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Chee E, Mihalko E, Nellenbach K, Sollinger J, Huang K, Hon M, Pandit S, Cheng K, Brown A. Wound-triggered shape change microgels for the development of enhanced biomimetic function platelet-like particles. J Biomed Mater Res A 2024; 112:613-624. [PMID: 37846887 DOI: 10.1002/jbm.a.37625] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 09/14/2023] [Accepted: 10/03/2023] [Indexed: 10/18/2023]
Abstract
Platelets play a pivotal role in hemostasis and wound healing and conditional shape change is an important component of platelet functionality. In normal circumstances, platelets travel through the circulatory system in an inactive rounded state, which enables platelets to easily move to vessel walls for attachment. When an injury occurs, platelets are prompted by molecules, such as thrombin, to shift into a stellate shape and increase exposure of fibrin-binding receptors. When active, platelets promote hemostasis and clot retraction, which enhances clot stability and promotes healing. However, in conditions where platelets are depleted or hyporeactive, these functions are diminished and lead to inhibited hemostasis and healing. To treat platelet depletion, our group developed platelet-like particles (PLPs) which consist of highly deformable microgels coupled to fibrin binding motif. However, first generation PLPs do not exhibit wound-triggered shape change like native platelets. Thus, the objective of these studies was to develop a PLP formulation that changes shape when prompted by thrombin. To create thrombin-sensitive PLPs (TS-PLPs), we incorporated a thrombin-cleavable peptide into the microgel body and then evaluated PLP properties before and after exposure to thrombin including morphology, size, and in vitro clot retraction. Once thrombin-prompted shape change ability was confirmed, the TS-PLPs were tested in vivo for hemostatic ability and subsequent wound healing outcomes in a murine liver trauma model. We found that TS-PLPs exhibit a wound-triggered shape change, induce significant clot retraction following exposure to thrombin and promote hemostasis and healing in vivo after trauma.
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Affiliation(s)
- Eunice Chee
- Joint Department of Biomedical Engineering, North Carolina State University and University of North Carolina-Chapel Hill, Raleigh, North Carolina, USA
- Comparative Medicine Institute, North Carolina State University, Raleigh, North Carolina, USA
| | - Emily Mihalko
- Trauma and Transfusion Medicine Research Center, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Kimberly Nellenbach
- Joint Department of Biomedical Engineering, North Carolina State University and University of North Carolina-Chapel Hill, Raleigh, North Carolina, USA
- Comparative Medicine Institute, North Carolina State University, Raleigh, North Carolina, USA
| | - Jennifer Sollinger
- Joint Department of Biomedical Engineering, North Carolina State University and University of North Carolina-Chapel Hill, Raleigh, North Carolina, USA
| | - Ke Huang
- Department of Molecular Biomedical Sciences, North Carolina State University, Raleigh, North Carolina, USA
| | - Mason Hon
- Joint Department of Biomedical Engineering, North Carolina State University and University of North Carolina-Chapel Hill, Raleigh, North Carolina, USA
| | - Sanika Pandit
- Joint Department of Biomedical Engineering, North Carolina State University and University of North Carolina-Chapel Hill, Raleigh, North Carolina, USA
- Comparative Medicine Institute, North Carolina State University, Raleigh, North Carolina, USA
| | - Ke Cheng
- Department of Molecular Biomedical Sciences, North Carolina State University, Raleigh, North Carolina, USA
| | - Ashley Brown
- Joint Department of Biomedical Engineering, North Carolina State University and University of North Carolina-Chapel Hill, Raleigh, North Carolina, USA
- Comparative Medicine Institute, North Carolina State University, Raleigh, North Carolina, USA
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Park A, Kanowski A, Danda N, Hon M, Thakeria P. 498 Impact of Accelerated Chest Pain Risk Evaluation (ACRE) Pathway on Exercise Stress Test Referrals at the Townsville University Hospital. Heart Lung Circ 2020. [DOI: 10.1016/j.hlc.2020.09.505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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3
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Hoffmann J, Fadl A, Flug J, Baadh A, Hon M, Georgiou N. Implementation of a Standard Interventional Radiology Signout as a Communication Quality Improvement Initiative. J Vasc Interv Radiol 2015. [DOI: 10.1016/j.jvir.2014.10.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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5
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Ganson G, Hon M, Haas J, Katz A, Witten M, Ortiz A. Abstract No. 256: Initial experience with CT guided lung fiducial placement for subsequent Cyberknife stereotactic radiosurgery. J Vasc Interv Radiol 2010. [DOI: 10.1016/j.jvir.2009.12.042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Shi Y, Downes M, Xie W, Kao HY, Ordentlich P, Tsai CC, Hon M, Evans RM. Sharp, an inducible cofactor that integrates nuclear receptor repression and activation. Genes Dev 2001; 15:1140-51. [PMID: 11331609 PMCID: PMC312688 DOI: 10.1101/gad.871201] [Citation(s) in RCA: 257] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2000] [Accepted: 03/01/2001] [Indexed: 11/25/2022]
Abstract
A yeast two-hybrid screen using the conserved carboxyl terminus of the nuclear receptor corepressor SMRT as a bait led to the isolation of a novel human gene termed SHARP (SMRT/HDAC1 Associated Repressor Protein). SHARP is a potent transcriptional repressor whose repression domain (RD) interacts directly with SMRT and at least five members of the NuRD complex including HDAC1 and HDAC2. In addition, SHARP binds to the steroid receptor RNA coactivator SRA via an intrinsic RNA binding domain and suppresses SRA-potentiated steroid receptor transcription activity. Accordingly, SHARP has the capacity to modulate both liganded and nonliganded nuclear receptors. Surprisingly, the expression of SHARP is itself steroid inducible, suggesting a simple feedback mechanism for attenuation of the hormonal response.
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Affiliation(s)
- Y Shi
- Howard Hughes Medical Institute, The Salk Institute for Biological Studies, Gene Expression Laboratory, La Jolla, California 92037, USA
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Scheer M, Hon M, Fruauff AA, Blumenfeld W, Grossman ZD, Katz DS. Perinephric xanthogranulomatosis: CT diagnosis and confirmation by CT-guided percutaneous biopsy. Clin Imaging 2000; 24:64-7. [PMID: 11124472 DOI: 10.1016/s0899-7071(00)00171-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Xanthogranulomatosis is an idiopathic, rare process in which lipid-laden histiocytes may deposit in various locations in the body, which if systemic is called Erdheim-Chester disease. A rare case of isolated retroperitoneal, bilateral perinephric xanthogranulomatosis is reported. The diagnosis was suspected on cross-sectional imaging and was confirmed by CT-guided percutaneous core biopsy.
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Affiliation(s)
- M Scheer
- Department of Radiology, Winthrop-University Hospital, 259 First Street, Mineola, NY 11501, USA
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Abstract
Splenic vein aneurysms are rare and are usually caused by portal hypertension. Symptoms are unusual, but may include rupture or abdominal pain. Diagnosis can usually be made either by means of duplex ultrasonography or computed tomography scanning. Treatment varies from noninvasive follow-up to aneurysm excision. We report an expanding splenic vein aneurysm in a young woman with abdominal and back pain and no history of portal hypertension. She was treated with aneurysm excision and splenectomy.
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Affiliation(s)
- G Torres
- Division of Vascular Surgery, Winthrop-University Hospital, Mineola, NY, USA
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Kurotobi T, Koretsunel Y, Sato H, Sato H, Ohnishi Y, Kuzuya T, Hon M, Matsuda H. Thrombomodulin expression on atrial endocardium in patients with atrial fibrillation. J Am Coll Cardiol 1998. [DOI: 10.1016/s0735-1097(98)81954-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Sakata Y, Kodama K, Hirayama A, Lim Y, Kitakaza M, Hon M. Alternation in collateral flow dynamics as a determinant of stress-induced myocardial ischemia in humans. J Am Coll Cardiol 1998. [DOI: 10.1016/s0735-1097(98)82244-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Abstract
Cytologic detection of lung cancer is accepted, accurate, and time-honored. Typically, cytologic workup of a radiologic abnormality proceeds sequentially from sputum to bronchoalveolar cytology, and, if necessary, to fine-needle aspiration biopsy (FNA). Initial use of FNA in lung cancer diagnosis is controversial, but increasingly popular. We therefore decided to objectively assess current practice in cytologic lung cancer diagnosis at our institution. All pulmonary cytologic diagnoses for 1993 and the first half of 1994 were retrieved. Positive diagnoses were then used to access all patient data. Patients were stratified according to the specimen from which the first positive diagnosis was obtained. Of 542 pulmonary cytology specimens, 15% were sputa, 65% were bronchoalveolar, and 20% were FNAs. One hundred sixty-one of 172 malignant diagnoses were first diagnoses. Three percent of first malignant diagnoses were made from sputa, 47% were from lavages, and 50% were from FNAs. Although FNAs comprised just 20% of all pulmonary cytologies, 50% of all new malignant cytologic diagnoses were made by FNA. Initial use of FNA is successful, has a high diagnostic yield and low complication rate, and offers the most direct approach to diagnosis.
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Affiliation(s)
- W Blumenfeld
- Department of Pathology, Winthrop-University Hospital, Mineola, NY 11501, USA
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