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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+Pharmacol
2015 ; 6
(ä): 188
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Cronobacter sakazakii infection alters serotonin transporter and improved fear
memory retention in the rat
#MMPMID26388777
Sivamaruthi BS
; Madhumita R
; Balamurugan K
; Rajan KE
Front Pharmacol
2015[]; 6
(ä): 188
PMID26388777
show ga
It is well established that Cronobacter sakazakii infection cause septicemia,
necrotizing enterocolitis and meningitis. In the present study, we tested whether
the C. sakazakii infection alter the learning and memory through serotonin
transporter (SERT). To investigate the possible effect on SERT, on postnatal
day-15 (PND-15), wistar rat pups were administered with single dose of C.
sakazakii culture (infected group; 10(7) CFU) or 100 ?L of Luria-Bertani broth
(medium control) or without any treatment (naïve control). All the individuals
were subjected to passive avoidance test on PND-30 to test their fear memory. We
show that single dose of C. sakazakii infection improved fear memory retention.
Subsequently, we show that C. sakazakii infection induced the activation of
toll-like receptor-3 and heat-shock proteins-90 (Hsp-90). On the other hand,
level of serotonin (5-hydroxytryptamine) and SERT protein was down-regulated.
Furthermore, we show that C. sakazakii infection up-regulate microRNA-16 (miR-16)
expression. The observed results highlight that C. sakazakii infections was
responsible for improved fear memory retention and may have reduced the level of
SERT protein, which is possibly associated with the interaction of up-regulated
Hsp-90 with SERT protein or miR-16 with SERT mRNA. Taken together, observed
results suggest that C. sakazakii infection alter the fear memory possibly
through SERT. Hence, this model may be effective to test the C. sakazakii
infection induced changes in synaptic plasticity through SERT and effect of other
pharmacological agents against pathogen induced memory disorder.