TY  - BOOK
AU  - Assem Mohamed Habib 154375
AU  - Rozana Akmal Kamal 150271
AU  - Mariam Magdy Aziz 153587
AU  - Salma Ahmed Khalifa 150747
TI  - Preparing of Cyclodextrin Polymeric Nanoparticles for Enhancing Drug  Bioavailability // GP // Dr. Eman Saddar // T.A. Heidi Ayman Mahmoud  (2018 - 2019)
U1  - 547  
PY  - 2019///
CY  - GIZA
PB  - MSA
KW  -  Cyclodextrin Polymeric Nanoparticles
KW  -  Enhancing Drug
KW  - Bioavailability
N1  - Pharmacy - Organic Chemistry
N2  - Rosuvastatin calcium is one of a statin medication, used to prevent cardiovascular disease in those at
high risk and treat abnormal lipids. It is a poorly soluble drug with oral bioavailability 20% due to
extensive first pass effect. The study aimed to formulate cyclo-dextrin loaded polyrotaxane
nanoparticles loaded with Rosuvastatin Calcium to improve its solubility, efficacy and reduce side
effects. The effects of polymers (PVP), cyclodextrin concentrations or their combinations at different
polymers ratios on the drug solubility dissolution rate was studied.
The Experimental studies: Polyrotaxane was prepared by dissolving drug, PVP and
cyclodextrane all together. The mixture was cooled for 24 hour to allow precipitation of drug-
polyrotaxane powder, then dried at at 40 oC for 24 hours. The dried powdered was weighted. The drug
content of polyrotaxane was determined. 0.05 g of the prepared polyrotaxane was dissolved in 10 ml
methanol, to guarantee complete drug solubility. The drug concentration was measured
spectrophotometrically at wavelength 243nm. The dissolution test used to compare between the poorly
soluble rosuvastatin drug and polyrotaxane. Differential scanning calorimetry test used to concern with
the measurement of energy acquired or emitted by a sample of matter when it is heated or cooled. It
also provides information about endothermic and exothermic processes. X- Ray powder diffraction is a
technique that utilizes x- ray scattering pointed on crystals of powder to give identity and information
about the crystalline structure.
The Results: The powder weight was 2.8gm presents 22.85 % yield. Five mg of polyrotaxane
contains 3.575 mg pure drug (71.5% drug loading and 1%.encapsulation efficiency. Polyrotaxane
complex enhance both drug solubility and dissolution
UR  - https://drive.google.com/file/d/1bvtCdkpfdcizPa25GxUESFBJs8XY4kcg/view
ER  -