[Development of molecular biomarkers for the detection of nonbiocompatible substances in the environment]. / Développement de biomarqueurs moléculaires pour la détection de substances nonbiocompatibles dans l'environnement.
C R Seances Soc Biol Fil
; 188(4): 313-20, 1994.
Article
en Fr
| MEDLINE
| ID: mdl-7736255
Many difficult issues confront toxicologists. For instance, animal studies have proved to be difficult for the assessment of human toxicity especially to measure directly the impact of low doses of toxic compounds. Recently, novel molecular approaches to cellular mechanisms involved in the response of "toxic stress" has broaden the field of toxicology. Indeed, the development of biological markers capable of detecting exposure to toxicants before a full-blown toxic response is an important current focus of environmental research. Cells from various organisms respond rapidly to toxic stress by altering their metabolic rates, cell growth or gene transcription controlling basic functions. Examples included are oxidative stress conveyed by peroxisomes, stress proteins implicated in protein folding and in detoxification and/or resistance. A number of potential practical applications of the stress response and stress proteins can be envisioned. Stress gene expression may be considered as a potential "biomonitor" to assess whether cells or organisms are experiencing metabolic stress within their environment. Such biological indicators should provide an early, sensitive, readily and measurable response for monitoring the actions of pollutants. In addition, the development of molecular and cellular probes may lead to new classification schemes for toxic compounds based upon various cellular and molecular responses rather than on toxicant structure.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Biomarcadores
/
Contaminantes Ambientales
Tipo de estudio:
Diagnostic_studies
País/Región como asunto:
Europa
Idioma:
Fr
Revista:
C R Seances Soc Biol Fil
Año:
1994
Tipo del documento:
Article
Pais de publicación:
Francia