Review



cnqx  (Tocris)


Bioz Verified Symbol Tocris is a verified supplier
Bioz Manufacturer Symbol Tocris manufactures this product  
  • Logo
  • About
  • News
  • Press Release
  • Team
  • Advisors
  • Partners
  • Contact
  • Bioz Stars
  • Bioz vStars
  • 96

    Structured Review

    Tocris cnqx
    Effects of serotonin and 5-HT receptor compounds on ARN KISS neuron firing in acute brain slices from diestrous female mice. (A) Robust excitatory effect of 90 seconds puff of 40 µM serotonin on firing rate of a middle ARN kisspeptin neuron. (B) Inhibitory effect of 90 seconds puff of 60 µM serotonin on firing rate of a caudal ARN kisspeptin neuron initially stimulated to fire by a 200 nM puff of NKB. (C) Rostral ARN kisspeptin neuron not responding to 60 µM puffs of serotonin but later activated by NKB. (D) Summary of percentage of rostral (rARN), middle (mARN), and caudal (cARN) kisspeptin neurons excited or inhibited by serotonin. (E) Caudal ARN kisspeptin neuron activated by serotonin (40 µM) in the absence and presence of methiothepin (100 µM). (F) Middle ARN kisspeptin neuron in which the excitatory effect of serotonin (40 µM) is blocked by methiothepin (100 µM). (G) Middle ARN kisspeptin neuron activated by serotonin (40 µM) in the absence and presence of SB228357 (100 µM). (H) Caudal ARN kisspeptin neuron in which zacopride (2 µM) facilitates serotonin excitation. (I) Whole-cell recording from an ARN KISS neuron in the continuous presence of TTX, <t>CNQX,</t> <t>DAP5,</t> and bicuculline, showing depolarization during bath application of 5-HT (30 µM). (J) Summary of mean membrane potential measured predrug, during 5-HT application, and following wash ( P < .001; n = 4 animals).
    Cnqx, supplied by Tocris, used in various techniques. Bioz Stars score: 96/100, based on 2914 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
    https://www.bioz.com/product/cnqx/CNQX/pmc13069482-35-9-12
    Average 96 stars, based on 2914 article reviews
    cnqx - by Bioz Stars, 2026-10
    96/100 stars

    Images

    1) Product Images from "Robust serotonin activation of the kisspeptin GnRH pulse generator in male and female mice"

    Article Title: Robust serotonin activation of the kisspeptin GnRH pulse generator in male and female mice

    Journal: Endocrinology

    doi: 10.1210/endocr/bqag034

    Effects of serotonin and 5-HT receptor compounds on ARN KISS neuron firing in acute brain slices from diestrous female mice. (A) Robust excitatory effect of 90 seconds puff of 40 µM serotonin on firing rate of a middle ARN kisspeptin neuron. (B) Inhibitory effect of 90 seconds puff of 60 µM serotonin on firing rate of a caudal ARN kisspeptin neuron initially stimulated to fire by a 200 nM puff of NKB. (C) Rostral ARN kisspeptin neuron not responding to 60 µM puffs of serotonin but later activated by NKB. (D) Summary of percentage of rostral (rARN), middle (mARN), and caudal (cARN) kisspeptin neurons excited or inhibited by serotonin. (E) Caudal ARN kisspeptin neuron activated by serotonin (40 µM) in the absence and presence of methiothepin (100 µM). (F) Middle ARN kisspeptin neuron in which the excitatory effect of serotonin (40 µM) is blocked by methiothepin (100 µM). (G) Middle ARN kisspeptin neuron activated by serotonin (40 µM) in the absence and presence of SB228357 (100 µM). (H) Caudal ARN kisspeptin neuron in which zacopride (2 µM) facilitates serotonin excitation. (I) Whole-cell recording from an ARN KISS neuron in the continuous presence of TTX, CNQX, DAP5, and bicuculline, showing depolarization during bath application of 5-HT (30 µM). (J) Summary of mean membrane potential measured predrug, during 5-HT application, and following wash ( P < .001; n = 4 animals).
    Figure Legend Snippet: Effects of serotonin and 5-HT receptor compounds on ARN KISS neuron firing in acute brain slices from diestrous female mice. (A) Robust excitatory effect of 90 seconds puff of 40 µM serotonin on firing rate of a middle ARN kisspeptin neuron. (B) Inhibitory effect of 90 seconds puff of 60 µM serotonin on firing rate of a caudal ARN kisspeptin neuron initially stimulated to fire by a 200 nM puff of NKB. (C) Rostral ARN kisspeptin neuron not responding to 60 µM puffs of serotonin but later activated by NKB. (D) Summary of percentage of rostral (rARN), middle (mARN), and caudal (cARN) kisspeptin neurons excited or inhibited by serotonin. (E) Caudal ARN kisspeptin neuron activated by serotonin (40 µM) in the absence and presence of methiothepin (100 µM). (F) Middle ARN kisspeptin neuron in which the excitatory effect of serotonin (40 µM) is blocked by methiothepin (100 µM). (G) Middle ARN kisspeptin neuron activated by serotonin (40 µM) in the absence and presence of SB228357 (100 µM). (H) Caudal ARN kisspeptin neuron in which zacopride (2 µM) facilitates serotonin excitation. (I) Whole-cell recording from an ARN KISS neuron in the continuous presence of TTX, CNQX, DAP5, and bicuculline, showing depolarization during bath application of 5-HT (30 µM). (J) Summary of mean membrane potential measured predrug, during 5-HT application, and following wash ( P < .001; n = 4 animals).

    Techniques Used: Membrane

    Related Articles

    Blocking Assay:

    Article Title: Reversing Pathophysiology in Fragile X Syndrome Mice by Promoting PGC-1α and Mitochondrial Functions
    Article Snippet: .. To pharmacologically block fast synaptic transmission, 20 μM CNQX (Tocris, #1045), 200 μM DL-APV (Tocris, #3693), and 20 μM bicuculline (Tocris, #0131) were added to the external solution. ..

    Article Title: The atypical adhesion GPCR ADGRA1 controls hippocampal inhibitory circuit function.
    Article Snippet: AMPAR- and NMDAR-excitatory postsynaptic currents (EPSCs) were pharmacologically isolated by adding the γ-aminobutyric acid receptor blocker picrotoxin (50 μM; Tocris, Cat#1128) to the extracellular bath solution. .. Inhibitory postsynaptic currents (IPSCs) were isolated by adding AP5 (50 μM; Tocris Cat#0106) and CNQX (10 μM; Tocris, Cat1045) to the extracellular bath solution to block NMDA and AMPA receptors, respectively. .. Spontaneous miniature postsynaptic currents (mEPSCs and mIPSCs) were monitored in the presence of tetrodotoxin (1 μM; Tocris, Cat#1069) to block action potential triggered neurotransmitter release.

    Transmission Assay:

    Article Title: Reversing Pathophysiology in Fragile X Syndrome Mice by Promoting PGC-1α and Mitochondrial Functions
    Article Snippet: .. To pharmacologically block fast synaptic transmission, 20 μM CNQX (Tocris, #1045), 200 μM DL-APV (Tocris, #3693), and 20 μM bicuculline (Tocris, #0131) were added to the external solution. ..

    Imaging:

    Article Title: APOE is a presynaptic protein that accumulates with age and modulates neurotransmitter release
    Article Snippet: Standard imaging media (extracellular fluid; ECF) consisting of 140 mM NaCl, 3 mM KCl, 1.5 mM CaCl 2 , 1 mM MgCl 2 , 5.5 mM glucose, 10 mM HEPES (pH 7.3), B27 (Gibco), GlutaMAX (Gibco) were used for imaging experiments. .. For iGluSnFR and pHluorin stimulated release experiments, 50 μM D-AP5 (Tocris; 0106), 20 μM CNQX (Tocris; 1045), and 100 μM picrotoxin (Tocris; 1128) were added to the imaging media. .. For spontaneous iGluSnFR imaging, 1 μM tetrodotoxin (Tocris; 1069) was added to the imaging media.

    Isolation:

    Article Title: The atypical adhesion GPCR ADGRA1 controls hippocampal inhibitory circuit function.
    Article Snippet: AMPAR- and NMDAR-excitatory postsynaptic currents (EPSCs) were pharmacologically isolated by adding the γ-aminobutyric acid receptor blocker picrotoxin (50 μM; Tocris, Cat#1128) to the extracellular bath solution. .. Inhibitory postsynaptic currents (IPSCs) were isolated by adding AP5 (50 μM; Tocris Cat#0106) and CNQX (10 μM; Tocris, Cat1045) to the extracellular bath solution to block NMDA and AMPA receptors, respectively. .. Spontaneous miniature postsynaptic currents (mEPSCs and mIPSCs) were monitored in the presence of tetrodotoxin (1 μM; Tocris, Cat#1069) to block action potential triggered neurotransmitter release.



    Similar Products

    95
    MedChemExpress cnqx
    Cnqx, supplied by MedChemExpress, used in various techniques. Bioz Stars score: 95/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
    https://www.bioz.com/product/cnqx/CNQX/pm42154607-192-7-27
    Average 95 stars, based on 1 article reviews
    cnqx - by Bioz Stars, 2026-10
    95/100 stars
      Buy from Supplier

    95
    Alomone Labs cnqx
    Cnqx, supplied by Alomone Labs, used in various techniques. Bioz Stars score: 95/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
    https://www.bioz.com/product/cnqx/CNQX/bio_rxiv__64898__2026__05__01__719272-186-8-9
    Average 95 stars, based on 1 article reviews
    cnqx - by Bioz Stars, 2026-10
    95/100 stars
      Buy from Supplier

    86
    Hello Bio Inc cnqx
    Cnqx, supplied by Hello Bio Inc, used in various techniques. Bioz Stars score: 86/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
    https://www.bioz.com/product/cnqx/cnqx/pmc13058980-71-0-2
    Average 86 stars, based on 1 article reviews
    cnqx - by Bioz Stars, 2026-10
    86/100 stars
      Buy from Supplier

    95
    MedChemExpress ampa receptor antagonist cnqx
    Ampa Receptor Antagonist Cnqx, supplied by MedChemExpress, used in various techniques. Bioz Stars score: 95/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
    https://www.bioz.com/product/cnqx/CNQX/pm42174628-83-40-45
    Average 95 stars, based on 1 article reviews
    ampa receptor antagonist cnqx - by Bioz Stars, 2026-10
    95/100 stars
      Buy from Supplier

    cnqx  (Tocris)
    96
    Tocris cnqx
    Effects of serotonin and 5-HT receptor compounds on ARN KISS neuron firing in acute brain slices from diestrous female mice. (A) Robust excitatory effect of 90 seconds puff of 40 µM serotonin on firing rate of a middle ARN kisspeptin neuron. (B) Inhibitory effect of 90 seconds puff of 60 µM serotonin on firing rate of a caudal ARN kisspeptin neuron initially stimulated to fire by a 200 nM puff of NKB. (C) Rostral ARN kisspeptin neuron not responding to 60 µM puffs of serotonin but later activated by NKB. (D) Summary of percentage of rostral (rARN), middle (mARN), and caudal (cARN) kisspeptin neurons excited or inhibited by serotonin. (E) Caudal ARN kisspeptin neuron activated by serotonin (40 µM) in the absence and presence of methiothepin (100 µM). (F) Middle ARN kisspeptin neuron in which the excitatory effect of serotonin (40 µM) is blocked by methiothepin (100 µM). (G) Middle ARN kisspeptin neuron activated by serotonin (40 µM) in the absence and presence of SB228357 (100 µM). (H) Caudal ARN kisspeptin neuron in which zacopride (2 µM) facilitates serotonin excitation. (I) Whole-cell recording from an ARN KISS neuron in the continuous presence of TTX, <t>CNQX,</t> <t>DAP5,</t> and bicuculline, showing depolarization during bath application of 5-HT (30 µM). (J) Summary of mean membrane potential measured predrug, during 5-HT application, and following wash ( P < .001; n = 4 animals).
    Cnqx, supplied by Tocris, used in various techniques. Bioz Stars score: 96/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
    https://www.bioz.com/product/cnqx/CNQX/pmc13069482-35-9-12
    Average 96 stars, based on 1 article reviews
    cnqx - by Bioz Stars, 2026-10
    96/100 stars
      Buy from Supplier

    95
    MedChemExpress p re ss drugs nmda medchemexpress hy 17551 ampa medchemexpress hy 17551 cnqx medchemexpress hy
    Effects of serotonin and 5-HT receptor compounds on ARN KISS neuron firing in acute brain slices from diestrous female mice. (A) Robust excitatory effect of 90 seconds puff of 40 µM serotonin on firing rate of a middle ARN kisspeptin neuron. (B) Inhibitory effect of 90 seconds puff of 60 µM serotonin on firing rate of a caudal ARN kisspeptin neuron initially stimulated to fire by a 200 nM puff of NKB. (C) Rostral ARN kisspeptin neuron not responding to 60 µM puffs of serotonin but later activated by NKB. (D) Summary of percentage of rostral (rARN), middle (mARN), and caudal (cARN) kisspeptin neurons excited or inhibited by serotonin. (E) Caudal ARN kisspeptin neuron activated by serotonin (40 µM) in the absence and presence of methiothepin (100 µM). (F) Middle ARN kisspeptin neuron in which the excitatory effect of serotonin (40 µM) is blocked by methiothepin (100 µM). (G) Middle ARN kisspeptin neuron activated by serotonin (40 µM) in the absence and presence of SB228357 (100 µM). (H) Caudal ARN kisspeptin neuron in which zacopride (2 µM) facilitates serotonin excitation. (I) Whole-cell recording from an ARN KISS neuron in the continuous presence of TTX, <t>CNQX,</t> <t>DAP5,</t> and bicuculline, showing depolarization during bath application of 5-HT (30 µM). (J) Summary of mean membrane potential measured predrug, during 5-HT application, and following wash ( P < .001; n = 4 animals).
    P Re Ss Drugs Nmda Medchemexpress Hy 17551 Ampa Medchemexpress Hy 17551 Cnqx Medchemexpress Hy, supplied by MedChemExpress, used in various techniques. Bioz Stars score: 95/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
    https://www.bioz.com/product/cnqx/NMDA/pm42032059-416-5-10
    Average 95 stars, based on 1 article reviews
    p re ss drugs nmda medchemexpress hy 17551 ampa medchemexpress hy 17551 cnqx medchemexpress hy - by Bioz Stars, 2026-10
    95/100 stars
      Buy from Supplier

    86
    Biotrend Chemicals cnqx
    Effects of serotonin and 5-HT receptor compounds on ARN KISS neuron firing in acute brain slices from diestrous female mice. (A) Robust excitatory effect of 90 seconds puff of 40 µM serotonin on firing rate of a middle ARN kisspeptin neuron. (B) Inhibitory effect of 90 seconds puff of 60 µM serotonin on firing rate of a caudal ARN kisspeptin neuron initially stimulated to fire by a 200 nM puff of NKB. (C) Rostral ARN kisspeptin neuron not responding to 60 µM puffs of serotonin but later activated by NKB. (D) Summary of percentage of rostral (rARN), middle (mARN), and caudal (cARN) kisspeptin neurons excited or inhibited by serotonin. (E) Caudal ARN kisspeptin neuron activated by serotonin (40 µM) in the absence and presence of methiothepin (100 µM). (F) Middle ARN kisspeptin neuron in which the excitatory effect of serotonin (40 µM) is blocked by methiothepin (100 µM). (G) Middle ARN kisspeptin neuron activated by serotonin (40 µM) in the absence and presence of SB228357 (100 µM). (H) Caudal ARN kisspeptin neuron in which zacopride (2 µM) facilitates serotonin excitation. (I) Whole-cell recording from an ARN KISS neuron in the continuous presence of TTX, <t>CNQX,</t> <t>DAP5,</t> and bicuculline, showing depolarization during bath application of 5-HT (30 µM). (J) Summary of mean membrane potential measured predrug, during 5-HT application, and following wash ( P < .001; n = 4 animals).
    Cnqx, supplied by Biotrend Chemicals, used in various techniques. Bioz Stars score: 86/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
    https://www.bioz.com/product/cnqx/cnqx/10__1523_slash_jneurosci__1956___25__2026-118-5-8
    Average 86 stars, based on 1 article reviews
    cnqx - by Bioz Stars, 2026-10
    86/100 stars
      Buy from Supplier

    Image Search Results


    Effects of serotonin and 5-HT receptor compounds on ARN KISS neuron firing in acute brain slices from diestrous female mice. (A) Robust excitatory effect of 90 seconds puff of 40 µM serotonin on firing rate of a middle ARN kisspeptin neuron. (B) Inhibitory effect of 90 seconds puff of 60 µM serotonin on firing rate of a caudal ARN kisspeptin neuron initially stimulated to fire by a 200 nM puff of NKB. (C) Rostral ARN kisspeptin neuron not responding to 60 µM puffs of serotonin but later activated by NKB. (D) Summary of percentage of rostral (rARN), middle (mARN), and caudal (cARN) kisspeptin neurons excited or inhibited by serotonin. (E) Caudal ARN kisspeptin neuron activated by serotonin (40 µM) in the absence and presence of methiothepin (100 µM). (F) Middle ARN kisspeptin neuron in which the excitatory effect of serotonin (40 µM) is blocked by methiothepin (100 µM). (G) Middle ARN kisspeptin neuron activated by serotonin (40 µM) in the absence and presence of SB228357 (100 µM). (H) Caudal ARN kisspeptin neuron in which zacopride (2 µM) facilitates serotonin excitation. (I) Whole-cell recording from an ARN KISS neuron in the continuous presence of TTX, CNQX, DAP5, and bicuculline, showing depolarization during bath application of 5-HT (30 µM). (J) Summary of mean membrane potential measured predrug, during 5-HT application, and following wash ( P < .001; n = 4 animals).

    Journal: Endocrinology

    Article Title: Robust serotonin activation of the kisspeptin GnRH pulse generator in male and female mice

    doi: 10.1210/endocr/bqag034

    Figure Lengend Snippet: Effects of serotonin and 5-HT receptor compounds on ARN KISS neuron firing in acute brain slices from diestrous female mice. (A) Robust excitatory effect of 90 seconds puff of 40 µM serotonin on firing rate of a middle ARN kisspeptin neuron. (B) Inhibitory effect of 90 seconds puff of 60 µM serotonin on firing rate of a caudal ARN kisspeptin neuron initially stimulated to fire by a 200 nM puff of NKB. (C) Rostral ARN kisspeptin neuron not responding to 60 µM puffs of serotonin but later activated by NKB. (D) Summary of percentage of rostral (rARN), middle (mARN), and caudal (cARN) kisspeptin neurons excited or inhibited by serotonin. (E) Caudal ARN kisspeptin neuron activated by serotonin (40 µM) in the absence and presence of methiothepin (100 µM). (F) Middle ARN kisspeptin neuron in which the excitatory effect of serotonin (40 µM) is blocked by methiothepin (100 µM). (G) Middle ARN kisspeptin neuron activated by serotonin (40 µM) in the absence and presence of SB228357 (100 µM). (H) Caudal ARN kisspeptin neuron in which zacopride (2 µM) facilitates serotonin excitation. (I) Whole-cell recording from an ARN KISS neuron in the continuous presence of TTX, CNQX, DAP5, and bicuculline, showing depolarization during bath application of 5-HT (30 µM). (J) Summary of mean membrane potential measured predrug, during 5-HT application, and following wash ( P < .001; n = 4 animals).

    Article Snippet: Stock solutions of GABAzine (SR95531, 5 mM, Tocris, UK), CNQX (10 mM, Tocris, UK), and DAP5, (50 mM, Tocris, UK) were prepared with Milli-Q water or NaOH for DAP5.

    Techniques: Membrane