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https://www.readbyqxmd.com/read/29352676/cardiorespiratory-dynamics-of-rescuers-during-cardiopulmonary-resuscitation-in-a-hypoxic-environment
#1
Tomonobu Sato, Tomonori Takazawa, Masahiro Inoue, Yasunori Tada, Takashi Suto, Masaru Tobe, Shigeru Saito
OBJECTIVE: We had previously experienced a case involving prolonged cardiopulmonary resuscitation (CPR) on Mt. Fuji (3776 m), demanding strenuous work by the rescuers. The objective of this study was to compare the effect of compression-only and conventional CPR on oxygen saturation of rescuers in a hypoxemic environment. METHODS: Changes in percutaneous arterial oxygen saturation (SpO2) and heart rate during CPR action were measured in a hypobaric chamber with barometric pressure adjusted to be equivalent to 3700 m above sea level (630-640 hPa)...
January 8, 2018: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29352476/pharmacokinetic-profiles-of-the-active-metamizole-metabolites-after-four-different-routes-of-administration-in-healthy-dogs
#2
M Giorgi, B Łebkowska-Wieruszewska, A Lisowski, H Owen, A Poapolathep, T W Kim, V De Vito
Metamizole (MT), an analgesic and antipyretic drug, is rapidly hydrolyzed to the active primary metabolite 4-methylaminoantipyrine (MAA) and relatively active secondary metabolite 4-aminoantipyrine (AA). The aim of this study was to assess the pharmacokinetic profiles of MAA and AA after dose of 25 mg/kg MT by intravenous (i.v.), intramuscular (i.m.), oral (p.o.), and rectal (RC) routes in dogs. Six dogs were randomly allocated to an open, single-dose, four-treatment, four-phase, unpaired, crossover study design...
January 19, 2018: Journal of Veterinary Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/29352330/relationship-between-power-duration-parameters-and-mechanical-and-anthropometric-properties-of-the-thigh-in-elite-cyclists
#3
Mehdi Kordi, Campbell Menzies, Len Parker Simpson
PURPOSE: The curvature constant (W') and asymptote (critical power; CP) of the power-duration relationship are important parameters for explaining cycling performance. Short-duration endurance cycling events rely more heavily on the W'; however, the full mechanistic underpinning of this parameter is yet to be determined. Evidence suggests both muscle volume and muscle strength may contribute to the magnitude of W'. Therefore, the present study investigated the relationship between power-duration parameters (CP and W') and (1) anthropometric and (2) mechanical properties of thigh muscles in a sample of elite cyclists...
January 19, 2018: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29352078/the-highly-divergent-mitochondrial-genomes-indicate-that-the-booklouse-liposcelis-bostrychophila-psocoptera-liposcelididae-is-a-cryptic-species
#4
Shiqian Feng, Qianqian Yang, Hu Li, Fan Song, Václav Stejskal, George P Opit, Wanzhi Cai, Zhihong Li, Renfu Shao
The booklouse, Liposcelis bostrychophila is an important storage pest worldwide. The mt genome of an asexual strain (Beibei, China) of the booklouse, L. bostrychophila, comprises two chromosomes; each chromosome contains approximate half of the 37 genes typically found in animals. The mt genomes of two sexual strains of L. bostrychophila, however, comprise five and seven chromosomes respectively; each chromosome contains one to six genes. To understand mt genome evolution in L. bostrychophila and whether L...
January 19, 2018: G3: Genes—Genomes—Genetics
https://www.readbyqxmd.com/read/29351885/repetitive-tms-to-augment-cognitive-processing-therapy-in-combat-veterans-of-recent-conflicts-with-ptsd-a-randomized-clinical-trial
#5
F Andrew Kozel, Michael A Motes, Nyaz Didehbani, Bambi DeLaRosa, Christina Bass, Caitlin D Schraufnagel, Penelope Jones, Cassie Rae Morgan, Jeffrey S Spence, Michael A Kraut, John Hart
BACKGROUND: The objective was to test whether repetitive Transcranial Magnetic Stimulation (rTMS) just prior to Cognitive Processing Therapy (CPT) would significantly improve the clinical outcome compared to sham rTMS prior to CPT in veterans with PTSD. METHODS: Veterans 18-60 years of age with current combat-related PTSD symptoms were randomized, using a 1:1 ratio in a parallel design, to active (rTMS+CPT) versus sham (sham+CPT) rTMS just prior to weekly CPT for 12-15 sessions...
December 28, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/29350803/thrombectomy-outcomes-for-acute-stroke-patients-with-anterior-circulation-tandem-lesions-a-clinical-registry-and-an-update-of-systematic-review-with-meta-analysis
#6
Udi Sadeh-Gonik, Noam Tau, Tal Friehmann, Serge Bracard, René Anxionnat, Anne-Laure Derelle, Romain Tonnelet, Liang Lia, Sébastien Richard, Xavier Armoiry, Benjamin Gory
BACKGROUND AND PURPOSE: Although mechanical thrombectomy (MT) appears to be superior in stroke patients with extracranial carotid disease (ECD) compared to thrombolysis alone, the impact of emergent carotid stenting during MT remains unclear. We assessed the MT outcomes in anterior stroke patients with ECD, especially when combined with carotid stenting. METHODS: We performed a retrospective analysis of our registry and conducted an update of a systematic review and meta-analysis of MT studies with or without stenting for anterior circulation stroke with ECD published between November 2010 and April 2017...
January 19, 2018: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/29350498/glioma-targeted-delivery-of-a-theranostic-liposome-integrated-with-quantum-dots-superparamagnetic-iron-oxide-and-cilengitide-for-dual-imaging-guiding-cancer-surgery
#7
He-Lin Xu, Jing-Jing Yang, De-Li ZhuGe, Meng-Ting Lin, Qun-Yan Zhu, Bing-Hui Jin, Meng-Qi Tong, Bi-Xin Shen, Jian Xiao, Ying-Zheng Zhao
Herein, a theranostic liposome (QSC-Lip) integrated with superparamagnetic iron oxide nanoparticles (SPIONs) and quantum dots (QDs) and cilengitide (CGT) into one platform is constructed to target glioma under magnetic targeting (MT) for guiding surgical resection of glioma. Transmission electron microscopy and X-ray photoelectron spectroscopy confirm the complete coencapsulation of SPIONs and QDs in liposome. Besides, CGT is also effectively encapsulated into the liposome with an encapsulation efficiency of ∼88...
January 19, 2018: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/29350304/defective-mitochondrial-atpase-due-to-rare-mtdna-m-8969g-a-mutation-causing-lactic-acidosis-intellectual-disability-and-poor-growth
#8
Pirjo Isohanni, Christopher J Carroll, Christopher B Jackson, Max Pohjanpelto, Tuula Lönnqvist, Anu Suomalainen
Mutations in mitochondrial ATP synthase 6 (MT-ATP6) are a frequent cause of NARP (neurogenic muscle weakness, ataxia, and retinitis pigmentosa) or Leigh syndromes, especially a point mutation at nucleotide position 8993. M.8969G>A is a rare MT-ATP6 mutation, previously reported only in three individuals, causing multisystem disorders with mitochondrial myopathy, lactic acidosis, and sideroblastic anemia or IgA nephropathy. We present two siblings with the m.8969G>A mutation and a novel, substantially milder phenotype with lactic acidosis, poor growth, and intellectual disability...
January 19, 2018: Neurogenetics
https://www.readbyqxmd.com/read/29348140/interactions-localization-and-phosphorylation-of-the-m6a-generating-mettl3-mettl14-wtap-complex
#9
Eva Schöller, Franziska Weichmann, Thomas Treiber, Sam Ringle, Nora Treiber, Andrew Flatley, Regina Feederle, Astrid Bruckmann, Gunter Meister
N6-methyladenine (m6A) is found on many eukaryotic RNAs including mRNAs. M6A modification has been implicated in mRNA stability and turn over, localization or translation efficiency. A heterodimeric enzyme complex composed of METTL3 and METTL14 generates m6A on mRNAs. METTL3/14 is found in the nucleus where it is localized to nuclear speckles and the splicing regulator WTAP is required for this distinct nuclear localization pattern. Although recent crystal structures revealed how the catalytic MT-A70 domains of METTL3 and METTL14 interact with each other, a more global architecture including WTAP and RNA interactions has not been reported so far...
January 18, 2018: RNA
https://www.readbyqxmd.com/read/29347120/microscopic-muon-dynamics-in-the-polymer-electrolyte-poly-ethylene-oxide
#10
Iain McKenzie, Stephen P Cottrell
The microscopic dynamics of protons (H^{+}) in poly(ethylene oxide) (PEO) have been investigated through a study of implanted positive muons (Mu^{+}), which can be considered a light proton analog. The exponential decay of the muon spin polarization in zero magnetic field indicated that Mu^{+} hopping is in the fast fluctuation limit between 140 and 310 K and the relaxation rate was found to be sensitive to the glass transition. Mu^{+} dynamics in PEO was monitored via the relaxation of the muon spin polarization in a transverse field of 10 mT...
July 2017: Physical Review. E
https://www.readbyqxmd.com/read/29346581/melatonin-attenuates-lung-ischaemia-reperfusion-injury-via-inhibition-of-oxidative-stress-and-inflammation
#11
Ming-Liang Wang, Chun-Hua Wei, Wen-Dong Wang, Jia-Shun Wang, Jun Zhang, Jian-Jun Wang
OBJECTIVES: Lung ischaemia-reperfusion injury is a complex pathophysiological process due to the production of reactive oxygen species and the generation of inflammatory reaction. We investigated the protective effects and the corresponding mechanism of melatonin (MT), a potent free-radical scavenger, on lung injury induced by ischaemia-reperfusion in a mouse model. METHODS: Adult male C57BL/6J mice (n = 30) were randomly and equally allocated into 5 groups: sham controls, IR, IR + 10 mg/kg MT, IR + 20 mg/kg MT and IR + 30 mg/kg MT...
January 15, 2018: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/29344253/diagnostic-value-of-medical-thoracoscopy-in-malignant-pleural-effusion-induced-by-non-hodgkin-s-lymphoma
#12
Zhen Wang, Yan-Bing Wu, Li-Li Xu, Mu-Lan Jin, Xiao-Li Diao, Xiao-Juan Wang, Zhao-Hui Tong, Huan-Zhong Shi
Malignant pleural effusion (MPE) appears in up to 20% of patients with non-Hodgkin's lymphoma (NHL). The present study aimed to assess the efficacy of medical thoracoscopy (MT) in the diagnosis of patients with MPE induced by NHL. Between July 2005 and June 2014, 833 patients with pleural effusions of unknown etiology underwent MT in Beijing Chaoyang Hospital (Beijing, China), where diagnostic thoracocentesis or/and blind pleural biopsy had failed to yield an answer. Demographic, radiographic, thoracoscopic, histological and immunophenotyping data of 10 NHL patients with MPE were then retrospectively analyzed...
December 2017: Oncology Letters
https://www.readbyqxmd.com/read/29343746/the-static-magnetic-field-remotely-boosts-the-efficiency-of-doxorubicin-through-modulating-ros-behaviors
#13
Behnam Hajipour Verdom, Parviz Abdolmaleki, Mehrdad Behmanesh
Exposure to magnetic field (MF) can affect cellular metabolism remotely. Cardio-toxic effects of Doxorubicin (DOXO) have limited clinical uses at high dose. MF due to its effect on reactive oxygen species (ROS) lifetime, may provide a suitable choice to boost the efficacy of this drug at low dose. Here, we investigated the potential effects of homogenous static magnetic field (SMF) on DOXO-induced toxicity and proliferation rate of cancer cells. The results indicated that SMF similar to DOXO decreased the cell viability as well as the proliferation rate of MCF-7 and HFF cells...
January 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29341603/pokmt1-from-the-polyketomycin-biosynthetic-machinery-of-streptomyces-diastatochromogenes-t%C3%A3-6028-belongs-to-the-emerging-family-of-c-methyltransferases-that-act-on-coa-activated-aromatic-substrates
#14
Xun Guo, Ivana Crnovcic, Chin-Yuan Chang, Jun Luo, Jeremy R Lohman, Monica Papinski, Andreas Bechthold, Geoffrey P Horsman, Ben Shen
Recent biochemical characterizations of the MdpB2 CoA ligase and MdpB1 C-methyltransferase (C-MT) from the maduropeptin (MDP, 2) biosynthetic machinery revealed unusual pathway logic involving C-methylation occurring on a CoA-activated aromatic substrate. Here we confirmed this pathway logic for the biosynthesis of polyketomycin (POK, 3). Biochemical characterization unambiguously established that PokM3 and PokMT1 catalyze the sequential conversion of 6-methylsalicylic acid (6-MSA, 4) to form 3,6-dimethylsalicylyl-CoA (3,6-DMSA-CoA, 6), which serves as the direct precursor for the 3,6-dimethylsalicylic acid (3,6-DMSA) moiety in the biosynthesis of 3...
January 17, 2018: Biochemistry
https://www.readbyqxmd.com/read/29340697/genetic-and-clinical-evidence-of-mitochondrial-dysfunction-in-autism-spectrum-disorder-and-intellectual-disability
#15
Alba Valiente-Pallejà, Helena Torrell, Gerard Muntané, Maria J Cortés, Rafael Martínez-Leal, Nerea Abasolo, Yolanda Alonso, Elisabet Vilella, Lourdes Martorell
Clinical conditions commonly associated with mitochondrial disorders (CAMDs) are often present in autism spectrum disorders (ASD) and intellectual disability (ID). Therefore, the mitochondrial dysfunction hypothesis has been proposed as a transversal mechanism that may function in both disorders. Here, we investigated the presence of conditions associated with mitochondrial disorders and mitochondrial DNA (mtDNA) alterations in 122 subjects who presented ASD with ID (ASD group), 115 subjects who presented ID but not ASD (ID group) and 112 healthy controls (HC group)...
January 11, 2018: Human Molecular Genetics
https://www.readbyqxmd.com/read/29340261/medical-support-with-acupuncture-and-massage-therapies-for-disaster-victims
#16
Masataka Miwa, Shin Takayama, Soichiro Kaneko
Background: After the Great East Japan Earthquake and Tsunami Disaster (GEJED) and Joso City Flood (JCF), a number of people were relocated to evacuation centers. In situations following a large-scale disaster, acupuncture can be applied for various health problems in evacuation centers. In this study, we report the medical support operation for evacuees with acupuncture and massage therapy (AP/MT) and its effectiveness. In addition, we propose an experience-based guideline for AP/MT in such situations...
January 2018: Journal of General and Family Medicine
https://www.readbyqxmd.com/read/29338837/stromule-extension-along-microtubules-coordinated-with-actin-mediated-anchoring-guides-perinuclear-chloroplast-movement-during-innate-immunity
#17
Amutha Sampath Kumar, Eunsook Park, Alexander Nedo, Ali Alqarni, Li Ren, Kyle Hoban, Shannon Modla, John H McDonald, Chandra Kambhamettu, Savithramma P Dinesh-Kumar, Jeffrey Lewis Caplan
Dynamic tubular extensions from chloroplasts called stromules have recently been shown to connect with nuclei and function during innate immunity. We demonstrate that stromules extend along microtubules (MTs) and MT organization directly affects stromule dynamics since stabilization of MTs chemically or genetically increases stromule numbers and length. Although actin filaments (AFs) are not required for stromule extension, they provide anchor points for stromules. Interestingly, there is a strong correlation between the direction of stromules from chloroplasts and the direction of chloroplast movement...
January 17, 2018: ELife
https://www.readbyqxmd.com/read/29338626/fitts-law-is-applicable-to-trunk-coordination-measurements-in-a-sitting-position
#18
Brenda E Groen, Viola C Altmann, Ruud W Verhagen, Yves C Vanlandewijck, Noël L W Keijsers
Trunk coordination is essential for many activities of daily living in wheelchair users. This study investigated whether Fitts' law is applicable to trunk movements in a sitting position. Fourteen healthy adults performed two series of 24 tasks of trunk flexion-extension movements in a sitting position. The results showed significant linear relationships between average group movement time (MT) and index of difficulty (ID) over all tasks (r2 = 0.92) and within target distances (0.94 < r2 < 1.00). Target distance affected intercept and slope (P < 0...
January 17, 2018: Journal of Motor Behavior
https://www.readbyqxmd.com/read/29338222/computational-modelling-of-a-caged-methyl-cation-structure-energetics-and-vibrational-analysis
#19
Philippe B Wilson, Ian H Williams
DFT calculations for CH3+ within a constrained cage of water molecules permit the controlled manipulation of distances rax and req to "axial" and "equatorial" waters. Equatorial CH…O interactions catalyze methyl transfer (MT) between axial waters. Variation in rax has a greater effect on CH bond lengths and stretching force constants in the symmetric SN2-like transition structures than variation in req. In-plane bending frequencies are insensitive to these variations in cage dimensions, but axial interactions loosen the out-of-plane bending mode (OP) whereas equatorial interactions stiffen it...
January 16, 2018: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/29337698/fe-and-co-nmr-studies-of-magnetoelectric-co2-y-type-hexaferrite-bscfao
#20
Baeksoon Choi, Sangil Kwon, Soonchil Lee, Chang Bae Park, Kwang Woo Shin, Keehoon Kim
The Fe3+ and Co2+ NMR spectra for Ba0.3Sr1.7Co2(Fe0.96Al0.04)12O22 (BSCFAO) and Ba0.3Sr1.7Co2Fe12O22 (BSCFO) were obtained in a zero magnetic field at a low temperature. We observed change in the enhancement effect of the NMR signals depending on the setting field, which was varied when applied along the b-axis and then turned off before the measurement was taken. The experimental results indicate that the magnetic structure changes from an alternating longitudinal cone to a transverse cone when the setting field is 250 mT...
January 16, 2018: Journal of Physics. Condensed Matter: An Institute of Physics Journal
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