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Park JS, Choi SJ, Kim MJ, Choi SY, Kim HY, Park YS, Chung SP, Lee JH. Cutoff of the reverse shock index multiplied by the Glasgow coma scale for predicting in-hospital mortality in adult patients with trauma: a retrospective cohort study. BMC Emerg Med 2024; 24:55. [PMID: 38584265 PMCID: PMC11000363 DOI: 10.1186/s12873-024-00978-z] [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: 12/27/2023] [Accepted: 03/28/2024] [Indexed: 04/09/2024] Open
Abstract
BACKGROUND Early identification of patients at risk of potential death and timely transfer to appropriate healthcare facilities are critical for reducing the number of preventable trauma deaths. This study aimed to establish a cutoff value to predict in-hospital mortality using the reverse shock index multiplied by the Glasgow Coma Scale (rSIG). METHODS This multicenter retrospective cohort study used data from 23 emergency departments in South Korea between January 2011 and December 2020. The outcome variable was the in-hospital mortality. The relationship between rSIG and in-hospital mortality was plotted using the shape-restricted regression spline method. To set a cutoff for rSIG, we found the point on the curve where mortality started to increase and the point where the slope of the mortality curve changed the most. We also calculated the cutoff value for rSIG using Youden's index. RESULTS A total of 318,506 adult patients with trauma were included. The shape-restricted regression spline curve showed that in-hospital mortality began to increase when the rSIG value was less than 18.86, and the slope of the graph increased the most at 12.57. The cutoff of 16.5, calculated using Youden's index, was closest to the target under-triage and over-triage rates, as suggested by the American College of Surgeons, when applied to patients with an rSIG of 20 or less. In addition, in patients with traumatic brain injury, when the rSIG value was over 25, in-hospital mortality tended to increase as the rSIG value increased. CONCLUSIONS We propose an rSIG cutoff value of 16.5 as a predictor of in-hospital mortality in adult patients with trauma. However, in patients with traumatic brain injury, a high rSIG is also associated with in-hospital mortality. Appropriate cutoffs should be established for this group in the future.
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Affiliation(s)
- Jun Seong Park
- Department of Emergency Medicine, Yonsei University College of Medicine, 50-1 Yonsei-Ro, Seodaemun-Gu, 03722, Seoul, Republic of Korea
| | - Sol Ji Choi
- Department of Emergency Medicine, Yonsei University College of Medicine, 50-1 Yonsei-Ro, Seodaemun-Gu, 03722, Seoul, Republic of Korea
| | - Min Joung Kim
- Department of Emergency Medicine, Yonsei University College of Medicine, 50-1 Yonsei-Ro, Seodaemun-Gu, 03722, Seoul, Republic of Korea
| | - So Yeon Choi
- Department of Emergency Medicine, Yonsei University College of Medicine, 50-1 Yonsei-Ro, Seodaemun-Gu, 03722, Seoul, Republic of Korea
| | - Ha Yan Kim
- Biostatistics Collaboration Unit, Department of Biomedical Systems Informatics, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Yoo Seok Park
- Department of Emergency Medicine, Yonsei University College of Medicine, 50-1 Yonsei-Ro, Seodaemun-Gu, 03722, Seoul, Republic of Korea
| | - Sung Phil Chung
- Department of Emergency Medicine, Yonsei University College of Medicine, 50-1 Yonsei-Ro, Seodaemun-Gu, 03722, Seoul, Republic of Korea
| | - Ji Hwan Lee
- Department of Emergency Medicine, Yonsei University College of Medicine, 50-1 Yonsei-Ro, Seodaemun-Gu, 03722, Seoul, Republic of Korea.
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Choi SJ, Kim MJ, Myung J, Hong JY, Chung HS, Chung SP, Lee JH. Characteristics of crashes and injuries on delivery motorcycles: A retrospective cohort study. Traffic Inj Prev 2022; 23:146-151. [PMID: 35212592 DOI: 10.1080/15389588.2022.2030056] [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] [Received: 07/05/2021] [Revised: 01/10/2022] [Accepted: 01/11/2022] [Indexed: 06/14/2023]
Abstract
Objectives: The food delivery market is growing rapidly. As most delivery riders use motorcycles, motorcycle crashes will increase along with the growing delivery market size. This study aimed at examining the proportions of motorcycle crashes and characteristics of injuries incurred while using motorcycles for occupational purposes.Methods: This retrospective analysis included motorcycle crash patients aged 16 years or older, who were treated in 23 emergency rooms in Korea, between 2014 and 2018. Patients were divided into two groups: delivery riders (delivery group) and others (nondelivery group). Crash and injury characteristics were compared between the two groups. In addition, trends of patients in the delivery group were compared from 2014 to 2018.Results: This study examined 26,982 motorcycle crash patients, including 3894 (14.43%) patients in the delivery group and 23,088 (85.57%) in the nondelivery group. The number of patients in the delivery group increased drastically from 583 in 2014 to 1029 in 2018, whereas the number of patients in the nondelivery group did not considerably increase (4411 in 2014 and 4462 in 2018). The delivery group had a higher proportion of crashes caused by collisions with cars or other motorcycles (p < 0.001); however, injury severity was lower. The delivery group had a lower proportion of head and face injuries but a higher proportion of extremity injuries. Furthermore, 39.9% of all crashes in this group occurred between 17:00 and 21:00. Over time, there were neither any changes in the injury severities, nor any changes in the characteristics of the delivery group, with the exception of increases in both the proportion of motorist insurance and the proportion of wearing a helmet.Conclusions: The results indicated differences in characteristics between delivery motorcycle crashes and other motorcycle crashes. Although delivery motorcycle crash severity was low compared to other motorcycle crashes, the number of patients increased significantly. Therefore, to prevent crashes, it is necessary to improve the working environment. In addition, to prevent the extremity injuries of delivery riders, the policy of wearing extremity protective gears should be considered.
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Affiliation(s)
- Sol Ji Choi
- Department of Emergency Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Min Joung Kim
- Department of Emergency Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jinwoo Myung
- Department of Emergency Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Ju Young Hong
- Department of Emergency Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Hyun Soo Chung
- Department of Emergency Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Sung Phil Chung
- Department of Emergency Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Ji Hwan Lee
- Department of Emergency Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
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Choi SJ, Park KJ, Heo C, Park BW, Kim M, Kim JK. Radiomics-based model for predicting pathological complete response to neoadjuvant chemotherapy in muscle-invasive bladder cancer. Clin Radiol 2021; 76:627.e13-627.e21. [PMID: 33762138 DOI: 10.1016/j.crad.2021.03.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 12/21/2020] [Accepted: 02/11/2021] [Indexed: 12/29/2022]
Abstract
AIM To develop and validate a radiomics-based model for predicting response to neoadjuvant chemotherapy (NAC) using baseline computed tomography (CT) images in patients with muscle-invasive bladder cancer (MIBC). MATERIALS AND METHODS A radiomics signature for predicting pathological complete response (pCR) was developed using radiomics features selected by a random forest classifier on baseline CT images, and imaging predictors were identified in the training set (87 patients). By incorporating imaging predictors and radiomics signature, an imaging-based model was constructed using multivariate logistic regression analysis and validated in an independent validation set consisting of 48 patients with CT from outside institutions. The performance and clinical usefulness of the imaging-based model for predicting pCR were evaluated using area under the receiver operating characteristic curve (AUC) and decision curve analysis. Using a cut-off determined in the training set, the positive likelihood ratios of the imaging-based model were calculated and compared with imaging and histological predictors. RESULTS The radiomics signature was developed based on six stable radiomics features. An imaging-based model incorporating radiomics signature, tumour shape, tumour size, and clinical stage showed good performance for predicting pCR in both the training (AUC, 0.85; 95% confidence interval [CI], 0.78-0.93) and validation (AUC, 0.75; 95% CI, 0.60-0.86) sets, providing a larger net benefit in decision curve analysis. The imaging-based model showed a higher positive likelihood ratio (1.91) for pCR than imaging and histological predictors (1.33-1.63). CONCLUSIONS The radiomics-based model using baseline CT images may predict the response of patients with MIBC to NAC.
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Affiliation(s)
- S J Choi
- Department of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - K J Park
- Department of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
| | - C Heo
- Institute for Life Sciences, University of Ulsan College of Medicine, Seoul, 05505, Republic of Korea
| | - B W Park
- Institute for Life Sciences, University of Ulsan College of Medicine, Seoul, 05505, Republic of Korea
| | - M Kim
- Department of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - J K Kim
- Department of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
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Kamali A, Sullivan KC, Rahmani F, Gandhi A, Aein A, Arevalo O, Rabiei P, Choi SJ, Zhang X, Gabr RE, Riascos RF. Indentation and Transverse Diameter of the Meckel Cave: Imaging Markers to Diagnose Idiopathic Intracranial Hypertension. AJNR Am J Neuroradiol 2020; 41:1487-1494. [PMID: 32763895 DOI: 10.3174/ajnr.a6682] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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: 10/14/2019] [Accepted: 05/19/2020] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Clinical and imaging manifestations of idiopathic intracranial hypertension should prompt early diagnosis and treatment to avoid complications. Multiple diagnostic imaging criteria are reported to suggest the diagnosis of idiopathic intracranial hypertension with questionable sensitivity and/or specificity. Increased intracranial pressure results in dilation of the perineural cisternal spaces such as the optic nerve sheaths and the Meckel cave. It may also cause protrusion of cisternal structures of the Meckel cave through the skull base foramina, which could result in indentation or a bilobed appearance of the Meckel cave. We investigated the changes in the Meckel cave in patients with proved idiopathic intracranial hypertension versus healthy controls. MATERIALS AND METHODS We studied 75 patients with a diagnosis of idiopathic intracranial hypertension and 75 age-and sex-matched healthy controls. The transverse diameter of Meckel cave was measured in the axial and coronal planes of T2-weighted MR imaging sequences, and comparison was made between the 2 groups. RESULTS The mean diameters of the Meckel cave on the coronal T2 plane in patients with idiopathic intracranial hypertension were 5.21 ± 1.22 mm on the right side and 5.16 ± 0.90 mm on the left side, while in the control group, they measured 3.89 ± 0.62 mm and 4.09 ± 0.68 mm, respectively (P value < .001). Of 75 patients with an approved diagnosis of idiopathic intracranial hypertension, 57 (76%) showed an indented Meckel cave as opposed to 21 (28%) in the control group. CONCLUSIONS Our results confirm for the first time that the shape and size of the Meckel cave can be used as sensitive and specific diagnostic imaging markers for the diagnosis of idiopathic intracranial hypertension.
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Affiliation(s)
- A Kamali
- From the Department of Diagnostic Radiology (A.K., A.A., O.A., P.R., X.Z., R.E.G., R.F.R.), University of Texas at Houston, Houston, Texas
| | - K C Sullivan
- University of Texas Medical School Health Science Center Houston (K.C.S., S.J.C.), Houston, Texas
| | - F Rahmani
- Neuroimaging Laboratory at Mallinckrodt Institute of Radiology (F.R.), Washington University School of Medicine, St. Louis, Missouri
| | - A Gandhi
- Rice University (A.G.), Houston, Texas
| | - A Aein
- From the Department of Diagnostic Radiology (A.K., A.A., O.A., P.R., X.Z., R.E.G., R.F.R.), University of Texas at Houston, Houston, Texas
| | - O Arevalo
- From the Department of Diagnostic Radiology (A.K., A.A., O.A., P.R., X.Z., R.E.G., R.F.R.), University of Texas at Houston, Houston, Texas
| | - P Rabiei
- From the Department of Diagnostic Radiology (A.K., A.A., O.A., P.R., X.Z., R.E.G., R.F.R.), University of Texas at Houston, Houston, Texas
| | - S J Choi
- University of Texas Medical School Health Science Center Houston (K.C.S., S.J.C.), Houston, Texas
| | - X Zhang
- From the Department of Diagnostic Radiology (A.K., A.A., O.A., P.R., X.Z., R.E.G., R.F.R.), University of Texas at Houston, Houston, Texas
| | - R E Gabr
- From the Department of Diagnostic Radiology (A.K., A.A., O.A., P.R., X.Z., R.E.G., R.F.R.), University of Texas at Houston, Houston, Texas
| | - R F Riascos
- From the Department of Diagnostic Radiology (A.K., A.A., O.A., P.R., X.Z., R.E.G., R.F.R.), University of Texas at Houston, Houston, Texas
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Park SY, Choi SJ, Park HJ, Ma SY, Moon YI, Park SK, Jung MY. Hexane extract of green tea ( Camellia sinensis) leaves is an exceptionally rich source of squalene. Food Sci Biotechnol 2020; 29:769-775. [PMID: 32523786 DOI: 10.1007/s10068-019-00724-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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: 09/07/2019] [Revised: 11/18/2019] [Accepted: 12/10/2019] [Indexed: 11/25/2022] Open
Abstract
Squalene is a cancer chemo-preventive and skin protective agent with high commercial demand. Here, we report for the first time that the green tea (Camellia sinensis) leaves is a surprisingly rich plant-based source of squalene. Young and tender leaves and old and turf leaves were collected at four different collecting seasons (April-August). Lipophilic compounds in the leaves and commercial green teas were extracted with hexane. The squalene contents in the hexane extracts varied greatly with the types of the leaves and collecting seasons. The hexane extract of turf leaves contained significantly higher contents of squalene than the extract of tender leaves. The hexane extract of the turf leaves collected in August contained the highest content of squalene (29.2 g/kg extract). This represents the first report on the qualitative and quantitative information on squalene in green tea leaves.
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Affiliation(s)
- Su Yeon Park
- Department of Food and Biotechnology, Graduate School, College of Food Science, Woosuk University, Samrea-up, Wanju-gun, Jeonbuk Province 565-701 Republic of Korea
| | - Sol Ji Choi
- Department of Food and Biotechnology, Graduate School, College of Food Science, Woosuk University, Samrea-up, Wanju-gun, Jeonbuk Province 565-701 Republic of Korea
| | - Hee Jeong Park
- Department of Food and Biotechnology, Graduate School, College of Food Science, Woosuk University, Samrea-up, Wanju-gun, Jeonbuk Province 565-701 Republic of Korea
| | - Sang Yong Ma
- Department of Food and Biotechnology, Graduate School, College of Food Science, Woosuk University, Samrea-up, Wanju-gun, Jeonbuk Province 565-701 Republic of Korea
| | - Yong Il Moon
- Department of Food Industry and Culinary Arts, Woosuk University, Wanju-gun, Jeonbuk Province Republic of Korea
| | - Sang-Kyu Park
- Department of Food Nutrition, Nambu University, Gwangju, Republic of Korea
| | - Mun Yhung Jung
- Department of Food and Biotechnology, Graduate School, College of Food Science, Woosuk University, Samrea-up, Wanju-gun, Jeonbuk Province 565-701 Republic of Korea
- Department of Food Industry and Culinary Arts, Woosuk University, Wanju-gun, Jeonbuk Province Republic of Korea
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Lee JS, Choi SJ, Kim L, Park IS, Han JY, Kim JM, Chu YC. ALK-positive anaplastic large cell lymphoma with a monomorphic small-cell pattern masquerading as inflammatory gastric lesions. Malays J Pathol 2019; 41:213-222. [PMID: 31427559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
INTRODUCTION Anaplastic lymphoma kinase-positive (ALK+) anaplastic large cell lymphoma (ALCL) with a non-common pattern can be diagnostic challenging. Pathologists can be unavoidably and unintentionally blind to non-descript tumor cells in a lymphohistiocytic- (LH) or small-cell (SC)-pattern. We report a case of primary systemic ALK+ ALCL with a SC pattern that presented as secondary gastric lesions with a mixed LH and SC pattern that was masqueraded as inflammatory lesions. CASE REPORT A 34-year-old woman with intractable epigastric pain was referred to have repeated endoscopy with biopsy. She was found to multiple gastric erosions and nodules that were diagnosed as inflammatory lesions both endoscopically and histologically. Meanwhile, she developed an acute onset of severe back pain associated with a pathologic compression fracture in the T3 thoracic vertebral body. Imaging studies disclosed a disseminated systemic disease involving abdominopelvic lymph nodes and cervical and thoracic vertebral bodies. The needle biopsy of the pelvic lymph node disclosed diffuse proliferation of monomorphic small round cells that were diffusely positive for CD30 and ALK. A diagnosis of ALK+ ALCL with a monomorphic SC pattern was rendered. DISCUSSION A retrospective review of the gastric biopsies with the aid of immunohistochemistry enabled us to recognise the presence of lymphomatous infiltrates with a mixed LH and SC pattern in every piece of gastric biopsies that were repeatedly misdiagnosed as inflammatory lesions. This case illustrates a significant diagnostic pitfall of the LH- and SC-patterns in ALK+ ALCL, in which the tumour cells featuring lymphoid, plasmacytoid or histiocytoid appearance can be masqueraded as inflammatory cells.
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Affiliation(s)
- J S Lee
- Inha University College of Medicine, Inha University Hospital, Department of Pathology, Incheon, Republic of Korea.
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Kim CG, Kim KH, Pyo KH, Xin CF, Hong MH, Ahn BC, Kim Y, Choi SJ, Yoon HI, Lee JG, Lee CY, Park SY, Park SH, Cho BC, Shim HS, Shin EC, Kim HR. Hyperprogressive disease during PD-1/PD-L1 blockade in patients with non-small-cell lung cancer. Ann Oncol 2019; 30:1104-1113. [PMID: 30977778 DOI: 10.1093/annonc/mdz123] [Citation(s) in RCA: 176] [Impact Index Per Article: 35.2] [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] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Immune checkpoint blockade with Programmed cell death 1 (PD-1)/PD-L1 inhibitors has been effective in various malignancies and is considered as a standard treatment modality for patients with non-small-cell lung cancer (NSCLC). However, emerging evidence show that PD-1/PD-L1 blockade can lead to hyperprogressive disease (HPD), a flair-up of tumor growth linked to dismal prognosis. This study aimed to evaluate the incidence of HPD and identify the determinants associated with HPD in patients with NSCLC treated with PD-1/PD-L1 blockade. PATIENTS AND METHODS We enrolled patients with recurrent and/or metastatic NSCLC treated with PD-1/PD-L1 inhibitors between April 2014 and November 2018. Clinicopathologic variables, dynamics of tumor growth, and treatment outcomes were analyzed in patients with NSCLC who received PD-1/PD-L1 blockade. HPD was defined according to tumor growth kinetics (TGK), tumor growth rate (TGR), and time to treatment failure (TTF). Immunophenotyping of peripheral blood CD8+ T lymphocytes was conducted to explore the potential predictive biomarkers of HPD. RESULTS A total of 263 patients were analyzed. HPD was observed in 55 (20.9%), 54 (20.5%), and 98 (37.3%) patients according to the TGK, TGR, and TTF. HPD meeting both TGK and TGR criteria was associated with worse progression-free survival [hazard ratio (HR) 4.619; 95% confidence interval (CI) 2.868-7.440] and overall survival (HR, 5.079; 95% CI, 3.136-8.226) than progressive disease without HPD. There were no clinicopathologic variables specific for HPD. In the exploratory biomarker analysis with peripheral blood CD8+ T lymphocytes, a lower frequency of effector/memory subsets (CCR7-CD45RA- T cells among the total CD8+ T cells) and a higher frequency of severely exhausted populations (TIGIT+ T cells among PD-1+CD8+ T cells) were associated with HPD and inferior survival rate. CONCLUSION HPD is common in NSCLC patients treated with PD-1/PD-L1 inhibitors. Biomarkers derived from rationally designed analysis may successfully predict HPD and worse outcomes, meriting further investigation of HPD.
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Affiliation(s)
- C G Kim
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon; Division of Medical Oncology, Department of Internal Medicine
| | - K H Kim
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon; Department of Radiation Oncology, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul
| | - K-H Pyo
- Division of Medical Oncology, Department of Internal Medicine; JE-UK Institute for Cancer Research, JEUK Co. Ltd, Gumi
| | - C-F Xin
- JE-UK Institute for Cancer Research, JEUK Co. Ltd, Gumi
| | - M H Hong
- Division of Medical Oncology, Department of Internal Medicine
| | - B-C Ahn
- Division of Medical Oncology, Department of Internal Medicine
| | - Y Kim
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon
| | - S J Choi
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon
| | - H I Yoon
- Department of Radiation Oncology, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul
| | - J G Lee
- Department of Thoracic and Cardiovascular Surgery
| | - C Y Lee
- Department of Thoracic and Cardiovascular Surgery
| | - S Y Park
- Department of Thoracic and Cardiovascular Surgery
| | - S-H Park
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon
| | - B C Cho
- Division of Medical Oncology, Department of Internal Medicine
| | - H S Shim
- Department of Pathology, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea.
| | - E-C Shin
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon.
| | - H R Kim
- Division of Medical Oncology, Department of Internal Medicine.
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Seo MR, Chae J, Kim YM, Cha HS, Choi SJ, Oh S, Roh CR. Hydroxychloroquine treatment during pregnancy in lupus patients is associated with lower risk of preeclampsia. Lupus 2019; 28:722-730. [DOI: 10.1177/0961203319843343] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [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
Background Hydroxychloroquine (HCQ) is regarded as a mainstay in the treatment of systemic lupus erythematosus (SLE) because of its efficacy in preventing flares, achieving remission, and reducing overall mortality. However, the impact of HCQ on pregnancy outcomes remains controversial. Objective We aimed to investigate the effect of HCQ on pregnancy outcomes in patients with SLE. Methods We performed a retrospective cohort study of 151 pregnancies in 122 patients with SLE (80 pregnancies in the HCQ treatment group and 71 pregnancies in the HCQ nontreatment group). We reviewed baseline characteristics including maternal comorbidities such as antiphospholipid syndrome, lupus nephritis, and autoimmune hepatitis. Pregnancy outcomes (preeclampsia, preterm delivery, and fetal growth restriction) and neonatal outcomes (gestational age at delivery and birth weight) were compared between HCQ treatment and nontreatment groups. Results Preeclampsia was significantly less complicated (7.5% vs 19.7%, p = 0.032) and neonatal birth weight was significantly greater (2757.0 ± 583.5 g vs 2542.3 ± 908.3 g, p = 0.001) in the HCQ treatment group than in the HCQ nontreatment group. Multiple logistic analysis adjusting for body mass index (BMI), lupus nephritis, serum uric acid, and estimated glomerular filtration rate revealed HCQ treatment was associated with exceedingly lower risk of preeclampsia in SLE pregnancy (odds ratio (OR) 0.106 (confidence interval (CI) 0.017–0.671)). Other independent risk factors for preeclampsia were a high prepregnancy BMI (OR 1.575 (CI 1.114–2.227)) and low eGFR level (OR 0.931 (CI 0.886–0.979)) before pregnancy. Conclusion Our data showed pregnancy outcomes in SLE patients can be improved in the HCQ treatment group with about 90% reduction of preeclampsia.
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Affiliation(s)
- M R Seo
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - J Chae
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Y M Kim
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - H S Cha
- Department of Internal Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - S J Choi
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - S Oh
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - C -R Roh
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
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Lee IS, Park SH, Choi SJ, Shim Y, Ahn SJ, Kim KW, Kim KK, Jeong YM, Choe YH. Diagnostic Performance of Multidetector Computerized Tomography in the Detection of Abdominal Complications Early and Late After Liver Transplantation: A 10-Year Experience. Transplant Proc 2018; 50:3673-3680. [PMID: 30577254 DOI: 10.1016/j.transproceed.2018.09.016] [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] [Received: 05/19/2018] [Revised: 08/15/2018] [Accepted: 09/05/2018] [Indexed: 11/30/2022]
Abstract
BACKGROUND Multidetector computerized tomography (MDCT) is considered to be a fast noninvasive diagnostic technique for the evaluation of postoperative complications in patients with liver transplantation (LT). However, its role has not been fully established in the diagnosis for detecting complications after liver transplantation. The aim of this work was to evaluate the diagnostic performance of MDCT for detecting abdominal complications in the early and late periods after LT. METHODS We retrospectively enrolled 75 patients who had undergone LT from March 2006 to January 2010, followed by MDCT from March 2006 to November 2017. Patients were divided into 2 groups according to the timing after LT: within the first 3 months (early period) or ≥3 months after LT (late period). We evaluated vascular, biliary, and other complications on MDCT. Angiography, endoscopic retrograde cholangiography, and percutaneous transhepatic cholangiography were used as reference standards. RESULTS We initially found 77 complications in 45 patients (60.0%) with the use of MDCT. After comparison with the reference standards, 83 complications were diagnosed in 49 patients (65.3%). Forty-seven complications (34 vascular, 10 biliary, 3 other complications) were diagnosed in 33 patients (44.0%) during the early period, and 36 complications (6 vascular, 20 biliary, 10 other complications) were detected in 27 patients (36.0%) in the late period. The sensitivity, specificity, and diagnostic accuracy of MDCT for diagnosing overall complications were, respectively, 93.6%, 90.2%, and 92.0% in the early period (for vascular complications: 97.1%, 92.6%, and 94.3%,; for biliary complications: 80.0%, 100%, and 97.7%) and 77.8%, 98.1%, and 89.8% in the late period (for vascular complications: 83.3%, 100%, and 98.9%; for biliary complications: 65.0%, 98.6%, and 90.9%). CONCLUSIONS Although MDCT in the late period should be interpreted with caution in patients with suspected biliary complication, MDCT is a reliable diagnostic technique for the identification of early and late abdominal complications after LT.
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Affiliation(s)
- I S Lee
- Department of Radiology, Gil Medical Center, Gachon University, Incheon, Korea
| | - S H Park
- Department of Radiology, Gil Medical Center, Gachon University, Incheon, Korea.
| | - S J Choi
- Department of Radiology, Gil Medical Center, Gachon University, Incheon, Korea
| | - Y Shim
- Department of Radiology, Gil Medical Center, Gachon University, Incheon, Korea
| | - S-J Ahn
- Department of Radiology, Gil Medical Center, Gachon University, Incheon, Korea
| | - K W Kim
- Department of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - K K Kim
- Department of Surgery, Gil Medical Center, Gachon University, Incheon, Korea
| | - Y M Jeong
- Department of Radiology, Gil Medical Center, Gachon University, Incheon, Korea
| | - Y H Choe
- Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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10
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Chung YW, Chung MW, Choi SK, Choi SJ, Choi SJN, Chung SY. Tacrolimus-Induced Apoptosis is Mediated by Endoplasmic Reticulum-derived Calcium-dependent Caspases-3,-12 in Jurkat Cells. Transplant Proc 2018; 50:1172-1177. [PMID: 29731088 DOI: 10.1016/j.transproceed.2018.01.050] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Accepted: 01/30/2018] [Indexed: 11/16/2022]
Abstract
Apoptotic signal pathways are delivered to caspase-3, caspase-9, or both in different cells via the death receptor pathway, mitochondrial pathway, or by the endoplasmic reticulum (ER) pathway through initiators of caspase-3, -8, -9, or -12. Tacrolimus (Tac)-induced apoptosis was characterized by nuclear fragmentation and caspase-3 activation. We examined the effect of tacrolimus on ER-derived calcium and caspase-3,-12-mediated apoptosis on Jurkat human T lymphocyte. Tac decreased the viability of Jurkat cells in a dose-dependent manner. Tac also increased continuously intracellular concentration of calcium from 24 hours to 72 hours. We did not find intracellular calcium changes on the treatment of calcium ionorpore (A23187) regardless of 1 nmol/L Tac concentration level. However, calcium adenosine triphosphatase inhibitor (thapsigargin) increased intracellular calcium accumulation and co-treating 1 nmol/L Tac further induced intracellular calcium accumulation. Interestingly, we found that 1 nmol/L Tac treatment induced activation of caspase-12 protease as well as the catalytic activity of caspase-3 but not catalytic activation of caspase-6, -8, and -9 proteases in Jurkat cells. These data advance our understanding of Tac-induced apoptosis is ER-derived calcium and caspases-3,-12- mediated apoptosis in human Jurkat cell line.
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Affiliation(s)
- Y W Chung
- Department of Surgery, Chonnam National University Medical School, Gwangju, Korea
| | - M W Chung
- Department of Medicine, Chonnam National University Medical School, Gwangju, Korea
| | - S K Choi
- Department of Medicine, Chonnam National University Medical School, Gwangju, Korea
| | - S J Choi
- Department of Surgery, Chonnam National University Medical School, Gwangju, Korea
| | - S J N Choi
- Department of Surgery, Chonnam National University Medical School, Gwangju, Korea
| | - S Y Chung
- Department of Surgery, Chonnam National University Medical School, Gwangju, Korea.
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11
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Kang MJ, Kim JH, Kim YK, Lee HJ, Shin KM, Kim JI, Lee HJ, Do KH, Yong HS, Choi SJ, Choi M, Jung JI. 2018 Korean Clinical Imaging Guideline for Hemoptysis. Korean J Radiol 2018; 19:866-871. [PMID: 30174475 PMCID: PMC6082761 DOI: 10.3348/kjr.2018.19.5.866] [Citation(s) in RCA: 12] [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: 02/22/2018] [Accepted: 04/03/2018] [Indexed: 11/25/2022] Open
Abstract
In 2014, the American College of Radiology (ACR) announced the guideline for the appropriate diagnostic approach and treatment of patients according to the severity of hemoptysis and risk for lung cancer. However, the application of the ACR guideline in Korea may not be appropriate, because many patients in Korea have active tuberculosis or pulmonary fibrosis due to previous tuberculosis. The Korean Society of Radiology and Korean Society of Thoracic Radiology have proposed a new guideline suitable for Korean practice. This new guideline was prepared through the consensus of a development committee, working party, and an advisory committee. The guideline proposal process was based on an evidence-based clinical imaging guideline proposed by the development committee. Clinical imaging guideline for adult patients with hemoptysis is as follows: Chest radiography is an initial imaging modality to evaluate hemoptysis. Contrast-enhanced chest CT is recommended in patients with two risk factors for lung cancer (> 40 years old and > 30 pack-year smoking history), moderate hemoptysis (> 30 mL/24 hours) or recurrent hemoptysis. Contrast-enhanced chest CT is also recommended in patients with massive hemoptysis (> 400 mL/24 hours) without cardiopulmonary compromise.
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Affiliation(s)
- Mi-Jin Kang
- Department of Radiolgoy, InJe University Sanggye Paik Hospital, Seoul 01757, Korea
| | - Jin Hwan Kim
- Department of Radiology, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon 35015, Korea
| | - Yoon Kyung Kim
- Department of Radiology, Gachon University Gil Hospital, Incheon 21565, Korea
| | - Hyun Joo Lee
- Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul 05505, Korea
| | - Kyung Min Shin
- Department of Radiology, Kyungpook National University Medical Center, Daegu 41944, Korea
| | - Jung Im Kim
- Department of Radiology, Kyung Hee University Hospital at Gangdong, Kyung Hee University College of Medicine, Seoul 05278, Korea
| | - Hyun Ju Lee
- Department of Radiology, Seoul National University Hospital, Seoul 03080, Korea
| | - Kyung Hyun Do
- Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul 05505, Korea
| | - Hwan Seok Yong
- Department of Radiology, Korea University Guro Hospital, Korea University College of Medicine, Seoul 08308, Korea
| | - Sol Ji Choi
- Division for Healthcare Technology Assessment Research, National Evidence-based Healthcare Collaborating Agency, Seoul 04554, Korea
| | - Miyoung Choi
- Division for Healthcare Technology Assessment Research, National Evidence-based Healthcare Collaborating Agency, Seoul 04554, Korea
| | - Jung Im Jung
- Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Korea
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12
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Lee CS, Baek HS, Bae IH, Choi SJ, Kim YJ, Lee JH, Kim JW. Depigmentation efficacy of galacturonic acid through tyrosinase regulation in B16 murine melanoma cells and a three-dimensional human skin equivalent. Clin Exp Dermatol 2018; 43:708-712. [PMID: 29744907 DOI: 10.1111/ced.13557] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/04/2017] [Indexed: 12/14/2022]
Abstract
Sugar is a well-known cosmetic ingredient for moisturizing skin with minimal side-effects. Several reports have demonstrated an antimelanogenic effect of sugar in melanocytes. We evaluated the whitening efficacy of galacturonic acid (GA), the main component of pectin, as an anti-melanogenic agent. GA significantly suppressed melanin synthesis and secretion in a concentration-dependent manner in α-melanocyte stimulating hormone-treated B16 melanoma cells, and inhibited tyrosinase activity and expression at a dose of 10 mmol/L. In a three-dimensional human skin equivalent (MelanoDerm), GA clearly brightened tissue colour. Haematoxylin and eosin and Fontana-Masson (F&M) staining of tissue sections revealed decreased melanin production without skin tissue collapse in the presence of GA. Interestingly, GA dramatically suppressed gene expression of the melanogenic proteins tyrosinase, tyrosinase-related protein (TYRP)-1 and microphthalmia-associated transcription factor, but not TYRP-2. The results support the utility of GA as an effective candidate antimelanogenic agent.
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Affiliation(s)
- C S Lee
- Amorepacific Corporation R&D Center, Yongin-si, Korea.,Department of Beauty and Cosmetic Science, College of Health Science, Eulji University, Seongnam-si, Korea
| | - H S Baek
- Amorepacific Corporation R&D Center, Yongin-si, Korea.,Department of Applied Chemistry, Hanyang University, Ansan-si, Korea.,Department of Bionano Technology, Hanyang University, Ansan-si, Korea
| | - I-H Bae
- Amorepacific Corporation R&D Center, Yongin-si, Korea
| | - S J Choi
- Amorepacific Corporation R&D Center, Yongin-si, Korea
| | - Y J Kim
- Amorepacific Corporation R&D Center, Yongin-si, Korea
| | - J H Lee
- Amorepacific Corporation R&D Center, Yongin-si, Korea
| | - J W Kim
- Department of Applied Chemistry, Hanyang University, Ansan-si, Korea.,Department of Bionano Technology, Hanyang University, Ansan-si, Korea
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13
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Abstract
OBJECTIVE The aim of this study was to determine whether polymorphisms in solute carrier family 2 and facilitated glucose transporter member 9 (SLC2A9) are associated with susceptibility to gout. METHODS A meta-analysis was conducted on associations between the rs12510549, rs16890979, and rs1014290 polymorphisms of SLC2A9 and gout susceptibility using fixed and random effects models. RESULTS Eleven comparative studies comprising 1,472 patients and 3,269 controls from Caucasian and Asian populations were included in this meta-analysis. The meta-analysis identified a significant negative association between gout and allele 2 (minor) of the rs12510549 polymorphism in the overall population (OR = 0.641, 95 % CI = 0.540-0.761, P = 4.1 × 10-7). Stratification by ethnicity identified a significant negative association between this polymorphism and gout in Caucasians (OR = 0.647, 95 % CI = 0.542-0.771, P = 1.2 × 10-6) but not in Asians (OR = 0.515, 95 % CI = 0.214-1.236, P = 0.137). The meta-analysis showed a significant negative association between gout and allele 2 of the rs16890979 polymorphism in all study subjects (OR = 0.229, 95 % CI = 0.084-0.628, P = 0.004). Stratification by ethnicity identified a significant negative association between this polymorphism and gout in Caucasians (OR = 0.469, 95 % CI = 0.317-0.695, P = 1.6 × 10-6) and in Asians (OR = 0.192, 95 % CI = 0.072-0.513, P = 0.001). A significant negative association was found between allele 2 of the rs1014290 polymorphism and gout susceptibility in Asians (OR = 0.597, 95 % CI = 0.478-0.746, P = 5.4 × 10-6) but not in Caucasians (OR = 0.778, 95 % CI = 0.595-1.043, P = 0.095). CONCLUSIONS This meta-analysis shows that the rs12510549, rs16890979, and rs1014290 polymorphisms of SLC2A9 protect against the development of gout in Caucasians and/or Asians.
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Affiliation(s)
- Y H Lee
- Division of Rheumatology, Department of Internal Medicine, Korea University Anam Hospital, Korea University College of Medicine, 73, Inchon-ro, Seongbuk-gu, 02841, Seoul, Korea.
| | - Y H Seo
- Division of Rheumatology, Department of Internal Medicine, Korea University Anam Hospital, Korea University College of Medicine, 73, Inchon-ro, Seongbuk-gu, 02841, Seoul, Korea
| | - J-H Kim
- Division of Rheumatology, Department of Internal Medicine, Korea University Anam Hospital, Korea University College of Medicine, 73, Inchon-ro, Seongbuk-gu, 02841, Seoul, Korea
| | - S J Choi
- Division of Rheumatology, Department of Internal Medicine, Korea University Anam Hospital, Korea University College of Medicine, 73, Inchon-ro, Seongbuk-gu, 02841, Seoul, Korea
| | - J D Ji
- Division of Rheumatology, Department of Internal Medicine, Korea University Anam Hospital, Korea University College of Medicine, 73, Inchon-ro, Seongbuk-gu, 02841, Seoul, Korea
| | - G G Song
- Division of Rheumatology, Department of Internal Medicine, Korea University Anam Hospital, Korea University College of Medicine, 73, Inchon-ro, Seongbuk-gu, 02841, Seoul, Korea
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14
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Hwang IC, Choi SJ, Choi JE, Ko EB, Suh JK, Choi I, Kang HJ, Kim YJ, Kim JY. Comparison of mid- to long-term clinical outcomes between anatomical testing and usual care in patients with suspected coronary artery disease: A meta-analysis of randomized trials. Clin Cardiol 2017; 40:1129-1138. [PMID: 28914973 DOI: 10.1002/clc.22799] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [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: 06/02/2017] [Revised: 08/07/2017] [Accepted: 08/14/2017] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND Controversies remain regarding clinical outcomes following initial strategies of coronary computed tomography angiography (CCTA) vs usual care with functional testing in patients with suspected coronary artery disease (CAD). HYPOTHESIS CCTA as initial diagnostic strategy results in better mid- to long-term outcomes than usual care in patients with suspected CAD. METHODS We searched PubMed, Embase, and Cochrane Library for randomized controlled trials comparing clinical outcomes during ≥6 months' follow-up between initial anatomical testing by CCTA vs usual care with functional testing in patients with suspected CAD. Occurrence of all-cause mortality, nonfatal myocardial infarction (MI), and major adverse cardiovascular events (MACE), and use of invasive coronary angiography and coronary revascularization, were compared between the 2 diagnostic strategies. RESULTS Twelve trials were included (20 014 patients; mean follow-up, 20.5 months). Patients undergoing CCTA as initial noninvasive testing had lower risk of nonfatal MI compared with those treated with usual care (risk ratio [RR]: 0.70, 95% confidence interval [CI]: 0.52-0.94, P = 0.02). There was a tendency for reduced MACE following initial CCTA strategy, but not for risk of all-cause mortality. Compared with functional testing, the CCTA strategy increased use of invasive coronary angiography (RR: 1.53, 95% CI: 1.12-2.09, P = 0.007) and coronary revascularization (RR: 1.49, 95% CI: 1.11-2.00, P = 0.007). CONCLUSIONS Anatomical testing with CCTA as the initial noninvasive diagnostic modality in patients with suspected CAD resulted in lower risk of nonfatal MI than usual care with functional testing, at the expense of more frequent use of invasive procedures.
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Affiliation(s)
- In-Chang Hwang
- Cardiovascular Center and Department of Internal Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Sol Ji Choi
- National Evidence-Based Healthcare Collaborating Agency, Seoul, Republic of Korea
| | - Ji Eun Choi
- National Evidence-Based Healthcare Collaborating Agency, Seoul, Republic of Korea
| | - Eun-Bi Ko
- National Evidence-Based Healthcare Collaborating Agency, Seoul, Republic of Korea.,Department of Health Administration, Yonsei University Graduate School, Wonju, Republic of Korea
| | - Jae Kyung Suh
- National Evidence-Based Healthcare Collaborating Agency, Seoul, Republic of Korea
| | - Insun Choi
- National Evidence-Based Healthcare Collaborating Agency, Seoul, Republic of Korea
| | - Hyun-Jae Kang
- Cardiovascular Center and Department of Internal Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Yong-Jin Kim
- Cardiovascular Center and Department of Internal Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Joo Youn Kim
- National Evidence-Based Healthcare Collaborating Agency, Seoul, Republic of Korea
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15
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Won YY, Park JS, Choi SJ, Hong SI. A novel flexible drill device enabling arthroscopic transosseous repair of Bankart lesions. Orthop Traumatol Surg Res 2017; 103:499-504. [PMID: 28359839 DOI: 10.1016/j.otsr.2017.02.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: 09/25/2016] [Revised: 01/27/2017] [Accepted: 02/22/2017] [Indexed: 02/02/2023]
Abstract
UNLABELLED We have developed a flexible drill device that makes arthroscopic transosseous repair possible, and report preliminary results. Twelve patients with post-traumatic anterior inferior glenohumeral instability were selected. SURGICAL TECHNIQUE the flexible drill device is inserted into the shoulder joint through the posterior portal and the guide pipe unit is placed 5mm posterior to the margin of the anterior glenoid rim. The flexible drill is driven through the glenoid with the power drill, creating a hole in the glenoid. A non-absorbable suture is passed through the hole and a sliding knot tying is performed over the capsule and labrum after completing stitches with the suture hook loaded. The same procedures are repeated in the 2, 3 and 4 o'clock positions of the glenoid. There was no recurrence of dislocation at the mean follow-up period of 52.3 months. The mean Rowe score was 89.5.
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Affiliation(s)
- Y-Y Won
- Department of Orthopedic Surgery, Ajou University School of Medicine, Suwon, Republic of Korea
| | - J S Park
- Hallym university, Kangnam Sacred Heart Hospital, 07441 Seoul, Republic of Korea.
| | - S J Choi
- Hallym university, Kangnam Sacred Heart Hospital, 07441 Seoul, Republic of Korea
| | - S I Hong
- Hallym university, Kangnam Sacred Heart Hospital, 07441 Seoul, Republic of Korea
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16
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Choi SJ, Jung MY. Simple and Fast Sample Preparation Followed by Gas Chromatography-Tandem Mass Spectrometry (GC-MS/MS) for the Analysis of 2- and 4-Methylimidazole in Cola and Dark Beer. J Food Sci 2017; 82:1044-1052. [DOI: 10.1111/1750-3841.13666] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2016] [Revised: 11/26/2016] [Accepted: 01/25/2017] [Indexed: 11/26/2022]
Affiliation(s)
- Sol Ji Choi
- Dept. of Food and Biotechnology, Graduate School; Woosuk Univ., Jeonbuk Province; 565-701Samnye-eup Wanju-gun Jeonbuk Province 565-701 South Korea
| | - Mun Yhung Jung
- Dept. of Food and Biotechnology, Graduate School; Woosuk Univ., Jeonbuk Province; 565-701Samnye-eup Wanju-gun Jeonbuk Province 565-701 South Korea
- Agricultural and Food Product Safety Analysis Center; Woosuk Univ., Jeonbuk Province; 565-701 South Korea
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17
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Jung JH, Song GG, Kim JH, Choi SJ. Association of Interleukin 10 Gene Polymorphisms with Autoimmune Thyroid Disease: Meta-Analysis. Scand J Immunol 2017; 84:272-277. [PMID: 27500787 DOI: 10.1111/sji.12470] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Accepted: 08/03/2016] [Indexed: 01/02/2023]
Abstract
The aim of this study was to perform a meta-analysis of eligible studies and to derive a precise estimate of the association between interleukin 10 (IL10) polymorphisms and susceptibility to autoimmune thyroid disease (AITD). Meta-analyses were conducted on the associations between AITD and the -1082 G/A (rs1800896), -819 C/T (rs1800871) and -592 C/A (rs1800872) polymorphisms in IL10, and the haplotype of these polymorphisms and AITD. A total of 2903 AITD patients and 3060 controls in 10 eligible studies were included in the meta-analysis. This meta-analysis showed significant associations between IL10 at the -1082 G allele and overall AITD (OR: 1.44, 95% CI 1.13-1.82, P = 0.003), but no association between the IL10 -592 C allele and the -819 C allele and AITD. Subgroup studies demonstrated significant associations between the -1082 G allele and susceptibility to Graves' disease. Ethnicity-specific meta-analysis revealed significant associations between the -1082 G allele and AITD susceptibility in Asian populations; however, in Middle Eastern populations, no association was evident. Meta-analysis of the IL10 haplotype revealed an association between the ATA haplotype and AITD (OR: 1.17, 95% CI 1.00-1.36, P = 0.04). Meta-analysis demonstrates that the IL10 polymorphisms are associated with susceptibility to AITD.
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Affiliation(s)
- J H Jung
- Division of Rheumatology, Department of Internal Medicine, Korea University Guro Hospital, Seoul, Korea
| | - G G Song
- Division of Rheumatology, Department of Internal Medicine, Korea University Guro Hospital, Seoul, Korea
| | - J-H Kim
- Division of Rheumatology, Department of Internal Medicine, Korea University Guro Hospital, Seoul, Korea
| | - S J Choi
- Division of Rheumatology, Department of Internal Medicine, Korea University Ansan Hospital, Ansan-si, Gyeonggi-do, Korea.
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18
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Choi SJ, Jeong WK, Jo AJ, Choi JA, Kim MJ, Lee M, Jung SE, Do KH, Yong HS, Sheen S, Choi M, Baek JH. Methodology for Developing Evidence-Based Clinical Imaging Guidelines: Joint Recommendations by Korean Society of Radiology and National Evidence-Based Healthcare Collaborating Agency. Korean J Radiol 2017; 18:208-216. [PMID: 28096730 PMCID: PMC5240490 DOI: 10.3348/kjr.2017.18.1.208] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [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: 08/11/2016] [Accepted: 08/17/2016] [Indexed: 02/07/2023] Open
Abstract
This paper is a summary of the methodology including protocol used to develop evidence-based clinical imaging guidelines (CIGs) in Korea, led by the Korean Society of Radiology and the National Evidence-based Healthcare Collaborating Agency. This is the first protocol to reflect the process of developing diagnostic guidelines in Korea. The development protocol is largely divided into the following sections: set-up, process of adaptation, and finalization. The working group is composed of clinical imaging experts, and the developmental committee is composed of multidisciplinary experts to validate the methodology. The Korean CIGs will continue to develop based on this protocol, and these guidelines will act for decision supporting tools for clinicians as well as reduce medical radiation exposure.
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Affiliation(s)
- Sol Ji Choi
- Division for Healthcare Technology Assessment Research, National Evidence-Based Healthcare Collaborating Agency, Seoul 04554, Korea
| | - Woo Kyoung Jeong
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Korea
| | - Ae Jeong Jo
- Division for Healthcare Technology Assessment Research, National Evidence-Based Healthcare Collaborating Agency, Seoul 04554, Korea
| | - Jin A Choi
- Division for Healthcare Technology Assessment Research, National Evidence-Based Healthcare Collaborating Agency, Seoul 04554, Korea
| | - Min-Jeong Kim
- Division for Healthcare Technology Assessment Research, National Evidence-Based Healthcare Collaborating Agency, Seoul 04554, Korea
| | - Min Lee
- Division for Healthcare Technology Assessment Research, National Evidence-Based Healthcare Collaborating Agency, Seoul 04554, Korea
| | - Seung Eun Jung
- Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Korea
| | - Kyung Hyun Do
- Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul 05505, Korea
| | - Hwan Seok Yong
- Department of Radiology, Korea University Guro Hospital, Korea University College of Medicine, Seoul 08308, Korea
| | - Seungsoo Sheen
- Department of Pulmonary and Critical Care Medicine, Ajou University School of Medicine, Suwon 16499, Korea
| | - Miyoung Choi
- Division for Healthcare Technology Assessment Research, National Evidence-Based Healthcare Collaborating Agency, Seoul 04554, Korea
| | - Jung Hwan Baek
- Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul 05505, Korea
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19
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Choi YI, Jakhongir M, Choi SJ, Kim L, Park IS, Han JY, Kim JM, Chu YC. High-quality cell block preparation from scraping of conventional cytology slide: a technical report on a modified cytoscrape cell block technique. Malays J Pathol 2016; 38:295-304. [PMID: 28028300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
BACKGROUND Immunocytochemistry (ICC) on formalin-fixed paraffin embedded cell blocks is an ancillary tool commonly recruited for differential diagnoses of fine needle aspiration cytology (FNAC) samples. However, the quality of conventional cell blocks in terms of adequate cellularity and evenness of distribution of cytologic material is not always satisfactory for ICC. We introduce a modified agarose-based cytoscrape cell block (CCB) technique that can be effectively used for the preparation of cell blocks from scrapings of conventional FNAC slides. METHODS A decoverslipped FNAC slide was mounted with a small amount of water. The cytological material was scraped off the slide into a tissue mold by scraping with a cell scraper. The cytoscrape material was pelleted by centrifugation and pre-embedded in ultra-low gelling temperature agarose and then re-embedded in conventional agarose. The final agarose gel disk was processed and embedded in paraffin. RESULTS The quality of the ICC on the CCB sections was identical to that of the immunohistochemical stains on histological sections. By scrapping and harvesting the entirety of the cytological material off the cytology slide into a compact agarose cell button, we could avoid the risk of losing diagnostic material during the CCB preparation. CONCLUSION This modified CCB technique enables concentration and focusing of minute material while maintaining the entire amount of the cytoscrape material on the viewing spot of the CCB sections. We believe this technique can be effectively used to improve the level of confidence in diagnosis of FNAC especially when the FNAC slides are the only sample available.
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Affiliation(s)
- Y I Choi
- Inha University Hospital, Department of Pathology, 27, Inhang-ro, Jung-gu, Incheon, 22332, Rep. of Korea.
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20
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Abstract
Objective We aimed to evaluate the relationship between telomere length and systemic lupus erythematosus (SLE). Methods PUBMED and EMBASE databases were searched; meta-analyses were performed comparing telomere length in SLE patients and healthy controls, and on SLE patients in subgroups based on ethnicity, sample type, assay method and data type. Results Eight studies including 472 SLE patients and 365 controls were ultimately selected which showed that telomere length was significantly shorter in the SLE group than in the control group (standardized mean difference (SMD) = -0.835, 95% confidence interval (CI) = -1.291 to -0.380, p = 3.3 × 10-4). Stratification by ethnicity showed significantly shortened telomere length in the SLE group in Caucasian, Asian and mixed populations (SMD = -0.455, 95% CI = -0.763 to -0.147, p = 0.004; SMD = -0.887, 95% CI = -1.261 to -0.513, p = 3.4 × 10-4; SMD = -0.535, 95% CI = -0.923 to -0.147, p = 0.007; respectively). Furthermore, telomere length was significantly shorter in the SLE group than in the control group in whole blood and peripheral blood mononuclear cell groups (SMD = -0.361, 95% CI = -0.553 to -0.169, p = 2.3 × 10-4; SMD = -1.546, 95% CI = -2.583 to -0.510, p = 0.003; respectively); a similar trend was observed in leukocyte groups (SMD = -0.699, 95% CI = -1.511 to -0.114, p = 0.092). Meta-analyses based on assay method or data type revealed similar associations. Conclusions Our meta-analysis demonstrated that telomere length was significantly shorter in patients with SLE, regardless of ethnicity, sample type or assay method evaluated.
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Affiliation(s)
- Y H Lee
- Division of Rheumatology, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
| | - J H Jung
- Division of Rheumatology, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
| | - Y H Seo
- Division of Rheumatology, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
| | - J-H Kim
- Division of Rheumatology, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
| | - S J Choi
- Division of Rheumatology, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
| | - J D Ji
- Division of Rheumatology, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
| | - G G Song
- Division of Rheumatology, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
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21
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Abstract
The aim of the study is to investigate whether the functional p53 codon 72 polymorphism is associated with susceptibility to SLE and its clinical features. A polymerase chain reaction of genomic DNA-restriction fragment length polymorphism was used to determine genotypes of the p53 codon 72 in 90 SLE patients and 114 healthy controls. Clinical/serological manifestations were analysed in each patient and correlated with the genotypes. The OR of the association of the Pro allele with SLE was 1.70 (95% CI, 1.15-2.53, P = 0.0079) and the OR of the Pro/Pro (a recessive model) was significantly increased (OR = 2.58, 95% CI = 1.24-5.39, P = 0.0093). The Armitage’s trend test indicated a significant dosage effect of the Pro allele for SLE (OR = 1.73, chi-square = 7.08, P = 0.0078). However, there was no significant association of the polymorphism with clinical/serological manifestations studied here. In conclusion, our finding suggests the functional p53 codon 72 polymorphism may be associated with SLE susceptibility, suggesting individuals who carry the Pro allele may have a higher risk to SLE susceptibility than those with the Arg allele. Further studies for replications are needed to confirm that the p53 polymorphism contributes to SLE.
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Affiliation(s)
- Y H Lee
- Division of Rheumatology, Department of Internal Medicine, Korea University Medical Center, College of Medicine, Korea University, Anam-Dong, Seongbuk-Ku, Seoul, Korea.
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Choi SJ, Park SY, Park JS, Park SK, Jung MY. Contents and compositions of policosanols in green tea (Camellia sinensis) leaves. Food Chem 2016; 204:94-101. [PMID: 26988480 DOI: 10.1016/j.foodchem.2016.02.027] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [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: 06/25/2015] [Revised: 12/25/2015] [Accepted: 02/02/2016] [Indexed: 11/19/2022]
Abstract
Policosanol (PC) is a mixture of health promoting bioactive long-chain aliphatic alcohols. Here, we report that green tea (Camellia sinensis) leaves are the exceptionally rich plant-sources of PC. Young and tender leaves and old and turf leaves of C. sinensis were hand-picked in spring and autumn. The total contents of PC in the leaves were in the range of 726.2-1363.6mg/kg as determined by a GC-MS/MS. The compositions of PC in the leaves were different with harvest season and types. The total contents of PC in commercial green tea leaves were found to be in the range of 856.7-1435.1mg/kg. Interestingly, the infused green tea leaves contained the higher PC than the non-infused green tea product, reaching to 1629.4mg/kg. This represents the first report on the contents and compositions of PC in green tea leaves, showing unambiguous evidence of their potential as rich sources of PC.
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Affiliation(s)
- Sol Ji Choi
- Department of Food and Biotechnology, Graduate School, College of Food Science, Woosuk University, Samrea-Up, Wanju-Kun, Jeonbuk Province 565-701, Republic of Korea
| | - Su Yeon Park
- Department of Food and Biotechnology, Graduate School, College of Food Science, Woosuk University, Samrea-Up, Wanju-Kun, Jeonbuk Province 565-701, Republic of Korea
| | - Ji Su Park
- Korea Food Research Institute, Songnam-Si, Kyongki, Republic of Korea
| | - Sang-Kyu Park
- Department of Food Nutrition, Nambu University, Gwangju, Republic of Korea
| | - Mun Yhung Jung
- Department of Food and Biotechnology, Graduate School, College of Food Science, Woosuk University, Samrea-Up, Wanju-Kun, Jeonbuk Province 565-701, Republic of Korea.
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Jeong WK, Baek JH, Jung SE, Do KH, Yong HS, Kim MJ, Choi M, Lee M, Choi SJ, Jo AJ, Choi JA. Imaging Guidelines for Enhancing Justifications for Radiologic Studies. J Korean Med Sci 2016; 31 Suppl 1:S38-44. [PMID: 26908986 PMCID: PMC4756340 DOI: 10.3346/jkms.2016.31.s1.s38] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Accepted: 10/21/2015] [Indexed: 12/21/2022] Open
Abstract
Justification in the field of radiology refers to the appropriate use of radiologic imaging modalities, and may be achieved by establishing clinical imaging guidelines (CIGs). Recently, CIGs have been shown to be useful in selecting the proper medical imaging modality, resulting in the reduction of inappropriate radiologic examinations, thereby enhancing justifications. However, the development of CIGs is both time-consuming and difficult as the methodology of evidence-based medicine should be adhered to. Thus, although the radiologic societies in developed countries such as the United Kingdom and USA are already developing and implementing CIGs in their clinical practices, CIGs are not yet readily available in many other countries owing to differences in medical circumstances and resources. In this review, we assess the role and limitations of CIGs by examining the current status of CIGs in developed countries, and also describe the specific efforts made to establish CIGs in Korea.
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Affiliation(s)
- Woo Kyoung Jeong
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jung Hwan Baek
- Department of Radiology and the Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Seung Eun Jung
- Department of Radiology, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Kyung Hyun Do
- Department of Radiology and the Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Hwan Seok Yong
- Department of Radiology, Korea University Guro Hospital, Korea University College of Medicine, Seoul, Korea
| | - Min-Jeong Kim
- Division for Healthcare Technology Assessment Research, National Evidence-based Healthcare Collaborating Agency, Seoul, Korea
| | - Miyoung Choi
- Division for Healthcare Technology Assessment Research, National Evidence-based Healthcare Collaborating Agency, Seoul, Korea
| | - Min Lee
- Division for Healthcare Technology Assessment Research, National Evidence-based Healthcare Collaborating Agency, Seoul, Korea
| | - Sol Ji Choi
- Division for Healthcare Technology Assessment Research, National Evidence-based Healthcare Collaborating Agency, Seoul, Korea
| | - Ae Jeong Jo
- Division for Healthcare Technology Assessment Research, National Evidence-based Healthcare Collaborating Agency, Seoul, Korea
| | - Jin A Choi
- Division for Healthcare Technology Assessment Research, National Evidence-based Healthcare Collaborating Agency, Seoul, Korea
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Lee YH, Choi SJ, Ji JD, Song GG. Overall and cause-specific mortality in systemic lupus erythematosus: an updated meta-analysis. Lupus 2016; 25:727-34. [PMID: 26811368 DOI: 10.1177/0961203315627202] [Citation(s) in RCA: 187] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Accepted: 12/21/2015] [Indexed: 11/16/2022]
Abstract
AIMS This study aimed to assess all-cause and cause-specific standardized mortality ratios (SMRs) in patients with systemic lupus erythematosus (SLE). METHODS We surveyed studies examining all-cause and/or cause-specific SMR in patients with SLE compared to the general population using PUBMED, EMBASE and Cochrane databases and manual searches. We performed a meta-analysis of all-cause, sex-specific, ethnicity-specific, and cause-specific SMRs in SLE patients. RESULTS Fifteen reports including 26,101 patients with SLE with 4640 deaths met the inclusion criteria. Compared to the general population, all-cause SMR was significantly increased 2.6-fold in patients with SLE (SMR 2.663, 95% CI 2.090-3.393, p < 1.0 × 10(-8)). Stratification by ethnicity showed that all-cause SMR was 2.721 (95% CI 1.867-3.966, p = 1.9 × 10(-6)) in Caucasians and 2.587 (95% CI 1.475-4.535, p = 0.001) in Asians. Sex-specific meta-analysis revealed that all-cause SMR was 3.141 (95% CI 2.351-4.198, p < 1.0 × 10(-8)) for women and 3.516 (95% CI 2.928-4.221, p < 1.0 × 10(-8)) for men. The risk of mortality was significantly increased for mortality due to renal disease (SMR 4.689, 95% CI 2.357-9.330, p = 1.10 × 10(-5)), cardiovascular disease (CVD) (SMR 2.253, 95% CI 1.304-3.892, p = 0.004), and infection (SMR 4.980, 95% CI 3.876-6.398, p < 1.0 × 10(-8)), although there was no significant increase in SMR for mortality due to cancer (SMR 1.163, 95% CI 0.572-2.363, p = 0.676). CONCLUSIONS Patients with SLE had higher rates of death from all causes, regardless of sex, ethnicity, renal disease, CVD or infection. However, the risk of death due to malignancy was not increased.
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Affiliation(s)
- Y H Lee
- Division of Rheumatology, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
| | - S J Choi
- Division of Rheumatology, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
| | - J D Ji
- Division of Rheumatology, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
| | - G G Song
- Division of Rheumatology, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
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Lee YH, Choi SJ, Ji JD, Song GG. Association between toll-like receptor polymorphisms and systemic lupus erythematosus: a meta-analysis update. Lupus 2016; 25:593-601. [PMID: 26762473 DOI: 10.1177/0961203315622823] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [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: 06/30/2015] [Accepted: 11/24/2015] [Indexed: 01/29/2023]
Abstract
OBJECTIVE The aim of this study was to determine whether polymorphisms of the Toll-like receptor (TLR) genes are associated with susceptibility to systemic lupus erythematosus (SLE). METHODS The authors conducted a meta-analysis of the relationship between 12 TLR polymorphisms and SLE susceptibility. RESULTS In total, 26 studies that involved 11,984 patients and 14,572 controls were included in the meta-analysis. The meta-analysis showed no association between the two alleles of the rs352140, rs5743836, and rs352139 polymorphisms of TLR9 and SLE, but indicated an association between the two alleles of the rs187084 polymorphism (TLR9) and SLE in the overall population (OR = 0.869, 95% CI = 0.762-0.992, P = 0.038). No association was detected between rs3764880 (TLR8) and SLE; however, our meta-analysis indicated an association between rs3764879 (TLR8) and SLE in Caucasians (OR = 1.414, 95% CI = 1.139-1.756, P = 0.002). An association between rs179008 (TLR7) and SLE was found in the African (OR = 0.430, 95% CI = 0.238-0.775, P = 0.005), but not in the Caucasian population (OR = 1.206, 95% CI = 0.932-1.614, P = 0.145). Furthermore, our meta-analysis indicated a significant association between rs3853839 (TLR7) and SLE in the Asian population (OR = 0.773, 95% CI = 0.735, 0.823, P < 1.0 × 10(-9)). No associations were found between rs5744168 (TLR5), rs4986791 (TLR4), rs4986790 (TLR4), and rs3775291 (TLR3) polymorphisms and SLE susceptibility. CONCLUSIONS Our meta-analysis suggests that TLR7, TLR8, and TLR9 polymorphisms are associated with the development of SLE in Caucasian, Asian, and African populations.
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Affiliation(s)
- Y H Lee
- Division of Rheumatology, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
| | - S J Choi
- Division of Rheumatology, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
| | - J D Ji
- Division of Rheumatology, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
| | - G G Song
- Division of Rheumatology, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
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Ko Y, Lee YM, Lee HY, Lee YS, Song JW, Hong GY, Kim MY, Lee HK, Choi SJ, Shim EJ. Changes in lung function according to disease extent before and after pulmonary tuberculosis. Int J Tuberc Lung Dis 2016; 19:589-95. [PMID: 25868029 DOI: 10.5588/ijtld.14.0454] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
OBJECTIVE To evaluate changes in lung function in individuals before and after treatment for pulmonary tuberculosis (PTB) in relation to extent of disease. DESIGN Using a retrospective cohort design, changes in and predictors of lung function were evaluated. RESULTS A total of 41 patients were included in the final analysis. The median decline in annualised forced expiratory volume in 1 sec (FEV1) was 180.0 ml/year (95%CI 118.9-356.1) in advanced PTB and 94.7 ml/year (95%CI 33.4-147.3) in localised PTB (ΔFEV1% predicted/year 9.4%, 95%CI 4.4-14.0 vs. 3.8%, 95%CI 1.8-6.2). The median decline in annualised forced vital capacity (FVC) was 309.6 ml/year (95%CI 137.0-359.0) in advanced PTB and 101.1 ml/year (95%CI 30.3-219.6) in localised PTB (ΔFVC % predicted/year 7.3%, 95%CI 5.3-12.3 vs. 2.9%, 95%CI 0.9-6.5). CONCLUSIONS As the sample size of our study was small, the conclusions could be biased. Nevertheless, our findings show that PTB causes a significant decline in lung function even in localised PTB, whereas advanced PTB was associated with excessive or even higher decline. This study suggests that early diagnosis and treatment of PTB is needed to preserve lung function.
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Affiliation(s)
- Y Ko
- Department of Pulmonary and Critical Care Medicine, Hallym University Kangdong Sacred Heart Hospital, Seoul, Republic of Korea; Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Busan Paik Hospital, Inje University College of Medicine, Busan, Republic of Korea
| | - Y-M Lee
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Busan Paik Hospital, Inje University College of Medicine, Busan, Republic of Korea
| | - H-Y Lee
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Busan Paik Hospital, Inje University College of Medicine, Busan, Republic of Korea
| | - Y S Lee
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Busan Paik Hospital, Inje University College of Medicine, Busan, Republic of Korea
| | - J-W Song
- Division of Pulmonary Medicine, CHA University School of Medicine, Gumi CHA Hospital, Gumi, Republic of Korea
| | - G-Y Hong
- Division of Pulmonology and Critical Care Medicine, Department of Internal Medicine, Dankook University Hospital, Cheonan, Republic of Korea
| | - M-Y Kim
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Busan Paik Hospital, Inje University College of Medicine, Busan, Republic of Korea
| | - H-K Lee
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Busan Paik Hospital, Inje University College of Medicine, Busan, Republic of Korea
| | - S J Choi
- Department of Radiology, Inje University College of Medicine, Busan, Republic of Korea
| | - E-J Shim
- Department of Pharmacology and Pharmaco Genomics Research Center, Inje University College of Medicine, Busan, Republic of Korea
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Xu S, Nam SM, Kim JH, Das R, Choi SK, Nguyen TT, Quan X, Choi SJ, Chung CH, Lee EY, Lee IK, Wiederkehr A, Wollheim CB, Cha SK, Park KS. Palmitate induces ER calcium depletion and apoptosis in mouse podocytes subsequent to mitochondrial oxidative stress. Cell Death Dis 2015; 6:e1976. [PMID: 26583319 PMCID: PMC4670935 DOI: 10.1038/cddis.2015.331] [Citation(s) in RCA: 135] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Revised: 10/02/2015] [Accepted: 10/12/2015] [Indexed: 12/14/2022]
Abstract
Pathologic alterations in podocytes lead to failure of an essential component of the glomerular filtration barrier and proteinuria in chronic kidney diseases. Elevated levels of saturated free fatty acid (FFA) are harmful to various tissues, implemented in the progression of diabetes and its complications such as proteinuria in diabetic nephropathy. Here, we investigated the molecular mechanism of palmitate cytotoxicity in cultured mouse podocytes. Incubation with palmitate dose-dependently increased cytosolic and mitochondrial reactive oxygen species, depolarized the mitochondrial membrane potential, impaired ATP synthesis and elicited apoptotic cell death. Palmitate not only evoked mitochondrial fragmentation but also caused marked dilation of the endoplasmic reticulum (ER). Consistently, palmitate upregulated ER stress proteins, oligomerized stromal interaction molecule 1 (STIM1) in the subplasmalemmal ER membrane, abolished the cyclopiazonic acid-induced cytosolic Ca2+ increase due to depletion of luminal ER Ca2+. Palmitate-induced ER Ca2+ depletion and cytotoxicity were blocked by a selective inhibitor of the fatty-acid transporter FAT/CD36. Loss of the ER Ca2+ pool induced by palmitate was reverted by the phospholipase C (PLC) inhibitor edelfosine. Palmitate-dependent activation of PLC was further demonstrated by following cytosolic translocation of the pleckstrin homology domain of PLC in palmitate-treated podocytes. An inhibitor of diacylglycerol (DAG) kinase, which elevates cytosolic DAG, strongly promoted ER Ca2+ depletion by low-dose palmitate. GF109203X, a PKC inhibitor, partially prevented palmitate-induced ER Ca2+ loss. Remarkably, the mitochondrial antioxidant mitoTEMPO inhibited palmitate-induced PLC activation, ER Ca2+ depletion and cytotoxicity. Palmitate elicited cytoskeletal changes in podocytes and increased albumin permeability, which was also blocked by mitoTEMPO. These data suggest that oxidative stress caused by saturated FFA leads to mitochondrial dysfunction and ER Ca2+ depletion through FAT/CD36 and PLC signaling, possibly contributing to podocyte injury.
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Affiliation(s)
- S Xu
- Department of Physiology and Institute of Lifestyle Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - S M Nam
- Department of Physiology and Institute of Lifestyle Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea.,Department of Internal Medicine, Daejeon Sun Hospital, Daejeon, Korea
| | - J-H Kim
- Department of Physiology and Institute of Lifestyle Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - R Das
- Department of Physiology and Institute of Lifestyle Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - S-K Choi
- Department of Physiology and Institute of Lifestyle Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - T T Nguyen
- Department of Physiology and Institute of Lifestyle Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - X Quan
- Department of Physiology and Institute of Lifestyle Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - S J Choi
- Department of Microbiology, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - C H Chung
- Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - E Y Lee
- Department of Internal Medicine, Soonchunhyang University Cheonan Hospital, Cheonan, Korea
| | - I-K Lee
- Department of Internal Medicine, Kyungpook National University Hospital, Daegu, Korea
| | - A Wiederkehr
- Nestlé Institute of Health Sciences, Lausanne, Switzerland
| | - C B Wollheim
- Department of Cell Physiology and Metabolism, University of Geneva, Geneva, Switzerland
| | - S-K Cha
- Department of Physiology and Institute of Lifestyle Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - K-S Park
- Department of Physiology and Institute of Lifestyle Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
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Song GG, Bae SC, Seo YH, Kim JH, Choi SJ, Ji JD, Lee YH. Meta-analysis of functional MBL polymorphisms. Associations with rheumatoid arthritis and primary Sjögren's syndrome. Z Rheumatol 2015; 73:657-64. [PMID: 25060516 DOI: 10.1007/s00393-014-1408-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
OBJECTIVE The aim of this study was to determine whether functional mannose-binding lectin gene (MBL) polymorphisms are associated with the susceptibility to rheumatoid arthritis (RA) or primary Sjögren's syndrome (pSS). METHODS A meta-analysis was conducted to investigate the potential association of RA or pSS with MBL polymorphisms, including the codon 54 (allele B), codon 57 (allele C), and codon 52 (allele D) variants of exon 1, and the - 550 (allele L) and - 221 (allele X) promoter variants. RESULTS A total of 12 comparative studies, including eight RA (1623 patients and 1671 controls) and four pSS (280 patients and 516 controls) studies, were included in the meta-analysis. The meta-analysis revealed no association between the MBL B allele and RA in the overall study population (odds ratio [OR] 0.991, 95 % confidence interval [CI] 0.726-1.355, p = 0.957). However, the meta-analysis showed significant associations between the MBL D, H, and X alleles and RA in the overall population (OR 1.708, 95 % CI 1.077-2.707, p = 0.023; OR 1.936, 95 % CI 1.218-3.078, p = 0.005; OR 1.582, 95 % CI 1.216-2.057, p = 0.001, respectively). An association was found between the MBL B allele and pSS in the overall study population (OR 0.691, 95 % CI 0.541-0.917, p = 0.010). Stratification by ethnicity indicated a trend toward an association between the B allele and pSS in European populations, but no association in Asian populations (OR 0.689, 95 % CI 0.465-1.021, p = 0.063; OR 0.896, 95 % CI 0.311-2.562, p = 0.838, respectively). CONCLUSION This meta-analysis demonstrated an association between the MBL D, L, and X alleles and the risk of RA. It also demonstrated an association between the MBL B allele and the susceptibility to pSS, suggesting a protective role of the MBL B allele against the development of pSS.
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Affiliation(s)
- G G Song
- Division of Rheumatology, Department of Internal Medicine, Korea University Anam Hospital, Korea University College of Medicine, 126-1, Anam-dong 5-ga, Seongbuk-gu, 136-705, Seoul, Korea
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Lee YH, Bae SC, Choi SJ, Ji JD, Song GG. Associations between the functional CD40 rs4810485 G/T polymorphism and susceptibility to rheumatoid arthritis and systemic lupus erythematosus: a meta-analysis. Lupus 2015; 24:1177-83. [DOI: 10.1177/0961203315583543] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Accepted: 03/30/2015] [Indexed: 11/16/2022]
Abstract
Objective The aim of this study was to determine whether the functional CD40 rs4810485 G/T polymorphism is associated with susceptibility to rheumatoid arthritis (RA) or with susceptibility to systemic lupus erythematosus (SLE). Methods A series of meta-analyses were conducted to test for association between the CD40 rs4810485 G/T polymorphism and RA or SLE. Results A total of 21 comparisons involving 15,095 patients and 27,050 controls for RA, and 1353 patients and 2342 controls for SLE were considered. Meta-analysis showed a significant association between the CD40 rs4810485 T allele and RA in all subjects (odds ratio (OR) 0.890, 95% confidence interval (CI) 0.846–0.936, p = 5.5 × 10−7). After stratification by ethnicity, the CD40 T allele was found to be significantly associated with RA in Europeans (OR 0.879, 95% CI 0.848–0.901, p = 3.0 × 10−9). A similar pattern of association was observed between the CD40 T allele and RA when the analysis was performed using the recessive, dominant, and additive models. Meta-analysis also showed a significant association between the CD40 polymorphism and SLE in Europeans (OR for the T allele 0.715, 95% CI 0.641–0.832, p = 1.4 × 10−6). Conclusions Our meta-analyses confirm that the CD40 rs4810485 G/T polymorphism is associated with susceptibility to RA and SLE in Europeans.
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Affiliation(s)
- Y H Lee
- Division of Rheumatology, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
| | - S-C Bae
- The Hospital for Rheumatic Diseases, Hanyang University Medical Center, Seoul, Korea
| | - S J Choi
- Division of Rheumatology, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
| | - J D Ji
- Division of Rheumatology, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
| | - G G Song
- Division of Rheumatology, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
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Han SB, Gwak MS, Choi SJ, Ko JS, Kim GS, Son HJ, Shin JC. Risk factors for inadvertent hypothermia during adult living-donor liver transplantation. Transplant Proc 2015; 46:705-8. [PMID: 24767329 DOI: 10.1016/j.transproceed.2013.11.091] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [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: 10/01/2013] [Accepted: 11/15/2013] [Indexed: 01/10/2023]
Abstract
BACKGROUND Hypothermia (core temperature <35°C) causes multiple physiologic disturbances, including coagulopathy and cardiac dysfunction. Patients undergoing liver transplantation are at risk of inadvertent hypothermia and might be more vulnerable to its adverse effects. We sought to identify the factors contributing to hypothermia during living-donor liver transplantation (LDLT), which have not yet been studied in depth. METHODS Medical records of 134 recipients who underwent adult-to-adult LDLT were reviewed. Core temperature at the following time points were taken: anesthetic induction, skin incision, start and end of the anhepatic phase, and hourly after hepatic reperfusion. RESULTS Of 134 recipients, 29 (21.6%) developed hypothermia during surgery. Four independent risk factors for hypothermia were identified: small body weight-to-body surface area ratio, acute hepatic failure, high Model for End-Stage Liver Disease (MELD) score, and low graft-to-recipient weight ratio. The amount of core temperature drop was positively correlated with the number of involved risk factors. Each risk factor had a respective contribution according to the operative phases: body weight-to-body surface area ratio and the MELD score for the preanhepatic phase, acute deterioration of hepatic failure for the anhepatic phase, and graft-to-recipient weight ratio was for the postreperfusion phase. CONCLUSIONS Hypothermia was independently associated with the recipient's morphometric characteristics, emergency of end-stage liver disease, MELD score, and graft volume. These factors showed a cumulative effect, and the role of each factor was different according to the operative phase. These results should aid in the development of an optimal thermal strategy during LDLT.
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Affiliation(s)
- S B Han
- Department of Anesthesiology and Pain Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - M S Gwak
- Department of Anesthesiology and Pain Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
| | - S J Choi
- Department of Anesthesiology and Pain Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - J S Ko
- Department of Anesthesiology and Pain Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - G S Kim
- Department of Anesthesiology and Pain Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - H J Son
- Department of Anesthesiology and Pain Medicine, Kangwon National University School of Medicine, Chuncheon, Korea
| | - J C Shin
- Department of Anesthesiology and Pain Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Wong MY, Borgkvist A, Choi SJ, Mosharov EV, Bamford NS, Sulzer D. Dopamine-dependent corticostriatal synaptic filtering regulates sensorimotor behavior. Neuroscience 2015; 290:594-607. [PMID: 25637802 DOI: 10.1016/j.neuroscience.2015.01.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [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: 10/17/2014] [Revised: 01/12/2015] [Accepted: 01/15/2015] [Indexed: 10/24/2022]
Abstract
Modulation of corticostriatal synaptic activity by dopamine is required for normal sensorimotor behaviors. After loss of nigrostriatal dopamine axons in Parkinson's disease, l-3,4-dihydroxyphenlalanine (l-DOPA) and dopamine D2-like receptor agonists are used as replacement therapy, although these drugs also trigger sensitized sensorimotor responses including dyskinesias and impulse control disorders. In mice, we lesioned dopamine projections to the left dorsal striatum and assayed unilateral sensorimotor deficits with the corridor test as well as presynaptic corticostriatal activity with the synaptic vesicle probe, FM1-43. Sham-lesioned mice acquired food equivalently on both sides, while D2 receptor activation filtered the less active corticostriatal terminals, a response that required coincident co-activation of mGlu-R5 metabotropic glutamate and CB1 endocannabinoid receptors. Lesioned mice did not acquire food from their right, but overused that side following treatment with l-DOPA. Synaptic filtering on the lesioned side was abolished by either l-DOPA or a D2 receptor agonist, but when combined with a CB1 receptor antagonist, l-DOPA or D2 agonists normalized both synaptic filtering and behavior. Thus, high-pass filtering of corticostriatal synapses by the coordinated activation of D2, mGlu-R5, and CB1 receptors is required for normal sensorimotor response to environmental cues.
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Affiliation(s)
- M Y Wong
- Department of Neurology, Columbia University Medical Center, New York, NY 10032, USA
| | - A Borgkvist
- Department of Neurology, Columbia University Medical Center, New York, NY 10032, USA
| | - S J Choi
- Department of Neurology, Columbia University Medical Center, New York, NY 10032, USA
| | - E V Mosharov
- Department of Neurology, Columbia University Medical Center, New York, NY 10032, USA
| | - N S Bamford
- Departments of Neurology, Pediatrics and Psychology, University of Washington and Seattle Children's Hospital, Seattle, WA 98105, USA
| | - D Sulzer
- Department of Neurology, Columbia University Medical Center, New York, NY 10032, USA; Department of Psychiatry, Columbia University Medical Center, New York State Psychiatric Institute, New York, NY 10032, USA; Department of Pharmacology, Columbia University Medical Center, New York, NY 10032, USA.
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Abstract
We demonstrated sensitive detection of individual yeast cells and yeast films by using slot antenna arrays operating in the terahertz frequency range. Microorganisms located at the slot area cause a shift in the resonant frequency of the THz transmission. The shift was investigated as a function of the surface number density for a set of devices fabricated on different substrates. In particular, sensors fabricated on a substrate with relatively low permittivity demonstrate higher sensitivity. The frequency shift decreases with increasing slot antenna width for a fixed coverage of yeast film, indicating a field enhancement effect. Furthermore, the vertical range of the effective sensing volume has been studied by varying the thickness of the yeast film. The resonant frequency shift saturates at 3.5 μm for a slot width of 2 μm. In addition, the results of finite-difference time-domain simulations are in good agreement with our experimental data.
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Park SJ, Hong JT, Choi SJ, Kim HS, Park WK, Han ST, Park JY, Lee S, Kim DS, Ahn YH. Detection of microorganisms using terahertz metamaterials. Sci Rep 2014; 4:4988. [PMID: 24832607 PMCID: PMC4023130 DOI: 10.1038/srep04988] [Citation(s) in RCA: 107] [Impact Index Per Article: 10.7] [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: 11/26/2013] [Accepted: 04/28/2014] [Indexed: 12/23/2022] Open
Abstract
Microorganisms such as fungi and bacteria cause many human diseases and therefore rapid and accurate identification of these substances is essential for effective treatment and prevention of further infections. In particular, contemporary microbial detection technique is limited by the low detection speed which usually extends over a couple of days. Here we demonstrate that metamaterials operating in the terahertz frequency range shows promising potential for use in fabricating the highly sensitive and selective microbial sensors that are capable of high-speed on-site detection of microorganisms in both ambient and aqueous environments. We were able to detect extremely small amounts of the microorganisms, because their sizes are on the same scale as the micro-gaps of the terahertz metamaterials. The resonant frequency shift of the metamaterials was investigated in terms of the number density and the dielectric constants of the microorganisms, which was successfully interpreted by the change in the effective dielectric constant of a gap area.
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Affiliation(s)
- S J Park
- Department of Physics and Division of Energy Systems Research, Ajou University, Suwon 443-749, Korea
| | - J T Hong
- Department of Physics and Division of Energy Systems Research, Ajou University, Suwon 443-749, Korea
| | - S J Choi
- Department of Biological Science, Ajou University, Suwon 443-749, Korea
| | - H S Kim
- Department of Biological Science, Ajou University, Suwon 443-749, Korea
| | - W K Park
- Advanced Medical Device Research Center, Korea Electrotechnology Research Institute, Ansan 426-170, Korea
| | - S T Han
- Advanced Medical Device Research Center, Korea Electrotechnology Research Institute, Ansan 426-170, Korea
| | - J Y Park
- Department of Physics and Division of Energy Systems Research, Ajou University, Suwon 443-749, Korea
| | - S Lee
- Department of Physics and Division of Energy Systems Research, Ajou University, Suwon 443-749, Korea
| | - D S Kim
- Center for Subwavelength Optics and Department of Physics and Astronomy, Seoul National University, Seoul 151-747, Korea
| | - Y H Ahn
- Department of Physics and Division of Energy Systems Research, Ajou University, Suwon 443-749, Korea
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Chung HE, Yu J, Baek M, Lee JA, Kim MS, Kim SH, Maeng EH, Lee JK, Jeong J, Choi SJ. Toxicokinetics of zinc oxide nanoparticles in rats. ACTA ACUST UNITED AC 2013. [DOI: 10.1088/1742-6596/429/1/012037] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Gwak MS, Kim WH, Choi SJ, Lee JJ, Ko JS, Kim GS, Kim YI, Kim MH. Arthroscopic shoulder surgery under general anesthesia with brachial plexus block: postoperative respiratory dysfunction of combined obstructive and restrictive pathology. Anaesthesist 2013; 62:113-20. [PMID: 23400711 DOI: 10.1007/s00101-012-2125-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [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: 10/07/2012] [Revised: 12/04/2012] [Accepted: 12/10/2012] [Indexed: 11/25/2022]
Abstract
OBJECTIVE Changes in respiratory parameters and pulmonary function tests were evaluated after shoulder arthroscopic surgery with brachial plexus block (BPB). The purpose of this study was to identify the mechanism of respiratory dysfunction after this type of surgery. METHODS Patients undergoing arthroscopic rotator cuff repair under general anesthesia (GA) with BPB were enrolled in the arthroscopy group (n = 30) while those undergoing open reduction of a clavicle or humerus fracture under GA were enrolled in the control group (n = 30). Forced vital capacity (FVC) and forced expiratory volume 1 s (FEV(1)) were measured at the outpatient clinic stage (#1) before (#2) and 20 min after BPB (#3) and 1 h after extubation (#4). Respiratory variable measurements along with the cuff leak test were performed 5 min after surgical positioning (T1) and at the start of skin closure (T2). Respiratory discomfort was evaluated after extubation. The upper airway diameters and soft tissue depth of chest wall were also measured by ultrasonography at stages #3 and #4. RESULTS Static compliance decreased significantly at T2 in the arthroscopy group (50 ± 11 at T1 vs. 44 ± 9 ml/cm H(2)O at T2, p =0.035) but not in the control group. The incidence of positive cuff leak tests at T2 was significantly higher in the arthroscopy group than in the control group (47% in the arthroscopy group vs. 17% in controls, p =0.010). While FEV(1) and FVC remained stable at stages #1 and #2, FVC and FEV(1) decreased at stages #3 and #4 only in the arthroscopy group (FVC in arthroscopy group, #2: 3.26 ± 0.77 l; #3: 2.55 ± 0.63 l, p =0.015 vs. #2; #4: 2.66 ± 0.41 l, p =0.040 vs. #2). The subglottic diameter decreased at #4 in the arthroscopy group, while no changes occurred in the control group (0.70 ± 0.21 cm vs. 0.85 ± 0.23 cm in the arthroscopy and control groups, respectively, p =0.011). Depth of skin to pleura increased at both intercostal spaces 1-2 and 3-4 in the arthroscopy group. There were three cases of hypoxia (S(p)O(2) < 95%) with room air in the arthroscopy group while none occurred in the controls. CONCLUSION Shoulder arthroscopic surgery under GA with BPB induced both restrictive and obstructive pathologies. It is important to maintain a high level of awareness for the potential negative respiratory effects of this surgery especially for subjects with pre-existing cardiopulmonary disease. The measurements in this study would be useful to monitor the risk of respiratory dysfunction in these patients.
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Affiliation(s)
- M S Gwak
- Department of Anesthesiolgy and Pain Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50 Irwon-Dong, 135-710, Seoul, Republic of Korea
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Lee SH, Lee MW, Yoo KH, Kim DS, Son MH, Sung KW, Cheuh H, Choi SJ, Oh W, Yang YS, Koo HH. Co-transplantation of third-party umbilical cord blood-derived MSCs promotes engraftment in children undergoing unrelated umbilical cord blood transplantation. Bone Marrow Transplant 2013; 48:1040-5. [DOI: 10.1038/bmt.2013.7] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2012] [Revised: 01/05/2013] [Accepted: 01/10/2013] [Indexed: 12/11/2022]
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Hahm TS, Ahn HJ, Ryu S, Gwak MS, Choi SJ, Kim JK, Yu JM. Combined carbamazepine and pregabalin therapy in a rat model of neuropathic pain. Br J Anaesth 2012; 109:968-74. [PMID: 22936823 DOI: 10.1093/bja/aes306] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND Carbamazepine and pregabalin have proven effects against neuropathic pain. Carbamazepine blocks voltage-dependent Na(+) channels, whereas pregabalin blocks voltage-dependent Ca(2+) channels. The authors hypothesized that the co-administration of these drugs would synergistically reduce neuropathic pain. METHODS Neuropathic pain was induced by L5 nerve ligation in Sprague-Dawley rats. To determine their ED(50) values, carbamazepine and pregabalin were orally administered at 0.3, 3, 10, or 30 mg kg(-1). The drugs were then co-administered at 0, 1/4×ED(50), 1/2×ED(50), 1.5×ED(50), and 2×ED(50) to determine the ED(50) and ED(75) values of the drugs in combination. Allodynia was determined using the von Frey hair test and dose-effect curves and isobolograms were used to investigate drug interactions. Levels of the acute reactive protein c-Fos in the dorsal horn were evaluated as an indicator of pathological nerve excitation. RESULTS At ED(50) levels, carbamazepine and pregabalin did not exhibit synergism, but doses higher than ED(75) were found to be synergistic. The combination index was 0.18 (strong synergy) and dose reductions were 35.7-fold for carbamazepine and 6.8-fold for pregabalin when co-administered when compared with a single administration at ED(75). The percentage allodynia relief was only 60% for carbamazepine and 80% for pregabalin by single administration, whereas their co-administration relieved allodynia by 100%. Furthermore, treatment decreased c-Fos expression in the dorsal horn, but expressional differences between animals treated with carbamazepine plus pregabalin were not significantly different from those treated with single drug. CONCLUSIONS Carbamazepine and pregabalin ameliorate neuropathic pain synergistically at higher doses.
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Affiliation(s)
- T S Hahm
- Department of Anaesthesiology and Pain Medicine, Samsung Medical Centre, Sungkyunkwan University School of Medicine, 50, Ilwon-Dong, Kangnam-Gu, Seoul, Republic of Korea
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Moon JI, Kwon CHD, Joh JW, Choi GS, Jung GO, Kim JM, Shin M, Choi SJ, Kim SJ, Lee SK. Primary versus salvage living donor liver transplantation for patients with hepatocellular carcinoma: impact of microvascular invasion on survival. Transplant Proc 2012; 44:487-93. [PMID: 22410053 DOI: 10.1016/j.transproceed.2011.11.009] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
OBJECTIVE Salvage liver transplantation (LT) has been proposed for patients with a small hepatocellular carcinoma (HCC) and preserved liver function. Few reports have been issued on salvage LT in a living-donor (LD) LT setting. Therefore, we performed this study to evaluate differences in tumor invasiveness and other risk factors on survival after salvage versus primary LDLT. METHODS Between September 1996 and December 2008, 324 patients with HCC underwent LT. We excluded 138 patient from the analysis, leaving 186 HCC patients for analysis, including 17 (9.1%) who had undergone earlier resection, the salvage LDLT cohort. The other 169 patients underwent primary LDLT. RESULTS Intrahepatic metastasis, Edmonson-Steiner histologic grade, microscopic vascular invasion, and preoperative serum alpha-fetoprotein levels significantly influenced tumor recurrence. Microscopic vascular invasion, intrahepatic metastasis, Edmonson-Steiner histologic grade, and treatment by salvage LDLT were significantly associated with poor patient survival univariate analysis. However, only microscopic vascular invasion was significant on multivariate analysis. The treatment modality (primary or salvage LDLT) was not observed to affect overall or disease-free survival significantly on multivariate analysis. Disease-free survival was significantly better in the primary than in the salvage LDLT group. Furthermore, patients in the primary LDLT group tended to show better survival. However, when stratified by the presence or absence of microscopic vascular invasion, no significant group difference was found for overall or disease-free survival among those without versus with microscopic vascular invasion. CONCLUSIONS Five-year overall survival after primary versus salvage LDLT were similar when differences in tumor pathologic features, such as microscopic vascular invasion, were taken into account. Multivariate analysis showed that the treatment itself was not a significant prognostic factor for survival.
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Affiliation(s)
- J I Moon
- Department of Surgery, Konyang University Hospital, Konyang University School of Medicine, Daejeon, Korea
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Lee YH, Bae SC, Choi SJ, Ji JD, Song GG. Associations between the p53 codon 72 polymorphisms and susceptibility to systemic lupus erythematosus and rheumatoid arthritis: a meta-analysis. Lupus 2012; 21:430-7. [DOI: 10.1177/0961203311434941] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Objective: The aim of this study was to determine whether the p53 codon 72 polymorphism confers susceptibility to systemic lupus erythematous (SLE) and rheumatoid arthritis (RA). Methods: A meta-analysis was conducted on the associations between the p53 codon 72 polymorphism and SLE or RA using: 1) allele contrast; 2) the recessive model; 3) the dominant model; and 4) the additive model. Results: A total of 10 studies, that is, 6 SLE and 4 RA studies, involving 1578 patients and 3138 controls were considered in the meta-analysis. Meta-analysis of the p53 codon 72 polymorphism showed no association between patients and the C allele (odds ratio (OR) = 0.834, 95% confidence interval (CI) = 0.599-1.161, p = 0.282), or between SLE and the p53 C allele (OR = 0.998, 95% CI = 0.765-1.302, p = 0.989). However, stratification by ethnicity showed an association between the p53 C allele and SLE in Asians (OR = 1.410, 95% CI = 1.044-1.906, p = 0.025), but not in Europeans (OR = 0.871, 95% CI = 0.625-1.214, p = 0.415). Furthermore, an association was found between the polymorphism and SLE in Asians using recessive and additive models. However, no association was found between RA and the p53 codon 72 polymorphism in all study subjects or in Europeans. Conclusions: This meta-analysis demonstrates that the p53 codon 72 polymorphism may confer susceptibility to SLE in Asians, but not in Europeans.
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Affiliation(s)
- YH Lee
- Division of Rheumatology, Department of Internal Medicine, Korea University College of Medicine, Korea; and 2The Hospital for Rheumatic Diseases, Hanyang University Medical Center, Korea
| | - S-C Bae
- Division of Rheumatology, Department of Internal Medicine, Korea University College of Medicine, Korea; and 2The Hospital for Rheumatic Diseases, Hanyang University Medical Center, Korea
| | - SJ Choi
- Division of Rheumatology, Department of Internal Medicine, Korea University College of Medicine, Korea; and 2The Hospital for Rheumatic Diseases, Hanyang University Medical Center, Korea
| | - JD Ji
- Division of Rheumatology, Department of Internal Medicine, Korea University College of Medicine, Korea; and 2The Hospital for Rheumatic Diseases, Hanyang University Medical Center, Korea
| | - GG Song
- Division of Rheumatology, Department of Internal Medicine, Korea University College of Medicine, Korea; and 2The Hospital for Rheumatic Diseases, Hanyang University Medical Center, Korea
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Lee KY, Jeon SY, Hong JW, Choi KW, Lee CY, Choi SJ, Kim JH, Song KH, Kim KH. Endothelin-1 enhances the proliferation of normal human melanocytes in a paradoxical manner from the TNF-α-inhibited condition, but tacrolimus promotes exclusively the cellular migration without proliferation: a proposed action mechanism for combination therapy of phototherapy and topical tacrolimus in vitiligo treatment. J Eur Acad Dermatol Venereol 2012; 27:609-16. [PMID: 22404745 DOI: 10.1111/j.1468-3083.2012.04498.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Vitiligo is an acquired pigmentary disorder caused by the destruction of melanocytes. Two of the major theories regarding the pathogenesis of vitiligo are the autoimmune theory and autocytotoxicity theory, but, the precise pathogenetic mechanism is still not clarified. OBJECTIVES We investigated the effects of ET-1, tacrolimus and tumour necrosis factor-α (TNF-α) on proliferation and migration of cultured normal human melanocytes (NHMs). We also sought to clarify the theoretical rationale underlying the topical tacrolimus monotherapy or tacrolimus-UV combination therapy as tools for vitiligo treatment. METHODS The effects of ET-1, tacrolimus and TNF-α on proliferation/migration of cultured NHMs were investigated by MTT assay/Boyden chamber transwell migration assay. We also examined roles of CXC-chemokine receptor II (CXCR II) and matrix metalloproteinases (MMPs) in such conditions. RESULTS ET-1 exerted a stimulatory effect on melanocyte proliferation and migration, but, tacrolimus exerted a stimulatory effect only on melanocyte migration higher than ET-1. TNF-α inhibited melanocyte proliferation in a dose-dependent manner. Paradoxically, TNF-α-pretreated NHMs exhibited an enhanced proliferative efficiency after being switched to ET-1. We found CXCRII was highly expressed in TNF-α-incubated melanocytes than the agents-free control, and ET-1 treatment after TNF-α preincubation showed the higher levels of CXCRII expression than the condition incubated with TNF-α alone. Moreover, the greater activities of MMP-2 and MMP-9 induced by tacrolimus than ET-1, reflected tacrolimus would enhance migration stimulatory effect in cultured NHMs. CONCLUSIONS Topical tacrolimus can be used an effective agent for vitiligo treatment as monotherapy, maybe due to its migration stimulatory action or TNF-α inhibitory property, and also as a component in combination therapy with UV treatment, considering the more upregulated MMPs activities are induced and the more effective migrations are feasible by itself than ET-1.
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Affiliation(s)
- K Y Lee
- Department of Dermatology, College of Medicine, Dong-A University, Busan, Korea
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Lee YH, Choi SJ, Ji JD, Song GG. Association between the valine/leucine247 polymorphism of β2-glycoprotein I and susceptibility to anti-phospholipid syndrome: a meta-analysis. Lupus 2012; 21:865-71. [DOI: 10.1177/0961203312440348] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [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
Objective: The objective of this paper is to explore whether the valine/leucine247 (Val/Leu247) polymorphism of β2-glycoprotein I (β2GPI) confers susceptibility to anti-phospholipid syndrome (APS) and thrombosis and predicts positivity for anti-β2GPI antibodies. Methods: A meta-analysis was conducted on the associations between the β2GPI Val/Leu247 polymorphism and susceptibility to APS and thrombosis and positivity for anti-β2GPI. Results: A total of 1507 patients with APS and 1450 controls in 12 comparative studies were included in this meta-analysis. Meta-analysis of the β2GPI Val/Leu247 polymorphism showed significant associations between the β2GPI Val allele and APS, thrombosis, and anti-β2GPI positivity (odds ratio (OR) 1.316, 95% confidence interval (CI) 1.068–1.621, p = 0.010; OR 1.908, 95% CI 1.195–3.046, p = 0.007; OR 1.630, 95% CI 1.018–2.609, p = 0.042, respectively). A direct comparison between anti-β2GPI-positive and -negative patients revealed that the frequency of the Val allele was significantly higher in anti-β2GPI-positive patents (OR 1.514, 95% CI 1.017–1.253, p = 0.041). Furthermore, a direct comparison between thrombosis-positive and -negative patients also indicated that the Val/Val + Val/Leu and the Val/Val vs. Leu/Leu genotypes of the β2GPI polymorphism were significantly elevated in patients with thrombosis (OR 2.817, 95% CI 1.200–6.610, p = 0.017; OR 3.312, 95% CI 1.338–8.200, p = 0.010, respectively). Conclusion: This meta-analysis shows that the β2GPI Val/Leu247 polymorphism is associated with susceptibility to APS and thrombosis and with anti-β2GPI positivity.
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Affiliation(s)
- YH Lee
- Division of Rheumatology, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
| | - SJ Choi
- Division of Rheumatology, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
| | - JD Ji
- Division of Rheumatology, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
| | - GG Song
- Division of Rheumatology, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
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Kim JY, Kim DH, Kim JH, Lee D, Jeon HB, Kwon SJ, Kim SM, Yoo YJ, Lee EH, Choi SJ, Seo SW, Lee JI, Na DL, Yang YS, Oh W, Chang JW. Soluble intracellular adhesion molecule-1 secreted by human umbilical cord blood-derived mesenchymal stem cell reduces amyloid-β plaques. Cell Death Differ 2011; 19:680-91. [PMID: 22015609 PMCID: PMC3307982 DOI: 10.1038/cdd.2011.140] [Citation(s) in RCA: 143] [Impact Index Per Article: 11.0] [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] [Indexed: 02/08/2023] Open
Abstract
Presently, co-culture of human umbilical cord blood mesenchymal stem cells (hUCB-MSCs) with BV2 microglia under amyloid-β42 (Aβ42) exposure induced a reduction of Aβ42 in the medium as well as an overexpression of the Aβ-degrading enzyme neprilysin (NEP) in microglia. Cytokine array examinations of co-cultured media revealed elevated release of soluble intracellular adhesion molecule-1 (sICAM-1) from hUCB-MSCs. Administration of human recombinant ICAM-1 in BV2 cells and wild-type mice brains induced NEP expression in time- and dose-dependent manners. In co-culturing with BV2 cells under Aβ42 exposure, knockdown of ICAM-1 expression on hUCB-MSCs by small interfering RNA (siRNA) abolished the induction of NEP in BV2 cells as well as reduction of added Aβ42 in the co-cultured media. By contrast, siRNA-mediated inhibition of the sICAM-1 receptor, lymphocyte function-associated antigen-1 (LFA-1), on BV2 cells reduced NEP expression by ICAM-1 exposure. When hUCB-MSCs were transplanted into the hippocampus of a 10-month-old transgenic mouse model of Alzheimer's disease for 10, 20, or 40 days, NEP expression was increased in the mice brains. Moreover, Aβ42 plaques in the hippocampus and other regions were decreased by active migration of hUCB-MSCs toward Aβ deposits. These data suggest that hUCB-MSC-derived sICAM-1 decreases Aβ plaques by inducing NEP expression in microglia through the sICAM-1/LFA-1 signaling pathway.
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Affiliation(s)
- J-Y Kim
- Biomedical Research Institute, MEDIPOST Co. Ltd., Seoul 137-874, Republic of Korea
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Abstract
The aim of this study was to determine whether the functional interleukin-6 (IL-6) promoter -174 G/C and -572 G/C polymorphisms confer susceptibility to systemic lupus erythematosus (SLE) in ethnically different populations. Meta-analysis was conducted on the associations between the IL-6 polymorphisms and SLE using; 1) allele contrast, 2) the recessive model, 3) the dominant model, and 4) the additive model. A total of 11 studies were considered in this study, and ethnicity-specific meta-analysis was performed on European and Asian populations. Meta-analysis of the IL-6 -174 G/C polymorphism showed an association between SLE and the IL-6 -174 G allele in all study subjects (odds ratio (OR) = 1.344, 95% confidence interval (CI) = 1.052-1.718, p = 0.018). Furthermore, stratification by ethnicity indicated an association between the IL-6 -174 G allele and SLE in Europeans (OR = 1.264, 95% CI = 1.037-1.541, p = 0.020). Meta-analysis of the IL-6 -572 G/C polymorphism revealed that an association was found between SLE and the IL-6 -572 G/C polymorphism using the recessive model, but ethnicity-specific meta-analysis revealed no association between SLE and the IL-6 -572 G/C polymorphism in Asians. In conclusion, this meta-analysis demonstrates that the IL-6 -174 G/C polymorphism may confer susceptibility to SLE in Europeans, but that the IL-6 -572 G/C polymorphism is not associated with susceptibility to SLE in Asians.
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Affiliation(s)
- Y H Lee
- Division of Rheumatology, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea.
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Baek M, Kim MK, Cho HJ, Lee JA, Yu J, Chung HE, Choi SJ. Factors influencing the cytotoxicity of zinc oxide nanoparticles: particle size and surface charge. ACTA ACUST UNITED AC 2011. [DOI: 10.1088/1742-6596/304/1/012044] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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Lee YH, Lee HS, Choi SJ, Dai Ji J, Song GG. Efficacy and safety of tacrolimus therapy for lupus nephritis: a systematic review of clinical trials. Lupus 2011; 20:636-40. [PMID: 21382917 DOI: 10.1177/0961203310389486] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The aim of this study was to assess the efficacy and safety of tacrolimus for the treatment of lupus nephritis (LN). A systematic review of clinical trials on tacrolimus in LN was conducted. Seven studies met the review inclusion criteria. Two studies were case-control studies, and five studies were open-label trials. One randomized controlled trial (RCT) found that tacrolimus significantly improved lupus nephritis disease activity index (LNDAI) as compared with a placebo, but no difference was observed between these two groups in terms of treatment-related adverse events. The other case-control study compared tacrolimus with standard protocols of oral cyclophosphamide or azathioprine for the treatment of membranous LN and found that efficacies were similar. All five open-label prospective studies concluded that tacrolimus is safe and effective as an induction and maintenance therapy for LN or for the treatment of LN with persistent proteinuria that failed to respond to prednisolone and immunosuppressants. In conclusion, this systematic review shows that tacrolimus may be effective as an induction and maintenance therapy for LN or as a treatment for LN with persistent proteinuria despite gold standard treatment. However, further RCTs are needed to compare tacrolimus with standard regimens for the treatment of LN.
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Affiliation(s)
- Y H Lee
- Division of Rheumatology, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea.
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Yim YS, Noh YH, Kim DH, Lee MW, Cheuh HW, Lee SH, Yoo KH, Jung HL, Sung KW, Choi SJ, Oh WI, Yang YS, Koo HH. Correlation between the immature characteristics of umbilical cord blood-derived mesenchymal stem cells and engraftment of hematopoietic stem cells in NOD/SCID mice. Transplant Proc 2011; 42:2753-8. [PMID: 20832581 DOI: 10.1016/j.transproceed.2010.05.146] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2009] [Revised: 02/09/2010] [Accepted: 05/12/2010] [Indexed: 12/26/2022]
Abstract
Umbilical cord blood (UCB)-derived mesenchymal stem cells (MSC) facilitate the engraftment of human (h) hematopoietic stem cells when transplanted simultaneously in animal and human studies. However, the type of MSCs that preferentially enhance the engraftment of HSCs is unknown. Recent studies have shown that MSCs derived from a single source are heterogeneous in terms of cell size, morphology, proliferation rate, and differentiation potential. This study was designed to investigate the properties of UCB-MSCs, which influence the engraftment of hHSCs in a NOD/SCID mouse model. We categorized MSCs as being the most effective (UCB-352 MSCs) or the least effective (UCB-156 MSCs) at promoting the homing and engraftment of HSCs, and compared the characteristics of these 2 MSC populations. We observed that the 2 populations showed differences in characteristics typical of immature MSCs, and related to proliferation potential. We showed that UCB-352 MSCs, which proliferate quickly, preferentially enhanced the engraftment of HSCs in NOD/SCID mice. In addition, we observed differences in the pattern of both PODXL and Oct4 expression, and in the levels of cytokines such as SDF-1 and SCF using flow cytometry and membrane arrays. The more effective UCB-352 MSCs expressed higher levels of PODXL and Oct4, which were associated with immaturity, than did the UCB-156 MSCs. Furthermore, UCB-352 cells secreted greater levels of SDF-1 and SCF, both of which are required for hematopoiesis. We propose that the proliferation potential of UCB-MSCs, coupled with their immature characteristics, may serve as a novel standard to promote the homing and engraftment of HSCs.
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Affiliation(s)
- Y S Yim
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Kim YJ, Choi SJ, Bae H, Kim CW. Sludge settleability detection using automated SV30 measurement and its application to a field WWTP. Water Sci Technol 2011; 64:1743-1749. [PMID: 22335120 DOI: 10.2166/wst.2011.078] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The need for automation & measurement technologies to detect the process state has been a driving force in the development of various measurements at wastewater treatment plants. While the number of applications of automation & measurement technologies to the field is increasing, there have only been a few cases where they have been applied to the area of sludge settling. This is because it is not easy to develop an automated operation support system for the detection of sludge settleability due to its site-specific characteristics. To automate the human operator's daily test and diagnosis works on sludge settling, an on-line SV30 measurement was developed and an automated detection algorithm on settleability was developed that imitated heuristics to detect settleability faults. The automated SV30 measurement is based on automatic pumping with a predefined schedule, the image capture of the settling test with a digital camera, and an analysis of the images to detect the settled sludge height. A sludge settleability detection method was developed and its applicability was investigated by field application.
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Affiliation(s)
- Y J Kim
- Department of Civil and Environmental Engineering, Pusan National University, Busan, 609-735, Korea
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Choi SJ, Song IS, Feng JQ, Gao T, Haruyama N, Gautam P, Robey PG, Hart TC. Mutant DLX 3 disrupts odontoblast polarization and dentin formation. Dev Biol 2010; 344:682-92. [PMID: 20510228 DOI: 10.1016/j.ydbio.2010.05.499] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2009] [Revised: 05/17/2010] [Accepted: 05/19/2010] [Indexed: 11/30/2022]
Abstract
Tricho-dento-osseous (TDO) syndrome is an autosomal dominant disorder characterized by abnormalities in the thickness and density of bones and teeth. A 4-bp deletion mutation in the Distal-Less 3 (DLX3) gene is etiologic for most cases of TDO. To investigate the in vivo role of mutant DLX3 (MT-DLX3) on dentin development, we generated transgenic (TG) mice expressing MT-DLX3 driven by a mouse 2.3 Col1A1 promoter. Dentin defects were radiographically evident in all teeth and the size of the nonmineralized pulp was enlarged in TG mice, consistent with clinical characteristics in patients with TDO. High-resolution radiography, microcomputed tomography, and SEM revealed a reduced zone of mineralized dentin with anomalies in the number and organization of dentinal tubules in MT-DLX3 TG mice. Histological and immunohistochemical studies demonstrated that the decreased dentin was accompanied by altered odontoblast cytology that included disruption of odontoblast polarization and reduced numbers of odontoblasts. TUNEL assays indicated enhanced odontoblast apoptosis. Expression levels of the apoptotic marker caspase-3 were increased in odontoblasts in TG mice as well as in odontoblastic-like MDPC-23 cells transfected with MT-DLX3 cDNA. Expression of Runx2, Wnt 10A, and TBC1D19 colocalized with DLX3 expression in odontoblasts, and MT-DLX3 significantly reduced expression of all three genes. TBC1D19 functions in cell polarity and decreased TBC1D19 expression may contribute to the observed disruption of odontoblast polarity and apoptosis. These data indicate that MT-DLX3 acts to disrupt odontoblast cytodifferentiation leading to odontoblast apoptosis, and aberrations of dentin tubule formation and dentin matrix production, resulting in decreased dentin and taurodontism. In summary, this TG model demonstrates that MT-DLX3 has differential effects on matrix production and mineralization in dentin and bone and provides a novel tool for the investigation of odontoblast biology.
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Affiliation(s)
- S J Choi
- Craniofacial and Skeletal Diseases Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
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Lee YH, Woo JH, Choi SJ, Ji JD, Bae SC, Song GG. Tacrolimus for the treatment of active rheumatoid arthritis: a systematic review and meta-analysis of randomized controlled trials. Scand J Rheumatol 2010; 39:271-8. [DOI: 10.3109/03009740903501642] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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