TY  - JOUR
AU  - Korać Jačić, Jelena
AU  - Bajuk-Bogdanović, Danica
AU  - Savić, Slađana D.
AU  - Božić Cvijan, Bojana
AU  - Spasojević, Milica
AU  - MIlenković, Milica R.
PY  - 2023
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/5881
AB  - Hydralazine (HL), a frequently prescribed oral antihypertensive drug, shows redox interactions with transition metals such as copper that are not fully understood. Copper may be present at high concentrations in the digestive tract and can affect oral drugs. An important parameter for such interactions is pH, which changes from acidic in the gastric juice to neutral pH in intestines. In this study, we examined interactions of HL with Cu2+ ions in conditions that mimic pH shift in the digestive tract using UV–Vis, Raman and EPR spectroscopy, cyclic voltammetry and oximetry. In the acidic solution, Cu2+ formed a stable mononuclear complex with two bidentate coordinated HL molecules. On the other hand, at neutral pH, Cu2+ initiated oxidation and degradation of HL. The degradation was more rapid in the HL-Cu2+ system that was initially prepared at acidic pH and then shifted to neutral pH. The formation of the complex at acidic pH increases the availability of Cu2+ for redox reactions after the shift to neutral pH at which Cu2+ is poorly soluble. These results imply that the change of pH along the digestive tract may promote HL degradation by allowing the formation of the complex at gastric pH which makes Cu2+ available for subsequent oxidation of HL at neutral pH.
PB  - Elsevier
T2  - Journal of Inorganic Biochemistry
T1  - Coordination of hydralazine with Cu2+ at acidic pH promotes its oxidative degradation at neutral pH
VL  - 243
SP  - 112181
DO  - 10.1016/j.jinorgbio.2023.112181
ER  - 

@article{
author = "Korać Jačić, Jelena and Bajuk-Bogdanović, Danica and Savić, Slađana D. and Božić Cvijan, Bojana and Spasojević, Milica and MIlenković, Milica R.",
year = "2023",
abstract = "Hydralazine (HL), a frequently prescribed oral antihypertensive drug, shows redox interactions with transition metals such as copper that are not fully understood. Copper may be present at high concentrations in the digestive tract and can affect oral drugs. An important parameter for such interactions is pH, which changes from acidic in the gastric juice to neutral pH in intestines. In this study, we examined interactions of HL with Cu2+ ions in conditions that mimic pH shift in the digestive tract using UV–Vis, Raman and EPR spectroscopy, cyclic voltammetry and oximetry. In the acidic solution, Cu2+ formed a stable mononuclear complex with two bidentate coordinated HL molecules. On the other hand, at neutral pH, Cu2+ initiated oxidation and degradation of HL. The degradation was more rapid in the HL-Cu2+ system that was initially prepared at acidic pH and then shifted to neutral pH. The formation of the complex at acidic pH increases the availability of Cu2+ for redox reactions after the shift to neutral pH at which Cu2+ is poorly soluble. These results imply that the change of pH along the digestive tract may promote HL degradation by allowing the formation of the complex at gastric pH which makes Cu2+ available for subsequent oxidation of HL at neutral pH.",
publisher = "Elsevier",
journal = "Journal of Inorganic Biochemistry",
title = "Coordination of hydralazine with Cu2+ at acidic pH promotes its oxidative degradation at neutral pH",
volume = "243",
pages = "112181",
doi = "10.1016/j.jinorgbio.2023.112181"
}

Korać Jačić, J., Bajuk-Bogdanović, D., Savić, S. D., Božić Cvijan, B., Spasojević, M.,& MIlenković, M. R.. (2023). Coordination of hydralazine with Cu2+ at acidic pH promotes its oxidative degradation at neutral pH. in Journal of Inorganic Biochemistry
Elsevier., 243, 112181.
https://doi.org/10.1016/j.jinorgbio.2023.112181

Korać Jačić J, Bajuk-Bogdanović D, Savić SD, Božić Cvijan B, Spasojević M, MIlenković MR. Coordination of hydralazine with Cu2+ at acidic pH promotes its oxidative degradation at neutral pH. in Journal of Inorganic Biochemistry. 2023;243:112181.
doi:10.1016/j.jinorgbio.2023.112181 .

Korać Jačić, Jelena, Bajuk-Bogdanović, Danica, Savić, Slađana D., Božić Cvijan, Bojana, Spasojević, Milica, MIlenković, Milica R., "Coordination of hydralazine with Cu2+ at acidic pH promotes its oxidative degradation at neutral pH" in Journal of Inorganic Biochemistry, 243 (2023):112181,
https://doi.org/10.1016/j.jinorgbio.2023.112181 . .

TY  - JOUR
AU  - Korać Jačić, Jelena
AU  - Bajuk-Bogdanović, Danica
AU  - Savić, Slađana D.
AU  - Božić Cvijan, Bojana
AU  - Spasojević, Milica
AU  - MIlenković, Milica R.
PY  - 2023
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/5882
AB  - Hydralazine (HL), a frequently prescribed oral antihypertensive drug, shows redox interactions with transition metals such as copper that are not fully understood. Copper may be present at high concentrations in the digestive tract and can affect oral drugs. An important parameter for such interactions is pH, which changes from acidic in the gastric juice to neutral pH in intestines. In this study, we examined interactions of HL with Cu2+ ions in conditions that mimic pH shift in the digestive tract using UV–Vis, Raman and EPR spectroscopy, cyclic voltammetry and oximetry. In the acidic solution, Cu2+ formed a stable mononuclear complex with two bidentate coordinated HL molecules. On the other hand, at neutral pH, Cu2+ initiated oxidation and degradation of HL. The degradation was more rapid in the HL-Cu2+ system that was initially prepared at acidic pH and then shifted to neutral pH. The formation of the complex at acidic pH increases the availability of Cu2+ for redox reactions after the shift to neutral pH at which Cu2+ is poorly soluble. These results imply that the change of pH along the digestive tract may promote HL degradation by allowing the formation of the complex at gastric pH which makes Cu2+ available for subsequent oxidation of HL at neutral pH.
PB  - Elsevier
T2  - Journal of Inorganic Biochemistry
T1  - Coordination of hydralazine with Cu2+ at acidic pH promotes its oxidative degradation at neutral pH
VL  - 243
SP  - 112181
DO  - 10.1016/j.jinorgbio.2023.112181
ER  - 

@article{
author = "Korać Jačić, Jelena and Bajuk-Bogdanović, Danica and Savić, Slađana D. and Božić Cvijan, Bojana and Spasojević, Milica and MIlenković, Milica R.",
year = "2023",
abstract = "Hydralazine (HL), a frequently prescribed oral antihypertensive drug, shows redox interactions with transition metals such as copper that are not fully understood. Copper may be present at high concentrations in the digestive tract and can affect oral drugs. An important parameter for such interactions is pH, which changes from acidic in the gastric juice to neutral pH in intestines. In this study, we examined interactions of HL with Cu2+ ions in conditions that mimic pH shift in the digestive tract using UV–Vis, Raman and EPR spectroscopy, cyclic voltammetry and oximetry. In the acidic solution, Cu2+ formed a stable mononuclear complex with two bidentate coordinated HL molecules. On the other hand, at neutral pH, Cu2+ initiated oxidation and degradation of HL. The degradation was more rapid in the HL-Cu2+ system that was initially prepared at acidic pH and then shifted to neutral pH. The formation of the complex at acidic pH increases the availability of Cu2+ for redox reactions after the shift to neutral pH at which Cu2+ is poorly soluble. These results imply that the change of pH along the digestive tract may promote HL degradation by allowing the formation of the complex at gastric pH which makes Cu2+ available for subsequent oxidation of HL at neutral pH.",
publisher = "Elsevier",
journal = "Journal of Inorganic Biochemistry",
title = "Coordination of hydralazine with Cu2+ at acidic pH promotes its oxidative degradation at neutral pH",
volume = "243",
pages = "112181",
doi = "10.1016/j.jinorgbio.2023.112181"
}

Korać Jačić, J., Bajuk-Bogdanović, D., Savić, S. D., Božić Cvijan, B., Spasojević, M.,& MIlenković, M. R.. (2023). Coordination of hydralazine with Cu2+ at acidic pH promotes its oxidative degradation at neutral pH. in Journal of Inorganic Biochemistry
Elsevier., 243, 112181.
https://doi.org/10.1016/j.jinorgbio.2023.112181

Korać Jačić J, Bajuk-Bogdanović D, Savić SD, Božić Cvijan B, Spasojević M, MIlenković MR. Coordination of hydralazine with Cu2+ at acidic pH promotes its oxidative degradation at neutral pH. in Journal of Inorganic Biochemistry. 2023;243:112181.
doi:10.1016/j.jinorgbio.2023.112181 .

Korać Jačić, Jelena, Bajuk-Bogdanović, Danica, Savić, Slađana D., Božić Cvijan, Bojana, Spasojević, Milica, MIlenković, Milica R., "Coordination of hydralazine with Cu2+ at acidic pH promotes its oxidative degradation at neutral pH" in Journal of Inorganic Biochemistry, 243 (2023):112181,
https://doi.org/10.1016/j.jinorgbio.2023.112181 . .