IE901017L - Use of mixed micelles - Google Patents

Use of mixed micelles

Info

Publication number
IE901017L
IE901017L IE901017A IE101790A IE901017L IE 901017 L IE901017 L IE 901017L IE 901017 A IE901017 A IE 901017A IE 101790 A IE101790 A IE 101790A IE 901017 L IE901017 L IE 901017L
Authority
IE
Ireland
Prior art keywords
water
active substances
mixed
use according
octanol
Prior art date
Application number
IE901017A
Other versions
IE64191B1 (en
Inventor
Wayne Hein
Andreas Supersaxo
Hans Steffen
Original Assignee
James Andrew Marcelin
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by James Andrew Marcelin filed Critical James Andrew Marcelin
Publication of IE901017L publication Critical patent/IE901017L/en
Publication of IE64191B1 publication Critical patent/IE64191B1/en

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00Medicinal preparations characterised by special physical form
    • A61K9/10Dispersions; Emulsions
    • A61K9/107Emulsions ; Emulsion preconcentrates; Micelles
    • A61K9/1075Microemulsions or submicron emulsions; Preconcentrates or solids thereof; Micelles, e.g. made of phospholipids or block copolymers
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00Medicinal preparations characterised by special physical form
    • A61K9/10Dispersions; Emulsions
    • A61K9/127Liposomes

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  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Dispersion Chemistry (AREA)
  • Medicinal Chemistry (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Epidemiology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Biophysics (AREA)
  • Molecular Biology (AREA)
  • Medicinal Preparation (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Medicines Containing Plant Substances (AREA)
  • Cosmetics (AREA)
  • Seal Device For Vehicle (AREA)
  • Steroid Compounds (AREA)

Abstract

Mixed micelles can be used as carriers for the parenteral administration of low molecular weight active substances.

Description

641 91 1 The present invention is concerned with the use of mixed micelles as carriers for the parenteral administration of pharma-ceutically active substances as well as mixed micelle solutions which contain certain active substances.
It is known to use mixed micelles as a vehicle for pharmaceutical^ active substances. DE-PS 27 30 570 describes mixed micelle solutions for the parenteral administration of fat-soluble active substances, i.e. active substances which are not soluble in water or which are difficultly soluble in water, especially benzodiazepines and vitamin K. EP-A2-133 258 describes mixed micelle solutions for the parenteral administration of vitamin E. Furthermore, mixed micelles have been proposed for the production of aqueous protein solutions (EP-A1-252004). In the use of mixed micelles for the solubilization of non-steroidal antiinflammatories in accordance with EP-A1-280 887 the problem lay in improving the tolerance of the active substances in the case of injections.
In the case of parenteral, especially interstitial, e.g. intramuscular, subcutaneous or intradermal, administration of pharmaceutical^ active substances, those having a molecular weight <1000 can be taken up lymphatically, while active substances whose molecular weight amounts to about 16 000 or above are taken up to a substantial extent from the lymphatic system.
It can, however, be desirable also to introduce low-molecular active substances, which are normally not transported to a substantial extent by the lymphatic system, into this and thus to transport them to their destination. This is especially true in the case of active substances which influence the immune system, such as immunosupressants and immunostimulants. It has surprisingly been found that mixed micelles are transformed in the case of interstitial applications into liposomes which are taken up and transported by the lymphatic system. Under certain conditions, 2 active substances contained in mixed micelles are taken up by the liposomes formed in the organism. Whether in each case such conditions are met can be ascertained experimentally by determining the distribution coefficient of the active substance in octanol/water. Active substances whose distribution coefficient in the system octanol/water is greater than about 104, preferably greater than about 106, fulfil the condition, i.e. are taken up by the liposomes which are formed.
Fat-soluble vitamins, e.g. vitamins A, E and K, have a distribution coefficient of >106 in octanol/water. As mentioned above, mixed micelle solutions of such vitamins have become known. However, it has not become known that these vitamins, after parenteral, especially interstitial, administration as mixed micelle solutions, pass into the lymphatic vessels in the form of liposomes.
The object of the invention is accordingly the use of mixed micelles as active substance carriers for the manufacture of parenterally administerable therapeutic compositions of low-molecular active substances having a distribution coefficient in octanol/water of greater than about 104, with fat-soluble vitamins being excluded.
As low-molecular active substances there are to be understood in the present connnection active substances having a molecular weight below 10 000. The low-molecular active substances preferably have a molecular weight below 5000.
Examples of active substances in the case of whose parenteral, especially interstitial, therapeutic administration the use in accordance with the invention of mixed micelles as carriers comes into consideration are immunomodulators, e.g. immunosuppressants such as (all-E)-3,7-dimethyl-9-(2-trifluoromethyl)-6-(nonyloxy)phenyl-2,4,6,8-nonatetraenoic acid and related compounds which are described in EP-A1 -169 571; cyclosporin or FK 506 (Immunology Today 1Q., 6-9 (1989)); as well as lipophilic derivatives thereof, e.g. Ci-20-a'kanoyloxy derivatives; immuno- 3 stimulants such as N-acetylmuramyl-L-alanyl-D-isoglutamyl-L-alanyl-2-(1 ',2'-dipalmitoyl)phosphatidyl-ethanolamine (Cancer Immunol. Immunother. (1986) 22: 191-196); peptide and oligosaccharide antigens or lipophilic derivatives thereof, e.g. peptide-fatty acid ester conjugates (EP-A2-290 246); contrast agents for 5 lymphatic scintillography; cytostatics, e.g. cis-Pt complexes such i as cis-bis-N-decylaminodiacetato-1,2-diaminocyclohexane- platinum; or anthracyclines such as doxorubicin or methotrexate or lipophilic derivatives thereof such as the fatty acid esters mentioned above, or lipophilic derivatives of 5-f!uoro-2'-deoxy-10 uridine, e.g. palmitoate (Microencapsulation 1988, Vol.5, No. 1, p. 1-11) and phosphate (Japan. Kokai 1091 195); lipophilic derivatives of 1-(3-D-arabinofuranosyl-cytosine (Ara-C) such as oleate and palmitate (Int. J. Cancer 37, 149-154 id="p-1986" id="p-1986" id="p-1986" id="p-1986" id="p-1986" id="p-1986" id="p-1986"
[1986]) and cholesteryloxycarbonylglycyl-Ara-C (Chem. Pharm. Bull Vol. 36 15 (1988) 4060 et seq.); phosphatidylinositol and lysophospholipids (DE-OS 3008082); and anti-infectives such as amphotericin B, nystatin, gentamycin, chloroquin, penicillins such as ampicillin; and tetracyclines or lipophilic derivatives thereof such as the fatty acid esters mentioned above. 20 The previously named active substances can be incorporated in mixed micelles using technologies known per se, for example as described in DE-PS 27 30 570. In comparison to liposomal solutions, mixed micelle solutions are simpler to manufacture and 25 have an improved stability. The mixed micelle solutions manu-facturable in accordance with the invention therefore combine the advantage of the stability of mixed micelle solutions with the improved efficacy of lymphatically- and/or liposomically-applied active substance solutions. 30 In the scope of the present invention there are to be understood under mixed micelles or mixed micelle solutions aqueous, homogeneous solutions of cholanic acid derivatives, especially 35 alkali salts thereof and lipids. Examples of cholanic acid salts are Na cholate, glycocholate, taurocholate, deoxycholate, glyco- and taurodeoxycholate, chenodeoxycholate; and glyco- and taurocheno-deoxycholate. Examples of lipids are natural, semi-synthetic and wholly-synthetic lipids, especially phosphatidylcholines, glycerol ether phosphatides, phosphatidylethanolamine, phosphatidylin-ositol, phosphatidylserine, sphingomyelin, plasmalogens, cardio-lipin, sulphatides and monoglycerides. The mixed micelles can contain as additional components cholesterol (up to about 30 mol% based on the amount of lipid) and lipids having negatively- or positively-loaded groups such as phosphatidic acids or stearyl-amine (up to about 10 mol% based on the amount of lipid).
The mixed micelle solutions can be manufactured by simply mixing together the individual ingredients. It is, however, advantageous to dissolve the lipid ingredient, the micelle former and the active substance(s), which is/are difficultly soluble in water or insoluble in water, in an organic solvent, then to evaporate the organic solvent and thereupon to add the water, the isotonizing additives and, if desired, the additional ingredients, whereby as a rule the isotonizing additives and for the most part also the optional additional ingredients are mixed with the water prior to the addition to the mentioned evaporation residue. As organic solvents there come into consideration those in which the components to be solubilized are sufficiently soluble, such as e.g. lower alkanols, especially ethanol.
An especially preferred procedure comprises stirring intensively approximately one molar part of micelle former, approximately one molar part of lipid ingredient and approximately 0.3 to one molar part of water, optionally in the presence of up to 2% of an organic solvent such as ethanol, as well as the active substance(s) which is/are difficultly soluble in water or insoluble in water until the mixture appears homogeneous, whereupon the water, the isotonizing additives and, if desired, the additional ingredients are added until the desired dilution or concentration has been achieved. It is however, also possible to carry out the above procedure without the active substance and only at the end to solubilize the active substance(s) in the micelle solution.
The ratio between the lipid ingredient and the micelle former lies in the order of 0.1:1 to 2:1. Mixture ratios of 0.1:1 to 0.8:1 and 1.5:1 to 2:1 are preferred. The mixture ratio 0.8:1 to 1.5:1 is quite especially preferred.
The amount of lipid ingredient plus micelle former in the injection solution can vary over wide limits and can amount to e.g. 2-200 mg/ml of injection solution.
The amount of the pharmacon in the mixed micelle solution can also vary over wide limits and can amount to e.g. 0.1-100 mg/ml of injection solution.
Antioxidants such as tocopherols, ascorbic palmitate, sodium ascorbate, sodium hydrogen sulphite, sodium pyrosulphite or sodium sulphite can be added to prevent oxidation reactions of the active substance and of the carrier material.
Additional adjuvants for pH adjustment, e.g. phosphate, citrate or Tris buffer; for isotonization, e.g. sodium chloride, mannitol, sorbitol or glucose, and for preservation, e.g. methyl and propyl p-hydroxybenzoate, benzyl alcohol or phenol, can also be added.
Where desired, the mixed micelle solutions can be converted into dry preparations with the aid of conventional lyophilization procedures.
The following Examples are intended to illustrate the invention further.
Example 1 Manufacture of mixed micelle solutions: Active substance (all-E)-3,7-dimethyl-9-(2-trifluoromethyl)-6-(nonyloxy)phenyl-2,4,6,8-nonatetraenoic acid (A) 6 30.8 mg of soya lecithin (Epikuron 200, Lucas Meyer, Hamburg, Germany), 21.40mg of sodium glycocholate and 0.4 mg of (all-E)-3,7-dimethyl-9-(2-trifluoromethyl)-6-(nonyloxy)-phenyl-2,4,6,8-nonatetraenoic acid are dissolved in 5 ml of chloroform/methanol (1:1, vol/vol%) in a round flask. The film which results after evaporation of the organic solvent (rotary evaporator, 40°C) is dispersed in 1 ml of 3.8% mannitol solution (wt/vol%). The micelles obtained are adjusted to pH 6.0 ± 0.1 with 1N HCI, sterilized, filled into vials and lyophilized. The mixed micelles are manufactured with the exclusion of light and in an inert gas atmosphere, e.g. under nitrogen, in order to prevent isomerization reactions of the active substance as well as oxidation reactions of the active substance and of the carrier materials, especially of the phospholipids.
Example 2 Active substance 3\5'-di-0-palmitoyl-5-fluoro-2'-deoxuridine (B) 30.8 g of soya lecithin (Epikuron 200, Lucas Meyer, Hamburg, Germany), 21.67 mg of sodium glycocholate and 1.0 mg of 3',5'-di-0-palmitoyl-5-fluoro-2'-deoxyuridine are dissolved in 5 ml of chloroform/methanol (1:1, vol/vol%) in a round flask. The film which results after evaporation of the organic solvent (rotary evaporator, 40°C) is dispersed in 1 ml of 3.8% mannitol solution. The micelles obtained are adjusted to pH 6.0 ±0.1 with 1N HCI, sterilized and filled into ampoules. The manufacture of the micelles is carried out in an inert gas atmosphere, e.g. under nitrogen, in order to prevent oxidation reactions of the active substance and of the carrier materials, especially of the phospholipids.
The mixed micelle solutions were administered intradermal^ to the right hind leg of experimental animals (sheep) by means of a device described in EP-A-272530. Blood was removed through a jugular vein catheter and lymphatic fluid was removed through a cannula in the branching lymph vessel at the right popliteal lymph node (Pharm. Res. Vol. 5, 472-476 (1988)). 20 25 30 7 Figure 1 shows the amount of the administered dosage found in the lymph. For comparison there are quoted the values which were obtained with two low-molecular active substances whose distribution coefficient is <104. * 5 Figure 2 shows the amounts of active substance A found in the lymph after administration in mixed micelles and as an oily formulation. 8

Claims (9)

Claims
1. The use of mixed micelles as active substance carriers for the manufacture of parenterally administerable therapeutic compositions of low-molecular active substances having a distribution coefficient in octanol/water of greater than about 104, with fat-soluble vitamins being excluded.
2. The use according to claim 1 for active substances having a distribution coefficient in octanol/water of greater than 106 and a molecular weight below 5000.
3. The use according to claim 1 or 2, in which the active substance is an immunomodulator, a cytostatic, an antiinfective or contrast agent.
4. The use according to claims 1-3 for interstitial application.
5. The use according to claim 4 for intramuscular, subcutaneous or intradermal application.
6. A mixed micelle solution containing a low molecular immunomodulator having a distribution coeffiecient in octanol/ water of greater than 104.
7. A mixed micelle soluiton according to claim 6, in which the immunomodulator is (all-E)-3,7-dimethyl-9-(2-trifluoro-methyl)-6-(nonyloxy)phenyl-2,4,6,8-nonatetraenoic acid.
8. Use according to claim 1, substantially as hereinbefore described.
9. A mixed micelle solution according to claim 6, substantially as hereinbefore described and exemplified. F. R. KELLY & CO. AGENTS FOR THE APPLICANTS.
IE101790A 1989-03-21 1990-03-20 Use of mixed micelles and mixed micelle solutions of immunomodulators IE64191B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH104189 1989-03-21
CH10390 1990-01-12

Publications (2)

Publication Number Publication Date
IE901017L true IE901017L (en) 1990-09-21
IE64191B1 IE64191B1 (en) 1995-07-12

Family

ID=25683528

Family Applications (1)

Application Number Title Priority Date Filing Date
IE101790A IE64191B1 (en) 1989-03-21 1990-03-20 Use of mixed micelles and mixed micelle solutions of immunomodulators

Country Status (15)

Country Link
EP (1) EP0388817B1 (en)
JP (1) JP3007111B2 (en)
KR (1) KR900013942A (en)
AT (1) ATE102479T1 (en)
AU (1) AU635248B2 (en)
CA (1) CA2011262C (en)
DE (1) DE59004845D1 (en)
DK (1) DK0388817T3 (en)
ES (1) ES2062140T3 (en)
HU (1) HUT53799A (en)
IE (1) IE64191B1 (en)
IL (1) IL93721A (en)
MC (1) MC2102A1 (en)
NZ (1) NZ232865A (en)
PT (1) PT93522B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU6461090A (en) * 1989-10-30 1991-05-02 Abbott Laboratories Injectable formulation for lipophilic drugs
CA2033725C (en) * 1990-01-24 2001-05-29 Folker Pittrof Pharmaceutical and cosmetic compositions containing a salt of cholanic acid
JP2740153B2 (en) * 1995-03-07 1998-04-15 エフ・ホフマン−ラ ロシユ アーゲー Mixed micelle

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1202370B (en) * 1976-07-12 1989-02-09 Hoffmann La Roche INJECTABLE SOLUTIONS IN WHICH THE EMOLITHIC LIFE OF NATURAL MICELLES TRAINING AGENTS IS AVOIDED BY THE ADDITION OF LIPOIDS AND RELATED PRODUCTS
DE3221579A1 (en) * 1982-06-08 1983-12-22 Eckert, Theodor, Prof. Dr., 4400 Münster Solubilisation of active substances, which are sparingly soluble in water, in aqueous solution using a mixture of cholinephosphoric acid glycerol diester (choline-lecithin) and sodium deoxycholate as solubiliser, and the therapeutic use of the aqueous solutions obtained thereby
ZA854828B (en) * 1984-07-27 1986-03-26 Hoffmann La Roche Phenyl nonatetraenoic acid derivatives
EP0252004A1 (en) * 1986-06-26 1988-01-07 Ciba-Geigy Ag Pharmaceutical compositions for parenteral application
CA1319886C (en) * 1987-02-03 1993-07-06 Alberto Ferro Mixed micelle solutions

Also Published As

Publication number Publication date
NZ232865A (en) 1992-07-28
JPH02289511A (en) 1990-11-29
DE59004845D1 (en) 1994-04-14
CA2011262C (en) 2000-06-20
MC2102A1 (en) 1991-03-11
CA2011262A1 (en) 1990-09-21
IL93721A0 (en) 1990-12-23
KR900013942A (en) 1990-10-22
ES2062140T3 (en) 1994-12-16
PT93522B (en) 1996-03-29
HUT53799A (en) 1990-12-28
EP0388817B1 (en) 1994-03-09
IE64191B1 (en) 1995-07-12
AU5140490A (en) 1990-09-27
IL93721A (en) 1994-04-12
AU635248B2 (en) 1993-03-18
ATE102479T1 (en) 1994-03-15
HU901555D0 (en) 1990-06-28
EP0388817A3 (en) 1991-07-03
JP3007111B2 (en) 2000-02-07
DK0388817T3 (en) 1994-05-02
PT93522A (en) 1990-11-07
EP0388817A2 (en) 1990-09-26

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