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Kawasaki T. Distribution of Fluoroquinolone-Resistant Escherichia coli in Parent Flocks Treated with Fluoroquinolones on Chick Stage and their Broiler Offspring. J Poult Sci 2024; 61:2024013. [PMID: 38681191 PMCID: PMC11043624 DOI: 10.2141/jpsa.2024013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Accepted: 04/03/2024] [Indexed: 05/01/2024] Open
Abstract
This study investigated the distribution of ofloxacin-resistant Escherichia coli (OFXR-EC) in broiler parent flocks (PS) treated with ofloxacin for 5 days from the time the chicks arrived at the poultry house, and their broiler offspring. OFXR-EC was detected in 22.95% of neonatal parent stock chicks (PSN) arriving at the poultry house. The detection rate of OFXR-EC in PS rearing was 72.49%, which was significantly higher than that detected in PSN. In addition, the detection rate of OFXR-EC was significantly lower in neonatal chicks of their offspring broilers (CSN) at 7.06% than that of PS, but was 24.62% in offspring broiler flocks (CS) at approximately 6 weeks of age. The OFXR-EC detection rate was significantly higher in CS than that in CSN, even though no therapeutic antimicrobials, including ofloxacin, were used from CSN to CS. In addition, the proportions of OFXR-ECs in E. coli isolated from samples in which OFXR-ECs were detected were 63.85% for PSN, 10.52% for PS, 62.00% for CSN, and 8.25% for CS. There was little difference in the composition ratio of OFXR-EC between PSN and CSN, or between PS and CS.
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Affiliation(s)
- Takeshi Kawasaki
- Research Office Concerning the Health of Humans and Birds, Abashiri,
099-3119, Japan
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2
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Huong Phung TL, Anh Nguyen T, Dinh Ngo X, Phan Vu N, Le LT, Nguyen AD, Le AT. Cu 2MoS 4 Nanocatalyst-Based Electrochemical Sensor for Ofloxacin Electro-Oxidation: Delineating the Combined Roles of Crystallinity and Morphology on the Analytical Performance. Chem Asian J 2024:e202400166. [PMID: 38664856 DOI: 10.1002/asia.202400166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 04/21/2024] [Indexed: 05/18/2024]
Abstract
In this study, we demonstrate the influence of crystallinity and morphology on the analytical performance of various Cu2MoS4 (CMS) nanocatalysts-based electrochemical sensors for the high-efficiency detection of Ofloxacin (OFX) antibiotic. The electrochemical kinetics parameters including peak current response (ΔIp), peak-to-peak separation (ΔEp), electrochemically active surface area (ECSA), electron-transfer resistance (Rct), were obtained through the electrochemical analyses, which indicate the single-crystalline nature of CMS nanomaterials (NMs) is beneficial for enhanced electron-transfer kinetics. The morphological features and the electrochemical results for OFX detection substantiate that by tuning the tube-like to plate-like structures of the CMS NMs, it might noticeably enhance multiple adsorption sites and more intrinsic active catalytic sites due to the diffusion of analytes into the interstitial spaces between CMS nanoplates. As results, highly single-crystalline and plate-shaped morphology structures of CMS NMs would significantly enhance the electrocatalytic OFX oxidation in terms of onset potential (Eonset), Tafel slope, catalytic rate constant (kcat), and adsorption capacity (Γ). The CMS NMs-based electrochemical sensing platform showed excellent analytical performance toward the OFX detection with two ultra-wide linear detection concentration ranges from 0.25-100 and 100-1000 μM, a low detection limit of 0.058 μM, and an excellent electrochemical sensitivity (0.743 μA μM-1 cm-2).
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Affiliation(s)
- Thi Lan Huong Phung
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, 122300, Hanoi, Vietnam
- Phenikaa University Nano Institute (PHENA), Phenikaa University, 152351, Yen Nghia, Ha Dong, Hanoi, Vietnam
| | - Tuan Anh Nguyen
- Phenikaa University Nano Institute (PHENA), Phenikaa University, 152351, Yen Nghia, Ha Dong, Hanoi, Vietnam
| | - Xuan Dinh Ngo
- Phenikaa University Nano Institute (PHENA), Phenikaa University, 152351, Yen Nghia, Ha Dong, Hanoi, Vietnam
| | - Ngoc Phan Vu
- Phenikaa University Nano Institute (PHENA), Phenikaa University, 152351, Yen Nghia, Ha Dong, Hanoi, Vietnam
- Faculty of Biotechnology, Chemistry and Environmental Engineering, Phenikaa University, 152351, Yen Nghia, Ha Dong, Hanoi, Vietnam
| | - Ly T Le
- University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, 122300, Hanoi, Vietnam
| | - Anh D Nguyen
- University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, 122300, Hanoi, Vietnam
| | - Anh-Tuan Le
- Phenikaa University Nano Institute (PHENA), Phenikaa University, 152351, Yen Nghia, Ha Dong, Hanoi, Vietnam
- Faculty of Materials Science and Engineering, Phenikaa University, 152351, Yen Nghia, Ha Dong, Hanoi, Vietnam
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3
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Chen L, Li X. Simultaneous identification and enantioseparation of ofloxacin and duloxetine without the single standard and computational calculation of their inclusion complexes. Chirality 2024; 36:e23661. [PMID: 38454837 DOI: 10.1002/chir.23661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Revised: 02/20/2024] [Accepted: 02/21/2024] [Indexed: 03/09/2024]
Abstract
Given the markedly different pharmacological activities between enantiomeric isomers, it is crucial to encourage the stereoselective determination of chiral drugs in the biological and pharmaceutical fields, and the combination of drugs makes this analysis more complicated and challenging. Herein, a capillary electrophoresis (CE) method for the enantioseparation of ofloxacin and duloxetine was established, enabling the simultaneous identification of four isomers in nonracemic mixtures with enantiomeric excess (ee%) values exceeding 5%. This was achieved through the integration of theoretical simulation and electron circular dichroism (ECD), all without reliance on individual standards. Molecular modeling explained and verified the migration time differences of these isomers in electrophoretic separation. Moreover, the correlation coefficients (R2 ) between the enantiomeric peak area differentials and ee% were both above 0.99. Recovery rates were quantified using bovine serum as the matrix, with results ranging from 93.32% to 101.03% (RSD = 0.030) and 92.69% to 100.52% (RSD = 0.028) for these two chiral drugs at an ee value of 23.1%, respectively.
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Affiliation(s)
- Lixia Chen
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, China
- Binzhou Institute of Technology, Weiqiao-UCAS Science and Technology Park, Binzhou, China
| | - Xiangjun Li
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, China
- Binzhou Institute of Technology, Weiqiao-UCAS Science and Technology Park, Binzhou, China
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4
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Ikeda I, Fukushima S. A Case of Anaphylactic Shock Due to Lev ofloxacin Eye Drops Confirmed by a Prick Test. Cureus 2024; 16:e53804. [PMID: 38465137 PMCID: PMC10924633 DOI: 10.7759/cureus.53804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/07/2024] [Indexed: 03/12/2024] Open
Abstract
Topical levofloxacin has been used safely, but it can induce life-threatening hypersensitivities. We report a case of anaphylactic shock caused by levofloxacin eye drops during the treatment of a corneal injury, confirmed by a prick test. Reported cases of hypersensitivity to levofloxacin and its racemate ofloxacin eye drops are also summarized.
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Affiliation(s)
- Isamu Ikeda
- Department of Dermatology, Omuta Tenryo Hospital, Omuta, JPN
| | - Satoshi Fukushima
- Department of Dermatology and Plastic Surgery, Faculty of Life Sciences, Kumamoto University, Kumamoto, JPN
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Telfah A, Al-Akhras MA, AlShheamat H, Mousa MS, Jum'h I, Albawab AQ, Tolstik E, Dierks J, Hergenröder R. Dissociation Kinetics and Antimicrobial Activity of Ofloxacin Antibiotic in Artificial Tears Via 1H-NMR, Raman, and UV-Vis Spectroscopic Analysis. J Ocul Pharmacol Ther 2024; 40:78-88. [PMID: 38252789 DOI: 10.1089/jop.2023.0019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2024] Open
Abstract
Introduction: The hydrogen-bonded networks play a significant role in influencing several physicochemical properties of ofloxacin in artificial tears (ATs), including density, pH, viscosity, and self-diffusion coefficients. The activities of the ofloxacin antibiotic with Ats mixtures are not solely determined by their concentration but are also influenced by the strength of the hydrogen bonding network which highlight the importance of considering factors such as excessive tear production and dry eye conditions when formulating appropriate dosages of ofloxacin antibiotics for eye drops. Objectives: Investigating the physicochemical properties of ofloxacin-ATs mixtures, which serve as a model for understanding the impact of hydrogen bonding on the antimicrobial activity of ofloxacin antibiotic eye drops. Determine the antimicrobial activities of the ofloxacin-Ats mixture with different concentration of ofloxacin. Methods: The ofloxacin-ATs mixtures were analyzed using 1H-NMR, Raman, and UV-Vis spectroscopies, with variation of ofloxacin concentration to study its dissociation kinetics in ATs, mimicking its behavior in human eye tears. The investigation includes comprehensive analysis of 1H-NMR spectral data, self-diffusion coefficients, Raman spectroscopy, UV-Vis spectroscopy, liquid viscosity, and acidity, providing a comprehensive assessment of the physicochemical properties. Results: Analysis of NMR chemical shifts, linewidths, and self-diffusion coefficient curves reveals distinct patterns, with peaks or minima observed around 0.6 ofloxacin mole fraction dissociated in ATs, indicating a strong correlation with the hydrogen bonding network. Additionally, the pH data exhibits a similar trend to viscosity, suggesting an influence of the hydrogen bonding network on protonic ion concentrations. Antibacterial activity of the ofloxacin-ATs mixtures is evaluated through growth rate analysis against Salmonella typhimurium, considering varying concentrations with mole fractions of 0.1, 0.4, 0.6, 0.8, and 0.9. Conclusions: The antibiotic-ATs mixture with a mole fraction of 0.6 ofloxacin exhibited lower activity compared to mixtures with mole fractions of 0.1 and 0.4, despite its lower concentration. The activities of the mixtures are not solely dependent on concentration but are also influenced by the strength of the hydrogen bonding network. These findings emphasize the importance of considering tear over-secretion and dry eye problems when designing appropriate doses of ofloxacin antibiotics for eye drop formulations.
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Affiliation(s)
- Ahmad Telfah
- Nanotechnology Center, The University of Jordan, Amman, Jordan
- Department of Physics, University of Nebraska at Omaha, Omaha, Nebraska, USA
| | - M-Ali Al-Akhras
- Department of Physical Sciences, Jordan University of Science and Technology, Irbid, Jordan
| | - Haya AlShheamat
- Department of Physical Sciences, Jordan University of Science and Technology, Irbid, Jordan
| | - Marwan S Mousa
- Surface Physics and Materials Technology Lab, Department of Physics, Mutah University, Al-Karak, Jordan
| | - Inshad Jum'h
- School of Basic Science and Humanities, German Jordanian University (GJU), Amman, Jordan
| | | | - Elen Tolstik
- Leibniz-Institut für Analytische Wissenschaften-ISAS-e.V., Dortmund, Germany
| | - Johann Dierks
- Leibniz-Institut für Analytische Wissenschaften-ISAS-e.V., Dortmund, Germany
| | - Roland Hergenröder
- Leibniz-Institut für Analytische Wissenschaften-ISAS-e.V., Dortmund, Germany
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Shaw B, Madden M, Crespo A, Madruga M, Carlan SJ. A Rare Case of Severe Stevens-Johnson Syndrome Triggered by Topical Ofloxacin. Am J Case Rep 2023; 24:e941992. [PMID: 37952083 PMCID: PMC10654684 DOI: 10.12659/ajcr.941992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 10/04/2023] [Accepted: 09/27/2023] [Indexed: 11/14/2023]
Abstract
BACKGROUND Stevens-Johnson syndrome (SJS) is a rare dermatologic disorder that is characterized by nonspecific flu-like prodrome with fever, malaise, myalgia, cough, rhinitis, and sore eyes, followed by a characteristic rash and mucocutaneous manifestations. It is triggered by medications in up to 80% of cases in adults. In each of these cases, the medication is oral or parenteral. Severe and progressive SJS can result in life-threatening complications. Adult-onset medication-induced SJS presents within 8 weeks of exposure to the offending substance, lasting 8 to 12 days. Recovery of denuded skin generally is complete within a month. There is no consensus on treatment, but supportive care with corticosteroids is often the initial intervention. CASE REPORT A 36-year-old woman with a flare of allergic rhinitis and tearing resistant to over-the-counter options was treated with topical ophthalmic ofloxacin. She began experiencing a diffuse mucocutaneous rash, with oral desquamation, tongue swelling, vaginal desquamation, and rash of the palms and soles within 24 h, which suggested the possibility of SJS. A skin biopsy was obtained, and pathology confirmed this suspicion. She was treated with parenteral antibiotics, corticosteroids, and supportive care, and after 10 days was discharged from the hospital. She had a complete recovery in 30 days. CONCLUSIONS The clinical course of SJS induced by the ophthalmic application of medication can be just as severe as the oral or parenteral routes. This is, to the best of our knowledge, the first documented case of SJS being triggered by topical ofloxacin.
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Affiliation(s)
- Brian Shaw
- Department of Internal Medicine, Orlando Regional Medical Center, Orlando, FL, USA
| | - Melinda Madden
- Department of Internal Medicine, Orlando Regional Medical Center, Orlando, FL, USA
| | - Antonio Crespo
- Division of Infectious Diseases, Orlando Regional Medical Center, Orlando, FL, USA
| | - Mario Madruga
- Department of Internal Medicine, Orlando Regional Medical Center, Orlando, FL, USA
| | - Stephen J. Carlan
- Division of Academic Affairs and Research, Orlando Regional Medical Center, Orlando, FL, USA
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El-Sayed A, Elmansi HM, Shalan S, Eid M. Validated spectrofluorimetric assay of two co-administered drug mixtures containing hydroxychloroquine with either moxifloxacin or ofloxacin as a drug regimen for hospital-acquired pneumonia in patients with COVID-19. LUMINESCENCE 2023; 38:1572-1582. [PMID: 37336514 DOI: 10.1002/bio.4539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 05/06/2023] [Accepted: 06/11/2023] [Indexed: 06/21/2023]
Abstract
Moxifloxacin and ofloxacin are two broad-spectrum quinolone antibiotics. They are among the most widely used antibiotics, at this time, applied to control the COVID-19 pandemic. Hydroxychloroquine is an FDA-approved drug for the treatment of COVID-19. This work describes a simple, green, selective, and sensitive spectrofluorimetric method for the assay of moxifloxacin and ofloxacin in the presence of hydroxychloroquine, two co-administered mixtures used in the treatment of hospital-acquired pneumonia in patients with COVID-19. Simultaneous assay of hydroxychloroquine and moxifloxacin was carried out in methanol using a direct spectrofluorimetric method (method I) at 375 and 550 nm, respectively, after excitation at 300 nm. The direct spectrofluorimetric assay was rectilinear over concentration ranges 50.0-400.0 and 300.0-2500.0 ng/ml for hydroxychloroquine and moxifloxacin, respectively, with limits of detection (LOD) of 6.4 and 33.64 ng/ml and limits of quantitation (LOQ) of 19.4 and 102.6 ng/ml, respectively, for the two drugs. The assay for hydroxychloroquine and ofloxacin was carried out by measuring the first derivative synchronous amplitude for hydroxychloroquine at the zero crossing point of ofloxacin and vice versa at Δλ = 140 nm (method II). Hydroxychloroquine was measured at 266 nm, while ofloxacin was measured at 340 nm over the concentration range 4-40 ng/ml for hydroxychloroquine and 200-2000 ng/ml for ofloxacin with LOD of 0.467 and 25.3 ng/ml and LOQ of 1.42 and 76.6 ng/ml, respectively, for the two drugs. The two methods were validated following International Conference on Harmonization guidelines and were applied to the analysis of the two drugs in plasma with good percentage recoveries (109.73-93.17%).
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Affiliation(s)
- Asmaa El-Sayed
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Heba Mohamed Elmansi
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Shereen Shalan
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Manal Eid
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
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8
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Kośka I, Kubalczyk P, Cichomski M, Kisielewska A. The Use of Extraction on C18-Silica-Modified Magnetic Nanoparticles for the Determination of Cipr ofloxacin and Ofloxacin in Meat Tissues. Molecules 2023; 28:6123. [PMID: 37630375 PMCID: PMC10459312 DOI: 10.3390/molecules28166123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 08/15/2023] [Accepted: 08/17/2023] [Indexed: 08/27/2023] Open
Abstract
A simple, fast, and low-cost method of extraction using magnetic nanoparticles was developed for sample preparation in the determination of ciprofloxacin and ofloxacin in meat tissues with the use of capillary electrophoresis. This study is the first utilization of silica-coated magnetic nanoparticles with attached C18 chains to extract fluoroquinolones from meat tissues. This method is therefore characterized by a very simple sample preparation procedure, but on the other hand, by satisfactory precision and accuracy. Magnetic nanoparticles with an appropriately modified surface were placed in an Eppendorf tube, then conditioned with methanol, next rinsed with water and, finally, a homogenized tissue sample was added. At the neutral pH of the sample solution, these compounds do not have a charge and are able to adsorb on the modified particles. After extraction, the nanoparticles were dried and, then, desorption of analytes was conducted with the use of a mixture of 0.1 mol/L HCl and acetonitrile (1:1). This approach made it possible to purify the sample matrix and to obtain satisfactory LOQ levels for the method using the CE technique with UV-Vis detection. In this method, the LOD and LOQ values for both analytes were 0.04 nmol/g tissue and 0.15 nmol/g tissue, respectively. The calibration curves were linear in the entire concentration range, and the accuracy and the recovery of the method were at the satisfactory levels. The square value of the linear correlation coefficients (R2) for Cpx and Ofx were 0.9995 and 0.9992, respectively. The precision value of the method was within the range of 3-11% and accuracy was in the range of 93-110%.
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Affiliation(s)
- Izabella Kośka
- Doctoral School of Exact and Natural Sciences, University of Lodz, Banacha 12/16, 90-237 Lodz, Poland
- Department of Environmental Chemistry, Faculty of Chemistry, University of Lodz, Pomorska 163, 90-236 Lodz, Poland
| | - Paweł Kubalczyk
- Department of Environmental Chemistry, Faculty of Chemistry, University of Lodz, Pomorska 163, 90-236 Lodz, Poland
| | - Michał Cichomski
- Department of Materials Technology and Chemistry, Faculty of Chemistry, University of Lodz, Pomorska 163, 90-236 Lodz, Poland; (M.C.); (A.K.)
| | - Aneta Kisielewska
- Department of Materials Technology and Chemistry, Faculty of Chemistry, University of Lodz, Pomorska 163, 90-236 Lodz, Poland; (M.C.); (A.K.)
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9
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Lafaurie M, Chevret S, Fontaine JP, Mongiat-Artus P, de Lastours V, Escaut L, Jaureguiberry S, Bernard L, Bruyere F, Gatey C, Abgrall S, Ferreyra M, Aumaitre H, Aparicio C, Garrait V, Meyssonnier V, Bourgarit-Durand A, Chabrol A, Piet E, Talarmin JP, Morrier M, Canoui E, Charlier C, Etienne M, Pacanowski J, Grall N, Desseaux K, Empana-Barat F, Madeleine I, Bercot B, Molina JM, Lefort A. Antimicrobial for 7 or 14 Days for Febrile Urinary Tract Infection in Men: A Multicenter Noninferiority Double-Blind, Placebo-Controlled, Randomized Clinical Trial. Clin Infect Dis 2023; 76:2154-2162. [PMID: 36785526 DOI: 10.1093/cid/ciad070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 01/20/2023] [Accepted: 02/06/2023] [Indexed: 02/15/2023] Open
Abstract
BACKGROUND The optimal duration of antimicrobial therapy for urinary tract infections (UTIs) in men remains controversial. METHODS To compare 7 days to 14 days of total antibiotic treatment for febrile UTIs in men, this multicenter randomized, double-blind. placebo-controlled noninferiority trial enrolled 282 men from 27 centers in France. Men were eligible if they had a febrile UTI and urine culture showing a single uropathogen. Participants were treated with ofloxacin or a third-generation cephalosporin at day 1, then randomized at day 3-4 to either continue ofloxacin for 14 days total treatment, or for 7 days followed by placebo until day 14. The primary endpoint was treatment success, defined as a negative urine culture and the absence of fever and of subsequent antibiotic treatment between the end of treatment and 6 weeks after day 1. Secondary endpoints included recurrent UTI within weeks 6 and 12 after day 1, rectal carriage of antimicrobial-resistant Enterobacterales, and drug-related events. RESULTS Two hundred forty participants were randomly assigned to receive antibiotic therapy for 7 days (115 participants) or 14 days (125 participants). In the intention-to-treat analysis, treatment success occurred in 64 participants (55.7%) in the 7-day group and in 97 participants (77.6%) in the 14-day group (risk difference, -21.9 [95% confidence interval, -33.3 to -10.1]), demonstrating inferiority. Adverse events during antibiotic therapy were reported in 4 participants in the 7-day arm and 7 in the 14-day arm. Rectal carriage of resistant Enterobacterales did not differ between both groups. CONCLUSIONS A treatment with ofloxacin for 7 days was inferior to 14 days for febrile UTI in men and should therefore not be recommended. CLINICAL TRIALS REGISTRATION NCT02424461; Eudra-CT: 2013-001647-32.
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Affiliation(s)
- Matthieu Lafaurie
- Department of Infectious Diseases, Hôpital Saint-Louis-Hôpital Lariboisière, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France
| | - Sylvie Chevret
- Department of Biostatistics, Hôpital Saint-Louis, AP-HP, Paris, France; Université Paris Diderot, Inserm S 717
| | | | | | - Victoire de Lastours
- Department of Internal Medicine, Hôpital Beaujon, AP-HP, Clichy, France
- Infection Antimicrobials Modelling Evolution (IAME) Research Group, UMR 1137, Université Paris Cité et Inserm, Paris, France
| | - Lélia Escaut
- Department of Infectious Diseases, Hôpital de Bicêtre, AP-HP, Le Kremlin-Bicêtre, France
| | - Stéphane Jaureguiberry
- Department of Infectious Diseases, Hôpital de Bicêtre, AP-HP, Le Kremlin-Bicêtre, France
| | - Louis Bernard
- Department of Infectious Diseases, Centre Hospitalier Régional Universitaire de Tours, Tours, France
| | - Franck Bruyere
- Department of Urology, Centre Hospitalier Régional Universitaire de Tours, Tours, France
| | - Caroline Gatey
- Department of Internal Medicine, Hôpital Antoine Béclère, AP-HP, Clamart, France
| | - Sophie Abgrall
- Université Paris-Saclay, Inserm U1018, Le Kremlin-Bićtre, France
| | - Milagros Ferreyra
- Department of Infectious Diseases, Centre Hospitalier de Perpignan, Perpignan, France
| | - Hugues Aumaitre
- Department of Infectious Diseases, Centre Hospitalier de Perpignan, Perpignan, France
| | - Caroline Aparicio
- Department of Internal Medicine, Hôpital Lariboisière, AP-HP, Paris, France
| | - Valérie Garrait
- Department of Internal Medicine, Centre Hospitalier Intercommunal de Créteil, Créteil, France
| | - Vanina Meyssonnier
- Department of Internal Medicine and Infectious Diseases, Groupe Hospitalier Diaconesses Croix Saint-Simon, Paris, France
| | | | - Amélie Chabrol
- Department of Infectious Diseases, Hôpital Sud Francilien, Corbeil-Essonnes, France
| | - Emilie Piet
- Department of Infectious Diseases, Centre Hospitalier Annecy Genevois, Annecy, France
| | - Jean-Philippe Talarmin
- Department of Infectious Diseases, Centre Hospitalier Intercommunal de Cornouaille, Quimper, France
| | - Marine Morrier
- Department of Infectious Diseases, Centre Hospitalier Départemental de la Roche sur Yon, La Roche sur Yon, France
| | - Etienne Canoui
- Mobile Infectious Diseases Team, Hôpital Cochin, AP-HP, France
| | - Caroline Charlier
- Mobile Infectious Diseases Team, Hôpital Cochin, AP-HP, France
- Université Paris-Cité Hospital, AP-HP; French National Reference Center Listeria, Biology of Infection Unit, Inserm U1117, Institut Pasteur, France
| | - Manuel Etienne
- Department of Infectious Diseases, Hôpital Charles Nicolle, Rouen, France
| | - Jerome Pacanowski
- Department of Infectious Diseases, Hôpital Saint-Antoine, AP-HP, Paris, France
| | - Nathalie Grall
- Infection Antimicrobials Modelling Evolution (IAME) Research Group, UMR 1137, Université Paris Cité et Inserm, Paris, France
- Department of Bacteriology, Hôpital Bichat, AP-HP, Paris, France
| | - Kristell Desseaux
- Department of Biostatistics, Hôpital Saint-Louis, AP-HP, Paris, France
| | - Florence Empana-Barat
- Clinical Trial Department, Agence Générale des Équipements et Produits de Santé, AP-, Paris, France
| | | | - Béatrice Bercot
- Infection Antimicrobials Modelling Evolution (IAME) Research Group, UMR 1137, Université Paris Cité et Inserm, Paris, France
- Department of Microbiology, Hôpital Saint-Louis-Hôpital Lariboisière, AP-HP, Paris, France
| | - Jean-Michel Molina
- Department of Infectious Diseases, Hôpital Saint-Louis-Hôpital Lariboisière, AP-HP, Paris, France; Université Paris Cité, Inserm UMR 941, Paris, France
| | - Agnès Lefort
- Department of Internal Medicine, Hôpital Beaujon, AP-HP, Clichy, France
- Infection Antimicrobials Modelling Evolution (IAME) Research Group, UMR 1137, Université Paris Cité et Inserm, Paris, France
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10
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Khan A, Andleeb A, Azam M, Tehseen S, Mehmood A, Yar M. Aloe vera and ofloxacin incorporated chitosan hydrogels show antibacterial activity, stimulate angiogenesis and accelerate wound healing in full thickness rat model. J Biomed Mater Res B Appl Biomater 2023; 111:331-342. [PMID: 36053925 DOI: 10.1002/jbm.b.35153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Revised: 07/18/2022] [Accepted: 08/17/2022] [Indexed: 12/15/2022]
Abstract
Burns are potentially fatal and physically debilitating injuries, causing psychological and physical scars and result in chronic disabilities. A well vascularized wound bed is required to achieve complete and scar free wound closure. For many centuries, a variety of herbal plants have been used for wound healing, among these aloe vera (AV) has been found to be very effective in wound healing. Secondly, the main reason for delayed wound healing is bacterial infections. Ofloxacin (OX) has been reported as an active antibacterial drug for topical infections and it is effective against both positive and negative bacterial strains. In current research three different concentrations of OX (0.5, 2.5, and 5 mg) were loaded into chitosan (CS)/AV based hydrogels prepared by freeze gelation. The surface morphology of prepared CS/AV based OX loaded hydrogels were evaluated by scanning electron microscopy (SEM). In drug release analysis, 0.5 mg OX loaded hydrogel showed a sustained drug release behavior over 3 days period. An effective dose dependent antibacterial activity was exhibited by OX loaded hydrogels. Alamar Blue cells viability assay revealed that 0.5 mg OX hydrogel (CA 0.5 OX) showed comparatively better 3 T3 fibroblast cells proliferation as compared to CA 2.5 OX (2.5 mg OX) and CA 5 OX hydrogel (5 mg OX). Moreover, all OX loaded hydrogels showed good angiogenic activity in CAM bioassay while higher angiogenic potential was observed from CA 0.5 OX containing comparatively lower concentration of OX. These OX incorporated CS/AV based hydrogels are promising wound dressings for future clinical use.
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Affiliation(s)
- Ahmad Khan
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, Lahore, Pakistan
| | - Anisa Andleeb
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, Lahore, Pakistan
| | - Maryam Azam
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, Lahore, Pakistan
| | - Saimoon Tehseen
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, Lahore, Pakistan
| | - Azra Mehmood
- National Center of Excellence in Molecular Biology (CEMB), University of the Punjab, Lahore, Pakistan
| | - Muhammad Yar
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, Lahore, Pakistan
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11
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Pearce JG, Naunton M, Maddess T. A Literature-Based Review and Analysis of the Pharmacodynamics of the Dose Frequency of Topical 0.3% Cipr ofloxacin and 0.3% Ofloxacin in the Day-1 Treatment of Bacterial Keratitis. J Ocul Pharmacol Ther 2023; 39:17-26. [PMID: 36454630 DOI: 10.1089/jop.2022.0110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
Purpose: To determine the appropriate dose frequency for the second-generation fluoroquinolones (2FQs), ciprofloxacin 0.3% and ofloxacin 0.3%, in the day-1 treatment of bacterial keratitis (BK) based on the corneal concentrations achievable and required Minimum Inhibitory Concentration90 (MIC90) of common BK isolates. Methods: Literature-based ocular MIC90 required to treat bacterial isolates of BK patients were determined for each fluoroquinolone. Published corneal concentrations for each 2FQ, and the drop regimens used to reach these concentrations, were then analyzed to determine the relationship between the corneal 2FQ concentration and the amount of drug applied per hour and the total amount applied. Results: Significant relationships were found to exist for corneal concentrations of both ciprofloxacin and ofloxacin and the amount of drug applied per hour (both P = 0.005), and the total amount of drug applied (P = 0.003 and P = 0.0004, respectively). Derived ciprofloxacin drops/hour corneal concentrations agreed well with both a literature-based regimen and the manufacturers' day-1 drop regimen for various MIC90. Derived ofloxacin drops per hour indicated a higher rate than that suggested by the manufacturer. Conclusions: Both a literature-based and the manufacturers' drop regimens for the day-1 treatment of BK using 0.3% ciprofloxacin have a pharmacodynamic basis, which is related to the required MIC90 of commonly encountered isolates in BK. Dose frequency for 0.3% ofloxacin should be in line with the manufacturers' maximum suggested drop regimen. Commonly suggested drop regimens below these recommendations for either FQ may need to be revised in view of these findings.
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Affiliation(s)
- John Graham Pearce
- John Curtin School of Medical Research, Australian National University, Canberra, Australia
| | - Mark Naunton
- Discipline of Pharmacy, School of Health Sciences, University of Canberra, Canberra, Australia
| | - Ted Maddess
- John Curtin School of Medical Research, Australian National University, Canberra, Australia
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12
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Pinheiro LCS, Borges JC, Campos VR, Dantas LC. An Overview of Treatment Guidelines and Methods of Synthesis of Drugs Used in Leprosy Chemotherapy. Mini Rev Med Chem 2023; 23:497-512. [PMID: 35430972 DOI: 10.2174/1389557522666220415233627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Revised: 12/18/2021] [Accepted: 02/18/2022] [Indexed: 11/22/2022]
Abstract
Leprosy is a Neglected Tropical Disease (NTDs) caused by Mycobacterium leprae (M. leprae). The treatment is considered effective, however, the high dose Multidrug Therapy (MDT) for a long period and its adverse effects result in the abandonment of the treatment by patients. Indeed, antimicrobial resistance is still an obstacle that must be overcome in the treatment of leprosy. In the present article, we reviewed the WHO guidelines for the chemotherapy of leprosy and the methods of synthesis of these drugs.
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Affiliation(s)
- Luiz C S Pinheiro
- Departamento de Ciências, Faculdade de Formação de Professores, Universidade do Estado do Rio de Janeiro, São Gonçalo, RJ, Brazil
| | - Julio C Borges
- Instituto Federal de Educação, Ciência e Tecnologia do Rio de Janeiro, Campus Nilópolis, RJ, Brazil
| | - Vinicius R Campos
- Instituto de Química, Departamento de Química Orgânica, Universidade Federal Fluminense, Programa de Pós-Graduação em Química, Niterói, RJ, Brazil
| | - Leonardo C Dantas
- Instituto de Química, Departamento de Química Orgânica, Universidade Federal Fluminense, Programa de Pós-Graduação em Química, Niterói, RJ, Brazil
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13
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Ren Y, Chen B, Zhao J, Tan X, Chen X, Zhou L, Wang F, Peng Y, Jiang J. Trends of Rifampicin Resistance in Patients with Pulmonary Tuberculosis: A Longitudinal Analysis Based on Drug Resistance Screening in Eastern China Between 2015 and 2019. Infect Drug Resist 2022; 15:7707-7717. [PMID: 36597456 PMCID: PMC9805726 DOI: 10.2147/idr.s394089] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Accepted: 12/14/2022] [Indexed: 12/29/2022] Open
Abstract
Objective To understand the trend of overall rifampicin resistance rates for tuberculosis in Zhejiang Province between 2015 and 2019. Methods The basic demographic information of patients with tuberculosis who were screened for drug resistance in Zhejiang Province between January 1, 2015 and December 31, 2019 was collected through the national Tuberculosis Information Management System. The data were processed and analyzed using IBM SPSS 26.0 and GeoDa 1.14 software. Results The total rifampicin resistance rate was 5.9% in 53,893 validated cases of drug resistance screening conducted in patients with pulmonary tuberculosis in Zhejiang Province during the study period. There was a decreasing trend in the rifampicin resistance rate in both initial and re-treated patients (P<0.001), but the rifampicin resistance rate was higher in re-treated TB patients than in TB patients receiving their initial treatment (11.4% vs 4.2%). The rate of drug resistance steadily decreased in all prefectures, and there was a significant upward trend in the use of the Xpert MTB/RIF rapid assay. An increasing trend was also identified in the rate of rifampicin and ofloxacin co-resistance (P<0.001). Conclusion The overall rate of rifampin resistance in patients with tuberculosis in Zhejiang Province in the past five years has shown a decreasing trend, but the rate of resistance to ofloxacin was high. Resistance testing to fluoroquinolones should be carried out as early as possible in patients whose diagnosis results indicate rifampin resistance, and more effective second-line treatment plans should be developed based on the results of this testing.
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Affiliation(s)
- Yanli Ren
- School of Public Health, Hangzhou Normal University, Hangzhou, People’s Republic of China
| | - Bin Chen
- Zhejiang Center for Disease Control and Prevention, Hangzhou, People’s Republic of China
| | - Jiaying Zhao
- School of Public Health, Xiamen University, Fujian, People’s Republic of China
| | - Xiaohua Tan
- School of Public Health, Hangzhou Normal University, Hangzhou, People’s Republic of China
| | - Xinyi Chen
- Zhejiang Center for Disease Control and Prevention, Hangzhou, People’s Republic of China
| | - Lin Zhou
- Zhejiang Center for Disease Control and Prevention, Hangzhou, People’s Republic of China
| | - Fei Wang
- Zhejiang Center for Disease Control and Prevention, Hangzhou, People’s Republic of China
| | - Ying Peng
- Zhejiang Center for Disease Control and Prevention, Hangzhou, People’s Republic of China,Correspondence: Ying Peng; Jianmin Jiang, Email ;
| | - Jianmin Jiang
- School of Public Health, Hangzhou Normal University, Hangzhou, People’s Republic of China,Zhejiang Center for Disease Control and Prevention, Hangzhou, People’s Republic of China
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14
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Kumar NG, Nieto V, Kroken AR, Jedel E, Grosser MR, Hallsten ME, Mettrucio MME, Yahr TL, Evans DJ, Fleiszig SMJ. Pseudomonas aeruginosa Can Diversify after Host Cell Invasion to Establish Multiple Intracellular Niches. mBio 2022; 13:e0274222. [PMID: 36374039 DOI: 10.1128/mbio.02742-22] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Within epithelial cells, Pseudomonas aeruginosa depends on its type III secretion system (T3SS) to escape vacuoles and replicate rapidly in the cytosol. Previously, it was assumed that intracellular subpopulations remaining T3SS-negative (and therefore in vacuoles) were destined for degradation in lysosomes, supported by data showing vacuole acidification. Here, we report in both corneal and bronchial human epithelial cells that vacuole-associated bacteria can persist, sometimes in the same cells as cytosolic bacteria. Using a combination of phase-contrast, confocal, and correlative light-electron microscopy (CLEM), we also found they can demonstrate biofilm-associated markers: cdrA and cyclic-di-GMP (c-di-GMP). Vacuolar-associated bacteria, but not their cytosolic counterparts, tolerated the cell-permeable antibiotic ofloxacin. Surprisingly, use of mutants showed that both persistence in vacuoles and ofloxacin tolerance were independent of the biofilm-associated protein CdrA or exopolysaccharides (Psl, Pel, alginate). A T3SS mutant (ΔexsA) unable to escape vacuoles phenocopied vacuole-associated subpopulations in wild-type PAO1-infected cells, with results revealing that epithelial cell death depended upon bacterial viability. Intravital confocal imaging of infected mouse corneas confirmed that P. aeruginosa formed similar intracellular subpopulations within epithelial cells in vivo. Together, these results show that P. aeruginosa differs from other pathogens by diversifying intracellularly into vacuolar and cytosolic subpopulations that both contribute to pathogenesis. Their different gene expression and behavior (e.g., rapid replication versus slow replication/persistence) suggest cooperation favoring both short- and long-term interests and another potential pathway to treatment failure. How this intracellular diversification relates to previously described "acute versus chronic" virulence gene-expression phenotypes of P. aeruginosa remains to be determined. IMPORTANCE Pseudomonas aeruginosa can cause sight- and life-threatening opportunistic infections, and its evolving antibiotic resistance is a growing concern. Most P. aeruginosa strains can invade host cells, presenting a challenge to therapies that do not penetrate host cell membranes. Previously, we showed that the P. aeruginosa type III secretion system (T3SS) plays a pivotal role in survival within epithelial cells, allowing escape from vacuoles, rapid replication in the cytoplasm, and suppression of host cell death. Here, we report the discovery of a novel T3SS-negative subpopulation of intracellular P. aeruginosa within epithelial cells that persist in vacuoles rather than the cytoplasm and that tolerate a cell-permeable antibiotic (ofloxacin) that is able to kill cytosolic bacteria. Classical biofilm-associated markers, although demonstrated by this subpopulation, are not required for vacuolar persistence or antibiotic tolerance. These findings advance our understanding of how P. aeruginosa hijacks host cells, showing that it diversifies into multiple populations with T3SS-negative members enabling persistence while rapid replication is accomplished by more vulnerable T3SS-positive siblings. Intracellular P. aeruginosa persisting and tolerating antibiotics independently of the T3SS or biofilm-associated factors could present additional challenges to development of more effective therapeutics.
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15
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Ye M, Fang Y, Xiang H, Liu H, Yan H, Wang B, Lin X, Liang J, Qian W. Preparation and modification of bagasse biochar unveiling ofloxacin wastewater adsorption. Environ Technol 2022:1-12. [PMID: 36420739 DOI: 10.1080/09593330.2022.2152222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 11/18/2022] [Indexed: 06/16/2023]
Abstract
Currently, ofloxacin (OFX) is widely used in various medical treatment and aquaculture industries. However, its production and application produces waste which pollutes the natural environment and causes ecological damage. The application of biochar is a crucial way to remove OFX antibiotics from wastewater. In this paper, bagasse was used as the material to be pyrolyzed to obtain bagasse biochar (BC). BC was modified with HNO3 and KOH to prepare acid-modified sugarcane biochar (HBC) and alkali-modified sugarcane biochar and subsequently applied to the treatment of ofloxacin wastewater. The results showed that the adsorption capacity of HBC was 2.2 times higher than that of BC, and it had better adsorption performance. When the dosage of acid-modified biochar was 1 g/L and the initial pH of the solution was 7.0, the OFX removal rate reached 88.5% after 90 min of reaction. HBC has good stability, and the OFX removal efficiency is still up to 78.5% after 5 cycles. According to the adsorption simulation results, the adsorption of the three biochar materials is more consistent with the Freundlich adsorption model, and the simulated linear correlation coefficient is higher than 0.99. The Kfr value of HBC is 6.6042, which exhibits the highest adsorption capacity. Moreover, the three biochars exhibit better simulation results in pseudo-second-order kinetics fitting, and the linear correlation coefficients are above 0.99. The adsorption mechanism of bagasse biochar for ofloxacin in wastewater was π-π electron donor-acceptor interactions. The results show that bagasse biochar has good feasibility in the treatment of ofloxacin wastewater.
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Affiliation(s)
- Maoyou Ye
- College of Resources and Environment, Zhongkai University of Agriculture and Engineering, Guangzhou, People's Republic of China
| | - Yi Fang
- College of Resources and Environment, Zhongkai University of Agriculture and Engineering, Guangzhou, People's Republic of China
| | - Hongjing Xiang
- Guangdong Environmental Protection Engineering Research & Design Institute Co., Ltd, Guangzhou, People's Republic of China
| | - Hui Liu
- College of Resources and Environment, Zhongkai University of Agriculture and Engineering, Guangzhou, People's Republic of China
| | - Huimin Yan
- College of Resources and Environment, Zhongkai University of Agriculture and Engineering, Guangzhou, People's Republic of China
| | - Bingmin Wang
- College of Resources and Environment, Zhongkai University of Agriculture and Engineering, Guangzhou, People's Republic of China
| | - Xinle Lin
- College of Resources and Environment, Zhongkai University of Agriculture and Engineering, Guangzhou, People's Republic of China
| | - Jialin Liang
- College of Resources and Environment, Zhongkai University of Agriculture and Engineering, Guangzhou, People's Republic of China
| | - Wei Qian
- College of Resources and Environment, Zhongkai University of Agriculture and Engineering, Guangzhou, People's Republic of China
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16
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Yin L, Zhang PP, Wang W, Tang S, Deng SM, Jia AQ. 3-Phenylpropan-1-Amine Enhanced Susceptibility of Serratia marcescens to Ofloxacin by Occluding Quorum Sensing. Microbiol Spectr 2022; 10:e0182922. [PMID: 35972277 PMCID: PMC9603881 DOI: 10.1128/spectrum.01829-22] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 08/01/2022] [Indexed: 12/31/2022] Open
Abstract
Serratia marcescens (S. marcescens) is an environmental bacterium that causes infections with high morbidity and mortality. Notably, infections caused by multidrug-resistant S. marcescens have become a global public health issue. Therefore, the discovery of promising compounds to reduce the virulence of pathogens and restore antibiotic activity against multidrug-resistant bacteria is critical. Quorum sensing (QS) regulates virulence factors and biofilm formation of microorganisms to increase their pathogenicity and is, therefore, an important factor in the formation of multidrug resistance. In this study, we found that 3-phenylpropan-1-amine (3-PPA) inhibited S. marcescens NJ01 biofilm formation and virulence factors, including prodigiosin, protease, lipase, hemolysin, and swimming. The combination of 3-PPA (50.0 μg/mL) and ofloxacin (0.2 μg/mL) enhanced S. marcescens NJ01 sensitivity to ofloxacin. Based on crystalline violet staining, scanning electron microscopy (SEM), and confocal laser scanning microscopy (CLSM), 3-PPA (50.0 μg/mL) reduced S. marcescens NJ01 biofilm formation by 48%. Quantitative real-time PCR (qRT-PCR) showed that 3-PPA regulated the expression of virulence- and biofilm-related genes fimA, fimC, bsmB, pigP, flhC, flhD, and sodB. Liquid chromatography-tandem mass spectrometry (LC-MS/MS) indicated that 3-PPA affected intracellular metabolites of S. marcescens NJ01, leading to reduce metabolic activity. These results suggested that 3-PPA inhibits the pathogenicity of S. marcescens NJ01 by occluding QS. Thus, 3-PPA is feasible as an ofloxacin adjuvant to overcome multidrug-resistant S. marcescens and improve the treatment of intractable infections. IMPORTANCE Multidrug-resistant bacteria have become a major threat to global public health, leading to increased morbidity, mortality, and health care costs. Bacterial virulence factors and biofilms, which are regulated by quorum sensing (QS), are the primary causes of multidrug resistance. In this study, 3-PPA reduced virulence factors and eliminated biofilm formation by inhibiting QS in S. marcescens NJ01 bacteria, without affecting bacterial growth, thus restoring sensitivity to ofloxacin. Thus, the discovery of compounds that can restore antibiotic activity against bacteria is a promising strategy to mitigate multidrug resistance in pathogens.
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Affiliation(s)
- Lujun Yin
- Key Laboratory of Tropical Biological Resources of Ministry of Education, School of Pharmaceutical Sciences, Hainan University, Haikou, China
- One Health Institute, Hainan University, Haikou, China
| | - Ping-Ping Zhang
- Key Laboratory of Tropical Biological Resources of Ministry of Education, School of Pharmaceutical Sciences, Hainan University, Haikou, China
| | - Wei Wang
- Key Laboratory of Tropical Biological Resources of Ministry of Education, School of Pharmaceutical Sciences, Hainan University, Haikou, China
- One Health Institute, Hainan University, Haikou, China
| | - Shi Tang
- Key Laboratory of Tropical Biological Resources of Ministry of Education, School of Pharmaceutical Sciences, Hainan University, Haikou, China
| | - Shi-Ming Deng
- Key Laboratory of Tropical Biological Resources of Ministry of Education, School of Pharmaceutical Sciences, Hainan University, Haikou, China
| | - Ai-Qun Jia
- Key Laboratory of Tropical Biological Resources of Ministry of Education, School of Pharmaceutical Sciences, Hainan University, Haikou, China
- One Health Institute, Hainan University, Haikou, China
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17
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Papaphilippou PC, Marinica OM, Tanasă E, Mpekris F, Stylianopoulos T, Socoliuc V, Krasia-Christoforou T. Ofloxacin Removal from Aqueous Media by Means of Magnetoactive Electrospun Fibrous Adsorbents. Nanomaterials (Basel) 2022; 12:3648. [PMID: 36296838 PMCID: PMC9608509 DOI: 10.3390/nano12203648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 10/13/2022] [Accepted: 10/14/2022] [Indexed: 06/16/2023]
Abstract
Functionalized electrospun polymer microfibrous membranes were fabricated by electrospinning and further surface-functionalized with magnetic iron oxide (FexOy) nanoparticles to yield magnetoactive nanocomposite fibrous adsorbents. The latter were characterized in respect to their morphology, mechanical properties and magnetic properties while they were further evaluated as substrates for removing Ofloxacin (OFL) from synthetic aqueous media and secondary urban wastewater (UWW) under varying physicochemical parameters, including the concentration of the pharmaceutical pollutant, the solution pH and the membranes' magnetic content. The magnetic-functionalized fibrous adsorbents demonstrated significantly enhanced adsorption efficacy in comparison to their non-functionalized fibrous analogues while their magnetic properties enabled their magnetic recovery and regeneration.
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Affiliation(s)
- Petri Ch. Papaphilippou
- Department of Mechanical and Manufacturing Engineering, School of Engineering, University of Cyprus, Nicosia 1678, Cyprus
- Department of Life Sciences, School of Science, European University Cyprus, Nicosia 2404, Cyprus
| | - Oana Maria Marinica
- Research Center for Engineering of Systems with Complex Fluids, Politehnica University Timisoara, 300222 Timisoara, Romania
| | - Eugenia Tanasă
- Faculty of Applied Chemistry and Materials Science, Politehnica University of Bucharest, 060042 Bucharest, Romania
| | - Fotios Mpekris
- Department of Mechanical and Manufacturing Engineering, School of Engineering, University of Cyprus, Nicosia 1678, Cyprus
| | - Triantafyllos Stylianopoulos
- Department of Mechanical and Manufacturing Engineering, School of Engineering, University of Cyprus, Nicosia 1678, Cyprus
| | - Vlad Socoliuc
- Laboratory of Magnetic Fluids, Center for Fundamental and Advanced Technical Research, Romania Academy—Timisoara Branch, 300223 Timisoara, Romania
| | - Theodora Krasia-Christoforou
- Department of Mechanical and Manufacturing Engineering, School of Engineering, University of Cyprus, Nicosia 1678, Cyprus
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Kundu A, Maity B, Basu S. Rice Husk-Derived Carbon Quantum Dots-Based Dual-Mode Nanoprobe for Selective and Sensitive Detection of Fe 3+ and Fluoroquinolones. ACS Biomater Sci Eng 2022; 8:4764-4776. [PMID: 36200295 DOI: 10.1021/acsbiomaterials.2c00798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Herein, eco-friendly, water-soluble, and fluorescent carbon quantum dots (CQDs) with an average size of 8.3 nm were synthesized from rice husk (RH) using the hydrothermal method, and the CQDs were labeled as rice husk CQDs (RH-CQDs). The composition and surface functionalities were studied using X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, and Raman spectroscopy. A study on the impact of pH and irradiation time on fluorescence affirmed the stability of RH-CQDs. The as-synthesized nanosensor has high selectivity and sensitivity for Fe3+ ions. Several photophysical studies were performed to investigate the interaction between RH-CQDs and Fe3+. Using the time-correlated single-photon technique, it is determined that the average lifetime value of RH-CQDs significantly decreases in the presence of Fe3+, which supports a dynamic quenching mechanism. The developed sensor exhibited excellent sensitivity with a detection limit in the nanomolar range (149 nM) with a wide linear range of 0-1300 nM for Fe3+ ions. The prepared nanosensor was also used to detect Fe3+ in a tablet supplement with high recoveries. Moreover, the RH-CQD nanoprobe was used to detect other analytes (fluoroquinolones) using the fluorescence enhancement technique. It showed high selectivity and sensitivity toward ofloxacin (OFX) and ciprofloxacin (CPX). The detection limits calculated were 150 nM and 127 nM with a linearity range of 50-1150 nM for OFX and CPX, respectively. The enhancement of the average lifetime value and quantum yield in the presence of OFX and CPX favors the increased fluorescence property of RH-CQDs through hydrogen bonding and charge transfer. In this work, the integration of two different mechanisms (fluorescence quenching and fluorescence enhancement) was followed to construct a single sensing platform for accurate quantification of dual-mode nanosensors for the detection of metal ions and fluoroquinolones by the excited-state electron transfer and hydrogen bonding mechanism, respectively. This strategy also stimulates the detection of more than one analyte.
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Affiliation(s)
- Aayushi Kundu
- School of Chemistry and Biochemistry, SRF─TIET-Virginia Tech Center of Excellence in Emerging Materials, Thapar Institute of Engineering and Technology, Patiala147004, India
| | - Banibrata Maity
- School of Chemistry and Biochemistry, Affiliate Faculty─TIET-Virginia Tech Center of Excellence in Emerging Materials, Thapar Institute of Engineering and Technology, Patiala147004, India
| | - Soumen Basu
- School of Chemistry and Biochemistry, Affiliate Faculty─TIET-Virginia Tech Center of Excellence in Emerging Materials, Thapar Institute of Engineering and Technology, Patiala147004, India
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19
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Nolden AA, Hayes JE, Feeney EL. Variation in TAS2R receptor genes explains differential bitterness of two common antibiotics. Front Genet 2022; 13:960154. [PMID: 35967977 PMCID: PMC9366911 DOI: 10.3389/fgene.2022.960154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 06/29/2022] [Indexed: 11/17/2022] Open
Abstract
For pharmaceuticals to deliver their full benefits with maximum efficacy, patients need to follow recommended dosing schedules, in terms of amount and frequency. Unfortunately, the aversive taste of many drugs, especially bitterness, can reduce patient compliance in oral liquid formulations. Given common genetic differences in bitter taste receptor genes (TAS2Rs), some individuals may be at increased risk for poor compliance due to heightened bitterness that becomes a barrier to proper use. Here we report on the sensory profile of two antibiotics, chloramphenicol and ofloxacin, investigating whether bitterness intensity associates with nominally functional TAS2R variants. Participants (n = 143) rated suprathreshold intensity on a general Labeled Magnitude Scale (gLMS) for chloramphenicol and ofloxacin; propylthiouracil (PROP) was included as a control, given robust prior associations with TAS2R38 variants. The dominant sensation from chloramphenicol and ofloxacin was bitterness, falling just below “moderate” on a gLMS. TAS2R38 diplotype associated with variable bitterness of chloramphenicol and PROP, but not ofloxacin. The bitterness of ofloxacin associated with a TAS2R9 SNP (V187A). This pilot study provides novel evidence on differences in the bitterness from two antibiotics, which are associated with TAS2R variants. Improved understanding of individualized barriers to patient compliance, especially for oral formulations, can guide future efforts to optimize delivery systems for improved compliance.
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Affiliation(s)
- Alissa A Nolden
- Department of Food Science, University of Massachusetts, Amherst, MA, United States
| | - John E Hayes
- Department of Food Science, The Pennsylvania State University, University Park, PA, United States
| | - Emma L Feeney
- Institute of Food and Health, University College Dublin, Dublin, Ireland
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20
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Kagkelaris K, El Mubarak MA, Plotas P, Panaretos D, Panayiotakopoulos GD, Sivolapenko GB, Georgakopoulos CD. Aqueous Humour Ofloxacin Concentration after Topical Instillation in Patients with Dry Eye Disease. Medicina (Kaunas) 2022; 58:medicina58081031. [PMID: 36013498 PMCID: PMC9414636 DOI: 10.3390/medicina58081031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 07/26/2022] [Accepted: 07/28/2022] [Indexed: 11/17/2022]
Abstract
Background and Objectives: A prospective, randomized clinical trial was conducted to evaluate the concentration of ofloxacin in the aqueous humour (AqH) of patients suffering from dry eye disease (DED) after topical instillation. Materials and Methods: Ninety-one (91) cataract patients scheduled for phacoemulsification were categorized into three groups according to DED severity. Group I (n = 17) was comprised of subjects without DED, patients in group II (n = 37) were evaluated as having non-severe DED, while group III (n = 37) consisted of patients suffering from severe DED. Preoperatively, patients received 4 drops of 0.3% of ofloxacin at 15 min intervals. One hour after the last instillation, aqueous samples were collected intraoperatively. Results: The median AqH concentration of ofloxacin in group I was 199.9 ng/mL (range 92.2−442.8 ng/mL), while in group II it was 530.5 ng/mL (range 283.7−1004.9 ng/mL), and 719.2 ng/mL (range 358.0−1512.4 ng/mL) in Group III, p < 0.001 (Kruskal-Wallis tests). Pairwise tests (two-tailed with Bonferroni corrections) between groups resulted in a p-value of 0.001 when group II was compared to group I and group III was compared to group I, and a p-value of 0.020 when group II was compared to group III. The severity of DED, across groups I, II, and III, and the levels of ofloxacin revealed a strong positive correlation (r = 0.639, p < 0.001). Conclusions: Ofloxacin concentration in the AqH after topical drop instillation may be affected by the degree of ocular surface inflammation in patients suffering from DED.
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Affiliation(s)
- Konstantinos Kagkelaris
- Department of Ophthalmology, School of Medicine, University of Patras, 26504 Patras, Greece;
- Pharmacology Laboratory, School of Medicine, University of Patras, 26504 Patras, Greece;
- Correspondence:
| | - Mohamed A. El Mubarak
- Laboratory of Pharmacokinetics, Department of Pharmacy, University of Patras, 26504 Patras, Greece; (M.A.E.M.); (G.B.S.)
| | - Panagiotis Plotas
- Lab Primary Health Care, School of Health Rehabilitation Sciences, University of Patras, 26504 Patras, Greece;
| | - Dimitris Panaretos
- Laboratory of Clinical Pharmacology, School of Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece;
| | | | - Gregory B. Sivolapenko
- Laboratory of Pharmacokinetics, Department of Pharmacy, University of Patras, 26504 Patras, Greece; (M.A.E.M.); (G.B.S.)
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Yin Y, Yin Y, Yang H, Chen Z, Zheng J, Peng B. Vibrio alginolyticus Survives From Ofloxacin Stress by Metabolic Adjustment. Front Microbiol 2022; 13:818923. [PMID: 35369464 PMCID: PMC8966707 DOI: 10.3389/fmicb.2022.818923] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Accepted: 01/19/2022] [Indexed: 01/22/2023] Open
Abstract
Antibiotic-resistant Vibrio alginolyticus becomes a worldwide challenge threatening both human health and food safety. The approach in managing such infection is largely absent, despite the fact that the mechanisms of antibiotic resistance have been extensively investigated. Metabolic modulation has been documented to be a novel approach in improving antibiotic efficacy. In this study, we characterize the metabolic signature of V. alginolyticus exposed to 0.3 or 0.5 μg/ml of ofloxacin (OFX). By profiling the metabolome, we find that bacteria treated by the two different concentrations of OFX generate different metabolic signatures. While a part of these metabolites was shared by both groups, the other metabolites represent their own signatures. The pathway enrichment analysis demonstrates that the pyruvate cycle is disrupted in the bacteria treated by the 0.3 μg/ml OFX as compared to those by the 0.5 μg/ml. Importantly, the disruption of pyruvate cycle confers the capability of bacteria to survive under 0.5 μg/ml of antibiotic stress. Further analysis identifies that the fatty acid biosynthesis is elevated in bacteria treated by 0.3 μg/ml OFX, and inhibition on fatty acid completely prevents the bacteria from survival even under such dose of antibiotic stress. Our study suggests that bacteria adapt to antibiotic stress by modulating the metabolic flux for survival, which could be targeted to increase antibiotic efficacy.
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Affiliation(s)
- Yue Yin
- State Key Laboratory of Biocontrol, Guangdong Key Laboratory of Pharmaceutical Functional Genes, School of Life Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Higher Education Mega Center, Sun Yat-sen University, Guangzhou, China.,Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Yuanpan Yin
- State Key Laboratory of Biocontrol, Guangdong Key Laboratory of Pharmaceutical Functional Genes, School of Life Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Higher Education Mega Center, Sun Yat-sen University, Guangzhou, China.,Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Hao Yang
- State Key Laboratory of Biocontrol, Guangdong Key Laboratory of Pharmaceutical Functional Genes, School of Life Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Higher Education Mega Center, Sun Yat-sen University, Guangzhou, China.,Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Zhuanggui Chen
- Department of Pediatrics, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Jun Zheng
- Faculty of Health Sciences, University of Macau, Taipa, Macau SAR, China
| | - Bo Peng
- State Key Laboratory of Biocontrol, Guangdong Key Laboratory of Pharmaceutical Functional Genes, School of Life Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Higher Education Mega Center, Sun Yat-sen University, Guangzhou, China.,Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
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22
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Alghamdi YG, Krishnakumar B, Malik MA, Alhayyani S. Design and Preparation of Biomass-Derived Activated Carbon Loaded TiO 2 Photocatalyst for Photocatalytic Degradation of Reactive Red 120 and Ofloxacin. Polymers (Basel) 2022; 14:polym14050880. [PMID: 35267703 PMCID: PMC8912609 DOI: 10.3390/polym14050880] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 01/30/2022] [Accepted: 02/14/2022] [Indexed: 01/27/2023] Open
Abstract
The design and development of novel photocatalysts for treating toxic substances such as industrial waste, dyes, pesticides, and pharmaceutical wastes remain a challenging task even today. To this end, a biowaste pistachio-shell-derived activated carbon (AC) loaded TiO2 (AC-TiO2) nanocomposite was fabricated and effectively utilized towards the photocatalytic degradation of toxic azo dye Reactive Red 120 (RR 120) and ofloxacin (OFL) under UV-A light. The synthesized materials were characterized for their structural and surface morphology features through various spectroscopic and microscopic techniques, including high-resolution transmission electron microscope (HR-TEM), field emission scanning electron microscope (FE-SEM) along with energy dispersive spectra (EDS), diffuse reflectance spectra (DRS), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, photoluminescence spectra (PL) and BET surface area measurements. AC-TiO2 shows enhanced photocatalytic activity compared to bare TiO2 due to the change in the bandgap energy and effective charge separation. The degradation rate of dyes was affected by the bandgap of the semiconductor, which was the result of the deposition weight percentage of AC onto the TiO2. The presence of AC influences the photocatalytic activity of AC-TiO2 composite towards RR 120 and OFL degradation. The presence of heteroatoms-enriched AC enhances the charge mobility and suppresses the electron-hole recombination in AC-TiO2 composite, which enhances the photocatalytic activity of the composite. The hybrid material AC-TiO2 composite displayed a higher photocatalytic activity against Reactive Red 120 and ofloxacin. The stability of the AC-TiO2 was tested against RR 120 dye degradation with multiple runs. GC-MS analyzed the degradation intermediates, and a suitable degradation pathway was also proposed. These results demonstrate that AC-TiO2 composite could be effectively used as an ecofriendly, cost-effective, stable, and highly efficient photocatalyst.
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Affiliation(s)
- Yousef Gamaan Alghamdi
- Chemistry Department, Faculty of Sciences, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia;
| | - Balu Krishnakumar
- Environmental Science and Engineering Laboratory, Department of Civil Engineering, Yeungnam University, Geongsan 38541, Korea
- Correspondence: or (B.K.); or (M.A.M.)
| | - Maqsood Ahmad Malik
- Chemistry Department, Faculty of Sciences, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia;
- Correspondence: or (B.K.); or (M.A.M.)
| | - Sultan Alhayyani
- Department of Chemistry, College of Sciences & Arts, King Abdulaziz University, P.O. Box 344, Rabigh 21911, Saudi Arabia;
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Abstract
Bacterial persisters are nongrowing cells highly tolerant to bactericidal antibiotics. However, this tolerance is reversible and not mediated by heritable genetic changes. Lon, an ATP-dependent protease, has repeatedly been shown to play a critical role in fluoroquinolone persistence in Escherichia coli. Although lon deletion (Δlon) is thought to eliminate persister cells via accumulation of the cell division inhibitor protein SulA, the exact mechanism underlying this phenomenon is not yet elucidated. Here, we show that Lon is an important regulatory protein for the resuscitation of the fluoroquinolone persisters in E. coli, and lon deletion impairs the ability of persister cells to form colonies during recovery through a sulA- and ftsZ-dependent mechanism. Notably, this observed "viable but nonculturable" state of antibiotic-tolerant Δlon cells is transient, as environmental conditions, such as starvation, can restore their culturability. Our data further indicate that starvation-induced SulA degradation or expression of Lon during recovery facilitates Z-ring formation in Δlon persisters, and Z-ring architecture is important for persister resuscitation in both wild-type and Δlon strains. Our in-depth image analysis clearly shows that the ratio of cell length to number of FtsZ rings for each intact ofloxacin-treated cell predicts the probability of resuscitation and, hence, can be used as a potential biomarker for persisters. IMPORTANCE The ATP-dependent Lon protease is one of the most studied bacterial proteases. Although deletion of lon has been frequently shown to reduce fluoroquinolone persistence, the proposed mechanisms underlying this phenomenon are highly controversial. Here, we have shown that lon deletion in Escherichia coli impairs the ability of persister cells to form colonies during recovery and that this reduction of persister levels in lon-deficient cells can be transient. We also found that altered Z-ring architecture is a key biomarker in both wild-type and lon-deficient persister cells transitioning to a normal cell state. Collectively, our findings highlight the importance of differentiating persister formation mechanisms from resuscitation mechanisms and underscore the critical role of the nonculturable cell state in antibiotic tolerance.
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24
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Liu J, Wang X. Ofloxacin-Loaded Niosome-Laden Contact Lens: Improved Properties of Biomaterial for Ocular Drug Delivery. AAPS PharmSciTech 2021; 23:6. [PMID: 34851496 DOI: 10.1208/s12249-021-02157-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Accepted: 10/04/2021] [Indexed: 12/17/2022] Open
Abstract
Currently, bacterial conjunctivitis is managed by multiple antibiotic eye-drop solution, which is highly inefficient due to low ocular bioavailability and frequent dosing. Therapeutic soft contact lenses can be used to sustain the release of ocular drugs. However, the conventional soaking method (economic and widely used) showed low drug uptake and high burst release, and the optophysical properties of the contact lens were altered for clinical application. In this paper, novel ofloxacin-loaded niosomes were developed to increase the drug loading capacity of contact lenses while also sustaining ocular drug delivery. Ofloxacin-loaded niosomes were prepared by the thin film hydration technique with three levels of cholesterol. The niosome-laden contact lenses (OFL-Nio-L) led to improved optophysical properties (swelling, transmittance, oxygen permeability) and lysozyme adherence compared to the conventional soaked contact lens (CV-OFL-L). The in vitro drug release data of CV-OFL-L showed high burst release, while OFL-Nio-L lenses showed sustained release up to 48-96 h. In a rabbit tear fluid model, the OFL-Nio-100-L lens showed a high drug concentration at all-time points compared to the CV-OFL-L and eye-drop solution. The efficacy study in the rabbit model showed improved healing effect with OFL-Nio-100-L lens compared to frequent eye-drop therapy. In conclusion, the paper demonstrated the successful application of niosomes to deliver ofloxacin using contact lens without affecting the critical lens properties to substitute eye-drop therapy.
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25
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Kośka I, Purgat K, Głowacki R, Kubalczyk P. Simultaneous Determination of Cipr ofloxacin and Ofloxacin in Animal Tissues with the Use of Capillary Electrophoresis with Transient Pseudo-Isotachophoresis. Molecules 2021; 26:molecules26226931. [PMID: 34834024 PMCID: PMC8618939 DOI: 10.3390/molecules26226931] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 11/12/2021] [Accepted: 11/15/2021] [Indexed: 01/14/2023] Open
Abstract
We have developed a precise and accurate method for the determination of ciprofloxacin and ofloxacin in meat tissues. Our method utilizes capillary electrophoresis with a transient pseudo-isotachophoresis mechanism and liquid–liquid extraction during sample preparation. For our experiment, a meat tissue sample was homogenized in pH 7.00 phosphate buffer at a ratio of 1:10 (tissue mass: buffer volume; g/mL). The extraction of each sample was carried out twice for 15 min with 600 µL of a mixture of dichloromethane and acetonitrile at a 2:1 volume ratio. We then conducted the electrophoretic separation at a voltage of 16 kV and a temperature of 25 °C using a background electrolyte of 0.1 mol/L phosphate–borate (pH 8.40). We used the UV detection at 288 nm. The experimentally determined LOQs for ciprofloxacin and ofloxacin were 0.27 ppm (0.8 nmol/g tissue) and 0.11 ppm (0.3 nmol/g tissue), respectively. The calibration curves exhibited linearity over the tested concentration range of 2 to 10 nmol/g tissue for both analytes. The relative standard deviation of the determination did not exceed 15%, and the recovery was in the range of 85–115%. We used the method to analyze various meat tissues for their ciprofloxacin and ofloxacin contents.
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Affiliation(s)
- Izabella Kośka
- Department of Environmental Chemistry, Faculty of Chemistry, University of Lodz, Pomorska 163, 90-236 Lodz, Poland; (K.P.); (R.G.)
- Doctoral School of Exact and Natural Sciences, University of Lodz, Banacha 12/16, 90-237 Lodz, Poland
- Correspondence: (I.K.); (P.K.); Tel.: +48-4263-558-44 (P.K.)
| | - Krystian Purgat
- Department of Environmental Chemistry, Faculty of Chemistry, University of Lodz, Pomorska 163, 90-236 Lodz, Poland; (K.P.); (R.G.)
| | - Rafał Głowacki
- Department of Environmental Chemistry, Faculty of Chemistry, University of Lodz, Pomorska 163, 90-236 Lodz, Poland; (K.P.); (R.G.)
| | - Paweł Kubalczyk
- Department of Environmental Chemistry, Faculty of Chemistry, University of Lodz, Pomorska 163, 90-236 Lodz, Poland; (K.P.); (R.G.)
- Correspondence: (I.K.); (P.K.); Tel.: +48-4263-558-44 (P.K.)
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26
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Parikh M, Shah M, Hirapara J, Soni S, Vaishnav B, Ghosh L. Ofloxacin Induced Hemolysis in G6PD-deficient Patient: A Rare Cause of Pigment Nephropathy. Indian J Nephrol 2021; 31:410-413. [PMID: 34584362 PMCID: PMC8443095 DOI: 10.4103/ijn.ijn_138_20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 07/23/2020] [Accepted: 08/29/2020] [Indexed: 11/04/2022] Open
Abstract
Thrombotic microangiopathy (TMA) commonly presents as a triad of acute kidney injury (AKI), jaundice, and hemolysis; however, tropical infections such as malaria, dengue, leptospira, and drugs like antimalarials can also have a similar presentation. They can cause AKI for many reasons including pre-renal causes but an important yet not relatively uncommon genetic cause of hemolytic anemia, that is, glucose 6-phosphate deficiency (G6PD) manifesting as jaundice, hemolysis, and AKI secondary to pigment nephropathy after receiving offending drugs needs to be worked up while evaluating such patients. Ofloxacin is not usually included in the lists of unsafe drugs in G6PD deficiency. Herein, we report a patient developing intravascular hemolysis secondary to G6PD deficiency associated with ofloxacin administration presenting as a rare cause for pigment nephropathy.
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Affiliation(s)
- Mital Parikh
- Consultant Nephrologist, Department of Medicine, Shree Krishna Hospital, Karamsad, India
| | - Maulin Shah
- Consultant Nephrologist, Department of Medicine, Shree Krishna Hospital, Karamsad, India
| | - Jekishan Hirapara
- Resident in Medicine, Department of Medicine, Shree Krishna Hospital, Karamsad, India
| | - Shailesh Soni
- Consultant Pathologist, Muljibhai Patel Urological Hospital, Nadiad, Gujarat, India
| | - Bhalendu Vaishnav
- Professor and Head, Muljibhai Patel Urological Hospital, Nadiad, Gujarat, India
| | - Labani Ghosh
- Assistant Professor, Department of Medicine, Shree Krishna Hospital, Karamsad, India
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27
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Jaswal A, Kaur M, Singh S, Kansal SK, Umar A, Garoufalis CS, Baskoutas S. Adsorptive removal of antibiotic ofloxacin in aqueous phase using rGO-MoS 2 heterostructure. J Hazard Mater 2021; 417:125982. [PMID: 33992005 DOI: 10.1016/j.jhazmat.2021.125982] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 04/22/2021] [Accepted: 04/24/2021] [Indexed: 06/12/2023]
Abstract
This paper reports the synthesis, characterization and detailed adsorption studies of rGO-MoS2 heterostructure. The heterostructure was explored for the adsorption of ofloxacin from the aqueous phase. Detailed studies were conducted to study the effect of crucial parameters such as pH of drug solution, adsorbent dose, temperature and initial drug concentration on the adsorption capacity. Even with a low surface area of 17.17 m2/g, the adsorbent exhibited maximum removal efficiency of 95% at a dose of 0.35 g/L and an initial drug concentration of 10 mg/L in 240 min. Thermodynamic study revealed the values for ∆H0 and ∆G0 to be - 101.15 and - 7.47 kJ/mol respectively, indicating that the process is spontaneous and exothermic in nature. The heterostructure adsorbent exhibited remarkable reusability and stability up to five cycles. The heterostructure combines excellent adsorption capabilities arising from the two-dimensional structures of rGO and MoS2 with the stronger and more specific interaction with the drug molecules which results in better performance towards the removal of the drug. The excellent performance of the heterostructure indicates that combining 2D materials can be a good strategy for producing highly efficient materials towards the adsorptive removal of pollutants.
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Affiliation(s)
- Anurag Jaswal
- Dr. S.S. Bhatnagar University Institute of Chemical Engineering and Technology, Panjab University, Chandigarh 160014, India
| | - Manjot Kaur
- Department of Chemistry and Centre of Advanced Studies, Panjab University, Chandigarh 160014, India
| | - Surinder Singh
- Dr. S.S. Bhatnagar University Institute of Chemical Engineering and Technology, Panjab University, Chandigarh 160014, India
| | - Sushil Kumar Kansal
- Dr. S.S. Bhatnagar University Institute of Chemical Engineering and Technology, Panjab University, Chandigarh 160014, India.
| | - Ahmad Umar
- Department of Chemistry, Faculty of Science and Arts, Promising Centre for Sensors and Electronic Devices (PCSED), Najran University, Najran 11001, Kingdom of Saudi Arabia.
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28
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Chen J, Liu M, Yuan H, Chen X, Zhao J. Rapid detection of sulfamethazine and ofloxacin residues in duck meat using synchronous fluorescence spectroscopy coupled with chemometric methods. Poult Sci 2021; 100:101378. [PMID: 34391174 PMCID: PMC8374452 DOI: 10.1016/j.psj.2021.101378] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 06/26/2021] [Accepted: 07/04/2021] [Indexed: 11/27/2022] Open
Abstract
Rapid detection of antibiotic residues in duck meat is of great significance for strengthening food safety and quality supervision of duck meat and fighting against inferior products in the duck meat market. The objective of the current paper was to evaluate the potential of synchronous fluorescence spectroscopy (SFS) coupled with chemometric methods for the rapid detection of sulfamethazine (SM2) and ofloxacin (OFL) residues in duck meat.The SFS spectral data from duck meat containing different concentrations of SM2 and OFL were preprocessed by baseline offset. The detection conditions, including the adding amounts of β-mercaptoethanol solution and o-phthalaldehyde solution, as well as the reaction time, were optimized by a single factor experiment for obtaining a better detection effect, and their optimal values were 400 μL , 25 μL , and 40 min, respectively. By comparing 2 chemometric models based on peak-height algorithm and peak-area algorithm, the prediction model based on peak-height algorithm was a better quantitative model with correlation coefficient for the prediction set (Rp) of 0.9031 and 0.9981, the root mean error for the prediction set (RMSEP) of 7.9509 and 0.5267 mg/kg, recovery of 81.7 to 155.1% and 96.4 to 111.2%, and relative standard deviation (RSD) of 4.1 to 6.7% and 2.9 to 6.8% to predict SM2 and OFL residues in duck meat, respectively. Overall, the results of this investigation showed that SFS technique was an effective and rapid tool for the detection of SM2 and OFL residues in duck meat.
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Affiliation(s)
- Jian Chen
- Key Laboratory of Modern Agricultural Equipment in Jiangxi Province, College of Engineering, Jiangxi Agricultural University, Nanchang 330045, China
| | - Muhua Liu
- Key Laboratory of Modern Agricultural Equipment in Jiangxi Province, College of Engineering, Jiangxi Agricultural University, Nanchang 330045, China
| | - Haichao Yuan
- Key Laboratory of Modern Agricultural Equipment in Jiangxi Province, College of Engineering, Jiangxi Agricultural University, Nanchang 330045, China
| | - Xiongfei Chen
- Key Laboratory of Modern Agricultural Equipment in Jiangxi Province, College of Engineering, Jiangxi Agricultural University, Nanchang 330045, China
| | - Jinhui Zhao
- Key Laboratory of Modern Agricultural Equipment in Jiangxi Province, College of Engineering, Jiangxi Agricultural University, Nanchang 330045, China.
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Xu S, Yang J, Hussein R, Liu G, Su B. Heterogeneous ozonation of ofloxacin using MnO x -CeO x /γ-Al 2 O 3 as a catalyst: Performances, degradation kinetics and possible degradation pathways. Water Environ Res 2021; 93:1361-1369. [PMID: 33524187 DOI: 10.1002/wer.1524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 01/05/2021] [Accepted: 01/19/2021] [Indexed: 06/12/2023]
Abstract
In this study, the performance of ofloxacin (OFX) degradation in synthetic wastewater using synthesized MnOx -CeOx /γ-Al2 O3 as a heterogeneous ozonation catalyst was evaluated. The removal rates of OFX and chemical oxygen demand (COD) during 15-day continuous-flow experiments were 98.2% and 76.7% on average, respectively. An ozone index (mgCOD/mgO3 ) of 1.09 with a high ozone utilization efficiency of 91.39% was achieved. The pseudo-first-order rate constant of ofloxacin degradation reached 15.216 × 10-2 min-1 , which was five times that (3.085 × 10-2 min-1 ) without catalysts. The results of gas chromatography-mass spectrometry (GC-MS) demonstrated that a variety of small-molecule organics occurred in the final oxidation products, such as 4-hydroxyl-4-methyl-2-pentanone and 2-oxoadipic acid in addition to homologs of OFX. The results of this study suggested that hydroxyl radicals played critical roles in the degradation and mineralization of OFX via four main pathways: (a) electrophilic addition of nitrogen; (b) breakdown of carbon-carbon double bonds; (c) hydrolysis of ether rings; and (d) halodecarboxylation of carboxyl groups. The biodegradability (BOD5 /COD) of OFX after catalytic ozonation reached 0.54. PRACTITIONER POINTS: Ofloxacin wastewater was treated using catalytic ozonation in a 15-day continuous experiment with MnOx -CeOx /γ-Al2 O3 as a catalyst. The ozone index reached 1.09 mgCOD/mgO3 during ozonation of ofloxacin. The presence of the catalyst increased the reaction rate constant by a factor of five. 4-hydroxy-4-methyl-2-pentanone was the primary ofloxacin oxidation product.
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Affiliation(s)
- Shengkai Xu
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, China
| | - Jiaxin Yang
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, China
| | - Rafaat Hussein
- College of Environment Science and Forest, State University of New York, Syracuse, NY, USA
| | - Guangqing Liu
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, China
| | - Bensheng Su
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, China
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30
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Abstract
The present study reports the generation of 2-hydroxyethyl starch microparticles for co-delivery and controlled release of multiple agents. The obtained microparticles are characterized by using Fourier transform infrared spectroscopy, differential scanning calorimetry, X-ray diffraction analysis, energy-dispersive X-ray spectroscopy, and scanning electron microscopy. By using ofloxacin and ketoprofen as drug models, the release sustainability of the microparticles is examined at pH 1.2, 5.4, and 6.8 at 37 °C, with Fickian diffusion being found to be the major mechanism controlling the kinetics of drug release. Upon being loaded with the drug models, the microparticles show high efficiency in acting against Escherichia coli and Bacillus cereus. The results suggest that our reported microparticles warrant further development for applications in which co-administration of multiple bioactive agents is required.
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Affiliation(s)
| | - Wing-Fu Lai
- Shenzhen Key Laboratory of Steroid Drug Discovery and Development, School of Life and Health Sciences, The Chinese University of Hong Kong (Shenzhen), Shenzhen, China.,Ciechanover Institute of Precision and Regenerative Medicine, The Chinese University of Hong Kong (Shenzhen), Shenzhen, China.,School of Education, University of Bristol, Bristol, UK
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31
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Koçak E, Özkul C. Comparative Proteomic Analysis of Escherichia coli Under Ofloxacin Stress. Turk J Pharm Sci 2021; 18:133-139. [PMID: 33900678 DOI: 10.4274/tjps.galenos.2020.47704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Objectives In the present study, proteomics was utilized to evaluate changes in Escherichia coli proteins in response to ofloxacin to understand the mechanism of action of ofloxacin and the mechanisms of ofloxacin resistance in E. coli. Materials and Methods Proteomics analysis of E. coli was performed by using liquid chromatography quadrupole time-of-flight mass spectrometry followed by a data processing step using MaxQuant. Functional classification and pathway analysis showed a systematic effect of ofloxacin over E. coli proteome structure. Results In total, 649 common proteins were identified in the untreated and ofloxacin-treated groups, while 98 proteins were significantly different in the ofloxacin-treated group. Functional classification and pathway analysis showed that ofloxacin has a systematic effect over ribosomal processes, energy pathways (tricarboxylic acid cycle and glycolysis), membrane proteins, microbial targets, and biofilm formation. Conclusion The results showed that ofloxacin affected many cellular processes and pathways. In addition, proteomic analysis revealed that E. coli develops resistance mechanism with different biological processes.
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Affiliation(s)
- Engin Koçak
- Hacettepe University Faculty of Pharmacy, Department of Analytical Chemistry, Ankara, Turkey
| | - Ceren Özkul
- Hacettepe University Faculty of Pharmacy, Department of Pharmaceutical Microbiology, Ankara, Turkey
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Praus P, Smýkalová A, Foniok K. Comparison of Graphitic Carbon Nitrides Synthetized from Melamine and Melamine-Cyanurate Complex: Characterization and Photocatalytic Decomposition of Ofloxacin and Ampicillin. Materials (Basel) 2021; 14:1967. [PMID: 33919916 DOI: 10.3390/ma14081967] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 04/07/2021] [Accepted: 04/12/2021] [Indexed: 12/02/2022]
Abstract
Graphitic carbon nitride (g-C3N4, hereafter abbreviated as CN) was prepared by the heating of melamine (CN-M) and melamine-cyanurate complex (CN-MCA), respectively, in air at 550 °C for 4 h. The specific surface area (SSA) of CN-M and CN-MCA was 12 m2 g−1 and 225 m2g−1 and the content of oxygen was 0.62 wt.% and 1.88 wt.%, respectively. The band gap energy (Eg) of CN-M was 2.64 eV and Eg of CN-MCA was 2.73 eV. The photocatalytic activity of the CN materials was tested by means of the decomposition of antibiotics ofloxacin and ampicillin under LED irradiation of 420 nm. The activity of CN-MCA was higher due to its high SSA, which was determined based on the physisorption of nitrogen. Ofloxacin was decomposed more efficiently than ampicillin in the presence of both photocatalysts.
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Mojiri A, Baharlooeian M, Zahed MA. The Potential of Chaetoceros muelleri in Bioremediation of Antibiotics: Performance and Optimization. Int J Environ Res Public Health 2021; 18:ijerph18030977. [PMID: 33499398 PMCID: PMC7908223 DOI: 10.3390/ijerph18030977] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Revised: 01/19/2021] [Accepted: 01/19/2021] [Indexed: 12/03/2022]
Abstract
Antibiotics are frequently applied to treat bacterial infections in humans and animals. However, most consumed antibiotics are excreted into wastewater as metabolites or in their original form. Therefore, removal of antibiotics from aquatic environments is of high research interest. In this study, we investigated the removal of sulfamethoxazole (SMX) and ofloxacin (OFX) with Chaetoceros muelleri, a marine diatom. The optimization process was conducted using response surface methodology (RSM) with two independent parameters, i.e., the initial concentration of antibiotics and contact time. The optimum removal of SMX and OFX were 39.8% (0.19 mg L−1) and 42.5% (0.21 mg L−1) at the initial concentration (0.5 mg L−1) and contact time (6.3 days). Apart from that, the toxicity effect of antibiotics on the diatom was monitored in different SMX and OFX concentrations (0 to 50 mg L−1). The protein (mg L−1) and carotenoid (μg L−1) content increased when the antibiotic concentration increased up to 20 mg L−1, while cell viability was not significantly affected up to 20 mg L−1 of antibiotic concentration. Protein content, carotenoid, and cell viability decreased during high antibiotic concentrations (more than 20 to 30 mg L−1). This study revealed that the use of Chaetoceros muelleri is an appealing solution to remove certain antibiotics from wastewater.
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Affiliation(s)
- Amin Mojiri
- Department of Civil and Environmental Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University, Higashihiroshima 739-8527, Japan
- Correspondence:
| | - Maedeh Baharlooeian
- Department of Marine Biology, Faculty of Marine Science and Oceanography, Khorramshahr University of Marine Science and Technology, Khorramshahr 64199-34619, Iran;
| | - Mohammad Ali Zahed
- Faculty of Biological Sciences, Kharazmi University, Tehran 15719-14911, Iran;
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Ben Aissa S, Mastouri M, Catanante G, Raouafi N, Marty JL. Investigation of a Truncated Aptamer for Ofloxacin Detection Using a Rapid FRET-Based Apta-Assay. Antibiotics (Basel) 2020; 9:E860. [PMID: 33287135 DOI: 10.3390/antibiotics9120860] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Revised: 11/24/2020] [Accepted: 12/01/2020] [Indexed: 11/17/2022] Open
Abstract
In this work, we describe the use of a new truncated aptamer for the determination of ofloxacin (OFL), being a principal quinolone commonly used in both human and animal healthcare. Since the affinity of a 72-mer ssDNA sequence has been previously described without further investigations, this paper demonstrates the first computational prediction of the binding motif between this aptamer and OFL through in silico molecular docking studies. Besides, we suggest the application of the characterized recognition mechanism in a simple FRET (Förster Resonance Energy Transfer) pattern for the rapid aptasensing of the quinolone of interest. Accordingly, our approach harnesses the fluorescence quenching of the fluorescein-tagged aptamer (FAM-APT) induced by its partial hybridization to a tetramethyl rhodamine-labelled complementary ssDNA (TAMRA-cDNA). In such a structure, dye labels brought into close proximity act as a FRET pair. Upon ofloxacin addition, an affinity competition occurs to form a more stable FAM-APT/OFL complex, thus unquenching the FAM-APT signal. Interestingly, the recovered fluorescence intensity was found to correlate well with the antibiotic's concentrations in the range of 0.2-200 μM in HEPES buffer, with a linear response that ranged between 0.2 and 20 μM. The rapid apta-assay achieved limits of detection and quantification of 0.12 and 0.40 μM, respectively. The truncated aptamer has also shown an improved specificity toward OFL than other quinolones, compared to the original full-length aptamer described in previous works. Finally, the practical application of the developed apta-assay was successfully confirmed to detect OFL quinolone in spiked milk samples, with satisfactory recoveries ranging between 97.4% and 111.4%.
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Li G, Guo Q, Liu H, Wan L, Jiang Y, Li M, Zhao LL, Zhao X, Liu Z, Wan K. Detection of Resistance to Fluoroquinolones and Second-Line Injectable Drugs Among Mycobacterium tuberculosis by a Reverse Dot Blot Hybridization Assay. Infect Drug Resist 2020; 13:4091-4104. [PMID: 33204126 PMCID: PMC7666996 DOI: 10.2147/idr.s270209] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 10/07/2020] [Indexed: 01/23/2023] Open
Abstract
Background Reliable and timely determination of second-line drug resistance is essential for early initiation effective anti-tubercular treatment among multi-drug resistant (MDR) patients and blocking the spread of MDR and extensively drug-resistant tuberculosis. Molecular methods have the potency to provide accurate and rapid drug susceptibility results. We aimed to establish and evaluate the accuracy of a reverse dot blot hybridization (RDBH) assay to simultaneously detect the resistance of fluoroquinolones (FQs), kanamycin (KN), amikacin (AMK), capreomycin (CPM) and second-line injectable drugs (SLIDs) in Mycobacterium tuberculosis. Methods We established and evaluated the accuracy of the RDBH assay by comparing to the phenotypic drug susceptibility testing (DST) and sequencing in 170 M. tuberculosis, of which 94 and 27 were respectively resistant to ofloxacin (OFX) and SLIDs. Results The results show that, compared to phenotypic DST, the sensitivity and specificity of the RDBH assay for resistance detection were 63.8% and 100.0% for OFX, 60.0% and 100.0% for KN, 61.5% and 98.1% for AMK, 50.0% and 99.3% for CPM, and 55.6% and 100% for SLIDs, respectively; compared to sequencing, the sensitivity and specificity of the RDBH assay were 95.2% and 100.0% for OFX, 93.8% and 100.0% for SLIDs or KN (both based on mutations in rrs 1400 region and eis promoter), and 91.6% and 100.0% for AMK or CPM (both based on mutations in rrs 1400 region), respectively. The turnaround time of the RDBH assay was 7 h for testing 42 samples. Conclusion Our data suggested that compared to sequencing, the RDBH assay could serve as a rapid and reliable method for testing the resistance of M. tuberculosis against OFX and SLIDs, enabling early administration of appropriate treatment regimens among MDR tuberculosis patients.
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Affiliation(s)
- Guilian Li
- State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, People's Republic of China
| | - Qian Guo
- State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, People's Republic of China.,Department of Molecular Biology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, People's Republic of China
| | - Haican Liu
- State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, People's Republic of China
| | - Li Wan
- State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, People's Republic of China
| | - Yi Jiang
- State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, People's Republic of China
| | - Machao Li
- State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, People's Republic of China
| | - Li-Li Zhao
- State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, People's Republic of China
| | - Xiuqin Zhao
- State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, People's Republic of China
| | - Zhiguang Liu
- State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, People's Republic of China
| | - Kanglin Wan
- State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, People's Republic of China
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Pathak S, Parkar H, Tripathi S, Kale A. Ofloxacin as a Disruptor of Actin Aggresome "Hirano Bodies": A Potential Repurposed Drug for the Treatment of Neurodegenerative Diseases. Front Aging Neurosci 2020; 12:591579. [PMID: 33132905 PMCID: PMC7573105 DOI: 10.3389/fnagi.2020.591579] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Accepted: 09/09/2020] [Indexed: 01/27/2023] Open
Abstract
There is a growing number of aging populations that are more prone to the prevalence of neuropathological disorders. Two major diseases that show a late onset of the symptoms include Alzheimer’s disorder (AD) and Parkinson’s disorder (PD), which are causing an unexpected social and economic impact on the families. A large number of researches in the last decade have focused upon the role of amyloid precursor protein, Aβ-plaque, and intraneuronal neurofibrillary tangles (tau-proteins). However, there is very few understanding of actin-associated paracrystalline structures formed in the hippocampus region of the brain and are called Hirano bodies. These actin-rich inclusion bodies are known to modulate the synaptic plasticity and employ conspicuous effects on long-term potentiation and paired-pulse paradigms. Since the currently known drugs have very little effect in controlling the progression of these diseases, there is a need to develop therapeutic agents, which can have improved efficacy and bioavailability, and can transport across the blood–brain barrier. Moreover, finding novel targets involving compound screening is both laborious and is an expensive process in itself followed by equally tedious Food and Drug Administration (FDA) approval exercise. Finding alternative functions to the already existing FDA-approved molecules for reversing the progression of age-related proteinopathies is of utmost importance. In the current study, we decipher the role of a broad-spectrum general antibiotic (Ofloxacin) on actin polymerization dynamics using various biophysical techniques like right-angle light scattering, dynamic light scattering, circular dichroism spectrometry, isothermal titration calorimetry, scanning electron microscopy, etc. We have also performed in silico docking studies to deduce a plausible mechanism of the drug binding to the actin. We report that actin gets disrupted upon binding to Ofloxacin in a concentration-dependent manner. We have inferred that Ofloxacin, when attached to a drug delivery system, can act as a good candidate for the treatment of neuropathological diseases.
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Affiliation(s)
- Samridhi Pathak
- School of Chemical Sciences, University of Mumbai - Department of Atomic Energy Center for Excellence in Basic Sciences, University of Mumbai, Vidyanagari Campus, Mumbai, India
| | - Haifa Parkar
- School of Chemical Sciences, University of Mumbai - Department of Atomic Energy Center for Excellence in Basic Sciences, University of Mumbai, Vidyanagari Campus, Mumbai, India
| | - Sarita Tripathi
- School of Chemical Sciences, University of Mumbai - Department of Atomic Energy Center for Excellence in Basic Sciences, University of Mumbai, Vidyanagari Campus, Mumbai, India
| | - Avinash Kale
- School of Chemical Sciences, University of Mumbai - Department of Atomic Energy Center for Excellence in Basic Sciences, University of Mumbai, Vidyanagari Campus, Mumbai, India
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Essam HM, Saad MN, Elzanfaly ES, Amer SM. Stepwise optimization and sensitivity improvement of green micellar electrokinetic chromatography method to simultaneously determine some fluoroquinolones and glucocorticoids present in various binary ophthalmic formulations. Biomed Chromatogr 2020; 34:e4941. [PMID: 32627197 DOI: 10.1002/bmc.4941] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 06/26/2020] [Accepted: 07/01/2020] [Indexed: 01/31/2023]
Abstract
A sensitive micellar electrokinetic chromatography method is presented to simultaneously quantify ofloxacin, gatifloxacin, dexamethasone sodium phosphate and prednisolone acetate. The method has the advantages of being rapid, accurate, reproducible, ecologically acceptable and sensitive. The electrophoretic separation utilized 20 mm borate buffer as background electrolyte with pH 10.0 ± 0.1 and 50 mm sodium dodecyl sulfate as a micelle forming molecule. A capillary tube (50 μm i.d., 33 cm) of fused silica was used and on-column diode array detection at 243 nm for dexamethasone sodium phosphate and prednisolone acetate, and 290 nm for ofloxacin and gatifloxacin. Various factors were optimized such as the background electrolyte (type, concentration and pH), addition of sodium dodecyl sulfate and its concentration, detection wavelength, applied voltage and injection parameters. The studied drugs were efficiently separated in 6.2 min, at 20 kV with high resolution. The greenness of the method was estimated using an eco-scale tool and the presented method was found to have excellent green characteristics. The method was validated in conformance with International Conference on Harmonization guidelines, with acceptable accuracy, precision and selectivity. The suggested method can be employed for the economic analysis of the four drugs in dissimilar binary combinations of eye drops saving solvents and chemicals.
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Affiliation(s)
- Hebatallah M Essam
- Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Martin N Saad
- Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Eman S Elzanfaly
- Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Sawsan M Amer
- Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, Cairo, Egypt
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Bush N, Sharma V, Chandrahasan K, Patil AN. Ofloxacin-ornidazole fixed-dose combination medication-induced pancreatitis with positive rechallenge. J Family Med Prim Care 2020; 9:3157-3159. [PMID: 32984191 PMCID: PMC7491762 DOI: 10.4103/jfmpc.jfmpc_531_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 04/26/2020] [Accepted: 05/08/2020] [Indexed: 12/15/2022] Open
Abstract
Although ofloxacin-ornidazole fixed-dose combination (FDC) is a rampantly used antibiotic combination for mixed-infection diarrhea in India, the adverse drug reaction (ADR) associated with these FDCs remains underreported. Herein, the authors present a case report of a definitive ofloxacin-ornidazole FDC-induced pancreatitis. The nonalcoholic adult male patient showed a sharp piercing epigastric pain flowing to the back, gradually rising in severity, which started after taking ofloxacin-ornidazole FDC tablet over the counter. Serum lipase concentration measured in the emergency room was 635 units per liter (normal range- 13–60 units/L) and serum amylase was 377 units/L (normal range- 30–110 units/L). Ultrasonography and an axial computed tomography of the abdomen confirmed the diagnosis of acute pancreatitis. Ofloxacin-ornidazole FDC tablet was stopped immediately. Past treatment records confirmed accidental rechallenge. In conclusion, this is a first case report of ofloxacin-ornidazole FDC-induced pancreatitis.
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Affiliation(s)
- Nikhil Bush
- Department of Gastroenterology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Vishal Sharma
- Department of Gastroenterology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - K Chandrahasan
- Department of Pharmacology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Amol N Patil
- Department of Pharmacology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
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Dai S, Li P, Peng WQ, Liu YX, Wang Z, He YL, Shen GX, Hu SQ. [Influence of Antibiotics on the Denitrification Process of Antibiotic Resistant Denitrifying Bacteria and the Analysis of Microbial Community Structure]. Huan Jing Ke Xue 2020; 41:1401-1408. [PMID: 32608642 DOI: 10.13227/j.hjkx.201909175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The removal rate of some antibiotics in urban sewage by conventional treatment is low, which leads to an increase in antibiotic resistant bacteria in natural water environments. To reduce the ecological harm of antibiotics to the water in towns, a risk control technique for degradation of microantibiotics by the co-metabolism of antibiotic resistant denitrifying bacteria was proposed. Using sodium acetate as an electron donor and maintaining the concentration of ofloxacin (OFLX) at 1 μg·g-1, gradually increasing the dominant growth of antibiotic degradation bacteria, denitrifying bacteria (DnB1), trace antibiotics and sodium acetate, and denitrifying bacteria (DnB2) with the presence of sodium acetate and nitrogen elements were cultured. The degradation effect of antibiotics through denitrification and the effects of antibiotics on denitrification of resistant denitrifying bacteria and the changes to the microbial community were investigated. The results showed that DnB2 had a significant degradation effect on OFLX compared to DnB1. The degradation to OFLX by DnB1 and DnB2 was 0.31 μg·g-1 and 16.14 μg·g-1, respectively. Increased OFLX concentration inhibited DnB1 denitrification activity in the short term. The denitrification process of DnB2 was less affected by OFLX. At the same time, high-throughput sequencing using the Illumina MiSeq platform was used. Based on the operational taxonomic unit information formed by the clustering of sequencing results, the diversity of each sample was compared and analyzed. The research results show that the relative abundance and diversity of the microbial community of DnB1 are higher than those of DnB2.
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Affiliation(s)
- Sha Dai
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China.,School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Peng Li
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Wu-Qing Peng
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.,School of Environmental Science and Engineering, Anhui Normal University, Wuhu 241000, China
| | - Yu-Xue Liu
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China.,School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Zheng Wang
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
| | - Yi-Liang He
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Gen-Xiang Shen
- Shanghai Academy of Environmental Sciences, Shanghai 200233, China
| | - Shuang-Qing Hu
- Shanghai Academy of Environmental Sciences, Shanghai 200233, China
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Deo N, Sharma D, Bisht D, Venkatesan K. Evaluation of the intracellular accumulation of fluoroquinolones in mycobacteria by fluorometric assays. Int J Mycobacteriol 2020; 9:34-38. [PMID: 32474486 DOI: 10.4103/ijmy.ijmy_194_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Background Fluoroquinolones (FQs) are being used as second-line agents in the treatment of tuberculosis caused by multidrug-resistant strains. Ofloxacin (OFX) is being tried as a part of modified multidrug therapy regimens for leprosy. A preliminary study was carried out to evaluate the accumulation of FQs - OFX, levofloxacin (LFX), norfloxacin (NFX), and ciprofloxacin (CIF) in Mycobacterium smegmatis. Methods M. smegmatis were grown in Sauton's medium till log phase, harvested and resuspended in phosphate buffer (0.1 M, pH 7.2, Optical Density (OD) of 0.4-0.5) The suspensions were incubated with OFX, LFX, NFX, and CIF (10 μg/ml) at 37°C. The drugs were estimated in the supernatants using spectrofluorimeteric methods. The experiments were also conducted with the addition of carbonyl cyanide m-chlorophenyl hydrazone (CCCP), a proton motive force inhibitor, at 100 μM, 10 min before and/or immediately after the addition of the drugs. Results The time taken to achieve a Steady State Concentration (SSC) of OFX in M. smegmatis was 3 min and the level of accumulation was 102 ng/mg dry weight of the bacilli; with LFX the time for SSC was 5 min and the level of accumulation was 90 ng/mg; in case of NFX the accumulation to SSC was 87 ng/mg in 3 min. CIF accumulation attained a steady state (SSC level of 79 ng/mg) in 4 min. The accumulation kinetics for NFX in M. smegmatis using the spectrofluorimetric method is comparable with radioactive assays. Dose-related accumulation was observed with 10 μg/ml exposure concentrations. The addition of CCCP failed to influence the accumulation of each of these quinolones. Conclusion The findings of dose-related accumulation of OFX, LFX NFX, and CIF suggest simple diffusion as the possible mechanism of transport of these drugs.
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Affiliation(s)
- Nirmala Deo
- Department of Biochemistry, National JALMA Institute for Leprosy and Other Mycobacterial Diseases, Agra, Uttar Pradesh, India
| | - Divakar Sharma
- Department of Biochemistry, National JALMA Institute for Leprosy and Other Mycobacterial Diseases, Agra, Uttar Pradesh, India
| | - Deepa Bisht
- Department of Biochemistry, National JALMA Institute for Leprosy and Other Mycobacterial Diseases, Agra, Uttar Pradesh, India
| | - Krishnamurthy Venkatesan
- Department of Biochemistry, National JALMA Institute for Leprosy and Other Mycobacterial Diseases, Agra, Uttar Pradesh, India
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Songkiatisak P, Ding F, Cherukuri PK, Xu XHN. Size-Dependent Inhibitory Effects of Antibiotic Nanocarriers on Filamentation of E. coli. Nanoscale Adv 2020; 2:2135-2145. [PMID: 33791510 PMCID: PMC8009294 DOI: 10.1039/c9na00697d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Accepted: 03/30/2020] [Indexed: 06/12/2023]
Abstract
Multidrug membrane transporters exist in both prokaryotic and eukaryotic cells, which causes multidrug resistance (MDR) and urgent need of new and more effective therapeutic agencies. In this study, we used three different sized antibiotic nanocarriers to study their mode of actions and their size-dependent inhibitory effects against Escherichia coli (E. coli). The antibiotic nanocarriers (AgMUNH-Oflx NPs) with 8.6×102, 9.4×103 and 6.5×105 Oflx molecules per nanoparticle (NP) were prepared by functionalizing the Ag NPs (2.4 ± 0.7, 13.0 ± 3.1 and 92.6 ± 4.4 nm) with a monolayer of 11-amino-1-undecanethiol (MUNH2) and covalently linking ofloxacin (Oflx) with the amine group of AgMUNH2 NPs, respectively. We designed a modified cell culture medium for nanocarriers to be stable (non-aggregated) over 18 h of cell culture, which enables us to quantitatively study their size and dose dependent inhibitory effects against E. coli. We found that inhibitory effects of Oflx against E. coli highly depend upon dose of Oflx and size of nanocarriers, showing that the equal amount of Oflx delivered by the largest nanocarriers (92.6 ± 4.4 nm) were the most potent with the lowest minimum inhibitory concentration (MIC50) and created the longest and highest percentage of filamentous cells, while the smallest nanocarriers (2.4 ± 0.7) were the least potent with the highest MIC50 and produced the shortest and lowest percentage of filamentous cells. Interestingly, the same amount of Oflx on 2.4 ± 0.7 nm nanocarriers showed the 2x higher MIC and created the 2x shorter filamentous cells than free Oflx, while the Oflx on 13.0 ± 3.1 and 92.6 ± 4.4 nm nanocarriers exhibited 2x and 6x lower MICs, and produced 2x and 3x longer filamentous cell than free Oflx, respectively. Notably, three sized AgMUNH2 NPs (absence of Oflx) showed negligible inhibitory effects and did not create filamentous cells. The results show that the filamentation of E. coli highly depends upon the sizes of nanocarriers, which leads to the size-dependent inhibitory effects of nanocarriers against E. coli.
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Affiliation(s)
- Preeyaporn Songkiatisak
- Department of Chemistry and Biochemistry, Old Dominion UniversityNorfolkVirginia 23529USAhttp://www.odu.edu/∼xhxu+1 (757) 683 5698+1 (757) 683 5698
| | - Feng Ding
- Department of Chemistry and Biochemistry, Old Dominion UniversityNorfolkVirginia 23529USAhttp://www.odu.edu/∼xhxu+1 (757) 683 5698+1 (757) 683 5698
| | - Pavan Kumar Cherukuri
- Department of Chemistry and Biochemistry, Old Dominion UniversityNorfolkVirginia 23529USAhttp://www.odu.edu/∼xhxu+1 (757) 683 5698+1 (757) 683 5698
| | - Xiao-Hong Nancy Xu
- Department of Chemistry and Biochemistry, Old Dominion UniversityNorfolkVirginia 23529USAhttp://www.odu.edu/∼xhxu+1 (757) 683 5698+1 (757) 683 5698
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Drugs for common eye disorders. Med Lett Drugs Ther 2019; 61:187-94. [PMID: 31770361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
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Advice for travelers. Med Lett Drugs Ther 2019; 61:153-60. [PMID: 31599872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
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Expanded table: antibiotics for treatment of travelers' diarrhea. Med Lett Drugs Ther 2019; 61:e160. [PMID: 31599873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
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Sitaula S, Singh SK. Corneal deposition of fluoroquinolones after penetrating keratoplasty: case series. Int Med Case Rep J 2019; 12:151-154. [PMID: 31191042 PMCID: PMC6512573 DOI: 10.2147/imcrj.s198011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Accepted: 02/20/2019] [Indexed: 11/23/2022] Open
Abstract
Purpose: To report three cases of fluroquinolone deposition in the cornea after topical administration post-penetrating keratoplasty. Case reports: Herein we report three patients ranging in age from 42-65 years who underwent keratoplasty with cataract extraction, with intraocular lens implantation in the first two cases and left aphakic due to a posterior capsular tear in the third case. The first two patients received ciprofloxacin-dexamethasone combination drops, and developed drug deposition, which was observed at the first follow-up after 7 and 10 days respectively. The third patient received prednisolone acetate and ofloxacin eyedrops postoperatively, and developed drug deposits in the cornea after 20 days. In all of the three patients, the fluroquinolone group of drugs was discontinued and the cornea cleared gradually over the next 3-4 weeks. Although the cornea cleared, the first two grafts failed due to recurrent viral infection in one case, and graft rejection in the other case. Conclusion: Deposition of many different fluroquinolones in the cornea has been reported after a variety of surgeries, including penetrating keratoplasty. Drug deposition post-penetrating keratoplasty may seem innocuous due to self-resolution on cessation of the drugs, but it may have deleterious effects on graft survival. Hence, fluroquinolones, especially ciprofloxacin, should be cautiously used in patients undergoing penetrating keratoplasty if frequent dosing is prescribed or if used concurrently with other topical medications containing preservatives.
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Affiliation(s)
- Sanjeeta Sitaula
- B.P. Koirala Lions Centre for Ophthalmic Studies, Institute Of Medicine, Kathmandu, Nepal
| | - Sanjay K Singh
- Department of Cornea Clinic, Biratnagar Eye Hospital, Biratnagar, Nepal
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Eid HM, Elkomy MH, El Menshawe SF, Salem HF. Development, Optimization, and In Vitro/In Vivo Characterization of Enhanced Lipid Nanoparticles for Ocular Delivery of Ofloxacin: the Influence of Pegylation and Chitosan Coating. AAPS PharmSciTech 2019; 20:183. [PMID: 31054011 DOI: 10.1208/s12249-019-1371-6] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Accepted: 03/20/2019] [Indexed: 01/08/2023] Open
Abstract
This study aims to investigate whether modification of solid lipid nanoparticles (SLNs) with chitosan (CTS) and polyethylene glycol (PEG) coatings enhances corneal retention time and transcorneal bioavailability. Ofloxacin (OFLOX) was selected as the model drug because of its potential benefits for the treatment of local eye infections. The OFLOX-CTS-PEG-SLN was prepared by a modified emulsion/solvent evaporation technique. A central composite design was implemented to investigate the influence of total lipid/drug ratio, surfactant concentration, PEG stearate concentration in the lipid mixture, and CTS concentration on size, entrapment, transcorneal permeation, and adhesion to the corneal mucosal membrane. The optimized OFLOX-CTS-PEG-SLN was characterized for OFLOX cumulative percentage released in simulated tear fluid and permeated across the excised bovine corneal membrane. Moreover, nanoparticle morphology, eye irritation via histopathological analysis, and OFLOX concentration in the ocular fluids and tissues were determined. A total lipid/drug ratio of 19:1, Tween 80 of 2%, PEG stearate concentration in the lipid mixture (% w/w) of 2.6%, and CTS concentration (% w/v) of 0.23% produced 132.9 nm particles entrapping 74.8% of the total drug added. The particles detached from the corneal membrane at a force of 3700 dyne/cm2. The %OFLOX released from the optimized nanoparticles was 63.3, and 66% of the drug permeated after 24 h. Compared to Oflox® drops, the optimized OFLOX-CTS-PEG-SLN exhibited similar tolerability but two- to threefold higher concentrations in the eyes of rabbits. Coating of SLN with chitosan and PEG augments the ocular bioavailability of OFLOX by increasing transcorneal permeation and enhancing mucoadhesion strength.
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Rifamycin (Aemcolo) for treatment of travelers' diarrhea. Med Lett Drugs Ther 2019; 61:39-40. [PMID: 30845098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
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Polachek H, Debotton N, Feinshtein V, Rubin M, Ben-Zvi Z, Holcberg G, Agbaria R, Dahan A. The role of various transporters in the placental uptake of ofloxacin in an in vitro model of human villous trophoblasts. Drug Des Devel Ther 2018; 12:4129-4138. [PMID: 30584277 PMCID: PMC6284538 DOI: 10.2147/dddt.s181493] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Introduction Six years after the US Food and Drug Administration approval of the broad-spectrum antibiotic ofloxacin (OFLX), the chiral switching of this racemic mixture resulted in a drug composed of the L-optical isomer levofloxacin (LVFX). Since both fluoroquinolones (FQs) were introduced to the pharmaceutical market, they have been widely prescribed by physicians, with careful administration during pregnancy and breastfeeding. Therefore, the role of the influx and efflux placental transporters in the concentrations of these drugs that permeate through human placental barrier model was investigated in this study. Methods The contribution of major carriers on the transplacental flux of OFLX and LVFX uptake into choriocarcinoma BeWo cells was evaluated in the presence vs absence of well-known inhibitors. Results Our results reveal that neither the influx transporters such as organic cation transporters, organic anion transporters, and monocarboxylate transporters nor the efflux transporters such as P-glycoprotein or breast cancer resistance protein significantly affected the transport of OFLX. In contrast, multiple transporters revealed pronounced involvement in the transfer of the levorotatory enantiomer in and out of the in vitro placental barrier. These data suggest a non-carrier-mediated mechanism of transport of the racemic mixture, while LVFX is subjected to major influx and efflux passage through the placental brush border membranes. Conclusion This study provides underlying insights to elucidate the governing factors that influence the flux of these FQs through organ barriers, in view of the controversial safety profile of these drugs in pregnant population.
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Affiliation(s)
- Hana Polachek
- Department of Clinical Pharmacology, School of Pharmacy, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel,
| | - Nir Debotton
- Department of Chemical Engineering, Shenkar College of Engineering and Design, Ramat-Gan, Israel
| | - Valeria Feinshtein
- Department of Clinical Pharmacology, School of Pharmacy, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel,
| | - Mazal Rubin
- Department of Clinical Pharmacology, School of Pharmacy, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel,
| | - Zvi Ben-Zvi
- Department of Clinical Pharmacology, School of Pharmacy, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel,
| | - Gershon Holcberg
- Division of Obstetrics and Gynecology, Soroka University Medical Center, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Riad Agbaria
- Department of Clinical Pharmacology, School of Pharmacy, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel,
| | - Arik Dahan
- Department of Clinical Pharmacology, School of Pharmacy, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel,
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Nuti S, Fernández-Lodeiro J, Del Secco B, Rampazzo E, Rodríguez-González B, Capelo JL, Silva V, Igrejas G, Poeta P, Torres C, Zaccheroni N, Prodi L, Oliveira E, Lodeiro C. Engineered Nanostructured Materials for Ofloxacin Delivery. Front Chem 2018; 6:554. [PMID: 30538980 PMCID: PMC6277636 DOI: 10.3389/fchem.2018.00554] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Accepted: 10/29/2018] [Indexed: 12/03/2022] Open
Abstract
Antibiotic resistance is emerging as a growing worldwide problem and finding solutions to this issue is becoming a new challenge for scientists. As the development of new drugs slowed down, advances in nanotechnology offer great opportunities, with the possibility of designing new systems for carrying, delivery and administration of drugs already in use. Engineered combinations of the synthetic, broad-spectrum antibiotic ofloxacin, rarely studied in this field, with different types of silver, mesoporous silica-based and Pluronic/silica-based nanoparticles have been explored. The nanocarriers as silver core@silica mesoporous (AgMSNPs) and dye-doped silica nanoparticles functionalized with ofloxacin were synthesized and their antibacterial properties studied against S. aureus and E. coli. The best antibacterial results were obtained for the AgMSNPs nanosystem@ofloxacin for the strain S. aureus ATCC 25923, with MIC and MBC values of 5 and 25 μg/mL, proving the efficacy and synergetic effect of the antibiotic and the Ag core of the nanoparticles.
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Affiliation(s)
- Silvia Nuti
- BIOSCOPE Group, LAQV@REQUIMTE, Chemistry Department, Faculty of Science and Technology, NOVA University of Lisbon, Almada, Portugal
- G. Ciamician Department of Chemistry, University of Bologna, Bologna, Italy
| | - Javier Fernández-Lodeiro
- BIOSCOPE Group, LAQV@REQUIMTE, Chemistry Department, Faculty of Science and Technology, NOVA University of Lisbon, Almada, Portugal
- Proteomass Scientific Society, Costa de Caparica, Portugal
| | | | - Enrico Rampazzo
- G. Ciamician Department of Chemistry, University of Bologna, Bologna, Italy
| | | | - José L. Capelo
- BIOSCOPE Group, LAQV@REQUIMTE, Chemistry Department, Faculty of Science and Technology, NOVA University of Lisbon, Almada, Portugal
- Proteomass Scientific Society, Costa de Caparica, Portugal
| | - Vanessa Silva
- Department of Genetics and Biotechnology, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
- Functional Genomics and Proteomics Unit, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
- Veterinary Science Department, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
- LAQV-REQUIMTE, Faculty of Science and Technology, Nova University of Lisbon, Lisbon, Portugal
| | - Gilberto Igrejas
- Department of Genetics and Biotechnology, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
- Functional Genomics and Proteomics Unit, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
- LAQV-REQUIMTE, Faculty of Science and Technology, Nova University of Lisbon, Lisbon, Portugal
| | - Patrícia Poeta
- Veterinary Science Department, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
- LAQV-REQUIMTE, Faculty of Science and Technology, Nova University of Lisbon, Lisbon, Portugal
| | - Cármen Torres
- Área de Bioquímica y Biología Molecular, Universidad de La Rioja, Logroño, Spain
| | - Nelsi Zaccheroni
- G. Ciamician Department of Chemistry, University of Bologna, Bologna, Italy
| | - Luca Prodi
- G. Ciamician Department of Chemistry, University of Bologna, Bologna, Italy
| | - Elisabete Oliveira
- BIOSCOPE Group, LAQV@REQUIMTE, Chemistry Department, Faculty of Science and Technology, NOVA University of Lisbon, Almada, Portugal
- Proteomass Scientific Society, Costa de Caparica, Portugal
| | - Carlos Lodeiro
- BIOSCOPE Group, LAQV@REQUIMTE, Chemistry Department, Faculty of Science and Technology, NOVA University of Lisbon, Almada, Portugal
- Proteomass Scientific Society, Costa de Caparica, Portugal
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Sharma P, Kumar D, Mutnuri S. UPLC-MS/MS method validation of cipr ofloxacin in human urine: Application to biodegradability study in microbial fuel cell. Biomed Chromatogr 2018; 33:e4392. [PMID: 30239025 DOI: 10.1002/bmc.4392] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 09/08/2018] [Accepted: 09/13/2018] [Indexed: 11/08/2022]
Abstract
To enable the reliable quantification of ciprofloxacin in human urine, a sensitive and selective assay based on liquid chromatography-tandem mass spectrometry was developed. The chromatographic separation of the ciprofloxacin was carried out on a Zorbex Eclipse C18 column using methanol and ammonium acetate as a mobile phase by the gradient elution method. The developed assay covered a wide range of concentrations (1.56-100 ng/mL) with a lower limit of detection of 0.76 ng/mL. Quantification was performed using the multiple reaction monitoring transitions 331.8/231 for ciprofloxacin and 362/318 for ofloxacin (internal standard). This assay was validated for linearity, accuracy, precision and recovery. The validated method was then applied to the biodegradability of ciprofloxacin (99%) from human urine in the microbial fuel cell.
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Affiliation(s)
- Priya Sharma
- BITS Pilani, KK Birla Goa Campus, Applied Environmental Biotechnology Laboratory, Zuarinagar, Goa, India
| | - Devendra Kumar
- BITS Pilani, KK Birla Goa Campus, Central Sophisticated Instrumentation Facility, Zuarinagar, Goa, India
| | - Srikanth Mutnuri
- BITS Pilani, KK Birla Goa Campus, Applied Environmental Biotechnology Laboratory, Zuarinagar, Goa, India
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