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Opioids

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https://www.readbyqxmd.com/read/29352503/in-vivo-effects-of-%C3%AE-opioid-receptor-agonist-%C3%AE-opioid-receptor-antagonist-peptidomimetics-following-acute-and-repeated-administration
#1
Jessica P Anand, Kelsey E Kochan, Anthony F Nastase, Deanna Montgomery, Nicholas W Griggs, John R Traynor, Henry I Mosberg, Emily M Jutkiewicz
BACKGROUND AND PURPOSE: Mu opioid receptor (μ-receptor) agonists are used for pain management, but produce adverse effects including tolerance, dependence, and euphoria. The co-administration of a μ-receptor agonist with a delta opioid receptor (δ-receptor) antagonist has been shown to produce antinociception with reduced development of some side effects. We characterized the effects of three μ-receptor agonist/δ-receptor antagonist peptidomimetics in vivo after acute and repeated administration to determine if this profile provides a viable alternative to traditional opioid analgesics...
January 19, 2018: British Journal of Pharmacology
https://www.readbyqxmd.com/read/29352454/decreased-opioid-consumption-and-enhance-recovery-with-the-addition-of-iv-acetaminophen-in-colorectal-patients-a-prospective-multi-institutional-randomized-double-blinded-placebo-controlled-study-dociva-study
#2
Amir H Aryaie, Sepehr Lalezari, Wallace K Sergent, Yana Puckett, Christopher Juergens, Craig Ratermann, Cari Ogg
BACKGROUND: We hypothesized that administration of IV acetaminophen alone would reduce the opioid consumption in post-operative colorectal surgery and reduce the side effects of narcotics. METHODS: Patients were randomized to receive either IV acetaminophen or placebo in addition to opioid PCA. Primary endpoints evaluated were opioid consumption and pain visual analogue scale score (PVASS) during first 48 h post-operatively. Secondary endpoints evaluated were time of return of GI function (ROGIF), time to diet ordered (TTDO), length of hospital stay (LOHS), and occurrence of ileus...
January 19, 2018: Surgical Endoscopy
https://www.readbyqxmd.com/read/29352328/attenuation-of-serotonin-induced-itch-by-sumatriptan-possible-involvement-of-endogenous-opioids
#3
Nazgol-Sadat Haddadi, Arash Foroutan, Saeed Shakiba, Khashayar Afshari, Sattar Ostadhadi, Maryam Daneshpazhooh, Ahmad-Reza Dehpour
Serotonin (5-hydroxytryptamine or 5-HT) is a neurotransmitter in itch and impaired serotonin signaling has been linked to a variety of itch conditions. Intradermal injection of 5-HT induces scratching behavior in mice through stimulation of 5-HT receptors. Previous studies have demonstrated that selective 5-HT1B/1D receptors agonists, including sumatriptan, inhibits neurotransmission. We have also reported that sumatriptan suppresses chloroquine-induced itch. Therefore, we investigated if sumatriptan has inhibitory effects on serotonin-induced itch in mice...
January 19, 2018: Archives of Dermatological Research
https://www.readbyqxmd.com/read/29352321/inflammatory-linked-changes-in-cpg-island-methylation-of-three-opioid-peptide-genes-in-a-rat-model-for-pain
#4
Charlotte Louise Justine Jacobi, Christoph Stein
Expression of the opioid peptide genes proopiomelanocortin (Pomc), proenkephalin (Penk), and prodynorphin (Pdyn), in immune cells plays a key role in endogenous pain control. In a rat model of painful unilateral paw inflammation, we isolated cells from popliteal lymph nodes and evaluated the role of CpG island C5-methylation on the transcriptional activation of those genes. Using methylated DNA immunoprecipitation, we sorted gDNA into methylated (me) and non-me fractions and then determined the CpG island methylation status of each fraction via quantitative Real Time-PCR (qRT-PCR)...
2018: PloS One
https://www.readbyqxmd.com/read/29350320/ethical-implications-in-vaccine-pharmacotherapy-for-treatment-and-prevention-of-drug-of-abuse-dependence
#5
Anna Carfora, Paola Cassandro, Alessandro Feola, Francesco La Sala, Raffaella Petrella, Renata Borriello
Different immunotherapeutic approaches are in the pipeline for the treatment of drug dependence. "Drug vaccines" aim to induce the immune system to produce antibodies that bind to drugs and prevent them from inducing rewarding effects in the brain. Drugs of abuse currently being tested using these new approaches are opioids, nicotine, cocaine, and methamphetamine. In human clinical trials, "cocaine and nicotine vaccines" have been shown to induce sufficient antibody levels while producing few side effects. Studies in humans, determining how these vaccines interact in combination with their target drug, are underway...
January 19, 2018: Journal of Bioethical Inquiry
https://www.readbyqxmd.com/read/29349283/is-self-rated-health-in-adolescence-a-predictor-of-prescribed-medication-in-adulthood-findings-from-the-nord-tr%C3%A3-ndelag-health-study-and-the-norwegian-prescription-database
#6
Tina Lokke Vie, Karl Ove Hufthammer, Turid Lingaas Holmen, Eivind Meland, Hans Johan Breidablik
Self-rated health (SRH) is a commonly used health indicator predicting morbidity and mortality in a range of populations. However, the relationship between SRH and medication is not well established. The aim of this study was to examine adolescent SRH as a predictor for prescribed medication later in young adulthood. Eighteen years' prospective data from the Nord-Trøndelag Health Study (HUNT) and the Norwegian Prescription Database (NorPD) were analyzed. Baseline data, gathered from 8982 adolescents (mean age 16...
April 2018: SSM—Population Health
https://www.readbyqxmd.com/read/29349219/drug-involvement-in-fatal-overdoses
#7
Christopher J Ruhm
Death certificate data from the Multiple Cause of Death (MCOD) files were analyzed to better understand the drug categories most responsible for the increase in fatal overdoses occurring between 1999 and 2014. Statistical adjustment methods were used to account for the understatement in reported drug involvement occurring because death certificates frequently do not specify which drugs were involved in the deaths. The frequency of combination drug use introduced additional uncertainty and so a distinction was made between any versus exclusive drug involvement...
December 2017: SSM—Population Health
https://www.readbyqxmd.com/read/29347984/the-effects-of-state-rules-on-opioid-prescribing-in-indiana
#8
Morhaf Al Achkar, Shaun Grannis, Debra Revere, Palmer MacKie, Meredith Howard, Sumedha Gupta
BACKGROUND: Prescription opioids have been linked to over half of the 28,000 opioid overdose deaths in 2014. High rates of prescription opioid non-medical use have continued despite nearly all states implementing large-scale prescription drug monitoring programs (PDMP), which points to the need to examine the impact of state PDMP's on curbing inappropriate opioid prescribing. In the short-term, PDMPs have been associated with short-term prescribing declines. Yet little is known about how such policies differentially impact patient subgroups or are interpreted by prescribing providers...
January 18, 2018: BMC Health Services Research
https://www.readbyqxmd.com/read/29347949/effects-of-surgery-and-anesthetic-choice-on-immunosuppression-and-cancer-recurrence
#9
REVIEW
Ryungsa Kim
BACKGROUND: The relationship between surgery and anesthetic-induced immunosuppression and cancer recurrence remains unresolved. Surgery and anesthesia stimulate the hypothalamic-pituitary-adrenal (HPA) axis and sympathetic nervous system (SNS) to cause immunosuppression through several tumor-derived soluble factors. The potential impact of surgery and anesthesia on cancer recurrence was reviewed to provide guidance for cancer surgical treatment. METHODS: PubMed was searched up to December 31, 2016 using search terms such as, "anesthetic technique and cancer recurrence," "regional anesthesia and cancer recurrence," "local anesthesia and cancer recurrence," "anesthetic technique and immunosuppression," and "anesthetic technique and oncologic surgery...
January 18, 2018: Journal of Translational Medicine
https://www.readbyqxmd.com/read/29346699/teaching-chronic-pain-in-the-family-medicine-residency
#10
Kimberly Zoberi, Kelly M Everard
BACKGROUND AND OBJECTIVES: Chronic pain is a significant condition affecting many Americans. Primary care physicians play an important role in chronic pain management, but many residents and physicians feel poorly prepared to manage it. METHODS: Data were collected as part of the 2016 Council of Academic Family Medicine Educational Research Alliance (CERA) Program Director Survey, which was sent electronically to 484 program directors in the United States. The authors sought to determine whether residency directors' attitudes about treating chronic pain were associated with the amount of time devoted to teaching family medicine residents about chronic pain assessment, therapy (use of opioids, use adjuvant pain medications, use of other nonopioids, use of nonpharmacological treatments), and risk management (risk assessment, use of pain management contracts, informed consent when prescribing opioids, and urine drug monitoring)...
January 2018: Family Medicine
https://www.readbyqxmd.com/read/29346579/web-based-cognitive-behavior-therapy-for-chronic-pain-patients-with-aberrant-drug-related-behavior-outcomes-from-a-randomized-controlled-trial
#11
Honoria Guarino, Chunki Fong, Lisa A Marsch, Michelle C Acosta, Cassandra Syckes, Sarah K Moore, Ricardo A Cruciani, Russell K Portenoy, Dennis C Turk, Andrew Rosenblum
Objective: There is high unmet need for effective behavioral treatments for chronic pain patients at risk for or with demonstrated histories of opioid misuse. Despite growing evidence supporting technology-based delivery of self-management interventions for chronic pain, very few such programs target co-occurring chronic pain and aberrant drug-related behavior. This randomized controlled trial evaluated the effectiveness of a novel, web-based self-management intervention, grounded in cognitive behavior therapy, for chronic pain patients with aberrant drug-related behavior...
January 13, 2018: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/29346444/social-and-structural-barriers-for-adherence-to-methadone-maintenance-treatment-among-vietnamese-opioid-dependence-patients
#12
Bach Xuan Tran, Long Hoang Nguyen, Tung Thanh Tran, Carl A Latkin
INTRODUCTION: Methadone maintenance treatment (MMT) services may reduce the risk of HIV transmission if patients completely adhere to the treatment. Identifying adherence patterns and potential related factors is vital for the sustainability of MMT program in Vietnam. This study examined social and structural factors associated with adherence to MMT among patients in different service delivery models. MATERIALS AND METHODS: A total of 510 patients at three MMT clinics in Hanoi were interviewed...
2018: PloS One
https://www.readbyqxmd.com/read/29346235/posttraumatic-stress-in-children-after-injury-the-role-of-acute-pain-and-opioid-medication-use
#13
Aimee K Hildenbrand, Nancy Kassam-Adams, Lamia P Barakat, Kristen L Kohser, Jeffrey A Ciesla, Douglas L Delahanty, Joel A Fein, Lindsay B Ragsdale, Meghan L Marsac
OBJECTIVES: After injury, many children experience posttraumatic stress symptoms (PTSS) that negatively impact recovery. Acute pain and PTSS share neurobiological pathways, and acute dosage of morphine has been linked to reduced PTSS in naturalistic studies. However, the complex interactions between pain, morphine and other opioid use, and PTSS have yet to be investigated in robust pediatric samples.This prospective, longitudinal study examined relationships between acute pain, opioid medications, and PTSS after pediatric injury...
January 16, 2018: Pediatric Emergency Care
https://www.readbyqxmd.com/read/29346231/the-complex-association-of-race-ethnicity-with-pain-treatment-quality-in-an-urban-medical-center-with-2-pediatric-emergency-departments
#14
Erika M Kipping, James M Chamberlain
OBJECTIVE: This study aimed to explore racial differences in analgesia quality. METHODS: A retrospective cross-sectional study of 24,733 visits by individuals 21 years or younger with pain scores of 4 to 10 was performed using electronic medical records. We compared 2 process metrics, treatment with any analgesics within 60 minutes and treatment with opioids within 60 minutes, and one outcome metric, a reduction in pain score by 2 or more points within 90 minutes...
January 16, 2018: Pediatric Emergency Care
https://www.readbyqxmd.com/read/29346228/analgesia-of-combined-femoral-triangle-and-obturator-nerve-blockade-is-superior-to-local-infiltration-analgesia-after-total-knee-arthroplasty-with-high-dose-intravenous-dexamethasone
#15
Charlotte Runge, Jan Mick Jensen, Louise Clemmesen, Henriette Bach Knudsen, Carsten Holm, Jens Børglum, Thomas Fichtner Bendtsen
BACKGROUND AND OBJECTIVES: High-dose intravenous dexamethasone reduces the postoperative opioid requirement and is often included in the multimodal analgesia strategy after total knee arthroplasty (TKA). Combined obturator nerve and femoral triangle blockade (OFB) reduces the opioid consumption and pain after TKA better than local infiltration analgesia (LIA). The question is whether preoperative high-dose intravenous dexamethasone would cancel out the superior analgesic effect of OFB compared with LIA...
January 17, 2018: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/29346227/refractory-pain-management-in-amyloid-associated-peripheral-neuropathy
#16
Nafisseh S Warner, James C Watson, Markus A Bendel, Susan M Moeschler
OBJECTIVE: Systemic amyloidosis is a disease that often involves multiple organ systems, including the peripheral nervous system. Patients may present with severe, refractory neuropathic pain; however, the optimal treatment approach for pain for these patients remains unclear. CASE REPORT: A man with severe, refractory neuropathic pain in his bilateral upper and lower extremities and the trunk secondary to amyloid neuropathy is presented. Multiple medication trials, including neuropathic and opioid agents, produced considerable adverse effects and minimal relief...
January 17, 2018: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/29345640/strategy-for-making-safer-opioids-bolstered
#17
Susruta Majumdar, Lakshmi A Devi
No abstract text is available yet for this article.
January 18, 2018: Nature
https://www.readbyqxmd.com/read/29344928/morphine-mediated-brain-region-specific-astrocytosis-involves-the-er-stress-autophagy-axis
#18
Susmita Sil, Palsamy Periyasamy, Ming-Lei Guo, Shannon Callen, Shilpa Buch
A recent study from our lab has revealed a link between morphine-mediated autophagy and synaptic impairment. The current study was aimed at investigating whether morphine-mediated activation of astrocytes involved the ER stress/autophagy axis. Our in vitro findings demonstrated upregulation of GFAP indicating astrocyte activation with a concomitant increase in the production of proinflammatory cytokines in morphine-exposed human astrocytes. Using both pharmacological and gene-silencing approaches, it was demonstrated that morphine-mediated defective autophagy involved upstream activation of ER stress with subsequent downstream astrocyte activation via the μ-opioid receptor (MOR)...
January 17, 2018: Molecular Neurobiology
https://www.readbyqxmd.com/read/29344826/phytochemical-analysis-and-evaluation-of-the-antioxidant-anti-inflammatory-and-antinociceptive-potential-of-phlorotannin-rich-fractions-from-three-mediterranean-brown-seaweeds
#19
Amal Abdelhamid, Meriem Jouini, Haifa Bel Haj Amor, Zeineb Mzoughi, Mehdi Dridi, Rafik Ben Said, Abderrahman Bouraoui
Phlorotannins, phenolic compounds produced exclusively by seaweeds, have been reported to possess various pharmacological properties. However, there have been few works on these compounds from Mediterranean seaweeds. In this study, we investigated the phytochemical analysis and pharmacological potential of phlorotannin-rich fractions from three brown seaweeds collected along the Tunisia coast: Cystoseira sedoides (PHT-SED), Cladostephus spongeosis (PHT-CLAD), and Padina pavonica (PHT-PAD). Phytochemical determinations showed considerable differences in total phenolic content (TPC) and phlorotannin content (PHT)...
January 18, 2018: Marine Biotechnology
https://www.readbyqxmd.com/read/29344736/predictors-of-analgesic-efficacy-of-neurolytic-celiac-plexus-block-in-patients-with-unresectable-pancreatic-cancer-the-importance-of-timing
#20
Duck Mi Yoon, Kyung Bong Yoon, In Chan Baek, Seo Hee Ko, Shin Hyung Kim
BACKGROUND: Neurolytic celiac plexus block (NCPB) is a safe and effective method for reducing abdominal cancer pain. However, the analgesic efficacy of NCPB is not always guaranteed. The aim of this retrospective study was to identify predictors for the analgesic efficacy of NCPB in patients with unresectable pancreatic cancer. METHODS: Patients with unresectable pancreatic cancer who underwent NCPB from 2006 to 2015 were enrolled. Good analgesia after NCPB was defined as ≥ 50% reduction in pain score at day 30...
January 17, 2018: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
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