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Barata I, Bailey K, Gurr D, Lomibao A, Rosen L, Amato C, Benjamin L, Dietrich A, Sharieff G, Mace S. 284 Is There a Relationship Between Age and the Number of Laboratory Tests Performed Among Pediatric Patients in the Emergency Department? Ann Emerg Med 2012. [DOI: 10.1016/j.annemergmed.2012.06.262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Lee D, Weiselberg R, Loftus A, Bailey K, Aziz-Bose R, Hardial M, Su M, Bilello L, Ward M. 355 Prevalence of Occult Supra-therapeutic Salicylate and Acetaminophen Levels in Emergency Department Patients Presenting With a Primary Psychiatric Complaint. Ann Emerg Med 2012. [DOI: 10.1016/j.annemergmed.2012.06.387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Bailey K, Duflou J, Puranik R. Fatal cases of aortic dissection: an autopsy study. Int J Cardiol 2012; 158:148-9. [PMID: 22578734 DOI: 10.1016/j.ijcard.2012.04.030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2012] [Accepted: 04/08/2012] [Indexed: 11/25/2022]
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Xu CY, Hu SM, Singh J, Bailey K, Lu ZT, Mueller P, O'Connor TP, Welp U. Optical excitation and decay dynamics of ytterbium atoms embedded in a solid neon matrix. PHYSICAL REVIEW LETTERS 2011; 107:093001. [PMID: 21929234 DOI: 10.1103/physrevlett.107.093001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2011] [Indexed: 05/31/2023]
Abstract
Neutral ytterbium atoms embedded in solid neon qualitatively retain the structure of free atoms. Despite the atom-solid interaction, the 6s6p ³P(0) level is found to remain metastable with its lifetimes determined to be in the range of ten to hundreds of seconds. The atomic population can be almost completely transferred between the ground level and the metastable level via optical excitation and spontaneous decay. The dynamics of this process is examined and is used to explicitly demonstrate that the transition broadening mechanism is homogeneous.
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Jiang W, Williams W, Bailey K, Davis AM, Hu SM, Lu ZT, O'Connor TP, Purtschert R, Sturchio NC, Sun YR, Mueller P. 39Ar detection at the 10(-16) isotopic abundance level with atom trap trace analysis. PHYSICAL REVIEW LETTERS 2011; 106:103001. [PMID: 21469788 DOI: 10.1103/physrevlett.106.103001] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2010] [Indexed: 05/30/2023]
Abstract
Atom trap trace analysis, a laser-based atom counting method, has been applied to analyze atmospheric 39Ar (half-life=269 yr), a cosmogenic isotope with an isotopic abundance of 8×10(-16). In addition to the superior selectivity demonstrated in this work, the counting rate and efficiency of atom trap trace analysis have been improved by 2 orders of magnitude over prior results. The significant applications of this new analytical capability lie in radioisotope dating of ice and water samples and in the development of dark matter detectors.
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Hines P, Bailey K, Francis M. Contingent approaches to quality-based pricing within the agrifood industry. INTERNATIONAL JOURNAL OF LOGISTICS-RESEARCH AND APPLICATIONS 2011. [DOI: 10.1080/13675560600859193] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Miyabara Y, Camp J, Holmes D, Lahr B, Bailey K, Miller VM, Kearns AE. Coronary arterial calcification and thoracic spine mineral density in early menopause. Climacteric 2011; 14:438-44. [PMID: 21265610 DOI: 10.3109/13697137.2010.537409] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
OBJECTIVES Cardiovascular disease and osteoporosis increase in women after menopause. While aortic calcification is associated with bone loss in women, a similar relationship for coronary arterial calcification (CAC), a risk factor for coronary artery disease in women, is less clear. This study was designed to examine the relationship between CAC and volumetric bone mineral density (vBMD) in women (n=137) who were within a median of 18 months past their last menses at screening for the Kronos Early Estrogen Prevention Study (KEEPS). METHODS CAC was measured using 64-slice computed tomography; vBMD was measured from these images using the Spine Cancer Assessment program. Concentrations of osteocalcin, bone alkaline phosphatase, tartrate-resident acid phosphatase-5b and osteopontin as bone matrix protein in serum and plasma were evaluated by ELISA. RESULTS CAC scores ranged from 0 to 327.6 Agatston Units (AU); 113 women had a score of 0 AU, 20 had a CAC score between 0 and 50 AU, and four had a CAC score>50 AU. Although not statistically significant, there was a trend toward decreasing central density of thoracic T9 with increasing CAC. On average, levels of markers of bone turnover were within the normal range but did not correlate with age or with months past menopause. CONCLUSIONS Clinically significant CAC and spine vBMD are quantifiable from the same scans within the first 3 years of menopause. Additional work is needed to determine how these measurements change with increasing age or with estrogenic treatments.
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Bailey K, Richards-Waugh L, Clay D, Gebhardt M, Mahmoud H, Kraner JC. Fatality Involving the Ingestion of Phenazepam and Poppy Seed Tea. J Anal Toxicol 2010; 34:527-32. [DOI: 10.1093/jat/34.8.527] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Xiao B, Kuper H, Guan C, Bailey K, Limburg H. Rapid assessment of avoidable blindness in three counties, Jiangxi Province, China. Br J Ophthalmol 2010; 94:1437-42. [DOI: 10.1136/bjo.2009.165308] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Abstract
Potassium-argon ages of eight volcanic rocks from some of the geologically oldest flows exposed in the Galápagos Archipelago indicate that the Galápagos Islands have a probable maximum age of 3 million years. Rocks from six islands were dated; the oldest are from Española (3.2 +/- 0.2), Sante Fe (2.7 +/- 0.1), and Plazas (4.2 +/- 1.8 million years). The new data suggest that the Galápagos Islands are younger than previously supposed on the basis of marine magnetic anomaly dating, but they are older than most previously dated rocks from the Galápagos.
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Bailey K, Puranik R, Duflou J. 16-Year Retrospective of Fatal Aortic Dissection: A Review of Coronial Post-mortems. Heart Lung Circ 2010. [DOI: 10.1016/j.hlc.2010.06.686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Rose G, Gilbert TE, Thame M, Bailey K. Asthma clinic attendance improves quality of life of Jamaican asthmatic children and their parents. ACTA ACUST UNITED AC 2009; 29:203-8. [PMID: 19689862 DOI: 10.1179/027249309x12467994693897] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
BACKGROUND With the increasing incidence of paediatric asthma, there has been a corresponding increase in the physical, emotional and financial burden. This has led to a greater interest in determining the impact of asthma and its treatment on many aspects of patient functioning and wellbeing. AIM To assess the usefulness of the Asthma Clinic established in Jamaica in 1997 by ascertaining whether there has been improvement in quality of life of children and care-givers who attend the clinic. METHODS The quality of life of patients and their parents/care-givers before attending the Asthma Clinic of Bustamante Hospital for Children in Kingston, Jamaica was compared with that of 1 year afterwards. Parents or guardians were interviewed using the Pediatric Asthma Quality of Life Questionnaire which consists of three domains [symptoms (ten questions), emotional (eight questions) and activity (five questions)] and the Pediatric Asthma Caregiver's Quality of life Questionnaire which consist of two domains [emotional (nine questions) and activity (four questions)]. RESULTS Quality of life improved in patients and their parents/care-givers in all domains. CONCLUSION Attendance at an asthma clinic in Jamaica improved the quality of life of asthmatic children and their parents/care-givers.
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Sandy S, Simeon D, Bailey K, Pinto-Pereira L, Maharaj R, Seemungal T. Managing asthma in the Caribbean. W INDIAN MED J 2009; 58:293-294. [PMID: 20099766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
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Wagner SJ, Craici I, Reed D, Norby S, Bailey K, Wiste HJ, Wood CM, Moder KG, Liang KP, Liang KV, Rose C, Rozkos T, Sitina M, Grande JP, Garovic VD. Maternal and foetal outcomes in pregnant patients with active lupus nephritis. Lupus 2009; 18:342-7. [PMID: 19276302 DOI: 10.1177/0961203308097575] [Citation(s) in RCA: 88] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The objective of this study was to determine the impact of lupus nephritis disease activity on maternal and foetal outcomes in pregnant patients with systemic lupus erythematosus (SLE). Medical records of all pregnant patients with SLE treated at our institution between 1976 and 2007 were reviewed. All patients met American College of Rheumatology classification criteria for SLE. Demographic data, history of lupus nephritis, nephritis disease activity and maternal and foetal outcomes of pregnancy were abstracted. Active lupus nephritis was defined as the presence of proteinuria >0.5 g/day and/or active urinary sediment with or without an elevation in serum creatinine (Cr). Quiescent lupus nephritis was confirmed in the presence of proteinuria <0.5 mg/day and inactive urinary sediment. We identified 58 patients with 90 pregnancies. Compared with pregnancies in SLE patients without renal involvement (n = 47), pregnancies in patients with active lupus nephritis (n = 23) were associated with a higher incidence of maternal complications (57% vs 11%, P < 0.001), whereas those with quiescent lupus nephritis (n = 20) were not (35% vs 11%, P = 0.10). Women with active lupus nephritis were more likely to deliver preterm than women without lupus nephritis, median of 34 weeks vs 40 gestational weeks, respectively (P = 0.002) and were more likely to suffer foetal loss (35% vs 9%, P = 0.031). Active, but not quiescent, lupus nephritis during pregnancy is associated with a higher incidence of maternal and foetal complications compared with pregnancies in SLE patients without renal involvement.
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Morton KM, Thomson PC, Bailey K, Evans G, Maxwell WMC. Quality parameters for alpaca (Vicugna pacos) semen are affected by semen collection procedure. Reprod Domest Anim 2009; 45:637-43. [PMID: 19144029 DOI: 10.1111/j.1439-0531.2008.01321.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Artificial insemination (AI) is poorly developed in camelids owing to the difficulty in collecting high quality semen and the highly viscous nature of the semen. Semen collected by artificial vagina (AV) is often of low quality and must be improved before any further development of AI technology can occur. The present study investigated the effects of adding a cervix-like stricture to the AV, presence of females, collecting semen into Androhep, skim-milk or Tris diluents, and catalase supplementation (0, 100, 200 or 600 units/ml) of Tris diluent on alpaca semen quality parameters. The addition of a cervix-like stricture increased mating length (p < 0.05), whilst the presence of females during semen collection did not improve semen quality parameters (p > 0.05). Collection of semen into Tris diluent improved sperm motility (58.0 +/- 11.9%) compared with the control (34.0 +/- 10.8%; p < 0.05), Androhep (33.5 +/- 10.7%) and skim-milk diluents (28.2 +/- 10.4%). Semen viscosity was reduced by collection into Androhep (4.6 +/- 1.7 mm) and skim-milk diluents (3.6 +/- 1.3 mm) compared with Tris diluent (5.7 +/- 2.1 mm) and no collection medium (9.3 +/- 3.5 mm; p < 0.05). Tris diluent supplemented with 100, 200 or 600 units/ml catalase increased semen viscosity (5.0 +/- 3.2 and 4.9 +/- 3.2 mm). Collection of alpaca semen by AV into Tris diluent increased semen quality facilitating further development of AI technology in alpacas.
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Bailey K. The use of evidence-based clinical tools in occupational medicine. Occup Med (Lond) 2008; 58:556-60. [DOI: 10.1093/occmed/kqn128] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Bailey K, Mutrie D, Malik S. 230: Disparity Between Perceived and Actual Admitting Practices in Emergency Physicians. Ann Emerg Med 2008. [DOI: 10.1016/j.annemergmed.2008.01.200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Bell R, Bailey K, Cresswell T, Hawthorne G, Critchley J, Lewis-Barned N. Trends in prevalence and outcomes of pregnancy in women with pre-existing type I and type II diabetes. BJOG 2008; 115:445-52. [DOI: 10.1111/j.1471-0528.2007.01644.x] [Citation(s) in RCA: 165] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Mueller P, Sulai IA, Villari ACC, Alcántara-Núñez JA, Alves-Condé R, Bailey K, Drake GWF, Dubois M, Eléon C, Gaubert G, Holt RJ, Janssens RVF, Lecesne N, Lu ZT, O'Connor TP, Saint-Laurent MG, Thomas JC, Wang LB. Nuclear charge radius of 8He. PHYSICAL REVIEW LETTERS 2007; 99:252501. [PMID: 18233516 DOI: 10.1103/physrevlett.99.252501] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2007] [Indexed: 05/25/2023]
Abstract
The root-mean-square (rms) nuclear charge radius of 8He, the most neutron-rich of all particle-stable nuclei, has been determined for the first time to be 1.93(3) fm. In addition, the rms charge radius of 6He was measured to be 2.068(11) fm, in excellent agreement with a previous result. The significant reduction in charge radius from 6He to 8He is an indication of the change in the correlations of the excess neutrons and is consistent with the 8He neutron halo structure. The experiment was based on laser spectroscopy of individual helium atoms cooled and confined in a magneto-optical trap. Charge radii were extracted from the measured isotope shifts with the help of precision atomic theory calculations.
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Rezaie M, Bailey K, Lee J, Speight L, Ketchell R. 242 The impact of a referral pathway on management of CFRD. J Cyst Fibros 2007. [DOI: 10.1016/s1569-1993(07)60225-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Spring B, Doran N, Pagoto S, McChargue D, Cook JW, Bailey K, Crayton J, Hedeker D. Fluoxetine, smoking, and history of major depression: A randomized controlled trial. J Consult Clin Psychol 2007; 75:85-94. [PMID: 17295567 DOI: 10.1037/0022-006x.75.1.85] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The study was a randomized placebo-controlled trial testing whether fluoxetine selectively enhances cessation for smokers with a history of depression. Euthymic smokers with (H+, n = 109) or without (H-, n = 138) a history of major depression received 60 mg fluoxetine or placebo plus group behavioral quit-smoking treatment for 12 weeks. Fluoxetine initially enhanced cessation for H+ smokers (p = .02) but subsequently impaired cessation regardless of depressive history. Six months after quit date, fluoxetine-treated participants were 3.3 times more likely to be smoking (p = .02). Further research is warranted to determine why high-dose fluoxetine produces continuing effects that oppose tobacco abstinence.
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Guest JR, Scielzo ND, Ahmad I, Bailey K, Greene JP, Holt RJ, Lu ZT, O'Connor TP, Potterveld DH. Laser trapping of 225Ra and 226Ra with repumping by room-temperature blackbody radiation. PHYSICAL REVIEW LETTERS 2007; 98:093001. [PMID: 17359153 DOI: 10.1103/physrevlett.98.093001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2006] [Indexed: 05/14/2023]
Abstract
We have demonstrated Zeeman slowing and capture of neutral 225Ra and 226Ra atoms in a magneto-optical trap. The intercombination transition 1S0-->3P1 is the only quasicycling transition in radium and was used for laser-cooling and trapping. Repumping along the 3D1-->1P1 transition extended the lifetime of the trap from milliseconds to seconds. Room-temperature blackbody radiation was demonstrated to provide repumping from the metastable 3P0 level. We measured the isotope shift and hyperfine splittings on the 3D1-->1P1 transition with the laser-cooled atoms, and set a limit on the lifetime of the 3D1 level based on the measured blackbody repumping rate. Laser-cooled and trapped radium is an attractive system for studying fundamental symmetries.
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Furmonaviciene R, Ghaemmaghami AM, Boyd SE, Jones NS, Bailey K, Willis AC, Sewell HF, Mitchell DA, Shakib F. The protease allergen Der p 1 cleaves cell surface DC-SIGN and DC-SIGNR: experimental analysis of in silico substrate identification and implications in allergic responses. Clin Exp Allergy 2007; 37:231-42. [PMID: 17250696 DOI: 10.1111/j.1365-2222.2007.02651.x] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND The cysteine protease Der p 1 from the house dust mite Dermatophagoides pteronyssinus is one of the most potent allergens known. An attractive mechanism for a component of Der p 1 allergenicity lies in its ability to cleave key regulatory molecules from leucocyte surfaces, subverting cellular function and driving abnormal immunoglobulin E (IgE) responses. OBJECTIVE Although CD23, CD25 and CD40 have already been identified as major Der p 1 targets, other significant substrates may also exist. METHODS To investigate this, knowledge of the proteolytic properties of Der p 1 was used to perform in silico digestion of human dendritic cell surface proteins, using the prediction of protease specificity (PoPS) bioinformatics tool, in conjunction with cellular in vitro analysis and cleavage site determination. RESULTS Targets identified included DC-SIGN and DC-SIGNR, two C-type lectins implicated mostly in pathogen trafficking. Treatment of positively expressing cells with Der p 1 led to loss of detectable surface DC-SIGN and DC-SIGNR. Digestion of purified soluble recombinant DC-SIGN and DC-SIGNR, followed by N-terminal sequencing and MALDI mass spectrometry, indicated in each case one major cleavage site and several minor sites, the former correlating well with Der p 1 enzymology and the folded state of the substrate proteins. Loss of DC-SIGN from the cell surface led to reduced binding of intracellular adhesion molecule-3, an endogenous DC-SIGN ligand expressed on naïve T cells which is thought to be involved in T-helper type 1 cytokine signalling. CONCLUSION These data provide evidence of lectin involvement in the initiation of the allergic response and the value of using genome-wide in silico digestion tools.
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Ding Y, Hu SM, Bailey K, Davis AM, Dunford RW, Lu ZT, O'Connor TP, Young L. Thermal beam of metastable krypton atoms produced by optical excitation. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2007; 78:023103. [PMID: 17578099 DOI: 10.1063/1.2437193] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
A room-temperature beam of krypton atoms in the metastable 5s[3/2]2 level is demonstrated via an optical excitation method. A Kr-discharge lamp is used to produce vacuum ultraviolet photons at 124 nm for the first-step excitation from the ground level 4p6 1S0 to the 5s[3/2]1 level. An 819 nm Ti:sapphire laser is used for the second-step excitation from 5s[3/2]1 to 5s[3/2]2 followed by a spontaneous decay to the 5s[3/2]2 metastable level. A metastable atomic beam with an angular flux density of 3 x 10(14) s(-1) sr(-1) is achieved at the total gas flow rate of 0.01 cm3/s at STP (or 3 x 10(17) at./s). The dependences of the flux on the gas flow rate, laser power, and lamp parameters are investigated.
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Musser JH, Hudec TT, Bailey K. A Simple One-Step Synthesis of Alkyl Benzazol-2-carboxylates. SYNTHETIC COMMUN 2006. [DOI: 10.1080/00397918408063765] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Shiarli AM, Jennings R, Shi J, Bailey K, Davidson Y, Tian J, Bigio EH, Ghetti B, Murrell JR, Delisle MB, Mirra S, Crain B, Zolo P, Arima K, Iseki E, Murayama S, Kretzschmar H, Neumann M, Lippa C, Halliday G, Mackenzie J, Khan N, Ravid R, Dickson D, Wszolek Z, Iwatsubo T, Pickering-Brown SM, Mann DMA. Comparison of extent of tau pathology in patients with frontotemporal dementia with Parkinsonism linked to chromosome 17 (FTDP-17), frontotemporal lobar degeneration with Pick bodies and early onset Alzheimer's disease. Neuropathol Appl Neurobiol 2006; 32:374-87. [PMID: 16866983 DOI: 10.1111/j.1365-2990.2006.00736.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In order to gain insight into the pathogenesis of frontotemporal lobar degeneration (FTLD), the mean tau load in frontal cortex was compared in 34 patients with frontotemporal dementia linked to chromosome 17 (FTDP-17) with 12 different mutations in the tau gene (MAPT), 11 patients with sporadic FTLD with Pick bodies and 25 patients with early onset Alzheimer's disease (EOAD). Tau load was determined, as percentage of tissue occupied by stained product, by image analysis of immunohistochemically stained sections using the phospho-dependent antibodies AT8, AT100 and AT180. With AT8 and AT180 antibodies, the amount of tau was significantly (P < 0.001 in each instance) less than that in EOAD for both FTDP-17 (8.5% and 10.0% respectively) and sporadic FTLD with Pick bodies (16.1% and 10.0% respectively). With AT100, the amount of tau detected in FTDP-17 was 54% (P < 0.001) of that detected in EOAD, but no tau was detected in sporadic FTLD with Pick bodies using this particular antibody. The amount of insoluble tau deposited within the brain in FTDP-17 did not depend in any systematic way upon where the MAPT mutation was topographically located within the gene, or on the physiological or structural change generated by the mutation, regardless of which anti-tau antibody was used. Not only does the amount of tau deposited in the brain differ between the three disorders, but the pattern of phosphorylation of tau also varies according to disease. These findings raise important questions relating to the role of aggregated tau in neurodegeneration - whether this represents an adaptive response which promotes the survival of neurones, or whether it is a detrimental change that directly, or indirectly, brings about the demize of the affected cell.
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Bailey K, Gutfreund H, Ogston AG. Molecular weight of tropomyosin from rabbit muscle. Biochem J 2006; 43:279-81. [PMID: 16748401 PMCID: PMC1274680 DOI: 10.1042/bj0430279] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Bailey K, Hopkins RH, Dolby DE. The mechanism of degradation of starch by amylases: The action of malt amylase on alpha-amylodextrin. Biochem J 2006; 31:586-90. [PMID: 16746376 PMCID: PMC1266978 DOI: 10.1042/bj0310586] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Bailey K, Chibnall AC, Rees MW, Williams EF. Critique of the Foreman method for the estimation of the dicarboxylic acids in protein hydrolysates. Biochem J 2006; 37:360-72. [PMID: 16747653 PMCID: PMC1257918 DOI: 10.1042/bj0370360] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Bailey K, Norris FW. The nature and composition of the mucilage of the seed of white mustard (Brassica alba). Biochem J 2006; 26:1609-23. [PMID: 16744984 PMCID: PMC1261077 DOI: 10.1042/bj0261609] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Astbury WT, Dickinson S, Bailey K. The X-ray interpretation of denaturation and the structure of the seed globulins. Biochem J 2006; 29:2351-2360.1. [PMID: 16745914 PMCID: PMC1266766 DOI: 10.1042/bj0292351] [Citation(s) in RCA: 269] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Bailey K, Webb EC. Purification of yeast hexokinase and its reaction with betabeta'-dichlorodiethyl sulphide. Biochem J 2006; 42:60-8. [PMID: 16748250 PMCID: PMC1258597 DOI: 10.1042/bj0420060] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Bailey K, Webb EC. Purification and properties of yeast pyrophosphatase. Biochem J 2006; 38:394-8. [PMID: 16747821 PMCID: PMC1258115 DOI: 10.1042/bj0380394] [Citation(s) in RCA: 100] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Bailey K, Hopkins RH. The specific rotation and stability of (2, 5)-fructose from a mathematical study of the hydrolysis of sucrose by fructosaccharase. Biochem J 2006; 27:1957-64. [PMID: 16745323 PMCID: PMC1253123 DOI: 10.1042/bj0271957] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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94
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Gutnik B, Degabriele R, Bailey K, Hudson G. Acquisition of the lateral inconsistency in involuntary behaviour of upper limbs in 12-year-old children during walking at moderate speed. HOMO-JOURNAL OF COMPARATIVE HUMAN BIOLOGY 2006; 57:51-71. [PMID: 16458730 DOI: 10.1016/j.jchb.2005.08.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2004] [Accepted: 08/30/2005] [Indexed: 10/25/2022]
Abstract
The aim of this work was to investigate possible lateralisation in the behaviour of periodic motion of the human upper limb, during normal walking at a comfortable speed of locomotion. Ten healthy pre-adolescent, strongly right-handed, 12-year-old males participated in the experiment. Participants were walking on a treadmill with a standardised velocity of 1.1m/s (comfortable speed for all of them). A video analysis system with Silicon software was used to synchronically measure various angles of arms and forearms. The initial, final and interim angular positions of both arms and forearms in 10 cycles of each participant were compared in terms of variations (cycle to cycle) between both upper extremities at corresponding phases of each cycle for distal and proximal segments, respectively. We compared the coefficients of variation in relation to the spatial and temporal data of both limbs and their angular velocities. In addition we investigated the level of cycle-to-cycle regularity (constancy) of behaviour in relation to various positions, periods and velocities of movement of upper extremities (specifically arms and forearms) using the Eta non-linear method of correlation. All participants exhibited a lower level of regularity for the distal segments. The spatial and temporal variations in the dominant limb were also greater than the non-dominant limb for all participants. This may be due to a larger contribution from the right-sided muscles that are considered to be the main contributing factor to the motion of the dominant upper limb during walking, rather than simply gravity force acting alone. A possible practical application of this information may be useful in the objective clinical identification of the level of dominance of the upper extremity (arm plus forearm), in addition to 'traditional' handedness.
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95
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Mueller P, Wang LB, Drake GWF, Bailey K, Lu ZT, O'Connor TP. Fine structure of the 1s3p 3PJ level in atomic 4He: theory and experiment. PHYSICAL REVIEW LETTERS 2005; 94:133001. [PMID: 15903989 DOI: 10.1103/physrevlett.94.133001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2004] [Indexed: 05/02/2023]
Abstract
The fine structure intervals in helium have been the focus of many theoretical and experimental studies in recent years with most of them concentrating on the 1s2p (3)P(J) levels. Here, we report on a theoretical calculation and an experimental determination of the 1s2p (3)P(J) fine structure intervals. The values from the theoretical calculation are 8113.730(6) and 658.801(6) MHz for the nu(01) and nu(12) intervals, respectively. The laser spectroscopic measurement reported here yields 8113.714(28) and 658.810(18) MHz for these intervals and is in excellent agreement with the theoretical calculation. Both, however, disagree significantly with the previous most precise experimental results.
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96
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Elwood T, Bailey K. The pediatric patient and upper respiratory infections. Best Pract Res Clin Anaesthesiol 2005; 19:35-46. [PMID: 15679057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
Children frequently present for elective surgery in the setting of an active or recent upper respiratory infection. Respiratory adverse events are increased in this setting, but the threshold for cancelling a case varies widely between clinicians. A decision to cancel surgery should take into consideration the amount of respiratory secretions during the acute illness, coexisting pulmonary disease, the requirement for intubation, and the surgical site (airway, thorax, upper abdomen-each with their potential for complications). More data are needed on the risks of proceeding with surgery in the presence of these factors and on the impact of potential therapies to decrease the incidence of adverse events. Lidocaine and other therapies that reduce laryngospasm in well patients need to be evaluated in children with upper respiratory infection.
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97
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Dohrmann F, Ahmidouch A, Armstrong CS, Arrington J, Asaturyan R, Avery S, Bailey K, Bitao H, Breuer H, Brown DS, Carlini R, Cha J, Chant N, Christy E, Cochran A, Cole L, Crowder J, Danagoulian S, Elaasar M, Ent R, Fenker H, Fujii Y, Gan L, Garrow K, Geesaman DF, Gueye P, Hafidi K, Hinton W, Juengst H, Keppel C, Liang Y, Liu JH, Lung A, Mack D, Markowitz P, Mitchell J, Miyoshi T, Mkrtchyan H, Mtingwa SK, Mueller B, Niculescu G, Niculescu I, Potterveld D, Raue BA, Reimer PE, Reinhold J, Roche J, Sarsour M, Sato Y, Segel RE, Semenov A, Stepanyan S, Tadevosian V, Tajima S, Tang L, Uzzle A, Wood S, Yamaguchi H, Yan C, Yuan L, Zeidman B, Zeier M, Zihlmann B. Angular distributions for (3,4)(Lambda)H bound states in the (3,4)He(e,e(')K+) reaction. PHYSICAL REVIEW LETTERS 2004; 93:242501. [PMID: 15697799 DOI: 10.1103/physrevlett.93.242501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2004] [Indexed: 05/24/2023]
Abstract
The (3,4)(Lambda)H and (4)(Lambda)H hypernuclear bound states have been observed for the first time in kaon electroproduction on (3,4)He targets. The production cross sections have been determined at Q(2)=0.35 GeV2 and W=1.91 GeV. For either hypernucleus the nuclear form factor is determined by comparing the angular distribution of the (3,4)He(e,e(')K+)(3,4)(Lambda)H processes to the elementary cross section 1H(e,e K+)Lambda on the free proton, measured during the same experiment.
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98
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Wilkinson JR, Summerbell CD, Macknight N, Bailey K, Chappel DB. Use of surgery to aid weight reduction-experience of two regions of Northern England: a database study. Int J Obes (Lond) 2004; 29:204-7. [PMID: 15520828 DOI: 10.1038/sj.ijo.0802833] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
OBJECTIVE To determine the usage of surgery in the management of obesity. DESIGN Analysis of routine statistics. DATA SOURCES Hospital Episode Statistics extract held by Public Health Observatories. GEOGRAPHICAL AREAS: Two Government Office Regions in England with a population of 7.6 million. TIME PERIOD: Data analysed in the study covered the 6 y 1996/1997-2001/2002. RESULTS The availability and uptake of surgery for obesity in the two regions was hugely variable. The overall utilisation of the procedures examined (OPCS operation codes: G30.1, G30.2, G32.10, G61.00) was 5.6 per million per annum, but ranged by Primary Care Trust from zero (the case in eight of the 50 PCTs in the two regions) to 24.0 operations per million per year. The rates of access to this surgery differed over six-fold between the two regions (1.4 operations per year per million population to 7.9 operations per year per million population). The PCTs with the highest rates of surgery, were those closest to the large providers of service. CONCLUSIONS Access to this intervention is highly variable. Primary Care Trusts in England and service providers need to ensure that there is appropriate access to this effective procedure in carefully selected cases. The surgical expertise required for these operations could be concentrated in fewer centres.
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99
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Wang LB, Mueller P, Bailey K, Drake GWF, Greene JP, Henderson D, Holt RJ, Janssens RVF, Jiang CL, Lu ZT, O'Connor TP, Pardo RC, Rehm KE, Schiffer JP, Tang XD. Laser spectroscopic determination of the 6He nuclear charge radius. PHYSICAL REVIEW LETTERS 2004; 93:142501. [PMID: 15524784 DOI: 10.1103/physrevlett.93.142501] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2004] [Indexed: 05/24/2023]
Abstract
We have performed precision laser spectroscopy on individual 6He (t(1/2)=0.8 s) atoms confined and cooled in a magneto-optical trap, and measured the isotope shift between 6He and 4He to be 43 194.772+/-0.056 MHz for the 2(3)S1-3(3)P2 transition. Based on this measurement and atomic theory, the nuclear charge radius of 6He is determined for the first time in a method independent of nuclear models to be 2.054+/-0.014 fm. The result is compared with the values predicted by a number of nuclear structure calculations and tests their ability to characterize this loosely bound halo nucleus.
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100
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Tian J, Shi J, Bailey K, Lendon CL, Pickering-Brown SM, Mann DMA. Association between apolipoprotein E e4 allele and arteriosclerosis, cerebral amyloid angiopathy, and cerebral white matter damage in Alzheimer's disease. J Neurol Neurosurg Psychiatry 2004; 75:696-9. [PMID: 15090562 PMCID: PMC1763560 DOI: 10.1136/jnnp.2003.012096] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
OBJECTIVE To investigate the association between white matter damage, as evidenced by myelin loss (ML), the extent of cerebral amyloid angiopathy (CAA), or arteriosclerosis (Art), and apolipoprotein E (ApoE) e4 allele in Alzheimer's disease (AD), in order to understand the causes of damage to white matter in AD and its contribution to the pathogenesis of the disorder. MATERIALS AND METHODS Brain tissues were obtained from 94 patients with AD confirmed by autopsy. ApoE genotyping was performed by PCR on DNA extracted from frontal cortex or cerebellum. CAA and Art were assessed on Weigert's haematoxylin and eosin stained sections in frontal, temporal, parietal, and occipital cortices; the extent of ML was scored on Luxol fast blue stained sections of these regions. RESULTS The ApoE e4 allele frequency in the 61 patients with ML was not significantly different from that in the 33 patients without ML, nor did this differ in the 84 patients with Art from that in the 10 patients without Art. There were no significant differences in the proportions of patients with genotypes containing 0, 1, or 2 ApoE e4 alleles in the presence or absence of ML or Art. The mean ML, Art, or CAA scores within each region, and the total scores summed across all four brain regions, did not differ between patients with 0, 1, or 2 ApoE e4 alleles. However, the mean ML severity score in the occipital cortex was significantly greater than that in the frontal or temporal cortices in patients with 1 or 2 ApoE e4 alleles. The severity of CAA in the occipital cortex was significantly higher than that in other areas of cortex in patients with 0 or 2 ApoE e4 alleles. The mean Art score in the occipital cortex was greater than that in the temporal cortex in patients with two ApoE e4 alleles and was higher than that in the frontal cortex in patients with one ApoE e4 allele. CONCLUSIONS The likelihood of patients with AD suffering from CAA, Art, or ML is not influenced by ApoE e4 allele, nor is the overall burden of these pathological changes in the brain. However, the distribution of ML, CAA, and Art within the brain is at least partly influenced by genotype and dosage of ApoE e4 allele, with the occipital cortex being more severely affected by all of these pathological changes in e4 allele bearers, particularly when two ApoE e4 alleles are present.
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