AVP Gene
Introduction
Avp Gene is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
<div class="infobox infobox-gene"> [@burbach2001]
<div class="infobox-header">AVP</div> [@barberis1998]
<div class="infobox-row"><strong>Full Name:</strong> Arginine Vasopressin</div> [@nakase2008]
<div class="infobox-row"><strong>Chromosome:</strong> 20p13</div> [@donaldson2018]
<div class="infobox-row"><strong>NCBI Gene ID:</strong> [5820](https://www.ncbi.nlm.nih.gov/gene/5820)</div> [@engelmann2019]
<div class="infobox-row"><strong>Ensembl ID:</strong> [ENSG00000101290](https://www.ensembl.org/Homo_sapiens/Gene/Summary?g=ENSG00000101290)</div> [@robinson2020]
<div class="infobox-row"><strong>OMIM:</strong> [192340](https://www.omim.org/entry/192340)</div> [@zingg1998]
<div class="infobox-row"><strong>UniProt:</strong> [P01178](https://www.uniprot.org/uniprot/P01178)</div>
<div class="infobox-row"><strong>Associated Diseases:</strong> [Alzheimer's Disease](/diseases/alzheimers-disease), [Parkinson's Disease](/diseases/parkinsons-disease), Diabetes Insipidus, Syndrome of Inappropriate ADH, Anxiety Disorders</div>
<div class="infobox-row"><strong>Protein Class:</strong> Peptide hormone, GPCR ligand</div>
<div class="infobox-row"><strong>Brain Expression:</strong> High in supraoptic nucleus, paraventricular nucleus</div>
</div>
Overview
Mermaid diagram (expand to render)
Arginine vasopressin (AVP), also known as antidiuretic hormone (ADH), is a 9-amino acid neuropeptide encoded by the AVP gene on chromosome 20p13 that plays critical roles in water retention, blood pressure regulation, and social behavior["@du1954"]. Beyond its peripheral endocrine functions, AVP acts as a central neuropeptide modulating stress responses, social cognition, memory consolidation, and circadian rhythms—all processes relevant to neurodegenerative diseases.
Normal Function
The AVP gene encodes preprovasopressin, which is processed to mature AVP (arginine vasopressin) along with neurophysin I and a glycopeptide. AVP is synthesized primarily in the supraoptic nucleus (SON) and paraventricular nucleus (PVN) of the hypothalamus[@burbach2001].
Peripheral Functions
- Water reabsorption in kidney collecting ducts
- Vasoconstriction and blood pressure regulation
- ACTH release from pituitary (modulates HPA axis)
- Liver glycogenolysis
Central Functions
- Social behavior and pair-bonding
- Stress response modulation
- Memory consolidation
- Circadian rhythm regulation
- Thermoregulation
Neuropeptide Co-transmission
- Co-released with oxytocin in some [neurons](/entities/neurons)
- Interactions with CRH and HPA axis
- Modulates monoaminergic systems
Expression Pattern
AVP is expressed in brain regions involved in social and homeostatic functions:
| Brain Region | Expression Level | Functional Significance |
|--------------|------------------|------------------------|
| Supraoptic Nucleus | Very High | Water balance, stress |
| Paraventricular Nucleus | Very High | HPA axis modulation |
| Bed Nucleus of Stria Terminalis | High | Social behavior |
| Amygdala | Moderate | Emotional processing |
| [Hippocampus](/brain-regions/hippocampus) | Low-Moderate | Memory modulation |
| Lateral Septum | High | Social recognition |
Molecular Mechanisms
AVP signals through three G-protein coupled receptors (V1a, V1b, V2), with V1a and V1b being primarily expressed in the brain[@barberis1998]:
Receptor Signaling
- V1a (AVPR1A): Gq-coupled, phospholipase C activation, increased intracellular calcium
- V1b (AVPR1B): Gq-coupled, similar to V1a, pituitary expression
- V2 (AVPR2): Gs-coupled, adenylate cyclase activation, renal water reabsorption
Central Signaling Pathways
- Phospholipase C activation
- Protein kinase C activation
- Calcium mobilization
- MAPK pathway modulation
Disease Associations
Alzheimer's Disease
AVP system alterations are reported in AD, with changes in receptor expression and peptide levels in specific brain regions[@nakase2008]. AVP may modulate memory consolidation, and its dysregulation could contribute to cognitive deficits.
Parkinson's Disease
AVP is involved in autonomic function, which is affected in PD. Alterations in AVP signaling may contribute to non-motor symptoms including sleep disorders and mood changes.
Diabetes Insipidus
Central diabetes insipidus results from AVP deficiency due to hypothalamic/pituitary pathology. Treatment involves desmopressin (synthetic AVP analog).
Syndrome of Inappropriate ADH Secretion (SIADH)
Excess AVP secretion causes hyponatremia. Seen in various conditions including CNS disorders and malignancies.
Anxiety and Social Behavior
AVP receptor polymorphisms are associated with anxiety disorders and social behavior traits. V1a antagonists explored for anxiety treatment.
Therapeutic Implications
Vasopressin Receptor Ligands
| Drug/Compound | Target | Application | Route |
|--------------|--------|-------------|-------|
| Desmopressin | V2 | Diabetes insipidus | Intranasal, oral |
| Convasopressin | V1a | Vasodilatory shock | IV |
| Tolvaptan | V2 | SIADH, hyponatremia | Oral |
| Relcovaptan | V1a | Preterm labor | Research |
| Nelivaptan | V1b | Depression, anxiety | Research |
CNS Applications
- V1a modulators for anxiety disorders
- Social behavior enhancement
- Memory consolidation effects
- Circadian rhythm disorders
Research Directions
- Brain-penetrant V1a antagonists
- Selective V1b compounds
- AVP as biomarker for neurodegeneration
Animal Models
Knockout Mice
- V1a knockout: altered social behavior
- V1b knockout: reduced stress response
- AVP knockout: diabetes insipidus phenotype
Transgenic Models
- AVP overexpression: enhanced social memory
- Human AVPR1A transgenic studies
Clinical Relevance
AVP system modulation has therapeutic potential:
- Neurodegeneration: Effects on memory and stress
- Psychiatric: Anxiety, depression, social behavior
- Endocrine: Diabetes insipidus, SIADH
- Cardiovascular: Blood pressure regulation
See Also
- [Genes Index](/genes)
- [Proteins Index](/proteins)
- [Alzheimer's Disease](/diseases/alzheimers-disease)
- [Parkinson's Disease](/diseases/parkinsons-disease)
- [Hypothalamus](/brain-regions/hypothalamus)
- [Suprachiasmatic Nucleus](/cell-types/suprachiasmatic-nucleus)
- [Amygdala](/cell-types/basolateral-amygdala)
External Links
- [NCBI Gene: AVP](https://www.ncbi.nlm.nih.gov/gene/5820)
- [UniProt: Vasopressin](https://www.uniprot.org/uniprot/P01178)
- [Ensembl: AVP](https://www.ensembl.org/Homo_sapiens/Gene/Summary?g=ENSG00000101290)
- [Human Protein Atlas: AVP](https://www.proteinatlas.org/gene/AVP)
Background
The study of Avp Gene 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.
References
Du Vigneaud V, Gish DT, Katsoyannis PG, A synthetic preparation possessing biological properties possessed by the natural vasopressin (1954)
[Burbach JP, Luckman SM, Murphy D, Gainer H, Gene regulation in the magnocellular hypothalamo-neurohypophyseal system (2001)](https://pubmed.ncbi.nlm.nih.gov/11427693/)
[Barberis C, Mouillac B, Durroux T, Structural bases of vasopressin/oxytocin receptor function (1998)](https://pubmed.ncbi.nlm.nih.gov/9511659/)
[Nakase S, Tatewaki M, Kudo K, et al, Vasopressin in neurodegenerative diseases (2008)](https://pubmed.ncbi.nlm.nih.gov/19076362/)
[Donaldson ZR, Young LJ, The relative contributions of central oxytocin and vasopressin receptor mechanisms to individual differences in social behavior (2018)](https://pubmed.ncbi.nlm.nih.gov/29952570/)
[Engelmann M, Landgraf R, Wotjak CT, The hypothalamic-neurohypophyseal system regulates social behavior (2019)](https://pubmed.ncbi.nlm.nih.gov/29967370/)
Robinson AG, Verbalis JG, Posterior pituitary (2020)
[Zingg HH, Lefebvre DL, Oxytocin and vasopressin gene expression during gestation and parturition (1998)](https://pubmed.ncbi.nlm.nih.gov/9725056/)Pathway Diagram
The following diagram shows the key molecular relationships involving AVP Gene discovered through SciDEX knowledge graph analysis:
Mermaid diagram (expand to render)