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Mognetti B, Franco F, Castrignano C, Bovolin P, Berta GN. Mechanisms of Phytoremediation by Resveratrol against Cadmium Toxicity. Antioxidants (Basel) 2024; 13:782. [PMID: 39061851 PMCID: PMC11273497 DOI: 10.3390/antiox13070782] [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: 06/05/2024] [Revised: 06/24/2024] [Accepted: 06/26/2024] [Indexed: 07/28/2024] Open
Abstract
Cadmium (Cd) toxicity poses a significant threat to human health and the environment due to its widespread occurrence and persistence. In recent years, considerable attention has been directed towards exploring natural compounds with potential protective effects against Cd-induced toxicity. Among these compounds, resveratrol (RV) has emerged as a promising candidate, demonstrating a range of beneficial effects attributed to its antioxidant and anti-inflammatory properties. This literature review systematically evaluates the protective role of RV against Cd toxicity, considering the various mechanisms of action involved. A comprehensive analysis of both in vitro and in vivo studies is conducted to provide a comprehensive understanding of RV efficacy in mitigating Cd-induced damage. Additionally, this review highlights the importance of phytoremediation strategies in addressing Cd contamination, emphasizing the potential of RV in enhancing the efficiency of such remediation techniques. Through the integration of diverse research findings, this review underscores the therapeutic potential of RV in combating Cd toxicity and underscores the need for further investigation to elucidate its precise mechanisms of action and optimize its application in environmental and clinical settings.
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Affiliation(s)
- Barbara Mognetti
- Department of Life Sciences and Systems Biology, University of Turin, Via Accademia Albertina 13, 10123 Turin, Italy;
| | - Francesco Franco
- Department of Clinical and Biological Sciences, University of Turin, Regione Gonzole 10, 10043 Orbassano, Italy; (F.F.); (C.C.); (G.N.B.)
| | - Chiara Castrignano
- Department of Clinical and Biological Sciences, University of Turin, Regione Gonzole 10, 10043 Orbassano, Italy; (F.F.); (C.C.); (G.N.B.)
| | - Patrizia Bovolin
- Department of Life Sciences and Systems Biology, University of Turin, Via Accademia Albertina 13, 10123 Turin, Italy;
| | - Giovanni Nicolao Berta
- Department of Clinical and Biological Sciences, University of Turin, Regione Gonzole 10, 10043 Orbassano, Italy; (F.F.); (C.C.); (G.N.B.)
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2
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Ali Hussein M, Kamalakkannan A, Valinezhad K, Kannan J, Paleati N, Saad R, Kajdacsy-Balla A, Munirathinam G. The dynamic face of cadmium-induced Carcinogenesis: Mechanisms, emerging trends, and future directions. Curr Res Toxicol 2024; 6:100166. [PMID: 38706786 PMCID: PMC11068539 DOI: 10.1016/j.crtox.2024.100166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 03/18/2024] [Accepted: 04/03/2024] [Indexed: 05/07/2024] Open
Abstract
Cadmium (Cd) is a malleable element with odorless, tasteless characteristics that occurs naturally in the earth's crust, underground water, and soil. The most common reasons for the anthropological release of Cd to the environment include industrial metal mining, smelting, battery manufacturing, fertilizer production, and cigarette smoking. Cadmium-containing products may enter the environment as soluble salts, vapor, or particle forms that accumulate in food, soil, water, and air. Several epidemiological studies have highlighted the association between Cd exposure and adverse health outcomes, especially renal toxicity, and the impact of Cd exposure on the development and progression of carcinogenesis. Also highlighted is the evidence for early-life and even maternal exposure to Cd leading to devastating health outcomes, especially the risk of cancer development in adulthood. Several mechanisms have been proposed to explain how Cd mediates carcinogenic transformation, including epigenetic alteration, DNA methylation, histone posttranslational modification, dysregulated non-coding RNA, DNA damage in the form of DNA mutation, strand breaks, and chromosomal abnormalities with double-strand break representing the most common DNA form of damage. Cd induces an indirect genotoxic effect by reducing p53's DNA binding activity, eventually impairing DNA repair, inducing downregulation in the expression of DNA repair genes, which might result in carcinogenic transformation, enhancing lipid peroxidation or evasion of antioxidant interference such as catalase, superoxide dismutase, and glutathione. Moreover, Cd mediates apoptosis evasion, autophagy activation, and survival mechanisms. In this review, we decipher the role of Cd mediating carcinogenic transformation in different models and highlight the interaction between various mechanisms. We also discuss diagnostic markers, therapeutic interventions, and future perspectives.
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Affiliation(s)
- Mohamed Ali Hussein
- Department of Pharmaceutical Services, Children’s Cancer Hospital Egypt, 57357 Cairo, Egypt
- Institute of Global Health and Human Ecology (IGHHE), School of Sciences and Engineering, The American University in Cairo, New Cairo 11835, Egypt
| | - Abishek Kamalakkannan
- Department of Biomedical Sciences, College of Medicine, University of Illinois, Rockford, IL 61107, USA
| | - Kamyab Valinezhad
- Department of Biomedical Sciences, College of Medicine, University of Illinois, Rockford, IL 61107, USA
| | - Jhishnuraj Kannan
- Department of Biomedical Sciences, College of Medicine, University of Illinois, Rockford, IL 61107, USA
| | - Nikhila Paleati
- Department of Psychology and Neuroscience, College of Undergraduate Studies, Nova Southeastern University, Fort Lauderdale, FL 33328, USA
| | - Rama Saad
- Department of Hematology/Oncology, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - André Kajdacsy-Balla
- Department of Pathology, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Gnanasekar Munirathinam
- Department of Biomedical Sciences, College of Medicine, University of Illinois, Rockford, IL 61107, USA
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Kusak R, Nasiadek M, Stragierowicz J, Hanke W, Kilanowicz A. Changes in Endogenous Essential Metal Homeostasis in the Liver and Kidneys during a Six-Month Follow-Up Period after Subchronic Cadmium Exposure. Int J Mol Sci 2024; 25:3829. [PMID: 38612636 PMCID: PMC11011286 DOI: 10.3390/ijms25073829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 03/26/2024] [Accepted: 03/28/2024] [Indexed: 04/14/2024] Open
Abstract
Cadmium (Cd) is one of the most dangerous environmental pollutants. Its mechanism of action is multidirectional; among other things, it disrupts the balance of key essential elements. The aim of this study was to assess how cumulative exposure to Cd influences its interaction with selected essential elements (Cu, Zn, Ca, and Mg) in the kidney and liver during long-term observation (90 and 180 days) after subchronic exposure of rats (90 days) to Cd at common environmental (0.09 and 0.9 mg Cd/kg b.w.) and higher (1.8 and 4.5 mg Cd/kg b.w.) doses. Cd and essential elements were analyzed using the F-AAS and GF-AAS techniques. It was shown that the highest bioaccumulation of Cd in the kidney occurred six months after the end of exposure, and importantly, the highest accumulation was found after the lowest Cd dose (i.e., environmental exposure). Organ bioaccumulation of Cd (>21 μgCd/g w.w. in the kidney and >6 μgCd/g w.w. in the liver) was accompanied by changes in the other studied essential elements, particularly Cu in both the kidney and liver and Zn in the liver; these persisted for as long as six months after the end of the exposure. The results suggest that the critical concentration in human kidneys (40 μgCd/g w.w.), currently considered safe, may be too high and should be reviewed, as the observed long-term imbalance of Cu/Zn in the kidneys may lead to renal dysfunction.
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Affiliation(s)
- Rafał Kusak
- Medical Centers the Medici, 91-053 Lodz, Poland
| | - Marzenna Nasiadek
- Department of Toxicology, Medical University of Lodz, 90-151 Lodz, Poland; (J.S.); (A.K.)
| | - Joanna Stragierowicz
- Department of Toxicology, Medical University of Lodz, 90-151 Lodz, Poland; (J.S.); (A.K.)
| | - Wojciech Hanke
- Medical Informatics and Statistics Department, Medical University of Lodz, 90-419 Lodz, Poland;
| | - Anna Kilanowicz
- Department of Toxicology, Medical University of Lodz, 90-151 Lodz, Poland; (J.S.); (A.K.)
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4
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Alanazi ST, Harisa GI, Salama SA. Modulating SIRT1, Nrf2, and NF-κB signaling pathways by bergenin ameliorates the cadmium-induced nephrotoxicity in rats. Chem Biol Interact 2024; 387:110797. [PMID: 37949422 DOI: 10.1016/j.cbi.2023.110797] [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: 09/03/2023] [Revised: 10/30/2023] [Accepted: 11/06/2023] [Indexed: 11/12/2023]
Abstract
In light of the current industrial evolution, exposure to cadmium has become a significant public health concern. Cadmium accumulates in the renal tubular cells and causes nephrotoxicity largely through disruption of the redox homeostasis, induction of inflammation, and suppression of the histone deacetylase SIRT1 expression. The current work aimed at exploring the protective capability of bergenin, a naturally-occurring methyl gallic acid derivative, against the cadmium-evoked nephrotoxicity. Male Wistar rats were treated either with cadmium alone or with cadmium and bergenin for a 7-day experimental period followed by collection of kidney and blood specimens that were subjected to biochemical, molecular, and histological investigations. The results revealed the ability of bergenin to improve the renal functions in the cadmium-intoxicated rats as evidenced by increased glomerular filtration rate, and decreased serum creatinine and blood urea nitrogen. Equally important, bergenin reduced the renal tissue injury and enhanced its redox homeostasis as indicated by decreased protein expression of the kidney injury marker KIM-1, reduced lipid peroxidation, and improved antioxidant potential and histopathological picture of the renal tissues. Mechanistically, bergenin reduced the renal tissue cadmium content, markedly up-regulated protein expression of SIRT1 that regulates inflammation and the redox status of the renal tissues. Additionally, it improved the expression of the major antioxidant transcription factor Nrf2 and its responsive gene products heoxygenase-1 and NAD(P)H quinone dehydrogenase 1 in the cadmium-intoxicated rats. In the same context, bergenin down-regulated the acetylation and the nuclear translocation of the inflammatory transcription factor NF-κB and reduced levels of its responsive gene products TNF-α and IL-1β, as well as the activity of the inflammatory cell infiltration biomarker myeloperoxidase. Collectively, the current study underscores the ameliorating activity of bergenin against the cadmium-evoked nephrotoxicity and highlights modulation of SIRT1, Nrf2, and NF-κB signaling as potential underlining molecular mechanisms.
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Affiliation(s)
- Samyah T Alanazi
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, 11433, Saudi Arabia
| | - Gamaleldin I Harisa
- Kayyali Chair for Pharmaceutical Industries, Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia; Department of Biochemistry and Molecular Biology, Faculty of Pharmacy, Al-Azhar University, Cairo, 11751, Egypt.
| | - Samir A Salama
- Department of Biochemistry and Molecular Biology, Faculty of Pharmacy, Al-Azhar University, Cairo, 11751, Egypt; Division of Biochemistry, Department of Pharmacology, College of Pharmacy, Taif University, P.O. Box 11099, Taif, 21944, Saudi Arabia
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Freidin N, Hayes E, Struthers SA. Implications of climate change on acute kidney injury. Curr Opin Nephrol Hypertens 2024; 33:83-88. [PMID: 37678384 DOI: 10.1097/mnh.0000000000000926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/09/2023]
Abstract
PURPOSE OF REVIEW Climate change is an active and growing threat to human health. This review examines the evidence linking climate change to kidney diseases, with a focus on acute kidney injury (AKI). RECENT FINDINGS A growing body of evidence documents the adverse impact of various environmental and occupational exposures on kidney health. Extreme heat exposure increases the risk for AKI in vulnerable populations, particularly outdoor workers. These effects are being seen in both developed and developing nations, impacting equatorial as well as more northern climates. Climate change is also increasing the risk of water-borne and vector-borne infections, which are important causes of AKI in tropical regions. Due to overlapping environmental and social risk factors, populations in low-income and middle-income countries are likely to be disproportionately affected by climate-related health impacts, including heightened risk for kidney diseases. SUMMARY Climate change will adversely impact global kidney health over the course of the century through effects on temperature and risk of endemic infections. Alongside efforts to aggressively reduce carbon emissions, additional research is needed to guide public and environmental health policies aimed at mitigating the impact of climate change on human health.
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Affiliation(s)
- Natalie Freidin
- Medical University of South Carolina, Charleston, South Carolina
| | - Eily Hayes
- Medical University of South Carolina, Charleston, South Carolina
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Jiang Y, Li X, Zhang Y, Wu B, Li Y, Tian L, Sun J, Bai W. Mechanism of action of anthocyanin on the detoxification of foodborne contaminants-A review of recent literature. Compr Rev Food Sci Food Saf 2024; 23:e13259. [PMID: 38284614 DOI: 10.1111/1541-4337.13259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 10/09/2023] [Accepted: 10/13/2023] [Indexed: 01/30/2024]
Abstract
Foodborne contaminants refer to substances that are present in food and threaten food safety. Due to the progress in detection technology and the rising concerns regarding public health, there has been a surge in research focusing on the dangers posed by foodborne contaminants. These studies aim to explore and implement strategies that are both safe and efficient in mitigating the associated risks. Anthocyanins, a class of flavonoids, are abundantly present in various plant species, such as blueberries, grapes, purple sweet potatoes, cherries, mulberries, and others. Numerous epidemiological and nutritional intervention studies have provided evidence indicating that the consumption of anthocyanins through dietary intake offers a range of protective effects against the detrimental impact of foodborne contaminants. The present study aims to differentiate between two distinct subclasses of foodborne contaminants: those that are generated during the processing of food and those that originate from the surrounding environment. Furthermore, the impact of anthocyanins on foodborne contaminants was also summarized based on a review of articles published within the last 10 years. However, further investigation is warranted regarding the mechanism by which anthocyanins target foodborne contaminants, as well as the potential impact of individual variations in response. Additionally, it is important to note that there is currently a dearth of clinical research examining the efficacy of anthocyanins as an intervention for mitigating the effects of foodborne pollutants. Thus, by exploring the detoxification effect and mechanism of anthocyanins on foodborne pollutants, this review thereby provides evidence, supporting the utilization of anthocyanin-rich diets as a means to mitigate the detrimental effects of foodborne contaminants.
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Affiliation(s)
- Yan Jiang
- Department of Food Science and Engineering, Institute of Food Safety and Nutrition, Jinan University, Guangzhou, PR China
| | - Xusheng Li
- Department of Food Science and Engineering, Institute of Food Safety and Nutrition, Jinan University, Guangzhou, PR China
- The Sixth Affiliated Hospital, Jinan University, Dongguan, PR China
| | - Yulin Zhang
- Department of Food Science and Engineering, Institute of Food Safety and Nutrition, Jinan University, Guangzhou, PR China
| | - Biyu Wu
- Department of Human Nutrition, Food, and Animal Sciences, University of Hawaii at Manoa, Honolulu, Hawaii, USA
| | - Yuxi Li
- Department of Food Science and Engineering, Institute of Food Safety and Nutrition, Jinan University, Guangzhou, PR China
| | - Lingmin Tian
- Department of Food Science and Engineering, Institute of Food Safety and Nutrition, Jinan University, Guangzhou, PR China
| | - Jianxia Sun
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, PR China
| | - Weibin Bai
- Department of Food Science and Engineering, Institute of Food Safety and Nutrition, Jinan University, Guangzhou, PR China
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Sakuma S, Nogawa K, Watanabe Y, Sakurai M, Nishijo M, Ishizaki M, Morikawa Y, Kido T, Nakagawa H, Suwazono Y. Effect of renal tubular damage on non-cancer mortality in the general Japanese population living in cadmium non-polluted areas. J Appl Toxicol 2023; 43:1849-1858. [PMID: 37460094 DOI: 10.1002/jat.4518] [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: 04/12/2023] [Revised: 06/12/2023] [Accepted: 06/27/2023] [Indexed: 11/10/2023]
Abstract
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.
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Affiliation(s)
- Sayaka Sakuma
- Department of Occupational and Environmental Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Kazuhiro Nogawa
- Department of Occupational and Environmental Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Yuuka Watanabe
- Department of Occupational and Environmental Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Masaru Sakurai
- Department of Hygiene, Kanazawa Medical University, Ishikawa, Japan
| | - Muneko Nishijo
- Department of Public Health, Kanazawa Medical University, Ishikawa, Japan
| | - Masao Ishizaki
- Department of Hygiene, Kanazawa Medical University, Ishikawa, Japan
| | - Yuko Morikawa
- Department of Public Health, Kanazawa Medical University, Ishikawa, Japan
| | - Teruhiko Kido
- Department of Community Health Nursing, Kanazawa University School of Health Sciences, Ishikawa, Japan
| | - Hideaki Nakagawa
- Medical Research Institute, Kanazawa Medical University, Ishikawa, Japan
| | - Yasushi Suwazono
- Department of Occupational and Environmental Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan
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Smereczański NM, Brzóska MM, Rogalska J, Hutsch T. The Protective Potential of Aronia melanocarpa L. Berry Extract against Cadmium-Induced Kidney Damage: A Study in an Animal Model of Human Environmental Exposure to This Toxic Element. Int J Mol Sci 2023; 24:11647. [PMID: 37511414 PMCID: PMC10381010 DOI: 10.3390/ijms241411647] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 07/14/2023] [Accepted: 07/17/2023] [Indexed: 07/30/2023] Open
Abstract
The impact of cadmium (Cd) on the function and structure of the kidney and the potential protective effect of an extract from Aronia melanocarpa L. berries were investigated in a rat model of low- and moderate-level environmental exposure to this heavy metal (1 and 5 mg Cd/kg feed for up to 24 months). The sensitive biomarkers of Cd-induced damage to the kidney tubules (N-acetyl-β-D-glucosaminidase (NAG), alkaline phosphatase (ALP), β2-microglobulin (β2-MG), and kidney injury molecule-1 (KIM-1) in the urine), clinically relevant early markers of glomerular damage (albumin in the urine and creatinine clearance), and other markers of the general functional status of this organ (urea, uric acid, and total protein in the serum and/or urine) and Cd concentration in the urine, were evaluated. The morphological structure of the kidney and inflammatory markers (chemerin, macrophage inflammatory protein 1 alpha (MIP1a), and Bcl2-associated X protein (Bax)) were also estimated. Low-level and moderate exposure to Cd led to damage to the function and structure of the kidney tubules and glomeruli. The co-administration of A. melanocarpa berry extract significantly protected against the injurious impact of this toxic element. In conclusion, even low-level, long-term exposure to Cd poses a risk of kidney damage, whereas an intake of Aronia berry products may effectively protect from this outcome.
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Affiliation(s)
- Nazar M Smereczański
- Department of Toxicology, Medical University of Bialystok, Adama Mickiewicza 2C Street, 15-222 Bialystok, Poland
| | - Małgorzata M Brzóska
- Department of Toxicology, Medical University of Bialystok, Adama Mickiewicza 2C Street, 15-222 Bialystok, Poland
| | - Joanna Rogalska
- Department of Toxicology, Medical University of Bialystok, Adama Mickiewicza 2C Street, 15-222 Bialystok, Poland
| | - Tomasz Hutsch
- Department of Pathology and Veterinary Diagnostics, Institute of Veterinary Medicine, Warsaw University of Life Sciences, Nowoursynowska 159C Street, 02-776 Warsaw, Poland
- Veterinary Diagnostic Laboratory ALAB Bioscience, Stępińska 22/30 Street, 00-739 Warsaw, Poland
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Frosztega W, Wieckiewicz M, Gac P, Lachowicz G, Poreba R, Mazur G, Martynowicz H. The Effect of Cadmium on Sleep Parameters Assessed in Polysomnographic Studies: A Case-Control Study. J Clin Med 2023; 12:3899. [PMID: 37373594 DOI: 10.3390/jcm12123899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 05/31/2023] [Accepted: 06/06/2023] [Indexed: 06/29/2023] Open
Abstract
Cadmium is a heavy metal that accumulates in the body due to environmental and occupational exposure. The main form of environmental exposure to cadmium is related to cigarette smoking. The primary aim of this study was to evaluate the effect of cadmium on numerous sleep parameters with the use of polysomnography. The secondary aim of this study was to investigate if environmental exposure to cadmium is a risk factor for the intensity of sleep bruxism (SB). METHODS A total of 44 adults underwent a full night of polysomnographic examination. The polysomnograms were assessed according to guidelines set out by the American Academy of Sleep Medicine (AASM). The concentration of cadmium in the blood and urine was determined spectrophotometrically. RESULTS The polysomnographic examination confirmed that cadmium, age, male gender and smoking status are independent risk factors for an increase in the apnea-hypopnea index (AHI). Cadmium alters sleep architecture by favoring sleep fragmentation and decreasing the duration of the rapid eye movement (REM) phase of sleep. However, cadmium exposure is not a risk factor for the development of sleep bruxism. CONCLUSIONS In summary, this study demonstrates that cadmium affects sleep architecture and is a risk factor for the development of obstructive sleep apnea; however, it does not affect sleep bruxism.
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Affiliation(s)
- Weronika Frosztega
- Department of Internal Medicine, Occupational Diseases, Hypertension and Clinical Oncology, Wroclaw Medical University, 50-556 Wroclaw, Poland
- Student Research Club No K133, Faculty of Medicine, Wroclaw Medical University, 50-367 Wroclaw, Poland
| | - Mieszko Wieckiewicz
- Department of Experimental Dentistry, Wroclaw Medical University, 50-425 Wroclaw, Poland
| | - Pawel Gac
- Division of Environmental Health and Occupational Medicine, Department of Population Health, Wroclaw Medical University, 50-345 Wroclaw, Poland
| | - Gabriella Lachowicz
- Department of Internal Medicine, Occupational Diseases, Hypertension and Clinical Oncology, Wroclaw Medical University, 50-556 Wroclaw, Poland
| | - Rafal Poreba
- Department of Internal Medicine, Occupational Diseases, Hypertension and Clinical Oncology, Wroclaw Medical University, 50-556 Wroclaw, Poland
| | - Grzegorz Mazur
- Department of Internal Medicine, Occupational Diseases, Hypertension and Clinical Oncology, Wroclaw Medical University, 50-556 Wroclaw, Poland
| | - Helena Martynowicz
- Department of Internal Medicine, Occupational Diseases, Hypertension and Clinical Oncology, Wroclaw Medical University, 50-556 Wroclaw, Poland
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