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127 results on '"De Villiers, W"'

1. Revival of the magnetar PSR J1622-4950: observations with MeerKAT, Parkes, XMM-Newton, Swift, Chandra, and NuSTAR

Author

Camilo, F., Scholz, P., Serylak, M., Buchner, S., Merryfield, M., Kaspi, V. M., Archibald, R. F., Bailes, M., Jameson, A., van Straten, W., Sarkissian, J., Reynolds, J. E., Johnston, S., Hobbs, G., Abbott, T. D., Adam, R. M., Adams, G. B., Alberts, T., Andreas, R., Asad, K. M. B., Baker, D. E., Baloyi, T., Bauermeister, E. F., Baxana, T., Bennett, T. G. H., Bernardi, G., Booisen, D., Booth, R. S., Botha, D. H., Boyana, L., Brederode, L. R. S., Burger, J. P., Cheetham, T., Conradie, J., Conradie, J. P., Davidson, D. B., de Bruin, G., de Swardt, B., de Villiers, C., de Villiers, D. I. L., de Villiers, M. S., de Villiers, W., de Waal, C., Dikgale, M. A., Toit, G. du, Toit, L. J. du, Esterhuyse, S. W. P., Fanaroff, B., Fataar, S., Foley, A. R., Foster, G., Fourie, D., Gamatham, R., Gatsi, T., Geschke, R., Goedhart, S., Grobler, T. L., Gumede, S. C., Hlakola, M. J., Hokwana, A., Hoorn, D. H., Horn, D., Horrell, J., Hugo, B., Isaacson, A., Jacobs, O., van Rensburg, J. P. Jansen, Jonas, J. L., Jordaan, B., Joubert, A., Joubert, F., Jozsa, G. I. G., Julie, R., Julius, C. C., Kapp, F., Karastergiou, A., Karels, F., Kariseb, M., Karuppusamy, R., Kasper, V., Knox-Davies, E. C., Koch, D., Kotze, P. P. A., Krebs, A., Kriek, N., Kriel, H., Kusel, T., Lamoor, S., Lehmensiek, R., Liebenberg, D., Liebenberg, I., Lord, R. T., Lunsky, B., Mabombo, N., Macdonald, T., Macfarlane, P., Madisa, K., Mafhungo, L., Magnus, L. G., Magozore, C., Mahgoub, O., Main, J. P. L., Makhathini, S., Malan, J. A., Malgas, P., Manley, J. R., Manzini, M., Marais, L., Marais, N., Marais, S. J., Maree, M., Martens, A., Matshawule, S. D., Matthysen, N., Mauch, T., Nally, L. D. Mc, Merry, B., Millenaar, R. P., Mjikelo, C., Mkhabela, N., Mnyandu, N., Moeng, I. T., Mokone, O. J., Monama, T. E., Montshiwa, K., Moss, V., Mphego, M., New, W., Ngcebetsha, B., Ngoasheng, K., Niehaus, H., Ntuli, P., Nzama, A., Obies, F., Obrocka, M., Ockards, M. T., Olyn, C., Oozeer, N., Otto, A. J., Padayachee, Y., Passmoor, S., Patel, A. A., Paula, S., Peens-Hough, A., Pholoholo, B., Prozesky, P., Rakoma, S., Ramaila, A. J. T., Rammala, I., Ramudzuli, Z. R., Rasivhaga, M., Ratcliffe, S., Reader, H. C., Renil, R., Richter, L., Robyntjies, A., Rosekrans, D., Rust, A., Salie, S., Sambu, N., Schollar, C. T. G., Schwardt, L., Seranyane, S., Sethosa, G., Sharpe, C., Siebrits, R., Sirothia, S. K., Slabber, M. J., Smirnov, O., Smith, S., Sofeya, L., Songqumase, N., Spann, R., Stappers, B., Steyn, D., Steyn, T. J., Strong, R., Struthers, A., Stuart, C., Sunnylall, P., Swart, P. S., Taljaard, B., Tasse, C., Taylor, G., Theron, I. P., Thondikulam, V., Thorat, K., Tiplady, A., Toruvanda, O., van Aardt, J., van Balla, T., Heever, L. van den, van der Byl, A., van der Merwe, C., van der Merwe, P., van Niekerk, P. C., van Rooyen, R., van Staden, J. P., van Tonder, V., van Wyk, R., Wait, I., Walker, A. L., Wallace, B., Welz, M., Williams, L. P., Xaia, B., Young, N., and Zitha, S.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

New radio (MeerKAT and Parkes) and X-ray (XMM-Newton, Swift, Chandra, and NuSTAR) observations of PSR J1622-4950 indicate that the magnetar, in a quiescent state since at least early 2015, reactivated between 2017 March 19 and April 5. The radio flux density, while variable, is approximately 100x larger than during its dormant state. The X-ray flux one month after reactivation was at least 800x larger than during quiescence, and has been decaying exponentially on a 111+/-19 day timescale. This high-flux state, together with a radio-derived rotational ephemeris, enabled for the first time the detection of X-ray pulsations for this magnetar. At 5%, the 0.3-6 keV pulsed fraction is comparable to the smallest observed for magnetars. The overall pulsar geometry inferred from polarized radio emission appears to be broadly consistent with that determined 6-8 years earlier. However, rotating vector model fits suggest that we are now seeing radio emission from a different location in the magnetosphere than previously. This indicates a novel way in which radio emission from magnetars can differ from that of ordinary pulsars. The torque on the neutron star is varying rapidly and unsteadily, as is common for magnetars following outburst, having changed by a factor of 7 within six months of reactivation., Comment: Published in ApJ (2018 April 5); 13 pages, 4 figures

Published
2018
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4. Lipoprotein Receptors

Author

de Villiers, W. J. S., Coetzee, G. A., van der Westhuyzen, D. R., Schettler, Gotthard, editor, and Habenicht, Andreas J. R., editor

Published
1994
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9. Vedolizumab as Induction and Maintenance Therapy for Crohn's Disease

Author

Sandborn, Wj, Feagan, Bg, Rutgeerts, P, Hanauer, S, Colombel, Jf, Sands, Be, Lukas, M, Fedorak, Rn, Lee, S, Bressler, B, Fox, I, Rosario, M, Sankoh, S, Xu, J, Stephens, K, Milch, C, Parikh, A, Bampton P, GEMINI 2 Study G. r. o. u. p., Borody, T, Chung, A, Debinski, H, Florin, T, Hetzel, D, Jakobovits, S, Lawrance, I, Leong, R, Macrae, F, Mitchell, B, Moore, G, Pavli, P, Samuel, D, Weltman, M, Haas, T, Reinisch, W, Vogel, W, Baert, F, De Maeyer, M, De Vos, M, Dewit, O, D'Haens, G, Louis, E, Muls, V, Van Assche, G, Krastev, Z, Nikolovska, D, Petrov, P, Petrov, A, Stoinov, S, Tchernev, K, Vasileva, G, Aumais, G, Axler, J, Bailey, R, Bernstein, C, Bitton, A, Bourdages, R, Cohen, A, Devroede, G, Dhalla, S, Feagan, B, Fedorak, R, Green, D, Greenberg, G, Jones, J, Larkai, E, Macintosh, D, Panaccione, R, Ponich, T, Singh, R, Sy, R, Wiesinger, H, Albin, A, Douda, L, Horny, I, Stehlik, J, Stuksa, J, Volfova, M, Vyhnalek, P, Zadorova, Z, Andersen, V, Bendtsen, F, Fallingborg, J, Rannem, T, Maelt, A, Margus, B, Salupere, R, Allez, M, Des Varennes SB, Desreumaux, P, Dupas, Jl, Grimaud, Jc, Hebuterne, X, Lerebours, E, Picon, L, Zerbib, F, Aldinger, V, Baumgart, D, Buening, C, Dollinger, M, Hoffmann, P, Howaldt, S, Klaus, J, Konturek, Jw, Krummenerl, T, Malfertheiner, P, Schmidt, W, Schreiber, S, Seidler, U, Stallmach, A, Stremmel, W, Zeitz, M, Mantzaris, G, Triantafyllou, K, Ng, C, Bene, L, Fazekas, I, Fejes, R, Gall, J, Horvat, G, Hunyady, B, Salamon, A, Toth, T, Tulassay, Z, Varga, E, Varga, M, Varga Szabo, L, Vincze, A, Oddsson, E, Örvar, K, Ahuja, V, Amarapurkar, D, Chandra, A, Koshy, A, Krishna, P, Ramakrishna, K, Reddy, N, Thorat, V, Patchett, S, Ryan, B, Ben Horin, S, Fishman, S, Lavy, A, Rachmilewitz, D, Ardizzone, S, Corazziari, E, Danese, S, Fries, Walter, Gasbarrini, A, Kohn, A, Sturniolo, Gc, Danilans, A, George, Am, Hilmi, In, Engels, Lg, Ponsioen, Cy, van der Woude CJ, Gearry, R, Haines, M, Schultz, M, Wallace, I, Wyeth, J, Florholmen, J, Jahnsen, J, Lygren, I, Röseth, A, Ciecko Michalska, I, Gonciarz, M, Horynski, M, Huk, J, Jamrozik Kruk, Z, Janke, A, Klupinska, G, Marecik, J, Paradowski, L, Rudzinski, J, Rydzewska, G, Han, Ds, Hong, Sp, Kim, Hj, Kim, Js, Kim, Ko, Kim, Yh, Yang, Sk, Gheorghe, Ls, Voiosu, Rm, Alexeeva, O, Baranovsky, A, Bunkova, E, Burnevich, E, Dolgikh, O, Grinevich, V, Lakhin, A, Tarabar, D, Ling, Kl, Bunganic, I, Cernok, S, Gregus, M, Coetzer, T, Grundling, H, Moola, Sa, Wright, Jp, Ziady, C, Bermejo, F, Calvet, X, Herrerias, Jm, Perez Calle JL, Perez Gisbert, J, Hertervig, E, Karlen, P, Michetti, P, Rogler, G, Seibold, F, Wu, Dc, Atug, O, Kurdas, Oo, Datsenko, O, Dorofyeyev, A, Dudar, L, Golovchenko, O, Klyarits'Ka, I, Skrypnyk, I, Hawthorne, Ab, Middleton, S, Abreu, M, Bala, N, Becker, S, Behm, B, Braun, R, Bukhari, M, Chen, S, Coates, A, Dar, S, Dassopoulos, T, De Villiers, W, Desautels, S, Desta, T, Dimitroff, J, Dryden, G, Duvall, A, Farraye, F, Fein, S, Liu, Bf, Gatof, D, Geenen, D, Ginsburg, P, Glombicki, A, Glover, S, Gordon, G, Grisolano, S, Hanson, J, Hardi, R, Hoffman, B, Isaacs, K, Kim, C, Koval, G, Lashner, B, Lawitz, E, Leman, B, Levine, J, Loftus, E, Mahadevan, U, Mannon, P, Marcet, J, Matsuyama, R, Matusow, G, Mccabe, R, Mirkin, K, Murphy, M, Mushahwar, A, Mutlu, E, Nagrani, M, Nguyen, D, Nichols, M, Nieves Ramirez, A, Oubre, B, Pace, S, Pandak, W, Perera, L, Quadri, A, Quallich, L, Rajapakse, R, Randall, C, Regueiro, M, Safdi, A, Sandborn, W, Sands, B, Saubermann, L, Scherl, E, Schwartz, D, Sedghi, S, Shafran, I, Shepard, R, Siegel, C, Stein, L, Tatum, H, Triebling, A, Vasudeva, R, Winston, B, Wolf, D, Younes, Z, Jewell, D, Mahon, J, Rothstein, R, Snydman, D, Massaro, J, Clifford, D, Berger, J, Major, E, Provenzale, J, Lev, M., GEMINI 2 Study Group, Bampton, P., Borody, T., Chung, A., Debinski, H., Florin, T., Hetzel, D., Jakobovits, S., Lawrance, I., Leong, R., Macrae, F., Mitchell, B., Moore, G., Pavli, P., Samuel, D., Weltman, M., Haas, T., Reinisch, W., Vogel, W., Baert, F., De Maeyer, M., De Vos, M., Dewit, O., D'Haens, G., Louis, E., Muls, V., Van Assche, G., Krastev, Z., Nikolovska, D., Petrov, P., Petrov, A., Stoinov, S., Tchernev, K., Vasileva, G., Aumais, G., Axler, J., Bailey, R., Bernstein, C., Bitton, A., Bourdages, R., Bressler, B., Cohen, A., Devroede, G., Dhalla, S., Feagan, B., Fedorak, R., Green, D., Greenberg, G., Jones, J., Larkai, E., MacIntosh, D., Panaccione, R., Ponich, T., Singh, R., Sy, R., Wiesinger, H., Albin, A., Douda, L., Horny, I., Lukas, M., Stehlik, J., Stuksa, J., Volfova, M., Vyhnalek, P., Zadorova, Z., Andersen, V., Bendtsen, F., Fallingborg, J., Rannem, T., Maelt, A., Margus, B., Salupere, R., Allez, M., Des Varennes SB., Desreumaux, P., Dupas, JL., Grimaud, JC., Hebuterne, X., Lerebours, E., Picon, L., Zerbib, F., Aldinger, V., Baumgart, D., Buening, C., Dollinger, M., Hoffmann, P., Howaldt, S., Klaus, J., Konturek, JW., Krummenerl, T., Malfertheiner, P., Schmidt, W., Schreiber, S., Seidler, U., Stallmach, A., Stremmel, W., Zeitz, M., Mantzaris, G., Triantafyllou, K., Ng, C., Bene, L., Fazekas, I., Fejes, R., Gall, J., Horvat, G., Hunyady, B., Salamon, A., Toth, T., Tulassay, Z., Varga, E., Varga, M., Varga-Szabo, L., Vincze, A., Oddsson, E., Örvar, K., Ahuja, V., Amarapurkar, D., Chandra, A., Koshy, A., Krishna, P., Ramakrishna, K., Reddy, N., Thorat, V., Patchett, S., Ryan, B., Ben Horin, S., Fishman, S., Lavy, A., Rachmilewitz, D., Ardizzone, S., Corazziari, E., Danese, S., Fries, W., Gasbarrini, A., Kohn, A., Sturniolo, GC., Danilans, A., George, AM., Hilmi, IN., Engels, LG., Ponsioen, CY., van der Woude CJ., Gearry, R., Haines, M., Schultz, M., Wallace, I., Wyeth, J., Florholmen, J., Jahnsen, J., Lygren, I., Röseth, A., Ciecko-Michalska, I., Gonciarz, M., Horynski, M., Huk, J., Jamrozik-Kruk, Z., Janke, A., Klupinska, G., Marecik, J., Paradowski, L., Rudzinski, J., Rydzewska, G., Han, DS., Hong, SP., Kim, HJ., Kim, JS., Kim, KO., Kim, YH., Yang, SK., Gheorghe, LS., Voiosu, RM., Alexeeva, O., Baranovsky, A., Bunkova, E., Burnevich, E., Dolgikh, O., Grinevich, V., Lakhin, A., Tarabar, D., Ling, KL., Bunganic, I., Cernok, S., Gregus, M., Coetzer, T., Grundling, H., Moola, SA., Wright, JP., Ziady, C., Bermejo, F., Calvet, X., Herrerias, JM., Perez Calle JL., Perez Gisbert, J., Hertervig, E., Karlen, P., Michetti, P., Rogler, G., Seibold, F., Wu, DC., Atug, O., Kurdas, OO., Datsenko, O., Dorofyeyev, A., Dudar, L., Golovchenko, O., Klyarits'ka, I., Skrypnyk, I., Hawthorne, AB., Middleton, S., Abreu, M., Bala, N., Becker, S., Behm, B., Braun, R., Bukhari, M., Chen, S., Coates, A., Dar, S., Dassopoulos, T., De Villiers, W., Desautels, S., Desta, T., Dimitroff, J., Dryden, G., Duvall, A., Farraye, F., Fein, S., Liu, BF., Gatof, D., Geenen, D., Ginsburg, P., Glombicki, A., Glover, S., Gordon, G., Grisolano, S., Hanauer, S., Hanson, J., Hardi, R., Hoffman, B., Isaacs, K., Kim, C., Koval, G., Lashner, B., Lawitz, E., Lee, S., Leman, B., Levine, J., Loftus, E., Mahadevan, U., Mannon, P., Marcet, J., Matsuyama, R., Matusow, G., McCabe, R., Mirkin, K., Murphy, M., Mushahwar, A., Mutlu, E., Nagrani, M., Nguyen, D., Nichols, M., Nieves Ramirez, A., Oubre, B., Pace, S., Pandak, W., Perera, L., Quadri, A., Quallich, L., Rajapakse, R., Randall, C., Regueiro, M., Safdi, A., Sandborn, W., Sands, B., Saubermann, L., Scherl, E., Schwartz, D., Sedghi, S., Shafran, I., Shepard, R., Siegel, C., Stein, L., Tatum, H., Triebling, A., Vasudeva, R., Winston, B., Wolf, D., Younes, Z., Feagan, BG., Colombel, JF., Rutgeerts, P., Sandborn, WJ., Sands, BE., Jewell, D., Mahon, J., Rothstein, R., Snydman, D., Massaro, J., Clifford, D., Berger, J., Major, E., Provenzale, J., Lev, M., and Medical Microbiology & Infectious Diseases

Subjects
Adult, Male, Integrins, medicine.medical_specialty, HUMAN POLYOMAVIRUSES, JC, Antibodies/blood, Antibodies, Monoclonal, Humanized/adverse effects, Antibodies, Monoclonal, Humanized/immunology, Crohn Disease/drug therapy, Double-Blind Method, Drug Administration Schedule, Drug Therapy, Combination, Female, Glucocorticoids/therapeutic use, Humans, Immunosuppressive Agents/therapeutic use, Induction Chemotherapy, Infusions, Intravenous/adverse effects, Integrins/antagonists & inhibitors, Integrins/immunology, Maintenance Chemotherapy, Middle Aged, PROGRESSIVE MULTIFOCAL LEUKOENCEPHALOPATHY, Antibodies, Monoclonal, Humanized, Placebo, Gastroenterology, Inflammatory bowel disease, Antibodies, Vedolizumab, CERTOLIZUMAB PEGOL, Natalizumab, Crohn Disease, Maintenance therapy, HUMANIZED ANTIBODY, Internal medicine, Ustekinumab, medicine, Certolizumab pegol, Infusions, Intravenous, Glucocorticoids, NATALIZUMAB, business.industry, Induction chemotherapy, General Medicine, medicine.disease, PROGRESSIVE MULTIFOCAL LEUKOENCEPHALOPATHY, RELAPSING MULTIPLE-SCLEROSIS, INFLAMMATORY-BOWEL-DISEASE, HUMAN POLYOMAVIRUSES, HUMANIZED ANTIBODY, CERTOLIZUMAB PEGOL, ULCERATIVE-COLITIS, RANDOMIZED-TRIAL, NATALIZUMAB, JC, RANDOMIZED-TRIAL, digestive system diseases, Surgery, ULCERATIVE-COLITIS, RELAPSING MULTIPLE-SCLEROSIS, business, Immunosuppressive Agents, INFLAMMATORY-BOWEL-DISEASE, medicine.drug
Abstract

BACKGROUND: The efficacy of vedolizumab, an α4β7 integrin antibody, in Crohn's disease is unknown. METHODS: In an integrated study with separate induction and maintenance trials, we assessed intravenous vedolizumab therapy (300 mg) in adults with active Crohn's disease. In the induction trial, 368 patients were randomly assigned to receive vedolizumab or placebo at weeks 0 and 2 (cohort 1), and 747 patients received open-label vedolizumab at weeks 0 and 2 (cohort 2); disease status was assessed at week 6. In the maintenance trial, 461 patients who had had a response to vedolizumab were randomly assigned to receive placebo or vedolizumab every 8 or 4 weeks until week 52. RESULTS: At week 6, a total of 14.5% of the patients in cohort 1 who received vedolizumab and 6.8% who received placebo were in clinical remission (i.e., had a score on the Crohn's Disease Activity Index [CDAI] of ≤150, with scores ranging from 0 to approximately 600 and higher scores indicating greater disease activity) (P=0.02); a total of 31.4% and 25.7% of the patients, respectively, had a CDAI-100 response (≥100-point decrease in the CDAI score) (P=0.23). Among patients in cohorts 1 and 2 who had a response to induction therapy, 39.0% and 36.4% of those assigned to vedolizumab every 8 weeks and every 4 weeks, respectively, were in clinical remission at week 52, as compared with 21.6% assigned to placebo (P

Published
2013

10. Long-term efficacy and safety of ustekinumab for Crohn's disease through the second year of therapy

Author

Sandborn, W. J., primary, Rutgeerts, P., additional, Gasink, C., additional, Jacobstein, D., additional, Zou, B., additional, Johanns, J., additional, Sands, B. E., additional, Hanauer, S. B., additional, Targan, S., additional, Ghosh, S., additional, de Villiers, W. J. S., additional, Colombel, J.-F., additional, and Feagan, B. G., additional

Published
2018
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13. Cytokine and growth factor regulation of murine macrophage scavenger receptor expression and function

Author

De Villiers, W, Villiers, Willem Johan Simon de, and Gordon, S

Subjects
Macrophages, Cytokines, Growth factors
Abstract

The macrophage (Mφ) foam cell in the atherosclerotic plaque microenvironment is subjected to cytokines and growth factors secreted by smooth muscle cells (SMCs), endothelial cells (ECs), platelets and lesional Mφ themselves. This thesis examines the effects of some of these soluble factors on a murine macrophage membrane molecule, the macrophage scavenger receptor (MSR), considered pivotal in foam cell formation and atherogenesis. Macrophage Colony-stimulating factor (MCSF) enhances MSR expression and functional activity (including MSR-dependent adhesion) in elicited peritoneal Mφ markedly and selectively. The T lymphocyte products, Th1 (interferon-gamma(IFN-γ)) and Th2 (chiefly interleukin-4 (IL-4)) cytokines, have divergent effects with IL-4 upregulating and IFN-γ either maintaining or downregulating MSR status. IL-4 induced MSR microheterogeneity is due to changes in N-linked glycosylation, specifically sialylation and may be physiologically significant. In contrast to interleukin-10 (IL-10), transforming growth factor-beta (TGF-β) inhibits MSR upregulation, also when produced endogenously. TGF-β is as potent an inhibitor of MSR function as M-CSF is a stimulator. A cleaved truncated soluble form of MSR which lacks the cytoplasmic domain is present, by immunochemical assays, in culture supernatants. M-CSF increases soluble MSR release in vitro which is functionally active. Following upregulation of MSR surface expression in transfected CHO cells by prolonged culture, a modest MSR-dependent contribution to adhesion becomes apparent. To determine a possible adhesionpromoting region in the MSR, the binding site of mAb 2F8 was mapped using a series of MSR truncation mutants, and localized to residues 183 to 197 in the proximal cchelical coiled-coil domain. Morphological evidence, obtained by confocal and electron microscopy, supports an adhesion role for the MSR in primary Mφ and transfected CHO cells. MSR expression is prominently directed to the adherent surface and its distribution is restricted to cellular contact areas with the substratum. Organs and atherosclerotic lesions from mice deficient in M-CSF (osteopetrotic) and apolipoprotein E were examined to determine the effects of M-CSF on Mφ phenotype (including MSR expression) and lesion development in vivo. Though severely hypercholesterolemic, doubly deficient mice are protected against atherosclerosis and exhibit fewer Mφ and low MSR expression on remaining M-CSF independent populations. Prominent hepatic lipid accumulation suggests a crucial M-CSF dependent role for Kupffer cells in lipoprotein uptake, transfer to hepatocytes and biliary excretion of cholesterol. Regulation of MSR activity may therefore be important for the recruitment of Mφ into the arterial wall and, at the post-endothelial stage, to anchor Mφ at specific locations, thus favouring foam cell formation.

Published
2016

14. The future - challenges and opportunities for universities and health care.

Author

de Villiers, W. J. S.

Subjects
*MEDICAL care, *MEDICAL informatics, *DECISION support systems, *WORLD Wide Web
Abstract

In this article the author talks about future challenges and opportunities for universities and health care. Topics include legacy is to build the best possible higher education and health-care systems for the future; technological advances, economic forces, demographic shifts and various other social factors mean universities are ripe for disruption; and the knowledge economy of the 21st century includes complexity awareness, creativity, agility and continuous learning.

Published
2019

15. OC-005 A Multicenter, Double-Blind, Placebo (PBO)-Controlled Ph3 Study of Ustekinumab (UST), A Human IL-12/23P40 MAB, in Moderate-Severe Crohn’s Disease (CD) Refractory to anti-TNFΑ: UNITI-1

Author

Rutgeerts, P, primary, Gasink, C, additional, Blank, M, additional, Lang, Y, additional, Johanns, J, additional, Gao, L-L, additional, Sands, B, additional, Hanauer, S, additional, Feagan, B, additional, Targan, S, additional, Ghosh, S, additional, de Villiers, W, additional, Colombel, J-F, additional, Lee, SD, additional, Desreumaux, P, additional, Loftus, EV, additional, Vermeire, S, additional, and Sandborn, WJ, additional

Published
2016
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16. OC-007 A Multicenter, Double-Blind, Placebo (PBO)-Controlled Ph3 Study of Ustekinumab (UST), A’Human MAB to IL-12/23P40, IN PTS with Moderately-Severely Active Crohn’s Disease (CD) Who are Naïve or not Refractory to anti-TNFΑ: UNITI-2: Abstract OC-007 Table 1

Author

Feagan, B, primary, Gasink, C, additional, Lang, Y, additional, Friedman, JR, additional, Johanns, J, additional, Gao, L-L, additional, Sands, B, additional, Hanauer, S, additional, Rutgeerts, P, additional, Targan, S, additional, Ghosh, S, additional, de Villiers, W, additional, Colombel, J-F, additional, Tulassay, Z, additional, Seidler, U, additional, and Sandborn, WJ, additional

Published
2016
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17. Vedolizumab as induction and maintenance therapy for ulcerative colitis

Author

Feagan, Bg, Rutgeerts, P, Sands, Be, Hanauer, S, Colombel, Jf, Sandborn, Wj, Van Assche, G, Axler, J, Kim, Hj, Danese, S, Fox, I, Milch, C, Sankoh, S, Wyant, T, Xu, J, Parikh, A, Bampton P, GEMINI 1 Study G. r. o. u. p., Chung, A, Debinski, H, Florin, T, Hetzel, D, Kronborg, I, Lawrance, I, Leong, R, Macrae, F, Moore, G, Pavli, P, Radford Smith, G, Weltman, M, Haas, T, Reinisch, W, Stockenhuber, F, Vogel, W, De Maeyer, M, De Vos, M, D'Haens, G, Louis, E, Muls, V, Petrov, P, Aumais, G, Bitton, A, Bourdages, R, Bressler, B, Cohen, A, Fedorak, R, Greenberg, G, Jones, J, Kutcher, W, Macintosh, D, Ponich, T, Singh, R, Steinhart, H, Sy, R, Douda, L, Lukas, M, Samek, M, Vyhnalek, P, Woznica, V, Zadorova, Z, Andersen, V, Rannem, T, Staun, M, Maelt, A, Margus, B, Bonaz, B, Coffin, B, Desreumaux, P, Laharie, D, Reimund, Jm, Karaus, M, Pace, A, Ross, M, Schmidt, W, Witthoeft, T, Zeitz, M, Karamanolis, D, Mantzaris, G, Maris, T, Ng, C, Gall, J, Hunyady, B, Szepes, A, Toth, T, Vincze, A, Oddsson, E, Jósefsspktali, Kö, Ahuja, V, Amarapurkar, D, Goenka, M, Habeeb, Ma, Jalihal, U, Kalambe, B, Koshy, A, Kumar, R, Prasad, V, Reddy, N, Sekar, T, Shankar, R, Tantry, V, Ryan, B, Avni, Y, Ben Horin, S, Ardizzone, S, Armuzzi, A, Corazziari, E, Fries, Walter, Kohn, A, Lisova, D, George, Am, Hilmi, In, Bhaskaran, Sk, Soon, Sy, Engels, L, Ponsioen, C, Wallace, I, Wyeth, J, Florholmen, J, Jahnsen, J, Lygren, I, Röseth, A, Ciecko Michalska, I, Gonciarz, M, Huk, J, Jamrozik Kruk, Z, Kondusz Szklarz, M, Paradowski, L, Wiechowska Kozlowska, A, Han, Ds, Hong, Sp, Kim, Js, Kim, Ko, Kim, Yh, Yang, Sk, Alexeeva, O, Bunkova, E, Burnevich, E, Dolgikh, O, Kasherininova, I, Khovaeva, Y, Lakhin, A, Ling, Kl, Bester, F, Coetzer, T, Grundling Hde, K, Jackson, Ld, Spies, P, Wright, Jp, Ziady, C, Garcia Planella, E, Perez Gisbert, J, Rogler, G, Seibold, F, Kao, Aw, Wu, Dc, Atug, O, Kurdas, Oo, Hawthorne, Ab, Lindsay, J, Abreu, M, Aggarwal, A, Bala, N, Becker, S, Behm, B, Braun, R, Cohn, W, Cross, R, Dar, S, Dassopoulos, T, De Villiers, W, Desta, T, Dryden, G, Duvall, A, Farraye, F, Fein, S, Liu, Bf, Gatof, D, Geenen, D, Ginsburg, P, Glover, S, Gopal, V, Hanson, J, Hardi, R, Isaacs, K, Jain, R, Karyotakis, N, Korzenik, J, Koshy, G, Koval, G, Lawitz, E, Lee, S, Loftus, E, Luther, R, Mahadevan, U, Mannon, P, Matsuyama, R, Mcintosh, A, Melmed, G, Mirkin, K, Nichols, M, Oubre, B, Pandak, W, Quadri, A, Quallich, L, Randall, C, Rausher, D, Regueiro, M, Safdi, A, Sands, B, Scherl, E, Schneier, J, Schwartz, D, Sedghi, S, Shafran, I, Siegel, C, Stein, L, Tatum, H, Weinberg, D, Winston, B, Wolf, D, Younes, Z, Jewell, D, Mahon, J, Rothstein, R, Snydman, D, Massaro, J, Clifford, D, Berger, J, Major, E, Provenzale, J, Abstract, Lev M., Feagan, Bg, Rutgeerts, P, Sands, Be, Hanauer, S, Colombel, Jf, Sandborn, Wj, Van Assche, G, Axler, J, Kim, Hj, Danese, S, Fox, I, Milch, C, Sankoh, S, Wyant, T, Xu, J, and Parikh, A

Subjects
Adult, Male, medicine.medical_specialty, Integrins, Placebo, Antibodies, Monoclonal, Humanized, Drug Administration Schedule, law.invention, Vedolizumab, Maintenance Chemotherapy, Maintenance therapy, Randomized controlled trial, Double-Blind Method, law, Internal medicine, medicine, Humans, Glucocorticoids, Aged, business.industry, General Medicine, Induction Chemotherapy, Middle Aged, medicine.disease, Ulcerative colitis, Infliximab, Surgery, Clinical trial, Cohort, Colitis, Ulcerative, Drug Therapy, Combination, Female, business, Immunosuppressive Agents, medicine.drug
Abstract

Gut-selective blockade of lymphocyte trafficking by vedolizumab may constitute effective treatment for ulcerative colitis.We conducted two integrated randomized, double-blind, placebo-controlled trials of vedolizumab in patients with active disease. In the trial of induction therapy, 374 patients (cohort 1) received vedolizumab (at a dose of 300 mg) or placebo intravenously at weeks 0 and 2, and 521 patients (cohort 2) received open-label vedolizumab at weeks 0 and 2, with disease evaluation at week 6. In the trial of maintenance therapy, patients in either cohort who had a response to vedolizumab at week 6 were randomly assigned to continue receiving vedolizumab every 8 or 4 weeks or to switch to placebo for up to 52 weeks. A response was defined as a reduction in the Mayo Clinic score (range, 0 to 12, with higher scores indicating more active disease) of at least 3 points and a decrease of at least 30% from baseline, with an accompanying decrease in the rectal bleeding subscore of at least 1 point or an absolute rectal bleeding subscore of 0 or 1.Response rates at week 6 were 47.1% and 25.5% among patients in the vedolizumab group and placebo group, respectively (difference with adjustment for stratification factors, 21.7 percentage points; 95% confidence interval [CI], 11.6 to 31.7; P0.001). At week 52, 41.8% of patients who continued to receive vedolizumab every 8 weeks and 44.8% of patients who continued to receive vedolizumab every 4 weeks were in clinical remission (Mayo Clinic score ≤2 and no subscore1), as compared with 15.9% of patients who switched to placebo (adjusted difference, 26.1 percentage points for vedolizumab every 8 weeks vs. placebo [95% CI, 14.9 to 37.2; P0.001] and 29.1 percentage points for vedolizumab every 4 weeks vs. placebo [95% CI, 17.9 to 40.4; P0.001]). The frequency of adverse events was similar in the vedolizumab and placebo groups.Vedolizumab was more effective than placebo as induction and maintenance therapy for ulcerative colitis. (Funded by Millennium Pharmaceuticals; GEMINI 1 ClinicalTrials.gov number, NCT00783718.).

Published
2013

18. Vedolizumab as induction and maintenance therapy for Crohn's disease.

Author

GEMINI 2 Study Group, Bampton, P., Borody, T., Chung, A., Debinski, H., Florin, T., Hetzel, D., Jakobovits, S., Lawrance, I., Leong, R., Macrae, F., Mitchell, B., Moore, G., Pavli, P., Samuel, D., Weltman, M., Haas, T., Reinisch, W., Vogel, W., Baert, F., De Maeyer, M., De Vos, M., Dewit, O., D'Haens, G., Louis, E., Muls, V., Van Assche, G., Krastev, Z., Nikolovska, D., Petrov, P., Petrov, A., Stoinov, S., Tchernev, K., Vasileva, G., Aumais, G., Axler, J., Bailey, R., Bernstein, C., Bitton, A., Bourdages, R., Bressler, B., Cohen, A., Devroede, G., Dhalla, S., Feagan, B., Fedorak, R., Green, D., Greenberg, G., Jones, J., Larkai, E., MacIntosh, D., Panaccione, R., Ponich, T., Singh, R., Sy, R., Wiesinger, H., Albin, A., Douda, L., Horny, I., Lukas, M., Stehlik, J., Stuksa, J., Volfova, M., Vyhnalek, P., Zadorova, Z., Andersen, V., Bendtsen, F., Fallingborg, J., Rannem, T., Maelt, A., Margus, B., Salupere, R., Allez, M., Des Varennes SB., Desreumaux, P., Dupas, JL., Grimaud, JC., Hebuterne, X., Lerebours, E., Picon, L., Zerbib, F., Aldinger, V., Baumgart, D., Buening, C., Dollinger, M., Hoffmann, P., Howaldt, S., Klaus, J., Konturek, JW., Krummenerl, T., Malfertheiner, P., Schmidt, W., Schreiber, S., Seidler, U., Stallmach, A., Stremmel, W., Zeitz, M., Mantzaris, G., Triantafyllou, K., Ng, C., Bene, L., Fazekas, I., Fejes, R., Gall, J., Horvat, G., Hunyady, B., Salamon, A., Toth, T., Tulassay, Z., Varga, E., Varga, M., Varga-Szabo, L., Vincze, A., Oddsson, E., Örvar, K., Ahuja, V., Amarapurkar, D., Chandra, A., Koshy, A., Krishna, P., Ramakrishna, K., Reddy, N., Thorat, V., Patchett, S., Ryan, B., Ben Horin, S., Fishman, S., Lavy, A., Rachmilewitz, D., Ardizzone, S., Corazziari, E., Danese, S., Fries, W., Gasbarrini, A., Kohn, A., Sturniolo, GC., Danilans, A., George, AM., Hilmi, IN., Engels, LG., Ponsioen, CY., van der Woude CJ., Gearry, R., Haines, M., Schultz, M., Wallace, I., Wyeth, J., Florholmen, J., Jahnsen, J., Lygren, I., Röseth, A., Ciecko-Michalska, I., Gonciarz, M., Horynski, M., Huk, J., Jamrozik-Kruk, Z., Janke, A., Klupinska, G., Marecik, J., Paradowski, L., Rudzinski, J., Rydzewska, G., Han, DS., Hong, SP., Kim, HJ., Kim, JS., Kim, KO., Kim, YH., Yang, SK., Gheorghe, LS., Voiosu, RM., Alexeeva, O., Baranovsky, A., Bunkova, E., Burnevich, E., Dolgikh, O., Grinevich, V., Lakhin, A., Tarabar, D., Ling, KL., Bunganic, I., Cernok, S., Gregus, M., Coetzer, T., Grundling, H., Moola, SA., Wright, JP., Ziady, C., Bermejo, F., Calvet, X., Herrerias, JM., Perez Calle JL., Perez Gisbert, J., Hertervig, E., Karlen, P., Michetti, P., Rogler, G., Seibold, F., Wu, DC., Atug, O., Kurdas, OO., Datsenko, O., Dorofyeyev, A., Dudar, L., Golovchenko, O., Klyarits'ka, I., Skrypnyk, I., Hawthorne, AB., Middleton, S., Abreu, M., Bala, N., Becker, S., Behm, B., Braun, R., Bukhari, M., Chen, S., Coates, A., Dar, S., Dassopoulos, T., De Villiers, W., Desautels, S., Desta, T., Dimitroff, J., Dryden, G., Duvall, A., Farraye, F., Fein, S., Liu, BF., Gatof, D., Geenen, D., Ginsburg, P., Glombicki, A., Glover, S., Gordon, G., Grisolano, S., Hanauer, S., Hanson, J., Hardi, R., Hoffman, B., Isaacs, K., Kim, C., Koval, G., Lashner, B., Lawitz, E., Lee, S., Leman, B., Levine, J., Loftus, E., Mahadevan, U., Mannon, P., Marcet, J., Matsuyama, R., Matusow, G., McCabe, R., Mirkin, K., Murphy, M., Mushahwar, A., Mutlu, E., Nagrani, M., Nguyen, D., Nichols, M., Nieves Ramirez, A., Oubre, B., Pace, S., Pandak, W., Perera, L., Quadri, A., Quallich, L., Rajapakse, R., Randall, C., Regueiro, M., Safdi, A., Sandborn, W., Sands, B., Saubermann, L., Scherl, E., Schwartz, D., Sedghi, S., Shafran, I., Shepard, R., Siegel, C., Stein, L., Tatum, H., Triebling, A., Vasudeva, R., Winston, B., Wolf, D., Younes, Z., Feagan, BG., Colombel, JF., Rutgeerts, P., Sandborn, WJ., Sands, BE., Jewell, D., Mahon, J., Rothstein, R., Snydman, D., Massaro, J., Clifford, D., Berger, J., Major, E., Provenzale, J., Lev, M., Sandborn, W.J., Feagan, B.G., Colombel, J.F., Sands, B.E., Fedorak, R.N., Fox, I., Rosario, M., Sankoh, S., Xu, J., Stephens, K., Milch, C., Parikh, A., GEMINI 2 Study Group, Bampton, P., Borody, T., Chung, A., Debinski, H., Florin, T., Hetzel, D., Jakobovits, S., Lawrance, I., Leong, R., Macrae, F., Mitchell, B., Moore, G., Pavli, P., Samuel, D., Weltman, M., Haas, T., Reinisch, W., Vogel, W., Baert, F., De Maeyer, M., De Vos, M., Dewit, O., D'Haens, G., Louis, E., Muls, V., Van Assche, G., Krastev, Z., Nikolovska, D., Petrov, P., Petrov, A., Stoinov, S., Tchernev, K., Vasileva, G., Aumais, G., Axler, J., Bailey, R., Bernstein, C., Bitton, A., Bourdages, R., Bressler, B., Cohen, A., Devroede, G., Dhalla, S., Feagan, B., Fedorak, R., Green, D., Greenberg, G., Jones, J., Larkai, E., MacIntosh, D., Panaccione, R., Ponich, T., Singh, R., Sy, R., Wiesinger, H., Albin, A., Douda, L., Horny, I., Lukas, M., Stehlik, J., Stuksa, J., Volfova, M., Vyhnalek, P., Zadorova, Z., Andersen, V., Bendtsen, F., Fallingborg, J., Rannem, T., Maelt, A., Margus, B., Salupere, R., Allez, M., Des Varennes SB., Desreumaux, P., Dupas, JL., Grimaud, JC., Hebuterne, X., Lerebours, E., Picon, L., Zerbib, F., Aldinger, V., Baumgart, D., Buening, C., Dollinger, M., Hoffmann, P., Howaldt, S., Klaus, J., Konturek, JW., Krummenerl, T., Malfertheiner, P., Schmidt, W., Schreiber, S., Seidler, U., Stallmach, A., Stremmel, W., Zeitz, M., Mantzaris, G., Triantafyllou, K., Ng, C., Bene, L., Fazekas, I., Fejes, R., Gall, J., Horvat, G., Hunyady, B., Salamon, A., Toth, T., Tulassay, Z., Varga, E., Varga, M., Varga-Szabo, L., Vincze, A., Oddsson, E., Örvar, K., Ahuja, V., Amarapurkar, D., Chandra, A., Koshy, A., Krishna, P., Ramakrishna, K., Reddy, N., Thorat, V., Patchett, S., Ryan, B., Ben Horin, S., Fishman, S., Lavy, A., Rachmilewitz, D., Ardizzone, S., Corazziari, E., Danese, S., Fries, W., Gasbarrini, A., Kohn, A., Sturniolo, GC., Danilans, A., George, AM., Hilmi, IN., Engels, LG., Ponsioen, CY., van der Woude CJ., Gearry, R., Haines, M., Schultz, M., Wallace, I., Wyeth, J., Florholmen, J., Jahnsen, J., Lygren, I., Röseth, A., Ciecko-Michalska, I., Gonciarz, M., Horynski, M., Huk, J., Jamrozik-Kruk, Z., Janke, A., Klupinska, G., Marecik, J., Paradowski, L., Rudzinski, J., Rydzewska, G., Han, DS., Hong, SP., Kim, HJ., Kim, JS., Kim, KO., Kim, YH., Yang, SK., Gheorghe, LS., Voiosu, RM., Alexeeva, O., Baranovsky, A., Bunkova, E., Burnevich, E., Dolgikh, O., Grinevich, V., Lakhin, A., Tarabar, D., Ling, KL., Bunganic, I., Cernok, S., Gregus, M., Coetzer, T., Grundling, H., Moola, SA., Wright, JP., Ziady, C., Bermejo, F., Calvet, X., Herrerias, JM., Perez Calle JL., Perez Gisbert, J., Hertervig, E., Karlen, P., Michetti, P., Rogler, G., Seibold, F., Wu, DC., Atug, O., Kurdas, OO., Datsenko, O., Dorofyeyev, A., Dudar, L., Golovchenko, O., Klyarits'ka, I., Skrypnyk, I., Hawthorne, AB., Middleton, S., Abreu, M., Bala, N., Becker, S., Behm, B., Braun, R., Bukhari, M., Chen, S., Coates, A., Dar, S., Dassopoulos, T., De Villiers, W., Desautels, S., Desta, T., Dimitroff, J., Dryden, G., Duvall, A., Farraye, F., Fein, S., Liu, BF., Gatof, D., Geenen, D., Ginsburg, P., Glombicki, A., Glover, S., Gordon, G., Grisolano, S., Hanauer, S., Hanson, J., Hardi, R., Hoffman, B., Isaacs, K., Kim, C., Koval, G., Lashner, B., Lawitz, E., Lee, S., Leman, B., Levine, J., Loftus, E., Mahadevan, U., Mannon, P., Marcet, J., Matsuyama, R., Matusow, G., McCabe, R., Mirkin, K., Murphy, M., Mushahwar, A., Mutlu, E., Nagrani, M., Nguyen, D., Nichols, M., Nieves Ramirez, A., Oubre, B., Pace, S., Pandak, W., Perera, L., Quadri, A., Quallich, L., Rajapakse, R., Randall, C., Regueiro, M., Safdi, A., Sandborn, W., Sands, B., Saubermann, L., Scherl, E., Schwartz, D., Sedghi, S., Shafran, I., Shepard, R., Siegel, C., Stein, L., Tatum, H., Triebling, A., Vasudeva, R., Winston, B., Wolf, D., Younes, Z., Feagan, BG., Colombel, JF., Rutgeerts, P., Sandborn, WJ., Sands, BE., Jewell, D., Mahon, J., Rothstein, R., Snydman, D., Massaro, J., Clifford, D., Berger, J., Major, E., Provenzale, J., Lev, M., Sandborn, W.J., Feagan, B.G., Colombel, J.F., Sands, B.E., Fedorak, R.N., Fox, I., Rosario, M., Sankoh, S., Xu, J., Stephens, K., Milch, C., and Parikh, A.

Abstract

BACKGROUND: The efficacy of vedolizumab, an α4β7 integrin antibody, in Crohn's disease is unknown. METHODS: In an integrated study with separate induction and maintenance trials, we assessed intravenous vedolizumab therapy (300 mg) in adults with active Crohn's disease. In the induction trial, 368 patients were randomly assigned to receive vedolizumab or placebo at weeks 0 and 2 (cohort 1), and 747 patients received open-label vedolizumab at weeks 0 and 2 (cohort 2); disease status was assessed at week 6. In the maintenance trial, 461 patients who had had a response to vedolizumab were randomly assigned to receive placebo or vedolizumab every 8 or 4 weeks until week 52. RESULTS: At week 6, a total of 14.5% of the patients in cohort 1 who received vedolizumab and 6.8% who received placebo were in clinical remission (i.e., had a score on the Crohn's Disease Activity Index [CDAI] of ≤150, with scores ranging from 0 to approximately 600 and higher scores indicating greater disease activity) (P=0.02); a total of 31.4% and 25.7% of the patients, respectively, had a CDAI-100 response (≥100-point decrease in the CDAI score) (P=0.23). Among patients in cohorts 1 and 2 who had a response to induction therapy, 39.0% and 36.4% of those assigned to vedolizumab every 8 weeks and every 4 weeks, respectively, were in clinical remission at week 52, as compared with 21.6% assigned to placebo (P<0.001 and P=0.004 for the two vedolizumab groups, respectively, vs. placebo). Antibodies against vedolizumab developed in 4.0% of the patients. Nasopharyngitis occurred more frequently, and headache and abdominal pain less frequently, in patients receiving vedolizumab than in patients receiving placebo. Vedolizumab, as compared with placebo, was associated with a higher rate of serious adverse events (24.4% vs. 15.3%), infections (44.1% vs. 40.2%), and serious infections (5.5% vs. 3.0%). CONCLUSIONS: Vedolizumab-treated patients with active Crohn's disease were more likely than patients rec

Published
2013

19. P300 Health related quality of life results through week 22 from the CERTIFI study, a multicenter, randomized, double-blind, placebo-controlled Phase2b study of ustekinumab in patients with moderately to severely active Crohn's disease

Author

Feagan, B., primary, Gasink, C., additional, Gao, L.-L., additional, Blank, M., additional, Johanns, J., additional, Guzzo, C., additional, Chiou, C.-F., additional, Sandborn, W., additional, Hanauer, S.B., additional, Targan, S., additional, Rutgeerts, P., additional, Ghosh, S., additional, De Villiers, W., additional, Panaccione, R., additional, Greenberg, G., additional, Schreiber, S., additional, Lichtiger, S., additional, and Sands, B., additional

Published
2012
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20. Health related quality of life results through week 22 from the CERTIFI study, a multicenter, randomized, double-blind, placebo-controlled phase2b study of Ustekinumab in patients with moderately to severely active Crohnʼs disease

Author

Sands, BE, primary, Gasink, C, additional, Gao, L-L, additional, Blank, MA, additional, Johanns, J, additional, Guzzo, C, additional, Chiou, C-F, additional, Sandborn, WJ, additional, Hanauer, SB, additional, Targan, S, additional, Rutgeerts, P, additional, Ghosh, S, additional, de Villiers, W, additional, Panaccione, R, additional, Greenberg, G, additional, Schreiber, S, additional, Lichtiger, S, additional, and Feagan, BG, additional

Published
2011
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23. A Multicenter, Randomized, Double-blind, Placebo-controlled Phase 2b Study of Ustekinumab, a Human Monoclonal Antibody to Il-12/23p40, in Patients with Moderately to Severely Active Crohnʼs Disease: Results through Week 36 from the CERTIFI Trial: 2011 ACG Presidential Poster

Author

Feagan, Brian, primary, Gasink, C., additional, Gao, L., additional, Blank, M., additional, Johanns, J., additional, Guzzo, C., additional, Sands, B., additional, Hanauer, Stephen, additional, Targan, S., additional, Rutgeerts, P., additional, Ghosh, S., additional, de Villiers, W., additional, Panaccione, R., additional, Greenberg, G., additional, Schreiber, S., additional, Lichtiger, S., additional, and Sandborn, William, additional

Published
2011
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27. Infliximab Reduces Colectomy in Patients with Moderate-to-Severe Ulcerative Colitis: Analysis from ACT 1 and ACT 2

Author

Sandborn, W. J., primary, Rutgeerts, P., additional, Feagan, B. G., additional, Reinisch, W., additional, Olson, A., additional, Johanns, J., additional, Lu, J., additional, Rachmilewitz, D., additional, Hanauer, S., additional, Lichtenstein, G., additional, de Villiers, W., additional, Present, D., additional, Sands, B., additional, and Colombel, J., additional

Published
2007
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28. Problematic aspects with regard to bail under South African law: The reverse onus provisions and the admission of the evidence of the applicant for bail at the later criminal trial revisited.

Author

de Villiers, W. P.

Subjects
BAIL, CRIMINAL trials, LEGAL testimony, JURISDICTION, EXPLOITATION of humans
Abstract

In the article I revisit the burden bestowed on an applicant for bail with regard to certain offences, and the fact that the testimony of the applicant for bail is admissible as evidence at his later criminal trial under South African law. I consider and compare the South African position with selected foreign jurisdictions and international human rights instruments. I argue that these provisions give reason for concern their own. I submit that the cumulative effect of these provisions, and especially so the exploitation thereof by the South African prosecution, is a failure of liberal democracy. [ABSTRACT FROM AUTHOR]

Published
2015
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31. Infliximab Induces and Maintains Mucosal Healing in Ulcerative Colitis Patients

Author

Sandborn, W. J., primary, Colombel, J. F., additional, Reinisch, W., additional, Feagan, B. G., additional, Rachmilewitz, D., additional, Olson, A., additional, Johanns, J., additional, Travers, S., additional, Present, D., additional, Sands, B. E., additional, Hanauer, S. B., additional, Lichenstein, G. R., additional, de Villiers, W. J.S., additional, and Rutgeerts, P., additional

Published
2005
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48. Green tea polyphenols block endotoxin-induced tumor necrosis factor-production and lethality in a murine model.

Author

Yang, F, de Villiers, W J, McClain, C J, and Varilek, G W

Abstract

Green tea polyphenols are potent antioxidants. They have both anti-cancer and anti-inflammatory effects. However, their mechanisms of actions remain unclear. In inflammation, tumor necrosis factor-alpha(TNFalpha) plays a pivotal role. NF-KB, an oxidative stress -sensitive nuclear transcription factor, controls the expression of many genes including the TNFalpha gene. We postulated that green tea polyphenols regulate TNFalpha gene expression by modulating NF-KB activation through their antioxidant properties. In the macrophage cell line, RAW264.7, (-)epigallocatechin gallate (EGCG), the major green tea polyphenol, decreased lipopolysaccharide (LPS)-induced TNFalpha production in a dose-dependent fashion (50% inhibition at 100 mmol/L). EGCG also inhibited LPS-induced TNFalpha mRNA expression and nuclear NF-KB-binding activity in RAW264.7 cells (30-40% inhibition at 100 mmol/L). Similarly, EGCG inhibited LPS-induced TNFalpha production in elicited mouse peritoneal macrophages. In male BALB/c mice, green tea polyphenols (given by oral gavage 2 h prior to an i.p. injection of 40 mg LPS/kg body wt) decreased LPS-induced TNFalpha production in serum in a dose-responsive fashion. At a dose of 0.5 g green tea polyphenols/kg body wt, serum TNFalpha was reduced by 80% of control. Moreover, 0.5 g green tea polyphenols/kg body wt completely inhibited LPS-induced lethality in male BALB/c mice. We conclude that the anti-inflammatory mechanism of green tea polyphenols is mediated at least in part through down-regulation of TNFalpha gene expression by blocking NF-KB activation. These findings suggest that green tea polyphenols may be effective therapy for a variety of inflammatory processes. [ABSTRACT FROM AUTHOR]

Published
1998
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49. The green tea polyphenol (-)-epigallocatechin-3-gallate blocks nuclear factor-kappa B activation by inhibiting I kappa B kinase activity in the intestinal epithelial cell line IEC-6.

Author

F, Yang, S, Oz H, S, Barve, J, de Villiers W, J, McClain C, and W, Varilek G

Abstract

The I kappa B kinase complex (IKK) mediates activation of the transcription factor nuclear factor-kappa B (NF-kappa B). We previously showed that green tea polyphenols inhibited endotoxin-mediated tumor necrosis factor-alpha (TNF alpha) production by blocking NF-kappa B activation. In this study, we evaluated whether green tea polyphenols inhibit NF-kappa B by blocking IKK activity. We assessed IKK activity by detecting changes in phosphorylation of an I kappa B alpha-glutathione S-transferase (GST) fusion protein. IEC-6 cells pretreated with an extract of green tea polyphenols (GrTPs; 0--0.4 mg/ml) had diminished TNF alpha-induced IKK and NF-kappa B activity. Of the various GrTPs, (-)-epigallocatechin-3-gallate (EGCG) was the most potent inhibitor. We next examined whether EGCG inhibited activated IKK. In cytosolic extracts of TNF alpha-stimulated cells, EGCG inhibited phosphorylation of I kappa B alpha-GST (IC(50) > 18 microM) consistent with inhibition of IKK activity. Using other polyphenols, we showed that the gallate group was essential for inhibition, and antioxidants were ineffective in blocking activated IKK. Importantly, EGCG decreased IKK activity in cytosolic extracts of NIK transiently transfected cells. This latter finding showed that our findings were not related to nonspecific kinase activity. In conclusion, EGCG is an effective inhibitor of IKK activity. This may explain, at least in part, some of the reported anti-inflammatory and anticancer effects of green tea.

Published
2001

50. CD36 does not play a direct role in HDL or LDL metabolism.

Author

de Villiers, W J, Cai, L, Webb, N R, de Beer, M C, van der Westhuyzen, D R, and de Beer, F C

Abstract

CD36 and scavenger receptor class B, type I (SR-BI) are both class B scavenger receptors that recognize a broad variety of ligands, including oxidized low density lipoprotein (oxLDL), HDL, anionic phospholipids, and apoptotic cells. In this study we investigated the role of mouse CD36 (mCD36) as a physiological lipoprotein receptor. We compared the association of various lipoprotein particles with mCD36 and mSR-BI expressed in COS cells by adenovirus-mediated gene transfer. mCD36 bound human oxLDL and mouse HDL with high affinity. Human LDL bound poorly to mCD36, indicating that mCD36 is unlikely to play a significant role in LDL metabolism. The ability of mCD36 to mediate the selective uptake of cholesteryl esters (CE) from receptor-bound HDL was assessed. In comparison with mSR-BI, mCD36 inefficiently mediated the selective uptake of CE. Hepatic overexpression of mCD36 in C57BL/6 mice by adenovirus-mediated gene transfer did not result in significant alterations in plasma LDL and HDL levels. We conclude that mCD36, while able to bind HDL with high affinity, does not contribute significantly to HDL or LDL metabolism.

Published
2001

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