PMID- 28545777 OWN - NLM STAT- MEDLINE DCOM- 20180530 LR - 20180530 IS - 1879-0712 (Electronic) IS - 0014-2999 (Linking) VI - 811 DP - 2017 Sep 15 TI - Inhibitory effects of doxycycline on the onset and progression of abdominal aortic aneurysm and its related mechanisms. PG - 101-109 LID - S0014-2999(17)30372-2 [pii] LID - 10.1016/j.ejphar.2017.05.041 [doi] AB - The objective of this study was to investigate whether doxycycline (DOX) given at different doses and via different administration routes had protective or therapeutic effects on abdominal aortic aneurysm (AAA) induced by elastase in mice. Moreover, the anti-AAA mechanism of DOX was studied in TNF-alpha-stimulated vascular smooth muscle cell (VSMC) in vitro. For in vivo study, either daily administration of 30mg/kg of DOX by gavage or intraperitoneal injection of 15mg/kg DOX every other day for 14 days significantly prevented the development of AAA at its early stage. Further study showed that intraperitoneal injection of 15mg/kg DOX every other day for 7 times in total could also cure the established AAA. In vitro study showed that treating VSMCs with TNF-alpha together with DOX remarkably inhibited the expressions and activities of MMPs (MMP-2 and MMP-9), significantly suppressed the activation of protein kinase B (AKT) signaling pathway and mitogen-activated protein kinases (MAPKs) signal proteins, including extracellular signal-regulated kinase (ERK), c-Jun amino-terminal kinases (JNK) and p38, and downregulated mRNA levels of interleukin-6 (IL-6) and monocyte chemotactic protein 1 (MCP-1), and significantly upregulated mRNA levels of transforming growth factor beta (TGF-beta), heme oxygenase 1 (HO-1) and superoxide dismutase 1 (SOD-1), indicating that DOX inhibits activities of MMPs through reducing oxidative stress, suppressing MAPKs and AKT signaling pathways and ameliorating inflammation in VSMCs, and therefore, exerts preventive as well as therapeutic effects on AAA. CI - Copyright (c) 2017 Elsevier B.V. All rights reserved. FAU - Yu, Maomao AU - Yu M AD - Institute of Cardiovascular Sciences, Peking University Health Science Center, Peking University, Beijing 100191, China; Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education, Beijing 100191, China; Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems, Beijing 100191, China. FAU - Chen, Cong AU - Chen C AD - Institute of Cardiovascular Sciences, Peking University Health Science Center, Peking University, Beijing 100191, China; Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education, Beijing 100191, China; Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems, Beijing 100191, China. FAU - Cao, Yini AU - Cao Y AD - Institute of Cardiovascular Sciences, Peking University Health Science Center, Peking University, Beijing 100191, China; Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education, Beijing 100191, China; Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems, Beijing 100191, China. FAU - Qi, Rong AU - Qi R AD - Institute of Cardiovascular Sciences, Peking University Health Science Center, Peking University, Beijing 100191, China; Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education, Beijing 100191, China; Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems, Beijing 100191, China. Electronic address: ronaqi@bjmu.edu.cn. LA - eng PT - Journal Article DEP - 20170522 PL - Netherlands TA - Eur J Pharmacol JT - European journal of pharmacology JID - 1254354 RN - 0 (Biomarkers) RN - 0 (Cytokines) RN - 0 (RNA, Messenger) RN - EC 2.7.11.1 (Proto-Oncogene Proteins c-akt) RN - EC 3.4.24.24 (Matrix Metalloproteinase 2) RN - EC 3.4.24.35 (Matrix Metalloproteinase 9) RN - N12000U13O (Doxycycline) SB - IM MH - Animals MH - Aorta/drug effects/metabolism/pathology/physiopathology MH - Aortic Aneurysm, Abdominal/genetics/metabolism/pathology/*prevention & control MH - Biomarkers/metabolism MH - Cytokines/genetics MH - *Disease Progression MH - Dose-Response Relationship, Drug MH - Doxycycline/*pharmacology MH - Gene Expression Regulation, Enzymologic/drug effects MH - MAP Kinase Signaling System/drug effects MH - Male MH - Matrix Metalloproteinase 2/metabolism MH - Matrix Metalloproteinase 9/metabolism MH - Mice MH - Muscle, Smooth, Vascular/drug effects/pathology MH - Oxidative Stress/drug effects MH - Phosphorylation/drug effects MH - Proto-Oncogene Proteins c-akt/metabolism MH - RNA, Messenger/genetics/metabolism OTO - NOTNLM OT - Abdominal aortic aneurysm OT - Doxycycline OT - Elastase OT - Inflammation OT - MMPs OT - VSMC EDAT- 2017/05/27 06:00 MHDA- 2018/05/31 06:00 CRDT- 2017/05/27 06:00 PHST- 2017/02/26 00:00 [received] PHST- 2017/03/22 00:00 [revised] PHST- 2017/05/22 00:00 [accepted] PHST- 2017/05/27 06:00 [pubmed] PHST- 2018/05/31 06:00 [medline] PHST- 2017/05/27 06:00 [entrez] AID - S0014-2999(17)30372-2 [pii] AID - 10.1016/j.ejphar.2017.05.041 [doi] PST - ppublish SO - Eur J Pharmacol. 2017 Sep 15;811:101-109. doi: 10.1016/j.ejphar.2017.05.041. Epub 2017 May 22.