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Abstract Title:

Morinda citrifolia (Noni) fruit juice promotes vascular endothelium function in hypertension via glucagon-like peptide-1 receptor-CaMKKβ-AMPK-eNOS pathway.

Abstract Source:

Phytother Res. 2020 Apr 16. Epub 2020 Apr 16. PMID: 32298014

Abstract Author(s):

Hisae Yoshitomi, Jingxin Zhou, Toshiaki Nishigaki, Wei Li, Tonghua Liu, Lili Wu, Ming Gao

Article Affiliation:

Hisae Yoshitomi

Abstract:

Morinda citrifolia (Noni) is extensively used in herbal remedies to prevent and treat various diseases, including hypertension. The purpose of this study was to investigate the vascular effects of noni fruit juice and characterize the upstream signaling pathways. We measured the systolic blood pressure, diastolic blood pressure, 24-hr urinary nitric oxide (NO) metabolite excretion, bodyweight (BW), and urine examination in SHR.Cg-Leprcp/NDmcr (SHR/cp) rats after 6 weeks noni juice (15 ml/kg) treatment. Noni juice significantly decreased blood pressure and 24-hr urinary NO metabolite without change of BW or urine volume. Furthermore, the noni juice extract (NJE) promoted endothelial vasorelaxation in rat aorta rings and NO product through an increase in phosphorylation of endothelial nitric oxide synthase (eNOS) in human umbilical vein endothelial cells (HUVECs). NJE might act on a glucagon like peptide-1 receptor (GLP-1R) via Ca/calmodulin-dependent protein kinase kinaseβ (CaMKKβ)-AMPK signaling with pretreatment of their inhibitors or antagonist in HUVECs. Deacetylasperulosidic acid (DAA) was an active compound in noni juice to improve NO release through same pathway in HUVECs. These results suggested that noni is a novel dietary plant that probably regulates GLP-1R-induced CaMKKβ-AMPK-eNOS pathway to improve endothelium-dependent relaxation, thus reduce the blood pressure probably via one of its responsible ingredient DAA.

Study Type : Animal Study
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