1. GPCR/G Protein
    Neuronal Signaling
    Immunology/Inflammation
    Metabolic Enzyme/Protease
  2. Imidazoline Receptor
    NO Synthase
    Endogenous Metabolite
  3. Agmatine sulfate

Agmatine sulfate 

Cat. No.: HY-101238 Purity: >98.0%
Handling Instructions

Agmatine sulfate exerts modulatory action at multiple molecular targets, such as neurotransmitter systems, ion channels and nitric oxide synthesis. It is an endogenous agonist at imidazoline receptor and a NO synthase inhibitor.

For research use only. We do not sell to patients.

Agmatine sulfate Chemical Structure

Agmatine sulfate Chemical Structure

CAS No. : 2482-00-0

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Based on 1 publication(s) in Google Scholar

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Description

Agmatine sulfate exerts modulatory action at multiple molecular targets, such as neurotransmitter systems, ion channels and nitric oxide synthesis. It is an endogenous agonist at imidazoline receptor and a NO synthase inhibitor.

IC50 & Target

Human Endogenous Metabolite

 

In Vitro

Agmatine binds to alpha 2-adrenergic and imidazoline receptors and stimulates release of catecholamines from adrenal chromaffin cells. Its biosynthetic enzyme, arginine decarboxylase, is present in brain. Agmatine, locally synthesized, is an endogenous agonist at imidazoline receptors, a noncatecholamine ligand at alpha 2-adrenergic receptors and may act as a neurotransmitter[1]. Agmatine is synthesized in the brain, stored in synaptic vesicles in regionally selective neurons, accumulated by uptake, released by depolarization, and inactivated by agmatinase. Agmatine inhibits nitric oxide synthase, and induces the release of some peptide hormones[2]. Agmatine, 4-(aminobutyl)guanidine, is produced by decarboxylation of L-arginine by the enzyme arginine decarboxylase. Agmatine is a competitive inhibitor of all NOS isoenzymes but not an NO precursor. Ki values are approximately 660 µM (NOS I), 220 µM (NOS II) and 7.5 mM (NOS III)[3]. Agmatine stimulates nitrite production three-fold above basal nitrite formation by endothelial cells. Agmatine displaces [3H]-idazoxan from endothelial cellmembranes and is found to induce transients in the cytosolic calcium of endothelial cells. The transients could be downregulated by repeated exposure to agmatine but are not affected by pretreatment with norepinephrine[4].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

In Vivo

Agmatine produces an antidepressant-like effect when assessed in the forced swimming test and in the tail suspension test in mice (dose range 0.01-50 mg/kg, i.p.), without accompanying changes in ambulation in an open-field[5]. In ischemic stroke, agmatine protects the blood-brain barrier, which can be monitored in vivo by quantification of permeability by using dynamic contrast-enhanced MR imaging[6]. Agmatine substantially augments the antidepressant-like effect of MK-801, reinforcing the notion that this compound modulates NMDA receptor activation[7].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Molecular Weight

228.27

Formula

C₅H₁₆N₄O₄S

CAS No.

2482-00-0

SMILES

NC(NCCCCN)=N.O=S(O)(O)=O

Shipping

Room temperature in continental US; may vary elsewhere.

Storage
Powder -20°C 3 years
4°C 2 years
In solvent -80°C 6 months
-20°C 1 month
Solvent & Solubility
In Vitro: 

H2O : ≥ 100 mg/mL (438.08 mM)

DMSO : < 1 mg/mL (insoluble or slightly soluble)

*"≥" means soluble, but saturation unknown.

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 4.3808 mL 21.9039 mL 43.8078 mL
5 mM 0.8762 mL 4.3808 mL 8.7616 mL
10 mM 0.4381 mL 2.1904 mL 4.3808 mL
*Please refer to the solubility information to select the appropriate solvent.
References
Animal Administration
[6][7]

Rats: Thirty-four male Sprague-Dawley rats are subjected to transient MCA occlusion for 90 minutes. Immediately after reperfusion, agmatine (100 mg/kg) or normal saline is injected intraperitoneally into the agmatine-treated group (n= 17) or the control group, respectively. MR imaging is performed after reperfusion[6].

Mice: Mice are pretreated with a range of sub-effective doses of either fluoxetine (1, 2.5 and 5 mg/kg, p.o.; a selective serotonin reuptake inhibitor), imipramine (0.01, 0.05 and 0.1 mg/kg, p.o.; a tricyclic antidepressant), bupropion (0.1, 0.5 and 1 mg/kg, p.o.; dopamine reuptake inhibitor with subtle activity on noradrenergic reuptake), or MK-801 (0.0001, 0.0005 and 0.001 mg/kg, p.o.; noncompetitive NMDA receptor antagonist) and immediately after, a sub-effective dose of either agmatine (0.0001 mg/kg p.o.) or vehicle is administered. After 60 min, the animals are subjected to behavioral testing[7].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

References
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Keywords:

AgmatineImidazoline ReceptorNO SynthaseEndogenous MetaboliteNitric oxide synthasesNOSInhibitorinhibitorinhibit

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Agmatine sulfate
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