Evaluation of the analgesic and anesthetic properties of silver nanoparticles supported over biodegradable acacia gum-modified magnetic nanoparticles

Abstract

Abstract An ecofriendly and green procedure was adopted to immobilize Ag NPs over acacia gum (GA)-modified magnetic nanoparticles (Fe3O4-GA/Ag NPs) with analgesic and anesthetic properties. In the stepwise modification method, the pre-synthesized Fe3O4 NPs were coated by the gum acacia (GA) that has hydroxyl groups on its backbone and can be used for as a capping, reducing, and stabilizing agent for immobilized Ag nanoparticles. The capped Ag ions were reduced and immobilized over the acacia gum because of hydrogen bonding of the hydroxyl groups. The final bio-material was characterized by various analytical techniques such as X-ray diffraction, energy dispersive X-ray spectroscopy, inductively coupled plasma-optical emission microscope, transmission electron microscopy, field emission scanning electron microscopy, and fourier transformed infra red spectroscopy. In the in vivo design, the results of anesthetic activity indicated that the Fe3O4-GA/Ag NPs made local anesthetic effects in guinea pig and frog models. After oral administration of Fe3O4-GA/Ag NPs, paw edema was significantly decreased in mice. Acetic acid-induced writhing episodes were dose-dependently and significantly decreased in all groups treated with Fe3O4-GA/Ag NPs. In addition, the analgesic and anti-inflammatory properties were determined in several doses of Fe3O4-GA/Ag NPs. The above results protect the analgesic and anesthetic properties of silver nanoparticles supported over biodegradable acacia gum-modified magnetic nanoparticles for the next research or clinical trial studies in human.