Volume 16

April-June 2024

Review Articles

Chinmaya Keshari Sahoo, Subhashree Mishra, Amiyakanta Mishra

Abstract: 
To increase the therapeutic efficacy of medications with a limited absorption window, unstable at alkaline pH, soluble in acidic environments, and localized stomach activity, a variety of gastroretentive drug delivery systems (GRDDS) have been employed. In this overview, we go over the physiological state of the stomach, and different GRDDS techniques.

Keywords: GRDDS, Therapeutic Efficacy, Acidic Environments.

Dnyaneshwari Mahadev Shingate, Jameel Ahmed S Mulla

Abstract: 
Liposomes are versatile, self-assembled vesicles with applications spanning pharmaceuticals, cosmetics, and biotechnology. This review provides a comprehensive examination of liposomes, focusing on their classification, preparation methods, and compositional aspects. We first delve into the various classification schemes of liposomes, including unilamellar and multilamellar structures, and their subcategories based on size and charge. Next, we explore the diverse methodologies for liposome preparation, ranging from traditional techniques such as the thin-film hydration method to advanced methods like microfluidic mixing and solvent injection. Additionally, we discuss the impact of lipid composition, including the roles of phospholipids, cholesterol, and other additives, on the physicochemical properties and functionality of liposomes. By synthesizing current knowledge and highlighting recent advancements, this review aims to provide a holistic understanding of liposome technology and its implications for future research and application.

Keywords: Liposomes, Liposome Classification, Liposome Preparation Methods, Liposome Composition, Phospholipids, Cholesterol.

Marabathuni V Jhansi Priya, Chennu M M Prasada Rao

Abstract:
The preparation methods for nanosuspension formulation include both top-down methods like wet milling, dry milling, high-pressure homogenization, and co-grinding, and bottom-up methods. These methods help in enhancing the solubility of poorly water-soluble drugs, providing a promising alternative to traditional formulations. Additionally, the evaluation of nanosuspensions involves assessing various formulation parameters to determine factors such as enhanced dissolution and bioavailability. By considering components, preparation methods, process parameters, and administration routes, researchers aim to optimize nanosuspension formulations for different applications. These strategies help in developing effective nanosuspensions for various administration routes.

Keywords: Nanosuspensions, Top-down Methods, Bioavailability, Evaluation Parameters.

Shweta Mansing Patil, Jameel Ahmed S Mulla

Abstract:
Cubosomes that are unique nanovesicular systems those are important in drug administration. They are distinguished by their distinct bicontinuous cubic structures, which are created when amphiphilic lipids like phytantriol (PHYT) and glycerol monooleate (GMO) self-assemble. These nanocarriers, which usually have sizes between 100 and 500 nm, are good at delivering a range of drug types, including hydrophobic, hydrophilic, and and amphiphilic ones, because of their large surface area and encapsulating capacity. The word “cubosome” refers to its honeycomb-like cubic molecular structure, which facilitates efficient medication delivery and improved bioavailability. There are two main ways to manufacture cubosomes: the top-down method, which uses a high-energy dispersion of viscous cubic particles, and the bottom-up method, which uses liquid precursors to form spontaneously. Among the many benefits of cubosomes are their continuous drug release properties, biocompatibility, and capacity to shield delicate medications from deterioration. Because of their capacity to improve skin penetration and target certain biological barriers like the blood-brain barrier (BBB), they have demonstrated promise in a number of applications, including melanoma treatment, oral medication delivery, and cosmetic formulations. There are still issues, though, such as the difficulty of producing drugs on a big scale and the possibility of drug leakage during preparation and transportation. All things considered, cubosomes are a promising development in the realm of drug delivery systems, offering a unique combination of structural characteristics and adaptable uses that may greatly enhance therapeutic outcomes in a variety of medical fields.

Keywords: Cubosome, Top Down Method, Bottom Up Method, Drug Delivery.

 
Research Articles

Kamlesh Patkari, Jayesh Dwivedi, Hitendra Mahajan

Abstract:
This study aimed to prepare a nanosuspension formulation as a vehicle for the improvement of the ocular delivery of Prednisolone acetate. A high-pressure homogenization technique was used to produce nanosuspensions. Five formulations were prepared using different concentrations of surfactants Pluronic and evaluated for pH, particle size, drug content, differential scanning calorimetry (DSC), X-ray diffractometry (XRD), drug release, drug permeation, and stability. Also, the HET-CAM test was used to evaluate the irritation of eyes by formulations as an alternative to the draize eye test. Optimised formulations showed a small mean size that is well suited for ocular application. Drug content is good with sustained release of the drug. Sterility testing reveals suitability for ocular administration. CAM test demonstrated non-irritancy of ophthalmic nanosuspension. There were no appreciable changes in appearance, mean particle size, PDI, and pH after three months of stability testing. It was concluded that the use of Pluronic F 68 in the formulations does not show eye irritation and could be useful to achieve a suitable nanosuspension of PA as a novel ocular delivery system.

Keywords: Nanosuspension, Pluronic F68, Prednisolone Acetate.

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