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Goto K, Hata H, Degawa K, Nakanishi Y, Obama K. Feasibility of Narrow-Spectrum Antimicrobial Agents for Post-Operative Intra-Abdominal Infections After Gastrectomy. Surg Infect (Larchmt) 2024; 25:492-498. [PMID: 38973700 DOI: 10.1089/sur.2024.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/09/2024] Open
Abstract
Introduction: Recently, antimicrobial resistance has received considerable attention. Broad-spectrum antimicrobial agents are recommended as the initial therapy for post-operative intra-abdominal infections. However, at our institution, we have adopted a tactic of initially treating post-operative intra-abdominal complications with relatively narrow-spectrum antimicrobial agents, such as second-generation cephalosporins. In the present study, we aimed to retrospectively analyze the use of antimicrobial agents and the resulting treatment outcomes in patients with intra-abdominal complications after gastrectomy at our facility. Methods: We conducted a retrospective observational study of patients treated with antibiotic agents for intra-abdominal infectious complications after gastrectomy between 2011 and 2021. We determined the proportion of "initial treatment failures" associated with the initial administration of antibiotic agents for post-operative intra-abdominal complications. Results: Post-operative intra-abdominal infections were observed in 29 patients. Broad-spectrum antimicrobial agents were not administered. We successfully treated 19 patients. Initial treatment failure was observed in 10 patients, of whom five experienced failure due to bacterial resistance to the initial antimicrobial agent. All 10 patients who experienced initial treatment failure were discharged after drainage procedures or other treatments. There were no deaths due to post-operative complications. Cefmetazole was used as the initial antimicrobial agent in 27 of the 29 patients. Conclusions: Considering that all patients with post-gastrectomy intra-abdominal infections were successfully treated using relatively narrow-spectrum antimicrobial agents, and initial treatment failure due to antimicrobial-resistant pathogens was 17.2%, the use of narrow-range antimicrobial agents for intra-abdominal infections after gastrectomy can be deemed appropriate.
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Affiliation(s)
- Kentaro Goto
- Division of Gastrointestinal Surgery, Department of Surgery, Kyoto University, Kyoto, Japan
| | - Hiroaki Hata
- Department of Surgery, National Hospital Organization Kyoto Medical Center, Kyoto, Japan
- Department of Infection Control and Prevention, National Hospital Organization Kyoto Medical Center, Kyoto, Japan
| | - Kanako Degawa
- Department of Surgery, National Hospital Organization Kyoto Medical Center, Kyoto, Japan
| | - Yasutaka Nakanishi
- Department of Surgery, National Hospital Organization Kyoto Medical Center, Kyoto, Japan
| | - Kazutaka Obama
- Division of Gastrointestinal Surgery, Department of Surgery, Kyoto University, Kyoto, Japan
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da Costa AC, Santa-Cruz F, Torres AV, Caldas EADL, Mazzota A, Kreimer F, Ferraz ÁAB. SURGICAL SITE INFECTION IN RESECTIONS OF DIGESTIVE SYSTEM TUMOURS. ARQUIVOS BRASILEIROS DE CIRURGIA DIGESTIVA : ABCD = BRAZILIAN ARCHIVES OF DIGESTIVE SURGERY 2024; 37:e1817. [PMID: 39166654 PMCID: PMC11338518 DOI: 10.1590/0102-6720202400024e1817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Accepted: 06/06/2024] [Indexed: 08/23/2024]
Abstract
Postoperative infectious complications are extremely important to surgeons and the entire medical care team. Among these complications, surgical site infection (SSI) appears to be one of the earliest and most prevalent events and is considered an inherent complication of surgical procedures. In oncological patients submitted to resections of digestive system tumors, there is a confluence of several risk factors for SSI, making it necessary to establish measures to maximize the control of this condition to provide a better prognosis for these patients. Some risk factors for SSI are the manipulation of structures hosting the highest density of pathogenic microorganisms, such as the colon, the patient's performance status, the patient's nutritional status, the use of chemotherapy and/or radiotherapy, and the surgical procedure itself, which tends to last longer and be more complex than surgeries for benign conditions of the digestive system. Therefore, this review sought to provide a qualitative analysis and a summary of the literature regarding the SSI of postoperative tumor patients who underwent surgical resection and were well-structured postoperatively, to provide objective data on this problem, and alert about the well-structured needs of individualized pre-, peri-, and post-protocols to avoid the development of these events.
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Affiliation(s)
- Adriano Carneiro da Costa
- Universidade Federal de Pernambuco, Hospital Universitário, Department of Surgery – Recife (PE), Brazil
| | - Fernando Santa-Cruz
- Universidade Federal de Pernambuco, Hospital Universitário, Department of Surgery – Recife (PE), Brazil
| | - Ana Valéria Torres
- Universidade Federal de Pernambuco, Hospital Universitário, Department of Surgery – Recife (PE), Brazil
| | | | - Alessandro Mazzota
- Institute Mutualiste Montsouris, Metabolic and Oncological Surgery, Department of Digestive – Paris, France
| | - Flávio Kreimer
- Universidade Federal de Pernambuco, Hospital Universitário, Department of Surgery – Recife (PE), Brazil
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Yamaguchi K, Maeda M, Ohmagari N, Muraki Y. Relationship between carbapenem use and major diagnostic category in curative care beds: Analysis of a 2020 Japanese national administrative database. J Infect Chemother 2024; 30:562-566. [PMID: 37952842 DOI: 10.1016/j.jiac.2023.11.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 11/02/2023] [Accepted: 11/08/2023] [Indexed: 11/14/2023]
Abstract
Excessive carbapenem use has contributed to the spread of carbapenem-resistant bacteria. In response, Japan's revised National Action Plan on Antimicrobial Resistance (AMR) 2023-2027 set the goal of a 20 % reduction in carbapenem use. The aim of this study is to reveal the circumstances associated with carbapenem use in diagnosis procedure combination (DPC) community hospitals and fee-for-service hospitals, which account for the majority of the hospitals in Japan. We analyzed publicly available data from the Survey of Discharged Patients conducted by the Ministry of Health, Labour and Welfare in 2020. We used multiple regression analysis to identify the factors associated with carbapenem use in small- to medium-sized hospitals. Considerable carbapenem use was observed in small- to medium-sized hospitals. There was a large difference in carbapenem use among curative care beds in both DPC community hospitals and non-DPC hospitals. Linear regression models showed the significant association of several major diagnostic categories (MDCs) with carbapenem use. In particular, rates of MDC No.02 (eye) and 05 (circulatory system) were potentially associated with excessive or inappropriate carbapenem use. A notable and novel study finding was that there was a large difference in carbapenem consumption as the number of curative care beds increased in both DPC community hospitals and non-DPC hospitals. This may contribute to the identification of carbapenem overuse and toward achieving the goal of the National Action Plan on AMR 2023-2027. Furthermore, identifying factors associated with carbapenem use helps in understanding disease-specific prescribing practices and detecting potential overuse.
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Affiliation(s)
- Kozue Yamaguchi
- Division of Infection Control Sciences, Department of Clinical Pharmacy, School of Pharmacy, Showa University, Tokyo, 142-8555, Japan.
| | - Masayuki Maeda
- Division of Infection Control Sciences, Department of Clinical Pharmacy, School of Pharmacy, Showa University, Tokyo, 142-8555, Japan.
| | - Norio Ohmagari
- AMR Clinical Reference Center, Disease Control and Prevention Center, National Center for Global Health and Medicine, Tokyo, 162-8655, Japan.
| | - Yuichi Muraki
- Department of Clinical Pharmacoepidemiology, Kyoto Pharmaceutical University, Kyoto, 607-8414, Japan.
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Aoki S, Yahara H, Nakao R, Tsuzukibashi O, Yahara K. Development of selective isolation media for detecting the genera Actinomyces and Schaalia from oral specimens containing indigenous bacteria. Access Microbiol 2024; 6:000768.v3. [PMID: 38868375 PMCID: PMC11165599 DOI: 10.1099/acmi.0.000768.v3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Accepted: 03/18/2024] [Indexed: 06/14/2024] Open
Abstract
To isolate specific bacteria from samples constituting the microbiota, it is essential to employ selective media that suppress the growth of resident bacteria other than specific target bacteria. Selective media for clinically important Actinomyces (including Schaalia, which was previously taxonomically classified as part of the genus Actinomyces) have been limited because they have been designed for a limited range of species within the genus and require ingredients which are difficult to prepare and handle. This study aimed to develop a selective medium [referred to as Actinomyces and Schaalia Selective Medium (ASSM)] for the isolation of a broad range of Actinomyces and Schaalia species from samples mixed with resident bacteria. The composition of ASSM includes yeast extract, agar, brain heart infusion (BHI), levofloxacin (LVFX), fosfomycin (FOM), colistin (CL) and metronidazole (MNZ). Evaluation of the medium using 24 swab samples serially collected from the roots of the teeth of a healthy individual for whom metagenome sequencing data of a saliva sample are publicly available revealed that ASSM adjusted to concentrations of LVFX 0.5 mg l-1, FOM 5 mg l-1, CL 1 mg l-1 and MNZ 2 mg l-1 and cultured anaerobically at 35 °C for 7 days enabled the isolation of Actinomyces species from 37.5 % of the samples. The inclusion of CL and MNZ in ASSM can also be useful for samples harbouring other bacterial species. The selective isolation medium is expected to contribute to studies investigating the relationship between these bacteria and their pathogenesis or disease.
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Affiliation(s)
- Sadao Aoki
- Antimicrobial Resistance Research Center, National Institute of Infectious Diseases, Tokyo, Japan
| | - Hiroko Yahara
- Genome Medical Science Project, Research Institute, National Center for Global Health and Medicine, Tokyo, Japan
- Department of Bacteriology I, National Institute of Infectious Diseases, Tokyo, Japan
| | - Ryoma Nakao
- Department of Bacteriology I, National Institute of Infectious Diseases, Tokyo, Japan
| | - Osamu Tsuzukibashi
- Department of Laboratory Medicine for Dentistry for the Compromised Patient, Nihon University School of Dentistry at Matsudo, Chiba, Japan
| | - Koji Yahara
- Antimicrobial Resistance Research Center, National Institute of Infectious Diseases, Tokyo, Japan
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Namiki T, Yokoyama Y, Hashi H, Oda R, Jibiki A, Kawazoe H, Matsumoto K, Suzuki S, Nakamura T. Pharmacokinetics/pharmacodynamics analysis and establishment of optimal dosing regimens using unbound cefmetazole concentration for patients infected with Extended-Spectrum β-lactamase producing Enterobacterales (ESBL-E). Pharmacotherapy 2024; 44:149-162. [PMID: 37984818 DOI: 10.1002/phar.2894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 10/20/2023] [Accepted: 10/26/2023] [Indexed: 11/22/2023]
Abstract
STUDY OBJECTIVE Establish methods for measuring cefmetazole (CMZ) concentrations conduct a pharmacokinetic/pharmacodynamic (PK/PD) analysis using unbound CMZ concentrations for extended-spectrum β-lactamase producing enterobacterales (ESBL-E) and investigate optimal dosing regimens for not undergoing hemodialysis (non-HD) and undergoing hemodialysis (HD) patients. DESIGN Prospective observational study. PATIENTS Included patients treated with CMZ who provided written informed consent and were admitted to the Tokyo Bay Urayasu Ichikawa Medical Center between August 2021 and July 2022. MEASUREMENTS Total and Unbound CMZ concentration was measured by high-performance liquid chromatography (HPLC) with solid-phase extraction and ultrafiltration. SETTING Determining the CMZ dosing regimen involved modified creatinine clearance (CLCR ) with measured body weight (BW) using the Cockcroft-Gault equation. For non-HD patients, blood samples were collected during at least three points. For patients undergoing HD, 1 g was administered via intravenous infusion, or rapid intravenous injection after HD, or 30 min before the end of HD. Blood samples were collected before HD (pre-HD), and 1 and 3 h after starting HD and post-HD. All blood samples were collected at steady-state. Patient information was collected from electronic medical records. An unbound PK model was constructed for the non-HD patients. A nomogram was constructed using Monte Carlo simulations with a 90% probability of target attainment at 70% free time above the minimum inhibitory concentration (MIC). For the HD patients, a nomogram was used to determine the optimal dosing regimen for each HD schedule. MAIN RESULTS CMZ measurement methods were established. A model analysis of unbound PK in 37 non-HD patients incorporated creatinine clearance (CLCR ) using the Cockcroft-Gault equation, albumin (ALB) for clearance and body weight (BW) for the volume of distribution. In Monte Carlo simulations, nomograms corresponding to the MIC (known and unknown) were generated for each covariate. Using the nomogram, non-HD patients with an ESBL-E MIC of 8 mg/L, a BW of 60 kg, an ALB of 25 g/L, and a CLCR of 60 mL/min required administration of 2 g every 6 h (1- and 3-h infusions). Unbound PK model parameters were calculated for 7 HD patients, and the optimal dosing regimens following PK/PD were determined for each HD schedule. In HD patients, the regimen after and during HD was established using a treatment that was effective up to an ESBL-E MIC of 4 mg/L. CONCLUSIONS The nomogram for CMZ regimens established by PK/PD analysis of measured CMZ concentrations enables optimal CMZ dosing for ESBL-E-infected patients.
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Affiliation(s)
- Takaya Namiki
- Division of Pharmaceutical Care Sciences, Keio University Graduate School of Pharmaceutical Sciences, Tokyo, Japan
- Department of Pharmacy, Tokyo Bay Urayasu Ichikawa Medical Center, Chiba, Japan
| | - Yuta Yokoyama
- Division of Pharmaceutical Care Sciences, Keio University Graduate School of Pharmaceutical Sciences, Tokyo, Japan
- Division of Pharmaceutical Care Sciences, Center for Social Pharmacy and Pharmaceutical Care Sciences, Keio University Faculty of Pharmacy, Tokyo, Japan
| | - Hideki Hashi
- Department of Pharmacy, Tokyo Bay Urayasu Ichikawa Medical Center, Chiba, Japan
| | - Rentaro Oda
- Department of Infectious Diseases, Tokyo Bay Urayasu Ichikawa Medical Center, Chiba, Japan
| | - Aya Jibiki
- Division of Pharmaceutical Care Sciences, Center for Social Pharmacy and Pharmaceutical Care Sciences, Keio University Faculty of Pharmacy, Tokyo, Japan
| | - Hitoshi Kawazoe
- Division of Pharmaceutical Care Sciences, Keio University Graduate School of Pharmaceutical Sciences, Tokyo, Japan
- Division of Pharmaceutical Care Sciences, Center for Social Pharmacy and Pharmaceutical Care Sciences, Keio University Faculty of Pharmacy, Tokyo, Japan
| | - Kazuaki Matsumoto
- Division of Pharmacodynamics, Keio University Faculty of Pharmacy, Tokyo, Japan
| | - Sayo Suzuki
- Division of Pharmaceutical Care Sciences, Keio University Graduate School of Pharmaceutical Sciences, Tokyo, Japan
- Division of Pharmaceutical Care Sciences, Center for Social Pharmacy and Pharmaceutical Care Sciences, Keio University Faculty of Pharmacy, Tokyo, Japan
| | - Tomonori Nakamura
- Division of Pharmaceutical Care Sciences, Keio University Graduate School of Pharmaceutical Sciences, Tokyo, Japan
- Division of Pharmaceutical Care Sciences, Center for Social Pharmacy and Pharmaceutical Care Sciences, Keio University Faculty of Pharmacy, Tokyo, Japan
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Hoshino Y, Ito R, Kikuchi M, Takahashi K, Ishimoto M. Efficacy of cefmetazole in immunocompetent patients with uncomplicated colonic diverticulitis: A propensity score matching analysis. J Infect Chemother 2024; 30:118-122. [PMID: 37739180 DOI: 10.1016/j.jiac.2023.09.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 09/13/2023] [Accepted: 09/18/2023] [Indexed: 09/24/2023]
Abstract
INTRODUCTION The incidence of colonic diverticulitis is increasing in Japan. Although antimicrobial chemotherapy is a treatment option, Japanese guidelines for diverticulosis do not recommend any antibiotic in particular and antibiotic selection is left to the discretion of the prescribing physician, who often selects antibiotics with anti-pseudomonal activity. Therefore, this study compared the efficacy of cefmetazole (CMZ) with that of tazobactam/piperacillin (TAZ/PIPC) in hospitalized Japanese immunocompetent patients with uncomplicated colonic diverticulitis. PATIENTS AND METHODS This retrospective study included Japanese immunocompetent patients hospitalized for colonic diverticulitis between April 2019 and March 2022. Participants were divided into the CMZ and TAZ/PIPC groups. After propensity score matching, the intergroup differences in clinical outcomes, including adverse events, mortality, and re-admission rate, were ascertained. RESULTS During the study period, 142 Japanese patients were hospitalized with community-onset colonic diverticulitis; 124 of these patients were immunocompetent. Of the 124 patients, 42 were excluded, and the CMZ and TAZ/PIPC groups comprised 62 and 20 patients, respectively. After propensity score matching, there were 16 patients in each group. There was no significant intergroup difference in the mortality and re-admission rates; however, the incidence of liver dysfunction was significantly higher (p = 0.018) in the TAZ/PIPC group. CONCLUSION In patients with colonic diverticulitis, CMZ therapy should be selected because of the adequate clinical outcomes and lower incidence of adverse events, as this would reduce broad-spectrum antibiotic use and minimize antibiotic-resistant bacteria.
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Affiliation(s)
- Yuta Hoshino
- Department of Pharmacy, Tohoku Rosai Hospital, Miyagi, 981-8563, Japan.
| | - Ryota Ito
- Department of Pharmacy, Tohoku Rosai Hospital, Miyagi, 981-8563, Japan
| | - Miyu Kikuchi
- Department of Pharmacy, Tohoku Rosai Hospital, Miyagi, 981-8563, Japan
| | - Kenichi Takahashi
- Department of Colorectal Surgery, Tohoku Rosai Hospital, Miyagi, 981-8563, Japan
| | - Masahiro Ishimoto
- Department of Pharmacy, Tohoku Rosai Hospital, Miyagi, 981-8563, Japan
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Muthupandian S, Meles HN, Gebregergis MW, Arockiaraj J. Multidrug-resistant extended-spectrum β-lactamase–producing bacteria complicate surgical site infection management as an emerging global threat. INTERNATIONAL JOURNAL OF SURGERY: GLOBAL HEALTH 2023; 6. [DOI: 10.1097/gh9.0000000000000326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/16/2023]
Affiliation(s)
- Saravanan Muthupandian
- Department of Pharmacology, AMR and Nanotherapeutics Laboratory, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai TN, India
| | - Hadush Negash Meles
- Department of Medical Laboratory Sciences, Unit of Medical Microbiology, College of Medicine and Health Science, Adigrat University, Adigrat, Ethiopia
| | - Miglas Welay Gebregergis
- Department of Midwifery, Unit of Maternity and Reproductive Health Nursing, College of Medicine and Health Science, Adigrat University, Adigrat, Ethiopia
| | - Jesu Arockiaraj
- Department of Biotechnology, SRM Institute of Science and Technology, Kattankulathur, Chengalpattu, TN, India
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Hashimoto T, Hashinaga K, Komiya K, Hiramatsu K. Prevalence of antimicrobial resistant genes in Bacteroides spp. isolated in Oita Prefecture, Japan. J Infect Chemother 2023; 29:284-288. [PMID: 36473684 DOI: 10.1016/j.jiac.2022.11.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 10/31/2022] [Accepted: 11/29/2022] [Indexed: 12/11/2022]
Abstract
INTRODUCTION Bacteroides spp. are the most common anaerobic bacteria isolated from the human gastrointestinal tract. Several resistant genes are present in Bacteroides spp. However, most studies have focused on the prevalence of the cfiA gene in Bacteroides fragilis alone. We assessed the susceptibility to antimicrobial agents and the prevalence of cepA, cfiA, cfxA, ermF, nim, and tetQ genes in Bacteroides strains isolated from clinical specimens in our hospital. METHODS We isolated 86 B. fragilis and 58 non-fragilis Bacteroides strains from human clinical specimens collected from January 2011 to November 2021. Resistance against piperacillin (PIPC), cefotaxime (CTX), cefepime (CFPM), meropenem (MEPM), clindamycin, and minocycline was determined. RESULTS The resistant rates of penicillins and cephalosporins in non-fragilis isolates were significantly higher than those in B. fragilis isolates. In B. fragilis isolates, the resistant rates of PIPC, CTX, and CFPM in cfxA-positive isolates were significantly higher than those in cfxA-negative isolates (71% vs. 16%, 77% vs. 19%, and 77% vs. 30%, respectively). Thirteen B. fragilis isolates harbored the cfiA gene, two of which were resistant to MEPM. Six of the 13 cfiA-positive B. fragilis isolates were heterogeneously resistant to MEPM. CONCLUSION It is important to evaluate the use of MEPM as empirical therapy for Bacteroides spp. infections, considering the emergence of carbapenem resistance during treatment, existence of MEPM-resistant strains, and heterogeneous resistance.
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Affiliation(s)
| | | | - Kosaku Komiya
- Department of Respiratory Medicine and Infectious Diseases, Oita University Faculty of Medicine, Japan
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Current Aspects of Pediatric Pharmacokinetics and Pharmacodynamics of Antimicrobials in Japan: Importance of the Promotion of Population PK/PD Analysis. Pediatr Infect Dis J 2022; 41:e418-e423. [PMID: 35763684 DOI: 10.1097/inf.0000000000003622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Pharmacologic knowledge is important for pediatricians conducting feasible pharmacokinetic or pharmacodynamic (PK/PD) studies or applying effective antimicrobial therapies in children. Because of the difficulties in conducting PK/PD studies in children, antimicrobial PK/PD data in children are still limited. To fill in the lack of knowledge, promotion of population PK/PD analysis, which allows us to handle sparse sampling data from individual patients, is important because it is considered a suitable methodology to conduct PK/PD studies in children with limited blood drug concentration data for PK/PD analysis. Population PK/PD analysis is also useful in the clinical setting to provide individualized optimal dosage for each patient with various conditions. Here we summarized the current aspects of pediatric PK/PD studies of antimicrobials in Japan from clinical and research perspectives, specifically focusing on the importance of population PK/PD analysis.
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Chi-square automatic interaction detector decision tree analysis model: Predicting cefmetazole response in intra-abdominal infection. J Infect Chemother 2022; 29:7-14. [PMID: 36089256 DOI: 10.1016/j.jiac.2022.09.002] [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: 05/30/2022] [Revised: 07/27/2022] [Accepted: 09/03/2022] [Indexed: 11/22/2022]
Abstract
BACKGROUND Cefmetazole is used as the first-line treatment for intra-abdominal infections. However, only a few studies have investigated the risk factors for cefmetazole treatment failure. AIMS This study aimed to develop a decision tree-based predictive model to assess the effectiveness of cefmetazole in initial intra-abdominal infection treatment to improve the clinical treatment strategies. METHODS This retrospective cohort study included adult patients who were unexpectedly hospitalized due to intra-abdominal infections between 2003 and 2020 and initially treated with cefmetazole. The primary outcome was clinical intra-abdominal infection improvement. The chi-square automatic interaction detector decision tree analysis was used to create a predictive model for clinical improvement after cefmetazole treatment. RESULTS Among 2,194 patients, 1,807 (82.4%) showed clinical improvement post-treatment; their mean age was 48.7 (standard deviation: 18.8) years, and 1,213 (55.3%) patients were men. The intra-abdomせinal infections were appendicitis (n = 1,186, 54.1%), diverticulitis (n = 334, 15.2%), and pancreatitis (n = 285, 13.0%). The chi-square automatic interaction detector decision tree analysis identified the intra-abdominal infection type, C-reactive protein level, heart rate, and body temperature as predictive factors by categorizing patients into seven groups. The area under the receiver operating characteristic curve was 0.71 (95% confidence interval: 0.68-0.73). CONCLUSION This predictive model is easily understandable visually and may be applied in clinical practice.
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Takayama Y, Komatsu T, Nakamura T, Tomoda Y, Toda M, Miura H, Sato T, Atsuda K, Okamoto H, Hanaki H. Association of serum and fat tissue antibiotic concentrations with surgical site infections in lower gastrointestinal surgery. Surgery 2022; 171:1000-1005. [PMID: 34772516 DOI: 10.1016/j.surg.2021.10.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 09/20/2021] [Accepted: 10/05/2021] [Indexed: 12/24/2022]
Abstract
BACKGROUND During surgery, the effectiveness of perioperative prophylactic antibiotic administration against surgical site infections is inferred from serum concentrations and not from tissues where local infections occur. This study aimed to measure the serum and tissue concentrations of cefmetazole in colorectal surgery cases to clarify whether there is an association between the incidence of surgical site infections and antibiotic concentrations. METHODS This prospective cohort study was performed at a single tertiary care center. The data of 105 patients who underwent colorectal surgery between October 2017 and September 2019 were evaluated. The primary outcome was the incidence of surgical site infections. Univariate analysis was performed to investigate the association between surgical site infections, perioperative factors, and the serum and tissue concentrations of cefmetazole. RESULTS The incidence of surgical site infections was 13/105 (12.4%). Cefmetazole concentrations were measured at initial incision (serum; 101 vs 93.1 mg/L, P = .75, subcutaneous fat tissue; 2.8 vs 3.7 mg/g, P = .15), intestinal resection (serum; 35.1 vs 36.7 mg/L, P = .63, mesenteric adipose tissue; 1.3 vs 1.7 mg/g, P = .55), and at skin closure (serum; 34.5 vs 44.8 mg/L, P = .18, subcutaneous fat tissue; 1.0 vs 2.2 mg/g, P = .09). In univariate analysis with P ≤ .10, cefmetazole concentration in subcutaneous fat tissue at skin closure was found to be a significant risk factor for surgical site infections. Age, additional intraoperative administration of cefmetazole, and creatinine clearance were also significant risk factors for the occurrence of surgical site infections. CONCLUSION Low subcutaneous fat cefmetazole concentrations at skin closure during gastrointestinal operations may also be involved in the occurrence of surgical site infections.
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Affiliation(s)
- Yoko Takayama
- Department of Infection Control and Infectious Diseases, Research and Development Center for New Medical Frontiers, Kitasato University School of Medicine, Kanagawa, Japan; Department of Infection Control and Prevention, Kitasato University Hospital, Kanagawa, Japan.
| | - Toshiaki Komatsu
- Department of Pharmacy, Kitasato University Hospital, Kanagawa, Japan
| | | | - Yoshinori Tomoda
- Laboratory of Clinical Pharmacokinetics, Research and Education Center for Clinical Pharmacy, Kitasato University School of Pharmacy, Kanagawa, Japan
| | - Masaya Toda
- Department of Anesthesiology, Kitasato University School of Medicine, Kanagawa, Japan
| | - Hirohisa Miura
- Department of Lower Gastrointestinal Surgery, Kitasato University School of Medicine, Kanagawa, Japan
| | - Takeo Sato
- Department of Lower Gastrointestinal Surgery, Kitasato University School of Medicine, Kanagawa, Japan
| | - Koichiro Atsuda
- Pharmacy Practice and Science I, Research and Education Center for Clinical Pharmacy, Kitasato University School of Pharmacy, Tokyo, Japan
| | - Hirotsugu Okamoto
- Department of Anesthesiology, Kitasato University School of Medicine, Kanagawa, Japan
| | - Hideaki Hanaki
- Omura Satoshi Memorial Institute, Kitasato University, Tokyo, Japan
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Antimicrobial susceptibility testing of anaerobic bacteria: In routine and research. Anaerobe 2022; 75:102559. [DOI: 10.1016/j.anaerobe.2022.102559] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Revised: 03/22/2022] [Accepted: 04/07/2022] [Indexed: 11/21/2022]
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Hamada Y, Kasai H, Suzuki-Ito M, Matsumura Y, Doi Y, Hayakawa K. Pharmacokinetic/Pharmacodynamic Analysis and Dose Optimization of Cefmetazole and Flomoxef against Extended-Spectrum β-Lactamase-Producing Enterobacterales in Patients with Invasive Urinary Tract Infection Considering Renal Function. Antibiotics (Basel) 2022; 11:antibiotics11040456. [PMID: 35453208 PMCID: PMC9027114 DOI: 10.3390/antibiotics11040456] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 03/24/2022] [Accepted: 03/25/2022] [Indexed: 11/16/2022] Open
Abstract
The optimal regimens of cefmetazole and flomoxef for the treatment of urinary tract infections caused by extended-spectrum β-lactamase (ESBL)-producing Enterobacterales are not well defined. Our study found that the pharmacokinetic/pharmacodynamic targets for cefmetazole and flomoxef were 70% T > MIC, which is suggestive of bactericidal activity. A Monte Carlo simulation (MCS) was performed using the published data to calculate a new probability of target attainment (PTA ≥ 90%) for each renal function. The MCS was performed with 1000 replicates, and clinical breakpoints were calculated to attain PTA ≥ 90% for creatinine clearance (CCR) of 10, 30, 50, and 70 mL/min. The 90% ≥ PTA (70% T > MIC) of cefmetazole and flomoxef in patients who received a standard regimen (0.5 or 1 g, 1 h injection) for each renal function was calculated. Our results suggest that in patients with CCR of less than 30, 31−59, and more than 60 mL/min, the optimal dosage of cefmetazole would be 1 g q12 h, 1 g q8 h, and 1 g q6 h, respectively. Furthermore, in patients with CCR of less than 10, 10−50, and more than 50 mL/min, the optimal dosage of flomoxef would be 1 g q24 h, 1 g q8 h or 12 h, and 1 g q6 h, respectively.
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Affiliation(s)
- Yukihiro Hamada
- Department of Pharmacy, Tokyo Women’s Medical University Hospital, Tokyo 162-8666, Japan;
- Correspondence:
| | - Hidefumi Kasai
- School of Medicine, Keio University, Tokyo 160-8582, Japan;
| | - Moeko Suzuki-Ito
- Department of Pharmacy, Tokyo Women’s Medical University Hospital, Tokyo 162-8666, Japan;
| | - Yasufumi Matsumura
- Department of Clinical Laboratory Medicine, Kyoto University Graduate School of Medicine, Kyoto 606-8507, Japan;
| | - Yohei Doi
- Center for Innovative Antimicrobial Therapy, Division of Infectious Diseases, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA;
- Department of Microbiology and Infectious Diseases, Fujita Health University School of Medicine, Aichi 470-1192, Japan
| | - Kayoko Hayakawa
- Disease Control and Prevention Center, National Center for Global Health and Medicine, Tokyo 162-8655, Japan;
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Clinical Practice Guidelines for Therapeutic Drug Monitoring of Vancomycin in the Framework of Model-Informed Precision Dosing: A Consensus Review by the Japanese Society of Chemotherapy and the Japanese Society of Therapeutic Drug Monitoring. Pharmaceutics 2022; 14:pharmaceutics14030489. [PMID: 35335866 PMCID: PMC8955715 DOI: 10.3390/pharmaceutics14030489] [Citation(s) in RCA: 47] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 02/16/2022] [Accepted: 02/17/2022] [Indexed: 01/08/2023] Open
Abstract
Background: To promote model-informed precision dosing (MIPD) for vancomycin (VCM), we developed statements for therapeutic drug monitoring (TDM). Methods: Ten clinical questions were selected. The committee conducted a systematic review and meta-analysis as well as clinical studies to establish recommendations for area under the concentration-time curve (AUC)-guided dosing. Results: AUC-guided dosing tended to more strongly decrease the risk of acute kidney injury (AKI) than trough-guided dosing, and a lower risk of treatment failure was demonstrated for higher AUC/minimum inhibitory concentration (MIC) ratios (cut-off of 400). Higher AUCs (cut-off of 600 μg·h/mL) significantly increased the risk of AKI. Although Bayesian estimation with two-point measurement was recommended, the trough concentration alone may be used in patients with mild infections in whom VCM was administered with q12h. To increase the concentration on days 1–2, the routine use of a loading dose is required. TDM on day 2 before steady state is reached should be considered to optimize the dose in patients with serious infections and a high risk of AKI. Conclusions: These VCM TDM guidelines provide recommendations based on MIPD to increase treatment response while preventing adverse effects.
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15
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Urano Y, Saito S, Machimoto T, Tsugihashi Y, Ishimaru H, Akebo H, Sada R. Differences in clinical and cost-effectiveness between cefmetazole and flomoxef for the prevention of surgical site infection in elective colorectal surgery: A single-center, retrospective cohort study. J Infect Chemother 2022; 28:510-515. [PMID: 35016825 DOI: 10.1016/j.jiac.2021.12.023] [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: 11/09/2021] [Revised: 12/13/2021] [Accepted: 12/17/2021] [Indexed: 11/29/2022]
Abstract
INTRODUCTION Surgical site infection (SSI) is associated with increased morbidity and mortality rates, postoperative length of stay (pLOS), and medical costs. In colorectal surgery, cefmetazole (CMZ) and flomoxef (FMOX) are predominantly used in Japan, and they have almost the same spectrum of antibiotic activity against SSI pathogens, and an approximately four-fold cost difference (CMZ: ∼4$, FMOX: ∼16$). However, the difference between these antibiotics in SSI prophylaxis in colorectal surgery remains poorly understood. METHODS We performed a single-center retrospective cohort study to investigate the prophylactic effects of these antibiotics, pLOS, and hospitalization costs. Patients who underwent elective colorectal surgery between April 2016 and March 2020 were considered for this study. RESULTS Of the 634 patients, 316 (49.8%) were eligible. The SSI rates in the CMZ and FMOX groups were 14.7% and 12.5%, respectively. The incidence of organ/space SSI was approximately two-fold lower in the CMZ group than in the FMOX group (4.4% vs. 9.4%). Multivariable regression analysis revealed that CMZ was not significantly related to SSI, with an adjusted odds ratio of 1.21 (95% confidence interval [CI]: 0.52-2.82) and did not induce a significant difference in pLOS (difference ratio: 0.951 [95% CI: 0.868-1.041]). Hospitalization costs were reduced in the CMZ group (difference ratio, 0.951 [95% CI: 0.907-0.998], p = 0.042). The sensitivity analysis also showed results similar to the above findings. CONCLUSION Our study showed that CMZ could be a cost-effective antibiotic with similar efficacy for SSI prophylaxis in colorectal surgery, compared with FMOX.
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Affiliation(s)
- Yuya Urano
- Department of General Internal Medicine, Tenri Hospital, Tenri, Japan
| | - Shunichi Saito
- Department of Gastrointestinal Surgery, Tenri Hospital, Tenri, Japan
| | | | | | - Hiroyasu Ishimaru
- Department of General Internal Medicine, Tenri Hospital, Tenri, Japan
| | - Hiroyuki Akebo
- Department of General Internal Medicine, Tenri Hospital, Tenri, Japan
| | - Ryuichi Sada
- Department of General Internal Medicine, Tenri Hospital, Tenri, Japan.
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Nakayama R, Inoue-Tsuda M, Matsui H, Ito T, Hanaki H. Classification of the metallo β-lactamase subtype produced by the carbapenem-resistant Pseudomonas aeruginosa isolates in Japan. J Infect Chemother 2021; 28:170-175. [PMID: 34863648 DOI: 10.1016/j.jiac.2021.04.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 03/08/2021] [Accepted: 04/04/2021] [Indexed: 10/19/2022]
Abstract
INTRODUCTION Multidrug resistant microorganisms are a serious threat to human health. Under the circumstances, a front line of antimicrobials in clinical setting may be carbapenem β-lactams (CRBP). However, emergence of CRBP resistant (CRBP-r) Gram-negative bacteria are the most alarming. CRBP-r is mainly caused to the production of β-lactamase, down and up expression of the diffusion channel and the efflux pump genes, respectively. Among them, production of metallo-β-lactamase (MBL) is a major cause of high-level of CRBP-r. METHOD We analyzed the MBL subtypes by PCR and DNA sequencing in CRBP-r Psudomonas aeruginosa in the collection of the joint program by the Japanese Association for Infectious Diseases, Japan Society for Clinical Microbiology and Japanese Society of Chemotherapy (2006-2015 in Japan). RESULTS Among 275 strains out of a total 1716 isolates, 23 (8.3%) were MBL-positive exhibiting resistant to meropenem (MEPM), imipenem, ceftazidime, cefepime, ciprofloxacin and levofloxacin without exception and the MIC of MEPM appeared over 128 μg/mL. Their MBL subtype analysis revealed that 16, 2, and 2 isolates were IMP-1, IMP-7 and VIM-2 positive, respectively, and one isolate each expressed either IMP-10, IMP-34 or IMP-41. CONCLUSIONS This study revealed that all the MBL-positive CRBP-r isolates were highly resistant to carbapenems dominating IMP-1 production.
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Affiliation(s)
- Ryo Nakayama
- Research Center for Infection Control, Ōmura Satoshi Memorial Institute, Kitasato University, Tokyo, Japan; External Innovation, Drug Research Division, Sumitomo Dainippon Pharma Co., Ltd, Japan
| | - Megumi Inoue-Tsuda
- Research Center for Infection Control, Ōmura Satoshi Memorial Institute, Kitasato University, Tokyo, Japan
| | - Hidehito Matsui
- Research Center for Infection Control, Ōmura Satoshi Memorial Institute, Kitasato University, Tokyo, Japan
| | - Tamaki Ito
- Research Center for Infection Control, Ōmura Satoshi Memorial Institute, Kitasato University, Tokyo, Japan
| | - Hideaki Hanaki
- Research Center for Infection Control, Ōmura Satoshi Memorial Institute, Kitasato University, Tokyo, Japan.
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Ichihara M, Ogino T, Fujii M, Haraguchi N, Takahashi H, Miyoshi N, Uemura M, Doki Y, Eguchi H, Mizushima T. Usefulness of Bacterial Culture of Drainage Fluid for Predicting Surgical Site Infection After Crohn’s Disease Surgery. Ann Gastroenterol Surg 2021; 6:375-385. [PMID: 35634186 PMCID: PMC9130903 DOI: 10.1002/ags3.12530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 10/16/2021] [Accepted: 11/13/2021] [Indexed: 11/10/2022] Open
Abstract
Aim Methods Results Conclusion
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Affiliation(s)
- Momoko Ichihara
- Department of Gastroenterological Surgery Osaka University Graduate School of Medicine Osaka Japan
| | - Takayuki Ogino
- Department of Gastroenterological Surgery Osaka University Graduate School of Medicine Osaka Japan
- Department of Therapeutics for Inflammatory Bowel Diseases Osaka University Graduate School of Medicine Osaka Japan
| | - Makoto Fujii
- Division of Health Science Osaka University Graduate School of Medicine Osaka Japan
| | - Naotsugu Haraguchi
- Department of Gastroenterological Surgery Osaka University Graduate School of Medicine Osaka Japan
| | - Hidekazu Takahashi
- Department of Gastroenterological Surgery Osaka University Graduate School of Medicine Osaka Japan
| | - Norikatsu Miyoshi
- Department of Gastroenterological Surgery Osaka University Graduate School of Medicine Osaka Japan
| | - Mamoru Uemura
- Department of Gastroenterological Surgery Osaka University Graduate School of Medicine Osaka Japan
| | - Yuichiro Doki
- Department of Gastroenterological Surgery Osaka University Graduate School of Medicine Osaka Japan
| | - Hidetoshi Eguchi
- Department of Gastroenterological Surgery Osaka University Graduate School of Medicine Osaka Japan
| | - Tsunekazu Mizushima
- Department of Gastroenterological Surgery Osaka University Graduate School of Medicine Osaka Japan
- Department of Therapeutics for Inflammatory Bowel Diseases Osaka University Graduate School of Medicine Osaka Japan
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Kawamoto Y, Kaku N, Akamatsu N, Sakamoto K, Kosai K, Morinaga Y, Ohmagari N, Izumikawa K, Yamamoto Y, Mikamo H, Kaku M, Oishi K, Yanagihara K. The surveillance of colistin resistance and mobilized colistin resistance genes in multidrug-resistant Enterobacteriaceae isolated in Japan. Int J Antimicrob Agents 2021; 59:106480. [PMID: 34801675 DOI: 10.1016/j.ijantimicag.2021.106480] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 11/03/2021] [Accepted: 11/12/2021] [Indexed: 11/27/2022]
Abstract
BACKGROUND The plasmid-mediated bacterial colistin-resistant gene, mcr, is of global concern in clinical healthcare. However, there are few reports of surveillance for mcr in Japan. The aim of this study was to assess the prevalence of colistin resistance by identifying nine mcr genes in extended-spectrum beta-lactamase (ESBL)-producing Enterobacteriaceae and carbapenem-resistant Enterobacteriaceae (CRE) isolates in Japan. METHODS A total of 273 ESBL and CRE clinical isolates were collected from patients in five tertiary hospitals from August 2016 to March 2017. Minimum inhibitory concentration (MIC) of colistin was measured using the microdilution method. Polymerase chain reaction (PCR) was performed to detect mcr-1 to mcr-9 genes in all strains. Whole-genome sequencing (WGS) analysis was conducted for any mcr-genes identified that had not been previously reported in patients from Japan. RESULTS The rate of colistin resistance was 7.7% in all strains, with a higher rate in the CRE strains than in the ESBL-producing strains (20.4% versus 1.1%). The mcr-5 and mcr-9 gene were detected in one ESBL-producing Escherichia coli strain (1/273, 0.37%) and three CRE strains (3/273, 1.1%), respectively. As the ESBL-producing E. coli strain was the first clinical strain with mcr-5 in Japan, WGS analysis was performed for the strain. The sequence type of the mcr-5-positive strain was ST1642 and it carried two distinct plasmids, ESBL gene-carrying pN-ES-6-1, and mcr-5.1-carrying pN-ES-6-2. CONCLUSIONS The results of this study showed that the frequency of colistin resistance and mcr-positive strains is not high in Japan. As the MIC for colistin was low in the mcr-5.1 and mcr-9 gene-positive strain, continuous monitoring of mcr genes is necessary.
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Affiliation(s)
- Yasuhide Kawamoto
- Department of Laboratory Medicine, Nagasaki University Hospital, Japan
| | - Norihito Kaku
- Department of Laboratory Medicine, Nagasaki University Hospital, Japan; Department of Laboratory Medicine, Nagasaki University Graduate School of Biomedical Sciences, Japan; Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan, USA.
| | - Norihiko Akamatsu
- Department of Laboratory Medicine, Nagasaki University Hospital, Japan
| | - Kei Sakamoto
- Department of Laboratory Medicine, Nagasaki University Hospital, Japan; Department of Laboratory Medicine, Nagasaki University Graduate School of Biomedical Sciences, Japan
| | - Kosuke Kosai
- Department of Laboratory Medicine, Nagasaki University Hospital, Japan; Department of Laboratory Medicine, Nagasaki University Graduate School of Biomedical Sciences, Japan
| | - Yoshitomo Morinaga
- Department of Laboratory Medicine, Nagasaki University Hospital, Japan; Department of Laboratory Medicine, Nagasaki University Graduate School of Biomedical Sciences, Japan; Department of Microbiology, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama
| | - Norio Ohmagari
- Disease Control and Prevention Center, National Center for Global Health and Medicine, Japan
| | - Koichi Izumikawa
- Department of Infectious Diseases, Nagasaki University Graduate School of Biomedical Sciences, Japan
| | - Yoshihiro Yamamoto
- Department of Clinical Infectious Diseases, Graduate School of Medicine and Pharmaceutical Sciences for Research, University of Toyama, Japan
| | - Hiroshige Mikamo
- Department of Clinical Infectious Diseases, Aichi Medical University Graduate School of Medicine, Japan
| | - Mitsuo Kaku
- Department of Infection Control and Laboratory Diagnostics, Tohoku University Graduate School of Medicine, Japan
| | - Kazunori Oishi
- Infectious Disease Surveillance Center, National Institute of Infectious Diseases Correspondence, Japan; Toyama Institute of Health, Japan
| | - Katsunori Yanagihara
- Department of Laboratory Medicine, Nagasaki University Hospital, Japan; Department of Laboratory Medicine, Nagasaki University Graduate School of Biomedical Sciences, Japan
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Rapid detection and surveillance of cfiA-positive Bacteroides fragilis using matrix-assisted laser desorption ionization time-of-flight mass spectrometry. Anaerobe 2021; 72:102448. [PMID: 34537378 DOI: 10.1016/j.anaerobe.2021.102448] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 08/10/2021] [Accepted: 09/14/2021] [Indexed: 11/21/2022]
Abstract
OBJECTIVES To perform surveillance of cfiA-positive Bacteroides fragilis using new subtyping software module, MALDI Biotyper Subtyping Module (MBT Subtyping Module), on MALDI-TOF MS system, and to evaluate the detection ability of the module. METHODS cfiA-positive strains were presumed using the module against B. fragilis isolated between 2006 and 2019. The cfiA gene was confirmed using PCR. In cfiA-positive B. fragilis, the insertion sequence (IS) elements were examined and the MBT STAR-BL assay was performed to examine meropenem hydrolysis activity. RESULTS Of the 396 B. fragilis strains included, the MBT Subtyping Module detected 33 presumptive cfiA-positive strains (8.3%), of which 32 harbored the cfiA gene. The sensitivity and specificity of the MBT Subtyping Module for detecting cfiA-positive B. fragilis were 100.0% and 99.7%, respectively. Of the 32 strains harboring the cfiA gene, seven strains possessed IS elements, which were thought to induce high cfiA expression. Meropenem hydrolysis was detected in all seven strains that were positive for both cfiA and IS elements, and they exhibited resistance to meropenem and imipenem. The overall non-susceptibility rates to meropenem and imipenem were 84.8% and 36.4%, respectively, in the 33 presumptive cfiA-positive strains. CONCLUSION The MBT Subtyping Module can detect cfiA-positive B. fragilis rapidly and accurately, supporting its use for surveillance of cfiA-positive B. fragilis in clinical settings.
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Sood A, Angrup A, Ray P, Bala K. Comparative evaluation of agar dilution and broth microdilution by commercial and in-house plates for Bacteroides fragilis group: An economical and expeditious approach for resource-limited settings. Anaerobe 2021; 71:102443. [PMID: 34492368 DOI: 10.1016/j.anaerobe.2021.102443] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Revised: 08/10/2021] [Accepted: 09/03/2021] [Indexed: 10/20/2022]
Abstract
OBJECTIVE To compare the performance of agar dilution and broth microdilution by commercial and in-house prepared plates for the Bacteroides fragilis group. The cost analysis was performed to demonstrate that in-house prepared BMD plates were a suitable alternative to agar dilution given the high cost and low feasibility of incorporating commercial BMD plates in routine, particularly in the tertiary care institutes of many low- and middle-income countries. METHODS Thirty B. fragilis group isolates were tested against six antibiotics, frequently used as empirical therapy for anaerobic infections including metronidazole, clindamycin, imipenem, piperacillin-tazobactam, cefoxitin, and chloramphenicol. The running consumable expenditure for all methodologies was calculated. RESULTS The results demonstrated essential and categorical agreement of >90% for all antibiotics except cefoxitin, which showed <90% categorical agreement. No major or very major errors were observed. We observed a high agreement and strong concordance for MIC values between both methods and inter-rate reliability of >0.9 by Cohen's kappa analysis, indicating almost perfect agreement between both methods using either of the plates. In contrast to agar dilution, a 20.5 fold cost reduction was seen in BMD using in-house plates and a 5.8 fold reduction using commercial plates to test a single isolate. However, when testing 30 isolates concurrently the cost significantly increased for commercial BMD plates by 8.4 folds, and only 1.03 fold cost reduction was seen with in-house BMD plates. CONCLUSION BMD gives comparable results to agar dilution and can be considered a method of choice to test a small number of samples. The technique is an economical option when plates are standardized in-house and could be employed for susceptibility testing of the B. fragilis group.
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Affiliation(s)
- Anshul Sood
- Department of Medical Microbiology, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, 160012, India.
| | - Archana Angrup
- Department of Medical Microbiology, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, 160012, India.
| | - Pallab Ray
- Department of Medical Microbiology, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, 160012, India.
| | - Kiran Bala
- Department of Medical Microbiology, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, 160012, India.
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21
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Prevalence of Extended Spectrum Beta-Lactamase Producing Gram-Negative Bacilli causing Surgical Site Infections in a Tertiary Care Centre. JOURNAL OF PURE AND APPLIED MICROBIOLOGY 2021. [DOI: 10.22207/jpam.15.3.06] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Hospital-acquired infections (HAIs) are continuing to be a major risk in health care settings. World Health Organization (WHO) describes surgical site infections (SSIs) as one among the major health issue, causing enormous burden to both patients as well as doctors. Multidrug-resistant pathogens that cause SSIs continue to be an ongoing and increasing challenge to health care settings. The objective of the present study was to know the prevalence of extended-spectrum beta-lactamase (ESBL) producing gram-negative bacilli causing SSIs at a tertiary healthcare facility. The present cross-sectional observational study was done for a period of one year. Pus samples from clinically suspected cases of SSIs were collected and subjected to bacterial culture and sensitivity testing. From the total of 140 samples collected, a total of 138 bacterial isolates were isolated. Out of 138 isolates, 85 isolates (61.6%) were identified as gram-negative bacilli of which 33 isolates (38.8%) were identified to be ESBL phenotypes. Majority of the ESBL phenotypes were Escherichia coli (25.9%) followed by Klebsiella pneumoniae (7%), Acinetobacter species (2.4%), Pseudomonas aeruginosa (2.4%) and Proteus species (1.2%). Regular surveillance of antibiotic sensitivity pattern and screening for beta-lactamase production should be done which helps to know the trends of pathogenic bacteria causing SSI and guides in planning antibiotic therapy.
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22
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Darlow CA, da Costa RMA, Ellis S, Franceschi F, Sharland M, Piddock L, Das S, Hope W. Potential Antibiotics for the Treatment of Neonatal Sepsis Caused by Multidrug-Resistant Bacteria. Paediatr Drugs 2021; 23:465-484. [PMID: 34435316 PMCID: PMC8418595 DOI: 10.1007/s40272-021-00465-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/04/2021] [Indexed: 01/26/2023]
Abstract
Neonatal sepsis causes up to an estimated 680,000 deaths annually worldwide, predominantly in low- and middle-income countries (LMICs). A significant and growing proportion of bacteria causing neonatal sepsis are resistant to multiple antibiotics, including the World Health Organization-recommended empiric neonatal sepsis regimen of ampicillin/gentamicin. The Global Antibiotic Research and Development Partnership is aiming to develop alternative empiric antibiotic regimens that fulfil several criteria: (1) affordable in LMIC settings; (2) activity against neonatal bacterial pathogens, including extended-spectrum β-lactamase producers, gentamicin-resistant Gram-negative bacteria, and methicillin-resistant Staphylococcus aureus (MRSA); (3) a licence for neonatal use or extensive experience of use in neonates; and (4) minimal toxicities. In this review, we identify five antibiotics that fulfil these criteria: amikacin, tobramycin, fosfomycin, flomoxef, and cefepime. We describe the available characteristics of each in terms of mechanism of action, resistance mechanisms, clinical pharmacokinetics, pharmacodynamics, and toxicity profile. We also identify some knowledge gaps: (1) the neonatal pharmacokinetics of cefepime is reliant on relatively small and limited datasets, and the pharmacokinetics of flomoxef are also reliant on data from a limited demographic range and (2) for all reviewed agents, the pharmacodynamic index and target has not been definitively established for both bactericidal effect and emergence of resistance, with many assumed to have an identical index/target to similar class molecules. These five agents have the potential to be used in novel combination empiric regimens for neonatal sepsis. However, the data gaps need addressing by pharmacokinetic trials and pharmacodynamic characterisation.
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Affiliation(s)
- Christopher A Darlow
- Antimicrobial Pharmacodynamics and Therapeutics, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool Health Partners, William Henry Duncan Building, 6 West Derby Street, Liverpool, L7 8TX, UK.
| | | | - Sally Ellis
- Global Antibiotic Research and Development Partnership, Geneva, Switzerland
| | | | - Mike Sharland
- Paediatric Infectious Diseases Research Group, St George's University of London, London, UK
| | - Laura Piddock
- Global Antibiotic Research and Development Partnership, Geneva, Switzerland
- Antimicrobials Research Group, Institute for Microbiology and Infection, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham, UK
| | - Shampa Das
- Antimicrobial Pharmacodynamics and Therapeutics, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool Health Partners, William Henry Duncan Building, 6 West Derby Street, Liverpool, L7 8TX, UK
| | - William Hope
- Antimicrobial Pharmacodynamics and Therapeutics, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool Health Partners, William Henry Duncan Building, 6 West Derby Street, Liverpool, L7 8TX, UK
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Mohamed AH, Mohamud HA, Arslan E. Epidemiological Characteristics and Predisposing Factors for Surgical Site Infections Caused by Bacterial Pathogens Exhibiting Multidrug-Resistant Patterns. Antibiotics (Basel) 2021; 10:antibiotics10060622. [PMID: 34073667 PMCID: PMC8225124 DOI: 10.3390/antibiotics10060622] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 05/16/2021] [Accepted: 05/19/2021] [Indexed: 11/16/2022] Open
Abstract
Background: Surgical site infection is the most common kind of nosocomial infection in developed and developing countries. Objectives: Our aim was to identify the prevalence of factors predisposing to multidrug resistance and the antimicrobial susceptibility profile of pathogens. Method: This retrospective study enrolled 10,878 patients who underwent operations in 2018–2020. Pathogens were identified using eosin methylene blue agar. Mueller–Hinton agar was used to assess antimicrobial sensitivity and resistance. In total, 382 patients with confirmed surgical site infection (SSI), whose culture showed growth, were included in the study. Results: The prevalence of SSI in the current study was 3.5%. Escherichia coli was the predominant pathogen (35.8%), followed by Staphylococcus aureus (21.8%). Antibiotic use, chronic renal failure, diabetes, and emergency operations were found to increase the likelihood of multidrug resistance (OR = 6.23, CI = 1.443–26.881, p = 0.014; OR = 5.67, CI = 1.837–19.64, p = 0.02; OR = 2.54, CI = 1.46–7.35, p = 0.03; OR = 1.885, CI = 1.067–3.332, p = 0.002, respectively). The pathogens showed different levels of antimicrobial resistance against ceftriaxone (72.7%), ciprofloxacin (46.6%), and gentamicin (34%). Antimicrobial resistance of about 1–3.4% was exhibited by linezolid, tigecycline, and teicoplanin. Conclusion: The study presented significantly increased multidrug-resistant (MDR) Enterobacteriaceae pathogens isolated from surgical sites. They involve significant morbidity and mortality rates and increased health-related costs.
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Majewska A, Kierzkowska M, Kawecki D. What we actually know about the pathogenicity of Bacteroides pyogenes. Med Microbiol Immunol 2021; 210:157-163. [PMID: 33934237 PMCID: PMC8137477 DOI: 10.1007/s00430-021-00709-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 04/18/2021] [Indexed: 11/26/2022]
Abstract
The aim of the study was to evaluate the pathogenic potential of Bacteroides pyogenes, rarely identified in clinical laboratories anaerobic bacteria. To increase the knowledge about this poorly understood anaerobic microorganism, the study also includes cases of infections described so far in the literature. Only the use of 16S rRNA sequencing and mass spectrometry technique allowed the identification of B. pyogenes from clinical specimens. We reported 13 severe human infections caused by B. pyogenes. Bacteria were cultured from the wound after biting by animals, chronic infections within the oral cavity, from patients with histologically or radiological proven osteomyelitis, surgical site infection, and from urine sample collected after a urological procedure. Most (9/13) of the patients required hospitalization. Almost 70% of them needed urgent admission via the emergency room. Two inpatients due to a life-threatening condition were admitted to the intensive care unit. Almost 50% of isolates were resistant to penicillin. All resistant to penicillin strains were isolated from skin and mucous membrane infections.
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Affiliation(s)
- Anna Majewska
- Department of Medical Microbiology, Medical University of Warsaw, Chalubinskiego 5 Str, 02-004, Warsaw, Poland.
| | - Marta Kierzkowska
- Department of Medical Microbiology, Medical University of Warsaw, Chalubinskiego 5 Str, 02-004, Warsaw, Poland
| | - Dariusz Kawecki
- Department of Medical Microbiology, Medical University of Warsaw, Chalubinskiego 5 Str, 02-004, Warsaw, Poland
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Ueda T, Takesue Y, Matsumoto T, Tateda K, Kusachi S, Mikamo H, Sato J, Hanaki H, Mizuguchi T, Morikane K, Kobayashi M, Harihara Y, Seki S, Ishida Y, Fukushima R, Hada M, Matsuo Y, Kubo S, Kimura Y, Hata H, Nakajima K, Ohge H, Akagi S, Takeda S, Fukui Y, Suzuki K, Okamoto K, Yanagihara K, Kawamura H. Change in antimicrobial susceptibility of pathogens isolated from surgical site infections over the past decade in Japanese nation-wide surveillance study. J Infect Chemother 2021; 27:931-939. [PMID: 33795192 DOI: 10.1016/j.jiac.2021.03.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 02/01/2021] [Accepted: 03/11/2021] [Indexed: 12/24/2022]
Abstract
Inappropriate antimicrobial therapy for surgical site infections (SSIs) can lead to poor outcomes and an increased risk of antibiotic resistance. A nationwide survey was conducted in Japan from 2018 to 2019 to investigate the antimicrobial susceptibility of pathogens isolated from SSIs. The data were compared with those obtained in 2010 and 2014-2015 surveillance studies. Although the rate of detection of extended-spectrum β-lactamase producing strains of Escherichia coli was increased from 9.5% in 2010 to 23% in 2014-2015, the incidence decreased to 8.7% in 2018-2019. Although high susceptibility rates were detected to piperacillin/tazobactam (TAZ), the geometric mean MICs were substantially higher than to meropenem (2.67 vs 0.08 μg/mL). By contrast, relatively low geometric mean MICs (0.397 μg/mL) were demonstrated for ceftolozane/TAZ. Although the MRSA incidence rate decreased from 72% in the first surveillance to 53% in the second, no further decrease was detected in 2018-2019. For the Bacteroides fragilis group species, low levels of susceptibility were observed for moxifloxacin (65.3%), cefoxitin (65.3%), and clindamycin (CLDM) (38.9%). In particular, low susceptibility against cefoxitin was demonstrated in non-fragilis Bacteroides, especially B. thetaiotaomicron. By contrast, low susceptibility rates against CLDM were demonstrated in both B. fragilis and non-fragilis Bacteroides species, and a steady decrease in susceptibility throughout was observed (59.3% in 2010, 46.9% in 2014-2015, and 38.9% in 2018-2019). In conclusion, Japanese surveillance data revealed no significant lowering of antibiotic susceptibility over the past decade in organisms commonly associated from SSIs, with the exception of the B. fragilis group.
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Affiliation(s)
- Takashi Ueda
- Department of Infection Control and Prevention, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan.
| | - Yoshio Takesue
- The Surveillance Committee of Japanese Society of Cemotherapy (JSC), The Japanese Association for Infectious Disease (JAID) and the Japanese Society for Clinical Microbiology (JSCM), Tokyo, Japan; Department of Infection Control and Prevention, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
| | - Tetsuya Matsumoto
- The Surveillance Committee of Japanese Society of Cemotherapy (JSC), The Japanese Association for Infectious Disease (JAID) and the Japanese Society for Clinical Microbiology (JSCM), Tokyo, Japan
| | - Kazuhiro Tateda
- The Surveillance Committee of Japanese Society of Cemotherapy (JSC), The Japanese Association for Infectious Disease (JAID) and the Japanese Society for Clinical Microbiology (JSCM), Tokyo, Japan
| | - Shinya Kusachi
- The Surveillance Committee of Japanese Society of Cemotherapy (JSC), The Japanese Association for Infectious Disease (JAID) and the Japanese Society for Clinical Microbiology (JSCM), Tokyo, Japan
| | - Hiroshige Mikamo
- The Surveillance Committee of Japanese Society of Cemotherapy (JSC), The Japanese Association for Infectious Disease (JAID) and the Japanese Society for Clinical Microbiology (JSCM), Tokyo, Japan; Department of Clinical Infectious Diseases, Aichi Medical University, Aichi, Japan
| | - Junko Sato
- The Surveillance Committee of Japanese Society of Cemotherapy (JSC), The Japanese Association for Infectious Disease (JAID) and the Japanese Society for Clinical Microbiology (JSCM), Tokyo, Japan
| | - Hideaki Hanaki
- Infection Control Research Center, Kitasato University, Tokyo, Japan
| | - Toru Mizuguchi
- Department of Nursing, Surgical Science, Sapporo Medical University, Hokkaido Japan
| | - Keita Morikane
- Division of Clinical Laboratory and Infection Control, Yamagata University Hospital, Yamagata, Japan
| | | | | | - Shiko Seki
- Department of Surgery, National Hospital Organization Tokyo Medical Center, Tokyo, Japan
| | - Yuichi Ishida
- Department of Surgery, The Jikei University School of Medicine, Tokyo, Japan
| | - Ryoji Fukushima
- Department of Surgery, Teikyo University Hospital, Tokyo, Japan
| | - Masahiro Hada
- Department of Surgery, Kouseiren Takaoka Hospital, Toyama, Japan
| | - Yoichi Matsuo
- Department of Gastroenterological Surgery, Nagoya City University Graduate School of Medical Sciences, Aichi, Japan
| | - Shoji Kubo
- Department of Hepato-Biliary-Pancreatic Surgery, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Yutaka Kimura
- Department of Surgery, Kindai University Hospital, Osaka, Japan
| | - Hiroaki Hata
- Department of Surgery, National Hospital Organization Kyoto Medical Center, Kyoto, Japan
| | - Kazuhiko Nakajima
- Department of Infection Control and Prevention, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
| | - Hiroki Ohge
- Department of Infectious Diseases, Hiroshima University Hospital, Hiroshima, Japan
| | - Shinji Akagi
- Department of Surgery, Mazda Hospital, Mazda Motor Corporation, Hiroshima, Japan
| | - Shigeru Takeda
- Department of Gastroenterological, Breast and Endocrine Surgery, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan
| | - Yasuo Fukui
- Department of Surgery, Kochi Health Sciences Center, Kochi, Japan
| | - Katsunori Suzuki
- University of Occupational and Environmental Health Japan, Fukuoka, Japan
| | - Kohji Okamoto
- Department of Surgery, Gastroenterology and Hepatology Center, Kitakyushu City Yahata Hospital, Fukuoka, Japan
| | | | - Hideki Kawamura
- Department of Infection Control and Prevention, Kagoshima University Hospital, Kagoshima, Japan
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Hanai Y, Takahashi Y, Niwa T, Mayumi T, Hamada Y, Kimura T, Matsumoto K, Fujii S, Takesue Y. Optimal trough concentration of teicoplanin for the treatment of methicillin-resistant Staphylococcus aureus infection: A systematic review and meta-analysis. J Clin Pharm Ther 2021; 46:622-632. [PMID: 33547647 DOI: 10.1111/jcpt.13366] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 12/26/2020] [Accepted: 01/19/2021] [Indexed: 12/24/2022]
Abstract
WHAT IS KNOWN AND OBJECTIVE It has been recommended that the trough concentration (Cmin ) of teicoplanin should be maintained at ≥20 μg/ml for difficult-to-treat complicated infections caused by methicillin-resistant Staphylococcus aureus (MRSA). Conversely, Cmin of teicoplanin of at least 10 μg/ml is required for non-complicated MRSA infections. Considering the low incidence of nephrotoxicity for teicoplanin, Cmin = 15-30 μg/ml has been suggested for most MRSA infections. Thus, we assessed the clinical efficacy and adverse effects of teicoplanin at this target Cmin . METHODS We searched electronic databases (PubMed, Cochrane Central Register of Controlled Trials and Ichushi-Web) to identify eligible studies. Studies were included if they provided the incidence of treatment success, mortality in patients with MRSA infection, and/or hepatotoxicity and nephrotoxicity according to the Cmin range. RESULTS AND DISCUSSION Four trials assessing clinical success (n = 299) and three studies assessing adverse effects (n = 546) were included. Cmin = 15-30 μg/ml significantly increased the probability of treatment success compared with Cmin < 15 μg/ml (odds ratio [OR] = 2.68, 95% confidence interval [CI] = 1.14-6.32, p = 0.02). The all-cause mortality rate did not differ between the groups (OR = 0.46, 95% CI = 0.13-1.61, p = 0.22). Cmin = 15-30 μg/ml did not increase the risks of nephrotoxicity (OR = 0.91, 95% CI = 0.49-1.69, p = 0.76) or hepatotoxicity (OR = 0.67, 95% CI = 0.18-2.44, p = 0.54). WHAT IS NEW AND CONCLUSION Teicoplanin therapy using a Cmin target of 15-30 μg/ml is likely to be associated with better clinical responses than Cmin < 15 μg/ml without increasing the risk of adverse effects.
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Affiliation(s)
- Yuki Hanai
- Department of Pharmacy, Toho University Omori Medical Center, Tokyo, Japan
| | - Yoshiko Takahashi
- Department of Pharmacy, Hyogo College of Medicine, Nishinomiya, Japan
| | - Takashi Niwa
- Department of Pharmacy, Gifu University Hospital, Gifu, Japan
| | - Toshihiko Mayumi
- Department of Emergency Medicine, School of Medicine, University of Occupational and Environmental Health, Fukuoka, Japan
| | - Yukihiro Hamada
- Department of Pharmacy, Tokyo Women's Medical University Hospital, Tokyo, Japan
| | - Toshimi Kimura
- Department of Pharmacy, Tokyo Women's Medical University Hospital, Tokyo, Japan
| | - Kazuaki Matsumoto
- Division of Pharmacodynamics, Faculty of Pharmacy, Keio University, Tokyo, Japan
| | - Satoshi Fujii
- Department of Hospital Pharmacy, Sapporo Medical University Hospital, Hokkaido, Japan
| | - Yoshio Takesue
- Department of Infection Control and Prevention, Hyogo College of Medicine, Nishinomiya, Japan
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Fukuda H, Sato D, Iwamoto T, Yamada K, Matsushita K. Healthcare resources attributable to methicillin-resistant Staphylococcus aureus orthopedic surgical site infections. Sci Rep 2020; 10:17059. [PMID: 33051484 PMCID: PMC7555535 DOI: 10.1038/s41598-020-74070-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 09/21/2020] [Indexed: 01/16/2023] Open
Abstract
The number of orthopedic surgeries is increasing as populations steadily age, but surgical site infection (SSI) rates remain relatively consistent. This study aimed to quantify the healthcare resources attributable to methicillin-resistant Staphylococcus aureus (MRSA) SSIs in orthopedic surgical patients. The analysis was conducted using a national claims database comprising data from almost all Japanese residents. We examined patients who underwent any of the following surgeries between April 2012 and March 2018: amputation (AMP), spinal fusion (FUSN), open reduction of fracture (FX), hip prosthesis (HPRO), knee prosthesis (KPRO), and laminectomy (LAM). Propensity score matching was performed to identify non-SSI control patients, and generalized estimating equations were used to estimate the differences in outcomes between the case and control groups. The numbers of MRSA SSI cases (infection rates) ranged from 64 (0.03%) to 1,152 (2.33%). MRSA SSI-attributable increases in healthcare expenditure ranged from $11,630 ($21,151 vs. $9,521) for LAM to $35,693 ($50,122 vs. $14,429) for FX, and increases in hospital stay ranged from 40.6 days (59.2 vs. 18.6) for LAM to 89.5 days (122.0 vs. 32.5) for FX. In conclusion, MRSA SSIs contribute to substantial increases in healthcare resource utilization, emphasizing the need to implement effective infection prevention measures for orthopedic surgeries.
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Affiliation(s)
- Haruhisa Fukuda
- Department of Health Care Administration and Management, Kyushu University Graduate School of Medical Sciences, 3-1-1 Maidashi Higashi-ku, Fukuoka, 812-8582, Japan.
| | - Daisuke Sato
- Center for Next Generation of Community Health, Chiba University Hospital, Chiba, Japan
| | | | - Koji Yamada
- Department of Orthopaedic Surgery, Kanto Rosai Hospital, Kanagawa, Japan
| | - Kazuhiko Matsushita
- Department of Orthopaedic Surgery, Kawasaki Municipal Tama Hospital, Kanagawa, Japan
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Antimicrobial susceptibility and prevalence of resistance genes in Bacteroides fragilis isolated from blood culture bottles in two tertiary care hospitals in Japan. Anaerobe 2020; 64:102215. [PMID: 32574601 DOI: 10.1016/j.anaerobe.2020.102215] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Revised: 05/14/2020] [Accepted: 05/15/2020] [Indexed: 02/06/2023]
Abstract
The in vitro susceptibilities of Bacteroides fragilis to antimicrobial agents, especially to carbapenem, are a major concern in the treatment of patients with bloodstream infections. In this study, 50 isolates of B. fragilis were obtained from positive blood bottles from 2014 to 2019 in Saitama, Japan. Their susceptibility to ampicillin/sulbactam was reduced to 70.0% compared with a previous report, whereas they were still sufficiently susceptible to piperacillin/tazobactam (94.0%). Five cfiA-positive isolates (5/50, 10.0%) were identified that were resistant to doripenem and meropenem, and two of them carried an insertion sequence located upstream of the cfiA-coding region. In particular, imipenem should be considered as a first-line carbapenem for the empirical treatment of B. fragilis infection because only insertion sequence and cfiA double-positive strains showed resistance to imipenem. Thirty-six percent of the isolates had a reduced minimum inhibitory concentration for moxifloxacin. In addition, metronidazole should still be considered as an active agent for B. fragilis because all isolates were susceptible to this antibiotic and the prevalence of the nim gene was low in Japan.
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Bhardwaj N, Khurana S, Kumari M, Malhotra R, Mathur P. Pattern of antimicrobial resistance of Gram-negative bacilli in surgical site infections in in-patients and out-patients at an apex trauma Center: 2013-2016. J Lab Physicians 2020; 10:432-436. [PMID: 30498317 PMCID: PMC6210838 DOI: 10.4103/jlp.jlp_80_18] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
INTRODUCTION: Antimicrobial resistance is an increasing problem worldwide especially among the surgical site infections (SSIs). SSI is becoming more serious due to hospital-acquired infections/nosocomial infections, which further leads to the overuse of broad-spectrum antibiotics. To investigate the antimicrobial resistance patterns among Gram-negative bacteria in SSI in in- and out-patients the present study was designed. METHODOLOGY: During the 4 years (January 2013–December 2016), the antimicrobial resistant pattern was studied in the admitted patients and in the patients who were followed up to the outpatients department (OPD) after discharge. Antimicrobial resistance pattern testing was done by the disk diffusion method on Mueller-Hinton agar and by E-test for ten antibiotics according to The Clinical and Laboratory Standards Institute guidelines for Gram-negative bacilli. RESULTS: A total of 2,447 strains were isolated from the studied population on over the period of 4 years. Of 2447, 1996 (81%) were isolated from patients who had SSI during the hospital stay, and 451 (18%) were from patients who attended the OPD after discharge. In the outpatients, who followed up in the OPD for the SSI, Escherichia coli (148), and Pseudomonas aeruginosa (93), whereas in the patients who develop SSI during their hospital stay, Acinetobacter baumannii (622), E. coli (424), and Klebsiella pneumoniae (315) were found to be common. A very high resistance pattern was observed in both the studied groups; however, a higher resistance pattern was seen in in-patients as compared to outpatients. CONCLUSION: In our study, we have reported resistance pattern in Gram-negative bacteria isolated from the patients who were came for the follow as well as in the inpatients. For the outpatients, it can be concluded that it could be a community-acquired infection which is also an alarming condition for our society.
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Affiliation(s)
- Nidhi Bhardwaj
- Department of Laboratory Medicine, Jai Prakash Narayan Apex Trauma Centre, All India Institute of Medical Sciences, New Delhi, India
| | - Surbhi Khurana
- Department of Laboratory Medicine, Jai Prakash Narayan Apex Trauma Centre, All India Institute of Medical Sciences, New Delhi, India
| | - Minu Kumari
- Department of Surgery, Jai Prakash Narayan Apex Trauma Centre, All India Institute of Medical Sciences, New Delhi, India
| | - Rajesh Malhotra
- Department of Orthopedics, All India Institute of Medical Sciences, New Delhi, India
| | - Purva Mathur
- Department of Laboratory Medicine, Jai Prakash Narayan Apex Trauma Centre, All India Institute of Medical Sciences, New Delhi, India
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The third national Japanese antimicrobial susceptibility pattern surveillance program: Bacterial isolates from complicated urinary tract infection patients. J Infect Chemother 2020; 26:418-428. [PMID: 32081647 DOI: 10.1016/j.jiac.2020.01.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 01/08/2020] [Accepted: 01/21/2020] [Indexed: 11/23/2022]
Abstract
The antimicrobial susceptibility patterns of bacterial pathogens isolated from patients with complicated urinary tract infections were analyzed using national surveillance data. The data consisted of 881 bacterial strains from eight clinically relevant species. The data were collected for the third national surveillance project from January 2015 to March 2016 by the Japanese Society of Chemotherapy, the Japanese Association for Infectious Disease, and the Japanese Society of Clinical Microbiology. Surveillance was undertaken with the cooperation of 41 medical institutions throughout Japan. Fluoroquinolone required a MIC90 of 2-64 mg/L to inhibit the 325 Escherichia coli strains tested and the proportion of levofloxacin resistant E. coli strains increased to 38.5% from 29.6% in 2011 and 28.6% in 2008. The proportion of levofloxacin resistant strains of Pseudomonas aeruginosa and Enterococcus faecalis decreased from previous reports and the proportion of multidrug-resistant P. aeruginosa and carbapenem-resistant Enterobacteriaceae remained low. Among methicillin-resistant Staphylococcus aureus (MRSA) strains, strains with reduced susceptibility to vancomycin (minimum inhibitory concentration, 2 μg/mL) increased to 14.7% from 5.5%. Bacterial strains that produced extended-spectrum β-lactamase included E. coli (79 of 325 strains, 24.3%), Klebsiella pneumoniae (9 of 177 strains, 7.7%), and Proteus mirabilis (6 of 55 strains, 10.9%). The proportion of extended-spectrum β-lactamase producing E. coli and K. pneumoniae strains increased from previous surveillance reports.
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Wekesa YN, Namusoke F, Sekikubo M, Mango DW, Bwanga F. Ceftriaxone- and ceftazidime-resistant Klebsiella species, Escherichia coli, and methicillin-resistant Staphylococcus aureus dominate caesarean surgical site infections at Mulago Hospital, Kampala, Uganda. SAGE Open Med 2020; 8:2050312120970719. [PMID: 35154757 PMCID: PMC8826261 DOI: 10.1177/2050312120970719] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Accepted: 10/13/2020] [Indexed: 12/04/2022] Open
Abstract
Objectives: The aim of this study was to determine the proportion and mechanism of resistance to ceftriaxone and ceftazidime among Klebsiella species and Escherichia coli and examine the burden of methicillin-resistant Staphylococcus aureus from caesarean section surgical site infections in Uganda. Methods: Wound swabs from 109 caesarean section surgical site infections were cultured for pathogenic bacteria following standard microbiological procedures. The Kirby–Bauer disc diffusion technique was used for antimicrobial susceptibility testing. Methicillin-resistant S. aureus diagnosis was based on polymerase chain reaction testing for the mecA gene. Data were analysed using SPSS-IBM Statistics v.20. Results: A total of 118 pathogens were recovered from 93 (85%) of 109 surgical site infections swabs. Of the 118 pathogens, gram-negative bacteria were 69 (58.5%), including 44 (37.3%) Klebsiella species, 11 (9.3%) E. coli, 6 (5.1%) Citrobacter species, and 8 (6.8%) other gram-negative bacteria. In total, 49 of the 118 pathogens were gram-positive bacteria, including 34 (28.8%) S. aureus and 15 (12.7%) Enterococci species. Resistance to ceftriaxone was detected in all 11 (100%) of the E. coli and in 43 (97.7%) of the 44 Klebsiella species and to ceftazidime in all 11 (100%) of the E. coli and 40 (91%) of the 44 Klebsiella species. Extended-spectrum beta-lactamase explained resistance to ceftazidime in 10 (91%) of the 11 E. coli and 19 (48%) of the 40 Klebsiella species. Carbapenemase production explained 15 (38%) of the 40 ceftazidime-resistant Klebsiella species. Methicillin-resistant S. aureus was detected in 91% of S. aureus. Conclusion: Klebsiella species, E. coli, and S. aureus–majority methicillin-resistant S. aureus dominated the pathogens in caesarean section surgical site infections. Almost all of the E. coli and Klebsiella species were resistant to ceftriaxone or ceftazidime. Extended-spectrum beta-lactamase was the underlying resistance mechanism among almost all of the ceftriaxone- or ceftazidime-resistant E. coli. However, this mechanism accounted for less than half of ceftriaxone- or ceftazidime-resistant Klebsiella species, where carbapenemases accounted for 40% of the resistance, a finding previously unreported in Uganda.
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Affiliation(s)
- Yvonne N Wekesa
- Department of Obstetrics and Gynaecology, Makerere University College of Health Sciences, Kampala, Uganda
| | - Fatuma Namusoke
- Department of Obstetrics and Gynaecology, Makerere University College of Health Sciences, Kampala, Uganda
| | - Musa Sekikubo
- Department of Obstetrics and Gynaecology, Makerere University College of Health Sciences, Kampala, Uganda
| | | | - Freddie Bwanga
- MBN Clinical Laboratories, Kampala, Uganda
- Department of Medical Microbiology, Makerere University College of Health Sciences, Kampala, Uganda
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Saeki M, Sato T, Furuya D, Yakuwa Y, Sato Y, Kobayashi R, Ono M, Nirasawa S, Tanaka M, Nakafuri H, Nakae M, Shinagawa M, Asanuma K, Yanagihara N, Yokota SI, Takahashi S. Clonality investigation of clinical Escherichia coli isolates by polymerase chain reaction-based open-reading frame typing method. J Infect Chemother 2020; 26:38-42. [DOI: 10.1016/j.jiac.2019.06.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Revised: 05/14/2019] [Accepted: 06/30/2019] [Indexed: 11/28/2022]
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Miyazaki M, Yamada Y, Matsuo K, Komiya Y, Uchiyama M, Nagata N, Takata T, Jimi S, Imakyure O. Change in the Antimicrobial Resistance Profile of Extended-Spectrum β-Lactamase-Producing Escherichia coli. J Clin Med Res 2019; 11:635-641. [PMID: 31523337 PMCID: PMC6731046 DOI: 10.14740/jocmr3928] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Accepted: 07/23/2019] [Indexed: 12/22/2022] Open
Abstract
Background This study aimed to investigate the trends and antimicrobial resistance profile of extended-spectrum β-lactamase-producing Escherichia coli (ESBL-EC) clinical isolates. Methods A total of 1,303 E. coli isolates from January 2012 to December 2017 at Fukuoka University Chikushi Hospital, Japan, were analyzed. The rate of resistance to cefmetazole (CMZ), flomoxef (FMOX), imipenem (IPM), meropenem (MEPM), amikacin (AMK), gentamicin (GM), minocycline (MINO), ciprofloxacin (CPFX), and levofloxacin (LVFX) was compared between non-ESBL-producing E. coli (non-ESBL-EC) and ESBL-EC. Results The proportion of ESBL-EC among all the E. coli isolates was 24.6% (320/1,303), and the proportion remained stable throughout the study period. There was no difference in the rate of resistance to CMZ, FMOX, IPM, MEPM, and AMK between non-ESBL-EC and ESBL-EC; however, the rate of resistance to GM, MINO, CPFX, and LVFX was higher in ESBL-EC than in non-ESBL-EC (17.5% vs. 10.0%, 19.1% vs. 7.7%, 87.5% vs. 24.2%, and 87.5% vs. 23.5%, respectively; P < 0.01). The rate of resistance to CPFX and LVFX in ESBL-EC increased throughout the study course. The rate of E. coli isolates susceptible to all the antibiotics was significantly higher in non-ESBL-EC than in ESBL-EC (68.2% vs. 7.5%; P < 0.01), and this rate decreased significantly from 10.0% in 2012 to 3.8% in 2017 in ESBL-EC (P < 0.01). Conclusions Our findings indicate a changing antimicrobial resistance profile of ESBL-EC, particularly to fluoroquinolones. Determination of the prevalence and antimicrobial resistance of ESBL-EC will help physicians in selecting the initial empirical treatment for patients with ESBL-EC infections.
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Affiliation(s)
- Motoyasu Miyazaki
- Department of Pharmacy, Fukuoka University Chikushi Hospital, 1-1-1 Zokumyoin, Chikushino-shi, Fukuoka 818-8502, Japan.,These authors contributed equally to this work
| | - Yota Yamada
- Department of Pharmacy, Fukuoka University Chikushi Hospital, 1-1-1 Zokumyoin, Chikushino-shi, Fukuoka 818-8502, Japan.,These authors contributed equally to this work
| | - Koichi Matsuo
- Department of Pharmacy, Fukuoka University Chikushi Hospital, 1-1-1 Zokumyoin, Chikushino-shi, Fukuoka 818-8502, Japan
| | - Yukie Komiya
- Department of Clinical Laboratory, Fukuoka University Chikushi Hospital, 1-1-1 Zokumyoin, Chikushino-shi, Fukuoka 818-8502, Japan
| | - Masanobu Uchiyama
- Department of Pharmacy, Fukuoka University Chikushi Hospital, 1-1-1 Zokumyoin, Chikushino-shi, Fukuoka 818-8502, Japan
| | - Nobuhiko Nagata
- Department of Respiratory Medicine, Fukuoka University Chikushi Hospital, 1-1-1 Zokumyoin, Chikushino-shi, Fukuoka 818-8502, Japan
| | - Tohru Takata
- Department of Infection Control, Fukuoka University Hospital, 7-45-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan
| | - Shiro Jimi
- Central Laboratory for Pathology and Morphology, Faculty of Medicine, Fukuoka University, 7-45-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan
| | - Osamu Imakyure
- Department of Pharmacy, Fukuoka University Chikushi Hospital, 1-1-1 Zokumyoin, Chikushino-shi, Fukuoka 818-8502, Japan
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Kitano H, Teishima J, Shigemura K, Ohge H, Fujisawa M, Matsubara A. Current status of countermeasures for infectious diseases and resistant microbes in the field of urology. Int J Urol 2019; 26:1090-1098. [PMID: 31382322 DOI: 10.1111/iju.14087] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Accepted: 07/17/2019] [Indexed: 12/12/2022]
Abstract
A worldwide increase in antimicrobial-resistant microbes due to the improper use of antimicrobial agents, along with a lack of progress in developing new antimicrobials, is becoming a societal problem. Although carbapenem-resistant Enterobacteriaceae, which are resistant to carbapenem antimicrobials, first appeared in 1993, treatment options remain limited. Mechanisms behind antimicrobial resistance involve changes to microbial outer membranes, drug efflux pump abnormalities, β-lactamase production and the creation of biofilms around cell bodies. Genetic information related to these forms of antimicrobial resistance exists on chromosomes and plasmids, and when located on the latter can easily be transmitted to other strains, no matter the species, which creates a risk of antimicrobial resistance spreading exceptionally rapidly. To prevent the spread of antimicrobial resistance, the World Health Organization in 2015 published an action plan on antimicrobial resistance, based on which World Health Organization member countries have laid out specific policies and targets. Urinary tract infections are a type of healthcare-associated infection, and the sexually transmitted disease pathogen, Neisseria gonorrhoeae, has been included in a list of microbes that pose a risk to human health published by the US Centers for Disease Control and Prevention. Urologists face numerous problems when attempting to use antimicrobials properly, which is one method of dealing with antimicrobial resistance. Therefore, this article describes the current state of resistant microbes associated with urinary tract infections and countermeasures for antimicrobial resistance, including new antimicrobials.
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Affiliation(s)
- Hiroyuki Kitano
- Department of Urology, Hiroshima University, Hiroshima City, Hiroshima, Japan.,Department of Infectious Diseases, Hiroshima University Hospital, Hiroshima City, Hiroshima, Japan
| | - Jun Teishima
- Department of Urology, Hiroshima University, Hiroshima City, Hiroshima, Japan
| | | | - Hiroki Ohge
- Department of Infectious Diseases, Hiroshima University Hospital, Hiroshima City, Hiroshima, Japan
| | - Masato Fujisawa
- Department of Urology, Kobe University, Kobe City, Hyogo, Japan
| | - Akio Matsubara
- Department of Urology, Hiroshima University, Hiroshima City, Hiroshima, Japan
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Kawamoto Y, Kosai K, Yamakawa H, Kaku N, Uno N, Morinaga Y, Hasegawa H, Yanagihara K. Detection of extended-spectrum β-lactamase (ESBL)-producing Enterobacteriaceae using the MALDI Biotyper Selective Testing of Antibiotic Resistance–β-Lactamase (MBT STAR-BL) assay. J Microbiol Methods 2019; 160:154-156. [DOI: 10.1016/j.mimet.2019.03.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Revised: 03/19/2019] [Accepted: 03/19/2019] [Indexed: 10/27/2022]
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Tateda K, Ohno A, Ishii Y, Murakami H, Yamaguchi K. Investigation of the susceptibility trends in Japan to fluoroquinolones and other antimicrobial agents in a nationwide collection of clinical isolates: A longitudinal analysis from 1994 to 2016. J Infect Chemother 2019; 25:594-604. [PMID: 30954447 DOI: 10.1016/j.jiac.2019.03.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 02/21/2019] [Accepted: 03/09/2019] [Indexed: 10/27/2022]
Abstract
The susceptibilities of clinical isolates to fluoroquinolones and other antimicrobial agents were surveyed to obtain an accurate understanding of trends in incidence and antimicrobial resistance. The samples were collected from across Japan, biennially or triennially, between 1994 and 2016 and a defined level of resistance to fluoroquinolone was determined. Streptococcus pneumoniae, Streptococcus pyogenes and Haemophilus influenzae exhibited stable and high rates of susceptibility to fluoroquinolones over the period examined. For methicillin-resistant Staphylococcus aureus the rate of resistance to levofloxacin and ciprofloxacin was 81.3-93.5% and 83.2-94.2%, respectively, which was markedly higher than that of methicillin-susceptible S. aureus, while sitafloxacin-resistant methicillin-susceptible and methicillin-resistant S. aureus were isolated at 0.3-0.7% and 16.9-36.5%, respectively. The rate of levofloxacin or ciprofloxacin-resistant Escherichia coli increased from around 2-3% between 1994 and 1998 to around 35% in 2016, but the rate of fluoroquinolone-susceptible Klebsiella pneumoniae stayed high at over 94.6% during the study period. Although no fluoroquinolone-resistance in clinical isolates of Salmonella spp. was detected from 1994 to 2002, the resistance rate increased slightly after 2004 and reached to 1.9%-4.7% in 2016. The rate of fluoroquinolone-susceptible Pseudomonas aeruginosa isolated from urinary tract and respiratory tract infections improved during the period examined from 41.8-67.0% to 91.2-94.2%, and from 78.9-88.5% to 90.1-94.6%, respectively. Against Acinetobacter spp., the susceptibility rate of fluoroquinolones was almost constant at around 90%, but one multidrug-resistant isolate was detected in 2013. Overall, the susceptibility to fluoroquinolones was maintained over 20 years against tested bacteria except for MRSA and E. coli.
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Affiliation(s)
- Kazuhiro Tateda
- Department of Microbiology and Infectious Diseases, Toho University School of Medicine, Japan; Department of Clinical Laboratory, Toho University Omori Medical Center, Japan.
| | - Akira Ohno
- Department of Microbiology and Infectious Diseases, Toho University School of Medicine, Japan
| | - Yoshikazu Ishii
- Department of Microbiology and Infectious Diseases, Toho University School of Medicine, Japan
| | - Hinako Murakami
- Department of Clinical Laboratory, Toho University Omori Medical Center, Japan
| | - Keizo Yamaguchi
- Department of Microbiology and Infectious Diseases, Toho University School of Medicine, Japan
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Metronidazole resistance and nim genes in anaerobes: A review. Anaerobe 2019; 55:40-53. [DOI: 10.1016/j.anaerobe.2018.10.004] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Revised: 10/01/2018] [Accepted: 10/05/2018] [Indexed: 01/06/2023]
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Role of TEM-1 β-Lactamase in the Predominance of Ampicillin-Sulbactam-Nonsusceptible Escherichia coli in Japan. Antimicrob Agents Chemother 2019; 63:AAC.02366-18. [PMID: 30455244 DOI: 10.1128/aac.02366-18] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Accepted: 11/07/2018] [Indexed: 11/20/2022] Open
Abstract
We investigated the epidemiology and resistance mechanisms of ampicillin-sulbactam-nonsusceptible Escherichia coli, focusing on the role of the TEM-1 β-lactamase. We collected all nonduplicate E. coli clinical isolates at 10 Japanese hospitals during December 2014 and examined their antimicrobial susceptibility, β-lactamases, TEM-1 transferability, TEM-1 β-lactamase activity, outer membrane protein profile, membrane permeability, and clonal genotypes. Among the 329 isolates collected, 95 were ampicillin-sulbactam nonsusceptible. Of these ampicillin-sulbactam-nonsusceptible isolates, β-lactamases conferring resistance to sulbactam, such as AmpC, were present in 33%. Hyperproduction of sulbactam-susceptible β-lactamases, TEMs with a strong promoter, were rare (5%). The remaining 59 isolates (62%) had only sulbactam-susceptible β-lactamases, including TEM-1 with a wild-type promoter (n = 28), CTX-Ms (n = 13), or both (n = 17). All 45 transconjugants from 96 donors with TEM-1 had higher ampicillin-sulbactam MICs (4 to 96 mg/liter) than the recipient (2 mg/liter). In donors with only TEM-1, TEM-1 activity correlated with the 50% inhibitory concentration of sulbactam and ampicillin-sulbactam MICs. The decreased membrane permeation of sulbactam was associated with an increased ampicillin-sulbactam MIC. The reduced permeation was partly attributable to deficient outer membrane proteins, which were observed in 57% of the ampicillin-sulbactam-nonsusceptible isolates with only TEM-1 and a wild-type promoter. Sequence type 131 (ST131) was the most common clonal type (52%). TEM-1 with a wild-type promoter primarily contributed to ampicillin-sulbactam nonsusceptibility in E. coli, with the partial support of other mechanisms, such as reduced permeation. Conjugative TEM-1 and the clonal spread of ST131 may contribute to the prevalence of Japanese ampicillin-sulbactam-nonsusceptible isolates.
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Ikeda S, Uchiyama K, Minegishi Y, Ohno K, Nakamura M, Yoshida K, Fukushima K, Takahira N, Takaso M. Double-layered antibiotic-loaded cement spacer as a novel alternative for managing periprosthetic joint infection: an in vitro study. J Orthop Surg Res 2018; 13:322. [PMID: 30572903 PMCID: PMC6302504 DOI: 10.1186/s13018-018-1033-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2018] [Accepted: 12/06/2018] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Previous studies comparing antibiotic-loaded calcium phosphate cement to polymethylmethacrylate cement reported that although the former has higher elution volumes over a longer period, it is mechanically weak when used alone. To counter this problem, a double-layered antibiotic-loaded cement spacer in which calcium phosphate cement is coated with polymethylmethacrylate cement was created. METHODS In this study, we compared the double-layered spacer to the polymethylmethacrylate cement spacer in terms of eluent antibiotic concentration, bioactivity against methicillin-resistant Staphylococcus aureus, and mechanical strength. Double-layered and polymethylmethacrylate cement spacers that were loaded with vancomycin (VCM) were prepared and immersed in phosphate buffer for 84 days. To facilitate VCM elution from calcium phosphate cores in double-layered spacers, we also drilled multiple holes into the calcium phosphate layer from the spacer surface. RESULTS We found that VCM concentrations in double-layered spacer eluents were higher than those in polymethylmethacrylate cement spacer eluents. The double-layered spacer also had higher bioactivity than the polymethylmethacrylate cement spacer. Although the polymethylmethacrylate cement spacer eluent lost the ability to inhibit bacterial growth on day 56, the double-layered spacer eluent maintained this ability for the duration of our study. Finally, the double-layered spacer retained high mechanical strength throughout the study period. CONCLUSIONS The beneficial biomechanical and drug-eluting properties of the double-layered spacer might qualify it to serve as a promising biomaterial that could be used for managing periprosthetic joint infections.
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Affiliation(s)
- Shinsuke Ikeda
- Department of Orthopaedic Surgery, School of Medicine, Kitasato University, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa 252-0374 Japan
| | - Katsufumi Uchiyama
- Department of Orthopaedic Surgery, School of Medicine, Kitasato University, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa 252-0374 Japan
| | - Yojiro Minegishi
- Department of Orthopaedic Surgery, School of Medicine, Kitasato University, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa 252-0374 Japan
| | - Keiko Ohno
- Department of Medication Use Analysis and Clinical Research, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose-shi, Tokyo, 204-8588 Japan
| | - Masaki Nakamura
- Department of Microbiology, School of Allied Health Sciences, Kitasato University, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa 252-0373 Japan
| | - Kazuhiro Yoshida
- Department of Medical Engineering, School of Allied Health Sciences, Kitasato University, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa 252-0373 Japan
| | - Kensuke Fukushima
- Department of Orthopaedic Surgery, School of Medicine, Kitasato University, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa 252-0374 Japan
| | - Naonobu Takahira
- Department of Orthopaedic Surgery, School of Medicine, Kitasato University, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa 252-0374 Japan
- Department of Rehabilitation, School of Allied Health Sciences, Kitasato University, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa 252-0373 Japan
| | - Masashi Takaso
- Department of Orthopaedic Surgery, School of Medicine, Kitasato University, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa 252-0374 Japan
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Takemura H, Mochizuki T. Comparison between local and national epidemiology of antimicrobial resistance using the JANIS data. J Infect Chemother 2018; 24:868-872. [PMID: 30243900 DOI: 10.1016/j.jiac.2018.08.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2018] [Revised: 08/17/2018] [Accepted: 08/20/2018] [Indexed: 02/07/2023]
Abstract
The Japanese Ministry of Health, Labor and Welfare established the Japanese Nosocomial Infection Surveillance (JANIS) system in July 2000 to provide nationwide epidemiological information. The data of all clinically isolated bacteria at participating hospitals were collected, treated according to a protocol, and analyzed by the JANIS office. Nationwide and individual hospital data were reported to participating hospitals monthly and yearly. In this study, we surveyed local antimicrobial resistance of clinically isolated bacteria in Kawasaki City between 2014 and 2016 using JANIS data. There were 8, 14, and 16 major hospitals in Kawasaki City that participated in the surveillance in 2014, 2015, and 2016, respectively. The data were returned to each hospital monthly from JANIS, totaled for Kawasaki City, and compared with the nationwide data. The Kawasaki City data were approximately the same as the nationwide data, and most resistant bacteria decreased gradually over the three years examined. The incidence of methicillin-resistant Staphylococcus aureus (MRSA) in S. aureus (Kawasaki City, Japan) was (56.6%, 48.8%), (50.5%, 47.9%), and (51.6%, 46.9%), the incidence of penicillin-resistant Streptococcus pneumoniae (PRSP) in S. pneumoniae, was (43.4%, 37.5%), (34.3%, 38.0%), and (31.4%, 36.9%) in 2014, 2015, and 2016, respectively. Therefore, in Kawasaki City the incidence of MRSA was relatively higher and that of PRSP was relatively lower than the nationwide incidences. Both continuous local and national surveillance are important for monitoring antimicrobial resistance in clinical isolates. The JANIS database is a powerful tool for the epidemiology of nosocomial infections in Japanese hospitals.
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Affiliation(s)
- Hiromu Takemura
- The Surveillance Group of KAWASAKI Regional Infection Control Network (KRICN), Kawasaki, Japan; Department of Microbiology, St. Marianna University School of Medicine, Kawasaki, Japan.
| | - Toru Mochizuki
- The Surveillance Group of KAWASAKI Regional Infection Control Network (KRICN), Kawasaki, Japan; Department of Infection Control, Nippon Medical School Musashikosugi Hospital, Kawasaki, Japan
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Inoue M, Yonemura T, Baber J, Shoji Y, Aizawa M, Cooper D, Eiden J, Gruber WC, Jansen KU, Anderson AS, Gurtman A. Safety, tolerability, and immunogenicity of a novel 4-antigen Staphylococcus aureus vaccine (SA4Ag) in healthy Japanese adults. Hum Vaccin Immunother 2018; 14:2682-2691. [PMID: 30084709 PMCID: PMC6314418 DOI: 10.1080/21645515.2018.1496764] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 06/06/2018] [Accepted: 06/22/2018] [Indexed: 11/29/2022] Open
Abstract
A novel Staphylococcus aureus 4-antigen vaccine (SA4Ag) is under development, comprising capsular polysaccharide serotypes 5 and 8 (CP5 and CP8) conjugated to CRM197, recombinant protein clumping factor A (rmClfA), and recombinant manganese transporter protein C (MntC). We evaluated SA4Ag safety, tolerability, and immunogenicity in Japanese adults aged 20 to 64 and 65 to 85 years. A total of 136 healthy Japanese adults (68 per age group) were randomized 1:1 to receive single-dose SA4Ag or placebo intramuscularly (Day 1). Safety assessments included reactogenicity and adverse events. The ability of the vaccine to induce immune responses that are considered functional due to their ability to facilitate the killing of S. aureus or neutralize S. aureus virulence mechanisms was assessed using 5 different antigen-specific assays. SA4Ag was well tolerated in both age groups, with no safety concerns. At Day 29, > 85% of SA4Ag recipients in each age group achieved predefined thresholds for each antigen. Antibody geometric mean-fold rises from baseline to Day 29 in SA4Ag groups were: > 80 and > 30 for CP5 and CP8 (opsonophagocytic activity assay), > 10 for ClfA (fibrinogen-binding inhibition assay), and > 15 and > 7 for ClfA and MntC (competitive Luminex® immunoassay), respectively. Antibody titers decreased through Month 12 but remained well above baseline and placebo levels. SA4Ag had an acceptable safety profile and induced rapid and robust functional immune responses in both age groups. These results support ongoing development of SA4Ag for the prevention of invasive S. aureus disease in elective-surgery patients in Japan, North America, and Europe.
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Affiliation(s)
| | | | - James Baber
- Pfizer Vaccine Research and Development, Sydney, NSW, Australia
| | - Yasuko Shoji
- Pfizer Vaccine Research and Development, Tokyo, Japan
| | | | - David Cooper
- Pfizer Vaccine Research and Development, Pearl River, NY, USA
| | - Joseph Eiden
- Pfizer Vaccine Research and Development, Pearl River, NY, USA
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Mikamo H, Takesue Y, Iwamoto Y, Tanigawa T, Kato M, Tanimura Y, Kohno S. Efficacy, safety and pharmacokinetics of tedizolid versus linezolid in patients with skin and soft tissue infections in Japan – Results of a randomised, multicentre phase 3 study. J Infect Chemother 2018. [DOI: 10.1016/j.jiac.2018.01.010] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Takesue Y, Kusachi S, Mikamo H, Sato J, Watanabe A, Kiyota H, Iwata S, Kaku M, Hanaki H, Sumiyama Y, Kitagawa Y, Nakajima K, Ueda T, Uchino M, Mizuguchi T, Ambo Y, Konosu M, Ishibashi K, Matsuda A, Hase K, Harihara Y, Okabayashi K, Seki S, Hara T, Matsui K, Matsuo Y, Kobayashi M, Kubo S, Uchiyama K, Shimizu J, Kawabata R, Ohge H, Akagi S, Oka M, Wakatsuki T, Suzuki K, Okamoto K, Yanagihara K. Antimicrobial susceptibility of common pathogens isolated from postoperative intra-abdominal infections in Japan. J Infect Chemother 2018; 24:330-340. [PMID: 29555391 DOI: 10.1016/j.jiac.2018.02.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Revised: 02/13/2018] [Accepted: 02/25/2018] [Indexed: 12/14/2022]
Abstract
The principle of empirical therapy for patients with intra-abdominal infections (IAI) should include antibiotics with activity against Enterobacteriaceae and Bacteroides fragilis group species. Coverage of Pseudomonas aeruginosa, Enterobacter cloacae, and Enterococcus faecalis is also recommended for hospital-associated IAI. A nationwide survey was conducted to investigate the antimicrobial susceptibility of pathogens isolated from postoperative IAI. All 504 isolates were collected at 26 institutions and referred to a central laboratory for susceptibility testing. Lower susceptibility rates to ciprofloxacin and cefepime were demonstrated in Escherichia coli. Among E. coli, 24.1% of strains produced extended-spectrum β-lactamase (ESBL). Carbapenems, piperacillin/tazobactam, cephamycins/oxacephem, aminoglycosides, and tigecycline had high activity against E. coli, including ESBL-producing isolates. Among E. cloacae, low susceptibility rates to ceftazidime were demonstrated, whereas cefepime retained its activity. P. aeruginosa revealed high susceptibility rates to all antimicrobials tested except for imipenem. Among B. fragilis group species, low levels of susceptibility were observed for cefoxitin, moxifloxacin, and clindamycin, and high susceptibility rates were observed for piperacillin/tazobactam, meropenem, and metronidazole. Ampicillin, piperacillin, and glycopeptides had good activity against E. faecalis. Imipenem had the highest activity against E. faecalis among carbapenems. In conclusion, we suggested the empirical use of antimicrobials with the specific intent of covering the main organisms isolated from postoperative IAI. Piperacillin/tazobactam, meropenem, or doripenem, are appropriate in critically ill patients. Combination therapy of cefepime (aztreonam in patients with β-lactam allergy) plus metronidazole plus glycopeptides, imipenem/cilastatin or cephamycins/oxacephem plus ciprofloxacin plus metronidazole are potential therapeutic options.
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Affiliation(s)
- Yoshio Takesue
- The Surveillance Committee of Japanese Society of Chemotherapy (JSC), The Japanese Association for Infectious Disease (JAID) and the Japanese Society for Clinical Microbiology (JSCM), Tokyo, Japan; Department of Infection Prevention and Control, Hyogo College of Medicine, Hyogo, Japan.
| | - Shinya Kusachi
- The Surveillance Committee of Japanese Society of Chemotherapy (JSC), The Japanese Association for Infectious Disease (JAID) and the Japanese Society for Clinical Microbiology (JSCM), Tokyo, Japan; Department of Surgery, Toho University Medical Center Ohashi, Tokyo, Japan
| | - Hiroshige Mikamo
- The Surveillance Committee of Japanese Society of Chemotherapy (JSC), The Japanese Association for Infectious Disease (JAID) and the Japanese Society for Clinical Microbiology (JSCM), Tokyo, Japan; Department of Infection Control and Prevention, Aichi Medical University Hospital, Japan
| | - Junko Sato
- The Surveillance Committee of Japanese Society of Chemotherapy (JSC), The Japanese Association for Infectious Disease (JAID) and the Japanese Society for Clinical Microbiology (JSCM), Tokyo, Japan
| | - Akira Watanabe
- The Surveillance Committee of Japanese Society of Chemotherapy (JSC), The Japanese Association for Infectious Disease (JAID) and the Japanese Society for Clinical Microbiology (JSCM), Tokyo, Japan
| | - Hiroshi Kiyota
- The Surveillance Committee of Japanese Society of Chemotherapy (JSC), The Japanese Association for Infectious Disease (JAID) and the Japanese Society for Clinical Microbiology (JSCM), Tokyo, Japan
| | - Satoshi Iwata
- The Surveillance Committee of Japanese Society of Chemotherapy (JSC), The Japanese Association for Infectious Disease (JAID) and the Japanese Society for Clinical Microbiology (JSCM), Tokyo, Japan
| | - Mitsuo Kaku
- The Surveillance Committee of Japanese Society of Chemotherapy (JSC), The Japanese Association for Infectious Disease (JAID) and the Japanese Society for Clinical Microbiology (JSCM), Tokyo, Japan
| | | | - Yoshinobu Sumiyama
- Japan Society for Surgical Infection, Tokyo, Japan; Department of Surgery, Toho University Medical Center Ohashi, Tokyo, Japan
| | - Yuko Kitagawa
- Japan Society for Surgical Infection, Tokyo, Japan; Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Kazuhiko Nakajima
- Department of Infection Prevention and Control, Hyogo College of Medicine, Hyogo, Japan
| | - Takashi Ueda
- Department of Infection Prevention and Control, Hyogo College of Medicine, Hyogo, Japan
| | - Motoi Uchino
- Department of Inflammatory Bowel Disease, Division of Surgery, Hyogo College of Medicine, Hyogo, Japan
| | - Toru Mizuguchi
- Department of Surgery, Surgical Oncology and Science, Sapporo Medical University, Hokkaido, Japan
| | - Yoshiyasu Ambo
- Department of Surgery, Teine Keijinkai Hospital, Hokkaido, Japan
| | - Masafumi Konosu
- Department of Surgery, Iwate Medical University School of Medicine, Iwate, Japan
| | - Keiichiro Ishibashi
- Department of Digestive Tract and General Surgery Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Akihisa Matsuda
- Department of Surgery, Nippon Medical School Chiba Hokusoh Hospital, Chiba, Japan
| | - Kazuo Hase
- Department of Surgery, National Defense Medical College, Saitama, Japan
| | | | - Koji Okabayashi
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Shiko Seki
- Department of Surgery, National Hospital Organization Tokyo Medical Center, Tokyo, Japan
| | - Takuo Hara
- Department of Surgery, Kouseiren Takaoka Hospital, Toyama, Japan
| | - Koshi Matsui
- Department of Surgery and Science, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
| | - Yoichi Matsuo
- Department of Gastroenterological Surgery, Nagoya City University Graduate School of Medical Sciences, Aichi, Japan
| | - Minako Kobayashi
- Departments of Innovative Surgery, Mie University Graduate School of Medicine, Mie, Japan
| | - Shoji Kubo
- Department of Hepato-Biliary-Pancreatic Surgery, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Kazuhisa Uchiyama
- Osaka Medical College, Department of General and Gastroenterological Surgery, Osaka, Japan
| | - Junzo Shimizu
- Department of Surgery, Osaka Rosai Hospital, Osaka, Japan
| | - Ryohei Kawabata
- Department of Surgery, Sakai City Medical Center, Osaka, Japan
| | - Hiroki Ohge
- Department of Infectious Diseases, Hiroshima University Hospital, Hiroshima, Japan
| | - Shinji Akagi
- Department of Surgery, Mazda Hospital, Hiroshima, Japan
| | | | - Toshiro Wakatsuki
- Division of Surgical Oncology, Tottori University Faculty of Medicine, Tottori, Japan
| | - Katsunori Suzuki
- Division of Infection Control and Prevention, University of Occupational and Environmental Health, Fukuoka, Japan
| | - Kohji Okamoto
- Department of Surgery, Gastroenterology and Hepatology Center, Kitakyushu City Yahata Hospital, Fukuoka, Japan
| | - Katsunori Yanagihara
- Department of Laboratory Medicine, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
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