Combination of 5-HT7 receptor antagonist and serotonin reuptake inhibitor therapy

1. A pharmaceutical composition comprising:

(a) (i) a therapeutically effective amount of a 5-HT7 receptor antagonist, wherein said 5-HT7 receptor antagonist is selected from the group consisting of:

(R)-3-[2-[2-(4-Methylpiperidin-1-yl)ethyl]pyrrolidine-1-sulfonyl]phenol;

(R)-3,N-Dimethyl-N-[1-methyl-3-(4-methylpiperidin-1-yl)propyl]benzene sulfonamide;

R-(+)-1-(toluene-3-sulfonyl)-2[2-(4-methylpiperidin-1-yl)ethyl]-pyrrolidine;

LY-215840;

2a-[4-4-phenyl-1,2,3,6-tetrahydropyridyl])-2a,3,4,5-tetrahydrobenzo[ed]-indol[(iH)-1;

Ensaculin;

S 23751;

Zopetine;

SB248709;

BTS 79018; and

1-Benzyl-3-(4-chloro-phenyl)-1,4,5,6,7,8-hexahydro-1,2,6-triaza-azulene;

and (ii) a therapeutically effective amount of a serotonin reuptake inhibitor, said amounts together providing an effective combined amount; and

(b) a pharmaceutically acceptable excipient.

2. A pharmaceutical composition according to claim 1 , wherein the amount of said 5-HT7receptor antagonist is a complementary amount.

3. A pharmaceutical composition according to claim 1 , wherein the amount of said serotonin reuptake inhibitor is a complementary amount.

4. A pharmaceutical composition according to claim 1 , wherein said serotonin reuptake inhibitor is dapoxetine, citalopram, escitalopram, fluoxetine, fluvoxamine, sertraline, paroxetine, venlafaxine, vilazodone, duloxetine, nefazodone, imipramine, femoxetine, clomipramine, cericlamine, clovoxamine, cyanodothiepin, ifoxetine, indalpine, indeloxazine, litoxetine, milnacipran, tametraline, viqualine, or zimeldine, or a pharmaceutically acceptable salt thereof.

5. A pharmaceutical composition according to claim 1 , wherein said serotonin reuptake inhibitor is citalopram, sertraline, paroxetine, fluoxetine, or dapoxetine.

6. A pharmaceutical composition according to claim 1 , wherein said 5-HT7 receptor antagonist is 1-Benzyl-3-(4-chloro-phenyl)-1,4,5,6,7,8-hexahydro-1,2,6-triaza-azulene and said serotonin reuptake inhibitor is citalopram.

7. A method of treating a subject suffering from or diagnosed with a serotonin-mediated disease or condition, comprising administering to a subject in need of such treatment: a therapeutically effective amount of a 5-HT7 receptor antagonist, wherein said 5-HT7 receptor antagonist is selected from the group consisting of:

(R)-3-[2-[2-(4-Methylpiperidin-1-yl)ethyl]pyrrolidine-1-sulfonyl]phenol;

(R)-3,N-Dimethyl-N-[1-methyl-3-(4-methylpiperidin-1-yl)propyl]benzene sulfonamide;

R-(+)-1-(toluene-3-sulfonyl)-2-[2-(4-methylpiperidin-1-yl)ethyl]-pyrrolidine;

LY-215840;

2a-[4-4-phenyl-1,2,3,6-tetrahydropyridyl])-2a,3,4,5-tetrahydrobenzo[ed]-indol[(iH)-1;

Ensaculin;

S 23751;

Zopetine;

SB248709;

BTS 79018; and

1-Benzyl-3-(4-chloro-phenyl)-1,4,5,6,7,8-hexahydro-1,2,6-triaza-azulene;

and a therapeutically effective amount of a serotonin reuptake inhibitor, said amounts together providing an effective combined amount.

8. A method according to claim 7 , wherein the amount of said 5-HT7 receptor antagonist is a complementary amount.

9. A method according to claim 7 , wherein the amount of said serotonin reuptake inhibitor is a complementary amount.

10. A method according to claim 7 , wherein:

said serotonin reuptake inhibitor is a selective serotonin reuptake inhibitor;

the amount of said 5-HT7 receptor antagonist is an ameliorative amount;

and said 5-HT7 receptor antagonist is selected from the group consisting of:

(R)-3-[2-[2-(4-Methylpiperidin-1-yl)ethyl]pyrrolidine-1-sulfonyl]phenol;

(R)-3,N-Dimethyl-N-[1-methyl-3-(4-methylpiperidin-1-yl)propyl]benzene sulfonamide;

R-(+)-1-(toluene-3-sulfonyl)-2-[2-(4-methylpiperidin-1-yl)ethyl]-pyrrolidine;

LY-215840;

2a-[4-4-phenyl-1,2,3,6-tetrahydropyridyl])-2a,3,4,5-tetrahydrobenzo[ed]-indol[(iH)-1;

Ensaculin;

S 23751;

Zopetine;

SB248709;

BTS 79018; and

1-Benzyl-3-(4-chloro-phenyl)-1,4,5,6,7,8-hexahydro-1,2,6-triaza-azulene;

and pharmaceutically acceptable salts thereof.

11. The method according to claim 7 , wherein the disease or condition is selected from the group consisting of depression, anxiety, sleep or wake disturbances, and jet-lag.

12. A method according to claim 7 , wherein said disease or condition is depression or anxiety.

13. A method according to claim 7 , wherein said selective serotonin reuptake inhibitor is citalopram.

14. A method according to claim 13 , wherein said disease or condition is selected from the group consisting of depression, anxiety, sleep or wake disturbances, and jet-lag.

15. A method according to claim 13 , wherein said 5-HT7 receptor antagonist is 1-Benzyl-3-(4-chloro-phenyl)-1,4,5,6,7,8-hexahydro-1,2,6-triaza-azulene.