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Zeng Q, Gouchoe DA, Nabavinia M, Lee YG, Wang X, Shaffer TA, Stacy MR, Peterson BR, Whitson BA, Breuer C, Black SM. Successful Orthotopic Liver Transplantation in Mice Utilizing Microcomputed Tomography Angiography. J Vis Exp 2023. [PMID: 37811930 DOI: 10.3791/65537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2023] Open
Abstract
Microcomputed tomography (microCT) angiography is an invaluable resource to researchers. New advances in this technology have allowed for high-quality images to be obtained of micro-vasculature and are high-fidelity tools in the field of organ transplantation. In this model of orthotopic liver transplantation (OLT) in mice, microCT affords the opportunity to evaluate allograft anastomosis in real time and has the added benefit of not having to sacrifice study animals. The choice of contrast, as well as image acquisition settings, create a high-definition image, which gives researchers invaluable information. This allows for evaluation of the technical aspects of the procedure as well as potentially evaluating different therapeutics over an extended duration of time. In this protocol, we detail an OLT model in mice in a stepwise fashion and finally describe a microCT protocol that can give high-quality images, which aid researchers in in-depth analysis of solid organ transplantation. We provide a step-by-step guide for liver transplantation in a mouse, as well as briefly discuss a protocol for evaluating the patency of the graft through microCT angiography.
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Affiliation(s)
- Qiang Zeng
- Department of Surgery, Nationwide Children's Hospital
| | - Doug A Gouchoe
- COPPER Laboratory, The Ohio State University; 88th Surgical Operation Operations Squadron, WPAFB
| | - Mahboubeh Nabavinia
- Center for Regenerative Medicine, The Research Institute at Nationwide Children's Hospital
| | | | - Xi Wang
- COPPER Laboratory, The Ohio State University
| | - Terri A Shaffer
- Division of Vascular Diseases and Surgery, The Ohio State University College of Medicine
| | - Mitchel R Stacy
- Center for Regenerative Medicine, The Research Institute at Nationwide Children's Hospital; Division of Vascular Diseases and Surgery, The Ohio State University College of Medicine; Interdisciplinary Biophysics Graduate Program, The Ohio State University
| | - Blake R Peterson
- Division of Medicinal Chemistry and Pharmacognosy, The Ohio State University College of Pharmacy; The Ohio State University Comprehensive Cancer Center
| | - Bryan A Whitson
- COPPER Laboratory, The Ohio State University; Division of Cardiac Surgery, Department of Surgery, The Ohio State Wexner Medical Center
| | - Christopher Breuer
- Department of Surgery, Nationwide Children's Hospital; Center for Regenerative Medicine, The Research Institute at Nationwide Children's Hospital
| | - Sylvester M Black
- Department of Surgery, Nationwide Children's Hospital; Division of Transplantation, Department of Surgery, The Ohio State Wexner Medical Center;
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Trittmann JK, Almazroue H, Nelin LD, Shaffer TA, Celestine CR, Green HW, Malbrue RA. PATET ratio by Doppler echocardiography: noninvasive detection of pediatric pulmonary arterial hypertension. Pediatr Res 2022; 92:631-636. [PMID: 34795389 PMCID: PMC9114166 DOI: 10.1038/s41390-021-01840-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 10/09/2021] [Accepted: 10/28/2021] [Indexed: 11/12/2022]
Abstract
Pulmonary artery acceleration time (PAT) and PAT: ejection time (PATET) ratio are echocardiographic measurements of pulmonary arterial hypertension (PAH). These noninvasive quantitative measurements are ideal to follow longitudinally through the clinical course of PAH, especially as it relates to the need for and/or response to treatment. This review article focuses on the current literature of PATET measurement for infants and children as it relates to the shortening of the PATET ratio in PAH. At the same time, further development of PATET as an outcome measure for PAH in preclinical models, particularly mice, such that the field can move forward to human clinical studies that are both safe and effective. Here, we present what is known about PATET in infants and children and discuss what is known in preclinical models with particular emphasis on neonatal mouse models. In both animal models and human disease, PATET allows for longitudinal measurements in the same individual, leading to more precise determinations of disease/model progression and/or response to therapy. IMPACT: PATET ratio is a quantitative measurement by a noninvasive technique, Doppler echocardiography, providing clinicians a more precise/accurate, safe, and longitudinal assessment of pediatric PAH. We present a brief history/state of the art of PATET ratio to predict PAH in adults, children, infants, and fetuses, as well as in small animal models of PAH. In a preliminary study, PATET shortened by 18% during acute hypoxic exposure compared to pre-hypoxia. Studies are needed to establish PATET, especially in mouse models of disease, such as bronchopulmonary, as a routine measure of PAH.
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Affiliation(s)
- Jennifer K. Trittmann
- Center for Perinatal Research, Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, OH,Department of Pediatrics, The Ohio State University, College of Medicine, Columbus, OH,Jennifer K. Trittmann, MD, MPH, Center for Perinatal Research, Abigail Wexner Research Institute at, Nationwide Children’s Hospital and, The Ohio State University, College of Medicine, Columbus, OH, USA,
| | - Hanadi Almazroue
- Center for Perinatal Research, Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, OH
| | - Leif D. Nelin
- Center for Perinatal Research, Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, OH,Department of Pediatrics, The Ohio State University, College of Medicine, Columbus, OH
| | - Terri A. Shaffer
- Animal Resources Core, Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, OH
| | - Charanda R. Celestine
- Louisiana State University, School of Veterinary Medicine, Department of Veterinary Clinical Sciences, Baton Rouge, LA, USA
| | - Henry W. Green
- Louisiana State University, School of Veterinary Medicine, Department of Veterinary Clinical Sciences, Baton Rouge, LA, USA
| | - Raphael A. Malbrue
- Animal Resources Core, Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, OH,The Ohio State University, College of Veterinary Medicine, Columbus, OH
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Studebaker AW, Hutzen B, Pierson CR, Shaffer TA, Raffel C, Jackson EM. Oncolytic measles virus efficacy in murine xenograft models of atypical teratoid rhabdoid tumors. Neuro Oncol 2015; 17:1568-77. [PMID: 25838138 DOI: 10.1093/neuonc/nov058] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2014] [Accepted: 03/11/2015] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND Atypical teratoid rhabdoid tumor (AT/RT) is a rare, highly malignant pediatric tumor of the central nervous system that is usually refractory to available treatments. The aggressive growth, propensity to disseminate along the neuroaxis, and young age at diagnosis contribute to the poor prognosis. Previous studies have demonstrated the efficacy of using oncolytic measles virus (MV) against localized and disseminated models of medulloblastoma. The purpose of this study was to evaluate the oncolytic potential of MV in experimental models of AT/RT. METHODS Following confirmation of susceptibility to MV infection and killing of AT/RT cells in vitro, nude mice were injected with BT-12 and BT-16 AT/RT cells stereotactically into the caudate nucleus (primary tumor model) or lateral ventricle (disseminated tumor model). Recombinant MV was administered either intratumorally or intravenously. Survival was determined for treated and control animals. Necropsy was performed on animals showing signs of progressive disease. RESULTS All cell lines exhibited significant killing when infected with MV, all formed syncytia with infection, and all generated infectious virus after infection. Orthotopic xenografts displayed cells with rhabdoid-like cellular morphology, were negative for INI1 expression, and showed dissemination within the intracranial and spinal subarachnoid spaces. Intratumoral injection of live MV significantly prolonged the survival of animals with intracranial and metastatic tumors. CONCLUSION These data demonstrate that AT/RT is susceptible to MV killing and suggest that the virus may have a role in treating this tumor in the clinical setting.
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Affiliation(s)
- Adam W Studebaker
- Center for Childhood Cancer and Blood Diseases, Research Institute at Nationwide Children's Hospital, Columbus, Ohio (A.W.S., B.H.); Nationwide Children's Hospital Department of Pathology and Laboratory Medicine and Departments of Pathology and Anatomy, The Ohio State University College of Medicine, Columbus, Ohio (C.R.P.); Animal Resources Core, Research Institute at Nationwide Children's Hospital, Columbus, Ohio (T.A.S.); Department of Neurological Surgery and Pediatrics, University of California, San Francisco, California (C.R.); Department of Neurosurgery, Johns Hopkins University, Baltimore, Maryland (E.M.J.)
| | - Brian Hutzen
- Center for Childhood Cancer and Blood Diseases, Research Institute at Nationwide Children's Hospital, Columbus, Ohio (A.W.S., B.H.); Nationwide Children's Hospital Department of Pathology and Laboratory Medicine and Departments of Pathology and Anatomy, The Ohio State University College of Medicine, Columbus, Ohio (C.R.P.); Animal Resources Core, Research Institute at Nationwide Children's Hospital, Columbus, Ohio (T.A.S.); Department of Neurological Surgery and Pediatrics, University of California, San Francisco, California (C.R.); Department of Neurosurgery, Johns Hopkins University, Baltimore, Maryland (E.M.J.)
| | - Christopher R Pierson
- Center for Childhood Cancer and Blood Diseases, Research Institute at Nationwide Children's Hospital, Columbus, Ohio (A.W.S., B.H.); Nationwide Children's Hospital Department of Pathology and Laboratory Medicine and Departments of Pathology and Anatomy, The Ohio State University College of Medicine, Columbus, Ohio (C.R.P.); Animal Resources Core, Research Institute at Nationwide Children's Hospital, Columbus, Ohio (T.A.S.); Department of Neurological Surgery and Pediatrics, University of California, San Francisco, California (C.R.); Department of Neurosurgery, Johns Hopkins University, Baltimore, Maryland (E.M.J.)
| | - Terri A Shaffer
- Center for Childhood Cancer and Blood Diseases, Research Institute at Nationwide Children's Hospital, Columbus, Ohio (A.W.S., B.H.); Nationwide Children's Hospital Department of Pathology and Laboratory Medicine and Departments of Pathology and Anatomy, The Ohio State University College of Medicine, Columbus, Ohio (C.R.P.); Animal Resources Core, Research Institute at Nationwide Children's Hospital, Columbus, Ohio (T.A.S.); Department of Neurological Surgery and Pediatrics, University of California, San Francisco, California (C.R.); Department of Neurosurgery, Johns Hopkins University, Baltimore, Maryland (E.M.J.)
| | - Corey Raffel
- Center for Childhood Cancer and Blood Diseases, Research Institute at Nationwide Children's Hospital, Columbus, Ohio (A.W.S., B.H.); Nationwide Children's Hospital Department of Pathology and Laboratory Medicine and Departments of Pathology and Anatomy, The Ohio State University College of Medicine, Columbus, Ohio (C.R.P.); Animal Resources Core, Research Institute at Nationwide Children's Hospital, Columbus, Ohio (T.A.S.); Department of Neurological Surgery and Pediatrics, University of California, San Francisco, California (C.R.); Department of Neurosurgery, Johns Hopkins University, Baltimore, Maryland (E.M.J.)
| | - Eric M Jackson
- Center for Childhood Cancer and Blood Diseases, Research Institute at Nationwide Children's Hospital, Columbus, Ohio (A.W.S., B.H.); Nationwide Children's Hospital Department of Pathology and Laboratory Medicine and Departments of Pathology and Anatomy, The Ohio State University College of Medicine, Columbus, Ohio (C.R.P.); Animal Resources Core, Research Institute at Nationwide Children's Hospital, Columbus, Ohio (T.A.S.); Department of Neurological Surgery and Pediatrics, University of California, San Francisco, California (C.R.); Department of Neurosurgery, Johns Hopkins University, Baltimore, Maryland (E.M.J.)
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