Inactivation of digoxin by Eubacterium lentum, an anaerobe of the human gut flora. 1982

J F Dobkin, and J R Saha, and V P Butler, and H C Neu, and J Lindenbaum

Digoxin is converted to cardioinactive reduced metabolites (DRP) in vivo and in vitro by the human gut flora. Digoxin inactivation is mediated by Eubacterium lentum, a normal inhabitant of the gastrointestinal flora. E. lentum appears to be the sole organism performing this reaction. Fecal bacteria that convert digoxin to DRP in vitro have been found to be present in some subjects who fail to make DRP in vivo. DRP-forming E. lentum have been isolated from the stools of two such subjects. When increasing amounts of arginine are supplied as a growth substrate to E. lentum, bacterial growth and DRP production vary inversely. Further study will be required to identify the factors which determine why digoxin is inactivated in vivo by the gut flora of certain patients and not by others.

UI MeSH Term Description Entries
D007422 Intestines The section of the alimentary canal from the STOMACH to the ANAL CANAL. It includes the LARGE INTESTINE and SMALL INTESTINE. Intestine
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D004074 Digitoxin A cardiac glycoside sometimes used in place of DIGOXIN. It has a longer half-life than digoxin; toxic effects, which are similar to those of digoxin, are longer lasting. (From Martindale, The Extra Pharmacopoeia, 30th ed, p665) Coramedan,Digimed,Digimerck,Digitaline Nativelle,Digitoxin AWD,Digitoxin Bürger,Digitoxin Didier,Digitoxin-Philo,Digophton,AWD, Digitoxin,Bürger, Digitoxin,Didier, Digitoxin,Digitoxin Philo,Nativelle, Digitaline
D004076 Digoxigenin 3 beta,12 beta,14-Trihydroxy-5 beta-card-20(22)-enolide. A cardenolide which is the aglycon of digoxin. Can be obtained by hydrolysis of digoxin or from Digitalis orientalis L. and Digitalis lanata Ehrh. Lanadigenin
D004077 Digoxin A cardiotonic glycoside obtained mainly from Digitalis lanata; it consists of three sugars and the aglycone DIGOXIGENIN. Digoxin has positive inotropic and negative chronotropic activity. It is used to control ventricular rate in ATRIAL FIBRILLATION and in the management of congestive heart failure with atrial fibrillation. Its use in congestive heart failure and sinus rhythm is less certain. The margin between toxic and therapeutic doses is small. (From Martindale, The Extra Pharmacopoeia, 30th ed, p666) Digacin,Digitek,Digoregen,Digoxina Boehringer,Digoxine Nativelle,Dilanacin,Hemigoxine Nativelle,Lanacordin,Lanicor,Lanoxicaps,Lanoxin,Lanoxin-PG,Lenoxin,Mapluxin,Boehringer, Digoxina,Lanoxin PG,Nativelle, Digoxine,Nativelle, Hemigoxine
D005051 Eubacterium A genus of gram-positive, rod-shaped bacteria found in cavities of man and animals, animal and plant products, infections of soft tissue, and soil. Some species may be pathogenic. No endospores are produced. The genus Eubacterium should not be confused with EUBACTERIA, one of the three domains of life. Butyribacterium
D005243 Feces Excrement from the INTESTINES, containing unabsorbed solids, waste products, secretions, and BACTERIA of the DIGESTIVE SYSTEM.
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man

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