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Increased fluid‐flow shear stress (FFSS) contributes to hyperfiltration‐induced podocyte and glomerular injury resulting in progression of chronic kidney disease (CKD). We reported that increased FFSS in vitro and in vivo upregulates PGE2 receptor EP2 (but not EP4 expression), COX2‐PGE2‐EP2 axis, and EP2‐linked Akt‐GSK3β‐β‐catenin signaling pathway in podocytes. To understand and use the disparities between PGE2 receptors, specific agonists, and antagonists of EP2 and EP4 were used to assess phosphorylation of Akt, GSK3β and β‐catenin in podocytes using Western blotting, glomerular filtration barrier function using in vitro albumin permeability (Palb) assay, and mitigation of hyperfiltration‐induced injury in unilaterally nephrectomized (UNX) mice at 1 and 6 months. Results show an increase in Palb by PGE2, EP2 agonist (EP2AGO) and EP4 antagonist (EP4ANT), but not by EP2 antagonist (EP2ANT) or EP4 agonist (EP4AGO). Pretreatment with EP2ANT blocked the effect of PGE2 or EP2AGO on Palb. Modulation of EP2 and EP4 also induced opposite effects on phosphorylation of Akt and β‐Catenin. Individual agonists or antagonists of EP2 or EP4 did not induce significant improvement in albuminuria in UNX mice. However, treatment with a combination EP2ANT + EP4AGO for 1 or 6 months caused a robust decrease in albuminuria. EP2ANT + EP4AGO combination did not impact adaptive hypertrophy or increased serum creatinine. Observed differences between expression of EP2 and EP4 on the glomerular barrier highlight these receptors as potential targets for intervention. Safe and effective mitigating effect of EP2ANT + EP4AGO presents a novel opportunity to delay the progression of hyperfiltration‐associated CKD as seen in transplant donors. [ABSTRACT FROM AUTHOR]

Histopathology differentiates TV from EDV, as TV would be expected to demonstrate hyphae and spores in the stratum corneum.1,2 Flat warts can have a similar clinical and histologic appearance to EDV. A 11-year-old girl with human immunodeficiency virus (HIV) was evaluated by pediatric dermatology for the evaluation of a chronic rash present for at least 5 years. Clinicopathologic correlation with examination and histology findings in the setting of HIV infection favored a diagnosis of EDV. [Extracted from the article]