Catalysis of the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: (pyrimidine nucleoside or adenine)(out) + Na+(out) = (pyrimidine nucleoside or adenine)(in) + Na+(in).
Catalysis of the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: (pyrimidine nucleoside or adenine)(out) + Na+(out) = (pyrimidine nucleoside or adenine)(in) + Na+(in). (en)