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Sustained release of drug-loaded nanoparticles from a novel vaginal ring design (360G-Wellcome-211729_Z_18_Z)

Sustained-release drug products are useful in prolonging the action of a drug in the body by maintaining therapeutic concentrations of the drug over extended time periods. Here, we are particularly interested in polymeric vaginal rings for long-acting vaginal administration of drugs (1). Various steroid-releasing vaginal ring products are currently marketed for hormonal contraception and estrogen replacement therapy, and a new ring device – developed in part by the Queen's University Belfast (QUB) and offering sustained release of the antiretroviral drug dapivirine for HIV prevention – is due to reach market soon. However, a major limitation of current vaginal ring technologies is that they are generally not useful for administration of either large molecule drugs or drug-loaded nanoparticles, due to limited solubility and/or diffusion in the polymeric materials used to manufacture rings. Here, we propose for the first time to test a novel vaginal ring developed at QUB for sustained release of drug-loaded nanoparticles, with potential applications in prevention/treatment of sexually transmitted infections, mucosal immunisation, and treatment of cervicovaginal cancers. The ring device comprises orifices in the ring surface which expose the underlying drug-loaded core. The ring is easy to manufacture using highly-scalable and conventional injection molding technologies.


31 May 2018

Grant details
Amount Awarded 0
Applicant Surname Lim
Approval Committee Internal Decision Panel
Award Date 2018-05-31T00:00:00+00:00
Financial Year 2017/18
Grant Programme: Title Vacation Scholarships
Internal ID 211729/Z/18/Z
Lead Applicant Miss Deanna Lim
Planned Dates: End Date 2018-08-05T00:00:00+00:00
Planned Dates: Start Date 2018-06-06T00:00:00+00:00
Recipient Org: Country United Kingdom
Region Northern Ireland
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