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Gholami A, Amirkalali B, Baradaran HR, Hariri M. A systematic review and dose-response meta-analysis of the effect of selenium supplementation on serum concentration of C-reactive protein. J Trace Elem Med Biol 2023; 80:127273. [PMID: 37531798 DOI: 10.1016/j.jtemb.2023.127273] [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: 11/06/2022] [Revised: 06/12/2023] [Accepted: 07/23/2023] [Indexed: 08/04/2023]
Abstract
BACKGROUND Despite conducting new studies on the potential effect of selenium in reducing inflammation; results held contradictory weights and turns into an intriguing area of research. Concerns have been raised on this matter on hand to reach conclusive/consistent results. Therefore, this study seeks to address this scientific gap by assessing randomized controlled trials (RCTs) investigating the effect of selenium intake on C-reactive protein (CRP). METHOD AND MATERIALS To find all the relevant English-language RCTs, databases including SCOPUS, Web of Science, Clinical Trials.gov, PubMed, and Cochrane Library were searched with no time limit (up to June 2022). Based on the mean changes for both comparison and intervention groups, the effect sizes were calculated. Further, DerSimonian and Laird random-effects model was performed to determine the summary of overall effects and their heterogeneity. RESULTS Fifteen studies were selected for systematic review and thirteen studies were known to be eligible for meta-analysis. Meta-analysis results indicated a significant effect in serum CRP concentrations compared to the control group (weighted mean difference (WMD)= -0.22 mg/L 95 % confidence interval (CI): - 0.39, - 0.04; p = 0.014). CONCLUSION In conclusion, our study confirms the downward effect of selenium on the serum concentration of CRP. On a wider level, further research is also needed to assess the selenium effect on other inflammatory mediators.
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Affiliation(s)
- Ali Gholami
- Noncommunicable Diseases Research Center, Neyshabur University of Medical Sciences, Neyshabur, Iran; Department of Epidemiology and Biostatistics, School of Public Health, Neyshabur University of Medical Sciences, Neyshabur, Iran
| | - Bahareh Amirkalali
- Gastrointestinal & Liver Diseases Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Hamid Reza Baradaran
- Department of Epidemiology, School of Public Health, Iran University of Medical Sciences, Tehran, Iran; Ageing Clinical and Experimental Research Team, Institute of Applied Health Sciences, School of Medicine, Medical Sciences and Nutrition University of Aberdeen, Aberdeen, UK
| | - Mitra Hariri
- Noncommunicable Diseases Research Center, Neyshabur University of Medical Sciences, Neyshabur, Iran; Healthy Ageing Research Centre, Neyshabur University of Medical Sciences, Neyshabur, Iran.
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Norouzi S, Daneshyar M, Farhoomand P, Tukmechi A, Tellez-Isaiasc G. In vitro evaluation of probiotic properties and selenium bioaccumulation of lactic acid bacteria isolated from poultry gastrointestinal, as an organic selenium source. Res Vet Sci 2023; 162:104934. [PMID: 37421824 DOI: 10.1016/j.rvsc.2023.06.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 05/28/2023] [Accepted: 06/14/2023] [Indexed: 07/10/2023]
Abstract
The purpose of this study was to examine the probiotic characteristics and selenium (Se) bioaccumulation potential of five Lactobacillus strains in vitro. Lactobacillus acidophilus, L. delbrueckii subsp. lactis, L. reuteri, L. gallinarum, and L. animalis were among the strains employed. As significant aspects of probiotics, identification, and evaluation of their survival potential in the gastrointestinal system were undertaken. Although all experimental Lactobacillus strains bioaccumulated Se (IV) concentrations in media culture, three Lactobacillus strains (L. animalis, L. gallinarum, and L. acidophilus) bioaccumulated the highest Se concentrations (23.08, 8.62, and 8.51 mg/g, respectively) after culture in the presence of 1.5 mg/ml sodium selenite. By disc diffusion, all isolates were evaluated for antibiotic susceptibility against six antibiotics, including ciprofloxacin, ampicillin, methicillin, streptomycin, tetracycline, and trimethoprim-sulfamethoxazole. Many of the isolates tested positive for resistance to some of the antibiotics utilized. The L. reuteri and L. gallinarum were found to be resistant to about 50% of the antibiotics that were tested. In terms of acid tolerance, L. animalis showed significant resistance at acidic pH by 1.72 log unit reduction whereas L. delbrueckii and L. galliinarum showed significant sensitivity at acidic pH (P > 0.05). Bile tolerance was addressed as an important aspect of the safety assessment for probiotics. There were variances in acid and bile tolerance among species, although all of them tolerated stress conditions to an acceptable degree. Upon comparing the various species, it was observed that L. gallinarum exhibited a significant decline in growth, as evidenced by a decrease of 1.39 log units in cell viability. On the other hand, L. acidophilus and L. animalis demonstrated remarkable bile tolerance, with 0.09 and 0.23 log unit reduction respectively (P < 0.05). These results suggest that L. animalis, L. gallinarum, and L. acidophilus, can be good candidates to evaluate them in vivo in further investigations due to their tolerance to acid, and bile, antibiotic resistance, and strong ability to bioaccumulate Se in chickens.
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Affiliation(s)
- Shokoufeh Norouzi
- Department of Animal Science, Faculty of Agricultural Science, Urmia University, P. O. Box 165, Urmia, Iran
| | - Mohsen Daneshyar
- Department of Animal Science, Faculty of Agricultural Science, Urmia University, P. O. Box 165, Urmia, Iran.
| | - Parviz Farhoomand
- Department of Animal Science, Faculty of Agricultural Science, Urmia University, P. O. Box 165, Urmia, Iran
| | - Amir Tukmechi
- Faculty of Veterinary Medicine, Urmia University, P. O. Box 165, Urmia, Iran
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Gholizadeh M, Khalili A, Roodi PB, Saeedy SAG, Najafi S, Keshavarz Mohammadian M, Djafarian K. Selenium supplementation decreases CRP and IL-6 and increases TNF-alpha: A systematic review and meta-analysis of randomized controlled trials. J Trace Elem Med Biol 2023; 79:127199. [PMID: 37257335 DOI: 10.1016/j.jtemb.2023.127199] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 05/05/2023] [Accepted: 05/12/2023] [Indexed: 06/02/2023]
Abstract
Inflammation is an initiating cause of infectious and non-infectious diseases. Studies have shown that selenium (Se) has anti-inflammatory effects. However, its' effects on serum c-reactive protein (CRP), interleukin-6 (IL-6), and tumor necrosis factor-alpha (TNF-α) plasma concentrations are equivocal. Therefore, we performed a systematic review and meta-analysis of randomized controlled trials (RCTs), evaluating the effects of per oral (PO) and intravenous (IV) Se supplementation on CRP, TNF-α, and IL-6. A systematic search was conducted using four databases, including PubMed, Google Scholar, Cochrane Library, and Scopus to find randomized clinical trials, published up to April 2023. From 19476 papers, after screening and removing duplicate articles, 24 studies were analyzed in the present meta-analysis. In the pooled analysis, PO Se administration showed no significant effect on CRP (WMD: 0.12; 95 % CI -0.11, 0.38; P-value= 0.30). However, IV Se supplementation had a significant negative association with CRP concentration (-2.24; 95 % CI: -4.24, -0.24; p-value: 0.02). Se administration had no significant association with TNF-α plasma concentration (9.64, 95 % CI: -0.59, 19.88, p-value= 0.06; and heterogeneity: 98 %). However, a significant positive association was present between Se and plasma TNF-α concentrations (0.15, 95 % CI: 0.14, 0.17, P-value<0.0001). Moreover, Se supplementation had a significant negative correlation with IL-6 plasma concentration in PO (-0.54; 95 % CI: -1.61, 0.52; P-value = 0.31) and IV administrations (-4.77; 95 % CI: -7.61, -1.93; P-value<0.0001), respectively. This study demonstrated that IV Se administration reduced CRP and IL-6 plasma concentrations. Conversely, IV Se supplementation increased TNF-α plasma concentration. It is evident that further, well-controlled clinical trials are required.
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Affiliation(s)
- Mohammad Gholizadeh
- Department of Clinical Nutrition, Faculty of Nutrition Sciences and Food Industries, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Atefeh Khalili
- Department of Food Sciences and Technology, Branch, Islamic Azad University, Gonbad Kavoos, Golestan, Iran
| | - Poorya Basafa Roodi
- Department of Nutrition, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| | | | - Samaneh Najafi
- Department of Medical Sciences, Islamic Azad University, Arak Branch, Arak, Iran
| | | | - Kurosh Djafarian
- Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical sciences, Tehran, Iran.
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Jaff S, Zeraattalab-Motlagh S, Amiri Khosroshahi R, Gubari M, Mohammadi H, Djafarian K. The effect of selenium therapy in critically ill patients: an umbrella review of systematic reviews and meta-analysis of randomized controlled trials. Eur J Med Res 2023; 28:104. [PMID: 36849891 PMCID: PMC9972714 DOI: 10.1186/s40001-023-01075-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 02/19/2023] [Indexed: 03/01/2023] Open
Abstract
BACKGROUND Selenium is an essential nutrient with antioxidant, anti-inflammatory, and immuno-regulatory properties. Studies have displayed that in critically ill patients, selenium supplementation may be a potentially promising adjunctive therapy. OBJECTIVE We aimed to present an overview of the effects of selenium supplementation in adult critically ill patients based on published systematic reviews and meta-analyses (SRMAs) of randomized controlled trials (RCTs). METHODS A literature search in three electronic databases, PubMed, Scopus, and Web of Science, was performed to find eligible SRMAs until July 2022. For each outcome, the risk ratios (RRs) or mean differences (MDs) and 95% confidence intervals (CIs) were recalculated using either random or fixed effect models. The methodological quality and quality of evidence of the SRMAs were assessed by applying "A Measurement Tool to Assess Systematic Reviews" (AMSTAR2) and Grading of Recommendations Assessment, Development, and Evaluation(GRADE) tools, respectively. RESULTS We included 17 meta-analyses containing 24 RCTs based on inclusion criteria. Selenium supplementation can reduce the incidence of mortality (RR: 0.83, 95% CI 0.71, 0.98, P = 0.024) and incidence of acute renal failure (RR: 0.67, 95% CI 0.46, 0.98, P: 0.038) significantly; however, the certainty of evidence was low. Moreover, with moderate to very low certainty of evidence, no significant effects were found for risk of infection (RR: 0.92, 95% CI 0.80, 1.05, P: 0.207), pneumonia (RR: 1.11, 95% CI 0.72, 1.72, P: 0.675), as well as the length of ICU (MD: 0.15, 95% CI - 1.75, 2.05, P: 0.876) and hospital stay (MD: - 0.51, 95% CI - 3.74, 2.72, P: 0.757) and days on ventilation (MD: - 0.98, 95% CI - 2.93, 0.98, P: 0.329). CONCLUSIONS With low quality of evidence, the use of selenium supplementation could improve the risk of mortality and acute renal failure, but not other outcomes in critically ill patients.
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Affiliation(s)
- Salman Jaff
- Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, P.O. Box 14155-6117, Tehran, Iran
| | - Sheida Zeraattalab-Motlagh
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Reza Amiri Khosroshahi
- Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, P.O. Box 14155-6117, Tehran, Iran
| | - Mohammed Gubari
- Department of Community and Family Medicine, School of Medicine, University of Sulaimani, Sulaymaniyah, Iraq
| | - Hamed Mohammadi
- Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, P.O. Box 14155-6117, Tehran, Iran
| | - Kurosh Djafarian
- Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, P.O. Box 14155-6117, Tehran, Iran.
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Association between Selenium Intake and Optimal Sleep Duration: A National Longitudinal Study. Nutrients 2023; 15:nu15020397. [PMID: 36678268 PMCID: PMC9867097 DOI: 10.3390/nu15020397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 01/06/2023] [Accepted: 01/10/2023] [Indexed: 01/15/2023] Open
Abstract
Inconsistent findings have been discovered in studies examining the link between dietary selenium (Se) and sleep. Data were obtained from 17,176 people aged 20 and over who participated in the China Health and Nutrition Survey (CHNS) from 2004 to 2011. Face-to-face interviews were used to measure sleep duration in 2004, 2006, 2009, and 2011. To track dietary Se consumption, a 3-day, 24-h recall was undertaken. In the analysis, multilevel mixed-effects logistic regression was employed. The odds ratios (95% confidence intervals) of optimal sleep duration (7-9 h/day) in the regression of Model 4 were 1.00, 1.01 (0.89-1.15) and 1.19 (1.02-1.38) for the three tertiles of selenium consumption, respectively. Only overweight patients displayed a substantial positive connection between Se intake and the optimal sleep duration in the subgroup analysis. In summary, Se intake was significantly associated with optimal sleep duration.
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Roshanravan N, Koche Ghazi MK, Ghaffari S, Naemi M, Alamdari NM, Shabestari AN, Mosharkesh E, Soleimanzadeh H, Sadeghi MT, Alipour S, Bastani S, Tarighat-Esfanjani A. Sodium selenite and Se-enriched yeast supplementation in atherosclerotic patients: Effects on the expression of pyroptosis-related genes and oxidative stress status. Nutr Metab Cardiovasc Dis 2022; 32:1528-1537. [PMID: 35365371 DOI: 10.1016/j.numecd.2022.02.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 02/05/2022] [Accepted: 02/21/2022] [Indexed: 11/15/2022]
Abstract
BACKGROUND AND AIMS Atherosclerosis as a chronic inflammatory disorder of the arterial wall is the main leading cause of the cardiovascular disease (CVD). Caspase-dependent pyroptosis plays a pivotal role in the pathogenesis of CVD. Selenium (Se) is an important component of the antioxidant defense and plays a crucial role in cardiovascular health. This study aimed to investigate the effects of daily consumption of sodium selenite and Se-enriched yeast on the expression of pyroptosis-related genes, and biomarkers of oxidative stress in patients with atherosclerosis. METHODS AND RESULTS In this randomized, double-blinded, placebo-controlled clinical trial, 60 patients with atherosclerosis were recruited. Participants received 200 μg/day of sodium selenite, Se-enriched yeast, or placebo for 8 following weeks. The pyroptosis-related genes' mRNA expression in peripheral blood mononuclear cells (PBMCs) was assessed before and after the intervention. Also, the levels of superoxide dismutase (SOD), malondialdehyde (MDA), nitric oxide (NO), and glutathione peroxidases (GPX) were measured at baseline and following the intervention. Following sodium selenite and Se-enriched yeast supplementation, the relative expression levels of TLR4, ASC, NLRP3, and NF-κB1 were significantly downregulated (p < 0.05). Furthermore, the changes in GPX were significantly increased after selenite and yeast supplementation (p < 0.05). Also, selenite and yeast consumption caused a statistically significant decrease in the change of MDA level (p < 0.05). CONCLUSION In summary, these findings showed that Se supplementation may reduce inflammation through down-regulation of some pro-inflammatory genes, improving antioxidant defenses in atherosclerosis patients. Further research is required to come to a definite conclusion of selenium supplementation on the CVD risk. This study was registered on the Iranian Registry of Clinical Trials website (identifier: RCT20110123005670N28; https://www.irct.ir/).
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Affiliation(s)
- Neda Roshanravan
- Cardiovascular Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mahdiyeh Khabbaz Koche Ghazi
- Nutrition Research Center, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Samad Ghaffari
- Cardiovascular Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Naemi
- Nutrition Research Center, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Alireza Namazi Shabestari
- Department of Geriatric Medicine, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Erfan Mosharkesh
- Faculty of Veterinary Medicine, University of Tabriz, Tabriz, Iran
| | - Hamid Soleimanzadeh
- Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
| | | | - Shahriar Alipour
- Department of Clinical Biochemistry and Applied Cell Sciences, Faculty of Medicine, Urmia University of Medical Sciences, Urmia, Iran
| | - Sepideh Bastani
- Stem Cell And Regenerative Medicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Ali Tarighat-Esfanjani
- Nutrition Research Center, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran.
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7
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Chung S, Roy AK, Webster TJ. Selenium Nanoparticle Protection of Fibroblast Stress: Activation of ATF4 and Bcl-xL Expression. Int J Nanomedicine 2019; 14:9995-10007. [PMID: 31908455 PMCID: PMC6930226 DOI: 10.2147/ijn.s172236] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Accepted: 08/30/2018] [Indexed: 01/23/2023] Open
Abstract
Background In recent years, selenium nanostructures have been researched due to their antibacterial properties, low toxicity to mammalian cells, and high biological efficacy. However, the clinical implementation of the use of selenium has received mixed results, and there is much work needed to improve the understanding of the biological mechanisms involved in the observed cellular responses. Materials and methods In this work, an investigation into the mechanistic pathways of selenium nanoparticles (SeNPs) in biological systems was conducted by studying the changes in gene expression of ATF4, Bcl-xL, BAD2, HSP70, and SOD2 in non-cancerous human dermal fibroblasts (HDF) under oxidative stress, nutrient deprivation stress, and no treatment (control) conditions. Results This study revealed that SeNP incubation led to reduced internal reactive oxygen species (ROS) generation for all conditions tested, thus, providing a protective environment for HDF. At the stress conditions, the expression of ATF4 and Bcl-xL increased for cells treated with SeNP incubation, leading to attenuation of the cells under stress. These results also hint at reductive stress causing a detrimental impact to cell proliferation under routine cell passaging conditions. Conclusion In summary, this study highlights some possible mechanistic pathways implicated in the action of SeNPs that warrant further investigation (specifically, reducing stress conditions for HDF) and continues to support the promise of SeNPs in a wide range of medical applications.
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Affiliation(s)
- Stanley Chung
- Department of Chemical Engineering, Northeastern University, Boston, MA 02115, USA
| | - Amit K Roy
- Department of Chemical Engineering, Northeastern University, Boston, MA 02115, USA
| | - Thomas J Webster
- Department of Chemical Engineering, Northeastern University, Boston, MA 02115, USA
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Kershaw JL, Hall AJ. Mercury in cetaceans: Exposure, bioaccumulation and toxicity. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 694:133683. [PMID: 31394330 DOI: 10.1016/j.scitotenv.2019.133683] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 07/29/2019] [Accepted: 07/29/2019] [Indexed: 05/27/2023]
Abstract
The fate and transportation of mercury in the marine environment are driven by a combination of anthropogenic atmospheric and aquatic sources, as well as natural geological inputs. Mercury biomagnifies up the food chain, resulting in the bioaccumulation of toxic concentrations in higher trophic organisms even when concentrations in their habitat remain below the threshold level for direct toxicity. As a result, mercury exposure has been recognised as a health concern for both humans and top marine predators, including cetaceans. There appears to be no overall trend in the global measured concentrations reported in cetaceans between 1975 and 2010, although differences between areas show that the highest concentrations in recent decades have been measured in the tissues of Mediterranean odontocetes. There is increasing concern for the impacts of mercury on the Arctic marine ecosystem with changes in water temperatures, ocean currents, and prey availability, all predicted to affect exposure. The accumulation of mercury in various tissues has been linked to renal and hepatic damage as well as reported neurotoxic, genotoxic, and immunotoxic effects. These effects have been documented through studies on stranded and by-caught cetaceans as well as in vitro cell culture experiments. Demethylation of methylmercury and protection by selenium have been suggested as possible mercury detoxification mechanisms in cetaceans that may explain the very high concentrations measured in tissues of some species with no apparent acute toxicity. Thus, the ratio of selenium to mercury is of importance when aiming to determine the impact of the contaminant load at an individual level. The long-term population level effects of mercury exposure are unknown, and continued monitoring of odontocete populations in particular is advised in order to predict the consequences of mercury uptake on marine food chains in the future.
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Affiliation(s)
- Joanna L Kershaw
- Sea Mammal Research Unit, Scottish Oceans Institute, University of St Andrews, St Andrews KY16 8LB, UK.
| | - Ailsa J Hall
- Sea Mammal Research Unit, Scottish Oceans Institute, University of St Andrews, St Andrews KY16 8LB, UK
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9
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Chand A, Biswal HS. Hydrogen Bonds with Chalcogens: Looking Beyond the Second Row of the Periodic Table. J Indian Inst Sci 2019. [DOI: 10.1007/s41745-019-00140-w] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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10
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Kamali A, Amirani E, Asemi Z. Effects of Selenium Supplementation on Metabolic Status in Patients Undergoing for Coronary Artery Bypass Grafting (CABG) Surgery: a Randomized, Double-Blind, Placebo-Controlled Trial. Biol Trace Elem Res 2019; 191:331-337. [PMID: 30637662 DOI: 10.1007/s12011-019-1636-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2018] [Accepted: 01/10/2019] [Indexed: 11/28/2022]
Abstract
This study was carried out to evaluate the effects of selenium supplementation on glycemic control, lipid profiles, and biomarkers of inflammation and oxidative stress in patients undergoing for coronary artery bypass grafting (CABG) surgery. This randomized, double-blind, placebo-controlled trial was performed among 33 patients undergoing for CABG surgery, aged 40-85 years old. Subjects were randomly allocated into two groups to intake either 200 μg/day selenium supplements as selenium yeast (n = 17) or placebo (n = 16) for 4 weeks. Glycemic control, lipid profiles, and biomarkers of inflammation and oxidative stress were assessed at baseline and at the end of trial. After the 4-week intervention, selenium supplementation significantly decreased fasting plasma glucose (FPG) (β, 6.76 mg/dL; 95% CI, - 13.13, - 0.40; P = 0.03), insulin (β, - 1.14 μIU/mL; 95% CI, - 2.01, - 0.28; P = 0.01); homeostasis model of assessment-estimated insulin resistance (HOMA-IR) (β - 0.35; 95% CI, - 0.62, - 0.08; P = 0.01); and total-/HDL-cholesterol ratio (β - 0.31; 95% CI, - 0.51, - 0.09; P = 0.008); and significantly increased HDL-cholesterol levels (β, 2.72 mg/dL; 95% CI, 0.89, 4.55; P = 0.005) compared with the placebo. Moreover, selenium supplementation led to a significant reduction in high-sensitivity C-reactive protein (hs-CRP) (β, - 0.68 mg/L; 95% CI, - 1.18, - 0.17; P = 0.01) and malondialdehyde (MDA) (β, - 0.27 μmol/L; 95% CI, - 0.47, - 0.07; P = 0.009), and a significant elevation in total glutathione (GSH) levels (β, 77.33 μmol/L; 95% CI, 56.11, 98.55; P < 0.001) compared with the placebo. Selenium supplementation did not affect other metabolic profiles. Overall, our study demonstrated that selenium supplementation for 4 weeks to patients undergoing for CABG surgery had beneficial effects on FPG, insulin, HOMA-IR, total-/HDL-cholesterol ratio, HDL-cholesterol, hs-CRP, GSH, and MDA levels, but did not affect other metabolic profiles. Clinical trial registration number: http://www.irct.ir : IRCT2017090533941N22.
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Affiliation(s)
- Alireza Kamali
- Department of Anesthesiology, Faculty of Medicine, Arak University of Medical Sciences, Arak, Iran
| | - Elaheh Amirani
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Islamic Republic of Iran
| | - Zatollah Asemi
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Islamic Republic of Iran.
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Albuquerque RG, Tufik S, Andersen ML. Benefits of selenium in the treatment of depression and sleep disorders : Commentaries of the article "The selenium-containing compound 3-((4-chlorophenyl)selanyl)-1-methyl-1H-indole reverses depressive-like behavior induced by acute restraint stress in mice: modulation of oxido-nitrosative stress and inflammatory pathway". Sleep Breath 2019; 23:933-934. [PMID: 30840199 DOI: 10.1007/s11325-019-01816-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 02/19/2019] [Accepted: 02/23/2019] [Indexed: 11/29/2022]
Affiliation(s)
- Rachel G Albuquerque
- Department of Psychobiology, Universidade Federal de Sao Paulo, Rua Napoleao de Barros 925, Sao Paulo, SP, 04024-002, Brazil
| | - Sergio Tufik
- Department of Psychobiology, Universidade Federal de Sao Paulo, Rua Napoleao de Barros 925, Sao Paulo, SP, 04024-002, Brazil
| | - Monica L Andersen
- Department of Psychobiology, Universidade Federal de Sao Paulo, Rua Napoleao de Barros 925, Sao Paulo, SP, 04024-002, Brazil.
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12
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Czauderna M, Ruszczyńska A, Bulska E, Krajewska KA. Seleno-compounds and Carnosic Acid Added to Diets with Rapeseed and Fish Oils Affect Concentrations of Selected Elements and Chemical Composition in the Liver, Heart and Muscles of Lambs. Biol Trace Elem Res 2018; 184:378-390. [PMID: 29196872 DOI: 10.1007/s12011-017-1211-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Accepted: 11/22/2017] [Indexed: 12/21/2022]
Abstract
The objective of our studies was to investigate effects of carnosic acid (CA), selenized yeast (SeY) and selenate (SeVI) added to the diet including rapeseed oil (RO) and fish oil (FO) on concentrations of elements, fatty acids (FAs), tocopherols, cholesterol, and malondialdehyde in the liver, heart, musculus longissimus dorsi (MLD), and musculus biceps femoris (MBF) of lambs. Lambs were fed diets: group I-the basal diet (BD) with RO; group II-BD with RO and FO; group III-BD with RO, FO, and CA; group IV-BD with RO, FO, CA, and SeY; group V-BD with RO, FO, CA, and SeVI. The diets with Se compounds increased Se concentrations in all tissues compared with other diets. The diet with SeVI increased Cd, Sb, and Pb concentrations in the liver compared to groups I, II, and IV. The diets containing Se compounds increased Sb and Pb concentrations in MBF compared to groups I and II. All diets with CA reduced As, Sb, and Pb concentrations in MLD compared to groups I and II. All diets with FO increased concentrations of FAs and malondialdehyde in the liver compared to group I. All diets with FO decreased FAs concentrations in MBF compared to group I. The diets containing CA with/without Se compounds increased malondialdehyde concentrations in MBF compared to groups I and II. The diet with Se compounds reduced malondialdehyde concentrations in MLD compared to group II. All diets with FO changed concentrations of tocopherols and cholesterol in all tissues compared to group I. Our study showed that the addition of SeY or SeVI to the experimental diet increased the concentration of Se in all assayed tissues of lambs without adversely influencing performance or causing physiological disorders in internal organs. Both, SeY or SeVI added to the experimental diet decreased the oxidative stress and the concentrations of As, Sb, and Pb in MLD compared with the diets containing RO, irrespective of the presence of FO (groups I and II). Our study provides useful knowledge for nutritionists carrying out further investigations aimed at improving farm animal health, performance, and the nutritional quality of animal products for humans.
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Affiliation(s)
- Marian Czauderna
- The Kielanowski Institute of Animal Physiology and Nutrition, Polish Academy of Sciences, 05-110, Jabłonna, Poland.
| | - Anna Ruszczyńska
- Faculty of Chemistry, Biological and Chemical Research Centre, University of Warsaw, Żwirki i Wigury 101, 02-089, Warsaw, Poland
| | - Ewa Bulska
- Faculty of Chemistry, Biological and Chemical Research Centre, University of Warsaw, Żwirki i Wigury 101, 02-089, Warsaw, Poland
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Albuquerque RG, Hirotsu C, Tufik S, Andersen ML. Why Should We Care About Selenium in Obstructive Sleep Apnea? J Clin Sleep Med 2017; 13:931-932. [PMID: 28502283 DOI: 10.5664/jcsm.6674] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Accepted: 04/12/2017] [Indexed: 12/21/2022]
Affiliation(s)
| | - Camila Hirotsu
- Department of Psychobiology - Universidade Federal de São Paulo, São Paulo, Brazil
| | - Sergio Tufik
- Department of Psychobiology - Universidade Federal de São Paulo, São Paulo, Brazil
| | - Monica Levy Andersen
- Department of Psychobiology - Universidade Federal de São Paulo, São Paulo, Brazil
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Li Z, Tan J, Shao L, Dong X, Ye RD, Chen D. Selenium-mediated protection in reversing the sensitivity of bacterium to the bactericidal antibiotics. J Trace Elem Med Biol 2017; 41:23-31. [PMID: 28347459 DOI: 10.1016/j.jtemb.2017.02.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Revised: 01/12/2017] [Accepted: 02/08/2017] [Indexed: 02/07/2023]
Abstract
Inducing production of damaging reactive oxygen species (ROS) is an important criterion to distinguish the bactericidal antibiotics from bacteriostatic antibiotics. Selenoenzymes were generally recognized to be a powerful antioxidant capable of scavenging free radicals, protecting the cells from the harmful effects of ROS. Therefore, the present study was carried out to investigate the selenium (Se)-mediated protection in reversing antibiotic sensitivity and the role of selenoenzymes in alleviating the negative effects of oxidative stress. The cellular antioxidant activity of Se-enriched bacteria was analyzed, as well as intracellular ROS production and elimination when Se-enriched bacteria in the presence of various antibiotics. Compared to complete inhibition of the parental strain by bactericidal antibiotics, it only exhibited slight and reversible inhibition of Se-enriched Escherichia coli ATCC25922 and Staphylococcus aureus ATCC25923 at the same conditions, which indicated that intracellular selenium provided substantial protection against antibiotics. ROS generation caused by bactericidal antibiotics was confirmed by fluorescence spectrophotometry using 2', 7'-dichloro- uorescein diacetate (DCFH-DA) as substrate. The time course experiments of pretreatment with selenium showed significant decrease of ROS level at 2h. In summary, the present study provides experimental evidence supporting selenoenzymes has good scavenging effect to ROS and can protect bacteria from oxidative stress injury induced by bactericidal antibiotics.
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Affiliation(s)
- Zhonglei Li
- School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, China; China State Institute of Pharmaceutical Industry, Shanghai Institute of Pharmaceutical Industry, Shanghai 201203, China
| | - Jun Tan
- China State Institute of Pharmaceutical Industry, Shanghai Institute of Pharmaceutical Industry, Shanghai 201203, China
| | - Lei Shao
- China State Institute of Pharmaceutical Industry, Shanghai Institute of Pharmaceutical Industry, Shanghai 201203, China
| | - Xiaojing Dong
- China State Institute of Pharmaceutical Industry, Shanghai Institute of Pharmaceutical Industry, Shanghai 201203, China
| | - Richard D Ye
- School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Daijie Chen
- School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, China; China State Institute of Pharmaceutical Industry, Shanghai Institute of Pharmaceutical Industry, Shanghai 201203, China.
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Lee YH, Lee SJ, Lee MK, Lee WY, Yong SJ, Kim SH. Serum selenium levels in patients with respiratory diseases: a prospective observational study. J Thorac Dis 2016; 8:2068-78. [PMID: 27621861 DOI: 10.21037/jtd.2016.07.60] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND Serum selenium levels are lower in critically ill patients as compared with healthy controls. However, there is no data about the difference in serum selenium levels depending on the severity of lung diseases. We aimed to identify the factors associated with low serum selenium levels in critically ill patients with respiratory diseases. METHODS A prospective study was performed in 83 patients with respiratory diseases who had admitted to the intensive care unit (ICU) and general wards. We obtained systemic inflammatory markers, nutritional indicators and prognostic factors as the explanatory variables for the outcome of low serum selenium levels. RESULTS Serum selenium levels on admission were lower by 28% in the ICU group as compared with the general ward group (70.0±26.4 and 97.9±20.8 ng/mL, respectively, P<0.001). Low serum selenium levels had a correlation with malnutrition represented by decreases in levels of lymphocyte (R(2)=0.107, P=0.005) and albumin (R(2)=0.174, P<0.001). In addition, low serum selenium levels were associated with an increase in baseline C-reactive protein (CRP) (R(2)=0.059, P=0.041) and APACHE II scores (R(2)=0.209, P<0.001). Lower albumin levels (P=0.032) and higher APACHE II scores (P=0.046) showed a significant correlation with lower serum selenium levels on multivariate analysis. CONCLUSIONS Low serum selenium levels in patients with respiratory diseases have a significant correlation with poor nutritional status and prognosis on admission.
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Affiliation(s)
- Yo-Han Lee
- Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Seok Jeong Lee
- Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Myoung Kyu Lee
- Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Won-Yeon Lee
- Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Suk Joong Yong
- Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Sang-Ha Kim
- Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
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Овсянникова ТА, Кричковская ЛВ. ВЛИЯНИЕ МОЛОЧНОЙ КИСЛОТЫ НА КАЧЕСТВО ХЛЕБОБУЛОЧНЫХ ИЗДЕЛИЙ И ПОТЕРИ МИКРОЭЛЕМЕНТОВ ПРИ ВЫПЕКАНИИ И ХРАНЕНИИ. FOOD SCIENCE AND TECHNOLOGY 2016. [DOI: 10.15673/fst.v10i2.153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
В статье представлен обзор литературы и собственные экспериментальные данные, касающиесявлияния молочной кислоты на качество выпечки и содержание микроэлементов в хлебобулочных изделиях после вве-дения в рецептуру хлебопекарных дрожжей, обогащенных йодом и селеном с молочной кислотой. Главной целью ра-боты явилось определение влияния этой органической кислоты в составе обогащенных хлебопекарных дрожжей напоказатели качества выпечки, на сохранность микроэлементов в хлебобулочных изделиях после выпечки и при даль-нейшем хранении. Экспериментально определено содержание йода и селена в хлебе и батоне после выпечки, резуль-таты сравнены с расчетными и литературными данными. Исследовано влияние молочной кислоты на сохранностьмикроэлементов при длительном хранении хлебобулочных изделий.
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Vinceti M, Grill P, Malagoli C, Filippini T, Storani S, Malavolti M, Michalke B. Selenium speciation in human serum and its implications for epidemiologic research: a cross-sectional study. J Trace Elem Med Biol 2015; 31:1-10. [PMID: 26004885 DOI: 10.1016/j.jtemb.2015.02.001] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Revised: 02/10/2015] [Accepted: 02/13/2015] [Indexed: 12/27/2022]
Abstract
Observational studies addressing the relation between selenium and human health, particularly cancer risk, yielded inconsistent results, while most recent randomized trials showed a fairly consistent pattern suggesting null or adverse effects of the metalloid. One of the most plausible explanations for such inconsistencies is inadequate exposure assessment in observational studies, commonly carried out by measuring total Se content without taking into account the specific exposure to the individual chemical forms of the metalloid, whose toxic and nutritional properties may vary greatly. Data on the distribution of these species in human blood and their correlation with overall selenium levels are very limited. The concentrations of organic and inorganic selenium species were analyzed in serum of fifty subjects sampled from the general population of the municipality of Modena, northern Italy, aged from 35 to 70 years. Samples were collected during a 30-month period, and determinations of selenium species were carried out using high pressure liquid chromatography coupled with inductively coupled plasma dynamic reaction cell mass spectrometry. The majority of selenium was found to be present as organic species, but the inorganic forms showed higher levels than expected. These species showed limited correlations with age, sex and body mass index, while the organic forms increased in subjects consuming selenium-containing dietary supplements and decreased in smokers. The length of the sample storage period strongly influenced the distribution of selenium compounds, with a clear tendency towards higher inorganic and lower organic selenium levels over time. In multivariate analysis adjusting for potential confounders, total serum selenium correlated with human serum albumin-bound selenium and, in males, with two organic species of the metalloid (selenocysteine and glutathione peroxidase-bound selenium), while little association existed with the other organic forms and the inorganic ones. These findings highlight the potential for exposure misclassification of observational epidemiologic investigations based on overall selenium content in blood and possibly other tissues, and the critical role of the storage conditions for speciation analysis.
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Affiliation(s)
- Marco Vinceti
- Environmental, Genetic and Nutritional Epidemiology Research Center (CREAGEN), Department of Diagnostic, Clinical and Public Health Medicine, University of Modena and Reggio Emilia, Reggio Emilia, Italy.
| | - Peter Grill
- Research Unit Analytical BioGeoChemistry, Helmholtz Zentrum München - German Research Center for Environmental Health GmbH, Munich, Germany
| | - Carlotta Malagoli
- Environmental, Genetic and Nutritional Epidemiology Research Center (CREAGEN), Department of Diagnostic, Clinical and Public Health Medicine, University of Modena and Reggio Emilia, Reggio Emilia, Italy
| | - Tommaso Filippini
- Environmental, Genetic and Nutritional Epidemiology Research Center (CREAGEN), Department of Diagnostic, Clinical and Public Health Medicine, University of Modena and Reggio Emilia, Reggio Emilia, Italy
| | - Simone Storani
- Environmental, Genetic and Nutritional Epidemiology Research Center (CREAGEN), Department of Diagnostic, Clinical and Public Health Medicine, University of Modena and Reggio Emilia, Reggio Emilia, Italy
| | - Marcella Malavolti
- Environmental, Genetic and Nutritional Epidemiology Research Center (CREAGEN), Department of Diagnostic, Clinical and Public Health Medicine, University of Modena and Reggio Emilia, Reggio Emilia, Italy
| | - Bernhard Michalke
- Research Unit Analytical BioGeoChemistry, Helmholtz Zentrum München - German Research Center for Environmental Health GmbH, Munich, Germany
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Forceville X, Touati S, Le Toumelin P, Ducros V, Laporte F, Chancerelle Y, Agay D. Elements of margin of safety, toxicity and action of sodium selenite in a lipopolysaccharide rat model. J Trace Elem Med Biol 2014; 28:303-10. [PMID: 24813451 DOI: 10.1016/j.jtemb.2014.03.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2013] [Revised: 02/20/2014] [Accepted: 03/31/2014] [Indexed: 12/25/2022]
Abstract
PROJECT Both septic shock and sodium selenite (Na2SeO3) lead to multiple organ failure through oxidation. Na2SeO3 has direct oxidant effects above the nutritional level and indirect anti-oxidant properties. In a lipopolysaccharide (LPS) rat model we assessed margin of safety, toxicity and beneficial effect of pentahydrate Na2SeO3 (5H2O·Na2SeO3) at oxidant doses. PROCEDURE In a three-step study on 204 rats we: (i) observed toxic effects of Na2SeO3 injected intraperitoneously (IP) and determined its Minimum Dose Without Toxic effect (MDWT) 0.25-0.35 mg/kg selenium (Se) content; (ii) injected IP LPS at 70% lethal dose (LD) followed, or not, one hour later by IP Na2SeO3 at MDWT and (iii) by doses>MDWT. At 48 h, in survivors, we measured plasma creatinine, lactate, aspartate and alanine aminotransferase (AST, ALT), nitric oxide (NO) and Se concentrations. RESULTS (i) Na2SeO3 alone did not increase NO and lactate. Encephalopathy appeared at 1mg Se/kg. Creatinine increased at 1-1.75 mg Se/kg, AST, ALT at 3-4.5 mg Se/kg, and the minimum LD was 3 mg Se/kg. (ii) Mortality after LPS was 37/50 (74%, [62-86%]) vs. 20/30 (67%, [50-84%]) when followed by Na2SeO3 at MDWT (p=0.483) with a decreased in NO (-31%, p=0.038) a trend for lactate decrease (-19%, p=0.068) and an increased Se in plasma of survivals. (iii) All rats died at doses ≥0.6 mg/kg (p<0.001). CONCLUSION Mechanisms of LPS and Na2SeO3 toxicity differ (i.e. NO, lactate). In septic shock 5H2O·Na2SeO3 toxicity increased, margin of safety decrease, but IP administration of dose considered as oxidant of 5H2O·Na2SeO3 showed beneficial effects.
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Affiliation(s)
- Xavier Forceville
- Centre Hospitalier de Meaux, Réanimation Polyvalente, 77104 Meaux, France.
| | - Samia Touati
- Centre Hospitalier de Meaux, Réanimation Polyvalente, 77104 Meaux, France
| | | | - Véronique Ducros
- CHU de Grenoble, Département de Biochimie Toxicologie & Pharmacologie, UF de Biochimie Hormonologie & Nutrition, BP 217, 38043 Grenoble cedex 9, France
| | - François Laporte
- CHU de Grenoble, Département de Biochimie Toxicologie & Pharmacologie, UF de Biochimie Hormonologie & Nutrition, BP 217, 38043 Grenoble cedex 9, France
| | - Yves Chancerelle
- Institut de Recherche Biomédicale des Armées, Département des Effets Biologiques des Rayonnements, 24 avenue des Maquis du Grésivaudan - BP 87, 38702 La Tronche, France
| | - Diane Agay
- Institut de Recherche Biomédicale des Armées, Département des Effets Biologiques des Rayonnements, 24 avenue des Maquis du Grésivaudan - BP 87, 38702 La Tronche, France
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Landucci F, Mancinelli P, De Gaudio AR, Virgili G. Selenium supplementation in critically ill patients: a systematic review and meta-analysis. J Crit Care 2013; 29:150-6. [PMID: 24135013 DOI: 10.1016/j.jcrc.2013.08.017] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2013] [Revised: 08/02/2013] [Accepted: 08/25/2013] [Indexed: 11/15/2022]
Abstract
PURPOSE The oxidative stress is recognized as a constant feature in critical illness. Nevertheless, the use of antioxidant therapy remains controversial. We tried to demonstrate that intravenous selenium supplementation could promote antioxidant status and help protect against infection and organ failure, improving outcome in critically ill patients. MATERIALS AND METHODS We conducted a systematic review and meta-analysis of randomized controlled trials (RCTs) comparing the exogenous supplementation of selenium versus standard therapy without any adjuvant in critically ill adults. RESULTS Nine RCTs met inclusion criteria. Selenium supplementation was associated with a reduction in 28-day mortality of borderline statistical significance (risk ratio = 0.84, 95% confidence interval 0.71-0.99, P = .04). The analysis of pre-defined subgroups detected no significant effects regarding the supplementation with doses of selenium ≤ 500 μg/d, administration of a load dose with a bolus and duration of treatment. Only 2 studies analyzed 6-month mortality and could not show a difference. No effects could be demonstrated on hospital length of stay, pulmonary infections, or renal failure. CONCLUSIONS The use of high-dose selenium might be associated with a beneficial effect on 28-day mortality in critically ill patients. Nevertheless, the use of selenium as adjuvant therapy needs further evaluations.
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Affiliation(s)
- Francesco Landucci
- Department of Health Sciences, Section of Anesthesiology, Intensive Care and Pain, University of Florence, Italy
| | - Paola Mancinelli
- Department of Health Sciences, Section of Anesthesiology, Intensive Care and Pain, University of Florence, Italy.
| | - A Raffaele De Gaudio
- Department of Health Sciences, Section of Anesthesiology, Intensive Care and Pain, University of Florence, Italy
| | - Gianni Virgili
- Department of Translational Surgery and Medicine, University of Florence, Italy
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Langlois PL, Manzanares W, Hardy G. Thérapie par sélénite de sodium chez le patient aux soins intensifs: supplémentation ou intervention pharmacologique ? MEDECINE INTENSIVE REANIMATION 2013. [DOI: 10.1007/s13546-013-0717-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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The effect of selenium therapy on mortality in patients with sepsis syndrome: a systematic review and meta-analysis of randomized controlled trials. Crit Care Med 2013; 41:1555-64. [PMID: 23587641 DOI: 10.1097/ccm.0b013e31828a24c6] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
BACKGROUND Patients with sepsis syndrome commonly have low serum selenium levels. Several randomized controlled trials have examined the efficacy of selenium supplementation on mortality in patients with sepsis. OBJECTIVE To determine the efficacy and safety of high-dose selenium supplementation compared to placebo for the reduction of mortality in patients with sepsis. SOURCES OF DATA We searched Cochrane Central Register of Controlled Trials, MEDLINE, EMBASE, SciFinder, and Clinicaltrials.gov. SELECTION CRITERIA Randomized controlled parallel group trials comparing selenium supplementation in doses greater than daily requirement to placebo on the outcome of mortality in patients with sepsis syndrome. DATA COLLECTION AND ANALYSIS Two reviewers independently applied eligibility criteria, assessed quality, and extracted data. The primary outcome was mortality; secondary outcomes were ICU length of stay, nosocomial pneumonia, and adverse events. Trial authors were contacted for additional or clarifying information. RESULTS Nine trials enrolling a total of 792 patients were included. Selenium supplementation in comparison to placebo was associated with lower mortality (odds ratio, 0.73; 95% CI, 0.54, 0.98; p = 0.03; I = 0%). Among patients receiving and not receiving selenium, there was no difference in ICU length of stay (mean difference, 2.03; 95% CI, -0.51, 4.56; p = 0.12; I = 0%) or nosocomial pneumonia (odds ratio, 0.83; 95% CI, 0.28, 2.49; p = 0.74; I = 56%). Significant heterogeneity among trials in adverse event reporting precluded pooling of results. CONCLUSIONS In patients with sepsis, selenium supplementation at doses higher than daily requirement may reduce mortality. We observed no impact of selenium on ICU length of stay or risk of nosocomial pneumonia.
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Visser J, Labadarios D, Blaauw R. Micronutrient supplementation for critically ill adults: a systematic review and meta-analysis. Nutrition 2011; 27:745-58. [PMID: 21679878 DOI: 10.1016/j.nut.2010.12.009] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2010] [Revised: 12/05/2010] [Accepted: 12/05/2010] [Indexed: 01/27/2023]
Abstract
OBJECTIVE This systematic review assessed the effects of micronutrient supplementation on adults recovering from critical illness. Primary outcomes included clinical endpoints (mortality, infectious complications, length of intensive care unit and of hospital stay). Secondary outcomes included descriptions of practice issues, micronutrient status, morbidity, course of the acute-phase response, and oxidative stress. METHODS Electronic bibliographic databases, bibliographies of retrieved articles, and personal files were searched and reviewed. Randomized controlled trials (RCTs) of micronutrient supplementation in adult critically ill patients administered enterally and/or parenterally in addition to their routine care were included. Two authors independently extracted data and assessed trial quality. The random-effects model was used to estimate overall relative risk (RR)/mean difference and effect size. P<0.05 was considered statistically significant. RESULTS Fifteen (n=1714) and 18 (n=1849) RCTs were included for the primary and secondary objectives, respectively. Fourteen trials (n=1468) showed a statistically significant decrease in overall mortality (RR 0.78, 95% confidence interval 0.67-0.90, I2=0%, P=0.0009). Six RCTs (n=1194) indicated a statistically significant decrease in 28-d mortality (RR 0.75, 95% confidence interval 0.63-0.88, I2=0%, P=0.0006). Micronutrient supplementation was not associated with a decrease in infectious complications, length of intensive care unit, or length of hospital stay. In subgroup analyses, a sensitivity analysis of combined micronutrients indicated a significant decrease in mortality (RR 0.69, 95% confidence interval 0.54-0.90, I2=2%, P=0.006). The secondary outcomes confirmed that timing, duration, and dosing appear to be key factors to ensure optimal clinical benefit. CONCLUSION This review does suggest a potential benefit of micronutrient supplementation in critically ill adults by possibly being associated with a decrease in mortality.
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Affiliation(s)
- Janicke Visser
- Division of Human Nutrition, Stellenbosch University and Tygerberg Academic Hospital, South Africa.
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Forceville X, Vitoux D, Wasowicz W, Dehoux M, Van Antwerpeen P, Annane D, Plouvier E, Boutten A, Gromadzinska J, Laviolle B, Combes A, Bellissant E. Clinical and biological effects of high-dose sodium selenite, continuously administered in septic shock. Crit Care 2011. [PMCID: PMC3239259 DOI: 10.1186/cc10385] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Does Selenium Supplementation Improve Outcomes in Critically Ill Patients With Sepsis? TOP CLIN NUTR 2011. [DOI: 10.1097/tin.0b013e31821930b9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Durmus AS, Yildiz H, Yaman I, Simsek H. Efficacy of vitamin E and selenium for the prevention of intra-abdominal adhesions in rats: uterine horn models. Clinics (Sao Paulo) 2011; 66:1247-51. [PMID: 21876982 PMCID: PMC3148472 DOI: 10.1590/s1807-59322011000700021] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2011] [Accepted: 03/25/2011] [Indexed: 12/16/2022] Open
Abstract
OBJECTIVE This study compares the efficacies of vitamin E and selenium, both individually and in combination, for the prevention of postoperative intra-abdominal adhesions in rats. METHODS Forty-seven female rats were divided into five groups. The sham animals (S group, n = 7) were given only laparotomies and intraperitoneally received 0.9% NaCl (2 ml). In the 40 other rats, abrasions of the left uterine horn were performed, followed by intraperitoneal administration of either 2 ml 0.9% NaCl (C group), 10 mg vitamin E (vitamin E group), 0.2 mg/kg selenium (Se group) or 10 mg vitamin E with 0.2 mg/kg selenium (vitamin E + Se group), with 10 animals in each treatment group. RESULTS Adhesion formation was significantly reduced in animals in the Se and vitamin E + Se groups (p<0.05). Tissue catalase and glutathione peroxidase activities did not significantly differ between the groups. However, catalase and glutathione peroxidase activities and reduced glutathione levels were slightly increased in the vitamin E, Se and vitamin E + Se groups. In the vitamin E group, malondialdehyde concentrations were significantly lower than in the C group (p<0.05), but no significant differences were present among the S, C, Se and vitamin E + Se groups. Levels of nitric oxide were significantly higher in the C group than in the other groups (p<0.01). CONCLUSION Intraperitoneal administration of selenium or combined vitamin E and selenium appears to be effective in preventing intra-abdominal adhesion formation in rat models through the reduction of lipid peroxidation products.
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Affiliation(s)
- Ali Said Durmus
- Department of Surgery, Faculty of Veterinary Medicine, Firat University, Elazig, Turkey.
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Manzanares W, Biestro A, Galusso F, Torre MH, Mañáy N, Facchin G, Hardy G. High-dose selenium for critically ill patients with systemic inflammation: Pharmacokinetics and pharmacodynamics of selenious acid: A pilot study. Nutrition 2010; 26:634-40. [DOI: 10.1016/j.nut.2009.06.022] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2009] [Revised: 06/15/2009] [Accepted: 06/26/2009] [Indexed: 11/30/2022]
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A LARGE-BOLUS INJECTION, BUT NOT CONTINUOUS INFUSION OF SODIUM SELENITE IMPROVES OUTCOME IN PERITONITIS. Shock 2009; 32:140-6. [DOI: 10.1097/shk.0b013e318193c35d] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Safarinejad MR, Safarinejad S. Efficacy of selenium and/or N-acetyl-cysteine for improving semen parameters in infertile men: a double-blind, placebo controlled, randomized study. J Urol 2009; 181:741-51. [PMID: 19091331 DOI: 10.1016/j.juro.2008.10.015] [Citation(s) in RCA: 128] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2008] [Indexed: 01/12/2023]
Abstract
PURPOSE We explored the efficacy of selenium and/or or N-acetyl-cysteine for improving semen parameters in infertile men, and the associations among semen quality and the concentrations of selenium and N-acetyl-cysteine in seminal plasma. MATERIALS AND METHODS The study included 468 infertile men with idiopathic oligo-asthenoteratospermia who were randomized to receive 200 microg selenium orally daily (selenium group of 116), 600 mg N-acetyl-cysteine orally daily (N-acetyl-cysteine group of 118), 200 microg selenium plus 600 mg N-acetyl-cysteine orally daily (selenium plus N-acetyl-cysteine group of 116) or similar regimen of placebo (control group of 118) for 26 weeks, followed by a 30-week treatment-free period. These patients provided blood samples for the measurement of serum testosterone, estradiol, follicle-stimulating hormone, luteinizing hormone, prolactin, inhibin B, selenium and N-acetyl-cysteine. Semen samples were also obtained for routine semen analysis, and the measurement of seminal plasma selenium and N-acetyl-cysteine. RESULTS In response to selenium and N-acetyl-cysteine treatment serum follicle-stimulating hormone decreased but serum testosterone and inhibin B increased. All semen parameters significantly improved with selenium and N-acetyl-cysteine treatment. Administering selenium plus N-acetyl-cysteine resulted in additive beneficial effects. A significant positive correlation existed between the seminal plasma concentrations of selenium and N-acetyl-cysteine, and semen parameters. A strong correlation was observed between the sum of the selenium and N-acetyl-cysteine concentrations, and mean sperm concentration (r = 0.67, p = 0.01), sperm motility (r = 0.64, p = 0.01) and percent normal morphology (r = 0.66, p = 0.01). CONCLUSIONS These results indicate that supplemental selenium and N-acetyl-cysteine improve semen quality. We advocate their use for male infertility treatment.
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Affiliation(s)
- Mohammad Reza Safarinejad
- Urology and Nephrology Research Center, Shahid Beheshti University, MC, Tehran, Islamic Republic of Iran.
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Sendur OF, Tastaban E, Turan Y, Ulman C. The relationship between serum trace element levels and clinical parameters in patients with fibromyalgia. Rheumatol Int 2008; 28:1117-21. [PMID: 18496697 DOI: 10.1007/s00296-008-0593-9] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2007] [Accepted: 04/29/2008] [Indexed: 11/27/2022]
Abstract
We examined the association between serum trace elements and clinical findings such as number of sensitive tender points, severity of fatigue and functional status in patients with fibromyalgia (FM). Thirty-two patients diagnosed as having FM according to the ACR 1990 criteria and 32 normal healthy controls (NHC) were included in this study. The demographic data, disease duration, number of tender points and accompanying symptoms (fatigue, sleep disorders, headache, paresthesia, irritable bowel syndrome, sicca symptoms, Raynaud's phenomena) of the patients were noted. Visual analog scale (10 cm) was implemented to estimate daily severity of pain and fatigue. Fibromyalgia impact questionnaire was used for functional assessment. Serum selenium (microg/dL) and serum zinc (microg/dL) levels were measured by atomic absorption spectrometer. Serum magnesium (mmol/L) level was measured by the original kits of Abbott Aeroset auto-analyzer. The mean age of patients in FM group and NHC were calculated as 42.9 (SD = 7.7) years and 41.3 (SD = 9.7) years, respectively. Serum levels of zinc (P = 0.001) and magnesium (P = 0.002) were significantly decreased by FM groups, whereas there was no considerable difference with selenium levels of both groups (P > 0.05). Association between serum zinc level and number of tender points (P = 0.008) and that between fatigue and magnesium level (P = 0.003) was found as meaningful. According to the results of this study, it was asserted that serum magnesium and zinc levels may play an important role in the pathophysiology of FM.
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Affiliation(s)
- Omer Faruk Sendur
- Department of Physical Medicine and Rehabilitation, Adnan Menderes University Medicine School Hospital, Aydin, Turkey
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Forceville X, Laviolle B, Annane D, Vitoux D, Bleichner G, Korach JM, Cantais E, Georges H, Soubirou JL, Combes A, Bellissant E. Effects of high doses of selenium, as sodium selenite, in septic shock: a placebo-controlled, randomized, double-blind, phase II study. Crit Care 2008; 11:R73. [PMID: 17617901 PMCID: PMC2206523 DOI: 10.1186/cc5960] [Citation(s) in RCA: 153] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2007] [Revised: 03/28/2007] [Accepted: 07/06/2007] [Indexed: 11/10/2022] Open
Abstract
INTRODUCTION Sepsis is associated with the generation of oxygen free radicals and (lacking) decreased selenium plasma concentrations. High doses of sodium selenite might reduce inflammation by a direct pro-oxidative effect and may increase antioxidant cell capacities by selenium incorporation into selenoenzymes. We investigated the effects of a continuous administration of high doses of selenium in septic shock patients. METHODS A prospective, multicentre, placebo-controlled, randomized, double-blind study was performed with an intention-to-treat analysis in severe septic shock patients with documented infection. Patients received, for 10 days, selenium as sodium selenite (4,000 microg on the first day, 1,000 microg/day on the nine following days) or matching placebo using continuous intravenous infusion. The primary endpoint was the time to vasopressor therapy withdrawal. The duration of mechanical ventilation, the mortality rates in the intensive care unit, at hospital discharge, and at 7, 14, 28 and 180 days and 1 year after randomization, and adverse events were recorded. RESULTS Sixty patients were included (placebo, n = 29; selenium, n = 31). The median time to vasopressor therapy withdrawal was 7 days in both groups (95% confidence interval = 5-8 and 6-9 in the placebo and selenium groups, respectively; log-rank, P = 0.713). The median duration of mechanical ventilation was 14 days and 19 days in the placebo and selenium groups, respectively (P = 0.762). Mortality rates did not significantly differ between groups at any time point. Rates of adverse events were similar in the two groups. CONCLUSION Continuous infusion of selenium as sodium selenite (4,000 microg on the first day, 1,000 microg/day on the nine following days) had no obvious toxicity but did not improve the clinical outcome in septic shock patients. Trial Registration = NCT00207844.
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Affiliation(s)
- Xavier Forceville
- Service de Réanimation Polyvalente, Centre Hospitalier de Meaux, Hôpital Saint Faron, 6–8 rue Saint Fiacre, 77104 Meaux, France
| | - Bruno Laviolle
- Centre d'Investigation Clinique INSERM 0203, Unité de Pharmacologie Clinique, Hôpital de Pontchaillou, CHU de Rennes et Université de Rennes 1, 2 rue Henri le Guilloux, 35033 Rennes, France
| | - Djillali Annane
- Service de Réanimation Médicale, Hôpital Raymond Poincaré, 104 boulevard Raymond Poincaré, 92380 Garches, France
| | - Dominique Vitoux
- Service de Biochimie A, Hôpital Saint-Louis, avenue Claude Vellefaux, 75475 Paris cedex 10, France
| | - Gérard Bleichner
- Service de Réanimation Polyvalente, Centre Hospitalier Victor Dupouy, 69 rue du Lieut-Col Prudhon, 95107 Argenteuil cedex, France
| | - Jean-Michel Korach
- Service de Réanimation Polyvalente, Centre Hospitalier, 51 rue du Commandant Derrien, 51005 Châlons en Champagne cedex, France
| | - Emmanuel Cantais
- Hôpital d'Instruction des Armées Sainte Anne, boulevard Sainte Anne, 83800 Toulon Naval, France
| | - Hugues Georges
- Centre Hospitalier Gustave Dron, 135 rue du Président Coty, 59200 Tourcoing, France
| | - Jean-Louis Soubirou
- Hôpital d'Instruction des Armées Desgenettes, 108 boulevard Pinel, 69003 Lyon, France
| | - Alain Combes
- Service de Réanimation Polyvalente, Centre Hospitalier de Meaux, Hôpital Saint Faron, 6–8 rue Saint Fiacre, 77104 Meaux, France
| | - Eric Bellissant
- Centre d'Investigation Clinique INSERM 0203, Unité de Pharmacologie Clinique, Hôpital de Pontchaillou, CHU de Rennes et Université de Rennes 1, 2 rue Henri le Guilloux, 35033 Rennes, France
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Weber SU, Lehmann LE, Schewe JC, Thiele JT, Schröder S, Book M, Hoeft A, Stüber F. Low serum alpha-tocopherol and selenium are associated with accelerated apoptosis in severe sepsis. Biofactors 2008; 33:107-19. [PMID: 19346586 DOI: 10.1002/biof.5520330203] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
During sepsis, a severe systemic disorder, micronutrients often are decreased. Apoptosis is regarded as an important mechanism in the development of often significant immunosuppression in the course of the disease. This study aimed to investigate alpha-tocopherol and selenium in reference to apoptosis in patients with sepsis. 16 patients were enrolled as soon as they fulfilled the criteria of severe sepsis. 10 intensive care patients without sepsis and 11 healthy volunteers served as controls. alpha-Tocopherol, selenium and nucleosomes were measured in serum. Phosphatidylserine externalization and Bcl-2 expression were analyzed in T-cells by flow cytometry. Serum alpha-tocopherol and selenium were decreased in severe sepsis but not in non-septic critically ill patients (p < 0.05). Conversely, markers of apoptosis were increased in sepsis but not in critically ill control patients: Nucleosomes were found to be elevated 3 fold in serum (p < 0.05) and phosphatidylserine was externalized on an expanded subpopulation of T-cells (p < 0.05) while Bcl-2 was expressed at lower levels (p < 0.05). The decrease of micronutrients correlated with markers of accelerated apoptosis. Accelerated apoptosis in sepsis is associated with low alpha-tocopherol and selenium. The results support the investigation of micronutrient supplementation strategies in severe sepsis.
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Affiliation(s)
- Stefan U Weber
- Department of Anesthesiology and Intensive Care Medicine, University of Bonn Medical Center, Bonn, Germany.
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Forceville X, Van Antwerpen P. Selenocompounds and Selenium: A Biochemical Approach to Sepsis. Intensive Care Med 2008. [DOI: 10.1007/978-0-387-77383-4_43] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Forceville X. Effects of high doses of selenium, as sodium selenite, in septic shock patients a placebo-controlled, randomized, double-blind, multi-center phase II study--selenium and sepsis. J Trace Elem Med Biol 2007; 21 Suppl 1:62-5. [PMID: 18039501 DOI: 10.1016/j.jtemb.2007.09.021] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2007] [Accepted: 09/12/2007] [Indexed: 11/28/2022]
Abstract
Selenium has a double action. (i) Seleno-compounds, among them sodium selenite have a direct pro-oxidant action leading to acute toxicity but may be also beneficial as drug. (ii) Selenium is an essential anti-oxidant required for anti-oxidant seleno-enzymes. Septic shock is a common severe syndrome leading to endothelium damage and multiple organ failure, with increased data suggesting the principle role of oxidative stress. Selenoprotein P, main selenium constituent of the plasma, may decrease dramatically and specifically in septic shock patients and may be involved in the endothelium protection. A prospective, multi-center placebo-controlled, randomized, double-blind study in severe septic shock patients with documented infection has been preformed. Patients received, for 10 days, selenium as sodium selenite (4000 microg on the first day, 1000 microg/day on the 9 following days) or matching placebo using continuous intravenous infusion. Mortality rates did not significantly differ between groups at any time point. Adverse events rates were similar in the two groups. However, high-dose selenium administration has been associated with a tendency to decrease the mortality in septic shock animal and patients, especially when using a bolus administration, whereas studies using a continuous administration failed to find any benefit on mortality. The interest of the successive use of pro-oxidant action of seleno-compounds, followed by anti-oxidant action need to be the further studied in cellular and animal models, preceding new dose-effect phase II. The interest of the selenoprotein-P as a marker of septic shock and for endothelium protection needs also to be studied further.
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Affiliation(s)
- Xavier Forceville
- CH Meaux, Hôpital Saint Faron, Réanimation Polyvalente, 6-8 Rue Saint Fiacre, BP 77104 Meaux, France.
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