keyword
MENU ▼
Read by QxMD icon Read
search

Divers

keyword
https://www.readbyqxmd.com/read/28320890/a-biophysical-vascular-bubble-model-for-devising-decompression-procedures
#1
Ran Arieli, Abraham Marmur
Vascular bubble models, which present a realistic biophysical approach, hold great promise for devising suitable diver decompression procedures. Nanobubbles were found to nucleate on a flat hydrophobic surface, expanding to form bubbles after decompression. Such active hydrophobic spots (AHS) were formed from lung surfactants on the luminal aspect of ovine blood vessels. Many of the phenomena observed in these bubbling vessels correlated with those known to occur in diving. On the basis of our previous studies, which proposed a new model for the formation of arterial bubbles, we now suggest the biophysical model presented herein...
March 2017: Physiological Reports
https://www.readbyqxmd.com/read/28317172/parelaphostrongylus-tenuis-cerebrospinal-nematodiasis-in-a-horse-with-cervical-scoliosis-and-meningomyelitis
#2
N S Mittelman, T J Divers, J B Engiles, R Gerhold, S Ness, P V Scrivani, T Southard, A L Johnson
There are reports of horses with acute onset acquired cervical scoliosis and cutaneous analgesia. The underlying dorsal gray column myelitis that produces these neurologic signs has been only presumptively attributed to migration of Parelaphostrongylus tenuis within the spinal cord. Despite previous confirmation brain by polymerase chain reaction testing, of P. tenuis within the brain of horses by polymerase chain reaction testing, genetic testing has failed to definitively identify the presence of this parasite in cases of equine myelitis...
March 20, 2017: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/28316408/isolation-and-identification-of-cutaneous-leishmaniasis-species-by-pcr-rflp-in-ilam-province-the-west-of-iran
#3
Ali Kermanjani, Lame Akhlaghi, Hormozd Oormazdi, Ramtin Hadighi
Cutaneous leishmaniasis (CL) is one of the most common parasitic diseases and public health problems in Iran. CL is endemic in most parts of Ilam province, in the west of Iran. The distance from the center of country, the great number of divers rural areas, and lack of specialists and laboratory facilities have been the major causes of Leishmania species remaining unknown in this region. Polymerase chain reaction followed by restriction fragment length polymorphism was performed to identify the Leishmania species in 61 patients with cutaneous lesions...
March 2017: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/28296928/the-probability-and-severity-of-decompression-sickness
#4
Laurens E Howle, Paul W Weber, Ethan A Hada, Richard D Vann, Petar J Denoble
Decompression sickness (DCS), which is caused by inert gas bubbles in tissues, is an injury of concern for scuba divers, compressed air workers, astronauts, and aviators. Case reports for 3322 air and N2-O2 dives, resulting in 190 DCS events, were retrospectively analyzed and the outcomes were scored as (1) serious neurological, (2) cardiopulmonary, (3) mild neurological, (4) pain, (5) lymphatic or skin, and (6) constitutional or nonspecific manifestations. Following standard U.S. Navy medical definitions, the data were grouped into mild-Type I (manifestations 4-6)-and serious-Type II (manifestations 1-3)...
2017: PloS One
https://www.readbyqxmd.com/read/28294692/lower-extremity-isokinetic-strength-ratios-of-elite-springboard-and-platform-diving-athletes
#5
Amilton Vieira, Savio Alex, André Martorelli, Lee E Brown, Ricardo Moreira, Martim Bottaro
OBJECTIVES: The purpose of the present study was to examine knee extensor and flexor muscle strength ratios of an elite group of diving athletes. METHODS: Sixteen divers (10 females and 6 males) from the Brazil national team were assessed for lower-body strength. They had participated in international competitions such as the 2016 Olympic Games and 2015 Pan American Games. The dynamic concentric torque of their knee flexor and extensor muscles were evaluated using a Biodex isokinetic dynamometer...
March 15, 2017: Physician and Sportsmedicine
https://www.readbyqxmd.com/read/28271156/stones-in-special-situations
#6
Mordechai Duvdevani, Stavros Sfoungaristos, Karim Bensalah, Benoit Peyronnet, Amy Krambeck, Sanjay Khadji, Ahmet Muslumanuglu, David Leavitt, Jude Divers, Zeph Okeke, Arthur Smith, Janelle Fox, Michael Ost, Andreas J Gross, Hassan Razvi
There are several special situations in which urinary lithiasis presents management challenges to the urologist. An in-depth knowledge of the pathophysiology, unique anatomy, and treatment options is crucial in order to maintain good health in these patients. In this review, we summarize the current literature on the management of the following scenarios: bladder stones, stones in bowel disease, during pregnancy, in association with renal anomalies, with skeletal deformities, in urinary diversions, and in children...
March 7, 2017: World Journal of Urology
https://www.readbyqxmd.com/read/28270155/non-invasive-continuous-monitoring-of-pro-oxidant-effects-of-engineered-nanoparticles-on-aquatic-microorganisms
#7
REVIEW
Christian Santschi, Nadia Von Moos, Volodymyr B Koman, Vera I Slaveykova, Paul Bowen, Olivier J F Martin
Engineered nanomaterials (ENMs) are key drivers for the development of highly sophisticated new technologies. As all new attainments, the rapidly increasing used of ENMs raise concerns about their safety for the environment and humans. There is growing evidence showing that if engineered nanomaterials are released into the environment, there is a possibility that they could cause harm to aquatic microorganisms. Among the divers effects triggering their toxicity the ability of ENMs to generate reactive oxygen species (ROS) capable of oxidizing biomolecules is currently considered a central mechanism of toxicity...
March 7, 2017: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/28270012/sensitive-performance-based-assessment-of-everyday-action-in-older-and-younger-adults
#8
Sarah Seligman Rycroft, Tania Giovannetti, Ross Divers, Jacob Hulswit
Everyday function is compromised by mild cognitive changes in aging. These changes predict risk for future decline and dementia but remain poorly characterized, largely due to a scarcity of sensitive, objective measures.Twenty-seven younger adults and 25 non-demented older adults completed the Naturalistic Action Test (NAT), a performance-based measure of everyday action involving simple and complex tasks. Performance was coded for overt errors and subtle inefficiencies. Participants also completed self-report functional measures and cognitive tests...
March 7, 2017: Neuropsychology, Development, and Cognition. Section B, Aging, Neuropsychology and Cognition
https://www.readbyqxmd.com/read/28264874/a-prospective-cohort-study-of-cigarette-prices-and-smoking-cessation-in-older-smokers
#9
Victoria L Stevens, W Ryan Diver, Michal Stoklosa, W Dana Flanders, J Lee Westmaas, Ahmedin Jemal, Jeffrey M Drope, Susan M Gapstur, Eric J Jacobs
BACKGROUND: Cigarette price increases effectively prevent smoking initiation and reduce cigarette consumption among young smokers. However, the impact of cigarette prices on smoking cessation among older smokers is less clear, particularly for those aged 65 years and older, a group that is at highest risk of smoking-related disease and will almost double in the United States between 2012 and 2050. METHODS: Biennial questionnaires administered between 1997 and 2013 assessed smoking status for 9,446 Cancer Prevention Study-II Nutrition Cohort participants who were ≥50 years old and lived in Washington, DC and 48 states...
March 6, 2017: Cancer Epidemiology, Biomarkers & Prevention
https://www.readbyqxmd.com/read/28251616/migraine-with-neurological-features-in-a-scuba-diver-with-a-patent-foramen-ovale
#10
Ashhar Ali, A David Rothner
Neurologic complications of decompression sickness have been observed for over half of a century. Little is known, however, about the risk of diving in patients that suffer from migraine with aura (MWA). We report the case of a pediatric patient with a history of migraine with aura, who was later found to have a PFO, who developed headache with neurological symptoms during a scuba diving lesson.
March 2, 2017: Headache
https://www.readbyqxmd.com/read/28249344/psychotropic-drug-use-in-recreational-scuba-divers-and-its-effect-on-severe-narcosis
#11
Thierry Krummel, Alicia Thiery, Marion Villain, Bernard Schittly, Benoit Brouant
Recreational scuba diving is no longer reserved for young healthy individuals, and as a result, medical drug consumption is on the rise in the diving population. Due to the possible potentiation of nitrogen narcosis by psychotropic drugs, the latter are hence discouraged and are subject to contraindications for practice. However, there are no available experimental data to support this theoretical assumption. The objective of this study is to investigate whether psychotropic drug users are more at risk of severe narcosis...
March 1, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28246186/regulation-of-transporters-and-channels-by-membrane-trafficking-complexes-in-epithelial-cells
#12
Curtis T Okamoto
The vectorial secretion and absorption of fluid and solutes by epithelial cells is dependent on the polarized expression of membrane solute transporters and channels at the apical and basolateral membranes. The establishment and maintenance of this polarized expression of transporters and channels are affected by divers protein-trafficking complexes. Moreover, regulation of the magnitude of transport is often under control of physiological stimuli, again through the interaction of transporters and channels with protein-trafficking complexes...
February 28, 2017: Cold Spring Harbor Perspectives in Biology
https://www.readbyqxmd.com/read/28243777/blood-pooling-in-extrathoracic-veins-after-glossopharyngeal-insufflation
#13
Tanja Mijacika, Daria Frestad, Kasper Kyhl, Otto Barak, Ivan Drvis, Niels H Secher, Ante Buca, Ante Obad, Zeljko Dujic, Per Lav Madsen
PURPOSE: Trained breath-hold divers hyperinflate their lungs by glossopharyngeal insufflation (GPI) to prolong submersion time and withstand lung collapse at depths. Pulmonary hyperinflation leads to profound hemodynamic changes. METHODS: Thirteen divers performed preparatory breath-holds followed by apnea with GPI. Filling of extrathoracic veins was determined by ultrasound and magnetic resonance imaging and peripheral extravasation of fluid was assessed by electrical impedance...
February 27, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28231476/evaluation-of-cognitive-performance-in-professional-divers-by-means-of-event-related-potentials-and-neuropsychology
#14
Mehmet Ergen, Atilla Uslu, Ozlem Caglar, Sukriye Akca-Kalem, Maide Cimsit, Hakan Gurvit
OBJECTIVE: We investigated whether professional air diving with no decompression illness causes any long-term changes in cognitive functions. METHODS: The all-male participants consisted of 18 healthy control (HC) volunteers and 32 divers. Divers were divided into two subgroups as moderate exposure group, Divers-I (DI) and extensive exposure group, Divers-II (DII). Participants were administered a comprehensive neuropsychological battery and event-related potentials (ERPs) were recorded while they performed auditory oddball task and visual continuous performance test (CPT)...
April 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28228681/discovery-of-a-new-species-of-hermit-crab-of-the-genus-pylopaguropsis-alcock-1905-from-the-caribbean-den-commensal-or-cleaner-crustacea-anomura-paguridae
#15
Rafael Lemaitre
A new secretive, yet brightly colored hermit crab species of the family Paguridae, Pylopaguropsis mollymulleraesp. n., is fully described based on specimens from the reefs of Bonaire, Lesser Antilles, southern Caribbean Sea. Populations of this new species were discovered and photographed in the Bonaire National Marine Park under a large coral ledge, at a depth of 13.7 m, living in crevices known by scuba divers to serve as den to a pair of "flaming reef lobsters" Enoplometopus antillensis, or a "broad banded moray" Channomuraena vittata...
2017: ZooKeys
https://www.readbyqxmd.com/read/28228118/the-association-of-kidney-function-with-repetitive-breath-hold-diving-activities-of-female-divers-from-korea-haenyeo
#16
Yun Jung Oh, Ji Yong Jung, Sung Soo Kim, Kyong-Suk Chae, Jiwon Rhu, Chungsik Lee
BACKGROUND: Voluntary apnea during breath-hold diving (BHD) induces cardiovascular changes including bradycardia, reduced cardiac output, and arterial hypertension. Although the impacts of repetitive BHD on cardiovascular health have been studied previously, the long-term risk for kidney dysfunction has never been investigated. METHODS: A cross-sectional propensity score-matched study was performed to evaluate the influence of repetitive long-lasting BHD on kidney function...
February 23, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28221393/comex-30-f%C3%A3-r-behandling-av-tryckfallssjuka-med-neurologiska-symtom
#17
Anders Rosén, Nicklas Oscarsson, Olaf Gräbel, Göran Sandström
The use of treatment table COMEX 30 for severe neurological decompression sickness Decompression sickness (DCS) can occur after all dives. It often requires treatment in a pressure chamber. DCS with symptoms from the nervous system is particularly serious. In certain cases, the commonly used recompression table (USN TT6) does not suffice to revert severe neurological symptoms. A more advanced recompression table, COMEX 30, can be utilized in these cases. We report three cases of DCS where treatment according to COMEX 30 successfully resolved neurological symptoms...
February 17, 2017: Läkartidningen
https://www.readbyqxmd.com/read/28220254/hiv-1-persistent-viremia-is-frequently-followed-by-episodes-of-low-level-viremia
#18
Marek Widera, Miriam Dirks, Barbara Bleekmann, Robert Jablonka, Martin Däumer, Hauke Walter, Robert Ehret, Jens Verheyen, Stefan Esser
After the start of antiretroviral therapy (ART), plasma HIV-RNA levels should fall below the limit of detection (LOD) within 24 weeks. Hence, the prolonged decline of HIV-RNA after ART initiation is defined as persistent viremia (PV). In this retrospective study, we analyzed factors associated with PV. Next-generation sequencing of viral RNA/DNA was performed to study viral evolution and the emergence of drug-resistance mutations in HIV-infected patients with PV (n = 20). In addition, HIV-DNA species, immunological parameters, and clinical data of the patients were analyzed...
February 20, 2017: Medical Microbiology and Immunology
https://www.readbyqxmd.com/read/28202583/acoustic-measurements-of-post-dive-cardiac-responses-in-southern-elephant-seals-mirounga-leonina-during-surfacing-at-sea
#19
Louise Day, Joffrey Jouma'a, Julien Bonnel, Christophe Guinet
Measuring physiological data in free-ranging marine mammals remains challenging, owing to their far-ranging foraging habitat. Yet, it is important to understand how these divers recover from effort expended underwater, as marine mammals can perform deep and recurrent dives. Among them, southern elephant seals (Mirounga leonina) are one of the most extreme divers, diving continuously at great depth and for long duration while travelling over large distances within the Southern Ocean. To determine how they manage post-dive recovery, we deployed hydrophones on four post-breeding female southern elephant seals...
February 15, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28196116/the-scoring-bias-in-reverse-docking-and-the-score-normalization-strategy-to-improve-success-rate-of-target-fishing
#20
Qiyao Luo, Liang Zhao, Jianxing Hu, Hongwei Jin, Zhenming Liu, Liangren Zhang
Target fishing often relies on the use of reverse docking to identify potential target proteins of ligands from protein database. The limitation of reverse docking is the accuracy of current scoring funtions used to distinguish true target from non-target proteins. Many contemporary scoring functions are designed for the virtual screening of small molecules without special optimization for reverse docking, which would be easily influenced by the properties of protein pockets, resulting in scoring bias to the proteins with certain properties...
2017: PloS One
keyword
keyword
13004
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"