76
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Ethier-Majcher C, Joubert S, Gosselin F. Judging faces on trustworthiness and emotions. J Vis 2012. [DOI: 10.1167/12.9.33] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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77
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Dupuis-Roy N, Dufresne K, Couet-Garand A, Fiset D, Gosselin F. Low sensitivities but surprisingly high efficiencies for face-gender discrimination from interattribute distances. J Vis 2012. [DOI: 10.1167/12.9.495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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78
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Blais C, Fiset D, Roy C, Arguin M, Gosselin F. Individual differences in the visual strategies underlying facial expression categorization. J Vis 2012. [DOI: 10.1167/12.9.1283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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79
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Poirier FJAM, Gosselin F, Arguin M. Clouds are not normal occluders, and other oddities: More interactions between textures and lightness illusions. J Vis 2012; 12:12.1.21. [DOI: 10.1167/12.1.21] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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80
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Gosselin F, Savage SJ, Blaquiere N, Staben ST. Heteroarylation of Azine N-Oxides. Org Lett 2012; 14:862-5. [DOI: 10.1021/ol203388j] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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81
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Zewge D, Gosselin F, Sidler R, DiMichele L, Cvetovich RJ. A safe and practical procedure for global deprotection of oligoribonucleotides. J Org Chem 2010; 75:5305-7. [PMID: 20670035 DOI: 10.1021/jo100648e] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
We report a practical global deprotection of RNA 2'-O-tert-butyldimethylsilyl (TBS) ethers using commercially available aqueous NH(4)F. The procedure is applicable to both 96-well plate format and large-scale production of RNA. This improved procedure provides a safe, mild, and cost-effective alternative to highly hazardous Et(3)N x 3 HF, a reagent commonly used in the routine synthesis of RNA.
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82
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Gosselin F, Britton RA, Davies IW, Dolman SJ, Gauvreau D, Hoerrner RS, Hughes G, Janey J, Lau S, Molinaro C, Nadeau C, O'Shea PD, Palucki M, Sidler R. A practical synthesis of 5-lipoxygenase inhibitor MK-0633. J Org Chem 2010; 75:4154-60. [PMID: 20486715 DOI: 10.1021/jo100561u] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Practical, chromatography-free syntheses of 5-lipoxygenase inhibitor MK-0633 p-toluenesulfonate (1) are described. The first route used an asymmetric zincate addition to ethyl 2,2,2-trifluoropyruvate followed by 1,3,4-oxadiazole formation and reductive amination as key steps. An improved second route features an inexpensive diastereomeric salt resolution of vinyl hydroxy-acid 22 followed by a robust end-game featuring a through-process hydrazide acylation/1,3,4-oxadiazole ring closure/salt formation sequence to afford MK-0633 p-toluenesulfonate (1).
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83
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Gosselin F, Duval JFL, Simonet J, Ginevra C, Gaboriaud F, Jarraud S, Mathieu L. Impact of the virulence-associated MAb3/1 epitope on the physicochemical surface properties of Legionella pneumophila sg1: An issue to explain infection potential? Colloids Surf B Biointerfaces 2010; 82:283-90. [PMID: 20889314 DOI: 10.1016/j.colsurfb.2010.08.040] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2010] [Accepted: 08/26/2010] [Indexed: 11/25/2022]
Abstract
The relationship between the presence/absence of the virulence-associated MAb3/1 epitope of sixteen Legionella pneumophila serogroup 1 strains and their respective surface physicochemical properties is evidenced from electrokinetic measurements (microelectrophoresis) performed as a function of KNO(3) electrolyte concentration (range 1-100mM, pH∼6.5). Among the bacteria selected, nine original strains constitute the Dresden reference panel and differ according to the presence/absence of the virulence-associated monoclonal antibody MAb3/1 of the O-specific chain of the lipopolysaccharides (LPS). Five isogenic Lens strains, also investigated in the current study, present the epitope MAb3/1 of their LPS and were involved to some extent in the outbreak that stroke the Nord Pas-de-Calais region (France) in 2004. All bacteria exhibit the typical electrokinetic features of soft (permeable) particles. On the basis of Ohshima's model, analysis of the electrophoretic mobility data allows evaluating the intraparticular flow penetration length 1/λ(0) and the (negative) volume charge density ρ(0) that both reflect the structure and chemical composition of the soft bacterial component. Our results show that the virulent MAb3/1 positive strains are characterized on average by 1/λ(0) and ǀρ(0)ǀ values that are about 1.5 times larger and 5 times lower, respectively, than those derived for lesser virulent (MAb3/1 negative) strains. In other words, on average the soft surface layer of MAb3/1 positive strains is significantly less charged and more permeable than those of MAb3/1 negative strains. The intimate correlation between virulence-associated MAb3/1 epitope and charge density carried by the bacterial envelop was further confirmed by lower 1/λ(0) and greater ǀρ(0)ǀ values for lag-1 mutant CS332 strain, lacking the MAb3/1 epitope, compared to the parental strain AM511. A closer inspection of the dispersion in 1/λ(0) and ǀρ(0)ǀ data over the ensemble of analysed bacteria together with the reported number of Legionnaires' disease cases they are responsible for, points out the charge density ǀρ(0)ǀ as the parameter that is most suitable for discriminating highly virulent (MAb3/1 positive) from less virulent (MAb3/1 negative) strains. Although short-range interaction determines infection process, our results suggest that the infection potential of Legionella pneumophila serogroup 1 may be also controlled significantly by non-specific long-range electrostatic repulsion the bacteria undergo when approaching negatively charged host cells to be infected.
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84
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Tadros K, Fiset D, Gosselin F, Arguin M. A Medium spatial frequency trough causes letter-by-letter dyslexia in normal readers. J Vis 2010. [DOI: 10.1167/9.8.822] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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85
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Ethier-Majcher C, Blais C, Gosselin F. Timing the sound-induced flash illusion. J Vis 2010. [DOI: 10.1167/9.8.727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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86
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Tadros K, Dupuis-Roy N, Fiset D, Arguin M, Gosselin F. The use of spatial frequencies for visual word recognition in each cerebral hemisphere. J Vis 2010. [DOI: 10.1167/10.7.1324] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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87
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Blais C, Arguin M, Gosselin F. The temporal profile of visual information sampling and integration. J Vis 2010. [DOI: 10.1167/10.7.1398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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88
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Willenbockel V, Sadr J, Fiset D, Horne G, Gosselin F, Tanaka J. The SHINE toolbox for controlling low-level image properties. J Vis 2010. [DOI: 10.1167/10.7.653] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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89
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Dupuis-Roy N, Fiset D, Bourdon M, Gosselin F. The time course of face-gender discrimination: Disentangling the use of color and luminance cues. J Vis 2010. [DOI: 10.1167/10.7.689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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90
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Fiset D, Willenbockel V, Bourdon M, Arguin M, Gosselin F. The role of contour information in the spatial frequency tuning of upright and inverted faces. J Vis 2010. [DOI: 10.1167/10.7.646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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91
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Roy C, Blais C, Fiset D, Gosselin F. Visual information extraction for static and dynamic facial expression of emotions: an eye-tracking experiment. J Vis 2010. [DOI: 10.1167/10.7.531] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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92
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Hammal Z, Tsuchiya N, Adolphs R, Arguin M, Schyns P, Gosselin F. What does the activity in the amygdala and the insula correlate with in fearful and disgusted faces. J Vis 2010. [DOI: 10.1167/8.6.961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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93
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Roy S, Roy C, Fortin I, Ethier-Majcher C, Belin P, Gosselin F. A dynamic facial expression database. J Vis 2010. [DOI: 10.1167/7.9.944] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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94
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Roy S, Roy C, Hammal Z, Fiset D, Blais C, Jemel B, Gosselin F. The use of spatio-temporal Information in decoding facial expression of emotions. J Vis 2010. [DOI: 10.1167/8.6.707] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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95
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Roy C, Roy S, Fiset D, Hammal Z, Blais C, Rainville P, Gosselin F. Recognizing static and dynamic facial expressions of pain : Gaze-tracking and Bubbles experiments. J Vis 2010. [DOI: 10.1167/8.6.710] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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96
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Arguin M, Poirier FJAM, Gosselin F. Visual spread reading: Noisy letters in their natural context. J Vis 2010. [DOI: 10.1167/8.6.628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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97
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Blais C, Arguin M, Gosselin F. Visual processing oscillation fossils. J Vis 2010. [DOI: 10.1167/8.6.369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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98
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Willenbockel V, Fiset D, Arguin M, Lepore F, Gosselin F. Are the face inversion effect and the composite face effect mediated by different spatial frequencies? J Vis 2010. [DOI: 10.1167/9.8.534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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99
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Brooks DI, Lazareva OF, Gosselin F, Schyns PG, Wasserman EA. Stimulus control in categorization: An application of the bubbles procedure. J Vis 2010. [DOI: 10.1167/6.6.613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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100
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Fiset D, Blais C, Tanaka J, Arguin M, Bub D, Gosselin F. The Information subtending the other-race effect. J Vis 2010. [DOI: 10.1167/9.8.508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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