Transfer of Some Saccharolytic Moraxella Species to Kingella Henriksen and Bovre 1976, with Descriptions of Kingella indologenes sp. nov. and Kingella denitrificans sp. nov.

Snell, J. J. S.; Lapage, S. P.

doi:10.1099/00207713-26-4-451

Cited by 62 publications

(28 citation statements)

References 13 publications

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“…Although endometritis caused by other organisms such as Klebsiella species and streptococci has been recognised for many years, the condition observed clinically and associated with the bacterium described here was reported in 1977 for the first time in the United Bordetella, 61-68 per cent GC (Pittman, 1974); Kingella, 47-55 per cent GC (Snell and Lapage, 1976); this is a new genus, proposed by Henriksen and Bovre (1976) for catalase negative, oxidase positive, weakly saccharolytic organisms previously contained in the genus Moraxella; Eikenella, 56 per cent GC (Snell and Lapage, 1976); Cardiobacterium, 59-60 per cent G C (Snell and Lapage, 1976) ; Branhamella, 42-47 per cent GC (Snell and Lapage, 1976).…”

Section: Discussionmentioning

confidence: 83%

The Causative Organism of Contagious Equine Metritis 1977: Proposal for a New Species to be known as Haemophilus equigenitalis

Taylor¹,

Rosenthal²,

Brown³

et al. 1978

Equine Veterinary Journal

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SUMMARY The aetiological agent of contagious equine metritis (CEM) has been investigated bacteriologically in a wide range of cultural and conventional biochemical tests, in the electron microscope, for DNA base composition (36.1 per cent GC), for susceptibility to various antimicrobial agents and antigenically by means of tube and slide agglutination tests. The organism is a fastidious, Gramnegative, non acid‐fast coccobacillus which in biochemical tests is very unreactive. In conventional tests, only the oxidase, catalase and phosphatase tests were positive. Dependance on neither X nor V factors could be demonstrated, but some stimulation of growth by X factor was observed. The organism could not be identified with any known species and even allocation to an appropriate genus was difficult. Rather than create a new genus of only one species defined mainly on negative characters, we propose the organism as a new species of the genus Haemophilus: H. equigenitalis, type strain NCTC 11184 (61717/77). RÉSUMÉ L'agent étiologique de la métrite équine contagieuse 1977 (CEM) a été l'objet de nombreuses études biochimiques; on l'a étudié au microscope électronique: on a déterminé sa composition en ADN (36,1 % GC), on a précisé sa sensibilitéà de nombreux agents anti‐microbiens, on a apprécié son comportement antigénique par des tests d'agglutination en tube et sur lame. L'organisme est un cocco bacille Gram négatif difficile à isoler et dont le comportement biochimique est peu évocateur. Pour les épreuves habituelles seuls les tests à la catalase, à l'oxydase et à la phosphatase ont été positifs. On n'a pu établir sa dépendance pour les facteurs X et V bien qu'une certaine stimulation de la croissance par le facteur X aie pu être constatée. Cet organisme n'a pu être identifiéà aucune espèce connue et même son classement dans un genre précis s'est révélé difficile. Plutôt que de créer un genre nouveau pour cette espèce isolée définie surtout par des caractères négatifs nous proposons que cette bactérie soit désignée comme une espèce nouvelle, Haemophilus equigénitalis, type souche NCTC 11184 (61717/77). ZUSAMMENFASSUNG Der aetiologisch für die ansteckende Stutenmetritis (CEM; contagiöse, equine Metritis) verantwortliche Keim wurde bakteriologisch mit einer Vielzahl kultureller und biochemischer Tests untersucht; daneben wurde er elektronenmikroskopisch studiert, seine DNS‐Zusam‐mensetzung eruiert (36.1% GC), seine Empfindlichkeit gegenüber verschiedenen antimikrobiellen Stoffen getestet und seine antigenetischen Eigenschaften in verschiedenen Agglutinationstests abgeklärt. Der Keim ist ein anspruchsvoller, gramnegativer und biochemisch sehr wenig reaktiver Coccobacillus. Unter den üblichen Tests fielen nur Oxydase, Katalase und Phosphatase positiv aus. Weder von X‐ noch V‐Faktoren besteht eine Abhängigkeit, obschon eine gewisse Wachstumsstimulation durch den X‐Faktor zu beobachten war. Der Organismus konnte mit keiner bekannten Spezies identifiziert werden und sogar seine Zuteilung zu einem Genus erwies sich als schwierig...

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Section: Discussionmentioning

confidence: 83%

The Causative Organism of Contagious Equine Metritis 1977: Proposal for a New Species to be known as Haemophilus equigenitalis

Taylor¹,

Rosenthal²,

Brown³

et al. 1978

Equine Veterinary Journal

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“…Moraxella' Bijsterveld (Bijsterveld, 1970; Bsvre et a/., 1974~) is now named Kingella indologenes (Snell & Lapage, 1976), and the tentatively named M. urethralis (Lautrop, Bsvre & Frederiksen, 1970) forms a separate taxonomic group. Most of the test strains have been studied in earlier taxonomic investigations (Barvre et a/.…”

Section: '4mentioning

confidence: 99%

Occurrence and Patterns of Waxes in Neisseriaceae

Bryn¹,

Jantzen²,

Bøvre

1977

Journal of General Microbiology

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Forty-five strains classified in the family Neisseriaceae were analysed for wax esters by gas-liquid chromatography. The amounts and types of waxes varied between the taxa. Waxes were not detected in 16 strains of 'true neisseriae' (genus Neisseria) or in two strains of Kingella, but they were found in all 'false neisseriae', in all species of Moraxella except Moraxellaphenylpyrouvica, in five out of 10 strains of Acinetobacter, and in all strains of a group of psychrophilic, oxidase-positive organisms. The chain lengths of the wax esters ranged from Cz4 to C4*, with CS6 predominating. In all taxa, esters with even numbers of carbon atoms constituted 70 to roo % of the total. Saturated, mono-unsaturated and diunsaturated waxes were found. Acinetobacter strains were characterized by large amounts (30 to 98 %) of di-unsaturated wax esters; such waxes did not exceed 8 % in the 'false neisseriae ' or Moraxella spp. Waxes of strains belonging to the psychrophilic, oxidasepositive group generally resembled those found in Moraxella. Wax esters with odd numbers of carbon atoms were abundant in M. lacunata (29 %), M. atlantae (15 %) and in the psychrophilic group (19 to 28 %); long-chain esters (C40 or above) were characteristic of M . atlantae (30 %) and one strain of M . osloensis (26 %).

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“…N. elongata and K. denitrificans are non‐motile Gram‐negative coccobacilli indistinguishable from each other on microscopy. After incubation for 24 h, both taxa grew on blood and chocolate agar without CO 2 , but not on bromothymol blue lactose agar. After incubation for 24 h on blood agar, N. elongata colonies were mucoid yellowish‐white with a diameter of 1.5–3 mm, while colonies of K. denitrificans were non‐mucoid with a diameter of 0.5–0.75 mm.…”

Section: Resultsmentioning

confidence: 99%

“…N. elongata subsp. nitroreducens and K. denitrificans are Gram‐negative coccobacilli that may be difficult to differentiate from each other [4,5]. This was highlighted in our reference laboratory, where we, within the last few years, have received four blood culture isolates of N. elongata subsp.…”

Section: Introductionmentioning

confidence: 99%

Two cases of endocarditis caused by Neisseria elongata subspecies nitroreducens and phenotypic differentiation from Kingella denitrificans

Lundgren

Teglbjærg

Slotsbjerg

et al. 1998

Clinical Microbiology and Infection

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Objective: To describe two cases of endocarditis caused by Neisseria elongata subsp. nitroreducens, and present some biochemical characteristics not previously described as useful for differentiating this taxon from Kingella denitrificans.Methods: Biochemical and antimicrobial susceptibility tests were carried out on four field strains and three reference strains of N. eiongata subsp. nitroreducens, the type strains of N. eiongata subsp. elongata and N. elongata subsp.glycolytica, and five reference strains of K. denitrificans.Results: Phenotypic characterization confirmed the identification of N. eiongata subsp. nitroreducens in two cases of endocarditis in patients with pre-existing heart damage. Apart from the previously reported differential characteristics between N. elongata subsp. nitroreducens and K. denitrificans. N. elongata subsp. nitroreducens was found to have large mucoid colonies, a positive result of the phenylalanine test, acid production from ethanol and susceptibility to polyrnyxin, in contrast to K. denitrificans. Conclusion:When blood cultures are positive for N. elongata subsp. nitroreducens, endocarditis should be suspected.Characteristics useful for differentiating N. elongata subsp. nitroreducens from K. denitrificans are larger colonies, reduction of nitrate and nitrite without gas formation, a positive result of the phenylalanine test, production of acid from ethanol and polymyxin susceptibility.

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Transfer of Some Saccharolytic Moraxella Species to Kingella Henriksen and Bovre 1976, with Descriptions of Kingella indologenes sp. nov. and Kingella denitrificans sp. nov.

Cited by 62 publications

References 13 publications

The Causative Organism of Contagious Equine Metritis 1977: Proposal for a New Species to be known as Haemophilus equigenitalis

The Causative Organism of Contagious Equine Metritis 1977: Proposal for a New Species to be known as Haemophilus equigenitalis

Occurrence and Patterns of Waxes in Neisseriaceae

Two cases of endocarditis caused by Neisseria elongata subspecies nitroreducens and phenotypic differentiation from Kingella denitrificans

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