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https://www.readbyqxmd.com/read/28098882/downregulation-of-microrna%C3%A2-34b-is-responsible-for-the-elevation-of-blood-pressure-in-spontaneously-hypertensive-rats
#1
Fan Yang, Haiyu Li, Youyou Du, Qiangwei Shi, Luosha Zhao
The present study aimed to identify the microRNA (miRNA) responsible for the development of primary hypertension, and examine the downstream signaling pathway, which mediates the effect of the miRNA. Reverse transcription‑quantitative polymerase chain reaction analysis was performed to identify which miRNA may be involved in the pathogenesis of hypertension. In silico analysis and a luciferase assay were used to validate the target of the selected miRNA, and miRNA mimics and small interfering (si)RNA of the target were transfected into smooth muscle cells to examine its effect on the biological activity of the cells...
January 16, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28098845/optical-tip-clearance-measurements-as-a-tool-for-rotating-disk-characterization
#2
Iker García, Joseba Zubia, Josu Beloki, Jon Arrue, Gaizka Durana, Gotzon Aldabaldetreku
An experimental investigation on the vibrational behavior of a rotating disk by means of three optical fiber sensors is presented. The disk, which is a scale model of the real disk of an aircraft engine, was assembled in a wind tunnel in order to simulate real operation conditions. The pressure difference between the upstream and downstream sides of the disk causes an airflow that might force the disk to vibrate. To characterize this vibration, a set of parameters was determined by measuring the tip clearance of the disk: the amplitude, the frequency and the number of nodal diameters in the disk...
January 15, 2017: Sensors
https://www.readbyqxmd.com/read/28098831/a-fast-multimodal-ectopic-beat-detection-method-applied-for-blood-pressure-estimation-based-on-pulse-wave-velocity-measurements-in-wearable-sensors
#3
Maik Pflugradt, Kai Geissdoerfer, Matthias Goernig, Reinhold Orglmeister
Automatic detection of ectopic beats has become a thoroughly researched topic, with literature providing manifold proposals typically incorporating morphological analysis of the electrocardiogram (ECG). Although being well understood, its utilization is often neglected, especially in practical monitoring situations like online evaluation of signals acquired in wearable sensors. Continuous blood pressure estimation based on pulse wave velocity considerations is a prominent example, which depends on careful fiducial point extraction and is therefore seriously affected during periods of increased occurring extrasystoles...
January 14, 2017: Sensors
https://www.readbyqxmd.com/read/28098801/a-novel-antihypertensive-derived-from-adlay-coix-larchryma-jobi-l-var-ma-yuen-stapf-glutelin
#4
Bin Li, Liansheng Qiao, Lingling Li, Yanling Zhang, Kai Li, Lingzhi Wang, Yanjiang Qiao
Our previous studies have shown that Coix glutelin pepsin hydrolysate can effectively inhibit angiotensin converting enzyme (ACE) activity in vitro. The main purpose of this study was to obtain potent anti-hypertensive peptides from Coix glutelin. The Coix glutelin hydrolysates (CGH) were prepared by pepsin catalysis and further separated by an ultrafitration (UF) system, gel filtration chromatography (GFC) and reversed-phase high performance liquid chromatography (RP-HPLC). As a result, the sub-fraction F5-3 had the highest ACE-inhibitory activity...
January 13, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28098771/breast-cancer-brain-metastases-clonal-evolution-in-clinical-context
#5
REVIEW
Jodi M Saunus, Amy E McCart Reed, Zhun Leong Lim, Sunil R Lakhani
Brain metastases are highly-evolved manifestations of breast cancer arising in a unique microenvironment, giving them exceptional adaptability in the face of new extrinsic pressures. The incidence is rising in line with population ageing, and use of newer therapies that stabilise metastatic disease burden with variable efficacy throughout the body. Historically, there has been a widely-held view that brain metastases do not respond to circulating therapeutics because the blood-brain-barrier (BBB) restricts their uptake...
January 13, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28098737/increased-intraocular-pressure-is-a-risk-factor-for-unexplained-visual-loss-during-silicone-oil-endotamponade
#6
Marvin Marti, Richard Walton, Christian Böni, Sandrine A Zweifel, Marc Stahel, Daniel Barthelmes
PURPOSE: To identify the incidence rate and risk factors for unexplained visual loss associated with silicone oil endotamponade used during primary repair of macula-sparing rhegmatogenous retinal detachments. METHODS: This retrospective cohort study included patients undergoing pars plana vitrectomy for primary surgical repair of macula-sparing rhegmatogenous retinal detachments in whom silicone oil endotamponade was used. The primary outcome measure was the incidence rate of unexplained visual loss and identification of risk factors associated with vision loss...
January 16, 2017: Retina
https://www.readbyqxmd.com/read/28098718/double-exposure-to-adverse-psychosocial-work-factors-and-high-family-responsibilities-as-related-to-ambulatory-blood-pressure-at-work-a-5-year-prospective-study-in-women-with-white-collar-jobs
#7
Mahée Gilbert-Ouimet, Chantal Brisson, Alain Milot, Michel Vézina
OBJECTIVE: Accumulating evidence shows that psychosocial work factors of the demand-control and effort-reward imbalance models may contribute to increase blood pressure (BP). Women are more likely to be exposed to these psychosocial factors than men. Moreover, women spend twice as much time per week performing family responsibilities than men. This study aims to evaluate the longitudinal association of the double exposure to psychosocial work factors and high family responsibilities in women with BP over a 5-year follow-up...
January 17, 2017: Psychosomatic Medicine
https://www.readbyqxmd.com/read/28098579/xen-gel-stent-internal-ostium-occlusion-ab-interno-revision
#8
Nuno Pinto Ferreira, Luis Abegão Pinto, Carlos Marques-Neves
Minimally invasive glaucoma surgery aims to provide a safer and less-invasive means of reducing IOP compared with traditional surgery, with the goal of reducing the need for topical medications. The XEN gel stent is an ab-interno minimally invasive glaucoma surgery device that approaches intraocular pressure reduction by creating a subconjunctival drainage pathway. As with any new device there is lack of experience and knowledge about its long-term results in terms of efficacy, technique, and complications...
January 16, 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/28098511/hemodynamic-effects-of-hpma-copolymer-based-doxorubicin-conjugate-a-randomized-controlled-and-comparative-spectral-study-in-conscious-rats
#9
Hoay Yan Cheah, Olivera Šarenac, Juan J Arroyo, Marko Vasić, Maja Lozić, Sofija Glumac, See Ziau Hoe, Charles Colin Thomas Hindmarch, David Murphy, Lik Voon Kiew, Hong Boon Lee, Marίa J Vicent, Lip Yong Chung, Nina Japundžić-Žigon
Conjugation of Doxorubicin (DOX) to N-(2-Hydroxypropyl) methylacrylamide copolymer (HPMA) has significantly reduced the DOX-associated cardiotoxicity. However, the reports on the impact of HPMA-DOX conjugates on the cardiovascular system such as blood pressure (BP) and heart rate (HR) were in restrained animals using tail cuff and/or other methods that lacked the resolution and sensitivity. Herein, we employed radiotelemetric-spectral-echocardiography approach to further understand the in vivo cardiovascular hemodynamics and variability post administration of free DOX and HPMA-DOX...
January 18, 2017: Nanotoxicology
https://www.readbyqxmd.com/read/28098504/effects-of-culturally-adaptive-walking-intervention-on-cardiovascular-disease-risks-for-middle-aged-korean-chinese-female-migrant-workers
#10
Hyeonkyeong Lee, Sunghye Cho, JoEllen Wilbur, Jung Hee Kim, Chang-Gi Park, Young-Me Lee, Haryong Lee
The purpose was to examine the effects of a standard treatment (ST) walking program compared to a ST walking program enhanced (Enhanced Treatment, ET) on cardiovascular health outcomes among Korean-Chinese female migrant workers in Korea. A quasi-experimental sequential design was used. A total of 132 Korean-Chinese women without contraindications to physical activity participated in the study. Both ST and ET groups had monthly goal settings and the ET group received text messages to encourage walking adherence and acculturation...
January 18, 2017: Archives of Environmental & Occupational Health
https://www.readbyqxmd.com/read/28098434/method-for-the-unique-identification-of-hyperelastic-material-properties-using-full-field-measures-application-to-the-passive-myocardium-material-response
#11
Luigi E Perotti, Aditya V Ponnaluri, Shankarjee Krishnamoorthi, Daniel Balzani, Daniel B Ennis, William S Klug
Quantitative measurement of the material properties (e.g., stiffness) of biological tissues is poised to become a powerful diagnostic tool. There are currently several methods in the literature to estimating material stiffness and we extend this work by formulating a framework that leads to uniquely identified material properties. We design an approach to work with full field displacement data - i.e., we assume the displacement field due to the applied forces is known both on the boundaries and also within the interior of the body of interest - and seek stiffness parameters that lead to balanced internal and external forces in a model...
January 18, 2017: International Journal for Numerical Methods in Biomedical Engineering
https://www.readbyqxmd.com/read/28098407/tumefactive-foreign-body-giant-cell-reaction-following-high-pressure-paint-injection-injury-a-case-report-and-review-of-literature
#12
Shakuntala H Mauzo, Michael Swaby, Michael Covinsky
High pressure paint injection injury is an uncommon but well-described injury. The histologic features of long-term paint injection injury with retained material are less recognized. A 46 year old male presented clinically as "recurrent giant cell tumor of tendon sheath". The right index finger demonstrated fusiform enlargement by a pigmented mass with diffuse infiltration into the soft tissue of the hand. Histologically the tumor showed multiple giant cells in a fibrotic stroma extending into the dermis. There were multiple types of foreign material including diffuse brown black pigment, weakly optically polarizing foreign material and white inclusions with a "train track" appearance...
January 18, 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28098353/the-role-of-various-peroxisome-proliferator-activated-receptors-and-their-ligands-in-clinical-practice
#13
REVIEW
Giuseppe Derosa, Amirhossein Sahebkar, Pamela Maffioli
Peroxisome proliferator-activated receptors (PPARs) are ligand-activated transcription factors involved in several physiological processes including modulation of cellular differentiation, development, metabolism of carbohydrates, lipids, proteins, and tumorigenesis. The aim of this review is to examine how different PPAR ligands act, and discuss their use in clinical practice. PPAR ligands have a lot of effects and applications in clinical practice. Some PPAR ligands such as fibrates (PPAR-α ligands) are currently used for the treatment of dyslipidemia, while pioglitazone and rosiglitazone (PPAR-γ ligands) are anti-diabetic and insulin-sensitizing agents...
January 18, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28098343/mn-accumulation-in-a-submerged-plant-egeria-densa-hydrocharitaceae-is-mediated-by-epiphytic-bacteria
#14
Kousuke Tsuji, Takuma Asayama, Nozomi Shiraki, Shota Inoue, Erina Okuda, Chizuru Hayashi, Kazuma Nishida, Hiroshi Hasegawa, Emiko Harada
Many aquatic plants act as biosorbents, removing and recovering metals from the environment. To assess the biosorbent activity of Egeria densa, a submerged freshwater macrophyte, plants were collected monthly from a circular drainage area in Lake Biwa basin and the Mn concentrations of the plants were analyzed. Mn concentrations in these plants were generally above those of terrestrial hyperaccumulators, and were markedly higher in spring and summer than in autumn. Mn concentrations were much lower in plants incubated in hydroponic medium at various pH levels with and without Mn supplementation than in field-collected plants...
January 18, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/28098339/the-effect-of-blue-light-on-stomatal-oscillations-and-leaf-turgor-pressure-in-banana-leaves
#15
Yotam Zait, Or Shapira, Amnon Schwartz
Stomatal oscillations are cyclic opening and closing of stomata, presumed to initiate from hydraulic mismatch between leaf water supply and transpiration rate. To test this assumption, mismatches between water supply and transpiration were induced using manipulations of VPD (vapor pressure deficit) and light spectrum in banana (Musa acuminata). Simultaneous measurements of gas exchange with changes in leaf turgor pressure were used to describe the hydraulic mismatches. An increase of VPD above a certain threshold, caused stomatal oscillations with variable amplitudes...
January 18, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/28098281/thermodynamic-stability-of-stoichiometric-lafeo3-and-bifeo3-a-hybrid-dft-study
#16
Eugene Heifets, Eugene A Kotomin, Alexander A Bagaturyants, Joachim Maier
BiFeO3 perovskite attracts great attention due to its multiferroic properties and potential use as a parent material for Bi1-xSrxFeO3-δ and Bi1-xSrxFe1-yCoyO3-δ solid solutions in intermediate temperature cathodes of oxide fuel cells. Another iron-based LaFeO3 perovskite is the end member for well-known solid solutions (La1-xSrxFe1-yCoyO3-δ) used for oxide fuel cells and other electrochemical devices. In this study an ab initio hybrid functional approach was used for the study of the thermodynamic stability of both LaFeO3 and BiFeO3 with respect to decompositions to binary oxides and to elements, as a function of temperature and oxygen pressure...
January 18, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28098211/deep-sea-crustacean-trawling-fisheries-in-portugal-quantification-of-effort-and-assessment-of-landings-per-unit-effort-using-a-vessel-monitoring-system-vms
#17
Juan Bueno-Pardo, Sofia P Ramalho, Ana García-Alegre, Mariana Morgado, Rui P Vieira, Marina R Cunha, Henrique Queiroga
Mapping and quantifying bottom trawling fishing pressure on the seafloor is pivotal to understand its effects on deep-sea benthic habitats. Using data from the Vessel Monitoring System of crustacean trawlers along the Portuguese margin, we have identified the most exploited areas and characterized the most targeted habitats and water depths. We estimated a total trawling effort of 69596, 66766, and 63427 h y(-1) for the years 2012, 2013, and 2014 respectively which, considering the total landings estimated for this gear, yield values of 20...
January 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28098208/high-efficiency-hydrodynamic-dna-fragmentation-in-a-bubbling-system
#18
Lanhui Li, Mingliang Jin, Chenglong Sun, Xiaoxue Wang, Shuting Xie, Guofu Zhou, Albert van den Berg, Jan C T Eijkel, Lingling Shui
DNA fragmentation down to a precise fragment size is important for biomedical applications, disease determination, gene therapy and shotgun sequencing. In this work, a cheap, easy to operate and high efficiency DNA fragmentation method is demonstrated based on hydrodynamic shearing in a bubbling system. We expect that hydrodynamic forces generated during the bubbling process shear the DNA molecules, extending and breaking them at the points where shearing forces are larger than the strength of the phosphate backbone...
January 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28098201/fiber-laser-based-ultrasound-sensor-for-photoacoustic-imaging
#19
Yizhi Liang, Long Jin, Lidai Wang, Xue Bai, Linghao Cheng, Bai-Ou Guan
Photoacoustic imaging, especially for intravascular and endoscopic applications, requires ultrasound probes with miniature size and high sensitivity. In this paper, we present a new photoacoustic sensor based on a small-sized fiber laser. Incident ultrasound waves exert pressures on the optical fiber laser and induce harmonic vibrations of the fiber, which is detected by the frequency shift of the beating signal between the two orthogonal polarization modes in the fiber laser. This ultrasound sensor presents a noise-equivalent pressure of 40 Pa over a 50-MHz bandwidth...
January 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28098192/wearable-atmospheric-pressure-plasma-fabrics-produced-by-knitting-flexible-wire-electrodes-for-the-decontamination-of-chemical-warfare-agents
#20
Heesoo Jung, Jin Ah Seo, Seungki Choi
One of the key reasons for the limited use of atmospheric pressure plasma (APP) is its inability to treat non-flat, three-dimensional (3D) surface structures, such as electronic devices and the human body, because of the rigid electrode structure required. In this study, a new APP system design-wearable APP (WAPP)-that utilizes a knitting technique to assemble flexible co-axial wire electrodes into a large-area plasma fabric is presented. The WAPP device operates in ambient air with a fully enclosed power electrode and grounded outer electrode...
January 18, 2017: Scientific Reports
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