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https://www.readbyqxmd.com/read/28728287/-analysis-of-structure-and-function-of-meibomian-glands-in-healthy-population-at-different-ages
#1
J Hong, H Q Qu
Objective: To observe the structure and function of meibomian glands in normal population at different ages. Methods: From October 2011 to August 2012, meibomian gland information was collected in healthy volunteers without any symptoms of ocular discomfort, aged more than 5 years. The people were grouped by every 10 years of age. The meibomian gland opening, secretion state and characteristics and Max's line were observed by slit lamp microscopic examination, and the meibomian gland dropouts were examined by noncontact infrared meibomian gland microscopy...
July 11, 2017: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
https://www.readbyqxmd.com/read/28728281/-a-cross-sectional-study-of-cataract-in-residents-with-type-2-diabetes-living-in-xinjing-town-shanghai
#2
B J Zhu, X R Zou, Y Xu, X L Bai, M Lu, Y Y Ma, L N Lu, J F Zhu, H D Zou, X Xu
Objective: To investigate the prevalence, subtypes and risk factors of cataract in type 2 diabetic individuals. Methods: Geographically defined cluster sampling method was used in this population-based, cross-sectional study. There were 7 756 type 2 diabetes individuals in Xinjing Town with a residential population of 88 864. The type 2 diabetic individuals were randomly selected from 20 basic sample units in Xinjing Town of Changning District from April to June 2016. All participants received visual acuity measurement and eye examination...
July 11, 2017: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
https://www.readbyqxmd.com/read/28728152/use-of-the-putamen-as-a-surrogate-anatomical-marker-for-the-internal-segment-of-the-globus-pallidus-in-deep-brain-stimulation-surgery
#3
John A Thompson, Dali Yin, Steven G Ojemann, Aviva Abosch
OBJECTIVE: The success of deep brain stimulation (DBS) of the internal segment of the globus pallidus (GPi) depends on accurately placing the electrode into the GPi motor territory. Direct targeting can be difficult as GPi laminar borders are not always clearly identifiable on MRI. Here, we report a method for using the putamen (PUT) as a surrogate anatomical marker to target the GPi. METHODS: We developed a PUT-based GPi targeting using the FGATIR (fast gray matter acquisition T1-weighted inversion recovery) MRI sequence and compared it with consensus coordinate-based indirect targeting...
July 21, 2017: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/28728120/cadmium-and-high-temperature-effects-on-brain-and-behaviour-of-lymantria-dispar-l-caterpillars-originating-from-polluted-and-less-polluted-forests
#4
Vesna Perić-Mataruga, Branka Petković, Larisa Ilijin, Marija Mrdaković, Slađana Dronjak Čučaković, Dajana Todorović, Milena Vlahović
Insects brain as a part of nervous system is the first-line of fast stress response that integrate stress signals to regulate all aspects of insect physiology and behaviour. The cadmium (Cd) bioaccumulation factor (BF), activity of the neurotoxicity biomarker acetylcholinesterase (AChE), dopamine content, expression and amount of Hsp70 in the brain and locomotor activity were evaluated in the 4th instar of Lymantria dispar L. caterpillars fed a Cd supplemented diet and reared in an optimal temperature regime (23 °C) and/or exposed to high temperature (28 °C)...
July 11, 2017: Chemosphere
https://www.readbyqxmd.com/read/28728102/uterine-necrosis-following-a-combination-of-uterine-compression-sutures-and-vascular-ligation-during-a-postpartum-hemorrhage-a-case-report
#5
Saad Benkirane, Hanane Saadi, Badr Serji, Ahmed Mimouni
INTRODUCTION: The Postpartum bleeding is the first cause of maternal mortality in Morocco. It is an obstetrical emergency that requires a fast multimodal management including medical care, interventional procedure and in few cases a salvatory surgery. CLINICAL CASE: We report a rare case of uterine necrosis following postpartum hemorrhage, refractory to medical therapy, and which was controlled by a combination of uterine hemostatic techniques and vascular ligation three days after surgery, the patient developed a fever (39°C)...
July 10, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28728081/brain-state-dependent-recruitment-of-high-frequency-oscillations-in-the-human-hippocampus
#6
Pablo Billeke, Tomas Ossandon, Marcelo Stockle, Marcela Perrone-Bertolotti, Philippe Kahane, Jean-Philippe Lachaux, Pablo Fuentealba
Ripples are high-frequency bouts of coordinated hippocampal activity believed to be crucial for information transfer and memory formation. We used intracortical macroelectrodes to record neural activity in the human hippocampus of awake subjects undergoing surgical treatment for refractory epilepsy and distinguished two populations of ripple episodes based on their frequency spectrum. The phase-coupling of one population, slow ripples (90-110 Hz), to cortical delta oscillations was differentially modulated by cognitive task; whereas the second population, fast ripples (130-170 Hz), was not seemingly correlated to local neural activity...
June 23, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/28728066/baseline-serum-phosphatidylcholine-plasmalogen-concentrations-are-inversely-associated-with-incident-myocardial-infarction-in-patients-with-mixed-peripheral-artery-disease-presentations
#7
Joseph V Moxon, Rhondda E Jones, Gerard Wong, Jacquelyn M Weir, Natalie A Mellett, Bronwyn A Kingwell, Peter J Meikle, Jonathan Golledge
BACKGROUND AND AIMS: Despite current best care, patients with peripheral artery disease (PAD) remain at high risk of myocardial infarction, and biomarkers to more accurately assess cardiovascular risk are needed. This study assessed the relationship between the serum lipidome and incident myocardial infarction in a cohort of PAD patients. METHODS: 265 PAD patients were followed up for a median of 23 months, during which 18 people suffered a myocardial infarction...
June 29, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28727912/multivariate-analysis-for-quantification-of-plutonium-iv-in-nitric-acid-based-on-absorption-spectra
#8
Amanda M Lines, Susan R Adami, Sergey I Sinkov, Gregg J Lumetta, Samuel A Bryan
Development of more effective, reliable, and fast methods for monitoring process streams is a growing opportunity for analytical applications. Many fields can benefit from on-line monitoring, including the nuclear fuel cycle where improved methods for monitoring radioactive materials will facilitate maintenance of proper safeguards and ensure safe and efficient processing of materials. On-line process monitoring with a focus on optical spectroscopy can provide a fast, non-destructive method for monitoring chemical species...
July 20, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28727908/leveraging-a-clinical-phase-ib-proof-of-concept-study-for-the-gpr40-agonist-mk-8666-in-patients-with-type-2-diabetes-for-model-informed-phase-ii-dose-selection
#9
A W Krug, P Vaddady, R A Railkar, B J Musser, J Cote, Agh Ederveen, D G Krefetz, E DeNoia, A L Free, L Morrow, M V Chakravarthy, E Kauh, D A Tatosian, P A Kothare
GPR40 mediates free fatty acid-induced insulin secretion in beta cells. We investigated the safety, pharmacokinetics, and glucose response of MK-8666, a partial GPR40 agonist, after once-daily multiple dosing in type 2 diabetes patients. This double-blind, multisite, parallel-group study randomized 63 patients (placebo, n = 18; 50 mg, n = 9; 150 mg, n = 18; 500 mg, n = 18) for 14-day treatment. The results showed no serious adverse effects or treatment-related hypoglycemia. One patient (150-mg group) showed mild-to-moderate transaminitis at the end of dosing...
July 20, 2017: Clinical and Translational Science
https://www.readbyqxmd.com/read/28727823/structural-instability-of-large-scale-functional-networks
#10
Shogo Mizutaka, Kousuke Yakubo
We study how large functional networks can grow stably under possible cascading overload failures and evaluated the maximum stable network size above which even a small-scale failure would cause a fatal breakdown of the network. Employing a model of cascading failures induced by temporally fluctuating loads, the maximum stable size nmax has been calculated as a function of the load reduction parameter r that characterizes how quickly the total load is reduced during the cascade. If we reduce the total load sufficiently fast (r ≥ rc), the network can grow infinitely...
2017: PloS One
https://www.readbyqxmd.com/read/28727813/label-free-three-dimensional-imaging-of-caenorhabditis-elegans-with-visible-optical-coherence-microscopy
#11
Séverine Coquoz, Paul J Marchand, Arno Bouwens, Laurent Mouchiroud, Vincenzo Sorrentino, Daniel Szlag, Johan Auwerx, Theo Lasser
Fast, label-free, high-resolution, three-dimensional imaging platforms are crucial for high-throughput in vivo time-lapse studies of the anatomy of Caenorhabditis elegans, one of the most commonly used model organisms in biomedical research. Despite the needs, methods combining all these characteristics have been lacking. Here, we present label-free imaging of live Caenorhabditis elegans with three-dimensional sub-micrometer resolution using visible optical coherence microscopy (visOCM). visOCM is a versatile optical imaging method which we introduced recently for tomography of cell cultures and tissue samples...
2017: PloS One
https://www.readbyqxmd.com/read/28727806/genocore-a-simple-and-fast-algorithm-for-core-subset-selection-from-large-genotype-datasets
#12
Seongmun Jeong, Jae-Yoon Kim, Soon-Chun Jeong, Sung-Taeg Kang, Jung-Kyung Moon, Namshin Kim
Selecting core subsets from plant genotype datasets is important for enhancing cost-effectiveness and to shorten the time required for analyses of genome-wide association studies (GWAS), and genomics-assisted breeding of crop species, etc. Recently, a large number of genetic markers (>100,000 single nucleotide polymorphisms) have been identified from high-density single nucleotide polymorphism (SNP) arrays and next-generation sequencing (NGS) data. However, there is no software available for picking out the efficient and consistent core subset from such a huge dataset...
2017: PloS One
https://www.readbyqxmd.com/read/28727775/adolescent-health-in-rural-ghana-a-cross-sectional-study-on-the-co-occurrence-of-infectious-diseases-malnutrition-and-cardio-metabolic-risk-factors
#13
Marie Alicke, Justice K Boakye-Appiah, Inusah Abdul-Jalil, Andrea Henze, Markus van der Giet, Matthias B Schulze, Florian J Schweigert, Frank P Mockenhaupt, George Bedu-Addo, Ina Danquah
In sub-Saharan Africa, infectious diseases and malnutrition constitute the main health problems in children, while adolescents and adults are increasingly facing cardio-metabolic conditions. Among adolescents as the largest population group in this region, we investigated the co-occurrence of infectious diseases, malnutrition and cardio-metabolic risk factors (CRFs), and evaluated demographic, socio-economic and medical risk factors for these entities. In a cross-sectional study among 188 adolescents in rural Ghana, malarial infection, common infectious diseases and Body Mass Index were assessed...
2017: PloS One
https://www.readbyqxmd.com/read/28727759/use-of-a-microfluidic-platform-to-uncover-basic-features-of-energy-and-environmental-stress-responses-in-individual-cells-of-bacillus-subtilis
#14
Matthew T Cabeen, Jonathan R Russell, Johan Paulsson, Richard Losick
Bacteria use a variety of stress-sensing systems to sense and respond to diverse stressors and to ensure their survival under adverse conditions. The gram-positive bacterium Bacillus subtilis responds to energy stress (ATP depletion) and to environmental stressors using two distinct stress-sensing pathways that converge on the alternative sigma factor σB to provoke a general stress response. Past efforts to study the σB stress response in bulk culture and on agarose pads were unable to visualize the responses of individual cells under tightly controlled conditions for extended periods of time...
July 20, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28727685/erbb4-signaling-in-dopaminergic-axonal-projections-increases-extracellular-dopamine-levels-and-regulates-spatial-working-memory-behaviors
#15
M Skirzewski, I Karavanova, A Shamir, L Erben, J Garcia-Olivares, J H Shin, D Vullhorst, V A Alvarez, S G Amara, A Buonanno
Genetic variants of Neuregulin 1 (NRG1) and its neuronal tyrosine kinase receptor ErbB4 are associated with risk for schizophrenia, a neurodevelopmental disorder characterized by excitatory/inhibitory imbalance and dopamine (DA) dysfunction. To date, most ErbB4 studies have focused on GABAergic interneurons in the hippocampus and neocortex, particularly fast-spiking parvalbumin-positive (PV+) basket cells. However, NRG has also been shown to modulate DA levels, suggesting a role for ErbB4 signaling in dopaminergic neuron function...
July 20, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28727546/a-formative-evaluation-of-a-diabetes-prevention-program-using-the-re-aim-framework-in-a-learning-health-care-system-utah-2013-2015
#16
Kimberly D Brunisholz, Jaewhan Kim, Lucy A Savitz, Mia Hashibe, Lisa H Gren, Sharon Hamilton, Kelly Huynh, Elizabeth A Joy
INTRODUCTION: Evaluation of interventions can help to close the gap between research and practice but seldom takes place during implementation. Using the RE-AIM framework, we conducted a formative evaluation of the first year of the Intermountain Healthcare Diabetes Prevention Program (DPP). METHODS: Adult patients who met the criteria for prediabetes (HbA1c of 5.70%-6.49% or fasting plasma glucose of 100-125 mg/dL) were attributed to a primary care provider from August 1, 2013, through July 31, 2014...
July 20, 2017: Preventing Chronic Disease
https://www.readbyqxmd.com/read/28727480/pilot-study-of-propranolol-premedication-to-reduce-fdg-uptake-in-brown-adipose-tissue-on-pet-scans-of-adolescent-and-young-adult-oncology-patients
#17
Anil George, Partha Sinha, Gary Conrad, Aum A Memon, Emily V Dressler, Lars M Wagner
OBJECTIVE: Physiologic uptake of (18)F-fluorodeoxyglucose (FDG) in brown adipose tissue (adipose tissue) of cancer patients may confound interpretation of positron emission tomography (PET) scans. Uptake in adipose tissue occurs in up to half of pediatric oncology patients undergoing PET scans, and is especially common in adolescents. adipose tissue is innervated by the sympathetic nervous system, and beta blockers such as propranolol have shown efficacy in reducing adipose tissue uptake on PET scans done in older adult oncology patients...
July 20, 2017: Pediatric Hematology and Oncology
https://www.readbyqxmd.com/read/28727436/evidence-for-ultra-low-energy-vibrations-in-large-organic-molecules
#18
Hui Chen, Thomas Pope, Zhuoyan Wu, Dongfei Wang, Lei Tao, De-Liang Bao, Wende Xiao, Jun-Long Zhang, Yu-Yang Zhang, Shi-Xuan Du, Song Gao, Sokrates T Pantelides, Werner A Hofer, Hong-Jun Gao
The quantum efficiency or the rate of conversion of incident photon to free electron in photosynthesis is known to be extremely high. It has long been thought that the origin of this efficiency are molecular vibrations leading to a very fast separation of electrons and holes within the involved molecules. However, molecular vibrations are commonly in the range above 100 meV, which is too high for excitations in an ambient environment. Here, we analyze experimental spectra of single organic molecules on metal surfaces at ~ 4 K, which often exhibit a pronounced dip...
July 20, 2017: Nano Letters
https://www.readbyqxmd.com/read/28727413/quantifying-the-metabolome-of-pseudomonas-taiwanensis-vlb120-evaluation-of-hot-and-cold-combined-quenching-extraction-approaches
#19
Gossa Garedew Wordofa, Mette Kristensen, Lars Schrübbers, Douglas McCloskey, Jochen Forster, Konstantin Schneider
Absolute quantification of free intracellular metabolites is a valuable tool in both, pathway discovery and metabolic engineering. In this study, we conducted a comprehensive examination of different hot and cold combined quenching/extraction approaches to extract and quantify intracellular metabolites of Pseudomonas taiwanensis VLB120 to provide a useful reference dataset of absolute intracellular metabolite concentrations. The suitability of commonly used metabolomics tools including pressure driven fast filtration system followed by combined quenching/extraction techniques (such as cold methanol/acetonitrile/water, hot water, boiling ethanol/water, as well as cold ethanol/water) were tested and evaluated for P...
July 20, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28727412/a-novel-host-guest-recognition-assisted-electrochemical-release-its-reusable-sensing-application-based-on-dna-cross-configuration-fueled-target-cycling-and-sdr-amplification
#20
Yuanyuan Chang, Ying Zhuo, Yaqin Chai, Ruo Yuan
In this work, an elegantly designed host-guest recognition-assisted electrochemical release was established and applied in a reusable electrochemical biosensor for the detection of microRNA-182-5p (miRNA-182-5p), a prostate cancer biomarker in prostate cancer, based on the DNA cross configuration-fueled target cycling and strand displacement reaction (SDR) amplification. With such design, the single target miRNA input could be converted to large numbers of single-stranded DNA (S1-Trp and S2-Trp) output which could be trapped by cucurbit[8]uril-methyl viologen (CB-8-MV2+) based on the host-guest recognition, significantly enhancing the sensitivity for miRNA detection...
July 20, 2017: Analytical Chemistry
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