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Chaw K, Newton P, Botes J, Miyakis S. Swimming pool associated urinary tract infection due to Aeromonas species – a case report. Pathology 2017. [DOI: 10.1016/j.pathol.2016.12.334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Newton P, Si S, Reid C, Macdonald P. 30-Day and 12-Month Outcomes from the NSW Heart Failure SNAPSHOT. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Fiene A, Baqi Y, Malik EM, Newton P, Li W, Lee SY, Hartland EL, Müller CE. Inhibitors for the bacterial ectonucleotidase Lp1NTPDase from Legionella pneumophila. Bioorg Med Chem 2016; 24:4363-4371. [DOI: 10.1016/j.bmc.2016.07.027] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Accepted: 07/15/2016] [Indexed: 12/29/2022]
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Zecchin R, Ferry C, McIvor D, Wilcox K, Kerr J, Bennett S, Bowen S, Carr B, Newton P, Gallagher R. Establishing a NSW Cardiac Rehabilitation Minimum Dataset (CRMDS). Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Jha S, Hannu M, Newton P, Wilhelm K, Hayward C, Jabbour A, Kotlyar E, Keogh A, Dhital K, Granger E, Jansz P, Spratt P, Montgomery E, Harkess M, Tunnicliff P, Macdonald P. Cognitive Frailty in Heart-Transplant Eligible Patients: A Better Predictor of Mortality. Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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31
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Prichard R, Hayward C, Davidson P, Goodall S, Newton P. Impact of Left Ventricular Assist Device Implantation on Hospitalisation, and Readmissions Using a Linked Administrative Dataset. Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Newton P, Reid C, Macdonald P. Impact of Frailty on the Management and Outcomes of Acute Heart Failure. Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Bowns IR, Newton P, Long S, Walters S, Rector A, Conway JV. Testing headings for communicating the personal health record: comparison from the recipients’ perspective. Health Informatics J 2016. [DOI: 10.1177/146045829900500402] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
In the spring of 1998, 16 general practitioners and 16 community psychiatric nurses participated in a study to test a draft set of headings for communicating clinical summaries. Eight anonymized psychiatric discharge summaries were used to assess the impact of the presentational format on the time taken by professionals to read the summaries and to answer a series of standard questions about each of them. Respondents also completed a questionnaire on their opinions of the headings. There was considerable variation between individuals in the times taken to read the summaries and answer the questions, but no evidence that any of the formats was associated with decreased reading time or with improvement in retrieving information. Most respondents preferred information structured using the headings rather than the original semi-structured discharge summaries, and information on paper rather than on computer screen. Respondents were guardedly supportive of the particular draft headings presented. A weak preference was expressed for locally defined headings, with some recognition of advantages in widely agreed headings. There was a view that there were too many headings, and there was overlap between specific heading pairs (for example, ‘aim’ and ‘goal’). Concerns were expressed about specific headings, particularly the ‘softer’ headings, such as ‘informing’ and ‘communicating’.
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Newton P, Latomanski EA, Newton HJ. Applying Fluorescence Resonance Energy Transfer (FRET) to Examine Effector Translocation Efficiency by Coxiella burnetii during siRNA Silencing. J Vis Exp 2016. [PMID: 27501079 DOI: 10.3791/54210] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Coxiella burnetii, the causative agent of Q fever, is an intracellular pathogen that relies on a Type IV Dot/Icm Secretion System to establish a replicative niche. A cohort of effectors are translocated through this system into the host cell to manipulate host processes and allow the establishment of a unique lysosome-derived vacuole for replication. The method presented here involves the combination of two well-established techniques: specific gene silencing using siRNA and measurement of effector translocation using a FRET-based substrate that relies on β-lactamase activity. Applying these two approaches, we can begin to understand the role of host factors in bacterial secretion system function and effector translocation. In this study we examined the role of Rab5A and Rab7A, both important regulators of the endocytic trafficking pathway. We demonstrate that silencing the expression of either protein results in a decrease in effector translocation efficiency. These methods can be easily modified to examine other intracellular and extracellular pathogens that also utilize secretion systems. In this way, a global picture of host factors involved in bacterial effector translocation may be revealed.
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Prichard R, Newton P, Goodall S, Kershaw L, Davidson P, Homer T, McNeil F, Hayward C. Establishing Institutional Costs in the Year Before and After VAD Implant and Before Heart Transplant. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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37
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Jha S, Hannu M, Newton P, Wilhelm K, Hayward C, Jabbour A, Kotlyar E, Keogh A, Dhital K, Granger E, Jansz P, Spratt P, Montgomery E, Harkess M, Tunnicliff P, Shaw S, MacDonald P. Inclusion of Cognitive and Mood Domains in the Assessment of Frailty Enhances Outcome Prediction in Heart Transplant-Eligible Patients With Advanced Heart Failure. J Heart Lung Transplant 2015. [DOI: 10.1016/j.healun.2015.01.494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Jha S, Hannu M, Newton P, Wilhelm K, Hayward C, Jabbour A, Kotlyar E, Keogh A, Dhital K, Granger E, Jansz P, Spratt P, Montgomery E, Tunnicilff P, Shaw S, MacDonald P. Frailty as a Predictor of Outcomes in Heart Transplant-Eligible Patients With Advanced Heart Failure. J Heart Lung Transplant 2015. [DOI: 10.1016/j.healun.2015.01.512] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Hannu M, Jha S, Wilhelm K, Montgomery E, Tunnicliff P, Shaw S, Hayward C, Harkess M, Kotlyar E, Jabbour A, Keogh A, Granger E, Dhital K, Jansz P, Newton P, Robson D, MacDonald P, Spratt P. Inclusion of Cognitive and Mood Domains in the Assessment of Frailty Enhances Outcome Prediction in Patients Undergoing Ventricular Assist Device Implantation. J Heart Lung Transplant 2015. [DOI: 10.1016/j.healun.2015.01.058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Moffatt JH, Newton P, Newton HJ. Coxiella burnetii: turning hostility into a home. Cell Microbiol 2015; 17:621-31. [PMID: 25728389 DOI: 10.1111/cmi.12432] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Revised: 02/08/2015] [Accepted: 02/24/2015] [Indexed: 01/20/2023]
Abstract
Coxiella burnetii, the causative agent of the human disease Q fever, is a unique intracellular bacterial pathogen. Coxiella replicates to high numbers within a pathogen-derived lysosome-like vacuole, thriving within a low pH, highly proteolytic and oxidative environment. In 2009, researchers developed means to axenically culture Coxiella paving the way for the development of tools to genetically manipulate the organism. These advances have revolutionized our capacity to examine the pathogenesis of Coxiella. In recent years, targeted and random mutant strains have been used to demonstrate that the Dot/Icm type IV secretion system is essential for intracellular replication of Coxiella. Current research is focused towards understanding the unique cohort of over 130 effector proteins that are translocated into the host cell. Mutagenesis screens have been employed to identify effectors that play important roles for the biogenesis of the Coxiella-containing vacuole and intracellular replication of Coxiella. A surprisingly high number of effector mutants demonstrate significant intracellular growth defects, and future studies on the molecular function of these effectors will provide great insight into the pathogenesis of Coxiella. Already, this expanse of new data implicates many eukaryotic processes that are targeted by the arsenal of Coxiella effectors including autophagy, apoptosis and vesicular trafficking.
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Asimakopoulou K, Newton P, Scambler S. ‘First do no harm’: the potential shortfalls of empowerment in diabetes. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/edn.162] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Newton P, Asimakopoulou KG. Response to Professor Anderson’s commentary on Empowerment article by Asimakopoulou, K. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/edn.102] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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King NP, Newton P, Schuelein R, Brown DL, Petru M, Zarsky V, Dolezal P, Luo L, Bugarcic A, Stanley AC, Murray RZ, Collins BM, Teasdale RD, Hartland EL, Stow JL. Soluble NSF attachment protein receptor molecular mimicry by a Legionella pneumophila Dot/Icm effector. Cell Microbiol 2015; 17:767-84. [PMID: 25488819 DOI: 10.1111/cmi.12405] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Revised: 11/10/2014] [Accepted: 12/02/2014] [Indexed: 01/17/2023]
Abstract
Upon infection, Legionella pneumophila uses the Dot/Icm type IV secretion system to translocate effector proteins from the Legionella-containing vacuole (LCV) into the host cell cytoplasm. The effectors target a wide array of host cellular processes that aid LCV biogenesis, including the manipulation of membrane trafficking. In this study, we used a hidden Markov model screen to identify two novel, non-eukaryotic soluble NSF attachment protein receptor (SNARE) homologs: the bacterial Legionella SNARE effector A (LseA) and viral SNARE homolog A proteins. We characterized LseA as a Dot/Icm effector of L. pneumophila, which has close homology to the Qc-SNARE subfamily. The lseA gene was present in multiple sequenced L. pneumophila strains including Corby and was well distributed among L. pneumophila clinical and environmental isolates. Employing a variety of biochemical, cell biological and microbiological techniques, we found that farnesylated LseA localized to membranes associated with the Golgi complex in mammalian cells and LseA interacted with a subset of Qa-, Qb- and R-SNAREs in host cells. Our results suggested that LseA acts as a SNARE protein and has the potential to regulate or mediate membrane fusion events in Golgi-associated pathways.
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Allida S, Inglis S, Davidson P, Newton P, Hayward C. Current strategies employed by nurses used to manage the symptom of thirst in chronic heart failure. Heart Lung Circ 2015. [DOI: 10.1016/j.hlc.2015.06.214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Ivynian S, DiGiacomo M, Jha S, Crossley C, Newton P. Care-seeking decisions for worsening symptoms in Heart Failure: a qualitative metasynthesis. Heart Lung Circ 2015. [DOI: 10.1016/j.hlc.2015.06.711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Newton P, Davidson P, Reid C, Macdonald P. A snapshot of acute decompensated heart failure across New South Wales. Baseline results from the NSW HF Snapshot. Heart Lung Circ 2015. [DOI: 10.1016/j.hlc.2015.06.192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Comen E, Mason J, Nieva J, Newton P, Kuhn P, Norton L, Venkatappa N, Jochelson M. SU-E-J-115: Using Markov Chain Modeling to Elucidate Patterns in Breast Cancer Metastasis Over Time and Space. Med Phys 2014. [DOI: 10.1118/1.4888167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Clarke L, Newton P, Leaver A. PB.49: Preoperative axillary staging in breast cancer patients: repeat sampling in cases of suspicious ultrasound or inconclusive cytology. Breast Cancer Res 2013. [PMCID: PMC3980824 DOI: 10.1186/bcr3549] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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49
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Clarke L, Leaver A, Newton P. PB.50: Axillary lymph node ultrasound in breast cancer patients: what minimum threshold for diffuse cortical thickening predicts nodal involvement? Breast Cancer Res 2013. [PMCID: PMC3980976 DOI: 10.1186/bcr3550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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50
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Newton P, Du H, Everett B, Salamonson Y, Davidson P. Home Heart Walk to Improve Self-care in Chronic Heart Failure: A Randomised Controlled Trial. Heart Lung Circ 2013. [DOI: 10.1016/j.hlc.2013.05.576] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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