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Zeng Q, Zhang A. Assessing potential mechanisms of arsenic-induced skin lesions and cancers: Human and in vitro evidence. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 260:113919. [PMID: 31995775 DOI: 10.1016/j.envpol.2020.113919] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 01/03/2020] [Accepted: 01/04/2020] [Indexed: 05/10/2023]
Abstract
Environmental exposure to arsenic is a major public health challenge worldwide. In detailing the hallmark signs of chronic arsenic exposure, previous studies have shown that epigenetic and immune dysfunction are associated with arsenic-induced skin lesions; however, knowledge regarding interactions between the mechanisms listed above is limited. In this study, a total of 106 skin samples were collected over the past 20 years. Based on the presence or absence of high arsenic exposure, the participants were divided into arsenic exposure (72) and reference (34) groups. Additionally, the arsenic exposure group was further divided into the non-cancer group (31, including skin hyperpigmentation and hyperkeratosis) and the skin cancer group (41, including Bowen's disease, basal cell carcinoma and squamous cell carcinoma) according to a skin histopathological examination. First, the associations among miR-155, NF-AT1 with immunological dysfunction and arsenic-induced skin lesions and carcinogenesis were confirmed using these skin samples. In the arsenic-exposed group, miR-155-5p, keratin 1(Krt1), keratin 10 (Krt10), and keratin 6c (Krt6c) were significantly increased in the skin (p < 0.05), while NF-AT1, interleukin-2 (IL-2), and interferon-γ (IFN-γ) were significantly decreased (p < 0.05). Clear correlations were observed among these factors (p < 0.05). In immortalized human keratinocytes, silencing and overexpression of NF-AT1 could alter the expression and secretion of immunological dysfunction indicators (IL-2 and IFN-γ) that are induced by arsenic exposure (p < 0.05); however, miR-155-5p levels did not change significantly (p > 0.05). The miR-155-5p mimic and inhibitor could regulate the NF-AT1-mediated immunological dysfunction caused by arsenic (p < 0.05). Our study provides some limited evidence that miR-155-5p regulates the NF-AT1-mediated immunological dysfunction that is involved in the pathogenesis and carcinogenesis of arsenic. The second major finding was that Krt1 and Krt10 are markers of hyperkeratosis caused by arsenic, and Krt6c is a potential biomarker that can reflect arsenic carcinogenesis.
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Affiliation(s)
- Qibing Zeng
- The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Department of Toxicology, Guizhou Medical University, Guiyang, 550025, China
| | - Aihua Zhang
- The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Department of Toxicology, Guizhou Medical University, Guiyang, 550025, China.
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Banerjee M, Ferragut Cardoso AP, Lykoudi A, Wilkey DW, Pan J, Watson WH, Garbett NC, Rai SN, Merchant ML, States JC. Arsenite Exposure Displaces Zinc from ZRANB2 Leading to Altered Splicing. Chem Res Toxicol 2020; 33:1403-1417. [PMID: 32274925 DOI: 10.1021/acs.chemrestox.9b00515] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Exposure to arsenic, a class I carcinogen, affects 200 million people globally. Skin is the major target organ, but the molecular etiology of arsenic-induced skin carcinogenesis remains unclear. Arsenite (As3+)-induced disruption of alternative splicing could be involved, but the mechanism is unknown. Zinc finger proteins play key roles in alternative splicing. As3+ can displace zinc (Zn2+) from C3H1 and C4 zinc finger motifs (zfm's), affecting protein function. ZRANB2, an alternative splicing regulator with two C4 zfm's integral to its structure and splicing function, was chosen as a candidate for this study. We hypothesized that As3+ could displace Zn2+ from ZRANB2, altering its structure, expression, and splicing function. As3+/Zn2+ binding and mutual displacement experiments were performed with synthetic apo-peptides corresponding to each ZRANB2 zfm, employing a combination of intrinsic fluorescence, ultraviolet spectrophotometry, zinc colorimetric assay, and liquid chromatography-tandem mass spectrometry. ZRANB2 expression in HaCaT cells acutely exposed to As3+ (0 or 5 μM, 0-72 h; or 0-5 μM, 6 h) was examined by RT-qPCR and immunoblotting. ZRANB2-dependent splicing of TRA2B mRNA, a known ZRANB2 target, was monitored by reverse transcription-polymerase chain reaction. As3+ bound to, as well as displaced Zn2+ from, each zfm. Also, Zn2+ displaced As3+ from As3+-bound zfm's acutely, albeit transiently. As3+ exposure induced ZRANB2 protein expression between 3 and 24 h and at all exposures tested but not ZRANB2 mRNA expression. ZRANB2-directed TRA2B splicing was impaired between 3 and 24 h post-exposure. Furthermore, ZRANB2 splicing function was also compromised at all As3+ exposures, starting at 100 nm. We conclude that As3+ exposure displaces Zn2+ from ZRANB2 zfm's, changing its structure and compromising splicing of its targets, and increases ZRANB2 protein expression as a homeostatic response both at environmental/toxicological exposures and therapeutically relevant doses.
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Affiliation(s)
- Mayukh Banerjee
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, Kentucky 40202, United States
| | - Ana P Ferragut Cardoso
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, Kentucky 40202, United States
| | - Angeliki Lykoudi
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, Kentucky 40202, United States
| | - Daniel W Wilkey
- Division of Nephrology & Hypertension, Department of Medicine, University of Louisville, Louisville, Kentucky 40202, United States
| | - Jianmin Pan
- Biostatistics and Bioinformatics Facility, James Graham Brown Cancer Center, University of Louisville, Louisville, Kentucky 40202, United States
| | - Walter H Watson
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, Kentucky 40202, United States.,Division of Gastroenterology, Hepatology and Nutrition, Department of Medicine, University of Louisville, Louisville, Kentucky 40202, United States
| | - Nichola C Garbett
- Division of Medical Oncology and Hematology, Department of Medicine, University of Louisville, Louisville, Kentucky 40202, United States.,James Graham Brown Cancer Center, University of Louisville, Louisville, Kentucky 40202, United States
| | - Shesh N Rai
- Biostatistics and Bioinformatics Facility, James Graham Brown Cancer Center, University of Louisville, Louisville, Kentucky 40202, United States.,Department of Bioinformatics and Biostatistics, University of Louisville, Louisville, Kentucky 40202, United States
| | - Michael L Merchant
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, Kentucky 40202, United States.,Division of Nephrology & Hypertension, Department of Medicine, University of Louisville, Louisville, Kentucky 40202, United States
| | - J Christopher States
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, Kentucky 40202, United States
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53
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Zhang AL, Chen L, Ma L, Ding XJ, Tang SF, Zhang AH, Li J. Role of H3K18ac-regulated nucleotide excision repair-related genes in arsenic-induced DNA damage and repair of HaCaT cells. Hum Exp Toxicol 2020; 39:1168-1177. [PMID: 32031413 DOI: 10.1177/0960327120903482] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Arsenic is an environmental poison and is a grade I human carcinogen that can cause many types of damage to the body. The skin is one of the main target organs of arsenic damage, but the molecular mechanisms underlying arsenic poisoning are not clear. Arsenic is an epigenetic agent. Histone acetylation is one of the earliest covalent modifications to be discovered and is closely related to the occurrence and development of tumors. To investigate the role of acetylated histone H3K18 (H3K18 ac) in arsenic-induced DNA damage, HaCaT cells were exposed to sodium arsenite (NaAsO2) for 24 h. It was found that arsenic induced the downregulation of xeroderma pigmentosum A, D, and F (XPA, XPD, and XPF-nucleotide excision repair (NER)-related genes) expression, as well as histone H3K18 ac expression, and aggravated DNA damage. Chromatin immunoprecipitation quantitative polymerase chain reaction (ChIP-qPCR) analysis showed that H3K18 acetylation in the promoter regions of XPA, XPD, and XPF was downregulated. In addition, the use of the histone deacetylase inhibitor trichostatin A (TSA) partially inhibited arsenic-induced DNA damage, inhibited deacetylation of H3K18 ac in the promoter regions of XPA, XPD, and XPF genes, increased acetylation of H3K18, and promoted the transcriptional expression of NER-related genes. Our study revealed that NaAsO2 induces DNA damage and inhibits the expression of NER-related genes, while TSA increases the H3K18 ac enrichment level and promotes the transcriptional expression of NER, thereby inhibiting DNA damage. These findings provide new ideas for understanding the molecular mechanisms underlying arsenic-induced skin damage.
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Affiliation(s)
- A L Zhang
- The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, School of Public Health, Guizhou Medical University, Guiyang, China
| | - L Chen
- The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, School of Public Health, Guizhou Medical University, Guiyang, China
| | - L Ma
- The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, School of Public Health, Guizhou Medical University, Guiyang, China
| | - X J Ding
- The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, School of Public Health, Guizhou Medical University, Guiyang, China
| | - S F Tang
- The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, School of Public Health, Guizhou Medical University, Guiyang, China
| | - A H Zhang
- The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, School of Public Health, Guizhou Medical University, Guiyang, China
| | - J Li
- The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, School of Public Health, Guizhou Medical University, Guiyang, China
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54
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Affiliation(s)
- Zhushan Fu
- Department of Environmental and Occupational Health, School of Public Health, China Medical University, Shenyang, China
| | - Shuhua Xi
- Department of Environmental and Occupational Health, School of Public Health, China Medical University, Shenyang, China
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55
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Arsenic exposure: A public health problem leading to several cancers. Regul Toxicol Pharmacol 2019; 110:104539. [PMID: 31765675 DOI: 10.1016/j.yrtph.2019.104539] [Citation(s) in RCA: 197] [Impact Index Per Article: 39.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 11/13/2019] [Accepted: 11/15/2019] [Indexed: 12/23/2022]
Abstract
Arsenic, a metalloid and naturally occurring element, is one of the most abundant elements in the earth's crust. Water is contaminated by arsenic through natural sources (underground water, minerals and geothermal processes) and anthropogenic sources such as mining, industrial processes, and the production and use of pesticides. Humans are exposed to arsenic mainly by drinking contaminated water, and secondarily through inhalation and skin contact. Arsenic exposure is associated with the development of vascular disease, including stroke, ischemic heart disease and peripheral vascular disease. Also, arsenic increases the risk of tumors of bladder, lungs, kidneys and liver, according to the International Agency for Research on Cancer and the Food and Drug Administration. Once ingested, an estimated 70-90% of inorganic arsenic is absorbed by the gastrointestinal tract and widely distributed through the blood to different organs, primarily to the liver, kidneys, lungs and bladder and secondarily to muscle and nerve tissue. Arsenic accumulates in the organs, especially in the liver. Its excretion mostly takes place through urination. The toxicokinetics of arsenic depends on the duration of exposure, pathway of ingestion, physicochemical characteristics of the compound, and affected biological species. The present review outlines of arsenic toxic effects focusing on different cancer types whit highest prevalence's by exposure to this metalloid and signaling pathways of carcinogenesis.
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56
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Chen Y, Liu X, Wang H, Liu S, Hu N, Li X. Akt Regulated Phosphorylation of GSK-3β/Cyclin D1, p21 and p27 Contributes to Cell Proliferation Through Cell Cycle Progression From G1 to S/G2M Phase in Low-Dose Arsenite Exposed HaCat Cells. Front Pharmacol 2019; 10:1176. [PMID: 31680960 PMCID: PMC6798184 DOI: 10.3389/fphar.2019.01176] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Accepted: 09/12/2019] [Indexed: 12/11/2022] Open
Abstract
Arsenic is a toxic environmental contaminant. Long-term exposure to arsenic through drinking water induces human cancers. However, it is as yet uncertain about the mechanisms of arsenic induced carcinogenesis. Although the effects of low-dose arsenicals on proliferation and cell cycle have been revealed by short time exposure, the evidences for long-term exposure were seldom reported. The detailed mechanism has been unclear and supplemented constantly. In the present study, we used normal human keratinocytes (HaCat) to study the effects of long-term, low-dose sodium arsenite (NaAsO2) exposure on cell proliferation with emphasis on the Akt regulated cell cycle signaling pathways. Treatment of NaAsO2 resulted in increased cell proliferation and promotion of cell cycle progression from G1 to S/G2M phase, both of which could be attenuated by MK2206, a highly selective inhibitor of Akt. Along with the increased expression of phospho-Akt (p-Akt, Ser 473), increased expression of p-GSK-3β (Ser 9), p-p21 (Thr 145), p-p27 (Thr 157) and total cyclin D1, and decreased expression of p-cyclin D1 (Thr 286), p21 and p27 were also found in the NaAsO2 exposed cells. Treatment of MK2206 markedly reversed the expression of all of the above proteins. Our findings indicated that the phosphorylated activation of Akt played a role in the proliferation of HaCat cells upon long-term, low-dose NaAsO2 exposure through the phosphorylative regulation of its downstream cell cycle regulating factors of GSK-3β/cyclin D1, p21 and p27, which could induce the promotion of cell cycle progression from G1 to S/G2M phase.
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Affiliation(s)
- Yao Chen
- Department of Occupational and Environmental Health, Key Laboratory of Arsenic-related Biological Effects and Prevention and Treatment in Liaoning Province, School of Public Health, China Medical University, Shenyang, China
| | - Xudan Liu
- Department of Occupational and Environmental Health, Key Laboratory of Arsenic-related Biological Effects and Prevention and Treatment in Liaoning Province, School of Public Health, China Medical University, Shenyang, China
| | - Huanhuan Wang
- Department of Occupational and Environmental Health, Key Laboratory of Arsenic-related Biological Effects and Prevention and Treatment in Liaoning Province, School of Public Health, China Medical University, Shenyang, China
| | - Shiyi Liu
- Department of Occupational and Environmental Health, Key Laboratory of Arsenic-related Biological Effects and Prevention and Treatment in Liaoning Province, School of Public Health, China Medical University, Shenyang, China
| | - Nannan Hu
- Department of Occupational and Environmental Health, Key Laboratory of Arsenic-related Biological Effects and Prevention and Treatment in Liaoning Province, School of Public Health, China Medical University, Shenyang, China
| | - Xin Li
- Department of Occupational and Environmental Health, Key Laboratory of Arsenic-related Biological Effects and Prevention and Treatment in Liaoning Province, School of Public Health, China Medical University, Shenyang, China
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57
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Al Hossain MMA, Yajima I, Tazaki A, Xu H, Saheduzzaman M, Ohgami N, Ahsan N, Akhand AA, Kato M. Chromium-mediated hyperpigmentation of skin in male tannery workers in Bangladesh. CHEMOSPHERE 2019; 229:611-617. [PMID: 31102916 DOI: 10.1016/j.chemosphere.2019.04.112] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 04/10/2019] [Accepted: 04/14/2019] [Indexed: 06/09/2023]
Abstract
Since tannery workers in developing countries are chronically exposed to high levels of chromium (Cr), there are serious concerns about health problems. However, there has been limited study in which Cr levels were measured in tannery workers, who are chronically exposed to Cr. Our preliminary inspection showed that there was hyperpigmented skin in tannery workers. We therefore investigated the correlation between skin pigmentation levels digitally evaluated as L* values by using a reflectance spectrophotometer and Cr levels in skin appendages in 100 male tannery workers and in 49 male non-tannery workers in Bangladesh. Digitalized skin pigmentation levels of the face and feet in addition to Cr levels in hair and toenails in tannery workers were significantly higher than those in non-tannery workers in our univariate analysis. Spearman's rank correlation coefficient analysis showed significant correlation between duration of tannery work (years) and Cr levels in hair (r = 0.62) and toenails (r = 0.61). Our multivariate analysis also showed that Cr levels in hair and toenails were significantly correlated with digitalized skin pigmentation levels of the face and feet in addition to duration of tannery work in all participants. Thus, our results showed the development of hyperpigmented skin in tannery workers. Our results also suggested that hyperpigmented skin could be a useful diagnostic marker for chronic exposure to Cr. Furthermore, cutaneous L* value might be a convenient marker for detection of chronic Cr poisoning, since the digitalized values enable objective evaluation of skin pigmented levels by general people as well as dermatologists.
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Affiliation(s)
- M M Aeorangajeb Al Hossain
- Department of Occupational and Environmental Health, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan; Voluntary Body for International Health Care in Universities, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan; Directorate General of Health Services, Ministry of Health and Family Welfare, Government of the People's Republic of Bangladesh, Mohakhali, Dhaka, 1212, Bangladesh
| | - Ichiro Yajima
- Department of Occupational and Environmental Health, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan; Voluntary Body for International Health Care in Universities, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan
| | - Akira Tazaki
- Department of Occupational and Environmental Health, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan; Voluntary Body for International Health Care in Universities, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan
| | - Huadong Xu
- Department of Occupational and Environmental Health, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan; Voluntary Body for International Health Care in Universities, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan
| | - Md Saheduzzaman
- Institute of Biological Sciences, University of Rajshahi, Rajshahi, 6205, Bangladesh
| | - Nobutaka Ohgami
- Department of Occupational and Environmental Health, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan; Voluntary Body for International Health Care in Universities, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan
| | - Nazmul Ahsan
- Voluntary Body for International Health Care in Universities, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan; Department of Genetic Engineering and Biotechnology, University of Dhaka, Dhaka, 1000, Bangladesh
| | - Anwarul Azim Akhand
- Voluntary Body for International Health Care in Universities, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan; Department of Genetic Engineering and Biotechnology, University of Dhaka, Dhaka, 1000, Bangladesh
| | - Masashi Kato
- Department of Occupational and Environmental Health, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan; Voluntary Body for International Health Care in Universities, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan.
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58
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Tchounwou PB, Yedjou CG, Udensi UK, Pacurari M, Stevens JJ, Patlolla AK, Noubissi F, Kumar S. State of the science review of the health effects of inorganic arsenic: Perspectives for future research. ENVIRONMENTAL TOXICOLOGY 2019; 34:188-202. [PMID: 30511785 PMCID: PMC6328315 DOI: 10.1002/tox.22673] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2018] [Revised: 10/06/2018] [Accepted: 10/09/2018] [Indexed: 05/06/2023]
Abstract
Human exposure to inorganic arsenic (iAs) is a global health issue. Although there is strong evidence for iAs-induced toxicity at higher levels of exposure, many epidemiological studies evaluating its effects at low exposure levels have reported mixed results. We comprehensively reviewed the literature and evaluated the scientific knowledge on human exposure to arsenic, mechanisms of action, systemic and carcinogenic effects, risk characterization, and regulatory guidelines. We identified areas where additional research is needed. These priority areas include: (1) further development of animal models of iAs carcinogenicity to identify molecular events involved in iAs carcinogenicity; (2) characterization of underlying mechanisms of iAs toxicity; (3) assessment of gender-specific susceptibilities and other factors that modulate arsenic metabolism; (4) sufficiently powered epidemiological studies to ascertain relationship between iAs exposure and reproductive/developmental effects; (5) evaluation of genetic/epigenetic determinants of iAs effects in children; and (6) epidemiological studies of people chronically exposed to low iAs concentrations.
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Affiliation(s)
- Paul B. Tchounwou
- Cellomics and Toxicogenomics Research Laboratory, NIH/NIMHD-RCMI Center for Environmental Health.Jackson State University, 1400 Lynch Street, Box18750, Jackson, Mississippi, MS 39217, USA
- Department of Biology, College of Science, Engineering and Technology, Jackson State University, 1400 Lynch Street, Box18750, Jackson, Mississippi, MS 39217, USA
| | - Clement G. Yedjou
- Department of Biology, College of Science, Engineering and Technology, Jackson State University, 1400 Lynch Street, Box18750, Jackson, Mississippi, MS 39217, USA
| | - Udensi K. Udensi
- Cellomics and Toxicogenomics Research Laboratory, NIH/NIMHD-RCMI Center for Environmental Health.Jackson State University, 1400 Lynch Street, Box18750, Jackson, Mississippi, MS 39217, USA
| | - Maricica Pacurari
- Department of Biology, College of Science, Engineering and Technology, Jackson State University, 1400 Lynch Street, Box18750, Jackson, Mississippi, MS 39217, USA
| | - Jacqueline J. Stevens
- Department of Biology, College of Science, Engineering and Technology, Jackson State University, 1400 Lynch Street, Box18750, Jackson, Mississippi, MS 39217, USA
| | - Anita K. Patlolla
- Department of Biology, College of Science, Engineering and Technology, Jackson State University, 1400 Lynch Street, Box18750, Jackson, Mississippi, MS 39217, USA
| | - Felicite Noubissi
- Department of Biology, College of Science, Engineering and Technology, Jackson State University, 1400 Lynch Street, Box18750, Jackson, Mississippi, MS 39217, USA
| | - Sanjay Kumar
- Cellomics and Toxicogenomics Research Laboratory, NIH/NIMHD-RCMI Center for Environmental Health.Jackson State University, 1400 Lynch Street, Box18750, Jackson, Mississippi, MS 39217, USA
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Mandal U, Singh P, Kundu AK, Chatterjee D, Nriagu J, Bhowmick S. Arsenic retention in cooked rice: Effects of rice type, cooking water, and indigenous cooking methods in West Bengal, India. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 648:720-727. [PMID: 30130735 DOI: 10.1016/j.scitotenv.2018.08.172] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 08/10/2018] [Accepted: 08/13/2018] [Indexed: 06/08/2023]
Abstract
This study evaluated the concentration of arsenic in paired raw and cooked rice prepared by individual households in arsenic-endemic rural area of West Bengal. The aim was to investigate how the cooking habits of rural villagers of West Bengal might influence the arsenic content of rice meals. It was found that the use of arsenic-rich groundwater for cooking could elevate the arsenic concentration in cooked rice (up to 129% above the raw sample), thereby enhancing the vulnerability of the rural population of West Bengal to arsenic exposure through rice consumption. The risk is heightened by the habit of drinking the stewed rice water (gruel) in the local communities. The cooking method employed, rice variety, background arsenic concentration in raw rice and cooking water arsenic concentration were found to be important predisposing factors that could affect the accumulation of arsenic in cooked form. The fundamental indigenous cooking practice followed by the villagers requires use of low-arsenic water for cooking as a necessary strategy to alleviate arsenic exposure in their staple food.
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Affiliation(s)
- Ujjal Mandal
- Department of Chemistry, University of Kalyani, Kalyani, Nadia, West Bengal 741235, India
| | - Payel Singh
- Department of Chemistry, University of Kalyani, Kalyani, Nadia, West Bengal 741235, India; Kolkata Zonal Center, CSIR-National Environmental Engineering Research Institute (NEERI), Kolkata, West Bengal 700107, India
| | - Amit Kumar Kundu
- Department of Chemistry, University of Kalyani, Kalyani, Nadia, West Bengal 741235, India
| | - Debashis Chatterjee
- Department of Chemistry, University of Kalyani, Kalyani, Nadia, West Bengal 741235, India.
| | - Jerome Nriagu
- Department of Environmental Health Sciences, School of Public Health, University of Michigan, 109 Observatory Street, Ann Arbor, MI 48109-2029, USA
| | - Subhamoy Bhowmick
- Kolkata Zonal Center, CSIR-National Environmental Engineering Research Institute (NEERI), Kolkata, West Bengal 700107, India.
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Li Y, He M, Chen B, Hu B. Inhibition of arsenite methylation induces synergistic genotoxicity of arsenite and benzo(a)pyrene diol epoxide in SCC-7 cells. Metallomics 2019; 11:176-182. [DOI: 10.1039/c8mt00217g] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A comprehensive analytical method was developed to investigate the synergistic genotoxicity of BPDE and As(iii) in SCC-7 cells.
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Affiliation(s)
- Youxian Li
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
- Department of Chemistry
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Man He
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
- Department of Chemistry
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Beibei Chen
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
- Department of Chemistry
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Bin Hu
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
- Department of Chemistry
- Wuhan University
- Wuhan 430072
- P. R. China
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Biomethylation metabolism study of arsenite in SCC-7 cells by reversed phase ion pair high performance liquid chromatography-inductively coupled plasma-mass spectrometry. Talanta 2018; 188:210-217. [DOI: 10.1016/j.talanta.2018.05.088] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 05/15/2018] [Accepted: 05/24/2018] [Indexed: 12/11/2022]
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Manthari RK, Tikka C, Ommati MM, Niu R, Sun Z, Wang J, Zhang J, Wang J. Arsenic-Induced Autophagy in the Developing Mouse Cerebellum: Involvement of the Blood-Brain Barrier's Tight-Junction Proteins and the PI3K-Akt-mTOR Signaling Pathway. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:8602-8614. [PMID: 30032600 DOI: 10.1021/acs.jafc.8b02654] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
This study was designed to determine whether the tight-junction (TJ) proteins of the blood-brain barrier (BBB) and the PI3K-Akt-mTOR signaling pathway are involved during arsenic (As)-induced autophagy in developing mouse cerebella after exposure to different As concentrations (0, 0.15, 1.5, and 15 mg/L As(III)) during gestational and lactational periods. The dosage was continually given to the pups until postnatal day (PND) 42. Studies conducted at different developmental age points, like PND21, 28, 35, and 42, showed that exposure to As led to a significant decrease in the mRNA-expression levels of TJ proteins (occludin, claudin, ZO-1, and ZO-2), PI3K, Akt, mTOR, and p62, with concomitant increases in Beclin1, LC3I, LC3II, Atg5, and Atg12. Also, As significantly downregulated occludin and mTOR protein-expression levels with concomitant upregulation of Beclin1, LC3, and Atg12 at all the developmental age points. However, no significant alterations were observed in low- and medium-dose-exposed groups at PND42. Histopathological analysis revealed the irregular arrangement of the Purkinje cell layer in the As-exposed mice. Ultrastructural analysis by transmission electron microscopy (TEM) revealed the occurrence of autophagosomes and vacuolated axons in the cerebella of the mice exposed to high doses of As at PND21 and 42, respectively. Finally, we conclude that developmental As exposure significantly alters TJ proteins, resulting an increase in BBB permeability, facilitating the ability of As to cross the BBB and induce autophagy, which might be partly the result of inhibition of the PI3K-Akt-mTOR signaling pathway, in an age-dependent manner (i.e., PND21 mice were found to be more vulnerable to As-induced neurotoxicity), which could be due to the immature BBB allowing As to cross through it. However, the effect was not significant in PND42, which could be due to the developed BBB.
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Affiliation(s)
- Ram Kumar Manthari
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Animal Science and Veterinary Medicine , Shanxi Agricultural University , Taigu , Shanxi 030801 , China
| | - Chiranjeevi Tikka
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Animal Science and Veterinary Medicine , Shanxi Agricultural University , Taigu , Shanxi 030801 , China
| | - Mohammad Mehdi Ommati
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Animal Science and Veterinary Medicine , Shanxi Agricultural University , Taigu , Shanxi 030801 , China
- Department of Animal Science, College of Agriculture , Shiraz University , Shiraz 71441-65186 , Iran
| | - Ruiyan Niu
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Animal Science and Veterinary Medicine , Shanxi Agricultural University , Taigu , Shanxi 030801 , China
| | - Zilong Sun
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Animal Science and Veterinary Medicine , Shanxi Agricultural University , Taigu , Shanxi 030801 , China
| | - Jinming Wang
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Animal Science and Veterinary Medicine , Shanxi Agricultural University , Taigu , Shanxi 030801 , China
| | - Jianhai Zhang
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Animal Science and Veterinary Medicine , Shanxi Agricultural University , Taigu , Shanxi 030801 , China
| | - Jundong Wang
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Animal Science and Veterinary Medicine , Shanxi Agricultural University , Taigu , Shanxi 030801 , China
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Lu JH, Liao WT, Lee CH, Chang KL, Ke HL, Yu HS. ΔNp63 promotes abnormal epidermal proliferation in arsenical skin cancers. Toxicol In Vitro 2018; 53:57-66. [PMID: 30026126 DOI: 10.1016/j.tiv.2018.07.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Revised: 06/19/2018] [Accepted: 07/15/2018] [Indexed: 01/03/2023]
Abstract
Arsenic is known to perturb epidermal homeostasis and induce abnormal keratinocyte proliferation, leading to skin carcinogenesis. P63 and its isoforms are essential to regulate epidermal homeostasis. This study aimed to investigate the role of p63 isoforms in abnormal epidermal proliferation induced by arsenic. Using arsenic-induced Bowen's disease (As-BD; an intraepidermal carcinoma) as a disease model, we found that in As-BD, the expression of proliferating basal keratinocytes marker cytokeratin 14 (CK14) and N-terminal truncated p63 isoform (ΔNp63; proliferation regulator) was increased, however, that of the differentiation marker cytokeratin 10 (CK10) and full-length p63 isoform (TAp63; differentiation regulator) was decreased in squamous cells as compared with healthy subjects. These observations were recapitulated in the arsenic-treated skin equivalents (SEs). The SEs showed that arsenic increased epidermal thickness, induced abnormal proliferation, and increased ΔNp63 expression in squamous cells as compared with the control. Treatment of cultured normal human epidermal keratinocytes (HKCs) with arsenic increased CK14 and △Np63 expressions, but decreased TAp63 and CK10 expressions. Furthermore, knockdown of ΔNp63 by RNA interference abrogated arsenic-induced CK14 expression and recovered the reduction of TAp63 and CK10 caused by arsenic. These findings indicated that ΔNp63 is a pivotal regulator in the abnormal cell proliferation in arsenical cancers.
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Affiliation(s)
- Jian-He Lu
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Wei-Ting Liao
- Department of Biotechnology, College of Life Science, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chih-Hung Lee
- Department of Dermatology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Kee-Lung Chang
- Department of Biochemistry, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Hung-Lung Ke
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Urology, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan; Department of Urology, School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Hsin-Su Yu
- Department of Dermatology, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan; Graduate Institute of Clinical Medicine, Faculty of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.
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Zhang C, Kibriya MG, Jasmine F, Roy S, Gao J, Sabarinathan M, Shinkle J, Delgado D, Ahmed A, Islam T, Eunus M, Islam MT, Hasan R, Graziano JH, Ahsan H, Pierce BL. A study of telomere length, arsenic exposure, and arsenic toxicity in a Bangladeshi cohort. ENVIRONMENTAL RESEARCH 2018; 164:346-355. [PMID: 29567420 PMCID: PMC6647858 DOI: 10.1016/j.envres.2018.03.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Revised: 03/02/2018] [Accepted: 03/03/2018] [Indexed: 06/01/2023]
Abstract
BACKGROUND Chronic arsenic exposure is associated with increased risk for arsenical skin lesions, cancer, and other adverse health outcomes. One potential mechanism of arsenic toxicity is telomere dysfunction. However, prior epidemiological studies of arsenic exposure, telomere length (TL), and skin lesion are small and cross-sectional. We investigated the associations between arsenic exposure and TL and between baseline TL and incident skin lesion risk among individuals participating in the Health Effects of Arsenic Longitudinal Study in Bangladesh (2000-2009). METHODS Quantitative PCR was used to measure the average TL of peripheral blood DNA collected at baseline. The association between baseline arsenic exposure (well water and urine) and TL was estimated in a randomly-selected subcohort (n = 1469). A nested case-control study (466 cases and 464 age- and sex-matched controls) was used to estimate the association between baseline TL and incident skin lesion risk (diagnosed < 8 years after baseline). RESULTS No association was observed between arsenic exposure (water or urine) and TL. Among incident skin lesion cases and matched controls, we observed higher skin lesion risk among individuals with shorter TL (Ptrend = 1.5 × 10-5) with odds ratios of 2.60, 1.59, and 1.10 for the first (shortest), second, and third TL quartiles compared to the fourth (longest). CONCLUSIONS Arsenic exposure was not associated with TL among Bangladeshi adults, suggesting that leukocyte TL may not reflect a primary mode of action for arsenic's toxicity. However, short TL was associated with increased skin lesion risk, and may be a biomarker of arsenic susceptibility modifying arsenic's effect on skin lesion risk.
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Affiliation(s)
- Chenan Zhang
- Department of Public Health Sciences, University of Chicago, Chicago, IL 60615, United States; Department of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, CA 94158, United States
| | - Muhammad G Kibriya
- Department of Public Health Sciences, University of Chicago, Chicago, IL 60615, United States
| | - Farzana Jasmine
- Department of Public Health Sciences, University of Chicago, Chicago, IL 60615, United States
| | - Shantanu Roy
- Department of Public Health Sciences, University of Chicago, Chicago, IL 60615, United States; Centers for Disease Control and Prevention, Atlanta, GA 30329, United States
| | - Jianjun Gao
- Department of Public Health Sciences, University of Chicago, Chicago, IL 60615, United States
| | - Mekala Sabarinathan
- Department of Public Health Sciences, University of Chicago, Chicago, IL 60615, United States
| | - Justin Shinkle
- Department of Public Health Sciences, University of Chicago, Chicago, IL 60615, United States
| | - Dayana Delgado
- Department of Public Health Sciences, University of Chicago, Chicago, IL 60615, United States
| | | | | | | | | | | | - Joseph H Graziano
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY 10032, United States
| | - Habibul Ahsan
- Department of Public Health Sciences, University of Chicago, Chicago, IL 60615, United States; Department of Human Genetics, University of Chicago, Chicago, IL 60615, United States; Comprehensive Cancer Center, University of Chicago, Chicago, IL 60615, United States; Department of Medicine, University of Chicago, Chicago, IL 60615, United States
| | - Brandon L Pierce
- Department of Public Health Sciences, University of Chicago, Chicago, IL 60615, United States; Department of Human Genetics, University of Chicago, Chicago, IL 60615, United States; Comprehensive Cancer Center, University of Chicago, Chicago, IL 60615, United States.
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Bhardwaj P, Jain K, Dhawan DK. Lithium Treatment Aggregates the Adverse Effects on Erythrocytes Subjected to Arsenic Exposure. Biol Trace Elem Res 2018; 184:206-213. [PMID: 28988373 DOI: 10.1007/s12011-017-1168-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Accepted: 09/25/2017] [Indexed: 10/18/2022]
Abstract
The present study was designed to investigate the effects of lithium treatment on red blood cells which were given arsenic exposure. Long-term lithium therapy is being extensively used for the treatment of bipolar disorders. Arsenic is a group I carcinogen and a major toxic pollutant in drinking water that affects millions of people worldwide. Male SD rats were segregated into four groups, viz. normal control, lithium treated, arsenic treated, and lithium + arsenic treated. Lithium was supplemented as lithium carbonate at a dose level of 1.1 g/kg diet for a period of 8 weeks. Arsenic was given in the form of sodium arsenite at a dose level of 100 ppm in drinking water, ad libitum, for the same period. Lysates of red blood cells were used to investigate the effects of lithium and arsenic treatments on anti-oxidant enzymes, reduced glutathione (GSH), and lipid peroxidation (LPO) levels. Various hematological parameters, activities of Na+ K+ ATPase and delta-aminolevulinic acid dehydratase (δ-ALAD) were also assessed. A significant reduction was observed in the activities of antioxidant enzymes, GSH levels, total erythrocyte counts, Na+ K+ ATPase, and ALAD enzyme activities in lysates of red blood cells when exposed either to lithium or arsenic. In addition, a significant increase in the levels of malondialdehyde (MDA), lymphocytes, neutrophils, and total leukocytes was also observed following lithium as well as arsenic treatments. However, when arsenic-treated rats were subjected to lithium treatment, a pronounced alteration was noticed in all the above parameters. Therefore, we conclude that lithium supplementation to the arsenic-treated rats enhances the adverse effects on red blood cells and therefore use of lithium may not be medicated to patients who are vulnerable to arsenic exposure through drinking water. It can also be inferred that adverse effects of lithium therapy may get aggravated in patients thriving in the arsenic-contaminated area.
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Affiliation(s)
- Priti Bhardwaj
- Department of Biophysics, Panjab University Chandigarh, Chandigarh, 160014, India
| | - Kinnri Jain
- Centre of Nuclear Medicine, Panjab University Chandigarh, Chandigarh, India
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Xiao T, Xue J, Shi M, Chen C, Luo F, Xu H, Chen X, Sun B, Sun Q, Yang Q, Dai X, Zhang A, Tang H, Liu Q. Circ008913,viamiR-889 regulation of DAB2IP/ZEB1, is involved in the arsenite-induced acquisition of CSC-like properties by human keratinocytes in carcinogenesis. Metallomics 2018; 10:1328-1338. [DOI: 10.1039/c8mt00207j] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Circ008913,viamiR-889 regulation of DAB2IP/ZEB1, is involved in the arsenite-induced acquisition of CSC-like properties and the neoplastic transformation.
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Liao WT, You HL, Chai CY, Lee CH, Lan CCE, Chang SJ, Yu CL, Yu HS. Cyclin D1 promoter -56 and -54bp CpG un-methylation predicts invasive progression in arsenic-induced Bowen's disease. J Dermatol Sci 2017; 89:191-197. [PMID: 29103775 DOI: 10.1016/j.jdermsci.2017.10.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Revised: 05/09/2017] [Accepted: 10/14/2017] [Indexed: 12/19/2022]
Abstract
BACKGROUND Patients with arsenic-induced Bowen's disease (As-BD) are at risk of developing invasive cancers in the skin, lung, and urinary bladder. However, a longitudinal follow-up study on the association between As-BD and invasive cancers is still lacking. OBJECTIVES This study aims to investigate the underlying molecular mechanisms of this malignant progression in the skin and internal organs. METHODS This is a biopsy-based follow-up study. We tested the DNA histograms, Cyclin D1 (CCND1) protein expression and CCND1 promoter DNA methylation in 40 pathologically confirmed specimens from As-BD patients to correlate with individual's invasive cancer occurrence in the 5-year follow-up. RESULTS Flow cytometric DNA histogram analysis of skin specimens showed aneuploid (n=15), G2/M arrest (n=22), and normal (n=3) DNA histograms. No patients with normal DNA histograms developed invasive cancers, whereas 13 developed invasive cancers in the aneuploid group and 2 developed invasive cancers in the G2/M arrest group. The aneuploid group showed a high risk of invasive cancer development. In all assessed aneuploid specimens, the CCND1 promoter hypomethylation was observed. Statistically, percentage of un-methylation more than 55.85% among 17 detected CpG sites showed extremely high predictive power in the occurrence of invasive arsenical cancers. Furthermore, the un-methylation at -56 and -54bp CpG sites was statistically significantly associated with invasive arsenical cancer development (p=1.29×10-5). CONCLUSIONS As-BD lesions showing an aneuploid DNA histogram had a high risk of invasive cancer development. Un-methyaltion at -56 and -54bp CpG in the CCND1 promoter serves as a predictor for invasive progression in As-BD patients.
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Affiliation(s)
- Wei-Ting Liao
- Department of Biotechnology, College of Life Science, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Biological Sciences, National Sun Yat-Sen University, Kaohsiung, Taiwan(c)Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan; Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Huey-Ling You
- Departments of Laboratory Medicine, Kaohsiung Chang Gung Memorial Hospital, Taiwan
| | - Chee-Yin Chai
- Department of Pathology, Kaohsiung Medical University and Hospital, Kaohsiung, Taiwan
| | - Chih-Hung Lee
- Department of Dermatology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Cheng-Che E Lan
- Department of Dermatology, Kaohsiung Medical University and Hospital, Kaohsiung, Taiwan
| | - Shun-Jen Chang
- Department of Kinesiology, Health and Leisure Studies, National University of Kaohsiung, Taiwan
| | - Chu-Ling Yu
- Taipei Cancer Center, Taipei Medical University Hospital, Taipei, Taiwan
| | - Hsin-Su Yu
- Department of Dermatology, Kaohsiung Medical University and Hospital, Kaohsiung, Taiwan; Graduate Institute of Clinical Medicine, Kaohsiung Medical University and Hospital, Kaohsiung, Taiwan; National Institute of Environmental Health Sciences, National Health Research Institutes, Zhunan, Taiwan.
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Kutny MA, Alonzo TA, Gerbing RB, Wang YC, Raimondi SC, Hirsch BA, Fu CH, Meshinchi S, Gamis AS, Feusner JH, Gregory JJ. Arsenic Trioxide Consolidation Allows Anthracycline Dose Reduction for Pediatric Patients With Acute Promyelocytic Leukemia: Report From the Children's Oncology Group Phase III Historically Controlled Trial AAML0631. J Clin Oncol 2017; 35:3021-3029. [PMID: 28767288 PMCID: PMC5590801 DOI: 10.1200/jco.2016.71.6183] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Purpose The Children's Oncology Group AAML0631 trial for newly diagnosed pediatric acute promyelocytic leukemia (APL) was a phase III historically controlled trial to determine the survival of patients receiving arsenic trioxide (ATO) consolidation and reduced doses of anthracyclines. Patients and Methods Patients age 2 to 21 years with de novo APL confirmed by PML-RARα polymerase chain reaction were stratified as standard risk (SR) or high risk (HR) on the basis of diagnostic WBC count. All patients received all-trans retinoic acid (ATRA) during induction, each consolidation course, and maintenance. All patients received two cycles of ATO therapy during consolidation 1, an additional two (SR) or three (HR) consolidation courses that included high-dose cytarabine and anthracycline, and maintenance therapy comprising ATRA, oral methotrexate, and mercaptopurine. Results One hundred one patients (66 SR and 35 HR) were evaluable for outcome. The 3-year overall survival was 94%, and event-free survival (EFS) was 91%. For SR and HR patients with APL, the overall survival was 98% versus 86% ( P = .003), and EFS was 95% versus 83% ( P = .03), respectively. The EFS for SR patients in AAML0631 was noninferior to that of patients in the AIDA 0493 historical control, which used a significantly higher anthracycline dose and did not include ATO consolidation. Relapse risk for patients in AAML0631 from end consolidation 1 (after ATO treatment) was only 4% at 3 years and did not differ significantly between SR and HR patients. Conclusion ATO consolidation cycles were well tolerated in pediatric patients with APL and allowed significant reduction in cumulative anthracycline doses while maintaining excellent survival and a low relapse risk for both SR and HR patients with APL.
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Affiliation(s)
- Matthew A. Kutny
- Matthew A. Kutny, University of Alabama at Birmingham, Birmingham, AL; Todd A. Alonzo, University of Southern California; Cecilia H. Fu, Children’s Hospital Los Angeles, Los Angeles; Robert B. Gerbing and Yi-Cheng Wang, Children’s Oncology Group, Monrovia; James H. Feusner, Children’s Hospital and Research Center Oakland, Oakland, CA; Susana C. Raimondi, St Jude Children’s Research Hospital, Memphis, TN; Betsy A. Hirsch, University of Minnesota Medical Center-Fairview, Minneapolis, MN; Soheil Meshinchi, Fred Hutchinson Cancer Research Center, Seattle, WA; Alan S. Gamis, Children’s Mercy Hospitals and Clinics, Kansas City, MO; and John J. Gregory Jr, Goryeb Children’s Hospital, Morristown, NJ
| | - Todd A. Alonzo
- Matthew A. Kutny, University of Alabama at Birmingham, Birmingham, AL; Todd A. Alonzo, University of Southern California; Cecilia H. Fu, Children’s Hospital Los Angeles, Los Angeles; Robert B. Gerbing and Yi-Cheng Wang, Children’s Oncology Group, Monrovia; James H. Feusner, Children’s Hospital and Research Center Oakland, Oakland, CA; Susana C. Raimondi, St Jude Children’s Research Hospital, Memphis, TN; Betsy A. Hirsch, University of Minnesota Medical Center-Fairview, Minneapolis, MN; Soheil Meshinchi, Fred Hutchinson Cancer Research Center, Seattle, WA; Alan S. Gamis, Children’s Mercy Hospitals and Clinics, Kansas City, MO; and John J. Gregory Jr, Goryeb Children’s Hospital, Morristown, NJ
| | - Robert B. Gerbing
- Matthew A. Kutny, University of Alabama at Birmingham, Birmingham, AL; Todd A. Alonzo, University of Southern California; Cecilia H. Fu, Children’s Hospital Los Angeles, Los Angeles; Robert B. Gerbing and Yi-Cheng Wang, Children’s Oncology Group, Monrovia; James H. Feusner, Children’s Hospital and Research Center Oakland, Oakland, CA; Susana C. Raimondi, St Jude Children’s Research Hospital, Memphis, TN; Betsy A. Hirsch, University of Minnesota Medical Center-Fairview, Minneapolis, MN; Soheil Meshinchi, Fred Hutchinson Cancer Research Center, Seattle, WA; Alan S. Gamis, Children’s Mercy Hospitals and Clinics, Kansas City, MO; and John J. Gregory Jr, Goryeb Children’s Hospital, Morristown, NJ
| | - Yi-Cheng Wang
- Matthew A. Kutny, University of Alabama at Birmingham, Birmingham, AL; Todd A. Alonzo, University of Southern California; Cecilia H. Fu, Children’s Hospital Los Angeles, Los Angeles; Robert B. Gerbing and Yi-Cheng Wang, Children’s Oncology Group, Monrovia; James H. Feusner, Children’s Hospital and Research Center Oakland, Oakland, CA; Susana C. Raimondi, St Jude Children’s Research Hospital, Memphis, TN; Betsy A. Hirsch, University of Minnesota Medical Center-Fairview, Minneapolis, MN; Soheil Meshinchi, Fred Hutchinson Cancer Research Center, Seattle, WA; Alan S. Gamis, Children’s Mercy Hospitals and Clinics, Kansas City, MO; and John J. Gregory Jr, Goryeb Children’s Hospital, Morristown, NJ
| | - Susana C. Raimondi
- Matthew A. Kutny, University of Alabama at Birmingham, Birmingham, AL; Todd A. Alonzo, University of Southern California; Cecilia H. Fu, Children’s Hospital Los Angeles, Los Angeles; Robert B. Gerbing and Yi-Cheng Wang, Children’s Oncology Group, Monrovia; James H. Feusner, Children’s Hospital and Research Center Oakland, Oakland, CA; Susana C. Raimondi, St Jude Children’s Research Hospital, Memphis, TN; Betsy A. Hirsch, University of Minnesota Medical Center-Fairview, Minneapolis, MN; Soheil Meshinchi, Fred Hutchinson Cancer Research Center, Seattle, WA; Alan S. Gamis, Children’s Mercy Hospitals and Clinics, Kansas City, MO; and John J. Gregory Jr, Goryeb Children’s Hospital, Morristown, NJ
| | - Betsy A. Hirsch
- Matthew A. Kutny, University of Alabama at Birmingham, Birmingham, AL; Todd A. Alonzo, University of Southern California; Cecilia H. Fu, Children’s Hospital Los Angeles, Los Angeles; Robert B. Gerbing and Yi-Cheng Wang, Children’s Oncology Group, Monrovia; James H. Feusner, Children’s Hospital and Research Center Oakland, Oakland, CA; Susana C. Raimondi, St Jude Children’s Research Hospital, Memphis, TN; Betsy A. Hirsch, University of Minnesota Medical Center-Fairview, Minneapolis, MN; Soheil Meshinchi, Fred Hutchinson Cancer Research Center, Seattle, WA; Alan S. Gamis, Children’s Mercy Hospitals and Clinics, Kansas City, MO; and John J. Gregory Jr, Goryeb Children’s Hospital, Morristown, NJ
| | - Cecilia H. Fu
- Matthew A. Kutny, University of Alabama at Birmingham, Birmingham, AL; Todd A. Alonzo, University of Southern California; Cecilia H. Fu, Children’s Hospital Los Angeles, Los Angeles; Robert B. Gerbing and Yi-Cheng Wang, Children’s Oncology Group, Monrovia; James H. Feusner, Children’s Hospital and Research Center Oakland, Oakland, CA; Susana C. Raimondi, St Jude Children’s Research Hospital, Memphis, TN; Betsy A. Hirsch, University of Minnesota Medical Center-Fairview, Minneapolis, MN; Soheil Meshinchi, Fred Hutchinson Cancer Research Center, Seattle, WA; Alan S. Gamis, Children’s Mercy Hospitals and Clinics, Kansas City, MO; and John J. Gregory Jr, Goryeb Children’s Hospital, Morristown, NJ
| | - Soheil Meshinchi
- Matthew A. Kutny, University of Alabama at Birmingham, Birmingham, AL; Todd A. Alonzo, University of Southern California; Cecilia H. Fu, Children’s Hospital Los Angeles, Los Angeles; Robert B. Gerbing and Yi-Cheng Wang, Children’s Oncology Group, Monrovia; James H. Feusner, Children’s Hospital and Research Center Oakland, Oakland, CA; Susana C. Raimondi, St Jude Children’s Research Hospital, Memphis, TN; Betsy A. Hirsch, University of Minnesota Medical Center-Fairview, Minneapolis, MN; Soheil Meshinchi, Fred Hutchinson Cancer Research Center, Seattle, WA; Alan S. Gamis, Children’s Mercy Hospitals and Clinics, Kansas City, MO; and John J. Gregory Jr, Goryeb Children’s Hospital, Morristown, NJ
| | - Alan S. Gamis
- Matthew A. Kutny, University of Alabama at Birmingham, Birmingham, AL; Todd A. Alonzo, University of Southern California; Cecilia H. Fu, Children’s Hospital Los Angeles, Los Angeles; Robert B. Gerbing and Yi-Cheng Wang, Children’s Oncology Group, Monrovia; James H. Feusner, Children’s Hospital and Research Center Oakland, Oakland, CA; Susana C. Raimondi, St Jude Children’s Research Hospital, Memphis, TN; Betsy A. Hirsch, University of Minnesota Medical Center-Fairview, Minneapolis, MN; Soheil Meshinchi, Fred Hutchinson Cancer Research Center, Seattle, WA; Alan S. Gamis, Children’s Mercy Hospitals and Clinics, Kansas City, MO; and John J. Gregory Jr, Goryeb Children’s Hospital, Morristown, NJ
| | - James H. Feusner
- Matthew A. Kutny, University of Alabama at Birmingham, Birmingham, AL; Todd A. Alonzo, University of Southern California; Cecilia H. Fu, Children’s Hospital Los Angeles, Los Angeles; Robert B. Gerbing and Yi-Cheng Wang, Children’s Oncology Group, Monrovia; James H. Feusner, Children’s Hospital and Research Center Oakland, Oakland, CA; Susana C. Raimondi, St Jude Children’s Research Hospital, Memphis, TN; Betsy A. Hirsch, University of Minnesota Medical Center-Fairview, Minneapolis, MN; Soheil Meshinchi, Fred Hutchinson Cancer Research Center, Seattle, WA; Alan S. Gamis, Children’s Mercy Hospitals and Clinics, Kansas City, MO; and John J. Gregory Jr, Goryeb Children’s Hospital, Morristown, NJ
| | - John J. Gregory
- Matthew A. Kutny, University of Alabama at Birmingham, Birmingham, AL; Todd A. Alonzo, University of Southern California; Cecilia H. Fu, Children’s Hospital Los Angeles, Los Angeles; Robert B. Gerbing and Yi-Cheng Wang, Children’s Oncology Group, Monrovia; James H. Feusner, Children’s Hospital and Research Center Oakland, Oakland, CA; Susana C. Raimondi, St Jude Children’s Research Hospital, Memphis, TN; Betsy A. Hirsch, University of Minnesota Medical Center-Fairview, Minneapolis, MN; Soheil Meshinchi, Fred Hutchinson Cancer Research Center, Seattle, WA; Alan S. Gamis, Children’s Mercy Hospitals and Clinics, Kansas City, MO; and John J. Gregory Jr, Goryeb Children’s Hospital, Morristown, NJ
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Kim TH, Seo JW, Hong YS, Song KH. Case-control study of chronic low-level exposure of inorganic arsenic species and non-melanoma skin cancer. J Dermatol 2017; 44:1374-1379. [DOI: 10.1111/1346-8138.13993] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2017] [Accepted: 06/27/2017] [Indexed: 12/01/2022]
Affiliation(s)
- Tae-Hoon Kim
- Department of Dermatology; College of Medicine; Dong-A University; Busan Korea
| | - Jeong-Wook Seo
- Department of Preventive Medicine and Dong-A University Heavy Metal Exposure Environmental Health Center; College of Medicine; Dong-A University; Busan Korea
| | - Young-Seoub Hong
- Department of Preventive Medicine and Dong-A University Heavy Metal Exposure Environmental Health Center; College of Medicine; Dong-A University; Busan Korea
| | - Ki-Hoon Song
- Department of Dermatology; College of Medicine; Dong-A University; Busan Korea
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Low dose arsenite confers resistance to UV induced apoptosis via p53-MDM2 pathway in ketatinocytes. Oncogenesis 2017; 6:e370. [PMID: 28785074 PMCID: PMC5608918 DOI: 10.1038/oncsis.2017.67] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 06/17/2017] [Accepted: 06/26/2017] [Indexed: 12/17/2022] Open
Abstract
Chronic arsenite and ultraviolet (UV) exposure are associated with skin tumor. To investigate the details by low concentrations of arsenite and UV induced carcinogenesis in skin, hTERT-immortalized human keratinocytes were used as a cellular model with exposure to low concentrations of sodium arsenite and UV. The effect of NaAsO2 on UV treatment-induced apoptosis was measured by flow cytometry and Hoechst staining. We found that the cell apoptosis induced by UV exposure was significantly attenuated after exposure to low-dose arsenite, and knockdown of p53 could block UV-induced apoptosis indicating that this phenomenon depended on p53. Interestingly, the expression of murine double minute 2 (MDM2), including its protein and transcriptional levels, was remarkably high after exposure to low-dose arsenite. Moreover, low-dose arsenite treatment dramatically decreased the MDM2 gene promoter activity, suggesting that this effect has been mediated through transcription. In addition, treatment of PD98059 reversed low-dose arsenite-induced MDM2 expression, and the inhibition of ERK2 expression could significantly block MDM2 expression as a consequence, and p53 expression automatically was increased. To validate the role of p53 in exposure to low-dose arsenite, the expression of p53 was examined by immunohistochemistry in the skin of Sprague−Dawley rats model by chronic arsenite exposure for 6 months and in patients with arsenic keratosis, and the results showed that the expression of p53 was decreased in those samples. Taken together, our results demonstrated that low-dose arsenite-induced resistance to apoptosis through p53 mediated by MDM2 in keratinocytes.
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71
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[Arsenic pesticides as an uncommon cause of basal cell carcinoma in an octogenarian patient]. Rev Esp Geriatr Gerontol 2017; 53:56-57. [PMID: 28711225 DOI: 10.1016/j.regg.2017.05.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Accepted: 05/04/2017] [Indexed: 11/20/2022]
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72
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Luz AL, Godebo TR, Smith LL, Leuthner TC, Maurer LL, Meyer JN. Deficiencies in mitochondrial dynamics sensitize Caenorhabditis elegans to arsenite and other mitochondrial toxicants by reducing mitochondrial adaptability. Toxicology 2017; 387:81-94. [PMID: 28602540 PMCID: PMC5535741 DOI: 10.1016/j.tox.2017.05.018] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2017] [Revised: 05/10/2017] [Accepted: 05/30/2017] [Indexed: 01/06/2023]
Abstract
Mitochondrial fission, fusion, and mitophagy are interlinked processes that regulate mitochondrial shape, number, and size, as well as metabolic activity and stress response. The fundamental importance of these processes is evident in the fact that mutations in fission (DRP1), fusion (MFN2, OPA1), and mitophagy (PINK1, PARK2) genes can cause human disease (collectively >1/10,000). Interestingly, however, the age of onset and severity of clinical manifestations varies greatly between patients with these diseases (even those harboring identical mutations), suggesting a role for environmental factors in the development and progression of certain mitochondrial diseases. Using the model organism Caenorhabditis elegans, we screened ten mitochondrial toxicants (2, 4-dinitrophenol, acetaldehyde, acrolein, aflatoxin B1, arsenite, cadmium, cisplatin, doxycycline, paraquat, rotenone) for increased or decreased toxicity in fusion (fzo-1, eat-3)-, fission (drp-1)-, and mitophagy (pdr-1, pink-1)-deficient nematodes using a larval growth assay. In general, fusion-deficient nematodes were the most sensitive to toxicants, including aflatoxin B1, arsenite, cisplatin, paraquat, and rotenone. Because arsenite was particularly potent in fission- and fusion-deficient nematodes, and hundreds of millions of people are chronically exposed to arsenic, we investigated the effects of these genetic deficiencies on arsenic toxicity in more depth. We found that deficiencies in fission and fusion sensitized nematodes to arsenite-induced lethality throughout aging. Furthermore, low-dose arsenite, which acted in a "mitohormetic" fashion by increasing mitochondrial function (in particular, basal and maximal oxygen consumption) in wild-type nematodes by a wide range of measures, exacerbated mitochondrial dysfunction in fusion-deficient nematodes. Analysis of multiple mechanistic changes suggested that disruption of pyruvate metabolism and Krebs cycle activity underlie the observed arsenite-induced mitochondrial deficits, and these disruptions are exacerbated in the absence of mitochondrial fusion. This research demonstrates the importance of mitochondrial dynamics in limiting arsenite toxicity by permitting mitochondrial adaptability. It also suggests that individuals suffering from deficiencies in mitodynamic processes may be more susceptible to the mitochondrial toxicity of arsenic and other toxicants.
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Affiliation(s)
- Anthony L Luz
- Nicholas School of the Environment, Box 90328, Duke University, Durham, NC, 27708, USA
| | - Tewodros R Godebo
- Nicholas School of the Environment, Box 90328, Duke University, Durham, NC, 27708, USA
| | - Latasha L Smith
- Nicholas School of the Environment, Box 90328, Duke University, Durham, NC, 27708, USA
| | - Tess C Leuthner
- Nicholas School of the Environment, Box 90328, Duke University, Durham, NC, 27708, USA
| | - Laura L Maurer
- ExxonMobil Biomedical Sciences, Inc., Annandale, NJ, 08801-3059, USA
| | - Joel N Meyer
- Nicholas School of the Environment, Box 90328, Duke University, Durham, NC, 27708, USA.
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73
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[Warning of a resistant psoriasis; looking beyond the usual]. Semergen 2017; 43:521-523. [PMID: 28511882 DOI: 10.1016/j.semerg.2017.01.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Revised: 01/24/2017] [Accepted: 01/25/2017] [Indexed: 11/21/2022]
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74
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Wang D, Shimoda Y, Wang S, Wang Z, Liu J, Liu X, Jin H, Gao F, Tong J, Yamanaka K, Zhang J, An Y. Total arsenic and speciation analysis of saliva and urine samples from individuals living in a chronic arsenicosis area in China. Environ Health Prev Med 2017; 22:45. [PMID: 29165156 PMCID: PMC5664814 DOI: 10.1186/s12199-017-0652-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Accepted: 04/20/2017] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND It is generally acknowledged that the determination of harmful chemical compounds excreted into saliva is useful for assessing their exposure levels. The aim of the present study was to compare the total arsenic and its species in saliva and urine samples collected from the people residing in an arsenic-contaminated area of China and to further verify the feasibility of using salivary arsenic as a new biomarker of arsenic exposure. METHODS Total arsenic and speciation analyses in urine and saliva samples among 70 residents exposed to arsenic from drinking water in Shanxi, China were carried out by high-performance liquid chromatography-inductively coupled plasma-mass spectrometry (HPLC-ICP/MS). RESULTS The result showed that, total arsenic concentration in saliva was relatively lower than in urine samples, but it existed a strong positive correlation with total urinary arsenic, drinking water arsenic and different skin lesions. For arsenic metabolism analyses, AsIII, AsV, MMA, and DMA were detected in all of the urine samples with the dominating species of DMA (73.2%). Different with urinary arsenic species, most arsenic species in saliva were not methylated. The major species in saliva was iAs (AsIII + AsV, 76.18%), followed by DMA (13.08%) and MMA (9.13%). And the primary methylation index (PMI), second methylation index (SMI) and proportion of the four different species (AsIII, AsV, MMA, and DMA) in saliva showed no significant positive relationship with that of in urine. CONCLUSIONS These findings indicated saliva may be used as a useful tool for biological monitoring of total arsenic exposure in the crowd rather than an efficient tool for assessing arsenic metabolism in human body after exposed to arsenic.
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Affiliation(s)
- Dapeng Wang
- Department of Toxicology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Medical College of Soochow University, Suzhou, Jiangsu, 215123, People's Republic of China
- Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Department of Toxicology, School of Public Health, Guizhou Medical University, Guiyang, Guizhou, China
| | - Yasuyo Shimoda
- Laboratory of Environmental Toxicology and Carcinogenesis, School of Pharmacy, Nihon University, Chiba, Japan
| | - Sanxiang Wang
- Shanxi Institute for Prevention and Treatment of Endemic Disease, Linfen, Shanxi, People's Republic of China
| | - Zhenghui Wang
- Shanxi Institute for Prevention and Treatment of Endemic Disease, Linfen, Shanxi, People's Republic of China
| | - Jian Liu
- Department of Toxicology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Medical College of Soochow University, Suzhou, Jiangsu, 215123, People's Republic of China
| | - Xing Liu
- Department of Toxicology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Medical College of Soochow University, Suzhou, Jiangsu, 215123, People's Republic of China
| | - Huanyu Jin
- Department of Toxicology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Medical College of Soochow University, Suzhou, Jiangsu, 215123, People's Republic of China
| | - Fenfang Gao
- Department of Toxicology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Medical College of Soochow University, Suzhou, Jiangsu, 215123, People's Republic of China
| | - Jian Tong
- Department of Toxicology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Medical College of Soochow University, Suzhou, Jiangsu, 215123, People's Republic of China
| | - Kenzo Yamanaka
- Laboratory of Environmental Toxicology and Carcinogenesis, School of Pharmacy, Nihon University, Chiba, Japan
| | - Jie Zhang
- Department of Toxicology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Medical College of Soochow University, Suzhou, Jiangsu, 215123, People's Republic of China.
| | - Yan An
- Department of Toxicology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Medical College of Soochow University, Suzhou, Jiangsu, 215123, People's Republic of China.
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75
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Khairul I, Wang QQ, Jiang YH, Wang C, Naranmandura H. Metabolism, toxicity and anticancer activities of arsenic compounds. Oncotarget 2017; 8:23905-23926. [PMID: 28108741 PMCID: PMC5410354 DOI: 10.18632/oncotarget.14733] [Citation(s) in RCA: 185] [Impact Index Per Article: 26.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Accepted: 01/11/2017] [Indexed: 01/17/2023] Open
Abstract
A variety of studies indicated that inorganic arsenic and its methylated metabolites have paradoxical effects, namely, carcinogenic and anticancer effects. Epidemiological studies have shown that long term exposure to arsenic can increase the risk of cancers of lung, skin or bladder in man, which is probably associated with the arsenic metabolism. In fact, the enzymatic conversion of inorganic arsenic by Arsenic (+3 oxidation state) methyltransferase (AS3MT) to mono- and dimethylated arsenic species has long been considered as a major route for detoxification. However, several studies have also indicated that biomethylation of inorganic arsenic, particularly the production of trivalent methylated metabolites, is a process that activates arsenic as a toxin and a carcinogen. On the other hand, arsenic trioxide (As2O3) has recently been recognized as one of the most effective drugs for the treatment of APL. However, elaboration of the cytotoxic mechanisms of arsenic and its methylated metabolites in eradicating cancer is sorely lacking. To provide a deeper understanding of the toxicity and carcinogenicity along with them use of arsenic in chemotherapy, caution is required considering the poor understanding of its various mechanisms of exerting toxicity. Thereby, in this review, we have focused on arsenic metabolic pathway, the roles of the methylated arsenic metabolites in toxicity and in the therapeutic efficacy for the treatments of solid tumors, APL and/or non-APL malignancies.
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Affiliation(s)
- Islam Khairul
- Department of Toxicology, School of Medicine and Public Health, Zhejiang University, Hangzhou, China
| | - Qian Qian Wang
- Department of Toxicology, School of Medicine and Public Health, Zhejiang University, Hangzhou, China
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
| | - Yu Han Jiang
- Department of Toxicology, School of Medicine and Public Health, Zhejiang University, Hangzhou, China
- Ocean College, Zhejiang University, Hangzhou, China
| | - Chao Wang
- Department of Toxicology, School of Medicine and Public Health, Zhejiang University, Hangzhou, China
| | - Hua Naranmandura
- Department of Toxicology, School of Medicine and Public Health, Zhejiang University, Hangzhou, China
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
- Ocean College, Zhejiang University, Hangzhou, China
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76
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Hartmann D, Ruzicka T, Flaig MJ, Antal AS. [Giant carcinoma of the face in the elderly - Hikikomori senectorum]. MMW Fortschr Med 2017; 159:56-58. [PMID: 28321723 DOI: 10.1007/s15006-017-9392-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Daniela Hartmann
- Klinik und Poliklinik für Dermatologie und Allergologie der LMU München, Frauenlobstraße 9-11, D-80337, München, Deutschland.
| | - Thomas Ruzicka
- Klinik und Poliklinik für Dermatologie und Allergologie der Ludwig-Maximilians-Universität München, München, Deutschland
| | - Michael J Flaig
- Klinik und Poliklinik für Dermatologie und Allergologie der Ludwig-Maximilians-Universität München, München, Deutschland
| | - Attila S Antal
- Klinik und Poliklinik für Dermatologie und Allergologie der Ludwig-Maximilians-Universität München, München, Deutschland
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77
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Damian DL. Nicotinamide for skin cancer chemoprevention. Australas J Dermatol 2017; 58:174-180. [PMID: 28321860 DOI: 10.1111/ajd.12631] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Accepted: 01/11/2017] [Indexed: 12/14/2022]
Abstract
Nicotinamide (vitamin B3 ) has a range of photoprotective effects in vitro and in vivo; it enhances DNA repair, reduces UV radiation-induced suppression of skin immune responses, modulates inflammatory cytokine production and skin barrier function and restores cellular energy levels after UV exposure. Pharmacological doses of nicotinamide have been shown to reduce actinic keratoses and nonmelanoma skin cancer incidence in high-risk individuals, making this a nontoxic and accessible option for skin cancer chemoprevention in this population.
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Affiliation(s)
- Diona L Damian
- Discipline of Dermatology, Central Clinical School, University of Sydney at Royal Prince Alfred Hospital and Melanoma Institute Australia, Sydney, Australia
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78
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Chayapong J, Madhyastha H, Madhyastha R, Nurrahmah QI, Nakajima Y, Choijookhuu N, Hishikawa Y, Maruyama M. Arsenic trioxide induces ROS activity and DNA damage, leading to G0/G1 extension in skin fibroblasts through the ATM-ATR-associated Chk pathway. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:5316-5325. [PMID: 28013460 DOI: 10.1007/s11356-016-8215-7] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Accepted: 12/06/2016] [Indexed: 06/06/2023]
Abstract
Arsenic (As) toxicity is a global health problem, affecting millions of people. Exposure to arsenic, mostly via drinking water, has been associated with cancer of skin, lungs, and blood, in addition to several kinds of skin lesions. The present study focused on the effect of arsenic trioxide (As2O3) on normal skin fibroblast cells. Specifically, the effect of As2O3 on ROS generation and oxidative stress was investigated. Proteins involved in the DNA damage signaling pathway and cell cycle were also studied. As2O3 induced the generation of intracellular ROS. Immunohistochemistry analysis revealed a dose-dependent increase in the number of 8-OHdG-positive cells, an indication of oxidative stress. Cell cycle analysis by flow cytometry demonstrated that As2O3 caused a significant percentage of cells to accumulate in the G0/G1 phase with a concomitant reduction in the S phase. Increases in the activated forms of DNA damage signaling proteins, ATM and ATR, and their effector molecules, Chk2 and p53, were also observed. In addition, expression of oncogene p21 was also increased. The study shows that exposure of normal skin fibroblast cells to As2O3 could lead to cell cycle arrest through ATM/ATR and DNA damage signaling pathways. In conclusion, we report here that arsenic trioxide increases cellular oxidative stress leading to shift in cell cycle and leads to DNA damage through ATM/ATR and the CHK-dependent signaling pathway.
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Affiliation(s)
- Jutapon Chayapong
- Department of Applied Physiology, Faculty of Medicine, University of Miyazaki, Miyazaki, 889-1692, Japan
| | - Harishkumar Madhyastha
- Department of Applied Physiology, Faculty of Medicine, University of Miyazaki, Miyazaki, 889-1692, Japan
| | - Radha Madhyastha
- Department of Applied Physiology, Faculty of Medicine, University of Miyazaki, Miyazaki, 889-1692, Japan
| | - Queen Intan Nurrahmah
- Department of Applied Physiology, Faculty of Medicine, University of Miyazaki, Miyazaki, 889-1692, Japan
| | - Yuichi Nakajima
- Department of Applied Physiology, Faculty of Medicine, University of Miyazaki, Miyazaki, 889-1692, Japan
| | - Narantsog Choijookhuu
- Department of Anatomy, Histochemistry and Cell Biology, Faculty of Medicine, University of Miyazaki, Miyazaki, 889-1692, Japan
| | - Yoshitaka Hishikawa
- Department of Anatomy, Histochemistry and Cell Biology, Faculty of Medicine, University of Miyazaki, Miyazaki, 889-1692, Japan
| | - Masugi Maruyama
- Department of Applied Physiology, Faculty of Medicine, University of Miyazaki, Miyazaki, 889-1692, Japan.
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Arsenite Effects on Mitochondrial Bioenergetics in Human and Mouse Primary Hepatocytes Follow a Nonlinear Dose Response. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:9251303. [PMID: 28163822 PMCID: PMC5253485 DOI: 10.1155/2017/9251303] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Revised: 11/10/2016] [Accepted: 11/20/2016] [Indexed: 01/27/2023]
Abstract
Arsenite is a known carcinogen and its exposure has been implicated in a variety of noncarcinogenic health concerns. Increased oxidative stress is thought to be the primary cause of arsenite toxicity and the toxic effect is thought to be linear with detrimental effects reported at all concentrations of arsenite. But the paradigm of linear dose response in arsenite toxicity is shifting. In the present study we demonstrate that arsenite effects on mitochondrial respiration in primary hepatocytes follow a nonlinear dose response. In vitro exposure of primary hepatocytes to an environmentally relevant, moderate level of arsenite results in increased oxidant production that appears to arise from changes in the expression and activity of respiratory Complex I of the mitochondrial proton circuit. In primary hepatocytes the excess oxidant production appears to elicit adaptive responses that promote resistance to oxidative stress and a propensity to increased proliferation. Taken together, these results suggest a nonlinear dose-response characteristic of arsenite with low-dose arsenite promoting adaptive responses in a process known as mitohormesis, with transient increase in ROS levels acting as transducers of arsenite-induced mitohormesis.
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80
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Zheng Y, Song X, Chen H, Lu C, Lai W. Arsenical keratosis coexists with chloracne. TOXICOLOGY COMMUNICATIONS 2017. [DOI: 10.1080/24734306.2017.1355505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Affiliation(s)
- Yue Zheng
- Department of Dermato-venereology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, P.R. China
| | - Xiaojin Song
- Department of Dermato-venereology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, P.R. China
| | - Haiyan Chen
- Department of Dermato-venereology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, P.R. China
| | - Chun Lu
- Department of Dermato-venereology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, P.R. China
| | - Wei Lai
- Department of Dermato-venereology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, P.R. China
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Rahman MT, De Ley M. Arsenic Induction of Metallothionein and Metallothionein Induction Against Arsenic Cytotoxicity. REVIEWS OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2017; 240:151-168. [PMID: 27115674 DOI: 10.1007/398_2016_2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Human exposure to arsenic (As) can lead to oxidative stress that can become evident in organs such as the skin, liver, kidneys and lungs. Several intracellular antioxidant defense mechanisms including glutathione (GSH) and metallothionein (MT) have been shown to minimize As cytotoxicity. The current review summarizes the involvement of MT as an intracellular defense mechanism against As cytotoxicity, mostly in blood. Zinc (Zn) and selenium (Se) supplements are also proposed as a possible remediation of As cytotoxicity. In vivo and in vitro studies on As toxicity were reviewed to summarize cytotoxic mechanisms of As. Intracellular antioxidant defense mechanisms of MT are linked in relation to As cytotoxicity. Arsenic uses a different route, compared to major metal MT inducers such as Zn, to enter/exit blood cells. A number of in vivo and in vitro studies showed that upregulated MT biosynthesis in blood components are related to toxic levels of As. Despite the cysteine residues in MT that aid to bind As, MT is not the preferred binding protein for As. Nonetheless, intracellular oxidative stress due to As toxicity can be minimized, if not eliminated, by MT. Thus MT induction by essential metals such as Zn and Se supplementation could be beneficial to fight against As toxicity.
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Affiliation(s)
| | - Marc De Ley
- Laboratorium voor Biochemie, Katholieke Universiteit Leuven, Celestijnenlaan 200G, Postbus 2413, 3001, Leuven-Heverlee, Belgium
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82
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Singh P, Dutta SR, Passi D, Bharti J. Benefits of Alcohol on Arsenic Toxicity in Rats. J Clin Diagn Res 2017; 11:BF01-BF06. [PMID: 28273963 PMCID: PMC5324408 DOI: 10.7860/jcdr/2017/21700.9146] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Accepted: 09/29/2016] [Indexed: 12/17/2022]
Abstract
INTRODUCTION It has been demonstrated earlier that exposure to ethanol and/or arsenic compounds (such as sodium arsenite) produces toxic effects as shown by both in vitro and in vivo experiments. Chronic exposure of humans to arsenic through drinking water, pesticides or consumption of alcoholic beverages has produced major health problem and concern in recent years. Water being one of the main ingredients for alcohol formation (beer fermentation process) can lead to contamination with arsenic. Thus, people consuming such alcohol are getting continuously exposed to arsenic compounds as well along with alcohol. AIM The present study was undertaken to investigate the effect of alcohol co-administration on arsenic induced changes in carbohydrate metabolic status in adult male albino rats. MATERIALS AND METHODS Adult male albino rats of Wistar strain (weighing~100g) were divided into three groups (n=8 rats/group) including Control or vehicle treated (C), Arsenic treated (As) and Arsenic treated alcohol co-exposed (As+Alc). Treatment with Sodium-arsenite included intra-peritoneal injection consecutively for 14 days at a dose of 5.55 mg/kg (equivalent to 35% of LD50) per day. Absolute alcohol (15% v/v) was fed at a dose of 0.5 ml/100 g body weight per day for five consecutive days from start of the treatment schedule. Distilled water (D/W) was used as vehicle. Blood Glucose (BG) level, levels of glycogen, Pyruvic Acid (PA), Free Amino Acid Nitrogen (FAAN), total protein, Glutamate Oxalate transaminase (GOT) and Glutamate Pyruvate Transaminase (GPT) activity, and glucose-6-phosphatase (G6Pase) activity were measured in tissues including liver, kidney and muscle. RESULTS Treatment with arsenic decreased the levels of BG, liver glycogen and PA, tissue protein and G6Pase activity, GOT activity in liver and muscle, and increased free amino acid content in kidney and muscle, GPT activity in liver and kidney. Alcohol administration to rats co-exposed to arsenic treatment reversed these changes. CONCLUSION Thus, it is suggested that combined administration of alcohol with arsenic can result in the suppression of the down-regulating action of arsenic on glucose homeostasis as evidenced by its hypoglycaemic effect and increased gluconeogenesis and transamination in liver.
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Affiliation(s)
- Purnima Singh
- Associate Professor, Department of Physiology, M. B. Kedia Dental College, Chhapkaiya, Birgunj, Nepal
| | - Shubha Ranjan Dutta
- Assistant Professor, Department of Oral and Maxillofacial Surgery, M. B. Kedia Dental College, Chhapkaiya, Birgunj, Nepal
| | - Deepak Passi
- Tutor, Department of Oral and Maxillofacial Surgery, ESIC Dental College and Hospital, Rohini, Delhi, India
| | - Jaya Bharti
- Dental Surgeon, Karuna Hospital, Delhi, india
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83
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An Interaction between Arsenic-Induced Epigenetic Modification and Inflammatory Promotion in a Skin Equivalent during Arsenic Carcinogenesis. J Invest Dermatol 2017; 137:187-196. [DOI: 10.1016/j.jid.2016.08.017] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Revised: 07/24/2016] [Accepted: 08/01/2016] [Indexed: 12/26/2022]
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84
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Guo Z, Hu Q, Tian J, Yan L, Jing C, Xie HQ, Bao W, Rice RH, Zhao B, Jiang G. Proteomic profiling reveals candidate markers for arsenic-induced skin keratosis. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2016; 218:34-38. [PMID: 27552035 DOI: 10.1016/j.envpol.2016.08.035] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Revised: 06/20/2016] [Accepted: 08/05/2016] [Indexed: 06/06/2023]
Abstract
Proteomics technology is an attractive biomarker candidate discovery tool that can be applied to study large sets of biological molecules. To identify novel biomarkers and molecular targets in arsenic-induced skin lesions, we have determined the protein profile of arsenic-affected human epidermal stratum corneum by shotgun proteomics. Samples of palm and foot sole from healthy subjects were analyzed, demonstrating similar protein patterns in palm and sole. Samples were collected from the palms of subjects with arsenic keratosis (lesional and adjacent non-lesional samples) and arsenic-exposed subjects without lesions (normal). Samples from non-exposed healthy individuals served as controls. We found that three proteins in arsenic-exposed lesional epidermis were consistently distinguishably expressed from the unaffected epidermis. One of these proteins, the cadherin-like transmembrane glycoprotein, desmoglein 1 (DSG1) was suppressed. Down-regulation of DSG1 may lead to reduced cell-cell adhesion, resulting in abnormal epidermal differentiation. The expression of keratin 6c (KRT6C) and fatty acid binding protein 5 (FABP5) were significantly increased. FABP5 is an intracellular lipid chaperone that plays an essential role in fatty acid metabolism in human skin. This raises a possibility that overexpression of FABP5 may affect the proliferation or differentiation of keratinocytes by altering lipid metabolism. KRT6C is a constituent of the cytoskeleton that maintains epidermal integrity and cohesion. Abnormal expression of KRT6C may affect its structural role in the epidermis. Our findings suggest an important approach for future studies of arsenic-mediated toxicity and skin cancer, where certain proteins may represent useful biomarkers of early diagnoses in high-risk populations and hopefully new treatment targets. Further studies are required to understand the biological role of these markers in skin pathogenesis from arsenic exposure.
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Affiliation(s)
- Zhiling Guo
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Qin Hu
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Jijing Tian
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Li Yan
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Chuanyong Jing
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Heidi Qunhui Xie
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Wenjun Bao
- JMP Life Sciences, SAS Institute, Cary, NC 27513, USA
| | - Robert H Rice
- Department of Environmental Toxicology, University of California, Davis, CA 95616-8588, USA
| | - Bin Zhao
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
| | - Guibin Jiang
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
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Huestis J, Zhou X, Chen L, Feng C, Hudson LG, Liu KJ. Kinetics and thermodynamics of zinc(II) and arsenic(III) binding to XPA and PARP-1 zinc finger peptides. J Inorg Biochem 2016; 163:45-52. [PMID: 27521476 PMCID: PMC5096954 DOI: 10.1016/j.jinorgbio.2016.08.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Revised: 07/29/2016] [Accepted: 08/01/2016] [Indexed: 12/18/2022]
Abstract
Inhibition of DNA repair is an established mechanism of arsenic co-carcinogenesis, and may be perpetuated by the binding of As(III) to key zinc finger (zf) DNA repair proteins. Validated molecular targets of As(III) include the first zinc finger domain of Poly (ADP-Ribose) Polymerase 1 (PARP-1), and the zinc finger domain of Xeroderma Pigmentosum Complementation Group A (XPA). In order to gain an understanding of the thermodynamic and kinetic parameters of the interaction of As(III) with these two zinc finger motifs, a fluorescence based approach was used to investigate Zn(II) and As(III) binding to synthetic model peptides corresponding to the zf motif of XPA and first zf motif of PARP-1, referred to in this paper as XPAzf and PARP-1zf-1, respectively. While XPAzf and PARP-1zf-1 display similar relative affinities for As(III), PARP-1zf-1 shows a potential kinetic advantage over XPAzf for As(III) binding, with a rate constant for the fast phase of formation of As(III)-PARP-1zf-1 approximately 4-fold higher than for As(III)-XPAzf. However, the binding of Zn(II) with either peptide proceeds at a faster rate than As(III). Notably, XPAzf demonstrates comparable affinities for binding both metals, while PARP-1zf-1 shows a slightly higher affinity for Zn(II), suggesting that the relative concentrations of Zn(II) and As(III) in a system may significantly influence which species predominates in zinc finger occupancy. These results provide insight into the mechanisms underlying interactions between zinc finger structures and As(III), and highlight the potential utility of zinc supplementation in mitigating adverse effects of As(III) on zinc finger functions in vivo.
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Affiliation(s)
- Juliana Huestis
- Department of Pharmaceutical Sciences, College of Pharmacy, University of New Mexico Health Sciences Center, Albuquerque, NM 87131, USA.
| | - Xixi Zhou
- Department of Pharmaceutical Sciences, College of Pharmacy, University of New Mexico Health Sciences Center, Albuquerque, NM 87131, USA.
| | - Li Chen
- Department of Pharmaceutical Sciences, College of Pharmacy, University of New Mexico Health Sciences Center, Albuquerque, NM 87131, USA.
| | - Changjian Feng
- Department of Pharmaceutical Sciences, College of Pharmacy, University of New Mexico Health Sciences Center, Albuquerque, NM 87131, USA.
| | - Laurie G Hudson
- Department of Pharmaceutical Sciences, College of Pharmacy, University of New Mexico Health Sciences Center, Albuquerque, NM 87131, USA.
| | - Ke Jian Liu
- Department of Pharmaceutical Sciences, College of Pharmacy, University of New Mexico Health Sciences Center, Albuquerque, NM 87131, USA.
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Ganapathy S, Li P, Fagman J, Yu T, Lafontant J, Zhang G, Chen C. Low doses of arsenic, via perturbing p53, promotes tumorigenesis. Toxicol Appl Pharmacol 2016; 306:98-104. [DOI: 10.1016/j.taap.2016.07.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Revised: 07/12/2016] [Accepted: 07/13/2016] [Indexed: 11/27/2022]
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Luz AL, Godebo TR, Bhatt DP, Ilkayeva OR, Maurer LL, Hirschey MD, Meyer JN. From the Cover: Arsenite Uncouples Mitochondrial Respiration and Induces a Warburg-like Effect in Caenorhabditis elegans. Toxicol Sci 2016; 152:349-62. [PMID: 27208080 PMCID: PMC4960910 DOI: 10.1093/toxsci/kfw093] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Millions of people worldwide are chronically exposed to arsenic through contaminated drinking water. Despite decades of research studying the carcinogenic potential of arsenic, the mechanisms by which arsenic causes cancer and other diseases remain poorly understood. Mitochondria appear to be an important target of arsenic toxicity. The trivalent arsenical, arsenite, can induce mitochondrial reactive oxygen species production, inhibit enzymes involved in energy metabolism, and induce aerobic glycolysis in vitro, suggesting that metabolic dysfunction may be important in arsenic-induced disease. Here, using the model organism Caenorhabditis elegans and a novel metabolic inhibition assay, we report an in vivo induction of aerobic glycolysis following arsenite exposure. Furthermore, arsenite exposure induced severe mitochondrial dysfunction, including altered pyruvate metabolism; reduced steady-state ATP levels, ATP-linked respiration and spare respiratory capacity; and increased proton leak. We also found evidence that induction of autophagy is an important protective response to arsenite exposure. Because these results demonstrate that mitochondria are an important in vivo target of arsenite toxicity, we hypothesized that deficiencies in mitochondrial electron transport chain genes, which cause mitochondrial disease in humans, would sensitize nematodes to arsenite. In agreement with this, nematodes deficient in electron transport chain complexes I, II, and III, but not ATP synthase, were sensitive to arsenite exposure, thus identifying a novel class of gene-environment interactions that warrant further investigation in the human populace.
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Affiliation(s)
- Anthony L Luz
- *Nicholas School of the Environment, Duke University, Durham, North Carolina
| | - Tewodros R Godebo
- *Nicholas School of the Environment, Duke University, Durham, North Carolina
| | | | - Olga R Ilkayeva
- Duke Molecular Physiology Institute Sarah W. Stedman Nutrition and Metabolism Center
| | - Laura L Maurer
- *Nicholas School of the Environment, Duke University, Durham, North Carolina
| | - Matthew D Hirschey
- Duke Molecular Physiology Institute Sarah W. Stedman Nutrition and Metabolism Center Departments of Medicine and Pharmacology & Cancer Biology, Duke University School of Medicine, Durham, North Carolina
| | - Joel N Meyer
- *Nicholas School of the Environment, Duke University, Durham, North Carolina
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88
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Ogunbanjo O, Onawumi O, Gbadamosi M, Ogunlana A, Anselm O. Chemical speciation of some heavy metals and human health risk assessment in soil around two municipal dumpsites in Sagamu, Ogun state, Nigeria. CHEMICAL SPECIATION & BIOAVAILABILITY 2016. [DOI: 10.1080/09542299.2016.1203267] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Oriyomi Ogunbanjo
- Department of Chemical Sciences, Tai Solarin University of Education, Ijebu-ode, Nigeria
| | - Oluwayemi Onawumi
- Pure and Applied Chemistry, Ladoke Akintola University of Technology, Ogbomoso, Nigeria
| | - Muideen Gbadamosi
- Chemical Sciences, Tai Solarin University of Education, Ijebu-ode, Nigeria
| | - Adejoke Ogunlana
- Chemical Sciences, Tai Solarin University of Education, Ijebu-ode, Nigeria
| | - Oluwaseun Anselm
- Chemical Sciences, Tai Solarin University of Education, Ijebu-ode, Nigeria
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89
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Lal ST, Banipal RPS, Bhatti DJ, Yadav HP. Changing Trends of Skin Cancer: A Tertiary Care Hospital Study in Malwa Region of Punjab. J Clin Diagn Res 2016; 10:PC12-5. [PMID: 27504344 PMCID: PMC4963704 DOI: 10.7860/jcdr/2016/18487.8051] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Accepted: 04/16/2016] [Indexed: 11/24/2022]
Abstract
INTRODUCTION Skin cancer constitutes a small but significant proportion of patients with cancer. Although the presence of eumelanin in dark skin is protective against the development of skin cancer, it is increasingly being diagnosed in the Indian population. AIM To study the profile of skin cancer patients presenting to a tertiary hospital in Malwa area of Punjab, India. MATERIALS AND METHODS Retrospective study was done to analyse the profile of skin cancer patients who attended the institution over one year from 1(st) December 2013 to 30(th) November 2014. A comprehensive review of aetiology and related risk factors was done to correlate the environmental factors with high skin cancer prevalence in this region. RESULTS Skin cancer constituted (3.18%) 84 out of 2638 patients registered with cancer of all types. The age of the patients was 62±14.2 years and ranged from 27 to 92 yrs. Basal cell carcinoma (BCC) was the most common histological type(46/84, 54.76%) followed by squamous cell carcinoma (SCC) (31/84, 36.91%) and malignant melanoma (MM) (7/84, 8.33%). Male: female ratio was found to be 0.79:1. BCC showed higher female preponderance (p<0.05). Head and Neck was the commonest site involved (p<0.05). Majority (88%) of patients were from rural area. 92% of patients were directly into the profession of agriculture with history of prolonged exposure to sunlight. CONCLUSION Skin cancer constitutes a small but significant proportion of patients with cancers. This study highlights a paradoxically increasing trend of BCC and female preponderance. Head and neck is the most common site involved. Exposure to Ultra Violet B (UVB) radiation and higher levels of arsenic in drinking water has been reported to be associated with skin cancers. Limited studies show that levels of arsenic and pesticides were higher in the samples of drinking water in Malwa area of Punjab. Therefore a multipronged strategy to provide safe drinking water supply and discouraging the indiscriminate use of pesticides is recommended.
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Affiliation(s)
- Sonal Tina Lal
- Assistant Professor, Department of Plastic Surgery, GGS Medical College and Hospital, Faridkot, Punjab, India
| | | | - Deepak John Bhatti
- Professor and Head, Department of Plastic Surgery, GGS Medical College and Hospital, Faridkot, Punjab, India
| | - Hanuman Prasad Yadav
- Professor and Head, Department of Radiotherapy, GGS Medical College and Hospital, Faridkot, Punjab, India
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90
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Xue R, Elbendary A, Valdebran M, Chaudhari S, Elston D. Pathologic features of anogenital precancerous high-grade squamous intraepithelial lesion (squamous cell carcinoma in situ). J Cutan Pathol 2016; 43:735-9. [PMID: 27152742 DOI: 10.1111/cup.12732] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2015] [Revised: 01/27/2016] [Accepted: 05/04/2016] [Indexed: 11/30/2022]
Abstract
BACKGROUND Precancerous high-grade squamous intraepithelial lesion (HSIL), the current consensus terminology for anogenital squamous cell carcinoma in situ (SCCIS), often presents with distinctive histopathologic findings that may be a function of anatomic site or associated human papillomavirus infection. METHODS Fifty-six specimens of anogenital HSIL were compared with an equal number of specimens of SCCIS from non-anogenital sites in regard to the presence of parakeratosis, flag sign in the stratum corneum, compact stratum corneum, hypergranulosis, koilocytes, small blue cells, clonal populations of keratinocytes, pagetoid scatter of atypical keratinocytes, clear cell change, glassy red cytoplasm, pigmentation, nuclear/cytoplasmic(N/C) ratio >2/1, nuclear hyperchromasia, pleomorphic nuclei, mitotic figures, abnormal mitotic figures, dyskeratotic keratinocytes, involvement of skin appendages, acantholysis and amyloid deposition. RESULTS Hypergranulosis, koilocytes, small blue cells, pigmentation, nuclear hyperchromasia, dyskeratotic keratinocytes and amyloid deposition were more frequently noted in anogenital HSIL. Parakeratosis, clear cell change, pleomorphic nuclei, skin appendages involvement and acantholysis were strongly associated with non-anogenital location. There was no significant difference in the incidence of the remaining features. CONCLUSION The strongest predicators of an anogenital location included hypergranulosis, koilocytes, small blue cells and nuclear hyperchromasia. Pigmentation and amyloid deposition were also strongly associated with an anogenital location.
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Affiliation(s)
- Ruzeng Xue
- Department of Dermatology, Guangdong Provincial Dermatology Hospital, Guangzhou, China.,Medical University of South Carolina, Charleston, SC, USA
| | - Amira Elbendary
- Medical University of South Carolina, Charleston, SC, USA.,Dermatology Department, Kasr Al Ainy University Hospital, Cairo University, Giza City, Egypt
| | | | - Soham Chaudhari
- College of Osteopathic Medicine, Touro University Nevada, Henderson, NV, USA
| | - Dirk Elston
- Medical University of South Carolina, Charleston, SC, USA
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91
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Xu YY, Zeng QB, Yao ML, Yu C, Li J, Zhang AH. A possible new mechanism and drug intervention for kidney damage due to arsenic poisoning in rats. Toxicol Res (Camb) 2016; 5:511-518. [PMID: 30090365 PMCID: PMC6061977 DOI: 10.1039/c5tx00165j] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2015] [Accepted: 12/30/2015] [Indexed: 11/21/2022] Open
Abstract
Arsenic poisoning is a worldwide endemic disease that affects thousands of people. Currently, the aetiology of the disease is known, but its pathogenesis is uncharacterized and there is no specific treatment. We established a rat model of coal-burning arsenic poisoning by feeding the animals corn powder baked with high arsenic coal. By observing subsequent changes in kidney and immune function, we found that arsenic induces both kidney and immune damage. Furthermore, there is a significant correlation between kidney and immune damage. Moreover, Ginkgo biloba, a known immune enhancer, was used as an intervention agent in arsenic poisoned rats to validate the relationship between kidney and immune damage. Meanwhile, we also explored the mechanism of Ginkgo biloba treatment of kidney damage in burning-coal arsenic poisoned rats. We found that Ginkgo biloba enhanced immune function in rats with arsenic poisoning and ameliorated arsenic-induced kidney damage. These results suggest that immune suppression may be one of the mechanisms underlying arsenic-induced kidney damage and that Ginkgo biloba might relieve kidney damage by enhancing immune function.
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Affiliation(s)
- Yu-Yan Xu
- Key Laboratory of Environment Pollution Monitoring and Disease Control , Ministry of Education; Department of Toxicology , School of Public Health , Guizhou Medical University , Guiyang , Guizhou 550025 , China . ; ; Tel: +86 851 8841 6172
| | - Qi-Bing Zeng
- Key Laboratory of Environment Pollution Monitoring and Disease Control , Ministry of Education; Department of Toxicology , School of Public Health , Guizhou Medical University , Guiyang , Guizhou 550025 , China . ; ; Tel: +86 851 8841 6172
| | - Mao-Lin Yao
- Key Laboratory of Environment Pollution Monitoring and Disease Control , Ministry of Education; Department of Toxicology , School of Public Health , Guizhou Medical University , Guiyang , Guizhou 550025 , China . ; ; Tel: +86 851 8841 6172
| | - Chun Yu
- Key Laboratory of Environment Pollution Monitoring and Disease Control , Ministry of Education; Department of Toxicology , School of Public Health , Guizhou Medical University , Guiyang , Guizhou 550025 , China . ; ; Tel: +86 851 8841 6172
| | - Jun Li
- Key Laboratory of Environment Pollution Monitoring and Disease Control , Ministry of Education; Department of Toxicology , School of Public Health , Guizhou Medical University , Guiyang , Guizhou 550025 , China . ; ; Tel: +86 851 8841 6172
| | - Ai-Hua Zhang
- Key Laboratory of Environment Pollution Monitoring and Disease Control , Ministry of Education; Department of Toxicology , School of Public Health , Guizhou Medical University , Guiyang , Guizhou 550025 , China . ; ; Tel: +86 851 8841 6172
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92
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Consensus for Nonmelanoma Skin Cancer Treatment, Part II: Squamous Cell Carcinoma, Including a Cost Analysis of Treatment Methods. Dermatol Surg 2016; 41:1214-40. [PMID: 26445288 DOI: 10.1097/dss.0000000000000478] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
BACKGROUND Cutaneous squamous cell carcinoma (cSCC) is the second most common cancer in the United States. Cutaneous squamous cell carcinoma has an estimated incidence of more than 700,000 new cases per year and a 5% risk of metastasis. OBJECTIVE To provide clinicians with guidelines for the management of cSCC based on evidence from a comprehensive literature review and consensus among the authors. MATERIALS AND METHODS The authors conducted an extensive review of the medical literature on treatment methods for cSCC, taking into consideration cure rates, recurrence and metastatic rates, aesthetic and functional outcomes, and cost effectiveness of the procedures. RESULTS Surgical treatments provide the best outcomes for cSCC. Mohs micrographic surgery is a cost-effective procedure that affords the highest cure rate, maximal tissue preservation, and superior cosmetic outcomes. Nonsurgical methods may be used as a primary treatment for low-risk squamous cell carcinomas, but the cure rates are lower. CONCLUSION The cure rate remains the most important consideration in choosing the treatment method, but additional factors, such as the patient's general medical condition, psychosocial circumstances, the location of the tumor and cost effectiveness of the therapy should be considered. Mohs micrographic surgery remains the preferred treatment for high-risk tumors and tumors located in cosmetically sensitive areas.
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93
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Zhang JH, Li Y, Song XB, Ji XH, Sun HN, Wang H, Fu SB, Zhao LJ, Sun DJ. Differential expression of serum proteins in rats subchronically exposed to arsenic identified by iTRAQ-based proteomic technology-14-3-3 ζ protein to serve as a potential biomarker. Toxicol Res (Camb) 2016; 5:651-659. [PMID: 30090378 DOI: 10.1039/c5tx00393h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Accepted: 01/31/2016] [Indexed: 12/15/2022] Open
Abstract
Arsenic is a multi-system toxicant. However, the mechanism of arsenic toxicity is not fully clarified and few effective protein biomarkers could be used for arsenic poisoning. This study was to investigate the differentially expressed proteins in the serum of rats subchronically exposed to arsenic. Sixty male rats were randomly divided into four groups, and the dose of sodium arsenite in drinking water for each group was 0, 2, 10, and 50 mg L-1, respectively. The exposure lasted for 12 weeks. An Isobaric tags for relative and absolute quantitation (iTRAQ)-based proteomic approach was used to identify the differentially expressed proteins in serum between control and 50 mg L-1 groups. A total of 201 serum proteins were identified by iTRAQ, of which 12 were significantly changed by arsenic exposure with two up-regulated and ten down-regulated proteins. One down-regulated protein 14-3-3 ζ, an abundant protein expressed in the brain, was verified by ELISA using serum samples and by immunohistochemical, real time PCR, and western blot methods using brain tissues in four groups. Our work provided valuable insight into the serum protein changes in rats exposed to arsenic, and indicated that 14-3-3 ζ may serve as a useful biomarker for nervous damage caused by arsenic poisoning.
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Affiliation(s)
- Jin Hui Zhang
- Key Lab of Etiologic Epidemiology of National Health and Family Planning Commission , Key Lab of Etiologic Epidemiology of Education Bureau of Heilongjiang Province , The Center for Endemic Disease Control , Chinese Center for Disease Control and Prevention , Harbin Medical University , Harbin 150081 , China . ; ; ; Tel: (+86)-451-8750- 2980
| | - Ying Li
- Key Lab of Etiologic Epidemiology of National Health and Family Planning Commission , Key Lab of Etiologic Epidemiology of Education Bureau of Heilongjiang Province , The Center for Endemic Disease Control , Chinese Center for Disease Control and Prevention , Harbin Medical University , Harbin 150081 , China . ; ; ; Tel: (+86)-451-8750- 2980
| | - Xuan Bo Song
- Key Lab of Etiologic Epidemiology of National Health and Family Planning Commission , Key Lab of Etiologic Epidemiology of Education Bureau of Heilongjiang Province , The Center for Endemic Disease Control , Chinese Center for Disease Control and Prevention , Harbin Medical University , Harbin 150081 , China . ; ; ; Tel: (+86)-451-8750- 2980
| | - Xiao Hong Ji
- Key Lab of Etiologic Epidemiology of National Health and Family Planning Commission , Key Lab of Etiologic Epidemiology of Education Bureau of Heilongjiang Province , The Center for Endemic Disease Control , Chinese Center for Disease Control and Prevention , Harbin Medical University , Harbin 150081 , China . ; ; ; Tel: (+86)-451-8750- 2980
| | - Hong Na Sun
- Key Lab of Etiologic Epidemiology of National Health and Family Planning Commission , Key Lab of Etiologic Epidemiology of Education Bureau of Heilongjiang Province , The Center for Endemic Disease Control , Chinese Center for Disease Control and Prevention , Harbin Medical University , Harbin 150081 , China . ; ; ; Tel: (+86)-451-8750- 2980
| | - Hui Wang
- Community Health Service Center of Nanxiang Town , Jiading District , Shanghai 201802 , China
| | - Song Bin Fu
- The Laboratory of Medical Genetics , Harbin Medical University , Harbin 150081 , China
| | - Li Jun Zhao
- Key Lab of Etiologic Epidemiology of National Health and Family Planning Commission , Key Lab of Etiologic Epidemiology of Education Bureau of Heilongjiang Province , The Center for Endemic Disease Control , Chinese Center for Disease Control and Prevention , Harbin Medical University , Harbin 150081 , China . ; ; ; Tel: (+86)-451-8750- 2980
| | - Dian Jun Sun
- Key Lab of Etiologic Epidemiology of National Health and Family Planning Commission , Key Lab of Etiologic Epidemiology of Education Bureau of Heilongjiang Province , The Center for Endemic Disease Control , Chinese Center for Disease Control and Prevention , Harbin Medical University , Harbin 150081 , China . ; ; ; Tel: (+86)-451-8750- 2980
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Li Y, Ye F, Wang A, Wang D, Yang B, Zheng Q, Sun G, Gao X. Chronic Arsenic Poisoning Probably Caused by Arsenic-Based Pesticides: Findings from an Investigation Study of a Household. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2016; 13:E133. [PMID: 26784217 PMCID: PMC4730524 DOI: 10.3390/ijerph13010133] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Revised: 01/08/2016] [Accepted: 01/11/2016] [Indexed: 01/20/2023]
Abstract
In addition to naturally occurring arsenic, man-made arsenic-based compounds are other sources of arsenic exposure. In 2013, our group identified 12 suspected arsenicosis patients in a household (32 living members). Of them, eight members were diagnosed with skin cancer. Interestingly, all of these patients had lived in the household prior to 1989. An investigation revealed that approximately 2 tons of arsenic-based pesticides had been previously placed near a well that had supplied drinking water to the family from 1973 to 1989. The current arsenic level in the well water was 620 μg/L. No other high arsenic wells were found near the family's residence. Based on these findings, it is possible to infer that the skin lesions exhibited by these family members were caused by long-term exposure to well water contaminated with arsenic-based pesticides. Additionally, biochemical analysis showed that the individuals exposed to arsenic had higher levels of aspartate aminotransferase and γ-glutamyl transpeptidase than those who were not exposed. These findings might indicate the presence of liver dysfunction in the arsenic-exposed individuals. This report elucidates the effects of arsenical compounds on the occurrence of high levels of arsenic in the environment and emphasizes the severe human health impact of arsenic exposure.
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Affiliation(s)
- Yongfang Li
- Research Center of Environment and Non-Communicable Disease, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning 110122, China.
| | - Feng Ye
- Yunnan Institute of Endemic Disease Control and Prevention, No. 5 Wen Hua Road, Dali, Yunan 671000, China.
| | - Anwei Wang
- Yunnan Institute of Endemic Disease Control and Prevention, No. 5 Wen Hua Road, Dali, Yunan 671000, China.
| | - Da Wang
- Research Center of Environment and Non-Communicable Disease, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning 110122, China.
| | - Boyi Yang
- Research Center of Environment and Non-Communicable Disease, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning 110122, China.
| | - Quanmei Zheng
- Research Center of Environment and Non-Communicable Disease, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning 110122, China.
| | - Guifan Sun
- Research Center of Environment and Non-Communicable Disease, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning 110122, China.
| | - Xinghua Gao
- Department of Dermatology, No. 1 Hospital of China Medical University, Shenyang, Liaoning 110001, China.
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DOLAI M, ALAM R, KATARKAR A, CHAUDHURI K, ALI M. Oxime Based Selective Fluorescent Sensor for Arsenate Ion in a Greener Way with Bio-Imaging Application. ANAL SCI 2016; 32:1295-1300. [DOI: 10.2116/analsci.32.1295] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Malay DOLAI
- Department of Chemistry, Jadavpur University
| | - Rabiul ALAM
- Department of Chemistry, Jadavpur University
| | - Atul KATARKAR
- Molecular & Human Genetics Division, CSIR-Indian Institute of Chemical Biology
| | - Keya CHAUDHURI
- Molecular & Human Genetics Division, CSIR-Indian Institute of Chemical Biology
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George CM, Brooks WA, Graziano JH, Nonyane BAS, Hossain L, Goswami D, Zaman K, Yunus M, Khan AF, Jahan Y, Ahmed D, Slavkovich V, Higdon M, Deloria-Knoll M, O' Brien KL. Arsenic exposure is associated with pediatric pneumonia in rural Bangladesh: a case control study. Environ Health 2015; 14:83. [PMID: 26497043 PMCID: PMC4619558 DOI: 10.1186/s12940-015-0069-9] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Accepted: 10/05/2015] [Indexed: 05/04/2023]
Abstract
BACKGROUND Pneumonia is the leading cause of death for children under 5 years of age globally, making research on modifiable risk factors for childhood pneumonia important for reducing this disease burden. Millions of children globally are exposed to elevated levels of arsenic in drinking water. However, there is limited data on the association between arsenic exposure and respiratory infections, particularly among pediatric populations. METHODS This case control study of 153 pneumonia cases and 296 controls 28 days to 59 months of age in rural Bangladesh is the first to assess whether arsenic exposure is a risk factor for pneumonia in a pediatric population. Cases had physician diagnosed World Health Organization defined severe or very severe pneumonia. Urine collected during hospitalization (hospital admission time point) and 30 days later (convalescent time point) from cases and a single specimen from community controls was tested for urinary arsenic by graphite furnace atomic absorption. RESULTS The odds for pneumonia was nearly double for children with urinary arsenic concentrations higher than the first quartile (≥6 μg/L) at the hospital admission time point (Odd Ratio (OR):1.88 (95% Confidence Interval (CI): 1.01, 3.53)), after adjustment for urinary creatinine, weight for height, breastfeeding, paternal education, age, and number of people in the household. This was consistent with findings at the convalescent time point where the adjusted OR for children with urinary arsenic concentrations greater than the first quartile (≥6 μg/L) was 2.32 (95% CI: 1.33, 4.02). CONCLUSION We observed a nearly two times higher odds of pneumonia for children with creatinine adjusted urinary arsenic concentrations greater than the first quartile (≥6 μg/L) at the hospital admission time point. This novel finding suggests that low to moderate arsenic exposure may be a risk factor for pneumonia in children under 5 years of age.
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Affiliation(s)
- Christine Marie George
- Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA.
- Department of International Health, Program in Global Disease Epidemiology and Control, Johns Hopkins Bloomberg School of Public Health, 615 N. Wolfe Street, Room E5535, Baltimore, MD, 21205-2103, USA.
| | - W Abdullah Brooks
- Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA.
- International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka, Bangladesh.
| | - Joseph H Graziano
- Department of Environmental Health, Mailman School of Public Health, Columbia University, New York, NY, USA.
| | - Bareng A S Nonyane
- Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA.
| | - Lokman Hossain
- International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka, Bangladesh.
| | - Doli Goswami
- International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka, Bangladesh.
| | - Khalequzzaman Zaman
- International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka, Bangladesh.
| | - Mohammad Yunus
- International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka, Bangladesh.
| | - Al Fazal Khan
- International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka, Bangladesh.
| | - Yasmin Jahan
- International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka, Bangladesh.
| | - Dilruba Ahmed
- International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka, Bangladesh.
| | - Vesna Slavkovich
- Department of Environmental Health, Mailman School of Public Health, Columbia University, New York, NY, USA.
| | - Melissa Higdon
- Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA.
| | - Maria Deloria-Knoll
- Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA.
| | - Katherine L O' Brien
- Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA.
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97
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Correia de Sá TR, Silva R, Lopes JM. Basal cell carcinoma of the skin (part 1): epidemiology, pathology and genetic syndromes. Future Oncol 2015; 11:3011-21. [PMID: 26449153 DOI: 10.2217/fon.15.246] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Basal cell carcinoma (BCC) is the most common skin cancer worldwide with increasing incidence, but difficult to assess due to the current under registration practice. Despite the low mortality rate, BCC is a cause of great morbidity and an economic burden to health services. There are several risk factors that increase the risk of BCC and partly explain its incidence. Low-penetrance susceptibility alleles, as well as genetic alterations in signaling pathways, namely SHH pathway, also contribute to the carcinogenesis. BCC associate with several genetic syndromes, of which basal cell nevus syndrome is the most common.
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Affiliation(s)
| | - Roberto Silva
- Faculty of Medicine, Porto University, 4099-002 Porto, Portugal
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98
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Gao J, Tong L, Argos M, Scannell Bryan M, Ahmed A, Rakibuz-Zaman M, Kibriya MG, Jasmine F, Slavkovich V, Graziano JH, Ahsan H, Pierce BL. The Genetic Architecture of Arsenic Metabolism Efficiency:A SNP-Based Heritability Study of Bangladeshi Adults. ENVIRONMENTAL HEALTH PERSPECTIVES 2015; 123:985-92. [PMID: 25768001 PMCID: PMC4590755 DOI: 10.1289/ehp.1408909] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Accepted: 03/11/2015] [Indexed: 05/04/2023]
Abstract
BACKGROUND Consumption of arsenic-contaminated drinking water adversely affects health. There is interindividual variation in arsenic metabolism efficiency, partially due to genetic variation in the arsenic methyltransferase (AS3MT) gene region. OBJECTIVES The goal of this study was to assess the overall contribution of genetic factors to variation in arsenic metabolism efficiency, as measured by the relative concentration of dimethylarsinic acid (DMA%) in urine. METHODS Using data on genome-wide single nucleotide polymorphisms (SNPs) and urinary DMA% for 2,053 arsenic-exposed Bangladeshi individuals, we employed various SNP-based approaches for heritability estimation and polygenic modeling. RESULTS Using data on all participants, the percent variance explained (PVE) for DMA% by all measured and imputed SNPs was 16% (p = 0.08), which was reduced to 5% (p = 0.34) after adjusting for AS3MT SNPs. Using information on close relatives only, the PVE was 63% (p = 0.0002), but decreased to 41% (p = 0.01) after adjusting for AS3MT SNPs. Regional heritability analysis confirmed 10q24.32 (AS3MT) as a major arsenic metabolism locus (PVE = 7%, p = 4.4 × 10(-10)), but revealed no additional regions. We observed a moderate association between a polygenic score reflecting elevated DMA% (composed of thousands of non-AS3MT SNPs) and reduced skin lesion risk in an independent sample (p < 0.05). We observed no associations for SNPs reported in prior candidate gene studies of arsenic metabolism. CONCLUSIONS Our results suggest that there are common variants outside of the AS3MT region that influence arsenic metabolism in Bangladeshi individuals, but the effects of these variants are very weak compared with variants near AS3MT. The high heritability estimates observed using family-based heritability approaches suggest substantial effects for rare variants and/or unmeasured environmental factors.
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Affiliation(s)
- Jianjun Gao
- Department of Public Health Sciences, The University of Chicago, Chicago, Illinois, USA
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99
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Abstract
Head and neck cancer typically refers to epithelial malignancies of the upper aerodigestive tract and may include neoplasms of the thyroid, salivary glands, and soft tissue, bone sarcomas, and skin cancers. Two-thirds of patients present with advanced disease involving regional lymph nodes at the time of diagnosis. A thorough history and detailed examination are integral to oncologic staging and treatment planning. This article begins with an overview of the head and neck examination (with special attention to detailed findings with clinical implications), followed by a discussion of the major head and neck subsites, and clinical pearls surrounding the examination.
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Affiliation(s)
- Rachel Georgopoulos
- Department of Otolaryngology, Temple University School of Medicine, 3440 North Broad Street, Kresge West 3rd Floor, Philadelphia, PA 19140, USA
| | - Jeffrey C Liu
- Department of Otolaryngology, Temple University School of Medicine, 3440 North Broad Street, Kresge West 3rd Floor, Philadelphia, PA 19140, USA; Head and Neck Section, Fox Chase Cancer Center, 333 Cottman Avenue, Philadelphia, PA 19111, USA.
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100
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Liu ZM, Tseng HY, Cheng YL, Yeh BW, Wu WJ, Huang HS. TG-interacting factor transcriptionally induced by AKT/FOXO3A is a negative regulator that antagonizes arsenic trioxide-induced cancer cell apoptosis. Toxicol Appl Pharmacol 2015; 285:41-50. [PMID: 25791921 DOI: 10.1016/j.taap.2015.03.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Revised: 03/05/2015] [Accepted: 03/06/2015] [Indexed: 12/13/2022]
Abstract
Arsenic trioxide (ATO) is a multi-target drug approved by the Food and Drug Administration as the first-line chemotherapeutic agent for the treatment of acute promyelocytic leukemia. In addition, several clinical trials are being conducted with arsenic-based drugs for the treatment of other hematological malignancies and solid tumors. However, ATO's modest clinical efficacy on some cancers, and potential toxic effects on humans have been reported. Determining how best to reduce these adverse effects while increasing its therapeutic efficacy is obviously a critical issue. Previously, we demonstrated that the JNK-induced complex formation of phosphorylated c-Jun and TG-interacting factor (TGIF) antagonizes ERK-induced cyclin-dependent kinase inhibitor CDKN1A (p21(WAF1/CIP1)) expression and resultant apoptosis in response to ATO in A431 cells. Surprisingly, at low-concentrations (0.1-0.2 μM), ATO increased cellular proliferation, migration and invasion, involving TGIF expression, however, at high-concentrations (5-20 μM), ATO induced cell apoptosis. Using a promoter analysis, TGIF was transcriptionally regulated by ATO at the FOXO3A binding site (-1486 to -1479bp) via the c-Src/EGFR/AKT pathway. Stable overexpression of TGIF promoted advancing the cell cycle into the S phase, and attenuated 20 μM ATO-induced apoptosis. Furthermore, blockage of the AKT pathway enhanced ATO-induced CDKN1A expression and resultant apoptosis in cancer cells, but overexpression of AKT1 inhibited CDKN1A expression. Therefore, we suggest that TGIF is transcriptionally regulated by the c-Src/EGFR/AKT pathway, which plays a role as a negative regulator in antagonizing ATO-induced CDKN1A expression and resultant apoptosis. Suppression of these antagonistic effects might be a promising therapeutic strategy toward improving clinical efficacy of ATO.
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Affiliation(s)
- Zi-Miao Liu
- Department of Medical Laboratory Science and Biotechnology, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan
| | - Hong-Yu Tseng
- Department of Medical Laboratory Science and Biotechnology, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan
| | - Ya-Ling Cheng
- Department of Medical Laboratory Science and Biotechnology, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan
| | - Bi-Wen Yeh
- Department of Medical Laboratory Science and Biotechnology, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan; Department of Urology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Urology, School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Wen-Jeng Wu
- Department of Urology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Urology, School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Huei-Sheng Huang
- Department of Medical Laboratory Science and Biotechnology, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan.
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