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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Front+Microbiol
2018 ; 9
(ä): 675
Nephropedia Template TP
gab.com Text
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English Wikipedia
Gut Microbiota Profiling and Gut-Brain Crosstalk in Children Affected by
Pediatric Acute-Onset Neuropsychiatric Syndrome and Pediatric Autoimmune
Neuropsychiatric Disorders Associated With Streptococcal Infections
#MMPMID29686658
Quagliariello A
; Del Chierico F
; Russo A
; Reddel S
; Conte G
; Lopetuso LR
; Ianiro G
; Dallapiccola B
; Cardona F
; Gasbarrini A
; Putignani L
Front Microbiol
2018[]; 9
(ä): 675
PMID29686658
show ga
Pediatric acute-onset neuropsychiatric syndrome (PANS) and pediatric autoimmune
neuropsychiatric disorders associated with streptococcal infections syndrome
(PANDAS) are conditions that impair brain normal neurologic function, resulting
in the sudden onset of tics, obsessive-compulsive disorder, and other behavioral
symptoms. Recent studies have emphasized the crosstalk between gut and brain,
highlighting how gut composition can influence behavior and brain functions.
Thus, the present study investigates the relationship between PANS/PANDAS and gut
microbiota ecology. The gut composition of a cohort of 30 patients with
PANS/PANDAS was analyzed and compared to control subjects using 16S rRNA-based
metagenomics. Data were analyzed for their ?- and ?-diversity; differences in
bacterial distribution were detected by Wilcoxon and LEfSe tests, while metabolic
profile was predicted via PICRUSt software. These analyses demonstrate the
presence of an altered bacterial community structure in PANS/PANDAS patients with
respect to controls. In particular, ecological analysis revealed the presence of
two main clusters of subjects based on age range. Thus, to avoid age bias, data
from patients and controls were split into two groups: 4-8 years old and >9 years
old. The younger PANS/PANDAS group was characterized by a strong increase in
Bacteroidetes; in particular, Bacteroides, Odoribacter, and Oscillospira were
identified as potential microbial biomarkers of this composition type. Moreover,
this group exhibited an increase of several pathways concerning the modulation of
the antibody response to inflammation within the gut as well as a decrease in
pathways involved in brain function (i.e., SCFA, D-alanine and tyrosine
metabolism, and the dopamine pathway). The older group of patients displayed a
less uniform bacterial profile, thus impairing the identification of distinct
biomarkers. Finally, Pearson's analysis between bacteria and anti-streptolysin O
titer reveled a negative correlation between genera belonging to Firmicutes
phylum and anti-streptolysin O while a positive correlation was observed with
Odoribacter. In conclusion, this study suggests that streptococcal infections
alter gut bacterial communities leading to a pro-inflammatory status through the
selection of specific bacterial strains associated with gut inflammation and
immune response activation. These findings highlight the possibility of studying
bacterial biomarkers associated with this disorder and might led to novel
potential therapeutic strategies.