Ribavirin in Modern Antitumor Therapy: Prospects for Intranasal Administration.

Ribavirin has been used as an antiviral agent to treat a variety of viral infections since the 1970s. Over the past few decades, studies have been conducted on the pharmacology of ribavirin, and the possibility of its use in new indications has been explored. According to the results of a number of studies, ribavirin efficacy in the therapy of malignant neoplasms of various genesis has been proven. Furthermore, due to the complexity of brain tumor therapy using surgical methods, targeted delivery of ribavirin to the brain becomes a promising alternative to existing treatment methods. Targeting of active pharmaceutical ingredient (API) to the brain tumor is achieved by intranasal drug delivery via a Nose-to-Brain mechanism. In addition, using this delivery mechanism, it is possible to reach the brain while bypassing the blood-brain barrier (BBB), thus avoiding the effects of the first passage through the liver. Despite the significant advantages of the method, there are limiting factors to its application - mucociliary clearance, which aims to remove foreign bodies from the surface of the nasal mucosa. In situ, systems are able to reduce the intensity of interfering factors on API and allow the achievement of maximum bioavailability during intranasal administration.

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