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Umićević N, Kotur-Stevuljević J, Baralić K, Đukić-Ćosić D, Miljaković EA, Đorđević AB, Ćurčić M, Bulat Z, Antonijević B. Increased oxidative stress in shoe industry workers with low-level exposure to a mixture of volatile organic compounds. Arh Hig Rada Toksikol 2024; 75:51-60. [PMID: 38548382 PMCID: PMC10978162 DOI: 10.2478/aiht-2024-75-3804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 11/01/2023] [Accepted: 02/01/2024] [Indexed: 04/01/2024] Open
Abstract
This study aimed to assess the redox status and trace metal levels in 49 shoe industry workers (11 men and 38 women) occupationally exposed to a mixture of volatile organic compounds (VOCs), which includes aliphatic hydrocarbons, aromatic hydrocarbons, ketones, esters, ethers, and carboxylic acids. All measured VOCs were below the permitted occupational exposure limits. The control group included 50 unexposed participants (25 men and 25 women). The following plasma parameters were analysed: superoxide anion (O2 •-), advanced oxidation protein products (AOPP), total oxidative status (TOS), prooxidant-antioxidant balance (PAB), oxidative stress index (OSI), superoxide dismutase (SOD) and paraoxonase-1 (PON1) enzyme activity, total SH group content (SHG), and total antioxidant status (TAS). Trace metal levels (copper, zinc, iron, magnesium, and manganese) were analysed in whole blood. All oxidative stress and antioxidative defence parameters were higher in the exposed workers than controls, except for PON1 activity. Higher Fe, Mg, and Zn, and lower Cu were observed in the exposed vs control men, while the exposed women had higher Fe and lower Mg, Zn, and Cu than their controls. Our findings confirm that combined exposure to a mixture of VOCs, even at permitted levels, may result in additive or synergistic adverse health effects and related disorders. This raises concern about current risk assessments, which mainly rely on the effects of individual chemicals, and calls for risk assessment approaches that can explain combined exposure to multiple chemicals.
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Affiliation(s)
- Nina Umićević
- University of Banja Luka Faculty of Medicine, Department of Toxicology, Banja Luka, Bosnia and Herzegovina
- University of Belgrade Faculty of Pharmacy, Department of Toxicology “Akademik Danilo Soldatović”, Belgrade, Serbia
| | - Jelena Kotur-Stevuljević
- University of Belgrade Faculty of Pharmacy, Department of Medical Biochemistry, Belgrade, Serbia
| | - Katarina Baralić
- University of Belgrade Faculty of Pharmacy, Department of Toxicology “Akademik Danilo Soldatović”, Belgrade, Serbia
| | - Danijela Đukić-Ćosić
- University of Banja Luka Faculty of Medicine, Department of Toxicology, Banja Luka, Bosnia and Herzegovina
- University of Belgrade Faculty of Pharmacy, Department of Toxicology “Akademik Danilo Soldatović”, Belgrade, Serbia
| | - Evica Antonijević Miljaković
- University of Belgrade Faculty of Pharmacy, Department of Toxicology “Akademik Danilo Soldatović”, Belgrade, Serbia
| | - Aleksandra Buha Đorđević
- University of Belgrade Faculty of Pharmacy, Department of Toxicology “Akademik Danilo Soldatović”, Belgrade, Serbia
| | - Marijana Ćurčić
- University of Belgrade Faculty of Pharmacy, Department of Toxicology “Akademik Danilo Soldatović”, Belgrade, Serbia
| | - Zorica Bulat
- University of Belgrade Faculty of Pharmacy, Department of Toxicology “Akademik Danilo Soldatović”, Belgrade, Serbia
| | - Biljana Antonijević
- University of Banja Luka Faculty of Medicine, Department of Toxicology, Banja Luka, Bosnia and Herzegovina
- University of Belgrade Faculty of Pharmacy, Department of Toxicology “Akademik Danilo Soldatović”, Belgrade, Serbia
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Aykac K, Ozsurekci Y, Tanir Basaranoglu S, Demir OO, Avcioglu G, Erel O, Ceyhan M. Oxidant and antioxidant balance in children with bacteremia. Minerva Pediatr (Torino) 2023; 75:876-883. [PMID: 32881474 DOI: 10.23736/s2724-5276.20.05748-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
Abstract
BACKGROUND There is a crucial balance between oxidant and antioxidant defense mechanisms. We aimed to evaluate the role of the balance of these systems in children with bloodstream infection. METHODS We analyzed prospectively oxidant and antioxidant stress parameters from serum samples of children with BSI besides demographic and clinical data of children. Serum levels of the total antioxidant status (TAS), total oxidant status (TOS), albumin, plasma thiol, disulphide, catalase (CAT), myeloperoxidase (MPO), ischemia-modified albumin (IMA) levels, ferroxidase and arylesterase (ARES) activity were evaluated in both patients and healthy controls. RESULTS A total of 113 children were evaluated, 50 of them had bacteremia and the remaining 63 were healthy subjects. The median TOS values were 18.5 µmol H2O2/L and 13.1 µmol H2O2/L in patient and control groups, respectively with a statistically significant difference between groups. The mean serum IMA levels were 0.8±0.1 absorbance unit (ABSU) in patients and 0.5±0.09 ABSU in control, the difference between groups was statistically significant. The native thiol, total thiol levels and the disulphide levels were significantly lower in the patient group as compared with the control group. The myeloperoxidase level was 136 U/L in patients and 107 in controls with a statistically significant difference between groups. CONCLUSIONS TOS, IMA, MPO, and particularly plasma thiols seem good candidates for accurate diagnosis of bacteremia in children.
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Affiliation(s)
- Kubra Aykac
- Department of Pediatric Infectious Diseases, Faculty of Medicine, Hacettepe University, Ankara, Türkiye
| | - Yasemin Ozsurekci
- Department of Pediatric Infectious Diseases, Faculty of Medicine, Hacettepe University, Ankara, Türkiye -
| | - Sevgen Tanir Basaranoglu
- Department of Pediatric Infectious Diseases, Faculty of Medicine, Hacettepe University, Ankara, Türkiye
| | - Osman O Demir
- Department of Pediatric Diseases, Faculty of Medicine, Hacettepe University, Ankara, Türkiye
| | - Gamze Avcioglu
- Department of Clinical Biochemistry, Atatürk Training and Research Hospital, Ankara, Türkiye
| | - Ozcan Erel
- Department of Clinical Biochemistry, Atatürk Training and Research Hospital, Ankara, Türkiye
| | - Mehmet Ceyhan
- Department of Pediatric Infectious Diseases, Faculty of Medicine, Hacettepe University, Ankara, Türkiye
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Sedighi I, Taheri-Moghadam G, Emad-Momtaz H, Vaseghi G, Eshraghi A, Asnaashari F, Mehrpooya M. Protective Effects of Omega-3 Fatty Acids Supplementation Against Renal Parenchymal Scarring in Children with Acute Pyelonephritis: Results of a Pilot Clinical Trial. Curr Pediatr Rev 2022; 18:72-81. [PMID: 34503428 DOI: 10.2174/1573396317666210909153643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 06/05/2021] [Accepted: 06/30/2021] [Indexed: 11/22/2022]
Abstract
AIM This trial aimed to determine if supplementation with omega-3 fatty acids as an adjunct therapy to antibiotic treatment can have protective effects against renal scar formation after acute pyelonephritis (APN) in pediatric patients. BACKGROUND Current evidence points out that besides antibiotic treatment, early administration of antioxidant and anti-inflammatory compounds may be effective in reducing the occurrence of renal damage following APN in children. OBJECTIVE The main endpoint of the trial was the comparison of the development of renal scarring formation after APN in an omega-3 fatty acids-treated group and in a control-treated group. METHODS This prospective randomized, controlled trial study was conducted from March 2016 to May 2018 on 60 children with a diagnosis APN in a tertiary hospital in Iran. After the diagnosis of APN based on the clinical signs and symptoms, urine analysis, urine culture, and dimercaptosuccinic acid renal scan (DMSA scan), the patients were randomly allocated into either the control group (n=30 patients: received standard antibiotic treatment only) or the intervention group (n=30 patients: received standard antibiotic-treatment in combination with oral omega-3 fatty acids based on the children's weight for three consecutive days). A second DMSA scan was performed for the patients at a minimum of six months after treatment. The development of renal scars was evaluated by comparing the baseline DMSA scan lesions with the follow-up DMSA scan lesions. RESULTS Fifty patients, including 26 and 24 individuals in the control and intervention groups, respectively, completed the entire course of the study. Renal parenchymal involvement based on the baseline DMSA scan was similar in the two groups (p-value =0.85, 0.90, and 0.53 regarding the right, left, and both kidney units together, respectively). Although comparison of the follow-up DMSA scan lesions to the baseline DMSA scan lesions considering the right and left kidneys as separate units between two groups did not reach the significant level, when considering both left and right kidney units together, results showed a statistically significant difference between groups in favor of the intervention group (p-value =0.04). CONCLUSION Although preliminary, the results of this study showed that administration of omega-3 fatty acids, a natural supplement with well-known anti-inflammatory and antioxidant properties, as an adjunct therapy to standard antibiotic treatment might significantly reduce the incidence of the occurrence renal scarring following APN in children. Confirmation of these results requires further studies.
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Affiliation(s)
- Iraj Sedighi
- Pediatrics Department, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Ghazal Taheri-Moghadam
- Department of Clinical Pharmacy, School of Pharmacy, Medicinal Plants and Natural Products Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Hossein Emad-Momtaz
- Division of Pediatric Nephrology, Besat Hospital, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Golnaz Vaseghi
- Applied Physiology Research Center, Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Azadeh Eshraghi
- Department of Clinical Pharmacy, School of Pharmacy, Iran University of Medical Sciences, Tehran, Iran
| | - Farzaneh Asnaashari
- Department of Community and Preventive Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Maryam Mehrpooya
- Department of Clinical Pharmacy, School of Pharmacy, Medicinal Plants and Natural Products Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
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Anti-apoptotic effects of Sonic hedgehog signalling through oxidative stress reduction in astrocytes co-cultured with excretory-secretory products of larval Angiostrongylus cantonensis. Sci Rep 2017; 7:41574. [PMID: 28169282 PMCID: PMC5294578 DOI: 10.1038/srep41574] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Accepted: 12/20/2016] [Indexed: 12/21/2022] Open
Abstract
Angiostrongylus cantonensis, the rat lungworm, is an important aetiologic agent of eosinophilic meningitis and meningoencephalitis in humans. Co-culturing astrocytes with soluble antigens of A. cantonensis activated the Sonic hedgehog (Shh) signalling pathway and inhibited the apoptosis of astrocytes via the activation of Bcl-2. This study was conducted to determine the roles of the Shh signalling pathway, apoptosis, and oxidative stress in astrocytes after treatment with excretory-secretory products (ESP) from A. cantonensis fifth-stage larvae. Although astrocyte viability was significantly decreased after ESP treatment, the expression of Shh signalling pathway related proteins (Shh, Ptch-1 and Gli-1) was significantly increased. However, apoptosis in astrocytes was significantly decreased after activation of the Shh signalling pathway. Moreover, superoxide and hydrogen superoxide levels in astrocytes were significantly reduced after the activation of Shh pathway signalling due to increasing levels of the antioxidants catalase and superoxide dismutase. These findings indicate that the anti-apoptotic effects of the Shh signalling pathway in the astrocytes of mice infected with A. cantonensis are due to reduced levels of oxidative stress caused by the activation of antioxidants.
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Soleimani G, Sadeghi-Bojd S, Teimouri A, Nakhaee A, Sheikhhosseini A. Evaluation of oxidant-antioxidant balance and total antioxidant capacity of serum in children with urinary tract infection. Niger Med J 2016; 57:114-8. [PMID: 27226686 PMCID: PMC4872488 DOI: 10.4103/0300-1652.182073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Background: Urinary tract infection (UTI) is the most common bacterial infections in children. This studyaimed to investigate the oxidative and antioxidate status of plasma in patients with UTI and to compare them with those of the controls. Methods: This case–control study of 50–75 children in the given order was performed in 2013 at the Pediatric Clinic of infections in Zahedan Hospital of Ali Ibn Abi Talib. The antioxidative status of plasma were evaluated by measuring the total antioxidant capacity (TAC) The oxidative status of samples was assessed by measuring the total peroxide and the oxidative stress index (OSI) levels. The means of the parameters were compared and the relationship among them was determined. Data were analyzed using SPSS 20 (IBM Corp. Released 2011. IBM SPSS Statistics for Windows, Version 20.0. Armonk, NY: IBM Corp). Student's t-test and Mann–Whitney U-test were applied in various situations of our questions; 95% confidence interval was considered for the level of significance. Results: The results showed that total oxidant serum status in UTI patients was higher compared to controls when total antioxidant serum was lower. The balance of oxidant-antioxidant serum was in favor of oxidant serum and this term was confirmed by OSI. Conclusion: Our results showed that the plasma levels of TAC in patients with UTI were decreased compared to controls, and oxidant-antioxidant balance and OSI caused increased OS in patients.
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Affiliation(s)
- Gholamreza Soleimani
- Department of Pediatrics, School of Medicine, Children and Adolescents Health Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Simin Sadeghi-Bojd
- Department of Pediatrics, School of Medicine, Children and Adolescents Health Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Alireza Teimouri
- Children and Adolescents Health Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Alireza Nakhaee
- Department of Clinical Biochemistry, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Alireza Sheikhhosseini
- Department of Pediatrics, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
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