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Li B, Jiang K, Song T, Yan M, Li N, Yang Z, Zhu C, Li H. Hydroxyl radicals dominated the reduction of antibiotic resistance genes by inactivating Gram-negative bacteria during soil electrokinetic treatment. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 370:122542. [PMID: 39312876 DOI: 10.1016/j.jenvman.2024.122542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2024] [Revised: 09/06/2024] [Accepted: 09/16/2024] [Indexed: 09/25/2024]
Abstract
Antibiotic-resistant bacteria (ARB) and antibiotic resistance genes (ARGs) are emerging contaminants that widely exist in the environment. Effective reduction of ARB and ARGs from soil and water could be achieved by electrokinetic remediation (EKR) technology. In water, hydroxyl radicals (·OH) are proved to play a major role in the EKR process; while the reduction mechanism of ARB and ARGs is still unclear in soil. In this study, different concentrations of hydroxyl radical scavengers (salicylic acid) were added to the EKR system to explore the possible role of ·OH in the reduction of ARB and ARGs. The results showed that generally, ·OH played a more vital role in the reduction of ARB (65.24-72.46%) compared to the reduction of total cultivable bacteria (57.50%). And ·OH contributed to a higher reduction of sul genes (60.94%) compared to tet genes (47.71%) and integrons (36.02%). It was found that the abundance of Gram-negative bacteria (Chloroflexi, Acidobacteria and norank_c_Acidobacteria) was significantly reduced, and the correlation between norank_f_Gemmatimonadaceae and sul1 was weakened in the presence of ·OH. Correlation analysis indicated that the abundance of ARGs (especially sul1) was closely related to the Gram-negative bacteria (Proteobacteria, Acidobacteria, and Gemmatimonadetes) in the soil EKR treatment. Moreover, changes in bacterial community structure affected the abundance of ARB and ARGs indirectly. Overall, this study revealed the reduction mechanism of ARB and ARGs by ·OH in the soil EKR system for the first time. These findings provide valuable support for soil remediation efforts focusing on controlling antibiotic resistance.
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Affiliation(s)
- Binxu Li
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Kaiyang Jiang
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Tingting Song
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, China; College of Engineering, Jilin Normal University, Siping, Jilin, 136000, China
| | - Mengmeng Yan
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Na Li
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Zhenzhen Yang
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Changxiong Zhu
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Hongna Li
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, China; Ningxia Key Laboratory for the Development and Application of Microbial Resources in Extreme Environments, North Minzu University, Yinchuan, Ningxia Hui Autonomous Region, 750021, China.
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Sasak K, Nowak M, Wlodarczyk A, Sarniak A, Tryniszewski W, Nowak D. Light Emission from Fe 2+-EGTA-H 2O 2 System Depends on the pH of the Reaction Milieu within the Range That May Occur in Cells of the Human Body. Molecules 2024; 29:4014. [PMID: 39274863 PMCID: PMC11396423 DOI: 10.3390/molecules29174014] [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: 07/05/2024] [Revised: 08/16/2024] [Accepted: 08/20/2024] [Indexed: 09/16/2024] Open
Abstract
A Fe2+-EGTA(ethylene glycol-bis (β-aminoethyl ether)-N,N,N',N'-tetraacetic acid)-H2O2 system emits photons, and quenching this chemiluminescence can be used for determination of anti-hydroxyl radical (•OH) activity of various compounds. The generation of •OH and light emission due to oxidative damage to EGTA may depend on the buffer and pH of the reaction milieu. In this study, we evaluated the effect of pH from 6.0 to 7.4 (that may occur in human cells) stabilized with 10 mM phosphate buffer (main intracellular buffer) on a chemiluminescence signal and the ratio of this signal to noise (light emission from medium alone). The highest signal (4698 ± 583 RLU) and signal-to-noise ratio (9.7 ± 1.5) were noted for pH 6.6. Lower and higher pH caused suppression of these variables to 2696 ± 292 RLU, 4.0 ± 0.8 at pH 6.2 and to 3946 ± 558 RLU, 5.0 ± 1.5 at pH 7.4, respectively. The following processes may explain these observations: enhancement and inhibition of •OH production in lower and higher pH; formation of insoluble Fe(OH)3 at neutral and alkaline environments; augmentation of •OH production by phosphates at weakly acidic and neutral environments; and decreased regeneration of Fe2+-EGTA in an acidic environment. Fe2+-EGTA-H2O2 system in 10 mM phosphate buffer pH 6.6 seems optimal for the determination of anti-•OH activity.
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Affiliation(s)
- Krzysztof Sasak
- Department of Medical Imaging Techniques, Medical University of Lodz, Lindleya 6, 90-131 Lodz, Poland
| | - Michal Nowak
- Radiation Protection, University Hospital No. 2, Medical University of Lodz, Zeromskiego 113, 90-549 Lodz, Poland
| | - Anna Wlodarczyk
- Department of Sleep Medicine and Metabolic Disorders, Medical University of Lodz, Mazowiecka 6/8, 92-215 Lodz, Poland
| | - Agata Sarniak
- Department of Clinical Physiology, Medical University of Lodz, Mazowiecka 6/8, 92-215 Lodz, Poland
| | - Wieslaw Tryniszewski
- Department of Radiological and Isotopic Diagnostics and Therapy, Medical University of Lodz, Zeromskiego 113, 90-549 Lodz, Poland
| | - Dariusz Nowak
- Department of Clinical Physiology, Medical University of Lodz, Mazowiecka 6/8, 92-215 Lodz, Poland
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Erkovich AV, Korotkova EI, Dorozhko EV, Plotnikov EV, Semin VO, Chernova AP, Barek J, Solomonenko AN, Aseeva NV. A novel impedimetric sensor based on N-acetyl-L-cysteine for the determination of hydroxyl radicals in cell cultures in vitro. Talanta 2024; 270:125600. [PMID: 38159349 DOI: 10.1016/j.talanta.2023.125600] [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: 10/16/2023] [Revised: 12/20/2023] [Accepted: 12/23/2023] [Indexed: 01/03/2024]
Abstract
We report a novel impedimetric sensor based on a graphite electrode impregnated with polyethylene and paraffin under vacuum (IGE) modified with electrochemically deposited gold and a self-assembled monolayer of N-acetyl-L-cysteine (NAC/Au/IGE) for selective and sensitive determination of extracellular hydroxyl radicals (OH•) generated by living cells. The application of a sulphur-containing molecule oxidized by OH• predicts the high selectivity of the sensor, and the utilization of the non-faradaic impedance spectroscopy for recording an analytical response makes it possible to achieve superior sensitivity with a detection limit of 0.01 nM and a linear dynamic range of 0.08-8 nM. Meanwhile, NAC/Au/IGE demonstrated a strong potential of detecting OH• generated by biological objects via successful determination of extracellular hydroxyl radicals generated by normal fibroblast cells and prostate carcinoma cells.
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Affiliation(s)
- A V Erkovich
- Division for Chemical Engineering, School of Earth Sciences and Engineering, National Research Tomsk Polytechnic University, Lenin Avenue 30, 634050, Tomsk, Russia.
| | - E I Korotkova
- Division for Chemical Engineering, School of Earth Sciences and Engineering, National Research Tomsk Polytechnic University, Lenin Avenue 30, 634050, Tomsk, Russia
| | - E V Dorozhko
- Division for Chemical Engineering, School of Earth Sciences and Engineering, National Research Tomsk Polytechnic University, Lenin Avenue 30, 634050, Tomsk, Russia
| | - E V Plotnikov
- Research School of Chemistry and Applied Biomedical Sciences, National Research Tomsk Polytechnic University, 634050, Tomsk, Russia
| | - V O Semin
- Institute of Strength Physics and Materials Science of Siberian Branch of Russian Academy of Sciences, Pr. Akademicheskii 2/4, 634055, Tomsk, Russia
| | - A P Chernova
- Division for Chemical Engineering, School of Earth Sciences and Engineering, National Research Tomsk Polytechnic University, Lenin Avenue 30, 634050, Tomsk, Russia
| | - J Barek
- Charles University, Faculty of Science, Department of Analytical Chemistry, UNESCO Laboratory of Environmental Electrochemistry, Hlavova 8/2030, CZ 128 43 Prague 2, Czech Republic
| | - A N Solomonenko
- Division for Chemical Engineering, School of Earth Sciences and Engineering, National Research Tomsk Polytechnic University, Lenin Avenue 30, 634050, Tomsk, Russia
| | - N V Aseeva
- Division for Chemical Engineering, School of Earth Sciences and Engineering, National Research Tomsk Polytechnic University, Lenin Avenue 30, 634050, Tomsk, Russia
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4
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Chen Y, Ji X, Tao L, Ma C, Nie J, Lu C, Yang G, Wang E, Liu H, Wang F, Ren J. Rational design of a ratiometric fluorescent nanoprobe for real-time imaging of hydroxyl radical and its therapeutic evaluation of diabetes. Biosens Bioelectron 2024; 246:115868. [PMID: 38029709 DOI: 10.1016/j.bios.2023.115868] [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: 09/09/2023] [Revised: 11/02/2023] [Accepted: 11/20/2023] [Indexed: 12/01/2023]
Abstract
Hydroxyl radical (•OH), one of the most reactive and deleterious substances in organisms, belongs to a class of reactive oxygen species (ROS), and it has been verified to play an essential role in numerous pathophysiological scenarios. However, due to its extremely high reactivity and short lifetime, the development of a reliable and robust method for tracking endogenous •OH remains an ongoing challenge. In this work, we presented the first ratiometric fluorescent nanoprobe NanoDCQ-3 for •OH sensing based on oxidative C-H abstraction of dihydroquinoline to quinoline. The study mainly focused on how to modulate the electronic effects to achieve an ideal ratiometric detection of •OH, as well as solving the inherent problem of hydrophilicity of the probe, so that it was more conducive to monitoring •OH in living organisms. The screened-out probe NanoDCQ-3 exhibited an exceptional ratiometric sensing capability, better biocompatibility, good cellular uptake, and appropriate in vivo retention, which has been reliably used for detecting exogenous •OH concentration fluctuation in living cells and zebrafish models. More importantly, NanoDCQ-3 facilitated visualization of •OH and evaluation of drug treatment efficacy in diabetic mice. These findings afforded a promising strategy for designing ratiometric fluorescent probes for •OH. NanoDCQ-3 emerged as a valuable tool for the detection of •OH in vivo and held potential for drug screening for inflammation-related diseases.
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Affiliation(s)
- Yiyu Chen
- Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry & Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei University, Wuhan, 430062, China
| | - Xueying Ji
- Department of Ophthalmology, The First Affiliated Hospital of Hainan Medical University, Hainan Medical University, Haikou, 571199, China
| | - Linlin Tao
- Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry & Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei University, Wuhan, 430062, China
| | - Chao Ma
- Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry & Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei University, Wuhan, 430062, China
| | - Junqi Nie
- Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry & Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei University, Wuhan, 430062, China
| | - Cuifen Lu
- Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry & Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei University, Wuhan, 430062, China
| | - Guichun Yang
- Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry & Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei University, Wuhan, 430062, China
| | - Erfei Wang
- Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry & Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei University, Wuhan, 430062, China
| | - Heng Liu
- Department of Ophthalmology, The First Affiliated Hospital of Hainan Medical University, Hainan Medical University, Haikou, 571199, China.
| | - Feiyi Wang
- Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry & Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei University, Wuhan, 430062, China.
| | - Jun Ren
- Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry & Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei University, Wuhan, 430062, China.
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5
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Wang L, Wang L, Shi Y, Zhao B, Zhang Z, Ding G, Zhang H. Blue TiO 2 nanotube electrocatalytic membrane electrode for efficient electrochemical degradation of organic pollutants. CHEMOSPHERE 2022; 306:135628. [PMID: 35810871 DOI: 10.1016/j.chemosphere.2022.135628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 05/29/2022] [Accepted: 07/03/2022] [Indexed: 06/15/2023]
Abstract
In this study, a Ti3+-doped TiO2 porous membrane (Blue TiO2/Ti) was fabricated and employed for electrochemical degradation of organic pollutants in the single-pass flow-through mode. Characterizations including X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microcopy (SEM) and energy dispersive spectroscopy (EDS) verified that Ti3+-doped anatase TiO2 with nanotube structures was successfully prepared. Electrochemical analysis including linear sweep voltammetry (LSV), cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and electrochemical active surface area (ESA) revealed higher oxygen evolution potential (OEP, 2.23 V vs. Ag/AgCl), larger redox peak current, lower impedance and larger ESA (69 cm2/cm2) of Blue TiO2/Ti compared to the Ti and TiO2/Ti membranes. The effects of current density, flow rate and solution environment on the removal of methylene blue (MB) were investigated. The removal rates of various organic pollutants including sulfamethoxazole (SMX), methyl orange (MO), bisphenol A (BPA) and MB could reach 92.2%-99.5%. The quenching experiment proved that hydroxyl radicals (•OH) played the major role in the Blue TiO2/Ti based electrochemical system. Furthermore, the degradation pathways of two typical pollutants (SMX and MB) were proposed by analyzing the oxidation products with liquid chromatography-mass spectrometry (LC-MS) and gas chromatography-mass spectrometry (GC-MS), with the assistance of orbital-weighted Fukui index (fw0 and fw-) obtained through Density Functional Theory (DFT) calculations. Moreover, toxicity indexes of the oxidation products were obtained and compared to the parent SMX and MB using Toxicity Estimation Software Tool (TEST) software. Finally, the long-term operation performance of the Blue TiO2/Ti membrane was evaluated.
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Affiliation(s)
- Linlin Wang
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Environmental Science and Engineering, Tiangong University, Tianjin, 300387, China
| | - Liang Wang
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Environmental Science and Engineering, Tiangong University, Tianjin, 300387, China.
| | - Yawei Shi
- College of Environmental Science and Engineering, Dalian Maritime University, Dalian, 116026, China.
| | - Bin Zhao
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Environmental Science and Engineering, Tiangong University, Tianjin, 300387, China
| | - Zhaohui Zhang
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Environmental Science and Engineering, Tiangong University, Tianjin, 300387, China
| | - Guanghui Ding
- College of Environmental Science and Engineering, Dalian Maritime University, Dalian, 116026, China
| | - Hongwei Zhang
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Environmental Science and Engineering, Tiangong University, Tianjin, 300387, China
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Sun S, Zhang J, Sheng C, Zhong H. The removal of NO from flue gas by NaOH-catalyzed H 2O 2 system: Mechanism exploration and primary experiment. JOURNAL OF HAZARDOUS MATERIALS 2022; 440:129788. [PMID: 35988485 DOI: 10.1016/j.jhazmat.2022.129788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 07/19/2022] [Accepted: 08/14/2022] [Indexed: 06/15/2023]
Abstract
Currently, most advanced oxidation denitrification technologies require long flue gas residence time to obtain ideal NO removal efficiency. The NaOH-catalyzed H2O2 system proposed in this paper can obtain 98% NO removal efficiency under the condition of flue gas residence time of 3 s. The mechanism of NO removal and H2O2 decomposition to O2 were proposed. It was confirmed with ESR (Electron-spin-resonance), inhibitor experiments and UV-Vis spectrophotometer that the main group in the reaction process was·O2- radicals, which reacted with NO to form ONOO-, and ONOO- would be gradually transformed into NO3- and NO2- in the air. The effect of some primary factors on the NO removal efficiency and the percentage of H2O2 decomposition to O2 were also investigated. The increase of initial pH has a positive effect on NO removal, while the promotion of NO removal by increasing H2O2 concentration and reaction temperature is limited and the increase of NO has a negative effect on NO removal. Initial pH has a dual impact on the percentage of H2O2 decomposition to O2, H2O2 concentration and reaction temperature promote the decomposition of H2O2 to O2, while NO concentration has an inhibiting effect on it.
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Affiliation(s)
- Shujun Sun
- Department of Energy and Environment, Southeast University, Nanjing, 210096 Jiangsu, China
| | - Jun Zhang
- Department of Energy and Environment, Southeast University, Nanjing, 210096 Jiangsu, China.
| | - Changdong Sheng
- Department of Energy and Environment, Southeast University, Nanjing, 210096 Jiangsu, China
| | - Hui Zhong
- Department of Energy and Environment, Southeast University, Nanjing, 210096 Jiangsu, China
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7
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Akif FA, Mahmoud M, Prasad B, Richter P, Azizullah A, Qasim M, Anees M, Krüger M, Gastiger S, Burkovski A, Strauch SM, Lebert M. Polyethylenimine Increases Antibacterial Efficiency of Chlorophyllin. Antibiotics (Basel) 2022; 11:antibiotics11101371. [PMID: 36290029 PMCID: PMC9598908 DOI: 10.3390/antibiotics11101371] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 09/27/2022] [Accepted: 09/28/2022] [Indexed: 11/16/2022] Open
Abstract
Polyethylenimines (PEIs), a group of polycationic molecules, are known to impair the outer membrane of Gram-negative bacteria and exhibit antimicrobial activity. The outer membrane of Gram-negative strains hinders the uptake of photosensitizer chlorophyllin. In this study, we report chlorophyllin and branched PEI combinations’ activity against Escherichia coli strains DH5α and RB791, Salmonella enterica sv. Typhimurium LT2, and Bacillus subtilis 168. The minimal bactericidal concentration (MBC) was determined by plating cells treated with different concentrations of PEI and chlorophyllin on agar and monitoring their growth after 24 h. All tested combinations of PEI and chlorophyllin were lethal for S. enterica after 240 min of incubation in light, whereas PEI alone (<100 µg mL−1) was ineffective. In the darkness, complete inhibition was noted with a combination of ≥2.5 µg mL−1 chlorophyllin and 50 µg mL−1 PEI. If applied alone, PEI alone of ≥800 µg mL−1 of PEI was required to completely inactivate E. coli DH5α cells in light, whereas with ≥5 µg mL−1 chlorophyllin, only ≥100 µg mL−1 PEI was needed. No effect was detected in darkness with PEI alone. However, 1600 µg mL−1 PEI in combination with 2.5 µg mL−1 resulted in complete inactivation after 4 h dark incubation. PEI alone did not inhibit E. coli strain RB791, while cells were inactivated when treated with 10 µg mL−1 chlorophyllin in combination with ≥100 µg mL−1 (in light) or ≥800 µg mL−1 PEI (in darkness). Under illumination, B. subtilis was inactivated at all tested concentrations. In the darkness, 1 µg mL−1 chlorophyllin and 12.5 µg mL−1 PEI were lethal for B. subtilis. Overall, PEI can be used as an antimicrobial agent or potentiating agent for ameliorating the antimicrobial activity of chlorophyllin.
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Affiliation(s)
- Faheem Ahmad Akif
- Department of Microbiology, Kohat University of Science and Technology (KUST), Kohat 26000, Pakistan
- Gravitational Biology Group, Department of Biology, Cell Biology Division, Friedrich-Alexander-Universität, Erlangen-Nürnberg, 91058 Erlangen, Germany
| | - Mona Mahmoud
- Gravitational Biology Group, Department of Biology, Cell Biology Division, Friedrich-Alexander-Universität, Erlangen-Nürnberg, 91058 Erlangen, Germany
- Dairy Department (Microbiology Lab.), National Research Centre, Cairo 12622, Egypt
- Department of Biology, Microbiology Division, Friedrich-Alexander-Universität, Erlangen-Nürnberg, 91058 Erlangen, Germany
| | - Binod Prasad
- Gravitational Biology Group, Department of Biology, Cell Biology Division, Friedrich-Alexander-Universität, Erlangen-Nürnberg, 91058 Erlangen, Germany
| | - Peter Richter
- Gravitational Biology Group, Department of Biology, Cell Biology Division, Friedrich-Alexander-Universität, Erlangen-Nürnberg, 91058 Erlangen, Germany
- Correspondence: (P.R.); (M.Q.)
| | - Azizullah Azizullah
- Department of Botany, Kohat University of Science and Technology (KUST), Kohat 26000, Pakistan
| | - Muhammad Qasim
- Department of Microbiology, Kohat University of Science and Technology (KUST), Kohat 26000, Pakistan
- Correspondence: (P.R.); (M.Q.)
| | - Muhammad Anees
- Department of Microbiology, Kohat University of Science and Technology (KUST), Kohat 26000, Pakistan
| | - Marcus Krüger
- Environmental Cell Biology Group, Department of Microgravity and Translational Regenerative Medicine, Otto-von-Guericke University, 39106 Magdeburg, Germany
| | - Susanne Gastiger
- Department of Biology, Microbiology Division, Friedrich-Alexander-Universität, Erlangen-Nürnberg, 91058 Erlangen, Germany
| | - Andreas Burkovski
- Department of Biology, Microbiology Division, Friedrich-Alexander-Universität, Erlangen-Nürnberg, 91058 Erlangen, Germany
| | - Sebastian M. Strauch
- Postgraduate Program in Health and Environment, University of Joinville Region, Joinville 89219-710, SC, Brazil
| | - Michael Lebert
- Gravitational Biology Group, Department of Biology, Cell Biology Division, Friedrich-Alexander-Universität, Erlangen-Nürnberg, 91058 Erlangen, Germany
- Space Biology Unlimited S.A.S., 33000 Bordeaux, France
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Hernández-Valencia CG, Hernández-Valdepeña MA, Vázquez A, Cedeño-Caero L, Pedraza-Chaverri J, Sánchez-Sánchez R, Gimeno M. Enzymatic poly(gallic acid)-grafted α-l-lysine inhibits Staphylococcus aureus and Escherichia coli strains with no cytotoxicity for human cells. BIOMATERIALS ADVANCES 2022; 138:212960. [PMID: 35913230 DOI: 10.1016/j.bioadv.2022.212960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Revised: 05/11/2022] [Accepted: 05/24/2022] [Indexed: 06/15/2023]
Abstract
The α-l-Lysine (LL) grafting onto the enzymatic poly(gallic acid) (PGAL) produces a helicoidal brush-like antimicrobial polymer containing outer positive-charged moieties. Best results are found with ca. 16 mol% α-LL-grafting for the inhibition of gram-positive Staphylococcus aureus and gram-negative Escherichia coli strains. Membrane permeability, confocal and scanning electron microscopy studies suggest a pore-formation and translocation mechanisms by initial electrostatic interaction of positive charged polymer at the negatively charged bacterial membranes. The attained polymer displays high concentration of hemolysis (Hc) in erythrocytes, and no lymphocyte mitochondrial activity. Interestingly, PGAL-LL is not cytotoxic on human dermal fibroblast. The antioxidant activity after the LL hybridization is also demonstrated by DPPH, ORAC, FRAP and hydroxyl radical scavenging, which enhances the preservation of human cells in addition to antimicrobial for this polymer.
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Affiliation(s)
- Carmen G Hernández-Valencia
- Facultad de Química, Departamento de Alimentos y Biotecnología, Universidad Nacional Autónoma de México, Ciudad Universitaria, Ciudad de México 04510, Mexico
| | - Miguel A Hernández-Valdepeña
- Facultad de Química, Departamento de Alimentos y Biotecnología, Universidad Nacional Autónoma de México, Ciudad Universitaria, Ciudad de México 04510, Mexico
| | - Alfredo Vázquez
- Facultad de Química, Departamento de Química Orgánica, Universidad Nacional Autónoma de México, Ciudad Universitaria, Ciudad de México 04510, Mexico
| | - Luis Cedeño-Caero
- Facultad de Química, Departamento de Ingeniería Química, Universidad Nacional Autónoma de México, México D.F. 04510, Mexico
| | - José Pedraza-Chaverri
- Facultad de Química, Departamento de Biología, Universidad Nacional Autónoma de México, Ciudad Universitaria, Ciudad de México 04510, Mexico
| | - Roberto Sánchez-Sánchez
- Unidad de Ingeniería de Tejidos Terapia Celular y Medicina Regenerativa, Instituto Nacional de Rehabilitación "Luis Guillermo Ibarra Ibarra", Ciudad de México, Mexico; Escuela de Ingeniería y Ciencias, Departamento de Bioingeniería, Instituto Tecnológico de Monterrey, Puente 222, Col. Arboledas del Sur, C.P. 14380 Ciudad de Mexico, Mexico
| | - Miquel Gimeno
- Facultad de Química, Departamento de Alimentos y Biotecnología, Universidad Nacional Autónoma de México, Ciudad Universitaria, Ciudad de México 04510, Mexico.
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9
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Chen Y, Sun X, Fang L, Jiang X, Zhang X, Ge Z, Wang R, Wang C. Optimization of Ultrasound-Assisted Extraction of Polyphenols from Ilex latifolia Using Response Surface Methodology and Evaluation of Their Antioxidant Activity. Molecules 2022; 27:molecules27133999. [PMID: 35807245 PMCID: PMC9268308 DOI: 10.3390/molecules27133999] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 06/18/2022] [Accepted: 06/20/2022] [Indexed: 02/05/2023] Open
Abstract
The polyphenolic extract of Ilex latifolia (PEIL) exhibits a variety of biological activities. An evaluation of the parameters influencing the ultrasonic extraction process and the assessment of PEIL antioxidant activity are presented herein. Response surface methodology (RSM) was used to optimize the experimental conditions for the polyphenols ultrasonic-assisted extraction (UAE) from the leaves of Ilex latifolia. We identified the following optimal conditions of PEIL: ethanol concentration of 53%, extraction temperature of 60 °C, extraction time of 26 min and liquid−solid ratio of 60 mL/g. Using these parameters, the UAE had a yield of 35.77 ± 0.26 mg GAE/g, similar to the value we predicted using RSM (35.864 mg GAE/g). The antioxidant activity of PEIL was assessed in vitro, using various assays, as well as in vivo. We tested the effects of various doses of PEIL on D-galactose induced aging. Vitamin C (Vc) was used as positive control. After 21 days of administration, we measured superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) activities, malondialdehyde (MDA) levels in mouse serum and liver tissue. The results demonstrated that the PEIL exhibits potent radical scavenging activity against 1,1-diphenyl-2-picrythydrazyl (DPPH∙), 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid (ABTS+), and hydroxyl (∙OH) radicals. The serum concentrations of SOD and GSH-Px were higher, and MDA levels were lower, in the medium- and high-dose PEIL-treated groups than those in the aging group (p < 0.01), and the activity of MDA was lower than those of the model group (p < 0.01). The liver concentrations of SOD and GSH-Px were higher (p < 0.05), and MDA levels were lower, in the medium- and high-dose PEIL-treated groups than those in the aging control group (p < 0.01). These results suggest that optimizing the conditions of UAE using RSM could significantly increase the yield of PEIL extraction. PEIL possesses strong antioxidant activity and use as a medicine or functional food could be further investigated.
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Affiliation(s)
- Ying Chen
- School of Pharmacy, Wannan Medical College, Wuhu 241002, China; (Y.C.); (X.S.); (L.F.); (X.J.); (X.Z.); (Z.G.)
- Anhui Provincial Engineering Research Center for Polysaccharide Drugs, Anhui Province Key Lab of Active Biological Macromolecules, Anhui Provincial Engineering Laboratory for Screening and Re-Evaluation of Active Compounds of Herbal Medicines in Southern Anhui, Wuhu 241002, China
| | - Xuqiang Sun
- School of Pharmacy, Wannan Medical College, Wuhu 241002, China; (Y.C.); (X.S.); (L.F.); (X.J.); (X.Z.); (Z.G.)
| | - Lanting Fang
- School of Pharmacy, Wannan Medical College, Wuhu 241002, China; (Y.C.); (X.S.); (L.F.); (X.J.); (X.Z.); (Z.G.)
| | - Xinxiu Jiang
- School of Pharmacy, Wannan Medical College, Wuhu 241002, China; (Y.C.); (X.S.); (L.F.); (X.J.); (X.Z.); (Z.G.)
| | - Xuena Zhang
- School of Pharmacy, Wannan Medical College, Wuhu 241002, China; (Y.C.); (X.S.); (L.F.); (X.J.); (X.Z.); (Z.G.)
| | - Zijun Ge
- School of Pharmacy, Wannan Medical College, Wuhu 241002, China; (Y.C.); (X.S.); (L.F.); (X.J.); (X.Z.); (Z.G.)
| | - Rongbin Wang
- Institute of Chinese Medicine Resources, Scientific Research Department, Anhui College of Traditional Chinese Medicine, Wuhu 241000, China
- Correspondence: (R.W.); (C.W.); Tel.: +86-553-3932497 (C.W.)
| | - Cunqin Wang
- School of Pharmacy, Wannan Medical College, Wuhu 241002, China; (Y.C.); (X.S.); (L.F.); (X.J.); (X.Z.); (Z.G.)
- Anhui Provincial Engineering Research Center for Polysaccharide Drugs, Anhui Province Key Lab of Active Biological Macromolecules, Anhui Provincial Engineering Laboratory for Screening and Re-Evaluation of Active Compounds of Herbal Medicines in Southern Anhui, Wuhu 241002, China
- Correspondence: (R.W.); (C.W.); Tel.: +86-553-3932497 (C.W.)
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Sun T, Su Y, Sun M, Lv Y. Homologous chemiluminescence resonance energy transfer on the interface of WS2 quantum dots for monitoring photocatalytic H2O2 evaluation. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106344] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Słowikowski BK, Jankowski M, Jagodziński PP. The smoking estrogens - a potential synergy between estradiol and benzo(a)pyrene. Biomed Pharmacother 2021; 139:111658. [PMID: 34243627 DOI: 10.1016/j.biopha.2021.111658] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 04/20/2021] [Accepted: 04/21/2021] [Indexed: 02/04/2023] Open
Abstract
According to recent statistics, Lung Cancer (LC) is one of the most frequently diagnosed tumor types, representing nearly 12% of all global cancer cases. Moreover, in recent years, an increased mortality rate and incidence of this cancer were observed, especially among nonsmokers. Lung cancer patients are often characterized by poor prognosis and low survival rates, which encourages the scientific community to investigate the biochemical and molecular processes leading to the development of this malignancy. Furthermore, the mechanisms of LC formation and progression are not yet fully elucidated due to their high complexity, as well as a multitude of environmental, genetic, and molecular factors involved. Even though LC's association with exposure to cigarette smoke is indisputable, current research provides evidence that the development of this cancer can also be affected by the presence of estrogens and their interaction with several tobacco smoke components. Hence, the main goal of this brief review was to investigate reports of a possible synergy between 17β estradiol (E2), the most biologically active estrogen, and benzo(a)pyrene (BaP), a strongly carcinogenic compound produced as a result of incomplete tobacco combustion. The literature sources demonstrate a possible carcinogenic synergy between estrogens, especially E2, and BaP, a toxic tobacco smoke component. Therefeore, the combined effect of disturbed estrogen production in cancer cells, as well as the molecular influence exerted by BaP, could explain the increased aggressiveness and rate of LC development. Summarizing, the synergistic effect of these risk factors is an interesting area of further research.
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Affiliation(s)
- Bartosz Kazimierz Słowikowski
- Department of Biochemistry and Molecular Biology, Poznan University of Medical Sciences, Święcickiego 6 Street, 60-781 Poznan, Poland.
| | - Maurycy Jankowski
- Department of Anatomy, Poznan University of Medical Sciences, Święcickiego 6 Street, 60-781 Poznan, Poland
| | - Paweł Piotr Jagodziński
- Department of Biochemistry and Molecular Biology, Poznan University of Medical Sciences, Święcickiego 6 Street, 60-781 Poznan, Poland
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Kiersztan A, Gaanga K, Witecka A, Jagielski AK. DHEA-pretreatment attenuates oxidative stress in kidney-cortex and liver of diabetic rabbits and delays development of the disease. Biochimie 2021; 185:135-145. [PMID: 33771656 DOI: 10.1016/j.biochi.2021.03.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 02/15/2021] [Accepted: 03/17/2021] [Indexed: 02/02/2023]
Abstract
In view of reported discrepancies concerning antioxidant activity of dehydroepiandrosterone (DHEA), a widely used dietary supplement, the current investigation was undertaken to evaluate the antioxidant properties of DHEA in both kidney-cortex and liver of alloxan (ALX)-induced diabetic rabbits, as this diabetogenic compound exhibits the ROS-dependent action. ALX was injected to animals following 7 days of DHEA administration. Four groups of rabbits were used in the experiments: control, DHEA-treated control, diabetic and DHEA-treated diabetic. Our results show for the first time, that in kidney-cortex DHEA resulted in normalization of hydroxyl free radicals (HFR) levels and restoration of catalase (CAT) and glutathione peroxidase (GPx) activities to near the control values, while in liver DHEA prevented the malondialdehyde (MDA) accumulation and normalized glutathione reductase (GR) and glucose-6-phosphate dehydrogenase (G6PDH) activities. Moreover, in both kidney-cortex and liver DHEA supplementation prevented GSSG elevation accompanied by a decrease in GSH/GSSG ratio. Although DHEA attenuated oxidative stress in both kidney-cortex and liver of ALX-induced diabetic rabbits and significantly delayed the onset of diabetes in time, it did not protect against the final development of diabetes. In conclusion, the current investigation underscores the complexity of the antioxidant action of DHEA. The data are of clinical interest since DHEA supplementation could prevent the deleterious effects of ROS and delay, or even prevent the onset of many diseases. However, in view of the reported pro-oxidant effects of high DHEA doses, the potential use of this agent as a supplement needs a careful evaluation.
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Affiliation(s)
- Anna Kiersztan
- Department of Metabolic Regulation, Institute of Biochemistry, Faculty of Biology, University of Warsaw, I. Miecznikowa 1, 02-096, Warsaw, Poland.
| | - Kongorzul Gaanga
- Department of Metabolic Regulation, Institute of Biochemistry, Faculty of Biology, University of Warsaw, I. Miecznikowa 1, 02-096, Warsaw, Poland
| | - Apolonia Witecka
- Department of Metabolic Regulation, Institute of Biochemistry, Faculty of Biology, University of Warsaw, I. Miecznikowa 1, 02-096, Warsaw, Poland
| | - Adam K Jagielski
- Department of Metabolic Regulation, Institute of Biochemistry, Faculty of Biology, University of Warsaw, I. Miecznikowa 1, 02-096, Warsaw, Poland
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Dias LM, Sharifi F, de Keijzer MJ, Mesquita B, Desclos E, Kochan JA, de Klerk DJ, Ernst D, de Haan LR, Franchi LP, van Wijk AC, Scutigliani EM, Cavaco JEB, Tedesco AC, Huang X, Pan W, Ding B, Krawczyk PM, Heger M. Attritional evaluation of lipophilic and hydrophilic metallated phthalocyanines for oncological photodynamic therapy. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2021; 216:112146. [PMID: 33601256 DOI: 10.1016/j.jphotobiol.2021.112146] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 01/22/2021] [Accepted: 01/26/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND AND AIM Oncological photodynamic therapy (PDT) relies on photosensitizers (PSs) to photo-oxidatively destroy tumor cells. Currently approved PSs yield satisfactory results in superficial and easy-to-access tumors but are less suited for solid cancers in internal organs such as the biliary system and the pancreas. For these malignancies, second-generation PSs such as metallated phthalocyanines are more appropriate. Presently it is not known which of the commonly employed metallated phtahlocyanines, namely aluminum phthalocyanine (AlPC) and zinc phthalocyanine (ZnPC) as well as their tetrasulfonated derivatives AlPCS4 and ZnPCS4, is most cytotoxic to tumor cells. This study therefore employed an attritional approach to ascertain the best metallated phthalocyanine for oncological PDT in a head-to-head comparative analysis and standardized experimental design. METHODS ZnPC and AlPC were encapsulated in PEGylated liposomes. Analyses were performed in cultured A431 cells as a template for tumor cells with a dysfunctional P53 tumor suppressor gene and EGFR overexpression. First, dark toxicity was assessed as a function of PS concentration using the WST-1 and sulforhodamine B assay. Second, time-dependent uptake and intracellular distribution were determined by flow cytometry and confocal microscopy, respectively, using the intrinsic fluorescence of the PSs. Third, the LC50 values were established for each PS at 671 nm and a radiant exposure of 15 J/cm2 following 1-h PS exposure. Finally, the mode of cell death as a function of post-PDT time and cell cycle arrest at 24 h after PDT were analyzed. RESULTS In the absence of illumination, AlPC and ZnPC were not toxic to cells up to a 1.5-μM PS concentration and exposure for up to 72 h. Dark toxicity was noted for AlPCS4 at 5 μM and ZnPCS4 at 2.5 μM. Uptake of all PSs was observed as early as 1 min after PS addition to cells and increased in amplitude during a 2-h incubation period. After 60 min, the entire non-nuclear space of the cell was photosensitized, with PS accumulation in multiple subcellular structures, especially in case of AlPC and AlPCS4. PDT of cells photosensitized with ZnPC, AlPC, and AlPCS4 yielded LC50 values of 0.13 μM, 0.04 μM, and 0.81 μM, respectively, 24 h post-PDT (based on sulforhodamine B assay). ZnPCS4 did not induce notable phototoxicity, which was echoed in the mode of cell death and cell cycle arrest data. At 4 h post-PDT, the mode of cell death comprised mainly apoptosis for ZnPC and AlPC, the extent of which was gradually exacerbated in AlPC-photosensitized cells during 8 h. ZnPC-treated cells seemed to recover at 8 h post-PDT compared to 4 h post-PDT, which had been observed before in another cell line. AlPCS4 induced considerable necrosis in addition to apoptosis, whereby most of the cell death had already manifested at 2 h after PDT. During the course of 8 h, necrotic cell death transitioned into mainly late apoptotic cell death. Cell death signaling coincided with a reduction in cells in the G0/G1 phase (ZnPC, AlPC, AlPCS4) and cell cycle arrest in the S-phase (ZnPC, AlPC, AlPCS4) and G2 phase (ZnPC and AlPC). Cell cycle arrest was most profound in cells that had been photosensitized with AlPC and subjected to PDT. CONCLUSIONS Liposomal AlPC is the most potent PS for oncological PDT, whereas ZnPCS4 was photodynamically inert in A431 cells. AlPC did not induce dark toxicity at PS concentrations of up to 1.5 μM, i.e., > 37 times the LC50 value, which is favorable in terms of clinical phototoxicity issues. AlPC photosensitized multiple intracellular loci, which was associated with extensive, irreversible cell death signaling that is expected to benefit treatment efficacy and possibly immunological long-term tumor control, granted that sufficient AlPC will reach the tumor in vivo. Given the differential pharmacokinetics, intracellular distribution, and cell death dynamics, liposomal AlPC may be combined with AlPCS4 in a PS cocktail to further improve PDT efficacy.
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Affiliation(s)
- Lionel Mendes Dias
- Department of Pharmaceutics, Jiaxing Key Laboratory for Photonanomedicine and Experimental Therapeutics, College of Medicine, Jiaxing University, Jiaxing, Zhejiang, PR China; CICS-UBI, Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal; Department of Medical Biology, Cancer Center Amsterdam, Amsterdam UMC, Amsterdam, The Netherlands
| | - Farangis Sharifi
- Department of Medical Biology, Cancer Center Amsterdam, Amsterdam UMC, Amsterdam, The Netherlands; Laboratory of Experimental Oncology and Radiobiology (LEXOR), Cancer Center Amsterdam, Academic Medical Center, Amsterdam, The Netherlands
| | - Mark J de Keijzer
- Department of Pharmaceutics, Jiaxing Key Laboratory for Photonanomedicine and Experimental Therapeutics, College of Medicine, Jiaxing University, Jiaxing, Zhejiang, PR China; Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands
| | - Barbara Mesquita
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands
| | - Emilie Desclos
- Department of Medical Biology, Cancer Center Amsterdam, Amsterdam UMC, Amsterdam, The Netherlands; Laboratory of Experimental Oncology and Radiobiology (LEXOR), Cancer Center Amsterdam, Academic Medical Center, Amsterdam, The Netherlands
| | - Jakub A Kochan
- Department of Medical Biology, Cancer Center Amsterdam, Amsterdam UMC, Amsterdam, The Netherlands; Laboratory of Experimental Oncology and Radiobiology (LEXOR), Cancer Center Amsterdam, Academic Medical Center, Amsterdam, The Netherlands
| | - Daniel J de Klerk
- Department of Pharmaceutics, Jiaxing Key Laboratory for Photonanomedicine and Experimental Therapeutics, College of Medicine, Jiaxing University, Jiaxing, Zhejiang, PR China
| | - Daniël Ernst
- Department of Pharmaceutics, Jiaxing Key Laboratory for Photonanomedicine and Experimental Therapeutics, College of Medicine, Jiaxing University, Jiaxing, Zhejiang, PR China
| | - Lianne R de Haan
- Department of Pharmaceutics, Jiaxing Key Laboratory for Photonanomedicine and Experimental Therapeutics, College of Medicine, Jiaxing University, Jiaxing, Zhejiang, PR China
| | - Leonardo P Franchi
- Departamento de Bioquímica e Biologia Molecular, Instituto de Ciências Biológicas (ICB) 2, Campus Samambaia, Universidade Federal de Goiás (UFG), Goiânia, GO, Brazil; Department of Chemistry, Center of Nanotechnology and Tissue Engineering - Photobiology and Photomedicine Research Group, Faculty of Philosophy, Sciences, and Letters of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Albert C van Wijk
- Department of Medical Biology, Cancer Center Amsterdam, Amsterdam UMC, Amsterdam, The Netherlands
| | - Enzo M Scutigliani
- Department of Medical Biology, Cancer Center Amsterdam, Amsterdam UMC, Amsterdam, The Netherlands; Laboratory of Experimental Oncology and Radiobiology (LEXOR), Cancer Center Amsterdam, Academic Medical Center, Amsterdam, The Netherlands
| | - José E B Cavaco
- CICS-UBI, Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
| | - Antonio C Tedesco
- Department of Chemistry, Center of Nanotechnology and Tissue Engineering - Photobiology and Photomedicine Research Group, Faculty of Philosophy, Sciences, and Letters of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Xuan Huang
- Department of Pharmaceutics, Jiaxing Key Laboratory for Photonanomedicine and Experimental Therapeutics, College of Medicine, Jiaxing University, Jiaxing, Zhejiang, PR China
| | - Weiwei Pan
- Department of Cell Biology, College of Medicine, Jiaxing University, Jiaxing, PR China
| | - Baoyue Ding
- Department of Pharmaceutics, Jiaxing Key Laboratory for Photonanomedicine and Experimental Therapeutics, College of Medicine, Jiaxing University, Jiaxing, Zhejiang, PR China
| | - Przemek M Krawczyk
- Department of Medical Biology, Cancer Center Amsterdam, Amsterdam UMC, Amsterdam, The Netherlands; Laboratory of Experimental Oncology and Radiobiology (LEXOR), Cancer Center Amsterdam, Academic Medical Center, Amsterdam, The Netherlands
| | - Michal Heger
- Department of Pharmaceutics, Jiaxing Key Laboratory for Photonanomedicine and Experimental Therapeutics, College of Medicine, Jiaxing University, Jiaxing, Zhejiang, PR China; Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands.
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Zhang C, Li F, Wen R, Zhang H, Elumalai P, Zheng Q, Chen H, Yang Y, Huang M, Ying G. Heterogeneous electro-Fenton using three-dimension NZVI-BC electrodes for degradation of neonicotinoid wastewater. WATER RESEARCH 2020; 182:115975. [PMID: 32622128 DOI: 10.1016/j.watres.2020.115975] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 05/21/2020] [Accepted: 05/23/2020] [Indexed: 06/11/2023]
Abstract
Neonicotinoids (NEOs), as the most widely used pesticides, pose a serious threat to water ecosystems, especially clothianidin (CLO). However, the degradation behavior of CLO, as a new type of persistent organic pollutant, is rarely studied in wastewater treatment. To bridge this gap, heterogeneous electro-Fenton system using three-dimension electrodes made of biochar-supported zero-valent iron nanoparticle hybrid material (NZVI-BC), abbreviated as 3D-ICE-EF system, is invented and initially applied in CLO wastewater degradation, without the addition of Fenton reagent. NZVI-BC in 3D-ICE-EF system can concentrate CLO on electrodes by excellent adsorption and effectively eliminate it to achieve self-cleaning effect. In addition, the deposition of iron mud (Fe(OH)3) and the circular utilization of Fe in Fenton system is effectively improved by the addition of hydroquinone (HQ) in 3D-ICE-EF system. The pH applicable scope of Fenton system is extended to alkaline condition by the applications of NZVI-BC electrodes. The increase in the acidity of electrolyte is considered the primary reason of the high degradation efficiency of CLO in 3D-ICE-EF system at an initial pH of 9.0. The degradation performance of 3D-ICE-EF system tends to be promoted by the increase of current intensity and air flow rate. Seven plausible mechanisms of CLO degradation were identified in 3D-ICE-EF system. The ecotoxicity evaluation of degradation products indicated that CLO degradation in 3D-ICE-EF system exhibits a remarkable tendency to reduce toxicity levels.
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Affiliation(s)
- Chao Zhang
- School of Civil Engineering & Transportation, South China University of Technology, Guangzhou, 510640, PR China; SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, School of Environment, South China Normal University, Guangzhou, 510006, PR China
| | - Feng Li
- School of Civil Engineering & Transportation, South China University of Technology, Guangzhou, 510640, PR China.
| | - Rubing Wen
- School of Civil Engineering & Transportation, South China University of Technology, Guangzhou, 510640, PR China
| | - Huike Zhang
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, School of Environment, South China Normal University, Guangzhou, 510006, PR China
| | - Punniyakotti Elumalai
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, School of Environment, South China Normal University, Guangzhou, 510006, PR China
| | - Qi Zheng
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, School of Environment, South China Normal University, Guangzhou, 510006, PR China
| | - Hongyu Chen
- School of Civil Engineering & Transportation, South China University of Technology, Guangzhou, 510640, PR China
| | - Yujie Yang
- School of Civil Engineering & Transportation, South China University of Technology, Guangzhou, 510640, PR China
| | - Mingzhi Huang
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, School of Environment, South China Normal University, Guangzhou, 510006, PR China.
| | - Guangguo Ying
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, School of Environment, South China Normal University, Guangzhou, 510006, PR China
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do Nascimento Cavalcante A, Lima LKF, Araújo CM, da Silva Santos FP, do Nascimento MO, de Castro E Sousa JM, Rai M, Feitosa CM. Toxicity, cytotoxicity, mutagenicity and in vitro antioxidant models of 2-oleyl-1,3-dipalmitoyl-glycerol isolated from the hexane extract of Platonia insignis MART seeds. Toxicol Rep 2020; 7:209-216. [PMID: 32025498 PMCID: PMC6997655 DOI: 10.1016/j.toxrep.2020.01.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Revised: 01/23/2020] [Accepted: 01/26/2020] [Indexed: 02/07/2023] Open
Abstract
2-oleyl-1,3-dipalmitoyl-glycerol (ODG) was obtained from Platonia insignis (bacurizeiro) seeds. There are no studies on its toxicity and protective activities against oxidative stress. This study was aimed to evaluate antioxidant effects in vitro, as well as to evaluate the toxicological and mutagenic effects of the ODG. ODG showed a median lethal dose (LD50) greater than 1200 μg mL-1 in A. salina. In the assay of A. cepa (0.2-0.002 mg mL-1) the ODG compound at the highest concentration was slightly cytotoxic with decrease in the size of roots and mitotic indexes, but did not induce chromosomal alterations. ODG (8.75-140.00 μg mL-1) was found to reduce nitric oxide production by 41.6 %, while the antioxidant standard ascorbic acid (AA) reduced 54.14 %. ODG (15.625-250.00 μg mL-1) promoted removal of the hydroxyl radical by 35.69 % at the highest concentration and was able to prevent lipid peroxidation induced by 2,2'-azobis-2-amidinopropane (AAPH), inhibiting the amount of TBARS formed, up to 35.69 %, a result close to that obtained with AA. Thus, ODG moderately reduced the levels of hydroxyl radicals, nitric oxide, and TBARS in vitro and was nontoxic at low concentrations.
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Affiliation(s)
- Antonio do Nascimento Cavalcante
- Institute of Education, Science and Technology of Maranhão, 65760-000, Presidente Dutra, MA, Brazil.,Postgraduate Program in Chemistry, Federal University of Piauí, 64049-550, Teresina, PI, Brazil
| | - Layana Karine Farias Lima
- Postgraduate Program in Pharmaceutical Sciences, Federal University of Piauí, 64049-550, Teresina, PI, Brazil
| | - Cristiany Marinho Araújo
- Institute of Education, Science and Technology of Piauí, Teresina Campus South Zone, 64018-000, Teresina, PI, Brazil
| | | | | | | | - Mahendra Rai
- Department of Biotechnology, SGB Amravati University, Amravati, 444 602, Maharashtra State, India
| | - Chistiane Mendes Feitosa
- Postgraduate Program in Pharmaceutical Sciences, Federal University of Piauí, 64049-550, Teresina, PI, Brazil.,Department of Chemistry, Federal University of Piauí, 64049-550, Teresina, PI, Brazil
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Chen Y, Liu X, Sun X, Zhang J, Mi Y, Li Q, Guo Z. Synthesis and Antioxidant Activity of Cationic 1,2,3-Triazole Functionalized Starch Derivatives. Polymers (Basel) 2020; 12:E112. [PMID: 31948022 PMCID: PMC7023368 DOI: 10.3390/polym12010112] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Revised: 12/14/2019] [Accepted: 12/17/2019] [Indexed: 12/15/2022] Open
Abstract
In this study, starch was chemically modified to improve its antioxidant activity. Five novel cationic 1,2,3-triazole functionalized starch derivatives were synthesized by using "click" reaction and N-alkylation. A convenient method for pre-azidation of starch was developed. The structures of the derivatives were analyzed using FTIR and 1H NMR. The radicals scavenging abilities of the derivatives against hydroxyl radicals, DPPH radicals, and superoxide radicals were tested in vitro in order to evaluate their antioxidant activity. Results revealed that all the cationic starch derivatives (2a-2e), as well as the precursor starch derivatives (1a-1e), had significantly improved antioxidant activity compared to native starch. In particular, the scavenging ability of the derivatives against superoxide radicals was extremely strong. The improved antioxidant activity benefited from the enhanced solubility and the added positive charges. The biocompatibility of the cationic derivatives was confirmed by the low hemolytic rate (<2%). The obtained derivatives in this study have great potential as antioxidant materials that can be applied in the fields of food and biomedicine.
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Affiliation(s)
- Yuan Chen
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, China (X.L.)
- Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiguang Liu
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, China (X.L.)
| | - Xueqi Sun
- Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jingjing Zhang
- Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yingqi Mi
- Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qing Li
- Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
| | - Zhanyong Guo
- Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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Huang M, Li J. Physiological regulation of reactive oxygen species in organisms based on their physicochemical properties. Acta Physiol (Oxf) 2020; 228:e13351. [PMID: 31344326 DOI: 10.1111/apha.13351] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 07/21/2019] [Accepted: 07/23/2019] [Indexed: 12/11/2022]
Abstract
Oxidative stress is recognized as free radical dyshomeostasis, which has damaging effects on proteins, lipids and DNA. However, during cell differentiation and proliferation and other normal physiological processes, free radicals play a pivotal role in message transmission and are considered important messengers. Organisms maintain free radical homeostasis through a sophisticated regulatory system in which these "2-faced" molecules play appropriate roles under physiological and pathological conditions. Reactive oxygen species (ROS), including a large number of free radicals, act as redox signalling molecules in essential cellular signalling pathways, including cell differentiation and proliferation. However, excessive ROS levels can induce oxidative stress, which is an important risk factor for diabetes, cancer and cardiovascular disease. An overall comprehensive understanding of ROS is beneficial for understanding the pathogenesis of certain diseases and finding new therapeutic treatments. This review primarily focuses on ROS cellular localization, sources, chemistry and molecular targets to determine how to distinguish between the roles of ROS as messengers and in oxidative stress.
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Affiliation(s)
- Mei‐Zhou Huang
- Key Lab of New Animal Drug Project of Gansu Province, Key Lab of Veterinary Pharmaceutical Development of Ministry of Agriculture Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS Lanzhou China
| | - Jian‐Yong Li
- Key Lab of New Animal Drug Project of Gansu Province, Key Lab of Veterinary Pharmaceutical Development of Ministry of Agriculture Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS Lanzhou China
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Assessing the effect on the generation of environmentally persistent free radicals in hydrothermal carbonization of sewage sludge. Sci Rep 2019; 9:17092. [PMID: 31745230 PMCID: PMC6863856 DOI: 10.1038/s41598-019-53781-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 10/30/2019] [Indexed: 02/05/2023] Open
Abstract
Environmentally persistent free radicals (EPFRs) have attracted increasing research interest in recent years. Herein, the generation of EPFRs during the hydrothermal carbonization of sewage sludge (SS) was studied. First, the surface morphology, functional groups, constituent elements and free radicals were characterized for a holistic description of the raw SS and the selected hydrochar obtained from hydrothermal carbonization of SS (SHC). Then, the impact of hydrothermal temperature, residence time and initial pH on the formation of EPFRs was explored in detail through the investigation of g-factors and intensities of EPFRs identified in SHC. The results have shown that the formation of EPFRs was affected by the factors mentioned above, in which the impact of temperature is the greatest. Two types of EPFRs were spotted in the hydrochar, oxygen-centered (O-centered) and carbon-centered (C-centered) EPFRs, which were caught in 120-150 °C and 260-280 °C, respectively. Moreover, the intensities of Electron Paramagnetic Resonance (EPR) signals enhanced with increasing hydrothermal temperature. Whereas, residence time and initial pH only affected the amount of EPFRs in a manner. Additionally, the half-life of the O-centered EPFRs and the C-centered EPFRs was determined as long as 160.45 days and 401.10 days, respectively, indicating that EPFRs are stable in a long time.
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Feng W, Zhang Y, Li Z, Zhai S, Lv W, Liu Z. Lighting Up NIR-II Fluorescence in Vivo: An Activable Probe for Noninvasive Hydroxyl Radical Imaging. Anal Chem 2019; 91:15757-15762. [DOI: 10.1021/acs.analchem.9b04002] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Wenqi Feng
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Yuying Zhang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Zhen Li
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Shuyang Zhai
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Weijie Lv
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Zhihong Liu
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
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Apostolidou C. OH radical in water from ab initio molecular dynamics simulation employing hybrid functionals. J Chem Phys 2019. [DOI: 10.1063/1.5107479] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Affiliation(s)
- Christina Apostolidou
- Mulliken Center for Theoretical Chemistry, Institute of Physical and Theoretical Chemistry, Rheinische Friedrich-Wilhelms-Universität Bonn, Beringstraße 4, 53115 Bonn, Germany
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Liu J, Cui J, Zhao T, Fan S, Zhang C, Hu Q, Hou X. Fe3O4-CeO2 loaded on modified activated carbon as efficient heterogeneous catalyst. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2018.12.052] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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23
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Ren Q, Yin C, Chen Z, Cheng M, Ren Y, Xie X, Li Y, Zhao X, Xu L, Yang H, Li W. Efficient sonoelectrochemical decomposition of chlorpyrifos in aqueous solution. Microchem J 2019. [DOI: 10.1016/j.microc.2018.10.032] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Kiersztan A, Trojan N, Tempes A, Nalepa P, Sitek J, Winiarska K, Usarek M. DHEA supplementation to dexamethasone-treated rabbits alleviates oxidative stress in kidney-cortex and attenuates albuminuria. J Steroid Biochem Mol Biol 2017; 174:17-26. [PMID: 28782595 DOI: 10.1016/j.jsbmb.2017.07.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 07/01/2017] [Accepted: 07/18/2017] [Indexed: 01/13/2023]
Abstract
Our recent study has shown that dehydroepiandrosterone (DHEA) administered to rabbits partially ameliorated several dexamethasone (dexP) effects on hepatic and renal gluconeogenesis, insulin resistance and plasma lipid disorders. In the current investigation, we present the data on DHEA protective action against dexP-induced oxidative stress and albuminuria in rabbits. Four groups of adult male rabbits were used in the in vivo experiment: (1) control, (2) dexP-treated, (3) DHEA-treated and (4) both dexP- and DHEA-treated. Administration of dexP resulted in accelerated generation of renal hydroxyl free radicals (HFR) and malondialdehyde (MDA), accompanied by diminished superoxide dismutase (SOD) and catalase activities and a dramatic rise in urinary albumin/creatinine ratio. Treatment with DHEA markedly reduced dexP-induced oxidative stress in kidney-cortex due to a decline in NADPH oxidase activity and enhancement of catalase activity. Moreover, DHEA effectively attenuated dexP-evoked albuminuria. Surprisingly, dexP-treated rabbits exhibited elevation of GSH/GSSG ratio, accompanied by a decrease in glutathione peroxidase (GPx) and glutathione-S-transferase (GST) activities as well as an increase in glucose-6-phosphate dehydrogenase (G6PDH) activity. Treatment with DHEA resulted in a decline in GSH/GSSG ratio and glutathione reductase (GR) activity, accompanied by an elevation of GPx activity. Interestingly, rabbits treated with both dexP and DHEA remained the control values of GSH/GSSG ratio. As the co-administration of DHEA with dexP resulted in (i) reduction of oxidative stress in kidney-cortex, (ii) attenuation of albuminuria and (iii) normalization of glutathione redox state, DHEA might limit several undesirable renal side effects during chronic GC treatment of patients suffering from allergies, asthma, rheumatoid arthritis and lupus. Moreover, its supplementation might be particularly beneficial for the therapy of patients with glucocorticoid-induced diabetes.
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Affiliation(s)
- Anna Kiersztan
- Department of Metabolic Regulation, Institute of Biochemistry, Faculty of Biology, University of Warsaw, I. Miecznikowa 1, 02-096 Warsaw, Poland.
| | - Nina Trojan
- Department of Metabolic Regulation, Institute of Biochemistry, Faculty of Biology, University of Warsaw, I. Miecznikowa 1, 02-096 Warsaw, Poland.
| | - Aleksandra Tempes
- Department of Metabolic Regulation, Institute of Biochemistry, Faculty of Biology, University of Warsaw, I. Miecznikowa 1, 02-096 Warsaw, Poland.
| | - Paweł Nalepa
- Department of Metabolic Regulation, Institute of Biochemistry, Faculty of Biology, University of Warsaw, I. Miecznikowa 1, 02-096 Warsaw, Poland.
| | - Joanna Sitek
- Department of Metabolic Regulation, Institute of Biochemistry, Faculty of Biology, University of Warsaw, I. Miecznikowa 1, 02-096 Warsaw, Poland.
| | - Katarzyna Winiarska
- Department of Metabolic Regulation, Institute of Biochemistry, Faculty of Biology, University of Warsaw, I. Miecznikowa 1, 02-096 Warsaw, Poland.
| | - Michał Usarek
- Department of Metabolic Regulation, Institute of Biochemistry, Faculty of Biology, University of Warsaw, I. Miecznikowa 1, 02-096 Warsaw, Poland.
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Bayarsaikhan G, Dondurmacioglu F, Avan AN, Cekic SD, Apak R. Novel Colorimetric Assay of 2,3-Dihydroxybenzoate among Other Isomers as a Selective Indicator of Hydroxyl Radical Damage and Related Antioxidant Activity. ANAL LETT 2017. [DOI: 10.1080/00032719.2017.1328689] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
| | - Ferda Dondurmacioglu
- Department of Chemistry, Faculty of Engineering, Istanbul University, Istanbul, Turkey
| | - Asli Neslihan Avan
- Department of Chemistry, Faculty of Engineering, Istanbul University, Istanbul, Turkey
| | - Sema Demirci Cekic
- Department of Chemistry, Faculty of Engineering, Istanbul University, Istanbul, Turkey
| | - Resat Apak
- Department of Chemistry, Faculty of Engineering, Istanbul University, Istanbul, Turkey
- Turkish Academy of Sciences (TUBA), Cankaya, Ankara, Turkey
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27
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Yuan Y, Liu Y, Liu M, Chen Q, Jiao Y, Liu Y, Meng Z. Optimization extraction and bioactivities of polysaccharide from wild Russula griseocarnosa. Saudi Pharm J 2017; 25:523-530. [PMID: 28579887 PMCID: PMC5447442 DOI: 10.1016/j.jsps.2017.04.018] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
The extraction conditions and biological activities of polysaccharides from wild Russula griseocarnosa (PRG) were investigated. Response Surface Methodology (RSM) with a Box-Behnken Design (BBD) was used to optimize extraction conditions. The optimal extraction parameters of PRG were as follows: extracting time 4 h, extraction temperature 77.3 °C and liquid-solid ratio 42.5 g/L. Furthermore, the data demonstrated that PRG exhibited antioxidant activities evidenced by reducing power to scavenge the DPPH, ABTS, hydroxyl radical and superoxide radical. PRG showed the activity of anti-cervical carcinoma cells Hela and Siha. In conclusion this study offered an efficient extraction method of wild Russula griseocarnosa polysaccharide, and the results suggested PRG had good antioxidant and inhibitory activities against cervical carcinoma cells, and PRG could be developed as a novel natural functional food.
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Affiliation(s)
- Ye Yuan
- The Department of Medicine Laboratory, The First Hospital, Jilin University, Changchun 130061, China
| | - Yang Liu
- The Engineering Research Centre of Chinese Ministry of Education for Edible and Medicinal Fungi, Jilin Agricultural University, Changchun 130018, China
| | - Mengdi Liu
- The Engineering Research Centre of Chinese Ministry of Education for Edible and Medicinal Fungi, Jilin Agricultural University, Changchun 130018, China
| | - Qian Chen
- Institute of Translational Medicine, The First Hospital, Jilin University, Changchun 130061, China
| | - Yuanyuan Jiao
- Institute of Translational Medicine, The First Hospital, Jilin University, Changchun 130061, China
| | - Yan Liu
- School of Life Sciences, Jilin University, Changchun 130012, China
| | - Zhaoli Meng
- Institute of Translational Medicine, The First Hospital, Jilin University, Changchun 130061, China
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Jia H, Nulaji G, Gao H, Wang F, Zhu Y, Wang C. Formation and Stabilization of Environmentally Persistent Free Radicals Induced by the Interaction of Anthracene with Fe(III)-Modified Clays. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:6310-9. [PMID: 27224055 DOI: 10.1021/acs.est.6b00527] [Citation(s) in RCA: 100] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Environmentally persistent free radicals (EPFRs) are occasionally detected in Superfund sites but the formation of EPFRs induced by polycyclic aromatic hydrocarbons (PAHs) is not well understood. In the present work, the formation of EPFRs on anthracene-contaminated clay minerals was quantitatively monitored via electron paramagnetic resonance (EPR) spectroscopy, and surface/interface-related environmental influential factors were systematically explored. The obtained results suggest that EPFRs are more readily formed on anthracene-contaminated Fe(III)-montmorillonite than in other tested systems. Depending on the reaction condition, more than one type of organic radicals including anthracene-based radical cations with g-factors of 2.0028-2.0030 and oxygenic carbon-centered radicals featured by g-factors of 2.0032-2.0038 were identified. The formed EPFRs are stabilized by their interaction with interlayer surfaces, and such surface-bound EPFRs exhibit slow decay with 1/e-lifetime of 38.46 days. Transformation pathway and possible mechanism are proposed on the basis of experimental results and quantum mechanical simulations. Overall, the formation of EPFRs involves single-electron-transfer from anthracene to Fe(III) initially, followed by H2O addition on formed aromatic radical cation. Because of their potential exposure in soil and atmosphere, such clay surface-associated EPFRs might induce more serious toxicity than PAHs and exerts significant impacts on human health.
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Affiliation(s)
- Hanzhong Jia
- Laboratory of Environmental Sciences and Technology, Xinjiang Technical Institute of Physics & Chemistry, Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences , 40-1 South Beijing Road, Urumqi 830011, China
| | - Gulimire Nulaji
- Laboratory of Environmental Sciences and Technology, Xinjiang Technical Institute of Physics & Chemistry, Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences , 40-1 South Beijing Road, Urumqi 830011, China
- School of Geology and Mining Engineering, Xinjiang University , Urumqi 830046, China
| | - Hongwei Gao
- Laboratory of Environmental Sciences and Technology, Xinjiang Technical Institute of Physics & Chemistry, Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences , 40-1 South Beijing Road, Urumqi 830011, China
| | - Fu Wang
- Laboratory of Environmental Sciences and Technology, Xinjiang Technical Institute of Physics & Chemistry, Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences , 40-1 South Beijing Road, Urumqi 830011, China
| | - Yunqing Zhu
- Laboratory of Environmental Sciences and Technology, Xinjiang Technical Institute of Physics & Chemistry, Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences , 40-1 South Beijing Road, Urumqi 830011, China
| | - Chuanyi Wang
- Laboratory of Environmental Sciences and Technology, Xinjiang Technical Institute of Physics & Chemistry, Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences , 40-1 South Beijing Road, Urumqi 830011, China
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29
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Hydrogen Sulfide and Cellular Redox Homeostasis. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2016; 2016:6043038. [PMID: 26881033 PMCID: PMC4736422 DOI: 10.1155/2016/6043038] [Citation(s) in RCA: 149] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2015] [Revised: 11/23/2015] [Accepted: 12/01/2015] [Indexed: 01/06/2023]
Abstract
Intracellular redox imbalance is mainly caused by overproduction of reactive oxygen species (ROS) or weakness of the natural antioxidant defense system. It is involved in the pathophysiology of a wide array of human diseases. Hydrogen sulfide (H2S) is now recognized as the third “gasotransmitters” and proved to exert a wide range of physiological and cytoprotective functions in the biological systems. Among these functions, the role of H2S in oxidative stress has been one of the main focuses over years. However, the underlying mechanisms for the antioxidant effect of H2S are still poorly comprehended. This review presents an overview of the current understanding of H2S specially focusing on the new understanding and mechanisms of the antioxidant effects of H2S based on recent reports. Both inhibition of ROS generation and stimulation of antioxidants are discussed. H2S-induced S-sulfhydration of key proteins (e.g., p66Shc and Keap1) is also one of the focuses of this review.
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30
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Yuan X, Zeng Y, Nie K, Luo D, Wang Z. Extraction Optimization, Characterization and Bioactivities of a Major Polysaccharide from Sargassum thunbergii. PLoS One 2015; 10:e0144773. [PMID: 26649576 PMCID: PMC4674119 DOI: 10.1371/journal.pone.0144773] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Accepted: 11/23/2015] [Indexed: 11/19/2022] Open
Abstract
Sargassum thunbergii is a kind of natural edible algae. STP (S. thunbergii polysaccharides) was considered as the main bioactive compounds in S. thunbergii. To obtain the optimal processing conditions for maximum total sugar yield, single factor investigation and response surface methodology (RSM) were employed. The optimal processing conditions were as follows: liquid to solid ratio 120 mL/g, extraction time 210 min, extraction temperature 97°C. The experimental yield 7.53% under optimized conditions was closely agreed with the predicted yield 7.85% of the model. The major polysaccharide fraction from S. thunbergii (named STP-II) was purified by DEAE-Sepharose CL-6B column chromatography. High-performance size-exclusion chromatography (HPSEC), gas chromatography (GC) and high-performance liquid chromatography (HPLC) were used to identify its characterizations, and in vitro antioxidant assays and cytotoxicity assays were used to research its bioactivities. The purified fraction STP-II (63.75%) was a single peak in HPSEC with Sugar KS-804 column, had a molecular weight of 550KD, and comprised mainly of fucose, xylose, galactose, glucose and glucuronic acid. STP-II had higher scavenging activities on hydroxyl radical (76.72% at 0.7 mg/mL) and superoxide radical (95.17% at 2 mg/mL) than Vitamin C (Vc). STP-II also exhibited the capability of anti-proliferation in Caco-2 cells. STP-II possessed good antioxidant and inhibitory activity against human colon cancer Caco-2 cells in vitro and could be explored as novel natural functional food.
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Affiliation(s)
- Xiumei Yuan
- Department of Bioengineering and Biotechnology, Huaqiao University, Fujian Xiamen, China
| | - Yawei Zeng
- Department of Bioengineering and Biotechnology, Huaqiao University, Fujian Xiamen, China
| | - Kaiying Nie
- Department of Bioengineering and Biotechnology, Huaqiao University, Fujian Xiamen, China
| | - Dianhui Luo
- Department of Bioengineering and Biotechnology, Huaqiao University, Fujian Xiamen, China
| | - Zhaojing Wang
- Department of Bioengineering and Biotechnology, Huaqiao University, Fujian Xiamen, China
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Wu R, Wu C, Liu D, Yang X, Huang J, Zhang J, Liao B, He H, Li H. Overview of Antioxidant Peptides Derived from Marine Resources: The Sources, Characteristic, Purification, and Evaluation Methods. Appl Biochem Biotechnol 2015; 176:1815-33. [PMID: 26041057 DOI: 10.1007/s12010-015-1689-9] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Accepted: 05/25/2015] [Indexed: 01/02/2023]
Abstract
Marine organisms are rich sources of structurally diverse bioactive nitrogenous components. In recent years, numerous bioactive peptides have been identified in a range of marine protein resources, such as antioxidant peptides. Many studies have approved that marine antioxidant peptides have a positive effect on human health and the food industry. Antioxidant activity of peptides can be attributed to free radicals scavenging, inhibition of lipid peroxidation, and metal ion chelating. Moreover, it has also been verified that peptide structure and its amino acid sequence can mainly affect its antioxidant properties. The aim of this review is to summarize kinds of antioxidant peptides from various marine resources. Additionally, the relationship between structure and antioxidant activities of peptides is discussed in this paper. Finally, current technologies used in the preparation, purification, and evaluation of marine-derived antioxidant peptides are also reviewed.
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Affiliation(s)
- RiBang Wu
- School of Life Science, State Key Laboratory of Medical Genetics, Central South University, Changsha, 410013, China
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The antimicrobial activity of gramicidin A is associated with hydroxyl radical formation. PLoS One 2015; 10:e0117065. [PMID: 25622083 PMCID: PMC4306519 DOI: 10.1371/journal.pone.0117065] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2014] [Accepted: 12/18/2014] [Indexed: 11/19/2022] Open
Abstract
Gramicidin A is an antimicrobial peptide that destroys gram-positive bacteria. The bactericidal mechanism of antimicrobial peptides has been linked to membrane permeation and metabolism disruption as well as interruption of DNA and protein functions. However, the exact bacterial killing mechanism of gramicidin A is not clearly understood. In the present study, we examined the antimicrobial activity of gramicidin A on Staphylococcus aureus using biochemical and biophysical methods, including hydroxyl radical and NAD+/NADH cycling assays, atomic force microscopy, and Fourier transform infrared spectroscopy. Gramicidin A induced membrane permeabilization and changed the composition of the membrane. The morphology of Staphylococcus aureus during gramicidin A destruction was divided into four stages: pore formation, water permeability, bacterial flattening, and lysis. Changes in membrane composition included the destruction of membrane lipids, proteins, and carbohydrates. Most interestingly, we demonstrated that gramicidin A not only caused membrane permeabilization but also induced the formation of hydroxyl radicals, which are a possible end product of the transient depletion of NADH from the tricarboxylic acid cycle. The latter may be the main cause of complete Staphylococcus aureus killing. This new finding may provide insight into the underlying bactericidal mechanism of gA.
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Tatsumi H, Tsuchiya Y, Sakamoto K. Sensitive electrochemical measurement of hydroxyl radical generation induced by the xanthine-xanthine oxidase system. Anal Biochem 2014; 467:22-7. [PMID: 25180984 DOI: 10.1016/j.ab.2014.08.028] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Revised: 08/20/2014] [Accepted: 08/22/2014] [Indexed: 11/25/2022]
Abstract
A sensitive electrochemical measurement system for hydroxyl radical (OH) was developed using enzyme-catalyzed signal amplification. In the presence of 2,6-xylenol as a trapping agent, glucose as a substrate, and pyrroloquinoline quinone-dependent glucose dehydrogenase (PQQ-GDH) as a catalyst, the amperometric signal of the trapping adduct 2,6-dimethylhydroquinone (DMHQ) produced by the hydroxylation of 2,6-xylenol was able to be amplified and detected sensitively. The limit of detection (signal/noise [S/N]=3) for DMHQ was 1 nM. There was no significant interference from urate and other oxidizable compounds in the reaction mixture at the applied potential of 0V versus Ag/AgCl. This method was employed to observe the OH generation induced by the xanthine-xanthine oxidase (XO) system. The reaction rates of the DMHQ production induced from the xanthine-XO system in the presence and absence of various Fe(III) complexes and proteins were compared. Those with a free coordination site on the Fe atom effectively enhanced the OH generation.
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Affiliation(s)
- Hirosuke Tatsumi
- Department of Chemistry, Faculty of Science, Shinshu University, Matsumoto, Nagano 390-8621, Japan.
| | - Yui Tsuchiya
- Department of Chemistry, Faculty of Science, Shinshu University, Matsumoto, Nagano 390-8621, Japan
| | - Koichi Sakamoto
- Department of Chemistry, Faculty of Science, Shinshu University, Matsumoto, Nagano 390-8621, Japan
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Isaka S, Cho K, Nakazono S, Abu R, Ueno M, Kim D, Oda T. Antioxidant and anti-inflammatory activities of porphyran isolated from discolored nori (Porphyra yezoensis). Int J Biol Macromol 2014; 74:68-75. [PMID: 25499893 DOI: 10.1016/j.ijbiomac.2014.11.043] [Citation(s) in RCA: 82] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2014] [Revised: 10/31/2014] [Accepted: 11/25/2014] [Indexed: 01/01/2023]
Abstract
We found that discolored waste nori with no commercial value, contains much higher level of porphyran than normal nori that is a sheeted food stuff prepared from P. yezoensis used in sushi. Chemical analyses revealed that mean molecular mass of the porphyran prepared from discolored nori (dc-porphyran) was much lower than that of the porphyran from normal nori (n-porphyran). Dc-porphyran showed slightly greater scavenging activity toward superoxide anion and hydroxyl radical than n-porphyran. Dc-porphyran inhibited nitric oxide (NO) production in LPS-stimulated RAW264.7 cells through preventing the expression of inducible NO synthase, whereas no such activity was observed in n-porphyran. Since acid-hydrolyzed n-porphyran showed the inhibitory activity on NO production from LPS-stimulated RAW264.7 cells, the molecular size of porphyran was suggested to be a critical factor for the activity. Dc-porphyran was separated into 4 fractions (F1-F4) on DEAE-chromatography, and F1 showed the highest inhibitory effect on NO production from LPS-stimulated RAW264.7 cells. Our results indicate that discolored waste nori is useful as a source of porphyran with even better bioactivities than porphyran from normal nori.
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Affiliation(s)
- Shogo Isaka
- Graduate School of Fisheries Science and Environmental Studies, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Nagasaki, Japan
| | - Kichul Cho
- Korea University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon, Republic of Korea; Jeju center, Korea Basic Science Institute (KBSI), Jeju 690-756, Republic of Korea
| | - Satoru Nakazono
- Graduate School of Fisheries Science and Environmental Studies, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Nagasaki, Japan
| | - Ryogo Abu
- Graduate School of Fisheries Science and Environmental Studies, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Nagasaki, Japan
| | - Mikinori Ueno
- Graduate School of Fisheries Science and Environmental Studies, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Nagasaki, Japan
| | - Daekyung Kim
- Korea University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon, Republic of Korea; Jeju center, Korea Basic Science Institute (KBSI), Jeju 690-756, Republic of Korea.
| | - Tatsuya Oda
- Graduate School of Fisheries Science and Environmental Studies, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Nagasaki, Japan; Division of Biochemistry, Faculty of Fisheries, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Nagasaki, Japan.
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Doğan Z, Kocahan S, Erdemli E, Köse E, Yılmaz I, Ekincioğlu Z, Ekinci N, Turkoz Y. Effect of chemotherapy exposure prior to pregnancy on fetal brain tissue and the potential protective role of quercetin. Cytotechnology 2014; 67:1031-8. [PMID: 25260542 DOI: 10.1007/s10616-014-9742-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Accepted: 05/03/2014] [Indexed: 01/01/2023] Open
Abstract
Cyclophosphamide (CYC) and doxorubicin (DOX) are among the most effective and widely used anticancer chemotherapeutic drugs. Potential chemopreventive and chemotherapeutic functions have recently been attributed to flavonoids. We hypothesized that Quercetin (QR) would protect against the toxic effects of chemotherapeutic agents applied prior to pregnancy. Rats were treated with the chemotherapeutic drugs CYC (27 mg/kg) and DOX (1.8 mg/kg) applied in a single intraperitoneal dose once every 3 weeks for 10 weeks. QR was administered at a dose of 10 mg/kg/day by oral gavage. 48 h following the experimental chemotherapy exposure, female rats were transferred to cages containing male rat for mating. Fetal brain tissues were removed from fetuses extracted by cesarean section on the 20th day of gestation for evaluation of antioxidant parameters. A significant increase in superoxide dismutase and malondialdehyde activity was observed in CYC and DOX treatment groups relative to the control group (p < 0.05). Similarly, carnitine acylcarnitine translocase and Glutathione activity was significantly reduced in the CYC and DOX groups relative to the control group (p < 0.05). Our results indicate that the use of chemotherapeutic drugs before pregnancy can result in oxidative damage to fetal brain tissue. Therefore, women who have been exposed to chemotherapy and may become pregnant should be treated with antioxidant compounds such as QR to reduce the risk of damage to fetal brain tissues.
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Affiliation(s)
- Z Doğan
- Department of Anatomy, Faculty of Medicine, Adiyaman University, 02040, Adiyaman, Turkey
| | - S Kocahan
- Department of Physiology, Faculty of Medicine, Adiyaman University, 02040, Adiyaman, Turkey. .,International Scientific Center, Baku State University, Baku, Azerbaijan.
| | - E Erdemli
- Department of Biochemistry, Faculty of Medicine, Inonu University, 44280, Malatya, Turkey
| | - E Köse
- Department of Anatomy, Faculty of Medicine, Inonu University, 44280, Malatya, Turkey
| | - I Yılmaz
- Department of Pharmacology, Faculty of Pharmacy, Inonu University, 44280, Malatya, Turkey
| | - Z Ekincioğlu
- Department of Anatomy, Faculty of Medicine, Karabuk University, Karabuk, Turkey
| | - N Ekinci
- Department of Anatomy, Faculty of Medicine, Karabuk University, Karabuk, Turkey
| | - Y Turkoz
- Department of Biochemistry, Faculty of Medicine, Inonu University, 44280, Malatya, Turkey
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Oxidative cleavage-based upconversional nanosensor for visual evaluation of antioxidant activity of drugs. Biosens Bioelectron 2014; 64:88-93. [PMID: 25194801 DOI: 10.1016/j.bios.2014.08.061] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Revised: 08/21/2014] [Accepted: 08/22/2014] [Indexed: 11/22/2022]
Abstract
In this work, we reported a simple and effective upconversional nanoprobe for selective detection of hydroxyl radical (OH) and visual evaluation of OH-scavenging activities of drugs for the first time. The upconversion luminescence from NaYF4:Yb,Er nanoparticles was first quenched by carminic acid (CA) through luminescence resonance energy transfer (LRET) mechanism, and then hydroxyl radical-initiated oxidative cleavage of CA can recover the luminescence by inhibition of LRET. The nanosensors exhibited high selectivity towards other reactive oxygen species and many common metal ions with the detection limit down to 0.21 μM, and displayed a relative standard deviation ranging from 1.17% to 3.13%. More attractively, the nanosensors have efficiently avoided the interference of autofluorescence upon near-infrared excitation, and provided a robust platform to study hydroxyl radical scavenging abilities of several common antioxidants such as tannic acid, ascorbic acid and ferulic acid, and visually evaluate antioxidant activities of five traditional Chinese medicines by luminescent images. This newly developed nanosensor could be further exploited for many applications in pharmaceutical, biomedical and environmental engineering areas.
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Liao S, Pan B, Li H, Zhang D, Xing B. Detecting free radicals in biochars and determining their ability to inhibit the germination and growth of corn, wheat and rice seedlings. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2014; 48:8581-8587. [PMID: 24988274 DOI: 10.1021/es404250a] [Citation(s) in RCA: 183] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Biochar can benefit human society as a carbon-negative material and soil amendment. However, negative biochar impacts on plant germination and growth have been observed, and they have not been fully explained. Therefore, protocols to avoid these risks cannot be proposed. We hypothesized that the free radicals generated during charring may inhibit plant germination and growth. Significant electron paramagnetic resonance (EPR) signals were observed in the biochars derived from several types of common biomass (corn stalk, rice, and wheat straws) and the major biopolymer components of biomass (cellulose and lignin), but not in the original materials, suggesting the ubiquitous presence of free radicals in biochars. EPR signal intensity increased with increasing pyrolysis temperature, and it was dominantly contributed by oxygen centered in the mixture of oxygen- and carbon-centered free radicals as the temperature increased. The free radicals in biochars induced strong ·OH radicals in the aqueous phase. Significant germination inhibition, root and shoot growth retardation and plasma membrane damage were observed for biochars with abundant free radicals. Germination inhibition and plasma membrane damage were not obvious for biochars containing low free radicals, but they were apparent at comparable concentrations of conventional contaminants, such as heavy metals and polyaromatic hydrocarbons. The potential risk and harm of relatively persistent free radicals in biochars must be addressed to apply them safely.
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Affiliation(s)
- Shaohua Liao
- Faculty of Environmental Science & Engineering, Kunming University of Science & Technology , Kunming 650500, China
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Winiarska K, Focht D, Sierakowski B, Lewandowski K, Orlowska M, Usarek M. NADPH oxidase inhibitor, apocynin, improves renal glutathione status in Zucker diabetic fatty rats: A comparison with melatonin. Chem Biol Interact 2014; 218:12-9. [DOI: 10.1016/j.cbi.2014.04.005] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2013] [Revised: 12/27/2013] [Accepted: 04/04/2014] [Indexed: 10/25/2022]
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Si F, Zhang X, Yan K. The quantitative detection of HO˙ generated in a high temperature H2O2 bleaching system with a novel fluorescent probe benzenepentacarboxylic acid. RSC Adv 2014. [DOI: 10.1039/c3ra45975f] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
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40
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Beckert U, Aw WY, Burhenne H, Försterling L, Kaever V, Timmons L, Seifert R. The Receptor-Bound Guanylyl Cyclase DAF-11 Is the Mediator of Hydrogen Peroxide-Induced cGMP Increase in Caenorhabditis elegans [corrected].. PLoS One 2013; 8:e72569. [PMID: 24015261 PMCID: PMC3754915 DOI: 10.1371/journal.pone.0072569] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2013] [Accepted: 07/11/2013] [Indexed: 11/20/2022] Open
Abstract
Adenosine 3′, 5′-cyclic monophosphate (cAMP) and guanosine 3′, 5′-cyclic monophosphate (cGMP) are well-studied second messengers that transmit extracellular signals into mammalian cells, with conserved functions in various other species such as Caenorhabditis elegans (C. elegans). cAMP is generated by adenylyl cyclases, and cGMP is generated by guanylyl cyclases, respectively. Studies using C. elegans have revealed additional roles for cGMP signaling in lifespan extension. For example, mutants lacking the function of a specific receptor-bound guanylyl cyclase, DAF-11, have an increased life expectancy. While the daf-11 phenotype has been attributed to reductions in intracellular cGMP concentrations, the actual content of cyclic nucleotides has not been biochemically determined in this system. Similar assumptions were made in studies using phosphodiesterase loss-of-function mutants or using adenylyl cyclase overexpressing mutants. In the present study, cyclic nucleotide regulation in C. elegans was studied by establishing a special nematode protocol for the simultaneous detection and quantitation of cyclic nucleotides. We also examined the influence of reactive oxygen species (ROS) on cyclic nucleotide metabolism and lifespan in C. elegans using highly specific HPLC-coupled tandem mass-spectrometry and behavioral assays. Here, we show that the relation between cGMP and survival is more complex than previously appreciated.
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Affiliation(s)
- Ulrike Beckert
- Institute of Pharmacology, Hannover Medical School, Hannover, Germany
| | - Wen Yih Aw
- Institute of Pharmacology, Hannover Medical School, Hannover, Germany
- Department of Molecular Biosciences, University of Kansas, Lawrence, Kansas, United States of America
| | - Heike Burhenne
- Institute of Pharmacology, Hannover Medical School, Hannover, Germany
| | - Lisa Försterling
- Institute of Pharmacology, Hannover Medical School, Hannover, Germany
| | - Volkhard Kaever
- Institute of Pharmacology, Hannover Medical School, Hannover, Germany
- Research Core Unit Mass Spectrometry-Metabolomics, Hannover Medical School, Hannover, Germany
| | - Lisa Timmons
- Department of Molecular Biosciences, University of Kansas, Lawrence, Kansas, United States of America
| | - Roland Seifert
- Institute of Pharmacology, Hannover Medical School, Hannover, Germany
- * E-mail:
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Abu R, Jiang Z, Ueno M, Okimura T, Yamaguchi K, Oda T. In vitro antioxidant activities of sulfated polysaccharide ascophyllan isolated from Ascophyllum nodosum. Int J Biol Macromol 2013; 59:305-12. [PMID: 23643974 DOI: 10.1016/j.ijbiomac.2013.04.035] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Revised: 04/11/2013] [Accepted: 04/12/2013] [Indexed: 02/06/2023]
Abstract
Antioxidant activities of sulfated polysaccharide ascophyllan from Ascophyllum nodosum was investigated in vitro by various assays, and compared with those of fucoidan. A chemiluminescence (CL) analysis using a luminol analog, L-012, showed that ascophyllan scavenges superoxide, and the activity is greater than fucoidan. However, in the presence of 10μg/ml of ascophyllan or 10μg/ml and 100μg/ml of fucoidan, slightly enhanced CL-responses were observed. Since EDTA-treatment resulted in disappearance of the enhancement effects, it was suggested that metal ions especially iron ions in the polysaccharides might be involved in this phenomenon. In fact, metal element analysis revealed that ascophyllan and fucoidan inherently contain iron and other metal elements. EDTA-treatment resulted in significant increase in Fe(2+)-chelating activities of these polysaccharides. In an electron spin resonance (ESR)-spin trapping analysis in which direct UV-radiation to hydrogen peroxide was used as a source of hydroxyl radical, ascophyllan and fucoidan showed potent hydroxyl radical scavenging activity with similar extent. Reducing power of ascophyllan was stronger than that of fucoidan. Our results indicate that ascophyllan can exhibit direct and potent antioxidant activity.
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Affiliation(s)
- Ryogo Abu
- Division of Biochemistry, Faculty of Fisheries, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki, Nagasaki 852-8521, Japan
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Donoghue MA, Xu X, Bernlohr DA, Arriaga EA. Capillary electrophoretic analysis of hydroxyl radicals produced by respiring mitochondria. Anal Bioanal Chem 2013; 405:6053-60. [PMID: 23665638 DOI: 10.1007/s00216-013-7022-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2013] [Revised: 04/20/2013] [Accepted: 04/25/2013] [Indexed: 12/20/2022]
Abstract
Here, we report the use of a capillary electrophoretic method with laser-induced fluorescence detection to evaluate hydroxyl radicals produced by respiring mitochondria. The probe, hydroxyphenylfluorescein (HPF), is separated from the product, fluorescein, in under 5 min with zeptomole and attomole limits of detection for fluorescein and HPF, respectively. Purification of the probe with a C-18 SPE column is necessary to reduce the fluorescein impurity in the probe stock solution from 0.4% to less than 0.001%. HPF was responsive to hydroxyl radicals produced by isolated mitochondria from L6 cells, and this signal was blunted when DMSO was added to scavenge hydroxyl radicals and when carbonyl cyanide m-chlorophenylhydrazone was added to depolarize the mitochondria. The method was used to compare hydroxyl radical levels in mitochondria isolated from brown adipose tissue of lean and obese mice. Mitochondria from obese mice produced significantly more hydroxyl radicals than those from lean mice.
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Affiliation(s)
- Margaret A Donoghue
- Department of Chemistry, University of Minnesota, 207 Pleasant St. SE, Minneapolis, MN 55455, USA
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Ren J, Luo J, Ma H, Wang X, Ma LQ. Bioavailability and oxidative stress of cadmium to Corbicula fluminea. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2013; 15:860-869. [PMID: 23483045 DOI: 10.1039/c3em30288a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
This work set out to study the effects of cadmium (Cd) in sediments on the antioxidant enzyme activities in the digestive gland of Asian clam Corbicula fluminea and to explore the potential for applying these responses to evaluate the Cd-contaminated sediment. Additionally, diffusive gradients in thin-films (DGT) technique was used to predict the response of its antioxidant defense system. The sediments, collected from Taihu Lake, were spiked with Cd at different concentrations (0.72, 0.91, 1.62, 2.59, 11.2, 20.4 and 40.6 mg kg(-1), dry weight). Asian clam was cultivated for 28 days. Concentrations of Cd in the body of Asian clam had a good relationship with concentrations of Cd in overlying water and sediments, as measured by DGT. Cd affected these biochemical parameters significantly, especially for superoxide (SOD), peroxidase (POD) and glutathione (GSH), which began to show higher sensitivity and have a significant difference in low dosage (0.91 mg Cd kg(-1)) compared with blank. Contents of MDA and MT, which were induced by Cd, increased with the increasing Cd concentration in sediments and reached peak values at 11.2 and 20.4 mg kg(-1), respectively, after 28 days exposure. All of these results suggested that biochemical responses cooperated in detoxifying and maintaining cellular metabolic homeostasis. The R(2) of regression analysis between the contents of MT and the concentrations of Cd measured by DGT, in sediments and soft body were 0.71, 0.94 and 0.88 after 28 days exposure. This suggested that DGT measurement could predict the response of MT. Cd accumulation, GSH and MT were indispensable biomarkers and the MDA content and DGT appeared to be promising biomarkers. The results clearly indicated that Cd could induce oxidative stress in the digestive gland of Asian clam. The combination of biomonitors with DGT can obtain different information about Cd bioavailability and confirm the significance of applying a suite of biomarkers rather than a selective index to assess the sublethal effect. It also offered theoretical methods for the prediction of sediment Cd pollution.
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Affiliation(s)
- Jinghua Ren
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, 163 Xianlin Avenue, Nanjing 210046, PR China
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44
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Mu S, Chen C. Electrochemical Oxidation of Pyrogallol: Formation and Characterization of Long-Lived Oxygen Radicals and Application To Assess the Radical Scavenging Abilities of Antioxidants. J Phys Chem B 2012; 116:12567-73. [DOI: 10.1021/jp3059189] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Shaolin Mu
- Department of Chemistry, Yangzhou University, Yangzhou 225002, Jiangsu Province,
P. R. China
| | - Chong Chen
- Laboratory Center of Yangzhou University, Yangzhou
225002, Jiangsu Province, P. R. China
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45
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Naqvi KR, Marsh JM, Godfrey S, Davis MG, Flagler MJ, Hao J, Chechik V. The role of chelants in controlling Cu(II)-induced radical chemistry in oxidative hair colouring products. Int J Cosmet Sci 2012; 35:41-9. [DOI: 10.1111/j.1468-2494.2012.00755.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2012] [Accepted: 08/19/2012] [Indexed: 11/27/2022]
Affiliation(s)
- K. R. Naqvi
- Department of Chemistry; University of York; Heslington; York; YO10 5DD; UK
| | - J. M. Marsh
- The Procter & Gamble Company; Miami Valley Innovation Center; 11810 East Miami River Road; Cincinnati; OH; 45252; USA
| | - S. Godfrey
- Procter & Gamble Service GmbH; Berliner Allee 65; D-64274; Darmstadt; Germany
| | - M. G. Davis
- The Procter & Gamble Company; Miami Valley Innovation Center; 11810 East Miami River Road; Cincinnati; OH; 45252; USA
| | - M. J. Flagler
- The Procter & Gamble Company; Sharon Woods Innovation Center; 11511 Reed Hartman Highway; Cincinnati; OH; 45241; USA
| | - J. Hao
- The Procter & Gamble Company; Sharon Woods Innovation Center; 11511 Reed Hartman Highway; Cincinnati; OH; 45241; USA
| | - V. Chechik
- Department of Chemistry; University of York; Heslington; York; YO10 5DD; UK
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Shahab U, Ahmad S, Dixit K, Habib S, Alam K, Ali A. Hydroxyl radical modification of collagen type II increases its arthritogenicity and immunogenicity. PLoS One 2012; 7:e31199. [PMID: 22319617 PMCID: PMC3272010 DOI: 10.1371/journal.pone.0031199] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2011] [Accepted: 01/03/2012] [Indexed: 11/19/2022] Open
Abstract
Background The oxidation of proteins by endogenously generated free radicals causes structural modifications in the molecules that lead to generation of neo-antigenic epitopes that have implications in various autoimmune disorders, including rheumatoid arthritis (RA). Collagen induced arthritis (CIA) in rodents (rats and mice) is an accepted experimental model for RA. Methodology/Principal Findings Hydroxyl radicals were generated by the Fenton reaction. Collagen type II (CII) was modified by •OH radical (CII-OH) and analysed by ultraviolet-visible (UV-VIS), fluorescence and circular dichroism (CD) spectroscopy. The immunogenicity of native and modified CII was checked in female Lewis rats and specificity of the induced antibodies was ascertained by enzyme linked immunosorbent assay (ELISA). The extent of CIA was evaluated by visual inspection. We also estimated the oxidative and inflammatory markers in the sera of immunized rats. A slight change in the triple helical structure of CII as well as fragmentation was observed after hydroxyl radical modification. The modified CII was found to be highly arthritogenic and immunogenic as compared to the native form. The CII-OH immunized rats exhibited increased oxidative stress and inflammation as compared to the CII immunized rats in the control group. Conclusions/Significance Neo-antigenic epitopes were generated on •OH modified CII which rendered it highly immunogenic and arthritogenic as compared to the unmodified form. Since the rodent CIA model shares many features with human RA, these results illuminate the role of free radicals in human RA.
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Affiliation(s)
- Uzma Shahab
- Department of Biochemistry, Faculty of Medicine, J.N. Medical College, Aligarh Muslim University, Aligarh, India
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Acute versus long-term effects of 6-hydroxydopamine on oxidative stress and dopamine depletion in the striatum of mice. J Neurosci Methods 2011; 202:128-36. [DOI: 10.1016/j.jneumeth.2011.07.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2011] [Revised: 07/04/2011] [Accepted: 07/07/2011] [Indexed: 01/07/2023]
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48
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Liang YD, Yu CX. Determination of berberine in pharmaceutical preparations using acidic hydrogen peroxide-nitrite chemiluminescence system. Drug Test Anal 2011; 5:150-5. [DOI: 10.1002/dta.282] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2010] [Revised: 02/14/2011] [Accepted: 02/16/2011] [Indexed: 11/05/2022]
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49
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Chang ET, Canchola AJ, Clarke CA, Lu Y, West DW, Bernstein L, Wang SS, Horn-Ross PL. Dietary phytocompounds and risk of lymphoid malignancies in the California Teachers Study cohort. Cancer Causes Control 2011; 22:237-49. [PMID: 21107674 PMCID: PMC3074494 DOI: 10.1007/s10552-010-9692-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2010] [Accepted: 11/08/2010] [Indexed: 12/01/2022]
Abstract
OBJECTIVE We examined whether dietary intake of isoflavones, lignans, isothiocyanates, antioxidants, or specific foods rich in these compounds is associated with reduced risk of B-cell non-Hodgkin lymphoma (NHL), multiple myeloma (MM), or Hodgkin lymphoma (HL) in a large, prospective cohort of women. METHODS Between 1995-1996 and 31 December 2007, among 110,215 eligible members of the California Teachers Study cohort, 536 women developed incident B-cell NHL, 104 developed MM, and 34 developed HL. Cox proportional hazards regression, with age as the time scale, was used to estimate adjusted rate ratios (RRs) with 95% confidence intervals (CIs) for risk of lymphoid malignancies. RESULTS Weak inverse associations with risk of diffuse large B-cell lymphoma were observed for isothiocyanates (RR for ≥12.1 vs. <2.7 mcM/day = 0.67, 95% CI: 0.43-1.05) and an antioxidant index measuring hydroxyl radical absorbance capacity (RR for ≥2.2 vs. <0.9 μM Trolox equiv/g/day = 0.68, 95% CI: 0.42-1.10; p (trend) = 0.08). Risk of other NHL subtypes, overall B-cell NHL, MM, or HL was not generally associated with dietary intake of isoflavones, lignans, isothiocyanates, antioxidants, or major food sources of these compounds. CONCLUSIONS Isoflavones, lignans, isothiocyanates, and antioxidant compounds are not associated with risk of most B-cell malignancies, but some phytocompounds may decrease the risk of selected subtypes.
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Affiliation(s)
- Ellen T Chang
- Cancer Prevention Institute of California, Fremont, 94538, USA.
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50
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Inhibition of renal gluconeogenesis contributes to hypoglycaemic action of NADPH oxidase inhibitor, apocynin. Chem Biol Interact 2011; 189:119-26. [DOI: 10.1016/j.cbi.2010.09.033] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2010] [Accepted: 09/30/2010] [Indexed: 12/14/2022]
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