TY  - JOUR
AU  - Adžić, Miroslav
AU  - Nićiforović, Ana
AU  - Zarić, Božidarka
AU  - Nešković-Konstantinović, Zora
AU  - Spasić, Snežana
AU  - Jones, David
AU  - Radojčić, Marija
PY  - 2013
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3945
AB  - To compare the effects of ionising radiation on leukocytes from breast cancer patients and healthy subjects ex vivo, the level of NF-κB and the antioxidant enzymes manganese-containing superoxide dismutase (Mn-SOD), copper/zinc-containing superoxide dismutase (CuZn-SOD) and catalase (CAT) in combination with flow cytometric analysis of CD4+ lymphocytes was performed. The level of Mn-SOD protein was significantly increased in the breast cancer study group both before (P < 0.001) and after (P < 0.001) irradiation when compared with healthy subjects. Measurements in parallel indicated that the level of CAT protein was significantly higher in the breast cancer study group after irradiation (2 Gy [P < 0.001] and 9 Gy [P < 0.05]) when compared with healthy subjects. Although the initial number of lymphocytes in the blood of breast cancer patients was not different from healthy subjects, the percentage of apoptotic CD4+ cells was significantly (P < 0.001) lower both before and after irradiation indicating that cell culture conditions induced radioresistance of CD4+ cells in the blood of breast cancer patients. The data presented in this current study indicate that brief ex vivo culture of peripheral blood leukocytes potentiates oxidative stress imposed by a breast cancer tumour.
PB  - Taylor & Francis
T2  - Redox Report
T1  - Cell culture conditions potentiate differences in the response to ionising radiation of peripheral blood leukocytes isolated from breast cancer patients and healthy subjects
VL  - 13
IS  - 1
SP  - 17
EP  - 22
DO  - 10.1179/135100008X259088
ER  - 

@article{
author = "Adžić, Miroslav and Nićiforović, Ana and Zarić, Božidarka and Nešković-Konstantinović, Zora and Spasić, Snežana and Jones, David and Radojčić, Marija",
year = "2013",
abstract = "To compare the effects of ionising radiation on leukocytes from breast cancer patients and healthy subjects ex vivo, the level of NF-κB and the antioxidant enzymes manganese-containing superoxide dismutase (Mn-SOD), copper/zinc-containing superoxide dismutase (CuZn-SOD) and catalase (CAT) in combination with flow cytometric analysis of CD4+ lymphocytes was performed. The level of Mn-SOD protein was significantly increased in the breast cancer study group both before (P < 0.001) and after (P < 0.001) irradiation when compared with healthy subjects. Measurements in parallel indicated that the level of CAT protein was significantly higher in the breast cancer study group after irradiation (2 Gy [P < 0.001] and 9 Gy [P < 0.05]) when compared with healthy subjects. Although the initial number of lymphocytes in the blood of breast cancer patients was not different from healthy subjects, the percentage of apoptotic CD4+ cells was significantly (P < 0.001) lower both before and after irradiation indicating that cell culture conditions induced radioresistance of CD4+ cells in the blood of breast cancer patients. The data presented in this current study indicate that brief ex vivo culture of peripheral blood leukocytes potentiates oxidative stress imposed by a breast cancer tumour.",
publisher = "Taylor & Francis",
journal = "Redox Report",
title = "Cell culture conditions potentiate differences in the response to ionising radiation of peripheral blood leukocytes isolated from breast cancer patients and healthy subjects",
volume = "13",
number = "1",
pages = "17-22",
doi = "10.1179/135100008X259088"
}

Adžić, M., Nićiforović, A., Zarić, B., Nešković-Konstantinović, Z., Spasić, S., Jones, D.,& Radojčić, M.. (2013). Cell culture conditions potentiate differences in the response to ionising radiation of peripheral blood leukocytes isolated from breast cancer patients and healthy subjects. in Redox Report
Taylor & Francis., 13(1), 17-22.
https://doi.org/10.1179/135100008X259088

Adžić M, Nićiforović A, Zarić B, Nešković-Konstantinović Z, Spasić S, Jones D, Radojčić M. Cell culture conditions potentiate differences in the response to ionising radiation of peripheral blood leukocytes isolated from breast cancer patients and healthy subjects. in Redox Report. 2013;13(1):17-22.
doi:10.1179/135100008X259088 .

Adžić, Miroslav, Nićiforović, Ana, Zarić, Božidarka, Nešković-Konstantinović, Zora, Spasić, Snežana, Jones, David, Radojčić, Marija, "Cell culture conditions potentiate differences in the response to ionising radiation of peripheral blood leukocytes isolated from breast cancer patients and healthy subjects" in Redox Report, 13, no. 1 (2013):17-22,
https://doi.org/10.1179/135100008X259088 . .

TY  - JOUR
AU  - Bajic, Aleksandar
AU  - Zakrzewska, Joanna
AU  - Gođevac, Dejan
AU  - Anđus, Pavle
AU  - Jones, David R.
AU  - Spasić, Mihajlo
AU  - Spasojević, Ivan
PY  - 2011
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/781
AB  - The cytoprotective activity of F16BP has been documented in severe conditions such as convulsions, reperfusion injury, septic shock, diabetic complications, hypothermia-induced injury, UV-provoked skin damage and in other processes including apoptosis and excitotoxicity. F16BP shows very efficient cytoprotective activity in astroglial cells exposed to H2O2-provoked oxidative stress and during neuronal injury caused by hypoxic conditions. As most of the aforementioned processes involve iron activity-related conditions, we investigated the ferric and ferrous iron binding properties of F16BP under physiological conditions using P-31 NMR and EPR spectroscopy. Our results indicate that cytoprotective F16BP activity is predominantly based on ferrous iron sequestration. P-31 NMR spectroscopy of F16BP employing paramagnetic properties of iron clearly showed that F16BP forms stabile complexes with Fe2+ which was verified by EPR of another divalent cation-Mn2+. On the other hand, F16BP does not sequester ferric iron nor does it increase its redox activity as shown by P-31 NMR and EPR spin-trapping. Therefore, F16BP may be beneficial in neurodegenerative and other conditions that are characterised by ferric iron stores and deposits.
PB  - Elsevier Sci Ltd, Oxford
T2  - Carbohydrate Research
T1  - Relevance of the ability of fructose 1,6-bis(phosphate) to sequester ferrous but not ferric ions
VL  - 346
IS  - 3
SP  - 416
EP  - 420
DO  - 10.1016/j.carres.2010.12.008
ER  - 

@article{
author = "Bajic, Aleksandar and Zakrzewska, Joanna and Gođevac, Dejan and Anđus, Pavle and Jones, David R. and Spasić, Mihajlo and Spasojević, Ivan",
year = "2011",
abstract = "The cytoprotective activity of F16BP has been documented in severe conditions such as convulsions, reperfusion injury, septic shock, diabetic complications, hypothermia-induced injury, UV-provoked skin damage and in other processes including apoptosis and excitotoxicity. F16BP shows very efficient cytoprotective activity in astroglial cells exposed to H2O2-provoked oxidative stress and during neuronal injury caused by hypoxic conditions. As most of the aforementioned processes involve iron activity-related conditions, we investigated the ferric and ferrous iron binding properties of F16BP under physiological conditions using P-31 NMR and EPR spectroscopy. Our results indicate that cytoprotective F16BP activity is predominantly based on ferrous iron sequestration. P-31 NMR spectroscopy of F16BP employing paramagnetic properties of iron clearly showed that F16BP forms stabile complexes with Fe2+ which was verified by EPR of another divalent cation-Mn2+. On the other hand, F16BP does not sequester ferric iron nor does it increase its redox activity as shown by P-31 NMR and EPR spin-trapping. Therefore, F16BP may be beneficial in neurodegenerative and other conditions that are characterised by ferric iron stores and deposits.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Carbohydrate Research",
title = "Relevance of the ability of fructose 1,6-bis(phosphate) to sequester ferrous but not ferric ions",
volume = "346",
number = "3",
pages = "416-420",
doi = "10.1016/j.carres.2010.12.008"
}

Bajic, A., Zakrzewska, J., Gođevac, D., Anđus, P., Jones, D. R., Spasić, M.,& Spasojević, I.. (2011). Relevance of the ability of fructose 1,6-bis(phosphate) to sequester ferrous but not ferric ions. in Carbohydrate Research
Elsevier Sci Ltd, Oxford., 346(3), 416-420.
https://doi.org/10.1016/j.carres.2010.12.008

Bajic A, Zakrzewska J, Gođevac D, Anđus P, Jones DR, Spasić M, Spasojević I. Relevance of the ability of fructose 1,6-bis(phosphate) to sequester ferrous but not ferric ions. in Carbohydrate Research. 2011;346(3):416-420.
doi:10.1016/j.carres.2010.12.008 .

Bajic, Aleksandar, Zakrzewska, Joanna, Gođevac, Dejan, Anđus, Pavle, Jones, David R., Spasić, Mihajlo, Spasojević, Ivan, "Relevance of the ability of fructose 1,6-bis(phosphate) to sequester ferrous but not ferric ions" in Carbohydrate Research, 346, no. 3 (2011):416-420,
https://doi.org/10.1016/j.carres.2010.12.008 . .

TY  - JOUR
AU  - Spasojević, Ivan
AU  - Mojović, Miloš
AU  - Stević, Zorica
AU  - Spasić, Snežana
AU  - Jones, David R.
AU  - Morina, Arian
AU  - Spasić, Mihajlo
PY  - 2010
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/738
AB  - A breakdown in homeostasis of redox-active metals represents an important factor for neurodegeneration. We have used EPR spectroscopy and BMPO spin-trap to investigate the catalytic properties and ligand modulation of redox activity of copper and iron in human cerebrospinal fluid (CSF). In contrast to iron, copper supplementation provoked a statistically significant increase in hydroxyl free radical generation in CSF treated with H(2)O(2). However, in a binary copper/iron containing Fenton system, iron catalytically activated copper. The chelator EDTA, which represents a model of physiological metal ligands, completely prevented copper's redox activity in CSF, while iron chelation led to a significant increase in hydroxyl radical generation, indicating that copper and iron do not only have diverse catalytic properties in the CSF but also that their redox activities are differently modulated by ligands. The application of DDC reduced hydroxyl radical generation in the CSF containing catalytically active metals (free Cu(2+) or Fe(3+)-EDTA complex). We conclude that chelators, such as DDC, are capable of preventing the pro-oxidative activity of both metals and may be suitable for reducing hydroxyl radical formation in certain pathophysiological settings.
PB  - Taylor & Francis Group
T2  - Redox Report
T1  - Bioavailability and catalytic properties of copper and iron for Fenton chemistry in human cerebrospinal fluid
VL  - 15
IS  - 1
SP  - 29
EP  - 35
DO  - 10.1179/174329210X12650506623087
ER  - 

@article{
author = "Spasojević, Ivan and Mojović, Miloš and Stević, Zorica and Spasić, Snežana and Jones, David R. and Morina, Arian and Spasić, Mihajlo",
year = "2010",
abstract = "A breakdown in homeostasis of redox-active metals represents an important factor for neurodegeneration. We have used EPR spectroscopy and BMPO spin-trap to investigate the catalytic properties and ligand modulation of redox activity of copper and iron in human cerebrospinal fluid (CSF). In contrast to iron, copper supplementation provoked a statistically significant increase in hydroxyl free radical generation in CSF treated with H(2)O(2). However, in a binary copper/iron containing Fenton system, iron catalytically activated copper. The chelator EDTA, which represents a model of physiological metal ligands, completely prevented copper's redox activity in CSF, while iron chelation led to a significant increase in hydroxyl radical generation, indicating that copper and iron do not only have diverse catalytic properties in the CSF but also that their redox activities are differently modulated by ligands. The application of DDC reduced hydroxyl radical generation in the CSF containing catalytically active metals (free Cu(2+) or Fe(3+)-EDTA complex). We conclude that chelators, such as DDC, are capable of preventing the pro-oxidative activity of both metals and may be suitable for reducing hydroxyl radical formation in certain pathophysiological settings.",
publisher = "Taylor & Francis Group",
journal = "Redox Report",
title = "Bioavailability and catalytic properties of copper and iron for Fenton chemistry in human cerebrospinal fluid",
volume = "15",
number = "1",
pages = "29-35",
doi = "10.1179/174329210X12650506623087"
}

Spasojević, I., Mojović, M., Stević, Z., Spasić, S., Jones, D. R., Morina, A.,& Spasić, M.. (2010). Bioavailability and catalytic properties of copper and iron for Fenton chemistry in human cerebrospinal fluid. in Redox Report
Taylor & Francis Group., 15(1), 29-35.
https://doi.org/10.1179/174329210X12650506623087

Spasojević I, Mojović M, Stević Z, Spasić S, Jones DR, Morina A, Spasić M. Bioavailability and catalytic properties of copper and iron for Fenton chemistry in human cerebrospinal fluid. in Redox Report. 2010;15(1):29-35.
doi:10.1179/174329210X12650506623087 .

Spasojević, Ivan, Mojović, Miloš, Stević, Zorica, Spasić, Snežana, Jones, David R., Morina, Arian, Spasić, Mihajlo, "Bioavailability and catalytic properties of copper and iron for Fenton chemistry in human cerebrospinal fluid" in Redox Report, 15, no. 1 (2010):29-35,
https://doi.org/10.1179/174329210X12650506623087 . .

TY  - JOUR
AU  - Spasojević, Ivan
AU  - Mojović, Miloš
AU  - Blagojević, Duško
AU  - Spasić, Snežana
AU  - Jones, David
AU  - Nikolić-Kokić, Aleksandra
AU  - Spasić, Mihajlo
PY  - 2009
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3937
AB  - The hydroxyl radical (radical dotOH) has detrimental biological activity due to its very high reactivity. Our experiments were designed to determine the effects of equimolar concentrations of glucose, fructose and mannitol and three phosphorylated forms of fructose (fructose-1-phosphate (F1P); fructose-6-phosphate (F6P); and fructose-1,6-bis(phosphate) (F16BP)) on radical dotOH radical production via the Fenton reaction. EPR spectroscopy using spin-trap DEPMPO was applied to detect radical production. We found that the percentage inhibition of radical dotOH radical formation decreased in the order F16BP > F1P > F6P > fructose > mannitol = glucose. As ketoses can sequester redox-active iron thus preventing the Fenton reaction, the Haber–Weiss-like system was also employed to generate radical dotOH, so that the effect of iron sequestration could be distinguished from direct radical dotOH radical scavenging. In the latter system, the rank order of radical dotOH scavenging activity was F16BP > F1P > F6P > fructose = mannitol = glucose. Our results clearly demonstrate that intracellular phosphorylated forms of fructose have more scavenging properties than fructose or glucose, leading us to conclude that the acute administration of fructose could overcome the body’s reaction to exogenous antioxidants during appropriate therapy in certain pathophysiological conditions related to oxidative stress, such as sepsis, neurodegenerative diseases, atherosclerosis, malignancy, and some complications of pregnancy.
PB  - Elsevier
T2  - Carbohydrate Research
T1  - Relevance of the capacity of phosphorylated fructose to scavenge the hydroxyl radical
VL  - 344
IS  - 1
SP  - 80
EP  - 84
DO  - 10.1016/j.carres.2008.09.025
ER  - 

@article{
author = "Spasojević, Ivan and Mojović, Miloš and Blagojević, Duško and Spasić, Snežana and Jones, David and Nikolić-Kokić, Aleksandra and Spasić, Mihajlo",
year = "2009",
abstract = "The hydroxyl radical (radical dotOH) has detrimental biological activity due to its very high reactivity. Our experiments were designed to determine the effects of equimolar concentrations of glucose, fructose and mannitol and three phosphorylated forms of fructose (fructose-1-phosphate (F1P); fructose-6-phosphate (F6P); and fructose-1,6-bis(phosphate) (F16BP)) on radical dotOH radical production via the Fenton reaction. EPR spectroscopy using spin-trap DEPMPO was applied to detect radical production. We found that the percentage inhibition of radical dotOH radical formation decreased in the order F16BP > F1P > F6P > fructose > mannitol = glucose. As ketoses can sequester redox-active iron thus preventing the Fenton reaction, the Haber–Weiss-like system was also employed to generate radical dotOH, so that the effect of iron sequestration could be distinguished from direct radical dotOH radical scavenging. In the latter system, the rank order of radical dotOH scavenging activity was F16BP > F1P > F6P > fructose = mannitol = glucose. Our results clearly demonstrate that intracellular phosphorylated forms of fructose have more scavenging properties than fructose or glucose, leading us to conclude that the acute administration of fructose could overcome the body’s reaction to exogenous antioxidants during appropriate therapy in certain pathophysiological conditions related to oxidative stress, such as sepsis, neurodegenerative diseases, atherosclerosis, malignancy, and some complications of pregnancy.",
publisher = "Elsevier",
journal = "Carbohydrate Research",
title = "Relevance of the capacity of phosphorylated fructose to scavenge the hydroxyl radical",
volume = "344",
number = "1",
pages = "80-84",
doi = "10.1016/j.carres.2008.09.025"
}

Spasojević, I., Mojović, M., Blagojević, D., Spasić, S., Jones, D., Nikolić-Kokić, A.,& Spasić, M.. (2009). Relevance of the capacity of phosphorylated fructose to scavenge the hydroxyl radical. in Carbohydrate Research
Elsevier., 344(1), 80-84.
https://doi.org/10.1016/j.carres.2008.09.025

Spasojević I, Mojović M, Blagojević D, Spasić S, Jones D, Nikolić-Kokić A, Spasić M. Relevance of the capacity of phosphorylated fructose to scavenge the hydroxyl radical. in Carbohydrate Research. 2009;344(1):80-84.
doi:10.1016/j.carres.2008.09.025 .

Spasojević, Ivan, Mojović, Miloš, Blagojević, Duško, Spasić, Snežana, Jones, David, Nikolić-Kokić, Aleksandra, Spasić, Mihajlo, "Relevance of the capacity of phosphorylated fructose to scavenge the hydroxyl radical" in Carbohydrate Research, 344, no. 1 (2009):80-84,
https://doi.org/10.1016/j.carres.2008.09.025 . .

TY  - JOUR
AU  - Oreščanin, Zorana
AU  - Milovanović, Slobodan R.
AU  - Spasić, Snežana
AU  - Jones, David
AU  - Spasić, Mihajlo
PY  - 2007
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3938
AB  - The conversion of nitric oxide (NO
) into its congeners nitrosonium (NO ) and nitroxyl (HNO/NO) ions may have important consequences for signal transduction and physiological responses. Manganese-containing superoxide dismutase (MnSOD) may convert
NO into its redox congeners. In our current work, we have examined the mechanism of sodium nitroprusside (SNP)-induced relaxation of arteries, with or without endothelium, from both normotensive and spontaneously hypertensive (SH) rats in the absence and
presence of MnSOD. SNP induced a greater degree of relaxation in normotensive than in SH rats. MnSOD antagonized SNPinduced relaxation and effect was greater in normotensive than hypertensive rats. However, MnSOD even potentiated SNP-induced
relaxation in mesenteric arteries with endothelium from SH rats. Our results indicate that HNO/NO-mediated relaxation is more effective in mesenteric artery smooth muscle from SH rats than from normotensive rats and that vascular dysfunction in SH rats is not
solely endothelium-derived but involves changes in vascular smooth muscl
PB  - Springer
T2  - Pharmacological Report
T1  - Different responses of mesenteric artery from normotensive and spontaneously hypertensive rats to nitric oxide and its redox congeners
VL  - 59
SP  - 315
EP  - 322
UR  - https://hdl.handle.net/21.15107/rcub_cer_3938
ER  - 

@article{
author = "Oreščanin, Zorana and Milovanović, Slobodan R. and Spasić, Snežana and Jones, David and Spasić, Mihajlo",
year = "2007",
abstract = "The conversion of nitric oxide (NO
) into its congeners nitrosonium (NO ) and nitroxyl (HNO/NO) ions may have important consequences for signal transduction and physiological responses. Manganese-containing superoxide dismutase (MnSOD) may convert
NO into its redox congeners. In our current work, we have examined the mechanism of sodium nitroprusside (SNP)-induced relaxation of arteries, with or without endothelium, from both normotensive and spontaneously hypertensive (SH) rats in the absence and
presence of MnSOD. SNP induced a greater degree of relaxation in normotensive than in SH rats. MnSOD antagonized SNPinduced relaxation and effect was greater in normotensive than hypertensive rats. However, MnSOD even potentiated SNP-induced
relaxation in mesenteric arteries with endothelium from SH rats. Our results indicate that HNO/NO-mediated relaxation is more effective in mesenteric artery smooth muscle from SH rats than from normotensive rats and that vascular dysfunction in SH rats is not
solely endothelium-derived but involves changes in vascular smooth muscl",
publisher = "Springer",
journal = "Pharmacological Report",
title = "Different responses of mesenteric artery from normotensive and spontaneously hypertensive rats to nitric oxide and its redox congeners",
volume = "59",
pages = "315-322",
url = "https://hdl.handle.net/21.15107/rcub_cer_3938"
}

Oreščanin, Z., Milovanović, S. R., Spasić, S., Jones, D.,& Spasić, M.. (2007). Different responses of mesenteric artery from normotensive and spontaneously hypertensive rats to nitric oxide and its redox congeners. in Pharmacological Report
Springer., 59, 315-322.
https://hdl.handle.net/21.15107/rcub_cer_3938

Oreščanin Z, Milovanović SR, Spasić S, Jones D, Spasić M. Different responses of mesenteric artery from normotensive and spontaneously hypertensive rats to nitric oxide and its redox congeners. in Pharmacological Report. 2007;59:315-322.
https://hdl.handle.net/21.15107/rcub_cer_3938 .

Oreščanin, Zorana, Milovanović, Slobodan R., Spasić, Snežana, Jones, David, Spasić, Mihajlo, "Different responses of mesenteric artery from normotensive and spontaneously hypertensive rats to nitric oxide and its redox congeners" in Pharmacological Report, 59 (2007):315-322,
https://hdl.handle.net/21.15107/rcub_cer_3938 .

TY  - JOUR
AU  - Nikolić, Milan
AU  - Nikolić -Kokić, Aleksandra
AU  - Stanić, Dragana
AU  - Blagojević, Duško
AU  - Vranić, Danijela
AU  - Jones, David R.
AU  - Niketić, Vesna
AU  - Spasić, Mihajlo B.
PY  - 2007
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4219
AB  - U prethodnom radu pokazano je da lipidna frakcija koja se javlja u hemolizatu
zdravih ljudi predstavlja holesterol (asosovan sa fosfolipidima) čvrsto vezan za hemoglobin
(Hb-Ch). U ovom radu ispitivan je uticaj Hb-Ch na anti-oksidativni enzimski
sistem u humanim eritrocitima. Određena je aktivnost superoksid-dizmutaze, katalaze,
glutation-peroksidaze i glutation-reduktaze, kao i sadržaj met-hemoglobina (metHb)
u eritrocitima 60 qudi, podeqenih u dve grupe na osnovu količine Hb-Ch. Rezultati
pokazuju da količina prisutnog Hb-Ch ne menja aktivnost merenih enzima, niti nivo
metHb.Međutim, u grupi ispitanika sa povećanim sadržajem Hb-Ch zapažene su korelativne
promene u delu anti-oksidativnog enzimskog sistema povezanog sa glutationom.
U istoj grupi detektovane su i veće koncentracije ukupnog holesterola i triglicerida
u plazmi, što zajedno ukazuje na povećani peroksidativni pritisak iz plazme. Ovi
rezultati ukazuju da odbrambeni anti-oksidativni enzimski sistem u humanim eritrocitima
prilagođava svoju organizaciju prema zahtevima iz svog okruženja.
AB  - In a previous study, it was shown that the lipid fraction, which is occasionally observed in red blood cell hemolysates, represents cholesterol (Ch) associated with phospholipid firmly bound to haemoglobin (termed Hb-Ch). The current study was conducted to investigate whether Hb-Ch could affect the primary anti-oxidant enzyme defence system in human erythrocytes. Sixty healthy volunteers were used for the current study. Group 1 consisted of 28 subjects without or with a low level of Hb-Ch. Group 2 comprised 32 subjects with a considerably higher level of Hb-Ch. The activities of erythrocyte superoxide dismutase, catalase, glutathione peroxidase and glutathione reductase, as well as the content of methaemoglobin (metHb) were measured in both groups. The results indicated that the amount of Hb-Ch neither influenced the activities of the erythrocyte anti-oxidant enzymes nor altered the level of metHb. However, a higher amount of Hb-Ch changed the correlations in the part of the anti-oxidant defence system relating to glutathione, suggesting increased peroxidative pressure from plasma lipids. Group 2 also had significantly increased concentrations of total plasma Ch and triglycerides. Together, these facts are strong indications that the anti-oxidant defence system in human erythrocytes finely retunes its composition according to plasma oxidative demands.
PB  - Belgrade : Serbian Chemical Society
T2  - Journal of the Serbian Chemical Society
T1  - Does cholesterol bound to haemoglobin affect the anti-oxidant enzyme defence system in human erythrocytes?
T1  - Da li holesterol vezan za hemoglobin utiče na anti-oksidativni enzimski sistem u humanim eritrocitima
VL  - 72
IS  - 4
SP  - 339
EP  - 345
DO  - 10.2298/JSC0704339N
ER  - 

@article{
author = "Nikolić, Milan and Nikolić -Kokić, Aleksandra and Stanić, Dragana and Blagojević, Duško and Vranić, Danijela and Jones, David R. and Niketić, Vesna and Spasić, Mihajlo B.",
year = "2007",
abstract = "U prethodnom radu pokazano je da lipidna frakcija koja se javlja u hemolizatu
zdravih ljudi predstavlja holesterol (asosovan sa fosfolipidima) čvrsto vezan za hemoglobin
(Hb-Ch). U ovom radu ispitivan je uticaj Hb-Ch na anti-oksidativni enzimski
sistem u humanim eritrocitima. Određena je aktivnost superoksid-dizmutaze, katalaze,
glutation-peroksidaze i glutation-reduktaze, kao i sadržaj met-hemoglobina (metHb)
u eritrocitima 60 qudi, podeqenih u dve grupe na osnovu količine Hb-Ch. Rezultati
pokazuju da količina prisutnog Hb-Ch ne menja aktivnost merenih enzima, niti nivo
metHb.Međutim, u grupi ispitanika sa povećanim sadržajem Hb-Ch zapažene su korelativne
promene u delu anti-oksidativnog enzimskog sistema povezanog sa glutationom.
U istoj grupi detektovane su i veće koncentracije ukupnog holesterola i triglicerida
u plazmi, što zajedno ukazuje na povećani peroksidativni pritisak iz plazme. Ovi
rezultati ukazuju da odbrambeni anti-oksidativni enzimski sistem u humanim eritrocitima
prilagođava svoju organizaciju prema zahtevima iz svog okruženja., In a previous study, it was shown that the lipid fraction, which is occasionally observed in red blood cell hemolysates, represents cholesterol (Ch) associated with phospholipid firmly bound to haemoglobin (termed Hb-Ch). The current study was conducted to investigate whether Hb-Ch could affect the primary anti-oxidant enzyme defence system in human erythrocytes. Sixty healthy volunteers were used for the current study. Group 1 consisted of 28 subjects without or with a low level of Hb-Ch. Group 2 comprised 32 subjects with a considerably higher level of Hb-Ch. The activities of erythrocyte superoxide dismutase, catalase, glutathione peroxidase and glutathione reductase, as well as the content of methaemoglobin (metHb) were measured in both groups. The results indicated that the amount of Hb-Ch neither influenced the activities of the erythrocyte anti-oxidant enzymes nor altered the level of metHb. However, a higher amount of Hb-Ch changed the correlations in the part of the anti-oxidant defence system relating to glutathione, suggesting increased peroxidative pressure from plasma lipids. Group 2 also had significantly increased concentrations of total plasma Ch and triglycerides. Together, these facts are strong indications that the anti-oxidant defence system in human erythrocytes finely retunes its composition according to plasma oxidative demands.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "Journal of the Serbian Chemical Society",
title = "Does cholesterol bound to haemoglobin affect the anti-oxidant enzyme defence system in human erythrocytes?, Da li holesterol vezan za hemoglobin utiče na anti-oksidativni enzimski sistem u humanim eritrocitima",
volume = "72",
number = "4",
pages = "339-345",
doi = "10.2298/JSC0704339N"
}

Nikolić, M., Nikolić -Kokić, A., Stanić, D., Blagojević, D., Vranić, D., Jones, D. R., Niketić, V.,& Spasić, M. B.. (2007). Does cholesterol bound to haemoglobin affect the anti-oxidant enzyme defence system in human erythrocytes?. in Journal of the Serbian Chemical Society
Belgrade : Serbian Chemical Society., 72(4), 339-345.
https://doi.org/10.2298/JSC0704339N

Nikolić M, Nikolić -Kokić A, Stanić D, Blagojević D, Vranić D, Jones DR, Niketić V, Spasić MB. Does cholesterol bound to haemoglobin affect the anti-oxidant enzyme defence system in human erythrocytes?. in Journal of the Serbian Chemical Society. 2007;72(4):339-345.
doi:10.2298/JSC0704339N .

Nikolić, Milan, Nikolić -Kokić, Aleksandra, Stanić, Dragana, Blagojević, Duško, Vranić, Danijela, Jones, David R., Niketić, Vesna, Spasić, Mihajlo B., "Does cholesterol bound to haemoglobin affect the anti-oxidant enzyme defence system in human erythrocytes?" in Journal of the Serbian Chemical Society, 72, no. 4 (2007):339-345,
https://doi.org/10.2298/JSC0704339N . .

TY  - JOUR
AU  - Adžić, Miroslav
AU  - Nićiforović, Ana
AU  - Vucić, Vesna
AU  - Nešković-Konstantinović, Zora
AU  - Spasić, Snežana
AU  - Jones, David
AU  - Radojčić, Marija
AU  - Spasić, Mihajlo
PY  - 2006
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3965
AB  - There is a well-established role for reactive oxygen and nitrogen species, chronic inflammation and immune response in the pathogenesis of breast cancer. Complex interactions between breast cancer cells and surrounding blood vessels are prerequisites for cancer growth and invasion. Reports in the literature concerning the systemic response to, and the effect of, common breast cancer therapy on NF-kappaB and antioxidative defence enzyme expression and activity under clinical conditions are scarce. We determined these parameters in whole blood cell lysate from 16 women with breast cancer before and after combined (cyclophosphamide, doxorubicin, 5-fluorouracil; CAF) therapy and compared the results with 16 healthy women. Significantly higher levels of NF-kappaB and Mn-SOD (both their protein level and their activity) were found in breast cancer patients before and after CAF therapy, in comparison with healthy women. In parallel measurements, no change in the level or activity of catalase (CAT) was detected. According to our findings, it appears that breast cancer creates conditions that increase the level of hydrogen peroxide in the circulating cells and that the applied CAF therapy fails to compensate, therefore creating systemic conditions that favour survival and invasion of breast cancer cells.
PB  - Maney Publishing
T2  - Redox Report
T1  - Systemic NF-kappaB activation in blood cells of breast cancer patients
VL  - 11
IS  - 1
SP  - 39
SP  - 44
DO  - 10.1179/135100006X101002
ER  - 

@article{
author = "Adžić, Miroslav and Nićiforović, Ana and Vucić, Vesna and Nešković-Konstantinović, Zora and Spasić, Snežana and Jones, David and Radojčić, Marija and Spasić, Mihajlo",
year = "2006",
abstract = "There is a well-established role for reactive oxygen and nitrogen species, chronic inflammation and immune response in the pathogenesis of breast cancer. Complex interactions between breast cancer cells and surrounding blood vessels are prerequisites for cancer growth and invasion. Reports in the literature concerning the systemic response to, and the effect of, common breast cancer therapy on NF-kappaB and antioxidative defence enzyme expression and activity under clinical conditions are scarce. We determined these parameters in whole blood cell lysate from 16 women with breast cancer before and after combined (cyclophosphamide, doxorubicin, 5-fluorouracil; CAF) therapy and compared the results with 16 healthy women. Significantly higher levels of NF-kappaB and Mn-SOD (both their protein level and their activity) were found in breast cancer patients before and after CAF therapy, in comparison with healthy women. In parallel measurements, no change in the level or activity of catalase (CAT) was detected. According to our findings, it appears that breast cancer creates conditions that increase the level of hydrogen peroxide in the circulating cells and that the applied CAF therapy fails to compensate, therefore creating systemic conditions that favour survival and invasion of breast cancer cells.",
publisher = "Maney Publishing",
journal = "Redox Report",
title = "Systemic NF-kappaB activation in blood cells of breast cancer patients",
volume = "11",
number = "1",
pages = "39-44",
doi = "10.1179/135100006X101002"
}

Adžić, M., Nićiforović, A., Vucić, V., Nešković-Konstantinović, Z., Spasić, S., Jones, D., Radojčić, M.,& Spasić, M.. (2006). Systemic NF-kappaB activation in blood cells of breast cancer patients. in Redox Report
Maney Publishing., 11(1), 39.
https://doi.org/10.1179/135100006X101002

Adžić M, Nićiforović A, Vucić V, Nešković-Konstantinović Z, Spasić S, Jones D, Radojčić M, Spasić M. Systemic NF-kappaB activation in blood cells of breast cancer patients. in Redox Report. 2006;11(1):39.
doi:10.1179/135100006X101002 .

Adžić, Miroslav, Nićiforović, Ana, Vucić, Vesna, Nešković-Konstantinović, Zora, Spasić, Snežana, Jones, David, Radojčić, Marija, Spasić, Mihajlo, "Systemic NF-kappaB activation in blood cells of breast cancer patients" in Redox Report, 11, no. 1 (2006):39,
https://doi.org/10.1179/135100006X101002 . .

TY  - JOUR
AU  - Nikolić-Kokić, Aleksandra
AU  - Stević, Zorica
AU  - Stojanović, Srđan
AU  - Blagojević, Duško
AU  - Jones, David
AU  - Pavlović, Sanja
AU  - Nikrtić, Vesna
AU  - Apostolski, Slobodan
AU  - Spasić, Mihajlo
PY  - 2005
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3868
AB  - Recent findings indicate that nitric oxide (NO•) over-production might be an important factor in thepathogenesis  of  sporadic  amyotrophic  lateral  sclerosis  (SALS).  We  measured  significantly  higherconcentrations   of   uric   acid   and   thiol   group-containing   molecules   (R–SH   groups)   in   thecerebrospinal  fluid  (CSF)  from  SALS  patients  compared  to  controls.  The  above  factors,  togetherwith a slightly increased free iron concentration found in the CSF, favour conditions necessary forthe  formation  of  the  dinitrosyl  iron  complex,  capable  of  NO•bio-transformation.  Thus,  weperformed ex vivosaturation of CSF (from both SALS patients and controls) with NO•. A decreasein the level of R–SH was found. This was more pronounced in the CSF from SALS patients. In theCSF from SALS patients the production of nitrite and hydroxylamine was greater than that observedin the CSF from controls. Moreover, we also found increased Cu,Zn-SOD activity in the CSF fromSALS  patients  (when  compared  to  control  subjects)  but  no  activity  corresponding  to  Mn-SOD  inany CSF samples. As Cu,Zn-SOD can react with nitroxyl forming NO•, the conditions for a closed,but continuous, loop of NO•biotransformation are present in the CSF of ALS patients.
PB  - Maney Publishing
T2  - Redox Report
T1  - Biotransformation of nitric oxide in the cerebrospinal fluid of amyotrophic lateral sclerosis patients
VL  - 10
IS  - 5
SP  - 265
EP  - 270
DO  - 10.1179/135100005X70242
ER  - 

@article{
author = "Nikolić-Kokić, Aleksandra and Stević, Zorica and Stojanović, Srđan and Blagojević, Duško and Jones, David and Pavlović, Sanja and Nikrtić, Vesna and Apostolski, Slobodan and Spasić, Mihajlo",
year = "2005",
abstract = "Recent findings indicate that nitric oxide (NO•) over-production might be an important factor in thepathogenesis  of  sporadic  amyotrophic  lateral  sclerosis  (SALS).  We  measured  significantly  higherconcentrations   of   uric   acid   and   thiol   group-containing   molecules   (R–SH   groups)   in   thecerebrospinal  fluid  (CSF)  from  SALS  patients  compared  to  controls.  The  above  factors,  togetherwith a slightly increased free iron concentration found in the CSF, favour conditions necessary forthe  formation  of  the  dinitrosyl  iron  complex,  capable  of  NO•bio-transformation.  Thus,  weperformed ex vivosaturation of CSF (from both SALS patients and controls) with NO•. A decreasein the level of R–SH was found. This was more pronounced in the CSF from SALS patients. In theCSF from SALS patients the production of nitrite and hydroxylamine was greater than that observedin the CSF from controls. Moreover, we also found increased Cu,Zn-SOD activity in the CSF fromSALS  patients  (when  compared  to  control  subjects)  but  no  activity  corresponding  to  Mn-SOD  inany CSF samples. As Cu,Zn-SOD can react with nitroxyl forming NO•, the conditions for a closed,but continuous, loop of NO•biotransformation are present in the CSF of ALS patients.",
publisher = "Maney Publishing",
journal = "Redox Report",
title = "Biotransformation of nitric oxide in the cerebrospinal fluid of amyotrophic lateral sclerosis patients",
volume = "10",
number = "5",
pages = "265-270",
doi = "10.1179/135100005X70242"
}

Nikolić-Kokić, A., Stević, Z., Stojanović, S., Blagojević, D., Jones, D., Pavlović, S., Nikrtić, V., Apostolski, S.,& Spasić, M.. (2005). Biotransformation of nitric oxide in the cerebrospinal fluid of amyotrophic lateral sclerosis patients. in Redox Report
Maney Publishing., 10(5), 265-270.
https://doi.org/10.1179/135100005X70242

Nikolić-Kokić A, Stević Z, Stojanović S, Blagojević D, Jones D, Pavlović S, Nikrtić V, Apostolski S, Spasić M. Biotransformation of nitric oxide in the cerebrospinal fluid of amyotrophic lateral sclerosis patients. in Redox Report. 2005;10(5):265-270.
doi:10.1179/135100005X70242 .

Nikolić-Kokić, Aleksandra, Stević, Zorica, Stojanović, Srđan, Blagojević, Duško, Jones, David, Pavlović, Sanja, Nikrtić, Vesna, Apostolski, Slobodan, Spasić, Mihajlo, "Biotransformation of nitric oxide in the cerebrospinal fluid of amyotrophic lateral sclerosis patients" in Redox Report, 10, no. 5 (2005):265-270,
https://doi.org/10.1179/135100005X70242 . .