Ping Liu1, Xi-Ze Jia2, Yi Chen1, Yang Yu1, Kan Zhang1, Ya-Jie Lin1, Bao-Hong Wang3, Guo-Ping Peng1. 1. Department of Neurology, College of Medicine, The First Affiliated Hospital, Zhejiang University, Hangzhou, China. 2. Center for Cognition and Brain Disorders, Hangzhou Normal University, Hangzhou, China. 3. Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, College of Medicine, The First Affiliated Hospital, Zhejiang University, Hangzhou, China.
Abstract
AIMS: To explore the potential relationships among gut microbiota (GM), local brain spontaneous activity, and neuropsychological characteristics in amnestic mild cognitive impairment (aMCI) patients. METHODS: Twenty aMCI and 22 healthy control (HC) subjects were recruited. The GM composition was determined by 16S ribosomal RNA gene sequencing. Resting-state functional magnetic resonance imaging scans were performed, and fractional amplitude of low-frequency fluctuations (fALFF) was calculated across different frequencies. The Spearman or Pearson correlation analysis was used to analyze the relationship between spontaneous brain activity and cognitive function, and GM composition. RESULTS: aMCI patients had altered GM state and local spontaneous brain activity as compared with HC subjects. Correlation analysis showed that aMCI and HC groups had different "GM-intrinsic brain activity interaction" patterns. In aMCI group, at the typical band (0.01-0.08 Hz), the relative abundance (RA) of Bacteroides from phylum to genus level was negatively correlated with fALFF value of cerebellar vermis IV-V, and the Ruminococcaceae RA was negatively correlated with fALFF values of left lenticular nucleus and pallidum. The Clostridiaceae RA and Blautia RA were positively correlated with the left cerebellum lobules IV-V at the slow-4 band (0.027-0.073 Hz). The Veillonellaceae RA was positively correlated with fALFF values of left precentral gyrus at the slow-5 band (0.073-0.08 Hz). Correlation analysis showed that Clostridium members (Lachnospiraceae and Blautia) were positively, while Veillonellaceae was negatively, correlated with cognition test. Bacteroides was positively correlated with attention and computation, and negatively correlated with the three-stage command score. CONCLUSIONS: aMCI patients have a specific GM-intrinsic brain activity-cognitive function interaction pattern.
AIMS: To explore the potential relationships among gut microbiota (GM), local brain spontaneous activity, and neuropsychological characteristics in amnestic mild cognitive impairment (aMCI) patients. METHODS: Twenty aMCI and 22 healthy control (HC) subjects were recruited. The GM composition was determined by 16S ribosomal RNA gene sequencing. Resting-state functional magnetic resonance imaging scans were performed, and fractional amplitude of low-frequency fluctuations (fALFF) was calculated across different frequencies. The Spearman or Pearson correlation analysis was used to analyze the relationship between spontaneous brain activity and cognitive function, and GM composition. RESULTS: aMCI patients had altered GM state and local spontaneous brain activity as compared with HC subjects. Correlation analysis showed that aMCI and HC groups had different "GM-intrinsic brain activity interaction" patterns. In aMCI group, at the typical band (0.01-0.08 Hz), the relative abundance (RA) of Bacteroides from phylum to genus level was negatively correlated with fALFF value of cerebellar vermis IV-V, and the Ruminococcaceae RA was negatively correlated with fALFF values of left lenticular nucleus and pallidum. The Clostridiaceae RA and Blautia RA were positively correlated with the left cerebellum lobules IV-V at the slow-4 band (0.027-0.073 Hz). The Veillonellaceae RA was positively correlated with fALFF values of left precentral gyrus at the slow-5 band (0.073-0.08 Hz). Correlation analysis showed that Clostridium members (Lachnospiraceae and Blautia) were positively, while Veillonellaceae was negatively, correlated with cognition test. Bacteroides was positively correlated with attention and computation, and negatively correlated with the three-stage command score. CONCLUSIONS: aMCI patients have a specific GM-intrinsic brain activity-cognitive function interaction pattern.
Authors: Nicholas M Vogt; Robert L Kerby; Kimberly A Dill-McFarland; Sandra J Harding; Andrew P Merluzzi; Sterling C Johnson; Cynthia M Carlsson; Sanjay Asthana; Henrik Zetterberg; Kaj Blennow; Barbara B Bendlin; Federico E Rey Journal: Sci Rep Date: 2017-10-19 Impact factor: 4.379
Authors: Eline Margrete Randulff Hillestad; Aina van der Meeren; Bharat Halandur Nagaraja; Ben René Bjørsvik; Noman Haleem; Alfonso Benitez-Paez; Yolanda Sanz; Trygve Hausken; Gülen Arslan Lied; Arvid Lundervold; Birgitte Berentsen Journal: World J Gastroenterol Date: 2022-01-28 Impact factor: 5.742