Understanding the Scientific Reclassification
For many years, the probiotic microorganism was known as Lactobacillus reuteri. However, advancements in genetic and molecular research in the scientific community led to a large-scale reclassification of the Lactobacillus genus. In April 2020, the genus was formally split into 25 distinct genera, and L. reuteri was moved to the new genus Limosilactobacillus, making its new official name Limosilactobacillus reuteri.
This reclassification does not alter the bacteria itself or its beneficial properties for human health. It is a refinement of scientific taxonomy, similar to a street name being updated for clarity. For the average consumer, the old name (Lactobacillus reuteri) and the new name (Limosilactobacillus reuteri) often appear interchangeably on product labels, but referring to it as Limosilactobacillus reuteri is now the most scientifically accurate approach.
Other Common and Former Names
Apart from its official scientific name, L. reuteri is known by a few different designations. It's important for consumers to recognize these to avoid confusion when researching or purchasing supplements.
- L. reuteri: This is the most common abbreviation used for the species. The initial 'L' is shorthand for either Lactobacillus or the newer Limosilactobacillus.
- Lactobacillus reuteri: As mentioned, this is the former scientific name. Due to its long history, it is still frequently used in research and on supplement packaging.
- Probiotic or Probiotique: While not specific names for the species, these are broader classifications under which L. reuteri and its specific strains are sold and marketed.
Key Strains of L. reuteri and Their Properties
Not all L. reuteri products are the same, as the benefits are often strain-specific. A strain is a genetic subtype within a species, and different strains can have varying effects on the body. Here are a few notable examples:
- DSM 17938 (also known as Protectis®): This well-researched strain was derived from a mother's breast milk and is commonly used to support gut comfort and treat infantile colic.
- ATCC PTA 5289 (part of Prodentis®): An oral isolate, this strain is researched for its benefits in improving oral health by potentially reducing dental plaque and gum inflammation.
- ATCC PTA 6475 (part of Gastrus®): This strain, also isolated from breast milk, has been studied for its anti-inflammatory properties and its potential role in immune modulation.
- RC-14®: This strain, isolated from the human vagina, is often found in women's health probiotics for its ability to adhere to urogenital cells and help balance the microbiota there.
Comparing Different L. reuteri Strains
This table outlines the differences in focus and origin for some of the well-documented strains of L. reuteri.
| Strain | Primary Area of Benefit | Origin | Key Property | Example Product |
|---|---|---|---|---|
| DSM 17938 | Digestive Health | Human Breast Milk | Supports gut comfort, reduces infantile colic | BioGaia Protectis |
| ATCC PTA 5289 | Oral Health | Human Oral Cavity | Reduces dental plaque, combats oral pathogens | BioGaia Prodentis |
| ATCC PTA 6475 | Immune Function | Human Breast Milk | Exhibits anti-inflammatory properties | BioGaia Gastrus |
| RC-14 | Women's Health | Human Vagina | Adheres to urogenital cells, supports vaginal flora | RepHresh Pro-B |
Nutritional Sources and Considerations
While L. reuteri is predominantly known through probiotic supplements, it can be found in some fermented foods. However, the presence and concentration of the bacteria in these foods can be unpredictable and may not be sufficient to provide therapeutic benefits. For a more consistent and reliable dose, supplements are generally recommended.
Integrating probiotics into a balanced diet is a key aspect of nutritional planning. A diet rich in prebiotic fibers, found in foods like bananas, oats, and onions, provides fuel for beneficial bacteria, including L. reuteri, to thrive. By supporting a diverse and balanced gut microbiota, one can potentially improve digestive function, enhance immune responses, and positively influence the gut-brain axis.
Conclusion
The short answer to the question is there another name for L. reuteri? is yes. The modern scientific name is Limosilactobacillus reuteri, a reclassification that reflects a deeper understanding of bacterial genetics. For consumers, this change is mostly cosmetic, but it reinforces the importance of focusing on specific, clinically researched strains for targeted health benefits. Whether through fermented foods or high-quality supplements, incorporating this probiotic into a nutritious diet can contribute to overall well-being, from improved gut health to enhanced immunity.
Outbound Link: To learn more about the official reclassification of the Lactobacillus genus, visit the International Scientific Association for Probiotics and Prebiotics (ISAPP) page: https://isappscience.org/new-names-for-important-probiotic-lactobacillus-species/.
