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Dharmapalan D, Bielicki J, Sharland M. Harmonization of Amoxicillin Dose, Duration, and Formulation for Acute Childhood Respiratory Infections. Antibiotics (Basel) 2023; 12:1138. [PMID: 37508234 PMCID: PMC10376083 DOI: 10.3390/antibiotics12071138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 06/18/2023] [Accepted: 06/28/2023] [Indexed: 07/30/2023] Open
Abstract
Pediatric guidelines vary in their recommended amoxicillin dosing for common respiratory infections. It would help program delivery if there was harmonization of dosing and formulation of amoxicillin across multiple clinical respiratory infections, considering the pharmacokinetics, common targets, drug resistance, availability, cost effectiveness, and ease of administration. The World Health Organization EML AWaRe Book recommends higher dose amoxicillin given twice daily for five days for all uncomplicated respiratory infections where an antibiotic is indicated. The WHO AWaRe Book amoxicillin dosing guidance can be achieved for infants and older children using only scored 250 mg and 500 mg dispersible tablets (DTs), the WHO recommended child formulation. There is a clear need for wider availability of 250 mg/500 mg dispersible tablets of amoxicillin in both public and private health care sectors, to improve access to essential antibiotics.
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Affiliation(s)
- Dhanya Dharmapalan
- Consultant in Pediatric Infectious Diseases, Apollo Hospitals, Navi Mumbai 400614, India
| | - Julia Bielicki
- Centre for Neonatal and Paediatric Infection, Institute of Infection and Immunity, St. George’s University of London, Cranmer Terrace, London SW17 0RE, UK; (J.B.); (M.S.)
| | - Mike Sharland
- Centre for Neonatal and Paediatric Infection, Institute of Infection and Immunity, St. George’s University of London, Cranmer Terrace, London SW17 0RE, UK; (J.B.); (M.S.)
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Pham THY, Mai TT, Nguyen HA, Chu TTH, Vu TTH, Le QH. Voltammetric Determination of Amoxicillin Using a Reduced Graphite Oxide Nanosheet Electrode. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2021; 2021:8823452. [PMID: 34007510 PMCID: PMC8099507 DOI: 10.1155/2021/8823452] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 10/14/2020] [Accepted: 04/15/2021] [Indexed: 05/05/2023]
Abstract
A reduced graphite oxide nanosheet electrode (RGOnS) was prepared as a sensor for amoxicillin (AMX) detection, an antibiotic commonly used in the livestock farm, by the square-wave adsorptive stripping voltammetry technique. Graphite oxide with nanosheet shape was produced from a graphite electrode by a chronoamperometry process at 5 V and then an electrochemical reduction process was carried out to form RGOnS with restored long-range conjugated networks and better conductivity. The electrodes were characterized by SEM, EDX, and FTIR spectroscopy. The RGOnS electrode prepared at an optimal reduction potential of -1 V for 120 s exhibits a larger electrochemical active surface area, and the obtained oxidation signal of AMX is approximately ten times higher than that of the pristine graphite electrode. The analytical conditions such as the pH of electrolyte and accumulation time were optimized. The calibration curve built under the optimal conditions provided a good linear relationship in the range of AMX concentration from 0.5-80 µM with the correlation coefficient of 0.9992. The limit of detection was calculated as 0.193 µM. Satisfactory results are obtained from the detection of the AMX in different samples using the prepared electrode.
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Affiliation(s)
- Thi Hai Yen Pham
- Institute of Chemistry, Vietnam Academy of Science Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 100000, Vietnam
| | - Thi Trang Mai
- VNU University of Science Hanoi, 19 Le Thanh Tong, Hoan Kiem, Hanoi 100000, Vietnam
| | - Hoang Anh Nguyen
- Institute of Chemistry, Vietnam Academy of Science Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 100000, Vietnam
| | - Thi Thu Hien Chu
- Department of Chemistry, National University of Civil Engineering (NUCE), 55, Giai Phong, Hai Ba Trung, Hanoi 100000, Vietnam
| | - Thi Thu Ha Vu
- Institute of Chemistry, Vietnam Academy of Science Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 100000, Vietnam
- University of Science and Technology of Hanoi (USTH), Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 100000, Vietnam
| | - Quoc Hung Le
- Institute of Chemistry, Vietnam Academy of Science Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 100000, Vietnam
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Kazek-Kęsik A, Nosol A, Płonka J, Śmiga-Matuszowicz M, Gołda-Cępa M, Krok-Borkowicz M, Brzychczy-Włoch M, Pamuła E, Simka W. PLGA-amoxicillin-loaded layer formed on anodized Ti alloy as a hybrid material for dental implant applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 94:998-1008. [PMID: 30423788 DOI: 10.1016/j.msec.2018.10.049] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2018] [Revised: 09/14/2018] [Accepted: 10/11/2018] [Indexed: 12/26/2022]
Abstract
In this paper, the preparation of a functional hybrid coating loaded with a drug (amoxicillin) on a promising titanium alloy - Ti-15Mo alloy is presented. The titanium alloy surface was anodized in solution with bioactive compounds to obtain a porous oxide layer favorable for MG-63 osteoblast-like cell adhesion. Then, a poly(lactide-co-glycolide) (PLGA) loaded with amoxicillin layer was formed using a dip-coating technique to cover the oxide layer, without filling in all of the pores. The morphology of the surface was evaluated using scanning electron microscopy supported by 3D Roughness Reconstruction software. The surface treatment of the Ti-15Mo alloy surface caused the surface roughness to increase up to 1.71 μm. The anodization process caused the Ti-15Mo alloy surface to become slightly more hydrophilic; however, the formation of the PLGA layer loaded with drug increased the contact angle to 96.5° ± 2.2°, respectively. After 4 weeks of polymer layer degradation, the registered signals on the 1H NMR spectrum were identical to the signals registered for lactic acid (LAc), which confirms that the polymer layer was degraded within a short period of time. The concentration of drug released into the artificial saliva was investigated using high-performance liquid chromatography (HPLC) up to 12 h of coatings immersion. During the first hour of coating degradation in artificial saliva, and the concentration of the drug (13 μg/ml) was enough to inhibit bacterial growth of S. aureus and S. epidermidis. These results were confirmed by agar plate diffusion method and evaluation of the minimal inhibitory concentration (MIC). The cytocompatibility of the materials was determined using the osteoblast-like cells MG-63, and the viability and cell morphology (live/dead staining) were also evaluated. The results showed that amoxicillin influences the osteoblast-like MG-63 cells' behavior during cell culture, especially for the first few hours. The influence on the type of surface treatment on MG-63 cell behavior during 7 days of culture is discussed in this paper. To the best of our knowledge, this is the first time that a fast-degrading layer with amoxicillin has been deposited on previously anodized Ti surface. The formation of functional coating may find application as a cytocompatible coating to prevent bacterial adhesion on long-term implant surfaces.
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Affiliation(s)
- Alicja Kazek-Kęsik
- Faculty of Chemistry, Silesian University of Technology, B. Krzywoustego Street 6, 44-100 Gliwice, Poland.
| | - Agnieszka Nosol
- Faculty of Chemistry, Silesian University of Technology, B. Krzywoustego Street 6, 44-100 Gliwice, Poland
| | - Joanna Płonka
- Faculty of Chemistry, Silesian University of Technology, B. Krzywoustego Street 6, 44-100 Gliwice, Poland
| | - Monika Śmiga-Matuszowicz
- Faculty of Chemistry, Silesian University of Technology, M. Strzody 9 Street, 44-100 Gliwice, Poland
| | - Monika Gołda-Cępa
- Faculty of Chemistry, Jagiellonian University, Gronostajowa Street 2, 30-387 Krakow, Poland
| | - Małgorzata Krok-Borkowicz
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Mickiewicza Av. 30, 30-059 Krakow, Poland
| | - Monika Brzychczy-Włoch
- Department of Microbiology, Jagiellonian University Medical College, Czysta 18 Street, 31-121 Krakow, Poland
| | - Elżbieta Pamuła
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Mickiewicza Av. 30, 30-059 Krakow, Poland
| | - Wojciech Simka
- Faculty of Chemistry, Silesian University of Technology, B. Krzywoustego Street 6, 44-100 Gliwice, Poland
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Pina AS, Batalha ÍL, Fernandes CSM, Aoki MA, Roque ACA. Exploring the potential of magnetic antimicrobial agents for water disinfection. WATER RESEARCH 2014; 66:160-168. [PMID: 25201339 DOI: 10.1016/j.watres.2014.08.024] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2014] [Revised: 07/16/2014] [Accepted: 08/18/2014] [Indexed: 06/03/2023]
Abstract
Industrial and urban activities yield large amounts of contaminated groundwater, which present a major health issue worldwide. Infectious diseases are the most common health risk associated with drinking-water and wastewater remediation is a major concern of our modern society. The field of wastewater treatment is being revolutionized by new nano-scale water disinfection devices which outperform most currently available technologies. In particular, iron oxide magnetic nanoparticles (MNPs) have been widely used in environmental applications due to their unique physical-chemical properties. In this work, poly(ethylene) glycol (PEG)-coated MNPs have been functionalized with (RW)3, an antimicrobial peptide, to yield a novel magnetic-responsive support with antimicrobial activity against Escherichia coli K-12 DSM498 and Bacillus subtilis 168. The magnetic-responsive antimicrobial device showed to be able to successfully disinfect the surrounding solution. Using a rapid high-throughput screening platform, the minimal inhibitory concentration (MIC) was determined to be 500 μM for both strains with a visible bactericidal effect.
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Affiliation(s)
- Ana S Pina
- REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal.
| | - Íris L Batalha
- REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - Cláudia S M Fernandes
- REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - Matheus A Aoki
- REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - Ana C A Roque
- REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal.
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Daniel M. Antibiotics for otitis media with effusion in children. Clin Otolaryngol 2013; 38:56-7. [DOI: 10.1111/coa.12069] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/05/2012] [Indexed: 11/29/2022]
Affiliation(s)
- M. Daniel
- NIHR Nottingham Hearing Biomedical Research Unit; Nottingham; UK
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Hedrick JA, Sher LD, Schwartz RH, Pierce P. Cefprozil versus high-dose amoxicillin/clavulanate in children with acute otitis media. Clin Ther 2001; 23:193-204. [PMID: 11293553 DOI: 10.1016/s0149-2918(01)80002-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND The recommendation of the Drug-Resistant Streptococcus pneumoniae Therapeutic Working Group that high-dose amoxicillin, with or without clavulanate, be used to treat acute otitis media (AOM) addressed concerns about the efficacy of existing therapies against drug-resistant S. pneumoniae. This recommendation relied on pharmacodynamic predictions of concentrations of amoxicillin in middle-ear fluid remaining higher than minimum inhibitory concentrations against intermediately resistant S. pneumoniae for >40% of the dosing interval. OBJECTIVE This study compared the tolerability and efficacy of cefprozil and high-dose amoxicillin/clavulanate in patients with AOM. METHODS Patients were randomized to receive 10 days of investigator-blinded oral treatment with either cefprozil suspension (30 mg/kg/d in 2 divided doses) or amoxicillin/clavulanate (45/6.4 mg/kg/d) plus amoxicillin (45 mg/kg/d) in 2 divided doses. The primary efficacy end point was the clinical cure rate 4 to 7 days after the end of treatment. Clinical response by age (6 months-<2 years vs > or =2-7 years), disease severity, and unilateral versus bilateral ear infection was also examined. The primary measures of tolerability were the frequency and severity of adverse events and their relation to study drug. Adverse events were either spontaneously reported or elicited during examination and questioning of the patient. Identified adverse events were coded and recorded using the COSTART (Coding Symbols for Thesaurus of Adverse Reaction Terms) system. RESULTS Three hundred four children between the ages of 6 months and 7 years with > or =1 sign or symptom of AOM were enrolled in the study, and 303 (150 cefprozil, 153 amoxicillin/clavulanate) were treated. Twenty-three patients in each treatment group were not evaluable; thus, 257 children were included in the analysis of evaluable patients. Clinical cure rates were 87% (110/127) with cefprozil and 89% (116/130) with amoxicillin/clavulanate (95% CI for the difference in cure rate, -10.7% to 4.1%). No between-group differences in efficacy were noted by age, disease severity, or unilateral or bilateral involvement. The overall incidence of drug-related adverse events was significantly lower with cefprozil than with amoxicillin/clavulanate (19% vs 32%, respectively; P = 0.008), as was the incidence of diarrhea (9% vs 19%, respectively; P = 0.021). Adverse events prompted discontinuation of therapy in 4 (3%) cefprozil patients and 8 (5%) amoxicillin/clavulanate patients. CONCLUSIONS Based on a search of MEDLINE, this study is the first direct comparison of cefprozil versus high-dose amoxicillin/clavulanate. Cefprozil was as effective as high-dose amoxicillin/clavulanate, with a lower incidence of adverse events.
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Affiliation(s)
- J A Hedrick
- Kentucky Pediatric/Adult Research, Bardstown 40004, USA.
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