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Neisseria sicca is a commensal organism belonging to the genus Neisseria. It is Gram-negative and oxidase-positive. There are multiple strains of this species, some of which are reported to have caused septicaemia in immunocompromised patients. These bacteria are the first among Neisseria species to have been shown to have O-repeat structure in ...
Neisseria is a large genus of bacteria that colonize the mucosal surfaces of many animals. Of the 11 species that colonize humans, only two are pathogens , N. meningitidis and N. gonorrhoeae . Neisseria species are Gram-negative bacteria included among the Pseudomonadota , a large group of Gram-negative forms.
Although TEM-type beta-lactamases are most often found in E. coli and K. pneumoniae, they are also found in other species of gram-negative bacteria with increasing frequency. The amino acid substitutions responsible for the extended-spectrum beta lactamase (ESBL) phenotype cluster around the active site of the enzyme and change its ...
The Neisseriaceae are a family [2] of Pseudomonadota, within the Neisseriales order of Betaproteobacteria.While many organisms in the family are mammalian commensals or part of the normal flora, the genus Neisseria includes two important human pathogens, specifically those responsible for gonorrhea (caused by N. gonorrhoeae) and many cases of meningitis ("meningococcal meningitis", caused by N ...
Next, 16S rRNA sequencing was done, further confirming that Neisseria flavescens was indeed the causative agent. [4] Lastly, this bacteria has also been the pathogen behind a case of endocarditis. Testing β-lactamase positive, Neisseria flavescens rendered penicillin an ineffective treatment for the patient and, instead, was targeted by ...
Penicillinase-mediated resistance in N. gonorrhoeae is mediated by the plasmid borne TEM-1 type beta-lactamase which falls under the third general mechanism for beta-lactam resistance. [2] There have been over 200 beta-lactamases described and some of them are antibiotic specific. [7] TEM-1 is a penicillinase specific for penicillins.
Neisseria lactamica is a gram-negative diplococcus bacterium. It is strictly a commensal species of the nasopharynx . Uniquely among the Neisseria they are able to produce β-D-galactosidase and ferment lactose.
For example, Neisseria gonorrhoeae and N. meningitidis cause gonorrhea and meningitis respectively, while Bordetella pertussis causes whooping cough. Other members of the class infect plants, such as Ralstonia solanacearum which causes bacterial wilt disease of over 250 plant species, Burkholderia cepacia which causes bulb rot in onions, and ...