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The Role of the Microbiota and the Application of Probiotics in Reducing the Risk of Cardiovascular Diseases
Published in Marcela Albuquerque Cavalcanti de Albuquerque, Alejandra de Moreno de LeBlanc, Jean Guy LeBlanc, Raquel Bedani, Lactic Acid Bacteria, 2020
Raquel Bedani, Susana Marta Isay Saad
Little is known about which microbial species or communities are the main TMA-producing in mouse or human gut (Brown and Hazen 2018). An in vitro study showed that specific bacteria such as Anaerococcus hydrogenalis, Clostridium asparagiforme, Clostridium hathewayi, Clostridium sporogenes, Escherichia fergusonii, Proteus penneri, Providencia rettgeri, and Edwardsiellatarda may contribute to the production of TMAO from TMA (Romano et al. 2015, Peng et al. 2018). Using gnotobiotic mice, the authors verified that TMAO can accumulate in the serum of animals colonized with TMA-producing species and not in the serum of animals colonized with intestinal microorganisms that do not produce TMA from choline in vitro (Romano et al. 2015). Some studies with mouse models displayed that the groups of microorganisms associated with circulating TMAO levels include the order of RF39; the families Erysipelotrichaceae, Lachnospiraceae, and Porphyromonadaceae; the genera Prevotella and Anaeroplasma; and the species Akkermansia muciniphila (Brown and Hazen 2018).
Microbial characteristics across different tongue coating types in a healthy population
Published in Journal of Oral Microbiology, 2021
Hairong Chen, Qingwei Li, Min Li, Sheng Liu, Chensi Yao, Zixiong Wang, Zhuoya Zhao, Ping Liu, Fan Yang, Xinjian Li, Jun Wang, Yixin Zeng, Xiaolin Tong
Additionally, we found that the phylum Proteobacteria was enriched in the Y-thin tongue coating group. Within Proteobacteria, the Moraxella genus and Porphyromonassomerae, as well as Porphyromonas sp. KLE 1280, Porphyromonas sp. oral taxon 278, and Porphyromonas oral taxon 279, all belonging to the family Porphyromonadaceae, were highly enriched. Similarly, within the Bacteroidetes phylum, Prevotella genus, the human oral cavity resident species Prevotella aurantiaca were more abundant in the Y-thin group, while in the phylum Firmicutes, the species Gemella sanguinis, together with upper class Gemella at the genus level and members of the family Peptostreptococcaceae, were enriched. For the Y-thick greasy tongue coating group, Bacteroidetes was the most abundant phylum, and at the species level, Prevotella melaninogenica was highly enriched. In Firmicutes, the species Veillonella dispar, which mostly resides on the tongue dorsum, and Atopobium parvulum and its closely related species Atopobium sp. BS2 and Atopobium sp. ICM42b, which belong to the Actinobacteria phylum, were highly abundant in the Y-thick greasy group (Figure 3).
A subcutaneous infection mimicking necrotizing fasciitis due to Butyricimonas virosa
Published in Acta Chirurgica Belgica, 2020
Laura De Donder, Ortwin Uyttebroek, Stijn Van Cleven, Frederik Berrevoet
The Butyricimonas genus was first discovered in rat faces in 2009 [1]. It is a Gram negative, anaerobic species that is a normal inhabitant of the intestine in humans and animals. The novel genus is a member of the Porphyromonadaceae family. Currently, there are six different species part of the Butyricimonas genus: B. virosa, B. synergistica, B. paravirosa, B. faecihominis, B. phoceensis and B. faecalis [1–4]. B. virosa is the only species within the genus known to cause infection. There have been six reported cases of infection of which five bacteraemias, all correlated to peritonitis due to abdominal disease, and one bone abscess due to contamination of an open wound after fasciotomy [5–10]. We report a case of subcutaneous infection with B. virosa mimicking necrotizing fasciitis.
Microbiota Diversity in Human Colorectal Cancer Tissues Is Associated with Clinicopathological Features
Published in Nutrition and Cancer, 2019
Yaxin Wu, Lei Shi, Qing Li, Jiao Wu, Wei Peng, Huan Li, Kequan Chen, Yixing Ren, Xiangsheng Fu
We further analyzed the microbiota composition between the female and male group. Fusobacteria phylum showed a higher amount in female group (14.4%) than in male group (6.83%), although, the difference was not statistically significant. Furthermore, Cyanobacteria in male group was significantly higher than in female group at a phylum level (Fig. 2D, t-test, P = 0.026). At a species level, a significantly higher level of aegilops_tauschii, parasutterella_secunda, and porphyromonadaceaebacterium-OUH-334697 was found in male group than in female group (Table 4, t-test, P < 0.05). Interestingly, porphyromonadaceae-bacterium-OUH-334697 in MPD group was also significantly higher than in WD group. Our findings suggested that these bacteria types might be associated with the clinicopathological features of CRC patients.