Сравнение
Desmopressin vs. Octreotide
Два пептида рядом — идентичность, доказательная база, правовой статус и известные нежелательные явления.
Идентичность
Категория
Исследования (прочее)
Исследования (прочее)
Номер CAS
16679-58-6
83150-76-9
Молекулярная масса
1069.2 g/mol
1019.24 g/mol
Период полувыведения
3 h
1.7 h
Последовательность
Mpa-Tyr-Phe-Gln-Asn-Cys-Pro-D-Arg-Gly-NH2 (Disulfid 1-6)D-Phe-Cys-Phe-D-Trp-Lys-Thr-Cys-Thr(ol)Механизм действия
Desmopressin
Desmopressin is a structurally modified analogue of the nine-residue peptide hormone vasopressin. Deamination at the N-terminus (1-deamino) and replacement of L-arginine by D-arginine at position 8 prolong the duration of action and render the compound largely selective for the vasopressin V2 receptor, while the V1-mediated vasoconstrictive effect is strongly reduced. Acting on V2 receptors in the renal collecting ducts, it promotes insertion of aquaporin-2 water channels into the apical membrane, increasing water reabsorption and reducing urine volume (antidiuretic effect). In addition, via V2 receptors on the vascular endothelium, desmopressin stimulates the release of von Willebrand factor and factor VIII from endothelial stores (Weibel-Palade bodies), improving primary haemostasis.
Octreotide
Octreotide is a cyclic octapeptide that selectively binds somatostatin-receptor subtypes SSTR2 and SSTR5. Via G-protein-coupled signalling, adenylyl cyclase is inhibited, reducing the secretion of multiple hormones (growth hormone, IGF-1, glucagon, insulin, VIP, serotonin). Structural stabilisation via a disulfide bridge and D-amino acids extends the half-life relative to natural somatostatin (minutes to several hours).
Доказательная база
Наивысшая доказательность
РКИ на людях
РКИ на людях
Исследования
4
5
из них на людях
4
4
Зафиксированные эффекты
4
3
Открытые противоречия
1
1
Задокументированные нежелательные явления
2
2
Правовой статус
Полные записи
Frequently asked questions
- What is the difference between Desmopressin and Octreotide?
- Desmopressin is classified as "Исследования (прочее)", while Octreotide is classified as "Исследования (прочее)". Desmopressin: Desmopressin (DDAVP) is a synthetic analogue of the endogenous hormone vasopressin (antidiuretic hormone, ADH). Deamination of the first amino acid and substitution of L-arginine with D-arginine give it selective activity at the V2 receptor with strongly reduced pressor (V1) activity. It has been approved for decades for indications including central diabetes insipidus, primary nocturnal enuresis, and bleeding tendency in von Willebrand disease type 1 and mild haemophilia A. The principal safety concern is hyponatremia or water intoxication. Octreotide: Synthetic octapeptide somatostatin analog with a longer half-life than endogenous somatostatin. FDA- and EMA-approved since the 1980s for acromegaly and neuroendocrine tumours. This page contrasts both neutrally and source-based — with no usage or dosing recommendation.
- Which peptide is better supported by science, Desmopressin or Octreotide?
- The highest available evidence level is "РКИ на людях" for Desmopressin and "РКИ на людях" for Octreotide. A higher evidence level means more robust data, but says nothing about suitability for an individual. The full body of evidence is on each peptide's own page.
- What is the legal status of Desmopressin and Octreotide in Germany and the United States?
- Германия: Desmopressin — Рецептурный, Octreotide — Рецептурный. США: Desmopressin — Рецептурный, Octreotide — Рецептурный. These are factual summaries with source and review date on the individual pages.