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Letsiou S, Damigou E, Nomikos T, Pergantis SA, Pitsavos C, Panagiotakos D, Antonopoulou S. Deciphering the associations of selenium distribution in serum GPx-3 and selenoprotein P with cardiovascular risk factors in a healthy population with moderate levels of selenium: The ATTICA study. J Trace Elem Med Biol 2024; 86:127509. [PMID: 39190954 DOI: 10.1016/j.jtemb.2024.127509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2024] [Revised: 08/14/2024] [Accepted: 08/14/2024] [Indexed: 08/29/2024]
Abstract
BACKGROUND Selenium (Se) is an essential micronutrient, important for human health. The relationship of Se with cardiovascular risk factors is still inconclusive, especially regarding the role of different selenoproteins. The present study evaluated the relation of total serum Se as well as its distribution in plasma selenoproteins, namely glutathione peroxidase 3 (GPx3) and selenoprotein P (SelP) with cardiovascular risk factors in a sex-specific manner, in a healthy population with moderate levels of Se. METHODS A sub-sample from the ATTICA Study's database, consisting of 398 participants (160 females and 238 males) with data on Se and selenoproteins levels, was considered. GPx3, SelP and the main non-specific serum selenium containing protein, selenoalbumin (SeAlb) were simultaneously determined in human plasma by high-performance liquid chromatography (HPLC) coupled with inductively coupled plasma mass spectrometry (ICP-MS) at baseline. RESULTS Participants that belong to the highest tertiles of GPx3 and SelP presented the lowest blood pressure. Homocysteine was inversely associated with SelP and its ratio SelP/TSe in both sexes. In males, the lowest tertile of GPx3 showed lower adiponectin levels (0.66 ± 0.21 μg/mL) in comparison to the 2nd tertile of GPx3 (p=0.002), SelP was inversely associated with visceral adipose index (VAI) (-2.29 ± 0.81, p=0.005). Particularly, in males, the middle tertile of SelP had the lowest VAI values. Regarding females, lower Lp(a) concentration by 11.96 ± 5.84 mg/dL was observed in low SelP levels while higher leptin concentration by 2.30 ± 0.73 μg/L and lower fibrinogen concentration by 27.32 ± 13.30 mg/dL was detected in low GPx3 levels. CONCLUSION Circulating selenoproteins exert differentiated effects on cardiovascular risk factors, some of them in a sex-specific manner.
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Affiliation(s)
- Sophia Letsiou
- Department of Nutrition and Dietetics, School of Health Sciences and Education, Harokopio University, Athens, Greece
| | - Evangelia Damigou
- Department of Nutrition and Dietetics, School of Health Sciences and Education, Harokopio University, Athens, Greece
| | - Tzortzis Nomikos
- Department of Nutrition and Dietetics, School of Health Sciences and Education, Harokopio University, Athens, Greece
| | | | - Christos Pitsavos
- First Cardiology Clinic, Medical School, National and Kapodistrian University of Athens, Hippokration Hospital, Athens, Greece
| | - Demosthenes Panagiotakos
- Department of Nutrition and Dietetics, School of Health Sciences and Education, Harokopio University, Athens, Greece
| | - Smaragdi Antonopoulou
- Department of Nutrition and Dietetics, School of Health Sciences and Education, Harokopio University, Athens, Greece.
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Morán-Serradilla C, Plano D, Sanmartín C, Sharma AK. Selenization of Small Molecule Drugs: A New Player on the Board. J Med Chem 2024; 67:7759-7787. [PMID: 38716896 DOI: 10.1021/acs.jmedchem.3c02426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/24/2024]
Abstract
There is an urgent need to develop safer and more effective modalities for the treatment of a wide range of pathologies due to the increasing rates of drug resistance, undesired side effects, poor clinical outcomes, etc. Throughout the years, selenium (Se) has attracted a great deal of attention due to its important role in human health. Besides, a growing body of work has unveiled that the inclusion of Se motifs into a great number of molecules is a promising strategy for obtaining novel therapeutic agents. In the current Perspective, we have gathered the most recent literature related to the incorporation of different Se moieties into the scaffolds of a wide range of known drugs and their feasible pharmaceutical applications. In addition, we highlight different representative examples as well as provide our perspective on Se drugs and the possible future directions, promises, opportunities, and challenges of this ground-breaking area of research.
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Affiliation(s)
| | - Daniel Plano
- Department of Pharmaceutical Sciences, University of Navarra, Irunlarrea 1, Pamplona E-31008, Spain
| | - Carmen Sanmartín
- Department of Pharmaceutical Sciences, University of Navarra, Irunlarrea 1, Pamplona E-31008, Spain
| | - Arun K Sharma
- Department of Pharmacology, Penn State College of Medicine, 500 University Drive, Hershey, Pennsylvania 17033, United States
- Penn State Cancer Institute, 400 University Drive,Hershey, Pennsylvania 17033, United States
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Pavlidou E, Poulios E, Papadopoulou SK, Fasoulas A, Dakanalis A, Giaginis C. Clinical Evidence on the Potential Beneficial Effects of Diet and Dietary Supplements against COVID-19 Infection Risk and Symptoms' Severity. Med Sci (Basel) 2024; 12:11. [PMID: 38390861 PMCID: PMC10885051 DOI: 10.3390/medsci12010011] [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: 01/14/2024] [Revised: 02/06/2024] [Accepted: 02/08/2024] [Indexed: 02/24/2024] Open
Abstract
BACKGROUND Diet and dietary supplements aim to add trace elements, vitamins, and minerals to the body to improve human health and boost the immune system. In the previous few years, the new SARS-CoV-2 coronavirus strain has been threatening the health of individuals and public health more broadly, with rates of intensive care unit cases on the rise, while long-term COVID-19 complications are persisting until today. In the peculiar circumstances of the COVID-19 pandemic, in combination with disease prevention techniques, the strengthening of the immune system is considered particularly important to enable it to effectively respond to and eliminate the SARS-CoV-2 viral pathogen in the event of infection. The purpose of the current literature review is to thoroughly summarize and critically analyze the current clinical data concerning the potential beneficial effects of diet and dietary supplements against COVID-19 infection risk and symptoms' severity. The micronutrients/supplements examined in this study in relation to COVID-19 infection are vitamins A, B, C, and D, zinc, selenium, magnesium, iron, omega-3 fatty acids, glutamine, resveratrol, beta-glucans, and probiotics. The potential effects of dietary patterns such as the Mediterranean diet against SARS-CoV-2 infection risk and symptoms' severity were also analyzed. Our literature review suggests that micro- and macronutrient supplementation and a healthy diet and lifestyle may provide support to immune system function, with beneficial effects both before and during SARS-CoV-2 infection. However, additional studies are recommended to draw safe conclusions and formulate dietary recommendations concerning dietary supplements and their possible effects on preventing and co-treating COVID-19 disease.
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Affiliation(s)
- Eleni Pavlidou
- Department of Food Science and Nutrition, School of Environment, University of the Aegean, 81400 Lemnos, Greece; (E.P.); (E.P.); (A.F.)
| | - Efthymios Poulios
- Department of Food Science and Nutrition, School of Environment, University of the Aegean, 81400 Lemnos, Greece; (E.P.); (E.P.); (A.F.)
| | - Sousana K. Papadopoulou
- Department of Nutritional Sciences and Dietetics, School of Health Sciences, International Hellenic University, 57400 Thessaloniki, Greece
| | - Aristeidis Fasoulas
- Department of Food Science and Nutrition, School of Environment, University of the Aegean, 81400 Lemnos, Greece; (E.P.); (E.P.); (A.F.)
| | - Antonios Dakanalis
- Department of Mental Health, Fondazione IRCCS San Gerardo dei Tintori, Via G.B. Pergolesi 33, 20900 Monza, MB, Italy;
- Department of Medicine and Surgery, University of Milan Bicocca, Via Cadore 38, 20900 Monza, MB, Italy
| | - Constantinos Giaginis
- Department of Food Science and Nutrition, School of Environment, University of the Aegean, 81400 Lemnos, Greece; (E.P.); (E.P.); (A.F.)
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Rodrigues CM, Parmeggiani EB, Leal KW, Schneider M, Collet SG, Cibin FWS, Gomes V, Blagitz MG, da Rocha JBT, Leal MLDR. Effect of Prepartum Maternal Supplementation with Diphenyl Diselenide on Biochemical, Immunological, and Oxidative Parameters of the Offspring. Animals (Basel) 2023; 14:10. [PMID: 38200741 PMCID: PMC10778336 DOI: 10.3390/ani14010010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 12/06/2023] [Accepted: 12/15/2023] [Indexed: 01/12/2024] Open
Abstract
This study aimed to assess the impact of prepartum maternal diphenyl diselenide (PhSe)2 supplementation on the development, biochemical, immune, and antioxidant parameters of calves. Eighteen Holstein breed calves were used, born to females who were or were not subjected to supplementation, at 42, 28, and 14 days prior to calving. The (PhSe)2 group (DDG) was administered 3 μmol/kg of (PhSe)2 in 4 mL of dimethyl sulfoxide (DMSO), while the DMSO and NaCl groups were administered 4 mL of DMSO and 0.9% NaCl, subcutaneously. The calves were evaluated based on their weight, withers height, body condition score 24 h post-birth (0), as well on days 14, 28, 42, 56, 70. Blood samples were also taken to determine serum variables. Calves on the DDG showed higher average levels of total protein, albumin, and globulins on day 0, and the immunoglobulin G level was significantly higher than the other groups on days 0, 14, 56, 70. Maternal supplementation showed immunomodulatory effect on calves, evidenced by the exceptional rates of passive immunity transfer, as well as the enhancement of humoral immunity. Our research offers fresh insights into the immunomodulatory potential of (PhSe)2, making it a viable alternative in facing this challenging phase, rearing dairy calves.
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Affiliation(s)
- Cláudia Medeiros Rodrigues
- Department of Large Animal Clinic, Federal University of Santa Maria, Santa Maria 97105-900, RS, Brazil; (E.B.P.); (K.W.L.)
| | - Eliana Burtet Parmeggiani
- Department of Large Animal Clinic, Federal University of Santa Maria, Santa Maria 97105-900, RS, Brazil; (E.B.P.); (K.W.L.)
| | - Karoline Wagner Leal
- Department of Large Animal Clinic, Federal University of Santa Maria, Santa Maria 97105-900, RS, Brazil; (E.B.P.); (K.W.L.)
| | - Marla Schneider
- Veterinary Medicine Course, Central Education Unit Faem Faculty, Chapecó 89812-214, SC, Brazil;
| | | | | | - Viviani Gomes
- Department of Clinical Medicine, Faculty of Veterinary Medicine and Zootechnics, University of São Paulo, São Paulo 05508-270, SP, Brazil;
| | - Maiara Garcia Blagitz
- Veterinary Medicine Course, Federal University of the Southern Border, Realeza 85770-000, PR, Brazil;
| | | | - Marta Lizandra do Rêgo Leal
- Department of Large Animal Clinic, Federal University of Santa Maria, Santa Maria 97105-900, RS, Brazil; (E.B.P.); (K.W.L.)
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Rusetskaya NY, Loginova NY, Pokrovskaya EP, Chesovskikh YS, Titova LE. Redox regulation of the NLRP3-mediated inflammation and pyroptosis. BIOMEDITSINSKAIA KHIMIIA 2023; 69:333-352. [PMID: 38153050 DOI: 10.18097/pbmc20236906333] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2023]
Abstract
The review considers modern data on the mechanisms of activation and redox regulation of the NLRP3 inflammasome and gasdermins, as well as the role of selenium in these processes. Activation of the inflammasome and pyroptosis represent an evolutionarily conserved mechanism of the defense against pathogens, described for various types of cells and tissues (macrophages and monocytes, microglial cells and astrocytes, podocytes and parenchymal cells of the kidneys, periodontal tissues, osteoclasts and osteoblasts, as well as cells of the digestive and urogenital systems, etc.). Depending on the characteristics of redox regulation, the participants of NLRP3 inflammation and pyroptosis can be subdivided into 2 groups. Members of the first group block the mitochondrial electron transport chain, promote the formation of reactive oxygen species and the development of oxidative stress. This group includes granzymes, the mitochondrial antiviral signaling protein MAVS, and others. The second group includes thioredoxin interacting protein (TXNIP), erythroid-derived nuclear factor-2 (NRF2), Kelch-like ECH-associated protein 1 (Keap1), ninjurin (Ninj1), scramblase (TMEM16), inflammasome regulatory protein kinase NLRP3 (NEK7), caspase-1, gasdermins GSDM B, D and others. They have redox-sensitive domains and/or cysteine residues subjected to redox regulation, glutathionylation/deglutathionylation or other types of regulation. Suppression of oxidative stress and redox regulation of participants in NLRP3 inflammation and pyroptosis depends on the activity of the antioxidant enzymes glutathione peroxidase (GPX) and thioredoxin reductase (TRXR), containing a selenocysteine residue Sec in the active site. The expression of GPX and TRXR is regulated by NRF2 and depends on the concentration of selenium in the blood. Selenium deficiency causes ineffective translation of the Sec UGA codon, translation termination, and, consequently, synthesis of inactive selenoproteins, which can cause various types of programmed cell death: apoptosis of nerve cells and sperm, necroptosis of erythrocyte precursors, pyroptosis of infected myeloid cells, ferroptosis of T- and B-lymphocytes, kidney and pancreatic cells. In addition, suboptimal selenium concentrations in the blood (0.86 μM or 68 μg/l or less) have a significant impact on expression of more than two hundred and fifty genes as compared to the optimal selenium concentration (1.43 μM or 113 μg/l). Based on the above, we propose to consider blood selenium concentrations as an important parameter of redox homeostasis in the cell. Suboptimal blood selenium concentrations (or selenium deficiency states) should be used for assessment of the risk of developing inflammatory processes.
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Affiliation(s)
- N Yu Rusetskaya
- V.I. Razumovsky Saratov State Medical University, Saratov, Russia
| | - N Yu Loginova
- V.I. Razumovsky Saratov State Medical University, Saratov, Russia
| | - E P Pokrovskaya
- V.I. Razumovsky Saratov State Medical University, Saratov, Russia
| | - Yu S Chesovskikh
- V.I. Razumovsky Saratov State Medical University, Saratov, Russia
| | - L E Titova
- V.I. Razumovsky Saratov State Medical University, Saratov, Russia
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Pacuła-Miszewska AJ, Obieziurska-Fabisiak M, Jastrzębska A, Długosz-Pokorska A, Gach-Janczak K, Ścianowski J. The Influence of Long Carbon Chains on the Antioxidant and Anticancer Properties of N-Substituted Benzisoselenazolones and Corresponding Diselenides. Pharmaceuticals (Basel) 2023; 16:1560. [PMID: 38004426 PMCID: PMC10675721 DOI: 10.3390/ph16111560] [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: 10/05/2023] [Revised: 10/19/2023] [Accepted: 11/02/2023] [Indexed: 11/26/2023] Open
Abstract
Organoselenium compounds are well-known for their numerous biocapacities, which result from the uniqueness of the selenium atom and the possibility of constructing heterorganic molecules that can mimic the activity of selenoenzymes, crucial for a multitude of important physiological processes. In this paper, we have synthesized a series of N-substituted benzisoselenazolones and corresponding diphenyl diselenides possessing lipophilic long carbon chains, solely or with additional polar insets: phenyl linkers and ester groups. Evaluation of their antioxidant and cytotoxic activity revealed an increased H2O2-reduction potential of diphenyl diselenides bearing N-octyl, ethyl N-(12-dodecanoate)- and N-(8-octanoate) groups, elevated radical scavenging activity of 2,2'-diselenobis(N-dodecylbenzamide) and a promising cytotoxic potential of N-(4-dodecyl)phenylbenzisoselenazol-3(2H)-one.
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Affiliation(s)
- Agata J. Pacuła-Miszewska
- Department of Organic Chemistry, Faculty of Chemistry, Nicolaus Copernicus University, 7 Gagarin Street, 87-100 Torun, Poland; (M.O.-F.); (J.Ś.)
| | - Magdalena Obieziurska-Fabisiak
- Department of Organic Chemistry, Faculty of Chemistry, Nicolaus Copernicus University, 7 Gagarin Street, 87-100 Torun, Poland; (M.O.-F.); (J.Ś.)
| | - Aneta Jastrzębska
- Department of Analytical Chemistry and Applied Spectroscopy, Faculty of Chemistry, Nicolaus Copernicus University in Torun, 7 Gagarin Street, 87-100 Torun, Poland;
| | - Angelika Długosz-Pokorska
- Department of Biomolecular Chemistry, Faculty of Medicine, Medical University of Lodz, Mazowiecka 6/8, 92-215 Lodz, Poland; (A.D.-P.); (K.G.-J.)
| | - Katarzyna Gach-Janczak
- Department of Biomolecular Chemistry, Faculty of Medicine, Medical University of Lodz, Mazowiecka 6/8, 92-215 Lodz, Poland; (A.D.-P.); (K.G.-J.)
| | - Jacek Ścianowski
- Department of Organic Chemistry, Faculty of Chemistry, Nicolaus Copernicus University, 7 Gagarin Street, 87-100 Torun, Poland; (M.O.-F.); (J.Ś.)
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Chillon TS, Demircan K, Hackler J, Heller RA, Kaghazian P, Moghaddam A, Schomburg L. Combined copper and zinc deficiency is associated with reduced SARS-CoV-2 immunization response to BNT162b2 vaccination. Heliyon 2023; 9:e20919. [PMID: 37886755 PMCID: PMC10597833 DOI: 10.1016/j.heliyon.2023.e20919] [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: 04/09/2023] [Revised: 10/06/2023] [Accepted: 10/11/2023] [Indexed: 10/28/2023] Open
Abstract
The essential trace elements copper, selenium and zinc are of relevance for immunity and immune response to vaccination. In this longitudinal study, adult healthcare workers (n = 126) received two doses of an mRNA vaccine (BNT162b2), and longitudinal serum samples were prepared. Vaccine-induced antibodies and their neutralizing activity were analyzed, and the trace elements copper, zinc, and selenium along with the copper transporter ceruloplasmin were measured. Subjects with combined deficiency of copper and zinc, i.e. both in the lowest tertiles at baseline, displayed particularly low antibody titers at three (Double Q1: 13 AU/mL vs. not double Q1: 29 AU/mL) and six (Double Q1: 200 AU/mL vs. not double Q1: 425 AU/mL) weeks after vaccination (p < 0.05). The results indicate the potential importance of an adequate trace element status of copper and zinc for raising a strong vaccine-induced SARS-CoV-2 antibody response, and highlights the importance of considering combined micronutrient insufficiencies, as single deficiencies may synergize.
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Affiliation(s)
- Thilo Samson Chillon
- Max Rubner Center for Cardiovascular Metabolic Renal Research (CMR), Institute for Experimental Endocrinology, Charité-Universitätsmedizin Berlin, Hessische Straße 3-4, D-10115 Berlin, Germany
| | - Kamil Demircan
- Max Rubner Center for Cardiovascular Metabolic Renal Research (CMR), Institute for Experimental Endocrinology, Charité-Universitätsmedizin Berlin, Hessische Straße 3-4, D-10115 Berlin, Germany
| | - Julian Hackler
- Max Rubner Center for Cardiovascular Metabolic Renal Research (CMR), Institute for Experimental Endocrinology, Charité-Universitätsmedizin Berlin, Hessische Straße 3-4, D-10115 Berlin, Germany
| | - Raban A. Heller
- Max Rubner Center for Cardiovascular Metabolic Renal Research (CMR), Institute for Experimental Endocrinology, Charité-Universitätsmedizin Berlin, Hessische Straße 3-4, D-10115 Berlin, Germany
- Bundeswehr Hospital Berlin, Clinic of Traumatology and Orthopaedics, D-10115 Berlin, Germany
| | - Peyman Kaghazian
- Orthopedic and Trauma Surgery, Frohsinnstraße 12, D-63739 Aschaffenburg, Germany
| | - Arash Moghaddam
- Orthopedic and Trauma Surgery, Frohsinnstraße 12, D-63739 Aschaffenburg, Germany
| | - Lutz Schomburg
- Max Rubner Center for Cardiovascular Metabolic Renal Research (CMR), Institute for Experimental Endocrinology, Charité-Universitätsmedizin Berlin, Hessische Straße 3-4, D-10115 Berlin, Germany
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Xie B, Zeng D, Yang M, Tang Z, He L, Chen T. Translational Selenium Nanoparticles to Attenuate Allergic Dermatitis through Nrf2-Keap1-Driven Activation of Selenoproteins. ACS NANO 2023. [PMID: 37428976 DOI: 10.1021/acsnano.3c04344] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/12/2023]
Abstract
Easy recurrence and strong treatment side effects significantly limit the clinical treatment of allergic dermatitis. The human trace element selenium (Se) plays essential roles in redox regulation through incorporation into selenoproteins in the form of 21st necessary amino acid selenocysteine, to participates in the pathogenesis and intervention of chronic inflammatory diseases. Therefore, based on the safe and elemental properties of Se, we construct a facile-synthesis strategy for antiallergic selenium nanoparticles (LET-SeNPs), and scale up the production by employing a spray drying method with lactose (Lac-LET-SeNPs) or maltodextrin (Mal-LET-SeNPs) as encapsulation agents realizing larger scale production and a longer storage time. As expected, these as-prepared LET-SeNPs could effectively activate the Nrf2-Keap1 signaling pathway to enhance the expression of antioxidative selenoprotein at mRNA and protein levels, then inhibit mast cell activation to achieve efficient antiallergic activity. Interestingly, LET-SeNPs undergo metabolism to seleno-amino acids to promote biosynthesis of selenoproteins, which could suppress ROS-induced cyclooxygenase-2 (COX-2) and MAPKs activation to suppress the release of histamine and inflammatory cytokines. Allergic mouse and Macaca fascicularis models further confirm that LET-SeNPs could increase the Se content and selenoprotein expression in the skin, decrease mast cells activation and inflammatory cells infiltration, and finally exhibit the high therapeutic effects on allergic dermatitis. Taken together, this study not only constructs facile large-scale synthesis of translational Se nanomedicine to break through the bottleneck problem of nanomaterials but also sheds light on its application in the intervention and treatment of allergies.
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Affiliation(s)
- Bin Xie
- Department of Oncology, The First Affiliated Hospital, Department of Chemistry, Jinan University, Guangzhou 510632, China
| | - Delong Zeng
- Department of Oncology, The First Affiliated Hospital, Department of Chemistry, Jinan University, Guangzhou 510632, China
| | - Meijin Yang
- Department of Oncology, The First Affiliated Hospital, Department of Chemistry, Jinan University, Guangzhou 510632, China
| | - Zhiying Tang
- Department of Oncology, The First Affiliated Hospital, Department of Chemistry, Jinan University, Guangzhou 510632, China
| | - Lizhen He
- Department of Oncology, The First Affiliated Hospital, Department of Chemistry, Jinan University, Guangzhou 510632, China
| | - Tianfeng Chen
- Department of Oncology, The First Affiliated Hospital, Department of Chemistry, Jinan University, Guangzhou 510632, China
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Rodelgo Jiménez L, Anchuelo AC, Soler PM, Muñoz RP, Ferrer MF, Fornie IS, Mosquera MG, González MMN. Zinc levels of patients with a moderate to severe COVID-19 infection at hospital admission and after 4th days of ward hospitalization and their clinical outcome. J Trace Elem Med Biol 2023; 79:127200. [PMID: 37229980 PMCID: PMC10181947 DOI: 10.1016/j.jtemb.2023.127200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 04/08/2023] [Accepted: 05/12/2023] [Indexed: 05/27/2023]
Abstract
BACKGROUND Previous studies associate the disturbance of the Zinc (Zn) status with the severity of the disease and the inflammatory process in the critically ill patient. This decrease in Zn concentrations is an indicator of poor prognosis. Our aim was to evaluate Zn levels at admission and after four days, and to study if lower Zn levels at those days were related to a worse clinical outcome. MATERIAL AND METHODS Observational cohort study at a tertiary Hospital. Recruitment period: 09/04/2020-04/24/2021. Clinical information on hypertension, diabetes mellitus (DM), chronic obstructive pulmonary disease (COPD), or bronchial asthma was collected. Obesity was defined as BMI ≥ 30 Kg/m2. Blood extraction was performed at admission and after 4 days. Zn was measured by atomic absorption using a flame method. Worse clinical outcome was defined as death during admission, intensive critical care unit admission or receiving supplemental oxygen through noninvasive or invasive ventilator care. RESULTS 129 subjects were invited to participate but only 100 subjects completed the survey. According to ROC curve [AUC= 0.63 (95% CI 0.60-0.66)], Zn < 79 μg/dL showed the best performance to detect a worse outcome (Sn=0.85; Sp=0.36). Patients with Zn < 79 μg/dL were older (70 vs 61 y; p = 0.002) with no differences by sex. Most patients presented with fever, dysthermic symptoms and cough, without differences between groups. Pre-existing comorbid conditions did not differ significantly between groups. Less obese subjects were found in the Zn < 79 μg/dL group (21.4 vs 43.3%, p = 0.025). In the univariate analysis, Zn < 79 μg/dL at hospital admission was related to a worse outcome (p = 0.044), but after adjusting for age, C-reactive protein, and obesity there was no difference, but a tendency towards a worse prognosis [OR 2.20 (0.63-7.70), p = 0.215]. Zn levels increased in both groups after 4 days (66.6 vs 73.1 μg/dL at admission, and 72.2 vs 80.5 μg/dL at 4th day), with ns. difference (p = 0.214). CONCLUSION Zn < 79 μg/dL at admission for a moderate to severe COVID-19 infection could be related to a worse outcome, although after adjustment for age, C-reactive protein levels and obesity, this Zn level threshold did not show statistically significant difference in the composite end point, but a tendency towards a worse prognosis. In addition, patients with the best clinical evolution showed higher serum Zn levels at 4th day after hospital admission than the patients with a worse prognosis.
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Affiliation(s)
- Laura Rodelgo Jiménez
- Instituto de Medicina de Laboratorio (IML), Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain
| | - Arturo Corbatón Anchuelo
- Grupo de Riesgo Vascular, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain; Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), Madrid, Spain.
| | - Pablo Matías Soler
- Grupo de Patología de Urgencias y Emergencias, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain
| | - Raúl Perales Muñoz
- Grupo de Patología de Urgencias y Emergencias, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain
| | - Manuel Fuentes Ferrer
- Unidad de Investigación (UI) del Hospital Universitario Nuestra Señora de Candelaria (HUNSC-GAP), Santa Cruz de Tenerife, Spain
| | - Iñigo Sagastagoitia Fornie
- Grupo de Infecciosas/VIH, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain
| | - Marina Gil Mosquera
- Grupo de Patología de Urgencias y Emergencias, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain
| | - Mercedes Martínez-Novillo González
- Instituto de Medicina de Laboratorio (IML), Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain
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Ghelichkhani F, Gonzalez FA, Kapitonova MA, Rozovsky S. Selenoprotein S Interacts with the Replication and Transcription Complex of SARS-CoV-2 by Binding nsp7. J Mol Biol 2023; 435:168008. [PMID: 36773692 PMCID: PMC9911985 DOI: 10.1016/j.jmb.2023.168008] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 12/05/2022] [Accepted: 02/03/2023] [Indexed: 02/12/2023]
Abstract
The severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) replicates and evades detection using ER membranes and their associated protein machinery. Among these hijacked human proteins is selenoprotein S (selenos). This selenoprotein takes part in the protein quality control, signaling, and the regulation of cytokine secretion. While the role of selenos in the viral life cycle is not yet known, it has been reported to interact with SARS-CoV-2 nonstructural protein 7 (nsp7), a viral protein essential for the replication of the virus. We set to study whether selenos and nsp7 interact directly and if they can still bind when nsp7 is bound to the replication and transcription complex of the virus. Using biochemical assays, we show that selenos binds directly to nsp7. In addition, we found that selenos can bind to nsp7 when it is in a complex with the coronavirus's minimal replication and transcription complex, comprised of nsp7, nsp8, and the RNA-dependent RNA polymerase nsp12. In addition, through crosslinking experiments, we mapped the interaction sites of selenos and nsp7 in the replication complex and showed that the hydrophobic segment of selenos is essential for binding to nsp7. This arrangement leaves an extended helix and the intrinsically disordered segment of selenos-including the reactive selenocysteine-exposed and free to potentially recruit additional proteins to the replication and transcription complex.
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Affiliation(s)
- Farid Ghelichkhani
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE 19716, USA
| | - Fabio A Gonzalez
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE 19716, USA
| | - Mariia A Kapitonova
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE 19716, USA
| | - Sharon Rozovsky
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE 19716, USA.
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Rust P, Ekmekcioglu C. The Role of Diet and Specific Nutrients during the COVID-19 Pandemic: What Have We Learned over the Last Three Years? INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:5400. [PMID: 37048015 PMCID: PMC10093865 DOI: 10.3390/ijerph20075400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 03/30/2023] [Accepted: 04/01/2023] [Indexed: 06/19/2023]
Abstract
Nutrients and diets have an important impact on our immune system and infection risk and a huge number of papers have been published dealing with various aspects of nutrition in relation to SARS-CoV-2 infection risk or COVID-19 severity. This narrative review aims to give an update on this association and tries to summarize some of the most important findings after three years of pandemic. The analysis of major studies and systematic reviews leads to the conclusion that a healthy plant-based diet reduces the risks for SARS-CoV-2 infection and especially COVID-19 severity. Regarding micronutrients, vitamin D is to the fore, but also zinc, vitamin C and, to some extent, selenium may play a role in COVID-19. Furthermore, omega-3-fatty acids with their anti-inflammatory effects also deserve attention. Therefore, a major aim of societal nutritional efforts in future should be to foster a high quality plant-based diet, which not only exerts beneficial effects on the immune system but also reduces the risk for non-communicable diseases such as type 2 diabetes or obesity which are also primary risk factors for worse COVID-19 outcomes. Another aim should be to focus on a good supply of critical immune-effective nutrients, such as vitamin D and zinc.
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Affiliation(s)
- Petra Rust
- Department of Nutritional Sciences, University of Vienna, Josef-Holaubek-Platz 2, 1090 Vienna, Austria
| | - Cem Ekmekcioglu
- Department of Environmental Health, Center for Public Health, Medical University of Vienna, 1090 Vienna, Austria
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