PMID- 29534523 OWN - NLM STAT- MEDLINE DCOM- 20180905 LR - 20181114 IS - 1422-0067 (Electronic) IS - 1422-0067 (Linking) VI - 19 IP - 3 DP - 2018 Mar 12 TI - Exploring the In Vivo Anti-Inflammatory Actions of Simvastatin-Loaded Porous Microspheres on Inflamed Tenocytes in a Collagenase-Induced Animal Model of Achilles Tendinitis. LID - 10.3390/ijms19030820 [doi] LID - 820 AB - Tendon rupture induces an inflammatory response characterized by release of pro-inflammatory cytokines and impaired tendon performance. This study sought to investigate the therapeutic effects of simvastatin-loaded porous microspheres (SIM/PMSs) on inflamed tenocytes in vitro and collagenase-induced Achilles tendinitis in vivo. The treatment of SIM/PMSs in lipopolysaccharide (LPS)-treated tenocytes reduced the mRNA expressions of pro-inflammatory cytokines (Matrix metalloproteinase-3 (MMP-3), cyclooxygenase-2 (COX-2), interleukin-6 (IL-6), and tumor necrosis factor-alpha (TNF-alpha)). In addition, the local injection of SIM/PMSs into the tendons of collagenase-induced Achilles tendinitis rat models suppressed pro-inflammatory cytokines (MMP-3, COX-2, IL-6, TNF-alpha, and MMP-13). This local treatment also upregulated anti-inflammatory cytokines (IL-4, IL-10, and IL-13). Furthermore, treatment with SIM/PMSs also improved the alignment of collagen fibrils and effectively prevented collagen disruption in a dose-dependent manner. Therefore, SIM/PMSs treatment resulted in an incremental increase in the collagen content, stiffness, and tensile strength in tendons. This study suggests that SIM/PMSs have great potential for tendon healing and restoration in Achilles tendinitis. FAU - Jeong, Chandong AU - Jeong C AD - Department of Orthopedic Surgery and Rare Diseases Institute, Korea University College of Medicine, Guro Hospital, Guro-dong, Guro-gu, Seoul 08308, Korea. cdjeong85@gmail.com. AD - Department of Biomedical Science, Korea University College of Medicine, Anam-dong, Seongbuk-gu, Seoul 02841, Korea. cdjeong85@gmail.com. FAU - Kim, Sung Eun AU - Kim SE AD - Department of Orthopedic Surgery and Rare Diseases Institute, Korea University College of Medicine, Guro Hospital, Guro-dong, Guro-gu, Seoul 08308, Korea. sekim10@korea.ac.kr. FAU - Shim, Kyu-Sik AU - Shim KS AD - Department of Biomedical Science, Korea University College of Medicine, Anam-dong, Seongbuk-gu, Seoul 02841, Korea. breakdown88@nate.com. FAU - Kim, Hak-Jun AU - Kim HJ AD - Department of Orthopedic Surgery and Rare Diseases Institute, Korea University College of Medicine, Guro Hospital, Guro-dong, Guro-gu, Seoul 08308, Korea. dakjul@korea.ac.kr. FAU - Song, Mi Hyun AU - Song MH AD - Department of Orthopedic Surgery and Rare Diseases Institute, Korea University College of Medicine, Guro Hospital, Guro-dong, Guro-gu, Seoul 08308, Korea. wwiiw@naver.com. FAU - Park, Kyeongsoon AU - Park K AUID- ORCID: 0000-0003-3625-4128 AD - Department of Systems Biotechnology, Chung-Ang University, Anseong, Gyeonggi-do 17546, Korea. kspark1223@cau.ac.kr. FAU - Song, Hae-Ryong AU - Song HR AD - Department of Orthopedic Surgery and Rare Diseases Institute, Korea University College of Medicine, Guro Hospital, Guro-dong, Guro-gu, Seoul 08308, Korea. songhae@korea.ac.kr. LA - eng PT - Journal Article DEP - 20180312 PL - Switzerland TA - Int J Mol Sci JT - International journal of molecular sciences JID - 101092791 RN - 0 (Anti-Inflammatory Agents) RN - 0 (Interleukins) RN - 0 (Lipopolysaccharides) RN - 0 (Tumor Necrosis Factor-alpha) RN - 9007-34-5 (Collagen) RN - AGG2FN16EV (Simvastatin) RN - EC 1.14.99.1 (Cyclooxygenase 2) RN - EC 3.4.24.- (Collagenases) RN - EC 3.4.24.- (Matrix Metalloproteinases) SB - IM MH - Achilles Tendon/pathology MH - Animals MH - Anti-Inflammatory Agents/administration & dosage/*pharmacology MH - Cells, Cultured MH - Collagen/genetics/metabolism MH - Collagenases/toxicity MH - Cyclooxygenase 2/genetics/metabolism MH - Interleukins/genetics/metabolism MH - Lipopolysaccharides/toxicity MH - Matrix Metalloproteinases/genetics/metabolism MH - *Microspheres MH - Rats MH - Rats, Sprague-Dawley MH - Simvastatin/administration & dosage/*pharmacology MH - Tendinopathy/*drug therapy/etiology MH - Tenocytes/*drug effects/metabolism MH - Tumor Necrosis Factor-alpha/genetics/metabolism PMC - PMC5877681 OTO - NOTNLM OT - Achilles tendinitis OT - anti-inflammation OT - porous microspheres OT - simvastatin OT - tendon healing COIS- The authors declare no conflict of interest. EDAT- 2018/03/15 06:00 MHDA- 2018/09/06 06:00 PMCR- 2018/03/01 CRDT- 2018/03/15 06:00 PHST- 2018/01/18 00:00 [received] PHST- 2018/02/25 00:00 [revised] PHST- 2018/03/08 00:00 [accepted] PHST- 2018/03/15 06:00 [entrez] PHST- 2018/03/15 06:00 [pubmed] PHST- 2018/09/06 06:00 [medline] PHST- 2018/03/01 00:00 [pmc-release] AID - ijms19030820 [pii] AID - ijms-19-00820 [pii] AID - 10.3390/ijms19030820 [doi] PST - epublish SO - Int J Mol Sci. 2018 Mar 12;19(3):820. doi: 10.3390/ijms19030820.