TY  - JOUR
AU  - Holclajtner-Antunović, Ivanka
AU  - Bajuk-Bogdanović, Danica
AU  - Todorović, Marija R.
AU  - Mioč, Ubavka B.
AU  - Zakrzewska, Joanna
AU  - Uskoković-Marković, Snežana
PY  - 2008
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/1031
AB  - The various molecular species of 12-tungstophosporic acid (WPA) in aqueous solutions of different pH values (from 1 to 11.5) were investigated by UV, IR, and NMR spectroscopy. The dependence of the attained equilibrium composition in solution on time, concentration of WPA, and type of buffer used was studied. Obtained results indicate that the buffer type and pH value greatly determine the equilibrium composition in the solution. The Keggin structure of the WPA is sustained only up to pH 1.5. With further increase in pH, the decomposition of Keggin anion does not lead directly to the monovacant lacunary anion. Between 1.5 and 2.0. the structures with 2 phosphorus atoms from the Dawson series are dominant as intermediate species. In the pH range 3.5-7.5, WPA is present in the form of the monovacant lacunary Keggin anion. These results are of special importance for the biomedical and catalytic applications of heteropoly compounds (HPCs) and for an improved understanding of the mechanism of their functioning.
PB  - Canadian Science Publishing, Nrc Research Press, Ottawa
T2  - Canadian Journal of Chemistry
T1  - Sectroscopic study of stability and molecular species of 12-tungstophosphoric acid in aqueous solution
VL  - 86
IS  - 10
SP  - 996
EP  - 1004
DO  - 10.1139/V08-138
ER  - 

@article{
author = "Holclajtner-Antunović, Ivanka and Bajuk-Bogdanović, Danica and Todorović, Marija R. and Mioč, Ubavka B. and Zakrzewska, Joanna and Uskoković-Marković, Snežana",
year = "2008",
abstract = "The various molecular species of 12-tungstophosporic acid (WPA) in aqueous solutions of different pH values (from 1 to 11.5) were investigated by UV, IR, and NMR spectroscopy. The dependence of the attained equilibrium composition in solution on time, concentration of WPA, and type of buffer used was studied. Obtained results indicate that the buffer type and pH value greatly determine the equilibrium composition in the solution. The Keggin structure of the WPA is sustained only up to pH 1.5. With further increase in pH, the decomposition of Keggin anion does not lead directly to the monovacant lacunary anion. Between 1.5 and 2.0. the structures with 2 phosphorus atoms from the Dawson series are dominant as intermediate species. In the pH range 3.5-7.5, WPA is present in the form of the monovacant lacunary Keggin anion. These results are of special importance for the biomedical and catalytic applications of heteropoly compounds (HPCs) and for an improved understanding of the mechanism of their functioning.",
publisher = "Canadian Science Publishing, Nrc Research Press, Ottawa",
journal = "Canadian Journal of Chemistry",
title = "Sectroscopic study of stability and molecular species of 12-tungstophosphoric acid in aqueous solution",
volume = "86",
number = "10",
pages = "996-1004",
doi = "10.1139/V08-138"
}

Holclajtner-Antunović, I., Bajuk-Bogdanović, D., Todorović, M. R., Mioč, U. B., Zakrzewska, J.,& Uskoković-Marković, S.. (2008). Sectroscopic study of stability and molecular species of 12-tungstophosphoric acid in aqueous solution. in Canadian Journal of Chemistry
Canadian Science Publishing, Nrc Research Press, Ottawa., 86(10), 996-1004.
https://doi.org/10.1139/V08-138

Holclajtner-Antunović I, Bajuk-Bogdanović D, Todorović MR, Mioč UB, Zakrzewska J, Uskoković-Marković S. Sectroscopic study of stability and molecular species of 12-tungstophosphoric acid in aqueous solution. in Canadian Journal of Chemistry. 2008;86(10):996-1004.
doi:10.1139/V08-138 .

Holclajtner-Antunović, Ivanka, Bajuk-Bogdanović, Danica, Todorović, Marija R., Mioč, Ubavka B., Zakrzewska, Joanna, Uskoković-Marković, Snežana, "Sectroscopic study of stability and molecular species of 12-tungstophosphoric acid in aqueous solution" in Canadian Journal of Chemistry, 86, no. 10 (2008):996-1004,
https://doi.org/10.1139/V08-138 . .

TY  - CONF
AU  - Uskoković-Marković, Snežana
AU  - Colomban, Ph.
AU  - Mioč, Ubavka B.
AU  - Todorović, Marija R.
PY  - 2007
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/965
AB  - On the basis of previously recorded Raman and IR spectral data on different crystallohydrates of alkaline-earth 12-tungstophosphoric acid salts (obtained from mother solution and those kept under constant relative humidity (RH) of 35%), an effort was made to determine the position of cations in the Keggin unit. Shifts or band splitting in vibrational spectra of the salts, as well as the changes in band intensities were found to be connected to the cation properties. The spectral data also demonstrated a great influence of cation properties on the secondary structure of Keggin anions and dynamics of protonic species.
PB  - Trans Tech Publications Ltd, Durnten-Zurich
C3  - Current Research in Advanced Materials and Processes
T1  - Investigations of (PO4)/(WO6)(3) - Lattice components of Keggin's anion interaction with cations in alkaline-earth salts of 12-tungstophosphoric acid
VL  - 555
SP  - 201
DO  - 10.4028/www.scientific.net/MSF.555.201
ER  - 

@conference{
author = "Uskoković-Marković, Snežana and Colomban, Ph. and Mioč, Ubavka B. and Todorović, Marija R.",
year = "2007",
abstract = "On the basis of previously recorded Raman and IR spectral data on different crystallohydrates of alkaline-earth 12-tungstophosphoric acid salts (obtained from mother solution and those kept under constant relative humidity (RH) of 35%), an effort was made to determine the position of cations in the Keggin unit. Shifts or band splitting in vibrational spectra of the salts, as well as the changes in band intensities were found to be connected to the cation properties. The spectral data also demonstrated a great influence of cation properties on the secondary structure of Keggin anions and dynamics of protonic species.",
publisher = "Trans Tech Publications Ltd, Durnten-Zurich",
journal = "Current Research in Advanced Materials and Processes",
title = "Investigations of (PO4)/(WO6)(3) - Lattice components of Keggin's anion interaction with cations in alkaline-earth salts of 12-tungstophosphoric acid",
volume = "555",
pages = "201",
doi = "10.4028/www.scientific.net/MSF.555.201"
}

Uskoković-Marković, S., Colomban, Ph., Mioč, U. B.,& Todorović, M. R.. (2007). Investigations of (PO4)/(WO6)(3) - Lattice components of Keggin's anion interaction with cations in alkaline-earth salts of 12-tungstophosphoric acid. in Current Research in Advanced Materials and Processes
Trans Tech Publications Ltd, Durnten-Zurich., 555, 201.
https://doi.org/10.4028/www.scientific.net/MSF.555.201

Uskoković-Marković S, Colomban P, Mioč UB, Todorović MR. Investigations of (PO4)/(WO6)(3) - Lattice components of Keggin's anion interaction with cations in alkaline-earth salts of 12-tungstophosphoric acid. in Current Research in Advanced Materials and Processes. 2007;555:201.
doi:10.4028/www.scientific.net/MSF.555.201 .

Uskoković-Marković, Snežana, Colomban, Ph., Mioč, Ubavka B., Todorović, Marija R., "Investigations of (PO4)/(WO6)(3) - Lattice components of Keggin's anion interaction with cations in alkaline-earth salts of 12-tungstophosphoric acid" in Current Research in Advanced Materials and Processes, 555 (2007):201,
https://doi.org/10.4028/www.scientific.net/MSF.555.201 . .

TY  - CONF
AU  - Uskoković-Marković, Snežana
AU  - Colomban, Ph
AU  - Mioč, Ubavka B.
AU  - Todorović, Marija R.
PY  - 2007
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/993
AB  - On the basis of previously recorded Raman and IR spectral data on different crystallohydrates of alkaline-earth 12-tungstophosphoric acid salts (obtained from mother solution and those kept under constant relative humidity (RH) of 35%), an effort was made to determine the position of cations in the Keggin unit. Shifts or band splitting in vibrational spectra of the salts, as well as the changes in band intensities were found to be connected to the cation properties. The spectral data also demonstrated a great influence of cation properties on the secondary structure of Keggin anions and dynamics of protonic species.
C3  - Current Research in Advanced Materials and Processes
T1  - Investigations of (PO4)/(WO6)3 - Lattice components of Keggin's anion interaction with cations in alkaline-earth salts of 12-tungstophosphoric acid
VL  - 555
SP  - 201
EP  - 206
UR  - https://hdl.handle.net/21.15107/rcub_farfar_993
ER  - 

@conference{
author = "Uskoković-Marković, Snežana and Colomban, Ph and Mioč, Ubavka B. and Todorović, Marija R.",
year = "2007",
abstract = "On the basis of previously recorded Raman and IR spectral data on different crystallohydrates of alkaline-earth 12-tungstophosphoric acid salts (obtained from mother solution and those kept under constant relative humidity (RH) of 35%), an effort was made to determine the position of cations in the Keggin unit. Shifts or band splitting in vibrational spectra of the salts, as well as the changes in band intensities were found to be connected to the cation properties. The spectral data also demonstrated a great influence of cation properties on the secondary structure of Keggin anions and dynamics of protonic species.",
journal = "Current Research in Advanced Materials and Processes",
title = "Investigations of (PO4)/(WO6)3 - Lattice components of Keggin's anion interaction with cations in alkaline-earth salts of 12-tungstophosphoric acid",
volume = "555",
pages = "201-206",
url = "https://hdl.handle.net/21.15107/rcub_farfar_993"
}

Uskoković-Marković, S., Colomban, P., Mioč, U. B.,& Todorović, M. R.. (2007). Investigations of (PO4)/(WO6)3 - Lattice components of Keggin's anion interaction with cations in alkaline-earth salts of 12-tungstophosphoric acid. in Current Research in Advanced Materials and Processes, 555, 201-206.
https://hdl.handle.net/21.15107/rcub_farfar_993

Uskoković-Marković S, Colomban P, Mioč UB, Todorović MR. Investigations of (PO4)/(WO6)3 - Lattice components of Keggin's anion interaction with cations in alkaline-earth salts of 12-tungstophosphoric acid. in Current Research in Advanced Materials and Processes. 2007;555:201-206.
https://hdl.handle.net/21.15107/rcub_farfar_993 .

Uskoković-Marković, Snežana, Colomban, Ph, Mioč, Ubavka B., Todorović, Marija R., "Investigations of (PO4)/(WO6)3 - Lattice components of Keggin's anion interaction with cations in alkaline-earth salts of 12-tungstophosphoric acid" in Current Research in Advanced Materials and Processes, 555 (2007):201-206,
https://hdl.handle.net/21.15107/rcub_farfar_993 .

TY  - JOUR
AU  - Jelikić-Stankov, Milena
AU  - Uskoković-Marković, Snežana
AU  - Holclajtner-Antunović, Ivanka
AU  - Todorović, Marija R.
AU  - Đurđević, Predrag
PY  - 2007
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/912
AB  - Molybdenum, vanadium and tungsten compounds are widely applied as analytical reagents for determination of numerous pharmacologically active substances and different biochemical parameters. Recent data from the available literature pointed to a very potent biomedical activity of compounds containing these trace elements. The present paper represents a survey on the structure and chemical properties of these compounds, as well as on their biological activity, mostly based on their interaction with cations of biomolecules, such as phospholipids and proteins. Besides, their potent inhibitory effects on cellular targets, bacterial and viral DNA and RNA polymerases will be discussed, as well. Numerous authors clearly demonstrated the antiviral (especially anti-HIV), anticoagulant and antineoplastic properties of the compounds containing the above trace elements. It has been also shown that these compounds act on some cellular enzymatic systems leading to the normalisation of blood pressure, blood glucose and serum lipid levels. Also, compounds of these trace elements represent potent antiobesity agents and express hepatoprotective and antioxidative stress activity.
PB  - Elsevier Gmbh, Urban & Fischer Verlag, Jena
T2  - Journal of Trace Elements in Medicine and Biology
T1  - Compounds of Mo, V and W in biochemistry and their biomedical activity
VL  - 21
IS  - 1
SP  - 8
EP  - 16
DO  - 10.1016/j.jtemb.2006.11.004
ER  - 

@article{
author = "Jelikić-Stankov, Milena and Uskoković-Marković, Snežana and Holclajtner-Antunović, Ivanka and Todorović, Marija R. and Đurđević, Predrag",
year = "2007",
abstract = "Molybdenum, vanadium and tungsten compounds are widely applied as analytical reagents for determination of numerous pharmacologically active substances and different biochemical parameters. Recent data from the available literature pointed to a very potent biomedical activity of compounds containing these trace elements. The present paper represents a survey on the structure and chemical properties of these compounds, as well as on their biological activity, mostly based on their interaction with cations of biomolecules, such as phospholipids and proteins. Besides, their potent inhibitory effects on cellular targets, bacterial and viral DNA and RNA polymerases will be discussed, as well. Numerous authors clearly demonstrated the antiviral (especially anti-HIV), anticoagulant and antineoplastic properties of the compounds containing the above trace elements. It has been also shown that these compounds act on some cellular enzymatic systems leading to the normalisation of blood pressure, blood glucose and serum lipid levels. Also, compounds of these trace elements represent potent antiobesity agents and express hepatoprotective and antioxidative stress activity.",
publisher = "Elsevier Gmbh, Urban & Fischer Verlag, Jena",
journal = "Journal of Trace Elements in Medicine and Biology",
title = "Compounds of Mo, V and W in biochemistry and their biomedical activity",
volume = "21",
number = "1",
pages = "8-16",
doi = "10.1016/j.jtemb.2006.11.004"
}

Jelikić-Stankov, M., Uskoković-Marković, S., Holclajtner-Antunović, I., Todorović, M. R.,& Đurđević, P.. (2007). Compounds of Mo, V and W in biochemistry and their biomedical activity. in Journal of Trace Elements in Medicine and Biology
Elsevier Gmbh, Urban & Fischer Verlag, Jena., 21(1), 8-16.
https://doi.org/10.1016/j.jtemb.2006.11.004

Jelikić-Stankov M, Uskoković-Marković S, Holclajtner-Antunović I, Todorović MR, Đurđević P. Compounds of Mo, V and W in biochemistry and their biomedical activity. in Journal of Trace Elements in Medicine and Biology. 2007;21(1):8-16.
doi:10.1016/j.jtemb.2006.11.004 .

Jelikić-Stankov, Milena, Uskoković-Marković, Snežana, Holclajtner-Antunović, Ivanka, Todorović, Marija R., Đurđević, Predrag, "Compounds of Mo, V and W in biochemistry and their biomedical activity" in Journal of Trace Elements in Medicine and Biology, 21, no. 1 (2007):8-16,
https://doi.org/10.1016/j.jtemb.2006.11.004 . .

TY  - JOUR
AU  - Kuntić, Vesna
AU  - Stanojević, Maja
AU  - Holclajtner-Antunović, Ivanka
AU  - Uskoković-Marković, Snežana
AU  - Mioč, Ubavka B.
AU  - Todorović, Marija R.
AU  - Jovanović, Tanja
AU  - Vukojević, Vladana
PY  - 2006
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/837
AB  - Compounds of phosphotungstic acid (WPA) containing the amino acids alanine (WPA-Ala) or glycine (WPA-Gly) as counter cations were synthesized and characterized by elemental analysis, thermal analysis, and IR spectroscopy. Cellular toxicity was assessed by the trypan blue exclusion method, and the antiviral activity of WPA and the modified WPA compounds was tested against herpes simplex viruses (HSV) type 1 and type 2. Biological assays indicate that the newly synthesized compounds exhibit no evident cytotoxic effects on Vero cells and negligible antiviral activity against HSV-1 and HSV-2.
PB  - Springer Wien, Wien
T2  - Monatshefte für Chemie Chemical Monthly
T1  - Synthesis, characterization, and biological activity of amino acid derivatives of the heteropolytungstophosphoric acid
VL  - 137
IS  - 6
SP  - 803
EP  - 810
DO  - 10.1007/s00706-006-0467-3
ER  - 

@article{
author = "Kuntić, Vesna and Stanojević, Maja and Holclajtner-Antunović, Ivanka and Uskoković-Marković, Snežana and Mioč, Ubavka B. and Todorović, Marija R. and Jovanović, Tanja and Vukojević, Vladana",
year = "2006",
abstract = "Compounds of phosphotungstic acid (WPA) containing the amino acids alanine (WPA-Ala) or glycine (WPA-Gly) as counter cations were synthesized and characterized by elemental analysis, thermal analysis, and IR spectroscopy. Cellular toxicity was assessed by the trypan blue exclusion method, and the antiviral activity of WPA and the modified WPA compounds was tested against herpes simplex viruses (HSV) type 1 and type 2. Biological assays indicate that the newly synthesized compounds exhibit no evident cytotoxic effects on Vero cells and negligible antiviral activity against HSV-1 and HSV-2.",
publisher = "Springer Wien, Wien",
journal = "Monatshefte für Chemie Chemical Monthly",
title = "Synthesis, characterization, and biological activity of amino acid derivatives of the heteropolytungstophosphoric acid",
volume = "137",
number = "6",
pages = "803-810",
doi = "10.1007/s00706-006-0467-3"
}

Kuntić, V., Stanojević, M., Holclajtner-Antunović, I., Uskoković-Marković, S., Mioč, U. B., Todorović, M. R., Jovanović, T.,& Vukojević, V.. (2006). Synthesis, characterization, and biological activity of amino acid derivatives of the heteropolytungstophosphoric acid. in Monatshefte für Chemie Chemical Monthly
Springer Wien, Wien., 137(6), 803-810.
https://doi.org/10.1007/s00706-006-0467-3

Kuntić V, Stanojević M, Holclajtner-Antunović I, Uskoković-Marković S, Mioč UB, Todorović MR, Jovanović T, Vukojević V. Synthesis, characterization, and biological activity of amino acid derivatives of the heteropolytungstophosphoric acid. in Monatshefte für Chemie Chemical Monthly. 2006;137(6):803-810.
doi:10.1007/s00706-006-0467-3 .

Kuntić, Vesna, Stanojević, Maja, Holclajtner-Antunović, Ivanka, Uskoković-Marković, Snežana, Mioč, Ubavka B., Todorović, Marija R., Jovanović, Tanja, Vukojević, Vladana, "Synthesis, characterization, and biological activity of amino acid derivatives of the heteropolytungstophosphoric acid" in Monatshefte für Chemie Chemical Monthly, 137, no. 6 (2006):803-810,
https://doi.org/10.1007/s00706-006-0467-3 . .