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Beadell B, Yamauchi J, Wong-Beringer A. Comparative in vitro efficacy of antibiotics against the intracellular reservoir of Staphylococcus aureus. J Antimicrob Chemother 2024:dkae241. [PMID: 39073778 DOI: 10.1093/jac/dkae241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Accepted: 06/26/2024] [Indexed: 07/30/2024] Open
Abstract
Staphylococcus aureus (SA) is a leading cause of bloodstream infection. The liver represents the sentinel immune organ for clearance of bloodstream pathogens and eradication of intracellular SA from liver-resident macrophages (Kupffer cells, KCs) eliminates the likely pathogenic reservoir that contributes to persistent bacteraemia. OBJECTIVES We assessed antimicrobial activity at phagolysosome-mimicking pH, intracellular penetration, and SA eradication within KCs in vitro for clinically prescribed antistaphylococcal agents alone or in combination: vancomycin, daptomycin, ceftaroline, ceftobiprole, oritavancin, oxacillin, cefazolin; rifampin and fosfomycin. METHODS pH-adjusted broth microdilution assays, intracellular bioaccumulation assays, and intracellular killing assays against clinical bloodstream isolates were performed using a murine KC line with study agents. RESULTS Rifampin and β-lactams exhibited enhanced activity [2- to 16-fold minimum inhibitory concentrations (MIC) decrease] at phagolysosomal pH while vancomycin, oritavancin, daptomycin and fosfomycin demonstrated reduced activity (2- to 32-fold MIC increase in order of least to greatest potency reduction). All agents evaluated had poor to modest intracellular to extracellular concentration ratios (0.024-7.8), with exceptions of rifampin and oritavancin (intracellular to extracellular ratios of 17.4 and 78.2, respectively). Finally, we showed that the first-line treatment for SA bacteraemia (SAB), vancomycin, performed worse than all other tested antibiotics in eradicating intracellular SA at human Cmax concentration (0.20 log cfu decrease), while oritavancin performed better than all other agents alone (2.05 versus 1.06-1.36 log cfu decrease). CONCLUSIONS Our findings raise concerns about the efficacy of commonly prescribed antibiotics against intracellular SA reservoirs and emphasize the need to consider targeting pathogen eradication from the liver to achieve early control of SAB.
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Affiliation(s)
- Brent Beadell
- Alfred E. Mann School of Pharmacy and Pharmaceutical Sciences, University of Southern California, Los Angeles, CA, USA
| | - Joe Yamauchi
- Alfred E. Mann School of Pharmacy and Pharmaceutical Sciences, University of Southern California, Los Angeles, CA, USA
| | - Annie Wong-Beringer
- Alfred E. Mann School of Pharmacy and Pharmaceutical Sciences, University of Southern California, Los Angeles, CA, USA
- Department of Pharmacy, Huntington Hospital, Pasadena, CA, USA
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2
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Nazli A, Tao W, You H, He X, He Y. Treatment of MRSA Infection: Where are We? Curr Med Chem 2024; 31:4425-4460. [PMID: 38310393 DOI: 10.2174/0109298673249381231130111352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Revised: 07/10/2023] [Accepted: 10/10/2023] [Indexed: 02/05/2024]
Abstract
Staphylococcus aureus is a leading cause of septicemia, endocarditis, pneumonia, skin and soft tissue infections, bone and joint infections, and hospital-acquired infections. In particular, methicillin-resistant Staphylococcus aureus (MRSA) is associated with high morbidity and mortality, and continues to be a major public health problem. The emergence of multidrug-resistant MRSA strains along with the wide consumption of antibiotics has made anti-MRSA treatment a huge challenge. Novel treatment strategies (e.g., novel antimicrobials and new administrations) against MRSA are urgently needed. In the past decade, pharmaceutical companies have invested more in the research and development (R&D) of new antimicrobials and strategies, spurred by favorable policies. All research articles were collected from authentic online databases, including Google Scholar, PubMed, Scopus, and Web of Science, by using different combinations of keywords, including 'anti-MRSA', 'antibiotic', 'antimicrobial', 'clinical trial', 'clinical phase', clinical studies', and 'pipeline'. The information extracted from articles was compared to information provided on the drug manufacturer's website and Clinical Trials.gov (https://clinicaltrials.gov/) to confirm the latest development phase of anti-MRSA agents. The present review focuses on the current development status of new anti-MRSA strategies concerning chemistry, pharmacological target(s), indications, route of administration, efficacy and safety, pharmacokinetics, and pharmacodynamics, and aims to discuss the challenges and opportunities in developing drugs for anti-MRSA infections.
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Affiliation(s)
- Adila Nazli
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, China
| | - Wenlan Tao
- Chongqing School, University of Chinese Academy of Sciences (UCAS Chongqing), Chongqing, 400714, China
| | - Hengyao You
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, China
| | - Xiaoli He
- Chongqing School, University of Chinese Academy of Sciences (UCAS Chongqing), Chongqing, 400714, China
| | - Yun He
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, China
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Abebe AA, Birhanu AG. Methicillin Resistant Staphylococcus aureus: Molecular Mechanisms Underlying Drug Resistance Development and Novel Strategies to Combat. Infect Drug Resist 2023; 16:7641-7662. [PMID: 38111667 PMCID: PMC10726795 DOI: 10.2147/idr.s428103] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Accepted: 11/29/2023] [Indexed: 12/20/2023] Open
Abstract
Antimicrobial resistance (AMR) represents a major threat to global health. Infection caused by Methicillin-resistant Staphylococcus aureus (MRSA) is one of the well-recognized global public health problem globally. In some regions, as many as 90% of S. aureus infections are reported to be MRSA, which cannot be treated with standard antibiotics. WHO reports indicated that MRSA is circulating in every province worldwide, significantly increasing the risk of death by 64% compared to drug-sensitive forms of the infection which is attributed to its antibiotic resistance. The emergence and spread of antibiotic-resistant MRSA strains have contributed to its increased prevalence in both healthcare and community settings. The resistance of S. aureus to methicillin is due to expression of penicillin-binding protein 2a (PBP2a), which renders it impervious to the action of β-lactam antibiotics including methicillin. The other is through the production of beta-lactamases. Although the treatment options for MRSA are limited, there are promising alternatives to antibiotics to combat the infections. Innovative therapeutic strategies with wide range of activity and modes of action are yet to be explored. The review highlights the global challenges posed by MRSA, elucidates the mechanisms underlying its resistance development, and explores mitigation strategies. Furthermore, it focuses on alternative therapies such as bacteriophages, immunotherapy, nanobiotics, and antimicrobial peptides, emphasizing their synergistic effects and efficacy against MRSA. By examining these alternative approaches, this review provides insights into the potential strategies for tackling MRSA infections and combatting the escalating threat of AMR. Ultimately, a multifaceted approach encompassing both conventional and novel interventions is imperative to mitigate the impact of MRSA and ensure a sustainable future for global healthcare.
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Affiliation(s)
- Assefa Asnakew Abebe
- Department of Molecular Biology, Institute of Biotechnology, Addis Ababa University, Addis Ababa, Ethiopia
- Department of Medical laboratory Sciences, Institute of Health, Bule Hora University, Bule Hora, Ethiopia
| | - Alemayehu Godana Birhanu
- Department of Molecular Biology, Institute of Biotechnology, Addis Ababa University, Addis Ababa, Ethiopia
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4
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Dotel R, Gilbert GL, Hutabarat SN, Davis JS, O'Sullivan MVN. Effectiveness of adjunctive rifampicin for treatment of Staphylococcus aureus bacteraemia: a systematic review and meta-analysis of randomized controlled trials. J Antimicrob Chemother 2023; 78:2419-2427. [PMID: 37583062 DOI: 10.1093/jac/dkad214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Accepted: 06/24/2023] [Indexed: 08/17/2023] Open
Abstract
OBJECTIVES To assess whether the addition of rifampicin to conventional treatment of Staphylococcus aureus bacteraemia (SAB) reduces bacteriological or clinical failure or death. DATA SOURCES PubMed, Embase and Cochrane CENTRAL databases were searched from inception to 31 December 2022. Reference lists and PubMed citations of eligible studies were checked. REVIEW METHODS Two study authors independently identified randomized controlled trials (RCTs) involving adult participants with SAB, in which an intervention group received adjunctive rifampicin and the control group received usual care with or without a placebo. Dichotomous data (bacteriological and clinical failure and deaths) were analysed and pooled across studies using risk ratio (RR) with 95% confidence intervals (CI) using a Mantel-Haenszel random-effect model. The key variable of interest being whether rifampicin was used. RESULTS Six RCTs including 894 participants-of which 758 (85%) were from one trial-met the inclusion criteria. The addition of rifampicin to conventional treatment of SAB significantly reduced bacteriological failure by 59% (RR 0.41, 95% CI 0.21-0.81, I2 = 0%, number need to treat 27). However, it did not reduce clinical failure (RR 0.70, 95% CI 0.47-1.03, I2 = 0%) or deaths (RR 0.96, 95% CI 0.70-1.32, I2 = 0%). Further, it did not reduce the duration of bacteraemia, or the length of hospital stay. Adjunctive rifampicin reduced SAB recurrences (1% versus 4%, P = 0.01). Emergence of rifampicin resistance during treatment was uncommon (<1%). CONCLUSION Although adjunctive rifampicin reduced the risk of bacteriological failure and recurrences, we found no mortality benefit to support its use in SAB.
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Affiliation(s)
- R Dotel
- Department of Infectious Diseases, Blacktown Hospital, Sydney, New South Wales, Australia
| | - G L Gilbert
- Sydney Institute for Infectious Diseases, The University of Sydney, Sydney, New South Wales, Australia
| | - S N Hutabarat
- Department of Microbiology and Infectious Diseases, Liverpool Hospital, Liverpool, New South Wales, Australia
| | - J S Davis
- Menzies School of Health Research, Charles Darwin University, Darwin, Australia
- John Hunter Hospital, University of Newcastle, Newcastle, Australia
| | - M V N O'Sullivan
- Sydney Institute for Infectious Diseases, The University of Sydney, Sydney, New South Wales, Australia
- Centre for Infectious Diseases and Microbiology Laboratory Services, New South Wales Health Pathology-Institute of Clinical Pathology and Medical Research, Westmead Hospital, Sydney, New South Wales, Australia
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Besal R, Adamič P, Beović B, Papst L. Systemic Antimicrobial Treatment of Chronic Osteomyelitis in Adults: A Narrative Review. Antibiotics (Basel) 2023; 12:944. [PMID: 37370263 DOI: 10.3390/antibiotics12060944] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Revised: 05/15/2023] [Accepted: 05/20/2023] [Indexed: 06/29/2023] Open
Abstract
Chronic osteomyelitis in adults is a complex condition that requires prolonged and intensive antimicrobial therapy, but evidence on optimal selection and duration of antibiotics is limited. A review of PubMed and Ovid Embase databases was conducted to identify systematic reviews, meta-analyses, retrospective and randomised controlled trials (RCTs) on antibiotic treatment outcomes in adults with chronic osteomyelitis. Three main areas of interest were investigated: short-term versus long-term antibiotic therapy, oral versus parenteral antibiotic therapy, and combination antibiotic therapy with rifampicin versus without rifampicin. A total of 36 articles were identified and findings were synthesised using a narrative review approach. The available literature suffers from limitations, including a lack of high-quality studies, inconsistent definitions, and varying inclusion/exclusion criteria among studies. Most studies are open-labelled and lack blinding. Limited high-quality evidence exists that oral therapy is non-inferior to parenteral therapy and that shorter antibiotic duration might be appropriate in low-risk patients. Studies on the impact of rifampicin are inconclusive. Further well-designed studies are needed to provide more robust evidence in these areas.
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Affiliation(s)
- Rok Besal
- Department of Infectious Diseases, University Medical Centre Ljubljana, 1000 Ljubljana, Slovenia
| | - Peter Adamič
- Department of Infectious Diseases, University Medical Centre Ljubljana, 1000 Ljubljana, Slovenia
| | - Bojana Beović
- Department of Infectious Diseases, University Medical Centre Ljubljana, 1000 Ljubljana, Slovenia
- Faculty of Medicine, University of Ljubljana, 1000 Ljubljana, Slovenia
| | - Lea Papst
- Department of Infectious Diseases, University Medical Centre Ljubljana, 1000 Ljubljana, Slovenia
- Faculty of Medicine, University of Ljubljana, 1000 Ljubljana, Slovenia
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Kang YR, Chung DR, Ko JH, Huh K, Cho SY, Kang CI, Peck KR. Comparing the Synergistic and Antagonistic Interactions of Ciprofloxacin and Levofloxacin Combined with Rifampin against Drug-Resistant Staphylococcus aureus: A Time-Kill Assay. Antibiotics (Basel) 2023; 12:antibiotics12040711. [PMID: 37107077 PMCID: PMC10135007 DOI: 10.3390/antibiotics12040711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 03/30/2023] [Accepted: 03/31/2023] [Indexed: 04/29/2023] Open
Abstract
BACKGROUND Treatment of device-related infections by drug-resistant Staphylococcus aureus can be challenging, and combination therapy has been proposed as a potential solution. We compared the effectiveness of levofloxacin-rifampin and ciprofloxacin-rifampin combinations in killing methicillin-resistant S. aureus (MRSA) using a time-kill assay. METHODS We randomly selected 15 vancomycin-susceptible S. aureus (VSSA) strains, 3 vancomycin-intermediate S. aureus (VISA) strains, and 12 heterogeneous VISA (hVISA) strains from the Asian Bacterial Bank. Time-kill experiments were performed in duplicate for each isolate. Viable bacterial counts were determined at 0 h, 4 h, 8 h, and 24 h for the ciprofloxacin- and levofloxacin-rifampin combinations at 1× MIC and 0.5× MIC. We compared synergistic and antagonistic interactions between the two combinations. RESULTS The viable bacterial count significantly decreased after 24 h of exposure to ciprofloxacin-rifampin and levofloxacin-rifampin combinations, with synergy observed more frequently in isolates exposed to ciprofloxacin-rifampin (43.3%) than levofloxacin-rifampin (20.0%) (p = 0.0082). The synergistic interactions of both combinations were more frequently observed in resistant strains with high MICs of ciprofloxacin (≥16 mg/L) and levofloxacin (≥8 mg/L). Levofloxacin tended to exhibit more frequent antagonistic interactions with rifampin than ciprofloxacin, although there was no statistical difference in antagonism between the two combinations. CONCLUSIONS Our study demonstrated that ciprofloxacin exhibits superior synergistic activity against MRSA strains, including VISA/hVISA, when combined with rifampin compared with levofloxacin. High MICs of fluoroquinolones were found to predict synergism. Our results suggest that ciprofloxacin may be a more effective choice than levofloxacin for combination therapy with rifampin in the treatment of MRSA infections.
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Affiliation(s)
- Yu Ri Kang
- Division of Infectious Diseases, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Republic of Korea
- Asia Pacific Foundation for Infectious Diseases (APFID), Seoul 06351, Republic of Korea
| | - Doo Ryeon Chung
- Division of Infectious Diseases, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Republic of Korea
- Asia Pacific Foundation for Infectious Diseases (APFID), Seoul 06351, Republic of Korea
- Center for Infection Prevention and Control, Samsung Medical Center, Seoul 06351, Republic of Korea
| | - Jae-Hoon Ko
- Division of Infectious Diseases, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Republic of Korea
| | - Kyungmin Huh
- Division of Infectious Diseases, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Republic of Korea
- Asia Pacific Foundation for Infectious Diseases (APFID), Seoul 06351, Republic of Korea
| | - Sun Young Cho
- Division of Infectious Diseases, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Republic of Korea
- Center for Infection Prevention and Control, Samsung Medical Center, Seoul 06351, Republic of Korea
| | - Cheol-In Kang
- Division of Infectious Diseases, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Republic of Korea
| | - Kyong Ran Peck
- Division of Infectious Diseases, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Republic of Korea
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El Hajj R, Stanzelova A, de Marcellus C, Kossorotoff M, Remangeon F, Roux CJ, Touzé R, Toubiana J, Benaboud S, Oualha M, Moulin F, Collignon C. Severe atypical Lemierre syndrome caused by methicillin-sensitive Staphylococcus aureus: Two pediatric case reports. Arch Pediatr 2023:S0929-693X(23)00037-4. [PMID: 36990936 DOI: 10.1016/j.arcped.2023.02.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 02/12/2023] [Indexed: 03/29/2023]
Abstract
BACKGROUND Lemierre syndrome is typically associated with ear, nose, and throat (ENT) infections caused by Fusobacterium necrophorum. Since 2002, cases of atypical Lemierre-like syndrome secondary to Staphylococcus aureus have been reported. CASES We report two pediatric cases of atypical Lemierre syndrome with a similar presentation: exophthalmia, absence of pharyngitis, metastatic lung infection, and intracranial venous sinus thrombosis. Both patients had a favorable outcome following treatment with antibiotics, anticoagulation, and corticosteroids. CONCLUSION Regular therapeutic monitoring of antibiotic levels helped to optimize antimicrobial treatment in both cases.
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Affiliation(s)
- R El Hajj
- Pediatrics, André Mignot Hospital, Versailles, France
| | - A Stanzelova
- Department of General Pediatrics and Pediatric Infectious Diseases, Necker-Enfants Malades University Hospital, Paris, France; Université de Paris Cité, Paris, France
| | - C de Marcellus
- Pediatric Intensive Care Unit, APHP University Hospital Necker-Enfants Malades, Paris, France
| | - M Kossorotoff
- Pediatric Neurology, APHP University Hospital Necker-Enfants Malades, Paris, France
| | - F Remangeon
- Université de Paris Cité, Paris, France; Pediatric Otorhinolaryngology Department, APHP, Hôpital Universitaire Necker-Enfants Malades, Paris, France
| | - C-J Roux
- Pediatric Radiology, APHP University Hospital Necker-Enfants Malades, Paris, France
| | - R Touzé
- Ophthalmology Department and Reference Center for Rare Ophthalmological Diseases (OPHTARA), AP-HP, University Hospital Necker-Enfants Malades, Paris, France; Université de Paris Cité, Paris, France
| | - J Toubiana
- Department of General Pediatrics and Pediatric Infectious Diseases, Necker-Enfants Malades University Hospital, Paris, France; Université de Paris Cité, Paris, France
| | - S Benaboud
- Pharmacology Department, Cochin Hospital, AP-HP Centre-Université de Paris, Paris, France
| | - M Oualha
- Université de Paris Cité, Paris, France; Pediatric Intensive Care Unit, APHP University Hospital Necker-Enfants Malades, Paris, France
| | - F Moulin
- Pediatric Intensive Care Unit, APHP University Hospital Necker-Enfants Malades, Paris, France
| | - C Collignon
- Pediatric Intensive Care Unit, APHP University Hospital Necker-Enfants Malades, Paris, France.
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Qodrati M, SeyedAlinaghi S, Dehghan Manshadi SA, Abdollahi A, Dadras O. Antimicrobial susceptibility testing of Staphylococcus aureus isolates from patients at a tertiary hospital in Tehran, Iran, 2018-2019. Eur J Med Res 2022; 27:152. [PMID: 35978369 PMCID: PMC9382727 DOI: 10.1186/s40001-022-00778-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Accepted: 08/01/2022] [Indexed: 01/04/2023] Open
Abstract
Background Staphylococcus aureus, a human skin and mucous membranes colonizer, could opportunistically cause a variety of infectious diseases. Frequently, it is resistant to methicillin (MRSA), and often, co-resistant to many clinically available antibiotics. MRSA is a major burden for healthcare systems and communities all over the world, especially in developing countries. We addressed the issue that more than a decade had passed since the last report about cumulative antibiogram for S. aureus from our center, whereas The Clinical and Laboratory Standards Institute (CLSI) recommends to analyze and report it on an annual basis in order to guide clinicians to select the best initial empiric antimicrobial therapy. Methods In a cross-sectional retrospective design, data of culture-proven S. aureus from clinical specimens of hospitalized patients at Imam Khomeini Hospital Complex, Tehran, Iran, were collected from September 2018 to September 2019. Antimicrobial susceptibility testing (AST) had been performed using either Kirby–Bauer disk diffusion or VITEK 2 automated system which is based on minimum inhibitory concentration (MIC). The Chi-squared test was used considering the critical p-value to be ≤ .05. Results Among 576 unique isolates, the overall prevalence of MRSA was 37.5%. Patients admitted to the infectious diseases ward and ICUs have a greater chance to have such an isolate. Methicillin resistance was predictive of resistance to most antibiotics: erythromycin (90.9%), clindamycin (85.4% including inducible resistance), gentamicin, cipro-/levo-/moxi-floxacin, trimethoprim–sulfamethoxazole (58.3%), tetracycline, and rifampin. Resistance rate of zero was observed for daptomycin, linezolid, tigecycline, and (roughly) vancomycin. The prevalence of multiple-drug resistant (MDR) isolates was 48.5%. Conclusions Although in this study, the prevalence of MRSA was lower than the previous ones from the same hospital, it is still far from the desired rates. Besides, resistance to clindamycin and trimethoprim–sulfamethoxazole were remarkable. So far, vancomycin is the best choice for empiric treatment of MRSA, with linezolid as the second choice. It is advised to avoid prescribing the newer antibacterial agents as long as the older ones are effective to prevent the emergence of MDR species.
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Affiliation(s)
- Mohammad Qodrati
- School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - SeyedAhmad SeyedAlinaghi
- Iranian Research Center for HIV/AIDS, Iranian Institute for Reduction of High-Risk Behaviors, Tehran University of Medical Sciences; Imam Khomeini Hospital Complex, Keshavarz Blvd., Tehran, 1419733141, Iran.
| | - Seyed Ali Dehghan Manshadi
- Iranian Research Center for HIV/AIDS, Iranian Institute for Reduction of High-Risk Behaviors, Tehran University of Medical Sciences; Imam Khomeini Hospital Complex, Keshavarz Blvd., Tehran, 1419733141, Iran. .,Department of Infectious Diseases and Tropical Medicine, Imam Khomeini Hospital Complex, Tehran University of Medical University, Tehran, Iran.
| | - Alireza Abdollahi
- Division of Pathology, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences Tehran, Tehran, Iran
| | - Omid Dadras
- Section Global Health and Rehabilitation, Western Norway University of Applied Sciences, Bergen, Norway
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Kuriakose J, Kaplansky M, Sierra CM. Myelosuppression Rates with Administration of Nafcillin with and without Rifampin in Pediatric Patients. Pediatr Rep 2022; 14:288-292. [PMID: 35736658 PMCID: PMC9230949 DOI: 10.3390/pediatric14020036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 06/01/2022] [Accepted: 06/06/2022] [Indexed: 01/27/2023] Open
Abstract
Myelosuppression, a potential adverse reaction of nafcillin and rifampin, is rarely documented in pediatric populations. The objective of this study is to describe the incidence of myelosuppression in pediatric patients receiving nafcillin or a combination of nafcillin and rifampin therapy. This retrospective chart review identified patients who received nafcillin alone or in combination with rifampin. The primary endpoint was the incidence of myelosuppression as a composite outcome. The secondary endpoints were the incidence of thrombocytopenia, anemia, and neutropenia individually. Of 199 patients in this study, 98 received nafcillin alone. There was no difference in the rates of myelosuppression between patients receiving nafcillin alone or in combination with rifampin (p = 0.0763), and the use of combination therapy did not affect the development of neutropenia (p = 0.2764) or thrombocytopenia (p = 0.1672). Patients receiving combination therapy were more likely to be anemic at the end of therapy (odds ratio [OR] = 2.333, 95% confidence interval [CI] 0.999, 5.446). Similarly, patients receiving longer durations of nafcillin were more likely to experience anemia (OR 1.774, 95% CI 1.382, 2.370) and neutropenia (OR 1.256, 95% CI 1.024, 1.540). The use of nafcillin does not significantly affect myelosuppression in pediatric patients, although longer durations of therapy may result in increased rates of neutropenia and anemia. Combination therapy with rifampin may result in increased rates of neutropenia.
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Affiliation(s)
| | | | - Caroline M. Sierra
- School of Pharmacy, Loma Linda University, Loma Linda, CA 92350, USA;
- Correspondence:
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Kirsch SH, Haeckl FPJ, Müller R. Beyond the approved: target sites and inhibitors of bacterial RNA polymerase from bacteria and fungi. Nat Prod Rep 2022; 39:1226-1263. [PMID: 35507039 DOI: 10.1039/d1np00067e] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Covering: 2016 to 2022RNA polymerase (RNAP) is the central enzyme in bacterial gene expression representing an attractive and validated target for antibiotics. Two well-known and clinically approved classes of natural product RNAP inhibitors are the rifamycins and the fidaxomycins. Rifampicin (Rif), a semi-synthetic derivative of rifamycin, plays a crucial role as a first line antibiotic in the treatment of tuberculosis and a broad range of bacterial infections. However, more and more pathogens such as Mycobacterium tuberculosis develop resistance, not only against Rif and other RNAP inhibitors. To overcome this problem, novel RNAP inhibitors exhibiting different target sites are urgently needed. This review includes recent developments published between 2016 and today. Particular focus is placed on novel findings concerning already known bacterial RNAP inhibitors, the characterization and development of new compounds isolated from bacteria and fungi, and providing brief insights into promising new synthetic compounds.
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Affiliation(s)
- Susanne H Kirsch
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI), Saarland University Campus, 66123 Saarbrücken, Germany. .,German Centre for Infection Research (DZIF), Partner Site Hannover-Braunschweig, 38124 Braunschweig, Germany
| | - F P Jake Haeckl
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI), Saarland University Campus, 66123 Saarbrücken, Germany. .,German Centre for Infection Research (DZIF), Partner Site Hannover-Braunschweig, 38124 Braunschweig, Germany
| | - Rolf Müller
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI), Saarland University Campus, 66123 Saarbrücken, Germany. .,German Centre for Infection Research (DZIF), Partner Site Hannover-Braunschweig, 38124 Braunschweig, Germany.,Department of Pharmacy, Saarland University, 66123 Saarbrücken, Germany
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11
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Grillo S, Puig-Asensio M, Schweizer ML, Cuervo G, Oriol I, Pujol M, Carratalà J. The Effectiveness of Combination Therapy for Treating Methicillin-Susceptible Staphylococcus aureus Bacteremia: A Systematic Literature Review and a Meta-Analysis. Microorganisms 2022; 10:microorganisms10050848. [PMID: 35630294 PMCID: PMC9145429 DOI: 10.3390/microorganisms10050848] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 04/10/2022] [Accepted: 04/16/2022] [Indexed: 02/06/2023] Open
Abstract
Background: This meta-analysis aims to evaluate the effectiveness of combination therapy for treating MSSA bacteremia. Methods: We searched Ovid MEDLINE, EMBASE, Cochrane CENTRAL, and clinicaltrials.gov for studies including adults with MSSA bacteremia. The monotherapy group used a first-line antibiotic active against MSSA and the combination group used a first-line antibiotic plus additional antibiotic/s. The primary outcome was all-cause mortality. Secondary outcomes included persistent bacteremia, duration of bacteremia, relapse, and adverse events. Random-effects models with inverse variance weighting were used to estimate pooled risk ratios (pRR). Heterogeneity was assessed using the I2 value and the Cochrane’s Q statistic. Results: A total of 12 studies (6 randomized controlled trials [RCTs]) were included. Combination therapy did not significantly reduce 30-day mortality (pRR 0.92, 95% CI, 0.70–1.20), 90-day mortality (pRR 0.89, 95% CI, 0.74–1.06), or any-time mortality (pRR 0.91, 95% CI, 0.76–1.08). Among patients with deep-seated infections, adjunctive rifampicin may reduce 90-day mortality (3 studies with moderate-high risk of bias; pRR 0.62, 95% CI, 0.42–0.92). For secondary outcomes, combination therapy decreased the risk of relapse (pRR 0.38, 95% CI, 0.22–0.66), but this benefit was not maintained when pooling RCTs (pRR 0.54, 95% CI, 0.12–2.51). Combination therapy was associated with an increased risk of adverse events (pRR 1.74, 95% CI, 1.31–2.31). Conclusions: Combination therapy not only did not decrease mortality in patients with MSSA bacteremia, but also increased the risk of adverse events. Combination therapy may reduce the risk of relapse, but additional high-quality studies are needed.
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Affiliation(s)
- Sara Grillo
- Department of Infectious Diseases, Bellvitge University Hospital, Bellvitge Institute for Biomedical Research (IDIBELL), Feixa Llarga s/n, 08907 L’Hospitalet de Llobregat, Spain; (S.G.); (G.C.); (M.P.); (J.C.)
| | - Mireia Puig-Asensio
- Department of Infectious Diseases, Bellvitge University Hospital, Bellvitge Institute for Biomedical Research (IDIBELL), Feixa Llarga s/n, 08907 L’Hospitalet de Llobregat, Spain; (S.G.); (G.C.); (M.P.); (J.C.)
- Centro de Investigación en Red de Enfermedades Infecciosas (CIBERINFEC; CB21/13/00009), Instituto de Salud Carlos III, 28029 Madrid, Spain
- Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, IA 52242, USA;
- Correspondence: ; Tel.: +34-932-602487; Fax: +34-932-607637
| | - Marin L. Schweizer
- Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, IA 52242, USA;
- Center for Access and Delivery Research and Evaluation, Iowa City VA Health Care System, Iowa City, IA 52246, USA
| | - Guillermo Cuervo
- Department of Infectious Diseases, Bellvitge University Hospital, Bellvitge Institute for Biomedical Research (IDIBELL), Feixa Llarga s/n, 08907 L’Hospitalet de Llobregat, Spain; (S.G.); (G.C.); (M.P.); (J.C.)
- Centro de Investigación en Red de Enfermedades Infecciosas (CIBERINFEC; CB21/13/00009), Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Isabel Oriol
- Hospital Sant Joan Despí Moisés Broggi, Oriol Martorell 12, 08970 Sant Joan Despí, Spain;
| | - Miquel Pujol
- Department of Infectious Diseases, Bellvitge University Hospital, Bellvitge Institute for Biomedical Research (IDIBELL), Feixa Llarga s/n, 08907 L’Hospitalet de Llobregat, Spain; (S.G.); (G.C.); (M.P.); (J.C.)
- Centro de Investigación en Red de Enfermedades Infecciosas (CIBERINFEC; CB21/13/00009), Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Jordi Carratalà
- Department of Infectious Diseases, Bellvitge University Hospital, Bellvitge Institute for Biomedical Research (IDIBELL), Feixa Llarga s/n, 08907 L’Hospitalet de Llobregat, Spain; (S.G.); (G.C.); (M.P.); (J.C.)
- Centro de Investigación en Red de Enfermedades Infecciosas (CIBERINFEC; CB21/13/00009), Instituto de Salud Carlos III, 28029 Madrid, Spain
- Department of Medicine, University of Barcelona, 08007 Barcelona, Spain
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The Effect of Combination Therapy on Mortality and Adverse Events in Patients with Staphylococcus aureus Bacteraemia: A Systematic Review and Meta-analysis of Randomized Controlled Trials. Infect Dis Ther 2021; 10:2643-2660. [PMID: 34596881 PMCID: PMC8572899 DOI: 10.1007/s40121-021-00539-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Accepted: 09/15/2021] [Indexed: 01/16/2023] Open
Abstract
Introduction The findings of randomized controlled trials (RCTs), observational studies, and meta-analyses vary regarding the effectiveness and safety of combination therapy for patients with Staphylococcus aureus bacteraemia (SAB). We aimed to identify the effectiveness and safety of combination therapy in patients with SAB compared with those of monotherapy. Methods We performed a systematic review and meta-analysis to compare combination therapy versus monotherapy in patients with SAB. Two authors independently searched PubMed, Embase, and the Cochrane Library of clinical trials until 17 February 2021. Any RCT comparing mortality or adverse events (AEs) of combination therapy versus monotherapy for patients with SAB was eligible. Summary risk ratios (RRs) and 95% confidence intervals (CIs) were evaluated using a random-effects model. The primary outcome was all-cause mortality at any time point. This meta-analysis is registered with the PROSPERO database (CRD42020188176) and reported according to PRISMA guidelines. Results In total, 1906 articles were identified and screened, and 14 studies (2367 patients) were included in the meta-analysis. There was no significant difference in the risk of all-cause mortality between the two groups (RR = 1.00; 95% CI 0.83–1.20; P = 0.99; I2 = 0%). Similar results were obtained by subgroup analysis of mortality recording time, endocarditis, pathogen resistance, article publication time, number of patients, and adjuvant antibiotics. Notably, combination treatment might significantly increase the risk of drug-related AEs (RR = 1.68; 95% CI 1.06–2.66; P = 0.03; I2 = 67%) and nephrotoxicity (RR = 2.30; 95% CI 1.68–3.16; P < 0.00001; I2 = 0%), although the occurrences of AEs leading to treatment discontinuation and serious AEs were not significantly different between the two groups. Conclusions The meta-analysis suggested that combination therapy could not reduce mortality but might increase the risk of drug-related AEs and nephrotoxicity and should be applied very cautiously. Future studies on combined drug therapy for SAB need careful and rigorous design for specific antibiotic combinations. Supplementary Information The online version contains supplementary material available at 10.1007/s40121-021-00539-y.
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Almatrafi MA, Alsahaf N, Alsharif EJ, Sayed JA, Telmesani AMA, Alidrisi D, Mohammed A, Mosalli R, Albaihani A. Adjunctive rifampin therapy for native valve Staphylococcus aureus endocarditis in a neonate: A case report and literature review. Clin Case Rep 2021; 9:e04902. [PMID: 34631085 PMCID: PMC8489504 DOI: 10.1002/ccr3.4902] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 09/19/2021] [Indexed: 11/23/2022] Open
Abstract
Infective endocarditis in neonates can be fatal. Adjunctive rifampin therapy might be effective as salvage therapy in critically ill patients with Staphylococcus aureus native valve endocarditis (NVE). We present a case of a full-term neonate with NVE who had a favorable clinical outcome after adding rifampin to standard therapy.
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Affiliation(s)
- Mohammed A Almatrafi
- Department of Pediatrics Umm Al Qura University Makkah Saudi Arabia
- Department of Pediatrics Security Forces Hospital Makkah Saudi Arabia
| | - Nouf Alsahaf
- Medical College of Umm Al Qura University Makkah Saudi Arabia
| | - Elaf J Alsharif
- Department of Pediatrics Security Forces Hospital Makkah Saudi Arabia
| | - Jamal A Sayed
- Department of Pediatrics Security Forces Hospital Makkah Saudi Arabia
| | - Abdulwahab M A Telmesani
- Department of Pediatrics Umm Al Qura University Makkah Saudi Arabia
- Department of Pediatrics Security Forces Hospital Makkah Saudi Arabia
| | - Dhuha Alidrisi
- Department of Pediatrics Security Forces Hospital Makkah Saudi Arabia
| | - Alkhayat Mohammed
- Department of Pediatrics Security Forces Hospital Makkah Saudi Arabia
- Department of Pediatric Cardiology, Maternity and Children Hospital Makkah Saudi Arabia
| | - Rafat Mosalli
- Department of Pediatrics Umm Al Qura University Makkah Saudi Arabia
| | - Ahmed Albaihani
- Department of Pediatrics Security Forces Hospital Makkah Saudi Arabia
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14
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Pyogenic Lumbar Facet Joint Infection with Foot Drop. Case Rep Orthop 2021; 2021:5544126. [PMID: 33976947 PMCID: PMC8087468 DOI: 10.1155/2021/5544126] [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: 02/15/2021] [Revised: 04/09/2021] [Accepted: 04/11/2021] [Indexed: 11/18/2022] Open
Abstract
Pyogenic facet joint infection (PFJI) is a relatively rare spinal infection. Clinical suspicion of this condition is a key for diagnosis. We report a case of PFJI which required decompression surgery for severe neurological dysfunction. The patient was a 44-year-old woman who had a previous history of orthotic therapy for idiopathic scoliosis. The patient was admitted to our hospital with a history of two days of high fever and severe low back pain. There was no neurologic deficit, and blood tests revealed high levels of inflammatory markers. There was a slight amount of fluid that had collected at L4/5 facet joint in lumbar MRI. She was admitted for examination and treatment of fever of unknown origin and low back pain. Antibiotic treatment started the day after hospitalization since the first report of the blood culture taken upon admission tested positive to gram-positive cocci. As low back pain and fever persisted, an MRI was taken again on the fifth day of hospitalization. Repeated MRI showed fluid extension from the left facet joint to paravertebral muscles and epidural space. She was diagnosed with PFJI, and facet joint puncture was performed. At this time, it became clear that she had foot drop on the right, the contralateral side of the PFJI. She underwent irrigation, debridement, and partial laminectomy. Methicillin-sensitive Staphylococcus aureus (MSSA) was detected in blood cultures at the time of hospitalization, in the puncture fluid and tissue collected during surgery. The patient recovered completely from foot drop after the operation and a three-month course of antibiotics. As the imaging findings may be inadequate in the early stages of onset and PFJI potentially causes neurologic deficit such as foot drop, neurological findings need to be carefully observed even after hospitalization and one should reexamine the MRI if symptoms or clinical findings did not improve or were aggravated.
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15
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Deger I, Başaranoğlu M, Demir N, Aycan A, Tuncer O. Efficiency of Topical Rifampin on Infection in Open Neural Tube Defects: A randomized controlled trial. Int J Neurosci 2021; 131:1215-1220. [PMID: 33843404 DOI: 10.1080/00207454.2021.1909583] [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: 10/21/2022]
Abstract
Objectives: Neural tube defects are the second most common congenital malformation in humans. Despite significant decreases in neural tube defects and related mortality and morbidity with recent developments, infections remain an important problem. Research on the role of topical therapy for managing neural tube defects and associated infections in the neonatal period has been limited. This randomized controlled trial aimed to investigate the efficiency of topical Rifampin on infection control in paraplegic newborns with open neural tube defects.Methods: Thirty-seven patients who underwent an operation for neural tube defects were included. Topical Rifampin and cefotaxime were administered to 19 patients constituting the case group and local saline and cefotaxime were administered to a control group. Patients were examined for ventriculoperitoneal shunt infection/dysfunction, surgical site infection, urinary tract infection, and sepsis.Results: None of the patients using topical rifampin had ventriculoperitoneal shunt infection/dysfunction, surgical site infection, urinary tract infection, or sepsis. In the control group, ventriculoperitoneal shunt infection/dysfunction was found in 4 (22.2%) cases, surgical site infection in 3 (27.7%), urinary tract infection in 3 (27.7%), and sepsis in 5 (27.7%), with statistically significant differences between the groups (p = 0.01, p = 0.032, p = 0.032, and p = 0.002, respectively). No local or systemic side effect was observed regarding rifampin use.Conclusion: Topical Rifampin is effective in minimizing complications like sepsis, surgical site infection, urinary tract infection, and ventriculoperitoneal shunt infection due to neural tube defect operations. Further research with larger numbers of cases is needed to implement this practice routinely.
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Affiliation(s)
- Ibrahim Deger
- Dicle University School of Medicine, Department of Pediatric, division of neonatology, Diyarbakir, Turkey
| | - Murat Başaranoğlu
- University of Health Sciences, Department of Pediatric, division of neonatology, Van, Turkey
| | - Nihat Demir
- Esenyurt Private Hospital, Department of Pediatric, division of neonatology, İstanbul, Turkey
| | - Abdurrahman Aycan
- Yuzuncu Yıl University Faculty of Medicine, Department of Neurosurgery, Van, Turkey
| | - Oğuz Tuncer
- Yuzuncu Yıl University Faculty of Medicine, division of neonatology, Van, Turkey
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Renz N, Trampuz A, Zimmerli W. Controversy about the Role of Rifampin in Biofilm Infections: Is It Justified? Antibiotics (Basel) 2021; 10:antibiotics10020165. [PMID: 33562821 PMCID: PMC7916064 DOI: 10.3390/antibiotics10020165] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Revised: 01/29/2021] [Accepted: 02/03/2021] [Indexed: 01/04/2023] Open
Abstract
Rifampin is a potent antibiotic against staphylococcal implant-associated infections. In the absence of implants, current data suggest against the use of rifampin combinations. In the past decades, abundant preclinical and clinical evidence has accumulated supporting its role in biofilm-related infections.In the present article, experimental data from animal models of foreign-body infections and clinical trials are reviewed. The risk for emergence of rifampin resistance and multiple drug interactions are emphasized. A recent randomized controlled trial (RCT) showing no beneficial effect of rifampin in patients with acute staphylococcal periprosthetic joint infection treated with prosthesis retention is critically reviewed and data interpreted. Given the existing strong evidence demonstrating the benefit of rifampin, the conduction of an adequately powered RCT with appropriate definitions and interventions would probably not comply with ethical standards.
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Affiliation(s)
- Nora Renz
- Center for Musculoskeletal Surgery, Charité-Universitätsmedizin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, 10117 Berlin, Germany;
- Department of Infectious Diseases, Bern University Hospital, University of Bern, 3010 Bern, Switzerland
| | - Andrej Trampuz
- Center for Musculoskeletal Surgery, Charité-Universitätsmedizin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, 10117 Berlin, Germany;
- Correspondence:
| | - Werner Zimmerli
- Interdisciplinary Unit of Orthopaedic Infections, Kantonsspital Baselland, 4410 Liestal, Switzerland;
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Wełnicki M, Buksińska-Lisik M, Mamcarz A. Two Strategies for the Dosage of Acenocoumarol Co-Administered with Rifampicin in Staphylococcal Prosthetic Valve Endocarditis. Antibiotics (Basel) 2021; 10:38. [PMID: 33401531 PMCID: PMC7824006 DOI: 10.3390/antibiotics10010038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 12/23/2020] [Accepted: 12/31/2020] [Indexed: 11/17/2022] Open
Abstract
According to current European Society of Cardiology guidelines, for staphylococcal prosthetic valve endocarditis, rifampicin should be one of the drugs used. However, there is a concomitant need for vitamin K antagonists in patients with mechanical prostheses. It is widely known that rifampicin interacts with vitamin K antagonists (VKA), and this interaction makes it difficult to maintain the INR (international normalized ratio) value in the therapeutic range. We present two clinical cases of staphylococcal prosthetic valve endocarditis patients. Two different strategies for dealing with adverse drug interactions have been applied. In the first case, the dose of warfarin was up-titrated until the optimal INR value was obtained. In the second case, due to the history of labile INR values, a decision was made to modify the dosage of warfarin, taking into account pharmacological aspects of drug interactions.
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Affiliation(s)
- Marcin Wełnicki
- 3rd Department of Internal Medicine and Cardiology, Medical University of Warsaw, Bursztynowa 2, 04-479 Warsaw, Poland; (M.B.-L.); (A.M.)
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Adjuvant β-Lactam Therapy Combined with Vancomycin or Daptomycin for Methicillin-Resistant Staphylococcus aureus Bacteremia: a Systematic Review and Meta-analysis. Antimicrob Agents Chemother 2020; 64:AAC.01377-20. [PMID: 32839217 PMCID: PMC7577142 DOI: 10.1128/aac.01377-20] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 08/07/2020] [Indexed: 12/24/2022] Open
Abstract
Infections due to methicillin-resistant Staphylococcus aureus bacteremia (MRSAB) seriously threaten public health due to poor outcomes and high mortality. The objective of this study is to perform a systematic review and meta-analysis of the current evidence on adjuvant β-lactam (BL) therapy combined with vancomycin (VAN) or daptomycin (DAP) for MRSAB. PubMed, Embase, and Cochrane Library were systematically searched for publications reporting clinical outcomes of BLs+VAN or BLs+DAP for adult patients with MRSAB through 5 April 2020. Meta-analysis techniques were applied using random effects modeling. Three randomized controlled trials and 12 retrospective cohort studies were identified, totaling 2,594 patients. Combination treatment significantly reduced the risk of clinical failure (risk ratio [RR] = 0.80; 95% confidence interval [CI], 0.66 to 0.96; P = 0.02; I2 = 39%), bacteremia recurrence (RR = 0.66; 95% CI, 0.50 to 0.86; P = 0.002; I2 = 0%), and persistent bacteremia (RR = 0.65; 95% CI, 0.55 to 0.76; P < 0.00001; I2 = 0%) and shortened the duration of bacteremia (standardized mean difference [SMD] = -0.37; 95% CI, -0.48 to -0.25; P < 0.00001; I2 = 0%). There was no significant difference in the risk of crude mortality, nephrotoxicity, or thrombocytopenia between groups. Notably, combination treatment might nonsignificantly increase the risk of Clostridium difficile infection (CDI) (RR = 2.13; 95% CI, 0.98 to 4.63; P = 0.06; I2 = 0%). Subgroup analysis suggested that DAP+BLs could reduce crude mortality (RR = 0.53; 95% CI, 0.28 to 0.98; P = 0.04; I2 = 0%). The meta-analysis suggested that although combination therapy with BLs could improve some microbial outcomes, it could not reduce crude mortality but might increase the risk of CDI and should be applied very cautiously. Regarding mortality reduction, the combination of DAP+cephalosporins appears more promising.
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