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Lee EH, Choi MH, Lee KH, Kim D, Jeong SH, Song YG, Han SH. Intrahospital transmission and infection control of Candida auris originating from a severely infected COVID-19 patient transferred abroad. J Hosp Infect 2024; 143:140-149. [PMID: 37939883 DOI: 10.1016/j.jhin.2023.10.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 10/26/2023] [Accepted: 10/30/2023] [Indexed: 11/10/2023]
Abstract
BACKGROUND Intrahospital spread of Candida auris, which survives tenaciously in many environments, can cause sustained colonization and infection. A large outbreak of C. auris was experienced in the intensive care units (ICUs) at the study hospital during the coronavirus disease 2019 (COVID-19) pandemic. METHODS The index patient with severe COVID-19, who was transferred from Vietnam in January 2022, developed C. auris candidaemia 10 days after hospitalization. From mid-June 2022 to January 2023, strengthened infection prevention and control (IPC) measures were implemented in three ICUs: (1) contact precautions and isolation (CPI) for C. auris-positive cases; (2) surveillance cultures including point-prevalence (N=718) for patients or close contacts or ICU-resident healthcare workers (HCWs); (3) intensive environmental disinfection with 10-fold diluted bleach; and (4) 2% chlorhexidine bathing for all ICU patients. Environmental cultures (ECx) on surfaces and shared objects (N=276) were conducted until early September 2022, when all ECx were negative. RESULTS Among 53 C. auris-positive patients between February 2022 and January 2023, invasive infections resulted in seven cases of candidaemia and one case of pneumonia. C. auris was isolated from reusable tympanic thermometers (TTMs) contaminated with earwax. The isolation rate of C. auris in ECx decreased from 6.8% in June 2022 to 2.0% in August 2022, and was no longer detected in TTMs. Colonization in HCWs was remarkably rare (0.5%). The number of C. auris-positive patients peaked in July (N=10) then decreased gradually. By January 2023, no C. auris were isolated in the ICU. CONCLUSION Aggressive IPC measures with CPI, ECx and surveillance, decontamination of TTMs, and bathing were effective in successfully controlling this C. auris outbreak.
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Affiliation(s)
- E H Lee
- Division of Infectious Disease, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - M H Choi
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - K H Lee
- Division of Infectious Disease, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - D Kim
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - S H Jeong
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Y G Song
- Division of Infectious Disease, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - S H Han
- Division of Infectious Disease, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea.
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Park J, Han SH, Nam SH, Lee Y. Highly Precise Laser-Induced Breakdown Spectroscopy Analysis of Major Mineral Nutrients in Edible Salts Using Miniaturized Salt Ponds and Alternating Laser-Ablation Data Sampling. Appl Spectrosc 2023; 77:1351-1361. [PMID: 37844583 DOI: 10.1177/00037028231206195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2023]
Abstract
In this work, we applied a hydrophilicity-enhanced solid substrate and an alternating laser-ablation data sampling (ALADS) scheme to improve laser-induced breakdown spectroscopy (LIBS) measurement precision and demonstrated the performance in analyzing K, Mg, Ca, and S contained in commercially available edible salt products. Five edible salt products from Australia, Bolivia, France, and South Korea were dissolved in water and a tiny volume of each solution was dropped on the solid substrate, that is, a miniaturized salt pond. After being dried, the residual salt crystals distributed still inhomogeneously, but the homogeneity could be significantly improved in comparison with that from typical drop-and-dry methods. The ALADS scheme was applied to extract three precise measurements from 9798 single-shot LIBS spectra covering the entire salt pond. The measurements obtained by ALADS were found to agree well with one another regardless of the inhomogeneous distribution of salt crystals. As a result, the measurement precision was proved remarkably. Limits of detection for K, Mg, Ca, and S were estimated to be 0.64, 1.7, 14, and 530 mg/kg, respectively, which are enough to analyze those elements contained in salts typically at the level of 100 parts per million (ppm) to ∼3 wt% for the purpose of salt quality assessment.
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Affiliation(s)
- Jeong Park
- Department of Chemistry, Mokpo National University, Jeonnam, Republic of Korea
| | - Song-Hee Han
- Division of Navigation Science, Mokpo National Maritime University, Jeonnam, Republic of Korea
| | - Sang-Ho Nam
- Department of Chemistry, Mokpo National University, Jeonnam, Republic of Korea
- Plasma Spectroscopy Analysis Center, Mokpo National University, Jeonnam, Republic of Korea
| | - Yonghoon Lee
- Department of Chemistry, Mokpo National University, Jeonnam, Republic of Korea
- Plasma Spectroscopy Analysis Center, Mokpo National University, Jeonnam, Republic of Korea
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Choi HB, Moon SH, Kim H, Guthikonda N, Ham KS, Han SH, Nam SH, Lee YH. A Simple Laser-Induced Breakdown Spectroscopy Method for Quantification and Classification of Edible Sea Salts Assisted by Surface-Hydrophilicity-Enhanced Silicon Wafer Substrates. Sensors (Basel) 2023; 23:9280. [PMID: 38005666 PMCID: PMC10674645 DOI: 10.3390/s23229280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 11/16/2023] [Accepted: 11/17/2023] [Indexed: 11/26/2023]
Abstract
Salt, one of the most commonly consumed food additives worldwide, is produced in many countries. The chemical composition of edible salts is essential information for quality assessment and origin distinction. In this work, a simple laser-induced breakdown spectroscopy instrument was assembled with a diode-pumped solid-state laser and a miniature spectrometer. Its performances in analyzing Mg and Ca in six popular edible sea salts consumed in South Korea and classification of the products were investigated. Each salt was dissolved in water and a tiny amount of the solution was dropped and dried on the hydrophilicity-enhanced silicon wafer substrate, providing homogeneous distribution of salt crystals. Strong Mg II and Ca II emissions were chosen for both quantification and classification. Calibration curves could be constructed with limits-of-detection of 87 mg/kg for Mg and 45 mg/kg for Ca. Also, the Mg II and Ca II emission peak intensities were used in a k-nearest neighbors model providing 98.6% classification accuracy. In both quantification and classification, intensity normalization using a Na I emission line as a reference signal was effective. A concept of interclass distance was introduced, and the increase in the classification accuracy due to the intensity normalization was rationalized based on it. Our methodology will be useful for analyzing major mineral nutrients in various food materials in liquid phase or soluble in water, including salts.
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Affiliation(s)
- Han-Bum Choi
- Department of Chemistry, Mokpo National University, Jeonnam, Muan-gun 58554, Republic of Korea; (H.-B.C.); (S.-H.M.)
| | - Seung-Hyun Moon
- Department of Chemistry, Mokpo National University, Jeonnam, Muan-gun 58554, Republic of Korea; (H.-B.C.); (S.-H.M.)
| | - Hyang Kim
- Plasma Spectroscopy Analysis Center, Mokpo National University, Jeonnam, Muan-gun 58554, Republic of Korea; (H.K.); (N.G.)
| | - Nagaraju Guthikonda
- Plasma Spectroscopy Analysis Center, Mokpo National University, Jeonnam, Muan-gun 58554, Republic of Korea; (H.K.); (N.G.)
| | - Kyung-Sik Ham
- Department of Food Engineering, Mokpo National University, Jeonnam, Muan-gun 58554, Republic of Korea;
| | - Song-Hee Han
- Division of Navigation Science, Mokpo National Maritime University, Jeonnam, Mokpo-si 58628, Republic of Korea;
| | - Sang-Ho Nam
- Department of Chemistry, Mokpo National University, Jeonnam, Muan-gun 58554, Republic of Korea; (H.-B.C.); (S.-H.M.)
- Plasma Spectroscopy Analysis Center, Mokpo National University, Jeonnam, Muan-gun 58554, Republic of Korea; (H.K.); (N.G.)
| | - Yong-Hoon Lee
- Department of Chemistry, Mokpo National University, Jeonnam, Muan-gun 58554, Republic of Korea; (H.-B.C.); (S.-H.M.)
- Plasma Spectroscopy Analysis Center, Mokpo National University, Jeonnam, Muan-gun 58554, Republic of Korea; (H.K.); (N.G.)
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Park JB, Ko K, Baek YH, Kwon WY, Suh S, Han SH, Kim YH, Kim HY, Yoo YH. Pharmacological Prevention of Ectopic Erythrophagocytosis by Cilostazol Mitigates Ferroptosis in NASH. Int J Mol Sci 2023; 24:12862. [PMID: 37629045 PMCID: PMC10454295 DOI: 10.3390/ijms241612862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 08/04/2023] [Accepted: 08/15/2023] [Indexed: 08/27/2023] Open
Abstract
Hepatic iron overload (HIO) is a hallmark of nonalcoholic fatty liver disease (NAFLD) with a poor prognosis. Recently, the role of hepatic erythrophagocytosis in NAFLD is emerging as a cause of HIO. We undertook various assays using human NAFLD patient pathology samples and an in vivo nonalcoholic steatohepatitis (NASH) mouse model named STAMTM. To make the in vitro conditions comparable to those of the in vivo NASH model, red blood cells (RBCs) and platelets were suspended and subjected to metabolic and inflammatory stresses. An insert-coculture system, in which activated THP-1 cells and RBCs are separated from HepG2 cells by a porous membrane, was also employed. Through various analyses in this study, the effect of cilostazol was examined. The NAFLD activity score, including steatosis, ballooning degeneration, inflammation, and fibrosis, was increased in STAMTM mice. Importantly, hemolysis occurred in the serum of STAMTM mice. Although cilostazol did not improve lipid or glucose profiles, it ameliorated hepatic steatosis and inflammation in STAMTM mice. Platelets (PLTs) played an important role in increasing erythrophagocytosis in the NASH liver. Upregulated erythrophagocytosis drives cells into ferroptosis, resulting in liver cell death. Cilostazol inhibited the augmentation of PLT and RBC accumulation. Cilostazol prevented the PLT-induced increase in ectopic erythrophagocytosis in in vivo and in vitro NASH models. Cilostazol attenuated ferroptosis of hepatocytes and phagocytosis of RBCs by THP-1 cells. Augmentation of hepatic erythrophagocytosis by activated platelets in NASH exacerbates HIO. Cilostazol prevents ectopic erythrophagocytosis, mitigating HIO-mediated ferroptosis in NASH models.
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Affiliation(s)
- Joon Beom Park
- Department of Anatomy and Cell Biology, Dong-A University College of Medicine, Busan 49201, Republic of Korea; (J.B.P.); (K.K.); (W.Y.K.)
| | - Kangeun Ko
- Department of Anatomy and Cell Biology, Dong-A University College of Medicine, Busan 49201, Republic of Korea; (J.B.P.); (K.K.); (W.Y.K.)
| | - Yang Hyun Baek
- Department of Gastroenterology, Dong-A University College of Medicine, Busan 49201, Republic of Korea;
| | - Woo Young Kwon
- Department of Anatomy and Cell Biology, Dong-A University College of Medicine, Busan 49201, Republic of Korea; (J.B.P.); (K.K.); (W.Y.K.)
| | - Sunghwan Suh
- Department of Endocrinology, Dong-A University College of Medicine, Busan 49201, Republic of Korea;
| | - Song-Hee Han
- Department of Pathology, Dong-A University College of Medicine, Busan 49201, Republic of Korea;
| | - Yun Hak Kim
- Department of Anatomy, School of Medicine, Pusan National University, Yangsan 50612, Republic of Korea;
| | - Hye Young Kim
- Department of Anatomy, Inje University College of Medicine, Busan 47392, Republic of Korea
| | - Young Hyun Yoo
- Department of Anatomy and Cell Biology, Dong-A University College of Medicine, Busan 49201, Republic of Korea; (J.B.P.); (K.K.); (W.Y.K.)
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Kim MG, Ryu JH, Lee DM, Park TS, Choi JA, Lee KC, Han SH. Removal of an intraosseous hemangioma of the frontal bone through an anterior hairline incision: a case report. Arch Craniofac Surg 2023; 24:189-192. [PMID: 37654240 PMCID: PMC10475701 DOI: 10.7181/acfs.2023.00150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 05/01/2023] [Accepted: 06/20/2023] [Indexed: 09/02/2023] Open
Abstract
An intraosseous hemangioma of the frontal bone is typically removed via a coronal incision. This procedure, while effective, can be lengthy and may result in complications such as a prominent scar and hair loss. An alternative approach involves a direct incision in the forehead, which leaves a less noticeable scar and allows a quicker recovery. However, in this specific case, the patient declined both coronal surgery and surgery through a direct forehead incision due to cosmetic concerns. Therefore, we proposed an anterior hairline incision. A 35-year-old woman presented with a firm, non-mobile, palpable mass on her right forehead. Preoperative non-contrast computed tomography revealed a heterogeneous osteolytic lesion. We performed an excisional biopsy through the anterior hairline. Postoperative non-contrast computed tomography was conducted 2 and 6 months after surgery. The wound was clean and free of complications, and there was no local recurrence. Partial resection can reduce scarring for patients who are concerned about cosmetic outcomes. However, the potential for recurrence remains a significant concern. We present this case of an anterior hairline incision for a hemangioma located in the forehead, evaluated using serial computed tomography for both preoperative and postoperative imaging.
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Affiliation(s)
- Myung-Good Kim
- Department of Plastic and Reconstructive Surgery, Dong-A University College of Medicine, Busan, Korea
| | - Jeong-Ho Ryu
- Department of Plastic and Reconstructive Surgery, Dong-A University College of Medicine, Busan, Korea
| | - Dong Min Lee
- Department of Plastic and Reconstructive Surgery, Dong-A University College of Medicine, Busan, Korea
| | - Tae-Seo Park
- Department of Plastic and Reconstructive Surgery, Dong-A University College of Medicine, Busan, Korea
| | - Ji-An Choi
- Department of Plastic and Reconstructive Surgery, Dong-A University College of Medicine, Busan, Korea
| | - Keun-Cheol Lee
- Department of Plastic and Reconstructive Surgery, Dong-A University College of Medicine, Busan, Korea
| | - Song-Hee Han
- Department of Pathology, Dong-A University College of Medicine, Busan, Korea
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Choi H, Kim H, Han SH, Kim S, Jung S, Nam SH, Lee Y. Feasibility of a Low-Power, Low-Resolution Laser-Induced Breakdown Spectroscopy Instrument for Analysis of Nickel Alloys: Quantification of the Major Alloying Elements and Classification. Appl Spectrosc 2023; 77:371-381. [PMID: 36650747 DOI: 10.1177/00037028231154615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
A simple cost-effective laser-induced breakdown spectroscopy (LIBS) instrument was used for quantification of major elements in several nickel alloys and also sorting them. A compact low-power diode-pumped solid-state laser and a miniature low-resolution spectrometer were assembled for the LIBS instrument. Material properties of the nickel alloys depend mainly on the composition of the major elements, Ni, Cr, and Fe, ranging from a few to ∼60 wt%. The emission peaks at 547.7 nm, 520.4 nm, and 438.1 nm for Ni, Cr, and Fe, respectively, were chosen for this analysis. The analytical performance was found to be enough for the quantification of Ni, Cr, and Fe in the nickel alloys. Limits of detection and accuracy were estimated to be a few weight percent (wt%) and measurement precisions were less than 10% in terms of relative standard deviation. The calibration performance of this intensity-based method was compared with that of the "ratio method" which is used in conventional optical emission spectroscopy analyses. The comparison indicates that the intensity-based method is more appropriate with the low-performance LIBS instrument that detects emission peaks of only a few major elements. Also, multivariate modeling of the six different nickel alloy samples based on the emission peak intensities of Ni, Cr, and Fe was performed using k-nearest neighbors (KNN) and linear discriminant analysis (LDA). The KNN and ordinary LDA models showed 95.0% and 98.3% classification correctness for the separate test data set, respectively. To improve classification performance further, the two-step LDA model was trained. In this approach, the two closest sample classes responsible for the decrease in the classification correctness were separately modeled in the second step to exploit their difference effectively. The two-step LDA model showed 100% correctness in classifying the test objects. Our results indicate that such a low-performance LIBS instrument can be effectively utilized for quantitative analysis of the major elements in the nickel alloys and their rapid identification or sorting in combination with an appropriate multivariate modeling algorithm.
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Affiliation(s)
- Hanbum Choi
- Department of Chemistry, Mokpo National University, Muan-gun, Korea
| | - Hyang Kim
- Plasma Spectroscopy Analysis Center, Mokpo National University, Muan-gun, Korea
| | - Song-Hee Han
- Division of Navigation Science, Mokpo National Maritime University, Mokpo, Korea
| | - Sunhye Kim
- Analysis and Assessment Group, Research Institute of Industrial Science and Technology, Pohang, Korea
| | - Sehoon Jung
- Analysis and Assessment Group, Research Institute of Industrial Science and Technology, Pohang, Korea
| | - Sang-Ho Nam
- Department of Chemistry, Mokpo National University, Muan-gun, Korea
- Plasma Spectroscopy Analysis Center, Mokpo National University, Muan-gun, Korea
| | - Yonghoon Lee
- Department of Chemistry, Mokpo National University, Muan-gun, Korea
- Plasma Spectroscopy Analysis Center, Mokpo National University, Muan-gun, Korea
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Koh M, Lee JY, Han SH, Jeon SW, Kim SJ, Cho JY, Kim SH, Jang JY, Baik GH, Jang JS. Comparison Trial between I-SCAN-Optical Enhancement and Chromoendoscopy for Evaluating the Horizontal Margins of Gastric Epithelial Neoplasms. Gut Liver 2023; 17:234-242. [PMID: 36317515 PMCID: PMC10018302 DOI: 10.5009/gnl220025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 04/26/2022] [Accepted: 05/18/2022] [Indexed: 11/05/2022] Open
Abstract
Background/Aims Endoscopic submucosal dissection is a widely used treatment for gastric epithelial neoplasms. Accurate delineation of the horizontal margins is necessary for the complete resection of gastric epithelial neoplasms. Recently, image-enhanced endoscopy has been used to evaluate horizontal margins of gastric epithelial neoplasms. The aim of this study was to investigate whether I-SCAN-optical enhancement (I-SCAN-OE) is superior to chromoendoscopy in evaluating the horizontal margin of gastric epithelial neoplasms. Methods This was a multicenter, prospective, and randomized trial. The participants were divided into two groups: I-SCAN-OE and chromoendoscopy. For both groups, we first evaluated the horizontal margins of early gastric cancer or high-grade dysplasia using white-light imaging, and then evaluated, the horizontal margins using I-SCAN-OE or chromoendoscopy. We devised a unique scoring method based on the pathological results obtained after endoscopic submucosal dissection to accurately evaluate the horizontal margins of gastric epithelial neoplasms. The delineation scores of both groups were compared, as were the ratios of positive/negative horizontal margins. Results In total, 124 patients were evaluated for gastric epithelial neoplasms, of whom 112 were enrolled in the study. A total of 112 patients participated in the study, and 56 were assigned to each group (1:1). There was no statistically significant difference in the delineation scores between the groups (chromoendoscopy, 7.80±1.94; I-SCAN-OE, 8.23±2.24; p=0.342). Conclusions I-SCAN-OE did not show superiority over chromoendoscopy in delineating horizontal margins of gastric epithelial neoplasms.
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Affiliation(s)
- Myeongseok Koh
- Departments of Internal Medicine, Dong-A University College of Medicine, Busan, Korea
| | - Jong Yoon Lee
- Departments of Internal Medicine, Dong-A University College of Medicine, Busan, Korea
| | - Song-Hee Han
- Departments of Pathology, Dong-A University College of Medicine, Busan, Korea
| | - Seong Woo Jeon
- Department of Internal Medicine, Kyungpook National University Chilgok Hospital, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Su Jin Kim
- Department of Internal Medicine, Pusan National University Yangsan Hospital, Pusan National University College of Medicine, Yangsan, Korea
| | - Joo Young Cho
- Department of Internal Medicine, CHA Gangnam Medical Center, CHA University, Seoul, Korea
| | - Seong Hwan Kim
- Department of Internal Medicine, CHA Gangnam Medical Center, CHA University, Seoul, Korea
| | - Jae Young Jang
- Department of Internal Medicine, College of Medicine, Kyung Hee University, Seoul, Korea
| | - Gwang Ho Baik
- Department of Internal Medicine, Hallym University College of Medicine, Chuncheon, Korea
| | - Jin Seok Jang
- Departments of Internal Medicine, Dong-A University College of Medicine, Busan, Korea
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Heo GY, Kim HJ, Kalantar D, Jung CY, Kim HW, Park JT, Chang TI, Yoo TH, Kang SW, Rhee CM, Kalantar-Zadeh K, Han SH. Association between Fiber Intake and Risk of Incident Chronic Kidney Disease: The UK Biobank Study. J Nutr Health Aging 2023; 27:1018-1027. [PMID: 37997724 DOI: 10.1007/s12603-023-1998-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Accepted: 09/13/2023] [Indexed: 11/25/2023]
Abstract
OBJECTIVES Dietary fiber intake is associated with a lower risk of diabetes, cardiovascular disease, and cancer. However, it is unknown whether dietary fiber has a beneficial effect on preventing the development of chronic kidney disease (CKD). DESIGN, SETTING, PARTICIPANTS AND MEASUREMENTS Using the UK Biobank prospective cohort, 110,412 participants who completed at least one dietary questionnaire and had an estimated glomerular filtration rate ≥60 mL/min/1.73 m2, urinary albumin-to-creatinine ratio <30 mg/g, and no history of CKD were included. The primary exposure was total dietary fiber density, calculated by dividing the absolute amount of daily total fiber intake by total energy intake (g/1,000 kcal). We separately examined soluble and insoluble fiber densities as additional predictors. The primary outcome was incident CKD based on diagnosis codes. RESULTS A total of 3,507 (3.2%) participants developed incident CKD during a median follow-up of 9.9 years. In a multivariable cause-specific model, the adjusted hazard ratios (aHRs; 95% confidence intervals [CIs]) for incident CKD were 0.85 (0.77-0.94), 0.78 (0.70-0.86), and 0.76 (0.68-0.86), respectively, for the second, third, and highest quartiles of dietary fiber density (reference: lowest quartile). In a continuous model, the aHR for each +∆1.0g/1,000 kcal increase in dietary fiber density was 0.97 (95% CI, 0.95-0.99). This pattern of associations was similar for both soluble and insoluble fiber densities and did not differ across subgroups of sex, age, body mass index, hypertension, diabetes, smoking, and inflammation. CONCLUSION Increased fiber intake was associated with a lower risk of CKD in this large well-characterized cohort.
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Affiliation(s)
- G Y Heo
- Seung Hyeok Han, MD, Ph.D. Yonsei University, Institute of Kidney Disease Research, College of Medicine, Department of Internal Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea, Phone: 82-2-2228-1984; Fax: 82-2-393-6884; E-mail: , (https://orcid.org/0000-0001-7923-5635)
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Park YS, Kook MC, Kim BH, Lee HS, Kang DW, Gu MJ, Shin OR, Choi Y, Lee W, Kim H, Song IH, Kim KM, Kim HS, Kang G, Park DY, Jin SY, Kim JM, Choi YJ, Chang HK, Ahn S, Chang MS, Han SH, Kwak Y, Seo AN, Lee SH, Cho MY. A Standardized Pathology Report for Gastric Cancer: 2nd Edition. J Gastric Cancer 2023; 23:107-145. [PMID: 36750994 PMCID: PMC9911618 DOI: 10.5230/jgc.2023.23.e7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 12/22/2022] [Accepted: 12/23/2022] [Indexed: 01/27/2023] Open
Abstract
The first edition of 'A Standardized Pathology Report for Gastric Cancer' was initiated by the Gastrointestinal Pathology Study Group of the Korean Society of Pathologists and published 17 years ago. Since then, significant advances have been made in the pathologic diagnosis, molecular genetics, and management of gastric cancer (GC). To reflect those changes, a committee for publishing a second edition of the report was formed within the Gastrointestinal Pathology Study Group of the Korean Society of Pathologists. This second edition consists of two parts: standard data elements and conditional data elements. The standard data elements contain the basic pathologic findings and items necessary to predict the prognosis of GC patients, and they are adequate for routine surgical pathology service. Other diagnostic and prognostic factors relevant to adjuvant therapy, including molecular biomarkers, are classified as conditional data elements to allow each pathologist to selectively choose items appropriate to the environment in their institution. We trust that the standardized pathology report will be helpful for GC diagnosis and facilitate large-scale multidisciplinary collaborative studies.
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Affiliation(s)
- Young Soo Park
- Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | | | - Baek-hui Kim
- Department of Pathology, Korea University Guro Hospital, Seoul, Korea
| | - Hye Seung Lee
- Department of Pathology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Dong-Wook Kang
- Department of Pathology, Chungnam National University Sejong Hospital, Chungnam National University School of Medicine, Sejong, Korea
| | - Mi-Jin Gu
- Department of Pathology, Yeungnam University College of Medicine, Daegu, Korea
| | - Ok Ran Shin
- Department of Hospital Pathology, Uijeongbu St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Uijeongbu, Korea
| | - Younghee Choi
- Department of Pathology, Hallym University Dongtan Sacred Heart Hospital, Hwaseong, Korea
| | - Wonae Lee
- Department of Pathology, Dankook University College of Medicine, Cheonan, Korea
| | - Hyunki Kim
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea
| | - In Hye Song
- Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Kyoung-Mee Kim
- Department of Pathology and Translational Genomics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Hee Sung Kim
- Department of Pathology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
| | - Guhyun Kang
- LabGenomics Clinical Laboratories, Seongnam, Korea
| | | | - So-Young Jin
- Department of Pathology, Soonchunhyang University Seoul Hospital, Seoul, Korea
| | - Joon Mee Kim
- Department of Pathology, Inha University School of Medicine, Incheon, Korea
| | - Yoon Jung Choi
- Department of Pathology, Yongin Severance Hospital, Yonsei University College of Medicine, Yongin, Korea
| | - Hee Kyung Chang
- Department of Pathology, Kosin University Gospel Hospital, Kosin University College of Medicine, Busan, Korea
| | - Soomin Ahn
- Department of Pathology and Translational Genomics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Mee Soo Chang
- Department of Pathology, Seoul National University Boramae Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Song-Hee Han
- Department of Pathology, Dong-A University College of Medicine, Busan, Korea
| | - Yoonjin Kwak
- Department of Pathology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - An Na Seo
- Department of Pathology, School of Medicine, Kyungpook National University, Kyungpook National University Chilgok Hospital, Daegu, Korea
| | - Sung Hak Lee
- Department of Hospital Pathology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
| | - Mee-Yon Cho
- Department of Pathology, Wonju Severance Christian Hospital, Yonsei University Wonju College of Medicine, Wonju, Korea.
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Park YS, Kook MC, Kim BH, Lee HS, Kang DW, Gu MJ, Shin OR, Choi Y, Lee W, Kim H, Song IH, Kim KM, Kim HS, Kang G, Park DY, Jin SY, Kim JM, Choi YJ, Chang HK, Ahn S, Chang MS, Han SH, Kwak Y, Seo AN, Lee SH, Cho MY. A standardized pathology report for gastric cancer: 2nd edition. J Pathol Transl Med 2023; 57:1-27. [PMID: 36647283 PMCID: PMC9846007 DOI: 10.4132/jptm.2022.12.23] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 12/23/2022] [Indexed: 01/18/2023] Open
Abstract
The first edition of 'A Standardized Pathology Report for Gastric Cancer' was initiated by the Gastrointestinal Pathology Study Group of the Korean Society of Pathologists and published 17 years ago. Since then, significant advances have been made in the pathologic diagnosis, molecular genetics, and management of gastric cancer (GC). To reflect those changes, a committee for publishing a second edition of the report was formed within the Gastrointestinal Pathology Study Group of the Korean Society of Pathologists. This second edition consists of two parts: standard data elements and conditional data elements. The standard data elements contain the basic pathologic findings and items necessary to predict the prognosis of GC patients, and they are adequate for routine surgical pathology service. Other diagnostic and prognostic factors relevant to adjuvant therapy, including molecular biomarkers, are classified as conditional data elements to allow each pathologist to selectively choose items appropriate to the environment in their institution. We trust that the standardized pathology report will be helpful for GC diagnosis and facilitate large-scale multidisciplinary collaborative studies.
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Affiliation(s)
- Young Soo Park
- Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | | | - Baek-hui Kim
- Department of Pathology, Korea University Guro Hospital, Seoul, Korea
| | - Hye Seung Lee
- Department of Pathology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Dong-Wook Kang
- Department of Pathology, Chungnam National University Sejong Hospital, Chungnam National University School of Medicine, Sejong, Korea
| | - Mi-Jin Gu
- Department of Pathology, Yeungnam University College of Medicine, Daegu, Korea
| | - Ok Ran Shin
- Department of Hospital Pathology, Uijeongbu St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Uijeongbu, Korea
| | - Younghee Choi
- Department of Pathology, Hallym University Dongtan Sacred Heart Hospital, Hwaseong, Korea
| | - Wonae Lee
- Department of Pathology, Dankook University College of Medicine, Cheonan, Korea
| | - Hyunki Kim
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea
| | - In Hye Song
- Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Kyoung-Mee Kim
- Department of Pathology and Translational Genomics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Hee Sung Kim
- Department of Pathology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
| | - Guhyun Kang
- LabGenomics Clinical Laboratories, Seongnam, Korea
| | | | - So-Young Jin
- Department of Pathology, Soonchunhyang University Seoul Hospital, Seoul, Korea
| | - Joon Mee Kim
- Department of Pathology, Inha University School of Medicine, Incheon, Korea
| | - Yoon Jung Choi
- Department of Pathology, Yongin Severance Hospital, Yonsei University College of Medicine, Yongin, Korea
| | - Hee Kyung Chang
- Department of Pathology, Kosin University Gospel Hospital, Kosin University College of Medicine, Busan, Korea
| | - Soomin Ahn
- Department of Pathology and Translational Genomics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Mee Soo Chang
- Department of Pathology, Seoul National University Boramae Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Song-Hee Han
- Department of Pathology, Dong-A University College of Medicine, Busan, Korea
| | - Yoonjin Kwak
- Department of Pathology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - An Na Seo
- Department of Pathology, School of Medicine, Kyungpook National University, Kyungpook National University Chilgok Hospital, Daegu, Korea
| | - Sung Hak Lee
- Department of Hospital Pathology, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea,Corresponding Author: Sung Hak Lee, MD, PhD, Department of Hospital Pathology, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, 222 Banpodaero, Seocho-gu, Seoul 06591, Korea Tel: +82-2-2258-1617, Fax: +82-2-2258-1627, E-mail:
| | - Mee-Yon Cho
- Department of Pathology, Wonju Severance Christian Hospital, Yonsei University Wonju College of Medicine, Wonju, Korea,Corresponding Author: Mee-Yon Cho, MD, PhD, Department of Pathology, Wonju Severance Christian Hospital, Yonsei University Wonju College of Medicine, 20 Ilsan-ro, Wonju 26426, Korea Tel: +82-33-741-1553, Fax: +82-33-731-6590, E-mail:
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11
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Ju MH, Jang EJ, Kang SH, Roh YH, Jeong JS, Han SH. Six-Transmembrane Epithelial Antigen of Prostate 4: An Indicator of Prognosis and Tumor Immunity in Hepatocellular Carcinoma. J Hepatocell Carcinoma 2023; 10:643-658. [PMID: 37101765 PMCID: PMC10124562 DOI: 10.2147/jhc.s394973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Accepted: 03/14/2023] [Indexed: 04/28/2023] Open
Abstract
Purpose The six-transmembrane epithelial antigen of prostate 4 (STEAP4) has been linked to tumor progression via its involvement in inflammatory responses, oxidative stress, and metabolism. However, STEAP4 has rarely been studied in hepatocellular carcinoma (HCC). We explored STEAP4 expression associated with tumor prognosis to understand its role in tumor biology in HCC. Patients and Methods STEAP4 mRNA and protein expressions were primarily analyzed using bioinformatics tools based on The Cancer Genome Atlas database to understand the expression pattern, molecular mechanism, prognostic impact, and association with immune cell infiltration. We further investigated the association between STEAP4 protein expression and clinicopathological parameters and their predictive value in HCC patients using immunohistochemical staining of tissue microarrays. Results The expression of STEAP4 mRNA and protein in HCC tissues was significantly lower than in normal liver tissues. Reduced expression of STEAP4 was linked to advanced HCC stages, poor recurrence-free survival (RFS), and overall survival. Furthermore, reduced STEAP4 expression was a significant predictor of worse RFS in univariate and multivariate analyses in the immunohistochemical cohort. GO, KEGG, and GSEA analyses revealed that STEAP4 is related to numerous biological processes and pathways, including drug metabolism, DNA replication, RNA metabolism, and immune response. In terms of the immune system, the decreased level of STEAP4 was correlated with the immunosuppressive microenvironment. Conclusion Our data indicated that reduced STEAP4 expression was significantly associated with tumor aggressiveness and poor prognosis, possibly because of its link to various biological processes and induction of HCC immune evasion. Therefore, STEAP4 expression may serve as a potential prognostic biomarker for cancer progression and immunity, as well as a therapeutic target in HCC.
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Affiliation(s)
- Mi Ha Ju
- Department of Pathology, Dong-A University College of Medicine, Busan, Republic of Korea
| | - Eun Jeong Jang
- Department of Surgery, Dong-A University College of Medicine, Busan, Republic of Korea
| | - Sung Hwa Kang
- Department of Surgery, Dong-A University College of Medicine, Busan, Republic of Korea
| | - Young Hoon Roh
- Department of Surgery, Dong-A University College of Medicine, Busan, Republic of Korea
| | - Jin Sook Jeong
- Department of Pathology, Dong-A University College of Medicine, Busan, Republic of Korea
| | - Song-Hee Han
- Department of Pathology, Dong-A University College of Medicine, Busan, Republic of Korea
- Correspondence: Song-Hee Han, Department of Pathology, Dong-A University College of Medicine, 26, Daesingongwon-ro, Seo-gu, Busan, 49201, Republic of Korea, Tel +82-51-240-2863, Fax +82-51-240-7396, Email
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12
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Park J, Kumar S, Han SH, Singh VK, Nam SH, Lee Y. Two-Step Partial Least Squares-Discriminant Analysis Modeling for Accurate Classification of Edible Sea Salt Products Using Laser-Induced Breakdown Spectroscopy. Appl Spectrosc 2022; 76:1042-1050. [PMID: 35311386 DOI: 10.1177/00037028221091581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Laser-induced breakdown spectroscopy (LIBS) has been widely applied to material classification in various fields, and partial least squares-discriminant analysis (PLS-DA) is one of the frequently used classical multivariate statistics to construct classification models based on the LIBS spectra. However, classification accuracy of the PLS-DA model is sensitive to the number of classes and their similarities. Considering this characteristic of PLS-DA, we suggest a two-step PLS-DA modeling approach to improve the classification accuracy. This strategy was demonstrated for a six-class problem in which six commercial edible sea salts produced in Japan, South Korea, and France are classified using their LIBS spectra. At the first step, test spectra were sorted into four classes and one extended class, composed of the two other most confusing classes, and then the test spectra in the extended class were further classified into each of the two constituent classes which were modeled separately from the other four classes. This two-step classification has been found to remarkably improve the PLS-DA classification accuracy by maximizing the difference between the confusing classes in the second-step modeling.
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Affiliation(s)
- Jeong Park
- Department of Chemistry, 34991Mokpo National University, Muan-gun, Korea
| | - Sandeep Kumar
- Spectrochemical Analysis Center for Organic and Inorganic Materials and Natural Products, 34991Mokpo National University, Muan-gun, Korea
| | - Song-Hee Han
- Division of Navigation Science, 34990Mokpo National Maritime University, Mokpo, Korea
| | - Vivek K Singh
- Department of Physics, University of Lucknow, Lucknow, India
| | - Sang-Ho Nam
- Department of Chemistry, 34991Mokpo National University, Muan-gun, Korea
- Spectrochemical Analysis Center for Organic and Inorganic Materials and Natural Products, 34991Mokpo National University, Muan-gun, Korea
| | - Yonghoon Lee
- Department of Chemistry, 34991Mokpo National University, Muan-gun, Korea
- Spectrochemical Analysis Center for Organic and Inorganic Materials and Natural Products, 34991Mokpo National University, Muan-gun, Korea
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13
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Kim HS, Lee SY, Han SH, Nam SH, Jo CK, Kim MJ. Retraction Notice: Intussusception and Jejunal Atresia Caused by an Ectopic Pancreas in a Newborn. Neonatal Med 2022. [DOI: 10.5385/nm.2022.29.1.55] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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14
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Kwon YM, Han SH, Sung KS, Song YJ. Cerebral Microangiopathy Mimicking a High-Grade Glioma in Old Age: A Case Report. Brain Tumor Res Treat 2022; 10:195-199. [PMID: 35929118 PMCID: PMC9353164 DOI: 10.14791/btrt.2022.0021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 06/28/2022] [Accepted: 07/01/2022] [Indexed: 11/20/2022] Open
Abstract
Cerebral microangiopathy (CM) has become a common disease related to improved neuroimaging modalities and an increased life expectancy. Intracerebral tumor-like mass lesions have rarely been reported in cases of cerebral amyloid angiopathy (CAA) in elderly patients. However, tumor-like mass lesions from CM without amyloid deposits have rarely been reported. These two angiopathies may have different pathogeneses and neuroimaging characteristics. Herein, we present the case of an 83-year-old man with CM mimicking a high-grade glioma. We described the possible pathogenesis and different neuroimaging features of CM compared to CAA.
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Affiliation(s)
- Young Min Kwon
- Department of Neurosurgery, Dong-A University Hospital, Dong-A University College of Medicine, Busan, Korea
| | - Song-Hee Han
- Department of Pathology, Dong-A University Hospital, Dong-A University College of Medicine, Busan, Korea
| | - Kyoung Su Sung
- Department of Neurosurgery, Dong-A University Hospital, Dong-A University College of Medicine, Busan, Korea
| | - Young Jin Song
- Department of Neurosurgery, Dong-A University Hospital, Dong-A University College of Medicine, Busan, Korea
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15
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Moon SJ, Han SH, Kwak YG, Kim MG. Stability of acetylsalicylic acid in human blood collected using volumetric absorptive microsampling (VAMS) under various drying conditions. Transl Clin Pharmacol 2022; 30:57-69. [PMID: 35419312 PMCID: PMC8979761 DOI: 10.12793/tcp.2022.30.e5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 01/25/2022] [Accepted: 02/09/2022] [Indexed: 11/19/2022] Open
Abstract
Acetylsalicylic acid (ASA) is one of the most commonly used medications in global market, with a risk of intoxication in certain patients. However, monitoring blood drug concentration often requires frequent hospital visits; hence there is an unmet need to increase patient-centricity by conducting blood sampling at home. Volumetric absorptive microsampling (VAMS) is a device that allows collection of homogenous and accurate volume of blood without venipuncture, and can be utilized by patients who are not in hospital settings; but because ASA is prone to hydrolysis and stabilizing reagents cannot be added to VAMS samples, a way to improve sample stability must be developed. The objective of this study was to identify the cause of instability with ASA samples collected by VAMS, and to evaluate ways to improve sample stability. A liquid chromatography with tandem mass spectrometry (LC-MS/MS) was used for analysis of ASA concentration in whole blood. Samples collected with VAMS were kept under different drying conditions (desiccator, pressurized, nitrogen gas and household vacuum sealer) and were compared to the control samples collected by conventional venous sampling. The recovery of ASA was about 31% of the control when VAMS sample was dried at room temperature, whereas VAMS samples under humidity controlled conditions showed more than 85% of recovery. Our results suggest that adequate level of humidity control was critical to ensure sample stability of ASA, and this humidity control could also be achieved at home using household vacuum sealer, thus enabling patient-centric clinical trials to be conducted.
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Affiliation(s)
- Seol Ju Moon
- Center for Clinical Pharmacology and Biomedical Research Institute, Jeonbuk National University Hospital, Jeonju 54907, Korea
| | - Song-Hee Han
- Center for Clinical Pharmacology and Biomedical Research Institute, Jeonbuk National University Hospital, Jeonju 54907, Korea
| | - Yong-Geun Kwak
- Department of Pharmacology, School of Medicine, Jeonbuk National University, Jeonju 54907, Korea
- Research Institute of Clinical Medicine, Jeonbuk National University, Jeonju 54907, Korea
| | - Min-Gul Kim
- Center for Clinical Pharmacology and Biomedical Research Institute, Jeonbuk National University Hospital, Jeonju 54907, Korea
- Department of Pharmacology, School of Medicine, Jeonbuk National University, Jeonju 54907, Korea
- Research Institute of Clinical Medicine, Jeonbuk National University, Jeonju 54907, Korea
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Rhyou HI, Han SH, Nam YH. Successful induction treatment of bullous pemphigoid using reslizumab: a case report. Allergy Asthma Clin Immunol 2021; 17:117. [PMID: 34784964 PMCID: PMC8596938 DOI: 10.1186/s13223-021-00619-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 10/21/2021] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Bullous pemphigoid (BP) is a potentially life-threatening autoimmune blistering disease which is characterized by autoantibodies against hemidesmosomal proteins of the skin and mucous membranes. In recent years, the role of eosinophil and immunoglobulin E autoantibodies have been further elucidated in BP, and have been considered potential therapeutic targets.
Case presentations
A 67-year-old male presented with erythematous bullous eruption. The skin eruption was located on whole body, and suggested BP. Peripheral blood eosinophil count and total immunoglobulin E markedly elevated in initial laboratory findings. Topical and systemic steroid (methylprednisolone 2 mg/kg/day) treatment was started, and his skin symptoms worsened repeatedly, whenever systemic steroid were reduced. On admission day 29, reslizumab (anti-interleukin-5) 3.5 mg/kg was administered intravenously to the patients. The bullous skin lesion began to improve rapidly, and methylprednisolone (8 mg/day) was reduced without any worsening of symptoms during two doses of reslizumab.
Conclusions
We report a case of successful treatment response to reslizumab administration in a patient with BP. Further studies are needed to confirm the role of anti-interleukin-5 as a treatment for BP in the future.
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Jiao WY, Hu R, Han SH, Luo YF, Yuan HM, Li MK, Liu HJ. Surprisingly good thermoelectric performance of monolayer C 3N. Nanotechnology 2021; 33:045401. [PMID: 34653997 DOI: 10.1088/1361-6528/ac302c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Accepted: 10/15/2021] [Indexed: 06/13/2023]
Abstract
The rapid emergence of graphene has attracted numerous efforts to explore other two-dimensional materials. Here, we combine first-principles calculations and Boltzmann theory to investigate the structural, electronic, and thermoelectric transport properties of monolayer C3N, which exhibits a honeycomb structure very similar to graphene. It is found that the system is both dynamically and thermally stable even at high temperature. Unlike graphene, the monolayer has an indirect band gap of 0.38 eV and much lower lattice thermal conductivity. Moreover, the system exhibits obviously larger electrical conductivity and Seebeck coefficients for the hole carriers. Consequently, theZTvalue ofp-type C3N can reach 1.4 at 1200 K when a constant relaxation time is predicted by the simple deformation potential theory. However, such a largerZTis reduced to 0.6 if we fully consider the electron-phonon coupling. Even so, the thermoelectric performance of monolayer C3N is still significantly enhanced compared with that of graphene, and is surprisingly good for low-dimensional thermoelectric materials consisting of very light elements.
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Affiliation(s)
- W Y Jiao
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, People's Republic of China
| | - R Hu
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, People's Republic of China
| | - S H Han
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, People's Republic of China
| | - Y F Luo
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, People's Republic of China
| | - H M Yuan
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, People's Republic of China
| | - M K Li
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, People's Republic of China
| | - H J Liu
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, People's Republic of China
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Ju MH, Byun KD, Park EH, Lee JH, Han SH. Association of Galectin 9 Expression with Immune Cell Infiltration, Programmed Cell Death Ligand-1 Expression, and Patient's Clinical Outcome in Triple-Negative Breast Cancer. Biomedicines 2021; 9:biomedicines9101383. [PMID: 34680500 PMCID: PMC8533056 DOI: 10.3390/biomedicines9101383] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 09/28/2021] [Accepted: 09/29/2021] [Indexed: 01/03/2023] Open
Abstract
Galectin-9 (Gal-9) is an immune checkpoint protein that facilitates T cell exhaustion and modulates the tumor-associated microenvironment, and could be a potential target for immune checkpoint inhibition. This study was conducted to assess Gal-9 expression in triple-negative breast cancer (TNBC) and evaluate its association with programmed cell death ligand 1 (PD-L1) expression and immune cell infiltration in tumors and the clinical outcome of patients. Overall, 109 patients with TNBC were included. Gal-9 expression was assessed its relationships with tumor clinicopathologic characteristics, tumor-infiltrating lymphocyte (TIL) levels, PD-L1+ immune cells, and tumor cells by tissue microarray and immunohistochemistry. Low Gal-9 expression was statistically correlated with higher tumor stage (p = 0.031) and presence of lymphovascular invasion (p = 0.008). High Gal-9 expression was associated with a high level of stromal TILs (sTIL; p = 0.011) and positive PD-L1 expression on tumor cells (p = 0.004). In survival analyses, low Gal-9 expression was associated with significantly poor OS (p = 0.013) in patients with TNBC with PD-L1 negativity in tumor cells. Our findings suggest that increased Gal-9 expression is associated with changes in the antitumor microenvironment, such as increased immune cell infiltration and antimetastatic changes. This study emphasizes the predictive value and promising clinical applications of Gal-9 in TNBC.
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Affiliation(s)
- Mi-Ha Ju
- Department of Pathology, Dong-A University College of Medicine, Busan 49201, Korea;
| | - Kyung-Do Byun
- Department of Surgery, Dong-A University Hospital, Dong-A University College of Medicine, Busan 49201, Korea; (K.-D.B.); (E.-H.P.)
| | - Eun-Hwa Park
- Department of Surgery, Dong-A University Hospital, Dong-A University College of Medicine, Busan 49201, Korea; (K.-D.B.); (E.-H.P.)
| | - Jin-Hwa Lee
- Department of Radiology, Dong-A University Hospital, Dong-A University College of Medicine, Busan 49201, Korea;
| | - Song-Hee Han
- Department of Pathology, Dong-A University College of Medicine, Busan 49201, Korea;
- Correspondence: ; Tel.: +82-51-240-5353
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Gu GZ, Wu H, Yu SF, Zhou WH, Li FR, Shao JZ, Xue HC, Han SH, Guo JS. [Effect of occupational stress on depression in gas field workers]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2021; 39:574-577. [PMID: 34488263 DOI: 10.3760/cma.j.cn121094-20201009-00560] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Objective: To explore the occurrence level of depressive symptoms and it's influencing factors among gas field workers. Methods: In October 2018, a cross-sectional study was conducted in 1726 gas field workers from a gas field by using cluster sampling method. Questionaire was used to evaluate the individual factors, depressive symptoms, occupational stress factors and stress regulatory factors. The correlation between depressive symptoms and occupational stress was analyzed. Multivariate logistic regression was used to analyze the influencing factors of depressive symptoms. Results: The depressive symptoms score of gas field workers was 12.00 (7.00, 19.00) point. Correlation analysis revealed that depressive symptoms score was positively related to sleep disorders (r=0.598) , effort (r=0.186) , daily tension (r=0.478) , negative affectivity (r=0.565) , social support (r=0.446) and monotony of work (r=0.484) (P<0.01) . And it was negatively related to reward (r=-0.386) , work stability (r=-0.294) , promotion opportunities (r=-0.258) , positive affectivity (r= -0.310) , self-efficacy (r=-0.312) , contral strategy (r=-0.268) , support strategy (r=-0.209) and job satisfaction (r=-0.398) (P<0.01) . Multivariate logistic regression analysis revealed that sleep disorder, high negative affectivity, low support from colleagues, low support from family, high monotony of work and high daily tension were the risk factors for depressive symptoms of gas field worker (OR=3.423, 95%CI: 2.644-4.397; OR=2.847, 95%CI: 2.200-3.683; OR=1.646, 95%CI: 1.215-2.116; OR=1.496, 95%CI: 1.164-1.923; OR=1.578, 95%CI: 1.227-2.303; OR=1.903, 95%CI: 1.480-2.440; P<0.01) . High work stability, high self-efficacy and high job satisfaction were protective factors for depressive symptoms of gas field workers (OR=0.752, 95%CI: 0.591-0.958; OR=0.590, 95%CI: 0.465-0.749; OR=0.718, 95%CI: 0.516-0.999; P<0.05) . Conclusion: Occupational stress factors have a great influence on the depressive symptoms of gas field workers. Increased work stability, self-efficacy and job satisfaction could reduce the risk of depressive symptoms.
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Affiliation(s)
- G Z Gu
- Henan Provincial Institute for Occupational Health, Zhengzhou 450052, China
| | - H Wu
- Henan Provincial Institute for Occupational Health, Zhengzhou 450052, China
| | - S F Yu
- Henan Medical Vocational School, Zhengzhou 451191, China
| | - W H Zhou
- Henan Provincial Institute for Occupational Health, Zhengzhou 450052, China
| | - F R Li
- Zhongyuan Oilfield Centers for Disease Control and Prevention, Puyang 457006, China
| | - J Z Shao
- China Petroleum & Chemical Co., Ltd. of Zhongyuan Oilfield Branch, Dazhou 636158, China
| | - H C Xue
- Zhongyuan Oilfield Centers for Disease Control and Prevention, Puyang 457006, China
| | - S H Han
- Zhongyuan Oilfield Centers for Disease Control and Prevention, Puyang 457006, China
| | - J S Guo
- Zhongyuan Oilfield Centers for Disease Control and Prevention, Puyang 457006, China
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Jung NY, Heo JW, Han SH, Bae WY. A Case of Schwannoma in Subfrontal Area and Nasal Cavity. J Rhinol 2021. [DOI: 10.18787/jr.2021.00354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Schwannoma is a benign solitary neoplasm emerging from the Schwann cells of the peripheral, cranial and autonomic nerves. Approximately 25 to 45% of schwannomas occur in the head and neck region. However, schwannoma in the subfrontal area, nasal cavity or paranasal sinus is very rare and accounts for only 4% of these neoplasms. We experienced a case of schwannoma in the subfrontal area and left nasal cavity in a 74-year-old man who complained of recurrent rhinorrhea. We report this unusual case of schwannoma with a review of the literature.
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21
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Yin ZP, Sheng CY, Hu R, Han SH, Fan DD, Cao GH, Liu HJ. Strong interlayer coupling in two-dimensional PbSe with high thermoelectric performance. J Phys Condens Matter 2021; 33:325701. [PMID: 33232949 DOI: 10.1088/1361-648x/abcd7d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 11/24/2020] [Indexed: 06/11/2023]
Abstract
It was generally believed that weak van der Waals interactions exist between neighboring layers in the two-dimensional group-IV chalcogenides. Using PbSe as a prototypal example, we find additional strong coupling between the Pb-Pb layers, as evidenced by detailed analysis of the differential charge density plot. The coupling is covalent-like and can be fine-tuned to obviously reduce the phonon thermal conductivity but slightly change the electronic transport of PbSe layer. As a consequence, a maximumZTvalue of 2.5 can be realized at 900 K for thep-type system. Our work also offers an effective and feasible design strategy to enhance the thermoelectric performance of similar layered structures.
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Affiliation(s)
- Z P Yin
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, People's Republic of China
| | - C Y Sheng
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, People's Republic of China
| | - R Hu
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, People's Republic of China
| | - S H Han
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, People's Republic of China
| | - D D Fan
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, People's Republic of China
| | - G H Cao
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, People's Republic of China
| | - H J Liu
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, People's Republic of China
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Park Y, Park J, Ahn JW, Sim JM, Kang SJ, Kim S, Hwang SJ, Han SH, Sung KS, Lim J. Transcriptomic Landscape of Lower Grade Glioma Based on Age-Related Non-Silent Somatic Mutations. ACTA ACUST UNITED AC 2021; 28:2281-2295. [PMID: 34205437 PMCID: PMC8293196 DOI: 10.3390/curroncol28030210] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 06/06/2021] [Accepted: 06/16/2021] [Indexed: 12/13/2022]
Abstract
Glioma accounts for 80% of all malignant brain tumours and is the most common adult primary brain tumour. Age is an important factor affecting the development of cancer, as somatic mutations accumulate with age. Here, we aimed to analyse the significance of age-dependent non-silent somatic mutations in glioma prognosis. Histological tumour grade depends on age at diagnosis in patients with IDH1, TP53, ATRX, and EGFR mutations. Age of patients with wild-type IDH1 and EGFR increased with increase in tumour grade, while the age of patients with IDH1 or EGFR mutation remained constant. However, the age of patients with EGFR mutation was higher than that of patients with IDH1 mutation. The hierarchical clustering of patients was dominantly separated by IDH1 and EGFR mutations. Furthermore, patients with IDH1 mutation were dominantly separated by TP53 and ATRX double mutation and its double wild-type counterpart. The age of patients with ATRX and TP53 mutation was lower than that of patients with wild-type ATRX and TP53. Patients with the double mutation showed poorer prognosis than those with the double wild type genotype. Unlike IDH1 mutant, IDH1 wild-type showed upregulation of expression of epithelial mesenchymal transition associated genes.
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Affiliation(s)
- YoungJoon Park
- Institute Department of Biomedical Science, College of Life Science, CHA University, Seongnam 13488, Korea; (Y.P.); (J.P.); (J.W.A.); (S.J.K.)
- Department of Neurosurgery, Bundang CHA Medical Center, CHA University College of Medicine, Seongnam 13496, Korea; (J.M.S.); (S.K.); (S.J.H.)
| | - JeongMan Park
- Institute Department of Biomedical Science, College of Life Science, CHA University, Seongnam 13488, Korea; (Y.P.); (J.P.); (J.W.A.); (S.J.K.)
- Department of Neurosurgery, Bundang CHA Medical Center, CHA University College of Medicine, Seongnam 13496, Korea; (J.M.S.); (S.K.); (S.J.H.)
| | - Ju Won Ahn
- Institute Department of Biomedical Science, College of Life Science, CHA University, Seongnam 13488, Korea; (Y.P.); (J.P.); (J.W.A.); (S.J.K.)
- Department of Neurosurgery, Bundang CHA Medical Center, CHA University College of Medicine, Seongnam 13496, Korea; (J.M.S.); (S.K.); (S.J.H.)
| | - Jeong Min Sim
- Department of Neurosurgery, Bundang CHA Medical Center, CHA University College of Medicine, Seongnam 13496, Korea; (J.M.S.); (S.K.); (S.J.H.)
| | - Su Jung Kang
- Institute Department of Biomedical Science, College of Life Science, CHA University, Seongnam 13488, Korea; (Y.P.); (J.P.); (J.W.A.); (S.J.K.)
- Department of Neurosurgery, Bundang CHA Medical Center, CHA University College of Medicine, Seongnam 13496, Korea; (J.M.S.); (S.K.); (S.J.H.)
| | - Suwan Kim
- Department of Neurosurgery, Bundang CHA Medical Center, CHA University College of Medicine, Seongnam 13496, Korea; (J.M.S.); (S.K.); (S.J.H.)
| | - So Jung Hwang
- Department of Neurosurgery, Bundang CHA Medical Center, CHA University College of Medicine, Seongnam 13496, Korea; (J.M.S.); (S.K.); (S.J.H.)
- Global Research Supporting Center, Bundang CHA Medical Center, CHA University College of Medicine, Seongnam 13496, Korea
| | - Song-Hee Han
- Department of Pathology, Dong-A University College of Medicine, Dong-A University, Busan 49201, Korea;
| | - Kyoung Su Sung
- Department of Neurosurgery, Dong-A University Hospital, Dong-A University College of Medicine, Busan 49201, Korea
- Correspondence: or (K.S.S.); or (J.L.); Tel.: +82-51-240-5241 (K.S.S.); +82-31-780-5688 (J.L.)
| | - Jaejoon Lim
- Department of Neurosurgery, Bundang CHA Medical Center, CHA University College of Medicine, Seongnam 13496, Korea; (J.M.S.); (S.K.); (S.J.H.)
- Correspondence: or (K.S.S.); or (J.L.); Tel.: +82-51-240-5241 (K.S.S.); +82-31-780-5688 (J.L.)
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Lim K, Park JS, Yoon BA, Han SH. Necrotizing myopathy presenting as congestive heart failure and life-threatening ventricular arrhythmias: a case report. Eur Heart J Case Rep 2021; 5:ytab075. [PMID: 34142007 PMCID: PMC8207167 DOI: 10.1093/ehjcr/ytab075] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 10/22/2021] [Accepted: 02/10/2021] [Indexed: 11/14/2022]
Abstract
Background Necrotizing autoimmune myopathy is a rare subtype of idiopathic inflammatory myopathy; however, it can be associated with fatal cardiac manifestations. Case summary A 58-year-old female patient was referred for congestive heart failure with dysrhythmia. Electrocardiograms showed ventricular arrhythmias of various QRS complex morphologies and coupling intervals with beat-to-beat differences. Despite optimal medical therapy for heart failure, the patient was admitted for the progression of dyspnoea and generalized motor weakness. The burden of non-sustained ventricular tachycardia gradually increased, and ventricular fibrillation eventually occurred. In view of a differential diagnosis of an inflammatory myocardial diseases such as sarcoidosis, a cardiac biopsy was performed. However, pathologic examinations revealed only necrotic muscle fibres without granuloma. Further examinations revealed proximal dominant motor weakness, an elevated serum creatinine-phosphokinase level, myogenic potentials on needle electromyography, and biceps muscle biopsy findings that were compatible with necrotizing autoimmune myopathy. High-dose steroid therapy improved the patient's motor weakness, including her respiratory impairment, and successfully suppressed ventricular arrhythmias. Discussion This case suggests that intensive immunosuppressive therapy with high-dose steroid could be useful in the necrotizing autoimmune myopathy manifested as congestive heart failure and life-threatening ventricular arrhythmias.
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Affiliation(s)
- Kyunghee Lim
- Department of Cardiology, Dong-A University Hospital, 32 Daesingongwon-ro, Seo-gu, Busan 49202, Korea
| | - Jong Sung Park
- Department of Cardiology, Dong-A University Hospital, 32 Daesingongwon-ro, Seo-gu, Busan 49202, Korea
| | - Byeol-A Yoon
- Department of Neurology, Dong-A University Hospital, 32 Daesingongwon-ro, Seo-gu, Busan 49202, Korea
| | - Song-Hee Han
- Department of Pathology, Dong-A University Hospital, 32 Daesingongwon-ro, Seo-gu, Busan 49202, Korea
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Roh MS, Han SH. Metastatic gastric cancer of the testis diagnosed through urine cytology. J Pathol Transl Med 2021; 55:303-305. [PMID: 34058798 PMCID: PMC8353135 DOI: 10.4132/jptm.2021.04.19] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 04/19/2021] [Indexed: 11/17/2022] Open
Affiliation(s)
- Mee Sook Roh
- Department of Pathology, Dong-A University College of Medicine, Busan, Korea
| | - Song-Hee Han
- Department of Pathology, Dong-A University College of Medicine, Busan, Korea
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Kim HS, Lee SY, Han SH, Nam SH, Jo CK, Kim MJ. Intussusception and Jejunal Atresia Caused by an Ectopic Pancreas in a Newborn. Neonatal Med 2021. [DOI: 10.5385/nm.2021.28.2.72] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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Nam SH, Han SH. Jejunal atresia due to heterotopic pancreatic intussusception. Journal of Pediatric Surgery Case Reports 2021. [DOI: 10.1016/j.epsc.2021.101805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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Gu GZ, Wu H, Yu SF, Zhou WH, Li FR, Shao JZ, Xue HC, Han SH, Guo JS. [Correlation between social support and occupational stress among gas production workers in the field]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2020; 38:819-822. [PMID: 33287473 DOI: 10.3760/cma.j.cn121094-20190927-00411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the level of social support and its correlation with occupational stress among gas production workers in the field. Methods: In October 2018, the cluster sampling method was used to perform a cross-sectional survey for 1726 gas production workers in the field, and related data of these workers were collected, including age, education level, marital status, level of social support, and related factors for occupational stress. A Spearman's rank correlation analysis was used to investigate the correlation between social support and occupational stress, and the levels of occupational stress-related factors were compared between the groups with different social support scores. Results: The gas production workers in the field had a median (25th percentile, 75th percentile) social support score of 24.00 (19.00, 28.00) , and there was a significant difference in social support score between the workers with different posts or work shifts (P<0.01) . Social support score was positively correlated with effort, daily stress, negative emotion, and job routinization (P<0.05) and was negatively correlated with job satisfaction, reward, working stability, and promotion opportunity (P<0.05) . The group with a high social support score had significantly higher scores of effort, job routinization, sleep disorders, and daily stress than the other two groups (P<0.01) , and the group with a low social support score had significantly higher scores of reward, self-efficacy, positive affection, and job satisfaction than the other two groups (P<0.01) . Conclusion: High-level social support plays an important role in alleviating occupational stress and protecting mental health among gas production workers in the field.
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Affiliation(s)
- G Z Gu
- Henan Provincial Institute for Occupational Health, Zhengzhou 450052, China
| | - H Wu
- Henan Provincial Institute for Occupational Health, Zhengzhou 450052, China
| | - S F Yu
- Henan Medical College, Zhengzhou 451191, China
| | - W H Zhou
- Henan Provincial Institute for Occupational Health, Zhengzhou 450052, China
| | - F R Li
- Zhongyuan Oilfield Centers for Disease Control and Prevention, Puyang 457006, China
| | - J Z Shao
- China Petroleum & Chemical Co., Ltd. of Zhongyuan Oilfield Branch Company, Dazhou 636158, China
| | - H C Xue
- Zhongyuan Oilfield Centers for Disease Control and Prevention, Puyang 457006, China
| | - S H Han
- Zhongyuan Oilfield Centers for Disease Control and Prevention, Puyang 457006, China
| | - J S Guo
- Zhongyuan Oilfield Centers for Disease Control and Prevention, Puyang 457006, China
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Hyun YY, Lee KB, Han SH, Choi KH, Park HC, Oh YK, Park SK, Oh KH, Ahn C. Risk factors and renal outcomes of low bone mineral density in patients with non-dialysis chronic kidney disease. Osteoporos Int 2020; 31:2373-2382. [PMID: 32642852 DOI: 10.1007/s00198-020-05531-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 06/30/2020] [Indexed: 12/24/2022]
Abstract
UNLABELLED Bone disorder is a common complication of chronic kidney disease (CKD). The clinical usefulness of bone mineral density (BMD) in CKD is not well known. Our study shows that low BMD is associated with physical activity and dietary Na/K intake ratio and can predict poor renal outcome in non-dialysis CKD. PURPOSE Despite evidence of a link between bone mineral disorders and chronic kidney disease (CKD), the clinical implications of bone mineral density (BMD) in CKD are not well established. We investigated risk factors and renal outcomes of low BMD in CKD. METHODS We analyzed data from the KNOW-CKD. BMD measured by dual-energy x-ray absorptiometry was classified by T score: normal (T score ≥ - 1.0), osteopenia (- 1.0 > T score > - 2.5), and osteoporosis (T score ≤ - 2.5) of the lumbar spine, hip, or femoral neck. Logistic regression analysis to assess risk factors of low BMD (T score < - 1.0) and Cox proportional hazards models to estimate risk of incident end-stage renal disease (ESRD). RESULTS Low BMD was prevalent (osteopenia 33%; osteoporosis 8%) in 2128 adults with CKD (age 54 ± 12 years; male 61%). Over a median follow-up of 4.3 years, there were 521 cases of incident ESRD. Lower BMD was associated with female sex, older age, low eGFR, low BMI, and lifestyle factors of physical activity (odds ratio (OR) = 0.62, 95% confidence interval (0.49-0.77)) and spot urine Na/K ratio (1.07 (1.00-1.15)). In adjusted Cox models, low BMD was associated with increased incident ESRD (hazard ratio (HR) = 1.14 (0.92-1.41) for osteopenia; 1.43 (1.01-2.04) for osteoporosis, P for trend < 0.05) compared with the reference of normal BMD. The association between low BMD and ESRD was similar according to T score discordance classification. CONCLUSIONS Low BMD was associated with modifiable lifestyle factors including low physical activity and high dietary Na/K intake ratio. The presence of low BMD is associated with poor renal outcomes in non-dialysis CKD.
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Affiliation(s)
- Y Y Hyun
- Division of Nephrology, Department of Internal Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, 29 Saemunan-ro, Jongno-gu, Seoul, 03181, Republic of Korea
| | - K-B Lee
- Division of Nephrology, Department of Internal Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, 29 Saemunan-ro, Jongno-gu, Seoul, 03181, Republic of Korea.
| | - S H Han
- Department of Internal Medicine, College of Medicine, Institute of Kidney Disease Research, Yonsei University, Seoul, South Korea
| | - K H Choi
- Department of Internal Medicine, College of Medicine, Institute of Kidney Disease Research, Yonsei University, Seoul, South Korea
| | - H C Park
- Department of Internal Medicine, Kangnam Sacred Heart Hospital, Hallym University Medical Center, Seoul, South Korea
| | - Y K Oh
- Department of Internal Medicine, Seoul National University Boramae Hospital, Seoul, South Korea
| | - S K Park
- Department of Preventive Medicine, Seoul National University College of Medicine, Seoul, South Korea
| | - K-H Oh
- Department of Internal Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, South Korea
| | - C Ahn
- Department of Internal Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, South Korea
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Han SH, Zhou ZZ, Sheng CY, Liu JH, Wang L, Yuan HM, Liu HJ. High thermoelectric performance of half-Heusler compound BiBaK with intrinsically low lattice thermal conductivity. J Phys Condens Matter 2020; 32:425704. [PMID: 32624508 DOI: 10.1088/1361-648x/aba2e7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Half-Heusler compounds usually exhibit relatively higher lattice thermal conductivity that is undesirable for thermoelectric applications. Here we demonstrate by first-principles calculations and Boltzmann transport theory that the BiBaK system is an exception, which has rather low thermal conductivity as evidenced by very small phonon group velocity and relaxation time. Detailed analysis indicates that the heavy Bi and Ba atoms form a cage-like structure, inside which the light K atom rattles with larger atomic displacement parameters. In combination with its good electronic transport properties, the BiBaK shows a maximum n-type ZT value of 1.9 at 900 K, which outperforms most half-Heusler thermoelectric materials.
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Affiliation(s)
- S H Han
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, People's Republic of China
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Kim H, Ngo VT, Kumar S, Bae Lee W, Park J, Han SH, Nam SH, Ham KS, Lee Y. Laser-induced breakdown spectroscopy for rapid accurate analysis of Mg, Ca, and K in edible sea salts. Appl Opt 2019; 58:9940-9948. [PMID: 31873640 DOI: 10.1364/ao.58.009940] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Accepted: 11/25/2019] [Indexed: 06/10/2023]
Abstract
A compact laser-induced breakdown spectroscopy (LIBS) instrument and a simple sample preparation method were developed for rapid on-site analysis of Mg, Ca, and K in edible sea salt products. The LIBS instrument was assembled using a small diode-pumped solid-state laser and a handheld spectrometer. Aqueous solutions of salts were prepared and sampled by using pieces of filter papers. The dried filter paper was attached on the flat surface of a silicon wafer and then analyzed by LIBS. Calibration curves were obtained using binary mixtures of ${\rm NaCl} {-} {{\rm MgSO}_4}$NaCl-MgSO4, ${\rm NaCl} {-} {{\rm CaCl}_2}$NaCl-CaCl2, and NaCl-KCl and used to estimate the concentrations of Mg, Ca, and K in 13 edible sea salt products. Matrix effects on the results from LIBS were identified in comparison with those from inductively coupled plasma optical emission spectroscopy. This indicates that the matrix of sea salt samples is significantly different from that of the binary mixture standards. The sea salts with known concentrations of Mg, Ca, and K were employed to match the matrices of samples and standards. This improved analysis accuracy remarkably. Furthermore, an alternative indirect method for estimating the concentration of K was suggested on the basis of the strong positive correlations observed between the concentrations of Mg and K in the sea salt samples.
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Kim H, Jeon Y, Lee WB, Nam SH, Han SH, Ham KS, Singh VK, Lee Y. Feasibility of Quantitative Analysis of Magnesium and Calcium in Edible Salts Using a Simple Laser-Induced Breakdown Spectroscopy Device. Appl Spectrosc 2019; 73:1172-1182. [PMID: 31315431 DOI: 10.1177/0003702819861552] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Feasibility of a simple laser-induced breakdown spectroscopy (LIBS) device has been investigated for the analysis of Mg and Ca in edible salts. The LIBS spectrometer was assembled with a compact low-power diode-pumped solid-state laser (DPSSL) and a non-gated low-resolution handheld spectrometer. A simple sampling process was employed for on-site application. A piece of filter paper was dipped in the aqueous solution of a sample salt and dried for analysis using LIBS. Maintaining the sample surface height at the optimum position was critical to generate plasmas persistently due to the low pulse energy of the DPSSL. The varying height of the filter paper surface was monitored and compensated, while the sample stage was translated to collect spectra from different positions. The variation of line intensities of Mg and Ca could be attributed to the inhomogeneous distribution of dry residues. To correct this, the peak that consists of the Na(I) and C(II) lines at 568 nm was employed as a reference signal for intensity normalization of the analyte Mg(II) and Ca(II) lines. For edible salt products, the normalized Mg(II) and Ca(II) line intensities could be well correlated with the concentrations of Mg and Ca determined using inductively coupled plasma optical emission spectroscopy. Our results indicate that a simple LIBS device in combination with the simple sampling method is promising as an on-site salt quality assessment methodology.
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Affiliation(s)
- Hyang Kim
- Department of Chemistry, Mokpo National University, Jeonnam, Republic of Korea
| | - Yoonji Jeon
- Department of Chemistry, Mokpo National University, Jeonnam, Republic of Korea
| | - Won Bae Lee
- Department of Chemistry, Mokpo National University, Jeonnam, Republic of Korea
| | - Sang-Ho Nam
- Department of Chemistry, Mokpo National University, Jeonnam, Republic of Korea
| | - Song-Hee Han
- Division of Navigation Science, Mokpo National Maritime University, Mokpo, Republic of Korea
| | - Kyung-Sik Ham
- Department of Food Engineering, Mokpo National University, Jeonnam, Republic of Korea
| | - Vivek K Singh
- School of Physics, Shri Mata Vaishno Devi University, Katra, India
| | - Yonghoon Lee
- Department of Chemistry, Mokpo National University, Jeonnam, Republic of Korea
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Choe HJ, Kim JW, Han SH, Kim KJ, Kim JM, Suh KJ, Kim JW, Lee KW, Lee HS. Abstract 3750: Conversion surgery in unresectable advanced gastric cancer and cancer dormancy as a prognostic marker. Cancer Res 2019. [DOI: 10.1158/1538-7445.am2019-3750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: While additional gastrectomy has not shown superiority compared to conventional systemic therapy in unresectable gastric cancer in REGATTA trial, there have been several subsequent attempts to find a role for conversion surgery with a curative intent in selected patients. The aim of this study was to analyze the conversion surgery data and to see if there was a role of cancer dormancy markers to select patients for conversion surgery.
Patients and Methods: From the pathology database at Seoul National University Bundang Hospital, we identified 49 patients treated with chemotherapy followed by gastrectomy in initially unresectable gastric cancer from January 2006 to August 2016. Of these, 26 patients were analyzed to explore the role of conversion surgery with a curative intent. As cancer dormancy markers, NR2F1, nanog, mig6, and pERK were evaluated using immunohistochemistry staining.
Results: Twenty-six (53%) from a total of forty-nine patients received conversion surgery. The median age was 58 years (range, 39-78) and the duration of prior chemotherapy before conversion surgery was 5.1 months (range, 3.1-13.9). Category 2 with para-aortic lymph node involvement was the most prevalent disease status (57.5%). At the time of conversion surgery, complete response, partial response, and stable disease status had been established with chemotherapy in 2, 15, and 3 patients, respectively. Of these, R0 resection was accomplished in twenty-two (85%) patients. Median overall survival (OS) in all patients that underwent conversion surgery, defined as the time from initiation of chemotherapy to death by any cause, was 36.1 months (95% CI, 29.6-51.4). In patients that underwent R0 resection, disease free survival (DFS) from conversion surgery and OS from initial chemotherapy was 15.1 months (95% CI, 13.9-43.8) and 37.8 months (95% CI, 31.7-57.1), respectively. Patients with a shorter duration of prior chemotherapy were associated with both longer OS and DFS from conversion surgery (p < 0.001, both). Less advanced pathologic stage at the time of conversion surgery was also associated with longer OS from conversion surgery (p=0.045). Regarding cancer dormancy markers from initial biopsy specimens, stronger expression (moderate to strong) of NR2F1, nanog, and mig6 showed a tendency for longer DFS after conversion surgery (p=0.018, p=0.834, p=0.344, respectively) and also longer OS after conversion surgery (p=0.027, p=0.225, p=0.359, respectively).
Conclusion: When advanced gastric cancer showed a favorable response after chemotherapy, a survival of over 3 years was observed in patients who received a curative conversion surgery, despite the initial unresectability. We may expect survival benefits from conversion surgery in certain subgroups, with better initial response to palliative chemotherapy and higher levels of specific cancer dormancy proteins in the tumor.
Citation Format: Hun Jee Choe, Jin Won Kim, Song-Hee Han, Kui-Jin Kim, Jeong-Min Kim, Koung Jin Suh, Ji-Won Kim, Keun-Wook Lee, Hye Seung Lee. Conversion surgery in unresectable advanced gastric cancer and cancer dormancy as a prognostic marker [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2019; 2019 Mar 29-Apr 3; Atlanta, GA. Philadelphia (PA): AACR; Cancer Res 2019;79(13 Suppl):Abstract nr 3750.
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Affiliation(s)
- Hun Jee Choe
- 1Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Jin Won Kim
- 1Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Song-Hee Han
- 1Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Kui-Jin Kim
- 1Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Jeong-Min Kim
- 2Chung-Ang University Hospital, Seoul, Republic of Korea
| | - Koung Jin Suh
- 1Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Ji-Won Kim
- 1Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Keun-Wook Lee
- 1Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Hye Seung Lee
- 1Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea
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Han SH, Kim JW, Kim M, Kim JH, Lee KW, Kim BH, Oh HK, Kim DW, Kang SB, Kim H, Shin E. Prognostic implication of ABC transporters and cancer stem cell markers in patients with stage III colon cancer receiving adjuvant FOLFOX-4 chemotherapy. Oncol Lett 2019; 17:5572-5580. [PMID: 31186779 PMCID: PMC6507487 DOI: 10.3892/ol.2019.10234] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Accepted: 02/20/2019] [Indexed: 01/15/2023] Open
Abstract
Cancer stem cell (CSC) and ATP-binding cassette (ABC) transporters are associated with treatment resistance and outcomes of patients with cancer. The present study investigated the prognostic implications of pre-therapeutic expression of ABC transporters and CSC markers in patients with colon cancer (CC) who received adjuvant 5-fluorouracil, leucovorin and oxaliplatin combination therapy (FOLFOX-4). The immunohistochemical expression of 3 ABC transporters, including ABC subfamily C member 2 (ABCC2), ABCC3 and ABC subfamily G member 2 (ABCG2), and 3 CSC markers, including sex determining region Y-box 2 (SOX2), leucine-rich repeat-containing G protein-coupled receptor 5 and aldehyde dehydrogenase 1, were determined in 164 CC tissues from patients with stage III CC, who underwent postoperative FOLFOX-4 chemotherapy. The association between the protein expression and patients' prognoses was statistically analyzed. ABCG2 was associated with favorable overall survival rate (OS; P=0.001), and ABCC2, ABCG2 and SOX2 were associated with increased disease-free survival rate (DFS; P=0.001, 0.002 and 0.013, respectively). In multivariate analyses, ABCG2 was an independent prognostic factor for OS [hazard ratio (HR)=2.877; P=0.046], and ABCC2 and SOX2 were independent prognostic factors for DFS (HR=2.831; P=0.014; HR=2.558, P=0.020, respectively). ABCC2, ABCG2 and SOX2 may be promising prognostic markers for patients with CC receiving FOLFOX-4 therapy.
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Affiliation(s)
- Song-Hee Han
- Department of Pathology, Dong-A University School of Medicine, Busan, South Gyeongsang 49201, Republic of Korea
| | - Jin Won Kim
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Gyeonggi 13620, Republic of Korea
| | - Milim Kim
- Department of Pathology, Seoul National University Bundang Hospital, Seongnam, Gyeonggi 13620, Republic of Korea
| | - Jee Hyun Kim
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Gyeonggi 13620, Republic of Korea
| | - Keun-Wook Lee
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Gyeonggi 13620, Republic of Korea
| | - Bo-Hyung Kim
- Department of Clinical Pharmacology and Therapeutics, Kyung Hee University College of Medicine and Hospital, Seoul 02447, Republic of Korea
| | - Heung-Kwon Oh
- Department of Surgery, Seoul National University Bundang Hospital, Seongnam, Gyeonggi 13620, Republic of Korea
| | - Duck-Woo Kim
- Department of Surgery, Seoul National University Bundang Hospital, Seongnam, Gyeonggi 13620, Republic of Korea
| | - Sung-Bum Kang
- Department of Surgery, Seoul National University Bundang Hospital, Seongnam, Gyeonggi 13620, Republic of Korea
| | - Hyunchul Kim
- Department of Pathology, Hallym University Dongtan Sacred Heart Hospital, Hwaseong, Gyeonggi 18450, Republic of Korea
| | - Eun Shin
- Department of Pathology, Seoul National University Bundang Hospital, Seongnam, Gyeonggi 13620, Republic of Korea.,Department of Pathology, Hallym University Dongtan Sacred Heart Hospital, Hwaseong, Gyeonggi 18450, Republic of Korea
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Lee KH, Han SH, Yong D, Paik HC, Lee JG, Kim MS, Joo DJ, Choi JS, Kim SI, Kim YS, Park MS, Kim SY, Yoon YN, Kang S, Jeong SJ, Choi JY, Song YG, Kim JM. Acquisition of Carbapenemase-Producing Enterobacteriaceae in Solid Organ Transplantation Recipients. Transplant Proc 2019; 50:3748-3755. [PMID: 30577266 DOI: 10.1016/j.transproceed.2018.01.058] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Accepted: 01/23/2018] [Indexed: 02/07/2023]
Abstract
BACKGROUND Carbapenemase-producing Enterobacteriaceae (CPE) can lead to life-threatening outcomes with rapid spread of the carbapenemase gene in solid organ transplantation (SOT) recipients because of limitations of available antibiotics. We examined the characteristics and importance of CPE acquisition in SOT recipients with large numbers of CPE isolates. METHODS Between November 2015 and October 2016, 584 CPE isolates were found in 37 recipients and verified by carbapenemase gene multiplex polymerase chain reaction (PCR). One hundred recipients with at least 2 negative results in carbapenemase PCR for stool surveillance and no CPE isolates in clinical samples were retrospectively included. RESULTS Most CPE isolates were Klebsiella pneumoniae carbapenemase (KPC)-producing K. pneumoniae (546, 93.5%). The most frequent transplantation organ was lung (43.3%), and the most common sample with CPE isolates other than stool was respiratory tract (22.6%). The median time between SOT and first CPE acquisition was 7 days. All-cause mortality was significantly higher in recipients with CPE than in those without CPE (24.3% vs 10.0%; P = .03). In multivariate regression analysis, stool colonization of vancomycin-resistant Enterococci and/or Clostridium difficile during 30 days before SOT (odds ratio [OR], 3.28; 95% CI, 1.24-8.68; P = .02), lung transplantation (OR, 4.50; 95% CI, 1.19-17.03; P = .03), and intensive care unit stay ≥2 weeks (OR, 6.21; 95% CI, 1.72-22.45; P = .005) were associated with acquisition of CPE. CONCLUSIONS Early posttransplantation CPE acquisition may affect the clinical outcome of SOT recipients. Careful screening for CPE during the early posttransplantation period would be meaningful in recipients with risk factors.
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Affiliation(s)
- K H Lee
- Division of Infectious Disease, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - S H Han
- Division of Infectious Disease, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea.
| | - D Yong
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - H C Paik
- Department of Thoracic and Cardiovascular Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - J G Lee
- Department of Thoracic and Cardiovascular Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - M S Kim
- Department of Transplantation Surgery and Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - D J Joo
- Department of Transplantation Surgery and Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - J S Choi
- Department of Transplantation Surgery and Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - S I Kim
- Department of Transplantation Surgery and Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Y S Kim
- Department of Transplantation Surgery and Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - M S Park
- Division of Pulmonology and Critical Care Medicine, Department of Internal Medicine, Institute of Chest Diseases, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - S Y Kim
- Division of Pulmonology and Critical Care Medicine, Department of Internal Medicine, Institute of Chest Diseases, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Y N Yoon
- Department of Cardiothoracic Surgery, Cardiovascular Center, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - S Kang
- Division of Cardiology, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - S J Jeong
- Division of Infectious Disease, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - J Y Choi
- Division of Infectious Disease, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Y G Song
- Division of Infectious Disease, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - J M Kim
- Division of Infectious Disease, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
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Sohn HM, Baik JS, Hwang JY, Kim SY, Han SH, Kim JH. Devising negative pressure within intercuff space reduces microaspiration. BMC Anesthesiol 2018; 18:181. [PMID: 30509183 PMCID: PMC6278018 DOI: 10.1186/s12871-018-0643-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2018] [Accepted: 11/20/2018] [Indexed: 02/07/2023] Open
Abstract
Background Microaspiration past the tracheal tube cuffs causes ventilator-associated pneumonia. The objective of the current study was to evaluate whether creating negative pressure between the tracheal double cuffs could block the fluid passage past the tracheal tube cuffs. Methods A new negative pressure system was devised between the double cuffs through a suction hole in the intercuff space. Blue-dyed water was instilled above the cuff at negative suction pressures of − 54, − 68, − 82, − 95, − 109, − 122, and − 136 cmH2O, and the volume leaked was measured in an underlying water trap after 10 min. Leakage tests were also performed during positive pressure ventilation, and using higher-viscosity materials. The actual negative pressures delivered at the hole of double cuffs were obtained by placing microcatheter tip between the intercuff space and the artificial trachea. Results No leakage occurred past the double cuff at − 136 cmH2O suction pressure at all tracheal tube cuff pressures. The volume leaked decreased significantly as suction pressure increased. When connected to a mechanical ventilator, no leakage was found at − 54 cmH2suction pressure. Volume of the higher-viscosity materials (dynamic viscosity of 63–108 cP <cP> and 370–430 cP) leaked was small compared to that of normal saline (0.9–1.1 cP). The pressures measured in the intercuff space corresponded to 3.8–5.9% of those applied. Conclusions A new prototype double cuff with negative pressure in the intercuff space completely prevented water leakage. The negative pressure transmitted to the tracheal inner wall was a small percentage of that applied.
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Affiliation(s)
- H M Sohn
- Department of Anesthesiology and Pain Medicine, Seoul National University Bundang Hospital, Gyeonggi-do, Republic of Korea
| | - J S Baik
- Department of Anesthesiology and Pain Medicine, Pusan National University Hospital, Busan, Republic of Korea
| | - J Y Hwang
- Department of Anesthesiology and Pain Medicine, SMG-SNU Boramae Medical Center, Seoul, Republic of Korea
| | - S Y Kim
- Department of Anesthesiology and Pain Medicine, Seoul National University Bundang Hospital, Gyeonggi-do, Republic of Korea
| | - S H Han
- Department of Anesthesiology and Pain Medicine, Seoul National University Bundang Hospital, Gyeonggi-do, Republic of Korea.,Department of Anesthesiology and Pain Medicine, Seoul National University Medical College, Seoul, Republic of Korea
| | - J H Kim
- Department of Anesthesiology and Pain Medicine, Seoul National University Bundang Hospital, Gyeonggi-do, Republic of Korea. .,Department of Anesthesiology and Pain Medicine, Seoul National University Medical College, Seoul, Republic of Korea.
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Shim JS, Han SH, Jha N, Hwang ST, Ahn W, Lee JY, Ryu JJ. Effect of Irradiance and Exposure Duration on Temperature and Degree of Conversion of Dual-Cure Resin Cement for Ceramic Restorations. Oper Dent 2018; 43:E280-E287. [PMID: 30106334 DOI: 10.2341/17-283-l] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
This study investigated the effects of irradiance and exposure duration on dual-cured resin cements irradiated through ceramic restorative materials. A single light-curing unit was calibrated to three different irradiances (500, 1000, and 1500 mW/cm2) and irradiated to three different attenuating materials (transparent acryl, lithium disilicate, zirconia) with 1-mm thicknesses for 20 or 60 seconds. The changes in irradiance and temperature were measured with a radiometer (or digital thermometer) under the attenuating materials. The degree of conversion (DC) of dual-cure resin cement after irradiation at different irradiances and exposure durations was measured with Fourier transform near infrared spectroscopy. Two-way analysis of variance revealed that irradiance ( p<0.001) and exposure duration ( p<0.001) significantly affected temperature and DC. All groups showed higher DCs with increased exposure times ( p<0.05), but there were no statistically significant differences between the groups irradiated with 1000 mW/cm2 and 1500 mW/cm2 ( p>0.05). Higher-intensity irradiances yielded higher temperatures ( p<0.05), but exposure time did not affect temperature when materials were irradiated at 500 mW/cm2 ( p>0.05).
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Kim H, Lee M, Cha MU, Nam KH, An SY, Park S, Jhee JH, Yun HR, Kee YK, Park JT, Yoo TH, Kang SW, Han SH. Microscopic hematuria is a risk factor of incident chronic kidney disease in the Korean general population: a community-based prospective cohort study. QJM 2018; 111:389-397. [PMID: 29554373 DOI: 10.1093/qjmed/hcy054] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Although asymptomatic microscopic hematuria (MH) is a common finding in clinical practice, its long-term outcome remains unknown. AIM This study evaluated the clinical implication of MH in the general population using a large-scale long-term longitudinal cohort database. METHODS This study included 8719 participants from the Korean Genome and Epidemiology Study between 2001 and 2014. MH was defined as ≥5 red blood cells per high-power field in random urinalysis without evidence of pyuria. The primary study outcome measure was incident chronic kidney disease (CKD), defined as estimated glomerular filtration rate <60 ml min-1⋅1.73⋅m-2. RESULTS During a median follow-up of 11.7 years, CKD occurred in 677 (7.8%) subjects. In Cox regression after adjustment for multiple confounders, subjects with MH had a significantly higher risk of incident CKD than those without [hazard ratio (HR) 1.45, 95% confidence interval (CI) 1.12-1.87; P = 0.005]. Isolated MH without proteinuria was also a risk factor of incident CKD (HR 1.37, 95% CI 1.04-1.79; P = 0.023) and the risk was further increased in MH with concomitant proteinuria (HR 5.41, 95% CI 2.54-11.49; P < 0.001). In propensity score matching analysis after excluding subjects with proteinuria, multi-variable stratified Cox regression analysis revealed that subjects with isolated MH had a significantly higher risk of incident CKD than those without (HR 1.83, 95% CI 1.14-2.94; P = 0.012). CONCLUSION The presence of MH is associated with an increased risk of incident CKD in the general population. Therefore, attentive follow-up is warranted in persons with MH for early detection of CKD.
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Affiliation(s)
- H Kim
- Department of Internal Medicine, College of Medicine, Institute of Kidney Disease Research, Yonsei University, Seoul, Korea
- Division of Nephrology, Soonchunhyang University Hospital, Seoul, Korea
| | - M Lee
- Department of Internal Medicine, College of Medicine, Institute of Kidney Disease Research, Yonsei University, Seoul, Korea
| | - M-U Cha
- Department of Internal Medicine, College of Medicine, Institute of Kidney Disease Research, Yonsei University, Seoul, Korea
| | - K H Nam
- Department of Internal Medicine, College of Medicine, Institute of Kidney Disease Research, Yonsei University, Seoul, Korea
| | - S Y An
- Department of Internal Medicine, College of Medicine, Institute of Kidney Disease Research, Yonsei University, Seoul, Korea
| | - S Park
- Department of Internal Medicine, College of Medicine, Institute of Kidney Disease Research, Yonsei University, Seoul, Korea
| | - J H Jhee
- Department of Internal Medicine, College of Medicine, Institute of Kidney Disease Research, Yonsei University, Seoul, Korea
| | - H-R Yun
- Department of Internal Medicine, College of Medicine, Institute of Kidney Disease Research, Yonsei University, Seoul, Korea
| | - Y K Kee
- Department of Internal Medicine, Hangang Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - J T Park
- Department of Internal Medicine, College of Medicine, Institute of Kidney Disease Research, Yonsei University, Seoul, Korea
| | - T-H Yoo
- Department of Internal Medicine, College of Medicine, Institute of Kidney Disease Research, Yonsei University, Seoul, Korea
| | - S-W Kang
- Department of Internal Medicine, College of Medicine, Institute of Kidney Disease Research, Yonsei University, Seoul, Korea
| | - S H Han
- Department of Internal Medicine, College of Medicine, Institute of Kidney Disease Research, Yonsei University, Seoul, Korea
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Kim Y, Jeon JY, Han SH, Ha N, Jang K, Kim MG. Quantitative analysis of acetylsalicylic acid in human blood using volumetric absorptive microsampling. Transl Clin Pharmacol 2018; 26:32-38. [PMID: 32055545 PMCID: PMC6989221 DOI: 10.12793/tcp.2018.26.1.32] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 03/08/2018] [Accepted: 03/10/2018] [Indexed: 11/25/2022] Open
Abstract
Volumetric absorptive microsampling (VAMS) is a novel sampling technique that allows for the collection of an accurate volume of blood by dipping a microsampler tip. The purpose of this study is to compare the requirement of a stabilizing reagent for the conventional venous blood sampling method versus VAMS in the analytical measurement of the concentration of acetylsalicylic acid. A high-performance liquid chromatography with mass spectrometry (LC-MS/MS) method was developed and validated for the accurate determination of acetylsalicylic acid in human blood. The blood samples spiked with acetylsalicylic acid with and without stabilizing reagent were absorbed into VAMS tips. In the whole blood sample, the same concentration was shown regardless of the addition of the stabilizing reagent, but the concentration decreased when the stabilizing reagent was not added to the VAMS sample. To apply the VAMS technology as a new blood sampling method, stabilizing reagents should be added before the analysis of acetylsalicylic acid concentration.
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Affiliation(s)
- Yunjeong Kim
- Center for Clinical Pharmacology and Biomedical Research Institute, Chonbuk National University Hospital, Jeonju 54907, Republic of Korea
| | - Ji-Young Jeon
- Center for Clinical Pharmacology and Biomedical Research Institute, Chonbuk National University Hospital, Jeonju 54907, Republic of Korea
| | - Song-Hee Han
- Center for Clinical Pharmacology and Biomedical Research Institute, Chonbuk National University Hospital, Jeonju 54907, Republic of Korea
| | - Na Ha
- Center for Clinical Pharmacology and Biomedical Research Institute, Chonbuk National University Hospital, Jeonju 54907, Republic of Korea
| | - Kyungho Jang
- Center for Clinical Pharmacology and Biomedical Research Institute, Chonbuk National University Hospital, Jeonju 54907, Republic of Korea
| | - Min-Gul Kim
- Center for Clinical Pharmacology and Biomedical Research Institute, Chonbuk National University Hospital, Jeonju 54907, Republic of Korea.,Department of Pharmacology, School of Medicine, Chonbuk National University, Jeonju 54907, Republic of Korea
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Han SH, Kim M, Chung YR, Yun BL, Jang M, Kim SM, Kang E, Kim EK, Park SY. Benign Intraductal Papilloma without Atypia on Core Needle Biopsy Has a Low Rate of Upgrading to Malignancy after Excision. J Breast Cancer 2018; 21:80-86. [PMID: 29628987 PMCID: PMC5880969 DOI: 10.4048/jbc.2018.21.1.80] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Accepted: 03/05/2018] [Indexed: 01/03/2023] Open
Abstract
PURPOSE The management of benign intraductal papilloma (IDP) without atypia diagnosed on core needle biopsy (CNB) remains controversial. This study was performed to evaluate the rate of upgrading to malignancy or high-risk lesions after excision and to identify factors associated with upgrading using a large series of benign IDP cases without atypia. METHODS We included patients who were diagnosed as having benign IDP without atypia on CNB and underwent surgical or vacuum-assisted excision between 2010 and 2015. We analyzed the clinical, radiologic, and histopathologic features of IDPs that were upgraded to malignancy or high-risk lesions after excision. RESULTS A total of 511 benign IDPs without atypia diagnosed via CNB were identified, of which 398 cases were treated with excision. After reviewing these cases, four cases of high-risk lesions in adjacent tissue on CNB, two cases which were revealed as papilloma with atypia, and nine cases of malignancy in the same breast were excluded. In the remaining 383 cases, the rate of upgrading to malignancy and high-risk lesions after excision was 0.8% and 4.4%, respectively. The presence of concurrent contralateral breast cancer, the presence of symptoms, and multifocality were factors significantly associated with upgrading to malignancy on subsequent excision. Surgical excision rather than vacuum-assisted excision was significantly associated with upgrading to high-risk lesions or malignancy. CONCLUSION The rate of upgrading to malignancy for benign IDP without atypia was very low, suggesting that close clinical and radiologic observation may be sufficient for patients with benign IDP without atypia on CNB under proper settings.
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Affiliation(s)
- Song-Hee Han
- Department of Pathology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
- Department of Pathology, Konyang University Hospital, Daejeon, Korea
| | - Milim Kim
- Department of Pathology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - Yul Ri Chung
- Department of Pathology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - Bo La Yun
- Department of Radiology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - Mijung Jang
- Department of Radiology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - Sun Mi Kim
- Department of Radiology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - Eunyoung Kang
- Department of Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - Eun-Kyu Kim
- Department of Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - So Yeon Park
- Department of Pathology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
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Kwak WY, Kwon JH, Grünberg P, Han SH, Cho BK. Current-induced magnetic switching with spin-orbit torque in an interlayer-coupled junction with a Ta spacer layer. Sci Rep 2018; 8:3826. [PMID: 29491458 PMCID: PMC5830507 DOI: 10.1038/s41598-018-22122-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Accepted: 02/14/2018] [Indexed: 11/09/2022] Open
Abstract
Spin-orbit torque has attracted considerable attention as a means to overcome limits of devices based on spin-transfer torque. However, a small magnetic field that is collinear to the current flow must be applied to break symmetry and induce deterministic current-induced magnetization switching. Recently, a junction utilizing interlayer coupling mediated by a Ru spacer layer between two CoFe layers was designed for symmetry breaking and exhibited current-induced magnetization switching without a magnetic field. Here, we demonstrate zero-field current-induced switching of the perpendicular magnetization of a Co layer that is indirectly coupled with a CoFe layer via a Ta spacer. The weak interlayer coupling exhibited by Ta allows the layer thickness to be relatively small (≈0.5 nm), enabling appropriate interlayer coupling to induce spin-orbit torque for current-induced magnetic switching. External magnetic field effects on switching characteristics show that the current switching process is quite stable against external environments.
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Affiliation(s)
- W-Y Kwak
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, 61005, Republic of Korea
| | - J-H Kwon
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, 61005, Republic of Korea
| | - P Grünberg
- Grünberg Center for Magnetic Nanomaterials, Gwangju Institute of Science and Technology (GIST), Gwangju, 61005, Republic of Korea
| | - S H Han
- Division of Navigation Science, Mokpo National Maritime University, Mokpo, 58628, Republic of Korea
| | - B K Cho
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, 61005, Republic of Korea. .,Grünberg Center for Magnetic Nanomaterials, Gwangju Institute of Science and Technology (GIST), Gwangju, 61005, Republic of Korea.
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Lim SI, Kim YK, Lim JA, Han SH, Hyun HS, Kim KS, Hyun BH, Kim JJ, Cho IS, Song JY, Choi SH, Kim SH, An DJ. Antigenic characterization of classical swine fever virus YC11WB isolates from wild boar. J Vet Sci 2018; 18:201-207. [PMID: 27515269 PMCID: PMC5489467 DOI: 10.4142/jvs.2017.18.2.201] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Revised: 06/21/2016] [Accepted: 07/21/2016] [Indexed: 02/02/2023] Open
Abstract
Classical swine fever (CSF), a highly contagious disease that affects domestic pigs and wild boar, has serious economic implications. The present study examined the virulence and transmission of CSF virus strain YC11WB (isolated from a wild boar in 2011) in breeding wild boar. Virulence of strain YC11WB in domestic pigs was also examined. Based on the severe clinical signs and high mortality observed among breeding wild boar, the pathogenicity of strain YC11WB resembled that of typical acute CSF. Surprisingly, in contrast to strain SW03 (isolated from breeding pigs in 2003), strain YC11WB showed both acute and strong virulence in breeding pigs. None of three specific monoclonal antibodies (7F2, 7F83, and 6F65) raised against the B/C domain of the SW03 E2 protein bound to the B/C domain of strain YC11WB due to amino acid mutations (720K→R and 723N→S) in the YC11WB E2 protein. Although strains YC11WB and SW03 belong to subgroup 2.1b, they had different mortality rates in breeding pigs. Thus, if breeding pigs have not developed protective immunity against CSF virus, they may be susceptible to strain YC11WB transmitted by wild boar, resulting in severe economic losses for the pig industry.
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Affiliation(s)
- Seong-In Lim
- Animal and Plant Quarantine Agency, Gimcheon 39660, Korea
| | - Yong Kwan Kim
- Animal and Plant Quarantine Agency, Gimcheon 39660, Korea
| | - Ji-Ae Lim
- Animal and Plant Quarantine Agency, Gimcheon 39660, Korea
| | - Song-Hee Han
- Animal and Plant Quarantine Agency, Gimcheon 39660, Korea
| | - Hee-Suk Hyun
- Animal and Plant Quarantine Agency, Gimcheon 39660, Korea
| | - Ki-Sun Kim
- Animal and Plant Quarantine Agency, Gimcheon 39660, Korea
| | - Bang-Hun Hyun
- Animal and Plant Quarantine Agency, Gimcheon 39660, Korea
| | - Jae-Jo Kim
- Animal and Plant Quarantine Agency, Gimcheon 39660, Korea
| | - In-Soo Cho
- Animal and Plant Quarantine Agency, Gimcheon 39660, Korea
| | - Jae-Young Song
- Animal and Plant Quarantine Agency, Gimcheon 39660, Korea
| | | | - Seung-Hoe Kim
- Korea Pork Producers Association, Seoul 06643, Korea
| | - Dong-Jun An
- Animal and Plant Quarantine Agency, Gimcheon 39660, Korea
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Kim EJ, Kwak YG, Park SH, Kim SR, Shin MJ, Yoo HM, Han SH, Kim DW, Choi YH, Yoo JH. Trends in device utilization ratios in intensive care units over 10-year period in South Korea: device utilization ratio as a new aspect of surveillance. J Hosp Infect 2017; 100:e169-e177. [PMID: 29042233 DOI: 10.1016/j.jhin.2017.10.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Accepted: 10/10/2017] [Indexed: 11/30/2022]
Abstract
BACKGROUND Device-associated infection (DAI) is an important issue related to patient safety. It is important to reduce unnecessary device utilization in order to decrease DAI rates. AIM To investigate the time trend of device utilization ratios (DURs) of voluntarily participating hospitals, collected over a 10-year period through the Korean National Healthcare-associated Infections Surveillance System (KONIS). METHODS DURs from 2006 to 2015 in 190 intensive care units (ICUs) participating in KONIS were included in this study. DURs were calculated as the ratio of device-days to patient-days. The pooled incidences of DAIs and DURs were calculated for each year of participation, and the year-wise trends were analysed. FINDINGS Year-wise ventilator utilization ratio (V-DUR) increased significantly from 0.40 to 0.41 (F = 6.27, P < 0.01), urinary catheter utilization ratio (U-DUR) increased non-significantly from 0.83 to 0.84 (F = 1.66, P = 0.10), and C-line utilization ratio (CL-DUR) decreased non-significantly from 0.55 to 0.51 (F = 1.62, P = 0.11). In the subgroup analysis, 'medical ICU' (F = 2.79, P < 0.01) and 'hospital with >900 beds' (F = 3.07, P < 0.01) were associated with the significant increase in V-DUR. CONCLUSION In Korea, V-DUR showed a significant, year-wise increasing trend. The trends for U-DUR and CL-DUR showed no significant decrease. Efforts are required to ensure the reduction of DURs.
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Affiliation(s)
- E J Kim
- Department of Infectious Diseases, Ajou University School of Medicine, Suwon, Republic of Korea
| | - Y G Kwak
- Department of Internal Medicine, Inje University Ilsan Paik Hospital, Goyang, Republic of Korea
| | - S H Park
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - S R Kim
- Infection Control Office, Korea University Guro Hospital, Seoul, Republic of Korea
| | - M J Shin
- Infection Control Office, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - H M Yoo
- Infection Control Office, Inje University Sanggye Paik Hospital, Seoul, Republic of Korea
| | - S H Han
- Department of Nursing, Soonchunhyang University College of Medicine, Cheonan, Republic of Korea
| | - D W Kim
- Department of Policy Research Affairs, National Health Insurance Service Ilsan Hospital, Goyang, Republic of Korea
| | - Y H Choi
- Department of Infectious Diseases, Ajou University School of Medicine, Suwon, Republic of Korea.
| | - J H Yoo
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
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44
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Lee Y, Han SH, Nam SH. Soft Independent Modeling of Class Analogy (SIMCA) Modeling of Laser-Induced Plasma Emission Spectra of Edible Salts for Accurate Classification. Appl Spectrosc 2017; 71:2199-2210. [PMID: 28374604 DOI: 10.1177/0003702817697337] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We report soft independent modeling of class analogy (SIMCA) analysis of laser-induced plasma emission spectra of edible salts from 12 different geographical origins for their classification model. The spectra were recorded by using a simple laser-induced breakdown spectroscopy (LIBS) device. Each class was modeled by principal component analysis (PCA) of the LIBS spectra. For the classification of a separate test data set, the SIMCA model showed 97% accuracy in classification. An additional insight could be obtained by comparing the SIMCA classification result with that of partial least squares discriminant analysis (PLS-DA). Different from SIMCA, the PLS-DA classification accuracy seems to be sensitive to addition of new sample classes to the whole data set. This indicates that the individual modeling approach (SIMCA) can be an alternative to global modeling (PLS-DA), particularly for the classification problems with a relatively large number of sample classes.
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Affiliation(s)
- Yonghoon Lee
- 1 Department of Chemistry, Mokpo National University, Jeonnam, Republic of Korea
| | - Song-Hee Han
- 2 Division of Navigation Science, Mokpo National Maritime University, Jeonnam, Republic of Korea
| | - Sang-Ho Nam
- 1 Department of Chemistry, Mokpo National University, Jeonnam, Republic of Korea
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45
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Suh KJ, Sung JH, Kim JW, Han SH, Lee HS, Min A, Kang MH, Kim JE, Kim JW, Kim SH, Lee JO, Kim YJ, Lee KW, Kim JH, Bang SM, Im SA, Lee JS. EGFR or HER2 inhibition modulates the tumor microenvironment by suppression of PD-L1 and cytokines release. Oncotarget 2017; 8:63901-63910. [PMID: 28969039 PMCID: PMC5609971 DOI: 10.18632/oncotarget.19194] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Accepted: 06/11/2017] [Indexed: 12/19/2022] Open
Abstract
Background Characteristics of tumor microenvironment have been suggested as predictive markers of anti-EGFR or anti-HER2 treatment response. However, the effect of EGFR/HER2 signal blockade on the tumor immune microenvironment is unclear. Methods EGFR/HER2 pathway signaling and PD-L1 expression in gastric cancer cell lines were screened by western blot analysis. PD-L1 and HER2 expressions in 251 resected gastric tumors were determined by immunohistochemistry, and changes in EFGR, HER2, and PD-L1 expression in paired specimens between pre- and post-chemotherapy were evaluated. PD-L1 expression in HER2-amplified cell lines was evaluated by western blotting, fluorescence-activated cell sorting, reverse transcription, and real-time quantitative PCR analyses before and after afatinib, lapatinib, pictilisib and trametinib treatment. Changes in cytokines were evaluated by reverse transcription, real-time quantitative PCR, and enzyme-linked immunosorbent assay after EGFR/HER2 inhibition. Results Cell lines with pEGFR or pHER2 overexpression showed higher PD-L1 expression. In resected gastric tumors, HER2 expression was significantly associated with PD-L1 expression (p=0.030). PD-L1 overexpression accompanied by increased HER2 expression was identified in a post-chemotherapy specimen from a patient with an initial HER2/PD-L1-negative tumor. In HER2-overexpressing cell lines, PD-L1 expression was decreased in a dose- and time-dependent manner after afatinib and lapatinib treatment. PI3K pathway inhibition by pictilisib, but not MEK pathway inhibition by trametinib, resulted in PD-L1 suppression. After lapatinib treatment, the release of CCL2, CCL21, VEGF and CXCL1 decreased in a dose-dependent manner. Conclusions Inhibition of the EGFR/HER2 signaling pathway, particularly of downstream PI3K activity, suppressed PD-L1 and release of cytokines, suggesting that EGFR/HER2 inhibition may create a more favorable milieu for tumor immunotherapy.
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Affiliation(s)
- Koung Jin Suh
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Bundang-gu, Seongnam, Korea.,Department of Internal Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Jongno-gu, Seoul, Korea
| | - Ji Hea Sung
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Bundang-gu, Seongnam, Korea
| | - Jin Won Kim
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Bundang-gu, Seongnam, Korea
| | - Song-Hee Han
- Department of Pathology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Bundang-gu, Seongnam, Korea
| | - Hye Seung Lee
- Department of Pathology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Bundang-gu, Seongnam, Korea
| | - Ahrum Min
- Cancer Research Institute, Seoul National University, Jongno-gu, Seoul, Korea
| | - Mi Hyun Kang
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Bundang-gu, Seongnam, Korea
| | - Ji Eun Kim
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Bundang-gu, Seongnam, Korea
| | - Ji-Won Kim
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Bundang-gu, Seongnam, Korea
| | - Se Hyun Kim
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Bundang-gu, Seongnam, Korea
| | - Jeong-Ok Lee
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Bundang-gu, Seongnam, Korea
| | - Yu Jung Kim
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Bundang-gu, Seongnam, Korea
| | - Keun-Wook Lee
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Bundang-gu, Seongnam, Korea
| | - Jee Hyun Kim
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Bundang-gu, Seongnam, Korea
| | - Soo-Mee Bang
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Bundang-gu, Seongnam, Korea
| | - Seock-Ah Im
- Department of Internal Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Jongno-gu, Seoul, Korea.,Cancer Research Institute, Seoul National University, Jongno-gu, Seoul, Korea
| | - Jong Seok Lee
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Bundang-gu, Seongnam, Korea
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46
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Teng YS, Xian ZX, Han SH, Liang ZJ, Pan HG, Li L. [Five-cases report of pharyngeal hairy polyps in infant]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2017; 52:534-535. [PMID: 28728244 DOI: 10.3760/cma.j.issn.1673-0860.2017.07.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Affiliation(s)
- Y S Teng
- Department of Otorhinolaryngology, Shenzhen Children's Hospital, Shenzhen 518026, China
| | - Z X Xian
- Department of Otorhinolaryngology, Shenzhen Children's Hospital, Shenzhen 518026, China
| | - S H Han
- Department of Otorhinolaryngology, Shenzhen Children's Hospital, Shenzhen 518026, China
| | - Z J Liang
- Department of Otorhinolaryngology, Shenzhen Children's Hospital, Shenzhen 518026, China
| | - H G Pan
- Department of Otorhinolaryngology, Shenzhen Children's Hospital, Shenzhen 518026, China
| | - L Li
- Department of Otorhinolaryngology, Shenzhen Children's Hospital, Shenzhen 518026, China
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47
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Kim TH, Grüenberg P, Han SH, Cho BK. Field-driven dynamics and time-resolved measurement of Dzyaloshinskii-Moriya torque in canted antiferromagnet YFeO 3. Sci Rep 2017; 7:4515. [PMID: 28674399 PMCID: PMC5495818 DOI: 10.1038/s41598-017-04883-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Accepted: 05/22/2017] [Indexed: 11/10/2022] Open
Abstract
Electrical spin switching in an antiferromagnet is one of the key issues for both academic interest and industrial demand in new-type spin devices because an antiferromagnetic system has a negligible stray field due to an alternating sign between sub-lattices, in contrast to a ferromagnetic system. Naturally, questions arise regarding how fast and, simultaneously, how robustly the magnetization can be switched by external stimuli, e.g., magnetic field and spin current. First, the exploitation of ultrafast precessional motion of magnetization in antiferromagnetic oxide has been studied intensively. Regarding robustness, the so-called inertia-driven switching scenario has been generally accepted as the switching mechanism in antiferromagnet system. However, in order to understand the switching dynamics in a canted antiferromagnet, excited by magnetic field, accurate equation of motion and corresponding interpretation are necessary. Here, we re-investigate the inertia-driven switching process, triggered by the strict phase matching between effective driving field, dh/dt, and antiferromagnetic order parameters, l. Such theoretical approaches make it possible to observe the static parameters of an antiferromagnet, hosting Dzyaloshinskii–Moriya (DM) interaction. Indeed, we estimate successfully static parameters, such as DM, exchange, and anisotropy energies, from dynamical behaviour in YFeO3, studied using terahertz time-domain spectroscopy.
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Affiliation(s)
- Tae Heon Kim
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, 500-712, Republic of Korea.,Gruenberg Center for Magnetic Nanomaterials, Gwangju Institute of Science and Technology (GIST), Gwangju, 500-712, Republic of Korea
| | - Peter Grüenberg
- Gruenberg Center for Magnetic Nanomaterials, Gwangju Institute of Science and Technology (GIST), Gwangju, 500-712, Republic of Korea
| | - S H Han
- Division of Navigation Science, Mokpo National Maritime University, Mokpo, 58628, Republic of Korea
| | - B K Cho
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, 500-712, Republic of Korea. .,Gruenberg Center for Magnetic Nanomaterials, Gwangju Institute of Science and Technology (GIST), Gwangju, 500-712, Republic of Korea.
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48
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Choi Y, Kim JW, Nam KH, Han SH, Kim JW, Ahn SH, Park DJ, Lee KW, Lee HS, Kim HH. Systemic inflammation is associated with the density of immune cells in the tumor microenvironment of gastric cancer. Gastric Cancer 2017; 20:602-611. [PMID: 27665104 DOI: 10.1007/s10120-016-0642-0] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Accepted: 09/05/2016] [Indexed: 02/07/2023]
Abstract
BACKGROUND The neutrophil-lymphocyte ratio (NLR) and the prognostic nutritional index (PNI) are markers of systemic inflammation known to be useful prognostic indicators of malignancy. However, little evidence has defined the influence of inflammation on the tumor microenvironment. METHODS Two hundred eighty-eight patients who underwent curative surgery for gastric cancer were included. Preoperative peripheral blood samples were used to analyze the NLR and PNI. The optimal cutoff levels for the NLR and PNI were defined by receiver operating characteristic curve analysis for survival (NLR = 2.7, PNI = 47.7). The densities of specific immune cells (CD3+, CD4+, CD8+) within the tumor microenvironment were measured in tumor microarrays by immunohistochemical analysis. RESULTS Two hundred thirty-five patients (81.6 %) had a low NLR and 53 patients (18.4 %) had a high NLR. One hundred seventeen patients (40.6 %) had a low PNI and 171 patients (59.4 %) had a high PNI. CD3+ and CD8+ immune cell density were not associated with the NLR and PNI. However, in the high-NLR group compared with the low-NLR group, CD4+ immune cell density was significantly decreased (P < 0.001). Similarly, the density of CD4+ immune cells was also significantly decreased in the low-PNI group compared with the high-PNI group (P = 0.007). A high NLR and a low PNI were correlated with worse overall survival in multivariate analysis (P = 0.028 and P = 0.002 respectively). CONCLUSIONS The NLR and PNI are associated with the density of CD4+ immune cells in the tumor microenvironment, which leads to prognostic values of systemic inflammation in gastric cancer.
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Affiliation(s)
- Yeonjoo Choi
- Division of Hematology and Medical Oncology, Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, 82 Gumi-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, 13620, Republic of Korea
| | - Jin Won Kim
- Division of Hematology and Medical Oncology, Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, 82 Gumi-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, 13620, Republic of Korea.
| | - Kyung Han Nam
- Department of Pathology, Haeundae Paik Hospital, Inje University College of Medicine, 875, Haeun-daero, Haeundae-gu, Busan, 48108, Republic of Korea
| | - Song-Hee Han
- Department of Pathology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, 82 Gumi-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, 13620, Republic of Korea
| | - Ji-Won Kim
- Division of Hematology and Medical Oncology, Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, 82 Gumi-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, 13620, Republic of Korea
| | - Sang-Hoon Ahn
- Department of Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, 82 Gumi-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, 13620, Republic of Korea
| | - Do Joong Park
- Department of Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, 82 Gumi-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, 13620, Republic of Korea
| | - Keun-Wook Lee
- Division of Hematology and Medical Oncology, Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, 82 Gumi-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, 13620, Republic of Korea
| | - Hye Seung Lee
- Department of Pathology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, 82 Gumi-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, 13620, Republic of Korea
| | - Hyung-Ho Kim
- Department of Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, 82 Gumi-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, 13620, Republic of Korea
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49
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Kim MJ, Moon WJ, Hur MS, Han SH, Lee YW, Choe YB, Ahn KJ. Ex vivo magnetic resonance imaging using hyaluronic acid fillers: Differences between monophasic and biphasic fillers. Skin Res Technol 2017; 24:16-19. [PMID: 28543874 DOI: 10.1111/srt.12384] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/18/2017] [Indexed: 11/28/2022]
Abstract
BACKGROUND/PURPOSE Hyaluronic acid (HA) is an anionic, non-sulfated glycosaminoglycan distributed throughout the human skin and injectable HA fillers are the most commonly used in aesthetic field. This study aimed to determine if differences in physical characteristics of HA products (monophasic or biphasic fillers) affect the patterns of magnetic resonance imaging (MRI). METHODS Twenty biphasic fillers and nine monophasic fillers were obtained from a commercial source, and examined with a 3.0 Tesla MRI scanner. Visual assessments and measurements of signal intensity for region of interest (ROI) were performed. A non-parametric Wilcoxon rank sum test was used to compare the ROI values. RESULTS Visual assessments by a radiologist did not show significant differences between the two types of fillers. While the signal intensity between the two types of filler did not differ significantly for T1-weighted images, the signal intensity of the biphasic filler was lower than that of the monophasic filler for T2-weighted images (P<.01). CONCLUSION Monophasic and biphasic HA fillers exhibited different MRI properties. Our findings may provide better insights into the use of in vivo MRI to evaluate aesthetic, procedure-related complications.
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Affiliation(s)
- M J Kim
- Department of Dermatology, Konkuk University School of Medicine, Seoul, Korea
| | - W-J Moon
- Department of Radiology, Konkuk University School of Medicine, Seoul, Korea
| | - M S Hur
- Department of Dermatology, Konkuk University School of Medicine, Seoul, Korea
| | - S H Han
- Department of Dermatology, Konkuk University School of Medicine, Seoul, Korea
| | - Y W Lee
- Department of Dermatology, Konkuk University School of Medicine, Seoul, Korea.,Research Institute of Medical Science, Konkuk University, Seoul, Korea
| | - Y B Choe
- Department of Dermatology, Konkuk University School of Medicine, Seoul, Korea.,Research Institute of Medical Science, Konkuk University, Seoul, Korea
| | - K J Ahn
- Department of Dermatology, Konkuk University School of Medicine, Seoul, Korea.,Research Institute of Medical Science, Konkuk University, Seoul, Korea
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50
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Han SH, Kim SH, Kim HJ, Lee Y, Choi SY, Park G, Kim DH, Lee A, Kim J, Choi JM, Kim Y, Myung K, Kim H, Kim DW. Cobll1 is linked to drug resistance and blastic transformation in chronic myeloid leukemia. Leukemia 2017; 31:1659. [PMID: 28397868 DOI: 10.1038/leu.2017.107] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
This corrects the article DOI: 10.1038/leu.2017.107.
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