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Narukawa T, Wada A, Cheong C, Chiba K. Separation and determination of tellurium(IV) and tellurium(VI) using reversed-phase high-performance liquid chromatography-inductively coupled plasma mass spectrometry. ANAL SCI 2024:10.1007/s44211-024-00663-y. [PMID: 39235676 DOI: 10.1007/s44211-024-00663-y] [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: 07/25/2024] [Accepted: 08/27/2024] [Indexed: 09/06/2024]
Abstract
A new method for speciation analysis of tellurium(IV) and Te(VI) using high-performance liquid chromatography-inductively coupled plasma mass spectrometry (HPLC-ICP-MS) has been developed. Tellurium(IV) and Te(VI) were completely separated using a reversed-phase column with an L-cysteine eluent under an isocratic elution condition. The detection limits (3σ) of Te(IV) and Te(VI) monitored by HPLC-ICP-MS at m/z 125 were 1.4 and 0.5 ng g-1, respectively. The proposed determination method was precisely applied to assessing total concentrations and chemical species of Te in several standard solutions. The recovery rates of Te(IV) and Te(VI) were almost 100% from the results of the addition-recovery examinations, even when a high matrix sample such as seawater was measured. The method was applied to seawater samples and electronic products, and was proved quite effective for environmental risk assessment.
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Affiliation(s)
- Tomohiro Narukawa
- National Metrology Institute of Japan (NMIJ), National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Tsukuba, Ibaraki, 305-8563, Japan.
| | - Ayaka Wada
- National Metrology Institute of Japan (NMIJ), National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Tsukuba, Ibaraki, 305-8563, Japan
| | - Chikako Cheong
- National Metrology Institute of Japan (NMIJ), National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Tsukuba, Ibaraki, 305-8563, Japan
| | - Koichi Chiba
- School of Biological and Environmental Science, Kwansei Gakuin University, 1 Gakuen-Uegahara, Sanda, Hyogo, 669-1337, Japan
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2
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Takada S, Yamagishi Y, Tanaka YK, Anan Y, Nagasawa S, Iwase H, Ogra Y. Identification of Tellurium Metabolite in Broccoli Using Complementary Analyses of Inorganic and Organic Mass Spectrometry. Chem Res Toxicol 2024; 37:1210-1217. [PMID: 38855932 DOI: 10.1021/acs.chemrestox.4c00148] [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: 06/11/2024]
Abstract
Tellurium (Te) is a chalcogen element like sulfur and selenium. Although it is unclear whether Te is an essential nutrient in organisms, unique Te metabolic pathways have been uncovered. We have previously reported that an unknown Te metabolite (UKTe) was observed in plants exposed to tellurate, a highly toxic Te oxyanion, by liquid chromatography-inductively coupled plasma mass spectrometer (LC-ICP-MS). In the present study, we detected UKTe in tellurate-exposed broccoli (Brassica oleracea var. italica) by LC-ICP-MS and identified it as gluconic acid-3-tellurate (GA-3Te) using electrospray ionization mass spectrometer with quadrupole-Orbitrap detector and tandem MS analysis, the high-sensitivity and high-resolution mass spectrometry for organic compounds. We also found that GA-3Te was produced from one gluconic acid and one tellurate molecule by direct complexation in an aqueous solution. GA-3Te was significantly less toxic than tellurate on plant growth. This study is the first to identify the Te metabolite GA-3Te in plants and will contribute to the investigation of tellurate detoxification pathways. Moreover, gluconic acid, a natural and biodegradable organic compound, is expected to be applicable to eco-friendly remediation strategies for tellurate contamination.
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Affiliation(s)
- Shohei Takada
- Graduate School of Medical and Pharmaceutical Science, Chiba University, 1-8-1 Inohana, Chuo, Chiba 260-8675, Japan
| | - Yoshikazu Yamagishi
- Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo, Chiba 260-8670, Japan
| | - Yu-Ki Tanaka
- Graduate School of Pharmaceutical Science, Chiba University, 1-8-1 Inohana, Chuo, Chiba 260-8675, Japan
| | - Yasumi Anan
- Faculty of Environmental & Symbiotic Sciences, Prefectural University of Kumamoto, 3-1-100 Tsukide, Higashi, Kumamoto 862-8502, Japan
| | - Sayaka Nagasawa
- Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo, Chiba 260-8670, Japan
- Graduate School of Pharmaceutical Science, Chiba University, 1-8-1 Inohana, Chuo, Chiba 260-8675, Japan
| | - Hirotaro Iwase
- Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo, Chiba 260-8670, Japan
| | - Yasumitsu Ogra
- Graduate School of Pharmaceutical Science, Chiba University, 1-8-1 Inohana, Chuo, Chiba 260-8675, Japan
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3
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Sári D, Ferroudj A, Semsey D, El-Ramady H, Brevik EC, Prokisch J. Tellurium and Nano-Tellurium: Medicine or Poison? NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:670. [PMID: 38668165 PMCID: PMC11053935 DOI: 10.3390/nano14080670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Revised: 04/07/2024] [Accepted: 04/10/2024] [Indexed: 04/29/2024]
Abstract
Tellurium (Te) is the heaviest stable chalcogen and is a rare element in Earth's crust (one to five ppb). It was discovered in gold ore from mines in Kleinschlatten near the present-day city of Zlatna, Romania. Industrial and other applications of Te focus on its inorganic forms. Tellurium can be toxic to animals and humans at low doses. Chronic tellurium poisoning endangers the kidney, liver, and nervous system. However, Te can be effective against bacteria and is able to destroy cancer cells. Tellurium can also be used to develop redox modulators and enzyme inhibitors. Soluble salts that contain Te had a role as therapeutic and antimicrobial agents before the advent of antibiotics. The pharmaceutical use of Te is not widespread due to the narrow margin between beneficial and toxic doses, but there are differences between the measure of toxicity based on the Te form. Nano-tellurium (Te-NPs) has several applications: it can act as an adsorptive agent to remove pollutants, and it can be used in antibacterial coating, photo-catalysis for the degradation of dyes, and conductive electronic materials. Nano-sized Te particles are the most promising and can be produced in both chemical and biological ways. Safety assessments are essential to determine the potential risks and benefits of using Te compounds in various applications. Future challenges and directions in developing nano-materials, nano-alloys, and nano-structures based on Te are still open to debate.
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Affiliation(s)
- Daniella Sári
- Nano-Food Laboratory, Department of Animal Husbandry, Institute of Animal Science, Biotechnology and Nature Conservation, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, 138 Böszörményi Street, 4032 Debrecen, Hungary; (A.F.); (D.S.); (J.P.)
| | - Aya Ferroudj
- Nano-Food Laboratory, Department of Animal Husbandry, Institute of Animal Science, Biotechnology and Nature Conservation, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, 138 Böszörményi Street, 4032 Debrecen, Hungary; (A.F.); (D.S.); (J.P.)
| | - Dávid Semsey
- Nano-Food Laboratory, Department of Animal Husbandry, Institute of Animal Science, Biotechnology and Nature Conservation, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, 138 Böszörményi Street, 4032 Debrecen, Hungary; (A.F.); (D.S.); (J.P.)
| | - Hassan El-Ramady
- Nano-Food Laboratory, Department of Animal Husbandry, Institute of Animal Science, Biotechnology and Nature Conservation, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, 138 Böszörményi Street, 4032 Debrecen, Hungary; (A.F.); (D.S.); (J.P.)
- Soil and Water Department, Faculty of Agriculture, Kafrelsheikh University, Kafr El-Sheikh 33516, Egypt
| | - Eric C. Brevik
- College of Agricultural, Life, and Physical Sciences, Southern Illinois University, Carbondale, IL 62901, USA;
| | - József Prokisch
- Nano-Food Laboratory, Department of Animal Husbandry, Institute of Animal Science, Biotechnology and Nature Conservation, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, 138 Böszörményi Street, 4032 Debrecen, Hungary; (A.F.); (D.S.); (J.P.)
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4
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Tripathi A, Khan A, Kiran P, Shetty H, Srivastava R. Screening of AS101 analog, organotellurolate (IV) compound 2 for its in vitro biocompatibility, anticancer, and antibacterial activities. Amino Acids 2023:10.1007/s00726-023-03280-7. [PMID: 37227510 DOI: 10.1007/s00726-023-03280-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 05/10/2023] [Indexed: 05/26/2023]
Abstract
Organotellurium compounds are being well researched as potential candidates for their functional roles in therapeutic and clinical biology. Here, we report the in vitro anticancer and antibacterial activities of an AS101 analog, cyclic zwitterionic organotellurolate (IV) compound 2 [Te-{CH2CH(NH3+)COO}(Cl)3]. Different concentrations of compound 2 were exposed to fibroblast L929 and breast cancer MCF-7 cell lines to study its effect on cell viability. The fibroblast cells with good viability confirmed the biocompatibility, and compound 2 also was less hemolytic on RBCs. A cytotoxic effect on MCF-7 breast cancer cell line investigated compound 2 to be anti-cancerous with IC50 value of 2.86 ± 0.02 µg/mL. The apoptosis was confirmed through the cell cycle phase arrest of the organotellurolate (IV) compound 2. Examination of the antibacterial potency compound 2 was done based on the agar disk diffusion, minimum inhibitory concentration, and time-dependent assay for the Gram-positive Bacillus subtilis and Gram-negative Pseudomonas putida. For both bacterial strains, tests were performed with the concentration range of 3.9-500 μg/mL, and the minimum inhibition concentration value was found to be 125 μg/mL. The time-dependent assay suggested the bactericidal activity of organotellurolate (IV) compound, 2 against the bacterial strains.
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Affiliation(s)
- Abhishek Tripathi
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, 400076, India
| | - Amreen Khan
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Mumbai, 400076, India
- Center for Research in Nanotechnology and Science, Indian Institute of Technology Bombay, Mumbai, 400076, India
| | - Pallavi Kiran
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Mumbai, 400076, India
| | - Harsha Shetty
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Mumbai, 400076, India
| | - Rohit Srivastava
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Mumbai, 400076, India.
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5
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Henriquez-Figuereo A, Morán-Serradilla C, Angulo-Elizari E, Sanmartín C, Plano D. Small molecules containing chalcogen elements (S, Se, Te) as new warhead to fight neglected tropical diseases. Eur J Med Chem 2023; 246:115002. [PMID: 36493616 DOI: 10.1016/j.ejmech.2022.115002] [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: 10/28/2022] [Revised: 11/21/2022] [Accepted: 12/01/2022] [Indexed: 12/13/2022]
Abstract
Neglected tropical diseases (NTDs) encompass a group of infectious diseases with a protozoan etiology, high incidence, and prevalence in developing countries. As a result, economic factors constitute one of the main obstacles to their management. Endemic countries have high levels of poverty, deprivation and marginalization which affect patients and limit their access to proper medical care. As a matter of fact, statistics remain uncollected in some affected areas due to non-reporting cases. World Health Organization and other organizations proposed a plan for the eradication and control of the vector, although many of these plans were halted by the COVID-19 pandemic. Despite of the available drugs to treat these pathologies, it exists a lack of effectiveness against several parasite strains. Treatment protocols for diseases such as American trypanosomiasis (Chagas disease), leishmaniasis, and human African trypanosomiasis (HAT) have not achieved the desired results. Unfortunately, these drugs present limitations such as side effects, toxicity, teratogenicity, renal, and hepatic impairment, as well as high costs that have hindered the control and eradication of these diseases. This review focuses on the analysis of a collection of scientific shreds of evidence with the aim of identifying novel chalcogen-derived molecules with biological activity against Chagas disease, leishmaniasis and HAT. Compounds illustrated in each figure share the distinction of containing at least one chalcogen element. Sulfur (S), selenium (Se), and tellurium (Te) have been grouped and analyzed in accordance with their design strategy, chemical synthesis process and biological activity. After an exhaustive revision of the related literature on S, Se, and Te compounds, 183 compounds presenting excellent biological performance were gathered against the different causative agents of CD, leishmaniasis and HAT.
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Affiliation(s)
- Andreina Henriquez-Figuereo
- University of Navarra, School of Pharmacy and Nutrition, Department of Pharmaceutical Technology and Chemistry, Irunlarrea 1, 31008, Pamplona, Spain; Institute of Tropical Health, University of Navarra, Irunlarrea 1, 31008, Pamplona, Spain.
| | - Cristina Morán-Serradilla
- University of Navarra, School of Pharmacy and Nutrition, Department of Pharmaceutical Technology and Chemistry, Irunlarrea 1, 31008, Pamplona, Spain
| | - Eduardo Angulo-Elizari
- University of Navarra, School of Pharmacy and Nutrition, Department of Pharmaceutical Technology and Chemistry, Irunlarrea 1, 31008, Pamplona, Spain
| | - Carmen Sanmartín
- University of Navarra, School of Pharmacy and Nutrition, Department of Pharmaceutical Technology and Chemistry, Irunlarrea 1, 31008, Pamplona, Spain; Institute of Tropical Health, University of Navarra, Irunlarrea 1, 31008, Pamplona, Spain.
| | - Daniel Plano
- University of Navarra, School of Pharmacy and Nutrition, Department of Pharmaceutical Technology and Chemistry, Irunlarrea 1, 31008, Pamplona, Spain; Institute of Tropical Health, University of Navarra, Irunlarrea 1, 31008, Pamplona, Spain.
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6
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Alonso‐Fernandes E, Fernández‐Llamosas H, Cano I, Serrano‐Pelejero C, Castro L, Díaz E, Carmona M. Enhancing tellurite and selenite bioconversions by overexpressing a methyltransferase from
Aromatoleum
sp. CIB. Microb Biotechnol 2022; 16:915-930. [PMID: 36366868 PMCID: PMC10128142 DOI: 10.1111/1751-7915.14162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 09/21/2022] [Accepted: 10/09/2022] [Indexed: 11/13/2022] Open
Abstract
Pollution by metalloids, e.g., tellurite and selenite, is of serious environmental concern and, therefore, there is an increasing interest in searching for ecologically friendly solutions for their elimination. Some microorganisms are able to reduce toxic tellurite/selenite into less toxic elemental tellurium (Te) and selenium (Se). Here, we describe the use of the environmentally relevant β-proteobacterium Aromatoleum sp. CIB as a platform for tellurite elimination. Aromatoleum sp. CIB was shown to tolerate 0.2 and 0.5 mM tellurite at aerobic and anaerobic conditions, respectively. Furthermore, the CIB strain was able to reduce tellurite into elemental Te producing rod-shaped Te nanoparticles (TeNPs) of around 200 nm length. A search in the genome of Aromatoleum sp. CIB revealed the presence of a gene, AzCIB_0135, which encodes a new methyltransferase that methylates tellurite and also selenite. AzCIB_0135 orthologs are widely distributed in bacterial genomes. The overexpression of the AzCIB_0135 gene both in Escherichia coli and Aromatoleum sp. CIB speeds up tellurite and selenite removal, and it enhances the production of rod-shaped TeNPs and spherical Se nanoparticles (SeNPs), respectively. Thus, the overexpression of a methylase becomes a new genetic strategy to optimize bacterial catalysts for tellurite/selenite bioremediation and for the programmed biosynthesis of metallic nanoparticles of biotechnological interest.
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Affiliation(s)
- Elena Alonso‐Fernandes
- Microbial and Plant Biotechnology Department Centro de Investigaciones Biológicas Margarita Salas‐CSIC Madrid Spain
| | - Helga Fernández‐Llamosas
- Microbial and Plant Biotechnology Department Centro de Investigaciones Biológicas Margarita Salas‐CSIC Madrid Spain
| | - Irene Cano
- Microbial and Plant Biotechnology Department Centro de Investigaciones Biológicas Margarita Salas‐CSIC Madrid Spain
| | - Cristina Serrano‐Pelejero
- Microbial and Plant Biotechnology Department Centro de Investigaciones Biológicas Margarita Salas‐CSIC Madrid Spain
| | - Laura Castro
- Department of Material Science and Metallurgical Engineering, Facultad de Químicas Universidad Complutense de Madrid Madrid Spain
| | - Eduardo Díaz
- Microbial and Plant Biotechnology Department Centro de Investigaciones Biológicas Margarita Salas‐CSIC Madrid Spain
| | - Manuel Carmona
- Microbial and Plant Biotechnology Department Centro de Investigaciones Biológicas Margarita Salas‐CSIC Madrid Spain
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7
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Pandey G, Bajpai S. Accessing the environmental impact of tellurium metal. PHYSICAL SCIENCES REVIEWS 2022. [DOI: 10.1515/psr-2021-0113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Tellurium is gaining technical significance because of being a vital constituent for the growth of green-energy products and technologies. Owing to its unique property of interchangeable oxidation states it has a tricky though interesting chemistry with basically unidentified environmental effects. The understanding of environmental actions of tellurium has significant gaps for instance, its existence and effects in various environmental sections related to mining, handling and removal and disposal methods. To bridge this gap it is required to assess its distinctive concentrations in the environment together with proper knowledge of its environmental chemistry. This in turn significantly requires developing systematic diagnostic schemes which are sensitive enough to present statistics in the concentrations which are environmentally relevant. The broad assessment of available statistics illustrates that tellurium is being found in a very scarce concentrations in various environmental sections. Very less information is available for the presence and effects of tellurium in air and natural water resources. Various soil and lake sediment analysis statistics indicate towards the presence of tellurium in soil owing to release of dust, ash and slag during mining and manufacturing practices. Computing the release and behavior of tellurium in environment needs a thorough assessment of its anthropogenic life cycle which in turn will facilitate information about its existing and prospective release in the environment, and will aid to handle the metal more sensibly.
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Affiliation(s)
- Garima Pandey
- Department of Chemistry SRM Institiute of Science and Technology , Delhi NCR Campus , Modinagar 201204, Ghaziabad , Uttar Pradesh , India
| | - Sangeeta Bajpai
- Applied Sciences , Amity University - Lucknow Campus , Malhour , Lucknow , 227028 , Uttar Pradesh , India
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8
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Nephroprotective effects of 4-4(hydroxyl-3 methoxyphenyl)-2-butane against sodium tellurite induced acute kidney dysfunction by attenuating oxidative stress and inflammatory cytokines in rats. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.103857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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9
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Das A, Banik BK. Semiconductor characteristics of tellurium and its implementations. PHYSICAL SCIENCES REVIEWS 2022. [DOI: 10.1515/psr-2021-0108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Tellurium (Te) gained worldwide attention because of its excellent properties, distinctive chained structures, and potential usages. Bulk Te is a p-type elemental helical semiconductor at room temperature and it also having a very limited band gap. Te presents fascinating characteristics such as nonlinear optical response, photoconductivity, good thermoelectric and piezoelectric properties. These charming characteristics induce Te a possible nominee for applications in field-effect transistors, IR acousto-optic deflectors, solar cells, self-developing holographic recording devices, photoconductors, gas sensors, radiative cooling devices, and topological insulators. The developments in these areas are incorporated in great detail. This study opens up the possibility of designing novel devices and considering modern applications of Tellurium.
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Affiliation(s)
- Aparna Das
- Department of Mathematics and Natural Sciences , College of Sciences and Human Studies, Prince Mohammad Bin Fahd University , Al Khobar , 31952 , Kingdom of Saudi Arabia
| | - Bimal Krishna Banik
- Department of Mathematics and Natural Sciences , College of Sciences and Human Studies, Prince Mohammad Bin Fahd University , Al Khobar , 31952 , Kingdom of Saudi Arabia
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10
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Ashraf MW, Haider SI, Solangi AR, Memon AF. Toxicity of tellurium and its compounds. PHYSICAL SCIENCES REVIEWS 2022. [DOI: 10.1515/psr-2021-0112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Tellurium (Te) is widely used in industry because of its unique physicochemical properties. In the general population, foodstuff like meat, dairy products, and cereals is the major source of tellurium exposure. In the occupational environment, inhalational exposure predominates. Due to its exceptional properties as a metalloid, Te is broadly used in the industry. For example, Te is used as an alloy for solar panels, phase change optical magnetic disks, and Peltier devices. Recently, alloys of Te with cadmium, zinc, and other metals are used for nanomaterials, such as quantum dots. Thus, it is suggested that there is an existence of risk of exposure to Te in everyday life. Commercial Te is mostly obtained from slimes of electrolytic copper refineries. Te concentration in the slimes can extend up to 10% or more. Slight levels of its organic compounds may also be absorbed via skin. Not much information is available to prove Te as carcinogenic but its toxicity is well established. The present paper will review the toxicity of Te and its compounds.
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Affiliation(s)
- Muhammad Waqar Ashraf
- Mathematics & Natural Sciences , Prince Mohammad Bin Fahd University , Azizeyah , Al-Khobar , 31952 , Saudi Arabia
| | | | - Amber Rehana Solangi
- Center of Excellence in Analytical Chemistry , University of Sindh , Jamshoro , Pakistan
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11
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Kessi J, Turner RJ, Zannoni D. Tellurite and Selenite: how can these two oxyanions be chemically different yet so similar in the way they are transformed to their metal forms by bacteria? Biol Res 2022; 55:17. [PMID: 35382884 PMCID: PMC8981825 DOI: 10.1186/s40659-022-00378-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 02/06/2022] [Indexed: 12/26/2022] Open
Abstract
This opinion review explores the microbiology of tellurite, TeO32- and selenite, SeO32- oxyanions, two similar Group 16 chalcogen elements, but with slightly different physicochemical properties that lead to intriguing biological differences. Selenium, Se, is a required trace element compared to tellurium, Te, which is not. Here, the challenges around understanding the uptake transport mechanisms of these anions, as reflected in the model organisms used by different groups, are described. This leads to a discussion around how these oxyanions are subsequently reduced to nanomaterials, which mechanistically, has controversies between ideas around the molecule chemistry, chemical reactions involving reduced glutathione and reactive oxygen species (ROS) production along with the bioenergetics at the membrane versus the cytoplasm. Of particular interest is the linkage of glutathione and thioredoxin chemistry from the cytoplasm through the membrane electron transport chain (ETC) system/quinones to the periplasm. Throughout the opinion review we identify open and unanswered questions about the microbial physiology under selenite and tellurite exposure. Thus, demonstrating how far we have come, yet the exciting research directions that are still possible. The review is written in a conversational manner from three long-term researchers in the field, through which to play homage to the late Professor Claudio Vásquez.
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Affiliation(s)
- Janine Kessi
- Until 2018 - Dept of Plant and Microbial Biology, University of Zurich, Zurich, Switzerland
| | - Raymond J. Turner
- Dept of Biological Sciences, University of Calgary, Calgary, AB Canada
| | - Davide Zannoni
- Dept of Pharmacy and Biotechnology, University of Bologna, Bologna, Italy
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12
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Huang L, Liu M, Feng Z, Xu X, Chen L, Ma Z, Li L. Biocompatible tellurium nanoneedles with long-term stable antibacterial activity for accelerated wound healing. Mater Today Bio 2022; 15:100271. [PMID: 35572856 PMCID: PMC9097717 DOI: 10.1016/j.mtbio.2022.100271] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 04/13/2022] [Accepted: 04/25/2022] [Indexed: 12/01/2022]
Abstract
Tellurium (Te) nanomaterials (NMs) have emerged as a new antibacterial candidate to respond to the complex global health challenge of bacterial resistance. Herein, Te nanoneedles (NNs) that act both chemically and physically on bacteria are synthesized by a facile method using Na2TeO3, urea and glucose. It is found that the prepared Te NNs have a strong affinity to the cell membrane of bacteria and subsequently promote the generation of reactive oxygen species (ROS) in bacteria, resulting in an excellent antibacterial effect toward Staphylococcus aureus (Gram-positive) and Escherichia coli (Gram-negative). What's more, this needle-like morphology also can physically damage the bacterial cell membranes. The Te NNs per se are inert in mammalian cells to produce ROS at a proper concentration, indicating considerable biocompatibility of this material. As a proof-of-concept, the antibacterial Te NNs were used as an anti-inflammatory reagent for promoting bacteria-infected wound healing in vivo, during which Te NNs caused no evident side effects to major organs in mice. Additionally, the antibacterial activity is maintained in the presence of surface oxidation of Te NNs after long-term dispersion in phosphate buffered saline solution. The needle-like Te NMs with long-term antibacterial stability and good biocompatibility have great potential for the treatment of associated infectious diseases.
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13
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Vieto S, Rojas-Gätjens D, Jiménez JI, Chavarría M. The potential of Pseudomonas for bioremediation of oxyanions. ENVIRONMENTAL MICROBIOLOGY REPORTS 2021; 13:773-789. [PMID: 34369104 DOI: 10.1111/1758-2229.12999] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 07/30/2021] [Indexed: 06/13/2023]
Abstract
Non-metal, metal and metalloid oxyanions occur naturally in minerals and rocks of the Earth's crust and are mostly found in low concentrations or confined in specific regions of the planet. However, anthropogenic activities including urban development, mining, agriculture, industrial activities and new technologies have increased the release of oxyanions to the environment, which threatens the sustainability of natural ecosystems, in turn affecting human development. For these reasons, the implementation of new methods that could allow not only the remediation of oxyanion contaminants but also the recovery of valuable elements from oxyanions of the environment is imperative. From this perspective, the use of microorganisms emerges as a strategy complementary to physical, mechanical and chemical methods. In this review, we discuss the opportunities that the Pseudomonas genus offers for the bioremediation of oxyanions, which is derived from its specialized central metabolism and the high number of oxidoreductases present in the genomes of these bacteria. Finally, we review the current knowledge on the transport and metabolism of specific oxyanions in Pseudomonas species. We consider that the Pseudomonas genus is an excellent starting point for the development of biotechnological approaches for the upcycling of oxyanions into added-value metal and metalloid byproducts.
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Affiliation(s)
- Sofía Vieto
- Centro Nacional de Innovaciones Biotecnológicas (CENIBiot), CeNAT-CONARE, San José, 1174-1200, Costa Rica
| | - Diego Rojas-Gätjens
- Centro Nacional de Innovaciones Biotecnológicas (CENIBiot), CeNAT-CONARE, San José, 1174-1200, Costa Rica
| | - José I Jiménez
- Department of Life Sciences, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK
| | - Max Chavarría
- Centro Nacional de Innovaciones Biotecnológicas (CENIBiot), CeNAT-CONARE, San José, 1174-1200, Costa Rica
- Centro de Investigaciones en Productos Naturales (CIPRONA), Universidad de Costa Rica, San José, 11501-2060, Costa Rica
- Escuela de Química, Universidad de Costa Rica, San José, 11501-2060, Costa Rica
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14
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Elemental Speciation Analysis in Environmental Studies: Latest Trends and Ecological Impact. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph182212135. [PMID: 34831893 PMCID: PMC8623758 DOI: 10.3390/ijerph182212135] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 11/11/2021] [Accepted: 11/15/2021] [Indexed: 02/07/2023]
Abstract
Speciation analysis is a key aspect of modern analytical chemistry, as the toxicity, environmental mobility, and bioavailability of elemental analytes are known to depend strongly on an element’s chemical species. Henceforth, great efforts have been made in recent years to develop methods that allow not only the determination of elements as a whole, but also each of its separate species. Environmental analytical chemistry has not ignored this trend, and this review aims to summarize the latest methods and techniques developed with this purpose. From the perspective of each relevant element and highlighting the importance of their speciation analysis, different sample treatment methods are introduced and described, with the spotlight on the use of modern nanomaterials and novel solvents in solid phase and liquid-liquid microextractions. In addition, an in-depth discussion of instrumental techniques aimed both at the separation and quantification of metal and metalloid species is presented, ranging from chromatographic separations to electro-chemical speciation analysis. Special emphasis is made throughout this work on the greenness of these developments, considering their alignment with the precepts of the Green Chemistry concept and critically reviewing their environmental impact.
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15
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Poland CA, Lombaert N, Mackie C, Renard A, Sinha P, Verougstraete V, Lourens NJJ. Bioaccessibility as a determining factor in the bioavailability and toxicokinetics of cadmium compounds. Toxicology 2021; 463:152969. [PMID: 34606952 DOI: 10.1016/j.tox.2021.152969] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 09/15/2021] [Accepted: 09/29/2021] [Indexed: 12/30/2022]
Abstract
Cadmium toxicity occurs where there is absorption and accumulation of cadmium ions (Cd2+) in tissues beyond tolerable levels. Significant differences in the release of Cd2+ from cadmium compounds in biological fluids, like gastric fluid, may indicate differences in bioavailability and absorption. This means that direct read-across from high solubility cadmium compounds to lower solubility compounds may not accurately reflect potential hazards. Here, the relative bioaccessibility in gastric fluid of cadmium telluride and cadmium chloride was evaluated using in vitro bioelution tests whilst the toxicokinetic behavior of these two compounds were compared after dietary administration for 90 days in male and female Wistar Han rats following OECD TG 408. Cadmium chloride was highly bioaccessible, whilst cadmium telluride showed low solubility in simulated gastric fluid (90 % and 1.5 % bioaccessibility, respectively). This difference in bioaccessibility was also reflected by a difference in bioavailability as shown by the difference in the liver and kidney concentrations of cadmium after repeat oral exposure. Feeding at doses of 750 and 1500 ppm of cadmium telluride did not result in tissue cadmium levels above the lower limit of quantification (LLOQ). In contrast, feeding with a lower test substance concentration yet higher concentration of bioaccessible cadmium (30 ppm cadmium chloride) resulted in tissue accumulation of cadmium. Only slight, non-adverse changes in hematology and clinical chemistry parameters were seen at these doses, indicating an absence of significant cadmium mediated toxicity towards target organs (kidney and liver), reflected in minimal cadmium accumulation in these organs. This study demonstrates that bioelution tests can help determine the bioaccessibility of cadmium, which can be used to estimate the potential for target tissue toxicity based on known toxicokinetic profiles and threshold levels for cadmium toxicity, while reducing and refining animal testing.
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Affiliation(s)
- Craig A Poland
- Regulatory Compliance Limited, 6 Dryden Road, Loanhead, Midlothian, EH20 9TY, UK; Centre for Inflammation Research, University of Edinburgh, Queen's Medical Research Institute, 47 Little France Crescent, Edinburgh, EH16 4TJ, UK.
| | - Noömi Lombaert
- International Zinc Association, Reach Cadmium Consortium, Avenue de Tervueren 168/Box 4, B-1150, Brussels, Belgium
| | - Carol Mackie
- Regulatory Compliance Limited, 6 Dryden Road, Loanhead, Midlothian, EH20 9TY, UK
| | - Alain Renard
- 5N Plus Inc., 4385, Rue Garand, Saint-Laurent, QC, H4R 2B4, Canada
| | - Parikhit Sinha
- First Solar, 350 West Washington Street, Suite 600, Tempe, AZ, 85281, USA
| | | | - Nicky J J Lourens
- Charles River Laboratories Den Bosch B.V., 's-Hertogenbosch, the Netherlands
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16
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Rusakova IL, Rusakov YY. Quantum chemical calculations of 77 Se and 125 Te nuclear magnetic resonance spectral parameters and their structural applications. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2021; 59:359-407. [PMID: 33095923 DOI: 10.1002/mrc.5111] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 09/01/2020] [Accepted: 10/07/2020] [Indexed: 06/11/2023]
Abstract
An accurate quantum chemical (QC) modeling of 77 Se and 125 Te nuclear magnetic resonance (NMR) spectra is deeply involved in the NMR structural assignment for selenium and tellurium compounds that are of utmost importance both in organic and inorganic chemistry nowadays due to their huge application potential in many fields, like biology, medicine, and metallurgy. The main interest of this review is focused on the progress in QC computations of 77 Se and 125 Te NMR chemical shifts and indirect spin-spin coupling constants involving these nuclei. Different computational methodologies that have been used to simulate the NMR spectra of selenium and tellurium compounds since the middle of the 1990s are discussed with a strong emphasis on their accuracy. A special accent is placed on the calculations resorting to the relativistic methodologies, because taking into account the relativistic effects appreciably influences the precision of NMR calculations of selenium and, especially, tellurium compounds. Stereochemical applications of quantum chemical calculations of 77 Se and 125 Te NMR parameters are discussed so as to exemplify the importance of integrated approach of experimental and computational NMR techniques.
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Affiliation(s)
- Irina L Rusakova
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Irkutsk, Russian Federation
| | - Yuriy Yu Rusakov
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Irkutsk, Russian Federation
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17
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Zhang S, Liang R, Du L. Prevalence of Antibiotic Resistance Genes, Heavy Metal Resistance Genes and the Class 1 Integron Gene in Well Water and Tap Water Samples from Four Cities in Henan Province, China. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2021; 106:700-706. [PMID: 33630099 DOI: 10.1007/s00128-021-03144-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Accepted: 02/05/2021] [Indexed: 06/12/2023]
Abstract
The presence of multi-resistance to both antibiotics and heavy metals in drinking water poses a significant risk to human health. Herein, we utilized qPCR to assess patterns of antibiotic resistance genes (ARGs), heavy metal resistance genes (HMRGs), and class 1 integron (intI1) gene expression levels in well and tap water samples from four cities in Henan Province, China. The relative abundance of most index values was higher in well water relative to tap water, or was highest in Shangqiu City and lowest in Puyang City on average. The expression of ARG was closely correlated with that of intI1 and HMRG in both well and tap water. Overall, our data highlighted the health threat posed by ARGs in the drinking water supply and underscore the potential for the transfer of these genes between bacteria with the aid of intI1 under selective pressure associated with human activity and heavy metal stress.
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Affiliation(s)
- Shuhong Zhang
- College of Biology and Food, Shangqiu Normal University, Shangqiu, 476000, China.
| | - Ruirui Liang
- College of Biology and Food, Shangqiu Normal University, Shangqiu, 476000, China
| | - Linnan Du
- College of Biology and Food, Shangqiu Normal University, Shangqiu, 476000, China
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18
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Ohashi N, Mora-Fonz D, Otani S, Ohgaki T, Miyakawa M, Shluger A. Inverse Perovskite Oxysilicides and Oxygermanides as Candidates for Nontoxic Infrared Semiconductor and Their Chemical Bonding Nature. Inorg Chem 2020; 59:18305-18313. [DOI: 10.1021/acs.inorgchem.0c02897] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Naoki Ohashi
- National Institute for Materials Science (NIMS), Namiki, Tsukuba, Ibaraki 305-0044, Japan
- Materials Center for Elemental Strategy (MCES), Tokyo Institute of Technology (Tokyo Tech),
Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - David Mora-Fonz
- Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, United Kingdom
| | - Shigeki Otani
- National Institute for Materials Science (NIMS), Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Takeshi Ohgaki
- National Institute for Materials Science (NIMS), Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Masashi Miyakawa
- National Institute for Materials Science (NIMS), Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Alexander Shluger
- Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, United Kingdom
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19
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Vázquez-Fernández I, Mariotti S, Hutter OS, Birkett M, Veal TD, Hobson TDC, Phillips LJ, Danos L, Nayak PK, Snaith HJ, Xie W, Sherburne MP, Asta M, Durose K. Vacancy-Ordered Double Perovskite Cs 2TeI 6 Thin Films for Optoelectronics. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2020; 32:6676-6684. [PMID: 32952296 PMCID: PMC7497706 DOI: 10.1021/acs.chemmater.0c02150] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 07/09/2020] [Indexed: 05/29/2023]
Abstract
Alternatives to lead- and tin-based perovskites for photovoltaics and optoelectronics are sought that do not suffer from the disadvantages of toxicity and low device efficiency of present-day materials. Here we report a study of the double perovskite Cs2TeI6, which we have synthesized in the thin film form for the first time. Exhaustive trials concluded that spin coating CsI and TeI4 using an antisolvent method produced uniform films, confirmed as Cs2TeI6 by XRD with Rietveld analysis. They were stable up to 250 °C and had an optical band gap of ∼1.5 eV, absorption coefficients of ∼6 × 104 cm-1, carrier lifetimes of ∼2.6 ns (unpassivated 200 nm film), a work function of 4.95 eV, and a p-type surface conductivity. Vibrational modes probed by Raman and FTIR spectroscopy showed resonances qualitatively consistent with DFT Phonopy-calculated spectra, offering another route for phase confirmation. It was concluded that the material is a candidate for further study as a potential optoelectronic or photovoltaic material.
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Affiliation(s)
- Isabel Vázquez-Fernández
- Stephenson
Institute for Renewable Energy, Deptartment of Physics, University of Liverpool, Chadwick Building, Peach Street, Liverpool L69 7ZF, United Kingdom
| | - Silvia Mariotti
- Stephenson
Institute for Renewable Energy, Deptartment of Physics, University of Liverpool, Chadwick Building, Peach Street, Liverpool L69 7ZF, United Kingdom
| | - Oliver S. Hutter
- Department
of Mathematics, Physics and Electrical Engineering, Northumbria University, Newcastle
upon Tyne NE1 8ST, United
Kingdom
| | - Max Birkett
- Stephenson
Institute for Renewable Energy, Deptartment of Physics, University of Liverpool, Chadwick Building, Peach Street, Liverpool L69 7ZF, United Kingdom
| | - Tim D. Veal
- Stephenson
Institute for Renewable Energy, Deptartment of Physics, University of Liverpool, Chadwick Building, Peach Street, Liverpool L69 7ZF, United Kingdom
| | - Theodore D. C. Hobson
- Stephenson
Institute for Renewable Energy, Deptartment of Physics, University of Liverpool, Chadwick Building, Peach Street, Liverpool L69 7ZF, United Kingdom
| | - Laurie J. Phillips
- Stephenson
Institute for Renewable Energy, Deptartment of Physics, University of Liverpool, Chadwick Building, Peach Street, Liverpool L69 7ZF, United Kingdom
| | - Lefteris Danos
- Department
of Chemistry, Lancaster University, Lancaster LA1 4YB, United Kingdom
| | - Pabitra K. Nayak
- Department
of Physics, Clarendon Laboratory, University
of Oxford, Oxford OX1 3PU, United Kingdom
- TIFR
Centre
for Interdisciplinary Sciences, Tata Institute
of Fundamental Research, Hyderabad 500107, India
| | - Henry J. Snaith
- Department
of Physics, Clarendon Laboratory, University
of Oxford, Oxford OX1 3PU, United Kingdom
| | - Wei Xie
- Department
of Materials Science and Engineering, University
of California, Berkeley, California 94720, United States
| | - Matthew P. Sherburne
- Department
of Materials Science and Engineering, University
of California, Berkeley, California 94720, United States
| | - Mark Asta
- Department
of Materials Science and Engineering, University
of California, Berkeley, California 94720, United States
| | - Ken Durose
- Stephenson
Institute for Renewable Energy, Deptartment of Physics, University of Liverpool, Chadwick Building, Peach Street, Liverpool L69 7ZF, United Kingdom
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20
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Rusakov YY, Rusakova IL. What Most Affects the Accuracy of 125Te NMR Chemical Shift Calculations. J Phys Chem A 2020; 124:6714-6725. [DOI: 10.1021/acs.jpca.0c05780] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Yu. Yu. Rusakov
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Favorsky St. 1, 664033 Irkutsk, Russian Federation
| | - I. L. Rusakova
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Favorsky St. 1, 664033 Irkutsk, Russian Federation
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21
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22
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Cesario D, Fortino M, Marino T, Nunzi F, Russo N, Sicilia E. The role of the halogen bond in iodothyronine deiodinase: Dependence on chalcogen substitution in naphthyl-based mimetics. J Comput Chem 2020; 40:944-951. [PMID: 30681189 DOI: 10.1002/jcc.25775] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2018] [Revised: 12/07/2018] [Accepted: 12/14/2018] [Indexed: 11/06/2022]
Abstract
The effects on the activity of thyroxine (T4) due to the chalcogen replacement in a series of peri-substituted naphthalenes mimicking the catalytic function of deiodinase enzymes are computationally examined using density functional theory. In particular, T4 inner-ring deiodination pathways assisted by naphthyl-based models bearing two tellurols and a tellurol-thiol pair in peri-position are explored and compared with the analogous energy profiles for the naphthalene mimic having two selenols. The presence of a halogen bond (XB) in the intermediate formed in the first step and involved in the rate-determining step of the reaction is assumed to facilitate the process increasing the rate of the reaction. The rate-determining step calculated energy barrier heights allow rationalizing the experimentally observed superior catalytic activity of tellurium containing mimics. Charge displacement analysis is used to ascertain the presence and the role of the electron density charge transfer occurring in the rate-determining step of the reaction, suggesting the incipient formation or presence of a XB interaction. © 2019 Wiley Periodicals, Inc.
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Affiliation(s)
- Diego Cesario
- Department of Chemistry and Pharmaceutical Sciences, Amsterdam Center for Multiscale Modeling, Vrije Universiteit Amsterdam, 1081 HV, Amsterdam, The Netherlands.,Department of Chemistry, Biology and Biotechnology, University of Perugia, I-06123, Perugia, Italy
| | - Mariagrazia Fortino
- Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, I-87030, Arcavacata di Rende, Italy
| | - Tiziana Marino
- Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, I-87030, Arcavacata di Rende, Italy
| | - Francesca Nunzi
- Department of Chemistry, Biology and Biotechnology, University of Perugia, I-06123, Perugia, Italy.,Istituto di Scienze e Tecnologie Molecolari del CNR (ISTM-CNR), I-06123, Perugia, Italy.,Consortium for Computational Molecular and Materials Sciences (CMS)2, I-06123, Perugia, Italy
| | - Nino Russo
- Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, I-87030, Arcavacata di Rende, Italy
| | - Emilia Sicilia
- Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, I-87030, Arcavacata di Rende, Italy
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23
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Khuwaja G, Al-Bratty M, Alhazmi HA, Khan A, Safhi MM, Ashafaq M, Islam F, Islam F, Taha MM. Pharmacological melioration by Selenium on the toxicity of tellurium in neuroendocrine centre (Pituitary Gland) in male wistar rats: A mechanistic approach. Saudi Pharm J 2020; 28:630-636. [PMID: 32435145 PMCID: PMC7229321 DOI: 10.1016/j.jsps.2020.04.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Accepted: 04/05/2020] [Indexed: 12/11/2022] Open
Abstract
Purpose The present research was designed to evaluate the toxicity of tellurium and its prevention by selenium on the pituitary gland in male Wistar rats. Methods 30 rats were used weighing 200–250 gm, and randomly divided them into five groups. Each group contained an equal number of animals. Group-1 was nominated as control group. Group-2 received an intraperitoneal dose of selenium 0.3 mg per kg body wt. Group-3 was administered with tellurium 4.15 mg per kg body wt. Group-4 was given low-dose (L) of both selenium 0.15 and tellurium 2.075, Group-5 was given High-dose (H) of both selenium 0.3 and tellurium 4.15 mg/kg body wt. orally once in a day. After 15 days of dosing, the behavioral activities- motor co-ordination rotarod and grip strength test were measured. On 16th-day animals were sacrificed and activity of LPO, GSH, caspase-3, caspase-9, GPx, GR, SOD, catalase, and AChE were performed on the pituitary gland as per standard method reported. Results Se when given together with Te, significantly protects the motor coordination up to 32.5%, and also protects the grip strength up to 75% in group 4 and 5 respectively as compared to group- 3. Se + Te treatment protects the activity of TBARS up to 48.68% and GSH is 58%. As compared to control, it protects caspase-3 up to 118% and caspase-9 up to 83%. The level of AChE was also observed to be modulated by the administration of Se in Group- 4 and 5. Se + Te protected AChE up to 28.6%. Similar findings were observed for the biochemical activities of GPx (140% protection), SOD (458%), GR (159%), and catalase (95%) activities that were protected significantly Se + Te in Group- 4 and 5. Conclusion Selenium dose-dependently protects behavioral activities. It also protects apoptosis, oxidative stress, and AChE activities in the pituitary gland.
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Affiliation(s)
- Gulrana Khuwaja
- Department of Pharmaceutical Chemistry, College of Pharmacy, Jazan University, Jazan, Saudi Arabia
| | - Mohammed Al-Bratty
- Department of Pharmaceutical Chemistry, College of Pharmacy, Jazan University, Jazan, Saudi Arabia
| | - Hassan A Alhazmi
- Department of Pharmaceutical Chemistry, College of Pharmacy, Jazan University, Jazan, Saudi Arabia.,Substance Abuse Research Centre (SARC), College of Pharmacy, Jazan University, Jazan, Saudi Arabia
| | - Andleeb Khan
- Department of Pharmacology and Toxicology, College of Pharmacy, Jazan University, Jazan, Saudi Arabia
| | - Mohammad M Safhi
- Department of Pharmacology and Toxicology, College of Pharmacy, Jazan University, Jazan, Saudi Arabia
| | - Mohammad Ashafaq
- Department of Pharmacology and Toxicology, College of Pharmacy, Jazan University, Jazan, Saudi Arabia
| | - Farha Islam
- Department of Pharmaceutics, College of Pharmacy, Jazan University, Saudi Arabia
| | - Fakhrul Islam
- Department of Pharmacology and Toxicology, College of Pharmacy, Jazan University, Jazan, Saudi Arabia
| | - Manal M Taha
- Substance Abuse Research Centre (SARC), College of Pharmacy, Jazan University, Jazan, Saudi Arabia
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24
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Issa YM, Abdel-Fattah HM, Shehab OR, Mohamed NB. The use of optical and atomic force microscopy for probing the sensing mechanism of hazardous tellurium species for environmental applications. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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25
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Şahin İ, Durak BY, Sağsöz O, Büyükpınar Ç, Bakırdere S. Optimization of T-shape slotted quartz tube with exit holes-atom trap-flame atomic absorption spectrophotometry system for the accurate and sensitive determination of tellurium in tap water. ENVIRONMENTAL MONITORING AND ASSESSMENT 2019; 192:61. [PMID: 31865447 DOI: 10.1007/s10661-019-8043-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Accepted: 12/16/2019] [Indexed: 06/10/2023]
Abstract
Tellurium has been widely used in industrial processes and daily life products, and can cause serious health problems upon exposure. Therefore, determination of tellurium in real-life samples is very crucial. In this study, an accurate, environmentally friendly, and inexpensive analytical method was developed to determine trace levels of tellurium in water samples. To lower the detection limits, system parameters including flame type, acetylene flow rate, slotted quartz tube (T-SQT) height, and trapping period were optimized. Under the optimum conditions, the limit of detection (LOD) and quantification (LOQ) were calculated as 14.1 ng/mL and 47.1 ng/mL, respectively. For recovery studies, the optimized T-SQT-AT-FAAS method was applied to tap water samples to determine trace levels of tellurium and recovery results were found between 91.1 and 111.3%. Relative standard deviation value (%RSD) of the developed method was found to be less than 5.0% even for the lowest concentration in calibration plot, specifying good accuracy and high applicability of the method for water samples. Graphical abstract .
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Affiliation(s)
- İpek Şahin
- Department of Chemistry, Yıldız Technical University, 34220, İstanbul, Turkey
| | - Büşra Yılmaz Durak
- Department of Chemistry, Yıldız Technical University, 34220, İstanbul, Turkey
| | - Oğuzhan Sağsöz
- Department of Chemistry, Yıldız Technical University, 34220, İstanbul, Turkey
| | - Çağdaş Büyükpınar
- Department of Chemistry, Yıldız Technical University, 34220, İstanbul, Turkey
| | - Sezgin Bakırdere
- Department of Chemistry, Yıldız Technical University, 34220, İstanbul, Turkey.
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26
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Diphenyl Ditelluride: Redox-Modulating and Antiproliferative Properties. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:2510936. [PMID: 31772702 PMCID: PMC6854260 DOI: 10.1155/2019/2510936] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/18/2018] [Revised: 03/09/2019] [Accepted: 07/11/2019] [Indexed: 11/17/2022]
Abstract
Tellurium is a rare element that has been regarded as a toxic, nonessential element, and its biological role is not clearly established. In addition, the biological effects of elemental tellurium and some of its organic and inorganic derivatives have been studied, leading to a set of interesting and promising applications. Diphenyl ditelluride (DPDT), an organic tellurium derivate, showed antioxidant, antigenotoxic, antimutagenic, and anticancer properties. The antioxidant and prooxidant properties of DPDT are complex and depend on experimental conditions, which may explain the contradictory reports of these properties. In addition, DPDT may exert its effects through different pathways, including distinct ones to those responsible for chemotherapy resistance phenotypes: transcription factors, membrane receptors, adhesion, structural molecules, cell cycle regulatory components, and apoptosis pathways. This review aims to present recent advances in our understanding of the biological effects, therapeutic potential, and safety of DPDT treatment. Moreover, original results demonstrating the cytotoxic effects of DPDT in different mammalian cell lines and systems biology analysis are included, and emerging approaches for possible future applications are inferred.
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27
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Gautam M, Park DH, Park SJ, Nam KS, Park GY, Hwang J, Yong CS, Kim JO, Byeon JH. Plug-In Safe-by-Design Nanoinorganic Antibacterials. ACS NANO 2019; 13:12798-12809. [PMID: 31689083 DOI: 10.1021/acsnano.9b04939] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Due to antimicrobial resistance and the adverse health effects that follow broad and inappropriate use of antibacterial agents, new classes of antibacterials with broad and strong bactericidal activity and safety for human use are urgently required globally, increasingly so with the onset of climate change. However, R&D in this field is known to be rarely profitable, unless a cost-effective, flexible, and convenient platform that ensures the production of workable candidate antibacterials can be developed. To address this issue, inorganic nanomaterials have been considered for their bactericidal activities, yet further investigations of composition crystalline modifications and/or surface biomaterial coatings are still required to provide effective and safe antibacterial nanoparticles. In this study, we developed a plug-in system comprising a spark plasma reactor and a flow heater under nitrogen gas flow to supply precursor inorganic nanoparticles (Cu-Te configuration) that can be modulated in-flight at different temperatures. From antibacterial and toxicological assays in both in vitro and in vivo models, bactericidal and toxicological profiles showed that the plug-in system-based platform can be used to identify key parameters for producing safe-by-design agents with antibacterial activity [>88% (in vitro) and >80% (in vivo) in antibacterial efficiency] and safety (>65% in in vitro viability and >60% in in vivo survival rate).
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Affiliation(s)
- Milan Gautam
- College of Pharmacy , Yeungnam University , Gyeongsan 38541 , Republic of Korea
| | - Dae Hoon Park
- School of Mechanical Engineering , Yonsei University , Seoul 03722 , Republic of Korea
| | - Sung Jae Park
- School of Mechanical Engineering , Yonsei University , Seoul 03722 , Republic of Korea
| | - Kang Sik Nam
- School of Mechanical Engineering , Yonsei University , Seoul 03722 , Republic of Korea
| | - Geun Young Park
- School of Mechanical Engineering , Yonsei University , Seoul 03722 , Republic of Korea
| | - Jungho Hwang
- School of Mechanical Engineering , Yonsei University , Seoul 03722 , Republic of Korea
| | - Chul Soon Yong
- College of Pharmacy , Yeungnam University , Gyeongsan 38541 , Republic of Korea
| | - Jong Oh Kim
- College of Pharmacy , Yeungnam University , Gyeongsan 38541 , Republic of Korea
| | - Jeong Hoon Byeon
- School of Mechanical Engineering , Yeungnam University , Gyeongsan 38541 , Republic of Korea
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28
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Choi D, Jeong KS. Midwavelength Infrared Photoluminescence and Lasing of Tellurium Elemental Solid and Microcrystals. J Phys Chem Lett 2019; 10:4303-4309. [PMID: 31306579 DOI: 10.1021/acs.jpclett.9b01523] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Tellurium has been of great interest in physics, chemistry, material science, and more recently in nanoscience. However, information on the photoluminescence of Te crystals, crucial in understanding the material, has never been disclosed. Here, we present photoluminescence and lasing for the Te bulk crystal and microcrystals. Photoluminescence of Te bulk solid crystal was observed at 3.75 μm in the midwavelength infrared (MWIR) region, matching the theoretically predicted value well. With increasing the photoexcitation intensity or decreasing temperature, we successfully observed MWIR random lasing of the bulk Te crystals at 3.62 μm. Furthermore, the rod-shaped Te microcrystals efficiently exhibit second harmonic and third harmonic lasing at MWIR and short-wavelength infrared regions, respectively. Nonlinear coherent MWIR lasing from the Te microcrystals will serve as an excellent mid-IR light source, opening up new applications in infrared photonics, extremely long-depth penetration bioimaging, and optoelectronics.
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Affiliation(s)
- Dongsun Choi
- Department of Chemistry , Korea University , Seoul 02841 , Republic of Korea
| | - Kwang Seob Jeong
- Department of Chemistry , Korea University , Seoul 02841 , Republic of Korea
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Wu Y, Guo T, Qiu Y, Lin Y, Yao Y, Lian W, Lin L, Song J, Yang H. An inorganic prodrug, tellurium nanowires with enhanced ROS generation and GSH depletion for selective cancer therapy. Chem Sci 2019; 10:7068-7075. [PMID: 31588274 PMCID: PMC6676468 DOI: 10.1039/c9sc01070j] [Citation(s) in RCA: 75] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 06/04/2019] [Indexed: 12/12/2022] Open
Abstract
Organic prodrugs have been widely reported to avoid side effects and have been applied for precise tumor therapy in recent years. However, inorganic nano-prodrugs with localized generation of toxic products in the tumor have not been reported. Herein, we report an inorganic nano-prodrug, tellurium nanowires (TeNWs), that generate toxic TeO6 6- triggered by hydrogen peroxide (H2O2) for highly selective cancer chemotherapy. Bovine serum albumin and dextran conjugate coated TeNWs, with a length of ∼82 nm and a width of ∼7 nm, showed high stability in physiological medium. The interaction between TeNWs and intracellular H2O2 produces toxic TeO6 6- molecules greatly enhanced ROS generation, and the reaction product, verified as TeO6 6-, would react with glutathione (GSH) and thus decrease intracellular GSH levels, which greatly increases ROS levels in the tumor. Importantly, TeNWs selectively kill cancer cells by caspase-independent autophagic death and apoptosis, as well as exerting an immune response, while not affecting normal cells due to the high H2O2 levels in cancer cells. Moreover, after the sequential reaction with H2O2 and GSH, TeNWs were dissociated into small molecules and could be rapidly and completely removed from the body. Both in vitro and in vivo experiments indicate that TeNWs are a promising inorganic nano-prodrug that exerts good selective therapeutic effects on tumors.
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Affiliation(s)
- Ying Wu
- MOE Key Laboratory for Analytical Science of Food Safety and Biology , State Key Laboratory of Photocatalysis on Energy and Environment , College of Chemistry , Fuzhou University , Fuzhou 350116 , P. R. China . ;
| | - Tao Guo
- MOE Key Laboratory for Analytical Science of Food Safety and Biology , State Key Laboratory of Photocatalysis on Energy and Environment , College of Chemistry , Fuzhou University , Fuzhou 350116 , P. R. China . ;
| | - Yuan Qiu
- MOE Key Laboratory for Analytical Science of Food Safety and Biology , State Key Laboratory of Photocatalysis on Energy and Environment , College of Chemistry , Fuzhou University , Fuzhou 350116 , P. R. China . ;
| | - Yan Lin
- MOE Key Laboratory for Analytical Science of Food Safety and Biology , State Key Laboratory of Photocatalysis on Energy and Environment , College of Chemistry , Fuzhou University , Fuzhou 350116 , P. R. China . ;
| | - Yunyan Yao
- MOE Key Laboratory for Analytical Science of Food Safety and Biology , State Key Laboratory of Photocatalysis on Energy and Environment , College of Chemistry , Fuzhou University , Fuzhou 350116 , P. R. China . ;
| | - Weibin Lian
- Department of Breast Surgery , Quanzhou First Hospital of Fujian , Medical University , Quanzhou 362000 , P. R. China
| | - Lisen Lin
- National Institute of Neurological Disorders and Stroke (NINDS) , National Institutes of Health (NIH) , Bethesda , Maryland 20892 , USA
| | - Jibin Song
- MOE Key Laboratory for Analytical Science of Food Safety and Biology , State Key Laboratory of Photocatalysis on Energy and Environment , College of Chemistry , Fuzhou University , Fuzhou 350116 , P. R. China . ;
| | - Huanghao Yang
- MOE Key Laboratory for Analytical Science of Food Safety and Biology , State Key Laboratory of Photocatalysis on Energy and Environment , College of Chemistry , Fuzhou University , Fuzhou 350116 , P. R. China . ;
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Tellurium epigenetic transgenerational effects on behavioral expression of coping behavior in rats. PROGRESS IN BRAIN RESEARCH 2019; 245:247-261. [PMID: 30961869 DOI: 10.1016/bs.pbr.2019.03.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
An increasing interest has been developed in the past 15 years in the relationship between trace elements and cell functioning. In the present work the possibility of transgenerational effects of Te was investigated in rats. F1 generation exposed to K2TeO3 (1.55nM) from day 1 of pregnancy until litters were 30 day old, these animals with no other treatment than tap water and food were let to reach 60-70 day old. At this age, female rats were mated with normal untreated male rats. The F2 generation also without any Te treatment was allowed to grow until 30 days of age. At this age, behavioral tests measuring exploration induced by novelty, lateralized exploration, social interaction and survival behavior were applied. Results showed that head-dipping, rearing, lateralized exploration, social interaction, and survival behaviors, affected by Te treatment in F1 generation, also were modified in the same manner in F2 generation. These data show that Te effects on coping behavior in rats are preserved epigenetically in the next generation.
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Bueno D, Meinerz D, Waczuk E, de Souza D, Batista Rocha J. Toxicity of organochalcogens in human leukocytes is associated, but not directly related with reactive species production, apoptosis and changes in antioxidant gene expression. Free Radic Res 2018; 52:1158-1169. [DOI: 10.1080/10715762.2018.1536824] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Diones Bueno
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Daiane Meinerz
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Emily Waczuk
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Diego de Souza
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - João Batista Rocha
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Santa Maria, Santa Maria, Brazil
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Berenguel O, de S Pessôa G, Arruda MAZ. Total content and in vitro bioaccessibility of tellurium in Brazil nuts. J Trace Elem Med Biol 2018; 48:46-51. [PMID: 29773192 DOI: 10.1016/j.jtemb.2018.02.026] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Revised: 02/02/2018] [Accepted: 02/26/2018] [Indexed: 01/07/2023]
Abstract
Alongside the Brazil nut's role as an excellent source of vitamins, oil, fatty acids, lipids and nutrients, it is also recognized as a rich source of selenium. The pathway along which selenium and sulfur are metabolized in plants is theorized to be the same as that used for tellurium. Total tellurium content and its bioaccessibility are then evaluated by ICP-MS. Interferences and sample preparation are evaluated for the accurate determination of tellurium, and the accuracy determined through analysis of the certified reference material 1643e. A concentration of 4.02 ± 0.391 ng g-1 is obtained as an average concentration through external and internal calibrations. Through this reliable result, tellurium bioaccessibility in Brazil nuts is obtained via an in vitro validated unified bioaccessibility method. Values of 32% and 30% of total tellurium are available in the gastric and gastrointestinal fractions, respectively.
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Affiliation(s)
- Otávio Berenguel
- Spectrometry, Sample Preparation and Mechanization Group - GEPAM, Institute of Chemistry, University of Campinas - Unicamp, P.O. Box 6154, 13083-970, Campinas, SP, Brazil; National Institute of Science and Technology for Bioanalytics, Institute of Chemistry, University of Campinas - Unicamp, P.O. Box 6154, 13083-970, Campinas, SP, Brazil
| | - Gustavo de S Pessôa
- Spectrometry, Sample Preparation and Mechanization Group - GEPAM, Institute of Chemistry, University of Campinas - Unicamp, P.O. Box 6154, 13083-970, Campinas, SP, Brazil
| | - Marco A Z Arruda
- Spectrometry, Sample Preparation and Mechanization Group - GEPAM, Institute of Chemistry, University of Campinas - Unicamp, P.O. Box 6154, 13083-970, Campinas, SP, Brazil; National Institute of Science and Technology for Bioanalytics, Institute of Chemistry, University of Campinas - Unicamp, P.O. Box 6154, 13083-970, Campinas, SP, Brazil.
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Wiklund JA, Kirk JL, Muir DCG, Carrier J, Gleason A, Yang F, Evans M, Keating J. Widespread Atmospheric Tellurium Contamination in Industrial and Remote Regions of Canada. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:6137-6145. [PMID: 29692170 DOI: 10.1021/acs.est.7b06242] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
High tech applications, primarily photovoltaics, have greatly increased demand for the rare and versatile but toxic element tellurium (Te). Here we examine dated lake sediment Te concentration profiles collected near potential point sources (metal smelters, coal mining/combustion facilities, oil sands operations) and from rural regions and remote natural areas of Canada. Te contamination was most prevalent near a Cu/Zn smelter where observed deposition infers 21 g Te released per metric ton (t) of Cu processed. Globally, 9,500 t is predicted to have been atmospherically deposited near Cu smelters post-1900. In a remote area of central Canada (Experimental Lakes Area; ELA), preindustrial Te deposition rates were equivalent to the estimated average global mass flux supplied from natural sources; however more surprisingly, modern Te deposition rates were 6-fold higher and comparable with Te measurements in precipitation. We therefore suggest that sediment cores reliably record atmospheric Te deposition and that anthropogenic activities have significantly augmented atmospheric Te levels, making it an emerging contaminant of potential concern. Lake water residence time was found to influence lake sediment Te inventories among lakes within a region. The apparent settling rate for Te was comparable to macronutrients (C, N, P), likely indicative of significant biological processing of Te.
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Affiliation(s)
| | | | | | | | | | | | - Marlene Evans
- Aquatic Contaminants Research Division , Environment Canada , Saskatoon , Saskatchewan , Canada S7N 3H5
| | - Jonathan Keating
- Aquatic Contaminants Research Division , Environment Canada , Saskatoon , Saskatchewan , Canada S7N 3H5
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Abstract
Tellurium (Te) is widely used in industry because it has unique physicochemical properties. Although Te is a non-essential element in animals and plants, it is expected to be metabolized to organometallic compounds having a carbon-Te bond in living organisms exposed to inorganic Te compounds. Thus, the speciation and identification of tellurometabolites are expected to contribute to the depiction of the metabolic chart of Te. Speciation by elemental mass spectrometry and identification by molecular mass spectrometry coupled with separation techniques have significantly contributed to the discovery of tellurometabolites in animals and plants. The aim of this mini review is to present recent advances in the biology and toxicology of tellurium as revealed by speciation and identification by molecular mass spectrometry.
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Affiliation(s)
- Yasumitsu Ogra
- Laboratory of Toxicology and Environmental Health, Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo, Chiba 260-8675, Japan.
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Zare B, Nami M, Shahverdi AR. Tracing Tellurium and Its Nanostructures in Biology. Biol Trace Elem Res 2017; 180:171-181. [PMID: 28378115 DOI: 10.1007/s12011-017-1006-2] [Citation(s) in RCA: 21] [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: 01/03/2017] [Accepted: 03/28/2017] [Indexed: 12/15/2022]
Abstract
Tellurium (Te) is a semimetal rare element in nature. Together with oxygen, sulfur (S), and selenium (Se), Te is considered a member of chalcogen group. Over recent decades, Te applications continued to emerge in different fields including metallurgy, glass industry, electronics, and applied chemical industries. Along these lines, Te has recently attracted research attention in various fields. Though Te exists in biologic organisms such as microbes, yeast, and human body, its importance and role and some of its potential implications have long been ignored. Some promising applications of Te using its inorganic and organic derivatives including novel Te nanostructures are being introduced. Before discovery and straightforward availability of antibiotics, Te had considered and had been used as an antibacterial element. Antilishmaniasis, antiinflammatory, antiatherosclerotic, and immuno-modulating properties of Te have been described for many years, while the innovative applications of Te have started to emerge along with nanotechnological advances over the recent years. Te quantum dots (QDs) and related nanostructures have proposed novel applications in the biological detection systems such as biosensors. In addition, Te nanostructures are used in labeling, imaging, and targeted drug delivery systems and are tested for antibacterial or antifungal properties. In addition, Te nanoparticles show novel lipid-lowering, antioxidant, and free radical scavenging properties. This review presents an overview on the novel forms of Te, their potential applications, as well as related toxicity profiles.
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Affiliation(s)
- Bijan Zare
- Department of Medical Biotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Lane 29, Ghasrdasht Street, Shiraz, 187918989, Iran.
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.
| | - Mohammad Nami
- Department of Neuroscience, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Lane 29, Gasrdasht Street, Shiraz, 187918989, Iran
- Shiraz Neuroscience Research Center, Shiraz University of Medical Sciences, Lane 29, Gasrdasht Street, Shiraz, 187918989, Iran
| | - Ahmad-Reza Shahverdi
- Department of Pharmaceutical Biotechnology and Recombinant Vaccine Research Center, Tehran University of Medical Sciences, School of Pharmacy, Enghelab Avenue, Tehran, Iran
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Ramos-Ruiz A, Wilkening JV, Field JA, Sierra-Alvarez R. Leaching of cadmium and tellurium from cadmium telluride (CdTe) thin-film solar panels under simulated landfill conditions. JOURNAL OF HAZARDOUS MATERIALS 2017; 336:57-64. [PMID: 28472709 PMCID: PMC5607867 DOI: 10.1016/j.jhazmat.2017.04.052] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 04/20/2017] [Accepted: 04/21/2017] [Indexed: 05/21/2023]
Abstract
A crushed non-encapsulated CdTe thin-film solar cell was subjected to two standardized batch leaching tests (i.e., Toxicity Characteristic Leaching Procedure (TCLP) and California Waste Extraction Test (WET)) and to a continuous-flow column test to assess cadmium (Cd) and tellurium (Te) dissolution under conditions simulating the acidic- and the methanogenic phases of municipal solid waste landfills. Low levels of Cd and Te were solubilized in both batch leaching tests (<8.2% and <3.6% of added Cd and Te, respectively). On the other hand, over the course of 30days, 73% of the Cd and 21% of the Te were released to the synthetic leachate of a continuous-flow column simulating the acidic landfill phase. The dissolved Cd concentration was 3.24-fold higher than the TCLP limit (1mgL-1), and 650-fold higher than the maximum contaminant level established by the US-EPA for this metal in drinking water (0.005mgL-1). In contrast, the release of Cd and Te to the effluent of the continuous-flow column simulating the methanogenic phase of a landfill was negligible. The remarkable difference in the leaching behavior of CdTe in the columns is related to different aqueous pH and redox conditions promoted by the microbial communities in the columns, and is in agreement with thermodynamic predictions.
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Affiliation(s)
- Adriana Ramos-Ruiz
- Department of Chemical and Environmental Engineering, The University of Arizona, P. O. Box 210011, Tucson, AZ, 85721-0011, USA
| | - Jean V Wilkening
- Department of Chemical and Environmental Engineering, The University of Arizona, P. O. Box 210011, Tucson, AZ, 85721-0011, USA
| | - James A Field
- Department of Chemical and Environmental Engineering, The University of Arizona, P. O. Box 210011, Tucson, AZ, 85721-0011, USA
| | - Reyes Sierra-Alvarez
- Department of Chemical and Environmental Engineering, The University of Arizona, P. O. Box 210011, Tucson, AZ, 85721-0011, USA.
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Ogra Y. Speciation and Identification of Chalcogen-Containing Metabolites. Metallomics 2017. [DOI: 10.1007/978-4-431-56463-8_2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Metal and metalloid containing natural products and a brief overview of their applications in biology, biotechnology and biomedicine. Biometals 2015; 29:1-13. [DOI: 10.1007/s10534-015-9892-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Accepted: 10/29/2015] [Indexed: 10/22/2022]
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Ogra Y, Awaya Y, Anan Y. Comparison of accumulation of four metalloids in Allium sativum. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2015; 94:604-608. [PMID: 25733447 DOI: 10.1007/s00128-015-1508-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Accepted: 02/25/2015] [Indexed: 06/04/2023]
Abstract
In this study, we evaluated the accumulation and metabolism of four metalloids: arsenic (As), selenium (Se), antimony (Sb), and tellurium (Te) in garlic to determine whether garlic can be used for the phytoremediation of those metalloids. Garlic was able to efficiently accumulate As and Se, the two-fourth-period metalloids. However, it was not able to accumulate Sb and Te, the two-fifth-period metalloids, because their bioaccumulation factors were below one. Speciation analyses revealed that four metalloids could be metabolized in garlic, although their metabolites could not be identified yet. Results also suggested that garlic was able to distinguish the metalloids in groups 15 and 16 and the fourth and fifth periods, i.e., As, Se, Sb, and Te. Therefore, garlic is one of the potential plants for the phytoremediation of the fourth-period metalloids.
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Affiliation(s)
- Yasumitsu Ogra
- Laboratory of Chemical Toxicology and Environmental Health, Showa Pharmaceutical University, Machida, Tokyo, 194-8543, Japan,
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Zeng C, Ramos-Ruiz A, Field JA, Sierra-Alvarez R. Cadmium telluride (CdTe) and cadmium selenide (CdSe) leaching behavior and surface chemistry in response to pH and O2. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2015; 154:78-85. [PMID: 25710599 DOI: 10.1016/j.jenvman.2015.02.033] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Revised: 02/15/2015] [Accepted: 02/18/2015] [Indexed: 06/04/2023]
Abstract
Cadmium telluride (CdTe) and cadmium selenide (CdSe) are increasingly being applied in photovoltaic solar cells and electronic components. A major concern is the public health and ecological risks associated with the potential release of toxic cadmium, tellurium, and/or selenium species. In this study, different tests were applied to investigate the leaching behavior of CdTe and CdSe in solutions simulating landfill leachate. CdTe showed a comparatively high leaching potential. In the Toxicity Characteristic Leaching Procedure (TCLP) and Waste Extraction Test (WET), the concentrations of cadmium released from CdTe were about 1500 and 260 times higher than the regulatory limit (1 mg/L). In contrast, CdSe was relatively stable and dissolved selenium in both leaching tests was below the regulatory limit (1 mg/L). Nonetheless, the regulatory limit for cadmium was exceeded by 5- to 6- fold in both tests. Experiments performed under different pH and redox conditions confirmed a marked enhancement in CdTe and CdSe dissolution both at acidic pH and under aerobic conditions. These findings are in agreement with thermodynamic predictions. Taken as a whole, the results indicate that recycling of decommissioned CdTe-containing devices is desirable to prevent the potential environmental release of toxic cadmium and tellurium in municipal landfills.
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Affiliation(s)
- Chao Zeng
- Department of Chemical and Environmental Engineering, University of Arizona, P.O. Box 210011, Tucson, AZ 85704, USA.
| | - Adriana Ramos-Ruiz
- Department of Chemical and Environmental Engineering, University of Arizona, P.O. Box 210011, Tucson, AZ 85704, USA
| | - Jim A Field
- Department of Chemical and Environmental Engineering, University of Arizona, P.O. Box 210011, Tucson, AZ 85704, USA
| | - Reyes Sierra-Alvarez
- Department of Chemical and Environmental Engineering, University of Arizona, P.O. Box 210011, Tucson, AZ 85704, USA
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Tokumoto M, Kutsukake N, Yamanishi E, Katsuta D, Anan Y, Ogra Y. Arsenic (+3 oxidation state) methyltransferase is a specific but replaceable factor against arsenic toxicity. Toxicol Rep 2014; 1:589-595. [PMID: 28962272 PMCID: PMC5598430 DOI: 10.1016/j.toxrep.2014.08.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Revised: 08/22/2014] [Accepted: 08/23/2014] [Indexed: 01/31/2023] Open
Abstract
AS3MT catalyzed the methylation of arsenic. Selenium and tellurium were not methylated in the presence of AS3MT. AS3MT knockdown had no effect on the cytotoxicity of arsenic.
Inorganic metalloids, such as arsenic (As), antimony (Sb), selenium (Se), and tellurium (Te), are methylated in biota. In particular, As, Se, and Te are methylated and excreted in urine. The biomethylation is thought to be a means to detoxify the metalloids. The methylation of As is catalyzed by arsenic (+3 oxidation state) methyltransferase (AS3MT). However, it is still unclear whether AS3MT catalyzes the methylation of the other metalloids. It is also unclear whether other factors catalyze the As methylation instead of AS3MT. Recombinant human AS3MT (rhAS3MT) was prepared and used in the in vitro methylation of As, Se, and Te. As, but not Se and Te, was specifically methylated in the presence of rhAS3MT. Then, siRNA targeting AS3MT was introduced into human hepatocarcinoma (HepG2) cells. Although AS3MT protein expression was completely silenced by the gene knockdown, no increase in As toxicity was found in the HepG2 cells transfected with AS3MT-targeting siRNA. We conclude that AS3MT catalyzes the methylation of As and not other biomethylatable metalloids, such as Se and Te. We speculate that other methylation enzyme(s) also catalyze the methylation of As in HepG2 cells.
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Affiliation(s)
| | | | | | | | | | - Yasumitsu Ogra
- Corresponding author. Tel.: +81 42 721 1563; fax: +81 42 721 1563
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Signaling mechanisms and disrupted cytoskeleton in the diphenyl ditelluride neurotoxicity. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2014; 2014:458601. [PMID: 25050142 PMCID: PMC4090446 DOI: 10.1155/2014/458601] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Accepted: 02/26/2014] [Indexed: 01/14/2023]
Abstract
Evidence from our group supports that diphenyl ditelluride (PhTe)2 neurotoxicity depends on modulation of signaling pathways initiated at the plasma membrane. The (PhTe)2-evoked signal is transduced downstream of voltage-dependent Ca2+ channels (VDCC), N-methyl-D-aspartate receptors (NMDA), or metabotropic glutamate receptors activation via different kinase pathways (protein kinase A, phospholipase C/protein kinase C, mitogen-activated protein kinases (MAPKs), and Akt signaling pathway). Among the most relevant cues of misregulated signaling mechanisms evoked by (PhTe)2 is the cytoskeleton of neural cells. The in vivo and in vitro exposure to (PhTe)2 induce hyperphosphorylation/hypophosphorylation of neuronal and glial intermediate filament (IF) proteins (neurofilaments and glial fibrillary acidic protein, resp.) in different brain structures of young rats. Phosphorylation of IFs at specific sites modulates their association/disassociation and interferes with important physiological roles, such as axonal transport. Disrupted cytoskeleton is a crucial marker of neurodegeneration and is associated with reactive astrogliosis and apoptotic cell death. This review focuses the current knowledge and important results on the mechanisms of (PhTe)2 neurotoxicity with special emphasis on the cytoskeletal proteins and their differential regulation by kinases/phosphatases and Ca2+-mediated mechanisms in developmental rat brain. We propose that the disrupted cytoskeletal homeostasis could support brain damage provoked by this neurotoxicant.
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Boriová K, Cerňanský S, Matúš P, Bujdoš M, Simonovičová A. Bioaccumulation and biovolatilization of various elements using filamentous fungus Scopulariopsis brevicaulis. Lett Appl Microbiol 2014; 59:217-23. [PMID: 24712346 DOI: 10.1111/lam.12266] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2013] [Revised: 03/06/2014] [Accepted: 04/04/2014] [Indexed: 01/15/2023]
Abstract
UNLABELLED Biovolatilization and bioaccumulation capabilities of different elements by microscopic filamentous fungus Scopulariopsis brevicaulis were observed. Accumulation of As(III), As(V), Se(IV), Se(VI), Sb(III), Sb(V), Te(IV), Te(VI), Hg(II), Tl(I) and Bi(III) by S. brevicaulis was quantified by analysing the amount of elements in biomass of the fungus using ICP AAS. The highest amounts of bioaccumulated metal(loid)s were obtained as follows: Bi(III) > Te(IV) > Hg(II) > Se(IV) > Te(VI) > Sb(III) at different initial contents, with Bi(III) accumulation approximately 87%. The highest percentages of volatilization were found using Hg(II) (50%) and Se(IV) (46·5%); it was also demonstrated with all studied elements. This proved the biovolatilization ability of microscopic fungi under aerobic conditions. The highest removed amount was observed using Hg(II) (95·30%), and more than 80% of Se(IV), Te(IV), Bi(III) and Hg(II) was removed by bioaccumulation and biovolatilization, which implies the possibilities of use of these processes for bioremediations. There were reported significant differences between bioaccumulation and biovolatilization of almost all applied metal(loid)s if valence is mentioned. SIGNIFICANCE AND IMPACT OF THE STUDY Microbial accumulation and volatilization are natural processes involved in biogeochemical cycles of elements. Despite their impact on mobility, bioavailability and toxicity of various metal(loid)s, only few papers deal with these processes under aerobic conditions with microscopic fungi. Thus, the proving of ability of microscopic fungus Scopulariopsis brevicaulis to accumulate and transform metals and metalloids by methylation or alkylation and quantification of these processes were demonstrated. The results can provide basic information on natural elements cycling and background for more specific studies focusing, for example, on application of these processes in mitigation of metal(loid) contamination.
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Affiliation(s)
- K Boriová
- Faculty of Natural Sciences, Institute of Laboratory Research on Geomaterials, Comenius University in Bratislava, Bratislava, Slovakia
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Anan Y, Yoshida M, Hasegawa S, Katai R, Tokumoto M, Ouerdane L, Łobiński R, Ogra Y. Speciation and identification of tellurium-containing metabolites in garlic, Allium sativum. Metallomics 2014; 5:1215-24. [PMID: 23925402 DOI: 10.1039/c3mt00108c] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Tellurium (Te) is a widely used metalloid in industry because of its unique chemical and physical properties. However, information about the biological and toxicological activities of Te in plants and animals is limited. Although Te is expected to be metabolized in organisms via the same pathway as sulfur and selenium (Se), no precise metabolic pathways are known in organisms, particularly in plants. To reveal the metabolic pathway of Te in plants, garlic, a well-known Se accumulator, was chosen as the model plant. Garlic was hydroponically cultivated and exposed to sodium tellurate, and Te-containing metabolites in the water extract of garlic leaves were identified using HPLC coupled with inductively coupled plasma mass spectrometry (ICP-MS) or electrospray tandem mass spectrometry (ESI-MS-MS). At least three Te-containing metabolites were detected using HPLC-ICP-MS, and two of them were subjected to HPLC-ESI-MS-MS for identification. The MS spectra obtained by ESI-MS-MS indicated that the metabolite was Te-methyltellurocysteine oxide (MeTeCysO). Then, MeTeCysO was chemically synthesized and its chromatographic behavior matched with that of the Te-containing metabolite in garlic. The other was assigned as cysteine S-methyltellurosulfide. These results suggest that garlic can assimilate tellurate, an inorganic Te compound, and tellurate is transformed into a Te-containing amino acid, the so-called telluroamino acid. This is the first report addressing that telluroamino acid is de novo synthesized in a higher plant.
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Affiliation(s)
- Yasumi Anan
- Laboratory of Chemical Toxicology and Environmental Health, Showa Pharmaceutical University, 3-3165 Higashi-Tamagawagakuen, Machida, Tokyo 194-8543, Japan
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Meinerz DF, Allebrandt J, Mariano DOC, Waczuk EP, Soares FA, Hassan W, Rocha JBT. Differential genotoxicity of diphenyl diselenide (PhSe)2 and diphenyl ditelluride (PhTe)2. PeerJ 2014; 2:e290. [PMID: 24711962 PMCID: PMC3970806 DOI: 10.7717/peerj.290] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2013] [Accepted: 02/04/2014] [Indexed: 11/20/2022] Open
Abstract
Organoselenium compounds have been pointed out as therapeutic agents. In contrast, the potential therapeutic aspects of tellurides have not yet been demonstrated. The present study evaluated the comparative toxicological effects of diphenyl diselenide (PhSe)2 and diphenyl ditelluride (PhTe)2 in mice after in vivo administration. Genotoxicity (as determined by comet assay) and mutagenicicity were used as end-points of toxicity. Subcutaneous administration of high doses of (PhSe)2 or (PhTe)2 (500 µmol/kg) caused distinct genotoxicity in mice. (PhSe)2 significantly decreased the DNA damage index after 48 and 96 h of its injection (p < 0.05). In contrast, (PhTe) caused a significant increase in DNA damage (p < 0.05) after 48 and 96 h of intoxication. (PhSe)2 did not cause mutagenicity but (PhTe)2 increased the micronuclei frequency, indicating its mutagenic potential. The present study demonstrated that acute in vivo exposure to ditelluride caused genotoxicity in mice, which may be associated with pro-oxidant effects of diphenyl ditelluride. In addition, the use of this compound and possibly other related tellurides must be carefully controlled.
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Affiliation(s)
- Daiane Francine Meinerz
- Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria , Santa Maria, RS, Brasil
| | - Josiane Allebrandt
- Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria , Santa Maria, RS, Brasil
| | - Douglas O C Mariano
- Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria , Santa Maria, RS, Brasil
| | - Emily P Waczuk
- Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria , Santa Maria, RS, Brasil
| | - Felix Antunes Soares
- Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria , Santa Maria, RS, Brasil
| | - Waseem Hassan
- Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria , Santa Maria, RS, Brasil
| | - João Batista T Rocha
- Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria , Santa Maria, RS, Brasil
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Cytotoxicity and genotoxicity evaluation of organochalcogens in human leucocytes: a comparative study between ebselen, diphenyl diselenide, and diphenyl ditelluride. BIOMED RESEARCH INTERNATIONAL 2013; 2013:537279. [PMID: 24350274 PMCID: PMC3856129 DOI: 10.1155/2013/537279] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/05/2013] [Accepted: 11/06/2013] [Indexed: 11/20/2022]
Abstract
Organochalcogens, particularly ebselen, have been used in experimental and clinical trials with borderline efficacy. (PhSe)2 and (PhTe)2 are the simplest of the diaryl dichalcogenides and share with ebselen pharmacological properties. In view of the concerns with the use of mammals in studies and the great number of new organochalcogens with potential pharmacological properties that have been synthesized, it becomes important to develop screening protocols to select compounds that are worth to be tested in vivo. This study investigated the possible use of isolated human white cells as a preliminary model to test organochalcogen toxicity. Human leucocytes were exposed to 5–50 μM of ebselen, (PhSe)2, or (PhTe)2. All compounds were cytotoxic (Trypan's Blue exclusion) at the highest concentration tested, and Ebselen was the most toxic. Ebselen and (PhSe)2 were genotoxic (Comet Assay) only at 50 μM, and (PhTe)2 at 5–50 μM. Here, the acute cytotoxicity did not correspond with in vivo toxicity of the compounds. But the genotoxicity was in the same order of the in vivo toxicity to mice. These results indicate that in vitro genotoxicity in white blood cells should be considered as an early step in the investigation of potential toxicity of organochalcogens.
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Molina-Quiroz RC, Loyola DE, Muñoz-Villagrán CM, Quatrini R, Vásquez CC, Pérez-Donoso JM. DNA, cell wall and general oxidative damage underlie the tellurite/cefotaxime synergistic effect in Escherichia coli. PLoS One 2013; 8:e79499. [PMID: 24260236 PMCID: PMC3832599 DOI: 10.1371/journal.pone.0079499] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Accepted: 09/21/2013] [Indexed: 01/25/2023] Open
Abstract
The constant emergence of antibiotic multi-resistant pathogens is a concern worldwide. An alternative for bacterial treatment using nM concentrations of tellurite was recently proposed to boost antibiotic-toxicity and a synergistic effect of tellurite/cefotaxime (CTX) was described. In this work, the molecular mechanism underlying this phenomenon is proposed. Global changes of the transcriptional profile of Escherichia coli exposed to tellurite/CTX were determined by DNA microarrays. Induction of a number of stress regulators (as SoxS), genes related to oxidative damage and membrane transporters was observed. Accordingly, increased tellurite adsorption/uptake and oxidative injuries to proteins and DNA were determined in cells exposed to the mixture of toxicants, suggesting that the tellurite-mediated CTX-potentiating effect is dependent, at least in part, on oxidative stress. Thus, the synergistic tellurite-mediated CTX-potentiating effect depends on increased tellurite uptake/adsorption which results in damage to proteins, DNA and probably other macromolecules. Our findings represent a contribution to the current knowledge of bacterial physiology under antibiotic stress and can be of great interest in the development of new antibiotic-potentiating strategies.
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Affiliation(s)
- Roberto C. Molina-Quiroz
- Laboratorio de Microbiología Molecular, Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile
| | - David E. Loyola
- Laboratorio de Microbiología Molecular, Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile
| | - Claudia M. Muñoz-Villagrán
- Laboratorio de Microbiología Molecular, Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile
| | - Raquel Quatrini
- Laboratorio de Ecofisiología Microbiana, Fundación Ciencia y Vida, Santiago, Chile
| | - Claudio C. Vásquez
- Laboratorio de Microbiología Molecular, Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile
- * E-mail: (CCV); (JMP)
| | - José M. Pérez-Donoso
- Microbiology and Bionanotechnology Research Group, Laboratorio de Bioquímica, Departamento de Bioquímica y Biología Molecular, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago, Chile
- Universidad Andres Bello, Facultad de Ciencias Biológicas, Center for Bioinformatics and Integrative Biology (CBIB), Bionanotechnology and Microbiology Lab, Santiago, Chile
- * E-mail: (CCV); (JMP)
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O'Brien CJ, Nixon ZS, Holohan AJ, Kunkel SR, Tellez JL, Doonan BJ, Coyle EE, Lavigne F, Kang LJ, Przeworski KC. Part I: the development of the catalytic Wittig reaction. Chemistry 2013; 19:15281-9. [PMID: 24115040 DOI: 10.1002/chem.201301444] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Indexed: 11/12/2022]
Abstract
We have developed the first catalytic (in phosphane) Wittig reaction (CWR). The utilization of an organosilane was pivotal for success as it allowed for the chemoselective reduction of a phosphane oxide. Protocol optimization evaluated the phosphane oxide precatalyst structure, loading, organosilane, temperature, solvent, and base. These studies demonstrated that to maintain viable catalytic performance it was necessary to employ cyclic phosphane oxide precatalysts of type 1. Initial substrate studies utilized sodium carbonate as a base, and further experimentation identified N,N-diisopropylethylamine (DIPEA) as a soluble alternative. The use of DIPEA improved the ease of use, broadened the substrate scope, and decreased the precatalyst loading. The optimized protocols were compatible with alkyl, aryl, and heterocyclic (furyl, indolyl, pyridyl, pyrrolyl, and thienyl) aldehydes to produce both di- and trisubstituted olefins in moderate-to-high yields (60-96%) by using a precatalyst loading of 4-10 mol%. Kinetic E/Z selectivity was generally 66:34; complete E selectivity for disubstituted α,β-unsaturated products was achieved through a phosphane-mediated isomerization event. The CWR was applied to the synthesis of 54, a known precursor to the anti-Alzheimer drug donepezil hydrochloride, on a multigram scale (12.2 g, 74% yield). In addition, to our knowledge, the described CWR is the only transition-/heavy-metal-free catalytic olefination process, excluding proton-catalyzed elimination reactions.
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Affiliation(s)
- Christopher J O'Brien
- School of Chemical Sciences, Dublin City University, Glasnevin, Dublin 9 (Ireland) http://webpages.dcu.ie/∼obrienc/OBrien_Group/Home.html.
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Prauchner CA, de Souza Prestes A, Nogueira CW, Rocha JBT. Effects of diphenyl diselenide and diphenyl ditellurite on chicken embryo development. Toxicol Mech Methods 2013; 23:660-4. [DOI: 10.3109/15376516.2013.834015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Liu N, Mu Y, Chen Y, Sun H, Han S, Wang M, Wang H, Li Y, Xu Q, Huang P, Sun Z. Degradation of aqueous synthesized CdTe/ZnS quantum dots in mice: differential blood kinetics and biodistribution of cadmium and tellurium. Part Fibre Toxicol 2013; 10:37. [PMID: 23915017 PMCID: PMC3750282 DOI: 10.1186/1743-8977-10-37] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2013] [Accepted: 08/02/2013] [Indexed: 11/16/2022] Open
Abstract
Background Quantum dots (QDs) have been used as novel fluorescent nanoprobes for various bioapplications. The degradation of QDs, and consequent release of free cadmium ions, have been suggested to be the causes of their overall toxicity. However, in contrast to sufficient investigations regarding the biological fate of QDs, a paucity of studies have reported their chemical fate in vivo. Therefore, the overall aim of our study was to understand the chemical fate of QDs in vivo and explore analytical techniques or methods that could be used to define the chemical fate of QDs in vivo. Methods Male ICR mice were administered a single intravenous dose (0.2 μmol/kg) of aqueous synthesized CdTe/ZnS aqQDs. Inductively coupled plasma-mass spectrometry (ICP-MS) was used to simultaneously measure the concentrations of cadmium (Cd) and tellurium (Te) in the blood and tissues over the course of a 28 day period. We compared the blood kinetic parameters and biodistributions of Cd and Te, and used the molar ratio of Cd:Te as a marker for QDs degradation. Results Cd and Te display different blood kinetics and biodistribution profiles. The Cd:Te ratio in the blood did not vary significantly within the first hour compared with intact CdTe/ZnS aqQDs. The Cd:Te ratio decreased gradually over time from the 6 h time point on. Cd accumulated in the liver, kidneys, and spleen. Te was distributed primarily to the kidneys. Sharp time-dependent increases in the Cd:Te ratio were found in liver tissues. Conclusions QDs can undergo degradation in vivo. In vitro, QDs are chemically stable and do not elicit the same biological responses or consequences as they do in vivo. Our methods might provide valuable information regarding the degradation of QDs in vivo and may enable the design and development of QDs for biological and biomedical applications.
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