Higher abundance of Akkermansia muciniphila has been associated with a milder disease course in newly discovered ulcerative colitis patients.
Archaea and Akkermansia were significantly more prevalent after weight reduction. A Low FODMAP diet has been shown to decrease the abundance of A. muciniphila leading to recommendations against long-term use of such a diet. A. muciniphila is a mucolytic specialist that has potent anti-inflammatory effects in part associated with a specific surface coat protein.
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Akkermansia muciniphila is a mucin-degrading bacterium commonly found in human gut. Mucins are glycoprotein components of the mucous that coats the surfaces of cells lining the respiratory, digestive, and urogenital tracts. Increased mucin production occurs in many cancers (pancreas, lung, breast, ovary, colon and other tissues). Mucins are also over-expressed in lung diseases such as asthma, bronchitis, chronic obstructive pulmonary disease (COPD) or cystic fibrosis.
Akkermansia muciniphila has been reported as a beneficial bacterium that reduces gut barrier disruption and insulin resistance.
Studies have identified a loss in abundance of Akkermansia muciniphila in patients with obesity and type 2 diabetes.
Akkermansia muciniphila has been inversely associated with:
- obesity
- diabetes
- inflammation, and
- metabolic disorders.
Due to its highly promising probiotic activities against obesity and diabetes, Akkermansia muciniphila drawn intensive interest for research and development in recent years. A number of human and animal studies have shown that the abundance of Akkermansia muciniphila in the gut can be enhanced through dietary interventions.
Akkermansia muciniphila may represent 3–5% of the microbial composition in the healthy human intestinal tract, and have a crucial role in the regulation of the gut barrier and other homeostatic and metabolic functions.
References:
– Akkermansia muciniphila-derived extracellular vesicles influence gut permeability through the regulation of tight junctions, https://www.nature.com/articles/emm2017282
– Derrien M, Vaughan EE, Plugge CM, de Vos WM. Akkermansia muciniphila gen. nov., sp. nov., a human intestinal mucin-degrading bacterium. Int J Syst Evol Microbiol 2004; 54: 1469–1476.
– Strategies to promote abundance of Akkermansia muciniphila, an emerging probiotics in the gut, evidence from dietary intervention studies, https://www.sciencedirect.com/science/article/pii/S1756464617301627
– Mucins in cancer: function, prognosis and therapy, https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2951677/
– Specific gut microbiota features and metabolic markers in postmenopausal women with obesity, http://doi.org/10.1038/nutd.2015.9
– Akkermansia muciniphila and its role in regulating host functions, https://www.sciencedirect.com/science/article/pii/S0882401015301789
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Acinetobacter junii, Actinobacteria, Actinomycetales, Adenovirus F40/41, Akkermansia muciniphila, Alistipes onderdonkii, Alistipes spp., Bacilli Class, Bacillus licheniformis, Bacteroides fragilis, Bacteroides pectinophilus, Bacteroides spp., Bacteroides spp. & Prevotella spp., Bacteroides stercoris, Bacteroides zoogleoformans, Bifidobacterium spp., Campylobacter (C. jejuni, C. coli and C. lari), Carbohydrates, Catenibacterium mitsuokai, Citrobacter farmeri / amalonaticus, Citrobacter freundii complex, Clostridia Class, Clostridioides difficile (Toxin A/B), Clostridium L2-50, Clostridium methylpentosum, Coprobacillus cateniformis, Cryptosporidium (C. parvum and C. hominis), Dialister invisus, Dialister invisus & Megasphaera micronuciformis, Dorea spp., Elastase, Entamoeba histolytica, Enterobacter cloacae complex, Enterobacteriaceae, Enterotoxigenic Escherichia coli (ETEC) lt/st, Escherichia coli O157, Escherichia spp., Eubacterium biforme, Eubacterium hallii, Eubacterium rectale, Eubacterium siraeum, Faecalibacterium prausnitzii, Firmicutes, Giardia duodenalis (AKA intestinalis & lamblia), Klebsiella pneumoniae, Klebsiella pneumoniae/variicola, Lachnospiraceae, Lactobacillus family, Lactobacillus ruminis & Pediococcus acidilactici, Lactobacillus spp., Lactococcus garvieae, Mycoplasma hominis, Norovirus GI/GII, Parabacteroides johnsonii, Parabacteroides spp., Phascolarctobacterium spp., Proteobacteria, RBC, Rotavirus A, Rothia dentocariosa, Rothia mucilaginosa, Ruminococcus albus & R. bromii, Ruminococcus gnavus, Salmonella spp., Secretory IgA, Shiga-like toxin-producing Escherichia coli (STEC) stx1/stx2, Shigella (S. boydii, S. sonnei, S. flexneri & S. dysenteriae), Streptococcus agalactiae & Eubacterium rectale, Streptococcus mutans, Streptococcus parasanguinis, Streptococcus salivarius, Streptococcus salivarius ssp., Streptococcus salivarius ssp. thermophilus, Streptococcus salivarius ssp. thermophilus & S. sanguinis, Streptococcus spp., Veillonella spp., Vibrio cholerae, Yeast