scholarly journals Antibiogram Typing and Biochemical Characterization of Klebsiella pneumoniae after Biofield Treatment

2017 ◽  
Author(s):  
Dahryn Trivedi
Keyword(s):  
Klebsiella Pneumoniae ◽  
Biochemical Characterization ◽  
Biochemical Study ◽  
Enterobacter Aerogenes ◽  
Multidrug Resistant ◽  
Clinical Isolates ◽  
Control Group ◽  
Biochemical Reactions ◽  
Antimicrobial Sensitivity ◽  
The Impact

Klebsiella pneumoniae (K. pneumoniae) is a common nosocomial pathogen causing respiratory tract (pneumoniae) and blood stream infections. Multidrug-resistant (MDR) isolates of K. pneumoniae infections are difficult to treat in patients in health care settings. Aim of the present study was to determine the impact of Mr. Trivedi’s biofield treatment on four MDR clinical lab isolates (LS) of K. pneumoniae (LS 2, LS 6, LS 7, and LS 14). Samples were divided into two groups i.e. control and biofield treated. Control and treated groups were analyzed for antimicrobial susceptibility pattern, minimum inhibitory concentration (MIC), biochemical study and biotype number using MicroScan Walk-Away® system. The analysis was done on day 10 after biofield treatment as compared with control group. Antimicrobial sensitivity assay showed that there was 46.42% alteration in sensitivity of tested antimicrobials in treated group of MDR K. pneumonia isolates. MIC results showed an alteration in 30% of tested antimicrobials out of thirty after biofield treatment in clinical isolates of K. pneumoniae. An increase in antimicrobial sensitivity and decrease in MIC value was reported (in LS 6) in case of piperacillin/tazobactam and piperacillin. Biochemical study showed a 15.15% change in biochemical reactions as compared to control. A significant change in biotype numbers were reported in all four clinical isolates of MDR K. pneumoniae after biofield treatment as compared to control group. On the basis of changed biotype number after biofield treatment, new organism was identified as Enterobacter aerogenes in LS 2 and LS 14. These results suggest that biofield treatment has a significant effect on altering the antimicrobial sensitivity, MIC values, biochemical reactions and biotype number of multidrug-resistant isolates of K. pneumoniae.

scholarly journals Carbapenem-Resistant Klebsiella pneumoniae Clinical Isolates: In Vivo Virulence Assessment in Galleria mellonella and Potential Therapeutics by Polycationic Oligoethyleneimine

Antibiotics ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 56
Author(s):  
Dalila Mil-Homens ◽  
Maria Martins ◽  
José Barbosa ◽  
Gabriel Serafim ◽  
Maria J. Sarmento ◽  
...  
Keyword(s):  
Klebsiella Pneumoniae ◽  
Galleria Mellonella ◽  
Multidrug Resistant ◽  
In Vitro Models ◽  
Clinical Isolates ◽  
In Vivo Model ◽  
Virulence Potential ◽  
Hospital Acquired

Klebsiella pneumoniae, one of the most common pathogens found in hospital-acquired infections, is often resistant to multiple antibiotics. In fact, multidrug-resistant (MDR) K. pneumoniae producing KPC or OXA-48-like carbapenemases are recognized as a serious global health threat. In this sense, we evaluated the virulence of K. pneumoniae KPC(+) or OXA-48(+) aiming at potential antimicrobial therapeutics. K. pneumoniae carbapenemase (KPC) and the expanded-spectrum oxacillinase OXA-48 isolates were obtained from patients treated in medical care units in Lisbon, Portugal. The virulence potential of the K. pneumonia clinical isolates was tested using the Galleria mellonella model. For that, G. mellonella larvae were inoculated using patients KPC(+) and OXA-48(+) isolates. Using this in vivo model, the KPC(+) K. pneumoniae isolates showed to be, on average, more virulent than OXA-48(+). Virulence was found attenuated when a low bacterial inoculum (one magnitude lower) was tested. In addition, we also report the use of a synthetic polycationic oligomer (L-OEI-h) as a potential antimicrobial agent to fight infectious diseases caused by MDR bacteria. L-OEI-h has a broad-spectrum antibacterial activity and exerts a significantly bactericidal activity within the first 5-30 min treatment, causing lysis of the cytoplasmic membrane. Importantly, the polycationic oligomer showed low toxicity against in vitro models and no visible cytotoxicity (measured by survival and health index) was noted on the in vivo model (G. mellonella), thus L-OEI-h is foreseen as a promising polymer therapeutic for the treatment of MDR K. pneumoniae infections.

scholarly journals A Novel Cecropin D-Derived Short Cationic Antimicrobial Peptide Exhibits Antibacterial Activity Against Wild-Type and Multidrug-Resistant Strains of Klebsiella pneumoniae and Pseudomonas aeruginosa

2020 ◽  
Vol 16 ◽  
pp. 117693432093626
Author(s):  
Iván Darío Ocampo-Ibáñez ◽  
Yamil Liscano ◽  
Sandra Patricia Rivera-Sánchez ◽  
José Oñate-Garzón ◽  
Ashley Dayan Lugo-Guevara ◽  
...  
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Antibacterial Activity ◽  
Klebsiella Pneumoniae ◽  
Multidrug Resistant ◽  
Clinical Isolates ◽  
Health Concern ◽  
Wild Type ◽  
Cationic Antimicrobial Peptide ◽  
Promising Alternative ◽  
Resistant Strains

Infections caused by multidrug-resistant (MDR) Pseudomonas aeruginosa and Klebsiella pneumoniae are a serious worldwide public health concern due to the ineffectiveness of empirical antibiotic therapy. Therefore, research and the development of new antibiotic alternatives are urgently needed to control these bacteria. The use of cationic antimicrobial peptides (CAMPs) is a promising candidate alternative therapeutic strategy to antibiotics because they exhibit antibacterial activity against both antibiotic susceptible and MDR strains. In this study, we aimed to investigate the in vitro antibacterial effect of a short synthetic CAMP derived from the ΔM2 analog of Cec D-like (CAMP-CecD) against clinical isolates of K pneumoniae (n = 30) and P aeruginosa (n = 30), as well as its hemolytic activity. Minimal inhibitory concentrations (MICs) and minimal bactericidal concentrations (MBCs) of CAMP-CecD against wild-type and MDR strains were determined by the broth microdilution test. In addition, an in silico molecular dynamic simulation was performed to predict the interaction between CAMP-CecD and membrane models of K pneumoniae and P aeruginosa. The results revealed a bactericidal effect of CAMP-CecD against both wild-type and resistant strains, but MDR P aeruginosa showed higher susceptibility to this peptide with MIC values between 32 and >256 μg/mL. CAMP-CecD showed higher stability in the P aeruginosa membrane model compared with the K pneumoniae model due to the greater number of noncovalent interactions with phospholipid 1-Palmitoyl-2-oleyl-sn-glycero-3-(phospho-rac-(1-glycerol)) (POPG). This may be related to the boosted effectiveness of the peptide against P aeruginosa clinical isolates. Given the antibacterial activity of CAMP-CecD against wild-type and MDR clinical isolates of P aeruginosa and K pneumoniae and its nonhemolytic effects on human erythrocytes, CAMP-CecD may be a promising alternative to conventional antibiotics.

scholarly journals Inhibitors of Antibiotic Efflux in Resistant Enterobacter aerogenes and Klebsiella pneumoniae Strains

2004 ◽  
Vol 48 (3) ◽  
pp. 1043-1046 ◽  
Author(s):  
Jacqueline Chevalier ◽  
Jérôme Bredin ◽  
Abdallah Mahamoud ◽  
Monique Malléa ◽  
Jacques Barbe ◽  
...  
Keyword(s):  
Multidrug Resistance ◽  
Klebsiella Pneumoniae ◽  
Efflux Pump ◽  
Enterobacter Aerogenes ◽  
Drug Susceptibility ◽  
Multidrug Resistant ◽  
Resistance Phenotype ◽  
Pump Mechanism ◽  
Energy Dependent ◽  
Antibiotic Efflux

ABSTRACT In Enterobacter aerogenes and Klebsiella pneumoniae, efflux provides efficient extrusion of antibiotics and contributes to the multidrug resistance phenotype. One of the alkoxyquinoline derivatives studied here, 2,8-dimethyl-4-(2′-pyrrolidinoethyl)-oxyquinoline, restores noticeable drug susceptibility to resistant clinical strains. Analyses of energy-dependent chloramphenicol efflux indicate that this compound inhibits the efflux pump mechanism and improves the activity of structurally unrelated antibiotics on multidrug-resistant E. aerogenes and K. pneumoniae isolates.

scholarly journals Transmission dynamics and control of multidrug-resistant Klebsiella pneumoniae in neonates in a developing country

eLife ◽  
2019 ◽  
Vol 8 ◽  
Author(s):  
Thomas Crellen ◽  
Paul Turner ◽  
Sreymom Pol ◽  
Stephen Baker ◽  
To Nguyen Thi Nguyen ◽  
...  
Keyword(s):  
Klebsiella Pneumoniae ◽  
Neonatal Intensive Care ◽  
Dynamic Models ◽  
Generation Cephalosporin ◽  
Multidrug Resistant ◽  
Transmission Risk ◽  
Dynamics And Control ◽  
One Year ◽  
And Control ◽  
The Impact

Multidrug-resistant Klebsiella pneumoniae is an increasing cause of infant mortality in developing countries. We aimed to develop a quantitative understanding of the drivers of this epidemic by estimating the effects of antibiotics on nosocomial transmission risk, comparing competing hypotheses about mechanisms of spread, and quantifying the impact of potential interventions. Using a sequence of dynamic models, we analysed data from a one-year prospective carriage study in a Cambodian neonatal intensive care unit with hyperendemic third-generation cephalosporin-resistant K. pneumoniae. All widely-used antibiotics except imipenem were associated with an increased daily acquisition risk, with an odds ratio for the most common combination (ampicillin + gentamicin) of 1.96 (95% CrI 1.18, 3.36). Models incorporating genomic data found that colonisation pressure was associated with a higher transmission risk, indicated sequence type heterogeneity in transmissibility, and showed that within-ward transmission was insufficient to maintain endemicity. Simulations indicated that increasing the nurse-patient ratio could be an effective intervention.

scholarly journals Occurrence of Efflux Mechanism and Cephalosporinase Variant in a Population of Enterobacter aerogenes and Klebsiella pneumoniae Isolates Producing Extended-Spectrum β-Lactamases

2009 ◽  
Vol 53 (4) ◽  
pp. 1652-1656 ◽  
Author(s):  
Que-Tien Tran ◽  
Myrielle Dupont ◽  
Jean-Philippe Lavigne ◽  
Jacqueline Chevalier ◽  
Jean-Marie Pagès ◽  
...  
Keyword(s):  
Multidrug Resistance ◽  
Klebsiella Pneumoniae ◽  
Enterobacter Aerogenes ◽  
Clinical Isolates ◽  
Active Efflux ◽  
Specific Mutation ◽  
Extended Spectrum ◽  
Efflux Mechanism

ABSTRACT We investigated the occurrence of multidrug resistance in 44 Enterobacter aerogenes and Klebsiella pneumoniae clinical isolates. Efflux was involved in resistance in E. aerogenes isolates more frequently than in K. pneumoniae isolates (100 versus 38% of isolates) and was associated with the expression of phenylalanine arginine β-naphthylamide-susceptible active efflux. AcrA-TolC overproduction in E. aerogenes isolates was noted. An analysis of four E. aerogenes isolates for which cefepime MICs were high revealed no modification in porin expression but a new specific mutation in the AmpC β-lactamase.

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