Abstract
Silver nanoparticles (AgNPs) are gaining interest in medical applications for their prominent antibacterial and antimicrobial potentials. AgNPs possess remarkable anti-inflammatory and antioxidant activities and enhances wound healing. The main objective of the current study was to investigate the therapeutic effect of administration of AgNPs on cisplatin (CP) induced pulmonary inflammation in rats. Sixty male albino rats were used in this study. Rats were divided into 6 groups (n=10). Group I control group. Group II and III control groups received AgNPs at doses (5 and 10 ppm). Group IV CP group received CP (2.5 mg/kg). Group V and VI CP group received AgNPs (5, and 10 ppm). All doses were administered intraperitoneally once a day for 4 weeks. Oxidative stress and antioxidant status, inflammatory mediators, fibrogenic as well as apoptotic markers were determined in lung tissues. The results revealed that rats treated with CP showed remarkable elevation in lung tissues MDA, TNF-alpha, IFN-gamma, IL-6, CRP, Fibrinogen and P53 levels associated with depression in SOD, GSH and CAT activities. However, administration of AgNPs (5 or 10 ppm) to CP group resulted in significant amelioration of the aforementioned parameters in a dose dependent manner. Histopathological investigation of lung tissues of CP group demonstrated disruption of normal lung architecture and lung injury. However, treatment with AgNPs revealed significant improvement in lung tissue against CP-induced inflammatory changes and lung tissue damage. It could be concluded that AgNPs exert potent cytoprotective effects via combating oxidative stress, inflammation, fibrogenic and apoptotic markers and repairing histopathological changes in lung tissues.