keyword
MENU ▼
Read by QxMD icon Read
search

endogenous analgesia

keyword
https://www.readbyqxmd.com/read/28530662/pd-l1-inhibits-acute-and-chronic-pain-by-suppressing-nociceptive-neuron-activity-via-pd-1
#1
Gang Chen, Yong Ho Kim, Hui Li, Hao Luo, Da-Lu Liu, Zhi-Jun Zhang, Mark Lay, Wonseok Chang, Yu-Qiu Zhang, Ru-Rong Ji
Programmed cell death ligand-1 (PD-L1) is typically produced by cancer cells and suppresses immunity through the receptor PD-1 expressed on T cells. However, the role of PD-L1 and PD-1 in regulating pain and neuronal function is unclear. Here we report that both melanoma and normal neural tissues including dorsal root ganglion (DRG) produce PD-L1 that can potently inhibit acute and chronic pain. Intraplantar injection of PD-L1 evoked analgesia in naive mice via PD-1, whereas PD-L1 neutralization or PD-1 blockade induced mechanical allodynia...
May 22, 2017: Nature Neuroscience
https://www.readbyqxmd.com/read/28527646/high-dose-amino-acid-administration-achieves-an-anabolic-response-in-type-2-diabetic-patients-that-is-independent-of-glycaemic-control-a-randomized-clinical-trial
#2
Chelsia Gillis, Patricia S Roque, Jürgen Bläss, Albert Urwyler, Harald Schepperle, Guido Kunz, Thomas Peters, Thomas Schricker, Linda Wykes, Andrea Kopp Lugli
BACKGROUND & AIMS: Surgical stress provokes protein catabolism and hyperglycaemia that is enhanced in patients with type 2 diabetes (T2DM), and increases perioperative morbidity. This study hypothesized that perioperative administration of high dose intravenous (IV) amino acids (AA) will augment protein balance in T2DM patients receiving tight plasma glucose control via continuous IV insulin compared to standard plasma glucose control via subcutaneous (SC) insulin sliding scale. METHODS: Eighteen patients with well-controlled T2DM (HbA1C% < 7...
May 3, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28476692/oxytocin-administration-during-spontaneous-labor-guidelines-for-clinical-practice-chapter-7-epidural-analgesia-and-use-of-oxytocin-during-spontaneous-labor
#3
Catherine Fischer
OBJECTIVES: To evaluate the association between epidural analgesia and oxytocin use during spontaneous labor. MATERIAL AND METHODS: A systematic review of the literature via the Medline and Cochrane databases. The key words used for this analysis included oxytocin and epidural. The articles selected related only to spontaneous labor. RESULTS: Based on data reflecting at least in part older practices of epidural analgesia that used high quantities of local anesthetic, studies of the effects of epidural analgesia suggest that those epidural methods had little effect on the first stage of labor but prolonged the second stage and increased the rate of instrumental but not cesarean delivery...
May 2, 2017: J Gynecol Obstet Hum Reprod
https://www.readbyqxmd.com/read/28424989/t-lymphocyte-derived-enkephalins-reduce-th1-th17-colitis-and-associated-pain-in-mice
#4
Lilian Basso, Laure Garnier, Arnaud Bessac, Jérôme Boué, Catherine Blanpied, Nicolas Cenac, Sophie Laffont, Gilles Dietrich
BACKGROUND: Endogenous opioids, including enkephalins, are fundamental regulators of pain. In inflammatory conditions, the local release of opioids by leukocytes at the inflammatory site inhibits nociceptor firing, thereby inducing analgesia. Accordingly, in chronic intestinal Th1/Th17-associated inflammation, enkephalins released by colitogenic CD4(+) T lymphocytes relieve inflammation-induced visceral pain. The present study aims to investigate whether mucosal T-cell-derived enkephalins also exhibit a potent anti-inflammatory activity as described for exogenous opioid drugs in Th1/Th17-associated colitis...
April 19, 2017: Journal of Gastroenterology
https://www.readbyqxmd.com/read/28404687/selective-calcium-dependent-inhibition-of-atp-gated-p2x3-receptors-by-bisphosphonates-induced-endogenous-atp-analogue-apppi
#5
Yevheniia Ishchenko, Anastasia Shakirzyanova, Raisa Giniatullina, Andrei Skorinkin, Geneviev Bart, Petri Turhanen, Jorma Maatta, Jukka Monkkonen, Rashid Giniatullin
Pain is the most unbearable symptom accompanying primary bone cancers and bone metastases. Bone resorptive disorders are often associated with hypercalcemia contributing to the pathological process. Nitrogen-containing bisphosphonates (NBP) are efficiently used to treat bone-cancers and metastases. NBP, apart from their toxic effect on cancer cells, also provide analgesia via poorly understood mechanisms. We have previously shown, that NBP, by inhibiting the mevalonate pathway, induced the formation of the novel ATP-analogues such as ApppI which can potentially be involved in NBP analgesia...
April 12, 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/28395733/optical-control-of-pain-in-vivo-with-a-photoactive-mglu5-receptor-negative-allosteric-modulator
#6
Joan Font, Marc López-Cano, Serena Notartomaso, Pamela Scarselli, Paola Di Pietro, Roger Bresolí-Obach, Giuseppe Battaglia, Fanny Malhaire, Xavier Rovira, Juanlo Catena, Jesús Giraldo, Jean-Philippe Pin, Víctor Fernández-Dueñas, Cyril Goudet, Santi Nonell, Ferdinando Nicoletti, Amadeu Llebaria, Francisco Ciruela
Light-operated drugs constitute a major target in drug discovery, since they may provide spatiotemporal resolution for the treatment of complex diseases (i.e. chronic pain). JF-NP-26 is an inactive photocaged derivative of the metabotropic glutamate type 5 (mGlu5) receptor negative allosteric modulator raseglurant. Violet light illumination of JF-NP-26 induces a photochemical reaction prompting the active-drug's release, which effectively controls mGlu5 receptor activity both in ectopic expressing systems and in striatal primary neurons...
April 11, 2017: ELife
https://www.readbyqxmd.com/read/28393429/lack-of-analgesic-synergy-of-the-cholecystokinin-receptor-antagonist-proglumide-and-spinal-cord-stimulation-for-the-treatment-of-neuropathic-pain-in-rats
#7
Shinsuke Inoue, Lisa M Johanek, Kathleen A Sluka
OBJECTIVE: Neuropathic pain is difficult to manage and treat. Spinal cord stimulation (SCS) has become an established procedure for treating chronic neuropathic pain that is refractory to pharmacological therapy. In order to achieve better analgesia, a number of studies have evaluated the effectiveness of combining drug therapy with SCS. Cholecystokinin antagonists, such as proglumide, enhance the analgesic efficacy of endogenous opioids in animal models of pain. We previously reported that both systemic and spinal administration of proglumide enhances analgesia produced by both low- and high-frequency transcutaneous electrical nerve stimulation (TENS)...
April 10, 2017: Neuromodulation: Journal of the International Neuromodulation Society
https://www.readbyqxmd.com/read/28387464/a-novel-ph-controlled-hydrogen-sulfide-donor-protects-gastric-mucosa-from-aspirin-induced-injury
#8
Chun-Tao Yang, Zhen-Zhen Lai, Ze-Hang Zheng, Jian-Ming Kang, Ming Xian, Rui-Yu Wang, Kun Shi, Fu-Hui Meng, Xiang Li, Li Chen, Hui Zhang
Hydrogen sulphide (H2 S) serves as a vital gastric mucosal defence under acid condition. Non-steroidal anti-inflammatory drugs (NSAIDs) are among widely prescribed medications with effects of antipyresis, analgesia and anti-inflammation. However, their inappropriate use causes gastric lesions and endogenous H2 S deficiency. In this work, we reported the roles of a novel pH-controlled H2 S donor (JK-1) in NSAID-related gastric lesions. We found that JK-1 could release H2 S under mild acidic pH and increase solution pH value...
April 7, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28365372/endogenous-opioid-function-and-responses-to-morphine-the-moderating-effects-of-anger-expressiveness
#9
John W Burns, Stephen Bruehl, Christopher R France, Erik Schuster, Daria Orlowska, Melissa Chont, Rajnish K Gupta, Asokumar Buvanendran
Long-term use of opioid analgesics may be ineffective or associated with significant negative side effects for some people. At present, there is no sound method of identifying optimal opioid candidates. Individuals with chronic low back pain (n = 89) and healthy control individuals (n = 102) underwent ischemic pain induction with placebo, opioid blockade (naloxone), and morphine in counterbalanced order. They completed the Spielberger Anger-Out subscale. Endogenous opioid function × Anger-out × Pain status (chronic pain, healthy control) interactions were tested for morphine responses to ischemic threshold, tolerance, and pain intensity (McGill Sensory and Affective subscales) and side effects...
March 30, 2017: Journal of Pain: Official Journal of the American Pain Society
https://www.readbyqxmd.com/read/28363796/structure-constrained-endomorphin-analogs-display-differential-antinociceptive-mechanisms-in-mice-after-spinal-administration
#10
Yuan Wang, Jingjing Zhou, Xin Liu, Long Zhao, Zhaojuan Wang, Xianghui Zhang, Kezhou Wang, Linqing Wang, Rui Wang
We previously reported a series of novel endomorphin analogs with unnatural amino acid modifications. These analogs display good binding affinity and functional activity toward the μ opioid receptor (MOP). In the present study, we further investigated the spinal antinociceptive activity of these compounds. The analogs were potent in several nociceptive models. Opioid antagonists and antibodies against several endogenous opioid peptides were used to determine the mechanisms of action of these peptides. Intrathecal pretreatment with naloxone and β-funaltrexamine (β-FNA) effectively inhibited analog-induced analgesia, demonstrating that activity of the analogs is regulated primarily through MOP...
May 2017: Peptides
https://www.readbyqxmd.com/read/28360106/ca-2-and-calpain-mediate-capsaicin-induced-ablation-of-axonal-terminals-expressing-transient-receptor-potential-vanilloid-1
#11
Sheng Wang, Sen Wang, Jamila Asgar, John Joseph, Jin Y Ro, Feng Wei, James N Campbell, Man-Kyo Chung
Capsaicin is an ingredient in spicy peppers that produces burning pain by activating transient receptor potential vanilloid 1 (TRPV1), a Ca(2+)-permeable ion channel in nociceptors. Capsaicin has also been used as an analgesic, and its topical administration is approved for the treatment of certain pain conditions. The mechanisms underlying capsaicin-induced analgesia likely involve reversible ablation of nociceptor terminals. However, the mechanisms underlying these effects are not well understood. To visualize TRPV1-lineage axons, a genetically engineered mouse model was used in which a fluorophore is expressed under the TRPV1 promoter...
May 19, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28356897/novel-molecular-strategies-and-targets-for-opioid-drug-discovery-for-the-treatment-of-chronic-pain
#12
REVIEW
Keith M Olson, Wei Lei, Attila Keresztes, Justin LaVigne, John M Streicher
Opioid drugs like morphine and fentanyl are the gold standard for treating moderate to severe acute and chronic pain. However, opioid drug use can be limited by serious side effects, including constipation, tolerance, respiratory suppression, and addiction. For more than 100 years, we have tried to develop opioids that decrease or eliminate these liabilities, with little success. Recent advances in understanding opioid receptor signal transduction have suggested new possibilities to activate the opioid receptors to cause analgesia, while reducing or eliminating unwanted side effects...
March 2017: Yale Journal of Biology and Medicine
https://www.readbyqxmd.com/read/28341345/the-signaling-signature-of-the-neurotensin-type-1-receptor-with-endogenous-ligands
#13
Élie Besserer-Offroy, Rebecca L Brouillette, Sandrine Lavenus, Ulrike Froehlich, Andrea Brumwell, Alexandre Murza, Jean-Michel Longpré, Éric Marsault, Michel Grandbois, Philippe Sarret, Richard Leduc
The human neurotensin 1 receptor (hNTS1) is a G protein-coupled receptor involved in many physiological functions, including analgesia, hypothermia, and hypotension. To gain a better understanding of which signaling pathways or combination of pathways are linked to NTS1 activation and function, we investigated the ability of activated hNTS1, which was stably expressed by CHO-K1 cells, to directly engage G proteins, activate second messenger cascades and recruit β-arrestins. Using BRET-based biosensors, we found that neurotensin (NT), NT(8-13) and neuromedin N (NN) activated the Gαq-, Gαi1-, GαoA-, and Gα13-protein signaling pathways as well as the recruitment of β-arrestins 1 and 2...
March 22, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28339438/the-role-of-autonomic-function-in-exercise-induced-endogenous-analgesia-a-case-control-study-in-myalgic-encephalomyelitis-chronic-fatigue-syndrome-and-healthy-people
#14
Jessica Van Oosterwijck, Uros Marusic, Inge De Wandele, Lorna Paul, Mira Meeus, Greta Moorkens, Luc Lambrecht, Lieven Danneels, Jo Nijs
BACKGROUND: Patients with myalgic encephalomyelitis / chronic fatigue syndrome (ME/CFS) are unable to activate brain-orchestrated endogenous analgesia (or descending inhibition) in response to exercise. This physiological impairment is currently regarded as one factor explaining post-exertional malaise in these patients. Autonomic dysfunction is also a feature of ME/CFS. OBJECTIVES: This study aims to examine the role of the autonomic nervous system in exercise-induced analgesia in healthy people and those with ME/CFS, by studying the recovery of autonomic parameters following aerobic exercise and the relation to changes in self-reported pain intensity...
March 2017: Pain Physician
https://www.readbyqxmd.com/read/28337942/is-fetal-analgesia-necessary-during-prenatal-surgery
#15
C V Bellieni, S Vannuccini, F Petraglia
Fetal anesthesia is still matter of debate: some authors hypothesize that several intrauterine endogenous neuroinhibitors (ENIn) anesthetize the fetus, keeping it in a constant state of sleep, and making pharmacological fetal anaesthesia useless for fetal surgery. AIM: To retrieve evidences about fetal pain, fetal arousability and about the level of sedation induced by the ENIn, in order to assess the necessity of direct fetal anesthesia during prenatal fetal surgery. METHODS: We performed a careful literature review (1990-2016) on fetal arousability, and on the possibility that ENIn at the average fetal blood levels induce actual anesthesia...
March 24, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28322978/delta-opioid-receptor-antagonism-leads-to-excessive-ethanol-consumption-in-mice-with-enhanced-activity-of-the-endogenous-opioid-system
#16
Piotr Poznanski, Anna Lesniak, Michal Korostynski, Klaudia Szklarczyk, Marzena Lazarczyk, Piotr Religa, Magdalena Bujalska-Zadrozny, Bogdan Sadowski, Mariusz Sacharczuk
The opioid system modulates the central reinforcing effects of ethanol and participates in the etiology of addiction. However, the pharmacotherapy of ethanol dependence targeted on the opioid system is little effective and varies due to individual patients' sensitivity. In the present study, we used two mouse lines with high (HA) and low (LA) activity of the endogenous opioid system to analyze the effect of opioid receptor blockade on ethanol drinking behavior. We found that LA and HA lines characterized by divergent magnitudes of swim stress-induced analgesia also differ in ethanol intake and preference...
May 15, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28284950/naloxone-exacerbates-memory-impairments-and-depressive-like-behavior-after-mild-traumatic-brain-injury-mtbi-in-mice-with-upregulated-opioid-system-activity
#17
Anna Lesniak, Pawel Leszczynski, Magdalena Bujalska-Zadrozny, Chaim G Pick, Mariusz Sacharczuk
The neuroprotective role of the endogenous opioid system in the pathophysiological sequelae of brain injury remains largely ambiguous. Noteworthy, almost no data is available on how its genetically determined activity influences the outcome of mild traumatic brain injury. Thus, the aim of our study was to examine the effect of opioid receptor blockage on cognitive impairments produced by mild traumatic brain injury in mice selectively bred for high (HA) and low (LA) swim-stress induced analgesia that show innate divergence in opioid system activity...
March 8, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28279705/lower-placebo-responses-after-long-term-exposure-to-fibromyalgia-pain
#18
Eva Kosek, Annelie Rosen, Serena Carville, Ernest Choy, Richard H Gracely, Hanke Marcus, Frank Petzke, Martin Ingvar, Karin B Jensen
Knowledge about placebo mechanisms in patients with chronic pain is scarce. Fibromyalgia syndrome (FM) is associated with dysfunctions of central pain inhibition, and since placebo analgesia entails activation of endogenous pain inhibition, we hypothesized that long-term exposure to FM pain would negatively affect placebo responses. Here we examined the placebo-group (n=37, mean age 45 years) from a 12-week, randomized, double-blind, placebo-controlled trial investigating the effects of milnacipran or placebo...
March 6, 2017: Journal of Pain: Official Journal of the American Pain Society
https://www.readbyqxmd.com/read/28235500/action-of-%C3%AE-endorphin-and-nonsteroidal-anti-inflammatory-drugs-and-the-possible-effects-of-nonsteroidal-anti-inflammatory-drugs-on-%C3%AE-endorphin
#19
REVIEW
Yuan-Hang Luan, Di Wang, Qi Yu, Xiao-Qing Chai
This study aimed to review research on the effects of nonsteroidal anti-inflammatory drugs (NSAIDs) on β-endorphin. NSAIDs are commonly used as anti-inflammatory and analgesic drugs. They are well known for inducing peripheral analgesia by inhibiting cyclooxygenase (COX). However, an increasing number of studies have shown that NSAIDs have an analgesic effect not only in the periphery but also at the center. It means that a central analgesic mechanism of the action of NSAIDs exists besides the peripheral mechanism, and the central mechanism likely involves β-endorphin...
February 2017: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/28169487/endogenous-analgesic-effect-of-pregabalin-a-double-blind-and-randomized-controlled-trial
#20
S Sugimine, S Saito, T Araki, K Yamamoto, H Obata
BACKGROUND: Conditioned pain modulation (CPM) is widely used to measure endogenous analgesia, and a recent study indicated that drugs that act on endogenous analgesia are more effective in individuals with lower CPM. Recent animal studies have indicated that pregabalin activates endogenous analgesia by stimulating the descending pain inhibitory system. The present study examined whether the analgesic effect of pregabalin is greater in individuals with lower original endogenous analgesia using CPM...
February 7, 2017: European Journal of Pain: EJP
keyword
keyword
86046
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"