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Cinzia Cimino

Ciclo: XXXVI

Data inizio: 31/10/2020

Curriculum: Farmaceutiche

Borsa: UniCT

Titolo tesi: Overcoming biological barriers through the use of drug delivery systems 

Abstract: Nowadays, the focus of the pharmaceutical research is addressed to the overcoming of the limits of the conventional dosage forms, through the use of drug delivery systems (DDS), aiming to improve the biodistribution of the encapsulated active drugs. Among the advantages of these platforms, it is worth to be mentioned the ability to encapsulate hydrophilic drugs, which generally are quickly degraded after administration. Basing on this, a triphasic microemulsion water-in-oil-in-water (W/O/W) was developed for the potential delivery of hydrophilic molecules or vaccines through the nasal mucosal route, which was recently reconsidered because of its properties of high patient compliance and immune response. Among the advantages of the drug delivery systems, if opportunely designed, there is also the capability to overcome the biological barriers and to deliver the drug to the target site with higher efficiency, which is an important feature in the treatment of neurodegenerative diseases, for instance. Inhalation of essential oils is known from centuries (defined aromatherapy), and, for this reason, after deepening the therapeutical applications of these natural compounds, it was developed their vehiculation into DDS, and nanostructured lipid carriers (NLC) in particular, for the potential intranasal administration in the adjuvant treatment of the neurodegenerative pathologies; this administration route, also called nose-to-brain, allows a direct achieving of the central nervous system, bypassing the blood brain barrier. Another important physiological limit is at ocular level, and, through physical barriers and protection mechanisms, it reduces drastically the bioavailability of the topically instilled drugs. For this reason, the treatment of the pathologies of the inner eye, as the aggressive uveal melanoma, is still difficult. In this framework, the delivery of the active molecule through DDS is advantageous since it avoids the quick elimination trough lacrimation and blinking and allows the delivery to the target site in the posterior segment of the eye. The targeting of this ocular tumor was investigated through two platforms: a solid lipid nanoparticles (NLC) platform loaded with sorafenib, and nanostructured lipid carriers (NLC) platforms in which the new synthetized MRJF22 was encapsulated. After a detailed bibliographic study on the potentiality of the fluorescence techniques in the ocular field, both in diagnostics and biodistribution, this knowledge was applied through in vivo studies aimed to the assessment of the potential use of the developed carriers in the treatment of uveal melanoma. 

Tutor: Marrazzo; Carbone

Data Conseguimento Titolo: 20/12/2023

Linkedin: www.linkedin.com/in/cinzia-cimino-1a5499195

Emailcinzia.cimino@unict.it

Periodi all'estero- Sede e data: University of Barcelona (Spain), gennaio-giugno 2023 

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