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Han J, Yu Y, Wang G, Gao X, Geng L, Sun J, Zhang M, Meng X, Li F, Shi C, Sun X, Guo Y, Ahmed MBM. Ultrasensitive electrochemiluminescence aptasensor based on ABEI reduced silver nanoparticles for the detection of profenofos. Sci Total Environ 2022; 844:157184. [PMID: 35803425 DOI: 10.1016/j.scitotenv.2022.157184] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 06/27/2022] [Accepted: 07/01/2022] [Indexed: 06/15/2023]
Abstract
An ultrasensitive electrochemiluminescence (ECL) aptasensor for detection of profenofos was constructed by the reducibility and chemiluminescence property of N-(aminobutyl)-N-(ethylisoluminol) (ABEI). ABEI was used to reduce silver nitrate (AgNO3) to silver nanoparticles (AgNPs), which could be adsorbed on the lattice of graphene oxide (GO) to form ABEI-AgNPs-GO complex. This compound could achieve excellent luminescence. The aptamer (Apt) modified (5') by sulfhydryl groups could be immobilized on AgNPs to capture profenofos. When profenofos was present, the ECL signal of the aptasensor would be weakened. To further demonstrate the successful construction of the aptasensor, cyclic voltammetry tests were performed on an electrochemical workstation and an ECL analyzer, respectively. The standard curve and specificity experiment both showed that the sensor had the advantages of low limit of detection (LOD) and good specificity. Under the optimal conditions, the aptasensor had a good linear response for profenofos in the range of 1 × 10-1-1 × 104 ng/mL. It also had a LOD of 6.7 × 10-2 ng/mL and a correlation coefficient (R2) of 0.9991. The aptasensor had been successfully applied to the detection of profenofos in vegetables. The recovery range of the proposed ECL aptasensor was 98 % ~ 107.4 %.
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Affiliation(s)
- Jie Han
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No. 266 Xincun Xilu, Zibo, Shandong 255049, China; Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No. 266 Xincun Xilu, Zibo, Shandong 255049, China; Zibo City Key Laboratory of Agricultural Product Safety Traceability, No. 266 Xincun Xilu, Zibo, Shandong 255049, China; Information Technology Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Yanyang Yu
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No. 266 Xincun Xilu, Zibo, Shandong 255049, China; Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No. 266 Xincun Xilu, Zibo, Shandong 255049, China; Zibo City Key Laboratory of Agricultural Product Safety Traceability, No. 266 Xincun Xilu, Zibo, Shandong 255049, China
| | - Guanjie Wang
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No. 266 Xincun Xilu, Zibo, Shandong 255049, China; Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No. 266 Xincun Xilu, Zibo, Shandong 255049, China; Zibo City Key Laboratory of Agricultural Product Safety Traceability, No. 266 Xincun Xilu, Zibo, Shandong 255049, China
| | - Xiaolin Gao
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No. 266 Xincun Xilu, Zibo, Shandong 255049, China; Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No. 266 Xincun Xilu, Zibo, Shandong 255049, China; Zibo City Key Laboratory of Agricultural Product Safety Traceability, No. 266 Xincun Xilu, Zibo, Shandong 255049, China
| | - Lingjun Geng
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No. 266 Xincun Xilu, Zibo, Shandong 255049, China; Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No. 266 Xincun Xilu, Zibo, Shandong 255049, China; Zibo City Key Laboratory of Agricultural Product Safety Traceability, No. 266 Xincun Xilu, Zibo, Shandong 255049, China
| | - Jiashuai Sun
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No. 266 Xincun Xilu, Zibo, Shandong 255049, China; Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No. 266 Xincun Xilu, Zibo, Shandong 255049, China; Zibo City Key Laboratory of Agricultural Product Safety Traceability, No. 266 Xincun Xilu, Zibo, Shandong 255049, China
| | - Mei Zhang
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No. 266 Xincun Xilu, Zibo, Shandong 255049, China; Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No. 266 Xincun Xilu, Zibo, Shandong 255049, China; Zibo City Key Laboratory of Agricultural Product Safety Traceability, No. 266 Xincun Xilu, Zibo, Shandong 255049, China
| | - Xiaoya Meng
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No. 266 Xincun Xilu, Zibo, Shandong 255049, China; Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No. 266 Xincun Xilu, Zibo, Shandong 255049, China; Zibo City Key Laboratory of Agricultural Product Safety Traceability, No. 266 Xincun Xilu, Zibo, Shandong 255049, China
| | - Falan Li
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No. 266 Xincun Xilu, Zibo, Shandong 255049, China; Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No. 266 Xincun Xilu, Zibo, Shandong 255049, China; Zibo City Key Laboratory of Agricultural Product Safety Traceability, No. 266 Xincun Xilu, Zibo, Shandong 255049, China
| | - Ce Shi
- Information Technology Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Xia Sun
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No. 266 Xincun Xilu, Zibo, Shandong 255049, China; Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No. 266 Xincun Xilu, Zibo, Shandong 255049, China; Zibo City Key Laboratory of Agricultural Product Safety Traceability, No. 266 Xincun Xilu, Zibo, Shandong 255049, China.
| | - Yemin Guo
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No. 266 Xincun Xilu, Zibo, Shandong 255049, China; Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No. 266 Xincun Xilu, Zibo, Shandong 255049, China; Zibo City Key Laboratory of Agricultural Product Safety Traceability, No. 266 Xincun Xilu, Zibo, Shandong 255049, China.
| | - Mohamed Bedair Mohamed Ahmed
- Food Toxicology and Contaminants Dept., Division of Food Industries and Nutrition, National Research Centre, 33 El-Bohouth St., Dokki, Cairo 12622, Egypt
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Schumann S, Kaiser A, Nicoletti F, Mangano K, Fagone P, van Wijk E, Yan Y, Schulz P, Ludescher B, Niedermaier M, von Wegerer J, Rauch P, Setz C, Schubert U, Brysch W. Immune-Modulating Drug MP1032 with SARS-CoV-2 Antiviral Activity In Vitro: A potential Multi-Target Approach for Prevention and Early Intervention Treatment of COVID-19. Int J Mol Sci 2020; 21:E8803. [PMID: 33233817 PMCID: PMC7699954 DOI: 10.3390/ijms21228803] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 11/18/2020] [Accepted: 11/19/2020] [Indexed: 01/08/2023] Open
Abstract
At least since March 2020, the severe acute respiratory syndrome coronavirus type 2 (SARS-CoV-2) pandemic and the multi-organ coronavirus disease 2019 (COVID-19) are keeping a firm grip on the world. Although most cases are mild, older patients and those with co-morbidities are at increased risk of developing a cytokine storm, characterized by a systemic inflammatory response leading to acute respiratory distress syndrome and organ failure. The present paper focuses on the small molecule MP1032, describes its mode of action, and gives rationale why it is a promising option for the prevention/treatment of the SARS-CoV-2-induced cytokine storm. MP1032 is a phase-pure anhydrous polymorph of 5-amino-2,3-dihydro-1,4-phthalazinedione sodium salt that exhibits good stability and bioavailability. The physiological action of MP1032 is based on a multi-target mechanism including localized, self-limiting reactive oxygen species (ROS) scavenging activities that were demonstrated in a model of lipopolysaccharide (LPS)-induced joint inflammation. Furthermore, its immune-regulatory and PARP-1-modulating properties, coupled with antiviral effects against SARS-CoV-2, have been demonstrated in various cell models. Preclinical efficacy was elucidated in LPS-induced endotoxemia, a model with heightened innate immune responses that shares many similarities to COVID-19. So far, during oral clinical development with three-month daily administrations, no serious adverse drug reactions occurred, highlighting the outstanding safety profile of MP1032.
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Affiliation(s)
- Sara Schumann
- MetrioPharm Deutschland GmbH, Am Borsigturm 100, 13507 Berlin, Germany; (A.K.); (P.S.); (B.L.); (M.N.); (J.v.W.)
| | - Astrid Kaiser
- MetrioPharm Deutschland GmbH, Am Borsigturm 100, 13507 Berlin, Germany; (A.K.); (P.S.); (B.L.); (M.N.); (J.v.W.)
| | - Ferdinando Nicoletti
- Department of Biomedical and Biotechnological Sciences, University of Catania, 95123 Catania, Italy; (F.N.); (K.M.); (P.F.)
| | - Katia Mangano
- Department of Biomedical and Biotechnological Sciences, University of Catania, 95123 Catania, Italy; (F.N.); (K.M.); (P.F.)
| | - Paolo Fagone
- Department of Biomedical and Biotechnological Sciences, University of Catania, 95123 Catania, Italy; (F.N.); (K.M.); (P.F.)
| | - Eduard van Wijk
- Meluna Research, Department of Biophotonics, Koppelsedijk 1A, 4191 LC Geldermalsen, The Netherlands; (E.v.W.); (Y.Y.)
| | - Yu Yan
- Meluna Research, Department of Biophotonics, Koppelsedijk 1A, 4191 LC Geldermalsen, The Netherlands; (E.v.W.); (Y.Y.)
| | - Petra Schulz
- MetrioPharm Deutschland GmbH, Am Borsigturm 100, 13507 Berlin, Germany; (A.K.); (P.S.); (B.L.); (M.N.); (J.v.W.)
| | - Beate Ludescher
- MetrioPharm Deutschland GmbH, Am Borsigturm 100, 13507 Berlin, Germany; (A.K.); (P.S.); (B.L.); (M.N.); (J.v.W.)
| | - Michael Niedermaier
- MetrioPharm Deutschland GmbH, Am Borsigturm 100, 13507 Berlin, Germany; (A.K.); (P.S.); (B.L.); (M.N.); (J.v.W.)
| | - Joerg von Wegerer
- MetrioPharm Deutschland GmbH, Am Borsigturm 100, 13507 Berlin, Germany; (A.K.); (P.S.); (B.L.); (M.N.); (J.v.W.)
| | - Pia Rauch
- Institute of Virology, Friedrich-Alexander University Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany; (P.R.); (C.S.); (U.S.)
| | - Christian Setz
- Institute of Virology, Friedrich-Alexander University Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany; (P.R.); (C.S.); (U.S.)
| | - Ulrich Schubert
- Institute of Virology, Friedrich-Alexander University Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany; (P.R.); (C.S.); (U.S.)
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Wu H, Zhao M, Li J, Zhou X, Yang T, Zhao D, Liu P, Ju H, Cheng W, Ding S. Novel Protease-Free Long-Lasting Chemiluminescence System Based on the Dox-ABEI Chimeric Magnetic DNA Hydrogel for Ultrasensitive Immunoassay. ACS Appl Mater Interfaces 2020; 12:47270-47277. [PMID: 32975407 DOI: 10.1021/acsami.0c14188] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Most of chemiluminescence (CL) substrates exhibit the flash-type light emission. Therefore, the long-lasting CL system is always the crown in the field of CL-based analysis methodology. In this work, we constructed a Dox-ABEI chimeric magnetic DNA hydrogel (MDH) as a novel protease-free long-lasting CL reaction system. The functional MDH can transform flash-type ABEI/H2O2/CO2+ reaction into a glow-type CL system because of its block effect on delaying the diffusion rate of co-reactants, making the CL reaction gradually occur. More importantly, the functional MDH possessed the advantages of biocompatibility and controllability and could be well-designed to incorporate different biosensing strategies. Subsequently, we established a functional MDH-based long-lasting CL immunoassay system for ultrasensitive and highly specific detection of d-dimer and fibrin degradation products (FDPs). The designed CL immunoassay can detect d-dimer and FDP down to 53.7 and 31.6 fg/mL, respectively, with a wide line ranging from 100 fg/mL to 100 ng/mL, which was superior to the previously reported CL biosensing strategies. Moreover, benefiting from the magnetic separation of MDH and excellent CL performance, the developed immunoassaying method was successfully applied in the detection of clinical samples, which showed a close correlation with clinical reference technology. Thus, this functional MDH proved to be an excellent long-lasting CL system and a potential technical platform for clinical bioanalysis applications.
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Affiliation(s)
- Haiping Wu
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, China
| | - Min Zhao
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, China
| | - Jia Li
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, China
| | - Xiaoyan Zhou
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, China
| | - Tiantian Yang
- The Center for Clinical Molecular Medical Detection, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Dezhang Zhao
- College of Pharmacy, Chongqing Medical University, Chongqing 400016, P. R. China
| | - Ping Liu
- Bioscience (Tianjin) Diagnostic Technology CO., LTD., Tianjin 300399, China
| | - Huangxian Ju
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Wei Cheng
- The Center for Clinical Molecular Medical Detection, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Shijia Ding
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, China
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Li F, Liu Y, Li Z, Li Q, Liu X, Cui H. Cu(II)-Regulated On-Site Assembly of Highly Chemiluminescent Multifunctionalized Carbon Nanotubes for Inorganic Pyrophosphatase Activity Determination. ACS Appl Mater Interfaces 2020; 12:2903-2909. [PMID: 31851480 DOI: 10.1021/acsami.9b20259] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A novel signal-on chemiluminescence (CL) assay for pyrophosphatase (PPase) activity determination was innovatively developed based on the Cu(II)-regulated on-site assembly of highly chemiluminescent Cu(II), N-(aminobutyl)-N-(ethylisoluminol) (ABEI), gold nanodot, and chitosan multifunctionalized carbon nanotubes (Cu(II)/ABEI-Au/cs-CNTs). First, ABEI-functionalized gold nanodots (ABEI-Au) were assembled on the surface of chitosan-modified carbon nanotubes (cs-CNTs) via the reduction of HAuCl4 with ABEI in a cs-CNT suspension to form ABEI-Au/cs-CNTs. Then, it was found that the catalyst Cu(II) can be selectively, efficiently, and quickly adsorbed onto ABEI-Au/cs-CNTs via the high-affinity interactions between Cu(II) and cs-CNTs to form novel hybrid nanomaterials Cu(II)/ABEI-Au/cs-CNTs. The CL intensity of Cu(II)/ABEI-Au/cs-CNTs was enhanced by about 2 orders of magnitude compared with that of ABEI-Au/cs-CNTs. Furthermore, it was found that in the presence of pyrophosphate ions (PPi), PPi could coordinate with Cu(II) to form a stable PPi-Cu(II) complex and block the assembly of Cu(II)/ABEI-Au/cs-CNTs. After the addition of PPase, PPase could catalyze the hydrolysis of PPi into Pi and release Cu(II) from the PPi-Cu(II) complex. The released free Cu(II) could trigger the on-site assembly of highly chemiluminescent Cu(II)/ABEI-Au/cs-CNTs, resulting in an enhanced CL intensity. The enhanced CL intensity had a good linear relationship with the activity units of PPase ranging from 0.025 to 0.5 U, with a detection limit of 9 mU. The method was employed to monitor the PPase inhibitor efficiently. Cu(II)/ABEI-Au/cs-CNTs with excellent CL may also find more applications in the development of novel CL analytical methods.
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Affiliation(s)
- Fang Li
- Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering , Hefei University of Technology , Hefei , Anhui 230026 , P. R. China
- CAS Key Laboratory of Soft Matter Chemistry, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemistry , University of Science and Technology of China , Hefei , Anhui 230026 , P. R. China
| | - Yating Liu
- CAS Key Laboratory of Soft Matter Chemistry, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemistry , University of Science and Technology of China , Hefei , Anhui 230026 , P. R. China
| | - Zimu Li
- Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering , Hefei University of Technology , Hefei , Anhui 230026 , P. R. China
| | - Qi Li
- CAS Key Laboratory of Soft Matter Chemistry, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemistry , University of Science and Technology of China , Hefei , Anhui 230026 , P. R. China
| | - Xiaoying Liu
- CAS Key Laboratory of Soft Matter Chemistry, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemistry , University of Science and Technology of China , Hefei , Anhui 230026 , P. R. China
| | - Hua Cui
- CAS Key Laboratory of Soft Matter Chemistry, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemistry , University of Science and Technology of China , Hefei , Anhui 230026 , P. R. China
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Kuzmenko AV, Kuzmenko VV, Gyaurgiev TA. [Efficiency of immunomodulatotors for complex therapy of chronic recurrent cystitis in women]. Urologiia 2019:9-14. [PMID: 31162894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
INTRODUCTION Currently, chronic recurrent cystitis is one of the most important problems in urology. Considering the role of immune status disorders in the pathogenesis of inflammatory diseases, the use of immunocorrective drugs as part of the complex therapy is of particular relevance. AIM to study the efficiency of therapy for chronic recurrent bacterial cystitis in combination with immunomodulators (Galavit). MATERIALS AND METHODS A total of 60 women with acute stage of chronic recurrent bacterial cystitis were examined. The patients were randomized into 2 groups of 30 patients. In the control group, standard antibiotic therapy was administered. In the treatment group, patients received Galavit in combination with standard therapy. All patients were followed-up on the 1st, 5th and 10th day. Voiding diaries, chronobiological status and pain severity using a 5-point scale were evaluated. In addition, complete blood count, urinalysis, urine culture and enzyme immunoassay for determination of serum level of interleukin (IL) 1, IL-6, tumor necrosis factor (TNF-) were analyzed. A number of recurrences after 3 months of therapy was assessed. RESULTS Complex therapy in combination with Galavit in women with acute stage of chronic bacterial cystitis allows to decrease in desynchronosis by 20%, reduce pain by 2.5 times, frequency of urination by 1.7 times, the number of urgent voids and night urination by 2.4 and 5 times, respectively, by the 5th day of therapy. In the group of patients receiving immunomodulators a significantly more pronounced decrease in the level of IL-1, IL-6, TNF- and CRP was noted. During 3 months of follow-up, there were 2 recurrences in the control group and no recurrences in treatment group (10%). CONCLUSION The use of Galavit in the treatment of women with chronic recurrent bacterial cystitis has pathogenetic basis. A clear advantage of the drug is more rapid relief of symptoms, normalization of laboratory parameters, recovery of chronorhythms and the achievement of clinical remission.
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Affiliation(s)
- A V Kuzmenko
- Department of Urology of FGBOU VO Voronezh State Medical University named after N.N. Burdenko, Voronezh, Russia
| | - V V Kuzmenko
- Department of Urology of FGBOU VO Voronezh State Medical University named after N.N. Burdenko, Voronezh, Russia
| | - T A Gyaurgiev
- Department of Urology of FGBOU VO Voronezh State Medical University named after N.N. Burdenko, Voronezh, Russia
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Abstract
The oxidative burst or the production of reactive oxygen species (ROS) is a typical cellular response of both plants and animals to diverse abiotic and biotic stresses. Mainly, the (re-)active oxygen species include the superoxide anion (O2-), hydrogen peroxide (H2O2), and the hydroxyl radical (OH•). Here, we outline the detection of extracellularly produced ROS in plant leaf pieces using a chemiluminescence-based bioassay with the luminol L-012 as a substrate being oxidized in the presence of ROS. Since this type of assay is in use in many laboratories, e.g., as a readout for activation of plant receptor kinases, we include a discussion on the interpretation of results and points addressing problems with the buffers at suboptimal pH values that negatively influence the chemiluminescence production.
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Affiliation(s)
- Markus Albert
- Center for Plant Molecular Biology, University of Tübingen, Auf der Morgenstelle 32, 72076, Tübingen, Germany.
| | - Ursula Fürst
- Center for Plant Molecular Biology, University of Tübingen, Auf der Morgenstelle 32, 72076, Tübingen, Germany
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Jiang X, Wang H, Wang H, Zhuo Y, Yuan R, Chai Y. Self-enhanced N-(aminobutyl)-N-(ethylisoluminol) derivative-based electrochemiluminescence immunosensor for sensitive laminin detection using PdIr cubes as a mimic peroxidase. Nanoscale 2016; 8:8017-8023. [PMID: 27010575 DOI: 10.1039/c6nr00229c] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Herein, a self-enhanced N-(aminobutyl)-N-(ethylisoluminol) (ABEI) derivative-based electrochemiluminescence (ECL) immunosensor was constructed for the determination of laminin (LN) using PdIr cubes as a mimic peroxidase for signal amplification. Initially, PdIr cubes with efficient peroxidase mimicking properties, large specific surface areas, and good stability and uniformity were synthesized. Then, L-cysteine (L-Cys) and ABEI were immobilized on the PdIr cubes to form the self-enhanced ECL nanocomplex (PdIr-L-Cys-ABEI). In this nanocomplex, PdIr cubes, whose catalytic constant is higher than that of horseradish peroxidase (HRP), could effectively catalyze H2O2 decomposition and thus enhance the ECL intensity of ABEI. Moreover, PdIr cubes can be easily modified with functional groups, which make them adaptable to desired supported platforms. On the other hand, L-Cys as a coreactant of ABEI could effectively enhance the luminous efficiency due to the intramolecular ECL reaction which could reduce the energy loss between L-Cys and ABEI by giving a shorter electron transfer distance. The developed strategy combined an ABEI derivative as a self-enhanced ECL luminophore and PdIr cubes as a mimic peroxidase, resulting in a significantly enhanced ECL signal output. Also, the strategy showed high sensitivity and selectivity for LN, which suggested that our new approach could be potentially applied in monitoring different proteins.
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Affiliation(s)
- Xinya Jiang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China.
| | - Huijun Wang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China.
| | - Haijun Wang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China.
| | - Ying Zhuo
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China.
| | - Ruo Yuan
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China.
| | - Yaqin Chai
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China.
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Hao L, Duan N, Wu S, Xu B, Wang Z. Chemiluminescent aptasensor for chloramphenicol based on N-(4-aminobutyl)-N-ethylisoluminol-functionalized flower-like gold nanostructures and magnetic nanoparticles. Anal Bioanal Chem 2015. [PMID: 26297462 DOI: 10.1007/s00216-015-8957-y/metrics] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/14/2023]
Abstract
A novel chemiluminescent aptasensor for the highly sensitive detection of chloramphenicol (CAP) in milk was successfully developed using biotinylated CAP aptamer-functionalized magnetic nanoparticles (MNPs) as capture probes and thiolated hybridized complementary strand-modified N-(4-aminobutyl)-N-ethylisoluminol (ABEI)-functionalized flower-like gold nanostructures (AuNFs) as signal probes. P-iodophenol (PIP) was also added to form an ABEI-H2O2-PIP steady-state chemiluminescence (CL) system. Based on a competitive format, the CL intensity was negatively correlated with the concentration of CAP in the range of 0.01-0.20 ng/mL and the detection limit was 0.01 ng/mL in buffer and 1 ng/mL in milk. The proposed method was successfully applied to measure CAP in milk samples and compared to a commercial ELISA method. The high sensitivity of AuNFs, excellent selectivity and stability of aptamers, and good overall stability of the chemiluminescent bioassay with magnetic separation make them a promising approach for the detection of small molecular illegal additives. Additionally, the high sensitivity, easy operation, and good reproducibility exhibited by the stable chemiluminescent bioassay demonstrate its applicability for the trace detection of CAP in applications, such as animal husbandry.
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Affiliation(s)
- Liling Hao
- State Key Laboratory of Food Science & Technology, Synergetic Innovation Center of Food Safety & Nutrition, School of Food Science & Technology, Jiangnan University, Wuxi, 214122, China
| | - Nuo Duan
- State Key Laboratory of Food Science & Technology, Synergetic Innovation Center of Food Safety & Nutrition, School of Food Science & Technology, Jiangnan University, Wuxi, 214122, China
| | - Shijia Wu
- State Key Laboratory of Food Science & Technology, Synergetic Innovation Center of Food Safety & Nutrition, School of Food Science & Technology, Jiangnan University, Wuxi, 214122, China
| | - Baocai Xu
- State Key Laboratory of Meat Processing & Quality Control, Yurun Group, Nanjing, 210041, China
| | - Zhouping Wang
- State Key Laboratory of Food Science & Technology, Synergetic Innovation Center of Food Safety & Nutrition, School of Food Science & Technology, Jiangnan University, Wuxi, 214122, China.
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Stepan N, Denysenko O. [Evolution of oxidant-antioxidant homeostasis in patients with eczema treated using different methods]. Georgian Med News 2015:39-45. [PMID: 26042446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
to study the evolution of the oxidant-antioxidant homeostasis indices in patients with eczema using various methods of treating dermatosis. The study involved 63 patients with eczema (34 - males, 28 - females), aged 18-67 years, who were determined indices of pro- and antioxidant systems of blood. Patients with eczema were divided into 3 groups that were prescribed different treatments: the first comparative group (21 patients) - received a standard therapy; the second comparative group (20 patients) - had a standard therapy and additionally an antioxidant preparation "Mexidol", the third (basic group) - 22 patients, who were prescribed a complex therapy with a combination of two drugs with antioxidant effect: "Mexidol" and "Galavit." It was established that multimodality therapy for eczema while using two drugs with antioxidant action ("Mexidol", "Galavit") contributes to the most significant positive dynamics and normalization of the studied parameters of oxidant-antioxidant homeostasis of patients compared to a standard therapy of dermatosis or its combination with antioxidant preparation "Mexidol".
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Affiliation(s)
- N Stepan
- Bukovinian State Medical University, Chernovtsy, Ukraine
| | - O Denysenko
- Bukovinian State Medical University, Chernovtsy, Ukraine
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10
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Wang N, Wang XC, Ma X. Characteristics of concentration-inhibition curves of individual chemicals and applicability of the concentration addition model for mixture toxicity prediction. Ecotoxicol Environ Saf 2015; 113:176-182. [PMID: 25499050 DOI: 10.1016/j.ecoenv.2014.12.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2014] [Revised: 11/28/2014] [Accepted: 12/02/2014] [Indexed: 06/04/2023]
Abstract
The concentration addition (CA) model has been widely applied to predict mixture toxicity. However, its applicability is difficult to evaluate due to the complexity of interactions among substances. Considering that the concentration-response curve (CRC) of each component of the mixture is closely related to the prediction of mixture toxicity, mathematical treatments were used to derive a characteristic index kECx (k was the slope of the tangent line of a CRC at concentration ECx). The implication is that the CA model would be applicable for predicting the mixture toxicity only when chemical components have similar kECx in the whole or part of the concentration range. For five selected chemicals whose toxicity was detected using luminescent bacteria, sodium dodecyl benzene sulfonate (SDBS) showed much higher kECx values than the others and its existence in the binary mixtures brought about overestimation of the mixture toxicity with the CA model. The higher the mass ratio of SDBS in a multi-mixture was, the more the toxicity prediction deviated from measurements. By applying the method proposed in this study to analyze some published data, it is confirmed that some components having significantly different kECx values from the other components could explain the large deviation of the mixture toxicity predicted by the CA model.
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Affiliation(s)
- Na Wang
- Key Laboratory of Northwest Water Resource, Environment and Ecology, Ministry of Education, School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055 China
| | - Xiaochang C Wang
- Key Laboratory of Northwest Water Resource, Environment and Ecology, Ministry of Education, School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055 China.
| | - Xiaoyan Ma
- Key Laboratory of Northwest Water Resource, Environment and Ecology, Ministry of Education, School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055 China
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11
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Abstract
Hydrogen sulfide (H2S) has emerged as an important biological signaling molecule. To better understand the multifaceted biological roles of H2S, the development of selective and sensitive biocompatible assays for H2S is becoming increasingly important. Motivated by these challenges, our laboratory is developing new methods to further detect and monitor biological H2S. Here, we describe in detail our recent advances in the development and the use of chemiluminescence-based H2S sensors to assist other investigators with use of these chemical tools. We highlight the use of these tools use by displaying their selectivity and high sensitivity toward H2S and provide examples of assays we have developed to detect enzymatically produced H2S.
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Affiliation(s)
- T Spencer Bailey
- Department of Chemistry and Biochemistry, Institute of Molecular Biology, Materials Science Institute, University of Oregon, Eugene, Oregon, USA
| | - Michael D Pluth
- Department of Chemistry and Biochemistry, Institute of Molecular Biology, Materials Science Institute, University of Oregon, Eugene, Oregon, USA.
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12
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Driyanska VE, Drannik GN, Stepanova NM, Lebed LO, Kruglikov VT, Driyanska VV, Lavrenchuk OV, Kalinina NA, Gaisenuk FZ. [POSITIVE EFFECTS OF MODERN IMMUNOCORRECTION ACCORDING TO THE ANALYSIS OF CYTOKINES AND SLPI IN PATIENTS WITH PYELONEPHRITIS]. Lik Sprava 2014:45-56. [PMID: 26638467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The peculiarities of cytokines as compounds of immunogenesis are shown in the patients having acute (A) and chronic (Ch) pyelonephritis (PN). The combination of antibacterial therapy with Nukleinat and Galavit promotes the positive changes of cytokin-producing ability of immunocompetent cells and decrease in the level of proinflammation cytokines in blood and urine, secretory leucocyte protease inhibitor (SLPI) in urine. In children with PN and adult patients with diagnostically elevated titres of antibodies (IgG) to Herpes simplex virus, Cytomegalovirus are shown the positive effects of Kanephron® H and Proteflazidum, accordingly. Clinico-immunological effects of immunomodulators testify to the expediency of this usage in complex therapy with the aim to modulate the cytokine link of immunity for improvement of the effective treatment in APN and the protection against aggravation of kidney functioning in ChPN.
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13
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Li F, Liu Y, Zhuang M, Zhang H, Liu X, Cui H. Biothiols as chelators for preparation of N-(aminobutyl)-N-(ethylisoluminol)/Cu(2+) complexes bifunctionalized gold nanoparticles and sensitive sensing of pyrophosphate ion. ACS Appl Mater Interfaces 2014; 6:18104-18111. [PMID: 25275558 DOI: 10.1021/am504985w] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In this work, chemiluminescence (CL) reagent and catalyst metal ion complexes bifunctionalized gold nanoparticles (BF-AuNPs) with high CL efficiency were synthesized via an improved synthesis strategy. Biothiols, such as cysteine (Cys), cysteinyl-glycine (Cys-Gly), homocysteine (Hcy), and glutathione (GSH), instead of 2-[bis[2-[carboxymethyl-[2-oxo-2-(2-sulfanylethylamino)ethyl]amino]ethyl]amino]acetic acid (DTDTPA), were used as new chelators. N-(aminobutyl)-N-(ethylisoluminol) (ABEI) was used as a model of CL reagents and Cu(2+) as a model of metal ion. In this strategy, biothiols were first grafted on the surface of ABEI-AuNPs by Au-S bond. Then, Cu(2+) was captured onto the surface of ABEI-AuNPs by the coordination reaction to form BF-AuNPs. The CL intensity of Cu(2+)-Cys/ABEI-AuNPs was 1 order of magnitude higher than that of DTDTPA/Cu(2+)-ABEI-AuNPs synthesized by the previous work. Moreover, strong CL emission of Cu(2+)-Cys/ABEI-AuNPs was also observed in neutral pH conditions. In addition, the present BF-AuNPs synthesis method exhibited advantages over the previous method in CL efficiency, simplicity, and synthetic rate. Finally, by virtue of Cu(2+)-Cys/ABEI-AuNPs as a platform, a simple CL chemosensor for the sensitive and selective detection of pyrophosphate ion (PPi) was established based on the competitive coordination interactions of Cu(2+) between Cys and PPi. The method exhibited a wide detection range from 10 nM to 100 μM, with a low detection limit of 3.6 nM. The chemosensor was successfully applied to the detection of PPi in human plasma samples. It is of great application potential in clinical analysis. This work reveals that BF-AuNPs could be used as ideal nanointerface for the development of novel analytical methods.
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Affiliation(s)
- Fang Li
- CAS Key Laboratory of Soft Matter Chemistry, Department of Chemistry, University of Science and Technology of China , 96 Jinzhai Road, Hefei, Anhui 230026, China
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Ermishina VI, Kazeko NI, Berdichevskiĭ VB, Mendelian SS, Il'iasov SZ. [Clinical-biochemical and immunological parameters in the diagnosis and treatment of chronic pyelonephritis on the background of intercurrent diseases]. Urologiia 2014:14-18. [PMID: 25807752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Studies have shown that complicated chronic pyelonephritis in the active phase is characterized by structural and functional instability cytomembranes and decreased immunological resistance of the patient man. Supplement standard antibiotic treatment with ozone therapy antioxidant immunomodulation drug thus received immunobiochemical study.
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Zhang H, Cui H. High-density assembly of chemiluminescence functionalized gold nanodots on multiwalled carbon nanotubes and their application as biosensing platforms. Nanoscale 2014; 6:2563-2566. [PMID: 24457618 DOI: 10.1039/c3nr05574d] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A one-step strategy was developed for high-density assembly of N-(aminobutyl)-N-(ethylisoluminol) (ABEI) functionalized gold nanodots onto the sidewalls of chitosan-grafted multiwalled carbon nanotubes (cs-MWCNTs) via the reduction of HAuCl4 with ABEI in the presence of cs-MWCNTs, resulting in novel hybrid nanomaterials with excellent chemiluminescence and electrochemiluminescence properties.
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Affiliation(s)
- Hongli Zhang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China.
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16
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Zielonka J, Lambeth JD, Kalyanaraman B. On the use of L-012, a luminol-based chemiluminescent probe, for detecting superoxide and identifying inhibitors of NADPH oxidase: a reevaluation. Free Radic Biol Med 2013; 65:1310-1314. [PMID: 24080119 PMCID: PMC4274999 DOI: 10.1016/j.freeradbiomed.2013.09.017] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2013] [Revised: 09/20/2013] [Accepted: 09/20/2013] [Indexed: 01/11/2023]
Abstract
L-012, a luminol-based chemiluminescent (CL) probe, is widely used in vitro and in vivo to detect NADPH oxidase (Nox)-derived superoxide (O2(*-)) and identify Nox inhibitors. Yet understanding of the free radical chemistry of the L-012 probe is still lacking. We report that peroxidase and H2O2 induce superoxide dismutase (SOD)-sensitive, L-012-derived CL in the presence of oxygen. O2(*-) alone does not react with L-012 to emit luminescence. Self-generated O2(*-) during oxidation of L-012 and luminol analogs artifactually induce CL inhibitable by SOD. These aspects make assays based on luminol analogs less than ideal for specific detection and identification of O2(*-) and NOX inhibitors.
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Affiliation(s)
- Jacek Zielonka
- Department of Biophysics and Free Radical Research Center, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - J David Lambeth
- Department of Pathology and Laboratory Medicine, Emory University, Atlanta, GA 30322, USA
| | - Balaraman Kalyanaraman
- Department of Biophysics and Free Radical Research Center, Medical College of Wisconsin, Milwaukee, WI 53226, USA.
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17
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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18
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Abidov MT, Danilova IG, Brykina IA, Yushkov BG, Pashnina IA. Reaction of CD117+ cells to renal lesion under conditions of phagocytic mononuclear system stimulation. Bull Exp Biol Med 2012; 153:61-3. [PMID: 22808495 DOI: 10.1007/s10517-012-1643-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The content of CD117(+)cells in the kidneys and CD45(low)CD117(+)cells in the bone marrow and blood of mice were studied after partial nephrectomy and under conditions of macrophage stimulation with 3-aminophthalhydrazide. The counts of tubular CD117(+)epitheliocytes sharply increased and the content of CD45(low)CD117(+)cells in the bone marrow decreased after renal damage. Injection of 3-aminophthalhydrazide stimulated the expression of CD117 by renal epitheliocytes and led to reduction of CD45(low)CD117(+)cell counts in the bone marrow and blood. Macrophages stimulated proliferative processes in the kidney and differentiation of stem cells in the bone marrow due to synergic effects of their cytokines and stem cell factor.
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Affiliation(s)
- M T Abidov
- Institute of Immunology and Physiology, Ural Division of Russian Academy of Sciences, Ekaterinburg, Russia
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19
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Shekhovtsova OV, Shatalova EV. [The mechanism of formation of hospital strains of hospital-acquired infections agents and modes of prevention]. Klin Lab Diagn 2012:58-61. [PMID: 22988807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The article deals with the mechanisms of formation of hospital strains through immunocompromized organism analyzed using the clinically significant signs. It is established that application of galavitum with lidocaine results in the saprophitization of agents in organism hence preventing the formation of strains with "hospital" signs.
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20
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Abstract
Inflammatory diseases are associated with the accumulation of activated inflammatory cells, particularly polymorphonuclear neutrophils (PMNs), which release reactive oxygen species (ROS) to eradicate foreign bodies and microorganisms. To assess the location and extent of localized inflammatory responses, L-012, a highly sensitive chemiluminescent probe, was employed to noninvasively monitor the production of ROS. We found that L-012-associated chemiluminescence imaging can be used to identify and to quantify the extent of inflammatory responses. Furthermore, regardless of differences among animal models, there is a good linear relationship between chemiluminescence intensity and PMN numbers surrounding inflamed tissue. Depletion of PMNs substantially diminished L-012-associated chemiluminescence in vivo. Finally, L-012-associated chemiluminescence imaging was found to be a powerful tool for assessing implant-mediated inflammatory responses by measuring chemiluminescence intensity at the implantation sites. These results support the use of L-012 for monitoring the kinetics of inflammatory responses in vivo via the detection and quantification of ROS production.
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Affiliation(s)
| | | | | | - Liping Tang
- Correspondence to Liping Tang, Ph.D., Bioengineering Department, University of Texas at Arlington, P.O. Box 19138, Arlington, TX 76019-0138. Phone: 817-272-6075; fax: 817-272-2251;
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21
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Chai Y, Tian D, Cui H. Electrochemiluminescence biosensor for the assay of small molecule and protein based on bifunctional aptamer and chemiluminescent functionalized gold nanoparticles. Anal Chim Acta 2011; 715:86-92. [PMID: 22244171 DOI: 10.1016/j.aca.2011.12.006] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2011] [Revised: 11/20/2011] [Accepted: 12/05/2011] [Indexed: 11/18/2022]
Abstract
An electrochemiluminescence (ECL) biosensor for simultaneous detection of adenosine and thrombin in one sample based on bifunctional aptamer and N-(aminobutyl)-N-(ethylisoluminol) functionalized gold nanoparticles (ABEI-AuNPs) was developed. A streptavidin coated gold nanoparticles modified electrode was utilized to immobilize biotinylated bifunctional aptamer (ATA), which consisted of adenosine and thrombin aptamer. The ATA performed as recognition element of capture probe. For adenosine detection, ABEI-AuNPs labeled hybridization probe with a partial complementary sequence of ATA reacted with ATA, leading to a strong ECL response of N-(aminobutyl)-N-(ethylisoluminol) enriched on ABEI-AuNPs. After recognition of adenosine, the hybridization probe was displaced by adenosine and ECL signal declined. The decrease of ECL signal was in proportion to the concentration of adenosine over the range of 5.0×10(-12)-5.0×10(-9) M with a detection limit of 2.2×10(-12) M. For thrombin detection, thrombin was assembled on ATA modified electrode via aptamer-target recognition, another aptamer of thrombin tagged with ABEI-AuNPs was bounded to another reactive site of thrombin, producing ECL signals. The ECL intensity was linearly with the concentration of thrombin from 5×10(-14)M to 5×10(-10) M with a detection limit of 1.2×10(-14) M. In the ECL biosensor, adenosine and thrombin can be detected when they coexisted in one sample and a multi-analytes assay was established. The sensitivity of the present biosensor is superior to most available aptasensors for adenosine and thrombin. The biosensor also showed good selectivity towards the targets. Being challenged in real plasma sample, the biosensor was confirmed to be a good prospect for multi-analytes assay of small molecules and proteins in biological samples.
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Affiliation(s)
- Ying Chai
- CAS Key Laboratory of Soft Matter Chemistry, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, China
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22
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Shatokhin MN, Teodorovich OV, Konoplia AI, Gavriliuk VP, Mavrin MI, Krasnov AV. [Correction of immunometabolic disorders in chronic bacterial prostatitis]. Urologiia 2011:39-42. [PMID: 22279785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Patients with chronic bacterial prostatitis were found to have disorders in blood parameters of complement system activity, neutrophil function and metabolic status. The above disorders are resistant to adequate correction with standard treatment but can be successfully managed with combined use ofimmunomodulators (ferrovir, galavit), antioxidants (mexidol, olifen) and membranoprotectors (phosphogliv, essentiale). Thus, immunometabolic status in chronic prostatitis can be corrected with the above combined treatment.
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Shepet'ko EN, Bychkova NG, Garmash DA, Kurbanov AK. [Efficacy of the immunomodulating therapy in complex treatment of gastric cancer complicated by acute hemorrhage using radical operations]. Klin Khir 2011:15-18. [PMID: 21846027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The results of radical operative treatment of 10 patients, suffering gastric cancer, complicated by an acute hemorrhage, using immunomodulating therapy, were presented. The immunomodulator application have promoted the natural cells-killers cytological activity raising, the tumoral antigens (AG) elimination, as well as to enhance the neutrophils bactericidal and phagocytic activity, the circulating immune complexes (AG+IgG), (AG+IgM) formation and their deducing from an organism.
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Matthews JB, Chen FM, Milward MR, Wright HJ, Carter K, McDonagh A, Chapple ILC. Effect of nicotine, cotinine and cigarette smoke extract on the neutrophil respiratory burst. J Clin Periodontol 2011; 38:208-18. [PMID: 21214612 DOI: 10.1111/j.1600-051x.2010.01676.x] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2023]
Abstract
AIMS To determine the effect of nicotine, cotinine and cigarette smoke extract (CSE) on the neutrophil respiratory burst and their effect on activation of the nuclear factor-κB (NFκB) pathway in oral epithelium. MATERIALS AND METHODS Neutrophils from periodontally healthy individuals were treated with nicotine, cotinine and CSE before stimulation with Fusobacterium nucleatum, IgG-opsonized Staphylococcus aureus and Escherichia coli lipopolysaccharide. Total and extracellular reactive oxygen species (ROS) generation was determined by luminol/isoluminol chemiluminescence. Activation of NFκB in oral epithelial cells was determined by immunocytochemistry. RESULTS Smoke extract alone caused increased neutrophil extracellular isoluminol-dependent chemiluminescence, not detectable with luminol. However, pre-treatment with smoke extract reduced both total and extracellular ROS generation in response to all stimuli. Nicotine and cotinine had no effect on the neutrophil respiratory burst. Smoke extract, nicotine and cotinine did not induce oral epithelial cell NFκB activation. CONCLUSIONS These data demonstrate that smoke extract reduces the ability of neutrophils to generate ROS after stimulation with F. nucleatum and IgG-opsonized S. aureus but, at high concentrations, stimulates extracellular ROS generation. During periodontitis, cigarette smoking may differentially affect neutrophil function, generally preventing elimination of periodontal pathogens but, in heavy smokers, also stimulating ROS release and oxidative stress mediated tissue damage.
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Affiliation(s)
- John B Matthews
- School of Dentistry, Periodontal Research Group, College of Medical and Dental Sciences, The University of Birmingham, Birmingham, UK.
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25
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Mazzei L, García IM, Cacciamani V, Benardón ME, Manucha W. WT-1 mRNA expression is modulated by nitric oxide availability and Hsp70 interaction after neonatal unilateral ureteral obstruction. BIOCELL 2010; 34:121-132. [PMID: 21443142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Wilms tumor gene 1 (wt-1), a key regulator of mesenchymal-epithelial transformation, is downregulated during congenital obstructive nephropathy, leading to apoptosis. There is a functional interaction between WT-1 and inducible nitric oxide synthase (iNOS). In this regard, we reported that after neonatal unilateral ureteral obstruction, rosuvastatin prevents apoptosis through an increase in nitric oxide bioavailability, which in turn is linked to higher Hsp70 expression. Hence, the goal of this study was to determine whether a nitric oxide/Hsp70 interaction is involved in changes in WT-1 mRNA expression after ureteral obstruction. Neonatal rats submitted to experimental ureteral obstruction were treated with either vehicle or rosuvastatin for 14 days. Decreased nitric oxide and iNOS/Hsp70 expression associated with WT-1 low expression was shown in obstructed kidneys. Apoptosis was induced and it was associated with an increased Bax/BcL2 ratio. Conversely, iNOS/Hsp70 upregulation and an increased WT-1 mRNA expression, without an apoptotic response, were observed in the cortex of obstructed kidneys of rosuvastatin-treated rats. Nitric oxide also modulated Hsp70 and WT-1 mRNA expression in MDCK cells. Finally, in vivo experiments with nitric oxide modulators support our hypothesis that WT-1 mRNA expression is associated with nitric oxide level. Results suggest that rosuvastatin may modulate WT-1 mRNA expression through renal nitric oxide bioavailability, preventing neonatal obstruction-induced apoptosis associated with Hsp70 interaction.
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Affiliation(s)
- Luciana Mazzei
- Area de Fisiopatología, Departamento de Patología, Facultad de Ciencias Médicas, Universidad Nacional de Cuyo, Mendoza, Argentina
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26
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Romantsov MG, Sologub TV, Goriacheva LG, Kovalenko SN, Sukhanov DS, Shul'diakov AA, Bondarenko AN, Kovalenko AL, Petrov AI. [Pathogenetically substantiated therapy of patients with virus hepatitis C, quality of life, and the disease outcome risk (clinical survey)]. Antibiot Khimioter 2010; 55:45-55. [PMID: 20695208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The aspects of virus hepatitis C immunopathogenesis are discussed. The main attention is paid to higher production of Th1 cytokines providing active protection of the host from HCV. The up-to-date approaches to the therapy of chronic hepatitis C, described in the literature and the original ones, including the triple therapy with immunomodulators of various mechanisms of action, i.e. cycloferon (injections and tablets), galavit and derinat are presented. The comparative efficacy of the therapy is estimated. Cycloferon is shown to be the drug of choice in the treatment of patients with virus hepatitis addicted to narcotics. The clinical and laboratory efficacy of the metabolic hepatoprotector remaxol with antioxidant activity is described. Its high effictivity and satisfactory tolerability (side effects requiring discontinuation of the drug use were recorded only in 0.3% of the cases), as well as the minimal risk of no biochemical remission after its use allow to conseder remaxol as a highly efficient metabolic hepatoprotector for pathogenetic therapy of chronic hepatitis.
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27
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Kielland A, Blom T, Nandakumar KS, Holmdahl R, Blomhoff R, Carlsen H. In vivo imaging of reactive oxygen and nitrogen species in inflammation using the luminescent probe L-012. Free Radic Biol Med 2009; 47:760-6. [PMID: 19539751 DOI: 10.1016/j.freeradbiomed.2009.06.013] [Citation(s) in RCA: 117] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2008] [Revised: 06/10/2009] [Accepted: 06/11/2009] [Indexed: 10/20/2022]
Abstract
Production of reactive oxygen and nitrogen species (ROS/RNS) is an important part of the inflammatory response, but prolonged elevated levels of ROS/RNS as under chronic inflammation can contribute to the development of disease. Monitoring ROS/RNS in living animals is challenging due to the rapid turnover of ROS/RNS and the limited sensitivity and specificity of ROS/RNS probes. We have explored the use of the chemiluminescent probe L-012 for noninvasive imaging of ROS/RNS production during inflammation in living mice. Various inflammatory conditions were induced, and L-012-dependent luminescence was recorded with an ultrasensitive CCD camera. Strong luminescent signals were observed from different regions of the body corresponding to inflammation. The signal was reduced by administration of the SOD mimetic tempol, the NADPH oxidase inhibitor apocynin, and the inhibitor of nitric oxide synthesis L-NAME, signifying the requirement for the presence of ROS/RNS. Additionally, the L-012 signal was abolished in mice with a mutation in the Ncf1 gene, encoding a protein in the NADPH oxidase complex 2, which generates ROS/RNS during inflammation. In conclusion, L-012 is well distributed in the mouse body and mediates a strong ROS/RNS-dependent luminescent signal in vivo and is useful for monitoring the development and regulation of inflammation in living organisms.
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Affiliation(s)
- Anders Kielland
- Department of Nutrition, Institute of Basic Medical Sciences, The Medical Faculty, University of Oslo, P.O. Box 1046 Blindern, 0316 Oslo, Norway
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Nosal R, Drabikova K, Jancinova V, Moravcova J, Lojek A, Ciz M, Macickova T, Pecivova J. H1-antihistamines and oxidative burst of professional phagocytes. Neuro Endocrinol Lett 2009; 30 Suppl 1:133-136. [PMID: 20027159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 07/13/2009] [Accepted: 09/02/2009] [Indexed: 05/28/2023]
Abstract
OBJECTIVES We analysed and compared the effect of five H1-antihistamines on stimulated oxidative burst at extra- and intracellular level of isolated and stimulated human polymorphonuclear leukocytes. DESIGN Oxidative burst of isolated human neutrophils was studied by means of luminol and isoluminol enhanced chemiluminescence. RESULTS The following rank order of potency for H1-antihistamines to decrease chemiluminescence was evaluated extracellularly: dithiaden> loratadine> chlorpheniramine> brompheniramine> pheniramine and at intracellular site: loratadine> dithiaden. CONCLUSION H1-antihistamines differ substantially according to their chemical structure in suppressing oxidative burst both at extra- and intracellular site of isolated stimulated human neutrophils.
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Affiliation(s)
- Radomir Nosal
- Institute of Experimental Pharmacology and Toxicology, Slovak Academy of Sciences, Bratislava, Slovakia.
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29
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Vel'sher LZ, Gabuniia ZR, Grishina TI, Germanov AB, Biakhov MI, Korobkova LI, Platonov DA, Argun VM, Budnenkov AG, Gens GP. [Galavit-induced change of immunologic parameters in patients with non-small lung cancer]. Vopr Onkol 2009; 55:51-55. [PMID: 19435200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Administration of an immunomodulator, galavit, for stage II-III non-small lung cancer along with standard therapy was followed by immunological vigor improvement by the end of the course. CD3, CD4, IgA, IgM and IgG indices were normal in more than 80% of the study group by day 51 after surgery; CD8, CD20 and HLA-DR--in more than 50%; CD16--in 45.2%. In control, by day 51, normal IgG and HLA-DR levels were reported in 60%. The remaining indices were normal in less than 50%. Our results point to immunological vigor improvement due to use of galavit. The drug is well tolerated, has neither side effects nor toxicity.
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31
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Lin Z, Wu X, Lin X, Xie Z. End-column chemiluminescence detection for pressurized capillary electrochromatographic analysis of norepinephrine and epinephrine. J Chromatogr A 2007; 1170:118-21. [PMID: 17905257 DOI: 10.1016/j.chroma.2007.09.015] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2007] [Revised: 09/02/2007] [Accepted: 09/11/2007] [Indexed: 11/16/2022]
Abstract
A simple and convenient end-column chemiluminescence (CL) detection coupled to pressurized capillary electrochromatography (pCEC) was described. Luminol and N-(4-aminobutyl)-N-ethylisoluminol (ABEI) were adopted as mode compounds to evaluate the feasibility of end-column reactor. Detailed analysis of ABEI revealed that the high sensitivity could be obtained with the reactor. Furthermore, determination of norepinephrine (NE) and epinephrine (EP), which were labeled with ABEI, was accomplished by using the end-column pCEC-CL detection based on ABEI-potassium ferricyanide-alkaline medium CL reaction system. Under the optimum conditions, the detection limit (S/N=3) of NE and EP was 0.08 microM and 0.06 microM, respectively. The proposed method has also been successfully applied to the analysis of adrenaline hydrochloride injection sample.
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Affiliation(s)
- Zian Lin
- Department of Chemistry, Fuzhou University, Fuzhou 350002, China
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32
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Stenfeldt AL, Dahlgren C. An attempt to design an isoluminol-hydrogen peroxidase-amplified CL that measures intracellularly produced H2O2 in phagocytes: sensitivity for H2O2 is not high enough to allow detection. LUMINESCENCE 2007; 22:507-10. [PMID: 17610299 DOI: 10.1002/bio.990] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
A technique was designed for the determination of hydrogen peroxide release. We found, however, that the isoluminol-amplified chemiluminescence technique is a suitable tool for measuring secretion of superoxide but not hydrogen peroxide.
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Affiliation(s)
- Anna-Lena Stenfeldt
- Department of Rheumatology and Inflammation Research, University of Göteborg, Sweden.
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33
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Arakawa H, Masuda K, Tajima N, Maeda M. Chemiluminescence assay for tetrahydrobiopterin based on the generation of hydrogen peroxide using isoluminol-microperoxidase in the presence of 1-methoxy PMS. LUMINESCENCE 2007; 22:245-50. [PMID: 17285567 DOI: 10.1002/bio.958] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
We developed a novel highly sensitive chemiluminescence (CL) method for BH(4). The principle of the proposed method is based on active oxygen formation induced by 1-methoxy-5-methyl phenazinium methyl sulphate (1-methoxy PMS) in the presence of dissolved oxygen. Furthermore, active oxygen is determined by a CL assay involving the luminol reaction with microperoxidase. In this report, we examined the mechanism of formation and identified the reactive oxygen species derived from BH(4) employing 1-methoxy PMS. Additionally, optimum conditions for the CL assay of BH(4) were established.
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Affiliation(s)
- Hidetoshi Arakawa
- School of Pharmaceutical Sciences, Showa University, Tokyo 142-8555, Japan.
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34
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Tsukagoshi K, Sawanoi K, Nakajima R. Migration behavior of isoluminol isothiocyanate-labeled α-amino acids in capillary electrophoresis with an absorption/chemiluminescence dual detection system. J Chromatogr A 2007; 1143:288-90. [PMID: 17266969 DOI: 10.1016/j.chroma.2007.01.037] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2006] [Revised: 01/10/2007] [Accepted: 01/11/2007] [Indexed: 10/23/2022]
Abstract
In our previous study, we developed capillary electrophoresis with an ultraviolet absorption/chemiluminescence dual detection system. Here, to demonstrate one of the possible applications of the capable system as well as confirm the advantage, migration behavior of isoluminol isothiocyanate-labeled alpha-amino acids was examined in the capillary electrophoresis with a dual detection system. The labeled samples were first analyzed by absorption detection with an on-capillary, followed by chemiluminescence detection with an end-capillary. The system easily, rapidly, and simultaneously produced useful information concerning chemiluminescence quenching and amino group-labeling due to the presence of both absorption and chemiluminescence detections.
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Affiliation(s)
- Kazuhiko Tsukagoshi
- Department of Chemical Engineering and Materials Science, Faculty of Engineering, Doshisha University, Kyotanabe 610-0321, Japan.
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35
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Abstract
On-capillary chemiluminescence detection for capillary electrophoresis with a single capillary was reported. A hole (about 30 microm diameter) was made on the capillary wall at about 50.5 cm from the inlet end. Hydrogen peroxide solution could enter the capillary from the hole, and mixed with luminol and copper(II) to produce chemiluminescence. The chemiluminescence was detected by a PMT under the hole. Several factors that influenced chemiluminescence intensity were investigated. The detection limits for luminol and N-(4-aminolbutyl)-N-ethylisoluminol (ABEI) were 1 x 10(-11) and 2 x 10(-10) mol L(-1), respectively. The method features simple construction and no dead volume.
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Affiliation(s)
- Cheng-Jie Zhang
- Department of Materials Science and Engineering, School of Engineering, University of Fukui, Japan
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36
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Van Dyke K, Ghareeb E, Van Dyke M, Van Thiel DH. Ultrasensitive peroxynitrite-based luminescence with L-012 as a screening system for antioxidative/antinitrating substances, e.g. Tylenol® (acetaminophen), 4-OH tempol, quercetin and carboxy-PTIO. LUMINESCENCE 2007; 22:267-74. [PMID: 17373026 DOI: 10.1002/bio.959] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Previously our group developed a water-soluble antioxidant screening system using the luminescence of the reaction of peroxynitrite and luminol. In the present study we replaced luminol with the luminol-like compound L-012. This increases the production of luminescence approximately 100-fold and therefore, with a higher signal:noise ratio, this new system can detect antioxidation and antinitration effects at lower doses of the inhibitor. We studied acetaminophen (Tylenol) and its metabolite 3-nitroacetaminophen, tyrosine and nitrotyrosine and all these substances were inhibitory in a dose-responsive manner and below micromolar amounts. In addition quercetin, a polyphenol, was highly active (below micromolar amounts) as an antioxidant and antinitrating compound. 4-OH tempol, the stable free radical, superoxide dismutase (SOD) mimetic, was inhibitory in a dose-responsive manner and below micromolar amounts. Carboxy-PTIO was inhibitory at 10 times micromolar amount but not below that dose, which may be related to colour quenching, since the drug is deeply blue, or possibly it is an inhibitor with a slow kinetic profile. Finally, the amino acid tyrosine has been found to be inhibitory in micromolar amounts, similar to acetaminophen. This indicates that tyrosine can act as an antioxidant and antinitration target alone or conjugated in protein, e.g. insulin.
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Affiliation(s)
- Knox Van Dyke
- Department of Biochemistry and Molecular Pharmacology, Robert C. Byrd Medical Center, West Virginia University Medical School, Morgantown, WV, USA.
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37
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Vyshegurov IK, Anikhovskaia IA, Batmanov IE, Iakovlev MI. [Intestinal endotoxin in the pathogenesis of ocular inflammatory diseases and the antiendoxin constituent of its treatment]. Patol Fiziol Eksp Ter 2007:12-4. [PMID: 17526210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Blood was studied in 119 patients with ocular inflammatory lesions: endophthalmitis (n = 10), iridocyclitis of viral (n = 47) and unknown (n = 62) genesis, by using the procedures developed by the authors to determine the integral values of the concentration of endotoxin in systemic blood flow and the activity of antiendotoxin immunity. Intestinal endotoxin aggression was found to be involved in the pathogenesis of ocular inflammatory diseases. The use of drugs and procedures, which could diminish the entry of intestinal endotoxin into the blood stream and intensify the processes of its binding and release from systemic blood circulation, substantially enhanced the efficiency of a therapeutic process.
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Jancinová V, Drábiková K, Nosál R, Racková L, Májeková M, Holománová D. The combined luminol/isoluminol chemiluminescence method for differentiating between extracellular and intracellular oxidant production by neutrophils. Redox Rep 2006; 11:110-6. [PMID: 16805965 DOI: 10.1179/135100006x116592] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
To address the question why isoluminol, but not luminol, failed to detect oxidants produced intracellularly, differences between these luminophores were investigated with respect to physicochemical parameters and the character of chemiluminescence signal. Our results showed the isoluminol molecule to be more polar, more hydrophilic and possessing lower ability to form intramolecular bonds than the luminol molecule. Therefore, isoluminol: (i) only slightly pervaded biological membranes; (ii) depended essentially on extracellular peroxidase; (iii) did not produce chemiluminescence in the presence of extracellular scavengers; and (iv) it could be considered a specific detector of extracellular radicals. On the other hand, the physicochemical parameters of luminol and partial resistance of its chemiluminescence to the effect of extracellular inhibitors proved the lipo/hydrophilic character of this luminophore and thus its ability to interact with radicals both outside and inside of cells. The luminol chemiluminescence measured in the presence of extracellular scavengers and the isoluminol chemiluminescence were used with the intention to differentiate the effects of two antihistamine drugs on intra- and extracellular radical formation. In activated human neutrophils, brompheniramine inhibited the extracellular and potentiated the intracellular part of chemiluminescence signal, whereas a reducing effect of loratadine was observed in both compartments.
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Affiliation(s)
- Viera Jancinová
- Institute of Experimental Pharmacology, Slovak Academy of Sciences, Bratislava, Slovak Republic.
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39
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Oelze M, Daiber A, Brandes RP, Hortmann M, Wenzel P, Hink U, Schulz E, Mollnau H, von Sandersleben A, Kleschyov AL, Mülsch A, Li H, Förstermann U, Münzel T. Nebivolol inhibits superoxide formation by NADPH oxidase and endothelial dysfunction in angiotensin II-treated rats. Hypertension 2006; 48:677-84. [PMID: 16940222 DOI: 10.1161/01.hyp.0000239207.82326.29] [Citation(s) in RCA: 154] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Nebivolol is a beta(1)-receptor antagonist with vasodilator and antioxidant properties. Because the vascular NADPH oxidase is an important superoxide source, we studied the effect of nebivolol on endothelial function and NADPH oxidase activity and expression in the well-characterized model of angiotensin II-induced hypertension. Angiotensin II infusion (1 mg/kg per day for 7 days) caused endothelial dysfunction in male Wistar rats and increased vascular superoxide as detected by lucigenin-derived chemiluminescence, as well as dihydroethidine staining. Vascular NADPH oxidase activity, as well as expression at the mRNA and protein level, were markedly upregulated, as well as NOS III uncoupled, as evidenced by NO synthase III inhibitor experiments and dihydroethidine staining and by markedly decreased hemoglobin-NO concentrations. Treatment with the beta-receptor blocker nebivolol but not metoprolol (10 mg/kg per day for each drug) normalized endothelial function, reduced superoxide formation, increased NO bioavailability, and inhibited upregulation of the activity and expression of the vascular NADPH oxidase, as well as membrane association of NADPH oxidase subunits (Rac1 and p67(phox)). In addition, NOS III uncoupling was prevented. In vitro treatment with nebivolol but not atenolol or metoprolol induced a dissociation of p67(phox) and Rac1, as well as an inhibition of NADPH oxidase activity assessed in heart membranes from angiotensin II-infused animals, as well as in homogenates of Nox1 and cytosolic subunit-transfected and phorbol ester-stimulated HEK293 cells. These findings indicate that nebivolol interferes with the assembly of NADPH oxidase. Thus, inhibitory effects of this beta-blocker on vascular NADPH oxidase may explain, at least in part, its beneficial effect on endothelial function in angiotensin II-induced hypertension.
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Affiliation(s)
- Matthias Oelze
- Johannes Gutenberg University Hospital, Division of Cardiology, Mainz, Germany
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40
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Lin Z, Xie Z, Lü H, Lin X, Wu X, Chen G. On-Column Coaxial Flow Chemiluminescence Detection for Underivatized Amino Acids by Pressurized Capillary Electrochromatography Using a Monolithic Column. Anal Chem 2006; 78:5322-8. [PMID: 16878866 DOI: 10.1021/ac060152y] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A new method for pressurized capillary electrochromatography (pCEC) coupling with chemiluminescence (CL) detection using a modified on-column coaxial flow detection interface was developed. To evaluate the feasibility and reliability of the experimental setup, the typical CL compounds luminol and isoluminol were separated and detected by using this pCEC-CL system. A detailed investigation of CL detection interface and postcolumn CL reagent flow rate parameters was described. The excellent resolution and detection sensitivity was achieved by using 3-microm ODS-C18 packed column with 30% ACN (v/v), 5 mmol/L phosphate buffer (pH 8.0). Moreover, with the presence of Co(II) (1.0 x 10(-4) mol/L) in the mobile phase, the linear range of the concentration for luminol was 2.0 x 10(-9)-2.0 x 10(-6) mol/L with a detection limit (S/N = 3) of 2.0 x 10(-10) mol/L, and 2.5 x 10(4) theoretical plates was achieved. In addition, separation and detection of the underivatized amino acids (l-threonine and l-tyrosine) were accomplished by using a polymerized monolithic column based on the principle of the luminol-H2O2-Cu(II)-amino acid CL system. Under the optimum conditions, the mixture of amino acids was efficiently separated with satisfactory results.
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Affiliation(s)
- Zian Lin
- Ministry of Education Key Laboratory of Analysis and Detection Technology for Food-Safety, and Department of Chemistry, Fuzhou University, Fuzhou, 350002, China
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41
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Jiang Y, Scofield VL, Yan M, Qiang W, Liu N, Reid AJ, Lynn WS, Wong PKY. Retrovirus-induced oxidative stress with neuroimmunodegeneration is suppressed by antioxidant treatment with a refined monosodium alpha-luminol (Galavit). J Virol 2006; 80:4557-69. [PMID: 16611916 PMCID: PMC1472001 DOI: 10.1128/jvi.80.9.4557-4569.2006] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Oxidative stress is involved in many human neuroimmunodegenerative diseases, including human immunodeficiency virus disease/AIDS. The retrovirus ts1, a mutant of Moloney murine leukemia virus, causes oxidative stress and progressive neuro- and immunopathology in mice infected soon after birth. These pathological changes include spongiform neurodegeneration, astrogliosis, thymic atrophy, and T-cell depletion. Astrocytes and thymocytes are directly infected and killed by ts1. Neurons are not infected, but they also die, most likely as an indirect result of local glial infection. Cytopathic effects of ts1 infection in cultured astrocytes are associated with accumulation of the viral envelope precursor protein gPr80env in the endoplasmic reticulum (ER), which triggers ER stress and oxidative stress. We have reported (i) that activation of the Nrf2 transcription factor and upregulation of antioxidative defenses occurs in astrocytes infected with ts1 in vitro and (ii) that some ts1-infected astrocytes survive infection by mobilization of these pathways. Here, we show that treatment with a refined monosodium alpha-luminol (Galavit; GVT) suppresses oxidative stress and Nrf2 activation in cultured ts1-infected astrocytes. GVT treatment also inhibits the development of spongiform encephalopathy and gliosis in the central nervous system (CNS) in ts1-infected mice, preserves normal cytoarchitecture in the thymus, and delays paralysis, thymic atrophy, wasting, and death. GVT treatment of infected mice reduces ts1-induced oxidative stress, cell death, and pathogenesis in both the CNS and thymus of treated animals. These studies suggest that oxidative stress mediates ts1-induced neurodegeneration and T-cell loss.
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Affiliation(s)
- Yuhong Jiang
- The University of Texas M. D. Anderson Cancer Center, Science Park-Research Division, P.O. Box 389, Smithville, Texas 78957, USA
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42
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Shaplygin LV, Klopot AM. [The efficiency of the drug "Galavit" in complex treatment for infectious-and-inflammatory diseases of urogenital system]. Voen Med Zh 2006; 327:29-34. [PMID: 16737072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
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43
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Bartolomé MC, Sánchez-Fortún S. Effects of selected biocides used in the disinfection of cooling towers on toxicity and bioaccumulation in Artemia larvae. Environ Toxicol Chem 2005; 24:3137-42. [PMID: 16445096 DOI: 10.1897/05-077r.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
This paper reports the acute toxicity of three biocides used in the disinfection of cooling towers, tetrakis(hydroxymethyl) phosphonium chloride (THPC), trichloroisocyanuric acid (TCIC), and sodium bromide (NaBr), on Artemia larvae, their effect on the phototactic response of this organism, and the potential of bioaccumulation in this species. The 24-h median lethal concentration (LC50) values for these biocides with respect to 24-, 48-, and 72-h-old Artemia, determined by static bioassays, showed the following rank order of toxicity: THPC < TCIC < NaBr. An age-dependent increase in sensitivity was seen for each compound. All three biocides reduced the phototactic response of 24-h-old Artemia larvae in 24-h static bioassays; the median inhibitory concentration ratios obtained were 30 to 40 times lower than their respective 24-h LC50 values. The results suggest that phototaxis bioassays could provide the speed and simplicity required for screening many potential pollutants for harmful effects. The bioconcentration factors obtained for Artemia larvae exposed to 10% LC50 for 168 h in renewal assays were 93.75, 1.67, and 0.23 for THPC, TCIC, and NaBr, respectively. This shows these biocides pose no bioaccumulation risk in this organism, although the value of 93.75 obtained for THPC is close to the threshold above which such a risk is considered to exist.
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Affiliation(s)
- María Carmen Bartolomé
- Departamento de Toxicología y Farmacología, Facultad de Veterinaria, Universidad Complutense de Madrid, Spain
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44
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Muranaka S, Fujita H, Fujiwara T, Ogino T, Sato EF, Akiyama J, Imada I, Inoue M, Utsumi K. Mechanism and characteristics of stimuli-dependent ROS generation in undifferentiated HL-60 cells. Antioxid Redox Signal 2005; 7:1367-76. [PMID: 16115042 DOI: 10.1089/ars.2005.7.1367] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
It has been widely believed that undifferentiated human promyelocytic leukemia cells (HL-60) have no ability to generate reactive oxygen species (ROS) responding to stimuli. We report here that undifferentiated HL-60 cells possess NADPH oxidase and that generation of superoxide can be measured using a highly sensitive chemiluminescence dye, L-012. Five subunits of NADPH oxidase, namely, gp91(phox), p22(phox), p67(phox), p47(phox), and Rac 2, were detected in undifferentiated HL-60 cells by immunoblotting analysis. The contents of these NADPH oxidase components in the cells were increased with the differentiation induced by phorbol myristate acetate (PMA), except for p22(phox). Messenger RNAs of these subunits were also detected by the RT-PCR method, and their expressions increased except that of p22(phox) with the differentiation induced by PMA. Kinetic analysis using L-012 revealed that HL-60 cells generated substantial amounts of ROS by various stimulants, including formylmethionyl-leucyl-phenylalanine, PMA, myristic acid, and a Ca2+ ionophore, A23187. Both diphenyleneiodonium (an inhibitor of FAD-dependent oxidase) and apocynin (a specific inhibitor of NADPH oxidase) suppressed this stimuli-dependent ROS generation. Genistein, staurosporine, uric acid, and sodium azide inhibited the ROS generation in undifferentiated HL-60 cells in a similar way to that in undifferentiated neutrophils. These results suggested that the mechanism of ROS generation in undifferentiated HL-60 cells is the same as that in primed neutrophils.
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Affiliation(s)
- Shikibu Muranaka
- Institute of Medical Science, Kurashiki Medical Center, Kurashiki, Japan
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45
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Calvo-Muñoz ML, Dupont-Filliard A, Billon M, Guillerez S, Bidan G, Marquette C, Blum L. Detection of DNA hybridization by ABEI electrochemiluminescence in DNA-chip compatible assembly. Bioelectrochemistry 2005; 66:139-43. [PMID: 15833714 DOI: 10.1016/j.bioelechem.2004.04.009] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2003] [Revised: 04/01/2004] [Accepted: 04/16/2004] [Indexed: 11/28/2022]
Abstract
The electrochemiluminescence (ECL) of a luminol derivate (ABEI) generated both by a carbon electrode and a polypyrrole-coated carbon electrode was examined. It was found that the polypyrrole film (ppy) did not inhibit the ECL. After that, ABEI anchored on a single stranded DNA target (ODNt) has been used for the ECL detection of the hybridization between a complementary single stranded DNA probe (ODNp) covalently linked to a polypyrrole support and the ODNt. The ECL detection has been performed using a DNA sensor having a low surface concentration of ODNp probes, constituted of a polypyrrole copolymer electrosynthesized from a pyrrole-ODNp/pyrrole monomer ratio of 1/20,000.
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Affiliation(s)
- M-L Calvo-Muñoz
- Apibio, Zone ASTEC, 15 rue des Martyrs, F-38054 Grenoble Cedex 9, France
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Kanno T, Sato EE, Muranaka S, Fujita H, Fujiwara T, Utsumi T, Inoue M, Utsumi K. Oxidative stress underlies the mechanism for Ca(2+)-induced permeability transition of mitochondria. Free Radic Res 2004; 38:27-35. [PMID: 15061651 DOI: 10.1080/10715760310001626266] [Citation(s) in RCA: 85] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Recent studies demonstrated that the generation of intracellular reactive oxygen species (ROS) was enhanced prior to the onset of mitochondrial membrane permeability transition (MPT), a critical step for the induction of DNA fragmentation and apoptosis. Although Ca2+ induces typical MPT that involves depolarization and swelling of mitochondria and finally releases cytochrome c into cytosol, the mechanism by which ROS induce MPT remains unclear. In the presence of inorganic phosphate, Ca2+ increased the oxygen consumption and ROS production by isolated mitochondria as determined by a chemiluminescence (CHL) method using L-012. Ca2+ increased the generation of H2O2 by some mechanism that was inhibited by cyclosporin A but not by superoxide dismutase (SOD) and trifluoperazine. Ca2+ decreased the content of free thiols in adenine nucleotide translocase (ANT) in mitochondrial membranes with concomitant increase in ROS generation. The presence of cyclosporin A, trifluoperazine, or SOD inhibited the Ca(2+)-induced increase of L-012 CHL and decrease in the free thiols of ANT. These results indicate that Ca2+ increases the generation of ROS which oxidize the free thiol groups in mitochondrial ANT, thereby inducing MPT to release cytochrome c.
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Affiliation(s)
- Tomoko Kanno
- Institute of Medical Science, Kurashiki Medical Center, Kurashiki 710-8522, Japan.
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Daiber A, Oelze M, August M, Wendt M, Sydow K, Wieboldt H, Kleschyov AL, Munzel T. Detection of superoxide and peroxynitrite in model systems and mitochondria by the luminol analogue L-012. Free Radic Res 2004; 38:259-69. [PMID: 15129734 DOI: 10.1080/10715760410001659773] [Citation(s) in RCA: 106] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
In the present study we investigated the specificity and sensitivity of the chemiluminescence (CL) dye and luminol analogue 8-amino-5-chloro-7-phenylpyrido[3,4-d]pyridazine-1,4-(2H,3H) dione (L-012) to detect reactive oxygen species (ROS) such as superoxide, peroxynitrite and hydrogen peroxide in cell free systems as well as in isolated mitochondria. The results obtained by L-012 were compared with other CL substances such as luminol, lucigenin, coelenterazine and the fluorescence dye dihydroethidine. The results indicate that the L-012-derived chemiluminescence induced by superoxide from hypoxanthine/xanthine oxidase (HX/XO) or by 3-morpholino sydnonimine (SIN-1)-derived peroxynitrite largely depends on the incubation time. Irrespective of the experimental conditions, L-012-derived CL in response to HX/XO and SIN-1 was 10-100 fold higher than with other CL dyes tested. In a cell-free system, authentic peroxynitrite yielded a higher L-012-enhanced CL signal than authentic superoxide and the superoxide-induced signal in cell-free as well as isolated mitochondria increased in the presence of equimolar concentrations of nitrogen monoxide (NO). The superoxide signal/background ratio detected by L-012-enhanced CL in isolated mitochondria with blocked respiration was 7 fold higher than that obtained by the superoxide sensitive fluorescence dye dihydroethidine. We conclude that L-012-derived CL may provide a sensitive and reliable tool to detect superoxide and peroxynitrite formation in mitochondrial suspensions.
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Affiliation(s)
- Andreas Daiber
- Universitätsklinikum Hamburg-Eppendorf, Medizinische Klinik III, Angiologie und Kardiologie, Martinistr. 52, 20246 Hamburg, Germany.
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Kopprasch S, Pietzsch J, Graessler J. Validation of different chemilumigenic substrates for detecting extracellular generation of reactive oxygen species by phagocytes and endothelial cells. LUMINESCENCE 2004; 18:268-73. [PMID: 14587078 DOI: 10.1002/bio.737] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Chemiluminescence is a widely used tool to detect extracellular generation of reactive oxygen species (ROS). In the present study we tested four different chemilumigenic substrates (CLS)--luminol, isoluminol, lucigenin and pholasin-to detect extracellular CL in different cell types: polymorphonuclear leukocytes (PMN); DMSO-differentiated HL-60 cells; murine macrophages (RAW 264.7); and TNF alpha-stimulated human endothelial cells (HUVEC). Extracellular ROS production was calculated by subtracting intracellular CL response in the presence of superoxide dismutase and catalase from the overall CL response in the absence of enzymes. CL varied considerably in dependence on the CLS and the stimulus used to evoke ROS generation. Luminol (oxidized LDL and zymosan stimulation) and isoluminol (FMLP and PMA stimulation) were the most effective CLS for PMN. Using 5 micromol/L lucigenin as CLS, small but consistent CL responses could be obtained in macrophages stimulated with PMA, zymosan or oxidized LDL. FMLP-stimulated extracellular CL in H-60 cells, HUVEC and macrophages was detected with the greatest sensitivity by pholasin. Our results demonstrate that none of the investigated CLS consistently yielded the highest CL quantum, either in different cell types with one stimulating agent or by different stimulating agents in one cell type. To get the highest CL quantum in experimental studies, we recommend optimizing the CLS depending on the cell type and the ROS-generating stimulus used.
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Affiliation(s)
- Steffi Kopprasch
- Department of Internal Medicine 3, Carl Gustav Carus Medical School, University of Technology Dresden, Dresden, Germany.
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Safavi A, Karimi MA, Hormozi Nezhad MR. Flow-injection determination of isoniazid using sodium dichloroisocyanurate- and trichloroisocyanuric acid-luminol chemiluminescence systems. ACTA ACUST UNITED AC 2004; 59:481-6. [PMID: 15178311 DOI: 10.1016/j.farmac.2003.07.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2003] [Accepted: 07/28/2003] [Indexed: 11/19/2022]
Abstract
A chemiluminescent (CL) method for the determination of isoniazid is described. The method is based on the CL generated during the oxidation of luminol by sodium dichloroisocyanurate (SDCC) and trichloroisocyanuric acid (TCCA) in alkaline medium. It was found that isoniazid greatly enhances this CL intensity when present in the luminol solution. Based on this observation, a new flow-injection CL method for the determination of isoniazid has been proposed in this paper. The detection limits were 2 and 3 ng ml(-1) isoniazid for the SDCC-luminol and TCCA-luminol CL systems, respectively. The relative CL intensity was linear with the isoniazid concentration in the range of 4-100 and 100-200 ng ml(-1) for the SDCC-luminol CL system, and 6-200 and 200-1000 ng ml(-1) for the TCCA-luminol CL system. The results obtained for the assay of pharmaceutical preparations compared well with those obtained by the official methods and demonstrated good accuracy and precision.
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Affiliation(s)
- A Safavi
- Department of Chemistry, Faculty of Sciences, Shiraz University, Shiraz 71454, Iran.
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Pavelkova M, Kubala L. Luminol-, isoluminol- and lucigenin-enhanced chemiluminescence of rat blood phagocytes stimulated with different activators. LUMINESCENCE 2004; 19:37-42. [PMID: 14981645 DOI: 10.1002/bio.754] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Luminol-, isoluminol- or lucigenin-enhanced chemiluminescence (CL) was used to measure the production of reactive oxygen species by rat blood leukocytes. Opsonized zymosan (OZ), phorbol-12-myristate-13-acetate (PMA), calcium ionophore A23187 (Ca-I) or N-formyl-Met-Leu-Phe (fMLP) were used as activators. The CL signal of isolated blood leukocytes decreased in rank order of luminol > isoluminol > lucigenin. The kinetic profiles of luminol- and isoluminol-enhanced CL were similar upon stimulation by each activator tested. The remarkably higher luminol and isoluminol CL responses were obtained after OZ stimulation when compared with other activators. However, when lucigenin was used, the PMA- and OZ-stimulated CL were comparable. The presence of plasma increased OZ-activated CL because of the enhanced phagocytosis of OZ. This was demonstrated by determining the phagocytosis of the fluorescent OZ using a flow cytometer. In contrast, the presence of plasma decreased PMA-activated CL, due to the antioxidant properties of plasma as determined by the CL method. As far as whole blood is concerned, only OZ activated luminol-enhanced CL was reliable. Blood volumes over 5 microL decreased CL activity due to the scavenging ability of erythrocytes. The results suggest that 0.5 microL whole blood is sufficient for routine luminol-enhanced CL analysis of whole blood oxidative burst in rats.
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Affiliation(s)
- Martina Pavelkova
- Institute of Biophysics, Academy of Sciences of the Czech Republic, Kralovopolska 135, 612 65 Brno, Czech Republic.
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