2024Journal articleFree to read
Nakao R, Takatsuka A, Mandokoro K, Narisawa N, Ikeda T, Takai H, Ogata Y
Microbiology spectrum
ABSTRACT Porphyromonas gingivalis has been associated with progression of periodontitis, characterized by inflammation and destruction of periodontal tissues. Here, we report that matcha, a product of Camellia sinensis , hampers the adherence and survival of P. gingivalis through multiple tactics. Matcha extract (ME) inhibited the growth not only of P. gingivalis but also of Prevotella nigrescen s and Fusobacterium nucleatum , while it did not inhibit growth of nine species of oral streptococci and Aggregatibacter actinomycetemcomitans . ME-mediated P. gingivalis growth inhibition was characterized by both morphological and physiological changes at the bacterial envelope, which were accompanied by nano-particle formation and decreased membrane fluidity/permeability without loss of membrane integrity. ME also triggered autoaggregation of P. gingivalis in a major fimbriae (FimA)-dependent manner. In addition, adherence of P. gingivalis was dramatically inhibited by ME, irrespective of fimbriae. Furthermore, a structure-activity relationship study tested a series of catechins isolated from ME and identified the pyrogallol-type B-ring of catechins as essential for P. gingivalis growth inhibition. In a clinical study to assess the microbiological and therapeutic effects of matcha mouthwash in patients with periodontitis, the P. gingivalis number in saliva was significantly reduced by matcha mouthwash compared to the pre-intervention level. A tendency toward improvement in probing pocket depth was observed in the matcha group, although the difference was not statistically significant. Taken together, we present a proof of concept, based on the multimodal inhibitory effect of matcha against P. gingivalis , and that matcha may have clinical applicability for prevention and…
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Study type
Clinical trial (non-randomized)
Human intervention study without random assignment.
Assigned automatically from the title, abstract and subject terms.
Topics
Matcha is a main subject here (named in the title).
Nakao R, Takatsuka A, Mandokoro K, Narisawa N, Ikeda T, Takai H, Ogata Y. (2024). Multimodal inhibitory effect of matcha on Porphyromonas gingivalis. Microbiology spectrum. https://doi.org/10.1128/spectrum.03426-23
DOI: 10.1128/spectrum.03426-23 · PubMed ID: 38771061 · Cited by 10 (OpenAlex)
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