WO2014163151A1 - 酵母培養物及び内服組成物 - Google Patents
酵母培養物及び内服組成物 Download PDFInfo
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- WO2014163151A1 WO2014163151A1 PCT/JP2014/059868 JP2014059868W WO2014163151A1 WO 2014163151 A1 WO2014163151 A1 WO 2014163151A1 JP 2014059868 W JP2014059868 W JP 2014059868W WO 2014163151 A1 WO2014163151 A1 WO 2014163151A1
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- methylthioadenosine
- yeast
- yeast culture
- sleep
- salt
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K36/00—Medicinal preparations of undetermined constitution containing material from algae, lichens, fungi or plants, or derivatives thereof, e.g. traditional herbal medicines
- A61K36/06—Fungi, e.g. yeasts
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L33/00—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof
- A23L33/10—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof using additives
- A23L33/14—Yeasts or derivatives thereof
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/70—Carbohydrates; Sugars; Derivatives thereof
- A61K31/7042—Compounds having saccharide radicals and heterocyclic rings
- A61K31/7052—Compounds having saccharide radicals and heterocyclic rings having nitrogen as a ring hetero atom, e.g. nucleosides, nucleotides
- A61K31/706—Compounds having saccharide radicals and heterocyclic rings having nitrogen as a ring hetero atom, e.g. nucleosides, nucleotides containing six-membered rings with nitrogen as a ring hetero atom
- A61K31/7064—Compounds having saccharide radicals and heterocyclic rings having nitrogen as a ring hetero atom, e.g. nucleosides, nucleotides containing six-membered rings with nitrogen as a ring hetero atom containing condensed or non-condensed pyrimidines
- A61K31/7076—Compounds having saccharide radicals and heterocyclic rings having nitrogen as a ring hetero atom, e.g. nucleosides, nucleotides containing six-membered rings with nitrogen as a ring hetero atom containing condensed or non-condensed pyrimidines containing purines, e.g. adenosine, adenylic acid
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/20—Hypnotics; Sedatives
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
- C12N1/14—Fungi; Culture media therefor
- C12N1/16—Yeasts; Culture media therefor
- C12N1/18—Baker's yeast; Brewer's yeast
Definitions
- the present invention relates to a yeast culture, an internal use composition and its use.
- Methylthioadenosine is known as a biological component.
- Non-Patent Document 1 describes that in sake brewing, S-adenosylmethionine and methylthioadenosine are contained in the yeast culture solution, and S-adenosylmethionine in fresh liquor is converted to methylthioadenosine when stored in hot sake. It is described to do.
- Patent Document 1 describes that when a microorganism having S-adenosylmethionine-producing ability is cultured in a methionine-containing medium, methylthioadenosine is produced. The maximum value is 0.0204 in terms of the amount of methylthioadenosine per dry cell. % (See comparative example of Patent Document 1).
- Non-Patent Document 2 describes that the addition of methylthioadenosine increases the cAMP concentration in S49 cells, and that the increase in cAMP concentration is involved in growth inhibition.
- Non-Patent Document 1 the content of methylthioadenosine in fresh sake in Non-Patent Document 1 and the content of methylthioadenosine in the culture in Patent Document 1 were both small. Further, Non-Patent Document 2 did not describe anything other than growth inhibition as an effect resulting from an increase in cAMP concentration.
- An object of the present invention is to provide a yeast culture and composition having a high methylthioadenosine content, and to provide a new use of the yeast culture and composition.
- the present invention provides the following [1] to [12].
- [1] A yeast culture containing methylthioadenosine or a salt thereof and having a methylthioadenosine content of 5.5% by mass or more per dry mass of the yeast culture.
- [2] A yeast culture containing an S-adenosylmethionine degradation product.
- [3] The yeast culture according to [2] above, wherein the S-adenosylmethionine degradation product contains methylthioadenosine.
- [4] The yeast culture according to [3] above, wherein the content of methylthioadenosine per dry mass of the yeast culture is 5.5% by mass or more.
- a method for producing a culture [6] Including yeast and methylthioadenosine or a salt thereof, and A / (A + B) is 1 / 10,000 or more and 1/2 or less [wherein A is the content of methylthioadenosine in the composition and B is the composition Each yeast content in the product is represented. ], An internal use composition. [7] The internal use composition according to the above [6], wherein A / (A + B) is from 1/750 to 1/5.
- this invention can provide the following embodiment in other aspects.
- a method for promoting sleep comprising administering the yeast culture according to any one of [1] to [5] or the internal use composition according to any one of [7] to [10].
- the yeast culture according to any one of [1] to [5] above or the oral composition according to any one of [7] to [10] above is orally administered.
- the method of. (3) A sleep promoter for the yeast culture according to any one of the above [1] to [5] or the internal use composition according to any one of the above [7] to [10] is produced. Use for.
- yeast cultures and compositions having a high methylthioadenosine content are provided.
- the yeast culture and composition of the present invention can promote sleep and induce good natural sleep.
- FIG. 1 is a sleep progress diagram showing a general pattern of REM sleep and non-REM sleep.
- FIG. 2 is a graph showing the results of Experimental Example 1.
- the yeast is not particularly limited as long as it is a fungus that passes most of the life cycle as a single cell and buds or produces a partition wall to divide cells.
- yeast include Saccharomyces genus yeast and Shizosaccharomyces genus yeast. Saccharomyces cerevisiae (budding yeast) and preferable.
- the yeast culture means a mixture obtained by culturing yeast in a medium.
- the mixture usually contains yeast cells, cell components (cell fragments), products produced by metabolism of yeast, and the like.
- the yeast may be either live cells or dead cells.
- Yeast culture may be performed in a conventional manner according to culture conditions suitable for the species to which the yeast strain to be used belongs.
- cultivation of normal microorganisms, such as a carbon source, a nitrogen source, an inorganic salt, may be contained.
- the carbon source include glucose, sucrose, acetic acid, ethanol, molasses, sulfite pulp waste liquid, and the like.
- nitrogen-containing inorganic salts such as urea, ammonia, ammonium sulfate, ammonium chloride, and ammonium phosphate
- nitrogen-containing organic substances such as corn steep liquor (CSL), casein, yeast extract, and peptone
- inorganic salts include phosphates such as lime superphosphate and ammonium phosphate; potassium salts such as potassium chloride and potassium hydroxide; magnesium salts such as magnesium sulfate and magnesium hydrochloride; zinc; copper; manganese; Can be mentioned.
- the medium may further contain components such as vitamins, nucleic acid-related substances, and amino acids.
- the medium preferably contains at least ethanol and an amino acid (for example, methionine). When the medium is a solid medium, agar or the like is usually added.
- the medium may be a solid medium or a liquid medium.
- Examples of the culture mode in the case of a liquid medium include batch culture, fed-batch culture, continuous culture and the like, and any of these may be adopted.
- the culture temperature may be between 6 ° C. and 35 ° C., usually 20 to 35 ° C., preferably 25 to 32 ° C.
- the culture time may usually be 1 day or more and preferably 2 days or more and 10 days or less.
- methylthioadenosine is also referred to as 5'-deoxy-5'-methylthioadenosine.
- 5'-deoxy-5'-methylthioadenosine may be in either the anti-type or the syn-type.
- methylthioadenosine or a salt thereof may be abbreviated as MTA.
- the salt of methylthioadenosine is not particularly limited as long as it is a pharmacologically acceptable salt, and may be selected according to the dosage form.
- Suitable salts of methylthioadenosine include, for example, acid addition salts.
- the acid addition salt may be any of an inorganic acid addition salt and an organic acid addition salt. For example, hydrochloride, sulfate, nitrate, carbonate, phosphate, formate, oxalate, citrate , Ascorbate, methanesulfonate, 1,4-butanedisulfonate, 1,5-pentanesulfonate and p-toluenesulfonate.
- S-adenosylmethionine has a structure in which adenosine and methionine are linked via a methylsulfonyl bond.
- the optical isomers of methionine include L-form, D-form, and DL-form.
- methionine in the structure of S-adenosylmethionine may be any of the optical isomers.
- the salt of S-adenosylmethionine is not particularly limited as long as it is a pharmacologically acceptable salt, and can be selected according to the dosage form and the like.
- Suitable salts of S-adenosylmethionine include, for example, acid addition salts and halides. Specifically, hydrochloride, sulfate, p-toluenesulfonate (tosylate), sulfuric acid ⁇ p -Toluenesulfonate, methanesulfonic acid, trifluoromethanesulfonic acid, 1,4-butanedisulfonic acid, 1,5-pentanesulfonic acid, phosphate, chloride, bromide and the like. Of these, hydrochloride or tosylate is preferred.
- the yeast may contain at least one of methylthioadenosine and its salt, and may contain both of them.
- a preferred embodiment of the yeast culture of the present invention includes a yeast culture containing methylthioadenosine or a salt thereof.
- the content of methylthioadenosine or a salt thereof in the yeast culture can be shown as the content of methylthioadenosine per dry mass of the yeast culture.
- the content (content rate) of methylthioadenosine per dry mass means the percentage of the ratio of the net mass of methylthioadenosine contained in the yeast culture to the total amount of the yeast culture. If the yeast culture contains methylthioadenosine salt, the “net mass of methylthioadenosine” does not include the mass of the salt portion of methylthioadenosine salt.
- the methylthioadenosine content is preferably 5.5% by mass or more, more preferably 7% by mass or more, and still more preferably 8% by mass or more.
- the upper limit of the methylthioadenosine content is usually 50% by mass or less, preferably 40% by mass or less, more preferably 30% or less, still more preferably 20% by mass or less, and still more preferably 15% by mass. It is as follows.
- a high sleep-inducing effect can be obtained by setting the lower limit of the methylthioadenosine content per dry mass of the yeast culture to 5.5% by mass or more.
- the methylthioadenosine content per dry mass in the yeast culture can be defined, for example, by the following formula (1).
- Methylthioadenosine content per dry mass of yeast culture (a / b) ⁇ 100
- a in formula (1) is the content of methylthioadenosine (not including the mass of the salt portion of methylthioadenosine salt) (g) in a certain amount collected from the yeast culture. Quantification as methylthioadenosine can be performed by liquid chromatography.
- b is the dry weight (g) after 24 hours of freeze-drying (trap cooling temperature ⁇ 75 ° C.) of the same amount of yeast culture collected at the time of the above a measurement.
- the yeast may contain methylthioadenosine or a salt thereof, or may contain methylthioadenosine or a salt thereof outside the yeast cells.
- the first yeast culture of the present invention is presumed to contain some component that improves the physiological activity of methylthioadenosine or a salt thereof (for example, intracellular cAMP concentration increasing activity, sleep promoting activity, etc.). Therefore, the 1st yeast culture of this invention can be used for various uses which exhibit said physiological activity.
- yeast culture of the present invention Another preferred embodiment of the yeast culture of the present invention includes a yeast culture containing a degradation product of S-adenosylmethionine or a salt thereof.
- the degradation product of S-adenosylmethionine or a salt thereof means a component produced by decomposing S-adenosylmethionine and a component produced by decomposing a salt of S-adenosylmethionine.
- decomposition products of S-adenosylmethionine or a salt thereof include, for example, methylthioadenosine, S-adenosylhomocysteine, S-adenosylmethioniamine, S-aminobutyrolactone, adenosine, methionine, adenine, inosine, homoserine, homo Examples include cysteine and cystathionine.
- the degradation product of S-adenosylmethionine may be a single component or a combination of two or more components.
- the degradation product of S-adenosylmethionine is methylthioadenosine or preferably contains at least methylthioadenosine, more preferably methylthioadenosine or a salt thereof.
- the degradation product of S-adenosylmethionine or a salt thereof may be a degradation product of S-adenosylmethionine, a degradation product of a salt of S-adenosylmethionine, a degradation product of S-adenosylmethionine, and S- A combination of decomposition products of adenosylmethionine salt may be used.
- Degradation conditions for the degradation product of S-adenosylmethionine or a salt thereof are not particularly limited.
- the decomposition include decomposition by heating, decomposition by enzyme, acid decomposition, alkali decomposition, decomposition by chemical reaction, etc. Among these, decomposition by heating is preferable.
- the content of the degradation product of S-adenosylmethionine or a salt thereof in the yeast culture can be shown as the content of methylthioadenosine contained in the degradation product per dry mass of the yeast culture.
- the content (content rate) of methylthioadenosine per dry mass means the percentage of the ratio of the net mass of methylthioadenosine contained in the yeast culture to the total amount of the yeast culture. If the yeast culture contains methylthioadenosine salt, the “net mass of methylthioadenosine” does not include the mass of the salt portion of methylthioadenosine salt.
- the methylthioadenosine content per dry mass in the yeast culture of the present invention is preferably 5.5% by mass or more, more preferably 7% by mass or more, and further preferably 8% by mass or more. Thereby, the yeast culture of this invention can exhibit the physiological effect of methylthio adenosine or its salt efficiently.
- the upper limit of the methylthioadenosine content is usually 50% by mass or less, preferably 40% by mass or less, more preferably 30% or less, still more preferably 20% by mass or less, and still more preferably 15% by mass. It is as follows. The measurement of the methylthioadenosine content per dry mass in the yeast culture is as described in the section of the first yeast culture of the present invention.
- the yeast culture containing a degradation product of S-adenosylmethionine or a salt thereof may contain yeast-containing degradation products of S-adenosylmethionine or a salt thereof, A degradation product of silmethionine or a salt thereof may be contained.
- the second yeast culture of the present invention is a physiological activity of a degradation product of S-adenosylmethionine or a salt thereof (for example, an activity of increasing intracellular cAMP concentration, a physiological activity of methylthioadenosine therein, a sleep promoting activity, etc. ) Is presumed to contain some component that improves. Therefore, the 2nd yeast culture of this invention can be used for various uses which exhibit said physiological activity.
- the method for producing the yeast culture of the present invention is not particularly limited, but the yeast culture containing S-adenosylmethionine or a salt thereof can be easily produced by heating, and the above method is preferred. Both the first yeast culture and the second yeast culture of the present invention are preferably produced by the method described above.
- the yeast containing S-adenosylmethionine or a salt thereof may be a yeast that originally contains S-adenosylmethionine or a salt thereof, or a yeast that does not originally contain S-adenosylmethionine or a salt thereof.
- Yeast obtained by producing S-adenosylmethionine may also be used.
- An example of a method for producing S-adenosylmethionine or a salt thereof in yeast includes a method in which yeast is cultured to produce S-adenosylmethionine or a salt thereof in the yeast (intracellular).
- the obtained culture solution may be used as it is as a yeast culture containing S-adenosylmethionine or a salt thereof, or the yeast recovered after the culture is treated with S-adenosylmethionine or a salt thereof.
- You may use as yeast to contain.
- a dried yeast culture obtained by drying the culture medium after culturing as it is or after collecting the bacteria may be used.
- components such as stabilizers and excipients may be added to the yeast culture weighed according to formula (1), and then the following heating operation may be performed.
- the conditions for heating the yeast culture containing S-adenosylmethionine or a salt thereof are not particularly limited.
- the temperature is usually 40 ° C. or higher, preferably 50 ° C. or higher, more preferably 60 ° C. or higher, and still more preferably 80 ° C. or higher.
- the upper limit is usually 200 ° C. or lower, preferably 180 ° C. or lower, more preferably 160 ° C. or lower, and still more preferably 120 ° C. or lower.
- the temperature is usually 40 ° C. or higher and 200 ° C. or lower, preferably 50 ° C. or higher and 180 ° C. or lower, more preferably 60 ° C. or higher and 160 ° C. or lower, and still more preferably 80 ° C. or higher and 120 ° C. or lower.
- the treatment time may be adjusted depending on the degree of formation of methylthioadenosine or a salt thereof.
- heating method there is no particular limitation on the heating method.
- a heating method in the case of a liquid yeast culture for example, a method in which a container in which the yeast culture is put is heated while stirring in a heating apparatus such as an electric heater or an electric heater, and a container in which the yeast culture is put in a hot water bath.
- the method of heating with dryers, such as a dryer and a shelf dryer, etc. are mentioned.
- Examples of the heating method in the case of a solid yeast culture such as powder include a method of heating in an autoclave, a method of heating a sealed container with hot water, a fluidized bed dryer, a rotary aeration dryer, and a shelf dryer. And a method of heating with a dryer such as a method of heating with a roaster.
- a yeast culture having a high content of methylthioadenosine or a salt thereof can be obtained by drying the yeast culture following the heating or standing treatment.
- the method for drying the culture is not particularly limited, and any of the methods commonly used for preparing dry yeast cells may be used. For example, freeze-drying method, spray-drying method And drum drying method.
- a yeast culture having a high content of methylthioadenosine or a salt thereof excellent in handleability can be obtained.
- the internal use composition of the present invention contains yeast and methylthioadenosine or a salt thereof.
- Methylthioadenosine or a salt thereof can be obtained by a known method, and may be a commercially available product.
- Examples of the commercially available product of methylthioadenosine or a salt thereof include a commercially available product manufactured by Sigma-Aldrich and a commercially available product manufactured by Santa Cruz, and the former is preferred.
- part or all of methylthioadenosine may be contained in yeast.
- the yeast may be live bacteria, dead bacteria, or bacterial cell components.
- the yeast may be a commercial product.
- the yeast may be used alone or in combination of two or more different varieties and forms.
- Each of methylthioadenosine and its salt may be one kind alone, or may be a combination of two or more kinds such as chemical structure, kind of salt and form.
- the internal use composition should just contain methylthio adenosine and / or its salt, and may contain both.
- the mass ratio represented by the following formula (2) is preferably 1 / 10,000 or more and 1/2 or less, more preferably 1/750 or more and 1/5 or less, It is further preferably 1/100 or more and 1/5 or less, and further preferably 5.5 / 100 or more and 1/5 or less.
- a / (A + B) is 5.5 / 100 or more and 50/100 or less, both the bitter taste of methylthioadenosine and the residual feeling in the mouth of yeast can be reduced:
- A is the content of methylthioadenosine in the composition.
- methylthioadenosine content in the composition is meant the net amount of methylthioadenosine contained in the composition.
- the oral composition contains methylthioadenosine salt
- the methylthioadenosine content does not include the mass of the salt portion of methylthioadenosine salt.
- the yeast contains methylthioadenosine or a salt thereof, the net amount of methylthioadenosine contained in the yeast is also reflected in the methylthioadenosine content.
- B is the yeast content in the composition.
- yeast and methylthioadenosine or a salt thereof may be mixed, and the production conditions are not particularly limited.
- a solvent such as an aqueous methylcellulose solution
- a solvent such as an aqueous methylcellulose solution
- the presence form of yeast and methylthioadenosine or a salt thereof in the internal use composition of the present invention is not particularly limited. Usually, the aspect in which yeast contains part or all of methylthioadenosine or a salt thereof may be employed.
- the internal use composition of the present invention can improve the physiological activity of methylthioadenosine or a salt thereof (for example, intracellular cAMP concentration increasing activity, sleep promoting activity) by a combination of yeast and methylthioadenosine or a salt thereof. Guessed. Therefore, the internal use composition of this invention can be used for various uses which exhibit said physiological activity.
- methylthioadenosine or a salt thereof for example, intracellular cAMP concentration increasing activity, sleep promoting activity
- each or a combination of both is a sleep promoting agent (sleep promoting composition), particularly a non-REM sleep promoting agent, more preferably deep. It is useful as an active ingredient of a sleep promoting agent (deep sleep promoting composition).
- the sleep promoting effect means an effect of extending the ratio of the non-REM sleep time to the sleep time.
- Non-REM sleep can be determined by polysomnograph analysis (eg, electroencephalogram, electrooculogram, electromyogram).
- electroencephalogram non-REM sleep can be determined by a decrease in alpha waves (for example, 8 to 3 Hz in humans) and an increase in delta waves (for example, 0.5 to 4.5 Hz in humans).
- the measured electroencephalogram can also be determined using automatic analysis software such as SleepSign (registered trademark). It is preferable that the ratio of the deep sleep time is high in the non-REM sleep time.
- “Promoting non-REM sleep” means that 1) the state of non-REM sleep is observed for a longer period of time compared to the state to be compared (for example, the state before ingestion of the internal use composition of the present invention), 2) It means that the effect of either deeper non-REM sleep or 3) the smooth transition to non-REM sleep is observed.
- “Deep sleep” means sleep in which the depth of sleep is a certain level or more in humans, and the depth of layer III or higher when non-REM sleep is classified into four stages of I to IV layers (FIG. 1). It means the sleep state in During sleep in layers III and IV, the occupancy of the delta wave (0.5-4.5 Hz) relative to the entire brain wave (0.5-20 Hz) is more than a certain level. It is known that the power value is high. Therefore, deep sleep can also be defined as sleep with a high delta power value. The delta power value can be measured using, for example, a polysomnography inspection apparatus, and the “depth of sleep”, which is the sum of sleep depth and time, is obtained by multiplying the delta power value by time. Defined.
- “Promoting deep sleep” means that 1) deep sleep is observed for a longer period of time compared to the state to be compared (for example, the state before administration of a sleep enhancer), 2) depth of deep sleep It means that the effect of either deepening the depth or 3) the smooth transition to deep sleep is observed. That is, in an experimental system using a mouse or a guinea pig, a value obtained by multiplying the delta power value by time may be increased.
- Natural sleep refers to sleep that does not cause loss of direct reflex.
- Direct reflection is a reflection motion that restores the head to a normal position with respect to the direction of gravity, and is also referred to as bounce reflection.
- Loss of direct reflex in rodent animals such as mice and rats can be confirmed, for example, as a state in which a mouse or rat placed in the supine or dorsal position does not return to the prone position within 30 seconds.
- the sleeping animal When the sleeping animal is placed in a supine or dorsal position, if it immediately wakes up from sleep or quickly returns to the prone position, the sleep does not lose its direct reflex It is sleep.
- direct reflection there is no equivalent of “direct reflection” as defined by animals.
- the state of “not losing the right-angled reflection” corresponds to sleep that can be easily awakened, for example, when the shoulder is struck, and can be defined as natural sleep. it can.
- Anesthesia causes the loss of right-angle reflexes against natural sleep. Loss of direct reflex in mice or rats is known as an evaluation index of anesthetic effect.
- the anesthetic effect of an anesthetic such as pentobarbital or other drugs can be evaluated by the increase in the number of animals that have lost the right reflex.
- the electroencephalogram of a delta wave increases in both cases, but in anesthesia with anesthesia or a conventional hypnotic drug, sleep without using anesthesia or a conventional hypnotic drug at 15 to 20 Hz.
- An increase in brain waves in the frequency band that is sometimes not seen is observed.
- it has not been clarified at present what causes the electroencephalogram in the frequency band that cannot be seen during sleep without anesthesia or conventional hypnotics, there is a relationship with anesthesia or poor awakening due to conventional hypnotics. Inferred.
- the content of the yeast culture in the sleep promoting agent of the present invention is not particularly limited, and can be appropriately adjusted according to various conditions such as an effective amount that can exert the effect.
- an effective amount that can exert the effect There is no restriction
- the sleep promoting agent of the present invention may be mixed or used in combination with components (including sleeping pills) that can promote sleep other than the yeast culture and internal use composition of the present invention.
- a sleeping pill what is called a sleep improving agent, a sleep inducer, etc. may be contained, for example.
- the mixed form with the kind or quantity of an anesthetic that causes the disappearance of the direct reflex is excluded.
- the sleep-promoting agent of the present invention comprises a preparation consisting essentially only of the yeast culture and / or internal composition of the present invention, or the yeast culture and / or internal composition of the present invention, the yeast culture and the Other ingredients other than the internal use composition can be made into a preparation (composition) containing one or more kinds.
- the other components contained in the sleep promoter of the present invention are not particularly limited as long as the effects of the present invention are not essentially impaired.
- the other components include excipients, disintegrants, binders, lubricants, coating agents, colorants, color formers, corrigents, flavoring agents, antioxidants, preservatives, flavoring agents, and acidity.
- Pharmacologically acceptable additives such as agents, sweeteners, fortifiers, vitamins, swelling agents, thickeners, and surfactants.
- the effect of promoting sleep various properties necessary for the preparation (for example, preparation stability) are not impaired, and the final product (for example, food and drink, pharmaceutical, quasi-drug, nutritional supplement (supplement) ) Etc.) may be selected from one or more additives depending on the dosage form.
- the other component contained in the sleep promoting agent of the present invention may be one type or a combination of two or more types.
- the dosage form of the sleep promoting agent of the present invention is not particularly limited as long as the yeast culture and / or internal use composition of the present invention can be used as an active ingredient.
- dosage forms for oral administration include liquid (liquid), syrup (syrup), solid (tablet), capsule (capsule), powder (granule, fine granule), soft capsule ( Soft capsules), semi-liquid, cream, and paste.
- dosage forms for parenteral administration include liquids (injections, nasal drops), mists (sprays, inhalants) and the like. These formulations can be prepared by mixing the yeast culture of the present invention with a pharmacologically acceptable medium.
- the dosage of the sleep promoting agent of the present invention is not particularly limited as long as the effects of the present invention are not impaired, and can be appropriately adjusted depending on factors such as the age and condition of the administration target living body.
- the preferable dose for obtaining the desired effect is the dose (mg / day) of methylthioadenosine or a salt per day for an adult, and the lower limit thereof is preferably 0.01 mg or more, more preferably 0.1 mg or more. More preferably, it is 1 mg or more, and still more preferably 10 mg or more.
- the upper limit becomes like this. Preferably it is 1000 mg or less, More preferably, it is 500 mg or less, More preferably, it is 100 mg or less.
- the administration mode of the sleep promoting agent of the present invention is not particularly limited, and may be either oral administration or parenteral administration, but oral administration is preferable because of less invasiveness.
- oral administration include oral administration and sublingual administration.
- parenteral administration include intravenous administration, intramuscular administration, subcutaneous administration, transdermal administration, nasal administration, and pulmonary administration.
- the time of administration of the sleep promoting agent of the present invention is not particularly limited, it is usually administered before bedtime, preferably administered from 3 hours before bedtime to bedtime, and administered between 2 hours before bedtime and bedtime. More preferably, it is more preferably administered from 1 hour before bedtime to bedtime, and even more preferably administered 1 hour before bedtime.
- the subject who takes the sleep promoter of the present invention is not particularly limited.
- people who are ingested may feel sleepy, sleepy when waking up, poor sleep, lack of deep sleep (cannot sleep deeply), bad dreams, and fatigue after sleep.
- Examples include subjects who are dissatisfied and subjects who feel fatigue and want to improve their subjective sleep feeling.
- the subject who does not have a special problem can be ingested on a daily basis for the purpose of maintaining good sleep, preventing sleep disorders, and promoting natural sleep more.
- the sleep promoter of the present invention may be used as an additive for food and drink, a pharmaceutical additive, and an additive for quasi drugs. Thereby, the effect which promotes natural sleep can be provided to food-drinks, a medicine, and a quasi-drug.
- the food / beverage products containing the sleep promoting agent of the present invention can be used as a food / beverage product expected to have the sleep promoting effect as described above and the effects associated therewith.
- examples of such foods and beverages include health foods, functional foods, dietary supplements (supplements), foods for specified health use, medical foods, foods for the sick, foods for infants, foods for nursing care, foods for the elderly Etc.
- the sleep promoter of the present invention can increase the non-REM sleep time during sleep as compared to the case where the sleep promoter of the present invention is not administered, as shown in the following examples. Therefore, application to the prevention and treatment of diseases associated with reduced sleep quality by shortening non-REM sleep time, decreasing sleep depth, or both is also expected.
- the sleep promoting agent of the present invention can promote natural sleep, it can also be used as a natural sleep inducing agent. “Inducing natural sleep” refers to inducing sleep without loss of direct reflex. Since the natural sleep inducer of the present invention can promote natural sleep, it can contribute to maintaining a good sleep pattern or restoring a disturbed sleep pattern to a good sleep pattern.
- the embodiment of the dosage may be applied to the embodiment of the sleep promoting agent of the present invention.
- a drink a soft drink, a carbonated drink, a nutritive drink, a powdered drink, a fruit drink, a milk drink, a jelly drink etc.
- confectionery cookie, cake, gum, candy
- processed fishery products kamaboko, chikuwa, hanpen, etc.
- livestock products hamburger, ham, sausage, winner, cheese, butter, yogurt, Fresh cream, margarine, fermented milk, etc.
- soup powder soup, liquid soup, etc.
- staple foods rice, noodles (dried noodles, raw noodles), bread, cereal, etc.
- seasonings mayonnaise, shortening, dressing, Source, sauce, soy sauce, etc.
- the food and drink of the present invention are health food, functional food, health supplement (supplement), nutrition supplement, specific health food, medical food, sick food, infant food, nursing food, elderly It may be a food or drink such as food for consumers.
- health supplements are preferred, and tablet-like health supplements are more preferred.
- Examples 1 to 13 and Comparative Examples 1 to 3 ⁇ Sample preparation>
- yeast Nisshin Foods Co., Ltd., trade name: Nisshin Super Camellia Dry Yeast
- MTA methylthioadenosine or a salt thereof
- Sigma-Aldrich trade name: 5′-Deoxy-5 ′-(methylthio) adenosine
- yeast cultures each containing MTA (hereinafter referred to as MTA-containing yeast culture) were used.
- the preparation method of the MTA-containing yeast culture was as follows. A yeast culture powder containing S-adenosylmethionine or a salt thereof (manufacturer name: Iwata Chemical Industry Co., Ltd., trade name: Amy) is heated at 120 ° C. for 20 minutes using a dryer, and MTA-containing yeast culture is obtained. Got.
- the mass ratio of MTA in each example is as shown in Table 1.
- Mass ratio is the ratio of methylthioadenosine content to the total of methylthioadenosine content and yeast content when the sample is a composition.
- the sample is an MTA-containing yeast culture, it is the mass ratio of MTA in the yeast culture.
- the methylthioadenosine content of the yeast culture of the sample is defined by the above-described formula (1).
- the sample of Example 1 was measured by a known method capable of separating S-adenosylmethionine and MTA by high performance liquid chromatography.
- the methylthioadenosine content when the sample is a composition is defined by equation (2) above.
- Example 1 Each sample of Examples 1 to 13 and Comparative Examples 1 to 5 was allowed to act on HEK cells (Perkin Elmer, cAMPZen (cultured cells for cAMP assay)) for 30 minutes. Thereafter, in order to measure the intracellular cAMP concentration by FRET (fluorescence resonance energy transfer), Eu-cAMP tracer and ULlight-anti-cAMP (both manufactured by PerkinElmer, Inc., reagent in LANCE Ultra cAMP Kit) were added. Incubated for hours. Thereafter, the signal value was measured under the following conditions. The intracellular cAMP concentration increasing activity was calculated by the following formula (3).
- Intracellular cAMP concentration increasing activity% ⁇ (Fluorescence signal value when no sample is added ⁇ Sample fluorescence signal value) / (Fluorescence signal value when no sample is added-fluorescence signal value when MTA alone is administered) ⁇ ⁇ 100
- FIG. 2 shows the results of the activity of increasing intracellular cAMP concentration in each Example. The following is apparent from FIG.
- Examples 3-7 were more active than Comparative Examples 1-5. This indicates that the yeast culture of the present invention has an effect of increasing the intracellular cAMP concentration.
- Example 7 and 8 were more active than Example 8 although Example 7 had the same MTA mass ratio. This indicates that when MTA is contained in yeast, there is an effect of significantly increasing the intracellular cAMP concentration more than when yeast is added to MTA.
- composition and yeast culture of the present invention exhibit a sleep promoting effect.
- Example 14 and Comparative Examples 6-8 ⁇ Evaluation sample and dose> As a sample of Comparative Example 6 (control solution), a 0.5% by mass methylcellulose aqueous solution was used. The dose was 10 mL / kg body weight.
- the sample of Comparative Example 7 is MTA (manufactured by Sigma-Aldrich, trade name: 5′-Deoxy-5 ′-(methylthio) adenosine) 0.5% by mass methylcellulose (manufactured by Sigma-Aldrich, trade name: Methyl cellulose).
- MTA manufactured by Sigma-Aldrich, trade name: 5′-Deoxy-5 ′-(methylthio) adenosine
- Methyl cellulose Methyl cellulose
- Example 14 The sample of Example 14 was prepared as follows. Commercially available S-adenosylmethionine-containing yeast culture powder (manufacturer name: Iwata Chemical Co., Ltd., trade name: Amy) was heat-treated at 120 ° C. for 20 minutes. The methylthioadenosine content in the obtained yeast culture was 275 mg, the dry weight of the yeast culture (including MTA) was 5000 mg, and the dry weight of the yeast cultures other than MTA was 4725 mg. That is, the mass ratio of the methylthioadenosine content to the yeast culture (expressed by the above formula (1)) is 5.5% by mass, and the ratio expressed by the above formula (2) is 275 / (275 + 4725).
- the resulting product was suspended in a 0.5 mass% methylcellulose aqueous solution, and the suspension was used as a sample.
- the dose was 275 mg / kg body weight as yeast culture (10 mL / kg body weight as suspension, 15 mg / kg body weight as MTA amount).
- the sample of Comparative Example 8 was a sample containing S-adenosylmethionine-containing yeast and was prepared as follows.
- the same commercially available S-adenosylmethionine-containing yeast culture powder as used in Example 14 was suspended in a 0.5 mass% aqueous methylcellulose solution, and the suspension was used as a sample.
- the dose was 275 mg / kg body weight as a yeast containing S-adenosylmethionine (10 mL / kg body weight as a suspension, 0 mg / kg body weight as an MTA amount).
- Electroencephalogram and myoelectric electrodes were attached to 8-week-old male C57BL / 6 mice purchased from Japan SLC. After the electrodes were mounted, they were recovered for 10 days in a recovery chamber. Then, it moved to the recording chamber and the cable was connected.
- mice Immediately before the start of the dark period, each sample was orally administered to each administration group, and the electroencephalogram was recorded for 24 hours.
- the mice gavaged 275 mg / kg body weight as yeast cultures on the day different from the day on which the electroencephalogram measurement was performed, when touched to make the supine position, they showed arousal, It was confirmed that these sleeps were in a state that “the direct reflex was not lost”.
- the electroencephalogram was automatically analyzed by SleepSign (registered trademark) Ver 3.0, and the evaluator confirmed the result of the automatic analysis and classified it into sleep stages of wakefulness, REM sleep and non-REM sleep.
- the total integrated amount (unit: sec) of the non-REM sleep time from the EEG measurement time to 4 hours later is calculated, the percentage of the non-REM sleep amount at the time of non-administration (baseline) of the same individual is obtained, and the average value is shown in Table 2 It is shown in the column of “sleep amount”.
- Example 14 the ratio of the non-REM sleep amount at the time of administration to the non-REM sleep amount at the time of non-administration was very high as compared with Comparative Examples 6 to 8. This has shown that the yeast culture of this invention has the outstanding sleep improvement effect.
- Each sample was a yeast culture containing MTA in the amounts shown in Table 3, and was prepared as follows.
- Yeast Nisshin Foods Co., Ltd., trade name: Nisshin Super Camellia Dry Yeast
- MTA methylthioadenosine or a salt thereof
- Sigma-Aldrich trade name: 5′-Deoxy-5′- (Methylthio) adenosine
- the average value of 10 scores of the residual feeling in the mouth calculated according to the above evaluation criteria was obtained, and the residual feeling in the mouth was determined based on the numerical value.
- the results are shown in Table 3.
- the mass ratio of MTA is the mass ratio of MTA to yeast culture.
- Example 20 Preparation of evaluation sample>
- the MTA-containing yeast culture was prepared as follows.
- Commercially available S-adenosylmethionine-containing yeast culture powder (manufacturer name: Mitsubishi Gas Chemical Co., Ltd., trade name: SAMe-containing dry yeast) was heat-treated at 120 ° C. for 20 minutes.
- the methylthioadenosine content in the obtained yeast culture was 320 mg
- the dry weight of the yeast culture (including MTA) was 5000 mg
- the dry weight of the yeast cultures other than MTA was 4680 mg.
- the mass ratio of the methylthioadenosine content to the yeast culture (expressed by the above formula (1)) is 6.4% by mass, and the ratio expressed by the above formula (2) is 320 / (4680 + 320). It was 6.4 / 100.
- Example 20 a tablet containing the above MTA-containing yeast culture (methylthioadenosine content in 4 tablets: 21 mg) was prepared. As a sample of Comparative Example 9, a placebo tablet not containing MTA-containing yeast was prepared. Details of each composition are as shown in Table 4.
- Example 4 (Evaluation in human) Six subjects were orally ingested 4 tablets of the sample of the above Example 20 one hour before going to bed, and a two-electrode portable electroencephalograph (“Electroencephalograph Sleep Scope” manufactured by Sleep Well Co., Ltd.) was used. The brain waves were measured while the subject was sleeping. Similarly, the same six subjects were ingested four tablets of the sample of Comparative Example 9 one hour before going to bed, and a two-electrode portable electroencephalograph (EEG) manufactured by Sleep Well Co., Ltd. A total sleep scope ”) was worn, and the brain waves during the sleep of the subject were measured. For each subject, administration and electroencephalogram measurement were performed four times for each of the sample of Example 20 and the sample of Comparative Example 9.
- EEG two-electrode portable electroencephalograph
- each sample was orally ingested by the same six subjects, and after the subject went to bed, the subject's shoulder was beaten. As a result, it was confirmed for each subject that the subject woke up easily, that is, the sleep after each sample (the sample of Example 20 and Comparative Example 9) was orally ingested by each subject was natural sleep. .
- the electroencephalogram was analyzed by requesting Sleepwell.
- the depth of sleep can be known from the delta power value of the electroencephalogram during sleep. The greater the delta power value, the deeper the sleep depth.
- non-REM sleep appears immediately after going to bed, and REM sleep appears thereafter.
- the delta power value during non-REM sleep that appeared immediately after going to bed was taken as the delta power value in the early stage of sleep. .
- Delta power value varies depending on the individual. Therefore, after ingesting the sample of Example 20 or the sample of Comparative Example 9, the delta power value in the early stage of sleep was measured four times for each subject, and the average value of the four measured values was calculated. For each subject, the change rate (%) of the delta power value after ingestion of the MTA-containing yeast (sample of Example 20) relative to the delta power value after ingestion of the placebo (sample of Comparative Example 9) is calculated by the following equation (2). did.
- Delta power value change rate (%) ⁇ (Average value of delta power value after sample intake of Example 20) / (Average value of delta power value after sample intake of Comparative Example 9) ⁇ ⁇ 100
- Table 5 shows the rate of change of the delta power value.
- the rate of change of the delta power value is an average value of six subjects.
- Example 20 in which a MTA-containing yeast tablet was orally ingested as a sample, the delta power value in the early stage of sleep was larger than that in Comparative Example 9 in which a placebo tablet was orally ingested. This indicates that the yeast culture and internal use composition of the present invention can deepen non-REM sleep early in sleep, thereby promoting sleep and inducing good natural sleep. ing.
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Abstract
Description
〔1〕メチルチオアデノシン又はその塩を含有し、酵母培養物の乾燥質量あたりのメチルチオアデノシン含有量が5.5質量%以上の、酵母培養物。
〔2〕S-アデノシルメチオニン分解物を含有する酵母培養物。
〔3〕S-アデノシルメチオニン分解物がメチルチオアデノシンを含む、上記〔2〕に記載の酵母培養物。
〔4〕酵母培養物の乾燥質量あたりのメチルチオアデノシン含有量が5.5質量%以上である上記〔3〕に記載の酵母培養物。
〔5〕S-アデノシルメチオニン又はその塩を含有する酵母培養物を加熱してS-アデノシルメチオニン又はその塩を分解させる、上記〔1〕~〔4〕のいずれか一項に記載の酵母培養物の製造方法。
〔6〕酵母とメチルチオアデノシン又はその塩とを含み、A/(A+B)が、1/10000以上1/2以下である〔式中、Aは組成物中のメチルチオアデノシン含有量を、Bは組成物中の酵母含有量を、それぞれ表す。〕、内服組成物。
〔7〕A/(A+B)が、1/750以上1/5以下である、上記〔6〕に記載の内服組成物。
〔8〕A/(A+B)が、1/100以上1/5以下である、上記〔6〕に記載の内服組成物。
〔9〕A/(A+B)が、5.5/100以上1/5以下である、上記〔6〕に記載の内服組成物。
〔10〕上記〔1〕~〔4〕のいずれか一項に記載の酵母培養物及び/又は上記〔6〕~〔8〕のいずれか一項に記載の内服組成物を有効成分とする、睡眠促進剤。
〔11〕成人1人あたりのメチルチオアデノシン摂取量が0.01~1000mg/日となる投与量である、上記〔10〕に記載の睡眠促進剤。
〔12〕上記〔10〕又は〔11〕に記載の睡眠促進剤を含有する飲食品組成物。
(1)上記〔1〕~〔5〕のいずれか一項に記載の酵母培養物又は上記〔7〕~〔10〕のいずれか一項に記載の内服組成物を投与する、睡眠促進方法。
(2)上記〔1〕~〔5〕のいずれか一項に記載の酵母培養物又は上記〔7〕~〔10〕のいずれか一項に記載の内服組成物を経口投与する、上記(1)の方法。
(3)上記〔1〕~〔5〕のいずれか一項に記載の酵母培養物又は上記〔7〕~〔10〕のいずれか一項に記載の内服組成物の、睡眠促進剤を製造するための使用。
本発明において酵母は、生活環の大部分を単細胞で経過し、出芽、又は隔壁を生じて細胞分裂する菌類であれば、特に限定されない。酵母としては例えば、サッカロミセス(Saccharomyces)属酵母、シゾサッカロミセス(Shizosaccharomyces)属酵母を挙げることができ、サッカロミセス・セレビシエ(Saccharomyces cereviciae;出芽酵母)、シゾサッカロミセス・ポンベ(Shizosaccharomyces pombe;分裂酵母)が好ましい。
本発明の酵母培養物の好ましい態様としては、メチルチオアデノシン又はその塩を含む酵母培養物を挙げることができる。
式(1)
酵母培養物の乾燥質量あたりのメチルチオアデノシン含有量
=(a/b)×100
本発明の酵母培養物の別の好ましい態様としては、S-アデノシルメチオニン又はその塩の分解物を含有する酵母培養物を挙げることができる。
本発明の酵母培養物の製造方法は特に限定されないが、S-アデノシルメチオニン又はその塩を含有する酵母培養物を加熱することにより簡便に製造することができ、前記の方法が好ましい。本発明の第1の酵母培養物及び第2の酵母培養物のいずれも、前記の方法で製造することが好ましい。
本発明の内服組成物は、酵母とメチルチオアデノシン又はその塩とを含む。
式(2)
A/(A+B)
上記本発明の酵母培養物及び内服組成物は自然睡眠促進効果を発揮するので、それぞれは、又は両者の組み合わせは、睡眠促進剤(睡眠促進組成物)、特にノンレム睡眠促進剤、より好ましくは深睡眠促進剤(深睡眠促進組成物)の有効成分として有用である。
本発明の睡眠促進剤を含む飲食品は、上述のような睡眠促進効果及びこれに付随する効果が期待される飲食品として利用することができる。このような飲食品としては、例えば、健康食品、機能性食品、栄養補助食品(サプリメント)、特定保健用食品、医療用食品、病者用食品、乳児用食品、介護用食品、高齢者用食品等が挙げられる。
本発明の飲食品の形態に特に制限はなく、例えば、飲料(清涼飲料、炭酸飲料、栄養飲料、粉末飲料、果実飲料、乳飲料、ゼリー飲料など)、菓子類(クッキー、ケーキ、ガム、キャンディー、タブレット、グミ、饅頭、羊羹、プリン、ゼリー、アイスクリーム、シャーベットなど)、水産加工品(かまぼこ、ちくわ、はんぺんなど)、畜産加工品(ハンバーグ、ハム、ソーセージ、ウィンナー、チーズ、バター、ヨーグルト、生クリーム、マーガリン、発酵乳など)、スープ(粉末状スープ、液状スープなど)、主食類(ご飯類、麺(乾麺、生麺)、パン、シリアルなど)、調味料(マヨネーズ、ショートニング、ドレッシング、ソース、たれ、しょうゆなど)が挙げられる。更に、本発明の飲食品は、健康食品、機能性食品、健康補助食品(サプリメント)、栄養補助食品、特定保健用食品、医療用食品、病者用食品、乳児用食品、介護用食品、高齢者用食品等の飲食品であってもよい。これらのうち、健康補助食品が好ましく、タブレット状の健康補助食品がより好ましい。
<サンプルの調製>
実施例1~2、8~13及び比較例2~3では、酵母(日清フーズ株式会社製、商品名:日清スーパーカメリヤドライイースト)と、メチルチオアデノシン又はその塩(以下、MTAと称する。シグマ-アルドリッチ社製、商品名:5’-Deoxy-5’-(methylthio)adenosine)とを、混合物全体に占めるMTAの質量比が表1の通りとなるように混合した。得られる組成物をサンプルとした。
*:「質量比」は、サンプルが組成物の場合にはメチルチオアデノシン含有量と酵母の含有量の合計に占めるメチルチオアデノシン含有量の比である。サンプルがMTA含有酵母培養物の場合には酵母培養物中のMTAの質量比である。
HEK細胞(パーキンエルマー社製、cAMPZen(cAMPアッセイ用培養細胞))に対して実施例1~13及び比較例1~5の各サンプルを30分間作用させた。その後、FRET(蛍光共鳴エネルギー転移)による細胞内cAMP濃度を測定するため、Eu-cAMP tracer及びULight-anti-cAMP(いずれもパーキンエルマー社製、LANCE Ultra cAMP Kit中の試薬)を添加し、1時間インキュベートした。その後、下記の条件でシグナル値を測定した。細胞内cAMP濃度上昇活性は下記の式(3)で算出した。
Excitation wavelength:320nm
Emission wavelength:665nm
Integration time:100μs
Lag time:50μs
式(3):
細胞内cAMP濃度上昇活性%=
{(サンプル無添加時の蛍光シグナル値-サンプルの蛍光シグナル値)/
(サンプル無添加時の蛍光シグナル値-MTA単独投与時の蛍光シグナル値)}
×100
<評価サンプルと投与量>
比較例6のサンプル(コントロール溶液)として0.5質量%メチルセルロース水溶液を用いた。投与量は10mL/体重kgとした。
日本SLCより購入した8週齢雄性C57BL/6マウスに、脳波及び筋電用の電極を装着した。電極装着後、回復チャンバーにて10日間回復させた。その後、記録用チャンバーに移し、ケーブルを接続した。脳波解析ソフトであるSleepSign(登録商標)Ver 3.0(キッセイコムテック株式会社)にて脳波判別可否を確認後、3日間馴化させた。その後、脳波を24時間測定し、睡眠覚醒リズムが維持されているかどうかを確認し、各実施例及び比較例の投与群分けを実施した。各投与群は8匹とした(n=8)。
<評価サンプルの調製>
各サンプルは、MTAを表3に示す量含有する酵母培養物であり、以下のようにして調製した。酵母(日清フーズ株式会社製、商品名:日清スーパーカメリヤドライイースト)と、メチルチオアデノシン又はその塩(以下、MTAと称する。シグマ-アルドリッチ社製、商品名:5’-Deoxy-5’-(methylthio)adenosine)とを、混合物全体に占めるMTAの質量比が表3の通りとなるように混合した。得られる組成物をサンプルとした。
被験者10名がそれぞれサンプル50mgを経口摂取後、苦味の程度と口中への残存感を下記の基準で評価し、各パネラーの評点の平均値を求めた。苦味の評価ではMTAそのものの苦味を基準とし、これを1点として評価した。口中への残存感の評価では酵母のみでの残存感を基準とし、これを1点として評価した。
〔評点基準〕
5点:苦味を感じない
4点:苦味をやや感じる
3点:苦味を感じる
2点:苦味を強く感じる
1点:苦味を耐えがたく感じる
◎:平均値3.5点以上
○:平均値2.5点以上3.5点未満
△:平均値1.5点以上2.5点未満
×:平均値1.0点以上~1.5点未満
5点:口中への残存を感じない
4点:口中への残存をやや感じる
3点:口中への残存を感じる
2点:口中への残存を強く感じる
1点:口中への残存を耐えがたく感じる
<評価サンプルの調製>
MTA含有酵母培養物は、以下のようにして調製した。市販のS-アデノシルメチオニン含有酵母培養物粉末(メーカー名:三菱ガス化学株式会社、商品名:SAMe含有乾燥酵母)を120℃で20分加熱処理した。得られた酵母培養物中のメチルチオアデノシン含有量は320mg、酵母培養物(MTAを含む)の乾燥重量は5000mg、MTA以外の酵母培養物の乾燥重量は4680mgであった。すなわち、酵母培養物に対するメチルチオアデノシン含有量の質量比(前述の式(1)で表される)は6.4質量%であり、前述の式(2)で表される比率は320/(4680+320)となり、6.4/100であった。
6名の被験者に上記実施例20のサンプルの錠剤4錠を就寝1時間前に経口摂取させ、2電極方式の携帯型脳波測定器(スリープウェル(株)社製「脳波計スリープスコープ」)を装着し、被験者の睡眠中における脳波を測定した。また、同様にして、同じ被験者6名に上記比較例9のサンプルの錠剤4錠を就寝1時間前に経口摂取させ、2電極方式の携帯型脳波測定器(スリープウェル(株)社製「脳波計スリープスコープ」)を装着し、被験者の睡眠中における脳波を測定した。各被験者に対して、実施例20のサンプルおよび比較例9のサンプルそれぞれについて、投与および脳波測定を4回行った。
脳波は、スリープウェル(株)に依頼して解析した。睡眠の深さは睡眠中の脳波のデルタパワー値によって知ることができ、デルタパワー値が大きいほど睡眠の深さは深い。一般に、就寝直後にノンレム睡眠が出現し、その後レム睡眠が出現する。本実験では、就寝直後に出現したノンレム睡眠中のデルタパワー値(すなわち、就寝後一旦ノンレム睡眠に入ったその後にレム睡眠が出現するまでのデルタパワー値)を、睡眠初期のデルタパワー値とした。
デルタパワー値の変化率(%)=
{(実施例20のサンプル摂取後のデルタパワー値の平均値)/(比較例9のサンプル摂取後のデルタパワー値の平均値)}×100
Claims (12)
- メチルチオアデノシン又はその塩を含有し、
酵母培養物の乾燥質量あたりのメチルチオアデノシン含有量が5.5質量%以上の、
酵母培養物。 - S-アデノシルメチオニン分解物を含有する酵母培養物。
- S-アデノシルメチオニン分解物がメチルチオアデノシンを含む、請求項2に記載の酵母培養物。
- 酵母培養物の乾燥質量あたりのメチルチオアデノシン含有量が5.5質量%以上である請求項3に記載の酵母培養物。
- S-アデノシルメチオニン又はその塩を含有する酵母培養物を加熱してS-アデノシルメチオニン又はその塩を分解させる、請求項1~4のいずれか一項に記載の酵母培養物の製造方法。
- 酵母とメチルチオアデノシン又はその塩とを含み、
A/(A+B)が、1/10000以上1/2以下である〔式中、Aは組成物中のメチルチオアデノシン含有量を、Bは組成物中の酵母含有量を、それぞれ表す。〕、
内服組成物。 - A/(A+B)が、1/750以上1/5以下である、請求項6に記載の内服組成物。
- A/(A+B)が、1/100以上1/5以下である、請求項6に記載の内服組成物。
- A/(A+B)が、5.5/100以上1/5以下である、請求項6に記載の内服組成物。
- 請求項1~4のいずれか一項に記載の酵母培養物及び/又は請求項6~8のいずれか一項に記載の内服組成物を有効成分とする、睡眠促進剤。
- 成人1人あたりのメチルチオアデノシン摂取量が0.01~1000mg/日となる投与量である、請求項10に記載の睡眠促進剤。
- 請求項10又は11に記載の睡眠促進剤を含有する飲食品組成物。
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Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS5082287A (ja) * | 1973-11-27 | 1975-07-03 | ||
JPH01301692A (ja) * | 1980-04-22 | 1989-12-05 | Bioresearch Spa | 5’―デオキシ―5’―メチルチオアデノシンの新規な製造方法 |
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US3962034A (en) * | 1973-02-01 | 1976-06-08 | Ajinomoto Co., Inc. | Method for producing s-adenosylmethionine or methylthioadenosine by yeast |
US4454122A (en) * | 1981-04-27 | 1984-06-12 | Bioresearch S.R.L. | Adenosine derivatives of anti-inflammatory and analgesic activity, and therapeutic compositions which contain them as their active principle |
GB2116172B (en) * | 1982-02-25 | 1986-07-09 | Nippon Zeon Co | Microbial cells containing s-adenosyl methionine in high concentrations and process for production of s adenosyl methionine |
US9200250B2 (en) * | 2007-01-25 | 2015-12-01 | Mitsubishi Gas Chemical Company, Inc. | Method for production of dry yeast containing S-adenosyl-L-methionine and having excellent storage stability, product produced by the method, and molded composition of the dry yeast |
CN101173308A (zh) * | 2007-05-31 | 2008-05-07 | 武汉武大弘元股份有限公司 | 用基因工程菌发酵生产腺苷蛋氨酸的方法 |
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Publication number | Priority date | Publication date | Assignee | Title |
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JPS5082287A (ja) * | 1973-11-27 | 1975-07-03 | ||
JPH01301692A (ja) * | 1980-04-22 | 1989-12-05 | Bioresearch Spa | 5’―デオキシ―5’―メチルチオアデノシンの新規な製造方法 |
Non-Patent Citations (2)
Title |
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L.W. PARKS ET AL.: "Formation of alpha-amino-y- butyrolactone from s-adenosylmethionine", ARCH. BIOCHEM. BIOPHYS., vol. 75, 1958, pages 291 - 292 * |
S. HARVEY MUDD: "Enzymatic Cleavage of S-Adenosylmethionine", J. BIOL. CHEM., vol. 234, 1959, pages 87 - 92 * |
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CN105102609B (zh) | 2018-07-20 |
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