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https://www.readbyqxmd.com/read/28227927/a-feasibility-study-on-age-related-factors-of-wrist-pulse-using-principal-component-analysis
#1
Jang-Han Bae, Young Ju Jeon, Sanghun Lee, Jaeuk U Kim, Jang-Han Bae, Young Ju Jeon, Sanghun Lee, Jaeuk U Kim, Jang-Han Bae, Young Ju Jeon, Sanghun Lee, Jaeuk U Kim
Various analysis methods for examining wrist pulse characteristics are needed for accurate pulse diagnosis. In this feasibility study, principal component analysis (PCA) was performed to observe age-related factors of wrist pulse from various analysis parameters. Forty subjects in the age group of 20s and 40s were participated, and their wrist pulse signal and respiration signal were acquired with the pulse tonometric device. After pre-processing of the signals, twenty analysis parameters which have been regarded as values reflecting pulse characteristics were calculated and PCA was performed...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227712/a-preliminary-study-of-a-running-speed-based-heart-rate-prediction-during-an-incremental-treadmill-exercise
#2
Dae-Geun Jang, Byung-Hoon Ko, Sub Sunoo, Sang-Seok Nam, Hun-Young Park, Sang-Kon Bae, Dae-Geun Jang, Byung-Hoon Ko, Sub Sunoo, Sang-Seok Nam, Hun-Young Park, Sang-Kon Bae, Byung-Hoon Ko, Sang-Kon Bae, Sub Sunoo, Dae-Geun Jang, Hun-Young Park, Sang-Seok Nam
This preliminary study investigates feasibility of a running speed based heart rate (HR) prediction. It is basically motivated from the assumption that there is a significant relationship between HR and the running speed. In order to verify the assumption, HR and running speed data from 217 subjects of varying aerobic capabilities were simultaneously collected during an incremental treadmill exercise. A running speed was defined as a treadmill speed and its corresponding heart rate was calculated by averaging the last one minute HR values of each session...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226311/effects-of-root-extracts-of-eurycoma-longifolia-jack-on-corpus-cavernosum-of-rat
#3
Bae Huey Tee, See Ziau Hoe, Swee Hung Cheah, Sau Kuen Lam
OBJECTIVE: This study was conducted to investigate the mechanisms of action of Eurycoma longifolia in rat corpus cavernosum. MATERIALS AND METHODS: Tincture of the roots was concentrated to dryness by evaporating the ethanol in vacuo. This ethanolic extract was partitioned into five fractions sequentially with hexane, dichloromethane, ethyl acetate, butanol and water. The corpus cavernosum relaxant activity of each fraction was investigated. Dichloromethanic (DCM) fraction which showed the highest potency in relaxing phenylephrine-precontracted corpora cavernosa was purified by column chromatography...
February 22, 2017: Medical Principles and Practice: International Journal of the Kuwait University, Health Science Centre
https://www.readbyqxmd.com/read/28223454/dynamic-expansion-and-contraction-of-caga-copy-number-in-helicobacter-pylori-impact-development-of-gastric-disease
#4
Sungil Jang, Hanfu Su, Faith C Blum, Sarang Bae, Yun Hui Choi, Aeryun Kim, Youngmin A Hong, Jinmoon Kim, Ji-Hye Kim, Niluka Gunawardhana, Yeong-Eui Jeon, Yun-Jung Yoo, D Scott Merrell, Linhu Ge, Jeong-Heon Cha
Infection with Helicobacter pylori is a major risk factor for development of gastric disease, including gastric cancer. Patients infected with H. pylori strains that express CagA are at even greater risk of gastric carcinoma. Given the importance of CagA, this report describes a new molecular mechanism by which the cagA copy number dynamically expands and contracts in H. pylori Analysis of strain PMSS1 revealed a heterogeneous population in terms of numbers of cagA copies; strains carried from zero to four copies of cagA that were arranged as direct repeats within the chromosome...
February 21, 2017: MBio
https://www.readbyqxmd.com/read/28223219/trpm2-contributes-to-lpc-induced-intracellular-ca-2-influx-and-microglial-activation
#5
Heejin Jeong, Yong Ho Kim, Yunsin Lee, Sung Jun Jung, Seog Bae Oh
Microglia are the resident immune cells which become activated in some pathological conditions in central nervous system (CNS). Lysophosphatidylcholine (LPC), an endogenous inflammatory phospholipid, is implicated in immunomodulatory function of glial cells in the CNS. Although several studies uncovered that LPC induces intracellular Ca(2+) influx and morphologic change in microglia, there is still no direct evidence showing change of phosphorylation of mitogen-activated protein kinase (MAPK) p38 (p-p38), a widely used microglia activation marker, by LPC...
February 18, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28222553/dual-afferent-sensory-input-training-for-voluntary-movement-after-stroke-a-pilot-randomized-controlled-study
#6
Seahyun Bae, Kyung-Yoon Kim
BACKGROUND: Stimulation through afferent sensory input is necessary to improve voluntary functional movement in stroke patients. OBJECTIVES: Dual-afferent sensory input, which combines electromyography-triggered functional electric stimulation (ETFES) and action observation, was investigated to determine its effects on voluntary movements in stroke patients. METHODS: This study was conducted on 18 patients with left hemiplegia diagnosed between 6 and 24 months prior...
February 8, 2017: NeuroRehabilitation
https://www.readbyqxmd.com/read/28222114/social-networks-and-inference-about-unknown-events-a-case-of-the-match-between-google-s-alphago-and-sedol-lee
#7
Jonghoon Bae, Young-Jae Cha, Hyungsuk Lee, Boyun Lee, Sojung Baek, Semin Choi, Dayk Jang
This study examines whether the way that a person makes inferences about unknown events is associated with his or her social relations, more precisely, those characterized by ego network density that reflects the structure of a person's immediate social relation. From the analysis of individual predictions over the Go match between AlphaGo and Sedol Lee in March 2016 in Seoul, Korea, this study shows that the low-density group scored higher than the high-density group in the accuracy of the prediction over a future state of a social event, i...
2017: PloS One
https://www.readbyqxmd.com/read/28220771/expanding-the-genetic-code-of-mus-musculus
#8
Songmi Han, Aerin Yang, Soonjang Lee, Han-Woong Lee, Chan Bae Park, Hee-Sung Park
Here we report the expansion of the genetic code of Mus musculus with various unnatural amino acids including N(ɛ)-acetyl-lysine. Stable integration of transgenes encoding an engineered N(ɛ)-acetyl-lysyl-tRNA synthetase (AcKRS)/tRNA(Pyl) pair into the mouse genome enables site-specific incorporation of unnatural amino acids into a target protein in response to the amber codon. We demonstrate temporal and spatial control of protein acetylation in various organs of the transgenic mouse using a recombinant green fluorescent protein (GFPuv) as a model protein...
February 21, 2017: Nature Communications
https://www.readbyqxmd.com/read/28219240/ratiometric-imaging-of-tissue-by-two-photon-microscopy-observation-of-a-high-level-of-formaldehyde-around-mouse-intestinal-crypts
#9
Subhankar Singha, Yong Woong Jun, Juryang Bae, Kyo Han Ahn
Ratiometric imaging by two-photon microscopy can offer a viable tool for the relative quantification of biological analytes inside tissue with minimal influence from environmental factors that affect fluorescence signal. We demonstrate the ratiometric imaging of formaldehyde at the sub-organ level using a two-photon fluorescent probe, which involves pixel-to-pixel ratiometric data transformation. This study reveals for the first time a high level of formaldehyde around the crypts of mouse small intestine, implicating its possible protective role along with the released antimicrobials from the Paneth cells...
February 20, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28219002/molecular-testing-for-gastrointestinal-cancer
#10
Hye Seung Lee, Woo Ho Kim, Yoonjin Kwak, Jiwon Koh, Jeong Mo Bae, Kyoung-Mee Kim, Mee Soo Chang, Hye Seung Han, Joon Mee Kim, Hwal Woong Kim, Hee Kyung Chang, Young Hee Choi, Ji Y Park, Mi Jin Gu, Min Jin Lhee, Jung Yeon Kim, Hee Sung Kim, Mee-Yon Cho
With recent advances in molecular diagnostic methods and targeted cancer therapies, several molecular tests have been recommended for gastric cancer (GC) and colorectal cancer (CRC). Microsatellite instability analysis of gastrointestinal cancers is performed to screen for Lynch syndrome, predict favorable prognosis, and screen patients for immunotherapy. The epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor has been approved in metastatic CRCs with wild-type RAS (KRAS and NRAS exon 2-4). A BRAF mutation is required for predicting poor prognosis...
February 19, 2017: Journal of Pathology and Translational Medicine
https://www.readbyqxmd.com/read/28218837/rapid-and-efficient-genome-editing-in-staphylococcus-aureus-by-using-an-engineered-crispr-cas9-system
#11
Weizhong Chen, Yifei Zhang, Won-Sik Yeo, Taeok Bae, Quanjiang Ji
Staphylococcus aureus, a major human pathogen, has been the cause of serious infectious diseases with a high mortality rate. Although genetics is a key means to study S. aureus physiology, such as drug resistance and pathogenesis, genetic manipulation in S. aureus is always time consuming and labor intensive. Here, we report a CRISPR/Cas9 system (pCasSA) for rapid and efficient genome editing, including gene deletion, insertion and single-base substitution mutation in S. aureus. The designed pCasSA system is amenable to assembly of spacers and repair arms by Golden Gate assembly and Gibson assembly, respectively, enabling rapid construction of the plasmids for editing...
February 20, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28218721/bee-venom-phospholipase-a2-ameliorates-house-dust-mite-extract-induced-atopic-dermatitis-like-skin-lesions-in-mice
#12
Kyung-Hwa Jung, Hyunjung Baek, Manho Kang, Namsik Kim, Seung Young Lee, Hyunsu Bae
Atopic dermatitis (AD) is a biphasic inflammatory skin disease that is provoked by epidermal barrier defects, immune dysregulation, and increased skin infections. Previously, we have demonstrated that bvPLA2 evoked immune tolerance by inducing regulatory T cells (Treg), and thus alleviated Th2 dominant allergic asthma in mice. Here, we would like to determine whether treatment with bvPLA2 exacerbates the AD-like allergic inflammations induced by house dust mite extract (DFE) in a murine model. Epidermal thickness, immune cell infiltration, serum immunoglobulin, and cytokines were measured...
February 18, 2017: Toxins
https://www.readbyqxmd.com/read/28217684/extrauterine-epithelioid-trophoblastic-tumor-in-hysterectomized-woman
#13
Ji-Hye Kim, Sun Kyung Lee, Soo Hyun Hwang, Jung-Sun Kim, Gun Yoon, Yoo-Young Lee, Tae-Joong Kim, Chel Hun Choi, Byoung-Gie Kim, Duk-Soo Bae, Jeong-Won Lee
Epithelioid trophoblastic tumor (ETT) is a very rare variant of gestational trophoblastic disease (GTD) which arises in reproductive age women with prior gestational history. Although abnormal vaginal bleeding is the most common symptom of ETT, there are no reported pathognomonic symptoms of ETT because of its rarity. ETT is similar to placental site trophoblastic tumor in terms of its slow growing characteristic and microscopic findings. Therefore, it could be misdiagnosed as placental site trophoblastic tumor or other types of GTD...
January 2017: Obstetrics & Gynecology Science
https://www.readbyqxmd.com/read/28217681/laparoendoscopic-single-site-radical-hysterectomy-for-early-stage-cervical-cancer
#14
Ju Young Park, Yoo Min Kim, Yoo-Young Lee, Tae-Joong Kim, Jeong-Won Lee, Byoung-Gie Kim, Duk-Soo Bae, Chel Hun Choi
Technical developments have made laparoendoscopic single-site (LESS) surgery increasingly more feasible for treating gynecological conditions, including cancer. However, complex surgeries such as radical hysterectomy have rarely been performed with single-port access because of technical difficulties. The majority of the difficulties are due to the inefficient retraction of tissue during dissection. Here, we report a detailed description of LESS radical hysterectomy plus pelvic lymph node dissection that was successfully performed in two patients with stage IB1 cervical cancer...
January 2017: Obstetrics & Gynecology Science
https://www.readbyqxmd.com/read/28217674/uterine-fibroid-shrinkage-after-short-term-use-of-selective-progesterone-receptor-modulator-or-gonadotropin-releasing-hormone-agonist
#15
Min Jin Lee, Bo Seong Yun, Seok Ju Seong, Mi-La Kim, Yong Wook Jung, Mi Kyoung Kim, Hyo Sook Bae, Da Hee Kim, Ji Young Hwang
OBJECTIVE: The aim of this study was to evaluate the effect of short-term use of selective progesterone receptor modulator (SPRM) or gonadotropin-releasing hormone (GnRH) agonist on uterine fibroid shrinkage among Korean women. METHODS: This retrospective study involved 101 women with symptomatic uterine fibroids who received ulipristal acetate (SPRM, n=51) and leuprolide acetate (GnRH agonist, n=50) for 3 months between November 2013 and February 2015. The fibroid volume was measured both before and after treatment using ultrasonography, computed tomography, and magnetic resonance imaging...
January 2017: Obstetrics & Gynecology Science
https://www.readbyqxmd.com/read/28216605/an-overview-of-stress-induced-resveratrol-synthesis-in-grapes-perspectives-for-resveratrol-enriched-grape-products
#16
REVIEW
Mohidul Hasan, Hanhong Bae
Resveratrol is the most important stilbene phytoalexin synthesized naturally or induced in plants, as a part of their defense mechanism. Grapes and their derivative products, including juice and wine, are the most important natural sources of resveratrol, consisting of notably higher amounts than other natural sources like peanuts. Consumption of red wine with its presence of resveratrol explained the "French Paradox". Hence, the demand of resveratrol from grapes is increasing. Moreover, as a natural source of resveratrol, grapes became very important in the nutraceutical industry for their benefits to human health...
February 14, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28216577/qm-hifsa-aided-structure-determination-of-succinilenes-a-d-new-triene-polyols-from-a-marine-derived-streptomyces-sp
#17
Munhyung Bae, So Hyun Park, Yun Kwon, Sang Kook Lee, Jongheon Shin, Joo-Won Nam, Dong-Chan Oh
Based on profiles of secondary metabolites produced by marine bacteria obtained using LC/MS, succinilenes A-D (1-4), new triene polyols, were discovered from a culture of a Streptomyces strain SAK1, which was collected in the southern area of Jeju Island, Republic of Korea. The gross structures of 1-4 were primarily determined through analysis of NMR spectra. The double bond geometries of the succinilenes, which could not be established from conventional ¹H NMR spectra because of the highly overlapped olefinic signals, were successfully deciphered using the recently developed quantum-mechanics-driven ¹H iterative full spin analysis (QM-HiFSA)...
February 14, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28216194/safety-of-resuming-biologic-dmards-in-patients-who-develop-tuberculosis-after-anti-tnf-treatment
#18
Soo-Kyung Cho, Dam Kim, Soyoung Won, Minkyung Han, Jiyoung Lee, Eun Jin Jang, Tae-Hyung Kim, Sang-Cheol Bae, Yoon-Kyoung Sung
OBJECTIVES: To estimate the incidence of tuberculosis (TB) in rheumatoid arthritis (RA) patients treated with tumor necrotizing factor inhibitor (TNFI) and evaluate the safety of resuming biologic disease-modifying anti-rheumatic drugs (DMARDs) in patients who developed TB after anti-TNF treatment. METHODS: We conducted an inception cohort study of RA patients in the Korean Healthcare Claims Database who started TNFI as the first biologic DMARD between January 2009 and December 2013...
January 18, 2017: Seminars in Arthritis and Rheumatism
https://www.readbyqxmd.com/read/28215076/polymer-stabilization-of-liquid-crystal-blue-phase-ii-toward-photonic-crystals
#19
Seong-Yong Jo, Sung-Wook Jeon, Byeong-Cheon Kim, Jae-Hyun Bae, Fumito Araoka, Suk-Won Choi
The temperature ranges where a pure simple-cubic blue phase (BPII) emerges are quite narrow compared to the body-centered-cubic BP (BPI) such that the polymer stabilization of BPII is much more difficult. Hence, a polymer-stabilized BPII possessing a wide temperature range has been scarcely reported. Here, we fabricate a polymer-stabilized BPII over a temperature range of 50 °C including room temperature. The fabricated polymer-stabilized BPII is confirmed via polarized optical microscopy, Bragg reflection, and Kossel diagram observations...
February 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28214924/characteristics-and-outcomes-of-rheumatoid-arthritis-patients-who-started-biosimilar-infliximab
#20
Yoon-Kyoung Sung, Soo-Kyung Cho, Dam Kim, Soyoung Won, Chan-Bum Choi, So-Young Bang, Seung-Jae Hong, Hyoun Ah Kim, Eun-Mi Koh, Hye-Soon Lee, Chang-Hee Suh, Dae-Hyun Yoo, Sang-Cheol Bae
To compare the characteristics of rheumatoid arthritis (RA) patients receiving either biosimilar or originator infliximab and to identify the effectiveness and safety of biosimilar infliximab in RA patients in real-world practice. RA patients who started either biosimilar or originator infliximab were selected using the prospective biologic disease-modifying anti-rheumatic drugs (DMARDs) registry: BIOlogics Pharmacoepidemiologic StudY (BIOPSY). Baseline characteristics of the two groups were compared, and short-term treatment outcomes, including DAS28-ESR and HAQ-DI scores, were compared after initiation of biosimilar or originator infliximab...
February 18, 2017: Rheumatology International
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