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Article

A Pilot Study on the Association of Lead, 8-Hydroxyguanine, and Malondialdehyde Levels in Opium Addicts’ Blood Serum with Illicit Drug Use and Non-Addict Persons

by
Farzaneh Allahdinian Hesaruiyeh
1,2,
Saeed Rajabi
3,
Mohadeseh Motamed-Jahromi
4,
Mohammad Sarhadi
5,
Michelle L. Bell
6,
Razieh Khaksefidi
3,5,
Somayeh Sarhadi
7,
Leili Mohammadi
8,
Kamal Dua
9,10,11,
Amin Mohammadpour
3,* and
Paolo Martelletti
12,*
1
Department of Toxicology, Faculty of Pharmacy, Shahreza Branch, Islamic Azad University, Shahreza P.O. Box 311-86145, Iran
2
Clinical Core Laboratory, Ali ibn Abi Talib Hospital Complex, Zahedan University of Medical Sciences, Zahedan 98167-43463, Iran
3
Student Research Committee, School of Health, Shiraz University of Medical Sciences, Shiraz 71348-45794, Iran
4
Nursing School, Fasa University of Medical Science, Fasa 74616-86688, Iran
5
Cellular and Molecular Research Center, Research Institute of Cellular and Molecular Sciences in Infectious Diseases, Zahedan University of Medical Sciences, Zahedan 98167-43463, Iran
6
School of Forestry and Environmental Studies, Yale University, New Haven, CT 06520, USA
7
Department of Biology, Faculty of Sciences, Hamedan Branch, Islamic Azad University, Hamedan 15847-43311, Iran
8
Environmental Health, Infectious Diseases and Tropical Medicine Research Center, Research Institute of Cellular and Molecular Sciences in Infectious Diseases, Zahedan University of Medical Sciences, Zahedan 98167-43463, Iran
9
Centre for Inflammation, Centenary Institute, Sydney, NSW 2050, Australia
10
Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute (HMRI) & School of Biomedical Sciences and Pharmacy, University of Newcastle, Callaghan, NSW 2308, Australia
11
Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, Ultimo, NSW 2007, Australia
12
Department of Clinical and Molecular Medicine, Sapienza University of Rome, 00185 Rome, Italy
 
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*
Authors to whom correspondence should be addressed.
Int. J. Environ. Res. Public Health 2022, 19(15), 9110; https://doi.org/10.3390/ijerph19159110
Submission received: 22 June 2022 / Revised: 11 July 2022 / Accepted: 20 July 2022 / Published: 26 July 2022
(This article belongs to the Special Issue Effect of Alcohol Consumption and Drug Use on Mental Health and Well-Being)
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Abstract

:
While a large body of literature has shown the health problems of illicit drug use, research is needed on how substance abuse impacts DNA damage and contaminants in blood, especially given Pb-contaminated opium. This pilot study aimed to evaluate the levels of lead (Pb), 8-hydroxy di-guanine (8-oxo-Gua), and malondialdehyde (MDA) in the blood serum of opium addicts and non-addict people. The current study is a case–control study with a cross-sectional design. A sample of 50 opium-addicted and non-addict adults were chosen for this study using convenience and random sampling methods. Participants were divided into two groups: addicts and non-addicts. The atomic absorption spectroscopy method was used to measure the quantity of Pb, and the Enzyme-Linked Immunosorbent Assay (ELISA) method was used to measure the amount of 8-oxo-Gua and MDA. The data were analyzed using an independent t-test. The results show that the amount of Pb in the blood serum of addicted women and men was higher than levels in non-addict men and women, for the study participants (p-value = 0.001). Blood levels were not significantly different between addicts and non-addicts for men or women for 8-oxo-Gua (p-value = 0.647 for women and p-value = 0.785 for men) and MDA (p-value = 0.867 for women and p-value = 0.995 for men). In general, addicts’ blood Pb levels were found to be substantially higher than those of normal non-addict persons in this pilot study. As a result, testing for blood Pb levels in addicts may be informative in instances when symptoms are inconclusive.

1. Introduction

Drug addiction is one of the most visible psychological and social diseases that may quickly disrupt the individual, familial, social, and cultural life of a society, and rising addiction to stimulants and pharmaceutical drugs can modify mood and behavior. Addiction can adversely affect the workforce, jeopardize individual motivation and interests, and deplete the monetary and spiritual resources of individuals and communities. Substance misuse and addiction are multifaceted illnesses having biological, psychological, social, and spiritual origins and consequences [1]. The rise in illicit drug use has become a major concern for all communities. Substance addiction and misuse have evolved into a socio-therapeutic concern [2]. Trends in usage include the decrease in the mean age of consumers [3]. The frequency of occupational lead (Pb) poisoning in adults has declined in recent years due to increased workplace safety and improving housing characteristics [4], although Pb-contaminated drugs could be an emerging source.
A comprehensive investigation of the phenomena of addiction reveals that illicit drug usage has existed in past societies and that public knowledge is continually growing as a result of scientific discoveries and education campaigns [5]. In addition, the number of illicit drugs available on the market has expanded. As access to abused substances and the types of substances evolve, many, particularly youth and those in middle age, are becoming increasingly active in illicit drug use. The number of illicit drug users has been increasing, posing a substantial public health burden [6].
Due to the consumption of Pb-contaminated opium, a new kind of Pb poisoning is progressively arising. In opium users, pathological signs such as abdominal pain, neuropathy, and anemia have been noted. These findings might imply Pb toxicity in these people, emphasizing the significance of screening them for Pb poisoning [7]. Lead is a heavy metal that can cause acute or chronic poisoning in humans [8]. Industrial pollutants, soils, automobile emissions, and contaminated foods are the most common causes of Pb exposure. Poisoning can result from contact with Pb from any of these routes, whether it is through the mouth, inhalation, or the skin [9,10].
One of the most prevalent DNA lesions generated by reactive oxygen species is 8-hydroxy-di-guanine (8-oxo-Gua). This can result in adenine-incompatible pairings on the genome, such as G to T and C to A [11]. The 8-oxo-Gua enzyme is produced by damaged sequences of DNA as a result of drug usage, and it can be utilized as a biomarker to monitor drug use [12].
Malondialdehyde (MDA) is an active and highly reactive aldehyde molecule formed in the human body by the peroxidation of unsaturated fatty acids [13]. As a result, the degree of fat peroxidation may be recognized and utilized as a marker to quantify the level of oxidative stress in an organism by measuring the quantity of MDA in different biological samples [14]. MDA is an active and highly reactive chemical that assaults the function of other molecules while connecting with them covalently and forcefully, altering molecular function and, eventually, cell function [13,14]. The pathophysiology of abused substances is associated with oxidative stress [15]. The oxidative stress process causes lipid and nucleic acid oxidation. As a significant endogenous result of lipid peroxidation, MDA is an essential biomarker of oxidative stress and has been related to illicit drug use [15].
Human biomonitoring is concerned with the detection and distribution of contaminants and related metabolites in the human body, as well as associated disorders. To measure exposure to chemicals or related metabolites, biomonitoring in biological matrices such as urine, serum, and blood can be used [16]. Pollutant concentrations in serum may be indicative of their circulation across organs in the human body. As a result, a high-throughput extraction approach based on a tiny volume of serum sample is required, as well as an instrumental analysis method capable of detecting minuscule levels of contaminants with high precision [17,18,19].
Scientific evidence is needed on whether levels of Pb, 8-oxo-Gua, and MDA are elevated by substance abuse. Due to the limited number of samples, this study was conducted as a pilot study. In this pilot study, the levels of Pb, 8-oxo-Gua, and MDA were compared between a patient group of opium addicts referred to the Zahedan addiction and detoxification clinic, and a non-addict control group, to determine the possible role of Pb-infected opium abuse. Due to the great prevalence of opium addiction and the associated individual and social complications, this study was conducted to evaluate whether substance abuse is introducing new sources of Pb exposure and acute or chronic poisoning.

2. Materials and Methods

2.1. Study Population

The current pilot study is a case–control analysis with a cross-sectional strategy that was conducted in 2020 [13]. Addicts and non-addict persons residing in Zahedan, Iran, constituted the study population. In the center of the addiction and detoxification clinic (Life Revitalization Center) in Zahedan, Iran, a sample was randomly selected from the patient population and divided into two groups, an experimental group (25 participants with addiction) and a control group (25 participants without addiction), using the accessible method. In the accessible method, the available people in the community are randomly selected [20]. The control group comprised 25 non-addict people who were as similar to the experimental group (addicts) as feasible in terms of age and socioeconomic status (education level and employment), but were not addicts.
Inclusion criteria for the addict group included a history of opium use for at least 3 years, except for users of tramadol, acetaminophen codeine, and diphenoxylate, and those aged from 20 to 50 years old. Opium use was defined as the self-reported use of opium. The addicts in this pilot study are persons who use drugs often and every day, and who suffer from physical pains, lethargy, and hangovers if they do not use them. Exclusion criteria included a history of Pb poisoning; a history of occupational exposure to Pb such as battery making, soldering, dyeing, pottery, and plumbing; and specific physical and psychological problems such as physical disability, paralysis, autism, depression, and mental retardation. Importantly, “addicts” in this pilot study refers to opium addicts specifically. To generate a control group, all addict participants were requested to recommend a member of their first-degree family or, if that was not feasible, a member of their second-degree family who was the same sex as the participant and with an age gap of fewer than 5 years. Then, using a written questionnaire, all demographic information, health status, and lifestyle information from both groups were collected.

2.2. Sample Preparation and Analysis

To measure blood Pb, 8-oxo-Gua, and MDA levels, 5 mL of venous blood from the study groups was collected in sterile tubes for blood (containing EDTA as an anticoagulant), and atomic absorption spectroscopy (AAS), Enzyme-Linked Immunosorbent Assay (ELISA) Kit 8-hydroxy-di-guanine, and ELISA Kit malondialdehyde was used to investigate the amounts of Pb, 8-oxo-Gua, and MDA in the blood serum of these participants.
The amount of radiation absorbed by the atoms of the element provides the basis for atomic-absorption spectroscopy, and the amount of radiation absorbed is proportional to the element’s concentration [21]. A monochromatic beam is first generated in this procedure using hollow-cathode lamps or electric discharges. To accomplish this, the sample must first be dissolved in a specific solvent before being injected into the flame via a sprayer, where it becomes a free atom. These atoms pass some of the monochromatic beams after they have passed. They are quickly absorbed, and the intensity of the radiation is reduced [21].
The ELISA kit, known as Enzyme Immunoassay (EIA), is a biochemical technique that can be used to check for the existence of an antigen or antibody in a sample. It is one of the most potent laboratory procedures for diagnosing immune system problems. The amount of antigen fixed on the surface of a container or plate is then coupled to the antigen by a specific antibody that is dropped on the surface in a simple ELISA method. Antigens and antibodies are routinely detected using ELISA. Thus, one of these two compounds is fixed in a solid bed and utilized to detect another, but any pair of substances that tend to have high binding strength, such as an antigen and antibody, can also be used [22].

2.3. Quality Assurance and Quality Control (QA/QC)

The standard Pb curve (Figure 1a) was plotted using standard Pb solutions of 0, 100, 200, 500, 1000, and 2000, (µg/L) ppb, and the absorption for each concentration was at 283.3 nm. The 2000 ppb standard was prepared first, followed by the rest of the standard solutions. Then, 0.20 mL of the manufactured standard 1000 µg/mL Pb was transferred under the hood into a 100 mL balloon, then made up to volume with 1% v/v nitric acid and 65% purity, and mixed well with a mechanical stirrer to prepare the 2000 ppb standard [23]. Similarly, standard curves for 8-oxo-Gua (Figure 1b) and MDA (Figure 1c) with standard concentrations of 0, 10, 20, 30, 60, and 130 ppb were also plotted at 450 nm. Pb, 8-oxo-Gua, and MDA all have R2 values between 0.890 and 0.999, indicating a high correlation.

2.4. Statistical Analysis

The Kolmogorov–Smirnov analysis was applied with SPSS-v.20 (SPSS Inc., Chicago, IL, USA) statistical software to determine that the collected data of the individuals had a normal distribution, and an independent t-test was utilized to compare the results of the opium addict and non-addict persons.

3. Results and Discussion

Table 1 shows that the majority of addicts (60%) and non-addicts (52%) were males. Additionally, most addicts (76%) and non-addicts (72%) are between 20 and 40 years old. Moreover, over half of both addicted and non-addicted individuals had an academic qualification (e.g., Associate’s degree, BSc., MSc., and Ph.D.), and most addicts and non-addicts were employed, according to the study’s findings. A total of 16% of non-addicts had a history of drug use, compared to 36% of addicts with a history of 3 years, 28% with a history of 4 years, 20% with a history of 5 years, and 16% with a history of more than 5 years. The majority of addicts in the survey were opium users, with 20% of non-addicts having used illicit drugs including opium, heroin, marijuana, and other substances.
Table 2 shows that the frequency of Pb in the blood serum of addicts is higher than the level of Pb in the blood serum of non-addict participants by concentrations of more than 25 mg/dL. When comparing the amounts of 8-oxo-Gua and MDA in addicts and non-addict participants, there is no substantial difference.
As shown in Table 3, the average Pb concentration in addicted and non-addict women and men significantly differs. The p-value was smaller than 0.05, indicating statistical significance. In other words, the concentration of Pb in addicted women’s blood serum is higher than that in non-addict women. The mean concentration of 8-oxo-Gua in addicted and non-addict women and men, on the other hand, did not differ significantly (p-value = 0.647 for women, 0.785 for men). Furthermore, there was no significant difference in the MDA concentrations of addicted and non-addict women and men (p-value = 0.867 for women, p-value = 0.995 for men). These findings indicate that illicit drug use is strongly and positively associated with increases in the concentration of Pb in blood serum, but not with a rise in the concentrations of 8-oxo-Gua and MDA.
Occupational Pb poisoning has declined as the primary source of Pb toxicity in recent years, but new non-occupational origins have developed [24,25]. In the past few decades, the negative consequences of opioids have become a prominent problem in the study region of Iran. Nevertheless, multiple case reports have been published about opium-related Pb toxicity [26,27]. Lead is poisonous to various body systems and can manifest itself in several different ways. Colicky abdominal symptoms, bowel problems, decreased appetite, vomiting, as well as other organ-related symptoms such as joint pain, muscle aches, dizziness, sexual dysfunction, sleeplessness, nervousness, tiredness, anemia, renal disease, confusion, encephalitis, and convulsions are all major signs of Pb poisoning [28,29,30,31]. Abdominal discomfort and anemia are common symptoms of opium-related Pb poisoning. Constipation is common among opium users. Intense abdominal pain has a widely varying diagnosis, and Pb toxicity should be evaluated as an additional differential diagnosis in addicts who report stomach pain in addition to the main potential illness [32,33]. Similarly, Farzaneh et al. found similar outcomes in their research. According to the findings of this study, the concentration of blood Pb in addicts is higher than in non-addict persons [34].
Reactive oxygen species (ROS) and other oxidizing species attack biomolecules directly, causing damage to lipids, proteins, and, if contained within the cell nucleus, DNA. DNA damage can become severe in the presence of frequent and prolonged intra-nuclear ROS, and excessive DNA damage leads to genomic instability, which can lead to carcinogenesis [35,36]. Endogenous ROS, such as the hydroxyl radical (HO•) produced during normal oxidative metabolism, can cause chemical changes in purines and pyrimidines, affecting gene stability [37,38]. Due to its great reactivity, HO• formed in a distant cell compartment is unlikely to spread into the cell nucleus, and it has been postulated that H2O2 operates as a diffusible latent type of HO• that combines with a metal ion in the proximity of a DNA molecule to produce the oxidant component. Others have proposed that lipid peroxidation molecules serve as a bridge between endogenous metabolic products, xenobiotic agent-induced changes, and DNA impacts. In a cell with replicative capacity, every oxidative damage that is not treated might become a permanent mutation, increasing the risk of carcinogenesis [39,40,41,42]. The particulate matter in cigarette smoke includes stable ROS with extended half-lives, and certain species may be found in the gas phase of cigarette smoke. These reactive species may cause harm by interacting directly with tissues and cell membranes. Tissue injury involves inflammation, which leads to the release of more oxidative species, resulting in a redox state of disequilibrium. Because of the mispairing of 8-oxo-Gua with adenine, the interaction between ROS and DNA might result in the production of oxidized DNA bases such as 8-oxo-Gua, which can trigger base alterations [37,43,44]. Moreover, certain mechanisms involved in DNA damage and the anti-oxidative defense system were shown to have no effect from smoking. 8-oxo-Gua concentrations in peripheral blood lymphocytes have similarly generated inconsistent findings, with some studies indicating higher amounts in smokers than non-smokers [45,46] and others showing no increase [47,48].
The activation of oxidative stress in biological processes can result in lipid peroxidation, which can change cell structure and lipid metabolism in the human biological system. A rise in oxidative stress may have negative repercussions. In many illnesses, tumors, and malignancies, the oxidative alteration of DNA, protein, and lipids plays a critical role [49,50]. Cell damage and death are caused by oxidative stress, which leads to pathologies such as cardiovascular disease, inflammatory diseases, neuropathies, acquired immune deficiency syndrome (AIDS), renal disease, diabetes mellitus, cancer [51], Parkinson’s disease [52], atherosclerosis, Alzheimer’s, rheumatoid arthritis, schizophrenia, thalassemia, male and female infertility, hypertension, muscle degeneration, asthma, heart failure, and many other disorders [53]. Drug-induced oxidative stress adds to cytotoxicity. The antioxidant defense system is weakened by persistent drug misuse; in illicit drug addicts, a rise in oxidative stress and a lack of antioxidant defense mechanisms eventually disturb the physiological balance and lead to diseases [15]. MDA is a crucial indicator for determining lipid peroxidation levels. Our findings were similar to the results of Najafi’s study indicating little difference in serum MDA levels between illicit drug users and non-users [54].

4. Study Limitations and Strengths

One of the study’s strengths is the evaluation of Pb, 8-oxo-Gua, and MDA in opium addicts as a special group. However, no previous research has been conducted on the association between Pb, 8-oxo-Gua, and MDA and illicit drug usage in Iranian addicts. A major limitation of this research is that it is cross-sectional in design and does not have a temporal element. Furthermore, given the pilot study design, the analysis cannot account for illicit drug variance. The results are based on opium addicts from addiction and detoxification treatment in Zahedan, Iran, and may not be generalizable to those with addictions to other substances, those who are less likely to seek treatment, and those in other communities. Other limitations include the control group, which may include addicts, and the sample size. Information from the questionnaire was self-reported. For these reasons, while results are informative, they should be treated with caution and should not be used to confidently identify causal associations.

5. Conclusions

In this pilot study, the amount of Pb in blood serum was higher in the opium addict groups, for both men and women, than in the control group, and the difference was statistically significant. Furthermore, the distribution of participant characteristics (e.g., age) was roughly similar between the opium addicts and the control group, although the addicts overall had lower education levels and more unemployment, with the main distinction being the usage of illicit drugs. As a result, the higher blood Pb levels in the addicted men and women might be the result of Pb drug contamination. This is because the main difference between the two groups is the addicts’ history of opium use, as well as the recent discovery of Pb-contaminated opium as one of the rising sources of exposure to this toxin in the study region, due to the likely misuse of Pb-contaminated opium. The findings of this pilot study also corroborate numerous reports pointing to Pb poisoning as a cause of nonspecific symptoms in opium addicts, such as colic abdominal pain, nausea, vomiting, weight loss, anemia, neuropathy, and so on, indicating the need to screen blood Pb levels in opium addicts to avoid more serious complications. The restricted results of this pilot study necessitate further investigation by other researchers, and this pilot study can serve as the foundation for future pertinent research.

Author Contributions

F.A.H.: Designed the study, performed the analysis, and drafted the manuscript. S.R.: Contributed to study design, and data interpretation, revised the manuscript, and provided critical comments. M.M.-J. and M.S.: Contributed to study design and data interpretation, revised the manuscript, and provided critical comments. M.L.B. and R.K.: Contributed to study design and data interpretation, revised the manuscript, and provided critical comments. S.S.: Contributed to study design and data interpretation, revised the manuscript, and provided critical comments. L.M. and K.D.: Contributed to study design and data interpretation, revised the manuscript, and provided critical comments. A.M. and P.M.: Conceptualization, writing—review and editing, and supervision. All authors have read and agreed to the published version of the manuscript.

Funding

This work was supported by the Shahreza Branch, Islamic Azad University (Grant number: 19710603952001).

Institutional Review Board Statement

The studies involving human participants were reviewed and approved by the Ethics Committee of Shahreza Branch, Islamic Azad University (Ref. no: 04-16-1401-1415). The patients/participants provided their written informed consent to participate in this study.

Informed Consent Statement

Informed consent was obtained from all subjects involved in the study.

Data Availability Statement

The original contributions presented in the study are included in the article; further inquiries can be directed to the corresponding author.

Acknowledgments

The authors thank the Shahreza Branch, Islamic Azad University, for their cooperation.

Conflicts of Interest

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

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Ijerph 19 09110 g001a 550Ijerph 19 09110 g001b 550
Figure 1. Standard curves of Pb (a), 8-oxo-Gua (b), and MDA (c).
Figure 1. Standard curves of Pb (a), 8-oxo-Gua (b), and MDA (c).
Ijerph 19 09110 g001aIjerph 19 09110 g001b
Table
Table 1. The distribution of parameters frequency.
Table 1. The distribution of parameters frequency.
VariableFrequencies (%)Std. Deviation
AddictNon-AddictAddictNon-Addict
Sex
Male 15 (60%)13 (52%)0.500.51
Female 10 (40%)12 (48%)
Age groups (years old)
20–30 7 (28%)9 (36%)0.730.81
30–40 12 (48%)9 (36%)
40–50 6 (24%)7 (28%)
Education
Illiterate 1 (4%)7 (28%)0.590.90
Non-academic (high school diploma) 11 (44%)3 (4%)
Academic (e.g., Associate’s degree, BSc., MSc., and Ph.D.) 13 (52%)15 (60%)
Job
Unemployed 3 (12%)8 (32%)0.450.69
Employee 20 (80%)13 (52%)
Retired 2 (8%)4 (16%)
History of illicit drug use
Never 0 (0%)20 (80%)1.110.52
3 years 9 (36%)4 (16%)
4 years 7 (28%)1 (4%)
5 years 5 (20%)0 (0%)
>5 years 4 (16%)0 (0%)
Drug type
Opium 11 (44%)1 (4%)1.641.57
Heroin 4 (16%)1 (4%)
Cocaine 0 (0%)0 (0%)
Marijuana 6 (24%)1 (4%)
Other 4 (16%)2 (8%)
Table
Table 2. The frequency of blood Pb, 8-oxo-Gua, and MDA levels in addict and non-addict participants.
Table 2. The frequency of blood Pb, 8-oxo-Gua, and MDA levels in addict and non-addict participants.
VariableFrequency (%)Std. Deviation
AddictNon-AddictAddictNon-Addict
Pb (µg/dL)
<2514 (28%)9 (18%)0.945161.09240
25–357 (14%)8 (16%)
35–452 (4%)4 (8%)
>452 (4%)4 (8%)
8-oxo-Gua (ng/mL)1.439911.38082
6410 (20%)9 (18%)
325 (10%)6 (12%)
164 (8%)5 (10%)
83 (6%)2 (4%)
43 (6%)3 (6%)
MDA (ng/mL)
648 (16%)9 (18%)
327 (14%)7 (14%)1.254331.26754
164 (8%)5 (10%)
85 (10%)2 (4%)
41 (2%)2 (4%)
Table
Table 3. Mean concentration of Pb, 8-oxo-Gua, and MDA in blood serum of addict and non-addict participants.
Table 3. Mean concentration of Pb, 8-oxo-Gua, and MDA in blood serum of addict and non-addict participants.
Variable IndicatorsMean Concentration (µg/dL) Std. Deviationp-Value *
df (f)
AddictNon-AddictAddictNon-Addict
PbMale22.7810.1113.794.190.001
48 (4.87)
Female21.768.8412.363.290.001
48 (4.66)
8-oxo-GuaMale22.5722.9011.5511.460.785
48 (0.88)
Female23.1123.7614.7614.660.647
48 (0.94)
MDAMale25.6425.5512.7712.750.995
48 (0.97)
Female24.8423.9813.3413.670.867
48 (0.57)
* p-value is significant at the 0.05 level.
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Hesaruiyeh, F.A.; Rajabi, S.; Motamed-Jahromi, M.; Sarhadi, M.; Bell, M.L.; Khaksefidi, R.; Sarhadi, S.; Mohammadi, L.; Dua, K.; Mohammadpour, A.; et al. A Pilot Study on the Association of Lead, 8-Hydroxyguanine, and Malondialdehyde Levels in Opium Addicts’ Blood Serum with Illicit Drug Use and Non-Addict Persons. Int. J. Environ. Res. Public Health 2022, 19, 9110. https://doi.org/10.3390/ijerph19159110

AMA Style

Hesaruiyeh FA, Rajabi S, Motamed-Jahromi M, Sarhadi M, Bell ML, Khaksefidi R, Sarhadi S, Mohammadi L, Dua K, Mohammadpour A, et al. A Pilot Study on the Association of Lead, 8-Hydroxyguanine, and Malondialdehyde Levels in Opium Addicts’ Blood Serum with Illicit Drug Use and Non-Addict Persons. International Journal of Environmental Research and Public Health. 2022; 19(15):9110. https://doi.org/10.3390/ijerph19159110

Chicago/Turabian Style

Hesaruiyeh, Farzaneh Allahdinian, Saeed Rajabi, Mohadeseh Motamed-Jahromi, Mohammad Sarhadi, Michelle L. Bell, Razieh Khaksefidi, Somayeh Sarhadi, Leili Mohammadi, Kamal Dua, Amin Mohammadpour, and et al. 2022. "A Pilot Study on the Association of Lead, 8-Hydroxyguanine, and Malondialdehyde Levels in Opium Addicts’ Blood Serum with Illicit Drug Use and Non-Addict Persons" International Journal of Environmental Research and Public Health 19, no. 15: 9110. https://doi.org/10.3390/ijerph19159110

APA Style

Hesaruiyeh, F. A., Rajabi, S., Motamed-Jahromi, M., Sarhadi, M., Bell, M. L., Khaksefidi, R., Sarhadi, S., Mohammadi, L., Dua, K., Mohammadpour, A., & Martelletti, P. (2022). A Pilot Study on the Association of Lead, 8-Hydroxyguanine, and Malondialdehyde Levels in Opium Addicts’ Blood Serum with Illicit Drug Use and Non-Addict Persons. International Journal of Environmental Research and Public Health, 19(15), 9110. https://doi.org/10.3390/ijerph19159110

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