[1] Univ Buenos Aires, Fac Med, Inst Biol Celular & Neurociencias, RA-1121 Buenos Aires, DF, Argentina
[2] Univ Buenos Aires, Fac Med, Dept Fisiol, RA-1121 Buenos Aires, DF, Argentina
[3] Pontificia Univ Catolica Rio Grande do Sul, Inst Pesquisas Biomed, Ctr Memoria, Porto Alegre, RS, Brazil