Identification
Name Dihydroquinidine barbiturate
Accession Number DB01341
Type small molecule
Description Not Available
Structure
Categories (*)
Molecular Weight Not Available
Groups experimental
Monoisotopic Weight Not Available
Pharmacology
Indication Not Available
Mechanism of action Barbiturates work by binding to the GABAA receptor at either the alpha or the beta sub unit. These are binding sites that are distinct from GABA itself and also distinct from the benzodiazepine binding site. Like benzodiazepines, barbiturates potentiate the effect of GABA at this receptor. This GABAA receptor binding decreases input resistance, depresses burst and tonic firing, especially in ventrobasal and intralaminar neurons, while at the same time increasing burst duration and mean conductance at individual chloride channels; this increases both the amplitude and decay time of inhibitory postsynaptic currents. In addition to this GABA-ergic effect, barbiturates also block the AMPA receptor, a subtype of glutamate receptor. Glutamate is the principal excitatory neurotransmitter in the mammalian CNS.
Absorption Not Available
Protein binding Not Available
Biotransformation Not Available
Route of elimination Not Available
Toxicity Not Available
Affected organisms Not Available
Interactions
Drug Interactions
Drug Mechanism of interaction
Amiloride Decreases the antiarrhythmic effect of quinidine
Aminophylline The barbiturate, dihydroquinidine barbiturate, decreases the effect of aminophylline.
Amiodarone Increases the effect of quinidine
Amitriptyline Dihydroquinidine barbiturate increases the effect of the tricyclic antidepressant, amitriptyline.
Aripiprazole Quinidine increases the effect and toxicity of aripiprazole
Atazanavir Increased risk of cardiotoxicity and arrhythmias
Betamethasone The barbiturate, dihydroquinidine barbiturate, may decrease the effect of the corticosteroid, betamethasone.
Cimetidine Increases the effect of quinidine
Cisapride Increased risk of cardiotoxicity and arrhythmias
Clomipramine Dihydroquinidine barbiturate increases the effect of the tricyclic antidepressant, clomipramine.
Codeine Quinidine decreases the analgesic effect of codeine
Cyclosporine The barbiturate, dihydroquinidine barbiturate, increases the effect of cyclosporine.
Desipramine Dihydroquinidine barbiturate increases the effect of the tricyclic antidepressant, desipramine.
Dexamethasone The barbiturate, dihydroquinidine barbiturate, may decrease the effect of the corticosteroid, dexamethasone.
Dextromethorphan Quinidine increases the toxicity of dextromethorphan
Digoxin Quinine/quinidine increases the effect of digoxin
Diltiazem Increases the effect and toxicity of quinidine
Doxepin Dihydroquinidine barbiturate increases the effect of the tricyclic antidepressant, doxepin.
Doxycycline The anticonvulsant, dihydroquinidine barbiturate, decreases the effect of doxycycline.
Felodipine The barbiturate, dihydroquinidine barbiturate, decreases the effect of felodipine.
Fludrocortisone The barbiturate, dihydroquinidine barbiturate, may decrease the effect of the corticosteroid, fludrocortisone.
Folic Acid Folic acid decreases the effect of anticonvulsant, dihydroquinidine barbiturate.
Gatifloxacin Increased risk of cardiotoxicity and arrhythmias
Gefitinib The CYP3A4 inducer, dihydroquinidine barbiturate, may decrease the serum concentration and therapeutic effects of gefitinib.
Grepafloxacin Increased risk of cardiotoxicity and arrhythmias
Griseofulvin The barbiturate, dihydroquinidine barbiturate, decreases the effect of griseofulvin.
Hydrocortisone The barbiturate, dihydroquinidine barbiturate, may decrease the effect of the corticosteroid, hydrocortisone.
Imipramine Dihydroquinidine barbiturate increases the effect of the tricyclic antidepressant, imipramine.
Levofloxacin Increased risk of cardiotoxicity and arrhythmias
Levonorgestrel Phenobarbital decreases the effect of levonorgestrel
Magnesium The antiacid decreases the absorption of quinidine
Methadone The barbiturate, dihydroquinidine barbiturate, decreases the effect of methadone.
Metronidazole The barbiturate, dihydroquinidine barbiturate, decreases the effect of metronidazole.
Moxifloxacin Increased risk of cardiotoxicity and arrhythmias
Nelfinavir Nelfinavir increases the effect and toxicity of quindine
Nifedipine Decreased quinidine effect, increased nifedipine effect
Nortriptyline Dihydroquinidine barbiturate increases the effect of the tricyclic antidepressant, nortriptyline.
Ofloxacin Increased risk of cardiotoxicity and arrhythmias
Oxtriphylline The barbiturate, dihydroquinidine barbiturate, decreases the effect of oxtriphylline.
Prednisolone The barbiturate, dihydroquinidine barbiturate, may decrease the effect of the corticosteroid, prednisolone.
Prednisone The barbiturate, dihydroquinidine barbiturate, may decrease the effect of the corticosteroid, prednisone.
Procainamide Quinidine increases the effect of procainamide
Propafenone Quinidine increases the effect of propafenone
Quinidine The anticonvulsant, dihydroquinidine. barbiturate, decreases the effect of quinidine.
Quinupristin This combination presents an increased risk of toxicity
Theophylline The barbiturate, dihydroquinidine barbiturate, decreases the effect of theophylline.
Triamcinolone The barbiturate, dihydroquinidine barbiturate, may decrease the effect of the corticosteroid, triamcinolone.
Food Interactions Not Available
Gamma-aminobutyric-acid receptor subunit alpha-1
Name Gamma-aminobutyric-acid receptor subunit alpha-1
Gene Name GABRA1
Pharmacological action yes
Actions potentiator
References
  • Overington JP, Al-Lazikani B, Hopkins AL: How many drug targets are there? Nat Rev Drug Discov. 2006 Dec;5(12):993-6. - Pubmed
  • Imming P, Sinning C, Meyer A: Drugs, their targets and the nature and number of drug targets. Nat Rev Drug Discov. 2006 Oct;5(10):821-34. - Pubmed
DTHybrid score 0.1943
Id Partner name Gene Name Score
523 Gamma-aminobutyric-acid receptor subunit alpha-5 GABRA5 0.0694
423 Gamma-aminobutyric-acid receptor subunit alpha-2 GABRA2 0.0689
580 Gamma-aminobutyric-acid receptor subunit alpha-3 GABRA3 0.0644
530 Gamma-aminobutyric-acid receptor subunit alpha-4 GABRA4 0.0481
841 Gamma-aminobutyric-acid receptor subunit alpha-6 GABRA6 0.0477
6086 Gamma-aminobutyric acid receptor subunit gamma-2 GABRG2 0.0344
4095 Neuronal acetylcholine receptor subunit alpha-7 CHRNA7 0.0323
947 Neuronal acetylcholine receptor subunit alpha-4 CHRNA4 0.0323
918 Glutamate receptor, ionotropic kainate 2 GRIK2 0.0316
921 Glutamate receptor 2 GRIA2 0.031
4100 Gamma-aminobutyric-acid receptor subunit beta-2 GABRB2 0.0275
4098 Gamma-aminobutyric-acid receptor subunit beta-1 GABRB1 0.0272
142 Gamma-aminobutyric-acid receptor subunit rho-1 GABRR1 0.0269
6087 Gamma-aminobutyric acid receptor subunit gamma-1 GABRG1 0.026
6093 Gamma-aminobutyric acid receptor subunit delta GABRD 0.0259
6089 Gamma-aminobutyric acid receptor subunit epsilon GABRE 0.0258
4099 Gamma-aminobutyric-acid receptor subunit beta-3 GABRB3 0.0246
6088 Gamma-aminobutyric acid receptor subunit gamma-3 GABRG3 0.0237
6090 Gamma-aminobutyric acid receptor subunit pi GABRP 0.0237
6092 Gamma-aminobutyric acid receptor subunit rho-2 GABRR2 0.0236
6115 Gamma-aminobutyric acid receptor subunit rho-3 GABRR3 0.0236
4512 Cytochrome P450 3A4 CYP3A4 0.0229
811 Translocator protein TSPO 0.019
482 Glycine receptor subunit alpha-1 GLRA1 0.0172
4757 Cytochrome P450 2C9 CYP2C9 0.0163
6013 Cytochrome P450 2E1 CYP2E1 0.0157
240 Gamma-aminobutyric acid type B receptor, subunit 1 GABBR1 0.0151
6091 Gamma-aminobutyric acid receptor subunit theta GABRQ 0.0144
4119 Cytochrome P450 2D6 CYP2D6 0.0142
241 Calcium-transporting ATPase type 2C member 1 ATP2C1 0.0138
6016 Cytochrome P450 2C19 CYP2C19 0.0138
537 ATP synthase delta chain, mitochondrial ATP5D 0.0132
705 Glutamate receptor 1 GRIA1 0.0127
559 NADH-ubiquinone oxidoreductase chain 1 MT-ND1 0.0124
858 Potassium voltage-gated channel subfamily A member 1 KCNA1 0.0116
6030 Cytochrome P450 2B6 CYP2B6 0.0106
587 Serum albumin ALB 0.0089
3426 Glutamine synthetase glnA 0.0084
3987 Glutamine synthetase GLUL 0.0084
6017 Cholesterol side-chain cleavage enzyme, mitochondrial CYP11A1 0.0072
6107 Cytochrome P450 3A7 CYP3A7 0.007
4209 ATP-sensitive inward rectifier potassium channel 8 KCNJ8 0.0069
4200 Cytochrome P450 1A2 CYP1A2 0.0069
4924 Cytochrome P450 2C8 CYP2C8 0.0066
4118 Cytochrome P450 3A5 CYP3A5 0.0066
781 ATP-sensitive inward rectifier potassium channel 11 KCNJ11 0.0065
820 Glycine receptor subunit alpha-2 GLRA2 0.0063
172 Potassium channel subfamily K member 1 KCNK1 0.0061
20 Prostaglandin G/H synthase 1 PTGS1 0.006
5718 Cytochrome P450 2A6 CYP2A6 0.0058
1588 Multidrug resistance protein 1 ABCB1 0.0054
1680 Solute carrier family 2, facilitated glucose transporter member 1 SLC2A1 0.0049
158 Sodium channel protein type 1 subunit alpha SCN1A 0.0047
23 D(1A) dopamine receptor DRD1 0.0046
461 Glycine receptor subunit alpha-3 GLRA3 0.0045
382 Glutamate receptor, ionotropic kainate 1 GRIK1 0.0045
318 Alpha-2A adrenergic receptor ADRA2A 0.0045
540 Sodium-dependent noradrenaline transporter SLC6A2 0.0042
6023 Cytochrome P450 11B2, mitochondrial CYP11B2 0.0042
556 Alpha-1A adrenergic receptor ADRA1A 0.0042
6024 Cytochrome P450 1A1 CYP1A1 0.0041
220 Sodium channel protein type 5 subunit alpha SCN5A 0.0039
805 Cytochrome P450 11B1, mitochondrial CYP11B1 0.0037
6020 Aldehyde oxidase AOX1 0.0037
610 Calcium-activated potassium channel subunit alpha 1 KCNMA1 0.0034
2981 Phospholipase A2, membrane associated PLA2G2A 0.0033
629 Alpha-2B adrenergic receptor ADRA2B 0.0031
6106 Cytochrome P450 2C18 CYP2C18 0.0031
3811 Cytochrome P450 19A1 CYP19A1 0.003
592 Carbonic anhydrase 4 CA4 0.003
502 5-hydroxytryptamine 2A receptor HTR2A 0.0027
468 Cytochrome P450 4A11 CYP4A11 0.0024
706 Glutamate [NMDA] receptor subunit 3A GRIN3A 0.0023
357 Carbonic anhydrase 2 CA2 0.0021
3937 Fatty-acid amide hydrolase FAAH 0.002
251 Alcohol dehydrogenase 1A ADH1A 0.0019
465 Calmodulin CALM1 0.0018
1181 Alpha-1-acid glycoprotein 1 ORM1 0.0018
824 Sodium-dependent serotonin transporter SLC6A4 0.0018
444 Alcohol dehydrogenase 1B ADH1B 0.0016
831 D(2) dopamine receptor DRD2 0.0016
103 Muscarinic acetylcholine receptor M1 CHRM1 0.0016
1768 Guanine nucleotide-binding protein G(I)/G(S)/G(O) gamma-2 subunit GNG2 0.0015
1581 G protein-activated inward rectifier potassium channel 2 KCNJ6 0.0015
1268 Neuropeptide S receptor NPSR1 0.0015
1571 G protein-activated inward rectifier potassium channel 1 KCNJ3 0.0015
517 Alcohol dehydrogenase 1C ADH1C 0.0014
6073 Potassium channel subfamily K member 9 KCNK9 0.0014
6072 Potassium channel subfamily K member 3 KCNK3 0.0014
276 Sodium- and chloride-dependent GABA transporter 1 SLC6A1 0.0012
462 Intermediate conductance calcium-activated potassium channel protein 4 KCNN4 0.0012
6102 Arylamine N-acetyltransferase 2 NAT2 0.0012
591 Glutamate [NMDA] receptor subunit 3B GRIN3B 0.0011
837 Glutamate [NMDA] receptor subunit epsilon-1 GRIN2A 0.001
2207 Rhodopsin RHO 0.001
6031 Cytochrome P450 3A43 CYP3A43 0.001
6025 UDP-glucuronosyltransferase 1-4 UGT1A4 0.0009
6018 UDP-glucuronosyltransferase 1-9 UGT1A9 0.0008
6178 UDP-glucuronosyltransferase 2B7 UGT2B7 0.0008
6152 Solute carrier organic anion transporter family member 2A1 SLCO2A1 0.0007
6144 Solute carrier family 22 member 2 SLC22A2 0.0007
1709 Canalicular multispecific organic anion transporter 2 ABCC3 0.0006
1898 Cytochrome P450 1B1 CYP1B1 0.0006
776 Bile salt export pump ABCB11 0.0006
6145 Solute carrier family 22 member 1 SLC22A1 0.0006
862 Multidrug resistance-associated protein 1 ABCC1 0.0006
1735 Canalicular multispecific organic anion transporter 1 ABCC2 0.0005