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Ge H, Qiao J, Xu H, Liu R, Chen R, Li C, Hu X, Zhou J, Guo X, Zheng B. First report of Klebsiella pneumoniae co-producing OXA-181, CTX-M-55, and MCR-8 isolated from the patient with bacteremia. Front Microbiol 2022; 13:1020500. [PMID: 36312943 PMCID: PMC9614159 DOI: 10.3389/fmicb.2022.1020500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 09/30/2022] [Indexed: 11/13/2022] Open
Abstract
The worldwide spread of carbapenem-resistant Enterobacteriaceae (CRE) has led to a major challenge to human health. In this case, colistin is often used to treat the infection caused by CRE. However, the coexistence of genes conferring resistance to carbapenem and colistin is of great concern. In this work, we reported the coexistence of blaOXA-181, blaCTX-M-55, and mcr-8 in an ST273 Klebsiella pneumoniae isolate for the first time. The species identification was performed using MALDI-TOF MS, and the presence of various antimicrobial resistance genes (ARGs) and virulence genes were detected by PCR and whole-genome sequencing. Antimicrobial susceptibility testing showed that K. pneumoniae 5589 was resistant to aztreonam, imipenem, meropenem, ceftriaxone, cefotaxime, ceftazidime, levofloxacin, ciprofloxacin, gentamicin, piperacillin-tazobactam, cefepime, and polymyxin B, but sensitive to amikacin. S1-pulsed-field gel electrophoresis (PFGE) and Southern blotting revealed the mcr-8 gene was carried on a ~ 138 kb plasmid with a conserved structure (IS903B-ymoA-inhA-mcr-8-copR-baeS-dgkA-ampC). In addition, blaOXA-181 was found on another ~51 kb plasmid with a composite transposon flanked by insertion sequence IS26. The in vitro conjugation experiments and plasmid sequence probe indicated that the plasmid p5589-OXA-181 and the p5589-mcr-8 were conjugative, which may contribute to the propagation of ARGs. Relevant detection and investigation measures should be taken to control the prevalence of pathogens coharboring blaOXA-181, blaCTX-M-55 and mcr-8.
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Affiliation(s)
- Haoyu Ge
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
- Department of Laboratory Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Jie Qiao
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
- Department of Laboratory Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Hao Xu
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Ruishan Liu
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Ruyan Chen
- Department of Laboratory Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Chenyu Li
- Department of Laboratory Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Xinjun Hu
- Department of Infectious Diseases, The First Affiliated Hospital, College of Clinical Medicine, Henan University of Science and Technology, Luoyang, China
| | - Jiawei Zhou
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Xiaobing Guo
- Department of Laboratory Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Xiaobing Guo,
| | - Beiwen Zheng
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
- Department of Structure and Morphology, Jinan Microecological Biomedicine Shandong Laboratory, Jinan, Shandong, China
- Research Units of Infectious Diseases and Microecology, Chinese Academy of Medical Sciences, Beijing, China
- *Correspondence: Beiwen Zheng,
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152
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Ellis RC, Roberts EK, Grier JT, Fiester SE. Acinetobacter baumannii infections resistant to treatment: warning signs from the COVID-19 pandemic. Future Microbiol 2022; 17:1345-1347. [PMID: 36200659 DOI: 10.2217/fmb-2022-0153] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Affiliation(s)
- Ryan C Ellis
- Department of Biomedical Sciences, University of South Carolina School of Medicine Greenville, Greenville, SC 29605, USA
| | - Elena K Roberts
- Department of Biomedical Sciences, University of South Carolina School of Medicine Greenville, Greenville, SC 29605, USA
| | - Jennifer T Grier
- Department of Biomedical Sciences, University of South Carolina School of Medicine Greenville, Greenville, SC 29605, USA
| | - Steven E Fiester
- Department of Biomedical Sciences, University of South Carolina School of Medicine Greenville, Greenville, SC 29605, USA.,Department of Pathology, Prisma Health Upstate, Greenville, SC 29605, USA
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153
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Long-Read Whole Genome Sequencing Elucidates the Mechanisms of Amikacin Resistance in Multidrug-Resistant Klebsiella pneumoniae Isolates Obtained from COVID-19 Patients. Antibiotics (Basel) 2022; 11:antibiotics11101364. [PMID: 36290022 PMCID: PMC9598329 DOI: 10.3390/antibiotics11101364] [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: 09/21/2022] [Revised: 09/29/2022] [Accepted: 10/04/2022] [Indexed: 11/28/2022] Open
Abstract
Klebsiella pneumoniae is a Gram-negative, encapsulated, non-motile bacterium, which represents a global challenge to public health as one of the major causes of healthcare-associated infections worldwide. In the recent decade, the World Health Organization (WHO) noticed a critically increasing rate of carbapenem-resistant K. pneumoniae occurrence in hospitals. The situation with extended-spectrum beta-lactamase (ESBL) producing bacteria further worsened during the COVID-19 pandemic, due to an increasing number of patients in intensive care units (ICU) and extensive, while often inappropriate, use of antibiotics including carbapenems. In order to elucidate the ways and mechanisms of antibiotic resistance spreading within the K. pneumoniae population, whole genome sequencing (WGS) seems to be a promising approach, and long-read sequencing is especially useful for the investigation of mobile genetic elements carrying antibiotic resistance genes, such as plasmids. We have performed short- and long read sequencing of three carbapenem-resistant K. pneumoniae isolates obtained from COVID-19 patients in a dedicated ICU of a multipurpose medical center, which belonged to the same clone according to cgMLST analysis, in order to understand the differences in their resistance profiles. We have revealed the presence of a small plasmid carrying aph(3′)-VIa gene providing resistance to amikacin in one of these isolates, which corresponded perfectly to its phenotypic resistance profile. We believe that the results obtained will facilitate further elucidating of antibiotic resistance mechanisms for this important pathogen, and highlight the need for continuous genomic epidemiology surveillance of clinical K. pneumoniae isolates.
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154
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Comparison of the certified Copan eSwab system with commercially available cotton swabs for the detection of multidrug-resistant bacteria in rectal swabs. Am J Infect Control 2022; 50:1145-1149. [PMID: 35158014 DOI: 10.1016/j.ajic.2022.02.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 02/03/2022] [Accepted: 02/03/2022] [Indexed: 01/25/2023]
Abstract
BACKGROUND Rectal swabs are well-implemented screening tools for multidrug-resistant bacteria (MDRB). Since certified swabs such as the Copan eSwab system experienced a delivery bottleneck during the COVID-19 pandemic, commercially available alternatives such as commonly used double-tipped cotton swabs had to be investigated, especially considering their similarity to professional cotton swabs for microbiological purposes. METHODS Diagnostic properties of commercial cotton swabs (comparable to Q-tips) and Copan eSwabs were qualitatively compared in a prospective single-center study using microbiological standard cultures and PCR methods for the detection of multidrug-resistant Gram-negative bacteria and vancomycin-resistant enterococci (VRE). RESULTS A total of 196 swab pairs were collected from 164 participants. MDRB were detected in 36 of 164 cases (22%). There were neither false-negative nor false-positive results using commercial cotton swabs. In 8 of 196 samples (4.1%) MDRB species were detected only by using cotton swabs, including vancomycin-resistant Enterococcus faecium, OXA-48 producing Escherichia coli, ESBL-producing Klebsiella pneumoniae and ESBL-producing Escherichia coli. DISCUSSION Commercial cotton swabs turned out to be a reliable alternative to Copan eSwabs. For practical use as a screening tool, relevant storage- and manufacturer-related contamination must be ruled out beforehand. CONCLUSIONS Commonly available double-tipped cotton swabs can be used for rectal MDRB screening in the event of supply shortages of certified swabs. Further studies should clarify their suitability as a sampling system for nasopharyngeal MRSA carriage or even for the molecular biological detection of SARS-CoV-2.
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155
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Costa NS, Rio-Tinto A, Pinto IBF, dos Santos Silva Alvim DC, de Assis Rocha A, Oliveira LMA, Botelho ACN, Fracalanzza SEL, Teixeira LM, Rezende-Filho J, Marinho PS, Amim Júnior J, Taylor S, Thomas S, Pinto TCA. Changes in Group B Streptococcus Colonization among Pregnant Women before and after the Onset of the COVID-19 Pandemic in Brazil. Pathogens 2022; 11:pathogens11101104. [PMID: 36297161 PMCID: PMC9609651 DOI: 10.3390/pathogens11101104] [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: 08/04/2022] [Revised: 09/06/2022] [Accepted: 09/08/2022] [Indexed: 02/05/2023] Open
Abstract
Group B Streptococcus (GBS) is a leading cause of neonatal infections. The genitourinary and gastrointestinal tract of pregnant women are the main source of transmission to newborns. This work investigated the prevalence and characterized GBS from pregnant women in Rio de Janeiro, Brazil, comparing the periods before (January 2019 to March 2020; 521) and during (May 2020 to March 2021; 285) the COVID-19 pandemic. GBS was detected in 10.8% of anovaginal samples. Considering scenarios before and during the pandemic, GBS colonization rate significantly decreased (13.8% vs. 5.3%; p = 0.0001). No clinical and sociodemographic aspect was associated with GBS carriage (p > 0.05). A total of 80%, 13.8% and 4.6% GBS strains were non-susceptible to tetracycline, erythromycin and clindamycin, respectively. Serotype Ia was the most frequent (47.7%), followed by V (23.1%), II (18.4%), III (7.7%) and Ib (3.1%). An increasing trend of serotypes Ib and V, as well as of antimicrobial resistance rates, and a decreasing trend of serotypes II and III, were observed after the pandemic onset, albeit not statistically significant (p > 0.05). The reduction in GBS colonization rates and alterations in GBS serotypes and resistance profiles during the pandemic were not due to changes in the sociodemographic profile of the population. Considering that control and preventive measures related to the COVID-19 pandemic onset have impacted other infectious diseases, these results shed light on the need for the continuous surveillance of GBS among pregnant women in the post-pandemic era.
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Affiliation(s)
- Natália Silva Costa
- Departamento de Microbiologia Médica, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
| | - André Rio-Tinto
- Departamento de Microbiologia Médica, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
| | - Isabella Bittencourt Ferreira Pinto
- Departamento de Microbiologia Médica, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
| | | | - Amanda de Assis Rocha
- Departamento de Microbiologia Médica, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
| | - Laura Maria Andrade Oliveira
- Departamento de Microbiologia Médica, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
| | - Ana Caroline Nunes Botelho
- Departamento de Microbiologia Médica, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
| | - Sergio Eduardo Longo Fracalanzza
- Departamento de Microbiologia Médica, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
| | - Lucia Martins Teixeira
- Departamento de Microbiologia Médica, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
| | - Jorge Rezende-Filho
- Faculdade de Medicina, Maternidade Escola, Universidade Federal do Rio de Janeiro, Rio de Janeiro 22240-000, Brazil
| | - Penélope Saldanha Marinho
- Faculdade de Medicina, Maternidade Escola, Universidade Federal do Rio de Janeiro, Rio de Janeiro 22240-000, Brazil
| | - Joffre Amim Júnior
- Faculdade de Medicina, Maternidade Escola, Universidade Federal do Rio de Janeiro, Rio de Janeiro 22240-000, Brazil
| | - Stephen Taylor
- UK Health Security Agency, Porton Down, Salisbury SP4 0JG, UK
| | - Steve Thomas
- UK Health Security Agency, Porton Down, Salisbury SP4 0JG, UK
| | - Tatiana Castro Abreu Pinto
- Departamento de Microbiologia Médica, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
- Correspondence:
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156
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Costa L, Martins J, Costa M, Oliveira AI, Leal D, Lencastre L. Clinical Characteristics and Mortality-Associated Factors in COVID-19 Critical Patients in a Portuguese ICU. Cureus 2022; 14:e29610. [PMID: 36320987 PMCID: PMC9601929 DOI: 10.7759/cureus.29610] [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] [Accepted: 08/31/2022] [Indexed: 11/19/2022] Open
Abstract
Introduction: Severe COVID-19 is associated with serious complications and poor outcomes. Older age and underlying comorbidities are known risk factors for severe COVID-19, but a better understanding of baseline characteristics and outcomes of patients with severe COVID-19 is urgently needed. Methods: This study was a retrospective case series of 227 consecutive patients with laboratory-confirmed COVID-19 admitted to the intensive care unit (ICU) at our institution between March 2020 and December 2021. Demographic and clinical data were collected. Results: The median age of patients was 65 years, and 180 (79.3%) were male. Cardiovascular comorbidities were frequent and included hypertension (n=148; 65.2%), dyslipidemia (n=116; 51.1%), obesity (n=114; 50.2%), and diabetes mellitus (n=80; 35.2%). About 20% of the patients had the chronic respiratory disease, with sleep apnea being the most common. Immunosuppression was identified in 13% of the patients, with autoimmunity, post-transplantation, and neoplasms being the most represented causes. Most patients were admitted to the ICU at six to 15 days after symptom onset, corresponding to stages IIb (pulmonary involvement/hypoxia) and III (hyperinflammatory). All patients received systemic steroids, with an average treatment duration of 22 days. Several ventilatory support strategies were used; 80 patients were supported entirely noninvasively with high flow nasal oxygenation and noninvasive ventilation, while 164 patients were invasively ventilated. Most intubations (65%) occurred in the first 24 hours after admission, and the mean duration of mechanical ventilation was 14 days. The reintubation rate was 10%, occurring on average two to three days after planned extubation. Thirty-two tracheostomies were performed. Bacterial co-infection was treated in 75% of patients, and Aspergillus co-infection complicating COVID-19 pneumonia was diagnosed in eight patients. Median ICU and hospital stays were 15 and 25 days, respectively, and the 28-day mortality rate was 38%. Patients over 75 years experienced a higher mortality rate (56%). Increased age and multimorbidity, particularly comprising cardiovascular disease and associated risk factors, were significantly more common in patients who died within 28 days after ICU admission. Conclusions: A large proportion of critically ill COVID-19 patients required prolonged mechanical ventilation. ICU/hospital stay and mortality were particularly elevated in older patients and patients with cardiovascular risk factors. Considerable discrepancy existed between the proportion of patients with microbiological documentation of bacterial infections and those receiving antimicrobials. Improved methods for adequate microbiological diagnosis are needed and stewardship programs should be reinforced.
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157
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Novel D-form of hybrid peptide (D-AP19) rapidly kills Acinetobacter baumannii while tolerating proteolytic enzymes. Sci Rep 2022; 12:15852. [PMID: 36151303 PMCID: PMC9508196 DOI: 10.1038/s41598-022-20236-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Accepted: 09/12/2022] [Indexed: 12/30/2022] Open
Abstract
Antimicrobial peptides (AMPs) are being developed as potent alternative treatments to conventional antibiotics which are unlikely to induce bacterial resistance. They can be designed and modified to possess several druggable properties. We report herein a novel hybrid peptide of modified aurein (A3) and cathelicidin (P7), or A3P7, by a flipping technique. It exhibited potent antibacterial activity against both Gram-negative and -positive pathogenic bacteria but had moderate hemolytic activity. To reduce the sequence length and toxicity, C-terminal truncation was serially performed and eight truncated derivatives (AP12-AP19) were obtained. They had significantly less hemolytic activity while preserving antibacterial activity. Secondary structures of the candidate peptides in environments simulating bacterial membranes (30 mM SDS and 50% TFE), determined by CD spectroscopy, showed α-helical structures consistent with predicted in silico 3D structural models. Among the peptides, AP19 demonstrated the best combination of broad-spectrum antibacterial activity (including toward Acinetobacter baumannii) and minimal hemolytic and cytotoxic activities. A D-form peptide (D-AP19), in which all L-enantiomers were substituted with the D-enantiomers, maintained antibacterial activity in the presence of pepsin, trypsin, proteinase K and human plasma. Both isomers exhibited potent antibacterial activity against multi-drug (MDR) and extensively-drug resistant (XDR) clinical isolates of A. baumannii comparable to the traditional antibiotic, meropenem. D-AP19 displayed rapid killing via membrane disruption and leakage of intracellular contents. Additionally, it showed a low tendency to induce bacterial resistance. Our work suggested that D-AP19 could be further optimized and developed as a novel compound potentially for fighting against MDR or XDR A. baumannii.
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158
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Ioannou P, Astrinaki E, Vitsaxaki E, Bolikas E, Christofaki D, Salvaraki A, Lagoudaki E, Ioannidou E, Karakonstantis S, Saplamidou S, Cleovoulou C, Stamataki E, Ilia S, Messaritaki A, Avdi M, Chalkiadaki A, Papathanasaki S, Markopoulou C, Magouli E, Moustaki M, Kataxaki VA, Skevakis P, Spernovasilis N, Chamilos G, Kofteridis DP. A Point Prevalence Survey of Healthcare-Associated Infections and Antimicrobial Use in Public Acute Care Hospitals in Crete, Greece. Antibiotics (Basel) 2022; 11:antibiotics11091258. [PMID: 36140037 PMCID: PMC9495163 DOI: 10.3390/antibiotics11091258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 09/11/2022] [Accepted: 09/14/2022] [Indexed: 11/16/2022] Open
Abstract
Background: Both healthcare-associated infections (HAIs) and antimicrobial resistance are associated with an increased length of stay and hospital costs, while they have also been linked to high morbidity and mortality rates. In 2016 and 2017, the latest point prevalence survey (PPS) of HAIs and antimicrobial use in European acute care hospitals highlighted an HAI prevalence of 6.5%, while Greece had a higher HAI prevalence of 10%. The aim of this PPS was to record the prevalence of HAIs and antimicrobial use in all eight public acute care hospitals in Crete, Greece during the COVID-19 pandemic in order to highlight the types of infections and antimicrobial practices that need to be prioritized for infection control initiatives. Methods: The PPS was conducted between 30 March and 15 April 2022, according to the ECDC standardized relevant protocol (version 5.3). Statistics were extracted using the ECDC Helics.Win.Net application (software version 4.1.0). Results: A total of 1188 patients were included. The overall point prevalence of patients with at least one HAI was 10.6%. The most frequent types of infections were pneumonia (34.3%), bloodstream infections (10.5%), systemic infections and urinary tract infections (10.5% and 9.1%, respectively). In 14 (12.4%) cases, the pathogen responsible for HAI was SARS-CoV-2 following onsite spread, accounting for almost 10% of all HAIs. Microorganisms were identified in 60.1% of HAIs. Antimicrobials were administered in 711 (59.8%) patients, with 1.59 antimicrobials used per patient. Conclusion: The prevalence of HAI and antimicrobial use among hospitalized patients in Crete, Greece was similar to the national HAI prevalence in 2016 despite the enormous pressure on public hospitals due to the COVID-19 pandemic. Nevertheless, both HAI prevalence and antimicrobial use remain high, underlining the need to implement adequate infection control and antimicrobial stewardship interventions.
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Affiliation(s)
- Petros Ioannou
- Department of Internal Medicine, University Hospital of Heraklion, 71500 Heraklion, Greece
- Correspondence: (P.I.); (D.P.K.)
| | - Eirini Astrinaki
- Infection Control Committee, University Hospital of Heraklion, 71500 Heraklion, Greece
| | - Efsevia Vitsaxaki
- Infection Control Committee, University Hospital of Heraklion, 71500 Heraklion, Greece
| | - Emmanouil Bolikas
- Infection Control Committee, “Venizeleio-Pananeio” General Hospital of Heraklion, 71409 Heraklion, Greece
| | - Despoina Christofaki
- Infection Control Committee, Organic Unit of Agios Nikolaos, General Hospital of Lasithi/General Hospital-Health Center of Neapoli “Dialinakio”, 72100 Agios Nikolaos, Greece
| | - Apostolia Salvaraki
- Infection Control Committee, General Hospital of Rethymno, 74132 Rethymno, Greece
| | - Eirini Lagoudaki
- Infection Control Committee, General Hospital of Chania “St. George”, 73300 Chania, Greece
| | - Eleni Ioannidou
- Infection Control Committee, General Hospital of Rethymno, 74132 Rethymno, Greece
| | | | - Stamatina Saplamidou
- Infection Control Committee, University Hospital of Heraklion, 71500 Heraklion, Greece
| | - Christos Cleovoulou
- Infection Control Committee, General Hospital of Chania “St. George”, 73300 Chania, Greece
| | - Eleni Stamataki
- Infection Control Committee, General Hospital of Chania “St. George”, 73300 Chania, Greece
| | - Stavroula Ilia
- Pediatric Intensive Care Unit, University Hospital of Heraklion, 71500 Heraklion, Greece
- School of Medicine, University of Crete, 71500 Heraklion, Greece
| | - Argyri Messaritaki
- Office of Nursing Services, University Hospital of Heraklion, 71500 Heraklion, Greece
| | - Michaela Avdi
- Internal Medicine, General Hospital of Rethymno, 74132 Rethymno, Greece
| | - Anthoula Chalkiadaki
- Infection Control Committee, Organic Unit of Agios Nikolaos, General Hospital of Lasithi/General Hospital-Health Center of Neapoli “Dialinakio”, 72100 Agios Nikolaos, Greece
| | - Styliani Papathanasaki
- Infection Control Committee, Decentralized Organic Unit of Sitia, General Hospital of Lasithi/General Hospital-Health Center of Neapoli “Dialinakio”, 72300 Sitia, Greece
| | - Chrisanthi Markopoulou
- Infection Control Committee, Decentralized Organic Unit of Ierapetra, General Hospital of Lasithi/General Hospital-Health Center of Neapoli “Dialinakio”, 72200 Ierapetra, Greece
| | - Evagelia Magouli
- Infection Control Committee, General Hospital-Health Care Center of Neapoli “Dialinakeio”, 72400 Neapoli, Greece
| | - Maria Moustaki
- Infection Control Committee, Decentralized Organic Unit of Sitia, General Hospital of Lasithi/General Hospital-Health Center of Neapoli “Dialinakio”, 72300 Sitia, Greece
| | - Vasileia-Athina Kataxaki
- Infection Control Committee, Decentralized Organic Unit of Sitia, General Hospital of Lasithi/General Hospital-Health Center of Neapoli “Dialinakio”, 72300 Sitia, Greece
| | - Panagiotis Skevakis
- Collaborative Center for Clinical Epidemiology and Outcomes Research (CLEO), 15451 Athens, Greece
| | - Nikolaos Spernovasilis
- School of Medicine, University of Crete, 71500 Heraklion, Greece
- German Oncology Center, 4108 Limassol, Cyprus
| | - Georgios Chamilos
- Department of Clinical Microbiology, University Hospital of Heraklion, 71500 Heraklion, Greece
| | - Diamantis P. Kofteridis
- Department of Internal Medicine, University Hospital of Heraklion, 71500 Heraklion, Greece
- Correspondence: (P.I.); (D.P.K.)
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159
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Seleno-Metabolites and Their Precursors: A New Dawn for Several Illnesses? Metabolites 2022; 12:metabo12090874. [PMID: 36144278 PMCID: PMC9504997 DOI: 10.3390/metabo12090874] [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: 08/30/2022] [Revised: 09/12/2022] [Accepted: 09/13/2022] [Indexed: 01/18/2023] Open
Abstract
Selenium (Se) is an essential element for human health as it is involved in different physiological functions. Moreover, a great number of Se compounds can be considered potential agents in the prevention and treatment of some diseases. It is widely recognized that Se activity is related to multiple factors, such as its chemical form, dose, and its metabolism. The understanding of its complex biochemistry is necessary as it has been demonstrated that the metabolites of the Se molecules used to be the ones that exert the biological activity. Therefore, the aim of this review is to summarize the recent information about its most remarkable metabolites of acknowledged biological effects: hydrogen selenide (HSe−/H2Se) and methylselenol (CH3SeH). In addition, special attention is paid to the main seleno-containing precursors of these derivatives and their role in different pathologies.
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160
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Singulani JL, Silva DL, Lima CM, Magalhães VCR, Baltazar LM, Peres NTA, Caligiorne RB, Moura AS, Santos ARO, Fereguetti T, Martins JC, Rabelo LF, Lyon AC, Johann S, Falcão JP, Santos DA. The impact of COVID-19 on antimicrobial prescription and drug resistance in fungi and bacteria. Braz J Microbiol 2022; 53:1925-1935. [PMID: 36087244 PMCID: PMC9463970 DOI: 10.1007/s42770-022-00818-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 08/22/2022] [Indexed: 11/29/2022] Open
Abstract
Secondary infections are one of the complications in COVID-19 patients. We aimed to analyze the antimicrobial prescriptions and their influence on drug resistance in fungi and bacteria isolated from severely ill COVID-19 patients. Seventy-nine severely ill COVID-19 hospitalized patients with secondary bacterial or fungal infections were included. We analyzed the prescribed antimicrobial regimen for these patients and the resistance profiles of bacterial and fungal isolates. In addition, the association between drug resistance and patients’ outcome was analyzed using correlation tests. The most prescribed antibacterial were ceftriaxone (90.7% of patients), vancomycin (86.0%), polymyxin B (74.4%), azithromycin (69.8%), and meropenem (67.4%). Micafungin and fluconazole were used by 22.2 and 11.1% of patients, respectively. Multidrug-resistant (MDR) infections were a common complication in severely ill COVID-19 patients in our cohort since resistant bacteria strains were isolated from 76.7% of the patients. Oxacillin resistance was observed in most Gram-positive bacteria, whereas carbapenem and cephalosporin resistance was detected in most Gram-negative strains. Azole resistance was identified among C. glabrata and C. tropicalis isolates. Patients who used more antimicrobials stayed hospitalized longer than the others. The patient’s age and the number of antibacterial agents used were associated with the resistance phenotype. The susceptibility profile of isolates obtained from severely ill COVID-19 patients highlighted the importance of taking microbial resistance into account when managing these patients. The continuous surveillance of resistant/MDR infection and the rational use of antimicrobials are of utmost importance, especially for long-term hospitalized patients with COVID-19.
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Affiliation(s)
- Junya L Singulani
- Department of Microbiology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Av. Antonio Carlos, 6627, Pampulha, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Danielle L Silva
- Department of Microbiology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Av. Antonio Carlos, 6627, Pampulha, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Caroline M Lima
- Department of Microbiology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Av. Antonio Carlos, 6627, Pampulha, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Vanessa C R Magalhães
- Department of Microbiology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Av. Antonio Carlos, 6627, Pampulha, Belo Horizonte, Minas Gerais, 31270-901, Brazil
- Hospital Eduardo de Menezes, Fundação Hospitalar Do Estado de Minas Gerais (FHEMIG), Belo Horizonte, Minas Gerais, Brazil
| | - Ludmila M Baltazar
- Department of Microbiology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Av. Antonio Carlos, 6627, Pampulha, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Nalu T A Peres
- Department of Microbiology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Av. Antonio Carlos, 6627, Pampulha, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Rachel B Caligiorne
- Center of Post-Graduation and Research - IEP, Hospital Santa Casa de Belo Horizonte, Belo Horizonte, Minas Gerais, Brazil
| | - Alexandre S Moura
- Hospital Eduardo de Menezes, Fundação Hospitalar Do Estado de Minas Gerais (FHEMIG), Belo Horizonte, Minas Gerais, Brazil
- Center of Post-Graduation and Research - IEP, Hospital Santa Casa de Belo Horizonte, Belo Horizonte, Minas Gerais, Brazil
| | - Ana Raquel O Santos
- Department of Microbiology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Av. Antonio Carlos, 6627, Pampulha, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Tatiani Fereguetti
- Hospital Eduardo de Menezes, Fundação Hospitalar Do Estado de Minas Gerais (FHEMIG), Belo Horizonte, Minas Gerais, Brazil
| | - Juliana C Martins
- Hospital Eduardo de Menezes, Fundação Hospitalar Do Estado de Minas Gerais (FHEMIG), Belo Horizonte, Minas Gerais, Brazil
| | - Lívia F Rabelo
- Hospital Eduardo de Menezes, Fundação Hospitalar Do Estado de Minas Gerais (FHEMIG), Belo Horizonte, Minas Gerais, Brazil
| | - Ana C Lyon
- Hospital Eduardo de Menezes, Fundação Hospitalar Do Estado de Minas Gerais (FHEMIG), Belo Horizonte, Minas Gerais, Brazil
| | - Susana Johann
- Department of Microbiology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Av. Antonio Carlos, 6627, Pampulha, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Juliana P Falcão
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo-USP, Ribeirao Preto, Sao Paulo, Brazil
| | - Daniel A Santos
- Department of Microbiology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Av. Antonio Carlos, 6627, Pampulha, Belo Horizonte, Minas Gerais, 31270-901, Brazil.
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161
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Daneshnia F, de Almeida Júnior JN, Arastehfar A, Lombardi L, Shor E, Moreno L, Mendes AV, Barberino MG, Yamamoto DT, Butler G, Perlin DS, Colombo AL. Determinants of fluconazole resistance and echinocandin tolerance in C. parapsilosis isolates causing a large clonal candidemia outbreak among COVID-19 patients in a Brazilian ICU. Emerg Microbes Infect 2022; 11:2264-2274. [PMID: 36066554 PMCID: PMC9542950 DOI: 10.1080/22221751.2022.2117093] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Patients presenting with severe COVID-19 are predisposed to acquire secondary fungal infections such as COVID-19-associated candidemia (CAC), which are associated with poor clinical outcomes despite antifungal treatment. The extreme burden imposed on clinical facilities during the COVID-19 pandemic has provided a permissive environment for the emergence of clonal outbreaks of multiple Candida species, including C. auris and C. parapsilosis. Here we report the largest clonal CAC outbreak to date caused by fluconazole resistant (FLZR) and echinocandin tolerant (ECT) C. parapsilosis. Sixty C. parapsilosis strains were obtained from 57 patients at a tertiary care hospital in Brazil, 90% of them were FLZR and ECT. Although only 35.8% of FLZR isolates contained an ERG11 mutation, all of them contained the TAC1L518F mutation and significantly overexpressed CDR1. Introduction of TAC1L518F into a susceptible background increased the MIC of fluconazole and voriconazole 8-fold and resulted in significant basal overexpression of CDR1. Additionally, FLZR isolates exclusively harbored E1939G outside of Fks1 hotspot-2, which did not confer echinocandin resistance, but significantly increased ECT. Multilocus microsatellite typing showed that 51/60 (85%) of the FLZR isolates belonged to the same cluster, while the susceptible isolates each represented a distinct lineage. Finally, biofilm production in FLZR isolates was significantly lower than in susceptible counterparts Suggesting that it may not be an outbreak determinant. In summary, we show that TAC1L518F and FKS1E1393G confer FLZR and ECT, respectively, in CAC-associated C. parapsilosis. Our study underscores the importance of antifungal stewardship and effective infection control strategies to mitigate clonal C. parapsilosis outbreaks.
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Affiliation(s)
- Farnaz Daneshnia
- Center for Discovery and Innovation, Hackensack Meridian Health, Nutley, NJ 07110, USA
| | - João N de Almeida Júnior
- Special Mycology Laboratory, Federal University of São Paulo, Brazil.,Clinical Laboratory, Hospital Israelita Albert Einstein, São Paulo, Brazil
| | - Amir Arastehfar
- Center for Discovery and Innovation, Hackensack Meridian Health, Nutley, NJ 07110, USA
| | - Lisa Lombardi
- School of Biomolecular and Biomedical Science, Conway Institute, University College Dublin, Belfield, Dublin, Ireland
| | - Erika Shor
- Center for Discovery and Innovation, Hackensack Meridian Health, Nutley, NJ 07110, USA.,Hackensack Meridian School of Medicine, Nutley NJ 07710, USA
| | - Lis Moreno
- Hospital São Rafael, Salvador, Brazil.,Instituto D'OR de Pesquisa e Ensino (IDOR)
| | - Ana Verena Mendes
- Hospital São Rafael, Salvador, Brazil.,Instituto D'OR de Pesquisa e Ensino (IDOR)
| | | | | | - Geraldine Butler
- School of Biomolecular and Biomedical Science, Conway Institute, University College Dublin, Belfield, Dublin, Ireland
| | - David S Perlin
- Center for Discovery and Innovation, Hackensack Meridian Health, Nutley, NJ 07110, USA.,Hackensack Meridian School of Medicine, Nutley NJ 07710, USA.,Georgetown University Lombardi Comprehensive Cancer Center, Washington DC 20057, USA
| | - Arnaldo Lopes Colombo
- Special Mycology Laboratory, Federal University of São Paulo, Brazil.,Department of Medicine, Division of Infectious Diseases, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
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162
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Sheldon JR, Himmel LE, Kunkle DE, Monteith AJ, Maloney KN, Skaar EP. Lipocalin-2 is an essential component of the innate immune response to Acinetobacter baumannii infection. PLoS Pathog 2022; 18:e1010809. [PMID: 36054235 PMCID: PMC9477428 DOI: 10.1371/journal.ppat.1010809] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 09/15/2022] [Accepted: 08/12/2022] [Indexed: 12/11/2022] Open
Abstract
Acinetobacter baumannii is an opportunistic pathogen and an emerging global health threat. Within healthcare settings, major presentations of A. baumannii include bloodstream infections and ventilator-associated pneumonia. The increased prevalence of ventilated patients during the COVID-19 pandemic has led to a rise in secondary bacterial pneumonia caused by multidrug resistant (MDR) A. baumannii. Additionally, due to its MDR status and the lack of antimicrobial drugs in the development pipeline, the World Health Organization has designated carbapenem-resistant A. baumannii to be its priority critical pathogen for the development of novel therapeutics. To better inform the design of new treatment options, a comprehensive understanding of how the host contains A. baumannii infection is required. Here, we investigate the innate immune response to A. baumannii by assessing the impact of infection on host gene expression using NanoString technology. The transcriptional profile observed in the A. baumannii infected host is characteristic of Gram-negative bacteremia and reveals expression patterns consistent with the induction of nutritional immunity, a process by which the host exploits the availability of essential nutrient metals to curtail bacterial proliferation. The gene encoding for lipocalin-2 (Lcn2), a siderophore sequestering protein, was the most highly upregulated during A. baumannii bacteremia, of the targets assessed, and corresponds to robust LCN2 expression in tissues. Lcn2-/- mice exhibited distinct organ-specific gene expression changes including increased transcription of genes involved in metal sequestration, such as S100A8 and S100A9, suggesting a potential compensatory mechanism to perturbed metal homeostasis. In vitro, LCN2 inhibits the iron-dependent growth of A. baumannii and induces iron-regulated gene expression. To elucidate the role of LCN2 in infection, WT and Lcn2-/- mice were infected with A. baumannii using both bacteremia and pneumonia models. LCN2 was not required to control bacterial growth during bacteremia but was protective against mortality. In contrast, during pneumonia Lcn2-/- mice had increased bacterial burdens in all organs evaluated, suggesting that LCN2 plays an important role in inhibiting the survival and dissemination of A. baumannii. The control of A. baumannii infection by LCN2 is likely multifactorial, and our results suggest that impairment of iron acquisition by the pathogen is a contributing factor. Modulation of LCN2 expression or modifying the structure of LCN2 to expand upon its ability to sequester siderophores may thus represent feasible avenues for therapeutic development against this pathogen. A lack of therapeutic options has prompted the World Health Organization to designate multidrug-resistant Acinetobacter baumannii as its priority critical pathogen for research into new treatment strategies. The mechanisms employed by A. baumannii to cause disease and the host tactics exercised to constrain infection are not fully understood. Here, we further characterize the innate immune response to A. baumannii infection. We identify nutritional immunity, a process where the availability of nutrient metals is exploited to restrain bacterial growth, as being induced during infection. The gene encoding for lipocalin-2 (Lcn2), a protein that can impede iron uptake by bacteria, is highly upregulated in infected mice, and corresponds to robust LCN2 detection in the tissues. We find that LCN2 is crucial to reducing mortality from A. baumannii bacteremia and inhibits dissemination of the pathogen during pneumonia. In wild-type and Lcn2-deficient mice, broader transcriptional profiling reveals expression patterns consistent with the known response to Gram-negative bacteremia. Although the role of LCN2 in infection is likely multifactorial, we find its antimicrobial effects are at least partly exerted by impairing iron acquisition by A. baumannii. Facets of nutritional immunity, such as LCN2, may be exploited as novel therapeutics in combating A. baumannii infection.
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Affiliation(s)
- Jessica R. Sheldon
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
- Vanderbilt Institute for Infection, Immunology, and Inflammation, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
| | - Lauren E. Himmel
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
| | - Dillon E. Kunkle
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
- Vanderbilt Institute for Infection, Immunology, and Inflammation, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
| | - Andrew J. Monteith
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
- Vanderbilt Institute for Infection, Immunology, and Inflammation, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
| | - K. Nichole Maloney
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
- Vanderbilt Institute for Infection, Immunology, and Inflammation, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
| | - Eric P. Skaar
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
- Vanderbilt Institute for Infection, Immunology, and Inflammation, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
- Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee, United States of America
- * E-mail:
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163
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Qadri H, Haseeb Shah A, Mudasir Ahmad S, Alshehri B, Almilaibary A, Ahmad Mir M. Natural products and their semi-synthetic derivatives against antimicrobial-resistant human pathogenic bacteria and fungi. Saudi J Biol Sci 2022; 29:103376. [PMID: 35874656 PMCID: PMC9290337 DOI: 10.1016/j.sjbs.2022.103376] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 06/09/2022] [Accepted: 07/10/2022] [Indexed: 12/24/2022] Open
Abstract
COVID-19 pandemic has traumatized the entire world. During this outbreak, an upsurge in MDR-associated pathogenic microbial organisms has been recorded. The increasing human microbial diseases pose a severe danger to global human safety. The infectious microbes have developed multiple tolerance strategies to overcome the negative drug impacts. Several naturally occurring chemicals produced from bacteria, plants, animals, marine species, and other sources with antimicrobial characteristics have been reviewed. These compounds show promise in minimizing the globally increasing microbial diseases.
Human infectious diseases caused by various microbial pathogens, in general, impact a large population of individuals every year. These microbial diseases that spread quickly remain to be a big issue in various health-related domains and to withstand the negative drug impacts, the antimicrobial-resistant pathogenic microbial organisms (pathogenic bacteria and pathogenic fungi) have developed a variety of resistance processes against many antimicrobial drug classes. During the COVID-19 outbreak, there seems to be an upsurge in drug and multidrug resistant-associated pathogenic microbial species. The preponderance of existing antimicrobials isn’t completely effective, which limits their application in clinical settings. Several naturally occurring chemicals produced from bacteria, plants, animals, marine species, and other sources are now being studied for antimicrobial characteristics. These natural antimicrobial compounds extracted from different sources have been demonstrated to be effective against a variety of diseases, although plants remain the most abundant source. These compounds have shown promise in reducing the microbial diseases linked to the development of drug tolerance and resistance. This paper offers a detailed review of some of the most vital and promising natural compounds and their derivatives against various human infectious microbial organisms. The inhibitory action of different natural antimicrobial compounds, and their possible mechanism of antimicrobial action against a range of pathogenic fungal and bacterial organisms, is provided. The review will be useful in refining current antimicrobial (antifungal and antibacterial) medicines as well as establishing new treatment strategies to tackle the rising number of human bacterial and fungal-associated infections.
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Affiliation(s)
- Hafsa Qadri
- Department of Bioresources, School of Biological Sciences, University of Kashmir, Srinagar 190006, India
| | - Abdul Haseeb Shah
- Department of Bioresources, School of Biological Sciences, University of Kashmir, Srinagar 190006, India
| | | | - Bader Alshehri
- Department of Medical Laboratory Science, College of Applied Medical Sciences, Majmaah University, Majmaah 11952, Saudi Arabia
| | - Abdullah Almilaibary
- Department of Family & Community Medicine, Faculty of Medicine, Albaha University, Alaqiq 307501, Saudi Arabia
| | - Manzoor Ahmad Mir
- Department of Bioresources, School of Biological Sciences, University of Kashmir, Srinagar 190006, India
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164
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Metan G, Demir Çuha M, Hazirolan G, Telli Dizman G, Tanriverdi ES, Otlu B, Tas Z, Zarakolu P, Arik Z, Topeli A, Akinci SB, Ünal S, Uzun Ö. The impact of COVID-19 pandemic on nosocomial multidrug-resistant bacterial bloodstream infections and antibiotic consumption in a tertiary care hospital. GMS HYGIENE AND INFECTION CONTROL 2022; 17:Doc15. [PMID: 36157382 PMCID: PMC9487780 DOI: 10.3205/dgkh000418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Abstract
We investigated the change in the epidemiology of nosocomial bloodstream infections (BSIs) caused by multidrug-resistant bacteria during Coronavirus Disease (COVID-19) and antibiotic consumption rates at a pandemic hospital and at the Oncology Hospital which operated as COVID-19-free on the same university campus. Significant increases in the infection density rate (IDRs) of BSIs caused by carbapenem-resistant Acinetobacter baumannii (CRAB) and ampicillin-resistant Enterococcus faecium (ARE) were detected at the pandemic hospital, whereas carbapenem-resistant Klebsiella pneumoniae BSIs were increased at the non-pandemic Oncology Hospital. Pulsed field gel electrophoresis showed a polyclonal outbreak of CRAB in COVID-19 intensive care units. Antibiotic consumption rates were increased for almost all antibiotics, and was most significant for meropenem at both of the hospitals. Increased IDRs of CRAB and ARE BSIs as well as an increased consumption rate of broad-spectrum antibiotics emphasize the importance of a multimodal infection prevention strategy combined with an active antibiotic stewardship program.
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Affiliation(s)
- Gökhan Metan
- Department of Infectious Diseases and Clinical Microbiology, Hacettepe University Faculty of Medicine, Ankara, Turkey,Infection Control Committee Hacettepe University Hospitals, Ankara, Turkey,*To whom correspondence should be addressed: Gökhan Metan, Hacettepe Üniversitesi Tıp Fakültesi Hastanesi İç Hastalıkları Binası Kat: 1, Enfeksiyon Hastalıkları ve Klinik Mikrobiyoloji Anabilim Dalı, Ankara, Turkey, E-mail: ,
| | - Mervenur Demir Çuha
- Department of Medical Microbiology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Gülsen Hazirolan
- Department of Medical Microbiology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Gülçin Telli Dizman
- Department of Infectious Diseases and Clinical Microbiology, Hacettepe University Faculty of Medicine, Ankara, Turkey,Infection Control Committee Hacettepe University Hospitals, Ankara, Turkey
| | - Elif Seren Tanriverdi
- Department of Medical Microbiology, İnönü University Faculty of Medicine, Malatya, Turkey
| | - Baris Otlu
- Department of Medical Microbiology, İnönü University Faculty of Medicine, Malatya, Turkey
| | - Zahit Tas
- Department of Infectious Diseases and Clinical Microbiology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Pinar Zarakolu
- Department of Infectious Diseases and Clinical Microbiology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Zafer Arik
- Division of Medical Oncology, Department of Internal Medicine, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Arzu Topeli
- Section of Intensive Care Medicine, Department of Internal Medicine, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Seda Banu Akinci
- Section of Intensive Care Medicine Department of Anesthesiology and Reanimation, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Serhat Ünal
- Department of Infectious Diseases and Clinical Microbiology, Hacettepe University Faculty of Medicine, Ankara, Turkey,Infection Control Committee Hacettepe University Hospitals, Ankara, Turkey
| | - Ömrüm Uzun
- Department of Infectious Diseases and Clinical Microbiology, Hacettepe University Faculty of Medicine, Ankara, Turkey
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165
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Boles JE, Bennett C, Baker J, Hilton KLF, Kotak HA, Clark ER, Long Y, White LJ, Lai HY, Hind CK, Sutton JM, Garrett MD, Cheasty A, Ortega-Roldan JL, Charles M, Haynes CJE, Hiscock JR. Establishing the selective phospholipid membrane coordination, permeation and lysis properties for a series of 'druggable' supramolecular self-associating antimicrobial amphiphiles. Chem Sci 2022; 13:9761-9773. [PMID: 36091903 PMCID: PMC9400670 DOI: 10.1039/d2sc02630a] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 08/03/2022] [Indexed: 01/19/2023] Open
Abstract
The rise of antimicrobial resistance remains one of the greatest global health threats facing humanity. Furthermore, the development of novel antibiotics has all but ground to a halt due to a collision of intersectional pressures. Herein we determine the antimicrobial efficacy for 14 structurally related supramolecular self-associating amphiphiles against clinically relevant Gram-positive methicillin resistant Staphylococcus aureus and Gram-negative Escherichia coli. We establish the ability of these agents to selectively target phospholipid membranes of differing compositions, through a combination of computational host:guest complex formation simulations, synthetic vesicle lysis, adhesion and membrane fluidity experiments, alongside our novel 1H NMR CPMG nanodisc coordination assays, to verify a potential mode of action for this class of compounds and enable the production of evermore effective next-generation antimicrobial agents. Finally, we select a 7-compound subset, showing two lead compounds to exhibit 'druggable' profiles through completion of a variety of in vivo and in vitro DMPK studies.
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Affiliation(s)
- Jessica E. Boles
- School of Chemistry and Forensics, University of KentCanterburyCT2 7NHUK,School of Biosciences, University of KentCanterburyCT2 7NJUK
| | | | | | - Kira L. F. Hilton
- School of Chemistry and Forensics, University of KentCanterburyCT2 7NHUK
| | - Hiral A. Kotak
- Chemistry Department, UCL20 Gordon StreetLondon WC1H 0AJUK
| | - Ewan R. Clark
- School of Chemistry and Forensics, University of KentCanterburyCT2 7NHUK
| | - Yifan Long
- Chemistry Department, UCL20 Gordon StreetLondon WC1H 0AJUK
| | - Lisa J. White
- School of Chemistry and Forensics, University of KentCanterburyCT2 7NHUK
| | - Hin Yuk Lai
- Chemistry Department, UCL20 Gordon StreetLondon WC1H 0AJUK
| | - Charlotte K. Hind
- Research and EvaluationPorton Down, UKHSA, Porton DownSalisbury SP4 0JGUK
| | - J. Mark Sutton
- Research and EvaluationPorton Down, UKHSA, Porton DownSalisbury SP4 0JGUK
| | | | - Anne Cheasty
- Cancer Research Horizons2 Redman PlaceLondonE20 1JQUK,ExscientiaThe Schrödinger Building, Heatley Road, Oxford Science ParkOxfordOX4 4GEUK
| | | | - Mark Charles
- Cancer Research Horizons2 Redman PlaceLondonE20 1JQUK
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166
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Ferreira-Junior AS, Borgonovi TF, De Salis LVV, Leite AZ, Dantas AS, De Salis GVV, Cruz GNF, De Oliveira LFV, Gomes E, Penna ALB, De Oliveira GLV. Detection of Intestinal Dysbiosis in Post-COVID-19 Patients One to Eight Months after Acute Disease Resolution. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph191610189. [PMID: 36011823 PMCID: PMC9408204 DOI: 10.3390/ijerph191610189] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 08/13/2022] [Accepted: 08/14/2022] [Indexed: 06/09/2023]
Abstract
The intestinal microbiota plays an important role in the immune response against viral infections, modulating both innate and adaptive immune responses. The cytokine storm is associated with COVID-19 severity, and the patient's immune status is influenced by the intestinal microbiota in a gut-lung bidirectional interaction. In this study, we evaluate the intestinal microbiota of Brazilian patients in different post-COVID-19 periods, and correlate this with clinical data and the antibiotic therapy used during the acute phase. DNA extracted from stool samples was sequenced and total anti-SARS-CoV-2 antibodies and C-reactive protein were quantified. Compared with controls, there were significant differences in the microbiota diversity in post-COVID-19 patients, suggesting an intestinal dysbiosis even several months after acute disease resolution. Additionally, we detected some genera possibly associated with the post-COVID-19 dysbiosis, including Desulfovibrio, Haemophillus, Dialister, and Prevotella, in addition to decreased beneficial microbes, associated with antibiotic-induced dysbiosis, such as Bifidobacterium and Akkermansia. Therefore, our hypothesis is that dysbiosis and the indiscriminate use of antibiotics during the pandemic may be associated with post-COVID-19 clinical manifestations. In our study, 39% (n = 58) of patients reported symptoms, including fatigue, dyspnea, myalgia, alopecia, anxiety, memory loss, and depression. These data suggest that microbiota modulation may represent a target for recovery from acute COVID-19 and a therapeutic approach for post-COVID-19 sequelae.
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Affiliation(s)
| | - Tais Fernanda Borgonovi
- Food Engineering and Technology Department, Sao Paulo State University (UNESP), Sao Jose do Rio Preto 15054-000, Brazil
| | | | - Aline Zazeri Leite
- Microbiology Program, Institute of Biosciences, Humanities and Exact Sciences (IBILCE), Sao Jose do Rio Preto 15054-000, Brazil
| | | | | | | | | | - Eleni Gomes
- Microbiology Program, Institute of Biosciences, Humanities and Exact Sciences (IBILCE), Sao Jose do Rio Preto 15054-000, Brazil
| | - Ana Lúcia Barretto Penna
- Microbiology Program, Institute of Biosciences, Humanities and Exact Sciences (IBILCE), Sao Jose do Rio Preto 15054-000, Brazil
- Food Engineering and Technology Department, Sao Paulo State University (UNESP), Sao Jose do Rio Preto 15054-000, Brazil
| | - Gislane Lelis Vilela De Oliveira
- Microbiology Program, Institute of Biosciences, Humanities and Exact Sciences (IBILCE), Sao Jose do Rio Preto 15054-000, Brazil
- Food Engineering and Technology Department, Sao Paulo State University (UNESP), Sao Jose do Rio Preto 15054-000, Brazil
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167
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Functionalized Self-Assembled Monolayers: Versatile Strategies to Combat Bacterial Biofilm Formation. Pharmaceutics 2022; 14:pharmaceutics14081613. [PMID: 36015238 PMCID: PMC9415113 DOI: 10.3390/pharmaceutics14081613] [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: 06/30/2022] [Revised: 07/29/2022] [Accepted: 07/30/2022] [Indexed: 11/16/2022] Open
Abstract
Bacterial infections due to biofilms account for up to 80% of bacterial infections in humans. With the increased use of antibiotic treatments, indwelling medical devices, disinfectants, and longer hospital stays, antibiotic resistant infections are sharply increasing. Annual deaths are predicted to outpace cancer and diabetes combined by 2050. In the past two decades, both chemical and physical strategies have arisen to combat biofilm formation on surfaces. One such promising chemical strategy is the formation of a self-assembled monolayer (SAM), due to its small layer thickness, strong covalent bonds, typically facile synthesis, and versatility. With the goal of combating biofilm formation, the SAM could be used to tether an antibacterial agent such as a small-molecule antibiotic, nanoparticle, peptide, or polymer to the surface, and limit the agent’s release into its environment. This review focuses on the use of SAMs to inhibit biofilm formation, both on their own and by covalent grafting of a biocidal agent, with the potential to be used in indwelling medical devices. We conclude with our perspectives on ongoing challenges and future directions for this field.
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168
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Boyanova L, Markovska R, Mitov I, Gergova R. Non-viral infections and antimicrobial resistance in the time of COVID-19: what to expect? Expert Rev Clin Pharmacol 2022; 15:907-909. [PMID: 35912839 DOI: 10.1080/17512433.2022.2108403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- Lyudmila Boyanova
- Department of Medical Microbiology, Medical University of Sofia, Sofia, Bulgaria
| | - Rumyana Markovska
- Department of Medical Microbiology, Medical University of Sofia, Sofia, Bulgaria
| | - Ivan Mitov
- Department of Medical Microbiology, Medical University of Sofia, Sofia, Bulgaria
| | - Raina Gergova
- Department of Medical Microbiology, Medical University of Sofia, Sofia, Bulgaria
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169
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Bouzaheur A, Bouchoucha A, Si Larbi K, Zaater S. Experimental and DFT studies of a novel Schiff base sulfonamide derivative ligand and its palladium (II) and platinum (IV) complexes: antimicrobial activity, cytotoxicity, and molecular docking study. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132811] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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170
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Antimicrobial Resistance Patterns of Bacterial and Fungal Isolates in COVID-19. ARCHIVES OF CLINICAL INFECTIOUS DISEASES 2022. [DOI: 10.5812/archcid-121580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background: The pattern of bacterial infection in coronavirus disease 2019 (COVID-19) patients differ worldwide. Objectives: This study aimed to determine the patterns of bacterial infections and the antibiotic resistance profile by VITEK 2 (bioMérieux, France) in the culture of blood samples from hospitalized patients with COVID-19. Methods: This retrospective descriptive cross-sectional was conducted on a total of 25 patients with critical COVID-19 admitted to Imam Reza Hospital in Mashhad, Iran, during the first three COVID-19 peaks (2019 - 2020). Results: Among Gram-positive bacteria, two strains isolated from Staphylococcus aureus were methicillin-resistant S. aureus at a concentration of > 2 μg/mL. Enterococcus was vancomycin-resistant Enterococcus at a concentration of higher than 4 μg/mL (the minimum inhibitory concentration [MIC] ≥ 32). Among Gram-negative bacteria, three strains of Acinetobacter baumannii complex were extensively drug-resistant. Conclusions: There is evidence of the remarkable increase of various antibiotics’ MIC during the COVID-19 pandemic, which highlights the impact of the use of steroids on the risk of developing antimicrobial resistance during the COVID-19 pandemic.
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171
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Shinohara DR, de Carvalho NMM, Mattos MDSFD, Fedrigo NH, Mitsugui CS, Carrara-Marroni FE, Nishiyama SAB, Tognim MCB. Evaluation of phenotypic methods for detection of polymyxin B-resistant bacteria. J Microbiol Methods 2022; 199:106531. [PMID: 35772571 DOI: 10.1016/j.mimet.2022.106531] [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: 03/08/2022] [Revised: 06/17/2022] [Accepted: 06/23/2022] [Indexed: 12/27/2022]
Abstract
Determination of sensitivity to polymyxins has always been a challenge, especially in clinical laboratory routines. This study evaluated two rapid, simple, and inexpensive phenotypic methods to test polymyxin B (PMB) susceptibility in Enterobacterales and non-fermenting Gram-negative bacilli. One hundred isolates were used in the tests. The isolates were collected in three hospitals in southern and southeastern Brazil from 1995 to 2019. We compared broth microdilution (reference method) with the broth disk elution test and modified drop test, using polymyxin B -disk or PMB -powder in 2 concentrations (12 and 16 μg/ml). For the broth disk elution and modified drop test with the concentration of 12 μg/ml, categorical agreement values exceeded 90%. The modified drop test with a concentration of 12 μg/ml and broth disk elution may be excellent for initial screening of polymyxin-resistance in laboratory routines. Moreover, these methods are simple and use inexpensive supplies, and may optimize therapeutic decisions.
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172
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Point-of-care COVID-19 testing: colorimetric diagnosis using rapid and ultra-sensitive ramified rolling circle amplification. Anal Bioanal Chem 2022; 414:5907-5915. [PMID: 35715585 PMCID: PMC9205388 DOI: 10.1007/s00216-022-04156-7] [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: 03/25/2022] [Revised: 05/17/2022] [Accepted: 05/30/2022] [Indexed: 12/24/2022]
Abstract
In this paper, we report a molecular diagnostic system—combining a colorimetric probe (RHthio-CuSO4) for pyrophosphate sensing and isothermal gene amplification (ramified rolling circle amplification)—that operates with high selectivity and sensitivity for clinical point-of-care diagnosis of SARS-CoV-2. During the polymerase phase of the DNA amplification process, pyrophosphate was released from the nucleotide triphosphate as a side product, which was then sensed by our RHthio-CuSO4 probe with a visible color change. This simple colorimetric diagnostic system allowed highly sensitive (1.13 copies/reaction) detection of clinical SARS-CoV-2 within 1 h, while also displaying high selectivity, as evidenced by its discrimination of two respiratory viral genomes (human rhino virus and respiratory syncytial virus) from that of SARS-CoV-2. All of the reactions in this system were performed at a single temperature, with positive identification being made by the naked eye, without requiring any instrumentation. The high sensitivity and selectivity, short detection time (1 h), simple treatment (one-pot reaction), isothermal amplification, and colorimetric detection together satisfy the requirements for clinical point-of-care detection of SARS-CoV-2. Therefore, we believe that this combination of a colorimetric probe and isothermal amplification will be useful for point-of-care testing to prevent the propagation of COVID-19.
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173
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Non-Antibiotic Drug Repositioning as an Alternative Antimicrobial Approach. Antibiotics (Basel) 2022; 11:antibiotics11060816. [PMID: 35740222 PMCID: PMC9220406 DOI: 10.3390/antibiotics11060816] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 06/10/2022] [Accepted: 06/15/2022] [Indexed: 12/24/2022] Open
Abstract
The worldwide scenario of antibiotic resistance and the falling number of funds for the development of novel antibiotics have led research efforts toward the study of specific cost-effective strategies aimed at discovering drugs against microbial infections. Among the potential options, drug repositioning, which has already exhibited satisfactory results in other medical fields, came out as the most promising. It consists of finding new uses for previously approved medicines and, over the years, many “repurposed drugs” displayed some encouraging in vitro and in vivo results beyond their initial application. The principal theoretical justification for reusing already existing drugs is that they have known mechanisms of action and manageable side effects. Reuse of old drugs is now considered an interesting approach to overcome the drawbacks of conventional antibiotics. The purpose of this review is to offer the reader a panoramic view of the updated studies concerning the repositioning process of different classes of non-antibiotic drugs in the antimicrobial field. Several research works reported the ability of some non-steroidal anti-inflammatory drugs (NSAIDs), antidepressants, antipsychotics, and statins to counteract the growth of harmful microorganisms, demonstrating an interesting winning mode to fight infectious diseases caused by antimicrobial resistant bacteria.
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174
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Schier C, Foerster (née Reiter) J, Heupel M, Dörner P, Klaas M, Schröder W, Rink L, Slusarenko AJ, Gruhlke MCH. Allicin as a Volatile or Nebulisable Antimycotic for the Treatment of Pulmonary Mycoses: In Vitro Studies Using a Lung Flow Test Rig. Int J Mol Sci 2022; 23:ijms23126607. [PMID: 35743050 PMCID: PMC9224539 DOI: 10.3390/ijms23126607] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 06/08/2022] [Accepted: 06/09/2022] [Indexed: 11/29/2022] Open
Abstract
Fungal infections of the lung are an increasing problem worldwide and the search for novel therapeutic agents is a current challenge due to emerging resistance to current antimycotics. The volatile defence substance allicin is formed naturally by freshly injured garlic plants and exhibits broad antimicrobial potency. Chemically synthesised allicin was active against selected fungi upon direct contact and via the gas phase at comparable concentrations to the pharmaceutically used antimycotic amphotericin B. We investigated the suppression of fungal growth by allicin vapour and aerosols in vitro in a test rig at air flow conditions mimicking the human lung. The effect of allicin via the gas phase was enhanced by ethanol. Our results suggest that allicin is a potential candidate for development for use in antifungal therapy for lung and upper respiratory tract infections.
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Affiliation(s)
- Christina Schier
- Department of Plant Physiology, RWTH Aachen University, 52074 Aachen, Germany; (A.J.S.); (M.C.H.G.)
- Correspondence:
| | | | - Monika Heupel
- Landwirtschaftskammer Rheinland, 50765 Köln-Auweiler, Germany;
| | - Philipp Dörner
- Chair of Fluid Mechanics and Institute of Aerodynamics, RWTH Aachen University, 52062 Aachen, Germany; (P.D.); (M.K.); (W.S.)
| | - Michael Klaas
- Chair of Fluid Mechanics and Institute of Aerodynamics, RWTH Aachen University, 52062 Aachen, Germany; (P.D.); (M.K.); (W.S.)
| | - Wolfgang Schröder
- Chair of Fluid Mechanics and Institute of Aerodynamics, RWTH Aachen University, 52062 Aachen, Germany; (P.D.); (M.K.); (W.S.)
| | - Lothar Rink
- Institute of Immunology, RWTH Aachen University Hospital, 52074 Aachen, Germany;
| | - Alan J. Slusarenko
- Department of Plant Physiology, RWTH Aachen University, 52074 Aachen, Germany; (A.J.S.); (M.C.H.G.)
- GENAWIF e.V.—Society for Natural Compound and Active Ingredient Research, 52070 Aachen, Germany;
| | - Martin C. H. Gruhlke
- Department of Plant Physiology, RWTH Aachen University, 52074 Aachen, Germany; (A.J.S.); (M.C.H.G.)
- GENAWIF e.V.—Society for Natural Compound and Active Ingredient Research, 52070 Aachen, Germany;
- Institute of Applied Microbiology—iAMB, Aachener Biology and Biotechnology—ABBt, RWTH Aachen University, 52074 Aachen, Germany
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175
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Doubravská L, Htoutou Sedláková M, Fišerová K, Pudová V, Urbánek K, Petrželová J, Röderová M, Langová K, Mezerová K, Kučová P, Axmann K, Kolář M. Bacterial Resistance to Antibiotics and Clonal Spread in COVID-19-Positive Patients on a Tertiary Hospital Intensive Care Unit, Czech Republic. Antibiotics (Basel) 2022; 11:antibiotics11060783. [PMID: 35740188 PMCID: PMC9219711 DOI: 10.3390/antibiotics11060783] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 05/31/2022] [Accepted: 06/01/2022] [Indexed: 02/04/2023] Open
Abstract
This observational retrospective study aimed to analyze whether/how the spectrum of bacterial pathogens and their resistance to antibiotics changed during the worst part of the COVID-19 pandemic (1 November 2020 to 30 April 2021) among intensive care patients in University Hospital Olomouc, Czech Republic, as compared with the pre-pandemic period (1 November 2018 to 30 April 2019). A total of 789 clinically important bacterial isolates from 189 patients were cultured during the pre-COVID-19 period. The most frequent etiologic agents causing nosocomial infections were strains of Klebsiella pneumoniae (17%), Pseudomonas aeruginosa (11%), Escherichia coli (10%), coagulase-negative staphylococci (9%), Burkholderia multivorans (8%), Enterococcus faecium (6%), Enterococcus faecalis (5%), Proteus mirabilis (5%) and Staphylococcus aureus (5%). Over the comparable COVID-19 period, a total of 1500 bacterial isolates from 372 SARS-CoV-2-positive patients were assessed. While the percentage of etiological agents causing nosocomial infections increased in Enterococcus faecium (from 6% to 19%, p < 0.0001), Klebsiella variicola (from 1% to 6%, p = 0.0004) and Serratia marcescens (from 1% to 8%, p < 0.0001), there were significant decreases in Escherichia coli (from 10% to 3%, p < 0.0001), Proteus mirabilis (from 5% to 2%, p = 0.004) and Staphylococcus aureus (from 5% to 2%, p = 0.004). The study demonstrated that the changes in bacterial resistance to antibiotics are ambiguous. An increase in the frequency of ESBL-positive strains of some species (Serratia marcescens and Enterobacter cloacae) was confirmed; on the other hand, resistance decreased (Escherichia coli, Acinetobacter baumannii) or the proportion of resistant strains remained unchanged over both periods (Klebsiella pneumoniae, Enterococcus faecium). Changes in pathogen distribution and resistance were caused partly due to antibiotic selection pressure (cefotaxime consumption increased significantly in the COVID-19 period), but mainly due to clonal spread of identical bacterial isolates from patient to patient, which was confirmed by the pulse field gel electrophoresis methodology. In addition to the above shown results, the importance of infection prevention and control in healthcare facilities is discussed, not only for dealing with SARS-CoV-2 but also for limiting the spread of bacteria.
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Affiliation(s)
- Lenka Doubravská
- Department of Anesthesiology, Resuscitation and Intensive Care, University Hospital Olomouc, I. P. Pavlova 6, 779 00 Olomouc, Czech Republic; (L.D.); (K.A.)
| | - Miroslava Htoutou Sedláková
- Department of Microbiology, University Hospital Olomouc, I. P. Pavlova 6, 779 00 Olomouc, Czech Republic; (K.F.); (J.P.); (P.K.)
- Correspondence: ; Tel.: +420-585-639-511
| | - Kateřina Fišerová
- Department of Microbiology, University Hospital Olomouc, I. P. Pavlova 6, 779 00 Olomouc, Czech Republic; (K.F.); (J.P.); (P.K.)
| | - Vendula Pudová
- Department of Microbiology, Faculty of Medicine and Dentistry, Palacky University Olomouc, Hnevotinska 3, 779 00 Olomouc, Czech Republic; (V.P.); (M.R.); (K.M.); (M.K.)
| | - Karel Urbánek
- Department of Pharmacology, Faculty of Medicine and Dentistry, Palacky University Olomouc, Hnevotinska 3, 779 00 Olomouc, Czech Republic;
| | - Jana Petrželová
- Department of Microbiology, University Hospital Olomouc, I. P. Pavlova 6, 779 00 Olomouc, Czech Republic; (K.F.); (J.P.); (P.K.)
| | - Magdalena Röderová
- Department of Microbiology, Faculty of Medicine and Dentistry, Palacky University Olomouc, Hnevotinska 3, 779 00 Olomouc, Czech Republic; (V.P.); (M.R.); (K.M.); (M.K.)
| | - Kateřina Langová
- Department of Medical Biophysics, Faculty of Medicine and Dentistry, Palacky University Olomouc, Hnevotinska 3, 779 00 Olomouc, Czech Republic;
| | - Kristýna Mezerová
- Department of Microbiology, Faculty of Medicine and Dentistry, Palacky University Olomouc, Hnevotinska 3, 779 00 Olomouc, Czech Republic; (V.P.); (M.R.); (K.M.); (M.K.)
| | - Pavla Kučová
- Department of Microbiology, University Hospital Olomouc, I. P. Pavlova 6, 779 00 Olomouc, Czech Republic; (K.F.); (J.P.); (P.K.)
| | - Karel Axmann
- Department of Anesthesiology, Resuscitation and Intensive Care, University Hospital Olomouc, I. P. Pavlova 6, 779 00 Olomouc, Czech Republic; (L.D.); (K.A.)
| | - Milan Kolář
- Department of Microbiology, Faculty of Medicine and Dentistry, Palacky University Olomouc, Hnevotinska 3, 779 00 Olomouc, Czech Republic; (V.P.); (M.R.); (K.M.); (M.K.)
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176
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Mannathoko N, Mosepele M, Gross R, Smith RM, Alby K, Glaser L, Richard-Greenblatt M, Dumm R, Sharma A, Jaskowiak-Barr A, Cressman L, Sewawa K, Cowden L, Reesey E, Otukile D, Paganotti GM, Mokomane M, Lautenbach E. Colonization with extended-spectrum cephalosporin-resistant Enterobacterales (ESCrE) and carbapenem-resistant Enterobacterales (CRE) in healthcare and community settings in Botswana: an antibiotic resistance in communities and hospitals (ARCH) study. Int J Infect Dis 2022; 122:313-320. [PMID: 35688308 DOI: 10.1016/j.ijid.2022.06.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 05/09/2022] [Accepted: 06/03/2022] [Indexed: 10/18/2022] Open
Abstract
OBJECTIVES Although extended-spectrum cephalosporin-resistant Enterobacterales (ESCrE) and carbapenem-resistant Enterobacterales (CRE) are a global challenge, data on these organisms in low- and middle-income countries are limited. In this study, we sought to characterize colonization data critical for greater antibiotic resistance surveillance efforts. METHODS This study was conducted in three hospitals and six clinics in Botswana. We conducted ongoing surveillance of adult patients in hospitals and clinics and adults and children in the community. All participants underwent rectal swab sampling to identify ESCrE and CRE. RESULTS Enrollment occurred from January 15, 2020, to September 4, 2020, but paused from April 2, 2020, to May 21, 2020, because of a countrywide COVID-19 lockdown. Of 5088 individuals approached, 2469 (49%) participated. ESCrE colonization prevalence was 30.7% overall (43% for hospital participants, 31% for clinic participants, 24% for adult community participants, and 26% for child community participants) (P <0.001). A total of 42 (1.7%) participants were colonized with CRE. CRE colonization prevalence was 1.7% overall (6.8% for hospital participants, 0.7% for clinic participants, 0.2% for adult community participants, and 0.5% for child community participants) (P <0.001). ESCrE and CRE prevalence varied substantially across regions and was significantly higher prelockdown versus postlockdown. CONCLUSIONS ESCrE colonization was high in all settings in Botswana. CRE prevalence in hospitals was also considerable. Colonization prevalence varied by region and clinical setting and decreased after a countrywide lockdown.
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Affiliation(s)
| | | | - Robert Gross
- Division of Infectious Diseases, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA; Center for Clinical Epidemiology and Biostatistics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA; Department of Biostatistics, Epidemiology, and Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Rachel M Smith
- Centers for Disease Control and Prevention (CDC), Atlanta, GA, USA
| | - Kevin Alby
- Department of Pathology and Laboratory Medicine, University of North Carolina, Chapel Hill, NC, USA
| | - Laurel Glaser
- Department of Pathology and Laboratory Medicine, University Pennsylvania, Philadelphia, PA, USA
| | | | - Rebekah Dumm
- Department of Pathology and Laboratory Medicine, University Pennsylvania, Philadelphia, PA, USA
| | - Aditya Sharma
- Centers for Disease Control and Prevention (CDC), Atlanta, GA, USA
| | - Anne Jaskowiak-Barr
- Center for Clinical Epidemiology and Biostatistics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Leigh Cressman
- Center for Clinical Epidemiology and Biostatistics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | | | - Laura Cowden
- Center for Clinical Epidemiology and Biostatistics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Emily Reesey
- Center for Clinical Epidemiology and Biostatistics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Dimpho Otukile
- Botswana-University of Pennsylvania Partnership (BUP), Gaborone, Botswana
| | - Giacomo M Paganotti
- Division of Infectious Diseases, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA; University of Botswana, Gaborone, Botswana; Botswana-University of Pennsylvania Partnership (BUP), Gaborone, Botswana
| | | | - Ebbing Lautenbach
- Division of Infectious Diseases, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA; Center for Clinical Epidemiology and Biostatistics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA; Department of Biostatistics, Epidemiology, and Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
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177
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Benelli JL, Basso RP, Grafulha TW, Poester VR, Munhoz LS, Martins KB, Zogbi HE, Von Groll A, Severo CB, Stevens DA, Xavier MO. Fungal Bloodstream Co-infection by Trichosporon asahii in a COVID-19 Critical Patient: Case Report and Literature Review. Mycopathologia 2022; 187:397-404. [PMID: 35661958 PMCID: PMC9166219 DOI: 10.1007/s11046-022-00637-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 05/12/2022] [Indexed: 11/26/2022]
Abstract
Opportunistic infections are serious complications in critically ill COVID-19 patients, especially co-infections with bacterial and fungal agents. Here we report a rare case of bloodstream co-infection by Trichosporon asahii, an emerging yeast, and Acinetobacterbaumannii, an opportunistic nosocomial pathogen, both multidrug resistant, in a tertiary hospital from southern Brazil. A review of the literature regarding similar cases is also included. Treatment with multiple antimicrobials failed, and the patient progressed to death four days after the diagnosis of bacteremia and fungemia.
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Affiliation(s)
- Jéssica Louise Benelli
- Laboratory of Mycology, Faculty of Medicine, Federal University of Rio Grande, Rio Grande, Rio Grande Do Sul, 96200-400, Brazil
- Dr. Miguel Riet Correa University Hospital (HU-FURG/EBSERH), Rio Grande, Rio Grande Do Sul, 96200-190, Brazil
| | - Rossana Patrícia Basso
- Dr. Miguel Riet Correa University Hospital (HU-FURG/EBSERH), Rio Grande, Rio Grande Do Sul, 96200-190, Brazil
| | - Talita Werner Grafulha
- Dr. Miguel Riet Correa University Hospital (HU-FURG/EBSERH), Rio Grande, Rio Grande Do Sul, 96200-190, Brazil
| | - Vanice Rodrigues Poester
- Laboratory of Mycology, Faculty of Medicine, Federal University of Rio Grande, Rio Grande, Rio Grande Do Sul, 96200-400, Brazil
- Postgraduate Program in Health Sciences, Federal University of Rio Grande, Rio Grande, Rio Grande Do Sul, 96200-400, Brazil
| | - Lívia Silveira Munhoz
- Laboratory of Mycology, Faculty of Medicine, Federal University of Rio Grande, Rio Grande, Rio Grande Do Sul, 96200-400, Brazil
- Postgraduate Program in Health Sciences, Federal University of Rio Grande, Rio Grande, Rio Grande Do Sul, 96200-400, Brazil
| | - Katheryne Benine Martins
- Postgraduate Program in Health Sciences, Federal University of Rio Grande, Rio Grande, Rio Grande Do Sul, 96200-400, Brazil
- Medical Microbiology Research Nucleus - NUPEMM, Faculty of Medicine, Federal University of Rio Grande, Rio Grande, Rio Grande Do Sul, 96200-400, Brazil
| | - Heruza Einsfeld Zogbi
- Dr. Miguel Riet Correa University Hospital (HU-FURG/EBSERH), Rio Grande, Rio Grande Do Sul, 96200-190, Brazil
- Postgraduate Program in Health Sciences, Federal University of Rio Grande, Rio Grande, Rio Grande Do Sul, 96200-400, Brazil
- Medical Microbiology Research Nucleus - NUPEMM, Faculty of Medicine, Federal University of Rio Grande, Rio Grande, Rio Grande Do Sul, 96200-400, Brazil
| | - Andrea Von Groll
- Postgraduate Program in Health Sciences, Federal University of Rio Grande, Rio Grande, Rio Grande Do Sul, 96200-400, Brazil
- Medical Microbiology Research Nucleus - NUPEMM, Faculty of Medicine, Federal University of Rio Grande, Rio Grande, Rio Grande Do Sul, 96200-400, Brazil
| | - Cecília Bittencourt Severo
- Federal University of Health Sciences of Porto Alegre (UFCSPA), Porto Alegre, Rio Grande Do Sul, 90050-170, Brazil
- Hospital Complex Irmandade Santa Casa de Misericórdia de Porto Alegre, Porto Alegre, Rio Grande Do Sul, 90035-074, Brazil
| | - David A Stevens
- California Institute for Medical Research, San Jose, and Div. of Infectious Diseases and Geographic Medicine, Stanford Univ. Medical School, Stanford, CA, USA
| | - Melissa Orzechowski Xavier
- Laboratory of Mycology, Faculty of Medicine, Federal University of Rio Grande, Rio Grande, Rio Grande Do Sul, 96200-400, Brazil.
- Postgraduate Program in Health Sciences, Federal University of Rio Grande, Rio Grande, Rio Grande Do Sul, 96200-400, Brazil.
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178
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Bienvenu AL, Pavese P, Leboucher G, Berger P, Roux S, Charmillon A, Foroni L, Menotti J, Lebeaux D, Mayan R, Mondain V, Robin C, Lesprit P, Alfandari S, Kernéis S. Practical checklist for implementation of antifungal stewardship programmes. J Med Microbiol 2022; 71. [PMID: 35771615 DOI: 10.1099/jmm.0.001560] [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: 11/18/2022] Open
Abstract
Introduction. Antifungal stewardship programmes are needed in healthcare facilities to limit the overuse or misuse of antifungals, which are responsible for an increase in antifungal resistance.Hypothesis/Gap Statement. Core recommendations for antifungal stewardship were published by the Mycoses Study Group Education and Research Consortium, while the Centers for Disease Control and Prevention (CDC) provided a Core Elements of Hospital Antibiotic Stewardship Programs checklist. The recommendations offer global core elements for best practices in antifungal stewardship, but do not provide a framework for the implementation of antifungal stewardship programmes in healthcare facilities.Aim. In line with the recommendations, it is of the utmost importance to establish a practical checklist that may be used to implement antifungal stewardship programmes.Methodology. The practical checklist was established by a national consensus panel of experts involved in antifungal stewardship activities. A preliminary checklist was sent to all experts. The final document was approved by the panel after discussion and the resolution of any disagreements by consensus.Results. The final checklist includes the following items: leadership support; actions to support optimal antifungal use; actions to monitor antifungal prescribing, use and resistance; and an education programme.Conclusion. This antifungal stewardship checklist offers opportunities for antifungal resistance containment, given that antifungal stewardship activities promote the optimal use of antifungals.
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Affiliation(s)
- Anne-Lise Bienvenu
- Service Pharmacie, Groupement Hospitalier Nord, Hospices Civils de Lyon, Lyon, France.,Univ Lyon, Malaria Research Unit, SMITh, ICBMS UMR 5246, Lyon, France
| | - Patricia Pavese
- Service des Maladies Infectieuses, CHU de Grenoble, Grenoble, France
| | - Gilles Leboucher
- Service Pharmacie, Groupement Hospitalier Nord, Hospices Civils de Lyon, Lyon, France
| | - Pierre Berger
- Infectiologie, Institut Paoli Calmettes, Marseille, France
| | - Sandrine Roux
- Service des Maladies Infectieuses et Tropicales, Hospices Civils de Lyon, Lyon
| | | | - Luc Foroni
- Omédit, ARS Auvergne-Rhône-Alpes, Lyon, France
| | - Jean Menotti
- Service de Mycologie, Groupement Hospitalier Nord, Hospices Civils de Lyon, Lyon, France
| | - David Lebeaux
- Maladies Infectieuses et Tropicales, Hôpital Européen Georges-Pompidou, Paris, France
| | - Rémi Mayan
- Infectiologie, Ramsay Sante, Clinique Belharra, Bayonne, France
| | | | - Christine Robin
- Service d'hématologie clinique et de thérapie cellulaire, APHP, Hôpital Henri Mondor, Créteil, France
| | - Philippe Lesprit
- Service des Maladies Infectieuses, CHU de Grenoble, Grenoble, France
| | - Serge Alfandari
- Service de Réanimation et Maladies Infectieuses, CH Dron, Tourcoing, France
| | - Solen Kernéis
- Equipe de Prévention du Risque Infectieux, Hôpital Bichat, Paris, France
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179
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George S, Muhaj FF, Nguyen CD, Tyring SK. Part I Antimicrobial resistance: Bacterial pathogens of dermatologic significance and implications of rising resistance. J Am Acad Dermatol 2022; 86:1189-1204. [PMID: 35122894 PMCID: PMC8808428 DOI: 10.1016/j.jaad.2021.11.066] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 11/28/2021] [Accepted: 11/29/2021] [Indexed: 12/24/2022]
Abstract
Although the COVID-19 pandemic has been the defining global health crisis of our time, public health officials have been sounding the alarm of another ominous threat for years: an impending antimicrobial resistance crisis. In dermatology, antibiotics are often used for prolonged courses in the treatment of skin and soft tissue infections and common inflammatory skin conditions, increasing the risk of microbiome alteration and antibiotic-related adverse effects, all while exerting consequential selective pressures on both pathogenic and bystander bacteria. In this review, we hope to raise awareness of the crisis of antimicrobial resistance and review resistance concerns related to dermatology-relevant bacterial pathogens.
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Affiliation(s)
- Saira George
- Department of Dermatology, MD Anderson Cancer Center, Houston, Texas
| | - Fiorinda F Muhaj
- Department of Dermatology, MD Anderson Cancer Center, Houston, Texas; Department of Dermatology, University of Texas McGovern Medical School at Houston, Houston, Texas
| | | | - Stephen K Tyring
- Department of Dermatology, University of Texas McGovern Medical School at Houston, Houston, Texas; Center for Clinical Studies, Houston, Texas.
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La Vecchia A, Ippolito G, Taccani V, Gatti E, Bono P, Bettocchi S, Pinzani R, Tagliabue C, Bosis S, Marchisio P, Agostoni C. Epidemiology and antimicrobial susceptibility of Staphylococcus aureus in children in a tertiary care pediatric hospital in Milan, Italy, 2017-2021. Ital J Pediatr 2022; 48:67. [PMID: 35526042 PMCID: PMC9077633 DOI: 10.1186/s13052-022-01262-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Accepted: 04/22/2022] [Indexed: 12/24/2022] Open
Abstract
Background Methicillin-resistant Staphylococcus aureus (MRSA) is highly prevalent worldwide and can cause severe diseases. MRSA is associated with other antibiotic resistance. COVID-19 pandemic increased antimicrobial resistance in adult patients. Only a few data report the antimicrobial susceptibility of S. aureus in the Italian pediatric population, before and during the COVID-19 pandemic. Methods We included all the S. aureus positive samples with an available antibiogram isolated from pediatric patients (< 18 years old) in a tertiary care hospital in Milan, Italy, from January 2017 to December 2021. We collected data on demographics, antimicrobial susceptibility, and clinical history. We compared methicillin-susceptible Staphylococcus aureus (MSSA) and MRSA strains. We calculated the frequency of isolation by year. The incidence of isolates during 2020 was compared with the average year isolation frequency using the univariate Poisson test. We compared the proportion of MRSA isolates during 2020 to the average proportion of other years with the Chi-squared test. Results Our dataset included a total of 255 S. aureus isolated from 226 patients, 120 (53%) males, and 106 (47%) females, with a median age of 3.4 years (IQR 0.8 – 10.5). The mean isolation frequency per year was 51. We observed a significant decrease of isolations during 2020 (p = 0.02), but after adjusting for the total number of hospitalization per year there was no evidence that the incidence changed. Seventy-six (30%) S. aureus were MRSA. Twenty (26%) MRSA vs 23 (13%) MSSA (p = 0.02) were hospital-acquired. MRSA strains showed higher resistance to cotrimoxazole, clindamycin, macrolides, levofloxacin, gentamicin, and tetracyclin than MSSA strains. None of MRSA were resistant to linezolid and vancomycin, one was resistant to daptomycin. The proportion of MRSA did not change during the COVID-19 pandemic. The overall clindamycin resistance was high (17%). Recent antibiotic therapy was related to MRSA infection. Conclusion The proportion of MRSA did not change during the COVID-19 pandemic and remained high. Clindamycin should not be used as an empirical MRSA treatment due to its high resistance.
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Affiliation(s)
| | | | | | | | - Patrizia Bono
- Laboratory of Microbiology, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Silvia Bettocchi
- Pediatric Emergency Department, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.,De Marchi Foundation, Pediatric Area, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Raffaella Pinzani
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Pediatric Highly Intensive Care Unit, Milan, Italy
| | - Claudia Tagliabue
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Pediatric Highly Intensive Care Unit, Milan, Italy
| | - Samantha Bosis
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Pediatric Highly Intensive Care Unit, Milan, Italy
| | - Paola Marchisio
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Pediatric Highly Intensive Care Unit, Milan, Italy.,Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
| | - Carlo Agostoni
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Pediatric Intermediate Care Unit, via Francesco Sforza 9, 20122, Milan, Italy. .,Department of Clinical Sciences and Community Health (DISCCO), University of Milan, Milan, Italy.
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181
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Barman TK, Singh AK, Bonin JL, Nafiz TN, Salmon SL, Metzger DW. Lethal synergy between SARS-CoV-2 and Streptococcus pneumoniae in hACE2 mice and protective efficacy of vaccination. JCI Insight 2022; 7:159422. [PMID: 35482422 DOI: 10.1172/jci.insight.159422] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 04/26/2022] [Indexed: 11/17/2022] Open
Abstract
Secondary infections are frequent complications of viral respiratory infections but the potential consequence of SARS-CoV-2 co-infection with common pulmonary pathogens is poorly understood. We report that co-infection of human ACE2 transgenic mice with sublethal doses of SARS-CoV-2 and Streptococcus pneumoniae results in synergistic lung inflammation and lethality. Mortality was observed regardless of whether SARS-CoV-2 challenge occurred before or after establishment of sublethal pneumococcal infection. Increased bacterial levels following co-infection were associated with alveolar macrophage depletion and treatment with murine GM-CSF reduced lung bacteria numbers and pathology, and partially protected from death. However, therapeutic targeting of interferons, an approach that is effective against influenza co-infections, failed to increase survival. Combined vaccination against both SARS-CoV-2 and pneumococci resulted in 100% protection against subsequent co-infection. The results indicate that when seasonal respiratory infections return to pre-pandemic levels, they could lead to an increased incidence of lethal COVID-19 superinfections, especially among the unvaccinated population. .
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Affiliation(s)
- Tarani Kanta Barman
- Department of Immunology and Microbial Disease, Albany Medical College, Albany, United States of America
| | - Amit K Singh
- Department of Immunology and Microbial Disease, Albany Medical College, Albany, United States of America
| | - Jesse L Bonin
- Department of Immunology and Microbial Disease, Albany Medical College, Albany, United States of America
| | - Tanvir N Nafiz
- Department of Immunology and Microbial Disease, Albany Medical College, Albany, United States of America
| | - Sharon L Salmon
- Department of Immunology and Microbial Disease, Albany Medical College, Albany, United States of America
| | - Dennis W Metzger
- Department of Immunology and Microbial Disease, Albany Medical College, Albany, United States of America
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182
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Madrigal-Aguilar DA, Gonzalez-Silva A, Rosales-Acosta B, Bautista-Crescencio C, Ortiz-Álvarez J, Escalante CH, Sánchez-Navarrete J, Hernández-Rodríguez C, Chamorro-Cevallos G, Tamariz J, Villa-Tanaca L. Antifungal Activity of Fibrate-Based Compounds and Substituted Pyrroles That Inhibit the Enzyme 3-Hydroxy-methyl-glutaryl-CoA Reductase of Candida glabrata (CgHMGR), Thus Decreasing Yeast Viability and Ergosterol Synthesis. Microbiol Spectr 2022; 10:e0164221. [PMID: 35377226 PMCID: PMC9045318 DOI: 10.1128/spectrum.01642-21] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Accepted: 03/04/2022] [Indexed: 12/24/2022] Open
Abstract
Due to the emergence of multidrug-resistant strains of yeasts belonging to the Candida genus, there is an urgent need to discover antifungal agents directed at alternative molecular targets. The aim of the current study was to evaluate the capacity of three different series of synthetic compounds to inhibit the Candida glabrata enzyme denominated 3-hydroxy-methyl-glutaryl-CoA reductase and thus affect ergosterol synthesis and yeast viability. Compounds 1c (α-asarone-related) and 5b (with a pyrrolic core) were selected as the best antifungal candidates among over 20 synthetic compounds studied. Both inhibited the growth of fluconazole-resistant and fluconazole-susceptible C. glabrata strains. A yeast growth rescue experiment based on the addition of exogenous ergosterol showed that the compounds act by inhibiting the mevalonate synthesis pathway. A greater recovery of yeast growth occurred for the C. glabrata 43 fluconazole-resistant (versus fluconazole-susceptible) strain and after treatment with 1c (versus 5b). Given that the compounds decreased the concentration of ergosterol in the yeast strains, they probably target ergosterol synthesis. According to the docking analysis, the inhibitory effect of 1c and 5b could possibly be mediated by their interaction with the amino acid residues of the catalytic site of the enzyme. Since 1c displayed higher binding energy than α-asarone and 5b, it is the best candidate for further research, which should include structural modifications to increase its specificity and potency. The derivatives could then be examined with in vivo animal models using a therapeutic dose. IMPORTANCE Within the context of the COVID-19 pandemic, there is currently an epidemiological alert in health care services due to outbreaks of Candida auris, Candida glabrata, and other fungal species multiresistant to conventional antifungals. Therefore, it is important to propose alternative molecular targets, as well as new antifungals. The three series of synthetic compounds herein designed and synthesized are inhibitors of ergosterol synthesis in yeasts. Of the more than 20 compounds studied, two were selected as the best antifungal candidates. These compounds were able to inhibit the growth and synthesis of ergosterol in C. glabrata strains, whether susceptible or resistant to fluconazole. The rational design of antifungal compounds derived from clinical drugs (statins, fibrates, etc.) has many advantages. Future studies are needed to modify the structure of the two present test compounds to obtain safer and less toxic antifungals. Moreover, it is important to carry out a more in-depth mechanistic approach.
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Affiliation(s)
- Damián A. Madrigal-Aguilar
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City, Mexico
| | - Adilene Gonzalez-Silva
- Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City, Mexico
| | - Blanca Rosales-Acosta
- Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City, Mexico
| | - Celia Bautista-Crescencio
- Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City, Mexico
| | - Jossué Ortiz-Álvarez
- Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City, Mexico
| | - Carlos H. Escalante
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City, Mexico
| | | | - César Hernández-Rodríguez
- Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City, Mexico
| | - Germán Chamorro-Cevallos
- Departamento de Farmacia, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City, Mexico
| | - Joaquín Tamariz
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City, Mexico
| | - Lourdes Villa-Tanaca
- Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City, Mexico
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183
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Jeon K, Jeong S, Lee N, Park MJ, Song W, Kim HS, Kim HS, Kim JS. Impact of COVID-19 on Antimicrobial Consumption and Spread of Multidrug-Resistance in Bacterial Infections. Antibiotics (Basel) 2022; 11:antibiotics11040535. [PMID: 35453286 PMCID: PMC9025690 DOI: 10.3390/antibiotics11040535] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 04/13/2022] [Accepted: 04/15/2022] [Indexed: 02/06/2023] Open
Abstract
The spread of COVID-19 pandemic may have affected antibiotic consumption patterns and the prevalence of colonized or infected by multidrug-resistant (MDR) bacteria. We investigated the differences in the consumption of antibiotics easily prone to resistance and the prevalence of MDR bacteria during the COVID-19 pandemic (March 2020 to September 2021) compared to in the pre-pandemic period (March 2018 to September 2019). Data on usage of antibiotics and infections caused by methicillin-resistant Staphylococcus aureus (MRSA), vancomycin-resistant Enterococcus (VRE), carbapenem-resistant Enterobacteriaceae (CRE), carbapenem-resistant Acinetobacter baumannii (CRAB), and carbapenem-resistant Pseudomonas aeruginosa (CRPA) were obtained from hospitalized patients in four university hospitals. The consumption of penicillin with β-lactamase inhibitors (3.4% in ward, 5.8% in intensive care unit (ICU)), and carbapenems (25.9% in ward, 12.1% in ICU) increased during the pandemic period. The prevalence of MRSA (4.7%), VRE (49.0%), CRE (22.4%), and CRPA (20.1%) isolated in clinical samples from the ward and VRE (26.7%) and CRE (36.4%) isolated in clinical samples from the ICU were significantly increased, respectively. Meanwhile, only the prevalence of CRE (38.7%) isolated in surveillance samples from the ward increased. The COVID-19 pandemic is associated with increased consumption of antibiotics and has influenced the prevalence of infections caused by MDR isolates.
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Affiliation(s)
- Kibum Jeon
- Department of Laboratory Medicine, Hallym University Hangang Sacred Heart Hospital, Seoul 07247, Korea;
| | - Seri Jeong
- Department of Laboratory Medicine, Hallym University Kangnam Sacred Heart Hospital, Seoul 07442, Korea; (N.L.); (M.-J.P.); (W.S.)
- Correspondence:
| | - Nuri Lee
- Department of Laboratory Medicine, Hallym University Kangnam Sacred Heart Hospital, Seoul 07442, Korea; (N.L.); (M.-J.P.); (W.S.)
| | - Min-Jeong Park
- Department of Laboratory Medicine, Hallym University Kangnam Sacred Heart Hospital, Seoul 07442, Korea; (N.L.); (M.-J.P.); (W.S.)
| | - Wonkeun Song
- Department of Laboratory Medicine, Hallym University Kangnam Sacred Heart Hospital, Seoul 07442, Korea; (N.L.); (M.-J.P.); (W.S.)
| | - Han-Sung Kim
- Department of Laboratory Medicine, Hallym University Sacred Heart Hospital, Anyang 14068, Korea;
| | - Hyun Soo Kim
- Department of Laboratory Medicine, Hallym University Dongtan Sacred Heart Hospital, Hwaseong 18450, Korea;
| | - Jae-Seok Kim
- Department of Laboratory Medicine, Kangdong Sacred Heart Hospital, Seoul 05355, Korea;
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184
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Zhao H, Wang S, Meng R, Liu G, Hu J, Zhang H, Yan S, Zhan S. Appropriateness of Antibiotic Prescriptions in Chinese Primary Health Care and the Impact of the COVID-19 Pandemic: A Typically Descriptive and Longitudinal Database Study in Yinchuan City. Front Pharmacol 2022; 13:861782. [PMID: 35496308 PMCID: PMC9049214 DOI: 10.3389/fphar.2022.861782] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 03/11/2022] [Indexed: 12/24/2022] Open
Abstract
Background: The appropriateness of antibiotic prescriptions in primary care has not been well evaluated in China in recent years. Furthermore, the impact of coronavirus disease 2019 (COVID-19) on antibiotic prescriptions has not yet been investigated in China. We aimed to assess the appropriateness of antibiotic prescriptions and to evaluate the potential association between the COVID-19 pandemic and antibiotic prescriptions in primary care settings of Yinchuan, a city in China. Methods: This study included 155 primary care institutions and 10,192,713 outpatient visits. Outpatient prescriptions were classified as appropriate, potentially appropriate, inappropriate, or not linked to any diagnosis for antibiotic use following a validated evaluation scheme. Interrupted time-series analyses were performed to assess the effects of the COVID-19 pandemic on antibiotic prescriptions in Chinese primary care facilities. Results: During the study period, 1,287,678 (12.6%, 95% confidence interval [12.6–12.7]) of 10,192,713 outpatient visits in primary care resulted in antibiotic prescriptions. Among 1,287,678 antibiotic prescriptions, 653,335 (50.7% [50.6–50.9]) were inappropriate, 463,081 (36.0% [35.8–36.1]) were potentially appropriate, 171,056 (13.3% [13.1–13.5]) were appropriate, and 206 could not be linked to any diagnosis. Furthermore, patient, physician, and institutional factors were associated with inappropriate antibiotic prescriptions; there was an overall decreasing trend in the proportions of inappropriate antibiotic prescriptions, with the highest level in 2017 (67.1% [66.8–67.5]) and the lowest in 2021 (40.8% [40.3–41.3]). A total of 1,416,120 individual antibiotics were prescribed, of which 1,087,630 (76.8%) were broad-spectrum and 777,672 (54.9%) were classified in the World Health Organization’s “Watch” category. In addition, the COVID-19 pandemic was associated with changes of −2.8% (−4.4 to −1.3) in the level and 0.3% (0.2–0.3) in the monthly trend of antibiotic prescription rates, as well as changes of −5.9% (−10.2 to −1.5) in the level and 1.3% (1.0–1.6) in the monthly trend of the proportions of inappropriate antibiotic prescriptions. Conclusion: More than half of the antibiotic prescriptions were inappropriate during the study period in primary care in Yinchuan. The COVID-19 pandemic may be associated with a decrease in the overall and inappropriate use of antibiotics in primary care settings in China.
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Affiliation(s)
- Houyu Zhao
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China
| | - Shengfeng Wang
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China
- *Correspondence: Siyan Zhan, ; Shengfeng Wang, ; Ruogu Meng,
| | - Ruogu Meng
- National Institute of Health Data Science, Peking University, Beijing, China
- *Correspondence: Siyan Zhan, ; Shengfeng Wang, ; Ruogu Meng,
| | - Guozhen Liu
- Peking University Health Information Technology, Beijing, China
| | - Jing Hu
- Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing Institute of Traditional Chinese Medicine, Beijing, China
| | - Huina Zhang
- Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing Institute of Traditional Chinese Medicine, Beijing, China
| | - Shaohua Yan
- Department of Oncology, Dongfang Hospital Beijing University of Chinese Medicine, Beijing, China
| | - Siyan Zhan
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China
- Research Center of Clinical Epidemiology, Peking University Third Hospital, Beijing, China
- Center for Intelligent Public Health, Institute for Artificial Intelligence, Peking University, Beijing, China
- *Correspondence: Siyan Zhan, ; Shengfeng Wang, ; Ruogu Meng,
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185
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Choi MH, Lee J, Seo YJ. Dual-site ligation-assisted loop-mediated isothermal amplification (dLig-LAMP) for colorimetric and point-of-care determination of real SARS-CoV-2. Mikrochim Acta 2022; 189:176. [PMID: 35381892 PMCID: PMC8982663 DOI: 10.1007/s00604-022-05293-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Accepted: 03/21/2022] [Indexed: 12/24/2022]
Abstract
A probing system has been developed based on dual-site ligation-assisted loop-mediated isothermal amplification (dLig-LAMP) for the selective colorimetric detection of SARS-CoV-2. This approach can induce false-positive and -negative detection in real clinical samples; dLig-LAMP operates with improved selectivity. Unlike RT-LAMP, the selectivity of dLig-LAMP is determined in both the ligation and primer binding steps, not in the reverse transcription step. With this selective system in hand, we developed a colorimetric signaling system for point-of-care detection. We also developed a colorimetric probe for sensing pyrophosphate, which arises as a side product during the LAMP DNA amplification. Thus, dLig-LAMP appears to be an alternative method for improving the selectivity problems associated with reverse transcription. In addition, combining dLig-LAMP with colorimetric pyrophosphate probing allows point-of-care detection of SARS-CoV-2 within 1 h with high selectivity.
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Affiliation(s)
- Moon Hyeok Choi
- Department of Chemistry, Jeonbuk National University, Jeonju, 54896, South Korea
| | - Jaehyeon Lee
- Department of Laboratory Medicine, Jeonbuk National University Medical School and Hospital, Jeonju, 54896, South Korea
| | - Young Jun Seo
- Department of Chemistry, Jeonbuk National University, Jeonju, 54896, South Korea.
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Outbreak of MRSA in a Gynecology/Obstetrics Department during the COVID-19 Pandemic: A Cautionary Tale. Microorganisms 2022; 10:microorganisms10040689. [PMID: 35456740 PMCID: PMC9024722 DOI: 10.3390/microorganisms10040689] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 03/14/2022] [Accepted: 03/22/2022] [Indexed: 02/04/2023] Open
Abstract
Since March 2020, the COVID-19 pandemic forced hospitals worldwide to intensify their infection control measures to prevent health care-associated transmission of SARS-CoV-2. The correct use of personal protective equipment, especially the application of masks, was quickly identified as priority to reduce transmission with this pathogen. Here, we report a nosocomial cluster of methicillin-resistant Staphylococcus aureus (MRSA) that occurred during the COVID-19 pandemic in a gynecology/obstetrics department, despite these intensified contact precautions. Five MRSA originating from clinical samples after surgical intervention led to an outbreak investigation. Firstly, this included environmental sampling of the operation theatre (OT) and, secondly, a point prevalence screening of patients and health care workers (HCW). All detected MRSA were subjected to whole genome sequencing (WGS) and isolate relatedness was determined using core genome multilocus sequence typing (cgMLST). WGS revealed one MRSA cluster with genetically closely related five patient and two HCW isolates differing in a single cgMLST allele at maximum. The outbreak was terminated after implementation of infection control bundle strategies. Although contact precaution measures, which are also part of MRSA prevention bundle strategies, were intensified during the COVID-19 pandemic, this MRSA outbreak could take place. This illustrates the importance of adherence to classical infection prevention strategies.
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187
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Knowledge and Practice of Antibiotic Management and Prudent Prescribing among Polish Medical Doctors. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19063739. [PMID: 35329427 PMCID: PMC8954040 DOI: 10.3390/ijerph19063739] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Revised: 03/11/2022] [Accepted: 03/18/2022] [Indexed: 12/24/2022]
Abstract
Antimicrobial resistance (AMR) is an urgent public health issue. The role of medical doctors in proper antibiotic use is crucial. The aim of this study was to evaluate the knowledge and practices of Polish doctors of antimicrobial prescribing and antibiotic resistance. The study group consisted of 504 medical doctors with an average age 32.8 ± 5.9 years, mostly women (65%). The paper questionnaire was developed on the basis of a survey tool developed by the European Centre for Disease Prevention and Control (ECDC) and Public Health England (PHE). According to our study, physicians were aware that: taking antibiotics has side effects, antibiotics cannot be used against viruses, unnecessary use of antibiotics leads to AMR and that healthy people can carry resistant bacteria (each item ≥98% correct responses). Only 47% of respondents knew that the use of antibiotics as growth stimulants in livestock is illegal in the EU. Of the respondents, 98.61% saw the connection between prescribing antibiotics and AMR. However, 65.28% of the respondents reported a lack of appropriate materials on AMR counseling. Nearly 92.5% of participants “never” or “rarely” gave out resources on prudent antibiotic use. Physicians in Poland underestimate the role of hand hygiene in stimulating antibiotic resistance (ABR) (74.4%), while demonstrating satisfying knowledge about antimicrobial use, the clinical application of antimicrobial guidelines and prevention of ABR. However, educational interventions are needed to help lead challenging communication with assertive patients. Appropriate patient resources would be helpful in reaching this goal.
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188
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Boles JE, Williams GT, Allen N, White LJ, Hilton KLF, Popoola PIA, Mulvihill DP, Hiscock JR. Anionic self‐assembling supramolecular enhancers of antimicrobial efficacy against Gram‐negative bacteria. ADVANCED THERAPEUTICS 2022. [DOI: 10.1002/adtp.202200024] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jessica E. Boles
- School of Chemistry and Forensics University of Kent Canterbury Kent CT2 7NH UK
- School of Biosciences University of Kent Canterbury Kent CT2 7NJ UK
| | - George T. Williams
- School of Chemistry University of Birmingham Edgbaston Birmingham B15 2TT UK
| | - Nyasha Allen
- School of Biosciences University of Kent Canterbury Kent CT2 7NJ UK
| | - Lisa J. White
- School of Chemistry and Forensics University of Kent Canterbury Kent CT2 7NH UK
| | - Kira L. F. Hilton
- School of Chemistry and Forensics University of Kent Canterbury Kent CT2 7NH UK
| | | | | | - Jennifer R. Hiscock
- School of Chemistry and Forensics University of Kent Canterbury Kent CT2 7NH UK
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Berndsen R, Cunningham T, Kaelin L, Callender M, Boldog WD, Viering B, King A, Labban N, Pollock JA, Miller HB, Blackledge MS. Identification and Evaluation of Brominated Carbazoles as a Novel Antibiotic Adjuvant Scaffold in MRSA. ACS Med Chem Lett 2022; 13:483-491. [PMID: 35295086 PMCID: PMC8919279 DOI: 10.1021/acsmedchemlett.1c00680] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 02/02/2022] [Indexed: 12/23/2022] Open
Abstract
![]()
Antibiotic-resistant
infections are a pressing global concern,
causing millions of deaths each year. Methicillin-resistant Staphylococcus aureus (MRSA) is a leading cause of nosocomial
infections in healthcare settings and is increasingly responsible
for community-acquired infections that are often more difficult to
treat. Antibiotic adjuvants are small molecules that potentiate antibiotics
through nontoxic mechanisms and show excellent promise as novel therapeutics.
Screening of low-molecular-weight compounds was employed to identify
novel antibiotic adjuvant scaffolds for further elaboration. Brominated
carbazoles emerged from this screening as lead compounds for further
evaluation. Lead carbazoles were able to potentiate several β-lactam
antibiotics in three medically relevant strains of MRSA. Gene expression
studies determined that these carbazoles were dampening the transcription
of key genes that modulate β-lactam resistance in MRSA. The
lead brominated carbazoles represent novel scaffolds for elaboration
as antibiotic adjuvants.
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Affiliation(s)
- Rachel Berndsen
- Department of Chemistry, High Point University, High Point, North Carolina 27268, United States
| | - Taylor Cunningham
- Department of Chemistry, High Point University, High Point, North Carolina 27268, United States
| | - Lauren Kaelin
- Department of Chemistry, High Point University, High Point, North Carolina 27268, United States
| | - Makayla Callender
- Department of Chemistry, University of Richmond, Richmond, Virginia 23173, United States
| | - W. Dexter Boldog
- Department of Chemistry, High Point University, High Point, North Carolina 27268, United States
| | - Brianna Viering
- Department of Chemistry, High Point University, High Point, North Carolina 27268, United States
| | - Ashley King
- Department of Chemistry, High Point University, High Point, North Carolina 27268, United States
| | - Najwa Labban
- Department of Chemistry, University of Richmond, Richmond, Virginia 23173, United States
| | - Julie A. Pollock
- Department of Chemistry, University of Richmond, Richmond, Virginia 23173, United States
| | - Heather B. Miller
- Department of Chemistry, High Point University, High Point, North Carolina 27268, United States
| | - Meghan S. Blackledge
- Department of Chemistry, High Point University, High Point, North Carolina 27268, United States
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190
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Does the COVID Pandemic Modify the Antibiotic Resistance of Uropathogens in Female Patients? A New Storm? Antibiotics (Basel) 2022; 11:antibiotics11030376. [PMID: 35326839 PMCID: PMC8944623 DOI: 10.3390/antibiotics11030376] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 03/06/2022] [Accepted: 03/08/2022] [Indexed: 12/24/2022] Open
Abstract
Urinary tract infections (UTIs) represent a common pathology among female patients, leading to overprescribing antibiotics, globally. The emergence of the COVID-19 pandemic has dramatically increased the incidence of this particular viral pneumonia with secondary bacterial superinfection, resulting in continuous therapeutic or prophylactic recommendations of antibiotic treatment; thus, an updated analysis of current antimicrobial resistance among uropathogens is mandatory. This cross-sectional retrospective study conducted in two university hospitals in Bucharest, Romania analyzed 2469 positive urine cultures, among two different periods of 6 months, before and during the COVID-19 pandemic. The most common pathogen was Escherichia coli 1505 (60.95%), followed by Klebsiella spp. 426 (17.25%). Enterococcus spp. was the leading Gram-positive pathogen 285 (11.54%). In gram negative bacteria, in almost all cases, an increased in resistance was observed, but the highest increase was represented by quinolones in Klebsiella spp., from 16.87% to 35.51% and Pseudomonas from 30.3% to 77.41%; a significant increase in resistance was also observed for carbapenems. Surprisingly, a decrease in resistance to Penicillin was observed in Enterococcus spp., but the overall tendency of increased resistance is also maintained for gram positive pathogens. The lack of data on the influence of the COVID-19 pandemic on uropathogens’ resistance promotes these findings as important for every clinician treating UTIs and for every specialist in the medical field in promoting reasonable recommendations of antibiotic therapies.
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Genomic Characterization of Clinical Acinetobacter baumannii Isolates Obtained from COVID-19 Patients in Russia. Antibiotics (Basel) 2022; 11:antibiotics11030346. [PMID: 35326809 PMCID: PMC8944674 DOI: 10.3390/antibiotics11030346] [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: 02/17/2022] [Revised: 02/22/2022] [Accepted: 03/03/2022] [Indexed: 11/18/2022] Open
Abstract
The coronavirus disease 2019 (COVID-19) pandemic has already affected all realms of public healthcare and, in particular, has led to increasing use of various antibiotics to treat possible bacterial coinfections even in cases for which such infections were not confirmed clinically. This could lead to an increase in the fraction and severity of multidrug-resistant bacterial isolates in healthcare facilities, especially in intensive care units (ICU). However, detailed epidemiological investigations, possibly including whole genome sequencing (WGS), are required to confirm the increase in antibiotic resistance and changes, if any, in the population and clonal structures of bacterial pathogens. In this study, we performed a comprehensive genomic and phenotypic characterization of selected multidrug-resistant A. baumannii isolates obtained from the patients of a dedicated COVID-19 ICU in Moscow, Russia. Hybrid short- and long-read sequencing allowed us to obtain complete profiles of genomic antimicrobial resistance and virulence determinants, as well as to reveal the plasmid structure. We demonstrated the genomic similarity in terms of cgMLST profiles of the isolates studied with a clone previously identified in the same facility. We believe that the data provided will contribute to better understanding the changes imposed by the COVID-19 pandemic on the population structure and the antimicrobial resistance of bacterial pathogens in healthcare facilities.
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Boostrom I, Portal EAR, Spiller OB, Walsh TR, Sands K. Comparing Long-Read Assemblers to Explore the Potential of a Sustainable Low-Cost, Low-Infrastructure Approach to Sequence Antimicrobial Resistant Bacteria With Oxford Nanopore Sequencing. Front Microbiol 2022; 13:796465. [PMID: 35308384 PMCID: PMC8928191 DOI: 10.3389/fmicb.2022.796465] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Accepted: 01/26/2022] [Indexed: 12/24/2022] Open
Abstract
Long-read sequencing (LRS) can resolve repetitive regions, a limitation of short read (SR) data. Reduced cost and instrument size has led to a steady increase in LRS across diagnostics and research. Here, we re-basecalled FAST5 data sequenced between 2018 and 2021 and analyzed the data in relation to gDNA across a large dataset (n = 200) spanning a wide GC content (25-67%). We examined whether re-basecalled data would improve the hybrid assembly, and, for a smaller cohort, compared long read (LR) assemblies in the context of antimicrobial resistance (AMR) genes and mobile genetic elements. We included a cost analysis when comparing SR and LR instruments. We compared the R9 and R10 chemistries and reported not only a larger yield but increased read quality with R9 flow cells. There were often discrepancies with ARG presence/absence and/or variant detection in LR assemblies. Flye-based assemblies were generally efficient at detecting the presence of ARG on both the chromosome and plasmids. Raven performed more quickly but inconsistently recovered small plasmids, notably a ∼15-kb Col-like plasmid harboring bla KPC . Canu assemblies were the most fragmented, with genome sizes larger than expected. LR assemblies failed to consistently determine multiple copies of the same ARG as identified by the Unicycler reference. Even with improvements to ONT chemistry and basecalling, long-read assemblies can lead to misinterpretation of data. If LR data are currently being relied upon, it is necessary to perform multiple assemblies, although this is resource (computing) intensive and not yet readily available/useable.
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Affiliation(s)
- Ian Boostrom
- Division of Infection and Immunity, Department of Medical Microbiology, Cardiff University, Cardiff, United Kingdom
| | - Edward A. R. Portal
- Division of Infection and Immunity, Department of Medical Microbiology, Cardiff University, Cardiff, United Kingdom
| | - Owen B. Spiller
- Division of Infection and Immunity, Department of Medical Microbiology, Cardiff University, Cardiff, United Kingdom
| | - Timothy R. Walsh
- Division of Infection and Immunity, Department of Medical Microbiology, Cardiff University, Cardiff, United Kingdom
- Department of Zoology, Ineos Oxford Institute for Antimicrobial Research, University of Oxford, Oxford, United Kingdom
| | - Kirsty Sands
- Division of Infection and Immunity, Department of Medical Microbiology, Cardiff University, Cardiff, United Kingdom
- Department of Zoology, Ineos Oxford Institute for Antimicrobial Research, University of Oxford, Oxford, United Kingdom
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WHO Critical Priority Escherichia coli as One Health Challenge for a Post-Pandemic Scenario: Genomic Surveillance and Analysis of Current Trends in Brazil. Microbiol Spectr 2022; 10:e0125621. [PMID: 35234515 PMCID: PMC8941879 DOI: 10.1128/spectrum.01256-21] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The dissemination of carbapenem-resistant and third generation cephalosporin-resistant pathogens is a critical issue that is no longer restricted to hospital settings. The rapid spread of critical priority pathogens in Brazil is notably worrying, considering its continental dimension, the diversity of international trade, livestock production, and human travel. We conducted a nationwide genomic investigation under a One Health perspective that included Escherichia coli strains isolated from humans and nonhuman sources, over 45 years (1974–2019). One hundred sixty-seven genomes were analyzed extracting clinically relevant information (i.e., resistome, virulome, mobilome, sequence types [STs], and phylogenomic). The endemic status of extended-spectrum β-lactamase (ESBL)-positive strains carrying a wide diversity of blaCTX-M variants, and the growing number of colistin-resistant isolates carrying mcr-type genes was associated with the successful expansion of international ST10, ST38, ST115, ST131, ST354, ST410, ST648, ST517, and ST711 clones; phylogenetically related and shared between human and nonhuman hosts, and polluted aquatic environments. Otherwise, carbapenem-resistant ST48, ST90, ST155, ST167, ST224, ST349, ST457, ST648, ST707, ST744, ST774, and ST2509 clones from human host harbored blaKPC-2 and blaNDM-1 genes. A broad resistome to other clinically relevant antibiotics, hazardous heavy metals, disinfectants, and pesticides was further predicted. Wide virulome associated with invasion/adherence, exotoxin and siderophore production was related to phylogroup B2. The convergence of wide resistome and virulome has contributed to the persistence and rapid spread of international high-risk clones of critical priority E. coli at the human-animal-environmental interface, which must be considered a One Health challenge for a post-pandemic scenario. IMPORTANCE A One Health approach for antimicrobial resistance must integrate whole-genome sequencing surveillance data of critical priority pathogens from human, animal and environmental sources to track hot spots and routes of transmission and developing effective prevention and control strategies. As part of the Grand Challenges Explorations: New Approaches to Characterize the Global Burden of Antimicrobial Resistance Program, we present genomic data of WHO critical priority carbapenemase-resistant, ESBL-producing, and/or colistin-resistant Escherichia coli strains isolated from humans and nonhuman sources in Brazil, a country with continental proportions and high levels of antimicrobial resistance. The present study provided evidence of epidemiological and clinical interest, highlighting that the convergence of wide virulome and resistome has contributed to the persistence and rapid spread of international high-risk clones of E. coli at the human-animal-environmental interface, which must be considered a One Health threat that requires coordinated actions to reduce its incidence in humans and nonhuman hosts.
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The Natural Product Curcumin as an Antibacterial Agent: Current Achievements and Problems. Antioxidants (Basel) 2022; 11:antiox11030459. [PMID: 35326110 PMCID: PMC8944601 DOI: 10.3390/antiox11030459] [Citation(s) in RCA: 49] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 02/21/2022] [Accepted: 02/22/2022] [Indexed: 02/04/2023] Open
Abstract
The rapid spread of antibiotic resistance and lack of effective drugs for treating infections caused by multi-drug resistant bacteria in animal and human medicine have forced us to find new antibacterial strategies. Natural products have served as powerful therapeutics against bacterial infection and are still an important source for the discovery of novel antibacterial drugs. Curcumin, an important constituent of turmeric, is considered safe for oral consumption to treat bacterial infections. Many studies showed that curcumin exhibited antibacterial activities against Gram-negative and Gram-positive bacteria. The antibacterial action of curcumin involves the disruption of the bacterial membrane, inhibition of the production of bacterial virulence factors and biofilm formation, and the induction of oxidative stress. These characteristics also contribute to explain how curcumin acts a broad-spectrum antibacterial adjuvant, which was evidenced by the markedly additive or synergistical effects with various types of conventional antibiotics or non-antibiotic compounds. In this review, we summarize the antibacterial properties, underlying molecular mechanism of curcumin, and discuss its combination use, nano-formulations, safety, and current challenges towards development as an antibacterial agent. We hope that this review provides valuable insight, stimulates broader discussions, and spurs further developments around this promising natural product.
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Tang HJ, Lai CC, Chao CM. Changing Epidemiology of Respiratory Tract Infection during COVID-19 Pandemic. Antibiotics (Basel) 2022; 11:antibiotics11030315. [PMID: 35326778 PMCID: PMC8944752 DOI: 10.3390/antibiotics11030315] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Revised: 02/24/2022] [Accepted: 02/24/2022] [Indexed: 11/16/2022] Open
Abstract
The outbreak of COVID-19 has significantly changed the epidemiology of respiratory tract infection in several ways. The implementation of non-pharmaceutical interventions (NPIs) including universal masking, hand hygiene, and social distancing not only resulted in a decline in reported SARS-CoV-2 cases but also contributed to the decline in the non-COVID-19 respiratory tract infection-related hospital utilization. Moreover, it also led to the decreased incidence of previous commonly encountered respiratory pathogens, such as influenza and Streptococcus pneumoniae. Although antimicrobial agents are essential for treating patients with COVID-19 co-infection, the prescribing of antibiotics was significantly higher than the estimated prevalence of bacterial co-infection, which indicated the overuse of antibiotics or unnecessary antibiotic use during the COVID-19 pandemic. Furthermore, inappropriate antimicrobial exposure may drive the selection of drug-resistant microorganisms, and the disruption of infection control in COVID-19 setting measures may result in the spread of multidrug-resistant organisms (MDROs). In conclusion, NPIs could be effective in preventing respiratory tract infection and changing the microbiologic distribution of respiratory pathogens; however, we should continue with epidemiological surveillance to establish updated information, antimicrobial stewardship programs for appropriate use of antibiotic, and infection control prevention interventions to prevent the spread of MDROs during the COVID-19 pandemic.
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Affiliation(s)
- Hung-Jen Tang
- Department of Medicine, Chi Mei Medical Center, Tainan 71004, Taiwan;
| | - Chih-Cheng Lai
- Department of Internal Medicine, Kaohsiung Veterans General Hospital, Tainan Branch, Tainan 710, Taiwan;
| | - Chien-Ming Chao
- Department of Intensive Care Medicine, Chi Mei Medical Center, Liouying, Tainan 73657, Taiwan
- Correspondence:
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Evaluation of Bi-Lateral Co-Infections and Antibiotic Resistance Rates among COVID-19 Patients. Antibiotics (Basel) 2022; 11:antibiotics11020276. [PMID: 35203877 PMCID: PMC8868529 DOI: 10.3390/antibiotics11020276] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 02/12/2022] [Accepted: 02/17/2022] [Indexed: 12/20/2022] Open
Abstract
In addition to the pathogenesis of SARS-CoV-2, bacterial co-infection plays an essential role in the incidence and progression of SARS-CoV-2 infections by increasing the severity of infection, as well as increasing disease symptoms, death rate and antimicrobial resistance (AMR). The current study was conducted in a tertiary-care hospital in Lahore, Pakistan, among hospitalized COVID-19 patients to see the prevalence of bacterial co-infections and the AMR rates among different isolated bacteria. Clinical samples for the laboratory diagnosis were collected from 1165 hospitalized COVID-19 patients, of which 423 were found to be positive for various bacterial infections. Most of the isolated bacteria were Gram-negative rods (n = 366), followed by Gram-positive cocci (n = 57). A significant association (p < 0.05) was noted between the hospitalized COVID-19 patients and bacterial co-infections. Staphylococcus aureus (S. aureus) showed high resistance against tetracycline (61.7%), Streptococcus pyogenes against penicillin (100%), E. coli against Amp-clavulanic acid (88.72%), Klebsiella pneumoniae against ampicillin (100%), and Pseudomonas aeruginosa against ciprofloxacin (75.40%). Acinetobacter baumannii was 100% resistant to the majority of tested antibiotics. The prevalence of methicillin-resistant S. aureus (MRSA) was 14.7%. The topmost symptoms of >50% of COVID-19 patients were fever, fatigue, dyspnea and chest pain with a significant association (p < 0.05) in bacterial co-infected patients. The current study results showed a comparatively high prevalence of AMR, which may become a severe health-related issue in the future. Therefore, strict compliance of antibiotic usage and employment of antibiotic stewardship programs at every public or private institutional level are recommended.
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Chitungo I, Dzinamarira T, Nyazika TK, Herrera H, Musuka G, Murewanhema G. Inappropriate Antibiotic Use in Zimbabwe in the COVID-19 Era: A Perfect Recipe for Antimicrobial Resistance. Antibiotics (Basel) 2022; 11:antibiotics11020244. [PMID: 35203846 PMCID: PMC8868384 DOI: 10.3390/antibiotics11020244] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 02/07/2022] [Accepted: 02/10/2022] [Indexed: 02/08/2023] Open
Abstract
The global COVID-19 pandemic has resulted in an upsurge in antimicrobial use. The increase in use is multifactorial, and is particularly related to the empirical treatment of SARS-CoV-2 and suspected coinfections with antimicrobials and the limited quality of diagnostics to differentiate viral and bacterial pneumonia. The lack of clear clinical guidelines across a wide range of settings, and the inadequacy of public health sectors in many countries, have contributed to this pattern. The increased use of antimicrobials has the potential to increase incidences of antimicrobial resistance, especially in low-resource countries such as Zimbabwe already grappling with multidrug-resistant micro-organism strains. By adopting the antimicrobial stewardship principles of the correct prescription and optimised use of antimicrobials, as well as diagnostic stewardship, revamping regulatory oversight of antimicrobial surveillance may help limit the occurrence of antimicrobial resistance during this pandemic.
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Affiliation(s)
- Itai Chitungo
- Chemical Pathology Unit, Department of Medical Laboratory Sciences, Faculty of Medicine and Health Sciences, University of Zimbabwe, Harare, Zimbabwe;
| | - Tafadzwa Dzinamarira
- School of Health Systems & Public Health, University of Pretoria, Pretoria 0002, South Africa;
- ICAP at Columbia University, Harare, Zimbabwe
- Correspondence:
| | - Tinashe K. Nyazika
- Department of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool L3 5QA, UK;
| | - Helena Herrera
- School of Pharmacy and Biomedical Sciences, University of Portsmouth, Portsmouth PO1 2UP, UK;
| | - Godfrey Musuka
- School of Health Systems & Public Health, University of Pretoria, Pretoria 0002, South Africa;
| | - Grant Murewanhema
- Unit of Obstetrics and Gynaecology, Department of Primary Health Care Sciences, Faculty of Medicine and Health Sciences, University of Zimbabwe, Harare, Zimbabwe;
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Howard-Jones AR, Rifaath Anver S, Tsang K, Branley J. Invasive extended-spectrum beta-lactamase (ESBL) related infection rates are not influenced by international travel restrictions. Pathology 2022; 54:792-795. [PMID: 35168811 DOI: 10.1016/j.pathol.2021.11.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 10/29/2021] [Accepted: 11/03/2021] [Indexed: 10/19/2022]
Affiliation(s)
- Annaleise R Howard-Jones
- NSW Health Pathology-Nepean, Nepean Hospital, Kingswood, NSW, Australia; Faculty of Medicine and Health, University of Sydney, Camperdown, NSW, Australia
| | - Samiha Rifaath Anver
- Department of Infectious Diseases and Microbiology, Nepean Hospital, Kingswood, NSW, Australia
| | - Kirsten Tsang
- Department of Pharmacy, Nepean Hospital, Kingswood, NSW, Australia
| | - James Branley
- NSW Health Pathology-Nepean, Nepean Hospital, Kingswood, NSW, Australia; Faculty of Medicine and Health, University of Sydney, Camperdown, NSW, Australia; Department of Infectious Diseases and Microbiology, Nepean Hospital, Kingswood, NSW, Australia.
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199
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Chen W. Will the mRNA vaccine platform be the panacea for the development of vaccines against antimicrobial resistant (AMR) pathogens? Expert Rev Vaccines 2022; 21:155-157. [PMID: 34818960 DOI: 10.1080/14760584.2022.2011226] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Wangxue Chen
- Human Health Therapeutics Research Center (HHT), National Research Council Canada, Ottawa, Ontario, Canada
- Department of Biology, Brock University, St. Catharines, Ontario, Canada
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Haapanen M, Renko M, Artama M, Kuitunen I. Systemic antibiotics and asthma medicines dispensed to 0-12 year olds significantly decreased during the COVID-19 pandemic in 2020. Acta Paediatr 2022; 111:376-382. [PMID: 34626007 PMCID: PMC8652669 DOI: 10.1111/apa.16144] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 10/05/2021] [Accepted: 10/07/2021] [Indexed: 12/24/2022]
Abstract
Aim Nationwide lockdowns and social restrictions during the COVID‐19 pandemic have reduced childhood infections. We assessed how many items of systemic antibiotics and asthma medicines were dispensed to children aged 0−12 years in Finland before and during the pandemic and analysed the reimbursement costs. Methods The data came from the national Finnish register of reimbursable prescriptions, which is maintained by the country's Social Insurance Institution. It included all prescriptions for antibiotics and asthma medicines dispensed to children aged 0−12 years in 2019 and 2020. Prescription rates per 1000 children were calculated for each quarter and compared using rate ratios and 95% confidence intervals (95% CI). Results Overall dispensing for antibiotics decreased by 55.3% and was most prominent for macrolides for children aged 0−5 years (59.6%, 95% CI 60.9%−58.2%). Asthma medicines decreased by 19.8%, and the most prominent reduction was in short‐acting beta‐agonists for children aged 0−5 years (35.2%, 95% CI 36.1%−34.2%). These reduced reimbursement costs by 3.4 million Euros from 2019 to 2020. Conclusion This nationwide study showed that the number of antibiotics and asthma medicines decreased by 59.6% and 19.8% respectively from 2019 to 2020, generating a cost saving of 3.4 million Euros.
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Affiliation(s)
- Marjut Haapanen
- Department of Pediatrics Institute of Clinical Medicine University of Eastern Finland Kuopio Finland
| | - Marjo Renko
- Department of Pediatrics Institute of Clinical Medicine University of Eastern Finland Kuopio Finland
- Department of Pediatrics Kuopio University Hospital Kuopio Finland
- University of Oulu PEDEGO Research Unit Oulu Finland
| | - Miia Artama
- Faculty of Social Sciences Tampere University Tampere
- Finnish Institute of Health and Welfare Tampere
| | - Ilari Kuitunen
- Department of Pediatrics Institute of Clinical Medicine University of Eastern Finland Kuopio Finland
- Department of Pediatrics Mikkeli Central Hospital Mikkeli Finland
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