scholarly journals FORMULATION AND EVALUATION OF IMPLANTABLE DRUG DELIVERY SYSTEM OF TEMOZOLOMIDE BY USING HYDROPHILIC POLYMER

2017 ◽  
Vol 10 (11) ◽  
pp. 239
Author(s):  
Sindhu Vemula ◽  
Bhavya S ◽  
Suresh Kumar P ◽  
Jeyabaskaran M ◽  
Praveenkumar T ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Drug Delivery System ◽  
Delivery System ◽  
In Vitro Release ◽  
Hydrophilic Polymer ◽  
Short Term ◽  
Drug Content ◽  
Release Study ◽  
Vitro Release

  Objective: The present research study was carried out to formulate and evaluate the implants of temozolomide using hydrophilic polymer.Methods: Temozolomide implants were formulated using extrusion method with different grades of carbopol. The powdered blend was evaluated for micromeritic properties such as angle of repose, bulk density, tapped density, Carr’s index, and Hausner’s ratio. The formulated implants were analyzed for drug content uniformity, thickness, weight variation, and short-term stability study. In vitro release study of implants was performed using 0.1N hydrochloric acid, and it is maintained at 37°C±0.5°C.Results: In vitro release study demonstrated that the release rate of temozolomide from the implant matrix was a function of concentration of the polymer. As the concentration of polymer was increased, drug release from the matrix was extended. The release of drug from all implant formulations was found to be uniform and was extended over a period of 12 hrs. The implant formulations were found sterile, uniform in weight and size. The drug content was found to be in the range of 97.2-101.33%.Conclusion: Drug interaction studies revealed that there were no chemical interactions between temozolomide and polymers used in the study. Short-term stability studies of implants revealed that implants were stable, and there were no significant changes in the physical appearance and drug content of the implant formulations. The results of the study demonstrated that implantable drug delivery system of temozolomide can be formulated using hydrophilic polymer.

Nanocapsulation of Nitazoxanide in Solid Lipid Nanoparticles as a New Drug Delivery System and in vitro Release Study

2016 ◽  
Vol 16 (4) ◽  
pp. 120-127 ◽  
Author(s):  
Roghayeh Abbasalipo ◽  
Mohammad Fallah ◽  
Fruzan Sedighi ◽  
Amir Hossein Maghsood ◽  
Saman Javid
Keyword(s):  
Drug Delivery ◽  
Drug Delivery System ◽  
Delivery System ◽  
Solid Lipid Nanoparticles ◽  
In Vitro Release ◽  
Lipid Nanoparticles ◽  
Solid Lipid ◽  
Release Study ◽  
Vitro Release

Montmorillonite-Alginate Nanocomposites as a Drug Delivery System: Intercalation and In Vitro Release of Vitamin B1 and Vitamin B6

2009 ◽  
Vol 25 (2) ◽  
pp. 161-177 ◽  
Author(s):  
Bhavesh D. Kevadiya ◽  
Ghanshyam V. Joshi ◽  
Hasmukh A. Patel ◽  
Pravin G. Ingole ◽  
Haresh M. Mody ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Drug Delivery System ◽  
Delivery System ◽  
Vitamin B6 ◽  
In Vitro Release ◽  
Vitamin B1 ◽  
Vitro Release

scholarly journals In Vitro Release Mechanisms of Doxorubicin From a Clinical Bead Drug-Delivery System

2016 ◽  
Vol 105 (11) ◽  
pp. 3387-3398 ◽  
Author(s):  
Emelie Ahnfelt ◽  
Erik Sjögren ◽  
Per Hansson ◽  
Hans Lennernäs
Keyword(s):  
Drug Delivery ◽  
Drug Delivery System ◽  
Delivery System ◽  
In Vitro Release ◽  
Release Mechanisms ◽  
Vitro Release

An Investigation of the Release Properties of a Cationic Drug From a Hydrophobic Polyanhydride Matrix as a Function of Dissolution Medium

1998 ◽  
Vol 550 ◽  
Author(s):  
E. J. Ginsburg ◽  
T. D. Stultz ◽  
D. A. Stephens ◽  
D. Robinson ◽  
Y. Tian ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Drug Delivery System ◽  
Anion Exchange ◽  
Polymer Chain ◽  
Delivery System ◽  
In Vitro Release ◽  
Dissolution Medium ◽  
Poorly Soluble ◽  
Vitro Release

AbstractThe dissolution of a drug delivery system consisting of gentamicin sulfate in a hydrophobic polyanhydride matrix has been examined. The in vitro release of gentamicin is a function of the composition of the dissolution medium, with slower release in pH 7.4 buffer than in unbuffered water. This is consistent with an anion exchange taking place under conditions in which carboxylate polymer chain-ends form a poorly soluble salt with gentamicin, and sulfate is released into solution. Results of additional experiments probing this model are digeussed.

scholarly journals Drug delivery system and in vitro release of luteolin based on magnetic nanocomposite (Fe 3 O 4 @ZIF‐67)

2020 ◽  
Vol 15 (7) ◽  
pp. 425-429 ◽  
Author(s):  
Yuqiong Shi ◽  
Beibei Qiu ◽  
Xiangrong Wu ◽  
Yuxuan Wang ◽  
Jinhua Zhu ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Drug Delivery System ◽  
Delivery System ◽  
In Vitro Release ◽  
Magnetic Nanocomposite ◽  
Vitro Release

scholarly journals Preparation, characterization, and evaluation of antioxidant activity and bioavailability of a self-nanoemulsifying drug delivery system (SNEDDS) for buckwheat flavonoids

2020 ◽  
Vol 52 (11) ◽  
pp. 1265-1274
Author(s):  
Zhijuan Zhao ◽  
Xiaodong Cui ◽  
Xiaoli Ma ◽  
Zhuanhua Wang
Keyword(s):  
Drug Delivery ◽  
Antioxidant Activity ◽  
Drug Delivery System ◽  
Delivery System ◽  
Oral Bioavailability ◽  
In Vitro Release ◽  
Scavenging Activity ◽  
Vitro Release

Abstract The self-nanoemulsifying drug delivery system has shown many advantages in drug delivery. In this study, a self-nanoemulsifying drug delivery system of buckwheat flavonoids was prepared for enhancing its antioxidant activity and oral bioavailability. A nanoemulsion of buckwheat flavonoids was developed and characterized, and its antioxidant, in vitro release, and in vivo bioavailability were determined. The nanoemulsion was optimized by the central composite design response surface experiment, and its particle size, polymer dispersity index (PDI), zeta potential, morphology, encapsulation efficiency, and stability were evaluated. The antioxidant activity was tested by measuring its 2,2-diphenyl-1-picrylhydrazyl scavenging activity, hydroxyl radical scavenging activity, and superoxide anion scavenging ability. In vitro release of buckwheat flavonoids nanoemulsion showed a higher cumulative release than the suspension, and the release fitting model followed the Ritger–Peppas and Weibull models. The effective concentration of the nanoemulsion was evaluated in vivo using a Wistar rat model, and the area under the plasma concentration-time curve of the buckwheat flavonoids nanoemulsion was 2.2-fold higher than that of the buckwheat flavonoid suspension. The Cmax of the nanoemulsion was 2.6-fold greater than that of the suspension. These results indicate that the nanoemulsion is a promising oral drug delivery system that can improve the oral bioavailability to satisfy the clinical requirements.

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