https://ogma.newcastle.edu.au/vital/access/ /manager/Index en-au 5 https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:35344 Wed 17 Jul 2019 11:45:17 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:52438 Wed 11 Oct 2023 14:53:58 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:33669 Iba1, Gfap, IL1-β and TNF-α mRNA levels in the cingulate cortex (CC) in adult offspring exposed to maternal immune activation. Prenatal exposure to immune activation had a significant main effect on microglial IBA1-positive immunoreactive material (IBA1+IRM) in the corpus callosum; post-hoc analyses identified a significant increase in GD19 offspring, but not GD10. No change in was observed in the CC. In contrast, maternal immune activation had a significant main effect on GFAP+IRM in the CC at GD19 (not GD10); post-hoc analyses only identified a strong trend towards increased GFAP+IRM in the GD19 offspring, with no white matter changes. This suggests late gestation maternal immune activation causes subtle alterations to microglia and astrocytes in the adult offspring.]]> Tue 04 Jun 2019 13:36:19 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:46136 Thu 29 Jun 2023 12:51:13 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:28641 Sat 24 Mar 2018 07:37:15 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:50760 24 months) mice had impaired performance in a balance beam task compared to young (3-4 months) adult mice. While there was no qualitative loss of cholinergic axon varicosities in the crista ampullaris of old mice, qPCR analysis revealed reduced expression of nicotinic receptor subunit genes Chrna1, Chrna9, and Chrna10 in the cristae of old relative to young mice. Functionally, single-cell patch clamp recordings taken from type II vestibular hair cells exposed to acetylcholine show reduced conductance through alpha9/10 subunit-containing nicotinic receptors in older mice, despite preserved passive membrane properties and voltage-activated conductances. These findings suggest that cholinergic signaling in the peripheral vestibular sensory organs is vulnerable to aging processes, manifesting in dynamic molecular and functional age-related changes. Given the importance of these organs to our everyday activities, and the dramatic increase in fall incidence in the elderly, further investigation into the mechanisms of altered peripheral vestibular function in older humans is warranted.]]> Mon 07 Aug 2023 14:22:26 AEST ]]>