日期:
2020 年 — 2026 年
2020
2021
2022
2023
2024
2025
2026
影响因子:

Inhibitory Effects of Vandetanib on Catecholamine Synthesis in Rat Pheochromocytoma PC12 Cells.

凡德他尼对大鼠嗜铬细胞瘤PC12细胞儿茶酚胺合成的抑制作用

Itoh Yoshihiko, Inagaki Kenichi, Terasaka Tomohiro, Morimoto Eisaku, Ishii Takahiro, Yamaoka Kimitomo, Fujisawa Satoshi, Wada Jun

SAT-037 Sex- and Age-Dependent Regulation of the Glucose Receptor Adgrl1 in Mice

SAT-037 小鼠葡萄糖受体Adgrl1的性别和年龄依赖性调节

Honma, Sato; Kothapalli, Anusha; Patel, Nihar; Beth Hodge, Mary; Javeed, Iqra; Elias, Heather; Garcia-Banigan, Dinamarie Cruz; Upadhyay, Jagriti; Sperling, Scott; Agarwal, Arushi; Jalal, Erica; Levine, Alice C; Watts, Deepika; Song, Sarah; Ruf-Zamojski, Frederique Murielle; Melmed, Shlomo; Ben-Shlomo, Anat; Fathima, Madiha; Khan, Abid; Gilden, Janice; Lefevre, Etienne; Chasseloup, Fanny; Dormoy, alexandre; Deng, Shengyue; Ladurelle, Nathalie; Janot, Clement; Hage, Mirella; Hage, Mirella; Chappel, Kenny; Larabi, Amine; Claude Alvarez, Jean; Zizzari, Philippe; Bouligand, Jerome; Young, Jacques; Chanson, Philippe; Viengchareun, Say; Buchfelder, Michael; Kamenicky, Peter; Neff, Marisela; Foster, Joshua; Lin, Jack; Sharma, Nikita; Garcia, Eva; Sandhu, Jagteshwar; Hilborn, Erik; Rodgers, Steven; Hannoush, Zeina; Ayala, Alejandro; Miller, Zoe; Chacko, Shireen R; Saini, Jasmine; Sharma, Shubhangi Sharma; Ahmadian, Sarina; Achenbach, Sara J; Atkinson, Elizabeth; Fell, Vanessa; Van Gompel, Jamie J; Young, William F; Bancos, Irina; Gandhi, Charmi; Sankanagoudar, Shrimanjunath; Tiwari, Sarbesh; Garg, Mayank; Kumar Jha, Deepak; Shukla, Ravindra; Tran, Deanna H; Pham, Christopher; Carmichael, John D; Zada, Gabriel; Sisti, Jonathan; Ashouri, Diana; Nguyen, Caroline T; Pekmezci, Aslihan; Cil, Sanem; Karatay, Huseyin; Mert Dogukan, Fatih; Burhan, Sebnem; Said Cil, Mehmet; Cetin, Ecesu; Niyazoglu, Mutlu; Hatipoglu, Esra; Kałuża, Bernadetta; Furmanek, Mariusz; Siwik, Paulina; Bujnowska, Nadia; Domański, Jan; Żuk-Łapan, Aleksandra; Filipiak, Ewa; Walecki, Jerzy; Franek, Edward; Vega, Tatiana; Barbosa, Julian; Cruz, Stefania; Aristizabal, Natalia; Aguilar, Carolina; Luis Torres, Jose; Herrera, Sebastian; Osorio, Santiago; Cho, Hong Je; Jin, Hye Young; Hwang, Il Tae; Kim, Eun Young; Gil, Joan; Martel-Duguech, Luciana; Díaz, Ramón; Josep, Joan; Nuñez-Peralta, Claudia; Gallardo, Eduard; Webb, Susan; Valassi, Elena; Zaidi, Bushra; Javid, Mahsa; Williams, Brian; Mokshagundam, Sri Prakash L; Mignone, Edward; Saran, Frank; Psaltis, Alkis; Jukes, Alistair; Paul, Ryan; William Carroll, Richard; Chapman, Ian; Torpy, David J; De Sousa, Sunita M C; Rajeev Nair, Lekshmi; Hastings Salcedo, Camden; Seabrook, Paige; Wynn, Anne; James, Deirdre; Azocar Villalobos, Jorge L; Gonzales, Kristen; Terasaka, Tomohiro; Inagaki, Kenichi; Yamaoka, Kimitomo; Miyazaki, Takahiro; Fujisawa, Satoshi; Lawson, Mark A; Wada, Jun; Soto, Alfonso; Jimenez sanchez, andres; Dios Fuentes, María Elena; Remon-Ruiz, Pablo; Venegas Moreno, Eva; Delshad, Jonah; Hossain, Sadaf; Akter Marowa, Sabrin; Rosenthal, David S; Chellappan Kumar, Salini; Liao, Huijuan; Mulayamkuzhiyil, Jiya; Joseph, Justeena; Auguste, Jorgio; Ma, Jonathan; Romero, Daniela Yepez; De Souza, Nastassia I; Vaz Lopes, Marta; Vicente Rocha, José; de Grine Severino, Mariana; Ribeiro Peixe, Carolina; Isabel Lopes, Catarina; António Duarte, Miguel; Inês Alexandre, Maria; Gomes, Ana; Faria, Claudia C; Lacerda Nobre, Ema; Yeh, Heng; Myat Nge, Htoo; Hashmi, Tahreem; Racedo Askari, Karen; Robèrt, Jonas; Tsatsaris, Erika; Berinder, Katarina; Bonelli, Lorenza; Burman, Pia; Dahlqvist, Per; Hoybye, Charlotte; Ragnarsson, Oskar; Vouzouneraki, Konstantina; Åkerman, Anna-Karin; Eden Engström, Britt; Ekman, Bertil; Esquivel Vargas, Jose Edmond; Piedra Pacheco, Ana L; Moya Porras, Luis F; Santos Rojo, Ana B; Hong Lo, Anthony; Ulate Oviedo, Laura; Kothapalli, Anusha; Patel, Nihar; Beth Hodge, Mary; Javeed, Iqra; Elias, Heather; Garcia-Banigan, Dinamarie Cruz; Upadhyay, Jagriti; Lustenberger, Sven; Atila, Cihan; Riehle, Friederike; Bathelt, Cemile; Verbalis, Joseph G; Christ-Crain, Mirjam; Malave, Sofia I; Shaw, Natalie D; Molsberry, Samantha; Denslow, Sheri; Lih, Fred B; Alimussina, Malika; Bryce, Jillian; Chen, Minglu; Koley, Sanhita; Anderson, Jessica; Ching Chen, Suet; Ahmed, S Faisal; GloBE-Reg GH Consortium; Torres-Pinzon, Diana L; Song, Lu; Mogar, Nikita; Romero, Daniela Yepez; Joseph, Justeena; Saju, Jiya Mulayamkuzhiyil; Perdomo, Tommy Ojukwu; Khan, Junaid; Basant, Stephanie; Desouza, Nastassia; Reddy Duvvuru, Sparsha; Luna Ceron, Eder; Vaishnavi Kattamuri, Lakshmi Prasanna; Chozet, Luis; Marie Bright, Tamis; Cheryl Gregory, Louise; Rath, Shoshana; Mandel, Hanna; Elias-Assad, Ghadir; Samra, Nadra N; Parker, Michael J; Dimitri, Paul; Hanchate, Naresh K; Tulsidas Dattani, Mehul; Leibnitz, Svenja; Baumann, Sarah; Atila, Cihan; Romberg, Christina; Hepprich, Matthias; Antwi, Kwadwo; Winzeler, Bettina; Christ, Emanuel R; Mirjam, Christ-Crain; Hoorfar, Hamid; Lane, Malcolm; Nguyen, Vien; Aberdeen, Graham; Urabanski, Henryk F; Puche, Adam; Prokai, Laszlo; Merchenthaler, Istvan; Esparza, Lourdes A; Real, Marcos; Kelton, Andrew; Hudson, Alexandra; Rodriguez, Julian; Pradhan, Marjorie; Yang, Jason; Iwata, Kyle; Lhuillier, Emma; Duong, Viet; Coutinho, Eulalia A; Duleba, Antoni J; Harrison, Tracy; Kauffman, Alexander S; Tomiyama, Keiko; Fukuda, Izumi; Okazaki-Hada, Mikiko; Kobayashi, Shunsuke; Nagamine, Tomoko; Inagaki, Kyoko; Nagao, Mototsugu; Tahara, Shigeyuki; Iwabu, Masato; Pearlstein, Hannah; Grabill, Megan; Ang, Lee; Crowley, Julia; Chacko, Isabel; Wade, Kristin; Kayadjanian, Nathalie; Wood, Amy; Ness, Kirsten; McCormack, Shana; Habib, Ukasha; Shih, Helen; Biller, Beverly M K; Tritos, Nicholas A; Aggarwal, Tanya; Sandooja, Rashi; Fingeret, Abbey; Shank, Jessica Barbara; Mulder, Michelle Burkett; Vargas, Luciano M; Aliyah Ahmed, Zahra; Loh, Ee-Wen; Bissoon, Hannah; Dancyger-Stevens, Luka; Ho, Tak-Wai; Wimbury, James; De Lima, Yasmin Chotai; Masuka, Shamiso; Munir, Alia; Rechia Bitencourt, Mariana; Costa Araújo, Fernando; Peixoto Biscotto, Isabela; do Nascimento, Victor H; Carvalho, André; Bonidia, Robson; Silveira de Carvalho, Luciani Renata; Leibnitz, Svenja; Baumann, Sarah; Atila, Cihan; Romberg, Christina; Hepprich, Matthias; Antwi, Kwadwo; Christ, Emanuel R; Christ-Crain, Mirjam; Pereira Galizzi, Bernardo Assunção; Dias Nascimento, Mayara; Natal, Rodrigo; Borigato, Sara; Guilherme Freitas, Lucas; Santana Soares, Beatriz; Beaudette Drummond, Juliana; De Mattei, Leticia; Celik, Berk; Kashat, Mary; Quaglia Morato, Marcelino; Banka, Ajaz; Guillermo Vaca, Richard; Delgado Nieves, Andrea Nicole; Slack, Daniel; Yuksel, Simge; Ye, Kenny; Weinberg, Jessica R; Gao, Tina; Aleksic, Sandra; Wang, Tao; Barzilai, Nir; Milman, Sofiya; Beck, Julia; Kustos-Toth, Eszter; Seeger, Lucia; Monnerat, Sophie; Bathelt, Cemile; Refardt, Julie; Christ-Crain, Mirjam; Akhter, Rimsha; Akhter, Wajeeha; Zaidi, Aniqa; Gilden, Janice L; Gabriel Meireles, Cinthia; Boris, Natalia; Hausken, Krist; Garza, Viviana; Alcântara Pereira, Sidney; Alexiades Stamatiades, George; Kim, Hankyeol; Stephanie Carroll, Rona; Kaiser, Ursula B; Lung, John; Bang, Neha; Pandey, Manu; Punni, Emma; Goyal, Itivrita; Htut, Zin; MacFarlane, James; Nair, Ramesh; Andrea Papadopoulou, Debbie; Maria Martin, Niamh; Meeran, Karim; Gillett, Daniel; Gurnell, Mark; Wernig, Florian; Sugimura, Yoshihisa; Fujisawa, Haruki; Takeuchi, Takako; Iwata, Naoko; Nakayama, Shogo; Ishii, Akira; Muto, Jun; Kamasaki, Hotaka; Suzuki, Atsushi; Desai, Ruchi; Sidra, Fnu; Mirfakhraee, Sasan; Liwei, Jia; Polanco, Patricio; Al Mutar, Salwan; Hamidi, Oksana; Brincks, Erik L; Parikh, Alpa; Quesnot, Melissa; Smith, Christopher; Christopher, Ronald; McKew, John C; Bruchey, Aleksandra; Niyagama, Anjana; Elston, Marianne; Boyle, Veronica; Corley, Brian; Walsh, Emily; Yeoh, Joey; Tamatea, Jade; Soule, Steven G; Wei Yong, King; Park, William; William Carroll, Richard; Cotto-Vazquez, Ariana C; Rodriguez-Franco, Lorimar; Mora-Osoria, Oswald; Rosario-Guzman, Gabriela; Fret-Cruz, Alexander; Rosario-Martinez, Carlos; Garcia-Mateo, Jose M; McQuade, Emily C; Ruddy, Margaret; Lo Piccolo, Anthony J; Lee, Ting-Fang; Jordan, Gabriela; Agrawal, Nidhi; Dhulipalli, Anita; Sicklick, Jason K; Ekanayake, Preethika S; Arabi, Akram; Magee, Tamika; Golagha, Mahshid; Naimian, Amirkia; Gupta, Amolika; Rivero, Anna; Cooper, Kimberley; Del Rivero, Jaydira; Winnicki, Kamil; Ahmed, Zayd A; Olson, Guy; Porter, Tama; Donovan, Alexandra; Grella, Christine; Assari, Shervin; Shaheen, Magda; Richter, Linda; Friedman, Theodore C; Anna Oclon, Ewa; Gurgul, Artur; Jasielczuk, Igor; Szmatola, Tomasz; Zieba-Przybylska, Dorota Anna; Brott, Nathan R; Kandimalla, Likhita; Hollie, Matthew; Portugal Duarte, Mariana Costa; Mattos, Raquel; Rubioli Costa, Thaiane; Silva Freitas, Izabella; Beaudette Drummond, Juliana; Santana Soares, Beatriz; Snyder, Christen N; Haddad, Lana L; Liberman, Kameron M; Yang, Shany E; Meng, Jennifer; Spencer-Segal, Joanna L; Emtiaz, Tanjina; Hasan, Nazmul; Temitayo Otunla, Moses Temitayo; Rashid, Nadia; Hodges, Michael; Chhabra, Kavaljit H

LBMON135 Diffuse Large B-cell Lymphoma Affecting The Pituitary Gland: A Case Report

LBMON135 弥漫性大B细胞淋巴瘤累及垂体:病例报告

Liwinski, Timur; Auer, Matthias K; Schröder, Johanna; Pieknik, Ina; Casar, Christian; Schwinge, Dorothee; Henze, Lara; Stalla, Günter K; Lang, Undine E; von Klitzing, Alina; Briken, Peer; Hildebrandt, Thomas; Desbuleux, Jeanne C; Biedermann, Sarah V; Holterhus, Paul-Martin; Bang, Corinna; Schramm, Christoph; Fuss, Johannes; Makarova, Elizaveta; Jamil, Abid; Siddiqui, Ayesha S; Villa, Pedro; Ruggiero-Ruff, Rebecca; Jamieson, Bradley; Campbell, Rebecca; Coss, Djurdjica; Shin, Hyeju; Serebro, Merav; Bach, Michal Yacobi; Zohar, Naomi Even; Reches, Adi; Greenman, Yona; Tan, Zi; Taiwo, Adeyinka; Murugesh, M; Thelmo, F; Watari, J; Kim, Min Soo; Jang, Min Jun; Choi, Jeongyoon; Jenkins, William Evan; Elmaaz, Ahmed; Makdissi, Antoine; Rochtus, A M; Vermeer, S; Antonio, L; Einafshar, Parastou; Delibasi, Tuncay; Littlepage-Saunders, Mydirah; Rusnak, Milan; Tsuda, Mumeko; John Wu, T; Vargas, Jose Edmond Esquivel; Salazar, Francis Ruiz; Santos Rojo, Ana B; Balasubramanian, Priyadarshini; Cohen, Jeffrey; Corbin, Zachary; Panse, Gauri; Inzucchi, Silvio E; Kreit, Helen; Patel, Janki; Shah, Neel L; Guttenberg, Katie B; Fujio, S; Makino, R; Sugata, J; Hanada, T; Hanaya, R; Malapur, Bina; Jakoby, Michael G; Valbe, E; Ng, J; Fuller, P J; Cole, T J; Araoye, Olubusayo; Delibasi, Tuncay; Chaugule, Akshata Satish; Dhillon, Shabnam Kaur; Fuller, Christine; Bantu, S S; Kabir, P N; Gondhi, A; Vaughan, T B; Sazon, J G; Reyes, J L; Chua, J V; Kho, S A; Ramos, Jayme Mendonça; Campbell, Ruth; Lawless, Sarah Jean; MacNeill, Briain; Brosnan, Elizabeth; Bell, Marcia J; Zhou, Ziyue; Pardo-Navarro, Maria; Han, Su Young; Herbison, Allan Edward; Pace, Sebastian A; Lukinic, Ema; Barrette, Paige; Wallace, Tyler; Myers, Brent; Beekly, Bethany Genelle; Rodriguez Caballero, Maria Galiana; Romero, Fabiola; Escurra, Clara; Rodriguez, Roque; Rolon, Roger; Valinotti, Elizabeth; Ayala, Alejandro; Skariah, Annie M; Zacharia, Christine C; Kelly, Clare; Ghalib, Luma; Esaki, Yumiko; Bheeman, Chandni; Shafiq, Ismat; Martinez Cruz, Maria S; Haas, Christopher J; Bhat, Salman Zahoor; Mishra, Ipsita; Pradhan, Amrita; Baliarsinha, Anoj Kumar; Erlendsson, Simon; Kulakova, Alina; Poulsen, Svend; Thygesen, Peter; dos Santos, Willian O; Juliano, Vitor A L; Vieira, Henrique R; Frazao, Renata; Munhoz, Carolina Demarchi; Donato, Jose; Bronson, Katherine L; Hardy, Linda; Lagasse, Alexandra; MacNicol, Angus M; Arora, Neha; Maxwell, Carolyn; Kim, Julie Minjae; Kim, Kyungwon; dos Santos, Willian O; Juliano, Vitor A L; Vieira, Henrique R; Frazao, Renata; Munhoz, Carolina Demarchi; Donato, Jose; Quignon, Clarisse; Backer, Annika; Wray, Susan; Coutinho, Eulalia; Esparza, Lourdes A; Kauffman, Alexander S; Huang, Ning; Zhang, Yong; Liu, Yan Ting; Feng, Yao; Xue, Li; Wu, Zhe Bao; Alfares, Khalid; Han, Hye Jeong; Athimulam, Shobana; Kolitz, Tamara; Shemesh, Elad; Nathan, Alexandra; Eldor, Roy; Izkhakov, Elena; Greenman, Yona; Chale-Matsau, Bettina; Van Staden, Louis P; Kemp, Tanja; Pillay, Tahir S; Idriss, Setana; Shaikhoun, Mazin; Ahmad, Rehan; Sotomayor, Fiorella; Kroopnick, Jeffrey; Daughters, Katie; Rees, Aled; Unwin, Katy; Higuchi, Masashi; Shintani, Aran; Phan, Van; Erenler, Feyzer; Lechan, Ronald; Kadakia, Natasha; Sadiq, Sobia; Monsour, Elio; Amole, Morolake; Xhikola, Majlinda; Kadiyala, Sushma; Meftali, Sabrina; Bilbatua, Martha; Bhatt, Bankim A; Rios, Paola; Iragorry, Corina; Jara, Mark; Hannoush, Zeina; Schlaffer, Sven-Martin; Buchfelder, Michael; Coras, Roland; Hirata, Shinichi; Nakayama, Nanako; Soejima, Yoshiaki; Iwata, Nahoko; Nakano, Yasuhiro; Yamamoto, Koichiro; Suyama, Atsuhito; Nada, Takahiro; Fujisawa, Satoshi; Otsuka, Fumio; Adaway, Jo; Auer, Matthias; Bidlingmaier, Martin; Braun, Leah; Hawley, James; Keevil, Brian; Lottspeich, Christian; Reincke, Martin; Reisch, Nicole; Schilbach, Katharina; Tschaidse, Lea; Vogel, Frederick; Nowotny, Hanna; Eisenberg, Yuval; Pradeep, Pallavi; Bamba, Vaneeta; Cilenti, Nicolette; Crowley, Julia; Dedio, Anna E; Fisher, Michael J; Hocking, Matthew C; Lawson, Elizabeth A; Plessow, Franziska; Roizen, Jeffrey D; Vetter, Victoria L; Wade, Kristin L; Wang, Zi C; Xiao, Rui; McCormack, Shana; Khalifa, Maram; Faisal, Sobia; Kantorovich, Vitaly; Wojeck, Brian; Peter, Patricia; Engle, Kelly; Hupfeld, Chistopher; Dawahir, Wafa; Gilden, Janice; Wong, Anderson O L; Li, Dongliang; Ye, Cheng; He, Mulan; Ko, Wendy K W; Ali, Basim; Chatterjee, Ritodhi; Chen, Rui; La, Betty; Nguyen, Son; Tetlay, Maryam; Vasudevan, Madhuri; Villareal, Dennis; Kapoor, Ashutosh; Shaikh, Sheeba; Lewis, Alexander; Cipriani, Allison; Fernandes, Jyotika; Sora, Nicoleta; Tofil, Kathrin; Kreit, Helen; Chary, Priyanka Kesavan; Bright, Tamis; Rehman, Aziz U; Masumy, Misha; Aschemeyer, Jayme

Masked CKD in hyperthyroidism and reversible CKD status in hypothyroidism

甲亢患者的隐匿性慢性肾脏病和甲减患者的可逆性慢性肾脏病

Uchiyama-Matsuoka, Natsumi; Tsuji, Kenji; Uchida, Haruhito A; Kitamura, Shinji; Itoh, Yoshihiko; Nishiyama, Yuki; Morimoto, Eisaku; Fujisawa, Satoshi; Terasaka, Tomohiro; Hara, Takayuki; Ogura-Ochi, Kanako; Inagaki, Kenichi; Wada, Jun

SUN-220 High Salt Intake May Paradoxically Drive Autonomous Aldosterone Production

SUN-220 高盐摄入可能反而会促进醛固酮自主生成

Sol, Bastiaan; Carprieaux, Marilyn; De Leu, Nico; Terasaka, Tomohiro; Inagaki, Kenichi; Yamaoka, Kimitomo; Miyazaki, Takahiro; Fujisawa, Satoshi; Lawson, Mark A; Wada, Jun; Azizan, Elena Aisha; Long, Kha Chin; Sukor, Norlela; Salleh, Ruhaya; Othman, Fatimah; Saminathan, Thamil Arasu; Wu, Xilin; Zhou, Junhua; He, Feng Jun; Gregor, Graham Mac; Brown, Morris Jonathan

Overexpression of SOCS3 mediated by adenovirus vector in mouse and human castration-resistant prostate cancer cells increases the sensitivity to NK cells in vitro and in vivo

腺病毒载体介导的 SOCS3 在小鼠和人类去势抵抗性前列腺癌细胞中的过表达增加了体外和体内对 NK 细胞的敏感性

Tomomi Yoneda, Naoto Kunimura, Koichi Kitagawa, Yuka Fukui, Hiroki Saito, Keita Narikiyo, Motoki Ishiko, Naoki Otsuki, Ken-Ichi Nibu, Masato Fujisawa, Satoshi Serada, Tetsuji Naka, Toshiro Shirakawa

MON-485 Effects of Orexin A on Prolactin Production by Regulating BMP-4 Activity in Rat Pituitary Lactotorope Cells

MON-485 食欲素A通过调节大鼠垂体泌乳细胞中BMP-4活性对催乳素产生的影响

Janssen, Jennifer S; Sharma, Vibha; Pugazhenthi, Umarani; Sladek, Celia; Wood, William M; Haugen, Bryan R; Fujisawa, Satoshi; Komatsubara, Motoshi; Ogura-Ochi, Kanako; Hara, Takayuki; Toma, Kishio; Tsukamoto-Yamauchi, Naoko; Inagaki, Kenichi; Wada, Jun; Otsuka, Fumio

SAT-473 Acromegaly and Drug-Induced Parkinsonism Were Controlled by Lanreotide

SAT-473 肢端肥大症和药物诱发的帕金森综合征可通过兰瑞肽控制。

Costa, Gabriela de Moraes; Mosella, Maritza; Sabedot, Thais; Malta, Tathiane; Felicella, Michelle; Aho, Todd; Poisson, Laila; deCarvalho, Ana; Noushmehr, Houtan; Rock, Jack; Castro, Ana Valeria; Bogusz, Agnieszka; Boekhoff, Svenja; Calaminus, Gabriele; Eveslage, Maria; Muller, Hermann; Chesnokova, Vera; Zonis, Svetlana; Barrett, Robert; Gleeson, John; Gorbunova, Vera; Melmed, Shlomo; Tran, Andy; Belsham, Denise; McIlwraith, Emma; Belsham, Denise; Gonzales, Irish Judy; Uwaifo, Gabriel; Stallings, Caitlin; Jensik, Philip; Ellsworth, Buffy; Fujisawa, Satoshi; Komatsubara, Motoshi; Ogura-Ochi, Kanako; Hara, Takayuki; Toma, Kishio; Tsukamoto-Yamauchi, Naoko; Inagaki, Kenichi; Wada, Jun; Otsuka, Fumio; Iwabuchi, Masayasu