101
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Zhu S, Yuan Q, Yin T, You J, Gu Z, Xiong S, Hu Y. Self-assembly of collagen-based biomaterials: preparation, characterizations and biomedical applications. J Mater Chem B 2018; 6:2650-2676. [DOI: 10.1039/c7tb02999c] [Citation(s) in RCA: 103] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
By combining regulatory parameters with characterization methods, researchers can selectively fabricate collagenous biomaterials with various functional responses for biomedical applications.
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Affiliation(s)
- Shichen Zhu
- College of Food Science and Technology and MOE Key Laboratory of Environment Correlative Dietology
- Huazhong Agricultural University
- Wuhan 430070
- P. R. China
- Collaborative Innovation Center for Efficient and Health Production of Fisheries in Hunan Province
| | - Qijuan Yuan
- Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instrument
- School of Engineering
- Sun Yat-sen University
- Guangzhou 510006
- P. R. China
| | - Tao Yin
- College of Food Science and Technology and MOE Key Laboratory of Environment Correlative Dietology
- Huazhong Agricultural University
- Wuhan 430070
- P. R. China
| | - Juan You
- College of Food Science and Technology and MOE Key Laboratory of Environment Correlative Dietology
- Huazhong Agricultural University
- Wuhan 430070
- P. R. China
| | - Zhipeng Gu
- Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instrument
- School of Engineering
- Sun Yat-sen University
- Guangzhou 510006
- P. R. China
| | - Shanbai Xiong
- College of Food Science and Technology and MOE Key Laboratory of Environment Correlative Dietology
- Huazhong Agricultural University
- Wuhan 430070
- P. R. China
- Collaborative Innovation Center for Efficient and Health Production of Fisheries in Hunan Province
| | - Yang Hu
- College of Food Science and Technology and MOE Key Laboratory of Environment Correlative Dietology
- Huazhong Agricultural University
- Wuhan 430070
- P. R. China
- Collaborative Innovation Center for Efficient and Health Production of Fisheries in Hunan Province
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102
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Hickman DA, Pawlowski CL, Sekhon UDS, Marks J, Gupta AS. Biomaterials and Advanced Technologies for Hemostatic Management of Bleeding. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:10.1002/adma.201700859. [PMID: 29164804 PMCID: PMC5831165 DOI: 10.1002/adma.201700859] [Citation(s) in RCA: 265] [Impact Index Per Article: 44.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2017] [Revised: 06/18/2017] [Indexed: 05/03/2023]
Abstract
Bleeding complications arising from trauma, surgery, and as congenital, disease-associated, or drug-induced blood disorders can cause significant morbidities and mortalities in civilian and military populations. Therefore, stoppage of bleeding (hemostasis) is of paramount clinical significance in prophylactic, surgical, and emergency scenarios. For externally accessible injuries, a variety of natural and synthetic biomaterials have undergone robust research, leading to hemostatic technologies including glues, bandages, tamponades, tourniquets, dressings, and procoagulant powders. In contrast, treatment of internal noncompressible hemorrhage still heavily depends on transfusion of whole blood or blood's hemostatic components (platelets, fibrinogen, and coagulation factors). Transfusion of platelets poses significant challenges of limited availability, high cost, contamination risks, short shelf-life, low portability, performance variability, and immunological side effects, while use of fibrinogen or coagulation factors provides only partial mechanisms for hemostasis. With such considerations, significant interdisciplinary research endeavors have been focused on developing materials and technologies that can be manufactured conveniently, sterilized to minimize contamination and enhance shelf-life, and administered intravenously to mimic, leverage, and amplify physiological hemostatic mechanisms. Here, a comprehensive review regarding the various topical, intracavitary, and intravenous hemostatic technologies in terms of materials, mechanisms, and state-of-art is provided, and challenges and opportunities to help advancement of the field are discussed.
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Affiliation(s)
- DaShawn A Hickman
- Case Western Reserve University School of Medicine, Department of Pathology, Cleveland, Ohio 44106, USA
| | - Christa L Pawlowski
- Case Western Reserve University, Department of Biomedical Engineering, Cleveland, Ohio 44106, USA
| | - Ujjal D S Sekhon
- Case Western Reserve University, Department of Biomedical Engineering, Cleveland, Ohio 44106, USA
| | - Joyann Marks
- Case Western Reserve University, Department of Biomedical Engineering, Cleveland, Ohio 44106, USA
| | - Anirban Sen Gupta
- Case Western Reserve University, Department of Biomedical Engineering, Cleveland, Ohio 44106, USA
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103
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Medical Applications of Collagen and Hyaluronan in Regenerative Medicine. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1077:285-306. [PMID: 30357694 DOI: 10.1007/978-981-13-0947-2_15] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
In order to develop and commercialize for the regenerative medicinal products, smart biomaterials with biocompatibility must be needed. In this chapter, we introduce collagen and hyaluronic acid (HA) as extracellular matrix as well as deal with the molecular mechanism as microenvironment, mechanistic effects, and gene expression. Application of collagen and HA have been reviewed in the area of orthopedics, orthopedics, ophthalmology, dermatology and plastic surgery. Finally, the ongoing and commercial products of collagen and HA for regenerative medicine have been introduced.
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104
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Pan M, Tang Z, Tu J, Wang Z, Chen Q, Xiao R, Liu H. Porous chitosan microspheres containing zinc ion for enhanced thrombosis and hemostasis. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 85:27-36. [PMID: 29407154 DOI: 10.1016/j.msec.2017.12.015] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Revised: 10/19/2017] [Accepted: 12/07/2017] [Indexed: 12/11/2022]
Abstract
Quick hemostats for non-lethal massive traumatic bleeding in battlefield and civilian accidents are important for reducing mortality and medical costs. Chitosan (CS) has been widely used as a clinic hemostat. To enhance its hemostatic efficiency, Zn2+ in the form of zinc alginate (ZnAlg) was introduced to CS to make porous CS@ZnAlg microspheres with ZnAlg component on the surface. Such microspheres were prepared by successive steps of micro-emulsion, polyelectrolyte adhesion, and thermally induced phase separation. Their structure and hemostatic performance were analyzed by SEM, FT-IR, XPS and a series of in vitro hemostatic experiments including thromboelastography analysis. The composite microspheres had an outer and internal interconnected porous structure. Their size, surface area, and water absorption ratio were ca. 70μm, 48m2/g, and 1850%, respectively. Compared to the neat chitosan microspheres, the CS@ZnAlg microspheres showed shorter onset of clot formation, much faster in vitro and in vivo whole blood clotting, bigger clot, less blood loss, and shorter hemostatic time in the rat liver laceration and tail amputation models. The synergetic hemostatic effects from (1) the electrostatic attraction between chitosan component and red blood cells, (2) the activation of coagulation factor XII by Zn2+ of zinc alginate component, and (3) physical blocking by microsphere matrix, contributed to the enhanced hemostatic performance of CS@ZnAlg microspheres.
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Affiliation(s)
- Meng Pan
- Fujian Provincial Key Laboratory of Polymer Materials, College of Materials Science and Engineering, Fujian Normal University, Fujian 350007, China
| | - Zonghao Tang
- College of Life Science, Fujian Normal University, Fujian 350007, China
| | - Jianbing Tu
- Fujian Provincial Key Laboratory of Polymer Materials, College of Materials Science and Engineering, Fujian Normal University, Fujian 350007, China
| | - Zhengchao Wang
- College of Life Science, Fujian Normal University, Fujian 350007, China.
| | - Qinhui Chen
- Fujian Provincial Key Laboratory of Polymer Materials, College of Materials Science and Engineering, Fujian Normal University, Fujian 350007, China
| | - Rongdong Xiao
- Department of Cardiovascular Surgery, Provincial Clinical College of Fujian Medical University, Fujian 350001, China.
| | - Haiqing Liu
- Fujian Provincial Key Laboratory of Polymer Materials, College of Materials Science and Engineering, Fujian Normal University, Fujian 350007, China.
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105
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Banerjee J, Azevedo HS. Crafting of functional biomaterials by directed molecular self-assembly of triple helical peptide building blocks. Interface Focus 2017; 7:20160138. [PMID: 29147553 PMCID: PMC5665793 DOI: 10.1098/rsfs.2016.0138] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Collagen is the most abundant extracellular matrix protein in the body and has widespread use in biomedical research, as well as in clinics. In addition to difficulties in the production of recombinant collagen due to its high non-natural imino acid content, animal-derived collagen imposes several major drawbacks-variability in composition, immunogenicity, pathogenicity and difficulty in sequence modification-that may limit its use in the practical scenario. However, in recent years, scientists have shifted their attention towards developing synthetic collagen-like materials from simple collagen model triple helical peptides to eliminate the potential drawbacks. For this purpose, it is highly desirable to develop programmable self-assembling strategies that will initiate the hierarchical self-assembly of short peptides into large-scale macromolecular assemblies with recommendable bioactivity. Herein, we tried to elaborate our understanding related to the strategies that have been adopted by few research groups to trigger self-assembly in the triple helical peptide system producing fascinating supramolecular structures. We have also touched upon the major epitopes within collagen that can be incorporated into collagen mimetic peptides for promoting bioactivity.
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Affiliation(s)
| | - Helena S. Azevedo
- School of Engineering and Material Science, Institute of Bioengineering, University of London, Queen Mary, Mile End Road, London E1 4NS, UK
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106
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Zhang L, Niu X, Sun L, She Z, Tan R, Wang W. Immune response of bovine sourced cross-linked collagen sponge for hemostasis. J Biomater Appl 2017; 32:920-931. [PMID: 29199891 DOI: 10.1177/0885328217744080] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A comprehensive immunogenicity scheme is proposed to examine immune response of bovine sourced hemostasis collagen sponge to establish foundation for further researches and decrease the incidence of adverse reaction in clinical trials. Compared with negative control group without any implant, spleen and lymph nodes morphology show no apparent swelling in mice with different doses of collagen sponge implants. Immune cells population, especially lymph nodes cells population, is practically coincident with organs. However, splenic cells display slight proliferation in early phase following collagen sponge implantation. Splenic cells apoptosis also demonstrates no significant difference among all groups. T lymphocytes subsets, CD4/CD8 cells ratio, in spleen and lymph nodes are practically normal. Splenic cells Ki67 + proportions do not exhibit significant difference between collagen sponge groups and negative control group. Humoral response is determined by detection of IgG and IgM concentration in serum, not exhibiting remarkable increase with collagen sponge implantation, compared to the drastic increase in positive control group with bovine tendon implantation. Local analysis around implants by hematoxylin-eosin staining discovers slight cell infiltration around collagen sponge. Tumour necrosis factor-α immunostaining indicates slight inflammation in early phase following collagen sponge implantation, but interferon-γ immunostaining is negligible even in positive control group. Collagen sponge, especially in high dose, may have evoked benign immune response in BALB/c mice, but this response is transient. The present evaluation scheme for immune response is integrated and comprehensive, suitable for various biomaterials.
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Affiliation(s)
- Lin Zhang
- 1 Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, P. R. China
| | - Xufeng Niu
- 1 Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, P. R. China
| | - Lei Sun
- 1 Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, P. R. China
| | - Zhending She
- 2 Shenzhen Lando Biomaterials Co., Ltd, Shenzhen, P. R. China
| | - Rongwei Tan
- 2 Shenzhen Lando Biomaterials Co., Ltd, Shenzhen, P. R. China
| | - Wei Wang
- 3 Department of Immunology, School of Basic Medical Sciences, 33133 Peking University , Key Laboratory of Medical Immunology, Ministry of Health (Peking University), Beijing, P. R. China
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107
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Nachlas ALY, Li S, Davis ME. Developing a Clinically Relevant Tissue Engineered Heart Valve-A Review of Current Approaches. Adv Healthc Mater 2017; 6. [PMID: 29171921 DOI: 10.1002/adhm.201700918] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 09/25/2017] [Indexed: 11/08/2022]
Abstract
Tissue engineered heart valves (TEHVs) have the potential to address the shortcomings of current implants through the combination of cells and bioactive biomaterials that promote growth and proper mechanical function in physiological conditions. The ideal TEHV should be anti-thrombogenic, biocompatible, durable, and resistant to calcification, and should exhibit a physiological hemodynamic profile. In addition, TEHVs may possess the capability to integrate and grow with somatic growth, eliminating the need for multiple surgeries children must undergo. Thus, this review assesses clinically available heart valve prostheses, outlines the design criteria for developing a heart valve, and evaluates three types of biomaterials (decellularized, natural, and synthetic) for tissue engineering heart valves. While significant progress has been made in biomaterials and fabrication techniques, a viable tissue engineered heart valve has yet to be translated into a clinical product. Thus, current strategies and future perspectives are also discussed to facilitate the development of new approaches and considerations for heart valve tissue engineering.
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Affiliation(s)
- Aline L. Y. Nachlas
- Wallace H Coulter Department of Biomedical Engineering Georgia Institute of Technology and Emory University Atlanta GA 30332 USA
| | - Siyi Li
- Wallace H Coulter Department of Biomedical Engineering Georgia Institute of Technology and Emory University Atlanta GA 30332 USA
| | - Michael E. Davis
- Wallace H Coulter Department of Biomedical Engineering Georgia Institute of Technology and Emory University Atlanta GA 30332 USA
- Children's Heart Research & Outcomes (HeRO) Center Children's Healthcare of Atlanta & Emory University Atlanta GA 30322 USA
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108
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Anand BG, Dubey K, Shekhawat DS, Prajapati KP, Kar K. Strategically Designed Antifibrotic Gold Nanoparticles to Prevent Collagen Fibril Formation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:13252-13261. [PMID: 29072918 DOI: 10.1021/acs.langmuir.7b01504] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Because uncontrolled accumulation of collagen fibrils has been implicated in a series of pathologies, inhibition of collagen fibril formation has become one of the necessary strategies to target such collagen-linked complications. The presence of hydroxyproline (Hyp) at the Y position in (Gly-X-Y)n sequence pattern of collagen is known to facilitate crucial hydrophobic and hydration-linked interactions that promote collagen fibril formation. Here, to target such Hyp-mediated interactions, we have synthesized uniform, thermostable, and hemocompatible Hyp coated gold nanoparticles (AuNPsHYP) and have examined their inhibition effect on the fibril formation of type I collagen. We found that collagen fibril formation is strongly suppressed in the presence of AuNPsHYP and no such suppression effect was observed in the presence of free Hyp and control Gly-coated nanoparticles at similar concentrations. Both isothermal titration calorimetric studies and bioinformatics analysis reveal possible interaction between Hyp and (Gly-Pro-Hyp) stretches of collagen triple-helical model peptides. Further, gold nanoparticles coated with proline (AuNPsPRO) and tryptophan (AuNPsTRP) also suppressed collagen fibril formation, suggesting their ability to interfere with aromatic-proline as well as hydrophobic interactions between collagen molecules. The Hyp molecules, when surface functionalized, are predicted to interfere with the Hyp-mediated forces that drive collagen self-assembly, and such inhibition effect may help in targeting collagen linked pathologies.
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Affiliation(s)
- Bibin Ganadhason Anand
- Department of Bioscience and Bioengineering, Indian Institute of Technology Jodhpur , Jodhpur, Rajasthan-342011, India
| | - Kriti Dubey
- Department of Bioscience and Bioengineering, Indian Institute of Technology Jodhpur , Jodhpur, Rajasthan-342011, India
| | - Dolat Singh Shekhawat
- Department of Bioscience and Bioengineering, Indian Institute of Technology Jodhpur , Jodhpur, Rajasthan-342011, India
| | | | - Karunakar Kar
- School of Life Sciences, Jawaharlal Nehru University , New Delhi-110067, India
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109
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Conway R, Murphy CL, Madigan A, Kavanagh P, Geraghty L, Redmond N, Helbert L, Carey JJ, Dunne E, Kenny D, McCarthy GM. Increased platelet reactivity as measured by plasma glycoprotein VI in gout. Platelets 2017; 29:821-826. [PMID: 29090618 DOI: 10.1080/09537104.2017.1366974] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Patients with gout have an increased risk of cardiovascular events. The glycoprotein VI (GPVI) receptor is found exclusively on platelets and megakaryocytes, is proteolytically cleaved upon platelet activation, and detectable in plasma as soluble GPVI (sGPVI). Therefore, elevated sGPVI is a marker of platelet activation and a risk marker for cardiovascular events. The aim of this study was to assess platelet activation, as measured by plasma sGPVI level in gout. Blood samples were taken from patients with gout or osteoarthritis, and from healthy volunteers. Demographic and clinical data were collected for all participants. Blood samples were processed as double-spun platelet-poor plasma. Plasma sGPVI levels were measured using enzyme-linked immunosorbent assay. Mann-Whitney U test was used to compare groups. In total, 91 patients were included, 27 during gout flare, 41 with intercritical gout, 23 with osteoarthritis, and 53 healthy controls. Median (interquartile range) sGPVI levels were 6.51 ng/mL (4.52, 8.41) in gout flare, 3.58 ng/mL (2.11, 5.55) in intercritical gout, 2.73 ng/mL (2.17, 3.72) in osteoarthritis, and 2.19 ng/mL (1.72, 3.31) in healthy controls. Plasma sGPVI levels in both gout groups were significantly increased compared to healthy controls (p < 0.005 for each), in gout flare compared to osteoarthritis (p < 0.005), and in gout flare compared to intercritical gout (p = 0.001). There was no significant difference in sGPVI levels in gout patients with and without tophi or in those prescribed colchicine. We conclude that patients with gout exhibit platelet hyperactivity as demonstrated by elevated sGPVI levels. Platelet activation is exacerbated in gout, especially during gout flares.
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Affiliation(s)
- Richard Conway
- a Department of Rheumatology , Mater Misericordiae University Hospital, Dublin Academic Medical Centre , Dublin , Ireland.,b CARD Newman Research Fellow, University College Dublin , Dublin , Ireland
| | - Claire-Louise Murphy
- c Centre for Rheumatology Research , University College London Division of Medicine , London , United Kingdom
| | - Anne Madigan
- a Department of Rheumatology , Mater Misericordiae University Hospital, Dublin Academic Medical Centre , Dublin , Ireland
| | - Patricia Kavanagh
- a Department of Rheumatology , Mater Misericordiae University Hospital, Dublin Academic Medical Centre , Dublin , Ireland
| | - Liz Geraghty
- a Department of Rheumatology , Mater Misericordiae University Hospital, Dublin Academic Medical Centre , Dublin , Ireland
| | - Niamh Redmond
- d Clinical Research Centre, Mater Misericordiae University Hospital, Dublin Academic Medical Centre , Dublin , Ireland
| | - Laura Helbert
- a Department of Rheumatology , Mater Misericordiae University Hospital, Dublin Academic Medical Centre , Dublin , Ireland
| | - John J Carey
- e Department of Rheumatology , Galway University Hospitals , Galway , Ireland
| | - Eimear Dunne
- f Cardiovascular Biology and Clinical Research Centre, Royal College of Surgeons in Ireland , Dublin , Ireland
| | - Dermot Kenny
- f Cardiovascular Biology and Clinical Research Centre, Royal College of Surgeons in Ireland , Dublin , Ireland
| | - Geraldine M McCarthy
- a Department of Rheumatology , Mater Misericordiae University Hospital, Dublin Academic Medical Centre , Dublin , Ireland
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110
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Karsdal MA, Nielsen SH, Leeming DJ, Langholm LL, Nielsen MJ, Manon-Jensen T, Siebuhr A, Gudmann NS, Rønnow S, Sand JM, Daniels SJ, Mortensen JH, Schuppan D. The good and the bad collagens of fibrosis - Their role in signaling and organ function. Adv Drug Deliv Rev 2017; 121:43-56. [PMID: 28736303 DOI: 10.1016/j.addr.2017.07.014] [Citation(s) in RCA: 305] [Impact Index Per Article: 43.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Revised: 07/14/2017] [Accepted: 07/17/2017] [Indexed: 12/11/2022]
Abstract
Usually the dense extracellular structure in fibrotic tissues is described as extracellular matrix (ECM) or simply as collagen. However, fibrosis is not just fibrosis, which is already exemplified by the variant morphological characteristics of fibrosis due to viral versus cholestatic, autoimmune or toxic liver injury, with reticular, chicken wire and bridging fibrosis. Importantly, the overall composition of the ECM, especially the relative amounts of the many types of collagens, which represent the most abundant ECM molecules and which centrally modulate cellular functions and physiological processes, changes dramatically during fibrosis progression. We hypothesize that there are good and bad collagens in fibrosis and that a change of location alone may change the function from good to bad. Whereas basement membrane collagen type IV anchors epithelial and other cells in a polarized manner, the interstitial fibroblast collagens type I and III do not provide directional information. In addition, feedback loops from biologically active degradation products of some collagens are examples of the importance of having the right collagen at the right place and at the right time controlling cell function, proliferation, matrix production and fate. Examples are the interstitial collagen type VI and basement membrane collagen type XVIII. Their carboxyterminal propeptides serve as an adipose tissue hormone, endotrophin, and as a regulator of angiogenesis, endostatin, respectively. We provide an overview of the 28 known collagen types and propose that the molecular composition of the ECM in fibrosis needs careful attention to assess its impact on organ function and its potential to progress or reverse. Consequently, to adequately assess fibrosis and to design optimal antifibrotic therapies, we need to dissect the molecular entity of fibrosis for the molecular composition and spatial distribution of collagens and the associated ECM.
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Affiliation(s)
- M A Karsdal
- Nordic Bioscience Biomarkers & Research A/S, Herlev, Denmark.
| | - S H Nielsen
- Nordic Bioscience Biomarkers & Research A/S, Herlev, Denmark
| | - D J Leeming
- Nordic Bioscience Biomarkers & Research A/S, Herlev, Denmark
| | - L L Langholm
- Nordic Bioscience Biomarkers & Research A/S, Herlev, Denmark
| | - M J Nielsen
- Nordic Bioscience Biomarkers & Research A/S, Herlev, Denmark
| | - T Manon-Jensen
- Nordic Bioscience Biomarkers & Research A/S, Herlev, Denmark
| | - A Siebuhr
- Nordic Bioscience Biomarkers & Research A/S, Herlev, Denmark
| | - N S Gudmann
- Nordic Bioscience Biomarkers & Research A/S, Herlev, Denmark
| | - S Rønnow
- Nordic Bioscience Biomarkers & Research A/S, Herlev, Denmark
| | - J M Sand
- Nordic Bioscience Biomarkers & Research A/S, Herlev, Denmark
| | - S J Daniels
- Nordic Bioscience Biomarkers & Research A/S, Herlev, Denmark
| | - J H Mortensen
- Nordic Bioscience Biomarkers & Research A/S, Herlev, Denmark
| | - D Schuppan
- Institute of Translational Immunology and Research Center for Immune Therapy, University Medical Center, Johannes Gutenberg University, Mainz, Germany; Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
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111
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Nile tilapia skin collagen sponge modified with chemical cross-linkers as a biomedical hemostatic material. Colloids Surf B Biointerfaces 2017; 159:89-96. [DOI: 10.1016/j.colsurfb.2017.07.061] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Revised: 07/05/2017] [Accepted: 07/25/2017] [Indexed: 11/23/2022]
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112
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Oakes RS, Polei MD, Skousen JL, Tresco PA. An astrocyte derived extracellular matrix coating reduces astrogliosis surrounding chronically implanted microelectrode arrays in rat cortex. Biomaterials 2017; 154:1-11. [PMID: 29117574 DOI: 10.1016/j.biomaterials.2017.10.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Revised: 09/25/2017] [Accepted: 10/02/2017] [Indexed: 12/27/2022]
Abstract
Available evidence suggests that the magnitude of the foreign body response (FBR) to implants placed in cortical brain tissue is affected by the extent of vasculature damage following device insertion and the magnitude of the ensuing macrophage response. Since the extracellular matrix (ECM) serves as a natural hemostatic and immunomodulatory agent, we examined the ability of an FDA-approved neurosurgical hemostatic coating and an ECM coating derived from primary rat astrocytes to reduce the FBR surrounding a penetrating microelectrode array chronically implanted in rat cortex. Using quantitative methods, we examined various components of the FBR in vitro and after implantation. In vitro assays showed that both coatings accelerated coagulation in a similar fashion but only the astrocyte-derived material suppressed macrophage activation. In addition, the ECM coating derived from astrocytes, also decreased the astrogliotic response 8 weeks after implantation. Neither coating had a significant influence on the intensity or spatial distribution of FBR biomarkers 1 week after implantation or on degree of macrophage activation or neuronal survival at the later time point. The results show that microelectrode coatings with similar hemostatic properties but different immunomodulatory characteristics differentially affect the FBR to an anchored, single-shank, silicon microelectrode array. The results also support the concept that divergent biological pathways affect the various components of the FBR in the CNS and suggests that decreasing its impact will require a multifaceted approach.
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Affiliation(s)
- Robert S Oakes
- Department of Bioengineering, University of Utah, 36 S Wasatch Dr, 151 SMBB, Room 4511, Salt Lake City, UT, 84112, USA
| | - Michael D Polei
- Department of Bioengineering, University of Utah, 36 S Wasatch Dr, 151 SMBB, Room 4511, Salt Lake City, UT, 84112, USA
| | - John L Skousen
- Department of Bioengineering, University of Utah, 36 S Wasatch Dr, 151 SMBB, Room 4511, Salt Lake City, UT, 84112, USA
| | - Patrick A Tresco
- Department of Bioengineering, University of Utah, 36 S Wasatch Dr, 151 SMBB, Room 4511, Salt Lake City, UT, 84112, USA.
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113
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Didelot M, Docq C, Wahl D, Lacolley P, Regnault V, Lagrange J. Platelet aggregation impacts thrombin generation assessed by calibrated automated thrombography. Platelets 2017; 29:156-161. [PMID: 29022492 DOI: 10.1080/09537104.2017.1356452] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
A calibrated automated thrombogram (CAT) is performed usually with human platelet-free plasma (PFP) but may be more relevant with platelet-rich plasma (PRP). In this case, platelets are not stimulated by subendothelial molecules like collagen. Our aim was to assess the consequence of strong (collagen) or weak (ADP) induction of platelet release and aggregation on thrombin generation. Platelet aggregation in PRP was triggered with 10 µg/mL collagen or 10 µM ADP using a lumi-aggregometer. Thrombin generation curves were monitored by CAT in different conditions: PRP, PRP with activated platelets (actPRP), aggregated PRP (agPRP), aggregated platelets resuspended in autologous PFP (resPRP), PFP and PFP obtained after aggregation (agPFP). We found a 3-fold shortening of the lag time and time to peak and a marked increase in velocity and thrombin peak without changes in endogenous thrombin potential (ETP) in agPRP with both agonists compared with PRP. The same holds true in agPFP but with a marked increase in ETP compared with PFP. Similar changes in the kinetics of thrombin generation were observed with actPRP-collagen and to a lesser extent in resPRP-collagen compared with PRP. By contrast, there were no modifications of the thrombin generation curves in actPRP-ADP. Alpha-2-macroglobin-thrombin complexes were unchanged in the different PRP conditions but were increased in PFP prepared from agPFP compared to control PFP. Platelet aggregation during activation by agonists other than thrombin did not increase thrombin generation but accelerated its kinetics mainly via platelet content release and platelet-derived extracellular vesicules formation. In diseases characterized by altered platelet granule content or release as well as altered platelet activation, a platelet aggregation step prior to CAT analysis may be clinically relevant to improve laboratory estimation of the bleeding/thrombotic balance.
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Affiliation(s)
- Mélusine Didelot
- a INSERM, U1116 , Faculté de Médecine , Vandoeuvre-les-Nancy , France.,b Université de Lorraine , Nancy , France
| | - Clémence Docq
- a INSERM, U1116 , Faculté de Médecine , Vandoeuvre-les-Nancy , France.,b Université de Lorraine , Nancy , France
| | - Denis Wahl
- a INSERM, U1116 , Faculté de Médecine , Vandoeuvre-les-Nancy , France.,b Université de Lorraine , Nancy , France.,c CHRU Nancy , Vandœuvre-lès-Nancy , France
| | - Patrick Lacolley
- a INSERM, U1116 , Faculté de Médecine , Vandoeuvre-les-Nancy , France.,b Université de Lorraine , Nancy , France.,c CHRU Nancy , Vandœuvre-lès-Nancy , France
| | - Véronique Regnault
- a INSERM, U1116 , Faculté de Médecine , Vandoeuvre-les-Nancy , France.,b Université de Lorraine , Nancy , France.,c CHRU Nancy , Vandœuvre-lès-Nancy , France
| | - Jérémy Lagrange
- a INSERM, U1116 , Faculté de Médecine , Vandoeuvre-les-Nancy , France.,b Université de Lorraine , Nancy , France.,d Center for Thrombosis and Hemostasis , University Medical Center Mainz , Mainz , Germany
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114
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Yao Y, Chen Y, Adili R, McKeown T, Chen P, Zhu G, Li D, Ling W, Ni H, Yang Y. Plant-based Food Cyanidin-3-Glucoside Modulates Human Platelet Glycoprotein VI Signaling and Inhibits Platelet Activation and Thrombus Formation. J Nutr 2017; 147:1917-1925. [PMID: 28855423 DOI: 10.3945/jn.116.245944] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 01/19/2017] [Accepted: 07/19/2017] [Indexed: 11/14/2022] Open
Abstract
Background: Platelets play an important role in hemostasis, thrombosis, and atherosclerosis. Glycoprotein VI (GPVI) is a major platelet receptor that interacts with exposed collagen on injured vessel walls. Our previous studies have shown that anthocyanins (a type of natural plant pigment) attenuate platelet function; however, whether anthocyanins affect collagen-induced GPVI signaling remains unknown.Objective: The objective of this study was to explore the effects of cyanidin-3-glucoside (Cy-3-g, one of the major bioactive compounds in anthocyanins) on platelet activation and thrombosis and the GPVI signaling pathway.Methods: Platelets from healthy men and women were isolated and incubated with different concentrations (0, 0.5, 5, and 50 μM) of Cy-3-g. The expression of activated integrin αIIbβ3, P-selectin, CD63, and CD40L, fibrinogen binding to platelets, and platelet aggregation were evaluated in vitro. Platelet adhesion and aggregation in whole blood under flow conditions were assessed in collagen-coated perfusion chambers. Thrombosis and hemostasis were assessed in 3-4-wk-old male C57BL/6J mice through FeCl3-induced intravital microscopy and tail bleeding time. The effect of Cy-3-g on collagen-induced human platelet GPVI signaling was explored with Western blot.Results: Cy-3-g attenuated platelet function in a dose-dependent manner. The 0.5-μM dose of Cy-3-g inhibited (P < 0.05) human platelet adhesion and aggregation to collagen at both venous (-54.02%) and arterial (-22.90%) shear stresses. The 5-μM dose inhibited (P < 0.05) collagen-induced human platelet activation (PAC-1: -48.21%, P-selectin: -50.63%), secretion (CD63: -73.89%, CD40L: -43.70%), fibrinogen binding (-56.79%), and aggregation (-17.81%). The 5-μM dose attenuated (P < 0.01) thrombus growth (-66.67%) without prolonging bleeding time in mice. The 50-μM dose downregulated (P < 0.05) collagen-induced GPVI signaling in human platelets and significantly decreased phosphorylation of Syk-linker for activation of T cells (LAT)-SLP76 (Syk: -39.08%, LAT: -32.25%, SLP76: -40.00%) and the expression of Lyn (-31.89%), Fyn (-36.27%), and phospholipase C-γ2 (-39.08%).Conclusions: Cy-3-g inhibits human platelet activation, aggregation, secretion, and thrombus formation, and downregulates the collagen-GPVI signaling pathway. Supplementation of Cy-3-g may have protective effects against atherothrombosis.
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Affiliation(s)
- Yanling Yao
- Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou, People's Republic of China.,Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Guangzhou, People's Republic of China
| | - Yanqiu Chen
- Guangzhou Women and Children's Medical Centre, Guangzhou, People's Republic of China
| | - Reheman Adili
- Toronto Platelet Immunobiology Group, University of Toronto, Toronto, Ontario, Canada.,Department of Laboratory Medicine, Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Toronto, Ontario, Canada; Departments of
| | - Thomas McKeown
- Department of Laboratory Medicine, Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Toronto, Ontario, Canada; Departments of
| | - Pingguo Chen
- Toronto Platelet Immunobiology Group, University of Toronto, Toronto, Ontario, Canada.,Department of Laboratory Medicine, Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Toronto, Ontario, Canada; Departments of
| | - Guangheng Zhu
- Toronto Platelet Immunobiology Group, University of Toronto, Toronto, Ontario, Canada.,Department of Laboratory Medicine, Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Toronto, Ontario, Canada; Departments of
| | - Dan Li
- Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou, People's Republic of China.,Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Guangzhou, People's Republic of China
| | - Wenhua Ling
- Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou, People's Republic of China.,Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Guangzhou, People's Republic of China
| | - Heyu Ni
- Toronto Platelet Immunobiology Group, University of Toronto, Toronto, Ontario, Canada; .,Department of Laboratory Medicine, Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Toronto, Ontario, Canada; Departments of.,Laboratory Medicine and Pathobiology.,Physiology, and.,Medicine, University of Toronto, Toronto, Ontario, Canada; and.,Canadian Blood Services, Toronto, Ontario, Canada
| | - Yan Yang
- Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou, People's Republic of China; .,Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Guangzhou, People's Republic of China
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115
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Bhunia SS, Saxena AK. Molecular modelling studies in explaining the higher GPVI antagonistic activity of the racemic 2-(4-methoxyphenylsulfonyl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxamide than its enantiomers. SAR AND QSAR IN ENVIRONMENTAL RESEARCH 2017; 28:783-799. [PMID: 29135287 DOI: 10.1080/1062936x.2017.1396247] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Accepted: 10/20/2017] [Indexed: 06/07/2023]
Abstract
The GPVI receptor on the platelets plays a major role in inhibiting arterial thrombosis with limited risk of bleeding and is considered a potential anti-thrombotic target for arterial thrombosis. In the reported anti-thrombotics, tetrahydropyridoindoles, the title compound was the best inhibitor of the collagen mediated platelet aggregation by antagonizing the platelet receptor GPVI. Interestingly, the racemic title compound showed better antagonism (IC50 racemate = 6.7 μM) than either of its enantiomers (IC50 S enantiomer = 25.3 μM; IC50 R enantiomer = 126.3 μM). In order to explain this, the molecular modelling approaches viz. site map analysis, protein-protein docking and molecular dynamics simulation were carried out, which led to the identification of a second binding site located near the primary antagonist binding site known to bind losartan. The induced fit docking studies for both the enantiomers at the primary and secondary binding sites showed that the S-enantiomer has better interactions at the primary binding site than the R-enantiomer, while the R-enantiomer has better interactions at the secondary site than the S-enantiomer. Hence, the overall interactions of the racemic compound containing equimolar mixture may be higher than any one of the enantiomers and may explain the higher activity than its enantiomers of the racemic compound.
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Affiliation(s)
- S S Bhunia
- a Division of Medicinal and Process Chemistry , CSIR-Central Drug Research Institute , Lucknow , India
| | - A K Saxena
- a Division of Medicinal and Process Chemistry , CSIR-Central Drug Research Institute , Lucknow , India
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116
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Nellenbach K, Brown AC. Peptide Mimetic Drugs for Modulating Thrombosis and Hemostasis. Drug Dev Res 2017; 78:236-244. [PMID: 28815651 DOI: 10.1002/ddr.21407] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 07/13/2017] [Indexed: 12/14/2022]
Abstract
Preclinical Research Hemostasis is the complex physiological process that stems bleeding at an injury site while simultaneously maintaining unobstructed circulation in other areas of the body. This system is kept in balance with finely tuned regulation by pro- and antithrombotic agents. When this balance is thrown out of equilibrium, uncontrolled bleeding, or thrombotic complications can occur. Because of the high number of hemostatic disorders, researchers are continually searching for improved technologies for controlling coagulation. Recently, peptide mimetic strategies have been employed to target and regulate various stages of the coagulation cascade. In this review, we present an overview of the coagulation cascade and provide a summary of various peptide-mimetic approaches for its modulation. Drug Dev Res 78 : 236-244, 2017. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Kimberly Nellenbach
- Joint Department of Biomedical Engineering, North Carolina State University and University of North Carolina at Chapel-Hill, Raleigh, North Carolina, 27606.,Comparative Medicine Institute, North Carolina State University, Raleigh, North Carolina, 27606
| | - Ashley C Brown
- Joint Department of Biomedical Engineering, North Carolina State University and University of North Carolina at Chapel-Hill, Raleigh, North Carolina, 27606.,Comparative Medicine Institute, North Carolina State University, Raleigh, North Carolina, 27606
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117
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Yan T, Cheng F, Wei X, Huang Y, He J. Biodegradable collagen sponge reinforced with chitosan/calcium pyrophosphate nanoflowers for rapid hemostasis. Carbohydr Polym 2017; 170:271-280. [DOI: 10.1016/j.carbpol.2017.04.080] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2017] [Revised: 04/25/2017] [Accepted: 04/25/2017] [Indexed: 12/22/2022]
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118
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Hatayama T, Nakada A, Nakamura H, Mariko W, Tsujimoto G, Nakamura T. Regeneration of gingival tissue using in situ tissue engineering with collagen scaffold. Oral Surg Oral Med Oral Pathol Oral Radiol 2017; 124:348-354.e1. [PMID: 28690084 DOI: 10.1016/j.oooo.2017.05.471] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 04/25/2017] [Accepted: 05/06/2017] [Indexed: 12/20/2022]
Abstract
OBJECTIVE The aim of the study was to evaluate 2 types of collagen scaffold for gingival regeneration. STUDY DESIGN Two types of collagen scaffolds, CS-pH7.4 and CS-pH3.0, were prepared by processing atelocollagen at pH 7.4 or 3.0, respectively, followed by dehydrothermal treatment. Gingival wounds with sizes of 4 × 6 mm (rectangle) or 6 mm diameter (circle) were made with buccal incisions in beagle dogs. The defective area was surgically covered with the CS-pH7.4, CS-pH3.0, or no scaffold (control). Gingival regeneration was assessed by monitoring the differences in the lengths of the epithelial and submucosal tissues at the wound site and the normal site. Histopathologic assessments were performed by 4 evaluators independently; statistical significance was evaluated by using the Wald test. RESULTS Significantly higher recovery of epithelial and submucosal tissues, which, in turn, resulted in recovery of gum thickness, was observed in gingival wounds treated with the CS-pH7.4 compared with that in the control. CS-pH3.0 treatment also resulted in higher gingival regeneration compared with the control; however, the effects were more pronounced in wounds treated with the CS-pH7.4. CS-pH7.4-treated wounds showed better gingival regeneration compared with the control and CS-pH3.0-treated wounds, even after adjusting for interevaluator differences using a linear mixed model. CONCLUSIONS CS-pH7.4 is a promising scaffold for gingival tissue regeneration.
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Affiliation(s)
- Takahide Hatayama
- Laboratory of Organ and Tissue Reconstruction, Department of Bioartificial Organs, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan
| | - Akira Nakada
- Laboratory of Organ and Tissue Reconstruction, Department of Bioartificial Organs, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan
| | - Hiroki Nakamura
- Laboratory of Organ and Tissue Reconstruction, Department of Bioartificial Organs, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan
| | - Wakatsuki Mariko
- Laboratory of Organ and Tissue Reconstruction, Department of Bioartificial Organs, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan
| | - Gentarou Tsujimoto
- Laboratory of Organ and Tissue Reconstruction, Department of Bioartificial Organs, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan
| | - Tatsuo Nakamura
- Department of Regeneration Science and Engineering, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan.
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119
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Reshmi CR, Menon T, Binoy A, Mishra N, Elyas KK, Sujith A. Poly(L-lactide-co-caprolactone)/collagen electrospun mat: Potential for wound dressing and controlled drug delivery. INT J POLYM MATER PO 2017. [DOI: 10.1080/00914037.2016.1252357] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- C. R. Reshmi
- Material Research Laboratory, Department of Chemistry, National Institute of Technology Calicut, Calicut, India
| | - Tara Menon
- Department of Biotechnology, University of Calicut, Calicut, India
| | - Anupama Binoy
- School of Biotechnology, Amrita Vishwa Vidyapeetham, Kollam, India
| | - Nandita Mishra
- School of Biotechnology, Amrita Vishwa Vidyapeetham, Kollam, India
| | - K. K. Elyas
- Department of Biotechnology, University of Calicut, Calicut, India
| | - A. Sujith
- Material Research Laboratory, Department of Chemistry, National Institute of Technology Calicut, Calicut, India
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120
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de Queiroz MR, de Sousa BB, da Cunha Pereira DF, Mamede CCN, Matias MS, de Morais NCG, de Oliveira Costa J, de Oliveira F. The role of platelets in hemostasis and the effects of snake venom toxins on platelet function. Toxicon 2017; 133:33-47. [PMID: 28435120 DOI: 10.1016/j.toxicon.2017.04.013] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Revised: 04/12/2017] [Accepted: 04/19/2017] [Indexed: 12/09/2022]
Abstract
The human body has a set of physiological processes, known as hemostasis, which keeps the blood fluid and free of clots in normal vessels; in the case of vascular injury, this process induces the local formation of a hemostatic plug, preventing hemorrhage. The hemostatic system in humans presents complex physiological interactions that involve platelets, plasma proteins, endothelial and subendothelial structures. Disequilibrium in the regulatory mechanisms that control the growth and the size of the thrombus is one of the factors that favors the development of diseases related to vascular disorders such as myocardial infarction and stroke, which are among the leading causes of death in the western world. Interfering with platelet function is a strategy for the treatment of thrombotic diseases. Antiplatelet drugs are used mainly in cases related to arterial thrombosis and interfere in the formation of the platelet plug by different mechanisms. Aspirin (acetylsalicylic acid) is the oldest and most widely used antithrombotic drug. Although highly effective in most cases, aspirin has limitations compared to other drugs used in the treatment of homeostatic disorders. For this reason, research related to molecules that interfere with platelet aggregation are of great relevance. In this regard, snake venoms are known to contain a number of molecules that interfere with hemostasis, including platelet function. The mechanisms by which snake venom components inhibit or activate platelet aggregation are varied and can be used as tools for the diagnosis and the treatment of several hemostatic disorders. The aim of this review is to present the role of platelets in hemostasis and the mechanisms by which snake venom toxins interfere with platelet function.
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Affiliation(s)
- Mayara Ribeiro de Queiroz
- Instituto de Genética e Bioquímica, Universidade Federal de Uberlândia, Uberlândia, MG, Brazil; Instituto Nacional de Ciência e Tecnologia em Nano-Biofarmacêutica (N-Biofar), Belo Horizonte, MG, Brazil
| | - Bruna Barbosa de Sousa
- Instituto de Genética e Bioquímica, Universidade Federal de Uberlândia, Uberlândia, MG, Brazil; Instituto Nacional de Ciência e Tecnologia em Nano-Biofarmacêutica (N-Biofar), Belo Horizonte, MG, Brazil
| | | | - Carla Cristine Neves Mamede
- Instituto de Ciências Agrárias, Universidade Federal de Uberlândia, Uberlândia, MG, Brazil; Instituto Nacional de Ciência e Tecnologia em Nano-Biofarmacêutica (N-Biofar), Belo Horizonte, MG, Brazil
| | - Mariana Santos Matias
- Instituto de Genética e Bioquímica, Universidade Federal de Uberlândia, Uberlândia, MG, Brazil
| | | | - Júnia de Oliveira Costa
- Instituto Federal de Educação, Ciência e Tecnologia do Triângulo Mineiro, Ituiutaba, MG, Brazil
| | - Fábio de Oliveira
- Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, Uberlândia, MG, Brazil; Instituto Nacional de Ciência e Tecnologia em Nano-Biofarmacêutica (N-Biofar), Belo Horizonte, MG, Brazil.
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121
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Molica F, Stierlin FB, Fontana P, Kwak BR. Pannexin- and Connexin-Mediated Intercellular Communication in Platelet Function. Int J Mol Sci 2017; 18:E850. [PMID: 28420171 PMCID: PMC5412434 DOI: 10.3390/ijms18040850] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 04/06/2017] [Accepted: 04/12/2017] [Indexed: 12/11/2022] Open
Abstract
The three major blood cell types, i.e., platelets, erythrocytes and leukocytes, are all produced in the bone marrow. While red blood cells are the most numerous and white cells are the largest, platelets are small fragments and account for a minor part of blood volume. However, platelets display a crucial function by preventing bleeding. Upon vessel wall injury, platelets adhere to exposed extracellular matrix, become activated, and form a platelet plug preventing hemorrhagic events. However, when platelet activation is exacerbated, as in rupture of an atherosclerotic plaque, the same mechanism may lead to acute thrombosis causing major ischemic events such as myocardial infarction or stroke. In the past few years, major progress has been made in understanding of platelet function modulation. In this respect, membrane channels formed by connexins and/or pannexins are of particular interest. While it is still not completely understood whether connexins function as hemichannels or gap junction channels to inhibit platelet aggregation, there is clear-cut evidence for a specific implication of pannexin1 channels in collagen-induced aggregation. The focus of this review is to summarize current knowledge of the role of connexins and pannexins in platelet aggregation and to discuss possible pharmacological approaches along with their limitations and future perspectives for new potential therapies.
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Affiliation(s)
- Filippo Molica
- Department of Pathology and Immunology, University of Geneva, 1211 Geneva, Switzerland.
- Department of Medical Specializations, Cardiology, University of Geneva, 1211 Geneva, Switzerland.
| | - Florian B Stierlin
- Department of Pathology and Immunology, University of Geneva, 1211 Geneva, Switzerland.
- Department of Medical Specializations, Cardiology, University of Geneva, 1211 Geneva, Switzerland.
- Geneva Platelet Group, University of Geneva, 1211 Geneva, Switzerland.
| | - Pierre Fontana
- Geneva Platelet Group, University of Geneva, 1211 Geneva, Switzerland.
- Division of Angiology and Haemostasis, Geneva University Hospitals, 1211 Geneva, Switzerland.
| | - Brenda R Kwak
- Department of Pathology and Immunology, University of Geneva, 1211 Geneva, Switzerland.
- Department of Medical Specializations, Cardiology, University of Geneva, 1211 Geneva, Switzerland.
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122
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Munoz-Pinto DJ, Erndt-Marino JD, Becerra-Bayona SM, Guiza-Arguello VR, Samavedi S, Malmut S, Reichert WM, Russell B, Höök M, Hahn MS. Evaluation of late outgrowth endothelial progenitor cell and umbilical vein endothelial cell responses to thromboresistant collagen-mimetic hydrogels. J Biomed Mater Res A 2017; 105:1712-1724. [PMID: 28218444 DOI: 10.1002/jbm.a.36045] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Revised: 02/01/2017] [Accepted: 02/16/2017] [Indexed: 01/01/2023]
Abstract
Bioactive coatings which support the adhesion of late-outgrowth peripheral blood endothelial progenitor cells (EOCs) are actively being investigated as a means to promote rapid endothelialization of "off-the-shelf," small-caliber arterial graft prostheses following implantation. In the present work, we evaluated the behavior of EOCs on thromboresistant graft coatings based on the collagen-mimetic protein Scl2-2 and poly(ethylene glycol) (PEG) diacrylate. Specifically, the attachment, proliferation, migration, and phenotype of EOCs on PEG-Scl2-2 hydrogels were evaluated as a function of Scl2-2 concentration (4, 8, and 12 mg/mL) relative to human umbilical vein endothelial cells (HUVECs). Results demonstrate the ability of each PEG-Scl2-2 hydrogel formulation to support EOC and HUVEC adhesion, proliferation, and spreading. However, only the 8 and 12 mg/mL PEG-Scl2-2 hydrogels were able to support stable EOC and HUVEC confluence. These PEG-Scl2-2 formulations were, therefore, selected for evaluation of their impact on EOC and HUVEC phenotype relative to PEG-collagen hydrogels. Cumulatively, both gene and protein level data indicated that 8 mg/mL PEG-Scl2-2 hydrogels supported similar or improved levels of EOC maturation relative to PEG-collagen controls based on evaluation of CD34, VEGFR2, PECAM-1, and VE-Cadherin. The 8 mg/mL PEG-Scl2-2 hydrogels also appeared to support similar or improved levels of EOC homeostatic marker expression relative to PEG-collagen hydrogels based on von Willebrand factor, collagen IV, NOS3, thrombomodulin, and E-selectin assessment. Combined, the present results indicate that PEG-Scl2-2 hydrogels warrant further investigation as "off-the-shelf" graft coatings. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 105A: 1712-1724, 2017.
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Affiliation(s)
- Dany J Munoz-Pinto
- Department of Engineering Science, Trinity University, San Antonio, Texas
| | - Josh D Erndt-Marino
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, New York
| | | | | | - Satyavrata Samavedi
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, New York
| | - Sarah Malmut
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, New York
| | - William M Reichert
- Department of Biomedical Engineering, Duke University, Durham, North Carolina
| | - Brooke Russell
- Center for Infectious and Inflammatory Diseases, TAM Health Science Center, Houston, Texas
| | - Magnus Höök
- Center for Infectious and Inflammatory Diseases, TAM Health Science Center, Houston, Texas
| | - Mariah S Hahn
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, New York
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123
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Li A, Chen J, Liang ZH, Cai J, Cai HH, Chen M. Comparison of ultrastructural and nanomechanical signature of platelets from acute myocardial infarction and platelet activation. Biochem Biophys Res Commun 2017; 486:245-251. [PMID: 28274875 DOI: 10.1016/j.bbrc.2017.03.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Accepted: 03/03/2017] [Indexed: 12/12/2022]
Abstract
Acute myocardial infarction (AMI) initiation and progression follow complex molecular and structural changes in the nanoarchitecture of platelets. However, it remains poorly understood how the transformation from health to AMI alters the ultrastructural and biomechanical properties of platelets within the platelet activation microenvironment. Here, we show using an atomic force microscope (AFM) that platelet samples, including living human platelets from the healthy and AMI patient, activated platelets from collagen-stimulated model, show distinct ultrastructural imaging and stiffness profiles. Correlative morphology obtained on AMI platelets and collagen-activated platelets display distinct pseudopodia structure and nanoclusters on membrane. In contrast to normal platelets, AMI platelets have a stiffer distribution resulting from complicated pathogenesis, with a prominent high-stiffness peak representative of platelet activation using AFM-based force spectroscopy. Similar findings are seen in specific stages of platelet activation in collagen-stimulated model. Further evidence obtained from different force measurement region with activated platelets shows that platelet migration is correlated to the more elasticity of pseudopodia while high stiffness at the center region. Overall, ultrastructural and nanomechanical profiling by AFM provides quantitative indicators in the clinical diagnostics of AMI with mechanobiological significance.
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Affiliation(s)
- Aiqun Li
- Department of Chemistry, College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China
| | - Jianwei Chen
- Department of Cardiology, The First Affiliated Hospital of Jinan University, Guangzhou 510630, China
| | - Zhi-Hong Liang
- Analytical and Testing Center, Jinan University, Guangzhou 510632, China
| | - Jiye Cai
- Department of Chemistry, College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China; State Key Laboratory of Quality Research in Chinese Medicines, Macau University of Science and Technology, Macau 999078, China
| | - Huai-Hong Cai
- Department of Chemistry, College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China.
| | - Min Chen
- Department of Respiratory Medicine, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524001, China; Department of Respiratory Medicine, The First Affiliated Hospital of Jinan University, Guangzhou 510630, China.
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124
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Lavery KS, Rhodes C, Mcgraw A, Eppihimer MJ. Anti-thrombotic technologies for medical devices. Adv Drug Deliv Rev 2017; 112:2-11. [PMID: 27496703 DOI: 10.1016/j.addr.2016.07.008] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Revised: 06/03/2016] [Accepted: 07/26/2016] [Indexed: 01/08/2023]
Abstract
Thrombosis associated with medical devices may lead to dramatic increases in morbidity, mortality and increased health care costs. Innovative strategies are being developed to reduce this complication and provide a safe biocompatible interface between device and blood. This article aims to describe the biological phenomena underlying device-associated thrombosis, and surveys the literature describing current and developing technologies designed to overcome this challenge. To reduce thrombosis, biomaterials with varying topographical properties and incorporating anti-thrombogenic substances on their surface have demonstrated potential. Overall, there is extensive literature describing technical solutions to reduce thrombosis associated with medical devices, but clinical results are required to demonstrate significant long-term benefits.
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Affiliation(s)
- Karen S Lavery
- Preclinical Sciences, Boston Scientific Corporation, 100 Boston Scientific Way, Marlborough, MA 01752-1234, United States
| | - Candace Rhodes
- Preclinical Sciences, Boston Scientific Corporation, 100 Boston Scientific Way, Marlborough, MA 01752-1234, United States
| | - Adam Mcgraw
- Preclinical Sciences, Boston Scientific Corporation, 100 Boston Scientific Way, Marlborough, MA 01752-1234, United States
| | - Michael J Eppihimer
- Preclinical Sciences, Boston Scientific Corporation, 100 Boston Scientific Way, Marlborough, MA 01752-1234, United States
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125
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Geelhoed WJ, Moroni L, Rotmans JI. Utilizing the Foreign Body Response to Grow Tissue Engineered Blood Vessels in Vivo. J Cardiovasc Transl Res 2017; 10:167-179. [PMID: 28205013 PMCID: PMC5437130 DOI: 10.1007/s12265-017-9731-7] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Accepted: 01/23/2017] [Indexed: 12/21/2022]
Abstract
It is well known that the number of patients requiring a vascular grafts for use as vessel replacement in cardiovascular diseases, or as vascular access site for hemodialysis is ever increasing. The development of tissue engineered blood vessels (TEBV's) is a promising method to meet this increasing demand vascular grafts, without having to rely on poorly performing synthetic options such as polytetrafluoroethylene (PTFE) or Dacron. The generation of in vivo TEBV's involves utilizing the host reaction to an implanted biomaterial for the generation of completely autologous tissues. Essentially this approach to the development of TEBV's makes use of the foreign body response to biomaterials for the construction of the entire vascular replacement tissue within the patient's own body. In this review we will discuss the method of developing in vivo TEBV's, and debate the approaches of several research groups that have implemented this method.
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Affiliation(s)
- Wouter J Geelhoed
- Department of Internal Medicine, Leiden University Medical Center, Leiden, The Netherlands.,Eindhoven Laboratory of Experimental Vascular Medicine, Leiden University Medical Center, Leiden, The Netherlands
| | - Lorenzo Moroni
- MERLN Institute for Technology Inspired Regenerative Medicine, Complex Tissue Regeneration, Maastricht University, Maastricht, The Netherlands
| | - Joris I Rotmans
- Department of Internal Medicine, Leiden University Medical Center, Leiden, The Netherlands. .,Eindhoven Laboratory of Experimental Vascular Medicine, Leiden University Medical Center, Leiden, The Netherlands.
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126
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Cheng X, Shao Z, Li C, Yu L, Raja MA, Liu C. Isolation, Characterization and Evaluation of Collagen from Jellyfish Rhopilema esculentum Kishinouye for Use in Hemostatic Applications. PLoS One 2017; 12:e0169731. [PMID: 28103327 PMCID: PMC5245839 DOI: 10.1371/journal.pone.0169731] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Accepted: 12/21/2016] [Indexed: 11/18/2022] Open
Abstract
Hemostat has been a crucial focus since human body is unable to control massive blood loss, and collagen proves to be an effective hemostat in previous studies. In this study, collagen was isolated from the mesoglea of jellyfish Rhopilema esculentum Kishinouye and its hemostatic property was studied. The yields of acid-soluble collagen (ASC) and pepsin-soluble (PSC) were 0.12% and 0.28% respectively. The SDS-PAGE patterns indicated that the collagen extracted from jellyfish mesoglea was type I collagen. The lyophilized jellyfish collagen sponges were cross-linked with EDC and interconnected networks in the sponges were revealed by scanning electron microscope (SEM). Collagen sponges exhibited higher water absorption rates than medical gauze and EDC/NHS cross-linking method could improve the stability of the collagen sponges. Compared with medical gauze groups, the blood clotting indexes (BCIs) of collagen sponges were significantly decreased (P < 0.05) and the concentration of collagen also had an influence on the hemostatic property (P < 0.05). Collagen sponges had an improved hemostatic ability compared to the gauze control in tail amputation rat models. Hemostatic mechanism studies showed that hemocytes and platelets could adhere and aggregate on the surface of collagen sponge. All properties make jellyfish collagen sponge to be a suitable candidate used as hemostatic material and for wound healing applications.
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Affiliation(s)
- Xiaochen Cheng
- College of Marine Life Sciences, Ocean University of China, Qingdao, P. R. China
| | - Ziyu Shao
- College of Marine Life Sciences, Ocean University of China, Qingdao, P. R. China
| | - Chengbo Li
- College of Marine Life Sciences, Ocean University of China, Qingdao, P. R. China
| | - Lejun Yu
- College of Marine Life Sciences, Ocean University of China, Qingdao, P. R. China
| | - Mazhar Ali Raja
- College of Marine Life Sciences, Ocean University of China, Qingdao, P. R. China
| | - Chenguang Liu
- College of Marine Life Sciences, Ocean University of China, Qingdao, P. R. China
- * E-mail:
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127
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Seon GM, Lee MH, Kwon BJ, Kim MS, Koo MA, Kim D, Seomun Y, Kim JT, Park JC. Functional improvement of hemostatic dressing by addition of recombinant batroxobin. Acta Biomater 2017; 48:175-185. [PMID: 27769944 DOI: 10.1016/j.actbio.2016.10.024] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Revised: 10/12/2016] [Accepted: 10/17/2016] [Indexed: 11/24/2022]
Abstract
Although a number of natural materials have been used as hemostatic agents, many substances do not act quickly enough. Here, we created a novel dressings using collagen and chitosan with recombinant batroxobin (r-Bat) to promote faster and more effective hemostasis. We hypothesized that r-Bat would promote synergetic blood coagulation because it contains a blood coagulation active site different than those of collagen and chitosan. Our results suggest that each substances can maintain hemostatic properties while in the mixed dressings and that our novel hemostatic dressings promotes potent control of bleeding, as demonstrated by a whole blood assay and rat hemorrhage model. In a rat femoral artery model, the scaffold with a high r-Bat concentration more rapidly controlled excessive bleeding. This novel dressings has enormous possible for rapidly controlling bleeding and it improves upon the effect of collagen and chitosan used alone. Our novel r-Bat dressings is a possible candidate for improving preoperative care and displays promising properties as an absorbable agent in hemostasis. STATEMENT OF SIGNIFICANCE Despite the excellent hemostatic properties of collagen and chitosan pads, they reported to brittle behavior and lack sufficient hemostatic effect within relevant time. Therefore, we created a novel pad using collagen and chitosan with recombinant batroxobin (r-Bat). r-Bat acts as a thrombin-like enzyme in the coagulation cascade. Specifically, r-Bat, in contrast to thrombin, only splits fibrinopeptide A off and does not influence other hemostatic factors or cells, which makes it clinically useful as a stable hemostatic agent. Also the materials in the pad have synergetic effect because they have different hemostatic mechanisms in the coagulation cascade. This report propose the novel hemostatic pad isreasonable that a great potential for excessive bleeding injury and improve effects of natural substance hemostatic pad.
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128
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Bhunia SS, Misra A, Khan IA, Gaur S, Jain M, Singh S, Saxena A, Hohlfield T, Dikshit M, Saxena AK. Novel Glycoprotein VI Antagonists as Antithrombotics: Synthesis, Biological Evaluation, and Molecular Modeling Studies on 2,3-Disubstituted Tetrahydropyrido(3,4-b)indoles. J Med Chem 2016; 60:322-337. [DOI: 10.1021/acs.jmedchem.6b01360] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Shome S. Bhunia
- Academy of Scientific and Innovative Research, New Delhi 110 025, India
| | | | | | | | | | | | - Aaruni Saxena
- Institut
für Pharmakologie und Klinische Pharmakologie, Heinrich-Heine-Universität Düsseldorf, Moorenstraße 5, 40225 Düsseldorf, Germany
| | - Thomas Hohlfield
- Institut
für Pharmakologie und Klinische Pharmakologie, Heinrich-Heine-Universität Düsseldorf, Moorenstraße 5, 40225 Düsseldorf, Germany
| | | | - Anil K. Saxena
- Academy of Scientific and Innovative Research, New Delhi 110 025, India
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129
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Zhang X, Xu B, Puperi DS, Wu Y, West JL, Grande-Allen KJ. Application of hydrogels in heart valve tissue engineering. J Long Term Eff Med Implants 2016; 25:105-34. [PMID: 25955010 DOI: 10.1615/jlongtermeffmedimplants.2015011817] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
With an increasing number of patients requiring valve replacements, there is heightened interest in advancing heart valve tissue engineering (HVTE) to provide solutions to the many limitations of current surgical treatments. A variety of materials have been developed as scaffolds for HVTE including natural polymers, synthetic polymers, and decellularized valvular matrices. Among them, biocompatible hydrogels are generating growing interest. Natural hydrogels, such as collagen and fibrin, generally show good bioactivity but poor mechanical durability. Synthetic hydrogels, on the other hand, have tunable mechanical properties; however, appropriate cell-matrix interactions are difficult to obtain. Moreover, hydrogels can be used as cell carriers when the cellular component is seeded into the polymer meshes or decellularized valve scaffolds. In this review, we discuss current research strategies for HVTE with an emphasis on hydrogel applications. The physicochemical properties and fabrication methods of these hydrogels, as well as their mechanical properties and bioactivities are described. Performance of some hydrogels including in vitro evaluation using bioreactors and in vivo tests in different animal models are also discussed. For future HVTE, it will be compelling to examine how hydrogels can be constructed from composite materials to replicate mechanical properties and mimic biological functions of the native heart valve.
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Affiliation(s)
- Xing Zhang
- Department of Bioengineering, Rice University, Houston, TX 77030, USA; Institute of Metal Research, Chinese Academy of Sciences, Shenyang, Liaoning 110016, China
| | - Bin Xu
- Department of Bioengineering, Rice University, Houston, TX 77030, USA
| | - Daniel S Puperi
- Department of Bioengineering, Rice University, Houston, TX 77030, USA
| | - Yan Wu
- Department of Biomedical Engineering, Duke University, Durham, NC 27708, USA
| | - Jennifer L West
- Department of Biomedical Engineering, Duke University, Durham, NC 27708, USA
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130
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Tricoci P. Protease-Activated Receptor-1 Antagonists Post-Percutaneous Coronary Intervention. Interv Cardiol Clin 2016; 6:57-66. [PMID: 27886823 DOI: 10.1016/j.iccl.2016.08.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Thrombin is a potent platelet agonist, and protease-activated receptor-1 (PAR-1) is the main thrombin receptor in human platelets and thrombin. PAR-1 antagonism has attracted interest as a potential therapeutic target to reduce atherothrombotic events in patients with atherosclerotic disease, especially coronary artery disease. In this review, the author describes the rationale of PAR-1 antagonism for the reduction of atherothrombotic events and reviews the key phase 3 trial results, with special attention to analyses in percutaneous coronary intervention patients.
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Affiliation(s)
- Pierluigi Tricoci
- Division of Cardiology, Duke Clinical Research Institute, Duke University Medical Center, 2400 Pratt Street, 0311 Terrace Level, Box 3850 DUMC, Durham, NC 27705, USA.
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131
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Schoeman RM, Rana K, Danes N, Lehmann M, Di Paola JA, Fogelson AL, Leiderman K, Neeves KB. A microfluidic model of hemostasis sensitive to platelet function and coagulation. Cell Mol Bioeng 2016; 10:3-15. [PMID: 28529666 DOI: 10.1007/s12195-016-0469-0] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Abstract
Hemostasis is the process of sealing a vascular injury with a thrombus to arrest bleeding. The type of thrombus that forms depends on the nature of the injury and hemodynamics. There are many models of intravascular thrombus formation whereby blood is exposed to prothrombotic molecules on a solid substrate. However, there are few models of extravascular thrombus formation whereby blood escapes into the extravascular space through a hole in the vessel wall. Here, we describe a microfluidic model of hemostasis that includes vascular, vessel wall, and extravascular compartments. Type I collagen and tissue factor, which support platelet adhesion and initiate coagulation, respectively, were adsorbed to the wall of the injury channel and act synergistically to yield a stable thrombus that stops blood loss into the extravascular compartment in ~7.5 min. Inhibiting factor VIII to mimic hemophilia A results in an unstable thrombus that was unable to close the injury. Treatment with a P2Y12 antagonist to reduce platelet activation prolonged the closure time two-fold compared to controls. Taken together, these data demonstrate a hemostatic model that is sensitive to both coagulation and platelet function and can be used to study coagulopathies and platelet dysfunction that result in excessive blood loss.
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Affiliation(s)
- R M Schoeman
- Chemical and Biological Engineering Department, Colorado School of Mines, Golden, CO
| | - K Rana
- Chemical and Biological Engineering Department, Colorado School of Mines, Golden, CO
| | - N Danes
- Applied Mathematics and Statistics Department, Colorado School of Mines, Golden, CO
| | - M Lehmann
- Chemical and Biological Engineering Department, Colorado School of Mines, Golden, CO
| | - J A Di Paola
- Department of Pediatrics, University of Colorado Denver, Aurora, CO
| | - A L Fogelson
- Departments of Mathematics and Bioengineering, University of Utah, Salt Lake City, Utah
| | - K Leiderman
- Department of Pediatrics, University of Colorado Denver, Aurora, CO
| | - K B Neeves
- Chemical and Biological Engineering Department, Colorado School of Mines, Golden, CO.,Department of Pediatrics, University of Colorado Denver, Aurora, CO
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132
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Chatterjee M, Gawaz M. Clinical significance of receptor shedding-platelet GPVI as an emerging diagnostic and therapeutic tool. Platelets 2016; 28:362-371. [PMID: 27753514 DOI: 10.1080/09537104.2016.1227062] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Platelet membrane bedecked with a wide array of receptors offers a platform to regulate platelet responsiveness, thrombotic propensity, inflammatory disposition, and immune reactivity under diverse pathophysiological conditions. Ectopic proteolytic cleavage of such receptors irreversibly inactivates receptor-mediated intracellular signaling governing cellular functions, further releases soluble fragments into circulation which might modulate functions of target cells. Glycoprotein VI-(GPVI) is a membrane glycoprotein expressed in platelets and megakaryocytes. Platelet GPVI surface expression is enhanced following acute ischemic events like myocardial infarction and cerebral stroke, serves as an imminent diagnostic tool independent of markers of tissue necrosis, and is associated with poor prognosis. Platelets undergo GPVI shedding and thereby contribute to soluble plasma levels of sGPVI, with distinct diagnostic and prognostic attributes. This review summarizes the functional significance and mechanistic basis whereby GPVI surface availability is up- or downregulated on platelets and the impact of GPVI in diagnostic, prognostic, and therapeutic strategies in diseases where platelets play a regulatory role. Further, we also highlight how novel non-invasive platelet-based diagnostic and therapeutic strategies have evolved utilizing GPVI for lesion-directed antithrombotic therapy or to counteract atherosclerotic disposition to ameliorate care of patients particularly in the context of cardio-cerebro-vascular medicine.
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Affiliation(s)
- Madhumita Chatterjee
- a Innere Medizin III, Kardiologie und Kreislauferkrankungen , Eberhard Karls Universität , Tübingen , Germany
| | - Meinrad Gawaz
- a Innere Medizin III, Kardiologie und Kreislauferkrankungen , Eberhard Karls Universität , Tübingen , Germany
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133
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Kawai T, Tanuma Y, Matsui K, Suzuki O, Takahashi T, Kamakura S. Clinical safety and efficacy of implantation of octacalcium phosphate collagen composites in tooth extraction sockets and cyst holes. J Tissue Eng 2016; 7:2041731416670770. [PMID: 27757220 PMCID: PMC5051665 DOI: 10.1177/2041731416670770] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Accepted: 09/01/2016] [Indexed: 11/16/2022] Open
Abstract
It was demonstrated that octacalcium phosphate collagen composite achieved notable bone regeneration in bone defects in preclinical studies. On the basis of the research results, an investigator-initiated exploratory clinical trial was conducted after approval from a local Institutional Review Board. This clinical study was performed as a single-arm non-randomized intervention study. Octacalcium phosphate collagen composite was implanted into a total of 10 cases of alveolar bone defects after tooth extractions and cystectomy. Safety assessment was performed in terms of the clinical course and several consecutive laboratory examinations, and sequential radiographs were used for efficacy assessment. All participants uneventfully completed the clinical trial without major problems in their general condition. Postoperative wound swelling was observed, as also commonly seen in tooth extraction or cystectomy. Although no serious liver dysfunction, renal dysfunction, electrolyte imbalance, or abnormal urinalysis results were recognized, the number of white blood cells and C-reactive protein level temporarily increased after the operation. An increase in radiopacity in the octacalcium phosphate collagen composite–implanted site was observed in all cases. Finally, the border between the original bone and the octacalcium phosphate collagen composite–implanted site became indistinguishable. These results suggest that octacalcium phosphate collagen composite could be utilized safely in clinical situations in the future.
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Affiliation(s)
- Tadashi Kawai
- Division of Oral and Maxillofacial Surgery, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Yuji Tanuma
- Division of Oral and Maxillofacial Surgery, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Keiko Matsui
- Division of Oral and Maxillofacial Surgery, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Osamu Suzuki
- Division of Craniofacial Function Engineering, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Tetsu Takahashi
- Division of Oral and Maxillofacial Surgery, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Shinji Kamakura
- Bone Regenerative Engineering Laboratory, Graduate School of Biomedical Engineering, Tohoku University, Sendai, Japan
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134
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Tsoumani ME, Tatsidou PT, Ntalas IV, Goudevenos JA, Tselepis AD. Dynamic platelet adhesion in patients with an acute coronary syndrome: The effect of antiplatelet therapy. Platelets 2016; 27:812-820. [DOI: 10.1080/09537104.2016.1192113] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Maria E. Tsoumani
- Department of Chemistry, Laboratory of Biochemistry, School of Medicine, University of Ioannina, Ioannina, Greece
| | - Prokopia T. Tatsidou
- Department of Chemistry, Laboratory of Biochemistry, School of Medicine, University of Ioannina, Ioannina, Greece
| | - Ioannis V. Ntalas
- Department of Cardiology, School of Medicine, University of Ioannina, Ioannina, Greece
| | - John A. Goudevenos
- Department of Cardiology, School of Medicine, University of Ioannina, Ioannina, Greece
| | - Alexandros D. Tselepis
- Department of Chemistry, Laboratory of Biochemistry, School of Medicine, University of Ioannina, Ioannina, Greece
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135
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Saxena A, Valicherla GR, Jain GK, Bhatta RS, Saxena AK, Gayen JR. Metabolic profiling of a novel antithrombotic compound, S002-333 and enantiomers: metabolic stability, species comparison andin vitro-in vivoextrapolation. Biopharm Drug Dispos 2016; 37:185-99. [DOI: 10.1002/bdd.1995] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Revised: 10/01/2015] [Accepted: 10/12/2015] [Indexed: 11/07/2022]
Affiliation(s)
- Amrita Saxena
- Pharmacokinetics and Metabolism Division; CSIR - Central Drug Research Institute; Lucknow 226031 India
| | - Guru R. Valicherla
- Pharmacokinetics and Metabolism Division; CSIR - Central Drug Research Institute; Lucknow 226031 India
| | - Girish K. Jain
- Pharmacokinetics and Metabolism Division; CSIR - Central Drug Research Institute; Lucknow 226031 India
| | - Rabi S. Bhatta
- Pharmacokinetics and Metabolism Division; CSIR - Central Drug Research Institute; Lucknow 226031 India
| | - Anil K. Saxena
- Medicinal and Processing Chemistry Division; CSIR - Central Drug Research Institute; Lucknow 226031 India
| | - Jiaur R. Gayen
- Pharmacokinetics and Metabolism Division; CSIR - Central Drug Research Institute; Lucknow 226031 India
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137
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Castro-Ceseña AB, Camacho-Villegas TA, Lugo-Fabres PH, Novitskaya EE, McKittrick J, Licea-Navarro A. Effect of starch on the mechanical and in vitro properties of collagen-hydroxyapatite sponges for applications in dentistry. Carbohydr Polym 2016; 148:78-85. [PMID: 27185118 DOI: 10.1016/j.carbpol.2016.04.056] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2016] [Revised: 04/10/2016] [Accepted: 04/12/2016] [Indexed: 10/21/2022]
Abstract
This study sought to improve the mechanical and blood-absorbing properties of collagen sponges, while keeping them compressible, by incorporating blended hydroxyapatite (HA)-starch. Results were compared with CollaPlug(®) (pure collagen). The elastic modulus increased from 1.5±0.2kPa for CollaPlug(®) to 49±8kPa for sponges with composition 1:4:10 (collagen:HA:starch, by weight). The modified microstructure and surface area provided by the starch granules on the sponges improved cell viability. Sponges with composition 1:4:10 maintained their blood-clotting capability with almost no change from 5 to 15min after contact with blood, while CollaPlug(®) diminished to about half its capacity to absorb blood and form clots. Incorporation of HA-starch into the sponges with composition of 1:4:10, increased the elastic modulus of the collagen-HA sponges, making them more structurally robust. The viability of cells and the blood-clotting capability increased with starch incorporation.
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Affiliation(s)
- Ana B Castro-Ceseña
- Materials Science and Engineering Program, University of California, San Diego, La Jolla, CA 92093, USA.
| | - Tanya A Camacho-Villegas
- Biomedical Innovation Department, Centro de Investigación Científica y de Educación Superior de Ensenada (CICESE), Carretera Ensenada-Tijuana No. 3918, Zona Playitas, C.P. 22860, Ensenada, Baja California, México.
| | - Pavel H Lugo-Fabres
- Biomedical Innovation Department, Centro de Investigación Científica y de Educación Superior de Ensenada (CICESE), Carretera Ensenada-Tijuana No. 3918, Zona Playitas, C.P. 22860, Ensenada, Baja California, México.
| | - Ekaterina E Novitskaya
- Department of Mechanical and Aerospace Engineering, University of California, San Diego, La Jolla, CA 92093, USA.
| | - Joanna McKittrick
- Materials Science and Engineering Program, University of California, San Diego, La Jolla, CA 92093, USA; Department of Mechanical and Aerospace Engineering, University of California, San Diego, La Jolla, CA 92093, USA.
| | - Alexei Licea-Navarro
- Biomedical Innovation Department, Centro de Investigación Científica y de Educación Superior de Ensenada (CICESE), Carretera Ensenada-Tijuana No. 3918, Zona Playitas, C.P. 22860, Ensenada, Baja California, México.
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138
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Arias-Loza PA, Jung P, Abeßer M, Umbenhauer S, Williams T, Frantz S, Schuh K, Pelzer T. Development and Characterization of an Inducible Rat Model of Chronic Thromboembolic Pulmonary Hypertension. Hypertension 2016; 67:1000-5. [PMID: 27045032 DOI: 10.1161/hypertensionaha.116.07247] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2016] [Accepted: 02/29/2016] [Indexed: 12/31/2022]
Abstract
Chronic thromboembolic pulmonary hypertension (CTEPH) is an entity of PH that not only limits patients quality of life but also causes significant morbidity and mortality. The treatment of choice is pulmonary endarterectomy. However numerous patients do not qualify for pulmonary endarterectomy or present with residual vasculopathy post pulmonary endarterectomy and require specific vasodilator treatment. Currently, there is no available specific small animal model of CTEPH that could serve as tool to identify targetable molecular pathways and to test new treatment options. Thus, we generated and standardized a rat model that not only resembles functional and histological features of CTEPH but also emulates thrombi fibrosis. The pulmonary embolism protocol consisted of 3 sequential tail vein injections of fibrinogen/collagen-covered polystyrene microspheres combined with thrombin and administered to 10-week-old male Wistar rats. After the third embolism, rats developed characteristic features of CTEPH including elevated right ventricular systolic pressure, right ventricular cardiomyocyte hypertrophy, pulmonary artery remodeling, increased serum brain natriuretic peptide levels, thrombi fibrosis, and formation of pulmonary cellular-fibrotic lesions. The current animal model seems suitable for detailed study of CTEPH pathophysiology and permits preclinical testing of new pharmacological therapies against CTEPH.
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Affiliation(s)
- Paula-Anahi Arias-Loza
- From the Department of Internal Medicine I, University Clinic of Wuerzburg, Wuerzburg, Germany (P.-A.A.-L., P.J., S.U., T.W., S.F., T.P.); Comprehensive Heart Failure Center Wuerzburg, Wuerzburg, Germany (P.-A.A.-L., S.U., T.W., T.P.); Institute of Physiology, University Wuerzburg, Wuerzburg, Germany (M.A., K.S.); and University Clinic and Polyclinic for Internal Medicine III, University Clinic Halle, Halle, Germany (S.F.)
| | - Pius Jung
- From the Department of Internal Medicine I, University Clinic of Wuerzburg, Wuerzburg, Germany (P.-A.A.-L., P.J., S.U., T.W., S.F., T.P.); Comprehensive Heart Failure Center Wuerzburg, Wuerzburg, Germany (P.-A.A.-L., S.U., T.W., T.P.); Institute of Physiology, University Wuerzburg, Wuerzburg, Germany (M.A., K.S.); and University Clinic and Polyclinic for Internal Medicine III, University Clinic Halle, Halle, Germany (S.F.)
| | - Marco Abeßer
- From the Department of Internal Medicine I, University Clinic of Wuerzburg, Wuerzburg, Germany (P.-A.A.-L., P.J., S.U., T.W., S.F., T.P.); Comprehensive Heart Failure Center Wuerzburg, Wuerzburg, Germany (P.-A.A.-L., S.U., T.W., T.P.); Institute of Physiology, University Wuerzburg, Wuerzburg, Germany (M.A., K.S.); and University Clinic and Polyclinic for Internal Medicine III, University Clinic Halle, Halle, Germany (S.F.)
| | - Sandra Umbenhauer
- From the Department of Internal Medicine I, University Clinic of Wuerzburg, Wuerzburg, Germany (P.-A.A.-L., P.J., S.U., T.W., S.F., T.P.); Comprehensive Heart Failure Center Wuerzburg, Wuerzburg, Germany (P.-A.A.-L., S.U., T.W., T.P.); Institute of Physiology, University Wuerzburg, Wuerzburg, Germany (M.A., K.S.); and University Clinic and Polyclinic for Internal Medicine III, University Clinic Halle, Halle, Germany (S.F.)
| | - Tatjana Williams
- From the Department of Internal Medicine I, University Clinic of Wuerzburg, Wuerzburg, Germany (P.-A.A.-L., P.J., S.U., T.W., S.F., T.P.); Comprehensive Heart Failure Center Wuerzburg, Wuerzburg, Germany (P.-A.A.-L., S.U., T.W., T.P.); Institute of Physiology, University Wuerzburg, Wuerzburg, Germany (M.A., K.S.); and University Clinic and Polyclinic for Internal Medicine III, University Clinic Halle, Halle, Germany (S.F.)
| | - Stefan Frantz
- From the Department of Internal Medicine I, University Clinic of Wuerzburg, Wuerzburg, Germany (P.-A.A.-L., P.J., S.U., T.W., S.F., T.P.); Comprehensive Heart Failure Center Wuerzburg, Wuerzburg, Germany (P.-A.A.-L., S.U., T.W., T.P.); Institute of Physiology, University Wuerzburg, Wuerzburg, Germany (M.A., K.S.); and University Clinic and Polyclinic for Internal Medicine III, University Clinic Halle, Halle, Germany (S.F.)
| | - Kai Schuh
- From the Department of Internal Medicine I, University Clinic of Wuerzburg, Wuerzburg, Germany (P.-A.A.-L., P.J., S.U., T.W., S.F., T.P.); Comprehensive Heart Failure Center Wuerzburg, Wuerzburg, Germany (P.-A.A.-L., S.U., T.W., T.P.); Institute of Physiology, University Wuerzburg, Wuerzburg, Germany (M.A., K.S.); and University Clinic and Polyclinic for Internal Medicine III, University Clinic Halle, Halle, Germany (S.F.)
| | - Theo Pelzer
- From the Department of Internal Medicine I, University Clinic of Wuerzburg, Wuerzburg, Germany (P.-A.A.-L., P.J., S.U., T.W., S.F., T.P.); Comprehensive Heart Failure Center Wuerzburg, Wuerzburg, Germany (P.-A.A.-L., S.U., T.W., T.P.); Institute of Physiology, University Wuerzburg, Wuerzburg, Germany (M.A., K.S.); and University Clinic and Polyclinic for Internal Medicine III, University Clinic Halle, Halle, Germany (S.F.).
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139
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van Rees DJ, Szilagyi K, Kuijpers TW, Matlung HL, van den Berg TK. Immunoreceptors on neutrophils. Semin Immunol 2016; 28:94-108. [PMID: 26976825 PMCID: PMC7129252 DOI: 10.1016/j.smim.2016.02.004] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Revised: 02/24/2016] [Accepted: 02/26/2016] [Indexed: 12/12/2022]
Abstract
Neutrophil activities must be tightly controlled to maintain immune homeostasis. Activating and inhibitory receptors balance the outcome of immune cell activation. Immunoreceptors contain Ig-like extracellular domains and signal via ITAMs or ITIMs. Syk or SHP/SHIP mediate downstream signaling after immunoreceptor activation. Targeting immunoreceptors provides opportunities for therapeutic interventions.
Neutrophils play a critical role in the host defense against infection, and they are able to perform a variety of effector mechanisms for this purpose. However, there are also a number of pathological conditions, including autoimmunity and cancer, in which the activities of neutrophils can be harmful to the host. Thus the activities of neutrophils need to be tightly controlled. As in the case of other immune cells, many of the neutrophil effector functions are regulated by a series of immunoreceptors on the plasma membrane. Here, we review what is currently known about the functions of the various individual immunoreceptors and their signaling in neutrophils. While these immunoreceptors allow for the recognition of a diverse range of extracellular ligands, such as cell surface structures (like proteins, glycans and lipids) and extracellular matrix components, they commonly signal via conserved ITAM or ITIM motifs and their associated downstream pathways that depend on the phosphorylation of tyrosine residues in proteins and/or inositol lipids. This allows for a balanced homeostatic regulation of neutrophil effector functions. Given the number of available immunoreceptors and their fundamental importance for neutrophil behavior, it is perhaps not surprising that pathogens have evolved means to evade immune responses through some of these pathways. Inversely, some of these receptors evolved to specifically recognize these pathogens. Finally, some interactions mediated by immunoreceptors in neutrophils have been identified as promising targets for therapeutic intervention.
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Affiliation(s)
- Dieke J van Rees
- Sanquin Research and Landsteiner Laboratory, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Katka Szilagyi
- Sanquin Research and Landsteiner Laboratory, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Taco W Kuijpers
- Sanquin Research and Landsteiner Laboratory, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands; Emma Children's Hospital, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Hanke L Matlung
- Sanquin Research and Landsteiner Laboratory, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Timo K van den Berg
- Sanquin Research and Landsteiner Laboratory, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.
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140
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Abstract
Collagens mediate essential hemostasis by maintaining the integrity and stability of the vascular wall. Imbalanced turnover of collagens by uncontrolled formation and/or degradation may result in pathologic conditions such as fibrosis. Thickening of the vessel wall because of accumulation of collagens may lead to arterial occlusion or thrombosis. Thinning of the wall because of collagen degradation or deficiency may lead to rupture of the vessel wall or aneurysm. Preventing excessive hemorrhage or thrombosis relies on collagen-mediated actions. Von Willebrand factor, integrins and glycoprotein VI, as well as clotting factors, can bind collagen to restore normal hemostasis after trauma. This review outlines the essential roles of collagens in mediating hemostasis, with a focus on collagens types I, III, IV, VI, XV, and XVIII.
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Affiliation(s)
| | - N G Kjeld
- Nordic Bioscience A/S, Herlev, Denmark
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141
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Shi X, Yang J, Huang J, Long Z, Ruan Z, Xiao B, Xi X. Effects of different shear rates on the attachment and detachment of platelet thrombi. Mol Med Rep 2016; 13:2447-56. [PMID: 26847168 PMCID: PMC4768970 DOI: 10.3892/mmr.2016.4825] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Accepted: 01/15/2016] [Indexed: 11/06/2022] Open
Abstract
Thrombosis and hemostasis take place in flowing blood, which generates shear forces. The effect of different shear rates, particularly pathological forces, on platelet thrombus formation remains to be fully elucidated. The present study observed the morphological characteristics and hierarchical structure of thrombi on the collagen surface at a wide range of wall shear rates (WSRs) and examined the underlying mechanisms. Calcein AM‑labeled whole blood was perfused over a collagen‑coated surface at different shear rates set by a Bioflux 200 microfluidic device and the thrombi formed were assessed for area coverage, the height and the hierarchical structure defined by the extent of platelet activation and packing density. The factors that affect thrombus formation were also investigated. Platelet thrombus formation varied under different WSRs, for example, dispersed platelet adhesion mixed with erythrocytes was observed at 125‑250 s(‑1), extensive and thin platelet thrombi were observed at 500‑1,500 s(‑1), and sporadic, thick thrombi were observed at pathological WSRs of 2,500‑5,000 s(‑1), which showed a tendency to be shed. With increasing WSRs, the height of the thrombi showed an increasing linear trend, whereas the total fluorescence intensity and area of the thrombi exhibited a parabolic curve‑like change, with a turning point at a WSR of 2,500 s(‑1). The number of thrombi, the average fluorescence intensity and the area per thrombus showed similar trends, with an initial upwards incline followed by a decline. The thrombi formed at higher WSRs had a thicker shell, which led to a more densely packed core. Platelet thrombus formation under shear‑flow was regulated by the adhesive strength, which was mediated by receptor‑ligand interaction, the platelet deposition induced by shear rates and the detachment by the dynamic force of flow. This resulted in a balance between thrombus attachment, including adhesion and aggregation, and detachment. Collectively, compared with physiological low WSRs, pathological high WSRs caused thicker and more easily shed thrombi with more condensed cores, which was regulated by an attachment‑detachment balance. These results provide novel insights into the properties of thrombus formation on collagen at different WSRs, and offers possible explanations for certain clinical physiopathological phenomena, including physical hemostasis and pathological thrombosis.
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Affiliation(s)
- Xiaofeng Shi
- Department of Hematology, Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, Collaborative Innovation Center of Hematology, Sino‑French Research Center for Life Sciences and Genomics, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200025, P.R. China
| | - Jichun Yang
- Department of Hematology, Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, Collaborative Innovation Center of Hematology, Sino‑French Research Center for Life Sciences and Genomics, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200025, P.R. China
| | - Jiansong Huang
- Department of Hematology, Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, Collaborative Innovation Center of Hematology, Sino‑French Research Center for Life Sciences and Genomics, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200025, P.R. China
| | - Zhangbiao Long
- Department of Hematology, Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, Collaborative Innovation Center of Hematology, Sino‑French Research Center for Life Sciences and Genomics, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200025, P.R. China
| | - Zheng Ruan
- Department of Hematology, Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, Collaborative Innovation Center of Hematology, Sino‑French Research Center for Life Sciences and Genomics, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200025, P.R. China
| | - Bing Xiao
- Department of Hematology, Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, Collaborative Innovation Center of Hematology, Sino‑French Research Center for Life Sciences and Genomics, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200025, P.R. China
| | - Xiaodong Xi
- Department of Hematology, Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, Collaborative Innovation Center of Hematology, Sino‑French Research Center for Life Sciences and Genomics, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200025, P.R. China
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142
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Lysyl oxidase is associated with increased thrombosis and platelet reactivity. Blood 2016; 127:1493-501. [PMID: 26755713 DOI: 10.1182/blood-2015-02-629667] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Accepted: 12/17/2015] [Indexed: 01/26/2023] Open
Abstract
Lysyl oxidase (LOX) is overexpressed in various pathologies associated with thrombosis, such as arterial stenosis and myeloproliferative neoplasms (MPNs). LOX is elevated in the megakaryocytic lineage of mouse models of MPNs and in patients with MPNs. To gain insight into the role of LOX in thrombosis and platelet function without compounding the influences of other pathologies, transgenic mice expressing LOX in wild-type megakaryocytes and platelets (Pf4-Lox(tg/tg)) were generated. Pf4-Lox(tg/tg) mice had a normal number of platelets; however, time to vessel occlusion after endothelial injury was significantly shorter in Pf4-Lox(tg/tg) mice, indicating a higher propensity for thrombus formation in vivo. Exploring underlying mechanisms, we found that Pf4-Lox(tg/tg) platelets adhere better to collagen and have greater aggregation response to lower doses of collagen compared with controls. Platelet activation in response to the ligand for collagen receptor glycoprotein VI (cross-linked collagen-related peptide) was unaffected. However, the higher affinity of Pf4-Lox(tg/tg) platelets to the collagen sequence GFOGER implies that the collagen receptor integrin α2β1 is affected by LOX. Taken together, our findings demonstrate that LOX enhances platelet activation and thrombosis.
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143
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Modaresifar K, Azizian S, Hadjizadeh A. Nano/Biomimetic Tissue Adhesives Development: From Research to Clinical Application. POLYM REV 2016. [DOI: 10.1080/15583724.2015.1114493] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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144
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Howes JM, Pugh N, Knäuper V, Farndale RW. Modified platelet deposition on matrix metalloproteinase 13 digested collagen I. J Thromb Haemost 2015; 13:2253-9. [PMID: 26447617 PMCID: PMC4855633 DOI: 10.1111/jth.13166] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Accepted: 09/23/2015] [Indexed: 11/28/2022]
Abstract
BACKGROUND Atherothrombosis underlies acute coronary syndromes, including unstable angina and acute myocardial infarction. Within the unstable plaque, monocytes express collagenolytic matrix metalloproteinases (MMPs), including MMP-13, which degrades fibrous collagen. Following rupture, vessel wall components including degraded collagen are exposed to circulating platelets. Platelet receptors then mediate the recruitment and activation of platelets to form a thrombus, blocking blood flow and resulting in myocardial infarction and sudden death. OBJECTIVES Here we aim to provide information on the effects of collagen degradation on platelet adhesion and thrombus formation. METHODS Using increasing concentrations of MMP-13, we induced progressive degradation of fibrous and monomeric collagen I, visualized by electrophoresis, and then investigated the capacity of the resulting fragments to support static platelet adhesion and thrombus formation in whole flowing blood. RESULTS Both integrin and glycoprotein VI-dependent interactions with fibrous collagen underpin high levels of platelet adhesion under both conditions, with little obvious effect of MMP-13 treatment. Static platelet adhesion to monomeric collagen was strongly α2β1-dependent regardless of degradation status. Under flow conditions, partially degraded monomeric collagen supported increased thrombus deposition at 10 μg mL(-1) MMP-13, falling close to background when collagen degradation was complete (100 μg mL(-1) MMP-13). CONCLUSIONS New binding activities come into play after partial digestion of collagen monomers, and net platelet-reactivity through all axes is abolished as degradation becomes more complete.
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Affiliation(s)
- J-M Howes
- Department of Biochemistry, University of Cambridge, Cambridge, UK
| | - N Pugh
- Department of Biomedical and Forensic Science, Anglia Ruskin University, Cambridge, UK
| | - V Knäuper
- Cardiff University Dental School, Cardiff, UK
| | - R W Farndale
- Department of Biochemistry, University of Cambridge, Cambridge, UK
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145
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Regulation of Early Steps of GPVI Signal Transduction by Phosphatases: A Systems Biology Approach. PLoS Comput Biol 2015; 11:e1004589. [PMID: 26584182 PMCID: PMC4652868 DOI: 10.1371/journal.pcbi.1004589] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Accepted: 10/06/2015] [Indexed: 11/19/2022] Open
Abstract
We present a data-driven mathematical model of a key initiating step in platelet activation, a central process in the prevention of bleeding following Injury. In vascular disease, this process is activated inappropriately and causes thrombosis, heart attacks and stroke. The collagen receptor GPVI is the primary trigger for platelet activation at sites of injury. Understanding the complex molecular mechanisms initiated by this receptor is important for development of more effective antithrombotic medicines. In this work we developed a series of nonlinear ordinary differential equation models that are direct representations of biological hypotheses surrounding the initial steps in GPVI-stimulated signal transduction. At each stage model simulations were compared to our own quantitative, high-temporal experimental data that guides further experimental design, data collection and model refinement. Much is known about the linear forward reactions within platelet signalling pathways but knowledge of the roles of putative reverse reactions are poorly understood. An initial model, that includes a simple constitutively active phosphatase, was unable to explain experimental data. Model revisions, incorporating a complex pathway of interactions (and specifically the phosphatase TULA-2), provided a good description of the experimental data both based on observations of phosphorylation in samples from one donor and in those of a wider population. Our model was used to investigate the levels of proteins involved in regulating the pathway and the effect of low GPVI levels that have been associated with disease. Results indicate a clear separation in healthy and GPVI deficient states in respect of the signalling cascade dynamics associated with Syk tyrosine phosphorylation and activation. Our approach reveals the central importance of this negative feedback pathway that results in the temporal regulation of a specific class of protein tyrosine phosphatases in controlling the rate, and therefore extent, of GPVI-stimulated platelet activation.
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146
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Piraino F, Selimović Š. A Current View of Functional Biomaterials for Wound Care, Molecular and Cellular Therapies. BIOMED RESEARCH INTERNATIONAL 2015; 2015:403801. [PMID: 26509154 PMCID: PMC4609773 DOI: 10.1155/2015/403801] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Revised: 08/20/2015] [Accepted: 08/23/2015] [Indexed: 01/04/2023]
Abstract
The intricate process of wound healing involves activation of biological pathways that work in concert to regenerate a tissue microenvironment consisting of cells and external cellular matrix (ECM) with enzymes, cytokines, and growth factors. Distinct stages characterize the mammalian response to tissue injury: hemostasis, inflammation, new tissue formation, and tissue remodeling. Hemostasis and inflammation start right after the injury, while the formation of new tissue, along with migration and proliferation of cells within the wound site, occurs during the first week to ten days after the injury. In this review paper, we discuss approaches in tissue engineering and regenerative medicine to address each of these processes through the application of biomaterials, either as support to the native microenvironment or as delivery vehicles for functional hemostatic, antibacterial, or anti-inflammatory agents. Molecular therapies are also discussed with particular attention to drug delivery methods and gene therapies. Finally, cellular treatments are reviewed, and an outlook on the future of drug delivery and wound care biomaterials is provided.
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Affiliation(s)
- Francesco Piraino
- Institute of Bioengineering, School of Engineering, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Šeila Selimović
- American Association for the Advancement of Science, Washington, DC 20520, USA
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147
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Thongbai B, Rapior S, Hyde KD, Wittstein K, Stadler M. Hericium erinaceus, an amazing medicinal mushroom. Mycol Prog 2015. [DOI: 10.1007/s11557-015-1105-4] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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148
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Saxena A, Valicherla GR, Joshi P, Saxena R, Cheruvu SH, Bhunia SS, Jain GK, Siddiqui HH, Saxena AK, Gayen JR. Pharmacokinetics, dose proportionality and permeability of S002-333 and its enantiomers, a potent antithrombotic agent, in rabbits. Xenobiotica 2015; 45:1016-23. [DOI: 10.3109/00498254.2015.1034224] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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149
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Tang J, Fang Y, Han Y, Bai X, Yan X, Zhang Y, Lai R, Zhang Z. YY-39, a tick anti-thrombosis peptide containing RGD domain. Peptides 2015; 68:99-104. [PMID: 25152502 DOI: 10.1016/j.peptides.2014.08.008] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2014] [Revised: 08/14/2014] [Accepted: 08/14/2014] [Indexed: 10/24/2022]
Abstract
Ticks are obligatory blood feeding ectoparasites, which continuously attach to their hosts for 1-2 weeks. There are many biologically active compounds in tick salivary glands interfering host haemostatic system and to successfully obtain blood meal. Several platelet aggregation inhibitors have been identified from ticks. A family of conserved peptides, which were identified from transcriptome analysis of many tick salivary glands, were found to contain unique primary structure including predicted mature peptides of 39-47 amino acid residues in length and a Pro/Glu(P/E)-Pro/His(P/H)-Lys-Gly-Asp(RGD) domain. Given their unique structure and RGD domain, they are considered a novel family of disintegrins that inhibit platelet aggregation. One of them (YY-39) was tested for its effects on platelets and thrombosis in vivo. YY-39 was found effectively to inhibit platelet aggregation induced by adenosine diphosphate (ADP), thrombin and thromboxane A2 (TXA2). Furthermore, YY-39 blocked platelet adhesion to soluble collagen and bound to purified GPIIb/IIIa in a dose-dependent manner. In in vivo experiments, YY-39 reduced thrombus weight effectively in a rat arteriovenous shunt model and inhibited thrombosis in a carrageenan-induced mouse tail thrombosis model. Combined with their prevalence in ticks and platelet inhibitory functions, this family of peptides might be conserved tick anti-haemostatic molecules.
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Affiliation(s)
- Jing Tang
- Life Sciences College of Nanjing Agricultural University, 1st Weigang, Nanjing, Jiangsu 210095, China
| | - Yaqun Fang
- Life Sciences College of Nanjing Agricultural University, 1st Weigang, Nanjing, Jiangsu 210095, China
| | - Yajun Han
- Life Sciences College of Nanjing Agricultural University, 1st Weigang, Nanjing, Jiangsu 210095, China
| | - Xuewei Bai
- Life Sciences College of Nanjing Agricultural University, 1st Weigang, Nanjing, Jiangsu 210095, China
| | - Xiuwen Yan
- Life Sciences College of Nanjing Agricultural University, 1st Weigang, Nanjing, Jiangsu 210095, China
| | - Yun Zhang
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Kunming 650223, Yunnan, China
| | - Ren Lai
- Life Sciences College of Nanjing Agricultural University, 1st Weigang, Nanjing, Jiangsu 210095, China; Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Kunming 650223, Yunnan, China.
| | - Zhiye Zhang
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Kunming 650223, Yunnan, China; University of Chinese Academy of Sciences, Beijing 100009, China.
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150
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Abstract
In the United States and Europe, the number of topical adhesives, surgical sealants, and hemostats approved for use in the surgical setting is ever expanding although no single device fills all medical and surgical needs to replace sutures. As more surgical procedures are performed through laparoscopic and robotic approaches, these devices are becoming more important, and current research is focused on solving the limitations of conventional wound treatments. This review article discusses clinical applications of various biologically derived and synthetic products that are currently available to surgeons and those that are in development.
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Affiliation(s)
- Lindsey Sanders
- Department of Bioengineering, Clemson University, Clemson, South Carolina
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