Phenformin
A biguanide hypoglycemic agent with actions and uses similar to those of metformin. Although it is generally considered to be associated with an unacceptably high incidence of lactic acidosis, often fatal, it is still available in some countries. (From Martindale, The Extra Pharmacopoeia, 30th ed, p290)
Structure for HMDB15050 (Phenformin)
C10H15N5
205.2596
205.132745505
1-carbamimidamido-N-(2-phenylethyl)methanimidamide
phenethylbiguanide
114-86-3
ICFJFFQQTFMIBG-UHFFFAOYSA-N
This compound belongs to the class of chemical entities known as biguanides. These are organic compounds containing two N-linked guanidines.
Chemical entities
Organic compounds
Organic nitrogen compounds
Organonitrogen compounds
Biguanides
Aromatic homomonocyclic compounds
Expected but not Quantified
Solid
Predicted LC-MS/MS Spectrum – 10V, PositiveNot Available
Predicted LC-MS/MS Spectrum – 20V, PositiveNot Available
Predicted LC-MS/MS Spectrum – 40V, PositiveNot Available
Predicted LC-MS/MS Spectrum – 10V, NegativeNot Available
Predicted LC-MS/MS Spectrum – 20V, NegativeNot Available
Predicted LC-MS/MS Spectrum – 40V, NegativeNot Available
Not Available
Not Available
Not Available
None
None
DB00914
Not Available
Not Available
Not Available
Not Available
Not Available
7953
C07673
Not Available
Not Available
Phenformin
HMDB15050
HMDB15050
Not Available
8249
Not Available
382509
- Rosand J, Friedberg JW, Yang JM: Fatal phenformin-associated lactic acidosis. Ann Intern Med. 1997 Jul 15;127(2):170. [PubMed:9230023 ]
- Enia G, Garozzo M, Zoccali C: Lactic acidosis induced by phenformin is still a public health problem in Italy. BMJ. 1997 Nov 29;315(7120):1466-7. [PubMed:9418116 ]
Enzymes
- General function:
- Involved in monooxygenase activity
- Specific function:
- Responsible for the metabolism of many drugs and environmental chemicals that it oxidizes. It is involved in the metabolism of drugs such as antiarrhythmics, adrenoceptor antagonists, and tricyclic antidepressants.
- Gene Name:
- CYP2D6
- Uniprot ID:
- P10635
- Molecular weight:
- 55768.94
References
- Preissner S, Kroll K, Dunkel M, Senger C, Goldsobel G, Kuzman D, Guenther S, Winnenburg R, Schroeder M, Preissner R: SuperCYP: a comprehensive database on Cytochrome P450 enzymes including a tool for analysis of CYP-drug interactions. Nucleic Acids Res. 2010 Jan;38(Database issue):D237-43. doi: 10.1093/nar/gkp970. Epub 2009 Nov 24. [PubMed:19934256 ]
- General function:
- Involved in protein kinase activity
- Specific function:
- Responsible for the regulation of fatty acid synthesis by phosphorylation of acetyl-CoA carboxylase. It also regulates cholesterol synthesis via phosphorylation and inactivation of hormone-sensitive lipase and hydroxymethylglutaryl-CoA reductase. Appears to act as a metabolic stress-sensing protein kinase switching off biosynthetic pathways when cellular ATP levels are depleted and when 5-AMP rises in response to fuel limitation and/or hypoxia. This is a catalytic subunit
- Gene Name:
- PRKAA1
- Uniprot ID:
- Q13131
- Molecular weight:
- 64008.6
References
- Woollhead AM, Sivagnanasundaram J, Kalsi KK, Pucovsky V, Pellatt LJ, Scott JW, Mustard KJ, Hardie DG, Baines DL: Pharmacological activators of AMP-activated protein kinase have different effects on Na+ transport processes across human lung epithelial cells. Br J Pharmacol. 2007 Aug;151(8):1204-15. Epub 2007 Jul 2. [PubMed:17603555 ]
- Chen S, Murphy J, Toth R, Campbell DG, Morrice NA, Mackintosh C: Complementary regulation of TBC1D1 and AS160 by growth factors, insulin and AMPK activators. Biochem J. 2008 Jan 15;409(2):449-59. [PubMed:17995453 ]
- Zhang L, He H, Balschi JA: Metformin and phenformin activate AMP-activated protein kinase in the heart by increasing cytosolic AMP concentration. Am J Physiol Heart Circ Physiol. 2007 Jul;293(1):H457-66. Epub 2007 Mar 16. [PubMed:17369473 ]
- General function:
- Involved in inward rectifier potassium channel activity
- Specific function:
- This potassium channel is controlled by G proteins. Inward rectifier potassium channels are characterized by a greater tendency to allow potassium to flow into the cell rather than out of it. Their voltage dependence is regulated by the concentration of extracellular potassium; as external potassium is raised, the voltage range of the channel opening shifts to more positive voltages. The inward rectification is mainly due to the blockage of outward current by internal magnesium. Can be blocked by external barium
- Gene Name:
- KCNJ8
- Uniprot ID:
- Q15842
- Molecular weight:
- 47967.5
References
- Aziz Q, Thomas A, Khambra T, Tinker A: Phenformin has a direct inhibitory effect on the ATP-sensitive potassium channel. Eur J Pharmacol. 2010 May 25;634(1-3):26-32. doi: 10.1016/j.ejphar.2010.02.023. Epub 2010 Feb 25. [PubMed:20188727 ]
Transporters
- General function:
- Involved in ion transmembrane transporter activity
- Specific function:
- Translocates a broad array of organic cations with various structures and molecular weights including the model compounds 1-methyl-4-phenylpyridinium (MPP), tetraethylammonium (TEA), N-1-methylnicotinamide (NMN), 4-(4-(dimethylamino)styryl)- N-methylpyridinium (ASP), the endogenous compounds choline, guanidine, histamine, epinephrine, adrenaline, noradrenaline and dopamine, and the drugs quinine, and metformin. The transport of organic cations is inhibited by a broad array of compounds like tetramethylammonium (TMA), cocaine, lidocaine, NMDA receptor antagonists, atropine, prazosin, cimetidine, TEA and NMN, guanidine, cimetidine, choline, procainamide, quinine, tetrabutylammonium, and tetrapentylammonium. Translocates organic cations in an electrogenic and pH-independent manner. Translocates organic cations across the plasma membrane in both directions. Transports the polyamines spermine and spermidine. Transports pramipexole across the basolateral membrane of the proximal tubular epithelial cells. The choline transport is activated by MMTS. Regulated by various intracellular signaling pathways including inhibition by protein kinase A activation, and endogenously activation by the calmodulin complex, the calmodulin- dependent kinase II and LCK tyrosine kinase
- Gene Name:
- SLC22A1
- Uniprot ID:
- O15245
- Molecular weight:
- 61187.4
References
- Dresser MJ, Xiao G, Leabman MK, Gray AT, Giacomini KM: Interactions of n-tetraalkylammonium compounds and biguanides with a human renal organic cation transporter (hOCT2). Pharm Res. 2002 Aug;19(8):1244-7. [PubMed:12240953 ]
- Wang DS, Jonker JW, Kato Y, Kusuhara H, Schinkel AH, Sugiyama Y: Involvement of organic cation transporter 1 in hepatic and intestinal distribution of metformin. J Pharmacol Exp Ther. 2002 Aug;302(2):510-5. [PubMed:12130709 ]
- General function:
- Involved in ion transmembrane transporter activity
- Specific function:
- Mediates tubular uptake of organic compounds from circulation. Mediates the influx of agmatine, dopamine, noradrenaline (norepinephrine), serotonin, choline, famotidine, ranitidine, histamin, creatinine, amantadine, memantine, acriflavine, 4-[4-(dimethylamino)-styryl]-N-methylpyridinium ASP, amiloride, metformin, N-1-methylnicotinamide (NMN), tetraethylammonium (TEA), 1-methyl-4-phenylpyridinium (MPP), cimetidine, cisplatin and oxaliplatin. Cisplatin may develop a nephrotoxic action. Transport of creatinine is inhibited by fluoroquinolones such as DX-619 and LVFX. This transporter is a major determinant of the anticancer activity of oxaliplatin and may contribute to antitumor specificity
- Gene Name:
- SLC22A2
- Uniprot ID:
- O15244
- Molecular weight:
- 62564.0
References
- Dresser MJ, Xiao G, Leabman MK, Gray AT, Giacomini KM: Interactions of n-tetraalkylammonium compounds and biguanides with a human renal organic cation transporter (hOCT2). Pharm Res. 2002 Aug;19(8):1244-7. [PubMed:12240953 ]