Sistema FMUSP-HC: Faculdade de Medicina da Universidade de São Paulo (FMUSP) e Hospital das Clínicas da FMUSPSILVA, Beatriz Helena Cermaria Soares daARIGA, Suely KuboBARBEIRO, Hermes VieiraVOLPINI, Rildo AparecidoBARBEIRO, Denise FredianiSEGURO, Antonio CarlosSILVA, Fabiano Pinheiro da2021-02-182021-02-182021INTERNATIONAL JOURNAL OF MEDICAL SCIENCES, v.18, n.4, p.883-890, 20211449-1907https://observatorio.fm.usp.br/handle/OPI/39460Background: Cathelicidins are ancient and well-conserved antimicrobial peptides (AMPs) with intriguing immunomodulatory properties in both infectious and non-infectious inflammatory diseases. In addition to direct antimicrobial activity, cathelicidins also participate in several signaling pathways inducing both pro-inflammatory and anti-inflammatory effects. Acute kidney injury (AKI) is common in critically ill patients and is associated with high mortality and morbidity. Rhabdomyolysis is a major trigger of AKI. Objectives: Here, we investigated the role of cathelicidins in non-infectious Acute kidney Injury (AKI). Method: Using an experimental model of rhabdomyolysis, we induced AKI in wild-type and cathelicidin-related AMP knockout (CRAMP(-/-)) mice. Results: We previously demonstrated that CRAMP(-/-) mice, as opposed wild-type mice, are protected from AKI during sepsis induced by cecal ligation and puncture. Conversely, in the current study, we show that CRAMP(-/-) mice are more susceptible to the rhabdomyolysis model of AKI. A more in-depth investigation of wild-type and CRAMP(-/-) mice revealed important differences in the levels of several inflammatory mediators. Conclusion: Cathelicidins can induce a varied and even opposing repertoire of immune-inflammatory responses depending on the subjacent disease and the cellular context.engopenAccessantimicrobial peptidecathelicidininnate immunityacute kidney injurysepsisrhabdomyolysisinflammationantimicrobial peptide cathelicidinmolecular-mechanismspathophysiologyCathelicidin protects mice from Rhabdomyolysis-induced Acute Kidney InjuryarticleCopyright IVYSPRING INT PUBL10.7150/ijms.52397Medicine, General & Internal