Lacticaseibacillus rhamnosus

Lacticaseibacillus rhamnosus
Scientific classification Edit this classification
Domain: Bacteria
Phylum: Bacillota
Class: Bacilli
Order: Lactobacillales
Family: Lactobacillaceae
Genus: Lacticaseibacillus
Species:
L. rhamnosus
Binomial name
Lacticaseibacillus rhamnosus
(Hansen 1968) Zheng et al. 2020
Synonyms[1]
  • Lactobacillus rhamnosus (Hansen 1968) Collins et al. 1989
  • Lactobacillus casei subsp. rhamnosus Hansen 1968 (Approved Lists 1980)

Lacticaseibacillus rhamnosus (previously Lactobacillus rhamnosus[1]) is a bacterium that originally was considered to be a subspecies of L. casei, but genetic research found it to be a separate species in the L. casei clade, which also includes L. paracasei and L. zeae.[2][3] It is a short Gram-positive homofermentative facultative anaerobic non-spore-forming rod that often appears in chains. Some strains of L. rhamnosus bacteria are being used as probiotics, and are particularly useful in treating infections of the female urogenital tract, most particularly very difficult to treat cases of bacterial vaginosis (or "BV").[4] The species Lacticaseibacillus rhamnosus and Limosilactobacillus reuteri are commonly found in the healthy female genito-urinary tract and are helpful to regain control of dysbiotic bacterial overgrowth during an active infection. L. rhamnosus sometimes is used in dairy products such as fermented milk and as non-starter-lactic acid bacterium (NSLAB) in long-ripened cheese.[5] While frequently considered a beneficial organism, L. rhamnosus may not be as beneficial to certain subsets of the population; in rare circumstances, especially those primarily involving weakened immune system or infants, it may cause endocarditis.[6] Despite the rare infections caused by L. rhamnosus, the species is included in the list of bacterial species with qualified presumed safety (QPS) status of the European Food Safety Agency.[7]

  1. ^ a b Zheng J, Wittouck S, Salvetti E, Franz CMAP, Harris HMB, Mattarelli P, et al. (April 2020). "A taxonomic note on the genus Lactobacillus: Description of 23 novel genera, emended description of the genus Lactobacillus Beijerinck 1901, and union of Lactobacillaceae and Leuconostocaceae". International Journal of Systematic and Evolutionary Microbiology. 70 (4): 2782–2858. doi:10.1099/ijsem.0.004107. hdl:10067/1738330151162165141. PMID 32293557.
  2. ^ Wuyts S, Wittouck S, De Boeck I, Allonsius CN, Pasolli E, Segata N, Lebeer S (2017-08-29). Dorrestein PC (ed.). "Large-Scale Phylogenomics of the Lactobacillus casei Group Highlights Taxonomic Inconsistencies and Reveals Novel Clade-Associated Features". mSystems. 2 (4): mSystems.00061–17, e00061–17. doi:10.1128/mSystems.00061-17. PMC 5566788. PMID 28845461.
  3. ^ Liu DD, Gu CT (December 2020). "Proposal to reclassify Lactobacillus zhaodongensis, Lactobacillus zeae, Lactobacillus argentoratensis and Lactobacillus buchneri subsp. silagei as Lacticaseibacillus zhaodongensis comb. nov., Lacticaseibacillus zeae comb. nov., Lactiplantibacillus argentoratensis comb. nov. and Lentilactobacillus buchneri subsp. silagei comb. nov., respectively and Apilactobacillus kosoi as a later heterotypic synonym of Apilactobacillus micheneri". International Journal of Systematic and Evolutionary Microbiology. 70 (12): 6414–6417. doi:10.1099/ijsem.0.004548. PMID 33112225.
  4. ^ de Vrese M, Laue C, Papazova E, Petricevic L, Schrezenmeir J (May 2019). "Impact of oral administration of four Lactobacillus strains on Nugent score - systematic review and meta-analysis". Beneficial Microbes. 10 (5): 483–496. doi:10.3920/BM2018.0129. PMID 31012733. S2CID 128361555.
  5. ^ Licitra G, Carpino S (2014-01-01). "The Microfloras and Sensory Profiles of Selected Protected Designation of Origin Italian Cheeses". In Donnelly C (ed.). Cheese and Microbes. Vol. 2. American Society of Microbiology. pp. 151–165. doi:10.1128/microbiolspec.cm-0007-2012. ISBN 978-1-55581-586-8. PMID 26082116. {{cite book}}: |journal= ignored (help)
  6. ^ Avlami A, Kordossis T, Vrizidis N, Sipsas NV (May 2001). "Lactobacillus rhamnosus endocarditis complicating colonoscopy". The Journal of Infection. 42 (4): 283–5. doi:10.1053/jinf.2001.0793. PMID 11545575.
  7. ^ "Introduction of a Qualified Presumption of Safety (QPS) approach for assessment of selected microorganisms referred to EFSA - Opinion of the Scientific Committee". EFSA Journal. 5 (12): 587. December 2007. doi:10.2903/j.efsa.2007.587. ISSN 1831-4732.