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Lee S, Baek J. P16.15 An intracranial chondrosarcoma mimicking
a skull base meningioma. Neuro Oncol 2017. [DOI: 10.1093/neuonc/nox036.431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Park Y, Kim Y, Leem D, Baek J, Ko S. A retrospective clinical study of subgingival suture or double-layered suture technique for guided bone regeneration. Int J Oral Maxillofac Surg 2017. [DOI: 10.1016/j.ijom.2017.02.916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Im JH, Kwon HY, Baek J, Park SW, Durey A, Lee KH, Chung MH, Lee JS. Severe Plasmodium vivax infection in Korea. Malar J 2017; 16:51. [PMID: 28129766 PMCID: PMC5273855 DOI: 10.1186/s12936-017-1684-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Accepted: 01/05/2017] [Indexed: 01/05/2023] Open
Abstract
Background Although severe malaria by Plasmodium vivax has been increasingly reported, there are marked variations in the type and rate of the complications by geographic area. This is possibly because of the presence of concurrent falciparum malaria or bacteraemia, and of differences in underlying immune status among the infected subjects. Furthermore, published studies on P. vivax in temperate regions are limited. The present study investigated severe vivax malaria in Korea, where only vivax malaria occurs. Hence, other compounding factors are rare. Additionally, most of the patients are possibly non-immune to this malarial disease. Methods Adults with vivax malaria observed in one 860-bed university hospital from January 2006 to December 2012 were retrospectively evaluated. Seventeen patients who had travelled overseas within 6 months before the presentation of malaria were excluded. Severe vivax malaria was diagnosed according to World Health Organization criteria. Other complications were also investigated. Results Two-hundred and ten patients were enrolled, of which 88 (41.9%) were treated as inpatients and the remainder as outpatients. Eleven patients were treated in an intensive care unit; among them, five patients received mechanical ventilation, and one needed extracorporeal membrane oxygenation therapy (ECMO) additionally. Severe vivax malaria was identified in 44 patients (21.0%), and the most common severe complication was pulmonary manifestation (40/188, 21.9%), which was followed by cerebral malaria (5/210, 2.4%), shock (4/210, 1.9%), spontaneous bleeding (3/210, 1.4%), metabolic acidosis (3/210, 3.5%) and acute kidney injury (2/210, 1.0%). Unusual complications, such as splenic infarction (ten patients) and retinal haemorrhage (two patients) were sometimes observed. There were no deaths, but the case involving ECMO was potentially fatal. Conclusions Plasmodium vivax infection can be severe to be fatal and is frequently associated with various complications in non-immune adults. The frequency of each complication seems to differ from other countries. Hence, further investigation is needed to elucidate the causes and mechanisms responsible for these differences. Electronic supplementary material The online version of this article (doi:10.1186/s12936-017-1684-4) contains supplementary material, which is available to authorized users.
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Cho Y, Kim B, Bae H, Kim W, Baek J, Woo K, Lee G, Seol Y, Lee Y, Ku Y, Rhyu I, Ryoo H. Direct Gingival Fibroblast/Osteoblast Transdifferentiation via Epigenetics. J Dent Res 2017; 96:555-561. [PMID: 28081379 DOI: 10.1177/0022034516686745] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Alveolar bone resorption caused by trauma or periodontal diseases has represented a challenge for both dental clinicians and researchers. In this study, we evaluate the osteogenic potential of human gingival fibroblasts (HGFs) through a direct transdifferentiation from HGFs to functional osteoblasts via epigenetic modification and osteogenic signaling with bone morphogenetic protein 2 (BMP2) in vitro and in vivo. HGF treatment with 5-aza-2'-deoxycytidine (5-aza-dC) induced demethylation in the hypermethylated CpG islands of the osteogenic lineage marker genes RUNX2 and ALP, and subsequent BMP2 treatment successfully drove the fibroblasts to the osteoblasts' lineage. Cell morphological changes viewed under microscopy and alkaline phosphatase (ALP) and alizarin red S (ARS) staining confirmed the osteoblastic change mediated by epigenetic modification as did real-time polymerase chain reaction (PCR), methylation-specific PCR (MSP), and chromatin immunoprecipitation (ChIP) assay, which demonstrated the altered methylation patterns in the RUNX2 and ALP promoter regions and their effect on gene expression. Furthermore, micro-computed tomography (CT) analysis of in vivo mouse cell transplantation experiments showed high-density signal in the epigenetically modified HGF group; in addition, a significant amount of bone formation was observed in the transplanted material using hematoxylin and eosin (H&E) staining as well. Collectively, our results indicate that epigenetic modification permits the direct programming of HGFs into functional osteoblasts, suggesting that this approach might open a novel therapeutic avenue in alveolar bone regeneration.
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Chae E, Baek J, Rha M, Cho Y. SUN-P080: Change in Body Composition and Nutrient Intake after Chemotherapy Treatment of Breast Cancer Patients. Clin Nutr 2016. [DOI: 10.1016/s0261-5614(16)30423-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Han M, Baek J. SU-G-IeP2-08: Investigation On Signal Detectability in Volumetric Cone Beam CT Images with Anatomical Background. Med Phys 2016. [DOI: 10.1118/1.4957013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Choi Y, Han M, Baek J. SU-G-IeP2-01: A Method to Reduce Information Loss in JPEG Compressed Medical Images Using Richardson-Lucy Deconvolution. Med Phys 2016. [DOI: 10.1118/1.4957006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Durey A, Kwon HY, Im JH, Lee SM, Baek J, Han SB, Kang JS, Lee JS. Bartonella henselae infection presenting with a picture of adult-onset Still's disease. Int J Infect Dis 2016; 46:61-3. [PMID: 27000538 DOI: 10.1016/j.ijid.2016.03.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Revised: 01/19/2016] [Accepted: 03/14/2016] [Indexed: 11/26/2022] Open
Abstract
We report a patient with a clinical picture of suggestive for adult-onset Still's Disease (ASOD) due to Bartonella infection. A 42-year-old immunocompetent man was admitted with fever, rash, arthralgia and sore throat. As his clinical picture suggested ASOD except unusual skin manifestation, we treated him on steroid and ibuprofen. His fever and constitutional symptoms responded immediately within 24hrs of commencing therapy, yet rash and leukocytosis remained. Meanwhile, Bartonella infection was proved by culture of bone marrow. Minocyclin treatment started combined with hydroxychloroquine sulfate and the patient discharged with overall improvement.
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Kim D, Hwangbo Y, Baek J, Bae J, Moon J, Yang K. Correlation between the apnea–hypopnea index determined by Sleepstyle HC608, a continuous positive airway pressure device and by manual scoring in patients with obstructive sleep apnea syndrome. Sleep Med 2015. [DOI: 10.1016/j.sleep.2015.02.489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Lee C, Han M, Baek J. SU-E-I-10: Investigation On Detectability of a Small Target for Different Slice Direction of a Volumetric Cone Beam CT Image. Med Phys 2015. [DOI: 10.1118/1.4924007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Baek J, Lee J. SU-E-I-73: Visible Image Sequence Based Bio Signal Extraction System and Algorithm for Personal Healthcare. Med Phys 2015. [DOI: 10.1118/1.4924070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Lee H, Yoon J, Lee E, Cho S, Park K, Choi W, Baek J, Keum K, Koom W. SU-E-J-64: Feasibility Study of Surgical Clips for Fiducial Tracking in CyberKnife System. Med Phys 2015. [DOI: 10.1118/1.4924151] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Jin SM, Kim TH, Oh S, Baek J, Joung JY, Park SM, Cho YY, Sohn SY, Hur KY, Lee MS, Lee MK, Kim JH. Association between the extent of urinary albumin excretion and glycaemic variability indices measured by continuous glucose monitoring. Diabet Med 2015; 32:274-9. [PMID: 25307609 DOI: 10.1111/dme.12607] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Revised: 08/02/2014] [Accepted: 10/06/2014] [Indexed: 11/27/2022]
Abstract
AIMS The contribution of glycaemic variability to the microvascular complication of diabetes has not been established. We examined whether there is an independent association between indices of glycaemic variability in continuous glucose monitoring and extent of albuminuria. METHODS A total of 173 patients with Type 2 diabetes (without insulin therapy, n = 96; with insulin therapy, n = 77) who had unexplained large fluctuations in blood glucose values underwent three-day continuous glucose monitoring. We used a multinomial logistic regression model to determine whether the indices of glycaemic variability independently affected the odds of having a spot urine albumin/creatinine ratio of 30-299 mg/g and ≥ 300 mg/g. RESULTS Higher standard deviation (P = 0.002), mean of daily differences (P = 0.023) and mean amplitude of glycaemic excursion (P = 0.043) significantly increased the odds of having a urine albumin/creatinine ratio of ≥ 300 mg/g. In multivariable analysis, only higher standard deviation, but not mean amplitude of glycaemic excursion and mean of daily differences, independently increased the odds of having a urine albumin/creatinine ratio of ≥ 300 mg/g (P = 0.025). Coefficient of variation (sd/mean) was not associated with the odds of having a urine albumin/creatinine ratio of 30-299 or ≥ 300 mg/g. CONCLUSIONS The independent association between standard deviation and the extent of albuminuria was lost when the measures were normalized by mean glucose level. At least in terms of relative measures of glycaemic variability, we failed to demonstrate an independent association between glycaemic variability and albuminuria extent in patients with inadequately controlled Type 2 diabetes.
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Baek J, Kim Y, Lee G, Lee W. 239. A multivariate analysis of risk factors associated with permanent ileostomy following sphincter-preserving surgery for rectal cancer. Eur J Surg Oncol 2014. [DOI: 10.1016/j.ejso.2014.08.232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Lim H, Kim D, Kim T, Kim S, Baek J, Chang H, Park J, Oh J. Is Elective Inguinal Radiation Therapy Necessary for Locally Advanced Rectal Cancer Involving Anal Canal? Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.1249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Woo J, Kim J, Baek J, Kim M, Kim S, Lee S, Cho J. Evaluation of Fast Adaptive Planning Method Using Deformable Image Registration and GPU Based RTP for Lung Cancer Patients With Concurrent Chemoradiation Therapy. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.2530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Baek J, Lesmes L, Lu ZL. Bayesian adaptive estimation of the sensory memory decay function: the quick Partial Report method. J Vis 2014. [DOI: 10.1167/14.10.157] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Woo J, Kim J, Baek J, Shin H, Kim S, Lee S, Jeon B, Cho J, Kim J, Seong J. Evaluation of Dose Summation Method Using Deformable Registration in Adaptive Planning for Locally-Advanced Pancreatic Cancer. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Baek J, Oh Y, Park S, Choi E, Jeon K, Kim O, Kim J. SU-E-J-17: Assessment for Setup Uncertainty of Frameless Localization System of Stereotactic Radiosurgery Using Cone Beam Computed Tomography. Med Phys 2013. [DOI: 10.1118/1.4814229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Baek J, Beachey DJ. SU-E-T-421: 6MV Radiation Small Field Dose: Off Axis and Penumbra Effects, a Study with Radiochromic Film. Med Phys 2012; 39:3801. [PMID: 28517222 DOI: 10.1118/1.4735510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
PURPOSE To accurately determine relative dose factor scaling, tissue depth relation, and penumbra details of small 6MV radiation fields with an emphasis on far-off-central-axis fields for various MLC designs -subject matter important in the context of SRS, FSRT, SBRT, and IMRT. METHODS Radiochromic film designed for quantitative dosimetry, EBT3™ film (Ashland Inc.) can be reliably used as a relative dosimeter to within 1% accuracy if one controls for both film and flatbed scanner variation. This enabled a study of the fine detail of small radiation fields and the impact upon these small dose profiles by different MLC designs both on central axis and off. In particular, the impact of leaf-end penumbra from bifocal MLC Optifocus (Siemens) and Synergy Beam Modulator (Elekta) is examined.EBT3 films were placed at 100cm SAD in solid water phantom and irradiated to 200 MU at various depths 1.5cm - 20cm and for various off-axis locations. The films were analysed to give the detailed dosimetric profile of each small field and relate them to both a standard reference field (10 × 10)cm2 and to a broadfield flatness/symmetry irradiation (20 × 20)cm2 . Films were scanned at ∼20 hours post irradiation on an Epson 2000 flatbed scanner and analysed using FilmQAPro and in-house methods. RESULTS As small field size decreases, the field center falls within the penumbra of each MLC edge for megavoltage photon energies. The penumbral effects cause the conventional dosimetric quantity SP to sharply depart from the smooth fieldsize dependence for larger conventional fields. CONCLUSIONS Careful characterization of small field dose and leaf end modeling within a TPS is crucial in both predicting accurate small field dosimetry and off-axis dosimetry.
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Kim Y, Kim K, Baek J, Park H, Lee H, Sohn M, Kim K. Usefulness of Impulse Oscillometry In Children With Eosinophilic Bronchitis. J Allergy Clin Immunol 2012. [DOI: 10.1016/j.jaci.2011.12.873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Baek J, Zhao Y, Lu ZL, Dosher B. Visual attention in spatial cuing and visual search. J Vis 2011. [DOI: 10.1167/11.11.162] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Kim H, Koh J, Baek J, Seo Y, Kim B, Kim J, Lee J, Ryoo H, Jung H. Retinyl retinoate, a novel hybrid vitamin derivative, improves photoaged skin: a double-blind, randomized-controlled trial. Skin Res Technol 2011; 17:380-5. [PMID: 21435021 DOI: 10.1111/j.1600-0846.2011.00512.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND All-trans-retinoic acid (RA) and all-trans-retinol (ROL) are not widely used as anti-wrinkle agents due to their irritancy and photo-stability, respectively. Therefore, the safety and photo-stability in the development of RA or ROL derivatives have been an important issue. AIM To identify the efficacy of retinyl retinoate as an anti-aging agent of cosmetics in treating females over 30 years old with periorbital wrinkles. METHODS The clinical study was a prospective, double-blind, randomized, and controlled study with a total of 11 Korean women. At every 4 weeks, the effectiveness was assessed with a global photodamage score, photographs, and image analysis using replicas and visiometers. The dermal distance and intensity was also evaluated using Dermascan C. RESULTS A statistically significant improvement in facial wrinkles (P<0.05) in eleven volunteers was observed in a clinical trial. The successive application of 0.06% retinyl retinoate cream for 3 months showed decreased depth and area of wrinkles in comparison with 0.075% retinol cream. The visual wrinkle improvement and the maximum roughness improvement rate (R2) for retinyl retinoate cream were 22% higher than that of retinol cream after 12 weeks. A statistically significant increase was observed after 8 and 4 weeks for dermal distance and dermal intensity, respectively (P<0.05). CONCLUSIONS Retinyl retinoate had characteristic features of new anti-aging agents, and effectively improved facial wrinkle conditions.
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Ryoo H, Bae S, Kim M, Lee KH, Song H, Chae Y, Lee W, Baek J. Phase II study of fixed-dose-rate infusion of gemcitabine and UFT combination chemotherapy in patients with advanced bile duct cancer: Daegu Gyeoungbuk Oncology Group. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.4_suppl.280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
280 Background: This phase II study evaluated efficacy of fixed dose rate (FDR) infusion of gemcitabine (10mg/m2/min) and UFT combination in chemo-naïve patients with advanced bile duct cancer. Methods: This was an open-label, single-arm, multicenter, phase II study with a Simon two-stage minimax design. Patients received the FDR gemcitabine 1,000mg/m2 for 3 consecutive weeks and UFT 400 mg/m2 on days 1-21. The cycle was repeated every 28 days. The primary end point was Response Evaluation Criteria in Solid Tumors (RECIST) -defined objective response rate. Secondary end points included clinical benefit response (CBR), safety, progression-free survival (PFS), and overall survival (OS). Clinical characteristics including four single nucleotide polymorphisms in DNA repair genes (RecQ1, RAD54L, XRCC1, ATM) were evaluated whether these influence the overall survival. Results: Between December 2006 and February 2008, fifty-one patients were enrolled, with a median age of 58 years. The majority of patients (76%) had intra-hepatic disease. Fourteen patients (27%) had a RECIST investigator-assessed, partial response (PR); disease control rate (PR + stable disease) was 55%. CBR was 14% among 37 evaluable patients. Hematologic toxicity was main grade 3 or 4 treatment-related adverse events. Median PFS was 4.0 months (95% CI, 2.9 to 5.1 months). Median OS was 7.0 months (95% CI, 3.5 to 10.5 months). Intrahepatic disease, poor performance, and, XRCC1 R194W C/C type were predictive markers of poor overall survival. Conclusions: FDR gemcitabine and UFT demonstrated apparent activity in patients with advanced bile duct cancer. However, this activity did not translate to prolong survival. The location of disease, performance status, and, polymorphic variants of DNA repair genes may affect clinical outcome of patients with advanced bile duct cancer. No significant financial relationships to disclose.
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Baek J, Lee Y, Jee H, Kim K, Sohn M, Kim K. Relationship between H1N1 Induced Asthmatic Symptoms and Airway Hyperresponsiveness in Children. J Allergy Clin Immunol 2011. [DOI: 10.1016/j.jaci.2010.12.101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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