EP0946182A1 - 17$g(a)-DIHYDROEQUILENIN FOR USE AS A MEDICAL ANTIOXIDANT - Google Patents

17$g(a)-DIHYDROEQUILENIN FOR USE AS A MEDICAL ANTIOXIDANT

Info

Publication number
EP0946182A1
EP0946182A1 EP97948610A EP97948610A EP0946182A1 EP 0946182 A1 EP0946182 A1 EP 0946182A1 EP 97948610 A EP97948610 A EP 97948610A EP 97948610 A EP97948610 A EP 97948610A EP 0946182 A1 EP0946182 A1 EP 0946182A1
Authority
EP
European Patent Office
Prior art keywords
dihydroequilenin
free radical
pharmaceutically acceptable
sulfate ester
disease
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
EP97948610A
Other languages
German (de)
English (en)
French (fr)
Inventor
Steven Jay Adelman
Dorothy Helen Prozialeck
Donald Eugene Clark
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wyeth
Original Assignee
American Home Products Corp
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 American Home Products Corp filed Critical American Home Products Corp
Publication of EP0946182A1 publication Critical patent/EP0946182A1/en
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • A61K31/56—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids
    • A61K31/565—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids not substituted in position 17 beta by a carbon atom, e.g. estrane, estradiol
    • 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
    • A61K31/56—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids
    • A61K31/565—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids not substituted in position 17 beta by a carbon atom, e.g. estrane, estradiol
    • A61K31/568—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids not substituted in position 17 beta by a carbon atom, e.g. estrane, estradiol substituted in positions 10 and 13 by a chain having at least one carbon atom, e.g. androstanes, e.g. testosterone
    • A61K31/5685—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids not substituted in position 17 beta by a carbon atom, e.g. estrane, estradiol substituted in positions 10 and 13 by a chain having at least one carbon atom, e.g. androstanes, e.g. testosterone having an oxo group in position 17, e.g. androsterone
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P19/00—Drugs for skeletal disorders
    • 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
    • A61P25/28—Drugs for disorders of the nervous system for treating neurodegenerative disorders of the central nervous system, e.g. nootropic agents, cognition enhancers, drugs for treating Alzheimer's disease or other forms of dementia
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P29/00—Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P35/00—Antineoplastic agents
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P39/00—General protective or antinoxious agents
    • A61P39/06—Free radical scavengers or antioxidants

Definitions

  • Biologically generated free radicals have been implicated in a large number of disease states.
  • the survival of aerobic organisms in an oxygen environment involves a complicated interplay between the biological generation of these very reactive chemical species and the ability of the organism to control them (Del Maestro RF, Acta Phy Scan Suppl. 492:153-68 (1980)).
  • This interplay between the host organism and biologically generated free radicals results in profound biochemical alterations which culminate in cellular injury and death of the organism.
  • the accumulated products of free radical reactions result in some of the large number of disease conditions which have been suggested to result, in part, from cellular injury induced by an increased flux of intracellular free radicals.
  • These include, but are not limited to cancers, cardiovascular disease, central nervous system disorders, bone disease, aging, Alzheimer's dementia, inflammatory disorders, rheumatoid arthritis, autoimmune diseases, respiratory distress and emphysema.
  • Oxidation and the use of antioxidants is also important for the treatment of numerous inflammatory disease states.
  • Rheumatoid arthritis is the most common chronic inflammatory disease.
  • Epidemiological studies reveal a prevalence rate of classical and definite RA between 0.3 and 1.5 percent.
  • Joint disease with chronic persistent inflammation is accompanied by the formation of H2O2 in the inflamed rheumatoid joint.
  • oxygen free radicals are also produced, especially by polymorphonuclear leukocytes (PMN) and macrophages. In any chronic or acute inflammatory disease, PMN and macrophages will produce both O2 " and H2O2.
  • Tuberculosis, psoriasis, systemic lupus erythematosus, other autoimmune diseases, and adult respiratory distress syndrome can also be mentioned as inflammatory diseases with oxidation as a contributor, and many others can be added to this list.
  • Antioxidants have been suggested to be protective against breast cancer and other cancers including those of the brain and liver, as well as to protect against cardiovascular disease and osteoporosis (Wiseman H, Free Radical Res 21(3): 187-94 (1994)). They have been demonstrated to protect model and cellular membranes including the nuclear membrane against potentially carcinogenic free radical intermediates and the products of lipid peroxidation. Severe complications associated with atherosclerosis and its common incidence have focused attention on prevention and therapy of this vascular disease state, possibly through their ability to protect low density lipoproteins (LDL) against oxidative damage (Steinberg D, N Engl J of Med 14:915-924 (1989)).
  • LDL low density lipoproteins
  • this invention provides a method of treating or inhibiting free radical induced disease states by administering an antioxidant amount of 17 ⁇ -dihydroequilenin or its pharmaceutically acceptable salt of the 3-sulfate ester, to a mammal in need thereof.
  • this invention provides a process for treating free radical reactions with enzymes, ion channels, structural proteins and membrane lipids in a mammal, which comprises administering 17 ⁇ - dihydroequilenin or a pharmaceutically acceptable sulfate ester salt thereof, as a sacrificial substrate, in an amount sufficient to selectively react with and inhibit free radical reaction with the patients enzymes, ion channels, structural proteins or membrane lipids.
  • antioxidant therapy is indicated to be warranted are with cancers, central nervous system disorders, bone disease, aging, inflammatory disorders, peripheral vascular disease, rheumatoid arthritis, autoimmune diseases, respiratory distress, emphysema, prevention of reperfusion injury, viral hepatitis, chronic active hepatitis, tuberculosis, psoriasis, systemic lupus erythematosus, adult respiratory distress syndrome, central nervous system trauma and stroke.
  • treating covers treatment of an existing condition, ameliorating the condition, or providing palliation of the condition and inhibiting includes inhibiting or preventing the progress or development of the condition.
  • Pharmaceutically acceptable salts of 17 ⁇ -dihydroequilenin 3-sulfate ester include, but are not limited to, the alkali metal salts, alkaline earth metal salts, ammonium salts, alkylamine salts containing 1-6 carbon atoms or dialkylamine salts containing 1-6 carbon atoms in each alkyl group.
  • the antioxidant properties of 17 ⁇ -dihydroequilenin were established in a standard pharmacological test procedure that measured the ability to inhibit the formation of oxidatively modified low density lipoprotein (LDL) induced by exposure to either Cu++ ions or cultured endothelial cells (Parthasarathy S, Proc Natl Acad Sci USA 86:1046-1050 (1989)) by the TBARS (thiobarbituric acid reactive substances) method for analysis of free aldehydes (Yagi K., Biochem Med 15:212-216 (1976)).
  • LDL low density lipoprotein
  • 17 ⁇ -Dihydroequilenin when tested at a concentration of 25nM was able to extend the lag phase in the formation of conjugated dienes in human LDL by 28%.
  • T 50 and T max were extended by 31% and 30%, respectively.
  • estrone at 25 nM increased all parameters by only 7-10%.
  • 17 ⁇ -Dihydroequilenin at 25 nM had a marked inhibitory effect on the formation of conjugated dienes in human HDL. It extended the lag phase by 299%.
  • T 50 and T ma! . were extended by 134% and 118%, respectively.
  • Estrone at the same concentration effected the formation of conjugated dienes in HDL by extending the lag phase by 20% , T 50 by 38% and T max by 46%.
  • 17 ⁇ -Dihydroequilenin at 25 nM had no effect on the lag phase in the formation of conjuagted dienes in human plasma. However, it did extend the T 50 and T max by 19% and 32%, respectively, indicating that although it did not effect the initiation of oxidation it has slowed its rate. Estrone in this system also had no effect on the lag phase, and only a 5% and 10% effect on its T 50 and T max , repectively.
  • porcine aortic endothelial cells were exposed to LDL that had been modified as above, by exposure to Cu++ in the presence and absence of 17 ⁇ -dihydroequilenin. Oxidized LDL has been demonstrated to be cytotoxic to endothelial cells, and this process has also been strongly implicated in the atherogenic process. Subsequent to a 24 hr incubation of the cells with the treated LDL, an MTT assay was performed to assess cytotoxicity (Hansen MB, J Immu Methods 119:203-210 (1989)). This test procedure assesses the percent of cells that are viable (live) in a given assay.
  • 17 ⁇ -dihydroequilenin and the pharmaceutically acceptable salts of its sulfate ester are therefore useful as antioxidants, and in the treatment or inhibition of free radical induced disease states.
  • the antioxidants of this invention can be formulated neat or with a pharmaceutical carrier for administration, the proportion of which is determined by the solubility and chemical nature of the compound, chosen route of administration and standard pharmacological practice.
  • the pharmaceutical carrier may be solid or liquid.
  • a solid carrier can include one or more substances which may also act as flavoring agents, lubricants, solubilizers, suspending agents, fillers, glidants, compression aids, binders or tablet-disintegrating agents; it can also be an encapsulating material.
  • the carrier is a finely divided solid which is in admixture with the finely divided active ingredient.
  • the active ingredient is mixed with a carrier having the necessary compression properties in suitable proportions and compacted in the shape and size desired. The powders and tablets preferably contain up to 99% of the active ingredient.
  • Suitable solid carriers include, for example, calcium phosphate, magnesium stearate, talc, sugars, lactose, dextrin, starch, gelatin, cellulose, methyl cellulose, sodium carboxymethyl cellulose, polyvinylpyrrolidine, low melting waxes and ion exchange resins.
  • Liquid carriers are used in preparing solutions, suspensions, emulsions, syrups, elixirs and pressurized compositions.
  • the active ingredient can be dissolved or suspended in a pharmaceutically acceptable liquid carrier such as water, an organic solvent, a mixture of both or pharmaceutically acceptable oils or fats.
  • the liquid carrier can contain other suitable pharmaceutical additives such as solubilizers, emulsifiers, buffers, preservatives, sweeteners, flavoring agents, suspending agents, thickening agents, colors, viscosity regulators, stabilizers or osmo-regulators.
  • suitable examples of liquid carriers for oral and parenteral administration include water (partially containing additives as above, e.g.
  • cellulose derivatives preferably sodium carboxymethyl cellulose solution
  • alcohols including monohydric alcohols and polyhydric alcohols, e.g. glycols) and their derivatives, lethicins, and oils (e.g. fractionated coconut oil and arachis oil).
  • the carrier can also be an oily ester such as ethyl oleate and isopropyl myristate.
  • Sterile liquid carriers are useful in sterile liquid form compositions for parenteral administration.
  • the liquid carrier for pressurized compositions can be halogenated hydrocarbon or other pharmaceutically acceptable propellant.
  • Liquid pharmaceutical compositions which are sterile solutions or suspensions can be utilized by, for example, intramuscular, intraperitoneal or subcutaneous injection. Sterile solutions can also be administered intravenously.
  • the compounds of this invention can also be administered orally either in liquid or solid composition form.
  • the antioxidants of this invention may be administered rectally in the form of a conventional suppository.
  • the antioxidants of this invention may be formulated into an aqueous or partially aqueous solution, which can then be utilized in the form of an aerosol.
  • the compounds of this invention may also be administered transdermally through the use of a transdermal patch containing the active compound and a carrier that is inert to the active compound, is non toxic to the skin, and allows delivery of the agent for systemic absorption into the blood stream via the skin.
  • the carrier may take any number of forms such as creams and ointments, pastes, gels, and occlusive devices.
  • the creams and ointments may be viscous liquid or semisolid emulsions of either the oil-in-water or water-in-oil type.
  • Pastes comprised of absorptive powders dispersed in petroleum or hydrophilic petroleum containing the active ingredient may also be suitable.
  • a variety of occlusive devices may be used to release the active ingredient into the blood stream such as a semipermiable membrane covering a reservoir containing the active ingredient with or without a carrier, or a matrix containing the active ingredient. Other occlusive devices are known in the literature.
  • the antioxidants of this invention may be employed as a solution, cream, or lotion by formulation with pharmaceutically acceptable vehicles containing 0.1 - 5 percent, preferably 2%, of active compound which may be administered to a fungally affected area.
  • the dosage requirements vary with the particular compositions employed, the route of administration, the severity of the symptoms presented and the particular subject being treated. Based on the results obtained in the standard pharmacological test procedures, projected daily dosages of active compound would be 0.02 ⁇ g/kg - 500 ⁇ g/kg. Treatment will generally be initiated with small dosages less than the optimum dose of the compound.
  • the pharmaceutical composition is in unit dosage form, e.g. as tablets or capsules.
  • the composition is sub-divided in unit dose containing appropriate quantities of the active ingredient;
  • the unit dosage forms can be packaged compositions, for example, packeted powders, vials, ampoules, prefilled syringes or sachets containing liquids.
  • the unit dosage form can be, for example, a capsule or tablet itself, or it can be the appropriate number of any such compositions in package form.

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Neurosurgery (AREA)
  • Biomedical Technology (AREA)
  • Neurology (AREA)
  • Epidemiology (AREA)
  • Rheumatology (AREA)
  • Pain & Pain Management (AREA)
  • Biochemistry (AREA)
  • Hospice & Palliative Care (AREA)
  • Toxicology (AREA)
  • Psychiatry (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
EP97948610A 1996-12-09 1997-12-05 17$g(a)-DIHYDROEQUILENIN FOR USE AS A MEDICAL ANTIOXIDANT Ceased EP0946182A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US76263496A 1996-12-09 1996-12-09
US762634 1996-12-09
PCT/US1997/022155 WO1998025627A1 (en) 1996-12-09 1997-12-05 17α-DIHYDROEQUILENIN FOR USE AS A MEDICAL ANTIOXIDANT

Publications (1)

Publication Number Publication Date
EP0946182A1 true EP0946182A1 (en) 1999-10-06

Family

ID=25065657

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97948610A Ceased EP0946182A1 (en) 1996-12-09 1997-12-05 17$g(a)-DIHYDROEQUILENIN FOR USE AS A MEDICAL ANTIOXIDANT

Country Status (13)

Country Link
EP (1) EP0946182A1 (hu)
JP (1) JP2001506629A (hu)
KR (1) KR20000069346A (hu)
CN (1) CN1239890A (hu)
AR (1) AR010336A1 (hu)
AU (1) AU743519B2 (hu)
BR (1) BR9714382A (hu)
CA (1) CA2272089A1 (hu)
HU (1) HUP0000570A3 (hu)
IL (1) IL130069A0 (hu)
NZ (1) NZ336341A (hu)
WO (1) WO1998025627A1 (hu)
ZA (1) ZA9711053B (hu)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6271221B1 (en) * 1996-12-10 2001-08-07 American Home Products Corporation Use of equilenin as an antioxidant
DE10154221A1 (de) * 2001-11-07 2003-05-15 Max Delbrueck Centrum Mittel zur Behandlung von Läsionen des Nervensystems

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4338314C1 (de) * 1993-11-10 1995-03-30 Jenapharm Gmbh Pharmazeutische Präparate zur Prophylaxe und Therapie radikalvermittelter Zellschädigungen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9825627A1 *

Also Published As

Publication number Publication date
HUP0000570A2 (hu) 2000-10-28
WO1998025627A1 (en) 1998-06-18
AU743519B2 (en) 2002-01-31
CN1239890A (zh) 1999-12-29
AR010336A1 (es) 2000-06-07
IL130069A0 (en) 2000-02-29
CA2272089A1 (en) 1998-06-18
BR9714382A (pt) 2000-05-16
ZA9711053B (en) 1999-06-09
HUP0000570A3 (en) 2000-12-28
NZ336341A (en) 2002-02-01
KR20000069346A (ko) 2000-11-25
AU5464498A (en) 1998-07-03
JP2001506629A (ja) 2001-05-22

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