Human serum albumin (HSA) is one of the most important transporters for drugs in the systemic circulation. In this study, we investigated the interaction of rosuvastatin (ROS) and atorvastatin (ATO) with HSA. Binding of a drug molecule to HSA significantly affects the pharmacokinetics of the drug as it increases drug solubility in plasma, decreases toxicity and protects molecules from oxidation. This study was made using fluorescence spectroscopy and molecular modeling approach. Fluorescence spectra were recorded for two different statins brands at seven different concentrations. The results revealed that both statins (ROS and ATO) cause the fluorescence quenching of the HSA solution. ROS and ATO binds strongly to HSA with the binding constant (Kb) of 1.0246×106 and 0,9018×106, respectively. In addition, it was observed that high concentrations of ATO cause a shift of the emission maximum towards longer wavelengths (red-shift), which may be due to the unfolding of protein chains or denaturation. Furthermore, it was calculated that HSA possesses one binding site for ROS and ATO. Results from molecular docking showed that ROS has a higher affinity for Sudlow site I compared to Sudlow site II and the main binding forces are hydrogen bonds. ATO has nearly equal affinity for both binding sites on HSA, and the main binding forces are hydrophobic interactions.

Introduction: Statins are lipid lowering medications, used for the prevention of cardiovascular diseases (CVD), but have shown to increase the risk of Type 2 diabetes mellitus. The aim of this study was to investigate the effects of high-potency statins, atorvastatin, and rosuvastatin on fasting glucose (FG) and hemoglobin A1c (HbA1c) in CVD patients. Methods: The case–control study included 123 patients from Tuzla Canton, Bosnia, and Herzegovina, with a diagnosis of CVD, treated in three health centers: Public Health Center Gračanica, Banovići, and Čelić. Of total patients, 84 were statin users (39 atorvastatin users and 45 rosuvastatin users) and 39 were not. Demographic data, diagnosis, and data of the therapy were taken from the medical records, as well as data of the FG and HbA1c, measured before or within 3 months of the statin therapy introduction. For the same patients, FG and HbA1c were also measured at least 3 months after the introduction of therapy. Results: Obtained results have shown a significant increase of FG in CVD patients on statin therapy in relation to control (p = 0.034). Comparing the diabetogenic effects of atrovastatin and rosuvastatin, it was found that the HbA1c in patients on atorvastatin therapy was significantly higher comparing to those on rosuvastatain therapy (p = 0.028). The FG was significantly increased (p = 0.027) after atrovastatin therapy. Similar results were obtained in diabetogenic CVD patients, where HbA1c on atorvastatin therapy was significantly higher comparing to HbA1c in those on rosuvastatain therapy (p = 0.039). A significant correlation was found between the increase in FG and HbA1c with the duration of atorvastatin therapy (p = 0.001 and p = 0.033), and between the increase in HbA1c and the duration of rosuvastatin therapy (p = 0.001). Conclusion: Long-term therapy with high-potency statins, atorvastatin, and rosuvastatin, may increase levels of FG and HbA1c in patients with CVD, where atorvastatin shows more significant effects.

Objective. The aim of this study was to investigate students’ knowledge, attitudes and hesitancy regarding COVID-19 vaccination. Methods. A cross-sectional questionnaire-based survey was conducted among a total of 1282 medical students and 509 non-medical students at four public universities in Bosnia and Herzegovina: Tuzla, Sarajevo, Banja Luka, and Mostar. Results. A significantly higher rate of vaccination was observed in the group of medical students as well as a higher level of knowledge about vaccination in general and vaccines against the COVID-19 disease. Students who received the COVID-19 vaccine had a higher level of knowledge about vaccination in general and COVID-19 vaccines in particular compared to the non-vaccinated students in the medical and non-medical groups, respectively. Furthermore, vaccinated students, regardless of the course they are taking, showed generally stronger positive attitudes compared to non-vaccinated students, regarding the safety and effectiveness of the COVID-19 vaccine. Both groups of students believe that the rapid development of the vaccine is contributing to refusal or hesitancy to receive a vaccine against COVID-19. Social media/networks were the main sources of information about the COVID-19 vaccine. We did not find any contribution of social media to the reduced level of COVID-19 vaccine coverage. Conclusion. Education of students about the benefits of the COVID-19 vaccine will lead to its better acceptance as well as the development of more positive attitudes towards vaccination in general, especially having in mind that students are the future population of parents, who will make decisions about vaccinating their children.

Aims: Industrial processed food, pharmaceutical and cosmetical products contain numerous substances the safety of which has been widely concerned. Potassium sorbate (PS) is a common preservative used in a wide-range of products. Sunset yellow (SY) is one of the most commonly used dye in food and pharmaceutical industry. Several studies suggested cytotoxic and genotoxic potential of SY and PS in different cell lines. These effects can lead to organ damage and cancer development. The aim of this study is to investigate cytotoxic and genotoxic potential of two widely used food additives, SY and PS, in Jurkat cell line. Methodology: PrestoBlue assay was used to assess the cytotoxic potential of SY and PS. For observation of DNA damage, cytostatic and cytotoxic effects, the cytokinesis-block micronucleus cytome (CBMN) assay was performed. Results: Decrease of cell viability in Jurkat cell line was observed after 24-hour exposure to both SY and PS. CBMN assay has revealed significant increase of necrotic cells (P<0.05). Genotoxic biomarkers were in physiological range after 24-hour exposure to both analyzed additives. Conclusion: Our findings suggest that SY, as well as PS have cytotoxic potential in Jurkat cell line, as a result of increased number of necrotic cells. Higher cytotoxic effect was caused by SY compared to PS. However, genotoxic potential was not recorded for any of the food additives analyzed.

Origanum compactum, an endemic Moroccan medicinal herb, possesses many different activities such as antibacterial, antifungal, antioxidant and anticancer. The aim of this study was to investigate the stability and antifungal activity of liposomal dispersion with this essential oil. Liposomal dispersion stability was evaluated by testing the vesicle size, polydispersity index and zeta potential. It was also examined the in vitro release of thymol and carvacrol from liposomal dispersion. The major components of this essential oil were carvacrol (58.4%), thymol (12.5%) and γ-terpinene (10.7%). Origanum compactum essential oil showed a strong antifungal activity, and the inhibition zones ranged from 24 to 45 mm. After 210 minutes, 80.88% thymol and 16.67% carvacrol were released. Stability assessment was performed for three months and the liposomal dispersion showed a good stability.

Arylmethylenebis(3-hydroxy-5,5-dimethyl-2-cyclohexen-1-one) derivatives (aryl=2-hydroxynaphthyl ( 1 ) and 3,4-dihydroxyphenyl ( 2 ) have been synthesized and their structures have been elucidated. Both compounds were examined for their antioxidant, antimicrobial and cytotoxic activity. Antioxidative activities of synthesized compounds were evaluated by 2,2-diphenyl-1-picryl-hydrazyl (DPPH) and ferric reducing antioxidant power (FRAP) methods. The microbial screening was performed by diffusion method on bacterial strains Staphylococcus aureus , Enterococcus faecalis , Bacillus subtilis and Candida albicans . Cytotoxic activity was tested on liver hepatocellular carcinoma cell line (Hep G2) by Neutral red assay. Compared to compound 2 , compound 1 showed better antimicrobial and antifungal activity, while compound 2 showed better antioxidant activity with IC 50 of 0.0156 mM and FRAP value 50469.44 µmol/l Fe 2+ . Both compounds showed cytotoxic activity. Obtained results implicate the importance of arylmethylenebis(3-hydroxy-5,5-dimethyl-2-cyclohexen-1-on) derivatives as a potential antioxidant, antimicrobial and cytotoxic agents.

Introduction: Previous studies have showed that fluorimetric analysis may be used as a simple, rapid, low cost and reliable method for authentication botanical origin of honey. Primary aims of this study were to record fluorescence spactra of acacia, meadow and honeydew honey samples and to determine content of flavonoid and polyphenoles in relation to colour intensity of honey. Material and methods: Fluorescence spectra of honey samples were recorded. Spectrophotometric analysis was used to determine flavonoid and polyphenols content. The honey color scoring was developed by the authors as the arbitrary system. Results: Acacia honey showed high fluorescence emission intensity after an excitation at 340 nm, 390 nm and 440 nm. Meadow honey showed fluorescence after excitation at 390 nm and 440 nm, while fluorescence, caused by excitation at 340 nm, was absent. Honeydew honey showed low intensity of fluorescence at 440 nm excitation while fluorescence was absent at 340 nm and 390 nm excitation, respectively. Statistically significant difference was found for flavonoids and polyphenols levels, between honeydew and acacia honey. Statistically significant difference in polyphenols levels between meadow and acacia honey was found. There was no statistically significant difference of flavonoids and polyphenols between samples of meadow and honeydew honey. Conclusion: Fluorimetric profiles, flavonoid and polyphenols content, together with colour intensity of honey may be useful in authenitication of botanical origin of honey.

Liposomes are spherical, biodegradable, and biocompatible vesicular systems. These vesicles are built from phospholipid double layers (membranes) surrounding the inner water phase. Liposomes are highly desirable as drug carriers because they can incorporate hydrophilic, hydrophobic and amphipathic drug substances (drugs). The physicochemical properties of liposomes such as size, charge, surface properties and encapsulation efficiency can highly influence their in vivo stability and kinetics. The aim of our study was to prepare liposomal dispersions and to determine the influence of cycles of high pressure homogenization on some parameters, such as vesicle size and polydispersity index (PDI). Higher homogenization pressures and repeated recirculation led to further reduction in vesicle diameter and heterogeneity. For preparing liposomal dispersions Phosal IP 40 and Phosal 75 SA were used (Lipoid, Germany). Liposomal dispersions were prepared according to the thin film hydration method. By sampling after each cycle, an estimate was made of how many cycles are needed for the dispersion to have satisfactory parameters (size and PDI). The size and PDI analysis of the liposomes were carried out by using Zetasizer (Nano series) ZS 90, Malvern Instruments. . High pressure homogenization was carried out in 10 cycles and based on the obtained liposome size values and PDI, was determined how many cycles are needed in the process of homogenization. With each cycle, the size of the liposomes decreased and PDI value was reduced. It has been observed that after 5 cycles of homogenization there is no significant decrease in the size of the liposomes and PDI. Therefore, in the further production of liposomes with active substances with these raw materials, is recommended to use only 5 cycles of homogenization

Humans are exposed to a cocktail of heavy metal toxicants in the environment. Though heavy metals are detrimental, there is a lack of information on the toxicity of mixtures. In this study, two common heavy metals, lead and cadmium, were introduced individually and as mixtures to HL-60 and JURKAT cell lines for 24 hours. The study established that exposures to these two heavy metals induced cytotoxic and genotoxic effects on both cell lines. Also, cadmium exhibited a higher cytotoxic and genotoxic potential than lead. The cytotoxicity data of single metals were used to determine the mixtures interaction profile by using the effect additivity method. Metal mixtures showed synergistic effect in HL-60 cells and antagonistic effect in JURKAT cells, compared to individual metals. The combined effects should be considered in the risk assessment of heavy metal co-exposure and potency.