1. Immunology/Inflammation Metabolic Enzyme/Protease
  2. NO Synthase Endogenous Metabolite
  3. L-NMMA hydrochloride

L-NMMA hydrochloride  (Synonyms: Tilarginine hydrochloride; Methylarginine hydrochloride)

Cat. No.: HY-18732C
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L-NMMA (Tilarginine) hydrochloride is a non-selective and competitive inhibitor of nitric oxide synthase. L-NMMA hydrochloride inhibits three subtypes, namely nNOS, eNOS, and iNOS, and reduces NO production. L-NMMA hydrochloride alleviates mechanical allodynia, thermal hyperalgesia, and choroidal fibrosis. L-NMMA hydrochloride is applicable to research related to nociception, bone cancer pain, and myopia.

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

CAS No. : 156706-47-7

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Top Publications Citing Use of Products

    L-NMMA hydrochloride purchased from MedChemExpress. Usage Cited in: Nat Immunol. 2023 Jan;24(1):162-173.  [Abstract]

    L-NMMA acetate (200 μM; 48 h) led to elevating ammonia and inhibiting CD8+ TM cell induction, in parallel with the inhibition of NO production.

    L-NMMA hydrochloride purchased from MedChemExpress. Usage Cited in: Nat Immunol. 2023 Jan;24(1):162-173.  [Abstract]

    L-NMMA acetate (100 μM; 48 h) led to the accumulation of m + 1 arginine and a slowed nitrogen flow in CD8+ TM cells.

    L-NMMA hydrochloride purchased from MedChemExpress. Usage Cited in: Nat Immunol. 2023 Jan;24(1):162-173.  [Abstract]

    L-NMMA acetate (100 μM; 48 h) blocked formation of CD8+ TM cells.

    L-NMMA hydrochloride purchased from MedChemExpress. Usage Cited in: Nat Immunol. 2023 Jan;24(1):162-173.  [Abstract]

    CD8+ TM cells were treated with L-NMMA acetate (100 μM; 48 h) and the level of urea was analyzed.

    L-NMMA hydrochloride purchased from MedChemExpress. Usage Cited in: Nat Immunol. 2023 Jan;24(1):162-173.  [Abstract]

    IL-15-derived CD8+ TM cells were treated with L-NMMA acetate (100 μM; 48 h), then were cultured with [U4] 15N-arginine for 6 hours and LC-MS/MS analysis was performed for m + 2, m + 3 citrulline, m + 2 ornithine and m + 2 urea.

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    Description

    L-NMMA (Tilarginine) hydrochloride is a non-selective and competitive inhibitor of nitric oxide synthase. L-NMMA hydrochloride inhibits three subtypes, namely nNOS, eNOS, and iNOS, and reduces NO production. L-NMMA hydrochloride alleviates mechanical allodynia, thermal hyperalgesia, and choroidal fibrosis. L-NMMA hydrochloride is applicable to research related to nociception, bone cancer pain, and myopia[1][2][3].

    In Vivo

    L-NMMA (50 µg; i.t.; single administration) hydrochloride significantly alleviates bone cancer-induced mechanical allodynia and thermal hyperalgesia in mice at 2 and 12 h post-treatment[1].
    L-NMMA (20 nmol; intravitreal injection; once every other day; 2 to 4 weeks) hydrochloride alleviates choroidal fibrosis and delays myopia progression by inhibiting the NO signaling pathway in lens-induced myopic guinea pigs[2].

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

    Animal Model: C3H/HeJ (male, 4-6 weeks old, 20-22 g, intramedullary inoculation of NCTC 2472 osteosarcoma cells)[1]
    Dosage: 50 µg
    Administration: i.t.; single administration
    Result: Increased paw withdrawal mechanical threshold to 0.90 g at 2 h and 0.63 g at 12 h compared to 0.40 g in vehicle-treated tumor mice.
    Increased paw withdrawal thermal latency to 16.2 sec at 2 h and 12.7 sec at 12 h compared to 10.1 sec in vehicle-treated tumor mice.
    Lost analgesic effect at 24 h post-administration.
    Animal Model: British short-haired tricolor guinea pigs (2-week-old, 110-130 g, lens-induced myopia model)[2]
    Dosage: 20 nmol
    Administration: intravitreal injection; once every other day; 2 and 4 weeks
    Result: Increased refraction significantly after 2 and 4 weeks compared to the lens-induced myopia group.
    Reduced the D-value of axial length between the myopic eye and control eye significantly after 2 and 4 weeks compared to the lens-induced myopia group.
    Increased choroidal thickness to 80.62 μm at 4 weeks compared to 63.54 μm in the lens-induced myopia group.
    Reduced degradation of choroidal pigment particles and narrowed particle gaps compared to the lens-induced myopia group.
    Produced denser, more orderly choroidal tissue structure compared to the lens-induced myopia group.
    Reduced choroidal fibrosis compared to the lens-induced myopia group.
    Lowered gene expression levels of NOS1, NOS3, TGF-β1, COL I, and α-SMA significantly after 2 and 4 weeks compared to the lens-induced myopia group.
    Lowered protein levels of NOS1, NOS3, TGF-β1, COL I, and α-SMA significantly after 2 and 4 weeks compared to the lens-induced myopia group.
    Reduced expression of COL I, α-SMA, NOS1, NOS3, and TGF-β1 in choroidal tissues compared to the lens-induced myopia group.
    Molecular Weight

    224.69

    Formula

    C7H17ClN4O2

    CAS No.
    SMILES

    N[C@@H](CCCNC(NC)=N)C(O)=O.Cl

    Shipping

    Room temperature in continental US; may vary elsewhere.

    Storage

    Please store the product under the recommended conditions in the Certificate of Analysis.

    Purity & Documentation
    References
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    • Do most proteins show cross-species activity?

      Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

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