Preparation and characterisation of a soy lecithin‐based self‐microemulsifying drug delivery system of resveratrol

2014 ◽  
Vol 9 (9) ◽  
pp. 561-565 ◽  
Author(s):  
Liu Guoqing ◽  
Zhou Huafeng ◽  
Zhang Jing ◽  
Yan Zemin ◽  
Duan Mingxing ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Drug Delivery System ◽  
Delivery System ◽  
Soy Lecithin

scholarly journals A Study on Entrapment Efficiency of Earthworms (Lumbricus rubellus) Extract in the Ethosomal Drug Delivery System

2017 ◽  
Vol 1 (1) ◽  
pp. 32
Author(s):  
Sabrina Resky Pratiwi ◽  
Nur Ainiah ◽  
Hardyanti Hardyanti ◽  
Dini Rusdayanti Putri ◽  
Emilia Utomo
Keyword(s):  
Drug Delivery ◽  
Drug Delivery System ◽  
Delivery System ◽  
Ethanol Concentration ◽  
Entrapment Efficiency ◽  
Polar Compounds ◽  
Lumbricus Rubellus ◽  
Active Protein ◽  
Soy Lecithin ◽  
Antibacterial Compounds

IntroductionEarthworms (Lumbricus rubellus) extract is known to contain  bioactive protein as antibacterial compounds. One of the disadvantages of polar compounds is slow penetration into the skin layers which can be solved by formulating it in the form of ethosomal drug delivery system. The aims of this research was to get information about ethanol concentration that can give the highest entrapment efficiency of the ethosome. MethodsEarthworms powder was macerated using 50% ethanol for 3 days. The extract was  formulated into ethosome with variation of ethanol concentration that are 20%, 30%, 40%, and 50%, respectively. The measurement of entrapment efficiency was conducted by measuring the amount of active protein of earthworms extract that was entrapped in ethosome vesicles using spectrophotometer UV-Visible.ResultsThe results showed that the highest entrapment efficiency was 72.58 % performed by formula which was made with 0.5 % extract, 2 % soy lecithin and 50 % ethanol.ConclusionsThe highest percentage of entrapment efficiency of earthworms extract ethosome was 72.58%.Keywords : ethosome, ethanol concentration , entrapment efficiency, Lumbricus rubellus.  

Hexosomes based on cholesterol and phosphatidylcholine: a new drug delivery system for curcumin release

Planta Medica ◽  
2015 ◽  
Vol 81 (16) ◽  
Author(s):  
AR Bilia ◽  
G Capecchi ◽  
MC Salvatici ◽  
B Isacchi ◽  
MC Bergonzi
Keyword(s):  
Drug Delivery ◽  
Drug Delivery System ◽  
Delivery System ◽  
New Drug

Development and Evaluation of Floating Pulsatile Drug Delivery System Using Meloxicam

2017 ◽  
Vol 7 (04) ◽  
Author(s):  
ShirishaG. Suddala ◽  
S. K. Sahoo ◽  
M. R. Yamsani
Keyword(s):  
Rheumatoid Arthritis ◽  
Drug Delivery ◽  
Drug Release ◽  
Drug Delivery System ◽  
Delivery System ◽  
Lag Time ◽  
Oral Dosage ◽  
Lag Phase ◽  
Pulsatile Drug Delivery

Objective: The objective of this research work was to develop and evaluate the floating– pulsatile drug delivery system (FPDDS) of meloxicam intended for Chrono pharmacotherapy of rheumatoid arthritis. Methods: The system consisting of drug containing core, coated with hydrophilic erodible polymer, which is responsible for a lag phase for pulsatile release, top cover buoyant layer was prepared with HPMC K4M and sodium bicarbonate, provides buoyancy to increase retention of the oral dosage form in the stomach. Meloxicam is a COX-2 inhibitor used to treat joint diseases such as osteoarthritis and rheumatoid arthritis. For rheumatoid arthritis Chrono pharmacotherapy has been recommended to ensure that the highest blood levels of the drug coincide with peak pain and stiffness. Result and discussion: The prepared tablets were characterized and found to exhibit satisfactory physico-chemical characteristics. Hence, the main objective of present work is to formulate FPDDS of meloxicam in order to achieve drug release after pre-determined lag phase. Developed formulations were evaluated for in vitro drug release studies, water uptake and erosion studies, floating behaviour and in vivo radiology studies. Results showed that a certain lag time before drug release which was due to the erosion of the hydrophilic erodible polymer. The lag time clearly depends on the type and amount of hydrophilic polymer which was applied on the inner cores. Floating time and floating lag time was controlled by quantity and composition of buoyant layer. In vivo radiology studies point out the capability of the system of longer residence time of the tablets in the gastric region and releasing the drug after a programmed lag time. Conclusion: The optimized formulation of the developed system provided a lag phase while showing the gastroretension followed by pulsatile drug release that would be beneficial for chronotherapy of rheumatoid arthritis and osteoarthritis.

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