Keming Dong, Hyoung Joong Kim, Yong Soo Choi, Sang Hyun Joo, Byung Ho Chung,
... krSearch for more papers by this authorYong Soo Choi, Yong Soo Choi ciechoi@sungkyul.ac.kr Search for more ... krSearch for more papers by this authorYong Soo Choi, Yong Soo Choi ciechoi@sungkyul.ac.kr Search for more papers ... and Security, Korea University, Seoul, Rep. of Korea. Yong Soo Choi (ciechoi@sungkyul.ac.kr) is with the Division ...
Tópico(s): Digital Media Forensic Detection
2015 - Electronics and Telecommunications Research Institute | ETRI Journal
Jung Wook Hwang, Min Ji Lee, Tae Nyoung Chung, Han A. Reum Lee, Jung Ho Lee, Seo Yoon Choi, Ye Jin Park, Chul‐Hee Kim, Isom Jin, Seong Hoon Kim, Hyo-Bum Kwak, Jun‐Won Heo, Kwangmin Na, Sangchun Choi, Yong‐Soo Choi, Kyuseok Kim,
Abstract Background Sepsis has a high mortality rate, but no specific drug has been proven effective, prompting the development of new drugs. Immunologically, sepsis can involve hyperinflammation, immune paralysis, or both, which might pose challenges during drug development. Recently, mitochondrial transplantation has emerged as a treatment modality for various diseases involving mitochondrial dysfunction, but it has never been tested for sepsis. Methods We isolated mitochondria from L6 muscle ...
Tópico(s): Intensive Care Unit Cognitive Disorders
2021 - BioMed Central | Critical Care
Jin Ju Lee, Jong‐Yoon Ha, Won-Kook Choi, Yong Soo Cho, Ji‐Won Choi,
Mn-doped SnO₂ thin films were fabricated by a continuous composition spread (CCS) method on a glass substrate at room temperature to find optimized compositions. The fabricated materials were found to have a lower resistivity than pure SnO₂ thin films because of oxygen vacancies generated by Mn doping. As Mn content was increased, resistivity was found to decrease for limited doping concentrations. The minimum thin film resistivity was 0.29 Ω-cm for a composition of 2.59 wt % Mn-doped SnO₂. The Sn- ...
Tópico(s): Acoustic Wave Resonator Technologies
2015 - American Chemical Society | ACS Combinatorial Science
Jae‐Woo Choi, Yong‐Soo Choi, Seok Won Hong, Dong‐Ju Kim, Sang‐Hyup Lee,
This study investigated the effect of pH and the presence of coexisting (competitive) anions on the removal of phosphate by titanium mesostructures synthesized using do‐ or hexadecyltrimethylammonium bromide. To address these research objectives, experiments were conducted (1) under controlled initial pH values (2 to10); and (2) through injection of nitrate, fluoride, chloride, or sulfate anions into a phosphate solution. Based on the experimental results, an initial of pH of 2 was found to be optimal ...
Tópico(s): Adsorption and biosorption for pollutant removal
2012 - Wiley | Water Environment Research
Min Suk Choi, Joon Suk Park, Hong Kwan Kim, Yong Soo Choi, Young Tae Kim, Young Mog Shim, Kwhanmien Kim,
... Park, M.D., Hong Kwan Kim, M.D., Yong Soo Choi, M.D., Jhingook Kim, M.D., Young Mog Shim, M.D., Kwhanmien Kim, M.D.. Korean J ...
Tópico(s): Pleural and Pulmonary Diseases
2011 - Korean Society for Thoracic and Cardiovascular Surgery | The Korean Journal of Thoracic and Cardiovascular Surgery
Tae-Seon Woo, Seo-Young Yoon, Ike Campomayor dela Peña, Ji-Young Choi, Hye-Lim Lee, Yoon‐Jung Choi, Yong Soo Lee, Jong-Hoon Ryu, Jae-Sue Choi, Jae-Hoon Cheong,
In the present study, the anticonvulsant effects of Artemisia capillaris Herba (AC) and its major constituent, esculetin (ECT), were tested and the mechanism studied. Locomotion, Myorelaxation, motor coordination and electroshock seizure experiment were conducted in mice. To identify the anticonvulsant mechanism effect of this drug, chemical-induced seizure in mice and the ionic movement in neuroblastoma cells were also observed. The ethanol extract of AC was orally administered to mice 30 min. prior ...
Tópico(s): Biological and pharmacological studies of plants
2011 - Korean Society of Applied Pharmacology | Biomolecules & Therapeutics
Yaeni Kim, Ji Hee Lim, Eun Nim Kim, Yu Ah Hong, Hun‐Jun Park, Sungjin Chung, Bum Soon Choi, Yong‐Soo Kim, Ji Yong Park, Hye Won Kim, Cheol Whee Park,
Accumulation of lipids and their metabolites induces lipotoxicity in diabetic cardiomyopathy. Lowering ceramide concentration could reduce the impact of metabolic damage to target organs. Adiponectin improves lipotoxicity through its receptors (AdiopRs), which have sequence homology with ceramidase enzymes. Therefore, cardioprotective role of AdipoR agonism by AdipoRon was investigated. Sixteen-week-old male db/m and db/db mice were fed a diet containing AdipoRon for four weeks. Phenotypic and metabolic ...
Tópico(s): Cardiovascular Function and Risk Factors
2022 - Springer Nature | Cell Death and Disease
Soohaeng Cho, Suk-Cheol Kwon, Dae Young Kim, Woo-Seok Choi, Yong-Soo Kim, Jong‐Hyeon Lee,
In this study, hot corrosion behaviours of Haynes 282 (H282), Nimonic 90 (N90), and Haynes HR160 (HR160) in LiCl-Li2O molten salt were investigated at 650 °C under argon atmosphere. The corrosion rate was in the order of H282 < N90 < HR160, depending on the morphology and structure of the scale. H282 showed a localised corrosion behaviour, while N90 showed a uniform corrosion behaviour. For HR-160, intergranular corrosion was observed. The high Cr content caused intergranular corrosion in the corrosion ...
Tópico(s): Aluminum Alloy Microstructure Properties
2019 - Elsevier BV | Corrosion Science
Seun Deuk Hwang, Joon Ho Song, Yaeni Kim, Ji Hee Lim, Min Young Kim, Eun Nim Kim, Yu Ah Hong, Sungjin Chung, Bum Soon Choi, Yong‐Soo Kim, Cheol Whee Park,
Recent studies have demonstrated that chronic inflammation-induced lymphangiogenesis plays a crucial role in the progression of various renal diseases, including diabetic nephropathy. SAR131675 is a selective vascular endothelial cell growth factor receptor-3 (VEGFR-3)-tyrosine kinase inhibitor that acts as a ligand for VEGF-C and VEGF-D to inhibit lymphangiogenesis. In this study, we evaluated the effect of SAR131675 on renal lymphangiogenesis in a mouse model of type 2 diabetes. Male C57BLKS/J ...
Tópico(s): Systemic Sclerosis and Related Diseases
2019 - Springer Nature | Cell Death and Disease
Yaeni Kim, Seun Deuk Hwang, Ji Hee Lim, Min Young Kim, Eun Nim Kim, Bum Soon Choi, Yong‐Soo Kim, Hye Won Kim, Cheol Whee Park,
Abstract Lymphangiogenesis occurs in response to renal injury and is correlated with interstitial fibrosis. Diabetes- and high-fat diet (HFD)-induced intrarenal lipotoxicity and their relationships with lymphangiogenesis are not established. We used PPARα agonist, fenofibrate, to unravel the linkage between lipotoxicity and lymphangiogenesis. Eight-week-old male C57BLKS/J db/db mice and HFD Spontaneously hypertensive rats (SHRs) were fed fenofibrate for 12 weeks. HK-2 and RAW264.7 cells were used ...
Tópico(s): Kruppel-like factors research
2019 - Nature Portfolio | Scientific Reports
Yaeni Kim, Ji Hee Lim, Min Young Kim, Eun Nim Kim, Hye Eun Yoon, Seok Joon Shin, Bum Soon Choi, Yong‐Soo Kim, Yoon Sik Chang, Cheol Whee Park,
Adiponectin exerts renoprotective effects against diabetic nephropathy (DN) by activating the AMP-activated protein kinase (AMPK)/peroxisome proliferative-activated receptor– α (PPAR α ) pathway through adiponectin receptors (AdipoRs). AdipoRon is an orally active synthetic adiponectin receptor agonist. We investigated the expression of AdipoRs and the associated intracellular pathways in 27 patients with type 2 diabetes and examined the effects of AdipoRon on DN development in male C57BLKS/J db/db mice, ...
Tópico(s): Metabolism, Diabetes, and Cancer
2018 - American Society of Nephrology | Journal of the American Society of Nephrology
Sun Ryoung Choi, Ji Hee Lim, Min Young Kim, Eun Nim Kim, Yaeni Kim, Bum Soon Choi, Yong-soo Kim, Hye Won Kim, Kyung‐Min Lim, Min Jeong Kim, Cheol Whee Park,
Abstract Background Adiponectin is known to take part in the regulation of energy metabolism. AdipoRon, an orally-active synthetic adiponectin agonist, binds to both adiponectin receptors (AdipoR)1/R2 and ameliorates diabetic complications. Among the lipid metabolites, the ceramide subspecies of sphingolipids have been linked to features of lipotoxicity, including inflammation, cell death, and insulin resistance. We investigated the role of AdipoRon in the prevention and development of type 2 diabetic nephropathy. ...
Tópico(s): Lipid metabolism and disorders
2018 - Elsevier BV | Metabolism
Ji Hee Lim, Hyung Wook Kim, Min Young Kim, Tae Woo Kim, Eun Nim Kim, Yaeni Kim, Sungjin Chung, Young Soo Kim, Bum Soon Choi, Yong‐Soo Kim, Yoon Sik Chang, Hye Won Kim, Cheol Whee Park,
Abstract Apoptosis and autophagy are harmoniously regulated biological processes for maintaining tissue homeostasis. AMP-activated protein kinase (AMPK) functions as a metabolic sensor to coordinate cellular survival and function in various organs, including the kidney. We investigated the renoprotective effects of cinacalcet in high-glucose treated human glomerular endothelial cells (HGECs), murine podocytes and C57BLKS/J- db/db mice. In cultured HGECs and podocytes, cinacalcet decreased oxidative ...
Tópico(s): Parathyroid Disorders and Treatments
2018 - Springer Nature | Cell Death and Disease
Chan Su Han, Hong Rak Choi, Hong Je Choi, Yong Soo Cho,
High dielectric constant thin films processable at nearly room temperature have been demanded for various flexible electronic devices. Here, we explore the origin of abnormal dielectric behavior of amorphous CaCu3Ti4O12 (CCTO) thin films having an exceptionally high dielectric constant, in conjunction with chemical states and unusual ferroelectricity in the amorphous state. As an optimal example, the amorphous CCTO film sputtered at room temperature under an oxygen partial pressure of 3.6 mTorr exhibits ...
Tópico(s): Dielectric materials and actuators
2017 - American Chemical Society | Chemistry of Materials
Chan Su Han, Kyu Sik Park, Hong Je Choi, Yong Soo Cho,
High-quality piezoelectric thin films have recently been in demand for mobile sensor applications. An investigation was conducted to understand the improvements in the piezoelectric and imprint characteristics of heavily Nb-doped lead zirconate titanate thin films with an extensive range of Nb content (up to 14 mol %) beyond the typical solid solubility limit of Nb. The positive effects produced by the unusual doping of Nb were realized by utilizing an in situ sputtering process that did not require ...
Tópico(s): Acoustic Wave Resonator Technologies
2017 - American Chemical Society | ACS Applied Materials & Interfaces
Hoon Suk Park, Ji Hee Lim, Min Young Kim, Yaeni Kim, You Ah Hong, Sun Ryoung Choi, Sungjin Chung, Hyung Wook Kim, Bum Soon Choi, Yong‐Soo Kim, Yoon Sik Chang, Cheol Whee Park,
Adiponectin has multiple functions including insulin sensitization, anti-inflammation and antiatherogenesis in various organs. Adiponectin activates 5'-adenosine monophosphate-activated protein kinase (AMPK) and peroxisome proliferator-activated receptor (PPAR)α via the adiponectin receptor (AdipoR) 1 and 2, which are critical for regulating lipids and glucose homeostasis and for controlling oxidative stress. We investigated whether resveratrol can inhibit renal damage in type 2 diabetic db/db mice ...
Tópico(s): Adipose Tissue and Metabolism
2016 - BioMed Central | Journal of Translational Medicine
Bien Cuong Tran Khac, Ki‐Joon Jeon, Seung Tae Choi, Yong Soo Kim, Frank W. DelRio, Koo–Hyun Chung,
Atomically thin molybdenum disulfide (MoS2) shows great potential for use in nanodevices because of its remarkable electronic, optoelectronic, and mechanical properties. These material properties are often dependent on the thickness or the number of layers, and hence Raman spectroscopy is widely used to characterize the thickness of atomically thin MoS2 due to the sensitivity of the vibrational spectrum to thickness. However, the lasers used in Raman spectroscopy can increase the local surface temperature ...
Tópico(s): Nanowire Synthesis and Applications
2016 - American Chemical Society | ACS Applied Materials & Interfaces
Chang Woo Kim, Do Kyoung Kim, Woo Jin Shin, Mi Jin Choi, Yong Soo Kang, Young Soo Kang,
In the present study, the wavelength conversion effect resulting from phosphor’s position in dye-sensitized solar cells (DSSCs) is investigated. Integrating phosphor (in particular, t-LaVO4:Dy3+ downshifting phosphor) into DSSCs enables C106-organometallic dye to generate excess electrons because of the wavelength conversion process from ultraviolet to visible light. The coupling of downshifting phosphors with ultraviolet wavelengths inside DSSCs induces increasing quantities of visible light, which ...
Tópico(s): Perovskite Materials and Applications
2015 - Elsevier BV | Nano Energy
Ha Yeon Kim, Eun Hui Bae, Seong Kwon, Dong‐Wan Chae, Kyu Hun Choi, Yong‐Soo Kim, Young‐Hwan Hwang, Curie Ahn, Soo Wan Kim,
Tópico(s): Blood properties and coagulation
2015 - Springer Science+Business Media | Clinical and Experimental Nephrology
Jiyoung Kim, Jiyoung Choi, Yong Soo Kang, Jongok Won,
ABSTRACT Facilitated mixed‐matrix membranes (MMMs) containing Cu‐metal organic frameworks (Cu‐MOFs) with high CO 2 selectivity on an asymmetric polysulfone support were fabricated and examined the effect of gas separation performance using different matrices. An amorphous poly(2‐ethyl‐2‐oxazoline) (POZ) and semicrystalline poly(amide‐6‐b‐ethylene oxide) (PEBAX ® MH 1657) block copolymer were chosen as the polymeric matrix and the effect of the matrix on CO 2 separation for MMMs containing Cu‐MOFs was ...
Tópico(s): Covalent Organic Framework Applications
2015 - Wiley | Journal of Applied Polymer Science
Mi Hyeong Kim, Kang Woong Jun, Jeong Kye Hwang, Ji Il Kim, Byung Ha Chung, Bum Soon Choi, Yong‐Soo Kim, Chul Woo Yang, In Sung Moon,
The outcome of ABO-incompatible kidney transplantation (ABOi KT) has improved and is now comparable to that of ABO-compatible kidney transplantation (ABOc KT). However, ABOi KT may be associated with a higher risk of postoperative bleeding than ABOc KT.Seventy patients with ABOi KT were divided into a bleeding group (n = 9) and non-bleeding group (n = 61). General, immunologic, and hematological characteristics were compared to identify the risk factors for postoperative bleeding.Pre-emptive transplantation ...
Tópico(s): Transplantation: Methods and Outcomes
2015 - Wiley | Clinical Transplantation
Sundaram Chandrasekaran, Seung Hyun Hur, Eui Jung Kim, Balasubramaniyan Rajagopalan, Firoz Babu Kadumudi, V. Senthilkumar, Jin Suk Chung, Won Mook Choi, Yong Soo Kim,
Highly ordered γ-Fe 2 O 3 /reduced graphene oxide (RGO) was synthesized via a facile solution technique combined with calcination at various temperatures.
Tópico(s): Copper-based nanomaterials and applications
2015 - Royal Society of Chemistry | RSC Advances
Juyeop Kim, Sang Won Choi, Yong-Soo Song, Yong-Ki Yoon, Yong-Kyu Kim,
Due to technical advances in train control and wireless communications, unmanned train operation has gained in popularity of late. On the other hand, any errors involved in managing the QoS of train control traffic will cause negative consequences such as possible loss of life. Operators therefore naturally wish to scrutinize the specifications so that the wireless communications system is capable of guaranteeing the QoS of the train control traffic. In this article, we propose a feasible QoS management ...
Tópico(s): Wireless Communication Networks Research
2015 - Institute of Electrical and Electronics Engineers | IEEE Communications Magazine
Woohyung Cho, Young Rae Kim, Donghoon Song, Hyung Woo Choi, Yong Soo Kang,
A simple and effective method to increase the energy conversion efficiency is proposed and demonstrated by increasing the ion flux with a reduction in the thickness of solid polymer electrolyte layers and the mass transport distance of I − /I 3 − redox couples.
Tópico(s): Polyoxometalates: Synthesis and Applications
2014 - Royal Society of Chemistry | Journal of Materials Chemistry A
Anitha Devadoss, Sudhagar Pitchaimuthu, Santanu Das, Sang Yun Lee, Chiaki Terashima, Kazuya Nakata, Akira Fujishima, Wonbong Choi, Yong Soo Kang, Ungyu Paik,
We report the fabrication of graphene-WO3-Au hybrid membranes and evaluate their photocatalytic activity towards glucose oxidase mediated enzymatic glucose oxidation. The dual-functionality of gold nanoparticles in the reinforcement of visible light activity of graphene-WO3 membranes and improving the catalytic activity of immobilized enzymes for unique photoelectrochemical sensing application is demonstrated. This work provides new insights into the fabrication of light-sensitive hybrid materials ...
Tópico(s): Advanced biosensing and bioanalysis techniques
2014 - American Chemical Society | ACS Applied Materials & Interfaces
Da Woon Sim, In‐Jae Oh, Kyu Sik Kim, Yoo Duk Choi, Yong Soo Kwon,
Endobronchial pleomorphic adenoma is an extremely rare condition. A 32-year-old woman with exertional dyspnea and cough presented with a carinal mass on chest CT scan. The tumor was successfully removed by rigid bronchoscopy using argon plasma coagulation. Biopsy confirmed the diagnosis of pleomorphic adenoma.
Tópico(s): Tracheal and airway disorders
2014 - Lippincott Williams & Wilkins | Journal of Bronchology & Interventional Pulmonology
Chang Woo Kim, Sang Pil Suh, Mi Jin Choi, Yong Soo Kang, Young Soo Kang,
We have demonstrated the N719 dye-SrTiO3–TiO2 system for the application in dye-sensitized solar cells, which is thermodynamically more favorable for electron transport and charge separation efficiency. The heterojunction SrTiO3–TiO2 photoanode with an enlarged pore diameter was fabricated by anodization of a Ti foil substrate and sequential hydrothermal reaction. Their photoelectrochemical properties were investigated as dye-sensitized solar cells for the first time. The optimal conditions for ...
Tópico(s): Analytical Chemistry and Sensors
2013 - Royal Society of Chemistry | Journal of Materials Chemistry A
Wan‐Young Kim, Sun Ah Nam, Ho Cheol Song, Jun Sung Ko, Sang Hee Park, Hong Lim Kim, Euy Jin Choi, YONG‐SOO KIM, Jin Kim, Yong Kyun Kim,
ABSTRACT: Aim: Autophagy is a cellular process of degradation of damaged cytoplasmic components and regulates cell death or proliferation. Unilateral ureteral obstruction (UUO) is a model of progressive renal fibrosis in the obstructed kidney. And UUO is followed by compensatory cellular proliferation in the contralateral kidney. We investigate the role of autophagy in the obstructed kidney and contralateral kidney after UUO. Methods: To obtain the evidence and the patterns of autophagy during UUO, ...
Tópico(s): Autophagy in Disease and Therapy
2011 - Wiley | Nephrology
Leejin Park, Dongsoo Min, Hyunok Kim, Jinseu Park, Soo‐Young Choi, Yong Soo Park,
Abstract Background Reactive oxygen species are considered an important cause of the death of pancreatic β cells, thereby triggering the development of type 2 diabetes as well as failure of islet transplantation. The biological properties of metallothionein (MT) and superoxide dismutase (SOD) are likely to be related to their antioxidant and free‐radical scavenging abilities, but their access across biological membranes is limited. Methods We investigated whether Tat‐MT and Tat‐SOD fusion protein ...
Tópico(s): Trace Elements in Health
2011 - Wiley | Diabetes/Metabolism Research and Reviews
Alexander Birkel, Yong-Gun Lee, Dominik Koll, Xavier Van Meerbeek, Stefan Frank, Mi Jin Choi, Yong Soo Kang, Kookheon Char, Wolfgang Tremel,
Highly efficient dye-sensitized solar cells (DSSCs) with excellent long-term stability were fabricated based on tin(IV) oxide (SnO2) nanocrystals with tunable morphologies and band energy levels. The nanocrystals were prepared by a facile, fast, and energy-saving microwave-assisted solvothermal reaction. Through variation of the precursor base used during nanocrystal synthesis control over morphology was achieved—precursor metal cations are known to have a strong influence on the growth process of ...
Tópico(s): Gas Sensing Nanomaterials and Sensors
2011 - Royal Society of Chemistry | Energy & Environmental Science