  We show that, at weak to intermediate coupling, antiferromagnetic
fluctuations enhance d-wave pairing correlations until, as one moves closer to
half-filling, the antiferromagnetically-induced pseudogap begins to suppress
the tendency to superconductivity. The accuracy of our approach is gauged by
detailed comparisons with Quantum Monte Carlo simulations. The negative
pressure dependence of Tc and the existence of photoemission hot spots in
electron-doped cuprate superconductors find their natural explanation within
this approach.
