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  1. Article ; Online: Case Commentary: When Voldemort Meets Sauron: Treatment Considerations for Emerging Dual-Carbapenemase-Producing Extensively Drug-Resistant Pseudomonas aeruginosa.

    Wangchinda, Walaiporn / Pogue, Jason M

    Antimicrobial agents and chemotherapy

    2023  Volume 67, Issue 7, Page(s) e0047523

    Abstract: Infections caused by extensively drug-resistant Pseudomonas aeruginosa are difficult to treat due to limited effective treatment options. In this issue, a patient with a corneal infection caused by a Verona integron-encoded metallo-β-lactamase (VIM)- and ...

    Abstract Infections caused by extensively drug-resistant Pseudomonas aeruginosa are difficult to treat due to limited effective treatment options. In this issue, a patient with a corneal infection caused by a Verona integron-encoded metallo-β-lactamase (VIM)- and Guiana extended-spectrum β-lactamase (GES)-coproducing P. aeruginosa strain associated with the recent artificial tears-related outbreak in the United States is described. This resistance genotype/phenotype further compromises therapeutic options, and this report provides insights into diagnostic and treatment approaches for clinicians dealing with infections due to this highly resistant P. aeruginosa.
    MeSH term(s) Humans ; Pseudomonas aeruginosa/genetics ; Pseudomonas Infections/drug therapy ; Pseudomonas Infections/epidemiology ; beta-Lactamases/genetics ; beta-Lactamases/pharmacology ; Bacterial Proteins/genetics ; Bacterial Proteins/pharmacology ; Anti-Bacterial Agents/pharmacology ; Anti-Bacterial Agents/therapeutic use ; Microbial Sensitivity Tests
    Chemical Substances carbapenemase (EC 3.5.2.6) ; beta-Lactamases (EC 3.5.2.6) ; Bacterial Proteins ; Anti-Bacterial Agents
    Language English
    Publishing date 2023-06-13
    Publishing country United States
    Document type Journal Article
    ZDB-ID 217602-6
    ISSN 1098-6596 ; 0066-4804
    ISSN (online) 1098-6596
    ISSN 0066-4804
    DOI 10.1128/aac.00475-23
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: JMM Profile: Fosfomycin: a potential antibiotic for multi- and extensively resistant bacteria.

    Wangchinda, Walaiporn / Rattanaumpawan, Pinyo

    Journal of medical microbiology

    2022  Volume 71, Issue 8

    Abstract: Fosfomycin (FOF) is the first antimicrobial of the epoxide class. It is commercially available in oral and parenteral formulations. Oral FOF is widely used to treat uncomplicated cystitis in women, while parenteral FOF is extensively utilized for upper ... ...

    Abstract Fosfomycin (FOF) is the first antimicrobial of the epoxide class. It is commercially available in oral and parenteral formulations. Oral FOF is widely used to treat uncomplicated cystitis in women, while parenteral FOF is extensively utilized for upper urinary tract infections. FOF has a broad-spectrum bactericidal activity with a low risk of cross-resistance to other antimicrobial classes. Therefore, parenteral FOF is increasingly prescribed adjunctive therapy to treat extra-urinary tract infections caused by multidrug-resistant, Gram-negative bacteria.
    MeSH term(s) Anti-Bacterial Agents/pharmacology ; Anti-Bacterial Agents/therapeutic use ; Bacteria ; Drug Resistance, Multiple, Bacterial ; Female ; Fosfomycin/pharmacology ; Fosfomycin/therapeutic use ; Humans ; Urinary Tract Infections/drug therapy
    Chemical Substances Anti-Bacterial Agents ; Fosfomycin (2N81MY12TE)
    Language English
    Publishing date 2022-08-11
    Publishing country England
    Document type Journal Article
    ZDB-ID 218356-0
    ISSN 1473-5644 ; 0022-2615
    ISSN (online) 1473-5644
    ISSN 0022-2615
    DOI 10.1099/jmm.0.001573
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  3. Article ; Online: Population pharmacokinetic/pharmacodynamic target attainment analysis of IV fosfomycin for the treatment of MDR Gram-negative bacterial infections.

    Wangchinda, Walaiporn / Pogue, Jason M / Thamlikitkul, Visanu / Leelawattanachai, Pannee / Koomanachai, Pornpan / Pai, Manjunath P

    The Journal of antimicrobial chemotherapy

    2024  

    Abstract: Background: IV fosfomycin is used against MDR Gram-negative bacilli (GNB) but has dose-limiting side effects, especially in patients with impaired kidney function.: Objectives: To determine the optimal dosage of IV fosfomycin for patients with ... ...

    Abstract Background: IV fosfomycin is used against MDR Gram-negative bacilli (GNB) but has dose-limiting side effects, especially in patients with impaired kidney function.
    Objectives: To determine the optimal dosage of IV fosfomycin for patients with varying degrees of kidney function.
    Methods: Adult patients receiving IV fosfomycin for treatment of GNB were eligible. Five serial blood samples were collected after at least three doses of fosfomycin; plasma was assayed by LC-MS/MS and modelled by population pharmacokinetic analysis. The PTA for AUC24/MIC of 98.9 for Escherichia coli and Klebsiella pneumoniae, and 40.8 for Pseudomonas aeruginosa were computed by Monte Carlo simulations. Cumulative fractions of response (CFR) were analysed for each pathogen using EUCAST MIC distributions.
    Results: A total of 24 patients were included. Creatinine clearance (CLCR) and gender significantly influenced fosfomycin clearance. The kidney function-adjusted dosing regimens are proposed by using the lowest dose that can achieve ≥90% PTA for AUC24/MIC of 98.9 at an MIC of ≤32 mg/L (EUCAST v.13 susceptibility breakpoint for Enterobacterales). For patients with normal kidney function (CLCR 91-120 mL/min), a dosage of 15 g/day is suggested. This regimen achieved 97.1% CFR against E. coli, whereas CFR was 72.9% for K. pneumoniae and 76.7% for P. aeruginosa.
    Conclusions: A fosfomycin dosage of 15 g/day with adjustment according to kidney function provided high PTA and CFR when treating E. coli. This dosage is lower than that used in current practice and may improve tolerability. Higher dosages may be needed for P. aeruginosa; however, safety data are limited.
    Language English
    Publishing date 2024-04-10
    Publishing country England
    Document type Journal Article
    ZDB-ID 191709-2
    ISSN 1460-2091 ; 0305-7453
    ISSN (online) 1460-2091
    ISSN 0305-7453
    DOI 10.1093/jac/dkae111
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  4. Article: Development and Implementation of a Mobile Application for Choosing Empirical Antimicrobial Therapy for Bacteremia, Pneumonia, Urinary Tract Infection, and Skin and Soft Tissue Infection among Hospitalized Patients.

    Chaloernpoj, Kanthon / Wangchinda, Walaiporn / Koomanachai, Pornpan / Thamlikitkul, Visanu / Rattanaumpawan, Pinyo

    Antibiotics (Basel, Switzerland)

    2023  Volume 12, Issue 1

    Abstract: Clinical practice guidelines (CPGs) and computerized clinical decision support programs are effective antimicrobial stewardship strategies. The DigitalAMS™, a mobile-based application for choosing empirical antimicrobial therapy under the hospital’s CPGs, ...

    Abstract Clinical practice guidelines (CPGs) and computerized clinical decision support programs are effective antimicrobial stewardship strategies. The DigitalAMS™, a mobile-based application for choosing empirical antimicrobial therapy under the hospital’s CPGs, was implemented at Siriraj Hospital and evaluated. From January to June 2018, a cross-sectional study was conducted among 401 hospitalized adults who received ≥1 dose of antimicrobials and had ≥1 documented site-specific infection. The antimicrobial regimen prescribed by the ward physician (WARD regimen), recommended by the DigitalAMS™ (APP regimen), and recommended by two independent infectious disease (ID) physicians before (Emp-ID regimen) and after (Def-ID regimen) the final microbiological results became available were compared in a pairwise fashion. The percent agreement of antimicrobial prescribing between the APP and Emp-ID regimens was 85.7% in the bacteremia group, 59.1% in the pneumonia group, 78.6% in the UTI group, and 85.2% in the SSTI group. The percent agreement between the APP and Emp-ID regimens was significantly higher than that between the WARD and Emp-ID regimens in three site-specific infection groups: the bacteremia group (85.7% vs. 47.9%, p < 0.001), the UTI group (78.6% vs. 37.8%, p < 0.001), and the SSTI group (85.2% vs. 40.2%, p < 0.001). Furthermore, the percent agreement between the APP and Def-ID regimens was similar to that between the Emp-ID and Def-ID regimens in all sites of infection. In conclusions, the implementation of DigitalAMS™ seems useful but needs some revisions. The dissemination of this ready-to-use application with customized clinical practice guidelines to other hospital settings may be beneficial.
    Language English
    Publishing date 2023-01-07
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2681345-2
    ISSN 2079-6382
    ISSN 2079-6382
    DOI 10.3390/antibiotics12010113
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  5. Article: Epidemiology of Carbapenem-Resistant

    Wangchinda, Walaiporn / Laohasakprasit, Kanokwan / Lerdlamyong, Kanokorn / Thamlikitkul, Visanu

    Infection and drug resistance

    2022  Volume 15, Page(s) 2199–2210

    Abstract: Purpose: To investigate the epidemiology of carbapenem-resistant : Material and methods: Two adult cohorts were enrolled. Cohort I comprised hospitalized patients who had CRE isolated from their clinical specimens during 2018-2020. CRE colonization ... ...

    Abstract Purpose: To investigate the epidemiology of carbapenem-resistant
    Material and methods: Two adult cohorts were enrolled. Cohort I comprised hospitalized patients who had CRE isolated from their clinical specimens during 2018-2020. CRE colonization or CRE infection was based on the absence/presence of clinical features of infection. Information regarding the natural history and clinical course of these patients was collected during hospitalization. Stool samples were evaluated for CRE once a week during hospitalization, and then once every few months after discharge until negative for CRE. Cohort II comprised patients who had CRE isolated from clinical specimens during hospitalization and who were discharged during 2015-2018. CRE in stool samples collected from these patients every few months was assessed to determine duration of CRE in stool.
    Results: CRE in stool was detected in 69.7% of 353 patients in cohort I.
    Conclusion: CRE isolated from clinical specimens in hospitalized patients are more likely to cause colonization than infection. Patients with CRE colonization are at risk of subsequent CRE infection with high mortality. Stool culture for CRE is needed to verify if contact precautions can be discontinued because the duration of CRE colonization in stool varied from days to years.
    Language English
    Publishing date 2022-04-25
    Publishing country New Zealand
    Document type Journal Article
    ZDB-ID 2494856-1
    ISSN 1178-6973
    ISSN 1178-6973
    DOI 10.2147/IDR.S361013
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Active Surveillance for Carbapenem-Resistant

    Wangchinda, Walaiporn / Thamlikitkul, Visanu / Watcharasuwanseree, Sureerat / Tangkoskul, Teerawit

    Antibiotics (Basel, Switzerland)

    2022  Volume 11, Issue 10

    Abstract: Optimal measures for preventing and controlling carbapenem- ... ...

    Abstract Optimal measures for preventing and controlling carbapenem-resistant
    Language English
    Publishing date 2022-10-13
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2681345-2
    ISSN 2079-6382
    ISSN 2079-6382
    DOI 10.3390/antibiotics11101401
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  7. Article ; Online: A comparison of strategies for identifying patients at risk for carbapenem-resistant or extended β-lactam-resistant Pseudomonas aeruginosa.

    Wangchinda, Walaiporn / Kaye, Keith S / Patel, Twisha S / Albin, Owen R / Saravolatz, Louis / Petrie, Joshua G / Pogue, Jason M

    The Journal of antimicrobial chemotherapy

    2024  

    Abstract: Objectives: To assess risk factors for carbapenem-resistant Pseudomonas aeruginosa (CR) and extended-β-lactam-resistant P. aeruginosa (EBR) infection/colonization, and to develop and compare tools for predicting isolation of CR and EBR from clinical ... ...

    Abstract Objectives: To assess risk factors for carbapenem-resistant Pseudomonas aeruginosa (CR) and extended-β-lactam-resistant P. aeruginosa (EBR) infection/colonization, and to develop and compare tools for predicting isolation of CR and EBR from clinical cultures.
    Methods: This retrospective study analysed hospitalized patients with positive P. aeruginosa cultures between 2015 and 2021. Two case-control analyses were performed to identify risk factors and develop scoring tools for distinguishing patients with CR versus carbapenem-susceptible (CS) P. aeruginosa and EBR versus CS P. aeruginosa. The performance of institutionally derived scores, externally derived scores and the presence/absence of key risk factors to predict CR and EBR were then compared.
    Results: A total of 2379 patients were included. Of these, 8.3% had a positive culture for CR, 5.0% for EBR and 86.7% for CS P. aeruginosa. There was substantial overlap in risk factors for CR and EBR. Institutional risk scores demonstrated modestly higher area under the ROC curve values than external scores for predicting CR (0.67 versus 0.58) and EBR (0.76 versus 0.70). Assessing the presence/absence of ≥1 of the two strongest predictors (prior carbapenem use or CR isolation within 90 days) was slightly inferior to scoring tools for predicting CR, and comparable for predicting EBR.
    Conclusions: Clinicians concerned about CR in P. aeruginosa should consider the likelihood of EBR when making treatment decisions. A simple approach of assessing recent history of CR isolation or carbapenem usage performed similarly to more complex scoring tools and offers a more pragmatic way of identifying patients who require coverage for resistant P. aeruginosa.
    Language English
    Publishing date 2024-04-06
    Publishing country England
    Document type Journal Article
    ZDB-ID 191709-2
    ISSN 1460-2091 ; 0305-7453
    ISSN (online) 1460-2091
    ISSN 0305-7453
    DOI 10.1093/jac/dkae104
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  8. Article ; Online: Integrated one-day surveillance of antimicrobial use, antimicrobial consumption, antimicrobial resistance, healthcare-associated infection, and antimicrobial resistance burden among hospitalized patients in Thailand.

    Thamlikitkul, Visanu / Rattanaumpawan, Pinyo / Sirijatuphat, Rujipas / Wangchinda, Walaiporn

    The Journal of infection

    2020  Volume 81, Issue 1, Page(s) 98–106

    Abstract: Objectives: Surveillance of antimicrobial use (AMU), antimicrobial consumption (AMC), antimicrobial resistance (AMR), healthcare-associated infection (HAI), and AMR burden are usually measured by time-consuming and expensive multiple separate ... ...

    Abstract Objectives: Surveillance of antimicrobial use (AMU), antimicrobial consumption (AMC), antimicrobial resistance (AMR), healthcare-associated infection (HAI), and AMR burden are usually measured by time-consuming and expensive multiple separate longitudinal surveys. This study aimed to investigate feasibility and benefit of integrated one-day surveillance to estimate and monitor these parameters.
    Methods: Integrated one-day surveillance of AMU, AMC, AMR, HAI, and AMR burden among hospitalized patients in 183 hospitals in Thailand was conducted. Parameter data was collected for each patient who received antibiotic on a survey day.
    Results: AMU prevalence was 51.5% among 23,686 hospitalized patients. The most commonly used antibiotic for infection prophylaxis and treatment was cefazolin and ceftriaxone, respectively. The most common infection was pneumonia. Community-associated infection (CAI) was observed in 64.9%, and 34.1% had HAI. Prevalence of AMR was highest in A. baumannii infection. AMR in bacteria was more prevalent among HAI than among CAI. Consumption of all antibiotics was 18,103 defined daily doses. HAI prevalence was 14.0%. Health and economic burden were much higher in patients with antibiotic-resistant infection.
    Conclusions: Integrated one-day surveillance of these important parameters among hospitalized patients is feasible and can be used for estimation and monitoring from the facility-level to the national-level in resource-limited settings.
    MeSH term(s) Anti-Bacterial Agents/therapeutic use ; Anti-Infective Agents ; Delivery of Health Care ; Drug Resistance, Bacterial ; Humans ; Thailand
    Chemical Substances Anti-Bacterial Agents ; Anti-Infective Agents
    Language English
    Publishing date 2020-04-30
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 424417-5
    ISSN 1532-2742 ; 0163-4453
    ISSN (online) 1532-2742
    ISSN 0163-4453
    DOI 10.1016/j.jinf.2020.04.040
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  9. Article ; Online: Rat bite fever due to Streptobacillus notomytis complicated by meningitis and spondylodiscitis: a case report.

    Pongsuttiyakorn, Suchada / Kamolvit, Witchuda / Limsrivanichakorn, Sunee / Phothisirisakulwong, Arissa / Wangchinda, Walaiporn

    BMC infectious diseases

    2021  Volume 21, Issue 1, Page(s) 1017

    Abstract: Background: Only three other cases of rat bite fever caused by Streptobacillus notomytis in humans have been reported since this species was identified in 2015. Data specific to the differences in clinical features and geographic distribution between S. ...

    Abstract Background: Only three other cases of rat bite fever caused by Streptobacillus notomytis in humans have been reported since this species was identified in 2015. Data specific to the differences in clinical features and geographic distribution between S. notomytis infection and S. moniliformis infection are scarce. All previous cases of human S. notomytis infection were reported from Japan. This is the first case of S. notomytis infection reported from outside of Japan.
    Case presentation: A 72-year-old Thai woman was admitted to Siriraj Hospital (Bangkok, Thailand)-Thailand's largest university-based national tertiary referral center-in August 2020 with fever, myalgia, and polyarthralgia for 3 days, and gradually decreased consciousness for the past 1 day. Physical examination and laboratory investigations revealed septic arthritis of both knee joints, meningitis, and hepatitis. She was initially misdiagnosed as rheumatoid arthritis in the elderly since the initial investigations were unable to detect a causative pathogen. However, S. notomytis infection was later confirmed by polymerase chain reaction amplification of a part of the 16S rRNA gene and sequencing from synovial fluid. Her clinical course was also complicated by spondylodiscitis and epidural abscess caused by S. notomytis, which was detected from tissue biopsy. Therefore, rat bite fever in this patient manifested as meningitis, septic polyarthritis, hepatitis, and spondylodiscitis. The patient was treated with intravenous ceftriaxone then switched to oral amoxicillin with complete recovery.
    Conclusions: The clinical manifestations of S. notomytis infection are similar to those demonstrated in S. moniliformis infection. This case also showed that arthritis caused by S. notomytis mimics rheumatoid arthritis, and that meningitis and spondylodiscitis are potential coexisting complications that can be found in S. notomytis infection.
    MeSH term(s) Aged ; Animals ; Arthritis, Infectious/diagnosis ; Arthritis, Infectious/drug therapy ; Discitis/diagnosis ; Discitis/drug therapy ; Female ; Humans ; Meningitis ; RNA, Ribosomal, 16S/genetics ; Rat-Bite Fever/diagnosis ; Rat-Bite Fever/drug therapy ; Rats ; Streptobacillus/genetics ; Thailand
    Chemical Substances RNA, Ribosomal, 16S
    Language English
    Publishing date 2021-09-28
    Publishing country England
    Document type Case Reports ; Journal Article
    ISSN 1471-2334
    ISSN (online) 1471-2334
    DOI 10.1186/s12879-021-06715-2
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  10. Article ; Online: Disseminated histoplasmosis in a kidney transplant patient.

    Angsutararux, Taksaon / Chongtrakool, Piriyaporn / Sukpanichnant, Sanya / Wongwaipijarn, Kornpawee / Wangchinda, Walaiporn

    Transplant infectious disease : an official journal of the Transplantation Society

    2020  Volume 23, Issue 1, Page(s) e13405

    Abstract: Patients with impaired cell-mediated immunity have a higher risk of developing histoplasmosis; however, histoplasmosis after solid organ transplantation is rare. In Thailand, histoplasmosis cases are sporadic, and most cases are associated with human ... ...

    Abstract Patients with impaired cell-mediated immunity have a higher risk of developing histoplasmosis; however, histoplasmosis after solid organ transplantation is rare. In Thailand, histoplasmosis cases are sporadic, and most cases are associated with human immunodeficiency virus (HIV) infection. Herein, we report a case of disseminated histoplasmosis in a kidney transplant Thai recipient diagnosed by fungal staining of fungal culture from bronchoalveolar lavage and bone marrow biopsy. Liposomal amphotericin B was given followed by oral itraconazole. The patient's clinical condition was improved; however, his graft function was irreversibly declined. The majority of histoplasmosis cases after solid organ transplant presented with disseminated disease with pulmonary involvement. Even in a non-endemic area of histoplasmosis, suspected cases should be early diagnosed and promptly managed in order to reduce morbidity and mortality, especially in cell-mediated immunity defect patients like solid organ transplant recipients.
    MeSH term(s) Histoplasma ; Histoplasmosis ; Humans ; Itraconazole ; Kidney Transplantation
    Chemical Substances Itraconazole (304NUG5GF4)
    Language English
    Publishing date 2020-07-23
    Publishing country Denmark
    Document type Case Reports
    ZDB-ID 1476094-0
    ISSN 1399-3062 ; 1398-2273
    ISSN (online) 1399-3062
    ISSN 1398-2273
    DOI 10.1111/tid.13405
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