Please use this identifier to cite or link to this item: http://hdl.handle.net/10603/3449
Title: Silver nanoparticles as drug delivery systems
Researcher: Deshpande, Raghunandan
Guide(s): Venkatarman, A
Yalagatti, Manjunath S
Keywords: Drug delivery systems
Silver nanoparticles
Nanotoxicology
Upload Date: 19-Apr-2012
University: Jawaharlal Nehru Technological University
Completed Date: January, 2011
Abstract: Advancement of treatment of diseases in pharmaceutical and medical field is the result of nanotechnology which is a burgeoning arena with myriad of prospects and possibilities. The amalgamation of this nanotechnology with biotechnology into controlled design of functional nanomaterials became possible, by mimicking nature, assuming that biological system is an organized network framed naturally with nanomaterials, and hence man-made nanostructures can become biocompatible. Encouraged by this philosophy, pathway of natural nanomaterial manufacturing and the properties offered by these, in our advanced research we have synthesized bio-shell-metal-core nanoparticles using different microorganisms, plant extract and bio-excretories as reducing agents. Treatment of different natural reducing agent with the aqueous solution of noble metal salt produced functionalized nanoparticles of core-shell morphology regulating the composition and dimension. The morphological studies of the biosynthesized nanoparticles are done using UV-vis, TEM, FESEM, & AFM techniques. The nanoparticles formation takes place within short time as the reaction is completed few minutes. The EDAX and XRD confirm the crystallinity of the particles. This green-clean synthetic process is conducted in natural environmental conditions. Possible mechanism of the biosynthesis is studied by FTIR and TGA. The stability studies of the colloidal nanoparticles solution are done using x zeta potential analyzers which confirm that the solution is stable for many weeks. Study of bio functionalized AgNP is done for in-vitro free-radical scavenging activity using DPPH method and antimicrobial studies are carried out on both gram positive and negative microbes. In free radical scavenging study, we observed that the AgNP mopped up the free radicals in dose dependent manner. These nanoparticles prove to be toxic against human pathogens and the effect of AgNP is concentration dependent and independent of the type of strains. In-vitro anti- malignant activity on four different cell lines is studied using functionalized AuNP. Both the microscopic and XTT study infer that the functionalized AuNP synthesized with aqueous clove bud extract showed a satisfactory anti-cancer effect on all the cell lines. Looking to the beneficial effect of cow urine as an anti-malignant agent, the preliminary studies with respect to it is submitted for potentization.
Pagination: xxvi, 187p.
URI: http://hdl.handle.net/10603/3449
Appears in Departments:Faculty of Pharmaceutical Sciences

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01_title.pdfAttached File150.84 kBAdobe PDFView/Open
02_declaration.pdf190.53 kBAdobe PDFView/Open
03_certificate.pdf192.9 kBAdobe PDFView/Open
04_acknowledgement.pdf187.86 kBAdobe PDFView/Open
05_dedication.pdf141.69 kBAdobe PDFView/Open
06_abstract.pdf185.13 kBAdobe PDFView/Open
07_contents.pdf158.39 kBAdobe PDFView/Open
08_list of tables figures & graphs.pdf342.05 kBAdobe PDFView/Open
09_list of notations.pdf212.14 kBAdobe PDFView/Open
10_chapter 1.pdf373.23 kBAdobe PDFView/Open
11_chapter 2.pdf394.85 kBAdobe PDFView/Open
12_chapter 3.pdf2.29 MBAdobe PDFView/Open
13_chapter 4.pdf1.6 MBAdobe PDFView/Open
14_chapter 5.pdf893.49 kBAdobe PDFView/Open
15_chapter 6.pdf239.58 kBAdobe PDFView/Open
16_list of patents & publications.pdf256 kBAdobe PDFView/Open


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