CLDN7 and preeclampsia: Owing to the importance of claudins as major constituents of the tight junctional complexes that regulate the permeability of epithelia and their roles as crucial transmembrane proteins in cell‐to‐cell adhesion, the current study has evaluated the changes in immunohistochemical expression of claudin‐1 and claudin‐3 in preeclampsia with and without supplementation of omega‐3.