Upregulation of BDNF signifies an increase in the synthesis and secretion of this crucial neurotrophin, which supports the survival of existing neurons and encourages the growth and differentiation of new neurons and synapses. In clinical contexts, this enhancement is often associated with improved synaptic plasticity and neurogenesis, particularly in the hippocampus. Maintaining sufficient BDNF levels is fundamental to resilient neural architecture.
Origin
BDNF was identified through molecular biology research examining factors essential for neuronal survival, hence its classification as a neurotrophic factor. Upregulation refers to the increased expression of the gene encoding this protein, often measured via mRNA levels or protein concentration.
Mechanism
Interventions that promote BDNF upregulation typically influence intracellular signaling cascades, such as those activated by exercise or specific nutritional precursors, leading to enhanced transcription factor activity at the BDNF gene promoter. This results in greater availability of the protein to bind to its TrkB receptors, initiating pro-survival and pro-plasticity downstream signaling.
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