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... L,D-transpeptidases, widely distributed in bacteria and even in the difficult-to-treat ESKAPE pathogens, can confer antibacterial resistance against the traditional β-lactam antibiotics through bypass of the 4 → 3 transpeptide linkage. LdtMt2, a l,d-transpeptidase in Mycobacteria tuberculosis, is essential for bacterial virulence and is considered as a potential anti-tuberculosis target inhibited ...
aminoglycosides; antibiotic resistance; carbapenems; databases; desorption; essential genes; fluoroquinolones; genomics; humans; mass spectrometry; microorganisms; minocycline; mutation; new species; pathogens; patients; piperacillin; sequence analysis; species identification
Abstract:
... The genus Elizabethkingia has recently emerged as a cause of life-threatening infections in humans, particularly in immunocompromised patients. Several new species in the genus Elizabethkingia have been proposed in the last decade. Numerous studies have indicated that Elizabethkingia anophelis, rather than Elizabethkingia meningoseptica, is the most prevalent pathogen in this genus. Matrix-assiste ...
... Moraxella is an ocular bacterial pathogen isolated in cases of keratitis, conjunctivitis, and endophthalmitis. Gram-negative brick-shaped diplobacilli from ocular specimens, and slow growth in culture, are early indications of Moraxella ocular infection; however, identifying Moraxella to species can be complex and inconsistent. In this study, bacteria consistent with Moraxella were identified to s ...
Manel Cheffi; Ali Chenari Bouket; Faizah N. Alenezi; Lenka Luptakova; Marta Belka; Armelle Vallat; Mostafa E. Rateb; Slim Tounsi; Mohamed Ali Triki; Lassaad Belbahri
... Oomycete and fungal pathogens, mainly Phytophthora and Fusarium species, are notorious causal agents of huge economic losses and environmental damages. For instance, Phytophthora ramorum, Phytophthora cryptogea, Phytophthora plurivora and Fusarium solani cause significant losses in nurseries and in forest ecosystems. Chemical treatments, while harmful to the environment and human health, have been ...
Oncorhynchus mykiss; Staphylococcus xylosus; antibiotic resistance; bacteria; eyes; financial economics; fish diseases; fisheries; hospitals; humans; livestock; methicillin; methicillin-resistant Staphylococcus aureus; mortality; pathogenicity; public health; risk; signs and symptoms (animals and humans); staphylococcal infections; trout; wild animals; zoonoses
Abstract:
... Staphylococcal infections are extensively investigated in humans owing to the resistance of staphylococci to diverse antibiotics commonly used in hospitals. The resistance mechanism of methicillin-resistant Staphylococcus aureus has garnered the interest of researchers due to its risk to the global public health. Furthermore, the zoonotic potential of staphylococci has led to increased interest in ...
... The ATP binding cassette protein superfamily comprises ATPase enzymes which are, for the most part, involved in transmembrane transport. Within this superfamily however, some protein families have other functions unrelated to transport. One example is the ABC-F family, which comprises an extremely diverse set of cytoplasmic proteins. All of the proteins in the ABC-F family characterized to date ac ...
Victoriia Murina; Marje Kasari; Hiraku Takada; Mariliis Hinnu; Chayan Kumar Saha; James W. Grimshaw; Takahiro Seki; Michael Reith; Marta Putrinš; Tanel Tenson; Henrik Strahl; Vasili Hauryliuk; Gemma Catherine Atkinson
... Within the larger ABC superfamily of ATPases, ABCF family members eEF3 in Saccharomyces cerevisiae and EttA in Escherichia coli have been found to function as ribosomal translation factors. Several other ABCFs including biochemically characterized VgaA, LsaA and MsrE confer resistance to antibiotics that target the peptidyl transferase center and exit tunnel of the ribosome. However, the diversity ...
... Cell dormancy is a widespread mechanism used by bacteria to evade environmental threats, including antibiotics. Here we monitored bacterial antibiotic tolerance and regrowth at the single-cell level and found that each individual survival cell shows different “dormancy depth,” which in return regulates the lag time for cell resuscitation after removal of antibiotic. We further established that pro ...
... The present study aimed to investigate the presence of Vibrio vulnificus in fish captured at the Lagoa dos Patos estuary (RS, Brazil), to establish a correlation between bacterial biofilm formation and sublethal stress, and to assess the resistance of the isolates to antimicrobials and sanitizers. A total of 217 isolates characteristic of Vibrio sp. were analyzed. Isolates were identified and subs ...
... After consumption, antibiotic residues and exposed bacteria end up via the feces in wastewater, and therefore wastewater is believed to play an important role in the spread of antimicrobial resistance (AMR). We investigated the abundance and AMR profiles of three different species over a complete wastewater pathway during a one-year sampling campaign, as well as including antimicrobial consumption ...
... The impact of anaerobic digestion of animal waste on the persistence of antibiotic resistance genes (ARGs) and antibiotics is not widely studied. Two identical, 800‐L digesters seeded with swine slurry were followed up to 100 d in three separate trials. The trials received varying amounts of antibiotic‐free corn (Zea mays L.) mixed with water to maintain the digestion process. Biogas production, s ...
Gram-negative bacteria; Salmonella; acetic acid; agar; analysis of variance; antibiotic resistance; brain; cell walls; heart; mechanism of action; multiple drug resistance; permeability; screening; vancomycin
Abstract:
... Salmonella is a gram-negative bacterium with intrinsic resistance to large-scaffold antibiotics due to the presence of an outer membrane. Based on the mode of action of the organic acids in outer membrane disintegration, and consequently, an enhancement in cell permeability, a combination of acetic acid and a large-scaffold antibiotic is it evaluated. Therefore, the aim of this study is to assess ...
... In total, 95 Acinetobacter baumannii isolates recovered from patients from two hospitals in Cochabamba, Bolivia were studied. The presence of class D and B β-lactamases was investigated using polymerase chain reaction, and antimicrobial susceptibility testing was performed by agar dilution and broth microdilution. The resistance rate to carbapenems was 53.7%. All carbapenem-resistant A. baumannii ...
... The emergence and global spread of drug resistant Acinetobacter (A.) baumannii is a cause of great concern. The current knowledge on antibiotic resistance in A. baumannii from animal origin is mostly based on few internationally published case reports, investigations of strain collections and several whole genome analyses. This lack of data results in a somewhat sketchy picture on how to assess th ...
... The extra-hospital epidemiology of Acinetobacter infections is a subject of debate. In recent years, the prevalence of animal multidrug-resistant Acinetobacter infections has increased considerably. The goal of the present study was to specify Acinetobacter species isolated from laboratory mice and to test them for their antimicrobial susceptibility. During routine microbiological monitoring of la ...
... Taylorella equigenitalis can be transmitted during artificial insemination. This report describes clinical T. equigenitalis transmission by cryopreserved stallion semen. T. equigenitalis isolates from a mare's vaginal discharge and semen from the same batch of the cryopreserved semen used for the insemination gave identical API ZYM, antibiotic susceptibility, and multilocus sequence typing results ...
... AIM: The aim of this study was to investigate the natural variation in the antibiotic sensitivity, biofilm formation and virulence among Pseudomonas aeruginosa isolated from the catheter‐associated urinary tract infection (CAUTI) from a single centre. METHODS AND RESULTS: Pseudomonas aeruginosa strains were isolated from the patients with CAUTI after obtaining informed consent. These isolates were ...
... The increasing percentage of Pseudomonas aeruginosa strains that are resistant to multiple antibiotics is a global problem. The exposure of P. aeruginosa isolates to repeated sub lethal concentrations of biocides in hospitals and communities may be one of the causes leading to increased antibiotic resistance. Benzalkonium chloride (BAC) is widely used as disinfectant and preservative. This study i ...
Jinzi Deng; Lang Zhou; Robert A. Sanford; Lauren A. Shechtman; Yiran Dong; Reinaldo E. Alcalde; Mayandi Sivaguru; Glenn A. Fried; Charles J. Werth; Bruce W. Fouke
... A microfluidic gradient chamber (MGC) and a homogeneous batch culturing system were used to evaluate whether spatial concentration gradients of the antibiotic ciprofloxacin allow development of greater antibiotic resistance in Escherichia coli strain 307 (E. coli 307) compared to exclusively temporal concentration gradients, as indicated in an earlier study. A linear spatial gradient of ciprofloxa ...
... CRISPR-Cas systems provide adaptive immunity against mobile genetic elements, but employment of this resistance mechanism is often reported with a fitness cost for the host. Whether or not CRISPR-Cas systems are important barriers for the horizontal spread of conjugative plasmids, which play a crucial role in the spread of antibiotic resistance, will depend on the fitness costs of employing CRISPR ...