Impact of Probiotics and Gut Microbiota on Host Behavior

2016 ◽  
pp. 29-41 ◽  
Author(s):  
Sarabjit Singh Kanwar ◽  
Sohini Walia ◽  
Sakshi Sharma
Keyword(s):  
2020 ◽  
Author(s):  
Pratikshya Ray ◽  
Debasmita Das ◽  
Uday Pandey ◽  
Palok Aich

AbstractThe gut is the largest reservoir of the resident microbiota. The microbiota can affect the host behavior and immunity. While the consequence of treatment with antibiotics on the gut microbiota can be destructive but can be utilized as a tool to understand the host immunity and behavior. The magnitude of perturbation and time needed for the restoration of gut microbiota can depend on the immune bias of the host. In the current study, we therefore, observed the perturbation and restoration kinetics of gut microbiota following treatment with vancomycin and its effect on the host physiology in both Th1-(C57BL/6) and Th2-(BALB/c) biased mice. A comparative metagenomic analysis revealed that the treatment with vancomycin caused a significant decrease in the abundance of Firmicutes and Bacteroidetes phyla and an initial increase in Proteobacteria. Increase in Proteobacteria decreased with continued treatment with vancomycin to result into a significant rise in Verrucomicrobia phylum. We established the patterns of gut microbiota alteration and its effect on a) the behavior of mice, b) expression of key brain molecules and b) immunity related genes. We followed the gut microbiome restoration for a period of two months following withdrawal of treatment with vancomycin. Maximum restoration (>70%) of gut microbiota happened by the 15th day of withdrawal. BALB/c mice showed a more efficient restoration of gut microbiota compared to C57BL/6 mice. The results, in general, revealed that along with the restoration of major gut microbes, important physiological and behavioral changes of both mice strains returned to the normal level.


2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Laura C. Bridgewater ◽  
Chenhong Zhang ◽  
Yanqiu Wu ◽  
Weiwei Hu ◽  
Qianpeng Zhang ◽  
...  

Gut Microbes ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 245-248
Author(s):  
Catherine E. Schretter
Keyword(s):  

Author(s):  
Sunmin Park ◽  
Sunna Kang ◽  
Da Sol Kim

Abstract. Folate and vitamin B12(V-B12) deficiencies are associated with metabolic diseases that may impair memory function. We hypothesized that folate and V-B12 may differently alter mild cognitive impairment, glucose metabolism, and inflammation by modulating the gut microbiome in rats with Alzheimer’s disease (AD)-like dementia. The hypothesis was examined in hippocampal amyloid-β infused rats, and its mechanism was explored. Rats that received an amyloid-β(25–35) infusion into the CA1 region of the hippocampus were fed either control(2.5 mg folate plus 25 μg V-B12/kg diet; AD-CON, n = 10), no folate(0 folate plus 25 μg V-B12/kg diet; AD-FA, n = 10), no V-B12(2.5 mg folate plus 0 μg V-B12/kg diet; AD-V-B12, n = 10), or no folate plus no V-B12(0 mg folate plus 0 μg V-B12/kg diet; AD-FAB12, n = 10) in high-fat diets for 8 weeks. AD-FA and AD-VB12 exacerbated bone mineral loss in the lumbar spine and femur whereas AD-FA lowered lean body mass in the hip compared to AD-CON(P < 0.05). Only AD-FAB12 exacerbated memory impairment by 1.3 and 1.4 folds, respectively, as measured by passive avoidance and water maze tests, compared to AD-CON(P < 0.01). Hippocampal insulin signaling and neuroinflammation were attenuated in AD-CON compared to Non-AD-CON. AD-FAB12 impaired the signaling (pAkt→pGSK-3β) and serum TNF-α and IL-1β levels the most among all groups. AD-CON decreased glucose tolerance by increasing insulin resistance compared to Non-AD-CON. AD-VB12 and AD-FAB12 increased insulin resistance by 1.2 and 1.3 folds, respectively, compared to the AD-CON. AD-CON and Non-AD-CON had a separate communities of gut microbiota. The relative counts of Bacteroidia were lower and those of Clostridia were higher in AD-CON than Non-AD-CON. AD-FA, but not V-B12, separated the gut microbiome community compared to AD-CON and AD-VB12(P = 0.009). In conclusion, folate and B-12 deficiencies impaired memory function by impairing hippocampal insulin signaling and gut microbiota in AD rats.


Planta Medica ◽  
2016 ◽  
Vol 81 (S 01) ◽  
pp. S1-S381
Author(s):  
EM Pferschy-Wenzig ◽  
K Koskinen ◽  
C Moissl-Eichinger ◽  
R Bauer

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