Browsing by Author "Mhambi, Sinaye"

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    Permeation challenges of drugs for treatment of neurological tuberculosis and HIV and the application of magneto-electric nanoparticle drug delivery systems
    (MDPI, 2021) Fisher, David W.; Tchoula Tchokonte, Moise B.; Dube, Admire; Mhambi, Sinaye
    The anatomical structure of the brain at the blood-brain barrier (BBB) creates a limitation for the movement of drugs into the central nervous system (CNS). Drug delivery facilitated by magneto-electric nanoparticles (MENs) is a relatively new non-invasive approach for the delivery of drugs into the CNS. These nanoparticles (NPs) can create localized transient changes in the permeability of the cells of the BBB by inducing electroporation. MENs can be applied to deliver antiretrovirals and antibiotics towards the treatment of human immunodeficiency virus (HIV) and tuberculosis (TB) infections in the CNS. This review focuses on the drug permeation challenges and reviews the application of MENs for drug delivery for these diseases. We conclude that MENs are promising systems for effective CNS drug delivery and treatment for these diseases, however, further preclinical and clinical studies are required to achieve translation of this approach to the clinic. © 2021 by the authors. Licensee MDPI, Basel, Switzerland
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    Synthesis and characterization of magneto-electric nanoparticles for delivery of antituberculosis drugs across the blood-brain barrier
    (University of the Western Cape, 2022) Mhambi, Sinaye; Dube, Admire
    The anatomical structure of the brain at the blood–brain barrier (BBB) creates a limitation for the movement of drugs into the central nervous system (CNS). Although anti-infective drugs effective against Mycobacterium tuberculosis are known, the effective delivery of such drugs across the BBB remains a major challenge. This is due in part to insufficient drug penetration across the BBB of some anti-TB drugs. Large hydrophilic drugs such as ethambutol have poor cerebrospinal fluid (CSF) penetration and cannot cross the BBB even when they are inflamed. Increasing the dose of ethambutol in order to obtain higher CNS penetration is pernicious as it may result in systemic toxicity. Drug delivery facilitated by magneto-electric nanoparticles (MENs) is a relatively new non-invasive approach for the delivery of drugs into the CNS. These nanoparticles (NPs) can create localized transient changes in the permeability of the cells of the BBB by inducing electroporation.