the mean basal levels of pregnenolone ( p5 ) , 17-hydroxypregnenolone ( 170hp5 ) , dehydroepiandrosterone ( dhea ) , progesterone ( p4 ) , 17-hydroxyprogesterone ( 170hp4 ) , androstenedione ( a-dione ) and aldosterone ( ald ) gradually decreased with advance in age .
C0373704
pregnenolone
C0376260
17-hydroxypregnenolone