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'''''Campylobacter concisus''''' è una specie di battere [[Batteri Gram-negativi|gram-negativo]] dai requisiti nutrizionali particolarmente definiti: sono mesofili che crescono tanto in condizioni [[Anaerobiosi|anaerobiche]] come [[Aerobiosi|aerobiche]] e crescono meglio ad alte concentrazioni di idrogeno<ref>{{Cite journal|title=Examination of the Anaerobic Growth of Campylobacter concisus Strains|last=Lee|first=Hoyul|journal=International Journal of Microbiology|volume=2014|pages=476047|pmid=25214843|year=2014|doi=10.1155/2014/476047|pmc=4158115}}</ref>. Sono mobili, con presenza di [[Flagello (biologia)|flagelli]] unipolari o bipolari. Hanno una forma a cavatappi/spirale e risultano essere [[ossidasi]] negativi<ref>{{cite journal|last1=Tanner|first1=A. C. R.|last2=Badger|first2=S.|last3=Lai|first3=C.-H|last4=Listgarten|first4=M. A.|last5=Visconti|first5=R. A.|last6=Socransky|first6=S. S.|title=Wolinella gen. nov., Wolinella succinogenes (Vibrio succinogenes Wolin et al.) comb. nov., and Description of Bacteroides gracilis sp. nov., Wolinella recta sp. nov., Campylobacter concisus sp. nov., and Eikenella corrodens from Humans with Periodontal Disease|journal=International Journal of Systematic and Evolutionary Microbiology|date=1981|volume=31|issue=4|pages=432–45|doi=10.1099/00207713-31-4-432|doi-access=free}}</ref><ref>{{cite book|author1=P. Vandamme|author2=F. E. Dewhirst|author3=B. J. Paster|author4=S. L. W. On|editor1-last=Garrity|editor1-first=G.|editor2-last=Krieg|editor2-first=N. R.|editor3-last=Staley|editor3-first=J. T.|editor4-last=Brenner|editor4-first=D. J.|title=Bergey's Manual of Systematic Bacteriology|date=2005|publisher=Springer-Verlag New York|location=NY, USA|isbn=978-0-387-29298-4|pages=1147–1160|edition=2nd|chapter=Genus I. Campylobacter}}</ref><ref name=Sherris>{{cite book | editor = Ryan KJ | editor2 = Ray CG | title = Sherris Medical Microbiology | edition = 4th | pages = 378&ndash;80 | publisher = McGraw Hill | year = 2004 | isbn = 978-0-8385-8529-0 }}</ref>.


È stato descritto per la prima volta da ''Tanner et al''. nel [[1981]].

Malgrado siano una specie colonizzatrice della [[Bocca|cavità orale]] umana, non è raro trovarne colonie anche nell'[[apparato digerente]], in particolare si è dimostrato come siano particolarmente presenti nei pazienti affetti da IBD<ref>{{Cite journal|last=Zhang|first=Li|last2=Budiman|first2=Vanna|last3=Day|first3=Andrew S.|last4=Mitchell|first4=Hazel|last5=Lemberg|first5=Daniel A.|last6=Riordan|first6=Stephen M.|last7=Grimm|first7=Michael|last8=Leach|first8=Steven T.|last9=Ismail|first9=Yazan|date=2010-08-01|title=Isolation and detection of Campylobacter concisus from saliva of healthy individuals and patients with inflammatory bowel disease|journal=Journal of Clinical Microbiology|volume=48|issue=8|pages=2965–2967|doi=10.1128/JCM.02391-09|issn=1098-660X|pmc=2916630|pmid=20519479}}</ref> In particular, several studies have reported higher intestinal prevalence of ''C. concisus'' in patients with IBD compared to healthy controls,<ref>{{Cite journal|last=Mahendran|first=Vikneswari|last2=Riordan|first2=Stephen M.|last3=Grimm|first3=Michael C.|last4=Tran|first4=Thi Anh Tuyet|last5=Major|first5=Joelene|last6=Kaakoush|first6=Nadeem O.|last7=Mitchell|first7=Hazel|last8=Zhang|first8=Li|date=2011-09-23|title=Prevalence of Campylobacter Species in Adult Crohn's Disease and the Preferential Colonization Sites of Campylobacter Species in the Human Intestine|journal=PLOS One|volume=6|issue=9|pages=e25417|doi=10.1371/journal.pone.0025417|issn=1932-6203|pmc=3179513|pmid=21966525}}</ref><ref>{{Cite journal|last=Zhang|first=Li|last2=Man|first2=Si Ming|last3=Day|first3=Andrew S.|last4=Leach|first4=Steven T.|last5=Lemberg|first5=Daniel A.|last6=Dutt|first6=Shoma|last7=Stormon|first7=Michael|last8=Otley|first8=Anthony|last9=O'Loughlin|first9=Edward V.|date=2009-02-01|title=Detection and Isolation of Campylobacter Species Other than C. jejuni from Children with Crohn's Disease|journal=Journal of Clinical Microbiology|language=en|volume=47|issue=2|pages=453–455|doi=10.1128/jcm.01949-08|issn=0095-1137|pmid=19052183|pmc=2643684}}</ref>, il che ha fatto pensare a una possibile implicazione di questi batteri nell'induzione della [[malattia di Crohn]]. Recentemente, a supporto di questa teoria, si è visto come l'inserzione ''csep1-6bpi'' nel genoma di questo batterio e il [[plasmide]] ''pSma1'' possano essere associati all'apparizione di ulcere molto simili a quelle presentate dai pazienti affetti da questa malattia<ref>{{cite journal|last1=Fang|first1=Liu|last2=Rena|first2=Ma|last3=Chin Yen Alfred|first3=Tay|last4=Sophie|first4=Octavia|last5=Ruiting|first5=Lan|last6=Heung Kit Leslie|first6=Chung|last7=Stephen M|first7=Riordan|last8=Michael C|first8=Grimm|last9=Rupert W|first9=Leong|last10=Mark M|first10=Tanaka|title=Genomic analysis of oral ''Campylobacter concisus'' strains identified a potential bacterial molecular marker associated with active Crohn's disease|journal=Emerg Microbes Infect|volume=7|issue=1|pages=64|doi=10.1038/s41426-018-0065-6|pmid=29636463|pmc=5893538|year=2018}}</ref><ref>{{cite journal|last1=Fang|first1=Liu|last2=Siying|first2=Chen|last3=Laurence Don Wai|first3=Luu|last4=Seul A|first4=Lee|last5=Alfred Chin Yen|first5=Tay|last6=Ruochen|first6=Wu|last7=Stephen M|first7=Riordan|last8=Ruiting|first8=Lan|last9=Lu|first9=Liu|last10=Li|first10=Zhang|title=Analysis of complete Campylobacter concisus genomes identifies genomospecies features, secretion systems and novel plasmids and their association with severe ulcerative colitis|journal=Microbial Genomics|volume=6|issue=11|doi=10.1099/mgen.0.000457|pmid= 33111662|year=2020|doi-access=free}}</ref>.

Alcuni studi suggeriscono che ''C.concisus'' possa essere composto da due sottospecie [[Fenotipo|fenotipicamente]] identiche ma [[Genotipo|genotipicamente]] diverse: le analisi di AFLP (''analysis of amplified fragment length polymorphisms'') hanno indicato la possibile presenza di due diverse genomospecie identificate come GS1 e GS2<ref>{{Cite journal|last=Aabenhus|first=Rune|last2=On|first2=Stephen L. W.|last3=Siemer|first3=Berit L.|last4=Permin|first4=Henrik|last5=Andersen|first5=Leif P.|date=2005-10-01|title=Delineation of Campylobacter concisus Genomospecies by Amplified Fragment Length Polymorphism Analysis and Correlation of Results with Clinical Data|journal=Journal of Clinical Microbiology|language=en|volume=43|issue=10|pages=5091–5096|doi=10.1128/JCM.43.10.5091-5096.2005|issn=0095-1137|pmc=1248439|pmid=16207968}}</ref><ref>{{Cite journal|last=Kalischuk|first=Lisa D.|last2=Inglis|first2=G. Douglas|date=2011-01-01|title=Comparative genotypic and pathogenic examination of Campylobacter concisusisolates from diarrheic and non-diarrheic humans|journal=BMC Microbiology|volume=11|pages=53|doi=10.1186/1471-2180-11-53|issn=1471-2180|pmc=3068073|pmid=21406111}}</ref><ref>{{Cite journal|last=Miller|first=William G.|last2=Chapman|first2=Mary H.|last3=Yee|first3=Emma|last4=On|first4=Stephen L. W.|last5=McNulty|first5=Desmond K.|last6=Lastovica|first6=Albert J.|last7=Carroll|first7=Anne M.|last8=McNamara|first8=Eleanor B.|last9=Duffy|first9=Geraldine|date=2012-01-01|title=Multilocus Sequence Typing Methods for the Emerging Campylobacter Species C. hyointestinalis, C. lanienae, C. sputorum, C. concisus, and C. curvus|journal=Frontiers in Cellular and Infection Microbiology|language=English|volume=2|pages=45|doi=10.3389/fcimb.2012.00045|issn=2235-2988|pmc=3417633|pmid=22919636}}</ref><ref>{{Cite journal|last=Mahendran|first=Vikneswari|last2=Octavia|first2=Sophie|last3=Demirbas|first3=Omer Faruk|last4=Sabrina|first4=Sheryl|last5=Ma|first5=Rena|last6=Lan|first6=Ruiting|last7=Riordan|first7=Stephen M.|last8=Grimm|first8=Michael C.|last9=Zhang|first9=Li|date=2015-01-01|title=Delineation of genetic relatedness and population structure of oral and enteric Campylobacter concisus strains by analysis of housekeeping genes|journal=Microbiology|volume=161|issue=8|pages=1600–1612|doi=10.1099/mic.0.000112|pmid=26002953|doi-access=free}}</ref><ref>{{Cite journal|last=Engberg|first=J.|last2=Bang|first2=D.D.|last3=Aabenhus|first3=R.|last4=Aarestrup|first4=F.M.|last5=Fussing|first5=V.|last6=Gerner-Smidt|first6=P.|date=2005-04-01|title=Campylobacter concisus: an evaluation of certain phenotypic and genotypic characteristics|journal=Clinical Microbiology and Infection|language=English|volume=11|issue=4|pages=288–295|doi=10.1111/j.1469-0691.2005.01111.x|pmid=15760425|issn=1198-743X|doi-access=free}}</ref><ref>{{Cite journal|last=Chung|first=Heung Kit Leslie|last2=Tay|first2=Alfred|last3=Octavia|first3=Sophie|last4=Chen|first4=Jieqiong|last5=Liu|first5=Fang|last6=Ma|first6=Rena|last7=Lan|first7=Ruiting|last8=Riordan|first8=Stephen M|last9=Grimm|first9=Michael C.|date=2016-12-02|title=Genome analysis of Campylobacter concisus strains from patients with inflammatory bowel disease and gastroenteritis provides new insights into pathogenicity|journal=Scientific Reports|language=en|volume=6|issue=1|pages=38442|doi=10.1038/srep38442|issn=2045-2322|pmc=5133609|pmid=27910936}}</ref> The two genomospecies appear to harbor different levels of enteric pathogenic potential, with oral ''C. concisus'' strains that were invasive to human epithelial cell line (Caco2) found only in Genomospecies-2 (GS2).<ref>{{Cite journal|last=Ismail|first=Yazan|last2=Mahendran|first2=Vikneswari|last3=Octavia|first3=Sophie|last4=Day|first4=Andrew S.|last5=Riordan|first5=Stephen M.|last6=Grimm|first6=Michael C.|last7=Lan|first7=Ruiting|last8=Lemberg|first8=Daniel|last9=Tran|first9=Thi Anh Tuyet|date=2012-05-30|title=Investigation of the Enteric Pathogenic Potential of Oral Campylobacter concisus Strains Isolated from Patients with Inflammatory Bowel Disease|journal=PLOS One|volume=7|issue=5|pages=e38217|doi=10.1371/journal.pone.0038217|issn=1932-6203|pmc=3364211|pmid=22666490}}</ref><ref>{{Cite journal|last=Mahendran|first=Vikneswari|last2=Liu|first2=Fang|last3=Riordan|first3=Stephen M.|last4=Grimm|first4=Michael C.|last5=Tanaka|first5=Mark M.|last6=Zhang|first6=Li|date=2016-01-01|title=Examination of the effects of Campylobacter concisus zonula occludens toxin on intestinal epithelial cells and macrophages|journal=Gut Pathogens|volume=8|pages=18|doi=10.1186/s13099-016-0101-9|issn=1757-4749|pmc=4870807|pmid=27195022}}</ref>
.


== Note ==
== Note ==

Versione delle 23:52, 3 ago 2021

Come leggere il tassoboxProgetto:Forme di vita/Come leggere il tassobox
Come leggere il tassobox
Campylobacter concisus
Immagine di Campylobacter concisus mancante
Classificazione scientifica
DominioProkaryota
RegnoBacteria
PhylumProteobacteria
ClasseEpsilonproteobacteria
OrdineCampylobacterales
FamigliaCampylobacteraceae
Genere'Campylobacter'
Specie''C.concisus''

Campylobacter concisus è una specie di battere gram-negativo dai requisiti nutrizionali particolarmente definiti: sono mesofili che crescono tanto in condizioni anaerobiche come aerobiche e crescono meglio ad alte concentrazioni di idrogeno[1]. Sono mobili, con presenza di flagelli unipolari o bipolari. Hanno una forma a cavatappi/spirale e risultano essere ossidasi negativi[2][3][4].

È stato descritto per la prima volta da Tanner et al. nel 1981.

Malgrado siano una specie colonizzatrice della cavità orale umana, non è raro trovarne colonie anche nell'apparato digerente, in particolare si è dimostrato come siano particolarmente presenti nei pazienti affetti da IBD[5] In particular, several studies have reported higher intestinal prevalence of C. concisus in patients with IBD compared to healthy controls,[6][7], il che ha fatto pensare a una possibile implicazione di questi batteri nell'induzione della malattia di Crohn. Recentemente, a supporto di questa teoria, si è visto come l'inserzione csep1-6bpi nel genoma di questo batterio e il plasmide pSma1 possano essere associati all'apparizione di ulcere molto simili a quelle presentate dai pazienti affetti da questa malattia[8][9].

Alcuni studi suggeriscono che C.concisus possa essere composto da due sottospecie fenotipicamente identiche ma genotipicamente diverse: le analisi di AFLP (analysis of amplified fragment length polymorphisms) hanno indicato la possibile presenza di due diverse genomospecie identificate come GS1 e GS2[10][11][12][13][14][15] The two genomospecies appear to harbor different levels of enteric pathogenic potential, with oral C. concisus strains that were invasive to human epithelial cell line (Caco2) found only in Genomospecies-2 (GS2).[16][17] .

Note

  1. ^ Hoyul Lee, Examination of the Anaerobic Growth of Campylobacter concisus Strains, in International Journal of Microbiology, vol. 2014, 2014, p. 476047, DOI:10.1155/2014/476047.
  2. ^ Wolinella gen. nov., Wolinella succinogenes (Vibrio succinogenes Wolin et al.) comb. nov., and Description of Bacteroides gracilis sp. nov., Wolinella recta sp. nov., Campylobacter concisus sp. nov., and Eikenella corrodens from Humans with Periodontal Disease, in International Journal of Systematic and Evolutionary Microbiology, vol. 31, n. 4, 1981, pp. 432–45, DOI:10.1099/00207713-31-4-432.
  3. ^ Genus I. Campylobacter, in Bergey's Manual of Systematic Bacteriology, 2nd, NY, USA, Springer-Verlag New York, 2005, pp. 1147–1160, ISBN 978-0-387-29298-4.
  4. ^ Ryan KJ (a cura di), Sherris Medical Microbiology, 4th, McGraw Hill, 2004, pp. 378–80, ISBN 978-0-8385-8529-0.
  5. ^ Li Zhang, Isolation and detection of Campylobacter concisus from saliva of healthy individuals and patients with inflammatory bowel disease, in Journal of Clinical Microbiology, vol. 48, n. 8, 1º agosto 2010, pp. 2965–2967, DOI:10.1128/JCM.02391-09.
  6. ^ Vikneswari Mahendran, Prevalence of Campylobacter Species in Adult Crohn's Disease and the Preferential Colonization Sites of Campylobacter Species in the Human Intestine, in PLOS One, vol. 6, n. 9, 23 settembre 2011, pp. e25417, DOI:10.1371/journal.pone.0025417.
  7. ^ (EN) Li Zhang, Detection and Isolation of Campylobacter Species Other than C. jejuni from Children with Crohn's Disease, in Journal of Clinical Microbiology, vol. 47, n. 2, 1º febbraio 2009, pp. 453–455, DOI:10.1128/jcm.01949-08.
  8. ^ Genomic analysis of oral Campylobacter concisus strains identified a potential bacterial molecular marker associated with active Crohn's disease, in Emerg Microbes Infect, vol. 7, n. 1, 2018, p. 64, DOI:10.1038/s41426-018-0065-6.
  9. ^ Analysis of complete Campylobacter concisus genomes identifies genomospecies features, secretion systems and novel plasmids and their association with severe ulcerative colitis, in Microbial Genomics, vol. 6, n. 11, 2020, DOI:10.1099/mgen.0.000457.
  10. ^ (EN) Rune Aabenhus, Delineation of Campylobacter concisus Genomospecies by Amplified Fragment Length Polymorphism Analysis and Correlation of Results with Clinical Data, in Journal of Clinical Microbiology, vol. 43, n. 10, 1º ottobre 2005, pp. 5091–5096, DOI:10.1128/JCM.43.10.5091-5096.2005.
  11. ^ Lisa D. Kalischuk, Comparative genotypic and pathogenic examination of Campylobacter concisusisolates from diarrheic and non-diarrheic humans, in BMC Microbiology, vol. 11, 1º gennaio 2011, p. 53, DOI:10.1186/1471-2180-11-53.
  12. ^ (English) William G. Miller, Multilocus Sequence Typing Methods for the Emerging Campylobacter Species C. hyointestinalis, C. lanienae, C. sputorum, C. concisus, and C. curvus, in Frontiers in Cellular and Infection Microbiology, vol. 2, 1º gennaio 2012, p. 45, DOI:10.3389/fcimb.2012.00045. Lingua sconosciuta: English (aiuto)
  13. ^ Vikneswari Mahendran, Delineation of genetic relatedness and population structure of oral and enteric Campylobacter concisus strains by analysis of housekeeping genes, in Microbiology, vol. 161, n. 8, 1º gennaio 2015, pp. 1600–1612, DOI:10.1099/mic.0.000112.
  14. ^ (English) J. Engberg, Campylobacter concisus: an evaluation of certain phenotypic and genotypic characteristics, in Clinical Microbiology and Infection, vol. 11, n. 4, 1º aprile 2005, pp. 288–295, DOI:10.1111/j.1469-0691.2005.01111.x. Lingua sconosciuta: English (aiuto)
  15. ^ (EN) Heung Kit Leslie Chung, Genome analysis of Campylobacter concisus strains from patients with inflammatory bowel disease and gastroenteritis provides new insights into pathogenicity, in Scientific Reports, vol. 6, n. 1, 2 dicembre 2016, p. 38442, DOI:10.1038/srep38442.
  16. ^ Yazan Ismail, Investigation of the Enteric Pathogenic Potential of Oral Campylobacter concisus Strains Isolated from Patients with Inflammatory Bowel Disease, in PLOS One, vol. 7, n. 5, 30 maggio 2012, pp. e38217, DOI:10.1371/journal.pone.0038217.
  17. ^ Vikneswari Mahendran, Examination of the effects of Campylobacter concisus zonula occludens toxin on intestinal epithelial cells and macrophages, in Gut Pathogens, vol. 8, 1º gennaio 2016, p. 18, DOI:10.1186/s13099-016-0101-9.
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