The Effects of doxorubicin containing poly (sebacic anhydride) nanocapsules on glutathione s-transferase activity

Download
2015
Çokça, Ceren
Nanocapsules are used as drug delivery system commonly. Poly (sebacic anhydride) is a good candidate for the nanocapsule preparation since they are ideal for controlled release application with respect to biocompatibility, low cost, and the approval by US Food and Drug Administration (FDA). The overactivity of glutathione S-transferase is generally related with the resistance of chemotherapy and this problem can be overcome through drug delivery systems. In this study, poly (sebacic anhydride) - poly (ethylene glycol) copolymer with the molecular weight of 5202 g/mol was synthesized successfully. In addition, doxorubicin loaded nanocapsules form this copolymer were prepared properly and the size of these nanocapsules were 200 nm approximately. The loading efficiency of these nanocapsules is 71.9%. The realese study indicated that these nanocapsules follows sustain drug release profile. Moreover, the effect of these nanocapsules on glutathione S-tranferase activity was examined and almost 60% inhibiton on the ezyme activity was observed.

Suggestions

The Antiproliferative Effect of Celecoxib Loaded pNIPAM Nanoparticles
Bayyurt, Banu; Hasırcı, Vasıf Nejat (2012-09-01)
The aim of this study was to design a drug delivery system based on poly(N-isopropylacrylamide) (pNIPAM) nanoparticles (NPs). The model drug, Celecoxib, is a cyclooxygenase-2 inhibitor and has a great potential in chemoprevention and treatment of various cancer types, however, the clinical use is limited due to the side effects on the cardiovascular system which is most probably due to the high doses used in clinical applications. In this study, a novel nanoparticle preparation approach, nanoprecipitation, ...
UV responsive drug delivery from suprofen incorporated liposomes
Demirbağ, Birsen; Hasırcı, Vasıf Nejat; Hasırcı, Nesrin; Department of Biotechnology (2011)
Drug delivery systems are designed to achieve low, local doses at the target site. Delivery systems can provide the drug in a continuous manner or in response to environmental stimuli such as temperature, pH or UV. This study aimed to develop photosensitive liposomes that achieve UV-responsive release of their content. The main mechanism was to incorporate a light sensitive molecule into the liposomal bilayer then achieve destabilization of the membrane by exposure to UV. This would result in an on demand r...
Preparation of chitosan-polyvinylpyrrolidone microspheres and films for controlled release and targeting of 5-fluorouracil
Özerkan, Taylan; Hasırcı, Nesrin; Department of Polymer Science and Technology (2007)
Controlled drug delivery systems deliver drugs at predetermined rates for extended periods. Although there are various types such as capsules, tablets etc, micro and nano spheres are the most commonly used systems. In this study, a set of chitosan-polyvinylpyrrolidone (CH-PVP) microspheres containing different amounts of polyvinylpyrrolidone as semi inter penetrating networks (semi-IPN) were prepared as controlled release systems. Emulsification method was applied for the preparation of microspheres and som...
Antinociceptive effects of hydromorphone, bupivacaine and biphalin released from PLGA polymer after intrathecal implantation in rats
Sendil, D; Bonney, IM; Carr, DB; Lipkowski, AW; Wise, DL; Hasırcı, Vasıf Nejat (2003-05-01)
Intraspinal drug delivery, based on the concept of controlling pain by delivering drug to a nociceptive target rich in opioid and other relevant receptors is increasingly used clinically. The therapeutic ratio for opioids or other centrally acting agents is potentially greater if they are administered intrathecally (i.t.) than outside the central nervous system (CNS). The present study was designed with the ultimate goal of formulating a controlled release system for intrathecal analgesia characterized by e...
Synthesis and Cytoxicity of a TAT Peptide Doxorubicin Conjugate for Breast Cancer Treatment
Gülseren Petek, Şen; Yalçın Azarkan, Serap; Gündüz, Ufuk (JSciMed Central, 2015-01-01)
The TAT peptide is a drug delivery tools which has been efficiently proven to deliver drugs, peptides and nucleic acids. A specific sequence of HIV1 protein transduction domain TAT was evaluated for its ability to carry Doxorubicin (Dox) into drug resistant MCF-7 tumor cells. TAT was conjugated to Dox via the formation of a disulfide bond. In this study, we developed an optimal formulation for the conjugation of Dox by this delivery system for tumor treatment. The in vitro study showed that DoxTAT peptide c...
Citation Formats
C. Çokça, “The Effects of doxorubicin containing poly (sebacic anhydride) nanocapsules on glutathione s-transferase activity,” M.S. - Master of Science, Middle East Technical University, 2015.