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https://www.readbyqxmd.com/read/27933645/aflatoxin-biomarkers-in-hair-may-facilitate-long-term-exposure-studies
#1
Innocent Mupunga, Christo D Izaaks, Leshweni J Shai, David R Katerere
Aflatoxins are highly toxic fungal metabolites produced by some members of the Aspergillus species. They are low molecular weight lipophilic compounds that are easily absorbed from the gastrointestinal tract. They contaminate most staple foods, including maize, peanuts, peanut butter and sorghum mainly in the tropics where hot and humid conditions promote fungal growth. Absorbed aflatoxins are metabolized by the cytochrome P450 enzyme system in the liver into toxic metabolites. Aflatoxin B (AFB)1 is the most toxic, carcinogenic and mutagenic naturally occurring toxin...
December 9, 2016: Journal of Applied Toxicology: JAT
https://www.readbyqxmd.com/read/27933543/integrative-analysis-of-genetic-genomic-and-phenotypic-data-for-ethanol-behaviors-a-network-based-pipeline-for-identifying-mechanisms-and-potential-drug-targets
#2
James W Bogenpohl, Kristin M Mignogna, Maren L Smith, Michael F Miles
Complex behavioral traits, such as alcohol abuse, are caused by an interplay of genetic and environmental factors, producing deleterious functional adaptations in the central nervous system. The long-term behavioral consequences of such changes are of substantial cost to both the individual and society. Substantial progress has been made in the last two decades in understanding elements of brain mechanisms underlying responses to ethanol in animal models and risk factors for alcohol use disorder (AUD) in humans...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27933461/factors-associated-with-hiv-testing-among-participants-from-substance-use-disorder-treatment-programs-in-the-us-a-machine-learning-approach
#3
Yue Pan, Hongmei Liu, Lisa R Metsch, Daniel J Feaster
HIV testing is the foundation for consolidated HIV treatment and prevention. In this study, we aim to discover the most relevant variables for predicting HIV testing uptake among substance users in substance use disorder treatment programs by applying random forest (RF), a robust multivariate statistical learning method. We also provide a descriptive introduction to this method for those who are unfamiliar with it. We used data from the National Institute on Drug Abuse Clinical Trials Network HIV testing and counseling study (CTN-0032)...
December 8, 2016: AIDS and Behavior
https://www.readbyqxmd.com/read/27931777/effects-of-maternal-separation-on-nicotine-induced-conditioned-place-preference-and-subsequent-learning-and-memory-in-adolescent-female-rats
#4
Fatemeh Delavari, Nouzar Nakhaee, Khadijeh Esmaeilpour, Saeid Esmaeili Mahani, Vahid Sheibani
Adverse early life experiences can potentially increase risk for drug abuse later in life. However, little research has been conducted studying the effects of maternal separation (MS), an experimental model for early life stress, on the rewarding effects of nicotine. Cognitive function may be affected by MS. So, we also investigated whether nicotine administration affect spatial learning and memory in MS adolescent female rats. Rat pups were subjected to daily MS for 15min (MS15) or 180min (MS180) during the first 2 weeks of life or reared under normal animal facility rearing (AFR) conditions...
December 5, 2016: Neuroscience Letters
https://www.readbyqxmd.com/read/27930896/can-anxiety-tested-in-the-elevated-plus-maze-be-related-to-nociception-sensitivity-in-adult-male-rats
#5
Marie Pometlová, Anna Yamamotová, Kateryna Nohejlová, Romana Šlamberová
Methamphetamine (MA) is one of the most addictive psychostimulant drugs with a high potential for abuse. Our previous studies demonstrated that MA administered to pregnant rats increases pain sensitivity and anxiety in their adult offspring and makes them more sensitive to acute administration of the same drug in adulthood. Because individuals can differ considerably in terms of behaviour and physiology, such as rats that do not belong in some characteristics (e.g. anxiety) to average, can be described as low-responders or high-responders, are then more or less sensitive to pain...
2016: Prague Medical Report
https://www.readbyqxmd.com/read/27929684/acute-effects-of-snus-in-never-tobacco-users-a-pilot-study
#6
Jenny E Ozga, Nicholas J Felicione, Daniel Elswick, Melissa D Blank
BACKGROUND: Snus tobacco characteristics may attract non-tobacco users, including relatively low, but pharmacologically active, doses of nicotine. Lower nicotine doses may limit adverse drug effects while also producing a physiologically active response. OBJECTIVES: This pilot study is the first to profile the acute effects of snus on physiological and subjective assessments in a sample of never-tobacco users. METHODS: Eleven never-tobacco users (five women; <100 uses/lifetime) were recruited from the community via university-approved advertisements...
December 8, 2016: American Journal of Drug and Alcohol Abuse
https://www.readbyqxmd.com/read/27929656/epilogue-to-the-special-issue-on-co-occurrence-of-substance-use-and-tobacco
#7
Steven A Schroeder
This paper summarizes The American Journal of Drug and Alcohol Abuse special issue and offers suggestions for future steps. People who use alcohol or other addictive substances are much more likely to use tobacco. Yet, clinicians and scientists have long regarded these addiction categories as separate and unrelated. The resultant benign neglect of tobacco use has had disastrous consequences on patients. This special issue is an important step toward remedying that situation. It has reviewed what is known and what more needs to be discovered regarding the co-occurrence of tobacco use disorder (TUD) and other substance use disorders (SUDs)...
December 8, 2016: American Journal of Drug and Alcohol Abuse
https://www.readbyqxmd.com/read/27929348/shallow-discounting-of-delayed-cocaine-by-male-rhesus-monkeys-when-immediate-food-is-the-choice-alternative
#8
Sally L Huskinson, Joel Myerson, Leonard Green, James K Rowlett, William L Woolverton, Kevin B Freeman
Huskinson et al. (2015) recently examined delay discounting in monkeys choosing between an immediate drug (cocaine) reinforcer and a delayed nondrug (food) reinforcer. The present experiment examined the reverse situation: choice between immediate nondrug (food) and delayed drug (cocaine) reinforcers. Whereas the former choice situation exemplifies drug abuse from a delay-discounting perspective, our interest in the latter choice situation is derived from the observation that drug abusers, who characteristically are associated with impulsive choice, typically must devote considerable time to procuring drugs, often at the expense of immediate nondrug alternatives...
December 2016: Experimental and Clinical Psychopharmacology
https://www.readbyqxmd.com/read/27928715/the-impaired-anesthesiologist-what-you-should-know-about-substance-abuse
#9
Stefan T Samuelson, Ethan O Bryson
PURPOSE: Despite our considerable experience with the problem of addiction in our specialty, most anesthesia care providers don't know how to identify or help an impaired colleague. The purpose of this article to provide sufficient information on substance use disorder (SUD) to aid in its identification amongst colleagues and to assist in its management. PRINCIPAL FINDINGS: Depending on the region, 10-15% of the general population is prone to developing a SUD and will abuse drugs or alcohol at some point in their life...
December 7, 2016: Canadian Journal of Anaesthesia, Journal Canadien D'anesthésie
https://www.readbyqxmd.com/read/27928551/drug-discrimination-and-the-analysis-of-private-events
#10
Brian D Kangas, David R Maguire
A defining feature of radical behaviorism is the explicit inclusion of private events as material phenomena within a science of behavior. Surprisingly, however, despite much theorizing, there is a notable paucity within behavior analysis of controlled experimentation and analysis of private events, especially in nonhuman animals. One technique that is amenable to the study of private events is drug discrimination. For over 40 years, drug discrimination procedures have been an incredibly effective tool providing a wealth of in vivo pharmacological information about drugs including receptor selectivity, potency, and efficacy...
November 2016: Behav Anal (Wash D C)
https://www.readbyqxmd.com/read/27927933/disparities-and-guideline-adherence-in-drugs-of-abuse-screening-in-intracerebral-hemorrhage
#11
Laura M Tormoehlen, Ashley D Blatsioris, Elizabeth A S Moser, Ravan J L Carter, Alec Stevenson, Susan Ofner, Abigail L Hulin, Darren P O'Neill, Aaron A Cohen-Gadol, Thomas J Leipzig, Linda S Williams, Jason Mackey
OBJECTIVE: To characterize the pattern of urine drug screening in a cohort of intracerebral hemorrhage (ICH) patients at our academic centers. METHODS: We identified cases of primary ICH occurring from 2009 to 2011 in our academic centers. Demographic data, imaging characteristics, processes of care, and short-term outcomes were ascertained. We performed logistic regression to identify predictors for screening and evaluated preguideline and postguideline reiteration screening patterns...
December 7, 2016: Neurology
https://www.readbyqxmd.com/read/27924364/metabolic-characterization-of-1-5-fluoropentyl-1h-indol-3-yl-4-methyl-1-naphthalenyl-methanone-mam-2201-using-human-liver-microsomes-and-cdna-overexpressed-cytochrome-p450-enzymes
#12
Tae Yeon Kong, Ju-Hyun Kim, Won Gu Choi, Joo Young Lee, Hee Seung Kim, Jin Young Kim, Moon Kyo In, Hye Suk Lee
MAM-2201 is a synthetic cannabinoid that is increasingly found in recreational drug abusers and cases of severe intoxication. Thus, characterization of the metabolic pathways of MAM-2201 is necessary to predict individual pharmacokinetics and toxicity differences, and to avoid toxic drug-drug interactions. Collectively, 19 phase 1 metabolites of MAM-2201 were identified using liquid chromatography-Orbitrap mass spectrometry following human liver microsomal incubations in the presence of NADPH: 7 hydroxy-MAM-2201 (M1-M7), 4 dihydroxy-MAM-2201 (M8-M11), dihydrodiol-MAM-2201 (M12), N-(5-hydroxypentyl)-MAM-2201 (M13), hydroxy-M13 (M14), N-dealkyl-MAM-2201 (M15), 2 hydroxy-M15 (M16, M17), MAM-2201 N-pentanoic acid (M18), and hydroxy-M18 (M19)...
December 6, 2016: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/27924173/predictors-of-recurrent-hospital-admission-for-patients-presenting-with-diabetic-ketoacidosis-and-hyperglycemic-hyperosmolar-state
#13
Annabel L Bradford, Courtney Champagne Crider, Xizheng Xu, Syed Hasan Naqvi
BACKGROUND: Diabetic ketoacidosis (DKA) and hyperglycemic hyperosmolar state (HHS) are two serious, preventable complications of diabetes mellitus. Analysis of variables associated with recurrent DKA and HHS admission has the potential to improve patient outcomes by identifying possible areas for intervention. The aim of this study was to evaluate potential predictors of recurrent DKA or HHS admission. METHODS: This was a retrospective case-control study of 367 patients presenting during a 5-year period with DKA or HHS at a US tertiary academic medical center...
January 2017: Journal of Clinical Medicine Research
https://www.readbyqxmd.com/read/27923259/-established-therapies-and-new-therapeutic-strategies-in-alcoholic-liver-disease
#14
Helmut Karl Seitz, Sebastian Mueller
Chronical alcohol abuse causes more than 200 diseases and/or symptoms and among these alcoholic liver disease (ALD) is of special importance since it occurs frequently and may be life-threatening. In Europe alcohol consumption as well as ALD increased as compared to the rest of the world. It has been estimated that in Europe approximately 500 000 people die every year due to ALD. ALD consists of alcoholic fatty liver, alcoholic steatohepatitis (ASH), alcoholic cirrhosis and hepatocellar cancer (HCC ). Alcohol hepatitis (AH) is a clinical feature with jaundice and liver failure and a high mortality...
December 6, 2016: Zeitschrift Für Gastroenterologie
https://www.readbyqxmd.com/read/27922639/mesolimbic-leptin-signaling-negatively-regulates-cocaine-conditioned-reward
#15
M Shen, C Jiang, P Liu, F Wang, L Ma
The regulatory mechanisms underlying the response to addictive drugs are complex, and increasing evidence indicates that there is a role for appetite-regulating pathways in substance abuse. Leptin, an important adipose hormone that regulates energy balance and appetite, exerts its physiological functions via leptin receptors. However, the role of leptin signaling in regulating the response to cocaine remains unclear. Here we examined the potential role of leptin signaling in cocaine reward using a conditioned place preference (CPP) procedure...
December 6, 2016: Translational Psychiatry
https://www.readbyqxmd.com/read/27921140/cocaine-administration-dose-dependently-increases-sexual-desire-and-decreases-condom-use-likelihood-the-role-of-delay-and-probability-discounting-in-connecting-cocaine-with-hiv
#16
Matthew W Johnson, Evan S Herrmann, Mary M Sweeney, Robert S LeComte, Patrick S Johnson
OBJECTIVES: Although cocaine use has been linked to sexual HIV risk behavior for decades, the direct effects of cocaine on sexual desire and sexual decision-making are unexamined. Research suggests delay discounting (devaluation of future outcomes) and probability discounting (devaluation of uncertain outcomes) play roles in condom use decisions. This study examined the effect of cocaine administration on sexual desire, hypothetical condom use, and discounting tasks. METHODS: This double-blind, within-subjects study compared the effects of 0, 125, and 250 mg/70 kg oral cocaine HCl in 12 cocaine users...
December 5, 2016: Psychopharmacology
https://www.readbyqxmd.com/read/27919403/trace-amine-associated-receptor-1-agonists-as-narcolepsy-therapeutics
#17
Sarah W Black, Michael D Schwartz, Tsui-Ming Chen, Marius C Hoener, Thomas S Kilduff
BACKGROUND: Narcolepsy, a disorder of rapid eye movement (REM) sleep, is characterized by excessive daytime sleepiness and cataplexy, a loss of muscle tone triggered by emotional stimulation. Current narcolepsy pharmacotherapeutics include controlled substances with abuse potential or drugs with undesirable side effects. As partial agonists at trace amine-associated receptor 1 (TAAR1) promote wakefulness in mice and rats, we evaluated whether TAAR1 agonism had beneficial effects in two mouse models of narcolepsy...
October 18, 2016: Biological Psychiatry
https://www.readbyqxmd.com/read/27918316/cognitive-impairment-and-tramadol-dependence
#18
Medhat M Bassiony, Usama M Youssef, Mervat S Hassan, Ghada M Salah El-Deen, Hayam El-Gohari, Mohamed Abdelghani, Ahmed Abdalla, Dalia H Ibrahim
BACKGROUND AND OBJECTIVE: Cognitive impairment is one of the consequences of substance abuse. Tramadol abuse is a public health problem in Egypt. The objective of this study was to estimate the prevalence and correlates of cognitive impairment among tramadol-abuse patients and control subjects. METHODS: This study included 100 patients with tramadol abuse and 100 control subjects (matched for age, sex, and education) who were recruited from Zagazig University Hospital, Egypt...
December 1, 2016: Journal of Clinical Psychopharmacology
https://www.readbyqxmd.com/read/27918243/the-neuroimmune-transcriptome-and-alcohol-dependence-potential-for-targeted-therapies
#19
Anna Warden, Emma Erickson, Gizelle Robinson, R Adron Harris, R Dayne Mayfield
Transcriptome profiling enables discovery of gene networks that are altered in alcoholic brains. This technique has revealed involvement of the brain's neuroimmune system in regulating alcohol abuse and dependence, and has provided potential therapeutic targets. In this review, we discuss Toll-like-receptor pathways, hypothesized to be key players in many stages of the alcohol addiction cycle. The growing appreciation of the neuroimmune system's involvement in alcoholism has also led to consideration of crucial roles for glial cells, including astrocytes and microglia, in the brain's response to alcohol abuse...
December 5, 2016: Pharmacogenomics
https://www.readbyqxmd.com/read/27917738/incidence-and-factors-associated-with-emergency-department-visits-for-recurrent-skin-and-soft-tissue-infections-in-patients-in-california-2005-2011
#20
L May, E Y Klein, E M Martinez, N Mojica, L G Miller
More than 2 million visits for skin and soft tissue infections (SSTIs) are seen in US emergency departments (EDs) yearly. Up to 50% of patients with SSTIs, suffer from recurrences, but associated factors remain poorly understood. We performed a retrospective study of patients with primary diagnosis of SSTI between 2005 and 2011 using California ED discharge data from the State Emergency Department Databases and State Inpatient Databases. Using a multivariable logistic regression, we examined factors associated with a repeat SSTI ED visits up to 6 months after the initial SSTI...
December 5, 2016: Epidemiology and Infection
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