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Local endothelial DNA repair deficiency causes aging-resembling endothelial-specific dysfunction
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SYSNO ASEP 0525651 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Local endothelial DNA repair deficiency causes aging-resembling endothelial-specific dysfunction Author(s) Bautista-Nino, P.K. (NL)
Portilla-Fernandez, E. (NL)
Rubio-Beltran, E. (NL)
van der Linden, J.J. (AN)
de Vries, R. (NL)
van Veghel, R. (NL)
de Boer, M. (NL)
Durik, M. (NL)
Ridwan, Y. (NL)
Brandt r, R. (NL)
Essers, J. (NL)
Menzies, R. (GB)
Thomas, R. (NL)
de Bruin, A. (NL)
Duncker, D.J. (NL)
van Beusekom, H.M.M. (NL)
Ghanbari, M. (NL)
Hoeijmakers, J.H.J. (NL)
Sedláček, Radislav (UMG-J) RID
Touyz, R.M. (GB)
Montezano, A.C. (GB)
van der Pluijm, I. (DE)
Danser, A.H.J. (NL)
Haanes, K.A. (NL)
Roks, A.J.M. (NL)Number of authors 25 Source Title Clinical science. - : Portland Press - ISSN 0143-5221
Roč. 134, č. 7 (2020), s. 727-746Number of pages 20 s. Publication form Online - E Language eng - English Country GB - United Kingdom Keywords tracing reveals ; lineage ; damage ; stress ; mouse ; hyperpolarization ; activation ; mechanism ; cancer ; mice Subject RIV EB - Genetics ; Molecular Biology OECD category Genetics and heredity (medical genetics to be 3) R&D Projects LM2015040 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Limited access Institutional support UMG-J - RVO:68378050 UT WOS 000528253500004 DOI 10.1042/CS20190124 Annotation We previously identified genomic instability as a causative factor for vascular aging. In the present study, we determined which vascular aging outcomes are due to local endothelial DNA damage, which was accomplished by genetic removal of ERCC1 (excision repair cross-complementation group 1) DNA repair in mice (EC-knockout (EC-KO) mice). EC-KO showed a progressive decrease in microvascular dilation of the skin, increased microvascular leakage in the kidney, decreased lung perfusion, and increased aortic stiffness compared with wild-type (WT). EC-KO showed expression of DNA damage and potential senescence marker p21 exclusively in the endothelium, as demonstrated in aorta. Also the kidney showed p21-positive cells. Vasodilator responses measured in organ baths were decreased in aorta, iliac and coronary artery EC-KO compared with WT, of which coronary artery was the earliest to be affected. Nitric oxide-mediated endothelium-dependent vasodilation was abolished in aorta and coronary artery, whereas endothelium-derived hyperpolarization and responses to exogenous nitric oxide (NO) were intact. EC-KO showed increased superoxide production compared with WT, as measured in lung tissue, rich in endothelial cells (ECs). Arterial systolic blood pressure (BP) was increased at 3 months, but normal at 5 months, at which age cardiac output (CO) was decreased. Since no further signs of cardiac dysfunction were detected, this decrease might be an adaptation to prevent an increase in BR In summary, a selective DNA repair defect in the endothelium produces features of age-related endothelial dysfunction, largely attributed to loss of endothelium-derived NO. Increased superoxide generation might contribute to the observed changes affecting end organ perfusion, as demonstrated in kidney and lung. Workplace Institute of Molecular Genetics Contact Nikol Škňouřilová, nikol.sknourilova@img.cas.cz, Tel.: 241 063 217 Year of Publishing 2021 Electronic address https://portlandpress.com/clinsci/article/134/7/727/222439/Local-endothelial-DNA-repair-deficiency-causes
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