Blood Cadmium Levels Research Articles

Association of blood heavy metal levels with osteocalcin abnormality and incidence of osteoporosis in Saudi subjects.

Serum toxic metals have been implicated in development of many diseases. This study investigated the association between blood levels of lead and cadmium with abnormal bone mineral density (BMD) and incidence of osteoporosis. Sixty Saudi male adults age matching were assigned into two groups: A healthy control group (n = 30) and osteoporosis patients diagnosed according to T-score (n = 30). Serum calcium, vitamin D, osteocalcin, lead, cadmium were measured. Osteoporotic group showed a highly significant elevation of blood lead and cadmium levels compared to the control group (p <0.001). BMD was negatively correlated with serum osteocalcin level compared with control. There was a significant negative correlation between the cadmium and lead levels (r=-0.465 and p-value = 0.01) and calcium (p < 0.004). Our findings suggested that high cadmium and lead were negative correlated to BMD and increased the risk factor for osteoporosis.

Exposure to metals and the disruption of sex hormones in 6–19 years old children: An exploration of mixture effects

BackgroundIndividual metals have been linked to sex hormones disruption, but the associations of metals mixture are rarely examined among children. MethodsA total of 1060 participants of 6–19-year-old who participated in the National Health and Nutrition Examination Survey (2013–2016) were included. Eighteen metals were quantified in the whole blood and urine. Sex hormones were measured in serum, including total testosterone (TT), estradiol (E2), and sex hormone binding globulin (SHBG). In addition, free androgen index (FAI) and the ratio of TT to E2 were calculated. Bayesian kernel machine regression and latent class analysis were performed to assess the associations of metals mixture and exposure patterns of metals at varied levels with sex hormones while adjusting for selected covariates. All analyses were conducted by sex-age and sex-puberty groups to explore the potential sex-dimorphic effects. ResultsExposure to metals mixture was associated with elevated levels of FAI and E2 among 12–19 years old girls. Moreover, the exposure pattern of metals that was characterized by high levels of blood and urinary cadmium, blood manganese, and urinary cobalt was associated with elevated E2 and reduced TT/E2 levels among girls of 12–19 years old. However, the associations of metals mixture with sex hormones were overall nonsignificant among boys. Nevertheless, metals exposure pattern that was characterized by high levels of blood lead, urinary barium, strontium, and lead but comparatively low levels of the other metals was consistently associated with reduced levels of FAI and E2 but elevated levels of TT/E2 and SHBG among boys of 12–19 years old. ConclusionMetals mixture and exposure patterns that were dominated by high levels of certain metals were associated with sex hormones imbalance among 12–19 years old children in a sex-dimorphic pattern, with the identified individual metals that drove the associations of metals mixture varied by sex.

Association of Blood Heavy Metal Exposure with Atherosclerotic Cardiovascular Disease (ASCVD) Among White Adults: Evidence from NHANES 1999-2018.

Cardiovascular diseases (CVD) are main public health concerns highly prevalent in industrialized societies where human health is threatened by a series of environmental pollutants, particularly heavy metal contaminants. We aimed to find out if blood heavy metals are associated with the 10-year risk of atherosclerotic cardiovascular disease (ASCVD) in a nationally representative sample of US adults. We analyzed the cross-sectional data on blood heavy metals of 3268 non-Hispanic white participants aged 40-79years from the National Health and Nutrition Examination Survey (NHANES) 1999-2018. We introduced a risk estimation algorithm, namely the 2013 Pooled Cohort Equations (PCE), to assess the risk for ASCVD over a 10-year period. The 10-year risk for ASCVD was categorized as either reduced risk (< 7.5% risk) or elevated risk (≥ 7.5% risk). Blood lead, cadmium, and mercury were distributed into four quartiles. We used weighted multivariate logistic regression models and restricted cubic spline (RCS) regression to detect the association of blood heavy metal exposure with 10-year ASCVD risk. Following the adjustment of covariates, the adjusted odds ratios (ORs) with 95% confidence intervals (CIs) for elevated 10-year ASCVD risk for participants from the highest quartiles were 4.50 (2.88-7.02), 2.59 (1.68-4.00), and 1.06 (0.66-1.71) for blood cadmium, lead, and mercury compared to the lowest quartiles, respectively. The RCS plot demonstrated that blood cadmium was linearly and positively associated with 10-year ASCVD risk (P for nonlinearity = 0.112). According to our findings, non-Hispanic whites aged 40-79years had a greater 10-year ASCVD risk as their blood lead and cadmium levels increased. Consequently, when establishing approaches for ASCVD prevention, blood heavy metals should be considered.

Potensi Daun Kelor (Moringa oleifera) Terhadap Kadar Kadmium Dan Kreatinin Dalam Darah Sebagai Indikator Kerusakan Fungsi Ginjal Pada Tikus Putih Yang Terpapar Asap Rokok

High exposure of cigarettes in Indonesia causes various disturbances in the body's metabolism, especially in the kidney, which is due to the cadmium metal content. Cadmium induces oxidative stress by the formation of free radicals and decrease natural antioxidant activity in the kidney organs (nephrotoxic). One way to overcome nephrotoxic by decreasing blood creatinine, we can utilize Moringa oleifera (MO) which is known as a "miracle plant" and have high contents of flavonoid groups, phenols, gallic acid, ascorbic acid and carotenoids as antioxidants and natural metal chelating agents. This research aimed to analyze the potential of Moringa leaves in decreasing cadmium and creatinine levels in the blood of white rats due to exposure of cigarette smoke (inhalation) at doses 200, 400 and 800 mg/kgwb. The type of research was an experimental study with quantitative analysis conducted in October 2021 – July 2022. The independent variable was the doses of Moringa leaves extract and the dependent variable were the blood cadmium and creatinine levels of white rats. The blood cadmium level was measured with AAS and the creatinine level was measured with Jaffe method without deproteination by photometry. The results of blood cadmium and creatinine levels in the treatment of MO extract at dose 200 mg/kgwb were 1.288875 μg/L and 0.85 mg/dL; MO extract at dose of 400 mg/kgwb were 0.811 μg/L and 0.775 mg/dL; MO extract at dose 800 mg /kgwb were 0.86275 μg/L and 0.7 mg/dL. Based on statistical analysis using Kruskal wallis, the results of the p value on cadmium levels in the blood were 0.004 &lt; 0.05 and the p value on creatinine levels was 0.003 &lt; 0.05, showed that there were significant differences in blood cadmium and creatinine levels in the treatment groups. Moringa leaf extract (Moringa oleifera) at a dose of 400 mg/kgwb had good potential in overcoming kidney damage in terms of creatinine levels due to cadmium exposure through cigarette smoke, which was equivalent to 44.3756 grams of fresh Moringa leaves that can be implemented for human as an additional antioxidant for overcoming free radicals. Keywords : Moringa oleifera, Cigarettes Smoke, Cadmium, Creatinine, Rattus norvegicus

Insights into the health status of the general population living near an electroplating industry zone: metal elevations and renal impairment.

A cross-sectional study was conducted in 2016 in Zhejiang Province, China, to evaluate the body burdens of metals and metalloids associated with renal dysfunction in populations living near electroplating industries. We recruited 236 subjects and performed physical examinations, determined the blood and urinary levels of arsenic (As), cadmium (Cd), chromium (Cr), manganese (Mn), nickel (Ni), lead (Pb), antimony (Sb), and selenium (Se) by an inductively coupled plasma mass spectrometer (ICP-MS), and measured three renal impairment biomarkers, namely nacetyl-β-D-glucosaminidase (NAG), retinol-binding protein (RBP), and β2-microglobulin (BMG). The proportion of abnormal nasal symptoms in the exposure group (10.1%) was much higher than in the control group (0; p < 0.05). The blood and urinary levels of As, Cd, and Se in the exposure group were significantly higher than those in the control group (p < 0.05). The blood levels of Mn and Pb, as well as the urinary levels of Cr and Ni, were significantly higher in the exposure group than in the control group (p < 0.05). The exposure group demonstrated higher levels of NAG, RBP, and BMG than the control group (0.51 vs. 0.14mg/g creatinine, 12.79 vs. 9.26IU/g creatinine, and 1.39 vs. 0.78mg/g creatinine, respectively; p < 0.05). Urinary BMG was positively correlated with urinary Cd levels (r = 0.223, p < 0.05), while urinary RBP was correlated with blood Cd levels (r = 0.151, p < 0.05) and urinary Cd, Cr, Ni, and Se levels (r = 0.220, 0.303, 0.162, and 0.306, respectively; p < 0.05). In conclusion, our study indicated that a population living in the vicinity of electroplating industries had high body burdens of certain metals and metalloids associated with non-negligible renal dysfunction.

Maternal Metals Exposure and Infant Weight Trajectory: The Japan Environment and Children's Study (JECS).

To our knowledge, the association of maternal exposure to metallic elements with weight trajectory pattern from the neonatal period has not been investigated. The goals of this study were to identify infant growth trajectories in weight in the first 3 y of life and to determine the associations of maternal blood levels of lead, cadmium, mercury, selenium, and manganese with growth trajectory. This longitudinal study, part of the Japan Environment and Children Study, enrolled 103,099 pregnant women at 15 Regional Centres across Japan between 2011 and 2014. Lead, cadmium, mercury, selenium, and manganese levels were measured in blood samples collected in the second (14-27 wk gestational age) or third trimester (). Growth trajectory of 99,014 children was followed until age 3 y. Raw weight values were transformed to age- and sex-specific weight standard deviation (SD) scores, and latent-class group-based trajectory models were estimated to determine weight trajectories. Associations between maternal metallic element levels and weight trajectory were examined using multinomial logistic regression models after confounder adjustment. We identified 5 trajectory patterns based on weight SD score: 4.74% of infants were classified in Group I, very small to small; 31.26% in Group II, moderately small; 21.91% in Group III, moderately small to moderately large; 28.06% in Group IV, moderately large to normal; and 14.03% in Group V, moderately large to large. On multinomial logistic regression, higher maternal lead and selenium levels tended to be associated with increased odds ratios (ORs) of poor weight SD score trajectories (Groups I and II), in comparison with Group III. Higher levels of mercury were associated with decreased ORs, whereas higher levels of manganese were associated with increased ORs of "moderately large" trajectories (Groups IV and V). Maternal lead, mercury, selenium, and manganese blood levels affect infant growth trajectory pattern in the first 3 y of life. https://doi.org/10.1289/EHP10321.

Association of blood cadmium and metabolic syndrome: a cross-sectional analysis of National Health and Nutrition Examination Survey 2017-2020.

Previous findings have reported the role of different types of heavy metals in cardiometabolic diseases. In the present research, we aim to evaluate the association between blood cadmium levels and Metabolic Syndrome (MetS) based on the large-sample NHANES data. Public availably data from NHANES 2017-2020 cycle was obtained. Participants were divided into MetS and non-MetS groups according to waist circumference (WC), triglyceride (TG), high-density lipoprotein (HDL), blood pressure (BP) and fasting plasma glucose (FPG) levels based on the National Cholesterol Education Program (NCEP) criteria. Student's t test, Mann-Whitney U test, and Chi-square test were performed for univariate analysis. Multivariate logistic analysis was performed to explore the relationship between blood cadmium and MetS and research findings were presented in forest plot. We also investigated the association of blood cadmium and MetS in subgroups stratified by age, gender and race. Population with MetS had significantly higher levels of blood [0.30 (0.18-0.54) vs. 0.24 (0.15-0.46) ug/L, p < 0.001] and urinary cadmium levels [0.29 (0.17-0.52) vs. 0.20 (0.09-0.42) ug/L, p < 0.001] compared with those without MetS. Higher blood cadmium concentrations were also observed in participants with elevated WC (0.28 vs. 023 ug/L, p < 0.001], TG (0.28 vs. 0.26 ug/L, p = 0.029), BP (0.33 vs. 0.23 ug/L, p < 0.001) and FPG (0.29 vs. 0.24 ug/L, p < 0.001) compared with those with normal metabolic parameters. Multivariate logistic regression showed that one-unit increasement of blood cadmium was associated with 1.25 times higher prevalence ratios for MetS after adjusting potential confounders (95% CI: 1.06-1.48, p = 0.0083). The associations between serum cadmium concentrations and MetS components were then evaluated, and the results showed higher blood cadmium levels were associated with higher risk for elevated TG, low HDL and elevated BP when treated as continuous variable. When treated as categorical variable, only BP was found positively associated with blood cadmium. Stratified multiple logistic regression analysis indicated that the positive association between blood cadmium and MetS remained significant in subjects less than 60years old and female subgroup. In conclusion, the cross-sectional survey suggested the positive association between blood cadmium levels and risk for MetS, prospective research need to be conducted for further evaluation of the causal relationship between blood cadmium and MetS.

Mediation effect of inflammatory biomarkers on the association between blood lead levels and blood pressure changes in Chinese adults

Objective: To investigate the role of inflammatory biomarkers in the relationship between blood lead levels and blood pressure changes. Methods: A total of 9 910 people aged 18-79 years who participated in the China National Human Biomonitoring in 2017-2018 were included in this study. A self-made questionnaire was used to collect demographic characteristics, lifestyle and other information, and the data including height, weight and blood pressure were determined through physical examination. Blood and urinary samples were collected for the detection of blood lead and cadmium levels, urinary arsenic levels, white blood cells, neutrophils, lymphocytes, and hypersensitive C-reactive protein (hs-CRP). Weighted linear regression models were used to evaluate the associations between blood lead, inflammatory biomarkers and blood pressure. Mediation analysis was performed to investigate the role of inflammation in the relationship between blood lead levels and blood pressure changes. Results: The median (Q1, Q3) age of all participants was 45.4 (33.8, 58.4)years, including 4 984 males accounting for 50.3%. Multivariate logistic regression model analysis showed that after adjusting for age, gender, residence area, BMI, education level, smoking and drinking status, family history of hypertension, consumption frequency of rice, vegetables, and red meat, fasting blood glucose, total cholesterol, triglycerides, blood cadmium and urinary arsenic levels, there was a positive association between blood lead levels, inflammatory biomarkers and blood pressure (P<0.05). Each 2.71 μg/L (log-transformed) increase of the lead was associated with a 2.05 (95%CI: 0.58, 3.53) mmHg elevation in systolic blood pressure (SBP), 2.24 (95%CI: 1.34, 3.14) mmHg elevation in diastolic blood pressure (DBP), 0.25 (95%CI: 0.05, 0.46) mg/L elevation in hs-CRP, 0.16 (95%CI: 0.03, 0.29)×109/L elevation in white blood cells, and 0.11 (95%CI: 0.02, 0.21)×109/L elevation in lymphocytes, respectively. Mediation analysis showed that the levels of hs-CRP significantly mediated the association of blood lead with SBP, with a proportion about 3.88% (95%CI: 0.45%, 7.32%). The analysis also found that the levels of hs-CRP and neutrophils significantly mediated the association of blood lead with SBP, with a proportion about 4.10% (95%CI: 1.11%, 7.10%) and 2.42% (95%CI: 0.07%, 4.76%), respectively. Conclusion: This study suggests that inflammatory biomarkers could significantly mediate the association of blood lead levels and blood pressure changes.

Exposure to lead and cadmium is associated with fasting plasma glucose and type 2 diabetes in Chinese adults.

Exposure to lead and cadmium has been associated with type 2 diabetes, but the results are largely inconsistent, and little is known about their joint effect. We aimed to investigate the associations of lead and cadmium co-exposure with fasting plasma glucose (FPG) and type 2 diabetes. The study included 5732 participants aged ≥18years from 16 communities in East China. Blood levels of lead and cadmium were determined using graphite furnace atomic absorption spectrometry. Multivariable linear and logistic regression models were performed to evaluate the associations of lead and cadmium alone or in combination with FPG and diabetes. The median (interquartile range) values of blood lead and cadmium were 40.0 (26.8-57.9) and 1.70 (0.56-3.60)μg/L, respectively. After adjustment for potential confounders, blood lead levels were positively associated with FPG (difference comparing extreme lead quartiles=0.11 [95% CI: 0.03, 0.20]mmol/L) and prevalent diabetes (odds ratio [OR]=1.35 [95% CI: 1.03, 1.78]). The association between lead and diabetes was observed among participants with high cadmium, but not among those with low cadmium (P for interaction=0.03). In the joint analysis, compared with participants with low levels of blood lead and cadmium, participants with high levels of two metals had a 0.16 (95% CI: 0.07, 0.25) mmol/L increase in FPG and a 51% (OR=1.51, 95% CI: 1.15, 1.99) increase in odds of diabetes. Our findings suggest that lead and cadmium co-exposure is significantly associated with elevated FPG and type 2 diabetes in the general population.

Parathyroid hormones in relation to serum cadmium and lead: the NHANES 2003-2006.

The toxic effects of cadmium and lead exposure on parathyroid function have been investigated extensively while the results were conflicting. We aimed to investigate the association of blood cadmium and lead with serum parathyroid hormone (PTH) based on the general population. We analyzed a sample of 9400 adults aged 18years or older from the US National Health and Nutrition Examination Survey 2003-2004 to 2005-2006. We estimated the association using multivariable linear regression analysis by taking cadmium and lead as a continuous or quartile variable. Restricted cubic splines were utilized to explore the non-linear relationship between cadmium or lead and PTH. The median blood cadmium and lead levels were 0.34µg/L and 1.43µg/dL, respectively. Cadmium was significantly associated with PTH when taken as a continuous variable [Odds ratio (OR): 0.97; 95% confidence interval (95% CI): 0.95-0.99] or a quartile variable (fourth vs first quartile, OR: 0.94; 95% CI: 0.91-0.97). Lead was significantly associated with PTH when taken as a continuous variable (OR: 1.04; 95% CI: 1.02-1.07) or a quartile variable (fourth vs first quartile, OR: 1.06; 95% CI: 1.01-1.10). P values for non-linearity were all less than 0.05. The association between cadmium and PTH was not significant in females. Cadmium was negatively associated with PTH, and lead was positively associated with PTH both in a non-linear manner among the general population. However, there was a gender difference in the relationship between cadmium and PTH.

Maternal cadmium exposure impairs placental angiogenesis in preeclampsia through disturbing thyroid hormone receptor signaling.

Cadmium is a ubiquitous environmental pollutant, which can increase the risk of preeclampsia. This study was designed to determine the mechanism of cadmium exposure during pregnancy impaired placental angiogenesis that was associated with the occurrence of preeclampsia. The effects of cadmium exposure on placental thyroid hormone receptor signaling were explored. JEG3 cells were treated with CdCl2 (20μM) and the Dio2 inhibitor, IOP (100μM). Cadmium levels in maternal blood and placentae were increased in preeclampsia group. Placental angiogenesis of preeclampsia was decreased with decreased expression of PLGF and VEGF and increased expression of sFlt1. Meanwhile, the expression and nuclear translocation of thyroid hormone receptor α were decreased in preeclampsia placenta, as well as the expression of Dio2, but not the expression and nuclear translocation of thyroid hormone receptor β. Furthermore, we found that cadmium exposure downregulated the expression of thyroid hormone receptor α and Dio2, but not the expression of thyroid hormone receptor β in JEG3 cells. Also, we found that cadmium exposure decreased the expression of PLGF and VEGF and increased the expression of sFlt1 in JEG3 cells. IOP pretreatment decreased the expression of PLGF and increased the expression of sFlt1. In conclusion, our results elucidated that cadmium exposure would impair placental angiogenesis in preeclampsia through disturbing thyroid hormone receptor signaling.

Association between the concentrations of some toxic metals and the risk of uterine fibroids among Nigerian women

Background: Uterine fibroids are a major health challenge to some women in the world, especially women of African descendants. The etiology of uterine fibroids and the mechanisms of their growth are not fully understood, and those factors that make women to be susceptible to fibroid development are subjects of investigation. Environmental toxicants such as toxic metals exposure have been implicated, but the results have not been consistent. This study seeks to determine the association between blood cadmium (Cd), arsenic (As), and lead (Pb) levels and the risk of uterine fibroids among women of reproductive age. Materials and Methods: This case–control study comprised 100 women of reproductive age (age range, 20–50 years) with uterine fibroid and 50 age-matched women without uterine fibroids. Fibroids were diagnosed using abdominal scan by attending physicians. Furthermore, the control subjects were screened for fibroids using abnormal scan. Blood Cd, As, and Pb were determined using an atomic absorption spectrophotometer, and the risk of association was calculated. Results: The mean blood Cd, As, and Pb were significantly higher (P &lt; 0.001) among women with fibroid than those without fibroid (controls). The odds ratio for Cd 2.62 (confidence interval [CI]: 0.02–0.05), As 1.02 (CI: 0.02–0.030), and Pb 1.42 (CI: 0.04–0.129) was greater among women with uterine fibroids than controls. Conclusions: Exposure to cadmium and lead might be a risk factor for developing uterine fibroids among Nigerian women.

Genetically predicted tobacco consumption and risk of intracranial aneurysm: a Mendelian randomization study.

Several observational studies have suggested that tobacco consumption is a risk factor for intracranial aneurysms (IAs). We here genetically predict the causal association between specific smoking features and biomarkers for smokers and IA risk. The Mendelian randomization (MR) analysis considered summary statistics from the largest current genome-wide association studies of smoking and IA. The inverse-variance weighted (IVW) method, weighted median method, MR-RAPS, and multiple variants Mendelian randomization (MVMR) were performed to estimate the effect of different smoking features and drinking in IA. We observed significant causal effects of smoking on the risk of both aneurysmal subarachnoid hemorrhage (aSAH) and unruptured IA (uIA). The ORs of IAs based on the IVW method were 1.890 (95% CI 1.486-2.405) of ever smoking regularly. MVMR analysis afforded odds ratios of 1.685 (95% CI 1.136-2.501). In the further subgroup analysis, a similar causal relationship was observed in aSAH. Moreover, our analyses suggested that higher blood cotinine level and cadmium increases aSAH risk, and ORs were 1.235 (95%CI 1.009-1.186) and 1.235 (95%CI 1.046-1.458), respectively. Our study suggests that ever smoking regularly is associated with the IA risk, which includes both uIA and aSAH. Besides, higher blood cadmium and cotinine level may increases IA and aSAH risk. Thus, tobacco control should be promoted as primordial prevention for IAs, and screening for patients with a smoking history is emphasized.

Associations of blood cadmium, lead, and mercury levels with age of menarche, menopause, and reproductive lifespan of Korean women: KNHANES 2008-2017

Associations of blood cadmium, lead, and mercury levels with age of menarche, menopause, and reproductive lifespan of Korean women: KNHANES 2008-2017

THE THE EFFECTIVENESS OF Moringa oleifera LEAF EXTRACT ON HEPATOTOXIC CASE REVIEWING FROM CADMIUM, SGOT AND SGPT BLOOD LEVELS IN WHITE RATS (Rattus norvegicus) INDUCED WITH CADMIUM (Cd)

Moringa leaf (Moringa oleifera Lamk.) is part of herbal plants that have been known for their good natural chelating agent and hepatoprotective properties, especially in hepatotoxic events due to cadmium (Cd) exposure, where flavonoid compounds are contained in the form of quercetin and kaempferol, vitamin A, vitamin C and several phenol components that can inhibit the accumulation of cadmium metals and neutralize free radicals by lowering SGOT and SGPT levels, so this study aimed to determine the effectiveness of moringa leaf extract (Moringa oleifera Lamk.) against hepatotoxic in white rats (Rattus norvegicus) induced with cadmium. This study was expected to provide potential of Moringa leaves in hepatotoxic case at dose 400 mg/kgwb, 500 mg/kgwb and 600 mg/kgwb in white rats. This research was an experimental study with quantitative analysis conducted at the Faculty of Veterinary Medicine, Airlangga University, Surabaya Health Laboratory Center, and Bakti Analisa Laboratory in November 2021 – July 2022. The independent variable was the dose of Moringa leaf extract and the dependent variables were levels of cadmium, SGOT and SGPT in white rat blood. Analysis of blood cadmium levels using an atomic absorption spectrophotometer and analysis of SGOT SGPT levels using the BS-200 Chemistry Analyzer. The results showed that the average blood cadmium, SGOT and SGPT levels in treatment group 1 were 0.0605 μg/dL, 260.175 U/L, and 143.85 U/L; in treatment group 2 were 0.075 μg/dL, 250.925 U/L and 77.575 U/L; in treatment group 3 were 0.08125 μg/dL, 171.475 U/L and 66.075 U/L. Based on statistical analysis of One-way Anova test, sig. p value &gt; 0.05, there was no significant difference in cadmium and SGOT levels. Then, the results of the Kruskal wallis test on SGPT levels showed sig. p value &gt; 0.05, there was no significant difference in all treatments. Moringa leaf extract at a dose of 600 mg/kgbw/day had the best effect as chelating agent and hepatoprotective compared to doses of 400 mg/kgbw/day and 500 mg/kgbw/day at cadmium induction for 10 days. From this study, we recommend to consume about 66,522 g/day Moringa fresh leaves as the natural chelating agent and hepatoprotector for overcoming acute hepatotoxic case.&#x0D; &#x0D; INDEX TERMS Moringa Leaves, Cadmium, SGOT, SGPT, Rattus norvegicus, Atomic Absorption Spectrophotometer, Chemistry Analyzer

Antioxidant and chelating effects of Citrus sinensis peel extract on wistar rats administered with lead and cadmium

Heavy metals possess toxic effects that leads to serious health and environmental problems, anthropogenic activities are chiefly responsible for metal exposure, and they manifest toxic effects on a biological cell. The peels of Citrus sinensis have been reported to have medicinal effect. However, these benefits have not been adequately investigated against metals toxicity. This study evaluated the antioxidant and chelating effect of Citrus sinensis peel extract (CSPE) on wistar rats administered with lead and cadmium. Forty-five (45) rats were separated into nine (9) groups of 5 rats each. The group under control was given distilled water daily, group 2 and 3 received 8mg/kg of cadmium and 15 mg/kg of lead per body weight respectively. Animals in group 4 received 8 mg/kg of cadmium and 100 mg/kg of EDTA treatment per body weight. Group 5 were given 15 mg/kg of lead and treated with 100 mg/kg of EDTA. Group 6 and 7 were respectively treated with CSPE of 250 and 500 mg/kg and administered cadmium-8 mg/kg. Lastly, group 8 and 9 received lead and 250 and 500 mg/kg of CSPE respectively. Administration lasted for 28 days afterwards the rats were sacrificed. The whole blood was separated for analysis of haematological parameters and the liver and kidney tissues harvested for metal analysis. Glutathione Peroxidase (GPx), Malondialdehyde (MDA), Superoxide dismutase (SOD) and Catalase (CAT) were also estimated. Results showed a statistically significant increase (p&lt;0.05) of MDA levels in lead and cadmium and a significant reduction in SOD, CAT and GPx values compared to the control and treated group. The level of cadmium and lead in blood, kidney, and liver tissues of 500 mg/kg CSPE were significantly reduced. CSPE possesses antioxidant properties and exhibits chelating effects on wistar rats administered with lead and cadmium.

The Effectiveness Of Moringa Leaf Extract (Moringa oleifera) on Cadmium and LDL Cholesterol Levels in Blood as Indicators of Atherosclerosis in Cadmium (Cd) Induced White Rats (Rattus norvegicus)

Moringa leaves (Moringa oleifera) have chelating agent properties that act as natural antioxidants in binding heavy metals and free radical scavengers, with cadmium being one of the heavy metals free radicals having toxic effects on the body. Exposure to cadmium can reduce the activity of lipoprotein lipase enzymes (LPL) which function in the triglycerides and free fatty acids catabolism process, and can increase cholesterol and triglyceride levels in the blood. This study aims to determine the effectiveness of Moringa (Moringa oleifera) on Cadmium chloride-induced white rats (Rattus norvegicus) using an experimental research design with a quantitative analysis technique. This study uses the level of cadmium and LDL cholesterol for the dependent variable and the dose of Moringa leaf extract (Moringa oleifera) for its independent variable. The samples used are white rats (Rattus norvegicus) aged 8-12 weeks with a weight of 150-200 grams, along with blood drawn from the heart for the specimen. The researcher conducted the study at the Faculty of Veterinary Medicine, Airlangga University; Surabaya Health Laboratory Center; and Surabaya Bakti Analysis Laboratory from October 2021 to June 2022 using Atomic Absorption Spectrophotometry (AAS) and Chemical Analyzer BS-200. The results show that the average value of cadmium and LDL cholesterol levels in white rats in treatment group 1 are 0.605 g/dL and 8.25 mg/dL, group 2 are 0.075 g/dL &amp; 18.5 mg/dL; and group 3 are 0.08125 g/dL and 12 mg/dL. Based on the statistical analysis of the One-Way ANOVA test, the sig. p-value is &gt; 0.05. Thus, the average value of cadmium and LDL cholesterol has no significant difference. Compared to the 400 mg/kgBW and 500 mg/kgBW, the 600 mg/kgBW dose has the best effectiveness in reducing LDL cholesterol in white rats (Rattus norvegicus) after being induced with cadmium chloride. This study recommends consuming fresh Moringa leaves (Moringa oleifera) as much as 66.522 grams per human/day as an additional antioxidant and chelating agent.

Plasma microRNA expression and immunoregulatory cytokines in an Indian population occupationally exposed to cadmium.

Following its accumulation in the body, cadmium (Cd) exposure is associated with devastating effects on multiple organ system of the human body. The immune system is one of the sensitive targets for Cd-inducedtoxicity. Recently, studies have demonstrated a significant role of Cd in inducing epigenetic alterations. With this background, the present study was planned to study the changes in candidate microRNA(miRNA) expression associated with immune regulation in occupationally Cd-exposedworkers. One hundred individuals involved in welding and metal handicraft manufacturing, while 80 apparently healthy subjects without any prior history of occupational exposure were recruited for the study. Blood Cd level was determined by atomic absorption spectrometry. Serum cytokine levels were measured using anenzyme-linked immunosorbent assay and serum miRNA expression of candidate miRNAs (miR-146a, miR-210, and miR-222) were determined by real-time polymerase chain reaction.The median Cd level (2.40 μg/L) in the occupationally exposed workers was significantly higher than the nonexposed subjects (0.90 μg/L). Among the cytokines, interleukin-4 (IL-4), and tumor necrosis factor-alpha (TNF-α)were significantly higher whileIL-2 and IL-10 were significantly lower in the exposed. The expression level of miR-146a and miR-222 were significantly different between the groups with the former showing downregulation and later showing upregulation. Correlation analysis revealed a positive and negative association of miR-222 and miR-146a with blood cadmium level, IL-17 as well as TNF-α, respectively. Furthermore, the in-silico analysis revealed a significant role of the studied miRNAs in various cellular and genetic pathways. The findings of the present study demonstrate significant involvement of Cd-inducedalteration in miRNAs in varied immune regulatory changes in exposed individuals.

Association between levels of blood trace minerals and periodontitis among United States adults.

AimEvidence linking trace minerals and periodontitis is limited. To investigate the relationship between trace minerals (selenium, manganese, lead, cadmium, and mercury) and periodontitis, data from the National Health and Nutrition Examination Survey (NHANES) were analyzed after accounting for potential confounding factors. No known studies have explored the relationship between these five trace minerals and periodontitis.Materials and methodsA total of 4,964 participants who had undergone a full-mouth periodontal examination and laboratory tests for five trace minerals were studied in a cross-sectional study. Clinical attachment loss (CAL) and periodontitis grading were used to measure periodontitis severity. Linear and logistic regression models were used to evaluate the association between trace minerals and periodontitis. Further subgroup analyses were performed.ResultsBlood lead and cadmium levels were positively associated with mean CAL, and blood selenium was negatively associated with mean CAL; however, blood mercury, blood manganese, and mean CAL were not significantly associated. The association between trace minerals and mean CAL was more significant in males, the elderly, and patients with diabetes. There was a threshold effect between blood cadmium levels and mean CAL. Among the Black population, the relationship between blood cadmium levels and mean CAL followed an inverted U-shaped curve. There was a saturation effect in the study of blood lead in people aged 45–59 years old.ConclusionOur study highlighted that blood selenium, lead, and cadmium levels were significantly associated with periodontitis in a nationally representative sample of United States adults.

Signs of Phenotypic Changes in Children Constantly Exposed to Elevated Environmental Levels of Chemical Pollutants in the City of Nizhny Tagil

Background: Environmental epigenetics plays an important role in developing a phenotype of diseases. Objective: To identify signs of phenotypic changes in children constantly exposed to high environmental levels of chemical pollutants in the city of Nizhny Tagil. Materials and methods: The study was conducted in a specialized kindergarten for children suffering from different allergic diseases in the city of Nizhny Tagil. To detect phenotypic signs of environmental exposure, we used data on clinical diagnoses, medical history, and pediatric physical examination, as well as the results of a parent survey on allergies. We then measured blood and urinary levels of some metals and total IgE as a marker of lead poisoning in children. Results: According to clinical diagnoses, food intolerance was noted in 97.7 % of the children, 91.2 % suffered from allergic dermatitis, and almost 20 % were allergic to house dust. Phenotypic manifestations of food intolerance testified to the predominance of its skin phenotype. Every third child had symptoms of psychological disorders. The questionnaire-based survey revealed a positive allergic status in 83.1 % of the parents, mainly with skin manifestations. High blood levels of lead, nickel, cobalt, and cadmium exceeding the safe level by 23.6–240 % were observed in the study population. The syndrome of chronic xenogeneic intoxication was established in 57.3 % of cases and the syndrome of sensitization to low doses of chemicals – in 41.6 % of them. Almost 25 % of the children were underweight, which was associated with their blood cadmium levels. Conclusions: Our findings confirm the few literature data on such health effects of heavy metals in children as asthma, eczema and food allergies, as well as low body weight and height. Studies of the signs of phenotypic changes in the group of children suffering from allergies and exposed to environmental hazards are most likely to indicate the adverse impact of heavy metals on the immune system, manifestations of epigenetic mechanisms forming the allergy phenotype, which can potentially lead to transgenerational inheritance.