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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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Towne J, Shows D, Dinh H, Zhang Y, Dean C, Trueblood E, Bailey K, Sims J, Blumberg H. 30 Inhibition of IL-23 prevents disease in an inducible psoriatic-like mouse model. Cytokine 2008. [DOI: 10.1016/j.cyto.2008.07.071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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79
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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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81
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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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83
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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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100
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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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