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Exploration of fluoroquinolone-induced retinal pigment epithelium layer changes in the pathogenesis of macular degeneration. Photodiagnosis Photodyn Ther 2022; 39:103013. [PMID: 35820634 DOI: 10.1016/j.pdpdt.2022.103013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 06/22/2022] [Accepted: 07/08/2022] [Indexed: 11/21/2022]
Abstract
PURPOSE Fluoroquinolone toxicity studies in animals (cats, rabbits and mice) showed that acute retinal degenerations appear clinically related to phototoxicity. The aim of this study was to evaluate the association between the administration of oral fluoroquinolone and the onset of clinically or subclinically detectable acute retinal degeneration in humans. MATERIAL AND METHODS This study included patients that received oral fluoroquinolone treatment (ciprofloxacin, levofloxacin or moxifloxacin) for variable systemic diseases diagnosed by the Department of Urology and Infectious Diseases (study group, n=76), and age and sex matched otherwise healthy subjects (control group, n=50). All the subjects underwent a detailed ophthalmologic examination including tests for visual acuity, intraocular pressures, color vision, photostress recovery time and contrast sensitivity measurements, central foveal thickness, subfoveal choroidal thickness, ganglion cell complex thickness and 10/2 Humphrey visual field test. Color fundus and fundus autofluorescence photographs were also obtained. Examinations and tests were repeated at 1st week and 1st month in the study group. RESULTS There was no statistically significant difference among visual acuity, intraocular pressure, photostress recovery time, color vision, contrast sensitivity measurements, central foveal thickness, subfoveal choroidal thickness, average ganglion cell complex thickness, superior ganglion cell complex thickness, inferior ganglion cell complex thickness, focal loss volume, global loss volume, mean deviation, pattern standard deviation values in treatment group at baseline, 1st week and 1st month (p > 0.05, for the comparison of each parameters). There was not any alteration among color fundus and fundus autofluorescence photographs obtained at baseline, 1st week and 1st month in treatment group. All parameters within the study and control groups were similar throughout the study period (p > 0.05, for the comparison of each parameter). CONCLUSION This study evaluated the association between the administration of oral fluoroquinolone and the onset of acute retinal degeneration. Preliminary results of this study showed that use of oral fluoroquinolone had no detectable impact on retinal degeneration at acute phase.
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Anaya-Gonzalez C, Soldevila S, Garcia-Lainez G, Bosca F, Andreu I. Chemical tuning for potential antitumor fluoroquinolones. Free Radic Biol Med 2019; 141:150-158. [PMID: 31195085 DOI: 10.1016/j.freeradbiomed.2019.06.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 06/05/2019] [Accepted: 06/07/2019] [Indexed: 12/12/2022]
Abstract
Phototoxic effects of 6,8 dihalogenated quinolones confers to this type of molecules a potential property as photochemotherapeutic agents. Two photodehalogenation processes seem to be involved in the remarkable photoinduced cellular damage. In this context, a new 6,8 dihalogenated quinolone 1 (1-methyl-6,8-difluoro-4-oxo-7-aminodimethyl-1,4-dihydroquinoline-3-carboxylic acid) was synthetized looking for improving the phototoxic properties of fluoroquinolones (FQ) and to determine the role of the photodegradation pathways in the FQ phototoxicity. With this purpose, fluorescence emissions, laser flash photolysis experiments and photodegradation studies were performed with compound 1 using 1-ethyl-6,8-difluoro-4-oxo-7-aminodimethyl-1,4-dihidroquinoline-3-carboxylic acid (2) and lomefloxacin (LFX) as reference compounds. The shortening of alkyl chain of the N(1) of the quinolone ring revealed a lifetime increase of the reactive aryl cation generated from photolysis of the three FQ and a significant reduction of the FQ photodegradation quantum yield. The fact that these differences were smaller when the same study was done using a hydrogen donor solvent (ethanol-aqueous buffer, 50/50 v/v) evidenced the highest ability of the reactive intermediate arising from 1 to produce intermolecular alkylations. These results were correlated with in vitro 3T3 NRU phototoxicity test. Thus, when Photo-Irritation-Factor (PIF) was determined for 1, 2 and LFX using cytotoxicity profiles of BALB/c 3T3 fibroblasts treated with each compound in the presence and absence of UVA light, a PIF more higher than 30 was obtained for 1 while the values for 2 and LFX were only higher than 8 and 10, respectively. Thereby, the present study illustrates an approach to modulate the photosensitizing properties of FQ with the purpose to improve the chemotherapeutic properties of antitumor quinolones. Moreover, the results obtained in this study also evidence that the key pathway responsible for the phototoxic properties associated with dihalogenated quinolones is the aryl cation generation.
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Affiliation(s)
- Cristina Anaya-Gonzalez
- Instituto Mixto de Tecnología Química. Consejo Superior de Investigaciones Científicas/Universidad Politécnica de Valencia (CSIC/UPV) Avd. Los Naranjos s/n, 46022, Valencia, Spain
| | - Sonia Soldevila
- Instituto Mixto de Tecnología Química. Consejo Superior de Investigaciones Científicas/Universidad Politécnica de Valencia (CSIC/UPV) Avd. Los Naranjos s/n, 46022, Valencia, Spain
| | - Guillermo Garcia-Lainez
- Instituto de Investigación Sanitaria (IIS) La Fe, Hospital Universitari i Politècnic La Fe, Avenida de Fernando Abril Martorell 106, 46026, Valencia, Spain
| | - Francisco Bosca
- Instituto Mixto de Tecnología Química. Consejo Superior de Investigaciones Científicas/Universidad Politécnica de Valencia (CSIC/UPV) Avd. Los Naranjos s/n, 46022, Valencia, Spain.
| | - Inmaculada Andreu
- Instituto de Investigación Sanitaria (IIS) La Fe, Hospital Universitari i Politècnic La Fe, Avenida de Fernando Abril Martorell 106, 46026, Valencia, Spain; Unidad Mixta de Investigación UPV-Instituto de Investigación Sanitaria (IIS) La Fe, Hospital Universitari i Politècnic La Fe, Avenida de Fernando Abril Martorell 106, 46026, Valencia, Spain
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Méndez E, González-Fuentes MA, Rebollar-Perez G, Méndez-Albores A, Torres E. Emerging pollutant treatments in wastewater: Cases of antibiotics and hormones. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2017; 52:235-253. [PMID: 27901630 DOI: 10.1080/10934529.2016.1253391] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Because of the intensive use of pharmaceutical substances in human life, studies on the detection of these chemical compounds and their metabolites as pollutants in water bodies are continuously reported. Some pharmaceutical agents are associated with adverse effects to aquatic life, even at very low concentrations (ng L-1 to μg L-1). For instance, the presence of antibiotics and hormones has been associated with increasing proliferation of antibiotic resistant pathogens and feminization and masculinization of some aquatic organisms. Currently, new attempts are being made to minimize or fully remove these types of pollutants from aquatic systems to protect the environment and human health. In this regard, physicochemical and biological treatments are among the most promising technologies for the treatment of wastewater containing pharmaceutical pollutants. These treatments are green alternatives for the degradation of hazardous organic compounds into nontoxic by-products. Here, we review some of the physicochemical and biological treatment methods used for the removal of the most extensively used antibiotics and hormones. Enzymatic oxidation, photocatalysis and electrochemical oxidation are described in terms of the aforementioned pharmaceutically active compounds (PhACs). The use of membrane technologies to separate different groups of antibiotics and hormones prior to biologic or physicochemical treatment methods is also addressed.
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Affiliation(s)
- Erika Méndez
- a Faculty of Chemical Sciences, Universidad Autónoma de Puebla , Puebla , Mexico
| | | | | | | | - Eduardo Torres
- c Institute of Sciences, Universidad Autónoma de Puebla , Puebla , Mexico
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Abstract
Solar UVB is carcinogenic. Nucleotide excision repair (NER) counteracts the carcinogenicity of UVB by excising potentially mutagenic UVB-induced DNA lesions. Despite this capacity for DNA repair, non-melanoma skin cancers and apparently normal sun-exposed skin contain huge numbers of mutations that are mostly attributable to unrepaired UVB-induced DNA lesions. UVA is about 20-times more abundant than UVB in incident sunlight. It does cause some DNA damage but this does not fully account for its biological impact. The effects of solar UVA are mediated by its interactions with cellular photosensitizers that generate reactive oxygen species (ROS) and induce oxidative stress. The proteome is a significant target for damage by UVA-induced ROS. In cultured human cells, UVA-induced oxidation of DNA repair proteins inhibits DNA repair. This article addresses the possible role of oxidative stress and protein oxidation in determining DNA repair efficiency - with particular reference to NER and skin cancer risk.
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Affiliation(s)
- Peter Karran
- Francis Crick Research Institute, Clare Hall Laboratory, South Mimms, Herts. EN6 3LD, UK.
| | - Reto Brem
- Francis Crick Research Institute, Clare Hall Laboratory, South Mimms, Herts. EN6 3LD, UK
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Soldevila S, Cuquerella MC, Bosca F. Understanding of the Photoallergic Properties of Fluoroquinolones: Photoreactivity of Lomefloxacin with Amino Acids and Albumin. Chem Res Toxicol 2014; 27:514-23. [DOI: 10.1021/tx400377s] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Sonia Soldevila
- Instituto
Universitario Mixto
de Tecnologia Quimica (UPV-CSIC), Universitat Politecnica de Valencia, Avenida de los Naranjos s/n, 46022 Valencia, Spain
| | - M. Consuelo Cuquerella
- Instituto
Universitario Mixto
de Tecnologia Quimica (UPV-CSIC), Universitat Politecnica de Valencia, Avenida de los Naranjos s/n, 46022 Valencia, Spain
| | - Francisco Bosca
- Instituto
Universitario Mixto
de Tecnologia Quimica (UPV-CSIC), Universitat Politecnica de Valencia, Avenida de los Naranjos s/n, 46022 Valencia, Spain
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Soldevila S, Consuelo Cuquerella M, Lhiaubet-Vallet V, Edge R, Bosca F. Seeking the mechanism responsible for fluoroquinolone photomutagenicity: a pulse radiolysis, steady-state, and laser flash photolysis study. Free Radic Biol Med 2014; 67:417-25. [PMID: 24316197 DOI: 10.1016/j.freeradbiomed.2013.11.027] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2013] [Revised: 11/25/2013] [Accepted: 11/25/2013] [Indexed: 11/28/2022]
Abstract
The mechanism responsible for the remarkable photomutagenicity of fluoroquinolone (FQ) antibiotics remains unknown. For this reason, it was considered worthwhile to study in detail the interactions between DNA and a dihalogenated FQ such as lomefloxacin (LFX; one of the most photomutagenic FQs) and its N-acetyl derivative ALFX. Studies of photosensitized DNA damage by (A)LFX, such as formation of DNA single-strand breaks (SSBs), together with pulse radiolysis, laser flash photolysis, and absorption and fluorescence measurements, have shown the important effects of the cationic character of the piperazinyl ring on the affinity of this type of drug for DNA. Hence, the formation of SSBs was detected for LFX, whereas ALFX and ciprofloxacin (a monofluorated FQ) needed a considerably larger dose of light to produce some damage. In this context, it was determined that the association constant (Ka) for the binding of LFX to DNA is ca. 2×10(3)M(-1), whereas in the case of ALFX it is only ca. 0.5×10(3)M(-1). This important difference is attributed to an association between the cationic peripheral ring of LFX and the phosphate moieties of DNA and justifies the DNA SSB results. The analysis of the transient species detected and the photomixtures has allowed us to establish the intermolecular processes involved in the photolysis of FQ in the presence of DNA and 2'-deoxyguanosine (dGuo). Interestingly, although a covalent binding of the dihalogenated FQ to dGuo occurs, the photodegradation of FQ…DNA complexes did not reveal any significant covalent attachment. Another remarkable outcome of this study was that (A)LFX radical anions, intermediates required for the onset of DNA damage, were detected by pulse radiolysis but not by laser flash photolysis.
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Affiliation(s)
- Sonia Soldevila
- Instituto Universitario Mixto de Tecnologia Quimica (UPV-CSIC), Universitat Politecnica de Valencia, 46022 Valencia, Spain
| | - M Consuelo Cuquerella
- Instituto Universitario Mixto de Tecnologia Quimica (UPV-CSIC), Universitat Politecnica de Valencia, 46022 Valencia, Spain
| | - Virginie Lhiaubet-Vallet
- Instituto Universitario Mixto de Tecnologia Quimica (UPV-CSIC), Universitat Politecnica de Valencia, 46022 Valencia, Spain
| | - Ruth Edge
- Dalton Cumbrian Facility, The University of Manchester, Cumbria CA24 3HA, UK
| | - Francisco Bosca
- Instituto Universitario Mixto de Tecnologia Quimica (UPV-CSIC), Universitat Politecnica de Valencia, 46022 Valencia, Spain.
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8
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Soldevila S, Bosca F. Photoreactivity of Fluoroquinolones: Nature of Aryl Cations Generated in Water. Org Lett 2012; 14:3940-3. [DOI: 10.1021/ol301694p] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Sonia Soldevila
- Instituto de Tecnología Química, Consejo Superior de Investigaciones Científicas/Universidad Politécnica de Valencia (CSIC/UPV), Avd. Los Naranjos s/n, 46022-Valencia, Spain
| | - Francisco Bosca
- Instituto de Tecnología Química, Consejo Superior de Investigaciones Científicas/Universidad Politécnica de Valencia (CSIC/UPV), Avd. Los Naranjos s/n, 46022-Valencia, Spain
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de Guidi G, Bracchitta G, Catalfo A. Photosensitization Reactions of Fluoroquinolones and Their Biological Consequences. Photochem Photobiol 2011; 87:1214-29. [DOI: 10.1111/j.1751-1097.2011.00978.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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10
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Fasani E, Monti S, Manet I, Tilocca F, Pretali L, Mella M, Albini A. Inter- and Intramolecular Photochemical Reactions of Fleroxacin. Org Lett 2009; 11:1875-8. [DOI: 10.1021/ol900189v] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Elisa Fasani
- Department of Organic Chemistry, University of Pavia, v. Taramelli 10, 27100 Pavia, Italy, and Istituto per la Sintesi Organica e la Fotoreattività ISOF-CNR, v. Gobetti 101, 40127 Bologna, Italy
| | - Sandra Monti
- Department of Organic Chemistry, University of Pavia, v. Taramelli 10, 27100 Pavia, Italy, and Istituto per la Sintesi Organica e la Fotoreattività ISOF-CNR, v. Gobetti 101, 40127 Bologna, Italy
| | - Ilse Manet
- Department of Organic Chemistry, University of Pavia, v. Taramelli 10, 27100 Pavia, Italy, and Istituto per la Sintesi Organica e la Fotoreattività ISOF-CNR, v. Gobetti 101, 40127 Bologna, Italy
| | - Fedele Tilocca
- Department of Organic Chemistry, University of Pavia, v. Taramelli 10, 27100 Pavia, Italy, and Istituto per la Sintesi Organica e la Fotoreattività ISOF-CNR, v. Gobetti 101, 40127 Bologna, Italy
| | - Luca Pretali
- Department of Organic Chemistry, University of Pavia, v. Taramelli 10, 27100 Pavia, Italy, and Istituto per la Sintesi Organica e la Fotoreattività ISOF-CNR, v. Gobetti 101, 40127 Bologna, Italy
| | - Mariella Mella
- Department of Organic Chemistry, University of Pavia, v. Taramelli 10, 27100 Pavia, Italy, and Istituto per la Sintesi Organica e la Fotoreattività ISOF-CNR, v. Gobetti 101, 40127 Bologna, Italy
| | - Angelo Albini
- Department of Organic Chemistry, University of Pavia, v. Taramelli 10, 27100 Pavia, Italy, and Istituto per la Sintesi Organica e la Fotoreattività ISOF-CNR, v. Gobetti 101, 40127 Bologna, Italy
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11
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Lhiaubet-Vallet V, Bosca F, Miranda MA. Photosensitized DNA damage: the case of fluoroquinolones. Photochem Photobiol 2009; 85:861-8. [PMID: 19320842 DOI: 10.1111/j.1751-1097.2009.00548.x] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
This review focuses on DNA damage photosensitized by the fluoroquinolone (FQ) antibacterial drugs. The in vivo evidence for photocarcinogenesis mediated by FQs is presented in the introduction. The different methods employed for detection of DNA-photodamage mediated by FQs are then summarized, including gel electrophoresis (with whole cells, with isolated DNA and with oligonucleotides) and chromatographic analysis (especially HPLC with electrochemical and MS/MS detection). The chemical mechanisms involved in the formation of the reported lesions are discussed on the basis of product studies and transient spectroscopic evidence. In general, the literature coverage is limited to the last decade, although some earlier citations are also included.
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12
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Attia SM. Abatement by naringin of lomefloxacin-induced genomic instability in mice. Mutagenesis 2008; 23:515-21. [DOI: 10.1093/mutage/gen045] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
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13
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Budai M, Gróf P, Zimmer A, Pápai K, Klebovich I, Ludányi K. UV light induced photodegradation of liposome encapsulated fluoroquinolones: An MS study. J Photochem Photobiol A Chem 2008. [DOI: 10.1016/j.jphotochem.2008.04.004] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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14
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Abstract
The ocular toxicity of fluoroquinolones and the risks of their use in the treatment of ocular infection were reviewed. Systematic identification, selection, review and synthesis of published English-language studies relating to fluoroquinolone use and safety in animals and humans was conducted. Although not free of complications, fluoroquinolones are generally safe when used to treat ocular infection. Ocular toxicity appears to be dose-dependent and results from class-effects and specific fluoroquinolone structures. Phototoxicity and neurotoxicity have been reported, and toxic effects on ocular collagen may be associated with Achilles tendinopathy. Corneal precipitation may provide an advantageous drug depot but delay healing and result in corneal perforation in approximately 10% of cases. Although human toxicity studies are limited, the current recommended dose for intracameral injection of ciprofloxacin is less than 25 microg. Intravitreal injections of ciprofloxacin 100 microg, ofloxacin 50 microg/mL, trovafloxacin 25 microg or less, moxifloxacin 160 microg/0.1 mL or less and pefloxacin 200 microg/0.1 mL are considered safe.
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Affiliation(s)
- Andrew M Thompson
- Section of Ophthalmology, University of Otago Dunedin School of Medicine, New Zealand.
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Cuquerella MC, Miranda MA, Bosca F. Generation of Detectable Singlet Aryl Cations by Photodehalogenation of Fluoroquinolones. J Phys Chem B 2006; 110:6441-3. [PMID: 16570937 DOI: 10.1021/jp060634d] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Nanosecond laser flash photolysis (lambdaexc = 355 nm) of neutral aqueous solutions of lomefloxacin (LFX, a 8-fluorinated 7-amino-4-quinolone-3-carboxylic acid derivative) produces a detectable transient species, which shows an absorption maximum at 490 nm and can be assigned to an aryl cation. This intermediate has a lifetime of ca. 200 ns in net water, reacts with Br- and Cl- with rate constants of 3.6 x 10(9) M(-1) s(-1) and 4.1 x 10(8) M(-1) s(-1), respectively, and shows a lack of reactivity toward molecular oxygen. From the photolysis of BAY y3118 (BAY, a 8-chlorinated analogue), an aryl cation is also generated, showing absorption maximum at 480 nm (lifetime of ca. 1 micros in net water) and a reaction rate constant of 9 x 10(9) M(-1) s(-1) with Br(-). The existence of these highly reactive species arising from direct photolysis of LFX and BAY can justify the photogenotoxic properties associated with these antibacterial drugs likely due to direct reaction of their cations with DNA.
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Affiliation(s)
- M Consuelo Cuquerella
- Instituto de Technología Química UPV_CSIC, Universidad Politécnica de Valencia, Avda de los Naranjos s/n, 46022 Valencia, Spain
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Cuquerella MC, Miranda MA, Bosca F. Role of Excited State Intramolecular Charge Transfer in the Photophysical Properties of Norfloxacin and Its Derivatives. J Phys Chem A 2006; 110:2607-12. [PMID: 16494369 DOI: 10.1021/jp0559837] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The photophysical properties of 1-ethyl-6-fluoro-7-(1-piperazinyl)-1,4-dihydro-4-oxoquinoline-3-carboxylic acid (norfloxacin, NFX) and some of its derivatives have been studied to evaluate the role of the free carboxylic acid and the nonprotonated piperazinyl group in the behavior of the 1,4-dihydro-4-oxoquinoline ring. Steady state and time-resolved fluorescence measurements at different pHs provide clear evidence in favor of singlet excited-state deactivation of NFX and its N(4')-methyl derivative pefloxacin (PFX) via intramolecular electron transfer from the N(4') atom of the piperazinyl ring to the fluoroquinolone (FQ) main system. This is a very efficient, energy-wasting pathway, which becomes dramatically enhanced in basic media. Acetylation at N(4') (as in ANFX) decreases the availability of the lone pair, making observable its fluorescence and the transient absorption spectrum of its triplet excited state even at high pH. It also reveals that the geometry of FQs changes from an almost sp3 hybridization of the N(1') of the piperazinyl substituent in the ground state to nearly sp2 in the singlet excited state (rehybridization accompanied by intramolecular charge transfer, RICT); accordingly, the singlet energy of ANFX is significantly lower than that of NFX and PFX. The fluorescence measurements using acetonitrile as a polar nonprotic organic solvent further support deactivation of the singlet excited state of nonacetylated NFX derivatives via intramolecular electron transfer from the N(4') atom.
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Affiliation(s)
- M Consuelo Cuquerella
- Instituto de Tecnología Química UPV-CSIC/Departamento de Química, Universidad Politécnica de Valencia, Avenida de los Naranjos s/n, 46022-Valencia, Spain
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Mitscher LA. Bacterial topoisomerase inhibitors: quinolone and pyridone antibacterial agents. Chem Rev 2005; 105:559-92. [PMID: 15700957 DOI: 10.1021/cr030101q] [Citation(s) in RCA: 591] [Impact Index Per Article: 31.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lester A Mitscher
- Department of Medicinal Chemistry and Molecular Biosciences and The Chemical Methodologies and Library Development Center of Excellence, The University of Kansas, Lawrence, Kansas 66045-7582, USA.
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Abstract
Moxifloxacin (Avelox) is a fluoroquinolone antibacterial with a methoxy group in the C-8 position and a bulky C-7 side chain. Moxifloxacin is approved for use in the treatment of acute exacerbations of chronic bronchitis (AECB), community-acquired pneumonia (CAP), acute bacterial sinusitis and uncomplicated skin and skin structure infections (approved indications may differ between countries). Moxifloxacin has a broad spectrum of antibacterial activity, including activity against penicillin-resistant Streptococcus pneumoniae. It achieves good tissue penetration and has a convenient once-daily administration schedule, as well as being available in both intravenous and oral formulations in some markets. Moxifloxacin has good efficacy in the treatment of patients with AECB, CAP, acute bacterial sinusitis and uncomplicated skin and skin structure infections, and is generally well tolerated. Thus, moxifloxacin is an important option in the treatment of bacterial infections.
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Brendler-Schwaab S, Czich A, Epe B, Gocke E, Kaina B, Müller L, Pollet D, Utesch D. Photochemical genotoxicity: principles and test methods. Report of a GUM task force. Mutat Res 2004; 566:65-91. [PMID: 14706512 DOI: 10.1016/s1383-5742(03)00052-8] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/27/2023]
Abstract
In recent years, assessing the photogenotoxic potential of a compound became an issue for certain drugs and cosmetical products. Therefore, existing methods performed according to international guidelines (e.g. OECD guidelines) were adapted to the use of concurrent UV-visible (UV-Vis) light irradiation for the assessment of photomutagenicity/photogenotoxicity. In this review, photobiological bases of the processes occurring in the cell after irradiation with UV- and/or visible (vis)-light as well as a compilation of testing methods is presented. Methods comprise cell free investigations on naked DNA and in vitro methods, such as the photo-Ames test, the photo-HPRT/photo-mouse lymphoma assay (MLA), the photo-micronucleus test (MNT), the photo-chromosomal aberration test (CA) and the photo-Comet assay. A compilation of the currently available international literature of compounds tested on photogenotoxicity is given for each method. The state of the art of photogenotoxicity testing as well as the rational for testing are outlined in relation to the recommendations reached in expert working groups at different international meetings and to regulatory guidance papers. Finally, photogenotoxicity testing as predictor of photocarcinogenicity and in the light of risk assessment is discussed.
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Itoh S, Katoh M, Furuhama K. In vivo photochemical micronucleus induction due to certain quinolone antimicrobial agents in the skin of hairless mice. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2002; 520:133-9. [PMID: 12297153 DOI: 10.1016/s1383-5718(02)00198-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The skin micronucleus test combined with irradiation due to a sunlight simulator having a spectrum almost identical to solar irradiation was used as a novel in vivo testing method for detecting or comparing the photochemical chromosome damage of quinolone antibacterial agents (quinolones). Eight-week-old male SKH1 hairless mice were orally administered once lomefloxacin (LFLX), a strong in vitro photochemical clastogen, at 25 or 50 mg/kg, followed by light irradiation at 7.9-9.4J/cm2 of ultraviolet A (UVA). Animals were killed on Days 2, 3, 4, 5 or 8 (the dosing day was designated as Day 1), and the incidence of micronucleus in the epidermis was determined. As results, LFLX at either dose caused significant increases in the micronucleus frequency, which peaked on Day 4. These changes tended to return to the control level on Day 8. Then, the micronucleus induction potential of the quinolone derivatives levofloxacin (LVFX) and clinafloxacin (CLFX) at 10, 20 or 40 mg/kg was assessed on Day 4 under the same experimental conditions as for LFLX. Although LVFX was negative even at 40 mg/kg, CFLX dose-dependently induced significant increases in micronucleus frequency at all doses. The correlation of magnitude among the three quinolones in the skin micronucleus test with light irradiation was similar to that in our previous in vitro photochemical clastogenicity study. No significant increase in micronucleus frequency was observed in any of three quinolones employed without light irradiation. In conclusion, the experimental method presented here would be a useful tool for detecting in vivo photochemical chromosome damage and for research on photochemical carcinogenesis of chemicals.
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Affiliation(s)
- Satoru Itoh
- Drug Safety Research Laboratory, Daiichi Pharmaceutical Co. Ltd., 16-13, Kita-Kasai 1-Chome, Edogawa-ku, 134-8630, Tokyo, Japan.
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Kersten B, Kasper P, Brendler-Schwaab SY, Müller L. Use of the photo-micronucleus assay in Chinese hamster V79 cells to study photochemical genotoxicity. Mutat Res 2002; 519:49-66. [PMID: 12160891 DOI: 10.1016/s1383-5718(02)00113-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Photochemical genotoxicity can be detected using appropriately adapted versions of most of the standard in vitro genotoxicity assays. The most sensitive approach to detect potentially photogenotoxic agents seems to be the investigation of DNA damage (DNA strand breakage, chromosomal aberrations, micronuclei) in mammalian cells in vitro. In a previous paper, we proposed the use of the micronucleus assay in Chinese hamster V79 cells for this purpose. This assay was found suitable to detect various photogenotoxic compounds with different photoactivation mechanisms. In order to extend the experimental experiences with this assay, we present here further data from a screening mode testing of 16 different potential photosensitizers. The photoclastogenic and photocytotoxic potential of the compounds was investigated concomitantly. So far, all substances detected in the photo-micronucleus assay as photogenotoxins also exhibited photocytotoxic properties but not vice versa. Among the compounds tested in the present study, tiaprofenic acid, 5-MOP, angelicin, nitrazepam, bendroflumethiazide, and dacarbazine were photogenotoxic and photocytotoxic. Further, 6-mercaptopurine, a metabolite of azathioprine was positive for both endpoints, whereas azathioprine was found negative. Azathioprine seems to be an example of a compound which lacks photo(geno)toxic properties in vitro but may be converted to a photosensitizer by enzymatical metabolization. With the results obtained in this study, the data base for the photo-micronucleus assay was extended to 35 compounds, which were tested using the same protocol and the same irradiation conditions. The photogenotoxicity results of all these compounds are summarized and discussed in correlation to their different photoactivation mechanisms, photocytotoxicity and photocarcinogenicity.
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Affiliation(s)
- B Kersten
- Federal Institute for Drugs and Medical Devices, Friedrich-Ebert-Allee 38, D-53113 Bonn, Germany.
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Itoh S, Nakayama S, Shimada H. In vitro photochemical clastogenicity of quinolone antibacterial agents studied by a chromosomal aberration test with light irradiation. Mutat Res 2002; 517:113-21. [PMID: 12034313 DOI: 10.1016/s1383-5718(02)00058-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The photochemical clastogenic potential of 12 quinolone antibacterial agents with or without light irradiation was assessed by an in vitro chromosomal aberration test using cultured CHL cells. Exposure to all test compounds, except for DK-507k, increased the incidence of cells with structural aberrations excluding gap (TA) following light irradiation. Test compounds used in the present study under light irradiation were divided into three groups based on their ED(50) values, doses inducing chromosomal aberrations in 50% of cells. The first group with ED(50) values below 30 microg/ml includes sparfloxacin (SPFX), clinafloxacin (CLFX), gemifloxacin (GMFX), lomefloxacin (LFLX), sitafloxacin (STFX), grepafloxacin (GPFX) and fleroxacin (FLRX); the second group with ED(50) values of 100 microg/ml, enoxacin (ENX) and levofloxacin (LVFX); the third group with little or no potency, moxifloxacin (MFLX), trovafloxacin (TVFX) and DK-507k. The photochemical clastogenicity of these compounds correlates well with their reported in vivo phototoxic potentials. In the chemical structure and clastogenicity relationships, substitution of a methoxy group at the C-8 position in the quinolone nucleus was confirmed to reduce not only photochemical clastogenicity, but also the clastogenic potential of quinolone antibacterial agents.
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Affiliation(s)
- Satoru Itoh
- Drug Safety Research Laboratory, Daiichi Pharmaceutical Co. Ltd., 16-13 Kita-Kasai 1-Chome, Edogawa-ku, Tokyo 134-8630, Japan.
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Iatropoulos MJ, Jeffrey AM, Enzmann HG, von Keutz E, Schlueter G, Williams GM. Assessment of chronic toxicity and carcinogenicity in an accelerated cancer bioassay in rats of moxifloxacin, a quinolone antibiotic. EXPERIMENTAL AND TOXICOLOGIC PATHOLOGY : OFFICIAL JOURNAL OF THE GESELLSCHAFT FUR TOXIKOLOGISCHE PATHOLOGIE 2001; 53:345-57. [PMID: 11817103 DOI: 10.1078/0940-2993-00200] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The chronic toxicity and carcinogenicity of Moxifloxacin (MOX), a bacterial gyrase-inhibiting fluoroquinolone antibiotic, were studied in male and female Wistar rats in an accelerated cancer bioassay (ACB). The ACB is a mechanistic initiation/promotion chronic toxicity and carcinogenicity study designed to assess potential carcinogenic activity of a test substance in critical organs in which human carcinogens are active. The organs studied were liver, lungs, urinary bladder, mammary gland, bone marrow, thymus, spleen and stomach. MOX was given daily by intragastric instillation at 500 mg/kg bw/day for the first 13 weeks to produce potential initiation, followed by promoters (PROs) for 24 weeks, or for the last 24 weeks after 13 weeks of exposure to initiators (INs). The INs, administered during the first 13 weeks, were diethylnitrosamine for the liver, N-n-butyl-N-(4-hydroxybutyl)nitrosamine for the urinary bladder, ethylnitrosourea for the hematolymphoreticular system, N-nitrosodimethylamine for lungs, methylnitrosourea for the stomach and 7,12-dimethylbenz(a)-anthracene for the mammary gland. The PROs, administered during the last 24 weeks after MOX, were phenobarbital for the liver, nitrilotriacetic acid for the urinary bladder, azathioprine for the bone marrow, butylated hydroxytoluene for the lung, butylated hydroxyanisole for the forestomach, and diethylstilbestrol for the mammary gland. The INs produced preneoplastic and neoplastic lesions which were not enhanced by MOX, and MOX plus PROs elicited no neoplastic effects, documenting that MOX did not produce either initiation or promotion of neoplasia in any of the target sites, or in any of the other twenty tissues examined.
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Affiliation(s)
- M J Iatropoulos
- Department of Pathology, New York Medical College, Valhalla 10595, USA
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Marrot L, Belaidi JP, Chaubo C, Meunier JR, Perez P, Agapakis-Causse C. Fluoroquinolones as chemical tools to define a strategy for photogenotoxicity in vitro assessment. Toxicol In Vitro 2001; 15:131-42. [PMID: 11287172 DOI: 10.1016/s0887-2333(01)00004-2] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Today's lifestyle is often associated with frequent exposure to sunlight, but some xenobiotics used in drugs, cosmetics or food chemicals can produce adverse biological effects when irradiated. In particular, they can increase the risk of photogenotoxicity already due to UV radiation itself. There is thus a need to design appropriate approaches in order to obtain relevant data at the molecular and cellular level in this field. For ethical and practical reasons, in vitro models can be very convenient at least for first evaluation tests. Here, we propose a strategy based on complementary experiments to study the photogenotoxic potential of a compound. The fluoroquinolones BAYy3118 and lomefloxacin were used as standards to demonstrate the performance of each test: photoinduced interaction with supercoiled circular DNA, photomutagenicity in the yeast Saccharomyces cerevisae, induction of DNA photodamage in cultured human skin cells as revealed by comet assay, and finally induction of specific phototoxic stress responses such as p53 activation or melanogenesis stimulation. Such a strategy should help to ensure the safety of products likely to undergo environmental sunlight exposure.
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Affiliation(s)
- L Marrot
- L'OREAL Advanced Research, Life Sciences Research, Investigative Toxicology Department, Aulnay-sous-bois, France.
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