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  1. Article ; Online: Green Method for Evaluation of Marbofloxacin Tablets by HPLC and Evaluation of Interchangeability With UV and Turbidimetric Methods.

    de Oliveira, Aline Sinzervinch / de Oliveira, Naiara Raica Lopes / de Oliveira Neto, Jerônimo Raimundo / Tavares, Layla Lopes / Kogawa, Ana Carolina

    Journal of AOAC International

    2023  Volume 106, Issue 6, Page(s) 1432–1437

    Abstract: Background: Marbofloxacin (MAR) is a veterinary antimicrobial, marketed in injectable solution, oral suspension, and tablets. MAR has no monograph for tablet evaluation in official compendiums. High Performance Liquid Chromatography (HPLC) methods ... ...

    Abstract Background: Marbofloxacin (MAR) is a veterinary antimicrobial, marketed in injectable solution, oral suspension, and tablets. MAR has no monograph for tablet evaluation in official compendiums. High Performance Liquid Chromatography (HPLC) methods present in the literature for evaluating MAR in tablets do not follow the principles of green and sustainable analytical chemistry.
    Objective: A green, clean, and sustainable method by HPLC was developed and validated to evaluate the content and stability of MAR in tablets, in addition to comparing it with other methods available in the literature.
    Method: A C8, 5 µm, 4.6 × 150 mm (ACE®) column, purified water with 0.2% formic acid-ethanol (70:30, v/v) as the mobile phase, and a flow rate of 0.7 mL/min at 296 nm were used.
    Results: The method was linear over a concentration range of 1-10 μg/mL, selective for tablet matrix and forced degradation, precise with relative standard deviations (RDS) less than 5%, accurate with recovery of 99.99%, and robust to changes in the mobile phase, flow rate, wavelength, equipment, and column brand. The retention time for MAR was approximately 3.1 min.
    Conclusions: The method can be used in routine analysis of MAR in tablets in chemical-pharmaceutical laboratories. Furthermore, it can be used to verify the stability of MAR-based products and proved to be interchangeable with spectrophotometric method in the UV region and turbidimetric microbiological method.
    Highlights: A green method for evaluation of marbofloxacin tablets by HPLC was developed and validated. Additionally, it has been shown to be interchangeable with UV and turbidimetric methods.
    MeSH term(s) Chromatography, High Pressure Liquid/methods ; Fluoroquinolones ; Indicators and Reagents ; Tablets ; Reproducibility of Results
    Chemical Substances marbofloxacin (8X09WU898T) ; Fluoroquinolones ; Indicators and Reagents ; Tablets
    Language English
    Publishing date 2023-09-07
    Publishing country England
    Document type Journal Article
    ZDB-ID 1103149-9
    ISSN 1944-7922 ; 1060-3271
    ISSN (online) 1944-7922
    ISSN 1060-3271
    DOI 10.1093/jaoacint/qsad102
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: The presence of antibiotics and multidrug-resistant Staphylococcus aureus reservoir in a low-order stream spring in central Brazil.

    Dos Santos, Igor Romeiro / da Silva, Isabela Náthaly Machado / de Oliveira Neto, Jerônimo Raimundo / de Oliveira, Naiara Raica Lopes / de Sousa, Adriano Roberto Vieira / de Melo, Anielly Monteiro / de Paula, Joelma Abadia Marciano / do Amaral, Cátia Lira / Silveira-Lacerda, Elisângela de Paula / da Cunha, Luiz Carlos / Bailão, Elisa Flávia Luiz Cardoso

    Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology

    2023  Volume 54, Issue 2, Page(s) 997–1007

    Abstract: The disposal of industrial effluents strongly influences low-order streams, which makes them fragile ecosystems that can be impacted by contamination. In central Brazil, the Extrema River spring targets the dumping of pharmaceutical products from the ... ...

    Abstract The disposal of industrial effluents strongly influences low-order streams, which makes them fragile ecosystems that can be impacted by contamination. In central Brazil, the Extrema River spring targets the dumping of pharmaceutical products from the surrounding industries. So, this work aimed to investigate the presence of antibiotics in Extrema River spring samples and the isolation of Staphylococcus aureus, a potential multidrug-resistant bacteria, verifying the antimicrobial resistance profile of these isolates. Three campaigns were carried out in different locals (P1-P3) between October and December 2021, in the dry and rainy seasons. The high-performance liquid chromatography-tandem mass spectrometry (LCMS) approach indicated the presence of sulfamethoxazole (≥ 1 ng/L), metronidazole (< 0.5 ng/L), and chloramphenicol (< 5 ng/L) in the water samples in November (rainy season). S. aureus was isolated in P1 (n = 128), P2 (n = 168), and P3 (n = 36), with greater resistance to trimethoprim-sulfamethoxazole (90%), clindamycin (70%), and gentamicin (60%). The presence of antibiotics in the Extrema River spring may cause S. aureus antibiotic resistance development. The presence of antibiotics and the high percentage of isolated multidrug-resistant S. aureus in the Extrema River spring cause concern and indicate the clandestine dumping of effluents from nearby pharmaceutical industries. Since preserving the springs of low-order streams is important for the environment and public health, we encourage monitoring the wastewater from Extrema River's nearby pharmaceutical industries and preserving the spring of this river.
    MeSH term(s) Humans ; Anti-Bacterial Agents/pharmacology ; Methicillin-Resistant Staphylococcus aureus ; Staphylococcus aureus ; Brazil ; Ecosystem ; Staphylococcal Infections ; Drug Resistance, Multiple, Bacterial ; Microbial Sensitivity Tests
    Chemical Substances Anti-Bacterial Agents
    Language English
    Publishing date 2023-04-22
    Publishing country Brazil
    Document type Journal Article
    ZDB-ID 2017175-4
    ISSN 1678-4405 ; 1517-8382
    ISSN (online) 1678-4405
    ISSN 1517-8382
    DOI 10.1007/s42770-023-00973-9
    Database MEDical Literature Analysis and Retrieval System OnLINE

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