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Freudenberger DC, Scheese D, Wolfe LG, Ramamoorthy BU, Burrell LM, Puig CA, Shah RD, Julliard WA. More isn't always better: antibiotic duration after surgical decortication in pleural empyema. J Thorac Dis 2024; 16:3873-3881. [PMID: 38983133 PMCID: PMC11228736 DOI: 10.21037/jtd-24-61] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Accepted: 04/24/2024] [Indexed: 07/11/2024]
Abstract
Background While ample high-level evidence supports the limited use of antibiotics post-source control in intraabdominal infections, there is a paucity of available data in guiding antibiotic duration for intrathoracic infections. This study aims to analyze patient outcomes among those who have undergone surgical decortication for parapneumonic pleural empyema, comparing cases managed with infectious disease (ID) specialists against those without, and to identify predictive factors influencing antibiotic duration post-source control. We hypothesized that antibiotic duration would vary depending on the involvement of ID specialists. Methods A retrospective chart review was completed on patients with parapneumonic pleural empyemas who underwent surgical decortication at a single tertiary center from January 2011 to March 2021. Differences in patient characteristics and outcomes for those whose antibiotics were managed by ID or not were compared with Wilcoxon two-sample tests and Fisher's exact tests. Linear regression was used to evaluate for significant factors predictive of antibiotic duration. Results A total of 116 patients underwent surgical decortication for pleural empyema of parapneumonic etiology. ID specialists were involved with antibiotic management in 62 (53.4%) cases, while the remaining cases were not managed by ID. Demographics and patient comorbidities were similar between both groups. Growth of preoperative fluid cultures was higher in patients managed by ID (40.3% vs. 20.4%, P=0.03). Postoperatively, patients managed by ID had longer durations of antibiotics (28.7 vs. 20.9 days, P<0.001) and were more likely to be on IV antibiotics than patients not managed by ID (59.7% vs. 38.9%, P=0.04). However, postoperative outcomes were similar, including rates of disease recurrence, readmission, and 30-day mortality. Linear regression revealed length of antibiotics was significantly dependent on preoperative ventilator status [estimate: 16.346; 95% confidence interval (CI): 6.365-26.326; P=0.002], growth of preoperative pleural fluid cultures (estimate: 10.203; 95% CI: 2.502-17.904; P=0.01), and ID involvement (estimate: 8.097; 95% CI: 1.003-15.191; P=0.03). Conclusions Antibiotic duration for pleural empyema managed with surgical decortication is significantly dependent on ID involvement, preoperative growth of cultures, and preoperative ventilator status. However, outcomes, including disease recurrence and 30-day mortality, were similar between patients regardless of ID involvement and longer length of antibiotics, raising the question of what the adequate duration of antibiotics is for patients who receive appropriate source control for pleural empyema. Further study with randomized control trials should be conducted to provide high-level evidence regarding length of antibiotics in this patient population.
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Affiliation(s)
- Devon C Freudenberger
- Division of Cardiothoracic Surgery, Department of Surgery, Virginia Commonwealth University School of Medicine, Richmond, VA, USA
| | - Daniel Scheese
- Division of Cardiothoracic Surgery, Department of Surgery, Virginia Commonwealth University School of Medicine, Richmond, VA, USA
| | - Luke G Wolfe
- Biostatistician, Department of Surgery, Virginia Commonwealth University School of Medicine, Richmond, VA, USA
| | - Bhavishya U Ramamoorthy
- Division of Cardiothoracic Surgery, Department of Surgery, Virginia Commonwealth University School of Medicine, Richmond, VA, USA
| | - Leslie M Burrell
- Division of Cardiothoracic Surgery, Department of Surgery, Virginia Commonwealth University School of Medicine, Richmond, VA, USA
| | - Carlos A Puig
- Division of Cardiothoracic Surgery, Department of Surgery, Virginia Commonwealth University School of Medicine, Richmond, VA, USA
| | - Rachit D Shah
- Division of Cardiothoracic Surgery, Department of Surgery, Virginia Commonwealth University School of Medicine, Richmond, VA, USA
| | - Walker A Julliard
- Division of Cardiothoracic Surgery, Department of Surgery, Virginia Commonwealth University School of Medicine, Richmond, VA, USA
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Gazel D, Erinmez M, Çalışkantürk G, Saadat KASM. In Vitro and Ex Vivo Investigation of the Antibacterial Effects of Methylene Blue against Methicillin-Resistant Staphylococcus aureus. Pharmaceuticals (Basel) 2024; 17:241. [PMID: 38399456 PMCID: PMC10893340 DOI: 10.3390/ph17020241] [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: 12/20/2023] [Revised: 02/09/2024] [Accepted: 02/10/2024] [Indexed: 02/25/2024] Open
Abstract
Methylene blue (MB) is a water-soluble dye that has a number of medical applications. Methicillin-resistant Staphylococcus aureus (MRSA) was selected as a subject for research due to the numerous serious clinical diseases it might cause and because there is a significant global resistance challenge. Our main goal was to determine and analyze the antibacterial effects of MB against S. aureus both in vitro and ex vivo to enhance treatment options. A total of 104 MRSA isolates recovered from various clinical specimens were included in this study. Minimum inhibitory concentration (MIC) values of MB against MRSA isolates were determined by the agar dilution method. One randomly selected MRSA isolate and a methicillin-susceptible S. aureus strain (S. aureus ATCC 25923) were employed for further evaluation of the antibacterial effects of MB in in vitro and ex vivo time-kill assays. A disc diffusion method-based MB + antibiotic synergy assay was performed to analyze the subinhibitory effects of MB on ten isolates. MICs of MB against 104 MRSA isolates, detected by the agar dilution method, ranged between 16 and 64 µg/mL. MB concentrations of 4 and 16 µg/mL showed a bactericidal effect at 24 h in the ex vivo time-kill assays and in vitro time-kill assays, respectively. We observed a significant synergy between cefoxitin and methylene blue at a concentration of 1-2 μg/mL in two (20%) test isolates. Employing MB, which has well-defined pharmacokinetics, bioavailability, and safety profiles, for the treatment of MRSA infections and nasal decolonization could be a good strategy.
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Affiliation(s)
- Deniz Gazel
- Department of Medical Microbiology, Faculty of Medicine, Gaziantep University, Gaziantep 27310, Turkey
| | - Mehmet Erinmez
- Laboratory of Medical Microbiology, Gaziantep Abdülkadir Yüksel State Hospital, Gaziantep 27100, Turkey;
| | - Gönenç Çalışkantürk
- Department of Medical Microbiology, Gaziantep Public Health Laboratory, Gaziantep 27010, Turkey;
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Alharbi NMJ, Tashkandi NF, Banjar AM, Alotaibi AY, Al-Harbi S, Alqarni AMA, Alharbi YA, Alkenani HH, Bokhari AA. Pattern of Antibiotic Use Among Children With Acute Respiratory Infections in Saudi Arabia: Clinical Assessment. Cureus 2024; 16:e54799. [PMID: 38529426 PMCID: PMC10961668 DOI: 10.7759/cureus.54799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/24/2024] [Indexed: 03/27/2024] Open
Abstract
OBJECTIVES This study aimed to evaluate the common clinical diagnoses and treatment management of acute respiratory infections (ARIs) in children and determine when antibiotics are recommended and prescribed. METHODS A retrospective review of medical charts was carried out at King Salman Bin Abdulaziz Medical City (KSAMC) Hospital to assess pediatric patients diagnosed with ARIs aged 0-14 years, excluding those requiring antibiotics for conditions other than ARIs. Data, including demographic diagnoses and treatment management, were extracted using consecutive sampling, and statistical analyses were conducted using Jamovi software. RESULTS A total of 285 pediatric patients were included, with a median age of 3 (IQR = 1-6) years and a male predominance of 59.2%. Bronchopneumonia was the most common respiratory disease, diagnosed in 39.1% of participants. The median durations for illness and hospital admission were four and three days, respectively. Clinical evaluations showed an average respiratory rate of 28±10.5 breaths per minute and a mean oxygen saturation of 96.4±3.46% through pulse oximetry. The use of antibiotics was commonly prescribed in ARI patients only when accompanied by certain bacterial infections (46.32%). CONCLUSIONS ARIs are a common viral health issue among children, emphasizing that not all ARIs in children are caused by bacteria and that antibiotics should only be used when there is a bacterial infection present. Enhanced diagnostic precision, patient awareness, and provider education are the global community's recommendations to prevent the presence of antibiotic resistance and the irrational use of antibiotics.
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Affiliation(s)
| | - Noha Farouk Tashkandi
- Medical Research, King Saud Bin Abdulaziz University for Health Sciences College of Medicine, Riyadh, SAU
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Borg MA, Suda D, Tartari E, Farrugia C, Xuereb D, Borg Inguanez M. Preventing healthcare-associated MRSA bacteremia: getting to the root of the problem. ANTIMICROBIAL STEWARDSHIP & HEALTHCARE EPIDEMIOLOGY : ASHE 2023; 3:e248. [PMID: 38156235 PMCID: PMC10753512 DOI: 10.1017/ash.2023.518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 11/11/2023] [Accepted: 11/13/2023] [Indexed: 12/30/2023]
Abstract
Introduction Bloodstream infections caused by methicillin-resistant Staphylococcus aureus (MRSA) remain a major challenge in most countries worldwide. Setting We describe a quasi-experimental sequential intervention at Mater Dei Hospital, Malta, to reduce hyper-prevalence of healthcare-associated MRSA bacteremia (HA-MRSA-B). Interventions The hospital initiated a hand hygiene (HH) campaign in 2008 to improve alcohol hand rub (AHR) use. In 2011, this was followed by root cause analysis (RCA) of all HA-MRSA-B cases and finally universal MRSA admission screening in 2014. Change-point analysis was used to evaluate the impact of the interventions. Results The effect of the HH campaign became evident when AHR consumption reached 40 L/1000 occupied bed days (BD). RCAs identified intravascular devices as the likely risk factor in 83% of all HA-MRSA-B; specifically non-tunneled double-lumen hemodialysis catheters (36%), peripheral venous cannulas (25%), and central venous catheters (22%). Interventions to improve their management resulted in the greatest reduction of HA-MRSA-B rates. They were informed by the RCA findings and targeted behavior change through education, motivation, and system change. Universal MRSA admission screening provided the final decline in incidence. Each intervention affected HA-MRSA-B rates after a lag period of approximately 18-24 months. Overall, HA-MRSA-B incidence decreased from 1.72 cases/10000BD in 2008 to 0.18/10000BD in 2019; a reduction of almost 90%. Intravenous device interventions were also associated with a reduction of methicillin-sensitive Staphylococcus aureus (MSSA) bacteremia rates. Conclusions Significant improvement in HA-MRSA-B is possible, even in highly endemic regions. It requires well-planned behavior change interventions which are compatible with local context and culture.
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Affiliation(s)
- Michael A. Borg
- University of Malta, Msida, Malta
- Department of Infection Prevention & Control, Mater Dei Hospital, Msida, Malta
| | | | | | - Claire Farrugia
- Department of Infection Prevention & Control, Mater Dei Hospital, Msida, Malta
| | - Deborah Xuereb
- Department of Infection Prevention & Control, Mater Dei Hospital, Msida, Malta
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Qiu X, Zhuang L, Yuan J, Wang H, Dong X, He S, Guan S, Chang Z, Bao P. Constructing multifunctional Cu Single-Atom nanozyme for synergistic nanocatalytic Therapy-Mediated Multidrug-Resistant bacteria infected wound healing. J Colloid Interface Sci 2023; 652:1712-1725. [PMID: 37672974 DOI: 10.1016/j.jcis.2023.08.192] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 08/19/2023] [Accepted: 08/30/2023] [Indexed: 09/08/2023]
Abstract
Developing an effective strategy to combat multi-drug-resistant (MDR) bacteria and promote wound healing without overuse of antibiotics remains an important and challenging goal. Herein, we established a synergistic reactive oxygen species (ROS) and reactive nitrogen species (RNS)-mediated nanocatalytic therapy, which was consisted of a multifunctional Cu single-atom nanozyme loaded with the l-arginine (l-Arg@Cu-SAzymes) and a low level of hydrogen peroxide (H2O2) as a trigger. l-Arg@Cu-SAzymes can possess excellent dual enzyme-like activities: catalase (CAT)-like activity that decompose H2O2 into O2, and subsequent oxidase (OXD)-like activity that convert O2 to cytotoxic superoxide anion radical (•O2-). Meanwhile, l-Arg@Cu-SAzymes can also be triggered by H2O2 to release nitric oxide (NO), which can continue to react with •O2- to generate more lethal peroxynitrite (ONOO-). Collectively, the synergistic ROS and RNS mediated by l-Arg@Cu-SAzymes endow the treatment system with an outstanding antibacterial ability against MDR bacteria and reduce the inflammation at the wound site. Furthermore, l-Arg@Cu-SAzymes-mediated NO and O2 release promote the cell proliferation, collagen synthesis, and the angiogenesis, as well as facilitate macrophage polarization to reparative M2 phenotype, thereby accelerating wound closure and tissue remodeling. Therefore, l-Arg@Cu-SAzymes-based synergistic nanocatalytic therapy can be regarded as a promising strategy for MDR bacterial infected wounds treatment, owing to their potent antibacterial efficacy and enhanced tissue remodeling effects.
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Affiliation(s)
- Xiaochen Qiu
- Senior Department of General Surgery, The First Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - Liang Zhuang
- School of Light Industry, Beijing Technology and Business University, 11 Fucheng Road, Haidian District, Beijing 100048, PR China
| | - Jian Yuan
- The 8th Medical Center, Chinese PLA General Hospital, Beijing 100091, China
| | - Huizhen Wang
- The 8th Medical Center, Chinese PLA General Hospital, Beijing 100091, China
| | - Xiaoyu Dong
- Senior Department of General Surgery, The First Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - Shan He
- School of Light Industry, Beijing Technology and Business University, 11 Fucheng Road, Haidian District, Beijing 100048, PR China.
| | - Shanyue Guan
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Zhiyue Chang
- The 8th Medical Center, Chinese PLA General Hospital, Beijing 100091, China.
| | - Pengtao Bao
- The 8th Medical Center, Chinese PLA General Hospital, Beijing 100091, China.
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Zhang P, Tang S, Fu Q, Luo Y, Li J, Chen Z, Li H, Ni G, Wang T, Chen G, Liu X. Proteomic analysis of anti-MRSA activity of caerin 1.1/1.9 in a murine skin infection model and their in vitro anti-biofilm effects against Acinetobacter baumannii. Microbiol Spectr 2023; 11:e0452022. [PMID: 37819110 PMCID: PMC10714828 DOI: 10.1128/spectrum.04520-22] [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: 03/23/2023] [Accepted: 09/04/2023] [Indexed: 10/13/2023] Open
Abstract
IMPORTANCE Caerin 1.1 and caerin 1.9, natural antimicrobial peptides derived from tree frogs, have demonstrated the ability to inhibit the growth of antibiotic-resistant bacteria, comparable to certain widely used antibiotics. Additionally, these peptides exhibit the capacity to prevent or treat biofilms formed by bacteria in conjunction with bodily components. The mechanisms underlying their antibacterial effects were investigated through a mouse model of bacterial skin infection, utilizing proteomic analysis as a technological approach.
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Affiliation(s)
- Pingping Zhang
- Cancer Research Institute, Foshan First People’s Hospital, Foshan, Guangdong, China
| | - Shuxian Tang
- Cancer Research Institute, Foshan First People’s Hospital, Foshan, Guangdong, China
| | - Quanlan Fu
- Medical School of Guizhou University, Guiyang, Guizhou, China
| | - Yuandong Luo
- Medical School of Guizhou University, Guiyang, Guizhou, China
| | - Junjie Li
- Guiyang Hospital of Stomatology, Guiyang, Guizhou, China
| | - Zhu Chen
- Guiyang Hospital of Stomatology, Guiyang, Guizhou, China
| | - Hejie Li
- Centre for Bioinnovation, University of the Sunshine Coast, Maroochydore BC, Queensland, Australia
| | - Guoying Ni
- Cancer Research Institute, Foshan First People’s Hospital, Foshan, Guangdong, China
- Guiyang Hospital of Stomatology, Guiyang, Guizhou, China
- Centre for Bioinnovation, University of the Sunshine Coast, Maroochydore BC, Queensland, Australia
| | - Tianfang Wang
- Centre for Bioinnovation, University of the Sunshine Coast, Maroochydore BC, Queensland, Australia
| | - Guoqiang Chen
- Cancer Research Institute, Foshan First People’s Hospital, Foshan, Guangdong, China
| | - Xiaosong Liu
- Cancer Research Institute, Foshan First People’s Hospital, Foshan, Guangdong, China
- Guiyang Hospital of Stomatology, Guiyang, Guizhou, China
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Partha SS, Malone SM, Bizzle M, Ikpeama G, Reich PJ, Schuetz CR, Fritz SA. Healthcare worker perceptions surrounding Staphylococcus aureus transmission and prevention practices in the neonatal intensive care unit. Infect Control Hosp Epidemiol 2023; 44:1953-1958. [PMID: 37272454 PMCID: PMC10755153 DOI: 10.1017/ice.2023.86] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 03/28/2023] [Accepted: 04/04/2023] [Indexed: 06/06/2023]
Abstract
OBJECTIVE To understand healthcare worker (HCW) perceptions surrounding Staphylococcus aureus transmission and prevention in the neonatal intensive care unit (NICU). DESIGN Qualitative case study with focus groups. SETTING A level IV, 150-bed NICU at a Midwestern academic medical center that conducts active surveillance and decolonization of S. aureus-positive patients. PARTICIPANTS NICU HCWs, including bedside nurses, nurse managers, therapy services personnel, pediatric nurse practitioners, clinical fellows, and attending neonatologists. METHODS Semistructured focus group interviews, assembled by occupation, were conducted by 2 study team members. Interviews were video recorded and transcribed. Deductive coding and thematic analyses were performed using NVivo software. RESULTS In total, 38 HCWs participated in 10 focus groups (1-12 participants each), lasting 40-90 minutes. Four main themes emerged: (1) Methicillin-resistant S. aureus (MRSA) and methicillin-susceptible S. aureus (MSSA) are inconsistently described as high risk. (2) Infection prevention interventions are burdensome. (3) Multiple sources of transmission are recognized. (4) opportunities exist to advance infection prevention. HCWs perceived MSSA to be less clinically relevant than MRSA. Participants expressed a desire to see published data supporting infection prevention interventions, including contact precautions, environmental cleaning, and patient decolonization. These practices were identified to be considerable burdens. HCWs perceived families to be the main source of S. aureus in the NICU, and they suggested opportunities for families to play a larger role in infection prevention. CONCLUSIONS These data highlight opportunities for HCW and parental education, research, and reevaluating interventions aimed at improving infection prevention efforts to reduce the burden of S. aureus in NICU settings.
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Affiliation(s)
- Samik S. Partha
- Department of Pediatrics, Washington University in St. Louis School of Medicine, St. Louis, Missouri
| | - Sara M. Malone
- Department of Surgery, Washington University in St. Louis School of Medicine, St. Louis, Missouri
| | | | | | - Patrick J. Reich
- Department of Pediatrics, Washington University in St. Louis School of Medicine, St. Louis, Missouri
| | - Carly R. Schuetz
- Department of Pediatrics, Washington University in St. Louis School of Medicine, St. Louis, Missouri
| | - Stephanie A. Fritz
- Department of Pediatrics, Washington University in St. Louis School of Medicine, St. Louis, Missouri
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Oromí-Bosch A, Antani JD, Turner PE. Developing Phage Therapy That Overcomes the Evolution of Bacterial Resistance. Annu Rev Virol 2023; 10:503-524. [PMID: 37268007 DOI: 10.1146/annurev-virology-012423-110530] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The global rise of antibiotic resistance in bacterial pathogens and the waning efficacy of antibiotics urge consideration of alternative antimicrobial strategies. Phage therapy is a classic approach where bacteriophages (bacteria-specific viruses) are used against bacterial infections, with many recent successes in personalized medicine treatment of intractable infections. However, a perpetual challenge for developing generalized phage therapy is the expectation that viruses will exert selection for target bacteria to deploy defenses against virus attack, causing evolution of phage resistance during patient treatment. Here we review the two main complementary strategies for mitigating bacterial resistance in phage therapy: minimizing the ability for bacterial populations to evolve phage resistance and driving (steering) evolution of phage-resistant bacteria toward clinically favorable outcomes. We discuss future research directions that might further address the phage-resistance problem, to foster widespread development and deployment of therapeutic phage strategies that outsmart evolved bacterial resistance in clinical settings.
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Affiliation(s)
| | - Jyot D Antani
- Department of Ecology and Evolutionary Biology, Center for Phage Biology & Therapy, and Quantitative Biology Institute, Yale University, New Haven, Connecticut, USA;
| | - Paul E Turner
- Department of Ecology and Evolutionary Biology, Center for Phage Biology & Therapy, and Quantitative Biology Institute, Yale University, New Haven, Connecticut, USA;
- Program in Microbiology, Yale School of Medicine, New Haven, Connecticut, USA
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9
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Padigos J, Reid S, Kirby E, Anstey C, Broom J. Nursing experiences in antimicrobial optimisation in the intensive care unit: A convergent analysis of a national survey. Aust Crit Care 2023; 36:769-781. [PMID: 36404269 DOI: 10.1016/j.aucc.2022.09.005] [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: 06/02/2022] [Revised: 09/08/2022] [Accepted: 09/08/2022] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Recent evidence highlights the need for an interdisciplinary approach to antimicrobial stewardship (AMS). Nursing involvement in optimising antimicrobials in the intensive care unit (ICU) remains understudied. OBJECTIVE The objective of this study was to explore nurses' perceptions and experiences of antimicrobial optimisation or stewardship in ICUs in Australia. METHODS An anonymous web-based survey was deployed nationally in early 2021 through two ICU nursing networks. Associations between survey responses were analysed descriptively and by using nonparametric tests (with statistical significance established at p ≤ 0.05). Free-text survey responses underwent qualitative thematic analysis. Interpretation and reporting of quantitative and qualitative data were integrated. RESULTS A total of 226 ICU nurses completed the survey. The majority (197/226; 87%) responded that lack of education limits engagement in AMS. Only 13% (30/226) reported the presence of AMS education and training for nurses in their ICUs. Only about half (108/226; 48%) of the nurses were confident to question prescribers when they considered that the antimicrobial prescribed was unnecessary, with nurses in senior roles more likely to do so than nurses providing bedside care (p < 0.05). Gaps in education (including unfamiliarity with AMS roles), noninclusive antimicrobial discussions, moral distress, and potential workload burden were seen as potential barriers/challenges to engagement. CONCLUSION The multifactorial barriers identified that inhibit nurses from performing AMS tasks could be addressed by strengthening interprofessional education at all levels and by applying practical AMS interventions that are inclusive for nursing participation. A purposeful culture change that fosters psychological safety and collaborative practice is paramount to supporting nurses in these roles.
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Affiliation(s)
- Junel Padigos
- Intensive Care Unit, Sunshine Coast University Hospital, Birtinya, QLD, 4575, Australia; School of Public Health, The University of Queensland, Herston, QLD, 4006, Australia.
| | - Simon Reid
- School of Public Health, The University of Queensland, Herston, QLD, 4006, Australia
| | - Emma Kirby
- Centre for Social Research in Health, University of New South Wales, Sydney NSW, 2052, Australia
| | - Chris Anstey
- School of Medicine and Dentistry, Griffith University, Birtinya, QLD, 4575, Australia; Faculty of Medicine, The University of Queensland, Herston, QLD, 4006, Australia
| | - Jennifer Broom
- Infectious Diseases Research Network, Sunshine Coast University Hospital, Birtinya, QLD, 4575, Australia; Faculty of Medicine, The University of Queensland, Herston, QLD, 4006, Australia
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Kiemde F, Valia D, Kabore B, Rouamba T, Kone AN, Sawadogo S, Compaore A, Salami O, Horgan P, Moore CE, Dittrich S, Nkeramahame J, Olliaro P, Tinto H. A Randomized Trial to Assess the Impact of a Package of Diagnostic Tools and Diagnostic Algorithm on Antibiotic Prescriptions for the Management of Febrile Illnesses Among Children and Adolescents in Primary Health Facilities in Burkina Faso. Clin Infect Dis 2023; 77:S134-S144. [PMID: 37490742 PMCID: PMC10368409 DOI: 10.1093/cid/ciad331] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Indexed: 07/27/2023] Open
Abstract
BACKGROUND Low- and middle-income countries face significant challenges in differentiating bacterial from viral causes of febrile illnesses, leading to inappropriate use of antibiotics. This trial aimed to evaluate the impact of an intervention package comprising diagnostic tests, a diagnostic algorithm, and a training-and-communication package on antibiotic prescriptions and clinical outcomes. METHODS Patients aged 6 months to 18 years with fever or history of fever within the past 7 days with no focus, or a suspected respiratory tract infection, arriving at 2 health facilities were randomized to either the intervention package or standard practice. The primary outcomes were the proportions of patients who recovered at day 7 (D7) and patients prescribed antibiotics at day 0. RESULTS Of 1718 patients randomized, 1681 (97.8%; intervention: 844; control: 837) completed follow-up: 99.5% recovered at D7 in the intervention arm versus 100% in standard practice (P = .135). Antibiotics were prescribed to 40.6% of patients in the intervention group versus 57.5% in the control arm (risk ratio: 29.3%; 95% CI: 21.8-36.0%; risk difference [RD]: -16.8%; 95% CI: -21.7% to -12.0%; P < .001), which translates to 1 additional antibiotic prescription saved every 6 (95% CI: 5-8) consultations. This reduction was significant regardless of test results for malaria, but was greater in patients without malaria (RD: -46.0%; -54.7% to -37.4%; P < .001), those with a respiratory diagnosis (RD: -38.2%; -43.8% to -32.6%; P < .001), and in children 6-59 months old (RD: -20.4%; -26.0% to -14.9%; P < .001). Except for the period July-September, the reduction was consistent across the other quarters (P < .001). CONCLUSIONS The implementation of the package can reduce inappropriate antibiotic prescription without compromising clinical outcomes. CLINICAL TRIALS REGISTRATION clinicaltrials.gov; NCT04081051.
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Affiliation(s)
- Francois Kiemde
- Clinical Research Unit of Nanoro, Institut de Recherche en Sciences de la Santé, Nanoro, Burkina Faso
| | - Daniel Valia
- Clinical Research Unit of Nanoro, Institut de Recherche en Sciences de la Santé, Nanoro, Burkina Faso
| | - Berenger Kabore
- Clinical Research Unit of Nanoro, Institut de Recherche en Sciences de la Santé, Nanoro, Burkina Faso
| | - Toussaint Rouamba
- Clinical Research Unit of Nanoro, Institut de Recherche en Sciences de la Santé, Nanoro, Burkina Faso
| | - Alima Nadine Kone
- Clinical Research Unit of Nanoro, Institut de Recherche en Sciences de la Santé, Nanoro, Burkina Faso
| | - Seydou Sawadogo
- Clinical Research Unit of Nanoro, Institut de Recherche en Sciences de la Santé, Nanoro, Burkina Faso
| | - Adelaide Compaore
- Clinical Research Unit of Nanoro, Institut de Recherche en Sciences de la Santé, Nanoro, Burkina Faso
| | | | - Philip Horgan
- FIND, Geneva, Switzerland
- Nuffield Department of Medicine, Big Data Institute, University of Oxford, Oxford, United Kingdom
- Evidence and Impact Oxford, Oxford, United Kingdom
| | - Catrin E Moore
- Nuffield Department of Medicine, Big Data Institute, University of Oxford, Oxford, United Kingdom
- Centre for Neonatal and Pediatric Infection, Institute for Infection and Immunity, St George's University of London, London, United Kingdom
| | - Sabine Dittrich
- FIND, Geneva, Switzerland
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
- Deggendorf Institute of Technology, European Campus Rottal Inn, Pfarrkirchen, Germany
| | | | - Piero Olliaro
- FIND, Geneva, Switzerland
- International Severe Acute Respiratory and Emerging Infection Consortium, Pandemic Sciences Institute, University of Oxford, Oxford, United Kingdom
| | - Halidou Tinto
- Clinical Research Unit of Nanoro, Institut de Recherche en Sciences de la Santé, Nanoro, Burkina Faso
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González-Rodríguez L, Pérez-Davila S, López-Álvarez M, Chiussi S, Serra J, González P. Review article laser-induced hyperthermia on graphene oxide composites. J Nanobiotechnology 2023; 21:196. [PMID: 37340410 DOI: 10.1186/s12951-023-01956-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 06/07/2023] [Indexed: 06/22/2023] Open
Abstract
BACKGROUND Hyperthermia-based therapies have shown great potential for clinical applications such as for the antitumor and antipathogenic activities. Within all strategies, the so-called photothermal therapy proposes to induce the hyperthermia by the remote laser radiation on a photothermal conversion agent, in contact with the target tissue. METHODS This paper reviews the most relevant in vitro and in vivo studies focused on NIR laser-induced hyperthermia due to photoexcitation of graphene oxide (GO) and reduced graphene oxide (rGO). Relevant parameters such as the amount of GO/rGO, the influence of the laser wavelength and power density are considered. Moreover, the required temperature and exposure time for each antitumor/antipathogenic case are collected and unified in a thermal dose parameter: the CEM43. RESULTS The calculated CEM43 thermal doses revealed a great variability for the same type of tumor/strain. In order to detect potential tendencies, the values were classified into four ranges, varying from CEM43 < 60 min to CEM43 ≥ 1 year. Thus, a preference for moderate thermal doses of CEM43 < 1 year was detected in antitumor activity, with temperatures ≤ 50 °C and exposure time ≤ 15 min. In case of the antipathogenic studies, the most used thermal dose was higher, CEM43 ≥ 1 year, with ablative hyperthermia (> 60ºC). CONCLUSIONS The ability of GO/rGO as effective photothermal conversion agents to promote a controlled hyperthermia is proven. The variability found for the CEM43 thermal doses on the reviewed studies reveals the potentiality to evaluate, for each application, the use of lower temperatures, by modulating time and/or repetitions in the doses.
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Affiliation(s)
- Laura González-Rodríguez
- Grupo de Novos Materiais, CINTECX, Universidade de Vigo, Vigo, 36310, Spain.
- Galicia Sur Health Research Institute (IIS Galicia Sur), SERGAS-UVIGO, Vigo, 36213, Spain.
| | - Sara Pérez-Davila
- Grupo de Novos Materiais, CINTECX, Universidade de Vigo, Vigo, 36310, Spain
- Galicia Sur Health Research Institute (IIS Galicia Sur), SERGAS-UVIGO, Vigo, 36213, Spain
| | - Miriam López-Álvarez
- Grupo de Novos Materiais, CINTECX, Universidade de Vigo, Vigo, 36310, Spain
- Galicia Sur Health Research Institute (IIS Galicia Sur), SERGAS-UVIGO, Vigo, 36213, Spain
| | - Stefano Chiussi
- Grupo de Novos Materiais, CINTECX, Universidade de Vigo, Vigo, 36310, Spain
- Galicia Sur Health Research Institute (IIS Galicia Sur), SERGAS-UVIGO, Vigo, 36213, Spain
| | - Julia Serra
- Grupo de Novos Materiais, CINTECX, Universidade de Vigo, Vigo, 36310, Spain
- Galicia Sur Health Research Institute (IIS Galicia Sur), SERGAS-UVIGO, Vigo, 36213, Spain
| | - Pío González
- Grupo de Novos Materiais, CINTECX, Universidade de Vigo, Vigo, 36310, Spain
- Galicia Sur Health Research Institute (IIS Galicia Sur), SERGAS-UVIGO, Vigo, 36213, Spain
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Otieku E, Fenny AP, Labi AK, Ofori AO, Kurtzhals JAL, Enemark U. Attributable Patient Cost of Antimicrobial Resistance: A Prospective Parallel Cohort Study in Two Public Teaching Hospitals in Ghana. PHARMACOECONOMICS - OPEN 2023; 7:257-271. [PMID: 36692621 PMCID: PMC10043073 DOI: 10.1007/s41669-022-00385-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Accepted: 12/12/2022] [Indexed: 06/17/2023]
Abstract
OBJECTIVE The aim of this study was to evaluate the attributable patient cost of antimicrobial resistance (AMR) in Ghana to provide empirical evidence to make a case for improved AMR preventive strategies in hospitals and the general population. METHODS A prospective parallel cohort design in which participants were enrolled at the time of hospital admission and remained until 30 days after the diagnosis of bacteraemia or discharge from the hospital/death. Patients were matched on age group (± 5 years the age of AMR patients), treatment ward, sex, and bacteraemia type. The AMR cohort included all inpatients with a positive blood culture of Escherichia coli or Klebsiella spp., resistant to third-generation cephalosporins (3GC), or methicillin-resistant Staphylococcus aureus (MRSA). We matched the AMR cohort (n = 404) with two control arms, i.e., patients with the same bacterial infections susceptible to 3GC or S. aureus that was methicillin-susceptible (susceptible cohort; n = 152), and uninfected patients (uninfected cohort; n = 404). Settings were Korle-Bu and Komfo Anokye Teaching Hospitals, Ghana. The outcome measures were the length of hospital stay (LOS) and the associated patient costs. Outcomes were evaluated from the patient perspective. RESULTS From a total of 5752 blood cultures screened, 1836 participants had growth in blood culture, of which, based on our inclusion criteria, 426 were enrolled into the AMR cohort; however, only 404 completed the follow-up and were matched with participants in the two control cohorts. Patients in the AMR cohort stayed approximately 5 more days (95% confidence interval [CI] 4.0-6.0) and 8 more days (95% CI 7.2-8.6) compared with the susceptible and uninfected cohorts, respectively. The mean extra patient cost due to AMR relative to the susceptible cohort was US$1300 (95% CI 1018-1370), of which about 30% resulted from productivity loss due to presenteeism and absenteeism from work. Overall, the estimated annual patient cost due to AMR translates to about US$1 million and US$1.4 million when compared with the susceptible and uninfected cohorts, respectively. CONCLUSION We have shown that AMR is associated with a significant excess LOS and patient costs in Ghana using prospective data from two public tertiary hospitals. This calls for infection prevention and control strategies aimed at mitigating the prevalence of AMR.
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Affiliation(s)
- Evans Otieku
- Economics Division, Institute of Statistical, Social and Economic Research (ISSER), University of Ghana, Accra, Ghana
- Department of Public Health, Aarhus University, Aarhus, Denmark
| | - Ama Pokuaa Fenny
- Economics Division, Institute of Statistical, Social and Economic Research (ISSER), University of Ghana, Accra, Ghana
| | - Appiah-Korang Labi
- Department of Medical Microbiology, Korle-Bu Teaching Hospital, Accra, Ghana
- World Health Organization Regional Office for Africa, Ghana, Country Office, Accra, Ghana
| | - Alex Owusu Ofori
- Laboratory Services Directorate, Komfo Anokye Teaching Hospital, Kumasi, Ghana
- Department of Clinical Microbiology, School of Medicine and Dentistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Joergen Anders Lindholm Kurtzhals
- Department of Immunology and Microbiology, Centre for Medical Parasitology, University of Copenhagen, Copenhagen, Denmark
- Department of Clinical Microbiology, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Ulrika Enemark
- Department of Public Health, Aarhus University, Aarhus, Denmark
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Ljungquist O, Blomstergren A, Merkel A, Sunnerhagen T, Holm K, Torisson G. Incidence, aetiology and temporal trend of bloodstream infections in southern Sweden from 2006 to 2019: a population-based study. Euro Surveill 2023; 28:2200519. [PMID: 36892472 PMCID: PMC9999458 DOI: 10.2807/1560-7917.es.2023.28.10.2200519] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/10/2023] Open
Abstract
BackgroundBloodstream infections (BSI) are a public health concern, and infections caused by resistant bacteria further increase the overall BSI burden on healthcare.AimTo provide a population-based estimate of BSI incidence and relate this to the forthcoming demographic ageing western population change.MethodsWe retrieved positive blood cultures taken from patients in the Skåne region, southern Sweden, 2006-2019 from the Clinical Microbiology Department database and estimated incidence rates (IR), stratified by age (0-49, 50-64, 65-79, ≥ 80 years), sex, year, and species and described antimicrobial susceptibility for Enterobacterales.ResultsWe identified 944,375 blood culture sets, and 129,274 (13.7%) were positive. After deduplication and removal of contaminants, 54,498 separate BSI episodes remained. In total, 30,003 BSI episodes (55%) occurred in men. The overall IR of BSI was 307/100,000 person-years, with an average annual increase of 3.0%. Persons ≥ 80 years had the highest IR, 1781/100,000 person-years, as well as the largest increase. Escherichia coli (27%) and Staphylococcus aureus (13%) were the most frequent findings. The proportion of Enterobacterales isolates resistant to fluoroquinolones and third generation cephalosporins increased from 8.4% to 13.6%, and 4.9% to 7.3%, (p for trend < 0.001), with the largest increase in the oldest age group.ConclusionWe report among the highest BSI IRs to date worldwide, with a higher proportion among elderly persons and males, including resistant isolates. Given expected demographic changes, these results indicate a possible substantial future BSI burden, for which preventive measures are needed.
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Affiliation(s)
- Oskar Ljungquist
- Division of Infection Medicine, Department of Clinical Sciences, Lund University, Lund, Sweden.,Department of Infectious Diseases, Helsingborg hospital, Helsingborg, Sweden
| | - Adam Blomstergren
- Department of Infectious Diseases, Skåne University hospital, Malmö, Sweden.,Clinical Infection Medicine, Department of Translational Medicine, Faculty of Medicine, Lund University, Malmö, Sweden
| | - Adam Merkel
- Division of Infection Medicine, Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Torgny Sunnerhagen
- Clinical Microbiology, Infection Prevention and Control, Office for Medical Services, Region Skåne, Lund, Sweden.,Division of Infection Medicine, Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Karin Holm
- Division of Infection Medicine, Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Gustav Torisson
- Department of Infectious Diseases, Skåne University hospital, Malmö, Sweden.,Clinical Infection Medicine, Department of Translational Medicine, Faculty of Medicine, Lund University, Malmö, Sweden
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Nakano R, Nakano A, Nishisouzu R, Hikosaka K, Suzuki Y, Kamoshida G, Tansho-Nagakawa S, Endo S, Kasahara K, Ono Y, Yano H. Genetic relatedness of third-generation cephalosporin-resistant Escherichia coli among livestock, farmers, and patients in Japan. One Health 2023. [DOI: 10.1016/j.onehlt.2023.100524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023] Open
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Otieku E, Fenny AP, Labi AK, Owusu-Ofori AK, Kurtzhals J, Enemark U. Knowledge, attitudes and practices regarding antimicrobial use and resistance among healthcare seekers in two tertiary hospitals in Ghana: a quasi-experimental study. BMJ Open 2023; 13:e065233. [PMID: 36813487 PMCID: PMC9950892 DOI: 10.1136/bmjopen-2022-065233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/24/2023] Open
Abstract
OBJECTIVE To evaluate knowledge of antimicrobial resistance (AMR), to study how the judgement of health value (HVJ) and economic value (EVJ) affects antibiotic use, and to understand if access to information on AMR implications may influence perceived AMR mitigation strategies. DESIGN A quasi-experimental study with interviews performed before and after an intervention where hospital staff collected data and provided one group of participants with information about the health and economic implications of antibiotic use and resistance compared with a control group not receiving the intervention. SETTING Korle-Bu and Komfo Anokye Teaching Hospitals, Ghana. PARTICIPANTS Adult patients aged 18 years and older seeking outpatient care. MAIN OUTCOME MEASURES We measured three outcomes: (1) level of knowledge of the health and economic implications of AMR; (2) HVJ and EVJ behaviours influencing antibiotic use and (3) differences in perceived AMR mitigation strategy between participants exposed and not exposed to the intervention. RESULTS Most participants had a general knowledge of the health and economic implications of antibiotic use and AMR. Nonetheless, a sizeable proportion disagreed or disagreed to some extent that AMR may lead to reduced productivity/indirect costs (71% (95% CI 66% to 76%)), increased provider costs (87% (95% CI 84% to 91%)) and costs for carers of AMR patients/societal costs (59% (95% CI 53% to 64%)). Both HVJ-driven and EVJ-driven behaviours influenced antibiotic use, but the latter was a better predictor (reliability coefficient >0.87). Compared with the unexposed group, participants exposed to the intervention were more likely to recommend restrictive access to antibiotics (p<0.01) and pay slightly more for a health treatment strategy to reduce their risk of AMR (p<0.01). CONCLUSION There is a knowledge gap about antibiotic use and the implications of AMR. Access to AMR information at the point of care could be a successful way to mitigate the prevalence and implications of AMR.
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Affiliation(s)
- Evans Otieku
- Economics Division, Institute of Statistical, Social, and Economic Research (ISSER), University of Ghana, Legon, Ghana
- Department of Public Health, Aarhus University, Aarhus, Denmark
| | - Ama Pokuaa Fenny
- Economics Division, Institute of Statistical, Social, and Economic Research (ISSER), University of Ghana, Legon, Ghana
| | - Appiah-Koran Labi
- Department of Medical Microbiology, University of Ghana Medical School, Accra, Ghana
| | - Alex Kwame Owusu-Ofori
- Laboratory Services Directorate, Komfo Anokye Teaching Hospital, Kumasi, Ghana
- Department of Clinical Microbiology, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Jørgen Kurtzhals
- ISIM, University of Copenhagen, Copenhagen, Denmark
- Department of Clinical Microbiology, Rigshospitalet, Kobenhavn, Denmark
| | - Ulrika Enemark
- Department of Public Health, Aarhus University, Aarhus, Denmark
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Willems E, Min Jou H, Buyle F, Saegeman V, Callens S. Appropriateness of alert antibiotics measured by repeated prevalence surveys and impact of direct prescriber interaction and feedback. Acta Clin Belg 2023; 78:36-43. [PMID: 35373719 DOI: 10.1080/17843286.2022.2059981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
OBJECTIVES Hospital point prevalence surveys (PPS) are shown to help identifying determinants for inappropriate antimicrobial therapy (AMT) and create feedback opportunities to optimize AMT. METHODS PPS were performed at the AZNikolaas hospital, on four wards with high consumption rates of three alert antibiotics (AB) to judge their appropriateness. The impact of a multidisciplinary interaction between a medical microbiologist, a clinical pharmacist and the prescriber on inappropriate AMT, hospital costs and intravenous AMT days, was analyzed. RESULTS During this survey, 7,39% of hospitalized patients in the selected wards received one or more of three alert antibiotics. Out of 78 prescriptions, 35.90% were judged appropriate, 39.74% inappropriate and 24.36% had insufficient data for judgment. Only the oncology ward was associated with more frequent appropriate use of alert AB. In case of an unknown infection focus or a catheter-related infection, the relative risk of inappropriate use was the highest. Multidisciplinary interaction improved inappropriate AMT in 59% of cases. It resulted in a 2478€ healthcare AMT cost saving and a reduction of 30 intravenous AMT days. CONCLUSIONS This survey shows high consumption rates and a high rate of inappropriate use of three alert AB in the observed wards. It revealed the lack of a local guideline concerning treatment of neutropenic fever of unknown origin and the need for more diagnostic information in electronical medical records. The survey demonstrated that direct feedback on inappropriate AMT to clinicians can be of added value, cost-saving and reducing length of intravenous AMT days. However, more studies are needed to confirm this.
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Affiliation(s)
- Elise Willems
- Clinical Laboratory, AZNikolaas, Sint-Niklaas, Belgium
| | - Hannah Min Jou
- Department of Pharmacy, AZNikolaas, Sint-Niklaas, Belgium
| | - Franky Buyle
- Department of Pharmacy, Ghent University Hospital, Ghent, Belgium
| | | | - Steven Callens
- Department of Internal Medicine & Infectious diseases, Ghent University Hospital, Ghent, Belgium
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Multicenter Surveillance of Antimicrobial Resistance among Gram-Negative Bacteria Isolated from Bloodstream Infections in Ghana. Antibiotics (Basel) 2023; 12:antibiotics12020255. [PMID: 36830166 PMCID: PMC9951917 DOI: 10.3390/antibiotics12020255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 01/18/2023] [Accepted: 01/22/2023] [Indexed: 01/31/2023] Open
Abstract
BACKGROUND Antimicrobial resistance (AMR) in Gram-negative bacteria-causing bloodstream infections (BSIs), such as Klebsiella pneumoniae and non-typhoidal Salmonella (NTS), is a major public health concern. Nonetheless, AMR surveillance remains scarce in sub-Saharan Africa, where BSI treatment is largely empirical. The aim of the study was to determine the distribution and AMR patterns of BSI-causing NTS, K. pneumoniae, and other Gram-negative bacteria in Ghana. METHODS A cross-sectional study was conducted between April and December 2021 at eleven sentinel health facilities across Ghana as part of a pilot study on the feasibility and implementation of the human sector AMR surveillance harmonized protocol in sub-Saharan Africa. Gram-negative bacteria recovered from blood specimens of febrile patients were identified using MALDI-TOF and evaluated for antimicrobial resistance using the BD Phoenix M50 analyzer and Kirby-Bauer disc diffusion. The Department of Medical Microbiology at the University of Ghana served as the reference laboratory. RESULTS Out of 334 Gram-negative blood isolates, there were 18 (5.4%) NTS, 85 (25.5%) K. pneumoniae, 88 (26.4%) Escherichia coli, 40 (12.0%) Acinetobacter baumannii, 25 (7.5%) Pseudomonas aeruginosa, and 77 (23.1%) other Gram-negative bacteria. As a composite, the isolates displayed high resistance to the antibiotics tested-amoxicillin (89.3%), tetracycline (76.1%), trimethoprim-sulfamethoxazole (71.5%), and chloramphenicol (59.7%). Resistance to third-generation cephalosporins [ceftriaxone (73.7%), cefotaxime (77.8%), and ceftazidime (56.3%)] and fluoroquinolones [ciprofloxacin (55.3%)] was also high; 88% of the isolates were multidrug resistant, and the rate of extended-spectrum beta-lactamase (ESBL) production was 44.6%. Antibiotic resistance in K. pneumoniae followed the pattern of all Gram-negative isolates. Antibiotic resistance was lower in NTS blood isolates, ranging between 16.7-38.9% resistance to the tested antibiotics. Resistance rates of 38.9%, 22.2%, and 27.8% were found for cefotaxime, ceftriaxone, and ceftazidime, respectively, and 27.8% and 23.8% for ciprofloxacin and azithromycin, respectively, which are used in the treatment of invasive NTS. The prevalence of multidrug resistance in NTS isolates was 38.9%. CONCLUSIONS Multicenter AMR surveillance of Gram-negative blood isolates from febrile patients was well-received in Ghana, and the implementation of a harmonized protocol was feasible. High resistance and multidrug resistance to first- or second-choice antibiotics, including penicillins, third-generation cephalosporins, and fluoroquinolones, were found, implying that these antibiotics might have limited effectiveness in BSI treatment in the country. Continuation of AMR surveillance in Gram-negative blood isolates is essential for a better understanding of the extent of AMR in these pathogens and to guide clinical practice and policymaking.
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Volk A, Lee J. Cyanobacterial blooms: A player in the freshwater environmental resistome with public health relevance? ENVIRONMENTAL RESEARCH 2023; 216:114612. [PMID: 36272588 DOI: 10.1016/j.envres.2022.114612] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 10/11/2022] [Accepted: 10/16/2022] [Indexed: 06/16/2023]
Abstract
Cyanobacterial harmful algal blooms (cyanoHABs) are an ecological concern because of large ecosystem-disrupting blooms and a global public health concern because of the cyanotoxins produced by certain bloom-forming species. Another threat to global public health is the dissemination of antibiotic resistance (AR) in freshwater environmental reservoirs from anthropogenic sources, such as wastewater discharge and urban and agricultural runoff. In this study, cyanobacteria are now hypothesized to play a role in the environmental resistome. A non-systematic literature review of studies using molecular techniques (such as PCR and metagenomic sequencing) was conducted to explore indirect and direct ways cyanobacteria might contribute to environmental AR. Results show cyanobacteria can host antibiotic resistance genes (ARGs) and might promote the spread of ARGs in bacteria due to the significant contribution of mobile genetic elements (MGEs) located in genera such as Microcystis. However, cyanobacteria may promote or inhibit the spread of ARGs in environmental freshwater bacteria due to other factors as well. The purpose of this review is to 1) consider the role of cyanobacteria as AR hosts, since cyanoHABs are historically considered to be a separate problem from AR, and 2) to identify the knowledge gap in understanding cyanobacteria as ARG reservoirs. Cyanobacterial blooms, as well as other biotic (e.g. interactions with protists or cyanophages) and abiotic factors, should be studied further using advanced methods such as shotgun metagenomic and long read sequencing to clarify the extent of their functional ARGs/MGEs and influences on environmental AR.
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Affiliation(s)
- Abigail Volk
- Environmental Sciences Graduate Program, The Ohio State University, Columbus, OH, United States
| | - Jiyoung Lee
- College of Public Health, Division of Environmental Health Sciences, The Ohio State University, Columbus, OH, United States; Department of Food Science & Technology, The Ohio State University, Columbus, OH, United States; Infectious Diseases Institute, The Ohio State University, Columbus, OH, United States.
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Salmanov AG, Artyomenko V, Susidko OM, Korniyenko SM, Kovalyshyn OA, Rud VO, Voloshyn OA. URINARY TRACT INFECTIONS IN PREGNANT WOMEN IN UKRAINE: RESULTS OF A MULTICENTER STUDY (2020-2022). WIADOMOSCI LEKARSKIE (WARSAW, POLAND : 1960) 2023; 76:1527-1535. [PMID: 37622493 DOI: 10.36740/wlek202307103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/26/2023]
Abstract
OBJECTIVE The aim: To obtain the first national estimates of the current prevalence rate of urinary tract infections (UTIs) in pregnant women and antimicrobial resistance of causing pathogens in Ukraine. PATIENTS AND METHODS Materials and methods: Prospective multicentre cohort study was conducted from January 2020 to December 2022. The study population consisted of 36,876 pregnant women from 17 regions of Ukraine. Antibiotic susceptibility was done by the disc diffusion test as recommended by European Committee on Antimicrobial Susceptibility Testing guidelines. RESULTS Results: A total 29.5% pregnant women were found to have UTIs. Among these cases, 36.5% Asymptomatic bacteriuria, 51.7% Cystitis and 11.8% Pyelonephritis were observed. Of all cases, 87.9% were defined as healthcare-acquired UTIs and 12.1% community-acquired UTIs. The most common uropathogen was Escherichia coli, Klebsiella pneumoniae, Proteus mirabilis, and Pseudomonas aeruginosa. Many uropathogens isolated from UTI cases were found to be multidrug resistant. CONCLUSION Conclusions: UTIs in pregnant women in Ukraine is a common occurrence and many cases are caused by pathogens that are resistant to antibiotics. Optimizing the management and empirical antimicrobial therapy may reduce the burden of UTIs in pregnant women, but prevention is the key element.
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Affiliation(s)
- Aidyn G Salmanov
- SHUPYK NATIONAL HEALTHCARE UNIVERSITY OF UKRAINE, KYIV, UKRAINE; INSTITUTE OF PEDIATRICS, OBSTETRICS AND GYNECOLOGY OF THE NATIONAL ACADEMY OF MEDICAL SCIENCES OF UKRAINE, KYIV, UKRAINE
| | | | | | | | | | - Victor O Rud
- NATIONAL PIROGOV MEMORIAL MEDICAL UNIVERSITY, VINNYTSIA, UKRAINE
| | - Oleksandr A Voloshyn
- SHUPYK NATIONAL HEALTHCARE UNIVERSITY OF UKRAINE, KYIV, UKRAINE; KYIV REGIONAL MATERNITY HOSPITAL, KYIV, UKRAINE
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Lester R, Musicha P, Kawaza K, Langton J, Mango J, Mangochi H, Bakali W, Pearse O, Mallewa J, Denis B, Bilima S, Gordon SB, Lalloo DG, Jewell CP, Feasey NA. Effect of resistance to third-generation cephalosporins on morbidity and mortality from bloodstream infections in Blantyre, Malawi: a prospective cohort study. THE LANCET. MICROBE 2022; 3:e922-e930. [PMID: 36335953 PMCID: PMC9712123 DOI: 10.1016/s2666-5247(22)00282-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 09/13/2022] [Accepted: 09/13/2022] [Indexed: 11/06/2022]
Abstract
BACKGROUND The burden of antimicrobial resistance is a major threat to global health; however, prospective clinical outcome data from Africa are scarce. In Malawi, third-generation cephalosporins are the antibiotics of choice in patients admitted to hospital despite a rapid proliferation of resistance to these drugs. We aimed to quantify the effect of resistance to third-generation cephalosporins on mortality and length of hospital stay among patients with bloodstream infections. METHODS We did a prospective cohort study of patients admitted to Queen Elizabeth Central Hospital in Blantyre, Malawi. Patients of all ages who had positive blood cultures for Enterobacterales were included, with the exception of those from the genus Salmonella, and were followed up for 180 days. We characterised blood culture isolates using whole-genome sequencing and used Cox regression models to estimate the effect of resistance to third-generation cephalosporins on length of hospital stay, in-hospital mortality, and survival. FINDINGS Between Jan 31, 2018, and Jan 13, 2020, we recruited 326 patients, from whom 220 (68%) of 326 isolates were resistant to third-generation cephalosporins. The case fatality proportion was 45% (99 of 220) in patients with bloodstream infections that were resistant to third-generation cephalosporins, and 34% (36 of 106) in patients with bloodstream infections that were sensitive to third-generation cephalosporins. Resistance to third-generation cephalosporins was associated with an increased probability of in-hospital mortality (hazard ratio [HR] 1·44, 95% CI 1·02-2·04), longer hospital stays (1·5 days, 1·0-2·0) and decreased probability of discharge alive (HR 0·31, 0·22-0·45). Whole-genome sequencing showed a high diversity of sequence types of both Escherichia coli and Klebsiella pneumoniae. Although isolates associated with death were distributed across clades, we identified three E coli clades (ST410, ST617, and ST648) that were isolated from 14 patients who all died. INTERPRETATION Resistance to third-generation cephalosporins is associated with increased mortality and longer hospital stays in patients with bloodstream infections in Malawi. These data show the urgent need for allocation of resources towards antimicrobial resistance mitigation strategies in Africa. FUNDING Wellcome Trust and Wellcome Asia and Africa Programme.
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Affiliation(s)
- Rebecca Lester
- Malawi-Liverpool Wellcome Research Programme, Kamuzu University of Health Sciences, Blantyre, Malawi; Department of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, UK.
| | - Patrick Musicha
- Malawi-Liverpool Wellcome Research Programme, Kamuzu University of Health Sciences, Blantyre, Malawi; Parasites and Microbes Programme, Wellcome Sanger Institute, Hinxton, UK
| | - Kondwani Kawaza
- Department of Paediatrics and Child Health, Kamuzu University of Health Sciences, Blantyre, Malawi
| | - Josephine Langton
- Department of Paediatrics and Child Health, Kamuzu University of Health Sciences, Blantyre, Malawi
| | - James Mango
- Malawi-Liverpool Wellcome Research Programme, Kamuzu University of Health Sciences, Blantyre, Malawi
| | - Helen Mangochi
- Malawi-Liverpool Wellcome Research Programme, Kamuzu University of Health Sciences, Blantyre, Malawi
| | - Winnie Bakali
- Malawi-Liverpool Wellcome Research Programme, Kamuzu University of Health Sciences, Blantyre, Malawi
| | - Oliver Pearse
- Malawi-Liverpool Wellcome Research Programme, Kamuzu University of Health Sciences, Blantyre, Malawi; Department of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, UK
| | - Jane Mallewa
- Department of Medicine, Kamuzu University of Health Sciences, Blantyre, Malawi; Department of Medicine, Queen Elizabeth Central Hospital, Blantyre, Malawi
| | - Brigitte Denis
- Malawi-Liverpool Wellcome Research Programme, Kamuzu University of Health Sciences, Blantyre, Malawi
| | - Sithembile Bilima
- Malawi-Liverpool Wellcome Research Programme, Kamuzu University of Health Sciences, Blantyre, Malawi
| | - Stephen B Gordon
- Malawi-Liverpool Wellcome Research Programme, Kamuzu University of Health Sciences, Blantyre, Malawi; Department of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, UK
| | - David G Lalloo
- Department of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, UK
| | - Christopher P Jewell
- Centre for Health Informatics, Computing and Statistics, Lancaster University, Lancaster, UK
| | - Nicholas A Feasey
- Malawi-Liverpool Wellcome Research Programme, Kamuzu University of Health Sciences, Blantyre, Malawi; Department of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, UK
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Schechner V, Wulffhart L, Temkin E, Feldman SF, Nutman A, Shitrit P, Schwaber MJ, Carmeli Y. One-year mortality and years of potential life lost following bloodstream infection among adults: A nation-wide population based study. Lancet Reg Health Eur 2022; 23:100511. [PMID: 36158527 PMCID: PMC9490098 DOI: 10.1016/j.lanepe.2022.100511] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Background Limited data exist on long-term consequences of bloodstream infections (BSIs). We aimed to examine incidence, 1-year mortality, and years of potential life lost (YPLL) following BSI. We estimated the relative contribution of hospital-onset BSI (HO-BSI) and antibiotic-resistant BSI to incidence, mortality and YPLL. Methods We used data from Israel's national BSI surveillance system (covering eight sentinel bacteria, comprising 70% of all BSIs) and the national death registry. Adults with BSI between January 2018 and December 2019 were included. The outcomes were all-cause 30-day and 1-year mortality, with no adjustment for co-morbidities. We calculated the age-standardized mortality rate and YPLL using the Global Burden of Disease reference population and life expectancy tables. Findings In total, 25,376 BSIs occurred over 2 years (mean adult population: 6,068,580). The annual incidence was 209·1 BSIs (95% CI 206·5–211·7) per 100,000 population. The case fatality rate was 25·6% (95% CI 25·0-26·2) at 30 days and 46·4% (95% CI 45·5-47·2) at 1 year. The hazard of death increased by 30% for each decade of age (HR=1·3 [95% CI 1·2-1·3]). The annual age-standardized mortality rate and YPLL per 100,000 were 50·8 (95% CI 49·7-51·9) and 1,012·6 (95% CI 986·9-1,038·3), respectively. HO-BSI (6,962 events) represented 27·4% (95% CI 26·9-28·0) of BSIs, 33·9% (95% CI 32·6-35·0) of deaths and 39·9% (95% CI 39·5-40·2) of YPLL. HO-BSI by drug-resistant bacteria (3,072 events) represented 12·1% (95% CI 11·7-12·5) of BSIs, 15·6% (95% CI 14·7-16·5) of deaths, and 18·4% (95% CI 18·1-18·7) of YPLL. Interpretation One-year mortality following BSI is high. The burden of BSI is similar to that of ischemic stroke. HO-BSI and drug-resistant BSI contribute disproportionately to BSI mortality and YPLL. Funding None.
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22
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Sun G, Zhang Q, Dong Z, Dong D, Fang H, Wang C, Dong Y, Wu J, Tan X, Zhu P, Wan Y. Antibiotic resistant bacteria: A bibliometric review of literature. Front Public Health 2022; 10:1002015. [PMID: 36466520 PMCID: PMC9713414 DOI: 10.3389/fpubh.2022.1002015] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Accepted: 10/20/2022] [Indexed: 11/18/2022] Open
Abstract
Antibiotic-resistant bacteria (ARB) are a serious threat to the health of people and the ecological environment. With this problem becoming more and more serious, more countries made research on the ARB, and the research number has been sharply increased particularly over the past decade. Therefore, it is quite necessary to globally retrace relevant researches on the ARB published from 2010 to 2020. This will help researchers to understand the current research situation, research trends and research hotspots in this field. This paper uses bibliometrics to examine publications in the field of ARB from 2010 to 2020 that were retrieved from the Web of Science (WOS). Our study performed a statistical analysis of the countries, institutions, journals, authors, research areas, author keywords, Essential Science Indicators (ESI) highly cited papers, and ESI hotspots papers to provide an overview of the ARB field as well as research trends, research hotspots, and future research directions in the field. The results showed that the number of related studies is increasing year by year; the USA is most published in the field of ARB; China is the most active in this field in the recent years; the Chinese Acad Sci published the most articles; Sci. Total Environ. published the greatest number of articles; CM Manaia has the most contributions; Environmental Sciences and Ecology is the most popular research area; and "antibiotic resistance," "antibiotics," and "antibiotic resistance genes" were the most frequently occurring author keywords. A citation analysis showed that aquatic environment-related antibiotic resistance is a key research area in this field, while antimicrobial nanomaterial-related research is a recent popular topic.
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Affiliation(s)
- Guojun Sun
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, China
| | - Qian Zhang
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, China
| | - Zuojun Dong
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, China
| | - Dashun Dong
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, China
| | - Hui Fang
- Institute of Information Resource, Zhejiang University of Technology, Hangzhou, China
| | - Chaojun Wang
- Hangzhou Aeronautical Sanatorium for Special Service of Chinese Air Force, Hangzhou, China
| | - Yichen Dong
- Department of Chinese Medicine, Macau University of Science and Technology, Taipa, Macau SAR, China
| | - Jiezhou Wu
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, China
| | - Xuanzhe Tan
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, China
| | - Peiyao Zhu
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, China
| | - Yuehua Wan
- Institute of Information Resource, Zhejiang University of Technology, Hangzhou, China
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23
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Microbiology and Clinical Outcome of Hospital-Acquired Respiratory Infections in an Italian Teaching Hospital: A Retrospective Study. Healthcare (Basel) 2022; 10:healthcare10112271. [PMID: 36421594 PMCID: PMC9691183 DOI: 10.3390/healthcare10112271] [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: 10/06/2022] [Revised: 11/03/2022] [Accepted: 11/09/2022] [Indexed: 11/16/2022] Open
Abstract
The burden, microbial etiology and clinical impact of hospital-acquired respiratory infections (HARIs) were determined at an Italian teaching hospital over a 12-month period. For this purpose, overall ordinary hospitalizations ≥ 2 days of subjects over 18 years old with discharge from 1 January 2018 to 31 December 2018 were examined by cross-referencing demographic and clinical data from hospital discharge forms with microbiological data from the computer system of the Microbiology Unit. We identified 329 individuals with HARIs (96 females and 233 males; median age 70 years, range 18−93), who represented ¼ of the total hospital-acquired infections (HAIs) in the period. The inpatient setting was medical and surgical in similar proportions (169 vs. 160, respectively) and the mean hospital stay was 38.9 ± 33.6 days. One hundred and forty patients (42.6% of the total sample) were suffering from one or more chronic diseases. A total of 581 microorganisms (82 antibiotic-resistant and 499 non-resistant) were detected in HARI patients. The most common isolated species were Staphylococcus aureus (16.7%), Klebsiella pneumoniae (13.3%), Pseudomonas spp. (12.6%) and Acinetobacter baumannii (10.5%), followed by Enterobacter spp. (5.3%), Escherichia coli (5.2%) and Enterococcus spp. (4.8%). One hundred and sixty-seven individuals (49.0% of the total) had polymicrobial infections. One hundred thirty-one patients (39.8% of the total) underwent endotracheal intubation and mechanical ventilation and 62.6% of them died, compared to 17.7% of the non-intubated patients. Multivariable analysis confirmed a positive correlation between death and increased age (p = 0.05), surgical MDC (p = 0.007), number of microorganisms over the sample mean (p = 0.001), the presence of chronic diseases (p = 0.046), and intubation and mechanical ventilation (p < 0.0001). A positive correlation between intubation and antibiotic-resistant organisms (p = 0.003) was also found. HARIs are still a major public health problem and require constant surveillance due to their severe clinical outcome.
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Ebrahim AE, Abd El-Aziz NK, Elariny EYT, Shindia A, Osman A, Hozzein WN, Alkhalifah DHM, El-Hossary D. Antibacterial activity of bioactive compounds extracted from red kidney bean (Phaseolus vulgaris L.) seeds against multidrug-resistant Enterobacterales. Front Microbiol 2022; 13:1035586. [PMID: 36419436 PMCID: PMC9676267 DOI: 10.3389/fmicb.2022.1035586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 10/17/2022] [Indexed: 11/09/2022] Open
Abstract
In the present study, biologically active compounds such as phenolic-rich extract (PRE), 7S globulin (vicilin), and 11S globulin (legumin) from red kidney bean (Phaseolus vulgaris L.) seeds were extracted and evaluated as antibacterial agents against multidrug-resistant (MDR) Enterobacterales isolated from both animal and human sources. The overall occurrence rate of Enterobacterales was 43.6%, which significantly differed between animal (38.75%) and human (56.67%) sources. Antimicrobial susceptibility testing revealed that Enterobacterales isolates exhibited full resistance (100%) to amoxicillin-clavulanic acid, followed by ampicillin (75.44%), erythromycin (71.93%), cefoxitin (70.18%), amoxicillin (66.66%), ceftriaxone (64.91%), and trimethoprim/sulfamethoxazole (56.14%). Worthy of note, 97.92% of Enterobacterales isolates were MDR. The total phenolic contents (TPC; 53 ± 2 mg GAE g-1) and total flavonoid contents (TFC; 26 ± 1 mg QE g-1) were recorded. The major phenolic and flavonoid components were catechol (17.63 μg/mL) and hesperidin (11.37 μg/mL), respectively. Sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) was performed to detect the 7S and 11S globulin‘s molecular mass. The data revealed that red kidney bean protein isolate (KPI) includes two major portions: 7S and 11S globulins. The bioactive compounds of Phaseolus vulgaris were investigated for their antibacterial activities against Enterobacterales for the first time. The protein component (MIC = 0.125 – 2 μg/mL; 53.85%) and its 7S and 11S globulin subunits (MIC = 0.5 – 2 μg/mL; 30.77% each) were the most potent extracts, whereas the methanolic extract was the least effective one (MIC = 2 μg/mL; 15.38%). The results displayed the potential of protein bioactive compounds as a hopeful candidate for enhancing future medication plans for the treatment of Enterobacterales originating from animal and human sources.
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Affiliation(s)
- Azhar E. Ebrahim
- Department of Botany and Microbiology, Faculty of Science, Zagazig University, Zagazig, Egypt
| | - Norhan K. Abd El-Aziz
- Department of Microbiology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
- *Correspondence: Norhan K. Abd El-Aziz, ;
| | - Eman Y. T. Elariny
- Department of Botany and Microbiology, Faculty of Science, Zagazig University, Zagazig, Egypt
| | - Ahmed Shindia
- Department of Botany and Microbiology, Faculty of Science, Zagazig University, Zagazig, Egypt
| | - Ali Osman
- Department of Biochemistry, Faculty of Agriculture, Zagazig University, Zagazig, Egypt
| | - Wael N. Hozzein
- Department of Botany and Microbiology, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
| | - Dalal Hussien M. Alkhalifah
- Department of Biology, College of Science, Princess Nourah Bint Abdul Rahman University, Riyadh, Saudi Arabia
| | - Dalia El-Hossary
- Department of Medical Microbiology and Immunology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
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Mestrovic T, Robles Aguilar G, Swetschinski LR, Ikuta KS, Gray AP, Davis Weaver N, Han C, Wool EE, Gershberg Hayoon A, Hay SI, Dolecek C, Sartorius B, Murray CJL, Addo IY, Ahinkorah BO, Ahmed A, Aldeyab MA, Allel K, Ancuceanu R, Anyasodor AE, Ausloos M, Barra F, Bhagavathula AS, Bhandari D, Bhaskar S, Cruz-Martins N, Dastiridou A, Dokova K, Dubljanin E, Durojaiye OC, Fagbamigbe AF, Ferrero S, Gaal PA, Gupta VB, Gupta VK, Gupta VK, Herteliu C, Hussain S, Ilic IM, Ilic MD, Jamshidi E, Joo T, Karch A, Kisa A, Kisa S, Kostyanev T, Kyu HH, Lám J, Lopes G, Mathioudakis AG, Mentis AFA, Michalek IM, Moni MA, Moore CE, Mulita F, Negoi I, Negoi RI, Palicz T, Pana A, Perdigão J, Petcu IR, Rabiee N, Rawaf DL, Rawaf S, Shakhmardanov MZ, Sheikh A, Silva LMLR, Skryabin VY, Skryabina AA, Socea B, Stergachis A, Stoeva TZ, Sumi CD, Thiyagarajan A, Tovani-Palone MR, Yesiltepe M, Zaman SB, Naghavi M. The burden of bacterial antimicrobial resistance in the WHO European region in 2019: a cross-country systematic analysis. Lancet Public Health 2022; 7:e897-e913. [PMID: 36244350 PMCID: PMC9630253 DOI: 10.1016/s2468-2667(22)00225-0] [Citation(s) in RCA: 85] [Impact Index Per Article: 42.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 08/23/2022] [Accepted: 08/24/2022] [Indexed: 11/06/2022]
Abstract
BACKGROUND Antimicrobial resistance (AMR) represents one of the most crucial threats to public health and modern health care. Previous studies have identified challenges with estimating the magnitude of the problem and its downstream effect on human health and mortality. To our knowledge, this study presents the most comprehensive set of regional and country-level estimates of AMR burden in the WHO European region to date. METHODS We estimated deaths and disability-adjusted life-years attributable to and associated with AMR for 23 bacterial pathogens and 88 pathogen-drug combinations for the WHO European region and its countries in 2019. Our methodological approach consisted of five broad components: the number of deaths in which infection had a role, the proportion of infectious deaths attributable to a given infectious syndrome, the proportion of infectious syndrome deaths attributable to a given pathogen, the percentage of a given pathogen resistant to an antimicrobial drug of interest, and the excess risk of mortality (or duration of an infection) associated with this resistance. These components were then used to estimate the disease burden by using two counterfactual scenarios: deaths attributable to AMR (considering an alternative scenario where infections with resistant pathogens are replaced with susceptible ones) and deaths associated with AMR (considering an alternative scenario where drug-resistant infections would not occur at all). Data were solicited from a wide array of international stakeholders; these included research hospitals, surveillance networks, and infection databases maintained by private laboratories and medical technology companies. We generated 95% uncertainty intervals (UIs) for final estimates as the 25th and 975th ordered values across 1000 posterior draws, and models were cross-validated for out-of-sample predictive validity. FINDINGS We estimated 541 000 deaths (95% UI 370 000-763 000) associated with bacterial AMR and 133 000 deaths (90 100-188 000) attributable to bacterial AMR in the whole WHO European region in 2019. The largest fatal burden of AMR in the region came from bloodstream infections, with 195 000 deaths (104 000-333 000) associated with resistance, followed by intra-abdominal infections (127 000 deaths [81 900-185 000]) and respiratory infections (120 000 deaths [94 500-154 000]). Seven leading pathogens were responsible for about 457 000 deaths associated with resistance in 53 countries of this region; these pathogens were, in descending order of mortality, Escherichia coli, Staphylococcus aureus, Klebsiella pneumoniae, Pseudomonas aeruginosa, Enterococcus faecium, Streptococcus pneumoniae, and Acinetobacter baumannii. Methicillin-resistant S aureus was shown to be the leading pathogen-drug combination in 27 countries for deaths attributable to AMR, while aminopenicillin-resistant E coli predominated in 47 countries for deaths associated with AMR. INTERPRETATION The high levels of resistance for several important bacterial pathogens and pathogen-drug combinations, together with the high mortality rates associated with these pathogens, show that AMR is a serious threat to public health in the WHO European region. Our regional and cross-country analyses open the door for strategies that can be tailored to leading pathogen-drug combinations and the available resources in a specific location. These results underscore that the most effective way to tackle AMR in this region will require targeted efforts and investments in conjunction with continuous outcome-based research endeavours. FUNDING Bill & Melinda Gates Foundation, Wellcome Trust, and Department of Health and Social Care using UK aid funding managed by the Fleming Fund.
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26
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Kelm M, Kusan S, Surat G, Anger F, Reibetanz J, Germer CT, Schlegel N, Flemming S. Disease- and Medication-Specific Differences of the Microbial Spectrum in Perianal Fistulizing Crohn's Disease-Relevant Aspects for Antibiotic Therapy. Biomedicines 2022; 10:2682. [PMID: 36359202 PMCID: PMC9687552 DOI: 10.3390/biomedicines10112682] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Revised: 10/14/2022] [Accepted: 10/20/2022] [Indexed: 08/27/2023] Open
Abstract
Perianal fistulizing Crohn's Disease (CD) with abscess formation represents an aggressive phenotype in Inflammatory Bowel Disease (IBD) with increased morbidity. Treatment is multidisciplinary and includes antibiotics, but knowledge about the microbial spectrum is rare often resulting in inadequate antimicrobial therapy. In this single center retrospective study, all patients who were operated due to perianal abscess formation were retrospectively analyzed and the microbial spectrum evaluated. Patients were divided into a CD and non-CD group with further subgroup analysis. 138 patients were finally included in the analysis with 62 patients suffering from CD. Relevant differences were detected for the microbial spectrum with anaerobic bacteria being significantly more often isolated from non-CD patients. In a subgroup-analysis of CD patients only, medical therapy had a relevant effect on the microbial spectrum since Streptococcus groups and Enterobacterales were significantly more often isolated in patients treated with steroids compared to those being treated by antibodies. In conclusion, the microbial spectrum of patients suffering from CD varies significantly from non-CD patients and immunosuppressive medication has a relevant effect on isolated pathogens. Based on that, adaption of antibiotic treatment might be discussed in the future.
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Affiliation(s)
- Matthias Kelm
- Department of General, Visceral, Transplant, Vascular and Pediatric Surgery, University Hospital of Wuerzburg, 97080 Wuerzburg, Germany
| | - Simon Kusan
- Department of General, Visceral, Transplant, Vascular and Pediatric Surgery, University Hospital of Wuerzburg, 97080 Wuerzburg, Germany
| | - Güzin Surat
- Unit for Infection Control and Antimicrobial Stewardship, University Hospital of Wuerzburg, 97080 Wuerzburg, Germany
| | - Friedrich Anger
- Department of General, Visceral, Transplant, Vascular and Pediatric Surgery, University Hospital of Wuerzburg, 97080 Wuerzburg, Germany
| | - Joachim Reibetanz
- Department of General, Visceral, Transplant, Vascular and Pediatric Surgery, University Hospital of Wuerzburg, 97080 Wuerzburg, Germany
| | - Christoph-Thomas Germer
- Department of General, Visceral, Transplant, Vascular and Pediatric Surgery, University Hospital of Wuerzburg, 97080 Wuerzburg, Germany
| | - Nicolas Schlegel
- Department of General, Visceral, Transplant, Vascular and Pediatric Surgery, University Hospital of Wuerzburg, 97080 Wuerzburg, Germany
| | - Sven Flemming
- Department of General, Visceral, Transplant, Vascular and Pediatric Surgery, University Hospital of Wuerzburg, 97080 Wuerzburg, Germany
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Sharma M, Yadav A, Dubey KK, Tipple J, Das DB. Decentralized systems for the treatment of antimicrobial compounds released from hospital aquatic wastes. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 840:156569. [PMID: 35690196 DOI: 10.1016/j.scitotenv.2022.156569] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 06/04/2022] [Accepted: 06/05/2022] [Indexed: 06/15/2023]
Abstract
In many developing countries, untreated hospital effluents are discharged and treated simultaneously with municipal wastewater. However, if the hospital effluents are not treated separately, they pose concerning health risks due to the possible transport of the antimicrobial genes and microbes in the environment. Such effluent is considered as a point source for a number of potentially infectious microorganisms, waste antimicrobial compounds and other contaminants that could promote antimicrobial resistance development. The removal of these contaminants prior to discharge reduces the exposure of antimicrobials to the environment and this should lower the risk of superbug development. At an effluent discharge site, suitable pre-treatment of wastewater containing antimicrobials could maximise the ecological impact with potentially reduced risk to human health. In addressing these points, this paper reviews the applications of decentralized treatment systems toward reducing the concentration of antimicrobials in wastewater. The most commonly used techniques in decentralized wastewater treatment systems for onsite removal of antimicrobials were discussed and evidence suggests that hybrid techniques should be more useful for the efficient removal of antimicrobials. It is concluded that alongside the cooperation of administration departments, health industries, water treatment authorities and general public, decentralized treatment technology can efficiently enhance the removal of antimicrobial compounds, thereby decreasing the concentration of contaminants released to the environment that could pose risks to human and ecological health due to development of antimicrobial resistance in microbes.
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Affiliation(s)
- Manisha Sharma
- Bioprocess Engineering Laboratory, Department of Biotechnology, Central University of Haryana, Mahendergarh, Haryana 123031, India
| | - Ankush Yadav
- Bioprocess Engineering Laboratory, Department of Biotechnology, Central University of Haryana, Mahendergarh, Haryana 123031, India
| | - Kashyap Kumar Dubey
- Bioprocess Engineering Laboratory, School of Biotechnology, Jawaharlal Nehru University, New Delhi 110067, India.
| | - Joshua Tipple
- Department of Chemical Engineering, Loughborough University, Loughborough LE11 3TU, United Kingdom
| | - Diganta Bhusan Das
- Department of Chemical Engineering, Loughborough University, Loughborough LE11 3TU, United Kingdom.
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Shoji T, Muto R, Fukuda H, Muraki Y, Kawata K, Akazawa M. Cost and healthcare utilization of methicillin-resistant Staphylococcus aureus bacteremia estimated from linked antimicrobial resistance surveillance and hospital claims data in Japan. ANTIMICROBIAL STEWARDSHIP & HEALTHCARE EPIDEMIOLOGY : ASHE 2022; 2:e147. [PMID: 36483379 PMCID: PMC9726553 DOI: 10.1017/ash.2022.280] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 07/05/2022] [Accepted: 07/06/2022] [Indexed: 06/17/2023]
Abstract
OBJECTIVE To compare the incremental costs and healthcare utilization of methicillin-resistant Staphylococcus aureus (MRSA) bacteremia with those of methicillin-susceptible S. aureus (MSSA) bacteremia. DESIGN Retrospective cohort study using data from April 2014 to March 2015. SETTING Antimicrobial resistance surveillance and hospital claims data from 16 Japanese hospitals. PATIENTS The study included 73 patients with S. aureus bacteremia: 23 with MRSA and 50 with MSSA. METHODS MRSA bacteremia was identified using blood cultures and drug-susceptibility tests. MRSA- and MSSA-related medical practices were evaluated. The costs were calculated and compared. All the medical costs were classified into empirical and definitive therapy periods and expressed in Japanese yen (JPY, 1 USD = 106 JPY). Additionally, costs at aggressive and passive bacterial test-performing facilities were compared. RESULTS No significant differences existed in MRSA-related resource use per patient episode between MRSA and MSSA bacteremia during empirical therapy. However, during definitive therapy, in MRSA bacteremia compared with MSSA bacteremia, this difference was higher. The average MRSA-related costs of empirical therapy for MRSA and MSSA were 13,380 and 9,140 JPY (126 and 86 USD) per patient, and for definitive therapy, they were 69,810 and 29,510 JPY (659 and 278 USD) per patient, respectively. No significant differences were noted. Conversely, the average examination costs during definitive therapy differed significantly: 9,740 vs 3,850 JPY (92 vs 36 USD), respectively (P = .0294). Furthermore, the incremental costs in aggressive facilities were lower for the definitive therapy period than those in passive facilities. CONCLUSIONS In the definitive therapy period, MRSA bacteremia had higher incremental costs and greater use of healthcare resources. In addition, the incremental costs in aggressive facilities were lower than those in passive facilities.
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Affiliation(s)
- Tomokazu Shoji
- Department of Public Health and Epidemiology, Meiji Pharmaceutical University, Tokyo, Japan
- Department of Pharmacy, University of Yamanashi Hospital, Yamanashi, Japan
| | - Ryusei Muto
- Department of Public Health and Epidemiology, Meiji Pharmaceutical University, Tokyo, Japan
| | - Haruhisa Fukuda
- Department of Health Care Administration and Management, Graduate School of Medical Sciences Kyushu University, Fukuoka, Japan
| | - Yuichi Muraki
- Department of Clinical Pharmacoepidemiology, Kyoto Pharmaceutical University, KyotoJapan
| | - Keishi Kawata
- Department of Pharmacy, University of Yamanashi Hospital, Yamanashi, Japan
| | - Manabu Akazawa
- Department of Public Health and Epidemiology, Meiji Pharmaceutical University, Tokyo, Japan
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The Population Genomics of Increased Virulence and Antibiotic Resistance in Human Commensal Escherichia coli over 30 Years in France. Appl Environ Microbiol 2022; 88:e0066422. [PMID: 35862685 PMCID: PMC9361829 DOI: 10.1128/aem.00664-22] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Escherichia coli is a commensal species of the lower intestine but is also a major pathogen causing intestinal and extraintestinal infections that is increasingly prevalent and resistant to antibiotics. Most studies on genomic evolution of E. coli used isolates from infections. Here, instead, we whole-genome sequenced a collection of 403 commensal E. coli isolates from fecal samples of healthy adult volunteers in France (1980 to 2010). These isolates were distributed mainly in phylogroups A and B2 (30% each) and belonged to 152 sequence types (STs), the five most frequent being ST10 (phylogroup A; 16.3%), ST73 and ST95 (phylogroup B2; 6.3 and 5.0%, respectively), ST69 (phylogroup D; 4.2%), and ST59 (phylogroup F; 3.9%), and 224 O:H serotypes. ST and serotype diversity increased over time. The O1, O2, O6, and O25 groups used in bioconjugate O-antigen vaccine against extraintestinal infections were found in 23% of the strains of our collection. The increase in frequency of virulence-associated genes and antibiotic resistance was driven by two evolutionary mechanisms. Evolution of virulence gene frequency was driven by both clonal expansion of STs with more virulence genes ("ST-driven") and increases in gene frequency within STs independent of changes in ST frequencies ("gene-driven"). In contrast, the evolution of resistance was dominated by increases in frequency within STs ("gene-driven"). This study provides a unique picture of the phylogenomic evolution of E. coli in its human commensal habitat over 30 years and will have implications for the development of preventive strategies. IMPORTANCE Escherichia coli is an opportunistic pathogen with the greatest burden of antibiotic resistance, one of the main causes of bacterial infections and an increasing concern in an aging population. Deciphering the evolutionary dynamics of virulence and antibiotic resistance in commensal E. coli is important to understand adaptation and anticipate future changes. The gut of vertebrates is the primary habitat of E. coli and probably where selection for virulence and resistance takes place. Unfortunately, most whole-genome-sequenced strains are isolated from pathogenic conditions. Here, we whole-genome sequenced 403 E. coli commensals isolated from healthy French subjects over a 30-year period. Virulence genes increased in frequency by both clonal expansion of clones carrying them and increases in frequency within clones, whereas resistance genes increased by within-clone increased frequency. Prospective studies of E. coli commensals should be performed worldwide to have a broader picture of evolution and adaptation of this species.
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Kusan S, Surat G, Kelm M, Anger F, Kim M, Germer CT, Schlegel N, Flemming S. Microbial Spectrum and Antibiotic Resistance in Patients Suffering from Penetrating Crohn's Disease. J Clin Med 2022; 11:jcm11154343. [PMID: 35893433 PMCID: PMC9330589 DOI: 10.3390/jcm11154343] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 07/20/2022] [Accepted: 07/25/2022] [Indexed: 01/27/2023] Open
Abstract
Intraabdominal abscess formation occurs in up to 30% of patients suffering from Crohn´s disease (CD). While international guidelines recommend a step-up approach with a combination of empiric antibiotic therapy and percutaneous drainage to delay or even avoid surgery, evidence about microbial spectrum in penetrating ileitis is sparse. We retrospectively assessed outcomes of 46 patients with terminal penetrating Ileitis where microbial diagnostics have been performed and compared microbial spectrum and antibiotic resistance profile of CD patients with patients suffering from diverticulitis with intraabdominal abscess formation. In both groups, the most frequently isolated pathogen was the gram-negative bacterium E. coli belonging to the family of Enterobacterales. However, overall Enterobacterales were significantly more often verifiable in the control group than in CD patients. Furthermore, microbial analysis showed significant differences regarding isolation of anaerobic pathogens with decreased frequency in patients with CD. Subgroup analysis of CD patients to evaluate a potential influence of immunosuppressive therapy on microbial spectrum only revealed that Enterobacterales was less frequently detected in patients treated with steroids. Immunosuppressive therapy did not show any impact on all other groups of pathogens and did not change antibiotic resistance profile of CD patients. In conclusion, we were able to demonstrate that the microbial spectrum of CD patients does differ only for some pathogen species without increased rate of antibiotic resistance. However, the empiric antibiotic therapy for CD-associated intra-abdominal abscess remains challenging since different points such as local epidemiological and microbiological data, individual patient risk factors, severity of infection, and therapy algorithm including non-surgical and surgical therapy options should be considered before therapeutical decisions are made.
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Affiliation(s)
- Simon Kusan
- Department of General, Visceral, Transplantation, Vascular and Pediatric Surgery, Center of Operative Medicine (ZOM), University Hospital of Wuerzburg, 97080 Wuerzburg, Germany; (S.K.); (M.K.); (F.A.); (M.K.); (C.-T.G.); (N.S.)
| | - Güzin Surat
- Unit for Infection Control and Antimicrobial Stewardship, University Hospital of Wuerzburg, 97080 Wuerzburg, Germany;
| | - Matthias Kelm
- Department of General, Visceral, Transplantation, Vascular and Pediatric Surgery, Center of Operative Medicine (ZOM), University Hospital of Wuerzburg, 97080 Wuerzburg, Germany; (S.K.); (M.K.); (F.A.); (M.K.); (C.-T.G.); (N.S.)
| | - Friedrich Anger
- Department of General, Visceral, Transplantation, Vascular and Pediatric Surgery, Center of Operative Medicine (ZOM), University Hospital of Wuerzburg, 97080 Wuerzburg, Germany; (S.K.); (M.K.); (F.A.); (M.K.); (C.-T.G.); (N.S.)
| | - Mia Kim
- Department of General, Visceral, Transplantation, Vascular and Pediatric Surgery, Center of Operative Medicine (ZOM), University Hospital of Wuerzburg, 97080 Wuerzburg, Germany; (S.K.); (M.K.); (F.A.); (M.K.); (C.-T.G.); (N.S.)
| | - Christoph-Thomas Germer
- Department of General, Visceral, Transplantation, Vascular and Pediatric Surgery, Center of Operative Medicine (ZOM), University Hospital of Wuerzburg, 97080 Wuerzburg, Germany; (S.K.); (M.K.); (F.A.); (M.K.); (C.-T.G.); (N.S.)
| | - Nicolas Schlegel
- Department of General, Visceral, Transplantation, Vascular and Pediatric Surgery, Center of Operative Medicine (ZOM), University Hospital of Wuerzburg, 97080 Wuerzburg, Germany; (S.K.); (M.K.); (F.A.); (M.K.); (C.-T.G.); (N.S.)
| | - Sven Flemming
- Department of General, Visceral, Transplantation, Vascular and Pediatric Surgery, Center of Operative Medicine (ZOM), University Hospital of Wuerzburg, 97080 Wuerzburg, Germany; (S.K.); (M.K.); (F.A.); (M.K.); (C.-T.G.); (N.S.)
- Correspondence:
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Mocherniuk MM, Kukhtyn MD, Horiuk YV, Horiuk VV, Tsvigun OA, Tokarchuk TS. Microflora of boxes for holding veterinary patients in clinics. REGULATORY MECHANISMS IN BIOSYSTEMS 2022. [DOI: 10.15421/022233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
A significant element of the prophylaxis of nosocomial infection in veterinary clinics is monitoring ambient objects, air, equipment, and instruments. In order to determine the role of boxes for keeping ill animals as a source of transmission of pathogens of nosocomial infections in veterinary clinics, we studied the microflora of surfaces of boxes and bioaerosol prior and after sanitation. For this purpose, we collected rinses from the surfaces of plastic and steel boxes, air samples prior to morning sanitation, after cleaning and wiping the surfaces with water and detergents and after disinfection. From the surfaces of the boxes for holding animals, we mostly isolated bacteria of Staphylococcus spp., Streptococcus spp., Micrococcus spp., Corynebacterium spp., Enterococcus spp. and Bacillus spp. Gram-negative species we found were bacteria of Escherichia spp., Acinetobacter spp. and Enterobacter spp. After wet cleaning and disinfection of plastic boxes, we detected species of Staphylococcus spp. and Enterococcus spp. in 5.4% of the samples, Micrococcus spp. in 8.1% and Bacillus spp. in 2.7%. Gram-negative bacteria of Enterobacter spp. were found in 2.7% of the samples. At the same time, the number of microorganisms in samples in which the bacteria were found after disinfection on the surfaces of stainless-steel boxes was 2.0 times lower than in such from the surfaces of plastic boxes. We determined that after wet disinfection of boxes’ surfaces, there occurred decrease in the microbial number in the air, equaling 3.7 times on average, compared with prior to disinfection. The basis of the air microflora after disinfection comprised species of Micrococcus spp., Corynebacterium spp. and Staphylococcus spp., which can be airborne-transmitted. Bacteria that were isolated from the boxes after disinfection (Micrococcus spp., Staphylococcus spp.) formed highly dense biofilms, which probably ensure the survival of the microbial cells, thus making the boxes a probable source of nosocomial infection.
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Levofloxacin Cocrystal/Salt with Phthalimide and Caffeic Acid as Promising Solid-State Approach to Improve Antimicrobial Efficiency. Antibiotics (Basel) 2022; 11:antibiotics11060797. [PMID: 35740203 PMCID: PMC9220774 DOI: 10.3390/antibiotics11060797] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 06/06/2022] [Accepted: 06/09/2022] [Indexed: 02/01/2023] Open
Abstract
To overcome the issue of multidrug resistant (MDR) microbes, the exploration of ways to improve the antimicrobial efficiency of existing antibiotics is one of the promising approaches. In search of synthons with higher efficiency, in current investigations, cocrystal and amorphous salt of levofloxacin hemihydrate (LEV) were developed with phthalimide (PTH) and caffeic acid (CFA). New materials were characterized with the help of FT-IR, Raman spectroscopy, powder X-ray diffraction (PXRD), differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). Shifting, attenuation, appearance/disappearance and broadening of bands were observed in the FT-IR and Raman spectra of the materials as evidence of the required product. The PXRD diffraction pattern observed for LEV-PTH indicated cocrystal while halo diffractogram of LEV-CFA revealed amorphous nature. DSC/TG analysis confirmed the hydrated nature of the cocrystal/salt. The dissolution rate and antimicrobial activity against selected strains, K.pneumonia, E. coli and S. typhi of parent drug and the new material were compared. The zone of inhibition (ZI) observed for 5 µg LEV-PTH was 30.4 + 0.36 (K. pneumonia), 26.33 + 0.35 (E. coli) and 30.03 + 0.25 mm (S. typhi) while LEV-CFA salt (5 µg) against the same strains inhibited 33.96 ± 0.25, 31.66 ± 0.35 and 27.93 ± 0.40 mm, respectively. These novel formulations enhance the dissolution rate as well as antibacterial efficiency and are expected to be potent against MDR bacterial strains.
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Wang W, Wu F, Zhang Q, Zhou N, Zhang M, Zheng T, Li Y, Tang BZ. Aggregation-Induced Emission Nanoparticles for Single Near-Infrared Light-Triggered Photodynamic and Photothermal Antibacterial Therapy. ACS NANO 2022; 16:7961-7970. [PMID: 35504042 DOI: 10.1021/acsnano.2c00734] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Phototheranostics is a potential area for precision medicine, which has received increasing attention for antibacterial applications. Integrating all phototheranostic modalities in a single molecule and achieving precise spatial colocalization is a challenging task because of the complexity of energy dissipation and molecular design. Here, a type of quaternary amine functionalized aggregation-induced emission (AIE), AIEgen, was synthesized and used to produce singlet oxygen (1O2) and heat, which were used to eradicate the bacteria. With the introduction of the positive charge in AIEgen, AIE nanoparticles (AIE NPs) could selectively target bacteria. Notably, the AIE NPs displayed obvious antibacterial performance against Gram-positive bacteria (Staphylococcus aureus) and Gram-negative bacteria (Escherichia coli). The antibacterial rates of AIE NPs were as high as 99.9% and 99.8% for S. aureus and E. coli, respectively. Therefore, our results suggested the potential of AIE NPs acting as broad-spectrum antimicrobial materials, which provided a strategy for treating different microorganisms.
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Affiliation(s)
- Wentao Wang
- Jiangsu Collaborative Innovation Center for Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - Fan Wu
- School of Pharmacy, Nanjing Medical University, Nanjing 211166, People's Republic of China
| | - Qicheng Zhang
- Jiangsu Collaborative Innovation Center for Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - Ninglin Zhou
- Jiangsu Collaborative Innovation Center for Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - Ming Zhang
- Jiangsu Collaborative Innovation Center for Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - Tao Zheng
- Key Laboratory of Science and Technology of Eco-Textiles, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, People's Republic of China
| | - Yuanyuan Li
- College of Veterinary Medicine, Jilin University, Changchun 130062, People's Republic of China
| | - Ben Zhong Tang
- School of Science and Engineering, Shenzhen Institute of Aggregate Science and Technology, The Chinese University of Hong Kong, Shenzhen, Guangdong 518172, People's Republic of China
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Determining the Characteristics of Farms That Raise Pigs without Antibiotics. Animals (Basel) 2022; 12:ani12101224. [PMID: 35625070 PMCID: PMC9137792 DOI: 10.3390/ani12101224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 05/04/2022] [Accepted: 05/07/2022] [Indexed: 02/04/2023] Open
Abstract
Simple Summary Reduced and responsible antimicrobial use leads to a lower risk of developing antimicrobial resistance. One way to achieve this is to raise animals without antibiotics (RWA). This study described the criteria for a Belgian RWA program for pigs and evaluated whether farms could achieve and maintain this status. The study also identified possible differences between RWA and non-RWA farms. For this purpose, 28 farms were visited three times for the following reasons: (1) data collection, (2) farm-specific coaching, and (3) evaluation. Antimicrobial use, biosecurity, and farm characteristics were determined. The status of the farms, i.e., (non-)RWA, varied over time, and the distribution of RWA vs. non-RWA farms, was 10–18, 13–15, and 12–16 before the intervention, after coaching, and after one year, respectively. There were no significant differences in biosecurity status between RWA and non-RWA farms, but biosecurity improved in all farms throughout the study. RWA farms were smaller (median 200 sows) compared to non-RWA farms (median 350 sows). This study showed that farmers could achieve and maintain the RWA status through farm-specific coaching related to prudent AMU and improved biosecurity. Abstract Reduced and responsible antimicrobial use leads to a lower risk of developing antimicrobial resistance. Raised Without Antibiotics (RWA) is a certification label that is recognized in only a few countries, and it is often unclear what the specific criteria and characteristics of RWA farms are. The objectives of this study were to describe the criteria for a Belgian RWA program; to coach farms towards reduced antimicrobial usage (AMU); to assess if it was possible to obtain and maintain the RWA status; and to determine differences between RWA and conventional pig farms. Pig farms (n = 28) were visited three times for the following reasons: (1) data collection, (2) farm-specific coaching (2 months later), and (3) evaluation (7 months later). AMU was followed from before the start of the study up to one year after the last visit. AMU, biosecurity (Biocheck.UGentTM), and farm characteristics of (non-)RWA farms were compared. RWA was defined as no antibiotics from birth until slaughter. Pigs requiring individual treatment received a special ear tag and were excluded from the program. The status of the farms varied over time, and the distribution of RWA vs. non-RWA was 10–18, 13–15, and 12–16, before intervention, after coaching, and after one year, respectively. For the non-RWA farms, there was a reduction in AMU of 61%, 38%, and 23%, for the suckling piglets, fattening pigs, and sows, respectively, indicating that they were moving toward the RWA status. There were no significant differences in biosecurity status between RWA and non-RWA farms, but biosecurity improved in all farms throughout the study. RWA farms were smaller (median 200 sows) compared to non-RWA farms (median 350 sows). The 4-week system was used more in non-RWA farms, while the 3- and 5-week systems were used most often in RWA farms. This study showed that farmers could achieve and maintain the RWA status through farm-specific coaching related to prudent AMU and improved biosecurity.
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Hariyanto H, Yahya CQ, Cucunawangsih C, Pertiwi CLP. ANTIMICROBIAL RESISTANCE AND MORTALITY. Afr J Infect Dis 2022; 16:13-20. [PMID: 35582060 PMCID: PMC9097313 DOI: 10.21010/ajid.v16i2.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 04/06/2022] [Accepted: 04/06/2022] [Indexed: 11/25/2022] Open
Abstract
Background Antibiotic resistance has been a long-debated topic since decades ago. The development of stronger, newer antibiotics, implementation of antibiotic stewardship and revised guidelines remain the main focus of our society to prevent resistancy. But is it really resistancy that cause higher mortality to patients with multidrug resistance (MDR) infections? Methods We conducted a cohort retrospective study from 2016 to 2019 in our Intensive care unit (ICU). Antimicrobial susceptibility test (AST) results were analyzed for their association with patient mortality outcomes. Results Over the four-year period, 381 positive bacterial cultures were analyzed and 51% of them grew MDR pathogens upon their first culture. The overall mortality rate was 19% (38/195), and there was no significant association between MDR and mortality; p 0.387. A strong association was however found between patients with medical cases with an OR 1.76; CI 1.76-2.55; p 0.003 and those with APACHE scores ≥20 upon admittance to the ICU, OR 1.32; CI 1.68-8.29; p 0.001. Conclusion Resistancy is not the true cause of mortality. Infection by resistant microbes does not necessarily mean the worst outcome since virulency is the actual cause of pathogenicity, and thus mortality.
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Affiliation(s)
- Hori Hariyanto
- Universitas Pelita Harapan-Faculty of Medicine, Department of Anesthesiology and Intensive Care, Jl. M. H. Thamrin Boulevard 1100, Lippo Village Tangerang,Tangerang, Banten 15811, Indonesia
- Siloam Hospitals Lippo VillageJl. Siloam No.6Karawaci, Tangerang, Banten 15811 Indonesia
| | - Corry Quando Yahya
- Universitas Indonesia-Faculty of MedicineJalan Diponegoro No 77, Jakarta Pusat 10430 Indonesia
| | - Cucunawangsih Cucunawangsih
- Universitas Pelita Harapan-Faculty of MedicineDepartment of Microbiology, Jl. M. H. Thamrin Boulevard 1100, Lippo Village Tangerang,Tangerang, Banten 15811, Indonesia
- Siloam Hospitals Lippo VillageJl. Siloam No.6Karawaci, Tangerang, Banten 15811 Indonesia
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Yang H, Xue J, Li J, Hu G, Li H, Lu S, Fu Z. Green fluorescent protein-fused bacteriophage cellular wall-binding domain as broad-spectrum signal probe for fluorimetry of methicillin-resistant Staphylococcus aureus strains. Anal Chim Acta 2022; 1207:339799. [DOI: 10.1016/j.aca.2022.339799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 03/30/2022] [Accepted: 03/31/2022] [Indexed: 11/27/2022]
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Joubert D, Cullati S, Briot P, Righi L, Grauser D, Ourahmoune A, Chopard P. How to improve hospital admission screening for patients at risk of multidrug-resistant organism carriage: a before-and-after interventional study and cost-effectiveness analysis. BMJ Open Qual 2022; 11:bmjoq-2021-001699. [PMID: 35483731 PMCID: PMC9052048 DOI: 10.1136/bmjoq-2021-001699] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 04/18/2022] [Indexed: 01/02/2023] Open
Abstract
Background Infection prevention and control (IPC) is a prioritised task for healthcare workers in emergency department (ED). Here, we examined compliance with admission screening (AS) and additional precautions (AP) measures for patients at risk of infection with multidrug-resistant organisms (MDROs) by using a two-stage, multifaceted educational intervention, also comparing the cost of a developed automated indicator for AS and AP compliance and clinical audits to sustain observed findings. Methods In the first stage, staff in the ED of the University Hospitals of Geneva, Switzerland, were briefed on IPC measures (AS and AP). A cross-sectional survey was then conducted to assess barriers to IPC measures. In the second stage, healthcare workers underwent training sessions, and an electronic patient record ‘order-set’ including AS and AP compliance indicators was designed. We compared the cost–benefit of the audits and the automated indicators for AS and AP compliance. Results Compliance significantly improved after training, from 36.2% (95% CI 23.6% to 48.8%) to 78.8% (95% CI 67.1% to 90.3%) for AS (n=100, p=0.0050) and from 50.2% (95% CI 45.3% to 55.1%) to 68.5% (95% CI 60.1% to 76.9%) for AP (n=125, p=0.0092). Healthcare workers recognised MDRO screening as an ED task (70.2%), with greater acknowledgment of risk factors at AS considered an ED duty. The monthly cost was higher for clinical audits than the automated indicator, with a reported yearly cost of US$120 203. The initial cost of developing the automated indicator was US$18 290 and its return on investment US$3.44 per US$1 invested. Conclusion Training ED staff increased compliance with IPC measures when accompanied by team discussions for optimal effectiveness. An automated indicator of compliance is cheaper and closer to real-time than a clinical audit.
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Affiliation(s)
- Dominique Joubert
- Nursing Department, Quality of care, University Hospitals of Geneva, Geneva, Switzerland
| | - Stephane Cullati
- Quality of Care Service, University Hospitals of Geneva, Geneva, Switzerland.,Population Health Laboratory (#PopHealthLab), University of Fribourg, Fribourg, Switzerland
| | - Pascal Briot
- Quality of Care Service, University Hospitals of Geneva, Geneva, Switzerland
| | - Lorenzo Righi
- Quality of Care Service, University Hospitals of Geneva, Geneva, Switzerland
| | - Damien Grauser
- IT System Department, University Hospitals of Geneva, Geneva, Switzerland
| | - Aimad Ourahmoune
- Quality of Care Service, University Hospitals of Geneva, Geneva, Switzerland.,Department of Readaptation and Geriatrics, University Hospitals of Geneva, Geneva, Switzerland
| | - Pierre Chopard
- Quality of Care Service, University Hospitals of Geneva, Geneva, Switzerland.,Department of Readaptation and Geriatrics, University Hospitals of Geneva, Geneva, Switzerland
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Schulz S, Ziganshyna S, Lippmann N, Glass S, Eulenburg V, Habermann N, Schwarz UT, Voigt A, Heilmann C, Rüffer T, Werdehausen R. The Meta-Substituted Isomer of TMPyP Enables More Effective Photodynamic Bacterial Inactivation than Para-TMPyP In Vitro. Microorganisms 2022; 10:microorganisms10050858. [PMID: 35630304 PMCID: PMC9143678 DOI: 10.3390/microorganisms10050858] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 04/16/2022] [Accepted: 04/19/2022] [Indexed: 01/27/2023] Open
Abstract
Porphyrinoid-based photodynamic inactivation (PDI) provides a promising approach to treating multidrug-resistant infections. However, available agents for PDI still have optimization potential with regard to effectiveness, toxicology, chemical stability, and solubility. The currently available photosensitizer TMPyP is provided with a para substitution pattern (para-TMPyP) of the pyridinium groups and has been demonstrated to be effective for PDI of multidrug-resistant bacteria. To further improve its properties, we synthetized a structural variant of TMPyP with an isomeric substitution pattern in a meta configuration (meta-TMPyP), confirmed the correct structure by crystallographic analysis and performed a characterization with NMR-, UV/Vis-, and IR spectroscopy, photostability, and singlet oxygen generation assay. Meta-TMPyP had a hypochromic shift in absorbance (4 nm) with a 55% higher extinction coefficient and slightly improved photostability (+6.9%) compared to para-TMPyP. Despite these superior molecular properties, singlet oxygen generation was increased by only 5.4%. In contrast, PDI, based on meta-TMPyP, reduced the density of extended spectrum β-lactamase-producing and fluoroquinolone-resistant Escherichia coli by several orders of magnitude, whereby a sterilizing effect was observed after 48 min of illumination, while para-TMPyP was less effective (p < 0.01). These findings demonstrate that structural modification with meta substitution increases antibacterial properties of TMPyP in PDI.
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Affiliation(s)
- Sebastian Schulz
- Department of Anesthesiology and Intensive Care, Medical Faculty, University of Leipzig, 04103 Leipzig, Germany; (S.S.); (S.Z.); (V.E.)
| | - Svitlana Ziganshyna
- Department of Anesthesiology and Intensive Care, Medical Faculty, University of Leipzig, 04103 Leipzig, Germany; (S.S.); (S.Z.); (V.E.)
| | - Norman Lippmann
- Institute of Medical Microbiology and Virology, Medical Faculty, University of Leipzig, 04103 Leipzig, Germany;
| | - Sarah Glass
- Leibniz Institute of Surface Engineering (IOM), 04318 Leipzig, Germany;
| | - Volker Eulenburg
- Department of Anesthesiology and Intensive Care, Medical Faculty, University of Leipzig, 04103 Leipzig, Germany; (S.S.); (S.Z.); (V.E.)
| | - Natalia Habermann
- Institute of Physics, Chemnitz University of Technology, 09111 Chemnitz, Germany; (N.H.); (U.T.S.)
| | - Ulrich T. Schwarz
- Institute of Physics, Chemnitz University of Technology, 09111 Chemnitz, Germany; (N.H.); (U.T.S.)
| | - Alexander Voigt
- Institute of Chemistry, Faculty of Natural Sciences, Chemnitz University of Technology, 09111 Chemnitz, Germany; (A.V.); (C.H.)
| | - Claudia Heilmann
- Institute of Chemistry, Faculty of Natural Sciences, Chemnitz University of Technology, 09111 Chemnitz, Germany; (A.V.); (C.H.)
| | - Tobias Rüffer
- Institute of Chemistry, Faculty of Natural Sciences, Chemnitz University of Technology, 09111 Chemnitz, Germany; (A.V.); (C.H.)
- Correspondence: (T.R.); (R.W.)
| | - Robert Werdehausen
- Department of Anesthesiology and Intensive Care, Medical Faculty, University of Leipzig, 04103 Leipzig, Germany; (S.S.); (S.Z.); (V.E.)
- Correspondence: (T.R.); (R.W.)
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Blazanin M, Lam WT, Vasen E, Chan BK, Turner PE. Decay and damage of therapeutic phage OMKO1 by environmental stressors. PLoS One 2022; 17:e0263887. [PMID: 35196336 PMCID: PMC8865689 DOI: 10.1371/journal.pone.0263887] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 01/25/2022] [Indexed: 01/21/2023] Open
Abstract
Antibiotic resistant bacterial pathogens are increasingly prevalent, driving the need for alternative approaches to chemical antibiotics when treating infections. One such approach is bacteriophage therapy: the use of bacteria-specific viruses that lyse (kill) their host cells. Just as the effect of environmental conditions (e.g. elevated temperature) on antibiotic efficacy is well-studied, the effect of environmental stressors on the potency of phage therapy candidates demands examination. Therapeutic phage OMKO1 infects and kills the opportunistic human pathogen Pseudomonas aeruginosa. Here, we used phage OMKO1 as a model to test how environmental stressors can lead to damage and decay of virus particles. We assessed the effects of elevated temperatures, saline concentrations, and urea concentrations. We observed that OMKO1 particles were highly tolerant to different saline concentrations, but decayed more rapidly at elevated temperatures and under high concentrations of urea. Additionally, we found that exposure to elevated temperature reduced the ability of surviving phage particles to suppress the growth of P. aeruginosa, suggesting a temperature-induced damage. Our findings demonstrate that OMKO1 is highly tolerant to a range of conditions that could be experienced inside and outside the human body, while also showing the need for careful characterization of therapeutic phages to ensure that environmental exposure does not compromise their expected potency, dosing, and pharmacokinetics.
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Affiliation(s)
- Michael Blazanin
- Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT, United States of America
- * E-mail:
| | - Wai Tin Lam
- Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT, United States of America
| | - Emma Vasen
- Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT, United States of America
| | - Benjamin K. Chan
- Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT, United States of America
| | - Paul E. Turner
- Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT, United States of America
- Program in Microbiology, Yale School of Medicine, New Haven, CT, United States of America
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DENOBLE A, REID HW, KRISCHAK M, ROSETT H, SACHDEVA S, WEAVER K, HEINE RP, DOTTERS-KATZ S. Bad bugs: antibiotic-resistant bacteriuria in pregnancy and risk of pyelonephritis. Am J Obstet Gynecol MFM 2022; 4:100540. [PMID: 34856419 PMCID: PMC9785208 DOI: 10.1016/j.ajogmf.2021.100540] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 11/13/2021] [Accepted: 11/23/2021] [Indexed: 12/25/2022]
Abstract
BACKGROUND The introduction of antibiotics has significantly reduced morbidity and mortality from microbial infections, but the rise of antibiotic-resistant and multidrug-resistant microbes is of increasing clinical concern. Few studies have examined the prevalence and impact of antibiotic resistance in common antenatal infections. OBJECTIVE This study aimed to determine whether pregnant women with a urine culture positive for antibiotic-resistant or multidrug-resistant gram-negative bacteria are at increased risk of developing pyelonephritis than pregnant women infected with antibiotic-susceptible organisms. STUDY DESIGN This was a retrospective cohort study of pregnant women with asymptomatic bacteriuria or acute cystitis from a single health system from July 2013 to May 2019. Women with gram-negative antibiotic-resistant (resistance to 1-2 antibiotic classes) and multidrug-resistant (resistance to ≥3 antibiotic classes) lower urinary tract infections were compared with women with antibiotic-susceptible urinary tract infections in terms of demographic, infectious, antepartum, and intrapartum data. The primary outcome was pyelonephritis, defined as a billing code for pyelonephritis plus fever or flank pain. The secondary outcomes were length of stay in the hospital because of pyelonephritis, a composite of pyelonephritis complications (renal abscess, sepsis, and intensive care unit admission), and preterm delivery. The differences in the primary outcome were analyzed using multivariate logistic regression. RESULTS A total of 573 women were eligible for inclusion. Of the 573 women, 334 (58%) had gram-negative bacteria on urine culture. Of the 334 cases, 173 (52%) were antibiotic susceptible, 74 (22%) were antibiotic resistant, and 87 (26%) were multidrug resistant. Women with antibiotic-resistant and multidrug-resistant infections were more likely to have hypertension (P=.004), to be Black (P=.03), to have public insurance (P=.002), and to experience more urinary infections (P=.001). Pyelonephritis was more common in women with antibiotic-resistant (adjusted odds ratio, 2.27; 95% confidence interval, 1.08-4.78) and multidrug-resistant (adjusted odds ratio, 3.06; 95% confidence interval, 1.57-5.96) infections than in women with antibiotic-susceptible urinary tract infections. Length of stay, preterm delivery, and pyelonephritis complications did not differ between antibiotic-susceptible and antibiotic-resistant and multidrug-resistant infections. CONCLUSION In an age of increasing antibiotic resistance, more than one-half of pregnant women with bacteriuria experience at least 1 infection with an antibiotic-resistant organism. These resistance patterns have a real clinical impact as pregnant women with antibiotic-resistant gram-negative lower urinary tract infections have an estimated 2- to 3-fold increased odds of developing pyelonephritis.
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Affiliation(s)
- Annalies DENOBLE
- Department of Obstetrics and Gynecology, Duke University Health System, Durham, NC
| | - Hadley W. REID
- Duke University School of Medicine, Duke University Health System, Durham, NC
| | - Madison KRISCHAK
- Duke University School of Medicine, Duke University Health System, Durham, NC
| | - Heather ROSETT
- Department of Obstetrics and Gynecology, University of Utah, Salt Lake City, UT
| | - Sarika SACHDEVA
- Duke University School of Medicine, Duke University Health System, Durham, NC
| | - Kristin WEAVER
- Department of Obstetrics and Gynecology, Duke University Health System, Durham, NC
| | - R. Phillips HEINE
- Department of Obstetrics and Gynecology, Wake Forest Baptist Medical Center, Winston-Salem, NC
| | - Sarah DOTTERS-KATZ
- Department of Obstetrics and Gynecology, Duke University Health System, Durham, NC
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Goh SG, Jiang P, Ng C, Le TH, Haller L, Chen H, Charles FR, Chen H, Liu X, He Y, Gin KYH. A new modelling framework for assessing the relative burden of antimicrobial resistance in aquatic environments. JOURNAL OF HAZARDOUS MATERIALS 2022; 424:127621. [PMID: 34763923 DOI: 10.1016/j.jhazmat.2021.127621] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 09/30/2021] [Accepted: 10/25/2021] [Indexed: 06/13/2023]
Abstract
The infections caused by antibiotic resistant bacteria (ARB) can lead to higher medical costs, prolonged hospital stays, and increased mortality compared to bacteria that are susceptible to antibiotics. Challenges exist in quantifying the potential risk/burden associated with antimicrobial resistance (AMR) as there is a lack of dose-response models available for pathogens which are resistant to antibiotics, in addition to the fact that very little is known regarding the health risks posed by antibiotic resistant genes (ARG). In this paper, we proposed a new modelling framework to evaluate the relative burden of AMR in natural aquatic environments. With this framework, an AMR burden score for each sample was calculated based on burden coefficients assigned for each ARB and ARG, as well as weighted burdens for the separate ARBs and ARGs components. The method developed in this study was applied to assess the relative burden of AMR in local aquatic environments with different land uses at different seasons. The collected filed data were used to verify the applicability of the proposed relative burden assessment method. Through the established method, the spatial and temporal hotspots of AMR were identified, which could provide useful information to agencies for better control and management of AMR emergence in natural aquatic environments.
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Affiliation(s)
- Shin Giek Goh
- NUS Environmental Research Institute, National University of Singapore, 117411, Singapore
| | - Peng Jiang
- Department of Industrial Engineering and Engineering Management, Business School, Sichuan University, Chengdu 610064, China; Department of Industrial Engineering & Management, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Charmaine Ng
- NUS Environmental Research Institute, National University of Singapore, 117411, Singapore
| | - Thai-Hoang Le
- NUS Environmental Research Institute, National University of Singapore, 117411, Singapore
| | - Laurence Haller
- NUS Environmental Research Institute, National University of Singapore, 117411, Singapore
| | - Hongjie Chen
- NUS Environmental Research Institute, National University of Singapore, 117411, Singapore
| | | | - Huiting Chen
- NUS Environmental Research Institute, National University of Singapore, 117411, Singapore
| | - Xiao Liu
- Department of Industrial Engineering & Management, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yiliang He
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Karina Yew-Hoong Gin
- NUS Environmental Research Institute, National University of Singapore, 117411, Singapore; Department of Civil & Environmental Engineering, National University of Singapore, 117576, Singapore.
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Lai WM, Islahudin FH, Ambaras Khan R, Chong WW. Pharmacists’ Perspectives of Their Roles in Antimicrobial Stewardship: A Qualitative Study among Hospital Pharmacists in Malaysia. Antibiotics (Basel) 2022; 11:antibiotics11020219. [PMID: 35203822 PMCID: PMC8868356 DOI: 10.3390/antibiotics11020219] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 01/29/2022] [Accepted: 01/30/2022] [Indexed: 12/10/2022] Open
Abstract
Antimicrobial resistance has negatively impacted patient outcomes and increased healthcare costs. Antimicrobial stewardship (AMS) includes all activities and policies to promote the judicious use of antimicrobials. Pharmacists are key players in AMS models worldwide. However, there is a research gap in the role of pharmacists as antimicrobial stewards in Malaysia. This study aimed to explore hospital pharmacists’ perspectives on their roles in, and barriers and facilitators to the implementation of AMS strategies. Individual, semi-structured interviews were conducted with 16 hospital pharmacists involved in AMS activities from 13 public hospitals in Kuala Lumpur and Selangor. Audio-taped interviews were transcribed verbatim and imported into NVivo software version 10.0 (QSR). A thematic analysis method was used to identify themes from the qualitative data until theme saturation was reached. Respondents perceived pharmacists as having important roles in the implementation of AMS strategies, in view of the multiple tasks they were entrusted with. They described their functions as antimicrobial advisors, antimicrobial guardians and liaison personnel. The lack of resources in terms of training, manpower and facilities, as well as attitudinal challenges, were some barriers identified by the respondents. Administrative support, commitment and perseverance were found to be facilitators to the role of pharmacists in AMS. In conclusion, pharmacists in public hospitals play important roles in AMS teams. This study has provided insights into the support that AMS pharmacists in public hospitals require to overcome the barriers they face and to enhance their roles in the implementation of AMS strategies.
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Affiliation(s)
- Wan Mae Lai
- Centre of Quality Management of Medicines, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Kuala Lumpur 50300, Malaysia; (W.M.L.); (F.H.I.)
- Pharmacy Department, Serdang Hospital, Ministry of Health, Kajang 43000, Malaysia
| | - Farida Hanim Islahudin
- Centre of Quality Management of Medicines, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Kuala Lumpur 50300, Malaysia; (W.M.L.); (F.H.I.)
| | - Rahela Ambaras Khan
- Pharmacy Department, Kuala Lumpur Hospital, Ministry of Health, Kuala Lumpur 50586, Malaysia;
| | - Wei Wen Chong
- Centre of Quality Management of Medicines, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Kuala Lumpur 50300, Malaysia; (W.M.L.); (F.H.I.)
- Correspondence: ; Tel.: +6(03)-9289-8038
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Kember M, Grandy S, Raudonis R, Cheng Z. Non-Canonical Host Intracellular Niche Links to New Antimicrobial Resistance Mechanism. Pathogens 2022; 11:pathogens11020220. [PMID: 35215166 PMCID: PMC8876822 DOI: 10.3390/pathogens11020220] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 02/03/2022] [Accepted: 02/05/2022] [Indexed: 12/04/2022] Open
Abstract
Globally, infectious diseases are one of the leading causes of death among people of all ages. The development of antimicrobials to treat infectious diseases has been one of the most significant advances in medical history. Alarmingly, antimicrobial resistance is a widespread phenomenon that will, without intervention, make currently treatable infections once again deadly. In an era of widespread antimicrobial resistance, there is a constant and pressing need to develop new antibacterial drugs. Unraveling the underlying resistance mechanisms is critical to fight this crisis. In this review, we summarize some emerging evidence of the non-canonical intracellular life cycle of two priority antimicrobial-resistant bacterial pathogens: Pseudomonas aeruginosa and Staphylococcus aureus. The bacterial factors that modulate this unique intracellular niche and its implications in contributing to resistance are discussed. We then briefly discuss some recent research that focused on the promises of boosting host immunity as a combination therapy with antimicrobials to eradicate these two particular pathogens. Finally, we summarize the importance of various strategies, including surveillance and vaccines, in mitigating the impacts of antimicrobial resistance in general.
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Glasner C, Berends MS, Becker K, Esser J, Gieffers J, Jurke A, Kampinga G, Kampmeier S, Klont R, Köck R, von Müller L, Al Naemi N, Ott A, Ruijs G, Saris K, Tami A, Voss A, Waar K, van Zeijl J, Friedrich AW. A prospective multicentre screening study on multidrug-resistant organisms in intensive care units in the Dutch-German cross-border region, 2017 to 2018: the importance of healthcare structures. EURO SURVEILLANCE : BULLETIN EUROPEEN SUR LES MALADIES TRANSMISSIBLES = EUROPEAN COMMUNICABLE DISEASE BULLETIN 2022; 27. [PMID: 35115078 PMCID: PMC8815100 DOI: 10.2807/1560-7917.es.2022.27.5.2001660] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Background Antimicrobial resistance poses a risk for healthcare, both in the community and hospitals. The spread of multidrug-resistant organisms (MDROs) occurs mostly on a local and regional level, following movement of patients, but also occurs across national borders. Aim The aim of this observational study was to determine the prevalence of MDROs in a European cross-border region to understand differences and improve infection prevention based on real-time routine data and workflows. Methods Between September 2017 and June 2018, 23 hospitals in the Dutch (NL)–German (DE) cross-border region (BR) participated in the study. During 8 consecutive weeks, patients were screened upon admission to intensive care units (ICUs) for nasal carriage of meticillin-resistant Staphylococcus aureus (MRSA) and rectal carriage of vancomycin-resistant Enterococcus faecium/E. faecalis (VRE), third-generation cephalosporin-resistant Enterobacteriaceae (3GCRE) and carbapenem-resistant Enterobacteriaceae (CRE). All samples were processed in the associated laboratories. Results A total of 3,365 patients were screened (median age: 68 years (IQR: 57–77); male/female ratio: 59.7/40.3; NL-BR: n = 1,202; DE-BR: n = 2,163). Median screening compliance was 60.4% (NL-BR: 56.9%; DE-BR: 62.9%). MDRO prevalence was higher in DE-BR than in NL-BR, namely 1.7% vs 0.6% for MRSA (p = 0.006), 2.7% vs 0.1% for VRE (p < 0.001) and 6.6% vs 3.6% for 3GCRE (p < 0.001), whereas CRE prevalence was comparable (0.2% in DE-BR vs 0.0% in NL-BR ICUs). Conclusions This first prospective multicentre screening study in a European cross-border region shows high heterogenicity in MDRO carriage prevalence in NL-BR and DE-BR ICUs. This indicates that the prevalence is probably influenced by the different healthcare structures.
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Affiliation(s)
- Corinna Glasner
- Department of Medical Microbiology and Infection Control, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Matthijs S Berends
- Department of Medical Microbiology and Infection Control, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands.,Certe Medical Diagnostics and Advice Foundation, Groningen, the Netherlands
| | - Karsten Becker
- Institute of Medical Microbiology, University Hospital Münster, Münster, Germany.,Friedrich Loeffler-Institute of Medical Microbiology, University Medicine Greifswald, Greifswald, Germany
| | - Jutta Esser
- Practice of Laboratory Medicine and University Osnabrück, Department of Dermatology, Environmental Medicine and Health Theory, Osnabrück, Germany
| | - Jens Gieffers
- Institute for Microbiology, Hygiene and Laboratory Medicine, Klinikum Lippe, Detmold, Germany
| | - Annette Jurke
- North Rhine-Westphalian Centre for Health, Section Infectious Disease Epidemiology, Bochum, Germany
| | - Greetje Kampinga
- Department of Medical Microbiology and Infection Control, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | | | - Rob Klont
- Laboratory Microbiology Twente Achterhoek, Hengelo, the Netherlands
| | - Robin Köck
- Institute of Hygiene, DRK Kliniken Berlin, Berlin, Germany.,Institute of Hygiene, University Hospital Münster, Münster, Germany
| | - Lutz von Müller
- Institute for Laboratory Medicine, Microbiology and Hygiene, Christophorus-Kliniken GmbH, Coesfeld, Germany
| | - Nashwan Al Naemi
- Laboratory Microbiology Twente Achterhoek, Hengelo, the Netherlands
| | - Alewijn Ott
- Certe Medical Diagnostics and Advice Foundation, Groningen, the Netherlands
| | - Gijs Ruijs
- Laboratory for Medical Microbiology and Infectious Diseases, Isala, Zwolle, the Netherlands
| | - Katja Saris
- Department of Medical Microbiology, Radboud University Medical Centre and Canisius-Wilhelmina Hospital, Nijmegen, the Netherlands
| | - Adriana Tami
- Department of Medical Microbiology and Infection Control, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Andreas Voss
- Department of Medical Microbiology, Radboud University Medical Centre and Canisius-Wilhelmina Hospital, Nijmegen, the Netherlands
| | - Karola Waar
- Izore, Centre for Infectious Diseases Friesland, Leeuwarden, the Netherlands.,Certe Medical Diagnostics and Advice Foundation, Groningen, the Netherlands
| | - Jan van Zeijl
- Izore, Centre for Infectious Diseases Friesland, Leeuwarden, the Netherlands.,Certe Medical Diagnostics and Advice Foundation, Groningen, the Netherlands
| | - Alex W Friedrich
- Department of Medical Microbiology and Infection Control, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands.,European Prevention Networks in Infection Control, University Hospital Münster, Münster, Germany
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Amato HK, Hemlock C, Andrejko KL, Smith AR, Hejazi NS, Hubbard AE, Verma SC, Adhikari RK, Pokhrel D, Smith K, Graham JP, Pokhrel A. Biodigester Cookstove Interventions and Child Diarrhea in Semirural Nepal: A Causal Analysis of Daily Observations. ENVIRONMENTAL HEALTH PERSPECTIVES 2022; 130:17002. [PMID: 34985305 PMCID: PMC8729225 DOI: 10.1289/ehp9468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 11/02/2021] [Accepted: 12/02/2021] [Indexed: 05/08/2023]
Abstract
BACKGROUND Hundreds of thousands of biodigesters have been constructed in Nepal. These household-level systems use human and animal waste to produce clean-burning biogas used for cooking, which can reduce household air pollution from woodburning cookstoves and prevent respiratory illnesses. The biodigesters, typically operated by female caregivers, require the handling of animal waste, which may increase domestic fecal contamination, exposure to diarrheal pathogens, and the risk of enteric infections, especially among young children. OBJECTIVE We estimated the effect of daily reported biogas cookstove use on incident diarrhea among children < 5 y old in the Kavrepalanchok District of Nepal. Secondarily, we assessed effect measure modification and statistical interaction of individual- and household-level covariates (child sex, child age, birth order, exclusive breastfeeding, proof of vaccination, roof type, sanitation, drinking water treatment, food insecurity) as well as recent 14-d acute lower respiratory infection (ALRI) and season. METHODS We analyzed 300,133 person-days for 539 children in an observational prospective cohort study to estimate the average effect of biogas stove use on incident diarrhea using cross-validated targeted maximum likelihood estimation (CV-TMLE). RESULTS Households reported using biogas cookstoves in the past 3 d for 23% of observed person-days. The adjusted relative risk of diarrhea for children exposed to biogas cookstove use was 1.31 (95% confidence interval (CI): 1.00, 1.71) compared to unexposed children. The estimated effect of biogas stove use on diarrhea was stronger among breastfed children (2.09; 95% CI: 1.35, 3.25) than for nonbreastfed children and stronger during the dry season (2.03; 95% CI: 1.17, 3.53) than in the wet season. Among children exposed to biogas cookstove use, those with a recent ALRI had the highest mean risk of diarrhea, estimated at 4.53 events (95% CI: 1.03, 8.04) per 1,000 person-days. DISCUSSION This analysis provides new evidence that child diarrhea may be an unintended health risk of biogas cookstove use. Additional studies are needed to identify exposure pathways of fecal pathogen contamination associated with biodigesters to improve the safety of these widely distributed public health interventions. https://doi.org/10.1289/EHP9468.
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Affiliation(s)
- Heather K. Amato
- Division of Environmental Health Sciences, University of California, Berkeley School of Public Health, Berkeley, California, USA
| | - Caitlin Hemlock
- Division of Epidemiology, University of California, Berkeley School of Public Health, Berkeley, California, USA
| | - Kristin L. Andrejko
- Division of Epidemiology, University of California, Berkeley School of Public Health, Berkeley, California, USA
| | - Anna R. Smith
- Division of Environmental Health Sciences, University of California, Berkeley School of Public Health, Berkeley, California, USA
| | - Nima S. Hejazi
- Division of Biostatistics, University of California, Berkeley School of Public Health, Berkeley, California, USA
| | - Alan E. Hubbard
- Division of Biostatistics, University of California, Berkeley School of Public Health, Berkeley, California, USA
| | | | - Ramesh K. Adhikari
- Tribhuvan University, Institute of Medicine, Maharajgunj Medical Campus, Kathmandu, Nepal
| | - Dhiraj Pokhrel
- Society for Legal and Environmental Analysis and Development Research (LEADERS), Nepal
| | - Kirk Smith
- Division of Environmental Health Sciences, University of California, Berkeley School of Public Health, Berkeley, California, USA
| | - Jay P. Graham
- Division of Environmental Health Sciences, University of California, Berkeley School of Public Health, Berkeley, California, USA
| | - Amod Pokhrel
- Division of Environmental Health Sciences, University of California, Berkeley School of Public Health, Berkeley, California, USA
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Otieno PA, Campbell S, Maley S, Obinju Arunga T, Otieno Okumu M. A Systematic Review of Pharmacist-Led Antimicrobial Stewardship Programs in Sub-Saharan Africa. Int J Clin Pract 2022; 2022:3639943. [PMID: 36311485 PMCID: PMC9584722 DOI: 10.1155/2022/3639943] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 09/27/2022] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND The misuse of antibiotics contributes significantly to antimicrobial resistance (AMR). Higher treatment costs, longer hospital stays, and clinical failure can all result from AMR. According to projections, Africa and Asia will bear the heaviest burden of AMR-related mortalities in the coming years. Antimicrobial stewardship (AMS) programmes are therefore critical in mitigating the effects of AMR. Pharmacists may play an important role in such programmes, as seen in Europe and North America, but the impact, challenges, and opportunities of pharmacist-led antimicrobial stewardship interventions in Sub-Saharan African hospitals are unknown. The purpose of this systematic review was to assess the impact, challenges, and opportunities of pharmacist-led antimicrobial stewardship interventions in Sub-Saharan African hospitals. METHODS The Joanna Briggs Institute (JBI) guidelines were used to search for peer-reviewed pharmacist-led studies based in hospitals in Sub-Saharan Africa that were published in English between January 2015 and January 2021. The PubMed, Embase, and Ovid databases were used. RESULTS Education and training, audits and feedback, protocol development, and ward rounds were identified as primary components of pharmacist-led antimicrobial stewardship interventions in Sub-Saharan Africa. The pharmacist-led antimicrobial interventions improved adherence to guidelines and reduced inappropriate prescribing, but were hampered by a lack of laboratory and technological support, limited stewardship time, poor documentation, and a lack of guidelines and policies. Funding, mentorship, guidelines, accountability, continuous monitoring, feedback, multidisciplinary engagements, and collaborations were identified as critical in the implementation of pharmacist-led antimicrobial stewardship programmes. CONCLUSIONS These findings suggest that pharmacists in Sub-Saharan African hospitals can successfully lead antimicrobial stewardship programmes but their implementation is limited by lack of mentorship, accountability, continuous monitoring, feedback, collaborations, and poor funding.
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Affiliation(s)
- Phanice Ajore Otieno
- College of Medical, Veterinary and Life Sciences, School of Life Sciences, University of Glasgow, Glasgow, UK
- Department of Health, County Government of Kisumu, PO Box 2738-40100, Kisumu, Kenya
| | - Sue Campbell
- College of Medical, Veterinary and Life Sciences, School of Life Sciences, University of Glasgow, Glasgow, UK
| | - Sonny Maley
- College of Medical, Veterinary and Life Sciences, School of Life Sciences, University of Glasgow, Glasgow, UK
| | - Tom Obinju Arunga
- Department of Health Informatics, Maseno University, Private Bag, Kisumu, Kenya
| | - Mitchel Otieno Okumu
- Department of Health, County Government of Kisumu, PO Box 2738-40100, Kisumu, Kenya
- Department of Public Health Pharmacology and Toxicology, Faculty of Veterinary Medicine, University of Nairobi, PO Box 29053-00625, Nairobi, Kenya
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Budgell EP, Davies TJ, Donker T, Hopkins S, Wyllie DH, Peto TEA, Gill MJ, Llewelyn MJ, Walker AS. Impact of hospital antibiotic use on patient-level risk of death among 36,124,372 acute and medical admissions in England. J Infect 2021; 84:311-320. [PMID: 34963640 DOI: 10.1016/j.jinf.2021.12.029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 12/03/2021] [Accepted: 12/17/2021] [Indexed: 12/29/2022]
Abstract
OBJECTIVES Initiatives to curb hospital antibiotic use might be associated with harm from under-treatment. We examined the extent to which variation in hospital antibiotic prescribing is associated with mortality risk in acute/general medicine inpatients. METHODS This ecological analysis examined Hospital Episode Statistics from 36,124,372 acute/general medicine admissions (≥16y) to 135 acute hospitals in England, 01/April/2010-31/March/2017. Random-effects meta-regression was used to investigate whether heterogeneity in adjusted 30-day mortality was associated with hospital-level antibiotic use, measured in defined-daily-doses (DDD)/1,000 bed-days. Models also considered DDDs/1,000 admissions and DDDs for narrow-spectrum/broad-spectrum antibiotics, parenteral/oral, and local interpretations of World Health Organization Access, Watch, and Reserve antibiotics. RESULTS Hospital-level antibiotic DDDs/1,000 bed-days varied 15-fold with comparable variation in broad-spectrum, parenteral, and Reserve antibiotic use. After extensive adjusting for hospital case-mix, the probability of 30-day mortality changed -0.010% (95% CI: -0.064,+0.044) for each increase of 500 hospital-level antibiotic DDDs/1,000 bed-days. Analyses of other metrics of antibiotic use showed no consistent association with mortality risk. CONCLUSIONS We found no evidence that wide variation in hospital antibiotic use is associated with adjusted mortality risk in acute/general medicine inpatients. Using low-prescribing hospitals as benchmarks could help drive safe and substantial reductions in antibiotic consumption of up-to one-third in this population.
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Affiliation(s)
- Eric P Budgell
- Nuffield Department of Medicine, University of Oxford, Oxford, UK.
| | - Timothy J Davies
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Tjibbe Donker
- Institute for Infection Prevention and Hospital Epidemiology, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Susan Hopkins
- National Infection Service, Public Health England, UK
| | | | - Tim E A Peto
- Nuffield Department of Medicine, University of Oxford, Oxford, UK; NIHR Biomedical Research Centre, Oxford, UK; National Institute for Health Research Health Protection Research Unit in Healthcare Associated Infections and Antimicrobial Resistance, Oxford, UK
| | - Martin J Gill
- Clinical Microbiology, University Hospitals Birmingham NHS Foundation Trust, Queen Elizabeth Hospital Birmingham, Birmingham, UK
| | - Martin J Llewelyn
- Global Health and Infectious Diseases, Brighton and Sussex Medical School, University of Sussex, Brighton, UK; Department of Microbiology and Infection, Royal Sussex County Hospital, Brighton, UK
| | - A Sarah Walker
- Nuffield Department of Medicine, University of Oxford, Oxford, UK; NIHR Biomedical Research Centre, Oxford, UK; National Institute for Health Research Health Protection Research Unit in Healthcare Associated Infections and Antimicrobial Resistance, Oxford, UK
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Feldman SF, Temkin E, Wullfhart L, Nutman A, Schechner V, Shitrit P, Shvartz R, Schwaber MJ, Andremont A, Carmeli Y. A nationwide population-based study of Escherichia coli bloodstream infections: incidence, antimicrobial resistance and mortality. Clin Microbiol Infect 2021; 28:879.e1-879.e7. [PMID: 34922002 DOI: 10.1016/j.cmi.2021.12.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 11/16/2021] [Accepted: 12/06/2021] [Indexed: 11/16/2022]
Abstract
OBJECTIVES Escherichia coli is the leading cause of bloodstream infection (BSI). The incidence of E. coli BSI caused by antibiotic-resistant strains is increasing. We aimed to describe the nationwide incidence and resistance profile of E. coli BSI in Israel and its impact on mortality, to compare E. coli BSI mortality to all-cause mortality, and community-onset to hospital-onset E. coli BSI. METHODS We used mandatory BSI surveillance reports submitted by all Israeli hospitals to the Ministry of Health and the national death registry. All E. coli BSI from January 1, 2018, to December 31, 2019 in patients ages 18 and over were included. RESULTS A total of 11 113 E. coli BSI occurred in 10 218 patients; 85% (9012/10 583) were community onset. Median age was 76 (IQR 65-85), and 57% (6304/11 113) of cases occurred in women. The annual incidence was 92.5 per 100,000 population. Antibiotic resistance was frequent and significantly more common in hospital-onset than in community-onset BSI; 65% (1021/1571) vs 45% (4049/9012) were multidrug-resistant (MDR) (p<0.001). The case-fatality rate (CFR) was higher following hospital-onset BSI than community-onset: 23% (276/1214) vs 12% (926/7620) at 14 days, 31% (378/1214) vs 16% (1244/7620) at 30 days, and 55% (418/766) vs 34% (1645/4903) at 1 year (p<0.001 for all comparisons). The 1-year-CFR was 47% (1258/2707) for MDR vs 28% (928/3281) for non-MDR (p<0.001). The annual mortality rate was 31.0 per 100,000 population, comprising 4.2% (31.0/734.8) of all causes of deaths. CONCLUSIONS E. coli BSI carries a high burden, with a large proportion of MDR isolates, which are associated with increased incidence and CFR.
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Affiliation(s)
- Sarah F Feldman
- National Institute for Antibiotic Resistance and Infection Control, Ministry of Health, Israel.
| | - Elizabeth Temkin
- National Institute for Antibiotic Resistance and Infection Control, Ministry of Health, Israel
| | - Liat Wullfhart
- National Institute for Antibiotic Resistance and Infection Control, Ministry of Health, Israel
| | - Amir Nutman
- National Institute for Antibiotic Resistance and Infection Control, Ministry of Health, Israel; Sackler Faculty of Medicine, Tel Aviv University, Israel
| | - Vered Schechner
- National Institute for Antibiotic Resistance and Infection Control, Ministry of Health, Israel; Sackler Faculty of Medicine, Tel Aviv University, Israel
| | - Pnina Shitrit
- Sackler Faculty of Medicine, Tel Aviv University, Israel; Infection Control Unit, Meir Medical Center, Kfar Saba, Israel
| | - Racheli Shvartz
- National Institute for Antibiotic Resistance and Infection Control, Ministry of Health, Israel
| | - Mitchell J Schwaber
- National Institute for Antibiotic Resistance and Infection Control, Ministry of Health, Israel; Sackler Faculty of Medicine, Tel Aviv University, Israel
| | | | - Yehuda Carmeli
- National Institute for Antibiotic Resistance and Infection Control, Ministry of Health, Israel; Sackler Faculty of Medicine, Tel Aviv University, Israel
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Symanzik C, Hillenbrand J, Stasielowicz L, Greie JC, Friedrich AW, Pulz M, John SM, Esser J. Novel insights into pivotal risk factors for rectal carriage of extended-spectrum-β-lactamase-producing enterobacterales within the general population in Lower Saxony, Germany. J Appl Microbiol 2021; 132:3256-3264. [PMID: 34856042 DOI: 10.1111/jam.15399] [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: 09/16/2021] [Revised: 11/26/2021] [Accepted: 11/30/2021] [Indexed: 11/29/2022]
Abstract
AIMS To estimate the prevalence of extended-spectrum-β-lactamase (ESBL)-producing enterobacterales (ESBL-E) carriage in the general population of Lower Saxony, Germany, and to identify risk factors for being colonized. METHODS AND RESULTS Participants were recruited through local press and information events. Detection of ESBL-E by culture was conducted using ESBL-selective chromagar plates containing third-generation cephalosporins. Identification of pathogens was performed using matrix-assisted laser desorption ionization time-of-flight (MALDI-TOF)_technology on Vitek mass spectrometry. Antibiotic susceptibility testing was conducted by microdilution (Vitek II) and an ESBL confirmation assay was carried out using a combination disk test. Of 527 randomly collected stool samples from healthy volunteers, 5.5% were tested positive for ESBL-E. Post-stratification for age and gender yielded a similar population estimate (5.9%). People traveling abroad and taking antibiotics had the greatest rectal ESBL-E carriage. CONCLUSIONS Potential risk factors (eg, working in healthcare facilities, recent inpatient stay) did not attribute to rectal ESBL-E carriage as other factors (eg, travelling, taking antibiotics). Rectal ESBL-E carriage within the general population seems to be high. SIGNIFICANCE AND IMPACT OF THE STUDY The known risk factors for carriage with MDRO might not be fully applicable to ESBL-E and require further examination in order to develop effective strategies for the prevention of ESBL-E dissemination within the general population.
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Affiliation(s)
- Cara Symanzik
- Institute for Interdisciplinary Dermatological Prevention and Rehabilitation (iDerm) at the Osnabrueck University, Osnabrueck, Germany.,Department of Dermatology, Environmental Medicine and Health Theory, Osnabrueck University, Osnabrueck, Germany
| | - Jacqueline Hillenbrand
- Department of Dermatology, Environmental Medicine and Health Theory, Osnabrueck University, Osnabrueck, Germany
| | | | - Jörg-Christian Greie
- Department of Dermatology, Environmental Medicine and Health Theory, Osnabrueck University, Osnabrueck, Germany.,Laboratory Medical Practice Osnabrueck, Georgsmarienhuette/Osnabrueck, Germany
| | - Alex W Friedrich
- Department of Medical Microbiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Matthias Pulz
- Public Health Agency of Lower Saxony, Hannover, Germany
| | - Swen Malte John
- Institute for Interdisciplinary Dermatological Prevention and Rehabilitation (iDerm) at the Osnabrueck University, Osnabrueck, Germany.,Department of Dermatology, Environmental Medicine and Health Theory, Osnabrueck University, Osnabrueck, Germany
| | - Jutta Esser
- Department of Dermatology, Environmental Medicine and Health Theory, Osnabrueck University, Osnabrueck, Germany.,Laboratory Medical Practice Osnabrueck, Georgsmarienhuette/Osnabrueck, Germany
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50
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Role of pollution on the selection of antibiotic resistance and bacterial pathogens in the environment. Curr Opin Microbiol 2021; 64:117-124. [PMID: 34700125 DOI: 10.1016/j.mib.2021.10.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 09/28/2021] [Accepted: 10/06/2021] [Indexed: 02/02/2023]
Abstract
There is evidence that human activity causes pollution that contributes to an enhanced selection of bacterial pathogens in the environment. In this review, we consider how environmental pollution can favour the selection of bacterial pathogens in the environment. We specifically discuss pollutants released into the environment by human activities (mainly human waste) that are associated with the selection for genetic features in environmental bacterial populations that lead to the emergence of bacterial pathogens. Finally, we also identify key pollutants that are associated with antibiotic resistance and discuss possibilities of how to prevent their release into the environment.
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