{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,30]],"date-time":"2026-06-30T08:45:55Z","timestamp":1782809155479,"version":"3.54.5"},"reference-count":39,"publisher":"World Scientific Pub Co Pte Lt","issue":"05","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Am. J. Chin. Med."],"published-print":{"date-parts":[[2018,1]]},"abstract":"<jats:p> An extract of Dendropanax morbifera branch exerts antioxidant, anti-inflammatory, antithrombotic, and anticancer activities. The purpose of this study was to investigate the effect of the extract in isoproterenol-induced cardiac hypertrophy. Phalloidin staining showed that treatment with the extract dramatically prevents isoproterenol-induced H9c2 cell enlargement and the expression of cardiac hypertrophic marker genes, including atrial natriuretic peptide (ANP) and B-type brain natriuretic peptide (BNP). Further, pretreatment with the extract decreased isoproterenol-induced GATA4 and Sp1 expression in H9c2 cells. Overexpression of Sp1 induced the expression of GATA4. The forced expression of Sp1 or its downstream target GATA4, as well as the co-transfection of Sp1 and GATA4 increased the expression of ANP, which was decreased by treatment with the extract. To further elucidate the regulation of the Sp1\/GATA4-mediated expression of ANP, knockdown experiments were performed. Transfection with small interfering RNAs (siRNAs) for Sp1 or GATA4 decreased ANP expression. The extract did not further inhibit the expression of ANP reduced by the transfection of GATA4 siRNA. Sp1 knockdown did not affect the expression of ANP that was induced by the overexpression of GATA4; however, GATA4 knockdown abolished the expression of ANP that had been induced by Sp1 overexpression. The extract treatment also attenuated the isoproterenol-induced activation of p38 MAPK, ERK1\/2, and JNK1. Hesperidin, catechin, 2,5-dihydroxybenzoic acid, and salicylic acid are the main phenolic compounds present in the extract as observed by high performance liquid chromatography. Hesperidin and 2,5-dihydroxybenzoic acid attenuated isoproterenol-induced cardiac hypertrophy. These findings suggest that the D. morbifera branch extract prevents cardiac hypertrophy by downregulating the activation of Sp1\/GATA4 and MAPK signaling pathways. <\/jats:p>","DOI":"10.1142\/s0192415x18500532","type":"journal-article","created":{"date-parts":[[2018,7,9]],"date-time":"2018-07-09T23:10:07Z","timestamp":1531177807000},"page":"1021-1044","source":"Crossref","is-referenced-by-count":24,"title":["<i>Dendropanax morbifera<\/i> Prevents Cardiomyocyte Hypertrophy by Inhibiting the Sp1\/GATA4 Pathway"],"prefix":"10.1142","volume":"46","author":[{"given":"Simei","family":"Sun","sequence":"first","affiliation":[{"name":"Heart Research Center of Chonnam National University Hospital, Gwangju 61469, Republic of Korea"},{"name":"Zhengjiang Rongjun Hospital, 352 Zhongshan Road, Jianxing City, Zhejiang Province 314000, P. R. 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