keyword
MENU ▼
Read by QxMD icon Read
search

Antagonist

keyword
https://www.readbyqxmd.com/read/28340290/nucleus-accumbens-dopamine-receptors-mediate-hypothalamus-induced-antinociception-in-the-rat-formalin-test
#1
A Siahposht-Khachaki, P Pourreza, S Ezzatpanah, A Haghparast
BACKGROUND: Lateral hypothalamus (LH) involves in modulation of tonic pain. Regarding the direct and indirect neural connections between the LH and nucleus accumbens (NAc), we aimed to examine the pain modulatory role of NAc dopamine receptors in modulation of LH-induced analgesia in the formalin test. METHODS: Vehicle-control groups received saline or DMSO into the NAc and saline into the LH. Carbachol-control groups received carbachol (250 nmol/L) into the LH, 5 min after saline or DMSO injection into the NAc...
March 24, 2017: European Journal of Pain: EJP
https://www.readbyqxmd.com/read/28339742/topiramate-modulates-post-infarction-inflammation-primarily-by-targeting-monocytes-or-macrophages
#2
Zhaohui Wang, Shiyuan Huang, Yuling Sheng, Xu Peng, Hui Liu, Nan Jin, Jun Cai, Yanwen Shu, Ting Li, Ping Li, Cheng Fan, Xiaofan Hu, Wenyong Zhang, Rui Long, Ya You, Caihong Huang, Yi Song, Chunhua Xiang, Jue Wang, Yong Yang, Kun Liu
Aims: Monocytes/macrophages response plays a key role in post-infarction inflammation that contributes greatly to post-infarction ventricular remodeling and cardiac rupture. Therapeutic targeting of the GABAA receptor, which is enriched in monocytes/macrophages but not expressed in the myocardium, may be possible after myocardial infarction. Methods and results: After MI was induced by ligation of the coronary artery, C57BL/6 mice were intraperitoneally administered with one specific agonist or antagonist of the GABAA receptor (topiramate or bicuculline), in the setting of presence or depletion of monocytes/macrophages...
February 17, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28339619/relationship-of-neuropeptide-ff-receptors-with-pubertal-maturation-of-gilts%C3%A2
#3
Jennifer F Thorson, Neely L Heidorn, Vitaly Ryu, Krzysztof Czaja, Danny J Nonneman, C Richard Barb, Gary J Hausman, Gary A Rohrer, Ligia D Prezotto, Richard B McCosh, Elane C Wright, Brett R White, Bradley A Freking, William T Oliver, Stanley M Hileman, Clay A Lents
Mechanisms governing the timing of puberty in pigs are poorly understood. A genome-wide association study for age at first estrus in pigs identified candidate genes including neuropeptide FF receptor 2 (NPFFR2), which is a putative receptor for RFamide-related peptides (RFRP). RFRP has been shown to negatively regulate secretion of reproductive hormones from hypothalamic and pituitary tissue of pigs in culture. Here, the porcine NPFFR2 gene was further screened and four potentially functional variants were identified to be associated with age at first estrus in pigs (1,288 gilts)...
January 28, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/28339575/histaminergic-neurotransmission-as-a-gateway-for-the-cognitive-effect-of-oleoylethanolamide-in-contextual-fear-conditioning
#4
Gustavo Provensi, Roberta Fabbri, Leonardo Munari, Alessia Costa, Elisabetta Baldi, Corrado Bucherelli, Patrizio Blandina, Maria Beatrice Passani
Background: The integrity of the brain histaminergic system is necessary for the unfolding of homeostatic and cognitive processes through the recruitment of alternative circuits with distinct temporal patterns. We recently demonstrated that the fat-sensing lipid mediator oleoylethanolamide indirectly activates histaminergic neurons to exerts its hypophagic effects. The present experiments investigated whether histaminergic neurotransmission is necessary also for the modulation of emotional memory induced by oleoylethanolamide in a contextual fear conditioning paradigm...
January 19, 2017: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28339431/perioperative-ketamine-administration-for-thoracotomy-pain
#5
Daniel W Moyse, Alan D Kaye, James H Diaz, Muhammad Y Qadri, David Lindsay, Srinivas Pyati
BACKGROUND: Of all the postsurgical pain conditions, thoracotomy pain poses a particular therapeutic challenge in terms of its prevalence, severity, and ensuing postoperative morbidity. Multiple pain generators contribute to the severity of post-thoracotomy pain, and therefore a multimodal analgesic therapy is considered to be a necessary strategy. Along with opioids, thoracic epidural analgesia, and paravertebral blocks, N-Methyl-D-Aspartate (NMDA) receptor antagonists such as ketamine have been used as adjuvants to improve analgesia...
March 2017: Pain Physician
https://www.readbyqxmd.com/read/28339391/topical-ketamine-10-for-neuropathic-pain-in-spinal-cord-injury-patients-an-open-label-trial
#6
Joseph Rabi, Joshua Minori, Hasan Abad, Ray Lee, Michelle Gittler
Topical ketamine, an N-methyl-D-aspartate antagonist, has been shown to be effective in certain neuropathic pain syndromes. The objective of this study was to determine the efficacy of topical ketamine in spinal cord injury patients with neuropathic pain. An open label trial enrolled five subjects at an outpatient rehabilitation hospital with traumatic spinal cord injuries who had neuropathic pain at or below the level of injury. Subjects applied topical ketamine 10% three times a day for a two-week duration...
November 2016: International Journal of Pharmaceutical Compounding
https://www.readbyqxmd.com/read/28339199/structure-based-discovery-of-new-antagonist-and-biased-agonist-chemotypes-for-the-kappa-opioid-receptor
#7
Zhong Zheng, Xi-Ping Huang, Thomas J Mangano, Rodger Zou, Xin Chen, Saheem Zaidi, Bryan L Roth, Raymond C Stevens, Vsevolod Katritch
The ongoing epidemics of opioid overdose raises an urgent need for effective anti-addiction therapies and addiction-free painkillers. The κ-opioid receptor (KOR) has emerged as a promising target for both indications, raising demand for new chemotypes of KOR antagonists, as well as G-protein-biased agonists. We employed the crystal structure of the KOR-JDTic complex and ligand-optimized structural templates to perform virtual screening of available compound libraries for new KOR ligands. The prospective virtual screening campaign yielded a high 32% hit rate, identifying novel fragment-like and lead-like chemotypes of KOR ligands...
March 24, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28335544/combination-effect-of-antituberculosis-drugs-and-ethanolic-extract-of-selected-medicinal-plants-against-multi-drug-resistant-mycobacterium-tuberculosis-isolates
#8
Prabasiwi Nur Fauziyah, Elin Yulinah Sukandar, Dhyan Kusuma Ayuningtyas
Adverse drug reaction and resistance to antituberculosis drugs remain the causes of tuberculosis therapeutic failure. This research aimed to find the combination effect of standard antituberculosis drugs with Hibiscus sabdariffa L., Kaempferia galanga L., and Piper crocatum N.E. Br against multi-drug resistant (MDR) Mycobacterium tuberculosis isolates. Two MDR strains (i.e., isoniazid/ethambutol resistant and rifampicin/streptomycin resistant) of M. tuberculosis were inoculated in Löwenstein-Jensen medium containing a combination of standard antituberculosis drugs and ethanolic extracts of H...
March 20, 2017: Scientia Pharmaceutica
https://www.readbyqxmd.com/read/28335379/the-role-of-adenosine-signaling-in-headache-a-review
#9
REVIEW
Nathan T Fried, Melanie B Elliott, Michael L Oshinsky
Migraine is the third most prevalent disease on the planet, yet our understanding of its mechanisms and pathophysiology is surprisingly incomplete. Recent studies have built upon decades of evidence that adenosine, a purine nucleoside that can act as a neuromodulator, is involved in pain transmission and sensitization. Clinical evidence and rodent studies have suggested that adenosine signaling also plays a critical role in migraine headache. This is further supported by the widespread use of caffeine, an adenosine receptor antagonist, in several headache treatments...
March 13, 2017: Brain Sciences
https://www.readbyqxmd.com/read/28334727/discovering-the-relative-efficacy-of-inhaled-medications-for-chronic-obstructive-pulmonary-disease-multiple-treatment-comparisons
#10
Ying Zhu, Tong Zhang, Haiyan Li, Yang Yang, Qiong Chen, Lei Kong, Bo Tai
BACKGROUND: Chronic obstructive pulmonary disease (COPD) is managed by three major classes of inhaled medications: inhaled corticosteroids (ICS), long-acting Beta 2-agonist (LABA), long-acting muscarinic antagonist (LAMA). Single inhaled medication is usually replaced by combined inhaled medications for efficacy enhancement. However, this practice should be supported by clinical evidence for large-scale implementations. METHODS: The relative efficacy of inhaled medications is determined by three endpoints: changes in the trough forced expiratory volume in 1 second (tFEV1), changes in the St George's Respiratory Questionnaire (SGRQ) score and the proportion of SGRQ responders which represents a reduction in SGRQ total score at week 24 of ≥4...
March 27, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28334166/grk5-regulates-social-behavior-via-suppression-of-mtorc1-signaling-in-medial-prefrontal-cortex
#11
Bing Niu, Peipei Liu, Minjie Shen, Cao Liu, Li Wang, Feifei Wang, Lan Ma
Impairments in social behaviors are features of a number of psychiatric diseases associated with subtle alterations in the medial prefrontal cortex (mPFC) circuitry. G protein-coupled receptor kinase (GRK) 5 is widely expressing in the cortex, however, its role in regulation of the mPFC activity and the development of social behaviors and psychiatric disorders is unclear. Here, we found that GRK5 dificiency in mice caused social behavior impairments. Further morphological, electrophysiological, and biochemical analyses showed abnormal postsynaptic ultrastructure, impaired excitatory synaptic transmission, the increased association of raptor with mTOR, and overactivated mTORC1-S6K signaling in the mPFC of Grk5-/- mice...
February 27, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/28333874/successful-treatment-of-autoimmune-disease-associated-pyoderma-gangrenosum-with-the-il-1-receptor-antagonist-anakinra-a-case-series-of-3-patients
#12
Celia Beynon, Mei Fong Chin, Prasad Hunasehally, Krishnan Bhagwandas, Martin Bevan, Marisa Taylor, Thomas Lawson
No abstract text is available yet for this article.
April 2017: Journal of Clinical Rheumatology: Practical Reports on Rheumatic & Musculoskeletal Diseases
https://www.readbyqxmd.com/read/28333866/prevention-of-gastrointestinal-side-effects-in-paediatric-oncology-what-are-the-guidelines
#13
Karis K F Cheng
PURPOSE OF REVIEW: Gastrointestinal side-effects, particularly with regard to alimentary tract mucositis and chemotherapy-induced nausea and vomiting (CINV), continue to be frequent and debilitating symptomatic conditions among children and adolescents receiving cytotoxic cancer therapy. Further avenues of progress for mucositis and CINV prevention in paediatric oncology setting are warranted. RECENT FINDINGS: The current article reviews the major guidelines and literature published in 2016 pertaining to the prevention of mucositis and CINV...
March 22, 2017: Current Opinion in Supportive and Palliative Care
https://www.readbyqxmd.com/read/28333755/treatment-persistence-for-infliximab-versus-adalimumab-in-crohn-s-disease-a-14-year-single-center-experience
#14
Pablo Olivera, Linda Thiriet, Amandine Luc, Cedric Baumann, Silvio Danese, Laurent Peyrin-Biroulet
BACKGROUND: Infliximab (IFX) and adalimumab (ADA) are widely used in the treatment of patients with Crohn's disease (CD). There are few published data on the treatment persistence of IFX and ADA in patients with CD. METHODS: We aimed to compare the persistence rates of IFX versus ADA as first- and second-line tumor necrosis factor antagonist (anti-TNF), to identify factors potentially associated with persistence, and to evaluate reasons for treatment withdrawal in CD patients...
March 16, 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28333660/low-dose-naltrexone-a-new-therapy-option-for-complex-regional-pain-syndrome-type-i-patients
#15
Kayla M Sturn, Michael Collin
Naltrexone (an opioid antagonist) has long been used in patients overcoming alcohol and opioid dependency. However, at doses one-tenth of those commonly prescribed for the above conditions, an unexpected effect occurs that aids in alleviating pain. Although there are currently no randomized clinical trials supporting the use of low-dose naltrexone, we present a case study describing the impact of compounding low-dose naltrexone that has dramatically improved the patient's pain symptoms which were refractory to other treatments...
May 2016: International Journal of Pharmaceutical Compounding
https://www.readbyqxmd.com/read/28333314/characterization-of-e-type-colicinogenic-plasmids-from-shigella-sonnei
#16
Fatema Calcuttawala, Chellaram Hariharan, Gururaja P Pazhani, Dhira Rani Saha, Thandavarayan Ramamurthy
Colicinogenic plasmids encode toxic proteins which have antagonistic activity against closely related bacteria. This study describes the molecular characterization of three colicinogenic plasmids designated as pSSE3, pSSE and pSSE2, each with a molecular size of ∼6 kb, identified in clinical isolates of S. sonnei. Sequence analysis revealed that pSSE and pSSE2 shared extensive sequence homology with each other and with Escherichia coli E-type colicinogenic plasmids. The plasmid pSSE3 lacked an additional gene imparting immunity to colicin E8, a unique feature not observed in any of the previously reported sequences of colicin E3 plasmids...
March 15, 2017: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/28333288/exposure-efficacy-relationships-for-vedolizumab-induction-therapy-in-patients-with-ulcerative-colitis-or-crohn-s-disease
#17
Maria Rosario, Jonathan L French, Nathanael L Dirks, Serap Sankoh, Asit Parikh, Huyuan Yang, Silvio Danese, Jean-Frédéric Colombel, Michael Smyth, William J Sandborn, Brian G Feagan, Walter Reinisch, Bruce E Sands, Miguel Sans, Irving Fox
Background and Aims: A positive relationship between vedolizumab trough serum concentrations and clinical outcomes in patients with ulcerative colitis (UC) or Crohn's disease (CD) has been reported. Here we further explore exposure-efficacy relationships for vedolizumab induction therapy in post hoc analyses of GEMINI study data. Methods: Vedolizumab trough concentrations at Week 6 or 10 were grouped in quartiles and clinical outcome rates calculated. Exposure-efficacy relationships at Week 6 and potential baseline covariate effects were explored using logistic regression and individual predicted cumulative average concentration through Week 6 (Caverage) as exposure measure...
February 17, 2017: Journal of Crohn's & Colitis
https://www.readbyqxmd.com/read/28333280/hcg-activates-the-erk1-2-mitogen-activated-protein-kinase-pathway-in-human-endometrial-stromal-cells-transiently-increasing-the-progesterone-receptor-and-regulating-genes-associated-with-endometrial-receptivity
#18
Alejandro Tapia-Pizarro, Sebastián Archiles, Felipe Argandoña, Cecilia Valencia, Keyla Zavaleta, María Cecilia Johnson, Reinaldo González-Ramos, Luigi Devoto
STUDY QUESTION: How does hCG signal in human endometrial stromal cells (ESCs) and what is its role in regulating ESC function? SUMMARY ANSWER: CG signaling in ESCs activates the extracellular signal-regulated protein kinases 1 and 2 (Erk1/2) pathway through exchange protein activated by cAMP (Epac) and transiently increases progesterone receptor (PR) transcript and protein expression and its transcriptional function. WHAT IS KNOWN ALREADY: hCG is one of the earliest embryo-derived secreted signals in the endometrium, which abundantly expresses LH/hCG receptors...
March 14, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28333025/high-progesterone-levels-in-the-beginning-of-icsi-antagonist-cycles-and-clinical-pregnancy-still-a-concern
#19
Tatiana R Panaino, Joyce B da Silva, Maria Augusta T de Lima, Paloma Lira, Patricia C Arêas, Ana Cristina A Mancebo, Marcelo M de Souza, Roberto A Antunes, Maria do Carmo B de Souza
OBJECTIVE: In controlled ovarian hyperstimulation (COH) using antagonist cycles, an incomplete luteolysis could happen after an inefficient previous luteolysis. Since antagonist cycles are frequent today, this study aims to access the impact of serum progesterone in the beginning and at the end of stimulation, and pregnancy outcomes. METHODS: single-center cohort study, 461 fresh embryo transfers in ICSI antagonist cycles. Serum progesterone levels was measured in the beginning of COH (P4i) and on hCG day (P4f) using threshold values of 1...
February 1, 2017: JBRA Assisted Reproduction
https://www.readbyqxmd.com/read/28332577/absence-of-role-of-dietary-protein-sensing-in-the-metabolic-benefits-of-duodenal-jejunal-bypass-in-the-mouse
#20
Aude Barataud, Daisy Goncalves, Jennifer Vinera, Carine Zitoun, Adeline Duchampt, Amandine Gautier-Stein, Gilles Mithieux
Roux-en-Y gastric bypass (RYGB) induces remission or substantial improvement of type 2 diabetes mellitus (T2D) but underlying mechanisms are still unclear. The beneficial effects of dietary proteins on energy and glucose homeostasis are mediated by the antagonist effects of peptides toward mu-opioid receptors (MORs), which are highly expressed in the distal gut. We hypothesized that the beneficial effects of RYGB could depend at least in part on the interaction of peptides from food with intestinal MORs. Duodenal-jejunal bypass (DJB) was performed in obese and lean wild-type (WT) or MOR deficient (MOR(-/-)) mice...
March 23, 2017: Scientific Reports
keyword
keyword
847
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"