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Huang J, Zheng C, Luo R, Cao X, Liu M, Gu Q, Li F, Li J, Wu X, Yang Z, Shen X, Li X. Integrative analysis of multiomics data identifies selenium-related gene ALAD associating with keshan disease. Free Radic Biol Med 2022; 193:702-719. [PMID: 36395956 DOI: 10.1016/j.freeradbiomed.2022.11.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 11/08/2022] [Accepted: 11/08/2022] [Indexed: 11/16/2022]
Abstract
Keshan disease is an endemic fatal dilated cardiomyopathy that can cause heart enlargement, heart failure, and cardiogenic death. Selenium deficiency is considered to be the main cause of Keshan disease. However, the molecular mechanism underlying Keshan disease remains unclear. Our whole-exome sequencing from 68 patients with Keshan disease and 100 controls found 199 candidate genes by gene-level burden tests. Interestingly, using multiomics data, the selenium-related gene ALAD (δ-aminolevulinic acid dehydratase) was the only candidate causative gene identified by three different analysis approaches. Based on single-cell transcriptome data, ALAD was highly expressed in cardiomyocytes and double mutations of human ALAD dramatically reduced its enzyme activity in vitro compared to negative control. Functional analysis of ALAD inhibition in mice resulted in a Keshan phenotype with left ventricular enlargement and cardiac dysfunction, whereas administration of sodium selenite markedly reversed the changes caused by ALAD inhibition. In addition, sodium selenite reversed Keshan phenotypes by affecting energy metabolism and mitochondrial function in mice as shown by the transcriptomic and proteomic data and the ultrastructure of cardiac myocytes. Our findings are the first to demonstrate that the selenium-related gene ALAD is essential for cardiac function by maintaining normal mitochondrial activity, providing strong molecular evidence supporting the hypothesis of selenium deficiency in Keshan disease. These results identified ALAD as a novel target for therapeutic intervention in Keshan disease and Keshan disease-related dilated cardiomyopathy.
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Affiliation(s)
- Jichang Huang
- Institute of Geriatric Cardiovascular Disease, Chengdu Medical College, Chengdu, Sichuan, China
| | - Chenqing Zheng
- Biostatistics Group, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Rong Luo
- Institute of Geriatric Cardiovascular Disease, Chengdu Medical College, Chengdu, Sichuan, China
| | - Xin Cao
- School of Acupuncture-Moxibustion and Tuina, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Mingjiang Liu
- Department of Cardiology, Hospital of the University of Electronic Science and Technology of China and Sichuan Provincial People's Hospital, Chengdu, Sichuan, China
| | - Qingquan Gu
- Shenzhen Rare Disease Engineering Research Center of Metabolomics in Precision Medicine, Shenzhen, China; Shenzhen Aone Medical Laboratory Co, Ltd, Shenzhen, China
| | - Feng Li
- Sichuan Center for Disease Control and Prevention, Chengdu, Sichuan, China
| | - Jinshu Li
- The Center for Heart Development, Hunan Normal University, Changsha, Hunan, China
| | - Xiushan Wu
- The Center for Heart Development, Hunan Normal University, Changsha, Hunan, China; Guangdong Provincial Key Laboratory of Pathogenesis, Targeted Prevention and Treatment of Heart Disease, Guangzhou, Guangdong, China
| | - Zhenglin Yang
- Sichuan Provincial Key Laboratory for Human Disease Gene Study, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China.
| | - Xia Shen
- Biostatistics Group, School of Life Sciences, Sun Yat-sen University, Guangzhou, China; State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, China; Center for Intelligent Medicine Research, Greater Bay Area Institute of Precision Medicine (Guangzhou), Fudan University, China.
| | - Xiaoping Li
- Department of Cardiology, Hospital of the University of Electronic Science and Technology of China and Sichuan Provincial People's Hospital, Chengdu, Sichuan, China.
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The Impact of Selenium Deficiency on Cardiovascular Function. Int J Mol Sci 2021; 22:ijms221910713. [PMID: 34639053 PMCID: PMC8509311 DOI: 10.3390/ijms221910713] [Citation(s) in RCA: 66] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 09/28/2021] [Accepted: 09/29/2021] [Indexed: 01/04/2023] Open
Abstract
Selenium (Se) is an essential trace element that is necessary for various metabolic processes, including protection against oxidative stress, and proper cardiovascular function. The role of Se in cardiovascular health is generally agreed upon to be essential yet not much has been defined in terms of specific functions. Se deficiency was first associated with Keshan’s Disease, an endemic disease characterized by cardiomyopathy and heart failure. Since then, Se deficiency has been associated with multiple cardiovascular diseases, including myocardial infarction, heart failure, coronary heart disease, and atherosclerosis. Se, through its incorporation into selenoproteins, is vital to maintain optimal cardiovascular health, as selenoproteins are involved in numerous crucial processes, including oxidative stress, redox regulation, thyroid hormone metabolism, and calcium flux, and inadequate Se may disrupt these processes. The present review aims to highlight the importance of Se in cardiovascular health, provide updated information on specific selenoproteins that are prominent for proper cardiovascular function, including how these proteins interact with microRNAs, and discuss the possibility of Se as a potential complemental therapy for prevention or treatment of cardiovascular disease.
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Zhang B, Yeh DD, Ortiz-Reyes LA, Chang Y, Quraishi SA. Impact of nationwide essential trace element shortages: A before-after, single-center analysis of hospitalized adults receiving home parenteral nutrition therapy. Nutr Clin Pract 2021; 37:442-450. [PMID: 34339061 DOI: 10.1002/ncp.10730] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
BACKGROUND Recent data on the prevalence of essential trace element (ETE) deficiencies in home parenteral nutrition (HPN) patients are scarce. We investigated whether ETE deficiencies are still an important issue for HPN patients and whether the prevalence of such deficiencies may be influenced by nationwide drug shortages. METHODS We conducted a single-institution, retrospective analysis from 2006 to 2015 of hospitalized HPN patients who continued PN during and in between hospitalizations. In subgroup analysis, patients were dichotomized as those with HPN duration <1 vs ≥1 year. Zinc (Zn), copper (Cu), and selenium (Se) levels were abstracted for patients over the study period. Prevalence of ETE deficiency was compared using chi-squared test for patients hospitalized during nonshortage vs shortage (2011-2014) periods. RESULTS Ninety-six patients were included in the analysis. Prevalence of ETE deficiency during nonshortage vs shortage periods was 48% vs 54% (Zn), 15% vs 21% (Cu), and 24% vs 48% (Se; P = .01), respectively. When comparing patients who received HPN <1 year vs ≥1 year, the prevalence of Se deficiency doubled during shortage in both subgroups (24% to 42% vs 26% to 49%); and Cu deficiency tripled during shortage period in the group receiving HPN ≥1 year (5% to 16%). CONCLUSION ETE deficiency is prevalent in hospitalized HPN patients and was exacerbated during nationwide shortages of parenteral supplements. Statistical significance may be limited by small sample size. Future studies are needed to determine optimal ETE supplementation strategies for minimizing the impacts of nationwide drug shortages on HPN patients.
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Affiliation(s)
- Bin Zhang
- Department of Pharmacy, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - D Dante Yeh
- Ryder Trauma Center, DeWitt Daughtry Family Department of Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Luis Alfonso Ortiz-Reyes
- Clinical Evaluation Research Unit, Kingston General Hospital, Department of Critical Care, Queen's University, Kingston, Ontario, Canada
| | - Yuchiao Chang
- Department of Medicine, Harvard Medical School, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Sadeq A Quraishi
- Department of Anesthesiology and Perioperative Medicine, Tufts Medical Center, Tufts University School of Medicine, Boston, Massachusetts, USA
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Mauhin W, Bouzidi H, Colson A, Lejour G, Miao Y, Montagner C, London J, Subran B, Amathieu R, Lazard T, Lidove O. [Fatal nutrient deficiencies after gastric bypass]. Rev Med Interne 2021; 42:729-733. [PMID: 34144843 DOI: 10.1016/j.revmed.2021.05.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 04/01/2021] [Accepted: 05/09/2021] [Indexed: 11/16/2022]
Abstract
INTRODUCTION Bariatric surgery is a very effective treatment for obesity. After gastric bypass, micronutrient deficiencies frequently occur which can have dramatic consequences. CASE REPORT We report the case of a 55-year-old woman who was admitted for psychomotor retardation, bilateral leg pitting edema and psoriasis-like rash that had been ongoing for 3 months. Pancytopenia, encephalopathy and heart failure rapidly occurred leading to multiorgan dysfunction syndrome and death. We retrospectively identified severe selenium deficiency with possible secondary cardiomyopathy, niacin deficiency resulting in pellagrous encephalopathy with skin lesions and gelatinous transformation of bone marrow. CONCLUSION Micronutrient deficiency should systematically be assessed when new symptoms occur in a patient with a history of bariatric surgery. Selenium deficiency should be considered in the presence of any heart failure in this context.
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Affiliation(s)
- W Mauhin
- Service de médecine interne, groupe hospitalier Diaconesses Croix-Saint-Simon, site Avron, 75020 Paris, France.
| | - H Bouzidi
- Service de réanimation, groupe hospitalier Diaconesses Croix-Saint-Simon, site Avron, 75020 Paris, France
| | - A Colson
- Service transversal de nutrition et diététique, Paris, France
| | - G Lejour
- Service de réanimation, groupe hospitalier Diaconesses Croix-Saint-Simon, site Avron, 75020 Paris, France
| | - Y Miao
- Service de médecine interne, groupe hospitalier Diaconesses Croix-Saint-Simon, site Avron, 75020 Paris, France
| | - C Montagner
- Service de médecine interne, groupe hospitalier Diaconesses Croix-Saint-Simon, site Avron, 75020 Paris, France
| | - J London
- Service de médecine interne, groupe hospitalier Diaconesses Croix-Saint-Simon, site Avron, 75020 Paris, France
| | - B Subran
- Service de médecine interne, groupe hospitalier Diaconesses Croix-Saint-Simon, site Avron, 75020 Paris, France
| | - R Amathieu
- Service de réanimation, groupe hospitalier Diaconesses Croix-Saint-Simon, site Avron, 75020 Paris, France
| | - T Lazard
- Service de réanimation, groupe hospitalier Diaconesses Croix-Saint-Simon, site Avron, 75020 Paris, France
| | - O Lidove
- Service de médecine interne, groupe hospitalier Diaconesses Croix-Saint-Simon, site Avron, 75020 Paris, France
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Qiao L, Amhare AF, Deng H, Lv Y, Zhao Y, Liu J, Lei J, Wang L, Chilufya MM, Han J. Protective effect of chondroitin sulfate nano-selenium on chondrocyte of patients with Kashin-Beck disease. J Biomater Appl 2021; 35:1347-1354. [PMID: 33487067 DOI: 10.1177/0885328220988427] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
OBJECTIVE To investigate the protective effect of chondroitin sulfate nano-selenium (SeCS) on chondrocyte of Kashin-Beck disease (KBD). METHODS Chondrocyte samples were isolated from the cartilage of three male KBD patients (54-57 years old). The chondrocytes were respectively divided into four groups: (a) control group, (b) SeCS supplement group (100 ng/mL SeCS), (c) T-2 + SeCS supplement group (20 ng/mL T-2 + 100 ng/mL SeCS), and (d) T-2 group (20 ng/mL T-2). Live/dead staining and transmission electron microscopy (TEM) were used to observe cell viability and ultrastructural changes in chondrocytes respectively. Expressions of Caspase-9, cytochrome C (Cyt-C), and chondroitin sulfate (CS) structure-modifying sulfotransferases including carbohydrate sulfotransferase 3, 15 (CHST-3, CHST-15), and uronyl 2-O-sulfotransferase (UST) were examined by quantitative real-time polymerase chain reaction. RESULTS After one- or three-days intervention, the number of living chondrocytes in the SeCS supplement group was higher than that in the control group, while it is opposite in the T-2 + SeCS supplement group and T-2 group. The cellular villi number in the surface increased in the SeCS supplement group compared with the control group. Mitochondrial morphology density was improved in the T-2 + SeCS supplement group compared with the T-2 group. Expressions of CHST-3, CHST-15, UST, Caspase-9, and Cyt-C on the mRNA level significantly increased in the T-2 + SeCS supplement group and T-2 group compared with the control group. CONCLUSIONS SeCS supplement increased the number of living chondrocytes, improved the ultrastructure, and altered the expressions of CS structure-modifying sulfotransferases, Caspase-9, and Cyt-C.
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Affiliation(s)
- Lichun Qiao
- School of Public Health, Health Science Center, 12480Xi'an Jiaotong University, Xi'an, China
| | - Abebe F Amhare
- School of Public Health, Health Science Center, 12480Xi'an Jiaotong University, Xi'an, China
| | - Huan Deng
- School of Public Health, Health Science Center, 12480Xi'an Jiaotong University, Xi'an, China
| | - Yizhen Lv
- School of Public Health, Health Science Center, 12480Xi'an Jiaotong University, Xi'an, China
| | - Yan Zhao
- School of Public Health, Health Science Center, 12480Xi'an Jiaotong University, Xi'an, China
| | - Jiaxin Liu
- School of Public Health, Health Science Center, 12480Xi'an Jiaotong University, Xi'an, China
| | - Jian Lei
- School of Public Health, Health Science Center, 12480Xi'an Jiaotong University, Xi'an, China
| | - Liyun Wang
- School of Public Health, Health Science Center, 12480Xi'an Jiaotong University, Xi'an, China
| | - Mumba M Chilufya
- School of Public Health, Health Science Center, 12480Xi'an Jiaotong University, Xi'an, China
| | - Jing Han
- School of Public Health, Health Science Center, 12480Xi'an Jiaotong University, Xi'an, China
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Effects of Selenium- and Zinc-Enriched Lactobacillus plantarum SeZi on Antioxidant Capacities and Gut Microbiome in an ICR Mouse Model. Antioxidants (Basel) 2020; 9:antiox9101028. [PMID: 33096847 PMCID: PMC7589369 DOI: 10.3390/antiox9101028] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 10/14/2020] [Accepted: 10/19/2020] [Indexed: 12/15/2022] Open
Abstract
Selenium and zinc are essential trace minerals for humans with various biological functions. In this study, selenium- and zinc-tolerant lactic acid bacteria (LAB) isolates were screened out from human fecal samples. Amongst three hundred LAB isolates, the Lactobacillus plantarum SeZi strain displayed the tolerance against selenium and zinc with the greatest biomass production and bioaccumulation of selenium and zinc. To further assess the characteristics of this strain, the lyophilized L. plantarum SeZi were prepared and administered to Institute of Cancer Research (ICR) mice. The mice were divided into four groups, provided with normal chow (Con), or normal chow supplemented with Na2SeO3 and ZnSO4∙7H2O (SZ), L. plantarum SeZi (Lp), or selenium- and zinc-enriched L. plantarum SeZi (SZ + Lp), respectively. After 4 weeks of oral administration, the concentrations of selenium and zinc in blood were significantly increased in the SZ + Lp group when compared to the control or SZ group (p < 0.05). The increased selenium level led to an enhanced glutathione peroxidase activity and decreased blood malondialdehyde level in the SZ + Lp group (p < 0.05). Meanwhile, the results of bacterial community and microbial metabolic pathway analysis via 16S rRNA gene amplicon sequencing showed that L. plantarum SeZi significantly promoted the utilization of selenocysteine, seleno-cystathionine and seleno-methionine in the selenocompounds metabolism. Here, the in vivo antioxidant capacities of the selenium- and zinc-enriched lactobacillus strain showed us the utilization of a unique probiotic as a Se/Zn supplement with high availability, low toxicity, and additional probiotic advantages.
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Li C, Xia W, Jiang Y, Liu W, Zhang B, Xu S, Li Y. Low level prenatal exposure to a mixture of Sr, Se and Mn and neurocognitive development of 2-year-old children. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 735:139403. [PMID: 32473430 DOI: 10.1016/j.scitotenv.2020.139403] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 04/24/2020] [Accepted: 05/11/2020] [Indexed: 06/11/2023]
Abstract
The excess or deficiency of trace metals can cause adverse neurocognitive development. Evidence of health effect of trace metal mixtures on neurocognitive development is limited in children. We evaluated associations of prenatal exposure to trace metals and metal mixtures with neurocognitive development of 2-year-old children. A total of 544 mother-child pairs were included in the study. The concentrations of 10 trace metals in maternal urine were monitored before delivery. Neurocognitive development indexes, including mental development index (MDI) and psychomotor development index (PDI), were assessed using the Bayley Scales of Infant Development. Linear regression analysis was performed to explore the effects of single-metal and multi-metal exposures. Bayesian Kernel Machine regression (BKMR) was used to investigate overall effect of exposure to metal mixtures and potential interactions among mixture components. We found positive associations of urinary strontium (Sr) and Selenium (Se) levels with MDI scores among all children in the single-metal model. Sr was positively related to MDI, while Manganese (Mn) was negatively associated with PDI in the multi-metal model. The results from BKMR model in girls revealed that MDI scores were improved with the increasing concentrations of Sr, Se and Mn mixture until the concentrations reached their 30th percentiles (Sr: 149.49 μg/g creatinine, Se:18.38 μg/g creatinine, Mn:1.96 μg/g creatinine), with no effect after that threshold level. Sr played a positive role in mental development among mixture components, which was consistent with the results of Sr in the multi-metal models. No signification association of mixture with MDI/PDI was found in boys. The study suggested potential sex-specific association of Sr, Se and Mn mixture levels (at or below their 30th percentiles) with improved mental development, and beneficial role of Sr.
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Affiliation(s)
- Chunhui Li
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, State Key Laboratory of Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Wei Xia
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, State Key Laboratory of Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Yangqian Jiang
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, State Key Laboratory of Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Wenyu Liu
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, State Key Laboratory of Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Bin Zhang
- Wuhan Women and Children Medical Care Center, Wuhan, Hubei, People's Republic of China
| | - Shunqing Xu
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, State Key Laboratory of Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Yuanyuan Li
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, State Key Laboratory of Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China.
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Yiming Z, Qingqing L, Hang Y, Yahong M, Shu L. Selenium deficiency causes immune damage by activating the DUSP1/NF-κB pathway and endoplasmic reticulum stress in chicken spleen. Food Funct 2020; 11:6467-6475. [PMID: 32618989 DOI: 10.1039/d0fo00394h] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Selenium (Se) is an essential trace element and its deficiency can lead to immune dysfunction. Many studies have investigated the immune damage caused by Se deficiency in chickens, but its mechanism still needs to be explored. In this study, we fed 1-day-old Hyline male chickens with Se deficient diets (the Se content was 0.008 mg kg-1 of diet) and a basal diet (the Se content was 0.15 mg kg-1 of diet). The spleen was collected at the sixth week and used for subsequent experiments. The pathological analysis showed that Se deficiency leads to the destruction of the normal nuclear structure of the spleen cell, and we can observe obvious chromatin condensation and nuclear debris. We constructed a transcriptome database and analyzed the abundance of various genes in the spleen by transcriptome sequence. The analysis of differentially expressed genes (DEGS) showed significant changes in 337 genes, including 210 up-regulations and 127 down-regulations after feeding Se deficient diets. Se deficiency can significantly change oxidative stress and inflammatory response genes in chicken spleen. This study confirmed that Se deficiency increased the IL-2 levels, whereas it down-regulated IL-17, IFN-γ and Foxp3, which indicates that the immune dysfunction of the spleen and Th1/Th2 is imbalanced. We also found that Se deficiency down-regulated some related genes for endoplasmic reticulum Ca2+ transport, leading to endoplasmic reticulum stress (ERS). Moreover, we determined that Se deficiency triggered the low expression of DUSP1/NF-κB. In summary, our results indicate that Se deficiency can inhibit the spleen immune function of chickens by regulating the DUSP1/NF-κB pathway and ERS, leading to spleen damage in chickens. Based on transcriptomics research, our results will help further study the harmful effects of Se deficiency.
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Affiliation(s)
- Zhang Yiming
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, People's Republic of China.
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H 2S Protects against Cardiac Cell Hypertrophy through Regulation of Selenoproteins. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:6494306. [PMID: 31583042 PMCID: PMC6754967 DOI: 10.1155/2019/6494306] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 07/25/2019] [Accepted: 08/05/2019] [Indexed: 02/08/2023]
Abstract
Cardiac hypertrophy is defined as the enlargement of the cardiac myocytes, leading to improper nourishment and oxygen supply due to the increased functional demand. This increased stress on the cardiac system commonly leads to myocardial infarction, contributing to 85% of all cardiac-related deaths. Cystathionine gamma-lyase- (CSE-) derived H2S is a novel gasotransmitter and plays a critical role in the preservation of cardiac functions. Selenocysteine lyase (SCLY) has been identified to produce H2Se, the selenium homologue of H2S. Deficiency of selenium is often found in Keshan disease, a congestive cardiomyopathy. The interaction of H2S and H2Se in cardiac cell hypertrophy has not been explored. In this study, cell viability was evaluated with a 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. Oxidative stress and cell size were observed through immunostaining. The expression of genes was determined by real-time PCR and western blot. Here, we demonstrated that incubation of rat cardiac cells (H9C2) with H2O2 lead to increased oxidative stress and cell surface area, which were significantly attenuated by pretreatment of either H2S or H2Se. H2S incubation induced SCLY/H2Se signaling, which next caused higher expressions and activities of selenoproteins, including glutathione peroxidase and thioredoxin reductase. Furthermore, deficiency of CSE inhibited the expressions of SCLY and selenoprotein P in mouse heart tissues. We also found that both H2S and H2Se stimulated Nrf2-targeted downstream genes. These data suggests that H2S protects against cardiac hypertrophy through enhancement of a group of antioxidant proteins.
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Micronutrient Deficiencies in Medical and Surgical Inpatients. J Clin Med 2019; 8:jcm8070931. [PMID: 31261695 PMCID: PMC6678268 DOI: 10.3390/jcm8070931] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 06/17/2019] [Accepted: 06/21/2019] [Indexed: 02/06/2023] Open
Abstract
Inpatients are threatened by global malnutrition, but also by specific micronutrient (i.e., trace element and vitamins) deficiencies that frequently are overseen in the differential diagnosis of major organ dysfunctions. Some of them are related to specific geographic risks (iodine, iron, selenium, zinc, vitamin A), while others are pathology related, and finally many are associated with specific feeding patterns, including low dose enteral feeding. Among the pathologies in which laboratory blood investigations should include a micronutrient outwork, anemia is in the front line, followed by obesity with bariatric surgery, chronic liver disease, kidney disease, inflammatory bowel disease, cardiomyopathies and heart failure. The micronutrients at the highest risk are iron, zinc, thiamine, vitamin B12 and vitamin C. Admission to hospital has been linked with an additional risk of malnutrition—feeding below 1500 kcal/day was frequent and has been associated with a structural additional risk of insufficient micronutrient intake to cover basal needs. Although not evidence based, systematic administration of liberal thiamine doses upon admission, and daily complementation of inpatients’ food and enteral feeding solutions with multi-micronutrient tablets might be considered.
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Lipshultz SE, Law YM, Asante-Korang A, Austin ED, Dipchand AI, Everitt MD, Hsu DT, Lin KY, Price JF, Wilkinson JD, Colan SD. Cardiomyopathy in Children: Classification and Diagnosis: A Scientific Statement From the American Heart Association. Circulation 2019; 140:e9-e68. [PMID: 31132865 DOI: 10.1161/cir.0000000000000682] [Citation(s) in RCA: 165] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
In this scientific statement from the American Heart Association, experts in the field of cardiomyopathy (heart muscle disease) in children address 2 issues: the most current understanding of the causes of cardiomyopathy in children and the optimal approaches to diagnosis cardiomyopathy in children. Cardiomyopathies result in some of the worst pediatric cardiology outcomes; nearly 40% of children who present with symptomatic cardiomyopathy undergo a heart transplantation or die within the first 2 years after diagnosis. The percentage of children with cardiomyopathy who underwent a heart transplantation has not declined over the past 10 years, and cardiomyopathy remains the leading cause of transplantation for children >1 year of age. Studies from the National Heart, Lung, and Blood Institute-funded Pediatric Cardiomyopathy Registry have shown that causes are established in very few children with cardiomyopathy, yet genetic causes are likely to be present in most. The incidence of pediatric cardiomyopathy is ≈1 per 100 000 children. This is comparable to the incidence of such childhood cancers as lymphoma, Wilms tumor, and neuroblastoma. However, the published research and scientific conferences focused on pediatric cardiomyopathy are sparcer than for those cancers. The aim of the statement is to focus on the diagnosis and classification of cardiomyopathy. We anticipate that this report will help shape the future research priorities in this set of diseases to achieve earlier diagnosis, improved clinical outcomes, and better quality of life for these children and their families.
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Cai J, Yang J, Liu Q, Gong Y, Zhang Y, Zhang Z. Selenium deficiency inhibits myocardial development and differentiation by targeting the mir-215-5p/CTCF axis in chicken. Metallomics 2019; 11:415-428. [DOI: 10.1039/c8mt00319j] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Selenium (Se) is imperative for normal myocardial differentiation and development, and these basic cellular functions can be regulated by miRNA during cardiogenesis.
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Affiliation(s)
- Jingzeng Cai
- College of Veterinary Medicine
- Northeast Agricultural University
- Harbin 150030
- P. R. China
| | - Jie Yang
- College of Veterinary Medicine
- Northeast Agricultural University
- Harbin 150030
- P. R. China
| | - Qi Liu
- College of Veterinary Medicine
- Northeast Agricultural University
- Harbin 150030
- P. R. China
| | - Yafan Gong
- College of Veterinary Medicine
- Northeast Agricultural University
- Harbin 150030
- P. R. China
| | - Yuan Zhang
- College of Veterinary Medicine
- Northeast Agricultural University
- Harbin 150030
- P. R. China
| | - Ziwei Zhang
- College of Veterinary Medicine
- Northeast Agricultural University
- Harbin 150030
- P. R. China
- Key Laboratory of the Provincial Education Department of Heilongjiang for Common Animal Disease Prevention and Treatment
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Abstract
Abstract
The role of selenium has been changed over the last decade. The element that was previously considered to be toxic turned out to be present in the human body in amounts of 10–15 mg, and almost every cell of our body contains it. Selenium contributes to growth, supports healthy muscle activity, reproductive organs, reduces the toxicity of certain elements such as mercury, supports the immune system, and even delays the spread of certain viruses (influenza, Ebola, HIV). Selenium-deficient areas of Europe could be a risk for their populations. The recommended daily intake (RDA) of selenium is 55 µg/day, while WHO and FAO have set up the daily tolerable dose at 400 µg/day. We must count with the harmful effects of selenium overdose, but it is almost impossible to introduce this amount into our body solely with food. Our selenium sources can be refilled with food supplements or selenium-enriched functional foods. In the review article, we report about the role of selenium in the environment, selenium-enriched plants, selenium-enriched yeast, the role of selenium in animal feed and in the human body, the opportunities of selenium restoration, selenium-enriched animal products, and the selenium content of milk.
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Long-Term Supplementation of Laying Hen Diets with Various Selenium Sources as a Method for the Fortification of Eggs with Selenium. J CHEM-NY 2018. [DOI: 10.1155/2018/7986591] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The following study focuses on a comparison of the effectiveness of egg content enrichment with selenium (Se) via application of sodium selenite (Na-selenite), selenium-enriched yeast (Se-Yeast), or selenomethionine (Se-Met) in laying hen diets. Two hundred sixteen laying hens were divided into four treatments, each comprising eighteen replications, and each with three hens per cage. Animals were fed a basal diet without Se supplementation (control: selenium content 0.058 mg/kg), with the addition of Na-selenite, Se-Yeast, or Se-Met in amounts equivalent to 0.3 mg/kg of added selenium. The egg quality, the selenium content in eggs after the third and the fifth months of using Se supplementation, and the selenium level in the liver were determined. Enrichment of egg content with selenium was the most effective (382 μg/kg) via application of dietary Se-Met. Application of Na-selenite and Se-Yeast led to a similar effect on Se-accretion in egg content (255.9 and 258.9 μg/kg, respectively). Additionally, the calculated average Se concentration in one fresh egg was also higher in eggs from hens that received selenium additives in their diet and was far higher, almost three times higher for Se-Met addition, than the concentrations in controls. Se-accretion in the liver wet tissue was greater following application of Se-Yeast in the diet than following other treatments. These results indicate that the use of selenomethionine in the laying hen diet is the best method of enriching eggs with this micronutrient. In turn, the eggs obtained in this way can be an excellent source of highly bioavailable selenium in the human diet.
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Sun Y, Gao C, Wang X, Yuan Y, Liu Y, Jia J. Serum quantitative proteomic analysis of patients with keshan disease based on iTRAQ labeling technique: A first term study. J Trace Elem Med Biol 2017; 44:331-338. [PMID: 28965596 DOI: 10.1016/j.jtemb.2017.09.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Revised: 09/06/2017] [Accepted: 09/15/2017] [Indexed: 01/04/2023]
Abstract
Keshan disease (KD), an endemic myocardiopathy, with unknown etiology, is still threatening human health. Proteomics studies of Keshan disease is rarely known. In the current study, isobaric tags for relative and absolute quantitation (iTRAQ) labeling coupled with two-dimensional liquid chromatography-tandem mass spectrometry (2D-LC-MS/MS) was firstly used to screen for the differentially expressed proteins (DEPs) in serum between Keshan disease and healthy residents in endemic area. 27 differentially expressed proteins were quantified, 9 of which were significantly altered (fold change > 1.2 or < 0.8) between the two groups. Bioinformatic analysis revealed that a wide variety of biology process played roles in KD pathophysiology. These differentially expressed proteins were mainly involved in complement coagulation pathways. A significant high serum level of LGALS3BP were observed. Our first term study in KD proteomics provided new view into the molecular mechanisms of KD disease.
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Affiliation(s)
- YuXiao Sun
- Department of Cardiology, Zhengzhou University, People's Hospital, Zhengzhou, Henan, 450003, PR China; Department of Cardiology, Henan Provincial People's Hospital, Zhengzhou, Henan,450003, PR China
| | - ChuanYu Gao
- Department of Cardiology, Zhengzhou University, People's Hospital, Zhengzhou, Henan, 450003, PR China; Department of Cardiology, Henan Provincial People's Hospital, Zhengzhou, Henan,450003, PR China.
| | - XianQing Wang
- Department of Cardiology, Zhengzhou University, People's Hospital, Zhengzhou, Henan, 450003, PR China; Department of Cardiology, Henan Provincial People's Hospital, Zhengzhou, Henan,450003, PR China
| | - YiQiang Yuan
- Department of Cardiology, The Seventh People's Hospital, Zhengzhou, Henan, 450016, PR China
| | - YuHao Liu
- Department of Cardiology, Zhengzhou University, People's Hospital, Zhengzhou, Henan, 450003, PR China; Department of Cardiology, Henan Provincial People's Hospital, Zhengzhou, Henan,450003, PR China
| | - JunGe Jia
- Department of Cardiology, The Seventh People's Hospital, Zhengzhou, Henan, 450016, PR China
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Sun Y, Gao C, Wang X, Liu Y. Preliminary quantitative proteomics analysis in chronic and latent Keshan disease by iTRAQ labeling approach. Oncotarget 2017; 8:105761-105774. [PMID: 29285290 PMCID: PMC5739677 DOI: 10.18632/oncotarget.22397] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2017] [Accepted: 10/05/2017] [Indexed: 12/02/2022] Open
Abstract
Keshan disease is a congestive cardiomyopathy. Dietary selenium deficiency combined with additional stressors are recognized to cause the cardiomyopathies. In this study, clinical condition of individuals with different subtypes including chronic and latent were analyzed. ECG abnormalities, chest radiography, echocardiography and blood selenium concentration were assessed. Subsequently, in effort to uncover proteins that were reliably changed in patients, isobaric tags for absolute and relative quantitation technology was applied. Bioinformatics analysis of the differentially expressed proteins were performed by means of Gene Ontology classification, KEGG pathway, and Ingenuity Pathway Analysis. ELISA experiment was used to detect the interesting proteins. As a result, chronic patients showed more EGC abnormalities compared to Latent. All patients had low blood selenium level. Proteomics data revealed 28 differentially expressed proteins. By ELISA variation, LGALS3BP was increased in chronic patients. PZP was elevated specially in latent patients. The above results might be beneficial for further biomarkers discovery and Keshan disease pathological mechanism study.
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Affiliation(s)
- Yuxiao Sun
- Department of Cardiology, Zhengzhou University, People's Hospital, Zhengzhou, Henan 450003, PR China.,Department of Cardiology, Henan Provincial People's Hospital, Zhengzhou, Henan 450003, PR China
| | - Chuanyu Gao
- Department of Cardiology, Zhengzhou University, People's Hospital, Zhengzhou, Henan 450003, PR China.,Department of Cardiology, Henan Provincial People's Hospital, Zhengzhou, Henan 450003, PR China
| | - Xianqing Wang
- Department of Cardiology, Zhengzhou University, People's Hospital, Zhengzhou, Henan 450003, PR China.,Department of Cardiology, Henan Provincial People's Hospital, Zhengzhou, Henan 450003, PR China
| | - Yuhao Liu
- Department of Cardiology, Zhengzhou University, People's Hospital, Zhengzhou, Henan 450003, PR China.,Department of Cardiology, Henan Provincial People's Hospital, Zhengzhou, Henan 450003, PR China
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Huo R, Yang L, Zhang TG, Wei JY. Human selenium-containing single-chain variable fragment with glutathione peroxidase activity protects NIH3T3 fibroblast against oxidative damage. Mol Biol 2017. [DOI: 10.1134/s0026893317030074] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Ma YM, Ibeanu G, Wang LY, Zhang JZ, Chang Y, Dong JD, Li PA, Jing L. Selenium suppresses glutamate-induced cell death and prevents mitochondrial morphological dynamic alterations in hippocampal HT22 neuronal cells. BMC Neurosci 2017; 18:15. [PMID: 28103798 PMCID: PMC5244737 DOI: 10.1186/s12868-017-0337-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Accepted: 01/12/2017] [Indexed: 01/17/2023] Open
Abstract
Background Previous studies have indicated that selenium supplementation may be beneficial in neuroprotection against glutamate-induced cell damage, in which mitochondrial dysfunction is considered a major pathogenic feature. However, the exact mechanisms by which selenium protects against glutamate-provoked mitochondrial perturbation remain ambiguous. In this study glutamate exposed murine hippocampal neuronal HT22 cell was used as a model to investigate the underlying mechanisms of selenium-dependent protection against mitochondria damage. Results We find that glutamate-induced cytotoxicity was associated with enhancement of superoxide production, activation of caspase-9 and -3, increases of mitochondrial fission marker and mitochondrial morphological changes. Selenium significantly resolved the glutamate-induced mitochondria structural damage, alleviated oxidative stress, decreased Apaf-1, caspases-9 and -3 contents, and altered the autophagy process as observed by a decline in the ratio of the autophagy markers LC3-I and LC3-II. Conclusion These findings suggest that the protection of selenium against glutamate stimulated cell damage of HT22 cells is associated with amelioration of mitochondrial dynamic imbalance.
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Affiliation(s)
- Yan-Mei Ma
- Department of Pathology, Ningxia Medical University, Ningxia Key Laboratory of Cerebrocranial Diseases, Incubation Base of National Key Laboratory, Yinchuan, Ningxia, 750004, People's Republic of China
| | - Gordon Ibeanu
- Department of Pharmaceutical Sciences, Biomanufacturing Research Institute and Technological Enterprise (BRITE), North Carolina Central University, Durham, NC, 27707, USA
| | - Li-Yao Wang
- Department of Pathology, Shanxi Traditional Chinese Medicine Hospital, Xi'an, Shanxi, People's Republic of China
| | - Jian-Zhong Zhang
- Department of Pathology, Ningxia Medical University, Ningxia Key Laboratory of Cerebrocranial Diseases, Incubation Base of National Key Laboratory, Yinchuan, Ningxia, 750004, People's Republic of China
| | - Yue Chang
- Department of Pathology, Ningxia Medical University, Ningxia Key Laboratory of Cerebrocranial Diseases, Incubation Base of National Key Laboratory, Yinchuan, Ningxia, 750004, People's Republic of China
| | - Jian-Da Dong
- Department of Pathology, Ningxia Medical University, Ningxia Key Laboratory of Cerebrocranial Diseases, Incubation Base of National Key Laboratory, Yinchuan, Ningxia, 750004, People's Republic of China
| | - P Andy Li
- Department of Pharmaceutical Sciences, Biomanufacturing Research Institute and Technological Enterprise (BRITE), North Carolina Central University, Durham, NC, 27707, USA.
| | - Li Jing
- Department of Pathology, Ningxia Medical University, Ningxia Key Laboratory of Cerebrocranial Diseases, Incubation Base of National Key Laboratory, Yinchuan, Ningxia, 750004, People's Republic of China.
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Copat C, Vinceti M, D'Agati MG, Arena G, Mauceri V, Grasso A, Fallico R, Sciacca S, Ferrante M. Mercury and selenium intake by seafood from the Ionian Sea: A risk evaluation. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2014; 100:87-92. [PMID: 24433795 DOI: 10.1016/j.ecoenv.2013.11.009] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Revised: 10/07/2013] [Accepted: 11/13/2013] [Indexed: 06/03/2023]
Abstract
The subject of the present study is the evaluation of the concentrations of mercury (Hg) and selenium (Se) in fish and shellfish from the Gulf of Catania (Ionian Sea) and the assessment of related risk-based consumption limits per single contaminant in adults and children. In contrast to the potential harm from Hg, Se is an essential element that is normally found in high levels in seafood. If the amount of Hg is high enough, it could bind Se and irreversibly inhibit selenium-dependent enzymes. Thus, adequate levels of Se need to be available to replace the amount of Se lost to Hg sequestration, thereby maintaining normal selenoprotein synthesis. Hg analysis was conducted using a flow injection analysis system coupled with an atomic adsorption spectrometer, and Se analysis was conducted using an inductively coupled plasma mass spectrometry (ICP-MS). Of the trace elements investigated, only Hg has a limit set by the European Community for human consumption, and this was never exceeded. Nevertheless, based on Target Hazard Quotient (THQ) over 1, and on the Estimated Daily Intake per meal (EDIm) higher than the Provisional Tolerable Intake (PTI) suggested by the Joint FAO/WHO Expert Committee on Food Additive (JECFA), Hg oral exposure derived from consumption of the benthonic fish and of the bigger pelagic fish species analyzed, could follow the occurrence of systemic effects. Se was found always in molar excess respect to Hg in all pelagic fish and in the shellfish, nearly equimolar in the benthonic fish. Determining the evidence that foods, such as pelagic fish, with high molar excess of Se, could contribute to replace the amount of Se bound to Hg and thereby maintaining normal selenoprotein synthesis, is useful for a better understanding of the seafood safety.
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Affiliation(s)
- Chiara Copat
- Environmental and Food Hygiene Laboratory (LIAA), Department of Hygiene and Public Health "G.F. Ingrassia", University of Catania, Via Santa Sofia 87, 95123 Catania, Italy
| | - Marco Vinceti
- Department of Diagnostic and Clinical Medicine and of Public Health, University of Modena and Reggio Emilia, Modena, Italy
| | - Maria Grazia D'Agati
- Environmental and Food Hygiene Laboratory (LIAA), Department of Hygiene and Public Health "G.F. Ingrassia", University of Catania, Via Santa Sofia 87, 95123 Catania, Italy
| | - Giovanni Arena
- Environmental and Food Hygiene Laboratory (LIAA), Department of Hygiene and Public Health "G.F. Ingrassia", University of Catania, Via Santa Sofia 87, 95123 Catania, Italy
| | - Valeria Mauceri
- Environmental and Food Hygiene Laboratory (LIAA), Department of Hygiene and Public Health "G.F. Ingrassia", University of Catania, Via Santa Sofia 87, 95123 Catania, Italy
| | - Alfina Grasso
- Environmental and Food Hygiene Laboratory (LIAA), Department of Hygiene and Public Health "G.F. Ingrassia", University of Catania, Via Santa Sofia 87, 95123 Catania, Italy
| | - Roberto Fallico
- Environmental and Food Hygiene Laboratory (LIAA), Department of Hygiene and Public Health "G.F. Ingrassia", University of Catania, Via Santa Sofia 87, 95123 Catania, Italy
| | - Salvatore Sciacca
- Environmental and Food Hygiene Laboratory (LIAA), Department of Hygiene and Public Health "G.F. Ingrassia", University of Catania, Via Santa Sofia 87, 95123 Catania, Italy
| | - Margherita Ferrante
- Environmental and Food Hygiene Laboratory (LIAA), Department of Hygiene and Public Health "G.F. Ingrassia", University of Catania, Via Santa Sofia 87, 95123 Catania, Italy.
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Thosaikham W, Jitmanee K, Sittipout R, Maneetong S, Chantiratikul A, Chantiratikul P. Evaluation of selenium species in selenium-enriched pakchoi (Brassica chinensis Jusl var parachinensis (Bailey) Tsen & Lee) using mixed ion-pair reversed phase HPLC–ICP-MS. Food Chem 2014; 145:736-42. [DOI: 10.1016/j.foodchem.2013.08.116] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2011] [Revised: 10/04/2012] [Accepted: 08/28/2013] [Indexed: 10/26/2022]
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Comparing gene expression profiles of Kashin-Beck and Keshan diseases occurring within the same endemic areas of China. SCIENCE CHINA-LIFE SCIENCES 2013; 56:797-803. [DOI: 10.1007/s11427-013-4495-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2013] [Accepted: 05/03/2013] [Indexed: 10/26/2022]
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Hou J, Wang T, Liu M, Li S, Chen J, Liu C, Zhang H, Wang Y, Liu Z, Liang N, Wan Y, Li Q, Sun S, Zhang L, Feng H, Liu Y, Wang H. Suboptimal selenium supply--a continuing problem in Keshan disease areas in Heilongjiang province. Biol Trace Elem Res 2011; 143:1255-63. [PMID: 21253891 DOI: 10.1007/s12011-011-8961-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2010] [Accepted: 01/07/2011] [Indexed: 10/18/2022]
Abstract
This study explores whether the declining prevalence of Keshan disease is associated with increasing selenium levels in Keshan disease areas in Heilongjiang province. Six counties endemic with Keshan disease and three non-endemic counties were selected as study areas. In each county, two townships and in each township one village were chosen in which to survey ten families about head hair, grain, and soil samples and to obtain demographic information. Selenium was measured with hydride generation-atomic fluorescence spectrometry. In each county endemic with Keshan disease, one of the villages was chosen to investigate the prevalence of the disease. We collected 534 head hair samples, 446 staple food samples, and 180 soil samples. The selenium levels of head hair and corn in the endemic counties were significantly lower than those in non-endemic counties. Family demographic information was homologous except for the composition of staple food. More residents in Keshan disease areas preferred flour and corn. The detection rate for latent Keshan disease had a significantly negative correlation with the corn selenium level in six counties endemic with Keshan disease. As the population in this region is still at risk for Keshan disease, selenium surveillance measures should be intensified.
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Affiliation(s)
- Jie Hou
- Institute of Keshan Disease, Center for Endemic Disease Control, Harbin Medical University, 157 Baojian Road, Harbin, China
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Synthesis and kinetic evaluation of a trifunctional enzyme mimic with a dimanganese active centre. J Inorg Biochem 2011; 105:283-8. [DOI: 10.1016/j.jinorgbio.2010.09.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2010] [Revised: 09/08/2010] [Accepted: 09/09/2010] [Indexed: 11/22/2022]
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Xu J, Song J, Su J, Wei J, Yu Y, Lv S, Li W, Nie G. A new human catalytic antibody Se-scFv-2D8 and its selenium-containing single domains with high GPX activity. J Mol Recognit 2009; 23:352-9. [DOI: 10.1002/jmr.1001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Bank IM, Shemie SD, Rosenblatt B, Bernard C, Mackie AS. Sudden cardiac death in association with the ketogenic diet. Pediatr Neurol 2008; 39:429-31. [PMID: 19027591 DOI: 10.1016/j.pediatrneurol.2008.08.013] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2007] [Revised: 08/07/2008] [Accepted: 08/13/2008] [Indexed: 11/27/2022]
Abstract
The ketogenic diet is a high-fat, low-carbohydrate, adequate-protein diet that is used to decrease the frequency of seizures in patients who have refractory epilepsy. Despite its positive effects in some patients, there are potential adverse effects. Two complications related to the ketogenic diet are selenium deficiency, which has been associated with impaired myocardial function, and QT prolongation as documented on electrocardiography. Reported here are two cases of death in a child on the ketogenic diet for seizure control. In case 1, the child who died of complications related to torsade de pointes, with documented QT prolongation; post mortem examination revealed selenium-deficiency cardiomyopathy. In case 2, a child experienced QT prolongation while on the ketogenic diet and later died suddenly at home. Both children exhibited selenium deficiency. These two cases suggest that patients on the ketogenic diet require monitoring of the QT interval by electrocardiography, myocardial function by echocardiography, and selenium levels before and during the ketogenic diet.
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Affiliation(s)
- Ilana M Bank
- Department of Pediatrics, Montreal Children's Hospital and the McGill University Health Centre, Montreal, Quebec, Canada
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Huo R, Wei J, Xu J, Lv S, Zheng Q, Yan F, Su J, Fan J, Li J, Duan Y, Yu Y, Jin F, Sun W, Shi Y, Cong D, Li W, Yan G, Luo G. Human catalytic antibody Se-scFv-B3 with high glutathione peroxidase activity. J Mol Recognit 2008; 21:324-9. [DOI: 10.1002/jmr.903] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Zheng K, Board PG, Fei X, Sun Y, Lv S, Yan G, Liu J, Shen J, Luo G. A novel selenium-containing glutathione transferase zeta1-1, the activity of which surpasses the level of some native glutathione peroxidases. Int J Biochem Cell Biol 2008; 40:2090-7. [DOI: 10.1016/j.biocel.2008.02.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2008] [Accepted: 02/11/2008] [Indexed: 11/26/2022]
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Lv SW, Wang XG, Mu Y, Zang TZ, Ji YT, Liu JQ, Shen JC, Luo GM. A novel dicyclodextrinyl diselenide compound with glutathione peroxidase activity. FEBS J 2007; 274:3846-54. [PMID: 17617230 DOI: 10.1111/j.1742-4658.2007.05913.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A 6A,6A'-dicyclohexylamine-6B,6B'-diselenide-bis-beta-cyclodextrin (6-CySeCD) was designed and synthesized to imitate the antioxidant enzyme glutathione peroxidase (GPX). In this novel GPX model, beta-cyclodextrin provided a hydrophobic environment for substrate binding within its cavity, and a cyclohexylamine group was incorporated into cyclodextrin in proximity to the catalytic selenium in order to increase the stability of the nucleophilic intermediate selenolate. 6-CySeCD exhibits better GPX activity than 6,6'-diselenide-bis-cyclodextrin (6-SeCD) and 2-phenyl-1,2-benzoisoselenazol-3(2H)-one (Ebselen) in the reduction of H(2)O(2), tert-butyl hydroperoxide and cumenyl hydroperoxide by glutathione, respectively. A ping-pong mechanism was observed in steady-state kinetic studies on 6-CySeCD-catalyzed reactions. The enzymatic properties showed that there are two major factors for improving the catalytic efficiency of GPX mimics. First, the substrate-binding site should match the size and shape of the substrate and second, incorporation of an imido-group increases the stability of selenolate in the catalytic cycle. More efficient antioxidant ability compared with 6-SeCD and Ebselen was also seen in the ferrous sulfate/ascorbate-induced mitochondria damage system, and this implies its prospective therapeutic application.
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Affiliation(s)
- Shao-Wu Lv
- Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, Jilin University, Changchun, China
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Boldery R, Fielding G, Rafter T, Pascoe AL, Scalia GM. Nutritional Deficiency of Selenium Secondary to Weight Loss (Bariatric) Surgery Associated with Life-Threatening Cardiomyopathy. Heart Lung Circ 2007; 16:123-6. [PMID: 17324623 DOI: 10.1016/j.hlc.2006.07.013] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Nutritional deficiencies of vitamins and minerals have been associated with reversible and irreversible cardiomyopathic processes. Selenium deficient dilated cardiomyopathy, first described in 1935 in the Keshan Province of China, was sometimes reversed with selenium supplementation. In the past three decades, selenium deficient cardiomyopathy has re-emerged in western medicine secondary to gastrointestinal disorders, long-term total parenteral nutrition (TPN) and gastrointestinal surgery. This report describes a case of selenium deficient cardiomyopathy secondary to the bariatric (weight loss) surgical operation bilio-pancreatic diversion (Scopinaro procedure). This patient presented with life-threatening heart failure nine months after this surgery, having lost 100 kg of body weight. Multiple nutritional deficiencies were detected and corrected including severely depleted selenium levels. Cardiac function and the clinical scenario improved dramatically over three weeks. Screening patients at risk of malnourishment for selenium deficiency as a potential cause of cardiomyopathy is indicated.
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Affiliation(s)
- Rachel Boldery
- Wesley Hospital, Sandford Jackson Building, 40 Chasely St., Auchenflower Qld 4066, Australia
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31
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Gómez RM, Pacienza N, Schattner M, Habarta A, Levander OA, Sterin-Borda L. Decreased beta-adrenoceptor chronotropic response in selenium-deficient mice: negative crosstalk between iNOS activity and cAMP accumulation. Biol Trace Elem Res 2007; 117:127-38. [PMID: 17873398 DOI: 10.1007/bf02698089] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2006] [Revised: 11/30/1999] [Accepted: 10/30/2006] [Indexed: 11/26/2022]
Abstract
With the aim to study if selenium (Se) deficiency affects the basal frequency and cardiac response to isoproterenol (ISO), mice were fed a Se-deficient diet (Se-) or the same diet supplemented with 0.2 ppm Se as sodium selenite (Se+) for 4 wk. Atria frequency, cyclic AMP (cAMP) accumulation, nitric oxide synthase (NOS) activity, and beta-adrenoceptor-binding assay were then examined. Results showed that Se-mice have both a reduction in atria frequency as well as in cAMP content but higher NOS activity levels either at basal or after ISO stimulation. These differences were suppressed by feeding Se-mice with a Se-supplemented diet for 1 wk or by inhibition of inducible nitric oxide synthase (iNOS). Alterations observed after ISO stimulation in atria of Se-mice were not related to a beta-adrenoceptor expression modification because specific radioligand-binding parameters in cardiac membranes from Se-mice and Se+ mice were similar. The reduced response on rate and cAMP in atria from Se-mice to direct adenylate cyclase (AC) stimulation by forskolin and the shifted upward levels present in 2-amino-4-methylpyridine-treated Se-mice is in agreement with a negative crosstalk between iNOS activity and AC activity in Se-mice.
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Affiliation(s)
- Ricardo M Gómez
- Cátedra de Farmacología, Facultad de Odontología, Universidad de Buenos Aires, Buenos Aires, 1122, Argentina
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Shrimali RK, Weaver JA, Miller GF, Starost MF, Carlson BA, Novoselov SV, Kumaraswamy E, Gladyshev VN, Hatfield DL. Selenoprotein expression is essential in endothelial cell development and cardiac muscle function. Neuromuscul Disord 2006; 17:135-42. [PMID: 17142041 PMCID: PMC1894657 DOI: 10.1016/j.nmd.2006.10.006] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2005] [Revised: 10/06/2006] [Accepted: 10/11/2006] [Indexed: 01/18/2023]
Abstract
LoxP-Cre technology was used to remove the selenocysteine tRNA gene, trsp, in either endothelial cells or myocytes of skeletal and heart muscle to elucidate the role of selenoproteins in cardiovascular disease. Loss of selenoprotein expression in endothelial cells was embryonic lethal. A 14.5-day-old embryo had numerous abnormalities including necrosis of the central nervous system, subcutaneous hemorrhage and erythrocyte immaturity. Loss of selenoprotein expression in myocytes manifested no apparent phenotype until about day 12 after birth. Affected mice had decreased mobility and an increased respiratory rate, which proceeded rapidly to death. Pathological analysis revealed that mice lacking trsp had moderate to severe myocarditis with inflammation extending into the mediastinitis. Thus, ablation of selenoprotein expression demonstrated an essential role of selenoproteins in endothelial cell development and in proper cardiac muscle function. The data suggest a direct connection between the loss of selenoprotein expression in these cell types and cardiovascular disease.
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Affiliation(s)
- Rajeev K. Shrimali
- Molecular Biology of Selenium Section, Laboratory of Cancer Prevention, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - James A. Weaver
- Molecular Biology of Selenium Section, Laboratory of Cancer Prevention, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Georgina F. Miller
- Division of Veterinary Resources, Office of Research Services, Division of Intramural Research Services, National Institutes of Health, Bethesda, MD 20892, USA
| | - Matthew F. Starost
- Division of Veterinary Resources, Office of Research Services, Division of Intramural Research Services, National Institutes of Health, Bethesda, MD 20892, USA
| | - Bradley A. Carlson
- Molecular Biology of Selenium Section, Laboratory of Cancer Prevention, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | | | - Easwari Kumaraswamy
- Molecular Biology of Selenium Section, Laboratory of Cancer Prevention, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Vadim N. Gladyshev
- Department of Biochemistry, University of Nebraska, Lincoln, NE 68588, USA
| | - Dolph L. Hatfield
- Molecular Biology of Selenium Section, Laboratory of Cancer Prevention, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
- * Corresponding author. Tel.: +1 301 496 2797; fax: +1 301 435 4957. E-mail address: (D.L. Hatfield)
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Sun Y, Mu Y, Ma S, Gong P, Yan G, Liu J, Shen J, Luo G. The molecular mechanism of protecting cells against oxidative stress by 2-selenium-bridged β-cyclodextrin with glutathione peroxidase activity. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2005; 1743:199-204. [PMID: 15843033 DOI: 10.1016/j.bbamcr.2004.10.014] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2003] [Revised: 10/22/2004] [Accepted: 10/22/2004] [Indexed: 11/19/2022]
Abstract
Ultraviolet B (UVB) induces apoptosis and lipid peroxidation of NIH3T3 cells by producing reactive oxygen species (ROS). Glutathione peroxidase (GPX) is one of the most important antioxidant enzymes in organism and it can scavenge ROS. 2-selenium-bridged beta-cyclodextrin (2-SeCD) is a GPX mimic generated in our lab. Its GPX activity is 7.4 U/mumol, which is 7.5 times as much as that of ebselen. In this paper, we have established a cell damage system using UVB radiation. Using this system, we have determined antioxidant effect of 2-SeCD by comparison of malondialdehyde (MDA) and H(2)O(2) contents in NIH3T3 cells before and after UVB radiation. Experimental results indicate that 2-SeCD can inhibit lipid peroxidation and protect the cells from the damage generated by UVB radiation. To evaluate the molecular mechanism of this protection, we determined the effect of 2-SeCD on the expression of p53 and Bcl-2 in NIH3T3 cells. The results showed that 2-SeCD inhibits the increase of p53 expression level and the decrease of expression of Bcl-2 induced by UVB radiation. Thus, we have concluded that protection of NIH3T3 cells against oxidative stress by 2-SeCD was carried out by regulation of the expression of Bcl-2 and p53.
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Affiliation(s)
- Ye Sun
- Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, Jilin University, Changchun, P.R. China
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Sun Y, Li T, Chen H, Zhang K, Zheng K, Mu Y, Yan G, Li W, Shen J, Luo G. Selenium-containing 15-Mer Peptides with High Glutathione Peroxidase-like Activity. J Biol Chem 2004; 279:37235-40. [PMID: 15148324 DOI: 10.1074/jbc.m403032200] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Glutathione peroxidase (GPX) is one of the most crucial antioxidant enzymes in a variety of organisms. Here we described a new strategy for generating a novel GPX mimic by combination of a phage-displayed random 15-mer peptide library followed by computer-aided rational design and chemical mutation. The novel GPX mimic is a homodimer consisting of a 15-mer selenopeptide with an appropriate catalytic center, a specific binding site for substrates, and high catalytic efficiency. Its steady state kinetics was also studied, and the values of k(cat)/K(m)(GSH) and k(cat)/ K(mH(2)O(2)) were found to be similar to that of native GPX and the highest among the existing GPX mimics. Moreover, the novel GPX mimic was confirmed to have a strong antioxidant ability to inhibit lipid peroxidation by measuring the content of malondialdehyde, cell viability, and lactate dehydrogenase activity. Importantly, the novel GPX mimic can penetrate into the cell membrane because of its small molecular size. These characteristics endue the novel mimic with potential perspective for pharmaceutical applications.
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Affiliation(s)
- Ye Sun
- Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, Changchun, Peoples Republic of China
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Li MK, Beck MA, Shi Q, Harruff RC. Unexpected hazard of illegal immigration: Outbreak of viral myocarditis exacerbated by confinement and deprivation in a shipboard cargo container. Am J Forensic Med Pathol 2004; 25:117-24. [PMID: 15166761 DOI: 10.1097/01.paf.0000127394.74705.7e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
We present a group of 18 illegal immigrant stowaways who arrived in a shipboard cargo container suffering from gastroenteritis, dehydration, and malnutrition and showing evidence of viral myocarditis in 3 of 4 fatalities. Our investigation included an evaluation of the 2-week ocean voyage, analysis of medical records and laboratory results of the survivors, autopsies on the decedents, and viral studies on their heart tissue. Of 3 stowaways who died shipboard, 2 showed lymphocytic myocarditis and 1 could not be evaluated histologically due to decomposition. A fourth stowaway died 4 months after arrival with dilated cardiomyopathy and lymphocytic myocarditis. Reverse-transcriptase polymerase chain reaction and nucleotide sequencing of viral isolates from the decedents' heart tissues demonstrated Coxsackie virus B3 genome. We believe that these cases represent an outbreak of viral myocarditis, exacerbated by acute dehydration and malnutrition, due to confinement within the shipping container. Our evidence indicates that close confinement promoted the spread of the virus, and nutritional deprivation increased the stowaways' vulnerability. Furthermore, our observations support the conclusion, based on experimental studies, that nutritionally induced oxidative stress increased the virulence of the etiologic viral agent. In summary, these cases represent a potential infectious disease hazard of illegal immigration.
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Affiliation(s)
- Melissa K Li
- University of Florida, Gainesville, Florida, USA
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Abréu Vélez AM, Warfvinge G, Herrera WL, Abréu Vélez CE, Montoya M F, Hardy DM, Bollag WB, Hashimoto K. Detection of Mercury and Other Undetermined Materials in Skin Biopsies of Endemic Pemphigus Foliaceus. Am J Dermatopathol 2003; 25:384-91. [PMID: 14501287 DOI: 10.1097/00000372-200310000-00004] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
A novel variant of endemic pemphigus foliaceus (EPF) was described among individuals in an area surrounding El Bagre, Colombia, South America. The population in this rural mining community is exposed to high environmental levels of mercury, used for gold extraction, as well as other minerals, metalloids, and trace elements (e.g., quartz, rutile, granite, magnetite, and almenite) and ultraviolet radiation. Fifty control subjects and fifty EPF patients in the endemic area were examined for the presence of mercury in skin biopsies and hair, using autometallographic and mass spectroscopic analyses, respectively. Simultaneously, serum levels of IgE were measured, and cutaneous tests for hypersensitivity reactions were performed. Using autometallography, mercuric sulfides/selenides were detected in 14 of 51 skin biopsies distributed similarly in the control and patient groups. However, significantly higher serum IgE levels and mercury concentrations in hair, urine, and nails were found in patients compared with controls. Microscopic analysis revealed mercuric sulfides/selenides concentrated within and around the sweat gland epithelium, as well as in dendritic cells. Five skin biopsies from EPF patients and five from controls that tested positive for the presence of mercuric sulfides/selenides by autometallography were randomly selected for electron microscopic analysis. This analysis revealed a mixed electron-dense and electron-light material closely associated with desmosomes in patients. However, there were intracellular vesicles containing an amalgam of electron-dense and electron-light materials only in the EPF patients. Thus, EPF-affected individuals are exposed to high levels of environmental mercuric sulfides/selenides and other elements. This is the first study reporting mercuric sulfides/selenides in skin biopsies from people living in a focus of EPF, and these compounds may play a role in the pathogenesis of autoimmunity.
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Affiliation(s)
- Ana María Abréu Vélez
- Institute of Molecular Medicine and Genetic, Medical College of Georgia, Augusta, GA 30912-2630, USA.
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Abstract
AIDS was first identified in Sub-Saharan Africa and North America in the early 1980s. Over the past twenty years, however, HIV-1 has diffused much more rapidly in the former continent than in latter. This appears to be because the virus cannot diffuse well in local populations that have an adequate dietary intake of selenium.
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Affiliation(s)
- H D Foster
- Department of Geography, University of Victoria, British Columbia, Canada.
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38
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Abstract
PURPOSE OF REVIEW Cardiovascular disease is one of the most important causes of morbidity and mortality in western countries, generating an increasing number of admissions to intensive care units. Cardiac failure has long been associated with nutritional disorders, malnutrition and cachexia being frequent during the late phases of congestive heart failure: undernutrition is also a determinant of outcome, even after cardiac transplantation. RECENT FINDINGS It has been shown that early metabolic support can improve the recovery of the ischaemic heart. This paper reviews recent findings on substrates that can support the failing myocardium, which are mainly glucose-insulin, glutamine, taurine, selenium, thiamine, folic acid, and omega-3 fatty acids. Ischaemia-reperfusion generates tissue lesions that can be partly prevented through substrate manipulation. SUMMARY Shifting the substrate metabolism from lipids to carbohydrates and reinforcing the antioxidant status reduces the deleterious biological and clinical consequences of acute ischaemic events. The use of the glucose-insulin-potassium infusion has become widespread with the re-discovery of its value in modulating cellular metabolism and accelerating recovery of the ischaemic myocardium. Antioxidants have gained acceptance in the perioperative phase, as well as in chronic heart failure. This constitutes another piece of evidence in favour of early metabolic and nutritional intervention. There also appears to be room for the prevention of acute deterioration of cardiac function after surgery with the preoperative administration of oral supplements containing omega-3 fatty acids.
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Affiliation(s)
- Mette M Berger
- Intensive Care Unit and Burns Centre, University Hospital, Lausanne, Switzerland.
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