Cilostazol, a Phosphodiesterase 3 Inhibitor, Moderately Attenuates Behaviors Depending on Sex in the Ts65Dn Mouse Model of Down Syndrome. Alzforum, 08 May 2020 Tsuji M, Ohshima M, Yamamoto Y, Saito S, Hattori Y, Tanaka E, Taguchi A, Ihara M, Ogawa Y.