3 results on '"De Souza, C. B."'
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2. Opportunistic infections and AIDS malignancies early after initiating combination antiretroviral therapy in high-income countries
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Lodi, Sara, Del Amo, Julia, Moreno, Santiago, Bucher, H. C., Furrer, Hansjakob, Logan, Roger, Sterne, Jonathan, Pérez-Hoyos, Santiago, Jarrín, Inma, Phillips, Andrew, Olson, Ashley, Van Sighem, Ard, Reiss, Peter, Sabin, C., Jose, Sophie, Justice, Amy, Goulet, Joseph, Miró, José M., Ferrer, Elena, Meyer, Laurence, Seng, Rémonie, Vourli, Georgia, Antoniadou, Anastasia, Dabis, Francois, Vandenhede, Mari Anne, Costagliola, Dominique, Abgrall, S., Hernán, Miguel A., Hernan, Miguel, Bansi, L., Hill, T., Dunn, D., Porter, K., Glabay, A., Orkin, C., Thomas, R., Jones, K., Fisher, M., Perry, N., Pullin, A., Churchill, D., Gazzard, B., Nelson, M., Asboe, D., Bulbeck, S., Mandalia, S., Clarke, J., Delpech, V., Anderson, J., Munshi, S., Post, F., Easterbrook, P., Khan, Y., Patel, P., Karim, F., Duffell, S., Gilson, R., Man, S. L., Williams, I., Gompels, M., Dooley, D., Schwenk, A., Ainsworth, J., Johnson, M., Youle, M., Lampe, F., Smith, C., Grabowska, H., Chaloner, C., Ismajani Puradiredja, D., Phillips, A., Walsh, J., Weber, J., Kemble, C., Mackie, N., Winston, A., Leen, C., Wilson, A., Bezemer, D. O., Gras, L. A.J., Kesselring, A. M., Van Sighem, A. I., Zaheri, S., Van Twillert, G., Kortmann, W., Branger, J., Prins, J. M., Kuijpers, T. W., Scherpbier, H. J., Van Der Meer, J. T.M., Wit, F. W.M.N., Godfried, M. H., Reiss, P., Van Der Poll, T., Nellen, F. J.B., Lange, J. M.A., Geerlings, S. E., Van Vugt, M., Pajkrt, D., Bos, J. C., Van Der Valk, M., Grijsen, M. L., Wiersinga, W. J., Brinkman, K., Blok, W. L., Frissen, P. H.J., Schouten, W. E.M., Van Den Berk, G. E.L., Veenstra, J., Lettinga, K. D., Mulder, J. W., Vrouenraets, S. M.E., Lauw, F. N., Van Eeden, A., Verhagen, D. W.M., Van Agtmael, M. A., Perenboom, R. M., Claessen, F. A.P., Bomers, M., Peters, E. J.G., Richter, C., Van Der Berg, J. P., Gisolf, E. H., Schippers, E. F., Van Nieuwkoop, C., Van Elzakker, E. P., Leyten, E. M.S., Gelinck, L. B.S., Pronk, M. J.H., Bravenboer, B., Kootstra, G. J., Delsing, C. E., Sprenger, H. G., Doedens, R., Scholvinck, E. H., Van Assen, S., Bierman, W. F.W., Soetekouw, R., Ten Kate, R. W., Van Vonderen, M. G.A., Van Houte, D. P.F., Kroon, F. P., Van Dissel, J. T., Arend, S. M., De Boer, M. G.J., Jolink, H., Ter Vollaard, H. J.M., Bauer, M. P., Weijer, S., El Moussaoui, R., Lowe, S., Schreij, G., Oude Lashof, A., Posthouwer, D., Koopmans, P. P., Keuter, M., Van Der Ven, A. J.A.M., Ter Hofstede, H. J.M., Dofferhoff, A. S.M., Warris, A., Van Crevel, R., Van Der Ende, M. E., De Vries-Sluijs, T. E.M.S., Schurink, C. A.M., Nouwen, J. L., Nispen Tot Pannerden, M. H., Verbon, A., Rijnders, B. J.A., Van Gorp, E. C.M., Hassing, R. J., Smeulders, A. W.M., Hartwig, N. G., Driessen, G. J.A., Den Hollander, J. G., Pogany, K., Juttmann, J. R., Van Kasteren, M. E.E., Hoepelman, A. I.M., Mudrikova, T., Schneider, M. M.E., Jaspers, C. A.J.J., Ellerbroek, P. M., Oosterheert, J. J., Arends, J. E., Wassenberg, M. W.M., Barth, R. E., Geelen, S. P.M., Wolfs, T. F.W., Bont, L. J., Van Den Berge, M., Stegeman, A., Groeneveld, P. H.P., Alleman, M. A., Bouwhuis, J. W., Barin, F., Burty, C., Duvivier, C., Enel, P., Fredouille-Heripret, L., Gasnault, J., Khuong, M. A., Mahamat, A., Pilorgé, F., Tattevin, P., Salomon, Valérie, Jacquemet, N., Costagliola, D., Grabar, S., Guiguet, M., Lanoy, E., Lièvre, L., Mary-Krause, M., Selinger-Leneman, H., Lacombe, J. M., Potard, V., Bricaire, F., Herson, S., Katlama, C., Simon, A., Desplanque, N., Girard, P. M., Meynard, J. L., Meyohas, M. C., Picard, O., Cadranel, J., Mayaud, C., Pialoux, G., Clauvel, J. P., Decazes, J. M., Gérard, L., Molina, J. M., Diemer, M., Sellier, P., Bentata, M., Honoré, P., Jeantils, V., Tassi, S., Mechali, D., Taverne, B., Bouvet, E., Crickx, B., Ecobichon, J. L., Matheron, S., Picard-Dahan, C., Yeni, P., Berthé, H., Dupont, C., Chandemerle, C., Mortier, E., De Truchis, P., Tisne-Dessus, D., Weiss, L., Salmon, D., Auperin, I., Gilquin, J., Roudière, L., Viard, J. P., Boue, F., Fior, R., Delfraissy, J. F., Goujard, C., Jung, C., Lesprit, Ph, Vittecoq, D., Fraisse, P., Lang, J. M., Rey, D., Beck-Wirth, G., Stahl, J. P., Lecercq, P., Gourdon, F., Laurichesse, H., Fresard, A., Lucht, F., Bazin, C., Verdon, R., Chavanet, P., Arvieux, C., Michelet, C., Choutet, P., Goudeau, A., Maître, M. F., Hoen, B., Eglinger, P., Faller, J. P., Borsa-Lebas, F., Caron, F., Reynes, J., Daures, J. P., May, T., Rabaud, C., Berger, J. L., Rémy, G., Arlet-Suau, E., Cuzin, L., Massip, P., Thiercelin Legrand, M. F., Pontonnier, G., Viget, N., Yasdanpanah, Y., Dellamonica, P., Pradier, C., Pugliese, P., Aleksandrowicz, K., Quinsat, D., Ravaux, I., Tissot-Dupont, H., Delmont, J. P., Moreau, J., Gastaut, J. A., Poizot Martin, I., Retornaz, F., Soubeyrand, J., Galinier, A., Ruiz, J. M., Allegre, T., Blanc, P. A., Bonnet-Montchardon, D., Lepeu, G., Granet-Brunello, P., Esterni, J. P., Pelissier, L., Cohen-Valensi, R., Nezri, M., Chadapaud, S., Laffeuillade, A., Billaud, E., Raffi, F., Boibieux, A., Peyramond, D., Livrozet, J. M., Touraine, J. L., Cotte, L., Trepo, C., Strobel, M., Bissuel, F., Pradinaud, R., Sobesky, M., Cabié, A., Gaud, C., Contant, M., Aubert, V., Barth, J., Battegay, M., Bernasconi, E., Böni, J., Burton-Jeangros, C., Calmy, A., Cavassini, M., Egger, M., Elzi, L., Fehr, J., Fellay, J., Furrer, H., Haerry, D., Fux, C. A., Gorgievski, M., Günthard, H., Hasse, B., Hirsch, H. H., Hösli, I., Kahlert, C., Kaiser, L., Keiser, O., Klimkait, T., Kovari, H., Ledergerber, B., Martinetti, G., Martinez De Tejada, B., Metzner, K., Müller, N., Nadal, D., Pantaleo, G., Rauch, A., Regenass, S., Rickenbach, M., Rudin, C., Schmid, P., Schultze, D., Schöni-Affolter, F., Schüpbach, J., Speck, R., Taffé, P., Tarr, P., Telenti, A., Trkola, A., Vernazza, P., Weber, R., Yerly, S., Casabona, J., Gallois, A., Esteve, A., Podzamczer, D., Murillas, J., Gatell, J. M., Manzardo, C., Tural, C., Clotet, B., Ferrer, E., Riera, M., Segura, F., Navarro, G., Force, L., Vilaró, J., Masabeu, A., García, I., Guadarrama, M., Cifuentes, C., Dalmau, D., Jaen, Agustí, C., Montoliu, A., Pérez, I., Gargoulas, Freyra, Blanco, J. L., Garcia-Alcaide, F., Martínez, E., Mallolas, J., López-Dieguez, M., García-Goez, J. F., Sirera, G., Romeu, J., Jou, A., Negredo, E., Miranda, C., Capitan, M. C., Saumoy, M., Imaz, A., Tiraboschi, J. M., Murillo, O., Bolao, F., Peña, C., Cabellos, C., Masó, M., Vila, A., Sala, M., Cervantes, M., Jose Amengual, Ma, Navarro, M., Penelo, E., Barrufet, P., Bejarano, G., Molina, J., Alvaro, M., Mercadal, J., Fernandez, Juanse, Ospina, Jesus E., Muñoz, M. A., Caro-Murillo, A. M., Sobrino, P., Jarrín, I., Gomez Sirvent, J. L., Rodríguez, P., Aleman, M. R., Alonso, M. M., Lopez, A. M., Hernandez, M. I., Soriano, V., Labarga, P., Barreiro, P., Medrano, J., Rivas, P., Herrero, D., Blanco, F., Vispo, M. E., Martín, L., Ramírez, G., De Diego, M., Rubio, R., Pulido, F., Moreno, V., Cepeda, C., Hervás, Rl, Iribarren, J. A., Arrizabalaga, J., Aramburu, M. J., Camino, X., Rodrí-guez-Arrondo, F., Von Wichmann, M. A., Pascual, L., Goenaga, M. A., Gutierrez, F., Masia, M., Ramos, J. M., Padilla, S., Sanchez-Hellín, V., Bernal, E., Escolano, C., Montolio, F., Peral, Y., Berenguer, J., Lopez, J. C., Miralles, P., Cosín, J., Sanchez, M., Gutierrez, I., Ramírez, M., Padilla, B., Vidal, F., Sanjuan, M., Peraire, J., Veloso, S., Vilades, C., Lopez-Dupla, M., Olona, M., Vargas, M., Aldeguer, J. L., Blanes, M., Lacruz, J., Salavert, M., Montero, M., Cuéllar, S., De Los Santos, I., Sanz, J., Oteo, J. A., Blanco, J. R., Ibarra, V., Metola, L., Sanz, M., Pérez-Martínez, L., Sola, J., Uriz, J., Castiello, J., Reparaz, J., Arriaza, M. J., Irigoyen, C., Moreno, S., Antela, A., Casado, J. L., Dronda, F., Moreno, A., Pérez, M. J., López, D., Gutiérrez, C., Hernández, B., Pumares, M., Martí, P., García, L., Page, C., García, F., Hernández, J., Peña, A., Muñoz, L., Parra, J., Viciana, P., Leal, M., López-Cortés, L. F., Trastoy, M., Mata, R., Justice, A. C., Fiellin, D. A., Rimland, D., Jones-Taylor, C., Oursler, K. A., Titanji, R., Brown, S., Garrison, S., Rodriguez-Barradas, M., Masozera, N., Goetz, M., Leaf, D., Simberkoff, M., Blumenthal, D., Leung, J., Butt, A., Hoffman, E., Gibert, C., Peck, R., Mattocks, K., Braithwaite, S., Brandt, C., Bryant, K., Cook, R., Conigliaro, J., Crothers, K., Chang, J., Crystal, S., Day, N., Erdos, J., Freiberg, M., Kozal, M., Gandhi, N., Gaziano, M., Gerschenson, M., Good, B., Gordon, A., Goulet, J. L., Hernán, M. A., Kraemer, K., Lim, J., Maisto, S., Miller, P., Mole, L., O'Connor, P., Papas, R., Robins, J. M., Rinaldo, C., Roberts, M., Samet, J., Tierney, B., Whittle, J., Babiker, A., Brettle, R., Darbyshire, J., Goldberg, D., Hawkins, D., Jaffe, H., Johnson, A., McLean, K., Pillay, D., Cursley, Adam, Ewings, Fiona, Fairbrother, Keith, Louisa Gnatiuc, S. L., Murphy, Brendan, Douglas, G., Kennedy, N., Pritchard, J., Andrady, U., Rajda, N., Maw, R., McKernan, S., Drake, S., Gilleran, G., White, D., Ross, J., Toomer, S., Hewart, R., Wilding, H., Woodward, R., Dean, G., Heald, L., Horner, P., Glover, S., Bansaal, D., Eduards, S., Carne, C., Browing, M., Das, R., Stanley, B., Estreich, S., Magdy, A., O'Mahony, C., Fraser, P., Hayman, B., Jebakumar, S. P.R., Joshi, U., Ralph, S., Wade, A., Mette, R., Lalik, J., Summerfield, H., El-Dalil, A., France, J. A., White, C., Robertson, R., Gordon, S., McMillan, S., Morris, S., Lean, C., Vithayathil, K., McLean, L., Winter, A., Gale, D., Jacobs, S., Tayal, S., Short, L., Green, S., Williams, G., Sivakumar, K., Bhattacharyya, N. D., Monteiro, E., Minton, J., Dhar, J., Nye, F., De Souza, C. B., Isaksen, A., McDonald, L., Franca, A., William, L., Jendrulek, I., Peters, B., Shaunak, S., El-Gadi, S., Easterbrook, P. J., Mazhude, C., Johnstone, R., Fakoya, A., McHale, J., Waters, A., Kegg, S., Mitchell, S., Byrne, P., Rice, P., Fidler, S., Mullaney, S. A., McCormack, S., David, D., Melville, R., Phillip, K., Balachandran, T., Mabey-Puttock, S., Sukthankar, A., Murphy, C., Wilkins, E., Ahmad, S., Haynes, J., Evans, E., Ong, E., Grey, R., Meaden, J., Bignell, C., Loay, D., Peacock, K., Girgis, M. R., Morgan, B., Palfreeman, A., Wilcox, J., Tobin, J., Tucker, L., Saeed, A. M., Chen, F., Deheragada, A., Williams, O., Lacey, H., Herman, S., Kinghorn, D., Devendra, V. S., Wither, J., Dawson, S., Rowen, D., Harvey, J., Bridgwood, A., Singh, G., Chauhan, M., Kellock, D., Young, S., Dannino, S., Kathir, Y., Rooney, G., Currie, J., FitzGerald, M., Devendra, S., Keane, F., Booth, G., Green, T., Arumainayyagam, J., Chandramani, S., Rajamanoharan, S., Robinson, T., Curless, E., Gokhale, R., Tariq, A., Luzzi, G., Fairley, I., Wallis, F., Smit, E., Ward, F., Loze, B., Morlat, P., Bonarek, M., Bonnet, F., Nouts, C., Louis, I., Reliquet, V., Sauser, F., Biron, C., Mounoury, O., Hue, H., Brosseau, D., Ghosn, J., Rannou, M. T., Bergmann, J. F., Badsi, E., Rami, A., Parrinello, M., Samanon-Bollens, D., Campa, P., Tourneur, M., Desplanques, N., Jeanblanc, F., Chiarello, P., Makhloufi, D., Blanc, A. P., Allègre, T., Baillat, V., Lemoing, V., Merle De Boever, C., Tramoni, C., Sobesky, G., Abel, S., Beaujolais, V., Slama, L., Chakvetadze, C., Berrebi, V., Fournier, I., Gerbe, J., Koffi, K., Augustin-Normand, C., Miailhes, P., Thoirain, V., Brochier, C., Souala, F., Ratajczak, M., Beytoux, J., Jacomet, C., Rouveix, E., Morelon, S., Olivier, C., Lortholary, O., Dupont, B., Maignan, A., Ragnaud, J. M., Raymond, I., Leport, C., Jadand, C., Jestin, C., Longuet, P., Boucherit, S., Sereni, D., Lascoux, C., Prevoteau, F., Sobel, A., Levy, Y., Lelievre, J. D., Lascaux, A. S., Dominguez, S., Dumont, C., Aumâitre, H., Delmas, B., Saada, M., Medus, M., Guillevin, L., Tahi, T., Yazdanpanah, Y., Pavel, S., Marien, M. C., Drenou, B., Beck, C., Benomar, M., Tubiana, R., Ait Mohand, H., Chermak, A., Ben Abdallah, S., Touam, F., Drobacheff, C., Folzer, A., Obadia, M., Prudhomme, L., Bonnet, E., Balzarin, F., Pichard, E., Chennebault, J. M., Fialaire, P., Loison, J., Galanaud, P., Boué, F., Bornarel, D., Six, M., Ferret, P., Batisse, D., Gonzales-Canali, G., Devidas, A., Chevojon, P., Turpault, I., Lafeuillade, A., Cheret, A., Philip, G., Morel, P., Timsit, J., Amirat, N., Brancion, C., Cabane, J., Tredup, J., Stein, A., Ravault, I., Chavanet, C., Buisson, M., Treuvetot, S., Nau, P., Bastides, F., Boyer, L., Wassoumbou, S., Oksenhendeler, E., Bernard, L., Domart, Y., Merrien, D., Greder Belan, A., Gayraud, M., Bodard, L., Meudec, A., Beuscart, C., Daniel, C., Pape, E., Vinceneux, P., Simonpoli, A. M., Zeng, A., Fournier, L., Fuzibet, J. G., Sohn, C., Rosenthal, E., Quaranta, M., Chaillou, S., Sabah, M., Audhuy, B., Schieber, A., Moreau, P., Niault, M., Vaillant, O., Huchon, G., Compagnucci, A., De Lacroix Szmania, I., Richier, L., Lamaury, I., Saint-Dizier, F., Garipuy, D., Drogoul, M. P., Fabre, G., Lambert De Cursay, G., Abraham, B., Perino, C., Lagarde, P., David, F., Roche-Sicot, J., Saraux, J. L., Leprêtre, A., Fampin, B., Uludag, A., Morin, A. S., Bletry, O., Zucman, D., Regnier, A., Girard, J. J., Quinsat, D. T., Heripret, L., Grihon, F., Houlbert, D., Ruel, M., Chemlal, K., Debab, Y., Tremollieres, F., Perronne, V., Slama, B., Perré, P., Miodovski, C., Guermonprez, G., Dulioust, A., Boudon, P., Malbec, D., Patey, O., Semaille, C., Deville, J., Remy, G., Béguinot, I., Chambrin, V., Pignon, C., Estocq, G. A., Levy, A., Duracinsky, M., Le Bras, P., Ngussan, M. S., Peretti, D., Medintzeff, N., Lambert, T., Segeral, O., Lezeau, P., Laurian, Y., Piketty, C., Karmochkine, M., Eliaszewitch, M., Jayle, D., Kazatchkine, M., Colasante, U., Duval, X., Nouaouia, W., Vilde, J. L., Bollens, D., Binet, D., Diallo, B., Fonquernie, L., Lagneau, J. L., Launay, O., Pietrie, M. P., Sicard, D., Stieltjes, N., Michot, J., Bourdillon, F., Obenga, G., Escaut, L., Bolliot, C., Schneider, L., Iguertsira, M., Tomei, C., Dhiver, C., Tissot Dupont, H., Vallon, A., Gallais, J., Gallais, H., Durant, J., Mondain, V., Perbost, I., Cassuto, J. P., Karsenti, J. M., Venti, H., Ceppi, C., Krivitsky, J. A., Bouchaud, O., Honore, P., Delgado, J., Rouzioux, C., Burgard, M., Boufassa, L., Peynet, J., Pérez-Hoyos, S., Del Amo, J., Alvarez, D., Monge, S., Muga, R., Sanvisens, A., Tor, J., Rivas, I., Vallecillo, G., Del Romero, J., Raposo, P., Rodríguez, C., Vera, M., Hurtado, I., Belda, J., Fernandez, E., Alastrue, I., Santos, C., Tasa, T., Juan, A., Trullen, J., Garcia De Olalla, P., Cayla, J., Masdeu, E., Knobel, H., Mirò, J. M., Sambeat, M. A., Guerrero, R., Rivera, E., Marco, A., Quintana, M., Gonzalez, C., Castilla, J., Guevara, M., De Mendoza, C., Zahonero, N., Ortíz, M., Paraskevis, D., Touloumi, G., Pantazis, N., Bakoyannis, G., Gioukari, V., Antoniadou, A., Papadopoulos, A., Petrikkos, G., Daikos, G., Psichogiou, M., Gargalianos-Kakolyris, P., Xylomenos, G., Katsarou, O., Kouramba, A., Ioannidou, P., Kordossis, T., Kontos, A., Lazanas, M., Chini, M., Tsogas, N., Panos, G., Paparizos, V., Leuow, K., Kourkounti, S., Sambatakou, H., Mariolis, I., Skoutelis, A., Papastamopoulos, V., Baraboutis, I., Internal medicine, APH - Aging & Later Life, Pediatric surgery, CCA - Innovative therapy, ICaR - Circulation and metabolism, ICaR - Ischemia and repair, Graduate School, Paediatric Infectious Diseases / Rheumatology / Immunology, Landsteiner Laboratory, AII - Amsterdam institute for Infection and Immunity, Infectious diseases, Global Health, Center of Experimental and Molecular Medicine, APH - Amsterdam Public Health, AII - Inflammatory diseases, and ARD - Amsterdam Reproduction and Development
- Subjects
Adult ,Male ,medicine.medical_specialty ,Adolescent ,Opportunistic infection ,AIDS-Related Opportunistic Infections ,Immunology ,Population ,Retinitis ,HIV Infections ,Article ,17 Psychology And Cognitive Sciences ,Young Adult ,Immune reconstitution inflammatory syndrome ,Antiretroviral Therapy, Highly Active ,Neoplasms ,Virology ,Internal medicine ,medicine ,Humans ,Immunology and Allergy ,education ,Inverse probability weighting ,Aged ,education.field_of_study ,business.industry ,Developed Countries ,Incidence ,Progressive multifocal leukoencephalopathy ,Hazard ratio ,HIV ,virus diseases ,11 Medical And Health Sciences ,Middle Aged ,06 Biological Sciences ,medicine.disease ,United States ,Europe ,Infectious Diseases ,Anti-Retroviral Agents ,Unmasking ,Female ,Cytomegalovirus retinitis ,business - Abstract
Background: There is little information on the incidence of AIDS-defining events which have been reported in the literature to be associated with immune reconstitution inflammatory syndrome (IRIS) after combined antiretroviral therapy (cART) initiation. These events include tuberculosis, mycobacterium avium complex (MAC), cytomegalovirus (CMV) retinitis, progressive multifocal leukoencephalopathy (PML), herpes simplex virus (HSV), Kaposi sarcoma, non-Hodgkin lymphoma (NHL), cryptococcosis and candidiasis.Methods: We identified individuals in the HIV-CAUSAL Collaboration, which includes data from six European countries and the US, who were HIV-positive between 1996 and 2013, antiretroviral therapy naive, aged at least 18 years, hadCD4+ cell count and HIV-RNA measurements and had been AIDS-free for at least 1 month between those measurements and the start of follow-up. For each AIDS-defining event, we estimated the hazard ratio for no cART versus less than 3 and at least 3 months since cART initiation, adjusting for time-varying CD4+ cell count and HIV-RNA via inverse probability weighting.Results: Out of 96 562 eligible individuals (78% men) with median (interquantile range) follow-up of 31 [13,65] months, 55 144 initiated cART. The number of cases varied between 898 for tuberculosis and 113 for PML. Compared with non-cART initiation, the hazard ratio (95% confidence intervals) up to 3 months after cART initiation were 1.21 (0.90-1.63) for tuberculosis, 2.61 (1.05-6.49) for MAC, 1.17 (0.34-4.08) for CMV retinitis, 1.18 (0.62-2.26) for PML, 1.21 (0.83-1.75) for HSV, 1.18 (0.87-1.58) for Kaposi sarcoma, 1.56 (0.82-2.95) for NHL, 1.11 (0.56-2.18) for cryptococcosis and 0.77 (0.40-1.49) for candidiasis.Conclusion: With the potential exception of mycobacterial infections, unmasking IRIS does not appear to be a common complication of cART initiation in high-income countries.
- Published
- 2014
3. Antigenicity of cystatin-binding proteins from parasitic protozoan. Detection by a proteinase inhibitor based capture immunoassay (PINC-ELISA).
- Author
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Scharfstein J, Abrahamson M, de Souza CB, Barral A, and Silva IV
- Subjects
- Animals, Antibodies, Monoclonal immunology, Cysteine Endopeptidases immunology, Cysteine Endopeptidases metabolism, Enzyme-Linked Immunosorbent Assay methods, Leishmania enzymology, Mice, Precipitin Tests, Trypanosoma cruzi enzymology, Cystatins metabolism, Cysteine Endopeptidases analysis
- Abstract
A novel immunoassay (PINC-ELISA) was designed using proteinase inhibitors of the cystatin superfamily (PINC) in the solid phase, to promote the selective capture of cysteine proteinases. The method was applied in the identification of papain-like antigens from parasitic protozoa. PINC of human origin, namely recombinant cystatin C (r-cystatin C) or low molecular weight kininogen were used in the assays to adsorb proteases contained in cell lysates from various trypanosomatids. The PINC-ELISA was at first optimized with the major cysteine proteinase from Trypanosoma cruzi (known as GP57/51 or cruzipain), an antigen whose serodiagnostic properties were previously established. Cruzipain is selectively adsorbed from crude extracts of T. cruzi onto PINC-coated wells; the finding that antibodies bind to epitopes located away from the sites of interaction with r-cystatin or low molecular weight kininogen has allowed for the screening of antibodies in chagasic sera, the methodology being advantageous in that it dispensed prior purification of the proteinase antigen. The PINC-ELISA was then carried out with lysates originating from Leishmania m. amazonensis (amastigotes) or Leishmania donovani (promastigotes). Complexes between solid-phase r-cystatin C and antigenic ligands in the lysates were again detected. The Leishmania molecules which bound to r-cystatin C, were respectively recognized by serum antibodies from mice chronically infected with L. amazonensis or from patients with visceral leishmaniasis. Direct evidence for the presence of cysteine proteinases in lysates from L. donovani was then obtained, using synthetic fluorogenic substrates.(ABSTRACT TRUNCATED AT 250 WORDS)
- Published
- 1995
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