NAPAP
NAPAP is a selective direct thrombin inhibitor. NAPAP rapidly binds to thrombin and inhibits its activity, and reduces LPS (HY-D1056)-induced brain inflammation and coagulation factor expression in vivo. NAPAP can be used in studies related to coagulation and neuroinflammation.
For research use only. We do not sell to patients.
- CAS No.: 137171-40-5
- Formula: C27H31N5O4S
- Molecular Weight:521.63
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Storage:
Please store the product under the recommended conditions in the Certificate of Analysis.
Biological Activity
Description
In Vitro
The D-enantiomer of NAPAP is a highly selective, potent direct thrombin inhibitor with a Ki of 0.0021 μM for thrombin, fast binding kinetics, and weak activity against trypsin, factor Xa, and plasmin[1].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only. Further protocols information, click here.
In Vivo
NAPAP (0.75 mg/kg; intraperitoneal injection; single administration) significantly reduces the hippocampal expression of pro-inflammatory markers and coagulation factors induced by LPS (HY-D1056) in male C57BL/6 mice[2].
NAPAP (400-1300 mg/kg; intraperitoneal injection; single administration) induces dose-dependent mortality, hepatotoxicity, and hepatic covalent binding in male ddY mice, with an LD50 of 820 mg/kg in control animals, while LPS pretreatment attenuates these toxic effects in a dose-dependent manner[3].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Animal Model:C57BL/6 (8-week-old, male)[2]
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Dosage:0.75 mg/kg
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Administration:i.p.; single concurrent dose with LPS injection
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Result:Reduced hippocampal gene expression of TNFα, CXL9, CCL1.
Reduced hippocampal gene expression of coagulation factor FX, PAR1.
Chemical Information
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CAS No. 137171-40-5
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Molecular Weight 521.63
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Formula C27H31N5O4S
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SMILES
N=C(N)C(C=C1)=CC=C1C[C@H](C(N2CCCCC2)=O)NC(CNS(=O)(C3=CC4=C(C=CC=C4)C=C3)=O)=O
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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.
Protocols
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RNA extraction experimental
By lysing cells, releasing RNA, and removing impurities such as proteins and DNA, high-purity RNA products are finally obtained. The commonly used traditional method is the guanidine isothiocyanate/phenol/chloroform method (Trizol), which is suitable for a variety of animal materials including animal tissues, microorganisms, cultured cells, etc., and most plant materials.
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Research Protocol for Inflammation-related Diseases
The NLRP3 inflammasome is a cytosolic innate immune signaling platform that integrates priming signals and danger-signal activation to promote caspase-1 activation, maturation of IL-1β and IL-18, and gasdermin D-mediated pyroptotic cell death. The core experimental logic is to determine whether inflammatory disease phenotypes are driven by increased NLRP3 expression, ASC-containing inflammasome assembly, caspase-1 cleavage, GSDMD cleavage, and extracellular release of IL-1β/IL-18 rather than by nonspecific cell injury alone. The pathway is strongly linked to inflammation-related disease phenotypes because monosodium urate crystals activate NALP3/NLRP3 inflammasome signaling in gout-like crystal inflammation, cholesterol crystals activate NLRP3 inflammasomes in atherogenesis models, and DSS-induced intestinal inflammation has been reported to involve NLRP3 inflammasome activity. However, experimental colitis studies also show context-dependent protective effects of NLRP3 inflammasome co
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Research Protocol for Neurological Diseases
PINK1/Parkin-mediated mitophagy pathway is a mitochondrial quality-control signaling axis in which mitochondrial depolarization stabilizes PINK1 on damaged mitochondria, activates Parkin recruitment and E3 ubiquitin ligase activity, promotes ubiquitination of outer mitochondrial membrane proteins, recruits selective autophagy adaptors, and drives lysosomal degradation of damaged mitochondria. In neurological disease research, this pathway is experimentally important because neurons, especially dopaminergic neurons, are highly dependent on mitochondrial integrity, and defective mitochondrial turnover can lead to mitochondrial dysfunction, oxidative stress, impaired neuronal survival, α-synuclein accumulation, and neuroinflammatory damage-associated signals. The genetic disease link is strongest in Parkinson’s disease because mutations in PRKN/parkin cause autosomal recessive juvenile parkinsonism, mutations in PINK1 cause hereditary early-onset Parkinson’s disease, and Drosophila studie
Purity & Documentation
References
[1]. Steinmetzer T, et al. Structure-activity relationships of new NAPAP-analogs. J Enzyme Inhib Med Chem. 2002;17(2):241-249. [Content Brief]
[2]. Shavit Stein E, et al. Thrombin Inhibition Reduces the Expression of Brain Inflammation Markers upon Systemic LPS Treatment. Neural Plast. 2018;2018:7692182. Published 2018 Jun 19. [Content Brief]
[3]. Ishikawa M, et al. Antidotal effect of lipopolysaccharide against acetaminophen-induced mortality in mice. Pharmacol Toxicol. 1990;67(5):387-391. [Content Brief]
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)