AUTHOR=Walwyn Wendy Margaret , Valenza Marta TITLE=Editorial: Kappa opioid receptors revealed: Disentangling the pharmacology to open up new therapeutic strategies JOURNAL=Frontiers in Pharmacology VOLUME=13 YEAR=2022 URL=https://www.frontiersin.org/journals/pharmacology/articles/10.3389/fphar.2022.973780 DOI=10.3389/fphar.2022.973780 ISSN=1663-9812