PMID- 30597991 OWN - NLM STAT- MEDLINE DCOM- 20190221 LR - 20200225 IS - 1420-3049 (Electronic) IS - 1420-3049 (Linking) VI - 24 IP - 1 DP - 2018 Dec 29 TI - PPARalpha Agonist Suppresses Inflammation after Corneal Alkali Burn by Suppressing Proinflammatory Cytokines, MCP-1, and Nuclear Translocation of NF-kappaB. LID - 10.3390/molecules24010114 [doi] LID - 114 AB - We investigated the effect of a peroxisome proliferator-activated receptor alpha (PPARalpha) agonist after corneal alkali injury. Fenofibrate 0.05% (PPARalpha agonist group) or vehicle (Vehicle group) was topically instilled onto the rat cornea after injury. Histological, immunohistochemical, and real-time reverse transcription PCR analyses were performed. PPARalpha-positive cells were observed among basal cells of the corneal epithelium in normal and alkali-burned corneas. The number of infiltrating neutrophils and macrophages at the corneal limbus was lower in the PPARalpha agonist group. Interleukin-1beta (IL-1beta), IL-6, IL-8, monocyte chemoattractant protein-1 (MCP-1), and vascular endothelial growth factor-An mRNA expression was suppressed in the PPARalpha agonist group compared to the Vehicle group. mRNA levels of nuclear factor kappa B (NF-kappaB) in corneal tissue were not different. However, NF-kappaB was expressed in the cytoplasm of basal cells in the PPARalpha agonist group and in the nucleus in the Vehicle group. MCP-1 was more weakly expressed in the PPARalpha agonist group. The PPARalpha agonist inhibited inflammation during the early phase after injury. Anti-inflammatory effects of the PPARalpha agonist included prevention of up-regulation of proinflammatory cytokines and MCP-1, and prevention of inflammatory cell infiltration into the injured cornea. Thus, a PPARalpha agonist may be a promising treatment for corneal injury. FAU - Nakano, Yuichiro AU - Nakano Y AD - Department of Ophthalmology, Nippon Medical School, Tokyo 113-8603, Japan. nakano1212@nms.ac.jp. AD - Department of Analytic Human Pathology, Nippon Medical School, Tokyo 113-8602, Japan. nakano1212@nms.ac.jp. FAU - Uchiyama, Masaaki AU - Uchiyama M AD - Department of Ophthalmology, Nippon Medical School, Tokyo 113-8603, Japan. uchiyama@nms.ac.jp. AD - Department of Analytic Human Pathology, Nippon Medical School, Tokyo 113-8602, Japan. uchiyama@nms.ac.jp. FAU - Arima, Takeshi AU - Arima T AD - Department of Ophthalmology, Nippon Medical School, Tokyo 113-8603, Japan. takesuiii0714@nms.ac.jp. AD - Department of Analytic Human Pathology, Nippon Medical School, Tokyo 113-8602, Japan. takesuiii0714@nms.ac.jp. FAU - Nagasaka, Shinya AU - Nagasaka S AD - Department of Analytic Human Pathology, Nippon Medical School, Tokyo 113-8602, Japan. 3mousquetaires51a@gmail.com. FAU - Igarashi, Tsutomu AU - Igarashi T AUID- ORCID: 0000-0002-7467-6746 AD - Department of Ophthalmology, Nippon Medical School, Tokyo 113-8603, Japan. tutomu@nms.ac.jp. FAU - Shimizu, Akira AU - Shimizu A AUID- ORCID: 0000-0002-4364-9251 AD - Department of Analytic Human Pathology, Nippon Medical School, Tokyo 113-8602, Japan. ashimizu@nms.ac.jp. FAU - Takahashi, Hiroshi AU - Takahashi H AD - Department of Ophthalmology, Nippon Medical School, Tokyo 113-8603, Japan. tash@nms.ac.jp. LA - eng PT - Journal Article DEP - 20181229 PL - Switzerland TA - Molecules JT - Molecules (Basel, Switzerland) JID - 100964009 RN - 0 (Alkalies) RN - 0 (Biomarkers) RN - 0 (Chemokine CCL2) RN - 0 (Cytokines) RN - 0 (Inflammation Mediators) RN - 0 (NF-kappa B) RN - 0 (PPAR alpha) SB - IM MH - Alkalies/adverse effects MH - Animals MH - Biomarkers MH - Chemokine CCL2/*metabolism MH - Cytokines/*metabolism MH - Disease Models, Animal MH - Immunohistochemistry MH - Inflammation Mediators/*metabolism MH - Keratitis/*etiology/*metabolism MH - Macrophages/drug effects/immunology/metabolism/pathology MH - NF-kappa B/*metabolism MH - PPAR alpha/*agonists/metabolism MH - Protein Transport MH - Rats PMC - PMC6337747 OTO - NOTNLM OT - IL-1beta OT - IkappaB-alpha OT - VEGF-A OT - fenofibrate OT - ophthalmic solution COIS- The authors declare no conflicts of interest. The funding organization had no role in the design or conduct of this research. EDAT- 2019/01/02 06:00 MHDA- 2019/02/23 06:00 PMCR- 2018/12/29 CRDT- 2019/01/02 06:00 PHST- 2018/11/28 00:00 [received] PHST- 2018/12/24 00:00 [revised] PHST- 2018/12/24 00:00 [accepted] PHST- 2019/01/02 06:00 [entrez] PHST- 2019/01/02 06:00 [pubmed] PHST- 2019/02/23 06:00 [medline] PHST- 2018/12/29 00:00 [pmc-release] AID - molecules24010114 [pii] AID - molecules-24-00114 [pii] AID - 10.3390/molecules24010114 [doi] PST - epublish SO - Molecules. 2018 Dec 29;24(1):114. doi: 10.3390/molecules24010114.