Dissertations / Theses on the topic 'MDMA'
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Wieliczko, Monika J. "Psychological effects of MDMA." Thesis, Canterbury Christ Church University, 2016. http://create.canterbury.ac.uk/14928/.
Full textAnneken, John H. "Glutamate and MDMA Neurobehavioral Toxicity." University of Cincinnati / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1353342344.
Full textCormick, Justin. "Isotope ratio analysis of 3,4-methylenedioxyamphetamine (MDA) and 3,4-methylenedioxymethylamphetamine (MDMA) synthesised from helional." Thesis, Griffith University, 2022. http://hdl.handle.net/10072/415810.
Full textThesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Environment and Sc
Science, Environment, Engineering and Technology
Full Text
Bósio, Graziela Costa. "Contribuição individual dos enatiômeros isolados da 3,4-metilenodioximetanfetamina (MDMA) comparativamente com a mistura racêmica no estresse oxidativo hepático, renal e estriatal de ratos." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/9/9141/tde-19062013-160903/.
Full textMDMA (3,4-methylenedioxymethamphetamine) is an amphetamine derivate that is largely used for recreational purpose due to its feeling of euphoria, energy and the desire to socialize. Although MDMA has the reputation of being safe, a growing number of clinical reports and experimental studies indicate that MDMA can produce toxicity in the CNS, kidney, liver and heart.Although MDMA is present in ecstasy tablets as a racemate (a 50% mixture of its enantiomer) it has an enantioselective metabolism; in rats, the S-enantiomer is metabolized faster than the R-enantiomer and it is the more active pharmacological form. As the MDMA biotransformation can produce reactive metabolites, probably the R form has a greater potential to generate ROS / ERN and oxidative damage in tissues than the S. In humans, the opposite occurs. Therefore, this aim of the present study was to evaluate the individual contribution of single MDMA enantiomers, compared to racemic mixture in liver, kidney and striatal rats oxidative stress. Adult male Wistar rats (180- 220g) will be divided into four groups: control treatment (saline), racemic MDMA, R-MDMA and S-MDMA (two consecutive doses 24h apart with 10mg/kg, gavage). Oxidative stress status parameters will be used to measure malondialdehyde formation, the reduced glutathione levels determination and the glutathione-S-transferase activity. The enantiomers of racemic MDMA were separated by liquid chromatography high-efficiency chiral stationary phase. The enantiomers showed a high degree of purity and a good recovery. Our results showed that the total glutathione content in liver of rats in R,S-MDMA and R-MDMA group was significantly lower than the control and S-MDMA, revealing that the R-enantiomer that contributes to hepatic glutathione depletion induced by the racemic mixture. The high reactivity of the R enantiomer in the liver can also be observed in animals treated with R-MMDA, since there was a significantly increased production of MDA, compared with other treated and control groups. The total glutathione content in kidney was significantly lower for all treated groups compared with control. With respect to the striatum, only animals treated with the S isomer alone showed a significant decrease in GST activity compared to other treatment and control groups. Taking all these data together, this study shows that the isolated enantiomers of MDMA can act differently with regard to the redox state, mainly in the liver, since the R isomer was the largest contributor to oxidative damage.
Christian, Michael. "Exploring MDMA and its therapeutic potential." Honors in the Major Thesis, University of Central Florida, 2012. http://digital.library.ucf.edu/cdm/ref/collection/ETH/id/672.
Full textB.S.
Bachelors
Sciences
Psychology
Bhide, Nirmal S. "Tolerance to MDMA-induced serotonergic neurotoxicity." University of Cincinnati / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1267719790.
Full textCosta, José Luiz da. "Determinação de 3,4-metilenodioximetanfetamina (MDMA - Ecstasy), 3,4-metilenodioxietilanfetamina (MDEA - Eve) e 3,4-metilenodioxianfetamina (MDA) em fluidos biológicos por cromatografia líquida de alta eficiência: aspecto forense." Universidade de São Paulo, 2004. http://www.teses.usp.br/teses/disponiveis/9/9141/tde-11032005-190039/.
Full textThere is a worldwide increase in the use of the synthetic drugs of abuse known as designer drugs. The main representatives of this class are Ecstasy or 3,4-methylenodioxymethamphetamine (MDMA) and Eve or 3,4- methylenodioxyethylamphetamine (MDEA), substances with stimulant and hallucinogenic effects. In Brazil media coverage of them is on the increase and their recreational is in evidence by the growing numbers of patients who seek treatment at drug treatment centers. This paper validates the analytical methodology for the laboratory diagnosis of the use of MDMA, MDEA and their product of biotransformation, 3,4-methylenodioxyamphetamine (MDA), in whole blood and urine by high performance liquid chromatography with fluorescence. The developed methods showed good linearity, precision, accuracy, yield and capacity to detect analytes even when present in low concentrations, which enables its application in cases high intoxication as well as in cases of the recreational use of these drugs of abuse.
Yubero, Lahoz Samanta 1985. "MDMA pharmacology in humans and serotonergic effects." Doctoral thesis, Universitat Pompeu Fabra, 2013. http://hdl.handle.net/10803/145481.
Full textLa 3,4-metilendioximetanfetamina (MDMA, èxtasi) és una de les drogues més consumides al món. Aquesta droga inhibeix el seu propi metabolisme, inhibint un enzim polimòrfic del fetge, el CYP2D6, que és el responsable de l’eliminació d’una quarta part dels medicaments. Aquest fet té implicacions clíniques rellevants, ja que els consumidors de MDMA presenten una prevalença de psicopatologia més alta respecte a la població no consumidora, i moltes de la patologies psiquiàtriques es tracten amb fàrmacs substrats d’aquest enzim. A més, encara no s’ha discernit com aquesta droga pot ser eliminada de l’organisme, inclús després d’haver-ne consumit dosis de manera repetida. Així doncs, la primera part d’aquesta tesi es centra en estudiar l’autoinhibició de la MDMA determinant l’activitat de diferents enzims del fetge, en homes i dones. Encara que la farmacologia de la MDMA està descrita a fons, no està del tot clar quin és el seu mecanisme d’acció. La MDMA interactua amb el sistema serotonèrgic de diverses maneres, però avui en dia és molt difícil estudiar tècnicament el sistema serotonèrgic en el cervell humà. Les tècniques d’imatge estan limitades per molts factors, i per tant, seria molt útil tenir un índex perifèric a la sang de l’activitat serotonèrgica al sistema nerviós central. La segona part d’aquest tesi s’enfoca en el desenvolupament de tècniques per determinar a diferents nivells si el transportador de la serotonina a les plaquetes podria ser un bon biomarcador perifèric de la seva activitat al cervell, i d’aquesta manera veure si el sistema serotonèrgic està implicat en el mecanisme d’acció de la MDMA.
Lebsanft, Heike Birgit. "MDMA ("Ecstasy") in Tiermodellen des Morbus Parkinson." [S.l.] : [s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=972748601.
Full textABLE, JESSICA ANN. "MDMA ADMINISTRATION AFFECTS COGNITION IN THE RAT." University of Cincinnati / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1147890602.
Full textPalhol, Fabien. "Contribution à l'étude des saisies d'Ecstasy par spectrométrie de masse de rapports isotopiques : apport du rapport 15N/14N." Nantes, 2002. http://www.theses.fr/2002NANT2057.
Full textTurner, Alexandra. "What is the difference between Ecstasy and MDMA?" Thesis, Anglia Ruskin University, 2016. http://arro.anglia.ac.uk/701011/.
Full textTurner, Alexandra. "What is the difference between Ecstasy and MDMA?" Thesis, Anglia Ruskin University, 2016. https://arro.anglia.ac.uk/id/eprint/701011/1/Alexandra_Turner_Thesis_03.03.2016.pdf.
Full textHuff, Courtney L. M. S. "MDMA and Glutamate: Implications for Hippocampal GABAergic Neurotoxicity." University of Cincinnati / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1460444662.
Full textBen, Hamida Sami. "Interactions entre MDMA et éthanol : effets comportementaux, physiologiques et pharmacologiques." Strasbourg, 2009. http://www.theses.fr/2009STRA6036.
Full textEcstasy is commonly used in combination with other drugs, and particularly with alcohol (ethanol). Previous studies performed in the laboratory have shown in Long- Evans rats that ethanol (EtOH) potentiated 3,4-methylenedioxymethamphetamine (MDMA)-induced hyperlocomotion, while protecting against its hyperthermic effects. The present work, in continuation of these observations, provided a fundamental understanding of the pharmacokinetic and pharmacodynamic interactions between MDMA and ethanol. For this purpose, we used physiological, behaviour and pharmacological approaches, complemented by functional neuroimaging studies. We showed that the effects of the interaction between MDMA and ethanol were different from those of the interaction between EtOH and amphetamine or cocaine. We also showed that the effects of ethanol on MDMA-induced hyperthermia were dependent on ambient temperature and on MDMA administration conditions. Finally, we demonstrated that dopamine transmission in the nucleus accumbens was involved in psychomotor action of the combination of MDMA and ethanol. It is probable that MDMA-induced dopamine release within the nucleus accumbens is probably increased by co-administration of ethanol, and this increase might explain the reinforcing effect of the combination of MDMA and ethanol
Fonsart, Julien. "Toxicité aiguë, métabolisme et pharmacocinétique de la 3,4-méthylènedioxyméthamphétamine (MDMA, ecstasy) : influence du sexe chez le rat Sprague-Dawley." Paris 5, 2008. http://www.theses.fr/2008PA05P651.
Full textUse of 3,4-methylenedioxymethamphetamine (MDMA, ecstasy), an illicit designer drug that can lead to life-threatening hyperthermia and serotonin syndrome, has greatly increased over the last years. Men appear to be more sensitive to acute toxicity than are women, with a 4:1 sex-ratio of lethality, and so to its physiological adverse effects. Some studies also reported similar phenomenon in rodents. The present study demonstrates sex-difference in LD50 (18 vs. 42. 5 mg/kg) and hyperthermic effect (0. 9°C) of MDMA in Sprague-Dawley rats, also evaluating metabolic differences between sexes affecting pharmacokinetics of the drug. N-demethylation of MDMA to MDA, a more active and toxic metabolite, is 3. 3-fold more important in vitro using male rats hepatic microsomes, while CYP1A2 catalysing the reaction is twice more active compared to females. Such metabolic discrepancy modifies in a sex-dependent manner the pharmacokinetics of MDMA and its metabolites, which have been evaluated using a liquid chromatography-mass spectrometry method specially designed for the present study and allowing simultaneous quantification of MDMA and its main metabolites. MDA plasma levels appear to be higher in males, whatever the route of administration (subcutaneous or intravenous) of MDMA, caused by a higher metabolism of MDMA than of MDA, and leading to a longer systemic exposure of males rats. Such differences could explain observed sex-difference in lethality, as LD50 of MDA did not differ between sexes. The data suggest that the metabolic differences in amphetamine-related drugs are of major importance for their toxicity, and especially for MDMA
Medina, Krista Lisdahl. "Ecstasy (MDMA) Exposure and Neuropsychological Functioning: A Polydrug Perspective." Cincinnati, Ohio : University of Cincinnati, 2005. http://www.ohiolink.edu/etd/view.cgi?acc%5Fnum=ucin1112218607.
Full textOrejarena, Maria Juliana. "Neurobiological mechanisms involved in MDMA-Seeking behaviour and relapse." Doctoral thesis, Universitat Pompeu Fabra, 2010. http://hdl.handle.net/10803/7229.
Full text(+) 3,4-methylenedioxymethamphetamine (MDMA), commonly known as "ecstasy", is currently a highly consumed drug with liability to produce addiction in some individuals. MDMA induces unique psychoactive effects that clearly distinguish it from hallucinogenic or psychostimulant drugs. MDMA mainly enhances the activity of both the serotonergic and the dopaminergic system in the esolimbic brain reward pathways. However, the neurobiological mechanisms underlying its possible addictive properties are still not fully understood. In the present work, we have contributed to this subject by establishing that the serotonin 5-HT2A receptor, in contrast to what has been observed for other drugs of abuse, is critical for MDMA-induced reinforcement. Moreover, the pharmacological blockade of this receptor can prevent cue-induced relapse. This effect is possibly mediated by its excitatory control over basal and MDMA-induced increase in midbrain dopamine, as supported by our microdialysis data. Furthermore, we have also shown that MDMA can act as an interoceptive cue to induce relapse to cocaine-seeking behaviour. Additionally, we demonstrated differential changes at the level of the dopaminergic brain reward pathway and gene expression changes in different brain areas, following self-administeredMDMAin comparison to passive administration. These results underpin the impact of a learning component in the rewarding/reinforcing properties of MDMA, and provide new evidence for the serotonergic involvement in MDMA-seeking behavior and relapse.
Kuypers, Kim Paula Colette. "Psychedelic bliss: memory and risk taking during MDMA intoxication." [Maastricht : Maastricht : Universiteit Maastricht ] ; University Library, Universiteit Maastricht [host], 2007. http://arno.unimaas.nl/show.cgi?fid=8303.
Full textStraiko, Megan M. W. "Consequences of ± 3,4-methylenedioxymethamphetamine (MDMA) administration in the rat." Cincinnati, Ohio : University of Cincinnati, 2006. http://www.ohiolink.edu/etd/view.cgi?acc%5Fnum=ucin1153777964.
Full textTitle from electronic thesis title page (viewed Sept. 11, 2007). Includes abstract. Keywords: MDMA; neurotoxicity; C-tau; sex behavior; nitric oxide. Includes bibliographical references.
Rodsiri, Ratchanee. "MDMA : binge use and functional outcomes in the rat." Thesis, University of Nottingham, 2009. http://eprints.nottingham.ac.uk/13386/.
Full textEaston, Neil. "3,4-Methylenedioxymethamphetamine (MDMA, Ecstacy) neurotoxicity : role of thioether adducts." Thesis, Nottingham Trent University, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.272853.
Full textSharifimonfared, Ghazaleh. "Pathways through MDMA use : a qualitative life story study." Thesis, University of Hull, 2016. http://hydra.hull.ac.uk/resources/hull:15621.
Full textWareing, M. "Working memory and executive deficits among MDMA (Ecstasy) users." Thesis, Edge Hill University, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.439660.
Full textRoberts, C. A. "Neurophysiological correlates of ecstasy/MDMA use on executive functioning." Thesis, Liverpool John Moores University, 2014. http://researchonline.ljmu.ac.uk/4524/.
Full textHatala, Elaine M. "Characteristics and Predictors of Ecstasy (MDMA) Use During College." Diss., Temple University Libraries, 2008. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/882.
Full textPh.D.
This cross-sectional investigation examined characteristics of ecstasy use during college and associations between ecstasy use during college and demographic factors, family functioning, mental health, and stage of change for ecstasy use. In addition a multivariate model was developed to predict characteristics of ecstasy use during college. An electronic survey was sent to all undergraduate students enrolled at a large urban university in the mid-Atlantic region of the United States during the spring of 2007. Demographic factors and characteristics of ecstasy use were examined using standardized measures employed in national drug use surveys and by the World Health Organization. Measures associated specifically with ecstasy use during college were developed for this investigation. Family functioning was measured with the Parent Adolescent Communication Scale. Mental health was measured with the K6 screening instrument for nonspecific psychological distress. Stage of change was measured with a five-stage algorithm. The final sample for analysis consisted of 194 participants who reported ecstasy use during college and 2849 participants who reported no ecstasy use during college. Data were described using conventional descriptive statistics, chi-square statistics and non-parametric statistics. A logistic regression model was used to identify variables associated with ecstasy use during college. Based on the results, the following generalized conclusions were drawn: ecstasy continues to be used by college students at large urban universities in the mid-Atlantic region of the United States; because the majority of college students reported using ecstasy for the first time during college and also reported using ecstasy for up to two years, it appears that the college environment is a contextual factor for ecstasy use; lower family communication is associated with ecstasy use during college; psychological distress is associated with ecstasy use during college; being white (versus non-white), male (versus female) and having low or moderate (versus high) family communication each is independently associated with ecstasy use during college; differences in stage of change for ecstasy use among ecstasy users and the demographic profile of ecstasy users compared to non-ecstasy users suggest that prevention, education and intervention efforts should be designed to match the unique factors associated with ecstasy use during college.
Temple University--Theses
Gabay, Anthony Stuart. "An investigation of social cognition using psilocybin and MDMA." Thesis, King's College London (University of London), 2017. https://kclpure.kcl.ac.uk/portal/en/theses/an-investigation-of-social-cognition-using-psilocybin-and-mdma(dedc1c2c-5023-4cba-9994-6178214334f3).html.
Full textAlmeida, Stella Pereira de. "Primeiro perfil do usuário de "êxtase" (MDMA) em São Paulo." Universidade de São Paulo, 2000. http://www.teses.usp.br/teses/disponiveis/47/47132/tde-17012006-152155/.
Full textThe present study was aimed at identifying patterns of ecstasy (MDMA) use in the city of São Paulo. Ecstasy users were recruited through the snowball technique. Using the same technique, a control group of subjects that had never tried the drug (non users) was recruited among individuals sharing with users a similar life style. Users (N=52) and non users (N=52) were interviewed in order to obtain socio-demographic data and data on use of psychoactive drugs; users were also questionned as to the circumstances surrounding their use of the drug. Besides, levels of anxiety, depression and impulsiveness were assessed through Spielberger's IDATE Trace Inventory, Beck's Depression Inventory and Barratt Impulsiveness Scale. Both users and non users revealed similar socio-demographic characteristics: most subjects were middle class young heterosexual single men and women who had a college degree. Multiple drug use was more frequent among users than among non users. Other features that were significantly more accentuated among users than among non users were the presence of tattoos and piercings, the frequency to raves and the preference for electronic music. Beck Inventory results pointed to significantly lower depression scores among users. No differences were observed between groups in anxiety and impulsiveness scores. Ecstasy consumption patterns among users are similar to those reported in Europe and Australia: most subjects take one or two pills per episode, during weekends or vacations, usually with company and in social gatherings such as dancings, raves and parties. The drug is predominantly acquired from friends or acquaintances in these same spots. Most users reported consuming ecstasy in combination with other psychoactive drugs, particularly marihuana. The socio-demographic features of users as well as the way they buy and consume the drug suggest that the present pattern of use is not connected to illegal or marginal activities. Harm reduction strategies are suggested in case of ecstasy's use increases and spreads among the young population of the city.
Agostinho, Túlio de Castro. "Análise voltamétrica de 3,4-metilenodioximetanfetamina." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/59/59138/tde-12122012-102825/.
Full textThe main purpose of the present study was to investigate the voltammetric behavior of 3,4-methylenedioxymethanphetamine (MDMA), the psychoactive substance of ecstasy, a drug that has become increasingly popular among drug users. The high performance liquid chromatography technique was employed in order to isolate the substance from ecstasy samples obtained in partnership with Polícia Científica de Ribeirão Preto and also the mass spectrometry technique was employed to confirm the presence of MDMA. The voltammetric studies were performed using the three electrodes system, being glassy carbon as the working electrode, Ag/AgCl as the reference electrode and platinum wire as counter electrode. The electrochemical behavior of the substance was investigated using different voltammetric techniques: Cyclic, differential pulse and square wave voltammetry modalities, in which an anodic peak was observed at Ep = +1,1 V. The voltammetric parameters were optimized in order to make the analysis faster and more sensitive, without loss of quality and intensity of the voltammetric signal. With the voltammetric parameters optimized, analytical curves of the studied analyte were built for the different voltammetric techniques. It was possible to determine the content of MDMA in the five different ecstasy samples utilized, in which four showed MDMA with contents ranging from 3 to 10% (m/m) and one in which no MDMA was observed but another drug, lidocaine.
Fallon, John Kevin. "Stereospecific analysis and enantiomeric disposition of 3,4-methylenedioxymethamphetamine (MDMA) in man." Thesis, King's College London (University of London), 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.313776.
Full textLeão, Anabela Pereira. "Lesões musculares esqueléticas induzidas pela MDMA (‘Ecstasy’) e pelo exercício físico." Master's thesis, Universidade de Aveiro, 2003. http://hdl.handle.net/10773/18837.
Full textCom este trabalho procurou-se estudar, no músculo soleus de ratinho, os efeitos da administração da MDMA e da sua associação com o exercício físico. Para isso utilizaram-se 72 ratinhos Charles River CD1, distribuídos ao acaso por quatro grupos experimentais (n=18/grupo), que foram sujeitos à administração intraperitoneal de soro fisiológico e/ou 3,4- metilenodioxometanfetamina (MDMA) na dose de 10 mg/Kg. Destes grupos organizaram-se subgrupos (n=6), dos quais alguns foram submetidos ao exercício físico em tapete rolante, no plano horizontal, durante 90 minutos, a 75% da velocidade máxima dos animais Procedeu-se à avaliação de diferentes parâmetros, metabólico (temperatura subcutânea), bioquímico plasmático (creatina cínase-CK) e bioquímicos musculares (mieloperoxidase–MPO e Nacetil ?-glucosaminidase–NAG), em diferentes momentos de avaliação (0, 24 e 48 horas após a administração intraperitoneal de solução salina e/ou MDMA). Todo o protocolo experimental foi acompanhado pela avaliação morfológica do tecido muscular esquelético à luz da microscopia óptica e electrónica, quantificando-se as fibras lesadas (alteração do padrão estriado, vacuolização sarcoplasmática, necrose segmentar e núcleos em posição central). Neste contexto verificou-se que a CK plasmática apresentava o pico de actividade enzimática imediatamente após o exercício para todos os grupos experimentais. Constatou-se ainda que a MDMA produziu um efeito hipertérmico significativo nos animais, não se verificando qualquer influência do exercício físico. A análise morfológica demonstrou que a acção exercida pela MDMA originou, uma lesão muscular extensa expressa pelo número de fibras lesadas. Averiguou-se ainda que esta droga de abuso causa um infiltrado essencialmente linfocitário, verificando-se o pico às 24 horas após o exercício, sendo progressivamente substituído por neutrófilos e/ou macrófagos, como indiciam os valores da MPO e NAG. Pode-se concluir que a MDMA possui um efeito tóxico sobre as fibras musculares e que se prolongam por mais tempo para o grupo que foi sujeito em simultâneo ao exercício físico, o que pronuncia um fenómeno lesivo mais intenso.
This work presents the in vivo performed study for the evaluation of MDMA’s skeletal muscle toxicity, in an attempt to contribute for the understanding of the possible mechanisms involved in this effect. For this purpose were used 72 Charles River CD-1 mice (30-40g), randomly distributed by 4 groups (n=18 mice/group), and submitted to an i.p. injection of 0,1 mL of sterile saline and 10mg/Kg of 3,4-methylenedioxymethamphetamine (MDMA), using sterile saline as vehicle. Some of these groups were subjected to a treadmill level run at 75% of the maximal speed of these mice, during 90 minutes. Immediately before sacrifice 1 mL of blood was collected from inferior vena cava of all animals to quantify plasma creatine kinase activity as an indirect marker of skeletal muscle injury. Both soleus muscles were completely removed, homogenised, and the supernatant was used to the determination of biochemical parameters: N-acetyl-glucosaminidase and mieloperoxidase at different evaluation moments (0, 24 and 48 hours after injection). Cross sections and longitudinal sections of soleus fibers were morphometrically evaluated using a light microscope for an estimation of the percentage of fibers showing any structural alterations (alterations of the striation pattern, sarcoplasmic vacuolisation, segmental necrosis and central nuclei). Ultrathin sections were examined in a Hitachi H9000-NA electron microscope for a qualitative evaluation of the ultrastructure alterations. It was shown that MDMA produces a toxic effect on muscle fibers, observed by the creatine kinase release 90 minutes after the injection, for all o the experimental groups. It was also verified that MDMA produced a significant hyperthermic effect in the animals. The morphological evaluation demonstrated that MDMA induce an extense muscle damage, exposed by the number of damaged fibers. Furthermore, the MDMA administration results in a lymphocyte infiltrate, 24 hours after exercise, observed in the muscle fibers cross sectional areas. These cells were progressively replaced by neutrophils or macrophages, as demonstrated by the activities of myeloperoxidase and N-acetyl-? - glucosaminidase. It can be concluded that the administration of MDMA produced an extreme muscle injury longer in the animals that were submitted to a simultaneous physical exercise, which denotes a more damaging process.
Hoshi, Rosa. "The neuropharmacological, cognitive and mood effects of ±3,4-methylenedioxymethamphetamine (MDMA, 'ecstasy')." Thesis, University College London (University of London), 2006. http://discovery.ucl.ac.uk/1445586/.
Full textSoar, Kirstie. "Problematic and non-problematic ecstasy (MDMA) usage : cognitive and psychopathological aspects." Thesis, University of East London, 2005. http://roar.uel.ac.uk/3408/.
Full textBeveridge, Thomas James Ramsey. "An investigation into the neuronal activity induced by direct and indirect 5-HTâ‚‚ agonists as indicated by Arc mRNA." Thesis, De Montfort University, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.271936.
Full textO'Mahony, Brian. "Clinical and toxicological significance of the involvement of the cytocrhome p450 system in the metabolism of 3,4-methylenedioxymethamphetamine." Doctoral thesis, Universitat Pompeu Fabra, 2008. http://hdl.handle.net/10803/7209.
Full textMontgomery, Catharine Anne. "The differential effects of MDMA (ecstasy) use on executive and memory processes." Thesis, Liverpool John Moores University, 2006. http://researchonline.ljmu.ac.uk/5775/.
Full textNair, Sunila. "Effects of 3,4-methylenedioxymethamphetamine (MDMA) on Cholinergic neurons in the rat brain." University of Cincinnati / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1123857787.
Full textBattisti, Murilo Campos [UNIFESP]. "Seguimento por cinco anos de uma amostra de usuários de ecstasy (MDMA)." Universidade Federal de São Paulo (UNIFESP), 2009. http://repositorio.unifesp.br/handle/11600/10070.
Full textEcstasy (MDMA) é uma droga que possui importante ação neurotóxica. O seu uso é descrito como um fenômeno jovem. A pesquisa teve por objetivo estudar longitudinalmente uma amostra de usuários de ecstasy entrevistada em 2001 em São Paulo e re-entrevistada entre 2005 e 2006 a fim de observar mudanças no padrão de consumo da droga. A coleta de dados ocorreu por meio de entrevistas semi-estruturadas e casos de dependência foram avaliados por meio do DSM-IV. Utilizou-se a metodologia qualitativa com duas fases de entrevista: entrevista inicial (32 entrevistados) e follow-up (21 re-entrevistados). As entrevistas foram gravadas, transcritas literalmente e submetidas à análise de conteúdo. A média de idade da amostra foi de 24,8 anos na fase inicial e 28,7 anos na fase follow-up. Três cenários foram observados: a) uso transicional (n=14) – marcado por acentuada redução ou abandono do consumo de ecstasy ao longo do período investigado; b) uso habitual de longo prazo (n=06) - manutenção no padrão de consumo de ecstasy ou discreta moderação; uso compulsivo de longo prazo (n=01) – aumento em mais de 50% no consumo de ecstasy ao longo dos anos. O uso de álcool e maconha manteve-se inalterado ao longo do período investigado. Quatro sujeitos relataram aumento no consumo de cocaína e seis fizeram menção à iniciação no uso de metanfemina. Observou-se que para uma parte dos entrevistados o ecstasy se caracterizou como uma droga transicional. Para outro grupo o uso de ecstasy se caracterizou por ser uma experiência duradoura.
Ecstasy (MDMA) is an important neurotoxic agent. Its use is described as a youth-limited phenomenon. The aims were to determine the natural course of ecstasy use within a five year timeframe in a sample of Brazilian young adults and to assess changes in ecstasy use patterns. Interviews took place in two waves: 2001 in São Paulo and in 2005/06. Data collection occurred through semi-structured interviews. The DSM-IV was used to assess ecstasy dependence. Qualitative method was utilized during the baseline sample (n=32) and the follow-up sample (n=21). All interviews were fully recorded, transcribed and interpreted though content analysis. Subjects’ average age was 24.8 years in the baseline group and 28.7 years in the follow-up. Three scenarios emerged: (A) the transient use group (n=14) either quit using ecstasy or cut down use significantly; (B) the long term habitual use (n=06) group maintained or cut down slightly on MDMA use; (C) the compulsive use group (n=01) increased ecstasy use by more than 50% over the course of the study. As ecstasy use shifts occurred, alcohol and marijuana consumption remained unaltered. Four respondents reported increases in cocaine use, and six subjects mentioned initiation in crystal methamphetamine use. For a group of respondents ecstasy use was a transient phenomenon. For another group of subjects MDMA use manifested as a lasting experience.
TEDE
BV UNIFESP: Teses e dissertações
Kohutek, Jodi Lynn. "Long-term effects of 3,4- Methylenedioxymethamphetamine (MDMA) on serotonergic and dopaminergic functioning." CSUSB ScholarWorks, 2003. https://scholarworks.lib.csusb.edu/etd-project/2305.
Full textBrown, John Anthony, and John Brown@anu edu au. "The pattern of memory and perceptual dysfunctions in recreational ecstasy users." The Australian National University. Faculty of Science, 2006. http://thesis.anu.edu.au./public/adt-ANU20060407.155643.
Full textDavis, Alan Kooi. "Development and Initial Evaluation of an Ecstasy Craving Questionnaire." Bowling Green State University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1335999475.
Full textTomillero, Alemany Àngels. "Farmacología clínica de la Metilenodioximetanfetamina (MDMA, éxtasis) tras su administración a dosis repetidas." Doctoral thesis, Universitat Autònoma de Barcelona, 2001. http://hdl.handle.net/10803/5368.
Full textSe diseñó un ensayo clínico a doble ciego, cruzado, controlado con placebo, con asignación aleatoria de las condiciones de tratamiento según un cuadrado latino de 4x4 balanceado. Participaron un total de ocho voluntarios sanos consumidores habituales de MDMA. Cada sujeto participo en cuatro sesiones, una para cada condición de tratamiento, separadas por al menos una semana de periodo de blanqueo. Las cuatro condiciones de tratamiento fueron: MDMA 100 mg + placebo (MDMA primera administración); placebo + MDMA 100 mg (MDMA segunda administración), MDMA 100 mg + MDMA 100 mg (MDMA dosis múltiple) y placebo + placebo (Placebo).
Tras la administración repetida se observaron aumentos significativos de la presión arterial sistólica, la frecuencia cardiaca y la temperatura respecto a la dosis única. Estos aumentos no alcanzaron los esperables por el principio de superposición o suma simple de los efectos de las dos dosis. En el caso de la presión arterial diastólica la segunda administración de la dosis múltiple registró aumentos similares a los esperados por superposición. Ello sugiere que podría existir tolerancia aguda en algunas de estas variables. El rendimiento psicomotor y la tensión muscular medida por la esoforia en el ala de Maddox mostraron cambios significativos respecto a la dosis única. Los incrementos fueron incluso mayores de los esperables por el principio de superposición tras la dosis repetida. No parece existir tolerancia, y en el caso de la tensión muscular podría incluso existir una posible sensibilización. En el caso de los efectos subjetivos, la dosis repetida produjo globalmente incrementos mayores que la dosis única en las escalas de euforia, estimulación, efectos desagradables y cambios en las percepciones. En el caso de los efectos de euforia y estimulación fueron parecidos a los previstos según el principio de superposición. En ningún caso se presentaron alucinaciones ni síntomas sugestivos de alteraciones psicóticas. Las concentraciones plasmáticas de cortisol y prolactina tras la dosis repetida fueron similares a las obtenidas tras una dosis única, sugiriendo tolerancia.
La concentración plasmática máxima de la MDMA tras la segunda administración de la dosis repetida superó en un 20% la que hubiera sido esperable por la suma de las dos dosis administradas. En cuanto a la concentración de HMMA, prácticamente no aumentó tras la segunda dosis, observándose niveles similares a los obtenidos tras una dosis única y por ello un 45 % menores de los esperados. La formación de la HMMA parece inhibirse por la presencia previa de MDMA y/o sus metabolitos. Integrando los efectos farmacológicos y las concentraciones plasmáticas de MDMA, se observa una clara tolerancia aguda en todas las variables estudiadas excepto para la tensión muscular y el rendimiento psicomotor.
La administración de dos dosis consecutivas de MDMA produce una cierta acumulación en las concentraciones plasmáticas de MDMA pero globalmente los efectos farmacológicos son menores de los esperables para esas elevadas concentraciones. Todo ello sugiere la aparición de un fenómeno de tolerancia aguda, que posiblemente es de origen farmacodinámico.
3,4-methylenedioxymethamphetamine (MDMA, ecstasy) is usually consumed in multiple doses along a party session. Till now there aren´t published controlled clinical trial after repetated administration looking for the presentation of acute tolerance or up-regulation that implies toxicity. The goal of this thesis was know the pharmacology of MDMA after repeated administration with an interval of four hours between doses considering pharmacokinetic and the possibility of acute tolerance.
The study design was double-blind, randomized, crossover, and controlled. Treatment conditions were randomly using a balanced 4x4 Latin -square design. Eight healthy male recreational MDMA users participated in four sessions with a 1-week washout period. They were administered twice with a 4 hours interval on each of four experimental sessions. Drug conditions were: MDMA 100mg+ placebo(MDMA first dose), placebo+ MDMA 100mg (MDMA second dose), MDMA 100mg+MDMA 100mg (MDMA repeated administration) and placebo+ placebo (placebo).
Repeated administration significantly increased sistolic blood presure, heart rate and temperature as compared with the first administration. These increases didn´t reach the expected by the superposition criteria. The diastolic blood presure after the second administration increased like the expected by superposition criteria. There were acute tolerance in some of these physiological variables. Psychomotor performance and muscular tension measured by the esoforia in the Maddox -wing increased more than expected considering the pharmacokinetic superposition criteria. Maddox-wing and psychomotor tasks seemed not to be affected by acute tolerance and in the Maddox -wing probably there were a up-regulation phenomenon.
Subjective effects after the repeated administration were increased more as compared with the first administration in scales related to euphoria, stimulated, bad effects and changes in perceptions. The effects related to euphoria and stimulated were similar with the expected by the superposition criteria. No hallucinations or psychotic episodes were observed among subjects during the study.
Plasma concentrations of cortisol and prolactina after the repeated administration were similar as compared with the concentrations after the first administration, this suggested the development of tolerance.
Peak concentration of MDMA after the second administration of the repeated administration was 20% higher than the expected by the superposition criteria. Peak concentration of HMMA after the repeated administration was 45% lower than the expected, this metabolite maybe inhibited by his precursor MDMA or their metabolites.
In summary, the pharmacologic effects observed in relation with the plasma concentrations of MDMA, suggested the development of almost complete tolerance for all the variables essayed except Maddox-wing and psicomotor performance.
Repeated administration of MDMA made plasma accumulation of MDMA but the pharmacologic effects were fewer than expected by these higher concentrations. All of this suggested the development of acute tolerance maybe pharmacodynamic.
Segura, Agulló Mireia. "Interacció farmacològica entre la 3.4-Metilendioximetamfetamina (MDMA, Èxtasi) i la paroxetina en humans." Doctoral thesis, Universitat Pompeu Fabra, 2004. http://hdl.handle.net/10803/7077.
Full textHan estat determinades les concentracions plasmàtiques i urinàries de la MDMA i dels metabòlits més importants de la MDMA, així com les concentracions plasmàtiques de paroxetina juntament amb el seu metabòlit principal.
Dels resultats obtinguts, la tesi conclou que l'HHMA és un metabòlit rellevant en la disposició metabòlica de la MDMA. L'estudi d'interacció mostra que la MDMA veu reduït el seu metabolisme oxidatiu al voltant d'un 30% i que ambdós compostos mostren una interacció metabòlica. El CYP2D6 podria contribuir in vivo en l'O-demetilenació de la MDMA en un 30%.
3,4-methylenedioxymethamphetamine (MDMA) is a synthetic amphetamine derivative misused among youths for recreational purposes. It has been postulated that 3,4-dihydroxymethamphetamine (HHMA), a metabolite resulting from the O-demethylenation of MDMA through CYP2D6 may play a role in the development of the neurotoxicity. Thus, one of the major aims of the thesis was to establish HHMA relevance, from a quantitative point of view, in MDMA metabolism. Moreover, CYP2D6 is a polymorphic enzyme and the participation of CYP2D6 in the oxidative metabolism of MDMA may suggest an increased risk for acute toxicity in poor metabolizers for this enzymatic activity. MDMA is sometimes consumed concomitantly with selective serotonin reuptake inhibitors (SSRI). Some SSRI are potent CYP2D6 inhibitors such as paroxetine or fluoxetine and a metabolic interaction between these drugs and MDMA could be expected. Thus, interaction studies of MDMA with SSRI may be an in vivo approach to evaluate the contribution of CYP2D6 on MDMA disposition and the effects of the co-administration of both compounds. The major objective was to assess the contribution of CYP2D6 to MDMA disposition using paroxetine as a metabolic probe inhibitor. It was carried out a clinical trial in humans. The study was randomized, double blind, crossover, and controlled with placebo.
Plasma concentration-time profiles and urinary recoveries of MDMA and main metabolites including HHMA were obtained. Paroxetine and its main metabolite (hydroxy-methoxy-paroxetine) plasma concentrations were also determined.
From the results obtained, it is conclude that HHMA is a relevant metabolite on MDMA disposition in humans. The interaction study shows a 30% reduction of MDMA metabolic disposition and both MDMA and paroxetine show a pharmacodynamic interaction. It is estimated that CYP2D6 may accounts for a 30% of MDMA O-demethylenation in humans.
Pizarro, Lozano Mª Nieves. "La Influència de l'estereroquímica en el metabolisme de la 3,4-metilendioximetamfetamina (MDMA, èxtasi)." Doctoral thesis, Universitat Pompeu Fabra, 2004. http://hdl.handle.net/10803/7079.
Full textLa MDMA té un centre estereogènic. Es consumeix com a racemat, però els enantiòmers tenen perfils farmacològics diferenciats. A més, la MDMA té una depuració metabòlica enantioselectiva i autoinhibible (CYP2D6).
Aquesta tesi presenta l'enantioselectivitat de la depuració metabòlica de la MDMA en consumidors recreatius participants d'un assaig clínic (dosi: 100 mg).
Es sintetitzà material de referència i es desenvolupà metodologia per a l'anàlisi enantioselectiu i diastereoselectiu dels compostos.
S'estudià l'enantioselectivitat en el metabolisme fins a 48h post-administració, obtenint-se raons (R)-MDMA/(S)-MDMA>1 i en augment amb el temps. Les raons del metabòlits majoritaris foren pràcticament constants i properes a 1, possiblement degut a la inhibició metabòlica del CYP2D6 i a la participació d'altres enzims no enantioselectius.
La MDMA es la cabeza de serie de los entactógenos. Su consumo provoca toxicidad aguda y neurodegeneración serotonérgica a medio/corto plazo. Se postula que una bioactivación metabólica podría ser responsable del desarrollo de neurotoxicidad.
La MDMA tiene un centro estereogénico. Se consume como racemato, pero los enantiómeros tienen perfiles farmacológicos diferenciados. Además, presenta depuración metabólica enantioselectiva y autoinhibible (CYP2D6).
Esta tesis presenta la enantioselectividad de la depuración metabólica de la MDMA en consumidores recreativos participantes de un ensayo clínico (dosis: 100 mg).
Se sintetizó material de referencia y se desarrolló metodología para el análisis enantioselectivo y diastereoselectivo de los compuestos.
Se estudió la enantioselectividad en el metabolismo hasta 48h post-administración, obteniéndose relaciones (R)-MDMA/(S)-MDMA>1 y en aumento con el tiempo. Las relaciones de los metabolitos mayoritarios fueron prácticamente constantes y cercanas a 1, posiblemente debido a la inhibición metabólica del CYP2D6 y a la participación de otros enzimas no enantioselectivos.
MDMA is the head of entactogenic compounds. Its consumption causes acute toxicity and mid/long term serotonergic neurodegeneration. It is postulated that a metabolic bioactivation may be responsible for development of neurotoxicity.
MDMA has a stereogenic center. It is consumed as a racemate, but its enantiomers have different pharmacological profiles. Also, MDMA presents an enantioselective and self-inhibited metabolic disposition (CYP2D6).
The present thesis shows data about enantioselective metabolic disposition of MDMA in recreative consumers that participated in a clinical trial (dose: 100 mg).
It was synthesised reference material and it was developed methodology for both enantioselective and diastereoselective analysis MDMA and its main metabolites.
It was studied the enantioselectivity in the metabolism after 48h post-administration. (R)-MDMA/(S)-MDMA ratios were >1 and increasing over time. Major metabolites ratios were practically constant and close to 1, possibly because of the metabolic inhibition of CYP2D6 and the role of other non-enantioselective enzymes.
Pachmerhiwala, Rashida. "Relationships between MDMA induced increases in extracellular glucose, glycogenolysis in brain and hyperthermia." Cincinnati, Ohio : University of Cincinnati, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1204751566.
Full textAdvisor: Gary Gudelsky PhD. Title from electronic thesis title page (viewed May 7, 2008). Includes abstract. Keywords: MDMA, glucose, serotonin, norepinephrine,glycogenolysis,hyperthermia. Includes bibliographical references.
Kolyaduke, Olga. "Long term effects of MDMA administration in rats during early and late adolescence." Thesis, University of Canterbury. Psychology, 2011. http://hdl.handle.net/10092/5571.
Full textSaadat, Kathryn S. "Studies on the acute and long-term effects of MDMA (3, 4- methylenedioxymethamphetamine)." Thesis, De Montfort University, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.438901.
Full textSola, Evan M. "MDMA-Assisted Psychotherapy for PTSD| A Thematic Analysis of Transformation in Combat Veterans." Thesis, California Institute of Integral Studies, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10813306.
Full textPost-traumatic stress disorder (PTSD) is a common psychological effect of military combat. However, little empirical research has been done to highlight specific complications and needs in treating this population, and even less has been done using the psychedelic drug MDMA. This study used the qualitative research method of thematic analysis to explore the lived experiences of combat veterans engaged in MDMA-assisted psychotherapy for PTSD. This study reviewed video, as well as narrative data from MDMA psychotherapy sessions. Thematic analysis was used to analyze the transcribed audio data. The specific primary aim of the present study was to investigate the following research question: What is the lived experience of combat veterans in MDMA-assisted psychotherapy sessions, and how can this experience be understood through a psychotherapeutic perspective on well-being? Exploration of psychoanalytic and transpersonal aspects of the psychotherapy process are highlighted in their facilitation of healing in combat veterans.
Renoir, Thibault. "Mécanismes sérotoninergiques sous-tendant les effets de la MDMA ("ecstasy") chez la souris." Paris 5, 2008. http://www.theses.fr/2008PA05P608.
Full textThe appetitive effects of MDMA have been evaluated using self-administration and microdialysis procedure. We’ve also studied putative long term adaptative changes following MDMA teatment. Our data show that 5-HTT-/- mice did not self-administrate MDMA when wild-type mice did. The absence of self-administration exhibited by 5-HTT-/- mice could be related to the blunted MDMA-induced 5-HT release observed in these same KO mice. About the long term effects of MDMA, we’ve found an increase of 5-HT1A autoreceptor sensitivity associated with a decrease of 5-HT tissue levels. Our data suggest also a decrease of cell proliferation 28 days after the MDMA treatment in WT mice. Finally MDMA-treated mice displayed a depressive-like behavior compared to saline-teated mice using the forced swim test. Interestingly all the adaptative changes following MDMA treatment were observed in WT mice but not in 5-HTT-/- mice
PACHMERHIWALA, RASHIDA. "Relationships between MDMA induced increases in extracellular glucose, glycogenolysis in brain and hyperthermia." University of Cincinnati / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1204751566.
Full text