PMID- 25851919 OWN - NLM STAT- MEDLINE DCOM- 20160118 LR - 20150423 IS - 1601-183X (Electronic) IS - 1601-183X (Linking) VI - 14 IP - 4 DP - 2015 Apr TI - Strain-dependent variations in visceral sensitivity: relationship to stress, anxiety and spinal glutamate transporter expression. PG - 319-29 LID - 10.1111/gbb.12216 [doi] AB - Responses to painful stimuli differ between populations, ethnic groups, sexes and even among individuals of a family. However, data regarding visceral pain are still lacking. Thus, we investigated differences in visceral nociception across inbred and outbred mouse strains using colorectal distension. Anxiety and depression-like behaviour were assessed using the open field and forced swim test as well as the corticosterone stress response. Possible mechanistic targets [excitatory amino acid transporter (EAAT-1), brain-derived neurotrophic factor (BDNF) and 5HT1A receptor] were also assessed using quantitative real-time polymerase chain reaction. Adult, male, inbred and outbred mouse strains were used in all assays (inbred strains; CBA/J Hsd, C3H/HeNHsd, BALB/c OlaHsd, C57 BL/6JOlaHsd, DBA/2J RccHsd, CAST/EiJ, SM/J, A/J OlaHsd, 129P2/OlaHsd, FVB/NHan Hsd and outbred strains: Swiss Webster, CD-1). mRNA expression levels of EAAT-1, BDNF and 5HT1A receptor (HTR1A) were quantified in the lumbosacral spinal cord, amygdala and hippocampus. A significant effect of strain was found in visceral sensitivity, anxiety and depressive-like behaviours. Strain differences were also seen in both baseline and stress-induced corticosterone levels. CBA/J mice consistently exhibited heightened visceral sensitivity, anxiety behaviour and depression-like behaviour which were associated with decreased spinal EAAT-1 and hippocampal BDNF and HTR1A. Our results show the CBA/J mouse strain as a novel mouse model to unravel the complex mechanisms of brain-gut axis disorders such as irritable bowel syndrome, in particular the underlying mechanisms of visceral hypersensitivity, for which there is great need. Furthermore, this study highlights the importance of genotype and the consequences for future development of transgenic strains in pain research. CI - (c) 2015 John Wiley & Sons Ltd and International Behavioural and Neural Genetics Society. FAU - Moloney, R D AU - Moloney RD AD - Laboratory of Neurogastroenterology, Alimentary Pharmabiotic Centre, Biosciences Institute, Ireland; Department of Psychiatry, Ireland. FAU - Dinan, T G AU - Dinan TG FAU - Cryan, J F AU - Cryan JF LA - eng PT - Journal Article DEP - 20150421 PL - England TA - Genes Brain Behav JT - Genes, brain, and behavior JID - 101129617 RN - 0 (Amino Acid Transport System X-AG) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Excitatory Amino Acid Transporter 1) RN - 0 (Slc1a3 protein, mouse) RN - 112692-38-3 (Receptor, Serotonin, 5-HT1A) RN - W980KJ009P (Corticosterone) SB - IM MH - Amino Acid Transport System X-AG/genetics/*metabolism MH - Amygdala/metabolism MH - Animals MH - Anxiety/*genetics/physiopathology MH - Brain-Derived Neurotrophic Factor/genetics/metabolism MH - Corticosterone/blood MH - Excitatory Amino Acid Transporter 1/genetics/*metabolism MH - Hippocampus/metabolism MH - Intestines/*innervation MH - Male MH - Mice MH - Mice, Inbred Strains MH - *Nociception MH - Receptor, Serotonin, 5-HT1A/genetics/metabolism MH - Spinal Cord/*metabolism MH - Stress, Psychological/*genetics/physiopathology OTO - NOTNLM OT - BDNF OT - animal behaviour OT - anxiety OT - colorectal distension OT - depression OT - glutamate OT - mouse strain OT - serotonin OT - stress OT - visceral pain EDAT- 2015/04/09 06:00 MHDA- 2016/01/19 06:00 CRDT- 2015/04/09 06:00 PHST- 2015/04/09 06:00 [entrez] PHST- 2015/04/09 06:00 [pubmed] PHST- 2016/01/19 06:00 [medline] AID - 10.1111/gbb.12216 [doi] PST - ppublish SO - Genes Brain Behav. 2015 Apr;14(4):319-29. doi: 10.1111/gbb.12216. Epub 2015 Apr 21.