Vasopressins

Antidiuretic hormones released by the NEUROHYPOPHYSIS of all vertebrates (structure varies with species) to regulate water balance and OSMOLARITY. In general, vasopressin is a nonapeptide consisting of a six-amino-acid ring with a cysteine 1 to cysteine 6 disulfide bridge or an octapeptide containing a CYSTINE. All mammals have arginine vasopressin except the pig with a lysine at position 8. Vasopressin, a vasoconstrictor, acts on the KIDNEY COLLECTING DUCTS to increase water reabsorption, increase blood volume and blood pressure.

Also Known As:

Vasopressin; Pitressin; Vasopressin (USP); Hormone, Antidiuretic; beta Hypophamine; Antidiuretic Hormone; Antidiuretic Hormones; beta-Hypophamine

Pharmalogical Action Categories:

Antidiuretic Agents
Hemostatics
Vasoconstrictor Agents

Hormones, Hormone Substitutes, and Hormone Antagonists
- Hormones: 80400
  - Peptide Hormones: 1347
    - Pituitary Hormones: 601
      - Posterior Pituitary Hormones: 176
        Vasopressins: 9692
Amino Acids, Peptides, and Proteins: 1
- Proteins: 484843
  - Nerve Tissue Proteins: 2
    - Neuropeptides: 6772
      - Vasopressins: 9692
- Peptides: 82426
  - Neuropeptides: 6772
    - Vasopressins: 9692
  - Peptide Hormones: 1347
    - Pituitary Hormones: 601
      - Posterior Pituitary Hormones: 176
        Vasopressins: 9692
  - Oligopeptides: 519
    - Vasopressins: 9692

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