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Simple and Computer-assisted Olfactory Testing for Mice

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Published on: June 15, 2015

Sex and Age-Dependent Olfactory Memory Dysfunction in ADHD Model Mice.

Jae-Sang Sim¹, Won-Seok Lee¹, Bo-Eun Yoon¹

¹Department of Molecular Biology, Dankook University, Cheonan 31116, Republic of Korea.

Life (Basel, Switzerland)

|March 29, 2023

Summary

Adult male G protein-coupled receptor kinase-interacting protein-1 (GIT1)-deficient mice modeled for attention deficit hyperactivity disorder (ADHD) exhibited impaired olfactory memory. This suggests altered neural stem cell (NSC) differentiation contributes to ADHD-related olfactory dysfunction.

Keywords:

ADHD GIT1 neural stem cell olfactory memory

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Area of Science:

Neuroscience
Developmental Biology
Genetics

Background:

Attention deficit hyperactivity disorder (ADHD) is a common neurodevelopmental disorder.
Neural stem cells (NSCs) in the subventricular zone (SVZ) are crucial for neurodevelopment and olfactory function.
Olfactory dysfunction is a recognized symptom of ADHD, but its link to NSC-derived cells in the olfactory bulb remains unclear.

Purpose of the Study:

To investigate the role of NSCs in olfactory memory deficits associated with ADHD.
To examine olfactory memory and NSC characteristics in G protein-coupled receptor kinase-interacting protein-1 (GIT1)-deficient mice as an ADHD model.

Main Methods:

Utilized GIT1-deficient mice as a model for ADHD.
Assessed olfactory memory in adult male and female mice of different genotypes.
Performed in vitro culture of adult NSCs from the SVZ for cellular analysis.

Main Results:

Adult male GIT1-deficient mice displayed significant impairment in olfactory memory, indicating sex and age-dependent effects.
Distinct NSC populations were observed in SVZ cultures from both sexes and genotypes.
Altered NSC differentiation in GIT1-deficient mice correlated with olfactory memory deficits.

Conclusions:

The study highlights a sex- and age-dependent relationship between GIT1 deficiency, NSC differentiation, and olfactory memory in an ADHD model.
Findings suggest that dysregulation of NSC differentiation in the SVZ contributes to olfactory dysfunction observed in ADHD.
This research provides novel insights into the cellular mechanisms underlying ADHD-related olfactory deficits.