BRL-44408
BRL-44408 is a selective, blood-brain barrier-permeable α2A-adrenergic receptor antagonist with a Ki value of 8.56 nM against human targets. BRL-44408 exhibits activities such as antidepressant, analgesic effects and attenuation of sepsis-induced acute lung injury by regulating the release of neurotransmitters such as norepinephrine and dopamine, or inhibiting signaling pathways including ERK1/2, p38MAPK and p65. BRL-44408 can be used in studies related to acute respiratory distress syndrome, depression and visceral pain.
For research use only. We do not sell to patients.
- CAS No.: 118343-19-4
- Formula: C13H17N3
- Molecular Weight:215.29
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Storage:
Please store the product under the recommended conditions in the Certificate of Analysis.
Biological Activity
BRL-44408 (0-12.5 h) can inhibit the secretion of proinflammatory cytokines and the phosphorylation of ERK1/2, p38MAPK and p65 in LPS (HY-D1056)-induced NR8383 rat alveolar macrophages, with no effect on the activation of JNK or PKA[1].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
BRL-44408 (10 mg/kg; subcutaneous injection; single administration) significantly elevates extracellular norepinephrine (up to 204%), dopamine (up to 110%) and acetylcholine (up to 75%) levels in the medial prefrontal cortex (mPFC) of rats for at least 3.5 hours post-administration, without altering serotonin levels[2].
BRL-44408 (3-30 mg/kg; i.p.; administered once at 24 h, 5 h and 1 h prior to testing, for a total of 3 times) exerts significant antidepressant-like effects in the forced swimming test in rats, reducing the immobility time by 30% (10 mg/kg) and 49% (30 mg/kg), while increasing the climbing time by 48% (10 mg/kg) and 107% (30 mg/kg)[2].
BRL-44408 (10-30 mg/kg; i.p.; single administration; pretreated 20 minutes before testing) exerts significant antidepressant-like effects in the rat procedure-induced polydipsia test, reducing the additional water intake by 34% (17 mg/kg) and 44% (30 mg/kg), respectively[2].
BRL-44408 (1-30 mg/kg; i.p.; single administration; pretreated 60 minutes prior to PPQ administration) exerts significant analgesic effects in a mouse PPQ visceral pain model, reversing somatic stretching behaviors by 32% (10 mg/kg) and 52% (30 mg/kg), respectively[2].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Animal Model:Sprague-Dawley (male, 260-280 g, ARDS induced via cecal ligation puncture)[1]
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Dosage:5 mg/kg
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Administration:i.p.; single dose (administered 5 hr after CLP)
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Result:Significantly reduced CLP-induced lung wet/dry weight ratio.
Significantly decreased CLP-induced lung injury scores.
Significantly reduced CLP-induced CD68-positive macrophage infiltration in lung tissue.
Significantly decreased serum levels of TNF-α, IL-6, and CXCL2/MIP-2; no significant effect on serum IL-10 levels.
Significantly reduced lung tissue mRNA expression of TNF-α, IL-6, and CXCL2/MIP-2 post-CLP; no significant effect on lung tissue IL-10 mRNA levels.
Markedly inhibited CLP-induced phosphorylation of ERK1/2, p38MAPK, and p65 in lung tissue; no effect on phosphorylation of JNK or PKA.
Increased 7-day survival rate by approximately 20% compared to CLP controls, with no statistically significant difference between groups.
Chemical Information
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CAS No. 118343-19-4
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Molecular Weight 215.29
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Formula C13H17N3
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SMILES
CC1N(CC2=NCCN2)CC3=C1C=CC=C3
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
Please store the product under the recommended conditions in the Certificate of Analysis.
Purity & Documentation
References
[1]. Cong Z, et al. α2A -AR antagonism by BRL-44408 maleate attenuates acute lung injury in rats with downregulation of ERK1/2, p38MAPK, and p65 pathway. J Cell Physiol. 2020;235(10):6905-6914. [Content Brief]
[2]. Dwyer JM, et al. Preclinical characterization of BRL 44408: antidepressant- and analgesic-like activity through selective alpha2A-adrenoceptor antagonism. Int J Neuropsychopharmacol. 2010;13(9):1193-1205. [Content Brief]
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)