ArticleScientific reports2025
Altered olfactory responses in Fmr1 KO mice.
Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Sustained Notch activation depletes adult neural stem cells and impairs cognitive function.Scientific reports · 2026Article
- Olfactory Valence-Processing Deficits and Aberrant Brain Network Connectivity Underlie Social Dysfunction in Shank3Neuroscience bulletin · 2026Article
- Behavioral and Prefrontal Circuit Deficits in a Newly DevelopedBiological psychiatry global open science · 2026Article
- Dysfunctional neural dynamics associated with sensory phenotypes in Fragile X syndrome: insights from mouse models.Journal of neurodevelopmental disorders · 2025Review
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Authors and funding
5 authors.
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Abstract
Fragile X syndrome (FXS) is a neurodevelopmental disorder oftentimes associated with abnormal social behaviors and altered sensory responsiveness. It is hypothesized that the inappropriate filtering of sensory stimuli, including olfaction, can lead to aberrant social behavior in FXS. However, previous studies investigating olfaction in animal models of FXS have shown inconsistent results. Here, we found that Fmr1 knock-out (KO) mice, a mouse model of FXS, showed increased sniffing duration for non-social odors during their first exposure. Additionally, while wild-type (WT) males demonstrated differences in behavioral patterns between non-social odors while Fmr1 KO males did not show such distinction. We also showed that Fmr1 KO males spent significantly less time sniffing female urine odor compared to WT males. Moreover, we found an increased volume of the olfactory bulb in Fmr1 KO males. Overall, our findings suggest that the Fmr1 KO mice demonstrate atypical olfactory behaviors as well as structural changes in the olfactory bulb.
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