The Publisher and Editor are issuing an Expression of Concern on the article entitled “Aldosterone Contributed to Pulmonary Arterial Hypertension Development via Stimulating Aquaporin Expression and Pulmonary Arterial Smooth Muscle Cells Proliferation.” [Pharmacology. 2020;105(7–8):405–15; DOI: 10.1159/000504228] by Yue Wang, Bin Zhong, Qiyong Wu, Tao Zhu, Yong Wang and Ming Zhang.

After publication of this article, concerns were raised about the integrity of some of the data presented. The authors did not respond to our correspondence within the given timeframe and the matter has been raised to the corresponding author’s institution. Readers should thus interpret the data presented in the article with caution. Appropriate editorial action will be taken once the investigation is concluded.