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Kappelmayer J, Debreceni IB, Fejes Z, Nagy B. Inflammation, Sepsis, and the Coagulation System. Hamostaseologie 2024; 44:268-276. [PMID: 38354835 DOI: 10.1055/a-2202-8544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2024] Open
Abstract
Sepsis has been a major health problem for centuries and it is still the leading cause of hospital deaths. Several studies in the past decades have identified numerous biochemical abnormalities in severe cases, and many of these studies provide evidence of the perturbation of the hemostatic system. This can result in complications, such as disseminated intravascular coagulation that can lead to multiorgan failure. Nevertheless, large clinical studies have demonstrated that the simple approach of inhibiting the coagulation processes by any means fails to provide significant improvement in the survival of septic patients. A cause of this failure could be the fact that in sepsis the major clinical problems result not primarily from the presence of the infective agent or enhanced coagulation but from the complex dysregulated systemic host response to pathogens. If this overt reaction is not fully deciphered, appropriate interference is highly unlikely and any improvement by conventional therapeutic interventions would be limited. Cellular activation in sepsis can be targeted by novel approaches like inhibition of the heterotypic cellular interactions of blood cells by targeting surface receptors or posttranscriptional control of the hemostatic system by noncoding ribonucleic acid (RNA) molecules. Stable RNA molecules can affect the expression of several proteins. Thus, it can be anticipated that modulation of microRNA production would result in a multitude of effects that may be beneficial in septic cases. Here, we highlight some of the recent diagnostic possibilities and potential novel routes of the dysregulated host response.
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Affiliation(s)
- János Kappelmayer
- Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Ildikó Beke Debreceni
- Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Zsolt Fejes
- Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Béla Nagy
- Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
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2
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Paul O, Akolia IK, Qin Tao J, Jain N, Louneva N, Montone KT, Fisher AB, Rajapakse CS, Bermudez C, Chatterjee S. Reactive oxygen species in endothelial signaling in COVID-19: Protective role of the novel peptide PIP-2. PLoS One 2024; 19:e0289854. [PMID: 38771750 PMCID: PMC11108150 DOI: 10.1371/journal.pone.0289854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 04/02/2024] [Indexed: 05/23/2024] Open
Abstract
INTRODUCTION Recent research suggests that endothelial activation plays a role in coronavirus disease 2019 (COVID-19) pathogenesis by promoting a pro-inflammatory state. However, the mechanism by which the endothelium is activated in COVID-19 remains unclear. OBJECTIVE To investigate the mechanism by which COVID-19 activates the pulmonary endothelium and drives pro-inflammatory phenotypes. HYPOTHESIS The "inflammatory load or burden" (cytokine storm) of the systemic circulation activates endothelial NADPH oxidase 2 (NOX2) which leads to the production of reactive oxygen species (ROS) by the pulmonary endothelium. Endothelial ROS subsequently activates pro-inflammatory pathways. METHODS The inflammatory burden of COVID-19 on the endothelial network, was recreated in vitro, by exposing human pulmonary microvascular endothelial cells (HPMVEC) to media supplemented with serum from COVID-19 affected individuals (sera were acquired from patients with COVID-19 infection that eventually died. Sera was isolated from blood collected at admission to the Intensive Care Unit of the Hospital of the University of Pennsylvania). Endothelial activation, inflammation and cell death were assessed in HPMVEC treated with serum either from patients with COVID-19 or from healthy individuals. Activation was monitored by measuring NOX2 activation (Rac1 translocation) and ROS production; inflammation (or appearance of a pro-inflammatory phenotype) was monitored by measuring the induction of moieties such as intercellular adhesion molecule (ICAM-1), P-selectin and the NLRP3 inflammasome; cell death was measured via SYTOX™ Green assays. RESULTS Endothelial activation (i.e., NOX2 activation and subsequent ROS production) and cell death were significantly higher in the COVID-19 model than in healthy samples. When HPMVEC were pre-treated with the novel peptide PIP-2, which blocks NOX2 activation (via inhibition of Ca2+-independent phospholipase A2, aiPLA2), significant abrogation of ROS was observed. Endothelial inflammation and cell death were also significantly blunted. CONCLUSIONS The endothelium is activated during COVID-19 via cytokine storm-driven NOX2-ROS activation, which causes a pro-inflammatory phenotype. The concept of endothelial NOX2-ROS production as a unifying pathophysiological axis in COVID-19 raises the possibility of using PIP-2 to maintain vascular health.
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Affiliation(s)
- Oindrila Paul
- Institute for Environmental Medicine and Department of Physiology, Philadelphia, Pennsylvania, United States of America
| | - Isha K. Akolia
- Institute for Environmental Medicine and Department of Physiology, Philadelphia, Pennsylvania, United States of America
| | - Jian Qin Tao
- Institute for Environmental Medicine and Department of Physiology, Philadelphia, Pennsylvania, United States of America
| | - Nikita Jain
- Institute for Environmental Medicine and Department of Physiology, Philadelphia, Pennsylvania, United States of America
| | - Natalia Louneva
- Peroxitech Inc., Philadelphia, Pennsylvania, United States of America
| | - Kathleen T. Montone
- Department of Pathology, Philadelphia, Pennsylvania, United States of America
| | - Aron B. Fisher
- Peroxitech Inc., Philadelphia, Pennsylvania, United States of America
| | - Chamith S. Rajapakse
- Department of Radiology, Philadelphia, Pennsylvania, United States of America
- Department of Orthopedic Surgery, Philadelphia, Pennsylvania, United States of America
| | - Christian Bermudez
- Department of Surgery, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania, United States of America
| | - Shampa Chatterjee
- Institute for Environmental Medicine and Department of Physiology, Philadelphia, Pennsylvania, United States of America
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Sienkiewicz-Szłapka E, Fiedorowicz E, Król-Grzymała A, Kordulewska N, Rozmus D, Cieślińska A, Grzybowski A. The Role of Genetic Polymorphisms in Diabetic Retinopathy: Narrative Review. Int J Mol Sci 2023; 24:15865. [PMID: 37958858 PMCID: PMC10650381 DOI: 10.3390/ijms242115865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 10/23/2023] [Accepted: 10/27/2023] [Indexed: 11/15/2023] Open
Abstract
Diabetic retinopathy (DR) is renowned as a leading cause of visual loss in working-age populations with its etiopathology influenced by the disturbance of biochemical metabolic pathways and genetic factors, including gene polymorphism. Metabolic pathways considered to have an impact on the development of the disease, as well as genes and polymorphisms that can affect the gene expression, modify the quantity and quality of the encoded product (protein), and significantly alter the metabolic pathway and its control, and thus cause changes in the functioning of metabolic pathways. In this article, the screening of chromosomes and the most important genes involved in the etiology of diabetic retinopathy is presented. The common databases with manuscripts published from January 2000 to June 2023 have been taken into consideration and chosen. This article indicates the role of specific genes in the development of diabetic retinopathy, as well as polymorphic changes within the indicated genes that may have an impact on exacerbating the symptoms of the disease. The collected data will allow for a broader look at the disease and help to select candidate genes that can become markers of the disease.
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Affiliation(s)
- Edyta Sienkiewicz-Szłapka
- Department of Biochemistry, Faculty of Biology and Biotechnology, University of Warmia and Mazury, 10-719 Olsztyn, Poland; (E.S.-S.); (E.F.); (A.K.-G.); (N.K.); (D.R.)
| | - Ewa Fiedorowicz
- Department of Biochemistry, Faculty of Biology and Biotechnology, University of Warmia and Mazury, 10-719 Olsztyn, Poland; (E.S.-S.); (E.F.); (A.K.-G.); (N.K.); (D.R.)
| | - Angelika Król-Grzymała
- Department of Biochemistry, Faculty of Biology and Biotechnology, University of Warmia and Mazury, 10-719 Olsztyn, Poland; (E.S.-S.); (E.F.); (A.K.-G.); (N.K.); (D.R.)
| | - Natalia Kordulewska
- Department of Biochemistry, Faculty of Biology and Biotechnology, University of Warmia and Mazury, 10-719 Olsztyn, Poland; (E.S.-S.); (E.F.); (A.K.-G.); (N.K.); (D.R.)
| | - Dominika Rozmus
- Department of Biochemistry, Faculty of Biology and Biotechnology, University of Warmia and Mazury, 10-719 Olsztyn, Poland; (E.S.-S.); (E.F.); (A.K.-G.); (N.K.); (D.R.)
| | - Anna Cieślińska
- Department of Biochemistry, Faculty of Biology and Biotechnology, University of Warmia and Mazury, 10-719 Olsztyn, Poland; (E.S.-S.); (E.F.); (A.K.-G.); (N.K.); (D.R.)
| | - Andrzej Grzybowski
- Institute for Research in Ophthalmology, Foundation for Ophthalmology Development, Gorczyczewskiego 2/3, 61-553 Poznań, Poland;
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Zamzam A, Syed MH, Rotstein OD, Eikelboom J, Klein DJ, Singh KK, Abdin R, Qadura M. Validating fatty acid binding protein 3 as a diagnostic and prognostic biomarker for peripheral arterial disease: A three-year prospective follow-up study. EClinicalMedicine 2023; 55:101766. [PMID: 36531981 PMCID: PMC9755058 DOI: 10.1016/j.eclinm.2022.101766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 11/14/2022] [Accepted: 11/15/2022] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Patients with peripheral arterial disease (PAD) often remain undiagnosed and therefore suboptimally managed. Here, we investigated the diagnostic and prognostic potential of fatty acid binding protein 3 (FABP3) in patients with PAD. METHODS In the discovery phase, 374 PAD and 184 non-PAD patients were recruited from vascular surgery ambulatory clinics at St. Michael's Hospital (Toronto, Ontario, Canada) between October 4, 2017 to October 29, 2018. The diagnostic ability of baseline FABP3 level was investigated through receiver operator characteristic (ROC) curves to determine two cutoff points: 1) an exclusionary "rule out" cutoff point, and 2) a confirmatory "rule in" cutoff point. Next, these cutoff points were confirmed in the external validation phase using a separate cohort of 312 patients (180 PAD and 132 non-PAD) recruited from ambulatory vascular surgery clinics at St. Michael's Hospital (Canada) between November 6, 2018-July 30, 2019. Cox regression analyses were used to explore the independent association between FABP3 and major adverse limb events (MALE - defined as need for arterial revascularization or major amputation) and decrease in ankle-brachial index (ABI -defined as drop ≥0.15) during 3 years of follow-up. FINDINGS In the discovery phase, FABP3 levels were significantly elevated in patients with PAD compared to non-PAD patients. ROC analysis demonstrated that FABP3 had an AUC of 0.83 (95% CI: 0.81-0.86, p-value < 0.001). FABP3 exclusionary cutoff was <1.55 ng/ml (sensitivity = 96%; specificity = 40%), whereas FABP3 confirmatory cutoff was >3.55 ng/ml (sensitivity = 43%; specificity = 95%) - values that were confirmed in the external validation phase. Cox regression analysis demonstrated FABP3 to be an independent predictor of increase in MALE [HR = 1.14 (1.03-1.29); p-value = 0.010] and worsening PAD status (drop in ABI >0.15 [HR = 1.11 (1.02-1.19); p-value = 0.009]). INTERPRETATION Our findings suggested that FABP3 levels can be used as both a diagnostic and prognostic biomarker for PAD, and may facilitate risk stratification in select individuals for purposes of vascular evaluation or intensive medical management. FUNDING Funding for this study was provided by the Bill and Vicky Blair Foundation.
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Affiliation(s)
- Abdelrahman Zamzam
- Division of Vascular Surgery, St. Michael's Hospital, Toronto, ON, M5B 1W8, Canada
| | - Muzammil H. Syed
- Division of Vascular Surgery, St. Michael's Hospital, Toronto, ON, M5B 1W8, Canada
| | - Ori D. Rotstein
- Department of Surgery, University of Toronto, Toronto, ON, M5S 1A1, Canada
- Keenan Research Centre for Biomedical Science, Li Ka Shing Knowledge Institute of St. Michael's Hospital, Toronto, ON, M5B 1W8, Canada
| | - John Eikelboom
- Population Health Research Institute, McMaster University, Hamilton, Ontario, Canada
- Department of Medicine, McMaster University, Hamilton, ON, L8S 4K1, Canada
| | - David J. Klein
- Dalla Lana School of Public Health, University of Toronto, Toronto, ON M5T 3M7, Canada
- Department of Critical Care, St. Michael's Hospital, Toronto, ON, M5B 1W8, Canada
| | - Krishna K. Singh
- Department of Medical Biophysics, Schulich School of Medicine and Dentistry, University of Western Ontario, London ON, N6A 5C1, Canada
| | - Rawand Abdin
- Department of Medicine, McMaster University, Hamilton, ON, L8S 4K1, Canada
| | - Mohammad Qadura
- Division of Vascular Surgery, St. Michael's Hospital, Toronto, ON, M5B 1W8, Canada
- Department of Surgery, University of Toronto, Toronto, ON, M5S 1A1, Canada
- Keenan Research Centre for Biomedical Science, Li Ka Shing Knowledge Institute of St. Michael's Hospital, Toronto, ON, M5B 1W8, Canada
- Corresponding author. St. Michael's Hospital, 30 Bond St, 7-076 Bond Wing, Toronto, Ontario, M5B 1W8, Canada.
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Mihaila R, Ruhela D, Xu L, Joussef S, Geng X, Shi J, Kim AS, Yares W, Furstoss K, Iverson K. Analytical comparability demonstrated for an IgG4 molecule, inclacumab, following transfer of manufacturing responsibility from Roche to Global Blood Therapeutics. Expert Opin Biol Ther 2022; 22:1417-1428. [DOI: 10.1080/14712598.2022.2143260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Radu Mihaila
- Global Blood Therapeutics, South San Francisco, CA, USA
| | - Dipali Ruhela
- Global Blood Therapeutics, South San Francisco, CA, USA
| | - Lifang Xu
- Global Blood Therapeutics, South San Francisco, CA, USA
| | | | - Xin Geng
- Global Blood Therapeutics, South San Francisco, CA, USA
| | - Jianxia Shi
- Global Blood Therapeutics, South San Francisco, CA, USA
| | - Andrea S. Kim
- Global Blood Therapeutics, South San Francisco, CA, USA
| | - Wendy Yares
- Global Blood Therapeutics, South San Francisco, CA, USA
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Rama E, Mohapatra SR, Melcher C, Nolte T, Dadfar SM, Brueck R, Pathak V, Rix A, Gries T, Schulz V, Lammers T, Apel C, Jockenhoevel S, Kiessling F. Monitoring the Remodeling of Biohybrid Tissue-Engineered Vascular Grafts by Multimodal Molecular Imaging. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2105783. [PMID: 35119216 PMCID: PMC8981893 DOI: 10.1002/advs.202105783] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Indexed: 06/10/2023]
Abstract
Tissue-engineered vascular grafts (TEVGs) with the ability to grow and remodel open new perspectives for cardiovascular surgery. Equipping TEVGs with synthetic polymers and biological components provides a good compromise between high structural stability and biological adaptability. However, imaging approaches to control grafts' structural integrity, physiological function, and remodeling during the entire transition between late in vitro maturation and early in vivo engraftment are mandatory for clinical implementation. Thus, a comprehensive molecular imaging concept using magnetic resonance imaging (MRI) and ultrasound (US) to monitor textile scaffold resorption, extracellular matrix (ECM) remodeling, and endothelial integrity in TEVGs is presented here. Superparamagnetic iron-oxide nanoparticles (SPION) incorporated in biodegradable poly(lactic-co-glycolic acid) (PLGA) fibers of the TEVGs allow to quantitatively monitor scaffold resorption via MRI both in vitro and in vivo. Additionally, ECM formation can be depicted by molecular MRI using elastin- and collagen-targeted probes. Finally, molecular US of αv β3 integrins confirms the absence of endothelial dysfunction; the latter is provocable by TNF-α. In conclusion, the successful employment of noninvasive molecular imaging to longitudinally evaluate TEVGs remodeling is demonstrated. This approach may foster its translation from in vitro quality control assessment to in vivo applications to ensure proper prostheses engraftment.
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Affiliation(s)
- Elena Rama
- Institute for Experimental Molecular Imaging University Clinic and Helmholtz Institute for Biomedical Engineering RWTH – Aachen University Forckenbeckstrasse 5552074AachenGermany
| | - Saurav Ranjan Mohapatra
- Department of Biohybrid & Medical TextilesInstitute of Applied Medical Engineering RWTH – Aachen University Forckenbeckstrasse 5552074AachenGermany
| | - Christoph Melcher
- Institute for Textile Technology RWTH – Aachen University Forckenbeckstrasse 5552074AachenGermany
| | - Teresa Nolte
- Institute for Experimental Molecular Imaging University Clinic and Helmholtz Institute for Biomedical Engineering RWTH – Aachen University Forckenbeckstrasse 5552074AachenGermany
| | - Seyed Mohammadali Dadfar
- Institute for Experimental Molecular Imaging University Clinic and Helmholtz Institute for Biomedical Engineering RWTH – Aachen University Forckenbeckstrasse 5552074AachenGermany
| | - Ramona Brueck
- Institute for Experimental Molecular Imaging University Clinic and Helmholtz Institute for Biomedical Engineering RWTH – Aachen University Forckenbeckstrasse 5552074AachenGermany
| | - Vertika Pathak
- Institute for Experimental Molecular Imaging University Clinic and Helmholtz Institute for Biomedical Engineering RWTH – Aachen University Forckenbeckstrasse 5552074AachenGermany
| | - Anne Rix
- Institute for Experimental Molecular Imaging University Clinic and Helmholtz Institute for Biomedical Engineering RWTH – Aachen University Forckenbeckstrasse 5552074AachenGermany
| | - Thomas Gries
- Institute for Textile Technology RWTH – Aachen University Forckenbeckstrasse 5552074AachenGermany
| | - Volkmar Schulz
- Institute for Experimental Molecular Imaging University Clinic and Helmholtz Institute for Biomedical Engineering RWTH – Aachen University Forckenbeckstrasse 5552074AachenGermany
| | - Twan Lammers
- Institute for Experimental Molecular Imaging University Clinic and Helmholtz Institute for Biomedical Engineering RWTH – Aachen University Forckenbeckstrasse 5552074AachenGermany
| | - Christian Apel
- Department of Biohybrid & Medical TextilesInstitute of Applied Medical Engineering RWTH – Aachen University Forckenbeckstrasse 5552074AachenGermany
| | - Stefan Jockenhoevel
- Department of Biohybrid & Medical TextilesInstitute of Applied Medical Engineering RWTH – Aachen University Forckenbeckstrasse 5552074AachenGermany
| | - Fabian Kiessling
- Institute for Experimental Molecular Imaging University Clinic and Helmholtz Institute for Biomedical Engineering RWTH – Aachen University Forckenbeckstrasse 5552074AachenGermany
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7
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Tomasiuk R. N-Terminal Pro-C-Type Natriuretic Peptide: The Novel Marker in Selected Disease Units. Protein Pept Lett 2021; 29:125-132. [PMID: 34823452 DOI: 10.2174/0929866528666211125104944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 09/12/2021] [Accepted: 09/21/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Amino-terminal pro C type natriuretic peptide (NT proCNP) is the N terminal fragment of the CNP precursor. NT proCNP occurs in an equimolar concentration with CNP in human plasma and is considered to be a marker of the extent of CNP biosynthesis. A recent study has shown associations between plasma NT proCNP and blood pressure; it is also an independent predictor of death and cardiac readmission in people with unstable angina. Beyond that, recent studies have focused on the applicability of assessing NT proCNP peptide levels in the diagnosis of diseases with different etiologies but the same denominator, i.e., inflammation. METHODS This study reviewed recent results on the usability of NT proCNP peptide levels in the diagnosis of diseases accompanied by statistical analysis of previously reported results. RESULTS The data obtained confirmed the applicability of the assessment of NT proCNP levels in biological fluids in diseases, such as Parkinson's disease, sepsis, meningitis, and asthenozoospermia. CONCLUSION The reported results demonstrated that NT-proCNP is helpful in a variety of diseases. Furthermore, changes in serum or CSF levels of NT-proCNP reflect only inflammatory states related to general inflammation. Local inflammation does not trigger an increase in NT proCNP level.
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Affiliation(s)
- Ryszard Tomasiuk
- Kazimierz Pulaski University of Technology and Humanities Radom, Faculty of Medical Sciences and Health Sciences, Radom. Poland
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8
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Don TM, Chang WJ, Jheng PR, Huang YC, Chuang EY. Curcumin-laden dual-targeting fucoidan/chitosan nanocarriers for inhibiting brain inflammation via intranasal delivery. Int J Biol Macromol 2021; 181:835-846. [PMID: 33857519 DOI: 10.1016/j.ijbiomac.2021.04.045] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 04/01/2021] [Accepted: 04/07/2021] [Indexed: 02/06/2023]
Abstract
Curcumin can reduce the production of brain inflammatory mediators and symptoms of brain diseases. However, a large amount of free curcumin needs to be administered to achieve an effective level in the brain because of its poor water-solubility. Fucoidan and chitosan were reported to respectively target P-selectin and acidic microenvironment expressed by pathologically inflammatory cells/tissues. Herein, the self-assembly of chitosan and fucoidan which could encapsulate curcumin was developed to form the multi-stimuli-responsive nanocarriers, and their pathological pH- and P-selectin-responsive aspects were characterized. Through intranasal delivery to the brain, these curcumin-containing chitosan/fucoidan nanocarriers with dual pH-/P-selectin-targeting properties to the brain lesions improved drug delivery, distribution, and accumulation in the inflammatory brain lesions as evidenced by an augmented inhibitory effect against brain inflammation. This promising multifunctional nanocarrier with a novel drug-delivery route should allow potential clinical biomedical uses by neurosurgeon in the future.
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Affiliation(s)
- Trong-Ming Don
- Department of Chemical and Materials Engineering, Tamkang University, New Taipei City, Taiwan
| | - Wan-Ju Chang
- College of Life Sciences, Department of Food Science, National Taiwan Ocean University, Keelung, Taiwan
| | - Pei-Ru Jheng
- Graduate Institute of Biomedical Materials and Tissue Engineering, International PhD Program in Biomedical Engineering, Graduate Institute of Biomedical Optomechatronics, School of Biomedical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei, Taiwan; Research Center of Biomedical Device, Taipei Medical University, Taipei, Taiwan
| | - Yi-Cheng Huang
- College of Life Sciences, Department of Food Science, National Taiwan Ocean University, Keelung, Taiwan.
| | - Er-Yuan Chuang
- Graduate Institute of Biomedical Materials and Tissue Engineering, International PhD Program in Biomedical Engineering, Graduate Institute of Biomedical Optomechatronics, School of Biomedical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei, Taiwan; Research Center of Biomedical Device, Taipei Medical University, Taipei, Taiwan; Cell Physiology and Molecular Image Research Center, Taipei Medical University-Wan Fang Hospital, Taipei, Taiwan.
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9
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Baidildinova G, Nagy M, Jurk K, Wild PS, Ten Cate H, van der Meijden PEJ. Soluble Platelet Release Factors as Biomarkers for Cardiovascular Disease. Front Cardiovasc Med 2021; 8:684920. [PMID: 34235190 PMCID: PMC8255615 DOI: 10.3389/fcvm.2021.684920] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 05/24/2021] [Indexed: 12/19/2022] Open
Abstract
Platelets are the main players in thrombotic diseases, where activated platelets not only mediate thrombus formation but also are involved in multiple interactions with vascular cells, inflammatory components, and the coagulation system. Although in vitro reactivity of platelets provides information on the function of circulating platelets, it is not a full reflection of the in vivo activation state, which may be relevant for thrombotic risk assessment in various disease conditions. Therefore, studying release markers of activated platelets in plasma is of interest. While this type of study has been done for decades, there are several new discoveries that highlight the need for a critical assessment of the available tests and indications for platelet release products. First, new insights have shown that platelets are not only prominent players in arterial vascular disease, but also in venous thromboembolism and atrial fibrillation. Second, knowledge of the platelet proteome has dramatically expanded over the past years, which contributed to an increasing array of tests for proteins released and shed from platelets upon activation. Identification of changes in the level of plasma biomarkers associated with upcoming thromboembolic events allows timely and individualized adjustment of the treatment strategy to prevent disease aggravation. Therefore, biomarkers of platelet activation may become a valuable instrument for acute event prognosis. In this narrative review based on a systematic search of the literature, we summarize the process of platelet activation and release products, discuss the clinical context in which platelet release products have been measured as well as the potential clinical relevance.
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Affiliation(s)
- Gaukhar Baidildinova
- Departments of Biochemistry and Internal Medicine, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Maastricht, Netherlands.,Center for Thrombosis and Hemostasis, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Magdolna Nagy
- Departments of Biochemistry and Internal Medicine, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Maastricht, Netherlands
| | - Kerstin Jurk
- Center for Thrombosis and Hemostasis, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany.,DZHK (German Center for Cardiovascular Research), Partner Site RhineMain, Mainz, Germany
| | - Philipp S Wild
- Center for Thrombosis and Hemostasis, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany.,DZHK (German Center for Cardiovascular Research), Partner Site RhineMain, Mainz, Germany.,Preventive Cardiology and Preventive Medicine, Center for Cardiology, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Hugo Ten Cate
- Departments of Biochemistry and Internal Medicine, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Maastricht, Netherlands.,Center for Thrombosis and Hemostasis, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany.,Thrombosis Expertise Center, Heart and Vascular Center, Maastricht University Medical Center, Maastricht, Netherlands
| | - Paola E J van der Meijden
- Departments of Biochemistry and Internal Medicine, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Maastricht, Netherlands.,Thrombosis Expertise Center, Heart and Vascular Center, Maastricht University Medical Center, Maastricht, Netherlands
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10
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Szilágyi B, Fejes Z, Rusznyák Á, Fenyvesi F, Pócsi M, Halmi S, Griger Z, Kunapuli SP, Kappelmayer J, Nagy B. Platelet Microparticles Enriched in miR-223 Reduce ICAM-1-Dependent Vascular Inflammation in Septic Conditions. Front Physiol 2021; 12:658524. [PMID: 34135769 PMCID: PMC8201999 DOI: 10.3389/fphys.2021.658524] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 04/21/2021] [Indexed: 12/19/2022] Open
Abstract
In the process of sepsis, activated platelets shed microvesicles containing microRNAs (miRNAs), which can be internalized by distinct recipient cells in circulation, consequently eliciting a potent capability to regulate their cellular functions in different diseases. In the present study, activated human platelets transferring miR-223 into endothelial cells via platelet-derived microparticles (PMPs) was investigated in vitro during septic conditions with a proposed mechanism involving in downregulation of the enhanced expression of intercellular adhesion molecule-1 (ICAM-1). The uptake of PMPs encasing miR-223 and the adhesion of peripheral blood mononuclear cells (PBMCs) on human coronary artery endothelial cells (HCAECs) were observed by immunofluorescence microscopy upon co-culture with PMPs isolated from sepsis or control plasma. The expression of miR-223-3p and its gene target ICAM1 in HCAECs were quantified by RT-qPCR and ELISA after the cells were incubated with septic or control PMPs, whose levels were induced with thrombin-receptor activating peptide (TRAP). Leukocyte-depleted platelets (LDPs) from septic patients showed a decreased miR-223 level, while septic plasma and PMPs revealed an elevated miRNA level compared to control samples. Similarly, TRAP-activated LDPs demonstrated a reduced intracellular miR-223 expression, while increased levels in the supernatant and PMP isolates were observed vs. untreated samples. Furthermore, TNF-α alone resulted in decreased miR-223 and elevated ICAM1 levels in HCAECs, while PMPs raised the miRNA level that was associated with downregulated ICAM1 expression at both mRNA and protein levels under TNF-α treatment. Importantly, miR-223 was turned out not to be newly synthesized as shown in unchanged pre-miR-223 level, and mature miR-223 expression was also elevated in the presence of PMPs in HCAECs after transfection with Dicer1 siRNA. In addition, septic PMPs containing miR-223 decreased ICAM1 with a reduction of PBMC binding to HCAECs. In conclusion, septic platelets released PMPs carrying functional miR-223 lower ICAM1 expression in endothelial cells, which may be a protective role against excessive sepsis-induced vascular inflammation.
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Affiliation(s)
- Bernadett Szilágyi
- Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary.,Kálmán Laki Doctoral School of Biomedical and Clinical Sciences, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Zsolt Fejes
- Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary.,Kálmán Laki Doctoral School of Biomedical and Clinical Sciences, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Ágnes Rusznyák
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Debrecen, Hungary.,Doctoral School of Pharmaceutical Sciences, University of Debrecen, Debrecen, Hungary
| | - Ferenc Fenyvesi
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Debrecen, Hungary.,Doctoral School of Pharmaceutical Sciences, University of Debrecen, Debrecen, Hungary
| | - Marianna Pócsi
- Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Sándor Halmi
- Faculty of Medicine, Institute of Internal Medicine, University of Debrecen, Debrecen, Hungary
| | - Zoltán Griger
- Faculty of Medicine, Institute of Internal Medicine, University of Debrecen, Debrecen, Hungary
| | - Satya P Kunapuli
- Department of Physiology and Sol Sherry Thrombosis Center, Temple University School of Medicine, Philadelphia, PA, United States
| | - János Kappelmayer
- Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary.,Kálmán Laki Doctoral School of Biomedical and Clinical Sciences, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Béla Nagy
- Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary.,Kálmán Laki Doctoral School of Biomedical and Clinical Sciences, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
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11
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Echeverría LE, Rojas LZ, Gómez-Ochoa SA. Coagulation disorders in Chagas disease: A pathophysiological systematic review and meta-analysis. Thromb Res 2021; 201:73-83. [PMID: 33652329 DOI: 10.1016/j.thromres.2021.02.025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 02/10/2021] [Accepted: 02/16/2021] [Indexed: 12/15/2022]
Abstract
BACKGROUND Currently, Chagas disease (CD) constitutes one of the main public health problems in Latin America. However, little is known about potential mechanisms of disease different from cardiac or digestive involvement, such as the coagulation disorders elicited by the parasite persistence in the tissues. The aim of this systematic review was to describe and characterize all the published literature that evaluated the pathophysiological aspects of coagulation disorders in CD. METHODS Searches in Medline, EMBASE, and LILACS databases (from inception to July 28th, 2020) were performed. Articles of any language reporting the levels of different coagulation factors/markers or the prevalence of abnormal levels of the mentioned molecules in patients with CD were included. Two reviewers independently selected the studies, extracted the data, and assessed the quality of evidence. Estimates were pooled using random-effects meta-analyses. RESULTS Seven studies evaluating a total of 676 participants fulfilled the criteria and were included, while only six were suitable for meta-analyzing (544 participants, 52% men, mean age: 49 ± 8 years). 57.16% of the patients in the meta-analysis had a serological confirmed diagnosis of CD, while 97% of these were in the indeterminate stage of the disease. Patients in the CD group had higher levels of F 1 + 2 (SMD 5.15. 95% CI 1.92, 8.38), PAI-1 (SMD 0.46. 95% CI 0.07; 0.89), and P-selectin (SMD 1.8; 95% CI 0.13-3.47) compared to healthy controls. Furthermore, benznidazole therapy was associated with a reduction in the levels of these biomarkers after treatment. CONCLUSION The results of the present study suggest that patients with chronic T. cruzi infection are affected by a potential hypercoagulable state irrespective of the development of cardiac or digestive disease. Furthermore, the reduction in the levels of the coagulation markers after benznidazole therapy may suggest a significant role of the parasite load in the development of these coagulation disorders. There is a scarcity of research assessing the molecular and pathophysiological mechanisms of coagulation disorders in Chagas disease. Further research is needed to assess the benefit of benznidazole therapy on this hypercoagulable state in the long-term, along with its impact on the risk of thromboembolic events in CD patients.
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Affiliation(s)
- Luis E Echeverría
- Heart Failure and Heart Transplant Clinic, Fundación Cardiovascular de Colombia, Floridablanca, Colombia.
| | - Lyda Z Rojas
- Research Group and Development of Nursing Knowledge (GIDCEN-FCV), Research Center, Cardiovascular Foundation of Colombia, Floridablanca, Santander, Colombia
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12
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Setiawan B, Permatadewi CO, de Samakto B, Bugis A, Naibaho RM, Pangarsa EA, Santosa D, Suharti C. Von Willebrand factor:antigen and ADAMTS-13 level, but not soluble P-selectin, are risk factors for the first asymptomatic deep vein thrombosis in cancer patients undergoing chemotherapy. Thromb J 2020; 18:33. [PMID: 33292287 PMCID: PMC7659107 DOI: 10.1186/s12959-020-00247-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 11/05/2020] [Indexed: 12/12/2022] Open
Abstract
Background There is a high incidence of deep vein thrombosis (DVT) among cancer patients undergoing chemotherapy. Chemotherapy-induced vascular endothelial cell activation (VECA) is characterized by increased plasma levels of von Willebrand factor (vWF) and soluble P-selectin (sP-selectin), leading to the activation of endothelial cells and signaling cascades. The biological role of a disintegrin-like and metalloproteinase with thrombospondin type 1 motif, member 13 (ADAMTS-13) is to control the activity of vWF and consequently the risk of thrombosis. The objective of this study was to investigate the roles of sP-selectin, vWF, and ADAMTS-13 as risk factors for the first episode of DVT in cancer patients undergoing chemotherapy. Methods This prospective cohort study was conducted at Dr. Kariadi Hospital, Indonesia, on 40 cancer patients. Prechemotherapy (baseline) and postchemotherapy sP-selectin, vWF antigen (vWF:Ag), and ADAMTS-13 plasma levels were determined with ELISAs before and 3 months after chemotherapy. The clinical characteristics of the patients, cancer type, cancer stage, chemotherapy regimen, ABO blood type, D-dimer level and Khorana risk score were also analyzed using logistic regression. Patients were observed for the possibility of developing DVT during chemotherapy. Results DVT was confirmed in 5 patients (12.5%) after a period of 3 months. In patients with DVT, sP-selectin and vWF were significantly higher while ADAMTS-13 was lower than in their counterparts. The levels of baseline vWF:Ag and ADAMTS-13, with cut-off points ≥ 2.35 IU/mL and ≤ 1.03 IU/mL, respectively, were found to independently predict the incidence of DVT. In the multivariate logistic regression analysis, the relative risk (RR) for DVT in patients with high vWF:Ag was 3.80 (95% CI 1.15–12.48, p = 0.028), and that for patients with low ADAMTS-13 was 2.67 (95% CI 1.22–23.82, p = 0.005). The vWF:Ag/ADAMTS-13 ratio and both vWF:Ag and ADAMTS-13 dynamics during treatment were also able to differentiate those with prospective DVT. However, sP-selectin and other covariates showed no statistical significance. Conclusion We found that prechemotherapy plasma levels of vWF:Ag ≥ 2.35 IU/mL and ADAMTS-13 ≤ 1.03 IU/mL are independent risk factors for DVT incidence among cancer patients.
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Affiliation(s)
- Budi Setiawan
- Division of Hematology and Medical Oncology, Department of Internal Medicine, Medical Faculty of Diponegoro University and Dr. Kariadi Hospital, Semarang, Indonesia.
| | - Cecilia Oktaria Permatadewi
- Department of Internal Medicine, Medical Faculty of Diponegoro University and Dr. Kariadi Hospital, Semarang, Indonesia
| | - Baringin de Samakto
- Department of Internal Medicine, Medical Faculty of Diponegoro University and Dr. Kariadi Hospital, Semarang, Indonesia
| | - Ashar Bugis
- Department of Internal Medicine, Medical Faculty of Diponegoro University and Dr. Kariadi Hospital, Semarang, Indonesia
| | - Ridho M Naibaho
- Division of Hematology and Medical Oncology, Department of Internal Medicine, Medical Faculty of Diponegoro University and Dr. Kariadi Hospital, Semarang, Indonesia.,Fellow in Hematology and Medical Oncology, Department of Internal Medicine, Medical Faculty of Mulawarman University, Parikesit General Hospital, Kutai Kartanegara, Indonesia
| | - Eko Adhi Pangarsa
- Division of Hematology and Medical Oncology, Department of Internal Medicine, Medical Faculty of Diponegoro University and Dr. Kariadi Hospital, Semarang, Indonesia
| | - Damai Santosa
- Division of Hematology and Medical Oncology, Department of Internal Medicine, Medical Faculty of Diponegoro University and Dr. Kariadi Hospital, Semarang, Indonesia
| | - Catharina Suharti
- Division of Hematology and Medical Oncology, Department of Internal Medicine, Medical Faculty of Diponegoro University and Dr. Kariadi Hospital, Semarang, Indonesia
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13
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Johansson MW, Grill BM, Barretto KT, Favour MC, Schira HM, Swanson CM, Lee KE, Sorkness RL, Mosher DF, Denlinger LC, Jarjour NN. Plasma P-Selectin Is Inversely Associated with Lung Function and Corticosteroid Responsiveness in Asthma. Int Arch Allergy Immunol 2020; 181:879-887. [PMID: 32777786 DOI: 10.1159/000509600] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 06/14/2020] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Severe asthma has multiple phenotypes for which biomarkers are still being defined. Plasma P-selectin reports endothelial and/or platelet activation. OBJECTIVE To determine if P-selectin is associated with features of asthma in a longitudinal study. METHODS Plasmas from 70 adult patients enrolled in the Severe Asthma Research Program (SARP) III at the University of Wisconsin-Madison were analyzed for concentration of P-selectin at several points over the course of 3 years, namely, at baseline (BPS), after intramuscular triamcinolone acetonide (TA) injection, and at 36 months after baseline. Thirty-four participants also came in during acute exacerbation and 6 weeks after exacerbation. RESULTS BPS correlated inversely with forced expiratory volume in 1 s (FEV1) and with residual volume/total lung capacity, an indicator of air trapping. BPS was inversely associated with FEV1 change after TA, by regression analysis. FEV1 did not change significantly after TA if BPS was above the median, whereas patients with BPS below the median had significantly increased FEV1 after TA. BPS was higher in and predicted assignment to SARP phenotype cluster 5 ("severe fixed-airflow asthma"). P-selectin was modestly but significantly increased at exacerbation but returned to baseline within 3 years. CONCLUSIONS High BPS is associated with airway obstruction, air trapping, the "severe fixed-airflow" cluster, and lack of FEV1 improvement in response to TA injection. P-selectin concentration, which is a stable trait with only modest elevation during exacerbation, may be a useful biomarker for a severe asthma pheno- or endotype characterized by low pulmonary function and lack of corticosteroid responsiveness.
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Affiliation(s)
- Mats W Johansson
- Department of Biomolecular Chemistry, University of Wisconsin, Madison, Wisconsin, USA,
| | - Brandon M Grill
- Department of Biomolecular Chemistry, University of Wisconsin, Madison, Wisconsin, USA
| | - Karina T Barretto
- Department of Biomolecular Chemistry, University of Wisconsin, Madison, Wisconsin, USA
| | - Molly C Favour
- Department of Biomolecular Chemistry, University of Wisconsin, Madison, Wisconsin, USA
| | - Hazel M Schira
- Department of Biomolecular Chemistry, University of Wisconsin, Madison, Wisconsin, USA
| | - Calvin M Swanson
- Department of Biomolecular Chemistry, University of Wisconsin, Madison, Wisconsin, USA
| | - Kristine E Lee
- Department of Biostatistics and Medical Informatics, University of Wisconsin, Madison, Wisconsin, USA
| | - Ronald L Sorkness
- School of Pharmacy, University of Wisconsin, Madison, Wisconsin, USA
| | - Deane F Mosher
- Department of Biomolecular Chemistry, University of Wisconsin, Madison, Wisconsin, USA.,Department of Medicine, University of Wisconsin, Madison, Wisconsin, USA
| | - Loren C Denlinger
- Department of Medicine, University of Wisconsin, Madison, Wisconsin, USA
| | - Nizar N Jarjour
- Department of Medicine, University of Wisconsin, Madison, Wisconsin, USA
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14
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Heuberger JAAC, Posthuma JJ, Ziagkos D, Rotmans JI, Daniels JMA, Gal P, Stuurman FE, Spronk HMH, Ten Cate H, Burggraaf J, Moerland M, Cohen AF. Additive effect of erythropoietin use on exercise-induced endothelial activation and hypercoagulability in athletes. Eur J Appl Physiol 2020; 120:1893-1904. [PMID: 32537688 PMCID: PMC7340646 DOI: 10.1007/s00421-020-04419-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Accepted: 06/05/2020] [Indexed: 11/25/2022]
Abstract
Purpose Recombinant human erythropoietin (rHuEPO) is known to increase thrombotic risk in patients and might have similar effects in athletes abusing the drug. rHuEPO is prohibited by anti-doping legislation, but this risk has not been investigated thoroughly. This analysis was designed to evaluate whether rHuEPO impacts hemostatic profile and endothelial and platelet activation markers in trained subjects, and whether the combination with exercise affects exercise induced alterations. Methods This double-blind, randomized, placebo-controlled trial enrolled healthy, trained male cyclists aged 18–50 years. Participants were randomly allocated (1:1) to receive subcutaneous injections of rHuEPO (epoetin-β; mean dose 6000 IU per week) or placebo (0.9% NaCl) for 8 weeks. Subjects performed five maximal exercise tests and a road race, coagulation and endothelial/platelet markers were measured at rest and directly after each exercise effort. Results rHuEPO increased P-selectin (+ 7.8% (1.5–14.5), p = 0.02) and E-selectin (+ 8.6% (2.0–15.7), p = 0.01) levels at rest. Maximal exercise tests significantly influenced all measured coagulation and endothelial/platelet markers, and in the rHuEPO group maximal exercise tests led to 15.3% ((7.0–24.3%), p = 0.0004) higher E-selectin and 32.1% ((4.6–66.8%), p = 0.0207) higher Platelet factor 4 (PF4) levels compared to the placebo group. Conclusion In conclusion, rHuEPO treatment resulted in elevated E- and P-selectin levels in trained cyclists, indicating enhanced endothelial activation and/or platelet reactivity. Exercise itself induces hypercoagulability, and the combination of rHuEPO and exercise increased E-selectin and PF4 levels more than either intervention alone. Based on this, exercise potentially increases thrombotic risk, a risk that might be enhanced in combination with rHuEPO use. Electronic supplementary material The online version of this article (10.1007/s00421-020-04419-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
| | - Jelle J Posthuma
- Departments of Internal Medicine and Biochemistry, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Maastricht, The Netherlands
| | - Dimitrios Ziagkos
- Centre for Human Drug Research, Zernikedreef 8, 2333 CL, Leiden, The Netherlands
| | - Joris I Rotmans
- Department of Internal Medicine, Leiden University Medical Centre, Leiden, The Netherlands
| | - Johannes M A Daniels
- Department of Pulmonary Diseases, VU University Medical Centre, Amsterdam, The Netherlands
| | - Pim Gal
- Centre for Human Drug Research, Zernikedreef 8, 2333 CL, Leiden, The Netherlands
| | - Frederik E Stuurman
- Centre for Human Drug Research, Zernikedreef 8, 2333 CL, Leiden, The Netherlands
| | - Henri M H Spronk
- Departments of Internal Medicine and Biochemistry, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Maastricht, The Netherlands
| | - Hugo Ten Cate
- Departments of Internal Medicine and Biochemistry, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Maastricht, The Netherlands
| | - Jacobus Burggraaf
- Centre for Human Drug Research, Zernikedreef 8, 2333 CL, Leiden, The Netherlands
- Leiden Academic Centre for Drug Research, Leiden, The Netherlands
| | - Matthijs Moerland
- Centre for Human Drug Research, Zernikedreef 8, 2333 CL, Leiden, The Netherlands
| | - Adam F Cohen
- Centre for Human Drug Research, Zernikedreef 8, 2333 CL, Leiden, The Netherlands
- Department of Internal Medicine, Leiden University Medical Centre, Leiden, The Netherlands
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15
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Reduced miR-26b Expression in Megakaryocytes and Platelets Contributes to Elevated Level of Platelet Activation Status in Sepsis. Int J Mol Sci 2020; 21:ijms21030866. [PMID: 32013235 PMCID: PMC7036890 DOI: 10.3390/ijms21030866] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 01/22/2020] [Accepted: 01/26/2020] [Indexed: 12/16/2022] Open
Abstract
In sepsis, platelets may become activated via toll-like receptors (TLRs), causing microvascular thrombosis. Megakaryocytes (MKs) also express these receptors; thus, severe infection may modulate thrombopoiesis. To explore the relevance of altered miRNAs in platelet activation upon sepsis, we first investigated sepsis-induced miRNA expression in platelets of septic patients. The effect of abnormal Dicer level on miRNA expression was also evaluated. miRNAs were profiled in septic vs. normal platelets using TaqMan Open Array. We validated platelet miR-26b with its target SELP (P-selectin) mRNA levels and correlated them with clinical outcomes. The impact of sepsis on MK transcriptome was analyzed in MEG-01 cells after lipopolysaccharide (LPS) treatment by RNA-seq. Sepsis-reduced miR-26b was further studied using Dicer1 siRNA and calpain inhibition in MEG-01 cells. Out of 390 platelet miRNAs detected, there were 121 significantly decreased, and 61 upregulated in sepsis vs. controls. Septic platelets showed attenuated miR-26b, which were associated with disease severity and mortality. SELP mRNA level was elevated in sepsis, especially in platelets with increased mean platelet volume, causing higher P-selectin expression. Downregulation of Dicer1 generated lower miR-26b with higher SELP mRNA, while calpeptin restored miR-26b in MEG-01 cells. In conclusion, decreased miR-26b in MKs and platelets contributes to an increased level of platelet activation status in sepsis.
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16
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Zhang Z, Wang J, Liu F, Yuan L, Yuan J, Chen L, Zhong N, Lu W. Impacts of event-specific air quality improvements on total hospital admissions and reduced systemic inflammation in COPD patients. PLoS One 2019; 14:e0208687. [PMID: 30893301 PMCID: PMC6426198 DOI: 10.1371/journal.pone.0208687] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Accepted: 11/21/2018] [Indexed: 11/18/2022] Open
Abstract
There is limited evidence linking the impacts of reduced air pollution on hospital admissions. The potential biological mechanisms are still not completely understood. This study examined the effects of mitigated ambient pollution on hospital admissions and inflammatory biomarker levels in chronic obstructive pulmonary disease (COPD) COPD patients. Daily hospital admissions were compared over 51 days associated with the Asian Games period (Nov 1-Dec 21, 2010) with the identical calendar dates of baseline years (2004–2009 and 2011–2013). A three-year cohort study was conducted with 36 COPD patient participants. The daily particulate matter (PM10) decreased from 65.86 μg/m3 during the baseline period to 62.63 μg/m3 during the Asian Games period; the daily NO2 level decreased from 51.33 μg/m3 to 42.63 μg/m3. Between the baseline period and the Asian Games, daily hospital admissions from non-accidental diseases decreased from 116 to 93, respectively; respiratory diseases decreased from 20 to 17, respectively; and cardiovascular diseases decreased from 11 to 9 during the Asian Games period, respectively. No statistically significant reductions were seen in the remaining months of 2010 in Guangzhou, during the the Asian Games period in the control city, and two other control diseases. Furthermore, we identified significant improvement in CRP and fibrinogen by -20.4% and -15.4% from a pre-Asian game period to a during-Asian game period, respectively. For CRP, we found significant increases in NO2 at lag1-3 days after-Asian game period and significant increases in PM10 at lag1-2 days. Similar effects were also seen with fibrinogen. This discovery provides support for efforts to diminish air pollution and improve public health through human air pollutants intervention. Improved air pollution during the 2010 Asian games was correlated with decreases in biomarkers associated with systemic inflammation in COPD patient participants.
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Affiliation(s)
- Zili Zhang
- State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Disease, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, P.R. China
| | - Jian Wang
- State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Disease, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, P.R. China
- Division of Translational and Regenerative Medicine, Department of Medicine, The University of Arizona, Tucson, AZ, United States of America
| | - Fei Liu
- State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Disease, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, P.R. China
| | - Liang Yuan
- State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Disease, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, P.R. China
| | - Jili Yuan
- Department of Pediatrics, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, P.R. China
| | - Lianghua Chen
- State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Disease, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, P.R. China
| | - Nanshan Zhong
- State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Disease, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, P.R. China
| | - Wenju Lu
- State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Disease, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, P.R. China
- Department of Laboratory Medicine, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, P.R. China
- * E-mail:
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17
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Measurement of platelet p-selectin expression by flow cytometry in patients with acute ischemic stroke. ACTA MEDICA MARTINIANA 2018. [DOI: 10.2478/acm-2018-0002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Abstract
Aims: The aim of this study was to asses the platelet activation in the acute phase of ischemic stroke and transient ischemic attack (TIA) by defining p-selectin (CD62) expression by flow cytometry in vivo – without stimulation with agonists. We also studied whether antiplatelet therapy supresses the levels of baseline p-selectin expression and verified if there is a correlation between platelet CD62 expression and the type of ischemic stroke.
Methods: We determined the expression of platelet surface p-selectin using whole-blood flow cytometry within the first 48-hours after onset of cerebral symptoms in patients with atherothrombotic and lacunar ischemic stroke and in healthy volunteers. We studied the realationship between antiplatelet medication and the type of ischemic stroke to baseline p-selectin expression.
Results: Patients with acute cerebral ischemia have an excess of circulating platelets that express p-selectin, compared to healthy volunteers. The difference between average p-selectin expression in the group of healthy volunteers and the group of patients with stroke was statistically significant (p-value < 0,000001). Patients with stroke without antiplatelet medication showed a higher p-selectin expression than patients with antiplatelet medication (ASA, CLP, or ASA and CLP), hovewer, the difference was not statistically significant. There is no relationship between CD62 expression and the type of stroke.
Conclusions: We can conclude that p-selectin is a highly sensitive blood biomarker of increased platelet activation. Antiplatelet therapy suppresses baseline p-selectin expression only minimally, insignificantly according to our results.
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18
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Kim C, Lee JS, Han Y, Chae SY, Jin S, Sung C, Son HJ, Oh SJ, Lee SJ, Oh JS, Cho YP, Kwon TW, Lee DH, Jang S, Kim B, Koglin N, Berndt M, Stephens AW, Moon DH. Glycoprotein IIb/IIIa receptor imaging with 18F-GP1 positron emission tomography for acute venous thromboembolism: an open-label, non-randomized, first-in-human phase 1 study. J Nucl Med 2018; 60:jnumed.118.212084. [PMID: 29959214 PMCID: PMC8833852 DOI: 10.2967/jnumed.118.212084] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Accepted: 06/04/2018] [Indexed: 01/19/2023] Open
Abstract
18F-GP1 is a derivative of elarofiban with a high affinity to activated platelet glycoprotein IIb/IIIa (GPIIb/IIIa) and favorable in vivo characteristics for thrombus imaging in preclinical models. We aimed to explore the detection rate of thromboembolic foci with 18F-GP1 positron emission tomography/computed tomography (PET/CT) in patients with acute venous thromboembolism (VTE), and to evaluate the safety, biodistribution, pharmacokinetics, and metabolism of 18F-GP1. Methods: We studied patients who had signs or symptoms of acute deep vein thrombosis (DVT) of the leg or acute pulmonary embolism (PE) within 14 days prior to 18F-GP1 PET/CT, and had thromboembolic foci confirmed by conventional imaging (n = 10 for DVT and n = 10 for PE). Dynamic whole-body PET/CT images were acquired for up to 140 minutes after injection of 250 MBq of 18F-GP1. Results:18F-GP1 PET/CT was well tolerated without any drug-related adverse events, and showed high initial uptake in spleen, kidney, and blood pool, followed by rapid clearance. The overall image quality was excellent and allowed interpretation in all patients. 18F-GP1 PET/CT identified thromboembolic foci in all 20 patients with either DVT or PE. Vessel-level analysis revealed that 18F-GP1 PET/CT detected 89% (68/76) of vessels with DVT, and 60% (146/245) for PE. Importantly, 18F-GP1 PET/CT showed increased uptake in 32 vessels that were not detected by conventional imaging, of which 25 were located in distal veins of the lower extremity in 12 patients. A positive correlation was found between 18F-GP1 uptake and P-selectin-positive circulating platelets (r = 0.656, P = 0.002). Conclusion:18F-GP1 is a promising PET tracer for imaging acute VTE in patients. 18F-GP1 PET/CT may identify thrombi in distal veins of the leg, where conventional imaging has limitations.
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Affiliation(s)
- Chanwoo Kim
- Department of Nuclear Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jae Seung Lee
- Department of Pulmonology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Youngjin Han
- Department of Vascular Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Sun Young Chae
- Department of Nuclear Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Soyoung Jin
- Department of Nuclear Medicine, Nowon Eulji Medical Center, Eulji University, Seoul, Republic of Korea
| | - Changhwan Sung
- Department of Nuclear Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Hye Joo Son
- Department of Nuclear Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Seung Jun Oh
- Department of Nuclear Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Sang Ju Lee
- Department of Nuclear Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jungsu S. Oh
- Department of Nuclear Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Yong-Pil Cho
- Department of Vascular Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Tae-Won Kwon
- Department of Vascular Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Deok Hee Lee
- Department of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Seongsoo Jang
- Department of Laboratory Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Bohyun Kim
- Department of Laboratory Medicine, Soonchunhyang University Hospital Cheonan, Soonchunhyang University College of Medicine, Cheonan, Chungcheongnam-do, Republic of Korea; and
| | - Norman Koglin
- Piramal Imaging GmbH (now Life Molecular Imaging GmbH), Berlin, Germany
| | - Mathias Berndt
- Piramal Imaging GmbH (now Life Molecular Imaging GmbH), Berlin, Germany
| | | | - Dae Hyuk Moon
- Department of Nuclear Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
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Bertling A, Fender AC, Schüngel L, Rumpf M, Mergemeier K, Geißler G, Sibrowski W, Kelsch R, Waltenberger J, Jakubowski JA, Kehrel BE. Reversibility of platelet P2Y12 inhibition by platelet supplementation: ex vivo and in vitro comparisons of prasugrel, clopidogrel and ticagrelor. J Thromb Haemost 2018; 16:1089-1098. [PMID: 29582544 DOI: 10.1111/jth.14014] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Indexed: 12/16/2022]
Abstract
Essentials Successful outcome of platelet transfusion depends on specific antiplatelet therapy in use. We assessed if ticagrelor, clopidogrel or prasugrel impacts on donor platelet activity ex vivo. Ticagrelor and/or its active metabolite in plasma or bound to platelets can inhibit donor platelets. This might compromise the effectiveness of platelet transfusion therapy. SUMMARY Background Platelet transfusion is the conventional approach to restore platelet function during acute bleeds or surgery, but successful outcome depends on the specific antiplatelet therapy. Notably ticagrelor is associated with inadequate recovery of platelet function after platelet transfusion. We examined whether plasma and/or platelets from ticagrelor-treated patients influence donor platelet function, in comparison with clopidogrel and prasugrel. Methods Platelet transfusion was mimicked ex vivo by mixing naïve donor platelet-rich plasma (PRP) or gel-filtered platelets (GFP) in defined proportions with PRP, plasma or GFP from cardiovascular patients receiving standard care including medication with prasugrel, clopidogrel or ticagrelor (n = 20 each). Blood was taken 4 h after the previous dose. HLA2/HLA28 haplotyping let us distinguish net (all platelet) and individual patient/donor platelet reactivity in mixtures of patient/donor platelets, measured by flow cytometry analysis of ADP-induced fibrinogen binding and CD62P expression. Results ADP responsiveness of donor platelets was dramatically reduced by even low (10%) concentrations of PRP or plasma from ticagrelor-treated patients. Clopidogrel and prasugrel were associated with more modest donor platelet inhibition. GFP from ticagrelor-treated patients but not patients receiving clopidogrel or prasugrel also suppressed donor GFP function upon mixing, suggesting the transfer of ticagrelor from patient platelets to donor platelets. This transfer did not lead to recovery of ADP responsiveness of patient's platelets. Conclusion Collectively, these observations support the concept that ticagrelor and/or its active metabolite in plasma or bound to platelets can inhibit donor platelets, which might compromise the effectiveness of platelet transfusion therapy.
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Affiliation(s)
- A Bertling
- Department of Anaesthesiology, Intensive Care and Pain Medicine, University Hospital Muenster, Muenster, Germany
- Experimental and Clinical Haemostasis, University Hospital Muenster, Muenster, Germany
| | - A C Fender
- Department of Anaesthesiology, Intensive Care and Pain Medicine, University Hospital Muenster, Muenster, Germany
- Experimental and Clinical Haemostasis, University Hospital Muenster, Muenster, Germany
- Institute of Pharmacology, University Hospital Essen, Essen, Germany
| | - L Schüngel
- Department of Anaesthesiology, Intensive Care and Pain Medicine, University Hospital Muenster, Muenster, Germany
- Experimental and Clinical Haemostasis, University Hospital Muenster, Muenster, Germany
| | - M Rumpf
- Department of Anaesthesiology, Intensive Care and Pain Medicine, University Hospital Muenster, Muenster, Germany
- Experimental and Clinical Haemostasis, University Hospital Muenster, Muenster, Germany
| | - K Mergemeier
- Department of Anaesthesiology, Intensive Care and Pain Medicine, University Hospital Muenster, Muenster, Germany
- Experimental and Clinical Haemostasis, University Hospital Muenster, Muenster, Germany
| | - G Geißler
- Institute of Transfusion Medicine, University Hospital Muenster, Muenster, Germany
| | - W Sibrowski
- Institute of Transfusion Medicine, University Hospital Muenster, Muenster, Germany
| | - R Kelsch
- Institute of Transfusion Medicine, University Hospital Muenster, Muenster, Germany
| | - J Waltenberger
- Department of Cardiovascular Medicine, University Hospital Muenster, Muenster, Germany
| | - J A Jakubowski
- Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, USA
| | - B E Kehrel
- Department of Anaesthesiology, Intensive Care and Pain Medicine, University Hospital Muenster, Muenster, Germany
- Experimental and Clinical Haemostasis, University Hospital Muenster, Muenster, Germany
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20
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Huskens D, Sang Y, Konings J, van der Vorm L, de Laat B, Kelchtermans H, Roest M. Standardization and reference ranges for whole blood platelet function measurements using a flow cytometric platelet activation test. PLoS One 2018; 13:e0192079. [PMID: 29389990 PMCID: PMC5794146 DOI: 10.1371/journal.pone.0192079] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Accepted: 01/16/2018] [Indexed: 01/19/2023] Open
Abstract
Introduction Platelet function testing with flow cytometry has additional value to existing platelet function testing for diagnosing bleeding disorders, monitoring anti-platelet therapy, transfusion medicine and prediction of thrombosis. The major challenge is to use this technique as a diagnostic test. The aim of this study is to standardize preparation, optimization and validation of the test kit and to determine reference values in a population of 129 healthy individuals. Methods Platelet function tests with 3 agonists and antibodies against P-selectin, activated αIIbβ3 and glycoprotein Ib (GPIb), were prepared and stored at -20°C until used. Diluted whole blood was added and platelet activation was quantified by the density of activation markers, using flow cytometry. Anti-mouse Ig κ particles were included to validate stability of the test and to standardize results. Reference intervals were determined. Results Blood stored at room temperature (RT) for up to 4h after blood donation and preheated/tested at 37°C resulted in stable results (%CV<10%), in contrast to measuring at RT. The intra-assay %CV was <5%. Incubation of anti-mouse Ig κ particles with antibodies stored for up to 12 months proved to give a stable fluorescence. The inter-individual variation measured in the 129 individuals varied between 23% and 37% for P-selectin expression and αIIbβ3 activation, respectively. Conclusions The current study contributes to the translation of flow cytometry based platelet function testing from a scientific tool to a diagnostic test. Platelet function measurements, using prepared and stored platelet activation kits, are reproducible if executed at 37°C. The reference ranges can be validated in clinical laboratories and ongoing studies are investigating if reduced platelet reactivity in patients with bleeding complications can be detected.
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Affiliation(s)
- Dana Huskens
- Cardiovascular Research Institute Maastricht, Maastricht University Medical Centre, Maastricht, the Netherlands
- Synapse Research Institute, Maastricht, the Netherlands
- * E-mail:
| | - Yaqiu Sang
- Cardiovascular Research Institute Maastricht, Maastricht University Medical Centre, Maastricht, the Netherlands
- Synapse Research Institute, Maastricht, the Netherlands
| | - Joke Konings
- Cardiovascular Research Institute Maastricht, Maastricht University Medical Centre, Maastricht, the Netherlands
- Synapse Research Institute, Maastricht, the Netherlands
| | - Lisa van der Vorm
- Cardiovascular Research Institute Maastricht, Maastricht University Medical Centre, Maastricht, the Netherlands
- Synapse Research Institute, Maastricht, the Netherlands
- Department of Clinical Chemistry and Hematology, Gelre Hospitals, Apeldoorn, The Netherlands
| | - Bas de Laat
- Cardiovascular Research Institute Maastricht, Maastricht University Medical Centre, Maastricht, the Netherlands
- Synapse Research Institute, Maastricht, the Netherlands
| | - Hilde Kelchtermans
- Cardiovascular Research Institute Maastricht, Maastricht University Medical Centre, Maastricht, the Netherlands
- Synapse Research Institute, Maastricht, the Netherlands
| | - Mark Roest
- Cardiovascular Research Institute Maastricht, Maastricht University Medical Centre, Maastricht, the Netherlands
- Synapse Research Institute, Maastricht, the Netherlands
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Peck MJ, Sanders EB, Scherer G, Lüdicke F, Weitkunat R. Review of biomarkers to assess the effects of switching from cigarettes to modified risk tobacco products. Biomarkers 2018; 23:213-244. [PMID: 29297706 DOI: 10.1080/1354750x.2017.1419284] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Context: One approach to reducing the harm caused by cigarette smoking, at both individual and population level, is to develop, assess and commercialize modified risk alternatives that adult smokers can switch to. Studies to demonstrate the exposure and risk reduction potential of such products generally involve the measuring of biomarkers, of both exposure and effect, sampled in various biological matrices.Objective: In this review, we detail the pros and cons for using several biomarkers as indicators of effects of changing from conventional cigarettes to modified risk products.Materials and methods: English language publications between 2008 and 2017 were retrieved from PubMed using the same search criteria for each of the 25 assessed biomarkers. Nine exclusion criteria were applied to exclude non-relevant publications.Results: A total of 8876 articles were retrieved (of which 7476 were excluded according to the exclusion criteria). The literature indicates that not all assessed biomarkers return to baseline levels following smoking cessation during the study periods but that nine had potential for use in medium to long-term studies.Discussion and conclusion: In clinical studies, it is important to choose biomarkers that show the biological effect of cessation within the duration of the study.
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Affiliation(s)
| | | | | | - Frank Lüdicke
- Research & Development, Philip Morris International, Neuchâtel, Switzerland
| | - Rolf Weitkunat
- Research & Development, Philip Morris International, Neuchâtel, Switzerland
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Nagy B, Fulop T, Varga Z, Karányi Z, Magyar M, Oláh L, Papp M, Facskó A, Kappelmayer J, Paragh G, Káplar M, Csongrádi É. Increased levels of platelet activation markers are positively associated with carotid wall thickness and other atherosclerotic risk factors in obese patients. Thromb Haemost 2017; 106:683-92. [DOI: 10.1160/th11-01-0030] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2011] [Accepted: 06/18/2011] [Indexed: 01/15/2023]
Abstract
SummaryThe role of platelets in the development of atherosclerosis and obesity-related prothrombotic state is still under investigation. In this cross-sectional cohort study, we measured the levels of different platelet activation markers and evaluated their relationship with carotid intima-media thickness (IMT) along with other atherosclerotic risk factors in obese patients with or without atherosclerotic co-morbidities. We enrolled 154 obese patients, including 98 with either hypertension, type 2 diabetes mellitus or dyslipidaemia, 56 without these co-morbidities and 62 age- and sex-matched healthy controls. Platelet P-selectin expression and the number of platelet-derived microparticles (PMPs) were measured by flow cytometry; soluble P-selectin levels were analysed by ELISA and Thr715Pro P-selectin polymorphism was determined by PCR-RFLP. Carotid IMT was examined by ultrasonography. The levels of platelet activation parameters were significantly elevated in all obese subjects with increased carotid IMT compared to healthy controls. There was no effect of Thr715Pro genotype on soluble P-selectin levels in obese individuals contrary to normal subjects. Significant and positive association was revealed between carotid IMT and platelet P-selectin (p<0.0001), soluble P-selectin (p=0.039) and PMP (p=0.0001) levels. After adjusting for multiple variables, independent association was found between soluble P-selectin and fibrinogen (p=0.007), PMP levels and body mass index (p<0.0001) as well as platelet P-selectin and carotid IMT (p=0.012) plus plasminogen activator inhibitor-1 (p=0.009). In conclusion, P-selectin and PMP levels showed positive associations with abnormal carotid IMT and other risk factors in obesity suggesting a critical role of enhanced platelet reactivity in atherosclerotic wall alteration.
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The Interaction of Selectins and PSGL-1 as a Key Component in Thrombus Formation and Cancer Progression. BIOMED RESEARCH INTERNATIONAL 2017; 2017:6138145. [PMID: 28680883 PMCID: PMC5478826 DOI: 10.1155/2017/6138145] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Revised: 04/12/2017] [Accepted: 04/23/2017] [Indexed: 12/11/2022]
Abstract
Cellular interaction is inevitable in the pathomechanism of human disease. Formation of heterotypic cellular aggregates, between distinct cells of hematopoietic and nonhematopoietic origin, may be involved in events leading to inflammation and the complex process of cancer progression. Among adhesion receptors, the family of selectins with their ligands have been considered as one of the major contributors to cell-cell interactions. Consequently, the inhibition of the interplay between selectins and their ligands may have potential therapeutic benefits. In this review, we focus on the current evidence on the selectins as crucial modulators of inflammatory, thrombotic, and malignant disorders. Knowing that there is promiscuity in selectin binding, we outline the importance of a key protein that serves as a ligand for all selectins. This dimeric mucin, the P-selectin glycoprotein ligand 1 (PSGL-1), has emerged as a major player in inflammation, thrombus, and cancer development. We discuss the interaction of PSGL-1 with various selectins in physiological and pathological processes with particular emphasis on mechanisms that lead to severe disease.
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24
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Fejes Z, Póliska S, Czimmerer Z, Káplár M, Penyige A, Gál Szabó G, Beke Debreceni I, Kunapuli SP, Kappelmayer J, Nagy B. Hyperglycaemia suppresses microRNA expression in platelets to increase P2RY12 and SELP levels in type 2 diabetes mellitus. Thromb Haemost 2016; 117:529-542. [PMID: 27975100 DOI: 10.1160/th16-04-0322] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2016] [Accepted: 11/26/2016] [Indexed: 12/19/2022]
Abstract
Megakaryocyte (MK)-derived miRNAs have been detected in platelets. Here, we analysed the expression of platelet and circulating miR-223, miR-26b, miR-126 and miR-140 that might be altered with their target mRNAs in type 2 diabetes mellitus (DM2). MiRNAs were isolated from leukocyte-depleted platelets and plasma samples obtained from 28 obese DM2, 19 non-DM obese and 23 healthy individuals. The effect of hyperglycaemia on miRNAs was also evaluated in MKs using MEG-01 and K562 cells under hyperglycaemic conditions after 8 hours up to four weeks. Quantitation of mature miRNA, pre-miRNAs and target mRNA levels (P2RY12 and SELP) were measured by RT-qPCR. To prove the association of miR-26b and miR-140 with SELP (P-selectin) mRNA level, overexpression or inhibition of these miRNAs in MEG-01 MKs was performed using mimics or anti-miRNAs, respectively. The contribution of calpain substrate Dicer to modulation of miRNAs was studied by calpain inhibition. Platelet activation was evaluated via surface P-selectin by flow cytometry. Mature and pre-forms of investigated miRNAs were significantly reduced in DM2, and platelet P2RY12 and SELP mRNA levels were elevated by two-fold at increased platelet activation compared to controls. Significantly blunted miRNA expressions were observed by hyperglycaemia in MEG-01 and K562-MK cells versus baseline values, while the manipulation of miR-26b and miR-140 expression affected SELP mRNA level. Calpeptin pretreatment restored miRNA levels in hyperglycaemic MKs. Overall, miR-223, miR-26b, miR-126 and miR-140 are expressed at a lower level in platelets and MKs in DM2 causing upregulation of P2RY12 and SELP mRNAs that may contribute to adverse platelet function.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Béla Nagy
- Béla Nagy Jr, MD, PhD, Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, Nagyerdei krt. 98. H-4032, Debrecen, Hungary, Tel.: +36 52 340 006, Fax: +36 52 417 631, E-mail:
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Mazor R, Schmid-Schönbein GW. Proteolytic receptor cleavage in the pathogenesis of blood rheology and co-morbidities in metabolic syndrome. Early forms of autodigestion. Biorheology 2016; 52:337-52. [PMID: 26600265 DOI: 10.3233/bir-15045] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Abnormal blood rheological properties seldom occur in isolation and instead are accompanied by other complications, often designated as co-morbidities. In the metabolic syndrome with complications like hypertension, diabetes and lack of normal microvascular blood flow, the underlying molecular mechanisms that simultaneously lead to elevated blood pressure and diabetes as well as abnormal microvascular rheology and other cell dysfunctions have remained largely unknown. In this review, we propose a new hypothesis for the origin of abnormal cell functions as well as multiple co-morbidities. Utilizing experimental models for the metabolic disease with diverse co-morbidities we summarize evidence for the presence of an uncontrolled extracellular proteolytic activity that causes ectodomain receptor cleavage and loss of their associated cell function. We summarize evidence for unchecked degrading proteinase activity, e.g. due to matrix metalloproteases, in patients with hypertension, Type II diabetes and obesity, in addition to evidence for receptor cleavage in the form of receptor fragments and decreased extracellular membrane expression levels. The evidence suggest that a shift in blood rheological properties and other co-morbidities may in fact be derived from a common mechanism that is due to uncontrolled proteolytic activity, i.e. an early form of autodigestion. Identification of the particular proteases involved and the mechanisms of their activation may open the door to treatment that simultaneously targets multiple co-morbidities in the metabolic syndrome.
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Affiliation(s)
- Rafi Mazor
- Department of Bioengineering, Institute of Engineering in Medicine, University of California, San Diego, La Jolla, CA, USA
| | - Geert W Schmid-Schönbein
- Department of Bioengineering, Institute of Engineering in Medicine, University of California, San Diego, La Jolla, CA, USA
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26
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Becs G, Hudák R, Fejes Z, Debreceni IB, Bhattoa HP, Balla J, Kappelmayer J. Haemodiafiltration elicits less platelet activation compared to haemodialysis. BMC Nephrol 2016; 17:147. [PMID: 27737645 PMCID: PMC5064778 DOI: 10.1186/s12882-016-0364-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Accepted: 10/11/2016] [Indexed: 11/20/2022] Open
Abstract
Background Mortality in patients with end-stage renal disorders is often a consequence of cardiovascular complications. Renal replacement therapies may contribute to this morbidity by promoting cellular activation. In renal failure patients peripheral blood samples were investigated for platelet and endothelial cell activation markers to compare the effects of haemodiafiltration (HDF) and haemodialysis (HD). Methods Overall 28 patients were included in the study. Platelet P-selectin and leukocyte - platelet heterotypic aggregates were studied by flow cytometry. Soluble P- and E-selectin values were determined by ELISA, while von Willebrand factor (vWF) antigen levels were measured by immunoturbidimetry. Statistical analysis was done by the SPSS v22 software. Results Platelet surface P-selectin was below 3.0 % in healthy controls, but it was higher during the dialysis after 4 h, 8 % and 14.3 % in HDF and HD, respectively. Monocyte-platelet heterotypic aggregates were significantly elevated after 4 h in both treatments, up to 69.2 % in HDF and to 82.9 % in HD. Soluble P-selectin levels were also significantly elevated by the end of both treatment procedures (p < 0.001), vWF antigen values, however, showed elevation only during HD treatment. Conclusions The attenuated platelet activating effects of HDF compared to HD may contribute to a less unfavourable vascular effect in this treatment modality. Electronic supplementary material The online version of this article (doi:10.1186/s12882-016-0364-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Gergely Becs
- Department of Nephrology, University of Debrecen, Debrecen, Hungary
| | - Renáta Hudák
- Department of Laboratory Medicine, University of Debrecen, Nagyerdei krt. 98, Debrecen, Hungary
| | - Zsolt Fejes
- Department of Laboratory Medicine, University of Debrecen, Nagyerdei krt. 98, Debrecen, Hungary
| | - Ildikó Beke Debreceni
- Department of Laboratory Medicine, University of Debrecen, Nagyerdei krt. 98, Debrecen, Hungary
| | - Harjit Pal Bhattoa
- Department of Laboratory Medicine, University of Debrecen, Nagyerdei krt. 98, Debrecen, Hungary
| | - József Balla
- Department of Nephrology, University of Debrecen, Debrecen, Hungary.,MTA-DE Vascular Biology, Thrombosis and Hemostasis Research Group, Hungarian Academy of Sciences, Debrecen, Hungary
| | - János Kappelmayer
- Department of Laboratory Medicine, University of Debrecen, Nagyerdei krt. 98, Debrecen, Hungary.
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Stasko J, Galajda P, Ivanková J, Hollý P, Rozborilová E, Kubisz P. Soluble P-Selectin During a Single Hemodialysis Session in Patients With Chronic Renal Failure and Erythropoietin Treatment. Clin Appl Thromb Hemost 2016; 13:410-5. [PMID: 17911193 DOI: 10.1177/1076029607303348] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
In several studies, hemodialysis (HD) patients treated with recombinant human erythropoietin (rHuEPO) because of renal anemia showed increased levels of soluble adhesion molecules. The purpose of the study was to investigate the changes of soluble P-selectin (sSELP) and its relationship to platelet activation during a single HD session in patients with long-term rHuEPO treatment. Fifty-two HD patients with chronic renal failure were involved—26 with rHuEPO treatment (EPO group) and 26 without (non-EPO group). Thirty healthy subjects served as the control group. The sSELP, β-thromboglobulin, and platelet factor 4 plasma levels were measured before and after a single 4-hour HD session on a cuprophane dialyzer. The basal β-thromboglobulin and platelet factor 4 plasma levels were significantly increased in both HD groups compared with healthy controls but did not change after a single HD session, except for a significant decrease of platelet factor 4 in the non-EPO group. The predialysis sSELP plasma levels did not differ significantly compared with those of the healthy controls, but there was a significant increase of sSELP levels after a single HD session in both groups (EPO, P < .005; non-EPO, P < .05, respectively). These results suppose that the increased sSELP level was released from platelets during the course of a single HD session. The more significant increase of the sSELP plasma levels in EPO group during HD indicates that platelets are more activated in patients with long-term rHuEPO treatment, and this fact could partially explain the suspected tendency for thrombosis in these patients.
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Affiliation(s)
- Ján Stasko
- National Centre of Haemostasis and Thrombosis, Comenius University, Martin, Slovakia
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Choi E, Branch C, Cui MH, Yazdanbakhsh K, Mohandas N, Billett HH, Shi PA. No evidence for cell activation or brain vaso-occlusion with plerixafor mobilization in sickle cell mice. Blood Cells Mol Dis 2015; 57:67-70. [PMID: 26852658 DOI: 10.1016/j.bcmd.2015.12.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Accepted: 12/18/2015] [Indexed: 10/22/2022]
Abstract
Gene therapy for sickle cell disease is currently in active trials. Collecting hematopoietic progenitor cells safely and effectively is challenging, however, because granulocyte colony stimulating factor, the drug used most commonly for mobilization, can cause life-threatening vaso-occlusion in patients with sickle cell disease, and bone marrow harvest requires general anesthesia and multiple hip bone punctures. Plerixafor is an inhibitor of the CXCR4 chemokine receptor on hematopoietic progenitor cells, blocking its binding to SDF-1 (CXCL12) on bone marrow stroma. In support of a clinical trial in patients with sickle cell disease of plerixafor mobilization (NCT02193191), we administered plerixafor to sickle cell mice and found that it mobilizes hematopoietic progenitor cells without evidence of concomitant cell activation or brain vaso-occlusion.
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Affiliation(s)
- Erika Choi
- Lindsley F. Kimball Research Institute, New York Blood Center, 310 East 67th St, New York, NY 10065, United States
| | - Craig Branch
- Department of Radiology, Albert Einstein College of Medicine, 1300 Morris Park Ave, Bronx, NY 10461, United States
| | - Min-Hui Cui
- Department of Radiology, Albert Einstein College of Medicine, 1300 Morris Park Ave, Bronx, NY 10461, United States
| | - Karina Yazdanbakhsh
- Lindsley F. Kimball Research Institute, New York Blood Center, 310 East 67th St, New York, NY 10065, United States
| | - Narla Mohandas
- Lindsley F. Kimball Research Institute, New York Blood Center, 310 East 67th St, New York, NY 10065, United States
| | - Henny H Billett
- Department of Medicine, Albert Einstein College of Medicine, 1300 Morris Park Ave, Bronx, NY 10461, United States
| | - Patricia A Shi
- Lindsley F. Kimball Research Institute, New York Blood Center, 310 East 67th St, New York, NY 10065, United States; Department of Medicine, Albert Einstein College of Medicine, 1300 Morris Park Ave, Bronx, NY 10461, United States.
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Abstract
Protein kinase Cθ (PKCθ) is a key enzyme in T-lymphocytes where it plays an important role in signal transduction downstream of the activated T-cell receptor (TCR) and the CD28 co-stimulatory receptor. Antigenic stimulation of T-cells triggers PKCθ translocation to the centre of the immunological synapse (IS) at the contact site between antigen-specific T-cells and antigen-presenting cells (APCs). The IS-residing PKCθ phosphorylates and activates effector molecules that transduce signals into distinct subcellular compartments and activate the transcription factors, nuclear factor κB (NF-κB), nuclear factor of activated T-cells (NFAT) and activating protein 1 (AP-1), which are essential for the induction of T-cell-mediated responses. Besides its major biological role in T-cells, PKCθ is expressed in several additional cell types and is involved in a variety of distinct physiological and pathological phenomena. For example, PKCθ is expressed at high levels in platelets where it regulates signal transduction from distinct surface receptors, and is required for optimal platelet activation and aggregation, as well as haemostasis. In addition, PKCθ is involved in physiological processes regulating insulin resistance and susceptibility to obesity, and is expressed at high levels in gastrointestinal stromal tumours (GISTs), although the functional importance of PKCθ in these processes and cell types is not fully clear. The present article briefly reviews selected topics relevant to the biological roles of PKCθ in health and disease.
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Guo SW, Ding D, Geng JG, Wang L, Liu X. P-selectin as a potential therapeutic target for endometriosis. Fertil Steril 2015; 103:990-1000.e8. [DOI: 10.1016/j.fertnstert.2015.01.001] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Revised: 12/15/2014] [Accepted: 01/01/2015] [Indexed: 12/14/2022]
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Ramackers W, Friedrich L, Klose J, Vondran F, Bergmann S, Schüttler W, Johanning K, Werwitzke S, Trummer A, Bröcker V, Klempnauer J, Winkler M, Tiede A. Recombinant human antithrombin prevents xenogenic activation of hemostasis in a model of pig-to-human kidney transplantation. Xenotransplantation 2014; 21:367-75. [DOI: 10.1111/xen.12104] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Accepted: 03/14/2014] [Indexed: 12/17/2022]
Affiliation(s)
- Wolf Ramackers
- Department of General, Visceral and Transplantation Surgery; Hannover Medical School; Hannover Germany
| | - Lars Friedrich
- Department of Anesthesiology and Intensive Care; Hannover Medical School; Hannover Germany
| | - Johannes Klose
- Department of General, Visceral and Transplantation Surgery; Hannover Medical School; Hannover Germany
| | - Florian Vondran
- Department of General, Visceral and Transplantation Surgery; Hannover Medical School; Hannover Germany
| | - Sabine Bergmann
- Department of General, Visceral and Transplantation Surgery; Hannover Medical School; Hannover Germany
| | - Wolfgang Schüttler
- Department of General, Visceral and Transplantation Surgery; Hannover Medical School; Hannover Germany
| | - Kai Johanning
- Department of Anesthesiology and Intensive Care; Hannover Medical School; Hannover Germany
| | - Sonja Werwitzke
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation; Hannover Medical School; Hannover Germany
| | - Arne Trummer
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation; Hannover Medical School; Hannover Germany
| | - Verena Bröcker
- Department of Pathology; Hannover Medical School; Hannover Germany
| | - Jürgen Klempnauer
- Department of General, Visceral and Transplantation Surgery; Hannover Medical School; Hannover Germany
| | - Michael Winkler
- Department of General, Visceral and Transplantation Surgery; Hannover Medical School; Hannover Germany
| | - Andreas Tiede
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation; Hannover Medical School; Hannover Germany
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Enhanced thrombin generation in women with a history of oral contraception-related venous thrombosis. Thromb Res 2013; 132:621-6. [DOI: 10.1016/j.thromres.2013.09.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2013] [Revised: 09/02/2013] [Accepted: 09/09/2013] [Indexed: 11/18/2022]
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Blann AD. Soluble P-selectin: the next step. Thromb Res 2013; 133:3-4. [PMID: 24216322 DOI: 10.1016/j.thromres.2013.10.030] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Revised: 10/21/2013] [Accepted: 10/21/2013] [Indexed: 12/22/2022]
Affiliation(s)
- Andrew D Blann
- Haemostasis, Thrombosis and Vascular Biology Unit, University of Birmingham Centre for Cardiovascular Sciences, Department of Medicine, City Hospital, Birmingham, B18 7QH, UK.
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Miszti-Blasius K, Felszeghy S, Kiss C, Benkő I, Géresi K, Megyeri A, Hevessy Z, Kappelmayer J. P-selectin glycoprotein ligand-1 deficiency augments G-CSF induced myeloid cell mobilization. Naunyn Schmiedebergs Arch Pharmacol 2013; 387:109-18. [PMID: 24091681 DOI: 10.1007/s00210-013-0913-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2013] [Accepted: 09/02/2013] [Indexed: 01/11/2023]
Abstract
The effect of granulocyte colony-stimulating factor (G-CSF) was investigated in P-selectin glycoprotein ligand-1 (PSGL-1) deficient (PSGL-1(-/-)) and wild-type (PSGL-1(+/+)) mice to establish the role of this mucin in myeloid cell mobilization. G-CSF activates tissue proteases that cleave adhesion molecules, thus enhances the mobilization of myeloid cells and haematopoietic stem cells. Cytopenia was induced with a single dose of cyclophosphamide. In PSGL-1(-/-) animals, we observed a delayed extravasation of mature myeloid cells from the peripheral vessels into the tissue compartments and their faster mobilization from the bone marrow. Subsequently, animals received G-CSF twice a day for 4 days. Neutrophil and monocyte counts increased upon completion of G-CSF treatment and both values were significantly higher in PSGL-1(-/-) mice; 47.7 versus 28.3 G/l for neutrophils and 4.1 versus 2.0 G/l for monocytes. The ratio of atypical myeloid cells was also elevated. Analyzing the causes of the above differences, we identified a 4-fold increase in the colony-forming unit (CFU-GM) counts of the peripheral blood in PSGL-1(-/-) mice, compared to wild-type animals. A significantly elevated number of CFU-GM was detected also in the femurs of PSGL-1(-/-) mice, 4 and 5 days after cyclophosphamide treatment and these values paralleled with the elevation of CD34+/CD117+ stem cell counts in the peripheral blood. Our data suggest, that in the absence of PSGL-1, G-CSF was more potent in elevating absolute myeloid cell numbers by acting on cell release from the bone marrow, maturation from circulating precursor cells in the peripheral blood and prolonged retainment in the circulation.
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Affiliation(s)
- Kornél Miszti-Blasius
- Department of Laboratory Medicine, Medical and Health Science Center, University of Debrecen, Nagyerdei krt 98, 4032, Debrecen, Hungary
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Johansson MW, Kruger SJ, Schiebler ML, Evans MD, Sorkness RL, Denlinger LC, Busse WW, Jarjour NN, Montgomery RR, Mosher DF, Fain SB. Markers of vascular perturbation correlate with airway structural change in asthma. Am J Respir Crit Care Med 2013; 188:167-78. [PMID: 23855693 DOI: 10.1164/rccm.201301-0185oc] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
RATIONALE Air trapping and ventilation defects on imaging are characteristics of asthma. Airway wall thickening occurs in asthma and is associated with increased bronchial vascularity and vascular permeability. Vascular endothelial cell products have not been explored as a surrogate to mark structural airway changes in asthma. OBJECTIVES Determine whether reporters of vascular endothelial cell perturbation correlate with airway imaging metrics in patients with asthma of varying severity. METHODS Plasma from Severe Asthma Research Program subjects was analyzed by ELISAs for soluble von Willebrand factor mature protein (VWF:Ag) and propeptide (VWFpp), P-selectin, and platelet factor 4. Additional subjects were analyzed over 48 hours after whole-lung antigen challenge. We calculated ventilation defect volume by hyperpolarized helium-3 magnetic resonance imaging and areas of low signal density by multidetector computed tomography (less than -856 Hounsfield units [HU] at functional residual capacity and -950 HU at total lung capacity [TLC]). MEASUREMENTS AND MAIN RESULTS VWFpp and VWFpp/Ag ratio correlated with and predicted greater percentage defect volume on hyperpolarized helium-3 magnetic resonance imaging. P-selectin correlated with and predicted greater area of low density on chest multidetector computed tomography less than -950 HU at TLC. Platelet factor 4 did not correlate. Following whole-lung antigen challenge, variation in VWFpp, VWFpp/Ag, and P-selectin among time-points was less than that among subjects, indicating stability and repeatability of the measurements. CONCLUSIONS Plasma VWFpp and P-selectin may be useful as surrogates of functional and structural defects that are evident on imaging. The results raise important questions about why VWFpp and P-selectin are associated specifically with different imaging abnormalities.
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Affiliation(s)
- Mats W Johansson
- Department of Biomolecular Chemistry, University of Wisconsin, 4285A Medical Sciences Center, 1300 University Avenue, Madison, WI 53706, USA.
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Liou JT, Lee CM, Lin YC, Chen CY, Liao CC, Lee HC, Day YJ. P-selectin is required for neutrophils and macrophage infiltration into injured site and contributes to generation of behavioral hypersensitivity following peripheral nerve injury in mice. Pain 2013; 154:2150-2159. [PMID: 23831400 DOI: 10.1016/j.pain.2013.06.042] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Revised: 06/25/2013] [Accepted: 06/25/2013] [Indexed: 10/26/2022]
Abstract
Growing evidence suggests that leukocyte extravasation is initiated by the interaction of selectins with their ligands; as well as an essential role for P-selectin in the initial recruitment of inflammatory cells to sites of inflammation. In this study, P-selectin-deficient (P-sel-/-) mice were used to test the hypothesis that lack of P-selectin would attenuate the recruitment of inflammatory cells to the site of inflammation, thereby modulating pain in a murine chronic neuropathic pain model. Nociceptive sensitization and the microenvironment of the peripheral injury site were studied in wild-type (P-sel+/+) and P-selectin-deficient (P-sel-/-) mice after partial sciatic nerve ligation (PSNL). Variables measured included myeloperoxidase (MPO) activity, several inflammatory cell infiltration profiles, cytokines, and endogenous opioid peptide expression in damaged nerves. Results indicate that behavioral hypersensitivity, MPO activity, and infiltration of neutrophils and macrophages were attenuated in P-sel-/- mice after PSNL. Proinflammatory cytokines, tumor necrosis factor α, and interleukin (IL)-6, were reduced in damaged nerves following PSNL; however, several antiinflammatory cytokines - IL-1Ra, IL-4, and IL-10 - were significantly increased in P-sel-/- mice. In addition, endogenous opioid peptides mRNA was significantly lower in P-sel-/- mice compared with P-sel +/+ mice. The current results demonstrated that the absence of P-selectin in mice leads to an altered microenvironment that attenuated behavioral hypersensitivity. The specific role of P-selectin could have been a result of decreased neutrophils, as well as the accumulation of macrophages at the site of injury, which may subsequently modulate the inflammatory cytokine expression and impact behavioral hypersensitivity within the injured nerve.
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Affiliation(s)
- Jiin-Tarng Liou
- Department of Anesthesiology, Chang Gung Memorial Hospital, Linkou, Taiwan, ROC Transgenic & Molecular Immunogenetics Laboratory, Chang Gung Memorial Hospital, Linkou, Taiwan, ROC Department of Medicine, Chang Gung University, Linkou, Taiwan, ROC Department of Medical Research and Development, Chang Gung Memorial Hospital, Linkou, Taiwan, ROC Graduate Institutes of Clinical Medical Sciences, Chang Gung University, Linkou, Taiwan, ROC Department of Anesthesiology, National Defense Medical Center and Tri-Service General Hospital, Taipei, Taiwan, ROC
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von Papen M, Gambaryan S, Schütz C, Geiger J. Determination of ATP and ADP Secretion from Human and Mouse Platelets by an HPLC Assay. ACTA ACUST UNITED AC 2013; 40:109-16. [PMID: 23652982 DOI: 10.1159/000350294] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2012] [Accepted: 02/26/2013] [Indexed: 12/25/2022]
Abstract
BACKGROUND Secretion of ADP and ATP is an essential prerequisite for platelet aggregation. Impaired nucleotide secretion can cause aggregation defects and increased bleeding risk. Quantitative determination of platelet nucleotide content and exocytosis is thus of importance for the characterization and diagnosis of bleeding phenotypes. For transgenic animal models with hemostatic defects analysis of potential secretion defects is as well imperative. METHODS Supernatants of washed platelets and platelet-rich plasma were analyzed by HPLC for ADP and ATP concentration. Calibration of the HPLC data was accomplished with an internal standard compensating for loss of analyte, detection sensitivity, and interference of the biomatrix. RESULTS HPLC analysis of nucleotide secretion was carried out with human and mouse platelets. Detection limits were determined for washed platelet and platelet-rich plasma samples. In the physiological concentration range linearity with respect to the peak area is maintained. CONCLUSION The method combines reasonable sensitivity with robustness. The internal standard ensures reliable quantification of nucleotide concentrations even in presence of otherwise interfering substances. The low sample consumption renders possible the application to analysis of small samples like in mouse experiments.
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Affiliation(s)
- Michael von Papen
- Institute for Clinical Biochemistry and Pathobiochemistry, University of Würzburg, Germany
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38
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Nagy V, Kolozsvari B, Balogh Z, Csutak A, Kasza M, Nagy B, Kardos L, Berta A, Pfliegler G. Increased level of platelet P-selectin in nonarteritic anterior ischemic optic neuropathy. Graefes Arch Clin Exp Ophthalmol 2012; 251:917-22. [PMID: 23229830 DOI: 10.1007/s00417-012-2196-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2012] [Revised: 10/04/2012] [Accepted: 10/30/2012] [Indexed: 10/27/2022] Open
Abstract
PURPOSE P-selectin receptor is expressed in platelets and endothelial cells in a cell-activation-dependent manner. Platelet P-selectin (CD62) levels may become elevated in a number of vasoocclusive diseases, including arteriosclerosis, atherothrombosis, and diabetes mellitus (DM). Nonarteritic anterior ischemic optic neuropathy (NAION) is associated with a sudden loss of vision due to the vascular insufficiency of ciliary arteries supplying the optic nerve. In this study, our aim was to investigate the presence of increased platelet reactivity in the development of NAION. METHODS Twenty-one NAION patients, 39 healthy control subjects, and 44 patients suffering from diabetes mellitus (DM) were examined in our case-control, pilot study. Platelet activation was investigated by flow cytometric analysis of the mean fluorescence intensity (MFI) of CD62 on platelets. These results were compared among the different study groups. RESULTS NAION patients showed considerably although not significantly (p = 0.2017) higher P-selectin MFI values (71.98 ± 40.30) versus healthy subjects (55.48 ± 20.95), insulin-dependent DM patients (50.02 ± 13.08), and non-insulin-dependent DM subjects (54.72 ± 24.74). However, logistic regression analysis resulted in a statistically significant adjusted effect on the odds of NAION when CD62 MFI values were logarithmically transformed (OR: 3.86, 95 % CI: 1.10 to 13.53, p = 0.0346). CONCLUSION Elevated platelet CD62 positivity may be related to NAION, suggesting a possible role of enlarged platelet activity in the generation of this type of ischemic optic neuropathy.
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Affiliation(s)
- Valeria Nagy
- Department of Ophthalmology, Medical and Health Science Center, University of Debrecen, Nagyerdei krt 98, 4012 Debrecen, Hungary.
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Reményi G, Szász R, Debreceni IB, Szarvas M, Batár P, Nagy B, Kappelmayer J, Udvardy M. Comparison of coated-platelet levels in patients with essential thrombocythemia with and without hydroxyurea treatment. Platelets 2012; 24:486-92. [DOI: 10.3109/09537104.2012.731112] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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40
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Colkesen Y, Muderrisoglu H. The role of mean platelet volume in predicting thrombotic events. Clin Chem Lab Med 2012; 50:631-4. [PMID: 22112054 DOI: 10.1515/cclm.2011.806] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Studies on platelet function have accelerated and gained popularity since the advent of novel treatment modalities and techniques on atherosclerotic vascular disease, such as antiplatelet drugs and stents. Today it is widely known that platelets exert a fundamental role in inflammation in addition to their long known role in homeostasis and thrombotic events. Interaction with endothelial cells and leukocytes mediates inflammation, contributes to atherogenesis and modulates immune activity. Platelet activation which is a central factor in many arterial disorders may be triggered by multiple pathways. Platelet activation is shown as forming a larger shape, aggregation and releasing various active contents. Mean platelet volume is a marker of platelet size, function and activation. Increased mean platelet volume is shown by active and large platelets that release more thromboxane A2 than smaller ones. The aim of this review is to determine whether early detection of platelet activation via increased mean platelet volume would help to recognize the pro-inflammatory state and administer appropriate and effective treatment properly. An easily detectable marker by using a prompt and functional technique would help our approach to inflammation caused by platelets.
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Affiliation(s)
- Yucel Colkesen
- Department of Cardiology, Baskent University, Faculty of Medicine, Adana, Turkey.
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41
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Rich DQ, Kipen HM, Huang W, Wang G, Wang Y, Zhu P, Ohman-Strickland P, Hu M, Philipp C, Diehl SR, Lu SE, Tong J, Gong J, Thomas D, Zhu T, Zhang JJ. Association between changes in air pollution levels during the Beijing Olympics and biomarkers of inflammation and thrombosis in healthy young adults. JAMA 2012; 307:2068-78. [PMID: 22665106 PMCID: PMC4049319 DOI: 10.1001/jama.2012.3488] [Citation(s) in RCA: 284] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
CONTEXT Air pollution is a risk factor for cardiovascular diseases (CVD), but the underlying biological mechanisms are not well understood. OBJECTIVE To determine whether markers related to CVD pathophysiological pathways (biomarkers for systemic inflammation and thrombosis, heart rate, and blood pressure) are sensitive to changes in air pollution. DESIGN, SETTING, AND PARTICIPANTS Using a quasi-experimental opportunity offered by greatly restricted air pollution emissions during the Beijing Olympics, we measured pollutants daily and the outcomes listed below in 125 healthy young adults before, during, and after the 2008 Olympics (June 2-October 30). We used linear mixed-effects models to estimate the improvement in outcome levels during the Olympics and the anticipated reversal of outcome levels after pollution controls ended to determine whether changes in outcome levels were associated with changes in pollutant concentrations. MAIN OUTCOME MEASURES C-reactive protein (CRP), fibrinogen, von Willebrand factor, soluble CD40 ligand (sCD40L), soluble P-selectin (sCD62P) concentrations; white blood cell count (WBC); heart rate; and blood pressure. RESULTS Concentrations of particulate and gaseous pollutants decreased substantially (-13% to -60%) from the pre-Olympic period to the during-Olympic period. Using 2-sided tests conducted at the .003 level, we observed statistically significant improvements in sCD62P levels by -34.0% (95% CI, -38.4% to -29.2%; P < .001) from a pre-Olympic mean of 6.29 ng/mL to a during-Olympic mean of 4.16 ng/mL and von Willebrand factor by -13.1% (95% CI, -18.6% to -7.5%; P < .001) from 106.4% to 92.6%. After adjustments for multiple comparisons, changes in the other outcomes were not statistically significant. In the post-Olympic period when pollutant concentrations increased, most outcomes approximated pre-Olympic levels, but only sCD62P and systolic blood pressure were significantly worsened from the during-Olympic period. The fraction of above-detection-limit values for CRP (percentage ≥ 0.3 mg/L) was reduced from 55% in the pre-Olympic period to 46% in the during-Olympic period and reduced further to 36% in the post-Olympic period. Interquartile range increases in pollutant concentrations were consistently associated with statistically significant increases in fibrinogen, von Willebrand factor, heart rate, sCD62P, and sCD40L concentrations. CONCLUSIONS Changes in air pollution levels during the Beijing Olympics were associated with acute changes in biomarkers of inflammation and thrombosis and measures of cardiovascular physiology in healthy young persons. These findings are of uncertain clinical significance.
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Affiliation(s)
- David Q Rich
- Department of Community and Preventive Medicine, School of Medicine and Dentistry, University of Rochester, Rochester, New York, USA
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Pennogenin tetraglycoside stimulates secretion-dependent activation of rat platelets: Evidence for critical roles of adenosine diphosphate receptor signal pathways. Thromb Res 2012; 129:e209-16. [DOI: 10.1016/j.thromres.2012.02.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2011] [Revised: 01/19/2012] [Accepted: 02/06/2012] [Indexed: 11/22/2022]
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Hematological, immunological, and cardiovascular changes in individuals residing in a polluted city of India: A study in Delhi. Int J Hyg Environ Health 2012; 215:306-11. [DOI: 10.1016/j.ijheh.2011.08.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2011] [Revised: 08/03/2011] [Accepted: 08/16/2011] [Indexed: 11/17/2022]
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Johansson MW, Han ST, Gunderson KA, Busse WW, Jarjour NN, Mosher DF. Platelet activation, P-selectin, and eosinophil β1-integrin activation in asthma. Am J Respir Crit Care Med 2012; 185:498-507. [PMID: 22227382 DOI: 10.1164/rccm.201109-1712oc] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
RATIONALE Eosinophil β1-integrin activation correlates inversely with FEV1 and directly with eosinophil-bound P-selectin in subjects with nonsevere allergic asthma. OBJECTIVES Determine the relationships between β1-integrin activation and pulmonary function or eosinophil-bound P-selectin in subjects with asthma of varying severity and discern the source of eosinophil-bound P-selectin. METHODS Blood was assayed by flow cytometry for P-selectin and activated β1-integrin on eosinophils and platelets. Plasma was analyzed with ELISA for soluble P-selectin, platelet factor 4, and thrombospondin-1. MEASUREMENTS AND MAIN RESULTS Activated β1-integrin correlated with eosinophil-bound P-selectin among all subjects with asthma even though activated β1-integrin was higher in subjects with nonsevere asthma than severe asthma. Activated β1-integrin correlated inversely with FEV1 corrected for FVC only in younger subjects with nonsevere asthma. Paradoxically, platelet surface P-selectin, a platelet activation marker, was low in subjects with severe asthma, whereas plasma platelet factor 4, a second platelet activation marker, was high. Correlations indicated that P-selectin-positive platelets complexed to eosinophils are the major source of the eosinophil-bound P-selectin associated with β1-integrin activation. After whole-lung antigen challenge of subjects with nonsevere asthma, a model of asthma exacerbation known to cause platelet activation, circulating eosinophils bearing P-selectin and activated β1-integrin disappeared. CONCLUSIONS The relationship between eosinophil β1-integrin activation and pulmonary function was replicated only for younger subjects with nonsevere asthma. However, we infer that platelet activation and binding of activated platelets to eosinophils followed by P-selectin-mediated eosinophil β1-integrin activation occur in both nonsevere and severe asthma with rapid movement of platelet-eosinophil complexes into the lung in more severe disease.
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Affiliation(s)
- Mats W Johansson
- Department of Biomolecular Chemistry, University of Wisconsin, Madison, 53706, USA.
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Skoglund C, Wetterö J, Bengtsson T. C1q regulates collagen-dependent production of reactive oxygen species, aggregation and levels of soluble P-selectin in whole blood. Immunol Lett 2011; 142:28-33. [PMID: 22142906 DOI: 10.1016/j.imlet.2011.11.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2011] [Revised: 11/10/2011] [Accepted: 11/15/2011] [Indexed: 01/22/2023]
Abstract
Blood platelets express several receptors involved in immunity (e.g. complement-, toll-like- and Fcγ-receptors) and release inflammatory mediators. Furthermore, formation of platelet-leukocyte aggregates has an important role during inflammatory conditions such as coronary artery disease. Thus, apart from their well-known role in haemostasis, platelets are today also recognized as cells with immuno-modulatory properties. We have previously reported regulatory effects of complement protein 1q (C1q) on platelet activation in experimental setups using isolated cells. In the present study we have proceeded by investigating effects of C1q on collagen-induced aggregation, production of reactive oxygen species (ROS), formation of platelet-leukocyte aggregates and levels of soluble P-selectin in whole blood. Impedance measurements showed that C1q inhibited collagen-induced aggregation whereas it potentiated the collagen-provoked production of ROS in a luminol-dependent chemiluminescence assay. The effects of C1q on aggregation and ROS-production were dependent upon platelets, as they were no longer observed in presence of the platelet (GpIIb/IIIa) inhibitor Reopro. Furthermore, the levels of soluble P-selectin were found to be lowered upon treatment with C1q prior to addition of collagen. There was also a trend towards a decreased formation of large platelet-leukocyte aggregates in collagen-stimulated whole blood following C1q treatment. In conclusion, our data indicate that C1q could have a role in regulating platelet activation and associated leukocyte recruitment during vessel wall injury. This has implications for inflammatory disorders such as coronary artery disease.
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Affiliation(s)
- Caroline Skoglund
- Division of Molecular Surface Physics and Nanoscience, Department of Physics, Chemistry and Biology, Linköping University, SE-581 83 Linköping, Sweden.
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Shemirani AH, Nagy B, Takáts AT, Zsóri KS, András C, Kappelmayer J, Csiki Z. Increased mean platelet volume in primary Raynaud's phenomenon. Platelets 2011; 23:312-6. [PMID: 21942753 DOI: 10.3109/09537104.2011.618563] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
We hypothesized that mean platelet volume (MPV), a reliable marker of platelet activation, might be elevated in primary Raynaud's phenomenon (PRP) even if there was no thrombotic complication in our subjects. In this retrospective-cohort study, we examined the clinical value of MPV in 200 patients with PRP and 116 clinical controls, and measured MPV and platelet P-selectin (CD62P) in all study participants. We also evaluated the effect of age, gender, and disease duration on these platelet activation markers in PRP. MPV and CD62 positivities were significantly (p<0.001) elevated in patients with PRP compared with controls. These differences retained when patients and controls were analyzed according to age, gender, and the disease duration. In logistic regression analysis, MPV (OR: 15.8, 95% CI: 8.14-30.64, p<0.001) and CD62P (OR: 11.3, 95% CI: 4.85-26.12, p<0.001) were found to be independently associated with PRP. In conclusion, increased MPV is independently related to PRP, and its level was not influenced by age, gender, and the duration of PRP.
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Affiliation(s)
- Amir-Houshang Shemirani
- Clinical Research Center, Medical and Health Science Center, University of Debrecen, Debrecen, Hungary.
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47
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Protein kinase C-theta in platelet activation. FEBS Lett 2011; 585:3208-15. [DOI: 10.1016/j.febslet.2011.09.014] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2011] [Revised: 08/20/2011] [Accepted: 09/12/2011] [Indexed: 02/05/2023]
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48
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Jaumdally RJ, Lip GYH, Varma C, Blann AD. Impact of High-Dose Atorvastatin on Endothelial, Platelet, and Angiogenic Indices. Angiology 2011; 62:571-8. [DOI: 10.1177/0003319711401904] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Lipid lowering with statins improves morbidity and mortality, particularly in diabetics, and may have additional nonlipid effects. South Asians (SAs) are at higher risk of cardiovascular disease and diabetes compared with white Europeans (WEs). We hypothesized that abnormal endothelial (marked by von Willebrand factor), angiogenesis (VEGF, angiopoietins 1 and 2) and platelet function (soluble P selectin, soluble CD40L) improve with statin treatment in diabetics in different ethnic groups. Plasma was obtained before and 8 weeks after treatment with atorvastatin (80 mg/day) by SAs and WEs with or without diabetes. Research indices were measured by enzyme-linked-immunosorbent assay (ELISA). Treatment increased angiopoietin-2 ( P < .04) in all groups regardless of diabetes or ethnicity. In those free of diabetes, angiopoietin-2 increased 3-fold, whereas in diabetes, it increased 2-fold. We suggest that an additional effect of statins is to increase levels of growth factor angiopoietin-2 in the direction of normality. This effect is weaker in participants with diabetes.
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Affiliation(s)
- Rumi J. Jaumdally
- Haemostasis, Thrombosis and Vascular Biology Unit, University of Birmingham Centre for Cardiovascular Sciences, City Hospital, Birmingham, UK
| | - Gregory Y. H. Lip
- Haemostasis, Thrombosis and Vascular Biology Unit, University of Birmingham Centre for Cardiovascular Sciences, City Hospital, Birmingham, UK
| | - Chetan Varma
- Haemostasis, Thrombosis and Vascular Biology Unit, University of Birmingham Centre for Cardiovascular Sciences, City Hospital, Birmingham, UK
| | - Andrew D. Blann
- Haemostasis, Thrombosis and Vascular Biology Unit, University of Birmingham Centre for Cardiovascular Sciences, City Hospital, Birmingham, UK
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Nagy B, Jin J, Ashby B, Reilly MP, Kunapuli SP. Contribution of the P2Y12 receptor-mediated pathway to platelet hyperreactivity in hypercholesterolemia. J Thromb Haemost 2011; 9:810-9. [PMID: 21261805 PMCID: PMC3071452 DOI: 10.1111/j.1538-7836.2011.04217.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
BACKGROUND In hypercholesterolemia, platelets demonstrate increased reactivity and promote the development of cardiovascular disease. OBJECTIVE This study was carried out to investigate the contribution of the ADP receptor P2Y12-mediated pathway to platelet hyperreactivity due to hypercholesterolemia. METHODS Low-density lipoprotein receptor-deficient mice and C57Bl/6 wild-type mice were fed on normal chow and high-fat (Western or Paigen) diets for 8 weeks to generate differently elevated cholesterol levels. P2Y12 receptor-induced functional responses via G(i) signaling were studied ex vivo when washed murine platelets were activated by 2MeSADP and PAR4 agonist AYPGKF in the presence and absence of indomethacin. Platelet aggregation and secretion, α(IIb)β(3) receptor activation and the phosphorylation of extracellular signal-regulated protein kinase (ERK) and Akt were analyzed. RESULTS Plasma cholesterol levels ranged from 69 ± 10 to 1011 ± 185 mg dL(-1) depending on diet in mice with different genotypes. Agonist-dependent aggregation, dense and α-granule secretion and JON/A binding were gradually and significantly (P < 0.05) augmented at low agonist concentration in correlation with the increasing plasma cholesterol levels, even if elevated thromboxane generation was blocked. These functional responses were induced via increased levels of G(i) -mediated ERK and Akt phosphorylation in hypercholesterolemic mice vs. normocholesterolemic animals. In addition, blocking of the P2Y12 receptor by AR-C69931MX (Cangrelor) resulted in strongly reduced platelet aggregation in mice with elevated cholesterol levels compared with normocholesterolemic controls. CONCLUSIONS These data revealed that the P2Y12 receptor pathway was substantially involved in platelet hyperreactivity associated with mild and severe hypercholesterolemia.
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Affiliation(s)
- Béla Nagy
- Department of Physiology, Temple University School of Medicine, Philadelphia, PA, USA
| | - Jianguo Jin
- Department of Physiology, Temple University School of Medicine, Philadelphia, PA, USA
- Sol Sherry Thrombosis Research Center, Temple University School of Medicine, Philadelphia, PA, USA
| | - Barrie Ashby
- Department of Pharmacology, Temple University School of Medicine, Philadelphia, PA, USA
| | - Michael P. Reilly
- Cardeza Foundation for Hematologic Research, Thomas Jefferson University, Philadelphia, PA, USA
| | - Satya P. Kunapuli
- Department of Physiology, Temple University School of Medicine, Philadelphia, PA, USA
- Department of Pharmacology, Temple University School of Medicine, Philadelphia, PA, USA
- Sol Sherry Thrombosis Research Center, Temple University School of Medicine, Philadelphia, PA, USA
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Johansson MW, Mosher DF. Activation of beta1 integrins on blood eosinophils by P-selectin. Am J Respir Cell Mol Biol 2011; 45:889-97. [PMID: 21441381 DOI: 10.1165/rcmb.2010-0402oc] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Activation of β(1) integrins of blood eosinophils, assessed by mAb N29, correlates inversely with FEV(1) in two paradigms for studying control of human asthma. We asked whether P-selectin causes eosinophil β(1) integrin activation and results in increased adhesivity. By dual-label flow cytometry, eosinophils with high levels of surface-associated P-selectin had higher reactivity with the activation-sensitive anti-β(1) mAbs N29, 8E3, and 9EG7 than eosinophils with no or with a low-level of surface-associated P-selectin. Among patients with nonsevere asthma, surface P-selectin correlated with N29, 8E3, and 9EG7 signals. By immunofluorescence microscopy, surface-associated P-selectin was present in patches on eosinophils, some of which stained for the platelet marker thrombospondin-1. Activated β(1) and P-selectin partially colocalized on eosinophils. Soluble P-selectin added to whole blood enhanced activation of eosinophil β(1), but not β(2), integrins. In contrast, IL-5 activated eosinophil β(2), but not β(1), integrins. Eosinophils that did not attach to vascular cell adhesion molecule-1 (VCAM-1) in a static adhesion assay had a lower N29 signal than the original population. Soluble P-selectin added to whole blood enhanced eosinophil adhesion to VCAM-1. These findings are compatible with a scenario whereby P-selectin, on eosinophil-associated activated platelets or acquired from plasma or from prior interactions with endothelial cells or platelets, activates eosinophil α(4)β(1) integrin and stimulates eosinophils to adhere to VCAM-1 and move to the airway in asthma.
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Affiliation(s)
- Mats W Johansson
- Department of Biomolecular Chemistry, University of Wisconsin, 4285A, Medical Sciences Center, 1300 University Avenue, Madison, WI 53706, USA.
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