TY  - JOUR
AU  - Filipić, Brankica
AU  - Ušjak, Dušan
AU  - Rambaher, Martina Hrast
AU  - Oljacic, Slavica
AU  - Milenković, Marina
PY  - 2024
UR  - https://www.frontiersin.org/articles/10.3389/fcimb.2024.1370062
UR  - https://imagine.imgge.bg.ac.rs/handle/123456789/2333
AB  - Antimicrobial resistance is a global threat, leading to an alarming increase in the prevalence of bacterial infections that can no longer be treated with available antibiotics. The World Health Organization estimates that by 2050 up to 10 million deaths per year could be associated with antimicrobial resistance, which would equal the annual number of cancer deaths worldwide. To overcome this emerging crisis, novel anti-bacterial compounds are urgently needed. There are two possible approaches in the fight against bacterial infections: a) targeting structures within bacterial cells, similar to existing antibiotics; and/or b) targeting virulence factors rather than bacterial growth. Here, for the first time, we provide a comprehensive overview of the key steps in the evaluation of potential new anti-bacterial and/or anti-virulence compounds. The methods described in this review include: a) in silico methods for the evaluation of novel compounds; b) anti-bacterial assays (MIC, MBC, Time-kill); b) anti-virulence assays (anti-biofilm, anti-quorum sensing, anti-adhesion); and c) evaluation of safety aspects (cytotoxicity assay and Ames test). Overall, we provide a detailed description of the methods that are an essential tool for chemists, computational chemists, microbiologists, and toxicologists in the evaluation of potential novel antimicrobial compounds. These methods are cost-effective and have high predictive value. They are widely used in preclinical studies to identify new molecular candidates, for further investigation in animal and human trials.
PB  - Frontiers
T2  - Frontiers in Cellular and Infection Microbiology
T1  - Evaluation of novel compounds as anti-bacterial or anti-virulence agents
VL  - 14
DO  - 10.3389/fcimb.2024.1370062
ER  - 

@article{
author = "Filipić, Brankica and Ušjak, Dušan and Rambaher, Martina Hrast and Oljacic, Slavica and Milenković, Marina",
year = "2024",
abstract = "Antimicrobial resistance is a global threat, leading to an alarming increase in the prevalence of bacterial infections that can no longer be treated with available antibiotics. The World Health Organization estimates that by 2050 up to 10 million deaths per year could be associated with antimicrobial resistance, which would equal the annual number of cancer deaths worldwide. To overcome this emerging crisis, novel anti-bacterial compounds are urgently needed. There are two possible approaches in the fight against bacterial infections: a) targeting structures within bacterial cells, similar to existing antibiotics; and/or b) targeting virulence factors rather than bacterial growth. Here, for the first time, we provide a comprehensive overview of the key steps in the evaluation of potential new anti-bacterial and/or anti-virulence compounds. The methods described in this review include: a) in silico methods for the evaluation of novel compounds; b) anti-bacterial assays (MIC, MBC, Time-kill); b) anti-virulence assays (anti-biofilm, anti-quorum sensing, anti-adhesion); and c) evaluation of safety aspects (cytotoxicity assay and Ames test). Overall, we provide a detailed description of the methods that are an essential tool for chemists, computational chemists, microbiologists, and toxicologists in the evaluation of potential novel antimicrobial compounds. These methods are cost-effective and have high predictive value. They are widely used in preclinical studies to identify new molecular candidates, for further investigation in animal and human trials.",
publisher = "Frontiers",
journal = "Frontiers in Cellular and Infection Microbiology",
title = "Evaluation of novel compounds as anti-bacterial or anti-virulence agents",
volume = "14",
doi = "10.3389/fcimb.2024.1370062"
}

Filipić, B., Ušjak, D., Rambaher, M. H., Oljacic, S.,& Milenković, M.. (2024). Evaluation of novel compounds as anti-bacterial or anti-virulence agents. in Frontiers in Cellular and Infection Microbiology
Frontiers., 14.
https://doi.org/10.3389/fcimb.2024.1370062

Filipić B, Ušjak D, Rambaher MH, Oljacic S, Milenković M. Evaluation of novel compounds as anti-bacterial or anti-virulence agents. in Frontiers in Cellular and Infection Microbiology. 2024;14.
doi:10.3389/fcimb.2024.1370062 .

Filipić, Brankica, Ušjak, Dušan, Rambaher, Martina Hrast, Oljacic, Slavica, Milenković, Marina, "Evaluation of novel compounds as anti-bacterial or anti-virulence agents" in Frontiers in Cellular and Infection Microbiology, 14 (2024),
https://doi.org/10.3389/fcimb.2024.1370062 . .

TY  - JOUR
AU  - Mićović, Tijana
AU  - Ušjak, Dušan
AU  - Milenković, Marina
AU  - Samardžić, Stevan
AU  - Maksimović, Zoran
PY  - 2024
UR  - https://www.lekovitesirovine.rs/article/173
UR  - https://imagine.imgge.bg.ac.rs/handle/123456789/2336
AB  - In this study, antimicrobial activity of essential oils extracted from the aerial flowering parts (herbs) of Hyssopus officinalis subsp. aristatus (Godr.) Nyman (Lamiaceae) collected from five different locations in Montenegro, or purchased in Serbia, were investigated. In addition, their antibacterial activity in combination with antibiotics was studied. The antimicrobial activity against selected standard bacterial and yeast strains was investigated using the broth microdilution method. Two standard antibiotics were used for comparison: the aminoglycoside antibiotic amikacin and the cephalosporin antibiotic ceftriaxone. The antimicrobial activity of the essential oil-amikacin combination was investigated using the checkerboard assay. The main components of the essential oils were 1,8-cineole, cis-pinocamphone, β-pinene and limonene in varying quantities. Most of the tested essential oils showed no significant antimicrobial activity. However, an essential oil rich in cis-pinocamphone showed moderate activity against both Staphylococcus aureus and Escherichia coli (MIC = 400 µg/mL). The overall effect of the essential oils and antibiotic combinations against E. coli or S. aureus ranged from additive (FICI = 0.625) to indifferent (FICI = 1.5), depending on the source of the essential oil.
PB  - Institute for Medicinal Plants Research "Dr. Josif Pancic"
T2  - Lekovite Sirovine
T1  - Antimicrobial activity of Hyssopus officinalis L. subsp. aristatus (Godr.) Nyman (Lamiaceae) essential oils from Montenegro and Serbia
EP  - 6
IS  - 1
SP  - 1
VL  - 43
DO  - 10.61652/leksir2343e173M
ER  - 

@article{
author = "Mićović, Tijana and Ušjak, Dušan and Milenković, Marina and Samardžić, Stevan and Maksimović, Zoran",
year = "2024",
abstract = "In this study, antimicrobial activity of essential oils extracted from the aerial flowering parts (herbs) of Hyssopus officinalis subsp. aristatus (Godr.) Nyman (Lamiaceae) collected from five different locations in Montenegro, or purchased in Serbia, were investigated. In addition, their antibacterial activity in combination with antibiotics was studied. The antimicrobial activity against selected standard bacterial and yeast strains was investigated using the broth microdilution method. Two standard antibiotics were used for comparison: the aminoglycoside antibiotic amikacin and the cephalosporin antibiotic ceftriaxone. The antimicrobial activity of the essential oil-amikacin combination was investigated using the checkerboard assay. The main components of the essential oils were 1,8-cineole, cis-pinocamphone, β-pinene and limonene in varying quantities. Most of the tested essential oils showed no significant antimicrobial activity. However, an essential oil rich in cis-pinocamphone showed moderate activity against both Staphylococcus aureus and Escherichia coli (MIC = 400 µg/mL). The overall effect of the essential oils and antibiotic combinations against E. coli or S. aureus ranged from additive (FICI = 0.625) to indifferent (FICI = 1.5), depending on the source of the essential oil.",
publisher = "Institute for Medicinal Plants Research "Dr. Josif Pancic"",
journal = "Lekovite Sirovine",
title = "Antimicrobial activity of Hyssopus officinalis L. subsp. aristatus (Godr.) Nyman (Lamiaceae) essential oils from Montenegro and Serbia",
pages = "6-1",
number = "1",
volume = "43",
doi = "10.61652/leksir2343e173M"
}

Mićović, T., Ušjak, D., Milenković, M., Samardžić, S.,& Maksimović, Z.. (2024). Antimicrobial activity of Hyssopus officinalis L. subsp. aristatus (Godr.) Nyman (Lamiaceae) essential oils from Montenegro and Serbia. in Lekovite Sirovine
Institute for Medicinal Plants Research "Dr. Josif Pancic"., 43(1), 1-6.
https://doi.org/10.61652/leksir2343e173M

Mićović T, Ušjak D, Milenković M, Samardžić S, Maksimović Z. Antimicrobial activity of Hyssopus officinalis L. subsp. aristatus (Godr.) Nyman (Lamiaceae) essential oils from Montenegro and Serbia. in Lekovite Sirovine. 2024;43(1):1-6.
doi:10.61652/leksir2343e173M .

Mićović, Tijana, Ušjak, Dušan, Milenković, Marina, Samardžić, Stevan, Maksimović, Zoran, "Antimicrobial activity of Hyssopus officinalis L. subsp. aristatus (Godr.) Nyman (Lamiaceae) essential oils from Montenegro and Serbia" in Lekovite Sirovine, 43, no. 1 (2024):1-6,
https://doi.org/10.61652/leksir2343e173M . .

TY  - JOUR
AU  - Milovanovic, V.
AU  - Topic, A.
AU  - Milinkovic, N.
AU  - Lazic, Z.
AU  - Ivosevic, A.
AU  - Radojkovic, D.
AU  - Divac Rankov, Aleksandra
PY  - 2024
UR  - https://imagine.imgge.bg.ac.rs/handle/123456789/1647
AB  - ObjectiveChronic obstructive pulmonary disease (COPD) is multi–factorial disorder which results from environmental influences and genetic factors. We aimed to investigate whether methionine sulfoxide reductase A (MSRA) rs10903323 gene polymorphism is associated with COPD development and severity in Serbian adult population.MethodsThe study included 155 patients with COPD and 134 healthy volunteers. Genotyping was determined performing home-made polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). The difference between the inhibitory activities of normal and oxidized Alpha-1-Antitrypsin (A1AT) against elastase and trypsin was used for determination of Oxidized Alpha-1-Antitrypsin (OxyA1AT) (expressed as % and g/L). Functional activity of A1AT was presented as a specific inhibitor activity to elastase (SIA-Elastase, kU/g).ResultsFrequencies of the genotypes AA, AG and GG were 80.0%, 20.0%, 0% in COPD patients and 80.5%, 18.5% and 1.5% in the control group, and there was no significant difference in genotype or allele distributions between groups. Serum level of A1AT (g/L) and OxyA1AT was significantly higher in COPD patients than in the control group, but functional activity of A1AT (SIA-Elastase) was significantly lower in COPD patients than in the control group. In COPD group, increased level of OxyA1AT was present in G allele carriers who were smokers relative to G allele carriers who were not smokers. In the smoker group of patients with severe and very severe COPD (GOLD3+4), significant increase in OxyA1AT level was present in G allele carriers compared to AA homozygotes.ConclusionThese findings suggest that MSRA rs10903323 gene polymorphism is probably not a risk for COPD by itself but could represent a COPD modifier, since minor, G allele, is associated with an increased level of oxidized A1AT, indicating impaired ability of MSRA to repair oxidized A1AT in COPD-smokers, and in severe form of COPD.
PB  - Elsevier
T2  - Pulmonology
T2  - Pulmonology
T1  - Association of the methionine sulfoxide reductase A rs10903323 gene polymorphism with functional activity and oxidative modification of alpha-1-antitrypsin in COPD patients
EP  - 129
IS  - 2
SP  - 122
VL  - 30
DO  - 10.1016/j.pulmoe.2021.09.003
ER  - 

@article{
author = "Milovanovic, V. and Topic, A. and Milinkovic, N. and Lazic, Z. and Ivosevic, A. and Radojkovic, D. and Divac Rankov, Aleksandra",
year = "2024",
abstract = "ObjectiveChronic obstructive pulmonary disease (COPD) is multi–factorial disorder which results from environmental influences and genetic factors. We aimed to investigate whether methionine sulfoxide reductase A (MSRA) rs10903323 gene polymorphism is associated with COPD development and severity in Serbian adult population.MethodsThe study included 155 patients with COPD and 134 healthy volunteers. Genotyping was determined performing home-made polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). The difference between the inhibitory activities of normal and oxidized Alpha-1-Antitrypsin (A1AT) against elastase and trypsin was used for determination of Oxidized Alpha-1-Antitrypsin (OxyA1AT) (expressed as % and g/L). Functional activity of A1AT was presented as a specific inhibitor activity to elastase (SIA-Elastase, kU/g).ResultsFrequencies of the genotypes AA, AG and GG were 80.0%, 20.0%, 0% in COPD patients and 80.5%, 18.5% and 1.5% in the control group, and there was no significant difference in genotype or allele distributions between groups. Serum level of A1AT (g/L) and OxyA1AT was significantly higher in COPD patients than in the control group, but functional activity of A1AT (SIA-Elastase) was significantly lower in COPD patients than in the control group. In COPD group, increased level of OxyA1AT was present in G allele carriers who were smokers relative to G allele carriers who were not smokers. In the smoker group of patients with severe and very severe COPD (GOLD3+4), significant increase in OxyA1AT level was present in G allele carriers compared to AA homozygotes.ConclusionThese findings suggest that MSRA rs10903323 gene polymorphism is probably not a risk for COPD by itself but could represent a COPD modifier, since minor, G allele, is associated with an increased level of oxidized A1AT, indicating impaired ability of MSRA to repair oxidized A1AT in COPD-smokers, and in severe form of COPD.",
publisher = "Elsevier",
journal = "Pulmonology, Pulmonology",
title = "Association of the methionine sulfoxide reductase A rs10903323 gene polymorphism with functional activity and oxidative modification of alpha-1-antitrypsin in COPD patients",
pages = "129-122",
number = "2",
volume = "30",
doi = "10.1016/j.pulmoe.2021.09.003"
}

Milovanovic, V., Topic, A., Milinkovic, N., Lazic, Z., Ivosevic, A., Radojkovic, D.,& Divac Rankov, A.. (2024). Association of the methionine sulfoxide reductase A rs10903323 gene polymorphism with functional activity and oxidative modification of alpha-1-antitrypsin in COPD patients. in Pulmonology
Elsevier., 30(2), 122-129.
https://doi.org/10.1016/j.pulmoe.2021.09.003

Milovanovic V, Topic A, Milinkovic N, Lazic Z, Ivosevic A, Radojkovic D, Divac Rankov A. Association of the methionine sulfoxide reductase A rs10903323 gene polymorphism with functional activity and oxidative modification of alpha-1-antitrypsin in COPD patients. in Pulmonology. 2024;30(2):122-129.
doi:10.1016/j.pulmoe.2021.09.003 .

Milovanovic, V., Topic, A., Milinkovic, N., Lazic, Z., Ivosevic, A., Radojkovic, D., Divac Rankov, Aleksandra, "Association of the methionine sulfoxide reductase A rs10903323 gene polymorphism with functional activity and oxidative modification of alpha-1-antitrypsin in COPD patients" in Pulmonology, 30, no. 2 (2024):122-129,
https://doi.org/10.1016/j.pulmoe.2021.09.003 . .

TY  - DATA
AU  - Novović, Katarina
AU  - Kuzmanović Nedeljković, Snežana
AU  - Poledica, Mirjana
AU  - Nikolić, Gordana
AU  - Grujić, Bojana
AU  - Jovčić, Branko
AU  - Kojić, Milan
AU  - Filipić, Brankica
PY  - 2023
UR  - https://imagine.imgge.bg.ac.rs/handle/123456789/1783
T2  - Frontiers in Microbiology
T2  - Frontiers in Microbiology
T1  - Supplementary information for the article: Novović, K., Kuzmanović Nedeljković, S., Poledica, M., Nikolić, G., Grujić, B., Jovčić, B., Kojić, M., & Filipić, B. (2023). Virulence potential of multidrug-resistant Acinetobacter baumannii isolates from COVID-19 patients on mechanical ventilation: The first report from Serbia. Frontiers in Microbiology, 14. https://www.frontiersin.org/articles/10.3389/fmicb.2023.1094184
UR  - https://hdl.handle.net/21.15107/rcub_imagine_1783
ER  - 

@misc{
author = "Novović, Katarina and Kuzmanović Nedeljković, Snežana and Poledica, Mirjana and Nikolić, Gordana and Grujić, Bojana and Jovčić, Branko and Kojić, Milan and Filipić, Brankica",
year = "2023",
journal = "Frontiers in Microbiology, Frontiers in Microbiology",
title = "Supplementary information for the article: Novović, K., Kuzmanović Nedeljković, S., Poledica, M., Nikolić, G., Grujić, B., Jovčić, B., Kojić, M., & Filipić, B. (2023). Virulence potential of multidrug-resistant Acinetobacter baumannii isolates from COVID-19 patients on mechanical ventilation: The first report from Serbia. Frontiers in Microbiology, 14. https://www.frontiersin.org/articles/10.3389/fmicb.2023.1094184",
url = "https://hdl.handle.net/21.15107/rcub_imagine_1783"
}

Novović, K., Kuzmanović Nedeljković, S., Poledica, M., Nikolić, G., Grujić, B., Jovčić, B., Kojić, M.,& Filipić, B.. (2023). Supplementary information for the article: Novović, K., Kuzmanović Nedeljković, S., Poledica, M., Nikolić, G., Grujić, B., Jovčić, B., Kojić, M., & Filipić, B. (2023). Virulence potential of multidrug-resistant Acinetobacter baumannii isolates from COVID-19 patients on mechanical ventilation: The first report from Serbia. Frontiers in Microbiology, 14. https://www.frontiersin.org/articles/10.3389/fmicb.2023.1094184. in Frontiers in Microbiology.
https://hdl.handle.net/21.15107/rcub_imagine_1783

Novović K, Kuzmanović Nedeljković S, Poledica M, Nikolić G, Grujić B, Jovčić B, Kojić M, Filipić B. Supplementary information for the article: Novović, K., Kuzmanović Nedeljković, S., Poledica, M., Nikolić, G., Grujić, B., Jovčić, B., Kojić, M., & Filipić, B. (2023). Virulence potential of multidrug-resistant Acinetobacter baumannii isolates from COVID-19 patients on mechanical ventilation: The first report from Serbia. Frontiers in Microbiology, 14. https://www.frontiersin.org/articles/10.3389/fmicb.2023.1094184. in Frontiers in Microbiology. 2023;.
https://hdl.handle.net/21.15107/rcub_imagine_1783 .

Novović, Katarina, Kuzmanović Nedeljković, Snežana, Poledica, Mirjana, Nikolić, Gordana, Grujić, Bojana, Jovčić, Branko, Kojić, Milan, Filipić, Brankica, "Supplementary information for the article: Novović, K., Kuzmanović Nedeljković, S., Poledica, M., Nikolić, G., Grujić, B., Jovčić, B., Kojić, M., & Filipić, B. (2023). Virulence potential of multidrug-resistant Acinetobacter baumannii isolates from COVID-19 patients on mechanical ventilation: The first report from Serbia. Frontiers in Microbiology, 14. https://www.frontiersin.org/articles/10.3389/fmicb.2023.1094184" in Frontiers in Microbiology (2023),
https://hdl.handle.net/21.15107/rcub_imagine_1783 .

TY  - JOUR
AU  - Novović, Katarina
AU  - Kuzmanović Nedeljković, Snežana
AU  - Poledica, Mirjana
AU  - Nikolić, Gordana
AU  - Grujić, Bojana
AU  - Jovčić, Branko
AU  - Kojić, Milan
AU  - Filipić, Brankica
PY  - 2023
UR  - https://www.frontiersin.org/articles/10.3389/fmicb.2023.1094184
UR  - https://imagine.imgge.bg.ac.rs/handle/123456789/1782
AB  - Since the WHO declared the COVID-19 pandemic in March 2020, the disease has spread rapidly leading to overload of the health system and many of the patients infected with SARS-CoV-2 needed to be admitted to the intensive care unit (ICU). Around 10% of patients with the severe manifestation of COVID-19 need noninvasive or invasive mechanical ventilation, which represent a risk factor for Acinetobacter baumannii superinfection. The 64 A. baumannii isolates were recovered from COVID-19 patients admitted to ICU at General Hospital “Dr Laza K. Lazarević” Šabac, Serbia, during the period from December 2020 to February 2021. All patients required mechanical ventilation and mortality rate was 100%. The goal of this study was to evaluate antibiotic resistance profiles and virulence potential of A. baumannii isolates recovered from patients with severe form of COVID-19 who had a need for mechanical ventilation. All tested A. baumannii isolates (n = 64) were sensitive to colistin, while resistant to meropenem, imipenem, gentamicin, tobramycin, and levofloxacin according to the broth microdilution method and MDR phenotype was confirmed. In all tested isolates, representatives of international clone 2 (IC2) classified by multiplex PCR for clonal lineage identification, blaAmpC, blaOXA-51, and blaOXA-23 genes were present, as well as ISAba1 insertion sequence upstream of blaOXA-23. Clonal distribution of one dominant strain was found, but individual strains showed phenotypic differences in the level of antibiotic resistance, biofilm formation, and binding to mucin and motility. According to PFGE, four isolates were sequenced and antibiotic resistance genes as well as virulence factors genes were analyzed in these genomes. The results of this study represent the first report on virulence potential of MDR A. baumannii from hospital in Serbia.
T2  - Frontiers in Microbiology
T2  - Frontiers in Microbiology
T1  - Virulence potential of multidrug-resistant Acinetobacter baumannii isolates from COVID-19 patients on mechanical ventilation: The first report from Serbia
VL  - 14
DO  - 10.3389/fmicb.2023.1094184
ER  - 

@article{
author = "Novović, Katarina and Kuzmanović Nedeljković, Snežana and Poledica, Mirjana and Nikolić, Gordana and Grujić, Bojana and Jovčić, Branko and Kojić, Milan and Filipić, Brankica",
year = "2023",
abstract = "Since the WHO declared the COVID-19 pandemic in March 2020, the disease has spread rapidly leading to overload of the health system and many of the patients infected with SARS-CoV-2 needed to be admitted to the intensive care unit (ICU). Around 10% of patients with the severe manifestation of COVID-19 need noninvasive or invasive mechanical ventilation, which represent a risk factor for Acinetobacter baumannii superinfection. The 64 A. baumannii isolates were recovered from COVID-19 patients admitted to ICU at General Hospital “Dr Laza K. Lazarević” Šabac, Serbia, during the period from December 2020 to February 2021. All patients required mechanical ventilation and mortality rate was 100%. The goal of this study was to evaluate antibiotic resistance profiles and virulence potential of A. baumannii isolates recovered from patients with severe form of COVID-19 who had a need for mechanical ventilation. All tested A. baumannii isolates (n = 64) were sensitive to colistin, while resistant to meropenem, imipenem, gentamicin, tobramycin, and levofloxacin according to the broth microdilution method and MDR phenotype was confirmed. In all tested isolates, representatives of international clone 2 (IC2) classified by multiplex PCR for clonal lineage identification, blaAmpC, blaOXA-51, and blaOXA-23 genes were present, as well as ISAba1 insertion sequence upstream of blaOXA-23. Clonal distribution of one dominant strain was found, but individual strains showed phenotypic differences in the level of antibiotic resistance, biofilm formation, and binding to mucin and motility. According to PFGE, four isolates were sequenced and antibiotic resistance genes as well as virulence factors genes were analyzed in these genomes. The results of this study represent the first report on virulence potential of MDR A. baumannii from hospital in Serbia.",
journal = "Frontiers in Microbiology, Frontiers in Microbiology",
title = "Virulence potential of multidrug-resistant Acinetobacter baumannii isolates from COVID-19 patients on mechanical ventilation: The first report from Serbia",
volume = "14",
doi = "10.3389/fmicb.2023.1094184"
}

Novović, K., Kuzmanović Nedeljković, S., Poledica, M., Nikolić, G., Grujić, B., Jovčić, B., Kojić, M.,& Filipić, B.. (2023). Virulence potential of multidrug-resistant Acinetobacter baumannii isolates from COVID-19 patients on mechanical ventilation: The first report from Serbia. in Frontiers in Microbiology, 14.
https://doi.org/10.3389/fmicb.2023.1094184

Novović K, Kuzmanović Nedeljković S, Poledica M, Nikolić G, Grujić B, Jovčić B, Kojić M, Filipić B. Virulence potential of multidrug-resistant Acinetobacter baumannii isolates from COVID-19 patients on mechanical ventilation: The first report from Serbia. in Frontiers in Microbiology. 2023;14.
doi:10.3389/fmicb.2023.1094184 .

Novović, Katarina, Kuzmanović Nedeljković, Snežana, Poledica, Mirjana, Nikolić, Gordana, Grujić, Bojana, Jovčić, Branko, Kojić, Milan, Filipić, Brankica, "Virulence potential of multidrug-resistant Acinetobacter baumannii isolates from COVID-19 patients on mechanical ventilation: The first report from Serbia" in Frontiers in Microbiology, 14 (2023),
https://doi.org/10.3389/fmicb.2023.1094184 . .

TY  - JOUR
AU  - Ušjak, Dušan
AU  - Novović, Katarina
AU  - Ivković, Branka
AU  - Tomić, Branko
AU  - Đorđević, Valentina
AU  - Milenković, Marina
PY  - 2023
UR  - https://doi.org/10.1080/08927014.2023.2215693
UR  - https://imagine.imgge.bg.ac.rs/handle/123456789/1896
AB  - Biofilm production facilitates microbial colonization of wounds and catheters. Acinetobacter baumannii produces high levels of biofilm and causes difficult-to-treat nosocomial infections. Candida albicans is another strong biofilm producer which may facilitate A. baumannii adhesion by providing hyphae-mediated OmpA-binding sites. Here we tested the potential of 2′-hydroxychalcones to inhibit dual-species biofilm production of A. baumannii and Candida spp., and further predicted the mechanism of structure-related difference in activity. The results suggest that 2′-hydroxychalcones exhibit potent activity against Candida spp./A. baumannii dual-species biofilm production. Particularly active was trifluoromethyl-substituted derivative (p-CF3), which decreased C. albicans/A. baumannii biomass produced on vein-indwelling parts of the central venous catheterization set by up to 99%. Further, higher OmpA-binding affinity was also calculated for p-CF3, which together with demonstrated significant ompA-downregulating activity, suggests that superior antibiofilm activity of this chalcone against the tested dual-species community of A. baumannii is mediated through the OmpA.
T2  - Biofouling
T2  - Biofouling
T1  - Targeting outer membrane protein A (OmpA) – inhibitory effect of 2′-hydroxychalcone derivatives on Acinetobacter baumannii and Candida albicans dual-species biofilm formation
EP  - 11
SP  - 1
DO  - 10.1080/08927014.2023.2215693
ER  - 

@article{
author = "Ušjak, Dušan and Novović, Katarina and Ivković, Branka and Tomić, Branko and Đorđević, Valentina and Milenković, Marina",
year = "2023",
abstract = "Biofilm production facilitates microbial colonization of wounds and catheters. Acinetobacter baumannii produces high levels of biofilm and causes difficult-to-treat nosocomial infections. Candida albicans is another strong biofilm producer which may facilitate A. baumannii adhesion by providing hyphae-mediated OmpA-binding sites. Here we tested the potential of 2′-hydroxychalcones to inhibit dual-species biofilm production of A. baumannii and Candida spp., and further predicted the mechanism of structure-related difference in activity. The results suggest that 2′-hydroxychalcones exhibit potent activity against Candida spp./A. baumannii dual-species biofilm production. Particularly active was trifluoromethyl-substituted derivative (p-CF3), which decreased C. albicans/A. baumannii biomass produced on vein-indwelling parts of the central venous catheterization set by up to 99%. Further, higher OmpA-binding affinity was also calculated for p-CF3, which together with demonstrated significant ompA-downregulating activity, suggests that superior antibiofilm activity of this chalcone against the tested dual-species community of A. baumannii is mediated through the OmpA.",
journal = "Biofouling, Biofouling",
title = "Targeting outer membrane protein A (OmpA) – inhibitory effect of 2′-hydroxychalcone derivatives on Acinetobacter baumannii and Candida albicans dual-species biofilm formation",
pages = "11-1",
doi = "10.1080/08927014.2023.2215693"
}

Ušjak, D., Novović, K., Ivković, B., Tomić, B., Đorđević, V.,& Milenković, M.. (2023). Targeting outer membrane protein A (OmpA) – inhibitory effect of 2′-hydroxychalcone derivatives on Acinetobacter baumannii and Candida albicans dual-species biofilm formation. in Biofouling, 1-11.
https://doi.org/10.1080/08927014.2023.2215693

Ušjak D, Novović K, Ivković B, Tomić B, Đorđević V, Milenković M. Targeting outer membrane protein A (OmpA) – inhibitory effect of 2′-hydroxychalcone derivatives on Acinetobacter baumannii and Candida albicans dual-species biofilm formation. in Biofouling. 2023;:1-11.
doi:10.1080/08927014.2023.2215693 .

Ušjak, Dušan, Novović, Katarina, Ivković, Branka, Tomić, Branko, Đorđević, Valentina, Milenković, Marina, "Targeting outer membrane protein A (OmpA) – inhibitory effect of 2′-hydroxychalcone derivatives on Acinetobacter baumannii and Candida albicans dual-species biofilm formation" in Biofouling (2023):1-11,
https://doi.org/10.1080/08927014.2023.2215693 . .

TY  - JOUR
AU  - Baralić, Katarina
AU  - Pavić, Aleksandar
AU  - Javorac, Dragana
AU  - Živančević, Katarina
AU  - Božić, Dragica
AU  - Radaković, Nataša
AU  - Antonijević Miljaković, Evica
AU  - Buha Djordjevic, Aleksandra
AU  - Ćurčić, Marijana
AU  - Bulat, Zorica
AU  - Antonijević, Biljana
AU  - Đukić-Ćosić, Danijela
PY  - 2023
UR  - https://imagine.imgge.bg.ac.rs/handle/123456789/1661
AB  - Connections between the mixture containing bis(2- ethylhexyl) phthalate (DEHP), dibutyl phthalate (DBP) and bisphenol A (BPA) and liver injury were explored through in silico investigation and 2 in vivo models. Comparative Toxicogenomics Database (CTD), ShinyGO, ToppCluster and Cytoscape were used for bioinformatic analysis. In vivo subacute study was performed on rats - five groups (n = 6): (1) Control: corn oil, (2) DEHP: 50 mg/kg b.w./day, (3) DBP: 50 mg/kg b.w./day, (4) BPA: 25 mg/kg b.w./day, (5) MIX: DEHP + DBP + BPA. Zebrafish embryos were exposed to the investigated substances in different doses, singularly and combined (binary and ternary mixtures). Liver injury was linked to 75 DEHP, DBP, and BPA genes, mostly connected to inflammation/oxidative stress. In rats, significant alterations in redox status/bioelements and pathohistology were most notable or exclusively present in MIX (probable additive effects). BPA decreased liver area (LA) index in dose-dependent manner. DEHP (< 2 µg/mL) and DBP (≤ 5 µg/mL) reduced LA values, while their higher doses increased LA index. The effect of DBP in binary mixtures led to a lethal outcome at the two highest concentrations, while the hepatotoxicity of DEHP/DBP/BPA mixture was dictated by BPA (confirmed by the benchmark dose analysis).
T2  - Journal of Hazardous Materials
T2  - Journal of Hazardous Materials Journal of Hazardous Materials
T1  - Comprehensive investigation of hepatotoxicity of the mixture containing phthalates and bisphenol A
SP  - 130404
VL  - 445
DO  - 10.1016/j.jhazmat.2022.130404
ER  - 

@article{
author = "Baralić, Katarina and Pavić, Aleksandar and Javorac, Dragana and Živančević, Katarina and Božić, Dragica and Radaković, Nataša and Antonijević Miljaković, Evica and Buha Djordjevic, Aleksandra and Ćurčić, Marijana and Bulat, Zorica and Antonijević, Biljana and Đukić-Ćosić, Danijela",
year = "2023",
abstract = "Connections between the mixture containing bis(2- ethylhexyl) phthalate (DEHP), dibutyl phthalate (DBP) and bisphenol A (BPA) and liver injury were explored through in silico investigation and 2 in vivo models. Comparative Toxicogenomics Database (CTD), ShinyGO, ToppCluster and Cytoscape were used for bioinformatic analysis. In vivo subacute study was performed on rats - five groups (n = 6): (1) Control: corn oil, (2) DEHP: 50 mg/kg b.w./day, (3) DBP: 50 mg/kg b.w./day, (4) BPA: 25 mg/kg b.w./day, (5) MIX: DEHP + DBP + BPA. Zebrafish embryos were exposed to the investigated substances in different doses, singularly and combined (binary and ternary mixtures). Liver injury was linked to 75 DEHP, DBP, and BPA genes, mostly connected to inflammation/oxidative stress. In rats, significant alterations in redox status/bioelements and pathohistology were most notable or exclusively present in MIX (probable additive effects). BPA decreased liver area (LA) index in dose-dependent manner. DEHP (< 2 µg/mL) and DBP (≤ 5 µg/mL) reduced LA values, while their higher doses increased LA index. The effect of DBP in binary mixtures led to a lethal outcome at the two highest concentrations, while the hepatotoxicity of DEHP/DBP/BPA mixture was dictated by BPA (confirmed by the benchmark dose analysis).",
journal = "Journal of Hazardous Materials, Journal of Hazardous Materials Journal of Hazardous Materials",
title = "Comprehensive investigation of hepatotoxicity of the mixture containing phthalates and bisphenol A",
pages = "130404",
volume = "445",
doi = "10.1016/j.jhazmat.2022.130404"
}

Baralić, K., Pavić, A., Javorac, D., Živančević, K., Božić, D., Radaković, N., Antonijević Miljaković, E., Buha Djordjevic, A., Ćurčić, M., Bulat, Z., Antonijević, B.,& Đukić-Ćosić, D.. (2023). Comprehensive investigation of hepatotoxicity of the mixture containing phthalates and bisphenol A. in Journal of Hazardous Materials, 445, 130404.
https://doi.org/10.1016/j.jhazmat.2022.130404

Baralić K, Pavić A, Javorac D, Živančević K, Božić D, Radaković N, Antonijević Miljaković E, Buha Djordjevic A, Ćurčić M, Bulat Z, Antonijević B, Đukić-Ćosić D. Comprehensive investigation of hepatotoxicity of the mixture containing phthalates and bisphenol A. in Journal of Hazardous Materials. 2023;445:130404.
doi:10.1016/j.jhazmat.2022.130404 .

Baralić, Katarina, Pavić, Aleksandar, Javorac, Dragana, Živančević, Katarina, Božić, Dragica, Radaković, Nataša, Antonijević Miljaković, Evica, Buha Djordjevic, Aleksandra, Ćurčić, Marijana, Bulat, Zorica, Antonijević, Biljana, Đukić-Ćosić, Danijela, "Comprehensive investigation of hepatotoxicity of the mixture containing phthalates and bisphenol A" in Journal of Hazardous Materials, 445 (2023):130404,
https://doi.org/10.1016/j.jhazmat.2022.130404 . .

TY  - JOUR
AU  - Filipić, Brankica
AU  - Malešević, Milka
AU  - Vasiljević, Zorica
AU  - Novović, Katarina
AU  - Kojić, Milan
AU  - Jovčić, Branko
PY  - 2022
UR  - https://imagine.imgge.bg.ac.rs/handle/123456789/1778
AB  - Trimethoprim-sulfamethoxazole (SXT) is the preferable treatment option of the infections caused by Achromobacter spp. Our study aimed to analyze the SXT resistance of 98 Achromobacter spp. isolates from pediatric patients, among which 33 isolates were SXT-resistant. The presence of intI1 was screened by PCR and genome sequence analyses. The intI1 gene was detected in 10 of SXT-resistant isolates that had shorter intI1 PCR fragments named intI1S. Structural changes in intI1S were confirmed by genome sequencing and analyses which revealed 86 amino acids deletion in IntI1S protein compared to canonical IntI1 protein. All IntI1S isolates were of non-CF origin. Pan-genome analysis of intI1S bearing A. xylosoxidans isolates comprised 9052 genes, with the core genome consisting of 5455 protein-coding genes. Results in this study indicate that IntI1S isolates were derived from clinical settings and that cystic fibrosis (CF) patients were potential reservoirs for healthcare-associated infections that occurred in non-CF patients.
PB  - Springer Science and Business Media B.V.
T2  - Folia Microbiologica
T1  - Comparative genomics of trimethoprim-sulfamethoxazole-resistant Achromobacter xylosoxidans clinical isolates from Serbia reveals shortened variant of class 1 integron integrase gene
DO  - 10.1007/s12223-022-01026-8
ER  - 

@article{
author = "Filipić, Brankica and Malešević, Milka and Vasiljević, Zorica and Novović, Katarina and Kojić, Milan and Jovčić, Branko",
year = "2022",
abstract = "Trimethoprim-sulfamethoxazole (SXT) is the preferable treatment option of the infections caused by Achromobacter spp. Our study aimed to analyze the SXT resistance of 98 Achromobacter spp. isolates from pediatric patients, among which 33 isolates were SXT-resistant. The presence of intI1 was screened by PCR and genome sequence analyses. The intI1 gene was detected in 10 of SXT-resistant isolates that had shorter intI1 PCR fragments named intI1S. Structural changes in intI1S were confirmed by genome sequencing and analyses which revealed 86 amino acids deletion in IntI1S protein compared to canonical IntI1 protein. All IntI1S isolates were of non-CF origin. Pan-genome analysis of intI1S bearing A. xylosoxidans isolates comprised 9052 genes, with the core genome consisting of 5455 protein-coding genes. Results in this study indicate that IntI1S isolates were derived from clinical settings and that cystic fibrosis (CF) patients were potential reservoirs for healthcare-associated infections that occurred in non-CF patients.",
publisher = "Springer Science and Business Media B.V.",
journal = "Folia Microbiologica",
title = "Comparative genomics of trimethoprim-sulfamethoxazole-resistant Achromobacter xylosoxidans clinical isolates from Serbia reveals shortened variant of class 1 integron integrase gene",
doi = "10.1007/s12223-022-01026-8"
}

Filipić, B., Malešević, M., Vasiljević, Z., Novović, K., Kojić, M.,& Jovčić, B.. (2022). Comparative genomics of trimethoprim-sulfamethoxazole-resistant Achromobacter xylosoxidans clinical isolates from Serbia reveals shortened variant of class 1 integron integrase gene. in Folia Microbiologica
Springer Science and Business Media B.V...
https://doi.org/10.1007/s12223-022-01026-8

Filipić B, Malešević M, Vasiljević Z, Novović K, Kojić M, Jovčić B. Comparative genomics of trimethoprim-sulfamethoxazole-resistant Achromobacter xylosoxidans clinical isolates from Serbia reveals shortened variant of class 1 integron integrase gene. in Folia Microbiologica. 2022;.
doi:10.1007/s12223-022-01026-8 .

Filipić, Brankica, Malešević, Milka, Vasiljević, Zorica, Novović, Katarina, Kojić, Milan, Jovčić, Branko, "Comparative genomics of trimethoprim-sulfamethoxazole-resistant Achromobacter xylosoxidans clinical isolates from Serbia reveals shortened variant of class 1 integron integrase gene" in Folia Microbiologica (2022),
https://doi.org/10.1007/s12223-022-01026-8 . .

TY  - JOUR
AU  - Simić, Milena R.
AU  - Erić, Slavica
AU  - Borić, Ivan
AU  - Lubelska, Annamaria
AU  - Latacz, Gniewomir
AU  - Kiec-Kononowicz, Katarzyna
AU  - Vojnović, Sandra
AU  - Nikodinović-Runić, Jasmina
AU  - Savić, Vladimir M.
PY  - 2021
UR  - https://imagine.imgge.bg.ac.rs/handle/123456789/1498
AB  - In the continuation of our study of substituted isocoumarins a series of novel 3-azolyl isocoumarin and their thio derivatives, including some related lactone compounds was prepared and biologically profiled against C. albicans showing moderate activity with MIC values in range of 4-60 mu g mL(-1), in general. The additional characterisation of selected compounds was carried out by exploring their activity on CYP3A4 and CYP2D6 enzymes, while experiments on mutagenicity were performed by AMES test. The representative isocoumarins 3b, 4a and 4b showed lower inhibitory activity on CYP enzymes, when compared to the reference inhibitors, ketoconazole and quinidine. Compound 4a showed a higher mutagenic potential than the other two compounds. Further characterization included cytotoxicity profiling against normal MRC5 cells.
PB  - Srpsko hemijsko društvo, Beograd
T2  - Journal of the Serbian Chemical Society
T1  - Synthesis and biological profiling of novel isocoumarin derivatives and related compounds
EP  - 649
IS  - 7-8
SP  - 639
VL  - 86
DO  - 10.2298/JSC201201025S
ER  - 

@article{
author = "Simić, Milena R. and Erić, Slavica and Borić, Ivan and Lubelska, Annamaria and Latacz, Gniewomir and Kiec-Kononowicz, Katarzyna and Vojnović, Sandra and Nikodinović-Runić, Jasmina and Savić, Vladimir M.",
year = "2021",
abstract = "In the continuation of our study of substituted isocoumarins a series of novel 3-azolyl isocoumarin and their thio derivatives, including some related lactone compounds was prepared and biologically profiled against C. albicans showing moderate activity with MIC values in range of 4-60 mu g mL(-1), in general. The additional characterisation of selected compounds was carried out by exploring their activity on CYP3A4 and CYP2D6 enzymes, while experiments on mutagenicity were performed by AMES test. The representative isocoumarins 3b, 4a and 4b showed lower inhibitory activity on CYP enzymes, when compared to the reference inhibitors, ketoconazole and quinidine. Compound 4a showed a higher mutagenic potential than the other two compounds. Further characterization included cytotoxicity profiling against normal MRC5 cells.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of the Serbian Chemical Society",
title = "Synthesis and biological profiling of novel isocoumarin derivatives and related compounds",
pages = "649-639",
number = "7-8",
volume = "86",
doi = "10.2298/JSC201201025S"
}

Simić, M. R., Erić, S., Borić, I., Lubelska, A., Latacz, G., Kiec-Kononowicz, K., Vojnović, S., Nikodinović-Runić, J.,& Savić, V. M.. (2021). Synthesis and biological profiling of novel isocoumarin derivatives and related compounds. in Journal of the Serbian Chemical Society
Srpsko hemijsko društvo, Beograd., 86(7-8), 639-649.
https://doi.org/10.2298/JSC201201025S

Simić MR, Erić S, Borić I, Lubelska A, Latacz G, Kiec-Kononowicz K, Vojnović S, Nikodinović-Runić J, Savić VM. Synthesis and biological profiling of novel isocoumarin derivatives and related compounds. in Journal of the Serbian Chemical Society. 2021;86(7-8):639-649.
doi:10.2298/JSC201201025S .

Simić, Milena R., Erić, Slavica, Borić, Ivan, Lubelska, Annamaria, Latacz, Gniewomir, Kiec-Kononowicz, Katarzyna, Vojnović, Sandra, Nikodinović-Runić, Jasmina, Savić, Vladimir M., "Synthesis and biological profiling of novel isocoumarin derivatives and related compounds" in Journal of the Serbian Chemical Society, 86, no. 7-8 (2021):639-649,
https://doi.org/10.2298/JSC201201025S . .

TY  - JOUR
AU  - Ilić, M.
AU  - Samardžić, S.
AU  - Kotur-Stevuljević, J.
AU  - Ušjak, D.
AU  - Milenković, M.
AU  - Kovačević, N.
AU  - Drobac, M.
PY  - 2021
UR  - https://imagine.imgge.bg.ac.rs/handle/123456789/1771
AB  - OBJECTIVE: Plants and plant extracts are of great scientific interest due to the
chemical diversity and pharmacological properties of present bioactive molecules. The Geranium L. species are widely used in ethnomedicine. In the current study, the total phenolic and
tannin content, antioxidant and antimicrobial
activity of methanol extracts of eight Geranium
species were investigated.
MATERIALS AND METHODS: The total phenolic and tannin content were determined by the
FC method. Antioxidant capacity was evaluated
in FRAP, DPPH, and biochemical assays, while
antimicrobial activity was examined using the
broth microdilution method.
RESULTS: The high total phenolic (170.64-
636.32 mg GAE/g dry extract) and tannin content (37.80-414.02 mg GAE/g DE), along with significant total antioxidant (FRAP values 1.13-8.80
mmol Fe2+/g) and DPPH radical scavenging activity (SC50 values 4.24-34.52 µg/mL) were observed. The prominent antioxidant capacity was
confirmed in biochemical assays (OS values -1.47
– -13.02). The extracts exhibited significant antimicrobial activity against ATTC strains (MICs
dominantly in the range of 12.5-200 µg/mL) as
well as against clinical isolates of E. coli (MICs
mostly 50 and 100 µg/mL). The pronounced antioxidant and antimicrobial activity can be due to
the high phenolic content, particularly due to the
presence of hydrolyzable tannins.
CONCLUSIONS: Based on the high content of
polyphenols, pronounced antioxidant and antimicrobial activities, the examined extracts are
promising natural antioxidant and antimicrobial
agents with the potential medicinal purpose and
use as a functional food.
PB  - Roma : Verduci Editore
T2  - European Review for Medical and Pharmacological Sciences
T1  - Polyphenol rich extracts of Geranium L. species as potential natural antioxidant and antimicrobial agents
EP  - 6294
IS  - 20
SP  - 6283
VL  - 25
DO  - 10.26355/eurrev_202110_26998
ER  - 

@article{
author = "Ilić, M. and Samardžić, S. and Kotur-Stevuljević, J. and Ušjak, D. and Milenković, M. and Kovačević, N. and Drobac, M.",
year = "2021",
abstract = "OBJECTIVE: Plants and plant extracts are of great scientific interest due to the
chemical diversity and pharmacological properties of present bioactive molecules. The Geranium L. species are widely used in ethnomedicine. In the current study, the total phenolic and
tannin content, antioxidant and antimicrobial
activity of methanol extracts of eight Geranium
species were investigated.
MATERIALS AND METHODS: The total phenolic and tannin content were determined by the
FC method. Antioxidant capacity was evaluated
in FRAP, DPPH, and biochemical assays, while
antimicrobial activity was examined using the
broth microdilution method.
RESULTS: The high total phenolic (170.64-
636.32 mg GAE/g dry extract) and tannin content (37.80-414.02 mg GAE/g DE), along with significant total antioxidant (FRAP values 1.13-8.80
mmol Fe2+/g) and DPPH radical scavenging activity (SC50 values 4.24-34.52 µg/mL) were observed. The prominent antioxidant capacity was
confirmed in biochemical assays (OS values -1.47
– -13.02). The extracts exhibited significant antimicrobial activity against ATTC strains (MICs
dominantly in the range of 12.5-200 µg/mL) as
well as against clinical isolates of E. coli (MICs
mostly 50 and 100 µg/mL). The pronounced antioxidant and antimicrobial activity can be due to
the high phenolic content, particularly due to the
presence of hydrolyzable tannins.
CONCLUSIONS: Based on the high content of
polyphenols, pronounced antioxidant and antimicrobial activities, the examined extracts are
promising natural antioxidant and antimicrobial
agents with the potential medicinal purpose and
use as a functional food.",
publisher = "Roma : Verduci Editore",
journal = "European Review for Medical and Pharmacological Sciences",
title = "Polyphenol rich extracts of Geranium L. species as potential natural antioxidant and antimicrobial agents",
pages = "6294-6283",
number = "20",
volume = "25",
doi = "10.26355/eurrev_202110_26998"
}

Ilić, M., Samardžić, S., Kotur-Stevuljević, J., Ušjak, D., Milenković, M., Kovačević, N.,& Drobac, M.. (2021). Polyphenol rich extracts of Geranium L. species as potential natural antioxidant and antimicrobial agents. in European Review for Medical and Pharmacological Sciences
Roma : Verduci Editore., 25(20), 6283-6294.
https://doi.org/10.26355/eurrev_202110_26998

Ilić M, Samardžić S, Kotur-Stevuljević J, Ušjak D, Milenković M, Kovačević N, Drobac M. Polyphenol rich extracts of Geranium L. species as potential natural antioxidant and antimicrobial agents. in European Review for Medical and Pharmacological Sciences. 2021;25(20):6283-6294.
doi:10.26355/eurrev_202110_26998 .

Ilić, M., Samardžić, S., Kotur-Stevuljević, J., Ušjak, D., Milenković, M., Kovačević, N., Drobac, M., "Polyphenol rich extracts of Geranium L. species as potential natural antioxidant and antimicrobial agents" in European Review for Medical and Pharmacological Sciences, 25, no. 20 (2021):6283-6294,
https://doi.org/10.26355/eurrev_202110_26998 . .