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J Med Food. 2015 Jul;18(7):715-23. doi: 10.1089/jmf.2014.3307. Epub 2015 May 19.

Ethanol Extract of Persimmon Tree Leaves Improves Blood Circulation and Lipid Metabolism in Rats Fed a High-Fat Diet.

Author information

1
1 Department of Food Science and Nutrition, Kyungpook National University , Daegu, Korea.
2
2 Foods R&D, CJ CheilJedang Corporation , Seoul, Korea.
3
3 Center for Food and Nutritional Genomics Research, Kyungpook National University , Daegu, Korea.
4
4 Department of Food and Nutrition, Sunchon National University , Suncheon, Korea.
5
5 School of Life Sciences, College of Natural Sciences, Kyungpook National University , Daegu, Korea.

Abstract

The leaves of the persimmon tree (PL) are known to have beneficial effects on hyperglycemia, dyslipidemia, and nonalcoholic fatty liver disease. We recently demonstrated that PL had antithrombotic properties in vitro. However, little is known about the antiplatelet and anticoagulant properties of PL in vivo. Omega-3 fatty acid (n-3 FA)-containing fish oil has been widely prescribed to improve blood circulation. This study compared the effects of dietary supplementation with an ethanol extract of PL or n-3 FA on blood coagulation, platelet activation, and lipid levels in vivo. Sprague-Dawley rats were fed a high-fat diet with either PL ethanol extract (0.5% w/w) or n-3 FA (2.5% w/w) for 9 weeks. Coagulation was examined by monitoring the activated partial thromboplastin time (aPTT) and prothrombin time. We examined plasma thromboxane B2 (TXB2), serotonin, and soluble P-selectin (sP-selectin) levels. The aPTT was significantly prolonged in the PL and n-3 FA supplement groups. PL also attenuated the TXB2 level and lowered arterial serotonin transporter mRNA expression, although it did not alter plasma serotonin or sP-selectin levels. C-reactive protein and leptin levels were significantly reduced by PL and n-3 FA supplementation. In addition, PL decreased plasma total- and low-density lipoprotein-cholesterol levels, as did n-3 FA treatment. These results indicated that the PL ethanol extract may have the potential to improve circulation by inhibiting blood coagulation and platelet activation and by reducing plasma cholesterol levels.

KEYWORDS:

blood circulation; coagulation; lipid metabolism; persimmon tree leaves; platelet activation

PMID:
26061228
PMCID:
PMC4492556
DOI:
10.1089/jmf.2014.3307
[Indexed for MEDLINE]
Free PMC Article

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