Albion Park Veterinary Hospital, Albion Park, NSW, 2527, Australia
| | - L M Jurak
- Illawarra Health and Medical Research Institute, Wollongong, NSW, 2522, Australia.,Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - M Faulks
- Illawarra Health and Medical Research Institute, Wollongong, NSW, 2522, Australia.,Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - M Spildrejorde
- Illawarra Health and Medical Research Institute, Wollongong, NSW, 2522, Australia.,Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - S Gates
- Illawarra Health and Medical Research Institute, Wollongong, NSW, 2522, Australia.,Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - E-J Proctor
- Illawarra Health and Medical Research Institute, Wollongong, NSW, 2522, Australia.,Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - A Seavers
- Oak Flats Veterinary Clinic, Oak Flats, NSW, 2529, Australia
| | - D Watson
- Illawarra Health and Medical Research Institute, Wollongong, NSW, 2522, Australia.,Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - T Kuit
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - M Dowton
- Illawarra Health and Medical Research Institute, Wollongong, NSW, 2522, Australia.,Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - L Stokes
- School of Pharmacy, University of East Anglia, Norwich, NR4 7TJ, UK
| | - R Sluyter
- Illawarra Health and Medical Research Institute, Wollongong, NSW, 2522, Australia.,Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW, 2522, Australia
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63
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Pereira M, Valério-Bolas A, Saraiva-Marques C, Alexandre-Pires G, Pereira da Fonseca I, Santos-Gomes G. Development of Dog Immune System: From in Uterus to Elderly. Vet Sci 2019; 6:vetsci6040083. [PMID: 31640234 PMCID: PMC6958461 DOI: 10.3390/vetsci6040083] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 10/10/2019] [Accepted: 10/12/2019] [Indexed: 12/12/2022] Open
Abstract
Immune system recognize and fight back foreign microorganisms and inner modifications that lead to deficient cell and tissue functions. During a dog's life, the immune system needs to adapt to different physiological conditions, assuring surveillance and protection in a careful and controlled way. Pregnancy alters normal homeostasis, requiring a balance between immunity and tolerance. The embryos and fetus should be protected from infections, while the female dog must tolerate the growing of semi-allografts in her uterus. After birth, newborn puppies are at great risk of developing infectious diseases, because their immune system is in development and immune memory is absent. Passive transfer of immunity through colostrum is fundamental for puppy survival in the first weeks of life, but hampers the development of an active immune response to vaccination. At the end of life, dogs experience a decline in the structure and functional competence of the immune system, compromising the immune responses to novel antigenic challenges, such as infections and vaccines. Therefore, the current article reviews the general processes related to the development of the dog´s immune system, providing an overview of immune activity throughout the dog's life and its implications in canine health, and highlighting priority research goals.
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Affiliation(s)
- Maria Pereira
- Global Health and Tropical Medicine (GHTM), Instituto de Higiene e Medicina Tropical (IHMT), Universidade Nova de Lisboa (UNL), R. da Junqueira 100, 1349-008 Lisboa, Portugal.
- Instituto Politécnico de Portalegre (IPP), Praça do Município 11, 7300-110 Portalegre, Portugal.
- Agrarian School of the Polytechnic Institute of Viseu, Quinta da Alagoa-Estrada de Nelas Ranhados, 3500-606 Viseu, Portugal.
| | - Ana Valério-Bolas
- Global Health and Tropical Medicine (GHTM), Instituto de Higiene e Medicina Tropical (IHMT), Universidade Nova de Lisboa (UNL), R. da Junqueira 100, 1349-008 Lisboa, Portugal.
| | - Cátia Saraiva-Marques
- Centro Interdisciplinar de Investigação em Sanidade Animal (CIISA), Faculdade de Medicina Veterinária (FMV), Universidade de Lisboa (UL), Av. Universidade Técnica, 1300-477 Lisboa, Portugal.
| | - Graça Alexandre-Pires
- Centro Interdisciplinar de Investigação em Sanidade Animal (CIISA), Faculdade de Medicina Veterinária (FMV), Universidade de Lisboa (UL), Av. Universidade Técnica, 1300-477 Lisboa, Portugal.
| | - Isabel Pereira da Fonseca
- Centro Interdisciplinar de Investigação em Sanidade Animal (CIISA), Faculdade de Medicina Veterinária (FMV), Universidade de Lisboa (UL), Av. Universidade Técnica, 1300-477 Lisboa, Portugal.
| | - Gabriela Santos-Gomes
- Global Health and Tropical Medicine (GHTM), Instituto de Higiene e Medicina Tropical (IHMT), Universidade Nova de Lisboa (UNL), R. da Junqueira 100, 1349-008 Lisboa, Portugal.
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Andryukov BG, Bogdanova VD, Lyapun IN. PHENOTYPIC HETEROGENEITY OF NEUTROPHILS: NEW ANTIMICROBIC CHARACTERISTICS AND DIAGNOSTIC TECHNOLOGIES. Gematologiâ i transfuziologiâ 2019. [DOI: 10.35754/0234-5730-2019-64-2-211-221] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Introduction. Neutrophils are the most numerous subpopulation of leukocytes circulating in the blood; they constitute the first line of defence of the innate link of the immune system.Aim. To generalize basic concepts about phenotypic and functional heterogeneity of neutrophils.General findings. According to contemporary concepts, this type of blood cells performs not only antimicrobial functions, but also participates in capture and destruction of various microorganisms, including such processes as phagocytosis and intracellular degradation, degranulation and formation of extracellular neutrophilic traps after the detection of microorganisms. Neutrophils are considered to be a phenotypically heterogeneous pool of blood cells featuring a significant functional variability. Under pathological conditions, they can differentiate into discrete subpopulations with va rious phenotypic and functional characteristics. They are capable of interaction with macrophages, natural killers, dendritic and mesenchymal stem cells, B and T lymphocytes or platelets. In addition, neutrophils exhibit vector properties with respect to cancerous tumours. They possess a high morphological and functional variability, being modulators of both inflammation and active triggers of immune responses. A search for molecular markers able to efficiently differentiate neutrophil phenotypes and establish the degree of their diagnostic specificity for various pathologies is of a particular importance.
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Affiliation(s)
- B. G. Andryukov
- G.P. Somov Research Institute of Epidemiology and Microbiology;
Far Eastern Federal University, School of Biomedicine, Department of Basic Sciences
| | - V. D. Bogdanova
- Far Eastern Federal University, School of Biomedicine, Department of Basic Sciences
| | - I. N. Lyapun
- G.P. Somov Research Institute of Epidemiology and Microbiology
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Abstract
Introduction: Neutrophils are the most abundant inflammatory cells in the lungs of patients with chronic lung diseases, especially COPD, yet despite this, patients often experience repeated chest infections. Neutrophil function may be altered in disease, but the reasons are unclear. In chronic disease, sequential pro-inflammatory and pro-repair responses appear distorted. As understanding of neutrophil heterogeneity has expanded, it is suggested that different neutrophil phenotypes may impact on health and disease. Areas covered: In this review, the definition of cellular phenotype, the implication of neutrophil surface markers and functions in chronic lung disease and the complex influences of external, local and genetic factors on these changes are discussed. Literature was accessed up to the 19 July 2019 using: PubMed, US National Library of Medicine National Institutes of Health and the National Centre for Biotechnology Information. Expert opinion: As more is learned about neutrophils, the further we step from the classical view of neutrophils being unrefined killing machines to highly complex and finely tuned cells. Future therapeutics may aim to normalize neutrophil function, but to achieve this, knowledge of phenotypes in humans and how these relate to observed pathology and disease processes is required.
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Affiliation(s)
- Michael J Hughes
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham , Birmingham , UK
| | - Elizabeth Sapey
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham , Birmingham , UK
| | - Robert Stockley
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham , Birmingham , UK
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66
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Abstract
The role of neutrophils in tumor growth and metastasis is still controversial. Studies in clinically relevant models of cancer have shown that neutrophils can promote tumor growth and development and metastasis, or inhibit it. Thus, further analysis is required to fully elucidate the role of neutrophils in cancer. A number of different methods are available for neutrophil isolation and characterization. However, Fluorescence-activated cell sorting (FACS) is particularly effective for isolating neutrophils and assessing their phenotype as it allows for the simultaneous use of multiple cell surface markers, can be used for isolation of both blood and tumor neutrophils and features a high purity and high yields.
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Affiliation(s)
- Agnieszka Swierczak
- MRC Centre for Reproductive Health, Queen's Medical Research Institute, The University of Edinburgh, Edinburgh, United Kingdom
| | - Jeffrey W Pollard
- MRC Centre for Reproductive Health, Queen's Medical Research Institute, The University of Edinburgh, Edinburgh, United Kingdom.
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Muhammad A, Waziri AD, Forcados GE, Sanusi B, Sani H, Malami I, Abubakar IB, Oluwatoyin HY, Adinoyi OA, Mohammed HA. Sickling-preventive effects of rutin is associated with modulation of deoxygenated haemoglobin, 2,3-bisphosphoglycerate mutase, redox status and alteration of functional chemistry in sickle erythrocytes. Heliyon 2019; 5:e01905. [PMID: 31297461 PMCID: PMC6597891 DOI: 10.1016/j.heliyon.2019.e01905] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 05/20/2019] [Accepted: 06/03/2019] [Indexed: 12/23/2022] Open
Abstract
Sickle cell anaemia is a hereditary disease branded by an upsurge in generation of ROS, irregular iron release and little or no antioxidant activity which can lead to cellular injuries due to oxidative stress resulting in severe symptoms including anaemia and pain. The disease is caused by a mutated version of the gene that helps make haemoglobin, the protein that carries oxygen in red blood cells. We used in silico and in vitro experiments to examine the antisickling effects of rutin for the first time by means of before and after induction approaches in sickle erythrocytes. Rutin was docked against deoxy-haemoglobin and 2,3-bisphosphoglycerate mutase, revealing binding energies (-27.329 and -25.614 kcal/mol) and Ki of 0.989μM and 0.990 μM at their catalytic sites through strong hydrophobic and hydrogen bond interactions. Sickling was thereafter, induced at 3 h with 2% metabisulphite. Rutin prevented sickling maximally at 12.3μM and reversed same at 16.4μM, by 78.5% and 69.9%, one-to-one. Treatment with rutin significantly (P < 0.05) reinvented the integrity of erythrocytes membrane as evident from the practical % haemolysis compared to induced erythrocytes. Rutin also significantly (P < 0.05) prevented and reversed lipid peroxidation relative to untreated. Likewise, GSH, CAT levels were observed to significantly (P < 0.05) increase with concomitant significant (P < 0.05) decrease in SOD activity based on administration of rutin after sickling induction approach. Furthermore, FTIR results showed that treatment with rutin favourably altered the functional chemistry, umpiring from shifts and functional groups observed. It can thus be deduced that, antisickling effects of rutin may be associated with modulation of deoxy-haemoglobin, 2,3-bisphosphoglycerate mutase, alteration of redox homeostasis and functional chemistry of sickle erythrocytes.
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Affiliation(s)
- Aliyu Muhammad
- Department of Biochemistry, Faculty of Life Sciences, Ahmadu Bello University, Zaria, Kaduna State, Nigeria
| | - Aliyu Dahiru Waziri
- Department of Haematology, Ahmadu Bello University Teaching Hospital, Zaria, Kaduna State, Nigeria
| | - Gilead Ebiegberi Forcados
- Department of Biochemistry, Faculty of Life Sciences, Ahmadu Bello University, Zaria, Kaduna State, Nigeria
| | - Babangida Sanusi
- Department of Biochemistry, Faculty of Life Sciences, Ahmadu Bello University, Zaria, Kaduna State, Nigeria
| | - Hadiza Sani
- Department of Medicine, Kaduna State University, Kaduna State, Nigeria
| | - Ibrahim Malami
- Department of Pharmacognosy and Ethnopharmacy, Faculty of Pharmaceutical Sciences, Usmanu Danfodiyo University, PMB 2346, Sokoto, Nigeria
| | - Ibrahim Babangida Abubakar
- Department of Biochemistry, Faculty of Life Sciences, Kebbi State University of Science and Technology, Aliero, PMB 1144, Kebbi State, Nigeria
| | - Habeebah Yahya Oluwatoyin
- Department of Biochemistry, Faculty of Life Sciences, Ahmadu Bello University, Zaria, Kaduna State, Nigeria
| | - Otaru Abdulrasheed Adinoyi
- Department of Biochemistry, Faculty of Life Sciences, Ahmadu Bello University, Zaria, Kaduna State, Nigeria
| | - Hafsat Abdullahi Mohammed
- Department of Biochemistry, Faculty of Life Sciences, Ahmadu Bello University, Zaria, Kaduna State, Nigeria
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Theoharides TC, Tsilioni I, Ren H. Recent advances in our understanding of mast cell activation - or should it be mast cell mediator disorders? Expert Rev Clin Immunol 2019; 15:639-656. [PMID: 30884251 PMCID: PMC7003574 DOI: 10.1080/1744666x.2019.1596800] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Accepted: 03/14/2019] [Indexed: 02/07/2023]
Abstract
INTRODUCTION An increasing number of patients present with multiple symptoms affecting many organs including the brain due to multiple mediators released by mast cells. These unique tissue immune cells are critical for allergic reactions triggered by immunoglobulin E (IgE), but are also stimulated (not activated) by immune, drug, environmental, food, infectious, and stress triggers, leading to secretion of multiple mediators often without histamine and tryptase. The presentation, diagnosis, and management of the spectrum of mast cell disorders are very confusing. As a result, neuropsychiatric symptoms have been left out, and diagnostic criteria made stricter excluding most patients. Areas covered: A literature search was performed on papers published between January 1990 and November 2018 using MEDLINE. Terms used were activation, antihistamines, atopy, autism, brain fog, heparin, KIT mutation, IgE, inflammation, IL-6, IL-31, IL-37, luteolin, mast cells, mastocytosis, mediators, mycotoxins, release, secretion, tetramethoxyluteolin, and tryptase. Expert opinion: Conditions associated with elevated serum or urine levels of any mast cell mediator, in the absence of comorbidities that could explain elevated levels, should be considered 'Mast Cell Mediator Disorders (MCMD).' Emphasis should be placed on the identification of unique mast cell mediators, and development of drugs or supplements that inhibit their release.
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Affiliation(s)
- Theoharis C. Theoharides
- Molecular Immunopharmacology and Drug Discovery Laboratory, Department of Immunology, Tufts University School of Medicine, Boston, MA, USA
- Sackler School of Graduate Biomedical Sciences, Tufts University School of Medicine, Boston, MA, USA
- Department of Internal Medicine, Tufts University School of Medicine and Tufts Medical Center, Boston, MA, USA
- Department of Psychiatry, Tufts University School of Medicine and Tufts Medical Center, Boston, MA, USA
| | - Irene Tsilioni
- Molecular Immunopharmacology and Drug Discovery Laboratory, Department of Immunology, Tufts University School of Medicine, Boston, MA, USA
| | - Huali Ren
- Department of Otolaryngology, Beijing Electric Power Hospital, Beijing, China
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69
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Afrin LB, Dempsey TT, Rosenthal LS, Dorff SR. Successful mast-cell-targeted treatment of chronic dyspareunia, vaginitis, and dysfunctional uterine bleeding. J OBSTET GYNAECOL 2019; 39:664-669. [DOI: 10.1080/01443615.2018.1550475] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
| | | | | | - Shanda R. Dorff
- HealthPartners North Suburban Family Physicians, Roseville, MN, USA
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70
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Ajibola KA, Adedokun KA, Oduola T, Oparinde DP, Ayelagbe OG, Ojokuku HO. Assessment of iron status and interplay between lipid peroxidation and antioxidant capacity in common hemoglobin variants in Osun State, southwestern Nigeria. Kaohsiung J Med Sci 2019; 35:358-364. [DOI: 10.1002/kjm2.12062] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Accepted: 03/07/2019] [Indexed: 01/09/2023] Open
Affiliation(s)
- Kabiru A. Ajibola
- Department of Chemical PathologyLadoke Akintola University of Technology Osogbo Osun State Nigeria
| | - Kamoru A. Adedokun
- Department of Chemical PathologyCollege of Medicine, University of Ibadan Ibadan Oyo State Nigeria
- Department of Oral PathologyKing Saud University Medical City, DUH Riyadh Saudi Arabia
| | - Taofeeq Oduola
- Department of Chemical PathologyFaculty of Medical Laboratory Sciences, Usmanu Danfodiyo University Sokoto Nigeria
| | - Dolapo P. Oparinde
- Department of Chemical PathologyLadoke Akintola University of Technology Osogbo Osun State Nigeria
| | - Olubunmi G. Ayelagbe
- Department of Chemical PathologyLadoke Akintola University of Technology Osogbo Osun State Nigeria
| | - Hammed O. Ojokuku
- Department of Medical LaboratoryReddington Multispecialist Hospital Victoria Island, Lagos Nigeria
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71
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Sido B, Homann J, Hertfelder HJ, Zienkiewicz T, Christians KP, Schablin P, Mücke M, Molderings GJ. [Surgical interventions in patients with systemic mast cell activation disease : Recommendations for perioperative management]. Chirurg 2019; 90:548-556. [PMID: 30874862 DOI: 10.1007/s00104-019-0935-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND Systemic mast cell activation disease (MCAD, prevalence 5-10%) is a multifactorial, polygenic disease with multisystemic symptoms that is characterized by an unregulated increased release of mast cell mediators and an accumulation of activated mast cells potentially in all organs and tissues. Due to the high prevalence of the disease, physicians involved in surgical, anesthesiological and interventional procedures are often unknowingly faced with MCAD patients experiencing unexpected preoperative, intraoperative and postoperative complications, if no mast cell-specific treatment regimens have been applied. OBJECTIVE The findings from a literature search, consensus recommendations of the various international expert groups and extensive own experience in the treatment of MCAD patients enable an empirical and evidence-based care of MCAD patients in association with invasive procedures. RESULTS AND CONCLUSION Due to the high prevalence of MCAD in the population, it can be assumed that patients with MCAD are correspondingly frequently represented in the surgical patient collective. When MCAD-specific peculiarities are preventively considered in the anesthesiological and surgical procedures in patients with proven or suspected mast cell disease, MCAD patients should not be classified as being at risk.
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Affiliation(s)
- B Sido
- Abteilung für Allgemein- und Viszeralchirurgie, Haus St. Elisabeth, Gemeinschaftskrankenhaus Bonn, Bonn, Deutschland
| | - J Homann
- Abteilung für Innere Medizin, Haus St. Elisabeth, Gemeinschaftskrankenhaus Bonn, Bonn, Deutschland
| | - H-J Hertfelder
- Institut für Experimentelle Hämatologie & Transfusionsmedizin, Universitätsklinikum Bonn, Bonn, Deutschland
| | - T Zienkiewicz
- Institut für Pathologie Bonn-Duisdorf, Bonn, Deutschland
| | - K-P Christians
- Anästhesie, Intensiv- und Schmerzmedizin, Gemeinschaftskrankenhaus Bonn, Bonn, Deutschland
| | - P Schablin
- Anästhesie, Intensiv- und Schmerzmedizin, Gemeinschaftskrankenhaus Bonn, Bonn, Deutschland
| | - M Mücke
- Zentrum für Seltene Erkrankungen Bonn (ZSEB), Universitätsklinikum Bonn, Bonn, Deutschland
| | - G J Molderings
- Institut für Humangenetik, Universitätsklinikum Bonn, Sigmund-Freud-Str. 25, 53127, Bonn, Deutschland.
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72
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Abstract
Mature neutrophils must be quickly removed from inflammatory sites to prevent tissue damage. Neutrophil removal is thought to be accomplished primarily through caspase-dependent apoptosis, which involves several genes of mitochondrial origin. However, mature neutrophils show reduced gene transcription and mitochondrial numbers. We predicted that neutrophils utilize other cell death mechanisms and investigated programmed cell death in human peripheral blood mononuclear cells (MNCs) and polymorphonuclear cells (PMNCs or neutrophil fractions). Unlike MNCs, PMNCs did not undergo DNA fragmentation and were not TUNEL positive, but expressed LC3-II, an autophagy marker. We also found that during differentiation, autophagy inhibitor 3-MA, and not caspase inhibitor zVAD-fmk, prevented segmentation of the nucleus, indicating that these cells undergo autophagy during maturation. Therefore, human neutrophils may undergo spontaneous autophagic cell death rather than apoptosis, during which autophagy may be essential for both maturation and death.
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Affiliation(s)
- Teruyuki Kajiume
- Mukainada Child Clinic, Hiroshima, Japan
- Department of Pediatrics, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
| | - Masao Kobayashi
- Department of Pediatrics, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
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Xu JJ, Smeets MF, Tan SY, Wall M, Purton LE, Walkley CR. Modeling human RNA spliceosome mutations in the mouse: not all mice were created equal. Exp Hematol 2018; 70:10-23. [PMID: 30408513 DOI: 10.1016/j.exphem.2018.11.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 10/26/2018] [Accepted: 11/01/2018] [Indexed: 01/23/2023]
Abstract
Myelodysplastic syndromes (MDS) and related myelodysplastic/myeloproliferative neoplasms (MDS/MPNs) are clonal stem cell disorders, primarily affecting patients over 65 years of age. Mapping of the MDS and MDS/MPN genome identified recurrent heterozygous mutations in the RNA splicing machinery, with the SF3B1, SRSF2, and U2AF1 genes being frequently mutated. To better understand how spliceosomal mutations contribute to MDS pathogenesis in vivo, numerous groups have sought to establish conditional murine models of SF3B1, SRSF2, and U2AF1 mutations. The high degree of conservation of hematopoiesis between mice and human and the well-established phenotyping and genetic modification approaches make murine models an effective tool with which to study how a gene mutation contributes to disease pathogenesis. The murine models of spliceosomal mutations described to date recapitulate human MDS or MDS/MPN to varying extents. Reasons for the differences in phenotypes reported between alleles of the same mutation are varied, but the nature of the genetic modification itself and subsequent analysis methods are important to consider. In this review, we summarize recently reported murine models of SF3B1, SRSF2, and U2AF1 mutations, with a particular focus on the genetically engineered modifications underlying the models and the experimental approaches applied.
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Affiliation(s)
- Jane Jialu Xu
- St. Vincent's Institute, Fitzroy, Victoria 3065, Australia; Department of Medicine, St. Vincent's Hospital, University of Melbourne, Fitzroy, Victoria 3065, Australia
| | - Monique F Smeets
- St. Vincent's Institute, Fitzroy, Victoria 3065, Australia; Department of Medicine, St. Vincent's Hospital, University of Melbourne, Fitzroy, Victoria 3065, Australia
| | - Shuh Ying Tan
- St. Vincent's Institute, Fitzroy, Victoria 3065, Australia; Department of Medicine, St. Vincent's Hospital, University of Melbourne, Fitzroy, Victoria 3065, Australia; Department of Hematology, St. Vincent's Hospital, Fitzroy, Victoria 3065, Australia
| | - Meaghan Wall
- St. Vincent's Institute, Fitzroy, Victoria 3065, Australia; Department of Medicine, St. Vincent's Hospital, University of Melbourne, Fitzroy, Victoria 3065, Australia; Victorian Cancer Cytogenetics Service, St. Vincent's Hospital, Fitzroy, Victoria 3065, Australia
| | - Louise E Purton
- St. Vincent's Institute, Fitzroy, Victoria 3065, Australia; Department of Medicine, St. Vincent's Hospital, University of Melbourne, Fitzroy, Victoria 3065, Australia
| | - Carl R Walkley
- St. Vincent's Institute, Fitzroy, Victoria 3065, Australia; Department of Medicine, St. Vincent's Hospital, University of Melbourne, Fitzroy, Victoria 3065, Australia; Mary MacKillop Institute for Health Research, Australian Catholic University, Melbourne, Victoria 3000, Australia.
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74
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Allen SJ, Chazot PL, Dixon CJ. Can H 2 -receptor upregulation and raised histamine explain an anaphylactoid reaction on cessation of ranitidine in a 19-year-old female? A case report. Br J Clin Pharmacol 2018; 84:1611-1616. [PMID: 29667234 PMCID: PMC6005605 DOI: 10.1111/bcp.13578] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 02/16/2018] [Accepted: 02/27/2018] [Indexed: 11/29/2022] Open
Abstract
The anaphylactoid reaction described follows cessation of ranitidine in a 19-year-old female with the disease cluster: mast cell activation syndrome, hypermobile Ehlers-Danlos syndrome and postural tachycardia syndrome. Anaphylaxis can give wide-ranging symptoms from rhinorrhoea and urticaria to tachycardia and system-wide, life-threatening, anaphylactic shock. Individuals with a disorder of mast cell activation can experience many such symptoms. H2 receptor antagonists, such as ranitidine, are commonly prescribed in this population. A mechanism for the reaction is proposed in the context of ranitidine, as an inverse agonist, causing upregulation of H2 histamine receptors and raised histamine levels due to enzyme induction. This effect, following extended and/or high antihistamine dosing, may have implications for other individuals with a disorder of mast cell activation, such as mastocytosis or mast cell activation syndrome. There are potential policy and patient guidance implications for primary and secondary care with respect to cessation of H2 antagonists.
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Affiliation(s)
- Susan J. Allen
- Pharmacy Practice, Leicester School of PharmacyDe Montfort UniversityLeicesterUK
| | - Paul L. Chazot
- Pharmacology, Department of BiosciencesDurham UniversityDurhamUK
| | - C. Jane Dixon
- Pharmacology, Leicester School of PharmacyDe Montfort UniversityLeicesterUK
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75
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Friesen C, Singh M, Singh V, Schurman JV. An observational study of headaches in children and adolescents with functional abdominal pain: Relationship to mucosal inflammation and gastrointestinal and somatic symptoms. Medicine (Baltimore) 2018; 97:e11395. [PMID: 30045261 PMCID: PMC6078717 DOI: 10.1097/md.0000000000011395] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Accepted: 06/12/2018] [Indexed: 01/28/2023] Open
Abstract
Headaches and abdominal pain are among the most common pediatric pain conditions. Mast cells have been implicated in the pathophysiology of migraines, as well as functional dyspepsia (FD) and irritable bowel syndrome (IBS). The primary aims of the current study were to assess headache prevalence in patients with FD and to assess the association between headaches and mucosal mast cells and eosinophils. An additional aim was to explore associations of headache with other symptoms.We conducted a cross-sectional retrospective chart review of 235 consecutive patients with chronic abdominal pain. All patients had completed a standardized questionnaire as part of their routine clinical evaluation. Both gastrointestinal and non-gastrointestinal somatic symptoms were included in the analysis. All patients diagnosed with FD had undergone upper endoscopy with biopsies obtained from the gastric antrum and duodenum and these specimens were utilized to assess eosinophil and mast cell densities, respectively.Overall, 86% of patients fulfilled Rome IV criteria for FD. Headache was reported by 73.8% of FD patients versus 45.2% of non-FD patients (P = .001). Duodenal mast cell densities were significantly increased in those reporting headaches. Headache was not associated with any specific gastrointestinal symptoms but was associated with a wide array of non-gastrointestinal symptoms including fatigue, dizziness, muscle pain, joint pain, and chest pain.Headaches are common in children and adolescents with abdominal pain and, utilizing Rome IV criteria, are specifically associated with FD. In patients with FD, headaches are associated with increased duodenal mast cell density and a variety of somatic symptoms, all of which are possibly the result of mast cell activation.
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Affiliation(s)
- Craig Friesen
- Division of Gastroenterology, Hepatology, and Nutrition
| | - Meenal Singh
- Division of Gastroenterology, Hepatology, and Nutrition
| | | | - Jennifer V. Schurman
- Division of Developmental and Behavioral Sciences, Children's Mercy Kansas City, Kansas City, MO
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76
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Palmér R, Mäenpää J, Jauhiainen A, Larsson B, Mo J, Russell M, Root J, Prothon S, Chialda L, Forte P, Egelrud T, Stenvall K, Gardiner P. Dipeptidyl Peptidase 1 Inhibitor AZD7986 Induces a Sustained, Exposure-Dependent Reduction in Neutrophil Elastase Activity in Healthy Subjects. Clin Pharmacol Ther 2018; 104:1155-1164. [PMID: 29484635 PMCID: PMC6282495 DOI: 10.1002/cpt.1053] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Revised: 02/16/2018] [Accepted: 02/19/2018] [Indexed: 11/30/2022]
Abstract
Neutrophil serine proteases (NSPs), such as neutrophil elastase (NE), are activated by dipeptidyl peptidase 1 (DPP1) during neutrophil maturation. High NSP levels can be detrimental, particularly in lung tissue, and inhibition of NSPs is therefore an interesting therapeutic opportunity in multiple lung diseases, including chronic obstructive pulmonary disease (COPD) and bronchiectasis. We conducted a randomized, placebo‐controlled, first‐in‐human study to assess the safety, tolerability, pharmacokinetics, and pharmacodynamics of single and multiple oral doses of the DPP1 inhibitor AZD7986 in healthy subjects. Pharmacokinetic and pharmacodynamic data were analyzed using nonlinear mixed effects modeling and showed that AZD7986 inhibits whole blood NE activity in an exposure‐dependent, indirect manner—consistent with in vitro and preclinical predictions. Several dose‐dependent, possibly DPP1‐related, nonserious skin findings were observed, but these were not considered to prevent further clinical development. Overall, the study results provided confidence to progress AZD7986 to phase II and supported selection of a clinically relevant dose.
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Affiliation(s)
- Robert Palmér
- Quantitative Clinical Pharmacology, Early Clinical Development, IMED Biotech Unit, AstraZeneca, Gothenburg, Sweden
| | - Jukka Mäenpää
- Patient Safety, Respiratory, Inflammation, Autoimmunity, Infections and Vaccines Therapeutic Area, AstraZeneca, Gothenburg, Sweden
| | - Alexandra Jauhiainen
- Early Clinical Biometrics, Early Clinical Development, IMED Biotech Unit, AstraZeneca, Gothenburg, Sweden
| | - Bengt Larsson
- RIA Translational Medicines Unit, Early Clinical Development, IMED Biotech Unit, AstraZeneca, Gothenburg, Sweden
| | - John Mo
- Translational Biology, Respiratory, Inflammation and Autoimmunity, IMED Biotech Unit, AstraZeneca, Gothenburg, Sweden
| | - Muir Russell
- Precision Medicine Laboratories, Precision Medicine and Genomics, IMED Biotech Unit, AstraZeneca, Cambridge, UK
| | - James Root
- Bioscience, Respiratory, Inflammation and Autoimmunity, IMED Biotech Unit, AstraZeneca, Gothenburg, Sweden
| | - Susanne Prothon
- Quantitative Clinical Pharmacology, Early Clinical Development, IMED Biotech Unit, AstraZeneca, Gothenburg, Sweden
| | - Ligia Chialda
- Parexel Early Phase Clinical Unit, Harrow, London, UK
| | - Pablo Forte
- Parexel Early Phase Clinical Unit, Harrow, London, UK
| | | | - Kristina Stenvall
- Respiratory, Inflammation and Autoimmunity, IMED Biotech Unit, AstraZeneca, Gothenburg, Sweden
| | - Philip Gardiner
- Quantitative Clinical Pharmacology, Early Clinical Development, IMED Biotech Unit, AstraZeneca, Gothenburg, Sweden
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Hettle R, Corbett M, Hinde S, Hodgson R, Jones-Diette J, Woolacott N, Palmer S. The assessment and appraisal of regenerative medicines and cell therapy products: an exploration of methods for review, economic evaluation and appraisal. Health Technol Assess 2018; 21:1-204. [PMID: 28244858 DOI: 10.3310/hta21070] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND The National Institute for Health and Care Excellence (NICE) commissioned a 'mock technology appraisal' to assess whether changes to its methods and processes are needed. This report presents the findings of independent research commissioned to inform this appraisal and the deliberations of a panel convened by NICE to evaluate the mock appraisal. METHODS Our research included reviews to identify issues, analysis methods and conceptual differences and the relevance of alternative decision frameworks, alongside the development of an exemplar case study of chimeric antigen receptor (CAR) T-cell therapy for treating acute lymphoblastic leukaemia. RESULTS An assessment of previous evaluations of regenerative medicines found that, although there were a number of evidential challenges, none was unique to regenerative medicines or was beyond the scope of existing methods used to conceptualise decision uncertainty. Regarding the clinical evidence for regenerative medicines, the issues were those associated with a limited evidence base but were not unique to regenerative medicines: small non-randomised studies, high variation in response and the intervention subject to continuing development. The relative treatment effects generated from single-arm trials are likely to be optimistic unless it is certain that the historical data have accurately estimated the efficacy of the control agent. Pivotal trials may use surrogate end points, which, on average, overestimate treatment effects. To reduce overall uncertainty, multivariate meta-analysis of all available data should be considered. Incorporating indirectly relevant but more reliable (more mature) data into the analysis can also be considered; such data may become available as a result of the evolving regulatory pathways being developed by the European Medicines Agency. For the exemplar case of CAR T-cell therapy, target product profiles (TPPs) were developed, which considered the 'curative' and 'bridging to stem-cell transplantation' treatment approaches separately. Within each TPP, three 'hypothetical' evidence sets (minimum, intermediate and mature) were generated to simulate the impact of alternative levels of precision and maturity in the clinical evidence. Subsequent assessments of cost-effectiveness were undertaken, employing the existing NICE reference case alongside additional analyses suggested within alternative frameworks. The additional exploratory analyses were undertaken to demonstrate how assessments of cost-effectiveness and uncertainty could be impacted by alternative managed entry agreements (MEAs), including price discounts, performance-related schemes and technology leasing. The panel deliberated on the range of TPPs, evidence sets and MEAs, commenting on the likely recommendations for each scenario. The panel discussed the challenges associated with the exemplar and regenerative medicines more broadly, focusing on the need for a robust quantification of the level of uncertainty in the cost-effective estimates and the potential value of MEAs in limiting the exposure of the NHS to high upfront costs and loss associated with a wrong decision. CONCLUSIONS It is to be expected that there will be a significant level of uncertainty in determining the clinical effectiveness of regenerative medicines and their long-term costs and benefits, but the existing methods available to estimate the implications of this uncertainty are sufficient. The use of risk sharing and MEAs between the NHS and manufacturers of regenerative medicines should be investigated further. FUNDING The National Institute for Health Research Health Technology Assessment programme.
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Affiliation(s)
- Robert Hettle
- Centre for Health Economics, University of York, York, UK
| | - Mark Corbett
- Centre for Reviews and Dissemination, University of York, York, UK
| | | | - Robert Hodgson
- Centre for Reviews and Dissemination, University of York, York, UK
| | | | - Nerys Woolacott
- Centre for Reviews and Dissemination, University of York, York, UK
| | - Stephen Palmer
- Centre for Health Economics, University of York, York, UK
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Lehner S, Ekhlasi-Hundrieser M, Detering C, Allerkamp H, Pfarrer C, von Depka Prondzinski M. A 12.3-kb Duplication Within the VWF Gene in Pigs Affected by Von Willebrand Disease Type 3. G3 (Bethesda) 2018; 8:577-85. [PMID: 29208651 DOI: 10.1534/g3.117.300432] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Von Willebrand Disease (VWD) type 3 is a serious and sometimes fatal hereditary bleeding disorder. In pigs, the disease has been known for decades, and affected animals are used as models for the human disease. Due to the recessive mode of inheritance of VWD type 3, severe bleeding is typically seen in homozygous individuals. We sequenced the complete porcine VWF (Von Willebrand Factor) complementary DNA (cDNA) and detected a tandem duplication of exons 17 and 18, causing a frameshift and a premature termination codon (p.Val814LeufsTer3) in the affected pig. Subsequent next generation sequencing on genomic DNA proved the existence of a 12.3-kb tandem duplication associated with VWD. This duplication putatively originates from porcine Short Interspersed Nuclear Elements (SINEs) located within VWF introns 16 and 18 with high identity. The premature termination truncates the VWF open reading frame by a large part, resulting in an almost entire loss of the mature peptide. It is therefore supposed to account for the severe VWD type 3. Our results further indicate the presence of strong, nonsense-mediated decay in VWF messenger RNA (mRNA) containing the duplication, which was supported by the almost complete absence of the complete VWF protein in immunohistochemistry analysis of the VWD-affected pig. In the past, differentiation of wild-type and heterozygous pigs in this VWD colony had to rely on clinical examinations and additional laboratory methods. The present study provides the basis to distinguish both genotypes by performing a rapid and simple genetic analysis.
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Bartlett R, Stokes L, Curtis SJ, Curtis BL, Sluyter R. Probenecid directly impairs activation of the canine P2X7 receptor. Nucleosides Nucleotides Nucleic Acids 2017; 36:736-744. [PMID: 29200326 DOI: 10.1080/15257770.2017.1391395] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The current study aimed to determine if probenecid could directly impair the canine P2X7 receptor, a ligand-gated cation channel activated by extracellular adenosine 5'-triphosphate (ATP). Patch clamp measurements demonstrated that probenecid impairs ATP-induced inward currents in HEK-293 cells expressing canine P2X7. Flow cytometric measurements of ethidium+ uptake into HEK-293 cells expressing canine P2X7 showed that probenecid impairs ATP-induced pore formation in a concentration-dependent manner, with a half maximal inhibitory concentration of 158 µM. Finally, ELISA measurements revealed that probenecid impairs ATP-induced interleukin-1β release in dog blood. In conclusion, this study reveals that probenecid can directly impair canine P2X7 activation.
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Affiliation(s)
- Rachael Bartlett
- a School of Biological Sciences, University of Wollongong , Wollongong , NSW , Australia.,b Centre for Medical and Molecular Bioscience, University of Wollongong , Wollongong , NSW , Australia.,c Illawarra Health and Medical Research Institute , Wollongong , NSW , Australia
| | - Leanne Stokes
- d School of Pharmacy, University of East Anglia , Norwich , United Kingdom
| | - Stephen J Curtis
- e Albion Park Veterinary Hospital , Albion Park , NSW , Australia
| | - Belinda L Curtis
- e Albion Park Veterinary Hospital , Albion Park , NSW , Australia
| | - Ronald Sluyter
- a School of Biological Sciences, University of Wollongong , Wollongong , NSW , Australia.,b Centre for Medical and Molecular Bioscience, University of Wollongong , Wollongong , NSW , Australia.,c Illawarra Health and Medical Research Institute , Wollongong , NSW , Australia
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Tissot J, Bardyn M, Sonego G, Abonnenc M, Prudent M. The storage lesions: From past to future. Transfus Clin Biol 2017; 24:277-84. [DOI: 10.1016/j.tracli.2017.05.012] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Accepted: 05/30/2017] [Indexed: 12/18/2022]
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Michiels JJ. Aspirin cures erythromelalgia and cerebrovascular disturbances in JAK2-thrombocythemia through platelet-cycloxygenase inhibition. World J Hematol 2017; 6:32-54. [DOI: 10.5315/wjh.v6.i3.32] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 04/27/2017] [Accepted: 07/17/2017] [Indexed: 02/05/2023] Open
Abstract
Hypersensitive (sticky) platelets in JAK2-mutated essential thrombocythemia (ET) and polycythemia vera (PV) with thrombocythemia spontaneously activate at high shear in arterioles, secrete their inflammatory prostaglandin endoperoxides and induce platelet-mediated arteriolar fibromuscular intimal proliferation. Constitutively activated JAK2 mutated hypersensitive (sticky) platelets spontaneously aggregate at high shear in the endarteriolar circulation as the cause of aspirin responsive erythromelalgia and platelet arterial thrombophilia in JAK2-mutated thrombocythemia patients. Increased production of prostglandin endoperoxides E2 and thromboxane A2 released by activated sticky platelets in arterioles account for redness warmth and swelling of erythromelalgia and platelet derived growth factor can readily explain the arteriolar fibromuscular intimal proliferation. Von Willebrand factor (VWF) platelet rich occlusive thrombi in arterioles are the underlying pathobiology of erythromelalgic acrocyanosis, migraine-like transient cerebral attacks (MIAs), acute coronary syndromes and abdominal microvscular ischemic events. Irreversible platelet cyco-oxygenase inhibition by aspirin cures the erythromelalgia, MIAs and microvascular events, corrects shortened platelet survival to normal, and returns increased plasma levels of beta-TG, platelet factor 4, thrombomoduline and urinary thromboxane B2 excretion to normal in symptomatic JAK2-thrombocythemia patients. In vivo activation of sticky platelets and VWF-platelet aggregates account for endothelial cell activation to secrete thrombomoduline and sVCAM followed by occlusion of arterioles by VWF-rich platelet thrombi in patients with erythromelalgic thrombotic thrombocythemia (ETT) in ET and PV patients. ETT is complicated by spontaneous hemorrhagic thrombocythemia (HT) or paradoxical ETT/HT due to acquired von Willebrand disease type 2A at platelet counts above 1000 × 109/L and disappears by cytoreduction of platelets to normal (< 400 × 109/L).
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Talepoor AG, Kalani M, Dahaghani AS, Doroudchi M. Hydrogen Peroxide and Lipopolysaccharide Differentially Affect the Expression of MicroRNAs 10a, 33a, 21, 221 in Endothelial Cells Before and After Coculture With Monocytes. Int J Toxicol 2017; 36:133-141. [PMID: 28403739 DOI: 10.1177/1091581817695270] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Inflammation and oxidative stress are important risk factors affecting various cells in the formation of atherosclerosis. MicroRNAs (miRs) are regulators of inflammation and atherogenesis. The expressions of endothelial cell (EC)-specific miR-10a and miR-21 and monocyte-specific miR-33a and miR-221 were investigated using coculture of the ECs and monocytes upon exposure to H2O2 as an oxidative stressor, and endotoxin/lipopolysaccharide (LPS) as a microbial stressor. Human umbilical endothelial cells (HUVECs) and peripheral blood mononuclear cells (or monocytes) were cocultured in M199 complete medium and were incubated with LPS (20 ng/mL) or H2O2 (1%) for 8 hours at 37°C. The HUVECs and monocytes were then separated from the cellular mix using a magnetic bead negative selection technique. The relative expression of miRs was determined by real-time polymerase chain reaction. In both cell types, H2O2 induced miR10a ( P = 0.05) and LPS induced miR21 ( P = 0.0003) compared to the untreated controls. Coculture increased miR-10a and miR-21 expression in monocytes ( P = 0.0008 and <0.0001); however when cultured alone, HUVECs expressed higher levels of miR-10a and miR-21 ( P < 0.0001 and <0.0001). Coculture decreased the expression of miR-33a in monocytes ( P < 0.0001) while increasing miR221 in HUVECs and monocytes ( P < 0.0001 and <0.0001). The expression pattern of miRs in HUVECs and monocytes changes in the coculture compared to culturing alone in response to oxidative and microbial toxic compounds. Moreover, different cellular stressors induce different athero-miRs, which may affect the course of inflammation.
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Affiliation(s)
- Atefe Ghamar Talepoor
- 1 Memory T Cell Laboratory, Department of Immunology, School of Medicine, Shiraz University of Medical Science, Shiraz, Iran
| | - Mehdi Kalani
- 1 Memory T Cell Laboratory, Department of Immunology, School of Medicine, Shiraz University of Medical Science, Shiraz, Iran
| | - Alamtaj Samsami Dahaghani
- 2 Department of Obstetrics and Gynecology, School of Medicine, Shiraz University of Medical Science, Shiraz, Iran
| | - Mehrnoosh Doroudchi
- 1 Memory T Cell Laboratory, Department of Immunology, School of Medicine, Shiraz University of Medical Science, Shiraz, Iran
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Abstract
Paul Ehrlich's techniques, published between 1879 and 1880, for staining blood films using coal tar dyes, and his method of differential blood cell counting, ended years of speculation regarding the classification of white cells. Acidic and basic dyes had allowed him to recognize eosinophil and basophil granules, respectively, work that was a direct continuation of his discovery of the tissue mast cell described in his doctoral thesis. Ehrlich went on to develop neutral dyes that identified epsilon granules in neutrophils ("cells with polymorphous nuclei"). He also speculated, for the most part correctly, on the formation, function, and fate of blood neutrophils and eosinophils. Before Ehrlich, a number of important observations had been made on white cells and their role in health and disease. Among the most notable were William Hewson's studies of blood and lymph; the early descriptions of leukemia by Alfred Donné, John Hughes Bennett, Rudolf Virchow, and others; as well as seminal observations on inflammation by William Addison, Friedrich von Recklinghausen, and Julius Cohnheim. Eosinophils were almost certainly recognized previously by others. In 1846, Thomas Wharton Jones (1808-1891) described "granule blood-cells" in several species including humans. The term "granule cell" had also been used by Julius Vogel (1814-1880), who had previously observed similar cells in inflammatory exudates. Vogel, in turn, was aware of the work of Gottlieb Gluge (1812-1898), who had observed "compound inflammatory globules" in pus and serum that resembled eosinophils. Almost 20 years before Ehrlich developed his staining methods, Max Johann Schultze (1825-1874) performed functional experiments on fine and coarse granular cells using a warm stage microscopic technique and showed they had amoeboid movement and phagocytic abilities. Despite these earlier observations, it was Ehrlich's use of stains that heralded the modern era of studies of leukocyte biology and pathology.
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84
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Michiels JJ, De Raeve H, Valster F, Potters V, Kim Y, Kim M. Extension of 2016 World Health Organization (WHO) Classification into a New Set of Clinical, Laboratory, Molecular, and Pathological Criteria for the Diagnosis of Myeloproliferative Neoplasms: From Dameshek to Vainchenker, Green, and Kralovics. EMJ 2017. [DOI: 10.33590/emj/10314481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Improved Clinical, Laboratory, Molecular, and Pathological (CLMP) 2017 criteria for myeloproliferative neoplasms (MPN) define the JAK2V617F trilinear MPNs as a broad continuum of essential thrombocythaemia (ET), polycythaemia vera (PV), masked PV, and post-ET or post-PV myelofibrosis (MF). Normal versus increased erythrocyte counts (5.8×1012/L) on top of bone marrow histology separate JAK2V617F ET and prodromal PV from early and classical PV. Bone marrow histology of the JAK2V617F trilinear MPNs show variable degrees of normocellular megakaryocytic, erythrocytic megakaryocytic and erythrocytic megakaryocytic granulocytic (EMG) myeloproliferation, peripheral cytoses, and splenomegaly related to JAK2V617F allele burden. MPL515 thrombocythaemia displays predominantly normocellular megakaryocytic proliferation. CALR thrombocythaemia intially presents with megakaryocytic followed by dual granulocytic and megakaryocytic myeloproliferation without features of PV. The megakaryocytes are large, mature, and pleomorphic with hyperlobulated nuclei in JAK2V617F ET and prodromal, classical, and masked PV. The megakaryocytes are large to giant with hyperlobulated staghorn-like nuclei in MPL515 thrombocythaemia. The megakaryocytes are densely clustered, large, and immature dysmorphic with bulky (bulbous) hyperchromatic nuclei in CALR thrombocythaemia and MF.
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Affiliation(s)
- Jan Jacques Michiels
- International Hematology, Blood and Coagulation Research Center, Goodheart Institute and Foundation in Nature Medicine, Freedom in Science and Education Erasmus Tower, Rotterdam, Netherlands; International Collaboration and Academic Research on Myeloproliferative Neoplasms: ICAR.MPN, Rotterdam, Netherlands; Department of Hematology and Pathology, BRAVIS Hospital, Bergen op Zoom, Netherlands
| | - Hendrik De Raeve
- Department of Pathology, OLV Hospital Aalst and University Hospital Brussels, Brussels, Belgium
| | - Francisca Valster
- Department of Hematology and Pathology, BRAVIS Hospital, Bergen op Zoom, Netherlands
| | - Vincent Potters
- Department of Hematology and Pathology, BRAVIS Hospital, Bergen op Zoom, Netherlands
| | - Yonggoo Kim
- Department of Laboratory Medicine, College of Medicine, the Catholic University of Korea, Seoul, Korea; Catholic Genetic Laboratory Center, Seoul St. Mary’s Hospital, College of Medicine, the Catholic University of Korea, Seoul, Korea
| | - Myungshin Kim
- Department of Laboratory Medicine, College of Medicine, the Catholic University of Korea, Seoul, Korea; Catholic Genetic Laboratory Center, Seoul St. Mary’s Hospital, College of Medicine, the Catholic University of Korea, Seoul, Korea
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85
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Lagerquist O, Poseluzny D, Werstiuk G, Slomp J, Maier M, Nahirniak S, Clarke G. The cost of transfusing a unit of red blood cells: a costing model for Canadian hospital use. ACTA ACUST UNITED AC 2017. [DOI: 10.1111/voxs.12355] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- O. Lagerquist
- Northern Alberta Institute of Technology; Edmonton AB Canada
| | | | - G. Werstiuk
- Northern Alberta Institute of Technology; Edmonton AB Canada
| | - J. Slomp
- Northern Alberta Institute of Technology; Edmonton AB Canada
| | - M. Maier
- University of Alberta; Edmonton AB Canada
| | - S. Nahirniak
- Alberta Health Services; Edmonton AB Canada
- University of Alberta; Edmonton AB Canada
| | - G. Clarke
- Alberta Health Services; Edmonton AB Canada
- University of Alberta; Edmonton AB Canada
- Canadian Blood Services
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Ekpenyong AE, Toepfner N, Fiddler C, Herbig M, Li W, Cojoc G, Summers C, Guck J, Chilvers ER. Mechanical deformation induces depolarization of neutrophils. Sci Adv 2017; 3:e1602536. [PMID: 28630905 PMCID: PMC5470826 DOI: 10.1126/sciadv.1602536] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The transition of neutrophils from a resting state to a primed state is an essential requirement for their function as competent immune cells. This transition can be caused not only by chemical signals but also by mechanical perturbation. After cessation of either, these cells gradually revert to a quiescent state over 40 to 120 min. We use two biophysical tools, an optical stretcher and a novel microcirculation mimetic, to effect physiologically relevant mechanical deformations of single nonadherent human neutrophils. We establish quantitative morphological analysis and mechanical phenotyping as label-free markers of neutrophil priming. We show that continued mechanical deformation of primed cells can cause active depolarization, which occurs two orders of magnitude faster than by spontaneous depriming. This work provides a cellular-level mechanism that potentially explains recent clinical studies demonstrating the potential importance, and physiological role, of neutrophil depriming in vivo and the pathophysiological implications when this deactivation is impaired, especially in disorders such as acute lung injury.
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Affiliation(s)
- Andrew E. Ekpenyong
- Cavendish Laboratory, Department of Physics, University of Cambridge, Cambridge CB3 0HE, UK
- Biotechnology Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, 01307 Dresden, Germany
- Department of Physics, Creighton University, Omaha, NE 68178, USA
| | - Nicole Toepfner
- Klinik und Poliklinik für Kinder-und Jugendmedizin, Universitätsklinikum Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
- Department of Medicine, Addenbrooke’s and Papworth Hospitals, University of Cambridge School of Clinical Medicine, Cambridge CB2 0QQ, UK
| | - Christine Fiddler
- Department of Medicine, Addenbrooke’s and Papworth Hospitals, University of Cambridge School of Clinical Medicine, Cambridge CB2 0QQ, UK
| | - Maik Herbig
- Biotechnology Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, 01307 Dresden, Germany
| | - Wenhong Li
- Biotechnology Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, 01307 Dresden, Germany
| | - Gheorghe Cojoc
- Biotechnology Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, 01307 Dresden, Germany
| | - Charlotte Summers
- Department of Medicine, Addenbrooke’s and Papworth Hospitals, University of Cambridge School of Clinical Medicine, Cambridge CB2 0QQ, UK
| | - Jochen Guck
- Cavendish Laboratory, Department of Physics, University of Cambridge, Cambridge CB3 0HE, UK
- Biotechnology Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, 01307 Dresden, Germany
- Corresponding author.
| | - Edwin R. Chilvers
- Department of Medicine, Addenbrooke’s and Papworth Hospitals, University of Cambridge School of Clinical Medicine, Cambridge CB2 0QQ, UK
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Zhao H, Gulesserian S, Malinao MC, Ganesan SK, Song J, Chang MS, Williams MM, Zeng Z, Mattie M, Mendelsohn BA, Stover DR, Doñate F. A Potential Mechanism for ADC-Induced Neutropenia: Role of Neutrophils in Their Own Demise. Mol Cancer Ther 2017; 16:1866-1876. [DOI: 10.1158/1535-7163.mct-17-0133] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Revised: 05/03/2017] [Accepted: 05/05/2017] [Indexed: 11/16/2022]
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Małecki R, Gacka M, Fiodorenko-Dumas Ż, Dumas I, Kwiatkowski J, Adamiec R, Kuliszkiewicz-Janus M. Peripheral circulatory disorders in essential thrombocythemia. Microvasc Res 2018; 116:15-9. [PMID: 28495449 DOI: 10.1016/j.mvr.2017.05.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Revised: 05/05/2017] [Accepted: 05/06/2017] [Indexed: 12/27/2022]
Abstract
A significant number of patients with essential thrombocythemia (ET) complain of symptoms including distal parts of the extremities (e.g., paresthesias or Raynaud's phenomenon). The aim of the present study was to examine peripheral circulation in the upper extremities of individuals with ET. The study included 45 ET patients and 30 control subjects. All participants were subjected to thermography, photoplethysmography, impedance plethysmography, and applanation tonometry pulse wave analysis. The patients with ET differed significantly from the control subjects in terms of 3rd finger skin temperature (mean 31.04 vs. 32.45°C), skin temperature gradient (mean 1.82 vs. 0.11°C), photoplethysmographic amplitude (median 0.25 vs. 0.74%), and pulse waveform in the radial artery (more frequent occurrence of type B waveform). Pulse wave parameters correlated with the skin temperature gradient. The study findings imply the altered regulation of peripheral circulation in ET, including a decreased flow and an increased resistance.
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90
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Wiśniewska-Chudy E, Szylberg Ł, Dworacki G, Mizera-Nyczak E, Marszałek A. pSTAT5 and ERK exhibit different expression in myeloproliferative neoplasms. Oncol Rep 2017; 37:2295-2307. [DOI: 10.3892/or.2017.5476] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Accepted: 12/02/2016] [Indexed: 11/06/2022] Open
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Abstract
The P2X7 receptor is a trimeric ion channel gated by extracellular adenosine 5'-triphosphate. The receptor is present on an increasing number of different cells types including stem, blood, glial, neural, ocular, bone, dental, exocrine, endothelial, muscle, renal and skin cells. The P2X7 receptor induces various downstream events in a cell-specific manner, including inflammatory molecule release, cell proliferation and death, metabolic events, and phagocytosis. As such this receptor plays important roles in heath and disease. Increasing knowledge about the P2X7 receptor has been gained from studies of, but not limited to, protein chemistry including cloning, site-directed mutagenesis, crystal structures and atomic modeling, as well as from studies of primary tissues and transgenic mice. This chapter focuses on the P2X7 receptor itself. This includes the P2RX7 gene and its products including splice and polymorphic variants. This chapter also reviews modulators of P2X7 receptor activation and inhibition, as well as the transcriptional regulation of the P2RX7 gene via its promoter and enhancer regions, and by microRNA and long-coding RNA. Furthermore, this chapter discusses the post-translational modification of the P2X7 receptor by N-linked glycosylation, adenosine 5'-diphosphate ribosylation and palmitoylation. Finally, this chapter reviews interaction partners of the P2X7 receptor, and its cellular localisation and trafficking within cells.
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Affiliation(s)
- Ronald Sluyter
- School of Biological Sciences, University of Wollongong, Wollongong, NSW, 2522, Australia. .,Centre for Medical and Molecular Bioscience, University of Wollongong, Wollongong, NSW, 2522, Australia. .,Illawarra Health and Medical Research Institute, Wollongong, NSW, 2522, Australia.
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92
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Michiels JJ. Aspirin responsive erythromelalgia in JAK2-thrombocythemia and incurable inherited erythrothermalgia in neuropathic Nav1.7 sodium channelopathy: from Mitchell 1878 to Michiels 2017. Expert Opin Orphan Drugs 2016. [DOI: 10.1080/21678707.2017.1270822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Jan Jacques Michiels
- Department of Hematology & Coagulation, Academic Hospital Dijkzigt and Erasmus University, Rotterdam, The Netherlands
- Department of Blood and Coagulation Disorders, University Hospital Antwerp, Edegem, Belgium
- Blood, Coagulation and Vascular Medicine Research Center, Goodheart Institute & Foundation in Nature Medicine & Health, Freedom of Science and Education, European Free University, Erasmus Tower, Rotterdam
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Afrin LB, Self S, Menk J, Lazarchick J. Characterization of Mast Cell Activation Syndrome. Am J Med Sci 2016; 353:207-215. [PMID: 28262205 DOI: 10.1016/j.amjms.2016.12.013] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Revised: 10/30/2016] [Accepted: 12/08/2016] [Indexed: 01/27/2023]
Abstract
BACKGROUND Mast cell activation syndrome (MCAS), a recently recognized nonneoplastic mast cell disease driving chronic multisystem inflammation and allergy, appears prevalent and thus important. We report the first systematic characterization of a large MCAS population. METHOD Demographics, comorbidities, symptoms, family histories, physical examination and laboratory findings were reviewed in 298 retrospective and 115 prospective patients with MCAS. Blood samples from prospective subjects were examined by flow cytometry for clonal mast cell disease and tested for cytokines potentially driving the monocytosis frequent in MCAS. RESULTS Demographically, white females dominated. Median ages at symptom onset and diagnosis were 9 and 49 years, respectively (range: 0-88 and 16-92, respectively) and median time from symptom onset to diagnosis was 30 years (range: 1-85). Median numbers of comorbidities, symptoms, and family medical issues were 11, 20, and 4, respectively (range: 1-66, 2-84, and 0-33, respectively). Gastroesophageal reflux, fatigue and dermatographism were the most common comorbidity, symptom and examination finding. Abnormalities in routine laboratories were common and diverse but typically modest. The most useful diagnostic markers were heparin, prostaglandin D2, histamine and chromogranin A. Flow cytometric and cytokine assessments were unhelpful. CONCLUSIONS Our study highlights MCAS׳s morbidity burden and challenging heterogeneity. Recognition is important given good survival and treatment prospects.
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Affiliation(s)
- Lawrence B Afrin
- Division of Hematology, Oncology and Transplantation, University of Minnesota (UMN), Minneapolis, Minnesota.
| | - Sally Self
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, South Carolina
| | - Jeremiah Menk
- Clinical and Translational Science Institute (CTSI), University of Minnesota, Minneapolis, Minnesota
| | - John Lazarchick
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, South Carolina
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94
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Michiels JJ, Batorova A, Prigancova T, Smejkal P, Penka M, Vangenechten I, Gadisseur A. Changing insights in the diagnosis and classification of autosomal recessive and dominant von Willebrand diseases 1980-2015. World J Hematol 2016; 5:61-74. [DOI: 10.5315/wjh.v5.i3.61] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Accepted: 04/18/2016] [Indexed: 02/05/2023] Open
Abstract
The European Clinical Laboratory and Molecular (ECLM) criteria define 10 distinct Willebrand diseases (VWD): recessive type 3, severe 1, 2C and 2N; dominant VWD type 1 secretion/clearance defect, 2A, 2B, 2E, 2M and 2D; and mild type 1 VWD (usually carriers of recessive VWD). Recessive severe 1 and 2C VWD are characterized by secretion and multimerization defects caused by mutations in the D1-D2 domain. Recessive 2N VWD is a mild hemophilia due to D’-FVIII-von Willebrand factor (VWF) binding site mutations. Dominant 2E VWD caused by heterozygous missense mutations in the D3 domain is featured by a secretion-clearance-multimerization VWF defect. Dominant VWD type 2M due to loss of function mutations in the A1 domain is characterized by decreased ristocetin-induced platelet aggregation and VWF:RCo, normal VWF multimers and VWF:CB, a poor response of VWF:RCo and good response of VWF:CB to desmopressin (DDAVP). Dominant VWD type 2A induced by heterozygous mutations in the A2 domain results in hypersensitivity of VWF for proteolysis by ADAMTS13 into VWF degradation products, resulting in loss of large VWF multimers with triplet structure of each individual VWF band. Dominant VWD type 2B due to a gain of function mutation in the A1 domain is featured by spontaneous interaction between platelet glycoprotein Ib (GPIb) and mutated VWF A1 followed by increased proteolysis with loss of large VWF multimers and presence of each VWF band. A new category of dominant VWD type 1 secretion or clearance defect due to mutations in the D3 domain or D4-C1-C5 domains consists of two groups: Those with normal or smeary pattern of VWF multimers.
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95
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Afrin LB. Mast cell activation disease and the modern epidemic of chronic inflammatory disease. Transl Res 2016; 174:33-59. [PMID: 26850903 DOI: 10.1016/j.trsl.2016.01.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2015] [Revised: 01/07/2016] [Accepted: 01/08/2016] [Indexed: 12/18/2022]
Abstract
A large and growing portion of the human population, especially in developed countries, suffers 1 or more chronic, often quite burdensome ailments which either are overtly inflammatory in nature or are suspected to be of inflammatory origin, but for which investigations to date have failed to identify specific causes, let alone unifying mechanisms underlying the multiple such ailments that often afflict such patients. Relatively recently described as a non-neoplastic cousin of the rare hematologic disease mastocytosis, mast cell (MC) activation syndrome-suspected to be of greatly heterogeneous, complex acquired clonality in many cases-is a potential underlying/unifying explanation for a diverse assortment of inflammatory ailments. A brief review of MC biology and how aberrant primary MC activation might lead to such a vast range of illness is presented.
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96
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Molderings GJ. Transgenerational transmission of systemic mast cell activation disease-genetic and epigenetic features. Transl Res 2016; 174:86-97. [PMID: 26880691 DOI: 10.1016/j.trsl.2016.01.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Revised: 01/02/2016] [Accepted: 01/04/2016] [Indexed: 02/08/2023]
Abstract
Systemic mast cell activation disease (MCAD) comprises disorders characterized by an enhanced release of mast cell mediators accompanied by a varying accumulation of dysfunctional mast cells. Within the last years, evidence has been presented that MCAD is a multifactorial polygenic determined disease with the KIT(D816V) mutation and its induced functional consequences considered as special case. The respective genes encode proteins for various signaling pathways, epigenetic regulators, the RNA splicing machinery, and transcription factors. Transgenerational transmission of MCAD appears to be quite common. The basics of the molecular mechanisms underlying predisposition of the disease, that is, somatic and germline mutations and the contribution of epigenetic processes have become identifiable. The aim of the present review is to present and discuss available genetic, epigenetic and epidemiological findings, and to present a model of MCAD pathogenesis.
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Affiliation(s)
- Gerhard J Molderings
- Institute of Human Genetics, University Hospital of Bonn, Sigmund-Freud-Strasse 25, D-53127 Bonn, Germany.
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97
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Kim Y, Park J, Jo I, Lee GD, Kim J, Kwon A, Choi H, Jang W, Chae H, Han K, Eom KS, Cho BS, Lee SE, Yang J, Shin SH, Kim H, Ko YH, Park H, Jin JY, Lee S, Jekarl DW, Yahng SA, Kim M. Genetic-pathologic characterization of myeloproliferative neoplasms. Exp Mol Med 2016; 48:e247. [PMID: 27444979 PMCID: PMC4973314 DOI: 10.1038/emm.2016.55] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Revised: 02/21/2016] [Accepted: 02/22/2016] [Indexed: 12/14/2022] Open
Abstract
Myeloproliferative neoplasms (MPNs) are clonal hematopoietic stem cell disorders characterized by the proliferation of one or more myeloid lineages. The current study demonstrates that three driver mutations were detected in 82.6% of 407 MPNs with a mutation distribution of JAK2 in 275 (67.6%), CALR in 55 (13.5%) and MPL in 6 (1.5%). The mutations were mutually exclusive in principle except in one patient with both CALR and MPL mutations. The driver mutation directed the pathologic features of MPNs, including lineage hyperplasia, laboratory findings and clinical presentation. JAK2-mutated MPN showed erythroid, granulocytic and/or megakaryocytic hyperplasia whereas CALR- and MPL-mutated MPNs displayed granulocytic and/or megakaryocytic hyperplasia. The lineage hyperplasia was closely associated with a higher mutant allele burden and peripheral cytosis. These findings corroborated that the lineage hyperplasia consisted of clonal proliferation of each hematopoietic lineage acquiring driver mutations. Our study has also demonstrated that bone marrow (BM) fibrosis was associated with disease progression. Patients with overt fibrosis (grade ⩾2) presented an increased mutant allele burden (P<0.001), an increase in chromosomal abnormalities (P<0.001) and a poor prognosis (P<0.001). Moreover, among patients with overt fibrosis, all patients with wild-type JAK2/CALR/MPL (triple-negative) showed genomic alterations by genome-wide microarray study and revealed the poorest overall survival, followed by JAK2-mutated MPNs. The genetic–pathologic characteristics provided the information for understanding disease pathogenesis and the progression of MPNs. The prognostic significance of the driver mutation and BM fibrosis suggests the necessity of a prospective therapeutic strategy to improve the clinical outcome.
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Affiliation(s)
- Yonggoo Kim
- Department of Laboratory Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Catholic Genetic Laboratory Center, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Joonhong Park
- Department of Laboratory Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Catholic Genetic Laboratory Center, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Irene Jo
- Department of Laboratory Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Catholic Genetic Laboratory Center, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Gun Dong Lee
- Catholic Genetic Laboratory Center, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Jiyeon Kim
- Catholic Genetic Laboratory Center, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Ahlm Kwon
- Catholic Genetic Laboratory Center, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Hayoung Choi
- Catholic Genetic Laboratory Center, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Woori Jang
- Department of Laboratory Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Catholic Genetic Laboratory Center, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Hyojin Chae
- Department of Laboratory Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Catholic Genetic Laboratory Center, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Kyungja Han
- Department of Laboratory Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Ki-Seong Eom
- Division of Hematology, Department of Internal Medicine, Catholic Blood and Marrow Transplantation Center, Leukemia Research Institute, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Byung-Sik Cho
- Division of Hematology, Department of Internal Medicine, Catholic Blood and Marrow Transplantation Center, Leukemia Research Institute, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Sung-Eun Lee
- Division of Hematology, Department of Internal Medicine, Catholic Blood and Marrow Transplantation Center, Leukemia Research Institute, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Jinyoung Yang
- Department of Laboratory Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Seung-Hwan Shin
- Department of Internal Medicine, Yeouido St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Hyunjung Kim
- Department of Laboratory Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Yoon Ho Ko
- Department of Internal Medicine, Uijeongbu St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Haeil Park
- Department of Laboratory Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Jong Youl Jin
- Division of Hematology/Oncology, Department of Internal Medicine, Bucheon St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Seungok Lee
- Department of Laboratory Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Catholic Genetic Laboratory Center, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Dong Wook Jekarl
- Department of Laboratory Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Catholic Genetic Laboratory Center, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Seung-Ah Yahng
- Department of Hematology, Incheon St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Myungshin Kim
- Department of Laboratory Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Catholic Genetic Laboratory Center, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
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98
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Michiels JJ, Smejkal P, Penka M, Batorova A, Pricangova T, Budde U, Vangenechten I, Gadisseur A. Diagnostic Differentiation of von Willebrand Disease Types 1 and 2 by von Willebrand Factor Multimer Analysis and DDAVP Challenge Test. Clin Appl Thromb Hemost 2016; 23:518-531. [PMID: 27443694 DOI: 10.1177/1076029616647157] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The European Clinical Laboratory and Molecular (ECLM) classification of von Willebrand disease (vWD) is based on the splitting approach which uses sensitive and specific von Willebrand factor (vWF) assays with regard to the updated molecular data on structure and function of vWF gene and protein defects. A complete set of FVIII:C and vWF ristocetine cofactor, collagen binding, and antigen, vWF multimeric analysis in low- and medium-resolution gels, and responses to desmopressin (DDAVP) of FVIII:C and vWF parameters are mandatory. The ECLM classification distinguishes recessive types 1 and 3 vWD from recessive vWD 2C due to mutations in the D1 and D2 domains and vWD 2N due to mutations in the D'-FVIII-binding domain of vWF. The ECLM classification differentiates between mild vWD type 1 with variable penetrance of bleedings from symptomatic dominant type 1 vWD secretion defect and/or clearance defect with normal vWF multimers versus vWD 1M and 2M with normal or smeary vWF multimers in low- and medium-resolution gels. High-quality multimeric analysis of vWF in medium-resolution gels based on a DDAVP challenge test clearly delineates and distinguishes each of the dominant type 2 vWDs 1/2E, 2M, 2B, 2A, and 2D caused by vWF gene mutations in the D3 multimerization domain, loss or gain-of-function mutations in the glycoprotein Ib receptor A1 domain, gene mutations in the A2 proteolytic domain, and the C-terminal dimerization domain, respectively.
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Affiliation(s)
- Jan Jacques Michiels
- 1 Goodheart Institute in Nature Medicine & Health, Blood Coagulation and Vascular Medicine Center, Rotterdam, The Netherlands.,2 Hemostasis Research Unit, Department of Hematology, Antwerp University Hospital, Belgium
| | - Petr Smejkal
- 3 Department of Clinical Hematology, University Hospital, Masaryk University, Brno, Czech Republic.,4 Faculty of Medicine, Department of Laboratory Methods, Masaryk University, Brno, Czech Republic
| | - Miroslav Penka
- 3 Department of Clinical Hematology, University Hospital, Masaryk University, Brno, Czech Republic.,4 Faculty of Medicine, Department of Laboratory Methods, Masaryk University, Brno, Czech Republic
| | - Angelika Batorova
- 5 Department of Hemostasis and Thrombosis, National Hemophilia Center, Medical School of Comenius University, Bratislava, Slovakia
| | - Tatiana Pricangova
- 5 Department of Hemostasis and Thrombosis, National Hemophilia Center, Medical School of Comenius University, Bratislava, Slovakia
| | - Ulrich Budde
- 6 Central Laboratory, Asklepios Kliniken, Hamburg, Germany
| | - Inge Vangenechten
- 2 Hemostasis Research Unit, Department of Hematology, Antwerp University Hospital, Belgium.,8 Hemostasis Research Unit, Antwerp University Hospital, Antwerp, Belgium
| | - Alain Gadisseur
- 2 Hemostasis Research Unit, Department of Hematology, Antwerp University Hospital, Belgium.,7 Department of Hematology, Antwerp University Hospital, Antwerp, Belgium.,8 Hemostasis Research Unit, Antwerp University Hospital, Antwerp, Belgium
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99
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Simpson G. Menstrual anaphylactoid reactions and presumed systemic mast cell activation syndrome. Intern Med J 2016; 46:858-9. [PMID: 27405897 DOI: 10.1111/imj.13077] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Revised: 12/23/2015] [Accepted: 01/01/2016] [Indexed: 10/21/2022]
Affiliation(s)
- G Simpson
- Department of Thoracic Medicine, The Cairns Hospital, Cairns, Queensland, Australia
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100
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Gardiner P, Wikell C, Clifton S, Shearer J, Benjamin A, Peters SA. Neutrophil maturation rate determines the effects of dipeptidyl peptidase 1 inhibition on neutrophil serine protease activity. Br J Pharmacol 2016; 173:2390-401. [PMID: 27186823 PMCID: PMC4945769 DOI: 10.1111/bph.13515] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Revised: 04/01/2016] [Accepted: 04/20/2016] [Indexed: 12/31/2022] Open
Abstract
Background and Purpose Neutrophil serine proteases (NSPs) are activated by dipeptidyl peptidase 1 (DPP1) during neutrophil maturation. The effects of neutrophil turnover rate on NSP activity following DPP1 inhibition was studied in a rat pharmacokinetic/pharmacodynamic model. Experimental Approach Rats were treated with a DPP1 inhibitor twice daily for up to 14 days; NSP activity was measured in onset or recovery studies, and an indirect response model was fitted to the data to estimate the turnover rate of the response. Key Results Maximum NSP inhibition was achieved after 8 days of treatment and a reduction of around 75% NSP activity was achieved at 75% in vitro DPP1 inhibition. Both the rate of inhibition and recovery of NSP activity were consistent with a neutrophil turnover rate of between 4–6 days. Using human neutrophil turnover rate, it is predicted that maximum NSP inhibition following DPP1 inhibition takes around 20 days in human. Conclusions and Implications Following inhibition of DPP1 in the rat, the NSP activity was determined by the amount of DPP1 inhibition and the turnover of neutrophils and is thus supportive of the role of neutrophil maturation in the activation of NSPs. Clinical trials to monitor the effect of a DPP1 inhibitor on NSPs should take into account the delay in maximal response on the one hand as well as the potential delay in a return to baseline NSP levels following cessation of treatment.
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Affiliation(s)
| | | | - S Clifton
- BioFocus, A Charles River Company, UK
| | - J Shearer
- BioFocus, A Charles River Company, UK
| | | | - S A Peters
- AstraZeneca, Mölndal, Sweden.,Merck Serono R&D, Darmstadt, Germany
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