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https://www.readbyqxmd.com/read/27919821/specific-micrornas-comparisons-in-hypoxia-and-morphine-preconditioning-against-hypoxia-reoxgenation-injury-with-and-without-heart-failure
#1
Hai-Juan Zhu, Zheng-Yi Han, Shu-Fang He, Shi-Yun Jin, Shi-Jin Xu, Xiang-Dong Fang, Ye Zhang
AIMS: Ischemia reperfusion (I/R) injury is an inevitable event arising during the cardiovascular diseases development and the process of potent surgical treatments. microRNAs (miRNAs) are critical regulators of multiple cell processes including I/R injury. The present study aims to quantify miRNA alterations and regulated genes upon hypoxia-reoxygenation (H/R) injury in a rat heart failure model comparing with normal cardiomyocytes. MAIN METHODS: Chronic heart failure was established by injecting doxorubicin (2mg/kg/week) for 6weeks, then H/R was performed on primary cultured cardiomyocytes isolated from normal and failed heart...
December 2, 2016: Life Sciences
https://www.readbyqxmd.com/read/27902847/food-deprivation-facilitates-reinstatement-of-morphine-induced-conditioned-place-preference-role-of-intra-accumbal-dopamine-d2-like-receptors-in-associating-reinstatement-of-morphine-cpp-with-stress
#2
Fatemeh Sadeghzadeh, Vahab Babapour, Abbas Haghparast
The high rate of relapse to drug use is one of the main problems in the treatment of addiction. Stress plays the essential role in drug abuse and relapse; nevertheless, little is known about the mechanisms underlying stress and relapse. Accordingly, the effects of intra-accumbal administration of Sulpiride, as a dopamine D2-like receptor antagonist, on an ineffective morphine dose+food deprivation(FD)- and morphine priming-induced reinstatement of conditioned place preference (CPP). 104 adult male albino Wistar rats weighing 200-280g were bilaterally implanted by cannula into the nucleus accumbens (NAc)...
November 30, 2016: Synapse
https://www.readbyqxmd.com/read/27899254/thalidomide-attenuates-the-development-and-expression-of-antinociceptive-tolerance-to-%C3%AE-opioid-agonist-morphine-through-l-arginine-inos-and-nitric-oxide-pathway
#3
Muhammad Imran Khan, Sattar Ostadhadi, Faiza Mumtaz, Majid Momeny, Farima Moghaddaskho, Mahsa Hassanipour, Shahram Ejtemaei-Mehr, Ahmad Reza Dehpour
Morphine is a μ-opioid analgesic drug which is used in the treatment and management of chronic pain. However, due to development of antinociceptive tolerance its clinical use is limited. Thalidomide is an old glutamic acid derivative which recently reemerged because of its potential to counteract a number of disorders including neurodegenerative disorders. The potential underlying mechanisms and effects of thalidomide on morphine-induced antinociceptive tolerance is still elusive. Hence, the present study was designed to explore the effect of thalidomide on the development and expression of morphine antinociceptive tolerance targeting l-arginine-nitric oxide (NO) pathway in mice and T98G human glioblastoma cell line...
November 26, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27871559/quality-of-recovery-from-anesthesia-of-patients-undergoing-balanced-or-total-intravenous-general-anesthesia-prospective-randomized-clinical-trial
#4
Eduardo Toshiyuki Moro, Fábio Caetano Oliveira Leme, Bernardo Roveda Noronha, Gustavo Farinha Pinto Saraiva, Nathália Vianna de Matos Leite, Laís Helena Camacho Navarro
STUDY OBJECTIVES: The aim of the present study was to assess the quality of recovery from anesthesia of patients subjected to otorhinolaryngological (ORL) surgery under balanced or total intravenous general anesthesia by means of Quality of Recovery-40 (QoR-40) questionnaire. DESIGN: Prospective randomized clinical trial. SETTING: The setting is at an operating room, a postoperative recovery area, and a hospital ward. PATIENTS: One-hundred thirty American Society of Anesthesiologists physical status I or II patients scheduled to undergo general anesthesia for ORL interventions under remifentanil, in combination with sevoflurane (balanced technique) or propofol (total intravenous anesthesia)...
December 2016: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/27843771/multi-modal-preemptive-analgesia-with-pregabalin-acetaminophen-naproxen-and-dextromethorphan-in-radical-neck-dissection-surgery-a-randomized-clinical-trial
#5
Hamid Reza Amiri, Mojtaba Mirzaei, Mohammad Taghi Beig Mohammadi, Farhad Tavakoli
BACKGROUND: Preemptive analgesia may be considered as a method not only to alleviate postoperative pain but also to decrease analgesic consumption. Different regimens are suggested, but there is currently no standard. OBJECTIVES: The aim was to measure the efficacy of preemptive analgesia with pregabalin, acetaminophen, naproxen, and dextromethorphan in radical neck dissection surgery for reducing the intensity of pain and morphine consumption. PATIENTS AND METHODS: This study was conducted as a randomized double-blind clinical trial...
August 2016: Anesthesiology and Pain Medicine
https://www.readbyqxmd.com/read/27792112/patient-controlled-intermittent-epidural-bolus-versus-epidural-infusion-for-posterior-spinal-fusion-after-adolescent-idiopathic-scoliosis-prospective-randomized-double-blinded-study
#6
Mehmet Ali Erdogan, Ulku Ozgul, Muharrem Uçar, Mehmet Fatih Korkmaz, Mustafa Said Aydogan, Ahmet Selim Ozkan, Cemil Çolak, Mahmut Durmuş
STUDY DESIGN: A prospective randomized double-blinded study. OBJECTIVE: To compare the efficacy and side effects of patient-controlled intermittent bolus epidural analgesia (PCIEA) and patient-controlled continuous epidural analgesia (PCCEA) for postoperative pain control in adolescent idiopathic scoliosis. SUMMARY OF BACKGROUND DATA: Epidural analgesia is an accepted efficacious and safe procedure for postoperative pain management in scoliosis surgery...
October 25, 2016: Spine
https://www.readbyqxmd.com/read/27782940/effects-of-obesity-and-leptin-deficiency-on-morphine-pharmacokinetics-in-a-mouse-model
#7
Nicholas M Dalesio, Craig W Hendrix, Douglas Hale McMichael, Carol B Thompson, Carlton K K Lee, Huy Pho, Rafael S Arias, Rachael Rzasa Lynn, Jeffrey Galinkin, Myron Yaster, Robert H Brown, Alan R Schwartz
BACKGROUND: Obesity causes multiorgan dysfunction, specifically metabolic abnormalities in the liver. Obese patients are opioid-sensitive and have high rates of respiratory complications after surgery. Obesity also has been shown to cause resistance to leptin, an adipose-derived hormone that is key in regulating hunger, metabolism, and respiratory stimulation. We hypothesized that obesity and leptin deficiency impair opioid pharmacokinetics (PK) independently of one another. METHODS: Morphine PK were characterized in C57BL/6J wild-type (WT), diet-induced obese (DIO), and leptin-deficient (ob/ob) mice, and in ob/ob mice given leptin-replacement (LR) therapy...
December 2016: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/27776098/single-dose-adductor-canal-block-with-local-infiltrative-analgesia-compared-with-local-infiltrate-analgesia-after-total-knee-arthroplasty-a-randomized-double-blind-placebo-controlled-trial
#8
Antoun Nader, Mark C Kendall, David W Manning, Matthew Beal, Rohit Rahangdale, Robert Dekker, Gildasio S De Oliveira, Eric Kamenetsky, Robert J McCarthy
BACKGROUND AND OBJECTIVES: A single-dose adductor canal block can provide postoperative analgesia for patients undergoing total knee arthroplasty (TKA). The purpose of this study was to assess postoperative opioid consumption after ultrasound-guided single-injection bupivacaine compared with saline adductor canal block for patients undergoing TKA. METHODS: After institutional review board approval, written informed consent was obtained from patients (>18 years old) undergoing elective TKA...
November 2016: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/27687125/electroacupuncture-in-conscious-free-moving-mice-reduces-pain-by-ameliorating-peripheral-and-central-nociceptive-mechanisms
#9
Ying Wang, Jianxun Lei, Mihir Gupta, Fei Peng, Sarah Lam, Ritu Jha, Ellis Raduenz, Al J Beitz, Kalpna Gupta
Integrative approaches such as electroacupuncture, devoid of drug effects are gaining prominence for treating pain. Understanding the mechanisms of electroacupuncture induced analgesia would benefit chronic pain conditions such as sickle cell disease (SCD), for which patients may require opioid analgesics throughout life. Mouse models are instructive in developing a mechanistic understanding of pain, but the anesthesia/restraint required to administer electroacupuncture may alter the underlying mechanisms. To overcome these limitations, we developed a method to perform electroacupuncture in conscious, freely moving, unrestrained mice...
September 30, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27622453/effect-of-parecoxib-as-an-adjunct-to-patient-controlled-epidural-analgesia-after-abdominal-hysterectomy-a-multicenter-randomized-placebo-controlled-trial
#10
Wei-Feng Liu, Hai-Hua Shu, Guo-Dong Zhao, Shu-Ling Peng, Jin-Fang Xiao, Guan-Rong Zhang, Ke-Xuan Liu, Wen-Qi Huang
OBJECTIVE: This multicenter, randomized, placebo-controlled study evaluated the efficacy and side effects of parecoxib during patient-controlled epidural analgesia (PCEA) after abdominal hysterectomy. METHODS: A total of 240 patients who were scheduled for elective abdominal hysterectomy under combined spinal-epidural anesthesia received PCEA plus postoperative intravenous parecoxib 40 mg or saline every 12 h for 48 h after an initial preoperative dose of parecoxib 40 mg or saline...
2016: PloS One
https://www.readbyqxmd.com/read/27573832/a-novel-orvinol-analog-bu08028-as-a-safe-opioid-analgesic-without-abuse-liability-in-primates
#11
Huiping Ding, Paul W Czoty, Norikazu Kiguchi, Gerta Cami-Kobeci, Devki D Sukhtankar, Michael A Nader, Stephen M Husbands, Mei-Chuan Ko
Despite the critical need, no previous research has substantiated safe opioid analgesics without abuse liability in primates. Recent advances in medicinal chemistry have led to the development of ligands with mixed mu opioid peptide (MOP)/nociceptin-orphanin FQ peptide (NOP) receptor agonist activity to achieve this objective. BU08028 is a novel orvinol analog that displays a similar binding profile to buprenorphine with improved affinity and efficacy at NOP receptors. The aim of this preclinical study was to establish the functional profile of BU08028 in monkeys using clinically used MOP receptor agonists for side-by-side comparisons in various well-honed behavioral and physiological assays...
September 13, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27537587/comparison-of-the-morphine-sparing-effect-of-intraoperative-dexmedetomidine-with-and-without-loading-dose-following-general-anesthesia-in-multiple-fracture-patients-a-prospective-randomized-controlled-clinical-trial
#12
Jin-Ning Zhao, Min Kong, Bin Qi, Dong-Jian Ge
Intraoperative dexmedetomidine (DEX) with or without loading dose both promote morphine-sparing effect in patient-controlled analgesia on postoperative acute pain. However, the contribution of the loading dose to this effect is largely unknown, especially in long-lasting surgeries. The present study was designed to investigate the role of a loading dose of DEX in this morphine-sparing effect in multiple-fracture patients following general anesthesia.Eighty-six patients scheduled multiple-fracture surgeries under general anesthesia were allocated into 3 groups which were maintained with propofol/remifentanil/Ringer solution (PRR), propofol/remifentanil/DEX with (PRDw), or without (PRDo) DEX loading dose before induction, respectively...
August 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27521722/involvement-of-atp-sensitive-potassium-channels-and-the-opioid-system-in-the-anticonvulsive-effect-of-zolpidem-in-mice
#13
Mehdi Sheikhi, Armin Shirzadian, Amir Dehdashtian, Shayan Amiri, Sattar Ostadhadi, Mehdi Ghasemi, Ahmad Reza Dehpour
Zolpidem is a hypnotic medication that mainly exerts its function through activating γ-aminobutyric acid (GABA)A receptors. There is some evidence that zolpidem may have anticonvulsive effects. However, the mechanisms underlying this effect have not been elucidated yet. In the present study, we used the pentylentetrazole (PTZ)-induced generalized seizure model in mice to investigate whether zolpidem can affect seizure threshold. We also further evaluated the roles of ATP-sensitive potassium (KATP) channels as well as μ-opioid receptors in the effects of zolpidem on seizure threshold...
September 2016: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/27511893/rearing-environment-differentially-modulates-cocaine-self-administration-after-opioid-pretreatment-a-behavioral-economic-analysis
#14
Rebecca S Hofford, Joshua S Beckmann, Michael T Bardo
BACKGROUND: Research has shown that previous experiences during development, especially if stressful, can alter an organism's response to opioids later in life. Given the previous literature on opioid modulation of cocaine self-administration, the current study raised rats in either an enriched condition (EC) or isolated condition (IC) and employed behavioral economics to study the effects of naltrexone and morphine on cocaine self-administration. METHODS: EC and IC rats were trained to lever press for cocaine using a within-session demand procedure...
October 1, 2016: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/27504867/efficacy-of-full-%C3%A2%C2%B5-opioid-receptor-agonists-is-not-impaired-by-concomitant-buprenorphine-or-mixed-opioid-agonists-antagonists-preclinical-and-clinical-evidence
#15
J C G van Niel, J Schneider, T M Tzschentke
Buprenorphine and the mixed agonists/antagonists nalbuphine and pentazocine, formerly classified as µ-opioid (MOP) receptor antagonists, have more recently been shown to be partial to full agonists of the human MOP receptor. These receptors do not necessarily have to be maximally activated for a full physiological response. Partial agonists can also sufficiently stimulate signaling processes leading to a full analgesic response, as shown by the effectiveness of buprenorphine, nalbuphine and pentazocine in animal pain models and in clinical settings where these drugs induce analgesia with full efficacy without a ceiling effect...
August 9, 2016: Drug Research
https://www.readbyqxmd.com/read/27454662/is-there-any-analgesic-benefit-from-preoperative-vs-postoperative-administration-of-etoricoxib-in-total-knee-arthroplasty-under-spinal-anaesthesia-a-randomised-double-blind-placebo-controlled-trial
#16
Ana Maria Munteanu, Simona Cionac Florescu, Denisa Madalina Anastase, Cristian Ioan Stoica
BACKGROUND: Optimal postoperative analgesia is a challenge for the anaesthesiologist, with the ideal combination of methods, drugs, doses and timing of administration still the subject of research. The COX-2 inhibitors are a class of NSAIDs that may provide useful perioperative analgesia but the optimal timing of administration has not been elucidated. OBJECTIVE: We hypothesised that etoricoxib given 1 h before total knee arthroplasty under spinal anaesthesia will decrease the cumulative dose of intravenous and subcutaneous morphine required to maintain pain intensity of 3 or less on a 10-point numerical rating scale (NRS) during the first postoperative 48 h compared with the same dose of etoricoxib given after surgery...
November 2016: European Journal of Anaesthesiology
https://www.readbyqxmd.com/read/27454282/intracerebroventricular-pain-treatment-with-analgesic-mixtures-including-ziconotide-for-intractable-pain
#17
Héléne Staquet, Denis Dupoiron, Edmond Nader, Philippe Menei
Intracerebroventricular (ICV) administration of opioids for control of intractable cancer pain has been used since 1982. We present here our experience of intracerebroventricular administration of pain treatments including ziconotide associated with morphine and ropivacaine for patients resistant to a conventional approach, with nociceptive, neuropathic, or mixed pain. These clinical cases were conducted with patients suffering from refractory pain, more than 6/10 on a numerical pain rating scale (NPRS) while on high-dose medical treatment and/or intolerance with significant side effects from oral medication...
July 2016: Pain Physician
https://www.readbyqxmd.com/read/27428823/opioid-induced-loss-of-local-anesthetic-potency-in-the-rat-sciatic-nerve
#18
Qing Liu, Michael S Gold
BACKGROUND: Previous evidence suggests that opioid-tolerant patients are less responsive to local anesthetics (LAs) for postoperative pain management. METHODS: To determine whether this apparent loss of LA potency is due to an intrinsic change in the peripheral nerve, the effect of systemic morphine was assessed on the potency of lidocaine-induced block of the compound action potential in isolated rat sciatic nerves. Analgesic efficacy was assessed with the heat withdrawal assay...
October 2016: Anesthesiology
https://www.readbyqxmd.com/read/27422406/comparison-of-continuous-femoral-nerve-block-cfnb-sa-and-continuous-femoral-nerve-block-with-mini-dose-spinal-morphine-cfnb-samo-for-postoperative-analgesia-after-total-knee-arthroplasty-tka-a-randomized-controlled-study
#19
Petchara Sundarathiti, Jadesadha Thammasakulsiri, Supawadee Supboon, Supalak Sakdanuwatwong, Molruedee Piangjai
BACKGROUND: Unsatisfactory analgesia for major knee surgery with femoral nerve block (FNB) alone was reported and the additional benefit of sciatic block to continuous femoral nerve block (CFNB) was not conclusive. The aim of the present study was to find the benefit of the additional mini-dose spinal morphine (0.035 mg) to CFNB for postoperative pain control and to compare their associated side effects after total knee arthroplasty (TKA). METHODS: After written informed consent and with Institutional Ethics Committee approval, 68 American Society of Anesthesiologists (ASA) Physical Status I-III patients scheduled for elective unilateral TKA under spinal anesthesia (SA) were included in the present prospective, randomized controlled study...
2016: BMC Anesthesiology
https://www.readbyqxmd.com/read/27352540/-effect-of-corydalis-yanhusuo-and-l-thp-on-gastrointestinal-dopamine-system-in-morphine-dependent-rats
#20
Jing-yu Xu, Wei-feng Bai, Cheng-kai Qiu, Ping Tu, Shou-yang Yu, Su-yuan Luo
OBJECTIVE: To investigate the protective mechanism of Corydalis yanhuso and L-THP in morphine-dependent gastrointestinal injury rats. METHODS: 180 male rats were randomly divided into nine groups, 20 rats for each group: saline group (N), model group (M), NS treatment group and three different dosage of Corydalis yanhusuo and L-THP groups (low dose group,middle dose group and high dose group). The rat CPP (conditioned place preference) model was established by injecting the rats with an increasing dosage of morphine, all groups received CPP training in a black compartments and white ones (drug-paired compartment) for ten days...
December 2015: Zhong Yao Cai, Zhongyaocai, Journal of Chinese Medicinal Materials
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