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Tinker RJ, Guess T, Rinker DC, Sheehan JH, Lubarsky D, Porath B, Mosera M, Mayo P, Solem E, Lee LA, Sharam A, Brault J. A novel, likely pathogenic variant in UBTF-related neurodegeneration with brain atrophy is associated with a severe divergent neurodevelopmental phenotype. Mol Genet Genomic Med 2022; 10:e2054. [PMID: 36106513 PMCID: PMC9747545 DOI: 10.1002/mgg3.2054] [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] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Accepted: 08/15/2022] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND A de novo, pathogenic, missense variant in UBTF, c.628G>A p.Glu210Lys, has been described as the cause of an emerging neurodegenerative disorder, Childhood-Onset Neurodegeneration with Brain Atrophy (CONDBA). The p.Glu210Lys alteration yields a positively charged stretch of three lysine residues. Functional studies confirmed this change results in a stronger interaction with negatively charged DNA and gain-of-function activity when compared to the wild-type sequence. The CONDBA phenotype reported in association with p.Glu210Lys consists of normal early-neurodevelopment followed by progressive motor, cognitive, and behavioral regression in early-to-middle childhood. METHODS AND RESULTS The current proband presented at 9 months of age with baseline developmental delay and more extensive neuroradiological findings, including pontine hypoplasia, thalamic volume loss and signal abnormality, and hypomyelination. Like the recurrent CONDBA p.Glu210Lys variant, this novel variant, c.608A>G p.(Gln203Arg) lies within the highly conserved second HMG-box homology domain and involves the replacement of the wild-type residue with a positively charged residue, arginine. Computational structural modeling demonstrates that this amino acid substitution potentiates the interaction between UBTF and DNA, likely resulting in a gain-of-function effect for the UBTF protein, UBF. CONCLUSION Here we present a new divergent phenotype associated with a novel, likely pathogenic, missense variant at a different position in the UBTF gene, c.608A>G p.(Gln203Arg).
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Affiliation(s)
- Rory J. Tinker
- Division of Medical Genetics and Genomic MedicineVanderbilt University Medical CenterNashvilleTennesseeUSA
| | - Tiffany Guess
- Department of Pathology, Microbiology, and ImmunologyVanderbilt University Medical CenterNashvilleTennesseeUSA
| | - David C. Rinker
- Department of Biological SciencesVanderbilt UniversityNashvilleTennesseeUSA
| | - Jonathan H. Sheehan
- Department of Internal Medicine, Division of Infectious DiseasesWashington University School of MedicineSt. LouisMissouriUSA
| | - Daniel Lubarsky
- Division of Medical Genetics and Genomic MedicineVanderbilt University Medical CenterNashvilleTennesseeUSA
| | - Binu Porath
- Department of Pathology, Microbiology, and ImmunologyVanderbilt University Medical CenterNashvilleTennesseeUSA
| | - Mackenzie Mosera
- Division of Medical Genetics and Genomic MedicineVanderbilt University Medical CenterNashvilleTennesseeUSA
| | - Ping Mayo
- Department of Pathology, Microbiology, and ImmunologyVanderbilt University Medical CenterNashvilleTennesseeUSA
| | - Emily Solem
- Department of Pathology, Microbiology, and ImmunologyVanderbilt University Medical CenterNashvilleTennesseeUSA
| | - Laura A. Lee
- Department of Pathology, Microbiology, and ImmunologyVanderbilt University Medical CenterNashvilleTennesseeUSA
| | - Asha Sharam
- Department of RadiologyVanderbilt University Medical CenterNashvilleTennesseeUSA
| | - Jennifer Brault
- Division of Medical Genetics and Genomic MedicineVanderbilt University Medical CenterNashvilleTennesseeUSA
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Korotun M, Hahn S, Quintero L, Rajan P, Iakovou A, Mayo P, Greenberg H. 0649 Ultrasound Assessment of Tongue Movement as a Predictor of Response to Hypoglossal Nerve Stimulation (HGNS). Sleep 2020. [DOI: 10.1093/sleep/zsaa056.645] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
HGNS is an approved therapy for obstructive sleep apnea (OSA). Initial setting of HGNS voltage is based on observation of anterior tongue movement, which may not reflect opening of the retroglossal airway. We developed an ultrasonographic (US) technique to assess tongue movement with HGNS. We correlated US measures of tongue movement at the initial HGNS voltage setting with the AHI determined by PSG/HSAT on HGNS therapy.
Methods
Eleven subjects implanted with INSPIRE™ (HGNS) were enrolled at least one month post-implantation. Initial HGNS voltage was determined while awake and semi-recumbent and set to achieve visualized anterior tongue protrusion at a tolerable stimulation voltage. A curvilinear probe (5-2MHz) was placed longitudinally in the submental region at the midline with the indicator pointed anteriorly. Hyoid bone excursion (HBE) with stimulation was used as a marker of base of tongue movement. PSG or HSAT was performed to determine AHI with HGNS. Responders were defined as those with a reduction in AHI ≥50% and an AHI <20 events/hr.
Results
N=11, 6M, 5F, Age=66.5 ±18.4 years, BMI=27.9±2.7 kg/m2. Pre-treatment AHI=38.8±13.4/hr, T-90%=10.5±16.7%. Mean HBE in responders=1.02±0.17cm vs 0.76±0.20cm in non-responders (p=0.006). Best subsets regression analysis performed using post-treatment AHI as the dependent variable and age, BMI, baseline AHI, HBE and HGNS voltage as independent variables showed that HBE (coef. -29.1, p=0.038) and BMI (coef. 2.6, p=0.018) were independent predictors of response.
Conclusion
We demonstrated that ultrasound assessment of HBE during HGNS may be a useful tool to predict response to therapy and guide HGNS settings. HBE, rather than voltage, predicted post-treatment AHI.
Support
None.
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Affiliation(s)
| | - S Hahn
- Northwell Health, New Hyde Park, NY
| | | | - P Rajan
- Northwell Health, New Hyde Park, NY
| | | | - P Mayo
- Northwell Health, New Hyde Park, NY
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Huang S, Sanfilippo F, Herpain A, Balik M, Chew M, Clau-Terré F, Corredor C, De Backer D, Fletcher N, Geri G, Mekontso-Dessap A, McLean A, Morelli A, Orde S, Petrinic T, Slama M, van der Horst ICC, Vignon P, Mayo P, Vieillard-Baron A. Systematic review and literature appraisal on methodology of conducting and reporting critical-care echocardiography studies: a report from the European Society of Intensive Care Medicine PRICES expert panel. Ann Intensive Care 2020; 10:49. [PMID: 32335780 PMCID: PMC7183522 DOI: 10.1186/s13613-020-00662-y] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 04/11/2020] [Indexed: 12/22/2022] Open
Abstract
Background The echocardiography working group of the European Society of Intensive Care Medicine recognized the need to provide structured guidance for future CCE research methodology and reporting based on a systematic appraisal of the current literature. Here is reported this systematic appraisal. Methods We conducted a systematic review, registered on the Prospero database. A total of 43 items of common interest to all echocardiography studies were initially listed by the experts, and other “topic-specific” items were separated into five main categories of interest (left ventricular systolic function, LVSF n = 15, right ventricular function, RVF n = 18, left ventricular diastolic function, LVDF n = 15, fluid management, FM n = 7, and advanced echocardiography techniques, AET n = 17). We evaluated the percentage of items reported per study and the fraction of studies reporting a single item. Results From January 2000 till December 2017 a total of 209 articles were included after systematic search and screening, 97 for LVSF, 48 for RVF, 51 for LVDF, 36 for FM and 24 for AET. Shock and ARDS were relatively common among LVSF articles (both around 15%) while ARDS comprised 25% of RVF articles. Transthoracic echocardiography was the main echocardiography mode, in 87% of the articles for AET topic, followed by 81% for FM, 78% for LVDF, 70% for LVSF and 63% for RVF. The percentage of items per study as well as the fraction of study reporting an item was low or very low, except for FM. As an illustration, the left ventricular size was only reported by 56% of studies in the LVSF topic, and half studies assessing RVF reported data on pulmonary artery systolic pressure. Conclusion This analysis confirmed sub-optimal reporting of several items listed by an expert panel. The analysis will help the experts in the development of guidelines for CCE study design and reporting.
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Affiliation(s)
- S Huang
- Intensive Care Unit, Nepean Hospital, The University of Sydney, Sydney, Australia
| | - F Sanfilippo
- Department of Anesthesia and Intensive Care, Policlinico-Vittorio Emanuele University Hospital, Catania, Italy
| | - A Herpain
- Department of Intensive Care, Erasme University Hospital, Univeristé Libre de Bruxelles, Brussels, Belgium
| | - M Balik
- Department of Anaesthesiology and Intensive Care, 1st Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic
| | - M Chew
- Department of Anaesthesiology and Intensive Care, Medical and Health Sciences, Linköping University, Linköping, Sweden
| | - F Clau-Terré
- Department of Anaesthesiology and Critical Care Medicine, Vall d'Hebron University Hospital, Barcelona, Spain
| | - C Corredor
- Department of Perioperative Medicine, Bart's Heart Centre St. Bartholomew's Hospital, W. Smithfield, London, UK
| | - D De Backer
- CHIREC Hospitals, Université Libre de Bruxelles, Brussels, Belgium
| | - N Fletcher
- Cardiothoracic Critical Care, St Georges Hospital, St Georges University of London, London, UK
| | - G Geri
- Intensive Care Medicine Unit, Assistance Publique-Hôpitaux de Paris, University Hospital Ambroise Paré, 92100, Boulogne-Billancourt, France.,INSERM, UMR-1018, CESP, Team Kidney and Heart, University of Versailles Saint-Quentin en Yvelines, Villejuif, France
| | - A Mekontso-Dessap
- Service de réanimation médicale, Hôpital Henri Mondor, Assistance Publique-Hôpitaux de Paris, 51 Avenue du Maréchal de Lattre de Tassigny, 94000, Créteil, France
| | - A McLean
- Intensive Care Unit, Nepean Hospital, The University of Sydney, Sydney, Australia
| | - A Morelli
- Department of Cardiovascular, Respiratory, Nephrological, Anesthesiological and Geriatric Sciences, University of Rome, "La Sapienza," Policlinico Umberto Primo, Viale del Policlinico, Rome, Italy
| | - S Orde
- Intensive Care Unit, Nepean Hospital, The University of Sydney, Sydney, Australia
| | - T Petrinic
- Bodleian Health Care Libraries, University of Oxford, Oxford, UK
| | - M Slama
- Medical Intensive Care Unit, Amiens University Hospital, Amiens, France
| | - I C C van der Horst
- Department of Intensive Care, Maastricht University Medical Centre+, University Maastricht, Maastricht, The Netherlands
| | - P Vignon
- Medical-Surgical Intensive Care Unit, Limoges University Hospital, Inserm CIC 1435, Limoges, France
| | - P Mayo
- Division of Pulmonary, Critical Care and Sleep Medicine, Northwell Health LIJ/NSUH Medical Center, Zucker School of Medicine, Hofstra/Northwell, Hempstead, NY, USA
| | - A Vieillard-Baron
- Intensive Care Medicine Unit, Assistance Publique-Hôpitaux de Paris, University Hospital Ambroise Paré, 92100, Boulogne-Billancourt, France. .,INSERM, UMR-1018, CESP, Team Kidney and Heart, University of Versailles Saint-Quentin en Yvelines, Villejuif, France.
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Vieillard-Baron A, Millington SJ, Sanfilippo F, Chew M, Diaz-Gomez J, McLean A, Pinsky MR, Pulido J, Mayo P, Fletcher N. Correction to: A decade of progress in critical care echocardiography: a narrative review. Intensive Care Med 2019; 45:911. [PMID: 30989263 DOI: 10.1007/s00134-019-05616-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The original version of this article unfortunately contained a mistake.
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Affiliation(s)
- Antoine Vieillard-Baron
- Intensive Care Medicine Unit, Assistance Publique-Hôpitaux de Paris, University Hospital Ambroise Paré, 92100, Boulogne-Billancourt, France. .,INSERM U-1018, CESP, Team 5, University of Versailles Saint-Quentin en Yvelines, Villejuif, France.
| | - S J Millington
- Department of Critical Care Medicine, The Ottawa Hospital, University of Ottawa, Ottawa, Canada
| | - F Sanfilippo
- Department of Anesthesia and Intensive Care, Policlinico-Vittorio Emanuele University Hospital, Catania, Italy
| | - M Chew
- Department of Anaesthesiology and Intensive Care, Medical and Health Sciences, Linköping University, Linköping, Sweden
| | - J Diaz-Gomez
- Department of Critical Care Medicine, Mayo Clinic, Jacksonville, FL, USA
| | - A McLean
- Intensive Care Nepean Hospital, University of Sydney, Sydney, Australia
| | - M R Pinsky
- Department of Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | - J Pulido
- Cardiothoracic Anesthesiology and Critical Care Medicine, Cardiovascular Intensive Care Unit, Swedish Heart and Vascular Institute, Swedish Medical Center, US Anesthesia Partners, Seattle, WA, USA
| | - P Mayo
- Division of Pulmonary, Critical Care and Sleep Medicine, Northwell Health LIJ/NSUH Medical Center, Zucker School of Medicine, Hofstra/Northwell, USA
| | - N Fletcher
- Consultant in Cardiothoracic Critical Care, St Georges Hospital, St Georges University of London, London, UK.,Cleveland Clinic London, London, UK
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Vieillard-Baron A, Millington SJ, Sanfilippo F, Chew M, Diaz-Gomez J, McLean A, Pinsky MR, Pulido J, Mayo P, Fletcher N. A decade of progress in critical care echocardiography: a narrative review. Intensive Care Med 2019; 45:770-788. [DOI: 10.1007/s00134-019-05604-2] [Citation(s) in RCA: 89] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Accepted: 03/14/2019] [Indexed: 12/12/2022]
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Mayo P, Arntfield R, Balik M, Kory P, Mathis G, Schmidt G, Slama M, Volpicelli G, Xirouchaki N, McLean A, Vieillard-Baron A. The ICM research agenda on critical care ultrasonography. Intensive Care Med 2017; 43:1257-1269. [DOI: 10.1007/s00134-017-4734-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Accepted: 02/21/2017] [Indexed: 11/29/2022]
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7
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Silk PJ, Ryall K, Mayo P, MaGee DI, Leclair G, Fidgen J, Lavallee R, Price J, McConaghy J. A Biologically Active Analog of the Sex Pheromone of the Emerald Ash Borer, Agrilus planipennis. J Chem Ecol 2015; 41:294-302. [PMID: 25786893 DOI: 10.1007/s10886-015-0562-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [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: 02/09/2015] [Accepted: 02/27/2015] [Indexed: 10/23/2022]
Abstract
The emerald ash borer, Agrilus planipennis (Coleoptera: Buprestidae) (EAB), is an invasive species causing unprecedented levels of mortality to ash trees in its introduced range. The female-produced sex pheromone of EAB has been shown to contain the macrocyclic lactone (3Z)-dodecen-12-olide. This compound and its geometrical isomer, (3E)-dodecen-12-olide, have been demonstrated previously to be EAG active and, in combination with a host-derived green leaf volatile, (3Z)-hexenol, to be attractive to male EAB in green prism traps deployed in the ash tree canopy. In the current study, we show that the saturated analog, dodecan-12-olide, is similarly active, eliciting an antennal response and significant attraction of EAB in both olfactometer and trapping bioassays in green traps with (3Z)-hexenol. Conformational modeling of the three lactones reveals that their energies and shapes are very similar, suggesting they might share a common receptor in EAB antennae. These findings provide new insight into the pheromone ecology of this species, highlighting the apparent plasticity in response of adults to the pheromone and its analog. Both of the unsaturated isomers are costly to synthesize, involving multistep, low-yielding processes. The saturated analog can be made cheaply, in high yield, and on large scale via Mitsunobu esterification of a saturated ω-hydroxy acid or more simply by Baeyer-Villiger oxidation of commercially available cyclododecanone. The analog can thus provide an inexpensive option as a lure for detection surveys as well as for possible mitigation purposes, such as mating disruption.
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Affiliation(s)
- P J Silk
- Canadian Forest Service - Atlantic Forestry Centre, Natural Resources Canada, 1350 Regent Street, Fredericton, NB, E3B 5P7, Canada,
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Cohen ML, Kim C, Haldiman T, ElHag M, Mehndiratta P, Pichet T, Lissemore F, Shea M, Cohen Y, Chen W, Blevins J, Appleby BS, Surewicz K, Surewicz WK, Sajatovic M, Tatsuoka C, Zhang S, Mayo P, Butkiewicz M, Haines JL, Lerner AJ, Safar JG. Rapidly progressive Alzheimer's disease features distinct structures of amyloid-β. ACTA ACUST UNITED AC 2015; 138:1009-22. [PMID: 25688081 DOI: 10.1093/brain/awv006] [Citation(s) in RCA: 141] [Impact Index Per Article: 15.7] [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: 01/14/2023]
Abstract
Genetic and environmental factors that increase the risk of late-onset Alzheimer disease are now well recognized but the cause of variable progression rates and phenotypes of sporadic Alzheimer's disease is largely unknown. We aimed to investigate the relationship between diverse structural assemblies of amyloid-β and rates of clinical decline in Alzheimer's disease. Using novel biophysical methods, we analysed levels, particle size, and conformational characteristics of amyloid-β in the posterior cingulate cortex, hippocampus and cerebellum of 48 cases of Alzheimer's disease with distinctly different disease durations, and correlated the data with APOE gene polymorphism. In both hippocampus and posterior cingulate cortex we identified an extensive array of distinct amyloid-β42 particles that differ in size, display of N-terminal and C-terminal domains, and conformational stability. In contrast, amyloid-β40 present at low levels did not form a major particle with discernible size, and both N-terminal and C- terminal domains were largely exposed. Rapidly progressive Alzheimer's disease that is associated with a low frequency of APOE e4 allele demonstrates considerably expanded conformational heterogeneity of amyloid-β42, with higher levels of distinctly structured amyloid-β42 particles composed of 30-100 monomers, and fewer particles composed of < 30 monomers. The link between rapid clinical decline and levels of amyloid-β42 with distinct structural characteristics suggests that different conformers may play an important role in the pathogenesis of distinct Alzheimer's disease phenotypes. These findings indicate that Alzheimer's disease exhibits a wide spectrum of amyloid-β42 structural states and imply the existence of prion-like conformational strains.
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Affiliation(s)
- Mark L Cohen
- 1 Department of Pathology, Case Western Reserve University School of Medicine, 2085 Adelbert Rd, Cleveland, OH 44106, USA 2 National Prion Disease Pathology Surveillance Centre, Case Western Reserve University School of Medicine, 2085 Adelbert Rd, Cleveland, OH 44106, USA
| | - Chae Kim
- 1 Department of Pathology, Case Western Reserve University School of Medicine, 2085 Adelbert Rd, Cleveland, OH 44106, USA
| | - Tracy Haldiman
- 1 Department of Pathology, Case Western Reserve University School of Medicine, 2085 Adelbert Rd, Cleveland, OH 44106, USA
| | - Mohamed ElHag
- 1 Department of Pathology, Case Western Reserve University School of Medicine, 2085 Adelbert Rd, Cleveland, OH 44106, USA
| | - Prachi Mehndiratta
- 3 Department of Neurology, Case Western Reserve University School of Medicine, 2085 Adelbert Rd, Cleveland, OH 44106, USA
| | - Termsarasab Pichet
- 3 Department of Neurology, Case Western Reserve University School of Medicine, 2085 Adelbert Rd, Cleveland, OH 44106, USA
| | - Frances Lissemore
- 3 Department of Neurology, Case Western Reserve University School of Medicine, 2085 Adelbert Rd, Cleveland, OH 44106, USA
| | - Michelle Shea
- 3 Department of Neurology, Case Western Reserve University School of Medicine, 2085 Adelbert Rd, Cleveland, OH 44106, USA
| | - Yvonne Cohen
- 1 Department of Pathology, Case Western Reserve University School of Medicine, 2085 Adelbert Rd, Cleveland, OH 44106, USA 2 National Prion Disease Pathology Surveillance Centre, Case Western Reserve University School of Medicine, 2085 Adelbert Rd, Cleveland, OH 44106, USA
| | - Wei Chen
- 1 Department of Pathology, Case Western Reserve University School of Medicine, 2085 Adelbert Rd, Cleveland, OH 44106, USA 2 National Prion Disease Pathology Surveillance Centre, Case Western Reserve University School of Medicine, 2085 Adelbert Rd, Cleveland, OH 44106, USA
| | - Janis Blevins
- 1 Department of Pathology, Case Western Reserve University School of Medicine, 2085 Adelbert Rd, Cleveland, OH 44106, USA 2 National Prion Disease Pathology Surveillance Centre, Case Western Reserve University School of Medicine, 2085 Adelbert Rd, Cleveland, OH 44106, USA
| | - Brian S Appleby
- 3 Department of Neurology, Case Western Reserve University School of Medicine, 2085 Adelbert Rd, Cleveland, OH 44106, USA 4 Department of Psychiatry, Case Western Reserve University School of Medicine, 2085 Adelbert Rd, Cleveland, OH 44106, USA
| | - Krystyna Surewicz
- 5 Department of Physiology and Biophysics, Case Western Reserve University School of Medicine, 2085 Adelbert Rd, Cleveland, OH 44106, USA
| | - Witold K Surewicz
- 5 Department of Physiology and Biophysics, Case Western Reserve University School of Medicine, 2085 Adelbert Rd, Cleveland, OH 44106, USA
| | - Martha Sajatovic
- 3 Department of Neurology, Case Western Reserve University School of Medicine, 2085 Adelbert Rd, Cleveland, OH 44106, USA 4 Department of Psychiatry, Case Western Reserve University School of Medicine, 2085 Adelbert Rd, Cleveland, OH 44106, USA
| | - Curtis Tatsuoka
- 3 Department of Neurology, Case Western Reserve University School of Medicine, 2085 Adelbert Rd, Cleveland, OH 44106, USA
| | - Shulin Zhang
- 1 Department of Pathology, Case Western Reserve University School of Medicine, 2085 Adelbert Rd, Cleveland, OH 44106, USA
| | - Ping Mayo
- 6 Department of Epidemiology and Biostatistics, Case Western Reserve University School of Medicine, 2085 Adelbert Rd, Cleveland, OH 44106, USA
| | - Mariusz Butkiewicz
- 6 Department of Epidemiology and Biostatistics, Case Western Reserve University School of Medicine, 2085 Adelbert Rd, Cleveland, OH 44106, USA
| | - Jonathan L Haines
- 6 Department of Epidemiology and Biostatistics, Case Western Reserve University School of Medicine, 2085 Adelbert Rd, Cleveland, OH 44106, USA
| | - Alan J Lerner
- 3 Department of Neurology, Case Western Reserve University School of Medicine, 2085 Adelbert Rd, Cleveland, OH 44106, USA
| | - Jiri G Safar
- 1 Department of Pathology, Case Western Reserve University School of Medicine, 2085 Adelbert Rd, Cleveland, OH 44106, USA 2 National Prion Disease Pathology Surveillance Centre, Case Western Reserve University School of Medicine, 2085 Adelbert Rd, Cleveland, OH 44106, USA 3 Department of Neurology, Case Western Reserve University School of Medicine, 2085 Adelbert Rd, Cleveland, OH 44106, USA
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Jeff JM, Brown-Gentry K, Goodloe R, Ritchie MD, Denny JC, Kho AN, Armstrong LL, McClellan B, Mayo P, Allen M, Jin H, Gillani NB, Schnetz-Boutaud N, Dilks HH, Basford MA, Pacheco JA, Jarvik GP, Chisholm RL, Roden DM, Hayes MG, Crawford DC. Replication of SCN5A Associations with Electrocardio-graphic Traits in African Americans from Clinical and Epidemiologic Studies. Evol Comput Mach Learn Data Min Bioinform 2015; 2014:939-951. [PMID: 25590050 PMCID: PMC4290789 DOI: 10.1007/978-3-662-45523-4_76] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The NAv1.5 sodium channel α subunit is the predominant α-subunit expressed in the heart and is associated with cardiac arrhythmias. We tested five previously identified SCN5A variants (rs7374138, rs7637849, rs7637849, rs7629265, and rs11129796) for an association with PR interval and QRS duration in two unique study populations: the Third National Health and Nutrition Examination Survey (NHANES III, n= 552) accessed by the Epidemiologic Architecture for Genes Linked to Environment (EAGLE) and a combined dataset (n= 455) from two biobanks linked to electronic medical records from Vanderbilt University (BioVU) and Northwestern University (NUgene) as part of the electronic Medical Records & Genomics (eMERGE) network. A meta-analysis including all three study populations (n~4,000) suggests that eight SCN5A associations were significant for both QRS duration and PR interval (p<5.0E-3) with little evidence for heterogeneity across the study populations. These results suggest that published SCN5A associations replicate across different study designs in a meta-analysis and represent an important first step in utility of multiple study designs for genetic studies and the identification/characterization of genetic variants associated with ECG traits in African-descent populations.
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Affiliation(s)
- Janina M. Jeff
- Charles Bronfman Institute for Personalized Medicine, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Kristin Brown-Gentry
- Center for Human Genetics Research, Vanderbilt University, Nashville, TN 37232, USA
| | - Robert Goodloe
- Center for Human Genetics Research, Vanderbilt University, Nashville, TN 37232, USA
| | - Marylyn D. Ritchie
- Department of Biochemistry and Molecular Biology, Penn State University, University Park, PA 16802, USA
| | - Joshua C. Denny
- Department of Medicine, Division of Clinical Pharmacology, Vanderbilt University, Nashville, TN 37232, USA
- Department of Biomedical Informatics, Vanderbilt University, Nashville, TN 37232, USA
| | - Abel N. Kho
- Division of General Internal Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Loren L. Armstrong
- Division of Endocrinology, Metabolism, and Molecular Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Bob McClellan
- Center for Human Genetics Research, Vanderbilt University, Nashville, TN 37232, USA
| | - Ping Mayo
- Center for Human Genetics Research, Vanderbilt University, Nashville, TN 37232, USA
| | - Melissa Allen
- Center for Human Genetics Research, Vanderbilt University, Nashville, TN 37232, USA
| | - Hailing Jin
- Center for Human Genetics Research, Vanderbilt University, Nashville, TN 37232, USA
| | - Niloufar B. Gillani
- Center for Human Genetics Research, Vanderbilt University, Nashville, TN 37232, USA
| | | | - Holli H. Dilks
- Center for Human Genetics Research, Vanderbilt University, Nashville, TN 37232, USA
| | - Melissa A. Basford
- Office of Personalized Medicine, Vanderbilt University, Nashville, TN 37232, USA
| | - Jennifer A. Pacheco
- Center for Genetic Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Gail P. Jarvik
- University of Washington Medical Center, Seattle, WA 98195, USA
| | - Rex L. Chisholm
- Center for Genetic Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Dan M. Roden
- Department of Medicine, Division of Clinical Pharmacology, Vanderbilt University, Nashville, TN 37232, USA
- Office of Personalized Medicine, Vanderbilt University, Nashville, TN 37232, USA
- Department of Pharmacology, Vanderbilt University, Nashville, TN 37232, USA
| | - M. Geoffrey Hayes
- Division of Endocrinology, Metabolism, and Molecular Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Dana C. Crawford
- Center for Human Genetics Research, Vanderbilt University, Nashville, TN 37232, USA
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Crawford DC, Dumitrescu L, Goodloe R, Brown-Gentry K, Boston J, McClellan B, Sutcliffe C, Wiseman R, Baker P, Pericak-Vance MA, Scott WK, Allen M, Mayo P, Schnetz-Boutaud N, Dilks HH, Haines JL, Pollin TI. Rare variant APOC3 R19X is associated with cardio-protective profiles in a diverse population-based survey as part of the Epidemiologic Architecture for Genes Linked to Environment Study. ACTA ACUST UNITED AC 2014; 7:848-53. [PMID: 25363704 DOI: 10.1161/circgenetics.113.000369] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND A founder mutation was recently discovered and described as conferring favorable lipid profiles and reduced subclinical atherosclerotic disease in a Pennsylvania Amish population. Preliminary data have suggested that this null mutation APOC3 R19X (rs76353203) is rare in the general population. METHODS AND RESULTS To better describe the frequency and lipid profile in the general population, we as part of the Population Architecture using Genomics and Epidemiology I Study and the Epidemiological Architecture for Genes Linked to Environment Study genotyped rs76353203 in 1113 Amish participants from Ohio and Indiana and 19 613 participants from the National Health and Nutrition Examination Surveys (NHANES III, 1999 to 2002, and 2007 to 2008). We found no carriers among the Ohio and Indiana Amish. Of the 19 613 NHANES participants, we identified 31 participants carrying the 19X allele, for an overall allele frequency of 0.08%. Among fasting adults, the 19X allele was associated with lower triglycerides (n=7603; β=-71.20; P=0.007) and higher high-density lipoprotein cholesterol (n=8891; β=15.65; P=0.0002) and, although not significant, lower low-density lipoprotein cholesterol (n=6502; β= -4.85; P=0.68) after adjustment for age, sex, and race/ethnicity. On average, 19X allele participants had approximately half the triglyceride levels (geometric means, 51.3 to 69.7 versus 134.6 to 141.3 mg/dL), >20% higher high-density lipoprotein cholesterol levels (geometric means, 56.8 to 74.4 versus 50.38 to 53.36 mg/dL), and lower low-density lipoprotein cholesterol levels (geometric means, 104.5 to 128.6 versus 116.1 to 125.7 mg/dL) compared with noncarrier participants. CONCLUSIONS These data demonstrate that APOC3 19X exists in the general US population in multiple racial/ethnic groups and is associated with cardio-protective lipid profiles.
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Affiliation(s)
- Dana C Crawford
- From the Institute for Computational Biology (D.C.C., P.M., J.L.H.), Department of Epidemiology and Biostatistics, Case Western Reserve University, Cleveland, OH (D.C.C., J.L.H.); Center for Human Genetics Research (L.D., R.G., K.B.-G., J.B., B.M., M.A., N.S.-B.), Department of Molecular Physiology and Biophysics (L.D.), Vanderbilt Technologies for Advanced Genomics Core Facility, Vanderbilt University, Nashville, TN (C.S., R.W., P.B., H.H.D.); Hussman Institute for Human Genomics, University of Miami, FL (M.A.P.-V., W.K.S.); and Division of Endocrinology, Diabetes, and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore (T.I.P.).
| | - Logan Dumitrescu
- From the Institute for Computational Biology (D.C.C., P.M., J.L.H.), Department of Epidemiology and Biostatistics, Case Western Reserve University, Cleveland, OH (D.C.C., J.L.H.); Center for Human Genetics Research (L.D., R.G., K.B.-G., J.B., B.M., M.A., N.S.-B.), Department of Molecular Physiology and Biophysics (L.D.), Vanderbilt Technologies for Advanced Genomics Core Facility, Vanderbilt University, Nashville, TN (C.S., R.W., P.B., H.H.D.); Hussman Institute for Human Genomics, University of Miami, FL (M.A.P.-V., W.K.S.); and Division of Endocrinology, Diabetes, and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore (T.I.P.)
| | - Robert Goodloe
- From the Institute for Computational Biology (D.C.C., P.M., J.L.H.), Department of Epidemiology and Biostatistics, Case Western Reserve University, Cleveland, OH (D.C.C., J.L.H.); Center for Human Genetics Research (L.D., R.G., K.B.-G., J.B., B.M., M.A., N.S.-B.), Department of Molecular Physiology and Biophysics (L.D.), Vanderbilt Technologies for Advanced Genomics Core Facility, Vanderbilt University, Nashville, TN (C.S., R.W., P.B., H.H.D.); Hussman Institute for Human Genomics, University of Miami, FL (M.A.P.-V., W.K.S.); and Division of Endocrinology, Diabetes, and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore (T.I.P.)
| | - Kristin Brown-Gentry
- From the Institute for Computational Biology (D.C.C., P.M., J.L.H.), Department of Epidemiology and Biostatistics, Case Western Reserve University, Cleveland, OH (D.C.C., J.L.H.); Center for Human Genetics Research (L.D., R.G., K.B.-G., J.B., B.M., M.A., N.S.-B.), Department of Molecular Physiology and Biophysics (L.D.), Vanderbilt Technologies for Advanced Genomics Core Facility, Vanderbilt University, Nashville, TN (C.S., R.W., P.B., H.H.D.); Hussman Institute for Human Genomics, University of Miami, FL (M.A.P.-V., W.K.S.); and Division of Endocrinology, Diabetes, and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore (T.I.P.)
| | - Jonathan Boston
- From the Institute for Computational Biology (D.C.C., P.M., J.L.H.), Department of Epidemiology and Biostatistics, Case Western Reserve University, Cleveland, OH (D.C.C., J.L.H.); Center for Human Genetics Research (L.D., R.G., K.B.-G., J.B., B.M., M.A., N.S.-B.), Department of Molecular Physiology and Biophysics (L.D.), Vanderbilt Technologies for Advanced Genomics Core Facility, Vanderbilt University, Nashville, TN (C.S., R.W., P.B., H.H.D.); Hussman Institute for Human Genomics, University of Miami, FL (M.A.P.-V., W.K.S.); and Division of Endocrinology, Diabetes, and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore (T.I.P.)
| | - Bob McClellan
- From the Institute for Computational Biology (D.C.C., P.M., J.L.H.), Department of Epidemiology and Biostatistics, Case Western Reserve University, Cleveland, OH (D.C.C., J.L.H.); Center for Human Genetics Research (L.D., R.G., K.B.-G., J.B., B.M., M.A., N.S.-B.), Department of Molecular Physiology and Biophysics (L.D.), Vanderbilt Technologies for Advanced Genomics Core Facility, Vanderbilt University, Nashville, TN (C.S., R.W., P.B., H.H.D.); Hussman Institute for Human Genomics, University of Miami, FL (M.A.P.-V., W.K.S.); and Division of Endocrinology, Diabetes, and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore (T.I.P.)
| | - Cara Sutcliffe
- From the Institute for Computational Biology (D.C.C., P.M., J.L.H.), Department of Epidemiology and Biostatistics, Case Western Reserve University, Cleveland, OH (D.C.C., J.L.H.); Center for Human Genetics Research (L.D., R.G., K.B.-G., J.B., B.M., M.A., N.S.-B.), Department of Molecular Physiology and Biophysics (L.D.), Vanderbilt Technologies for Advanced Genomics Core Facility, Vanderbilt University, Nashville, TN (C.S., R.W., P.B., H.H.D.); Hussman Institute for Human Genomics, University of Miami, FL (M.A.P.-V., W.K.S.); and Division of Endocrinology, Diabetes, and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore (T.I.P.)
| | - Rachel Wiseman
- From the Institute for Computational Biology (D.C.C., P.M., J.L.H.), Department of Epidemiology and Biostatistics, Case Western Reserve University, Cleveland, OH (D.C.C., J.L.H.); Center for Human Genetics Research (L.D., R.G., K.B.-G., J.B., B.M., M.A., N.S.-B.), Department of Molecular Physiology and Biophysics (L.D.), Vanderbilt Technologies for Advanced Genomics Core Facility, Vanderbilt University, Nashville, TN (C.S., R.W., P.B., H.H.D.); Hussman Institute for Human Genomics, University of Miami, FL (M.A.P.-V., W.K.S.); and Division of Endocrinology, Diabetes, and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore (T.I.P.)
| | - Paxton Baker
- From the Institute for Computational Biology (D.C.C., P.M., J.L.H.), Department of Epidemiology and Biostatistics, Case Western Reserve University, Cleveland, OH (D.C.C., J.L.H.); Center for Human Genetics Research (L.D., R.G., K.B.-G., J.B., B.M., M.A., N.S.-B.), Department of Molecular Physiology and Biophysics (L.D.), Vanderbilt Technologies for Advanced Genomics Core Facility, Vanderbilt University, Nashville, TN (C.S., R.W., P.B., H.H.D.); Hussman Institute for Human Genomics, University of Miami, FL (M.A.P.-V., W.K.S.); and Division of Endocrinology, Diabetes, and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore (T.I.P.)
| | - Margaret A Pericak-Vance
- From the Institute for Computational Biology (D.C.C., P.M., J.L.H.), Department of Epidemiology and Biostatistics, Case Western Reserve University, Cleveland, OH (D.C.C., J.L.H.); Center for Human Genetics Research (L.D., R.G., K.B.-G., J.B., B.M., M.A., N.S.-B.), Department of Molecular Physiology and Biophysics (L.D.), Vanderbilt Technologies for Advanced Genomics Core Facility, Vanderbilt University, Nashville, TN (C.S., R.W., P.B., H.H.D.); Hussman Institute for Human Genomics, University of Miami, FL (M.A.P.-V., W.K.S.); and Division of Endocrinology, Diabetes, and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore (T.I.P.)
| | - William K Scott
- From the Institute for Computational Biology (D.C.C., P.M., J.L.H.), Department of Epidemiology and Biostatistics, Case Western Reserve University, Cleveland, OH (D.C.C., J.L.H.); Center for Human Genetics Research (L.D., R.G., K.B.-G., J.B., B.M., M.A., N.S.-B.), Department of Molecular Physiology and Biophysics (L.D.), Vanderbilt Technologies for Advanced Genomics Core Facility, Vanderbilt University, Nashville, TN (C.S., R.W., P.B., H.H.D.); Hussman Institute for Human Genomics, University of Miami, FL (M.A.P.-V., W.K.S.); and Division of Endocrinology, Diabetes, and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore (T.I.P.)
| | - Melissa Allen
- From the Institute for Computational Biology (D.C.C., P.M., J.L.H.), Department of Epidemiology and Biostatistics, Case Western Reserve University, Cleveland, OH (D.C.C., J.L.H.); Center for Human Genetics Research (L.D., R.G., K.B.-G., J.B., B.M., M.A., N.S.-B.), Department of Molecular Physiology and Biophysics (L.D.), Vanderbilt Technologies for Advanced Genomics Core Facility, Vanderbilt University, Nashville, TN (C.S., R.W., P.B., H.H.D.); Hussman Institute for Human Genomics, University of Miami, FL (M.A.P.-V., W.K.S.); and Division of Endocrinology, Diabetes, and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore (T.I.P.)
| | - Ping Mayo
- From the Institute for Computational Biology (D.C.C., P.M., J.L.H.), Department of Epidemiology and Biostatistics, Case Western Reserve University, Cleveland, OH (D.C.C., J.L.H.); Center for Human Genetics Research (L.D., R.G., K.B.-G., J.B., B.M., M.A., N.S.-B.), Department of Molecular Physiology and Biophysics (L.D.), Vanderbilt Technologies for Advanced Genomics Core Facility, Vanderbilt University, Nashville, TN (C.S., R.W., P.B., H.H.D.); Hussman Institute for Human Genomics, University of Miami, FL (M.A.P.-V., W.K.S.); and Division of Endocrinology, Diabetes, and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore (T.I.P.)
| | - Nathalie Schnetz-Boutaud
- From the Institute for Computational Biology (D.C.C., P.M., J.L.H.), Department of Epidemiology and Biostatistics, Case Western Reserve University, Cleveland, OH (D.C.C., J.L.H.); Center for Human Genetics Research (L.D., R.G., K.B.-G., J.B., B.M., M.A., N.S.-B.), Department of Molecular Physiology and Biophysics (L.D.), Vanderbilt Technologies for Advanced Genomics Core Facility, Vanderbilt University, Nashville, TN (C.S., R.W., P.B., H.H.D.); Hussman Institute for Human Genomics, University of Miami, FL (M.A.P.-V., W.K.S.); and Division of Endocrinology, Diabetes, and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore (T.I.P.)
| | - Holli H Dilks
- From the Institute for Computational Biology (D.C.C., P.M., J.L.H.), Department of Epidemiology and Biostatistics, Case Western Reserve University, Cleveland, OH (D.C.C., J.L.H.); Center for Human Genetics Research (L.D., R.G., K.B.-G., J.B., B.M., M.A., N.S.-B.), Department of Molecular Physiology and Biophysics (L.D.), Vanderbilt Technologies for Advanced Genomics Core Facility, Vanderbilt University, Nashville, TN (C.S., R.W., P.B., H.H.D.); Hussman Institute for Human Genomics, University of Miami, FL (M.A.P.-V., W.K.S.); and Division of Endocrinology, Diabetes, and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore (T.I.P.)
| | - Jonathan L Haines
- From the Institute for Computational Biology (D.C.C., P.M., J.L.H.), Department of Epidemiology and Biostatistics, Case Western Reserve University, Cleveland, OH (D.C.C., J.L.H.); Center for Human Genetics Research (L.D., R.G., K.B.-G., J.B., B.M., M.A., N.S.-B.), Department of Molecular Physiology and Biophysics (L.D.), Vanderbilt Technologies for Advanced Genomics Core Facility, Vanderbilt University, Nashville, TN (C.S., R.W., P.B., H.H.D.); Hussman Institute for Human Genomics, University of Miami, FL (M.A.P.-V., W.K.S.); and Division of Endocrinology, Diabetes, and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore (T.I.P.)
| | - Toni I Pollin
- From the Institute for Computational Biology (D.C.C., P.M., J.L.H.), Department of Epidemiology and Biostatistics, Case Western Reserve University, Cleveland, OH (D.C.C., J.L.H.); Center for Human Genetics Research (L.D., R.G., K.B.-G., J.B., B.M., M.A., N.S.-B.), Department of Molecular Physiology and Biophysics (L.D.), Vanderbilt Technologies for Advanced Genomics Core Facility, Vanderbilt University, Nashville, TN (C.S., R.W., P.B., H.H.D.); Hussman Institute for Human Genomics, University of Miami, FL (M.A.P.-V., W.K.S.); and Division of Endocrinology, Diabetes, and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore (T.I.P.)
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Murdock DG, Bradford Y, Schnetz-Boutaud N, Mayo P, Allen MJ, D’Aoust LN, Liang X, Mitchell SL, Zuchner S, Small GW, Gilbert JR, Pericak-Vance MA, Haines JL. KIAA1462, a coronary artery disease associated gene, is a candidate gene for late onset Alzheimer disease in APOE carriers. PLoS One 2013; 8:e82194. [PMID: 24349219 PMCID: PMC3861372 DOI: 10.1371/journal.pone.0082194] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [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] [Subscribe] [Scholar Register] [Received: 07/03/2013] [Accepted: 10/22/2013] [Indexed: 11/19/2022] Open
Abstract
Alzheimer disease (AD) is a devastating neurodegenerative disease affecting more than five million Americans. In this study, we have used updated genetic linkage data from chromosome 10 in combination with expression data from serial analysis of gene expression to choose a new set of thirteen candidate genes for genetic analysis in late onset Alzheimer disease (LOAD). Results in this study identify the KIAA1462 locus as a candidate locus for LOAD in APOE4 carriers. Two genes exist at this locus, KIAA1462, a gene associated with coronary artery disease, and "rokimi", encoding an untranslated spliced RNA The genetic architecture at this locus suggests that the gene product important in this association is either "rokimi", or a different isoform of KIAA1462 than the isoform that is important in cardiovascular disease. Expression data suggests that isoform f of KIAA1462 is a more attractive candidate for association with LOAD in APOE4 carriers than "rokimi" which had no detectable expression in brain.
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Affiliation(s)
- Deborah G. Murdock
- Center for Human Genetics Research and Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, United States of America
| | - Yuki Bradford
- Center for Human Genetics Research and Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, United States of America
| | - Nathalie Schnetz-Boutaud
- Center for Human Genetics Research and Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, United States of America
| | - Ping Mayo
- Center for Human Genetics Research and Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, United States of America
| | - Melissa J. Allen
- Center for Human Genetics Research and Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, United States of America
| | - Laura N. D’Aoust
- Center for Human Genetics Research and Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, United States of America
| | - Xueying Liang
- Center for Human Genetics Research and Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, United States of America
| | - Sabrina L. Mitchell
- Center for Human Genetics Research and Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, United States of America
| | - Stephan Zuchner
- Miami Institute for Human Genomics, Miller School of Medicine, University of Miami, Miami, Florida, United States of America
| | - Gary W. Small
- Semel Institute for Neuroscience and Human Behavior, University of California Los Angeles, Los Angeles, California, United States of America
| | - John R. Gilbert
- Miami Institute for Human Genomics, Miller School of Medicine, University of Miami, Miami, Florida, United States of America
| | - Margaret A. Pericak-Vance
- Miami Institute for Human Genomics, Miller School of Medicine, University of Miami, Miami, Florida, United States of America
| | - Jonathan L. Haines
- Center for Human Genetics Research and Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, United States of America
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12
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Goodloe R, Brown-Gentry K, Gillani NB, Jin H, Mayo P, Allen M, McClellan B, Boston J, Sutcliffe C, Schnetz-Boutaud N, Dilks HH, Crawford DC. Lipid trait-associated genetic variation is associated with gallstone disease in the diverse Third National Health and Nutrition Examination Survey (NHANES III). BMC Med Genet 2013; 14:120. [PMID: 24256507 PMCID: PMC3870971 DOI: 10.1186/1471-2350-14-120] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/23/2013] [Accepted: 10/22/2013] [Indexed: 01/10/2023]
Abstract
BACKGROUND Gallstone disease is one of the most common digestive disorders, affecting more than 30 million Americans. Previous twin studies suggest a heritability of 25% for gallstone formation. To date, one genome-wide association study (GWAS) has been performed in a population of European-descent. Several candidate gene studies have been performed in various populations, but most have been inconclusive. Given that gallstones consist of up to 80% cholesterol, we hypothesized that common genetic variants associated with high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C), and triglycerides (TG) would also be associated with gallstone risk. METHODS To test this hypothesis, the Epidemiologic Architecture for Genes Linked to Environment (EAGLE) study as part of the Population Architecture using Genomics and Epidemiology (PAGE) study performed tests of association between 49 GWAS-identified lipid trait SNPs and gallstone disease in non-Hispanic whites (446 cases and 1,962 controls), non-Hispanic blacks (179 cases and 1,540 controls), and Mexican Americans (227 cases and 1,478 controls) ascertained for the population-based Third National Health and Nutrition Examination Survey (NHANES III). RESULTS At a liberal significance threshold of 0.05, five, four, and four SNP(s) were associated with disease risk in non-Hispanic whites, non-Hispanic blacks, and Mexican Americans, respectively. No one SNP was associated with gallstone disease risk in all three racial/ethnic groups. The most significant association was observed for ABCG5 rs6756629 in non-Hispanic whites [odds ratio (OR) = 1.89; 95% confidence interval (CI) = 1.44-2.49; p = 0.0001). ABCG5 rs6756629 is in strong linkage disequilibrium with rs11887534 (D19H), a variant previously associated with gallstone disease risk in populations of European-descent. CONCLUSIONS We replicated a previously associated variant for gallstone disease risk in non-Hispanic whites. Further discovery and fine-mapping efforts in diverse populations are needed to fully describe the genetic architecture of gallstone disease risk in humans.
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Affiliation(s)
- Robert Goodloe
- Center for Human Genetics Research, Vanderbilt University, 2215 Garland Avenue, 519 Light Hall, Nashville, Tennessee 37232, USA
| | - Kristin Brown-Gentry
- Center for Human Genetics Research, Vanderbilt University, 2215 Garland Avenue, 519 Light Hall, Nashville, Tennessee 37232, USA
| | - Niloufar B Gillani
- Center for Human Genetics Research, Vanderbilt University, 2215 Garland Avenue, 519 Light Hall, Nashville, Tennessee 37232, USA
| | - Hailing Jin
- Center for Human Genetics Research, Vanderbilt University, 2215 Garland Avenue, 519 Light Hall, Nashville, Tennessee 37232, USA
| | - Ping Mayo
- Center for Human Genetics Research, Vanderbilt University, 2215 Garland Avenue, 519 Light Hall, Nashville, Tennessee 37232, USA
| | - Melissa Allen
- Center for Human Genetics Research, Vanderbilt University, 2215 Garland Avenue, 519 Light Hall, Nashville, Tennessee 37232, USA
| | - Bob McClellan
- Center for Human Genetics Research, Vanderbilt University, 2215 Garland Avenue, 519 Light Hall, Nashville, Tennessee 37232, USA
| | - Jonathan Boston
- Center for Human Genetics Research, Vanderbilt University, 2215 Garland Avenue, 519 Light Hall, Nashville, Tennessee 37232, USA
| | - Cara Sutcliffe
- Center for Human Genetics Research, Vanderbilt University, 2215 Garland Avenue, 519 Light Hall, Nashville, Tennessee 37232, USA
| | - Nathalie Schnetz-Boutaud
- Center for Human Genetics Research, Vanderbilt University, 2215 Garland Avenue, 519 Light Hall, Nashville, Tennessee 37232, USA
| | - Holli H Dilks
- Center for Human Genetics Research, Vanderbilt University, 2215 Garland Avenue, 519 Light Hall, Nashville, Tennessee 37232, USA
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, USA
| | - Dana C Crawford
- Center for Human Genetics Research, Vanderbilt University, 2215 Garland Avenue, 519 Light Hall, Nashville, Tennessee 37232, USA
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, USA
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13
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De Silva ECA, Silk PJ, Mayo P, Hillier NK, Magee D, Cutler GC. Identification of sex pheromone components of blueberry spanworm Itame argillacearia (Lepidoptera: Geometridae). J Chem Ecol 2013; 39:1169-81. [PMID: 23979535 DOI: 10.1007/s10886-013-0337-5] [Citation(s) in RCA: 12] [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: 02/28/2013] [Revised: 07/10/2013] [Accepted: 08/02/2013] [Indexed: 11/24/2022]
Abstract
Blueberry spanworm, Itame argillacearia (Packard), is an important defoliator of lowbush (syn. 'wild') blueberry, Vaccinium angustifolium Aiton, in north-eastern North America. The goal of the present study was to identify the female I. argillacearia sex pheromone, which could be used in traps for monitoring or mass-trapping this pest. Gas chromatography/mass spectrometry (GC/MS) and electroantennogram (EAG) recordings of sex pheromone gland extracts, in combination with chemical synthesis, a Y-tube olfactometer study and field experiments confirmed (2R,3S)-2-ethyl-3-((Z,Z)-tridecadi-2,5-enyl) oxirane (hereafter (Z,Z)-(3R,4S)-3,4-epoxy-6,9-heptadecadiene) and (Z,Z,Z)-3,6,9-heptadecatriene as female-produced sex pheromone components. (Z,Z)-(3R,4S)-3,4-Epoxy-6,9-heptadecadiene elicited a response from male I. argillacearia antennae during EAG recording, and in the Y-tube olfactometer tests males did not discriminate between a live female and (Z,Z)-(3R,4S)-3,4-epoxy-6,9-heptadecadiene. Field-trapping experiments showed that a blend of (Z,Z)-(3R,4S)-3,4-epoxy-6,9-heptadecadiene and (Z,Z,Z)-3,6,9-heptadecatriene was more attractive to male moths than (Z,Z)-(3R,4S)-3,4-epoxy-6,9-heptadecadiene alone.
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Affiliation(s)
- E C A De Silva
- Department of Environmental Sciences, Faculty of Agriculture, Dalhousie University, P.O. 550, Truro, NS, B2N 5E3, Canada
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14
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Fesinmeyer MD, North KE, Lim U, Bůžková P, Crawford DC, Haessler J, Gross MD, Fowke JH, Goodloe R, Love SA, Graff M, Carlson CS, Kuller LH, Matise TC, Hong CP, Henderson BE, Allen M, Rohde RR, Mayo P, Schnetz-Boutaud N, Monroe KR, Ritchie MD, Prentice RL, Kolonel LN, Manson JE, Pankow J, Hindorff LA, Franceschini N, Wilkens LR, Haiman CA, Le Marchand L, Peters U. Effects of smoking on the genetic risk of obesity: the population architecture using genomics and epidemiology study. BMC Med Genet 2013; 14:6. [PMID: 23311614 PMCID: PMC3564691 DOI: 10.1186/1471-2350-14-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/08/2012] [Accepted: 01/03/2013] [Indexed: 12/15/2022]
Abstract
Background Although smoking behavior is known to affect body mass index (BMI), the potential for smoking to influence genetic associations with BMI is largely unexplored. Methods As part of the ‘Population Architecture using Genomics and Epidemiology (PAGE)’ Consortium, we investigated interaction between genetic risk factors associated with BMI and smoking for 10 single nucleotide polymorphisms (SNPs) previously identified in genome-wide association studies. We included 6 studies with a total of 56,466 subjects (16,750 African Americans (AA) and 39,716 European Americans (EA)). We assessed effect modification by testing an interaction term for each SNP and smoking (current vs. former/never) in the linear regression and by stratified analyses. Results We did not observe strong evidence for interactions and only observed two interactions with p-values <0.1: for rs6548238/TMEM18, the risk allele (C) was associated with BMI only among AA females who were former/never smokers (β = 0.018, p = 0.002), vs. current smokers (β = 0.001, p = 0.95, pinteraction = 0.10). For rs9939609/FTO, the A allele was more strongly associated with BMI among current smoker EA females (β = 0.017, p = 3.5x10-5), vs. former/never smokers (β = 0.006, p = 0.05, pinteraction = 0.08). Conclusions These analyses provide limited evidence that smoking status may modify genetic effects of previously identified genetic risk factors for BMI. Larger studies are needed to follow up our results. Clinical Trial Registration NCT00000611
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Affiliation(s)
- Megan D Fesinmeyer
- Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA 98109-1024, USA
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Dumitrescu L, Goodloe R, Brown-Gentry K, Mayo P, Allen M, Jin H, Gillani NB, Schnetz-Boutaud N, Dilks HH, Crawford DC. Serum vitamins A and E as modifiers of lipid trait genetics in the National Health and Nutrition Examination Surveys as part of the Population Architecture using Genomics and Epidemiology (PAGE) study. Hum Genet 2012; 131:1699-708. [PMID: 22688886 DOI: 10.1007/s00439-012-1186-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2011] [Accepted: 05/27/2012] [Indexed: 01/08/2023]
Abstract
Both environmental and genetic factors impact lipid traits. Environmental modifiers of known genotype-phenotype associations may account for some of the "missing heritability" of these traits. To identify such modifiers, we genotyped 23 lipid-associated variants identified previously through genome-wide association studies (GWAS) in 2,435 non-Hispanic white, 1,407 non-Hispanic black, and 1,734 Mexican-American samples collected for the National Health and Nutrition Examination Surveys (NHANES). Along with lipid levels, NHANES collected environmental variables, including fat-soluble macronutrient serum levels of vitamin A and E levels. As part of the Population Architecture using Genomics and Epidemiology (PAGE) study, we modeled gene-environment interactions between vitamin A or vitamin E and 23 variants previously associated with high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C), and triglyceride (TG) levels. We identified three SNP × vitamin A and six SNP × vitamin E interactions at a significance threshold of p < 2.2 × 10(-3). The most significant interaction was APOB rs693 × vitamin E (p = 8.9 × 10(-7)) for LDL-C levels among Mexican-Americans. The nine significant interaction models individually explained 0.35-1.61% of the variation in any one of the lipid traits. Our results suggest that vitamins A and E may modify known genotype-phenotype associations; however, these interactions account for only a fraction of the overall variability observed for HDL-C, LDL-C, and TG levels in the general population.
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Affiliation(s)
- Logan Dumitrescu
- Center for Human Genetics Research, Vanderbilt University, 2215 Garland Avenue, 515B Light Hall, Nashville, TN 37232, USA.
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16
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Mayo P, Rodenas F, Campayo JM, Marín B, Verdú G. Quality Assurance Applied to Digital Radiographic Equipment by Developed Software for Phantom Images. NUCL TECHNOL 2011. [DOI: 10.13182/nt11-a12268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- P. Mayo
- Titania Servicios Tecnologicos, Sorolla Center, local 10, Avda. de las Cortes Valencianas, No. 58, 46015, Valencia, Spain
| | - F. Rodenas
- Universidad Politécnica de Valencia, Departamento de Matemáticas Camino de Vera s/n, 46022, Valencia, Spain
| | - J. M. Campayo
- Hospital Clínico Universitario de Valencia, Avda. Blasco Ibañez, No. 17 46017, Valencia, Spain
| | - B. Marín
- Universidad Politécnica de Valencia, Departamento de Ingeniería Química y Nuclear Camino de Vera s/n, 46022, Valencia, Spain
| | - G. Verdú
- Universidad Politécnica de Valencia, Departamento de Ingeniería Química y Nuclear Camino de Vera s/n, 46022, Valencia, Spain
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17
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Abstract
Copy number variations are important polymorphisms that can influence the expression of genes within and close to the rearranged region. This allows transcription levels to be higher or lower than those that can be achieved by control of transcription of a single copy. Recently, copy number variations have been associated with genetic diseases such as cancer, immune diseases, and neurological disorders. TaqMan copy number assays are designed to detect and measure copy number variation in the human genome using real-time polymerase chain reaction and unquenching of fluorescent probes for the target sequence.
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Affiliation(s)
- Ping Mayo
- Center for Human Genetic Research, Vanderbilt University, Nashville, Tennessee, USA
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18
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Wang G, Spencer KL, Scott WK, Whitehead P, Court BL, Ayala-Haedo J, Mayo P, Schwartz SG, Kovach JL, Gallins P, Polk M, Agarwal A, Postel EA, Haines JL, Pericak-Vance MA. Analysis of the indel at the ARMS2 3'UTR in age-related macular degeneration. Hum Genet 2010; 127:595-602. [PMID: 20182747 DOI: 10.1007/s00439-010-0805-8] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2009] [Accepted: 02/12/2010] [Indexed: 11/30/2022]
Abstract
Controversy remains as to which gene at the chromosome 10q26 locus confers risk for age-related macular degeneration (AMD) and statistical genetic analysis is confounded by the strong linkage disequilibrium (LD) across the region. Functional analysis of related genetic variations could solve this puzzle. Recently, Fritsche et al. reported that AMD is associated with unstable ARMS2 transcripts possibly caused by a complex insertion/deletion (indel; consisting of a 443 bp deletion and an adjacent 54 bp insertion) in its 3'UTR (untranslated region). To validate this indel, we sequenced our samples. We found that this indel is even more complex and is composed of two side-by-side indels separated by 17 bp: (1) 9 bp deletion with 10 bp insertion; (2) 417 bp deletion with 27 bp insertion. The indel is significantly associated with the risk of AMD, but is also in strong LD with the non-synonymous single nucleotide polymorphism rs10490924 (A69S). We also found that ARMS2 is expressed not only in placenta and retina but also in multiple human tissues. Using quantitative PCR, we found no correlation between the indel and ARMS2 mRNA level in human retina and blood samples. The lack of functional effects of the 3'UTR indel, the amino acid substitution of rs10490924 (A69S), and strong LD between them suggest that A69S, not the indel, is the variant that confers risk of AMD. To our knowledge, it is the first time it has been shown that ARMS2 is widely expressed in human tissues. Conclusively, the indel at 3'UTR of ARMS2 actually contains two side-by-side indels. The indels are associated with risk of AMD, but not correlated with ARMS2 mRNA level.
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Affiliation(s)
- Gaofeng Wang
- Dr. John T. Macdonald Foundation Department of Human Genetics, John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
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19
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Mayo P, Ródenas F, Verdu G, Campayo JM, Gallardo S. Analysis of image quality parameter of conventional and dental radiographic digital images. Annu Int Conf IEEE Eng Med Biol Soc 2010; 2010:3174-3177. [PMID: 21096597 DOI: 10.1109/iembs.2010.5627182] [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: 05/30/2023]
Abstract
The image quality obtained by a radiographic equipment is very useful to characterize the physical properties of the image radiographic chain, in a quality control of the radiographic equipment. In the radiographic technique it is necessary that the evaluation of the image can guarantee the constancy of its quality to carry out a suitable diagnosis. In this work we have designed some radiographic phantoms for different radiographic digital devices, as dental, conventional, equipments with computed radiography (phosphor plate) and direct radiography (sensor) technology. Additionally, we have developed a software to analyse the image obtained by the radiographic equipment with digital processing techniques, as edge detector, morphological operators, statistical test for the detected combinations‥ The design of these phantoms let the evaluation of a wide range of operating conditions of voltage, current and time of the digital equipments. Moreover, the image quality analysis by the automatic software, let study it with objective parameters.
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Affiliation(s)
- P Mayo
- Titania S.T. Sorolla Center, Avda. de las Cortes Valencianas, 58- 46015, Valencia, Spain
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20
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Mayo P, Rodenas F, Campayo JM, Pascual A, Marín B, Verdú G. Image Quality Assessment of Digital Dental Radiography Systems with Specifically Developed Phantom and Software. NUCL TECHNOL 2009. [DOI: 10.13182/nt09-a9133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- P. Mayo
- Titania ST, Grupo Dominguis, Sorolla Center local 10, Avda. de las Cortes Valencianas, No. 58, 46015, Valencia, Spain
| | - F. Rodenas
- Universidad Politécnica de Valencia Departamento de Matemáticas, Camino de Vera s/n, 46022, Valencia, Spain
| | - J. M. Campayo
- UTPR Lainsa, Grupo Dominguis Sorolla Center, local 10, Avda. de las Cortes Valencianas, No. 58, 46015, Valencia, Spain
| | - A. Pascual
- UTPR Lainsa, Grupo Dominguis Sorolla Center, local 10, Avda. de las Cortes Valencianas, No. 58, 46015, Valencia, Spain
| | - B. Marín
- Universidad Politécnica de Valencia Departamento de Ingeniería Química y Nuclear, Camino de Vera s/n 46022, Valencia, Spain
| | - G. Verdú
- Universidad Politécnica de Valencia Departamento de Ingeniería Química y Nuclear, Camino de Vera s/n 46022, Valencia, Spain
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21
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Mayo P, Rodenas F, Campayo JM, Pascual A, Marín B, Verdú G. Phantom Development for Constancy and Acceptance Test for Digital Radiographic Equipment. NUCL TECHNOL 2009. [DOI: 10.13182/nt09-a9132] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- P. Mayo
- Titania ST, Grupo Dominguis, Sorolla Center local 10, Avda. de las Cortes Valencianas, No. 58, 46015, Valencia, Spain
| | - F. Rodenas
- Universidad Politécnica de Valencia, Departamento de Matemáticas Camino de Vera s/n, 46022, Valencia, Spain
| | - J. M. Campayo
- UTPR Lainsa, Grupo Dominguis Sorolla Center, local 10, Avda. de las Cortes Valencianas, No. 58, 46015, Valencia, Spain
| | - A. Pascual
- UTPR Lainsa, Grupo Dominguis Sorolla Center, local 10, Avda. de las Cortes Valencianas, No. 58, 46015, Valencia, Spain
| | - B. Marín
- Universidad Politécnica de Valencia Departamento de Ingeniería Quémica y Nuclear, Camino de Vera s/n 46022, Valencia, Spain
| | - G. Verdú
- Universidad Politécnica de Valencia Departamento de Ingeniería Quémica y Nuclear, Camino de Vera s/n 46022, Valencia, Spain
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22
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Mayo P, Rodenas F, Verdú G, Campayo JM, Villaescusa JI. Analysis of digital image quality indexes for CIRS SP01 and CDMAM 3.4 mammographic phantoms. Annu Int Conf IEEE Eng Med Biol Soc 2009; 2008:418-21. [PMID: 19162682 DOI: 10.1109/iembs.2008.4649179] [Citation(s) in RCA: 1] [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] [Indexed: 11/07/2022]
Abstract
Mammographic phantom images are usually used to study the quality of images obtained by determined mammographic equipment. The digital image treatment techniques allow carrying out an automatic analysis of the phantom image. Nowadays, the digital radiographic equipments are replacing the traditional film-screen equipments and it is necessary to update the parameters to guarantee the quality of the process. In this work we apply some techniques of digital image processing to compute a specific image quality indexes for mammographic phantoms, namely CIRS SP01 and CDMAM 3.4. to study the evolution of this parameter with different varying conditions of the mammographic equipment. The indexes are calculated from a scoring system based on a designed algorithm which analyses the phantom image by means of an automatic detection of the test objects in each phantom.
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Affiliation(s)
- P Mayo
- ISIRYM, Institute for Industrial, Radiophysical and Environment Safety, Universidad Politécnica de Valencial, and Hospital Clinico de Valencia, Camino de Vera, s/n. 46022, Valencia, Spain
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23
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Mayo P, Rodenas F, Verdú G, Campayo JM, Villaescusa JI. Study of digital mammographic equipments by phantom image quality. Conf Proc IEEE Eng Med Biol Soc 2007; 2006:1994-6. [PMID: 17946081 DOI: 10.1109/iembs.2006.259245] [Citation(s) in RCA: 1] [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] [Indexed: 11/06/2022]
Abstract
Nowadays, the digital radiographic equipments are replacing the traditional film-screen equipments and it is necessary to update the parameters to guarantee the quality of the process. Contrast-detail phantoms are applied to digital radiography to study the threshold contrast-detail sensitivity at operation conditions of the equipment. The phantom that is studied in this work is CDMAM 3.4. One of the most extended indexes to measure the image quality in an objective way is the image quality figure (IQF). The aim of this work is to study the image quality of different images contrast-detail phantom CDMAM 3.4, carrying out the automatic detection of the contrast-detail combination and to establish a parameter which characterize in an objective way the mammographic image quality. This is useful to compare images obtained at different digital mammographic equipments to study the functioning of the equipments that facilitates the evaluation of image contrast and detail resolution.
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Affiliation(s)
- P Mayo
- Chem. & Nucl. Eng. Dept., Univ. Politecnica de Valencia
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24
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Mayo P, Rodenas F, Ginestar D, Verdu G. Nonlinear diffusion, negentropy and restoration of mammographic images. Conf Proc IEEE Eng Med Biol Soc 2007; 2005:6587-90. [PMID: 17281780 DOI: 10.1109/iembs.2005.1616010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Diffusive iterative filtering may be used to restore mammographic noisy images. Assuming that images are corrupted by additive gaussian noise, the negentropy as a statistical measure of the nongaussianity, can be used to estimate the amount of noise removed from noisy images. In particular, the evolution of the negentropy with the iterations is used to introduce a stopping criterion to end the diffusive filtering process. Because of computational complexity of the negentropy function, it is estimated by using an approximation of the negentropy introduced by Hyvärinen in the context of independent component analysis.
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Affiliation(s)
- P Mayo
- Departmento de Ingenieria Quimica y Nuclear, Universidad Politécnica de Valencia, 46022-Valencia, Spain
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25
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Abstract
Digital mammographic image processing often requires a previous application of filters to reduce the noise level of the image while preserving important details. This may improve the quality of digital mammographic images and contribute to an accurate diagnosis. In the literature, one can find a large amount of denoising techniques available for different kinds of images. We have adapted some of the existing denoising algorithms to mammographic images. We compare the effect of different denoising filters acting on digitized mammograms. The considered filters are: a local Wiener filter, a wavelet filter, a filter based on independent component analysis, and finally, a filter based on the diffusion equation. The noise reduction is measured by the mean squared error.
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Affiliation(s)
- P Mayo
- Dept. of Nucl. & Chem. Eng., Univ. Politécnica de Valencia, Spain
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26
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Mayo P, Rodenas F, Ginestar D, Verdú G, Miró R. Diffusion equations with negentropy applied to denoise mammographic images. Conf Proc IEEE Eng Med Biol Soc 2006; 2006:4751-4754. [PMID: 17946261 DOI: 10.1109/iembs.2006.259489] [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: 05/25/2023]
Abstract
Mammography is a radiographic technique used for the detection of breast lesions. The analysis of the digital image normally requires a previous application of filters as a preprocessing step to reduce the noise level of the image, while preserving important details to carry out a suitable diagnostic. In the literature, there are a large amount of denoising techniques applied to different medical images. In this work we have studied the performance of a diffusive filter with a stopping condition based on the statistical concept of negentropy, applied to denoise mammographic images. The negentropy has been succesfully prove with other denoising methods as independent component analysis by the authors in [1]. We have evaluated the final image quality obtained, measuring a root mean squared error between the noise-free initial image and the final restored image and compared the results obtained by this diffusive filter with those obtained by an adaptative non-linear Wiener filter.
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Affiliation(s)
- P Mayo
- Dept. of Chem. and Nucl. Eng., Politecnica Univ. of Valencia, Spain
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27
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Mayo P, Rodenas F, Verdú G, Villaescusa JI, Campayo JM. A comparative study of computer assisted assessment of image quality index for mammographic phantom images. Radiat Prot Dosimetry 2005; 116:620-3. [PMID: 16604712 DOI: 10.1093/rpd/nci222] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Mammographic phantom images are usually used to study the quality of images obtained by dedicated mammographic equipment. The digital image treatment techniques allow us to carry out an automatic analysis of the phantom image. In this work, some techniques of digital image processing are applied to compute a specific image quality index (IQI) for a mammographic phantom, namely CIRS model 11A version SP01. The algorithm designed analyses the phantom image by means of automatic detection of the number of microcalcifications, and the image resolution as the number of line pairs per millimetre. Then, the IQI is calculated from a scoring system. The manner in which the functioning conditions (kV and mAs) of the mammographic equipment and the preprocessing denoising method of the digital image affect the results for the IQI are also studied.
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Affiliation(s)
- P Mayo
- Chemical and Nuclear Engineering Department, Polytechnic University of Valencia, Camino de Vera s/n, 46022 Valencia, Spain
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Mayo P, Rodenas F, Verdú G, Villaescusa JI, Campayo JM. Automatic evaluation of the image quality of a mammographic phantom. Comput Methods Programs Biomed 2004; 73:115-128. [PMID: 14757255 DOI: 10.1016/s0169-2607(03)00023-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
In this work a method has been developed to analyse the digital image quality of a mammographic phantom by means of automatic process techniques. The techniques used for the digital image treatment are standard techniques as the image thresholding to detect objects, the regional growing for pixels pooling and the morphological operator application to determine the objects shape and size, etc. This study allows the obtention of information about the phantom characteristics, that due to its small size and lowly contrast can be obtained very difficultly by direct observation. The final aim of this work is to obtain one or more parameters to characterize the reference phantom quality image in an objective way. These parameters will serve to compare images obtained at different mammographic centers and also, to study the temporal evolution of the image quality produced by determined mammographic equipment.
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Affiliation(s)
- P Mayo
- Dpto. Ingenieri;a Qui;mica y Nuclear, Universidad Politécnica de Valencia, Valencia, Spain.
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Mayo P, Orlova G, Goddard JD, Tam W. Remote substituent effects on the oxymercuration of 2-substituted norbornenes: an experimental and theoretical study. J Org Chem 2001; 66:5182-91. [PMID: 11463272 DOI: 10.1021/jo010330h] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The effect of a remote substituent on regioselectivity in the oxymercuration of 2-substituted norbornenes has been investigated experimentally and theoretically using density functional theory (DFT). Regioselectivities of 1:1 to 14:1 were observed with various 2-substituted norbornenes. Exo-2-substituted norbornenes always gave greater regioselectivities compared to the corresponding endo-2-substituted norbornenes. The effects of solvents on the regioselectivity have also been examined, and ethereal solvents were found to be the best choice giving the optimal yield and regioselectivity. The relative rate of oxymercuration was estimated by competition experiments. The least reactive substrate (X = OAc) gave the highest regioselectivity. According to DFT predictions, the increased difference between the reaction barriers that results in the greater regioselectivity is correlated directly with the larger polarity of the C=C double bond, which is attacked by the mercury and oxygen. A number of stable exo and endo conformers were predicted. All exo conformers show the same polarity of the double bond, while some endo conformers have a reversal of this polarity. All the conformers except those with the OAc substituent are very close in energy and thus should react. The existence of a mixture of endo conformers with the C=C double bond of opposite polarity clearly explains a decrease in regioselectivity for the endo species. The origin of the greatest regioselectivity for the OAc-2-norbornenes lies in the fact that the conformer with the largest polarity is notably lower in energy than others due to an internal C-H-O hydrogen bond.
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Affiliation(s)
- P Mayo
- Guelph-Waterloo Centre for Graduate Work in Chemistry and Biochemistry, Department of Chemistry and Biochemistry, University of Guelph, Guelph, Ontario, Canada N1G 2W1
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30
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Affiliation(s)
- H C Vasconez
- Department of Surgery, University of Kentucky College of Medicine, Lexington 40536-0084
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33
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Hays H, Mayo P. A single case study using high dose hydromorphone to control severe chronic pain and serial psychometric testing to assess effects. Pain 1990. [DOI: 10.1016/0304-3959(90)92481-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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34
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Abstract
As part of a series of investigations to determine the effect of sensitisation by environmental mycobacteria on the efficacy of BCG vaccination in India, this study was carried out in Ahmednagar in Maharashtra. A preliminary skin test survey showed that the rate of sensitisation with age was much lower than in Agra, the site of a previous study, and BCG vaccination scars were associated with considerable enhancement in sensitisation to Tuberculin and other reagents. It was possible to set up prospective BCG vaccination studies in pre-school and primary and secondary school children. Follow up with skin tests were carried out 1 and 2 years later. By the second year, results were obtained almost identical with those 10 years after BCG administration in the UK. On this basis it is proposed that the vaccine is likely to provide a considerable level of protection in Ahmednagar. The results of this study also resemble those obtained in the very youngest age group studied in Agra. The marked differences between Indian towns strongly suggest the influence of exposure to mycobacteria in the environment.
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Affiliation(s)
- J L Stanford
- School of Pathology, Middlesex Hospital Medical School, London
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35
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Mayo P. Early thoracotomy and decortication for nontuberculous empyema in adults with and without underlying disease. A twenty-five year review. Am Surg 1985; 51:230-6. [PMID: 3985490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The present review deals with 63 adult patients having acute nontuberculous empyema treated by early thoracotomy and decortication, during the period from 1955 through 1979. Group I (38 patients) had postpneumonic empyema, but no underlying disease. Group II (25 patients) had acute empyema and one or more serious associated diseases. Positive cultures were present in 45 of 63 patients (71.4%). Most surgeons have customarily recommended conservative management, especially for patients in Group II, because of the supposedly "high risk" involved in decortication. Consequently, the mortality is extremely high. The empyema must be cured; a "well drained" or "controlled" empyema will not suffice. The severely ill patient can better withstand the ordeal of a major operation than the deleterious effects of a lingering empyema. The critically ill patient is best managed by the primary procedure of open thoracotomy and decortication. The author's experience confirms that such patients can expect an outlook (8% mortality) approaching the zero mortality of Group I patients.
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36
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Mayo P. Tracheobronchomegaly (Mounier-Kuhn Syndrome). J Ky Med Assoc 1984; 82:455-7. [PMID: 6491475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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37
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Mayo P. Spontaneous pneumothorax. A 28-year review. J Ky Med Assoc 1984; 82:369-73. [PMID: 6384397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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38
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Abstract
Splenic rupture heralded by acute thoracic empyema is rare. A review of 420 cases of spontaneous and delayed splenic rupture failed to list a single such instance. I have reported two unusual cases of spontaneous rupture of the spleen presenting in each instance an acute thoracic empyema without history of trauma.
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Mayo P, Saha SP, Long GA, Powell C. Surgical management of congenital lung cysts: a 16-year review. J Ky Med Assoc 1984; 82:327-30. [PMID: 6470570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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40
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Mayo P. Acute non-tuberculous empyema in children. A 25-year review. J Ky Med Assoc 1984; 82:163-7. [PMID: 6715963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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41
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Mayo P, Jernigan C. Giant-cell tumor of rib. A case report. Ala J Med Sci 1984; 21:82-3. [PMID: 6703253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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42
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Mayo P, Saha SP, Mayo W. Primary lung cancer in patients under 40: a collective review of 304 patients. J Ky Med Assoc 1983; 81:759-62. [PMID: 6631176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Mayo P, Saha SP. Spontaneous pneumothorax in the newborn. Am Surg 1983; 49:192-5. [PMID: 6881725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Spontaneous pneumothorax is more frequent during the newborn period than at any other time in childhood. Intubation, vigorous resuscitation, aspiration of meconium-stained amniotic fluid, and hyaline membrane disease have been associated most often with the occurrence of spontaneous pneumothorax; however, it may occur in the absence of any of these precursors. Most pneumothoraces occur in term babies (64%); however, the premature infant is more susceptible. Signs and symptoms are due chiefly to lung compression and include grunting, tachypnea, cyanosis, and retraction. The accumulation of air serves as an intrathoracic space-occupying lesion, an emergency condition that demands prompt diagnosis and treatment.
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MESH Headings
- Female
- Humans
- Infant, Newborn
- Infant, Newborn, Diseases/diagnosis
- Infant, Newborn, Diseases/etiology
- Infant, Newborn, Diseases/therapy
- Infant, Premature
- Infant, Premature, Diseases/diagnosis
- Infant, Premature, Diseases/etiology
- Infant, Premature, Diseases/therapy
- Male
- Pneumothorax/diagnosis
- Pneumothorax/etiology
- Pneumothorax/therapy
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Mayo P, Saha SP, McElvein RB. Spontaneous pneumothorax under anesthesia. Ala J Med Sci 1983; 20:84-5. [PMID: 6829871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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45
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Mayo P, Saha SP. Multiple primary bronchogenic carcinomas. J Ky Med Assoc 1982; 80:647-652. [PMID: 6292315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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Abstract
Acute nontuberculous empyema treated conventionally by thoracentesis, thoracostomy drainage, and antibiotics has an unacceptably high rate of morbidity and mortality. Early open thoracotomy to eliminate the empyema with decortication of the fibrinous peel and reexpansion of the lung has proven safe and effective for 25 years. The goals of treatment of acute nontuberculous empyema are: (1) to save life, (2) to eliminate the empyema, (3) to reexpand the trapped lung, (4) to restore mobility of the chest wall and diaphragm, (5) to return respiratory function to normal, (6) to eliminate complications or chronicity, and (7) to reduce the duration of hospital stay. Our studies confirm the normal values to be expected in patients who have had complete recovery from the acute empyema, and we lay to rest any concern that decortication might, in time, limit pulmonary function. We present the cases of 21 children who had acute and mature empyemas that were treated by open thoracotomy and decortication, with an average follow-up of 18 years, among whom there were no deaths or complications.
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Mayo P, Saha SP. Aneurysmal bone cyst of rib. J Ky Med Assoc 1982; 80:395-7. [PMID: 7119555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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48
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Mayo P, Saha SP. Achalasia simulating mediastinal tumor. J Ky Med Assoc 1982; 80:347-8. [PMID: 7097117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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49
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Mayo P, Saha SP, Jernigan CM. Lung cancer in women. A twenty-five year review. J Ky Med Assoc 1982; 80:275-7. [PMID: 7097112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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50
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Abstract
The joint and muscle forces arising from and generated in the knee during the activity of squatting, and rising from a deep squat have been calculated. The analysis involved the consideration of a two-dimensional model. Data was then collected from each of the subjects performing the activity using: a force platform; a ciné film used in conjunction with the X-rays to describe accurately the configuration of the lower limb; EMG data; anthropometric data. A computer program was developed to analyse the data and compute the forces in the leg. Six subjects were tested and graphs of joint and muscle forces versus knee angle were obtained for each of them. A discussion follows. The results for ascent and descent, and slow and fast activities are compared.
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