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https://www.readbyqxmd.com/read/29156310/context-and-characteristics-of-illicit-drug-use-in-coastal-and-interior-tanzania
#1
Jenny Tiberio, Yovin Ivo Laurent, Joel Ndayongeje, Amani Msami, Susie Welty, Alois Ngonyani, Syangu Mwankemwa, Moza Makumbuli, Willi McFarland, Meghan D Morris
BACKGROUND: An increase in heroin seizures in East Africa may signal wider local consumption of illicit drugs. Most information about drug use in Tanzania is from the economic capital, Dar es Salaam, and well-travelled Zanzibar. More data are needed on the extent, trends, and characteristics of illicit drug use in the vast coast and interior of the country. METHODS: The study was a rapid assessment, triangulating data from in-depth interviews of primary key informants (people who use drugs [PWUD]), secondary informants (police, community members, service providers), and ethnographic mapping of hotspots in 12 regions of Tanzania...
November 16, 2017: International Journal on Drug Policy
https://www.readbyqxmd.com/read/29154915/cocaine-and-amphetamine-regulated-transcript-peptide-and-calcium-binding-proteins-immunoreactivity-in-the-deep-layers-of-the-superior-colliculus-of-the-guinea-pig-implications-for-multisensory-and-visuomotor-processing
#2
Janusz Najdzion
The superior colliculus (SC) of mammals is a midbrain center, that can be subdivided into the superficial (SCs) and deep layers (SCd). In contrast to the visual SCs, the SCd are involved in multisensory and motor processing. This study investigated the pattern of distribution and colocalization of cocaine- and amphetamine-regulated transcript peptide (CART) and three calcium-binding proteins (CaBPs) i.e. calbindin (CB), calretinin (CR) and parvalbumin (PV) in the SCd of the guinea pig. CART labeling was seen almost exclusively in the neuropil and fibers, which differed in regard to morphology and location...
November 14, 2017: Journal of Chemical Neuroanatomy
https://www.readbyqxmd.com/read/29154786/sex-differences-in-high-fat-diet-induced-impairments-to-striatal-akt-signaling-and-enhanced-sensitivity-to-the-behavioral-effects-of-dopamine-d2-d3-receptor-agonist-quinpirole
#3
Jeremiah Ramos, Caroline Hernandez-Casner, Bryan Cruz, Katherine M Serafine
Eating a high fat laboratory chow enhances sensitivity of rats to the behavioral effects of drugs that act on dopamine systems (e.g., cocaine). Further, in male rats, eating high fat chow impairs expression of insulin signaling phosphorylated protein kinase B (pAkt), which is vital for maintaining dopamine homeostasis. Eating high fat chow enhances sensitivity of female rats to drugs that act indirectly on dopamine receptors (e.g., cocaine); however, less is known about sensitivity of females to drugs that act directly on dopamine receptors (e...
November 14, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/29154756/cocaine-induced-adaptation-of-dopamine-d2s-but-not-d2l-autoreceptors
#4
Brooks G Robinson, Alec F Condon, Daniela Radl, Emiliana Borrelli, John T Williams, Kim A Neve
The dopamine D2 receptor has two splice variants, D2S (Short) and D2L (Long). In dopamine neurons, both variants can act as autoreceptors to regulate neuronal excitability and dopamine release, but the roles of each variant are incompletely characterized. In a previous study we used viral receptor expression in D2 receptor knockout mice to show distinct effects of calcium signaling on D2S and D2L autoreceptor function (Gantz et al., 2015). However, the cocaine-induced plasticity of D2 receptor desensitization observed in wild type mice was not recapitulated with this method of receptor expression...
November 20, 2017: ELife
https://www.readbyqxmd.com/read/29152855/kinase-interest-you-in-treating-incubated-cocaine-craving-a-hypothetical-model-for-treatment-intervention-during-protracted-withdrawal-from-cocaine
#5
REVIEW
Karen K Szumlinski, Christina B Shin
A diagnostic criterion for drug addiction, persistent drug-craving continues to be the most treatment-resistant aspect of addiction that maintains the chronic, relapsing, nature of this disease. Despite the high prevalence of psychomotor stimulant addiction, there currently exists no FDA-approved medication for craving reduction. In good part, this reflects our lack of understanding of the neurobiological underpinnings of drug-craving. In humans, cue-elicited drug-craving is associated with the hyper-excitability of prefrontal cortical regions...
November 20, 2017: Genes, Brain, and Behavior
https://www.readbyqxmd.com/read/29152692/left-frontoparietal-network-activity-is-modulated-by-drug-stimuli-in-cocaine-addiction
#6
Víctor Costumero, Patricia Rosell-Negre, Juan Carlos Bustamante, Paola Fuentes-Claramonte, Juan José Llopis, Cesar Ávila, Alfonso Barrós-Loscertales
Cocaine addicts present reduced activity in the left frontoparietal network, a brain network associated with cognitive control, during the processing of non-drug reward related stimuli (Costumero et al., Addiction Biology 22:479-489, 2015). However, the involvement of this network in drug-related stimuli processing remains unclear. Here, fifteen cocaine-dependent men and fifteen healthy matched controls viewed cocaine-related, erotic, aversive, and neutral pictures during an fMRI session. Group independent component analysis was then performed to investigate how functional networks were modulated by the different emotional images...
November 20, 2017: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/29151198/high-substance-use-and-hiv-risk-behavior-among-young-argentine-men-who-have-sex-with-men
#7
Iván C Balán, Timothy Frasca, María A Pando, Rubén O Marone, Victoria Barreda, Curtis Dolezal, Alex Carballo-Diéguez, María M Ávila
In the United States young men who have sex with men have higher rates of substance use, higher HIV incidence, and less frequent HIV testing than their heterosexual counterparts and older MSM. Less is known about comparable populations in Latin America. As part of an epidemiological study, MSM were recruited through Respondent Driven Sampling in the metropolitan area of Buenos Aires, Argentina and answered a computerized behavioral survey. From the total of 500 MSM enrolled, a sub-sample of 233 aged 18-25 was analyzed...
November 18, 2017: AIDS and Behavior
https://www.readbyqxmd.com/read/29147885/proceedings-of-the-2017-isev-symposium-on-hiv-neurohiv-drug-abuse-evs
#8
Guoku Hu, Sowmya Yelamanchili, Fatah Kashanchi, Norman Haughey, Vincent C Bond, Kenneth W Witwer, Lynn Pulliam, Shilpa Buch
Despite the success of combination antiretroviral therapy (cART), there is increased prevalence of HIV-associated neurocognitive disorders (HAND) in HIV-1-infected individuals on cART, which poses a major health care challenge. Adding further complexity to this long-term antiretroviral use is the comorbidity with drugs of abuse such as morphine, cocaine, and methamphetamine, which can in turn, exacerbate neurologic and cognitive deficits associated with HAND. Furthermore, HIV proteins, such as the transactivator of transcription (Tat) and the envelope protein (gp120), as well as antiretrovirals themselves can also contribute to the progression of neurodegeneration underlying HAND...
November 16, 2017: Journal of Neurovirology
https://www.readbyqxmd.com/read/29147477/vanishing-vasculitis-a-case-of-acute-necrotic-skin-findings-without-pathologic-features-of-vasculitis-from-adulterated-cocaine
#9
Adnan Asif Parvez Ghias, Patrick Brine
While the usage of illicit drugs in itself carries significant health risks and associated toxicities, drugs that are adulterated to give them volume, alter their psychogenic properties, and make them cheaper to produce are to be considered even more dangerous. Cocaine is one of them, and it is now most commonly being adulterated with levamisole. We report a case of a 37-year-old female with the chief complaint of painful skin lesions and wounds on both of her upper and lower extremities for three weeks duration...
2017: Journal of Community Hospital Internal Medicine Perspectives
https://www.readbyqxmd.com/read/29146410/cart-neurons-in-the-arcuate-nucleus-and-lateral-hypothalamic-area-exert-differential-controls-on-energy-homeostasis
#10
Jackie Lau, Aitak Farzi, Yue Qi, Regine Heilbronn, Mario Mietzsch, Yan-Chuan Shi, Herbert Herzog
OBJECTIVE: The cocaine- and amphetamine-regulated transcript (CART) codes for a pivotal neuropeptide important in the control of appetite and energy homeostasis. However, limited understanding exists for the defined effector sites underlying CART function, as discrepant effects of central CART administration have been reported. METHODS: By combining Cart-cre knock-in mice with a Cart adeno-associated viral vector designed using the flip-excision switch (AAV-FLEX) technology, specific reintroduction or overexpression of CART selectively in CART neurons in the arcuate nucleus (Arc) and lateral hypothalamic area (LHA), respectively, was achieved...
November 8, 2017: Molecular Metabolism
https://www.readbyqxmd.com/read/29143945/one-evidence-of-cocaine-and-amphetamine-regulated-transcript-cart-has-the-bidirectional-effects-on-appetite-in-siberian-sturgeon-acipenser-baerii
#11
Xin Zhang, Yundi Gao, Ni Tang, Jinwen Qi, Yuanbing Wu, Jin Hao, Shuyao Wang, Defang Chen, Zhiqiong Li
Cocaine- and amphetamine-regulated transcript (CART), discovered in 1995, with various biological functions, has received much attention recently due to its role in the regulation of appetite in mammals. However, the function of CART on the appetite control in fish species is still not very clear. In this study, Siberian sturgeon (Acipenser baerii Brandt) cart gene was cloned for the first time, and the cart mRNA levels in 11 feeding-related tissues was investigated. The Siberian sturgeon cart gene sequence was 1459 base pairs (bp), including a 3'-terminal untranslated region (3'-UTR) of 39 bp, a 5'-terminal untranslated region (5'-UTR) of 52 bp, and an open reading frame (ORF) of 348 bp encoding 115 amino acids...
November 16, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/29142909/transgender-women-s-drug-use-in-the-dominican-republic
#12
Henna Budhwani, Kristine R Hearld, Adrienne N Milner, Elaine McGlaughlin, Rebecca Charow, Rosa Mayra Rodriguez-Lauzurique, Santo Rosario, Robert Paulino-Ramirez
Purpose: Studies on drug use in transgender populations, particularly those in resource-limited settings, are scarce. Considering that drug use can be a coping mechanism to deal with stigma and traumatic experiences, we examined associations between stigma, trauma, and drug use in a national sample of transgender women from the Dominican Republic. Methods: Bivariate analyses examined differences between drug users and abstainers (n=287). Multivariate analyses reported odds ratios (OR) with general drug, marijuana, and cocaine use as outcomes (n=243)...
2017: Transgender Health
https://www.readbyqxmd.com/read/29142291/resveratrol-modulates-cocaine-induced-inhibitory-synaptic-plasticity-in-vta-dopamine-neurons-by-inhibiting-phosphodiesterases-pdes
#13
Yan Li, Laikang Yu, Li Zhao, Fanxing Zeng, Qing-Song Liu
Resveratrol is a natural phytoalexin synthesized by plants, including grapes. It displays a wide range of neuroprotective benefits associated with anti-aging. Recent studies have shown that resveratrol regulates dopaminergic transmission and behavioral effects of drugs of abuse. The goal of the present study is to investigate whether and how resveratrol alters basal inhibitory synaptic transmission and cocaine-induced inhibitory synaptic plasticity in dopamine neurons of the ventral tegmental area (VTA). We report that resveratrol elevated cAMP levels by itself and further potentiated a forskolin-induced increase in cAMP levels in midbrain slices, consistent with reported effects of inhibition of phosphodiesterases (PDEs)...
November 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29140478/comparison-of-cocaine-crack-biomarkers-concentrations-in-oral-fluid-urine-and-plasma-simultaneously-collected-from-drug-users
#14
Taís Regina Fiorentin, Juliana Nichterwitz Scherer, Marcelo Caetano Alexandre Marcelo, Tanara Rosângela Vieira Sousa, Flavio Pechansky, Marco Flôres Ferrão, Renata Pereira Limberger
The use of oral fluid (OF) as an alternative specimen for drug analysis has become very popular in forensic toxicology. Many clinical studies have evaluated the correlations between concentrations of cocaine and its metabolites in OF and other matrices, but results have shown high variability. In addition, there are no data available regarding the correlations between biomarkers of crack-cocaine use in different matrices. This study evaluated the relationship between concentrations of cocaine/crack-cocaine biomarkers in OF, urine and plasma samples collected from cocaine users...
November 13, 2017: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/29139537/planaria-an-animal-model-that-integrates-development-regeneration-and-pharmacology
#15
Oné R Pagán
Although planarians are established model organisms in developmental biology and regeneration studies, in the last forty years or so, they have caught the attention of pharmacologists, especially to study the pharmacology of drugs of abuse. This review covers the following topics: some fundamentals of the history of animal models and planarians in biomedical research; an abbreviated story of systematic pharmacology research using planarians as a model organism; an example of how planarians are contributing to the search for compounds against acute cocaine toxicity; an analysis of the number of papers on planarians and pharmacological topics from 1900-2016; some perspectives on pharmacology in developmental and regeneration studies, arguing in favor of the planarian model as a leading subject for this interdisciplinary area of research, and finally some concluding thoughts...
2017: International Journal of Developmental Biology
https://www.readbyqxmd.com/read/29139213/heterogeneous-neuronal-activity-in-the-lateral-habenula-after-short-and-long-term-cocaine-self-administration-in-rats
#16
Ping Gao, Henk J Groenewegen, Louk J M J Vanderschuren, Pieter Voorn
Cocaine addiction is thought to be the result of drug-induced functional changes in a neural network implicated in emotions, learning, and cognitive control. Recent studies have implicated the lateral habenula (LHb) in drug-directed behavior, especially its aversive aspects. Limited cocaine exposure has been shown to alter neuronal activity in the LHb, but the impact of long-term drug exposure on habenula function has not been determined. Therefore, using c-fos as a marker, we here examined neuronal activity in LHb in rats that self-administered cocaine for either 10 or 60 days...
November 15, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/29137703/fabrication-of-a-novel-aptasensor-based-on-three-dimensional-reduced-graphene-oxide-polyaniline-gold-nanoparticle-composite-as-a-novel-platform-for-high-sensitive-and-specific-cocaine-detection
#17
Pegah Hashemi, Hasan Bagheri, Abbas Afkhami, Yalda Hosseinzadeh Ardakani, Tayyebeh Madrakian
In the present research, we have developed a novel label free aptasensor based on screen printed carbon electrode (SPCE) modified with three-dimensional magnetic reduced graphene oxide(3D-MRGO)/polyaniline(PA)/gold nanoparticle(AuNP) nanocomposite for impedimetric determination of cocaine. To achieve this goal, a specific thiolated cocaine aptamer was immobilized onto the surface of synthesized nanocomposite. The signaling mechanism of the proposed aptasensor was based on increase in the [Fe(CN)6](3-/4-) charge transfer resistance (RCT) as an electrochemical probe in the presence of target analyte...
December 15, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/29136565/attentional-bias-toward-alcohol-stimuli-as-a-predictor-of-treatment-retention-in-cocaine-dependence-and-alcohol-user-patients
#18
Carmen Díaz-Batanero, Sara Domínguez-Salas, Enrique Moraleda, Fermín Fernández-Calderón, Oscar M Lozano
BACKGROUND: Attentional bias towards substance-related stimuli has shown to be involved in the development and maintenance of cocaine dependence. The relationship between alcohol use and cocaine dependence shown in literature justify the need of study these two substances jointly. METHODS: This paper analyzes patterns of attentional bias in 71 patients with cocaine dependence and compares these patterns according to whether occasional or problematic concurrent alcohol use is taken into account...
November 6, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/29135549/a-dopeless-diamond-belied-koca-nola-s-cocaine-laced-content
#19
(no author information available yet)
No abstract text is available yet for this article.
December 2017: Anesthesiology
https://www.readbyqxmd.com/read/29134962/role-of-glutamatergic-projections-from-the-ventral-ca1-to-infralimbic-cortex-in-context-induced-reinstatement-of-heroin-seeking
#20
Na Wang, Feifei Ge, Cailian Cui, Yijing Li, Xiaowei Sun, Linlin Sun, Xinjuan Wang, Shuli Liu, Haolin Zhang, Yan Liu, Meng Jia, Mingda Yang
The prelimbic cortex (PL) and infralimbic cortex (IL) play a role in context-induced reinstatement of heroin seeking in an animal model of drug relapse. Both the PL and IL receive direct glutamatergic projections from the ventral CA1 (vCA1), which is also involved in context-induced reinstatement of cocaine and heroin seeking. Here we studied the role of vCA1-PL and vCA1-IL projections in context-induced reinstatement of heroin seeking by using electrophysiological, neuropharmacological, chemogenetic and molecular methods...
November 14, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
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