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Antibiotic resistance can be introduced artificially into a microorganism through laboratory protocols, sometimes used as a selectable marker to examine the mechanisms of gene transfer or to identify individuals that absorbed a piece of DNA that included the resistance gene and another gene of interest. [162]
Plasmid-mediated resistance is the transfer of antibiotic resistance genes which are carried on plasmids. [1] Plasmids possess mechanisms that ensure their independent replication as well as those that regulate their replication number and guarantee stable inheritance during cell division.
The evolution of bacteria on a "Mega-Plate" petri dish A list of antibiotic resistant bacteria is provided below. These bacteria have shown antibiotic resistance (or antimicrobial resistance). Gram positive Clostridioides difficile Clostridioides difficile is a nosocomial pathogen that causes diarrheal disease worldwide. Diarrhea caused by C. difficile can be life-threatening. Infections are ...
The four main mechanisms by which microorganisms exhibit resistance to antimicrobials are: [28] [29] Drug inactivation or modification: e.g., enzymatic deactivation of Penicillin G in some penicillin-resistant bacteria through the production of β-lactamases.
The Comprehensive Antibiotic Resistance Database (CARD) is a biological database that collects and organizes reference information on antimicrobial resistance genes, proteins and phenotypes. [ 1 ] [ 2 ] The database covers all types of drug classes and resistance mechanisms and structures its data based on an ontology.
Antibiotic resistant bacteria are able to transfer copies of DNA that code for a mechanism of resistance to other bacteria even distantly related to them, which then are also able to pass on the resistance genes, resulting in generations of antibiotics resistant bacteria. [11] This initial transfer of DNA is called horizontal gene transfer. [12]
Paleontological data show that both antibiotics and antibiotic resistance are ancient compounds and mechanisms. [91] Useful antibiotic targets are those for which mutations negatively impact bacterial reproduction or viability. [92] Several molecular mechanisms of antibacterial resistance exist.
ARDB also known as Antibiotic Resistance Genes Database is a database that tracks antibiotic resistance genes with information such as mechanism of action, resistance profile, ontology, Clusters of Orthologous Genes (COG) and Conserved Domain Database (CDD) annotations. [1] It also contains links to external databases.