Design and In vitro Investigation of Grafted Chitosan as Chitosan Nanoparticles Containing Deflazacort Drug Coated by Calcium Starch Glycolate

The aim of the study is to formulate a modified release chitosan nanoparticles for the oral delivery of atorvastatin and to study the in vitro release of atorvastatin from chitosan nanoparticles. Atorvastatin-loaded chitosan nanoparticles were prepared with different concentration of cross-linking agent (glutaraldehyde) by emulsion interfacial reaction method. The formed nanoparticles were characterized in terms of size and morphological characteristics by scanning electron microscopy (SEM) and transmission electron microscope (TEM). Spherical and regular nanoparticles with the size range of 100-250nm were formed. Atorvastatin encapsulation efficiency of nanoparticles was found to be highest in ANP3, followed by ANP2 and ANP1. The in vitro release of atorvastatin was studied by membrane diffusion technique. The resulted cumulative percentage of drug released for ANP1, ANP2 and ANP3 were 60.08%, 34.81% and 20.39% respectively. Through this study, the nanoparticles preparation technique has shown to be a promising approach for enhancing the dissolution of hydrophobic drugs like atorvastatin calcium. The application of this novel delivery system offers good therapeutic potential in the management of hypercholesterolemia and dyslipidemia.

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Quality-by-Design Enabled Chitosan Nanoparticles for Antitubercular Therapy: Formulation, Statistical Optimization, and In vitro Characterization

Current Drug Therapy ◽

10.2174/1574885515666200722150305 ◽

2020 ◽

Vol 15 ◽

Author(s):

Manasi M. Chogale ◽

Sujay S. Gaikwad ◽

Savita P. Kulkarni ◽

Vandana B. Patravale

Keyword(s):

Side Effects ◽

Treatment Regimen ◽

Research Work ◽

Chitosan Nanoparticles ◽

In Vitro Release ◽

Antitubercular Therapy ◽

Prolonged Treatment ◽

High Dose ◽

Average Size

Background: Tuberculosis (TB) continues to be among the leading causes for high mortality among developing countries. Though a seemingly effective treatment regimen against TB is in place, there has been no significant improvement in the therapeutic rates. This is primarily owing to the high drug doses, their associated sideeffects, and prolonged treatment regimen. Discontinuation of therapy due to the severe side effects of the drugs results in the progression of the infection to the more severe drug-resistant TB. Objectives: Reformulation of the current existing anti TB drugs into more efficient dosage forms could be an ideal way out. Nanoformulations have been known to mitigate the side effects of toxic, high-dose drugs. Hence, the current research work involves the formulation of Isoniazid (INH; a first-line anti TB molecule) loaded chitosan nanoparticles for pulmonary administration. Methods: INH loaded chitosan nanoparticles were prepared by ionic gelation method using an anionic crosslinker. Drugexcipient compatibility was evaluated using DSC and FT-IR. The formulation was optimized on the principles of Qualityby-Design using a full factorial design. Results: The obtained nanoparticles were spherical in shape having an average size of 620±10.97 nm and zeta potential +16.87±0.79 mV. Solid state characterization revealed partial encapsulation and amorphization of INH into the nanoparticulate system. In vitro release study confirmed an extended release of INH from the system. In vitro cell line based safety and efficacy studies revealed satisfactory results. Conclusion: The developed nanosystem is thus an efficient approach for antitubercular therapy.

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Preparation and Evaluation of Chitosan Loaded Naproxen Nanoparticles by Emulsion Interfacial Reaction Method

Drug Delivery Letters ◽

10.2174/2210303109666190211150117 ◽

2019 ◽

Vol 9 (2) ◽

pp. 89-96

Author(s):

Abbaraju Krishna Sailaja ◽

Juveria Banu

Keyword(s):

Drug Release ◽

Interfacial Reaction ◽

Polymer Concentration ◽

Chitosan Nanoparticles ◽

Particle Diameter ◽

Entrapment Efficiency ◽

Reaction Method ◽

Release Data ◽

Mean Particle Diameter

Aim: The aim of this investigation was to develop and characterize naproxen loaded chitosan nanoparticles by emulsion interfacial reaction method. Methodology: For emulsion interfacial reaction method chitosan was used as a polymer. In this method, eight formulations were prepared by varying drug to polymer concentration. Discussion: Out of eight formulations prepared using emulsion interfacial reaction method EI8 formulation was found to be the best formulation. The drug content was observed as 94.4%, entrapment efficiency and loading capacity were found to be 87.5% and 75%, respectively. The mean particle diameter was measured as 324.6nm and the Zeta potential value was found to be -42.4mv. In vitro drug release data showed 97.2% of drug release rate sustained up to 12hrs. Conclusion: The results clearly reveal that EI8 formulation having the highest amount of drug was considered as the best formulation because of its small mean particle diameter, good entrapment efficiency, and stability.

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An In Vitro Investigation of Synergy or Antagonism between Antimicrobial Combinations against Isolates from Bacterial Keratitis

Investigative Opthalmology & Visual Science ◽

10.1167/iovs.09-4839 ◽

2010 ◽

Vol 51 (8) ◽

pp. 4151 ◽

Cited By ~ 26

Author(s):

Henri Sueke ◽

Stephen B. Kaye ◽

Timothy Neal ◽

Amanda Hall ◽

Stephen Tuft ◽

...

Keyword(s):

Bacterial Keratitis ◽

In Vitro Investigation ◽

Antimicrobial Combinations

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In‐vitro investigation of biophysical interactions between Ag(I) complexes of bis (methyl)(thia/selena) salen and ct‐DNA via multi‐spectroscopic, physicochemical and molecular docking methods along with cytotoxicity study

Luminescence ◽

10.1002/bio.4054 ◽

2021 ◽

Author(s):

Mamta Tripathi ◽

Syed Rabbani ◽

Stalin Antony ◽

Abdul Malik ◽

Rama Pande ◽

...

Keyword(s):

Molecular Docking ◽

In Vitro Investigation ◽

Biophysical Interactions ◽

Ct Dna

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Formulation of Quaternized Aminated Chitosan Nanoparticles for Efficient Encapsulation and Slow Release of Curcumin

Molecules ◽

10.3390/molecules26020449 ◽

2021 ◽

Vol 26 (2) ◽

pp. 449

Author(s):

Ahmed M. Omer ◽

Zyta M. Ziora ◽

Tamer M. Tamer ◽

Randa E. Khalifa ◽

Mohamed A. Hassan ◽

...

Keyword(s):

Slow Release ◽

Sodium Tripolyphosphate ◽

Chitosan Nanoparticles ◽

Gastric Fluid ◽

Release Profile ◽

Simulated Gastric Fluid ◽

Maximum Value ◽

Structure Surface ◽

Drug Encapsulation Efficiency

An effective drug nanocarrier was developed on the basis of a quaternized aminated chitosan (Q-AmCs) derivative for the efficient encapsulation and slow release of the curcumin (Cur)-drug. A simple ionic gelation method was conducted to formulate Q-AmCs nanoparticles (NPs), using different ratios of sodium tripolyphosphate (TPP) as an ionic crosslinker. Various characterization tools were employed to investigate the structure, surface morphology, and thermal properties of the formulated nanoparticles. The formulated Q-AmCs NPs displayed a smaller particle size of 162 ± 9.10 nm, and higher surface positive charges, with a maximum potential of +48.3 mV, compared to native aminated chitosan (AmCs) NPs (231 ± 7.14 nm, +32.8 mV). The Cur-drug encapsulation efficiency was greatly improved and reached a maximum value of 94.4 ± 0.91%, compared to 75.0 ± 1.13% for AmCs NPs. Moreover, the in vitro Cur-release profile was investigated under the conditions of simulated gastric fluid [SGF; pH 1.2] and simulated colon fluid [SCF; pH 7.4]. For Q-AmCs NPs, the Cur-release rate was meaningfully decreased, and recorded a cumulative release value of 54.0% at pH 7.4, compared to 73.0% for AmCs NPs. The formulated nanoparticles exhibited acceptable biocompatibility and biodegradability. These findings emphasize that Q-AmCs NPs have an outstanding potential for the delivery and slow release of anticancer drugs.

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