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https://www.readbyqxmd.com/read/28814070/hpv-genotype-specific-persistence-and-potential-risk-factors-among-korean-women-results-from-a-2-year-follow-up-study
#1
Cecile Ingabire, Min Kyung Lim, Young-Joo Won, Jin-Kyoung Oh
Purpose: High-risk human papilloma virus (HPV) infection progression should be considered a critical factor for preventing cervical cancer, although most infections are transient and rarely persist. This study aimed to examine the specific types of HPV infections, their change patterns, and the potential risk factors among Korean women. Materials and Methods: We included 4,588 women who visited hospitals in Busan and Suwon for cervical cancer screening, and 1,224 of these women attended a 2-year follow-up...
August 17, 2017: Cancer Research and Treatment: Official Journal of Korean Cancer Association
https://www.readbyqxmd.com/read/28813869/effects-of-assistance-timing-on-metabolic-cost-assistance-power-and-gait-parameters-for-a-hip-type-exoskeleton
#2
Jusuk Lee, Keehong Seo, Bokman Lim, Junwon Jang, Kyungrock Kim, Hyundo Choi
There are many important factors in developing an exoskeleton for assisting human locomotion. For example, the weight should be sufficiently light, the assist torque should be high enough to assist joint motion, and the assistance timing should be just right. Understanding how these design parameters affect overall performance of a complex human-machine system is critical for the development of these types of systems. The present study introduces an assistance timing controller that regulates assistance timing such that peak joint velocity and peak assistance power are offset by a reference value for our hip-type exoskeleton...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813595/activation-of-a-nickel-based-oer-catalyst-on-a-hematite-photoanode-via-incorporation-of-cerium-for-photoelectrochemical-water-oxidation
#3
Hyungseob Lim, Jae Young Kim, Edward J Evans, Amritesh Rai, Jun-Hyuk Kim, Bryan R Wygant, Charles Buddie Mullins
There has been debate on whether Ni(OH)2 is truly catalytically active for the photo/-electrocatalytic oxygen evolution reaction. In this report, we have synthesized a Ni(OH)2 co-catalyst on a hematite photoanode and showed that, as has been proposed in other studies, the current density varies as a function of scan rate, which arise due to a photo-induced capacitive charging effect. We have discovered that this photo-induced charging of Ni2+/3+ can be overcome by mixing cerium nitrate into the Ni precursor solution...
August 16, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28813482/cysteine-rich-protein-2-accelerates-actin-filament-cluster-formation
#4
Takanori Kihara, Yasunobu Sugimoto, Satoko Shinohara, Shunpei Takaoka, Jun Miyake
Filamentous actin (F-actin) forms many types of structures and dynamically regulates cell morphology and movement, and plays a mechanosensory role for extracellular stimuli. In this study, we determined that the smooth muscle-related transcription factor, cysteine-rich protein 2 (CRP2), regulates the supramolecular networks of F-actin. The structures of CRP2 and F-actin in solution were analyzed by small-angle X-ray solution scattering (SAXS). The general shape of CRP2 was partially unfolded and relatively ellipsoidal in structure, and the apparent cross sectional radius of gyration (Rc) was about 15...
2017: PloS One
https://www.readbyqxmd.com/read/28813012/inhibitory-effect-of-lycopene-on-amyloid-%C3%AE-induced-apoptosis-in-neuronal-cells
#5
Sinwoo Hwang, Joo Weon Lim, Hyeyoung Kim
Alzheimer's disease (AD) is a fatal neurodegenerative disease. Brain amyloid-β deposition is a crucial feature of AD, causing neuronal cell death by inducing oxidative damage. Reactive oxygen species (ROS) activate NF-κB, which induces expression of Nucling. Nucling is a pro-apoptotic factor recruiting the apoptosome complex. Lycopene is an antioxidant protecting from oxidative stress-induced cell damage. We investigated whether lycopene inhibits amyloid-β-stimulated apoptosis through reducing ROS and inhibiting mitochondrial dysfunction and NF-κB-mediated Nucling expression in neuronal SH-SY5Y cells...
August 16, 2017: Nutrients
https://www.readbyqxmd.com/read/28813001/dual-band-band-pass-filter-with-fixed-low-band-and-fluidically-tunable-high-band
#6
Eiyong Park, Daecheon Lim, Sungjoon Lim
In this work, we present a dual-band band-pass filter with fixed low-band resonant frequency and tunable high-band resonant frequency. The proposed filter consists of two split-ring resonators (SRRs) with a stub and microfluidic channels. The lower resonant frequency is determined by the length of the SRR alone, whereas the higher resonant frequency is determined by the lengths of the SRR and the stub. Using this characteristic, we fix the lower resonant frequency by fixing the SRR length and tune the higher resonant frequency by controlling the stub length by injecting liquid metal in the microfluidic channel...
August 16, 2017: Sensors
https://www.readbyqxmd.com/read/28812199/complete-genome-sequence-of-a-putative-new-caulimovirus-which-exists-as-endogenous-pararetroviral-sequences-in-angelica-dahurica
#7
Seungmo Lim, Dasom Baek, Davaajargal Igori, Jae Sun Moon
A virus isolate designated Angelica bushy stunt virus (AnBSV), provisionally representing a new species in the genus Caulimovirus, was discovered in the medicinal plant Angelica dahurica. The complete 8,300-nt genomic DNA of AnBSV had seven putative open reading frames containing conserved domains/motifs, which are typical features of caulimoviruses, and showed the greatest nucleotide sequence identity (74% identity and 27% query coverage) to a lamium leaf distortion virus isolate. Interestingly, the new caulimovirus exists as endogenous pararetroviral sequences in the host plant and is considered to have multiple defective plant genome-integrated copies that may lead to the generation of subgenomic DNA species...
August 10, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28811756/pseudomonas-oleovorans-strain-kbpf-004-culture-supernatants-reduced-seed-transmission-of-cucumber-green-mottle-mosaic-virus-and-pepper-mild-mottle-virus-and-remodeled-aggregation-of-126-kda-and-subcellular-localization-of-movement-protein-of-pepper-mild-mottle
#8
Nam-Gyu Kim, Eun-Young Seo, Sang-Hyuk Han, Jun-Su Gong, Cheol-Nam Park, Ho-Seop Park, Leslie L Domier, John Hammond, Hyoun-Sub Lim
Efforts to control viral diseases in crop production include several types of physical or chemical treatments; antiviral extracts of a number of plants have also been examined to inhibit plant viral infection. However, treatments utilizing naturally selected microorganisms with activity against plant viruses are poorly documented. Here we report isolation of a soil inhabiting bacterium, Pseudomonas oleovorans strain KBPF-004 (developmental code KNF2016) which showed antiviral activity against mechanical transmission of tobamoviruses...
August 2017: Plant Pathology Journal
https://www.readbyqxmd.com/read/28811650/diet-induced-obesity-leads-to-metabolic-dysregulation-in-offspring-via-endoplasmic-reticulum-stress-in-a-sex-specific-manner
#9
J H Park, Y Yoo, M Cho, J Lim, A M Lindroth, Y J Park
BACKGROUND/OBJECTIVES: Exposure to metabolic stress has been suggested to influence the susceptibility to metabolic disorders in offspring according to epidemiological and animal studies. Nevertheless, molecular mechanisms remain unclear. We investigated impacts of diet-induced paternal obesity on metabolic phenotypes in offspring and its underlying molecular mechanism. SUBJECTS/METHODS: Male founder mice (F0), fed with control diet (CD) or high fat diet (HFD), were mated with CD-fed females...
August 16, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28811325/ppar%C3%AE-ligand-induced-annexin-a1-expression-determines-chemotherapy-response-via-deubiquitination-of-death-domain-kinase-rip-in-triple-negative-breast-cancers
#10
Luxi Chen, Yi Yuan, Shreya Kar, Madhu M Kanchi, Suruchi Arora, Ji E Kim, Pei F Koh, Einas Yousef, Ramar P Samy, Muthu K Shanmugam, Tuan Z Tan, Sung W Shin, Frank Arfuso, Han M Shen, Henry Yang, Boon C Goh, Joo I Park, Louis Gaboury, Peter E Lobie, Gautam Sethi, Lina Hk Lim, Alan P Kumar
Metastatic breast cancer is still remain incurable so far, new specifically targeted and more effective therapies for triple negative breast cancer (TNBC) are required in the clinic. In this study, our clinical data has established that basal and claudin-low subtypes of breast cancer (TNBC types) express significantly higher levels of Annexin A1 (ANXA1) with poor survival outcomes. Using human cancer cell lines which model the TNBC subtype, we observed a strong positive correlation between expression of ANXA1 and Peroxisome Proliferator-Activated Receptor gamma (PPARγ)...
August 15, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28811153/the-design-of-target-specific-antibodies-scfv-by-applying-de-novo-workflow-case-study-on-bmr1-antigen-from-brugia-malayi
#11
Bee Yin Khor, Theam Soon Lim, Rahmah Noordin, Yee Siew Choong
De novo approach was applied to design single chain fragment variable (scFv) for BmR1, a recombinant antigen from Bm17DIII gene which is the primary antigen used for the detection of anti-BmR1 IgG4 antibodies in the diagnostic of lymphatic filariasis. Three epitopes of the BmR1 was previously predicted form an ab initio derived three-dimensional structure. A collection of energetically favourable conformations was generated via hot-spot-centric approach. This resulted in a set of three different scFv scaffolds used to compute the high shape complementary conformations via dock-and-design approach with the predicted epitopes of BmR1...
July 19, 2017: Journal of Molecular Graphics & Modelling
https://www.readbyqxmd.com/read/28811071/biological-evaluation-of-2-pyrazolinyl-1-carbothioamide-derivatives-against-hct116-human-colorectal-cancer-cell-lines-and-elucidation-on-qsar-and-molecular-binding-modes
#12
Beom Soo Kim, Soon Young Shin, Seunghyun Ahn, Dongsoo Koh, Young Han Lee, Yoongho Lim
In the search of compounds exhibiting anticancer activity, 37 derivatives of 2-pyrazolinyl-1-carbothioamide were designed and synthesized. Clonogenic cell survival assays were adapted to measure the cytotoxicities of the synthetic derivatives against HCT116 human colon cancer cell lines. Half-maximal cell growth inhibitory concentrations (GI50) ranged from 0.49 to 41.22µM. The compound with the lowest GI50 value, 3-(2-hydroxy-4,5-dimethoxyphenyl)-5-(naphthalen-1-yl)-N-(3,4,5-trimethoxyphenyl)-pyrazolinyl-1-carbothioamide, was subjected to further biological studies, including cell viability and apoptosis assays to examine levels of annexin-V in the outer plasma membrane layer and poly ADP-ribose polymerase cleavage...
August 4, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/28810721/de-novo-low-dose-sirolimus-versus-mycophenolate-mofetil-in-combination-with-extended-release-tacrolimus-in-kidney-transplant-recipients-a-multicentre-open-label-randomized-controlled-non-inferiority-trial
#13
Kyu Ha Huh, Jae Geun Lee, Jongwon Ha, Chang-Kwon Oh, Man Ki Ju, Chan-Duck Kim, Hong Rae Cho, Cheol Woong Jung, Beom Jin Lim, Yu Seun Kim
Background: Most of the previous studies reported that tacrolimus (TAC) with sirolimus (SRL) was associated with worse post-transplant outcomes in kidney transplantation, compared with TAC with mycophenolate mofetil (MMF). These might be attributable to high-dose SRL. However, outcomes using low-dose SRL with TAC for kidney transplantation are uncertain. The aim of this study was to assess the efficacy and safety of low-dose SRL with extended-release tacrolimus (ER-TAC) versus MMF with ER-TAC...
August 1, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28809910/enhanced-depth-of-field-of-an-integral-imaging-microscope-using-a-bifocal-holographic-optical-element-micro-lens-array
#14
Ki-Chul Kwon, Young-Tae Lim, Chang-Won Shin, Munkh-Uchral Erdenebat, Jae-Moon Hwang, Nam Kim
We propose and implement an integral imaging microscope with extended depth-of-field (DoF) using a bifocal holographic micro lens array (MLA). The properties of the two MLAs are switched via peristrophic multiplexing, where different properties of the MLA are recorded onto the single holographic optical element (HOE). The recorded MLA properties are perpendicular to each other: after the first mode is recorded, the HOE is rotated by 90° clockwise, and the second mode is recorded. The experimental results confirm that the DoF of the integral imaging microscopy system is extended successfully by using the bifocal MLA...
August 15, 2017: Optics Letters
https://www.readbyqxmd.com/read/28809771/efficacy-of-human-immunodeficiency-virus-sexually-transmitted-infection-trial-on-condom-use-among-heterosexual-men-patronizing-entertainment-establishments-who-engaged-in-casual-or-paid-sex-in-singapore
#15
Raymond Boon Tar Lim, Dede Kam Tyng Tham, Bee Choo Tai, P Ganesan Adaikan, Mee Lian Wong
BACKGROUND: We assessed the efficacy of a multi-component sexual health promotion program on condom use and human immunodeficiency virus (HIV)/sexually transmitted infection (STI) testing among heterosexual men (HSM) patronizing entertainment establishments who engaged in casual or paid sex in Singapore. METHODS: This was a quasi-experimental trial with a comparison group using cross-sectional surveys at baseline and 6 months postintervention. A locality patronized by local HSM was assigned the intervention, a comparable and distant area served as the comparison site...
September 2017: Sexually Transmitted Diseases
https://www.readbyqxmd.com/read/28809707/a-streaming-pca-vlsi-chip-for-neural-data-compression
#16
Tong Wu, Wenfeng Zhao, Hongsun Guo, Hubert H Lim, Zhi Yang
Neural recording system miniaturization and integration with low-power wireless technologies require compressing neural data before transmission. Feature extraction is a procedure to represent data in a low-dimensional space; its integration into a recording chip can be an efficient approach to compress neural data. In this paper, we propose a streaming principal component analysis algorithm and its microchip implementation to compress multichannel local field potential (LFP) and spike data. The circuits have been designed in a 65-nm CMOS technology and occupy a silicon area of 0...
August 14, 2017: IEEE Transactions on Biomedical Circuits and Systems
https://www.readbyqxmd.com/read/28809670/cardio-pulmonary-stethoscope-clinical-validation-with-heart-failure-and-hemodialysis-patients
#17
Magdy F Iskander, Todd B Seto, Ruthsenne Rg Perron, Eunjung Lim, Farhan Qazi
OBJECTIVE: The purpose of this study is to evaluate the accuracy of a noninvasive radiofrequency-based device, the Cardio-Pulmonary Stethoscope (CPS), to monitor heart and respiration rates and detect changes in lung water content in human experiments and clinical trials. METHODS: Three human populations (healthy subjects (n=4), heart failure (n=12) and hemodialysis (n=13) patients) were enrolled in this study. The study was conducted at the University of Hawaii and The Queen's Medical Center in Honolulu, HI...
August 14, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28809428/a-critical-role-of-catalyst-morphology-in-low-temperature-synthesis-of-carbon-nanotube-transition-metal-oxide-nanocomposite
#18
Xiaoyan Jin, Joohyun Lim, Yoonhoo Ha, Nam Hee Kwon, Hyeyoung Shin, In Young Kim, Nam-Suk Lee, Myung Hwa Kim, Hyungjun Kim, Seong-Ju Hwang
The effect of the catalyst morphology on the growth of carbon nanotubes (CNT) on nanostructured transition metal oxides was investigated to study a novel low-temperature synthetic route to functional CNT-transition metal oxide nanocomposites. Among several nanostructured manganese oxides with various morphologies and structures, only exfoliated 2D nanosheets of layered MnO2 acted as an effective catalyst for the chemical vapor deposition of CNT at low temperatures of 400-500 °C, which emphasizes the critical role of the catalyst morphology in CNT growth...
August 15, 2017: Nanoscale
https://www.readbyqxmd.com/read/28809109/characterization-of-rotational-stacking-layers-in-large-area-mose2-film-grown-by-molecular-beam-epitaxy-and-interaction-with-photon
#19
Yoon-Ho Choi, Dong-Hyeok Lim, Jae-Hun Jeong, Dambi Park, Kwang-Sik Jeong, Minju Kim, Aeran Song, Hee-Suk Chung, Kwun-Bum Chung, Yeonjin Yi, Mann-Ho Cho
Transition metal dichalcogenides (TMDCs) are promising next-generation materials for optoelectronic devices because, at sub-nanometer thicknesses, they have a transparency, flexibility, and band gap in the near-infrared to visible light range. In this study, we examined continuous, large-area MoSe2 film, grown by molecular beam epitaxy on an amorphous SiO2/Si substrate, which facilitated direct device fabrication without exfoliation. Spectroscopic measurements were implemented to verify the formation of a homogeneous MoSe2 film by performing mapping on the micrometer scale and measurements at multiple positions...
August 15, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28809097/piconewton-scale-analysis-of-ras-braf-signal-transduction-with-single-molecule-force-spectroscopy
#20
Chae-Seok Lim, Cheng Wen, Yanghui Sheng, Guangfu Wang, Zhuan Zhou, Shiqiang Wang, Huaye Zhang, Anpei Ye, J Julius Zhu
Intermolecular interactions dominate the behavior of signal transduction in various physiological and pathological cell processes, yet assessing these interactions remains a challenging task. Here, this study reports a single-molecule force spectroscopic method that enables functional delineation of two interaction sites (≈35 pN and ≈90 pN) between signaling effectors Ras and BRaf in the canonical mitogen-activated protein kinase (MAPK) pathway. This analysis reveals mutations on BRaf at Q257 and A246, two sites frequently linked to cardio-faciocutaneous syndrome, result in ≈10-30 pN alterations in RasBRaf intermolecular binding force...
August 15, 2017: Small
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