Provided are novel peptides of Formula SEQ ID No. 1: J1CysX1X2X3X4X5X6,ProX7ThrCysJ2J3(J4)5(J5)1 (SEQ ID No. 1 ) pharmaceutically acceptable salts thereof, and pharmaceutical compositions thereof, which are which are effective inhibitors of light chains to uromodulin.Linvention concerne de nouveaux peptides de formule (SEQ ID No. 1 : J1CysX1X2X3X4X5X6,ProX7ThrCysJ2J3(J4)5(J5)1 (SEQ ID No. 1) Linvention concerne également des sels pharmaceutiquement acceptables de ceux-ci, et des compositions pharmaceutiques de ceux-ci, qui sont des inhibiteurs efficaces de chaînes légères à luromoduline.