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https://www.readbyqxmd.com/read/29372573/endoscopic-ultrasound-for-rectal-cancer-staging-a-population-based-study-of-utilization-impact-on-treatment-patterns-and-survival
#1
Philip N Okafor, Kristi Swanson, Nilay Shah, Jayant A Talwalkar
BACKGROUND AND AIM: Optimal rectal cancer (RC) outcomes depend on accurate locoregional staging. We sought to describe the impact of endoscopic ultrasound (EUS) on RC treatment patterns and survival. METHODS: Using the Surveillance, Epidemiology, and End Results-Medicare database, we identified patients with RC between 2005 and 2007. We excluded patients with stage IV disease, those not enrolled in Medicare parts A and B, those enrolled in managed care, and those staged with PMRI (because of low numbers)...
January 26, 2018: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/29369452/accuracy-of-computed-tomography-in-diagnosis-of-intra-abdominal-injuries-in-stable-patients-with-anterior-abdominal-stab-wounds-a-systematic-review-and-meta-analysis
#2
Bonny J Baron, Roshanak Benabbas, Casey Kohler, Carina Biggs, Valery Roudnitsky, Lorenzo Paladino, Richard Sinert
BACKGROUND: Work-up for patients presenting to the Emergency Department (ED) following an anterior abdominal stab wound (AASW) has been debated since the 1960s. Experts agree that patients with peritonitis, evisceration, or hemodynamic instability should undergo immediate laparotomy (LAP), however, workup of stable, asymptomatic or non-peritoneal, patients is not clearly defined. OBJECTIVES: To evaluate the accuracy of computed tomography of abdomen and pelvis (CTAP) for diagnosis of intra-abdominal injuries requiring Therapeutic Laparotomy (THER-LAP) in ED patients with AASW...
January 25, 2018: Academic Emergency Medicine: Official Journal of the Society for Academic Emergency Medicine
https://www.readbyqxmd.com/read/29331800/nucleus-accumbens-mu-opioid-receptors-regulate-context-specific-social-preferences-in-the-juvenile-rat
#3
Caroline J W Smith, Kevin B Wilkins, Sara Li, Maxwell T Tulimieri, Alexa H Veenema
The μ opioid receptor (MOR) in the nucleus accumbens (NAc) is involved in assigning pleasurable, or hedonic value to rewarding stimuli. Importantly, the hedonic value of a given rewarding stimulus likely depends on an individual's current motivational state. Here, we examined the involvement of MORs in the motivation to interact with a novel or a familiar (cage mate) conspecific in juvenile rats. First, we demonstrated that the selective MOR antagonist CTAP administered into the NAc reduces social novelty preference of juvenile males, by decreasing the interaction time with the novel conspecific and increasing the interaction time with the cage mate...
December 30, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29119401/role-of-endogenous-agonists-of-opioid-receptors-in-the-regulation-of-heart-resistance-to-postischemic-reperfusion-injury
#4
A S Gorbunov, O E Vaizova, M V Belousov, S V Pozdnyakova, E A Nesterov, P G Madonov
Intravenous injection of nonselective antagonists of opioid receptors (OR) naltrexone (5 mg/kg) and naloxone methiodide (5 mg/kg), selective δ1-OR antagonist BNTX (0.7 mg/kg), selective δ2-OR blocker naltriben (0.3 mg/kg), selective κ-OR antagonist norbinaltorphimine (2 mg/kg), and selective blocker of ORL1 opioid receptors JTC-801 (0.1 mg/kg) produced no effect on reperfusion injury to the heart in rats narcotized with α-chloralose. In contrast, selective μ-OR antagonist CTAP (1 mg/kg) limited the infarct size, although this effect was not observed at a lower CTAP concentration of 0...
November 9, 2017: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/29042318/mechanisms-of-%C3%AE-opioid-receptor-inhibition-of-nmda-receptor-induced-substance-p-release-in-the-rat-spinal-cord
#5
Wenling Chen, Helena S Ennes, James A McRoberts, Juan Carlos Marvizón
The interaction between NMDA receptors and μ-opioid receptors in primary afferent terminals was studied by using NMDA to induce substance P release, measured as neurokinin 1 receptor internalization. In rat spinal cord slices, the μ-opioid receptor agonists morphine, DAMGO and endomorphin-2 inhibited NMDA-induced substance P release, whereas the antagonist CTAP right-shifted the concentration response of DAMGO. In vivo, substance P release induced by intrathecal NMDA after priming with BDNF was inhibited by DAMGO...
October 16, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28981444/central-mediators-of-the-zymosan-induced-febrile-response
#6
Amanda Leite Bastos-Pereira, Daniel Fraga, Arturo Alejandro Dreifuss, Aleksander Roberto Zampronio
BACKGROUND: Zymosan is a fungal cell wall protein-carbohydrate complex that is known to activate inflammatory pathways through the Toll-like receptors and is commonly used to induce fever. Nevertheless, the central mediators that are involved in the zymosan-induced febrile response are only partially known. METHODS: The present study evaluated the participation of prostaglandins, substance P, endothelin-1 (ET-1), and endogenous opioids (eOPs) in the zymosan-induced febrile response by using inhibitors and antagonists in male Wistar rats...
November 27, 2017: Journal of Basic and Clinical Physiology and Pharmacology
https://www.readbyqxmd.com/read/28951361/-%C3%A2%C2%B5-opioid-receptors-in-the-central-nucleus-of-the-amygdala-mediate-sodium-intake-in-rats
#7
Jun-Bao Yan, Zhi-Hong Hu
OBJECTIVE: To investigate the opioidergic mechanism of the central nucleus of the amygdala (CeA) for regulating sodium appetite in rats. METHDOS: Using the elaborate invasive cerebral cannulation and brain microinjection method, we observed the effects of bilateral intra-CeA injections of DAMGO (a selective µ-opioid receptor agonist) and CTAP (a highly selective µ-opioid receptor antagonist), either alone or in combination, on NaCl solution (0.3 mol/L) and water intake by rats in different models of Na(+) ingestion...
September 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/28930944/negative-ct-can-safely-rule-out-clinically-significant-intra-abdominal-injury-in-the-asymptomatic-patient-after-blunt-trauma-prospective-evaluation-of-1193-patients
#8
Elizabeth Benjamin, Jayun Cho, Gustavo Recinos, Evren Dilektasli, Lydia Lam, John Brunner, Kenji Inaba, Demetrios Demetriades
BACKGROUND: Computed tomography of the abdomen and pelvis (CTAP) is highly specific for injury identification and commonly used in the evaluation of blunt trauma patients. Despite this, there is no consensus on the required clinical observation period after negative imaging, often impacting patient flow and hospital cost. The purpose of this study was to evaluate the use of CTAP after blunt trauma and the need for observation following negative imaging. METHODS: A prospective analysis at a large level I trauma center was conducted from 11/2014-5/2015...
September 20, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28890415/performance-of-ct-scan-of-abdomen-and-pelvis-in-detecting-asymptomatic-synchronous-metastasis-in-breast-cancer
#9
Justin James, Melanie Teo, Vivekananda Ramachandran, Michael Law, David Stoney, Michael Cheng
BACKGROUND: In many centres in Australia, CT scan of abdomen and pelvis (CTAP) is a commonly used staging investigation to detect asymptomatic synchronous metastasis (ASM) in newly diagnosed breast cancer. However, its routine use is not supported by strong evidence either on its cost effectiveness or on specificity. Despite contrary recommendations by international guidelines this staging investigation is widely used among new early breast cancers(EBC). This retrospective study aims to assess the cost effectiveness and usefulness of CTAP in new breast cancers...
October 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28730482/cell-specific-labeling-for-analyzing-bidirectional-signaling-by-mass-spectrometry
#10
Christopher J Tape, Claus Jørgensen
Cell-specific proteome labeling enables global proteome-wide analysis of cell signaling in heterotypic co-cultures. Such approaches have provided unique insight in contact-initiated receptor tyrosine kinase signaling, transfer of proteomic material between heterotypic cells, and interactions between normal and oncogenic cells. Here we describe current methods for cell-specific labeling of heterotypic cells with isotopic labeled amino acids (e.g., SILAC and CTAP). We outline the advantages and disadvantages of individual approaches, describe typical experimental scenarios, and discuss where each experimental approach is optimally applied...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28645621/two-delta-opioid-receptor-subtypes-are-functional-in-single-ventral-tegmental-area-neurons-and-can-interact-with-the-mu-opioid-receptor
#11
Elyssa B Margolis, Wakako Fujita, Lakshmi A Devi, Howard L Fields
The mu and delta opioid receptors (MOR and DOR) are highly homologous members of the opioid family of GPCRs. There is evidence that MOR and DOR interact, however the extent to which these interactions occur in vivo and affect synaptic function is unknown. There are two stable DOR subtypes: DPDPE sensitive (DOR1) and deltorphin II sensitive (DOR2); both agonists are blocked by DOR selective antagonists. Robust motivational effects are produced by local actions of both MOR and DOR ligands in the ventral tegmental area (VTA)...
September 1, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28597031/the-prevalence-of-incidental-findings-on-computed-tomography-of-the-abdomen-pelvis-in-pediatric-trauma-patients
#12
C Onwubiko, D P Mooney
PURPOSE: Computed tomography scans of the abdomen/pelvis (CTAP) in the adult population may reveal findings unrelated to the injury, such as a mass; the occurrence of incidental findings in pediatric patients remains unknown. This study aims to determine the percentage of pediatric trauma patients with incidental findings. METHODS: Data regarding consecutive 250 patients who underwent CTAP during their evaluation were retrieved from our level 1 pediatric trauma center trauma registry...
June 8, 2017: European Journal of Trauma and Emergency Surgery: Official Publication of the European Trauma Society
https://www.readbyqxmd.com/read/28590304/antinociceptive-effect-of-epicatechin-in-inflammatory-and-neuropathic-pain-in-rats
#13
Geovanna N Quiñonez-Bastidas, Jorge B Pineda-Farias, Francisco J Flores-Murrieta, Juan Rodríguez-Silverio, Juan G Reyes-García, Beatriz Godínez-Chaparro, Vinicio Granados-Soto, Héctor I Rocha-González
The aim of this study was to investigate the antinociceptive potential of (-)-epicatechin and the possible mechanisms of action involved in its antinociceptive effect. The carrageenan and formalin tests were used as inflammatory pain models. A plethysmometer was used to measure inflammation and L5/L6 spinal nerve ligation as a neuropathic pain model. Oral (-)-epicatechin reduced carrageenan-induced inflammation and nociception by about 59 and 73%, respectively, and reduced formalin- induced and nerve injury-induced nociception by about 86 and 43%, respectively...
June 5, 2017: Behavioural Pharmacology
https://www.readbyqxmd.com/read/28559159/hdac-inhibitor-tsa-ameliorates-mechanical-hypersensitivity-and-potentiates-analgesic-effect-of-morphine-in-a-rat-model-of-bone-cancer-pain-by-restoring-%C3%AE-opioid-receptor-in-spinal-cord
#14
Xinran Hou, Yingqi Weng, Bihan Ouyang, Zhuofeng Ding, Zongbin Song, Wangyuan Zou, Changsheng Huang, Qulian Guo
Bone cancer pain (BCP) is a common complication with inadequate management in patients suffering from advanced cancer. Histone deacetylase inhibitors showed significant analgesic effect in multiple inflammatory and neuropathic pain models, but their effect in bone cancer pain has never been explored. In this study, we utilized a BCP rat model with intra-tibial inoculation of Walker 256 mammary gland carcinoma cells, which developed progressive mechanical hypersensitivity but not thermal hypersensitivity. Intrathecal application of trichostatin A (TSA), a classic pan-HDAC inhibitor, ameliorated tactile hypersensitivity and enhanced the analgesic effect of morphine in BCP rats...
May 27, 2017: Brain Research
https://www.readbyqxmd.com/read/28374069/mu-and-kappa-opioid-receptors-of-the-periaqueductal-gray-stimulate-and-inhibit-thermogenesis-respectively-during-psychological-stress-in-rats
#15
Caroline Cristina-Silva, Victor Martins, Luciane H Gargaglioni, Kênia C Bícego
The periaqueductal gray matter (PAG) is rich in mu and kappa opioid receptors, and this system is involved in thermoregulation, analgesia, and defensive behaviors. No study approached the involvement of the PAG opioids in body temperature (Tb) regulation during psychological stress such as restraint. Because activation of mu and kappa receptors increases and reduces Tb, respectively, we tested the hypothesis that they exert excitatory and inhibitory modulation, respectively, of the restraint-induced fever in rats...
April 4, 2017: Pflügers Archiv: European Journal of Physiology
https://www.readbyqxmd.com/read/28284874/corrigendum-to-categorizing-natural-history-trajectories-of-ambulatory-function-measured-by-the-6-minute-walk-distance-in-patients-with-duchenne-muscular-dystrophy-neuromuscular-disorders-26-9-2016-576-583
#16
Eugenio Mercuri, James Edward Signorovitch, Elyse Swallow, Jinlin Song, Susan J Ward
No abstract text is available yet for this article.
May 2017: Neuromuscular Disorders: NMD
https://www.readbyqxmd.com/read/28181172/discrepant-imaging-findings-of-portal-vein-thrombosis-with-dynamic-computed-tomography-and-computed-tomography-during-arterial-portography-in-hepatocellular-carcinoma-possible-cause-leading-to-inappropriate-treatment-selection
#17
Hidenori Toyoda, Takashi Kumada, Toshifumi Tada, Kazuyuki Mizuno, Natsuko Kobayashi, Yosuke Inukai, Akira Takeda, Yasuhiro Sone
We encountered a patient with hepatocellular carcinoma who had discrepant imaging findings on portal vein thrombosis with portal phase dynamic computed tomography (CT) and CT during arterial portography (CTAP). CTAP, via the superior mesenteric artery and via the splenic artery, both showed a portal perfusion defect in the right hepatic lobe, indicating portal vein thrombosis in the main trunk of the right portal vein. Portal phase dynamic CT clearly depicted portal perfusion of the same hepatic area. Transarterial chemoembolization was successfully performed, but it was associated with severe liver injury...
April 2017: Clinical Journal of Gastroenterology
https://www.readbyqxmd.com/read/28057490/blockade-of-patch-based-%C3%AE-opioid-receptors-in-the-striatum-attenuates-methamphetamine-induced-conditioned-place-preference-and-reduces-activation-of-the-patch-compartment
#18
Kristen A Horner, Mary Caroline Logan, Trevor J Fisher, Jordan B Logue
The behavioral effects of methamphetamine (METH) are mediated by the striatum, which is divided into the patch compartment, which mediates limbic and reward functions, and the matrix compartment, which mediates sensorimotor tasks. METH treatment results in repetitive behavior that is related to enhanced relative activation of the patch versus the matrix compartment. The patch, but not the matrix compartment contains a high density of μ opioid receptors, and localized blockade of patch-based μ opioid receptors attenuates METH-induced patch-enhanced activity and repetitive behaviors...
February 5, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28047196/th-ab-207a-11-anatomical-and-functional-assessment-of-coronary-artery-disease-using-low-dose-whole-organ-dynamic-computed-tomography
#19
L Hubbard, B Ziemer, J Lipinski, S Malkasian, B Sadeghi, H Javan, B Dertli, E M Groves, S Molloi
PURPOSE: To evaluate the accuracy of a low-dose, first-pass-analysis (FPA) dynamic computed tomography angiography and perfusion (CTAP) technique, for whole-organ anatomical and functional assessment of coronary artery disease (CAD). METHODS: An angioplasty balloon was advanced into the left anterior descending (LAD) coronary artery of five swine (35-45 kg) to induce several levels of stenosis at maximal hyperemia (intracoronary adenosine, 240 µg/min). Reference fluorescence microspheres and intravenous contrast (370 mg/mL iodine, 25 mL, 7 mL/s) were injected centrally and dynamic imaging was performed using a 320-slice CT scanner at 100 kVp and 200 mA...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28042469/rational-design-of-a-water-soluble-lipid-compatible-fluorescent-probe-for-cu-i-with-sub-part-per-trillion-sensitivity
#20
M T Morgan, A McCallum, C J Fahrni
Fluorescence probes represent an attractive solution for the detection of the biologically important Cu(I) cation; however, achieving a bright, high-contrast response has been a challenging goal. Concluding from previous studies on pyrazoline-based fluorescent Cu(I) probes, the maximum attainable fluorescence contrast and quantum yield were limited due to several non-radiative deactivation mechanisms, including ternary complex formation, excited state protonation, and colloidal aggregation in aqueous solution...
February 2016: Chemical Science
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