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Bhattal G, Alom M, Rawitscher D, Kabra N, Yousif A, George T, Afzal A. Successful Surgical and Percutaneous Ventricular Tachycardia Ablation for Heartmate-3 LVAD Management: A Case Series. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.827] [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: 04/05/2023] Open
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Harada R, Al-Abboud O, Kazem A, George T, Potluri S, Szerlip M, Ejiofor J, Harrington K, Schaffer J, Kabra N, Rawitscher D, Afzal A. Transcatheter Aortic Valve-In-Valve Implantation in Patients with Left Ventricular Assisted Device. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.794] [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: 04/05/2023] Open
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Kluis A, Afzal A, DiMaio J, Kabra N, Rawitscher D, George T. Preoperative Pulmonary Function is Associated with Left Ventricular Assist Device Outcomes. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.1076] [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: 04/05/2023] Open
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Al-Abboud O, Harada R, Alom M, Bhattal G, Kabra N, Rawitscher D, Afzal A, Yousif A, George T. Successful Ventricular Tachycardia Ablation in a Patient with Biventricular Support Post Heartmate 3 Implantation. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.799] [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: 04/05/2023] Open
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Alom M, Bhattal G, Al-Abboud O, Alex M, Salih M, Kazem A, Kabra N, Rawitscher D, George T, Afzal A. Hemi-Diaphragmatic Plication in LVAD Patients with Post-Implantation Diaphragm Paralysis. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.840] [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: 04/05/2023] Open
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Harada R, Daniel B, George T, Bhattal G, Alom M, Kabra N, Rawitscher D, Afzal A. Hemodynamic Optimization in Patients With a Durable Leftventricular Assisted Device with CardioMEMS. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.831] [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: 04/05/2023] Open
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Puzzovio PG, Pahima H, George T, Mankuta D, Eliashar R, Tiligada E, Levy BD, Levi-Schaffer F. Mast cells contribute to the resolution of allergic inflammation by releasing resolvin D1. Pharmacol Res 2023; 189:106691. [PMID: 36773709 PMCID: PMC10285510 DOI: 10.1016/j.phrs.2023.106691] [Citation(s) in RCA: 2] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 02/03/2023] [Accepted: 02/06/2023] [Indexed: 02/12/2023]
Abstract
BACKGROUND Mast cells are initiators and main effectors of allergic inflammation, together with eosinophils, with whom they can interact in a physical and soluble cross-talk with marked pro-inflammatory features, the Allergic Effector Unit. The pro-resolution role of mast cells, alone or in co-culture with eosinophils, has not been characterized yet. OBJECTIVES We aimed to investigate select pro-resolution pathways in mast cells in vitro and in vivo in allergic inflammation. METHODS In vitro, we employed human and murine mast cells and analyzed release of resolvin D1 and expression of 15-lipoxygenase after IgE-mediated activation. We performed co-culture of IgE-activated mast cells with peripheral blood eosinophils and investigated 15-lipoxygenase expression and Resolvin D1 release. In vivo, we performed Ovalbumin/Alum and Ovalbumin/S. aureus enterotoxin B allergic peritonitis model in Wild Type mice following a MC "overshoot" protocol. RESULTS We found that IgE-activated mast cells release significant amounts of resolvin D1 30 min after activation, while 15-lipoxygenase expression remained unchanged. Resolvin D1 release was found to be decreased in IgE-activated mast cells co-cultured with peripheral blood eosinophils for 30 min In vivo, mast cell-overshoot mice exhibited a trend of reduced inflammation, together with increased peritoneal resolvin D1 release. CONCLUSIONS Mast cells can actively contribute to resolution of allergic inflammation by releasing resolvin D1.
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Affiliation(s)
- Pier Giorgio Puzzovio
- Pharmacology and Experimental Therapeutics Unit, School of Pharmacy, Institute for Drug Research, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Hadas Pahima
- Pharmacology and Experimental Therapeutics Unit, School of Pharmacy, Institute for Drug Research, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Tresa George
- Pharmacology and Experimental Therapeutics Unit, School of Pharmacy, Institute for Drug Research, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - David Mankuta
- Department of Obstetrics and Gynecology, Hadassah Hebrew University Medical Center, Jerusalem, Israel
| | - Ron Eliashar
- Department of Otolaryngology / Head and Neck Surgery, Hadassah Hebrew University Medical Center and the Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Ekaterini Tiligada
- Pharmacology and Experimental Therapeutics Unit, School of Pharmacy, Institute for Drug Research, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel; Department of Pharmacology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Bruce D Levy
- Pulmonary and Critical Care Medicine, Department of Internal Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Francesca Levi-Schaffer
- Pharmacology and Experimental Therapeutics Unit, School of Pharmacy, Institute for Drug Research, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel.
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Papadopoulos K, Li T, Lakhani N, Powderly J, George T, Teoh D, Kilari D, Giaccone G, Sanborn R, Ghamande S, LoRusso P, Gibney G, Ma VL, Yalamanchili K, Brown J, Mota N, Tasillo Kadra C, Umiker B, Xiao X, Trehu E. 172P Phase I study of JTX-8064, a LILRB2 (ILT4) inhibitor, as monotherapy and combination with pimivalimab (pimi), a PD-1 inhibitor (PD-1i), in patients (pts) with advanced solid tumors. Immuno-Oncology and Technology 2022. [DOI: 10.1016/j.iotech.2022.100284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Cherian L, Varghese L, Rupa V, Bright R, Abraham L, Panicker R, R. N, Peter J, Nayak A, Shyam A, Varghese G, Manesh A, Karuppusami R, George K, George T, Lenin A, Hansdak S, I. R, Michael J, Ninan M, Thomas M, Kurian R, Mammen S, Kurien R. Rhino-orbito-cerebral mucormycosis: patient characteristics in pre-COVID-19 and COVID-19 period. Rhinology 2022; 60:427-434. [DOI: 10.4193/rhin22.099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Background: Rhino-orbito-cerebral-mucormycosis (ROCM), a rare and potentially fatal disease was seen in increasing numbers during the COVID-19 pandemic. This study describes and compares the patient characteristics and outcomes in COVID-19 associated mucormycosis (CAM) and non-COVID-19 mucormycosis (non-CAM). Methodology: CAM patients (24 cases) were recruited from the COVID-19 period and non-CAM (24 controls) from the pre-COVID-19 period. Clinical data of the CAM group was collected retrospectively with 3 month outcomes prospectively. The non-CAM group data was collected retrospectively. Patient characteristics were compared and risk factors for mortality in ROCM were assessed. Results: Orbital symptoms [altered vision, restricted eye movements, ptosis] and intracranial involvement were higher in CAM patients on presentation. Similarly, the radiological involvement of orbit (orbital apex, superior orbital fissure) and intracranial cavity (intracranial thrombosis, cavernous sinus) was also higher in CAM patients. Newly detected diabetes was found only in CAM patients (29.2%). Although univariate analysis suggested an increased mortality risk in ROCM patients with orbital involvement, the multivariate analysis showed no increased risk with any of the parameters assessed, including COVID-19 positivity. Conclusions: Compared to the non-CAM, the disease presentation was severe in CAM with higher frequency of orbital and intracranial involvement. However, with early detection and treatment, the short term survival was comparable in both groups.
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Salem M, Kopetz S, El-Refai S, Tabernero J, Sinicrope F, Tie J, George T, Van Cutsem E, Mauer E, Lonardi S, André T, Overman M, Foureau D. LBA SO-34 Impact of BRAF-V600E mutation on immunologic characteristics of the tumor microenvironment (TME) and associated genomic alterations in patients with microsatellite instability-high (MSI-H) or mismatch-repair–deficient (dMMR) colorectal cancer (CRC). Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.04.441] [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: 11/01/2022] Open
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Gaur P, Zaffran I, George T, Alekberli FR, Ben-Zimra M, Levi-Schaffer F. The regulatory role of eosinophils in viral, bacterial, and fungal infections. Clin Exp Immunol 2022; 209:72-82. [PMID: 35467728 PMCID: PMC9307229 DOI: 10.1093/cei/uxac038] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [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: 11/03/2021] [Revised: 03/15/2022] [Accepted: 04/24/2022] [Indexed: 12/14/2022] Open
Abstract
Eosinophils are innate immune cells typically associated with allergic and parasitic diseases. However, in recent years, eosinophils have also been ascribed a role in keeping homeostasis and in fighting several infectious diseases. Indeed, these cells circulate as mature cells in the blood and can be quickly recruited to the infected tissue. Moreover, eosinophils have all the necessary cellular equipment such as pattern recognition receptors (PRRs), pro-inflammatory cytokines, anti-bacterial proteins, and DNA traps to fight pathogens and promote an efficient immune response. This review summarizes some of the updated information on the role of eosinophils' direct and indirect mediated interactions with pathogens.
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Affiliation(s)
- Pratibha Gaur
- Pharmacology and Experimental Therapeutics Unit, School of Pharmacy, Institute for Drug Research, Faculty of Medicine, The Hebrew University of Jerusalem, Israel
| | - Ilan Zaffran
- Pharmacology and Experimental Therapeutics Unit, School of Pharmacy, Institute for Drug Research, Faculty of Medicine, The Hebrew University of Jerusalem, Israel
| | - Tresa George
- Pharmacology and Experimental Therapeutics Unit, School of Pharmacy, Institute for Drug Research, Faculty of Medicine, The Hebrew University of Jerusalem, Israel
| | - Fidan Rahimli Alekberli
- Pharmacology and Experimental Therapeutics Unit, School of Pharmacy, Institute for Drug Research, Faculty of Medicine, The Hebrew University of Jerusalem, Israel
| | - Micha Ben-Zimra
- Pharmacology and Experimental Therapeutics Unit, School of Pharmacy, Institute for Drug Research, Faculty of Medicine, The Hebrew University of Jerusalem, Israel
| | - Francesca Levi-Schaffer
- Pharmacology and Experimental Therapeutics Unit, School of Pharmacy, Institute for Drug Research, Faculty of Medicine, The Hebrew University of Jerusalem, Israel
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Alom M, Salih M, Bhattal G, Kabra N, Rawitscher D, George T, Afzal A. Right Ventricular Optimization with Impella Support Prior to Left Ventricular Assist Device Implantation. J Heart Lung Transplant 2022. [DOI: 10.1016/j.healun.2022.01.1433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Clifford R, George T, Button F, Burgess R. Are MSc (pre-reg) Physiotherapy students likely to promote parkrun as a social form of physical activity? A pilot study. Physiotherapy 2021. [DOI: 10.1016/j.physio.2021.10.050] [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: 10/19/2022]
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14
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Bertino E, Presley C, Otterson G, Owen D, He K, Carbone D, George T. EP1.12-38 Retrospective Analysis of Immunotherapy Utilization in Advanced Small Cell Carcinoma at an Academic Cancer Center. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.2281] [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: 10/25/2022]
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Liu MC, Sun Y, Ramirez A, Campton D, George T, Haselkorn KE, Clein A, Gadi V, Sabath D, Kaldjian E. Abstract P3-01-11: A novel six-parameter assay for comprehensive phenotyping of circulating tumor cells. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p3-01-11] [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: 11/16/2022]
Abstract
Abstract
Background. The presence and number of circulating tumor cells (CTCs) are prognostic for breast cancer treatment outcome. Direct imaging assays traditionally employ four markers to identify canonical epithelial CTCs: nucleus, exclusion (CD45), and inclusion (EpCAM and cytokeratin). There is intense interest in the ability to phenotype CTCs in order to provide a noninvasive means by which to predict treatment benefit from endocrine therapy and/or HER2-directed therapy in breast cancer. To address this, a 6-parameter assay for detection of ER and HER2 expression on CTCs was developed. We applied this assay to four well characterized breast cancer cell lines representative of various ER and HER2 phenotypes. Methods. BT474, MCF-7, SKBR3, or MDA-MB-231 cells were spiked into peripheral blood from healthy donors and processed using the AccuCyte® sample preparation system; nucleated cells, including CTCs, are captured onto glass slides (8 slides per 7.5 mL blood sample) for subsequent immunofluorescent staining. Slides were stained using the combined epithelial marker and ER/HER2 CTC assay and then analyzed with the CyteFinder® imaging system. CTCs were identified as nucleated cells with positive EpCAM and/or cytokeratin staining, and negative CD45 staining. ER and HER2 expression were assessed as present or absent. Results. All cell lines expressed both cytokeratin and EpCAM, except for MDA-MB-231 which was EpCAM-negative. The ER / HER2 expression patterns observed were consistent with reported phenotype: BT474 (+/+), MCF-7 (+/–), SKBR3 (–/+), and MDA-MB-231 (–/–). Conclusions. Identification of epithelial CTCs and phenotypic characterization of ER and HER2 status are feasible in a combined assay applied to a single blood sample. This approach has implications for efficiency and cost effectiveness, which are of particular importance given the interest in longitudinal testing. Assay evaluation is currently underway using blood samples from breast cancer patients with known receptor status, treatment history, and clinical outcomes. Results will be available for presentation at the meeting.
Citation Format: Liu MC, Sun Y, Ramirez A, Campton D, George T, Haselkorn KE, Clein A, Gadi V, Sabath D, Kaldjian E. A novel six-parameter assay for comprehensive phenotyping of circulating tumor cells [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P3-01-11.
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Affiliation(s)
- MC Liu
- Mayo Clinic, Rochester, MN; RareCyte, Inc., Seattle, WA; University of Washington, Seattle, WA
| | - Y Sun
- Mayo Clinic, Rochester, MN; RareCyte, Inc., Seattle, WA; University of Washington, Seattle, WA
| | - A Ramirez
- Mayo Clinic, Rochester, MN; RareCyte, Inc., Seattle, WA; University of Washington, Seattle, WA
| | - D Campton
- Mayo Clinic, Rochester, MN; RareCyte, Inc., Seattle, WA; University of Washington, Seattle, WA
| | - T George
- Mayo Clinic, Rochester, MN; RareCyte, Inc., Seattle, WA; University of Washington, Seattle, WA
| | - KE Haselkorn
- Mayo Clinic, Rochester, MN; RareCyte, Inc., Seattle, WA; University of Washington, Seattle, WA
| | - A Clein
- Mayo Clinic, Rochester, MN; RareCyte, Inc., Seattle, WA; University of Washington, Seattle, WA
| | - V Gadi
- Mayo Clinic, Rochester, MN; RareCyte, Inc., Seattle, WA; University of Washington, Seattle, WA
| | - D Sabath
- Mayo Clinic, Rochester, MN; RareCyte, Inc., Seattle, WA; University of Washington, Seattle, WA
| | - E Kaldjian
- Mayo Clinic, Rochester, MN; RareCyte, Inc., Seattle, WA; University of Washington, Seattle, WA
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George T, Chakraborty M, Giembycz MA, Newton R. A bronchoprotective role for Rgs2 in a murine model of lipopolysaccharide-induced airways inflammation. Allergy Asthma Clin Immunol 2018; 14:40. [PMID: 30305828 PMCID: PMC6166284 DOI: 10.1186/s13223-018-0266-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Accepted: 05/22/2018] [Indexed: 02/07/2023] Open
Abstract
Background Asthma exacerbations are associated with the recruitment of neutrophils to the lungs. These cells release proteases and mediators, many of which act at G protein-coupled receptors (GPCRs) that couple via Gq to promote bronchoconstriction and inflammation. Common asthma therapeutics up-regulate expression of the regulator of G protein signalling (RGS), RGS2. As RGS2 reduces signaling from Gq-coupled GPCRs, we have defined role(s) for this GTPase-activating protein in an acute neutrophilic model of lung inflammation. Methods Wild type and Rgs2−/− C57Bl6 mice were exposed to nebulized lipopolysaccharide (LPS). Lung function (respiratory system resistance and compliance) was measured using a SCIREQ flexivent small animal ventilator. Lung inflammation was assessed by histochemistry, cell counting and by cytokine and chemokine expression in bronchoalveolar lavage (BAL) fluid. Results Lipopolysaccharide inhalation induced transient airways hyperreactivity (AHR) and neutrophilic lung inflammation. While AHR and inflammation was greatest 3 h post-LPS exposure, BAL neutrophils persisted for 24 h. At 3 h post-LPS inhalation, multiple inflammatory cytokines (CSF2, CSF3, IL6, TNF) and chemokines (CCL3, CCL4, CXCL1, CXCL2) were highly expressed in the BAL fluid, prior to declining by 24 h. Compared to wild type counterparts, Rgs2−/− mice developed significantly greater airflow resistance in response to inhaled methacholine (MCh) at 3 h post-LPS exposure. At 24 h post-LPS exposure, when lung function was recovering in the wild type animals, MCh-induced resistance was increased, and compliance decreased, in Rgs2−/− mice. Thus, Rgs2−/− mice show AHR and stiffer lungs 24 h post-LPS exposure. Histological markers of inflammation, total and differential cell counts, and major cytokine and chemokine expression in BAL fluid were similar between wild type and Rgs2−/− mice. However, 3 and 24 h post-LPS exposure, IL12B expression was significantly elevated in BAL fluid from Rgs2−/− mice compared to wild type animals. Conclusions While Rgs2 is bronchoprotective in acute neutrophilic inflammation, no clear anti-inflammatory effect was apparent. Nevertheless, elevated IL12B expression in Rgs2−/− animals raises the possibility that RGS2 could dampen Th1 responses. These findings indicate that up-regulation of RGS2, as occurs in response to inhaled corticosteroids and long-acting β2-adrenoceptor agonists, may be beneficial in acute neutrophilic exacerbations of airway disease, including asthma. Electronic supplementary material The online version of this article (10.1186/s13223-018-0266-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Tresa George
- 1Airways Inflammation Research Group, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, AB T2N 4Z6 Canada
| | - Mainak Chakraborty
- 2Immunology Research Group, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, AB T2N 4Z6 Canada
| | - Mark A Giembycz
- 1Airways Inflammation Research Group, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, AB T2N 4Z6 Canada
| | - Robert Newton
- 1Airways Inflammation Research Group, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, AB T2N 4Z6 Canada
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Liao PH, Peng KP, Lin HC, George T, Li PW. Single-fabrication-step Ge nanosphere/SiO 2/SiGe heterostructures: a key enabler for realizing Ge MOS devices. Nanotechnology 2018; 29:205601. [PMID: 29469060 DOI: 10.1088/1361-6528/aab17b] [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] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We report channel and strain engineering of self-organized, gate-stacking heterostructures comprising Ge-nanosphere gate/SiO2/SiGe-channels. An exquisitely-controlled dynamic balance between the concentrations of oxygen, Si, and Ge interstitials was effectively exploited to simultaneously create these heterostructures in a single oxidation step. Process-controlled tunability of the channel length (5-95 nm diameters for the Ge-nanospheres), gate oxide thickness (2.5-4.8 nm), as well as crystal orientation, chemical composition and strain engineering of the SiGe-channel was achieved. Single-crystalline (100) Si1-x Ge x shells with Ge content as high as x = 0.85 and with a compressive strain of 3%, as well as (110) Si1-x Ge x shells with Ge content of x = 0.35 and corresponding compressive strain of 1.5% were achieved. For each crystal orientation, our high Ge-content, highly-stressed SiGe shells feature a high degree of crystallinity and thus, provide a core 'building block' required for the fabrication of Ge-based MOS devices.
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Affiliation(s)
- P H Liao
- Department of Electrical Engineering, National Central University, ChungLi, Taiwan, 32001, Republic of China
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George T, Bell M, Chakraborty M, Siderovski DP, Giembycz MA, Newton R. Protective Roles for RGS2 in a Mouse Model of House Dust Mite-Induced Airway Inflammation. PLoS One 2017; 12:e0170269. [PMID: 28107494 PMCID: PMC5249169 DOI: 10.1371/journal.pone.0170269] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Accepted: 12/30/2016] [Indexed: 12/16/2022] Open
Abstract
The GTPase-accelerating protein, regulator of G-protein signalling 2 (RGS2) reduces signalling from G-protein-coupled receptors (GPCRs) that signal via Gαq. In humans, RGS2 expression is up-regulated by inhaled corticosteroids (ICSs) and long-acting β2-adrenoceptor agonists (LABAs) such that synergy is produced in combination. This may contribute to the superior clinical efficacy of ICS/LABA therapy in asthma relative to ICS alone. In a murine model of house dust mite (HDM)-induced airways inflammation, three weeks of intranasal HDM (25 μg, 3×/week) reduced lung function and induced granulocytic airways inflammation. Compared to wild type animals, Rgs2-/- mice showed airways hyperresponsiveness (increased airways resistance and reduced compliance). While HDM increased pulmonary inflammation observed on hematoxylin and eosin-stained sections, there was no difference between wild type and Rgs2-/- animals. HDM-induced mucus hypersecretion was also unaffected by RGS2 deficiency. However, inflammatory cell counts in the bronchoalveolar lavage fluid of Rgs2-/- animals were significantly increased (57%) compared to wild type animals and this correlated with increased granulocyte (neutrophil and eosinophil) numbers. Likewise, cytokine and chemokine (IL4, IL17, IL5, LIF, IL6, CSF3, CXCLl, CXCL10 and CXCL11) release was increased by HDM exposure. Compared to wild type, Rgs2-/- animals showed a trend towards increased expression for many cytokines/chemokines, with CCL3, CCL11, CXCL9 and CXCL10 being significantly enhanced. As RGS2 expression was unaffected by HDM exposure, these data indicate that RGS2 exerts tonic bronchoprotection in HDM-induced airways inflammation. Modest anti-inflammatory and anti-remodelling roles for RGS2 are also suggested. If translatable to humans, therapies that maximize RGS2 expression may prove advantageous.
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Affiliation(s)
- Tresa George
- Airways Inflammation Research Group, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, Alberta, Canada
| | - Matthew Bell
- Airways Inflammation Research Group, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, Alberta, Canada
| | - Mainak Chakraborty
- Immunology Research Group, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, Alberta, Canada
| | - David P. Siderovski
- Blanchette Rockefeller Neuroscience Institute, West Virginia University, Morgantown, West Virginia, United States of America
| | - Mark A. Giembycz
- Airways Inflammation Research Group, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, Alberta, Canada
| | - Robert Newton
- Airways Inflammation Research Group, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, Alberta, Canada
- * E-mail:
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Steensma D, Abedi M, Bejar R, Cogle C, Foucar K, Garcia-Manero G, George T, Grinblatt D, Komrokji R, Maciejewski J, Pollyea D, Roboz G, Savona M, Scott B, Sekeres M, Thompson M, Sugrue M, Swern A, Nifenecker M, Erba H. 249 CONNECT MDS AND AML: THE MYELODYSPLASTIC SYNDROMES (MDS) AND ACUTE MYELOID LEUKEMIA (AML) DISEASE REGISTRY. Leuk Res 2015. [DOI: 10.1016/s0145-2126(15)30250-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Varghese T, Mathew T, George T, Beevi S, Xavier G. Persistence and dissipation of neonicotinoid insecticides on chilli fruits. Quality Assurance and Safety of Crops & Foods 2015. [DOI: 10.3920/qas2013.0265] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- T.S. Varghese
- Directorate of Medicinal and Aromatic Plants Research, Boriavi, 387310 Anand, Gujarat, India
| | - T.B. Mathew
- Pesticide Residue Research and Analytical Laboratory, All India Network Project (AINP) on Pesticide Residues, College of Agriculture, Vellayani, 695522 Thiruvananthapuram, Kerala, India
| | - T. George
- Pesticide Residue Research and Analytical Laboratory, All India Network Project (AINP) on Pesticide Residues, College of Agriculture, Vellayani, 695522 Thiruvananthapuram, Kerala, India
| | - S.N. Beevi
- Pesticide Residue Research and Analytical Laboratory, All India Network Project (AINP) on Pesticide Residues, College of Agriculture, Vellayani, 695522 Thiruvananthapuram, Kerala, India
| | - G. Xavier
- Pesticide Residue Research and Analytical Laboratory, All India Network Project (AINP) on Pesticide Residues, College of Agriculture, Vellayani, 695522 Thiruvananthapuram, Kerala, India
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Chen KH, Wang CC, Lai WT, George T, Li PW. The pivotal role of oxygen interstitials in the dynamics of growth and movement of germanium nanocrystallites. CrystEngComm 2015. [DOI: 10.1039/c5ce00991j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An unusual “symbiotic” chain reaction is activated by oxygen interstitials acting in concert with Ge and Si interstitials, inducing the coalescence of sparsely-distributed Ge nanocrystallites and their autonomous migration within SiO2/Si3N4layers.
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Affiliation(s)
- K. H. Chen
- Department of Electrical Engineering and Center for Nano Science and Technology
- National Central University
- ChungLi, Republic of China
| | - C. C. Wang
- Department of Electrical Engineering and Center for Nano Science and Technology
- National Central University
- ChungLi, Republic of China
| | - W. T. Lai
- Department of Electrical Engineering and Center for Nano Science and Technology
- National Central University
- ChungLi, Republic of China
- Department of Electronics Engineering
- National Chiao Tung University
| | - T. George
- Department of Electrical Engineering and Center for Nano Science and Technology
- National Central University
- ChungLi, Republic of China
| | - P. W. Li
- Department of Electrical Engineering and Center for Nano Science and Technology
- National Central University
- ChungLi, Republic of China
- Department of Electronics Engineering
- National Chiao Tung University
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Price S, George T, Pinilla-Ibarz J. Momelotinib hydrochloride. JAK1/JAK2 inhibitor, Treatment of myelofibrosis, Treatment of pancreatic cancer. DRUG FUTURE 2015. [DOI: 10.1358/dof.2015.40.9.2345579] [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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BinMahfouz H, Borthakur B, Yan D, George T, Giembycz MA, Newton R. Superiority of combined phosphodiesterase PDE3/PDE4 inhibition over PDE4 inhibition alone on glucocorticoid- and long-acting β2-adrenoceptor agonist-induced gene expression in human airway epithelial cells. Mol Pharmacol 2014; 87:64-76. [PMID: 25324049 DOI: 10.1124/mol.114.093393] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Glucocorticoids, also known as corticosteroids, induce effector gene transcription as a part of their anti-inflammatory mechanisms of action. Such genomic effects can be significantly enhanced by long-acting β2-adrenoceptor agonists (LABAs) and may contribute to the clinical superiority of inhaled corticosteroid (ICS)/LABA combinations in asthma and chronic obstructive pulmonary disease (COPD) over ICSs alone. Using models of cAMP- and glucocorticoid-induced transcription in human bronchial epithelial BEAS-2B cells, we show that combining inhibitors of phosphodiesterase (PDE) 3 and PDE4 provides greater benefits compared with inhibiting either PDE alone. In respect to cAMP-dependent transcription, inhibitors of PDE3 (siguazodan, cilostazol) and PDE4 (rolipram, GSK256066, roflumilast N-oxide) each sensitized to the LABA, formoterol. This effect was magnified by dual PDE3 and PDE4 inhibition. Siguazodan plus rolipram was also more effective at inducing cAMP-dependent transcription than either inhibitor alone. Conversely, the concentration-response curve describing the enhancement of dexamethasone-induced, glucocorticoid response element-dependent transcription by formoterol was displaced to the left by PDE4, but not PDE3, inhibition. Overall, similar effects were described for bona fide genes, including RGS2, CD200, and CRISPLD2. Importantly, the combination of siguazodan plus rolipram prolonged the duration of gene expression induced by formoterol, dexamethasone, or dexamethasone plus formoterol. This was most apparent for RGS2, a bronchoprotective gene that may also reduce the proinflammatory effects of constrictor mediators. Collectively, these data provide a rationale for the use of PDE3 and PDE4 inhibitors in the treatment of COPD and asthma where they may enhance, sensitize, and prolong the effects of LABA/ICS combination therapies.
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Affiliation(s)
- Hawazen BinMahfouz
- Airways Inflammation Research Group, Snyder Institute for Chronic Diseases, Faculty of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Bibhusana Borthakur
- Airways Inflammation Research Group, Snyder Institute for Chronic Diseases, Faculty of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Dong Yan
- Airways Inflammation Research Group, Snyder Institute for Chronic Diseases, Faculty of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Tresa George
- Airways Inflammation Research Group, Snyder Institute for Chronic Diseases, Faculty of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Mark A Giembycz
- Airways Inflammation Research Group, Snyder Institute for Chronic Diseases, Faculty of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Robert Newton
- Airways Inflammation Research Group, Snyder Institute for Chronic Diseases, Faculty of Medicine, University of Calgary, Calgary, Alberta, Canada
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Camp NJ, Lin WY, Bigelow A, Parry MA, Mosbruger T, Burghel G, Rajamanickam V, Rigas SH, Cosby R, Connley D, Wang G, George T, Waller R, Cannon-Albright LA, Jones B, Sargent R, Reed MW, Cox A. Abstract 3267: Targeted DNA and RNA sequencing identifies breast cancer risk variants associated with differential expression of CASP8 and CFLAR/CASP10. Epidemiology 2014. [DOI: 10.1158/1538-7445.am2014-3267] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Kozlovsky V, Krysa A, Skyasyrsky Y, Popov Y, Abare A, Mack M, Keller S, Mishra UK, Coldren L, DenBaars S, Tiberi MD, George T. Electron Beam Pumped MQW InGaN/GaN Laser. ACTA ACUST UNITED AC 2014. [DOI: 10.1557/s1092578300001642] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
E-beam pumped lasers are attractive for Laser Cathode Ray Tubes (LCRT) in projection displays and a variety of applications typically associated with optically pumped lasers. For the first time an InGaN/GaN multiple quantum well (MQW) in-plane laser pumped by surface normal pulse and scanning electron beams was demonstrated. Pumping at room temperature (RT) and 80 K showed peak stimulated emission wavelengths of 402 and 409 nm with a full width half maximum (FWHM) of 0.6 nm and 1.2 nm, respectively. The threshold electron beam current densities have been estimated as 60 A/cm2 for 35 keV electron energy at 80 K using scanning e-beam pumping and 200-300 A/cm2 at RT using pulsed e-beam pumping with a maximum electron energy of 150 keV. At 80 K, light output of 150 mW was measured out of one facet at an e-beam current of 1.7 mA.
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Charalampaki C, Eyth C, Morgan M, Charalampaki C, Eyth C, Morgan M, Charalampaki C, Eyth C, Morgan M, Ogiwara H, Kiyotani C, Terashima K, Morota N, Charalampaki C, Igressa A, Igressa A, Charalampaki C, Pettorini B, Pizer B, Kanwar A, Avula S, Mallucci C, Leroy HA, Baroncini M, Delestret I, Vinchon M, Kato T, Hankinson T, Dudley R, Poonia S, Torok M, Handler M, Liu A, Harter D, Karajanis M, Wisoff J, Weiner H, Toidze I, Tsikarishvili V, Lobjanidze N, Elizbarashvili I, Akiashvili N, Maisuradze T, Jaiswal A, Jaiswal S, Mehrotra A, Srivastava A, Sahu R, Behari S, Jaiswal S, Jaiswal A, Mehrotra A, Behari; S, Hankinson T, Curry D, Honeycutt J, O'Neill B, Handler M, George T, Gerber NU, Muller A, Bozinov O, Berger C, Grotzer MA, Kamaly-Asl I, Alston R, McCabe M, Birch J, Gattamaneni R, Estlin E, Coelho G, Kunsler F, Lessa L, Epelman S, Zanon N. NEUROSURGERY. Neuro Oncol 2014; 16:i105-i108. [PMCID: PMC4046293 DOI: 10.1093/neuonc/nou077] [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: 01/02/2024] Open
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Bourner G, De la Salle B, George T, Tabe Y, Baum H, Culp N, Keng TB. ICSH guidelines for the verification and performance of automated cell counters for body fluids. Int J Lab Hematol 2014; 36:598-612. [DOI: 10.1111/ijlh.12196] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2013] [Accepted: 01/02/2014] [Indexed: 11/28/2022]
Affiliation(s)
- G. Bourner
- Gamma Dynacare Medical Laboratories; Brampton ON Canada
| | - B. De la Salle
- UK National External Quality Assessment Scheme for General Haematology; Watford UK
| | - T. George
- Department of Pathology; University of New Mexico; Albuquerque NM USA
| | - Y. Tabe
- Department of Clinical Laboratory Medicine; Juntendo University School of Medicine; Toyko Japan
- Japanese Society for Laboratory Hematology; Standardization committee; Tokyo Japan
| | - H. Baum
- Institut für Laboratoriumsmedizin; Regionale Kliniken Holding RKH GmbH; Ludwigsburg Germany
| | - N. Culp
- Trillium Diagnostics; Bangor ME USA
| | - T. B. Keng
- Sullivan Nicolaides Pathology; Brisbane QLD Australia
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Holden NS, George T, Rider CF, Chandrasekhar A, Shah S, Kaur M, Johnson M, Siderovski DP, Leigh R, Giembycz MA, Newton R. Induction of regulator of G-protein signaling 2 expression by long-acting β2-adrenoceptor agonists and glucocorticoids in human airway epithelial cells. J Pharmacol Exp Ther 2013; 348:12-24. [PMID: 24163441 DOI: 10.1124/jpet.113.204586] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
In asthma and chronic obstructive pulmonary disease (COPD) multiple mediators act on Gαq-linked G-protein-coupled receptors (GPCRs) to cause bronchoconstriction. However, acting on the airway epithelium, such mediators may also elicit inflammatory responses. In human bronchial epithelial BEAS-2B cells (bronchial epithelium + adenovirus 12-SV40 hybrid), regulator of G-protein signaling (RGS) 2 mRNA and protein were synergistically induced in response to combinations of long-acting β2-adrenoceptor agonist (LABA) (salmeterol, formoterol) plus glucocorticoid (dexamethasone, fluticasone propionate, budesonide). Equivalent responses occurred in primary human bronchial epithelial cells. Concentrations of glucocorticoid plus LABA required to induce RGS2 expression in BEAS-2B cells were consistent with the levels achieved therapeutically in the lungs. As RGS2 is a GTPase-activating protein that switches off Gαq, intracellular free calcium ([Ca(2+)]i) flux was used as a surrogate of responses induced by histamine, methacholine, and the thromboxane receptor agonist U46619 [(Z)-7-[(1S,4R,5R,6S)-5-[(E,3S)-3-hydroxyoct-1-enyl]-3-oxabicyclo[2.2.1]heptan-6-yl]hept-5-enoic acid]. This was significantly attenuated by salmeterol plus dexamethasone pretreatment, or RGS2 overexpression, and the protective effect of salmeterol plus dexamethasone was abolished by RGS2 RNA silencing. Although methacholine and U46619 induced interleukin-8 (IL-8) release and this was inhibited by RGS2 overexpression, the repression of U46619-induced IL-8 release by salmeterol plus dexamethasone was unaffected by RGS2 knockdown. Given a role for Gαq-mediated pathways in inducing IL-8 release, we propose that RGS2 acts redundantly with other effector processes to repress IL-8 expression. Thus, RGS2 expression is a novel effector mechanism in the airway epithelium that is induced by glucocorticoid/LABA combinations. This could contribute to the efficacy of glucocorticoid/LABA combinations in asthma and COPD.
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Affiliation(s)
- Neil S Holden
- Airways Inflammation Research Group, Snyder Institute for Chronic Diseases, Faculty of Medicine, University of Calgary, Calgary, Alberta, Canada (N.S.H., T.G., C.F.R., A.C., S.S., M.K., R.L., M.A.G., R.N.); GlaxoSmithKline Research and Development, Uxbridge, Middlesex, United Kingdom (M.J.); and Department of Physiology and Pharmacology, School of Medicine, West Virginia University, Morgantown, West Virginia (D.P.S.)
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George T, Cullen L, Parsonage W, Larsen P, Coverdale S, Ashover S, Bilesky J, Bailey K, Boulton B, Gibson J, Currie J. Use of an Accelerated Diagnostic Protocol in the Assessment of Emergency Department Patients with Possible Acute Coronary Syndrome. Heart Lung Circ 2013. [DOI: 10.1016/j.hlc.2013.05.127] [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]
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Lev-Ran S, Roerecke M, Le Foll B, George T, McKenzie K, Rehm J. 892 – The association between cannabis use and depression: a systematic review and meta-analysis of longitudinal studies. Eur Psychiatry 2013. [DOI: 10.1016/s0924-9338(13)76057-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Nichols R, George T, Zaiden R, Hochwald S, Awad Z, Ho M, Li Z, Mendenhall N, Mendenhall W, Hoppe B. EP-1089 PROTON THERAPY FOR PANCREATIC AND AMPULLARY CANCER IS ASSOCIATED WITH A LOW INCIDENCE OF GASTROINTESTINAL TOXICITY. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)71422-6] [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: 11/16/2022]
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Fayaz M, El-Sherify M, AboZlouf S, Nazmy N, George T, Samir S, El-Basmi A. 5094 POSTER Prognostic Factors of Triple Negative Breast Cancer – Still a Lot to Know. Eur J Cancer 2011. [DOI: 10.1016/s0959-8049(11)71536-2] [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: 10/17/2022]
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Samir SM, Fayaz MS, Elbasmi A, Motawy MM, Abuzallouf S, George T, Abdelhady M, Bedair A. Medullary carcinoma of the breast: ten year clinical experience of the Kuwait cancer control centre. Gulf J Oncolog 2011:45-52. [PMID: 21724529] [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] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/23/2011] [Indexed: 05/31/2023]
Abstract
BACKGROUND Medullary carcinomas of the breast account for fewer than 7% of all invasive breast cancers. Some investigators include medullary carcinomas in the favourable histologic subtype, despite its aggressive histologic appearance. However, others fail to confirm its favourable prognosis. METHODS This was a retrospective analysis of sixty-one (61) cases of breast cancer cases diagnosed with Medullary Carcinoma, presenting to the Kuwait Cancer Control Center between 1995 and 2005. RESULTS Median survival time was 122 months and the seven-year disease free survival was 82%. Overall survival rate was not assessed as no cases died during the study period. No cases were metastatic from the start and only eight cases developed metastases, local recurrence or contralateral breast primary. 68.8% of the cases were Stage I or IIA (i.e. no lymph node affection). CONCLUSION There is no overt favourable prognosis of medullary carcinoma when compared to invasive ductal carcinoma. Prognosis is more related to stage than histologic subtyping. The majority of cases were negative estrogen and progesterone receptor status and node negative.
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Affiliation(s)
- S M Samir
- Radiation Oncology Department, Kuwait Cancer Control Center, Kuwait.
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Gotlib JR, Kluin-Nelemans H, Mauro MJ, Hermine O, Hexner EO, Lipton JH, Awan FT, Nikolova ZG, Gross SH, Dutreix C, Dharan B, George T, Horny P, Akin C, Hartmann K, Valent P, Reiter A. A global phase II, single-arm, open-label study to determine the efficacy of midostaurin in patients with aggressive systemic mastocytosis (ASM) or mast cell leukemia (MCL) with or without an associated hematologic clonal nonmast cell lineage disease (AHNMD). J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.tps200] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Jin Y, Alimbetov D, George T, Gordon MH, Lovegrove JA. A randomised trial to investigate the effects of acute consumption of a blackcurrant juice drink on markers of vascular reactivity and bioavailability of anthocyanins in human subjects. Eur J Clin Nutr 2011; 65:849-56. [DOI: 10.1038/ejcn.2011.55] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Natarajan S, Mahajan S, Boaz K, George T. Prediction of lymph node metastases by preoperative nuclear morphometry in oral squamous cell carcinoma: a comparative image analysis study. Indian J Cancer 2011; 47:406-11. [PMID: 21131754 DOI: 10.4103/0019-509x.73580] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
CONTEXT Prediction of metastases of oral squamous cell carcinoma (OSCC) using incisional biopsy. AIMS To assess the efficacy of nuclear morphometry in predicting the nodal metastases of OSCC and to compare manual and computer-based image analyses. MATERIALS AND METHODS Sixteen cases of moderately differentiated squamous cell carcinoma (8 with metastasized lymph nodes and 8 node-negative cases) were examined using manual and computer-based image analyses. Nuclear area, perimeter, circular rate, larger to shorter axis ratio, and coefficient of variance of nuclear area (NACV) were calculated from 100 nuclei of the processed incisional biopsy specimen. STATISTICAL ANALYSIS The parameters were compared between the node positive and negative cases using Student's t test and with the level of lymph node involved using ANOVA test and Bonferroni's post hoc assessment. Manual and computer-based image analyses were compared by Spearman's correlation. RESULTS A significant variation between the node positive and negative groups was observed with respect to circular rate (P = 0.031) and NACV (P = 0.036). The nuclear area (P = 0.009), perimeter (P = 0.0001), circularity (P = 0.045), and larger to shorter diameter ratio (LS ratio) (P =0.02) were significantly different in the levels of the nodes involved. There was good a correlation between manual and computer-based analyses (Spearman's rho, 0.616-0.824) in nuclear size parameters and the circular rate had a negative correlation (-0.118, P = 0.664). Nuclear circularity was better assessed by computer-based analysis. CONCLUSION Preoperative morphometric assessment of the nuclear features may detect early cellular changes and thus, are useful in predicting nodal metastases in OSCC.
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Affiliation(s)
- S Natarajan
- Department of Oral Pathology, Manipal College of Dental Sciences, Mangalore, India.
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O’Donohue P, Dahl M, Colburn D, Rashford S, Cardwell R, George T, Larsen P, Williamson D, Callow D, Dooris M, Walters D, Raffel C, Pincus M, Hammett C. The Sunshine Coast STEMI Pilot: An Integrated Network Model for Immediate Transfer of Regional patients to a PCI-Capable Hospital. Heart Lung Circ 2011. [DOI: 10.1016/j.hlc.2011.05.373] [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: 10/18/2022]
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George T, Bishen K. Atypical ameloblastoma - an enigma in diagnosis: review of literature and report of a case. J Clin Exp Dent 2011. [DOI: 10.4317/jced.3.e60] [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: 11/05/2022] Open
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Holt RIG, Abdelrahman T, Hirsch M, Dhesi Z, George T, Blincoe T, Peveler RC. The prevalence of undiagnosed metabolic abnormalities in people with serious mental illness. J Psychopharmacol 2010; 24:867-73. [PMID: 19304868 DOI: 10.1177/0269881109102788] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [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: 11/17/2022]
Abstract
The prevalence of metabolic syndrome is increased 2-3-fold in people with serious mental illness (SMI). Monitoring of physical health in these individuals is poor, despite clear guidance from the National Institute of Health and Clinical Excellence. The aim of this study was to assess the proportion of people with SMI who had been screened for metabolic abnormalities within the previous year and in a further study to assess the prevalence of undiagnosed metabolic abnormalities in people who had not been screened. The notes and computer records of 100 patients with SMI from community and in-patient settings were evaluated. In a subsequent study, the prevalence of metabolic syndrome was assessed in 71 previously unscreened patients. The study was carried out at the psychiatric in-patient and out-patient units in Southampton and Winchester. The frequency of screening and prevalence of the metabolic syndrome as defined by the International Diabetes Federation (IDF) were assessed. There was documented evidence that the following cardiovascular risk factors had been measured in the previous year: blood pressure (32%), glucose (16%), lipids (9%) and weight (2%). In the metabolic abnormalities study, 41 of 71 (58%) patients were found to fulfil the IDF criteria for the metabolic syndrome. Two had previously undiagnosed diabetes. Twelve percent of patients had a greater than 20% risk of a cardiovascular event within the next 10 years. Despite clear guidance and a high prevalence of undiagnosed metabolic syndrome, screening rates for metabolic abnormalities in people with SMI remain low. Improved screening of metabolic complications should lead to better identification and treatment of this clinical problem.
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Affiliation(s)
- R I G Holt
- Endocrinology & Metabolism Sub-division, Developmental Origins of Adult Disease Division, University of Southampton, Southampton, UK.
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George T, Wen Q, Griffiths R, Ganesh A, Meuth M, Sanders CM. Human Pif1 helicase unwinds synthetic DNA structures resembling stalled DNA replication forks. Nucleic Acids Res 2009; 37:6491-502. [PMID: 19700773 PMCID: PMC2770657 DOI: 10.1093/nar/gkp671] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [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] [Indexed: 12/02/2022] Open
Abstract
Pif-1 proteins are 5′→3′ superfamily 1 (SF1) helicases that in yeast have roles in the maintenance of mitochondrial and nuclear genome stability. The functions and activities of the human enzyme (hPif1) are unclear, but here we describe its DNA binding and DNA remodeling activities. We demonstrate that hPif1 specifically recognizes and unwinds DNA structures resembling putative stalled replication forks. Notably, the enzyme requires both arms of the replication fork-like structure to initiate efficient unwinding of the putative leading replication strand of such substrates. This DNA structure-specific mode of initiation of unwinding is intrinsic to the conserved core helicase domain (hPifHD) that also possesses a strand annealing activity as has been demonstrated for the RecQ family of helicases. The result of hPif1 helicase action at stalled DNA replication forks would generate free 3′ ends and ssDNA that could potentially be used to assist replication restart in conjunction with its strand annealing activity.
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Affiliation(s)
- Tresa George
- Institute for Cancer Studies, University of Sheffield, Beech Hill Road, Sheffield S10 2RX, UK
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Kowalczyk L, Shah P, George T, Lu L, Sarosi G, Beyth R, Sultan S. Impact of a simple intervention that improves colon cancer lymph node yield and assessement. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.e15058] [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: 11/20/2022] Open
Abstract
e15058 Background: The National Quality Forum has endorsed the 12 lymph node (LN) benchmark as a quality metric. Currently, less than 40% of institutions meet this requirement. The purpose of this study was to determine whether implementation of a simple pathology template with dedicated fields for LN reporting led to an increase in the number of colon cancer resections where >12 LNs were reported. Methods: A simple pathology template, derived from the College of American Pathology, using standardized terminology and dedicated fields for LN reporting was implemented in August 2007. Using a pre and post- test design, all consecutive pathology cases were retrospectively reviewed. Inclusion criteria consisted of all stage 0-IV colon cancer patients who underwent surgical resection at a single Veterans Affairs Medical Center. The primary outcome was the percentage of cases in which >12 LNs were assessed between the pre and post-template group. Age, gender, anatomic location, and stage were also collected. Statistical comparisons were made using chi-square and Fisher's exact t-test. Results: 111 pre-template and 71 post-template cases were analyzed. The majority of patients were Caucasian (74%) males (97%). There were no significant differences between the two groups (see Table 1 ), however there was a trend towards more right-sided colon cancers in the pre-template group. 51% of all pre-template pathology reports evaluated >12 LNs compared to 68% of post-template reports (33% improvement in LN yield; p=0.03). Conclusions: Examination of >12 LNs has important therapeutic and prognostic implications in colon cancer patients. Use of a standardized pathology template with dedicated fields for LN reporting is a simple intervention that can increase yield of LN reporting. This can have a significant impact for institutions striving to reach the 12 LN quality metric. [Table: see text] No significant financial relationships to disclose.
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Affiliation(s)
| | - P. Shah
- University of Florida, Gainesville, FL
| | - T. George
- University of Florida, Gainesville, FL
| | - L. Lu
- University of Florida, Gainesville, FL
| | - G. Sarosi
- University of Florida, Gainesville, FL
| | - R. Beyth
- University of Florida, Gainesville, FL
| | - S. Sultan
- University of Florida, Gainesville, FL
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Samir S, Fayaz MS, Motawy MM, Abuzallouf S, George T, Abdelhady MM, Bedair A. Medullary carcinoma of the breast: Ten year clinical experience of the Kuwait Cancer Control Centre. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.22188] [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: 11/20/2022] Open
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Voralia M, Fibich C, Katzman M, Danyluk P, George T, Doell H, Evjen A, vanden Berghe J, Briggs S. 186: Bortezomib Added to High-Dose Cyclophosphamide During Stem Cell Mobilization is Safe and Provides Effective Disease Control in Chemotherapy-Refractory Multiple Myeloma. Biol Blood Marrow Transplant 2008. [DOI: 10.1016/j.bbmt.2007.12.195] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Rimal J, Sumanth KN, Ongole R, George T, Chatterjee S. A rare presentation of oral pemphigus vulgaris as multiple pustules. Kathmandu Univ Med J (KUMJ) 2007; 5:541-545. [PMID: 18604092] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Pemphigus vulgaris is an autoimmune blistering disease affecting the mucous membrane and skin. Ulcers, vesicles, bulla, erosions are the common manifestations of the disease. It is uncommon to find multiple pustular lesions in the oral cavity. Here, we report the first case of multiple pustules involving the lateral borders of tongue, buccal mucosa, hard palate, soft palate, vestibule and the gingiva of a 53 year old male. Histopathologic and Immunofluoroscence study was suggestive of pemphigus vulgaris. The condition improved with systemic corticosteroid along with adjuvant therapy. Key words: pemphigus vulgaris, multiple pustules, immunofluorescence, corticosteroids.
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Affiliation(s)
- J Rimal
- Department of Oral Medicine and Radiology, Manipal College of Dental Sciences, Mangalore, India
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Pillai A, Teo P, George T, Mukhopadhyay A, Dejbakhsh-Jones S, Strober S. Alloantigen recognition is critical for CD8 T cell-mediated graft anti-tumor activity against murine BCL1 lymphoma after myeloablative bone marrow transplantation. Bone Marrow Transplant 2007; 40:487-97. [PMID: 17603512 DOI: 10.1038/sj.bmt.1705759] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The goal of the current study was to determine whether whole bone marrow cells or splenic CD8(+) T cells from C57BL/6 (H-2(b)) donor mice, which are tolerant to BALB/c (H-2(d)) alloantigens, are capable of mediating graft anti-tumor activity against a BALB/c B-cell lymphoma after injection into irradiated BALB/c hosts. The experimental results show that high doses of splenic CD8(+) T cells mixed with T cell-depleted bone marrow cells from C57BL/6 non-tolerant (normal) donors eliminate the BCL(1) B-cell lymphoma cells and induce lethal graft-versus-host disease (GVHD). CD8(+) T cells from tolerant donors simultaneously lose both their ability to induce GVHD and their anti-tumor activity. Whole bone marrow cell transplants from normal donors eliminated BCL(1) tumor cells without inducing GVHD, and bone marrow cells from tolerant donors failed to eliminate the tumor cells. The infused BCL(1) tumor cells expressed an immunogenic tumor-specific idiotype antigen disparate from host alloantigens, indicating that recognition of the tumor-specific antigen alone was insufficient to elicit graft anti-tumor activity from unimmunized allotolerant donor splenic CD8(+) T cells or whole bone marrow cells. We conclude that CD8(+) T cells from unimmunized normal donor mice require alloantigen recognition to mediate their anti-tumor activity following allogeneic BMT.
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Affiliation(s)
- A Pillai
- Division of Immunology and Rheumatology, Department of Medicine, Stanford University School of Medicine, Stanford, CA 94305-5166, USA
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Fayaz S, George T, Mohammad M, Samir S. Tumours associated with gastrointestinal stromal tumors (GIST): A case report. J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.20529] [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: 11/20/2022] Open
Abstract
20529 Background: Much progress has been made in the diagnosis and treatment of GIST but the rarity of second neoplasms in association with gastro intestinal tumours (GIST) have rarely been reported. Methods: We present three case reports of breast cancer, Hodgkin's disease and thyroid cancer associated with GIST Results: The first pt, aged 50 underwent left lumpectomy and axillary clearance for infiltrating ductal carcinoma. Estrogen and Progesterone receptors were positive. Adjuvant chemotherapy , radiotherapy and tamoxifen was administered .Three years later patent was operated for a sub mucous nodule in the stomach which was reported as GIST, CD117+ve,CD34 positive and the patient was followed up. The second pt, male aged 50 was operated for a large intrabdominal GIST tumour (16x16cm) arising from the stomach and later on referral found to have a Rt Supraclavicular node with a nodule in the thyroid. He under went total thyroidectomy with functional node dissection for papillary carcinoma. This was followed Radioactive iodine ablation and eltroxin. Three months later he presented with thoraco abdominal metastasis and treatment with Imatnib was begun, but he soon progressed and succumbed to his disease. The third pt, female, with a history of Hodgkin's disease treated with chemotherapy on follow up. Twelve years later the pt was subjected to extensive debulking for pelvic GIST (16cmx15cm).CD117 positve.She was kept on follow up. A ct chest abdomen and pelvis eight months following surgery was unremarkable. Conclusions: Very few cases have been reported in literature regarding association of second tumours with GIST .And no correlation can be made to generate a hypothesis regarding these associations. No significant financial relationships to disclose.
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Affiliation(s)
- S. Fayaz
- Kuwait Cancer Control Center, Kuwait
| | - T. George
- Kuwait Cancer Control Center, Kuwait
| | | | - S. Samir
- Kuwait Cancer Control Center, Kuwait
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Trocme SD, Leiferman KM, George T, Bonini S, Foster CS, Smit EE, Sra SK, Grabowski LR, Dohlman CH. Neutrophil and eosinophil participation in atopic and vernal keratoconjunctivitis. Curr Eye Res 2003; 26:319-25. [PMID: 12868012 DOI: 10.1076/ceyr.26.5.319.15437] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
PURPOSE A retrospective study was conducted at three centers to examine the participation of neutrophils and eosinophils in the inflammatory processes associated with atopic keratoconjunctivitis (AKC) and vernal keratoconjunctivitis (VKC). METHODS Conjunctival specimens were obtained from four patients with AKC, six with VKC, and five normal subjects. Indirect immunofluorescent staining was used to localize neutrophil elastase (NE) and eosinophil granule major basic protein (MBP) in serial sections of all specimens. RESULTS Specimens from both AKC and VKC patients revealed extracellular deposition of NE and MBP. Control specimens showed no or minimal extracellular NE, and no MBP. Statistical analysis demonstrated significantly greater extracellular MBP deposition in AKC specimens compared to controls (p = 0.009), and VKC specimens showed significantly greater staining for both extracellular MBP (p = 0.005) and NE (p = 0.006). CONCLUSIONS These results suggest that neutrophils, in addition to eosinophils, play an active role in the pathogenesis of AKC and VKC as evidenced by the extracellular deposition of their specific granule proteins.
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Affiliation(s)
- S D Trocme
- Department of Ophthalmology and Visual Sciences, University of Texas Medical Branch, 700 University Boulevard, Galveston, TX 77555-1106, USA.
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