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https://www.readbyqxmd.com/read/28812967/tanshinone-induced-ers-suppresses-igfii-activation-to-alleviate-ang-ii-mediated-cardiac-hypertrophy
#1
Ya-Fang Chen, Nien-Hung Lee, Pei-Ying Pai, Li-Chin Chung, Chia-Yao Shen, Peramaiyan Rajendran, Yu-Feng Chen, Ray-Jade Chen, Vijaya Padma Viswanadha, Wei-Wen Kuo, Chih-Yang Huang
Cardiomyopathy involves changes in myocardial ultrastructure and cardiac hypertrophy. Angiotensin II (AngII) has previously been shown to stimulate the expression of IGF-2 and IGF-2R in H9c2 cardiomyoblasts and increase of blood pressure, and cardiac hypertrophy. Estrogen receptors (ERs) exert protective effects, such as anti-hypertrophy in cadiomyocytes. Tanshinone IIA (TSN), a main active ingredient from a Chinese medical herb, Salvia miltiorrhiza Bunge (Danshen), was shown to protect cardiomyocytes hypertrophy by different stress signals...
October 2017: Journal of Receptor and Signal Transduction Research
https://www.readbyqxmd.com/read/28810623/evaluation-of-heat-shock-protein-hsp-72-expression-in-retinal-ganglion-cells-of-rats-with-glaucoma
#2
Guo-Hua Wang, Yi-Qiao Xing
The present study was planned to observe the expression of heat shock protein 72 (HSP72) in retina of rats in a glaucoma model. A total of 50 Wistar rats were randomly divided into the high intraocular tension group (glaucoma model) and the sham control (sham operation) group. Glaucoma rat models were created by application of electrocoagulation on at least three groups of veins, reduction of venous return of aqueous humor and by enhancement of intraocular tension at the same time; 1, 2, 3, 4 and 8 weeks after operation, the intraocular tension of rats was observed respectively, and the expression/distribution of HSP72 in retina was assessed by immunohistochemical detection...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28802275/response-of-methylocystis-sp-strain-sc2-to-salt-stress-physiology-global-transcriptome-and-amino-acid-profiles
#3
Dongfei Han, Hannes Link, Werner Liesack
Soil microorganisms have to rapidly respond to salt-induced osmotic stress. Type II methanotrophs of the genus Methylocystis are widely distributed in upland soils, but are known to have a low salt tolerance. Here, we tested the ability of Methylocystis sp. strain SC2 to adapt to increased salinity. When exposed to 0.75% NaCl, methane oxidation was completely inhibited for 2.25 h and fully recovered within 6 h. Growth was inhibited for 23.5 h and then fully recovered. Its transcriptome was profiled after 0 min (control), 45 min (early response) and 14 h (late response) of stress exposure...
August 11, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28793217/mutation-in-the-core-structure-of-desmin-intermediate-filaments-affects-myoblast-elasticity
#4
Catherine Even, Gilles Abramovici, Florence Delort, Anna F Rigato, Virginie Bailleux, Abel de Sousa Moreira, Patrick Vicart, Felix Rico, Sabrina Batonnet-Pichon, Fatma Briki
Elastic properties of cells are mainly derived from the actin cytoskeleton. However, intermediate filaments are emerging as major contributors to the mechanical properties of cells. Using atomic force microscopy, we studied the elasticity of mouse myoblasts expressing a mutant form of the gene encoding for desmin intermediate filaments, p.D399Y. This variant produces desmin aggregates, the main pathological symptom of myofibrillar myopathies. Here we show that desmin-mutated cells display a 39% increased median elastic modulus compared to wild-type cells...
August 8, 2017: Biophysical Journal
https://www.readbyqxmd.com/read/28781135/five-year-epidemiology-of-liquefied-petroleum-gas-related-burns
#5
Ronghua Jin, Pan Wu, Jon Kee Ho, Xingang Wang, Chunmao Han
BACKGROUND: The incidence of liquefied petroleum gas (LPG)-related burns has increased over recent years, and it has become a serious public health issue in developing countries such as India and Turkey. This paper aims to investigate the epidemiological characteristics of LPG-related burns to provide assistance and suggestions for planning prevention strategies. METHODS: A 5-year retrospective study was conducted in patients with LPG-related burns admitted to the Department of Burns & Wound Care Center, Second Affiliated Hospital of Zhejiang University, College of Medicine, between 1st January 2011 and 31st December 2015...
August 3, 2017: Burns: Journal of the International Society for Burn Injuries
https://www.readbyqxmd.com/read/28777321/prevalence-and-genetic-characteristics-of-staphylococcus-aureus-and-staphylococcus-argenteus-isolates-harboring-panton-valentine-leukocidin-enterotoxins-and-tsst-1-genes-from-food-handlers-in-myanmar
#6
Meiji Soe Aung, Thida San, Mya Mya Aye, San Mya, Win Win Maw, Khin Nyein Zan, Wut Hmone Win Htut, Mitsuyo Kawaguchiya, Noriko Urushibara, Nobumichi Kobayashi
Asymptomatic carriers of toxigenic Staphylococcus aureus are potential source of diseases, including food poisoning. Toxigenic potential and genetic traits of colonizing S. aureus were investigated for 563 healthy food handlers in Myanmar. Carriage of S. aureus was found in 110 individuals (19.5%), and a total of 144 S. aureus isolates were recovered from nasal cavities (110 isolates) and hands (34 isolates). Panton-Valentine leucocidin genes (pvl) were detected in 18 isolates (12.5%), among which 11 isolates were classified into coa-VIa, agr type III, and ST1930 (CC96) that had been also detected in pvl-positive clinical isolates in Myanmar...
August 4, 2017: Toxins
https://www.readbyqxmd.com/read/28773920/improvement-in-fatigue-performance-of-aluminium-alloy-welded-joints-by-laser-shock-peening-in-a-dynamic-strain-aging-temperature-regime
#7
Chun Su, Jianzhong Zhou, Xiankai Meng, Shu Huang
As a new treatment process after welding, the process parameters of laser shock peening (LSP) in dynamic strain aging (DSA) temperature regimes can be precisely controlled, and the process is a non-contact one. The effects of LSP at elevated temperatures on the distribution of the surface residual stress of AA6061-T6 welded joints were investigated by using X-ray diffraction technology with the sin²ϕ method and Abaqus software. The fatigue life of the welded joints was estimated by performing tensile fatigue tests...
September 26, 2016: Materials
https://www.readbyqxmd.com/read/28772620/a-study-of-polycrystalline-silicon-damage-features-based-on-nanosecond-pulse-laser-irradiation-with-different-wavelength-effects
#8
Jiangmin Xu, Chao Chen, Tengfei Zhang, Zhenchun Han
Based on PVDF (piezoelectric sensing techniques), this paper attempts to study the propagation law of shock waves in brittle materials during the process of three-wavelength laser irradiation of polysilicon, and discusses the formation mechanism of thermal shock failure. The experimental results show that the vapor pressure effect and the plasma pressure effect in the process of pulsed laser irradiation lead to the splashing of high temperature and high density melt. With the decrease of the laser wavelength, the laser breakdown threshold decreases and the shock wave is weakened...
March 3, 2017: Materials
https://www.readbyqxmd.com/read/28772045/translational-registry-for-cardiomyopathies-torch-rationale-and-first-results
#9
Claudia Seyler, Benjamin Meder, Tanja Weis, Thea Schwaneberg, Kerstin Weitmann, Wolfgang Hoffmann, Hugo A Katus, Andreas Dösch
AIMS: Non-ischemic cardiomyopathies (CMPs) comprise heart muscle disorders of different causes with high variability in disease phenotypes and clinical progression. The lack of national structures for the efficient recruitment, clinical and molecular classification, and follow-up of patients with non-ischemic CMPs limit the thorough analysis of disease mechanisms and the evaluation of novel diagnostic and therapeutic strategies. This paper describes a national, prospective, multicenter registry for patients with non-ischemic CMPs...
August 2017: ESC Heart Failure
https://www.readbyqxmd.com/read/28767543/lactate-and-immunosuppression-in-sepsis
#10
Benjamin Nolt, Fei Tu, Xiaohui Wang, Tuanzhu Ha, Randi Winter, David L Williams, Chuanfu Li
Serum lactate levels are traditionally interpreted as a marker of tissue hypoxia and often used clinically as an indicator of severity and outcome of sepsis/septic shock. Interestingly, recent studies involving the effects of tumor-derived lactate suggest that lactate itself may have an immunosuppressive effect in its local environment. This finding adds to the recent advances in immunometabolism that shed light on the importance of metabolism and metabolic intermediates in the regulation of innate immune and inflammatory responses in sepsis...
August 1, 2017: Shock
https://www.readbyqxmd.com/read/28756705/raman-microspectroscopic-mapping-with-multivariate-curve-resolution-alternating-least-squares-mcr-als-applied-to-the-high-pressure-polymorph-of-titanium-dioxide-tio2-ii
#11
Joseph P Smith, Frank C Smith, Joshua Ottaway, Alexandra E Krull-Davatzes, Bruce M Simonson, Billy P Glass, Karl S Booksh
The high-pressure, α-PbO2-structured polymorph of titanium dioxide (TiO2-II) was recently identified in micrometer-sized grains recovered from four Neoarchean spherule layers deposited between ∼2.65 and ∼2.54 billion years ago. Several lines of evidence support the interpretation that these layers represent distal impact ejecta layers. The presence of shock-induced TiO2-II provides physical evidence to further support an impact origin for these spherule layers. Detailed characterization of the distribution of TiO2-II in these grains may be useful for correlating the layers, estimating the paleodistances of the layers from their source craters, and providing insight into the formation of the TiO2-II...
August 2017: Applied Spectroscopy
https://www.readbyqxmd.com/read/28754662/shock-absorbing-aggregates-beneath-playground-equipment-grain-properties-and-moisture-content
#12
Tapani Jäniskangas, Kari P K Pylkkänen, Pauli Kolisoja
OBJECTIVES: To assess the influence of grain size distribution and moisture condition on aggregates' performance as an impact attenuation layer beneath playground equipment. SETTING AND METHODS: Impact attenuation of sands and gravels was tested using a guided headform with a uniaxial accelerometer inside. The result for impact attenuation was the acceleration value of the headform measured from four different drop heights and the Head Injury Criterion (HIC) calculated from it...
July 28, 2017: Injury Prevention: Journal of the International Society for Child and Adolescent Injury Prevention
https://www.readbyqxmd.com/read/28754407/punishment-of-alcohol-reinforced-responding-in-alcohol-preferring-p-rats-reveals-a-bimodal-population-implications-for-models-of-compulsive-drug-seeking
#13
Nathan J Marchant, Erin J Campbell, Konstantin Kaganovsky
Individual variations in animal behaviour can be used to describe relationships between different constructs, as well as the underlying neurobiological mechanisms responsible for such variation. In humans, variation in the expression of certain traits contributes to the onset of psychopathologies, such as drug addiction. Addiction is characterised by persistent drug use despite negative consequences, but it occurs in only a sub-population of drug users. Compulsive drug use is modelled in laboratory animals by punishing a drug-reinforced operant response...
July 25, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28748176/global-epidemiology-of-dengue-outbreaks-in-1990-2015-a-systematic-review-and-meta-analysis
#14
Congcong Guo, Zixing Zhou, Zihao Wen, Yumei Liu, Chengli Zeng, Di Xiao, Meiling Ou, Yajing Han, Shiqi Huang, Dandan Liu, Xiaohong Ye, Xiaoqian Zou, Jing Wu, Huanyu Wang, Eddy Y Zeng, Chunxia Jing, Guang Yang
Dengue is an arthropod-borne infectious disease caused by dengue virus (DENV) infection and transmitted by Aedes mosquitoes. Approximately 50-100 million people are infected with DENV each year, resulting in a high economic burden on both governments and individuals. Here, we conducted a systematic review and meta-analysis to summarize information regarding the epidemiology, clinical characteristics, and serotype distribution and risk factors for global dengue outbreaks occurring from 1990 to 2015. We searched the PubMed, Embase and Web of Science databases through December 2016 using the term "dengue outbreak...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28747872/l-3-n-butylphthalide-protects-hspb8-k141n-mutation-induced-oxidative-stress-by-modulating-the-mitochondrial-apoptotic-and-nrf2-pathways
#15
Xiao-Dong Yang, Zhi-Dong Cen, Hai-Peng Cheng, Kai Shi, Jie Bai, Fei Xie, Hong-Wei Wu, Bei-Bei Li, Wei Luo
Charcot-Marie-Tooth disease (CMT), also known as hereditary motor and sensory neuropathy, is the most common inherited peripheral nerve disorder. Missense mutations, such as K141N, in the small heat shock protein HSPB8 are known to cause distal hereditary motor neuropathy 2A (dHMN2A) or Charcot-Marie-Tooth neuropathy type 2L (CMT2L). However, of critical clinical significance, very few specific therapies for this disease exist. In the present study, we investigated the impact of mutant K141N HSPB8 on mitochondrial distribution and function in a cellular model of CMT2L...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28739362/stroke-in-ehlers-danlos-syndrome-kyphoscoliotic-type-dissection-or-vasculitis
#16
Annegret Quade, Martin Wiesmann, Joachim Weis, Ingo Kurth, Houman Jalaie, Marianne Rohrbach, Martin Häusler
BACKGROUND: Patients with the kyphoscoliotic type of Ehlers-Danlos syndrome have an increased risk of vascular complications such as aortic dissection and perforation. Cerebral ischemia has only rarely been documented. PATIENT DESCRIPTION: This 13-year-old girl with the kyphoscoliotic type of Ehlers-Danlos syndrome had a large right middle cerebral artery distribution infarction. Full intravenous heparinization was started in response to presumed arterial dissection...
May 29, 2017: Pediatric Neurology
https://www.readbyqxmd.com/read/28736567/dynamics-of-calcium-during-in-vitro-microspore-embryogenesis-and-in-vivo-microspore-development-in-brassica-napus-and-solanum-melongena
#17
Alba Rivas-Sendra, Antonio Calabuig-Serna, Jose M Seguí-Simarro
Calcium is widely known to have a role as a signaling molecule in many different processes, including stress response and activation of the embryogenic program. However, there are no direct clues about calcium levels during microspore embryogenesis, an experimental process that combines a developmental switch toward embryogenesis and the simultaneous application of different stressing factors. In this work, we used FluoForte, a calcium-specific fluorescent vital dye, to track by confocal microscopy the changes in levels and subcellular distribution of calcium in living rapeseed (B...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28736557/the-effect-of-admission-renal-function-on-the-treatment-and-outcome-of-patients-with-acute-coronary-syndrome
#18
Zach Rozenbaum, Sydney Benchetrit, Saar Minha, Yoram Neuman, Meital Shlezinger, Ilan Goldenberg, Morris Mosseri, David Pereg
BACKGROUND: Chronic kidney disease is a frequent comorbidity among patients with acute coronary syndrome (ACS). We aimed to evaluate treatment characteristics in ACS patients according to their renal function and to assess the effect of differences in therapy on clinical outcomes. METHODS: Included were patients with ACS enrolled in the biennial Acute Coronary Syndrome Israeli Surveys (ACSIS) during 2000-2013. Excluded were patients with cardiogenic shock at presentation...
June 2017: Cardiorenal Medicine
https://www.readbyqxmd.com/read/28734575/outcomes-associated-to-serum-phosphate-levels-in-patients-with-suspected-acute-coronary-syndrome
#19
Hong Xu, Marie Evans, Alessandro Gasparini, Karolina Szummer, Jonas Spaak, Johan Ärnlöv, Bengt Lindholm, Tomas Jernberg, Juan Jesús Carrero
BACKGROUND: We investigated the association between phosphate and the risk of adverse clinical outcomes in patients with manifest cardiovascular disease (CVD). METHODS: Observational study of patients hospitalized during 2006-2011 in Stockholm, Sweden, because of suspected acute coronary syndrome (ACS). The exposure was serum phosphate during the hospitalization. We modeled the association between phosphate and in-hospital death or in-hospital events (composite of myocardial infarction, cardiogenic shock, resuscitated cardiac arrest, atrial fibrillation, or atrioventricular block) as well as the one-year post-discharge risk of death or cardiovascular event (composite of myocardial re-infarction, heart failure and stroke)...
July 17, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28729925/patterns-of-production-of-collagen-rich-deposits-in-peripheral-nerves-in-response-to-injury-a-pilot-study-in-a-rabbit-model
#20
Michael Rivlin, Andrew Miller, Jacob Tulipan, Pedro K Beredjiklian, Mark L Wang, Jolanta Fertala, Andrzej Steplewski, James Kostas, Andrzej Fertala
INTRODUCTION: Although collagen-rich deposits are the main component of neural scars, the patterns of their formation are ill defined. Essential to the biosynthesis of collagen fibrils are enzymes catalyzing posttranslational modifications and chaperones that control the formation of the collagen triple helix. Prolyl-4-hydroxylase (P4H) and heat shock protein-47 (HSP47) play a key role, and their production is upregulated during scar formation in human tissues. Alpha smooth muscle actin (αSMA) is also produced during fibrotic processes in myofibroblasts that participate in fibrotic response...
July 2017: Brain and Behavior
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