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https://www.readbyqxmd.com/read/29655683/bronchodilator-effects-of-lignosus-rhinocerotis-extract-on-rat-isolated-airways-is-linked-to-the-blockage-of-calcium-entry
#1
Mei-Kee Lee, Kuan-Hon Lim, Paul Millns, Suresh Kumar Mohankumar, Szu-Ting Ng, Chon-Seng Tan, Sue-Mian Then, Yvonne Mbaki, Kang-Nee Ting
BACKGROUND: Lignosus rhinocerotis (Cooke) Ryvarden is a popular medicinal mushroom used for centuries in Southeast Asia to treat asthma and chronic cough. The present study aimed to investigate the effect of this mushroom on airways patency. MATERIALS AND METHODS: The composition of L. rhinocerotis TM02 cultivar was analyzed. Organ bath experiment was employed to study the bronchodilator effect of Lignosus rhinocerotis cold water extract (CWE) on rat isolated airways...
March 15, 2018: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/29621293/the-effects-of-a-dopamine-agonist-apomorphine-on-experimental-and-spontaneous-pain-in-patients-with-chronic-radicular-pain-a-randomized-double-blind-placebo-controlled-cross-over-study
#2
May Haddad, Dorit Pud, Roi Treister, Erica Suzan, Elon Eisenberg
BACKGROUND: Although evidence suggests that dopaminergic systems are involved in pain processing, the effects of dopaminergic interventions on pain remains questionable. This randomized, double blinded, placebo-controlled, cross-over study was aimed at exploring the effect of the dopamine agonist apomorphine on experimental pain evoked by cold stimulation and on spontaneous pain in patients with lumbar radicular (neuropathic) pain. METHODS: Data was collected from 35 patients with chronic lumbar radiculopathy (18 men, mean age 56...
2018: PloS One
https://www.readbyqxmd.com/read/29616368/beneficial-effect-of-hot-spring-bathing-on-stress-levels-in-japanese-macaques
#3
Rafaela S C Takeshita, Fred B Bercovitch, Kodzue Kinoshita, Michael A Huffman
The ability of animals to survive dramatic climates depends on their physiology, morphology and behaviour, but is often influenced by the configuration of their habitat. Along with autonomic responses, thermoregulatory behaviours, including postural adjustments, social aggregation, and use of trees for shelter, help individuals maintain homeostasis across climate variations. Japanese macaques (Macaca fuscata) are the world's most northerly species of nonhuman primates and have adapted to extremely cold environments...
April 3, 2018: Primates; Journal of Primatology
https://www.readbyqxmd.com/read/29548214/achieving-the-classical-carnot-efficiency-in-a-strongly-coupled-quantum-heat-engine
#4
Y Y Xu, B Chen, J Liu
Generally, the efficiency of a heat engine strongly coupled with a heat bath is less than the classical Carnot efficiency. Through a model-independent method, we show that the classical Carnot efficiency is achieved in a strongly coupled quantum heat engine. First, we present the first law of quantum thermodynamics in strong coupling. Then, we show how to achieve the Carnot cycle and the classical Carnot efficiency at strong coupling. We find that this classical Carnot efficiency stems from the fact that the heat released in a nonequilibrium process is balanced by the absorbed heat...
February 2018: Physical Review. E
https://www.readbyqxmd.com/read/29515454/-in-vivo-recording-of-neural-and-behavioral-correlates-of-anesthesia-induction-reversal-and-euthanasia-in-cephalopod-molluscs
#5
Hanna M Butler-Struben, Samantha M Brophy, Nasira A Johnson, Robyn J Crook
Cephalopod molluscs are among the most behaviorally and neurologically complex invertebrates. As they are now included in research animal welfare regulations in many countries, humane and effective anesthesia is required during invasive procedures. However, currently there is no evidence that agents believed to act as anesthetics produce effects beyond immobility. In this study we demonstrate, for the first time, that two of the most commonly used agents in cephalopod general anesthesia, magnesium chloride and ethanol, are capable of producing strong and reversible blockade of afferent and efferent neural signal; thus they are genuine anesthetics, rather than simply sedating agents that render animals immobile but not insensible...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29500655/cutaneous-neural-activity-and-endothelial-involvement-in-cold-induced-vasodilatation
#6
Gary J Hodges, Matthew M Mallette, Stephen S Cheung
Whether sympathetic withdrawal or endothelial dilators such as nitric oxide (NO) contributes to cold-induced vasodilation (CIVD) events is unclear. We measured blood flow and finger skin temperature (Tfinger ) of the index finger in nine participants during hand immersion in a water bath at 35 °C for 30 min, then at 8 °C for 30 min. Data were binned into 10 s averages for the entire 60 min protocol for laser-Doppler flux (LDF) and Tfinger . At baseline, Tfinger was 35.3 ± 0.2 °C and LDF was 227 ± 28 PU...
March 2, 2018: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29428241/ethnomedical-uses-and-pharmacological-activities-of-most-prevalent-species-of-genus-piper-in-panama-a-review
#7
REVIEW
Armando A Durant-Archibold, Ana I Santana, Mahabir P Gupta
ETHNOPHARMACOGICAL RELEVANCE: Piperaceae is the fifth largest family of plants in Panama. This review focuses on the ethnomedical uses of the most prevalent Panamanian species and biological activities of their extracts and/or constituents both in Panama and worldwide. Many species have a plethora of ethnomedical uses such as antibacterial, antifungal, anti-inflammatory, anticancer, antidiabetic, anti-Helicobacter pylori, antiulcer, antiprotozoal, estrogenic, insecticidal, local anesthetic, diuretic, and for women's health conditions...
February 8, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29402353/effectiveness-of-rapid-cooling-as-a-method-of-euthanasia-for-young-zebrafish-danio-rerio
#8
Chelsea K Wallace, Lauren A Bright, James O Marx, Robert P Andersen, Mary C Mullins, Anthony J Carty
Despite increased use of zebrafish (Danio rerio) in biomedical research, consistent information regarding appropriate euthanasia methods, particularly for embryos, is sparse. Current literature indicates that rapid cooling is an effective method of euthanasia for adult zebrafish, yet consistent guidelines regarding zebrafish younger than 6 mo are unavailable. This study was performed to distinguish the age at which rapid cooling is an effective method of euthanasia for zebrafish and the exposure times necessary to reliably euthanize zebrafish using this method...
January 1, 2018: Journal of the American Association for Laboratory Animal Science: JAALAS
https://www.readbyqxmd.com/read/29351426/the-effects-of-heat-and-cold-on-health-with-special-reference-to-finnish-sauna-bathing
#9
Ilkka Heinonen, Jari A Laukkanen
Environmental stress such as extremely warm or cold temperature is often considered a challenge to human health and body homeostasis. However, human body can adapt relatively well to heat and cold environments and recent studies have also elucidated that particularly heat stress might be even highly beneficial for human health. Consequently, the aim of the present brief review is first to discuss general cardiovascular and other responses to acute heat stress, followed by a review of beneficial effects of Finnish sauna bathing on general and cardiovascular health and mortality as well as dementia and Alzheimer's disease risk...
December 20, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/29347588/finite-size-effects-in-canonical-and-grand-canonical-quantum-monte-carlo-simulations-for-fermions
#10
Zhenjiu Wang, Fakher F Assaad, Francesco Parisen Toldin
We introduce a quantum Monte Carlo method at finite temperature for interacting fermionic models in the canonical ensemble, where the conservation of the particle number is enforced. Although general thermodynamic arguments ensure the equivalence of the canonical and the grand-canonical ensembles in the thermodynamic limit, their approach to the infinite-volume limit is distinctively different. Observables computed in the canonical ensemble generically display a finite-size correction proportional to the inverse volume, whereas in the grand-canonical ensemble the approach is exponential in the ratio of the linear size over the correlation length...
October 2017: Physical Review. E
https://www.readbyqxmd.com/read/29228823/current-practice-in-the-rehabilitation-of-complex-regional-pain-syndrome-a-survey-of-practitioners
#11
Caroline Miller, Mark Williams, Peter Heine, Esther Williamson, Neil O'connell
INTRODUCTION: International clinical guidelines for Complex Regional Pain Syndrome recommend a wide range and variation of rehabilitation therapies as the core treatment. It is likely that most therapists employ a range of approaches when managing people with Complex Regional Pain Syndrome but a recent Cochrane review identified little evidence relating to the effectiveness of multi-modal rehabilitation. There is need for up to date trials of rehabilitation for Complex Regional Pain Syndrome, but in order to develop a clear model of best practice that can be rigorously evaluated we need to understand current practice...
December 11, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/29222596/the-effects-of-local-forearm-muscle-cooling-on-motor-unit-properties
#12
Matthew M Mallette, Lara A Green, David A Gabriel, Stephen S Cheung
PURPOSE: Muscle cooling impairs maximal force. Using needle electromyography (EMG) to assess motor unit properties during muscle cooling, is limited and equivocal. Therefore, we aimed to determine the impact of local muscle cooling on motor unit firing properties using surface EMG decomposition. METHODS: Twenty participants (12 M, 8 F) completed maximal, evoked, and trapezoidal contractions during thermoneutral and cold muscle conditions. Forearm muscle temperature was manipulated using 10-min neutral (~ 32 °C) or 20-min cold (~ 3 °C) water baths...
February 2018: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29220355/adults-with-patellofemoral-pain-do-not-exhibit-manifestations-of-peripheral-and-central-sensitization-when-compared-to-healthy-pain-free-age-and-sex-matched-controls-an-assessor-blinded-cross-sectional-study
#13
Michael Skovdal Rathleff, Camilla Rams Rathleff, Aoife Stephenson, Rebecca Mellor, Mark Matthews, Kay Crossley, Bill Vicenzino
Patellofemoral Pain (PFP) is highly prevalent among adults and adolescents. Localized mechanical hyperalgesia around the knee and tibialis anterior have been observed in people with PFP, but limited knowledge of potential manifestations of central sensitisation exists. The aims of this study were to study conditioned pain modulation (CPM) and wide-spread hyperalgesia in adults with PFP. This assessor-blinded cross-sectional study design compared CPM and mechanical pressure pain thresholds (PPT) between 33 adults (23 females) diagnosed with PFP and 32 age and sex matched pain-free controls...
2017: PloS One
https://www.readbyqxmd.com/read/29121286/prediction-of-persistent-post-surgery-pain-by-preoperative-cold-pain-sensitivity-biomarker-development-with-machine-learning-derived-analysis
#14
J Lötsch, A Ultsch, E Kalso
Background: To prevent persistent post-surgery pain, early identification of patients at high risk is a clinical need. Supervised machine-learning techniques were used to test how accurately the patients' performance in a preoperatively performed tonic cold pain test could predict persistent post-surgery pain. Methods: We analysed 763 patients from a cohort of 900 women who were treated for breast cancer, of whom 61 patients had developed signs of persistent pain during three yr of follow-up...
October 1, 2017: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/29057336/evaluation-of-the-stability-of-lyophilized-loop-mediated-isothermal-amplification-reagents-for-the-detection-of-coxiella-burnetii
#15
Hua-Wei Chen, Wei-Mei Ching
Coxiella burnetii , the causative pathogen for Q fever, is an obligate intracellular bacterium and designated as a biosafety level 3 agent. Detection and quantification of the bacteria with conventional culturing methods is time-consuming and poses significant health risks. Polymerase chain reaction (PCR)-based assays have been developed for detecting C. burnetii and could provide rapid diagnosis. However, they require specialized equipment, including a cold chain for PCR reagents that maintains their stability during storage and transport...
October 2017: Heliyon
https://www.readbyqxmd.com/read/29055673/hemorrhoids-during-pregnancy-sitz-bath-vs-ano-rectal-cream-a-comparative-prospective-study-of-two-conservative-treatment-protocols
#16
Bader Hamza Shirah, Hamza Asaad Shirah, Abdelelah Hussein Fallata, Shaima Nassar Alobidy, Majdah Mohammad Al Hawsawi
BACKGROUND: Hemorrhoids are a very common ano-rectal condition affecting pregnant females worldwide and representing a major medical and socioeconomic problem. In this paper, we aim to compare the effectiveness of the Sitz bath method with an ano-rectal cream as part of a conservative management protocol to treat hemorrhoids among pregnant Saudi Arabian females. METHODS: A prospective comparative study of the results of two conservative treatment protocols of 495 pregnant females diagnosed to have hemorrhoids during pregnancy between January 2010 and December 2014 was done...
October 18, 2017: Women and Birth: Journal of the Australian College of Midwives
https://www.readbyqxmd.com/read/29047488/composite-reflective-absorptive-ir-blocking-filters-embedded-in-metamaterial-antireflection-coated-silicon
#17
C D Munson, S K Choi, K P Coughlin, J J McMahon, K H Miller, L A Page, E J Wollack
Infrared (IR)-blocking filters are crucial for controlling the radiative loading on cryogenic systems and for optimizing the sensitivity of bolometric detectors in the far-IR. We present a new IR filter approach based on a combination of patterned frequency-selective structures on silicon and a thin (25-75 μm thick) absorptive composite based on powdered reststrahlen absorbing materials. For a 300 K blackbody, this combination reflects ∼50% of the incoming light and blocks >99.8% of the total power with negligible thermal gradients and excellent low-frequency transmission...
July 1, 2017: Applied Optics
https://www.readbyqxmd.com/read/28950461/efficiency-versus-speed-in-quantum-heat-engines-rigorous-constraint-from-lieb-robinson-bound
#18
Naoto Shiraishi, Hiroyasu Tajima
A long-standing open problem whether a heat engine with finite power achieves the Carnot efficiency is investgated. We rigorously prove a general trade-off inequality on thermodynamic efficiency and time interval of a cyclic process with quantum heat engines. In a first step, employing the Lieb-Robinson bound we establish an inequality on the change in a local observable caused by an operation far from support of the local observable. This inequality provides a rigorous characterization of the following intuitive picture that most of the energy emitted from the engine to the cold bath remains near the engine when the cyclic process is finished...
August 2017: Physical Review. E
https://www.readbyqxmd.com/read/28937782/cold-water-immersion-cooling-rates-in-football-linemen-and-cross-country-runners-with-exercise-induced-hyperthermia
#19
Sandra Fowkes Godek, Katherine E Morrison, Gregory Scullin
CONTEXT:   Ideal and acceptable cooling rates in hyperthermic athletes have been established in average-sized participants. Football linemen (FBs) have a small body surface area (BSA)-to-mass ratio compared with smaller athletes, which hinders heat dissipation. OBJECTIVE:   To determine cooling rates using cold-water immersion in hyperthermic FBs and cross-country runners (CCs). DESIGN:   Cohort study. SETTING:   Controlled university laboratory...
October 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/28887799/study-of-polar-organic-compounds-in-airborne-particulate-matter-of-a-coastal-urban-city
#20
Dimitra Balla, Dimitra Voutsa, Constantini Samara
Two classes of polar organic compounds, dicarboxylic acids (DCAs) and sugars/sugar anhydrides (S/SAs), were measured in airborne particulate matter in the area of Thessaloniki, northern Greece. The target compounds were measured simultaneously in two particle fractions PM10 and PM2.5 during cold and warm periods by employing extraction in an ultrasonic bath with a mixture of MeOH/DCM (1:2 v/v), derivatization with BSTFA-TMCS and GC-MS for analysis. At both fractions, phthalic was the predominant carboxylic acid during cold season and a-ketoglutaric acid in warm season, followed by maleic and malic...
September 8, 2017: Environmental Science and Pollution Research International
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