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https://www.readbyqxmd.com/read/29791013/frontline-science-buprenorphine-decreases-ccl2-mediated-migration-of-cd14-cd16-monocytes
#1
Matias Jaureguiberry-Bravo, Lillie Lopez, Joan W Berman
HIV infection of the CNS causes neuroinflammation and damage that contributes to the development of HIV-associated neurocognitive disorders (HAND) in greater than 50% of HIV-infected individuals, despite antiretroviral therapy (ART). Opioid abuse is a major risk factor for HIV infection. It has been shown that opioids can contribute to increased HIV CNS pathogenesis, in part, by modulating the function of immune cells. HIV enters the CNS within two weeks after peripheral infection by transmigration of infected monocytes across the blood brain barrier (BBB)...
May 23, 2018: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/29790369/an-innovative-perioperative-pain-program-for-chronic-opioid-users-an-academic-medical-center-s-response-to-the-opioid-crisis
#2
Marie N Hanna, Traci J Speed, Ronen Shechter, Michael C Grant, Rosanne Sheinberg, Elizabeth Goldberg, Claudia M Campbell, Nicholas Theodore, Colleen G Koch, Kayode Williams
Increased utilization of prescription opioids for pain management has led to a nationwide public health crisis with alarming rates of addiction and opioid-related deaths. In the surgical setting, opioid prescriptions have been implicated as a contributing factor to the opioid epidemic. The authors developed an innovative model to address aspects of pain management and opioid utilization during preoperative evaluation, acute surgical hospitalization, and postoperative follow-up for chronic opioid users. This program involves multidisciplinary teams that include acute and chronic pain specialists, psychiatrists, integrative medicine specialists, and physical medicine and rehabilitation services...
May 1, 2018: American Journal of Medical Quality: the Official Journal of the American College of Medical Quality
https://www.readbyqxmd.com/read/29788757/expression-of-nmda-receptor-subunits-in-human-blood-lymphocytes-a-peripheral-biomarker-in-online-computer-game-addiction
#3
Mitra-Sadat Sadat-Shirazi, Nasim Vousooghi, Bentolhoda Alizadeh, Seyed Mohammad Makki, Seyed Zeinolabedin Zarei, Shahrzad Nazari, Mohammad Reza Zarrindast
Background and aims Repeated performance of some behaviors such as playing computer games could result in addiction. The NMDA receptor is critically involved in the development of behavioral and drug addictions. It has been claimed that the expression level of neurotransmitter receptors in the brain may be reflected in peripheral blood lymphocytes (PBLs). Methods Here, using a real-time PCR method, we have investigated the mRNA expression of GluN2A, GluN2D, GluN3A, and GluN3B subunits of the NMDA receptor in PBLs of male online computer game addicts (n = 25) in comparison with normal subjects (n = 26)...
May 23, 2018: Journal of Behavioral Addictions
https://www.readbyqxmd.com/read/29785888/the-impact-of-oprm1-s-genetic-polymorphisms-on-methadone-maintenance-treatment-in-opioid-addicts-a-systematic-review
#4
Bilel Oueslati, Olfa Moula, Rim Ghachem
AIM: Methadone is a long-acting opioid receptor agonist. It is prescribed to patients with opioid-related use disorders. The OPRM1 gene encodes for methadone's main receptor. It appears that polymorphisms in OPRM1 may affect the efficacy of methadone maintenance treatment (MMT). OBJECTIVE: Our purpose was to identify all relevant published papers dealing with the impact ofOPRM1's SNPs  on MMT's efficacy and to summarize results in order to evaluate the relevance of conducting pretherapeutic genotyping in opioid addicts prior to the onset of MMT...
May 22, 2018: Pharmacogenomics
https://www.readbyqxmd.com/read/29782941/dopamine-and-serotonin-metabolism-associated-with-morphine-reward-and-its-inhibition-with-buspirone-a-study-in-the-rat-striatum
#5
Darakhshan Jabeen Haleem, Shazia Nawaz, Tabinda Salman
Adaptations within the nucleus accumbens (NAc) and caudate nucleus (CN) dopamine neurotransmission are involved in behavioral sensitization and enhanced incentive motivation towards drug paired stimuli which lead to drug addiction. Serotonin (5-hydroxytryptamine; 5-HT) can modulate dopamine neurotransmission to reduce rewarding effects of drugs of abuse. A recent study from our laboratory shows that rewarding effects of morphine are inhibited in rats co-treated with buspirone. To understand the neurochemical mechanism involved in morphine addiction and its inhibition with buspirone, present study determines the effects of buspirone, morphine and their co-administration on the metabolism of serotonin and dopamine in the NAc and CN...
May 18, 2018: Pharmacology, Biochemistry, and Behavior
https://www.readbyqxmd.com/read/29782623/astrocytic-hypertrophy-in-the-rat-ventral-tegmental-area-following-chronic-morphine-differs-with-age
#6
Emily C Goins, Dusica Bajic
The ventral tegmental area (VTA) is the origin of the mesolimbic dopaminergic system known to play an integral role in mediating reward and development of drug addiction. Although the differences in neuronal plasticity of VTA at various ages remain to be understood, age is known to influence the effects of chronic opioids. In addition, adaptations associated with exposure to opioids within glial populations located in the VTA are poorly understood. The objective of the study was to determine if there are changes in astrocytic immunofluorescent labeling in the VTA following chronic morphine administration in a rat model at different ages: newborn at postnatal day (PD)7 and adult (estimated PD57)...
2018: Journal of neurology and neurorehabilitation research
https://www.readbyqxmd.com/read/29779547/policy-pathways-to-address-provider-workforce-barriers-to-buprenorphine-treatment
#7
Rebecca L Haffajee, Amy S B Bohnert, Pooja A Lagisetty
At least 2.3 million people in the U.S. have an opioid use disorder, less than 40% of whom receive evidence-based treatment. Buprenorphine used as part of medication-assisted treatment has high potential to address this gap because of its approval for use in non-specialty outpatient settings, effectiveness at promoting abstinence, and cost effectiveness. However, less than 4% of licensed physicians are approved to prescribe buprenorphine for opioid use disorder, and approximately 47% of counties lack a buprenorphine-waivered physician...
June 2018: American Journal of Preventive Medicine
https://www.readbyqxmd.com/read/29778626/factors-underlying-risk-taking-in-heroin-dependent-individuals-feedback-processing-and-environmental-contingencies
#8
Daniella M Saleme, Bruno Kluwe-Schiavon, Abdrabo Soliman, Błażej Misiak, Dorota Frydecka, Ahmed A Moustafa
Evidence suggests that factors influencing risk-taking include whether decisions are made based on emotions (affective systems) or cognitions (deliberative systems), the processing of feedback (e.g., deciding to attend a rehabilitation facility for opioid addiction treatment after an intervention held by a family member), and attention to environmental contingencies (e.g., considering the probability of an outcome such as the likelihood of contracting tetanus from a shared needle; or the gains and losses associated with a decision, such as the benefits and costs of taking drugs)...
May 17, 2018: Behavioural Brain Research
https://www.readbyqxmd.com/read/29771745/national-institute-on-drug-abuse-international-program-improving-opioid-use-disorder-treatment-through-international-research-training
#9
Steven W Gust, Judy McCormally
PURPOSE OF REVIEW: For more than 25 years, the National Institute on Drug Abuse (NIDA) has supported research-training programs, establishing a global research network and expanding the knowledge base on substance use disorders. International research to inform approaches to opioid addiction is particularly important and relevant to the United States, where opioid misuse, addiction, and overdose constitute an emerging public health crisis. This article summarizes the NIDA International Program and illustrates its impact by reviewing recent articles about treatment approaches for opioid use disorders (OUD)...
May 15, 2018: Current Opinion in Psychiatry
https://www.readbyqxmd.com/read/29770121/overexpression-of-thioredoxin-1-blocks-morphine-induced-conditioned-place-preference-through-regulating-the-interaction-of-%C3%AE-aminobutyric-acid-and-dopamine-systems
#10
Xiang Li, Mengbing Huang, Lihua Yang, Ningning Guo, Xiaoyan Yang, Zhimin Zhang, Ming Bai, Lu Ge, Xiaoshuang Zhou, Ye Li, Jie Bai
Morphine is one kind of opioid, which is currently the most effective widely utilized pain relieving pharmaceutical. Long-term administration of morphine leads to dependence and addiction. Thioredoxin-1 (Trx-1) is an important redox regulating protein and works as a neurotrophic cofactor. Our previous study showed that geranylgeranylaceton, an inducer of Trx-1 protected mice from rewarding effects induced by morphine. However, whether overexpression of Trx-1 can block morphine-induced conditioned place preference (CPP) in mice is still unknown...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29766293/nmda-receptor-subunits-change-in-the-prefrontal-cortex-of-pure-opioid-and-multi-drug-abusers-a-post-mortem-study
#11
Hamidreza Daneshparvar, Mitra-Sadat Sadat-Shirazi, Monir Fekri, Solmaz Khalifeh, Ali Ziaie, Nasrin Esfahanizadeh, Nasim Vousooghi, Mohammad-Reza Zarrindast
Addiction is a chronic relapsing disorder and is one of the most important issues in the world. Changing the level of neurotransmitters and the activities of their receptors, play a major role in the pathophysiology of substance abuse disorders. It is well-established that N-methyl-D-aspartate receptors (NMDARs) play a significant role in the molecular basis of addiction. NMDAR has two obligatory GluN1 and two regionally localized GluN2 subunits. This study investigated changes in the protein level of GluN1, GluN2A, and GluN2B in the prefrontal cortex of drug abusers...
May 16, 2018: European Archives of Psychiatry and Clinical Neuroscience
https://www.readbyqxmd.com/read/29762767/concerns-and-help-seeking-among-patients-using-opioids-for-management-of-chronic-noncancer-pain
#12
Briony Larance, Gabrielle Campbell, Teleri Moore, Suzanne Nielsen, Raimondo Bruno, Nicholas Lintzeris, Milton Cohen, Wayne Hall, Richard Mattick, Courtney O'Donnell, Louisa Degenhardt
Background: The safety and efficacy of long-term opioid treatment for chronic noncancer pain (CNCP) remains controversial. This study examined whether patients who report problematic opioid use sought help and/or perceived barriers to help-seeking. Methods: Data were collected from 1,086 people prescribed opioids for CNCP via a large prospective cohort called the Pain and Opioids IN Treatment (POINT) study. Patients' characteristics and help-seeking were examined according to scores on the Prescribed Opioids Difficulties Scale (PODS)...
May 11, 2018: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/29762153/increased-mortality-and-reoperation-rates-after-treatment-for-septic-arthritis-of-the-knee-in-people-who-inject-drugs-nationwide-inpatient-sample-2000-2013
#13
David Hyung Won Oh, Alysse Gail Wurcel, David Joseph Tybor, Deirdre Burke, Mariano E Menendez, Matthew Joseph Salzler
BACKGROUND: The United States has a growing opioid epidemic impacting all aspects of health care including orthopaedic surgery. Septic arthritis of the knee is a condition commonly encountered by orthopaedic surgeons related to opioid and injection drug use (IDU). Changes in the frequency of hospitalizations for IDU-related septic arthritis and differences in septic arthritis patient outcomes according to IDU status in the setting of the burgeoning opioid epidemic are unknown. QUESTIONS/PURPOSES: (1) What proportion of patients with septic arthritis of the knee use injection drugs? (2) Are there any differences in complications, reoperations, length of stay, and leaving against medical advice among patients with septic arthritis of the knee with and without IDU? (3) What are the age and racial trends in IDU-related septic arthritis of the knee from 2000 to 2013? METHODS: The Healthcare Cost and Utilization Project, Nationwide Inpatient Sample database of years 2000 to 2013 was utilized for patients between ages 15 and 64 years with a principal discharge diagnosis of native septic arthritis of the lower leg, the vast majority of which represents the knee...
May 14, 2018: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/29757600/dark-classics-in-chemical-neuroscience-morphine
#14
Andrea L Devereaux, Susan L Mercer, Christopher W Cunningham
As the major psychoactive agent in opium and direct precursor for heroin, morphine is a historically critical molecule in chemical neuroscience. A structurally complex phenanthrene alkaloid produced by Papaver somniferum, morphine has fascinated chemists seeking to disentangle pharmacologically beneficial analgesic effects from addiction, tolerance, and dependence liabilities. In this review, we will detail the history of morphine, from the first extraction and isolation by Sertürner in 1804 to the illicit use of morphine and proliferation of opioid use and abuse disorders currently ravaging the United States...
May 14, 2018: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/29754475/regulator-of-g-protein-signaling-4-rgs4-controls-morphine-reward-by-glutamate-receptor-activation-in-the-nucleus-accumbens-of-the-mouse-brain
#15
Juhwan Kim, Sueun Lee, Sohi Kang, Tae-Il Jeon, Man-Jong Kang, Tae-Hoon Lee, Yong Sik Kim, Key-Sun Kim, Heh-In Im, Changjong Moon
Crosstalk between G-protein signaling and glutamatergic transmission within the brain reward circuits is critical for long-term emotional effects (depression and anxiety), cravings, and negative withdrawal symptoms associated with opioid addiction. A previous study showed that Regulator of G-protein signaling 4 (RGS4) may be implicated in opiate action in the nucleus accumbens (NAc). However, the mechanism of the NAc-specific RGS4 actions that induce the behavioral responses to opiates remains largely unknown...
May 10, 2018: Molecules and Cells
https://www.readbyqxmd.com/read/29752906/tramadol-understanding-the-risk-of-serotonin-syndrome-and-seizures
#16
REVIEW
Sameer Hassamal, Karen Miotto, William Dale, Itai Danovitch
Tramadol is commonly prescribed for pain control because it presents a lower risk for addiction and respiratory depression compared to other opioids. However, tramadol's serotonin and norepinephrine reuptake inhibitory effects result in a unique adverse effect profile. Two such adverse events are serotonin syndrome and seizures. The prevalence of tramadol-induced serotonin syndrome and seizures is modest in the general population but if left untreated, the morbidity and mortality can be high, and therefore prompt recognition and management is essential...
May 9, 2018: American Journal of Medicine
https://www.readbyqxmd.com/read/29752610/acupuncture-and-the-opioid-epidemic-in-america
#17
Chang-Zhen Gong, Wei Liu
The opioid epidemic has become a signifificant public health crisis in the United States of America. This crisis has elicited a response at high levels of governmental and health care organizations including the American College of Physicians, the Food and Drug Administration, the Joint Commission, the National Academies of Science, Engineering and Medicine, the National Association of Attorneys General, and the White House. In various ways, these organizations have recognized that acupuncture can play an important role in dealing with the opioid epidemic...
May 2018: Chinese Journal of Integrative Medicine
https://www.readbyqxmd.com/read/29751227/ampa-receptor-positive-allosteric-modulators-attenuate-morphine-tolerance-and-dependence
#18
Xiaoyu Hu, Xuebi Tian, Xiao Guo, Ying He, Haijun Chen, Jia Zhou, Zaijie Jim Wang
Development of opioid tolerance and dependence hinders the use of opioids for the treatment of chronic pain. In searching for the mechanism and potential intervention for opioid tolerance and dependence, we studied the action of two positive allosteric modulators of the α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor (AMPAR PAMs). In mice treated with morphine (100 mg/kg, s.c.), acute morphine tolerance and dependence developed in 4-6 h. Treatment with aniracetam, a well-established AMPAR PAM, was able to completely prevent and reverse the development of acute antinociceptive tolerance to morphine...
April 25, 2018: Neuropharmacology
https://www.readbyqxmd.com/read/29747461/role-of-the-bone-microenvironment-in-the-development-of-painful-complications-of-skeletal-metastases
#19
REVIEW
Sun H Park, Matthew R Eber, D Brooke Widner, Yusuke Shiozawa
Cancer-induced bone pain (CIBP) is the most common and painful complication in patients with bone metastases. It causes a significant reduction in patient quality of life. Available analgesic treatments for CIBP, such as opioids that target the central nervous system, come with severe side effects as well as the risk of abuse and addiction. Therefore, alternative treatments for CIBP are desperately needed. Although the exact mechanisms of CIBP have not been fully elucidated, recent studies using preclinical models have demonstrated the role of the bone marrow microenvironment (e...
May 10, 2018: Cancers
https://www.readbyqxmd.com/read/29743514/transcriptomic-integration-of-d-4-r-and-mor-signaling-in-the-rat-caudate-putamen
#20
Alejandra Valderrama-Carvajal, Haritz Irizar, Belén Gago, Haritz Jiménez-Urbieta, Kjell Fuxe, María C Rodríguez-Oroz, David Otaegui, Alicia Rivera
Morphine binding to opioid receptors, mainly to μ opioid receptor (MOR), induces alterations in intracellular pathways essential to the initial development of addiction. The activation of the dopamine D4 receptor (D4 R), which is expressed in the caudate putamen (CPu), mainly counteracts morphine-induced alterations in several molecular networks. These involve transcription factors, adaptive changes of MOR signaling, activation of the nigrostriatal dopamine pathway and behavioural effects, underlining functional D4 R/MOR interactions...
May 9, 2018: Scientific Reports
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