Antimicrobial cationic peptides and formulations thereof

1. A composition comprising an antimicrobial cationic peptide of up to 35 amino acids comprising 11B7CN (SEQ ID NO: 23) at a concentration ranging from about 0.01% (w/w) to about 10% (w/w), a viscosity-increasing agent, a solvent, and at least one additional antimicrobial cationic peptide or antimicrobial agent;

wherein the solvent comprises water and glycerin;

wherein the viscosity-increasing agent is hydroxyethyl cellulose at a concentration of about 0.5% (w/w) to about 5% (w/w); and

wherein the composition is a gel.

2. The composition according to claim 1 , wherein the additional antimicrobial cationic peptide is 11B32CNR (SEQ ID NO: 33), 11B36CN (SEQ ID NO: 34), 11F4CN (SEQ ID NO: 58), 11F5CN (SEQ ID NO: 60), 11F12CN (SEQ ID NO: 62), 11F17CN (SEQ ID NO: 63), 11F50CN (SEQ ID NO: 64), 11F56CN (SEQ ID NO: 65), 11F63CN (SEQ ID NO: 66), 11F64CN (SEQ ID NO: 67), 11F66CN (SEQ ID NO: 68), 11F67CN (SEQ ID NO: 69), 11F68CN (SEQ ID NO: 70), 11F93CN (SEQ ID NO: 71), 11J02CN (SEQ ID NO: 98), 11J02ACN (SEQ ID NO: 99), 11J30CN (SEQ ID NO: 100), 11J36CN (SEQ ID NO: 101), 11J58CN (SEQ ID NO: 103), Nt-acryloyl-11B7CN (SEQ ID NO: 119), Nt-glucosyl-11J36CN (SEQ ID NO: 120) or Nt-glucosyl-11J38CN (SEQ ID NO: 121).

3. The composition according to claim 1 , wherein the additional antimicrobial agent is an antibacterial agent, an antibiotic agent, an anti-fungal agent, an anti-viral agent or an anti-parasitic agent.

4. The composition according to claim 3 , wherein the antibacterial agent is a penicillin, a cephalosporin, a carbacephem, a cephamycin, a carbapenem, a monobactam, an aminoglycoside, a glycopeptide, a quinolone, a tetracycline, a macrolide or a fluoroquinolone.

5. The composition according to claim 3 , wherein the antibiotic agent is Penicillin G (CAS Registry No.: 61-33-6); Methicillin (CAS Registry No.: 61-32-5); Nafcillin (CAS Registry No.: 147-52-4); Oxacillin (CAS Registry No.: 66-79-5); Cloxacillin (CAS Registry No.: 61-72-3); Dicloxacillin (CAS Registry No.: 3116-76-5); Ampicillin (CAS Registry No.: 69-53-4); Amoxicillin (CAS Registry No.: 26787-78-0); Ticarcillin (CAS Registry No.; 34787-01-4); Carbenicillin (CAS Registry No.: 4697-36-3); Mezlocillin (CAS Registry No.: 51481-65-3); Azlocillin (CAS Registry No.: 37091-66-0); Piperacillin (CAS Registry No.: 61477-96-1); Imipenem (CAS Registry No.: 74431-23-5); Aztreonam (CAS Registry No.: 78110-38-0); Cephalothin (CAS Registry No.: 153-61-7); Cefazolin (CAS Registry No.:25953-19-9); Cefaclor (CAS Registry No.: 70356-03-5); Cefamandole formate sodium (CAS Registry No.: 42540-40-9); Cefoxitin (CAS Registry No.: 35607-66-0); Cefuroxime (CAS Registry No.: 55268-75-2); Cefonicid (CAS Registry No.: 61270-58-4); Cefinetazole (CAS Registry No.: 56796-20-4); Cefotetan (CAS Registry No.: 69712-56-7); Cefprozil (CAS Registry. No.: 92665-29-7); Lincomycin (CAS Registry No.: 154-21-2); Linezolid (CAS Registry No.: 165800-03-3); Loracarbef (CAS Registry No.: 121961-22-6); Cefetamet (CAS Registry No.: 65052-63-3); Cefoperazone (CAS Registry No.: 62893-19-0); Cefotaxime (CAS Registry No.: 63527-52-6); Ceftizoxime (CAS Registry. No.: 68401-81-0); Ceftriaxone (CAS Registry No.: 73384-59-5); Ceftazidime (CAS Registry No.: 72558-82-8) ; Cefepime (CAS Registry No.: 88040-23-7); Cefixime (CAS Registry No.: 79350-37-1); Cefpodoxime (CAS Registry No.: 80210-62-4); Cefsulodin (CAS Registry No.: 62587-73-9); Fleroxacin (CAS Registry No.: 79660-72-3); Nalidixic acid (CAS Registry No.: 389-08-2); Norfloxacin (CAS Registry No.: 70458-96-7); Ciprofloxacin (CAS Registry No.: 85721-33-1); Ofloxacin (CAS Registry No.: 82419-36-1); Enoxacin (CAS Registry No.: 74011-58-8); Lomefloxacin (CAS Registry No.: 98079-51-7); Cinoxacin (CAS Registry No.: 28657-80-9); Doxycycline (CAS Registry No.: 564-25-0); Minocycline (CAS Registry No.: 10118-90-8); Tetracycline (CAS Registry No.: 60-54-8); Amikacin (CAS Registry No.: 37517-28-5); Gentamicin (CAS Registry No.: 1403-66-3); Kanamycin (CAS Registry No.: 8063-07-8); Netilmicin (CAS Registry No.: 56391-56-1); Tobramycin (CAS Registry No.: 32986-56-4); Streptomycin (CAS Registry No.: 57-92-1); Azithromycin (CAS Registry No.: 83905-01-5); Clarithromycin (CAS Registry No.: 81103-1 1 -9); Erythromycin (CAS Registry No.: 114-07-8); Erythromycin estolate (CAS Registry No.: 3521-62-8); Erythromycin ethyl succinate (CAS Registry No.: 41342-53-4); Erythromycin glucoheptonate (CAS Registry No.: 23067-13-2); Erythromycin lactobionate (CAS Registry No.: 3847-29-8); Erythromycin stearate (CAS Registry No.: 643-22-1); Vancomycin (CAS Registry No.: 1404-90-6); Teicoplanin (CAS Registry No.: 61036-64-4); Chloramphenicol (CAS Registry No.: 56-75-7); Clindamycin (CAS Registry No.: 18323-44-9); Trimethoprim (CAS Registry No.: 738-70-5); Sulfamethoxazole (CAS Registry No.: 723-46-6); Nitrofurantoin (CAS Registry No.: 67-20-9); Rifampin (CAS Registry No.: 13292-46-1); Mupirocin (CAS Registry No.: 12650-69-0); Metronidazole (CAS Registry No.: 443-48-1); Cephalexin (CAS Registry No.: 15686-71-2); Roxithromycin (CAS Registry No.: 80214-83-1); Co-amoxiclavuanate; a combination of Piperacillin and Tazobactam, or a salt, acid, base, or other derivative of any of these.

6. The composition according to claim 3 , wherein the anti-fungal agent is terbinafine hydrochloride, nystatin, amphotericin B, griseofulvin, ketoconazole, miconazole nitrate, flucytosine, fluconazole, itraconazole, clotrimazole, benzoic acid, salicylic acid or selenium sulfide.

7. The composition according to claim 3 , wherein the anti-viral agent is amantadine hydrochloride, rimantadin, acyclovir, famciclovir, foscarnet, ganciclovir sodium, idoxuridine, ribavirin, sorivudine, trifluridine, valacyclovir, vidarabin, didanosine, stavudine, zalcitabine, zidovudine, interferon alpha or edoxudine.

8. The composition according to claim 3 , wherein the anti-parasitic agent is pirethrins/piperonyl butoxide, permethrin, iodoquinol, metronidazole, diethylcarbamazine citrate, piperazine, pyrantel pamoate, mebendazole, thiabendazole, praziquantel, albendazole, proguanil, quinidine gluconate injection, quinine sulfate, chloroquine phosphate, mefloquine hydrochloride, primaquine phosphate, atovaquone, co-trimoxazole (sulfamethoxazole/trimethoprim) or pentamidine isethionate.

9. The composition according to claim 1 , wherein the concentration of 11B7CN (SEQ ID NO: 23) is in a range from about 1% (w/w) to about 3% (w/w).

10. The composition according to claim 1 , wherein the concentration of 11B7CN (SEQ ID NO: 23) is in a range from about 2.5% (w/w) to about 3.5% (w/w).

11. The composition according to claim 1 , wherein the hydroxyethyl cellulose is at a concentration of about 1% (w/w) to about 3% (w/w).

12. The composition according to claim 11 , wherein hydroxyethyl cellulose is at a concentration of about 1% (w/w) to about 2% (w/w).

13. The composition according to claim 1 , wherein the concentration of glycerin in the solvent is up to about 20% (w/w).

14. The composition according to claim 1 , wherein the concentration of glycerin in the solvent is in a range of about 9% (w/w) to about 11% (w/w).

15. The composition according to claim 1 , wherein the composition has a pH ranging from about 3.5 to about 7.