(12) Patent Application Publication (10) Pub. No.: US 2017/0071884 A1 Page Et Al
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US 2017.007 1884A1 (19) United States (12) Patent Application Publication (10) Pub. No.: US 2017/0071884 A1 Page et al. (43) Pub. Date: Mar. 16, 2017 (54) METHODS FOR TREATING BACTERIAL (30) Foreign Application Priority Data INFECTIONS May 1, 2013 (AU) ................................ 201390.1517 (71) Applicant: Neoculi Pty Ltd., Burwood (AU) Publication Classification (72) Inventors: Stephen Page, Newton (AU); Sanjay (51) Int. Cl Garg, Adelaide (NZ) A6II 3/55 (2006.01) A6IR 9/00 (2006.01) (21) Appl. No.: 15/363.523 (52) U.S. Cl. CPC .......... A61K 31/155 (2013.01); A61K 9/0014 (22) Filed: Nov. 29, 2016 (2013.01); A61K 9/0053 (2013.01) (57) ABSTRACT Related U.S. Application Data The invention comprises methods for treating and prevent (63) Continuation of application No. 14/888.289, filed on ing a bacterial infection in a Subject, methods for preparing Oct. 30, 2015, now Pat. No. 9,539,223, filed as a medication for use in treating and preventing a bacterial application No. PCT/AU2014/000480 on May 1, infection in a subject, and pharmaceutical and Veterinary 2014. antibacterial compositions when used therein. Patent Application Publication Mar. 16, 2017. Sheet 1 of 31 US 2017/0071884 A1 888 estig - 888; 8.8:3 s: 8 ses: 2 8s: : s:s: 2 aara Sagi, stress 8& 8 8. xx 33. ... ... Figtre : Patent Application Publication Mar. 16, 2017. Sheet 2 of 31 US 2017/0071884 A1 I ::::::::::::::::::::: i 8:88:88-838: ------'os-osssssssssss------------ $3:8: 3 ::::::: 838.3383 Aaaaaaaaaaaa- 88:8x. '',3:3: :...: 88:3388M-NMWowows'-ow'ssesssssssooooooo-o-o- 838.33: & 3333 w woxxess----------------- igire 2 Patent Application Publication Mar. 16, 2017. Sheet 3 of 31 US 2017/0071884 A1 Patent Application Publication Mar. 16, 2017. 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Recently MRSA strains have become host-adapted in several key TECHNICAL FIELD animal species including livestock, horses and companion 0001. This invention relates to methods of treating and animals and regular cases of human-to-animal and animal preventing a bacterial infection in a subject, methods for to-human transfer are being documented. This has important preparing a medicament for use in treating and preventing a consequences for strain transmission and public health. A bacterial infection in a Subject, and pharmaceutical and recent survey of 751 Australian veterinarians for MRSA nasal carriage found that a remarkable 21.4% of equine veterinary antibacterial compositions when used therein. veterinarians were MRSA-positive compared to 4.9% of BACKGROUND ART small animal veterinarians and 0.9% of veterinarians with little animal contact. These ecological shifts of MRSA 0002. A marked increase in prevalence of multi-drug together with the emergence of resistance to new drugs resistance in disease-causing Gram-positive (G+ve) developed specifically for MRSA such as linezolid confirm (Staphylococcus aureus, Enterococcus spp. and Streptococ that new MRSA anti-infectives are urgently needed. Fur cus pneumoniae) and Gram negative (G-ve) pathogens thermore, hospitals that use Vancomycin for treating MRSA (Escherichia coli, Enterobacter spp., Salmonella spp., then have to contend with outbreaks of Vancomycin-resistant Acinetobacter baumanni, Klebsiella pneumoniae and enterococci (VRE) infections in their patients, once again Pseudomonas aeruginosa) has coincided with an unprec with limited alternative antimicrobial choices. edented global decline in investment in new anti-infective drugs. There are few currently registered alternatives for 0006. The global emergence and spread within the com multidrug resistant (MDR) bacterial infections, forcing cli munity of highly virulent MDR Gram-negative (G-ve) nicians to consider older generation drugs such as colistin bacteria such as E. coli O25b:ST131 confirms that bacterial with narrow spectrum and considerable potential for toxic pathogens can simultaneously evolve both virulence and side-effects. In addition, there are fewer novel classes of resistance determinants. Echoing recent MRSA epidemiol antiinfective therapeutics moving through the drug devel ogy, E. coli O25b:ST131, a major cause of urinary tract and opment pipeline. bloodstream