Faculty of Pharmacy

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    Comparative Modeling Approaches in the Development and Evaluation of Silica Nanoparticles as 5-Fluorouracil Carriers using PLS, DoE and GBR
    (Springer Science and Business Media LLC, 2025-11-24)
    Djurdjic, Beti
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    Dimkovska, Teodora
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    Comparative Modeling Approaches in the Development and Evaluation of Silica Nanoparticles as 5-Fluorouracil Carriers using PLS, DoE and GBR
    (Springer Science and Business Media LLC, 2025-11-24)
    Djurdjic, Beti
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    Dimkovska, Teodora
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    3D printed extended-release hydrochlorothiazide tablets
    (Elsevier BV, 2025-03-01)
    Tasevska, Teodora
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    Adamov, Ivana
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    Ibrić, Svetlana
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    In this study 3D printed tablets (printlets) with extended release of hydrochlorothiazide (HHT) as model active ingredient were designed and developed. Four formulations, F0.1SSE, F1SSE, F0.1DLP and F1DLP, have been manufactured and characterized, using non-typical semi-solid extrusion (SSE) with UV light solidification and digital light processing (DLP) techniques. Obtained rheological studies pointed out to F1SSE and F1DLP as more suitable for SSE and DLP printing, respectively. Photopolymerization process between photopolymer (PEGDA) and photoinitiator (DPPO; 0.1% and 1%) was investigated using FTIR, with PCA modeling utilized to analyze spectral variations over time and estimate crosslinking kinetics. SSE printlets averaged ∼6.5 mm in diameter, ∼3 mm in height and ∼110 mg in mass, while DLP printlets averaged ∼8.5 mm in diameter, ∼2.5 mm in height, with masses of ∼170 mg (F0.1DLP) and ∼220 mg (F1DLP). All four formulations complied to the requirements of European pharmacopeia for uniformity of dosage units of single dose preparations. In vitro release studies indicated extended-release profiles in both 0.1M Hydrochloric acid (HCl) and phosphate buffer pH 6.8 for SSE and DLP printlets. The release kinetics of HHT from the printlets were modeled to fit First order, Higuchi, Korsmeyer-Peppas and Hixson-Crowell equations and the most probable ones were determined based on the R2 values and Akaike information criterion. FTIR and Raman spectroscopic analyses of printlets confirmed the presence of characteristic peaks from both, HHT and excipients, as well as modifications in bonds due to the photopolymeric reaction.
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    Micro-Raman Spectroscopy for Detection of Label-Free and Oil Red O Labeled PEGylated Nanoliposomes in hCmec/D3 Cell Internalization Studies
    (Croatian Chemical Society, 2022-12)
    Gorachinov, Filip
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    Shalabalija, Dushko
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    Mihailova Ljubica
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    Comparative Studies of the Uptake and Internalization Pathways of Different Lipid Nano-Systems Intended for Brain Delivery
    (MDPI AG, 2023-08-03)
    Mihailova Ljubica
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    Shalabalija Dushko
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    Zimmer, Andreas
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    Lipid nano-systems were prepared and characterized in a series of well-established in vitro tests that could assess their interactions with the hCMEC/D3 and SH-SY5Y cell lines as a model for the blood-brain barrier and neuronal function, accordingly. The prepared formulations of nanoliposomes and nanostructured lipid carriers were characterized by z-average diameters of ~120 nm and ~105 nm, respectively, following a unimodal particle size distribution (PDI < 0.3) and negative Z-potential (-24.30 mV to -31.20 mV). Stability studies implied that the nano-systems were stable in a physiologically relevant medium as well as human plasma, except nanoliposomes containing poloxamer on their surface, where there was an increase in particle size of ~26%. The presence of stealth polymer tends to decrease the amount of adsorbed proteins onto a particle's surface, according to protein adsorption studies. Both formulations of nanoliposomes were characterized by a low cytotoxicity, while their cell viability was reduced when incubated with the highest concentration (100 μg/mL) of nanostructured lipid formulations, which could have been associated with the consumption of cellular energy, thus resulting in a reduction in metabolic active cells. The uptake of all the nano-systems in the hCMEC/D3 and SH-SY5Y cell lines was successful, most likely following ATP-dependent internalization, as well as transport via passive diffusion.
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    Nanotechnology - a robust tool for fighting the challenges of drug resistance in non-small cell lung cancer
    (BEILSTEIN INSTITUT, 2023-02-22)
    Gorachinov, Filip
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    Mraiche, Fatima
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    Moustafa, Diala Alhaj
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    Hishari, Ola
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    Ismail, Yomna
    Genomic and proteomic mutation analysis is the standard of care for selecting candidates for therapies with tyrosine kinase inhibitors against the human epidermal growth factor receptor (EGFR TKI therapies) and further monitoring cancer treatment efficacy and cancer development. Acquired resistance due to various genetic aberrations is an unavoidable problem during EGFR TKI therapy, leading to the rapid exhaustion of standard molecularly targeted therapeutic options against mutant variants. Attacking multiple molecular targets within one or several signaling pathways by co-delivery of multiple agents is a viable strategy for overcoming and preventing resistance to EGFR TKIs. However, because of the difference in pharmacokinetics among agents, combined therapies may not effectively reach their targets. The obstacles regarding the simultaneous co-delivery of therapeutic agents at the site of action can be overcome using nanomedicine as a platform and nanotools as delivery agents. Precision oncology research to identify targetable biomarkers and optimize tumor homing agents, hand in hand with designing multifunctional and multistage nanocarriers that respond to the inherent heterogeneity of the tumors, may resolve the challenges of inadequate tumor localization, improve intracellular internalization, and bring advantages over conventional nanocarriers.
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    Formulation and characterization of snail slime-chitosan microparticles with herbal extracts intended for treatment of chronic wounds
    (2022)
    Nestorovska, Martina
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    Cenova, Anastazija
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    Shalabalija, Dushko
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    Mihailova, Ljubica
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    Evaluation of antioxidant properties of herbal mixture and CBD oil for the treatment of chronic wound
    (Macedonian pharmaceutical association, 2022)
    Cenova, Anastazija
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    Nestorovska, Martina
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    Mihailova, Ljubica
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    Shalabalija, Dushko
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    Pharmacy students' experience during the Covid-19 pandemic and its impact on their health, academic endeavors and overall perceptions-a study
    (Macedonian pharmaceutical association, 2022)
    Naumovski, Metodi
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    Dodov, Teodora
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    Mihailova, Ljubica
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    Slaveska Raicki, Renata
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