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Sang Joon Won, Dahvid Davda, Kristin J Labby, Sin Ye Hwang, Rachel E Pricer, Jaimeen D Majmudar, Kira A Armacost, Laura A Rodriguez, Christina L Rodriguez, Fei San Chong, Kristopher A Torossian, Jasmine Palakurthi, Edward S Hur, Jennifer L Meagher, Charles L Brooks, Jeanne A Stuckey, Brent R Martin
Post-translational S-palmitoylation directs the trafficking and membrane localization of hundreds of cellular proteins, often involving a coordinated palmitoylation cycle that requires both protein acyl transferases (PATs) and acyl protein thioesterases (APTs) to actively re-distribute S-palmitoylated proteins towards different cellular membrane compartments. This process is necessary for the trafficking and oncogenic signaling of S-palmitoylated Ras isoforms, and potentially other peripheral membrane proteins...
October 17, 2016: ACS Chemical Biology
Min Jung Kim, Min Seok Hur, Byung Gon Choi, Soo Young Kim, Yang Won Lee, Yong Beom Choe, Kyu Joong Ahn
Dermatofibrosarcoma protuberans (DFSP) is a rare disease of dermal fibroblastic origin that accounts for less than 5% of all soft tissue sarcomas in adults. DFSP grows slowly and is an asymptomatic lesion at the initial diagnosis. Herein, we report a case of multiple pedunculated nodules as a variant of DFSP. A 47-year-old man presented with a 7-month history of multiple well-circumscribed, firm, pedunculated nodules on the inguinal area. Histopathologic examination results showed densely packed uniform spindle cells with a storiform and cartwheel pattern, and positivity for CD34...
October 2016: Annals of Dermatology
Cindo O Nicholson, Matthew B Friedersdorf, Jack D Keene
RNA-binding proteins (RBPs) and non-coding RNAs orchestrate post-transcriptional processes through the recognition of specific sites on targeted transcripts. Thus, understanding the connection between binding to specific sites and active regulation of the whole transcript is essential. Many immunoprecipitation techniques have been developed that identify either whole transcripts or binding sites of RBPs on each transcript using cell lysates. However, none of these methods simultaneously measures the strength of each binding site, and quantifies binding to whole transcripts...
October 14, 2016: RNA
Youn Jin Choi, Je-Keun Rhee, Soo Young Hur, Min Sung Kim, Sung Hak Lee, Yeun-Jun Chung, Tae-Min Kim, Sug Hyung Lee
Intra-individual tumoural heterogeneity (ITH) is a hallmark of solid tumours and impedes accurate genomic diagnosis and selection of proper therapy. The purpose of this study was to identify ITH of ovarian high-grade serous carcinomas (OSCs) and to determine the utility of ascitic cancer cells as a resource for mutation profiling in spite of ITH. We performed whole-exome sequencing, copy number profiling, and DNA methylation profiling of four OSC genomes using multiregional biopsy from 13 intra-ovarian lesions, 12 extra-ovarian tumour lesions (omentum/peritoneum), and ascitic cells...
October 14, 2016: Journal of Pathology
Young-Kuk Kim, Teyoun Kang, Moon Youn Jung, Min Sup Hur
The effects of laser-pulse polarization on the generation of an electrostatic shock in an overdense plasma were investigated using particle-in-cell simulations. We found, from one-dimensional simulations, that total and average energies of reflected ions from a circular polarization- (CP) driven shock front are a few times higher than those from a linear polarization- (LP) driven one for a given pulse energy. Moreover, it was discovered that the pulse transmittance is the single dominant factor for determining the CP-shock formation, while the LP shock is affected by the plasma scale length as well as the transmittance...
September 2016: Physical Review. E
Chaewon Chang, Changhee Han, Yeongcheol Han, Soon Do Hur, Sanghee Lee, Hideaki Motoyama, Shugui Hou, Sungmin Hong
Well-defined variations in the enrichments and isotopic compositions of Pb have been observed in snow from Dome Fuji and Dome A in the central East Antarctic Plateau (EAP) over the past few decades. The Pb isotopic fingerprints indicate that the rapid increase in Pb enrichments from the mid-1970s, reaching a peak in ~1980, is due to the massive use of leaded gasoline in northern South America, especially Brazil. Since then, they show a continuous decline, mostly due to the significant removal of the Pb additives from gasoline in Brazil in the 1980s and, subsequently, in Argentina and Chile in the 1990s...
October 14, 2016: Environmental Science & Technology
Ju Hyoung Lee, Kyeong Min Jo, Tae Oh Kim, Jong Ha Park, Seung Hyun Park, Jae Won Jung, So Chong Hur, Sung Yeun Yang
Brunner's gland hamartomas are small benign lesions that are most commonly found in the bulb of the duodenum. They are very uncommon, and most are found incidentally during upper gastrointestinal series or esophagogastroduodenoscopy. The lesions tend to be asymptomatic, but patients may present with symptoms of duodenal obstruction or hemorrhage secondary to ulceration. Histologically, a Brunner's gland hamartoma consists of the components of Brunner's gland cells, as well as glandular, adipose and muscle cells...
October 13, 2016: Clinical Endoscopy
Yan Xu, Jie Chen, Lan Xiao, Hee Kyoung Chung, Yuan Zhang, Joseph C Robinson, Jaladanki N Rao, Jian-Ying Wang
The RNA-binding protein HuR is crucial for normal intestinal mucosal regeneration by modulating the stability and translation of target mRNAs, but the exact mechanism underlying HuR trafficking between the cytoplasm and nucleus remains largely unknown. Here we report a novel function of transcription factor JunD in the regulation of HuR subcellular localization through the control of importin-α1 expression in intestinal epithelial cells (IECs). Ectopically expressed JunD specifically inhibited importin-α1 at the transcription level, and this repression is mediated via interaction with CREB-binding site that was located at the proximal region of importin-α1 promoter...
October 12, 2016: American Journal of Physiology. Cell Physiology
Sang-Man Jin, Yong Joo Hong, Jae Hwan Jee, Ji Cheol Bae, Kyu Yeon Hur, Moon-Kyu Lee, Jae Hyeon Kim
BACKGROUND: Low serum albumin concentration is associated with a high risk of morbidity and mortality from cardiovascular diseases. However, high serum albumin level appears to be linked to metabolic syndrome (MetS). This study aimed to dissect the relative contributions of baseline and change in serum albumin concentration to the risk of incident metabolic syndrome. METHODS: This was a 5-year (63,060 person-years) retrospective longitudinal study of 12,567 participants without metabolic syndrome, diabetes, or cardiovascular disease who were enrolled in a health screening program...
November 2016: Metabolism: Clinical and Experimental
Myung Hun Kim, Woojune Hur, Goeun Choi, Hye Sook Min, Tae Hyun Choi, Young Bin Choy, Jin-Ho Choy
A bioabsorbable polymeric bone plate enabled with both diagnostic and therapeutic functionalities (radiopacity and sustained drug release, respectively) is proposed. To this end, a drug-inorganic nanohybrid (RS-LDH) is examined as a theranostic agent by intercalating an anti-resorptive bone remodeling drug, risedronate (RS) into a layered double hydroxide (LDH) via an ion-exchange reaction. The RS-LDH is prepared as a sheet with a biodegradable polymer, poly(lactic-co-glycolic acid), and is then attached onto the clinically approved bioabsorbable bone plate to produce the theranostic plate...
October 10, 2016: Advanced Healthcare Materials
Hyun Kuk Kim, Myung Ho Jeong, Youngkeun Ahn, Shung Chull Chae, Young Jo Kim, Seung Ho Hur, In Whan Seong, Taek Jong Hong, Dong Hoon Choi, Myeong Chan Cho, Chong Jin Kim, Ki Bae Seung, Yang Soo Jang, Seung Woon Rha, Jang Ho Bae, Sung Soo Kim, Seung Jung Park
BACKGROUND: Despite large reductions in door-to-balloon times over the period, several studies from regional and national data showed that annual mortality rates were not decreased among patients who underwent primary percutaneous coronary intervention (PCI). However, these studies mostly focused on door-to-balloon time, and there was no consideration of total ischemic time in a trend of mortality. The aim of this study was to assess the annual trend between time to treatment and 1-month mortality among patients undergoing primary PCI...
October 6, 2016: Journal of Cardiology
Jung Ju Choi, Hong Soon Kim, Kyung Cheon Lee, Hojin Hur, Youn Yi Jo
BACKGROUND: The purpose of this study was to assess whether preanesthetic laboratory values can predict in-hospital mortality and morbidity in patients who have undergone burr hole craniostomy due to chronic subdural hematoma. METHODS: From January 2007 to February 2016, the records of 502 consecutive patients who underwent burr hole craniotomy were analyzed. All cases of burr hole craniostomy were fitted with a drain, as required by our institutional protocol. RESULTS: Patients' demographic data and preoperative laboratory values were subjected to logistic regression analysis to predict in-hospital mortality and morbidity after burr hole craniostomy...
October 7, 2016: Journal of Anesthesia
Hyunji Lee, Jiyoung Park, Chaewon Jung, Dongfei Han, Jiyoung Seo, Joong-Hoon Ahn, Youhoon Chong, Hor-Gil Hur
No abstract text is available yet for this article.
October 7, 2016: Applied Microbiology and Biotechnology
Chul Hwan Park, Kyunghwa Han, Jin Hur, Sang Min Lee, Ji Won Lee, Sung Ho Hwang, Jae Seung Seo, Kye Ho Lee, Woocheol Kwon, Tae Hoon Kim, Byoung Wook Choi
BACKGROUND: An optimal method of pre-operative localization for pulmonary nodules has yet to be established. This systematic review and meta-analysis aimed to compare the success and complication rates associated with three pulmonary nodule localization methods for video-assisted thoracoscopic surgery (VATS): hook-wire localization, microcoil localization, and lipiodol localization. MATERIALS AND METHODS: We searched the PubMed, MEDLINE, and EMBASE databases for prospective or retrospective English language studies of VATS localization in adult patients...
October 4, 2016: Chest
Jinwoo Park, Benjamin Hur, Sungmin Rhee, Sangsoo Lim, Min-Su Kim, Kwangsoo Kim, Wonshik Han, Sun Kim
A breast cancer subtype classification scheme, PAM50, based on genetic information is widely accepted for clinical applications. On the other hands, experimental cancer biology studies have been successful in revealing the mechanisms of breast cancer and now the hallmarks of cancer have been determined to explain the core mechanisms of tumorigenesis. Thus, it is important to understand how the breast cancer subtypes are related to the cancer core mechanisms, but multiple studies are yet to address the hallmarks of breast cancer subtypes...
August 29, 2016: Journal of Bioinformatics and Computational Biology
Da Young Lee, Jae Hwan Jee, Ji Eun Jun, Tae Hyuk Kim, Sang-Man Jin, Kyu Yeon Hur, Sun Wook Kim, Jae Hoon Chung, Moon-Kyu Lee, Jae Hyeon Kim
The objective of this study is to evaluate the predictive values of baseline thyroid-stimulating hormone and the rate of thyroid-stimulating hormone change within the euthyroid state on the development of chronic kidney disease. We conducted a longitudinal study in 17,067 Korean adults with normal thyroid function and no history of thyroid disease. Incident chronic kidney disease was defined as an estimated glomerular filtration rate <60 ml/min/1.73 m(2). The rate of thyroid-stimulating hormone change was determined by subtracting the baseline thyroid-stimulating hormone level from the thyroid-stimulating hormone level measured at the last visit prior to the diagnosis of chronic kidney disease or at the final visit in subjects without chronic kidney disease, divided by the observation period (years)...
October 5, 2016: Endocrine
Seong-Hwan Park, Juil Kim, Mira Yu, Jae-Hong Park, Yong Sik Kim, Yuseok Moon
Patients with chronic intestinal ulcerative diseases such as inflammatory bowel disease (IBD) tend to exhibit abnormal lipid profiles which may affect the gut epithelial integrity. We hypothesized that epithelial cholesterol depletion may trigger inflammation-checking machinery via cholesterol-sentinel signaling molecules whose disruption in patients may aggravate inflammation and disease progression. In the present study, the sterol regulatory element-binding protein 2 (SREBP2) as the cholesterol sentinel was assessed for its involvement in the epithelial inflammatory responses in cholesterol-depleted enterocytes...
October 4, 2016: Journal of Biological Chemistry
Eun-Joo Jeon, Munkhtugs Davaatseren, Jin-Taek Hwang, Jae Ho Park, Haeng Jeon Hur, Ae Sin Lee, Mi Jeong Sung
In patients with inflammatory bowel disease (IBD), inflammation is induced and maintained by lymphangiogenesis and angiogenesis. 3,3'-Diindolylmethane (DIM) is a natural product formed in acidic conditions from indole-3-carbinol in cruciferous vegetables, and it is known for its chemotherapeutic activity. This study evaluated DIM's effects on angiogenesis, lymphangiogenesis, and inflammation in a mouse colitis model. Experimental colitis was induced in mice by administering 3% dextran sulfate sodium (DSS) via drinking water...
October 4, 2016: Journal of Agricultural and Food Chemistry
Sang-Yong Son, Long-Hai Cui, Ho-Jung Shin, Cheulsu Byun, Hoon Hur, Sang-Uk Han, Yong Kwan Cho
BACKGROUND: Compared to end-to-side anastomosis with a circular stapler, the overlap method is favored for intracorporeal esophagojejunostomy because it facilitates handling of the stapler, even in narrow spaces, and wider anastomosis. However, it associates with technical difficulties during anastomosis, including difficult traction on the esophageal stump that necessitates stay sutures. Here, we introduce a new modified overlap method that employs knotless barbed sutures (MOBS) and report the outcomes of our case series...
October 3, 2016: Surgical Endoscopy
Kelli M Sas, Pradeep Kayampilly, Jaeman Byun, Viji Nair, Lucy M Hinder, Junguk Hur, Hongyu Zhang, Chengmao Lin, Nathan R Qi, George Michailidis, Per-Henrik Groop, Robert G Nelson, Manjula Darshi, Kumar Sharma, Jeffrey R Schelling, John R Sedor, Rodica Pop-Busui, Joel M Weinberg, Scott A Soleimanpour, Steven F Abcouwer, Thomas W Gardner, Charles F Burant, Eva L Feldman, Matthias Kretzler, Frank C Brosius, Subramaniam Pennathur
Diabetes is associated with altered cellular metabolism, but how altered metabolism contributes to the development of diabetic complications is unknown. We used the BKS db/db diabetic mouse model to investigate changes in carbohydrate and lipid metabolism in kidney cortex, peripheral nerve, and retina. A systems approach using transcriptomics, metabolomics, and metabolic flux analysis identified tissue-specific differences, with increased glucose and fatty acid metabolism in the kidney, a moderate increase in the retina, and a decrease in the nerve...
September 22, 2016: JCI Insight
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