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Copyright of Journal of Faculty of Pharmacy of Ankara University / Ankara Üniversitesi Eczacilik Fakültesi Dergisi is the property of Ankara University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Cadmium (Cd), a heavy metal that naturally exists in soil, is dangerous for plants, animals, and humans to be in contact with. The primary causes of Cd contamination in soil include manure, sewage sludge, aerial deposition, and excessive use of phosphate fertilizers. Cd toxicity significantly reduced the crop productivity and physio-biochemical attributes. Present research aim was to investigate the effect of glucose in Solanum lycopersicum under Cd stress. Seeds of S. lycopersicum soaked in 50 mM of glucose for 5hrs followed by sown in the maintain pots. Cd stress (0.8 mM) was applied directly through the soil at the stage of 15 days. Results of this study demonstrated that Cd stress reduced the length (shoot and root by 41 and 70%), weight (fresh [32 & 66%] and dry [28 & 29%]), SPAD value, photosynthesis and related characteristics, carbonic anhydrase (CA) and nitrate reductase (NR). Beside this, malondialdehyde (MDA) and hydrogen peroxide (H2O2) content increased in the presence of Cd in S. lycopersicum plants. However, pre-treatment of glucose partially or fully counteracted the toxicity triggered by Cd in the aforesaid parameters. Moreover, antioxidant enzymes activity and proline content are further increased in the plants which previously received glucose through seeds. Our study reveals the beneficial effects of glucose for improved growth and will support new avenue on overcoming Cd toxicity and improving agricultural productivity. [ABSTRACT FROM AUTHOR]

Ration contamination with cadmium chloride (CdCl2) leads to serious economic loss. The current study aimed to explain the ameliorative effect of grape seed extract (GSE) either alone or in combination with CdCl2. One hundred and fifty chicks were used in the current study. They were equally alienated into 6 groups; group I was kept as control. Group II: given grape seed extract by the first dose (GSE1) of 250 mg/kg; group III: given grape seed extract by the second dose (GSE2) of 500 mg/kg; group IV: given cadmium chloride (CdCl2) to evaluate the undesirable effects of the dose (100 mg/kg diet). Group V: given combination of GSE1+ CdCl2, group VI: given combination of GSE2+ CdCl2. At the end of the 3rd and 5th weeks, the following parameters were measured: Serum oxidants and antioxidants (GSH, SOD, CAT and MDA), brain oxidants and antioxidants (SOD, CAT, MDA, and NO), semi-quantitative RT-PCR detection of brain and liver GST and GPx, as well as serum cytokines (IL-1ß, IL-10, and TNF-a), were determined. The results put on display show that GSE extract considerably ameliorated the levels of serum and tissue oxidants and antioxidants, as well as cytokines that ramshackle CdCl2. Histopathological assessment of brain tissue and BAX brain sections was in concurrence with the immunological, oxidant, antioxidant, and RT-PCR results. It is important to take into consideration that the immunostimulant, antioxidative properties of GSE are mechanistically achieved. So, GSE could be used as a protective agent against ration contamination. [ABSTRACT FROM AUTHOR]

In this work, two kinds of primary batteries, both of which included a Zn anode, C rod cathode, copper wire and electrolyte composed of Cd2+ -contaminated water or soil, were constructed in the first attempt to both remove Cd2+ and generate electricity. Unlike traditional technologies such as electrokinetic remediation with high energy consumption, this technology could realize Cd2+ migration to aggregation and solidification and generate energy at the same time through simultaneous galvanic reactions. The passive surface of Zn and C was proven via electrochemical measurements to be porous to maintain the relatively active galvanic reactions for continuous Cd2+ precipitation. Cd2+ RE (removal efficiency) and electricity generation were investigated under different conditions, based on which two empirical models were established to predict them successfully. In soil, KCl was added to desorb Cd2+ from soil colloids to promote Cd2+ removal. These systems were also proven to remove Cd2+ efficiently when their effects on plants, zebrafish, and the soil bacterial community were tested. LEDs could be lit for days by utilizing the electricity produced herein. This work provides a novel, green, and low-cost route to remediate Cd2+ contamination and generate electricity simultaneously, which is of extensive practical significance in the environmental and energy fields. [ABSTRACT FROM AUTHOR]

Humans are continuously exposed to various heavy metals including copper, iron, cadmium, and arsenic, which were specifically selected for the current analysis because they are among the most frequently encountered environmental mankind and industrial pollutants potentially causing human health hazards and liver injury. So far, these issues were poorly assessed and remained a matter of debate, also due to inconsistent results. The aim of the actual report is to thoroughly analyze the positive as well as negative effects of these four heavy metals on human health. Copper and iron are correctly viewed as pollutant elements essential for maintaining human health because they are part of important enzymes and metabolic pathways. Healthy individuals are prepared through various genetically based mechanisms to maintain cellular copper and iron homeostasis, thereby circumventing or reducing hazardous liver and organ injury due to excessive amounts of these metals continuously entering the human body. In a few humans with gene aberration, however, liver and organ injury may develop because excessively accumulated copper can lead to Wilson disease and substantial iron deposition to hemochromatosis. At the molecular level, toxicities of some heavy metals are traced back to the Haber Weiss and Fenton reactions involving reactive oxygen species formed in the course of oxidative stress. On the other hand, cellular homeostasis for cadmium and arsenic cannot be provided, causing their life-long excessive deposition in the liver and other organs. Consequently, cadmium and arsenic represent health hazards leading to higher disability-adjusted life years and increased mortality rates due to cancer and non-cancer diseases. For unknown reasons, however, liver injury in humans exposed to cadmium and arsenic is rarely observed. In sum, copper and iron are good for the human health of most individuals except for those with Wilson disease or hemochromatosis at risk of liver injury through radical formation, while cadmium and arsenic lack any beneficial effects but rather are potentially hazardous to human health with a focus on increased disability potential and risk for cancer. Primary efforts should focus on reducing the industrial emission of hazardous heavy metals. [ABSTRACT FROM AUTHOR]

Cadmium is a known contributing factor for cardiovascular diseases, such as atherosclerosis and hypertension. Although zinc protects against cadmium cytotoxicity in vascular endothelial cells, the detailed mechanisms, especially the differences in the roles of a metal transporter Zrt- and Irt-like protein 8 (ZIP8) and metallothionein (MT), remain unclear. ZIP8 is involved in the uptake of cadmium, whereas MT is induced by and sequesters it. Zinc protects bovine aortic endothelial cells from cadmium cytotoxicity in a culture system in a concentration-dependent manner. Zinc significantly decreased intracellular cadmium accumulation. Cadmium elevated the expression of ZIP8 mRNA, and zinc significantly suppressed this increase in a concentration-dependent manner. However, the expression of MT was not induced by zinc alone but by cadmium; the induction of MT by cadmium was suppressed by zinc at lower concentrations, but intensified by zinc at higher concentrations. However, even when MT induction was strongly suppressed by siRNA-mediated knockdown, cadmium cytotoxicity was reduced by zinc at both lower and higher concentrations. In the absence of zinc, cadmium cytotoxicity was increased by metal response element-binding transcription factor-1 (MTF-1) siRNA-mediated knockdown of MT-1/2. Consequently, it has been suggested that zinc protects the vascular endothelial cells through a concentration-dependent mechanism. Specifically, the decrease in ZIP8 expression is crucially important for the protective effect of zinc at low concentrations against cadmium cytotoxicity in vascular endothelial cells, whereas both the decrease in ZIP8 and the induction of MT contribute to the protection by zinc at high concentrations. [ABSTRACT FROM AUTHOR]

Ganoderma triterpenes and spore powder have shown promising results in mitigating cadmium-induced renal and hepatic injuries. Ganoderma lucidum active peptide GLP4 is a natural protein with dual antioxidant activities derived from the mycelium of Ganoderma lucidum. However, its efficacy in alleviating cadmium-induced lung injury remains unexplored. This study aims to investigate the protective effects of GLP4 against cadmium-induced lung injury in mice. Mice were exposed to cadmium chloride via nebulization to induce lung injury. The protective effect of GLP4 was assessed by measuring the total cell count in BALF, levels of inflammatory cytokines, and the expression of NLRP3 in lung tissues a through histopathological examination of lung tissue changes. The results showed that GLP4 significantly mitigated histopathological damage in lung tissues, decreased the secretion of inflammatory cytokines, and reduced the expression of NLRP3, which was elevated in cadmium-exposed mice. In vitro studies further revealed that GLP4 inhibited the cadmium-induced activation of the NLRP3 inflammasome. Notably, acute cadmium exposure by the respiratory tract did not affect the liver and kidneys of the mice. The findings suggest that GLP4 reduces cadmium-induced lung injury in mice by inhibiting the activation of the NLRP3 inflammasome, which provides a theoretical foundation for using Ganoderma lucidum as a preventive and therapeutic agent against cadmium poisoning. [ABSTRACT FROM AUTHOR]

Copyright of Kirkuk Journal of Science is the property of Republic of Iraq Ministry of Higher Education & Scientific Research (MOHESR) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Extraction and mineral processing, as well as the waste generated by old abandoned mining sites, are the main sources of contamination of water bodies and lands by potentially toxic elements (PTEs). The common carp (Cyprinus carpio Linnaeus 1758) has been reported to be a good ecological indicator of environmental pollution in water bodies. Hence, we evaluated the concentration of eleven PTEs (As, Cd, Co, Cr, Cu, Fe, Hg, Mn, Ni, Pb, and Zn) in different tissues of common carp in two reservoirs of the province of Jaén, southern Spain: El Tranco de Beas (S1) and La Fernandina (S2). We also assessed the concentration of PTEs in water and sediment samples. We used inductively coupled plasma mass spectrometry for all the collected samples. We found high concentrations of As and Fe in water in the S2 reservoir, above the maximum limits allowed by the sanitary criteria in Spain; however, the analysis of sediments indicated low ecological risk in S1 and moderate ecological risk for As in S2. The concentration of PTEs in common carp was higher in the S2 reservoir, exceeding the permissible limits in the case of As, Cd, Pb, and Zn. As and Cd showed higher concentrations in the kidney; Cu, Fe, and Zn showed higher concentrations in the liver; and Pb and Mn presented higher concentrations in the gill and gill bone. There was a good correlation between the concentrations found in water/sediment samples and those in common carp, corroborating its usefulness as a good ecological indicator, allowing the detection of environmental pollution and inferring previous or current anthropogenic activities such as mining. [ABSTRACT FROM AUTHOR]

Although many studies have found that cadmium (Cd) can be toxic to microalgae, only a few reports focused on the role of extracellular polymeric substances (EPS) in Cd(II) detoxification. The biochemical and physiological endpoints of Microcystis aeruginosa, including the composition and functional groups of soluble EPS (SL-EPS), loosely bound EPS (LB-EPS), and tightly bound EPS (TB-EPS), were detected to elucidate the toxicity and detoxification mechanisms of Cd(II) for cyanobacteria. Toxicological and physiological assays on M. aeruginosa showed that the 0.25-mg/L Cd(II) resulted in a larger inhibition on growth and Fv/Fm. Nevertheless, Cd(II) significantly induced much higher contents of superoxide dismutase (SOD), intracellular microcystin LR (MC-LR), extracellular MC-LR, and EPS. Scanning electron microscopy with energy dispersive X-ray spectroscopy confirmed that Cd(II) was absorbed into the EPS layer. Fourier transform infrared spectrum analysis revealed that the functional groups bound with Cd(II) of algae biomass, SL-EPS, LB-EPS, and TB-EPS were somewhat different. The C=O/C=N groups of δ-lactam or protein were their prominent functional groups, suggesting that amide or proteins in the EPS played a key role in the adsorption in Cd(II). The concentration of 0.25 mg/L of Cd(II) may change the chemical structure of EPS by altering the production of protein-like substances containing tryptophan. This study indicated that M. aeruginosa could detoxify Cd(II) stress via induction of antioxidant capacity (higher SOD activity and MC synthesis), EPS production, and modification in chemical structure of EPS. [ABSTRACT FROM AUTHOR]

Furan (FU) is a common food contaminant and environmental pollutant. While cadmium (Cd) is a prevalent environmental contaminant that poses a risk to the health of humans and animals. The goal of the current study was to assess the combined effects of FU and Cd on the kidney of male albino rats. Five groups of rats were designed: Cr-water, Cr-oil, FU (16 mg/kg b.w), Cd (2 mg/kg b.w), and FU+Cd, rats were co-treated with both FU and Cd. All treatments were given orally for 30 days. Renal function testing revealed severe biochemical changes in the rats, indicating substantial tissue injury. In addition, there was a notable rise in malondialdehyde (MDA) levels and a fall in reduced glutathione (GSH) concentration as well as the activity of superoxide dismutase (SOD) and catalase (CAT). Also, prominent histopathological alterations in renal tissues were noticed. Additionally, FU and/or Cd significantly up-regulated the expression profile of Kim-1, and inflammatory markers (TNF-α and iNOS). Meanwhile, Aqp1, and Aqp2 m-RNA genes expression were significantly downregulated along with significant upregulation of apoptotic proteins (PCNA). Intriguingly, the concurrent FU and Cd intoxication elicited additional extensive renal injury than their individual exposure. [ABSTRACT FROM AUTHOR]

Cadmium (Cd) is a highly toxic metal that frequently contaminates our environment. In this study, the bioflocculant-producing, cadmium-resistant Escherichia fergusonii ZSF-15 was characterized from Paharang drain, Bawa Chak, Faisalabad, Pakistan. The Cd-resistant E. fergusonii was used to determine the bioflocculant production using yeast-peptone-glycerol medium (pH 6.5) supplemented with 50 mg L−1 of Cd. The culture was incubated for 3 days at 37 °C in a rotary shaker at 120 rpm. The fermentation broth was centrifuged at 4000 g for 10 min after the incubation period. The maximum flocculating activity by isolate ZSF-15 was found to be 71.4% after 48 h of incubation. According to the Fourier transform infrared spectroscopy analysis, the bioflocculant produced by strain ZSF-15 was comprised of typical polysaccharide and protein, i.e. hydroxyl, carboxyl, and amino groups. The strain ZSF-15 exhibited bioflocculant activity at range of pH (6–8) and temperature (35–50℃). Maximum flocculation activity (i.e. 71%) was observed at 47℃, whereas 63% flocculation production was observed at pH 8. In the present study, antioxidant enzyme profile of ZSF-15 was also evaluated under cadmium stress. A significant increase in antioxidant enzymes including superoxide dismutase (118%) and ascorbate peroxidase (28%) was observed, whereas contents of catalase (86%), glutathione transferase (13%), and peroxidase (8%) were decreased as compared to control. [ABSTRACT FROM AUTHOR]

Cadmium poisoning is a chronic accumulation process, and long-term drinking of even low cadmium content water will cause kidney damage, so an ultra-low detection limit is particularly important. However, at the present stage, the traditional detection method cannot reach a sufficiently low detection limit, the response time is too long, and the cost of detection is very high, so that real-time measurement cannot be realized. Therefore, the traditional cadmium ion detection method has a slow response and an insufficient detection limit. This paper presents a fiber optic cadmium ion sensor functionalized based on an Fe3O4@SiO2@CS magnetic ion imprinting polymer (M-IIP). The sensor is based on the coupling characteristics of the optical microfiber coupler (OMC) cone region to achieve a highly sensitive response to the change in the cadmium ion concentration. M-IIP materials were prepared by surface imprinting polymerization to achieve low cross-sensitivity and thus improve the detection limit of the sensor. The results show that the developed fiber sensor has high specificity and a rapid response to cadmium ions. The experimental limit of detection (LOD) reached 0.051 nM within 0–1 μM with a response time of less than 50 s. Moreover, the proposed fiber cadmium ion sensor exhibits excellent performance in terms of sensitivity, stability, repeatability and biocompatibility. [ABSTRACT FROM AUTHOR]

Background: Heavy metal pollution has become a global problem, which urgently needed to be solved owing to its severe threat to water ecosystems and human health. Thus, the exploration and development of a simple, costeffective and environmental-friendly technique to remove metal elements from contaminated water is of great importance. Algae are a kind of photosynthetic autotroph and exhibit excellent bioadsorption capacities, making them suitable for wastewater treatment. Methods: The effects of heavy metals (copper, lead and cadmium) on the growth, biomolecules accumulation, metabolic responses and antioxidant response of Dunaliella salina were investigated. Moreover, the Box-Behnken design (BBD) in response surface methodology (RSM) was used to optimize the biosorption capacity, and FT-IR was performed to explore the biosorption mechanism of D. salina on multiple heavy metals. Results: The growth of D. salina cells was significantly inhibited and the contents of intracellular photosynthetic pigments, polysaccharides and proteins were obviously reduced under different concentrations of Cu2+, Pb2+ and Cd2+, and the EC50 values were 18.14 mg/L, 160.37 mg/L and 3.32 mg/L at 72 h, respectively. Besides, the activities of antioxidant enzyme SOD and CAT in D. salina first increased, and then descended with increasing concentration of three metal ions, while MDA contents elevated continuously. Moreover, D. salina exhibited an excellent removal efficacy on three heavy metals. BBD assay revealed that the maximal removal rates for Cu2+, Pb2+, and Cd2+ were 88.9%, 87.2% and 72.9%, respectively under optimal adsorption conditions of pH 5-6, temperature 20-30°C, and adsorption time 6 h. Both surface biosorption and intracellular bioaccumulation mechanisms are involved in metal ions removal of D. salina. FT-IR spectrum exhibited the main functional groups including carboxyl (-COOH), hydroxyl (-OH), amino (-NH2), phosphate (-P=O) and sulfate (-S=O) are closely associated with the biosorption or removal of heavy metalsions. Discussion: Attributing to the brilliant biosorption capacity, Dunaliella salina may be developed to be an excellent adsorbent for heavy metals. [ABSTRACT FROM AUTHOR]

This study aimed to investigate the protective effects of pomegranate peel (PoP) extract on the gill, liver, and kidney tissues of common carp exposed to cadmium (Cd). For this purpose, 150 common carp weighing 65± 0.85 g were randomly divided into five groups with three triplicates for each group (30 fish per group). The control group received a standard diet without cadmium chloride (CdCl2), the Cd group was exposed to 0.5 mg/L CdCl2, and the extract groups received PoP extract with concentrations of 1%, 2%, and 4% (percentage of food weight) along with 0.5 mg/L CdCl2 in the water. After four weeks, tissue samples were collected from the gill, liver, and kidney and stained with hematoxylin and eosin for histopathological examination. In the gills of the Cd group, lesions included congestion, hemorrhage, clubbing or fusion of the secondary lamellae, and telangiectasia of the lamellae. The liver tissue of the Cd group exhibited severe degeneration and necrosis of hepatocytes, while hemorrhage, congestion, cellular degeneration or necrosis, and hyaline cast were visible in the kidney tissue of this group. The severity of the mentioned lesions was significantly reduced in the PoP extract groups, particularly at concentrations of 2% and 4% (p < 0.05). Based on the results, it can be concluded that PoP extract has significant protective effects on the gill, liver, and kidney tissues of common carp exposed to CdCl2. [ABSTRACT FROM AUTHOR]

Polysaccharides are functional foods or drugs that can be used to alleviate heavy metal poisoning by cadmium, lead, mercury, and arsenic. Industries generate substantial quantities of toxic heavy metal wastes, such as wastewater discharges, paints, electronic waste, batteries, pigments, and plastics, into the environment that pose a risk to human health. Therefore, it is imperative to eliminate accumulated heavy metal ions from the body and the environment. Heavy metal toxicity can lead to decreased energy levels and impair the functioning of vital organs, such as the brain, lungs, kidneys, liver, and blood. Prolonged exposure can result in progressive physical, muscular, and neurological degeneration that resembles conditions such as multiple sclerosis, Parkinson's disease, Alzheimer's disease, and muscular dystrophy. Polysaccharides operate through mechanisms such as chelation, antioxidant defense, immunomodulation, and tissue repair. Polysaccharides involved in heavy metal removal include methionine and cysteine, together with N-acetylcysteine, an acetylated form of cysteine, S-adenosylmethionine, a metabolite of methionine, α-lipoic acid, and the tripeptide glutathione (GSH). These compounds effectively bind with harmful heavy metals to create a stable complex and defend biological targets from metal ions, thus decreasing their harmful effects and causing them to be excreted from the body. This review also highlights the importance of polysaccharides' ability to mitigate oxidative stress, enhance immune responses, and support tissue repair processes. Polysaccharides are ubiquitous in nature and take part in diverse processes, making them potential natural therapies for heavy metal-related diseases. This review discusses the effectiveness of natural polysaccharides and the mechanisms that allow them to bind with heavy metals to alleviate their effects from the body and the environment. Polysaccharides have inherent features that enable them to function as pharmacological agents and regulate the immune response. [ABSTRACT FROM AUTHOR]

Environmental pollution and exposure to toxic metals such as cadmium (Cd) can cause severe and chronic diseases and have significant side effects on vital organs. The present study aimed to evaluate the effect of pomegranate peel on biochemical factors and lipid peroxidation in intoxication by Cd in Japanese quail. Two hundred seventy quails in different groups were fed diets containing Cd and pomegranate peel from 6 to 35 days old. Then, serum biochemical parameters were assessed, including liver enzymes, urea, and thiobarbituric acid. In the quails, Cd significantly increased MDA, urea, and AST (P < 0.05). Adding pomegranate peel at 1.5 and 2% levels decreased these parameters significantly (P < 0.05). In conclusion, dietary enrichment using pomegranate peel reduced the adverse effects of Cd by improving lipid peroxidation, aspartate aminotransferase (AST), and urea in Japanese quail. [ABSTRACT FROM AUTHOR]

This study sought to examine the anti-diabetic effect of nobiletin on streptozotocin (STZ)/cadmium (Cd)-induced diabetic nephrotoxic (DN) rats. The DN was induced using STZ (40 mg/kg b.w) intraperitoneally and Cd through drinking water for 12 weeks. The DN rats were treated with nobiletin of different concentrations (10, 20, and 40 mg/kg/BW). The STZ/Cd-induced DN leads to a significantly increased of the glucose levels, glycosylated haemoglobin, hepatic and kidney function markers, lipid peroxidation levels, and reduction of insulin levels, total haemoglobin, body weight, and antioxidant status markers. Our finding that nobiletin pathological impairment and diminished infiltration of neutrophil in kidney tubules and all biochemical enzymes were near normal levels in DN. More essentially, nobiletin strongly impedes the protein expression of renal nuclear NF-κB p65. Bax protein expression was significantly downregulated and elevated protein expression Bcl-2 was recorded in DN rats. These results show that nobiletin possesses antioxidant as well as anti-diabetic activities and thereby reduces chronic kidney diseases in rats. [ABSTRACT FROM AUTHOR]

Heavy metal cadmium (Cd) naturally occurs in soil and is a hazardous trace contaminant for humans, animals, and plants. The main sources of Cd pollution in soil include overuse of phosphatic fertilizers, manure, sewage sludge, and aerial deposition. That's why an experiment was conducted to analyze the effect of Cd toxicity in Capsicum annuum L. by selecting its seven varieties: Hybrid, Desi, Sathra, G-916, BR-763, BG-912, and F1-9226. Cadmium was spiked in soil with four levels, i.e., (0, 3, 4, and 5 mg Cd kg− 1 of soil) for a week for homogeneous dispersion of heavy metal. Chili seeds were sown in compost-filled loamy soil, and 25-day-old seedlings were transplanted into Cd-spiked soil. Cadmium increasing concentration in soil decreased chili growth characteristics, total soluble sugars, total proteins, and amino acids. On the other hand, the activities of antioxidant enzymes were increased with the increasing concentration of Cd in almost all the varieties. Treatment 5 mg Cd/kg application caused − 197.39%, -138.78%, -60.77%, -17.84%, -16.34%, -11.82% and − 10.37% decrease of carotenoids level in chili V2 (Desi) followed by V4 (G-916), V1 (Hy7brid), V7 (F1-9226), V6 (BG-912), V5 (BR-763) and V3 (Sathra) as compared to their controls. The maximum flavonoids among varieties were in V5 (BR-763), followed by V6 (BG-912), V7 (F1-9226), V3 (Sathra) and V1 (Hybrid). Flavonoids content was decreased with − 37.63% (Sathra), -34.78% (Hybrid), -33.85% (G-916), -31.96% (F1-9226), -31.44% (Desi), -30.58% (BR-763), -22.88% (BG-912) as compared to their control at 5 mg Cd/kg soil stress. The maximum decrease in POD, SOD, and CAT was − 31.81%, -25.98%, -16.39% in chili variety V7 (F1-9226) at 5 mg Cd/kg stress compared to its control. At the same time, maximum APX content decrease was − 82.91%, followed by -80.16%, -65.19%, -40.31%, -30.14%, -10.34% and − 6.45% in V4 (G-916), V2 (Desi), V3 (Sathra), V6 (BG-912), V1 (Hybrid), V7 (F1-9226) and V5 (BR-763) at 5 mg Cd/kg treatment as compared to control chili plants. The highest CAT was found in 5 chili varieties except Desi and G-916. Desi and G-916 varieties. V5 (BR-763) and V6 (BG-912) were susceptible, while V1 (Hybrid), V3 (Sathra), and V7 (F1-9226) were with intermediate growth attributes against Cd stress. Our results suggest that Desi and G-916 chili varieties are Cd tolerant and can be grown on a large scale to mitigate Cd stress naturally. [ABSTRACT FROM AUTHOR]

Nanotechnology is a valuable strategy for managing a number of medicinal, agricultural, and environmental concerns. Cocculus pendulus was used for selenium nanoparticles (SeNPs) synthesis to evaluate their usage for microbial inhibition and to enhance plant resistance to heavy metals. Mono-dispersed, spherical shape, and mean diameter (36.19 nm) of SeNPs were documented. More inhibitory potential was associated with SeNPs with inhibition zones of 38±0.3, 18±0.2, 18±0.1, 31±0.2, and 27±0.1 mm than extract of C. pendulus against B. subtilis, S. aureus, E. coli, K. pneumoniae, and C. albicans, respectively. SeNPs had successfully scavenged the free radicals of 2,2-diphenyl-1-picrylhydrazyl (DPPH) with lower IC50 (inhibitory concentration that inhibit 50% of DPPH) value (10.31 µg/mL) than that of C. pendulus extract (55.54 µg/mL). The effect of C. pendulus extract (200 mg/kg soil) alone or in combination with SeNPs (15 mg/kg soil of SeNPs) as a soil drench on shoot, root lengths, plant pigments, lead and cadmium contents of Corchorus olitorius under lead and cadmium stress (5 mg/L) was investigated. The pigments quantity and plant growth were decreased by cadmium and lead poisoning. Application of C. pendulus extracts or SeNPs decreased the Pb and Cd concentrations and improved the growth and metabolites of Corchorus olitorius plants. [ABSTRACT FROM AUTHOR]

Environmental pollution remains a major global health concern, particularly when it comes to heavy metals, which are associated with various health hazards. Among the prevalent heavy metals in the environment is cadmium (Cd). As a result, the current study aimed to investigate the nephroprotective potential of olive leaves extract (OLE) against Cd-induced chronic renal injury. Forty-eight albino rats were divided into four equal groups. Rats in the control group were received distilled water orally, while those in the OLE group were orally administered OLE 200 (mg/kg b.wt.) daily. The cadmium-intoxicated group rats were orally gavage 5 mg Cd/kg b.wt. twice a week and the OLE+Cd group received the same doses of both OLE and CdCl2. After 4 and 8 weeks of the experiment, blood and kidney samples were collected for analysis of kidney function test and histopathological examination. Oral administration of cadmium chloride (CdCl2) for 4 and 8 weeks resulted in nephrotoxicity, evidenced by a significant increase (P<0.05) in urea, uric acid, and creatinine levels. These biochemical changes were accompanied by distinct histopathological alterations, including renal hemorrhage, edema and vasculitis with severe glomerular and tubular necrosis as well as periglomerular fibrosis and marked interstitial fibrosis. Treatment with OLE exhibited a remarkable reduction in these histopathological changes and restored the serum parameters toward normal levels. In conclusion, OLE has a time-dependent mitigating effect against Cd-induced nephrotoxicity by reducing inflammation, glomerulotubular injury, and renal fibrosis, indicating that it is a potential natural product in counteracting chronic nephrotoxicity. [ABSTRACT FROM AUTHOR]

For the present study, two marine fish species Ariomma indica and Dasyatus bleekeri were collected from Visakhapatnam and Kakinada harbours, Pudimadaka, and Bheemili that lie along the Andhra Pradesh coast. The concentrations of As, Cd, Cu, Fe, Mn, Se, and Zn in the muscle tissues were determined by using EDXRF. The Estimated daily intake of those metals was evaluated and found to be higher than the reference dose levels. The calculated values of Target hazard quotient and Hazard index of those metals indicate no potential risk. Target cancer risk due to accumulation of As and Cd was determined and found to be in the acceptable range. However, the intake of heavy metals is influenced by the dietary habits of consumers and long-term exposure may show negative impact on their health. [ABSTRACT FROM AUTHOR]

Cadmium (Cd) is a mobile heavy metal that is highly toxic to almost all lifeforms. Urban eco-systems are susceptible to Cd contamination due to certain anthropogenic activities. Despite being recognised as an acutely toxic element, its biogeochemical behaviour is still poorly studied and understood, especially in urban ecosystems of tropical countries. Therefore, this study was undertaken to address this knowledge gap. This study was conducted at Air Hitam Sanitary Landfill (AHSL) in Puchong, Malaysia. Samples were collected from various abiotic and biotic factors representing the biogeochemical cycle, including soil, flora, arthropods, atmospheric deposition, leachates, and river water samples. Acid digestion using aqua regia was conducted to determine the total Cd concentration in all samples collected. Cd concentrations at AHSL were relatively high in all biotic and abiotic factors with the concentrations showing a range of 0.019 ppm to 1.568 ppm. The bulk of Cd contamination in the ecosystem was found to eventually end up in rivers. The average Cd concentration in the river samples exceeded several environmental guidelines. There was also evidence of Cd entering food chains via soil arthropods and plants. Thus, Cd poses a credible threat to inhabitants of tropical urban ecosystems. [ABSTRACT FROM AUTHOR]

Cadmium (Cd) is omnipresent trace element in environmental that is unessential in plants. Cd levels rise because of anthropogenic activity such as the combustion of fossil fuels, phosphate fertilizer manufacturing, mineral fertilizers, batteries technology. It is extremely toxic metal and reduces plant growth. In this context, the aim of this study was to investigate the effect of different concentrations (5/10/20/40 ppm) of Cd on germination of seeds and physiological effects in early developmental stage of tomato Solanum lycopersicum Lam. seedlings. 20 ppm (80%) and 40 ppm (83.3%) Cd concentrations caused significantly decrease in germination percentage. All Cd treatments were resulted with decrease in Vigor Index, especially in 20 ppm (42% decrease compared to control). Application of 5 ppm Cd caused decreases in chlorophyll and carotenoid contents in seedlings. Finally, significant decrease in protein content of 5 ppm, 10 ppm and 20 ppm treated seedlings were determined compared to control. As a conclusion, Cd negatively affected germination and physiological parameters of tomato in early developmental stage. Overall, these results indicate that Cd affects different physiologic processes and pathways according to concentration. [ABSTRACT FROM AUTHOR]

This study aimed to clarify the cause‐effect relationship between renal tubular damage and non‐cancer mortality in the general Japanese population. We conducted a 19‐year cohort study including 1110 men and 1,03 women who lived in three cadmium‐non‐polluted areas in 1993 or 1994. Mortality risk ratios based on urinary β2‐microglobulin (β2MG) and N‐acetyl‐β‐glucosaminidase (NAG) concentrations were estimated for specific non‐cancer diseases using the Fine and Gray competing risks regression model. In men, continuous urinary NAG (+1 μg/g cre) concentrations were significantly correlated with increased mortality caused by diseases of the respiratory system (hazard ratio (HR): 1.09, 95% confidence interval (CI): 1.03–1.15). Urinary β2MG (+100 μg/g cre) concentrations were significantly correlated with increased mortalities caused by kidney and urinary tract diseases (HR: 1.01, 95% CI: 1.00–1.03), renal diseases (HR: 1.01, 95% CI: 1.00–1.03), renal failure (HR: 1.02, 95% CI: 1.00–1.03), and external causes of mortality (HR: 1.01, 95% CI: 1.00–1.02). In women, urinary NAG (+1 μg/g cre) concentrations were significantly associated with increased mortality caused by ischemic heart diseases (HR: 1.02, 95% CI: 1.00–1.04) and kidney and urinary tract diseases (HR: 1.01, 95% CI: 1.00–1.04). Urinary β2MG (+100 μg/g cre) concentrations were significantly correlated with increased mortality caused by cardiovascular diseases (HR: 1.01, 95%CI: 1.00–1.02), ischemic heart diseases (HR: 1.01, 95%CI: 1.00–1.02), and kidney and urinary tract diseases (HR: 1.02, 95% CI: 1.01–1.03). The present study indicates that renal tubular damage was significantly related to several non‐cancer disease causes of mortality in Japan's general population living in cadmium‐non‐polluted areas. We evaluated the effect of renal tubular damage on non‐cancer mortality, by conducting a 19‐year cohort study in three cadmium‐non‐polluted areas in Japan. Mortality risk estimates based on urinary NAG and β2MG concentrations were significantly higher for respiratory, renal, and cardiovascular diseases. [ABSTRACT FROM AUTHOR]

Cadmium, a heavy metal, is recognized for its severe toxicity to living organisms, especially its detrimental effects on the kidneys, bones, and respiratory system. Ocimum gratissimum locally referred to as "scent leaf" has pharmacological properties as well as antioxidant and hepatoprotective properties. This study evaluated the protective effect of aqueous extract of O. gratissimum leaf on cadmium-induced liver and kidney injury in male Wistar rats. In this experiment, the rats were randomly assigned to five groups. The control group received water and standard rat pellets, the negative control group was administered 50 mg/kg of CdCl2 orally once every three days, and the positive control group received the same cadmium dosage along with a prior administration of 100 mg/kg of silymarin. The extract-treated groups were pretreated with 50 mg/kg of CdCl2 once every three days, coupled with daily administration of 400 and 800 mg/kg body weight of the extract. Significant increases (≤ 0.05) in serum levels of ALP, AST, ALT, bilirubin, and creatinine were observed with cadmium exposure, while total protein and urea were significantly decreased (≤ 0.05). SOD, CAT, and GSH were significantly decreased (≤ 0.05), while MDA level was significantly increased (≤ 0.05). However, treatment with silymarin and varying doses of the extract substantially improved liver and renal function indices, as well as restoring the antioxidant status of the rats to near-normal levels. In conclusion, this study suggests that the extract possesses antioxidant and hepato-renal protective properties, offering promise for further investigation into its potential in mitigating cadmiuminduced toxicity. [ABSTRACT FROM AUTHOR]

Cadmium (Cd) is a non-essential element with sub-lethal effects even at low concentrations. The persistent nature of Cd and its tendency to bioaccumulate eventually create harmful effects on water biota, including fish. Cd affects various aspects of hormonal action in fish since it bioaccumulates in the endocrine system and hinders the synthesis, secretion, and metabolic activity of hormones, causing severe damage along the hypothalamus–pituitary–gonadal axis. Linking reproductive and developmental impairments in fish with ecologically relevant concentrations of individual metals can be challenging due to the complexity of aquatic ecosystems. This review deliberated the significant and novel trends of toxicological difficulties and approaches, including elucidating environmental sources' bioavailability and Cd-induced toxic effects in freshwater fish. Both acute and chronic exposure to Cd can cause a range of adverse effects, such as growth inhibition, impaired reproductive capacity, endocrine disruption, and developmental abnormalities in freshwater fish, as evidenced by the present review. These investigations support the concept of Cd as a naturally available pollutant that causes irreversible damage in fish. These findings will help to understand the etiology of environmental circumstances that pose substantial dangers to fish health and are also crucial for preventing and treating exposure-related reproductive disturbances in freshwater fish due to environmental pollution. [ABSTRACT FROM AUTHOR]

Simple Summary: Cadmium is a prevalent heavy metal known to contribute to environmental contamination. Moreover, cadmium in the environment may accumulate in animals and plants and then enter the human body through the food chain, seriously threatening food safety and public health. Currently, cadmium exposure has been demonstrated to cause liver and kidney damage, as well as abnormal bone development, in ducks. However, there is limited research on the impact of cadmium on the gut microbiota of ducks. In this study, we investigated the alterations in the gut microbiota of ducks exposed to cadmium and identified the detrimental effects of cadmium on the gut microbiota. Ore extraction, chemical production, and agricultural fertilizers may release significant amounts of heavy metals, which may eventually accumulate widely in the environment and organisms over time, causing global ecological and health problems. As a recognized environmental contaminant, cadmium has been demonstrated to cause osteoporosis and renal injury, but research regarding the effects of cadmium on gut microbiota in ducks remains scarce. Herein, we aimed to characterize the adverse effects of cadmium on gut microbiota in ducks. Results indicated that cadmium exposure dramatically decreased gut microbial alpha diversity and caused significant changes in the main component of gut microbiota. Moreover, we also observed significant changes in the gut microbial composition in ducks exposed to cadmium. A microbial taxonomic investigation showed that Firmicutes, Bacteroidota, and Proteobacteria were the most preponderant phyla in ducks regardless of treatment, but the compositions and abundances of dominant genera were different. Meanwhile, a Metastats analysis indicated that cadmium exposure also caused a distinct increase in the levels of 1 phylum and 22 genera, as well as a significant reduction in the levels of 1 phylum and 36 genera. In summary, this investigation demonstrated that cadmium exposure could disturb gut microbial homeostasis by decreasing microbial diversity and altering microbial composition. Additionally, under the background of the rising environmental pollution caused by heavy metals, this investigation provides a crucial message for the assessment of environmental risks associated with cadmium exposure. [ABSTRACT FROM AUTHOR]

Cadmium (Cd) is one of the most hazardous metals to the environment and human health. Neurotoxicity is of the most serious hazards caused by Cd. Mirtazapine (MZP) is a central presynaptic α2 receptor antagonist used effectively in treating several neurological disorders. This study investigated the anti-inflammatory and antioxidant activity of MZP against Cd-induced neurotoxicity. In this study, rats were randomly divided into five groups: control, MZP (30 mg/kg), Cd (6.5 mg/kg/day; i.p), Cd + MZP (15 mg/kg), and Cd + MZP (30 mg/kg). Histopathological examination, oxidative stress biomarkers, inflammatory cytokines, and the impact of Nrf2 and NF-κB/TLR4 signals were assessed in our study. Compared to Cd control rats, MZP attenuated histological abrasions in the cerebral cortex and CA1 and CA3 regions of the hippocampus as well as the dentate gyrus. MZP attenuated oxidative injury by upregulating Nrf2. In addition, MZP suppressed the inflammatory response by decreasing TNF-α, IL-1β, and IL-6 mediated by downregulating TLR4 and NF-κB. It is noteworthy that MZP's neuroprotective actions were dose-dependent. Collectively, MZP is a promising therapeutic strategy for attenuating Cd-induced neurotoxicity by regulating Nrf2, and NF-κB/TLR4 signals, pending further study in clinical settings. [ABSTRACT FROM AUTHOR]

Cadmium (Cd) is a ductile metal in the form of a blueish or silvery-white powder. It is naturally found in soil (about 0.2 mg/kg), minerals, and water. Cd belongs to the group of toxic, carcinogenic, and stimulating elements. Its biological half-life in the human body ranges from 16 to even 30 years on average. Some lung diseases (such as emphysema, asthma, and bronchitis) and high blood pressure are thought to be related to slow poisoning. The symptoms of cadmium poisoning may vary depending on the time of exposure, the type of diet, and the age and health status of the exposed people. For non-smokers and non-occupational exposures, the only source of exposure is diet. The FAO/WHO recommends that the tolerable cadmium intake for an adult is approximately 0.4–0.5 mg/week (60–70 µg per day). Cadmium is primarily absorbed through the respiratory system (about 13–19% of Cd from the air), but it can also enter through the digestive system (about 10–44%), when dust is mixed and swallowed with saliva. The amount of accumulated Cd ranges from 0.14 to 3.2 ppm in muscles, 1.8 ppm in bones, and 0.0052 ppm in the blood. People who are most frequently exposed to heavy metals should be continuously monitored in order to maintain a healthy lifestyle, as well as to implement effective preventive measures and improve public health. [ABSTRACT FROM AUTHOR]

Current environmental issues include heavy metal contamination. Cadmium pollution in aquatic environments harms aquatic creatures and can pass to people through food chains. Cadmium poisoning damages bones, kidneys and causes cancer. Tubifex tubifex is a well-known water pollution indicator because of its good adaptation power in environmental pollution. Tubifex sp. is chosen as the test animal in this study since it is an indicator species and also a model non-target organism in ecotoxicology. The aim of this present work is to assess the toxicity of cadmium nitrate on Tubifex tubifex as a biomarker. Acute toxicity of cadmium nitrate was analysed by measuring the 96 h LC50 value. Physical observations revealed that cadmium induced autotomy of the caudal region of the worm and induced more mucus secretion. Behavioural alterations like changes in mucous secretion, clumping tendency and wrinkling effect were observed in cadmium-treated worms. Antioxidant enzymes level (MDA, CAT and SOD) increased significantly on cadmium nitrate exposure. In general, biomarker data show that cadmium exposure has stress-related consequences at the biochemical and physiological levels, reducing the overall health and survival of such animals. Highlights The toxicity of the heavy metal cadmium in acute and sub-acute levels was investigated in Tubifex tubifex. The goal of this study was to look at the effects of cadmium on oxidative stress and behavioural biomarkers in T. tubifex Sublethal cadmium exposure can impact the physiological functioning of annelids in the wild. [ABSTRACT FROM AUTHOR]

Purpose: Cadmium (Cd) accumulation in rice can be regulated by applying sulfur (S) fertilizers and water management, but the mechanism and the effect on soil microorganisms are unclear. This study aims to clarify the effect of sulfur forms on rice Cd accumulation and soil microbial community structure under different irrigation regimes. Methods: The present study investigated the effects of sulfur fertilizers (S0 and Na2SO4) and water management by continuous flooding (flooded) and intermittent flooding and draining (Int-F3D5) on soil Cd bioavailability and the microbial community structure using inductively coupled plasma mass spectrometry (ICP-MS), scanning electron microscopy with energy dispersive X-ray spectrometry (SEM–EDS), and 16S rRNA gene sequencing technology. Results: When flooded, S0 and Na2SO4 increased the dry weight of rice grain 2.3- and 0.9-fold, respectively, and reduced the Cd concentration by 152% and 61%, respectively. The ascorbic citrate acetic (ACA) extractable Fe content from flooded rice surface treated with S0 and Na2SO4 increased by 98% and 64%, respectively, indicating that the S fertilizer promoted iron plaque formation on the surfaces of rice roots. Gammaproteobacteria were the most predominant under all management conditions. Syntrophobacteraceae and Geobacter were particularly abundant in the rice rhizosphere treated with Int-F3D5 and exogenous Na2SO4, and it might play a crucial role in alleviating Cd stress caused by S fertilizer. Conclusion: Under flooded conditions, S0 had a more significant effect on the reduction of cadmium uptake by rice. Sulfur fertilizers promoted iron plaque formation partially to hinder Cd accumulation. Under Int-F3D5 conditions, Na2SO4 recruited more beneficial rhizosphere bacteria, which may be a potential mechanism of reducing Cd transfer from soil to rice. [ABSTRACT FROM AUTHOR]

This study aimed to evaluate the effect of Lactobacillus fermentum ATCC 14931 as a probiotic to improve immune function and reduce the adverse effects of cadmium (Cd) in zebrafish. This study was performed for 60 days of feeding and 72 hours exposure to 7 g/L Cd. The study groups included C: Control, B: Feeding with a basal diet and exposure to cd, T1 and T3: feeding with probiotic diet in concentrations of 1.5×104 and 1.5×105 CFU ml-1 and exposure to cd, respectively. The biometrical index, mortality rate, Cd accumulation in tissue, superoxide dismutase (SOD) activity, and concentration of malondialdehyde (MDA) were examined. According to the results, feeding with probiotics increased the length and weight growth of fish (P<0.05). The mortality rate in probiotic-fed groups was significantly reduced (P<0.05), while no significant difference was recorded in the cd accumulation rate of the gastrointestinal tract (P>0.05). Also, the SOD activity and MDA level decreased in T1 and T2 (P<0.05). Generally, the results showed that L. fermentum can be used as a suitable dietary supplement to prevent the adverse effects of acute Cd exposure in fish. [ABSTRACT FROM AUTHOR]

BACKGROUND AND OBJECTIVES: For enhanced environmental management of the Ciliwung River, toxic pollutions such as cadmium dan lead data are required. Cadmium and lead have widespread industrial applications. However, cadmium and lead are poisonous and classified as cancer-causing non-essential elements. Moreover, cadmium and lead accumulation in Ciliwung River-caught eels has not yet been examined. Consequently, it is essential to acquire the gathered data from this study. The primary objective of this study was to explore the accumulation of cadmium and lead in sediments and eel organs along the Ciliwung River and to estimate the weekly cadmium and lead intake from eel consumed by the people. METHODS: Sediment and eel samples were collected at six sampling locations ranging from the upstream, midstream, and downstream regions. Method of 3051a of the United States Environmental Protection Agency was applied to analyze the metal yield from the sediment samples and targeted eel organs (gills, digestive tract, and flesh). In addition, quality control and quality assurance standards were employed, and Certified Reference Materials were used to ensure the quality of data and instruments. FINDINGS: The average concentrations of cadmium (0.7825±0.3768 milligram per kilogram) and lead (36.9333±14.9040 milligram per kilogram) were greater than their natural levels. The average cadmium concentration in riverine sediment was below the interim sediment quality guidelines. However, the lead concentration exceeded the guidelines. The cadmium and lead accumulation patterns in the sediment and eels were found to be lowest in the upstream and found increased in the downstream are. In this case, the gills acquired the most concentration of cadmium (1.4571±0.3433 microgram per gram) and lead (43.2489±18.6775 microgram per gram). The fact that eel gills accumulated the highest cadmium and lead indicates the presence of heavy metals in their environment. The accumulation of cadmium and lead in the eel surpassed the permitted levels. According to the Provisional Tolerable Weekly Intake estimation, this research showed 0.0328 milligram/week for the cadmium and 1.2826 milligram/week for the lead. CONCLUSION: The prevalence of cadmium and lead in riverine sediments and eels in the Ciliwung River is believed to be predominantly the result of inefficient wastewater management. However, cadmium and lead pollution must be handled with extreme caution because it interferes with the physiological processes of the biota, hence decreasing the population of eels and posing a health risk if consumed. In general, Asian swamp eels from the Ciliwung River are still edible. As a result, it is hoped that enhanced management will reduce the number of pollutants entering the riverine ecosystem. [ABSTRACT FROM AUTHOR]

Cadmium pollution turns out to be a global environmental problem. This study conducted a quantitative and qualitative bibliometric analysis based on 9188 research items from the Web of Science Core Collection published in the last 20 years (2000–2020), presenting an in-depth statistical investigation of global freshwater cadmium research progress and developing trend. Our results demonstrated that the researchers from China, the USA, and India contribute the most to this field. The primary sources of cadmium are mining, industry, wastewater, sedimentation, and agricultural activities. In developing countries, cadmium exposure occurs mainly through the air, freshwater, and food. Fish and vegetables are the main food sources of cadmium for humans because of their high accumulation capability. Source evaluation, detection, and remediation represent the main technologies used to clean up cadmium-contaminated sites. To mitigate the risk of cadmium contamination in freshwater, biomarker-based cadmium monitoring methods and integrated policies/strategies to reduce cadmium exposure merit further concern. [ABSTRACT FROM AUTHOR]

Parsley is known in Lebanese diet for its nutraceutical properties and health benefits. However, the rising heavy metal contamination in irrigation water and agricultural soil affects crop production and safety. This study aims to assess parsley consumption in Lebanese population using a web-based food frequency survey, to measure cadmium accumulation and its effect on the physiology of parsley. Parsley was grown in soil for 9 weeks and exposed to different CdCl2 concentrations (0, 0.5, 2, 20, and 200 ppm). After harvesting, chlorophyll, sugar, and amino acid contents in parsley leaves were evaluated, and cadmium content was measured in soil, root, and shoot using inductively coupled plasma mass spectrometry. Estimated average daily consumption of parsley was 19.175 g/day. Cadmium content in parsley increased with increased cadmium soil concentration with higher increase in roots (47.648 ± 1.6 mg/kg) than shoots (1.522 ± 0.01 mg/kg) in the soil treated with 200 mg/kg of CdCl2. The study revealed that cadmium causes significant decrease in total fresh and shoot fresh weights and in chlorophylls a, b, and total chlorophyll. Cadmium-treated plants showed a significant increase in total sugar and amino acid contents suggesting the induction of a potential stress on the plant. Values of the bioconcentration factor and the translocation factor in parsley indicate the plant's capacity to accumulate cadmium. The target hazard quotient had a value < 1 suggesting plant cadmium remediation through phytostabilization, concentrating the metal in roots. Potentially, parsley remains safe for consumption with low risk to human health when grown in cadmium-polluted soils. [ABSTRACT FROM AUTHOR]

Metal contamination coupled with aridity is a major challenge for remediation of abiotic stressed soils throughout the world. Both biochar and beneficial bacteria showed a significant effect in bioremediation; however, their conjugate study needs more exploration. Two rhizobacteria strains Serratia sp. FV34b and Pseudomonas sp. ASe42b isolated from multi-metal and drought stressed sites showed multiple plant-growth-promoting attributes (phosphate solubilization, indole-3-acetic acid, siderophore, and ammonia production). Both strains were able to tolerate a high concentration of Cd along with being resistant to drought (−0.05 to −0.73 MPa). The seldom studied biomass of Amaranthus caudatus L. was used for biochar preparation by pyrolyzing it at 470 °C for 160 min under limited oxygen and then using it for the preparation of biochar-based microbial cell composites (BMC)s. To check the efficiency of BMC under Cd stress (21 mg kg−1 soil) and drought, a pot-scale study was conducted using Brassica napus L. for 47 days. Both the BMC5 (Biochar + Serratia sp. FV43b) and BMC9 (Biochar + Pseudomonas sp. ASe42b) improved the seed germination, plant biometrical (shoot and root biomass, length of organs) and physiological (photosynthetic pigments, proline, malondialdehyde, and relative water content) parameters under drought (exerted until it reaches up to 50% of field capacity) and Cd-spiked soil. However, for most of them, no or few significant differences were observed for BMC9 before and after drought. Moreover, BMC9 maximized the Cd accumulation in root and meager transfer to shoot, making it a best bioformulation for sustainable bioremediation of Cd and drought stressed soils using rapeseed plant. [ABSTRACT FROM AUTHOR]

Ganoderma lucidum is widely cultivated and used as traditional medicine in China and other Asian countries. As a member of macrofungi, Ganoderma lucidum is also prone to bioaccumulation of cadmium and other heavy metals in a polluted environment, which affects the growth and production of Ganoderma lucidum, as well as human health. N-Acetyl-l-cysteine (NAC) is considered a general antioxidant and free radical scavenger that is involved in the regulation of various stress responses in plants and animals. However, whether NAC could regulate cadmium stress responses in macrofungi, particularly edible fungi, is still unknown. In this work, we found that the exogenous NAC could alleviate Cd-induced growth inhibition and reduce the cadmium accumulation in Ganoderma lucidum. The application of the NAC cloud also inhibit cadmium-induced H2O2 production in the mycelia. By using transcriptome analysis, 2920 and 1046 differentially expressed unigenes were identified in "Cd100 vs CK" and "NAC_Cd100 vs Cd100," respectively. These differential unigenes were classified into a set of functional categories and pathways, which indicated that various biological pathways may play critical roles in the protective effect of NAC against Cd‑induced toxicity in Ganoderma lucidum. Furthermore, it suggested that the ATP-binding cassette transporter, ZIP transporter, heat shock protein, glutathione transferases, and Cytochrome P450 genes contributed to the increased tolerance to cadmium stress after NAC application in Ganoderma lucidum. These results provide new insight into the physiological and molecular response of Ganoderma lucidum to cadmium stress and the protective role of NAC against cadmium toxicity. [ABSTRACT FROM AUTHOR]

Cadmium (Cd) is a toxic and carcinogenic pollutant widely distributed in the environment. Dietary intake is the main source of Cd exposure for the nonsmoking population. Assessment of dietary Cd intake provides a pathway to predict Cd body burden and potential health effects. Kidney has been considered as the most sensitive target of chronic Cd exposure. Because of the proportional relationship between Cd accumulation in kidney and Cd excretion via urine, urinary Cd (UCd) has been used as a biomarker of Cd exposure. Here, we review the dietary Cd intake levels in different countries, summarize the global food Cd concentrations reported in both market basket and field surveys, discuss UCd levels among different populations, and illustrate the associations between dietary Cd intake and UCd levels in population-based studies. Recommendations for the prevention and reduction of Cd exposure through anthropogenic inputs and the food chain are also proposed. This review presents a worldwide overview of Cd exposure status through diet for the general population as well as those living in contaminated areas, and provides evidence for policy makers to protect humans from Cd exposure and related health effects. [ABSTRACT FROM AUTHOR]

Coal waste composed of naturally occurring minerals is applicable as a reactive medium to permeable reactive barriers due to its reactivity to heavy metals. In this study, we evaluated the longevity of coal waste as PRB media to control heavy metal-contaminated groundwater considering variable groundwater velocity. Breakthrough experiments were conducted using coal waste-filled column by injecting artificial groundwater, 10 mg/L of cadmium solution. The artificial groundwater was fed to the column at different flow rates to mimic a wide range of porewater velocities in the saturated zone. The reaction between cadmium breakthrough curves was analyzed using a two-site nonequilibrium sorption model. The cadmium breakthrough curves showed a significant retardation, which increased with decreasing porewater velocity. The greater the retardation, the longer the longevity of coal waste could be expected. The greater retardation under a slower velocity environment was due to the higher fraction of equilibrium reaction. The nonequilibrium reaction parameters could be functionalized with respect to the porewater velocity. The simulation of contaminant transport using the reaction parameters could be used as a method to evaluate the longevity of the pollution-blocking material in an underground environment. [ABSTRACT FROM AUTHOR]

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Inhalation exposure to cadmium at the workplace has been associated with an increased risk of lung cancer and non-cancer respiratory effects. To ensure levels of cadmium remain below effect levels, air quality is monitored and regulations specifying an air limit value are implemented. The EU Carcinogens and Mutagens Directive of 2019 recommended values for the inhalable fraction and the respirable fraction but the latter only for a transitional period. Cadmium exposure has also been associated with systemic effects, following its storage in the kidneys and due to its long half-life. The accumulation of cadmium occurs via different exposure routes and from different sources, including workplace dust and fumes, food, and smoking. Biomonitoring (in blood, urine) has been identified as the most appropriate method to follow up cumulative exposure and total cadmium body burden, as it conveniently reflects intakes by all routes. However, it is not systematically implemented. This paper has a double objective: first, proposing a possible limit value for the respirable fraction, using an approach integrating epidemiological data. Secondly, demonstrating that the implementation of both air and biological limit values is key to protecting workers' health in occupational settings. The paper summarizes the current knowledge on cadmium health effects and how biomarkers reflect those. It presents an approach to derive a respirable value, using recent human data, and describes how the combination of air monitoring and biomonitoring is applied by the EU industry to protect the workforce. While a respirable fraction value helps protect workers against local respiratory adverse health effects, air monitoring alone is not sufficient to protect workers against systemic effects of cadmium. Therefore, complementary biomonitoring and the implementation of a biological limit value is recommended. [ABSTRACT FROM AUTHOR]

It is infrequent to have a single metal in the wastewater. For this reason, the elimination of Pb2+ and Cd2+ in one and two-component system was examined by xanthate-modified Phaseolus vulgaris in a batch mode. Through grafting, sulphur-bearing groupings with the help of magnesium xanthate were added onto P. vulgaris and xanthate-modified innovative P. vulgaris biosorbent has been produced for the removal of metal ions, that is, lead and cadmium. These innovative sulphur sites were attained successfully and confirmed with the help of Fourier-transform infrared spectroscopy, elemental analysis, and change in surface morphology by scanning electron microscopy. The point of zero charges pHpzc of xanthate-modified P. vulgaris was observed to be 7.20 which makes it appropriate for the sorption of cations. The batch sorption implementation of xanthate-modified P. vulgaris includes sorbent amount, pH, linear and non-linear regression analysis, and kinetic curves. The xanthate-modified P. vulgaris adsorbed 95.65% cadmium (at pH 4.0) and 90.36% of lead (at pH 5.0) from a single aqueous system. The sorption of Pb2+ and Cd2+ by xanthate-modified P. vulgaris follow the linear regression of Langmuir isotherm with qmax of 160.97 and 150.50 mg/L, respectively which is substantially greater than that of many other reported ones. The xanthate-modified P. vulgaris demonstrated rapid uptake capacity of Pb2+ and Cd2+ following the high value of correlation coefficient with pseudo-second-order kinetics. This sorption process for Pb2+ and Cd2+ was found to be endothermic and spontaneous. The binding capacities however reduced in the binary system. This, therefore revealed that the xanthate-modified P. vulgaris can be an encouraging biosorbent for the remediation of Pb2+ and Cd2+ from contaminated water. [ABSTRACT FROM AUTHOR]

In aquatic ecosystems, animals are often exposed to a combination of stressors, including both natural and anthropogenic factors. Combined stressors may have additive or interactive effects on animals, either magnifying or reducing the effects caused by each stressor alone. Therefore, standardized bioassays can lead to overestimations or underestimations of the risk of toxicants if natural stressors are not bear in mind. The inclusion of natural stress in laboratory bioassays may help to extrapolate the laboratory results to ecosystems. This study assesses the effects of successive exposure to two sources of stress (high water conductivity and cadmium toxicity) on the behavior and survival of the aquatic snail Potamopyrgus antipodarum (Tateidae, Mollusca). I conducted a bioassay consisting on exposure to high conductivity (5000 mg NaCl/L, 7 days), followed by exposure to cadmium (0.03, 0.125, and 0.25 mg Cd/L for 7 days) and by a post-exposure period (7 days). Mortality, inactivity, and the time to start activity of active animals were monitored in each animal. In general, cadmium lethality was higher in animals previously undergoing high conductivity than in non-stressed ones. Previously stressed animals showed longer time to start activity, with a noticeable effect at the two highest cadmium concentrations. Animals submitted to the two highest cadmium concentration both, stressed and non-stressed, showed a moderate recovery during the post-exposure period. It is concluded that previous stress caused a worsening of the cadmium toxicity on the aquatic snail Potamopyrgus antipodarum, which is especially noticeable for mortality. However, there was no interactive effect between cadmium and conductivity on snail activity, which may be indicative of recovery after cadmium exposure regardless the previous stress suffered by the snails. [ABSTRACT FROM AUTHOR]

Cigarette smoking is one of the leading causes of preventable and premature death worldwide. Even worse, many people are generally exposed to passive smoking, which leads to several respiratory diseases and related mortalities. Considering, more than 7000 compounds are included in cigarettes, their combustion results intoxicants that have deleterious effects on health. However, there is a lack of research analyzing the effects of smoking and passive smoking on all-cause and disease-specific mortality through its chemical compounds including heavy metals. Thus, this study aimed to evaluate the effect of smoking and passive smoking on all-cause and disease-specific mortality mediated by cadmium, one of the representative smoking-related heavy metals using data from the National Health and Nutrition Examination Survey (NHANES) 1999–2018 in the United States. We found that current smoking and passive smoking was related to increased risk of all-cause, CVD-related, and cancer-related mortality. Notably, passive smoking showed a synergistic effect with smoking status on the risk of mortality. In particular, current smokers with passive smoking had the highest risk of all-cause and disease-specific deaths. In addition, the accumulation of cadmium in the blood due to smoking and passive smoking mediates the increased risk of all-cause mortality. Further studies are needed to monitor and treat cadmium toxicity to improve smoking-related mortality rates. [ABSTRACT FROM AUTHOR]

BACKGROUND: Cadmium is a heavy metal harmful to animals and humans. Exposure to it causes inflammation, apoptosis, or necrosis in numerous tissues, including the adrenal. OBJECTIVES: The present research investigates the effect of cadmium toxicity on the expression of genes involved in inflammation and fibrosis. Inflammation increases the rate of parenchymal cell death, and fibrosis will only fill the place of dead cells without being able to perform the function of the primary parenchyma. METHODS: In this research, cadmium chloride with a concentration of 20 mg/kg was added to the diet of ten mice in two groups of five. On the 30th day of the study, the adrenal glands were quickly sent to the laboratory. The expression of NF-kB/MAPK, hematoxylin, eosin tissue staining, and immunohistochemistry (CD163) were performed. RESULTS: The inflammation mentioned in others' research can also be associated with the activation of the nuclear factor kappa (NF-kB) pathway. NF-KB gene products initiate mitogen-activated protein kinase (MAPK) and p38 pathways. Previous studies indicate that MAPK induces necrosis or apoptosis in tissues. In histopathology, dense and possibly pyknosis nuclei are more common in the cadmium group. The higher expression of the CD163 molecule in the cadmium group reveals the beginning of the fibrosis process after chronic inflammation. CONCLUSIONS: This report provides more basic data to investigate the mechanism of adrenal damage in cadmium poisoning. Cadmium causes the death of cells by affecting the inflammatory pathways. Additionally, the stimulation of the fibrosis process causes greater irreparable damage to the damaged tissue of the adrenal gland. [ABSTRACT FROM AUTHOR]

Cadmium (Cd) is a food contaminant that poses serious threats to animal health, including birds. It is also an air pollutant with well-known neurotoxic effects on humans. However, knowledge on the neurotoxic effects of chronic Cd exposure on chicken is limited. Thus, this study assessed the neurotoxic effects of chronic Cd on chicken cerebellum. Chicks were exposed to 0 (control), 35 (low), and 70 (high) mg/kg of Cd for 90 days, and the expression of genes related to the heat-shock response was investigated. The chickens showed clinical symptoms of ataxia, and histopathology revealed that Cd exposure decreased the number of Purkinje cells and induced degeneration of Purkinje cells with pyknosis, and some dendrites were missing. Moreover, Cd exposure increased the expression of heat-shock factors, HSF1, HSF2, and HSF3, and heat-shock proteins, HSP60, HSP70, HSP90, and HSP110. These changes indicate that HSPs improve the tolerance of the cerebellum to Cd. Conversely, the expressions of HSP10, HSP25, and HSP40 were decreased significantly, which indicated that Cd inhibits the expression of small heat-shock proteins. However, HSP27 and HSP47 were upregulated following low-dose Cd exposure, but downregulated under high-dose Cd exposure. This work sheds light on the toxic effects of Cd on the cerebellum, and it may provide evidence for health risks posed by Cd. Additionally, this work also identified a novel target of Cd exposure in that Cd induces cerebellar injury by disrupting the heat-shock response. Cd can be absorbed into chicken's cerebellum through the food chain, which eventually caused cerebellar injury. This study provided a new insight that chronic Cd-induced neurotoxicity in the cerebellum is associated with alterations in heat-shock response–related genes, which indicated that Cd through disturbing heat-shock response induced cerebellar injury. [ABSTRACT FROM AUTHOR]

The exposure of animals to pollution in ecosystems is not always chronic. Toxicants can remain in aquatic ecosystems for a short-term. To improve the extrapolation of laboratory results to natural scenarios the inclusion of post-exposure periods is a relevant issue. The present study focuses on the assessment of cadmium toxicity on survival and behavior of the aquatic snail Potamopyrgus antipodarum (Tateidae, Mollusca) during exposure and post-exposure. Animals were exposed for 48 h to cadmium (0.05, 0.14, 0.44 and 1.34 mg Cd/L) and 168 h of post-exposure. During the post-exposure period an increase in mortality in all concentrations was observed. The effects observed during the post-exposure period on the LC50 and EC50 were significant. During the post-exposure, behavior showed a clear recovery in surviving animals exposed to 0.44 mg Cd/L. Animals exposed to 0.05 mg Cd/L did not show differences with control. Therefore, mortality after exposure should be included in the ecotoxicological bioassays for a more realistic estimation of the cadmium effects. To assess the degree of animal recovery after cadmium exposure, behaviour has been shown as an adequate parameter. [ABSTRACT FROM AUTHOR]

Cadmium (Cd) is a highly toxic metal that is distributed worldwide. Exposure to it is correlated with a vast number of diseases and organism malfunctions. Exopolysaccharides (EPS) derived from Lactiplantibacillus plantarum BGAN8, EPS-AN8, previously showed great potential for the in vitro protection of intestinal cells from this metal. Here, we investigated the potential of food supplemented with EPS-AN8 to protect rats from the hazardous effects of Cd exposure. After thirty days of exposure to lower (5 ppm) and higher (50 ppm)-Cd doses, the administration of EPS-AN8 led to decreased Cd content in the kidneys, liver, and blood compared to only Cd-treated groups, whereas the fecal Cd content was strongly enriched. In addition, EPS-AN8 reversed Cd-provoked effects on the most significant parameters of oxidative stress (MDA, CAT, GST, and GSH) and inflammation (IL-1β, TNF-α, and IFN-γ) in the duodenum. Moreover, micrographs of the duodenum were in line with these findings. As the gut microbiota has an important role in maintaining homeostasis, we used 16S rRNA amplicon sequencing and investigated the effects of Cd and EPS-AN8 on one part of the microbiota presented in the duodenum. Although Cd decreased the growth of lactobacilli and mostly favored the blooming of opportunistic pathogen bacteria, parallel intake of EPS-AN8 reversed those changes. Therefore, our results imply that EPS-AN8 might be extremely noteworthy in combatting this toxic environmental pollutant. [ABSTRACT FROM AUTHOR]