Search results for " cannabis"
showing 10 items of 37 documents
Childhood trauma and substance use underlying psychosis: a systematic review
2020
[EN] Background: Schizophrenia spectrum disorders (SSD) are mental diseases caused by a combination of genetic susceptibility and a number of environmental factors. Among these factors, the role of traumatic events suffered in childhood, as well as that of substance use, have been of particular research interest. Objectives: To conduct a systematic review to clarify whether there is an interaction between childhood trauma and substance use related to the diagnosis or symptoms of SSD. It was also the objective of this review to collate the associations that may exist between the three variables of the study (trauma, substance use and psychosis). Methods: We conducted a systematic search resu…
Association of extent of cannabis use and psychotic like intoxication experiences in a multi-national sample of first episode psychosis patients and …
2021
AbstractBackgroundFirst episode psychosis (FEP) patients who use cannabis experience more frequent psychotic and euphoric intoxication experiences compared to controls. It is not clear whether this is consequent to patients being more vulnerable to the effects of cannabis use or to their heavier pattern of use. We aimed to determine whether extent of use predicted psychotic-like and euphoric intoxication experiences in patients and controls and whether this differs between groups.MethodsWe analysed data on patients who had ever used cannabis (n = 655) and controls who had ever used cannabis (n = 654) across 15 sites from six countries in the EU-GEI study (2010–2015). We used multiple regres…
FIRST EPISODE PSYCHOSIS PATIENTS WHO USED CANNABIS DEVELOP THEIR ILLNESS AT A SIGNIFICANTLY YOUNGER AGE THAN THOSE WHO NEVER USED CONSISTENTLY ACROSS…
2018
Background: Patients presenting to psychiatric services with their first episode of psychosis (FEP) report higher rates of previous cannabis use than the general population (Donoghue et al., 2011; Myles, Myles and Large, 2016). Evidence suggested that patients suffering from psychosis with a history of cannabis use have an earlier age of onset of psychosis (AOP) than those who never used it (Di Forti et al., 2013). We aim to investigate if the reported association between use of cannabis and AOP is consistent across different countries, once having taken into account different patterns of cannabis use (i.e. frequency of use and age at first use). Methods: We analysed data on patterns of lif…
FIRST EPISODE PSYCHOSIS PATIENTS ACROSS EUROPE DIFFER IN INTELLECTUAL QUOTIENT (IQ) AND EXPOSURE TO ENVIRONMENTAL HAZARDS
2018
Background Children who later develop Schizophrenia on average are more likely to present with lower IQ; this has been considered evidence for the neurodevelopmental theory of schizophrenia. Though, recent studies have shown that first episode psychosis patients with a history of cannabis use have significantly higher premorbid and current IQ compared to those who never used it. This suggests that abnormal early neurodevelopment does not explain the aetiology of all cases of Schizophrenia, leaving space to environmental hazards. The present study aims to: investigate differences in IQ, as a marker of neurodevelopment, and in exposure to environmental risk factors in a large sample first epi…
Cannabis Use and Social Anxiety in Adolescence: The Role of Facilitation Expectancies
2015
Cannabis use is frequently related to social anxiety in young adulthood, but the nature of this relationship is unclear. Moreover, much research has been conducted on the role of cannabis effects expectancies and their relationship to social anxiety among young adults, but less is known about adolescence. The study examined the relationship between social anxiety, cannabis use patterns, and cannabis effects expectancies among a nonclinical sample of 1,305 adolescents (51% female). Non-users reported higher social anxiety scores than non-problematic and risky users. Compared to users, non-users had more negative expectancies. Risky and problematic users showed higher social and sexual facili…
Comparing illicit drug use in 19 European cities through sewage analysis
2012
Abstract: The analysis of sewage for urinary biomarkers of illicit drugs is a promising and complementary approach for estimating the use of these substances in the general population. For the first time, this approach was simultaneously applied in 19 European cities, making it possible to directly compare illicit drug loads in Europe over a 1-week period. An inter-laboratory comparison study was performed to evaluate the analytical performance of the participating laboratories. Raw 24-hour composite sewage samples were collected from 19 European cities during a single week in March 2011 and analyzed for the urinary biomarkers of cocaine, amphetamine, ecstasy, methamphetamine and cannabis u…
Consumo di cannabis e pattern psicopatologico di pazienti al primo episodio psicotico: confronto tra due campioni
2011
Alcuni studi in letteratura supportano l’associazione tra consumo di cannabis, età di esordio ed espressività psicopatologica nei pazienti al primo episodio psicotico (Orlandi, 2001). Questo lavoro si propone di analizzare la gravità della sintomatologia psicotica in relazione al consumo di cannabis, confrontando due campioni di pazienti all'esordio psicotico (FEP) reclutati a Palermo e a Londra.
Spatial differences and temporal changes in illicit drug use in Europe quantified by wastewater analysis
2014
Aims To perform wastewater analyses to assess spatial differences and temporal changes of illicit drug use in a large European population. Design Analyses of raw wastewater over a 1-week period in 2012 and 2013. Setting and Participants Catchment areas of wastewater treatment plants (WWTPs) across Europe, as follows: 2012: 25 WWTPs in 11 countries (23 cities, total population 11.50 million); 2013: 47 WWTPs in 21 countries (42 cities, total population 24.74 million). Measurements Excretion products of five illicit drugs (cocaine, amphetamine, ecstasy, methamphetamine, cannabis) were quantified in wastewater samples using methods based on liquid chromatography coupled to mass spectrom…
La cultura del cannabis treinta años después... unas reflexiones personales
2005
En la primera parte del articulo se expone una síntesis de lo que fue la "cultura del hachís", que aglutinó a los jipis catalanes a finales de los sesenta, y que el autor estudió a principios de los años ochenta. En el punto siguiente, se sintetizan los principales elementos de la actual "cultura del cannabis" en España, haciendo hincapié en el movimiento social que la sustenta.Y en la discusión posterior se constatan las discontinuidades y continuidades entre ambos momentos históricos. Entre estas últimas, se subraya el ambivalente lugar del cannabis, entre la normalización social y su uso como "pretexto represivo", tanto en el campo de la política como en el de la salud.