Diplococcus


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Related to Diplococcus: Neisseria gonorrhoeae, staphylococcus
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Diplococcus

 

a genus of bacteria of the family Lactobacteriaceae. They are chiefly spherical bacteria, which are found in pairs as a result of division in a single plane; at times they form short chains. They are gram positive. The genus has only one species, D. pneumoniae (pneumococcus), which has more than 80 serotypes. Diplococcus is one of the causative agents of lobar pneumonia. Certain Diplococcus— those that are gram negative and the pisiform bacteria—are classified in the genus Neisseria, family Neisseriaceae.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
The urethral culture shows a gram-negative oxidase-positive diplococcus and testing confirms N gonorrhoeae.
Vaginal medium of mares had the following nonpathogenic microorganisms: Lactobacterium, Bifidobacterium, Sarcina, Corynebacterium, partly representatives of the genus Diplococcus, Streptococcus, and Staphylococcus.
In Carol A Kauffmann M D et al (19) study of 5 patients, Diplococcus pneumonia was isolated from 4 patients and 1 patient didn't show any organisms and he had previously received penicillin.
The gram-negative diplococcus Neisseria gonorrhoeae is the causal agent of gonorrhoea, one of the two most common sexually transmitted diseases [1].
In patients aged <12 months, a suspected case of meningitis occurs when fever is accompanied by a bulging fontanelle Probable case of bacterial meningitis: Suspected case of acute meningitis, as defined above, with turbid cerebrospinal fluid (CSF) Probable case of meningococcal meningitis: Suspected case of acute meningitis, as defined above, and Gram stain showing gram-negative diplococcus or ongoing epidemic or petechial or purpural rash To confirm a case of meningococcal meningitis: Suspected case, as defined above, with either positive-CSF antigen detection for Neisseria meningitidis or positive CSF or blood culture with identification of N.
(1989) Transglycosylation and transfer reaction activities of endo-a-N-acetyl-D-galactosaminidase from Diplococcus (Streptococcus) pneumoniae.
pentosaceus fermentum rhamnosus TMU457 TMU121 TMU094 Morphology Cocci * Rod Rod L-arabinose + - - D-xylose + - - L-sorbose - - + L-rhamnose + - + Inositol - - + D-mannitol - - + D-sorbitol - - + Methyl-a D- - - + Glucopyranoside N-acetyl glucosamine + - + Amygdalin + - + Arbutin + - + D-maltose - + + D-sucrose - + - D-trehalose + - + D-melezitose - - + Gentibiose + - + D-turanose - - + D-xylose - - + D-tagatose + - + Potassium 2-Keto + - - gluconate * Diplococcus. + : Able to ferment the substrate.
Culture of Neisseria gonorrhoeae, a Gram-negative diplococcus, requires plating on selective media and incubation at 36 [degrees]C in a C[O.sub.2]-enriched atmosphere.
"Alterations in thyroid hormone economy during acute infection with Diplococcus pneumoniae in the rhesus monkey." J Clin Invest, 1971; 50:378.
Fastidious, encapsulated, aerobic, gram-negative diplococcus, grows best in a capnophilic environment, non-hemolytic and tests positive both for catalase and Kovac's oxidase reactions.
In 1884, Italian pathologists Ettore Marchiafava and Angelo Celli described intracellular micrococci in cerebrospinal fluid, and in 1887, Anton Wiechselbaum identified the meningococcus (designated as Diplococcus intracellularis meningitidis) in cerebrospinal fluid and established the connection between the organism and epidemic meningitis.