title: [Toxicologic estimation, an element of therapeutical progress].
abstract: The clinical toxicology plays a great part to the progresses of human therapy. It is an essential observation for a good clinical use of drugs and of materials used by physicians. It permits a better knowledge of the dose-effect relationship (in acute either in chronic adverse effects). It specifies the statement of the therapeutic efficacy between the threshold, a placebo effect with adverse disorders as those possibly related to any xenobiotic and the overdose where the nocivity predominates on the therapeutic results. A better detection of some individual responses as adverse or toxic reactions due to a genetic peculiarity belongs to clinical toxicogenetic studies in parallel with pharmacogenetics. The recent evolution of drugs needs a more scientific approach of the therapy for cytotoxic drugs largely used against cancers, in terms of tolerable doses, cumulative actions, interactions and cofactors. On the opposite, the bio-chemical variations of new bio-drugs acting as real bioprotheses of hormones or biomediators need specific toxicological studies according to the progresses and to the limits of biotechnologies. Among numerous drugs issued of chemical research one must separate the reversible functional drugs designed as enzyme-inhibitors or cellular receptors ligands very close to the dominant themes of biochemistry and experimental physiology from chemicals coined by synthetic "chance" which are for the time being plain xenobiotics whose dangers are often poorly evaluated but whose practical applications will take place either in disciplines related to pharmacopea like chemicals used in plant protection, either beginning their commercial trip very far from health concern in industrial preparations and being brought back to medicine as plastics, glues or metallic implants.(ABSTRACT TRUNCATED AT 250 WORDS)
authors.affiliation: Hôpital Fernand-Widal, Paris.
authors.forename: P E
authors.initials: PE
authors.lastname: Fournier
mesh_terms: D000818:Animals; D004305:Dose-Response Relationship, Drug; D004358:Drug Therapy / Q000379:methods*; D006801:Humans; D010599:Pharmacokinetics; D014116:Toxicology / Q000145:classification / Q000379:methods*
vernacular_title: La toxicologie prévisionnelle, élément de progrès thérapeutique.