Publications
6 results found
Melgosa-Ecenarro L, Doostdar N, Radulescu CI, et al., 2023, Pinpointing the locus of GABAergic vulnerability in Alzheimer?s disease, SEMINARS IN CELL & DEVELOPMENTAL BIOLOGY, Vol: 139, Pages: 35-54, ISSN: 1084-9521
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- Citations: 3
Doostdar N, Airey J, Radulescu CI, et al., 2021, Multi-scale network imaging in a mouse model of amyloidosis, Cell Calcium, Pages: 102365-102365, ISSN: 0143-4160
Knopfel T, Sweeney Y, Radulescu CI, et al., 2019, Audio-visual experience strengthens multisensory assemblies in adult mouse visual cortex, Nature Communications, Vol: 10, ISSN: 2041-1723
We experience the world through multiple senses simultaneously. To better understand mechanisms of multisensory processing we ask whether inputs from two senses (auditory and visual) can interact and drive plasticity in neural-circuits of the primary visual cortex (V1). Using genetically-encoded voltage and calcium indicators, we find coincident audio-visual experience modifies both the supra and subthreshold response properties of neurons in L2/3 of mouse V1. Specifically, we find that after audio-visual pairing, a subset of multimodal neurons develops enhanced auditory responses to the paired auditory stimulus. This cross-modal plasticity persists over days and is reflected in the strengthening of small functional networks of L2/3 neurons. We find V1 processes coincident auditory and visual events by strengthening functional associations between feature specific assemblies of multimodal neurons during bouts of sensory driven co-activity, leaving a trace of multisensory experience in the cortical network.
Doostdar N, Kim E, Grayson B, et al., 2019, Global brain volume reductions in a sub-chronic phencyclidine animal model for schizophrenia and their relationship to recognition memory, Journal of Psychopharmacology, Vol: 33, Pages: 1274-1287, ISSN: 0269-8811
<jats:sec><jats:title>Background:</jats:title><jats:p> Cognitive deficits and structural brain changes co-occur in patients with schizophrenia. Improving our understanding of the relationship between these is important to develop improved therapeutic strategies. Back-translation of these findings into rodent models for schizophrenia offers a potential means to achieve this goal. </jats:p></jats:sec><jats:sec><jats:title>Aims:</jats:title><jats:p> The purpose of this study was to determine the extent of structural brain changes and how these relate to cognitive behaviour in a sub-chronic phencyclidine rat model. </jats:p></jats:sec><jats:sec><jats:title>Methods:</jats:title><jats:p> Performance in the novel object recognition task was examined in female Lister Hooded rats at one and six weeks after sub-chronic phencyclidine (2 mg/kg intra-peritoneal, n=15) and saline controls (1 ml/kg intra-peritoneal, n=15). Locomotor activity following acute phencyclidine challenge was also measured. Brain volume changes were assessed in the same animals using ex vivo structural magnetic resonance imaging and computational neuroanatomical analysis at six weeks. </jats:p></jats:sec><jats:sec><jats:title>Results:</jats:title><jats:p> Female sub-chronic phencyclidine-treated Lister Hooded rats spent significantly less time exploring novel objects ( p<0.05) at both time-points and had significantly greater locomotor activity response to an acute phencyclidine challenge ( p<0.01) at 3–4 weeks of washout. At six weeks, sub-chronic phencyclidine-treated Lister Hooded rats displayed significant global brain volume reductions ( p<0.05; q<0.05), without apparent regional specificity. Relative volumes of the perirhinal cortex however were positively correlated with novel object exploration time only in sub-chronic phencyclidine r
Cadinu D, Grayson B, Podda G, et al., 2018, NMDA receptor antagonist rodent models for cognition in schizophrenia and identification of novel drug treatments, an update, Neuropharmacology, Vol: 142, Pages: 41-62, ISSN: 0028-3908
Sahin C, Doostdar N, Neill JC, 2016, Towards the development of improved tests for negative symptoms of schizophrenia in a validated animal model, Behavioural Brain Research, Vol: 312, Pages: 93-101, ISSN: 0166-4328
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