1
|
Zhao Z, Liu M, Zhou K, Gong H, Shen Y, Bao Z, Yang Q, Ren Q, Zhang Z. Zr-Based Metal-Organic Frameworks with Phosphoric Acids for the Photo-Oxidation of Sulfides. Int J Mol Sci 2022; 23:ijms232416121. [PMID: 36555762 PMCID: PMC9784696 DOI: 10.3390/ijms232416121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Revised: 12/13/2022] [Accepted: 12/15/2022] [Indexed: 12/23/2022] Open
Abstract
Heterogeneous Brønsted acidic catalysts such as phosphoric acids are the conventional activators for organic transformations. However, the photocatalytic performance of these catalysts is still rarely explored. Herein, a novel Zr-based metal-organic framework Zr-MOF-P with phosphoric acids as a heterogeneous photocatalyst has been fabricated, which shows high selectivity and reactivity towards the photo-oxidation of sulfides under white light illumination. A mechanism study indicates that the selective oxygenation of sulfides occurs with triplet oxygen rather than common reactive oxygen species (ROS). When Zr-MOF-P is irradiated, the hydroxyl group of phosphoric acid is converted into oxygen radical, which takes an electron from the sulfides, and then the activated substrates react with the triplet oxygen to form sulfoxides, avoiding the destruction of the catalysts and endowing the reaction with high substrate compatibility and fine recyclability.
Collapse
Affiliation(s)
- Zhenghua Zhao
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310058, China
- Institute of Zhejiang University—Quzhou, Quzhou 324000, China
| | - Mingjie Liu
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310058, China
- Institute of Zhejiang University—Quzhou, Quzhou 324000, China
| | - Kai Zhou
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310058, China
- Institute of Zhejiang University—Quzhou, Quzhou 324000, China
| | - Hantao Gong
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310058, China
- Institute of Zhejiang University—Quzhou, Quzhou 324000, China
| | - Yajing Shen
- Institute of Zhejiang University—Quzhou, Quzhou 324000, China
| | - Zongbi Bao
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310058, China
- Institute of Zhejiang University—Quzhou, Quzhou 324000, China
| | - Qiwei Yang
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310058, China
- Institute of Zhejiang University—Quzhou, Quzhou 324000, China
| | - Qilong Ren
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310058, China
- Institute of Zhejiang University—Quzhou, Quzhou 324000, China
| | - Zhiguo Zhang
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310058, China
- Institute of Zhejiang University—Quzhou, Quzhou 324000, China
- Correspondence:
| |
Collapse
|
2
|
Liu Y, Zhou S, Xiang D, Ju L, Shen D, Wang X, Wang Y. Friend or Foe? The Roles of Antioxidants in Acute Lung Injury. Antioxidants (Basel) 2021; 10:1956. [PMID: 34943059 DOI: 10.3390/antiox10121956] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 11/22/2021] [Accepted: 11/23/2021] [Indexed: 12/18/2022] Open
Abstract
Acute lung injury (ALI) is an acute hypoxic respiratory insufficiency caused by various intra- and extra-pulmonary injury factors. The oxidative stress caused by excessive reactive oxygen species (ROS) produced in the lungs plays an important role in the pathogenesis of ALI. ROS is a "double-edged sword", which is widely involved in signal transduction and the life process of cells at a physiological concentration. However, excessive ROS can cause mitochondrial oxidative stress, leading to the occurrence of various diseases. It is well-known that antioxidants can alleviate ALI by scavenging ROS. Nevertheless, more and more studies found that antioxidants have no significant effect on severe organ injury, and may even aggravate organ injury and reduce the survival rate of patients. Our study introduces the application of antioxidants in ALI, and explore the mechanisms of antioxidants failure in various diseases including it.
Collapse
|
3
|
Zhang Q, Wu C, Fan Y, Xu T, Meng Q, Wang S, Liu Q, Yao C, Jiang T. Nucleic acid-targeted pathogen reduction technique in red blood cells by UV-generated oxygen radicals for optimising recipient safety. Transfus Med 2019; 30:51-60. [PMID: 31823441 DOI: 10.1111/tme.12654] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 10/17/2019] [Accepted: 11/25/2019] [Indexed: 01/20/2023]
Abstract
OBJECTIVES A novel pathogen reduction technique based on vacuum ultraviolet (VUV) irradiation was developed to reduce pathogen numbers in red blood cell (RBC) components. BACKGROUND Contaminated blood components pose a great risk of infection in blood recipients. The continuous development of blood screening techniques and pathogen inactivating systems has significantly reduced this risk, but many limitations remain. METHODS Escherichia coli and Bacillus cereus, and bacteriophage (BP) and Lentivirus (LV) were spiked into suspended red blood cells (sRBCs) or plasma. VUV light with maximum emission at 185 nm and an average dosage of 164 μW/cm2 was placed 5 cm above the targeted products to reduce the pathogen numbers. RESULTS Treatment for 5 minutes was effective; 3 and 10 log reductions of E coli counts were observed in sRBCs and plasma, and 2 and 3 log reductions of B cereus counts were observed in sRBCs and plasma, respectively. The BP titre was reduced by two and five log points in sRBCs and plasma, respectively; the LV titre was reduced by at least three log points in both sRBCs and plasma. VUV-based irradiation of RBCs does not cause significant structural and functional harmful effects. This novel strategy provides moderate photonic energy to generate oxygen radicals from H2 O and O2 and to selectively decrease DNA integrity of the potential pathogens. CONCLUSION The VUV-based pathogen reduction technique is a simple and fast procedure with high pathogen reduction efficacy, low toxicity and limited adverse effects on cellular blood products.
Collapse
Affiliation(s)
- Qiang Zhang
- Health Management Center, Chongqing General Hospital, Chongqing, China.,Department of Blood Transfusion, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Chunxi Wu
- Department of Blood Transfusion, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Yahan Fan
- Department of Blood Transfusion, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Ting Xu
- Department of Blood Transfusion, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Qiang Meng
- Department of Blood Transfusion, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Shichun Wang
- Department of Blood Transfusion, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Qi Liu
- Department of Blood Transfusion, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Chunyan Yao
- Department of Blood Transfusion, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Tianlun Jiang
- Department of Blood Transfusion, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| |
Collapse
|
4
|
Vimercati C, Qanud K, Mitacchione G, Sosnowska D, Ungvari Z, Sarnari R, Mania D, Patel N, Hintze TH, Gupte SA, Stanley WC, Recchia FA. Beneficial effects of acute inhibition of the oxidative pentose phosphate pathway in the failing heart. Am J Physiol Heart Circ Physiol 2014; 306:H709-17. [PMID: 24414069 DOI: 10.1152/ajpheart.00783.2013] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
In vitro studies suggested that glucose metabolism through the oxidative pentose phosphate pathway (oxPPP) can paradoxically feed superoxide-generating enzymes in failing hearts. We therefore tested the hypothesis that acute inhibition of the oxPPP reduces oxidative stress and enhances function and metabolism of the failing heart, in vivo. In 10 chronically instrumented dogs, congestive heart failure (HF) was induced by high-frequency cardiac pacing. Myocardial glucose consumption was enhanced by raising arterial glycemia to levels mimicking postprandial peaks, before and after intravenous administration of the oxPPP inhibitor 6-aminonicotinamide (80 mg/kg). Myocardial energy substrate metabolism was measured with radiolabeled glucose and oleic acid, and cardiac 8-isoprostane output was used as an index of oxidative stress. A group of five chronically instrumented, normal dogs served as control. In HF, raising glycemic levels from ∼ 80 to ∼ 170 mg/dL increased cardiac isoprostane output by approximately twofold, whereas oxPPP inhibition normalized oxidative stress and enhanced cardiac oxygen consumption, glucose oxidation, and stroke work. In normal hearts glucose infusion did not induce significant changes in cardiac oxidative stress. Myocardial tissue concentration of 6P-gluconate, an intermediate metabolite of the oxPPP, was significantly reduced by ∼ 50% in treated versus nontreated failing hearts, supporting the inhibitory effect of 6-aminonicotinamide. Our study indicates an important contribution of the oxPPP activity to cardiac oxidative stress in HF, which is particularly pronounced during common physiological changes such as postprandial glycemic peaks.
Collapse
Affiliation(s)
- Claudio Vimercati
- Department of Physiology, New York Medical College, Valhalla, New York
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
5
|
Johnson GE, Tyo EC, Castleman AW. Cluster reactivity experiments: employing mass spectrometry to investigate the molecular level details of catalytic oxidation reactions. Proc Natl Acad Sci U S A 2008; 105:18108-13. [PMID: 18687883 PMCID: PMC2587532 DOI: 10.1073/pnas.0801539105] [Citation(s) in RCA: 110] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2008] [Indexed: 11/18/2022] Open
Abstract
Mass spectrometry is the most widely used tool in the study of the properties and reactivity of clusters in the gas phase. In this article, we demonstrate its use in investigating the molecular-level details of oxidation reactions occurring on the surfaces of heterogeneous catalysts via cluster reactivity experiments. Guided ion beam mass spectrometry (GIB-MS) employing a quadrupole-octopole-quadrupole (Q-O-Q) configuration enables mass-selected cluster ions to be reacted with various chemicals, providing insight into the effect of size, stoichiometry, and ionic charge state on the reactivity of catalyst materials. For positively charged tungsten oxide clusters, it is shown that species having the same stoichiometry as the bulk, WO(3)(+), W(2)O(6)(+), and W(3)O(9)(+), exhibit enhanced activity and selectivity for the transfer of a single oxygen atom to propylene (C(3)H(6)), suggesting the formation of propylene oxide (C(3)H(6)O), an important monomer used, for example, in the industrial production of plastics. Furthermore, the same stoichiometric clusters are demonstrated to be active for the oxidation of CO to CO(2), a reaction of significance to environmental pollution abatement. The findings reported herein suggest that the enhanced oxidation reactivity of these stoichiometric clusters may be due to the presence of radical oxygen centers (W-O) with elongated metal-oxygen bonds. The unique insights gained into bulk-phase oxidation catalysis through the application of mass spectrometry to cluster reactivity experiments are discussed.
Collapse
Affiliation(s)
- Grant E. Johnson
- Departments of Chemistry and Physics, Pennsylvania State University, University Park, PA 16802
| | - Eric C. Tyo
- Departments of Chemistry and Physics, Pennsylvania State University, University Park, PA 16802
| | - A. W. Castleman
- Departments of Chemistry and Physics, Pennsylvania State University, University Park, PA 16802
| |
Collapse
|
6
|
Nishimura S. 8-Hydroxyguanine: From its discovery in 1983 to the present status. Proc Jpn Acad Ser B Phys Biol Sci 2006; 82:127-141. [PMID: 25792776 PMCID: PMC4323045 DOI: 10.2183/pjab.82.127] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2006] [Accepted: 02/13/2006] [Indexed: 06/04/2023]
Abstract
8-Hydroxyguanine (8-OH-G) was discovered in 1983 in our laboratory at the National Cancer Center Research Institute, Tokyo. Since it could be formed in DNA not only in vitro but also in vivo by oxygen radical forming agents, we immediately hypothesized the importance of this discovery in connection with its biological consequence. Further intensive efforts by us from 1983 to 1990 confirmed that 8-OH-G is a highly significant oxidated DNA lesion involved in mutation and/or carcinogenesis in mammals, including humans. With the subsequent entry of many investigators to this research field the number of publications on 8-OH-G increased exponentially, reaching more than several thousands by the end of 2005. In this article, a summary is given of the important works carried out in the early days, and further notable contributions by many investigators are reviewed, focusing on 8-OH-G in the mammalian system. A special emphasis is given to research on knockout mice that are deficient in genes involved in the repair systems of the 8-OH-G lesion. Lastly, our own recent work is summarized involving a one-year carcinogenesis study of Ogg1 (the gene for 8-OH-G specific glycosylase/AP lyase) knockout mice that have been exposed to oxidative stress.
Collapse
Affiliation(s)
- Susumu Nishimura
- University of Tsukuba, Tennodai, 1-1-1, Tsukuba, Ibaraki 305-8577, Japan()
| |
Collapse
|
7
|
Abstract
Chronic inflammation leading to pulmonary fibrosis develops in response to environmental pollutants, radiotherapy, or certain cancer chemotherapeutic agents. We speculated that lung injury might be mediated by p53, a proapoptotic transcription factor widely implicated in the response of cells to DNA damage. Intratracheal administration of bleomycin led to caspase-mediated DNA fragmentation characteristic of apoptosis. The effects of bleomycin were associated with translocation of p53 from the cytosol to the nucleus only in alveolar macrophages that had been exposed to the drug in vivo, suggesting that the lung microenvironment regulated p53 activation. Experiments with a thiol antioxidant (N-acetylcysteine) in vivo and nitric oxide (NO) donors in vitro confirmed that reactive oxygen species were required for p53 activation. A specific role for NO was demonstrated in experiments with inducible nitric oxide synthase (iNOS)(-/)- macrophages, which failed to demonstrate nuclear p53 localization after in vivo bleomycin exposure. Strikingly, rates of bleomycin-induced apoptosis were at least twofold higher in p53(-/)- C57BL/6 mice compared with heterozygous or wild-type littermates. Similarly, levels of apoptosis were also twofold higher in the lungs of iNOS(-/)- mice than were observed in wild-type controls. Consistent with a role for apoptosis in chronic lung injury, levels of bleomycin-induced inflammation were substantially higher in iNOS(-/)- and p53(-/)- mice compared with wild-type controls. Together, our results demonstrate that iNOS and p53 mediate a novel apoptosis-suppressing pathway in the lung.
Collapse
Affiliation(s)
- D W Davis
- Program in Toxicology, University of Texas-Houston Graduate School of Biomedical Sciences, Houston, Texas 77030, USA
| | | | | | | |
Collapse
|
8
|
Yamamoto F, Kasai H, Togashi Y, Takeichi N, Hori T, Nishimura S. Elevated level of 8-hydroxydeoxyguanosine in DNA of liver, kidneys, and brain of Long-Evans Cinnamon rats. Jpn J Cancer Res 1993; 84:508-11. [PMID: 8320167 PMCID: PMC5919176 DOI: 10.1111/j.1349-7006.1993.tb00168.x] [Citation(s) in RCA: 64] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Long-Evans Cinnamon (LEC) rats, a mutant strain originating from Long-Evans rats, spontaneously develop hereditary hepatitis followed by hepatocellular carcinoma. The hepatic disorder in LEC rats is associated with their abnormal copper metabolism; metal-catalyzed reactions often give rise to oxygen radicals, which may be related to the carcinogenesis. By means of high-pressure liquid chromatography with electrochemical detection, cellular DNA damage caused by oxygen radicals can be assessed in terms of the amount of 8-hydroxydeoxyguanosine (oh8dG). We assayed the amount of oh8dG in DNA of liver, kidneys, and brain of LEC and Long-Evans Agouti (LEA) control rats in seven groups (n = 3 to 6) aged from 5 weeks to 24 months. Control rats, a healthy sibling line, were age-matched. The amount of oh8dG was correlated with the severity of the age-related clinical symptoms in LEC rats. The amount was higher in LEC rats than in the controls, especially in the liver at the acute stage of hepatitis. These findings suggest that oxygen radicals may be important in the carcinogenesis that occurs in LEC rats.
Collapse
Affiliation(s)
- F Yamamoto
- Biology Division, National Cancer Center Research Institute, Tokyo
| | | | | | | | | | | |
Collapse
|
9
|
Hashimoto S, Seyama Y, Yokokura T, Mutai M. Cytotoxic factor production by Kupffer cells elicited with Lactobacillus casei and Corynebacterium parvum. Cancer Immunol Immunother 1985; 20:117-21. [PMID: 3930066 PMCID: PMC11038999 DOI: 10.1007/bf00205677] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/1984] [Accepted: 05/09/1985] [Indexed: 01/08/2023]
Abstract
The ability of Kupffer cells, spleen macrophages, pulmonary macrophages, and peritoneal macrophages (PM) to produce cytotoxic factor (CTF) was investigated in vitro. The production of CTF by Kupffer cells elicited with Corynebacterium parvum (CP) or Lactobacillus casei YIT9018 (LC9018) was higher than that of spleen, pulmonary macrophages, or PM. In addition, oxygen radical (OR) production by Kupffer cells or PM was measured. The production of OR by Kupffer cells or PM was significantly augmented by i.v. or i.p. injection of LC9018 or CP. No significant correlation was observed between the increase in OR production by Kupffer cells or PM and CTF production by Kupffer cells or PM elicited with either organism. It was suggested that activated Kupffer cells may be one important source of CTF production in serum and that the CTF-producing macrophages may be different from the OR-producing macrophages.
Collapse
|