Bioengineered ciprofloxacin loaded chitosan nanoparticles for the treatment of Bovine Mastitis

Mastitis is the most devastating economic disease of dairy cattle. Mastitis in dairy cattle frequently occurs during the dry period or in early lactation. E. coli. and S. aureus is the main causative agent of mastitis. S. aureus has an ability to form encapsulated focuses in the udder and develop subclinical form of mastitis. This property of bacteria hinders the effective cure during lactation period. Antibiotics used for treatments have a short half-life span at the site of action because of frequent milking, therefore unable to maintain desired drug concentration for effective clearance of bacteria. We demonstrated the potential of ciprofloxacin encapsulated nanocarriers which can improve availability of drugs and could provide effective means of the treatment of mastitis. These drug loaded nanoparticles show low toxicity & slow clearance from the site of action. Antimicrobial studied against clinical strain of E.coli. and Staphylococcus aureus zone of inhibition depend on dose 0.5 mg to 2 mg/ml nanoparticles solution from 11.6 to 14.5 mm and 15 to 18mm. These nanoparticles show good antimicrobial activity in broth culture as well against bacteria.