Fragile X Syndrome
Fragile X Syndrome - Related Videos
10:58
TMS: Using the Theta-Burst Protocol to Explore Mechanism of Plasticity in Individuals with Fragile X Syndrome and Autism
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Cited by 7 •
2010
In this article, we examine the effects of Theta-Burst TMS stimulation on cortical plasticity in individuals suffering from Fragile X syndrome and individuals on the autistic spectrum.
09:46
Capturing Common Fragile Site Breaks by Native γH2A.X ChIP
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2025
We present a rapid and efficient method to detect common fragile site breaks through native γH2A.X chromatin immunoprecipitation (ChIP). This approach significantly reduces both the time and labor associated with traditional γH2A.X ChIP assays while maintaining high reproducibility and reliability of results.
08:31
Conscious and Non-conscious Representations of Emotional Faces in Asperger's Syndrome
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Cited by 5 •
2016
An EEG experimental protocol is designed to clarify the interplay between conscious and non-conscious representations of emotional faces in patients with Asperger's syndrome. The technique suggests that patients with Asperger's syndrome have deficits in non-conscious representation of emotional faces, but have comparable performance in conscious representation with healthy controls.
07:27
Robotic-assisted Left Pneumonectomy For Vanishing Lung Syndrome
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2026
Robotic-assisted pneumonectomy is safe and effective in the management of Vanishing Lung Syndrome, with reduced morbidity and faster recovery times.
08:43
Boldness, Aggression, and Shoaling Assays for Zebrafish Behavioral Syndromes
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Cited by 18 •
2016
This manuscript describes the setup, implementation, and analysis of boldness, aggression, and shoaling in zebrafish and testing for the presence of a behavioral syndrome. A standardized approach for behavioral quantification will allow for easier comparison across studies. Modifications to this protocol are possible as each assay can be run individually.
FAQs
The critical molecular sequence is repeat expansion followed by epigenetic silencing. When the CGG trinucleotide repeat in FMR1 expands sufficiently to trigger methylation, the gene is switched off, reducing fragile X messenger ribonucleoprotein production. This links a DNA repeat change to altered neuronal protein regulation.
Methylation is important because it provides the regulatory step that silences FMR1 after the CGG repeat expands. In this context, the gene's DNA sequence change is connected to reduced gene activity through an added molecular mark. That connection helps explain how altered gene regulation can influence neuronal biology.
Fragile X messenger ribonucleoprotein helps regulate protein synthesis and synaptic development in neurons, so reduced production can affect two closely connected biological processes: how neuronal proteins are made and how synaptic structures develop. This makes the syndrome relevant to neurobiology, because synapses contribute to neural circuit function, learning, and behavior.
At the systems level, the condition offers a way to study how molecular changes scale up to behavior. Reduced fragile X messenger ribonucleoprotein production is connected to synaptic development and protein synthesis, while the resulting neurobiological questions involve learning, behavior, and neural circuit function. This links several levels of biology.
Genetic testing provides information used to support diagnosis and family counseling. Its value extends beyond confirming a clinical concern: because the relevant change occurs in FMR1, results can connect an individual's presentation with an inherited genetic mechanism and help inform discussions about the condition within a family.
Research examines FMR1 regulation and synaptic signaling to understand how altered gene activity may influence neuronal function. These studies address both the DNA-related mechanism and the cellular communication associated with synapses. That combined perspective informs potential therapeutic strategies by linking molecular findings with effects on neural circuits.