Leptin and Its Effects on Dendritic Filopodia in Hippocampal Neurons
Author Information
Author(s): O'Malley Dervla, MacDonald Neil, Mizielinska Sarah, Connolly Christopher N., Irving Andrew J., Harvey Jenni
Primary Institution: Neurosciences Institute, Division of Pathology and Neuroscience, Ninewells Hospital and Medical School, University of Dundee, Dundee, UK
Hypothesis
Leptin promotes rapid changes in the morphology of dendritic filopodia in hippocampal neurons.
Conclusion
Leptin rapidly increases the motility and density of dendritic filopodia, which is associated with the formation of new synaptic connections.
Supporting Evidence
- Leptin treatment increased the density of dendritic filopodia by approximately 309% compared to control.
- Significant increases in filopodial density were observed as early as 10 minutes after leptin exposure.
- Leptin-induced changes in dendritic morphology were dependent on NMDA receptor activation.
Takeaway
Leptin helps brain cells grow tiny branches called filopodia, which are important for making connections between cells.
Methodology
Hippocampal neurons were cultured and treated with leptin to observe changes in dendritic filopodia density and motility.
Participant Demographics
Neonatal Sprague Dawley rats (1–3 days old) were used for hippocampal neuron cultures.
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.001
Digital Object Identifier (DOI)
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