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https://www.readbyqxmd.com/read/27901585/a-review-of-positron-emission-tomography-studies-exploring-the-dopaminergic-system-in-substance-use-with-a-focus-on-tobacco-as-a-co-variate
#1
Thulasi Thiruchselvam, Saima Malik, Bernard Le Foll
With the evolving sensitivity of positron emission tomography (PET) and the emergence of novel radiotracers, greater insight has been gained into the dopaminergic system as it relates to substance use. In this review, we summarize PET investigations from the last ten years that explore the dopaminergic system in tobacco, alcohol, stimulant, opiates, and cannabis addiction. In light of the prevalence of substance co-use, this review will also explore the effect of tobacco and other substance abuse co-morbidity on the dopaminergic system across study samples in the reviewed literature...
November 30, 2016: American Journal of Drug and Alcohol Abuse
https://www.readbyqxmd.com/read/27888955/emotion-dysregulation-mediates-between-childhood-emotional-abuse-and-motives-for-substance-use
#2
Usha Barahmand, Ali Khazaee, Goudarz Sadeghi Hashjin
The purpose of this study is to assess the relative mediating effects of impulsivity and emotion dysregulation in the relationship between childhood maltreatment and motives for opiate use. Seventy four adolescent users of Tramadol, a synthetic opiate, were recruited from a boot camp for de-addiction and rehabilitation services for the study. Data were collected between May, 2014 and November, 2014. Participants completed assessments of childhood abuse history, difficulties regulating emotions, impulsiveness and motives for substance use as well as a socio-demographic information sheet...
December 2016: Archives of Psychiatric Nursing
https://www.readbyqxmd.com/read/27884570/a-gc-ms-method-for-the-detection-and-quantitation-of-ten-major-drugs-of-abuse-in-human-hair-samples
#3
A Orfanidis, O Mastrogianni, A Koukou, G Psarros, H Gika, G Theodoridis, N Raikos
A sensitive analytical method has been developed in order to identify and quantify major drugs of abuse (DOA), namely morphine, codeine, 6-monoacetylmorphine, cocaine, ecgonine methyl ester, benzoylecgonine, amphetamine, methamphetamine, methylenedioxymethamphetamine and methylenedioxyamphetamine in human hair. Samples of hair were extracted with methanol under ultrasonication at 50°C after a three step rinsing process to remove external contamination and dirt hair. Derivatization with BSTFA was selected in order to increase detection sensitivity of GC/MS analysis...
November 10, 2016: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/27864947/determining-the-toxicological-significance-of-pregabalin-in-fatalities
#4
Simon P Elliott, Timothy Burke, Christopher Smith
Pregabalin has become more widely prescribed and abused in recent years but is still not always included in laboratory analysis. An LC-MS-MS method has been developed and applied to measure pregabalin in 93 postmortem cases, including drug-related deaths, alternative causes of death, and fatalities where pregabalin was likely to have contributed to death. Other drugs or alcohol was detected, and the most common drug types (in decreasing frequency) were antidepressants, opioids, benzodiazepines, opiates, alcohol, antipsychotics, cocaine, cardiac drugs, amphetamines, cannabis, anticonvulsants, and antihistamines...
November 16, 2016: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/27863698/striatal-h3k27-acetylation-linked-to-glutamatergic-gene-dysregulation-in-human-heroin-abusers-holds-promise-as-therapeutic-target
#5
Gabor Egervari, Joseph Landry, James Callens, John F Fullard, Panos Roussos, Eva Keller, Yasmin L Hurd
BACKGROUND: Opiate abuse and overdose reached epidemic levels in the United States. However, despite significant advances in animal and in vitro models, little knowledge has been directly accrued regarding the neurobiology of the opiate-addicted human brain. METHODS: We used postmortem human brain specimens from a homogeneous European Caucasian population of heroin users for transcriptional and epigenetic profiling, as well as direct assessment of chromatin accessibility in the striatum, a brain region central to reward and emotion...
September 28, 2016: Biological Psychiatry
https://www.readbyqxmd.com/read/27853327/the-effects-of-maternal-opium-abuse-on-fetal-heart-rate-using-non-stress-test
#6
Fatemeh Keikha, Fahimeh Ghotbizadeh Vahdani, Sahar Latifi
BACKGROUND: Opium is one of the most commonly abused opiates in developing countries including Iran. Considering the importance of maternal health on the newborn, we aimed to assess the effect of opium abuse on fetal heart rate (FHR) characteristics in a sample of pregnant women in Zahedan, Southeast Iran. METHODS: This cross-sectional study was done on 100 pregnant women referring to Ali-Ibn-Abi Talib Hospital in Zahedan, during 2011-2013. The participants were divided into two groups comprising of opium abusers and healthy individuals...
November 2016: Iranian Journal of Medical Sciences
https://www.readbyqxmd.com/read/27833235/an-unusual-case-of-baclofen-abuse
#7
Soumitra Das, Dhanya Sasidharan Palappalllil, Sumesh Thoppil Purushothaman, Varun Rajan
Baclofen was initially used for the treatment of spastic conditions. Last decade has seen its emergence as a treatment of profound interest in alcohol dependence, opiates and cocaine abuse, and tobacco addiction. However, the published literature on baclofen abuse is sparse. Here, we report a patient with baclofen abuse.
September 2016: Indian Journal of Psychological Medicine
https://www.readbyqxmd.com/read/27803502/effect-of-intravenous-acetaminophen-on-postoperative-opioid-consumption-in-adult-orthopedic-surgery-patients
#8
Nwamaka Nwagbologu, Preeyaporn Sarangarm, Richard D'Angio
Background: Postoperative pain is managed with opioids, which are associated with adverse effects. The efficacy of intravenous (IV) acetaminophen in reducing opioid consumption has been studied with inconsistent results. The primary outcome of this study was to assess the effect of IV acetaminophen on opioid consumption 24 hours postoperatively. Secondary outcomes included the opiate consumption at 48 hours after the operation, opioid-related side effects 72 hours after the operation, discharge disposition, and length of stay...
October 2016: Hospital Pharmacy
https://www.readbyqxmd.com/read/27767406/racial-and-ethnic-differences-in-substance-use-diagnoses-comorbid-psychiatric-disorders-and-treatment-initiation-among-hiv-positive-and-hiv-negative-women-in-an-integrated-health-plan
#9
Erik David Storholm, Michael J Silverberg, Derek D Satre
Access to substance use disorder (SUD) treatment is a critical issue for women with HIV. This study examined differences in SUD diagnoses, comorbid psychiatric diagnoses, and predictors of SUD treatment initiation among a diverse sample of HIV-positive women (n = 228) and a demographically similar cohort of HIV-negative women (n = 693). Diagnoses and service utilization data were obtained from electronic health records of members of a large integrated healthcare system in Northern California. HIV-positive women were less likely to initiate SUD treatment...
November 2016: Journal of Psychoactive Drugs
https://www.readbyqxmd.com/read/27729240/transgenerational-attenuation-of-opioid-self-administration-as-a-consequence-of-adolescent-morphine-exposure
#10
Fair M Vassoler, David J Oliver, Cristina Wyse, Ashley Blau, Michael Shtutman, Jill R Turner, Elizabeth M Byrnes
The United States is in the midst of an opiate epidemic, with abuse of prescription and illegal opioids increasing steadily over the past decade. While it is clear that there is a genetic component to opioid addiction, there is a significant portion of heritability that cannot be explained by genetics alone. The current study was designed to test the hypothesis that maternal exposure to opioids prior to pregnancy alters abuse liability in subsequent generations. Female adolescent Sprague Dawley rats were administered morphine at increasing doses (5-25 mg/kg, s...
October 8, 2016: Neuropharmacology
https://www.readbyqxmd.com/read/27720326/exploration-of-bivalent-ligands-targeting-putative-mu-opioid-receptor-and-chemokine-receptor-ccr5-dimerization
#11
Christopher K Arnatt, Bethany A Falls, Yunyun Yuan, Thomas J Raborg, Ruturaj R Masvekar, Nazira El-Hage, Dana E Selley, Anthony V Nicola, Pamela E Knapp, Kurt F Hauser, Yan Zhang
Modern antiretroviral therapies have provided HIV-1 infected patients longer lifespans and better quality of life. However, several neurological complications are now being seen in these patients due to HIV-1 associated injury of neurons by infected microglia and astrocytes. In addition, these effects can be further exacerbated with opiate use and abuse. One possible mechanism for such potentiation effects of opiates is the interaction of the mu opioid receptor (MOR) with the chemokine receptor CCR5 (CCR5), a known HIV-1 co-receptor, to form MOR-CCR5 heterodimer...
November 15, 2016: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/27681340/determination-of-drugs-of-abuse-in-a-single-sample-of-human-teeth-by-a-gas-chromatography-mass-spectrometry-method
#12
Giovanni Ottaviani, Roberto Cameriere, Marta Cippitelli, Rino Froldi, Giovanna Tassoni, Massimiliano Zampi, Mariano Cingolani
The purpose of this study was to develop and validate a gas chromatography-mass spectrometry method to detect drugs of abuse in a single sample of tooth. Pulverized samples of dental materials were subjected to acid hydrolysis to detect opiates, cocaine and their metabolites. The residual dental materials from these analyses were subjected to basic extraction to detect cannabis products (Δ(9)-tetrahydrocannabinol, cannabidiol and cannabinol). The method showed a good linearity between 0.05 and 2 ng/mg for all substances...
September 27, 2016: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/27660078/naloxone-blocks-the-aversive-effects-of-electrical-stimulation-of-the-parabrachial-complex-in-a-place-discrimination-task
#13
María M Hurtado, Raquel García, Amadeo Puerto
The parabrachial complex is known to participate in various rewarding and aversive processes, including those related to the learning of taste or place discrimination and the motivational effects of drugs of abuse, such as morphine. This study shows that electrical stimulation of the external lateral parabrachial (LPBe) subnucleus induces consistent place avoidance or place preference in three-compartment rectangular mazes. Administration of naloxone, an opiate antagonist, blocks both motivational effects induced by the intracranial electrical stimulation...
December 2016: Neurobiology of Learning and Memory
https://www.readbyqxmd.com/read/27649645/decision-making-ability-in-current-and-past-users-of-opiates-a-meta-analysis
#14
REVIEW
Kathryn Biernacki, Skye N McLennan, Gill Terrett, Izelle Labuschagne, Peter G Rendell
Opiate use is associated with deficits in decision-making. However, the impact of abstinence and co-morbid factors, like head injury and poly-substance abuse, on this ability, is currently unclear. This meta-analysis aimed to assess 1) the magnitude of decision-making deficits in opiate users; 2) whether co-morbid factors moderate the severity of these deficits; 3) whether ex-opiate users demonstrate smaller decision-making deficits than current users; and 4) whether the length of abstinence is related to the magnitude of decision-making deficits...
September 17, 2016: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/27634143/effects-of-drugs-of-abuse-on-hippocampal-plasticity-and-hippocampus-dependent-learning-and-memory-contributions-to-development-and-maintenance-of-addiction
#15
Munir Gunes Kutlu, Thomas J Gould
It has long been hypothesized that conditioning mechanisms play major roles in addiction. Specifically, the associations between rewarding properties of drugs of abuse and the drug context can contribute to future use and facilitate the transition from initial drug use into drug dependency. On the other hand, the self-medication hypothesis of drug abuse suggests that negative consequences of drug withdrawal result in relapse to drug use as an attempt to alleviate the negative symptoms. In this review, we explored these hypotheses and the involvement of the hippocampus in the development and maintenance of addiction to widely abused drugs such as cocaine, amphetamine, nicotine, alcohol, opiates, and cannabis...
October 2016: Learning & Memory
https://www.readbyqxmd.com/read/27610266/a-study-on-the-reliability-of-an-on-site-oral-fluid-drug-test-in-a-recreational-context
#16
Stefano Gentili, Renata Solimini, Roberta Tittarelli, Giulio Mannocchi, Francesco Paolo Busardò
The reliability of DrugWipe 5A on site test for principal drugs of abuse (cannabis, amphetamines, cocaine, and opiates) detection in oral fluid was assessed by comparing the on-site results with headspace solid-phase microextraction (HS-SPME) gas chromatography-mass spectrometry (GC-MS) analysis on samples extracted by the device collection pad. Oral fluid samples were collected at recreational settings (e.g., discos, pubs, and music bars) of Rome metropolitan area. Eighty-three club goers underwent the on-site drug screening test with one device...
2016: Journal of Analytical Methods in Chemistry
https://www.readbyqxmd.com/read/27600363/acute-naltrexone-does-not-remediate-fronto-striatal-disturbances-in-alcoholic-and-alcoholic-polysubstance-dependent-populations-during-a-monetary-incentive-delay-task
#17
Liam J Nestor, Anna Murphy, John McGonigle, Csaba Orban, Laurence Reed, Eleanor Taylor, Remy Flechais, Louise M Paterson, Dana Smith, Edward T Bullmore, Karen D Ersche, John Suckling, Roger Tait, Rebecca Elliott, Bill Deakin, Ilan Rabiner, Anne Lingford-Hughes, David J Nutt, Barbara Sahakian, Trevor W Robbins
There is a concerted research effort to investigate brain mechanisms underlying addiction processes that may predicate the development of new compounds for treating addiction. One target is the brain's opioid system, because of its role in the reinforcing effects of substances of abuse. Substance-dependent populations have increased numbers of the mu opioid receptor (MOR) in fronto-striatal regions that predict drug relapse, and demonstrate disturbances in these regions during the processing of non-drug rewards...
September 6, 2016: Addiction Biology
https://www.readbyqxmd.com/read/27597254/driving-under-the-effect-of-drugs-hair-analysis-in-order-to-evaluate-recidivism
#18
Giovanna Tassoni, Marta Cippitelli, Dora Mirtella, Rino Froldi, Giovanni Ottaviani, Massimiliano Zampi, Mariano Cingolani
Under Italian law drug addiction and regular drug abuse are incompatible with driving ability. One important problem with the enforcement of the impaired driving law is the large number of people that re-offend. To regain their license, offenders must be drug-free for the duration of an observation period, according to the judgement of a medical commission. The exclusion of illicit drug use is determined by toxicological analysis. A few studies exist that have used a hair matrix to monitor recidivism. Hair is an attractive matrix for monitoring drug recidivism, due to the large time window for drug detection, and to the non-alterability of this matrix...
October 2016: Forensic Science International
https://www.readbyqxmd.com/read/27552788/chronic-treatment-with-opiate-agonists-in-bulgaria-assessing-the-quality-of-life-using-sf-36-v-2
#19
Sava V Petrov, Maria M Orbetzova, Yanko T Iliev, Doychin T Boyadzhiev
INTRODUCTION: Drug addictions to psychoactive substances are disorders with a complex bio-psycho-social genesis, which are characterized with chronic relapses. Substance addiction causes multifactorial damage to the normal functioning of individuals and requires a multicenter approach for the treatment process. AIM: The aim of the study was to assess the quality of life of patients undergoing chronic treatment with the opiate agonist methadone using a standardized questionnaire method in Bulgarian...
April 2016: Folia Medica
https://www.readbyqxmd.com/read/27538548/hot-and-cold-executive-functions-in-pure-opioid-users-undergoing-methadone-maintenance-treatment-effects-of-methadone-dose-treatment-duration-and-time-between-last-methadone-administration-and-testing
#20
U Barahmand, E Tavakolian, A Khazaee, K Mohammadi
CONTEXT: Methadone maintenance is a standard treatment for opiate-dependent individuals. However, deficits in cognitive functioning have been associated with this treatment. AIM: This study aimed to determine the dose and treatment duration-related effects of methadone on executive functions. SETTING AND DESIGN: Pure male opioid users with no considerable history of other drug abuse, undergoing methadone maintenance treatment (MMT) were recruited from a major government-run de-addiction center...
September 2016: Nigerian Journal of Clinical Practice
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