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Mulloy SM, Aback EM, Gao R, Engel S, Pawaskar K, Win C, Moua A, Hillukka L, Lee AM. Subregion and sex differences in ethanol activation of cholinergic and glutamatergic cells in the mesopontine tegmentum. Sci Rep 2024; 14:46. [PMID: 38168499 PMCID: PMC10762073 DOI: 10.1038/s41598-023-50526-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Accepted: 12/20/2023] [Indexed: 01/05/2024] Open
Abstract
Ethanol engages cholinergic signaling and elicits endogenous acetylcholine release. Acetylcholine input to the midbrain originates from the mesopontine tegmentum (MPT), which is composed of the laterodorsal tegmentum (LDT) and the pedunculopontine tegmental nucleus (PPN). We investigated the effect of acute and chronic ethanol administration on cholinergic and glutamatergic neuron activation in the PPN and LDT in male and female mice. We show that ethanol activates neurons of the PPN and not the LDT in male mice. Chronic 15 daily injections of 2 g/kg ethanol induced Fos expression in cholinergic and glutamatergic PPN neurons in male mice, whereas ethanol did not increase cholinergic and glutamatergic neuronal activation in the LDT. A single acute 4 g/kg injection, but not a single 2 g/kg injection, induced cholinergic neuron activation in the male PPN but not the LDT. In contrast, acute or chronic ethanol at either dose or duration had no effect on the activation of cholinergic or glutamatergic neurons in the MPT of female mice. Female mice had higher baseline level of activation in cholinergic neurons compared with males. We also found a population of co-labeled cholinergic and glutamatergic neurons in the PPN and LDT which were highly active in the saline- and ethanol-treated groups in both sexes. These findings illustrate the complex differential effects of ethanol across dose, time point, MPT subregion and sex.
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Affiliation(s)
- S M Mulloy
- Graduate Program in Neuroscience, University of Minnesota, Minneapolis, MN, USA
| | - E M Aback
- Department of Pharmacology, University of Minnesota, Minneapolis, MN, USA
| | - R Gao
- Department of Pharmacology, University of Minnesota, Minneapolis, MN, USA
| | - S Engel
- Department of Pharmacology, University of Minnesota, Minneapolis, MN, USA
| | - K Pawaskar
- Department of Pharmacology, University of Minnesota, Minneapolis, MN, USA
| | - C Win
- Department of Pharmacology, University of Minnesota, Minneapolis, MN, USA
| | - A Moua
- Department of Pharmacology, University of Minnesota, Minneapolis, MN, USA
| | - L Hillukka
- Department of Pharmacology, University of Minnesota, Minneapolis, MN, USA
| | - A M Lee
- Department of Pharmacology, University of Minnesota, Minneapolis, MN, USA.
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Mulloy SM, Aback EM, Gao R, Engel S, Pawaskar K, Win C, Moua A, Hillukka L, Lee AM. Subregion and sex differences in ethanol activation of cholinergic and glutamatergic cells in the mesopontine tegmentum. bioRxiv 2023:2023.11.08.566053. [PMID: 38014248 PMCID: PMC10680559 DOI: 10.1101/2023.11.08.566053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
Ethanol engages cholinergic signaling and elicits endogenous acetylcholine release. Acetylcholine input to the midbrain originates from the mesopontine tegmentum (MPT), which is composed of the laterodorsal tegmentum (LDT) and the pedunculopontine tegmental nucleus (PPN). We investigated the effect of acute and chronic ethanol administration on cholinergic and glutamatergic neuron activation in the PPN and LDT in male and female mice. We show that ethanol selectively activates neurons of the PPN and not the LDT in male mice. Acute 4.0 g/kg and chronic 15 daily injections of 2.0 g/kg i.p. ethanol induced Fos expression in cholinergic and glutamatergic PPN neurons in male mice, whereas cholinergic and glutamatergic neurons of the LDT were unresponsive. In contrast, acute or chronic ethanol at either dose or duration had no effect on the activation of cholinergic or glutamatergic neurons in the MPT of female mice. Female mice had higher level of baseline activation in cholinergic neurons compared with males. We also found a population of co-labeled cholinergic and glutamatergic neurons in the PPN and LDT which were highly active in the saline- and ethanol-treated groups in both sexes. These findings illustrate the complex differential effects of ethanol across dose, time point, MPT subregion and sex.
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Affiliation(s)
- S M Mulloy
- Graduate Program in Neuroscience, University of Minnesota, Minneapolis, MN, USA
| | - E M Aback
- Department of Pharmacology, University of Minnesota, Minneapolis, MN, USA
| | - R Gao
- Department of Pharmacology, University of Minnesota, Minneapolis, MN, USA
| | - S Engel
- Department of Pharmacology, University of Minnesota, Minneapolis, MN, USA
| | - K Pawaskar
- Department of Pharmacology, University of Minnesota, Minneapolis, MN, USA
| | - C Win
- Department of Pharmacology, University of Minnesota, Minneapolis, MN, USA
| | - A Moua
- Department of Pharmacology, University of Minnesota, Minneapolis, MN, USA
| | - L Hillukka
- Department of Pharmacology, University of Minnesota, Minneapolis, MN, USA
| | - A M Lee
- Graduate Program in Neuroscience, University of Minnesota, Minneapolis, MN, USA
- Department of Pharmacology, University of Minnesota, Minneapolis, MN, USA
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Tan H, Gerchen MF, Bach P, Lee AM, Hummel O, Sommer W, Kirsch P, Kiefer F, Vollstädt-Klein S. Decoding fMRI alcohol cue reactivity and its association with drinking behaviour. BMJ Ment Health 2023; 26:e300639. [PMID: 36822819 PMCID: PMC10035780 DOI: 10.1136/bmjment-2022-300639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 02/10/2023] [Indexed: 02/25/2023]
Abstract
BACKGROUND Cue reactivity, the enhanced sensitivity to conditioned cues, is associated with habitual and compulsive alcohol consumption. However, most previous studies in alcohol use disorder (AUD) compared brain activity between alcohol and neutral conditions, solely as cue-triggered neural reactivity. OBJECTIVE This study aims to find the neural subprocesses during the processing of visual alcohol cues in AUD individuals, and how these neural patterns are predictive for relapse. METHODS Using cue reactivity and rating tasks, we separately modelled the patterns decoding the processes of visual object recognition and reward appraisal of alcohol cues with representational similarity analysis, and compared the decoding involvements (ie, distance between neural responses and hypothesised decoding models) between AUD and healthy individuals. We further explored connectivity between the identified neural systems and the whole brain and predicted relapse within 6 months using decoding involvements of the neural patterns. FINDINGS AUD individuals, compared with healthy individuals, showed higher involvement of motor-related brain regions in decoding visual features, and their reward, habit and executive networks were more engaged in appraising reward values. Connectivity analyses showed the involved neural systems were widely connected with higher cognitive networks during alcohol cue processing in AUD individuals, and decoding involvements of frontal eye fields and dorsolateral prefrontal cortex could contribute to relapse prediction. CONCLUSIONS These findings provide insight into how AUD individuals differently decode alcohol cues compared with healthy participants, from the componential processes of visual object recognition and reward appraisal. CLINICAL IMPLICATIONS The identified patterns are suggested as biomarkers and potential therapeutic targets in AUD.
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Affiliation(s)
- Haoye Tan
- Department of Addictive Behaviour and Addiction Medicine, Central Institute of Mental Health, Medical Faculty of Mannheim, Heidelberg University, Mannheim, Germany
| | - Martin Fungisai Gerchen
- Department of Clinical Psychology, Central Institute of Mental Health, Medical Faculty of Mannheim, Heidelberg University, Mannheim, Germany
- Bernstein Center for Computational Neuroscience Heidelberg/Mannheim, Mannheim, Germany
- Department of Psychology, Heidelberg University, Heidelberg, Germany
| | - Patrick Bach
- Department of Addictive Behaviour and Addiction Medicine, Central Institute of Mental Health, Medical Faculty of Mannheim, Heidelberg University, Mannheim, Germany
| | - Alycia M Lee
- Department of Addictive Behaviour and Addiction Medicine, Central Institute of Mental Health, Medical Faculty of Mannheim, Heidelberg University, Mannheim, Germany
| | - Oliver Hummel
- Faculty of Computer Science, Hochschule Mannheim, Mannheim, Germany
| | - Wolfgang Sommer
- Department of Addictive Behaviour and Addiction Medicine, Central Institute of Mental Health, Medical Faculty of Mannheim, Heidelberg University, Mannheim, Germany
- Institute of Psychopharmacology, Central Institute of Mental Health, Heidelberg University, Mannheim, Germany
- Bethanian Hospital for Psychiatry, Psychosomatics and Psychotherapy, Greifswald, Germany
| | - Peter Kirsch
- Department of Clinical Psychology, Central Institute of Mental Health, Medical Faculty of Mannheim, Heidelberg University, Mannheim, Germany
- Bernstein Center for Computational Neuroscience Heidelberg/Mannheim, Mannheim, Germany
- Department of Psychology, Heidelberg University, Heidelberg, Germany
| | - Falk Kiefer
- Department of Addictive Behaviour and Addiction Medicine, Central Institute of Mental Health, Medical Faculty of Mannheim, Heidelberg University, Mannheim, Germany
- Mannheim Center for Translational Neurosciences (MCTN), Medical Faculty of Mannheim, Heidelberg University, Mannheim, Germany
- Feuerlein Center on Translational Addiction Medicine, Heidelberg University, Heidelberg, Germany
| | - Sabine Vollstädt-Klein
- Department of Addictive Behaviour and Addiction Medicine, Central Institute of Mental Health, Medical Faculty of Mannheim, Heidelberg University, Mannheim, Germany
- Mannheim Center for Translational Neurosciences (MCTN), Medical Faculty of Mannheim, Heidelberg University, Mannheim, Germany
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Tan H, Hubertus S, Thomas S, Lee AM, Gerhardt S, Gerchen MF, Sommer WH, Kiefer F, Schad L, Vollstädt-Klein S. Association between iron accumulation in the dorsal striatum and compulsive drinking in alcohol use disorder. Psychopharmacology (Berl) 2023; 240:249-257. [PMID: 36577866 PMCID: PMC9879829 DOI: 10.1007/s00213-022-06301-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 12/16/2022] [Indexed: 12/30/2022]
Abstract
RATIONALE Brain iron accumulation has been observed in neuropsychiatric disorders and shown to be related to neurodegeneration. OBJECTIVES In this study, we used quantitative susceptibility mapping (QSM), an emerging MRI technique developed for quantifying tissue magnetic susceptibility, to examine brain iron accumulation in individuals with alcohol use disorder (AUD) and its relation to compulsive drinking. METHODS Based on our previous projects, QSM was performed as a secondary analysis with gradient echo sequence images, in 186 individuals with AUD and 274 healthy participants. Whole-brain susceptibility values were calculated with morphology-enabled dipole inversion and referenced to the cerebrospinal fluid. Then, the susceptibility maps were compared between AUD individuals and healthy participants. The relationship between drinking patterns and susceptibility was explored. RESULTS Whole-brain analyses showed that the susceptibility in the dorsal striatum (putamen and caudate) among AUD individuals was higher than healthy participants and was positively related to the Obsessive Compulsive Drinking Scale (OCDS) scores and the amount of drinking in the past three months. CONCLUSIONS Increased susceptibility suggests higher iron accumulation in the dorsal striatum in AUD. This surrogate for the brain iron level was linearly associated with the compulsive drinking pattern and the recent amount of drinking, which provides us a new clinical perspective in relation to brain iron accumulation, and also might indicate an association of AUD with neuroinflammation as a consequence of brain iron accumulation. The iron accumulation in the striatum is further relevant for functional imaging studies in AUD by potentially producing signal dropout and artefacts in fMRI images.
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Affiliation(s)
- Haoye Tan
- grid.7700.00000 0001 2190 4373Department of Addictive Behaviour and Addiction Medicine, Central Institute of Mental Health, Medical Faculty of Mannheim, Heidelberg University, 68159 Mannheim, Germany
| | - Simon Hubertus
- grid.7700.00000 0001 2190 4373Computer Assisted Clinical Medicine, Medical Faculty of Mannheim, Heidelberg University, 68159 Mannheim, Germany
| | - Sebastian Thomas
- grid.7700.00000 0001 2190 4373Computer Assisted Clinical Medicine, Medical Faculty of Mannheim, Heidelberg University, 68159 Mannheim, Germany
| | - Alycia M. Lee
- grid.7700.00000 0001 2190 4373Department of Addictive Behaviour and Addiction Medicine, Central Institute of Mental Health, Medical Faculty of Mannheim, Heidelberg University, 68159 Mannheim, Germany
| | - Sarah Gerhardt
- grid.7700.00000 0001 2190 4373Department of Addictive Behaviour and Addiction Medicine, Central Institute of Mental Health, Medical Faculty of Mannheim, Heidelberg University, 68159 Mannheim, Germany
| | - Martin Fungisai Gerchen
- grid.7700.00000 0001 2190 4373Department of Clinical Psychology, Central Institute of Mental Health, Medical Faculty of Mannheim, Heidelberg University, 68159 Mannheim, Germany ,grid.455092.fBernstein Center for Computational Neuroscience Heidelberg/Mannheim, 68159 Mannheim, Germany ,grid.7700.00000 0001 2190 4373Department of Psychology, Heidelberg University, 69117 Heidelberg, Germany
| | - Wolfgang H. Sommer
- grid.7700.00000 0001 2190 4373Department of Addictive Behaviour and Addiction Medicine, Central Institute of Mental Health, Medical Faculty of Mannheim, Heidelberg University, 68159 Mannheim, Germany ,grid.7700.00000 0001 2190 4373Institute of Psychopharmacology, Central Institute of Mental Health, Heidelberg University, 68159 Mannheim, Germany ,Bethania Hospital for Psychiatry, Psychosomatics, and Psychotherapy, Greifswald, Germany
| | - Falk Kiefer
- grid.7700.00000 0001 2190 4373Department of Addictive Behaviour and Addiction Medicine, Central Institute of Mental Health, Medical Faculty of Mannheim, Heidelberg University, 68159 Mannheim, Germany ,grid.7700.00000 0001 2190 4373Mannheim Center for Translational Neurosciences (MCTN), Medical Faculty of Mannheim, Heidelberg University, 68159 Mannheim, Germany ,grid.7700.00000 0001 2190 4373Feuerlein Center on Translational Addiction Medicine, Heidelberg University, 69117 Heidelberg, Germany
| | - Lothar Schad
- grid.7700.00000 0001 2190 4373Computer Assisted Clinical Medicine, Medical Faculty of Mannheim, Heidelberg University, 68159 Mannheim, Germany
| | - Sabine Vollstädt-Klein
- Department of Addictive Behaviour and Addiction Medicine, Central Institute of Mental Health, Medical Faculty of Mannheim, Heidelberg University, 68159, Mannheim, Germany. .,Mannheim Center for Translational Neurosciences (MCTN), Medical Faculty of Mannheim, Heidelberg University, 68159, Mannheim, Germany.
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Hornoiu IL, Lee AM, Tan H, Nakovics H, Bach P, Mann K, Kiefer F, Sommer WH, Vollstädt-Klein S. The Role of Unawareness, Volition, and Neural Hyperconnectivity in Alcohol Use Disorder: A Functional Magnetic Resonance Imaging Study. Biol Psychiatry Cogn Neurosci Neuroimaging 2022:S2451-9022(22)00343-3. [PMID: 36948909 DOI: 10.1016/j.bpsc.2022.12.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 11/28/2022] [Accepted: 12/01/2022] [Indexed: 12/24/2022]
Abstract
BACKGROUND Automated alcohol craving and habitual alcohol consumption characterize the later stages of alcohol use disorder (AUD). This study reanalyzed previously collected functional neuroimaging data in combination with the Craving Automated Scale for Alcohol (CAS-A) questionnaire to investigate the neural correlates and brain networks underlying automated drinking characterized by unawareness and nonvolition. METHODS We assessed 49 abstinent male patients with AUD and 36 male healthy control participants during a functional magnetic resonance imaging-based alcohol cue-reactivity task. We performed whole-brain analyses examining the associations between CAS-A scores and other clinical instruments and neural activation patterns in the alcohol versus neutral contrast. Furthermore, we performed psychophysiological interaction analyses to assess the functional connectivity between predefined seed regions and other brain areas. RESULTS In patients with AUD, higher CAS-A scores correlated with greater activation in dorsal striatal, pallidal, and prefrontal regions, including frontal white matter, and with lower activation in visual and motor processing regions. Between-group psychophysiological interaction analyses showed extensive connectivity between the seed regions inferior frontal gyrus and angular gyrus and several frontal, parietal, and temporal brain regions in AUD versus healthy control participants. CONCLUSIONS The present study applied a new lens to previously acquired alcohol cue-reactivity functional magnetic resonance imaging data by correlating neural activation patterns with clinical CAS-A scores to elucidate potential neural correlates of automated alcohol craving and habitual alcohol consumption. Our results support previous findings showing that alcohol addiction is associated with hyperactivation in habit-processing regions, with hypoactivation in areas mediating motor and attention processing, and with general hyperconnectivity.
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Affiliation(s)
- Iasmina Livia Hornoiu
- Department of Addictive Behavior and Addiction Medicine, Medical Faculty Mannheim, Central Institute of Mental Health, University of Heidelberg, Mannheim, Germany
| | - Alycia M Lee
- Department of Addictive Behavior and Addiction Medicine, Medical Faculty Mannheim, Central Institute of Mental Health, University of Heidelberg, Mannheim, Germany
| | - Haoye Tan
- Department of Addictive Behavior and Addiction Medicine, Medical Faculty Mannheim, Central Institute of Mental Health, University of Heidelberg, Mannheim, Germany
| | - Helmut Nakovics
- Department of Addictive Behavior and Addiction Medicine, Medical Faculty Mannheim, Central Institute of Mental Health, University of Heidelberg, Mannheim, Germany
| | - Patrick Bach
- Department of Addictive Behavior and Addiction Medicine, Medical Faculty Mannheim, Central Institute of Mental Health, University of Heidelberg, Mannheim, Germany; Mannheim Center of Translational Neuroscience (MCTN), University of Heidelberg, Medical Faculty Mannheim, Mannheim, Germany
| | - Karl Mann
- Department of Addictive Behavior and Addiction Medicine, Medical Faculty Mannheim, Central Institute of Mental Health, University of Heidelberg, Mannheim, Germany
| | - Falk Kiefer
- Department of Addictive Behavior and Addiction Medicine, Medical Faculty Mannheim, Central Institute of Mental Health, University of Heidelberg, Mannheim, Germany; Mannheim Center of Translational Neuroscience (MCTN), University of Heidelberg, Medical Faculty Mannheim, Mannheim, Germany
| | - Wolfgang H Sommer
- Department of Addictive Behavior and Addiction Medicine, Medical Faculty Mannheim, Central Institute of Mental Health, University of Heidelberg, Mannheim, Germany; Institute of Psychopharmacology, Central Institute of Mental Health, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany; Bethanien Hospital for Psychiatry, Greifswald, Germany
| | - Sabine Vollstädt-Klein
- Department of Addictive Behavior and Addiction Medicine, Medical Faculty Mannheim, Central Institute of Mental Health, University of Heidelberg, Mannheim, Germany.
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Klausen MK, Jensen ME, Møller M, le Dous N, Jensen AMØ, Zeeman VA, Johannsen CF, Lee AM, Thomsen GK, Macoveanu J, Fisher PM, Gillum MP, Jørgensen NR, Bergmann ML, Enghusen Poulsen H, Becker U, Holst JJ, Benveniste H, Volkow ND, Vollstädt-Klein S, Miskowiak KW, Ekstrøm CT, Knudsen GM, Visboll T, Fink-Jensen A. Exenatide once weekly for alcohol use disorder investigated in a randomized, placebo-controlled clinical trial. JCI Insight 2022; 7:159863. [PMID: 36066977 DOI: 10.1172/jci.insight.159863] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 08/31/2022] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Alcohol use disorder (AUD) is a chronic, relapsing brain disorder that accounts for 5% of deaths annually, and there is an urgent need to develop new targets for therapeutic intervention. The glucagon-like peptide-1 receptor agonist exenatide reduces alcohol consumption in rodents and non-human primates, but its efficacy in patients with AUD is unknown. METHODS In a randomized, double-blinded, placebo-controlled clinical trial, treatment-seeking AUD patients were assigned to receive exenatide (2 mg subcutaneously) or placebo once weekly for 26-weeks, in addition to standard cognitive-behavioral therapy. The primary outcome was reduction in number of heavy drinking days. A subgroup also completed fMRI and SPECT brain scans. RESULTS A total of 127 patients were enrolled. Our data revealed that although exenatide did not significantly reduce the number of heavy drinking days compared to placebo, it significantly attenuated fMRI alcohol cue-reactivity in the ventral striatum and septal area, which are crucial brain areas for drug reward and addiction. In addition, the dopamine transporter availability was lower in the exenatide group compared to the placebo group. Exploratory analyses revealed that exenatide significantly reduced heavy drinking days and total alcohol intake in a subgroup of obese patients (BMI>30 kg/m2). Adverse events were mainly gastrointestinal. CONCLUSIONS This first RCT on the effects of a GLP-1 receptor agonist in AUD provides new important knowledge on the effects of GLP-1 receptor agonists as a novel treatment target in addiction. TRIAL REGISTRATION EudraCT: 2016-003343-11 and ClinicalTrials.gov: NCT03232112FUNDING. The Novavi Foundation; The Research Foundation, Mental Health Services, Capital Region of Denmark; The Research Foundation, Capital Region of Denmark; The Ivan Nielsen Foundation; The A.P. Moeller and wife Chastine Mc-Kinney Moellers Family Foundation; The Augustinus Foundation; The Woerzner Foundation; Grosserer L.F Foghts Foundation; The Hartmann Foundation; The Aase and Ejnar Danielsen Foundation; The P.A. Messerschmidt and wife foundation and The Lundbeck Foundation. The funding sources and the manufacturer of exenatide once weekly (Bydureon®, AstraZeneca), had no influence on the trial design or data analysis.
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Affiliation(s)
- Mette K Klausen
- Psychiatric Center Copenhagen, Rigshospitalet, Copenhagen, Denmark
| | - Mathias E Jensen
- Psychiatric Center Copenhagen, Rigshospitalet, Copenhagen, Denmark
| | - Marco Møller
- Psychiatric Center Copenhagen, Rigshospitalet, Copenhagen, Denmark
| | - Nina le Dous
- Psychiatric Center Copenhagen, Rigshospitalet, Copenhagen, Denmark
| | | | | | | | - Alycia M Lee
- Mannheim Center for Translational Neurosciences (MCTN), University of Heidelberg, Mannheim, Germany
| | - Gerda K Thomsen
- Neurobiology Research Unit, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
| | - Julian Macoveanu
- Psychiatric Center Copenhagen, Rigshospitalet, Copenhagen, Denmark
| | - Patrick M Fisher
- Neurobiology Research Unit, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
| | - Matthew P Gillum
- Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Niklas R Jørgensen
- Department of Clinical Biochemistry, University of Copenhagen, Copenhagen, Denmark
| | - Marianne L Bergmann
- Department of Biochemistry and Immunology, University Hospital of Southern Denmark, Vejle, Denmark
| | - Henrik Enghusen Poulsen
- Department of Clinical Pharmacology, Bispebjerg/Frederiksberg Hospital, University Hospital Copenhagen, Copenhagen, Denmark
| | - Ulrik Becker
- National Institute of Public Health, University of Southern Denmark and University of Copenhagen, Copenhagen, Denmark
| | - Jens Juul Holst
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Helene Benveniste
- Department of Anesthesiology and Pediatric Anesthesiology, Yale University, New Haven, United States of America
| | | | - Sabine Vollstädt-Klein
- Mannheim Center for Translational Neurosciences (MCTN), Medical Faculty of Mannheim, University of Heidelberg, Mannheim, Germany
| | | | - Claus T Ekstrøm
- Department of Public Health, Section of Biostatistics, University of Copenhagen, Copenhagen, Denmark
| | - Gitte M Knudsen
- Neurobiology Research Unit, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
| | - Tina Visboll
- Steno Diabetes Center Copenhagen, University of Copenhagen, Copenhagen, Denmark
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Banna FKE, Otto JM, Mulloy SM, Tsai W, McElroy SM, Wong AL, Cutts G, Vrieze SI, Lee AM. Back-translating GWAS findings to animal models reveals a role for Hgfac and Slc39a8 in alcohol and nicotine consumption. Sci Rep 2022; 12:9336. [PMID: 35661789 PMCID: PMC9167284 DOI: 10.1038/s41598-022-13283-1] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Accepted: 05/23/2022] [Indexed: 11/09/2022] Open
Abstract
Alcohol and tobacco are the most commonly used addictive substances, with high comorbidity rates between alcohol use disorder and tobacco use disorder. Risk for alcohol and nicotine addiction is highly heritable, and they share common genetic factors. A GWAS in over 1 million individuals has revealed 566 genetic variants in 406 loci associated with multiple stages of alcohol and tobacco use. Three novel genes-SLC39A8, GRK4 and HGFAC-within loci associated with altered alcoholic drinks per week (ADW) or cigarettes per day (CPD) were selected to further study their role in alcohol and tobacco use disorder. The role of these genes was assessed using the two-bottle choice addiction paradigm in transgenic mice for each of the genes. We found significant decreases in chronic alcohol consumption and preference in female Hgfac knockout (KO) mice, and decreased nicotine preference in male Hgfac KO compared with wild-type (WT) mice. Additionally, male Slc39a8 hypomorph mice showed greater overall nicotine preference compared with WT mice, while no differences were detected for Grk4 KO mice in alcohol or nicotine consumption and preference in either sex. Thus, this study implicates Hgfac and Slc39a8 in alcohol and tobacco use in a sex-specific manner.
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Affiliation(s)
- F K El Banna
- Department of Pharmacology, University of Minnesota, Minneapolis, MN, USA.,Department of Psychology, University of Minnesota, Minneapolis, MN, USA
| | - J M Otto
- Department of Psychology, University of Minnesota, Minneapolis, MN, USA
| | - S M Mulloy
- Department of Pharmacology, University of Minnesota, Minneapolis, MN, USA
| | - W Tsai
- Department of Pharmacology, University of Minnesota, Minneapolis, MN, USA
| | - S M McElroy
- Department of Pharmacology, University of Minnesota, Minneapolis, MN, USA
| | - A L Wong
- Department of Pharmacology, University of Minnesota, Minneapolis, MN, USA
| | - G Cutts
- Department of Pharmacology, University of Minnesota, Minneapolis, MN, USA
| | - S I Vrieze
- Department of Psychology, University of Minnesota, Minneapolis, MN, USA
| | - A M Lee
- Department of Pharmacology, University of Minnesota, Minneapolis, MN, USA.
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8
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Tan H, Nakovics H, Zeng H, Copello A, Akhtar S, Lee AM, Kiefer F, Vollstädt-Klein S. Assessment of automated craving across substances and across cultures: stability-analysis of the Craving Automated Scale (CAS). J Addict Dis 2021; 40:405-414. [PMID: 34967698 DOI: 10.1080/10550887.2021.2015053] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
BACKGROUND The transition from hedonic to compulsive use in Substance Use Disorders (SUD) is a critical point in SUD progression and hence relevant for assessment and treatment. To measure the habitual patterns of substance consumption, the Craving Automated Scales (CAS) for alcohol (CAS-A), substances (CAS-S) and cigarette smoking (CAS-CS) were developed and introduced to different countries. In this study, we aimed to investigate the structural stability of CAS across substances and cultures. METHODS This study analyzed the CAS-scores of a sample of 370 participants in Germany, China and the UK, including 262 opioid-users, 65 smokers and 43 alcohol-users. We performed stability analyses to check the stability (i. e. factorial invariance) of factor solutions. Based on confirmed stability of the general factor (gfactor) solution and the calculations rule obtained in the previous validation of CAS-alcohol (CAS-A), the factor structures of CAS-A, CAS-S and CAS-CS were compared. RESULTS The gfactor solutions based on calculations rule shows good stability, with the mean stability coefficients of 0.990 and 0.977 for CAS-S and CAS-CS respectively. The gfactor patterns were similar for CAS-A, CAS-S and CAS-CS, as well as across samples (Germany, China and the UK), with most factor-loadings larger than 0.7. Based on these findings, CAS-S and CAS-CS were also associated with established clinical measures of SUD. CONCLUSIONS Our findings suggest the two-gfactor solution based on a proposed calculation rule has a high stability across substances and cultures. This could be in line with common neurobiological mechanisms underlying habitual substance use. Moreover, comparing CAS with established clinical tools suggests that CAS might assess the automated behavior in substance consumption in a more sophisticated way.
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Affiliation(s)
- H Tan
- Department of Addictive Behaviour and Addiction Medicine, Central Institute of Mental Health, Medical, Faculty of Mannheim, University of Heidelberg, Mannheim, Germany
| | - H Nakovics
- Department of Addictive Behaviour and Addiction Medicine, Central Institute of Mental Health, Medical, Faculty of Mannheim, University of Heidelberg, Mannheim, Germany
| | - H Zeng
- Department of Psychology, Guangzhou University, Guangzhou, China
| | - A Copello
- School of Psychology, University of Birmingham, Birmingham, UK
| | - S Akhtar
- Birmingham and Solihull Mental Health Foundation Trust, Birmingham, UK
| | - A M Lee
- Department of Addictive Behaviour and Addiction Medicine, Central Institute of Mental Health, Medical, Faculty of Mannheim, University of Heidelberg, Mannheim, Germany
| | - F Kiefer
- Department of Addictive Behaviour and Addiction Medicine, Central Institute of Mental Health, Medical, Faculty of Mannheim, University of Heidelberg, Mannheim, Germany.,Feuerlein Center on Translational Addiction Medicine, University of Heidelberg, Heidelberg, Germany
| | - S Vollstädt-Klein
- Department of Addictive Behaviour and Addiction Medicine, Central Institute of Mental Health, Medical, Faculty of Mannheim, University of Heidelberg, Mannheim, Germany.,Mannheim Center for Translational Neurosciences (MCTN), Medical Faculty of Mannheim, University of Heidelberg, Mannheim, Germany
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9
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Wong AL, McElroy SM, Robinson JM, Mulloy SM, El Banna FK, Harris AC, LeSage MG, Lee AM. Flavor-specific enhancement of electronic cigarette liquid consumption and preference in mice. Drug Alcohol Depend 2020; 211:107995. [PMID: 32354580 PMCID: PMC7328293 DOI: 10.1016/j.drugalcdep.2020.107995] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [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: 12/03/2019] [Revised: 03/24/2020] [Accepted: 03/25/2020] [Indexed: 12/22/2022]
Abstract
BACKGROUND The use of electronic cigarettes has increased over the past decade. To determine how the abuse liability of electronic cigarette liquids (e-liquids) differs from nicotine alone, and to determine the impact of flavor, we compared nicotine-containing fruit- and tobacco-flavored e-liquids, and their nicotine-free versions, to nicotine alone in mouse models of oral consumption, reward and aversion. METHODS Adult male C57BL/6 J mice voluntarily consumed oral nicotine, equivalent nicotine concentrations of fruit- and tobacco-flavored e-liquid, and equivalent dilutions of the nicotine-free versions in 2-bottle choice tests. Conditioned place preference and place aversion were assessed with peripherally administered e-liquids or nicotine. Serum nicotine and cotinine levels were measured after subcutaneous injections of e-liquid or nicotine. RESULTS Mice showed higher consumption and preference for the fruit-flavored e-liquid compared with nicotine alone. This increase was not due to the flavor itself as consumption of the nicotine-free fruit-flavored e-liquid was not elevated until the highest concentration tested. The increased consumption and preference were not observed with the tobacco-flavored e-liquid. The conditioned place preference, place aversion and nicotine pharmacokinetics of the fruit-flavored e-liquid were not significantly different from nicotine alone. CONCLUSIONS Our data suggest that fruit, but not tobacco flavor, increased the oral consumption of e-liquid compared with nicotine alone. Moreover, this enhancement was not due to increased consumption of the flavor itself, altered rewarding or aversive properties after peripheral administration, or altered pharmacokinetics. This flavor-specific enhancement suggests that some flavors may lead to higher nicotine intake and increased use of e-liquids compared with nicotine alone.
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Affiliation(s)
- A L Wong
- Department of Pharmacology, University of Minnesota, Minneapolis, MN, USA
| | - S M McElroy
- Department of Pharmacology, University of Minnesota, Minneapolis, MN, USA
| | - J M Robinson
- Department of Pharmacology, University of Minnesota, Minneapolis, MN, USA
| | - S M Mulloy
- Graduate Program in Neuroscience, University of Minnesota, Minneapolis, MN, USA
| | - F K El Banna
- Department of Pharmacology, University of Minnesota, Minneapolis, MN, USA
| | - A C Harris
- Graduate Program in Neuroscience, University of Minnesota, Minneapolis, MN, USA; Department of Medicine, University of Minnesota, Minneapolis, MN, USA; Department of Medicine, Hennepin Healthcare Research Institute, Minneapolis, MN, USA; Department of Psychology, University of Minnesota, Minneapolis, MN, USA
| | - M G LeSage
- Department of Medicine, University of Minnesota, Minneapolis, MN, USA; Department of Medicine, Hennepin Healthcare Research Institute, Minneapolis, MN, USA; Department of Psychology, University of Minnesota, Minneapolis, MN, USA
| | - A M Lee
- Department of Pharmacology, University of Minnesota, Minneapolis, MN, USA; Graduate Program in Neuroscience, University of Minnesota, Minneapolis, MN, USA.
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10
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Lee AM, Sénéchal M, Hrubeniuk TJ, Bouchard DR. Is sitting time leading to mobility decline in long-term care residents? Aging Clin Exp Res 2020; 32:183-186. [PMID: 30778873 DOI: 10.1007/s40520-019-01148-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Accepted: 02/11/2019] [Indexed: 11/29/2022]
Abstract
BACKGROUND Little is known about the sitting time in long-term care (LTC) facilities, or if sedentary behaviour affects changes in mobility over time. AIMS The objectives were to document the sitting time of LTC residents and to examine if sitting time could predict changes in mobility. METHODS Twenty residents of an LTC facility, representing three mobility statuses (independent, assisted transfer, and dependent transfer) were included. Sitting time was defined using an ActivPAL. Mobility statuses were reviewed 12 months later. RESULTS Participants spent an average of 21.9 h per day sedentary. At follow-up, five residents experienced a decline in mobility status, but no baseline sitting time variables were associated with the changes in mobility status (P > 0.05). DISCUSSION/CONCLUSION People living in LTC are highly sedentary. Sitting time differs amongst the mobility statues, but is unable to predict upcoming changes in mobility status.
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Affiliation(s)
- A M Lee
- Cardiometabolic Exercise and Lifestyle Laboratory, Fredericton, NB, Canada
- Faculty of Kinesiology, University of New Brunswick, 90 Mackay Drive, (Room 322), Fredericton, NB, E3B 5A3, Canada
| | - M Sénéchal
- Cardiometabolic Exercise and Lifestyle Laboratory, Fredericton, NB, Canada
- Faculty of Kinesiology, University of New Brunswick, 90 Mackay Drive, (Room 322), Fredericton, NB, E3B 5A3, Canada
| | - T J Hrubeniuk
- Cardiometabolic Exercise and Lifestyle Laboratory, Fredericton, NB, Canada
- Interdisciplinary Studies, University of New Brunswick, Fredericton, NB, Canada
| | - D R Bouchard
- Cardiometabolic Exercise and Lifestyle Laboratory, Fredericton, NB, Canada.
- Faculty of Kinesiology, University of New Brunswick, 90 Mackay Drive, (Room 322), Fredericton, NB, E3B 5A3, Canada.
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11
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Jensen MT, Fung K, Aung N, Sanghvi MM, Chadalavada S, Paiva JM, Khanji MY, De Knegt MC, Lukaschuk E, Lee AM, Carapella V, Piechnik SK, Neubauer S, Petersen SE. 347Early changes in cardiac morphology and function in individuals with diabetes and preserved ejection fraction detected by cardiovascular magnetic resonance tagging - The UK Biobank. Eur Heart J Cardiovasc Imaging 2019. [DOI: 10.1093/ehjci/jez103.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- M T Jensen
- Barts and The London School of Medicine and Dentistry, London, United Kingdom of Great Britain & Northern Ireland
| | - K Fung
- Barts and The London School of Medicine and Dentistry, London, United Kingdom of Great Britain & Northern Ireland
| | - N Aung
- Barts and The London School of Medicine and Dentistry, London, United Kingdom of Great Britain & Northern Ireland
| | - M M Sanghvi
- Barts and The London School of Medicine and Dentistry, London, United Kingdom of Great Britain & Northern Ireland
| | - S Chadalavada
- Barts and The London School of Medicine and Dentistry, London, United Kingdom of Great Britain & Northern Ireland
| | - J M Paiva
- Barts and The London School of Medicine and Dentistry, London, United Kingdom of Great Britain & Northern Ireland
| | - M Y Khanji
- Barts and The London School of Medicine and Dentistry, London, United Kingdom of Great Britain & Northern Ireland
| | - M C De Knegt
- Barts and The London School of Medicine and Dentistry, London, United Kingdom of Great Britain & Northern Ireland
| | - E Lukaschuk
- John Radcliffe Hospital, Department of Cardiovascular Medicine, Oxford, United Kingdom of Great Britain & Northern Ireland
| | - A M Lee
- Barts and The London School of Medicine and Dentistry, London, United Kingdom of Great Britain & Northern Ireland
| | - V Carapella
- John Radcliffe Hospital, Department of Cardiovascular Medicine, Oxford, United Kingdom of Great Britain & Northern Ireland
| | - S K Piechnik
- John Radcliffe Hospital, Department of Cardiovascular Medicine, Oxford, United Kingdom of Great Britain & Northern Ireland
| | - S Neubauer
- John Radcliffe Hospital, Department of Cardiovascular Medicine, Oxford, United Kingdom of Great Britain & Northern Ireland
| | - S E Petersen
- Barts and The London School of Medicine and Dentistry, London, United Kingdom of Great Britain & Northern Ireland
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12
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Aung N, Lee AM, Sanghvi MM, Fung K, Paiva JM, Thomson RJ, Khanji MY, Munro PB, Petersen SE. P622Automatic classification of CMR image sequences with convolutional neural networks. Eur Heart J Cardiovasc Imaging 2019. [DOI: 10.1093/ehjci/jez116.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- N Aung
- Queen Mary University of London, William Harvey Research Institute, London, United Kingdom of Great Britain & Northern Ireland
| | - A M Lee
- Queen Mary University of London, William Harvey Research Institute, London, United Kingdom of Great Britain & Northern Ireland
| | - M M Sanghvi
- Queen Mary University of London, William Harvey Research Institute, London, United Kingdom of Great Britain & Northern Ireland
| | - K Fung
- Queen Mary University of London, William Harvey Research Institute, London, United Kingdom of Great Britain & Northern Ireland
| | - J M Paiva
- Queen Mary University of London, William Harvey Research Institute, London, United Kingdom of Great Britain & Northern Ireland
| | - R J Thomson
- Queen Mary University of London, William Harvey Research Institute, London, United Kingdom of Great Britain & Northern Ireland
| | - M Y Khanji
- Queen Mary University of London, William Harvey Research Institute, London, United Kingdom of Great Britain & Northern Ireland
| | - P B Munro
- Queen Mary University of London, William Harvey Research Institute, London, United Kingdom of Great Britain & Northern Ireland
| | - S E Petersen
- Queen Mary University of London, William Harvey Research Institute, London, United Kingdom of Great Britain & Northern Ireland
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13
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Raisi-Estabragh Z, Fung K, Aung N, Sanghvi M, Paiva J, Khanji M, Lukaschuk E, Lee AM, Carapella V, Piechnik S, Neubauer S, Harvey N, Petersen SE. P149Measures of bone quality are associated with aortic distensibility. Eur Heart J Cardiovasc Imaging 2019. [DOI: 10.1093/ehjci/jez117.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Z Raisi-Estabragh
- Queen Mary University of London, William Harvey research institute, London, United Kingdom of Great Britain & Northern Ireland
| | - K Fung
- Queen Mary University of London, William Harvey research institute, London, United Kingdom of Great Britain & Northern Ireland
| | - N Aung
- Queen Mary University of London, William Harvey research institute, London, United Kingdom of Great Britain & Northern Ireland
| | - M Sanghvi
- Queen Mary University of London, William Harvey research institute, London, United Kingdom of Great Britain & Northern Ireland
| | - J Paiva
- Queen Mary University of London, William Harvey research institute, London, United Kingdom of Great Britain & Northern Ireland
| | - M Khanji
- Queen Mary University of London, William Harvey research institute, London, United Kingdom of Great Britain & Northern Ireland
| | - E Lukaschuk
- University of Oxford Centre for Clinical Magnetic Resonance Research, Oxford, United Kingdom of Great Britain & Northern Ireland
| | - A M Lee
- Queen Mary University of London, William Harvey research institute, London, United Kingdom of Great Britain & Northern Ireland
| | - V Carapella
- University of Oxford Centre for Clinical Magnetic Resonance Research, Oxford, United Kingdom of Great Britain & Northern Ireland
| | - S Piechnik
- University of Oxford Centre for Clinical Magnetic Resonance Research, Oxford, United Kingdom of Great Britain & Northern Ireland
| | - S Neubauer
- University of Oxford Centre for Clinical Magnetic Resonance Research, Oxford, United Kingdom of Great Britain & Northern Ireland
| | - N Harvey
- University of Southampton, Southampton, United Kingdom of Great Britain & Northern Ireland
| | - S E Petersen
- Queen Mary University of London, William Harvey research institute, London, United Kingdom of Great Britain & Northern Ireland
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14
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Lencer R, Mills LJ, Alliey-Rodriguez N, Shafee R, Lee AM, Reilly JL, Sprenger A, McDowell JE, McCarroll SA, Keshavan MS, Pearlson GD, Tamminga CA, Clementz BA, Gershon ES, Sweeney JA, Bishop JR. Genome-wide association studies of smooth pursuit and antisaccade eye movements in psychotic disorders: findings from the B-SNIP study. Transl Psychiatry 2017; 7:e1249. [PMID: 29064472 PMCID: PMC5682604 DOI: 10.1038/tp.2017.210] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Accepted: 07/14/2017] [Indexed: 02/07/2023] Open
Abstract
Eye movement deviations, particularly deficits of initial sensorimotor processing and sustained pursuit maintenance, and antisaccade inhibition errors, are established intermediate phenotypes for psychotic disorders. We here studied eye movement measures of 849 participants from the Bipolar-Schizophrenia Network on Intermediate Phenotypes (B-SNIP) study (schizophrenia N=230, schizoaffective disorder N=155, psychotic bipolar disorder N=206 and healthy controls N=258) as quantitative phenotypes in relation to genetic data, while controlling for genetically derived ancestry measures, age and sex. A mixed-modeling genome-wide association studies approach was used including ~4.4 million genotypes (PsychChip and 1000 Genomes imputation). Across participants, sensorimotor processing at pursuit initiation was significantly associated with a single nucleotide polymorphism in IPO8 (12p11.21, P=8 × 10-11), whereas suggestive associations with sustained pursuit maintenance were identified with SNPs in SH3GL2 (9p22.2, P=3 × 10-8). In participants of predominantly African ancestry, sensorimotor processing was also significantly associated with SNPs in PCDH12 (5q31.3, P=1.6 × 10-10), and suggestive associations were observed with NRSN1 (6p22.3, P=5.4 × 10-8) and LMO7 (13q22.2, P=7.3x10-8), whereas antisaccade error rate was significantly associated with a non-coding region at chromosome 7 (P=6.5 × 10-9). Exploratory pathway analyses revealed associations with nervous system development and function for 40 top genes with sensorimotor processing and pursuit maintenance (P=4.9 × 10-2-9.8 × 10-4). Our findings suggest novel patterns of genetic variation relevant for brain systems subserving eye movement control known to be impaired in psychotic disorders. They include genes involved in nuclear trafficking and gene silencing (IPO8), fast axonal guidance and synaptic specificity (PCDH12), transduction of nerve signals (NRSN1), retinal degeneration (LMO7), synaptic glutamate release (SH3GL2), and broader nervous system development and function.
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Affiliation(s)
- R Lencer
- Department of Psychiatry and Psychotherapy, Otto Creutzfeldt Center for Cognitive and Behavioral Neuroscience, University of Muenster, Muenster, Germany
| | - L J Mills
- Minnesota Supercomputing Institute, University of Minnesota, Minneapolis, MN, USA
| | - N Alliey-Rodriguez
- Department of Psychiatry and Behavioral Neuroscience, University of Chicago, Chicago, IL, USA
| | - R Shafee
- Department of Genetics, Harvard Medical School, Boston, MA, USA
- Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - A M Lee
- Department of Experimental and Clinical Pharmacology, College of Pharmacy, University of Minnesota, Minneapolis, MN, USA
| | - J L Reilly
- Department of Psychiatry and Behavioral Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - A Sprenger
- Department of Neurology, University of Luebeck, Luebeck, Germany
| | - J E McDowell
- Department of Psychology and Neuroscience, BioImaging Research Center, University of Georgia, Athens, GA, USA
| | - S A McCarroll
- Department of Genetics, Harvard Medical School, Boston, MA, USA
| | - M S Keshavan
- Department of Psychiatry, Harvard Medical School, Beth Israel Deacones Medical Center, Boston, MA, USA
| | - G D Pearlson
- Departments of Psychiatry and Neurobiology, Yale University School of Medicine, New Haven, CT, USA
- Institute of Living, Hartford Hospital, Hartford, CT, USA
| | - C A Tamminga
- Department of Psychiatry, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - B A Clementz
- Department of Psychology and Neuroscience, BioImaging Research Center, University of Georgia, Athens, GA, USA
| | - E S Gershon
- Department of Psychiatry and Behavioral Neuroscience, University of Chicago, Chicago, IL, USA
| | - J A Sweeney
- Department of Psychiatry, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Department of Psychiatry and Behavioral Neuroscience, University of Cincinnati, Cincinnati, OH, USA
| | - J R Bishop
- Department of Experimental and Clinical Pharmacology, College of Pharmacy, University of Minnesota, Minneapolis, MN, USA
- Department of Psychiatry, University of Minnesota College of Medicine, Minneapolis, MN, USA
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15
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Nie Q, Shrestha S, Tapper EE, Trogstad-Isaacson CS, Bouchonville KJ, Lee AM, Wu R, Jerde CR, Wang Z, Kubica PA, Offer SM, Diasio RB. Quantitative Contribution of rs75017182 to Dihydropyrimidine Dehydrogenase mRNA Splicing and Enzyme Activity. Clin Pharmacol Ther 2017; 102:662-670. [PMID: 28295243 DOI: 10.1002/cpt.685] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Revised: 02/28/2017] [Accepted: 03/01/2017] [Indexed: 12/12/2022]
Abstract
Dihydropyrimidine dehydrogenase (DPD; DPYD gene) variants have emerged as reliable predictors of adverse toxicity to the chemotherapy agent 5-fluorouracil (5-FU). The intronic DPYD variant rs75017182 has been recently suggested to promote alternative splicing of DPYD. However, both the extent of alternative splicing and the true contribution of rs75017182 to DPD function remain unclear. In the present study we quantified alternative splicing and DPD enzyme activity in rs75017182 carriers utilizing healthy volunteer specimens from the Mayo Clinic Biobank. Although the alternatively spliced transcript was uniquely detected in rs75017182 carriers, canonically spliced DPYD levels were only reduced by 30% (P = 2.8 × 10-6 ) relative to controls. Similarly, DPD enzyme function was reduced by 35% (P = 0.025). Carriers of the well-studied toxicity-associated variant rs67376798 displayed similar reductions in DPD activity (31% reduction). The modest effects on splicing and function suggest that rs75017182 may have clinical utility as a predictor of 5-FU toxicity similar to rs67376798.
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Affiliation(s)
- Q Nie
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, Minnesota, USA
| | - S Shrestha
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, Minnesota, USA
| | - E E Tapper
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, Minnesota, USA
| | - C S Trogstad-Isaacson
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, Minnesota, USA
| | - K J Bouchonville
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, Minnesota, USA
| | - A M Lee
- Department of Experimental and Clinical Pharmacology, University of Minnesota, Minneapolis, Minnesota, USA
| | - R Wu
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, Minnesota, USA
| | - C R Jerde
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, Minnesota, USA.,Mayo Clinic Cancer Center, Rochester, Minnesota, USA
| | - Z Wang
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, Minnesota, USA
| | - P A Kubica
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, Minnesota, USA
| | - S M Offer
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, Minnesota, USA.,Mayo Clinic College of Medicine, Mayo Clinic, 200 1st St. SW, Rochester, Minnesota, USA
| | - R B Diasio
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, Minnesota, USA.,Mayo Clinic Cancer Center, Rochester, Minnesota, USA.,Mayo Clinic College of Medicine, Mayo Clinic, 200 1st St. SW, Rochester, Minnesota, USA
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16
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Lee AM, Lee MJ. Radiation safety awareness among medical interns: are EU guidelines being implemented? Ir J Med Sci 2016; 186:547-553. [PMID: 27844336 DOI: 10.1007/s11845-016-1530-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [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: 02/11/2016] [Accepted: 11/03/2016] [Indexed: 12/31/2022]
Abstract
BACKGROUND European recommendations suggest that medical students should be taught radiation safety before entering clinical practice. AIM The aim of this study was to produce a summative assessment of radiation protection training in medical school in Ireland. MATERIALS AND METHODS A web-based questionnaire was distributed to the 2014 intern population (n = 683) via network intern-coordinators. The survey encompassed knowledge of radiation dose in X-ray investigations, laws governing the prescribing of radiation and complications of radiation exposure to staff and patients. RESULTS Response rate was 14.2% (97/683) with all Irish medical schools represented. 64% of interns reported no formal training in radiation safety. 80% correctly identified MRI and 94% US as not posing a radiation risk. 54% identified CT PET as emitting the highest radiation dose to patients. Only 32% correctly identified one CT abdomen/pelvis as equivalent to the dose from 300 to 500 chest X-rays and 22% correctly identified the theoretical lifetime risk of cancer induction from CT abdomen/pelvis as 1 in 2000. While 71% thought it was very important that prescribers should be aware of patient radiation dose and 28% thought it was moderately important, 74% were not aware of any laws governing the prescribing of radiology investigations. CONCLUSION Currently, there is little formal radiation safety training in Irish medical schools. Knowledge of radiation dose and the laws governing prescribing is limited among qualifying interns. Implementation of a formal radiation safety curriculum in Irish Medical Schools would adhere to EU guidelines and improve prescriber knowledge, patient, and personal radiation safety.
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Affiliation(s)
- A M Lee
- Department of Imaging and Interventional Radiology, Royal College of Surgeons, Beaumont Hospital, Dublin 9, Ireland
| | - M J Lee
- Department of Imaging and Interventional Radiology, Royal College of Surgeons, Beaumont Hospital, Dublin 9, Ireland.
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17
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Asadi H, Lee RJ, Sheehan M, Thanaratam P, Lee DM, Lee AM, Lee MJ. Endovascular Therapy Research in Lower Limb Peripheral Arterial Disease Published Over a 5-Year Period: Who is Publishing and Where? Cardiovasc Intervent Radiol 2016; 40:343-350. [PMID: 27844109 DOI: 10.1007/s00270-016-1504-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Accepted: 11/04/2016] [Indexed: 11/28/2022]
Abstract
INTRODUCTION Peripheral arterial disease (PAD) is being increasingly managed by endovascular therapies. In this study, we identified the clinical services publishing research as well as the journals of publication over a 5-year period. METHODS Twenty keywords and phrases related to endovascular intervention were identified, and a literature search was performed through the PubMed database from January 2009 to January 2014. Inclusion criteria were English language, study population more than five patients, and matching the keyword search. Eligible studies were collated into a database and classified by journal of publication, PubMed number, article title, publishing clinical service, type of publication, country of origin, and authors. RESULTS 825 studies from 114 different journals were identified. 297 papers were excluded. Of the 528 included papers, 204 (39%) were published by Vascular Surgery (VS), 157 (30%) by Interventional Radiology (IR), 101 (19%) by Cardiology, 43 (8%) by Angiology, 6 (1%) by Vascular Medicine, and 17 (3%) from miscellaneous services. 283 (54%) studies originated from Europe, 157 (30%) from North America, 76 (14%) from Asia, 6 from Australia, 3 each from South America and Africa. IR published the most papers on PAD endovascular intervention in Europe with VS second while this trend was reversed in the USA. The 528 papers were published in 98 different journals with retrospective case series (72%), the majority. CONCLUSION IR continues to play a significant research role in endovascular intervention in PAD, particularly in Europe, and specifically in below the knee intervention, pedal intervention, and drug-eluting technologies.
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Affiliation(s)
- H Asadi
- Interventional Radiology Service, Department of Radiology, Royal College of Surgeons in Ireland Medical School, Beaumont Hospital, Dublin, Ireland
| | - R J Lee
- Interventional Radiology Service, Department of Radiology, Royal College of Surgeons in Ireland Medical School, Beaumont Hospital, Dublin, Ireland
| | - M Sheehan
- Interventional Radiology Service, Department of Radiology, Royal College of Surgeons in Ireland Medical School, Beaumont Hospital, Dublin, Ireland
| | - P Thanaratam
- Interventional Radiology Service, Department of Radiology, Royal College of Surgeons in Ireland Medical School, Beaumont Hospital, Dublin, Ireland
| | - D M Lee
- Interventional Radiology Service, Department of Radiology, Royal College of Surgeons in Ireland Medical School, Beaumont Hospital, Dublin, Ireland
| | - A M Lee
- Interventional Radiology Service, Department of Radiology, Royal College of Surgeons in Ireland Medical School, Beaumont Hospital, Dublin, Ireland
| | - M J Lee
- Interventional Radiology Service, Department of Radiology, Royal College of Surgeons in Ireland Medical School, Beaumont Hospital, Dublin, Ireland.
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18
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Leung SSK, Lee AM, Wong DFK, Wong CM, Leung KY, Chiang VCL, Yung WK, Chan SWC, Chung KF. A brief group intervention using a cognitive-behavioural approach to reduce postnatal depressive symptoms: a randomised controlled trial. Hong Kong Med J 2016; 22 Suppl 2:S4-S8. [PMID: 26908335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023] Open
Affiliation(s)
- S S K Leung
- Institute of Professional Education, Hong Kong Baptist Hospital
| | - A M Lee
- Department of Psychiatry, The University of Hong Kong
| | - D F K Wong
- Department of Social Work and Social Administration, The City University of Hong Kong
| | - C M Wong
- Department of Community Medicine, The University of Hong Kong
| | - K Y Leung
- Department of Obstetric & Gynaecology, Queen Elizabeth Hospital, Hong Kong
| | - V C L Chiang
- School of Nursing, Hong Kong Polytechnic University
| | - W K Yung
- Department of Obstetric & Gynaecology, Kwong Wah Hospital, Hong Kong
| | - S W C Chan
- Alice Lee Centre for Nursing Studies, National University of Singapore
| | - K F Chung
- Department of Psychiatry, The University of Hong Kong
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19
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Yang L, Tang H, Lee AM, Zou Y, Huang X, Tang X, Bai HX. Risk of Malignancy in Symptomatic Nodular Goiter Treated with Radiofrequency Ablation. AJNR Am J Neuroradiol 2016; 37:E7-8. [PMID: 26585266 DOI: 10.3174/ajnr.a4580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- L Yang
- Department of Neurology The Second Xiangya Hospital of Central South University Changsha, China
| | - H Tang
- Department of Radiology The First Xiangya Hospital of Central South University Changsha, China
| | - A M Lee
- Department of Radiology Hospital of the University of Pennsylvania Philadelphia, Pennsylvania
| | - Y Zou
- Department of Neurology The Second Xiangya Hospital of Central South University Changsha, China
| | - X Huang
- Department of Neurology The Second Xiangya Hospital of Central South University Changsha, China
| | - X Tang
- Department of Neurology The Second Xiangya Hospital of Central South University Changsha, China
| | - H X Bai
- Department of Radiology Hospital of the University of Pennsylvania Philadelphia, Pennsylvania
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Koh YW, Lee AM, Chan CY, Fong DYT, Lee CP, Leung KY, Tang CSK. Survey on examining prevalence of paternal anxiety and its risk factors in perinatal period in Hong Kong: a longitudinal study. BMC Public Health 2015; 15:1131. [PMID: 26572228 PMCID: PMC4647473 DOI: 10.1186/s12889-015-2436-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Accepted: 10/20/2015] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND There is emerging evidence of the significance of paternal mental health problems among the expectant fathers during the antenatal and postnatal period. The present study aims at determining the prevalence of paternal perinatal anxiety and identifying its risk factors among the fathers. METHODS A total of 622 expectant fathers were recruited in Hong Kong. The expectant fathers were assessed using standardized and validated psychological instruments on three time points including early pregnancy, late pregnancy and 6 week postnatal. Independent samples t-test, one way ANOVA, Pearson's correlation and multiple linear regression were used to examine the effect of hypothesized risk factors. Hierarchical multiple regression and mixed effect model were also conducted with potential confounding factors controlled for. RESULTS Results showed that a significant proportion of expectant fathers experienced anxiety during the perinatal period. Low self-esteem and poor social support were found to be risk factors of paternal anxiety across pregnancy to postnatal period. Work-family conflict could significantly predict paternal anxiety in the pregnancy period. CONCLUSIONS The present study points to the need for greater research and clinical attention to paternal anxiety, given that it is a highly prevalent problem and could be detrimental to their partner's well-being and children development. The present findings contributes to the theoretical understanding of the prevalence and risk factors of paternal perinatal anxiety and have implications for the design of effective identification, prevention, and interventions of these clinical problems.
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Affiliation(s)
- Y W Koh
- Department of Psychiatry, LKS Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong.
| | - A M Lee
- Department of Psychiatry, LKS Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong.
| | - C Y Chan
- Department of Psychiatry, LKS Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong.
| | - D Y T Fong
- School of Nursing, The University of Hong Kong, Pokfulam, Hong Kong.
| | - C P Lee
- Department of Obstetrics & Gynaecology, The University of Hong Kong, Pokfulam, Hong Kong.
| | - K Y Leung
- Department of Obstetrics & Gynaecology, The University of Hong Kong, Pokfulam, Hong Kong.
| | - C S K Tang
- National University of Singapore, Singapore, Singapore.
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Lee AM, Wu DF, Dadgar J, Wang D, McMahon T, Messing RO. PKCε phosphorylates α4β2 nicotinic ACh receptors and promotes recovery from desensitization. Br J Pharmacol 2015; 172:4430-41. [PMID: 26103136 DOI: 10.1111/bph.13228] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2014] [Revised: 06/10/2015] [Accepted: 06/13/2015] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND AND PURPOSE Nicotinic (ACh) receptor recovery from desensitization is modulated by PKC, but the PKC isozymes and the phosphorylation sites involved have not been identified. We investigated whether PKCε phosphorylation of α4β2 nAChRs regulates receptor recovery from desensitization. EXPERIMENTAL APPROACH Receptor recovery from desensitization was investigated by electrophysiological characterization of human α4β2 nAChRs. Phosphorylation of the α4 nAChR subunit was assessed by immunoblotting of mouse synaptosomes. Hypothermia induced by sazetidine-A and nicotine was measured in Prkce(-/-) and wild-type mice. KEY RESULTS Inhibiting PKCε impaired the magnitude of α4β2 nAChR recovery from desensitization. We identified five putative PKCε phosphorylation sites in the large intracellular loop of the α4 subunit, and mutating four sites to alanines also impaired recovery from desensitization. α4 nAChR subunit phosphorylation was reduced in synaptosomes from Prkce(-/-) mice. Sazetidine-A-induced hypothermia, which is mediated by α4β2 nAChR desensitization, was more severe and prolonged in Prkce(-/-) than in wild-type mice. CONCLUSIONS AND IMPLICATIONS PKCε phosphorylates the α4 nAChR subunit and regulates recovery from receptor desensitization. This study illustrates the importance of phosphorylation in regulating α4β2 receptor function, and suggests that reducing phosphorylation prolongs receptor desensitization and decreases the number of receptors available for activation.
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Affiliation(s)
- A M Lee
- Department of Pharmacology, University of Minnesota, Minneapolis, MN, USA
| | - D-F Wu
- Division of Pharmacology and Toxicology, College of Pharmacy, University of Texas at Austin, Austin, TX, USA
| | - J Dadgar
- Division of Pharmacology and Toxicology, College of Pharmacy, University of Texas at Austin, Austin, TX, USA
| | - D Wang
- Ernest Gallo Clinic and Research Center, University of California at San Francisco, Emeryville, CA, USA
| | - T McMahon
- Ernest Gallo Clinic and Research Center, University of California at San Francisco, Emeryville, CA, USA
| | - R O Messing
- Division of Pharmacology and Toxicology, College of Pharmacy, University of Texas at Austin, Austin, TX, USA
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Thorek DLJ, Kramer RM, Chen Q, Jeong J, Lupu ME, Lee AM, Moynahan ME, Lowery M, Ulmert D, Zanzonico P, Deasy JO, Humm JL, Russell J. Reverse-Contrast Imaging and Targeted Radiation Therapy of Advanced Pancreatic Cancer Models. Int J Radiat Oncol Biol Phys 2015; 93:444-53. [PMID: 26238952 DOI: 10.1016/j.ijrobp.2015.06.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Revised: 05/26/2015] [Accepted: 06/01/2015] [Indexed: 01/23/2023]
Abstract
PURPOSE To evaluate the feasibility of delivering experimental radiation therapy to tumors in the mouse pancreas. Imaging and treatment were performed using combined CT (computed tomography)/orthovoltage treatment with a rotating gantry. METHODS AND MATERIALS After intraperitoneal administration of radiopaque iodinated contrast, abdominal organ delineation was performed by x-ray CT. With this technique we delineated the pancreas and both orthotopic xenografts and genetically engineered disease. Computed tomographic imaging was validated by comparison with magnetic resonance imaging. Therapeutic radiation was delivered via a 1-cm diameter field. Selective x-ray radiation therapy of the noninvasively defined orthotopic mass was confirmed using γH2AX staining. Mice could tolerate a dose of 15 Gy when the field was centered on the pancreas tail, and treatment was delivered as a continuous 360° arc. This strategy was then used for radiation therapy planning for selective delivery of therapeutic x-ray radiation therapy to orthotopic tumors. RESULTS Tumor growth delay after 15 Gy was monitored, using CT and ultrasound to determine the tumor volume at various times after treatment. Our strategy enables the use of clinical radiation oncology approaches to treat experimental tumors in the pancreas of small animals for the first time. We demonstrate that delivery of 15 Gy from a rotating gantry minimizes background healthy tissue damage and significantly retards tumor growth. CONCLUSIONS This advance permits evaluation of radiation planning and dosing parameters. Accurate noninvasive longitudinal imaging and monitoring of tumor progression and therapeutic response in preclinical models is now possible and can be expected to more effectively evaluate pancreatic cancer disease and therapeutic response.
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Affiliation(s)
- Daniel L J Thorek
- Division of Nuclear Medicine, The Russell H. Morgan Department of Radiology and Radiological Sciences, The Johns Hopkins School of Medicine, Baltimore, MD.
| | - Robin M Kramer
- Tri-Institutional Training Program in Laboratory Animal Medicine and Science, Memorial Sloan-Kettering Cancer Center (MSKCC), Weill Cornell Medical College, The Rockefeller University, New York, NY
| | - Qing Chen
- Department of Medical Physics, MSKCC, New York, NY
| | - Jeho Jeong
- Department of Medical Physics, MSKCC, New York, NY
| | | | | | | | | | - David Ulmert
- Molecular Pharmacology and Chemistry Program, MSKCC, New York, NY; Department of Surgery (Urology), Skåne University Hospital, Malmö, Sweden
| | | | | | - John L Humm
- Department of Medical Physics, MSKCC, New York, NY
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Lee AM, Arreola AC, Kimmey BA, Schmidt HD. Administration of the nicotinic acetylcholine receptor agonists ABT-089 and ABT-107 attenuates the reinstatement of nicotine-seeking behavior in rats. Behav Brain Res 2014; 274:168-75. [PMID: 25128791 DOI: 10.1016/j.bbr.2014.08.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [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: 06/16/2014] [Revised: 08/04/2014] [Accepted: 08/06/2014] [Indexed: 12/15/2022]
Abstract
Current smoking cessation pharmacotherapies have modest efficacy, and most smokers relapse within the first few days after a quit attempt. Nicotine withdrawal-induced craving and cognitive impairments predict smoking relapse during abstinence and suggest that cognitive-enhancing drugs may prevent relapse. ABT-089 and ABT-107 are subtype-selective nAChR agonists that improve cognitive performance in laboratory animals. However, there are no studies examining the effects of ABT-089 and ABT-107 on nicotine self-administration and the reinstatement of nicotine-seeking behavior, an animal model of relapse in human smokers. The goal of the present study was to determine the effects of the α4β2*/α6β2* nAChR agonist ABT-089 and the α7 nAChR agonist ABT-107 on nicotine taking and seeking in rats. The effects of acute ABT-089 and ABT-107 pretreatment on nicotine self-administration and reinstatement were tested in male Sprague Dawley rats. Parallel studies of ABT-089 and ABT-107 on sucrose self-administration and reinstatement were tested in separate groups of rats to determine if the effects of these drug treatments generalized to other reinforced behaviors. Nicotine and sucrose self-administration behaviors were not altered following acute administration of ABT-089 (0, 0.12, 1.2 and 12.0mg/kg) or ABT-107 (0, 0.03 and 0.3mg/kg). In contrast, both ABT-089 and ABT-107 pretreatment dose-dependently attenuated nicotine reinstatement. These effects were reinforcer-specific as no effects of ABT-089 or ABT-107 pretreatment on sucrose seeking were noted. Taken together, these findings suggest that ABT-089 and ABT-107 do not affect nicotine consumption, but may reduce the likelihood that a smoking lapse will lead to relapse.
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Affiliation(s)
- Alycia M Lee
- Center for Neurobiology and Behavior, Department of Psychiatry, Perelman School of Medicine at the University of Pennsylvania, 125 South 31st Street, TRL Building, Rm 2214, Philadelphia, PA 19104, United States
| | - Adrian C Arreola
- Center for Neurobiology and Behavior, Department of Psychiatry, Perelman School of Medicine at the University of Pennsylvania, 125 South 31st Street, TRL Building, Rm 2214, Philadelphia, PA 19104, United States
| | - Blake A Kimmey
- Center for Neurobiology and Behavior, Department of Psychiatry, Perelman School of Medicine at the University of Pennsylvania, 125 South 31st Street, TRL Building, Rm 2214, Philadelphia, PA 19104, United States
| | - Heath D Schmidt
- Center for Neurobiology and Behavior, Department of Psychiatry, Perelman School of Medicine at the University of Pennsylvania, 125 South 31st Street, TRL Building, Rm 2214, Philadelphia, PA 19104, United States.
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Lee AM, Berny-Lang MA, Liao S, Kanso E, Kuhn P, McCarty OJT, Newton PK. A low-dimensional deformation model for cancer cells in flow. Phys Fluids (1994) 2012; 24:81903. [PMID: 23024578 PMCID: PMC3443115 DOI: 10.1063/1.4748811] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2012] [Accepted: 07/30/2012] [Indexed: 06/01/2023]
Abstract
A low-dimensional parametric deformation model of a cancer cell under shear flow is developed. The model is built around an experiment in which MDA-MB-231 adherent cells are subjected to flow with increasing shear. The cell surface deformation is imaged using differential interference contrast microscopy imaging techniques until the cell releases into the flow. We post-process the time sequence of images using an active shape model from which we obtain the principal components of deformation. These principal components are then used to obtain the parameters in an empirical constitutive equation determining the cell deformations as a function of the fluid normal and shear forces imparted. The cell surface is modeled as a 2D Gaussian interface which can be deformed with three active parameters: H (height), σ(x) (x-width), and σ(y) (y-width). Fluid forces are calculated on the cell surface by discretizing the surface with regularized Stokeslets, and the flow is driven by a stochastically fluctuating pressure gradient. The Stokeslet strengths are obtained so that viscous boundary conditions are enforced on the surface of the cell and the surrounding plate. We show that the low-dimensional model is able to capture the principal deformations of the cell reasonably well and argue that active shape models can be exploited further as a useful tool to bridge the gap between experiments, models, and numerical simulations in this biological setting.
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Affiliation(s)
- A M Lee
- Department of Aerospace & Mechanical Engineering and Department of Mathematics, University of Southern California, Los Angeles, California 90089-1191, USA
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Lee AM, Ho JWC, Chan CLW. Efficacy of psychosocial intervention in improving quality of life and psychological well-being of Chinese patients with colorectal cancer: a randomised controlled trial. Hong Kong Med J 2010; 16 Suppl 3:20-24. [PMID: 20601729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2023] Open
Affiliation(s)
- A M Lee
- Department of Psychiatry, The University of Hong Kong, Hong Kong SAR, China.
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Davies AJ, Lee AM, Taylor C, Clear AJ, Goff LK, Iqbal S, Cuthbert-Heavens D, Calaminici M, Norton AJ, Lister TA, Fitzgibbon J. A limited role for TP53 mutation in the transformation of follicular lymphoma to diffuse large B-cell lymphoma. Leukemia 2005; 19:1459-65. [PMID: 15902285 DOI: 10.1038/sj.leu.2403802] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The role of TP53 mutation in transformation of follicular lymphoma (FL) to diffuse large B-cell lymphoma (t-FL) was examined in a panel of 91 lymph node biopsies derived from 29 patients pre- and post-transformation. The entire TP53 coding sequence was screened and immunocytochemistry performed to determine expression of p53 and its key regulator MDM2. A total of 10 mutations were detected in eight patients (28%), although none were present at FL diagnosis. Mutations were not detected solely at the time of transformation; in three patients, mutated TP53 arose in at least one antecedent FL sample (6 months, 2.5 years and 4 years prior to transformation). Loss of heterozygosity at the TP53 locus occurred in 2/20 informative patients (only in t-FL samples). p53 staining was positive in 82% (9/11) of available biopsies with a missense mutation, and negative in 71% (45/63) with wtTP53. MDM2 expression was significantly higher in t-FL samples (mean 72% positive; 95% confidence interval (95% CI) 68-76%) than FL (mean 58% positive; 95% CI 54-62%) (P<0.001) but did not correlate with TP53 status. TP53 mutation has only a limited role in the transformation of FL, exerting a heterogeneous influence upon phenotypic change. In contrast, dysregulation of MDM2 is frequent and may provide a more rational therapeutic target..
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Affiliation(s)
- A J Davies
- Cancer Research UK Medical Oncology Unit, Bart's and The Royal London School of Medicine and Dentistry, London, UK.
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Abstract
AIMS Mediastinal large B-cell lymphoma (MLBCL) is a subtype of diffuse large B-cell lymphoma (DLBCL) in the WHO classification with peculiar features, such as female prevalence, young patient age and bulky presentation. It shows a B-cell phenotype with variable expression of surface immunoglobulin, negative CD21 and CD10 and positive CD30 in a large number of cases. An origin from activated thymic B cells has been suggested in several studies. A subpopulation of large, dendritic cells (asteroid cells) strongly expressing CD23 has been identified amongst thymic B cells and these could represent the normal cellular counterpart for this type of primary mediastinal large cell lymphoma. METHODS AND RESULTS To explore this possibility, we immunostained 24 cases of primary mediastinal lymphomas and 100 cases of non-mediastinal, nodal and extranodal, DLBCLs for CD23 in routinely processed paraffin-embedded tissues. CONCLUSIONS Our results show that a vast majority (70%) of mediastinal lymphomas strongly express CD23 whilst the same antigen is expressed in only 15% of non-mediastinal nodal DLBCLs and 9% of non-mediastinal extranodal DLBCLs. These results support the hypothesis that most cases of MLBCL arise from activated dendritic thymic B cells. We also suggest that CD23 should be included in the panel of antibodies currently used to characterize this subtype of DLBCL.
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Affiliation(s)
- M Calaminici
- Department of Histopathology, St Bartholomew's Hospital, London, UK.
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Kazor CE, Mitchell PM, Lee AM, Stokes LN, Loesche WJ, Dewhirst FE, Paster BJ. Diversity of bacterial populations on the tongue dorsa of patients with halitosis and healthy patients. J Clin Microbiol 2003; 41:558-63. [PMID: 12574246 PMCID: PMC149706 DOI: 10.1128/jcm.41.2.558-563.2003] [Citation(s) in RCA: 339] [Impact Index Per Article: 16.1] [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: 11/20/2022] Open
Abstract
The primary purpose of the present study was to compare the microbial profiles of the tongue dorsa of healthy subjects and subjects with halitosis by using culture-independent molecular methods. Our overall goal was to determine the bacterial diversity on the surface of the tongue dorsum as part of our ongoing efforts to identify all cultivable and not-yet-cultivated species of the oral cavity. Tongue dorsum scrapings were analyzed from healthy subjects with no complaints of halitosis and subjects with halitosis, defined as an organoleptic score of 2 or more and volatile sulfur compound levels greater than 200 ppb. 16S rRNA genes from DNA isolated from tongue dorsum scrapings were amplified by PCR with universally conserved bacterial primers and cloned into Escherichia coli. Typically, 50 to 100 clones were analyzed from each subject. Fifty-one strains isolated from the tongue dorsa of healthy subjects were also analyzed. Partial sequences of approximately 500 bases of cloned inserts from the 16S rRNA genes of isolates were compared with sequences of known species or phylotypes to determine species identity or closest relatives. Nearly complete sequences of about 1,500 bases were obtained for potentially novel species or phylotypes. In an analysis of approximately 750 clones, 92 different bacterial species were identified. About half of the clones were identified as phylotypes, of which 29 were novel to the tongue microbiota. Fifty-one of the 92 species or phylotypes were detected in more than one subject. Those species most associated with healthy subjects were Streptococcus salivarius, Rothia mucilaginosa, and an uncharacterized species of Eubacterium (strain FTB41). Streptococcus salivarius was the predominant species in healthy subjects, as it represented 12 to 40% of the total clones analyzed from each healthy subject. Overall, the predominant microbiota on the tongue dorsa of healthy subjects was different from that on the tongue dorsa of subjects with halitosis. Those species most associated with halitosis were Atopobium parvulum, a phylotype (clone BS095) of Dialister, Eubacterium sulci, a phylotype (clone DR034) of the uncultivated phylum TM7, Solobacterium moorei, and a phylotype (clone BW009) of STREPTOCOCCUS: On the basis of our ongoing efforts to obtain full 16S rRNA sequences for all cultivable and not-yet-cultivated species that colonize the oral cavity, there are now over 600 species.
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Affiliation(s)
- C E Kazor
- Department of Microbiology and Immunology, School of Medicine, University of Michigan, Ann Arbor, Michigan, USA
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Lee AM, Mennone JZ, Jones RC, Paul WS. Risk factors for hepatotoxicity associated with rifampin and pyrazinamide for the treatment of latent tuberculosis infection: experience from three public health tuberculosis clinics. Int J Tuberc Lung Dis 2002; 6:995-1000. [PMID: 12475146] [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: 02/28/2023] Open
Abstract
SETTING Three municipal tuberculosis (TB) clinics. OBJECTIVES Reports of liver injury in patients treated with a 2-month regimen of daily rifampin and pyrazinamide (2RZ) for latent TB infection have raised concern about its safety. We aimed to evaluate the safety and tolerability of 2RZ and identify risk factors for hepatotoxicity. METHODS We reviewed charts of adults started on 2RZ between 1999 and 2001. Cases with grade 3 hepatotoxicity (AST or ALT >5.0-20.0 x upper limit of normal) and grade 4 hepatotoxicity (AST or ALT >20.0 x upper limit of normal) were identified. RESULTS Of 148 patients prescribed 2RZ, 85 (57.4%) completed therapy. Grade 3 or 4 hepatotoxicity occurred in 14 patients (eight grade 4 cases). In multivariate analysis, hepatotoxicity was associated with female sex (odds ratio [OR] 4.1; 95% confidence interval [CI] 1.2-14.3) and with presumed recent infection (recent tuberculin skin test conversion or contact with a TB case) (OR 14.3; 95%CI 1.8-115), but not with alcohol use, illicit drug use, age, race, or pyrazinamide dose. CONCLUSIONS Hepatotoxicity occurred in a high proportion of patients prescribed 2RZ, and was more common among females and those with recent infection. Caution is warranted in using 2RZ in populations where its safety has not been established.
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Affiliation(s)
- A M Lee
- Communicable Disease Program, Chicago Department of Public Health, Chicago, IL 60612, USA
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Acosta D, Affolder T, Akimoto H, Albrow MG, Amaral P, Ambrose D, Amidei D, Anikeev K, Antos J, Apollinari G, Arisawa T, Artikov A, Asakawa T, Ashmanskas W, Azfar F, Azzi-Bacchetta P, Bacchetta N, Bachacou H, Bailey S, de Barbaro P, Barbaro-Galtieri A, Barnes VE, Barnett BA, Baroiant S, Barone M, Bauer G, Bedeschi F, Belforte S, Bell WH, Bellettini G, Bellinger J, Benjamin D, Bensinger J, Beretvas A, Berge JP, Berryhill J, Bhatti A, Binkley M, Bisello D, Bishai M, Blair RE, Blocker C, Bloom K, Blumenfeld B, Blusk SR, Bocci A, Bodek A, Bolla G, Bonushkin Y, Borras K, Bortoletto D, Boudreau J, Brandl A, van den Brink S, Bromberg C, Brozovic M, Brubaker E, Bruner N, Buckley-Geer E, Budagov J, Budd HS, Burkett K, Busetto G, Byon-Wagner A, Byrum KL, Cabrera S, Calafiura P, Campbell M, Carithers W, Carlson J, Carlsmith D, Caskey W, Castro A, Cauz D, Cerri A, Chan AW, Chang PS, Chang PT, Chapman J, Chen C, Chen YC, Cheng MT, Chertok M, Chiarelli G, Chirikov-Zorin I, Chlachidze G, Chlebana F, Christofek L, Chu ML, Chung JY, Chung YS, Ciobanu CI, Clark AG, Colijn AP, Connolly A, Convery ME, Conway J, Cordelli M, Cranshaw J, Cropp R, Culbertson R, Dagenhart D, D'Auria S, DeJongh F, Dell'Agnello S, Dell'Orso M, Demers S, Demortier L, Deninno M, Derwent PF, Devlin T, Dittmann JR, Dominguez A, Donati S, Done J, D'Onofrio M, Dorigo T, Eddy N, Einsweiler K, Elias JE, Engels E, Erbacher R, Errede D, Errede S, Fan Q, Fang HC, Feild RG, Fernandez JP, Ferretti C, Field RD, Fiori I, Flaugher B, Foster GW, Franklin M, Freeman J, Friedman J, Fukui Y, Furic I, Galeotti S, Gallas A, Gallinaro M, Gao T, Garcia-Sciveres M, Garfinkel AF, Gatti P, Gay C, Gerdes DW, Giannetti P, Glagolev V, Glenzinski D, Gold M, Goldstein J, Gorelov I, Goshaw AT, Gotra Y, Goulianos K, Green C, Grim G, Gris P, Grosso-Pilcher C, Guenther M, Guillian G, Guimaraes da Costa J, Haas RM, Haber C, Hahn SR, Hall C, Handa T, Handler R, Hao W, Happacher F, Hara K, Hardman AD, Harris RM, Hartmann F, Hatakeyama K, Hauser J, Heinrich J, Heiss A, Herndon M, Hill C, Hocker A, Hoffman KD, Hollebeek R, Holloway L, Huffman BT, Hughes R, Huston J, Huth J, Ikeda H, Incandela J, Introzzi G, Ivanov A, Iwai J, Iwata Y, James E, Jones M, Joshi U, Kambara H, Kamon T, Kaneko T, Karr K, Kartal S, Kasha H, Kato Y, Keaffaber TA, Kelley K, Kelly M, Khazins D, Kikuchi T, Kilminster B, Kim BJ, Kim DH, Kim HS, Kim MJ, Kim SB, Kim SH, Kim YK, Kirby M, Kirk M, Kirsch L, Klimenko S, Koehn P, Kondo K, Konigsberg J, Korn A, Korytov A, Kovacs E, Kroll J, Kruse M, Kuhlmann SE, Kurino K, Kuwabara T, Laasanen AT, Lai N, Lami S, Lammel S, Lancaster J, Lancaster M, Lander R, Lath A, Latino G, LeCompte T, Lee AM, Lee K, Leone S, Lewis JD, Lindgren M, Liss TM, Liu JB, Liu YC, Litvintsev DO, Lobban O, Lockyer NS, Loken J, Loreti M, Lucchesi D, Lukens P, Lusin S, Lyons L, Lys J, Madrak R, Maeshima K, Maksimovic P, Malferrari L, Mangano M, Mariotti M, Martignon G, Martin A, Matthews JAJ, Mayer J, Mazzanti P, McFarland KS, McIntyre P, Menguzzato M, Menzione A, Merkel P, Mesropian C, Meyer A, Miao T, Miller R, Miller JS, Minato H, Miscetti S, Mishina M, Mitselmakher G, Miyazaki Y, Moggi N, Moore C, Moore E, Moore R, Morita Y, Moulik T, Mulhearn M, Mukherjee A, Muller T, Munar A, Murat P, Murgia S, Nachtman J, Nagaslaev V, Nahn S, Nakada H, Nakano I, Nelson C, Nelson T, Neu C, Neuberger D, Newman-Holmes C, Ngan CYP, Niu H, Nodulman L, Nomerotski A, Oh SH, Oh YD, Ohmoto T, Ohsugi T, Oishi R, Okusawa T, Olsen J, Orejudos W, Pagliarone C, Palmonari F, Paoletti R, Papadimitriou V, Partos D, Patrick J, Pauletta G, Paulini M, Paus C, Pellett D, Pescara L, Phillips TJ, Piacentino G, Pitts KT, Pompos A, Pondrom L, Pope G, Popovic M, Prokoshin F, Proudfoot J, Ptohos F, Pukhov O, Punzi G, Rakitine A, Ratnikov F, Reher D, Reichold A, Renton P, Ribon A, Riegler W, Rimondi F, Ristori L, Riveline M, Robertson WJ, Robinson A, Rodrigo T, Rolli S, Rosenson L, Roser R, Rossin R, Rott C, Roy A, Ruiz A, Safonov A, St Denis R, Sakumoto WK, Saltzberg D, Sanchez C, Sansoni A, Santi L, Sato H, Savard P, Savoy-Navarro A, Schlabach P, Schmidt EE, Schmidt MP, Schmitt M, Scodellaro L, Scott A, Scribano A, Sedov A, Segler S, Seidel S, Seiya Y, Semenov A, Semeria F, Shah T, Shapiro MD, Shepard PF, Shibayama T, Shimojima M, Shochet M, Sidoti A, Siegrist J, Sill A, Sinervo P, Singh P, Slaughter AJ, Sliwa K, Smith C, Snider FD, Solodsky A, Spalding J, Speer T, Sphicas P, Spinella F, Spiropulu M, Spiegel L, Steele J, Stefanini A, Strologas J, Strumia F, Stuart D, Sumorok K, Suzuki T, Takano T, Takashima R, Takikawa K, Tamburello P, Tanaka M, Tannenbaum B, Tecchio M, Tesarek RJ, Teng PK, Terashi K, Tether S, Thompson AS, Thomson E, Thurman-Keup R, Tipton P, Tkaczyk S, Toback D, Tollefson K, Tollestrup A, Tonelli D, Toyoda H, Trischuk W, de Troconiz JF, Tseng J, Tsybychev D, Turini N, Ukegawa F, Vaiciulis T, Valls J, Vejcik S, Velev G, Veramendi G, Vidal R, Vila I, Vilar R, Volobouev I, von der Mey M, Vucinic D, Wagner RG, Wagner RL, Wallace NB, Wan Z, Wang C, Wang MJ, Wang SM, Ward B, Waschke S, Watanabe T, Waters D, Watts T, Webb R, Wenzel H, Wester WC, Wicklund AB, Wicklund E, Wilkes T, Williams HH, Wilson P, Winer BL, Winn D, Wolbers S, Wolinski D, Wolinski J, Wolinski S, Worm S, Wu X, Wyss J, Yao W, Yeh GP, Yeh P, Yoh J, Yosef C, Yoshida T, Yu I, Yu S, Yu Z, Zanetti A, Zetti F, Zucchelli S. Diffractive dijet production at sqrt[s] = 630 and 1800 GeV at the Fermilab Tevatron. Phys Rev Lett 2002; 88:151802. [PMID: 11955190 DOI: 10.1103/physrevlett.88.151802] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2001] [Indexed: 05/23/2023]
Abstract
We report a measurement of the diffractive structure function F(D)(jj) of the antiproton obtained from a study of dijet events produced in association with a leading antiproton in pp collisions at sqrt[s] = 630 GeV at the Fermilab Tevatron. The ratio of F(D)(jj) at sqrt[s] = 630 GeV to F(D)(jj) obtained from a similar measurement at sqrt[s] = 1800 GeV is compared with expectations from QCD factorization and other theoretical predictions. We also report a measurement of the xi ( x-Pomeron) and beta ( x of parton in Pomeron) dependence of F(D)(jj) at sqrt[s] = 1800 GeV. In the region 0.035<xi<0.095, /t/<1 GeV2, and beta<0.5, F(D)(jj)(beta,xi) is found to be of the form beta(-1.0+/-0.1)xi(-0.9+/-0.1), which obeys beta-xi factorization.
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Affiliation(s)
- D Acosta
- University of Florida, Gainesville, Florida 32611, USA
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Affolder T, Akimoto H, Akopian A, Albrow MG, Amaral P, Amidei D, Anikeev K, Antos J, Apollinari G, Arisawa T, Artikov A, Asakawa T, Ashmanskas W, Azfar F, Azzi-Bacchetta P, Bacchetta N, Bachacou H, Bailey S, de Barbaro P, Barbaro-Galtieri A, Barnes VE, Barnett BA, Baroiant S, Barone M, Battle C, Bauer G, Bedeschi F, Belforte S, Bell WH, Bellettini G, Bellinger J, Benjamin D, Bensinger J, Beretvas A, Berge JP, Berryhill J, Bhatti A, Binkley M, Bisello D, Bishai M, Blair RE, Blocker C, Bloom K, Blumenfeld B, Blusk SR, Bocci A, Bodek A, Bokhari W, Bolla G, Bonushkin Y, Bortoletto D, Boudreau J, Brandl A, van den Brink S, Bromberg C, Brozovic M, Brubaker E, Bruner N, Buckley-Geer E, Budagov J, Budd HS, Burkett K, Busetto G, Byon-Wagner A, Byrum KL, Cabrera S, Calafiura P, Campbell M, Carithers W, Carlson J, Carlsmith D, Caskey W, Castro A, Cauz D, Cerri A, Chan AW, Chang PS, Chang PT, Chapman J, Chen C, Chen YC, Cheng MT, Chertok M, Chiarelli G, Chirikov-Zorin I, Chlachidze G, Chlebana F, Christofek L, Chu ML, Chung YS, Ciobanu CI, Clark AG, Connolly A, Conway J, Cordelli M, Cranshaw J, Cropp R, Culbertson R, Dagenhart D, D'Auria S, DeJongh F, Dell'Agnello S, Dell'Orso M, Demortier L, Deninno M, Derwent PF, Devlin T, Dittmann JR, Dominguez A, Donati S, Done J, D'Onofrio M, Dorigo T, Eddy N, Einsweiler K, Elias JE, Engels E, Erbacher R, Errede D, Errede S, Fan Q, Fang HC, Feild RG, Fernandez JP, Ferretti C, Field RD, Fiori I, Flaugher B, Foster GW, Franklin M, Freeman J, Friedman J, Frisch F, Fukui Y, Furic I, Galeotti S, Gallas A, Gallinaro M, Gao T, Garcia-Sciveres M, Garfinkel AF, Gatti P, Gay C, Gerdes DW, Giannetti P, Giromini P, Glagolev V, Glenzinski D, Gold M, Goldstein J, Gorelov I, Goshaw AT, Gotra Y, Goulianos K, Green C, Grim G, Gris P, Groer L, Grosso-Pilcher C, Guenther M, Guillian G, Guimaraes da Costa J, Haas RM, Haber C, Hahn SR, Hall C, Handa T, Handler R, Hao W, Happacher F, Hara K, Hardman AD, Harris RM, Hartmann F, Hatakeyama K, Hauser J, Heinrich J, Heiss A, Herndon M, Hill C, Hoffman KD, Holck C, Hollebeek R, Holloway L, Huffman BT, Hughes R, Huston J, Huth J, Ikeda H, Incandela J, Introzzi G, Iwai J, Iwata Y, James E, Jones M, Joshi U, Kambara H, Kamon T, Kaneko T, Karr K, Kasha H, Kato Y, Keaffaber TA, Kelley K, Kelly M, Kennedy RD, Kephart R, Khazins D, Kikuchi T, Kilminster B, Kim BJ, Kim DH, Kim HS, Kim MJ, Kim SB, Kim SH, Kim YK, Kirby M, Kirk M, Kirsch L, Klimenko S, Koehn P, Kondo K, Kongisberg J, Korn A, Korytov A, Kovacs E, Kroll J, Kruse M, Kuhlmann SE, Kurino K, Kuwabara T, Laasanen AT, Lai N, Lami S, Lammel S, Lancaster J, Lancaster M, Lander R, Lath A, Latino G, LeCompte T, Lee AM, Lee K, Leone S, Lewis JD, Lindgren M, Liss TM, Liu JB, Liu YC, Litvintsev DO, Lobban O, Lockyer N, Loken J, Loreti M, Lucchesi D, Lukens P, Lusin S, Lyons L, Lys J, Madrak R, Maeshima K, Maksimovic P, Malferrari L, Mangano M, Mariotti M, Martignon G, Martin A, Matthews JAJ, Mayer J, Mazzanti P, McFarland KS, McIntyre P, McKigney E, Menguzzato M, Menzione A, Mesropian C, Meyer A, Miao T, Miller R, Miller JS, Minato H, Miscetti S, Mishina M, Mitselmakher G, Moggi N, Moore E, Moore R, Morita Y, Moulik T, Mulhearn M, Mukherjee A, Muller T, Munar A, Murat P, Murgia S, Nachtman J, Nagaslaev V, Nahn S, Nakada H, Nakano I, Nelson C, Nelson T, Neu C, Neuberger D, Newman-Holmes C, Ngan CYP, Niu H, Nodulman L, Nomerotski A, Oh SH, Oh YD, Ohmoto T, Ohsugi T, Oishi R, Okusawa T, Olsen J, Orejudos W, Pagliarone C, Palmonari F, Paoletti R, Papadimitriou V, Partos D, Patrick J, Pauletta G, Paulini M, Paus C, Pellett D, Pescara L, Phillips TJ, Piacentino G, Pitts KT, Pompos A, Pondrom L, Pope G, Popovic M, Prokoshin F, Proudfoot J, Ptohos F, Pukhov O, Punzi G, Rakitine A, Ratnikov F, Reher D, Reichold A, Ribon A, Riegler W, Rimondi F, Ristori L, Riveline M, Robertson WJ, Robinson A, Rodrigo T, Rolli S, Rosenson L, Roser R, Rossin R, Rott C, Roy A, Ruiz A, Safonov A, St Denis R, Sakumoto WK, Saltzberg D, Sanchez C, Sansoni A, Santi L, Sato H, Savard P, Schlabach P, Schmidt EE, Schmidt MP, Schmitt M, Scodellaro L, Scott A, Scribano A, Segler S, Seidel S, Seiya Y, Semenov A, Semeria F, Shah T, Shapiro MD, Shepard PF, Shibayama T, Shimojima M, Shochet M, Sidoti A, Siegrist J, Sill A, Sinervo P, Singh P, Slaughter AJ, Sliwa K, Smith C, Snider FD, Solodsky A, Spalding J, Speer T, Sphicas P, Spinella F, Spiropulu M, Spiegel L, Steele J, Stefanini A, Strologas J, Strumia F, Stuart D, Sumorok K, Suzuki T, Takano T, Takashima R, Takikawa K, Tamburello P, Tanaka M, Tannenbaum B, Tecchio M, Tesarek R, Teng PK, Terashi K, Tether S, Thompson AS, Thurman-Keup R, Tipton P, Tkaczyk S, Toback D, Tollefson K, Tollestrup A, Tonelli D, Toyoda H, Trischuk W, de Troconiz JF, Tseng J, Turini N, Ukegawa F, Vaiciulis T, Valls J, Vejcik S, Velev G, Veramendi G, Vidal R, Vila I, Vilar R, Volobouev I, von der Mey M, Vucinic D, Wagner RG, Wagner RL, Wallace NB, Wan Z, Wang C, Wang MJ, Ward B, Waschke S, Watanabe T, Waters D, Watts T, Webb R, Wenzel H, Wester WC, Wicklund AB, Wicklund E, Wilkes T, Williams HH, Wilson P, Winer BL, Winn D, Wolbers S, Wolinski D, Wolinski J, Wolinski S, Worm S, Wu X, Wyss J, Yao W, Yeh GP, Yeh P, Yoh J, Yosef C, Yoshida T, Yu I, Yu S, Yu Z, Zanetti A, Zetti F, Zucchelli S. Search for new heavy particles in the WZ0 final state in pp collisions at square root[s] = 1.8 TeV. Phys Rev Lett 2002; 88:071806. [PMID: 11863887 DOI: 10.1103/physrevlett.88.071806] [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] [Received: 08/02/2001] [Indexed: 05/23/2023]
Abstract
We present the first general search for new heavy particles, X, which decay via X --> WZ0 --> e(nu)+jj as a function of M(X) and Gamma(X) in pp collisions at square root[s] = 1.8 TeV. No evidence is found for production of X in 110 pb(-1) of data collected by the Collider Detector at Fermilab. General cross section limits are set at the 95% C.L. as a function of mass and width of the new particle. The results are further interpreted as mass limits on the production of new heavy charged vector bosons which decay via W' --> WZ0 in an extended gauge model as a function of the width, Gamma(W'), and mixing factor between the W' and the standard model W bosons.
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Affiliation(s)
- T Affolder
- Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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Affolder T, Akimoto H, Akopian A, Albrow MG, Amaral P, Amidei D, Anikeev K, Antos J, Apollinari G, Arisawa T, Artikov A, Asakawa T, Ashmanskas W, Azfar F, Azzi-Bacchetta P, Bacchetta N, Bachacou H, Bailey S, de Barbaro P, Barbaro-Galtieri A, Barnes VE, Barnett BA, Baroiant S, Barone M, Bauer G, Bedeschi F, Belforte S, Bell WH, Bellettini G, Bellinger J, Benjamin D, Bensinger J, Beretvas A, Berge JP, Berryhill J, Bhatti A, Binkley M, Bisello D, Bishai M, Blair RE, Blocker C, Bloom K, Blumenfeld B, Blusk SR, Bocci A, Bodek A, Bokhari W, Bolla G, Bonushkin Y, Bortoletto D, Boudreau J, Brandl A, van den Brink S, Bromberg C, Brozovic M, Brubaker E, Bruner N, Buckley-Geer E, Budagov J, Budd HS, Burkett K, Busetto G, Byon-Wagner A, Byrum KL, Cabrera S, Calafiura P, Campbell M, Carithers W, Carlson J, Carlsmith D, Caskey W, Castro A, Cauz D, Cerri A, Chan AW, Chang PS, Chang PT, Chapman J, Chen C, Chen YC, Cheng MT, Chertok M, Chiarelli G, Chirikov-Zorin I, Chlachidze G, Chlebana F, Christofek L, Chu ML, Chung YS, Ciobanu CI, Clark AG, Colijn AP, Connolly A, Conway J, Cordelli M, Cranshaw J, Cropp R, Culbertson R, Dagenhart D, D'Auria S, DeJongh F, Dell'Agnello S, Dell'Orso M, Demortier L, Deninno M, Derwent PF, Devlin T, Dittmann JR, Dominguez A, Donati S, Done J, D'Onofrio M, Dorigo T, Eddy N, Einsweiler K, Elias JE, Engels E, Erbacher R, Errede D, Errede S, Fan Q, Fang HC, Feild RG, Fernandez JP, Ferretti C, Field RD, Fiori I, Flaugher B, Foster GW, Franklin M, Freeman J, Friedman J, Fukui Y, Furic I, Galeotti S, Gallas A, Gallinaro M, Gao T, Garcia-Sciveres M, Garfinkel AF, Gatti P, Gay C, Gerdes DW, Giannetti P, Giromini P, Glagolev V, Glenzinski D, Gold M, Goldstein J, Gorelov I, Goshaw AT, Gotra Y, Goulianos K, Green C, Grim G, Gris P, Groer L, Grosso-Pilcher C, Guenther M, Guillian G, Guimaraes da Costa J, Haas RM, Haber C, Hahn SR, Hall C, Handa T, Handler R, Hao W, Happacher F, Hara K, Hardman AD, Harris RM, Hartmann F, Hatakeyama K, Hauser J, Heinrich J, Heiss A, Herndon M, Hill C, Hoffman KD, Holck C, Hollebeek R, Holloway L, Huffman BT, Hughes R, Huston J, Huth J, Ikeda H, Incandela J, Introzzi G, Iwai J, Iwata Y, James E, Jones M, Joshi U, Kambara H, Kamon T, Kaneko T, Karr K, Kasha H, Kato Y, Keaffaber TA, Kelley K, Kelly M, Kennedy RD, Kephart R, Khazins D, Kikuchi T, Kilminster B, Kim BJ, Kim DH, Kim HS, Kim MJ, Kim SB, Kim SH, Kim YK, Kirby M, Kirk M, Kirsch L, Klimenko S, Koehn P, Kondo K, Konigsberg J, Korn A, Korytov A, Kovacs E, Kroll J, Kruse M, Kuhlmann SE, Kurino K, Kuwabara T, Laasanen AT, Lai N, Lami S, Lammel S, Lancaster J, Lancaster M, Lander R, Lath A, Latino G, LeCompte T, Lee AM, Lee K, Leone S, Lewis JD, Lindgren M, Liss TM, Liu JB, Liu YC, Litvintsev DO, Lobban O, Lockyer N, Loken J, Loreti M, Lucchesi D, Lukens P, Lusin S, Lyons L, Lys J, Madrak R, Maeshima K, Maksimovic P, Malferrari L, Mangano M, Mariotti M, Martignon G, Martin A, Matthews JAJ, Mayer J, Mazzanti P, McFarland KS, McIntyre P, McKigney E, Menguzzato M, Menzione A, Merkel P, Mesropian C, Meyer A, Miao T, Miller R, Miller JS, Minato H, Miscetti S, Mishina M, Mitselmakher G, Moggi N, Moore E, Moore R, Morita Y, Moulik T, Mulhearn M, Mukherjee A, Muller T, Munar A, Murat P, Murgia S, Nachtman J, Nagaslaev V, Nahn S, Nakada H, Nakano I, Nelson C, Nelson T, Neu C, Neuberger D, Newman-Holmes C, Ngan CYP, Niu H, Nodulman L, Nomerotski A, Oh SH, Oh YD, Ohmoto T, Ohsugi T, Oishi R, Okusawa T, Olsen J, Orejudos W, Pagliarone C, Palmonari F, Paoletti R, Papadimitriou V, Partos D, Patrick J, Pauletta G, Paulini M, Paus C, Pellett D, Pescara L, Phillips TJ, Piacentino G, Pitts KT, Pompos A, Pondrom L, Pope G, Popovic M, Prokoshin F, Proudfoot J, Ptohos F, Pukhov O, Punzi G, Rakitine A, Ratnikov F, Reher D, Reichold A, Ribon A, Riegler W, Rimondi F, Ristori L, Riveline M, Robertson WJ, Robinson A, Rodrigo T, Rolli S, Rosenson L, Roser R, Rossin R, Rott C, Roy A, Ruiz A, Safonov A, St Denis R, Sakumoto WK, Saltzberg D, Sanchez C, Sansoni A, Santi L, Sato H, Savard P, Schlabach P, Schmidt EE, Schmidt MP, Schmitt M, Scodellaro L, Scott A, Scribano A, Segler S, Seidel S, Seiya Y, Semenov A, Semeria F, Shah T, Shapiro MD, Shepard PF, Shibayama T, Shimojima M, Shochet M, Sidoti A, Siegrist J, Sill A, Sinervo P, Singh P, Slaughter AJ, Sliwa K, Smith C, Snider FD, Solodsky A, Spalding J, Speer T, Sphicas P, Spinella F, Spiropulu M, Spiegel L, Steele J, Stefanini A, Strologas J, Strumia F, Stuart D, Sumorok K, Suzuki T, Takano T, Takashima R, Takikawa K, Tamburello P, Tanaka M, Tannenbaum B, Tecchio M, Tesarek R, Teng PK, Terashi K, Tether S, Thompson AS, Thurman-Keup R, Tipton P, Tkaczyk S, Toback D, Tollefson K, Tollestrup A, Tonelli D, Toyoda H, Trischuk W, de Troconiz JF, Tseng J, Turini N, Ukegawa F, Vaiciulis T, Valls J, Vejcik S, Velev G, Veramendi G, Vidal R, Vila I, Vilar R, Volobouev I, von der Mey M, Vucinic D, Wagner RG, Wagner RL, Wallace NB, Wan Z, Wang C, Wang MJ, Ward B, Waschke S, Watanabe T, Waters D, Watts T, Webb R, Wenzel H, Wester WC, Wicklund AB, Wicklund E, Wilkes T, Williams HH, Wilson P, Winer BL, Winn D, Wolbers S, Wolinski D, Wolinski J, Wolinski S, Worm S, Wu X, Wyss J, Yao W, Yeh GP, Yeh P, Yoh J, Yosef C, Yoshida T, Yu I, Yu S, Yu Z, Zanetti A, Zetti F, Zucchelli S. Study of B0 --> J/psiK(*)0pi(+)pi(-) decays with the collider detector at Fermilab. Phys Rev Lett 2002; 88:071801. [PMID: 11863882 DOI: 10.1103/physrevlett.88.071801] [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] [Received: 07/31/2001] [Indexed: 05/23/2023]
Abstract
We report a study of the decays B0 --> J/psiK(*)0pi(+)pi(-), which involve the creation of a uu or dd quark pair in addition to a b -->c(cs) decay. The data sample consists of 110 pb(-1) of pp collisions at square root[s] = 1.8 TeV collected by the CDF detector at the Fermilab Tevatron collider during 1992-1995. We measure the branching fractions to be B(B0 --> J/psiK(*0)pi(+)pi(-)) = (6.6 +/- 1.9 +/- 1.1)x10(-4) and B(B0 --> J/psiK0pi(+)pi(-)) = (10.3 +/- 3.3 +/- 1.5)x10(-4). Evidence is seen for contributions from psi(2S)K(*)0, J/psiK0rho(0), J/psiK(*+)pi(-), and J/psiK1(1270).
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Affiliation(s)
- T Affolder
- Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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Affolder T, Akimoto H, Akopian A, Albrow MG, Amaral P, Amidei D, Anikeev K, Antos J, Apollinari G, Arisawa T, Artikov A, Asakawa T, Ashmanskas W, Azfar F, Azzi-Bacchetta P, Bacchetta N, Bachacou H, Bailey S, de Barbaro P, Barbaro-Galtieri A, Barnes VE, Barnett BA, Baroiant S, Barone M, Bauer G, Bedeschi F, Belforte S, Bell WH, Bellettini G, Bellinger J, Benjamin D, Bensinger J, Beretvas A, Berge JP, Berryhill J, Bhatti A, Binkley M, Bisello D, Bishai M, Blair RE, Blocker C, Bloom K, Blumenfeld B, Blusk SR, Bocci A, Bodek A, Bokhari W, Bolla G, Bonushkin Y, Bortoletto D, Boudreau J, Brandl A, van den Brink S, Bromberg C, Brozovic M, Brubaker E, Bruner N, Buckley-Geer E, Budagov J, Budd HS, Burkett K, Busetto G, Byon-Wagner A, Byrum KL, Cabrera S, Calafiura P, Campbell M, Carithers W, Carlson J, Carlsmith D, Caskey W, Castro A, Cauz D, Cerri A, Chan AW, Chang PS, Chang PT, Chapman J, Chen C, Chen YC, Cheng MT, Chertok M, Chiarelli G, Chirikov-Zorin I, Chlachidze G, Chlebana F, Christofek L, Chu ML, Chung YS, Ciobanu CI, Clark AG, Connolly A, Conway J, Cordelli M, Cranshaw J, Cropp R, Culbertson R, Dagenhart D, D'Auria S, DeJongh F, Dell'Agnello S, Dell'Orso M, Demortier L, Deninno M, Derwent PF, Devlin T, Dittmann JR, Dominguez A, Donati S, Done J, D'Onofrio M, Dorigo T, Eddy N, Einsweiler K, Elias JE, Engels E, Erbacher R, Errede D, Errede S, Fan Q, Feild RG, Fernandez JP, Ferretti C, Field RD, Fiori I, Flaugher B, Foster GW, Franklin M, Freeman J, Friedman J, Frisch HJ, Fukui Y, Furic I, Galeotti S, Gallas A, Gallinaro M, Gao T, Garcia-Sciveres M, Garfinkel AF, Gatti P, Gay C, Gerdes DW, Giannetti P, Giromini P, Glagolev V, Glenzinski D, Gold M, Goldstein J, Gorelov I, Goshaw AT, Gotra Y, Goulianos K, Green C, Grim G, Gris P, Groer L, Grosso-Pilcher C, Guenther M, Guillian G, Guimaraes da Costa J, Haas RM, Haber C, Hahn SR, Hall C, Handa T, Handler R, Hao W, Happacher F, Hara K, Hardman AD, Harris RM, Hartmann F, Hatakeyama K, Hauser J, Heinrich J, Heiss A, Herndon M, Hill C, Hoffman KD, Holck C, Hollebeek R, Holloway L, Hughes R, Huston J, Huth J, Ikeda H, Incandela J, Introzzi G, Iwai J, Iwata Y, James E, Jones M, Joshi U, Kambara H, Kamon T, Kaneko T, Karr K, Kasha H, Kato Y, Keaffaber TA, Kelley K, Kelly M, Kennedy RD, Kephart R, Khazins D, Kikuchi T, Kilminster B, Kim BJ, Kim DH, Kim HS, Kim MJ, Kim SB, Kim SH, Kim YK, Kirby M, Kirk M, Kirsch L, Klimenko S, Koehn P, Kondo K, Konigsberg J, Korn A, Korytov A, Kovacs E, Kroll J, Kruse M, Kuhlmann SE, Kurino K, Kuwabara T, Laasanen AT, Lai N, Lami S, Lammel S, Lancaster J, Lancaster M, Lander R, Lath A, Latino G, LeCompte T, Lee AM, Lee K, Leone S, Lewis JD, Lindgren M, Liss TM, Liu JB, Liu YC, Litvintsev DO, Lobban O, Lockyer N, Loken J, Loreti M, Lucchesi D, Lukens P, Lusin S, Lyons L, Lys J, Madrak R, Maeshima K, Maksimovic P, Malferrari L, Mangano M, Mariotti M, Martignon G, Martin A, Matthews JAJ, Mayer J, Mazzanti P, McFarland KS, McIntyre P, McKigney E, Menguzzato M, Menzione A, Mesropian C, Meyer A, Miao T, Miller R, Miller JS, Minato H, Miscetti S, Mishina M, Mitselmakher G, Moggi N, Moore E, Moore R, Morita Y, Moulik T, Mulhearn M, Mukherjee A, Muller T, Munar A, Murat P, Murgia S, Nachtman J, Nagaslaev V, Nahn S, Nakada H, Nakano I, Nelson C, Nelson T, Neu C, Neuberger D, Newman-Holmes C, Ngan CYP, Niu H, Nodulman L, Nomerotski A, Oh SH, Oh YD, Ohmoto T, Ohsugi T, Oishi R, Okusawa T, Olsen J, Orejudos W, Pagliarone C, Palmonari F, Paoletti R, Papadimitriou V, Partos D, Patrick J, Pauletta G, Paulini M, Paus C, Pescara L, Phillips TJ, Piacentino G, Pitts KT, Pompos A, Pondrom L, Pope G, Popovic M, Prokoshin F, Proudfoot J, Ptohos F, Pukhov O, Punzi G, Rakitine A, Ratnikov F, Reher D, Reichold A, Ribon A, Riegler W, Rimondi F, Ristori L, Riveline M, Robertson WJ, Robinson A, Rodrigo T, Rolli S, Rosenson L, Roser R, Rossin R, Roy A, Ruiz A, Safonov A, St Denis R, Sakumoto WK, Saltzberg D, Sanchez C, Sansoni A, Santi L, Sato H, Savard P, Schlabach P, Schmidt EE, Schmidt MP, Schmitt M, Scodellaro L, Scott A, Scribano A, Segler S, Seidel S, Seiya Y, Semenov A, Semeria F, Shah T, Shapiro MD, Shepard PF, Shibayama T, Shimojima M, Shochet M, Sidoti A, Siegrist J, Sill A, Sinervo P, Singh P, Slaughter AJ, Sliwa K, Smith C, Snider FD, Solodsky A, Spalding J, Speer T, Sphicas P, Spinella F, Spiropulu M, Spiegel L, Steele J, Stefanini A, Strologas J, Strumia F, Stuart D, Sumorok K, Suzuki T, Takano T, Takashima R, Takikawa K, Tamburello P, Tanaka M, Tannenbaum B, Tecchio M, Tesarek R, Teng PK, Terashi K, Tether S, Thompson AS, Thurman-Keup R, Tipton P, Tkaczyk S, Toback D, Tollefson K, Tollestrup A, Tonelli D, Toyoda H, Trischuk W, de Troconiz JF, Tseng J, Turini N, Ukegawa F, Vaiciulis T, Valls J, Vejcik S, Velev G, Veramendi G, Vidal R, Vila I, Vilar R, Volobouev I, von der Mey M, Vucinic D, Wagner RG, Wagner RL, Wallace NB, Wan Z, Wang C, Wang MJ, Ward B, Waschke S, Watanabe T, Waters D, Watts T, Webb R, Wenzel H, Wester WC, Wicklund AB, Wicklund E, Wilkes T, Williams HH, Wilson P, Winer BL, Winn D, Wolbers S, Wolinski D, Wolinski J, Wolinski S, Worm S, Wu X, Wyss J, Yao W, Yagil A, Yeh GP, Yoh J, Yosef C, Yoshida T, Yu I, Yu S, Yu Z, Zanetti A, Zetti F, Zucchelli S. Search for gluinos and scalar quarks in pp collisions at square root[s] = 1.8 TeV using the missing energy plus multijets signature. Phys Rev Lett 2002; 88:041801. [PMID: 11801105 DOI: 10.1103/physrevlett.88.041801] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2001] [Indexed: 05/23/2023]
Abstract
We have performed a search for gluinos (g) and scalar quarks (q) in a data sample of 84 pb(-1) of pp collisions at square root[s] = 1.8 TeV, recorded by the Collider Detector at Fermilab. We investigate the final state of large missing transverse energy and three or more jets, a characteristic signature in R-parity-conserving supersymmetric models. The analysis has been performed "blind," in that the inspection of the signal region is made only after the predictions from standard model backgrounds have been calculated. Comparing the data with predictions of constrained supersymmetric models, we exclude gluino masses below 195 GeV/c2 (95% C.L.), independent of the squark mass. For the case m(q) approximately m(g), gluino masses below 300 GeV/c2 are excluded.
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Affiliation(s)
- T Affolder
- Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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Affolder T, Akimoto H, Akopian A, Albrow MG, Amaral P, Amidei D, Anikeev K, Antos J, Apollinari G, Arisawa T, Artikov A, Asakawa T, Ashmanskas W, Azfar F, Azzi-Bacchetta P, Bacchetta N, Bachacou H, Bailey S, de Barbaro P, Barbaro-Galtieri A, Barnes VE, Barnett BA, Baroiant S, Barone M, Bauer G, Bedeschi F, Belforte S, Bell WH, Bellettini G, Bellinger J, Benjamin D, Bensinger J, Beretvas A, Berge JP, Berryhill J, Bhatti A, Binkley M, Bisello D, Bishai M, Blair RE, Blocker C, Bloom K, Blumenfeld B, Blusk SR, Bocci A, Bodek A, Bokhari W, Bolla G, Bonushkin Y, Bortoletto D, Boudreau J, Brandl A, van den Brink S, Bromberg C, Brozovic M, Brubaker E, Bruner N, Buckley-Geer E, Budagov J, Budd HS, Burkett K, Busetto G, Byon-Wagner A, Byrum KL, Cabrera S, Calafiura P, Campbell M, Carithers W, Carlson J, Carlsmith D, Caskey W, Castro A, Cauz D, Cerri A, Chan AW, Chang PS, Chang PT, Chapman J, Chen C, Chen YC, Cheng MT, Chertok M, Chiarelli G, Chirikov-Zorin I, Chlachidze G, Chlebana F, Christofek L, Chu ML, Chung YS, Ciobanu CI, Clark AG, Colijn AP, Connolly A, Convery M, Conway J, Cordelli M, Cranshaw J, Cropp R, Culbertson R, Dagenhart D, D'Auria S, DeJongh F, Dell'Agnello S, Dell'Orso M, Demers S, Demortier L, Deninno M, Derwent PF, Devlin T, Dittmann JR, Dominguez A, Donati S, Done J, D'Onofrio M, Dorigo T, Eddy N, Einsweiler K, Elias JE, Engels E, Erbacher R, Errede D, Errede S, Fan Q, Fang HC, Feild RG, Fernandez JP, Ferretti C, Field RD, Fiori I, Flaugher B, Foster GW, Franklin M, Freeman J, Friedman J, Fukui Y, Furic I, Galeotti S, Gallas A, Gallinaro M, Gao T, Garcia-Sciveres M, Garfinkel AF, Gatti P, Gay C, Gerdes DW, Giannetti P, Giromini P, Glagolev V, Glenzinski D, Gold M, Goldstein J, Gorelov I, Goshaw AT, Gotra Y, Goulianos K, Green C, Grim G, Gris P, Groer L, Grosso-Pilcher C, Guenther M, Guillian G, Guimaraes da Costa J, Haas RM, Haber C, Hahn SR, Hall C, Handa T, Handler R, Hao W, Happacher F, Hara K, Hardman AD, Harris RM, Hartmann F, Hatakeyama K, Hauser J, Heinrich J, Heiss A, Herndon M, Hill C, Hoffman KD, Holck C, Hollebeek R, Holloway L, Huffman BT, Hughes R, Huston J, Huth J, Ikeda H, Incandela J, Introzzi G, Ivanov A, Iwai J, Iwata Y, James E, Jones M, Joshi U, Kambara H, Kamon T, Kaneko T, Karr K, Kartal S, Kasha H, Kato Y, Keaffaber TA, Kelley K, Kelly M, Khazins D, Kikuchi T, Kilminster B, Kim BJ, Kim DH, Kim HS, Kim MJ, Kim SB, Kim SH, Kim YK, Kirby M, Kirk M, Kirsch L, Klimenko S, Koehn P, Kondo K, Konigsberg J, Korn A, Korytov A, Kovacs E, Kroll J, Kruse M, Kuhlmann SE, Kurino K, Kuwabara T, Laasanen AT, Lai N, Lami S, Lammel S, Lancaster J, Lancaster M, Lander R, Lath A, Latino G, LeCompte T, Lee AM, Lee K, Leone S, Lewis JD, Lindgren M, Liss TM, Liu JB, Liu YC, Litvintsev DO, Lobban O, Lockyer N, Loken J, Loreti M, Lucchesi D, Lukens P, Lusin S, Lyons L, Lys J, Madrak R, Maeshima K, Maksimovic P, Malferrari L, Mangano M, Mariotti M, Martignon G, Martin A, Matthews JAJ, Mayer J, Mazzanti P, McFarland KS, McIntyre P, McKigney E, Menguzzato M, Menzione A, Merkel P, Mesropian C, Meyer A, Miao T, Miller R, Miller JS, Minato H, Miscetti S, Mishina M, Mitselmakher G, Miyazaki Y, Moggi N, Moore E, Moore R, Morita Y, Moulik T, Mulhearn M, Mukherjee A, Muller T, Munar A, Murat P, Murgia S, Nachtman J, Nagaslaev V, Nahn S, Nakada H, Nakano I, Nelson C, Nelson T, Neu C, Neuberger D, Newman-Holmes C, Ngan CYP, Niu H, Nodulman L, Nomerotski A, Oh SH, Oh YD, Ohmoto T, Ohsugi T, Oishi R, Okusawa T, Olsen J, Orejudos W, Pagliarone C, Palmonari F, Paoletti R, Papadimitriou V, Partos D, Patrick J, Pauletta G, Paulini M, Paus C, Pellett D, Pescara L, Phillips TJ, Piacentino G, Pitts KT, Pompos A, Pondrom L, Pope G, Popovic M, Prokoshin F, Proudfoot J, Ptohos F, Pukhov O, Punzi G, Rakitine A, Ratnikov F, Reher D, Reichold A, Renton P, Ribon A, Riegler W, Rimondi F, Ristori L, Riveline M, Robertson WJ, Robinson A, Rodrigo T, Rolli S, Rosenson L, Roser R, Rossin R, Rott C, Roy A, Ruiz A, Safonov A, St Denis R, Sakumoto WK, Saltzberg D, Sanchez C, Sansoni A, Santi L, Sato H, Savard P, Schlabach P, Schmidt EE, Schmidt MP, Schmitt M, Scodellaro L, Scott A, Scribano A, Segler S, Seidel S, Seiya Y, Semenov A, Semeria F, Shah T, Shapiro MD, Shepard PF, Shibayama T, Shimojima M, Shochet M, Sidoti A, Siegrist J, Sill A, Sinervo P, Singh P, Slaughter AJ, Sliwa K, Smith C, Snider FD, Solodsky A, Spalding J, Speer T, Sphicas P, Spinella F, Spiropulu M, Spiegel L, Steele J, Stefanini A, Strologas J, Strumia F, Stuart D, Sumorok K, Suzuki T, Takano T, Takashima R, Takikawa K, Tamburello P, Tanaka M, Tannenbaum B, Tecchio M, Tesarek R, Teng PK, Terashi K, Tether S, Thompson AS, Thurman-Keup R, Tipton P, Tkaczyk S, Toback D, Tollefson K, Tollestrup A, Tonelli D, Toyoda H, Trischuk W, de Troconiz JF, Tseng J, Turini N, Ukegawa F, Vaiciulis T, Valls J, Vejcik S, Velev G, Veramendi G, Vidal R, Vila I, Vilar R, Volobouev I, von der Mey M, Vucinic D, Wagner RG, Wagner RL, Wallace NB, Wan Z, Wang C, Wang MJ, Ward B, Waschke S, Watanabe T, Waters D, Watts T, Webb R, Wenzel H, Wester WC, Wicklund AB, Wicklund E, Wilkes T, Williams HH, Wilson P, Winer BL, Winn D, Wolbers S, Wolinski D, Wolinski J, Wolinski S, Worm S, Wu X, Wyss J, Yao W, Yeh GP, Yeh P, Yoh J, Yosef C, Yoshida T, Yu I, Yu S, Yu Z, Zanetti A, Zetti F, Zucchelli S. Measurement of the strong coupling constant from inclusive jet production at the Tevatron pp collider. Phys Rev Lett 2002; 88:042001. [PMID: 11801109 DOI: 10.1103/physrevlett.88.042001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2001] [Indexed: 05/23/2023]
Abstract
We report a measurement of the strong coupling constant, alpha(s)(MZ), extracted from inclusive jet production in pp collisions at square root[s] = 1800 GeV. The QCD prediction for the evolution of alpha(s) with jet transverse energy ET is tested over the range 40<ET<450 GeV using ET for the renormalization scale. The data show good agreement with QCD in the region below 250 GeV. The value of alpha(s) at the mass of the Z0 boson averaged over the range 40<ET<250 GeV is found to be alpha(s)(MZ) = 0.1178+/-0.0001(stat)+0.0081(-0.0095)(expt. syst). The associated theoretical uncertainties are mainly due to the choice of renormalization scale ((+6%)(-4%)) and input parton distribution functions (5%).
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Affiliation(s)
- T Affolder
- Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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Runciman DJ, Lee AM, Reed KFM, Walsh JR. Dicoumarol toxicity in cattle associated with ingestion of silage containing sweet vernal grass (Anthoxanthum odoratum). Aust Vet J 2002; 80:28-32. [PMID: 12180874 DOI: 10.1111/j.1751-0813.2002.tb12041.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A diagnosis of dicoumarol toxicity in a herd of Friesian cattle was made following investigation of the deaths of three mature cows and eleven yearling heifers. Affected stock had been fed wrapped, bailed silage containing approximately 90% sweet vernal grass (Anthoxanthum odoratum). Sweet vernal grass contains coumarin, which can be converted to dicoumarol, a vitamin K antagonist, through the action of moulds. Most deaths were preceded by lethargy, severe anaemia and subcutaneous and internal haemorrhage. Dicoumarol toxicosis was suspected based on clinical signs, necropsy findings and prolonged prothrombin and activated partial thromboplastin times. Dicoumarol analysis of blood from affected animals and silage confirmed the diagnosis. Activated partial thromboplastin time Haemoglobin Packed cell volume Prothrombin time Red cell count
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Affolder T, Akimoto H, Akopian A, Albrow MG, Amaral P, Amidei D, Anikeev K, Antos J, Apollinari G, Arisawa T, Artikov A, Asakawa T, Ashmanskas W, Azfar F, Azzi-Bacchetta P, Bacchetta N, Bachacou H, Bailey S, de Barbaro P, Barbaro-Galtieri A, Barnes VE, Barnett BA, Baroiant S, Barone M, Bauer G, Bedeschi F, Belforte S, Bell WH, Bellettini G, Bellinger J, Benjamin D, Bensinger J, Beretvas A, Berge JP, Berryhill J, Bhatti A, Binkley M, Bisello D, Bishai M, Blair RE, Blocker C, Bloom K, Blumenfeld B, Blusk SR, Bocci A, Bodek A, Bokhari W, Bolla G, Bonushkin Y, Bortoletto D, Boudreau J, Brandl A, van den Brink S, Bromberg C, Brozovic M, Brubaker E, Bruner N, Buckley-Geer E, Budagov J, Budd HS, Burkett K, Busetto G, Byon-Wagner A, Byrum KL, Cabrera S, Calafiura P, Campbell M, Carithers W, Carlson J, Carlsmith D, Caskey W, Castro A, Cauz D, Cerri A, Chan AW, Chang PS, Chang PT, Chapman J, Chen C, Chen YC, Cheng MT, Chertok M, Chiarelli G, Chirikov-Zorin I, Chlachidze G, Chlebana F, Christofek L, Chu ML, Chung YS, Ciobanu CI, Clark AG, Connolly A, Conway J, Cordelli M, Cranshaw J, Cropp R, Culbertson R, Dagenhart D, D'Auria S, DeJongh F, Dell'Agnello S, Dell'Orso M, Demortier L, Deninno M, Derwent PF, Devlin T, Dittmann JR, Dominguez A, Donati S, Done J, D'Onofrio M, Dorigo T, Eddy N, Einsweiler K, Elias JE, Engels E, Erbacher R, Errede D, Errede S, Fan Q, Feild RG, Fernandez JP, Ferretti C, Field RD, Fiori I, Flaugher B, Foster GW, Franklin M, Freeman J, Friedman J, Fukui Y, Furic I, Galeotti S, Gallas A, Gallinaro M, Gao T, Garcia-Sciveres M, Garfinkel AF, Gatti P, Gay C, Gerdes DW, Giannetti P, Giromini P, Glagolev V, Glenzinski D, Gold M, Goldstein J, Gorelov I, Goshaw AT, Gotra Y, Goulianos K, Green C, Grim G, Gris P, Groer L, Grosso-Pilcher C, Guenther M, Guillian G, Guimaraes da Costa J, Haas RM, Haber C, Hahn SR, Hall C, Handa T, Handler R, Hao W, Happacher F, Hara K, Hardman AD, Harris RM, Hartmann F, Hatakeyama K, Hauser J, Heinrich J, Heiss A, Herndon M, Hill C, Hoffman KD, Holck C, Hollebeek R, Holloway L, Hughes R, Huston J, Huth J, Ikeda H, Incandela J, Introzzi G, Iwai J, Iwata Y, James E, Jones M, Joshi U, Kambara H, Kamon T, Kaneko T, Karr K, Kasha H, Kato Y, Keaffaber TA, Kelley K, Kelly M, Kennedy RD, Kephart R, Khazins D, Kikuchi T, Kilminster B, Kim BJ, Kim DH, Kim HS, Kim MJ, Kim SB, Kim SH, Kim YK, Kirby M, Kirk M, Kirsch L, Klimenko S, Koehn P, Kondo K, Konigsberg J, Korn A, Korytov A, Kovacs E, Kroll J, Kruse M, Kuhlmann SE, Kurino K, Kuwabara T, Laasanen AT, Lai N, Lami S, Lammel S, Lancaster J, Lancaster M, Lander R, Lath A, Latino G, LeCompte T, Lee AM, Lee K, Lee SW, Leone S, Lewis JD, Lindgren M, Liss TM, Liu JB, Liu YC, Litvintsev DO, Lobban O, Lockyer N, Loken J, Loreti M, Lucchesi D, Lukens P, Lusin S, Lyons L, Lys J, Madrak R, Maeshima K, Maksimovic P, Malferrari L, Mangano M, Mariotti M, Martignon G, Martin A, Matthews JA, Mayer J, Mazzanti P, McFarland KS, McIntyre P, McKigney E, Menguzzato M, Menzione A, Mesropian C, Meyer A, Miao T, Miller R, Miller JS, Minato H, Miscetti S, Mishina M, Mitselmakher G, Moggi N, Moore E, Moore R, Morita Y, Moulik T, Mulhearn M, Mukherjee A, Muller T, Munar A, Murat P, Murgia S, Nachtman J, Nagaslaev V, Nahn S, Nakada H, Nakano I, Nelson C, Nelson T, Neu C, Neuberger D, Newman-Holmes C, Ngan CY, Niu H, Nodulman L, Nomerotski A, Oh SH, Oh YD, Ohmoto T, Ohsugi T, Oishi R, Okusawa T, Olsen J, Orejudos W, Pagliarone C, Palmonari F, Paoletti R, Papadimitriou V, Partos D, Patrick J, Pauletta G, Paulini M, Paus C, Pellett D, Pescara L, Phillips TJ, Piacentino G, Pitts KT, Pompos A, Pondrom L, Pope G, Popovic M, Prokoshin F, Proudfoot J, Ptohos F, Pukhov O, Punzi G, Rakitine A, Ratnikov F, Reher D, Reichold A, Ribon A, Riegler W, Rimondi F, Ristori L, Riveline M, Robertson WJ, Robinson A, Rodrigo T, Rolli S, Rosenson L, Roser R, Rossin R, Roy A, Ruiz A, Safonov A, St Denis R, Sakumoto WK, Saltzberg D, Sanchez C, Sansoni A, Santi L, Sato H, Savard P, Schlabach P, Schmidt EE, Schmidt MP, Schmitt M, Scodellaro L, Scott A, Scribano A, Segler S, Seidel S, Seiya Y, Semenov A, Semeria F, Shah T, Shapiro MD, Shepard PF, Shibayama T, Shimojima M, Shochet M, Sidoti A, Siegrist J, Sill A, Sinervo P, Singh P, Slaughter AJ, Sliwa K, Smith C, Snider FD, Solodsky A, Spalding J, Speer T, Sphicas P, Spinella F, Spiropulu M, Spiegel L, Steele J, Stefanini A, Strologas J, Strumia F, Stuart D, Sumorok K, Suzuki T, Takano T, Takashima R, Takikawa K, Tamburello P, Tanaka M, Tannenbaum B, Tecchio M, Tesarek R, Teng PK, Terashi K, Tether S, Thompson AS, Thurman-Keup R, Tipton P, Tkaczyk S, Toback D, Tollefson K, Tollestrup A, Tonelli D, Toyoda H, Trischuk W, de Troconiz JF, Tseng J, Turini N, Ukegawa F, Vaiciulis T, Valls J, Vejcik S, Velev G, Veramendi G, Vidal R, Vila I, Vilar R, Volobouev I, von der Mey M, Vucinic D, Wagner RG, Wagner RL, Wallace NB, Wan Z, Wang C, Wang MJ, Ward B, Waschke S, Watanabe T, Waters D, Watts T, Webb R, Wenzel H, Wester WC, Wicklund AB, Wicklund E, Wilkes T, Williams HH, Wilson P, Winer BL, Winn D, Wolbers S, Wolinski D, Wolinski J, Wolinski S, Worm S, Wu X, Wyss J, Yao W, Yeh GP, Yeh P, Yoh J, Yosef C, Yoshida T, Yu I, Yu S, Yu Z, Zanetti A, Zetti F, Zucchelli S. Search for gluinos and squarks using like-sign dileptons in pp macro collisions at square root of s = 1.8 TeV. Phys Rev Lett 2001; 87:251803. [PMID: 11736562 DOI: 10.1103/physrevlett.87.251803] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2001] [Indexed: 05/23/2023]
Abstract
We present results of the first search for like-sign dilepton ( e(+/-)e(+/-), e(+/-)mu(+/-), mu(+/-)mu(+/-)) events associated with multijets and large missing energy using 106 pb(-1) of data in pp macro collisions at square root of s = 1.8 TeV collected during 1992-1995 by the CDF experiment. Finding no events that pass our selection, we examine pair production of gluinos (tilde g) and squarks (tilde q) in a constrained framework of the minimal supersymmetric standard model. At tan beta = 2 and mu = -800 GeV/c(2), we set 95% confidence level limits of M(tilde g)>221 GeV/c(2) for M(tilde g) approximately M(tilde q), and M(tilde q)>168 GeV/c(2) for M(tilde q)>>M(tilde g), both with small variation as a function of mu.
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Affiliation(s)
- T Affolder
- Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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Affolder T, Akimoto H, Akopian A, Albrow MG, Amaral P, Amidei D, Anikeev K, Antos J, Apollinari G, Arisawa T, Artikov A, Asakawa T, Ashmanskas W, Azfar F, Azzi-Bacchetta P, Bacchetta N, Bachacou H, Bailey S, de Barbaro P, Barbaro-Galtieri A, Barnes VE, Barnett BA, Baroiant S, Barone M, Bauer G, Bedeschi F, Belforte S, Bell WH, Bellettini G, Bellinger J, Benjamin D, Bensinger J, Beretvas A, Berge JP, Berryhill J, Bhatti A, Binkley M, Bisello D, Bishai M, Blair RE, Blocker C, Bloom K, Blumenfeld B, Blusk SR, Bocci A, Bodek A, Bokhari W, Bolla G, Bonushkin Y, Borras K, Bortoletto D, Boudreau J, Brandl A, van den Brink S, Bromberg C, Brozovic M, Brubaker E, Bruner N, Buckley-Geer E, Budagov J, Budd HS, Burkett K, Busetto G, Byon-Wagner A, Byrum KL, Cabrera S, Calafiura P, Campbell M, Carithers W, Carlson J, Carlsmith D, Caskey W, Castro A, Cauz D, Cerri A, Chan AW, Chang PS, Chang PT, Chapman J, Chen C, Chen YC, Cheng MT, Chertok M, Chiarelli G, Chirikov-Zorin I, Chlachidze G, Chlebana F, Christofek L, Chu ML, Chung YS, Ciobanu CI, Clark AG, Connolly A, Convery ME, Conway J, Cordelli M, Cranshaw J, Cropp R, Culbertson R, Dagenhart D, D'Auria S, DeJongh F, Dell'Agnello S, Dell'Orso M, Demortier L, Deninno M, Derwent PF, Devlin T, Dittmann JR, Dominguez A, Donati S, Done J, D'Onofrio M, Dorigo T, Eddy N, Einsweiler K, Elias JE, Engels E, Erbacher R, Errede D, Errede S, Fan Q, Feild RG, Fernandez JP, Ferretti C, Field RD, Fiori I, Flaugher B, Foster GW, Franklin M, Freeman J, Friedman J, Fukui Y, Furic I, Galeotti S, Gallas A, Gallinaro M, Gao T, Garcia-Sciveres M, Garfinkel AF, Gatti P, Gay C, Gerdes DW, Giannetti P, Glagolev V, Glenzinski D, Gold M, Goldstein J, Gorelov I, Goshaw AT, Gotra Y, Goulianos K, Green C, Grim G, Gris P, Groer L, Grosso-Pilcher C, Guenther M, Guillian G, Guimaraes da Costa J, Haas RM, Haber C, Hahn SR, Hall C, Handa T, Handler R, Hao W, Happacher F, Hara K, Hardman AD, Harris RM, Hartmann F, Hatakeyama K, Hauser J, Heinrich J, Heiss A, Herndon M, Hill C, Hoffman KD, Holck C, Hollebeek R, Holloway L, Hughes R, Huston J, Huth J, Ikeda H, Incandela J, Introzzi G, Iwai J, Iwata Y, James E, Jones M, Joshi U, Kambara H, Kamon T, Kaneko T, Karr K, Kasha H, Kato Y, Keaffaber TA, Kelley K, Kelly M, Kennedy RD, Kephart R, Khazins D, Kikuchi T, Kilminster B, Kim BJ, Kim DH, Kim HS, Kim MJ, Kim SB, Kim SH, Kim YK, Kirby M, Kirk M, Kirsch L, Klimenko S, Koehn P, Kondo K, Konigsberg J, Korn A, Korytov A, Kovacs E, Kroll J, Kruse M, Kuhlmann SE, Kurino K, Kuwabara T, Laasanen AT, Lai N, Lami S, Lammel S, Lancaster J, Lancaster M, Lander R, Lath A, Latino G, LeCompte T, Lee AM, Lee K, Leone S, Lewis JD, Lindgren M, Liss TM, Liu JB, Liu YC, Litvintsev DO, Lobban O, Lockyer N, Loken J, Loreti M, Lucchesi D, Lukens P, Lusin S, Lyons L, Lys J, Madrak R, Maeshima K, Maksimovic P, Malferrari L, Mangano M, Mariotti M, Martignon G, Martin A, Matthews JA, Mayer J, Mazzanti P, McFarland KS, McIntyre P, McKigney E, Menguzzato M, Menzione A, Mesropian C, Meyer A, Miao T, Miller R, Miller JS, Minato H, Miscetti S, Mishina M, Mitselmakher G, Moggi N, Moore E, Moore R, Morita Y, Moulik T, Mulhearn M, Mukherjee A, Muller T, Munar A, Murat P, Murgia S, Nachtman J, Nagaslaev V, Nahn S, Nakada H, Nakano I, Nelson C, Nelson T, Neu C, Neuberger D, Newman-Holmes C, Ngan CY, Niu H, Nodulman L, Nomerotski A, Oh SH, Oh YD, Ohmoto T, Ohsugi T, Oishi R, Okusawa T, Olsen J, Orejudos W, Pagliarone C, Palmonari F, Paoletti R, Papadimitriou V, Partos D, Patrick J, Pauletta G, Paulini M, Paus C, Pellett D, Pescara L, Phillips TJ, Piacentino G, Pitts KT, Pompos A, Pondrom L, Pope G, Popovic M, Prokoshin F, Proudfoot J, Ptohos F, Pukhov O, Punzi G, Rakitine A, Ratnikov F, Reher D, Reichold A, Ribon A, Riegler W, Rimondi F, Ristori L, Riveline M, Robertson WJ, Robinson A, Rodrigo T, Rolli S, Rosenson L, Roser R, Rossin R, Roy A, Ruiz A, Safonov A, Denis RS, Sakumoto WK, Saltzberg D, Sanchez C, Sansoni A, Santi L, Sato H, Savard P, Schlabach P, Schmidt EE, Schmidt MP, Schmitt M, Scodellaro L, Scott A, Scribano A, Segler S, Seidel S, Seiya Y, Semenov A, Semeria F, Shah T, Shapiro MD, Shepard PF, Shibayama T, Shimojima M, Shochet M, Sidoti A, Siegrist J, Sill A, Sinervo P, Singh P, Slaughter AJ, Sliwa K, Smith C, Snider FD, Solodsky A, Spalding J, Speer T, Sphicas P, Spinella F, Spiropulu M, Spiegel L, Steele J, Stefanini A, Strologas J, Strumia F, Stuart D, Sumorok K, Suzuki T, Takano T, Takashima R, Takikawa K, Tamburello P, Tanaka M, Tannenbaum B, Tecchio M, Tesarek R, Teng PK, Terashi K, Tether S, Thompson AS, Thurman-Keup R, Tipton P, Tkaczyk S, Toback D, Tollefson K, Tollestrup A, Tonelli D, Toyoda H, Trischuk W, de Troconiz JF, Tseng J, Turini N, Ukegawa F, Vaiciulis T, Valls J, Vejcik S, Velev G, Veramendi G, Vidal R, Vila I, Vilar R, Volobouev I, von der Mey M, Vucinic D, Wagner RG, Wagner RL, Wallace NB, Wan Z, Wang C, Wang MJ, Ward B, Waschke S, Watanabe T, Waters D, Watts T, Webb R, Wenzel H, Wester WC, Wicklund AB, Wicklund E, Wilkes T, Williams HH, Wilson P, Winer BL, Winn D, Wolbers S, Wolinski D, Wolinski J, Wolinski S, Worm S, Wu X, Wyss J, Yao W, Yeh GP, Yeh P, Yoh J, Yosef C, Yoshida T, Yu I, Yu S, Yu Z, Zanetti A, Zetti F, Zucchelli S. Observation of diffractive J/psi production at the Fermilab Tevatron. Phys Rev Lett 2001; 87:241802. [PMID: 11736493 DOI: 10.1103/physrevlett.87.241802] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2001] [Indexed: 05/23/2023]
Abstract
We report the first observation of diffractive J/psi(--> mu+mu-) production in pp collisions at root square[s] = 1.8 TeV. Diffractive events are identified by their rapidity gap signature. In a sample of events with two muons of transverse momentum p(mu)T>2 GeV/c within the pseudorapidity region /eta/ < 1.0, the ratio of diffractive to total J/psi production rates is found to be R(J/psi) = [1.45 +/- 0.25]%. The ratio R(J/psi)(x) is presented as a function of x-Bjorken. By combining it with our previously measured corresponding ratio R(jj)(x) for diffractive dijet production, we extract a value of 0.59 +/- 0.15 for the gluon fraction of the diffractive structure function of the proton.
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Affiliation(s)
- T Affolder
- Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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Affolder T, Akimoto H, Akopian A, Albrow MG, Amaral P, Amidei D, Anikeev K, Antos J, Apollinari G, Arisawa T, Artikov A, Asakawa T, Ashmanskas W, Azfar F, Azzi-Bacchetta P, Bacchetta N, Bachacou H, Bailey S, de Barbaro P, Barbaro-Galtieri A, Barnes VE, Barnett BA, Baroiant S, Barone M, Bauer G, Bedeschi F, Belforte S, Bell WH, Bellettini G, Bellinger J, Benjamin D, Bensinger J, Beretvas A, Berge JP, Berryhill J, Bhatti A, Binkley M, Bisello D, Bishai M, Blair RE, Blocker C, Bloom K, Blumenfeld B, Blusk SR, Bocci A, Bodek A, Bokhari W, Bolla G, Bonushkin Y, Bortoletto D, Boudreau J, Brandl A, van den Brink S, Bromberg C, Brozovic M, Brubaker E, Bruner N, Buckley-Geer E, Budagov J, Budd HS, Burkett K, Busetto G, Byon-Wagner A, Byrum KL, Cabrera S, Calafiura P, Campbell M, Carithers W, Carlson J, Carlsmith D, Caskey W, Castro A, Cauz D, Cerri A, Chan AW, Chang PS, Chang PT, Chapman J, Chen C, Chen YC, Cheng MT, Chertok M, Chiarelli G, Chirikov-Zorin I, Chlachidze G, Chlebana F, Christofek L, Chu ML, Chung YS, Ciobanu CI, Clark AG, Connolly A, Conway J, Cordelli M, Cranshaw J, Cropp R, Culbertson R, Dagenhart D, D'Auria S, DeJongh F, Dell'Agnello S, Dell'Orso M, Demortier L, Deninno M, Derwent PF, Devlin T, Dittmann JR, Dominguez A, Donati S, Done J, D'Onofrio M, Dorigo T, Eddy N, Einsweiler K, Elias JE, Engels E, Erbacher R, Errede D, Errede S, Fan Q, Feild RG, Fernandez JP, Ferretti C, Field RD, Fiori I, Flaugher B, Foster GW, Franklin M, Freeman J, Friedman J, Fukui Y, Furic I, Galeotti S, Gallas A, Gallinaro M, Gao T, Garcia-Sciveres M, Garfinkel AF, Gatti P, Gay C, Gerdes DW, Giannetti P, Giromini P, Glagolev V, Glenzinski D, Gold M, Goldstein J, Gorelov I, Goshaw AT, Gotra Y, Goulianos K, Green C, Grim G, Gris P, Groer L, Grosso-Pilcher C, Guenther M, Guillian G, Guimaraes da Costa J, Haas RM, Haber C, Hahn SR, Hall C, Handa T, Handler R, Hao W, Happacher F, Hara K, Hardman AD, Harris RM, Hartmann F, Hatakeyama K, Hauser J, Heinrich J, Heiss A, Herndon M, Hill C, Hoffman KD, Holck C, Hollebeek R, Holloway L, Hughes R, Huston J, Huth J, Ikeda H, Incandela J, Introzzi G, Iwai J, Iwata Y, James E, Jones M, Joshi U, Kambara H, Kamon T, Kaneko T, Karr K, Kasha H, Kato Y, Keaffaber TA, Kelley K, Kelly M, Kennedy RD, Kephart R, Khazins D, Kikuchi T, Kilminster B, Kim BJ, Kim DH, Kim HS, Kim MJ, Kim SB, Kim SH, Kim YK, Kirby M, Kirk M, Kirsch L, Klimenko S, Koehn P, Kondo K, Konigsberg J, Korn A, Korytov A, Kotwal AV, Kovacs E, Kroll J, Kruse M, Kuhlmann SE, Kurino K, Kuwabara T, Laasanen AT, Lai N, Lami S, Lammel S, Lancaster J, Lancaster M, Lander R, Lath A, Latino G, LeCompte T, Lee AM, Lee K, Leone S, Lewis JD, Lindgren M, Liss TM, Liu JB, Liu YC, Litvintsev DO, Lobban O, Lockyer N, Loken J, Loreti M, Lucchesi D, Lukens P, Lusin S, Lyons L, Lys J, Madrak R, Maeshima K, Maksimovic P, Malferrari L, Mangano M, Mariotti M, Martignon G, Martin A, Matthews JA, Mayer J, Mazzanti P, McFarland KS, McIntyre P, McKigney E, Menguzzato M, Menzione A, Mesropian C, Meyer A, Miao T, Miller R, Miller JS, Minato H, Miscetti S, Mishina M, Mitselmakher G, Moggi N, Moore E, Moore R, Morita Y, Moulik T, Mulhearn M, Mukherjee A, Muller T, Munar A, Murat P, Murgia S, Nachtman J, Nagaslaev V, Nahn S, Nakada H, Nakano I, Nelson C, Nelson T, Neu C, Neuberger D, Newman-Holmes C, Ngan CY, Niu H, Nodulman L, Nomerotski A, Oh SH, Oh YD, Ohmoto T, Ohsugi T, Oishi R, Okusawa T, Olsen J, Orejudos W, Pagliarone C, Palmonari F, Paoletti R, Papadimitriou V, Partos D, Patrick J, Pauletta G, Paulini M, Paus C, Pellett D, Pescara L, Phillips TJ, Piacentino G, Pitts KT, Pompos A, Pondrom L, Pope G, Popovic M, Prokoshin F, Proudfoot J, Ptohos F, Pukhov O, Punzi G, Rakitine A, Ratnikov F, Reher D, Reichold A, Ribon A, Riegler W, Rimondi F, Ristori L, Riveline M, Robertson WJ, Robinson A, Rodrigo T, Rolli S, Rosenson L, Roser R, Rossin R, Rott C, Roy A, Ruiz A, Safonov A, St Denis R, Sakumoto WK, Saltzberg D, Sanchez C, Sansoni A, Santi L, Sato H, Savard P, Schlabach P, Schmidt EE, Schmidt MP, Schmitt M, Scodellaro L, Scott A, Scribano A, Segler S, Seidel S, Seiya Y, Semenov A, Semeria F, Shah T, Shapiro MD, Shepard PF, Shibayama T, Shimojima M, Shochet M, Sidoti A, Siegrist J, Sill A, Sinervo P, Singh P, Slaughter AJ, Sliwa K, Smith C, Snider FD, Solodsky A, Spalding J, Speer T, Sphicas P, Spinella F, Spiropulu M, Spiegel L, Steele J, Stefanini A, Strologas J, Strumia F, Stuart D, Sumorok K, Suzuki T, Takano T, Takashima R, Takikawa K, Tamburello P, Tanaka M, Tannenbaum B, Tecchio M, Tesarek R, Teng PK, Terashi K, Tether S, Thompson AS, Thurman-Keup R, Tipton P, Tkaczyk S, Toback D, Tollefson K, Tollestrup A, Tonelli D, Toyoda H, Trischuk W, de Troconiz JF, Tseng J, Turini N, Ukegawa F, Vaiciulis T, Valls J, Vejcik S, Velev G, Veramendi G, Vidal R, Vila I, Vilar R, Volobouev I, von der Mey M, Vucinic D, Wagner RG, Wagner RL, Wallace NB, Wan Z, Wang C, Wang MJ, Ward B, Waschke S, Watanabe T, Waters D, Watts T, Webb R, Wenzel H, Wester WC, Wicklund AB, Wicklund E, Wilkes T, Williams HH, Wilson P, Winer BL, Winn D, Wolbers S, Wolinski D, Wolinski J, Wolinski S, Worm S, Wu X, Wyss J, Yao W, Yeh GP, Yeh P, Yoh J, Yosef C, Yoshida T, Yu I, Yu S, Yu Z, Zanetti A, Zetti F, Zucchelli S. Search for quark-lepton compositeness and a heavy W' Boson using the enu channel in p p macro collisions at square root of [s] = 1.8 TeV. Phys Rev Lett 2001; 87:231803. [PMID: 11736446 DOI: 10.1103/physrevlett.87.231803] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2001] [Indexed: 05/23/2023]
Abstract
We present searches for quark-lepton compositeness and a heavy W' boson at high electron-neutrino transverse mass. We use approximately 110 pb(-1) of data collected in p p macro collisions at square root of [s] = 1.8 TeV by the CDF Collaboration during 1992-1995. The data are consistent with standard model expectations. Limits are set on the quark-lepton compositeness scale Lambda, the ratio of partial cross sections sigma(W'-->enu)/sigma(W-->enu), and the mass of a W' boson with standard model couplings. We exclude Lambda<2.81 TeV and a W' boson with mass below 754 GeV/c(2) at the 95% confidence level. Combining with our previously published limit obtained using the muon channel, we exclude a W' boson with mass below 786 GeV/c(2) at the 95% confidence level.
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Affiliation(s)
- T Affolder
- Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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Linnan LA, Kim AE, Wasilewski Y, Lee AM, Yang J, Solomon F. Working with licensed cosmetologists to promote health: results from the North Carolina BEAUTY and Health Pilot Study. Prev Med 2001; 33:606-12. [PMID: 11716657 DOI: 10.1006/pmed.2001.0933] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
BACKGROUND Beauty salons are located in all communities and represent a promising channel for delivering health promotion programs. No previous salon-based health promotion program has assessed the needs, interests, and preferences of licensed cosmetologists about sharing health information with their clients. METHODS Licensed cosmetologists in one town completed a mailed survey assessing (1) health topics typically discussed with clients, (2) interest in delivering messages about beauty and health, and (3) preferred methods for learning about and sharing health information with their clients. RESULTS The average cosmetologist sees 47 clients per week and spends 30-60 min per appointment. Eighty-two percent report that they are interested in talking about health with their clients. Most cosmetologists already discuss a wide range of health topics with their clients and are most comfortable discussing healthy eating (65.3%), physical activity (63.3%), and dieting (63.3%). Cosmetologists preferred reading pamphlets (55.1%) and watching educational videos (46.9%) to learn about beauty and health. Distributing pamphlets (69.4%), talking with clients (61.2%), and placing posters/mirror stickers in the salons (59.2%) were the methods cosmetologists most preferred for sharing health information with their clients. CONCLUSIONS Licensed cosmetologists are in a unique position to serve as "natural helpers" by delivering health messages to their clients and reinforcing those messages over time. Partnerships with licensed cosmetologists should be developed to deliver salon-based health promotion programs.
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Affiliation(s)
- L A Linnan
- Department of Health Behavior and Health Education, School of Public Health, University of North Carolina School of Public Health, Chapel Hill, NC 27599-7440, USA.
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Affolder T, Akimoto H, Akopian A, Albrow MG, Amaral P, Amidei D, Anikeev K, Antos J, Apollinari G, Arisawa T, Artikov A, Asakawa T, Ashmanskas W, Azfar F, Azzi-Bacchetta P, Bacchetta N, Bachacou H, Bailey S, de Barbaro P, Barbaro-Galtieri A, Barnes VE, Barnett BA, Baroiant S, Barone M, Bauer G, Bedeschi F, Belforte S, Bell WH, Bellettini G, Bellinger J, Benjamin D, Bensinger J, Beretvas A, Berge JP, Berryhill J, Bhatti A, Binkley M, Bisello D, Bishai M, Blair RE, Blocker C, Bloom K, Blumenfeld B, Blusk SR, Bocci A, Bodek A, Bokhari W, Bolla G, Bonushkin Y, Bortoletto D, Boudreau J, Brandl A, van Brink S, Bromberg C, Brozovic M, Brubaker E, Bruner N, Buckley-Geer E, Budagov J, Budd HS, Burkett K, Busetto G, Byon-Wagner A, Byrum KL, Cabrera S, Calafiura P, Campbell M, Carithers W, Carlson J, Carlsmith D, Caskey W, Castro A, Cauz D, Cerri A, Chan AW, Chang PS, Chang PT, Chapman J, Chen C, Chen YC, Cheng MT, Chertok M, Chiarelli G, Chirikov-Zorin I, Chlachidze G, Chlebana F, Christofek L, Chu ML, Chung YS, Ciobanu CI, Clark AG, Connolly A, Conway J, Cordelli M, Cranshaw J, Cropp R, Culbertson R, Dagenhart D, D'Auria S, DeJongh F, Dell'Agnello S, Dell'Orso M, Demortier L, Deninno M, Derwent PF, Devlin T, Dittmann JR, Dominguez A, Donati S, Done J, D'Onofrio M, Dorigo T, Eddy N, Einsweiler K, Elias JE, Engels E, Erbacher R, Errede D, Errede S, Fan Q, Feild RG, Fernandez JP, Ferretti C, Field RD, Fiori I, Flaugher B, Foster GW, Franklin M, Freeman J, Friedman J, Fukui Y, Furic I, Galeotti S, Gallas A, Gallinaro M, Gao T, Garcia-Sciveres M, Garfinkel AF, Gatti P, Gay C, Gerdes DW, Giannetti P, Giromini P, Glagolev V, Glenzinski D, Gold M, Goldstein J, Gorelov I, Goshaw AT, Gotra Y, Goulianos K, Green C, Grim G, Gris P, Groer L, Grosso-Pilcher C, Guenther M, Guillian G, Guimaraes De Costa J, Haas RM, Haber C, Hahn SR, Hall C, Handa T, Handler R, Hao W, Happacher F, Hara K, Hardman AD, Harris RM, Hartmann F, Hatakeyama K, Hauser J, Heinrich J, Heiss A, Herndon M, Hill C, Hoffman KD, Holck C, Hollebeek R, Holloway L, Hughes R, Huston J, Huth J, Ikeda H, Incandela J, Introzzi G, Iwai J, Iwata Y, James E, Jones M, Joshi U, Kambara H, Kamon T, Kaneko T, Karr K, Kasha H, Kato Y, Keaffaber TA, Kelley K, Kelly M, Kennedy RD, Kephart R, Khazins D, Kikuchi T, Kilminster B, Kim BJ, Kim DH, Kim HS, Kim MJ, Kim SB, Kim SH, Kim YK, Kirby M, Kirk M, Kirsch L, Klimenko S, Koehn P, Kondo K, Konigsberg J, Korn A, Korytov A, Kovacs E, Kroll J, Kruse M, Kuhlmann SE, Kurino K, Kuwabara T, Laasanen AT, Lai N, Lami S, Lammel S, Lancaster J, Lancaster M, Lander R, Lath A, Latino G, LeCompte T, Lee AM, Lee K, Leone S, Lewis JD, Lindgren M, Liss TM, Liu JB, Liu YC, Litvintsev DO, Lobban O, Lockyer N, Loken J, Loreti M, Lucchesi D, Lukens P, Lusin S, Lyons L, Lys J, Madrak R, Maeshima K, Maksimovic P, Malferrari L, Mangano M, Mariotti M, Martignon G, Martin A, Matthews JA, Mayer J, Mazzanti P, McFarland KS, McIntyre P, McKigney E, Menguzzato M, Menzione A, Mesropian C, Meyer A, Miao T, Miller R, Miller JS, Minato H, Miscetti S, Mishina M, Mitselmakher G, Moggi N, Moore E, Moore R, Morita Y, Moulik T, Mulhearn M, Mukherjee A, Muller T, Munar A, Murat P, Murgia S, Nachtman J, Nagaslaev V, Nahn S, Nakada H, Nakano I, Nelson C, Nelson T, Neu C, Neuberger D, Newman-Holmes C, Ngan CY, Niu H, Nodulman L, Nomerotski A, Oh SH, Oh YD, Ohmoto T, Ohsugi T, Oishi R, Okusawa T, Olsen J, Orejudos W, Pagliarone C, Palmonari F, Paoletti R, Papadimitriou V, Partos D, Patrick J, Pauletta G, Paulini M, Paus C, Pescara L, Phillips TJ, Piacentino G, Pitts KT, Plunkett R, Pompos A, Pondrom L, Pope G, Popovic M, Prokoshin F, Proudfoot J, Ptohos F, Pukhov O, Punzi G, Rakitine A, Ratnikov F, Reher D, Reichold A, Ribon A, Riegler W, Rimondi F, Ristori L, Riveline M, Robertson WJ, Robinson A, Rodrigo T, Rolli S, Rosenson L, Roser R, Rossin R, Roy A, Ruiz A, Safonov A, St Denis R, Sakumoto WK, Saltzberg D, Sanchez C, Sansoni A, Santi L, Sato H, Savard P, Schlabach P, Schmidt EE, Schmidt MP, Schmitt M, Scodellaro L, Scott A, Scribano A, Segler S, Seidel S, Seiya Y, Semenov A, Semeria F, Shah T, Shapiro MD, Shepard PF, Shibayama T, Shimojima M, Shochet M, Sidoti A, Siegrist J, Sill A, Sinervo P, Singh P, Slaughter AJ, Sliwa K, Smith C, Snider FD, Solodsky A, Spalding J, Speer T, Sphicas P, Spinella F, Spiropulu M, Spiegel L, Steele J, Stefanini A, Strologas J, Strumia F, Stuart D, Sumorok K, Suzuki T, Takano T, Takashima R, Takikawa K, Tamburello P, Tanaka M, Tannenbaum B, Tecchio M, Tesarek R, Teng PK, Terashi K, Tether S, Thompson AS, Thurman-Keup R, Tipton P, Tkaczyk S, Toback D, Tollefson K, Tollestrup A, Tonelli D, Toyoda H, Trischuk W, de Troconiz JF, Tseng J, Turini N, Ukegawa F, Vaiciulis T, Valls J, Vejcik S, Velev G, Veramendi G, Vidal R, Vila I, Vilar R, Volobouev I, von Der Mey M, Vucinic D, Wagner RG, Wagner RL, Wallace NB, Wan Z, Wang C, Wang MJ, Ward B, Waschke S, Watanabe T, Waters D, Watts T, Webb R, Wenzel H, Wester WC, Wicklund AB, Wicklund E, Wilkes T, Williams HH, Wilson P, Winer BL, Winn D, Wolbers S, Wolinski D, Wolinski J, Wolinski S, Worm S, Wu X, Wyss J, Yao W, Yeh GP, Yeh P, Yoh J, Yosef C, Yoshida T, Yu I, Yu S, Yu Z, Zanetti A, Zetti F, Zucchelli S. Charged-particle multiplicity pp collisions at square root of (s) = 1.8 TeV. Phys Rev Lett 2001; 87:211804. [PMID: 11736333 DOI: 10.1103/physrevlett.87.211804] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
We report on a measurement of the mean charged-particle multiplicity of jets in dijet events with dijet masses in the range 80-630 GeV/c(2), produced at the Tevatron in pp collisions with square root (s) = 1.8 TeV and recorded by the Collider Detector at Fermilab. The data are fit to perturbative-QCD calculations carried out in the framework of the modified leading log approximation and the hypothesis of local parton-hadron duality. The fit yields values for two parameters in that framework: the ratio of parton multiplicities in gluon and quark jets, r identical withN(g-jet)(partons)/N(q-jet)(partons) = 1.7+/-0.3, and the ratio of the number of charged hadrons to the number of partons in a jet, K(charged)(LPHD) identical with N(charged)(hadrons)/N(partons) = 0.57+/-0.11.
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Affiliation(s)
- T Affolder
- Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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Affolder T, Akimoto H, Akopian A, Albrow MG, Amaral P, Amidei D, Anikeev K, Antos J, Apollinari G, Arisawa T, Asakawa T, Ashmanskas W, Azfar F, Azzi-Bacchetta P, Bacchetta N, Bailey MW, Bailey S, de Barbaro P, Barbaro-Galtieri A, Barnes VE, Barnett BA, Baroiant S, Barone M, Bauer G, Bedeschi F, Belforte S, Bell WH, Bellettini G, Bellinger J, Benjamin D, Bensinger J, Beretvas A, Berge JP, Berryhill J, Bhatti A, Binkley M, Bisello D, Bishai M, Blair RE, Blocker C, Bloom K, Blumenfeld B, Blusk SR, Bocci A, Bodek A, Bokhari W, Bolla G, Bonushkin Y, Borras K, Bortoletto D, Boudreau J, Brandl A, van Den Brink S, Bromberg C, Brozovic M, Bruner N, Buckley-Geer E, Budagov J, Budd HS, Burkett K, Busetto G, Byon-Wagner A, Byrum KL, Cabrera S, Calafiura P, Campbell M, Carithers W, Carlson J, Carlsmith D, Caskey W, Castro A, Cauz D, Cerri A, Chan AW, Chang PS, Chang PT, Chapman J, Chen C, Chen YC, Cheng MT, Chertok M, Chiarelli G, Chirikov-Zorin I, Chlachidze G, Chlebana F, Christofek L, Chu ML, Chung YS, Ciobanu CI, Clark AG, Connolly A, Convery M, Conway J, Cordelli M, Cranshaw J, Cropp R, Culbertson R, Dagenhart D, D'Auria S, DeJongh F, Dell'Agnello S, Dell'Orso M, Demortier L, Deninno M, Derwent PF, Devlin T, Dittmann JR, Dominguez A, Donati S, Done J, D'Onofrio M, Dorigo T, Eddy N, Einsweiler K, Elias JE, Engels E, Erbacher R, Errede D, Errede S, Fan Q, Feild RG, Fernandez JP, Ferretti C, Field RD, Fiori I, Flaugher B, Foster GW, Franklin M, Freeman J, Friedman J, Fukui Y, Furic I, Galeotti S, Gallas A, Gallinaro M, Gao T, Garcia-Sciveres M, Garfinkel AF, Gatti P, Gay C, Gerdes DW, Giannetti P, Glagolev V, Glenzinski D, Gold M, Goldstein J, Gorelov I, Goshaw AT, Gotra Y, Goulianos K, Green C, Grim G, Gris P, Groer L, Grosso-Pilcher C, Guenther M, Guillian G, Guimaraes Da Costa J, Haas RM, Haber C, Hahn SR, Hall C, Handa T, Handler R, Hao W, Happacher F, Hara K, Hardman AD, Harris RM, Hartmann F, Hatakeyama K, Hauser J, Heinrich J, Heiss A, Herndon M, Hill C, Hoffman KD, Holck C, Hollebeek R, Holloway L, Hughes R, Huston J, Huth J, Ikeda H, Incandela J, Introzzi G, Iwai J, Iwata Y, James E, Jones M, Joshi U, Kambara H, Kamon T, Kaneko T, Karr K, Kasha H, Kato Y, Keaffaber TA, Kelley K, Kelly M, Kennedy RD, Kephart R, Khazins D, Kikuchi T, Kilminster B, Kim BJ, Kim DH, Kim HS, Kim MJ, Kim SB, Kim SH, Kim YK, Kirby M, Kirk M, Kirsch L, Klimenko S, Koehn P, Kondo K, Konigsberg J, Korn A, Korytov A, Kovacs E, Kroll J, Kruse M, Kuhlmann SE, Kurino K, Kuwabara T, Laasanen AT, Lai N, Lami S, Lammel S, Lancaster J, Lancaster M, Lander R, Latino G, LeCompte T, Lee AM, Lee K, Leone S, Lewis JD, Lindgren M, Liss TM, Liu JB, Liu YC, Litvintsev DO, Lobban O, Lockyer N, Loken J, Loreti M, Lucchesi D, Lukens P, Lusin S, Lyons L, Lys J, Madrak R, Maeshima K, Maksimovic P, Malferrari L, Mangano M, Mariotti M, Martignon G, Martin A, Matthews JA, Mayer J, Mazzanti P, McFarland KS, McIntyre P, McKigney E, Menguzzato M, Menzione A, Mesropian C, Meyer A, Miao T, Miller R, Miller JS, Minato H, Miscetti S, Mishina M, Mitselmakher G, Moggi N, Moore E, Moore R, Morita Y, Moulik T, Mulhearn M, Mukherjee A, Muller T, Munar A, Murat P, Murgia S, Nachtman J, Nagaslaev V, Nahn S, Nakada H, Nakano I, Nelson C, Nelson T, Neu C, Neuberger D, Newman-Holmes C, Ngan CY, Niu H, Nodulman L, Nomerotski A, Oh SH, Oh YD, Ohmoto T, Ohsugi T, Oishi R, Okusawa T, Olsen J, Orejudos W, Pagliarone C, Palmonari F, Paoletti R, Papadimitriou V, Partos D, Patrick J, Pauletta G, Paulini M, Paus C, Pescara L, Phillips TJ, Piacentino G, Pitts KT, Pompos A, Pondrom L, Pope G, Popovic M, Prokoshin F, Proudfoot J, Ptohos F, Pukhov O, Punzi G, Rakitine A, Reher D, Reichold A, Ribon A, Riegler W, Rimondi F, Ristori L, Riveline M, Robertson WJ, Robinson A, Rodrigo T, Rolli S, Rosenson L, Roser R, Rossin R, Roy A, Ruiz A, Safonov A, St Denis R, Sakumoto WK, Saltzberg D, Sanchez C, Sansoni A, Santi L, Sato H, Savard P, Schlabach P, Schmidt EE, Schmidt MP, Schmitt M, Scodellaro L, Scott A, Scribano A, Segler S, Seidel S, Seiya Y, Semenov A, Semeria F, Shah T, Shapiro MD, Shepard PF, Shibayama T, Shimojima M, Shochet M, Sidoti A, Siegrist J, Sill A, Sinervo P, Singh P, Slaughter AJ, Sliwa K, Smith C, Snider FD, Solodsky A, Spalding J, Speer T, Sphicas P, Spinella F, Spiropulu M, Spiegel L, Steele J, Stefanini A, Strologas J, Strumia F, Stuart D, Sumorok K, Suzuki T, Takano T, Takashima R, Takikawa K, Tamburello P, Tanaka M, Tannenbaum B, Tecchio M, Tesarek R, Teng PK, Terashi K, Tether S, Thompson AS, Thurman-Keup R, Tipton P, Tkaczyk S, Toback D, Tollefson K, Tollestrup A, Tonelli D, Toyoda H, Trischuk W, de Troconiz JF, Tseng J, Turini N, Ukegawa F, Vaiciulis T, Valls J, Vejcik S, Velev G, Vidal R, Vila I, Vilar R, Volobouev I, Vucinic D, Wagner RG, Wagner RL, Wallace NB, Wang C, Wang MJ, Ward B, Waschke S, Watanabe T, Waters D, Watts T, Webb R, Wenzel H, Wester WC, Wicklund AB, Wicklund E, Wilkes T, Williams HH, Wilson P, Winer BL, Winn D, Wolbers S, Wolinski D, Wolinski J, Wolinski S, Worm S, Wu X, Wyss J, Yagil A, Yao W, Yeh GP, Yeh P, Yoh J, Yosef C, Yoshida T, Yu I, Yu S, Yu Z, Zanetti A, Zetti F, Zucchelli S. Double diffraction dissociation at the Fermilab Tevatron collider. Phys Rev Lett 2001; 87:141802. [PMID: 11580642 DOI: 10.1103/physrevlett.87.141802] [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] [Received: 04/23/2001] [Indexed: 05/23/2023]
Abstract
We present results from a measurement of double diffraction dissociation in pp collisions at the Fermilab Tevatron collider. The production cross section for events with a central pseudorapidity gap of width Deltaeta(0)>3 (overlapping eta = 0) is found to be 4.43+/-0.02(stat)+/-1.18(syst) mb [ 3.42+/-0.01(stat)+/-1.09(syst) mb] at square root of (s) = 1800[630] GeV. Our results are compared with previous measurements and with predictions based on Regge theory and factorization.
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Affiliation(s)
- T Affolder
- Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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Affolder T, Akimoto H, Akopian A, Albrow MG, Amaral P, Amidei D, Anikeev K, Antos J, Apollinari G, Arisawa T, Artikov A, Asakawa T, Ashmanskas W, Azfar F, Azzi-Bacchetta P, Bacchetta N, Bachacou H, Bailey S, de Barbaro P, Barbaro-Galtieri A, Barnes VE, Barnett BA, Baroiant S, Barone M, Bauer G, Bedeschi F, Belforte S, Bell WH, Bellettini G, Bellinger J, Benjamin D, Bensinger J, Beretvas A, Berge JP, Berryhill J, Bhatti A, Binkley M, Bisello D, Bishai M, Blair RE, Blocker C, Bloom K, Blumenfeld B, Blusk SR, Bocci A, Bodek A, Bokhari W, Bolla G, Bonushkin Y, Bortoletto D, Boudreau J, Brandl A, van den Brink S, Bromberg C, Brozovic M, Brubaker E, Bruner N, Buckley-Geer E, Budagov J, Budd HS, Burkett K, Busetto G, Byon-Wagner A, Byrum KL, Cabrera S, Calafiura P, Campbell M, Carithers W, Carlson J, Carlsmith D, Caskey W, Castro A, Cauz D, Cerri A, Chan AW, Chang PS, Chang PT, Chapman J, Chen C, Chen YC, Cheng MT, Chertok M, Chiarelli G, Chirikov-Zorin I, Chlachidze G, Chlebana F, Christofek L, Chu ML, Chung YS, Ciobanu CI, Clark AG, Connolly A, Conway J, Cordelli M, Cranshaw J, Cropp R, Culbertson R, Dagenhart D, D'Auria S, DeJongh F, Dell'Agnello S, Dell'Orso M, Demortier L, Deninno M, Derwent PF, Devlin T, Dittmann JR, Dominguez A, Donati S, Done J, D'Onofrio M, Dorigo T, Eddy N, Einsweiler K, Elias JE, Engels E, Erbacher R, Errede D, Errede S, Fan Q, Feild RG, Fernandez JP, Ferretti C, Field RD, Fiori I, Flaugher B, Foster GW, Franklin M, Freeman J, Friedman J, Fukui Y, Furic I, Galeotti S, Gallas A, Gallinaro M, Gao T, Garcia-Sciveres M, Garfinkel AF, Gatti P, Gay C, Gerdes DW, Giannetti P, Giromini P, Glagolev V, Glenzinski D, Gold M, Goldstein J, Gorelov I, Goshaw AT, Gotra Y, Goulianos K, Green C, Grim G, Gris P, Groer L, Grosso-Pilcher C, Guenther M, Guillian G, Guimaraes da Costa J, Haas RM, Haber C, Hahn SR, Hall C, Handa T, Handler R, Hao W, Happacher F, Hara K, Hardman AD, Harris RM, Hartmann F, Hatakeyama K, Hauser J, Heinrich J, Heiss A, Herndon M, Hill C, Hoffman KD, Holck C, Hollebeek R, Holloway L, Hughes R, Huston J, Huth J, Ikeda H, Incandela J, Introzzi G, Iwai J, Iwata Y, James E, Jones M, Joshi U, Kambara H, Kamon T, Kaneko T, Karr K, Kasha H, Kato Y, Keaffaber TA, Kelley K, Kelly M, Kennedy RD, Kephart R, Khazins D, Kikuchi T, Kilminster B, Kim BJ, Kim DH, Kim HS, Kim MJ, Kim SB, Kim SH, Kim YK, Kirby M, Kirk M, Kirsch L, Klimenko S, Koehn P, Kondo K, Konigsberg J, Korn A, Korytov A, Kovacs E, Kroll J, Kruse M, Kuhlmann SE, Kurino K, Kuwabara T, Laasanen AT, Lai N, Lami S, Lammel S, Lancaster J, Lancaster M, Lander R, Lath A, Latino G, LeCompte T, Lee AM, Lee K, Leone S, Lewis JD, Lindgren M, Liss TM, Liu JB, Liu YC, Litvintsev DO, Lobban O, Lockyer N, Loken J, Loreti M, Lucchesi D, Lukens P, Lusin S, Lyons L, Lys J, Madrak R, Maeshima K, Maksimovic P, Malferrari L, Mangano M, Mariotti M, Martignon G, Martin A, Matthews JA, Mayer J, Mazzanti P, McFarland KS, McIntyre P, McKigney E, Menguzzato M, Menzione A, Mesropian C, Meyer A, Miao T, Miller R, Miller JS, Minato H, Miscetti S, Mishina M, Mitselmakher G, Moggi N, Moore E, Moore R, Morita Y, Moulik T, Mulhearn M, Mukherjee A, Muller T, Munar A, Murat P, Murgia S, Nachtman J, Nagaslaev V, Nahn S, Nakada H, Nakano I, Nelson C, Nelson T, Neu C, Neuberger D, Newman-Holmes C, Ngan CY, Niu H, Nodulman L, Nomerotski A, Oh SH, Oh YD, Ohmoto T, Ohsugi T, Oishi R, Okusawa T, Olsen J, Orejudos W, Pagliarone C, Palmonari F, Paoletti R, Papadimitriou V, Partos D, Patrick J, Pauletta G, Paulini M, Paus C, Pellett D, Pescara L, Phillips TJ, Piacentino G, Pitts KT, Pompos A, Pondrom L, Pope G, Popovic M, Prokoshin F, Proudfoot J, Ptohos F, Pukhov O, Punzi G, Rakitine A, Ratnikov F, Reher D, Reichold A, Ribon A, Riegler W, Rimondi F, Ristori L, Riveline M, Robertson WJ, Robinson A, Rodrigo T, Rolli S, Rosenson L, Roser R, Rossin R, Roy A, Ruiz A, Safonov A, St Denis R, Sakumoto WK, Saltzberg D, Sanchez C, Sansoni A, Santi L, Sato H, Savard P, Schlabach P, Schmidt EE, Schmidt MP, Schmitt M, Scodellaro L, Scott A, Scribano A, Segler S, Seidel S, Seiya Y, Semenov A, Semeria F, Shah T, Shapiro MD, Shepard PF, Shibayama T, Shimojima M, Shochet M, Sidoti A, Siegrist J, Sill A, Sinervo P, Singh P, Slaughter AJ, Sliwa K, Smith C, Snider FD, Solodsky A, Spalding J, Speer T, Sphicas P, Spinella F, Spiropulu M, Spiegel L, Steele J, Stefanini A, Strologas J, Strumia F, Stuart D, Sumorok K, Suzuki T, Takano T, Takashima R, Takikawa K, Tamburello P, Tanaka M, Tannenbaum B, Tecchio M, Tesarek R, Teng PK, Terashi K, Tether S, Thompson AS, Thurman-Keup R, Tipton P, Tkaczyk S, Toback D, Tollefson K, Tollestrup A, Tonelli D, Toyoda H, Trischuk W, de Troconiz JF, Tseng J, Turini N, Ukegawa F, Vaiciulis T, Valls J, Vejcik S, Velev G, Veramendi G, Vidal R, Vila I, Vilar R, Volobouev I, von der Mey M, Vucinic D, Wagner RG, Wagner RL, Wallace NB, Wan Z, Wang C, Wang MJ, Ward B, Waschke S, Watanabe T, Waters D, Watts T, Webb R, Wenzel H, Wester WC, Wicklund AB, Wicklund E, Wilkes T, Williams HH, Wilson P, Winer BL, Winn D, Wolbers S, Wolinski D, Wolinski J, Wolinski S, Worm S, Wu X, Wyss J, Yao W, Yeh GP, Yeh P, Yoh J, Yosef C, Yoshida T, Yu I, Yu S, Yu Z, Zanetti A, Zetti F, Zucchelli S. Measurement of d sigma/dM and forward-backward charge asymmetry for high-mass Drell-Yan e(+)e(-) pairs from pp macro collisions at square root of s = 1.8 TeV. Phys Rev Lett 2001; 87:131802. [PMID: 11580576 DOI: 10.1103/physrevlett.87.131802] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2001] [Indexed: 05/23/2023]
Abstract
We report on a measurement of the mass dependence of the forward-backward charge asymmetry, A(FB), and production cross section d sigma/dM for e(+)e(-) pairs with mass M(ee)>40 GeV/c(2). The data sample consists of 108 pb(-1) of pp macro collisions at square root of s = 1.8 TeV taken by the Collider Detector at Fermilab during 1992-1995. The measured asymmetry and d sigma/dM are compared with the predictions of the standard model and a model with an extra Z' gauge boson.
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Affiliation(s)
- T Affolder
- Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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Berger MD, Lee AM, Simonette RA, Jackson BE, Roca AI, Singleton SF. Design and evaluation of a tryptophanless RecA protein with wild type activity. Biochem Biophys Res Commun 2001; 286:1195-203. [PMID: 11527427 DOI: 10.1006/bbrc.2001.5525] [Citation(s) in RCA: 10] [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: 11/22/2022]
Abstract
The C-terminal domain of the Escherichia coli RecA protein contains two tryptophan residues whose native fluorescence emission provides an interfering background signal when other fluorophores such as 1,N(6)-ethenoadenine, 2-aminopurine and other tryptophan residues are used to probe the protein's activities. Replacement of the wild type tryptophans with nonfluorescent residues is not trivial because one tryptophan is highly conserved and the C-terminal domain functions in both DNA binding as well as interfilament protein-protein contact. We undertook the task of creating a tryptophanless RecA protein with WT RecA activity by selecting suitable amino acid replacements for Trp290 and Trp308. Mutant proteins were screened in vivo using assays of SOS induction and cell survival following UV irradiation. Based on its activity in these assays, the W290H-W308F W-less RecA was purified for in vitro characterization and functioned like WT RecA in DNA-dependent ATPase and DNA strand exchange assays. Spectrofluorometry indicates that the W290H-W308F RecA protein generates no significant emission when excited with 295-nm light. Based on its ability to function as wild type protein in vivo and in vitro, this dark RecA protein will be useful for future fluorescence experiments.
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Affiliation(s)
- M D Berger
- Department of Chemistry, Rice University, Houston, Texas 77005, USA
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Affolder T, Akimoto H, Akopian A, Albrow MG, Amaral P, Amendolia SR, Amidei D, Anikeev K, Antos J, Apollinari G, Arisawa T, Asakawa T, Ashmanskas W, Azfar F, Azzi-Bacchetta P, Bacchetta N, Bailey MW, Bailey S, de Barbaro P, Barbaro-Galtieri A, Barnes VE, Barnett BA, Baroiant S, Barone M, Bauer G, Bedeschi F, Belforte S, Bell WH, Bellettini G, Bellinger J, Benjamin D, Bensinger J, Beretvas A, Berge JP, Berryhill J, Bevensee B, Bhatti A, Binkley M, Bisello D, Bishai M, Blair RE, Blocker C, Bloom K, Blumenfeld B, Blusk SR, Bocci A, Bodek A, Bokhari W, Bolla G, Bonushkin Y, Bortoletto D, Boudreau J, Brandl A, van den Brink S, Bromberg C, Brozovic M, Bruner N, Buckley-Geer E, Budagov J, Budd HS, Burkett K, Busetto G, Byon-Wagner A, Byrum KL, Calafiura P, Campbell M, Carithers W, Carlson J, Carlsmith D, Caskey W, Cassada J, Castro A, Cauz D, Cerri A, Chan AW, Chang PS, Chang PT, Chapman J, Chen C, Chen YC, Cheng MT, Chertok M, Chiarelli G, Chirikov-Zorin I, Chlachidze G, Chlebana F, Christofek L, Chu ML, Chung YS, Ciobanu CI, Clark AG, Connolly A, Conway J, Cordelli M, Cranshaw J, Cronin-Hennessy D, Cropp R, Culbertson R, Dagenhart D, D'Auria S, DeJongh F, Dell'Agnello S, Dell'Orso M, Demortier L, Deninno M, Derwent PF, Devlin T, Dittmann JR, Donati S, Done J, Dorigo T, Eddy N, Einsweiler K, Elias JE, Engels E, Errede D, Errede S, Fan Q, Feild RG, Fernandez JP, Ferretti C, Field RD, Fiori I, Flaugher B, Foster GW, Franklin M, Freeman J, Friedman J, Fukui Y, Furic I, Galeotti S, Gallinaro M, Gao T, Garcia-Sciveres M, Garfinkel AF, Gatti P, Gay C, Gerdes DW, Giannetti P, Giromini P, Glagolev V, Gold M, Goldstein J, Gordon A, Gorelov I, Goshaw AT, Gotra Y, Goulianos K, Green C, Grim G, Gris P, Groer L, Grosso-Pilcher C, Guenther M, Guillian G, Guimaraes da Costa J, Haas RM, Haber C, Hafen E, Hahn SR, Hall C, Handa T, Handler R, Hao W, Happacher F, Hara K, Hardman AD, Harris RM, Hartmann F, Hatakeyama K, Hauser J, Heinrich J, Heiss A, Herndon M, Hill C, Hoffman KD, Holck C, Hollebeek R, Holloway L, Hughes R, Huston J, Huth J, Ikeda H, Incandela J, Introzzi G, Iwai J, Iwata Y, James E, Jensen H, Jones M, Joshi U, Kambara H, Kamon T, Kaneko T, Karr K, Kasha H, Kato Y, Keaffaber TA, Kelley K, Kelly M, Kennedy RD, Kephart R, Khazins D, Kikuchi T, Kilminster B, Kim BJ, Kim DH, Kim HS, Kim MJ, Kim SH, Kim YK, Kirby M, Kirk M, Kirsch L, Klimenko S, Koehn P, Köngeter A, Kondo K, Konigsberg J, Kordas K, Korn A, Korytov A, Kovacs E, Kroll J, Kruse M, Kuhlmann SE, Kurino K, Kuwabara T, Laasanen AT, Lai N, Lami S, Lammel S, Lamoureux JI, Lancaster J, Lancaster M, Lander R, Latino G, LeCompte T, Lee AM, Lee K, Leone S, Lewis JD, Lindgren M, Liss TM, Liu JB, Liu YC, Lockyer N, Loken J, Loreti M, Lucchesi D, Lukens P, Lusin S, Lyons L, Lys J, Madrak R, Maeshima K, Maksimovic P, Malferrari L, Mangano M, Mariotti M, Martignon G, Martin A, Matthews JA, Mayer J, Mazzanti P, McFarland KS, McIntyre P, McKigney E, Menguzzato M, Menzione A, Mesropian C, Meyer A, Miao T, Miller R, Miller JS, Minato H, Miscetti S, Mishina M, Mitselmakher G, Moggi N, Moore E, Moore R, Morita Y, Moulik T, Mulhearn M, Mukherjee A, Muller T, Munar A, Murat P, Murgia S, Nachtman J, Nahn S, Nakada H, Nakaya T, Nakano I, Nelson C, Nelson T, Neu C, Neuberger D, Newman-Holmes C, Ngan CY, Niu H, Nodulman L, Nomerotski A, Oh SH, Ohmoto T, Ohsugi T, Oishi R, Okusawa T, Olsen J, Orejudos W, Pagliarone C, Palmonari F, Paoletti R, Papadimitriou V, Pappas SP, Partos D, Patrick J, Pauletta G, Paulini M, Paus C, Pescara L, Phillips TJ, Piacentino G, Pitts KT, Pompos A, Pondrom L, Pope G, Popovic M, Prokoshin F, Proudfoot J, Ptohos F, Pukhov O, Punzi G, Ragan K, Rakitine A, Reher D, Reichold A, Ribon A, Riegler W, Rimondi F, Ristori L, Riveline M, Robertson WJ, Robinson A, Rodrigo T, Rolli S, Rosenson L, Roser R, Rossin R, Roy A, Safonov A, St Denis R, Sakumoto WK, Saltzberg D, Sanchez C, Sansoni A, Santi L, Sato H, Savard P, Schlabach P, Schmidt EE, Schmidt MP, Schmitt M, Scodellaro L, Scott A, Scribano A, Segler S, Seidel S, Seiya Y, Semenov A, Semeria F, Shah T, Shapiro MD, Shepard PF, Shibayama T, Shimojima M, Shochet M, Siegrist J, Signorelli G, Sill A, Sinervo P, Singh P, Slaughter AJ, Sliwa K, Smith C, Snider FD, Solodsky A, Spalding J, Speer T, Sphicas P, Spinella F, Spiropulu M, Spiegel L, Steele J, Stefanini A, Strologas J, Strumia F, Stuart D, Sumorok K, Suzuki T, Takano T, Takashima R, Takikawa K, Tamburello P, Tanaka M, Tannenbaum B, Taylor W, Tecchio M, Teng PK, Terashi K, Tether S, Thompson AS, Thurman-Keup R, Tipton P, Tkaczyk S, Tollefson K, Tollestrup A, Toyoda H, Trischuk W, de Troconiz JF, Tseng J, Turini N, Ukegawa F, Vaiciulis T, Valls J, Vejcik S, Velev G, Vidal R, Vilar R, Volobouev I, Vucinic D, Wagner RG, Wagner RL, Wahl J, Wallace NB, Walsh AM, Wang C, Wang MJ, Watanabe T, Waters D, Watts T, Webb R, Wenzel H, Wester WC, Wicklund AB, Wicklund E, Wilkes T, Williams HH, Wilson P, Winer BL, Winn D, Wolbers S, Wolinski D, Wolinski J, Wolinski S, Worm S, Wu X, Wyss J, Yagil A, Yao W, Yeh GP, Yeh P, Yoh J, Yosef C, Yoshida T, Yu I, Yu S, Yu Z, Zanetti A, Zetti F, Zucchelli S. Measurement of the top quark p(T) distribution. Phys Rev Lett 2001; 87:102001. [PMID: 11531473 DOI: 10.1103/physrevlett.87.102001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2000] [Indexed: 05/23/2023]
Abstract
We have measured the p(T) distribution of top quarks that are pair produced in pp collisions at sqrt[s] = 1.8 TeV using a sample of tt decays in which we observe a single high- p(T) charged lepton, a neutrino, and four or more jets. We use a likelihood technique that corrects for the experimental bias introduced due to event reconstruction and detector resolution effects. The observed distribution is consistent with the standard model prediction. We use these data to place limits on the production of high- p(T) top quarks suggested in some models of anomalous top quark pair production.
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Affiliation(s)
- T Affolder
- Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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Abstract
The effects of augmented feedback on perceptions of ability (SPA), practice behaviors, and performance during motor skill instruction of a novel task were investigated. Fourth-grade students (N = 103) were randomly assigned to one of four conditions: (a) no feedback; (b) motivational feedback; (c) task feedback; or (d) motivation and task feedback. They then practiced simple and complex cupstacking skills. On a relatively simple task, the type of feedback did not have a significant effect on children's SPA, practice behaviors, or performance; but on a more complex task, differential effects of feedback were evident. Results indicate that informational feedback is an important factor in facilitating student engagement, fostering positive perceptions of ability, and ultimately improving performance on a challenging task.
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Affiliation(s)
- K B Fredenburg
- Department of Health, Human Performance and Recreation, Baylor University, USA.
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Rockman CB, Svahn JK, Willis DJ, Lamparello PJ, Adelman MA, Jacobowitz GR, Lee AM, Gagne P, Deutsch E, Landis R, Riles TS. Carotid endarterectomy in patients 55 years of age and younger. Ann Vasc Surg 2001; 15:557-62. [PMID: 11665441 DOI: 10.1007/s10016-001-0029-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Prior studies have suggested that young patients may be more prone to recurrent disease after carotid endarterectomy (CEA). The goal of this study was to review a series of CEAs performed on younger patients (< or = 55 years) and to determine if these patients are more likely to develop recurrent stenosis. A review was conducted of CEAs performed from 1985 through 1994. Analysis was performed on a study group of 94 young patients who underwent 109 CEAs during this time. A control group of 222 patients older than 55 years who underwent 256 CEAs during the years 1991 through 1993 was selected for comparison. During a mean of nearly 4 years of follow-up, younger patients were significantly more likely to experience a late failure of CEA, including total occlusion of the operated artery, or recurrent stenosis requiring redo surgery. Careful patient evaluation is important in choosing younger patients who require CEA. Implications of these data include mandating careful noninvasive follow-up examinations for younger patients undergoing CEA.
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Affiliation(s)
- C B Rockman
- Division of Vascular Surgery, New York University Medical Center, 530 First Avenue, Suite 6F, New York, NY 10016, USA.
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Abstract
The present study explored the interplay of psychosocial, gender, and cultural factors on Chinese married women's condom use. A total of 433 Chinese married women residing in Hong Kong participated in the study. Correlation results showed that participants' conservative gender attitudes toward sexuality and sexual decision making were related to less accurate HIV/AIDS knowledge and less concern about contacting the disease from their husbands. About 34.4% of the sexually active participants never used condoms in the past 6 months, and current condom use was associated with egalitarian gender attitudes, positive feelings about condom use, and concerns about contacting HIV/AIDS from their husbands. Among all participants, 32.5% reported that they would not use condoms in their future sexual encounters. Future condom use was related to shorter duration of marriage, accurate HIV/AIDS knowledge, egalitarian gender attitudes, current condom use, and positive feelings about condom use. Results from the logistic regression analyses showed that egalitarian gender attitudes toward sexuality and positive feelings about condom use were the most salient predictors for current and future condom use.
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Affiliation(s)
- C S Tang
- Department of Psychology, The Chinese University of Hong Kong, Shatin, NT.
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Miller LJ, Haven CP, McCollum SG, Lee AM, Kamman MR, Baumann DK, Anderson ME, Buderer MC. The International Space Station human life sciences experiment implementation process. Acta Astronaut 2001; 49:477-482. [PMID: 11669134 DOI: 10.1016/s0094-5765(01)00130-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The selection, definition, and development phases of a Life Sciences flight research experiment has been consistent throughout the past decade. The implementation process, however, has changed significantly within the past two years. This change is driven primarily by the shift from highly integrated, dedicated research missions on platforms with well defined processes to self contained experiments with stand alone operations on platforms which are being concurrently designed. For experiments manifested on the International Space Station (ISS) and/or on short duration missions, the more modular, streamlined, and independent the individual experiment is, the more likely it is to be successfully implemented before the ISS assembly is completed. During the assembly phase of the ISS, science operations are lower in priority than the construction of the station. After the station has been completed, it is expected that more resources will be available to perform research. The complexity of implementing investigations increases with the logistics needed to perform the experiment. Examples of logistics issues include- hardware unique to the experiment; large up and down mass and volume needs; access to crew and hardware during the ascent or descent phases; maintenance of hardware and supplies with a limited shelf life,- baseline data collection schedules with lengthy sessions or sessions close to the launch or landing; onboard stowage availability, particularly cold stowage; and extensive training where highly proficient skills must be maintained. As the ISS processes become better defined, experiment implementation will meet new challenges due to distributed management, on-orbit resource sharing, and adjustments to crew availability pre- and post-increment.
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Affiliation(s)
- L J Miller
- NASA Johnson Space Center, Houston, Texas, USA
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Abstract
Airway tone and airway hyperreactivity are mediated by the parasympathetic nerves that release acetylcholine onto muscarinic receptors (M1-M5). Stimulation of M1 and M3 muscarinic receptors causes bronchoconstriction. The M1 muscarinic receptor is excitatory, and facilitates neuronal transmission at the parasympathetic ganglion. The M2 receptor is an inhibitory prejunctional autoreceptor. The discovery of discrete muscarinic receptor subtypes prompted development of selective muscarinic receptor antagonists. Selective M3 receptor antagonists and antagonists selective for M1 and M3 receptors have recently entered clinical trials and offer much promise for the treatment of airways diseases.
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Affiliation(s)
- A M Lee
- Johns Hopkins University, Department of Physiology, Baltimore, MD 21205, USA
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