Is inorganic phosphate uptake in Trypanosoma cruzi coupled to K ( + ) cycling and to active Na ( + ) extrusion?
Pi starvation stimulates membrane potential-sensitive Pi uptake through different pathways coupled to Na(+) or H(+)/K(+) fluxes.
CCK is a mediator of dietary fat-associated pancreatic cancer. CCK is also involved in the invasiveness of pancreatic tumors through a mechanism involving VEGF-A.