X. Yao, X. Q. Wang, S. L. Ma and B. Y. Chen. Sodium tans- hinone IIA solfonate derived from Salvia miltiorrhiza Bunge up-regulate the expression of prolactin releasing peptide (PrRP) in the medulla oblongata in ovariectomized rats. Biochemical Pharmacology, 2006, 72: 582-587.