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Calcium-Binding Proteins in the Autistic Brain-Potential Links to Symptom Development
Élyssa Adriolly Freitas Tavares1, Débora Lopes Silva de Souza1, Francisca Tayná da Silva Gomes1
1Faculty of Health Sciences, Department of Biomedical Sciences, State University of Rio Grande do Norte, Mossoró, Rio Grande do Norte, Brazil.
Summary
Autism spectrum disorder (ASD) involves GABAergic imbalance, with decreased parvalbumin (PV) interneurons linked to symptom severity. This suggests PV
Area of Science:
- Neuroscience
- Developmental Biology
- Genetics
Background:
- Autism spectrum disorder (ASD) is a complex neurodevelopmental condition influenced by genetic and environmental factors.
- Calcium-binding proteins, including calbindin (CB), calretinin (CR), and parvalbumin (PV), play crucial roles in neuronal function.
- Dysregulation of GABAergic signaling is implicated in the pathophysiology of ASD.
Purpose of the Study:
- To review the role of CB, CR, and PV proteins in ASD.
- To explore the clinical correlations of these proteins with ASD.
- To understand their involvement in GABAergic regulation and ASD neuropathology.
Main Methods:
- Systematic review of existing studies on calcium-binding proteins and ASD.
- Analysis of research focusing on PV+ interneurons in the prefrontal cortex of individuals with ASD.
- Correlation analysis between PV+ interneuron reduction and ASD symptom severity.
Main Results:
- A significant decrease in parvalbumin (PV)+ interneurons was observed in the prefrontal cortex of individuals with ASD compared to controls.
- This reduction in PV+ interneurons is associated with synaptic hyperconnectivity, marked by increased excitatory and decreased inhibitory synapses.
- A correlation exists between reduced PV+ interneuron counts and increased severity of ASD behavioral symptoms.
Conclusions:
- GABAergic imbalance is a critical factor in ASD neuropathology.
- Calcium-binding proteins, particularly PV, are vital for regulating neuronal excitability and synaptic connectivity in ASD.
- Findings offer insights for developing novel therapeutic strategies targeting neuronal activity modulation in ASD.
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