Organum Vasculosum Of The Lamina Terminalis (Ovlt) Neurons is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
The Organum Vasculosum of the Lamina Terminalis (OVLT) is a circumventricular organ located in the rostral wall of the third ventricle. As one of the median eminence-connected structures, the OVLT lacks a complete blood-brain barrier and serves as the primary sensory interface for circulating molecules involved in body fluid homeostasis, autonomic regulation, and neuroendocrine control. [1]
The OVLT is situated in the preoptic region, immediately dorsal to the optic chiasm and rostral to the median preoptic nucleus. It is characterized by dense networks of fenestrated capillaries that allow direct contact between circulating blood-borne substances and neural tissue. This makes the OVLT uniquely positioned to monitor systemic signals including: [2]
| Taxonomy | ID | Name / Label |
|---|---|---|
| Cell Ontology (CL) | CL:0002614 | neuron of the substantia nigra |
The OVLT integrates circulating signals with central neural circuits: [3]
Inputs: [4]
Outputs:
Blood-Brain Barrier Properties:
The study of Organum Vasculosum Of The Lamina Terminalis (Ovlt) Neurons has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.
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Ganong WF (2000). Circumventricular organs: Definition and role in the regulation of autonomic and neuroendocrine functions. Clinical and Experimental Pharmacology and Physiology. 2000. ↩︎
Price CJ, et al. (2008). Brain Research. 2008. ↩︎
Kanoski SE, Grill HJ (2015). Medial preoptic area receptors mediate leptin and glucose homeostasis. American Journal of Physiology. 2015. ↩︎