Informatics Publishing Limited

Arun Radhakrishnan ¹, Gowthamarajan Kuppusamy ¹, Senthil Venkatachalam ¹, Rohithkrishnan Vijayakumar ¹, Nikhitha K. Shanmukhan ¹

Affiliations
1 Department of Pharmaceutics, JSS College of Pharmacy, Udhagamandalam JSS Academy of Higher Education and Research, IN

Abstract

Uveitis is an inflammatory disease causes the damage of eye tissues and leads to the loss of vision once kept untreated. Early detection and identification of the disease are necessary for the prevention of the progressing inflammation and tissue damage. Existing treatment comprise of the administration of oral steroids, immunosuppressant, biological and adjuvant therapy. Even though topical, intravitreal and subconjunctival administration routes have been chosen for the drug administration, they fail to achieve the drug concentration to elicit a better therapeutic action due to the presence of ocular barriers such as tear, cornea conjunctiva, sclera, choroid membrane, retina, and blood-retinal barrier. Design of delivery systems that can prolong the precorneal habitation time increase the drug release as well as reduce the side effects such as methods to achieve prolonged can promise effective ocular drug delivery. Delivery systems such as hydrogels, liposomes, micro carrier systems, vitreous implants, medicated lenses, nanotechnology approaches such as nanocrystals, nanoemulsions, nanosuspensions, dendrimers, microneedles etc. exist as current research and the future research perspectives to achieve effective ocular drug delivery.

Keywords

Uveitis, Classification, Treatment, Current Status of Therapy, Novel Ocular Drug Delivery.

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C. Kalaivani ¹, Gowthamarajan Kuppusamy ¹, Saikamal ¹, Veera Venkata Satyanarayana Reddy Karri ¹

Affiliations
1 Department of Pharmaceutics, JSS College of Pharmacy, Ooty, IN

Abstract

Scaffolds are the adaptable tools for the treatment of diabetic wounds, In this study, Simvastatin was loaded in polycaprolactone-collagen scaffolds for the treatment of diabetic foot ulcer using the freeze-drying technique. Eventually scaffolds characterization were observed in terms of Scanning Electron Microscopy, Differential scanning calorimetry (DSC), Porosity, Water absorption test, Matrix degradation, In vitro drug release studies, cell proliferation assay, cytotoxicity assay. Scaffolds prepared with polycaprolactone and collagen-polymer showed the homogeneous distribution with high porosity, extended biodegradation rate, high water uptake. All the scaffold formulation showed the sustained drug release and then a plateau. The cross-Linked scaffold has significant slower release in comparison to non-crosslinked scaffold, this is because of cross-linking of the scaffolds where the chemical and mechanical bonding is high compared to non-crosslinked scaffold, Non-crosslinked, showed 85.34% of drug release by this it can be concluded that non cross-linked scaffolds showed the prolonged release, In the cell proliferation assay after 72 h, the cell growth was found to be greater when we compared with placebo and control due to the presence of drug, which explains that the cells are in logarithmic phase. Noncross linked scaffold has shown an increase in cell growth by 28% from its initial value. In Differential Scanning Calorimetry (DSC) shows that there is no change in the peaks by that we can confirm that all the excipients are compatible to each other The obtained results imply that the investigated scaffold is a potential candidate for skin regeneration application because the present study states that simvastatin is having all the properties to treat the Diabetic Foot Ulcer(DFU) without producing the resistance.

Keywords

Simvastatin, Polycaprolactone, Collagen, Composite Scaffolds, Diabetic Wounds.

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