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Title: Kinin  
Author: World Heritage Encyclopedia
Language: English
Subject: Bradykinin, Kallidin, Insect diuretic hormones, Tachykinin peptides, Angiotensin II receptor antagonist
Collection: Kinin–kallikrein System
Publisher: World Heritage Encyclopedia


A kinin is any of various structurally related polypeptides, such as bradykinin and kallikrein.[1] They are members of the autacoid family.[2]

They act locally to induce vasodilation and contraction of smooth muscle.[3]

It is a component of the kinin-kallikrein system.

Their precursors are kininogens.[4]

In botany, plant hormones cytokinins were first called kinins, but the name was changed to avoid confusion.[5]

Aspirin inhibits the activation of kallenogen by interfering with the formation of kallikrien enzyme which is essential in the process of activation.


  1. ^ Kinins. De Gruyter. 2011.  
  2. ^ Kinins at the US National Library of Medicine Medical Subject Headings (MeSH)
  3. ^ "Kinin" at Dorland's Medical Dictionary
  4. ^ Online Medical Dictionary
  5. ^ Galuszka, Petr; Spíchal, Lukáš; Kopečný, David; Tarkowski, Petr; Frébortová, Jitka; Šebela, Marek; Frébort, Ivo (2008). "Metabolism of plant hormones cytokinins and their function in signaling, cell differentiation and plant development". Bioactive Natural Products (Part N). Studies in Natural Products Chemistry 34. pp. 203–64.  

External links

  • The kinin-forming system at

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