نتایج جستجو برای: tpgs

تعداد نتایج: 269  

2017
Youwen Zhang Deyin Tong Daobiao Che Bing Pei Xiaodong Xia Gaofeng Yuan Xin Jin

The roles of ginsenoside compound K (CK) in inhibiting tumor have been widely recognized in recent years. However, low water solubility and significant P-gp efflux have restricted its application. In this study, CK ascorbyl palmitate (AP)/d-α-tocopheryl polyethylene glycol 1000 succinate monoester (TPGS) mixed micelles were prepared as a delivery system to increase the absorption and targeted a...

2015
Sarra Abbad Cheng Wang Ayman Yahia Waddad Huixia Lv Jianping Zhou

Herein, we describe the preparation of a targeted cellular delivery system for morin hydrate (MH), -molecular-weight hyaluronic acid-poly(butyl cyanoacrylate) (HA-PBCA) block copolymer. In ord the therapeutic effect of MH, D-alpha-tocopheryl polyethylene glycol 1000 succinate (TPGS) was HA-PBCA during the preparation process. The MH-loaded HA-PBCA “plain” nanoparticle (MH-P PBCA/TPGS “mixed” na...

Journal: :Journal of biomedical materials research. Part A 2008
H Z Zhao E C Tan L Y L Yung

D-alpha-tocopheryl polyethylene glycol succinate (TPGS) has been utilized in numerous drug delivery formulations in recent years. Because of its amphiphilic structure, it can be used as emulsifier and vehicle for lipid-based drug delivery formulations. It is also an effective P-glycoprotein (P-gp) inhibitor. However, TPGS represents only one of the surfactants in the class of "Vitamin-PEG" conj...

2013
Wen-Ling Chan Wen-Kuang Yang Hsien-Da Huang Jan-Gowth Chang

RNA interference (RNAi) is a gene silencing process within living cells, which is controlled by the RNA-induced silencing complex with a sequence-specific manner. In flies and mice, the pseudogene transcripts can be processed into short interfering RNAs (siRNAs) that regulate protein-coding genes through the RNAi pathway. Following these findings, we construct an innovative and comprehensive da...

2013
Subhasish Mondal Partha Roy Suvadra Das Asim Halder Arup Mukherjee Tanmoy Bera

Visceral leishmaniasis (VL) is a chronic protozoan infection in humans associated with significant global morbidity and mortality. There is an urgent need to develop drugs and strategy that will improve therapeutic response for effective clinical treatment of drug resistant VL. To address this need, andrographolide (AG) nanoparticles were designed with P-gp efflux inhibitor vitamin E TPGS (D-α-...

2015
Christiana M. Neophytou Andreas I. Constantinou

Vitamin E isoforms have been extensively studied for their anticancer properties. Novel drug delivery systems (DDS) that include liposomes, nanoparticles, and micelles are actively being developed to improve Vitamin E delivery. Furthermore, several drug delivery systems that incorporate Vitamin E isoforms have been synthesized in order to increase the bioavailability of chemotherapeutic agents ...

Journal: :the iranian journal of pharmaceutical research 0
abdolhamid parsa 1- department of pharmaceutics, school of pharmacy, shahid beheshti university of medical sciences, tehran, iran. 2- student research committee, shahid beheshti university of medical sciences, tehran, iran. roonak saadati department of pharmaceutics, school of pharmacy, shahid beheshti university of medical sciences, tehran, iran. zahra abbasian department of pharmaceutics, school of pharmacy, shahid beheshti university of medical sciences, tehran, iran. saeed azad aramaki clinical laboratory section, khatamolanbia hospital, tehran, iran. simin dadashzadeh 1- department of pharmaceutics, school of pharmacy, shahid beheshti university of medical sciences, tehran, iran. 2- pharmaceutical sciences research center, shahid beheshti university of medical sciences, tehran, iran.

etoposide, a widely used anticancer drug, exhibits low and variable oral bioavailability mainly because of being substrate for the efflux transporter, p-glycoprotein (p-gp). therefore, the present study was aimed to investigate the effect of d-α-tocopherol polyethylene glycol 1000 succinate (tpgs) and peg 400 as p-gp inhibitors on the intestinal absorption of etoposide. everted sacs of rat smal...

2014
Hyun-Jong Cho Jin Woo Park In-Soo Yoon Dae-Duk Kim

Docetaxel is a potent anticancer drug, but development of an oral formulation has been hindered mainly due to its poor oral bioavailability. In this study, solid lipid nanoparticles (SLNs) surface-modified by Tween 80 or D-alpha-tocopheryl poly(ethylene glycol 1000) succinate (TPGS 1000) were prepared and evaluated in terms of their feasibility as oral delivery systems for docetaxel. Tween 80-e...

2013
Yunni Yu Songwei Tan Shuang Zhao Xiangting Zhuang Qingle Song Yuliang Wang Qin Zhou Zhiping Zhang

Docetaxel (DTX) has excellent efficiency against a wide spectrum of cancers. However, the current clinical formulation has limited its usage, as it causes some severe side effects. Various polymeric nanoparticles have thus been developed as alternative formulations of DTX, but they have been mostly fabricated on a laboratory scale. Previously, we synthesized a novel copolymer, poly(lactide)-D-α...

2001
Vlado Vorisek

Register Transfer Level Vladimir Vorisek Institute of Informatics, Slovak Academy of Sciences [email protected] Abstract The poster presents Ph.D. thesis in the area of Test Pattern Generators (TPGs) for application in distributed and embedded Built-In Self-Test (BIST). The goal of this work is to develop a general scheme of designing built-in TPGs for basic arithmetic elements such as adders...

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