Browsing by Author "Sumit Sharma"

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    Comprehensive Insights into Lipid Nanocarriers: Preparation, Characterization and Applications
    (Chitkara University Publications, 2026-08-04) Ravi Goyal; Gurpreet Kaur; Sumit Sharma; Deepika Raina; Nitin Chitranshi
    Background: Lipid nanocarriers have emerged as a novel alternative to traditional drug delivery systems such as emulsions, liposomes, and microparticulate systems. These are spherical nano-sized (1–1000 nm) colloidal carriers dispersed in an aqueous surfactant solution. Their biodegradable, biocompatible, and non-toxic nature has led to extensive exploration in clinical medicine for multiple routes of administration, including oral, parenteral, and topical delivery. They offer high stability, large drug-loading capacity, and the ability to deliver both hydrophilic and lipophilic drugs in a targeted and controlled manner. Purpose: The purpose of this review is to provide a comprehensive overview of lipid nanocarriers, focusing on their fundamental principles, advantages, limitations, preparation methods, and characterization techniques. Methods: The review compiles and analyzes literature from relevant publications from the last 15 years on lipid nanocarriers, covering their formulation approaches, different preparation techniques, and evaluation parameters used to assess their physicochemical and functional properties. Results: Lipid nanocarriers demonstrate significant advantages, including enhanced stability, improved drug loading, controlled and targeted drug release, and adaptability to various formulation requirements. Their versatility makes them suitable for applications in pharmaceuticals, vaccines, nutraceuticals, and diagnostic systems. Conclusions: A comprehensive understanding of lipid nanocarriers can open new avenues in the treatment of multifactorial disorders. Their safety, efficacy, and flexibility position them as promising candidates for advanced drug delivery systems and future therapeutic innovations.
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    Pharmaceutical Applications of Xanthan Gum in Ophthalmic Delivery Systems
    (Chitkara University Publications, 2020-05-20) Shiveena Bhatia; Tarun Kumar; Sonali Batra; Sumit Sharma
    Introduction: Ophthalmic delivery system is one of the challenging domains of formulation and development due to tear dilutions, drug loss due to lacrimal drainage, limited volume and pre-corneal barriers. Several pharmaceutical technologies are exploited in order to counter the challenges posed by ocular route such as emulsions and suspensions. But all these technologies have stability issues which lead to their limited use. Background: Among polysaccharides, xanthan gum, a natural occurring biodegradable exopolysaccharide extracted from bacterium Xanthomonas campestris is widely accepted as one of the potential polysaccharide in ophthalmic delivery systems. Review Results: Xanthan gum is commonly used as an additive to various ophthalmic formulations due to its mucoadhesive property and imparting stability to various novel pharmaceutical technologies for ophthalmic. Xanthan gum also allows chemical modifications with various ligands which consequently allow controlled release, modified dissolution rate and viscoelasticity. Conclusion: In this review we are providing an insight over potential of pharmaceutical applications of xanthan gum. Also, we have discussed the scope of chemical modifications in xanthan gum with modified physicochemical properties.