76
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Wilson C, Speight L, Lau D, Ketchell R, Duckers J, Edwards A. P228 Genetic counselling: do our patients know what we think they know? J Cyst Fibros 2018. [DOI: 10.1016/s1569-1993(18)30523-x] [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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77
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Wilson C, Speight L, Ketchell R, Petit R, Lau D, Stone M, Farmer B, Duckers J. P209 Monitoring bone health in the All Wales Adult CF Centre (AWACFC). J Cyst Fibros 2018. [DOI: 10.1016/s1569-1993(18)30504-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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78
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Beaubier N, Tell R, Huether R, Bontrager M, Bush S, Parsons J, Shah K, Baker T, Selkov G, Taxter T, Thomas A, Bettis S, Khan A, Lau D, Lee C, Barber M, Cieslik M, Frankenberger C, Franzen A, Weiner A, Palmer G, Lonigro R, Robinson D, Wu YM, Cao X, Lefkofsky E, Chinnaiyan A, White KP. Clinical validation of the Tempus xO assay. Oncotarget 2018; 9:25826-25832. [PMID: 29899824 PMCID: PMC5995233 DOI: 10.18632/oncotarget.25381] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2017] [Accepted: 03/21/2018] [Indexed: 01/01/2023] Open
Abstract
We have developed a clinically validated NGS assay that includes tumor, germline and RNA sequencing. We apply this assay to clinical specimens and cell lines, and we demonstrate a clinical sensitivity of 98.4% and positive predictive value of 100% for the clinically actionable variants measured by the assay. We also demonstrate highly accurate copy number measurements and gene rearrangement identification.
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79
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Gallagher C, Hendriks J, Giles L, Middeldorp M, Mahajan R, Lau D, Sanders P, Wong CX. 196Trends in hospital admissions for atrial fibrillation in Australia: a relentless rise. Europace 2018. [DOI: 10.1093/europace/euy015.045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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80
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Emami M, Mishima RS, Kadhim K, Thiyagarajah A, Munawar DA, Khokhar KB, Wells R, Linz D, Mahajan R, Lau D, Sanders P. P433Case series of radiofrequency ablation for drug resistant inappropriate sinus tachycardia. Europace 2018. [DOI: 10.1093/europace/euy015.244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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81
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Verdicchio C, Elliott A, Mahajan R, Gallagher C, Middeldorp M, Linz D, Lau D, Sanders P. P1189Use of heart rate to guide exercise training intensity in patients with atrial fibrillation. Europace 2018. [DOI: 10.1093/europace/euy015.673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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82
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Verdicchio C, Elliott A, Wijaithum P, Lau D, Sanders P, Mahajan R. 50Restoration of sinus rhythm improves exercise capacity in patients with persistent atrial fibrillation: a meta-analysis. Europace 2018. [DOI: 10.1093/europace/euy015.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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83
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Rattanakosit T, Lau D, Linz D, Agbaedeng T, Sanders P, Mahajan R. P366Radiofrequency catheter ablation technology to improve lesion formation. Europace 2018. [DOI: 10.1093/europace/euy015.177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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84
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Khokhar K, Lau D, Mahajan R, Elliott A, Stiles M, Mishima R, Munawar D, Kadhim K, Linz D, Thiyagarajah A, Harrington J, Wilson L, Stokes M, Emami M, Agbaedeng T, Teo K, Nelson A, Gallaghar C, Sanders P. Central Blood Pressure Assessment in Atrial Fibrillation. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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85
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Emami M, Mishima R, Thiyagarajah A, Munawar D, Khokhar K, Kadhim K, Rachel W, Linz D, Mahajan R, Lau D, Sanders P. Clinical Outcomes and Complications of Ablative Therapy of Inappropriate Sinus Tachycardia: A Case Series. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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86
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Khokhar K, Lau D, Elliott A, Mahajan R, Thiyagarajah A, Stiles M, Munawar D, Kadhim K, Emami M, Linz D, Agbaedeng T, Mishima R, Gallagher C, Middeldorp M, Sanders P. Association of Increased Pulse Pressure with Incidental Atrial Fibrillation: An Updated Systemic Review and Meta-Analysis. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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87
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Emami M, Agbaedeng T, Mishima R, Thiyagarajah A, Munawar D, Khokhar K, Kadhim K, Linz D, Hendriks J, Middeldorp M, Gallagher C, Mahajan R, Lau D, Sanders P. Assessment of Leukocyte Telomere Length as an Indicator of Biological Age for Risk Stratification of Cardiovascular Events: A Meta-Analysis. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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88
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Emami M, Kadhim K, Linz D, Mishima R, Thiyagarajah A, Munawar D, Khokhar K, Kutieleh R, Lee G, Kalman J, Mahajan R, Lau D, Sanders P. Posterior Left Atrium and Pulmonary Veins Demonstrate the Characteristics of the Substrate in Longstanding Persistent Atrial Fibrillation: Insights from High-Density Mapping. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.316] [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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89
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Agbaedeng T, Emami M, Munawar D, Khokhar K, Mahajan R, Lau D, Sanders P. Leukocyte Telomere Length Shortening Strongly Associates with Atrial Fibrillation Risk factors: Scaling the Impact of Metabolic Syndrome in a Meta-Analysis. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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90
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Thiyagarajah A, Emami M, Linz D, Middeldorp M, Mishima R, Kadhim K, Munawar D, Khokhar K, Mahajan R, Lau D, Sanders P. We Must Believe in BELIEF: Left Atrial Appendage as a Source of Arrhythmogenesis. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.360] [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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91
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Pitman B, Schirripa V, Munawar D, Khokhar K, Emami M, Thiyagarajah A, Linz D, Kadhim K, Wong C, Mishima R, Wilson L, Young G, Roberts-Thomson K, Mahajan R, Sanders P, Lau D. Interrogation of Cardiac Implantable Electronic Devices in the Emergency Department Infrequently Yields Remarkable Issues: Implications for Service Planning and Care Delivery. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.290] [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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92
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Rattanakosit T, Agbaedeng T, Lau D, Linz D, Sanders P, Mahajan R. Contact Force-Sensing Catheters in Atrial Fibrillation Ablation: A Meta-Analysis of Randomised Controlled Studies. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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93
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Emami M, Thiyagarajah A, Mishima R, Linz D, Kadhim K, Mahajan R, Middeldorp M, Roberts-Thomson K, Lau D, Young G, Sanders P. Long-Term performance of the Medtronic Selectsecure Pacing Lead: Implications for His-Bundle Pacing. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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94
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Emami M, Kadhim K, Linz D, Sanders P, Lau D, Mahajan R. Scarring Around the Distal Tip of Subcutaneous Implantable Cardioverter Defibrillator Lead Causing Inappropriate Shock. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.337] [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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95
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Lai G, Nahar R, Lim T, Kwang X, Liew P, Lim J, Aung Z, Takano A, Lim W, Lau D, Tan W, Ang M, Toh C, Tan B, Devanand A, Too C, Gogna A, Ong B, Koh T, Kanesvaran R, Ng Q, Jain A, Yuan J, Lim T, Lim A, Hillmer A, Zhai W, Iyer G, Tan E, Tam W, Tan D. OA 09.07 Clonality of c-MET Copy Number Gain as a Determinant of Primary TKI Resistance in EGFR-Mutant NSCLC. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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96
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Klatt N, Scherschel K, Schad C, Lau D, Reitmeier A, Kuklik P, Muellerleile K, Yamamura J, Zeller T, Steven D, Baldus S, Schäffer B, Jungen C, Eickholt C, Wassilew K, Schwedhelm E, Willems S, Meyer C. Development of nonfibrotic left ventricular hypertrophy in an ANG II-induced chronic ovine hypertension model. Physiol Rep 2017; 4:4/17/e12897. [PMID: 27613823 PMCID: PMC5027340 DOI: 10.14814/phy2.12897] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Accepted: 07/19/2016] [Indexed: 12/29/2022] Open
Abstract
Hypertension is a major risk factor for many cardiovascular diseases and leads to subsequent concomitant pathologies such as left ventricular hypertrophy (LVH). Translational approaches using large animals get more important as they allow the use of standard clinical procedures in an experimental setting. Therefore, the aim of this study was to establish a minimally invasive ovine hypertension model using chronic angiotensin II (ANG II) treatment and to characterize its effects on cardiac remodeling after 8 weeks. Sheep were implanted with osmotic minipumps filled with either vehicle control (n = 7) or ANG II (n = 9) for 8 weeks. Mean arterial blood pressure in the ANG II‐treated group increased from 87.4 ± 5.3 to 111.8 ± 6.9 mmHg (P = 0.00013). Cardiovascular magnetic resonance imaging showed an increase in left ventricular mass from 112 ± 12.6 g to 131 ± 18.7 g after 7 weeks (P = 0.0017). This was confirmed by postmortem measurement of left ventricular wall thickness which was higher in ANG II‐treated animals compared to the control group (18 ± 4 mm vs. 13 ± 2 mm, respectively, P = 0.002). However, ANG II‐treated sheep did not reveal any signs of fibrosis or inflammatory infiltrates as defined by picrosirius red and H&E staining on myocardial full thickness paraffin sections of both atria and ventricles. Measurements of plasma high‐sensitivity C‐reactive protein and urinary 8‐iso‐prostaglandin F2α were inconspicuous in all animals. Furthermore, multielectrode surface mapping of the heart did not show any differences in epicardial conduction velocity and heterogeneity. These data demonstrate that chronic ANG II treatment using osmotic minipumps presents a reliable, minimally invasive approach to establish hypertension and nonfibrotic LVH in sheep.
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97
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Khokhar K, Elliot A, Stiles M, Lau D, Mahajan R, Thiayagraj A, Munawar D, Gallagher C, Middeldorp M, Agbaedeng T, Sanders P. P3554Aortic stiffness in atrial fibrillation: q systematic review and meta-analysis. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p3554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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98
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Linz D, Hohl M, Linz B, Nickel A, Maack C, Lau D, Sanders P. P455Simulated obstructive respiratory events, but not intermittent hypoxia alone, result in the development of an atrial arrhythmogenic substrate in a novel rat model for sleep apnea. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx501.p455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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99
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Pellegren JP, Lau D, Sokalski V. Dispersive Stiffness of Dzyaloshinskii Domain Walls. PHYSICAL REVIEW LETTERS 2017; 119:027203. [PMID: 28753357 DOI: 10.1103/physrevlett.119.027203] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Indexed: 06/07/2023]
Abstract
It is well documented that subjecting perpendicular magnetic films that exhibit the interfacial Dzyaloshinskii-Moriya interaction to an in-plane magnetic field results in a domain wall (DW) energy σ, which is highly anisotropic with respect to the orientation of the DW in the film plane Θ. We demonstrate that this anisotropy has a profound impact on the elastic response of the DW as characterized by the surface stiffness σ[over ˜](Θ)=σ(Θ)+σ^{''}(Θ) and evaluate its dependence on the length scale of deformation. The influence of stiffness on DW mobility in the creep regime is assessed, with analytic and numerical calculations showing trends in σ[over ˜] that better represent experimental measurements of domain wall velocity in magnetic thin films compared to σ alone. Our treatment provides experimental support for theoretical models of the mobility of anisotropic elastic manifolds and makes progress toward a more complete understanding of magnetic domain wall creep.
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100
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Mollenhauer M, Friedrichs K, Lange M, Gesenberg J, Remane L, Kerkenpaß C, Krause J, Schneider J, Ravekes T, Maass M, Halbach M, Peinkofer G, Saric T, Mehrkens D, Adam M, Deuschl FG, Lau D, Geertz B, Manchanda K, Eschenhagen T, Kubala L, Rudolph TK, Wu Y, Tang WHW, Hazen SL, Baldus S, Klinke A, Rudolph V. Myeloperoxidase Mediates Postischemic Arrhythmogenic Ventricular Remodeling. Circ Res 2017; 121:56-70. [PMID: 28404615 PMCID: PMC5482785 DOI: 10.1161/circresaha.117.310870] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Revised: 03/20/2017] [Accepted: 04/11/2017] [Indexed: 01/09/2023]
Abstract
RATIONALE Ventricular arrhythmias remain the leading cause of death in patients suffering myocardial ischemia. Myeloperoxidase, a heme enzyme released by polymorphonuclear neutrophils, accumulates within ischemic myocardium and has been linked to adverse left ventricular remodeling. OBJECTIVE To reveal the role of myeloperoxidase for the development of ventricular arrhythmias. METHODS AND RESULTS In different murine models of myocardial ischemia, myeloperoxidase deficiency profoundly decreased vulnerability for ventricular tachycardia on programmed right ventricular and burst stimulation and spontaneously as assessed by ECG telemetry after isoproterenol injection. Experiments using CD11b/CD18 integrin-deficient (CD11b-/-) mice and intravenous myeloperoxidase infusion revealed that neutrophil infiltration is a prerequisite for myocardial myeloperoxidase accumulation. Ventricles from myeloperoxidase-deficient (Mpo-/-) mice showed less pronounced slowing and decreased heterogeneity of electric conduction in the peri-infarct zone than wild-type mice. Expression of the redox-sensitive gap junctional protein Cx43 (Connexin 43) was reduced in the peri-infarct area of wild-type compared with Mpo-/- mice. In isolated wild-type cardiomyocytes, Cx43 protein content decreased on myeloperoxidase/H2O2 incubation. Mapping of induced pluripotent stem cell-derived cardiomyocyte networks and in vivo investigations linked Cx43 breakdown to myeloperoxidase-dependent activation of matrix metalloproteinase 7. Moreover, Mpo-/- mice showed decreased ventricular postischemic fibrosis reflecting reduced accumulation of myofibroblasts. Ex vivo, myeloperoxidase was demonstrated to induce fibroblast-to-myofibroblast transdifferentiation by activation of p38 mitogen-activated protein kinases resulting in upregulated collagen generation. In support of our experimental findings, baseline myeloperoxidase plasma levels were independently associated with a history of ventricular arrhythmias, sudden cardiac death, or implantable cardioverter-defibrillator implantation in a cohort of 2622 stable patients with an ejection fraction >35% undergoing elective diagnostic cardiac evaluation. CONCLUSIONS Myeloperoxidase emerges as a crucial mediator of postischemic myocardial remodeling and may evolve as a novel pharmacological target for secondary disease prevention after myocardial ischemia.
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