Neisseria species

Neisseria - an overview ScienceDirect Topic

Neisseria species are gram-negative, oxidase-positive bacteria. All are catalase-positive, except N. bacilliformis and N. elongata. All are diplococci, except N. bacilliformis, N. elongata, and N. weaveri. Whereas meningococci and gonococci require additional carbon dioxide for optimal growth and grow only at temperatures of 30°C to 37°C, the other species are less fastidious; they do not require extra carbon dioxide and can grow at 22°C to 25°C Neisseria gonorrhoeae, also known as gonococcus (singular), or gonococci (plural) is a species of Gram-negative diplococci bacteria isolated by Albert Neisser in 1879. It causes the sexually transmitted genitourinary infection gonorrhea as well as other forms of gonococcal disease including disseminated gonococcemia, septic arthritis, and gonococcal ophthalmia neonatorum

One species ( Neisseria elongata ) is an exception and consists of short rods 0.5 micrometers in width and is often arranged as diplobacilli or in short chains. Division of the coccal species is in two planes at right angles to each other sometimes results in tetrad formations. Size: 0.6-1.0 micrometers in diameter Neisseria are diplococci with their adjacent sides flattened. They are aerobic, strongly oxidase-positive, have an oxidative metabolism, are susceptible to drying, and are fastidious (growth is inhibited by free fatty acids) (Douglas F. Fix) INTRODUCTION. The genus Neisseria has more than 20 species of Gram-negative bacteria that colonize mucosal surfaces and the oral cavity of humans and many animals (Liu, Tang and Exley 2015).The upper respiratory tract is the most common anatomical site from which Neisseria have been cultured (Barrett and Sneath 1994).Historically, 16S rRNA cloning experiments have found Neisseria species to be.

Neisseria gonorrhoeae - Wikipedi

Neisseria - bacterial genus - microbiology dictionar

Dobrý den, z rodu bakterií neiseria jsou patogenní /tzn. mohou vyvolat u člověka onemocnění/ n. gonorhoe, n . species. Druh neisseria species je nepatogenní a je jím osídlena dutina ústní a horní cesty dýchací. Takže se znepokojovat nemusíte The two most important pathogenic Neisseria species are the Neisseria gonorrhoea and N. meningitidis. Meanwhile, many Neisseria species are commensal. Neisseria is the resident of the human's nasopharynx (5) Neisseria meningitidis Neisseria meningitidis (meningokok) z rodu bakterií Neisseria, které patří mezi Gram-negativní koky, je kosmopolitní bakterie, která vyvolává invazivní meningokoková onemocnění (IMO). Přenáší se vzdušnou kapénkovou cestou Application of the CDS to Neisseria sp. 6.1. Preliminary Testing by the Routine Laboratory. Please note: Section 6.1 is intended to encompass the preliminary testing of Neisseria species by routine diagnostic laboratories.Those laboratories that need to carry out more detailed examinations on either Neisseria meningitidis or Neisseria gonorrhoeae should consult section 6.2 on Neisseria. Parent taxon: Neisseria Trevisan 1885 (Approved Lists 1980) Assigned by: Han XY, Hong T, Falsen E. Neisseria bacilliformis sp. nov. isolated from human infections.J Clin Microbiol 2006; 44:474-479

Neisseria - microbewik

Neisseria species may be misidentified as N. meningitidis in acid detection tests. Supplemental tests may be used to differentiate between them. Table 2. Differential characteristics of Neisseria spp. which produce acid from glucose and maltose Neisseria meningitidis (též meningococcus, meningokok) je gramnegativní diplokokální bakterie, původce jednoho typu meningitidy. Infikuje jen člověka, neexistují žádné jiné přirozené rezervoáry. Meningitida tohoto typu je také jedinou, která vyvolává epidemie.. Neisseria meningitidis může obývat u některých lidí nosohltan a nevyvolávat žádné příznaky onemocnění

Neisseria species články a rady. Informace a články o tématu Neisseria species. Praktické tipy o zdraví, nemoci a Neisseria species. Podrobné informace a praktické tipy ve článcích o Neisseria species. Překonejte všechny zdravotní obtíže s Neisseria species a buďte opět fit This is free video of 4.1 - Neisseria species overview from Sketchy Microbiology | freemedtub

Neisseria gonorrhoeae and Neisseria meningitidis are closely related organisms that cause the sexually transmitted infection gonorrhea and serious bacterial meningitis and septicemia, respectively. Both species possess multiple mechanisms to alter the expression of surface-exposed proteins through the processes o PATHOGENICITY/TOXICITY: Neisseria spp. are part of the commensal flora of mucosal membranes of humans and some animals, and are generally considered non-pathogenic except for N. gonorrhoea and N. meningitidis 1

5. Select samples of possible Neisseria species, and prepare air-dried, heat-fixed smears for Gram staining. Small gram-negative diplococci should be observed. # Draw labeled representations in the Results section. # If transfers to agar slants are to be made, these should be done immediately after the oxidase reagent has been added, since the reagent will kill the cells in the colonies Figure 1. Left: Neisseria gonorrhoeae Gram stain of pure culture; Right: Neisseria gonorrhoeae Gram stain of a pustular exudate. Neisseria gonorrhoeae Neisseria gonorrhoeae is a Gram-negative coccus, 0.6 to 1.0 µm in diameter, usually seen in pairs with adjacent flattened sides (Figure 1 Left and Fig 2 below). The organism is frequently found. Neisseria is the only pathogenic gram negative cocci (precisely diplococci). Two species of Neisseria causes disease in humans; Neisseria meningitidis and Neisseria gonorrhoeae. Human beings are only known hosts of N.gonorrhoeae

Chapter 40 Neisseria and Moraxella catarrhalis Objectives 1. Identify the clinical specimens or sources for the isolation of pathogenic Neisseria spp. 2. List the Neisseria species considered normal flora and the sites where they colonize the human body. 3. Explain the routes of transmission for the organisms discussed in this chapter; include the clinical relevance of asymptomatic carriers Neisseria sicca is a member of the family Neisseriaceae. It is a normal inhabitant of the nasopharynx and is rarely pathogenic. It is a normal inhabitant of the nasopharynx and is rarely pathogenic. A search of the literature reveals only a single case of meningitis and septicemia due to this agent Neisseria gonorrhoeae: Neisseria meningitidis: 1: Referred as: Referred to as gonococcus. Referred to as meningococcus. 2: Agents: N. gonorrhoeae is the agent of gonorrhoea. N. meningitidis is a major cause of cerebrospinal meningitis. 3: Vaccine Development: No: Serogroup A, B, C, Y and W-135 meningococcal infections can be prevented by vaccines. 4: Colony Morpholog 2) Les espèces du genre Neisseria strictement animales comprennent: N. canis, N. weaveri (chiens), N. denitrificans (cobayes), N. macacae (singes rhésus), N. dentiae (vaches) et N. iguanae (lézards) Note de bas de page 1 , Note de bas de page 2

Neisseria models of infection and persistence in the upper

Neisseria gonorrhoeae, also known as gonococcus, is a species of Gram-negative coffee bean-shaped diplococci that typically appear in pairs with the opposing sides flattened. Bacteria are responsible for the sexually transmitted disease gonorrhea Neisseria macacae is a Neisseria species that was discovered in the oral cavity of monkeys in 1983. In humans, it has been isolated from the upper respiratory tract of neutropenic patients. Human infections of N. macacae are extremely rare

Neisseria & Moraxella - Microbiology Clinical Laboratory

  1. MORPHOLOGY OF NEISSERIA MENINGITIDIS (MENINGOCOCCUS). Shape - Neisseria meningitidis is an oval or spherical (coccus) shape bacterium with the adjacent side flattened.. Size - The size of Neisseria meningitidis is about 0.6 µm - 0.8 µm (micrometer).. Arrangement Of Cells - Neisseria meningitidis is arranged in pairs (diplococci), with the adjacent side flattened and they are usually.
  2. Learn neisseria with free interactive flashcards. Choose from 500 different sets of neisseria flashcards on Quizlet
  3. Fig 7. A, To differentiate some gram-negative rods from the gram-negative diplococci, the organism can be streaked to a plate and a 10-unit penicillin disk added.After growth, the edge of the zone of inhibition is stained to visualize microscopic morphology. B, The microscopic morphology of Neisseria gonorrhoeae remains gramnegative diplococci using the 10-unit penicillin disk

Neisseria - WikiSkript

Rapid Identification of Neisseria species, using mixed chromogenic substrates. Abstract of the annual meeting of the American Society for Microbiology N. C257, p. 279. 2. D'Amato, R.F., et al. 1978. Rapid identification of Neisseria gonorrhoeae and Neisseria meningitidis by using enzymatic profiles Neisseria species Dobrý den,mám k vám dotaz ohledně mého výsledku z vyšetření-//výtěr z krku-kultivace,citlivost//.Krom jiného se mi ve výsledku objevila Neisseria species...zajímá mě co to je a zda-li se mám znepokojovat,popřípadě jaké dovyšetření doporučujete?Předem velice děkuji za vaši odpověď.S přáním pěkného dne-O.H The three species Neisseria meningitidis, Neisseria gonorrheae, and Neisseria lactamica are often regarded as highly recombining bacteria. N. meningitidis has been considered a paradigmatic case of the semiclonal model or of epidemic clonality, demonstrating occasional bouts of clonal propagation in an otherwise recombining species. In this model, occasional clonality generates linkage disequilibrium in the short term

Neisseria gonorrhoeae - microbewiki

Neisseria - DocCheck Flexiko

Have you had enough chocolate in the last video? If not, our organism for the day deals with chocolate, too ;). Today we will be talking about Neisseria gono.. Description. Neisseria meningitidis is an aerobic, Gram-negative diplococcus that causes meningococcal diseases such as meningococcemia and bacterial meningitis. Meningitis arises upon inflammation of the meninges, which consists of the membrane that envelops and protects the central nervous system Introduction. The genus Neisseria is a large group of β-Proteobacteria that are obligate symbionts of humans and animals. At least eight species of commensal Neisseria colonize human mucosal surfaces , .These sites are also infected by two pathogenic Neisseria: Neisseria meningitidis, which causes epidemics of meningitis and septicemia, and Neisseria gonorrhoeae, a sexually transmitted bacterium Neisseria meningitidis, also called N. meningitidis or just meningococcus, is a gram-negative round bacterium that causes meningitis in humans, as well as life-threatening conditions like sepsis and disseminated intravascular coagulation.. Now, N. meningitidis has a thin peptidoglycan layer, so it doesn't retain the crystal violet dye during Gram staining

Neisseria species - GlobalRP

  1. Neisseria. General Characteristics of Neisseria spp. Aerobic Gram-negative cocci often arranged in pairs (diplococci) with adjacent sides flattened (like coffe beans) Oxidase positive Most catalase positive Nonmotile Acid from oxidation of carbohydrates, not from fermentation Important Human Pathogens Neisseria gonorrhoeae Neisseria meningitidi
  2. Genus: Neisseria Species: N. elongata - N. gonorrhoeae - N. lactamica - N. meningitidis - N. polysacchareaa. Name . Neisseria Trevisan, 1885 References . Neisseria - Taxon details on National Center for Biotechnology Information (NCBI). European Nucleotide Archive; Vernacular name
  3. ent cause of meningitis and the specific agent of.
  4. ately resides in the human nasopharynx . Only the pathogenic neisseriae, N. gonorrhoeae and N. meningitidis , have been shown to undergo pilin antigenic variation ( 43 )
  5. Neisseria gonorrhoeae and Neisseria meningitidis are closely related organisms that cause the sexually transmitted infection gonorrhea and serious bacterial meningitis and septicemia, respectively. Both species possess multiple mechanisms to alter the expression of surface-exposed proteins through the processes of phase and antigenic variation
  6. Taxonomy - Neisseria meningitidis (SPECIES) ))) Map to UniProtKB (57,339) Reviewed (1,877) Micrococcus meningitidis cerebrospinalis Albrecht and Ghon 1901 ›Micrococcus meningitidis Albrecht and Ghon 1903 ›Neisseria weichselbaumii Trevisan 1889 More.
  7. Neisseria species exhibit different arrangements of cysteine biosynthesis genes and have slight differences in how they assimilate sulfate and synthesize cysteine, while, most interestingly, N. gonorrhoeae by virtue of a genome deletion, lacks the ability to reduce sulfate to bisulfide for incorporation into cysteine, and as such uses the.

Neisseria spp. (other than N. gonorrhoeae and N ..

Neisseria spp. produce acid from carbohydrates by oxidation, not fermentation. Chemoorganotrophic. Exotoxins are not produced. Some species are saccharolytic. Inhabitants of the mucous membranes of mammals. Some species are primary pathogens of humans. The genus Neisseria belongs to the family Neisseriaceae of the Betaproteobacteria Druh neisseria species je nepatogenní a je jím osídlena dutina ústní. Bakterie e-coli,enterococcus faecalis a streptococcus species. | Dotaz od: ILona. Podobné Témata jako Neisseria species UK Standards for Microbiology Investigations ID 6: identification of Neisseria species. Help us improve GOV.UK. To help us improve GOV.UK, we'd like to know more about your visit today

Video: Neisseria species uLékaře

  1. ポイント. 咽頭や口腔内などの常在してるナイセリア属.SiccaとはDryを意味するラテン語である.最初の同定は1908年に遡り,かつドイツ語のため,管理人も元文献のタイトルを見つけるのが精一杯であった.[1
  2. Neisseria is the only pathogenic gram negative cocci (precisely diplococci). Two species of Neisseria causes disease in humans; Neisseria meningitidis and Neisseria gonorrhoeae. Human beings are only known hosts of N.gonorrhoeae. Neisseria gonorrhoeae (often called gonococcus) cause
  3. › cellular organisms › Bacteria › Proteobacteria › Betaproteobacteria › Neisseriales › Neisseriaceae › Neisseria Strains i › ATCC 33084 / F62 / M-1914 ,ATCC 33084, F62 › CDC 50 › CH811 › CH95 ,CH-95 › FA19 More
  4. The test is used as an aid for the differentiation of Neisseria, Moraxella, Campylobacter and Pasteurella species (oxidase positive). It is also used to differentiate pseudomonads from related species. Procedure of Oxidase Test. There are many method variations to the oxidase test
  5. Non-pathogenic species morphologically resembling Neisseria are found in the normal flora of the oropharynx but can be differentiated from the pathogenic Neisseria readily. These occasionally cause opportunistic human disease (including pneumonia). Return to the Bacteriology Section of Microbiology and Immunology On-lin
  6. Evidence-Based Clinical Decision Support at the Point of.

Characteristics of Neisseria Species Colonized in the

  1. 11 α-streptococcus(αレンサ球菌)、Neisseria sp.(ナイセリア):常在細菌です。病原性はありません。 (当院でお渡ししておりますパンフレットの部分抜粋です
  2. ed which of the genes so far identified in the genome sequences of the pathogens are also present in this non-pathogenic related species
  3. Neisseria gonorrhoeae, also called Gonococcus which causes the sexually transmitted disease(STD) gonorrhoea. First described by Albert Ludwig Sigesmund Neisser in 1879 in gonorrheal pus. It resembles meningococci very closely in many properties. Colony characteristics of Neisseria gonorrhoeae on 5% sheep blood agar (BAP) are as follows-Small; Roun
  4. The pathogenic Neisseria consists of the species Neisseria gonorrhoeae and Neisseria meningitidis, both of which are Gram-negative diplococci and exclusive human pathogens.Neisseria gonorrhoeae is the causative agent of gonorrhoeae and is transmitted via sexual contact and principally infects the mucosal surfaces of the cervix in women and the urethra in men
  5. ant in Europe, North America and Australia
Neisseria lactamica - Gonorrhea - STD Information from CDC

Neisseria meningitidis - WikiSkript

The Neisseriae are Gram negative diplococci Pathogens are:- N.Meningitidis N.Gonorrhoeae. 3. Neisseria Meningitidis General characteristics • Gram-negative, bean-shaped, diplococci • Do not possess flagella or spores • Capsulated and possess pili Species ID; About us; Updates; Home > Organisms > Neisseria spp. > Neisseria isolates Neisseria isolates database. Query database. Search database Browse, search by any criteria, or enter list of attributes. Search by combinations of loci This can include partial matches to find related isolates Neisseria gonorrhoeae (Gonococcus) N. gonorrhoeae causes the sexually transmitted disease gonorrhoea. first described by Neisser in 1879 in gonorrheal pus. resembles meningococci very closely in many properties Yeast species, normal flora in the anogenital area and pharynx, grow on most media that support N. gonorrhoeae. Nystatin was used in the first modification of Thayer- Martin medium [51] and it has been used in gonorrhea selective media for the last 12 years. During this time, the effectiveness of nystatin was neither demonstrated nor questioned Pathogenic Neisseria Species Virulence Factors Lipooligosaccharide (LOS) or endotoxin lipid A moiety and core Los that differentiates it from the lipopolysaccharide found in most gram-negative bacilli and is loosely attached to the underling peptidoglca

Neisseria meningitidis and N. gonorrhoeae are closely related pathogenic bacteria. To compare their population genetics, we compiled a dataset of 1,145 genes found across 20 N. meningitidis and 15 N. gonorrhoeae genomes. We find that N. meningitidis is seven-times more diverse than N. gonorrhoeae in their combined core genome. Both species have acquired the majority of their diversity by. Neisseria species are gram-negative cocci that are oxidase positive. All 3 species oxidase + N. meningitidis in blood. Gram stain: The Gram stain, is a laboratory staining technique that distinguishes between two groups of bacteria that have differences in the structure of their cell walls. Standard bacterial taxonomy makes a distinction. Neisseria cinerea is a non-pathogenic bacterium that has been isolated from numerous infections including acute meningitis; and the organism is known to colonize the oropharynx and the genital tract. Neisseria subflava is a common inhabitant found in the human upper respiratory tract as a normal flora. It is considered non-pathogenic but the organism can cause postoperative meningitis in rare cases Background: Non-meningococcal, non-gonococcal Neisseria spp. are typically commensal and rarely cause invasive disease. Eculizumab is a terminal complement inhibitor that increases susceptibility to meningococcal disease, but data on disease caused by typically-commensal Neisseria spp. are lacking The clinically important Neisseria species (Neisseria gonorrhoeae, Neisseria meningitidis, Neisseria lactamica and Neisseria cinerea) are relatively easy to identify from the non-pathogenic..

6. Neisseria Species The CDS Antibiotic Susceptibility Tes

  1. MORPHOLOGY OF NEISSERIA GONORRHOEAE (GONOCOCCUS) Shape - Neisseria gonorrhoeae is an oval or spherical (coccus) shape bacterium with the adjacent side Concave.. Size - The size of Neisseria gonorrhoeae is about 0.6 - 1.0 µm (micrometer) in diameter.. Arrangement Of Cells - Neisseria gonorrhoeae is arranged in singly or in pairs (diplococci), with the adjacent side Concave and they are.
  2. Species of the family Neisseriaceae, genus Neisseria, are discussed in this chapter, along with family Moraxellaceae, species Moraxella catarrhalis, because of their biochemical and morphologic similarities. The organisms are all oxidase-positive, gram-negative diplococci that do not elongate when exposed to subinhibitory concentrations of.
  3. Neisseria sicca/subflava is a known commensal bacterium of the upper respiratory tract and has rarely been found to cause meningitis, endocarditis, or bacteremia (1,2).There is limited literature describing the clinical course and optimal management of iatrogenic meningitis caused by N. sicca/subflava.Infections of the central nervous system caused by this organism occur rarely; most reported.
  4. Neisseria species are extremely well-adapted to their mammalian hosts and they display unique phenotypes that account for their ability to thrive within niche-specific conditions. The closely related species N. gonorrhoeae and N. meningitidis are the only two species of the genus recognized as strict human pathogens, causing the sexually transmitted disease gonorrhea and meningitis and sepsis, respectively
Meningococcus | bacteria species | Britannica

Species: Neisseria bacilliformis - LPS

Neisseria gonorrhoeae, also known as gonococcus, is a species of Gram-negative coffee bean- shaped diplococci that typically appear in pairs with the opposing sides flattened. Neisseria meningitidis is a Gram-negative, either an encapsulated or unencapsulated, aerobic diplococcus with a kidney or coffee-bean shape Neisseria weaveri Holmes et al. 1993 The genome sequences of two strains (LMG 5135T and ATCC 51223T) were determined and deposited into GenBank (accession numbers AFWQ00000000 and AFWR00000000), respectively The other species of Neisseria such as N. lactamica and N. cinerea are generally considered commensals, but have been implicated as causes of infection in patients who are immunocompromised. More recent species to the genus Neisseria are N. oralis, N. shayeganii, N. wadsworthii, N. zoodegmatis and N. animaloris isolated from human clinical samples Neisseria species include N. gonorrhoeae, N. meningitidis, which can asymptomatically colonize the human nasopharynx and also cause deadly meningococcal meningitis, several nonpathogenic species that are components of the normal human oropharyngeal microbiome, and nonhuman isolates (Liu et al., 2015)

Last Updated on January 13, 2020 by Sagar Aryal. Habitat and Morphology of Neisseria gonorrhoeae. Habitat of Neisseria gonorrhoeae. Human is only the natural host. Found in human urogenital tract. Rectal carriage in healthy individuals Information on Neisseria bacteria species What is Neisseria lactamica? It is a species of bacteria that lives in part of the throat known as the nasopharynx in young children and adults. It is part of the normal population of bacteria found in healthy people Neisseria species are extremely well-adapted to their mammalian hosts and they display unique phenotypes that account for their ability to thrive within niche-specific conditions. The closely related species N. gonorrhoeae and N. meningitidis are the only two species of the genus recognized as strict human pathogens, causing the sexually.

NeisseriaLife: Pathogenic speciesDiplococcus mucosus - Gonorrhea - STD Information from CDCAcinetobacterMystery Bug 9USMLE Notes - Sketchy Micro To Do List: • 01 - Gram

Here, the same seven locus Neisseria scheme was used to characterize a diverse collection of N. gonorrhoeae isolates to investigate whether this method would allow differentiation among isolates, and to distinguish these three species. A total of 149 gonococcal isolates were typed and submitted to the Neisseria MLST database Neisseria species3 Neisseria species are obligate human pathogens with no other natural host. They are Gram-negative cocci, 0.6 - 1.0 µm in diameter, occurring singly but more often in pairs with adjacent sides flattened. They are non-motile and flagella are absent. Some species produce a greenish-yellow caretenoi While Neisseria species are gram negative, occasionally a tendency to withstand decolorization. Culture characteristics. the following information is not yet verified. Obligate aerobic 5% CO2 improves the growth N. sicca may produce a yellowish pigment The colonies are large, ≤ 3 mm, smooth, with entire edges and can form dry, wrinkled, and. Neisseria gonorrhoeae produces hydroxyprolineaminopeptidase which hydrolyses proline napthylamide, the free napthylamide produces a red colour on addition of the PEP reagent. Instructions For Use (En) Material safety Data Sheet (En) PHE, Standards for Microbiology Investigations: SMI ID 6: identification of Neisseria species

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