1
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Muraoka WT, Nair PM, Darlington DN, Wu X, Bynum JA, Cap AP. A novel, quantitative clot retraction assay to evaluate platelet function. Platelets 2023; 34:2254403. [PMID: 37700390 DOI: 10.1080/09537104.2023.2254403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 08/24/2023] [Accepted: 08/25/2023] [Indexed: 09/14/2023]
Abstract
Blood platelets are crucial to prevent excessive bleeding following injury to blood vessels. Platelets are crucial for the formation of clots and for clot strength. Platelet activation involves aggregation, attachment to fibrin and clot retraction. Most assays that address platelet function measure platelet aggregation, not clot retraction. Here, we describe a 96-well-based clot retraction assay that requires a relatively short runtime and small sample volume. The assay involves continuous optical density monitoring of platelet-rich plasma that is activated with thrombin. The data can be analyzed using time-series analytical tools to generate quantitative information about different phases of clot formation and clot retraction. The assay demonstrated good repeatability and reproducibility and was robust to different calcium concentrations. Impairment of platelet bioenergetics, actin polymerization, fibrin interaction, and signaling significantly affected clot retraction and was detected and showed good agreement with light transmission aggregometry, suggesting that clot retraction is predictive of platelet function. Using this microplate clot retraction assay, we showed a significant difference in platelets stored in autologous plasma compared with platelet additive solution after 7 days of room temperature storage.
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Affiliation(s)
- Wayne T Muraoka
- U.S. Army Institute of Surgical Research, Fort Sam Houston, TX, USA
| | - Prajeeda M Nair
- U.S. Army Institute of Surgical Research, Fort Sam Houston, TX, USA
| | - Daniel N Darlington
- U.S. Army Institute of Surgical Research, Fort Sam Houston, TX, USA
- The Department of Surgery, University of Texas Health, San Antonio, TX, USA
| | - Xiaowu Wu
- U.S. Army Institute of Surgical Research, Fort Sam Houston, TX, USA
- The Department of Surgery, University of Texas Health, San Antonio, TX, USA
| | - James A Bynum
- U.S. Army Institute of Surgical Research, Fort Sam Houston, TX, USA
- The Department of Surgery, University of Texas Health, San Antonio, TX, USA
| | - Andrew P Cap
- U.S. Army Institute of Surgical Research, Fort Sam Houston, TX, USA
- The Department of Surgery, University of Texas Health, San Antonio, TX, USA
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2
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Litvinov RI, Weisel JW. Blood clot contraction: Mechanisms, pathophysiology, and disease. Res Pract Thromb Haemost 2023; 7:100023. [PMID: 36760777 PMCID: PMC9903854 DOI: 10.1016/j.rpth.2022.100023] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 11/09/2022] [Accepted: 11/17/2022] [Indexed: 01/18/2023] Open
Abstract
A State of the Art lecture titled "Blood Clot Contraction: Mechanisms, Pathophysiology, and Disease" was presented at the International Society on Thrombosis and Haemostasis (ISTH) Congress in 2022. This was a systematic description of blood clot contraction or retraction, driven by activated platelets and causing compaction of the fibrin network along with compression of the embedded erythrocytes. The consequences of clot contraction include redistribution of the fibrin-platelet meshwork toward the periphery of the clot and condensation of erythrocytes in the core, followed by their deformation from the biconcave shape into polyhedral cells (polyhedrocytes). These structural signatures of contraction have been found in ex vivo thrombi derived from various locations, which indicated that clots undergo intravital contraction within the blood vessels. In hemostatic clots, tightly packed polyhedrocytes make a nearly impermeable seal that stems bleeding and is impaired in hemorrhagic disorders. In thrombosis, contraction facilitates the local blood flow by decreasing thrombus obstructiveness, reducing permeability, and changing susceptibility to fibrinolytic enzymes. However, in (pro)thrombotic conditions, continuous background platelet activation is followed by platelet exhaustion, refractoriness, and impaired intravital clot contraction, which is associated with weaker thrombi predisposed to embolization. Therefore, assays that detect imperfect in vitro clot contraction have potential diagnostic and prognostic values for imminent or ongoing thrombosis and thrombotic embolism. Collectively, the contraction of blood clots and thrombi is an underappreciated and understudied process that has a pathogenic and clinical significance in bleeding and thrombosis of various etiologies. Finally, we have summarized relevant new data on this topic presented during the 2022 ISTH Congress.
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Affiliation(s)
- Rustem I Litvinov
- Department of Cell and Developmental Biology, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA
| | - John W Weisel
- Department of Cell and Developmental Biology, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA
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3
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Tumour-associated Mucin1 correlates with the procoagulant properties of cancer cells of epithelial origin. THROMBOSIS UPDATE 2022. [DOI: 10.1016/j.tru.2022.100123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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4
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D’Ambrogio G, Zahhaf O, Le MQ, Gouriou Y, Josset L, Pialoux V, Lermusiaux P, Capsal JF, Cottinet PJ, Schiava ND. Investigation of Blood Coagulation Using Impedance Spectroscopy: Toward Innovative Biomarkers to Assess Fibrinogenesis and Clot Retraction. Biomedicines 2022; 10:biomedicines10081833. [PMID: 36009382 PMCID: PMC9404805 DOI: 10.3390/biomedicines10081833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Revised: 07/18/2022] [Accepted: 07/27/2022] [Indexed: 12/04/2022] Open
Abstract
This study focused on a coagulation assessment based on the novel technique of blood-impedance-magnitude measurement. With the impedance characterization of recalcified human blood, it was possible to identify two significative biomarkers (i.e., measurable indicators) related to fibrin formation (1st marker) and clot retraction (2nd marker). The confocal microscopy of clotting blood provided a complete visual analysis of all the events occurring during coagulation, validating the significance of the impedance biomarkers. By analyzing the impedance phase angle (Φ) of blood during coagulation, as well as those of the clot and serum expelled after retraction, it was possible to further clarify the origin of the 2nd marker. Finally, an impedance-magnitude analysis and a rotational thromboelastometry test (ROTEM®) were simultaneously performed on blood sampled from the same donor; the results pointed out that the 1st marker was related to clotting time. The developed technique gives rise to a comprehensive and evolutive insight into coagulation, making it possible to progressively follow the whole process in real time. Moreover, this approach allows coagulation to be tested on any materials’ surface, laying the ground for new studies related to contact coagulation, meaning, thrombosis occurring on artificial implants. In a near future, impedance spectroscopy could be employed in the material characterization of cardiovascular prostheses whose properties could be monitored in situ and/or online using effective biomarkers.
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Affiliation(s)
- Giulia D’Ambrogio
- University Lyon, INSA-Lyon, LGEF, EA682, 69621 Villeurbanne, France; (G.D.); (O.Z.); (M.-Q.L.); (J.-F.C.); (N.D.S.)
| | - Omar Zahhaf
- University Lyon, INSA-Lyon, LGEF, EA682, 69621 Villeurbanne, France; (G.D.); (O.Z.); (M.-Q.L.); (J.-F.C.); (N.D.S.)
| | - Minh-Quyen Le
- University Lyon, INSA-Lyon, LGEF, EA682, 69621 Villeurbanne, France; (G.D.); (O.Z.); (M.-Q.L.); (J.-F.C.); (N.D.S.)
| | - Yves Gouriou
- CarMeN Laboratory, University Lyon, INSERM, INRA, INSA Lyon, Université Claude Bernard Lyon 1, 69500 Bron, France;
| | - Laurie Josset
- Laboratoire Interuniversitaire de la Biologie et de la Motricité (LIBM), Université Claude Bernard Lyon 1, EA 7424, 69266 Villeurbane, France; (L.J.); (V.P.)
| | - Vincent Pialoux
- Laboratoire Interuniversitaire de la Biologie et de la Motricité (LIBM), Université Claude Bernard Lyon 1, EA 7424, 69266 Villeurbane, France; (L.J.); (V.P.)
| | | | - Jean-Fabien Capsal
- University Lyon, INSA-Lyon, LGEF, EA682, 69621 Villeurbanne, France; (G.D.); (O.Z.); (M.-Q.L.); (J.-F.C.); (N.D.S.)
| | - Pierre-Jean Cottinet
- University Lyon, INSA-Lyon, LGEF, EA682, 69621 Villeurbanne, France; (G.D.); (O.Z.); (M.-Q.L.); (J.-F.C.); (N.D.S.)
- Correspondence:
| | - Nellie Della Schiava
- University Lyon, INSA-Lyon, LGEF, EA682, 69621 Villeurbanne, France; (G.D.); (O.Z.); (M.-Q.L.); (J.-F.C.); (N.D.S.)
- Groupement Hospitalier Edouard Herriot, 69003 Lyon, France;
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5
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Wu H, Zhang B, Huang CC, Peng C, Zhou Q, Jiang X. Ultrasound-Guided Intravascular Sonothrombolysis With a Dual Mode Ultrasound Catheter: In Vitro Study. IEEE TRANSACTIONS ON ULTRASONICS, FERROELECTRICS, AND FREQUENCY CONTROL 2022; 69:1917-1925. [PMID: 35201986 PMCID: PMC9702596 DOI: 10.1109/tuffc.2022.3153929] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Thromboembolism in vessels often leads to stroke or heart attack and even sudden death unless brought under control. Sonothrombolysis based on ultrasound contrast agents has shown promising outcome in effective treatment of thromboembolism. Intravascular sonothrombolysis transducer was reported recently for unprecedented sonothrombolysis in vitro. However, it is necessary to provide an imaging guide during thrombolysis in clinical applications for optimal treatment efficiency. In this article, a dual mode ultrasound catheter was developed by combining a 16-MHz high-frequency element (imaging transducer) and a 220-kHz low-frequency element (treatment transducer) for sonothrombolysis in vitro. The treatment transducer was designed with a 20-layer PZT-5A stack with the aperture size of 1.2×1.2 mm2, and the imaging transducer with the aperture size of 1.2×1.2 mm2 was attached in front of the treatment transducer. Both transducers were assembled into a customized 2-lm 10-Fr catheter. In vitro experiment was carried out using a bovine blood clot. Imaging tests were conducted, showing that the backscattering signals can be obtained with a high signal-to-noise ratio (SNR) for the 16-MHz imaging transducer. Sonothrombolysis was performed successfully that the volume of clot was reduced significantly after the 30-min treatment. The size changes of clot were observed clearly using the 16-MHz M-mode imaging during the thrombolysis. The findings suggest that the proposed ultrasound-guided intravascular sonothrombolysis can be enhanced since the position of treatment transducer can be adjusted with the target at the clot due to the imaging guide.
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6
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Jansen EE, Hartmann M. Clot Retraction: Cellular Mechanisms and Inhibitors, Measuring Methods, and Clinical Implications. Biomedicines 2021; 9:1064. [PMID: 34440268 PMCID: PMC8394358 DOI: 10.3390/biomedicines9081064] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 08/09/2021] [Accepted: 08/17/2021] [Indexed: 11/22/2022] Open
Abstract
Platelets have important functions in hemostasis. Best investigated is the aggregation of platelets for primary hemostasis and their role as the surface for coagulation leading to fibrin- and clot-formation. Importantly, the function of platelets does not end with clot formation. Instead, platelets are responsible for clot retraction through the concerted action of the activated αIIbβ3 receptors on the surface of filopodia and the platelet's contractile apparatus binding and pulling at the fibrin strands. Meanwhile, the signal transduction events leading to clot retraction have been investigated thoroughly, and several targets to inhibit clot retraction have been demonstrated. Clot retraction is a physiologically important mechanism allowing: (1) the close contact of platelets in primary hemostasis, easing platelet aggregation and intercellular communication, (2) the reduction of wound size, (3) the compaction of red blood cells to a polyhedrocyte infection-barrier, and (4) reperfusion in case of thrombosis. Several methods have been developed to measure clot retraction that have been based on either the measurement of clot volume or platelet forces. Concerning the importance of clot retraction in inborn diseases, the failure of clot retraction in Glanzmann thrombasthenia is characterized by a bleeding phenotype. Concerning acquired diseases, altered clot retraction has been demonstrated in patients with coronary heart disease, stroke, bronchial asthma, uremia, lupus erythematodes, and other diseases. However, more studies on the diagnostic and prognostic value of clot retraction with methods that have to be standardized are necessary.
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Affiliation(s)
- Ellen E. Jansen
- Clinic for Operative Dentistry, Periodontology and Preventive Dentistry, RWTH Aachen University, 52074 Aachen, Germany;
| | - Matthias Hartmann
- Klinik für Anästhesiologie und Intensivmedizin, Universitätsklinikum Essen, Universität Duisburg-Essen, 45122 Essen, Germany
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7
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Karimi S, Mojaddam M, Majidi S, Mehrdel P, Farré-Lladós J, Casals-Terré J. Numerical and experimental analysis of a high-throughput blood plasma separator for point-of-care applications. Anal Bioanal Chem 2021; 413:2867-2878. [PMID: 33686478 DOI: 10.1007/s00216-021-03190-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 12/24/2020] [Accepted: 01/20/2021] [Indexed: 11/21/2022]
Abstract
Blood plasma separation from undiluted blood is an essential step in many diagnostic procedures. This study focuses on the numerical optimization of the microfluidic blood plasma separator (BPS) and experimental validation of the results to achieve portable blood plasma separation with high purity and reasonable yield. The proposed design has two parts: a microchannel for blood processing and a tank below the aforementioned main channel for plasma collection. The study uses 3D computational fluid dynamic analysis to investigate the optimal ratio of heights between the top microchannel and the tank and their geometry at various flow rates. Thereafter, the results are compared with the experimental findings of the fabricated devices. These results are contrasted with some recent reported works to verify the proposed device's contribution to the improvement in the quality and quantity of the extracted plasma. The optimized design is capable of achieving a 19% yield with purity of 77.1%, depending on the requirement of the point-of-care (POC) application. These amounts could be tuned, for instance to 100% pure plasma, but the yield would decrease to 9%. In this study, the candidate application is hemostasis; therefore, the BPS is integrated to a biomimetic surface for hemostasis evaluation near the patients.
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Affiliation(s)
- Shadi Karimi
- Mechanical Engineering Department, MicroTech Laboratory, Universitat Politècnica de Catalunya, 08222, Terrassa, Barcelona, Spain
| | - Mohammad Mojaddam
- Faculty of mechanical and energy engineering, Shahid Beheshti University, Tehran, 16765-1719, Iran
| | - Sahand Majidi
- Faculty of mechanical and energy engineering, Shahid Beheshti University, Tehran, 16765-1719, Iran
| | - Pouya Mehrdel
- Mechanical Engineering Department, MicroTech Laboratory, Universitat Politècnica de Catalunya, 08222, Terrassa, Barcelona, Spain
| | - Josep Farré-Lladós
- Mechanical Engineering Department, MicroTech Laboratory, Universitat Politècnica de Catalunya, 08222, Terrassa, Barcelona, Spain
| | - Jasmina Casals-Terré
- Mechanical Engineering Department, MicroTech Laboratory, Universitat Politècnica de Catalunya, 08222, Terrassa, Barcelona, Spain.
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8
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Huang L, Liu X, Ou Y, Huang H, Zhang X, Wang Y, Liang Y, Yu X, Zheng W, Zhang H, Li Z. Microengineered Flexural Post Rings for Effective Blood Sample Fencing and High-Throughput Measurement of Clot Retraction Force. ACS Sens 2020; 5:3949-3955. [PMID: 33197179 DOI: 10.1021/acssensors.0c01596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
During blood clotting, clot retraction alters its mechanical properties and critically affects hemostasis. Despite that, existing clot retraction assays hold limitations such as large footprint and low throughput. In this work, we report the design of flexural post rings for a miniaturized assay of clot retraction force (CRF) with high throughput. Leveraging surface tensions, the post rings hold blood samples in a highly reproducible fashion while simultaneously serving as cantilever beams to measure the CRF. We investigated the effect on the device performance of major parameters, namely, surface hydrophobicity, post number, and post stiffness. We then tested the devices using 14 patient samples and revealed the correlation between CRF and fibrinogen levels. We further implemented an automated liquid handler and developed a high-throughput platform for clot retraction assay. The device's small sample consumption, simple operation, and good compatibility with existing automation facilities make it a promising high-throughput clot retraction assay.
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Affiliation(s)
- Lanzhu Huang
- Department of Biomedical Engineering, School of Medicine, Shenzhen University, Shenzhen 518060, China
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, Department of Biomedical Engineering, School of Medicine, Shenzhen University, Shenzhen 518060, China
| | - Xinyu Liu
- Department of Biomedical Engineering, School of Medicine, Shenzhen University, Shenzhen 518060, China
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, Department of Biomedical Engineering, School of Medicine, Shenzhen University, Shenzhen 518060, China
- Faculty of Information Technology, Collaborative Laboratory for Intelligent Science and Systems and State Key Laboratory of Quality Research in Chinese Medicines, Macau University of Science and Technology, Macao 999078, China
| | - Yuanbin Ou
- Department of Biomedical Engineering, School of Medicine, Shenzhen University, Shenzhen 518060, China
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, Department of Biomedical Engineering, School of Medicine, Shenzhen University, Shenzhen 518060, China
| | - Haofan Huang
- Department of Biomedical Engineering, School of Medicine, Shenzhen University, Shenzhen 518060, China
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, Department of Biomedical Engineering, School of Medicine, Shenzhen University, Shenzhen 518060, China
| | - Xia Zhang
- Department of Laboratory Medicine, Shenzhen University General Hospital, Shenzhen 518055, China
| | - Yize Wang
- Department of Mechanical and Process Engineering, ETH Zurich, 8092 Zurich, Switzerland
| | - Yong Liang
- Faculty of Information Technology, Collaborative Laboratory for Intelligent Science and Systems and State Key Laboratory of Quality Research in Chinese Medicines, Macau University of Science and Technology, Macao 999078, China
| | - Xiaxia Yu
- Department of Biomedical Engineering, School of Medicine, Shenzhen University, Shenzhen 518060, China
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, Department of Biomedical Engineering, School of Medicine, Shenzhen University, Shenzhen 518060, China
| | - Weidong Zheng
- Department of Laboratory Medicine, Shenzhen University General Hospital, Shenzhen 518055, China
| | - Huisheng Zhang
- Department of Biomedical Engineering, School of Medicine, Shenzhen University, Shenzhen 518060, China
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, Department of Biomedical Engineering, School of Medicine, Shenzhen University, Shenzhen 518060, China
| | - Zida Li
- Department of Biomedical Engineering, School of Medicine, Shenzhen University, Shenzhen 518060, China
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, Department of Biomedical Engineering, School of Medicine, Shenzhen University, Shenzhen 518060, China
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9
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Windberger U, Dibiasi C, Lotz EM, Scharbert G, Reinbacher-Koestinger A, Ivanov I, Ploszczanski L, Antonova N, Lichtenegger H. The effect of hematocrit, fibrinogen concentration and temperature on the kinetics of clot formation of whole blood. Clin Hemorheol Microcirc 2020; 75:431-445. [PMID: 32390608 DOI: 10.3233/ch-190799] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
BACKGROUND Dynamic mechanical analysis of blood clots can be used to detect the coagulability of blood. OBJECTIVE We investigated the kinetics of clot formation by changing several blood components, and we looked into the clot "signature" at its equilibrium state by using viscoelastic and dielectric protocols. METHODS Oscillating shear rheometry, ROTEM, and a dielectro-rheological device was used. RESULTS In fibrinogen- spiked samples we found the classical high clotting ability: shortened onset, faster rate of clotting, and higher plateau stiffness. Electron microscopy explained the gain of stiffness. Incorporated RBCs weakened the clots. Reduction of temperature during the clotting process supported the development of high moduli by providing more time for fiber assembly. But at low HCT, clot firmness could be increased by elevating the temperature from 32 to 37°C. In contrast, when the fibrinogen concentration was modified, acceleration of clotting via temperature always reduced clot stiffness, whatever the initial fibrinogen concentration. Electrical resistance increased continuously during clotting; loss tangent (D) (relaxation frequency 249 kHz) decreased when clots became denser: fewer dipoles contributed to the relaxation process. The relaxation peak (Dmax) shifted to lower frequencies at higher platelet count. CONCLUSION Increasing temperature accelerates clot formation but weakens clots. Rheometry and ROTEM correlate well.
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Affiliation(s)
- U Windberger
- Center for Biomedical Research, Medical University Vienna, Vienna, Austria
| | - Ch Dibiasi
- Department of Anaesthesia, Intensive Care Medicine and Pain Medicine, Medical University of Vienna, Vienna, Austria
| | - E M Lotz
- Center for Biomedical Research, Medical University Vienna, Vienna, Austria
| | - G Scharbert
- Department of Anaesthesia, Intensive Care Medicine and Pain Medicine, Medical University of Vienna, Vienna, Austria
| | - A Reinbacher-Koestinger
- Institute of Fundamentals and Theory in Electrical Engineering, Graz University of Technology, Graz, Austria
| | - I Ivanov
- Institute of Mechanics, Bulgarian Academy of Science, Sofia, Bulgaria
| | - L Ploszczanski
- Department of Material Sciences and Process Engineering, Institute of Physics and Materials Science, University of Natural Resources and Life Sciences, Vienna, Austria
| | - N Antonova
- Institute of Mechanics, Bulgarian Academy of Science, Sofia, Bulgaria
| | - H Lichtenegger
- Department of Material Sciences and Process Engineering, Institute of Physics and Materials Science, University of Natural Resources and Life Sciences, Vienna, Austria
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10
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Chen X, Wang M, Zhao G. Point-of-Care Assessment of Hemostasis with a Love-Mode Surface Acoustic Wave Sensor. ACS Sens 2020; 5:282-291. [PMID: 31903758 DOI: 10.1021/acssensors.9b02382] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Monitoring of the hemostasis status is essential for therapeutic anticoagulants, undergoing surgery, cardiovascular diseases, etc. Although the clinical values of conventional blood coagulation tests have been well demonstrated, these devices have limitations such as large and expensive equipment, excessive sample volumes, long turnaround times, and difficulty in miniaturization for point-of-care use. Here, we present a novel strategy to evaluate blood hemostasis using the single-port Love-mode surface acoustic wave (SLSAW) sensor. The SLSAW sensor was designed as a plug-and-play-type unit for disposable use and operated under the harmonic resonant mode to produce frequency response to the blood coagulation cascade. Compared with a quartz crystal microbalance, Lamb wave, and film bulk acoustic resonator, the frequency shift of SLSAW was significantly increased, ranging from approximately 8960 to 10 368 kHz, which indicated enhancement of the signal-to-noise ratio. To demonstrate the feasibility of the SLSAW, studies were carried out to examine the effects of temperature and clotting reagents on coagulation times and kinetics. Activated partial thromboplastin times of plasma were validated by comparing with SYSMEX CA-7000 with the correlation (R2) as 0.996. In terms of coagulation kinetics, reaction time, clot formation time, maximum frequency shift, and clot formation rate of whole blood correlated well with corresponding parameters of the standard thromboelastography (TEG) analyzer (R2 = 0.9942, 0.9868, 0.9712, and 0.9939, respectively). The SLSAW sensor, with the advantages of low cost, small size, little sample consumption (1 μL), disposable use, and simple operation, is a promising tool for point-of-care diagnosis of hemostasis.
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Affiliation(s)
- Xi Chen
- Department of Electronic Science and Technology, University of Science and Technology of China, Hefei 230027, Anhui, China
| | - Meng Wang
- Department of Electronic Science and Technology, University of Science and Technology of China, Hefei 230027, Anhui, China
| | - Gang Zhao
- Department of Electronic Science and Technology, University of Science and Technology of China, Hefei 230027, Anhui, China
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11
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Chen Z, Memon K, Cao Y, Zhao G. A microfluidic approach for synchronous and nondestructive study of the permeability of multiple oocytes. MICROSYSTEMS & NANOENGINEERING 2020; 6:55. [PMID: 34567666 PMCID: PMC8433209 DOI: 10.1038/s41378-020-0160-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 03/23/2020] [Accepted: 03/30/2020] [Indexed: 05/11/2023]
Abstract
Investigation of oocyte membrane permeability plays a crucial role in fertility preservation, reproductive medicine, and reproductive pharmacology. However, the commonly used methods have disadvantages such as high time consumption, low efficiency, and cumbersome data processing. In addition, the developmental potential of oocytes after measurement has not been fully validated in previous studies. Moreover, oocytes can only maintain their best status in vitro within a very limited time. To address these limitations, we developed a novel multichannel microfluidic chip with newly designed micropillars that provide feasible and repeatable oocyte capture. The osmotic responses of three oocytes at different or the same cryoprotectant (CPA) concentrations were measured simultaneously, which greatly improved the measurement efficiency. Importantly, the CPA concentration dependence of mouse oocyte membrane permeability was found. Moreover, a neural network algorithm was employed to improve the efficiency and accuracy of data processing. Furthermore, analysis of fertilization and embryo transfer after perfusion indicated that the microfluidic approach does not damage the developmental potential of oocytes. In brief, we report a new method based on a multichannel microfluidic chip that enables synchronous and nondestructive measurement of the permeability of multiple oocytes.
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Affiliation(s)
- Zhongrong Chen
- Department of Electronic Science and Technology, University of Science and Technology of China, Hefei, 230027 China
| | - Kashan Memon
- Department of Electronic Science and Technology, University of Science and Technology of China, Hefei, 230027 China
| | - Yunxia Cao
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022 China
- Anhui Province Key Laboratory of Reproductive Health and Genetics, Anhui Provincial Engineering Technology Research Center for Biopreservation and Artificial Organs, Anhui Medical University, Hefei, 230022 China
| | - Gang Zhao
- Department of Electronic Science and Technology, University of Science and Technology of China, Hefei, 230027 China
- Anhui Province Key Laboratory of Reproductive Health and Genetics, Anhui Provincial Engineering Technology Research Center for Biopreservation and Artificial Organs, Anhui Medical University, Hefei, 230022 China
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12
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Kang YJ, Lee SJ. In vitro and ex vivo measurement of the biophysical properties of blood using microfluidic platforms and animal models. Analyst 2019; 143:2723-2749. [PMID: 29740642 DOI: 10.1039/c8an00231b] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Haemorheologically impaired microcirculation, such as blood clotting or abnormal blood flow, causes interrupted blood flows in vascular networks. The biophysical properties of blood, including blood viscosity, blood viscoelasticity, haematocrit, red blood bell (RBC) aggregation, erythrocyte sedimentation rate and RBC deformability, have been used to monitor haematological diseases. In this review, we summarise several techniques for measuring haemorheological properties, such as blood viscosity, RBC deformability and RBC aggregation, using in vitro microfluidic platforms. Several methodologies for the measurement of haemorheological properties with the assistance of an extracorporeal rat bypass loop are also presented. We briefly discuss several emerging technologies for continuous, long-term, multiple measurements of haemorheological properties under in vitro or ex vivo conditions.
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Affiliation(s)
- Yang Jun Kang
- Department of Mechanical Engineering, Chosun University, Gwangju, Republic of Korea
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Yousefian M, Shakour N, Hosseinzadeh H, Hayes AW, Hadizadeh F, Karimi G. The natural phenolic compounds as modulators of NADPH oxidases in hypertension. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2019; 55:200-213. [PMID: 30668430 DOI: 10.1016/j.phymed.2018.08.002] [Citation(s) in RCA: 97] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 07/04/2018] [Accepted: 08/05/2018] [Indexed: 06/09/2023]
Abstract
BACKGROUND Hypertension is a major public health problem worldwide. It is an important risk factor for other cardiovascular diseases such as coronary artery disease, stroke, heart failure, atrial fibrillation, peripheral vascular disease, chronic kidney disease, and atherosclerosis. PURPOSE There is strong evidence that excess ROS-derived NADPH oxidase (NOX) is an important agent in hypertension. It augments blood pressure in the presence of other pro-hypertensive factors such as angiotensin II (Ang II), an important and potent regulator of cardiovascular NADPH oxidase, activates NOX via AT1 receptors. NADPH oxidase, a multi-subunit complex enzyme, is considered as a key source of ROS production in the vasculature. The activation of this enzyme is needed for assembling Rac-1, p40phox, p47phox and p67phox subunits. Since, hypertensive patients need to control blood pressure for their entire life and because drugs and other chemicals often induce adverse effects, the use of natural phenolic compounds which are less toxic and potentially beneficial may be good avenues of addition research in our understand of the underlying mechanism involved in hypertension. This review focused on several natural phenolic compounds as berberine, thymoquinone, catechin, celastrol, apocynin, resveratrol, curcumin, hesperidine and G-hesperidine, and quercetin which are NOX inhibitors. In addition, structure activity relationship of these compounds eventually as the most inhibitors was discussed. METHODS This comprehensive review is based on pertinent papers by a selective search using relevant keywords that was collected using online search engines and databases such as ScienceDirect, Scopus and PubMed. The literature mainly focusing on natural products with therapeutic efficacies against hypertension via experimental models both in vitro and in vivo was identified. RESULTS It has been observed that these natural compounds prevent NADPH oxidase expression and ROS production while increasing NO bioavailability. It have been reported that they improve hypertension due to formation of a stable radical with ROS-derived NADPH oxidase and preventing the assembly of NOX subunites. CONCLUSION It is clear that natural phenolic compounds have some potential inhibitory effect on NADPH oxidase activity. In comparison to other phenolic plant compounds, the structural variability of the flavonoids should off different impacts on oxidative stress in hypertension including inhibition of nadph oxidase and direct scavenging of free radicals.
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Affiliation(s)
- Mozhdeh Yousefian
- Department of Medicinal Chemistry, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Neda Shakour
- Department of Medicinal Chemistry, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hossein Hosseinzadeh
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Pharmacodynamics and Toxicology, School Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - A Wallace Hayes
- University of South Florida College of Public Health, USA; Michigan State University, East Lansing, MI, USA
| | - Farzin Hadizadeh
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Gholamreza Karimi
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Pharmacodynamics and Toxicology, School Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
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Williams EK, Oshinowo O, Ravindran A, Lam WA, Myers DR. Feeling the Force: Measurements of Platelet Contraction and Their Diagnostic Implications. Semin Thromb Hemost 2018; 45:285-296. [PMID: 30566972 DOI: 10.1055/s-0038-1676315] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
In addition to the classical biological and biochemical framework, blood clots can also be considered as active biomaterials composed of dynamically contracting platelets, nascent polymeric fibrin that functions as a matrix scaffold, and entrapped blood cells. As platelets sense, rearrange, and apply forces to the surrounding microenvironment, they dramatically change the material properties of the nascent clot, increasing its stiffness by an order of magnitude. Hence, the mechanical properties of blood clots are intricately tied to the forces applied by individual platelets. Research has also shown that the pathophysiological changes in clot mechanical properties are associated with bleeding and clotting disorders, cancer, stroke, ischemic heart disease, and more. By approaching the study of hemostasis and thrombosis from a biophysical and mechanical perspective, important insights have been made into how the mechanics of clotting and the forces applied by platelets are linked to various diseases. This review will familiarize the reader with a mechanics framework that is contextualized with relevant biology. The review also includes a discussion of relevant tools used to study platelet forces either directly or indirectly, and finally, concludes with a summary of potential links between clotting forces and disease.
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Affiliation(s)
- Evelyn Kendall Williams
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia.,Division of Pediatric Hematology/Oncology, Department of Pediatrics, Aflac Cancer Center and Blood Disorders Service, Children's Healthcare of Atlanta, Emory University School of Medicine, Emory University, Atlanta, Georgia.,Winship Cancer Institute of Emory University, Emory University, Atlanta, Georgia.,Parker H. Petit Institute of Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia.,Institute for Electronics and Nanotechnology, Georgia Institute of Technology, Atlanta, Georgia
| | - Oluwamayokun Oshinowo
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia.,Division of Pediatric Hematology/Oncology, Department of Pediatrics, Aflac Cancer Center and Blood Disorders Service, Children's Healthcare of Atlanta, Emory University School of Medicine, Emory University, Atlanta, Georgia.,Winship Cancer Institute of Emory University, Emory University, Atlanta, Georgia.,Parker H. Petit Institute of Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia.,Institute for Electronics and Nanotechnology, Georgia Institute of Technology, Atlanta, Georgia
| | - Abhijit Ravindran
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia.,Division of Pediatric Hematology/Oncology, Department of Pediatrics, Aflac Cancer Center and Blood Disorders Service, Children's Healthcare of Atlanta, Emory University School of Medicine, Emory University, Atlanta, Georgia.,Winship Cancer Institute of Emory University, Emory University, Atlanta, Georgia.,Parker H. Petit Institute of Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia.,Institute for Electronics and Nanotechnology, Georgia Institute of Technology, Atlanta, Georgia
| | - Wilbur A Lam
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia.,Division of Pediatric Hematology/Oncology, Department of Pediatrics, Aflac Cancer Center and Blood Disorders Service, Children's Healthcare of Atlanta, Emory University School of Medicine, Emory University, Atlanta, Georgia.,Winship Cancer Institute of Emory University, Emory University, Atlanta, Georgia.,Parker H. Petit Institute of Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia.,Institute for Electronics and Nanotechnology, Georgia Institute of Technology, Atlanta, Georgia
| | - David R Myers
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia.,Division of Pediatric Hematology/Oncology, Department of Pediatrics, Aflac Cancer Center and Blood Disorders Service, Children's Healthcare of Atlanta, Emory University School of Medicine, Emory University, Atlanta, Georgia.,Winship Cancer Institute of Emory University, Emory University, Atlanta, Georgia.,Parker H. Petit Institute of Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia.,Institute for Electronics and Nanotechnology, Georgia Institute of Technology, Atlanta, Georgia
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15
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Ho KKY, Wang YL, Wu J, Liu AP. Advanced Microfluidic Device Designed for Cyclic Compression of Single Adherent Cells. Front Bioeng Biotechnol 2018; 6:148. [PMID: 30386779 PMCID: PMC6198036 DOI: 10.3389/fbioe.2018.00148] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 09/26/2018] [Indexed: 12/13/2022] Open
Abstract
Cells in our body experience different types of stress including compression, tension, and shear. It has been shown that some cells experience permanent plastic deformation after a mechanical tensile load was removed. However, it was unclear whether cells are plastically deformed after repetitive compressive loading and unloading. There have been few tools available to exert cyclic compression at the single cell level. To address technical challenges found in a previous microfluidic compression device, we developed a new single-cell microfluidic compression device that combines an elastomeric membrane block geometry to ensure a flat contact surface and microcontact printing to confine cell spreading within cell trapping chambers. The design of the block geometry inside the compression chamber was optimized by using computational simulations. Additionally, we have implemented step-wise pneumatically controlled cell trapping to allow more compression chambers to be incorporated while minimizing mechanical perturbation on trapped cells. Using breast epithelial MCF10A cells stably expressing a fluorescent actin marker, we successfully demonstrated the new device design by separately trapping single cells in different chambers, confining cell spreading on microcontact printed islands, and applying cyclic planar compression onto single cells. We found that there is no permanent deformation after a 0.5 Hz cyclic compressive load for 6 min was removed. Overall, the development of the single-cell compression microfluidic device opens up new opportunities in mechanobiology and cell mechanics studies.
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Affiliation(s)
- Kenneth K. Y. Ho
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI, United States
| | - Ying Lin Wang
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI, United States
| | - Jing Wu
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI, United States
- Department of Mechanical Engineering, University of Hong Kong, Hong Kong, China
| | - Allen P. Liu
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI, United States
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, United States
- Cellular and Molecular Biology Program, University of Michigan, Ann Arbor, MI, United States
- Biophysics Program, University of Michigan, Ann Arbor, MI, United States
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16
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Li Z, Wang Y, Xue X, McCracken B, Ward K, Fu J. Carbon Nanotube Strain Sensor Based Hemoretractometer for Blood Coagulation Testing. ACS Sens 2018; 3:670-676. [PMID: 29485284 PMCID: PMC6223013 DOI: 10.1021/acssensors.7b00971] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Coagulation monitoring is essential for perioperative care and thrombosis treatment. However, existing assays for coagulation monitoring have limitations such as a large footprint and complex setup. In this work, we developed a miniaturized device for point-of-care blood coagulation testing by measuring dynamic clot retraction force development during blood clotting. In this device, a blood drop was localized between a protrusion and a flexible force-sensing beam to measure clot retraction force. The beam was featured with micropillar arrays to assist the deposition of carbon nanotube films, which served as a strain sensor to achieve label-free electrical readout of clot retraction force in real time. We characterized mechanical and electrical properties of the force-sensing beam and optimized its design. We further demonstrated that this blood coagulation monitoring device could obtain results that were consistent with those using an imaging method and that the device was capable of differentiating blood samples with different coagulation profiles. Owing to its low fabrication cost, small size, and low consumption of blood samples, the blood coagulation testing device using carbon nanotube strain sensors holds great potential as a point-of-care tool for future coagulation monitoring.
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Affiliation(s)
- Zida Li
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - Yize Wang
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - Xufeng Xue
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - Brendan McCracken
- Department of Emergency Medicine, University of Michigan Medical School, Ann Arbor, Michigan 48109, USA
- Michigan Center for Integrative Research in Critical Care, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - Kevin Ward
- Department of Emergency Medicine, University of Michigan Medical School, Ann Arbor, Michigan 48109, USA
- Michigan Center for Integrative Research in Critical Care, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - Jianping Fu
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan 48109, USA
- Michigan Center for Integrative Research in Critical Care, University of Michigan, Ann Arbor, Michigan 48109, USA
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan 48109, USA
- Department of Cell and Developmental Biology, University of Michigan Medical School, Ann Arbor, Michigan 48109, USA
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Li Z, Xue X, Lin F, Wang Y, Ward K, Fu J. Capillary assisted deposition of carbon nanotube film for strain sensing. APPLIED PHYSICS LETTERS 2017; 111:173105. [PMID: 30405247 PMCID: PMC6207349 DOI: 10.1063/1.5001754] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2017] [Accepted: 10/16/2017] [Indexed: 06/08/2023]
Abstract
Advances in stretchable electronics offer the possibility of developing skin-like motion sensors. Carbon nanotubes (CNTs), owing to their superior electrical properties, have great potential for applications in such sensors. In this paper, we report a method for deposition and patterning of CNTs on soft, elastic polydimethylsiloxane (PDMS) substrates using capillary action. Micropillar arrays were generated on PDMS surfaces before treatment with plasma to render them hydrophilic. Capillary force enabled by the micropillar array spreads CNT solution evenly on PDMS surfaces. Solvent evaporation leaves a uniform deposition and patterning of CNTs on PDMS surfaces. We studied the effect of the CNT concentration and micropillar gap size on CNT coating uniformity, film conductivity, and piezoresistivity. Leveraging the piezoresistivity of deposited CNT films, we further designed and characterized a device for the contraction force measurement. Our capillary assisted deposition method of CNT films showed great application potential in fabrication of flexible CNT thin films for strain sensing.
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Affiliation(s)
- Zida Li
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - Xufeng Xue
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - Feng Lin
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - Yize Wang
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan 48109, USA
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Preventive Effects of Catechins on Cardiovascular Disease. Molecules 2016; 21:molecules21121759. [PMID: 28009849 PMCID: PMC6273873 DOI: 10.3390/molecules21121759] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Revised: 12/12/2016] [Accepted: 12/14/2016] [Indexed: 01/18/2023] Open
Abstract
Catechins are polyphenolic phytochemicals with many important physiological activities that play a multifaceted health care function in the human body, especially in the prevention of cardiovascular disease. In this paper, various experimental and clinical studies have revealed the role of catechins in the prevention and treatment of cardiovascular disorders, and we review the preventive effects of catechins on cardiovascular disease from the following aspects: Regulating lipid metabolism, regulating blood lipid metabolism, vascular endothelial protection, and reducing blood pressure.
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