Cited by 53Gut microbiota and healthVitamin K Research StudiesProbiotics and Fermented Foods

Fecal menaquinone profiles of overweight adults are associated with gut microbiota composition during a gut microbiota–targeted dietary intervention

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Karl, J Philip, Fu, Xueyan, Wang, Xiaoxin, Zhao, Yufeng, Shen, Jian, Zhang, Chenhong, Wolfe, Benjamin E, Saltzman, Edward +2 more·2015·The American Journal of Clinical Nutrition

Abstract

Background Emerging evidence supports novel roles for vitamin K in cardiometabolic health, some of which may be unique to the bacterially synthesized vitamin K forms known as menaquinones. However, factors influencing menaquinone biosynthesis by the gut microbiota and associations with cardiometabolic health have not been examined.Objective The objective of this study was to identify associations between fecal menaquinone profiles, gut microbiota composition, and biomarkers of cardiometabolic health.Design The menaquinone profile and gut microbiota structure were periodically measured in fecal samples collected from 77 overweight Chinese adults who consumed a prescribed diet previously shown to alter gut microbiota composition and to improve cardiometabolic biomarkers.Results Covariance among menaquinones within individual fecal samples partitioned individuals into 2 distinct groups, herein introduced as menaquinotypes of the human gut. Menaquinotypes were characterized by differences in menaquinone (MK) 5 and MK9-MK13 and differences in the relative abundance of several operational taxonomic units (OTUs) delineated at the species level, predominantly within the genera Prevotella spp. and Bacteroides spp. Fecal MK4, MK6, and MK8 decreased during the intervention (P < 0.05); and longitudinal changes in the relative abundance of >100 OTUs were associated with altered fecal content of ≥1 individual menaquinone. The strongest and most consistent relations were between Prevotella spp. and MK5 and MK11-MK13, between Bacteroides spp. and MK9 and MK10, and between Escherichia/Shigella spp. and MK8. Neither individual menaquinones nor menaquinotypes were longitudinally associated with markers of glycemia, insulin resistance, or inflammation.Conclusions These findings suggest that variability in fecal menaquinone content is predominantly determined by relatively few genera within the gut microbiota and that diet-mediated alterations in gut microbiota composition may provide a feasible approach for altering gut menaquinone content. This trial was registered at the Chinese Clinical Trials Registry as ChiCTR-TRC-09000353.

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  • Fecal menaquinone levels have been correlated with the abundance of Prevotella and Bacteroides species and are susceptible to microbiome-targeted diets.

    “Fecal menaquinone levels have been correlated with the abundance of Prevotella and Bacteroides species and are susceptible to microbiome-targeted diets32, suggesting that menaquinol could represent an early marker of nonresponse that is amenable to dietary intervention.”

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Authors
Karl, J. P., Fu, X., Wang, X., Zhao, Y., Shen, J., Zhang, C., Wolfe, B. E., Saltzman, E., Zhao, L., & Booth, S. L.
Affiliations
  • Tufts University (US)
  • Shanghai Jiao Tong University (CN)
Corresponding author
  • Zhao, Liping
  • Booth, Sarah L
Venue
The American Journal of Clinical Nutrition
Publisher
Elsevier BV
Published
2015-07
Volume
102
Issue
1
Pages
84-93
ISSN
0002-9165 (ISSN-L)
OpenAlex
W1946608667
Cited by
53
References
52
Citations by year
2026: 4 · 2025: 4 · 2024: 7 · 2023: 9 · 2022: 7 · 2021: 2 · 2020: 6 · 2019: 6 · 2018: 2 · 2017: 3 · 2016: 2 · 2015: 1
FWCI
1.16
Type
journal article
Language
en
Open access
Locations
  • American Journal of Clinical Nutrition (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Nature Science Foundation of China (2008AA02Z315, 2009AA02Z310)
  • International Cooperation Program (2007DFC30450, 075407001)
  • National Science, and Technology Pillar Program (2006BAI11B08)
  • USDA (58-1950-7-707)
  • Dr. James Sadowski Memorial Internship
  • Science, Mathematics, and Research Transformation Defense Education Program
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Health Sciences › Nursing › Nutrition and Dietetics › Vitamin K Research Studies
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Probiotics and Fermented Foods
Keywords
vitamin K2, vitamin K, gut microbiota, overweight adults, Prevotella, Bacteroides, Escherichia-Shigella, cardiometabolic health, insulin resistance, inflammation, glycemia, menaquinone biosynthesis
MeSH terms
Adult, Bacteroides, Cross-Sectional Studies, Diet, Feces, Female, Humans, Longitudinal Studies, Male, Middle Aged, Body Mass Index, Prevotella, Vitamin K 2, Gastrointestinal Tract, Asian People, Overweight, Waist Circumference, Young Adult, Microbiota

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