Nerve Growth Factor Effect on Adenosine Transport in Cultured Chromaffin Cells

Abstract
Chromaffin cells both recently isolated or in culture present a high-affinity adenosine transporter with a Km value of 1 .mu.M. When cells were exposed to nerve growth factor (NGF; 10 ng/ml), the adenosine transporter affinity decreased to 3 .mu.M. This value was maintained from 3 days after plating to the end of the culture period. A change in the transport capacity was observed, with a significant increase (.apprx. 200-260%) in NGF-cultured cells throughout the period studied.