Biomaterial Database

Actions of prednisolone acetate, pregnenolone-16alpha-carbonitrile, and triamcinolone upon drug resistance and metabolism: a comparative study. 1977

P Kourounakis, and H Selye

In female rats, pretreatment with prednisolone acetate diminished the duration of zoxazolamine-induced paralysis as well as its plasma concentrations and increased significantly the in vitro metabolism of zoxazolamine and ethylmorphine. These actions of prednisolone were compared with those of equimolar amounts of pregnenolone-16alpha-carbonitrile (PCN) (a known microsomal enzyme inducer) and of triamcinolone (an agent that reduces the sensitivity of the body to drugs although not via microsomal enzyme induction). Prednisolone proved to be a strong drug-metabolizing enzyme inducer but it was less potent than PCN.

UI	MeSH Term	Description	Entries
D008099	Liver	A large lobed glandular organ in the abdomen of vertebrates that is responsible for detoxification, metabolism, synthesis and storage of various substances.	Livers
D009022	Morphine Derivatives	Analogs or derivatives of morphine.	Morphines
D010243	Paralysis	A general term most often used to describe severe or complete loss of muscle strength due to motor system disease from the level of the cerebral cortex to the muscle fiber. This term may also occasionally refer to a loss of sensory function. (From Adams et al., Principles of Neurology, 6th ed, p45)	Palsy,Plegia,Todd Paralysis,Todd's Paralysis,Palsies,Paralyses,Paralysis, Todd,Paralysis, Todd's,Plegias,Todds Paralysis
D011239	Prednisolone	A glucocorticoid with the general properties of the corticosteroids. It is the drug of choice for all conditions in which routine systemic corticosteroid therapy is indicated, except adrenal deficiency states.	Di-Adreson-F,Predate,Predonine,Di Adreson F,DiAdresonF
D011285	Pregnenolone Carbonitrile	A catatoxic steroid and microsomal enzyme inducer having significant effects on the induction of cytochrome P450. It has also demonstrated the potential for protective capability against acetaminophen-induced liver damage.	PCN,Pregnenolone 16 alpha-Carbonitrile,Pregnenolone Carbonitrile, (3 beta)-Isomer,Pregnenolone Carbonitrile, (3 beta,16 beta)-Isomer,16 alpha-Carbonitrile, Pregnenolone,Carbonitrile, Pregnenolone,Pregnenolone 16 alpha Carbonitrile
D011506	Proteins	Linear POLYPEPTIDES that are synthesized on RIBOSOMES and may be further modified, crosslinked, cleaved, or assembled into complex proteins with several subunits. The specific sequence of AMINO ACIDS determines the shape the polypeptide will take, during PROTEIN FOLDING, and the function of the protein.	Gene Products, Protein,Gene Proteins,Protein,Protein Gene Products,Proteins, Gene
D003640	Dealkylation	The removing of alkyl groups from a compound. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed)	Dealkylations
D004351	Drug Resistance	Diminished or failed response of an organism, disease or tissue to the intended effectiveness of a chemical or drug. It should be differentiated from DRUG TOLERANCE which is the progressive diminution of the susceptibility of a human or animal to the effects of a drug, as a result of continued administration.	Resistance, Drug
D004364	Pharmaceutical Preparations	Drugs intended for human or veterinary use, presented in their finished dosage form. Included here are materials used in the preparation and/or formulation of the finished dosage form.	Drug,Drugs,Pharmaceutical,Pharmaceutical Preparation,Pharmaceutical Product,Pharmaceutic Preparations,Pharmaceutical Products,Pharmaceuticals,Preparations, Pharmaceutical,Preparation, Pharmaceutical,Preparations, Pharmaceutic,Product, Pharmaceutical,Products, Pharmaceutical
D005260	Female		Females