Anxiolytic and antidepressant profile of the methanolic extract of Piper nigrum fruits in beta-amyloid (1–42) rat model of Alzheimerʼs disease - Hritcu, L; Noumedem, J A; Cioanca, O; Hancianu, M; Postu, P; Mihasan, M (Behav Brain Funct, 2015)