Method of promoting synthesis of nerve growth factor
AssigneeNagase & Co., Ltd.
InventorsKunio Kosaka, Toshitsugu Miyazaki, Hisatomi Ito
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Abstract
A method of promoting the synthesis of nerve growth factor comprising administering an effective amount of rosemary and/or sage extracts or carnosic acid and/or carnosol as an effective ingredient to a subject requiring such promotion. The present method can safely and efficiently promote the production of NGF in the living body, without being accompanied by a side effect such as a loss of a quantitative balance of hormones in the living body.
Claims6
A method of promoting the synthesis of nerve growth factor comprising administering an effective amount of at least one plant extract having an effect of promoting the synthesis of nerve growth factor selected from the group consisting of rosemary and sage extracts as an effective ingredient to a subject requiring such promotion.
A method of producing a plant extract having an effect of promoting the synthesis of nerve growth factor comprising the steps of:
- soaking rosemary or sage in ethanol or an aqueous ethanol solution having an ethanol concentration of 80% (v/v) to 100% (v/v) to obtain a first extract;
- adding water to the first extract so as to give an ethanol concentration of not greater than 40% (v/v), to deposit a precipitate having an effect of promoting the synthesis of nerve growth factor;
- and
- separating the precipitate to obtain the desired plant extract.
A method of promoting the synthesis of nerve growth factor comprising administering an effective amount of at least one ingredient selected from the group consisting of carnosic acid and carnosol as an effective ingredient to a subject requiring such promotion.
Dependencies are inferred from the claim text.