... We are grateful to Tomohisa Kato, Akira Nasu, Takashi Kasahara, Kazuo Hayakawa, Kyosuke Kobayashi, Michiko Ueda, Sakura Tamaki, and Yukiko Kobayashi for their assistance. This work was partially ... Takayuki Maruyama, Toshiya Kanaji, Shinsei Fujimura, Hikaru Sugihara, and Akio Nishiura are employees of Ono Pharmaceutical Co. Ltd. All other authors have no conflicts of interest. Acknowledgements ... S, Yagishita N, Araya N, Yudoh K, Beppu M, Yamano Y , Nishioka K, Nakajima T: Prostaglandin EP2 receptor signalling inhibits the expression of matrix metalloproteinase 13 in human osteoarthritic...