Study of influence of bases-carriers on biological activity f vasopressin in nasal dosage forms
Journal Title: Фармацевтичний журнал - Year 2016, Vol 2, Issue 2
Abstract
Search of drugs and methods of medical treatment of mental disorders, among which the leading place belongs to nootropic medicinal products, is still of current importance. Among the latter, a special place belongs to peptides of vasopressin derivatives, which stimulate both processes of learning and memory. At systemic administration of peptides, their further use has difficulties due to high biodegradation rate and low bioavailability. Therefore, to use alternative transmucosal ways of administration, particularly intranasal way with appropriate soft dosage forms is promising for vasopressin derivatives. The aim of this work is to study influence of bases–carriers of nasal soft dosage forms of vasopressin on its nootropic activity. Arginine-vasopressin in concentration of 0.000005% – synthetic analogue of vasopressin was used as active substance. Ointment bases, which are widely used in production of ointments, described in literature and without allergic and sensitizing manifestations after application, were studied as carriers for investigated soft dosage form of arginine-vasopressin. A specific activity was recorded for all selected compositions in the form of latent period of conditioned passive avoidance reaction in non amnestic white rats after nasal ointment application. It was found that the kind of base-carrier has a significant impact on biological activity of vasopressin in nasal dosage forms. Analysis of results shown that the nature of investigated ointment bases has a significant influence on latent period of conditioned passive avoidance response for the nonamnesic white rats after applying nasal ointment with AVP (arginine- vasopressin). In such a way sort of the base exerts a statistically significant influence on biological activity of vasopressin in nasal dosage forms. Examination of average value difference of latent period conditioned passive avoidance response for the nonamnesic white rats after applying nasal ointment with AVP 0,000005% by the Duncan’s multiple rank test was carried out. Variance analysis of results shown that nasal ointment with vasopressin on the lanolin–paraffin base has an optimal nootropic activity.
Authors and Affiliations
Abdulkarim Al Nukari, A. L. Drozdov
Keywords
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