Nouvelles drogues de synthèse en addictovigilance (2015)

FRANÇAIS :
Depuis 2005, 215 nouvelles drogues ont été signalées dans l'Union européenne. Ces produits de synthèse, créés pour esquiver la législation sur les stupéfiants, sont des dérivés de médicaments ou drogues existants. Leur disponibilité est sans limite. Les effets recherchés incluent des effets stimulants, entactogènes, hallucinogènes, psychédéliques ou dissociatifs. Plusieurs classes chimiques sont représentées : phénéthylamines, tryptamines, pipérazines, cathinones, cannabinoïdes,... La toxicité inclut des effets comportementaux et physiques, les conséquences cardiovasculaires étant les plus redoutables. Cependant, de faibles variations de structure chimique peuvent entraîner des effets quantitativement différents, majorant ainsi la toxicité ou la dépendance. Ces substances ont une existence réelle sur le territoire national comme le montrent les données de l'Observatoire Français des Drogues et des Toxicomanies ainsi que celles du réseau des Centres d'Addictovigilance. La législation concernant ces produits change régulièrement avec de plus en plus de pays les classant comme «stupéfiants» pour en limiter l'usage.
ENGLISH:
New substances, also known as "designer drugs" or "legal highs" are increasingly available to drug users. Two hundred and fifteen hitherto unlisted substances have been notified by European Union member states since 2005. These synthetic drugs, which have been developed to side-step the legislation on drugs, are analogues or derivatives of existing drugs and medications. The availability of these "legal highs", sold on Internet under various denominations such as bath salt, plant fertilizer, chemical not intended for human use, or spice, is unlimited. The effects felt by users vary, and the substances may be stimulant, entactogenic, hallucinogenic, psychedelic or dissociative. The pharmacological targets also vary, and may be either the increase of extracellular levels of neurotransmitters via different mechanisms (reuptake inhibition, stimulation of intracellular release) or else fixation on specific receptors. Several chemical classes, themselves divided into sub-classes, are involved: phenethylamines, tryptamines, piperazines, cathinones, cannabinoids etc. The toxicity of the main members of these categories is increasingly well known, the most deleterious being behavioural effects, physical manifestations, and cardiovascular consequences. However, small variations in their chemical structure can generate effects that are quantitatively different, thus enhancing their toxicity or addictive potential, and much remains to be achieved in terms of knowledge about these new drugs. These substances are indeed present on the French territory, as shown by data provided by the Observatoire Français des Drogues et Toxicomanies, and notifications by the French Addictovigilance network. Screening in clinical toxicology laboratories is not widespread, since these molecules are not detected by the standard screening tests, so that there is probably an under-estimation of the use of these new drugs. The legislation on these substances changes regularly, with more and more countries classifying them as "narcotics" or illegal psychotropic drugs so as to restrict their use, applying a generic classification when possible.