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https://www.readbyqxmd.com/read/28723837/minimum-effective-volume-of-lidocaine-for-ultrasound-guided-costoclavicular-block
#1
Thitipan Sotthisopha, Maria Francisca Elgueta, Artid Samerchua, Prangmalee Leurcharusmee, Worakamol Tiyaprasertkul, Aida Gordon, Roderick J Finlayson, De Q Tran
BACKGROUND AND OBJECTIVES: This dose-finding study aimed to determine the minimum effective volume in 90% of patients (MEV90) of lidocaine 1.5% with epinephrine 5 μg/mL for ultrasound-guided costoclavicular block. METHODS: Using an in-plane technique and a lateral-to-medial direction, the block needle was positioned in the middle of the 3 cords of the brachial plexus in the costoclavicular space. The entire volume of lidocaine was deposited in this location. Dose assignment was carried out using a biased-coin-design up-and-down sequential method, where the total volume of local anesthetic administered to each patient depended on the response of the previous one...
July 19, 2017: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/28723759/determining-the-relationship-of-kinesiophobia-with-respiratory-functions-and-functional-capacity-in-ankylosing-spondylitis
#2
Göktuğ Er, Ender AngIn
Ankylosing spondylitis (AS) is a common inflammatory rheumatic disease that affects the axial skeleton, causes inflammatory lower back pain, and structural and functional disorders, which affect quality of life negatively.The purpose of this study is to investigate the effects of kinesiophobia in AS on pulmonary function tests (PFTs) and functional performance.Thirty-one individuals with AS (n = 19 male, n = 12 female) who were suitable on the basis of the Modified New York (MNY) criteria were included in the study...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28723064/doxorubicin-intracellular-remote-release-from-biocompatible-oegma-based-magnetic-nanogels-triggered-by-magnetic-hyperthermia
#3
Esther Cazares-Cortes, Ana Espinosa, Jean-Michel Guigner, Aude Michel, Nébéwia Griffete, Claire Wilhelm, Christine Menager
Hybrid nanogels, composed of thermoresponsive polymers and superparamagnetic nanoparticles (MNPs) are attractive nanocarriers for biomedical applications, being able - as polymer matrix - to uptake and release high quantities of chemotherapeutic agents and - as magnetic nanoparticles - to heat when exposed to an alternative magnetic field (AMF), better known as magnetic hyperthermia. Herein, biocompatible, pH-, magnetic- and thermo-responsive nanogels, based on oligo (ethylene glycol) methacrylate monomers (OEGMAs) and methacrylic acid co-monomer (MAA) were prepared by conventional precipitation radical co-polymerization in water, post-assembled by complexation with iron oxide magnetic nanoparticles (MNPs) of maghemite (-Fe2O3) and loaded with an anticancer drug (doxorubicin - DOX), for remotely controlled drug release by "hot-spot", as an athermal magnetic hyperthermia strategy against cancer...
July 19, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28722695/cardiac-cycle-efficiency-and-dicrotic-pressure-variations-new-parameters-for-fluid-therapy-a-pilot-observational-study
#4
Antonio Messina, Salvatore M Romano, Eleonora Bonicolini, Davide Colombo, Gianmaria Cammarota, Marco Chiostri, Francesco Della Corte, Paolo Navalesi, Didier Payen, Stefano Romagnoli
BACKGROUND: During a fluid challenge, the changes in cardiac performance and peripheral circulatory tone are closely related to the position of the ventricle on the Frank-Starling curve. Some patients have a good haemodynamic response to a fluid challenge, others hardly any response. The early haemodynamic effects of a fluid challenge could predict the final response before the entire fluid volume has been administered. OBJECTIVE: To assess whether a multivariate logistic regression model, including pulse pressure variation (PPV), cardiac cycle efficiency (CCE), arterial elastance and the difference between the dicrotic pressure and both systolic and mean arterial pressure (SAP - Pdic and MAP - Pdic) can predict cardiac responsiveness early during a fluid challenge in comparison with the standard procedure described elsewhere...
June 19, 2017: European Journal of Anaesthesiology
https://www.readbyqxmd.com/read/28722144/mechanisms-involved-in-hypersensitivity-reactions-to-polysulfone-hemodialysis-membranes
#5
Aranzazu Rodríguez-Sanz, Rafael Sánchez-Villanueva, Javier Domínguez-Ortega, Ana-María Fiandor, María-Paz Ruiz, Filomena Trocoli, Rafael Díaz-Tejeiro, Carlos Cadenillas, Elena González, Virginia Martínez, Margarita López-Trascasa, Santiago Quirce, Rafael Selgas, Teresa Bellón
Several cases of patients with anaphylactic or systemic hypersensitivity reactions to polysulfone (PS) hemodialysis (HD) membranes and tolerance to cellulose triacetate (CTA) membranes have recently been reported. To investigate the mechanisms involved in PS hypersensitivity, basophil, T cell, and complement activation were analyzed in acute-phase samples from two patients with systemic reactions to PS-based membranes. Basophil and T cell activation, as well as higher serum tryptase levels were detected in acute-phase samples compared with basal levels...
July 19, 2017: Artificial Organs
https://www.readbyqxmd.com/read/28720715/ischemic-preconditioning-does-not-alter-muscle-sympathetic-responses-to-static-handgrip-and-metaboreflex-activation-in-young-healthy-men
#6
Anthony V Incognito, Connor J Doherty, Jordan B Lee, Matthew J Burns, Philip J Millar
Ischemic preconditioning (IPC) has been hypothesized to elicit ergogenic effects by reducing feedback from metabolically sensitive group III/IV muscle afferents during exercise. If so, reflex efferent neural outflow should be attenuated. We investigated the effects of IPC on muscle sympathetic nerve activity (MSNA) during static handgrip (SHG) and used post-exercise circulatory occlusion (PECO) to isolate for the muscle metaboreflex. Thirty-seven healthy men (age: 24 ± 5 years [mean ± SD]) were randomized to receive sham (n = 16) or IPC (n = 21) interventions...
July 2017: Physiological Reports
https://www.readbyqxmd.com/read/28720600/is-the-mechanism-of-re-expansion-pulmonary-oedema-in-a-heart-lung-interaction
#7
Candy Masego Mokotedi, Martin Balik
The mechanism of re-expansion pulmonary oedema (Re-PE) is unclear. There are multiple variables in play when evaluating the response to evacuation of pleural fluid. We present an educational case of a critically ill patient admitted for respiratory failure who was fully dependent on ventricular pacing set at a constant rate throughout the episode of Re-PE. The transthoracic echocardiography (TTE) showed an ejection fraction of 38%, moderate mitral regurgitation (MR), mildly dilated right ventricle and moderate pulmonary hypertension...
July 18, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28720123/cardiovascular-magnetic-resonance-in-an-adult-human-population-serial-observations-from-the-multi-ethnic-study-of-atherosclerosis
#8
REVIEW
Kihei Yoneyama, Bharath A Venkatesh, David A Bluemke, Robyn L McClelland, João A C Lima
The Multi-Ethnic Study of Atherosclerosis (MESA) is the first large-scale multi-ethnic population study in the U.S. to use advanced cardiovascular magnetic resonance (CMR) imaging. MESA participants were free of cardiovascular disease at baseline between 2000 and 2002, and were followed up between 2009 and 2011 with repeated CMR examinations as part of MESA. CMR allows the clinician to visualize and accurately quantify volume and dimensions of all four cardiac chambers; measure systolic and diastolic ventricular function; assess myocardial fibrosis; assess vessel lumen size, vessel wall morphology, and vessel stiffness...
July 18, 2017: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/28719890/effect-of-neoadjuvant-nab-paclitaxel-plus-gemcitabine-therapy-on-overall-survival-in-patients-with-borderline-resectable-pancreatic-cancer-a-prospective-multicenter-phase-ii-trial-nac-ga-trial
#9
Ken-Ichi Okada, Toshio Shimokawa, Seiko Hirono, Manabu Kawai, Masayuki Sho, Sohei Satoi, Ippei Matsumoto, Hidetoshi Eguchi, Yoshiaki Murakami, Suguru Yamada, Mariko Doi, Hiroki Yamaue
We conducted a prospective multicenter phase II trial of patients with borderline resectable pancreatic carcinoma to investigate the efficacy of neoadjuvant nab-paclitaxel plus gemcitabine therapy on overall survival (OS). The clinical trial primarily evaluated OS time from the first day of protocol therapy as a primary endpoint. The secondary endpoints were recurrence-free survival from the first day of protocol therapy, safety of the protocol therapy (adverse effect), morbidity based on the Clavien Dindo classification of more than III, response rate, preoperative/postoperative tumor marker (CA 19-9, CEA), rate of normalization, reduction rate of the maximum standardized uptake value on positron emission tomography-computed tomography (limited to institutions where positron emission tomography-computed tomography was available), chemotherapeutic effect grade based on Evans' classification, resection rate, R0 resection rate, surgical data (operative time, blood loss, transfusion, postoperative hospital day), overall morbidity rates (reoperation, rate of readmission, mortality), patient rate in postoperative adjuvant therapy (entry rate, completion rate), dose intensity, quality of life regarding fatigue and malaise assessed by the questionnaire of FACIT-F (Japanese version), and peripheral sensory neuropathy assessed by the questionnaire of the FACT/GOG-NTX subscale (version 4; Japanese version)...
July 19, 2017: Oncology
https://www.readbyqxmd.com/read/28719516/echocardiography-and-passive-leg-raising-in-the-postoperative-period-a-prospective-observational-study
#10
Yasser El Hadouti, Lucía Valencia, Angel Becerra, Aurelio Rodríguez-Pérez, Jean L Vincent
BACKGROUND: Signs of hypovolaemia are frequent in the postoperative period, but not all patients need or respond to fluid administration. An increase in cardiac output (CO) after passive leg raising (PLR) has been demonstrated to be useful as a volume response predictor in non-surgical, spontaneously breathing patients. OBJECTIVE: The objective of this study was to evaluate the accuracy of transthoracic echocardiography after PLR to predict fluid responsiveness in post-surgical patients...
July 15, 2017: European Journal of Anaesthesiology
https://www.readbyqxmd.com/read/28719452/treatment-of-spinal-tumors-in-a-high-volume-center-has-direct-impact-on-local-recurrence-morbidity-and-mortality
#11
Ran Lador, Stefano Bandiera, Alessandro Gasbarrini, Riccardo Ghermandi, Stefano Boriani
OBJECTIVE OF THE STUDY: En bloc resections of spine tumors aim at locally controlling the disease for both improving the patient's quality of life as well as improving mortality. The purpose of this study was to compare the outcome between patients who were initially treated in a high volume specialized center, and patients who initially underwent either invasive diagnostic procedure or an initial surgical attempt to treat the disease in a different center. MATERIALS AND METHODS: A retrospective study of 1681 patients affected by spine tumors-treated from 1990 to 2015 by the same team...
July 17, 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28719405/clinical-outcomes-1-year-after-empiric-131i-therapy-for-hyperthyroid-disorders-real-life-experience-and-predictive-factors-of-functional-response
#12
Lavinia Vija Racaru, Charlotte Fontan, Mathilde Bauriaud-Mallet, Séverine Brillouet, Olivier Caselles, Slimane Zerdoud, Delphine Bastié, Delphine Vallot, Philippe Caron, Manuel Bardiès, Frederic Courbon
: Radioiodine is a therapeutic option in Europe for Graves' disease (GD) and toxic multinodular goiter (MNG). PURPOSE: To compare empiric and calculated I activities using 2013 EANM recommendations. To look for predictive factors of therapeutic response to an empiric activity of I. To assess clinical situations favoring calculated treatment modalities. PATIENTS AND METHODS: Prospective monocentric study of clinical outcomes at 1 year follow-up in 86 patients with GD and MNG who received empiric I therapeutic activities (348-939 MBq)...
July 17, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28719019/initial-testing-of-a-pixelated-silicon-detector-prototype-in-proton-therapy
#13
Andrew J Wroe, Grant McAuley, Anthony V Teran, Jeannie Wong, Marco Petasecca, Michael Lerch, James M Slater, Anatoly B Rozenfeld
As technology continues to develop, external beam radiation therapy is being employed, with increased conformity, to treat smaller targets. As this occurs, the dosimetry methods and tools employed to quantify these fields for treatment also have to evolve to provide increased spatial resolution. The team at the University of Wollongong has developed a pixelated silicon detector prototype known as the dose magnifying glass (DMG) for real-time small-field metrology. This device has been tested in photon fields and IMRT...
July 18, 2017: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28718700/use-of-single-dose-oral-gabapentin-to-attenuate-fear-responses-in-cage-trap-confined-community-cats-a-double-blind-placebo-controlled-field-trial
#14
Katherine E Pankratz, Kelli K Ferris, Emily H Griffith, Barbara L Sherman
Objectives This double-blind, placebo-controlled study evaluated the safety and efficacy of single-dose oral gabapentin administered for the attenuation of fear responses in cage-trap confined community cats. Methods Community cats presented in cage traps for trap-neuter-return (TNR) were recruited and screened for inclusion. Each enrolled cat was randomly assigned and administered one of three equal-volume, single-dose treatments: placebo, low-dose gabapentin (50 mg) or high-dose gabapentin (100 mg). At baseline, 1, 2, 3 and 12 h post-administration, a single, blinded observer scored each cat for signs of fear and sedation using published paradigms, calculated the respiratory rate and documented any observable facial injuries...
July 1, 2017: Journal of Feline Medicine and Surgery
https://www.readbyqxmd.com/read/28718683/the-measurement-of-cough-response-to-bronchoconstriction-induced-by-methacholine-inhalation-in-healthy-subjects-an-examination-using-the-astograph-method
#15
Johsuke Hara, Masaki Fujimura, Noriyuki Ohkura, Tamami Sakai, Kenta Yamamura, Miki Abo, Hayato Koba, Satoshi Watanabe, Taro Yoneda, Shingo Nishikawa, Takashi Sone, Hideharu Kimura, Yoshihisa Ishiura, Kazuo Kasahara
BACKGROUND: We demonstrated that heightened cough response to bronchoconstriction is a fundamental feature of cough variant asthma (CVA). To evaluate this physiological feature of CVA in daily clinical practice, it is necessary to clarify the cough response to bronchoconstriction in healthy subjects. We evaluated cough response to methacholine (MCh)-induced bronchoconstriction in healthy subjects. A forced oscillometry technique was used to measure airway resistance changes with Mch. METHODS: Healthy never-smokers (21 men, 20 women; mean 22...
July 18, 2017: Experimental Lung Research
https://www.readbyqxmd.com/read/28717404/physical-activity-does-not-alter-prolactin-levels-in-post-menopausal-women-results-from-a-dose-response-randomized-controlled-trial
#16
Darren R Brenner, Yibing Ruan, Andria R Morielli, Kerry S Courneya, Christine M Friedenreich
BACKGROUND: Increased circulating levels of prolactin have been associated with increased risk of both in situ and invasive breast cancer. We investigated whether or not physical activity had a dose-response effect in lowering plasma levels of prolactin in postmenopausal women. METHODS: Four hundred previously inactive but healthy postmenopausal women aged 50-74 years of age were randomized to 150 or 300 min per week of aerobic physical activity in a year-long intervention...
2017: European Review of Aging and Physical Activity
https://www.readbyqxmd.com/read/28717318/hemogram-responses-in-goats-toward-challenged-with-corynebacterium-pseudotuberculosis-and-its-immunogen-mycolic-acids
#17
Mohammed Naji Odhah, Faez Firdaus Jesse Abdullah, Abd Wahid Haron, Mohd Azmi Mohd Lila, Mohd Zamri-Saad, Zaid Khuder, Idris Umar Hambali, Muhammed Umar, Wessam Monther Saleh
AIM: This study was conducted to analyze the changes in blood profile of goats inoculated with Corynebacterium pseudotuberculosis and its immunogen mycolic acid (MA) extract. MATERIALS AND METHODS: A total of 12 clinically healthy crossbred Boer female goats were divided into three groups; A, B and C (4 goats each per group). Group A was inoculated with 2 ml sterile phosphate buffered saline via intradermal route as the negative control group whilst Group B was inoculated with 2 ml of MA extract (1 g/ml) intradermally and Group C was then inoculated with 2 ml (1×10(9)) colony forming unit of active C...
June 2017: Veterinary World
https://www.readbyqxmd.com/read/28716828/creation-and-preliminary-characterization-of-pregnane-x-receptor-and-constitutive-androstane-receptor-knockout-rats
#18
Kevin P Forbes, Evguenia Kouranova, Daniel Tinker, Karen Janowski, Doug Cortner, Aaron McCoy, Xiaoxia Cui
The nuclear receptors pregnane X receptor (PXR) and constitutive androstane receptor (CAR) are closely related transcription factors that regulate the expression of Phase I (Cytochrome P450s), Phase II metabolizing enzymes and transporter genes in response to stimulation from xenobiotics, including prescription drugs. PXR and CAR are also involved in other endogenous processes, such as in inflammation, glucose homeostasis and lipid metabolism, and are thus potential drug targets themselves. PXR and CAR knockout and humanized mouse models have proven useful...
July 17, 2017: Drug Metabolism and Disposition: the Biological Fate of Chemicals
https://www.readbyqxmd.com/read/28715972/defensins-in-viral-infection-and-pathogenesis
#19
Mayumi K Holly, Karina Diaz, Jason G Smith
α, β, and ω defensins are effectors of the innate immune system with potent antibacterial, antiviral, and antifungal activity. Defensins have direct antiviral activity in cell culture, with varied mechanisms for individual viruses, although some common themes have emerged. In addition, defensins have potent immunomodulatory activity that can alter innate and adaptive immune responses to viral infection. In some cases, there is evidence for paradoxical escape from defensin neutralization or enhancement of viral infection...
July 17, 2017: Annual Review of Virology
https://www.readbyqxmd.com/read/28715960/histone-methylation-by-set-domain-proteins-in-fungi
#20
Michael Freitag
Histone-modifying enzymes are responsible for regulating transcription, recombination, DNA repair, DNA replication, chromatid cohesion, and chromosome segregation. Fungi are ideally suited for comparative chromatin biology because sequencing of numerous genomes from many clades is coupled to existing rich methodology that allows truly holistic approaches, integrating evolutionary biology with mechanistic molecular biology and ecology, promising applications in medicine or plant pathology. While genome information is rich, mechanistic studies on histone modifications are largely restricted to two yeasts, Saccharomyces cerevisiae and Schizosaccharomyces pombe, and one filamentous fungus, Neurospora crassa-three species that arguably are not representative of this diverse kingdom...
July 17, 2017: Annual Review of Microbiology
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