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32 results on '"Toledo, Karina"'

3. In vitro antiviral effect of sulfated pectin from Mangifera indica against the infection of the viral agent of childhood bronchiolitis (Respiratory Syncytial Virus - RSV)

Author

Barboza, Mario Gabriel Lopes, Dyna, André Luiz, Lima, Thiago Ferreira, Tavares, Eliandro Reis, Yamada-Ogatta, Sueli Fumie, Deduch, Flávia, Orsato, Alexandre, Toledo, Karina Alves, Cunha, Arcelina Pacheco, Ricardo, Nágila Maria Pontes Silva, and Galhardi, Ligia Carla Faccin

Published
2024
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7. Genetic Susceptibility to Mood Disorders and Risk of Stroke: A Polygenic Risk Score and Mendelian Randomization Study

Author

Sun, Jiangming, Borné, Yan, Edsfeldt, Andreas, Wang, Yunpeng, Pan, Mengyu, Melander, Olle, Engström, Gunnar, Gonçalves, Isabel, Abecasis, Goncalo, Baras, Aris, Cantor, Michael, Coppola, Giovanni, Economides, Aris, Lotta, Luca A., Overton, John D., Reid, Jeffrey G., Shuldiner, Alan, Beechert, Christina, Forsythe, Caitlin, Fuller, Erin D., Gu, Zhenhua, Lattari, Michael, Lopez, Alexander, Overton, John D., Schleicher, Thomas D., Padilla, Maria Sotiropoulos, Toledo, Karina, Widom, Louis, Wolf, Sarah E., Pradhan, Manasi, Manoochehri, Kia, Ulloa, Ricardo H., Bai, Xiaodong, Balasubramanian, Suganthi, Barnard, Leland, Blumenfeld, Andrew, Eom, Gisu, Habegger, Lukas, Hahn, Young, Hawes, Alicia, Khalid, Shareef, Reid, Jeffrey G., Maxwell, Evan K., Salerno, William, Staples, Jeffrey C., Yadav, Ashish, Jones, Marcus B., and Mitnaul, Lyndon J.

Published
2023
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9. An international genome-wide meta-analysis of primary biliary cholangitis: Novel risk loci and candidate drugs

Author

Siminovitch, Katherine A., Hirschfield, Gideon M., Mason, Andrew, Vincent, Catherine, Xie, Gang, Zhang, Jinyi, Tang, Ruqi, Ma, Xiong, Li, Zhiqiang, Shi, Yongyong, Affronti, Andrea, Almasio, Piero L., Alvaro, Domenico, Andreone, Pietro, Andriulli, Angelo, Azzaroli, Francesco, Battezzati, Pier Maria, Benedetti, Antonio, Bragazzi, MariaConsiglia, Brunetto, Maurizia, Bruno, Savino, Calvaruso, Vincenza, Cardinale, Vincenzo, Casella, Giovanni, Cazzagon, Nora, Ciaccio, Antonio, Coco, Barbara, Colli, Agostino, Colloredo, Guido, Colombo, Massimo, Colombo, Silvia, Cristoferi, Laura, Cursaro, Carmela, Crocè, Lory Saveria, Crosignani, Andrea, D’Amato, Daphne, Donato, Francesca, Elia, Gianfranco, Fabris, Luca, Fagiuoli, Stefano, Ferrari, Carlo, Floreani, Annarosa, Galli, Andrea, Giannini, Edoardo, Grattagliano, Ignazio, Lampertico, Pietro, Lleo, Ana, Malinverno, Federica, Mancuso, Clara, Marra, Fabio, Marzioni, Marco, Massironi, Sara, Mattalia, Alberto, Miele, Luca, Milani, Chiara, Morini, Lorenzo, Morisco, Filomena, Muratori, Luigi, Muratori, Paolo, Niro, Grazia A., O’Donnell, Sarah, Picciotto, Antonio, Portincasa, Piero, Rigamonti, Cristina, Ronca, Vincenzo, Rosina, Floriano, Spinzi, Giancarlo, Strazzabosco, Mario, Tarocchi, Mirko, Tiribelli, Claudio, Toniutto, Pierluigi, Valenti, Luca, Vinci, Maria, Zuin, Massimo, Nakamura, Hitomi, Abiru, Seigo, Nagaoka, Shinya, Komori, Atsumasa, Yatsuhashi, Hiroshi, Ishibashi, Hiromi, Ito, Masahiro, Migita, Kiyoshi, Ohira, Hiromasa, Katsushima, Shinji, Naganuma, Atsushi, Sugi, Kazuhiro, Komatsu, Tatsuji, Mannami, Tomohiko, Matsushita, Kouki, Yoshizawa, Kaname, Makita, Fujio, Nikami, Toshiki, Nishimura, Hideo, Kouno, Hiroshi, Kouno, Hirotaka, Ota, Hajime, Komura, Takuya, Nakamura, Yoko, Shimada, Masaaki, Hirashima, Noboru, Komeda, Toshiki, Ario, Keisuke, Nakamuta, Makoto, Yamashita, Tsutomu, Furuta, Kiyoshi, Kikuchi, Masahiro, Naeshiro, Noriaki, Takahashi, Hironao, Mano, Yutaka, Tsunematsu, Seiji, Yabuuchi, Iwao, Shimada, Yusuke, Yamauchi, Kazuhiko, Sugimoto, Rie, Sakai, Hironori, Mita, Eiji, Koda, Masaharu, Tsuruta, Satoru, Kamitsukasa, Hiroshi, Sato, Takeaki, Masaki, Naohiko, Kobata, Tatsuro, Fukushima, Nobuyoshi, Ohara, Yukio, Muro, Toyokichi, Takesaki, Eiichi, Takaki, Hitoshi, Yamamoto, Tetsuo, Kato, Michio, Nagaoki, Yuko, Hayashi, Shigeki, Ishida, Jinya, Watanabe, Yukio, Kobayashi, Masakazu, Koga, Michiaki, Saoshiro, Takeo, Yagura, Michiyasu, Hirata, Keisuke, Tanaka, Atsushu, Takikawa, Hajime, Zeniya, Mikio, Abe, Masanori, Onji, Morikazu, Kaneko, Shuichi, Honda, Masao, Arai, Kuniaki, Arinaga-Hino, Teruko, Hashimoto, Etsuko, Taniai, Makiko, Umemura, Takeji, Joshita, Satoru, Nakao, Kazuhiko, Ichikawa, Tatsuki, Shibata, Hidetaka, Yamagiwa, Satoshi, Seike, Masataka, Honda, Koichi, Sakisaka, Shotaro, Takeyama, Yasuaki, Harada, Masaru, Senju, Michio, Yokosuka, Osamu, Kanda, Tatsuo, Ueno, Yoshiyuki, Kikuchi, Kentaro, Ebinuma, Hirotoshi, Himoto, Takashi, Yasunami, Michio, Murata, Kazumoto, Mizokami, Masashi, Kawata, Kazuhito, Shimoda, Shinji, Miyake, Yasuhiro, Takaki, Akinobu, Yamamoto, Kazuhide, Hirano, Katsuji, Ichida, Takafumi, Ido, Akio, Tsubouchi, Hirohito, Chayama, Kazuaki, Harada, Kenichi, Nakanuma, Yasuni, Maehara, Yoshihiko, Taketomi, Akinobu, Shirabe, Ken, Soejima, Yuji, Mori, Akira, Yagi, Shintaro, Uemoto, Shinji, H, Egawa, Tanaka, Tomohiro, Yamashiki, Noriyo, Tamura, Sumito, Sugawara, Yasuhiro, Kokudo, Norihiro, Juran, Brian D., Atkinson, Elizabeth J., Cheung, Angela, de Andrade, Mariza, Lazaridis, Konstantinos N., Chalasani, Naga, Luketic, Vel, Odin, Joseph, Chopra, Kapil, Baras, Aris, Horowitz, Julie, Abecasis, Goncalo, Cantor, Michael, Coppola, Giovanni, Economides, Aris, Lotta, Luca A., Overton, John D., Reid, Jeffrey G., Shuldiner, Alan, Beechert, Christina, Forsythe, Caitlin, Fuller, Erin D., Gu, Zhenhua, Lattari, Michael, Lopez, Alexander, Schleicher, Thomas D., Padilla, Maria Sotiropoulos, Toledo, Karina, Widom, Louis, Wolf, Sarah E., Pradhan, Manasi, Manoochehri, Kia, Ulloa, Ricardo H., Bai, Xiaodong, Balasubramanian, Suganthi, Barnard, Leland, Blumenfeld, Andrew, Eom, Gisu, Habegger, Lukas, Hawes, Alicia, Khalid, Shareef, Maxwell, Evan K., Salerno, William, Staples, Jeffrey C., Jones, Marcus B., Mitnaul, Lyndon J., Sturgess, Richard, Healey, Christopher, Yeoman, Andrew, Gunasekera, Anton VJ., Kooner, Paul, Kapur, Kapil, Sathyanarayana, V., Kallis, Yiannis, Subhani, Javaid, Harvey, Rory, McCorry, Roger, Rooney, Paul, Ramanaden, David, Evans, Richard, Mathialahan, Thiriloganathan, Gasem, Jaber, Shorrock, Christopher, Bhalme, Mahesh, Southern, Paul, Tibble, Jeremy A., Gorard, David A., Jones, Susan, Mells, George, Mulcahy, Victoria, Srivastava, Brijesh, Foxton, Matthew R., Collins, Carole E., Elphick, David, Karmo, Mazn, Porras-Perez, Francisco, Mendall, Michael, Yapp, Tom, Patel, Minesh, Ede, Roland, Sayer, Joanne, Jupp, James, Fisher, Neil, Carter, Martyn J., Koss, Konrad, Shah, Jayshri, Piotrowicz, Andrzej, Scott, Glyn, Grimley, Charles, Gooding, Ian R., Williams, Simon, Tidbury, Judith, Lim, Guan, Cheent, Kuldeep, Levi, Sass, Mansour, Dina, Beckley, Matilda, Hollywood, Coral, Wong, Terry, Marley, Richard, Ramage, John, Gordon, Harriet M., Ridpath, Jo, Ngatchu, Theodore, Bob Grover, Vijay Paul, Shidrawi, Ray G., Abouda, George, Corless, L., Narain, Mark, Rees, Ian, Brown, Ashley, Taylor-Robinson, Simon, Wilkins, Joy, Grellier, Leonie, Banim, Paul, Das, Debasish, Heneghan, Michael A., Curtis, Howard, Matthews, Helen C., Mohammed, Faiyaz, Aldersley, Mark, Srirajaskanthan, Raj, Walker, Giles, McNair, Alistair, Sharif, Amar, Sen, Sambit, Bird, George, Prince, Martin I., Prasad, Geeta, Kitchen, Paul, Barnardo, Adrian, Oza, Chirag, Sivaramakrishnan, Nurani N., Gupta, Prakash, Shah, Amir, Evans, Chris DJ., Saha, Subrata, Pollock, Katharine, Bramley, Peter, Mukhopadhya, Ashis, Barclay, Stephen T., McDonald, Natasha, Bathgate, Andrew J., Palmer, Kelvin, Dillon, John F., Rushbrook, Simon M., Przemioslo, Robert, McDonald, Chris, Millar, Andrew, Tai, Cheh, Mitchell, Stephen, Metcalf, Jane, Shaukat, Syed, Ninkovic, Mary, Shmueli, Udi, Davis, Andrew, Naqvi, Asifabbas, Lee, Tom JW., Ryder, Stephen, Collier, Jane, Klass, Howard, Cramp, Matthew E., Sharer, Nichols, Aspinall, Richard, Ghosh, Deb, Douds, Andrew C., Booth, Jonathan, Williams, Earl, Hussaini, Hyder, Christie, John, Mann, Steven, Thorburn, Douglas, Marshall, Aileen, Patanwala, Imran, Ala, Aftab, Maltby, Julia, Matthew, Ray, Corbett, Chris, Vyas, Sam, Singhal, Saket, Gleeson, Dermot, Misra, Sharat, Butterworth, Jeff, George, Keith, Harding, Tim, Douglass, Andrew, Mitchison, Harriet, Panter, Simon, Shearman, Jeremy, Bray, Gary, Roberts, Michael, Butcher, Graham, Forton, Daniel, Mahmood, Zahid, Cowan, Matthew, Das, Debashis, Ch’ng, Chin Lye, Rahman, Mesbah, Whatley, Gregory C.A., Wesley, Emma, Mandal, Aditya, Jain, Sanjiv, Pereira, Stephen P., Wright, Mark, Trivedi, Palak, Gordon, Fiona H., Unitt, Esther, Palejwala, Altaf, Austin, Andrew, Vemala, Vishwaraj, Grant, Allister, Higham, Andrew D., Brind, Alison, Mathew, Ray, Cox, Mark, Ramakrishnan, Subramaniam, King, Alistair, Whalley, Simon, Fraser, Jocelyn, Thomson, S.J., Bell, Andrew, Wong, Voi Shim, Kia, Richard, Gee, Ian, Keld, Richard, Ransford, Rupert, Gotto, James, Millson, Charles, Cordell, Heather J., Fryett, James J., Ueno, Kazuko, Darlay, Rebecca, Aiba, Yoshihiro, Hitomi, Yuki, Kawashima, Minae, Nishida, Nao, Khor, Seik-Soon, Gervais, Olivier, Kawai, Yosuke, Nagasaki, Masao, Tokunaga, Katsushi, Gerussi, Alessio, Carbone, Marco, Asselta, Rosanna, Ferreira, Manuel A.R., Sun, Dylan, Jones, David E., Flack, Steven, Spicer, Ann, Mulcahy, Victoria L., Byan, Jinyoung, Han, Younghun, Sandford, Richard N., Amos, Christopher I., Seldin, Michael F., Invernizzi, Pietro, Nakamura, Minoru, and Mells, George F.

Published
2021
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10. Meta-analysis uncovers genome-wide significant variants for rapid kidney function decline

Author

Alizadeh, Behrooz Z., Boezen, H. Marike, Franke, Lude, van der Harst, Pim, Navis, Gerjan, Rots, Marianne, Snieder, Harold, Swertz, Morris, Wolffenbuttel, Bruce H.R., Wijmenga, Cisca, Abecasis, Goncalo, Baras, Aris, Cantor, Michael, Coppola, Giovanni, Economides, Aris, Lotta, Luca A., Overton, John D., Reid, Jeffrey G., Shuldiner, Alan, Beechert, Christina, Forsythe, Caitlin, Fuller, Erin D., Gu, Zhenhua, Lattari, Michael, Lopez, Alexander, Schleicher, Thomas D., Padilla, Maria Sotiropoulos, Toledo, Karina, Widom, Louis, Wolf, Sarah E., Pradhan, Manasi, Manoochehri, Kia, Ulloa, Ricardo H., Bai, Xiaodong, Balasubramanian, Suganthi, Barnard, Leland, Blumenfeld, Andrew, Eom, Gisu, Habegger, Lukas, Hawes, Alicia, Khalid, Shareef, Maxwell, Evan K., Salerno, William, Staples, Jeffrey C., Jones, Marcus B., Mitnaul, Lyndon J., Gorski, Mathias, Jung, Bettina, Li, Yong, Matias-Garcia, Pamela R., Wuttke, Matthias, Coassin, Stefan, Thio, Chris H.L., Kleber, Marcus E., Winkler, Thomas W., Wanner, Veronika, Chai, Jin-Fang, Chu, Audrey Y., Cocca, Massimiliano, Feitosa, Mary F., Ghasemi, Sahar, Hoppmann, Anselm, Horn, Katrin, Li, Man, Nutile, Teresa, Scholz, Markus, Sieber, Karsten B., Teumer, Alexander, Tin, Adrienne, Wang, Judy, Tayo, Bamidele O., Ahluwalia, Tarunveer S., Almgren, Peter, Bakker, Stephan J.L., Banas, Bernhard, Bansal, Nisha, Biggs, Mary L., Boerwinkle, Eric, Bottinger, Erwin P., Brenner, Hermann, Carroll, Robert J., Chalmers, John, Chee, Miao-Li, Chee, Miao-Ling, Cheng, Ching-Yu, Coresh, Josef, de Borst, Martin H., Degenhardt, Frauke, Eckardt, Kai-Uwe, Endlich, Karlhans, Franke, Andre, Freitag-Wolf, Sandra, Gampawar, Piyush, Gansevoort, Ron T., Ghanbari, Mohsen, Gieger, Christian, Hamet, Pavel, Ho, Kevin, Hofer, Edith, Holleczek, Bernd, Xian Foo, Valencia Hui, Hutri-Kähönen, Nina, Hwang, Shih-Jen, Ikram, M. Arfan, Josyula, Navya Shilpa, Kähönen, Mika, Khor, Chiea-Chuen, Koenig, Wolfgang, Kramer, Holly, Krämer, Bernhard K., Kühnel, Brigitte, Lange, Leslie A., Lehtimäki, Terho, Lieb, Wolfgang, Loos, Ruth J.F., Lukas, Mary Ann, Lyytikäinen, Leo-Pekka, Meisinger, Christa, Meitinger, Thomas, Melander, Olle, Milaneschi, Yuri, Mishra, Pashupati P., Mononen, Nina, Mychaleckyj, Josyf C., Nadkarni, Girish N., Nauck, Matthias, Nikus, Kjell, Ning, Boting, Nolte, Ilja M., O’Donoghue, Michelle L., Orho-Melander, Marju, Pendergrass, Sarah A., Penninx, Brenda W.J.H., Preuss, Michael H., Psaty, Bruce M., Raffield, Laura M., Raitakari, Olli T., Rettig, Rainer, Rheinberger, Myriam, Rice, Kenneth M., Rosenkranz, Alexander R., Rossing, Peter, Rotter, Jerome I., Sabanayagam, Charumathi, Schmidt, Helena, Schmidt, Reinhold, Schöttker, Ben, Schulz, Christina-Alexandra, Sedaghat, Sanaz, Shaffer, Christian M., Strauch, Konstantin, Szymczak, Silke, Taylor, Kent D., Tremblay, Johanne, Chaker, Layal, van der Most, Peter J., Verweij, Niek, Völker, Uwe, Waldenberger, Melanie, Wallentin, Lars, Waterworth, Dawn M., White, Harvey D., Wilson, James G., Wong, Tien-Yin, Woodward, Mark, Yang, Qiong, Yasuda, Masayuki, Yerges-Armstrong, Laura M., Zhang, Yan, Wanner, Christoph, Böger, Carsten A., Köttgen, Anna, Kronenberg, Florian, Pattaro, Cristian, and Heid, Iris M.

Published
2021
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11. Polygenic Risk of Psychiatric Disorders Exhibits Cross-trait Associations in Electronic Health Record Data From European Ancestry Individuals

Author

Abecasis, Goncalo, Baras, Aris, Cantor, Michael, Coppola, Giovanni, Economides, Aris, Lotta, Luca, Overton, John D., Reid, Jeffrey G., Shuldiner, Alan, Beechert, Christina, Forsythe, Caitlin, Fuller, Erin D., Gu, Zhenhua, Lattari, Michael, Lopez, Alexander, Schleicher, Thomas D., Padilla, Maria Sotiropoulos, Toledo, Karina, Widom, Louis, Wolf, Sarah E., Pradhan, Manasi, Manoochehri, Kia, Ulloa, Ricardo H., Bai, Xiaodong, Balasubramanian, Suganthi, Barnard, Leland, Blumenfeld, Andrew, Eom, Gisu, Habegger, Lukas, Hahn, Young, Hawes, Alicia, Khalid, Shareef, Maxwell, Evan K., Salerno, William, Staples, Jeffrey C., Yadav, Ashish, Jones, Marcus B., Mitnaul, Lyndon J., Kember, Rachel L., Merikangas, Alison K., Verma, Shefali S., Verma, Anurag, Judy, Renae, Damrauer, Scott M., Ritchie, Marylyn D., Rader, Daniel J., and Bućan, Maja

Published
2021
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14. Quercetin pentaacetate inhibits in vitro human respiratory syncytial virus adhesion

Author

Lopes, Bruno Rafael Pereira, da Costa, Mirian Feliciano, Genova Ribeiro, Amanda, da Silva, Tiago Francisco, Lima, Caroline Sprengel, Caruso, Icaro Putinhon, de Araujo, Gabriela Campos, Kubo, Leticia Hiromi, Iacovelli, Federico, Falconi, Mattia, Desideri, Alessandro, de Oliveira, Juliana, Regasini, Luis Octavio, de Souza, Fatima Pereira, and Toledo, Karina Alves

Published
2020
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20. pH-Dependence Cytotoxicity Evaluation of Artepillin C against Tumor Cells.

Author

Pazin, Wallance M., Miranda, Renata R., Toledo, Karina A., Kjeldsen, Frank, Constantino, Carlos J. L., and Brewer, Jonathan R.

Subjects
CYTOTOXINS, CELL imaging, PSEUDOPOTENTIAL method, CELL survival, TUMOR microenvironment, MEMBRANE lipids
Abstract

Brazilian green propolis is a well-known product that is consumed globally. Its major component, Artepillin C, showed potential as an antitumor product. This study explored the impact of Artepillin C on fibroblast and glioblastoma cell lines, used as healthy and very aggressive tumor cell lines, respectively. The focus of the study was to evaluate the pH-dependence of Artepillin C cytotoxicity, since tumor cells are known to have a more acidic extracellular microenvironment compared to healthy cells, and Artepillin C was shown to become more lipophilic at lower pH values. Investigations into the pH-dependency of Artepillin C (6.0–7.4), through viability assays and live cell imaging, revealed compelling insights. At pH 6.0, MTT assays showed the pronounced cytotoxic effects of Artepillin C, yielding a notable reduction in cell viability to less than 12% among glioblastoma cells following a 24 h exposure to 100 µM of Artepillin C. Concurrently, LDH assays indicated significant membrane damage, affecting approximately 50% of the total cells under the same conditions. Our Laurdan GP analysis suggests that Artepillin C induces autophagy, and notably, provokes a lipid membrane packing effect, contributing to cell death. These combined results affirm the selective cytotoxicity of Artepillin C within the acidic tumor microenvironment, emphasizing its potential as an effective antitumor agent. Furthermore, our findings suggest that Artepillin C holds promise for potential applications in the realm of anticancer therapies given its pH-dependence cytotoxicity. [ABSTRACT FROM AUTHOR]

Published
2023
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23. Application of natural rubber latex as scaffold for osteoblast to guided bone regeneration.

Author

Borges, Felipe Azevedo, de Barros, Natan Roberto, Garms, Bruna Cambraia, Miranda, Matheus Carlos Romeiro, Gemeinder, Jose Lucio Padua, Ribeiro‐Paes, João Tadeu, Silva, Rodrigo Ferreira, de Toledo, Karina Alves, and Herculano, Rondinelli Donizetti

Subjects
OSTEOBLASTS, GUIDED bone regeneration, HEVEA, WOUND healing, POROSITY, CELL adhesion, FOURIER transform infrared spectroscopy, BIOLOGICAL membranes
Abstract

ABSTRACT Natural rubber latex (NRL) from Hevea brasiliensis is a colloidal system composed of cis-1,4-polyisoprene. Its applications have grown due its angiogenic and wound healing activity. NRL has been used in guided bone regeneration as barrier, enhancing bone formation. However, there has been no study reported so far which shows its in vitro biocompatibility with osteoblasts. Thus, the aim of this work was to apply thermally induced phase separation under several temperatures to induce porosity in NRL; and test its mechanical properties, cytotoxicity, cell adhesion, and mineralization with MC3T3-E1. Only biomembranes submitted at −20 and −10 °C presented porosity. Fourier transform infrared spectroscopy showed no change in cis-1,4-isoprene spectra. Biomembranes were elastic (Young's modulus < 1 MPa). According to ISO10993-5, NRL showed no cytotoxicity. Cells adhered on the NRL and produced mineral matrix as analyzed by scanning electron microscopy-energy-dispersive spectrometry, von kossa, and Fourier transform infrared spectroscopy. Cells on NRL presented higher alkaline phosphatase activity, however, mineralization showed no difference by alizarin red S dye extraction. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45321. [ABSTRACT FROM AUTHOR]

Published
2017
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24. Eugenia aurata and Eugenia punicifolia HBK inhibit inflammatory response by reducing neutrophil adhesion, degranulation and NET release.

Author

Feliciano Costa, Mírian, Jesus, Tais Iara, Pereira Lopes, Bruno Rafael, Figueiredo Angolini, Célio Fernando, Montagnolli, Abner, de Paula Gomes, Lorraine, Sterle Pereira, Gabriela, Tasca Gois Ruiz, Ana Lucia, Carvalho, João Ernesto, Nogueira Eberlin, Marcos, dos Santos, Catarina, and Alves Toledo, Karina

Subjects
ENZYME analysis, ANALYTICAL biochemistry, ANIMAL experimentation, COLLECTION & preservation of biological specimens, CELL physiology, CELL surface antigens, IMMUNODIAGNOSIS, INFLAMMATION, MASS spectrometry, MICE, NEUTROPHILS, PROBABILITY theory, RESEARCH funding, STATISTICS, PHYTOCHEMICALS, PLANT extracts, DATA analysis, DATA analysis software, DESCRIPTIVE statistics, ONE-way analysis of variance
Abstract

Background: Eugenia spp. are used in popular medicine in the treatment of pain, diabetes, intestinal disorders and cough. The aim of the work is to evaluate, ex vivo and in vivo, the anti-inflammatory activity of the hydroethanolic extracts of the leaves of Eugenia aurata (EA) and Eugenia punicifolia HBK (EP) upon neutrophils. Methods: Ex vivo, isolated human neutrophils were sensitized by Eugenia extracts (0.1-1000 µg/mL) and stimulated by PMA. In these conditions, different neutrophil activities related to inflammatory process were measured: adhesion, degranulation and NET release. Neutrophil viability and tumor line cells were monitored. In vivo, neutrophil influx was evaluated by peritonitis model performed in mice pretreated with different concentrations of Eugenia extracts. Phytochemical profile was assessed by mass spectrometry. Results: Ex vivo, EA and EP (1000 µg/mL) reduced cell adhesion and degranulation, respectively. NET release was inhibited by EA and EP. Anti-inflammatory activities occurred in the absence of cytotoxicity. In vivo, both EA as EP inhibited neutrophil migration. The phytochemical profile revealed that EA contains myricitrin, rutin, quinic acid and quercetin derivatives. EP presents gallic acid, quercetin derivatives, syringic acid, ellagic acid, monogalloyl-glucose, glycosyringic acid, mudanoside B, HHDP glucose isomer and digalloylglucose isomer. EA and EP inhibit neutrophil migration by different pathways. Conclusion: Different chemical compositions may explain the anti-inflammatory effects described herein for EA and EP. Both extracts inhibit NET release but only EA reduces cell adhesion whereas EP decreases elastase secretion. This work contributes to the elucidation of cellular mechanisms related to the anti-inflammatory activity for leaves of E aurata and E punicifolia HBK. [ABSTRACT FROM AUTHOR]

Published
2016
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25. O USO DE HISTÓRIA EM QUADRINHOS NO ENSINO DE IMUNOLOGIA PARA EDUCAÇÃO BÁSICA DE NÍVEL MÉDIO.

Author

DE TOLEDO, KARINA ALVES, STELLA MAZALI, GABRIELA, ALVES PEGORARO, JULIANA, ORLANDO, JAQUELINE, and DE ALMEIDA, DANIEL MANZONI

Abstract

Teaching immunology in high school is still a challenge. How can we work the different types of cells and molecules which compose the immune system in biology classes? In this paper, we evaluated the use of immunology themed comics in biology classes. Our results indicated that the use of comics helped in the approach of the subject immunology over the different types of cells and molecules with the students. In conclusion, the use of comics in biology classes can help to approach and discuss complex topics such as immunology. [ABSTRACT FROM AUTHOR]

Published
2016
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26. Trypanosoma cruzi and Its Soluble Antigens Induce NET Release by Stimulating Toll-Like Receptors.

Author

Sousa-Rocha, Daniel, Thomaz-Tobias, Mariana, Diniz, Larissa Figueiredo Alves, Souza, Priscila Silva Sampaio, Pinge-Filho, Phileno, and Toledo, Karina Alves

Subjects
TRYPANOSOMA cruzi, PROTOZOAN antigens, NEUTROPHILS, TOLL-like receptors, AUTOIMMUNITY, HOSTS (Biology)
Abstract

Neutrophils release fibrous traps of DNA, histones, and granule proteins known as neutrophil extracellular traps (NETs), which contribute to microbicidal killing and have been implicated in autoimmunity. The role of NET formation in the host response to nonbacterial pathogens is not well-understood. In this study, we investigated the release of NETs by human neutrophils upon their interaction with Trypanosoma cruzi (Y strain) parasites. Our results showed that human neutrophils stimulated by T. cruzi generate NETs composed of DNA, histones, and elastase. The release occurred in a dose-, time-, and reactive oxygen species-dependent manner to decrease trypomastigote and increase amastigote numbers of the parasites without affecting their viability. NET release was decreased upon blocking with antibodies against Toll-like receptors 2 and 4. In addition, living parasites were not mandatory in the release of NETs induced by T. cruzi, as the same results were obtained when molecules from its soluble extract were tested. Our results increase the understanding of the stimulation of NETs by parasites, particularly T. cruzi. We suggest that contact of T. cruzi with NETs during Chagas’s disease can limit infection by affecting the infectivity/pathogenicity of the parasite. [ABSTRACT FROM AUTHOR]

Published
2015
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27. Biotransformed Soybean Extract Induces Cell Death of Estrogen-Dependent Breast Cancer Cells by Modulation of Apoptotic Proteins.

Author

Stocco, Bianca, Toledo, Karina A., Fumagalli, Helen F., Bianchini, Francine J., Fortes, Vanessa S., Fonseca, Maria José V., and Toloi, Maria Regina T.

Subjects
*BREAST tumor diagnosis, *DNA, *APOPTOSIS, *BIOLOGICAL assay, *BIOTECHNOLOGY, *BREAST tumors, *CELL death, *CELL physiology, *CELL receptors, *ESTROGEN, *FLOW cytometry, *HIGH performance liquid chromatography, *HORMONE therapy, *IMMUNOBLOTTING, *NUTRITION, *PROTEINS, *SOYBEAN, *STATISTICS, *PLANT extracts, *ISOFLAVONES, *PHYTOESTROGENS, *DATA analysis, *CONTROL groups, *GENISTEIN, *DESCRIPTIVE statistics, *PHYSIOLOGY
Abstract

The process of soybean biotransformation increases the quantity of isoflavones (daidzein and genistein), which besides being considered an alternative to estroprogestive hormone replacement therapy (HRT), are able of hindering the growth and development of tumor cells. We investigated the effects of soybean extract biotransformed by fungus on estrogen-dependent (MCF-7) and nondependent (SK-BR-3) breast cell lines. Cells were treated with different concentrations of biotransformed (BSE) and nonbiotransformed soybean extract (SE), or daidzein (D) and genistein (G) patterns isolated and in combination (D + G). Afterwards, we analyzed cell viability by MTT assay, phosphatidylserine exposure and cell permeability by flow cytometry; expression of apoptotic proteins by Western blotting. BSE promoted reduction in cell viability and increase in DNA degradation in both cell lines. In addition, we verified increase in cell permeability and in the expression of phosphatidylserine, as well as modulation in the expression of apoptotic proteins in MCF-7 cells. The cells did not show any signs of cell death when incubated with the controls (D, G, and D + G). Unknown components found in the BSE induce cell death by apoptosis and necrosis, mainly in MCF-7 cells. These processes depend on the activation of caspase-3 and involve an increase in the expression of proapoptotic molecules. [ABSTRACT FROM AUTHOR]

Published
2015
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28. Galectin-1 Exerts Inhibitory Effects during DENV-1 Infection.

Author

Toledo, Karina Alves, Fermino, Marise Lopes, Andrade, Camillo del Cistia, Riul, Thalita Bachelli, Alves, Renata Tomé, Muller, Vanessa Danielle Menjon, Russo, Raquel Rinaldi, Stowell, Sean R., Cummings, Richard D., Aquino, Victor Hugo, and Dias-Baruffi, Marcelo

Subjects
*DENGUE, *PREVENTIVE medicine, *GALECTINS, *VIRAL vaccines, *RNA viruses, *VIRAL replication, *HOST-parasite relationships, *IN vitro studies
Abstract

Dengue virus (DENV) is an enveloped RNA virus that is mosquito-transmitted and can infect a variety of immune and non-immune cells. Response to infection ranges from asymptomatic disease to a severe disorder known as dengue hemorrhagic fever. Despite efforts to control the disease, there are no effective treatments or vaccines. In our search for new antiviral compounds to combat infection by dengue virus type 1 (DENV-1), we investigated the role of galectin-1, a widely-expressed mammalian lectin with functions in cell-pathogen interactions and immunoregulatory properties. We found that DENV-1 infection of cells in vitro exhibited caused decreased expression of Gal-1 in several different human cell lines, suggesting that loss of Gal-1 is associated with virus production. In test of this hypothesis we found that exogenous addition of human recombinant Gal-1 (hrGal-1) inhibits the virus production in the three different cell types. This inhibitory effect was dependent on hrGal-1 dimerization and required its carbohydrate recognition domain. Importantly, the inhibition was specific for hrGal-1, since no effect was observed using recombinant human galectin-3. Interestingly, we found that hrGal-1 directly binds to dengue virus and acts, at least in part, during the early stages of DENV-1 infection, by inhibiting viral adsorption and its internalization to target cells. To test the in vivo role of Gal-1 in DENV infection, Gal-1-deficient-mice were used to demonstrate that the expression of endogenous Galectin-1 contributes to resistance of macrophages to in vitro-infection with DENV-1 and it is also important to physiological susceptibility of mice to in vivo infection with DENV-1. These results provide novel insights into the functions of Gal-1 in resistance to DENV infection and suggest that Gal-1 should be explored as a potential antiviral compound. [ABSTRACT FROM AUTHOR]

Published
2014
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29. Dose-dependent effect of Resveratrol on bladder cancer cells: Chemoprevention and oxidative stress

Author

Stocco, Bianca, Toledo, Karina, Salvador, Mirian, Paulo, Michele, Koyama, Natália, and Torqueti Toloi, Maria Regina

Subjects
*RESVERATROL, *BLADDER cancer, *OXIDATIVE stress, *CHEMOPREVENTION, *DOSAGE forms of drugs, *BCL-2 proteins, *MEMBRANE permeability (Biology)
Abstract

Abstract: Background: Over 6 million people die annually in the world because of cancer. Several groups are focused on studying cancer chemoprevention approaches. Resveratrol, a polyphenol, at high dosages, has been reported as antitumor and chemopreventive. However, it has a dose-dependent effect on cell death, even on some cancer cells. Objectives: Our aim was to investigate this dose-dependent effect on human bladder carcinoma ECV304 cells during oxidative stress condition. Methods: For this purpose, ECV304 cells incubated with different Resveratrol concentrations were analyzed as for their metabolic rate, membrane permeability, DNA fragmentation, anti/proapoptotic protein levels and phosphatidylserine exposure after oxidative stress. Results: Resveratrol induced cell death at high concentrations (>20μM), but not at low ones (0.1–20μM). Pretreatment with 2.5μM protected the cells from oxidative damage, whereas 50μM intensified the cell death and significantly increased Bad/Bcl-2 ratio (proapoptotic/antiapoptotic proteins). Resveratrol was able to modulate NO and PGE2 secretion and performed an anti-adhesion activity of neutrophils on PMA-activated ECV304 cells. Conclusions: Resveratrol at high doses induces cell death of ECV304 cells whereas low doses induce protection. Modulation of Bcl-2 protein induced by Resveratrol could be mediating this effect. This information about the role of Resveratrol on cancer alerts us about its dose-dependent effects and could lead the design of future chemoprevention strategies. [Copyright &y& Elsevier]

Published
2012
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30. LPS-Induced Galectin-3 Oligomerization Results in Enhancement of Neutrophil Activation.

Author

Fermino, Marise Lopes, Polli, Claudia Danella, Toledo, Karina Alves, Fu-Tong Liu, Hsu, Dan K., Roque-Barreira, Maria Cristina, Pereira-da-Silva, Gabriela, Bernardes, Emerson Soares, and Halbwachs-Mecarelli, Lise

Subjects
GALECTINS, PROTEIN binding, MACROPHAGES, MAST cells, BACTERIA, LIPOPOLYSACCHARIDES, CARBOHYDRATES
Abstract

Galectin-3 (Gal 3) is a glycan-binding protein that can be secreted by activated macrophages and mast cells at inflammation sites and plays an important role in inflammatory diseases caused by Bacteria and their products, such as lipopolysaccharides (LPS). Although it is well established that Gal 3 can interact with LPS, the pathophysiological importance of LPS/Gal 3 interactions is not fully understood. Data presented herein demonstrate for the first time that the interaction of Gal 3, either via its carbohydrate binding C-terminal domain or via its N-terminal part, with LPS from different bacterial strains, enhances the LPS-mediated neutrophil activation in vitro. Gal 3 allowed low LPS concentrations (1 μg/mL without serum, 1 ng/mL with serum) to upregulate CD11b expression and reactive oxygen species (ROS) generation on human neutrophils in vitro and drastically enhanced the binding efficiency of LPS to the neutrophil surface. These effects required LPS preincubation with Gal 3, before neutrophil stimulation and involved specific Gal 3/LPS interaction. A C-terminal Gal-3 fragment, which retains the lectin domain but lacks the N-terminal part, was still able to bind both to Escherichia coli LPS and to neutrophils, but had lost the ability to enhance neutrophil response to LPS. This result emphasizes the importance of an N-terminus-mediated Gal 3 oligomerization induced by its interaction with LPS. Finally we demonstrated that Balb/C mice were more susceptible to LPS-mediated shock when LPS was pretreated with Gal 3. Altogether, these results suggest that multimeric interactions between Gal 3 oligomers and LPS potentiate its proinflammatory effects on neutrophils. [ABSTRACT FROM AUTHOR]

Published
2011
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31. The macrophage-derived neutrophil chemotactic factor, MNCF: A lectin with TNF-α-like activities on neutrophils

Author

Toledo, Karina Alves, Pereira, Fernando Lourenço, Mambole, Agnès, Lesavre, Philippe, Roque-Barreira, Maria Cristina, and Halbwachs-Mecarelli, Lise

Subjects
*MACROPHAGES, *NEUTROPHILS, *INTERLEUKIN-8, *GRANULOCYTES
Abstract

Abstract: The macrophage-derived neutrophil chemotactic factor (MNCF) is an α-galactoside-binding lectin, known to induce dexamethasone-insensitive neutrophil recruitment. We further characterized MNCF effects on neutrophils and showed that it shares with TNF-α the ability to delay apoptosis and to trigger degranulation. MNCF and TNF-α effects show similar kinetics and involve Src kinases and MAPKinases dependent pathways. They were, however, clearly distinguished, since the soluble TNF-receptor etanercept prevented TNF but not MNCF effects, while melibiose disaccharide inhibited MNCF but not TNF effects. Absorption of MNCF on detoxi-gel did not alter its properties, precluding an LPS contamination effect. By contrast, galectin-3 required LPS to activate neutrophils. Specific antibodies allowed to further demonstrate that MNCF and galectin-3 are two distinct molecules. Finally, MNCF- and IL-8-induced neutrophil activation differed by their kinetic and sensitivity to pertussis toxin. In conclusion, MNCF is a distinct neutrophil agonist, with pro-inflammatory activities involving its carbohydrate recognition domain. [Copyright &y& Elsevier]

Published
2008
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32. Changing scientific communication.

Author

Toledo, Karina

Subjects
EXPERIMENTAL biology, RESEARCH, MEDICAL research, RESEARCH methodology
Abstract

The article focuses on the evaluation of the "PLoS One" journal by Eric Martens, senior editor of the journal, at a conference of the Federation of Experimental Biology Societies (Fesbe) held on August 21-24, 2014 in Brazil. It states that the journal aims to disseminate research from all fields of science and medicine. It discusses the problems of methodology and interpretation of results which lead to the rejection of an article in the journal.

Published
2013
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