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
  • A61K31/33—Heterocyclic compounds
  • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
  • A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
  • A61K31/44—Non condensed pyridines; Hydrogenated derivatives thereof
• • 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
  • A61K31/33—Heterocyclic compounds
  • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
  • A61K31/40—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with one nitrogen as the only ring hetero atom, e.g. sulpiride, succinimide, tolmetin, buflomedil
• • 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
  • A61K31/33—Heterocyclic compounds
  • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
  • A61K31/40—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with one nitrogen as the only ring hetero atom, e.g. sulpiride, succinimide, tolmetin, buflomedil
  • A61K31/401—Proline; Derivatives thereof, e.g. captopril
• • 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
  • A61K31/33—Heterocyclic compounds
  • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
  • A61K31/40—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with one nitrogen as the only ring hetero atom, e.g. sulpiride, succinimide, tolmetin, buflomedil
  • A61K31/4015—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with one nitrogen as the only ring hetero atom, e.g. sulpiride, succinimide, tolmetin, buflomedil having oxo groups directly attached to the heterocyclic ring, e.g. piracetam, ethosuximide
• • 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
  • A61K31/33—Heterocyclic compounds
  • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
  • A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
  • A61K31/44—Non condensed pyridines; Hydrogenated derivatives thereof
  • A61K31/4427—Non condensed pyridines; Hydrogenated derivatives thereof containing further heterocyclic ring systems
  • A61K31/4439—Non condensed pyridines; Hydrogenated derivatives thereof containing further heterocyclic ring systems containing a five-membered ring with nitrogen as a ring hetero atom, e.g. omeprazole
• • 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
  • A61K31/33—Heterocyclic compounds
  • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
  • A61K31/495—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with two or more nitrogen atoms as the only ring heteroatoms, e.g. piperazine or tetrazines
  • A61K31/505—Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim
  • A61K31/519—Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim ortho- or peri-condensed with heterocyclic rings
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K45/00—Medicinal preparations containing active ingredients not provided for in groups A61K31/00 - A61K41/00
  • A61K45/06—Mixtures of active ingredients without chemical characterisation, e.g. antiphlogistics and cardiaca
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K9/00—Medicinal preparations characterised by special physical form
  • A61K9/0012—Galenical forms characterised by the site of application
  • A61K9/007—Pulmonary tract; Aromatherapy
  • A61K9/0073—Sprays or powders for inhalation; Aerolised or nebulised preparations generated by other means than thermal energy
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P11/00—Drugs for disorders of the respiratory system
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P11/00—Drugs for disorders of the respiratory system
  • A61P11/06—Antiasthmatics
• • 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

Definitions

• the present invention relates to a combination of an inhaled/oral PDE 4 inhibitor in combination with inhaled anticholinergic bronchodilators (muscarinic receptor antagonists), preferentially Roflumilast or AWD-12-281 and R,R-glycopyrrolate, for symptomatic or prophylactic treatment of respiratory diseases, especially those accompanied by obstruction or inflammation such as chronic obstructive pulmonary disease (COPD) or asthma. It further comprises the presentation of this combination in a locally applied (inhaled) formulation and application in an inhalation device for instance in the Novolizer®.
• inhaled anticholinergic bronchodilators muscle receptor antagonists
• preferentially Roflumilast or AWD-12-281 and R,R-glycopyrrolate for symptomatic or prophylactic treatment of respiratory diseases, especially those accompanied by obstruction or inflammation such as chronic obstructive pulmonary disease (COPD) or asthma.
• COPD chronic obstructive pulmonary disease
• It further comprises the presentation of this combination
• Asthma bronchiale affecting as many as 10% of individuals in industrialized countries, is characterized by bronchoconstriction, chronic airway inflammation, airway hyperreactivity, and mucosal edema. Airway remodeling and altered noncholinergic, nonadrenergic neurotransmission may contribute to irreversible airway obstruction and reduction of pulmonary function. Asthma bronchiale has emerged as a major public health problem worldwide over the past 20 years. Although data indicate that current asthma therapies led to limited decreases in death rates, it continues to be a significant health care problem (Mannino et al., Surveill Summ 2002; 51:1-13). It still is one of the leading causes of preventable hospitalization worldwide and accounts for several million lost workdays. Along with the increase in asthma prevalence, the costs associated with this disease have also risen dramatically.
• COPD chronic obstructive pulmonary disease
• asthma airway inflammation
• triggering stimuli such as the allergens themselves, cells such as T cells, epithelial cells and mast cells that produce a variety of cytokines including IL-5, GM-CSF, IL-3, IL4 and IL-13 and chemokines such as eotaxin, adhesion molecules, etc.
• cytokines including IL-5, GM-CSF, IL-3, IL4 and IL-13
• chemokines such as eotaxin, adhesion molecules, etc.
• pharmacotherapy is the mainstay of treatment of asthma.
• Short- and long-acting inhaled ⁇ 2-adrenoceptor agonists are available.
• the short-acting ⁇ 2-adrenoceptor agonists are now used on an on-demand-basis for rapid relief of symptoms.
• long-acting inhaled ⁇ 2-adrenoceptor agonists have had an increasing role in the management of asthma, particularly in patients with moderate to severe asthma.
• Antimuscarinic drugs are rather less efficacious in the relief of an asthma attack than the ⁇ 2-adrenoceptor agonists (Rodrigo and Rodrigo, Chest 2002; 121:1977-87).
• COPD ulcerative colitis
• the current management is focused on the improvement of the lung function of patients suffering from COPD.
• the first step is in this process smoking cessation. There is evidence that smoking reduction or cessation may result in improvement of some respiratory parameters.
• Bronchodilators ⁇ 2-adrenoceptor agonists and anticholinergics
• Short- and long-acting ⁇ 2-adrenoceptor agonists such as salbutamol, fenoterol, salmeterol, formoterol are established therapeutics in the symptomatic COPD management.
• ipratropium is widely used.
• tiotropium a long-acting anticholinergic with a certain preference to M 3 -muscarinic receptors has now been introduced world-wide (Hansel and Barnes, Drugs Today (Barc) 2002; 38:585-600).
• Anticholinergic agents can effectively be used in the treatment of COPD in horses, as well.
• Ipratropium at a dose of 2400 ⁇ g/horse is an effective bronchodilator in horses with COPD (Duvivier et al., Equine Vet J 1999; 31:204, Bayly et al, Equine Vet J. 2002 January;34(1):36-43).
• the anti-inflammatory therapy of COPD is unsolved.
• Airflow obstruction and airway inflammation are features of asthma as well as COPD.
• both diseases are of chronic inflammatory nature associated with cellular infiltration and activation.
• bronchial asthma is predominantly characterized by eosinophils and CD4 lymphocytes, neutrophil granulocytes, CD8 lymphocytes and macrophages appear to play a major role in the pathogenesis of COPD.
• PDEs that are involved in smooth muscle relaxation and are also found in eosinophils as well as neutrophils and other inflammatory and immunocompetent cells probably constitute an essential element of the progress of both diseases.
• PDE4 belongs to a superfamily of at least 11 isozymes catalyzing the hydrolysis of cAMP and/or cGMP.
• PDE4 is a major cAMP-metabolizing enzyme in immune and inflammatory cells, airway smooth muscle, and pulmonary nerves. Based on its cellular and tissue distribution, selective inhibitors of this enzyme suppress mediator release from inflammatory cells (Hatzelmann and Schudt, J Pharmacol Exp Ther 2001; 297:267-79, Marx et al., Pulm Pharmacol Ther 2002; 15:7-15, Kuss et al., J Pharmacol Exp Ther 2003; 307:373-85).
• Anticholinergic medications have been accepted as an important treatment modality in COPD and chronic asthma.
• the anticholinergic bronchodilator, the muscarinic receptor antagonist, used in this invention will be a long-acting compound. Any compound of this type can be used in this combination therapy approach. By long-lasting it is meant that the drug will have an effect on the bronchi that lasts around 12 hours or more, up to 24 hours.
• the recently approved long acting inhaled anticholinergic drug, tiotropium produces sustained bronchodilation throughout the 24 hour day (Calverley et al., Thorax 2003; 58:855-60).
• Glycopyrrolate belongs to the so-called anticholinergic drugs and antagonizes the neurotransmitter acetylcholine at its receptor site. This effect leads to a considerable bronchodilatation and a reduced mucus secretion.
• Glycopyrrolate a quaternary ammonium compound, consists of four stereoisomers. It is poorly absorbed from mucus membranes, thus reducing anticholinergic side effects (Ali-Melkkila et al., Acta Anaesthesiol Scand 1993; 37:633-42). Glycopyrrolate possesses no selectivity in its binding to the M 1 -M 3 receptors.
• glycopyrrolate dissociates slowly from M 3 muscarinic receptors (Haddad et al., Br J Pharmacol 1999; 127:413-20). Similarly to tiotropium, this behavior explains glycopyrrolate's relative receptor selectivity and its long duration of action.
• a new combination drug comprising a PDE4 inhibitor and an anticholinergic, which is superior to monocompounds with respect to therapeutic efficacy, onset and duration of action, or side-effects.
• topical (inhaled) anticholinergics such as racemic glycopyrrolate, or its enantiomers, especially R,R-glycopyrrolate, or its diastereoisomers or their physiologically acceptable salts and inhaled/oral phosphodiesterase (PDE) 4 inhibitors such as AWD12-281 or Roflumilast or their physiologically acceptable salts results in a more effective and safer treatment of bronchial asthma and chronic obstructive pulmonary diseases (COPD) which allows for lower doses or which decreases side-effects.
• topical (inhaled) anticholinergics such as racemic glycopyrrolate, or its enantiomers, especially R,R-glycopyrrolate, or its diastereoisomers or their physiologically acceptable salts
• PDE 4 inhibitors such as AWD12-281 or Roflumilast or their physiologically acceptable salts results in a more effective and safer treatment of bronchial asthma and chronic obstructive pulmonary diseases (COPD)
• the PDE4 inhibitor useful in this invention may be any compound that is known to inhibit the PDE4 enzyme and which is discovered to act as highly specific PDE4 inhibitors and which is preferably used for inhalation.
• preclinical and clinical studies with the highly potent and selective PDE4 inhibitor AWD 12-281 showed that this compound has a good preclinical and clinical efficacy.
• AWD 12-281 suppressed allergen-induced airway eosinophilia with an ID50 of 7 ⁇ g/kg when administered intrapulmonary.
• the ID50 value of the known corticosteroid beclomethasone was comparable (0.1 ⁇ g/kg). Due to its unique metabolic profile, the compound has a suitable safety profile after topical (nasal or inhaled) administration.
• AWD 12-281 When AWD 12-281 is given to dogs by inhalation, no emesis was induced up to the highest feasible dose (15 mg/kg) indicating that AWD 12-281 is useful for inhaled treatment of asthma and COPD (Kuss et al., J Pharmacol Exp Ther 2003; 307:373-85).
• PBMCs peripheral blood mononuclear cells
• PBMCs were isolated from heparinized blood samples of healthy donors by density gradient centrifugation. An equal volume of Hanks buffer (Life Technologies, Heidelberg, Germany) is added to heparinized whole blood samples. 15 ml Histopaque-1077 (Sigma, Deisenhofen, Germany) are overlayed with a maximum of 40 ml of blood/Hanks mixture were centrifuged for 30 min at room temperature (2000 rpm). A visible band containing PBMCs is transferred to a fresh tube and washed twice with Hanks-buffer.
• Hanks buffer Life Technologies, Heidelberg, Germany
• PBMCs were cultured in RPMI 1640 Medium supplemented with 10% fetal calf serum (FCS) at 37° C. 5% CO 2 overnight. PBMCs were isolated from other cells by adherence method, non-adherent cells were removed by changing the medium.
• FCS fetal calf serum
• Cytokine measurements in culture supernatants are done by sandwich ELISA using matched antibody pairs (Pharmingen, Heidelberg, Germany).
• ELISA plates (Maxisorb, Nunc) are coated overnight with anti-cytokine monoclonal antibody (mAb) in 0.1 M carbonate buffer, pH 9.5. After being washed, plates are blocked with Assay Diluent (Pharmingen, Heidelberg, Germany) for 1 h and washed again. Appropriately diluted supernatant samples and standards are distributed in duplicates and the plates are incubated for 2 h at room temperature.
• Plates are washed, incubated for 1 h with working detector (biotinylated anti-cytokine antibody and Avidin-horseradish peroxidase conjugate). After washing, substrate (TMB and hydrogen peroxide) is, added. The reaction is stopped by adding of 1M H 3 PO 4 . Plates are read at 450 nm (reference 570 nm) in a microplate reader (Dynatech). The results are expressed as a percentage of the control level of cytokines production by cells stimulated in the absence of the compound.
• Both the anticholinergic and inhaled/oral PDE4 inhibitors can effectively be used in the treatment of various equine airway diseases.
• Activated neutrophils are recruited to the lungs of horses with COPD that may contribute to inflammation and lung damage. It has been demonstrated that PDE4 inhibitors may reduce neutrophil activation in vivo in horses with COPD (Rickards et al., J Vet Pharmacol Ther 2001; 24:275-81).
• the combination therapy contemplated by this invention comprises administering a PDE4 inhibitor with a long-acting anticholinergic bronchodilator to prevent onset of a pulmonary disease event or to treat an existing condition and to reduce airway inflammation.
• the compounds may be administered together in a single dosage form. Or they may be administered in different dosage forms. They may be administered at the same time. Or they may be administered either close in time or remotely, such as where one drug is administered in the morning and the second drug is administered in the evening.
• the combination may be used prophylactically or after the onset of symptoms has occurred. In some instances the combination(s) may be used to prevent the progression of a pulmonary disease or to arrest the decline of a function such as lung function.
• These drugs, the anticholinergics and the PDE4 inhibitors are usually administered as an aerosol with or without propellant, or as an inhaled powder, for instance with the Novolizer®.
• This invention contemplates either co-administering both drugs in one delivery form such as an inhaler, which is putting both drugs in the same inhaler.
• Formulations are within the skill of the art (for instance contain excipients like lactose monohydrate).
• the active ingredients may be given from 1 to 8 times a day, sufficient to exhibit the desired activity.
• the active components are given about once or four times a day, more preferably once or twice a day.
• the PDE4 inhibitor can be administered in an amount of between 200 and 5.000 ⁇ g/day adult human with the preference of 500 to 2.000 ⁇ g/day in dependence of the intensity of the airway inflammation.
• the PDE4 inhibitor for example roflumilast can be administered inhaled or orally.
• the inhaled anticholinergic drug, racemic glycopyrrolate, one of its enantiomers, especially R,R-glycopyrrolate or one of its diastereoisomers or a mixture thereof and its salts, solvates and hydrates can be administered in an amount of between 5 and 500 ⁇ g/day adult human with the preference of 15 to 300 ⁇ g/day.
• a dosage range between 5 and 100 ⁇ g/day is especially preferred.
• both active agents would be administered at the same time, or very close in time.
• one drug could be taken in the morning and one later in the day.
• one drug could be taken twice daily and the other once daily, either at the same time as one of the twice-a-day dosing occurred, or separately.
• both drugs would be taken together at the same time.
• the anticholinergic, especially R,R-glycopyrrolate can be given to horses in an amount of 1-32 ⁇ g/kg/day with the preference between 4 and 16 ⁇ g/kg/day alone or in combination with an inhaled PDE4 inhibitor administered in an amount of between 4 and 100 ⁇ g/day adult human with the preference of 10 to 40 ⁇ g/day in dependence of the intensity of the airway inflammation.
• a quantity of 50 g micronized R,R-glycopyrrolate is mixed with 100 g alpha lactose monohydrate, the mixture is given on a sieve of 0.5 mm mesh size and finally mixed again.
• 500 g micronized AWD 12-281 is mixed with 1000 g alpha lactose monohydrate, the mixture is given on a sieve of 0.8 mm mesh size and finally mixed again.
• the two mixtures received are blended and filled up with alpha lactose monohydrate to 12000 g. Subsequently, it is mixed again and the powder mixture received is filled in powder inhalers releasing 12 mg of powder per single dose.
• Per single dose, 50 ⁇ g R,R-glycopyrrolate and 500 ⁇ g AWD 12-281 are released from a powder inhaler and supplied to the patient's airways.

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