BRADYKININ, ACETATE SALT, 98

BRADYKININ, ACETATE SALT, 98 Property

storage temp. 

Store at 0°C

solubility 

≥113 mg/mL in DMSO with gentle warming; ≥113.5 mg/mL in EtOH with gentle warming; ≥226.6 mg/mL in H2O

form 

powder

color 

white

Water Solubility 

Soluble in water.

Sequence

Arg-Pro-Pro-Gly-Phe-Ser-Pro-Phe-Arg

Stability:

Hygroscopic

Safety

WGK Germany 

3

HS Code 

2937190000

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P271Use only outdoors or in a well-ventilated area.

P280Wear protective gloves/protective clothing/eye protection/face protection.

BRADYKININ, ACETATE SALT, 98 Chemical Properties,Usage,Production

Chemical Properties

white fine crystalline powder

Uses

Bradykinin Acetate elicits vasoconstriction, a systemic blood pressure reflex, a stimulation of respiration, and contraction of the nictitating membrane. Bradykinin plays an important role in the regulation of fluid and electrolyte balance, smooth muscle contraction, vasodilation and capillary permeability.

Biological Activity

bradykinin (acetate) is a well-known 9-amino acid endogenous vasoactive peptide and a systemic vasodilator [1].bradykinin is a potent endothelium-dependent vasodilator, leading to the reduction in blood pressure. it also induces contraction of non-vascular smooth muscle in the bronchus and gut, increases vascular permeability and is also involved in the mechanism of pain. bradykinin is an inflammatory mediator. the bradykinin b1 receptor is expressed only as a result of tissue injury and plays a role in inflammation. the bradykinin b2 receptor is constitutively expressed and participates in bradykinin's vasodilatory role.in cultured endothelial cells, bradykinin promoted a rapid dissociation of the enos:b2 receptor complex [2]. in the mouse gastrointestinal tract and pancreas, bradykinin stimulated extravasation from postcapillary venules by two- to sevenfold by interacting with b2 receptors and stimulating tachykinin release from sensory nerves [3].in healthy men, bradykinin (100-3200 ng/kg min) dose-related increased plasma concentrations of 6-oxo-pgf1a , the stable hydrolysis product of prostacyclin (pgi2). so bradykinin may have a use as a probe of pg12 production in vivo in pathological states [1].

Biochem/physiol Actions

Bradykinin is a pro-inflammatory peptide that acts through G-protein-coupled receptors. It activates sphingolipid metabolism. Fibroblasts treated with bradykinin produce a rapid and important increase in ceramide which is followed by a transient rise in sphingosine content. The peptide also increases ceramide cellular content by rapidly mobilizing neutral glycolipids. Bradykinin plays an important role in the regulation of fluid and electrolyte balance, smooth muscle contraction, vasodilation and capillary permeability. The bradykinin potentiators, which possess no bradykinin activity themselves, enhance the activity of bradykinin.

in vivo

IC 50

Bradykinin B2 Receptor (B2R); Human Endogenous Metabolite

References

[1]. barrow se, dollery ct, heavey dj, et al. effect of vasoactive peptides on prostacyclin synthesis in man. br j pharmacol. 1986 jan;87(1):243-7.
[2]. ju h, venema vj, marrero mb, et al. inhibitory interactions of the bradykinin b2 receptor with endothelial nitric-oxide synthase. j biol chem. 1998 sep 11;273(37):24025-9.
[3]. figini m, emanueli c, grady ef, et al. substance p and bradykinin stimulate plasma extravasation in the mouse gastrointestinal tract and pancreas. am j physiol. 1997 apr;272(4 pt 1):g785-93.