2. Signaling Pathways
  3. Neuronal Signaling
  4. Monoamine Oxidase

Monoamine Oxidase

MAO

Monoamine Oxidase

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Monoamine oxidases (MAO) are a family of enzymes that catalyze the oxidation of monoamines. They are found bound to the outer membrane of mitochondria in most cell types in the body. They belong to the protein family of flavin-containing amine oxidoreductases. Monoamine oxidases catalyze the oxidative deamination of monoamines. Oxygen is used to remove an amine group from a molecule, resulting in the corresponding aldehyde and ammonia. Monoamine oxidases contain the covalently bound cofactor FAD and are, thus, classified as flavoproteins. Because of the vital role that MAOs play in the inactivation of neurotransmitters, MAO dysfunction is thought to be responsible for a number of psychiatric and neurological disorders. MAO-A inhibitors act as antidepressant and antianxiety agents, whereas MAO-B inhibitors are used alone or in combination to treat Alzheimer’sand Parkinson’s diseases.

Monoamine Oxidase Isoform Specific Products:

Monoamine Oxidase Isoform Comparison
Cat. No. Product Name Effect Purity Chemical Structure
  • HY-112726
    PXS-4728A
    		Inhibitor 98.79%
    PXS-4728A (BI-1467335) is a potent and orally active semicarbazide-sensitive amine oxidase (SSAO) inhibitor. PXS-4728A inhibits airway inflammation. PXS-4728A has the potential for the research of chronic obstructive pulmonary disease (COPD).
    PXS-4728A
  • HY-70057A
    Safinamide mesylate
    		Inhibitor 99.07%
    Safinamide (FCE 26743; EMD 1195686) mesylate is a potent, selective, and reversible monoamine oxidase B (MAO-B) inhibitor (IC50=0.098 μM) over MAO-A (IC50=580 nM). Safinamide mesylate also blocks sodium channels and modulates glutamate (Glu) release, showing a greater affinity at depolarized (IC50=8?μM) than at resting (IC50=262?μM) potentials. Safinamide mesylate has neuroprotective and neurorescuing effects and can be used for the study of parkinson disease, ischemia stroke et.al.
    Safinamide mesylate
  • HY-114286A
    PXS-5153A monohydrochloride
    		Inhibitor 99.59%
    PXS-5153A monohydrochloride is a potent, selective, orally active and fast-acting lysyl oxidase like 2/3 enzymatic (LOXL2/LOXL3) inhibitor, with an IC50 of <40 nM for LOXL2 across all mammalian species and an IC50 of 63 nM for human LOXL3. PXS-5153A monohydrochloride could reduce crosslinks and ameliorates fibrosis.
    PXS-5153A monohydrochloride
  • HY-Y1322
    Triphenyl phosphate
    		Activator 99.67%
    Triphenyl phosphate is an orally active, blood-brain barrier-permeable aryl organophosphate flame retardant and endocrine disruptor. Triphenyl phosphate disrupts mitochondrial dynamic balance through oxidative stress, induces excessive mitophagy and apoptosis, and ultimately leads to myocardial fibrosis. In the brain, Triphenyl phosphate activates the NF-κB inflammatory pathway by disrupting the gut microbiota, alters tryptophan metabolism and elevates neurotoxins, thereby inducing anxiety- and depression-like behaviors. In the skeletal and reproductive systems, Triphenyl phosphate inhibits osteoblast differentiation and induces germ cell apoptosis by suppressing the MAPK/ERK pathway and activating the JNK signal, respectively. In adipose and placental tissues, Triphenyl phosphate promotes lipid accumulation by activating the PI3K/AKT-PPARγ axis, and disrupts placental metabolism via the MAOA/ROS/NF-κB cascade, impairing neurodevelopment of offspring.
    Triphenyl phosphate
  • HY-N2554
    Osthenol
    		Inhibitor 99.15%
    Osthenol (Ostenol) is a reversible, selective, competitive inhibitor of hMAO-A (IC50=0.74 μM, Ki=0.26 μM), with antifungal and antibacterial activity. Osthenol inhibits the oxidative deamination of hMAO-A and regulates the metabolism of monoamine neurotransmitters. Osthenol also inhibits the PI3K/AKT signaling pathway to induce apoptosis of colon cancer cells, arrest the cell cycle at the G1 phase, and inhibit cell proliferation. Osthenol is mainly used in the study of neurological diseases and cancer, especially depression-related MAO-A targeted intervention and colon cancer.
    Osthenol
  • HY-W015490
    1,4-Naphthoquinone
    		Inhibitor 99.97%
    1,4-Naphthoquinone is an inhibitor with broad-spectrum inhibitory activity targeting DNA polymerase, NF-κB and monoamine oxidase (MAO-A/B), with antibacterial and anti-biofilm efficacy. 1,4-Naphthoquinone is a competitive inhibitor of MAO-B (Ki=1.4 μM) and a non-competitive inhibitor of MAO-A (Ki=7.7 μM). 1,4-Naphthoquinone inhibits DNA polymerase pol α, β, γ, δ, ε, λ with IC50 ranging from 5.57-128 μM. 1,4-Naphthoquinone inhibits tumor cell proliferation, induces apoptosis and necrosis, and has anti-angiogenic and anti-inflammatory activities by inducing oxidative stress, depleting glutathione (GSH), inhibiting DNA polymerase-mediated DNA synthesis and blocking NF-κB nuclear translocation. 1,4-Naphthoquinone can be used in anti-bacterial , anti-tumor and anti-inflammatory studies, including inhibition of melanoma and colon cancer cell growth and endothelial cell function, as well as LPS-induced inflammation models.
    1,4-Naphthoquinone
  • HY-Y0265
    Isatin
    		Inhibitor 99.89%
    Isatin (Indoline-2,3-dione) is a potent inhibitor of monoamine oxidase (MAO) with an IC50 of 3 μM. Also binds to central benzodiazepine receptors (IC50 against clonazepam, 123 μM). Also acts as an antagonist of both atrial natriuretic peptide stimulated and nitric oxide-stimulated guanylate cyclase activity. Shows effect on the serotonergic system.
    Isatin
  • HY-N0126
    Xanthone
    		Inhibitor 99.97%
    Xanthone is a monoamine oxidase A (MAO-A) inhibitor with an IC50 of 0.84 µM. Xanthon inhibits Norepinephrine (HY-13715) and high-K+-induced vasoconstriction with IC50 values of 60.26 μM and 82.9 μM, respectively. Xanthon increases intracellular cyclic adenosine 3′,5′-monophosphate (cAMP) content and blocks Ca2+ channels. Xanthone is the scaffold of several pharmacologically active compounds.
    Xanthone
  • HY-Y0470
    Semicarbazide hydrochloride
    		Inhibitor 98.0%
    Semicarbazide hydrochloride is an orally active urea derivative. Semicarbazide hydrochloride binds to copper or iron in cells. Semicarbazide hydrochloride inhibits the activity of soluble semicarbazide sensitive amine oxidase (SSAO). Semicarbazide hydrochloride damages cartilage, blood vessels, ovaries, testicles, and thyroid follicles.
    Semicarbazide hydrochloride
  • HY-14855B
    Tedizolid phosphate
    		Inhibitor 99.61%
    Tedizolid phosphate (TR-701FA) is a MAO-A and MAO-B inhibitor with activity against Gram-positive bacteria.
    Tedizolid phosphate
  • HY-B1199
    Nialamide
    		Inhibitor
    Nialamide is a non-selective monoamine oxidase (MAO) inhibitor. Nialamide inhibits MAO and regulates ROS production. Nialamide induces hyperkinesis in animals, enhances the anticonvulsant effect of Diphenylhydantoin in mice, increases rectal temperature, and enhances the pressor effect of Norepinephrine. Nialamide can be used in the research of depression, inflammatory diseases, neurodegenerative diseases, and hypertension.
    Nialamide
  • HY-B0884A
    Minaprine dihydrochloride
    		Inhibitor 99.90%
    Minaprine dihydrochloride is a brain-penetrant monoamine oxidase inhibitor. Minaprine dihydrochloride also weakly inhibits acetylcholinesterase (AChE) activity. Minaprine dihydrochloride reduces intraneuronal dopamine metabolism, lowers striatal homovanillic acid and dihydroxyphenylacetic acid levels, and raises striatal 3-methoxytyramine and 5-hydroxytryptamine levels. Minaprine dihydrochloride exhibits convulsant, antidepressant properties.
    Minaprine dihydrochloride
  • HY-N0381
    Maackiain
    		Inhibitor 99.83%
    Maackiain (DL-Maackiain) is an orally active multi-target inhibitor with anti-tumor activity and neuroprotective effects. Maackiain activates the AMPK, NLRP3 and Nrf2/HO-1 pathways, and inhibits key targets such as NF-κB, mTOR, MAO-B, NFATc1 and PKCδ, thereby precisely regulating processes including apoptosis, autophagy and pyroptosis. Maackiain also effectively inhibits microglial activation, osteoclast formation, and proliferation and invasion of tumor cells, and protects dopaminergic neurons from damage. Maackiain is applicable to the research of various diseases such as Alzheimer's disease, osteoporosis, sepsis and dengue fever。
    Maackiain
  • HY-14536A
    Methylene blue (purity≥70%)
    		Inhibitor
    Methylene blue (purity≥70%) is a guanylyl cyclase (sGC), monoamine oxidase A (MAO-A) and NO synthase (NOS) inhibitor. Methylene blue (purity≥70%) is a vasopressor and is often used as a dye in several medical procedures. Methylene blue (purity≥70%) through the nitric oxide syntase/guanylate cyclase signalling pathway to reduce prepulse inhibition. Methylene blue (purity≥70%) is a REDOX cycling compound and able to cross the blood-brain barrier. Methylene blue (purity≥70%) is a Tau aggregation inhibitor. Methylene blue reduces cerebral edema, attenuated microglial activation and reduced neuroinflammation.
    Methylene blue (purity≥70%)
  • HY-E70074
    Monoamine oxidase, plasma
    Monoamine oxidase (EC 1.4.3.4) is an enzyme composed of different polypeptides. Monoamine oxidation catalyzes the oxidative deamination of various biological amines in brain and peripheral tissues by producing hydrogen peroxide. Monoamine oxidase plays an important role in maintaining the regulation of synaptic transmission, emotional behavior and other brain functions.
    Monoamine oxidase, plasma
  • HY-13929
    Isocarboxazid
    		Inhibitor 98.94%
    Isocarboxazid is a non-selective and irreversible inhibitor of monoamine oxidase, with an IC50 of 4.8 μM for rat brain monoamine oxidase in vitro.
    Isocarboxazid
  • HY-103164
    (E)-8-(3-Chlorostyryl)caffeine
    		Inhibitor 99.4%
    (E)-8-(3-Chlorostyryl)caffeine is a selective adenosine A2A receptor antagonist. (E)-8-(3-Chlorostyryl)caffeine inhibits monoamine oxidase B (MAO-B) with a Ki value of 70 nM by a pathway that is independent of its actions on the A2A receptor. (E)-8-(3-Chlorostyryl)caffeine has the potential for Parkinson's disease research.
    (E)-8-(3-Chlorostyryl)caffeine
  • HY-19915
    Contezolid
    		Inhibitor 99.37%
    Contezolid (MRX-I), a new and orally active oxazolidinone, is an antibiotic in study for complicated skin and soft tissue infections (cSSTI) caused by resistant Gram-positive bacteria. Contezolid (MRX-I) markedly reduces potential for myelosuppression and monoamine oxidase inhibition (MAOI).
    Contezolid
  • HY-148983
    Hydroxylamine (50% w/w in water)
    		Inhibitor
    Hydroxylamine (50% w/w in water) is an inorganic highly reactive compound and antibacterial agent. Hydroxylamine (50% w/w in water) acutely activates the transport activity of GLUT1, inhibits Monoamine oxidase activity. Hydroxylamine (50% w/w in water) inhibits nitrite oxidizing bacteria. Hydroxylamine (50% w/w in water) activates glucose uptake. Hydroxylamine (50% w/w in water) can be used in the research of inflammatory diseases and allergies[1][2][3][4].
    Hydroxylamine (50% w/w in water)
  • HY-N0026
    2'-Acetylacteoside
    		Inhibitor 99.73%
    2'-Acetylacteoside (2'-AA) is a natural compound with oral activity and blood-brain barrier permeability. 2'-Acetylacteosideexhibits MAO‑B inhibitory activity (IC50 = 17.71 μM, Ki = 13.81 μM). 2'-Acetylacteoside downregulates the expression of RANK, TRAF6, NF‑κB, NFATc1 and IKKβ, disrupts the RANKL/RANK interaction, blocks downstream signaling pathways, and increases the level of phosphorylated Akt. 2'-Acetylacteoside possesses potent anti-osteoclastogenic, anti-bone resorptive, pro-neurogenic, neuroprotective and antioxidant activities. 2'-Acetylacteoside can be used in the research of osteoporosis, ischemic stroke and Parkinson's disease.
    2'-Acetylacteoside
Cat. No. Product Name / Synonyms Application Reactivity
Monoamine Oxidase Isoform Comparison

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