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Wang Z, Li Y, Wang J, Li S. Tetracycline antibiotics in agricultural soil: Dissipation kinetics, transformation pathways, and structure-related toxicity. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 949:175126. [PMID: 39084385 DOI: 10.1016/j.scitotenv.2024.175126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2024] [Revised: 07/26/2024] [Accepted: 07/27/2024] [Indexed: 08/02/2024]
Abstract
Tetracyclines (TCs) are the most common antibiotics in agricultural soil, due to their widespread usage and strong persistence. Biotic and abiotic degradation of TCs may generate toxic transformation products (TPs), further threatening soil ecological safety. Despite the increasing attention on the environmental behavior of TCs, a systematic review on the dissipation of TCs, evolution of TPs, and structure-toxicity relationship of TCs in agricultural soil remains lacking. This review aimed to provide a comprehensive overview of the environmental fate of TCs in agricultural soil. We first introduced the development history and structural features of different generations of TCs. Then, we comparatively evaluated the dissipation kinetics, transportation pathways, and ecological impacts of three representative TCs, namely tetracycline (TC), oxytetracycline (OTC), and chlortetracycline (CTC), in agricultural soil. The results showed that the dissipation kinetics of TCs generally followed the first-order kinetic model, with the median dissipation half-lives ranging from 20.0 to 38.8 days. Among the three TCs, OTC displayed the lowest dissipation rates due to its structural stability. The typical degradation pathways of TCs in soil included epimerization/isomerization, demethylation, and dehydration. Isomerization and dehydration reactions may lead to the formation of more toxic TPs, while demethylation was accompanied by the alteration of the minimal pharmacophore of TCs thus potentially reducing the toxicity. Toxicological experiments are urgently needed in future to comprehensively evaluate the ecological risks of TCs in agricultural soil.
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Affiliation(s)
- Zhu Wang
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Ying Li
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Jie Wang
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Si Li
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China.
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Nie Q, Deng J, Xie B, Zhou T. Highly efficient and sensitive detection of tetracycline in environmental water: Insights into the synergistic mechanism of biomass-derived carbon dots and N-methyl pyrrolidone solvent. Talanta 2024; 278:126512. [PMID: 38970964 DOI: 10.1016/j.talanta.2024.126512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 06/03/2024] [Accepted: 07/02/2024] [Indexed: 07/08/2024]
Abstract
The tetracycline (TC) residue in water environment has caused serious public safety issue. Thus, efficient sensing of TC is highly desirable for environmental protection. Herein, biomass-derived nitrogen-doped carbon dots (N-CDs) synthesized from natural Ophiopogon japonicus f. nanus (O. japonicus) were used for TC detection. The unique solvent synergism efficiently enhanced detection sensitivity, and the detailed sensing mechanism was deeply investigated. The blue fluorescence of N-CDs was quenched by TC via static quenching and inner filter effect. Moreover, the enhancement of green fluorescence from deprotonated TC was firstly proposed and sufficiently verified. The solvent effect of N-methyl pyrrolidone (NMP) and the fluorescence resonance energy transfer (FRET) with N-CDs achieved an instantaneous enhancement of the green emission by 64-fold. Accordingly, a ratiometric fluorescence method was constructed for rapid and sensitive sensing of TC with a low detection limit of 6.3 nM within 60 s. The synergistic effect of N-CDs and solvent assistance significantly improved the sensitivity by 7-fold compared to that in water. Remarkably, the biomass-derived N-CDs displayed low cost, good solubility, and desired stability. The deep insights into the synergism with solvent can provide prospects for the utilization of biomass-based materials and broaden the development of advanced sensors with promising applications.
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Affiliation(s)
- Qi Nie
- School of Ecological and Environmental Sciences, Shanghai Engineering Research Center of Biotransformation of Organic Solid Waste, Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China
| | - Jingjing Deng
- School of Ecological and Environmental Sciences, Shanghai Engineering Research Center of Biotransformation of Organic Solid Waste, Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China; Institute of Eco-Chongming (IEC), 3663 North Zhongshan Road, Shanghai, 20062, China
| | - Bing Xie
- School of Ecological and Environmental Sciences, Shanghai Engineering Research Center of Biotransformation of Organic Solid Waste, Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China
| | - Tianshu Zhou
- School of Ecological and Environmental Sciences, Shanghai Engineering Research Center of Biotransformation of Organic Solid Waste, Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China; Institute of Eco-Chongming (IEC), 3663 North Zhongshan Road, Shanghai, 20062, China.
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Segovia-Sandoval SJ, Mendoza-Mendoza E, Jacobo-Azuara A, Jiménez-López BA, Hernández-Arteaga AC. Highly efficient visible-LED-driven photocatalytic degradation of tetracycline and rhodamine B over Bi 2WO 6/BiVO 4 heterostructures decorated with silver and graphene synthesized by a novel green method. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:39945-39960. [PMID: 37227646 DOI: 10.1007/s11356-023-27731-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 05/14/2023] [Indexed: 05/26/2023]
Abstract
Visible-light-driven Bi2WO6/BiVO4 (BWO/BVO) heterostructures were obtained by joining BWO and BVO n-type semiconductors. A novel and green metathesis-assisted molten salt route was applied to synthesize BWO/BVO. This route is straightforward, high-yield, intermediate temperature, and was successful for obtaining BWO/BVO heterostructures with several ratios (1:1, 1:2, 2:1 w/w). Besides, the 1BWO/1BVO was decorated with Ag nanoparticles (Ag-NPs, 6 wt.%) and graphene (G, 3 wt.%), applying simple and environmentally responsible procedures. The heterostructures were characterized by XRD, Raman, UV-Vis DRS, TEM/HRTEM, PL, and Zeta potential techniques. Ag-NPs and G effectively boosted the photocatalytic activity of 1BWO/1BVO for degrading tetracycline (TC) and rhodamine B (RhB) pollutants. A lab-made 19-W blue LED photoreactor was designed, constructed, and operated to induce the photoactivity of BWO/BVO heterostructures. The low-rated power consumption of the photoreactor (0.01-0.04 kWh) vs. the percent degradation of TC or RhB (%XTC = 73, %XRhB = 100%) is one of the outstanding features of this study. Besides, scavenger tests determined that holes and superoxides are the main oxidative species that produced TC and RhB oxidation. Ag/1BWO/1BVO exhibited high stability in reuse photocatalytic cycles.
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Affiliation(s)
- Sonia Judith Segovia-Sandoval
- División de Ciencias Naturales y Exactas, Departamento de Química, Universidad de Guanajuato, Col. Noria Alta S/N, Guanajuato GTO, 36050, México
| | - Esmeralda Mendoza-Mendoza
- Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, Dr. M. Nava 6, San Luis Potosí SLP, 78210, México.
- Centro de Investigación en Ciencias de La Salud y Biomedicina, Microscopia de Alta Resolución, Universidad Autónoma de San Luis Potosí, Av. Sierra Leona 550, San Luis Potosí SLP, 78210, México.
- Investigadores por México-CONACYT, Cuidad de México, México.
| | - Araceli Jacobo-Azuara
- División de Ciencias Naturales y Exactas, Departamento de Química, Universidad de Guanajuato, Col. Noria Alta S/N, Guanajuato GTO, 36050, México
| | - Brenda Azharel Jiménez-López
- Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, Dr. M. Nava 6, San Luis Potosí SLP, 78210, México
- Centro de Investigación en Ciencias de La Salud y Biomedicina, Microscopia de Alta Resolución, Universidad Autónoma de San Luis Potosí, Av. Sierra Leona 550, San Luis Potosí SLP, 78210, México
| | - Aida Catalina Hernández-Arteaga
- Facultad de Ciencias, Universidad Autónoma de San Luis Potosí, Av. Parque Chapultepec 1570, San Luis Potosí SLP, 78210, México
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Zergiebel S, Ueberschaar N, Seeling A. Development and optimization of an ultra-fast microextraction followed by HPLC-UV of tetracycline residues in milk products. Food Chem 2023; 402:134270. [DOI: 10.1016/j.foodchem.2022.134270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 09/10/2022] [Accepted: 09/12/2022] [Indexed: 10/14/2022]
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Effect of Hydrogel Substrate Components on the Stability of Tetracycline Hydrochloride and Swelling Activity against Model Skin Sebum. Int J Mol Sci 2023; 24:ijms24032678. [PMID: 36768998 PMCID: PMC9916833 DOI: 10.3390/ijms24032678] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 01/23/2023] [Accepted: 01/24/2023] [Indexed: 02/01/2023] Open
Abstract
Due to its high instability and rapid degradation under adverse conditions, tetracycline hydrochloride (TC) can cause difficulties in the development of an effective but stable formulation for the topical treatment of acne. The aim of the following work was to propose a hydrogel formulation that would ensure the stability of the antibiotic contained in it. Additionally, an important property of the prepared formulations was the activity of the alcoholamines contained in them against the components of the model sebum. This feature may help effectively cleanse the hair follicles in the accumulated sebum layer. A series of formulations with varying proportions of anionic polymer and alcoholamine and containing different polymers have been developed. The stability of tetracycline hydrochloride contained in the hydrogels was evaluated for 28 days by HPLC analysis. Formulations containing a large excess of TRIS alcoholamine led to the rapid degradation of TC from an initial concentration of about 10 µg/mL to about 1 µg/mL after 28 days. At the same time, these formulations showed the highest activity against artificial sebum components. Thanks to appropriately selected proportions of the components, it was possible to develop a formulation that assured the stability of tetracycline for ca. one month, while maintaining formulation activity against the components of model sebum.
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Surette MD, Waglechner N, Koteva K, Wright GD. HelR is a helicase-like protein that protects RNA polymerase from rifamycin antibiotics. Mol Cell 2022; 82:3151-3165.e9. [PMID: 35907401 DOI: 10.1016/j.molcel.2022.06.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 03/15/2022] [Accepted: 06/12/2022] [Indexed: 10/16/2022]
Abstract
Rifamycin antibiotics such as rifampin are potent inhibitors of prokaryotic RNA polymerase (RNAP) used to treat tuberculosis and other bacterial infections. Although resistance arises in the clinic principally through mutations in RNAP, many bacteria possess highly specific enzyme-mediated resistance mechanisms that modify and inactivate rifamycins. The expression of these enzymes is controlled by a 19-bp cis-acting rifamycin-associated element (RAE). Guided by the presence of RAE sequences, we identify a helicase-like protein, HelR, in Streptomyces venezuelae that confers broad-spectrum rifamycin resistance. We show that HelR also promotes tolerance to rifamycins, enabling bacterial evasion of the toxic properties of these antibiotics. HelR forms a complex with RNAP and rescues transcription inhibition by displacing rifamycins from RNAP, thereby providing resistance by target protection . Furthermore, HelRs are broadly distributed in Actinobacteria, including several opportunistic Mycobacterial pathogens, offering yet another challenge for developing new rifamycin antibiotics.
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Affiliation(s)
- Matthew D Surette
- David Braley Center for Antibiotic Discovery, M.G. DeGroote Institute for Infectious Disease Research, Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON L8S 4L8, Canada
| | - Nicholas Waglechner
- Toronto Invasive Bacterial Diseases Network, Mount Sinai Hospital, Toronto, ON M5G 1X5, Canada
| | - Kalinka Koteva
- David Braley Center for Antibiotic Discovery, M.G. DeGroote Institute for Infectious Disease Research, Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON L8S 4L8, Canada
| | - Gerard D Wright
- David Braley Center for Antibiotic Discovery, M.G. DeGroote Institute for Infectious Disease Research, Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON L8S 4L8, Canada.
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Qin C, Tang J, Qiao R, Lin S. Tetracycline sensitizes TiO2 for visible light photocatalytic degradation via ligand-to-metal charge transfer. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.01.067] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Zhong SF, Yang B, Xiong Q, Cai WW, Lan ZG, Ying GG. Hydrolytic transformation mechanism of tetracycline antibiotics: Reaction kinetics, products identification and determination in WWTPs. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 229:113063. [PMID: 34890985 DOI: 10.1016/j.ecoenv.2021.113063] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 11/22/2021] [Accepted: 12/04/2021] [Indexed: 06/13/2023]
Abstract
Antibiotic residues and antibiotic resistance have been widely reported in aquatic environments. Hydrolysis of antibiotics is one of the important environmental processes. Here we investigated the hydrolytic transformation of four tetracycline antibiotics i.e. tetracycline (TC), chlortetracycline (CTC), oxytetracycline (OTC) and doxycycline (DC) under different environmental conditions, and determined their parents and transformation products in the wastewater treatment plants (WWTPs). The results showed that the hydrolysis of the four tetracyclines followed first-order reaction kinetics, and the acid-catalyzed hydrolysis rates were significantly lower than the base-catalyzed and neutral pH hydrolysis rates. The effect of temperature on tetracycline hydrolysis was quantified by Arrhenius equation, with Ea values ranged from 42.0 kJ mol-1 to 77.0 kJ mol-1 at pH 7.0. In total, nine, six, eight and nine transformation products at three different pH conditions were identified for TC, CTC, OTC and DC, respectively. The main hydrolysis pathways involved the epimerization/isomerization, and dehydration. According to the mass balance analysis, 4-epi-tetracycline and iso-chlortetracycline were the main hydrolytic products for TC and CTC, respectively. The 2 tetracyclines and 4 hydrolysis products were found in the sludge samples in two WWTPs, with concentrations from 15.8 ng/g to 1418 ng/g. Preliminary toxicity evaluation for the tetracyclines and their hydrolysis products showed that some hydrolysis products had higher predicted toxicity than their parent compounds. These results suggest that the hydrolysis products of tetracycline antibiotics should also be included in environmental monitoring and risk assessment.
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Affiliation(s)
- Shao-Fen Zhong
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; School of Environment, South China Normal University, Guangzhou 510006, China; School of Chemical Engineering and Energy Technology, Dongguan University of Technology, Dongguan 523808, China
| | - Bin Yang
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; School of Environment, South China Normal University, Guangzhou 510006, China.
| | - Qian Xiong
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; School of Environment, South China Normal University, Guangzhou 510006, China
| | - Wen-Wen Cai
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; School of Environment, South China Normal University, Guangzhou 510006, China
| | - Zheng-Gang Lan
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; School of Environment, South China Normal University, Guangzhou 510006, China
| | - Guang-Guo Ying
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; School of Environment, South China Normal University, Guangzhou 510006, China.
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De Simeis D, Serra S. Actinomycetes: A Never-Ending Source of Bioactive Compounds-An Overview on Antibiotics Production. Antibiotics (Basel) 2021; 10:antibiotics10050483. [PMID: 33922100 PMCID: PMC8143475 DOI: 10.3390/antibiotics10050483] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 04/18/2021] [Accepted: 04/19/2021] [Indexed: 12/13/2022] Open
Abstract
The discovery of penicillin by Sir Alexander Fleming in 1928 provided us with access to a new class of compounds useful at fighting bacterial infections: antibiotics. Ever since, a number of studies were carried out to find new molecules with the same activity. Microorganisms belonging to Actinobacteria phylum, the Actinomycetes, were the most important sources of antibiotics. Bioactive compounds isolated from this order were also an important inspiration reservoir for pharmaceutical chemists who realized the synthesis of new molecules with antibiotic activity. According to the World Health Organization (WHO), antibiotic resistance is currently one of the biggest threats to global health, food security, and development. The world urgently needs to adopt measures to reduce this risk by finding new antibiotics and changing the way they are used. In this review, we describe the primary role of Actinomycetes in the history of antibiotics. Antibiotics produced by these microorganisms, their bioactivities, and how their chemical structures have inspired generations of scientists working in the synthesis of new drugs are described thoroughly.
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Ghribi F, Sehailia M, Aoudjit L, Touahra F, Zioui D, Boumechhour A, Halliche D, Bachari K, Benmaamar Z. Solar-light promoted photodegradation of metronidazole over ZnO-ZnAl2O4 heterojunction derived from 2D-layered double hydroxide structure. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112510] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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11
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A brief history of antibiotics and select advances in their synthesis. J Antibiot (Tokyo) 2017; 71:153-184. [DOI: 10.1038/ja.2017.62] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 04/17/2017] [Accepted: 04/23/2017] [Indexed: 12/20/2022]
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Sepehr MN, Al-Musawi TJ, Ghahramani E, Kazemian H, Zarrabi M. Adsorption performance of magnesium/aluminum layered double hydroxide nanoparticles for metronidazole from aqueous solution. ARAB J CHEM 2017. [DOI: 10.1016/j.arabjc.2016.07.003] [Citation(s) in RCA: 82] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Begum G, Reddy TN, Kumar KP, Dhevendar K, Singh S, Amarnath M, Misra S, Rangari VK, Rana RK. In Situ Strategy to Encapsulate Antibiotics in a Bioinspired CaCO3 Structure Enabling pH-Sensitive Drug Release Apt for Therapeutic and Imaging Applications. ACS APPLIED MATERIALS & INTERFACES 2016; 8:22056-63. [PMID: 27513816 DOI: 10.1021/acsami.6b07177] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Herein we demonstrate a bioinspired method involving macromolecular assembly of anionic polypeptide with cationic peptide-oligomer that allows for in situ encapsulation of antibiotics like tetracycline in CaCO3 microstructure. In a single step one-pot process, the encapsulation of the drug occurs under desirable environmentally benign conditions resulting in drug loaded CaCO3 microspheres. While this tetracycline-loaded sample exhibits pH dependent in vitro drug-release profile and excellent antibacterial activity, the encapsulated drug or the dye-conjugated peptide emits fluorescence suitable for optical imaging and detection, thereby making it a multitasking material. The efficacy of tetracycline loaded calcium carbonate microspheres as pH dependent drug delivery vehicles is further substantiated by performing cell viability experiments using normal and cancer cell lines (in vitro). Interestingly, the pH-dependent drug release enables selective cytotoxicity toward cancer cell lines as compared to the normal cells, thus having the potential for further development of therapeutic applications.
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Affiliation(s)
- Gousia Begum
- Nanomaterials Laboratory, Inorganic and Physical Chemistry Division, CSIR-Indian Institute of Chemical Technology , Hyderabad-500 007, India
| | - Thuniki Naveen Reddy
- Nanomaterials Laboratory, Inorganic and Physical Chemistry Division, CSIR-Indian Institute of Chemical Technology , Hyderabad-500 007, India
| | - K Pranay Kumar
- Toxicology Unit, Biology Division, CSIR-Indian Institute of Chemical Technology , Hyderabad-500 007, India
| | - Koude Dhevendar
- Toxicology Unit, Biology Division, CSIR-Indian Institute of Chemical Technology , Hyderabad-500 007, India
| | - Shashi Singh
- CSIR-Centre for Cellular and Molecular Biology , Hyderabad-500 007, India
| | - Miriyala Amarnath
- CSIR-Centre for Cellular and Molecular Biology , Hyderabad-500 007, India
| | - Sunil Misra
- Toxicology Unit, Biology Division, CSIR-Indian Institute of Chemical Technology , Hyderabad-500 007, India
| | - Vijaya K Rangari
- Department of Materials Science and Engineering, Tuskegee University , Tuskegee, Alabama 36088, United States
| | - Rohit Kumar Rana
- Nanomaterials Laboratory, Inorganic and Physical Chemistry Division, CSIR-Indian Institute of Chemical Technology , Hyderabad-500 007, India
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rRNA Binding Sites and the Molecular Mechanism of Action of the Tetracyclines. Antimicrob Agents Chemother 2016; 60:4433-41. [PMID: 27246781 DOI: 10.1128/aac.00594-16] [Citation(s) in RCA: 103] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The tetracycline antibiotics are known to be effective in the treatment of both infectious and noninfectious disease conditions. The 16S rRNA binding mechanism currently held for the antibacterial action of the tetracyclines does not explain their activity against viruses, protozoa that lack mitochondria, and noninfectious conditions. Also, the mechanism by which the tetracyclines selectively inhibit microbial protein synthesis against host eukaryotic protein synthesis despite conservation of ribosome structure and functions is still questionable. Many studies have investigated the binding of the tetracyclines to the 16S rRNA using the small ribosomal subunit of different bacterial species, but there seems to be no agreement between various reports on the exact binding site on the 16S rRNA. The wide range of activity of the tetracyclines against a broad spectrum of bacterial pathogens, viruses, protozoa, and helminths, as well as noninfectious conditions, indicates a more generalized effect on RNA. In the light of recent evidence that the tetracyclines bind to various synthetic double-stranded RNAs (dsRNAs) of random base sequences, suggesting that the double-stranded structures may play a more important role in the binding of the tetracyclines to RNA than the specific base pairs, as earlier speculated, it is imperative to consider possible alternative binding modes or sites that could help explain the mechanisms of action of the tetracyclines against various pathogens and disease conditions.
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Sicchieri LB, de Andrade Natal R, Courrol LC. Fluorescent lifetime imaging microscopy using Europium complexes improves atherosclerotic plaques discrimination. Int J Cardiovasc Imaging 2016; 32:1595-604. [PMID: 27412686 DOI: 10.1007/s10554-016-0936-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Accepted: 07/05/2016] [Indexed: 01/12/2023]
Abstract
The objective of this study is to characterize arterial tissue with and without atherosclerosis by fluorescence lifetime imaging microscopy (FLIM) using Europium Chlortetracycline complex (EuCTc) as fluorescent marker. For this study, twelve rabbits were randomly divided into a control group (CG) and an experimental group (EG), where they were fed a normal and hypercholesterolemic diet, respectively, and were treated for 60 days. Cryosections of the aortic arch specimens were cut in a vertical plane, mounted on glass slides, and stained with Europium (Eu), Chlortetracycline (CTc), Europium Chlortetracycline (EuCTc), and Europium Chlortetracycline Magnesium (EuCTcMg) solutions. FLIM images were obtained with excitation at 405 nm. The average autofluorescence lifetime within plaque depositions was ~1.36 ns. Reduced plaque autofluorescence lifetimes of 0.23 and 0.31 ns were observed on incubation with EuCTc and EuCTcMg respectively. It was observed a quenching of collagen, cholesterol and TG emission spectra increasing EuCTc concentration. The drastic reduction in fluorescence lifetimes is due to a resonant energy transfer between collagen, triglycerides, cholesterol and europium complexes, quenching fluorescence.
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Affiliation(s)
- Letícia Bonfante Sicchieri
- Center of Lasers and Applications, Institute of Energy and Nuclear Research, São Paulo University, São Paulo, Brazil
| | - Rodrigo de Andrade Natal
- Departments of Pathology, Faculty of Medical Sciences, State University of Campinas, Campinas, São Paulo, Brazil
| | - Lilia Coronato Courrol
- Center of Lasers and Applications, Institute of Energy and Nuclear Research, São Paulo University, São Paulo, Brazil. .,Department of Exact and Earth Sciences, Federal University of São Paulo, Diadema, São Paulo, Brazil.
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Soori MM, Ghahramani E, Kazemian H, Al-Musawi TJ, Zarrabi M. Intercalation of tetracycline in nano sheet layered double hydroxide: An insight into UV/VIS spectra analysis. J Taiwan Inst Chem Eng 2016. [DOI: 10.1016/j.jtice.2016.03.015] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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17
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Fan HT, Shi LQ, Shen H, Chen X, Xie KP. Equilibrium, isotherm, kinetic and thermodynamic studies for removal of tetracycline antibiotics by adsorption onto hazelnut shell derived activated carbons from aqueous media. RSC Adv 2016. [DOI: 10.1039/c6ra23346e] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Hazelnut shell, an agricultural waste, was used to prepare activated carbons by phosphoric acid activation.
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Affiliation(s)
- Hong-Tao Fan
- College of Applied Chemistry
- Shenyang University of Chemical Technology
- Shenyang
- China
| | - Li-Qi Shi
- College of Applied Chemistry
- Shenyang University of Chemical Technology
- Shenyang
- China
| | - Hua Shen
- College of Applied Chemistry
- Shenyang University of Chemical Technology
- Shenyang
- China
| | - Xi Chen
- School of Life Science
- Liaoning Normal University
- Dalian
- China
| | - Kun-Peng Xie
- School of Life Science
- Liaoning Normal University
- Dalian
- China
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Vedenyapina MD, Borisova DA, Strel’tsova ED, Rakishev AK, Vedenyapin AA. Electrochemical degradation and mineralization of tetracycline on a boron-doped diamond electrode. Russ Chem Bull 2014. [DOI: 10.1007/s11172-014-0674-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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19
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Mojica ERE, Nguyen E, Rozov M, Bright FV. pH-Dependent Spectroscopy of Tetracycline and Its Analogs. J Fluoresc 2014; 24:1183-98. [DOI: 10.1007/s10895-014-1399-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Accepted: 04/23/2014] [Indexed: 10/25/2022]
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20
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Volkov V, Righini R. Structural analysis of neutral tetracycline using anharmonicity of delocalized vibrations. Phys Chem Chem Phys 2014; 16:5655-60. [PMID: 24518961 DOI: 10.1039/c3cp54271h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
While tetracyclines are in active medical use, their bioactive atomic compositions are still questionable. Here, we investigate the structural properties of neutral tetracycline in dimethyl sulfoxide - the environment used often to mimic the environment in vivo. We compare the measured linear and nonlinear infrared spectra to those calculated for a collection of stable and energetically plausible tautomers, and describe the structurally sensitive off-diagonal peaks using anharmonicities of the normal modes. The comparison of experimental and theoretical 2DIR spectra is consistent with the numerical predictions of statistical thermodynamics on the relative weights of possible tautomers. In result, we provide the systematic account of the structural realizations of neutral tetracycline in DMSO.
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Affiliation(s)
- V Volkov
- Max Planck Institute for Polymer Research, Ackermannweg, 10, 55128 Mainz, Germany.
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21
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Simultaneous determination of 14 sulfonamides and tetracyclines in biogas plants by liquid-liquid-extraction and liquid chromatography tandem mass spectrometry. Anal Bioanal Chem 2014; 406:2513-24. [DOI: 10.1007/s00216-014-7649-3] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2013] [Revised: 01/10/2014] [Accepted: 01/21/2014] [Indexed: 11/25/2022]
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22
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Schönfeld P, Siemen D, Kreutzmann P, Franz C, Wojtczak L. Interaction of the antibiotic minocycline with liver mitochondria - role of membrane permeabilization in the impairment of respiration. FEBS J 2013; 280:6589-99. [DOI: 10.1111/febs.12563] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2013] [Revised: 08/29/2013] [Accepted: 10/01/2013] [Indexed: 11/29/2022]
Affiliation(s)
- Peter Schönfeld
- Institute of Biochemistry and Cell Biology; Otto-von-Guericke-University; Magdeburg Germany
| | - Detlef Siemen
- Department of Neurology; Otto-von-Guericke-University; Magdeburg Germany
| | - Peter Kreutzmann
- Institute of Biochemistry and Cell Biology; Otto-von-Guericke-University; Magdeburg Germany
| | - Claudia Franz
- Institute of Biochemistry and Cell Biology; Otto-von-Guericke-University; Magdeburg Germany
| | - Lech Wojtczak
- Nencki Institute of Experimental Biology; Warsaw Poland
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23
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Niu J, Li Y, Wang W. Light-source-dependent role of nitrate and humic acid in tetracycline photolysis: kinetics and mechanism. CHEMOSPHERE 2013; 92:1423-1429. [PMID: 23618345 DOI: 10.1016/j.chemosphere.2013.03.049] [Citation(s) in RCA: 82] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2012] [Revised: 03/11/2013] [Accepted: 03/25/2013] [Indexed: 06/02/2023]
Abstract
To elucidate the environmental fate of tetracycline (TC), we reported the light-source-dependent dual effects of humic acid (HA) and NO3(-) on TC photolysis. TC photolysis rate was highly pH- and concentration-dependent, and was especially enhanced at higher pH and lower initial TC concentrations. Under UV-254 and UV-365 irradiation, HA inhibited TC photolysis through competitive photoabsorption or reactive oxygen species (ROS) quenching with TC; under solar and xenon lamp irradiation, TC photolysis was enhanced at low HA concentration due to its photosensitization, whereas was suppressed at high HA concentration due to competitive photoabsorption or ROS quenching with TC. Similarly, the effect of NO3(-) on TC photolysis varied with light irradiation conditions. Even under the same light irradiation conditions, the effects of HA or NO3(-) on TC photolysis varied with their concentrations. The electron spin resonance spectrometer and ROS scavenger experiments demonstrated that TC photolysis was involved in O2(-)-mediated self-sensitized photolysis. The photolysis pathways were involved in hydroxylation and loss of some groups. More toxic intermediates than TC were generated under different light irradiation conditions. These results can provide insight into the potential fate and transformation of TC in surficial waters.
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Affiliation(s)
- Junfeng Niu
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, PR China.
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24
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Wach A, Chen J, Falls Z, Lonie D, Mojica ER, Aga D, Autschbach J, Zurek E. Determination of the Structures of Molecularly Imprinted Polymers and Xerogels Using an Automated Stochastic Approach. Anal Chem 2013; 85:8577-84. [DOI: 10.1021/ac402004z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Amanda Wach
- Department of Chemistry,
University at Buffalo, State University of New York, Buffalo, New York 14260-3000,
United States
| | - Jiechen Chen
- Department of Chemistry,
University at Buffalo, State University of New York, Buffalo, New York 14260-3000,
United States
| | - Zackary Falls
- Department of Chemistry,
University at Buffalo, State University of New York, Buffalo, New York 14260-3000,
United States
| | - David Lonie
- Department of Chemistry,
University at Buffalo, State University of New York, Buffalo, New York 14260-3000,
United States
| | - Elmer-Rico Mojica
- Department of Chemistry,
University at Buffalo, State University of New York, Buffalo, New York 14260-3000,
United States
| | - Diana Aga
- Department of Chemistry,
University at Buffalo, State University of New York, Buffalo, New York 14260-3000,
United States
| | - Jochen Autschbach
- Department of Chemistry,
University at Buffalo, State University of New York, Buffalo, New York 14260-3000,
United States
| | - Eva Zurek
- Department of Chemistry,
University at Buffalo, State University of New York, Buffalo, New York 14260-3000,
United States
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25
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Garcia-Rodríguez A, Matamoros V, Fontàs C, Salvadó V. The influence of light exposure, water quality and vegetation on the removal of sulfonamides and tetracyclines: a laboratory-scale study. CHEMOSPHERE 2013; 90:2297-2302. [PMID: 23121988 DOI: 10.1016/j.chemosphere.2012.09.092] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2012] [Revised: 09/25/2012] [Accepted: 09/27/2012] [Indexed: 06/01/2023]
Abstract
The effect of aquatic vegetation (Spyrogira sp. and Zannichellia palustris), light exposure and water quality (secondary-treated wastewater vs. ultrapure water) on the removal efficiency of six antibiotics (sulfonamides and tetracyclines) is studied in laboratory-scale reactors. After 20 d of treatment, 3-59% of sulfonamides were eliminated in the reactors exposed to light. Removal was about 10% in unplanted reactors in darkness. The elimination of tetracycline (TC) and oxytetracycline (OTC) ranged between 83% and 97% in both planted and unplanted reactors. However, in dark unplanted reactors, OTC was largely removed (88%) while only 15% of TC was eliminated. These results suggest that TC was mainly removed by photodegradation whereas biodegradation or hydrolysis process seems to be significant processes for OTC. Sulfonamides were mainly eliminated by biodegradation or indirect photodegradation processes. Pseudo-first order kinetics removal rates ranged from 0.003 and 0.007 d(-1) for Sulfamethazine and TC in the covered control reactors to 0.13 and 0.21 d(-1) for TC and OTC in the uncovered control reactors, with half-lives from 3 to 350 d. A TC photodegradation product was tentatively identified in uncovered reactors. This study highlights the important role played by light exposure in the elimination of antibiotics in polishing ponds.
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Affiliation(s)
- Aida Garcia-Rodríguez
- Department of Chemistry, University of Girona, Campus Montilivi, E-17071 Girona, Spain
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26
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Kreutzmann P, Franz C, Schönfeld P. Minocycline forms complexes with manganese in vitro: explaining reported beneficial effects in manganese treated Drosophila melanogaster. Toxicology 2012; 300:100-1. [PMID: 22561279 DOI: 10.1016/j.tox.2012.04.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2012] [Accepted: 04/20/2012] [Indexed: 11/30/2022]
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27
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Wang Y, Zhang H, Chen L, Wang S, Zhang D. Ozonation combined with ultrasound for the degradation of tetracycline in a rectangular air-lift reactor. Sep Purif Technol 2012. [DOI: 10.1016/j.seppur.2011.06.035] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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28
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Wammer KH, Slattery MT, Stemig AM, Ditty JL. Tetracycline photolysis in natural waters: loss of antibacterial activity. CHEMOSPHERE 2011; 85:1505-1510. [PMID: 21959143 DOI: 10.1016/j.chemosphere.2011.08.051] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2011] [Revised: 08/27/2011] [Accepted: 08/31/2011] [Indexed: 05/31/2023]
Abstract
Previous work has shown that tetracycline undergoes direct photolysis in the presence of sunlight, with the decomposition rate highly dependent on conditions such as water hardness and pH. The purpose of this study was to examine the potential long-term significance of photoproducts formed when tetracycline undergoes photodegradation under a range of environmentally relevant conditions. Tetracycline was photolyzed in nine different natural and artificial water samples using simulated sunlight. The pH values of the samples ranged from 5 to 9. Total hardness values (combined Ca(2+) and Mg(2+) concentrations) varied from 30 to 450 ppm. Assays based on growth inhibition of two bacterial strains, Escherichia coli DH5α and Vibrio fischeri, were used to determine the antibacterial activity of tetracycline's photoproducts in these water samples. In all tested conditions, it was determined that the photoproducts retain no significant antibacterial activity; all observed growth inhibition was attributable to residual tetracycline. This suggests that tetracycline photoproducts formed under a wide range of pH and water hardness conditions will not contribute to the selection of antibiotic-resistant bacteria in environmental systems.
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Affiliation(s)
- Kristine H Wammer
- Department of Chemistry, University of St. Thomas, 2115 Summit Ave., St. Paul, MN 55105, USA.
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29
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Wang Y, Zhang H, Chen L. Ultrasound enhanced catalytic ozonation of tetracycline in a rectangular air-lift reactor. Catal Today 2011. [DOI: 10.1016/j.cattod.2011.06.001] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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30
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Wang Y, Zhang H, Zhang J, Lu C, Huang Q, Wu J, Liu F. Degradation of tetracycline in aqueous media by ozonation in an internal loop-lift reactor. JOURNAL OF HAZARDOUS MATERIALS 2011; 192:35-43. [PMID: 21616591 DOI: 10.1016/j.jhazmat.2011.04.086] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2010] [Revised: 04/02/2011] [Accepted: 04/19/2011] [Indexed: 05/30/2023]
Abstract
The degradation of tetracycline by ozone was investigated in this paper. In the laboratory scale experiments, the effect of major parameters, including pH, gas flow rate, gaseous ozone concentration, hydrogen peroxide concentration and hydroxyl radical scavenger (tert-butyl alcohol) on the degradation of tetracycline was studied. A pseudo-first order kinetic model was used to simulate the experimental results. The results indicated that the tetracycline degradation rate increased with pH, gaseous ozone concentration and gas flow rate. The addition of hydrogen peroxide or hydroxyl radical scavenger had little effect on tetracycline removal, indicating that the direct oxidation of tetracycline by ozone was dominant process and the radical contribution to the tetracycline oxidation could be neglected. The main intermediates were separated and identified as well as the simple degradation pathway of tetracycline was proposed. The COD removal reached to 35% after 90 min reaction. The acute toxicity experiments illustrated that the Daphnia magna mortality reached the maximum after 25 min ozonation and then decreased to zero after 90 min ozonation.
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Affiliation(s)
- Yan Wang
- Department of Environmental Engineering, Wuhan University, P.O. Box C319, Luoyu Road 129#, Wuhan 430079, China
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31
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Volkers G, Petruschka L, Hinrichs W. Recognition of drug degradation products by target proteins: isotetracycline binding to Tet repressor. J Med Chem 2011; 54:5108-15. [PMID: 21699184 DOI: 10.1021/jm200332e] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Tetracycline antibiotics and their degradation products appear in medically treated tissues, food, soil, and manure sludge in the environment. In the context of protein interactions with various tetracyclines we performed crystal structure analyses of the tetracycline repressor in complex with weak or noninducing tetracycline derivatives. Isotetracyclines are degradation products of tetracyclines, which occur under physiological conditions. The typical framework of the antibiotic is irreversibly broken at the BC-ring connection, leading to a modified orientation of the AB to the new C*D ring fragments. The shape of the zwitterionic AB-ring fragment is unchanged and still binds to the TetR recognition site in a manner comparable to the intact antibiotic but without typical Mg(2+) chelation. This work is an example that drug degradation products can still bind to specific targets and should be discussed in light of potential and critical side effects.
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Affiliation(s)
- Gesa Volkers
- Department of Molecular Structural Biology, Institute for Biochemistry, University of Greifswald, Felix-Hausdorff-Strasse 4, D-17489 Greifswald, Germany
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32
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Chemical and structural biology of nucleic acids and protein-nucleic acid complexes for novel drug discovery. Sci China Chem 2011. [DOI: 10.1007/s11426-010-4174-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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33
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Chen Y, Li H, Wang Z, Tao T, Hu C. Photoproducts of tetracycline and oxytetracycline involving self-sensitized oxidation in aqueous solutions: effects of Ca2+ and Mg2+. J Environ Sci (China) 2011; 23:1634-1639. [PMID: 22432258 DOI: 10.1016/s1001-0742(10)60625-0] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Tetracyclines constitute one of the most important antibiotic families and represent a classic example of phototoxicity. The photoproducts of tetracyclines and their parent compounds have potentially adverse effects on natural ecosystem. In this study, the self-sensitized oxidation products of tetracycline (TC) and oxytetracycline (OTC) were determined and the effects of Ca2+ and Mg2+ on self-sensitized degradation were investigated. The Ca2+ and Mg2+ in the natural water sample accounted for enhancement (pH 7.3) and inhibition (pH 9.0) of photodegradation of TC and OTC due to the formation of metal-ions complexes. The formation of Mg2+ complexes was unfavorable for the photodegradation of the tetracyclines at both pH values. In contrast, the Ca2+ complexes facilitated the attack of singlet oxygen (1O2) arising from self-sensitization at pH 7.3 and enhanced TC photodegradation. For the first time, self-sensitized oxidation products of TC and OTC were verified by quenching experiments and detected by LC/ESI-DAD-MS. The products had a nominal mass 14 Da higher than the parent drugs (designated M+14), which resulted from the 1O2 attack of the dimethylamino group on the C-4 atom of the tetracyclines. The presence of Ca2+ and Mg2+ also affected the generation of M+14 due to the formation of metal-ions complexes with TC and OTC. The findings suggest that the metal-ion complexation has significant impact on the self-sensitized oxidation processes and the photoproducts of tetracyclines.
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Affiliation(s)
- Yong Chen
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
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34
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Burgos MI, Fernández RA, Celej MS, Rossi LI, Fidelio GD, Dassie SA. Binding of the Highly Toxic Tetracycline Derivative, Anhydrotetracycline, to Bovine Serum Albumin. Biol Pharm Bull 2011; 34:1301-6. [DOI: 10.1248/bpb.34.1301] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Martha Ines Burgos
- Departamento de Química Biológica-Centro de Investigaciones en Química Biológica de Córdoba (CIQUIBIC), Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria
| | - Ricardo Ariel Fernández
- Departamento de Fisicoquímica-Instituto de Investigaciones en Fisicoquímica de Córdoba (INFIQC), Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria
| | - María Soledad Celej
- Departamento de Química Biológica-Centro de Investigaciones en Química Biológica de Córdoba (CIQUIBIC), Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria
| | - Laura Isabel Rossi
- Departamento de Química Orgánica-Instituto de Investigaciones en Fisicoquímica de Córdoba (INFIQC), Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria
| | - Gerardo Daniel Fidelio
- Departamento de Química Biológica-Centro de Investigaciones en Química Biológica de Córdoba (CIQUIBIC), Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria
| | - Sergio Alberto Dassie
- Departamento de Fisicoquímica-Instituto de Investigaciones en Fisicoquímica de Córdoba (INFIQC), Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria
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35
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Mojica ERE, Autschbach J, Bright FV, Aga DS. Tetracycline speciation during molecular imprinting in xerogels results in class-selective binding. Analyst 2011; 136:749-55. [DOI: 10.1039/c0an00707b] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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36
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Jantratid E, Strauch S, Becker C, Dressman J, Amidon G, Junginger H, Kopp S, Midha K, Shah V, Stavchansky S, Barends D. Biowaiver monographs for immediate release solid oral dosage forms: Doxycycline hyclate**A project of the International Pharmaceutical Federation (FIP), BCS and Biowaiver, www.fip.org/bcs.**This article reflects the scientific opinion of the authors and not the policies of regulating agencies, the International Pharmaceutical Federation (FIP) and the World Health Organization (WHO). J Pharm Sci 2010; 99:1639-53. [DOI: 10.1002/jps.21954] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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37
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Investigation of the Europium Emission Spectra of the Europium-Oxytetracycline Complex in the Presence of Human Low-Density Lipoproteins. J Fluoresc 2010; 21:887-92. [DOI: 10.1007/s10895-010-0602-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2009] [Accepted: 01/29/2010] [Indexed: 10/19/2022]
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38
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Enhancement on the Europium emission band of Europium chlortetracycline complex in the presence of LDL. Anal Biochem 2010; 400:19-24. [PMID: 20117070 DOI: 10.1016/j.ab.2010.01.030] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2009] [Revised: 12/29/2009] [Accepted: 01/24/2010] [Indexed: 01/16/2023]
Abstract
Low-density lipoprotein (LDL) particles are the major cholesterol-carrying lipoprotein in the human circulation from the liver to peripheral tissues. High levels of LDL-Cholesterol (LDL-C) are known risk factor for the development of coronary artery disease (CAD). The most common approach to determine the LDL-C in the clinical laboratory involves the Friedewald formula. However, in certain situations, this approach is inadequate. In this paper we report on the enhancement on the Europium emission band of Europium chlortetracycline complex (CTEu) in the presence of LDL. The emission intensity at 615 nm of the CTEu increases with increasing amounts of LDL. This phenomenon allowed us to propose a method to determine the LDL concentration in a sample composed by an aqueous solution of LDL. With this result we obtained LDL calibration curve, LOD (limit of detection) of 0.49 mg/mL and SD (standard deviation) of 0.003. We observed that CTEu complex provides a wider dynamic concentration-range for LDL determination than that from Eu-tetracycline previously. The averaged emission lifetimes of the CTEu and CTEu with LDL (1.5 mg/mL) complexes were measured as 15 and 46 micros, respectively. Study with some metallic interferents is presented.
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Tan M, Zhu J, Pan Y, Chen Z, Liang H, Liu H, Wang H. Synthesis, cytotoxic activity, and DNA binding properties of copper (II) complexes with hesperetin, naringenin, and apigenin. Bioinorg Chem Appl 2009; 2009:347872. [PMID: 19830248 PMCID: PMC2760321 DOI: 10.1155/2009/347872] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2009] [Revised: 07/28/2009] [Accepted: 08/04/2009] [Indexed: 11/17/2022] Open
Abstract
Complexes of copper (II) with hesperetin, naringenin, and apigenin of general composition [CuL(2)(H(2)O)(2)] nH(2)O (1-3) have been synthesized and characterized by elemental analysis, UV-Vis, FT-IR, ESI-MS, and TG-DTG thermal analysis. The free ligands and the metal complexes have been tested in vitro against human cancer cell lines hepatocellular carcinoma (HepG-2), gastric carcinomas (SGC-7901), and cervical carcinoma (HeLa). Complexes 1 and 3 were found to exhibit growth inhibition of SGC-7901 and HepG2 cell lines with respect to the free ligands; the inhibitory rate of complex 1 is 43.2% and 43.8%, while complex 3 is 46% and 36%, respectively. The interactions of complex 1 and its ligand Hsp with calf thymus DNA were investigated by UV-Vis, fluorescence, and CD spectra. Both complex 1 and Hsp were found to bind DNA in intercalation modes, and the binding affinity of complex 1 was stronger than that of free ligand.
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Affiliation(s)
- Mingxiong Tan
- The Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry & Chemical Engineering, Guangxi Normal University, Guilin 541004, China
- Department of Chemistry and Biology, Yulin Normal College, Yulin 537000, China
| | - Jinchan Zhu
- The Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry & Chemical Engineering, Guangxi Normal University, Guilin 541004, China
| | - Yingming Pan
- The Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry & Chemical Engineering, Guangxi Normal University, Guilin 541004, China
| | - Zhenfeng Chen
- The Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry & Chemical Engineering, Guangxi Normal University, Guilin 541004, China
| | - Hong Liang
- The Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry & Chemical Engineering, Guangxi Normal University, Guilin 541004, China
| | - Huagang Liu
- Department of Pharmacology, Guangxi Medical University, Nanning 530021, China
| | - Hengshan Wang
- The Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry & Chemical Engineering, Guangxi Normal University, Guilin 541004, China
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40
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Kupsch K, Hertel S, Kreutzmann P, Wolf G, Wallesch CW, Siemen D, Schönfeld P. Impairment of mitochondrial function by minocycline. FEBS J 2009; 276:1729-38. [PMID: 19243427 DOI: 10.1111/j.1742-4658.2009.06904.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
There is an ongoing debate on the presence of beneficial effects of minocycline (MC), a tetracycline-like antibiotic, on the preservation of mitochondrial functions under conditions promoting mitochondria-mediated apoptosis. Here, we present a multiparameter study on the effects of MC on isolated rat liver mitochondria (RLM) suspended either in a KCl-based or in a sucrose-based medium. We found that the incubation medium used strongly affects the response of RLM to MC. In KCl-based medium, but not in sucrose-based medium, MC triggered mitochondrial swelling and cytochrome c release. MC-dependent swelling was associated with mitochondrial depolarization and a decrease in state 3 as well as uncoupled respiration. Swelling of RLM in KCl-based medium indicates that MC permeabilizes the inner mitochondrial membrane (IMM) to K(+) and Cl(-). This view is supported by our findings that MC-induced swelling in the KCl-based medium was partly suppressed by N,N'-dicyclohexylcarbodiimide (an inhibitor of IMM-linked K(+)-transport) and tributyltin (an inhibitor of the inner membrane anion channel) and that swelling was less pronounced when RLM were suspended in choline chloride-based medium. In addition, we observed a rapid MC-induced depletion of endogenous Mg(2+) from RLM, an event that is known to activate ion-conducting pathways within the IMM. Moreover, MC abolished the Ca(2+) retention capacity of RLM irrespective of the incubation medium used, most likely by triggering permeability transition. In summary, we found that MC at low micromolar concentrations impairs several energy-dependent functions of mitochondria in vitro.
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Affiliation(s)
- Kathleen Kupsch
- Institute of Biochemistry and Cell Biology, Otto-von-Guericke University Magdeburg, Magdeburg, Germany.
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41
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Electroanalytical procedure to resolve a sample solution containing tetracycline and its toxic degraded product: Anhydrotetracycline. J Electroanal Chem (Lausanne) 2008. [DOI: 10.1016/j.jelechem.2008.08.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Fernández R, Dassie S. Transfer of tetracyclines across the H2O|1,2-dichloroethane interface: Analysis of degraded products in strong acid and alkaline solutions. J Electroanal Chem (Lausanne) 2005. [DOI: 10.1016/j.jelechem.2005.08.015] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Dürkop A, Wolfbeis OS. Nonenzymatic Direct Assay of Hydrogen Peroxide at Neutral pH Using the Eu3Tc Fluorescent Probe. J Fluoresc 2005; 15:755-61. [PMID: 16341794 DOI: 10.1007/s10895-005-2984-6] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2005] [Accepted: 07/17/2005] [Indexed: 10/25/2022]
Abstract
A detailed study is presented on the use of an easily accessible probe (the europium-tetracycline 3:1 complex; referred to as Eu3Tc) for determination of hydrogen peroxide (HP). Eu3Tc undergoes a 15-fold increase in luminescence intensity on exposure to an excess of HP. Data are given on the time dependence of the reaction, on the pH dependence of the absorption and emission spectra of both the probe and its complex with HP, and on the effect of stoichiometry between Eu3+ and Tc on selectivity and signal change. HP can be quantified in aqueous solution of pH 6.9 over a 2-400 microM concentration range with a limit of detection of 960 nM. The assay is validated using standard additions, and mean recoveries are found to be between 97.0 and 101.8%. Species that interfere in concentrations below 1 mM include phosphate, copper(II), fluoride and citrate. The addition of detergents causes the response curves towards HP to shift to higher HP concentrations. The method is critically assessed with respect to other common optical methods for determination of HP.
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Affiliation(s)
- Axel Dürkop
- Institute of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, Universitätsstrasse 31, 93040, Regensburg, Germany.
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Avery AM, Goddard HJ, Sumner ER, Avery SV. Iron blocks the accumulation and activity of tetracyclines in bacteria. Antimicrob Agents Chemother 2004; 48:1892-4. [PMID: 15105154 PMCID: PMC400538 DOI: 10.1128/aac.48.5.1892-1894.2004] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The apparent sensitivities of several bacterial pathogens to tetracyclines varied by up to 128-fold with the medium content of Fe, but not of other metals. The effect of Fe was independent of superoxide dismutase activity and of intracellular Fe, but accumulation of tetracyclines was blocked in high-Fe medium. Thus, synergistic suppression of bacterial growth in the presence of a low Fe concentration and tetracyclines arises because of elevated antibiotic accumulation.
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Affiliation(s)
- Angela M Avery
- School of Biology, University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom
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Miyazaki T, Yomota C, Okada S. Hyaluronate depolymerization following thermal decomposition of oxytetracycline. Chem Pharm Bull (Tokyo) 2001; 49:118-22. [PMID: 11201216 DOI: 10.1248/cpb.49.118] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Depolymerization of sodium hyaluronate (HA) by tetracyclines was investigated. Reduction in HA molecular weight was followed by size exclusion chromatography with a low angle laser light scattering detector. On mixing with oxytetracycline hydrochloride (OTC) solution and incubating at 37 degrees C, HA was gradually depolymerized. OTC, a representative antibiotic, is known as a photosensitizer, and phototoxic side effects relevant to radicals have been reported. However, HA depolymerization required no irradiation. As time passed, OTC solution incubated at 37 degrees C got colored reddish brown, even in the dark. With reversed-phase HPLC separation, several peaks derived from decomposed OTC appeared. One of the peaks had an absorbance in the visible range. A quantitative correlation between the discoloration and the HA depolymerization rate was obtained. On the other hand, when samples were incubated below 25 degrees C, change of color was slight, and practically no HA depolymerization was observed after up to 4 h. Oxygen depletion by nitrogen saturation or addition of mannitol also prevented the depolymerization. Under anaerobic conditions, the color of the solution did not change, whereas it turned red under aerobic conditions in the presence of mannitol. The mannitol did not inhibit the OTC decomposition, but it preserved HA from damage. On the basis of the known decomposition of OTC and the results of HPLC separation, anhydrooxytetracycline can be proposed as the derivative causing HA depolymerization.
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Affiliation(s)
- T Miyazaki
- National Institute of Health Sciences, Osaka, Japan.
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47
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Stork G, La Clair JJ, Spargo P, Nargund RP, Totah N. Stereocontrolled Synthesis of (±)-12a-Deoxytetracycline. J Am Chem Soc 1996. [DOI: 10.1021/ja960434n] [Citation(s) in RCA: 54] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Gilbert Stork
- Department of Chemistry, Columbia University New York, New York 10027
| | - James J. La Clair
- Department of Chemistry, Columbia University New York, New York 10027
| | - Peter Spargo
- Department of Chemistry, Columbia University New York, New York 10027
| | - Ravi P. Nargund
- Department of Chemistry, Columbia University New York, New York 10027
| | - Nancy Totah
- Department of Chemistry, Columbia University New York, New York 10027
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48
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Rubinov DB, Rubinova IL, Akhrem AA. 2-Acylcycloalkane-1,3-diones. Occurrence in nature, biological activity, biogenesis, chemical synthesis. Chem Nat Compd 1995. [DOI: 10.1007/bf01164877] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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49
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Yamaguchi A, Ohmori H, Kaneko-Ohdera M, Nomura T, Sawai T. Delta pH-dependent accumulation of tetracycline in Escherichia coli. Antimicrob Agents Chemother 1991; 35:53-6. [PMID: 2014981 PMCID: PMC244940 DOI: 10.1128/aac.35.1.53] [Citation(s) in RCA: 66] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The effects of ionophores on tetracycline accumulation in Escherichia coli cells were investigated in the presence of polymyxin B nonapeptide. Accumulation was inhibited by nigericin but not by valinomycin. Tetracycline accumulation was stimulated by decreasing the pH of the medium and inhibited by the addition of magnesium ions. These results indicated that tetracycline enters cells through diffusion as a protonated form (TH2) and is accumulated as a membrane-impermeable magnesium-tetracycline chelate complex (THMg+). This noncarrier diffusion hypothesis was confirmed by the fact that tetracycline accumulated in protein-free liposomes through an artificially imposed pH difference.
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Affiliation(s)
- A Yamaguchi
- Division of Microbial Chemistry, Faculty of Pharmaceutical Sciences, Chiba University, Japan
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50
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Sokolić M, Filipović B, Pokorny M. High-performance liquid chromatographic procedures in monitoring the production and quality control of chlortetracycline. J Chromatogr A 1990. [DOI: 10.1016/s0021-9673(01)93252-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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