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Kumari P, Nanda KP, Firdaus H. Adverse effects of cadmium on lymphoid organs, immune cells, and immunological responses. J Appl Toxicol 2024. [PMID: 39044417 DOI: 10.1002/jat.4675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Revised: 06/22/2024] [Accepted: 07/09/2024] [Indexed: 07/25/2024]
Abstract
Humans and animals possess robust immune systems to safeguard against foreign pathogens. However, recent reports suggest a greater incidence of immunity breakdown due to exposure to environmental pollutants, with heavy metals emerging as potential candidates in such immuno-toxicological studies. While we have extensive data on the general toxicity resulting from exposure to heavy metals, comprehensive documentation of their role as immune disruptors remains scarce. Cd (Cadmium) exerts immunomodulation by interfering with immune organs and cells, leading to altered structure, physiology, and function, thereby inducing symptoms of immune deregulation, inflammation and/or autoimmunity. This review aims to summarize the link between Cd exposure and immune dysfunction, drawing from case studies on exposed human subjects, as well as research conducted on various model organisms and in-vitro culture systems.
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Affiliation(s)
- Priyanka Kumari
- Department of Life Sciences, Central University of Jharkhand, Cheri-Manatu Campus, Kanke, Ranchi, Jharkhand, India
| | - Kumari Pragati Nanda
- Department of Life Sciences, Central University of Jharkhand, Cheri-Manatu Campus, Kanke, Ranchi, Jharkhand, India
| | - Hena Firdaus
- Department of Life Sciences, Central University of Jharkhand, Cheri-Manatu Campus, Kanke, Ranchi, Jharkhand, India
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Shao R, Su L, Wang P, Han X, Wang T, Dai J, Gu Y, Luo J, Deng L, Liu J. Cadmium Exposure was Associated with Sex-Specific Thyroid Dysfunction: Consistent Evidence from Two Independent Cross-Sectional Studies Based on Urinary and Blood Cadmium Measurements. Biol Trace Elem Res 2024:10.1007/s12011-024-04176-7. [PMID: 38630343 DOI: 10.1007/s12011-024-04176-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 04/07/2024] [Indexed: 05/07/2024]
Abstract
Population-based studies on the association between cadmium (Cd) exposure and thyroid function are limited and have shown conflicting results. Two independent cross-sectional studies using different Cd biomarkers were carried out in six rural areas with different soil Cd levels in China. Thyroid dysfunction was defined based on levels of thyroid stimulating hormone (TSH) and free thyroxine (FT4). Multivariable linear regression, multiple logistic regression, and restrictive cubic splines models were used to estimate the association between Cd and thyroid dysfunction. For both of the two independent studies, higher Cd levels were observed to be associated with lower TSH levels and higher risk of thyroid dysfunction. The negative relationship between urinary Cd and TSH was found in both total participants (β = - 0.072, p = 0.008) and males (β = - 0.119, p = 0.020) but not in females; however, the negative relationship between blood Cd and TSH was only found in females (β = - 0.104, p = 0.024). Higher urinary Cd was associated with higher risk of thyroid dysfunction (OR = 1.77, p = 0.031), while higher blood Cd was associated with higher risk of thyroid dysfunction (OR = 1.95, p = 0.011). Results from the two independent cross-sectional studies consistently suggested that higher Cd levels were associated with sex-specific thyroid dysfunction.
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Affiliation(s)
- Ranqi Shao
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, 29 Nanwei Road, Beijing, 100050, China
| | - Liqin Su
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, 29 Nanwei Road, Beijing, 100050, China.
| | - Peng Wang
- Jiangsu Key Laboratory for Organic Waste Utilization, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Xu Han
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, 29 Nanwei Road, Beijing, 100050, China
| | - Ting Wang
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, 29 Nanwei Road, Beijing, 100050, China
| | - Jun Dai
- Jiangsu Key Laboratory for Organic Waste Utilization, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yi Gu
- Jiangsu Key Laboratory for Organic Waste Utilization, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Jiao Luo
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, 29 Nanwei Road, Beijing, 100050, China
| | - Lifang Deng
- Yuhu Center for Disease Control and Prevention, Xiangtan, 411100, China
| | - Jingping Liu
- Changde Center for Disease Control and Prevention, Changde, 415000, China
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Okhue E, Kadiri HE, Ichipi-Ifukor PC, Ben-Azu B, Asagba SO, Achuba FI, Oyem JC. Prenatal double-hit with aluminium and cadmium mediate testicular atrophy and hypothalamic hypoplasia: the role of oxido-nitrergic stress and endocrine perturbations. Biometals 2024; 37:477-494. [PMID: 38190032 DOI: 10.1007/s10534-023-00563-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Accepted: 11/09/2023] [Indexed: 01/09/2024]
Abstract
There is limited experimental evidence on the biochemical consequences of aluminium (Al) and cadmium (Cd) co-exposures during pregnancy and postnatal life.This study investigated the impacts of perinatal Al chloride (AlCl3) and Cd chloride (CdCl2) co-exposures on neuroendocrine functions in mice offspring during postnatal life. The study comprised of four pregnant experimental groups. Group 1 received AlCl3 (10 mg/kg), group 2 were administered CdCl2 (1.5 mg/kg), while group 3 received both AlCl3 (10 mg/kg) and CdCl2 (1.5 mg/kg) (AlCl3+CdCl2), and group 4 received saline (10 mL/kg) only and served as control group. All experimental animals were chemically exposed once daily from gestation days 7-20. Upon delivery, male pups were regrouped based on maternal chemical exposure on postnatal day 21 (PND 21) and allowed to grow to adulthood until PND 78, after which they were sacrificed for assessment of neuroendocrine markers and histological investigations. There was no statistical significance (p > 0.05) on follicle stimulating hormone, testosterone, estrogen and progesterone, thyroid stimulating hormone, thyroxine (T4) in all treatment groups relative to controls|. However, AlCl3 and AlCl3-CdCl2 significantly (p < 0.05) reduced triiodothyronine (T3) levels, with a profound increase in T3:T4 ratio by AlCl3, and AlCl3+CdCl2 compared to control. Furthermore, pups from pregnant mice treated with CdCl2 and AlCl3+CdCl2 demonstrated increased testicular malondialdehyde concentration with increased catalase activity relative to controls, suggesting oxidative imbalance. In addition, AlCl3, CdCl2, and AlCl3+CdCl2 exposures induced testicular and hypothalamic architectural disruption compared to controls, with marked architectural derangement in the AlCl3+CdCl2 group. Our findings suggest that prenatal co-exposures to Alcl3 and CdCl2 induce testicular and hypothalamic alterations in offspring via a testicular oxidative stress and thyrotoxicosis-dependent mechanisms.
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Affiliation(s)
- Emmanuel Okhue
- Department of Biochemistry, Faculty of Science, Delta State University, Abraka, Nigeria
| | - Helen Ejiro Kadiri
- Department of Biochemistry, Faculty of Science, Delta State University, Abraka, Nigeria
| | | | - Benneth Ben-Azu
- DELSU Joint Canada-Israel Neuroscience and Biopsychiatry Laboratory, Department of Pharmacology, Faculty of Basic Medical Sciences, Delta State University, Abraka, Nigeria
| | | | | | - John Chukwuma Oyem
- Department of Anatomy, Faculty of Basic Medical Sciences, Novena University, Ogume, Nigeria
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Bjørklund G, Đorđević AB, Hamdan H, Wallace DR, Peana M. Metal-induced autoimmunity in neurological disorders: A review of current understanding and future directions. Autoimmun Rev 2024; 23:103509. [PMID: 38159894 DOI: 10.1016/j.autrev.2023.103509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Accepted: 12/21/2023] [Indexed: 01/03/2024]
Abstract
Autoimmunity is a multifaceted disorder influenced by both genetic and environmental factors, and metal exposure has been implicated as a potential catalyst, especially in autoimmune diseases affecting the central nervous system. Notably, metals like mercury, lead, and aluminum exhibit well-established neurotoxic effects, yet the precise mechanisms by which they elicit autoimmune responses in susceptible individuals remain unclear. Recent studies propose that metal-induced autoimmunity may arise from direct toxic effects on immune cells and tissues, coupled with indirect impacts on the gut microbiome and the blood-brain barrier. These effects can activate self-reactive T cells, prompting the production of autoantibodies, inflammatory responses, and tissue damage. Diagnosing metal-induced autoimmunity proves challenging due to nonspecific symptoms and a lack of reliable biomarkers. Treatment typically involves chelation therapy to eliminate excess metals and immunomodulatory agents to suppress autoimmune responses. Prevention strategies include lifestyle adjustments to reduce metal exposure and avoiding occupational and environmental risks. Prognosis is generally favorable with proper treatment; however, untreated cases may lead to autoimmune disorder progression and irreversible organ damage, particularly in the brain. Future research aims to identify genetic and environmental risk factors, enhance diagnostic precision, and explore novel treatment approaches for improved prevention and management of this intricate and debilitating disease.
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Affiliation(s)
- Geir Bjørklund
- Council for Nutritional and Environmental Medicine, Mo i Rana, Norway.
| | | | - Halla Hamdan
- Department of Pharmacology, Oklahoma State University Center for Health Sciences, Tulsa, OK, United States
| | - David R Wallace
- Department of Pharmacology, Oklahoma State University Center for Health Sciences, Tulsa, OK, United States
| | - Massimiliano Peana
- Department of Chemical, Physical, Mathematical and Natural Sciences, University of Sassari, Italy.
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Shao R, Su L, Wang P, Han X, Wang T, Dai J, Gu Y, Luo J, Deng L, Liu J. Higher cadmium exposure was associated with sex-specific thyroid dysfunction: Consistent evidence from two independent cross-sectional studies based on urinary and blood cadmium measurements. RESEARCH SQUARE 2023:rs.3.rs-3455102. [PMID: 37886500 PMCID: PMC10602156 DOI: 10.21203/rs.3.rs-3455102/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2023]
Abstract
Population-based studies on the association between cadmium (Cd) exposure and thyroid function are limited and have shown conflicting results. Two independent cross-sectional studies using different Cd biomarkers were carried out in six rural areas with different soil Cd levels in China. Thyroid dysfunction was defined based on levels of thyroid stimulating hormone (TSH) and free thyroxine (FT4). Both multivariable linear regression, multiple logistic regression and restrictive cubic splines models were used to estimate the association between Cd and thyroid dysfunction. For both of the two independent studies, higher Cd levels were observed to be associated with lower TSH levels and higher risk of thyroid dysfunction. The negative relationship between urinary Cd and TSH was found in both total participants (β = -0.072, p = 0.008) and males (β = -0.119, p = 0.020) but not in females, however, the negative relationship between blood Cd and TSH was only found in females (β = -0.104, p = 0.024). Higher urinary Cd (> 2.52 μg/g creatinine) was associated with higher risk of thyroid dysfunction, while higher blood Cd was associated with higher risk of hyperthyroidism status. The adjusted Odds Ratio (OR) for the risk of hyperthyroidism status was 3.48 (95%CI:1.36-8.92) and 6.94 (95%CI:1.23-39.31) times higher with every natural log unit higher in blood Cd in total participants and males, respectively. Results from the two independent cross-sectional studies consistently suggested that higher Cd levels were associated with sex-specific thyroid dysfunction.
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Affiliation(s)
- Ranqi Shao
- National Institute of Environmental Health, Chinese Center for Disease Control and Prevention
| | - Liqin Su
- National Institute of Environmental Health, Chinese Center for Disease Control and Prevention
| | | | - Xu Han
- National Institute of Environmental Health, Chinese Center for Disease Control and Prevention
| | - Ting Wang
- National Institute of Environmental Health, Chinese Center for Disease Control and Prevention
| | - Jun Dai
- Nanjing Agricultural University
| | - Yi Gu
- Nanjing Agricultural University
| | - Jiao Luo
- National Institute of Environmental Health, Chinese Center for Disease Control and Prevention
| | - Lifang Deng
- Yuhu Center for Disease Control and Prevention
| | - Jingping Liu
- Changde Center for Disease Control and Prevention
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Zhou L, Chen Y, Sun Y, Li N, Liu Y, Tan W, Zhang L. Cadmium induces apoptosis of mouse spermatocytes through JNK activation and disruption of autophagic flux. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 265:115505. [PMID: 37742578 DOI: 10.1016/j.ecoenv.2023.115505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Revised: 09/15/2023] [Accepted: 09/18/2023] [Indexed: 09/26/2023]
Abstract
Cadmium has been reported to accumulate primarily in spermatogonia and spermatocytes. Exposure to cadmium results in male reproductive toxicity via germ-cell apoptosis and impaired autophagy. Apoptosis and autophagy are two physiologically conserved events that maintain cellular homeostasis. However, the precise role of autophagy in cadmium-induced apoptosis of male germ cells has yet to be addressed. The present study aimed to investigate the impact of cadmium exposure on the cytotoxicity of GC-2 spd cells, a mouse spermatocyte cell line. The results showed that cadmium exposure caused apoptotic cell death and the accumulation of autophagosomes, along with the up-regulation of ATG proteins in GC-2 spd cells. It was demonstrated that the cadmium-induced accumulation of autophagosomes contributes to the apoptosis of GC-2 spd cells. This notion is supported by the findings that the autophagy inhibitor 3-MA reduced accumulation of autophagosomes and apoptotic cell death. Conversely, the apoptosis inhibitor Z-VAD-FMK inhibited apoptosis but had little effect on the accumulation of autophagosomes. Cadmium may impede the fusion of autophagosomes with lysosomes, leading to the autophagosome buildup. Additionally, we found that the JNK pathway mediates transcriptional induction of several autophagy-related (ATG) genes involved in autophagosome formation. The cadmium-activated JNK pathway regulates apoptosis by mediating the autophagosome formation. Treatment of cells with the JNK inhibitor SP600125 attenuated the accumulation of autophagosomes, the upregulated expression of autophagosome-associated proteins and apoptotic cell death induced by cadmium. Overall, these findings suggest that cadmium enhances apoptosis of GC-2 spd cells by activating the JNK pathway and inhibiting autophagic flux.
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Affiliation(s)
- Lin Zhou
- School of Public Health, Department of Environmental Health and Occupational Medicine, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Wuhan University of Science and Technology, Wuhan 430065, China
| | - Yong Chen
- Emergency Department, Taikang Tongji (Wuhan) Hospital, Wuhan 430050, China
| | - Yu Sun
- School of Public Health, Department of Environmental Health and Occupational Medicine, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Wuhan University of Science and Technology, Wuhan 430065, China
| | - Nayu Li
- School of Public Health, Department of Environmental Health and Occupational Medicine, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Wuhan University of Science and Technology, Wuhan 430065, China
| | - Yunhao Liu
- School of Public Health, Department of Environmental Health and Occupational Medicine, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Wuhan University of Science and Technology, Wuhan 430065, China
| | - Wei Tan
- Public Health Department, Geriatric Hospital Affiliated to Wuhan University of Science and Technology, Wuhan 430065, China.
| | - Ling Zhang
- School of Public Health, Department of Environmental Health and Occupational Medicine, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Wuhan University of Science and Technology, Wuhan 430065, China.
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Chen Y, Zhou C, Bian Y, Fu F, Zhu B, Zhao X, Zhang M, Zhou C, Yao S, Zhang Z, Luo H, Ge Y, Wu C, Ruan H. Cadmium exposure promotes thyroid pyroptosis and endocrine dysfunction by inhibiting Nrf2/Keap1 signaling. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 249:114376. [PMID: 36508821 DOI: 10.1016/j.ecoenv.2022.114376] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 11/26/2022] [Accepted: 11/29/2022] [Indexed: 06/17/2023]
Abstract
Cadmium (Cd) is a ubiquitous toxic metal and environmental pollutant. Increasing studies have shown that Cd exposure increases the incidence of various endocrine system diseases, including thyrotoxicity reflected by thyroid structural damage and endocrine toxicity. However, the observed outcomes are complex and conflicting, leading to the mechanism of Cd-induced thyrotoxicity remaining obscure. In this study, 4-week-old male C57BL/6 mice were given 2 or 7 mg/kg Cadmium Chloride (CdCl2) intragastrically for 4 and 8 weeks, and the Cd-mediated thyrotoxicity was evaluated by determining alterations in thyroid structure and endocrine function, and alterations of oxidant stress, apoptosis, and pyroptosis. Our data showed that Cd exposure could reduce body weight and induce thyrotoxicity by impairing thyroid follicular morphology and endocrine function, accompanied by elevated oxidative stress and apoptosis, macrophage infiltration, and inflammatory cytokine secretion. Importantly, Cd significantly promoted thyroid follicular cell pyroptosis by increasing Nlrp3, Asc, Caspase-1, Gsdmd, IL-1β, and IL-18 expression. Mechanistical analysis suggested that Cd treatment could inhibit antioxidant pathway by downregulating antioxidant response protein, Nrf2, and upregulating its negative feedback regulator, Keap1. Collectively, our in vivo findings suggest that Cd exposure could facilitate thyroid follicular cell pyroptosis by inhibiting Nrf2/Keap1 signaling, thereby disrupting thyroid tissue structure and endocrine function, which offers novel insights into the Cd-mediated detrimental consequences on thyroid homeostasis.
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Affiliation(s)
- Yuying Chen
- Institute of Orthopaedics and Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Zhejiang Provincial Hospital of Chinese Medicine, Hangzhou 310053, China; The Fourth Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Chengcong Zhou
- Institute of Orthopaedics and Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Zhejiang Provincial Hospital of Chinese Medicine, Hangzhou 310053, China
| | - Yishan Bian
- Institute of Orthopaedics and Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Zhejiang Provincial Hospital of Chinese Medicine, Hangzhou 310053, China
| | - Fangda Fu
- Institute of Orthopaedics and Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Zhejiang Provincial Hospital of Chinese Medicine, Hangzhou 310053, China
| | - Bian'an Zhu
- The Fourth Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Xuyan Zhao
- The Fourth Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Muxin Zhang
- Institute of Orthopaedics and Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Zhejiang Provincial Hospital of Chinese Medicine, Hangzhou 310053, China
| | - Chunyuan Zhou
- Institute of Orthopaedics and Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Zhejiang Provincial Hospital of Chinese Medicine, Hangzhou 310053, China
| | - Sai Yao
- Institute of Orthopaedics and Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Zhejiang Provincial Hospital of Chinese Medicine, Hangzhou 310053, China
| | - Zhiguo Zhang
- Institute of Orthopaedics and Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Zhejiang Provincial Hospital of Chinese Medicine, Hangzhou 310053, China
| | - Huan Luo
- Department of Pharmacy, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, China.
| | - Yuying Ge
- Institute of Orthopaedics and Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Zhejiang Provincial Hospital of Chinese Medicine, Hangzhou 310053, China
| | - Chengliang Wu
- Institute of Orthopaedics and Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Zhejiang Provincial Hospital of Chinese Medicine, Hangzhou 310053, China
| | - Hongfeng Ruan
- Institute of Orthopaedics and Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Zhejiang Provincial Hospital of Chinese Medicine, Hangzhou 310053, China.
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The mechanism of the cadmium-induced toxicity and cellular response in the liver. Toxicology 2022; 480:153339. [PMID: 36167199 DOI: 10.1016/j.tox.2022.153339] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 09/22/2022] [Accepted: 09/23/2022] [Indexed: 01/22/2023]
Abstract
Cadmium is a toxic element to which man can be exposed at work or in the environment. Cd's most salient toxicological property is its exceptionally long half-life in the human body. Once absorbed, Cd accumulates in the human body, particularly in the liver. The cellular actions of Cd are extensively documented, but the molecular mechanisms underlying these actions are still not resolved. The liver manages the cadmium to eliminate it by a diverse mechanism of action. Still, many cellular and physiological responses are executed in the task, leading to worse liver damage, ranging from steatosis, steatohepatitis, and eventually hepatocellular carcinoma. The progression of cadmium-induced liver damage is complex, and it is well-known the cellular response that depends on the time in which the metal is present, ranging from oxidative stress, apoptosis, adipogenesis, and failures in autophagy. In the present work, we aim to present a review of the current knowledge of cadmium toxicity and the cellular response in the liver.
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