Mucoadhesive polymers

Medication activities might be enhanced by creating new medication conveyance frameworks; one such detailing being a mucoadhesive framework. These frameworks stay in close contact with the absorption tissue, the mucous layer, discharging the medication at the activity site prompting expanded bioavailability for both local and systemic impacts. Throughout the last few decades, the application of mucoadhesive polymers in nasal medication conveyance frameworks has picked up enthusiasm among pharmaceutical researchers as a method for advertising dose structure residence time in the nasal cavity and in addition for enhancing closeness of contact with absorptive membrane of the natural framework. Also, the upgraded paracellular absorption after the swelling of the mucoadhesive polymers on the nasal layers gives a critical path to the assimilation of the macromolecules through the nasal cavity. This review explained a few parts of mucoadhesion identified with the nasal medication conveyance framework. On the first check, the theories of the attachment of mucoadhesive polymers to the mucosa epithelium are described. Also, the attributes and application of a few generally utilized mucoadhesive polymers as a part of nasal medication conveyance are introduced. The mucoadhesive polymers have gigantic potential for the conveyance of therapeutic macromolecules, qualities, and immunizations through the nasal cavity with upgraded bioavailability.

  Drug development technologies constituting innovations at the formulation end in the pharmaceutical industry has received a lot of attention in past two decades. Drug delivery as an opportunity to extend product life cycles has indeed proved its place in the market with significant advantages of therapeutic gains as well as commercial success. Carrier technology offers an intelligent approach for drug delivery by coupling the drug to a carrier particle such as microspheres, nanoparticles, liposomes, etc. which modulates the release and absorption characteristics of the drug. Mucoadhesion is a topic of current interest in the design of drug delivery systems. Mucoadhesive microspheres exhibit a prolonged residence time at the site of application or absorption and facilitate an intimate contact with the underlying absorption surface and thus contribute to improved and/or better therapeutic performance of drugs. Hence, uptake and consequently bioavailability of the drug is increased and frequency of dosing reduced with the result that patient compliance is improved. In recent years such Mucoadhesive microspheres have been developed for oral, buccal, nasal, ocular, rectal and vaginal for either systemic or local effects. This review article aims to provide various aspects of mucoadhesion, theories of mucoadhesion and the polymers which will shows the excellent mucoadhesive properties. It also contains a number of available methods of preparation of microspheres and its evaluation including in vitro-wash off test for to determine the mucoadhesive property of prepared microspheres.

  Pantoprazole Sodium sesquihydrate is a proton pump inhibitor that belongs to group benzimidazole, used for the treatment of ulcers in duodenum and gastric, which was degraded in stomach .Thus, the purpose of the study is to formulate a dosage form which is coated by coating polymer(s) which passed the acidic medium and exhibit significant effect in intestine and cures ulcers. An attempt was made to formulate micro particles with two coating polymers: Eudragit L-100 & Cellulose acetate phthalate as well as using of mucoadhesive polymers will release drug in controlled manner. Thus, these different types of micro particles was characterized in terms of Particles size, Mucoadhesive efficiency, Entrapment efficiency, In-vitro as well as In-vivo studies.   Key words: - Pantoprazole, Coating polymers, Mucoadhesive polymers