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https://www.readbyqxmd.com/read/28634047/the-study-of-the-intervertebral-disc-microstructure-in-matured-rats-with-diffusion-kurtosis-imaging
#1
Li Li, Wenzhen Zhu, Weiwei Chen, Jicheng Fang, Jing Li
OBJECTIVES: The aim of this study was to use DKI to detect the microstructural change of the discs in matured normal rats. METHODS: Total 24 normal SD rats (12 males/12 females) underwent DWI/DKI and T2 sequences with a 3T MRI scanner to get the values of ADC, FA, MD, Da, Dr, MK, Ka and Kr. The discs were categorized using a five-grade degeneration grading system in the T2-images. The height of the discs and the parameters in DWI/DKI were measured to compare between the different grades and sexes...
June 17, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/28632493/interplay-between-papp-a-inflammation-and-adiposity-in-patients-with-angiographically-proven-acute-coronary-syndrome-acs
#2
Khageshwar Mahato, Moushumi Lodh, Ashok Parida, Ashok Kr Ahirwar, Rashmi Rasi Datta, Binita Goswami
Introduction Studies conducted in the recent past have demonstrated the role of inflammation, obesity and dysfunctional insulin signaling as contributing factors in the pathogenesis of acute coronary syndrome (ACS). However, pharmacological interventions targeting a single pathway have not proven useful in the long run. This indicates that a synergism occurs between the various risk factors and hence calls for a combinatorial approach. This study was planned to study the interplay, if any, between pregnancy associated plasma protein-A (PAPP-A), inflammation and adiposity in patients with ACS...
June 21, 2017: Hormone Molecular Biology and Clinical Investigation
https://www.readbyqxmd.com/read/28631924/insight-into-the-bonding-mechanism-and-the-bonding-covalency-in-noble-gas-noble-metal-halides-an-nbo-nrt-investigation
#3
Guiqiu Zhang, Lei Fu, Hong Li, Xuchan Fan, De-Zhan Chen
The bonding between noble gas and noble metal halide like hydrogen bonding (H-bonding) motivates us to investigate the bonding mechanism and the bonding covalency in NgMX (Ng = He, Ne, Ar, Kr, Xe, Rn; M = Cu, Ag, Au; X = F, Cl, Br, I) complexes using Natural Bond Orbital (NBO) and Natural Resonance Theory (NRT) methods. In this study, we introduce the new resonance bonding model in H-bonding into NgMX bonding. We provide strong evidence for resonance bonding involving two important resonance structures: Ng: M-X ↔ Ng(+)-M :X(-) in each of NgMX complexes, originating in the nNg→σ*MX hyperconjugative interaction...
June 20, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28631592/blastomonas-quesadae-sp-nov-isolated-from-a-saline-soil-by-dilution-to-extinction-cultivation
#4
David J Castro, Inmaculada Llamas, Victoria Béjar, Fernando Martínez-Checa
We isolated a Gram-stain-negative, aerobic bacterial strain, 912T, from a soil sample taken from Rambla Salada (Murcia), south-eastern Spain, by using the dilution-to-extinction method. Cells of the strain were motile with a polar flagellum, short rod-shaped, catalase- and oxidase-positive and grew at NaCl concentrations within the range 0-5 % (w/v) (optimum 3 %, w/v), at 4-32 °C (optimum 30 °C) and at pH 6-9 (optimum pH 7); bacteriochlorophyll a was produced. Analysis of the 16S rRNA gene sequence indicated that this strain belonged to the genus Blastomonas in the class Alphaproteobacteria...
June 20, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28626989/electrical-isolation-of-the-left-atrial-appendage-by-maze-like-catheter-substrate-modification-a-reproducible-strategy-for-pulmonary-vein-isolation-non-responders
#5
Stefano Bordignon, Laura Perrotta, Daniela Dugo, Fabrizio Bologna, Takahiko Nagase, Alexander Fuernkranz, Kr Julian Chun, Boris Schmidt
INTRODUCTION: The ablation strategy for atrial fibrillation (AF) despite pulmonary vein isolation (PVI) is controversial. Left atrial appendage isolation (LAAI) may contribute to improve outcome. We describe an ablation approach ("Maze-like"-LAAI) that (1) modifies the underlying LA substrate by linear ablation (2) eliminates the LAA as a putative AF trigger site and (3) incorporates an unambiguous procedural endpoint. The role of LAA closure (LAAC) after LAAI was investigated. METHODS: Patients with atrial tachyarrhythmias non-responsive to PVI underwent a LAAI ablation procedure...
June 19, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28625810/evaluating-the-ototoxicity-of-a-anti-mrsa-peptide-kr-12-a2
#6
Chung Man Sung, Hong Chan Kim, Yong Beom Cho, Song Yub Shin, Chul Ho Jang
INTRODUCTION: Methicillin-Resistant Staphylococcus aureus (MRSA) is an emerging problem for the treatment of chronic suppurative otitis media, and also for pediatric tympanostomy tube otorrhea. To date, there are no effective topical antibiotic drugs to treat MRSA otorrhea. OBJECTIVE: In this study, we evaluated the ototoxicity of topical KR-12-a2 solution on the cochlea when it applied topically in the middle ear of guinea pigs. METHODS: The antimicrobial activity of KR-12-a2 against MRSA strains was examined by using the inhibition zone test...
May 31, 2017: Brazilian Journal of Otorhinolaryngology
https://www.readbyqxmd.com/read/28625788/structural-and-functional-trends-in-dehydrating-bimodules-from-trans-acyltransferase-polyketide-synthases
#7
Drew T Wagner, Jia Zeng, Constance B Bailey, Darren C Gay, Fang Yuan, Hannah R Manion, Adrian T Keatinge-Clay
In an effort to uncover the structural motifs and biosynthetic logic of the relatively uncharacterized trans-acyltransferase polyketide synthases, we have begun the dissection of the enigmatic dehydrating bimodules common in these enzymatic assembly lines. We report the 1.98 Å resolution structure of a ketoreductase (KR) from the first half of a type A dehydrating bimodule and the 2.22 Å resolution structure of a dehydratase (DH) from the second half of a type B dehydrating bimodule. The KR, from the third module of the bacillaene synthase, and the DH, from the tenth module of the difficidin synthase, possess features not observed in structurally characterized homologs...
June 7, 2017: Structure
https://www.readbyqxmd.com/read/28624536/microrna-dependent-regulation-of-metamorphosis-and-identification-of-micrornas-in-the-red-flour-beetle-tribolium-castaneum
#8
Wei Wu, Wenfeng Xiong, Chengjun Li, Mengfan Zhai, Yao Li, Fei Ma, Bin Li
To date, although some microRNAs (miRNAs) have been discovered in the holometabolism insect Tribolium castaneum, large numbers of miRNAs still require investigation. Knocking down Dicer-1 (Dcr-1) and Argonaute-1 (Ago-1) in late larvae impaired miRNA synthesis, affected the juvenile hormone pathway by up-regulating Methoprene-tolerant (Met) and Krüppel-homolog1 (Kr-h1) transcript levels, and resulted in a series of defects in T. castaneum development and metamorphosis. Thus, high-throughput Illumina/Solexa sequencing was performed with a mixed sample of eight key developmental stages of T...
June 14, 2017: Genomics
https://www.readbyqxmd.com/read/28624113/pi-controller-design-for-indirect-vector-controlled-induction-motor-a-decoupling-approach
#9
Jitendra Kr Jain, Sandip Ghosh, Somnath Maity, Pawel Dworak
Decoupling of the stator currents is important for smoother torque response of indirect vector controlled induction motors. Typically, feedforward decoupling is used to take care of current coupling that requires exact knowledge of motor parameters, additional circuitry and signal processing. In this paper, a method is proposed to design the regulating proportional-integral gains that minimize coupling without any requirement of the additional decoupler. The variation of the coupling terms for change in load torque is considered as the performance measure...
June 14, 2017: ISA Transactions
https://www.readbyqxmd.com/read/28623918/effects-of-herbal-medicine-for-dysmenorrhea-treatment-on-accompanied-acne-vulgaris-a-study-protocol-for-a-randomized-controlled-trial
#10
Kwan-Il Kim, Hae Jeong Nam, Mia Kim, Junhee Lee, Kyuseok Kim
BACKGROUND: The incidence of preadolescent acne among women is increasing. Acne deteriorates the quality of life; conventional treatment options are limited and have not been effective against acne, particularly acne associated with menstruation. Despite evidence that acne associated with menstruation abnormalities naturally improves when menstruation recovers to normal, there have only been few studies on the effects of dysmenorrhea treatment on acne. Therefore- we designed this study to assess the effects of gyejibokryung-hwan (GBH) and dangguijagyag-san (DJS), which are widely used in dysmenorrhea treatment, on acne associated with menstruation cycle...
June 17, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28621513/topological-insulator-bi2se3-si-nanowires-based-p-n-junction-diode-for-high-performance-near-infrared-photodetector
#11
Biswajit Das, Nirmalya Sankar Das, Samrat Sarkar, Biplab Kr Chatterjee, Kalyan Kumar Chattopadhyay
Chemically derived topological insulator Bi2Se3nanoflake/ Si nanowire (SiNWs) heterojunctions were fabricated employing all eco-friendly cost effective chemical route for the first time. X-ray diffraction studies confirmed proper phase formation of Bi2Se3nanoflakes. The morphological features of the individual components and time evolved hybrid structures were studied using field emission scanning electron microscope. High resolution transmission electronic microscopic studies were performed to investigate the actual nature of junction whereas elemental distributions at junction along with overall stoichiometry of the samples were analyzed using energy dispersive x-ray studies...
June 16, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28615923/changes-in-meibomian-gland-morphology-and-ocular-higher-order-aberrations-in-eyes-with-chalazion
#12
Shima Fukuoka, Reiko Arita, Rika Shirakawa, Naoyuki Morishige
PURPOSE: To examine the changes in meibomian gland morphology and ocular higher-order aberrations (HOAs) in eyes with chalazion and its excision. METHODS: Seven male patients with previous history of chalazion excision and seven control male subjects were enrolled. Changes in meibomian gland morphology (meiboscores, gland dropout, and shortening) were evaluated by using meibography equipped in a wavefront analyzer KR-1W and in a slit-lamp device BG-4M. Ocular HOAs were measured sequentially with KR-1W...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28613240/an-isoform-of-nedd4-2-plays-a-pivotal-role-in-electrophysiological-cardiac-abnormalities
#13
Shintaro Minegishi, Tomoaki Ishigami, Hisho Kawamura, Tabito Kino, Lin Chen, Rie Nakashima-Sasaki, Hiroshi Doi, Kengo Azushima, Hiromichi Wakui, Yumi Chiba, Kouichi Tamura
We have previously shown that neural precursor cell-expressed developmentally downregulated gene 4-2 (Nedd4-2) isoforms with a C2 domain are closely related to ubiquitination of epithelial sodium channel (ENaC), resulting in salt-sensitive hypertension by Nedd4-2 C2 targeting in mice. The sodium voltage-gated channel alpha subunit 5 (SCN5A) gene encodes the α subunit of the human cardiac voltage-gated sodium channel (I Na), and the potassium voltage-gated channel subfamily H member 2 (KCNH2) gene encodes rapidly activating delayed rectifier K channels (I Kr)...
June 14, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28612030/effect-of-gamma-rays-on-sophora-davidii-and-detection-of-dna-polymorphism-through-issr-marker
#14
Puchang Wang, Yu Zhang, Lili Zhao, Bentian Mo, Tianqiong Luo
Sophora davidii (Franch.) Kom. ex Pavol is an important medicinal plant and a feeding scrub with ecological value. The effects of different gamma irradiation doses (20-140 Kr) on seed germination and seedling morphology were investigated in S. davidii, and intersimple sequence repeat (ISSR) markers were used to identify the DNA polymorphism among mutants. Significant variations were observed for seed germination, stem diameter, and number of branches per plant. The improved agronomic traits, such as stem diameter and number of branches per plant, were recorded at 80 Kr dose and 20 Kr dose for seed germination...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28606063/on-predicting-time-to-completion-for-the-first-stage-of-spontaneous-labor-at-term-in-multiparous-women
#15
Björn Gunnarsson, Eirik Skogvoll, Ingibjörg Hanna Jónsdóttir, Jo Røislien, Alexander Kr Smárason
BACKGROUND: Labor that progresses faster than anticipated may lead to unplanned out-of-hospital births. With the aim to improve planning of transportation to birthing institutions, this study investigated predictors of time to completion for the first stage of labor conditional on cervical opening (conditional time) in multiparous women at term. METHODS: We performed a retrospective analysis of partograms for women in Robson's group 3 who delivered at one hospital from 2003 to 2013...
June 12, 2017: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/28604745/the-proto-oncoprotein-kr-pok-represses-transcriptional-activation-of-cdkn1a-by-miz-1-through-competitive-binding
#16
K M Lee, W I Choi, D I Koh, Y J Kim, B N Jeon, J H Yoon, C E Lee, S H Kim, J Oh, M W Hur
This corrects the article DOI: 10.1038/onc.2011.331.
June 12, 2017: Oncogene
https://www.readbyqxmd.com/read/28601707/enhancement-of-biocompatibility-and-photoacoustic-contrast-activity-of-metal-clusters
#17
Arijit Bag, Pradip Kr Ghorai
Organometallic carbonyl clusters (OMCC) of group VIII elements are water soluble, bio-compatible and stable high-contrast photoacoustic agents for live cell imaging. But, they have limited application due to weak absorption within 700-1000nm wavelength which is known as the biological window of absorption. In this article, we report that hexa-nuclear iron (Fe6) carbonyl cluster derivatized with sodium thio-propanoate has very good absorption within 700-1600nm wave length. This modeled compound is water soluble and bio-compatible...
May 19, 2017: Journal of Molecular Graphics & Modelling
https://www.readbyqxmd.com/read/28600227/mirtarvis-web-based-interactive-visual-analytics-tool-for-microrna-target-predictions
#18
Sehi L'Yi, Daekyoung Jung, Minsik Oh, Bohyoung Kim, Robert J Freishtat, Mamta Giri, Eric Hoffman, Jinwook Seo
In this paper, we present miRTarVis+, a Web-based interactive visual analytics tool for miRNA target predictions and integrative analyses of multiple prediction results. Various microRNA (miRNA) target prediction algorithms have been developed to improve sequence-based miRNA target prediction by exploiting miRNA-mRNA expression profile data. There are also a few analytics tools to help researchers predict targets of miRNAs. However, there still is a need for improving the performance for miRNA prediction algorithms and more importantly for interactive visualization tools for an integrative analysis of multiple prediction results...
June 6, 2017: Methods: a Companion to Methods in Enzymology
https://www.readbyqxmd.com/read/28599689/aspartic-acid-racemization-with-correlation-to-age-aforensic-perspective
#19
Qudsia Hassan, Allah Rakha, M Zahid Bashir
OBJECTIVE: To estimate age through aspartic acid racemization of human dentin for forensic analysis, and to calculate the margin of error between chronological age and estimated age by racemization method. STUDY DESIGN: Cross-sectional comparative study. PLACE AND DURATION OF STUDY: Dental Outpatients' Department, Ziauddin Hospital, Karachi, from 2011 to 2014. METHODOLOGY: Patients from dental orthodontics department were selected...
May 2017: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/28588690/insight-into-the-binding-interaction-of-kaempferol-7-o-%C3%AE-l-rhamnopyranoside-with-human-serum-albumin-by-multiple-fluorescence-spectroscopy-and-molecular-modeling
#20
Wenting Zhang, Chun Chen, Chunping Zhang, Jingyu Duan, Huankai Yao, Yan Li, Aiguo Meng, Jun Shi
Human serum albumin (HSA) is a transporting protein that has multiple functions. The binding interaction between HSA and small molecules affects its function and efficacy of small molecules. The present study reports that kaempferol-7-O-α-L-rhamnopyranoside (KR) interacts with HSA as indicated by multiple fluorescence spectroscopy and molecular modeling. KR can quench the intrinsic fluorescence of HSA through the formation of a KR-HSA complex in a static manner. In addition, the binding site is located in subdomain IIA as confirmed by competitive experiments using site-specific warfarin and ibuprofen, and the driving forces include hydrogen bonds, van der Waals forces and electrostatic interaction derived from a thermodynamic analysis...
June 2017: Experimental and Therapeutic Medicine
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