Analyses on serial sections of human PDA and healthy pancreatic tissue here confirms that αSMA-expressing cells also express sst1 in PDA, and shows that the vimentin-positive but αSMA-negative cells, which represent the population of pancreatic stellate cells (PSCs, quiescent cells) in healthy pancreas, do not express sst1. This evidence concerns the gene SSTR1 and Patent ductus arteriosus.