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Fryer C, Murray P, Zhang H. Modification of nanodiamonds for fluorescence bioimaging. RSC Adv 2024; 14:4633-4644. [PMID: 38318624 PMCID: PMC10839752 DOI: 10.1039/d3ra08762j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Accepted: 01/29/2024] [Indexed: 02/07/2024] Open
Abstract
Non-invasive bioimaging is essential in enhancing pre-clinical diagnosis and therapy. Developing efficient imaging probes with high stability, low toxicity, and the potential of offering high resolution images is a very important aspect of developing non-invasive bioimaging techniques. Fluorescent nanodiamonds, which are produced by high energy beam irradiation and high temperature/pressure treatment, have been extensively investigated. In this study, we report the chemical modification of common nanodiamonds (prepared by detonation and high-pressure high-temperature milling) using a stable fluorophore (perylene diimide derivative) via carbodiimide coupling. The resulting nanodiamonds show good biocompatibility, cellular uptake and fluorescent imaging potential with mesenchymal stromal cells. This method provides an efficient alternative approach to the preparation and the use of fluorescent nanodiamonds for bioimaging, with the potential benefit of chemically adjusting the structure of perylene diimide for optimized emission/absorbance wavelength.
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Affiliation(s)
- Claudia Fryer
- Department of Chemistry, University of Liverpool Liverpool L69 7ZD UK
- Department of Women's and Children's Health, Institute of Life Course and Medical Sciences, University of Liverpool Liverpool L69 3GE UK
| | - Patricia Murray
- Department of Women's and Children's Health, Institute of Life Course and Medical Sciences, University of Liverpool Liverpool L69 3GE UK
| | - Haifei Zhang
- Department of Chemistry, University of Liverpool Liverpool L69 7ZD UK
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2
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da Silva TB, Rendra E, David CAW, Bieback K, Cross MJ, Wilm B, Liptrott NJ, Murray P. Umbilical cord mesenchymal stromal cell-derived extracellular vesicles lack the potency to immunomodulate human monocyte-derived macrophages in vitro. Biomed Pharmacother 2023; 167:115624. [PMID: 37783151 DOI: 10.1016/j.biopha.2023.115624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Revised: 09/26/2023] [Accepted: 09/28/2023] [Indexed: 10/04/2023] Open
Abstract
Mesenchymal stromal cells (MSCs) have been reported to display efficacy in a variety of preclinical models, but without long-term engraftment, suggesting a role for secreted factors, such as MSC-derived extracellular vesicles (EVs). MSCs are known to elicit immunomodulatory effects, an important aspect of which is their ability to affect macrophage phenotype. However, it is not clear if these effects are mediated by MSC-derived EVs, or other factors secreted by the MSCs. Here, we use flow cytometry to assess the effects of human umbilical cord (hUC) MSC-derived EVs on the expression of pro-inflammatory (CD80) and anti-inflammatory (CD163) surface markers in human monocyte-derived macrophages (hMDMs). hUC-MSC-derived EVs did not change the surface marker expression of the hMDMs. In contrast, when hMDMs were co-incubated with hUC-MSCs in indirect co-cultures, changes were observed in the expression of CD14, CD80 and CD163, particularly in M1 macrophages, suggesting that soluble factors are necessary to elicit a shift in phenotype. However, even though EVs did not alter the surface marker expression of macrophages, they promoted angiogenesis and phagocytic capacity increased proportionally to increases in EV concentration. Taken together, these results suggest that hUC-MSC-derived EVs are not sufficient to alter macrophage phenotype and that additional MSC-derived factors are needed.
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Affiliation(s)
- Tamiris Borges da Silva
- Department of Molecular Physiology and Cell Signalling, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Crown Street, L69 3GE Liverpool, UK
| | - Erika Rendra
- Institute of Transfusion Medicine and Immunology, Mannheim Institute of Innate Immunoscience, Medical Faculty Mannheim, Heidelberg University, Mannheim 68167, Germany
| | - Christopher A W David
- Immunocompatibility Group, Department of Pharmacology and Therapeutics, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, UK
| | - Karen Bieback
- Institute of Transfusion Medicine and Immunology, Mannheim Institute of Innate Immunoscience, Medical Faculty Mannheim, Heidelberg University, Mannheim 68167, Germany; Mannheim Institute for Innate Immunoscience, Medical Faculty Mannheim, Heidelberg University, Germany
| | - Michael J Cross
- Department of Pharmacology and Therapeutics, University of Liverpool, Liverpool L69 3GL, UK
| | - Bettina Wilm
- Department of Molecular Physiology and Cell Signalling, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Crown Street, L69 3GE Liverpool, UK
| | - Neill J Liptrott
- Immunocompatibility Group, Department of Pharmacology and Therapeutics, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, UK
| | - Patricia Murray
- Department of Molecular Physiology and Cell Signalling, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Crown Street, L69 3GE Liverpool, UK.
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Muñiz-García A, Pichardo AH, Littlewood J, Tasker S, Sharkey J, Wilm B, Peace H, O'Callaghan D, Green M, Taylor A, Murray P. Near infrared conjugated polymer nanoparticles (CPN™) for tracking cells using fluorescence and optoacoustic imaging. Nanoscale Adv 2023; 5:5520-5528. [PMID: 37822909 PMCID: PMC10563848 DOI: 10.1039/d3na00546a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Accepted: 09/10/2023] [Indexed: 10/13/2023]
Abstract
Tracking the biodistribution of cell therapies is crucial for understanding their safety and efficacy. Optical imaging techniques are particularly useful for tracking cells due to their clinical translatability and potential for intra-operative use to validate cell delivery. However, there is a lack of appropriate optical probes for cell tracking. The only FDA-approved material for clinical use is indocyanine green (ICG). ICG can be used for both fluorescence and photoacoustic imaging, but is prone to photodegradation, and at higher concentrations, undergoes quenching and can adversely affect cell health. We have developed novel near-infrared imaging probes comprising conjugated polymer nanoparticles (CPNs™) that can be fine-tuned to absorb and emit light at specific wavelengths. To compare the performance of the CPNs™ with ICG for in vivo cell tracking, labelled mesenchymal stromal cells (MSCs) were injected subcutaneously in mice and detected using fluorescence imaging (FI) and a form of photoacoustic imaging called multispectral optoacoustic tomography (MSOT). MSCs labelled with either ICG or CPN™ 770 could be detected with FI, but only CPN™ 770-labelled MSCs could be detected with MSOT. These results show that CPNs™ show great promise for tracking cells in vivo using optical imaging techniques, and for some applications, out-perform ICG.
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Affiliation(s)
- Ana Muñiz-García
- Department of Molecular Physiology and Cell Signalling, Institute of Systems, Molecular and Integrative Biology, University of Liverpool Liverpool UK
- Centre for Genomics and Child Health, Blizard Institute, Faculty of Medicine and Dentistry, Queen Mary University of London London UK
| | - Alejandra Hernandez Pichardo
- Department of Molecular Physiology and Cell Signalling, Institute of Systems, Molecular and Integrative Biology, University of Liverpool Liverpool UK
- Centre for Pre-clinical Imaging, University of Liverpool Liverpool UK
| | - James Littlewood
- Centre for Pre-clinical Imaging, University of Liverpool Liverpool UK
- iThera Medical GmbH Munich Germany
| | - Suzannah Tasker
- Department of Molecular Physiology and Cell Signalling, Institute of Systems, Molecular and Integrative Biology, University of Liverpool Liverpool UK
| | | | - Bettina Wilm
- Department of Molecular Physiology and Cell Signalling, Institute of Systems, Molecular and Integrative Biology, University of Liverpool Liverpool UK
- Centre for Pre-clinical Imaging, University of Liverpool Liverpool UK
| | | | | | | | - Arthur Taylor
- Department of Molecular Physiology and Cell Signalling, Institute of Systems, Molecular and Integrative Biology, University of Liverpool Liverpool UK
- Centre for Pre-clinical Imaging, University of Liverpool Liverpool UK
| | - Patricia Murray
- Department of Molecular Physiology and Cell Signalling, Institute of Systems, Molecular and Integrative Biology, University of Liverpool Liverpool UK
- Centre for Pre-clinical Imaging, University of Liverpool Liverpool UK
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Hernandez Pichardo A, Littlewood J, Taylor A, Wilm B, Lévy R, Murray P. Multispectral optoacoustic tomography is more sensitive than micro-computed tomography for tracking gold nanorod labelled mesenchymal stromal cells. J Biophotonics 2023; 16:e202300109. [PMID: 37431566 DOI: 10.1002/jbio.202300109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 06/28/2023] [Accepted: 06/30/2023] [Indexed: 07/12/2023]
Abstract
Tracking the fate of therapeutic cell types is important for assessing their safety and efficacy. Bioluminescence imaging (BLI) is an effective cell tracking technique, but poor spatial resolution means it has limited ability to precisely map cells in vivo in 3D. This can be overcome by using a bimodal imaging approach that combines BLI with a technique capable of generating high-resolution images. Here we compared the effectiveness of combining either multispectral optoacoustic tomography (MSOT) or micro-computed tomography (micro-CT) with BLI for tracking the fate of luciferase+ human mesenchymal stromal cells (MSCs) labelled with gold nanorods. Following subcutaneous administration in mice, the MSCs could be readily detected with MSOT but not with micro-CT. We conclude that MSOT is more sensitive than micro-CT for tracking gold nanorod-labelled cells in vivo and depending on the route of administration, can be used effectively with BLI to track MSC fate in mice.
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Affiliation(s)
- Alejandra Hernandez Pichardo
- Department of Molecular Physiology and Cell Signalling, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, UK
- Centre for Pre-clinical Imaging, University of Liverpool, Liverpool, UK
| | - James Littlewood
- Department of Molecular Physiology and Cell Signalling, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, UK
- iThera Medical GmbH, Munich, Germany
| | - Arthur Taylor
- Department of Molecular Physiology and Cell Signalling, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, UK
- Centre for Pre-clinical Imaging, University of Liverpool, Liverpool, UK
| | - Bettina Wilm
- Department of Molecular Physiology and Cell Signalling, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, UK
- Centre for Pre-clinical Imaging, University of Liverpool, Liverpool, UK
| | - Raphaël Lévy
- Université Sorbonne Paris Nord and Université de Paris, INSERM, LVTS, Paris, France
| | - Patricia Murray
- Department of Molecular Physiology and Cell Signalling, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, UK
- Centre for Pre-clinical Imaging, University of Liverpool, Liverpool, UK
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Luchian A, Cepeda KT, Harwood R, Murray P, Wilm B, Kenny S, Pregel P, Ressel L. Quantifying acute kidney injury in an Ischaemia-Reperfusion Injury mouse model using deep-learning-based semantic segmentation in histology. Biol Open 2023; 12:bio059988. [PMID: 37642317 PMCID: PMC10537956 DOI: 10.1242/bio.059988] [Citation(s) in RCA: 0] [Impact Index Per Article: 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: 06/15/2023] [Accepted: 08/22/2023] [Indexed: 08/31/2023] Open
Abstract
This study focuses on ischaemia-reperfusion injury (IRI) in kidneys, a cause of acute kidney injury (AKI) and end-stage kidney disease (ESKD). Traditional kidney damage assessment methods are semi-quantitative and subjective. This study aims to use a convolutional neural network (CNN) to segment murine kidney structures after IRI, quantify damage via CNN-generated pathological measurements, and compare this to conventional scoring. The CNN was able to accurately segment the different pathological classes, such as Intratubular casts and Tubular necrosis, with an F1 score of over 0.75. Some classes, such as Glomeruli and Proximal tubules, had even higher statistical values with F1 scores over 0.90. The scoring generated based on the segmentation approach statistically correlated with the semiquantitative assessment (Spearman's rank correlation coefficient=0.94). The heatmap approach localised the intratubular necrosis mainly in the outer stripe of the outer medulla, while the tubular casts were also present in more superficial or deeper portions of the cortex and medullary areas. This study presents a CNN model capable of segmenting multiple classes of interest, including acute IRI-specific pathological changes, in a whole mouse kidney section and can provide insights into the distribution of pathological classes within the whole mouse kidney section.
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Affiliation(s)
- Andreea Luchian
- Department of Veterinary Anatomy Physiology and Pathology, Institute of Infection, Veterinary and Ecological Sciences, Faculty of Health & Life Sciences, University of Liverpool, Liverpool, CH64 7TE, UK
| | - Katherine Trivino Cepeda
- Department of Molecular Physiology and Cell Signalling, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, L69 7BE, UK
- Centre for Pre-clinical Imaging, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, L69 7TX, UK
| | - Rachel Harwood
- Department of Paediatric Surgery, Alder Hey in the Park, Liverpool, L14 5AB, UK
| | - Patricia Murray
- Department of Molecular Physiology and Cell Signalling, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, L69 7BE, UK
- Centre for Pre-clinical Imaging, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, L69 7TX, UK
| | - Bettina Wilm
- Department of Molecular Physiology and Cell Signalling, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, L69 7BE, UK
- Centre for Pre-clinical Imaging, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, L69 7TX, UK
| | - Simon Kenny
- Department of Paediatric Surgery, Alder Hey in the Park, Liverpool, L14 5AB, UK
| | - Paola Pregel
- Department of Veterinary Sciences, University of Turin, Turin, 8-10124, Italy
| | - Lorenzo Ressel
- Department of Veterinary Anatomy Physiology and Pathology, Institute of Infection, Veterinary and Ecological Sciences, Faculty of Health & Life Sciences, University of Liverpool, Liverpool, CH64 7TE, UK
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Hernandez Pichardo A, Wilm B, Liptrott NJ, Murray P. Intravenous Administration of Human Umbilical Cord Mesenchymal Stromal Cells Leads to an Inflammatory Response in the Lung. Stem Cells Int 2023; 2023:7397819. [PMID: 37705699 PMCID: PMC10497368 DOI: 10.1155/2023/7397819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 06/25/2023] [Accepted: 08/04/2023] [Indexed: 09/15/2023] Open
Abstract
Mesenchymal stromal cells (MSCs) administered intravenously (IV) have shown efficacy in preclinical models of various diseases. This is despite the cells not reaching the site of injury due to entrapment in the lungs. The immunomodulatory properties of MSCs are thought to underlie their therapeutic effects, irrespective of whether they are sourced from bone marrow, adipose tissue, or umbilical cord. To better understand how MSCs affect innate immune cell populations in the lung, we evaluated the distribution and phenotype of neutrophils, monocytes, and macrophages by flow cytometry and histological analyses after delivering human umbilical cord-derived MSCs (hUC-MSCs) IV into immunocompetent mice. After 2 hr, we observed a significant increase in neutrophils, and proinflammatory monocytes and macrophages. Moreover, these immune cells localized in close proximity to the MSCs, suggesting an active role in their clearance. By 24 hr, we detected an increase in anti-inflammatory monocytes and macrophages. These results suggest that the IV injection of hUC-MSCs leads to an initial inflammatory phase in the lung shortly after injection, followed by a resolution phase 24 hr later.
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Affiliation(s)
- Alejandra Hernandez Pichardo
- Department of Molecular Physiology and Cell Signalling, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, UK
- Centre for Pre-Clinical Imaging, Faculty of Health and Life Sciences, University of Liverpool, Liverpool, UK
| | - Bettina Wilm
- Department of Molecular Physiology and Cell Signalling, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, UK
- Centre for Pre-Clinical Imaging, Faculty of Health and Life Sciences, University of Liverpool, Liverpool, UK
| | - Neill J. Liptrott
- Immunocompatibility Group, Department of Pharmacology and Therapeutics, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, UK
| | - Patricia Murray
- Department of Molecular Physiology and Cell Signalling, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, UK
- Centre for Pre-Clinical Imaging, Faculty of Health and Life Sciences, University of Liverpool, Liverpool, UK
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Murray P. The trachea transplant scandal and "compassionate use". BMJ 2023; 382:1808. [PMID: 37562813 DOI: 10.1136/bmj.p1808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/12/2023]
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Calcat-I-Cervera S, Rendra E, Scaccia E, Amadeo F, Hanson V, Wilm B, Murray P, O'Brien T, Taylor A, Bieback K. Harmonised culture procedures minimise but do not eliminate mesenchymal stromal cell donor and tissue variability in a decentralised multicentre manufacturing approach. Stem Cell Res Ther 2023; 14:120. [PMID: 37143116 PMCID: PMC10161493 DOI: 10.1186/s13287-023-03352-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 04/20/2023] [Indexed: 05/06/2023] Open
Abstract
BACKGROUND Mesenchymal stromal cells (MSCs), commonly sourced from adipose tissue, bone marrow and umbilical cord, have been widely used in many medical conditions due to their therapeutic potential. Yet, the still limited understanding of the underlying mechanisms of action hampers clinical translation. Clinical potency can vary considerably depending on tissue source, donor attributes, but importantly, also culture conditions. Lack of standard procedures hinders inter-study comparability and delays the progression of the field. The aim of this study was A- to assess the impact on MSC characteristics when different laboratories, performed analysis on the same MSC material using harmonised culture conditions and B- to understand source-specific differences. METHODS Three independent institutions performed a head-to-head comparison of human-derived adipose (A-), bone marrow (BM-), and umbilical cord (UC-) MSCs using harmonised culture conditions. In each centre, cells from one specific tissue source were isolated and later distributed across the network to assess their biological properties, including cell expansion, immune phenotype, and tri-lineage differentiation (part A). To assess tissue-specific function, angiogenic and immunomodulatory properties and the in vivo biodistribution were compared in one expert lab (part B). RESULTS By implementing a harmonised manufacturing workflow, we obtained largely reproducible results across three independent laboratories in part A of our study. Unique growth patterns and differentiation potential were observed for each tissue source, with similar trends observed between centres. Immune phenotyping verified expression of typical MSC surface markers and absence of contaminating surface markers. Depending on the established protocols in the different laboratories, quantitative data varied slightly. Functional experiments in part B concluded that conditioned media from BM-MSCs significantly enhanced tubulogenesis and endothelial migration in vitro. In contrast, immunomodulatory studies reported superior immunosuppressive abilities for A-MSCs. Biodistribution studies in healthy mice showed lung entrapment after administration of all three types of MSCs, with a significantly faster clearance of BM-MSCs. CONCLUSION These results show the heterogeneous behaviour and regenerative properties of MSCs as a reflection of intrinsic tissue-origin properties while providing evidence that the use of harmonised culture procedures can reduce but do not eliminate inter-lab and operator differences.
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Affiliation(s)
- Sandra Calcat-I-Cervera
- College of Medicine, Nursing and Health Science, School of Medicine, Regenerative Medicine Institute (REMEDI), University of Galway, Galway, Ireland
| | - Erika Rendra
- Institute of Transfusion Medicine and Immunology, Medical Faculty Mannheim, Heidelberg University, German Red Cross Blood Service, Baden-Württemberg-Hessen, Friedrich-Ebert Str. 107, 68167, Mannheim, Germany
| | - Eleonora Scaccia
- Institute of Transfusion Medicine and Immunology, Medical Faculty Mannheim, Heidelberg University, German Red Cross Blood Service, Baden-Württemberg-Hessen, Friedrich-Ebert Str. 107, 68167, Mannheim, Germany
| | - Francesco Amadeo
- Department of Molecular Physiology and Cell Signalling, University of Liverpool, Liverpool, UK
- Cellular Therapies Laboratory, NHS Blood and Transplant, Liverpool, UK
- Centre for Preclinical Imaging, University of Liverpool, Liverpool, UK
| | - Vivien Hanson
- Cellular Therapies Laboratory, NHS Blood and Transplant, Liverpool, UK
| | - Bettina Wilm
- Department of Molecular Physiology and Cell Signalling, University of Liverpool, Liverpool, UK
- Centre for Preclinical Imaging, University of Liverpool, Liverpool, UK
| | - Patricia Murray
- Department of Molecular Physiology and Cell Signalling, University of Liverpool, Liverpool, UK
- Centre for Preclinical Imaging, University of Liverpool, Liverpool, UK
| | - Timothy O'Brien
- College of Medicine, Nursing and Health Science, School of Medicine, Regenerative Medicine Institute (REMEDI), University of Galway, Galway, Ireland
- CÚRAM, SFI Research Centre for Medical Devices, University of Galway, Galway, Ireland
| | - Arthur Taylor
- Department of Molecular Physiology and Cell Signalling, University of Liverpool, Liverpool, UK
- Centre for Preclinical Imaging, University of Liverpool, Liverpool, UK
| | - Karen Bieback
- Institute of Transfusion Medicine and Immunology, Medical Faculty Mannheim, Heidelberg University, German Red Cross Blood Service, Baden-Württemberg-Hessen, Friedrich-Ebert Str. 107, 68167, Mannheim, Germany.
- Mannheim Institute of Innate Immunoscience, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.
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Amadeo F, Hanson V, Liptrott NJ, Wilm B, Murray P, Taylor A. Fate of intravenously administered umbilical cord mesenchymal stromal cells and interactions with the host's immune system. Biomed Pharmacother 2023; 159:114191. [PMID: 36623449 DOI: 10.1016/j.biopha.2022.114191] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/19/2022] [Accepted: 12/28/2022] [Indexed: 01/09/2023] Open
Abstract
Mesenchymal stromal cells (MSCs) are multipotent cells showing promise in pre-clinical studies and currently used in many clinical trials. The regenerative potential of MSCs is mediated, at least in part, by direct and indirect immunomodulatory processes. However, the mechanism of action is not fully understood yet, and there are still concerns about possible undesired negative effects associated with the administration of living cells. In this study, we (i) compare the long-term fate and safety of umbilical cord (UC-)MSCs administered to immunocompetent and immunocompromised (severe combined immunodeficient (SCID) and non-obese diabetic (NOD)/SCID) animals, and (ii) investigate the immunological response of the host to the administered cells. Intravenous administration of firefly luciferase expressing UC-MSCs revealed that the cells get trapped in the lungs of both immunocompetent and immunocompromised animals, with > 95% of the cells disappearing within 72 h after administration. In 27% of the SCID and 45% of the NOD/SCID, a small fraction of the cells lived up to day 14 but in most cases they all disappeared earlier. One NOD/SCID mouse showed a weak signal up to day 31. Immunocompetent mice displayed elevated percentages of neutrophils in the lungs, the blood, and the spleen 2 h after the administration of the cells. The concentration of neutrophil chemoattractants (MCP1, CCL7, Gro-α and IP-10) were also increased in the plasma of the animals 2 h after the administration of the MSCs. Our results suggest that although the UC-MSCs are short-lived in mice, they still result in an immunological response that might contribute to a therapeutic effect.
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Affiliation(s)
- Francesco Amadeo
- Cellular Therapies Laboratory, NHS Blood and Transplant, Liverpool, UK; Department of Molecular Physiology and Cell Signalling, University of Liverpool, Liverpool, UK; Centre for Preclinical Imaging, University of Liverpool, Liverpool, UK
| | - Vivien Hanson
- Cellular Therapies Laboratory, NHS Blood and Transplant, Liverpool, UK
| | - Neill J Liptrott
- Immunocompatibility Group, Department of Pharmacology & Therapeutics, University of Liverpool, Liverpool, UK
| | - Bettina Wilm
- Department of Molecular Physiology and Cell Signalling, University of Liverpool, Liverpool, UK; Centre for Preclinical Imaging, University of Liverpool, Liverpool, UK
| | - Patricia Murray
- Department of Molecular Physiology and Cell Signalling, University of Liverpool, Liverpool, UK; Centre for Preclinical Imaging, University of Liverpool, Liverpool, UK
| | - Arthur Taylor
- Department of Molecular Physiology and Cell Signalling, University of Liverpool, Liverpool, UK; Centre for Preclinical Imaging, University of Liverpool, Liverpool, UK.
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Wilmshurst P, Bewley S, Murray P. Hyperbaric oxygen therapy for the treatment of long COVID. Clin Med (Lond) 2023; 23:99-100. [PMID: 36697009 PMCID: PMC11046540 DOI: 10.7861/clinmed.let.23.1.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
| | - Susan Bewley
- King's College London, UK, and trustee of HealthSense-UK
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Amadeo F, Hanson V, Murray P, Taylor A. DEAE-Dextran Enhances the Lentiviral Transduction of Primary Human Mesenchymal Stromal Cells from All Major Tissue Sources Without Affecting Their Proliferation and Phenotype. Mol Biotechnol 2023; 65:544-555. [PMID: 35999479 PMCID: PMC9974715 DOI: 10.1007/s12033-022-00549-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 08/04/2022] [Indexed: 10/15/2022]
Abstract
Genetic engineering of mesenchymal stromal cells (MSCs) is a tool widely used to explore MSC properties in vitro and in vivo. Lentiviral infection with the use of polycations as an adjuvant is a method that is commonly used to generate stably transduced cells. However, it is known that some polycations can negatively affect primary MSCs and to date, no study has explored the effect of different polycations on the transduction efficiency and properties of all main types of MSCs, namely those derived from umbilical cord, bone marrow and adipose tissue. Here we explore a range of polycations, using transduction protocols with and without spinoculation, to produce stably transduced MSCs from these three tissue sources. We identified that an overnight incubation with diethylaminoethyl-dextran (DEAE-Dextran) is the protocol associated with the best transduction efficiency without compromising the viability of the cells, and which worked consistently with lentiviral particles encoding for different transgenes. Transduced and sorted MSC populations revealed no significant changes in proliferation, morphology and expression of MSC markers compared to naïve MSCs. Following this study, we conclude that DEAE-Dextran is a polycation that can be successfully used to enhance the transduction of MSCs from all major tissue sources.
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Affiliation(s)
- Francesco Amadeo
- grid.436365.10000 0000 8685 6563Cellular Therapies Laboratory, NHS Blood and Transplant, Liverpool, UK ,grid.10025.360000 0004 1936 8470Department of Molecular Physiology and Cell Signalling, University of Liverpool, Liverpool, UK
| | - Vivien Hanson
- grid.436365.10000 0000 8685 6563Cellular Therapies Laboratory, NHS Blood and Transplant, Liverpool, UK
| | - Patricia Murray
- grid.10025.360000 0004 1936 8470Department of Molecular Physiology and Cell Signalling, University of Liverpool, Liverpool, UK
| | - Arthur Taylor
- Department of Molecular Physiology and Cell Signalling, University of Liverpool, Liverpool, UK.
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Fryer C, Murray P, Zhang H. Evaluation of Cytotoxicity and Bioimaging of Nitrogen-Vacancy Nanodiamonds. Nanomaterials (Basel) 2022; 12:4196. [PMID: 36500818 PMCID: PMC9739004 DOI: 10.3390/nano12234196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 11/20/2022] [Accepted: 11/22/2022] [Indexed: 06/17/2023]
Abstract
Nanodiamonds, due to their chemical inertness and biocompatibility, have found extensive uses in drug delivery and biomedical applications. Fluorescent nanodiamonds with fluorescent properties generated by nitrogen-vacancy defects have been intensively investigated for bioimaging, due to their high quantum yield and high photobleaching stability. In addition, the surface properties and particle size of nanodiamonds have significant impacts on cellular uptake and imaging quality. In this study, nitrogen-vacancy nanodiamonds with different particle sizes (40 nm and 90 nm) have been physicochemically characterised and investigated for their cytotoxicity and potential in fluorescence imaging. The nanodiamonds (with concentrations up to 100 µg/mL) showed cell viability >70% with mesenchymal stromal cells. The number of nanodiamonds was observed to have a larger impact on cell viability than the mass of nanodiamonds. Larger nanodiamonds (90 nm) exhibited a lower level of cytotoxicity, higher cellular uptake and fluorescence intensity. The results indicate the potential of using fluorescent nanodiamonds as a nanoprobe for effective bioimaging and cell tracking.
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Affiliation(s)
- Claudia Fryer
- Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, UK
| | - Patricia Murray
- Department of Molecular Physiology and Cell Signalling, University of Liverpool, Liverpool L69 3BX, UK
| | - Haifei Zhang
- Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, UK
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13
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Muñiz-García A, Wilm B, Murray P, Cross MJ. Extracellular Vesicles from Human Umbilical Cord-Derived MSCs Affect Vessel Formation In Vitro and Promote VEGFR2-Mediated Cell Survival. Cells 2022; 11:cells11233750. [PMID: 36497011 PMCID: PMC9735515 DOI: 10.3390/cells11233750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 11/19/2022] [Accepted: 11/21/2022] [Indexed: 11/25/2022] Open
Abstract
Mesenchymal stromal cell (MSC)-derived extracellular vesicles (EVs) have emerged as novel tools in regenerative medicine. Angiogenesis modulation is widely studied for the treatment of ischaemic diseases, wound healing, and tissue regeneration. Here, we have shown that EVs from human umbilical cord-derived MSCs can affect VEGFR2 signalling, a master regulator of angiogenesis homeostasis, via altering the phosphorylation of AKT. This translates into an inhibition of apoptosis, promoting exclusively cell survival, but not proliferation, in human microvascular endothelial cells. Interestingly, when comparing EVs from normoxic cells to those obtained from hypoxia (1% O2) preconditioned cells, hypoxia-derived EVs appear to have a slightly enhanced effect. Furthermore, when studied in a longer term endothelial-fibroblast co-culture angiogenesis model in vitro, both EV populations demonstrated a positive effect on vessel formation, evidenced by increased vessel networks with tubes of significantly larger diameters. Our data reveals that EVs selectively target components of the angiogenic pathway, promoting VEGFR2-mediated cell survival via enhancement of AKT activation. Our data show that EVs are able to enhance specific components of the VEGF signalling pathway and may have therapeutic potential to support endothelial cell survival.
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Affiliation(s)
- Ana Muñiz-García
- Department of Molecular Physiology and Cell Signalling, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool L69 3BX, UK
| | - Bettina Wilm
- Department of Molecular Physiology and Cell Signalling, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool L69 3BX, UK
| | - Patricia Murray
- Department of Molecular Physiology and Cell Signalling, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool L69 3BX, UK
- Correspondence: (P.M.); (M.J.C.)
| | - Michael J. Cross
- Department of Pharmacology and Therapeutics, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool L69 3GE, UK
- Correspondence: (P.M.); (M.J.C.)
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14
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Pichardo AH, Amadeo F, Wilm B, Lévy R, Ressel L, Murray P, Sée V. Optical Tissue Clearing to Study the Intra-Pulmonary Biodistribution of Intravenously Delivered Mesenchymal Stromal Cells and Their Interactions with Host Lung Cells. Int J Mol Sci 2022; 23:14171. [PMID: 36430651 PMCID: PMC9699424 DOI: 10.3390/ijms232214171] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 11/06/2022] [Accepted: 11/08/2022] [Indexed: 11/18/2022] Open
Abstract
Mesenchymal stromal cells (MSCs) injected intravenously are trapped in the capillaries of the lungs and die within the first 24 h. Studying the biodistribution and fate of labelled therapeutic cells in the 3D pulmonary context is important to understand their function in this organ and gain insights into their mechanisms of action. Optical tissue clearing enables volumetric cell tracking at single-cell resolution. Thus, we compared three optical tissue-clearing protocols (Clear, Unobstructed Brain/Body Imaging Cocktails and Computational analysis (CUBIC), modified stabilised 3D imaging of solvent-cleared organs (s-DISCO) and ethyl cinnamate (ECi)) to evaluate their potential to track the biodistribution of human umbilical cord MSCs expressing the tdTomato fluorescence reporter and investigate how they interact with host cells in the mouse lung. The results showed that although CUBIC clearing is the only method that enables direct imaging of fluorescently labelled MSCs, combining s-DISCO or ECi with immunofluorescence or dye labelling allows the interaction of MSCs with endothelial and immune cells to be studied. Overall, this comparative study offers guidance on selecting an optical tissue-clearing method for cell tracking applications.
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Affiliation(s)
- Alejandra Hernandez Pichardo
- Department of Molecular Physiology and Cell Signalling, Faculty of Health and Life Sciences, University of Liverpool, Liverpool L69 3BX, UK
- Centre for Preclinical Imaging, Faculty of Health and Life Sciences, University of Liverpool, Liverpool L69 3BX, UK
| | - Francesco Amadeo
- Department of Molecular Physiology and Cell Signalling, Faculty of Health and Life Sciences, University of Liverpool, Liverpool L69 3BX, UK
- Centre for Preclinical Imaging, Faculty of Health and Life Sciences, University of Liverpool, Liverpool L69 3BX, UK
| | - Bettina Wilm
- Department of Molecular Physiology and Cell Signalling, Faculty of Health and Life Sciences, University of Liverpool, Liverpool L69 3BX, UK
- Centre for Preclinical Imaging, Faculty of Health and Life Sciences, University of Liverpool, Liverpool L69 3BX, UK
| | - Raphaël Lévy
- INSERM, LVTS, Université Sorbonne Paris Nord, F-75018 Paris, France
| | - Lorenzo Ressel
- Department of Veterinary Anatomy Physiology and Pathology, Faculty of Health and Life Sciences, University of Liverpool, Liverpool L69 3BX, UK
| | - Patricia Murray
- Department of Molecular Physiology and Cell Signalling, Faculty of Health and Life Sciences, University of Liverpool, Liverpool L69 3BX, UK
- Centre for Preclinical Imaging, Faculty of Health and Life Sciences, University of Liverpool, Liverpool L69 3BX, UK
| | - Violaine Sée
- CNRS UMR 5305, Tissue Biology and Therapeutic Engineering Laboratory (LBTI), University Claude Bernard Lyon1, 69007 Lyon, France
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15
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O’Kelly J, Browne E, Murray P, Keane J, Daly P, Cullen I. Distal urethral carcinoma: Contemporary management with phallus preserving techniques. EUR UROL SUPPL 2022. [DOI: 10.1016/s2666-1683(22)00977-6] [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: 10/14/2022] Open
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16
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Murray P, O'Connor CT, Maher V, Moore D. Opportunities for Education in Heart Failure Pharmacotherapy Demonstrated by a Survey of Clinicians. Ir Med J 2022; 115:577. [PMID: 35695672] [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] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Aim We conducted a survey of practitioners' knowledge of the clinical application of the major drug classes in HF, with reference to the European Society of Cardiology guidelines. The aim was to identify areas for practice development through education, which may improve HF morbidity and mortality. Methods We distributed a 14 item questionnaire assessing doctors knowledge of indications and contraindications for the major HF drug classes. Results Total number of responses was 127: Intern (N=21), SHO (N=64), Registrar (N=12), SpR (N=14), Consultant (N=4), GP (N=2). Consultants and GPs were excluded from analysis due to underrepresentation. Median years of practice was 4. Indications were correctly identified in a mean of 78% of responses overall. Of participants who felt comfortable with initiation and up-titration of beta blockers (N=84), only 31% (N=26) correctly identified an optimal target heart rate of less than 70 beats per minute. Forty-five percent (N=50) identified serum potassium and creatinine concentrations generally considered safe as contraindications to the initiation of MRA. Twenty-five percent of respondents (N=28) were unaware of a specialist HF service that catered to their institution, and how to refer to it, but 99% (N=110) felt that their practice would benefit from further education on HF pharmacotherapy. Conclusion Results of this survey suggest a need, and indeed a demand, for further education for clinicians in order to reduce mortality, morbidity, and hospital readmission in HF, as well as their attendant costs.
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Affiliation(s)
- P Murray
- Department of Cardiology, Tallaght University Hospital
| | - C T O'Connor
- Department of Cardiology, Tallaght University Hospital
| | - V Maher
- Department of Cardiology, Tallaght University Hospital
| | - D Moore
- Department of Cardiology, Tallaght University Hospital
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Affiliation(s)
| | - Patricia Murray
- Department of Molecular Physiology and Cell Signalling, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, UK
| | - Raphaël Lévy
- Université Sorbonne Paris Nord, INSERM, LVTS, F-75018 Paris, France
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18
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Harwood R, Bridge J, Ressel L, Scarfe L, Sharkey J, Czanner G, Kalra PA, Odudu A, Kenny S, Wilm B, Murray P. Murine models of renal ischemia reperfusion injury: An opportunity for refinement using noninvasive monitoring methods. Physiol Rep 2022; 10:e15211. [PMID: 35266337 PMCID: PMC8907719 DOI: 10.14814/phy2.15211] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 01/25/2022] [Accepted: 02/07/2022] [Indexed: 06/14/2023] Open
Abstract
BACKGROUND Renal ischemia reperfusion injury (R-IRI) can cause acute kidney injury (AKI) and chronic kidney disease (CKD), resulting in significant morbidity and mortality. To understand the underlying mechanisms, reproducible small-animal models of AKI and CKD are needed. We describe how innovative technologies for measuring kidney function noninvasively in small rodents allow successful refinement of the R-IRI models, and offer the unique opportunity to monitor longitudinally in individual animals the transition from AKI to CKD. METHODS Male BALB/c mice underwent bilateral renal pedicle clamping (AKI) or unilateral renal pedicle clamping with delayed contralateral nephrectomy (CKD) under isoflurane anesthetic. Transdermal GFR monitoring and multispectral optoacoustic tomography (MSOT) in combination with statistical analysis were used to identify and standardize variables within these models. RESULTS Pre-clamping anesthetic time was one of the most important predictors of AKI severity after R-IRI. Standardizing pre-clamping time resulted in a more predictably severe AKI model. In the CKD model, MSOT demonstrated initial improvement in renal function, followed by significant progressive reduction in function between weeks 2 and 4. Performing contralateral nephrectomy on day 14 enabled the development of CKD with minimal mortality. CONCLUSIONS Noninvasive monitoring of global and individual renal function after R-IRI is feasible and reproducible. These techniques can facilitate refinement of kidney injury models and enable the degree of injury seen in preclinical models to be translated to those seen in the clinical setting. Thus, future therapies can be tested in a clinically relevant, noninvasive manner.
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Affiliation(s)
- Rachel Harwood
- Institute of Translational MedicineUniversity of LiverpoolLiverpoolUK
- Alder Hey Children's HospitalLiverpoolUK
| | - Joshua Bridge
- Department of BiostatisticsUniversity of LiverpoolLiverpoolUK
- Department of Eye and Vision ScienceUniversity of LiverpoolLiverpoolUK
| | - Lorenzo Ressel
- Department of Veterinary Pathology and Public HealthUniversity of LiverpoolLiverpoolUK
| | - Lauren Scarfe
- Institute of Translational MedicineUniversity of LiverpoolLiverpoolUK
| | - Jack Sharkey
- Institute of Translational MedicineUniversity of LiverpoolLiverpoolUK
| | - Gabriela Czanner
- Department of BiostatisticsUniversity of LiverpoolLiverpoolUK
- University of LiverpoolLiverpoolUK
- University of LiverpoolLiverpoolUK
| | - Philip A Kalra
- Division of Cardiovascular SciencesUniversity of ManchesterManchesterUK
- Salford Royal NHS Foundation TrustSalfordUK
| | - Aghogho Odudu
- Division of Cardiovascular SciencesUniversity of ManchesterManchesterUK
| | - Simon Kenny
- Institute of Translational MedicineUniversity of LiverpoolLiverpoolUK
- Alder Hey Children's HospitalLiverpoolUK
| | - Bettina Wilm
- Institute of Translational MedicineUniversity of LiverpoolLiverpoolUK
| | - Patricia Murray
- Institute of Translational MedicineUniversity of LiverpoolLiverpoolUK
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19
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MEADE T, Côté J, Lyons L, Twomey P, O'Riordan A, Watson A, O'Regan J, Fitzgerald T, Malik F, Clince M, Teh J, Holian J, Murray P. POS-072 A PROSPECTIVE AUDIT OF THE CLINICAL IMPLEMENTATION OF URINE NEUTROPHIL GELATINASE-ASSOCIATED LIPOCALIN (uNGAL) AS A BIOMARKER OF ACUTE KIDNEY INJURY IN HOSPITALISED PATIENTS. Kidney Int Rep 2022. [DOI: 10.1016/j.ekir.2022.01.081] [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: 11/26/2022] Open
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20
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Muñiz-García A, Romero M, Falcόn-Perez JM, Murray P, Zorzano A, Mora S. Hypoxia-induced HIF1α activation regulates small extracellular vesicle release in human embryonic kidney cells. Sci Rep 2022; 12:1443. [PMID: 35087095 PMCID: PMC8795438 DOI: 10.1038/s41598-022-05161-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 12/24/2021] [Indexed: 12/21/2022] Open
Abstract
Extracellular vesicles (EVs) are membrane enclosures released by eukaryotic cells that carry bioactive molecules and serve to modulate biological responses in recipient cells. Both increased EV release and altered EV composition are associated with the development and progression of many pathologies including cancer. Hypoxia, a feature of rapidly growing solid tumours, increases the release of EVs. However, the molecular mechanisms remain unknown. The hypoxia inducible factors (HIFs) are transcription factors that act as major regulators of the cellular adaptations to hypoxia. Here, we investigated the requirement of HIF pathway activation for EV release in Human Embryonic Kidney Cells (HEK293). Time course experiments showed that EV release increased concomitantly with sustained HIF1α and HIF2α activation following the onset of hypoxia. shRNA mediated knock-down of HIF1α but not HIF2α abrogated the effect of hypoxia on EV release, suggesting HIF1α is involved in this process. However, stabilization of HIF proteins in normoxic conditions through: (i) heterologous expression of oxygen insensitive HIF1α or HIF2α mutants in normoxic cells or (ii) chemical inhibition of the prolyl hydroxylase 2 (PHD2) repressor protein, did not increase EV release, suggesting HIF activation alone is not sufficient for this process. Our findings suggest HIF1α plays an important role in the regulation of EV release during hypoxia in HEK293 cells, however other hypoxia triggered mechanisms likely contribute as stabilization of HIF1α alone in normoxia is not sufficient for EV release.
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Affiliation(s)
- Ana Muñiz-García
- Department of Molecular Physiology and Cell Signalling (Formerly Dpt. Cellular and Molecular Physiology), The University of Liverpool, Liverpool, L69 3BX, UK.,Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, Baldiri Reixac 13, 08028, Barcelona, Spain
| | - Montserrat Romero
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, Baldiri Reixac 13, 08028, Barcelona, Spain.,Department of Biochemistry and Molecular Biomedicine, Faculty of Biology, University of Barcelona, Av. Diagonal 643, 08028, Barcelona, Spain.,CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
| | - Juan Manuel Falcόn-Perez
- Exosomes Laboratory, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), 48160, Derio, Bizkaia, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, 28029, Madrid, Spain.,IKERBASQUE, Basque Foundation for Science, 48015, Bilbao, Bizkaia, Spain
| | - Patricia Murray
- Department of Molecular Physiology and Cell Signalling (Formerly Dpt. Cellular and Molecular Physiology), The University of Liverpool, Liverpool, L69 3BX, UK
| | - Antonio Zorzano
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, Baldiri Reixac 13, 08028, Barcelona, Spain.,Department of Biochemistry and Molecular Biomedicine, Faculty of Biology, University of Barcelona, Av. Diagonal 643, 08028, Barcelona, Spain.,CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
| | - Silvia Mora
- Department of Molecular Physiology and Cell Signalling (Formerly Dpt. Cellular and Molecular Physiology), The University of Liverpool, Liverpool, L69 3BX, UK. .,Department of Biochemistry and Molecular Biomedicine, Faculty of Biology, University of Barcelona, Av. Diagonal 643, 08028, Barcelona, Spain. .,Institute of Biomedicine, University of Barcelona, 08028, Barcelona, Spain.
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21
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Wheen P, O'Callaghan D, Murray P, Minelli C, Byrne L, Armstrong R, Maher V, Shiels P, Fleming S, Daly C. Persisting Symptomatic Severe Secondary Mitral Regurgitation in Heart Failure Patients. Ir Med J 2022; 115:514. [PMID: 35279048] [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] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Aims We aimed to assess the rate of persisting severe symptomatic secondary mitral regurgitation (MR) in a newly diagnosed heart failure (HF) population following optimisation of guideline directed medical therapy (GDMT), cardiac resynchronisation therapy (CRT) and revascularisation. Methods We assessed all new patients referred to our hospital group’s HF clinics. We retrospectively reviewed these patients at HF clinic enrolment, HF programme completion, as well as most recent follow up. Results Of the 242 new patients referred to our HF clinics, there were 10 patients (4.1%) who had either persisting symptomatic severe secondary MR at HF programme completion, or had undergone mitral valve surgery. There were no percutaneous mitral valve repairs at the time of these patients’ referrals. The rates of ACE/ARB/ARNI, BB and MRA use were 87.8%, 94.1%, and 49.8% in those with mid ranged, or reduced ejection fraction. The rates of ICD and CRT therapy were 15.1% and 4.4% at follow up. Patients with severe MR had higher time adjusted rates of death or hospitalization for heart failure. Conclusion In a well-treated newly diagnosed HF population, repeat assessment at HF programme completion suggests 4.1% of patients have a persisting indication for percutaneous mitral valve repair based on persisting severe symptomatic secondary MR.
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Affiliation(s)
- P Wheen
- School of Medicine, Trinity College, Dublin, Ireland
- St. James Hospital, James Street, Dublin 8, Ireland
- Tallaght University Hospital, Dublin 24, Ireland
| | | | - P Murray
- Tallaght University Hospital, Dublin 24, Ireland
| | - C Minelli
- Midlands Regional Hospital, Tullamore, Co. Offaly, Ireland
| | - L Byrne
- Midlands Regional Hospital, Portlaoise, Co. Laois, Ireland
| | - R Armstrong
- St. James Hospital, James Street, Dublin 8, Ireland
| | - V Maher
- Tallaght University Hospital, Dublin 24, Ireland
| | - P Shiels
- Midlands Regional Hospital, Tullamore, Co. Offaly, Ireland
| | - S Fleming
- Midlands Regional Hospital, Portlaoise, Co. Laois, Ireland
| | - C Daly
- St. James Hospital, James Street, Dublin 8, Ireland
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22
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O'Kelly JA, Browne E, Murray P, Keane J, Daly P, Cullen IM. Distal urethral carcinoma: Contemporary management with phallus preserving techniques. Surgeon 2022; 20:e282-e287. [PMID: 35012866 DOI: 10.1016/j.surge.2021.08.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 05/17/2021] [Accepted: 08/03/2021] [Indexed: 11/16/2022]
Abstract
INTRODUCTION Primary urethral carcinoma is a rare clinical entity with an incidence of 1 case per million in the United Kingdom. Cancers of the distal urethra are most commonly of squamous subtype and often associated with Human Papilloma Virus infection. Penile preserving techniques are recommended in tumours of the pendulous urethra with a number of surgical approaches described. Herein, we describe the surgical management of 7 patients presenting with primary urethral carcinoma. METHODS Seven patients diagnosed with primary urethral carcinoma of the distal urethra were identified using a prospectively maintained penile cancer database at our institution from May 2017 to November 2020. RESULTS The mean age at presentation was 56.5 (33-80) years. Presenting symptoms included visible lesion, LUTS and a groin mass. Three patients had lesions located within the glanular urethra and had a distal urethrectomy and primary closure. Two patients with lesions extending proximal to the glanular urethra and into or beyond the fossa navicularis had a distal urethrectomy with a hypospadic neomeatus formation. One patient with tumour extending into the glans penis underwent distal urethrectomy and partial glansectomy with split thickness skin graft. A partial penectomy was performed for one patient with urethral tumour invading the corporal heads. Mean follow-up was 23.4 (±17.0) months. There have been no disease recurrences to date. CONCLUSION Penile preserving techniques are feasible in patients with tumours of the pendulous urethra and do not appear to compromise local control.
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Affiliation(s)
- J A O'Kelly
- Department of Urology, University Hospital Waterford, Waterford, Ireland; Royal College of Surgeons in Ireland, Dublin, Ireland.
| | - E Browne
- Department of Urology, University Hospital Waterford, Waterford, Ireland; Royal College of Surgeons in Ireland, Dublin, Ireland
| | - P Murray
- Department of Urology, University Hospital Waterford, Waterford, Ireland; Royal College of Surgeons in Ireland, Dublin, Ireland
| | - J Keane
- Department of Urology, University Hospital Waterford, Waterford, Ireland; Royal College of Surgeons in Ireland, Dublin, Ireland
| | - P Daly
- Department of Urology, University Hospital Waterford, Waterford, Ireland; Royal College of Surgeons in Ireland, Dublin, Ireland
| | - I M Cullen
- Department of Urology, University Hospital Waterford, Waterford, Ireland; Royal College of Surgeons in Ireland, Dublin, Ireland; National Cancer Control Programme (NCCP), Dublin, Ireland
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23
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Amadeo F, Trivino Cepeda K, Littlewood J, Wilm B, Taylor A, Murray P. Mesenchymal stromal cells: what have we learned so far about their therapeutic potential and mechanisms of action? Emerg Top Life Sci 2021; 5:549-562. [PMID: 34495324 PMCID: PMC8589440 DOI: 10.1042/etls20210013] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 08/11/2021] [Accepted: 08/27/2021] [Indexed: 01/10/2023]
Abstract
Mesenchymal stromal cells (MSCs) have been found to be safe and effective in a wide range of animal models of human disease. MSCs have been tested in thousands of clinical trials, but results show that while these cells appear to be safe, they tend to lack efficacy. This has raised questions about whether animal models are useful for predicting efficacy in patients. However, a problem with animal studies is that there is a lack of standardisation in the models and MSC therapy regimes used; there appears to be publication bias towards studies reporting positive outcomes; and the reproducibility of results from animal experiments tends not to be confirmed prior to clinical translation. A further problem is that while some progress has been made towards investigating the mechanisms of action (MoA) of MSCs, we still fail to understand how they work. To make progress, it is important to ensure that prior to clinical translation, the beneficial effects of MSCs in animal studies are real and can be repeated by independent research groups. We also need to understand the MoA of MSCs to assess whether their effects are likely to be beneficial across different species. In this review, we give an overview of the current clinical picture of MSC therapies and discuss what we have learned from animal studies. We also give a comprehensive update of what we know about the MoA of MSCs, particularly in relation to their role in immunomodulation.
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Affiliation(s)
- Francesco Amadeo
- Department of Molecular Physiology and Cell Signalling, Integrative Biology, University of Liverpool, Crown Street, L69 3GE Liverpool, U.K
- Centre for Pre-clinical Imaging, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Crown Street, L69 3GE Liverpool, U.K
| | - Katherine Trivino Cepeda
- Department of Molecular Physiology and Cell Signalling, Integrative Biology, University of Liverpool, Crown Street, L69 3GE Liverpool, U.K
- Centre for Pre-clinical Imaging, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Crown Street, L69 3GE Liverpool, U.K
| | - James Littlewood
- Department of Molecular Physiology and Cell Signalling, Integrative Biology, University of Liverpool, Crown Street, L69 3GE Liverpool, U.K
- Centre for Pre-clinical Imaging, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Crown Street, L69 3GE Liverpool, U.K
| | - Bettina Wilm
- Department of Molecular Physiology and Cell Signalling, Integrative Biology, University of Liverpool, Crown Street, L69 3GE Liverpool, U.K
- Centre for Pre-clinical Imaging, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Crown Street, L69 3GE Liverpool, U.K
| | - Arthur Taylor
- Department of Molecular Physiology and Cell Signalling, Integrative Biology, University of Liverpool, Crown Street, L69 3GE Liverpool, U.K
- Centre for Pre-clinical Imaging, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Crown Street, L69 3GE Liverpool, U.K
| | - Patricia Murray
- Department of Molecular Physiology and Cell Signalling, Integrative Biology, University of Liverpool, Crown Street, L69 3GE Liverpool, U.K
- Centre for Pre-clinical Imaging, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Crown Street, L69 3GE Liverpool, U.K
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24
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Murray P, O'Connor C, Maher V, Moore D. Opportunities for clinician education in the pharmacotherapy of stable heart failure. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.0894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
Heart failure (HF) is a commonly encountered clinical entity in the developed world, and is estimated to cost 660m euro annually to the Irish exchequer. Evidence supporting the benefit of multi disciplinary care in reduction of readmission rates has prompted the establishment of specialist HF clinics, resulting in improved medication adherence and early recognition and treatment of mild decompensation, thus averting the need for hospital admission. In contrast, the role of the hospital generalist and the general practitioner in the management of stable HF is under-emphasised despite evidence that optimal medical therapy reduces readmission and its attendant costs. The aim of this survey was to assess knowledge of pharmacotherapeutic options amongst generalists, and identify opportunities for education, in order to further optimise guideline-directed medical therapy while the patient awaits specialist input.
Methods
We distributed a 14 item questionnaire regarding indications for HF medications (as per ESC guidelines) to doctors in medicine and general practice throughout Ireland.
Results
There were 127 responses from 27 centres (117 analysed). Median years of practice was 4. Table 1 depicts the breakdown of clinicians who correctly identified HFrEF as an indication for each of the major drug classes. More than 20% of clinicians at all grades failed to identify HFrEF as an indication for beta blocker therapy. There was a higher level of knowledge amongst junior doctors in the prescription of mineralocorticoid receptor antagonists (p≤0.05) but no statistical difference in knowledge of other drug classes. Only 26% of participants who felt comfortable with initiation and up-titration of beta blockers (N=89) correctly identified an optimal target heart rate of less than 70 beats per minute. Twenty-four percent of respondents (N=28) were unaware of a specialist HF service that catered to their institution. Ninety-seven percent (N=113) felt that their practice would benefit from further education on HF pharmacotherapy.
Conclusion
The high prevalence of HF in Ireland and costs associated with admission for decompensation necessitates a sound knowledge of its management amongst generalists. Results of this survey suggest a need, and indeed a demand, for further education and support surrounding pharmacotherapy of stable heart failure.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- P Murray
- Tallaght University Hospital, Dublin, Ireland
| | | | - V Maher
- Tallaght University Hospital, Dublin, Ireland
| | - D Moore
- Tallaght University Hospital, Dublin, Ireland
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25
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Abstract
Abstract
Background
Cardiovascular disease is implicated in approximately 1 in every 3 deaths occurring in both women and men worldwide. Numerically, it is responsible for more female than male deaths each year, due largely to longer life expectancy amongst women. Consequently, guidelines from the major international bodies recommend against the use of sex as a discriminating factor in the evaluation of chest pain. Still there remains a public perception of excess cardiovascular risk in men, contributing to a delay in the seeking of medical attention by women with symptoms of acute coronary syndrome (ACS). We hypothesise the attendant concern that unconscious gender bias amongst clinicians influences the management of patients presenting with ACS from triage to invasive assessment and treatment.
Aim
To examine the relationship between patient gender and clinical management of ACS.
Methods
We conducted a retrospective cross sectional study of all patients in whom ACS was suspected during a year long period using the laboratory database of a tertiary cardiac referral centre in Ireland. In all patients for whom high sensitivity cardiac troponin T assay was ordered during the full calendar year 2019, age, sex and troponin level were recorded. We determined the likelihood of invasive angiography for male versus female patients after adjustment for age and troponin result.
Results
A total of 30,560 requests for high sensitivity cardiac troponin T (troponin) were made to the laboratory in the year ending December 2019. Excluding 464 for technical and sampling issues, 30,096 assays were included in the analysis. 43.84% (N=13,194) of samples were female and 56.16% (N=16,902) male. These samples were collected from 10,807 patients (5,294 female and 5,513 male). Median age was 58 for females and 57 for males. The upper limit of normal in our institution for serum troponin is <14ng/L and there is no adjustment for sex. 22.01% (N=1,165) of females and 33.39% (N=1,841) of males had at least one troponin level reported above the normal range. Of female patients with at least one troponin above the normal limit, 10.21% (N=119) underwent invasive coronary angiography compared to 18.52% (N=341) of males. Of females in whom all troponin results were normal, 5.84% (N=241) proceeded to invasive angiography versus 9.18% (N=337) of males.
Conclusion
Notwithstanding the limitations of lack of adjustment for risk profile, the results of this analysis demonstrate a higher rate of invasive angiography in males compared with females independently of troponin level. This is in keeping with previous research suggesting a gender gap in the approach of clinicians to ACS, and suggests an unconscious sex-based discrimination when making decisions around diagnosis and treatment. Education regarding the prevalence of coronary atherosclerosis, and interventions to alter the attitudes of clinicians, are some of the interventions suggested to close this gap.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- P Murray
- Tallaght University Hospital, Dublin, Ireland
| | - W M Blake
- St. James's Hospital, Dublin, Ireland
| | - D Ward
- Tallaght University Hospital, Dublin, Ireland
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26
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Marton T, Hargitai B, Hunter K, Pugh M, Murray P. Massive Perivillous Fibrin Deposition and Chronic Histiocytic Intervillositis a Complication of SARS-CoV-2 Infection. Pediatr Dev Pathol 2021; 24:450-454. [PMID: 34082613 DOI: 10.1177/10935266211020723] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
An emerging complication of COVID-19 (SARS-CoV-2) infection is reported. A 23-year-old patient presented with high temperature and reduced fetal movements at 25 + 5/40 weeks of gestation. RT-PCR proved maternal COVID-19 infection. Ultrasound examination confirmed intrauterine death. Placenta histology showed necrosis of the villous trophoblast, associated with Chronic Histiocytic Intervillositis (CHI) and Massive Perivillous Fibrin Deposition (MPFD) with up to 90% - of the intervillous spaces being involved. Immunohistochemistry showed CD68 positive histiocytes in the intervillous spaces and the villous trophoblast was positive for the COVID-19 spike protein. RNA scope signal was indicative of the presence of the viral genome and active viral replication in the villous trophoblastic cells, respectively. MPFD is a gradually developing end-stage disease with various etiology, including autoimmune and alloimmune maternal response to antigens expressed at the feto-maternal interface and frequently accompanies chronic alloimmune villitis or histiocytic intervillositis. Covid-19 infection is associated with similar pattern of histological changes of the placenta leading to placental insufficiency and fetal death. This case report supports maternal- fetal vertical transmission of SARS-CoV-2 virus leading to placental insufficiency and fetal demise. MPFD and CHI appear to be the typical placental histology for SARS-CoV-2 virus infection associated fetal demise.
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Affiliation(s)
- T Marton
- Division of Perinatal Pathology, Department of Cellular Pathology, Birmingham Women's and Children's Hospital, NHS Foundation Trust, Birmingham, UK
| | - B Hargitai
- Division of Perinatal Pathology, Department of Cellular Pathology, Birmingham Women's and Children's Hospital, NHS Foundation Trust, Birmingham, UK
| | - K Hunter
- Institute of Immunology and Immunotherapy, University of Birmingham, UK
| | - M Pugh
- Institute of Immunology and Immunotherapy, University of Birmingham, UK
| | - P Murray
- Institute of Immunology and Immunotherapy, University of Birmingham, UK
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27
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Mousavinejad M, Skidmore S, Barone FG, Tyers P, Pisupati V, Poptani H, Plagge A, Barker RA, Murray P, Taylor A, Hill CJ. Assessing Human Embryonic Stem Cell-Derived Dopaminergic Neuron Progenitor Transplants Using Non-invasive Imaging Techniques. Mol Imaging Biol 2021; 22:1244-1254. [PMID: 32378000 PMCID: PMC7497430 DOI: 10.1007/s11307-020-01499-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
PURPOSE Human pluripotent stem cell (hPSC)-derived dopaminergic neuron progenitor cells (DAPCs) are a potential therapy for Parkinson's disease (PD). However, their intracranial administration raises safety concerns including uncontrolled proliferation, migration and inflammation. Here, we apply a bimodal imaging approach to investigate the fate of DAPC transplants in the rat striatum. PROCEDURES DAPCs co-expressing luciferase and ZsGreen or labelled with micron-sized particles of iron oxide (MPIOs) were transplanted in the striatum of RNU rats (n = 6 per group). DAPCs were tracked in vivo using bioluminescence and magnetic resonance (MR) imaging modalities. RESULTS Transgene silencing in differentiating DAPCs accompanied with signal attenuation due to animal growth rendered the bioluminescence undetectable by week 2 post intrastriatal transplantation. However, MR imaging of MPIO-labelled DAPCs showed that transplanted cells remained at the site of injection for over 120 days. Post-mortem histological analysis of DAPC transplants demonstrated that labelling with either luciferase/ZsGreen or MPIOs did not affect the ability of cells to differentiate into mature dopaminergic neurons. Importantly, labelled cells did not elicit increased glial reactivity compared to non-labelled cells. CONCLUSIONS In summary, our findings support the transplantation of hPSC-derived DAPCs as a safe treatment for PD.
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Affiliation(s)
- M Mousavinejad
- Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Liverpool, L69 3BX, UK
| | - S Skidmore
- Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Liverpool, L69 3BX, UK.,WT-MRC Cambridge Stem Cell Institute, University of Cambridge, Cambridge, UK
| | - F G Barone
- Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Liverpool, L69 3BX, UK
| | - P Tyers
- John van Geest Centre for Brain Repair & Department of Neurology, Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
| | - V Pisupati
- WT-MRC Cambridge Stem Cell Institute, University of Cambridge, Cambridge, UK
| | - H Poptani
- Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Liverpool, L69 3BX, UK
| | - A Plagge
- Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Liverpool, L69 3BX, UK
| | - R A Barker
- WT-MRC Cambridge Stem Cell Institute, University of Cambridge, Cambridge, UK.,John van Geest Centre for Brain Repair & Department of Neurology, Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
| | - P Murray
- Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Liverpool, L69 3BX, UK
| | - A Taylor
- Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Liverpool, L69 3BX, UK.
| | - C J Hill
- Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Liverpool, L69 3BX, UK. .,Centre for Women's Health Research, Department of Women's and Children's Health, Institute of Translational Medicine, University of Liverpool, Liverpool, L8 7SS, UK.
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28
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Chaarani B, Hahn S, Allgaier N, Adise S, Owens MM, Juliano AC, Yuan DK, Loso H, Ivanciu A, Albaugh MD, Dumas J, Mackey S, Laurent J, Ivanova M, Hagler DJ, Cornejo MD, Hatton S, Agrawal A, Aguinaldo L, Ahonen L, Aklin W, Anokhin AP, Arroyo J, Avenevoli S, Babcock D, Bagot K, Baker FC, Banich MT, Barch DM, Bartsch H, Baskin-Sommers A, Bjork JM, Blachman-Demner D, Bloch M, Bogdan R, Bookheimer SY, Breslin F, Brown S, Calabro FJ, Calhoun V, Casey BJ, Chang L, Clark DB, Cloak C, Constable RT, Constable K, Corley R, Cottler LB, Coxe S, Dagher RK, Dale AM, Dapretto M, Delcarmen-Wiggins R, Dick AS, Do EK, Dosenbach NUF, Dowling GJ, Edwards S, Ernst TM, Fair DA, Fan CC, Feczko E, Feldstein-Ewing SW, Florsheim P, Foxe JJ, Freedman EG, Friedman NP, Friedman-Hill S, Fuemmeler BF, Galvan A, Gee DG, Giedd J, Glantz M, Glaser P, Godino J, Gonzalez M, Gonzalez R, Grant S, Gray KM, Haist F, Harms MP, Hawes S, Heath AC, Heeringa S, Heitzeg MM, Hermosillo R, Herting MM, Hettema JM, Hewitt JK, Heyser C, Hoffman E, Howlett K, Huber RS, Huestis MA, Hyde LW, Iacono WG, Infante MA, Irfanoglu O, Isaiah A, Iyengar S, Jacobus J, James R, Jean-Francois B, Jernigan T, Karcher NR, Kaufman A, Kelley B, Kit B, Ksinan A, Kuperman J, Laird AR, Larson C, LeBlanc K, Lessov-Schlagger C, Lever N, Lewis DA, Lisdahl K, Little AR, Lopez M, Luciana M, Luna B, Madden PA, Maes HH, Makowski C, Marshall AT, Mason MJ, Matochik J, McCandliss BD, McGlade E, Montoya I, Morgan G, Morris A, Mulford C, Murray P, Nagel BJ, Neale MC, Neigh G, Nencka A, Noronha A, Nixon SJ, Palmer CE, Pariyadath V, Paulus MP, Pelham WE, Pfefferbaum D, Pierpaoli C, Prescot A, Prouty D, Puttler LI, Rajapaske N, Rapuano KM, Reeves G, Renshaw PF, Riedel MC, Rojas P, de la Rosa M, Rosenberg MD, Ross MJ, Sanchez M, Schirda C, Schloesser D, Schulenberg J, Sher KJ, Sheth C, Shilling PD, Simmons WK, Sowell ER, Speer N, Spittel M, Squeglia LM, Sripada C, Steinberg J, Striley C, Sutherland MT, Tanabe J, Tapert SF, Thompson W, Tomko RL, Uban KA, Vrieze S, Wade NE, Watts R, Weiss S, Wiens BA, Williams OD, Wilbur A, Wing D, Wolff-Hughes D, Yang R, Yurgelun-Todd DA, Zucker RA, Potter A, Garavan HP. Baseline brain function in the preadolescents of the ABCD Study. Nat Neurosci 2021; 24:1176-1186. [PMID: 34099922 PMCID: PMC8947197 DOI: 10.1038/s41593-021-00867-9] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [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] [Received: 12/31/2019] [Accepted: 04/30/2021] [Indexed: 02/05/2023]
Abstract
The Adolescent Brain Cognitive Development (ABCD) Study® is a 10-year longitudinal study of children recruited at ages 9 and 10. A battery of neuroimaging tasks are administered biennially to track neurodevelopment and identify individual differences in brain function. This study reports activation patterns from functional MRI (fMRI) tasks completed at baseline, which were designed to measure cognitive impulse control with a stop signal task (SST; N = 5,547), reward anticipation and receipt with a monetary incentive delay (MID) task (N = 6,657) and working memory and emotion reactivity with an emotional N-back (EN-back) task (N = 6,009). Further, we report the spatial reproducibility of activation patterns by assessing between-group vertex/voxelwise correlations of blood oxygen level-dependent (BOLD) activation. Analyses reveal robust brain activations that are consistent with the published literature, vary across fMRI tasks/contrasts and slightly correlate with individual behavioral performance on the tasks. These results establish the preadolescent brain function baseline, guide interpretation of cross-sectional analyses and will enable the investigation of longitudinal changes during adolescent development.
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Affiliation(s)
- B Chaarani
- Department of Psychiatry, University of Vermont, Burlington, VT, USA.
| | - S Hahn
- Department of Psychiatry, University of Vermont, Burlington, VT, USA
| | - N Allgaier
- Department of Psychiatry, University of Vermont, Burlington, VT, USA
| | - S Adise
- Department of Psychiatry, University of Vermont, Burlington, VT, USA
| | - M M Owens
- Department of Psychiatry, University of Vermont, Burlington, VT, USA
| | - A C Juliano
- Department of Psychiatry, University of Vermont, Burlington, VT, USA
| | - D K Yuan
- Department of Psychiatry, University of Vermont, Burlington, VT, USA
| | - H Loso
- Department of Psychiatry, University of Vermont, Burlington, VT, USA
| | - A Ivanciu
- Department of Psychiatry, University of Vermont, Burlington, VT, USA
| | - M D Albaugh
- Department of Psychiatry, University of Vermont, Burlington, VT, USA
| | - J Dumas
- Department of Psychiatry, University of Vermont, Burlington, VT, USA
| | - S Mackey
- Department of Psychiatry, University of Vermont, Burlington, VT, USA
| | - J Laurent
- Department of Psychiatry, University of Vermont, Burlington, VT, USA
| | - M Ivanova
- Department of Psychiatry, University of Vermont, Burlington, VT, USA
| | - D J Hagler
- University of California, San Diego, La Jolla, CA, USA
| | - M D Cornejo
- Institute of Physics UC, Pontificia Universidad Catolica de Chile, Pontificia, Chile
| | - S Hatton
- University of California, San Diego, La Jolla, CA, USA
| | - A Agrawal
- Department of Psychiatry, Washington University in Saint Louis, St. Louis, MO, USA
| | - L Aguinaldo
- University of California, San Diego, La Jolla, CA, USA
| | - L Ahonen
- University of Pittsburgh, Pittsburgh, PA, USA
| | - W Aklin
- National Institute on Drug Abuse, Bethesda, MD, USA
| | - A P Anokhin
- Department of Psychiatry, Washington University in Saint Louis, St. Louis, MO, USA
| | - J Arroyo
- National Institute on Alcohol Abuse and Alcoholism, Bethesda, MD, USA
| | - S Avenevoli
- National Institute of Mental Health, Bethesda, MD, USA
| | - D Babcock
- National Institute of Neurological Disorders and Stroke, Bethesda, MD, USA
| | - K Bagot
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - F C Baker
- SRI International, Menlo Park, CA, USA
| | - M T Banich
- University of Colorado, Boulder, CO, USA
| | - D M Barch
- Department of Psychiatry, Washington University in Saint Louis, St. Louis, MO, USA
| | - H Bartsch
- Haukeland University Hospital, Bergen, Norway
| | | | - J M Bjork
- Virginia Commonwealth University, Richmond, VA, USA
| | - D Blachman-Demner
- NIH Office of Behavioral and Social Sciences Research, Bethesda, MD, USA
| | - M Bloch
- National Cancer Institute, Bethesda, MD, USA
| | - R Bogdan
- Department of Psychiatry, Washington University in Saint Louis, St. Louis, MO, USA
| | | | - F Breslin
- Laureate Institute for Brain Research, Tulsa, OK, USA
| | - S Brown
- University of California, San Diego, La Jolla, CA, USA
| | - F J Calabro
- University of Pittsburgh, Pittsburgh, PA, USA
| | - V Calhoun
- University of Colorado, Boulder, CO, USA
- Tri-institutional Center for Translational Research in Neuroimaging and Data Science, Georgia State University, Georgia Institute of Technology, Emory University, Atlanta, GA, USA
| | | | - L Chang
- University of Maryland School of Medicine, Baltimore, MD, USA
| | - D B Clark
- University of Pittsburgh, Pittsburgh, PA, USA
| | - C Cloak
- University of Maryland School of Medicine, Baltimore, MD, USA
| | | | - K Constable
- National Institute on Drug Abuse, Bethesda, MD, USA
| | - R Corley
- University of Colorado, Boulder, CO, USA
| | | | - S Coxe
- Florida International University, Miami, FL, USA
| | - R K Dagher
- National Institute on Minority Health and Health Disparities, Bethesda, MD, USA
| | - A M Dale
- University of California, San Diego, La Jolla, CA, USA
| | - M Dapretto
- University of California, Los Angeles, CA, USA
| | | | - A S Dick
- Florida International University, Miami, FL, USA
| | - E K Do
- Virginia Commonwealth University, Richmond, VA, USA
| | - N U F Dosenbach
- Department of Psychiatry, Washington University in Saint Louis, St. Louis, MO, USA
| | - G J Dowling
- National Institute on Drug Abuse, Bethesda, MD, USA
| | - S Edwards
- University of Maryland School of Medicine, Baltimore, MD, USA
| | - T M Ernst
- University of Maryland School of Medicine, Baltimore, MD, USA
| | - D A Fair
- Oregon Health & Science University, Portland, OR, USA
| | - C C Fan
- Department of Psychiatry, Washington University in Saint Louis, St. Louis, MO, USA
| | - E Feczko
- Oregon Health & Science University, Portland, OR, USA
| | | | | | - J J Foxe
- University of Rochester, Rochester, NY, USA
| | | | | | | | | | - A Galvan
- University of California, Los Angeles, CA, USA
| | - D G Gee
- Yale University, New Haven, CT, USA
| | - J Giedd
- University of California, San Diego, La Jolla, CA, USA
| | - M Glantz
- National Institute on Drug Abuse, Bethesda, MD, USA
| | - P Glaser
- Department of Psychiatry, Washington University in Saint Louis, St. Louis, MO, USA
| | - J Godino
- University of California, San Diego, La Jolla, CA, USA
| | - M Gonzalez
- Children's Hospital Los Angeles, Los Angeles, CA, USA
| | - R Gonzalez
- Florida International University, Miami, FL, USA
| | - S Grant
- National Institute on Drug Abuse, Bethesda, MD, USA
| | - K M Gray
- Medical University of South Carolina, Charleston, SC, USA
| | - F Haist
- University of California, San Diego, La Jolla, CA, USA
| | - M P Harms
- Department of Psychiatry, Washington University in Saint Louis, St. Louis, MO, USA
| | - S Hawes
- Florida International University, Miami, FL, USA
| | - A C Heath
- University of California, San Diego, La Jolla, CA, USA
| | - S Heeringa
- University of Michigan, Ann Arbor, MI, USA
| | | | - R Hermosillo
- Oregon Health & Science University, Portland, OR, USA
| | - M M Herting
- University of Southern California, Los Angeles, CA, USA
| | - J M Hettema
- Virginia Commonwealth University, Richmond, VA, USA
| | - J K Hewitt
- University of Colorado, Boulder, CO, USA
| | - C Heyser
- University of California, San Diego, La Jolla, CA, USA
| | - E Hoffman
- National Institute on Drug Abuse, Bethesda, MD, USA
| | - K Howlett
- National Institute on Drug Abuse, Bethesda, MD, USA
| | - R S Huber
- University of Utah, Salt Lake City, UT, USA
| | - M A Huestis
- Thomas Jefferson University, Philadelphia, PA, USA
| | - L W Hyde
- University of Michigan, Ann Arbor, MI, USA
| | - W G Iacono
- University of Minnesota, Minneapolis, MN, USA
| | - M A Infante
- University of California, San Diego, La Jolla, CA, USA
| | - O Irfanoglu
- National Institute of Biomedical Imaging and Bioengineering, Bethesda, MD, USA
| | - A Isaiah
- University of Maryland School of Medicine, Baltimore, MD, USA
| | - S Iyengar
- National Endowment for the Arts, Washington DC, USA
| | - J Jacobus
- University of California, San Diego, La Jolla, CA, USA
| | - R James
- Virginia Commonwealth University, Richmond, VA, USA
| | - B Jean-Francois
- National Institute on Minority Health and Health Disparities, Bethesda, MD, USA
| | - T Jernigan
- University of California, San Diego, La Jolla, CA, USA
| | - N R Karcher
- Department of Psychiatry, Washington University in Saint Louis, St. Louis, MO, USA
| | - A Kaufman
- National Cancer Institute, Bethesda, MD, USA
| | - B Kelley
- National Institute of Justice, Washington DC, USA
| | - B Kit
- National Heart, Lung, and Blood Institute, Bethesda, MD, USA
| | - A Ksinan
- Virginia Commonwealth University, Richmond, VA, USA
| | - J Kuperman
- University of California, San Diego, La Jolla, CA, USA
| | - A R Laird
- Florida International University, Miami, FL, USA
| | - C Larson
- University of Wisconsin, Milwaukee, WI, USA
| | - K LeBlanc
- National Institute on Drug Abuse, Bethesda, MD, USA
| | - C Lessov-Schlagger
- Department of Psychiatry, Washington University in Saint Louis, St. Louis, MO, USA
| | - N Lever
- University of Maryland School of Medicine, Baltimore, MD, USA
| | - D A Lewis
- University of Pittsburgh, Pittsburgh, PA, USA
| | - K Lisdahl
- University of Wisconsin, Milwaukee, WI, USA
| | - A R Little
- National Institute on Drug Abuse, Bethesda, MD, USA
| | - M Lopez
- National Institute on Drug Abuse, Bethesda, MD, USA
| | - M Luciana
- University of Minnesota, Minneapolis, MN, USA
| | - B Luna
- University of Pittsburgh, Pittsburgh, PA, USA
| | - P A Madden
- Department of Psychiatry, Washington University in Saint Louis, St. Louis, MO, USA
| | - H H Maes
- Virginia Commonwealth University, Richmond, VA, USA
| | - C Makowski
- University of California, San Diego, La Jolla, CA, USA
| | - A T Marshall
- Children's Hospital Los Angeles, Los Angeles, CA, USA
| | - M J Mason
- University of Tennessee, Knoxville, TN, USA
| | - J Matochik
- National Institute on Alcohol Abuse and Alcoholism, Bethesda, MD, USA
| | | | - E McGlade
- University of Utah, Salt Lake City, UT, USA
| | - I Montoya
- National Institute on Drug Abuse, Bethesda, MD, USA
| | - G Morgan
- National Cancer Institute, Bethesda, MD, USA
| | - A Morris
- Oklahoma State University, Stillwater, OK, USA
| | - C Mulford
- National Institute on Drug Abuse, Bethesda, MD, USA
| | - P Murray
- National Institute on Alcohol Abuse and Alcoholism, Bethesda, MD, USA
| | - B J Nagel
- Oregon Health & Science University, Portland, OR, USA
| | - M C Neale
- Virginia Commonwealth University, Richmond, VA, USA
| | - G Neigh
- Virginia Commonwealth University, Richmond, VA, USA
| | - A Nencka
- Medical College of Wisconsin, Milwaukee, WI, USA
| | - A Noronha
- National Institute on Alcohol Abuse and Alcoholism, Bethesda, MD, USA
| | - S J Nixon
- University of Florida, Gainesville, FL, USA
| | - C E Palmer
- University of California, San Diego, La Jolla, CA, USA
| | - V Pariyadath
- National Institute on Drug Abuse, Bethesda, MD, USA
| | - M P Paulus
- Laureate Institute for Brain Research, Tulsa, OK, USA
| | - W E Pelham
- Florida International University, Miami, FL, USA
| | | | - C Pierpaoli
- Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, MD, USA
| | - A Prescot
- University of Utah, Salt Lake City, UT, USA
| | - D Prouty
- SRI International, Menlo Park, CA, USA
| | | | - N Rajapaske
- National Institute on Minority Health and Health Disparities, Bethesda, MD, USA
| | | | - G Reeves
- University of Maryland School of Medicine, Baltimore, MD, USA
| | | | - M C Riedel
- Florida International University, Miami, FL, USA
| | - P Rojas
- Florida International University, Miami, FL, USA
| | - M de la Rosa
- Florida International University, Miami, FL, USA
| | | | - M J Ross
- University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - M Sanchez
- Florida International University, Miami, FL, USA
| | - C Schirda
- University of Pittsburgh, Pittsburgh, PA, USA
| | - D Schloesser
- NIH Office of Behavioral and Social Sciences Research, Bethesda, MD, USA
| | | | - K J Sher
- University of Missouri, Columbia, MO, USA
| | - C Sheth
- University of Utah, Salt Lake City, UT, USA
| | - P D Shilling
- University of California, San Diego, La Jolla, CA, USA
| | - W K Simmons
- Laureate Institute for Brain Research, Tulsa, OK, USA
| | - E R Sowell
- Children's Hospital Los Angeles, Los Angeles, CA, USA
| | - N Speer
- University of Colorado, Boulder, CO, USA
| | - M Spittel
- NIH Office of Behavioral and Social Sciences Research, Bethesda, MD, USA
| | - L M Squeglia
- Medical University of South Carolina, Charleston, SC, USA
| | - C Sripada
- University of Michigan, Ann Arbor, MI, USA
| | - J Steinberg
- Virginia Commonwealth University, Richmond, VA, USA
| | - C Striley
- University of Florida, Gainesville, FL, USA
| | | | - J Tanabe
- University of Colorado, Boulder, CO, USA
| | - S F Tapert
- University of California, San Diego, La Jolla, CA, USA
| | - W Thompson
- University of California, San Diego, La Jolla, CA, USA
| | - R L Tomko
- Medical University of South Carolina, Charleston, SC, USA
| | - K A Uban
- University of California, Irvine, CA, USA
| | - S Vrieze
- University of Minnesota, Minneapolis, MN, USA
| | - N E Wade
- University of California, San Diego, La Jolla, CA, USA
| | - R Watts
- Yale University, New Haven, CT, USA
| | - S Weiss
- National Institute on Drug Abuse, Bethesda, MD, USA
| | - B A Wiens
- University of Florida, Gainesville, FL, USA
| | - O D Williams
- Florida International University, Miami, FL, USA
| | - A Wilbur
- SRI International, Menlo Park, CA, USA
| | - D Wing
- University of California, San Diego, La Jolla, CA, USA
| | - D Wolff-Hughes
- NIH Office of Behavioral and Social Sciences Research, Bethesda, MD, USA
| | - R Yang
- University of California, San Diego, La Jolla, CA, USA
| | | | - R A Zucker
- University of Michigan, Ann Arbor, MI, USA
| | - A Potter
- Department of Psychiatry, University of Vermont, Burlington, VT, USA
| | - H P Garavan
- Department of Psychiatry, University of Vermont, Burlington, VT, USA.
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David CAW, Del Castillo Busto ME, Cuello-Nuñez S, Goenaga-Infante H, Barrow M, Fernig DG, Murray P, Rosseinsky MJ, Owen A, Liptrott NJ. Assessment of changes in autophagic vesicles in human immune cell lines exposed to nano particles. Cell Biosci 2021; 11:133. [PMID: 34271993 PMCID: PMC8283997 DOI: 10.1186/s13578-021-00648-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Accepted: 07/05/2021] [Indexed: 11/21/2022] Open
Abstract
Background Safe and rational development of nanomaterials for clinical translation requires the assessment of potential biocompatibility. Autophagy, a critical homeostatic pathway intrinsically linked to cellular health and inflammation, has been shown to be affected by nanomaterials. It is, therefore, important to be able to assess possible interactions of nanomaterials with autophagic processes. Results CEM (T cell), Raji (B lymphocyte), and THP-1 (human monocyte) cell lines were subject to treatment with rapamycin and chloroquine, known to affect the autophagic process, in order to evaluate cell line-specific responses. Flow cytometric quantification of a fluorescent autophagic vacuole stain showed that maximum observable effects (105%, 446%, and 149% of negative controls) were achieved at different exposure durations (8, 6, and 24 h for CEM, Raji, and THP-1, respectively). THP-1 was subsequently utilised as a model to assess the autophagic impact of a small library of nanomaterials. Association was observed between hydrodynamic size and autophagic impact (r2 = 0.11, p = 0.004). An ELISA for p62 confirmed the greatest impact by 10 nm silver nanoparticles, abolishing p62, with 50 nm silica and 180 nm polystyrene also lowering p62 to a significant degree (50%, 74%, and 55%, respectively, p < 0.05). Conclusions This data further supports the potential for a variety of nanomaterials to interfere with autophagic processes which, in turn, may result in altered cellular function and viability. The association of particle size with impact on autophagy now warrants further investigation. Graphic abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s13578-021-00648-8.
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Affiliation(s)
- Christopher A W David
- Immunocompatibility Group, Department of Molecular and Clinical Pharmacology, Institute of Translational Medicine, University of Liverpool, Liverpool, UK.,Centre of Excellence in Long-Acting Therapeutics (CELT), University of Liverpool, Liverpool, UK
| | | | - Susana Cuello-Nuñez
- National Measurement Institute, LGC Limited, Queens Road, Teddington, Middlesex, TW11 0LY, UK
| | - Heidi Goenaga-Infante
- National Measurement Institute, LGC Limited, Queens Road, Teddington, Middlesex, TW11 0LY, UK
| | - Michael Barrow
- Department of Chemistry, University of Liverpool, Liverpool, UK
| | - David G Fernig
- Department of Biochemistry, Institute of Integrative Biology, University of Liverpool, Liverpool, UK
| | - Patricia Murray
- Department of Cellular and Molecular Physiology, University of Liverpool, Liverpool, UK.,Centre for Preclinical Imaging, University of Liverpool, Liverpool, UK
| | | | - Andrew Owen
- Centre of Excellence in Long-Acting Therapeutics (CELT), University of Liverpool, Liverpool, UK
| | - Neill J Liptrott
- Immunocompatibility Group, Department of Molecular and Clinical Pharmacology, Institute of Translational Medicine, University of Liverpool, Liverpool, UK. .,Centre of Excellence in Long-Acting Therapeutics (CELT), University of Liverpool, Liverpool, UK.
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Murray P, McCracken M, Levy A, Lathi R, Monseur B. FAMILY BUILDING THROUGH “EMBRYO ADOPTION”: RECIPIENT QUALIFICATIONS, ORGANIZATION CHARACTERISTICS, AND LGBTQ+/SINGLE WEBSITE CONTENT. Fertil Steril 2021. [DOI: 10.1016/j.fertnstert.2021.05.044] [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: 11/26/2022]
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31
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Langhorne C, McMichael L, Hoy J, Kopp S, Murray P. Haematology and serum biochemistry results for anaesthetised northern brown bandicoots (Isoodon macrourus) in south east Queensland. Aust Vet J 2021; 99:408-411. [PMID: 34169506 DOI: 10.1111/avj.13098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 05/18/2020] [Revised: 11/04/2020] [Accepted: 05/29/2021] [Indexed: 11/30/2022]
Abstract
Bandicoots are terrestrial marsupials, endemic to Australia and Papua New Guinea. Despite drastic declines in several bandicoot species since European settlement, the northern brown bandicoot (Isoodon macrourus) remains common in many areas of Australia. It inhabits native environments as well as anthropogenic landscapes. This study presents comprehensive haematologic and serum biochemical results for 39 anaesthetised, clinically healthy, wild-caught, adult northern brown bandicoots in south east Queensland, Australia. The bloodwork profile of a single animal with chronic prostatic abscessation highlights that haematology and clinical chemistry can provide useful biomarkers for identifying clinical disease in bandicoots. Comparisons of haematologic and biochemical values between sexes of the northern brown bandicoot revealed significant differences for eosinophils, alkaline phosphatase and total bilirubin. At the individual animal level, the ranges established in this study are a guide for monitoring health and disease status; however, they also have much wider applications in population health and ecological research.
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Affiliation(s)
- C Langhorne
- School of Veterinary Science, The University of Queensland, Gatton Campus, Gatton, Queensland, 4343, Australia.,Hidden Vale Wildlife Centre, Grandchester, Queensland, 4340, Australia
| | - L McMichael
- School of Veterinary Science, The University of Queensland, Gatton Campus, Gatton, Queensland, 4343, Australia
| | - J Hoy
- Hidden Vale Wildlife Centre, Grandchester, Queensland, 4340, Australia
| | - S Kopp
- School of Veterinary Science, The University of Queensland, Gatton Campus, Gatton, Queensland, 4343, Australia
| | - P Murray
- School of Veterinary Science, The University of Queensland, Gatton Campus, Gatton, Queensland, 4343, Australia.,School of Sciences, University of Southern Queensland, Darling Heights, Queensland, 4350, Australia
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32
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Minhas AS, Sharkey J, Randtke EA, Murray P, Wilm B, Pagel MD, Poptani H. Measuring Kidney Perfusion, pH, and Renal Clearance Consecutively Using MRI and Multispectral Optoacoustic Tomography. Mol Imaging Biol 2021; 22:494-503. [PMID: 31529408 PMCID: PMC7250811 DOI: 10.1007/s11307-019-01429-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Purpose: To establish multi-modal imaging for the assessment of kidney pH, perfusion, and clearance rate using magnetic resonance imaging (MRI) and multispectral optoacoustic tomography (MSOT) in healthy mice. Kidney pH and perfusion values were measured on a pixel-by-pixel basis using the MRI acidoCEST and FAIR-EPI methods. Kidney filtration rate was measured by analyzing the renal clearance rate of IRdye 800 using MSOT. To test the effect of one imaging method on the other, a set of 3 animals were imaged with MSOT followed by MRI, and a second set of 3 animals were imaged with MRI followed by MSOT. In a subsequent study, the reproducibility of pH, perfusion, and renal clearance measurements were tested by imaging 4 animals twice, separated by 4 days. The contrast agents used for acidoCEST based pH measurements influenced the results of MSOT. Specifically, the exponential decay time from the kidney cortex, as measured by MSOT, was significantly altered when MRI was performed prior to MSOT. However, no significant difference in the cortex to pelvis area under the curve (AUC) was noted. When the order of experiments was reversed, no significant differences were noted in the pH or perfusion values. Reproducibility measurements demonstrated similar pH and cortex to pelvis AUC; however, perfusion values were significantly different with the cortex values being higher and the pelvic values being lower in the second imaging time. We demonstrate that using a combination of MRI and MSOT, physiological measurements of pH, blood flow, and clearance rates can be measured in the mouse kidney in the same imaging session.
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Affiliation(s)
- Atul S Minhas
- Center for Pre-Clinical Imaging, Department of Cellular and Molecular Physiology, University of Liverpool, Crown Street, Liverpool, Merseyside, UK.,School of Engineering, Macquarie University, Sydney, NSW, Australia
| | - Jack Sharkey
- Center for Pre-Clinical Imaging, Department of Cellular and Molecular Physiology, University of Liverpool, Crown Street, Liverpool, Merseyside, UK
| | - Edward A Randtke
- Department of Medical Imaging, University of Arizona, Tucson, AZ, USA
| | - Patricia Murray
- Center for Pre-Clinical Imaging, Department of Cellular and Molecular Physiology, University of Liverpool, Crown Street, Liverpool, Merseyside, UK
| | - Bettina Wilm
- Center for Pre-Clinical Imaging, Department of Cellular and Molecular Physiology, University of Liverpool, Crown Street, Liverpool, Merseyside, UK
| | | | - Harish Poptani
- Center for Pre-Clinical Imaging, Department of Cellular and Molecular Physiology, University of Liverpool, Crown Street, Liverpool, Merseyside, UK.
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33
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Mihajluk K, Simms C, Reay M, Madureira PA, Howarth A, Murray P, Nasser S, Duckworth CA, Pritchard DM, Pilkington GJ, Hill R. Retraction notice to " IP1867B suppresses the Insulin-like Growth Factor 1 Receptor (IGF1R) ablating epidermal growth factor receptor inhibitor resistance in adult high grade gliomas" [Canc. Lett., 458 (2019) pages 29-38]. Cancer Lett 2021; 507:39. [PMID: 33743517 DOI: 10.1016/j.canlet.2021.03.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- K Mihajluk
- Brain Tumour Research Centre, Institute of Biomedical and Biomolecular Sciences, IBBS, University of Portsmouth, PO1 2DT, UK
| | - C Simms
- Brain Tumour Research Centre, Institute of Biomedical and Biomolecular Sciences, IBBS, University of Portsmouth, PO1 2DT, UK
| | - M Reay
- Brain Tumour Research Centre, Institute of Biomedical and Biomolecular Sciences, IBBS, University of Portsmouth, PO1 2DT, UK
| | - P A Madureira
- Centre for Biomedical Research (CBMR), University of Algarve, Campus of Gambelas, Building 8, Room 3.4, 8005-139, Faro, Portugal
| | - A Howarth
- Brain Tumour Research Centre, Institute of Biomedical and Biomolecular Sciences, IBBS, University of Portsmouth, PO1 2DT, UK
| | - P Murray
- Brain Tumour Research Centre, Institute of Biomedical and Biomolecular Sciences, IBBS, University of Portsmouth, PO1 2DT, UK
| | - S Nasser
- Brain Tumour Research Centre, Institute of Biomedical and Biomolecular Sciences, IBBS, University of Portsmouth, PO1 2DT, UK
| | - C A Duckworth
- Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, L69 3GE, UK
| | - D M Pritchard
- Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, L69 3GE, UK
| | - G J Pilkington
- Brain Tumour Research Centre, Institute of Biomedical and Biomolecular Sciences, IBBS, University of Portsmouth, PO1 2DT, UK
| | - R Hill
- Brain Tumour Research Centre, Institute of Biomedical and Biomolecular Sciences, IBBS, University of Portsmouth, PO1 2DT, UK
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Yeong K, Santiapillai J, Arumainayagam BN, Murray P, Tadtayev S. 63 Nocturia—An Underappreciated “Symptom” of Obstructive Sleep Apnoea? Age Ageing 2021. [DOI: 10.1093/ageing/afab030.24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Nocturia (>2 per night) is the most frequent cause of disturbed sleep in older people. Poor sleep results in reduced health related QoL, and is linked to the development of cognitive impairment. Nocturia can result in an increase risk of falls and fractures, and is also an independent risk factor for mortality.
The prevalence of norturia is high in the elderly, and it has been reported to be around 77.1% in elderly women and 93% in men. Historically, this bothersome symptom is thought to be mainly a result of bladder outflow obstruction due to prostatic hypertrophy or overactive bladder. More recently, nocturia has been associated witsh nocturnal polyuria (NPu) and obstructive sleep apnoea (OSA). The relationship between OSA and NPu is not fully understood but it is thought that the negative intrathoracic pressure generated by OSA causes an increase in Atrial Natriuretic Peptide (ANP) secretion, resulting in NPu.
Nocturia is highly prevalent in patients with severe OSA. However, patients are usually unaware that they have sleep apnoea, and are therefore more likely to present to urology or geriatric services. It is important that OSA is not overlooked in these clinics as intervention with CPAP is highly effective in reducing symptoms.
Here, we present the result of using the STOP-Bang questionnaire in 71 consecutive patients presenting to our urology service with nocturia. The average age was 73 years (range 34-88), male-to-female ratio 14:1 and median nocturia frequency of 4. 42 patients were at risk of undiagnosed sleep apnoea (median STOP-Bang Score of 5)—35 were referred for sleep studies, 4 patients declined and 3 patients were not referred. Overall, 31 out of 35 sleep studies (88.6%) demonstrated the presence of OSA; of these 23 (74.2%) confirmed moderate or severe OSA. All patients with OSA were seen and treated by the respiratory service. Overall, median nocturia frequency decreased from 4 to 1 across the whole cohort, from a combination of CPAP therapy, bladder outlet procedures and desmopressin.
Conclusion
At least a third of patients (32%) with bothersome nocturia have an undiagnosed clinically-significant OSA. Identification of OSA improves outcomes across the whole cohort, because nocturia in patients without OSA is more likely to respond to bladder outlet procedures and desmopressin.
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Affiliation(s)
- K Yeong
- Ashford and St Peter’s Hospitals NHS Foundation Trust
| | | | | | - P Murray
- Ashford and St Peter’s Hospitals NHS Foundation Trust
| | - S Tadtayev
- Ashford and St Peter’s Hospitals NHS Foundation Trust
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35
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Hatton N, Saha A, Beasley M, Franks K, Clarke K, Jain P, Teo M, Murray P, Lilley J, Dickinson P. MA03.09 Can Clinical Variables be used to Provide Better Follow up in Stereotactic Ablative Radiotherapy (SABR) Treated Lung Cancers? J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.220] [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]
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36
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Iyizoba-Ebozue Z, Murray LJ, Ramasamy S, Sen M, Murray P, Cardale K, Dyker K, Prestwich RJD. Radiotherapy for Oropharyngeal Carcinoma With an Uninvolved Contralateral Neck: The Safety of Omission of Contralateral High Level II and Retropharyngeal Lymph Nodes From Elective Target Volumes. Clin Oncol (R Coll Radiol) 2020; 33:331-339. [PMID: 33358282 DOI: 10.1016/j.clon.2020.12.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 09/23/2020] [Revised: 11/05/2020] [Accepted: 12/07/2020] [Indexed: 11/26/2022]
Abstract
AIMS To analyse outcomes and patterns of failure in patients with oropharyngeal carcinoma (OPC) treated with definitive volumetric modulated arc therapy with omission of contralateral high level II lymph nodes (HLII) and retropharyngeal lymph nodes (RPLN) in the contralateral uninvolved neck. MATERIALS AND METHODS Patients with OPC treated between January 2016 and July 2019 were retrospectively identified. In the absence of contralateral neck disease, institutional protocols allowed omission of contralateral HLII and contralateral RPLN in the additional absence of ipsilateral RPLN, soft palate/posterior pharyngeal wall primary. RESULTS In total, 238 patients with OPC and an uninvolved contralateral neck received definitive (chemo)radiotherapy with bilateral neck treatment. The median follow-up was 30.6 months. Two-year local control, regional control and overall survival were 91.0, 91.6 and 86.5%, respectively. Contralateral HLII were omitted in 159/238 (66.8%) patients; this included 106 patients in whom the primary tumour was at/crossed the midline. The contralateral RPLN region was omitted from elective target volumes for 175/238 (73.5%); this included 114 patients with a primary tumour at/crossed the midline. The mean contralateral parotid dose when contralateral HLII and RPLN were both omitted was 24.4 Gy, compared with 28.3 Gy without HLII/RPLN omission (P < 0.001). Regional progression occurred in 18/238 (7.6%) patients, all involving the ipsilateral neck with one bilateral. There were no recurrences in the contralateral HLII or RPLN regions. CONCLUSION In patients with OPC and an uninvolved contralateral neck receiving bilateral (chemo)radiotherapy, the omission of contralateral RPLN and HLII from elective target volumes was safe and could lead to reduced contralateral parotid doses.
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Affiliation(s)
| | - L J Murray
- Department of Clinical Oncology, Leeds Cancer Centre, Leeds, UK; Leeds Institute of Medical Research at St James's, University of Leeds, UK
| | - S Ramasamy
- Department of Clinical Oncology, Leeds Cancer Centre, Leeds, UK
| | - M Sen
- Department of Clinical Oncology, Leeds Cancer Centre, Leeds, UK
| | - P Murray
- Department of Clinical Oncology, Leeds Cancer Centre, Leeds, UK
| | - K Cardale
- Department of Clinical Oncology, Leeds Cancer Centre, Leeds, UK
| | - K Dyker
- Department of Clinical Oncology, Leeds Cancer Centre, Leeds, UK
| | - R J D Prestwich
- Department of Clinical Oncology, Leeds Cancer Centre, Leeds, UK.
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Sun F, Jain P, Murray P, Clarke K, Dickinson P, Teo M, Saha A, Franks K. PO-1017: Poor Diffusing Capacity for Carbon Monoxide (DLCO) is associated with worse survival post SABR. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)01034-3] [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: 10/22/2022]
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38
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Littlejohns A, Janjua T, Murray P, Jain P, Clarke K, Dickinson P, Teo M, Saha A, Franks K, Sun F. PO-1016: Efficacy and safety profile of Stereotactic Ablative Radiotherapy (SABR) for multiple lung primaries. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)01033-1] [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: 10/22/2022]
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39
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Saha A, Hatton N, Beasley M, Franks K, Jain P, Teo M, Clarke K, Dickinson P, Murray P, Lilley J. PO-1007: Predictors of radiation pneumonitis in early stage lung cancer treated with SABR. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)01024-0] [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: 10/22/2022]
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40
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Smith IM, Waddell C, Ungar WJ, den Otter J, Murray P, Vezina F, D'Entremont B, Flanagan HE, Garon N. Preschool autism services: A tale of two Canadian provinces and the implications for policy. Paediatr Child Health 2020; 26:145-148. [PMID: 33936332 DOI: 10.1093/pch/pxaa097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 03/24/2020] [Accepted: 07/22/2020] [Indexed: 11/13/2022] Open
Abstract
For children with autism spectrum disorder (ASD), a lifelong neurodevelopmental condition, assessment and treatment services vary widely across Canada-potentially creating inequities. To highlight this, the Preschool Autism Treatment Impact study compared children's services and outcomes in New Brunswick (NB) and Nova Scotia (NS). Diagnostic practices, service delivery models, wait times, and treatment approaches differed, as did children's 1-year outcomes and costs for families and the public sector. Considering NB and NS strengths, we suggest that an optimal system would include: rapid access to high-quality diagnostic and intervention services; adherence to research-informed practice guidelines; interventions to enhance parents' skills and self-efficacy; and measures to minimize financial burdens for families. Our results also suggest that provinces/territories must do more to ensure equitable access to effective services, including sharing and reporting on national comparative data. Canadian children with ASD deserve access to effective and consistent services, no matter where they live.
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Affiliation(s)
- Isabel M Smith
- Department of Pediatrics, Dalhousie University, Halifax, Nova Scotia.,Department of Psychology & Neuroscience, Dalhousie University, Halifax, Nova Scotia.,Autism Research Centre, IWK Health Centre, Halifax, Nova Scotia
| | - Charlotte Waddell
- Faculty of Health Sciences, Simon Fraser University, Burnaby, British Columbia
| | - Wendy J Ungar
- Hospital for Sick Children Research Institute, Toronto, Ontario.,Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario
| | - Jeffrey den Otter
- Department of Education and Early Childhood Development, Government of New Brunswick, Fredericton, New Brunswick
| | - Patricia Murray
- Department of Health and Wellness, Government of Nova Scotia, Halifax, Nova Scotia
| | - Francine Vezina
- Health Promotion and Mental Health & Addictions, Department of Health and Wellness, Government of Nova Scotia, Halifax, Nova Scotia
| | - Barbara D'Entremont
- Department of Psychology, University of New Brunswick, Fredericton, New Brunswick
| | | | - Nancy Garon
- Department of Psychology, Mount Allison University, Sackville, New Brunswick
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Parikh S, Jain P, Clarke K, Franks K, Teo M, Dickinson P, Young A, Murray P. 1378P Is 30-day mortality after systemic anticancer therapy in lung cancer in the era of varied treatments still relevant? Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.1692] [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: 11/28/2022] Open
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Taylor A, Sharkey J, Harwood R, Scarfe L, Barrow M, Rosseinsky MJ, Adams DJ, Wilm B, Murray P. Multimodal Imaging Techniques Show Differences in Homing Capacity Between Mesenchymal Stromal Cells and Macrophages in Mouse Renal Injury Models. Mol Imaging Biol 2020; 22:904-913. [PMID: 31823201 PMCID: PMC7343735 DOI: 10.1007/s11307-019-01458-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE The question of whether mesenchymal stromal cells (MSCs) home to injured kidneys remains a contested issue. To try and understand the basis for contradictory findings reported in the literature, our purpose here was to investigate whether MSC homing capacity is influenced by administration route, the type of injury model used, and/or the presence of exogenous macrophages. PROCEDURES To assess the viability, whole-body biodistribution, and intra-renal biodistribution of MSCs, we used a multimodal imaging strategy comprising bioluminescence and magnetic resonance imaging. The effect of administration route (venous or arterial) on the ability of MSCs to home to injured renal tissue, and persist there, was assessed in a glomerular injury model (induced by the nephrotoxicant, Adriamycin) and a tubular injury model induced by ischaemia-reperfusion injury (IRI). Exogenous macrophages were used as a positive control because these cells are known to home to injured mouse kidneys. To assess whether the homing capacity of MSCs can be influenced by the presence of exogenous macrophages, we used a dual-bioluminescence strategy that allowed the whole-body biodistribution of the two cell types to be monitored simultaneously in individual animals. RESULTS Following intravenous administration, no MSCs were detected in the kidneys, irrespective of whether the mice had been subjected to renal injury. After arterial administration via the left cardiac ventricle, MSCs transiently populated the kidneys, but no preferential homing or persistence was observed in injured renal tissue after unilateral IRI. An exception was when MSCs were co-administered with exogenous macrophages; here, we observed some homing of MSCs to the injured kidney. CONCLUSIONS Our findings strongly suggest that MSCs do not home to injured kidneys.
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Affiliation(s)
- Arthur Taylor
- Department of Cellular and Molecular Physiology, University of Liverpool, Liverpool, L69 3BX, UK
- Centre for Preclinical Imaging, University of Liverpool, Liverpool, UK
| | - Jack Sharkey
- Department of Cellular and Molecular Physiology, University of Liverpool, Liverpool, L69 3BX, UK
- Centre for Preclinical Imaging, University of Liverpool, Liverpool, UK
| | - Rachel Harwood
- Department of Cellular and Molecular Physiology, University of Liverpool, Liverpool, L69 3BX, UK
- Centre for Preclinical Imaging, University of Liverpool, Liverpool, UK
| | - Lauren Scarfe
- Department of Cellular and Molecular Physiology, University of Liverpool, Liverpool, L69 3BX, UK
- Centre for Preclinical Imaging, University of Liverpool, Liverpool, UK
| | - Michael Barrow
- Department of Chemistry, University of Liverpool, Liverpool, UK
| | | | - Dave J Adams
- School of Chemistry, College of Science and Engineering, University of Glasgow, Glasgow, G12 8QQ, UK
| | - Bettina Wilm
- Department of Cellular and Molecular Physiology, University of Liverpool, Liverpool, L69 3BX, UK
- Centre for Preclinical Imaging, University of Liverpool, Liverpool, UK
| | - Patricia Murray
- Department of Cellular and Molecular Physiology, University of Liverpool, Liverpool, L69 3BX, UK.
- Centre for Preclinical Imaging, University of Liverpool, Liverpool, UK.
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Yang Y, Fryer C, Sharkey J, Thomas A, Wais U, Jackson AW, Wilm B, Murray P, Zhang H. Perylene Diimide Nanoprobes for In Vivo Tracking of Mesenchymal Stromal Cells Using Photoacoustic Imaging. ACS Appl Mater Interfaces 2020; 12:27930-27939. [PMID: 32463217 DOI: 10.1021/acsami.0c03857] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Noninvasive bioimaging techniques are critical for assessing the biodistribution of cellular therapies longitudinally. Among them, photoacoustic imaging (PAI) can generate high-resolution images with a tissue penetration depth of ∼4 cm. However, it is essential and still highly challenging to develop stable and efficient near-infrared (NIR) probes with low toxicity for PAI. We report here the preparation and use of perylene diimide derivative (PDI) with NIR absorbance (around 700 nm) as nanoprobes for tracking mesenchymal stromal cells (MSCs) in mice. Employing an in-house synthesized star hyperbranched polymer as a stabilizer is the key to the formation of stable PDI nanoparticles with low toxicity and high uptake by the MSCs. The PDI nanoparticles remain within the MSCs as demonstrated by in vitro and in vivo assessments. The PDI-labeled MSCs injected subcutaneously on the flanks of the mice are clearly visualized with PAI up to 11 days postadministration. Furthermore, bioluminescence imaging of PDI-labeled luciferase-expressing MSCs confirms that the administered cells remain viable for the duration of the experiment. These PDI nanoprobes thus have good potential for tracking administered cells in vivo using PAI.
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Affiliation(s)
- Yonghong Yang
- Department of Chemistry, University of Liverpool, Oxford Street, Liverpool L69 7ZD, U.K
- Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Crown Street, Liverpool L69 3BX, U.K
| | - Claudia Fryer
- Department of Chemistry, University of Liverpool, Oxford Street, Liverpool L69 7ZD, U.K
- Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Crown Street, Liverpool L69 3BX, U.K
| | - Jack Sharkey
- Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Crown Street, Liverpool L69 3BX, U.K
| | - Aidan Thomas
- Department of Chemistry, University of Liverpool, Oxford Street, Liverpool L69 7ZD, U.K
| | - Ulrike Wais
- Department of Chemistry, University of Liverpool, Oxford Street, Liverpool L69 7ZD, U.K
- Institute of Chemical and Engineering Science, 1 Pesek Road, Jurong Island 627833, Singapore
| | - Alexander W Jackson
- Institute of Chemical and Engineering Science, 1 Pesek Road, Jurong Island 627833, Singapore
| | - Bettina Wilm
- Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Crown Street, Liverpool L69 3BX, U.K
| | - Patricia Murray
- Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Crown Street, Liverpool L69 3BX, U.K
| | - Haifei Zhang
- Department of Chemistry, University of Liverpool, Oxford Street, Liverpool L69 7ZD, U.K
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Abstract
We focus on three strategies for renal regenerative medicine; administering cells to replace damaged tissue, promoting endogenous regeneration, and growing stem cell-derived organs. Mouse kidney regeneration can be promoted by stem cells injected into the circulation which do not become new kidney tissue but seem to secrete regeneration-promoting humoral factors. This argues against direct replacement but encourages developing pharmacological stimulators of endogenous regeneration. Simple ‘kidneys’ have been made from stem cells, but there is a large gap between what has been achieved and a useful transplantable organ. Most current work aims to stimulate endogenous regeneration or to grow new organs but much remains to be done; misplaced hype about short-term prospects of regenerative medicine helps neither researchers nor patients.
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Affiliation(s)
- Jamie A Davies
- Deanery of Biomedical Sciences, University of Edinburgh, EH8 9XB, Edinburgh, UK
| | - Patricia Murray
- Department of Cellular and Molecular Physiology, University of Liverpool, UK.,Centre for Preclinical Imaging, University of Liverpool, UK
| | - Bettina Wilm
- Department of Cellular and Molecular Physiology, University of Liverpool, UK.,Centre for Preclinical Imaging, University of Liverpool, UK
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Walls GM, McConnell L, McAleese J, Murray P, Lynch TB, Savage K, Hanna GG, de Castro DG. Early circulating tumour DNA kinetics measured by ultra-deep next-generation sequencing during radical radiotherapy for non-small cell lung cancer: a feasibility study. Radiat Oncol 2020; 15:132. [PMID: 32471446 PMCID: PMC7260736 DOI: 10.1186/s13014-020-01583-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 05/25/2020] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND The evaluation of circulating tumour DNA (ctDNA) from clinical blood samples, liquid biopsy, offers several diagnostic advantages compared with traditional tissue biopsy, such as shorter processing time, reduced patient risk and the opportunity to assess tumour heterogeneity. The historically poor sensitivity of ctDNA testing, has restricted its integration into routine clinical practice for non-metastatic disease. The early kinetics of ctDNA during radical radiotherapy for localised NSCLC have not been described with ultra-deep next generation sequencing previously. MATERIALS AND METHODS Patients with CT/PET-staged locally advanced, NSCLC prospectively consented to undergo serial venepuncture during the first week of radical radiotherapy alone. All patients received 55Gy in 20 fractions. Plasma samples were processed using the commercially available Roche AVENIO Expanded kit (Roche Sequencing Solutions, Pleasanton, CA, US) which targets 77 genes. RESULTS Tumour-specific mutations were found in all patients (1 in 3 patients; 2 in 1 patient, and 3 in 1 patient). The variant allele frequency of these mutations ranged from 0.05-3.35%. In 2 patients there was a transient increase in ctDNA levels at the 72 h timepoint compared to baseline. In all patients there was a non-significant decrease in ctDNA levels at the 7-day timepoint in comparison to baseline (p = 0.4627). CONCLUSION This study demonstrates the feasibility of applying ctDNA-optimised NGS protocols through specified time-points in a small homogenous cohort of patients with localised lung cancer treated with radiotherapy. Studies are required to assess ctDNA kinetics as a predictive biomarker in radiotherapy. Priming tumours for liquid biopsy using radiation warrants further exploration.
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Affiliation(s)
- G. M. Walls
- Centre for Cancer Research & Cell Biology, Queen’s University Belfast, 97 Lisburn Road, Belfast, BT9 7AE Northern Ireland
- Cancer Centre Belfast City Hospital, Belfast Health & Social Care Trust, 51 Lisburn Road, Belfast, BT9 7AB Northern Ireland
| | - L. McConnell
- Centre for Cancer Research & Cell Biology, Queen’s University Belfast, 97 Lisburn Road, Belfast, BT9 7AE Northern Ireland
| | - J. McAleese
- Cancer Centre Belfast City Hospital, Belfast Health & Social Care Trust, 51 Lisburn Road, Belfast, BT9 7AB Northern Ireland
| | - P. Murray
- Northern Ireland Biobank, Health Sciences Building, Queen’s University Belfast, 97 Lisburn Road, Belfast, BT9 7AE Northern Ireland
| | - T. B. Lynch
- Cancer Centre Belfast City Hospital, Belfast Health & Social Care Trust, 51 Lisburn Road, Belfast, BT9 7AB Northern Ireland
| | - K. Savage
- Centre for Cancer Research & Cell Biology, Queen’s University Belfast, 97 Lisburn Road, Belfast, BT9 7AE Northern Ireland
| | - G. G. Hanna
- Sir Peter MacCallum Department of Oncology, University of Melbourne, 305 Grattan St, Melbourne, VIC 3000 Australia
| | - D. Gonzalez de Castro
- Centre for Cancer Research & Cell Biology, Queen’s University Belfast, 97 Lisburn Road, Belfast, BT9 7AE Northern Ireland
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46
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Forster K, Tsang K, Li S, Ieraci L, Murray P, Woltman KJ, Chmelnitsky D, Holloway CMB, Kennedy ED. Can concordance between actual care received and a pathway map be measured on a population level in Ontario? A pilot study. ACTA ACUST UNITED AC 2020; 27:e27-e33. [PMID: 32218665 DOI: 10.3747/co.27.5349] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Background Clinical pathways are associated with improved adherence to clinical guidelines; however, most studies have evaluated pathways for a single intervention at a single institution. The objective of the present study was to develop and evaluate a method of measuring concordance with a population-based clinical pathway map to determine if that method could be feasible for assessing overall health system performance. Methods Patients with stage ii or iii colon cancer diagnosed in 2010 were identified, and clinical data were obtained through linkages to administrative databases. Pathway concordance was defined a priori based on receipt of key elements of the Ontario Health (Cancer Care Ontario) colorectal pathway maps. For stages ii and iii colon cancer alike, concordance was reported as the proportion of patients receiving care that followed the predefined key elements of the pathway map. Regression analysis was used to identify predictors of concordant care. Results Our study identified 816 patients with stage ii and 800 patients with stage iii colon cancer. Of the patients with stage ii disease, 70% (n = 571) received concordant care. Of the patients with stage iii disease, results showed high concordance for all key elements except receipt of chemotherapy, leading to an overall concordance rate of 39% for that cohort. Conclusions Our method of measuring concordance was feasible on a population-based level, but future studies to validate it and to develop more sophisticated methods to measure concordance in larger cohorts and various disease sites are necessary. Measurement of clinical pathway concordance on a population-based level has the potential to be a useful tool for assessing system performance.
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Affiliation(s)
- K Forster
- Ontario Health (Cancer Care Ontario)
| | - K Tsang
- Ontario Health (Cancer Care Ontario)
| | - S Li
- Ontario Health (Cancer Care Ontario)
| | - L Ieraci
- Ontario Health (Cancer Care Ontario)
| | - P Murray
- Ontario Health (Cancer Care Ontario)
| | | | | | - C M B Holloway
- Ontario Health (Cancer Care Ontario).,Department of Surgery, Sunnybrook Health Sciences Centre
| | - E D Kennedy
- Ontario Health (Cancer Care Ontario).,Department of Surgery, Mount Sinai Hospital.,Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, ON
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Mihajluk K, Simms C, Reay M, Madureira PA, Howarth A, Murray P, Nasser S, Duckworth CA, Pritchard DM, Pilkington GJ, Hill R. Corrigendum to "IP1867B suppresses the insulin-like growth factor 1 receptor (IGF1R) ablating epidermal growth factor receptor inhibitor resistance in adult high grade gliomas." [Cancer Lett. 458C (2019) 29-38]. Cancer Lett 2020; 469:524-525. [PMID: 31604579 DOI: 10.1016/j.canlet.2019.10.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- K Mihajluk
- Brain Tumour Research Centre, Institute of Biomedical and Biomolecular Sciences, IBBS, University of Portsmouth, PO1 2DT, UK
| | - C Simms
- Brain Tumour Research Centre, Institute of Biomedical and Biomolecular Sciences, IBBS, University of Portsmouth, PO1 2DT, UK
| | - M Reay
- Brain Tumour Research Centre, Institute of Biomedical and Biomolecular Sciences, IBBS, University of Portsmouth, PO1 2DT, UK
| | - P A Madureira
- Centre for Biomedical Research (CBMR), University of Algarve, Campus of Gambelas, Building 8, Room 3.4, 8005-139, Faro, Portugal
| | - A Howarth
- Brain Tumour Research Centre, Institute of Biomedical and Biomolecular Sciences, IBBS, University of Portsmouth, PO1 2DT, UK
| | - P Murray
- Brain Tumour Research Centre, Institute of Biomedical and Biomolecular Sciences, IBBS, University of Portsmouth, PO1 2DT, UK
| | - S Nasser
- Brain Tumour Research Centre, Institute of Biomedical and Biomolecular Sciences, IBBS, University of Portsmouth, PO1 2DT, UK
| | - C A Duckworth
- Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, L69 3GE, UK
| | - D M Pritchard
- Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, L69 3GE, UK
| | - G J Pilkington
- Brain Tumour Research Centre, Institute of Biomedical and Biomolecular Sciences, IBBS, University of Portsmouth, PO1 2DT, UK
| | - R Hill
- Brain Tumour Research Centre, Institute of Biomedical and Biomolecular Sciences, IBBS, University of Portsmouth, PO1 2DT, UK.
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Mournetas V, Pereira SM, Fernig DG, Murray P. Corrigendum: A descriptive guide for absolute quantification of produced shRNA pseudotyped lentiviral particles by real-time PCR. J Biol Methods 2020; 6:e122. [PMID: 31976349 PMCID: PMC6974693 DOI: 10.14440/jbm.2019.326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Tsiplova K, Ungar WJ, Flanagan HE, den Otter J, Waddell C, Murray P, D'Entremont B, Léger N, Garon N, Bryson S, Smith IM. Types of Services and Costs of Programs for Preschoolers with Autism Spectrum Disorder Across Sectors: A Comparison of Two Canadian Provinces. J Autism Dev Disord 2019; 49:2492-2508. [PMID: 30937737 DOI: 10.1007/s10803-019-03993-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
This study measured resource utilization and costs for pre-school autism spectrum disorder (ASD)-related services in community-based sectors from multiple payer perspectives in two Canadian provinces, Nova Scotia (NS) and New Brunswick (NB), during the 12 months prior to and following the start of early intensive behavioural intervention (EIBI). The results indicate significant differences between NB and NS in utilization of services and costs to families, public sector and society. Differences can be attributed to variation in EIBI delivery models and may also be influenced by differences in diagnostic assessment practices. The study results provide resource utilization rates and costs which could be used in future economic evaluations and to inform policy making to improve outcomes for children with ASD.
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Affiliation(s)
- Kate Tsiplova
- Child Health Evaluative Sciences, The Hospital for Sick Children Research Institute, 686 Bay Street, Toronto, ON, M5G 0A4, Canada
| | - Wendy J Ungar
- Child Health Evaluative Sciences, The Hospital for Sick Children Research Institute, 686 Bay Street, Toronto, ON, M5G 0A4, Canada. .,Institute of Health Policy, Management and Evaluation, University of Toronto, 155 College Street, Suite 425, Toronto, ON, M5T 3M6, Canada. .,Program of Child Health Evaluative Sciences, The Hospital for Sick Children Peter Gilgan Centre for Research and Learning, 11th floor, 686 Bay Street, Toronto, ON, M5G 0A4, Canada.
| | - Helen E Flanagan
- Autism Research Centre, IWK Health Centre, 4th Floor Link Building, 5850/5980 University Avenue, Halifax, NS, B3K 6R8, Canada
| | - Jeffrey den Otter
- Department of Education and Early Childhood Development, Government of New Brunswick, Place 2000, P. O. Box 6000, Fredericton, NB, E3B 5H1, Canada
| | - Charlotte Waddell
- Faculty of Health Sciences, Simon Fraser University, Blusson Hall, Room 11300, 8888 University Drive, Burnaby, BC, V5A 1S6, Canada
| | - Patricia Murray
- Department of Health and Wellness, Government of Nova Scotia, PO Box 488, Halifax, NS, B3J 2R8, Canada
| | - Barbara D'Entremont
- Department of Psychology, University of New Brunswick, PO Box 4400, Fredericton, NB, E3B 5A3, Canada
| | - Natalie Léger
- Department of Education and Early Childhood Development, Government of New Brunswick, Place 2000, P. O. Box 6000, Fredericton, NB, E3B 5H1, Canada
| | - Nancy Garon
- Department of Psychology, Mount Allison University, 49A York St., Sackville, NB, E4L 1C7, Canada
| | - Susan Bryson
- Autism Research Centre, IWK Health Centre, 4th Floor Link Building, 5850/5980 University Avenue, Halifax, NS, B3K 6R8, Canada.,Department of Pediatrics, Dalhousie University, 5850 University Avenue, P. O. Box 9700, Halifax, NS, B3K 6R8, Canada
| | - Isabel M Smith
- Autism Research Centre, IWK Health Centre, 4th Floor Link Building, 5850/5980 University Avenue, Halifax, NS, B3K 6R8, Canada.,Department of Pediatrics, Dalhousie University, 5850 University Avenue, P. O. Box 9700, Halifax, NS, B3K 6R8, Canada
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McKnight DT, Nordine J, Jerrett B, Murray M, Murray P, Moss R, Northey M, Simard N, Alford RA, Schwarzkopf L. Do morphological adaptations for gliding in frogs influence clinging and jumping? J Zool (1987) 2019. [DOI: 10.1111/jzo.12725] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- D. T. McKnight
- College of Science and Engineering James Cook University Townsville QLD Australia
| | - J. Nordine
- College of Science and Engineering James Cook University Townsville QLD Australia
| | - B. Jerrett
- College of Science and Engineering James Cook University Townsville QLD Australia
| | - M. Murray
- College of Science and Engineering James Cook University Townsville QLD Australia
| | - P. Murray
- College of Science and Engineering James Cook University Townsville QLD Australia
| | - R. Moss
- College of Science and Engineering James Cook University Townsville QLD Australia
| | - M. Northey
- College of Science and Engineering James Cook University Townsville QLD Australia
| | - N. Simard
- College of Science and Engineering James Cook University Townsville QLD Australia
| | - R. A. Alford
- College of Science and Engineering James Cook University Townsville QLD Australia
| | - L. Schwarzkopf
- College of Science and Engineering James Cook University Townsville QLD Australia
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