DE102005005270A1 - Use of a hydroxystilbene-containing active substance combination containing resveratrol and piceatannol precursors, to prevent and/or treat diseases caused by increased serum interleukin-6 level e.g. depression - Google Patents

Abstract

Hydroxystilbene-containing active substance combination (I) containing at least two compounds, resveratrol and piceatannol precursors, their derivatives, stereoisomers, salts or phenolic forms, is used for preparing an agent (II) for the prevention and/or treatment of diseases caused by increased serum interleukin-6 (IL-6) level. Hydroxystilbene-containing active substance combination (I) containing at least two compounds, resveratrol and piceatannol precursors or their derivatives, stereoisomers, salts or phenolic forms, is used for preparing an agent (II) for the prevention and/or treatment of diseases caused by increased serum interleukin-6 (IL-6) level, where their occurrence and/or progress is treated by a dose of estrogen receptor-beta agonist. Independent claims are also included for: (1) a dosage form comprising active substance or (I) in a pharmaceutically or dietically acceptable carrier; and (2) an agent comprising the dosage form. ACTIVITY : Antidepressant; Antimigraine; Antiinflammatory; Cytostatic. MECHANISM OF ACTION : Estrogen receptor beta agonist; Interleukin-6 antagonist.

Description

The The invention relates to the use of a hydroxystilbene-containing Active ingredient or a hydroxystilbene-containing active ingredient combination, selected Resveratrol and Piceatannol prodrugs, in particular Rhaponticin, Deoxyrhaponticin, cis and traps rhapontigenin, deoxyrhapontigenin and Astringin; as well as resveratrol and piceatannol; as well as stereoisomers Molds, in each case in the form of their salts or in the phenol form, or Combinations of these compounds for the preparation of an agent for the treatment of mild to moderate depression and anxiety.

BACKGROUND THE INVENTION

Out huge Clinical epidemiological research is known to be depression in women twice more often occur as in men. It was therefore hypothesized that this gendered predominance has a neurohormonal etiology. Depression represents a status change which is characterized by a depressive or irritable mood which is associated with neurovegetative symptoms and mood swings as well as with cognitive changes (Spinelli MG, Clip, Obstet, Gynecol, 2004; 47: 428-436). The initial gender relationship is also in the puberty to observe the prevalence of depression in girls twice as high as boys. Gender differences are also evident in terms of the development of anxiety. The probability of training for anxiety disorders is significantly higher for women as in men and can be observed at the age of 6 (CNS Spectr. 2004; 9: 1-16).

gonadal Hormones are the primary trigger for change the neurotransmitter in the brain, causing moodiness and other mental status changes be generated. additionally are depression and anxiety with a neuroendocrine dysregulation which is exemplified by a hyperactive hypothalamic pituitary axis becomes. changes in communication between the hypothalamic pituitary axis and The central nervous system (CNS) has influence on a monoaminergic System, which the feeling status (Spinelli MG, Clip, Obstet Gynecol, 2004; 47: 428-436).

The monoaminergic neurotransmitters of the brain, which contribute to steroid feedback include norepinephrine, dopamine and serotonin. changes These CNS substrates are the cause of moodiness, anxiety and psychotic disorders. In particular, availability represents of serotonin at the neuronal synapses is a mechanism the emotional state certainly. In patients with depression and / or anxiety is availability reduced by serotonin in the brain due to the high content monoamine oxidase (MAO) and catechol-o-methyl transferase (COMT), which are serotonin and other catecholamines.

In particular, MAO plays a crucial role in the metabolism of monoamines. It occurs in the form of two subtypes: MAO _A deaminates serotonin and norepinephrine much better than MAO _B , which prefers phenethylamine and benzylamine as substrates. MAO _A inhibitors are among the drugs used to treat depression and anxiety (Bonnet U., CNS Drug Rev. 2003; 9: 97-140).

The currently available selective MAO _A inhibitors, such as moclobemind, show several undesirable side effects, especially during long-term treatment. For example, the onset of headache, sleep disorders, drowsiness, nausea, dry mouth, epigastric discomfort, tachycardia (Bonnet U., CNS Drug Rev. 2003; 9: 97-140) and reduced compliance and efficacy may result from treatment with these agents be.

One important regulator of emotional states People is estrogen. Dependent on Age and stage of the reproductive cycle cause estrogen Depression, sleep disorders, Irritability, anxiety, panic and cognitive dysfunction. In women are decreased estrogen levels, for example during Menstruation and menopause, associated with these symptoms.

Hormone replacement therapy (HRT) in menopausal women is consistently described as improving mood swings, general well-being, and activity in general (Zarate 2002). The HRT was considered safe. However, this has not been the case since large randomized controlled trials have been conducted that show the opposite (Beral et al., Lancet 2002; 360: 942-944, Collaborative Group, Lancet 1997; 359: 1047-1059). There is evidence that HRT increases the risk of cardiovascular disease in perimenopausal and postmenopausal women (Writing Group for WHI Investigators JAMA 2002, 288: 321-333, Chlebowsky et al., JAMA 2003, 289: 3243-3253). In addition, ran by domesticated controlled trials found that HRT is associated with an increased risk of breast cancer (Million Women Study Collaborators Lancet 2003; 362: 419-427, Schairer et al JAMA 2000; 283: 485-491 Ross et al Natl Cancer Inst 2000; 92: 328-332, Colditz et al., N Engl J Med 1995; 332: 1589-1593, Magnusson et al., Int J Cancer 1999; 81: 339-344).

by virtue of refuse these results of clinical and experimental studies More and more women are applying HRT. In addition, an HRT is not indexed for the treatment of women who already had a tumor, or a high risk of cancer, in particular breast cancer and endometrial cancer, exhibit. That's why new drugs are used to treat depression and fear, for example during menstruation and menopause, which are free of potential Risks, very desirable.

Since 1993 in Germany under the name extract Rheum rhaponticum (ERR 731) (trade name Phytoestrol ^® N) a dry extract from the roots of Rheum rhaponticum for follicle hormone replacement therapy, for example, for the treatment of women with climacteric symptoms, juvenile oligomorrosis and dysmenorrhea, primary and Secondary amenorrhoea and endometritis on the market. The components of the specific ERr 731 extract are rhaponticin, deoxyrhaponticin, rhapontigenin and deoxyrhapontigenin (Table 1).

Table 1

All ingredients of ERr 731 belong to the hydroxystilbene group. Representatives of this group have the following general formula:

Several Studies have shown that the number and position of free hydroxy and methoxy groups strongly potentiate the biological activity of the hydroxystilbene (Kageura et al., Bioorganic & Medicinal Chemistry 9 (2001) 1887-1893, Matsuda et al. Biol. Pharm. Bull. 2001 (24 (3) 264-267, Roberti et al. J. Med. Chem. 2003, 46, 3546-3554). The pharmacological effect the hydroxystilbene is above beyond dependent from the presence a glucose group (Park et al., Arch. Pharm. Res. 2002, 25 (4), 528-533).

If, or to which metabolites the ingredients of ERr 731, e.g. after oral administration in the body have been mined, has been studied closely. It's just that from studies on the antithrombotic and antiallergic activity of Rhaponticin extracts from Rhei rhizoma are known to this through Bacteria of the human intestinal tract degraded to rhapontigenin (Park et al, Arch. Pharm. Res. 2002, 25 (4), 528-533). A Metabolism of Rhaponticin to Piceatannol or Desoxyrhaponticin Resveratrol has not previously been described.

Ryu et al. describe in Arch Pharm Res. 1988; 11: 230-239 resveratrol, rhapontigenin and deoxyrhapontigenin as competitive MAO _A inhibitors. Han et al describe in Arch Pharm Res. 1990; 13: 132-135 that the inhibitory effect of resveratrol and rhapontigenin is caused by their antioxidant properties.

SUMMARY THE INVENTION

Of the The present invention therefore had the object of a new Way to treat mild to moderate depression and anxiety show.

These Task was surprisingly by the use of a hydroxystilbene-containing active substance or a hydroxystilbene-containing drug combination selected from Resveratrol and Piceatannol prodrugs, in particular Rhaponticin, Deoxyrhaponticin, rhapontigenin, deoxyrhapontigenin and astringin; as well as resveratrol and piceatannol; and their stereoisomeric forms, each in the form of their salts or in the phenol form, or combinations these compounds for the preparation of an agent for treatment mild to moderate depression and anxiety resolved.

DESCRIPTION OF THE FIGURES

1 shows the formation of piceatannol and resveratrol in vivo in male and female dogs 24 hours after administration of 100mg ERr 731 / kg body weight.

2 illustrates the estrogenic activity of estradiol as compared to resveratrol, cis- and trans-rhapontigenin, deoxyrhapontigenin, piceatannol and ERr 731 in a recombinant yeast screen, stably expressing ER-α. The concentrations (X-axis) are molar concentrations with the exception of the ERr 731 concentration, expressed in μg / ml.

3 shows the result of studying the activity of various hydroxystilbenes in the ER-β-expressing endometrial cell carcinoma cell line HEC-1B. In particular, activation of ER-β by rhapontigenin is observed ( 3a ) and Piceatannol ( 3b ).

DETAILED DESCRIPTION THE INVENTION

1. Preferred objects of invention

One The first object of the invention relates to the use of a hydroxystilbene-containing Active ingredient or a hydroxystilbene-containing active ingredient combination, selected Resveratrol and Piceatannol prodrugs, in particular Rhaponticin, Deoxyrhaponticin, rhapontigenin, deoxyrhapontigenin and astringin; such as Resveratrol and piceatannol; and their stereoisomeric forms, in particular cis and trans form, in each case in the form of their salts or in the phenol form, or combinations of these compounds for the preparation of a For the treatment of mild to moderate depression and anxiety.

The Determining the severity of depression can be postulated in the art recognized standards, such as the HAMA Anxiety Scale, Beck Anxiety Inventory Scale (BAI), Beck Depression Inventory Scale (BDI-II) or the HAMD Depression Scale, respectively.

Compositions according to the invention are especially selected under medicines, e.g. Homeopathic remedies, nutritional supplements, dietetic Food or other medicinal plant preparations.

resveratrol and Piceatannol prodrugs according to the invention are in particular Substances which in vivo, e.g. in humans and / or one other mammals, such as. Dog, in Resveratrol and / or Piceatannol are convertible. These may be sugary (glycone) or sugar-free (Aglycone) natural or synthetic precursors of resveratrol or piceatannol. Typical examples of sugary precursor include rhaponticin, astringin and deoxyrhaponticin. typical examples for sugar-free precursors include rhapontigenin and deoxyrhapontigenin.

Preferably the active ingredients are essentially in the trans form. salts in particular the alkali and alkaline earth phenolates of the above compounds, having one or more free phenolic hydroxyl groups. If several hydroxyl groups are present, these can be partially or completely dissolved in the salt form.

Of the used according to the invention Active substance or the combination of active substances is chemically synthesized or in particular of natural or recombinant plants isolable.

Prefers is a drug combination of at least two of these compounds used.

In a preferred embodiment the active substance or combination of active substances is accessible from plants, the selected are under natural Plants as well as by breeding changed or recombinant, genetically modified, plants that have a higher content compared to the corresponding unaltered plant at least one of the desired Have ingredients. In particular, these plants are selected below Plant of the genus Rheum spp., Astragalus spp., Cassia spp. or Picea spp. or active ingredient-containing parts of plants. Nonlimiting examples for suitable species of these genera are Rheum undulatum, Rheum palmatum, Rheum tataricum, Rheum officinale, Rheum wittrockii, Rheum altaicum, Rheum reticulatum, Astragalus complanatus Cassia garrettiana and Picea sitchensis.

the Specialist is also be aware that genera / species of different provinces as well different ages (i.e. harvest at different times of the growing season) can be used, which in turn influences the type, quantity and composition of the isolatable active ingredients and mixtures may have. As well are different plant parts, such as roots, rhizomes, leaves and / or Stem, basically usable.

Particularly advantageous is the active ingredient or combination of active ingredients obtainable from the roots, ins special of Rheum rhaponticum.

In a further preferred embodiment includes the drug combination essentially rhaponticin and Deoxyrhaponticin, the drug combination substantially Rhaponticin and deoxyrhaponticin in a weight ratio of about 10: 1 to 1:10, e.g. in a range of about 5: 1 to 1: 5 or 4: 1 to 1: 4 or 3: 1 to 1: 3 or 2: 1 to 1: 2 or about 1: 1, may include.

A further preferred active ingredient combination may include rhaponticin and deoxyrhaponticin, especially in the proportions given above, and Rhapontigenin and / or deoxyrhapontigenin, and optionally piceatannol. The quantitative share of rhapontigenin and / or deoxyrhapontigenin in the total active substance content can over a wide range, and is e.g. in the range of about 0.01 to 20 wt .-%, in particular 0.1 to 5 wt .-%, based on the Total active substance content.

In a further preferred embodiment is used a drug combination that is substantially free is of aglycone derivatives of rhaponticin and deoxyrhaponticin, in particular resveratrol and piceatannol. "Essentially free" means an aglycone content of less than 5% by weight, in particular less than 2% by weight, such as e.g. less than 1% by weight or 0.1% by weight, such as 0 to 0.05% by weight, in each case based on the total content of rhaponticin and deoxyrhaponticin.

In a further preferred embodiment Is used as a combination of active ingredients, a dry plant extract, a high proportion of glycones, especially glycones of the above of the type described, such as e.g. a share of 30 to 100 % By weight, 50 to 100% by weight, 60 to 99% by weight or 80 to 98% by weight or 85 to 96 wt .-%, each based on the total weight of obtained dry extract. A "dry extract" in the sense of the invention especially if the residual moisture content, i. of the Residual portion of water and / or organic liquid, (such as extractant) less than about 5 weight percent, especially less than 2 weight percent, such as e.g. 0 to 1.5 wt .-% or 0.1 to 0.5 wt .-%, each based on the total weight of the dry extract obtained is.

Nonlimiting examples of a suitable combination of active ingredients comprising the active ingredients rhaponticin, deoxyrhaponticin, rhapontigenin, deoxyrhapontigenin are listed below:
60-70% by weight, such as 60-66 or 62-68% by weight, of rhaponticin
30-40 wt .-%, such as 30-36 or 31-37 wt .-%, deoxyrhaponticin
0-2% by weight of trans-Rhapontigenin and
0-2% by weight of deoxyrhapontigenin;
or
50-60 wt .-%, such as 53-58 wt .-%, Rhaponticin
20-30 wt .-%, such as 14-28 wt .-%, deoxyrhaponticin
5-20 wt .-%, such as 10-18 wt .-%, trans-Rhapontigenin and
0-10 wt%, such as 4-10 wt%, deoxyrhapontigenin;
in each case based on the total active ingredient content and in particular on the total content of rhaponticin, deoxyrhaponticin, rhapontigenin and deoxyrhapontigenin.

object The invention also relates to the use of active substances or combinations thereof as defined above, in combination with at least one others for prevention and / or treatment of prostate cancer and / or for the treatment of LUTS suitable and different from compounds as defined above Active ingredient. In particular, a combination with vitamins, Minerals, other medicinal plant preparations, food supplements and / or dietary Food possible.

object The invention is also a dosage form containing in one pharmaceutically acceptable carrier an active substance or a combination of active substances according to the above Definition.

Finally is The invention relates to an agent comprising a dosage form as defined above.

another 2 special embodiments of formulations used according to the invention

2.1 Medicines

The invention also includes the preparation of pharmaceutical agents (medicaments) for the treatment of an individual, preferably a mammal, in particular a human, animal or pet. So who the above-described active compounds or active compound combinations are usually administered in the form of pharmaceutical compositions comprising a pharmaceutically acceptable excipient with at least one active ingredient according to the invention, in particular a mixture of several active compounds according to the invention, and optionally other active ingredients. These compositions may be administered, for example, by oral, topical, rectal, transdermal, subcutaneous, intravenous, intramuscular, intraperitoneal, intracutaneous or intranasal routes.

Examples suitable pharmaceutical formulations are solid dosage forms, such as powder, powder, granules, tablets, such as coated tablets, enteric coated Tablets, coat, point and shift tablets, lozenges, chewable tablets, Lozenges, sachets, cachets, dragees, capsules such as hard and Soft gelatin capsules, globules, suppositories or vaginal dosage forms, Semi-solid dosage forms such as ointments, creams, hydrogels, pastes or Plaster, as well as liquid Dosage forms, such as solutions, Emulsions, in particular oil-in-water emulsions, Suspensions, for example lotions, injection and infusion preparations, Eye and ear drops, nose drops, nasal spray and tinctures. Implanted delivery devices may also be used to deliver inhibitors of the invention be used. Further, you can also Liposomes, microspheres or polymer matrices are used.

at The preparation of the compositions become active ingredients according to the invention or drug combinations usually mixed with an excipient or diluted. Excipients can use solid, semi-solid or liquid Be materials that act as a vehicle, carrier, adsorbent or medium for the Active ingredient or the drug combinations serve.

To suitable excipients include for example, lactose, dextrose, sucrose, sorbitol, mannitol, starches, gum acacia, Calcium phosphate, alginates, tragacanth, gelatin, calcium silicate, microcrystalline cellulose, polyvinylpyrrolidone, cellulose, cellulose derivatives, such as. Methylcellulose, water, syrups and methylcellulose. Further can the formulations pharmaceutically acceptable carriers or conventional excipients, such as lubricants, for example, talc, magnesium stearate and mineral oil; Wetting agents; emulsifying and suspending agents; conserving agents, such as Methyl and propyl hydroxybenzoates; antioxidants; Antiirritatives; chelating agents; coating aids; Emulsion stabilizers film former; gelling agents; Odor masking agents; masking flavors; resins; Hydrocolloids; Solvents; Solubilizing agents; Neutralizing agents; permeation; pigments; quaternary ammonium compounds; refatting and superfatting agents; Anoint-, Cream or oil bases; Silicone derivatives; spreading aids; stabilizers; Sterilanzien; suppository bases; Tablet excipients, such as binders, fillers, Lubricants, disintegrants or coatings; Propellant; Desiccant; Opacifiers; Thickener; waxes; plasticizers; Include white oils.

A in this regard Design is based on expert Knowledge, such as in Fiedler, H.P., Lexicon of excipients for pharmacy, Cosmetics and adjacent areas, 4th edition, Aulendorf: ECV-Editio-Kantor-Verlag, 1996, is shown; See also Hager's Handbook of Pharmaceutical Practice, Springer Publisher, Heidelberg.

In a preferred embodiment there is provided a pharmaceutical composition which is a solid dosage form includes. This solid dosage form in turn comprises a drug-containing solid core with a pharmaceutically acceptable carrier and an active ingredient content from about 1 to 20% by weight, based on the total weight of the core, wherein the hydroxystilbene-containing active ingredient or the hydroxystilbene-containing active ingredient combination, selected a connection among resveratrol and piceatannol prodrugs, such as rhaponticin, deoxyrhaponticin, Rhapontigenin, deoxyrhapontigenin and astringin; as well as resveratrol and piceatannol; and their stereoisomeric forms, each in form their salts or in the phenol form, or combinations of these compounds includes. Preferred drug combinations are as defined above.

These For example, solid dosage form has a total drug content from about 1 to 20 mg, such as. B. 2 to 10 mg, per dose unit and can be in the form of a pill, tablet, extrudate or granules present and e.g. to be coated. If you want, you can too an enteric coating exhibit.

The solid dosage form is e.g. prepared by adding the active ingredient or the combination of active ingredients with the pharmaceutically acceptable carrier mixes and solidifies the mixture to the drug core. It solves or it disperses the active ingredient or drug combination in one inert liquid, mix him / her with the bearer and remove the solvent while or after solidification. The active ingredient core can then optionally with an enteric coating provided before putting the core in the usual Way sugar coated.

kind and duration of administration of the medicaments of the invention are the Decision of the attending physician. This can be dependent of the chosen Route of administration, of the effectiveness of the specific active ingredient composition, the nature and severity of the disease to be treated, the condition the patient and his response to the therapy a suitable Set dose and a corresponding dosing schedule. For example For example, a suitable single dose may be about 0.1 to 50 mg, e.g. 2 to 12 mg, active substance or combination of active substances as defined above and 1 to 3 times a day be administered until the desired Treatment success is observed.

2.2 Dietary supplements and food

To the agents according to the invention belong especially dietary supplements and food, especially functional or dietetic Food. The foods according to the invention In addition to a predominantly nutrition-related function, they also have one active ingredient-related function, which in particular the active ingredient combination according to the invention concerns. They are therefore considered functional or dietary Food or food called. Dietary supplements serve as a supplement the daily nutrition with the active ingredient combination according to the invention, being the nutritional Function of the dietary supplement for themselves Taken into the background.

The Formulation basis for Dietary supplements according to the invention and food also includes physiologically acceptable excipients in the broadest sense, such as above-mentioned excipients. excipients in the sense of the invention can also a nutritional value and therefore commonly used as a nutritional component become. Also nutrients, especially essential nutrients, can this includes.

food components usually contain one or more amino acids, carbohydrates or fats and are for the human and / or animal diet is ge. They include Single components, common vegetable and also animal products, in particular sugar, if appropriate in the form of syrups, fruit preparations, such as fruit juices, nectar, Fruit pulps, purees or dried fruits, for example, apple juice, grapefruit juice, orange juice, applesauce, Tomato sauce, tomato juice, tomato puree; Cereal products, like Wheat flour, Rye flour, Oatmeal, Corn flour, Barley flour, Spelled flour, Corn syrup, as well as starches the said cereals; Dairy products, such as milk protein, whey, Yogurt, lecithin and lactose.

Examples essential nutrients are especially vitamins, provitamins, minerals, trace elements, amino acids and fatty acids. As essential amino acids may be mentioned isoleucine, leucine, lysine, methionine, phenylalanine, Threonine, tryptophan and valine. These include semi-essential amino acids, for example must be supplied in growth phases or deficiencies, such as Arginine, histidine, cysteine and tyrosine. As trace elements are called: essential trace elements and minerals, such as: iron, Copper, zinc, chromium, selenium, calcium, magnesium, sodium, potassium, Manganese, cobalt, molybdenum, Iodine, silicon, fluorine, chlorine, phosphorus, tin, nickel, vanadium, arsenic, Lithium, lead, boron. As for humans essential fatty acids may be mentioned: linoleic acid and linolenic acid, ARA (arachidonic acid) and DHA (docosahexaenoic acid) for infants and possibly EPA (eicosapentaenoic acid) and DHA too for Adults. A comprehensive list of vitamins can be found in "reference values for the Nutrient Supply ", 1st Edition, Umschau Braus Verlag, Frankfurt am Main, 2000, edited by the Germans Organisation for; society for; party for Nutrition.

Examples suitable formulations for supplementation are capsules, tablets, Pills, powder bags, liquid ampoules and vials with drip inserts, as well as the dosage forms already mentioned above.

Food formulations usually have the usual Form and are used, for example, as breakfast preparations, in the form of cereals or bars, sports drinks, complete meals, dietetic preparations, like diet drinks, diet meals and diet bars, offered.

The Production of dietary supplements according to the invention and food is carried out according to methods familiar to the person skilled in the art and requires no further explanation. (See, for example, Hans-Dieter Belitz et al., Textbook of Food Chemistry. Springer Series 5th, revised. Edition 2001. XLIV, 1059 Publisher: SPRINGER, BERLIN)

Of the Content of inventive drugs / drug combinations in above dietary supplements and food can be over vary a wide range and is z. B in a range of 0.01 to 10% by weight, e.g. 0.1 to 1 wt .-%.

The Invention will now be described by the following nonlimiting examples and further explained with reference to accompanying figures.

EXPERIMENTAL PART

General methods:

Determination of stilbenes by high pressure liquid chromatography (HPLC) in dry extract from rhapontic rhubarb root

a) Sample preparation:

50 mg extract are mixed with 40 ml of a mixture of acetone and water (1: 1) in a brown glass vessel, Treated for 15 minutes in an ultrasonic bath and with the solvent mixture made up to 50 ml and subsequently 1:10 with the solvent mixture diluted.

b) implementation of the chromatography:

Part of the solution obtained above is subjected to high pressure liquid chromatography (HPLC) with the following system parameters: Sample loop: 2Oμl Pillar: Lichrospher 5 μ RP 18, 250 × 4 mm Guard column: Lichrospher 5 μ RP 18, 5 × 4 mm Column temperature: 25 ° C Plasticizer A: Acetonitrile / least. Water / phosphoric acid 85%, 15/85 / 0.05 (parts by volume) Plasticizer B: Acetonitrile / least. Water / phosphoric acid 85% 80/20 / 0.05 (parts by volume) River: 1.5 ml / min Column flush: 15 min with eluent 50% B; Equilibration time 15 min detection: 310 nm HPLC: Kontron Kroma 2000

Gradient: Time % B 0.0 0 0.5 0 7.5 75 8.5 100 9.5 0 12.5 0

Under the system conditions given above, the following retention times result: rhaponticin: approx. 5,5 min deoxyrhaponticin: about 6,8 min rhapontigenin: approx. 7.2 min deoxyrhapontigenin: approx. 9.0 min

For a quantitative Determining the respective peak areas are determined and with the corresponding peak areas of a standard extract of known composition.

Production Example 1 Production of the dry extract ERr 731 from rhapontic rhubarb root with an aqueous Calcium hydroxide solution

For the preparation of a dry extract of rhapontic rhubarb root are used: Drug (Radix rheumrhaponticum) 50.0 kg calcium oxide 5.0 kg Purified water 190.0 kg

Acetic acid (ever as required to adjust the required pH value)

The achievable yield is between 2 and 3 kg per 50 kg of drug.

• a) In einen Plastikbottich werden zunächst 5 kg Calciumoxid gefüllt und mit 20 kg gereinigtem Wasser aufgeschlämmt. Die unter diesen Bedingungen stattfindende Bildung von Calciumhydroxid (Löschkalk) führt zu einem starken Temperaturanstieg der Lösung. Daher kann das Calciumhydroxid erst nach Abkühlen weiter verwendet werden. Die Temperatur der Lösung liegt dann bei 30°C bis 35°C.
• b) 50 kg Droge werden in einen Mischer gefüllt und mit dem oben erwähnten Löschkalk versetzt. Um den Löschkalk möglichst vollständig aus dem Plastikbottich zu entfernen, wird dieser mit 10 kg gereinigtem Wasser nachgespült. Diese Waschflüssigkeit wird ebenfalls in den Mischer gegeben.
• c) Die mit Löschkalk homogen durchmischte Droge wird in einen Perkolator gefüllt und mit 160 kg gereinigtem Wasser überschichtet. Der Perkolator bleibt für 48 Stunden verschlossen. Anschließend wird das Perkolat in einem geeigneten Gefäß mit einer Flussrate von 50ml/min aufgefangen. Die Perkolation wird solange fortgesetzt, bis kein Perkolat mehr austritt. Die Drogenmasse wird nach Beendigung nicht ausgepresst, sondern verworfen.
• d) Unter permanenter Kontrolle wird dem Perkolat solange konzentrierte Essigsäure zugefügt, bis ein pH-Wert erreicht ist, der im Bereich von 3,4 bis 3,6 liegt. Um eine möglichst vollständige Fällung des Extraktes zu erreichen, ruht der Ansatz für 5 Tage.
• e) Die Gewinnung des Trockenextraktes erfolgt durch Filtration über Büchnertrichter unter angelegtem Vakuum. Abschließend wird der Extrakt noch mit 10 bis 20 kg gereinigtem Wasser gewaschen.
• f) Der nach Filtration erhaltene Trockenextrakt wird im Trockenschrank bei 40°C solange getrocknet, bis eine Restfeuchte-Toleranz von max. 1 % erreicht ist.

The production takes place in the following steps:

• a) 5 kg of calcium oxide are first filled into a plastic tub and slurried with 20 kg of purified water. The formation of calcium hydroxide (slaked lime) taking place under these conditions leads to a strong increase in the temperature of the solution. Therefore, the calcium hydroxide can be used only after cooling. The temperature of the solution is then at 30 ° C to 35 ° C.
• b) 50 kg of drug are filled into a mixer and mixed with the above-mentioned slaked lime. To remove the slaked lime as completely as possible from the plastic tub, this is rinsed with 10 kg of purified water. This washing liquid is also added to the mixer.
• c) The homogeneously mixed with slaked lime drug is placed in a percolator and covered with 160 kg of purified water. The percolator remains closed for 48 hours. Subsequently, the percolate is collected in a suitable vessel at a flow rate of 50 ml / min. The percolation is continued until no more percolate escapes. The drug mass is not squeezed out after termination, but discarded.
• d) Concentrated acetic acid is added to the percolate under permanent control until a pH in the range of 3.4 to 3.6 is reached. In order to achieve the most complete precipitation of the extract, the batch rests for 5 days.
• e) The extraction of the dry extract is carried out by filtration through Büchner funnel under applied vacuum. Finally, the extract is washed with 10 to 20 kg of purified water.
• f) The dry extract obtained after filtration is dried in a drying oven at 40 ° C until a residual moisture tolerance of max. 1% is reached.

rhaponticin is in watery solutions highly soluble with alkaline pH range, while it precipitates in the acidic pH range (pH 3.4-3.6) as a yellowish substance. This you make use of its isolation. Because the root next to other organic acids especially has a high content of oxalic acid (2/3 in water-soluble and 1/3 in bound form) must be neutralized during isolation be used to prevent drift of the pH in the acidic range and so early Failure of Rhaponticins to prevent. This is through the use reached by calcium oxide. This is called slaked lime solution with a pH of 12.4 - 12.6 used.

Becomes the slaked lime mixed homogeneously with the drug, the pH of the mixture changes. He then lies in the range of 11.3 to 11.8, causing a failure of Rhaponticin is prevented because the phenolic form has been converted into a phenolate form. Despite the high content of oxalic acid the pH can be kept in the alkaline range. This is due to that the calcium hydroxide with oxalic acid reacts and insoluble and forms non-toxic calcium oxalate.

By the subsequent one Percolation with purified water will make Rhaponticin out of the root extracted. After completion of the percolation is by addition of acetic acid a pH of 3.4 to 3.6 is set. This pH-shift from the alkaline leads into the acidic area to fail of Rhaponticin by recycling in the phenolic form. To one as possible full precipitation to reach the Rhaponticins, one lets stand the approach 5 days. Thereafter, it is filtered off. Rhaponticin remains as a yellowish substance on the filter back.

Production Example 2 Preparation of a dry extract of rhapontic rhubarb root with different organic solvents

In The rhapontic rhubarb root used here as a drug include the mainly detectable ingredients to the hydroxystilbene group. From this Group are found in the roots Rhaponticin (Rh) with a share of about 6% and deoxyrhaponticin (DRh) at a level of about 4%.

When exposed to the following solvent systems in 100-fold amount, at room temperature for 10 minutes with shaking or stirring, the following summarized Extract ten parts: Ethanol 86% Rh 100.8% DRh 99.5% Ethanol 15% Rh 77.1% DRh 75.5% acetone Rh 88.3% DRh 96.6% Water, alkaline (pH 11, adjusted with CaO solution) Rh 75.5% DRh 60.5%

None useful results were achieved with heptane.

The respective yields of crude extracts in mass fractions (based on the drug used) are the following: Ethanol 86% 35.5% Ethanol 15% 32.2% acetone 21.4% heptane 0% Water, alkaline 4.5%

The Extraction of rhapontic rhubarb root with ethanol-water mixtures leads to an extract containing, apart from the main ingredients rhaponticin (ca. 30%) and deoxyrhaponticin (about 22%), another z. yet unexplored stilbene contains about 20% of the extract. Besides receives the aglycones rhapontigenin (about 8%) and deoxyrhapontigenin (about 2%) and 9 other compounds, which are about 20% sum up.

at the extraction with acetone basically same results.

The Extraction with alkalized water (see conditions according to Preparation Example 1) leads to an extract higher Purity.

The Main ingredients rhaponticin and deoxyrhaponticin are in one about 97% content contained in the dry extract. rhapontigenin and deoxyrhapontigenin together in the extract 1.1% while the not yet explored stilbene only in a proportion of 0.2% is included. Another 3 compounds are in a 2.5% Share included.

formulation example 1: Preparation of a solid dosage form - mini-tablet

1. Preparation of the tablet core:

A solid tablet core is prepared using the following active ingredients and auxiliaries in the proportions indicated (TI = parts by weight). The ingredients are mixed and tableted in two different ways: Purified dry extract according to production example 1 from rhapontic rhubarb root (ERr 731) 3.6 TI Microcrystalline cellulose (eg Avicel ^®) 57.0 TI (± 40%) sorbitol 8.0 TI (± 40%) talc 2.5 TI (± 40%) Makrogol 6000 (polyglycol) 1.6 TI (± 40%) Povidone (K value of about 25, eg Kollidon ^® 25) 1.6 TI (± 40%) Sodium dodecyl sulfate (for example Texapon ^® K 12) 0.5 TI (± 40%) Magnesium stearate (vegetable) 0.8 TI (± 40%) 75.6 TI (± 40%)

By Variation of the weighed amount of ERr 731 and / or variation of the microcrystalline cellulose amount can be any ERr 731 levels of the crude core (such as 2, 4, 6, 8, 10, 12 mg per tablet).

Mixture variant a:

1.2 TI ERr 731 are proportionately triturated with Avicel ^®, then is mixed and tableted.

Mixture variant b:

ERr 731 (1g / l solvent) is dissolved in a suitable solvent (eg ethanol / water mixture 86% v / v ethanol) and mounted on Avicel ^®, dried (at 40 ° C for at least 48 hours), mixed and then tableted.

tableting:

The Mixture is passed through a screening machine (sieve diameter 1.2 mm) in a suitable mixing container sieved and in a suitable mixer (for example, Rhönrad mixer type standard RR M 200, company Engelsmann AG / Ludwigshafen) for at least 30 minutes. After adding Magnesium stearate is mixed again for at least 5 minutes.

The pressing takes place on a suitable tablet press (eg rotary type Perfecta Fette 2000, Fa. Fette / Schwarzenbeck): Weight of core: 84 mg ± 4.2 mg maximum deviation Stamp: 7 mm diameter, drageegewölbt

Of the ERr-731 content per core is about 4 mg.

2. Preparation of the enteric coated tablet

To the dedusting of the tablet cores becomes an enteric coating Cellulose acetate phthalate and diethyl phthalate dissolved in isopropanol and ethyl acetate, applied to the tablet cores with the aid of a coating system.

Macrogol is dissolved in purified water. The constituents sugar (sucrose or isomalt), calcium carbonate, Talcum, titanium dioxide and the two povidone are mixed and into the liquid stirred. The suspension is stirred for 2 hours in a stirred tank.

The Drier suspension is using the help of a panning on the Applied isolated cores. The process is repeated for as long as until an average weight of 150 mg per booster Core is reached. After all you wear the polishing wax on and then allowed to roll to high gloss.

Final weight of the enteric coated tablet:
150 mg t 7.5 mg maximum deviation.

In this way, two different tablet forms - a sugar-containing and a sugar-free - produced, with the respective excipients were used in the following parts by weight. Enteric coated tablet - sugary Excipients: Eudragit dry substance 1,350 kg (± 40%) diethyl phthalate 1.749 kg (± 40%) cellulose acetate phthalate 7,770 kg (± 40%) isopropyl alcohol 75,600 kg (± 40%) ethyl acetate 77,600 kg (± 40%) talc 7.482 kg (± 40%) sugar 28.747 kg (± 40%) calcium carbonate 6.410 kg (± 40%) Titanium dioxide E 171 0.635 kg (± 40%) povidone (K value of about 25, eg Kollidon ^® 25) 0.756 kg (± 40%) Povidone (K value: approx. 90) 0,332 kg (± 40%) Macrogol 35,000 0.635 kg (± 40%) water 10,500 kg (± 40%) 95% carnauba wax, 5% bleached wax (eg Capol 1295 PH) 0.108 kg (± 40%) Enteric coated tablet - sugar free Excipients: Eudragit dry substance 1,350 kg (± 40%) diethyl phthalate 1.749 kg (± 40%) cellulose acetate phthalate 7,770 kg (± 40%) isopropyl alcohol 75,600 kg (± 40%) ethyl acetate 77,600 kg (± 40%) talc 7.482 kg (± 40%) Sorbitol and / or isomalt 28.747 kg (± 40%) calcium carbonate 6.410 kg (± 40%) Titanium dioxide E 171 0.635 kg (± 40%) Povidone (K value of about 25, eg Kollidon ^® 25) 0.756 kg (± 40%) Povidone (K value: approx. 90) 0,332 kg (± 40%) Macrogol 35,000 0.635 kg (± 40%) water 10,500 kg (± 40%) 95% carnauba wax, 5% bleached wax (eg Capol 1295 PH) 0.108 kg (± 40%)

formulation example 2: Preparation of a solid dosage form - enteric coated tablet

Based on the following general formulations, according to Formulation Example 1, tablets are made with a final weight of about 400 mg, a core weight of about 250 mg, and an active ingredient content of 4 mg per coated tablet. Tablet core: Rhapontic rhubarb root dry extract according to Preparation Example 1 1.2 kg Microcrystalline cellulose between 19.0 and 50.0 kg Lactose monohydrate between 21.0 and 55.0 kg talc between 1.0 and 4.0 kg Povidone (K value approx. 25) between 0.5 and 2.0 kg Macrogol 6000 between 0.4 and 1.9 kg magnesium stearate between 0.3 and 1.2 kg sodium between 0.1 and 1.2 kg average total weight of the batch 75.0 kg Tablet coat: sucrose 26.52 kg ± 40% calcium carbonate 6,36 kg ± 40% talc 5.28 kg ± 40% cellulose acetate phthalate 3.18 ± 40% Povidone (K value approx. 25) 0.75 kg ± 40% Titanium dioxide E 171 0.63 kg ± 40% Macrogol 3500 0.63 kg ± 40% diethyl phthalate 0,72 kg ± 40% Methacrylic acid-methyl methacrylate copolymer (1: 1) 0.51 kg ± 40% (Eudragit L) 12.5% povidone (K value about 90) 0.33 kg ± 40% Capol 1295 (95% carnauba wax, 5% bleached wax) 0.09 kg ± 40% Final weight enteric coated tablet (300,000 pieces) 120.00 kg

Test Example 1: In vivo Metabolization of the dry extract ERr 731

To further elucidate the mode of action, ERr 731 was administered orally per capsule to 3 male and 3 female dogs (purebred beagle, weight 6-9 kg, ages 6-8 months) at a dose of 100 mg ERR 731 / kg bw. After various times, the animals were bled and blood plasma collected. Plasma was assayed for ERr 731 ingredients and metabolites. Surprisingly, significant amounts of the metabolite piceatannol and small amounts of the metabolite resveratrol could be detected in both male and female animals. Maximum plasma levels of these metabolites were reached after approximately 24 h. Plasma levels of piceatannol were significantly higher than those of resveratrol. The test results are in 1 shown.

Test Example 2: Estrogens activity of ERr 731 and its metabolites in an ER-α-expressing yeast cell system

It the question should be clarified whether ERr 731 activates ER-α. Therefore, the extract ERr 731 and its ingredients or Metabolites (Rhapontigenin (trans-Rhapontigenin), Deoxyrhapontigenin, resveratrol, piceatannol and cis-rhapontigenin) Comparison with estradiol on the estrogens activity investigated in established model systems.

table 2 represents the concentrations for the positive control (estradiol) and the test substances used in the assay.

Table 2

• ¹ Exception: The concentration for the extract ERr 731 is given in μg / ml

In These experiments used a recombinant yeast screen (See E, Routlege and J. P. Sumpter, Estrogenic activity of surfactants and some of their degradation products are assessed using a recombinant yeast screen, Envirom. Tox. Chem.1996).

Saccharomyces cerevisiae cells were treated with human ER-α as well with a reporter gene, consisting of the respective responsive Promoter element fused with the LacZ gene, which is responsible for β-galactosidase coded, stably transfected. By estrogen treatment (with estrogen or an estrogen-like effect Substrate) of the cells mediated by the estrogen receptor, β-galactosidase activated, causing a red color the yeast cells leads, which can be measured at 565 nm.

The test results are in 2 summarized.

Test Example 3: Estrogens activity of ERr 731 and its metabolite in the ER-β-expressing endometrial Adenocarcinoma cell line HEC-1B

HEC-1B Express cells, a human endometrial adenocarcinoma cell line neither ER-α nor ER-β. To put it she a possibility ligand-dependent effects in a human and endometrial context of substances on the transactivation mechanisms various receptor subtypes and various estrogen-responsive To investigate promoters.

An established ER-β / mC3 luciferase system was used. For this purpose, HEC-1B cells were applied in 24-well plates with a density of 95,000 cells / well. The next day they were cotransfected with an ER-Q containing construct (hERβ / pSG2) and a triple ERE-containing promoter / luciferase construct (mC3-Luc / pGL2). Transient transfection was performed using DOTAP ^® (Roth). After 24 hours, the cells were treated with appropriate concentrations of the substances or substance mixtures to be investigated. As a positive control estradiol (10 nM), as a solvent control, a comparable volume of dimethyl sulfoxide (DMSO) was used. The incubation period was 24 hours.

Thereafter, the cells were lysed. A hand, by means of the Luciferase Assay ^® kit (Promega), the luciferase activity and on the other hand determined by the BCA ^® kit (Sigma), the protein content. The resulting specific luciferase activities of the substances to be tested could then be compared against the DMSO control (100%).

The results for trans-Rhapontigenin and Piceatannol are in 3a , b shown.

Claims (16)

Use of a hydroxystilbene-containing active ingredient or a hydroxystilbene-containing drug combination selected from Resveratrol and piceatannol prodrugs; as well as resveratrol and piceatannol; and their stereoisomeric forms, in each case in the form of their salts or in the phenol form, or combinations of these compounds for preparation a remedy for the treatment of mild to moderate depression and anxiety. Use according to claim 1, wherein the treatment mild to moderate depression and anxiety female menopausal or non-menopausal patients or male Patients done. Use according to one of the preceding claims, wherein an active ingredient combination of at least two of these compounds is used. Use according to one of the preceding claims, wherein the active substance or combination of active ingredients is chemically synthesized or isolatable from plants. Use according to one of the preceding claims, wherein the active substance or combination of active substances is obtainable from plants of the Genus Rheum spp, Astragalus spp, Cassia sp or Picea spp. Use according to one of the preceding claims, wherein the active substance or the combination of active substances nation is available from roots of Rheum rhaponticum. Use according to any one of claims 1 to 6, wherein the active ingredient or the drug combination substantially rhaponticin and / or Includes deoxyrhaponticin. Use according to claim 7, wherein the active ingredient combination essentially rhaponticin and deoxyrhaponticin in a weight ratio of about 10: 1 to 1:10. Use according to any one of claims 1 to 7, wherein the active ingredient combination Rhaponticin, deoxyrhaponticin and rhapontigenin and / or deoxyrhapontigenin includes. Use according to one of the preceding claims, wherein the drug combination is substantially free of aglycone derivatives of rhaponticin and deoxyrhaponticin Use according to claim 10, wherein the active ingredient combination is substantially free of resveratrol and piceatannol. Use according to any one of claims 1 to 11, wherein the active ingredient combination essentially from about 60-70% by weight rhaponticin 30-40 Wt .-% deoxyrhaponticin 0-2% by weight of trans-Rhapontigenin; 0-2 % By weight of deoxyrhapontigenin consists. Use according to one of the preceding claims, in Combination with at least one other for the prevention and treatment of mild suitable for moderate depression and anxiety and of compounds according to the definition in claim 1 different active ingredient. Use according to one of the preceding claims, wherein the agent selected is under chemical synthetic, biotechnologically manufactured, herbal and homeopathic Medicines, other medicinal preparations, nutritional supplements and dietary Food. Dosage form containing in a pharmaceutical or dietary acceptable carrier an active substance or a combination of active substances as defined in one of the claims 1 to 13. An agent comprising a dosage form as defined in claim 15.