Abstract
Leishmaniasis is a widespread tropical infection; cutaneous leishmaniasis (CL) is the most common form of this disease known to cause significant morbidity. Trace metals, including selenium, zinc, iron, and copper, are required for the activity of several enzymes involved in immune system responses. The aim of this research was to measure the serum levels of selenium (Se), zinc (Zn), copper (Cu), iron (Fe), and Zn/Cu ratio in patients with CL. In this case-control study, 80 patients with CL and 80 healthy volunteers (not exposed to CL) from a CL endemic region in southwest Iran agreed to participate. Both clinical and parasitological verifications were made to include each subject as a CL-positive case. A questionnaire was completed for each participant which included the following criteria: age (year), height (cm), weight (kg), body mass index (kg/m2), and duration of disease (day). The biochemical assays were performed according to the standard protocols, and the values of Zn, Cu, Se, and Fe were expressed in micrograms per deciliter (μg/dl). All results were expressed as mean ± standard deviation (SD), and the statistical significance level was defined to be less than 0.05 (P < 0.05). There were no statistically significant differences in terms of mean values of age, body weight, height, and body mass index between CL patients and the control group (P > 0.05). The mean ± SD concentrations of Zn, Fe, and Se in the control group were found to be 118.87 ± 6.35 μg/dl, 123.00 ± 8.40 μg/dl, and 11.26 ± 1.88 μg/dl, respectively. These trace elements (TEs) were statistically lower (P < 0.001) in patients with CL (case group) with values of 83.05 ± 7.32 μg/dl for Zn, 86.51 ± 10.09 μg/dl for Fe, and 3.83 ± 1.20 μg/dl for Se. We have also observed that serum levels of Cu in CL-positive group were significantly higher than in the controls (P < 0.001). Furthermore, CL patients had significantly lower Zn/Cu ratio than controls (0.63 ± 0.05 μg/dl vs. 1.11 ± 0.10; P < 0.001). The alternation in serum levels of TEs may be a part of the defense strategy of the organism. Based on these results, it can be suggested that serum levels of these TEs can be a useful marker to estimate the prognosis of CL infection.
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Abbreviations
- BMI:
-
Body mass index
- CL:
-
Cutaneous leishmaniasis
- Cu:
-
Copper
- DALYs:
-
Disability adjusted life years
- EMR:
-
Eastern Mediterranean Region
- Fe:
-
Iron
- GSH-Px:
-
Glutathione peroxidases
- H2O2 :
-
Hydrogen peroxide
- IFN-γ:
-
Interferon-γ
- IL-1:
-
Interleukin 1
- MCL:
-
Mucocutaneous leishmaniasis
- MT:
-
Metallothionein
- SD:
-
Standard deviation
- Se:
-
Selenium
- SOD:
-
Superoxide dismutase
- SPSS:
-
Statistical Package for the Social Sciences
- TEs:
-
Trace elements
- TNF-α:
-
Tumor necrosis factor alpha
- VL:
-
Visceral leishmaniasis
- WHO:
-
World Health Organization
- Zn:
-
Zinc
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Acknowledgments
The authors would like to thank all staff at the healthcare centers in Abadan and Khorramshahr cities. We are very grateful to Mrs. Fatemeh Maghsoudi (Abadan Faculty of Medical Sciences, Abadan, Iran) for her helpful consultation and comments on the manuscript.
Funding
This study was financially supported by Grant No. 98 U-591 from the Abadan Faculty of Medical Sciences, Abadan, Iran.
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Conceptualization: Mehdi Sagha Kahvaz, Shahrzad Soltani, and Masoud Foroutan. Data curation: Mehdi Sagha Kahvaz. Formal analysis: Sheyda Soltani. Investigation: Shahrzad Soltani and Masoud Foroutan. Software: Sheyda Soltani. Methodology: Mehdi Sagha Kahvaz, Shahrzad Soltani, and Masoud Foroutan. Supervision: Mehdi Sagha Kahvaz and Shahrzad Soltani. Funding acquisition: Mehdi Sagha Kahvaz. Project administration: Mehdi Sagha Kahvaz and Shahrzad Soltani. Writing—original draft: Masoud Foroutan and Shahrzad Soltani. Writing—review and editing: Manuela Colla Carvalheiro, Shahrzad Soltani, and Masoud Foroutan.
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All subjects voluntarily agreed to participate. A written informed consent was obtained from adult persons and the parent or guardian of children less than 15 years old. This study received the approval from the Abadan Faculty of Medical Sciences Ethical Committee (IR.ABADANUMS.REC.1398.091). Ethical issues (including plagiarism, misconduct, data fabrication and/or falsification, double publication and/or submission, redundancy, etc.) have been completely observed by the authors.
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Kahvaz, M.S., Soltani, S., Soltani, S. et al. Low Serum Levels of Selenium, Zinc, Iron, and Zinc/Copper Ratio in an Endemic Region of Cutaneous Leishmaniasis in Southwest Iran. Biol Trace Elem Res 199, 1291–1296 (2021). https://doi.org/10.1007/s12011-020-02271-z
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DOI: https://doi.org/10.1007/s12011-020-02271-z