TY  - JOUR
AU  - Uzelac, Tamara N.
AU  - Smiljanić, Katarina
AU  - Takić, Marija
AU  - Sarac, Ivana
AU  - Petovic-Oggiano, Gordana
AU  - Nikolić, Milan
AU  - Jovanović, Vesna B.
PY  - 2024
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/6429
AB  - The binding of ubiquitous serum ligands (free fatty acids) to human serum albumin (HSA)
or its glycation can affect thiol group reactivity, thus influencing its antioxidant activity. The effects
of stearic acid (SA) and glucose binding on HSA structural changes and thiol group content and
reactivity were monitored by fluoroscopy and the Ellman method during a 14-day incubation in
molar ratios to HSA that mimic pathophysiological conditions. Upon incubation with 5 mM glucose,
HSA glycation was the same as HSA without it, in three different HSA:SA molar ratios (HSA:SA-
1:1-2-4). The protective effect of SA on the antioxidant property of HSA under different glucose
regimes (5-10-20 mM) was significantly affected by molar ratios of HSA:SA. Thiol reactivity was fully
restored with 5–20 mM glucose at a 1:1 HSA:SA ratio, while the highest thiol content recovery was in
pathological glucose regimes at a 1:1 HSA:SA ratio. The SA affinity for HSA increased significantly
(1.5- and 1.3-fold, p < 0.01) with 5 and 10 mM glucose compared to the control. These results deepen
the knowledge about the possible regulation of the antioxidant role of HSA in diabetes and other
pathophysiological conditions and enable the design of future HSA-drug studies which, in turn, is
important for clinicians when designing information-based treatments.
PB  - MDPI
T2  - International Journal of Molecular Sciences
T1  - The Thiol Group Reactivity and the Antioxidant Property of Human Serum Albumin Are Controlled by the Joint Action of Fatty Acids and Glucose Binding
VL  - 5
SP  - 2335
DO  - 10.3390/ijms25042335
ER  - 

@article{
author = "Uzelac, Tamara N. and Smiljanić, Katarina and Takić, Marija and Sarac, Ivana and Petovic-Oggiano, Gordana and Nikolić, Milan and Jovanović, Vesna B.",
year = "2024",
abstract = "The binding of ubiquitous serum ligands (free fatty acids) to human serum albumin (HSA)
or its glycation can affect thiol group reactivity, thus influencing its antioxidant activity. The effects
of stearic acid (SA) and glucose binding on HSA structural changes and thiol group content and
reactivity were monitored by fluoroscopy and the Ellman method during a 14-day incubation in
molar ratios to HSA that mimic pathophysiological conditions. Upon incubation with 5 mM glucose,
HSA glycation was the same as HSA without it, in three different HSA:SA molar ratios (HSA:SA-
1:1-2-4). The protective effect of SA on the antioxidant property of HSA under different glucose
regimes (5-10-20 mM) was significantly affected by molar ratios of HSA:SA. Thiol reactivity was fully
restored with 5–20 mM glucose at a 1:1 HSA:SA ratio, while the highest thiol content recovery was in
pathological glucose regimes at a 1:1 HSA:SA ratio. The SA affinity for HSA increased significantly
(1.5- and 1.3-fold, p < 0.01) with 5 and 10 mM glucose compared to the control. These results deepen
the knowledge about the possible regulation of the antioxidant role of HSA in diabetes and other
pathophysiological conditions and enable the design of future HSA-drug studies which, in turn, is
important for clinicians when designing information-based treatments.",
publisher = "MDPI",
journal = "International Journal of Molecular Sciences",
title = "The Thiol Group Reactivity and the Antioxidant Property of Human Serum Albumin Are Controlled by the Joint Action of Fatty Acids and Glucose Binding",
volume = "5",
pages = "2335",
doi = "10.3390/ijms25042335"
}

Uzelac, T. N., Smiljanić, K., Takić, M., Sarac, I., Petovic-Oggiano, G., Nikolić, M.,& Jovanović, V. B.. (2024). The Thiol Group Reactivity and the Antioxidant Property of Human Serum Albumin Are Controlled by the Joint Action of Fatty Acids and Glucose Binding. in International Journal of Molecular Sciences
MDPI., 5, 2335.
https://doi.org/10.3390/ijms25042335

Uzelac TN, Smiljanić K, Takić M, Sarac I, Petovic-Oggiano G, Nikolić M, Jovanović VB. The Thiol Group Reactivity and the Antioxidant Property of Human Serum Albumin Are Controlled by the Joint Action of Fatty Acids and Glucose Binding. in International Journal of Molecular Sciences. 2024;5:2335.
doi:10.3390/ijms25042335 .

Uzelac, Tamara N., Smiljanić, Katarina, Takić, Marija, Sarac, Ivana, Petovic-Oggiano, Gordana, Nikolić, Milan, Jovanović, Vesna B., "The Thiol Group Reactivity and the Antioxidant Property of Human Serum Albumin Are Controlled by the Joint Action of Fatty Acids and Glucose Binding" in International Journal of Molecular Sciences, 5 (2024):2335,
https://doi.org/10.3390/ijms25042335 . .

TY  - JOUR
AU  - Mandić, Danijela
AU  - Nežić, Lana
AU  - Amdžić, Ljiljana
AU  - Vojinović, Nataša
AU  - Gajanin, Radoslav
AU  - Popović, Miroslav
AU  - Đeri, Jugoslav
AU  - Balint, Milena Todorović
AU  - Dumanović, Jelena
AU  - Milovanović, Zoran
AU  - Grujić-Milanović, Jelica
AU  - Škrbić, Ranko
AU  - Jaćević, Vesna
PY  - 2023
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/6327
AB  - Background: Approximately 40% of patients with diffuse large B-cell lymphoma (DLBCL) experience treatment resistance to the first-line R-CHOP regimen. ATP binding cassette (ABC) transporters and survivin might play a role in multidrug resistance (MDR) in various tumors. The aim was to investigate if the coexpression of ABC transporters and survivin was associated with R-CHOP treatment response. Methods: The expression of Bcl-2, survivin, P-glycoprotein/ABCB1, MRP1/ABCC1, and BCRP/ABCC2 was analyzed using immunohistochemistry in tumor specimens obtained from patients with DLBCL, and classified according to the treatment response as Remission, Relapsed, and (primary) Refractory groups. All patients received R-CHOP or equivalent treatment. Results: Bcl-2 was in strong positive correlation with clinical parameters and all biomarkers except P-gp/ABCB1. The overexpression of MRP1/ABCC1, survivin, and BCRP/ABCC2 presented as high immunoreactive scores (IRSs) was detected in the Refractory and Relapsed groups (p < 0.05 vs. Remission), respectively, whereas the IRS of P-gp/ABCB1 was low. Significant correlations were found among either MRP1/ABCC1 and survivin or BCRP/ABCC2 in the Refractory and Relapsed groups, respectively. In multiple linear regression analysis, ECOG status along with MRP1/ABCC1 or survivin and BRCP/ABCG2 was significantly associated with the prediction of the R-CHOP treatment response. Conclusions: DLBCL might harbor certain molecular signatures such as MRP1/ABCC1, survivin, and BCRP/ABCC2 overexpression that can predict resistance to R-CHOP.
PB  - MDPI
T2  - Cancers
T1  - Overexpression of MRP1/ABCC1, Survivin and BCRP/ABCC2 Predicts the Resistance of Diffuse Large B-Cell Lymphoma to R-CHOP Treatment
VL  - 15
IS  - 16
SP  - 4106
DO  - 10.3390/cancers15164106
ER  - 

@article{
author = "Mandić, Danijela and Nežić, Lana and Amdžić, Ljiljana and Vojinović, Nataša and Gajanin, Radoslav and Popović, Miroslav and Đeri, Jugoslav and Balint, Milena Todorović and Dumanović, Jelena and Milovanović, Zoran and Grujić-Milanović, Jelica and Škrbić, Ranko and Jaćević, Vesna",
year = "2023",
abstract = "Background: Approximately 40% of patients with diffuse large B-cell lymphoma (DLBCL) experience treatment resistance to the first-line R-CHOP regimen. ATP binding cassette (ABC) transporters and survivin might play a role in multidrug resistance (MDR) in various tumors. The aim was to investigate if the coexpression of ABC transporters and survivin was associated with R-CHOP treatment response. Methods: The expression of Bcl-2, survivin, P-glycoprotein/ABCB1, MRP1/ABCC1, and BCRP/ABCC2 was analyzed using immunohistochemistry in tumor specimens obtained from patients with DLBCL, and classified according to the treatment response as Remission, Relapsed, and (primary) Refractory groups. All patients received R-CHOP or equivalent treatment. Results: Bcl-2 was in strong positive correlation with clinical parameters and all biomarkers except P-gp/ABCB1. The overexpression of MRP1/ABCC1, survivin, and BCRP/ABCC2 presented as high immunoreactive scores (IRSs) was detected in the Refractory and Relapsed groups (p < 0.05 vs. Remission), respectively, whereas the IRS of P-gp/ABCB1 was low. Significant correlations were found among either MRP1/ABCC1 and survivin or BCRP/ABCC2 in the Refractory and Relapsed groups, respectively. In multiple linear regression analysis, ECOG status along with MRP1/ABCC1 or survivin and BRCP/ABCG2 was significantly associated with the prediction of the R-CHOP treatment response. Conclusions: DLBCL might harbor certain molecular signatures such as MRP1/ABCC1, survivin, and BCRP/ABCC2 overexpression that can predict resistance to R-CHOP.",
publisher = "MDPI",
journal = "Cancers",
title = "Overexpression of MRP1/ABCC1, Survivin and BCRP/ABCC2 Predicts the Resistance of Diffuse Large B-Cell Lymphoma to R-CHOP Treatment",
volume = "15",
number = "16",
pages = "4106",
doi = "10.3390/cancers15164106"
}

Mandić, D., Nežić, L., Amdžić, L., Vojinović, N., Gajanin, R., Popović, M., Đeri, J., Balint, M. T., Dumanović, J., Milovanović, Z., Grujić-Milanović, J., Škrbić, R.,& Jaćević, V.. (2023). Overexpression of MRP1/ABCC1, Survivin and BCRP/ABCC2 Predicts the Resistance of Diffuse Large B-Cell Lymphoma to R-CHOP Treatment. in Cancers
MDPI., 15(16), 4106.
https://doi.org/10.3390/cancers15164106

Mandić D, Nežić L, Amdžić L, Vojinović N, Gajanin R, Popović M, Đeri J, Balint MT, Dumanović J, Milovanović Z, Grujić-Milanović J, Škrbić R, Jaćević V. Overexpression of MRP1/ABCC1, Survivin and BCRP/ABCC2 Predicts the Resistance of Diffuse Large B-Cell Lymphoma to R-CHOP Treatment. in Cancers. 2023;15(16):4106.
doi:10.3390/cancers15164106 .

Mandić, Danijela, Nežić, Lana, Amdžić, Ljiljana, Vojinović, Nataša, Gajanin, Radoslav, Popović, Miroslav, Đeri, Jugoslav, Balint, Milena Todorović, Dumanović, Jelena, Milovanović, Zoran, Grujić-Milanović, Jelica, Škrbić, Ranko, Jaćević, Vesna, "Overexpression of MRP1/ABCC1, Survivin and BCRP/ABCC2 Predicts the Resistance of Diffuse Large B-Cell Lymphoma to R-CHOP Treatment" in Cancers, 15, no. 16 (2023):4106,
https://doi.org/10.3390/cancers15164106 . .

TY  - JOUR
AU  - Zelenović, Nevena D.
AU  - Kojadinović, Milica I.
AU  - Filipović, Lidija
AU  - Vučić, Vesna M.
AU  - Milčić, Miloš K.
AU  - Arsic, Aleksndra
AU  - Popović, Milica M.
PY  - 2023
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/6257
AB  - Backgound/ObjectivesUrolithins (UROs) are the metabolites derived from the gut microbial action on ellagitannins and ellagic acid-rich foods. Following their absorption in the intestine, UROs are transported through the systemic circulation to various tissues where they can express their biological function as antimicrobial, anti-inflammatory, and anticancer agents. In addition to blood plasma, where they can be found as glucuronide and sulfate conjugates, they are also found in urine. Therefore, the interactions of UROs with serum proteins are of great clinical interest.MethodsA powerful technique for examining these urolithin-serum protein interactions is fluorescence spectroscopy. Bovine serum albumin (BSA) is a particularly suitable model protein because it is readily available, affordable, and similar to human serum albumin. This work aimed to study the binding of UROs (urolithin A, UROA and urolithin B, UROB) and their glucuronide conjugates (UROAG and UROBG) to BSA by quenching the intrinsic fluorescence of protein.ResultsThe spectra obtained showed that the binding process is influenced by the polyphenol's structure and the conjugation process with the glucuronide. The calculated Stern Vollmer binding constants (Ksv): UROA and UROB Ksv were 59236   ±   5706 and 69653   ±   14922, respectively, while for UROAG and UROBG, these values were 15179   ±   2770 and 9462   ±   1955, respectively, which showed that the binding affinity decreased with glucuronidation. Molecular docking studies confirmed that all of the studied molecules will bind favorably to BSA. The preferential binding site for both UROs and UROGs is Sudlow I, while UROs will also bind to Sudlow II. URO-Gs can bind to BSA in the cleft region with lower binding scores than for the Sudlow I binding site.ConclusionThe aglycone's higher hydrophobicity increases the binding affinity to BSA, thus reducing its bioavailability in the blood.
PB  - SAGE Publications
T2  - Natural Product Communications
T1  - Interactions of Different Urolithins With Bovine Serum Albumin
VL  - 18
IS  - 5
DO  - 10.1177/1934578X231169366
ER  - 

@article{
author = "Zelenović, Nevena D. and Kojadinović, Milica I. and Filipović, Lidija and Vučić, Vesna M. and Milčić, Miloš K. and Arsic, Aleksndra and Popović, Milica M.",
year = "2023",
abstract = "Backgound/ObjectivesUrolithins (UROs) are the metabolites derived from the gut microbial action on ellagitannins and ellagic acid-rich foods. Following their absorption in the intestine, UROs are transported through the systemic circulation to various tissues where they can express their biological function as antimicrobial, anti-inflammatory, and anticancer agents. In addition to blood plasma, where they can be found as glucuronide and sulfate conjugates, they are also found in urine. Therefore, the interactions of UROs with serum proteins are of great clinical interest.MethodsA powerful technique for examining these urolithin-serum protein interactions is fluorescence spectroscopy. Bovine serum albumin (BSA) is a particularly suitable model protein because it is readily available, affordable, and similar to human serum albumin. This work aimed to study the binding of UROs (urolithin A, UROA and urolithin B, UROB) and their glucuronide conjugates (UROAG and UROBG) to BSA by quenching the intrinsic fluorescence of protein.ResultsThe spectra obtained showed that the binding process is influenced by the polyphenol's structure and the conjugation process with the glucuronide. The calculated Stern Vollmer binding constants (Ksv): UROA and UROB Ksv were 59236   ±   5706 and 69653   ±   14922, respectively, while for UROAG and UROBG, these values were 15179   ±   2770 and 9462   ±   1955, respectively, which showed that the binding affinity decreased with glucuronidation. Molecular docking studies confirmed that all of the studied molecules will bind favorably to BSA. The preferential binding site for both UROs and UROGs is Sudlow I, while UROs will also bind to Sudlow II. URO-Gs can bind to BSA in the cleft region with lower binding scores than for the Sudlow I binding site.ConclusionThe aglycone's higher hydrophobicity increases the binding affinity to BSA, thus reducing its bioavailability in the blood.",
publisher = "SAGE Publications",
journal = "Natural Product Communications",
title = "Interactions of Different Urolithins With Bovine Serum Albumin",
volume = "18",
number = "5",
doi = "10.1177/1934578X231169366"
}

Zelenović, N. D., Kojadinović, M. I., Filipović, L., Vučić, V. M., Milčić, M. K., Arsic, A.,& Popović, M. M.. (2023). Interactions of Different Urolithins With Bovine Serum Albumin. in Natural Product Communications
SAGE Publications., 18(5).
https://doi.org/10.1177/1934578X231169366

Zelenović ND, Kojadinović MI, Filipović L, Vučić VM, Milčić MK, Arsic A, Popović MM. Interactions of Different Urolithins With Bovine Serum Albumin. in Natural Product Communications. 2023;18(5).
doi:10.1177/1934578X231169366 .

Zelenović, Nevena D., Kojadinović, Milica I., Filipović, Lidija, Vučić, Vesna M., Milčić, Miloš K., Arsic, Aleksndra, Popović, Milica M., "Interactions of Different Urolithins With Bovine Serum Albumin" in Natural Product Communications, 18, no. 5 (2023),
https://doi.org/10.1177/1934578X231169366 . .

TY  - JOUR
AU  - Kojadinović, Milica I.
AU  - Glibetić, Marija D.
AU  - Vučić, Vesna M.
AU  - Popović, Milica M.
AU  - Vidović, Nevena Đ.
AU  - Debeljak-Martačić, Jasmina D.
AU  - Arsić, Aleksandra Č.
PY  - 2021
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/4791
AB  - Pomegranate juice (PJ) has potential positive effects in patients with metabolic disturbances due to a high content of polyphenols. The objective of this study was to evaluate effects of a 2-week consumption of dietary doses of PJ on blood pressure, lipid metabolism, and oxidative stress markers in overweight patients with dyslipidemia. Twenty-four patients, 8 males and 16 females, 40-60 years of age, with established overweight and dyslipidemia were randomly assigned into intervention group, who consumed 300 mL of PJ daily for 2 weeks, or control group. After 2 weeks of juice intake, intervention group had significantly lower diastolic blood pressure, low-density lipoprotein cholesterol, aminotransferase, and activity of glutathione peroxidase. Furthermore, patients who consumed PJ had reduced percentage of docosahexaenoic acid (22:6n-3, DHA) in plasma phospholipids and increased estimated activity of stearoyl-CoA desaturase. In erythrocytes, we found a significant increase in the levels of dihomo-gamma- linolenic acid (20:3n-6, DGLA) and DHA, as well as in estimated activity of Delta 6 desaturase, and a decrease in estimated activity of Delta 5 desaturase. These results show that even a short-term consumption of dietary doses of PJ exerts beneficial effects and affects lipid metabolism in overweight patients with dyslipidemia.
PB  - Mary Ann Liebert, Inc, New Rochelle
T2  - Journal of Medicinal Food
T1  - Short-Term Consumption of Pomegranate Juice Alleviates Some Metabolic Disturbances in Overweight Patients with Dyslipidemia
VL  - 24
IS  - 9
DO  - 10.1089/jmf.2020.0122
ER  - 

@article{
author = "Kojadinović, Milica I. and Glibetić, Marija D. and Vučić, Vesna M. and Popović, Milica M. and Vidović, Nevena Đ. and Debeljak-Martačić, Jasmina D. and Arsić, Aleksandra Č.",
year = "2021",
abstract = "Pomegranate juice (PJ) has potential positive effects in patients with metabolic disturbances due to a high content of polyphenols. The objective of this study was to evaluate effects of a 2-week consumption of dietary doses of PJ on blood pressure, lipid metabolism, and oxidative stress markers in overweight patients with dyslipidemia. Twenty-four patients, 8 males and 16 females, 40-60 years of age, with established overweight and dyslipidemia were randomly assigned into intervention group, who consumed 300 mL of PJ daily for 2 weeks, or control group. After 2 weeks of juice intake, intervention group had significantly lower diastolic blood pressure, low-density lipoprotein cholesterol, aminotransferase, and activity of glutathione peroxidase. Furthermore, patients who consumed PJ had reduced percentage of docosahexaenoic acid (22:6n-3, DHA) in plasma phospholipids and increased estimated activity of stearoyl-CoA desaturase. In erythrocytes, we found a significant increase in the levels of dihomo-gamma- linolenic acid (20:3n-6, DGLA) and DHA, as well as in estimated activity of Delta 6 desaturase, and a decrease in estimated activity of Delta 5 desaturase. These results show that even a short-term consumption of dietary doses of PJ exerts beneficial effects and affects lipid metabolism in overweight patients with dyslipidemia.",
publisher = "Mary Ann Liebert, Inc, New Rochelle",
journal = "Journal of Medicinal Food",
title = "Short-Term Consumption of Pomegranate Juice Alleviates Some Metabolic Disturbances in Overweight Patients with Dyslipidemia",
volume = "24",
number = "9",
doi = "10.1089/jmf.2020.0122"
}

Kojadinović, M. I., Glibetić, M. D., Vučić, V. M., Popović, M. M., Vidović, N. Đ., Debeljak-Martačić, J. D.,& Arsić, A. Č.. (2021). Short-Term Consumption of Pomegranate Juice Alleviates Some Metabolic Disturbances in Overweight Patients with Dyslipidemia. in Journal of Medicinal Food
Mary Ann Liebert, Inc, New Rochelle., 24(9).
https://doi.org/10.1089/jmf.2020.0122

Kojadinović MI, Glibetić MD, Vučić VM, Popović MM, Vidović NĐ, Debeljak-Martačić JD, Arsić AČ. Short-Term Consumption of Pomegranate Juice Alleviates Some Metabolic Disturbances in Overweight Patients with Dyslipidemia. in Journal of Medicinal Food. 2021;24(9).
doi:10.1089/jmf.2020.0122 .

Kojadinović, Milica I., Glibetić, Marija D., Vučić, Vesna M., Popović, Milica M., Vidović, Nevena Đ., Debeljak-Martačić, Jasmina D., Arsić, Aleksandra Č., "Short-Term Consumption of Pomegranate Juice Alleviates Some Metabolic Disturbances in Overweight Patients with Dyslipidemia" in Journal of Medicinal Food, 24, no. 9 (2021),
https://doi.org/10.1089/jmf.2020.0122 . .

TY  - JOUR
AU  - Takić, Marija M.
AU  - Zeković, Milica
AU  - Terzić, Brankica
AU  - Stojsavljević, Aleksandar
AU  - Mijusković, Mirjana
AU  - Rađen, Slavica
AU  - Ristić-Medić, Danijela
PY  - 2021
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/4738
AB  - Background: Desaturation and elongation are critical processes in endogenous metabolic fatty acid pathways. Zinc (Zn) is a cofactor for desaturases and elongases enzymes. There is limited evidence regarding the relationships between biomarkers of Zn status, nutritional intake, plasma phospholipid fatty acid profile and clinical outcomes among patients undergoing hemodialysis (HD).Objective: To examine the relationships between dietary and serum levels of Zn and Cu/Zn ratio and to explore associations of these micronutrients with PUFA profile and estimated desaturase and elongase enzyme activities in serum phospholipids among HD patients.Methods: This study included 40 adult patients undergoing hemodialysis treatment. Repeated 24-h recalls were applied for dietary intake assessment. Serum concentration of Zn and Cu were determined using inductively coupled plasma mass spectrometry and fatty acid composition by gas-liquid chromatography. Desaturase and elongase activities were calculated from product-precursor fatty acid ratios.Results: Inadequate dietary Zn intake was found in 55% of HD patients. They all had serum Zn concentration below the reference value of 60 μg/dL (mean 38.8 ± 7.72 μg/dL). Adequate zinc intake was accompanied with significantly higher intake of energy, total fats, SFA, MUFA and proteins. There was no correlation between Zn serum status and Zn intake estimates. Serum Cu/Zn ratio was high, (2.76 ± 0.68), directly and significantly associated with HD period, CRP, BMI, VFA, and inversely with Kt/V, albumin, iron, and iPTH. The n-6/n-3 ratio in plasma phospholipids was elevated (12.25 ± 3.45) and patients with inadequate Zn intake had lower n-3 PUFA intake and status compared to those with adequate intake. Serum Zn concentrations were inversely correlated with linoleic/dihomo-γ-linolenic acid ratio (LA/DGLA) (p = 0.037), related to D6-desaturase activity (p = 0.033) and directly with DGLA relative abundances (p = 0.024). Cu status was inversely associated with EPA level (p = 0.03) and estimates of elongase activity (p = 0.001). Furthermore, positive relationship was found between the Cu/Zn ratio and determined elongase value (p = 0.01).Conclusion: Findings of this study underpin the high prevalence of Zn deficiency and inadequate n-3 PUFA intake and status among subjects undergoing HD. The results obtained indicate that the assessment of Zn status should be a standard parameter of nutritional status screening in HD patients while emphasizing the importance of Cu/Zn determination. Although further research is warranted, Zn and-n-3 PUFA supplementation in HD patients might be beneficial for the prevention and attenuation of adverse health outcomes
PB  - Frontiers Media
T2  - Frontiers in Nutrition
T1  - Zinc Deficiency, Plasma Fatty Acid Profile and Desaturase Activities in Hemodialysis Patients: Is Supplementation Necessary?
VL  - 8
SP  - 688
DO  - 10.3389/fnut.2021.700450
ER  - 

@article{
author = "Takić, Marija M. and Zeković, Milica and Terzić, Brankica and Stojsavljević, Aleksandar and Mijusković, Mirjana and Rađen, Slavica and Ristić-Medić, Danijela",
year = "2021",
abstract = "Background: Desaturation and elongation are critical processes in endogenous metabolic fatty acid pathways. Zinc (Zn) is a cofactor for desaturases and elongases enzymes. There is limited evidence regarding the relationships between biomarkers of Zn status, nutritional intake, plasma phospholipid fatty acid profile and clinical outcomes among patients undergoing hemodialysis (HD).Objective: To examine the relationships between dietary and serum levels of Zn and Cu/Zn ratio and to explore associations of these micronutrients with PUFA profile and estimated desaturase and elongase enzyme activities in serum phospholipids among HD patients.Methods: This study included 40 adult patients undergoing hemodialysis treatment. Repeated 24-h recalls were applied for dietary intake assessment. Serum concentration of Zn and Cu were determined using inductively coupled plasma mass spectrometry and fatty acid composition by gas-liquid chromatography. Desaturase and elongase activities were calculated from product-precursor fatty acid ratios.Results: Inadequate dietary Zn intake was found in 55% of HD patients. They all had serum Zn concentration below the reference value of 60 μg/dL (mean 38.8 ± 7.72 μg/dL). Adequate zinc intake was accompanied with significantly higher intake of energy, total fats, SFA, MUFA and proteins. There was no correlation between Zn serum status and Zn intake estimates. Serum Cu/Zn ratio was high, (2.76 ± 0.68), directly and significantly associated with HD period, CRP, BMI, VFA, and inversely with Kt/V, albumin, iron, and iPTH. The n-6/n-3 ratio in plasma phospholipids was elevated (12.25 ± 3.45) and patients with inadequate Zn intake had lower n-3 PUFA intake and status compared to those with adequate intake. Serum Zn concentrations were inversely correlated with linoleic/dihomo-γ-linolenic acid ratio (LA/DGLA) (p = 0.037), related to D6-desaturase activity (p = 0.033) and directly with DGLA relative abundances (p = 0.024). Cu status was inversely associated with EPA level (p = 0.03) and estimates of elongase activity (p = 0.001). Furthermore, positive relationship was found between the Cu/Zn ratio and determined elongase value (p = 0.01).Conclusion: Findings of this study underpin the high prevalence of Zn deficiency and inadequate n-3 PUFA intake and status among subjects undergoing HD. The results obtained indicate that the assessment of Zn status should be a standard parameter of nutritional status screening in HD patients while emphasizing the importance of Cu/Zn determination. Although further research is warranted, Zn and-n-3 PUFA supplementation in HD patients might be beneficial for the prevention and attenuation of adverse health outcomes",
publisher = "Frontiers Media",
journal = "Frontiers in Nutrition",
title = "Zinc Deficiency, Plasma Fatty Acid Profile and Desaturase Activities in Hemodialysis Patients: Is Supplementation Necessary?",
volume = "8",
pages = "688",
doi = "10.3389/fnut.2021.700450"
}

Takić, M. M., Zeković, M., Terzić, B., Stojsavljević, A., Mijusković, M., Rađen, S.,& Ristić-Medić, D.. (2021). Zinc Deficiency, Plasma Fatty Acid Profile and Desaturase Activities in Hemodialysis Patients: Is Supplementation Necessary?. in Frontiers in Nutrition
Frontiers Media., 8, 688.
https://doi.org/10.3389/fnut.2021.700450

Takić MM, Zeković M, Terzić B, Stojsavljević A, Mijusković M, Rađen S, Ristić-Medić D. Zinc Deficiency, Plasma Fatty Acid Profile and Desaturase Activities in Hemodialysis Patients: Is Supplementation Necessary?. in Frontiers in Nutrition. 2021;8:688.
doi:10.3389/fnut.2021.700450 .

Takić, Marija M., Zeković, Milica, Terzić, Brankica, Stojsavljević, Aleksandar, Mijusković, Mirjana, Rađen, Slavica, Ristić-Medić, Danijela, "Zinc Deficiency, Plasma Fatty Acid Profile and Desaturase Activities in Hemodialysis Patients: Is Supplementation Necessary?" in Frontiers in Nutrition, 8 (2021):688,
https://doi.org/10.3389/fnut.2021.700450 . .