DT-Web

DB01297 - Practolol


Identification
Name Practolol
Accession Number DB01297
Type small molecule
Description A beta-adrenergic antagonist that has been used in the emergency treatment of cardiac arrhythmias. [PubChem]
Structure
MOL SDF PDB SMILES InChI
Categories (*)
Molecular Weight 266.3361
Groups approved
Monoisotopic Weight 266.16304258
Pharmacology
Indication Used in the emergency treatment of cardiac arrhythmias.
Mechanism of action Like other beta-adrenergic antagonists, practolol competes with adrenergic neurotransmitters such as catecholamines for binding at sympathetic receptor sites. Like propranolol and timolol, practolol binds at beta(1)-adrenergic receptors in the heart and vascular smooth muscle, inhibiting the effects of the catecholamines epinephrine and norepinephrine and decreasing heart rate, cardiac output, and systolic and diastolic blood pressure.
Absorption Not Available
Protein binding Not Available
Biotransformation Not Available
Route of elimination Not Available
Toxicity Symptoms of overdose include abdominal irritation, central nervous system depression, coma, extremely slow heartbeat, heart failure, lethargy, low blood pressure, and wheezing.
Affected organisms Not Available
Interactions
Drug Interactions
Drug Mechanism of interaction
Acetohexamide The beta-blocker, practolol, may decrease symptoms of hypoglycemia.
Chlorpropamide The beta-blocker, practolol, may decrease symptoms of hypoglycemia.
Clonidine Increased hypertension when clonidine stopped
Dihydroergotamine Ischemia with risk of gangrene
Disopyramide The beta-blocker, practolol, may increase the toxicity of disopyramide.
Epinephrine Hypertension, then bradycardia
Ergotamine Ischemia with risk of gangrene
Fenoterol Antagonism
Formoterol Antagonism
Gliclazide The beta-blocker, practolol, may decrease symptoms of hypoglycemia.
Glyburide The beta-blocker, practolol, may decrease symptoms of hypoglycemia.
Ibuprofen Risk of inhibition of renal prostaglandins
Indomethacin Risk of inhibition of renal prostaglandins
Insulin Glargine The beta-blocker, practolol, may decrease symptoms of hypoglycemia.
Methysergide Ischemia with risk of gangrene
Orciprenaline Antagonism
Oxprenolol Antagonism
Pipobroman Antagonism
Piroxicam Risk of inhibition of renal prostaglandins
Prazosin Risk of hypotension at the beginning of therapy
Repaglinide The beta-blocker, practolol, may decrease symptoms of hypoglycemia.
Terbutaline Antagonism
Food Interactions
  • Avoid alcohol.
  • Avoid natural licorice.

Targets


Beta-1 adrenergic receptor
Name Beta-1 adrenergic receptor
Gene Name ADRB1
Pharmacological action yes
Actions antagonist
References
  • Abrahamsson T: The beta 1- and beta 2-adrenoceptor stimulatory effects of alprenolol, oxprenolol and pindolol: a study in the isolated right atrium and uterus of the rat. Br J Pharmacol. 1986 Apr;87(4):657-64. - Pubmed
  • Keyrilainen O, Uusitalo A: A comparative study of three beta 1-adrenoreceptor blocking drugs with different degree of intrinsic stimulating activity (metoprolol, practolol and H 87/07) in patients with angina pectoris. Ann Clin Res. 1978 Aug;10(4):185-90. - Pubmed
  • Saarnivaara L, Lindgren L, Hynynen M: Effects of practolol and metoprolol on QT interval, heart rate and arterial pressure during induction of anaesthesia. Acta Anaesthesiol Scand. 1984 Dec;28(6):644-8. - Pubmed
  • Chen X, Ji ZL, Chen YZ: TTD: Therapeutic Target Database. Nucleic Acids Res. 2002 Jan 1;30(1):412-5. - Pubmed
DTHybrid score 0.4658

Predictions


Id Partner name Gene Name Score
766 Beta-2 adrenergic receptor ADRB2 0.2313
1517 Beta-3 adrenergic receptor ADRB3 0.07
4119 Cytochrome P450 2D6 CYP2D6 0.0536
1588 Multidrug resistance protein 1 ABCB1 0.029
556 Alpha-1A adrenergic receptor ADRA1A 0.0283
320 5-hydroxytryptamine 1A receptor HTR1A 0.0264
4200 Cytochrome P450 1A2 CYP1A2 0.0179
318 Alpha-2A adrenergic receptor ADRA2A 0.0165
6144 Solute carrier family 22 member 2 SLC22A2 0.0157
101 Potassium voltage-gated channel subfamily H member 2 KCNH2 0.0153
4512 Cytochrome P450 3A4 CYP3A4 0.0152
885 5-hydroxytryptamine 1B receptor HTR1B 0.0147
4292 Acyl-[acyl-carrier-protein]--UDP-N-acetylglucosamine O-acyltransferase lpxA 0.0124
3076 Antigen 85-C fbpC 0.0122
632 Alpha-1B adrenergic receptor ADRA1B 0.012
3810 Catechol O-methyltransferase COMT 0.0109
629 Alpha-2B adrenergic receptor ADRA2B 0.0106
6024 Cytochrome P450 1A1 CYP1A1 0.0103
3941 Amine oxidase [flavin-containing] A MAOA 0.0102
540 Sodium-dependent noradrenaline transporter SLC6A2 0.0096
6016 Cytochrome P450 2C19 CYP2C19 0.0096
1181 Alpha-1-acid glycoprotein 1 ORM1 0.0093
6847 Lactase-phlorizin hydrolase LCT 0.0093
378 Alpha-2C adrenergic receptor ADRA2C 0.0088
1820 Beta-nerve growth factor NGF 0.0085
6145 Solute carrier family 22 member 1 SLC22A1 0.0085
4145 Phosphatidylinositol 3-kinase regulatory subunit beta PIK3R2 0.0077
4146 Phosphatidylinositol 3-kinase regulatory subunit gamma PIK3R3 0.0077
828 Phenylalanine-4-hydroxylase PAH 0.0077
3109 Phenylalanine-4-hydroxylase phhA 0.0077
789 Alpha-1D adrenergic receptor ADRA1D 0.0074
1281 Phosphatidylinositol 3-kinase regulatory subunit alpha PIK3R1 0.0065
824 Sodium-dependent serotonin transporter SLC6A4 0.0061
777 Tumor necrosis factor TNF 0.0058
713 Sodium-dependent dopamine transporter SLC6A3 0.0055
23 D(1A) dopamine receptor DRD1 0.0054
2300 Lysozyme E 0.0052
3633 Lysozyme R 0.0052
5597 Lysozyme 17 0.0052
1176 Mitogen-activated protein kinase 1 MAPK1 0.0043
118 Organic cation/carnitine transporter 2 SLC22A5 0.004
4757 Cytochrome P450 2C9 CYP2C9 0.0036
1374 Natriuretic peptides B NPPB 0.0032
1827 Gap junction alpha-1 protein GJA1 0.0032
1908 Vascular cell adhesion protein 1 VCAM1 0.0032
6164 POU domain, class 5, transcription factor 1 POU5F1 0.0031
131 Synaptic vesicular amine transporter SLC18A2 0.003
6107 Cytochrome P450 3A7 CYP3A7 0.0029
3876 Aromatic-L-amino-acid decarboxylase DDC 0.0028
4118 Cytochrome P450 3A5 CYP3A5 0.0027
4160 Voltage-dependent calcium channel subunit alpha-2/delta-2 CACNA2D2 0.0027
194 NADH dehydrogenase [ubiquinone] 1 subunit C2 NDUFC2 0.0026
6147 Solute carrier family 22 member 3 SLC22A3 0.0026
964 Voltage-dependent T-type calcium channel subunit alpha-1H CACNA1H 0.0025
3939 Amine oxidase [flavin-containing] B MAOB 0.0023
183 Vascular endothelial growth factor A VEGFA 0.0023
233 Potassium channel subfamily K member 2 KCNK2 0.0023
6151 Monocarboxylate transporter 10 SLC16A10 0.0021
4114 Voltage-dependent L-type calcium channel subunit beta-3 CACNB3 0.0019
4112 Voltage-dependent L-type calcium channel subunit beta-4 CACNB4 0.0019
1360 Sphingomyelin phosphodiesterase SMPD1 0.0019
6013 Cytochrome P450 2E1 CYP2E1 0.0019
502 5-hydroxytryptamine 2A receptor HTR2A 0.0019
492 Histamine H1 receptor HRH1 0.0018
4113 Voltage-dependent L-type calcium channel subunit alpha-1F CACNA1F 0.0018
333 Voltage-dependent L-type calcium channel subunit beta-1 CACNB1 0.0017
158 Sodium channel protein type 1 subunit alpha SCN1A 0.0017
3947 Xanthine dehydrogenase/oxidase XDH 0.0016
1256 5-hydroxytryptamine 6 receptor HTR6 0.0016
6025 UDP-glucuronosyltransferase 1-4 UGT1A4 0.0015
4110 Voltage-dependent L-type calcium channel subunit beta-2 CACNB2 0.0015
4115 Voltage-dependent L-type calcium channel subunit alpha-1D CACNA1D 0.0015
4111 Voltage-dependent L-type calcium channel subunit alpha-1S CACNA1S 0.0015
124 Histamine H2 receptor HRH2 0.0014
478 Voltage-dependent L-type calcium channel subunit alpha-1C CACNA1C 0.0014
716 5-hydroxytryptamine 7 receptor HTR7 0.0014
6432 Transporter snf 0.0014
4924 Cytochrome P450 2C8 CYP2C8 0.0014
436 5-hydroxytryptamine 2B receptor HTR2B 0.0013
432 D(4) dopamine receptor DRD4 0.0013
20 Prostaglandin G/H synthase 1 PTGS1 0.0012
638 D(3) dopamine receptor DRD3 0.0012
590 5-hydroxytryptamine 2C receptor HTR2C 0.0012
831 D(2) dopamine receptor DRD2 0.001
6106 Cytochrome P450 2C18 CYP2C18 0.001
274 Muscarinic acetylcholine receptor M5 CHRM5 0.001
833 Organic cation/carnitine transporter 1 SLC22A4 0.001
587 Serum albumin ALB 0.0009
450 Muscarinic acetylcholine receptor M4 CHRM4 0.0009
51 Muscarinic acetylcholine receptor M3 CHRM3 0.0008
617 Muscarinic acetylcholine receptor M2 CHRM2 0.0008
5718 Cytochrome P450 2A6 CYP2A6 0.0008
103 Muscarinic acetylcholine receptor M1 CHRM1 0.0008
6030 Cytochrome P450 2B6 CYP2B6 0.0007
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