PMID- 31402541 OWN - NLM STAT- MEDLINE DCOM- 20200902 LR - 20210110 IS - 1582-4934 (Electronic) IS - 1582-1838 (Print) IS - 1582-1838 (Linking) VI - 23 IP - 10 DP - 2019 Oct TI - Anatomically specific reactive oxygen species production participates in Marfan syndrome aneurysm formation. PG - 7000-7009 LID - 10.1111/jcmm.14587 [doi] AB - Marfan syndrome (MFS) is a connective tissue disorder that results in aortic root aneurysm formation. Reactive oxygen species (ROS) seem to play a role in aortic wall remodelling in MFS, although the mechanism remains unknown. MFS Fbn1(C1039G/+) mouse root/ascending (AS) and descending (DES) aortic samples were examined using DHE staining, lucigenin-enhanced chemiluminescence (LGCL), Verhoeff's elastin-Van Gieson staining (elastin breakdown) and in situ zymography for protease activity. Fbn1(C1039G/+) AS- or DES-derived smooth muscle cells (SMC) were treated with anti-TGF-beta antibody, angiotensin II (AngII), anti-TGF-beta antibody + AngII, or isotype control. ROS were detected during early aneurysm formation in the Fbn1(C1039G/+) AS aorta, but absent in normal-sized DES aorta. Fbn1(C1039G/+) mice treated with the unspecific NADPH oxidase inhibitor, apocynin reduced AS aneurysm formation, with attenuated elastin fragmentation. In situ zymography revealed apocynin treatment decreased protease activity. In vitro SMC studies showed Fbn1(C1039G/+) -derived AS SMC had increased NADPH activity compared to DES-derived SMC. AS SMC NADPH activity increased with AngII treatment and appeared TGF-beta dependent. In conclusion, ROS play a role in MFS aneurysm development and correspond anatomically with aneurysmal aortic segments. ROS inhibition via apocynin treatment attenuates MFS aneurysm progression. AngII enhances ROS production in MFS AS SMCs and is likely TGF-beta dependent. CI - (c) 2019 The Authors. Journal of Cellular and Molecular Medicine published by Foundation for Cellular and Molecular Medicine and John Wiley & Sons Ltd. FAU - Emrich, Fabian AU - Emrich F AD - Department of Cardiothoracic Surgery, Stanford University, Stanford, California. AD - Department of Cardiothoracic Surgery, Leipzig University Heart Center, Leipzig, Germany. FAU - Penov, Kiril AU - Penov K AD - Department of Cardiothoracic Surgery, Stanford University, Stanford, California. AD - Department of Cardiothoracic Surgery, Leipzig University Heart Center, Leipzig, Germany. FAU - Arakawa, Mamoru AU - Arakawa M AD - Department of Cardiothoracic Surgery, Stanford University, Stanford, California. AD - Department of Cardiovascular Surgery, Jichi Medical University, Saitama, Japan. FAU - Dhablania, Nathan AU - Dhablania N AD - Department of Cardiothoracic Surgery, Stanford University, Stanford, California. FAU - Burdon, Grayson AU - Burdon G AD - Department of Cardiothoracic Surgery, Stanford University, Stanford, California. FAU - Pedroza, Albert J AU - Pedroza AJ AD - Department of Cardiothoracic Surgery, Stanford University, Stanford, California. FAU - Koyano, Tiffany K AU - Koyano TK AD - Department of Cardiothoracic Surgery, Stanford University, Stanford, California. FAU - Kim, Young M AU - Kim YM AD - Department of Cardiovascular Medicine, Stanford University, Stanford, California. FAU - Raaz, Uwe AU - Raaz U AD - Department of Cardiovascular Medicine, Stanford University, Stanford, California. FAU - Connolly, Andrew J AU - Connolly AJ AD - Department of Pathology, Stanford University, Stanford, California. FAU - Iosef, Cristiana AU - Iosef C AUID- ORCID: 0000-0002-0535-8605 AD - Department of Cardiothoracic Surgery, Stanford University, Stanford, California. FAU - Fischbein, Michael P AU - Fischbein MP AUID- ORCID: 0000-0002-0638-2025 AD - Department of Cardiothoracic Surgery, Stanford University, Stanford, California. LA - eng GR - R01 AR066629/AR/NIAMS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20190811 PL - England TA - J Cell Mol Med JT - Journal of cellular and molecular medicine JID - 101083777 RN - 0 (Acetophenones) RN - 0 (Fibrillin-1) RN - 0 (Reactive Oxygen Species) RN - 11128-99-7 (Angiotensin II) RN - B6J7B9UDTR (acetovanillone) RN - EC 1.6.3.- (NADPH Oxidases) SB - IM MH - Acetophenones/pharmacology MH - Aneurysm/*complications/*metabolism MH - Angiotensin II MH - Animals MH - Aorta/metabolism/pathology MH - Disease Models, Animal MH - Fibrillin-1/deficiency/metabolism MH - Marfan Syndrome/*complications/*metabolism MH - Mice, Inbred C57BL MH - Myocytes, Smooth Muscle/drug effects/metabolism MH - NADPH Oxidases/metabolism MH - Reactive Oxygen Species/*metabolism PMC - PMC6787454 OTO - NOTNLM OT - Marfan syndrome OT - aneurysm OT - reactive oxygen species COIS- None. EDAT- 2019/08/14 06:00 MHDA- 2020/09/04 06:00 PMCR- 2019/10/01 CRDT- 2019/08/13 06:00 PHST- 2019/06/06 00:00 [received] PHST- 2019/07/15 00:00 [revised] PHST- 2019/07/17 00:00 [accepted] PHST- 2019/08/14 06:00 [pubmed] PHST- 2020/09/04 06:00 [medline] PHST- 2019/08/13 06:00 [entrez] PHST- 2019/10/01 00:00 [pmc-release] AID - JCMM14587 [pii] AID - 10.1111/jcmm.14587 [doi] PST - ppublish SO - J Cell Mol Med. 2019 Oct;23(10):7000-7009. doi: 10.1111/jcmm.14587. Epub 2019 Aug 11.