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Protracted Withdrawal

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https://www.readbyqxmd.com/read/29109058/homer2-within-the-central-nucleus-of-the-amygdala-modulates-withdrawal-induced-anxiety-in-a-mouse-model-of-binge-drinking
#1
K M Lee, M A Coelho, K R Sern, K K Szumlinski
A history of binge-drinking decreases protein expression of the glutamate-related scaffolding protein Homer2 within the central nucleus of the amygdala (CEA), coinciding with behavioral signs of negative affect. To assess the functional relevance of this protein change for withdrawal-induced hyper-anxiety, adult (PND 56) and adolescent (PND 28) male C57BL/6J mice were administered an intra-CEA infusion of an adeno-associated viral vector (AAV) carrying either cDNA to express Homer2 (H2-cDNA) or GFP as control...
November 3, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/29095288/severe-enteropathy-with-villous-atrophy-in-prolonged-mefenamic-acid-users-a-currently-under-recognized-in-previously-well-recognized-complication-case-report-and-review-of-literature
#2
REVIEW
Uayporn Kaosombatwattana, Julajak Limsrivilai, Ananya Pongpaibul, Monthira Maneerattanaporn, Phunchai Charatcharoenwitthaya
RATIONALE: Mefenamic acid-induced enteropathy may be an under-recognized condition because few reported cases and no review of literature to comprehensively describe all reported cases exist. From inception until February 2017, a systematic literature search identified twenty original reports of cases of mefenamic acid-induced enteropathy. Additional five cases were identified at our hospital. All cases were included in the analyses. PATIENT CONCERNS: Most patients had been regularly taking therapeutic dosages of mefenamic acid for at least three months before symptoms developed...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29061508/endogenous-glutamate-within-the-prelimbic-and-infralimbic-cortices-regulates-the-incubation-of-cocaine-seeking-in-rats
#3
Christina B Shin, Taylor J Templeton, Alvin S Chiu, Jennifer Kim, Ellen S Gable, Philip A Vieira, Tod E Kippin, Karen K Szumlinski
The incubation of cue-reinforced cocaine-seeking coincides with increased extracellular glutamate within the ventromedial prefrontal cortex (vmPFC). The vmPFC is comprised of two subregions that oppositely regulate drug-seeking, with infralimbic (IL) activity inhibiting, and prelimibic (PL) activity facilitating, drug-seeking. Thus, we hypothesized that increasing and decreasing endogenous glutamate within the IL would attenuate and potentiate, respectively, cue-reinforced drug-seeking behavior, with the converse effects observed upon manipulations of endogenous glutamate within the PL...
October 20, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28986608/opiate-dependence-induces-cell-type-specific-plasticity-of-intrinsic-membrane-properties-in-the-rat-juxtacapsular-bed-nucleus-of-stria-terminalis-jcbnst
#4
Walter Francesconi, Attila Szücs, Fulvia Berton, George F Koob, Leandro F Vendruscolo, Pietro Paolo Sanna
RATIONALE: Drugs of abuse can alter circuit dynamics by modifying synaptic efficacy and/or the intrinsic membrane properties of neurons. The juxtacapsular subdivision of the bed nucleus of stria terminalis (jcBNST) has unique connectivity that positions it to integrate cortical and amygdala inputs and provide feed-forward inhibition to the central nucleus of the amygdala (CeA), among other regions. In this study, we investigated changes in the synaptic and intrinsic properties of neurons in the rat jcBNST during protracted withdrawal from morphine dependence using a combination of conventional electrophysiological methods and the dynamic clamp technique...
October 6, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28986279/progressive-modulation-of-accumbal-neurotransmission-and-anxiety-like-behavior-following-protracted-nicotine-withdrawal
#5
Julia Morud, Joakim Strandberg, Anna Andrén, Mia Ericson, Bo Söderpalm, Louise Adermark
Due to the highly addictive properties of nicotine, a low percentage of users successfully maintain cessation for longer periods of time. This might be linked to neuroadaptations elicited by the drug, and understanding progressive changes in neuronal function might provide critical insight into nicotine addiction. We have previously shown that neurotransmission in the nucleus accumbens (nAc), a key brain region with respect to drug reinforcement and relapse, is suppressed for as long as seven months after a brief period of nicotine treatment...
October 3, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28919080/regulation-of-glutamate-transporter-1-glt-1-gene-expression-by-cocaine-self-administration-and-withdrawal
#6
Ronald Kim, Marian T Sepulveda-Orengo, Kati L Healey, Emily A Williams, Kathryn J Reissner
Downregulation of the astroglial glutamate transporter GLT-1 is observed in the nucleus accumbens (NAc) following administration of multiple drugs of abuse. The decrease in GLT-1 protein expression following cocaine self-administration is dependent on both the amount of cocaine self-administered and the length of withdrawal, with longer access to cocaine and longer withdrawal periods leading to greater decreases in GLT-1 protein. However, the mechanism(s) by which cocaine downregulates GLT-1 protein remains unknown...
September 14, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28891380/stories-of-hell-and-healing-internet-users-construction-of-benzodiazepine-distress-and-withdrawal
#7
Alison M Fixsen, Damien Ridge
Benzodiazepines are a group of drugs used mainly as sedatives, hypnotics, antiepileptics, and muscle relaxants. Consumption is recommended for 2 to 4 weeks only, due to fast onset of dependency and potentially distressing withdrawal symptoms. Few peer-review studies have drawn on the user experiences and language to appreciate firsthand experiences of benzodiazepine withdrawal or discontinuation syndrome. We looked extensively at patient stories of benzodiazepine withdrawal and recovery on Internet support sites and YouTube...
September 1, 2017: Qualitative Health Research
https://www.readbyqxmd.com/read/28833238/crf1-receptor-dependent-increases-in-irritability-like-behavior-during-abstinence-from-chronic-intermittent-ethanol-vapor-exposure
#8
Adam Kimbrough, Giordano de Guglielmo, Jenni Kononoff, Marsida Kallupi, Eric P Zorrilla, Olivier George
BACKGROUND: In humans, emotional and physical signs of withdrawal from ethanol are commonly seen. Many of these symptoms, including anxiety-like and depression-like behavior, have been characterized in animal models of ethanol dependence. One issue with several current behavioral tests that measure withdrawal in animal models is that they are often not repeatable within subjects over time. Additionally, irritability, one of the most common symptoms of ethanol withdrawal in humans, has not been well characterized in animal models...
November 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/28748375/attenuation-of-ethanol-abstinence-induced-anxiety-and-depressive-like-behavior-by-the-phosphodiesterase-4-inhibitor-rolipram-in-rodents
#9
Mei-Fang Gong, Rui-Ting Wen, Ying Xu, Jian-Chun Pan, Ning Fei, Yan-Meng Zhou, Jiang-Ping Xu, Jian-Hui Liang, Han-Ting Zhang
RATIONALE: Withdrawal symptoms stand as a core feature of alcohol dependence. Our previous results have shown that inhibition of phosphodiesterase-4 (PDE4) decreased ethanol seeking and drinking in alcohol-preferring rodents. However, little is known about whether PDE4 is involved in ethanol abstinence-related behavior. OBJECTIVE: The objective of this study was to characterize the role of PDE4 in the development of anxiety- and depressive-like behavior induced by abstinence from ethanol exposure in different animal models...
October 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28729845/negative-affect-and-excessive-alcohol-intake-incubate-during-protracted-withdrawal-from-binge-drinking-in-adolescent-but-not-adult-mice
#10
Kaziya M Lee, Michal A Coehlo, Noah R Solton, Karen K Szumlinski
Binge-drinking is common in underage alcohol users, yet we know little regarding the biopsychological impact of binge-drinking during early periods of development. Prior work indicated that adolescent male C57BL6/J mice with a 2-week history of binge-drinking (PND28-41) are resilient to the anxiogenic effects of early alcohol withdrawal. Herein, we employed a comparable Drinking-in-the-Dark model to determine how a prior history of binge-drinking during adolescence (EtOH(adolescents)) influences emotionality (assayed with the light-dark box, marble burying test, and the forced swim test) and the propensity to consume alcohol in later life, compared to animals without prior drinking experience...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28716996/long-term-benzodiazepine-and-z-drugs-use-in-the-uk-a-survey-of-general-practice
#11
James Davies, Todd C Rae, Luke Montagu
BACKGROUND: Current British National Formulary (BNF) guidelines state that benzodiazepines and zolpidem, zopiclone, and zaleplon, commonly known as Z-drugs (BZD), be prescribed for no more than 4 weeks, although anecdotal data suggest that many patients are prescribed BZDs for much longer. As there are no recent, evidence-based estimates of long-term (>12 months) BZD use in the UK, the scale of this potential problem is unknown. AIM: To produce the first reliable, evidence-based estimate of long-term BZD use in the UK...
September 2017: British Journal of General Practice: the Journal of the Royal College of General Practitioners
https://www.readbyqxmd.com/read/28647675/abstinence-from-prolonged-ethanol-exposure-affects-plasma-corticosterone-glucocorticoid-receptor-signaling-and-stress-related-behaviors
#12
Sucharita S Somkuwar, Leandro F Vendruscolo, McKenzie J Fannon, Brooke E Schmeichel, Tran Bao Nguyen, Jasmin Guevara, Harpreet Sidhu, Candice Contet, Eric P Zorrilla, Chitra D Mandyam
Alcohol dependence is linked to dysregulation of the hypothalamic-pituitary-adrenal axis. Here, we investigated effects of repeated ethanol intoxication-withdrawal cycles (using chronic intermittent ethanol vapor inhalation; CIE) and abstinence from CIE on peak and nadir plasma corticosterone (CORT) levels. Irritability- and anxiety-like behaviors as well as glucocorticoid receptors (GR) in the medial prefrontal cortex (mPFC) were assessed at various intervals (2h-28d) after cessation of CIE. Results show that peak CORT increased during CIE, transiently decreased during early abstinence (1-11d), and returned to pre-abstinence levels during protracted abstinence (17-27d)...
October 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28574864/methadone-management-of-withdrawal-associated-with-loperamide-related-opioid-use-disorder
#13
Raphael J Leo, Muhammad A Ghazi, Kelly S Jaziri
: Loperamide hydrochloride is an over-the-counter anti-diarrheal agent, acting via mu-opioid receptor agonist effects in the intestinal myenteric plexus. Although preclinical investigations suggested that abuse liability associated with loperamide use is low, there are increasing numbers of cases reported to the US Food and Drug Administration, of abuse, dependence, and withdrawal associated with loperamide use. A case of a patient with opioid use disorder, that is, in the form of protracted loperamide excess use, requiring management of withdrawal with methadone is presented...
September 2017: Journal of Addiction Medicine
https://www.readbyqxmd.com/read/28561904/neonatal-abstinence-syndrome-neurobehavior-at-6-weeks-of-age-in-infants-with-or-without-pharmacological-treatment-for-withdrawal
#14
Nicole A Heller, Beth A Logan, Deborah G Morrison, Jonathan A Paul, Mark S Brown, Marie J Hayes
Use and abuse of prescription opioids and concomitant increase in Neonatal Abstinence Syndrome (NAS), a condition that may lead to protracted pharmacological treatment in more than 60% of infants, has tripled since 2000. This study assessed neurobehavioral development using the NICU Network Neurobehavioral Scale in 6-week old infants with prenatal methadone exposure who did (NAS+; n = 23) or did not (NAS-; n = 16) require pharmacological treatment for NAS severity determined by Finnegan Scale. An unexposed, demographically similar group of infants matched for age served as comparison (COMP; n = 21)...
July 2017: Developmental Psychobiology
https://www.readbyqxmd.com/read/28492457/the-role-of-amantadine-withdrawal-in-3-cases-of-treatment-refractory-altered-mental-status
#15
Leah D Fryml, Kristen R Williams, Christopher G Pelic, James Fox, Gregory Sahlem, Sophie Robert, Gonzalo J Revuelta, Edward Baron Short
Amantadine, which was originally developed as an antiviral medication, functions as a dopamine agonist in the central nervous system and consequently is utilized in the treatment of Parkinson disease, drug-induced extrapyramidal reactions, and neuroleptic malignant syndrome. For reasons that are not entirely understood, abrupt changes in amantadine dosage can produce a severe withdrawal syndrome. Existing medical literature describes case reports of amantadine withdrawal leading to delirium, which at times has progressed to neuroleptic malignant syndrome...
May 2017: Journal of Psychiatric Practice
https://www.readbyqxmd.com/read/28454983/emerging-pharmacotherapies-for-alcohol-use-disorder
#16
REVIEW
Barbara J Mason
The identification of different stages within the alcohol use disorder (AUD) cycle that are linked to neurocircuitry changes in pathophysiology associated with the negative emotional states of abstinence has provided a view of medication development for AUD that emphasizes changes in the brain reward and stress systems. Alcohol use disorder can be defined as a chronic relapsing disorder that involves compulsive alcohol seeking and taking, loss of control over alcohol intake, and emergence of a negative emotional state during abstinence...
August 1, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28445527/enhanced-functional-connectivity-and-volume-between-cognitive-and-reward-centers-of-na%C3%A3-ve-rodent-brain-produced-by-pro-dopaminergic-agent-kb220z
#17
Marcelo Febo, Kenneth Blum, Rajendra D Badgaiyan, Pablo D Perez, Luis M Colon-Perez, Panayotis K Thanos, Craig F Ferris, Praveen Kulkarni, John Giordano, David Baron, Mark S Gold
Dopaminergic reward dysfunction in addictive behaviors is well supported in the literature. There is evidence that alterations in synchronous neural activity between brain regions subserving reward and various cognitive functions may significantly contribute to substance-related disorders. This study presents the first evidence showing that a pro-dopaminergic nutraceutical (KB220Z) significantly enhances, above placebo, functional connectivity between reward and cognitive brain areas in the rat. These include the nucleus accumbens, anterior cingulate gyrus, anterior thalamic nuclei, hippocampus, prelimbic and infralimbic loci...
2017: PloS One
https://www.readbyqxmd.com/read/28410131/substance-use-disorder-a-bio-directional-subset-of-reward-deficiency-syndrome
#18
Kenneth Blum, Mark Gold, Zsolt Demetrovics, Trevor Archer, Panayotis K Thanos, David Baron, Rajendra D Badgaiyan
This commentary is to inform clinicians challenged with an increase in people seeking treatment for Substance Use Disorder (SUD), that the ninety percent revolving door, is, in part, due to post-withdrawal, untreated neurotoxicity. This impairment attenuates neurotransmitter signaling and compromises resting state functional connectivity, leading to unwanted sequelae including depression, sleep disturbances, sensation seeking, lack of satisfaction and impulsivity. Neuroimaging studies indicate that neurobiological recovery can take years...
June 1, 2017: Frontiers in Bioscience (Landmark Edition)
https://www.readbyqxmd.com/read/28287793/topiramate-reduces-basal-anxiety-and-relieves-ethanol-withdrawal-induced-anxious-behaviors-in-male-rats
#19
COMPARATIVE STUDY
Décio D Junqueira-Ayres, Laila Asth, Adriana S F S J Ayres, Bruno Lobão-Soares, Vanessa de Paula Soares-Rachetti, Elaine C Gavioli
Anxiety disorders are associated with increased impairments in psychosocial functioning, work productivity and health-related quality of life. In addition, anxiety is a common symptom of ethanol withdrawal and it strongly contributes to relapse. Benzodiazepines are frequently prescribed for relief of anxiety and ethanol withdrawal symptoms but considerable side effects, such sedation, tolerance and dependence, are observed during treatment. Therefore, better drugs are needed for the treatment of anxiety states...
April 2017: Experimental and Clinical Psychopharmacology
https://www.readbyqxmd.com/read/28280885/acute-stress-worsens-the-deficits-in-appetitive-behaviors-for-social-and-sexual-stimuli-displayed-by-rats-after-long-term-withdrawal-from-morphine
#20
Yunjing Bai, David Belin, Xigeng Zheng, Zhengkui Liu, Yue Zhang
RATIONALE: Negative affective states, e.g., anhedonia, are suggested to be involved in the long-lasting motivational processes associated with relapse. Here, we investigated whether anhedonic behaviors could be elicited by an acute stress after protracted abstinence from morphine. OBJECTIVES: The behavioral responses to natural stimuli following exposure to an acute stress were examined after 14 days of withdrawal from morphine. Male rats were pretreated with either a binge-like morphine regimen or daily saline injections for 5 days...
June 2017: Psychopharmacology
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