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https://www.readbyqxmd.com/read/28424602/assessing-the-driver-s-current-level-of-working-memory-load-with-high-density-functional-near-infrared-spectroscopy-a-realistic-driving-simulator-study
#1
Anirudh Unni, Klas Ihme, Meike Jipp, Jochem W Rieger
Cognitive overload or underload results in a decrease in human performance which may result in fatal incidents while driving. We envision that driver assistive systems which adapt their functionality to the driver's cognitive state could be a promising approach to reduce road accidents due to human errors. This research attempts to predict variations of cognitive working memory load levels in a natural driving scenario with multiple parallel tasks and to reveal predictive brain areas. We used a modified version of the n-back task to induce five different working memory load levels (from 0-back up to 4-back) forcing the participants to continuously update, memorize, and recall the previous 'n' speed sequences and adjust their speed accordingly while they drove for approximately 60 min on a highway with concurrent traffic in a virtual reality driving simulator...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28402876/mechanistic-models-fit-to-variable-temperature-calorimetric-data-provide-insights-into-cooperativity
#2
Elihu C Ihms, Ian R Kleckner, Paul Gollnick, Mark P Foster
Allostery pervades macromolecular function and drives cooperative binding of ligands to macromolecules. To decipher the mechanisms of cooperative ligand binding it is necessary to define at a microscopic level the structural and thermodynamic consequences of binding of each ligand to its allosterically coupled site(s). However, dynamic sampling of alternative conformations (microstates) in allosteric molecules complicates interpretation of both structural and thermodynamic data. Isothermal titration calorimetry has the potential to directly quantify the thermodynamics of allosteric interactions, but usually falls short of enabling mechanistic insight...
April 11, 2017: Biophysical Journal
https://www.readbyqxmd.com/read/28396158/variability-in-glycated-albumin-levels-predicts-the-progression-of-diabetic-nephropathy
#3
Su Bin Park, Sang Soo Kim, In Joo Kim, Yoon Jeong Nam, Kang Hee Ahn, Jong Ho Kim, Yun Kyung Jeon, Bo Hyun Kim, Sang Heon Song, Ihm Soo Kwak, Eun Kyung Lee, Yong Ki Kim
AIM: The present study was performed to assess variability in glycated albumin (GA) using a coefficient of variation (CV) to predict the progression of diabetic nephropathy in type 2 diabetic patients, independently of HbA1c and other conventional risk factors. METHODS: The present study consecutively enrolled 369 patients with type 2 diabetes mellitus from outpatient clinic. During the follow-up period, GA and HbA1c levels were measured repeatedly (≥5 times), and the CV of GA (GA-CV) was calculated for each patient...
February 3, 2017: Journal of Diabetes and its Complications
https://www.readbyqxmd.com/read/28393003/syndrome-of-inappropriate-antidiuretic-hormone-secretion-associated-with-seronegative-neuromyelitis-optica-spectrum-disorder
#4
Shin Ju Oh, Chun Gyoo Ihm, Tae Won Lee, Jin Sug Kim, Da Rae Kim, Eun Ji Park, Su Woong Jung, Ji-Hoon Lee, Sung Hyuk Heo, Kyung Hwan Jeong
The syndrome of inappropriate antidiuretic hormone secretion (SIADH) is a potential cause of hyponatremia of the central nervous system (CNS). Although SIADH has been reported to be associated with many other central nervous disorders, its association with neuromyelitis optica (NMO) or NMO spectrum disorders are rare. NMO is a demyelinating disorder characterized by optic neuritis and transverse myelitis. Aquaporin-4 (AQP4), which is the target antigen for a NMO autoantibody, is the predominant CNS water channel...
March 2017: Kidney Research and Clinical Practice
https://www.readbyqxmd.com/read/28389813/plasma-neutrophil-gelatinase-associated-lipocalin-is-associated-with-iron-status-in-anemic-patients-with-pre-dialysis-chronic-kidney-disease
#5
Il Young Kim, Joo Hui Kim, Dong Won Lee, Soo Bong Lee, Harin Rhee, Sang Heon Song, Eun Young Seong, Ihm Soo Kwak
BACKGROUND: Iron deficiency anemia is common in patients with chronic kidney disease (CKD). Neutrophil gelatinase-associated lipocalin (NGAL), a biomarker of acute kidney injury, is known to be associated with iron metabolism. We investigated whether plasma NGAL level is associated with iron status in pre-dialysis CKD patients with anemia. METHODS: This study included 419 patients who had anemia. The subjects were into categorized into a pre-dialysis group (estimated glomerular filtration rate [eGFR] <60 ml/min/1...
April 7, 2017: Clinical and Experimental Nephrology
https://www.readbyqxmd.com/read/28372347/metaplastic-carcinoma-with-chondroid-differentiation-arising-in-microglandular-adenosis
#6
Ga-Eon Kim, Nah Ihm Kim, Ji Shin Lee, Min Ho Park
Microglandular adenosis (MGA) of the breast is a rare, benign proliferative lesion but with a significant rate of associated carcinoma. Herein, we report an unusual case of metaplastic carcinoma with chondroid differentiation associated with typical MGA. Histologically, MGA showed a direct transition to metaplastic carcinoma without an intervening atypical MGA or DCIS component. The immunohistochemical profile of the metaplastic carcinoma was mostly similar to that of MGA. In both areas, all the epithelial cells were positive for S-100 protein, but negative for estrogen receptor, progesterone receptor, HER2⁄neu, and epidermal growth factor receptor...
April 4, 2017: Journal of Pathology and Translational Medicine
https://www.readbyqxmd.com/read/28346848/cardiovascular-protective-effects-and-clinical-applications-of-resveratrol
#7
Sanghyun Cho, Kyung Namkoong, Minji Shin, Jueun Park, Eunyeong Yang, Jinsoo Ihm, Vu Thi Thu, Hyoung Kyu Kim, Jin Han
Resveratrol is a naturally occurring phenol that is generated by plant species following injury or attack by bacterial and fungal pathogens. This compound was first described as the French Paradox in 1992. Later in 2003, resveratrol was reported to activate sirtuins in yeast cells. Recent experimental studies have found that resveratrol offers a variety of benefits that include both anticarcinogenic and anti-inflammatory effects in addition to the ability to reverse obesity, attenuate hyperglycemia and hyperinsulinemia, protect heart and endothelial function, and increase the life span...
April 2017: Journal of Medicinal Food
https://www.readbyqxmd.com/read/28342632/the-pharmacodynamics-of-low-and-standard-doses-of-ticagrelor-in-patients-with-end-stage-renal-disease-on-hemodialysis
#8
Jin Sug Kim, Jong Shin Woo, Jin Bae Kim, Woo-Shik Kim, Tae Won Lee, Kwon Sam Kim, Chun Gyoo Ihm, Weon Kim, Kyung Hwan Jeong
BACKGROUND: Patients with end-stage renal disease (ESRD) on maintenance hemodialysis (HD) respond poorly to clopidogrel. We assessed the utility of low-dose ticagrelor in ESRD patients on maintenance HD. METHODS: In this single-center, prospective, randomized pharmacodynamic study, 52 ESRD patients on HD were prescribed clopidogrel (300mg loading dose [LD], then 75mg daily), standard-dose ticagrelor (180mg LD, then 90mg twice daily), or low-dose ticagrelor (90mg LD, then 90mg daily) for 14days...
March 9, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28326327/ameliorating-effect-of-gemigliptin-on-renal-injury-in-murine-adriamycin-induced-nephropathy
#9
Da Rae Kim, Shin Yeong Lee, Jin Sug Kim, Yang Gyun Kim, Ju-Young Moon, Sang Ho Lee, Tae Won Lee, Chun Gyoo Ihm, Kyung Hwan Jeong
Background. Previous studies have shown the antiapoptotic and anti-inflammatory potential of DPP-IV inhibitor in experimental models of renal injury. We tested whether DPP-IV inhibitor (gemigliptin) ameliorates renal injury by suppressing apoptosis, inflammation, and oxidative stress in mice with adriamycin nephropathy. Methods. Mice were treated with normal saline (control), gemigliptin (GM), adriamycin (ADR), or adriamycin combined with gemigliptin (ADR+GM). Apoptosis, inflammation, and oxidative stress were analyzed via western blotting, real-time PCR, light microscopy, and immunofluorescence...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28306496/use-of-magnetic-resonance-imaging-guided-biopsy-of-a-vertebral-body-mass-to-diagnose-osteosarcoma-in-a-rottweiler
#10
Rebecca A Krimins, Jan Fritz, Larry A Gainsburg, Patrick R Gavin, Elizabeth A Ihms, David L Huso, Dara L Kraitchman
CASE DESCRIPTION A 9-year-old spayed female Rottweiler with hind limb ataxia was examined because of anorexia and an acute onset of hind limb paresis. CLINICAL FINDINGS Neurologic evaluation revealed hind limb ataxia and symmetric paraparesis with bilaterally abnormal hind limb postural reactions including hopping, hemiwalking, hemistanding, and delayed proprioception, which were suggestive of a lesion somewhere in the T3-L3 segment of the spinal cord. Thoracolumbar radiography revealed an abnormal radiopacity suggestive of a mass at T11...
April 1, 2017: Journal of the American Veterinary Medical Association
https://www.readbyqxmd.com/read/28299456/interlocking-horizontal-mattress-suture-versus-kakiuchi-technique-in-repair-of-achilles-tendon-rupture-a-biomechanical-study
#11
Matteo Guzzini, Riccardo Maria Lanzetti, Lorenzo Proietti, Daniele Mazza, Mattia Fabbri, Edoardo Monaco, Germano Ferri, Andrea Ferretti
BACKGROUND: In recent years, the type of surgical treatment for Achilles tendon rupture has been the subject of controversial debate. This biomechanical study evaluates for the first time in literature the ultimate failure load (UFL) of interlocking horizontal mattress (IHM) suture as compared with Kakiuchi suture in Achilles tendon rupture. The hypothesis is that IHM suture can be performed also for Achilles tendon rupture and ensures higher resistance compared with the traditional Kakiuchi suture...
March 15, 2017: Journal of Orthopaedics and Traumatology: Official Journal of the Italian Society of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/28292620/in%C3%A2-vitro-effects-of-phthalate-esters-in-human-myometrial-and-leiomyoma-cells-and-increased-urinary-level-of-phthalate-metabolite-in-women-with-uterine-leiomyoma
#12
Jin Hee Kim, Sung Hoon Kim, Young Sang Oh, Hyo Jin Ihm, Hee Dong Chae, Chung-Hoon Kim, Byung Moon Kang
OBJECTIVE: To investigate the possible role of phthalate, a ubiquitous chemical used in consumer products, in the pathogenesis of uterine leiomyoma. DESIGN: Experimental and prospective case-control study using human samples. SETTING: University hospital. PATIENT(S): Fifty-three women with histologic evidence of uterine leiomyoma and 33 surgical controls without leiomyoma. INTERVENTION(S): Human myometrial and leiomyoma cells were treated with di-(2-thylhexyl)-phthalate (DEHP)...
April 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28275385/severe-hypernatremia-caused-by-acute-exogenous-salt-intake-combined-with-primary-hypothyroidism
#13
Woo Jin Jung, Su Min Park, Jong Man Park, Harin Rhee, Il Young Kim, Dong Won Lee, Soo Bong Lee, Eun Young Seong, Ihm Soo Kwak, Sang Heon Song
This report describes a case of severe hypernatremia with a serum sodium concentration of 188.1mmol/L caused by exogenous salt intake. A 26-year-old man diagnosed with Crohn's disease 5 years previously visited our clinic due to generalized edema and personality changes, with aggressive behavior. He had compulsively consumed salts, ingesting approximately 154 g of salt over the last 4 days. Despite careful fluid management that included not only hypotonic fluid therapy for 8 hours but also hypertonic saline administration, his serum sodium level decreased sharply at 40...
December 2016: Electrolyte & Blood Pressure: E & BP
https://www.readbyqxmd.com/read/28275384/genetic-variations-of-tyrosine-hydroxylase-in-the-pathogenesis-of-hypertension
#14
REVIEW
Yu Ho Lee, Yang Gyun Kim, Ju-Young Moon, Jin Sug Kim, Kyung-Hwan Jeong, Tae Won Lee, Chun-Gyoo Ihm, Sang Ho Lee
One of the major pathophysiological features of primary hypertension is an inappropriate activation of the sympathetic nervous system, which is mediated by excessive synthesis and secretion of catecholamine into the blood. Tyrosine hydroxylase (TH), a rate-limiting enzyme in the synthesis of catecholamine, has been highlighted because genetic variations of TH could alter the activity of the sympathetic nervous system activity and subsequently contribute to the pathogenesis of hypertension. Here, we discuss the role of TH as a regulator of sympathetic activity and review several studies that investigated the relationship between genetic variations of TH and hypertension...
December 2016: Electrolyte & Blood Pressure: E & BP
https://www.readbyqxmd.com/read/28252036/universality-of-periodicity-as-revealed-from-interlayer-mediated-cracks
#15
Myung Rae Cho, Jong Hyun Jung, Min Key Seo, Sung Un Cho, Young Duck Kim, Jae Hyun Lee, Yong Seung Kim, Pilkwang Kim, James Hone, Jisoon Ihm, Yun Daniel Park
A crack and its propagation is a challenging multiscale materials phenomenon of broad interest, from nanoscience to exogeology. Particularly in fracture mechanics, periodicities are of high scientific interest. However, a full understanding of this phenomenon across various physical scales is lacking. Here, we demonstrate periodic interlayer-mediated thin film crack propagation and discuss the governing conditions resulting in their periodicity as being universal. We show strong confinement of thin film cracks and arbitrary steering of their propagation by inserting a predefined thin interlayer, composed of either a polymer, metal, or even atomically thin graphene, between the substrate and the brittle thin film...
March 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28218042/doxorubicin-has-a-synergistic-cytotoxicity-with-cucurbitacin-b-in-anaplastic-thyroid-carcinoma-cells
#16
Si Hyoung Kim, Jun Goo Kang, Chul Sik Kim, Sung-Hee Ihm, Moon Gi Choi, Hyung Joon Yoo, Seong Jin Lee
In this study, the combined effect of doxorubicin with cucurbitacin B on survival of anaplastic thyroid carcinoma cells was evaluated. For experiments, 8505C and CAL62 human anaplastic thyroid carcinoma cells were used. Cell viability, the percentage of viable cells, and cytotoxic activity were measured using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay, multiplexed cytotoxicity assay, and cytotoxicity assay, respectively. Reactive oxygen species production was measured. In experiments, doxorubicin and cucurbitacin B reduced cell viability in a dose- and time-dependent manner...
February 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28206762/influence-of-lafeo3-surface-termination-on-water-reactivity
#17
Kelsey A Stoerzinger, Ryan Comes, Steven R Spurgeon, Suntharampillai Thevuthasan, Kyuwook Ihm, Ethan J Crumlin, Scott A Chambers
The polarity of oxide surfaces can dramatically impact their surface reactivity, in particular, with polar molecules such as water. The surface species that result from this interaction change the oxide electronic structure and chemical reactivity in applications such as photoelectrochemistry but are challenging to probe experimentally. Here, we report a detailed study of the surface chemistry and electronic structure of the perovskite LaFeO3 in humid conditions using ambient-pressure X-ray photoelectron spectroscopy...
February 17, 2017: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/28196107/fluid-overload-and-survival-in-critically-ill-patients-with-acute-kidney-injury-receiving-continuous-renal-replacement-therapy
#18
Il Young Kim, Joo Hui Kim, Dong Won Lee, Soo Bong Lee, Harin Rhee, Eun Young Seong, Ihm Soo Kwak, Sang Heon Song
BACKGROUND: Fluid overload is known to be associated with increased mortality in patients with acute kidney injury (AKI) who are critically ill. In this study, we intended to uncover whether the adverse effect of fluid overload on survival could be applied to all of the patients with AKI who received continuous renal replacement therapy (CRRT). METHODS: We analyzed 341 patients with AKI who received CRRT in our intensive care units. The presence of fluid overload was defined as a minimum 10% increase in body weight from the baseline...
2017: PloS One
https://www.readbyqxmd.com/read/28193850/retrospective-observational-study-of-trends-in-hospital-admissions-for-idiopathic-pulmonary-fibrosis-in-spain-2004-2013-using-administrative-data
#19
Fernando Pedraza-Serrano, Ana López de Andrés, Rodrigo Jiménez-García, Isabel Jiménez-Trujillo, Valentín Hernández-Barrera, Gema Sánchez-Muñoz, Luis Puente-Maestu, Javier de Miguel-Díez
OBJECTIVE: To assess changes in incidence, diagnostic procedures, comorbidity profiles, length of hospital stay (LOHS), economic costs and in-hospital mortality (IHM) associated with idiopathic pulmonary fibrosis (IPF). METHODS: We identified patients hospitalised with IPF in Spain from 2004 to 2013. Data were collected from the National Hospital Discharge Database. RESULTS: The study population comprised 22 214 patients. Overall crude incidence increased from 3...
February 13, 2017: BMJ Open
https://www.readbyqxmd.com/read/28190617/chronic-obstructive-pulmonary-disease-predicts-higher-incidence-and-in-hospital-mortality-for-atrial-fibrillation-an-observational-study-using-hospital-discharge-data-in-spain-2004-2013
#20
Manuel Méndez-Bailón, Ana Lopez-de-Andrés, Javier de Miguel-Diez, José Mª de Miguel-Yanes, Valentín Hernández-Barrera, Nuria Muñoz-Rivas, Noel Lorenzo-Villalba, Rodrigo Jiménez-García
BACKGROUND: Our objectives were to describe and compare trends in the incidence of hospitalization for atrial fibrillation (AF) in patients with and without chronic obstructive pulmonary disease (COPD) in Spain during 2004-2013 and to assess the effect of COPD on the in-hospital mortality (IHM) of patients with AF. METHODS: We performed a retrospective study using the Spanish National Hospital Discharge Database. The study population comprised patients≥40years with a primary diagnosis of AF...
February 7, 2017: International Journal of Cardiology
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