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METHOD FOR PRODUCING NOVEL GYNOSTEMMA PENTAPHYLLUM EXTRACTS HAVING INCREASED AMOUNTS OF DAMULIN A AND DAMULIN B AND PHARMACEUTICAL COMPOSITION FOR TREATING METABOLIC DISEASES USING THE SAME
METHOD FOR PRODUCING NOVEL GYNOSTEMMA PENTAPHYLLUM EXTRACTS HAVING INCREASED AMOUNTS OF DAMULIN A AND DAMULIN B AND PHARMACEUTICAL COMPOSITION FOR TREATING METABOLIC DISEASES USING THE SAME
The present invention relates to a use of an AMP-activated protein kinase (AMPK) activator for relieving and treating metabolic diseases wherein AMPK is an energy sensor and key enzyme for regulating lipid and glucose metabolism in a living body. When AMPK is activated, synthesis of lipid and cholesterol is inhibited; body fat is decreased; lowering of blood glucose is facilitated; and obesity, diabetes, and hyperlipidemia are relieved. In the present invention, novel compounds Damulin A (2α,3â,12â-trihydroxydammar-20(22)-E,24-diene-3-O-[â-D-glucopyranosyl-(1→)-â-D-glucopyranoside]) and Damulin B (2α,3â,12â-trihydroxydammara-20,24-diene-3-O-[â-D-glucopyranosyl-(1→)-â-D-glucopyranoside]) are used as the AMPK activator for the active ingredients for relieving and treating metabolic diseases including obesity, diabetes, and hyperlipidemia. In addition, the present invention provides a method for increasing the amount of Damulin A or Damulin B which is the valid indicator for AMPK activation by treating Gynostemma pentaphyllum extracts at high temperature and high pressure. Therefore, the present invention also provides a use of novel Gynostemma pentaphyllum extracts with remarkably increased capacity of activating AMPK for relieving or treating metabolic diseases such as obesity, diabetes, and hyperlipidemia.
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