WO2001041766A1 - The combination of a serotonin reuptake inhibitor and irindalone - Google Patents
The combination of a serotonin reuptake inhibitor and irindalone Download PDFInfo
- Publication number
- WO2001041766A1 WO2001041766A1 PCT/DK2000/000667 DK0000667W WO0141766A1 WO 2001041766 A1 WO2001041766 A1 WO 2001041766A1 DK 0000667 W DK0000667 W DK 0000667W WO 0141766 A1 WO0141766 A1 WO 0141766A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- reuptake inhibitor
- serotonin reuptake
- serotonin
- irindalone
- pharmaceutical composition
- Prior art date
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- 208000019116 sleep disease Diseases 0.000 description 1
- 208000022925 sleep disturbance Diseases 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 0.000 description 1
- 238000013222 sprague-dawley male rat Methods 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 235000000346 sugar Nutrition 0.000 description 1
- 150000008163 sugars Chemical class 0.000 description 1
- 230000000946 synaptic effect Effects 0.000 description 1
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- 229960005138 tianeptine Drugs 0.000 description 1
- 231100000027 toxicology Toxicity 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- PHTUQLWOUWZIMZ-GZTJUZNOSA-N trans-dothiepin Chemical compound C1SC2=CC=CC=C2C(=C/CCN(C)C)/C2=CC=CC=C21 PHTUQLWOUWZIMZ-GZTJUZNOSA-N 0.000 description 1
- RPZBRGFNBNQSOP-UHFFFAOYSA-N vilazodone hydrochloride Chemical compound Cl.C1=C(C#N)C=C2C(CCCCN3CCN(CC3)C=3C=C4C=C(OC4=CC=3)C(=O)N)=CNC2=C1 RPZBRGFNBNQSOP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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Definitions
- the present invention relates to the use of a combination of irindalone and a serotonin reuptake inhibitor (SRI), or any other compound, which causes an elevation in the level • ⁇ of extracellular serotonin, for the treatment of depression and other affective disorders
- SRI serotonin reuptake inhibitor
- SSRIs Selectn e serotonin reuptake inhibitors
- Augmentation of antidepressant therapy may be accomplished through the co- admimstration of mood stabilizers such as lithium carbonate or t ⁇ iodothyronin or by the use of electroshock
- the present invention 1 elates to the use of irindalone or a pharmaceutically acceptable 0 salt thereof for the preparation of a pharmaceutical composition to be used m combination with a serotonin reuptake inhibitor or any other compound, which causes an elevation in the level of extiacellular serotonin
- the present invention relates to the use of irindalone or a pharmaceutically s acceptable salt thereof for the preparation of a pharmaceutical composition useful foi augmenting and/or providing faster onset of the therapeutic effect of a serotonin reuptake inhibitor or any other compound, which causes an elevation m the level of extracellulai serotonin
- the present invention relates to the use as above, of irindalone, or a pharmaceutically acceptable salt thereof, for the treatment of depression, anxiety disorders and other affective disorders, eating disorders such as bulimia, anorexia and obesity, phobias, dysthymia, premenstrual syndrome, cognitive disorders, impulse control disorders, attention deficit hyperactivity disorder and drug abuse, in particular depression with a serotonin reuptake inhibitor or any other compound, which causes an elevation m the level of extracellular serotonin
- the anxiety disorders mentioned above include general anxiety disorder, panic anxiety, obsessive compulsive disorder, acute stress disorder, post trauma stress disorder or social anxiety disorder
- augmenting covers improving the therapeutic effect and/oi potentiating the therapeutic effect of an SRI or a compound which causes an elevation in the level of extracellulai 5-HT
- the invention relates to the use of irindalone or a pharmaceutically acceptable salt thereof and a compound, which is a serotonin reuptake inhibitor, or a compound, which causes an elevation m the level of extracellular serotonin, for the preparation of a pharmaceutical composition or kit for the treatment of diseases oi disorders responsive to the therapeutic effect of a serotonin reuptake inhibitoi, or any othei compound, which causes an elevation in the level of extiacellulai serotonin
- the diseases responsive to a serotonin leuptake inhibitor include depression, anxiety disordeis and other affective disorders, eating disoideis such as bulimia, anorexia and obesity, phobias, dysthymia, premenstiual syndiome, cognitive disordei s, impulse contiol disordei s, attention deficit hypeiactivity disorder and drug abuse, in particular depi ession
- anxiety disorders is as defined above.
- the present invention relates to the use of irindalone oi a pharmaceutically acceptable salt thereof foi the preparation of a pharmaceutical composition as above, which is adapted for simultaneous administration of the actn e ingredients
- such pharmaceutical compositions may contain the active ingredients within the same unit dosage form, e g in the same tablet or capsule
- Such unit dosage forms may contain the active ingiedients as a homogenous mixture or in separate compartments of the unit dosage form
- the present invention relates to the use of irindalone or a pharmaceutically acceptable salt thereof for the preparation of a pharmaceutical composition or kit as above, which is adapted for sequential administration of the active ingredients
- such pharmaceutical compositions may contain the active ingredients in discrete unit dosage forms, e g discrete tablets or capsules containing either of the active ingredients These discrete unit dosage forms may be contained in the same container or package, e g a blister pack
- kit means a pharmaceutical composition containing each of the active ingredients, but in discrete unit dosage forms
- the invention also relates to a pharmaceutical composition or kit comprising irindalone or a pharmaceutically acceptable salt thereof and a compound, which is a serotonin reuptake inhibitor, or any other compound, which causes an elevation m extracellular 5- HT, and optionally pharmaceutically acceptable carriers or diluents
- composition or kit of the invention may be adapted for simultaneous administration of the active ingredients or for sequential administration of the active ingredients, as described above
- the present invention relates to a method for the treatment of diseases oi disorders responsive to a serotonin reuptake inhibitor or any other compound, which causes an elevation in the level of extracellular serotonin, comprising administering irindalone or a pharmaceutically acceptable salt thereof and a serotonin reuptake inhibitor, or a compound, which causes an elevation in the level extracellular serotonin, to an individual in need thereof
- the present invention relates to a method for augmenting and/or providing faster onset of the therapeutic effect of a serotonin reuptake inhibitor or any other compound, which causes an elevation m the level extracellular serotonin, comprising administering irindalone or a pharmaceutically acceptable salt thereof to an individual to be treated with or undergoing treatment with the serotonin reuptake inhibitor or any othei compound, which causes an elevation m the level of extracellular serotonin
- the individuals which may benefit from treatment with a combination as above, may suffer from depression, anxiety disorders and other affective disorders, eating disorders such as bulimia, anorexia and obesity, phobias, premenstrual syndrome, dysthymia, cognitive disorders, impulse control disorders, attention deficit hyperactivity disorder and drug abuse, in particular depression.
- anxiety disorder includes general anxiety disorder, panic anxiety, obsessive compulsive disorder, acute stress disorder, post trauma stress disorder or social anxiety disorder.
- Irindalone and the serotonin reuptake inhibitor may be administered simultaneously as described above.
- the active ingredients may be administered sequentially, e.g. in two discrete unit dosage forms as described above.
- EP-Bl-183 349 are covered by EP-Bl-183 349.
- the compounds claimed therein are described as being useful for the treatment of hypertension and other cardiovascular diseases as well as anxiety.
- Irindalone has also been described as a potent peripheral 5-HT 2 antagonist with no or only low affinity for 5-HT I A and 5-HT ⁇ B receptors (Hyttel et al., Drug Dev. Res. 1988b, 15, 389-404, Arnt et al., Drug Dev Res. 1989, 16, 59-70 and B ⁇ ges ⁇ et al , Schizophrenia, Alfred Benzon Symposium 38, 1995, p 361-374)
- serotonin reuptake inhibitors show delayed onset of action Even m responders to SSRIs, several weeks of treatment are necessary to achieve a relief in symptoms Animal studies have shown that irindalone may provide fast onset of therapeutic effect of serotonin reuptake inhibitors
- irindalone may be used as add-on therapy for the augmentation of the response to SRIs in patients where at least 40-60% reduction m symptoms has not been achieved du ⁇ ng the first 6 weeks of treatment with an SRI
- the following list contains a number of serotonin reuptake inhibitors, which may benefit from augmentation with irindalone citalopram, escitalopram, fluoxetme, R-fluoxetme, sertralme, paroxetme, fluvoxamme, venlafaxine, duloxetine, dapoxetme, nefazodone, lmipramme, lmipramme N-oxide, desipramme, pirandamme, dazepinil, nefopam, befuralme, fezolamine, femoxetme, clomipramme, cianoimipramine, htoxetine, ce ⁇ clamme, seproxetme, WY 27587, WY 27866, lmeldine, ifoxetme, tiflucarbme, viqua ne, milnacipran, apelinap ⁇ ne, Y
- Othei therapeutic compounds which may benefit from augmentation with irindalone, include compounds, which causes an elevation in the extracellular level of 5-HT in the synaptic cleft, although they are not serotonin leuptake inhibitors
- One such compound is tianeptine
- seiotonm reuptake inhibitois and other compounds which causes an increase in the extracellulai level of serotonin, may not be construed as limiting
- SRIs which aie particularly preferred according to the present invention, include citalopram. escitalopram, fluoxetme, sertralme, paroxetme, fluvoxamme. venlafaxine, dapoxetme. nefazodone, lmipramin, femoxetme and clomipramme
- SSRI selective serotonin reuptake mhibitoi
- SSRIs selective serotonin reuptake inhibitors
- Particularly preferred SSRIs according to the invention are citalopram, escitalopram, fluoxetme, fluvoxamme, sertralme or paroxetme
- the active ingredients according to the invention may be used in the free base form or in the form of a pharmaceutically acceptable acid addition salt thereof, the lattei being obtainable by reaction of the base form with an appropriate acid
- Citalopram is preferably used in the form of the hydrobromide or as the base, escitalopram m the form of the oxalate, fluoxetme, sertralme and paroxetme in the form of the hydrochlo ⁇ de and fluvoxamme in the form of the maleate
- Irindalone is preferably used m the form of the tartrate salt
- the combination of irindalone with a serotonin reuptake inhibitor unexpectedly shows a synergistic effect on the central nervous system (CNS)
- CNS central nervous system
- combination therapy with irindalone using a normal dose of serotonin reuptake inhibitor has the advantage that an effective CNS effect may be obtained in the often large number of patients who do not respond to conventional monotherapy with SSRIs
- the amount of irindalone used in combination therapy may range from about 0 1 to about 150 mg/day, particulaily from about 0 1 to about 100 mg/day and more particularly from about 0 5 to about 50 mg/day and even more particularly from about 1 to about 5 mg/day
- Serotonin reuptake inhibitors including the SSRIs specifically mentioned heremabove, differ both in molecular weight and in activity
- the amount of serotonin reuptake inhibitor used m combination therapy depends on the nature of said serotonin reuptake inhibitor
- the serotonin reuptake inhibitor or the compound causing an increase m the level of extracellular 5-HT is administered at lower doses than required when the compound is used alone
- the serotonin reuptake inhibitor or the compound causing an increase in the level of extracellular 5-HT is administered in normal doses
- compositions of this invention an appropriate amount of the active mgred ⁇ ent(s), in salt form or base form, is combined in an intimate admixture with a pharmaceutically acceptable carrier, which can take a wide variety of forms depending on the form of preparation desired for administration
- a pharmaceutically acceptable carrier which can take a wide variety of forms depending on the form of preparation desired for administration
- these pharmaceutical compositions are desirably in unitary dosage form suitable for administration orally, rectally, percutaneously or by parenteral injection
- any of the usual pharmaceutical media may be employed, such as, for example, water, glycols, oils, alcohols and the like in the case of oral liquid preparations such as suspensions, syrups, elixirs and solutions; or solid carrieis such as starches, sugars, kaolin, lubricants, binders, disintegrating agents and the like in the case of powders, pills, capsules and tablets Because of their ease in administration, tablets and capsules represent the most advantageous oral dosage unit form, m which case solid pharmaceutical carriers are obviously employed
- unit dosage form refers to physically discrete units suitable as unitary dosages, each unit containing a predetermined quantity of active mgred ⁇ ent(s) calculated to produce the desired therapeutic effect, in association with the required pharmaceutical carrier
- dosage unit forms are tablets (including scored or coated tablets), capsules, pills, powder packets, wafers, mjectable solutions or suspensions, teaspoonfuls, tablespoonfuls and the like, and segregated multiples thereof.
- Irindalone may be administered before, during or after the administration of the serotonin reuptake inhibitor provided that the time between the administration of irindalone and the administration of the serotonin reuptake inhibitor is such that ingredients are allowed to act syneigistically on the CNS
- a composition containing both a serotonin reuptake inhibitor and irindalone may be particularly convenient
- irindalone and the serotonin reuptake inhibitor may be administered separately in the form of suitable compositions
- the compositions may be prepared as described heremabove
- the present invention also comprises products containing irindalone and a serotonin reuptake inhibitor as a combination preparation for simultaneous, separate or sequential use in psychiatnc drug therapy
- Such products may comprise, for example, a kit compnsing discrete unit dosage forms containing irindalone and discrete unit dosage forms containing a serotonin reuptake inhibitor, all contained in the same container or l*> pack, e g a blister pack
- preparations for simultaneous or sequential administration may instead of a serotonin reuptake inhibitor contain another compound causing an elevation in the level of extracellular 5-HT 0
- mice Male Sprague-Dawley rats, initially weighing 250 - 300 g, were used The animals weie housed under a 12-hr hght/daik cycle under controlled conditions for regulai m-dooi temperatuie (21 ⁇ 2°C) and humidity (55 ⁇ 5%) with food and tap water available ad 0 libitum
- osmotic mini pumps Alzet, 2ML2 and 2ML4 (Alza Corporation, Palo Alto, USA) were used The pumps were filled under aseptic conditions and implanted subcutanously under Sevorane anaesthesia (Abbott Laboratories, Chicago, USA) Single injections:
- Paroxetme and irindalone were injected alone or contemporary in doses of 5 mg/kg and 1 mg/kg s.c, respectively.
- a microdialysis probe (CMA/12. 0 5 mm diameter, 3 mm length) was inserted through the guide cannula Perfusion of the microdialysis probe with filtered Ringer solution (145 mM NaCl, 3 mM KC1, 1 mM MgCl 2 , 1 2 mM CaCl 2 ) was begun shortly before insertion of the probe into the bram and continued for the duration of the expe ⁇ ment at constant flow of 1 ⁇ l/mm After the expenments, the rats were sac ⁇ ficed by decapitation, their brains frozen and sliced (20 ⁇ m) and the position of the probes was verified Analysis of dialysate 5-HT
- Rats Male, wistar WU from M ⁇ llegard, Denmark were maintained on a food restricted diet and maintained at 85-90% of their free feeding weight for at least 7 days prior to the start of testing. Animals were trained (4-5 times per week) in an operant chamber on a fixed schedule (1 pellet every 30s) for 30 minutes per session. Drinking water was freely available, water intake was measured for every trial session Following three weeks of training water intake was stable (approximately 12 mL/rat/30 mm) and the animals were randomly allocated to treatment groups
- the SRIs fluvoxamme, clomipramme and fluoxetme have all been demonstrated to reduce the intake of water the schedule induce polydipsia model.
- the onset of action of the SSRIs alone is seen after 1-3 weeks, mirroring the clinical situation
- the effect of the combination of paroxetine and irindalone is observed after one day's treatment suggesting that this combination would have a fast onset of effect in the clinic
- the two-compartment test box is described by Sanchez et al Pharmacology & Toxicology 1995, 77, 71-78
- the test box is open-topped and divided into one black and one white compartment (ratio 2 3) by a partition which is black on the side facing the black compartment and white on the side facing the white compartment
- the white chamber is made of white perspex except for the lowest 7 5 cm
- This part is made of transparent perspex (outer walls) and black perspex (partition)
- the floor of the white compartment is divided into 9 fields and the compartment is illuminated by means of a Schott KL 1500 electronic lamp emitting cold light (560 Lux)
- the black box is made of black perspex and the floor of this compartment is divided into 6 fields
- the opening m the partition between the two compartments measures 7,5 x 7,5 cm
- the black and white boxes aie placed in a dark room
- the mice were transported to the animal holding room adjacent to the test room 18 hours before the test
- the test was performed as follows the mouse was placed into the centie of the b ⁇ ghtly- lit white compartment facing the opening to the black compartment and allowed to freely explore the apparatus for a total of 5 mm
- the light beams weie used to assess activity around the test box and critically the time for which the animals exploied the light and daik sections thereof
- mice were randomly assigned to the following groups (8 mice per group)
- mice in group 1 spent an average of 127 s (from a maximum of 300 s) in the light section of the box. Treatment with paroxetine (group 2) increased this to 143 s which is not significant. Animals treated with irindalone alone (groups 3 and 4) had average times in light of 140 and 148 s for 0.31 and 1.3 mg/kg doses, respectively; which is not significant. The mice treated with the combination of paroxetine and irindalone spent an average of 162 s (group 5) and 174 s (group 6) in the light. Group 5 was significantly different from group 1 (P ⁇ 0.05) whilst group 6 was significantly different from group 1 , group 2 and group 4 (P ⁇ 0.05).
- mice treated with the two vehicles had an average time in light of 123 + 16 s.
- Treatment with paroxetine did not significantly change the level of exploration in light (group 2, 132 + 10 s; group 3, 140 + 12 s; group 4, 157 + 10 s; not significant).
- irindalone alone (group 5) was without effect (average time in light 142 + 20 s; not significant).
- the animals treated with the combination of paroxetine and irindalone have the following average times in light; group 6, 143 + 1 1 s; group 7, 203 + 22 s (PO.05 vs groups 1 and 3) and group 8, 206 + 10 s (P ⁇ 0.05 vs groups 1, 4 and 5).
- irindalone potentiated the anxiolytic potential of paroxetine suggesting better efficacy for the combination treatment than the paroxetine alone.
- the benefit was observed following acute and importantly chronic treatment with paroxetine suggesting the potential of irindalone as an "add-on" therapy to enhance the efficacy of SSRIs.
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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US8618288B2 (en) | 2003-09-17 | 2013-12-31 | Janssen Pharmaceutica Nv | Pyrimidine compounds as serotonin receptor modulators |
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