At present, people and patients worldwide are relying on the medicinal plant as a therapeutic agent over pharmaceuticals because the medicinal plant is considered safer, especially for chronic disorders. Several medicinal plants and their components are being researched and explored for their possible therapeutic contribution to CNS disorders. Thymoquinone (TQ) is one such molecule. Thymoquinone, one of the constituents of Plant Nigella Sativa, is effective against several neurodegenerative diseases like; Alzheimer's, Depression, Encephalomyelitis, Epilepsy, Ischemia, Parkinson's, and Traumatic. This review article presents the neuropharmacological potential of TQ's, their challenges, and delivery prospects, explicitly focusing on neurological disorders along with their chemistry, pharmacokinetics, and toxicity. Since TQ has some pharmacokinetic challenges, scientists have focused on novel formulations and delivery systems to enhance bioavailability and ultimately increase its therapeutic value. In the present work, the role of nanotechnology in neurodegenerative disease and how it improves bioavailability and delivery of a drug to the site of action has been discussed. There are a few limitations for developing novel drug formulation, including solubility, pH, and compatibility of nanomaterials. Since here we are targeting CNS disorders, the blood-brain barrier (BBB) becomes an additional challenge Hence, the review summarized the novel aspects of delivery and biocompatible nanoparticles-based approaches for targeted drug delivery into CNS, enhancing TQ bioavailability and its neurotherapeutic effects.
Cubosomes are the nanoparticles of bicontinuous, lyotropic cubic phases, comprised of curved lipid bilayers organized into a three-dimensional honeycomb (cavernous) like structures separating two internal aqueous channels and large interfacial area. Cubic phases are optically isotropic, very viscous, and solid-like (crystalline) with cubic crystallographic symmetry. They can encapsulate hydrophilic, hydrophobic and amphiphilic drug substances, which are able to target and control the release of the bioactive agent. The cosmetic industry has made progress in the development of products to overcome skin as a barrier and deliver the actives through the skin effectively. Drug incorporated cubosomes shows some unique advantageous like, protection from chemical and physiological degradation, in vivo drug release in a controlled manner and improving the bioavailability of drug while reducing the side effect. Cubosomes are pharmacologically inactive, non-irritant, non-toxic, effective, and cosmetically acceptable. Topical drug delivery can deliver drugs selectively to the specific site; this avoids fluctuations of drug levels and improves patient compliance and suitable local and systemic therapeutic effects. Cubosomal topical drug formulation shows outstanding potential advantages for their controlled and sustained drug delivery. This review article mainly focuses on cosmetic and topical applications of cubosomes.
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