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191 results on '"Stack, Austin"'

1. Putting the Pieces Together: Student Thinking about Transformations of Energy and Matter

Author

Bhatia, Kush S., Stack, Austin, Sensibaugh, Cheryl A., and Lemons, Paula P.

Abstract

Research on student thinking facilitates the design of instructional materials that build on student ideas. The pieces framework views student knowledge as consisting of independent pieces that students assemble in fluctuating ways based on the context at hand. This perspective affords important insights about the reasons students think the way they do. We used the pieces framework to investigate student thinking about the concept transformations of energy and matter with a specific focus on metabolism. We conducted think-aloud interviews with undergraduate introductory biology and biochemistry students as they solved a metabolism problem set. Through knowledge analysis, we identified two categories of knowledge elements cued during metabolism problem solving: (1) those about the visual representation of negative feedback inhibition; and (2) those pertaining to student focus on different metabolic compounds in a pathway. Through resource graph analysis, we found that participants tend to use knowledge elements independently and in a fluctuating way. Participants generally showed low representational competence. We recommend further research using the pieces perspective, including research on improving representational competence. We suggest that metabolism instructors teach metabolism as a concept, not a collection of example pathways, and explicitly instruct students about the meaning of visual representations associated with metabolism.

Published
2022
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3. Combination Treatment with Verinurad and Allopurinol in CKD: A Randomized Placebo and Active Controlled Trial

Author

Heerspink, Hiddo J.L., Stack, Austin G., Terkeltaub, Robert, Jongs, Niels, Inker, Lesley A., Bjursell, Magnus, Maklad, Noha, Perl, Shira, Eklund, Olof, Rikte, Tord, Sjöström, C. David, Perkovic, Vlado, Chmelickova, Hana, Lukac, Martin, Bucek, Petr, Drasnar, Tomas, Dussol, Bertrand, Guerrot, Dominique, Legrand, Eric, Boffa, Jean-Jacques, Halimi, Jean-Michel, Zaoui, Philippe, Letoha, Annamaria, Hajdu, Csaba, Pall, Denes, Peterfai, Eva, Csécsei, Gyöngyi, Bezzegh, Katalin, Deak, Laszlo, Konyves, Laszlo, Zsom, Marianna, Danos, Peter, Vangel, Sandor, Vasas, Szilard, Oroszlan, Tamas, Zilahi, Zsolt, Leiba, Adi, Grossman, Alon, Leibowitz, Avshalom, Itzhak, Baruch, Daoud, Deeb, Farber, Evgeny, Adawi, Faiad, Nakhoul, Farid M., Chernin, Gil, Kenis, Irina, Wainstein, Julio, Zeller, Lior, Elias, Mazen, Atar, Shaul, Frajewicki, Victor, Yagil, Yoram, Armaly, Zaher A., Esposito, Ciro, Viazzi, Francesca, Gambaro, Giovanni, Piatti, Piermarco, Bonadonna, Riccardo C., Arias Delgadillo, Cristhian Ronaldt, Flores, Fernando Jimenez, Aguilera Real, Manuel Enrique, Fajardo-Campos, Pedro, Violante Ortiz, Rafael Margarito, Luna Ceballos, Rosa Isela, Duran-Barragan, Sergio, Zytkiewicz-Jaruga, Danuta, Krzyzagorska, Ewa, Skokowska, Ewa, Klodawska, Katarzyna, Mordaka, Robert, Mazur, Stanislaw, Stasinska, Teresa, Sulowicz, Wladyslaw, Constantin, Ciprian, Negru, Doru, Paveliu, Fraga-Silvia, Negrisanu, Gabriela Doina, Szilagyi, Iosif, Busegeanu, Mihaela Magdalena G., Pena, Mihai Cosmin, Avram, Rodica Ioana, Ardelean, Silvia Luminita, Ilavska, Adriana, Dzupina, Andrej, Oroszova, Aniko, Kolesarova, Eva, Obetkova, Ida, Smatanova, Iveta, Babikova, Jana, Fulop, Peter, Haffner, Radovan, Rayner, Brian L., Kruger, Dawid Stephanus, Urbach, Dorothea Vera, Mitha, Essack, Vally Mahomed Latiff, Gulam Hoosain, Makan, Hemant, du Plessis, Hermanus, Jurgens, Jaco Cornelius, Reddy, Jeevren, Trokis, Julien S., McHarry, Kirsten, Distiller, Lawrence Allen, Mayet, Leila, Burgess, Lesley Jean, Van Zyl, Louis Johan, Joshi, Mukesh P., Sebastian, Peter John, Du Toit, Samantha Maria, Blignaut, Suzanne C., Serrano, Antonio Galan, Morales, Cristobal, Poch, Esteban, Mosquera, Eva Marquez, Castro, Fernando Cereto, Gonzalez Martinez, Francisco Javier, Perez- Contreras, Francisco Javier, Fernandez-Fresnedo, Gema, Garcia Mendez, Isabel Fuencisla, Perez, Jonay Pantoja, Martinez, Jordi Calabia, Gorriz Teruel, Jose Luis, Nieto Iglesias, Luis Javier, Munoz-Torres, Manuel, Munar Vila, Maria Antonia, Arenas Jimenez, Maria Dolores, Dominguez-Lopez, Marta E., Val, Miguel Hueso, Terrades, Natalia Ramos, Olmo, Rafael Santamaria, Malek Marin, Tamara Gelen, Arif, Ahmed A., Lee, Benjamin J., Mehta, Bhasker R., Baker, Bruce H., Jere, Charles S., Bains, David G., Stricklin, David G., Cheung, Deanna, Echeverri, Diego, Vera, Edgard, Heurich, Eva-Maria, Sterba, Gary A., Hernandez, German T., Paez, Henry E., Acosta, Idalia A., Ahmed, Intekhab, Sachmechi, Issac, Madu, Ivy-Joan E., Obhrai, Jagdeep Singh, Hammoud, Jamal A., Tumlin, James A., Cain, James, Moya-Hechevarria, Jaynier, Connaire, Jeffrey J., Haggiagi, Jehad, Odren, Jennifer A., Bellucci-Jackson, Jennifer M., Yan, Jieshi, Parker, John C., Tolins, Jonathan P., Gomez-Cortes, Jose D., Cardona, Jose F., Mandry, Jose M., Olivero, Juan Jorge, Hendon, Kendra S., Kaveh, Kianoosh, Kooienga, Laura A., Bermudez, Lidia R., Rich, Lisa M., Gold, Marina, Gonzalez, Marisela, Schaefer, Matthew E., Welch, Michelle, Moustafa, Moustafa A., Mussaji, Murtaza, Pergola, Pablo E., Phaosawasdi, Piangwarin, Silva, Ricardo A., Presas, Ricardo, Lynn, Robert I., Kronfli, Saeed J., Ventrapragada, Sailaja V., Niranjan, Sankar N., Husain, Sayed, Satko, Scott, Jabbour, Serge A., Rovner, Sergio F., Gouge, Steven F., Joshi, Sudhir S., Ramachandran Subramanian, Varagur Bala, Lane, Wendy, Calhoun, Wesley, and Durham, William

Published
2024
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4. Poor accordance to a DASH dietary pattern is associated with higher risk of ESRD among adults with moderate chronic kidney disease and hypertension.

Author

Banerjee, Tanushree, Crews, Deidra C, Tuot, Delphine S, Pavkov, Meda E, Burrows, Nilka Rios, Stack, Austin G, Saran, Rajiv, Bragg-Gresham, Jennifer, Powe, Neil R, and Centers for Disease Control and Prevention Chronic Kidney Disease Surveillance Team

Subjects
Centers for Disease Control and Prevention Chronic Kidney Disease Surveillance Team, Humans, Kidney Failure, Chronic, Hypertension, Disease Progression, Glomerular Filtration Rate, Nutrition Surveys, Incidence, Risk Factors, Patient Compliance, Blood Pressure, Aged, Aged, 80 and over, Middle Aged, Female, Male, Renal Insufficiency, Chronic, Dietary Approaches To Stop Hypertension, CKD, ESRD, diabetes, diet, Clinical Research, Kidney Disease, Cardiovascular, Prevention, Nutrition, Renal and urogenital, Clinical Sciences, Urology & Nephrology
Abstract

The Dietary Approaches to Stop Hypertension (DASH) diet lowers blood pressure, an important risk factor for chronic kidney disease (CKD) and end-stage renal disease (ESRD). However, it is unclear whether adherence to a DASH diet confers protection against future ESRD, especially among those with pre-existing CKD and hypertension. We examined whether a DASH diet is associated with lower risk of ESRD among 1,110 adults aged ≥ 20 years with hypertension and CKD (estimated glomerular filtration rate, eGFR 30-59 ml/min/1.73 m2) enrolled in the National Health and Nutrition Examination Survey (1988-1994). Baseline DASH diet accordance score was assessed using a 24-hour dietary recall questionnaire. ESRD was ascertained by linkage to the U.S. Renal Data System registry. We used the Fine-Gray competing risks method to estimate the relative hazard (RH) for ESRD after adjusting for sociodemographics, clinical and nutritional factors, eGFR, and albuminuria. Over a median follow-up of 7.8 years, 18.4% of subjects developed ESRD. Compared to the highest quintile of DASH diet accordance, there was a greater risk of ESRD among subjects in quintiles 1 (RH=1.7; 95% CI 1.1-2.7) and 2 (RH 2.2; 95% CI 1.1-4.1). Significant interactions were observed with diabetes status and race/ethnicity, with the strongest association between DASH diet adherence and ESRD risk observed in individuals with diabetes and in non-Hispanic blacks. Low accordance to a DASH diet is associated with greater risk of ESRD in adults with moderate CKD and hypertension, particularly in non-Hispanic blacks and persons with diabetes.

Published
2019

10. Differential long‐term impact of primary glomerular diseases on major outcomes: All are not equal!

Author

Stack, Austin G.

Subjects
*KIDNEY glomerulus diseases, *NOSOLOGY, *MAJOR adverse cardiovascular events, *FOCAL segmental glomerulosclerosis, *KIDNEY failure
Abstract

The article in the Journal of Internal Medicine discusses the differential long-term impact of primary glomerular diseases on major outcomes, highlighting the need for precision in disease classification and treatment. The study by Faucon et al. analyzes the long-term outcomes of four common primary glomerular diseases, revealing significant variations in hospitalization, death, and kidney replacement therapy risks. The research emphasizes the importance of registry-based platforms in understanding the diverse outcomes of glomerular diseases and their treatments in real-world settings, contributing to the evolving landscape of nephrology and precision medicine. [Extracted from the article]

Published
2025
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12. Poor accordance to a DASH dietary pattern is associated with higher risk of ESRD among adults with moderate chronic kidney disease and hypertension

Author

Powe, Neil, Banerjee, Tanushree, Tuot, Delphine, Hsu, Chi-yuan, McCulloch, Charles, Crews, Deidra, Hsu, Raymond, Grubbs, Vanessa, Bibbins-Domingo, Kirsten, Shlipak, Michael, Peralta, Carmen, Rubinsky, Anna, Coresh, Josef, Saran, Rajiv, Shahinian, Vahakn, Gillespie, Brenda, Morgenstern, Hal, Heung, Michael, Herman, William, McClellan, William, Bragg-Gresham, Jennifer, Steffick, Diane, Tilea, Anca, Yin, Maggie, Robinson, Ian, Zivin, Kara, Kurtz, Vivian, Wyncott, April, Burrows, Nilka Ríos, Eberhardt, Mark, Geiss, Linda, Mondesire, Juanita, Moore, Bernice, Patel, Priti, Pavkov, Meda, Rolka, Deborah, Saydah, Sharon, Shrestha, Sundar, Waller, Larry, Crews, Deidra C., Tuot, Delphine S., Pavkov, Meda E., Burrows, Nilka Rios, Stack, Austin G., and Powe, Neil R.

Published
2019
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13. Atrasentan and renal events in patients with type 2 diabetes and chronic kidney disease (SONAR): a double-blind, randomised, placebo-controlled trial

Author

Elbert, Alicia, Vallejos, Augusto, Alvarisqueta, Andres, Maffei, Laura, Juncos, Luis, de Arteaga, Javier, Greloni, Gustavo, Farias, Eduardo, Zucchini, Alfredo, Vogel, Daniel, Cusumano, Ana, Santos, Juan, Fraenkel, Margaret, Gallagher, Martin, Davis, Tim, Acharya, Shamasunder, Cooke, Duncan, Suranyi, Michael, Roger, Simon, Toussaint, Nigel, Pollock, Carol, Chan, Doris, Stranks, Stephen, MacIsaac, Richard, Endre, Zoltan, Schmidt, Alice, Prager, Rudolf, Mayer, Gert, Warling, Xavier, Jadoul, Michel, Hougardy, Jean, Vercammen, Chris, Van Vlem, Bruno, Gillard, Pieter, Costa e Forti, Adriana, Borges, Joao Lindolfo, Santos Canani, Luis, Eliaschewitz, Freddy, Leite, Silmara, Fraige Filho, Fadlo, Paschoalin, Raphael, Moura Neto, Jose Andrade, Deboni, Luciane, de Lourdes Noronha, Irene, Cercato, Cintia, Prompt, Carlos Alberto, Zanella, Maria, Rassi, Nelson, D'Avila, Domingos, Milagres, Rosangela, Felicio, Joao, Pecoits Filho, Roberto, Riella, Miguel Carlos, Salles, Joao, Keitel, Elizete, Draibe, Sergio, Amodeo, Celso, Youmbissi, Joseph, Roy, Louise, Cournoyer, Serge, Jolly, Shivinder, Pichette, Vincent, Nesrallah, Gihad, Bajaj, Harpreet Singh, Khandwala, Hasnain, Aronson, Ronnie, Goluch, Richard, Tam, Paul, Rabbat, Christian, Tobe, Sheldon, Bailey, Gordon, Chow, Stephen, Castillo, Alvaro, Danin Vargas, Alfredo, Gonzalez, Fernando, Munoz, Rodrigo, Gutierrez, Vicente, Godoy, Gonzalo, Zhao, Hongwen, Liu, Zhangsuo, Zhao, Minghui, Guo, Xiaohui, Su, Benli, Fu, Shuxia, Xu, Yan, Yang, Jinkui, Shi, Bingyin, Xiao, Guanqing, Shi, Wei, Hao, Chuanming, Xing, Changying, Hou, Fanfan, Luo, Qun, Li, Yuxiu, Ji, Linong, Zuo, Li, Wang, Song, Ni, Zhaohui, Ding, Guohua, Chen, Nan, Zhao, Jiajun, Jia, Weiping, Yu, Shengqiang, Weng, Jian, Xu, Gang, Fu, Ping, Sun, Shiren, Liu, Bicheng, Ding, Xiaoqiang, Rychlik, Ivan, Oplustilova, Alexandra, Bartaskova, Dagmar, Honova, Vaclava, Chmelickova, Hana, Petr, Martin, Bucek, Petr, Tesar, Vladimir, Zahumensky, Emil, Povlsen, Johan, Egstrup, Kenneth, Oczachowska-Kulik, Anna, Rossing, Peter, Lahtela, Jorma, Strand, Jorma, Kantola, Ilkka, Petit, Catherine, Combe, Christian, Zaoui, Philippe, Esnault, Vincent, Urena Torres, Pablo, Halimi, Jean-Michel, Dussol, Bertrand, Bieler, Tasso, Budde, Klemens, Dellanna, Frank, Segiet, Thomas, Kosch, Christine, Schmidt-Guertler, Hans, Schenkenberger, Isabelle, Vielhauer, Volker, Pistrosch, Frank, Alscher, Mark, Hasslacher, Christoph, Hugo, Christian, Muehlfeld, Anja, Wanner, Christoph, Passadakis, Ploumis, Apostolou, Theofanis, Tentolouris, Nikolaos, Stefanidis, Ioannis, Mavromatidis, Konstantinos, Liakopoulos, Vasilios, Goumenos, Dimitrios, Siamopoulos, Konstantinos, Yeung, Vincent, Ozaki, Risa, Fung, Samuel, Tan, Kathryn, Tang, Sydney, Lui, Sing Leung, Cheung, Siu Fai, Sreenan, Seamus, Eustace, Joseph, O'Shea, Donal, Lavin, Peter, Stack, Austin, Yagil, Yoram, Wainstein, Julio, Knobler, Hilla, Cohen, Josef, Kenis, Irina, Daoud, Deeb, Bar-Dayan, Yosefa, Frajewicki, Victor, Adawi, Faiad, Gesualdo, Loreto, Santoro, Domenico, Marino, Francesco, Galfre, Andrea, Brunati, Chiara, Ruggenenti, Piero, Rombola, Giuseppe, Pugliese, Giuseppe, Ravera, Maura, Malberti, Fabio, Pontoriero, Giuseppe, Rampino, Teresa, De Cosmo, Salvatore, Esposito, Ciro, Nappi, Felice, Abaterusso, Cataldo, Conte, Giuseppe, Panichi, Vincenzo, Lauro, Davide, Capasso, Giovambattista, Russo, Domenico, Anzai, Jiichi, Naka, Motoji, Ato, Keita, Tsujimoto, Tetsuro, Nimura, Toshinori, Nakashima, Eitaro, Takeda, Tetsuro, Fujii, Shinya, Kobayashi, Kunihisa, Iwaoka, Hideaki, Nagayama, Koji, Harada, Hiroyuki, Maeda, Hajime, Kishimoto, Rui, Iitsuka, Tadashi, Itabashi, Naoki, Furuya, Ryuichi, Maeda, Yoshitaka, Yamada, Daishiro, Sasaki, Nobuhiro, Sasaki, Hiromitsu, Ueda, Shinichiro, Kashihara, Naoki, Watanabe, Shuichi, Nakamura, Takehiro, Kanai, Hidetoshi, Makita, Yuichiro, Ono, Keiko, Iehara, Noriyuki, Goto, Daisuke, Kosuge, Keiichiro, Tsuchida, Kenichi, Sato, Toshiaki, Sekikawa, Takashi, Okamoto, Hideki, Tanaka, Tsuyoshi, Ikeda, Naoko, Tadika, Takenobu, Mukasa, Koji, Osonoi, Takeshi, Hirano, Fuminori, Nishimura, Motonobu, Yambe, Yuko, Tanaka, Yukio, Ujihara, Makoto, Sakai, Takashi, Imura, Mitsuo, Umayahara, Yutaka, Makino, Shinya, Nakazawa, Jun, Yamaguchi, Yukinari, Kashine, Susumu, Miyaoka, Hiroaki, Suzuki, Katsunori, Inoue, Toshihiko, Nagai, Sou, Sato, Nobuyuki, Yamamoto, Masahiro, Taya, Noriyasu, Fujita, Akira, Matsutani, Akira, Shibagaki, Yugo, Sato, Yuichi, Yamauchi, Akira, Tsutsui, Masahiro, Ishiko, Tamayo, Kaneko, Shizuka, Azuma, Nobuyuki, Matsuda, Hirofumi, Hashiguchi, Yasuhiro, Onishi, Yukiko, Tokui, Mikiya, Matsuhisa, Munehide, Kiyosue, Arihiro, Shinoda, Junji, Ishikawa, Kazuo, Ahmad, Ghazali, Vijayasingham, Shalini, Aziz, Nor Azizah, Hussein, Zanariah, Fung, Yin Khet, Hassan, Wan Hasnul Halimi Wan, Wong, Hin Seng, Goh, Bak Leong, Ali, Norhaliza Mohd, Merican, Nor Shaffinaz Yusuf Azmi, Vaithilingam, Indralingam, Nik Ahmad, Nik Nur Fatnoon, Adam, Noor, Sukor, Norlela, Vengadasalam, V Paranthaman P, Abdul Kadir, Khalid, Mohamed, Mafauzy, Renoirte Lopez, Karina, Leguizamo-Dimas, Aniceto, Chew Wong, Alfredo, Chevaile-Ramos, Jose, Gonzalez Gonzalez, Jose, Rico Hernandez, Raul, Nino-Cruz, Jose, Sauque Reyna, Leobardo, Gonzalez-Galvez, Guillermo, Madero Rovalo, Magdalena, Bochicchio-Ricardelli, Tomasso, Aldrete, Jorge, Carranza-Madrigal, Jaime, Vogt, Liffert, Smak Gregoor, Peter, Barendregt, JNM, Luik, Peter, Gansevoort, Ronald, Laverman, Gozewijn, Pilmore, Helen, Lunt, Helen, Baker, John, Miller, Steven, Rabindranath, Kannaiyan, Zapata-Rincon, Luis, Vargas-Gonzales, Rolando, Calderon Ticona, Jorge, Dextre Espinoza, Augusto, Burga Nunez, Jose, Zea-Nunez, Carlos Antonio, Herrada Orue, Benjamin, Medina-Santander, Boris, Delgado-Butron, Cesar, Farfan-Aspilcueta, Julio, Mazur, Stanislaw, Necki, Miroslaw, Wruk, Michal, Klodawska, Katarzyna, Popenda, Grazyna, Skokowska, Ewa, Arciszewska, Malgorzata, Wiecek, Andrzej, Ciechanowski, Kazimierz, Nowicki, Michal, Birne, Rita, Cabrita, Antonio, Ramos, Aura, Antunes Ferreira, Manuel Anibal, Matta Fontanet, Evelyn, Alcantara-Gonzalez, Altagracia Aurora, Comulada-Rivera, Angel, Galindo Ramos, Eugenia, Cangiano, Jose, Quesada-Suarez, Luis, Calderon Ortiz, Ricardo, Vazquez-Tanus, Jose, Burgos-Calderon, Rafael, Rosado, Carlos, Hancu, Nicolae, Pintilei, Ella, Mistodie, Cristina, Bako, Gabriel, Ionutiu, Lavinia, Petrica, Ligia, Timar, Romulus, Tuta, Liliana, Duma, Livia, Tutescu, Adriana, Ivanova, Svetlana, Essaian, Ashot, Zrazhevskiy, Konstantin, Tomilina, Natalia, Smolyarchuk, Elena, Kuzin, Anatoly, Lantseva, Olga, Karpova, Irina, Shamkhalova, Minara, Liberanskaya, Natalia, Yavdosyuk, Andrey, Shvarts, Yuri, Bardymova, Tatiana, Blagoveshchenskaya, Olga, Solovev, Oleg, Rechkova, Elena, Pikalova, Natalia, Pavlova, Maria, Kolmakova, Elena, Sayfutdinov, Rustam, Villevalde, Svetlana, Koziolova, Natalya, Martynenko, Vladimir, Marasaev, Vyacheslav, Maksudova, Adelya, Sigitova, Olga, Mordovin, Viktor, Klimontov, Vadim, Samoylova, Yulia, Karonova, Tatiana, Yeoh, Lee Ying, Teo, Boon Wee, Foo, Marjorie Wai Yin, Liew, Adrian, Tkac, Ivan, Oroszova, Aniko, Fekete, Jozef, Rosenberger, Jaroslav, Obetkova, Ida, Fulopova, Alla, Kolesarova, Eva, Raslova, Katarina, Smolko, Peter, Oksa, Adrian, Distiller, Larry, Trokis, Julien, Adams, Luthando, Makan, Hemant, Ramlachan, Padaruth, Mitha, Essack, Coetzee, Kathleen, Punt, Zelda, Bhorat, Qasim, Naiker, Puvenesvari, Ellis, Graham, Van Zyl, Louis, Lee, Kwan Woo, Kim, Min Seon, Yoo, Soon-Jib, Yoon, Kun Ho, Cho, Yong-Wook, Park, Tae-Sun, Kim, Sang Yong, Choi, Moon-Gi, Oh, Tae Keun, Lee, Kang-Wook, Shon, Ho Sang, Suh, Sung Hwan, Kim, Byung-Joon, Doo-Man, Kim, Yi, Joo Hark, Lee, Sang Ah, Cho, Ho Chan, Kim, Sin-Gon, Cha, Dae-Ryong, Seo, Ji A, Choi, Kyung Mook, Woo, Jeong-Taek, Ahn, Kyu Jeung, Lee, Jae Hyuk, Kim, In-Joo, Lee, Moon-Kyu, Jang, Hak Chul, Park, Kyong-Soo, Kim, Beom Seok, Mok, Ji Oh, Shin, Mijung, Yoon, Sun Ae, Nam-Goong, Il-Seong, Chung, Choon Hee, Yu, Tae Yang, Lee, Hyoung Woo, Soto Gonzalez, Alfonso, Almirall, Jaume, Egido, Jesus, Calero Gonzalez, Francesca, Fernandez Fresnedo, Gema, Valera Cortes, Ildefonso, Praga Terente, Manuel, Garcia Mendez, Isabel, Navarro Gonzalez, Juan, Herrero Calvo, Jose, Cigarran Guldris, Secundino, Prieto Velasco, Mario, Minguela Pesquera, Jose Ignacio, Galan, Antonio, Pascual, Julio, Marques Vidas, Maria, Martins Munoz, Judith, Rodriguez-Perez, Jose, Castro-Alonso, Cristina, Bonet Sol, Josep, Seron, Daniel, Fernandez Giraldez, Elvira, Arrieta Lezama, Javier, Montero, Nuria, Hernandez-Jaras, Julio, Santamaria Olmo, Rafael, Molas Coten, Jose Ramon, Hellberg, Olof, Fellstrom, Bengt, Bock, Andreas, Pei, Dee, Lin, Ching-Ling, Tien, Kai-Jen, Chen, Ching-Chu, Huang, Chien-Ning, Jiang, Ju-Ying, Wu, Du-An, Chu, Chih-Hsun, Tseng, Shih-Ting, Chen, Jung-Fu, Bau, Cho-Tsan, Sheu, Wayne, Wu, Mai-Szu, Sari, Ramazan, Sezer, Siren, Yildiz, Alaattin, Satman, Ilhan, Kalender, Betul, Mankovskyy, Borys, Fushtey, Ivan, Stanislavchuk, Mykola, Kolenyk, Mykola, Dudar, Iryna, Zolotaikina, Viktoriia, Abrahamovych, Orest, Kostynenko, Tetyana, Petrosyan, Olena, Kuskalo, Petro, Galushchak, Olga, Legun, Oleg, Topchii, Ivan, Martynyuk, Liliya, Stryzhak, Vasyl, Panina, Svitlana, Tkach, Sergii, Korpachev, Vadym, Maxwell, Peter, Gnudi, Luigi, Kon, Sui Phin, Tindall, Hilary, Kalra, Phillip, Mark, Patrick, Patel, Dipesh, El-Shahawy, Mohamed, Bai, Liqun, Nica, Romanita, Lien, Yeong-Hau, Menefee, Judson, Busch, Robert, Miller, Alan, Ahmed, Azazuddin, Arif, Ahmed, Lee, Joseph, Desai, Sachin, Bansal, Shweta, Bentsianov, Marie, Belledonne, Mario, Jere, Charles, Gaona, Raul, Greenwood, Gregory, Brusco, Osvaldo, Boiskin, Mark, Belo, Diogo, Minasian, Raffi, Atray, Naveen, Lawrence, Mary, Taliercio, John, Pergola, Pablo, Scott, David, Alvarez, German, Marder, Bradley, Powell, Thomas, Bakdash, Wa'el, Stoica, George, McFadden, Christopher, Rendell, Marc, Wise, Jonathan, Jones, Audrey, Jardula, Michael, Madu, Ivy-Joan, Varghese, Freemu, Tulloch, Brian, Ahmed, Ziauddin, Hames, Melanie, Nazeer, Imran, Shahid, Newman, John, Rekha, Montero, Manuel, Fitz-Patrick, David, Phillips, Lawrence, Guasch, Antonio, Christofides, Elena, Gundroo, Aijaz, Amin, Mohammad, Bowman-Stroud, Cynthia, Link, Michael, Mulloy, Laura, Nammour, Michael, Lalwani, Tarik, Hanson, Lenita, Whaley-Connell, Adam, Herman, Lee, Chatha, Rupi, Osama, Sayed, Liss, Kenneth, Kayali, Zeid, Bhargava, Anuj, Israel, Ezra, Peguero-Rivera, Alfredo, Fang, Michael, Slover, Judith, Barengolts, Elena, Flores, Jose, Muoneke, Rosemary, Savin, Virginia, Awua-Larbi, Stella, Levine, Andrew, Newman, George, Golestaneh, Laden, Bohm, Guillermo, Reisin, Efrain, Cruz, Lucita, Weiss, Robert, Zieve, Franklin, Horwitz, Edward, Chuang, Peale, Mersey, James, Manley, John, Graf, Ronald, Bedros, Fadi, Joshi, Sudhir, Frias, Juan, Assefi, Ali, O'Shaughnessy, Andrew, Brantley, Roman, Minga, Todd, Tietjen, David, Kantor, Samuel, Jamal, Aamir, Guadiz, Ramon, Hershon, Kenneth, Bressler, Peter, Kopyt, Nelson, Cathcart, Harold, Bloom, Scott, Reichel, Ronald, Nakhle, Samer, Dulude, Emily, Tarkan, Joshua, Baker, Penelope, Zeig, Steven, Moya Hechevarria, Jaynier, Ropero-Cartier, Armando, De la Calle, Gilda, Doshi, Ankur, Saba, Fadi, Sligh, Teresa, Shaw, Sylvia, Kumar, Jayant, Szerlip, Harold, Bayliss, George, Perlman, Alan, Sakhrani, Lakhi, Gouge, Steven, Argoud, Georges, Acosta, Idalia, Elder, John, Joshi, Sucharit, Sensenbrenner, John, Vicks, Steven, Mangoo-Karim, Roberto, Galphin, Claude, Leon-Forero, Carlos, Gilbert, John, Brown, Eric, Ijaz, Adeel, Butt, Salman, Markell, Mariana, Arauz-Pacheco, Carlos, Sloan, Lance, Alvarado, Odilon, Jabbour, Serge, Simon, Eric, Rastogi, Anjay, James, Sam, Bakris, George, Hall, Karen, Melish, John, Dixon, Brad, Adolphe, Allen, Kovesdy, Csaba, Beddhu, Srinivasan, Solomon, Richard, Fernando, Ronald, Levin, Ellis, Thakar, Charuhas, Robey, Brooks, Goldfarb, David, Fried, Linda, Maddukuri, Geetha, Thomson, Stephen, Annand, Andrew, Kronfli, Saeed, Kalirao, Paramjit, Schmidt, Rebecca, Dahl, Neera, Blumenthal, Samuel, Weinstein, Debra, Ostergaard, Ove, Weinstein, Talia, Ono, Yasuhiro, Yalcin, Murat, Karim, Shahana, Heerspink, Hiddo J L, Parving, Hans-Henrik, Andress, Dennis L, Correa-Rotter, Ricardo, Hou, Fan-Fan, Kitzman, Dalane W, Kohan, Donald, Makino, Hirofumi, McMurray, John J V, Melnick, Joel Z, Miller, Michael G, Pergola, Pablo E, Perkovic, Vlado, Yi, Tingting, Wigderson, Melissa, and de Zeeuw, Dick

Published
2019
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14. Prevalence, awareness, treatment, and control of hypertension in community-dwelling older adults with chronic kidney disease: the Irish longitudinal study on ageing.

Author

Browne, Leonard D, Alamin, Mohammed Y, Miri, Hamid H, Hall, Robert, Tandan, Meera, Sexton, Donal, and Stack, Austin G

Subjects
DIASTOLIC blood pressure, SYSTOLIC blood pressure, ANTIHYPERTENSIVE agents, BLOOD pressure, CHRONIC kidney failure
Abstract

Background Hypertension is highly prevalent in chronic kidney disease (CKD), posing a significant but modifiable risk for adverse clinical outcomes. This study explored the prevalence, awareness, treatment, and control of hypertension in older Irish adults with CKD. Methods Data were analysed from participants in Wave 1 of The Irish Longitudinal Study on Ageing (TILDA) who were aged 50 years and older. CKD was defined as eGFR <60 ml/min/1.72 m2, hypertension defined as systolic blood pressure (SBP) ≥140 mmHg and/or diastolic blood pressure (DBP) ≥90 mmHg and/or self-reported use of antihypertensive medication. Participant awareness and treatment of hypertension was based on self-report and SBP/DBP <140/90 mmHg. Multivariable logistic regression examined relationships with awareness, treatment, and control of hypertension expressed as adjusted odds ratios. Results Prevalence of hypertension was significantly higher in participants with CKD than without (81.9% vs 59.7%, P < .001). Among hypertensive individuals, 70.1% (95% CI: 65.8–74.1) were aware, 83.5% (95% CI 80.0–86.6) were on treatment, yet blood pressure control <140/90 mmHg and SBP <120 mmHg were achieved in only 49.3% (CI 44.0–54.7%) and 17.9% (CI 14.4–22.1), respectively. In multivariable analysis, advancing age 1.05 (CI 1.01–1.10), obesity 6.23 (CI 2.51–15.5), diabetes 5.78 (CI 1.55–21.5), and cardiovascular disease 9.89 (CI 3.27–29.9) were associated with higher odds of treatment, while cardiovascular disease 2.35 (CI 1.39–3.99) and combination antihypertensive therapy 1.76 (CI 1.03–3.01) were associated with blood pressure control. Conclusion The prevalence of hypertension is substantial in older Irish adults with CKD; however, control is poor. Approximately, one-third of participants were unaware of their hypertensive status and approximately one-fifth were untreated. [ABSTRACT FROM AUTHOR]

Published
2024
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15. Prevalence of anaemia, iron, and vitamin deficiencies in the health system in the Republic of Ireland: a retrospective cohort study.

Author

Clancy, Conor Cian, Browne, Leonard D., Gilligan, Robert, Blake, Ophelia, and Stack, Austin G.

Subjects
DIAGNOSIS of deficiency diseases, ANEMIA, IRON deficiency anemia, IRON, IRON in the body, RESEARCH funding, TRANSFERRIN, FERRITIN, VITAMIN B12 deficiency, KRUSKAL-Wallis Test, FISHER exact test, LOGISTIC regression analysis, SEX distribution, FOLIC acid, RETROSPECTIVE studies, DESCRIPTIVE statistics, CHI-squared test, MULTIVARIATE analysis, AGE distribution, SEVERITY of illness index, LONGITUDINAL method, ODDS ratio, MEDICAL records, ACQUISITION of data, MEDICAL screening, FOLIC acid deficiency, CONFIDENCE intervals, DATA analysis software, KIDNEY diseases, VITAMIN deficiency, GLOMERULAR filtration rate, DISEASE risk factors
Abstract

Background: Anaemia is a common but treatable condition that predicts adverse clinical outcomes. However, standards of anaemia management vary considerably. Aim: To estimate the prevalence of anaemia and extent of screening for common underlying causes in the healthcare system in the Republic of Ireland. Design & setting: We conducted a retrospective cohort study of 112 181 adult patients, aged ≥18 years, who had a full blood count performed in 2013, using data from the National Kidney Disease Surveillance System. Method: The prevalence of anaemia was determined across demographic and clinical subgroups, according to World Health Organization (WHO) definitions. The proportion screened for iron, vitamin B12, and folate deficiency was determined within a 3-month follow-up period and the corresponding prevalence for each deficiency determined. Results: The overall prevalence of anaemia was 12.0% (95% confidence interval [CI] = 11.8% to 12.2%) and was higher in women than men (13.2% versus 10.5%, P<0.001). Anaemia increased with advancing age (33.4% for those aged >75 years) and worsening kidney function (8.2%, 10.9%, 33.2%, and 63.8% for each estimated glomerular filtration rate [eGFR] categories >90, 60–89, 30–59 and <30 ml/min/1.73 m², respectively, P<0.001). After 3-months' follow-up, the proportion screened for iron deficiency was 11.2% based on transferrin saturation and 33.7% using serum ferritin. Screening for folate and B12 deficiency was 17.6% and 19.8%, respectively. Among screened patients, the prevalence of iron deficiency, B12, and folate deficiency was 37.0%, 6.3%, and 5.8%, respectively. Conclusion: The burden of anaemia in the healthcare system is substantial especially for older patients and those with advanced kidney disease. Low screening rates for iron, B12, and folate deficiency are common and warrant quality improvement initiatives. [ABSTRACT FROM AUTHOR]

Published
2024
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32. Rationale, design, demographics and baseline characteristics of the randomized, controlled, Phase 2b SAPPHIRE study of verinurad plus allopurinol in patients with chronic kidney disease and hyperuricaemia.

Author

Heerspink, Hiddo J L, Stack, Austin G, Terkeltaub, Robert, Greene, Tom A, Inker, Lesley A, Bjursell, Magnus, Perl, Shira, Rikte, Tord, Erlandsson, Fredrik, and Perkovic, Vlado

Subjects
*CHRONIC kidney failure, *CHRONICALLY ill, *HYPERURICEMIA, *ALLOPURINOL, *TYPE 2 diabetes
Abstract

Background Verinurad is a human uric acid (UA) transporter (URAT1) inhibitor known to decrease serum UA (sUA) levels and that may reduce albuminuria. In a Phase 2a study (NCT03118739), treatment with verinurad + febuxostat lowered urine albumin-to-creatinine ratio (UACR) at 12 weeks by 39% (90% confidence interval 4–62%) among patients with Type 2 diabetes mellitus, hyperuricaemia and albuminuria. The Phase 2b, randomized, placebo-controlled Study of verinurAd and alloPurinol in Patients with cHronic kIdney disease and hyperuRicaEmia (SAPPHIRE; NCT03990363) will examine the effect of verinurad + allopurinol on albuminuria and estimated glomerular filtration rate (eGFR) slope among patients with chronic kidney disease (CKD) and hyperuricaemia. Methods Adults (≥18 years of age) with CKD, eGFR ≥25 mL/min/1.73 m2, UACR 30–5000 mg/g and sUA ≥6.0 mg/dL will be enrolled. Approximately 725 patients will be randomized 1:1:1:1:1 to 12, 7.5 or 3 mg verinurad + allopurinol, allopurinol or placebo. An 8-week dose-titration period will precede a 12-month treatment period; verinurad dose will be increased to 24 mg at Month 9 in a subset of patients in the 3 mg verinurad + allopurinol arm. The primary efficacy endpoint the is change from baseline in UACR at 6 months. Secondary efficacy endpoints include changes in UACR, eGFR and sUA from baseline at 6 and 12 months. Conclusions This study will assess the combined clinical effect of verinurad + allopurinol on kidney function in patients with CKD, hyperuricaemia and albuminuria, and whether this combination confers renoprotection beyond standard-of-care. [ABSTRACT FROM AUTHOR]

Published
2022
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50. Dapagliflozin Added to Verinurad Plus Febuxostat Further Reduces Serum Uric Acid in Hyperuricemia: The QUARTZ Study.

Author

Stack, Austin G., Han, David, Goldwater, Ronald, Johansson, Susanne, Dronamraju, Nalina, Oscarsson, Jan, Johnsson, Eva, Parkinson, Joanna, and Erlandsson, Fredrik

Subjects
CREATININE, URIC acid, DAPAGLIFLOZIN, SODIUM-glucose cotransporter 2 inhibitors, HYPERURICEMIA, BENZENE, PYRIDINE, RESEARCH, COMBINATION drug therapy, GOUT suppressants, RESEARCH methodology, GLYCOSIDES, MEDICAL cooperation, EVALUATION research, PROPIONATES, HYDROCARBONS, URICOSURIC agents, TREATMENT effectiveness, COMPARATIVE studies, RANDOMIZED controlled trials, CROSSOVER trials, ENZYME inhibitors
Abstract

Context: Combining a sodium-glucose cotransporter 2 inhibitor with a xanthine oxidase inhibitor (XOI) and a urate transporter 1 (URAT1) inhibitor may enhance serum uric acid (sUA) lowering. However, concerns exist regarding high urinary UA (uUA) excretion rates and subsequent crystallization in renal tubules.Objective: To assess whether dapagliflozin added to verinurad, a selective URAT1 inhibitor, and febuxostat, an XOI, increases uUA excretion.Design: Randomized, placebo-controlled, 2-way crossover study (NCT03316131).Patients: Adults with asymptomatic hyperuricemia.Interventions: Subjects (N = 36) were randomized to oral once-daily 9 mg verinurad plus 80 mg febuxostat plus 10 mg dapagliflozin for 7 days and 7 days of oral once-daily 9 mg verinurad plus 80 mg febuxostat plus placebo with an intervening 7- to 21-day washout period.Main Outcome Measure: Difference in peak uUA excretion between groups from baseline to day 7. Secondary outcomes included changes in sUA levels and 24-h uUA excretion.Results: Both regimens lowered mean peak uUA excretion (least squares mean changes from baseline: -12.9 mg/h [95% confidence interval (CI): -21.0 to -4.7], dapagliflozin; -13.2 mg/h [95% CI -21.3 to -5.0], placebo). sUA concentrations were lower with dapagliflozin (mean treatment difference -62.3 µmol/L [95% CI -82.8 to -41.8]). Dapagliflozin did not impact verinurad pharmacokinetics, its main metabolites, or febuxostat or fasting plasma glucose levels vs verinurad plus febuxostat. There were no clinically relevant changes in safety parameters.Conclusions: Dapagliflozin further reduced sUA without influencing uUA excretion, suggesting that its combination with verinurad and febuxostat at the doses tested does not adversely affect kidney function.Clinical Trial Registration Number: NCT03316131. [ABSTRACT FROM AUTHOR]

Published
2021
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