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Ali A, Mounika N, Nath B, Johny E, Kuladhipati I, Das R, Hussain M, Bandyopadhyay A, Adela R. Platelet-derived sTLT-1 is associated with platelet-mediated inflammation in coronary artery disease patients. Cytokine 2024; 178:156581. [PMID: 38508060 DOI: 10.1016/j.cyto.2024.156581] [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: 12/07/2023] [Revised: 03/09/2024] [Accepted: 03/13/2024] [Indexed: 03/22/2024]
Abstract
The development of coronary artery disease (CAD) depends heavily on platelet activation, and inflammation plays a major role in all stages of atherosclerosis. Platelet-specific soluble triggering receptor expressed on myeloid cells like transcript 1 (sTLT-1) facilitate clot formation and have been linked to chronic inflammation. In this study, we explored the role of platelet-derived sTLT-1 in platelet-mediated inflammation in CAD patients. Plasma levels of sTLT-1 were measured using enzyme-linked immunosorbent assay in CAD patients (n = 163) and healthy controls (n = 99). Correlation analysis was performed to determine the circulatory sTLT-1 levels with platelet activation markers, immune cells, and inflammatory cytokines/chemokines. Increased plasma sTLT-1 levels were observed in CAD patients compared with those in healthy controls (p < 0.0001). A positive correlation was observed between sTLT-1 and platelet activation markers (P-selectin, PAC-1), CD14++ CD16- cells (classical monocytes), Natural killer T (NKT) cells, and platelet-immune cell aggregates with monocytes, neutrophils, dendritic cells, CD11c+ cells, and NKT cells. In contrast, a significant negative correlation was observed with CD8 cells. Furthermore, a significant positive correlation was observed between sTLT-1 and inflammatory markers (TNF-α, IL-1β, IL-2, IL-6, IL-12p70, IL-18, CXCL-12, and CCL-11). Logistic regression analysis identified sTLT-1 and triglycerides as predictors of CAD. Receiver operating characteristic curve (ROC) analysis showed that sTLT-1 had a higher sensitivity and specificity for predicting CAD. Our findings suggest that platelet activation induces the release of sTLT-1 into the circulation in CAD patients, which aggregates with immune cells and enhances inflammatory responses.
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Affiliation(s)
- Amir Ali
- Department of Pharmacy Practice, National Institute of Pharmaceutical Education and Research, Guwahati, Assam, India
| | - Nadella Mounika
- Department of Pharmacy Practice, National Institute of Pharmaceutical Education and Research, Guwahati, Assam, India
| | - Bishamber Nath
- Department of Pharmacy Practice, National Institute of Pharmaceutical Education and Research, Guwahati, Assam, India
| | - Ebin Johny
- Department of Pharmacy Practice, National Institute of Pharmaceutical Education and Research, Guwahati, Assam, India; Pittsburgh Heart, Lung, Blood and Vascular Medicine Institute, University of Pittsburgh, PA, USA
| | | | - Rajesh Das
- Nemcare Hospital G.S. Road, Bhangagarh, Guwahati, Assam, India
| | - Monowar Hussain
- Nemcare Hospital G.S. Road, Bhangagarh, Guwahati, Assam, India
| | | | - Ramu Adela
- Department of Pharmacy Practice, National Institute of Pharmaceutical Education and Research, Guwahati, Assam, India.
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Liu MM, Ding CY, Li ZH, Yi RH, Ma LP, Ou XM, Liu HX, Gao L, Liu QJ. Multiple exposures to low-dose ionizing radiation induced the initiation and progression of pro-atherosclerotic phenotypes in mice and vascular endothelial cell damage. Sci Prog 2024; 107:368504241228668. [PMID: 38385346 PMCID: PMC10893836 DOI: 10.1177/00368504241228668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
OBJECTIVE This study aimed to investigate the effects of low-dose radiation on the abdominal aorta of mice and vascular endothelial cells. METHODS Wild-type and tumor-bearing mice were exposed to 15 sessions of low-dose irradiation, resulting in cumulative radiation doses of 187.5, 375, and 750 mGy. The effect on the cardiovascular system was assessed. Immunohistochemistry analyzed protein expressions of PAPP-A, CD62, P65, and COX-2 in the abdominal aorta. Microarray technology, Gene Ontology analysis, and pathway enrichment analysis evaluated gene expression changes in endothelial cells exposed to 375 mGy X-ray. Cell viability was assessed using the Cell Counting Kit 8 assay. Immunofluorescence staining measured γ-H2AX levels, and real-time polymerase chain reaction quantified mRNA levels of interleukin-6 (IL-6), ICAM-1, and Cx43. RESULTS Hematoxylin and eosin staining revealed thickening of the inner membranes and irregular arrangement of smooth muscle cells in the media membrane at 375 and 750 mGy. Inflammation was observed in the inner membranes at 750 mGy, with a clear inflammatory response in the hearts of tumor-bearing mice. Immunohistochemistry indicated increased levels of PAPP-A, P65, and COX-2 post-irradiation. Microarray analysis showed 425 up-regulated and 235 down-regulated genes, associated with processes like endothelial cell-cell adhesion, IL-6, and NF-κB signaling. Cell Counting Kit 8 assay results indicated inhibited viability at 750 mGy in EA.hy926 cells. Immunofluorescence staining demonstrated a dose-dependent increase in γ-H2AX foci. Reverse transcription quantitative PCR results showed increased expression of IL6, ICAM-1, and Cx43 in EA.hy926 cells post 750 mGy X-ray exposure. CONCLUSION Repeated low-dose ionizing radiation exposures triggered the development of pro-atherosclerotic phenotypes in mice and damage to vascular endothelial cells.
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Affiliation(s)
- Meng-Meng Liu
- China CDC Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing, P.R. China
| | - Chun-Yan Ding
- China CDC Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing, P.R. China
- Department of Oncology, Affiliated Qingdao Central Hospital of Qingdao University, Qingdao Cancer Hospital, Qingdao, P.R. China
| | - Zhi-Hui Li
- Department of Thoracic and Cardiovascular Surgery, Beijing Yanhua Hospital, Beijing, P.R. China
| | - Ru-Han Yi
- China CDC Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing, P.R. China
| | - Li-Ping Ma
- China CDC Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing, P.R. China
| | - Xiang-Ming Ou
- China CDC Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing, P.R. China
| | - Hai-Xiang Liu
- China CDC Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing, P.R. China
| | - Ling Gao
- China CDC Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing, P.R. China
| | - Qing-Jie Liu
- China CDC Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing, P.R. China
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Fan L, Liu Y, Wang Z, Mei X. Prognostic utility of sTREM-1 in predicting early neurological deterioration in patients with acute ischemic stroke treated without reperfusion therapy. J Stroke Cerebrovasc Dis 2023; 32:107381. [PMID: 37776727 DOI: 10.1016/j.jstrokecerebrovasdis.2023.107381] [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: 04/23/2023] [Revised: 09/15/2023] [Accepted: 09/18/2023] [Indexed: 10/02/2023] Open
Abstract
OBJECTIVE Serum triggering receptor expressed on myeloid cells type 1 (sTREM-1) is a new type of immunoglobulin superfamily receptor related to inflammation that aggravates brain injury. This study aimed to assess the clinical value of sTREM-1 in predicting early neurological deterioration in patients with acute ischemic stroke (AIS) treated without reperfusion therapy. METHODS This prospective cohort study enrolled 315 patients with acute ischemic stroke admitted to the Affiliated Taizhou People's Hospital of Nanjing Medical University between October 2020 and October 2022. The study excluded patients treated with reperfusion therapy. sTREM-1 levels were evaluated within 24 h of the acute ischemic stroke. Early neurological deterioration (END) was defined as an increase in the National Institutes of Health Stroke Scale (NIHSS) score ≥ 4 points within three days after admission. Multivariable analyses were used to investigate the relationship between sTREM-1 levels and END. RESULTS A total of 81 (25.7 %) patients had early neurological deterioration. Patients in the END group had a higher NIHSS score at admission (P =0.007), CRP levels (P =0.011), white blood cell count (P =0.002), fasting blood glucose levels (P =0.028), and sTREM-1 levels (P <0.001). After adjusting for confounders, higher sTREM-1 levels were significantly associated with an increased risk of early neurological deterioration (OR, 1.98; 95 % CI, 1.17-3.38, P=0.012). Moreover, sTREM-1 levels efficiently differentiated END (area under the curve: 0.779; 95 % CI: 0.731-0.822). Furthermore, the results showed significant differences between the high sTREM-1 group and the low sTREM-1 group in NIHSS scores (P=0.019), C-reactive protein (P=0.018), white blood cell count (P=0.013), and the incidence of early neurological deterioration (P<0.001). According to the multivariate logistic regression model, we discovered that the high sTREM-1 group was a significant independent predictor of early neurological deterioration incidence (OR, 4.19; 95 % CI, 1.46-9.84; P= 0.003). CONCLUSION sTREM-1 could be a potential biomarker for predicting early neurological deterioration in AIS patients not treated with reperfusion therapy.
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Affiliation(s)
- Lin Fan
- Department of Neurology, The Affiliated Taizhou People's Hospital of Nanjing Medical University, Taizhou 225300, China; Taizhou School of Clinical Medicine, The Affiliated Taizhou People's Hospital of Nanjing Medical University, Taizhou 225300, China
| | - Ying Liu
- Department of Neurology, The Affiliated Taizhou People's Hospital of Nanjing Medical University, Taizhou 225300, China
| | - Zhengyang Wang
- Department of Neurology, The Affiliated Taizhou People's Hospital of Nanjing Medical University, Taizhou 225300, China
| | - Xiaoliang Mei
- Taizhou School of Clinical Medicine, The Affiliated Taizhou People's Hospital of Nanjing Medical University, Taizhou 225300, China.
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Lee SH, Cho S, Lee JY, Hong JY, Kim S, Jeong MH, Kim WH. Identification of Potential Drug Targets for Antiplatelet Therapy Specifically Targeting Platelets of Old Individuals through Proteomic Analysis. Biomedicines 2023; 11:2944. [PMID: 38001945 PMCID: PMC10669211 DOI: 10.3390/biomedicines11112944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Revised: 10/26/2023] [Accepted: 10/27/2023] [Indexed: 11/26/2023] Open
Abstract
Aging is a growing problem worldwide, and the prevalence and mortality of arterial and venous thromboembolism (VTE) are higher in the elderly than in the young population. To address this issue, various anticoagulants have been used. However, no evidence can confirm that antithrombotic agents are suitable for the elderly. Therefore, this study aims to investigate the platelet proteome of aged mice and identify antithrombotic drug targets specific to the elderly. Based on the proteome analysis of platelets from aged mice, 308 increased or decreased proteins were identified. Among these proteins, three targets were selected as potential antithrombotic drug targets. These targets are membrane proteins or related to platelet function and include beta-2-glycoprotein 1 (β2GP1, ApolipoproteinH (ApoH)), alpha-1-acid glycoprotein2 (AGP2, Orosomucoid-2 (Orm2)), and Ras-related protein (Rab11a).
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Affiliation(s)
- Seung Hee Lee
- Division of Cardiovascular Disease Research, Department of Chronic Disease Convergence Research, Korea National Institute of Health, Cheongju-si 28159, Republic of Korea; (S.C.)
| | | | | | | | | | | | - Won-Ho Kim
- Division of Cardiovascular Disease Research, Department of Chronic Disease Convergence Research, Korea National Institute of Health, Cheongju-si 28159, Republic of Korea; (S.C.)
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5
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Kaur K, Kennedy K, Liles D. Crizanlizumab in sickle cell disease. Pain Manag 2023. [PMID: 37850353 DOI: 10.2217/pmt-2023-0031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2023] Open
Abstract
Vaso-occlusion in sickle cell disease (SCD) leads to a myriad of manifestations driving morbidity and mortality in patients with SCD. Increased leucocyte adhesion and P-selectin expression on platelets and endothelial cells is an inciting event that leads to obstruction of microcirculation by adhesion with rigid sickled red blood cells. Crizanlizumab is a first-in-class monoclonal antibody that inhibits P-selectin and has been shown to decrease the frequency of vaso-occlusive pain crises in patients with SCD in clinical trials. The role of crizanlizumab in other manifestations of SCD still needs further investigation.
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Affiliation(s)
- Kiranveer Kaur
- Division of Hematology/Oncology, East Carolina University, Greenville, NC 27834, USA
| | - Katie Kennedy
- Division of Hematology/Oncology, East Carolina University, Greenville, NC 27834, USA
| | - Darla Liles
- Division of Hematology/Oncology, East Carolina University, Greenville, NC 27834, USA
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6
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Sommer P, Schreinlechner M, Noflatscher M, Lener D, Mair F, Theurl M, Kirchmair R, Marschang P. Increasing Soluble P-Selectin Levels Predict Higher Peripheral Atherosclerotic Plaque Progression. J Clin Med 2023; 12:6430. [PMID: 37892568 PMCID: PMC10607706 DOI: 10.3390/jcm12206430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 10/06/2023] [Accepted: 10/07/2023] [Indexed: 10/29/2023] Open
Abstract
BACKGROUND AND AIMS The adhesion molecule P-selectin is expressed by endothelial cells and platelets. It is involved in platelet activation and leukocyte adhesion, both important processes in the pathogenesis of atherosclerosis. Our study was designed to assess the predictive value of soluble P-selectin (sP-selectin) on the progression of peripheral atherosclerosis. METHODS This is an observational, single-center, cohort study that included 443 patients with established cardiovascular disease (CVD) or at least one cardiovascular risk factor. Over a period of 4 years, each patient underwent three-dimensional (3D) ultrasound to assess the plaque volume of the carotid and femoral arteries once per year. In addition, plasma sP-selectin levels were measured at each visit. The association between changes in sP-selectin and peripheral atherosclerotic plaque progression was assessed using growth curve models. RESULTS 338 patients were available for statistical analysis. Each standard deviation increase in sP-selectin was significantly (p < 0.001) associated with a 46.09 mm3 higher plaque volume. In ROC-analysis, changes in sP-selectin over time showed an optimal cut-off value around Δ 0.0 µg/mL sP-selectin and significantly improved the predictive value of the ESC-SCORE (AUC for the combination of both parameters was 0.75 (95% CI 0.68-0.81, p < 0.001). Patients with increasing sP-selectin showed a significantly higher plaque progression compared to patients with decreasing or stable sP-selectin levels (202 mm3 vs. 110 mm3, p < 0.001). CONCLUSIONS Increasing sP-selectin levels can predict higher atherosclerotic plaque progression as measured by 3D ultrasound. We suggest serial measurements of sP-selectin as an easily measurable biomarker for peripheral atherosclerotic plaque progression.
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Affiliation(s)
- Philip Sommer
- Department of Internal Medicine III (Cardiology, Angiology), Medical University of Innsbruck, Anichstr. 35, A-6020 Innsbruck, Austria; (P.S.)
| | - Michael Schreinlechner
- Department of Internal Medicine III (Cardiology, Angiology), Medical University of Innsbruck, Anichstr. 35, A-6020 Innsbruck, Austria; (P.S.)
| | - Maria Noflatscher
- Department of Internal Medicine III (Cardiology, Angiology), Medical University of Innsbruck, Anichstr. 35, A-6020 Innsbruck, Austria; (P.S.)
| | - Daniela Lener
- Department of Internal Medicine III (Cardiology, Angiology), Medical University of Innsbruck, Anichstr. 35, A-6020 Innsbruck, Austria; (P.S.)
| | - Fabian Mair
- Department of Internal Medicine III (Cardiology, Angiology), Medical University of Innsbruck, Anichstr. 35, A-6020 Innsbruck, Austria; (P.S.)
| | - Markus Theurl
- Department of Internal Medicine III (Cardiology, Angiology), Medical University of Innsbruck, Anichstr. 35, A-6020 Innsbruck, Austria; (P.S.)
| | - Rudolf Kirchmair
- Department of Internal Medicine III (Cardiology, Angiology), Medical University of Innsbruck, Anichstr. 35, A-6020 Innsbruck, Austria; (P.S.)
| | - Peter Marschang
- Department of Internal Medicine III (Cardiology, Angiology), Medical University of Innsbruck, Anichstr. 35, A-6020 Innsbruck, Austria; (P.S.)
- Department of Internal Medicine, Central Hospital of Bolzano (SABES-ASDAA), Via Lorenz Boehler 5, I-39100 Bolzano, Italy
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7
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Bayrón-Marrero Z, Branfield S, Menéndez-Pérez J, Nieves-López B, Ospina L, Cantres-Rosario Y, Melendez LM, Hunter R, Gibson A, Maldonado-Martínez G, Washington AV. The Characterization and Evaluation of the Soluble Triggering Receptor Expressed on Myeloid Cells-like Transcript-1 in Stable Coronary Artery Disease. Int J Mol Sci 2023; 24:13632. [PMID: 37686440 PMCID: PMC10487797 DOI: 10.3390/ijms241713632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Revised: 08/27/2023] [Accepted: 08/29/2023] [Indexed: 09/10/2023] Open
Abstract
Platelets play crucial roles in the development and progression of coronary artery disease (CAD). The triggering receptor expressed in myeloid cells-like transcript-1 (TLT-1) is stored in platelet α granules, and activated platelets release a soluble fragment (sTLT-1). We set out to better characterize the constituent amino acids of sTLT-1 and to evaluate sTLT-1 for use as a biomarker in patients with stable CAD. We evaluated sTLT-1 release using immunoprecipitation and mass spectrometry and employed statistical methods to retrospectively correlate sTLT-1 concentrations, utilizing ELISA in plasma samples from 1510 patients with documented stable CAD. We identified TLT-1 residues to 133 in platelet releasates. ADAM17 cuts TLT-1, suggesting that S136 is the C-terminal amino acid in sTLT-1. Our results revealed that for CAD patients, sTLT-1 levels did not differ significantly according to primary outcomes of death or major cardiac event; however, patients with left ventricular (LV) dysfunction had significantly lower plasma sTLT-1 levels as compared to those with normal LV function (981.62 ± 1141 pg/mL vs. 1247.48 ± 1589 pg/mL; p = 0.003). When patients were stratified based on sTLT-1 peak frequency distribution (544 pg/mL), a significant association with congestive heart failure was identified (OR = 2.94; 1.040-8.282; p = 0.042), which could be explained by LV dysfunction.
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Affiliation(s)
- Zaida Bayrón-Marrero
- Department of Biology, University of Puerto Rico–Rio Piedras, San Juan, PR 00936, USA; (Z.B.-M.); (S.B.); (J.M.-P.); (B.N.-L.); (L.O.)
| | - Siobhan Branfield
- Department of Biology, University of Puerto Rico–Rio Piedras, San Juan, PR 00936, USA; (Z.B.-M.); (S.B.); (J.M.-P.); (B.N.-L.); (L.O.)
- Department of Biology, Oakland University, Rochester Hills, MI 48309, USA
| | - Javier Menéndez-Pérez
- Department of Biology, University of Puerto Rico–Rio Piedras, San Juan, PR 00936, USA; (Z.B.-M.); (S.B.); (J.M.-P.); (B.N.-L.); (L.O.)
| | - Benjamín Nieves-López
- Department of Biology, University of Puerto Rico–Rio Piedras, San Juan, PR 00936, USA; (Z.B.-M.); (S.B.); (J.M.-P.); (B.N.-L.); (L.O.)
| | - Laura Ospina
- Department of Biology, University of Puerto Rico–Rio Piedras, San Juan, PR 00936, USA; (Z.B.-M.); (S.B.); (J.M.-P.); (B.N.-L.); (L.O.)
| | - Yadira Cantres-Rosario
- Translational Proteomics Center, Comprehensive Cancer Center, University of Puerto Rico, San Juan, PR 00936, USA; (Y.C.-R.); (L.M.M.)
| | - Loyda M. Melendez
- Translational Proteomics Center, Comprehensive Cancer Center, University of Puerto Rico, San Juan, PR 00936, USA; (Y.C.-R.); (L.M.M.)
- Department of Microbiology and Medical Zoology, University of Puerto Rico Medical Sciences Campus, San Juan, PR 00936, USA
| | - Robert Hunter
- Retroviral Research Center, Universidad Central del Caribe, Bayamón, PR 00960, USA;
| | - Angelia Gibson
- Division of Natural Sciences, Maryville College, Maryville, TN 37804, USA;
| | | | - A. Valance Washington
- Department of Biology, University of Puerto Rico–Rio Piedras, San Juan, PR 00936, USA; (Z.B.-M.); (S.B.); (J.M.-P.); (B.N.-L.); (L.O.)
- Department of Biology, Oakland University, Rochester Hills, MI 48309, USA
- William Beaumont School of Medicine, Oakland University, Rochester Hills, MI 48309, USA
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8
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Dev P, Ekhlak M, Dash D, Pathak A. Platelet function suggests cardioembolic aetiology in cryptogenic stroke. Sci Rep 2023; 13:7615. [PMID: 37165007 PMCID: PMC10172292 DOI: 10.1038/s41598-023-32143-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Accepted: 03/23/2023] [Indexed: 05/12/2023] Open
Abstract
Platelet-monocyte (PMA) and platelet-neutrophil aggregations (PNA) play critical roles in the evolution of acute ischemic stroke (AIS). The present study investigates the mechanistic basis of platelet responsiveness in cryptogenic stroke compared with cardioembolic stroke. Platelet from 16 subjects, each from cryptogenic and cardioembolic stroke groups and 18 age-matched healthy controls were subjected to different investigations. Compared to healthy controls, platelet-monocyte and platelet-neutrophil interactions were significantly elevated in cryptogenic (2.7 and 2.1 times) and cardioembolic stroke (3.9 and 2.4 times). P-selectin expression on platelet surface was 1.89 and 2.59 times higher in cryptogenic and cardioembolic strokes, respectively, compared to healthy control. Cell population with [Ca2+i] in either stroke group was significantly outnumbered (by 83% and 72%, respectively, in cryptogenic and cardioembolic stroke) in comparison to healthy controls. Noteworthy, TEG experiment revealed that the cryptogenic stroke exhibited significant decline in Reaction Time (R) and amplitude of 20 mm (K) (by 32% and 33%, respectively) while thrombin burst (α-angle) was augmented by 12%, which reflected substantial boost in thrombus formation in cryptogenic stroke. Although TEG analysis reveals a state of hypercoagulability in patients with cryptogenic stroke. However, platelets from both stroke subtypes switch to a 'hyperactive' phenotype.
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Affiliation(s)
- Priya Dev
- Department of Neurology, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, 221005, India
| | - Mohammad Ekhlak
- Department of Biochemistry, Center for Advanced Research on Platelet Signaling and Thrombosis Biology, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Debabrata Dash
- Department of Biochemistry, Center for Advanced Research on Platelet Signaling and Thrombosis Biology, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India.
| | - Abhishek Pathak
- Department of Neurology, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, 221005, India.
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9
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Human Blood Platelets Adsorption on Polymeric Materials for Liquid Biopsy. SENSORS 2022; 22:s22134788. [PMID: 35808284 PMCID: PMC9269204 DOI: 10.3390/s22134788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 06/20/2022] [Accepted: 06/23/2022] [Indexed: 12/04/2022]
Abstract
Platelets are emerging as a promising source of blood biomarkers for several pathologies, including cancer. New automated techniques for easier manipulation of platelets in the context of lab-on-a-chips could be of great support for liquid biopsy. Here, several polymeric materials were investigated for their behavior in terms of adhesion and activation of human platelets. Polymeric materials were selected among the most used in microfabrication (PDMS, PMMA and COC) and commercial and home-made resins for 3D printing technology with the aim to identify the most suitable for the realization of microdevices for human platelets isolation and analysis. To visualize adherent platelets and their activation state scanning, electron microscopy was used, while confocal microscopy was used for evaluating platelets’ features. In addition, atomic force microscopy was employed to further study platelets adherent to the polymeric materials. Polymers were divided in two main groups: the most prone to platelet adhesion and materials that cause few or no platelets to adhere. Therefore, different polymeric materials could be identified as suitable for the realization of microdevices aimed at capturing human platelets, while other materials could be employed for the fabrication of microdevices or parts of microdevices for the processing of platelets, without loss on surfaces during the process.
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10
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He L, Zhang Y, Hou C, Zhu Z, He Q, Huang Q, Ji S. Triggering receptor expressed on myeloid cells (TREM) like transcript-1 (TLT-1) reveals platelet activation in preeclampsia. Platelets 2022; 33:1132-1138. [PMID: 35348422 DOI: 10.1080/09537104.2022.2046723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Triggering receptor expressed on myeloid cells (TREM) like transcript-1 (TLT-1) is a membrane protein receptor found in α-granules of megakaryocytes and platelets. Upon platelet activation TLT-1 is rapidly relocated to the surface of platelets. In plasma, a soluble form of TLT-1 (sTLT-1) is present. Plasma levels of sTLT-1 are significantly elevated in thrombotic diseases. In the present study, we investigated to whether TLT-1 reflects platelet activation in pregnant women with preeclampsia. We studied 30 preeclamptic patients who were matched with 30 normotensive pregnant women and 30 non-pregnant controls. Basal TLT-1, P-selectin, and CD63 expressions on platelets were analyzed with the use of flow-cytometry (FCM). Platelet reactivity was induced by thrombin receptor activation peptide and determined by FCM. Plasma concentrations of sTLT-1 and soluble P-selectin (sP-selectin) were measured by an enzyme-linked immunosorbent assay. Results show that basal platelet expression of TLT-1, P-selectin and CD63 were increased in women with preeclampsia (PE) compared with normotensive pregnant women (NP). Platelets from PE women and NP women were more responsive compared to from nonpregnant women controls (NC), and which was demonstrated by increased expression of TLT-1, P-selectin, and CD63 upon stimulation in vitro. Plasma concentration of sTLT-1 was greater in PE women compared to NP women and NC women. Plasma sP-selectin level was higher in pregnant women than in nonpregnant women, but there were no significant differences between PE and NP women. In summary, our results revealed that platelet activation is prominent in preeclampsia, TLT-1 reflects platelet activation and may be a useful indicator for preeclampsia.
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Affiliation(s)
- Linyan He
- Jiangsu Institute of Hematology, National Clinical Research Center for Hematologic Diseases, Nhc Key Laboratory of Thrombosis and Hemostasis, The First Affiliated Hospital of Soochow University, Suzhou, China.,Collaborative Innovation Center of Hematology, Soochow University, Suzhou, China
| | - Yawen Zhang
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Chunqi Hou
- Hemodialysis Center, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Ziling Zhu
- Jiangsu Institute of Hematology, National Clinical Research Center for Hematologic Diseases, Nhc Key Laboratory of Thrombosis and Hemostasis, The First Affiliated Hospital of Soochow University, Suzhou, China.,Collaborative Innovation Center of Hematology, Soochow University, Suzhou, China
| | - Qi He
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Qin Huang
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Shundong Ji
- Jiangsu Institute of Hematology, National Clinical Research Center for Hematologic Diseases, Nhc Key Laboratory of Thrombosis and Hemostasis, The First Affiliated Hospital of Soochow University, Suzhou, China.,Collaborative Innovation Center of Hematology, Soochow University, Suzhou, China
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Smith CW. Release of α-granule contents during platelet activation. Platelets 2021; 33:491-502. [PMID: 34569425 DOI: 10.1080/09537104.2021.1913576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Upon activation, platelets release a plethora of factors which help to mediate their dynamic functions in hemostasis, inflammation, wound healing, tumor metastasis and angiogenesis. The majority of these bioactive molecules are released from α-granules, which are unique to platelets, and contain an incredibly diverse repertoire of cargo including; integral membrane proteins, pro-coagulant molecules, chemokines, mitogenic, growth and angiogenic factors, adhesion proteins, and microbicidal proteins. Clinically, activation of circulating platelets has increasingly been associated with various disease states. Biomarkers indicating the level of platelet activation in patients can therefore be useful tools to evaluate risk factors to predict future complications and determine treatment strategies or evaluate antiplatelet therapy. The irreversible nature of α-granule secretion makes it ideally suited as a marker of platelet activation. This review outlines the release and contents of platelet α-granules, as well as the membrane bound, and soluble α-granule cargo proteins that can be used as biomarkers of platelet activation.
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Affiliation(s)
- Christopher W Smith
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, B15 2TT, Birmingham, UK
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The Role of P-Selectin in COVID-19 Coagulopathy: An Updated Review. Int J Mol Sci 2021; 22:ijms22157942. [PMID: 34360707 PMCID: PMC8348106 DOI: 10.3390/ijms22157942] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 07/20/2021] [Accepted: 07/21/2021] [Indexed: 01/14/2023] Open
Abstract
In severe COVID-19, which is characterized by blood clots and neutrophil-platelet aggregates in the circulating blood and different tissues, an increased incidence of cardiovascular complications and venous thrombotic events has been reported. The inflammatory storm that characterizes severe infections may act as a driver capable of profoundly disrupting the complex interplay between platelets, endothelium, and leukocytes, thus contributing to the definition of COVID-19-associated coagulopathy. In this frame, P-selectin represents a key molecule expressed on endothelial cells and on activated platelets, and contributes to endothelial activation, leucocyte recruitment, rolling, and tissue migration. Briefly, we describe the current state of knowledge about P-selectin involvement in COVID-19 pathogenesis, its possible use as a severity marker and as a target for host-directed therapeutic intervention.
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