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Lee KW, Seo DK, Bae JY, Ra HJ, Choi SJ, Kim JK. Usefulness of three-dimensional computed tomography for patellofemoral measurement. Knee Surg Sports Traumatol Arthrosc 2022; 30:1423-1429. [PMID: 34061208 DOI: 10.1007/s00167-021-06624-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Accepted: 05/25/2021] [Indexed: 11/27/2022]
Abstract
PURPOSE This study aimed to establish the normal values for knee patellofemoral alignment as measured using 3-dimensional computed tomography (3D CT), to standardize the technique, and to show the inter- and intra-observer reliability of this measurement. METHODS The present study included 62 asymptomatic volunteers (124 knees). 3D CT scanning was performed with each volunteer in the supine position with 15° of knee flexion, and consistent 3D axial images of the patellofemoral joint were obtained with alignment in the desired stereographic baseline direction in anterior-posterior, lateral, and axial rotations. Two independent observers measured patellofemoral alignment parameters, including the sulcus angle, congruence angle, lateral patellofemoral angle, condyle-patellar angle, and lateral trochlear inclination angle. RESULTS Based on 3D CT measurement, the mean values of the parameters were 145.9° ± 9.2° for the sulcus angle, 12.6° ± 22.6° for the congruence angle, 9.2° ± 4.6° for the lateral patellofemoral angle, 14.1° ± 6.4° for the condyle-patellar (lateral facets) angle, - 8.5° ± 8.4° for condyle-patellar (patellar axis) angle, and 16.5° ± 6.3° for the lateral trochlear inclination angle. A statistically significant difference was observed between men and women in the sulcus and condyle-patellar (patellar axis) angles (p = 0.045, 0.011, respectively). All parameters showed excellent inter- and intra-observer reliability. CONCLUSION The normal values and ranges for patellofemoral alignment parameters were evaluated using 3D CT. The results of this study provide reference information that may facilitate diagnosis and treatment planning of patellofemoral disorders in skeletally mature non-pathologic patients. LEVEL OF EVIDENCE II.
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Affiliation(s)
- Ki Won Lee
- Department of Orthopedic Surgery, College of Medicine, Asan Foundation, Gangneung Asan Hospital, University of Ulsan, 38, Bangdong-gil, Sacheon-Myeon, Gangneung-si, Gangwon-do, 25440, South Korea
| | - Dong-Kyo Seo
- Department of Orthopedic Surgery, College of Medicine, Asan Foundation, Gangneung Asan Hospital, University of Ulsan, 38, Bangdong-gil, Sacheon-Myeon, Gangneung-si, Gangwon-do, 25440, South Korea.
| | - Joo-Yul Bae
- Department of Orthopedic Surgery, College of Medicine, Asan Foundation, Gangneung Asan Hospital, University of Ulsan, 38, Bangdong-gil, Sacheon-Myeon, Gangneung-si, Gangwon-do, 25440, South Korea
| | - Ho Jong Ra
- Department of Orthopedic Surgery, College of Medicine, Asan Foundation, Gangneung Asan Hospital, University of Ulsan, 38, Bangdong-gil, Sacheon-Myeon, Gangneung-si, Gangwon-do, 25440, South Korea
| | - Soo-Jung Choi
- Department of Radiology, College of Medicine, Asan Foundation, Gangneung Asan Hospital, University of Ulsan, 38, Bangdong-gil, Sacheon-Myeon, Gangneung-si, Gangwon-do, 25440, South Korea
| | - Jin Kyung Kim
- Department of Orthopedic Surgery, College of Medicine, Asan Foundation, Gangneung Asan Hospital, University of Ulsan, 38, Bangdong-gil, Sacheon-Myeon, Gangneung-si, Gangwon-do, 25440, South Korea
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Yeom JW, Koh KH, Park MJ, Choi SJ, Lee KW, Lee HI. Modified Staged Finkelstein Test for the Identification of Intracompartmental Septum in Patients with De Quervain's Disease. J Hand Surg Asian Pac Vol 2021; 26:555-562. [PMID: 34789101 DOI: 10.1142/s2424835521500521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Background: The intracompartmental septum isolating the extensor pollicis brevis (EPB) has been reported to affect the patient's response to nonsurgical treatment in de Quervain's disease. A simple physical test called the modified staged Finkelstein test was developed to evaluate the septum; the result of this test was compared with those of the pre-existing physical test (EPB entrapment test) and ultrasonographic (US) examination of the septum. Methods: We retrospectively analyzed 52 patients who underwent two clinical tests, including the modified staged Finkelstein test and the EPB entrapment test, and US examination for de Quervain's disease. The correlation between the clinical test results and US findings was evaluated; sensitivity, specificity, and positive and negative predictive values were calculated. Results: The proportion of wrists with a separate septum was 50% (26 patients) in the US examination. The sensitivity and specificity of the modified staged Finkelstein test were 88.5% and 73.1%, respectively; those of EPB entrapment test were 71.4% and 84.2%, respectively. The positive and negative predictive values of the modified staged Finkelstein test were 76.7% and 86.4%, respectively. Conclusions: The modified staged Finkelstein test showed acceptable diagnostic values for the diagnosis of septum compared with pre-existing physical tests. Knowledge about the existence of septum could be helpful in treating patients and expecting prognosis.
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Affiliation(s)
- Ji Woong Yeom
- Department of Orthopedic Surgery, Asan Hospital, Seoul, Korea
| | - Kyoung Hwan Koh
- Department of Orthopedic Surgery, Asan Hospital, Ulsan University, Seoul, Korea
| | - Min Jong Park
- Department of Orthopedic Surgery, Samsung Medical Center, Seoul, Korea
| | - Soo-Jung Choi
- Departments of Radiology, Gangneung Asan Hospital, Ulsan University, Gangneung, Korea
| | - Ki Won Lee
- Departments of Orthopedic Surgery, Gangneung Asan Hospital, Ulsan University, Gangneung, Korea
| | - Hyun Il Lee
- Department of Orthopedic Surgery, Ilsan Paik Hospital, Inje University, Goyang, Korea
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Choi SJ. [Adhesive Capsulitis of the Shoulder]. Taehan Yongsang Uihakhoe Chi 2021; 82:1355-1365. [PMID: 36238892 PMCID: PMC9431985 DOI: 10.3348/jksr.2021.0131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Revised: 07/23/2021] [Accepted: 11/22/2021] [Indexed: 06/16/2023]
Abstract
Adhesive capsulitis, the so-called 'frozen shoulder', is one of the common causes of pain with a limited range of motion in the shoulder joint. The condition is usually diagnosed through the clinical course and physical examinations; however, several studies on imaging findings of adhesive capsulitis using sonography, MRI, and MR angiography have been reported. In this article, various imaging findings for the diagnosis of adhesive capsulitis-related anatomy are reviewed.
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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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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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Rho T, Choi SJ, Kil HW, Ko J, Yoon KD. Separation of nine novel triterpene saponins from Camellia japonica seeds using high-performance countercurrent chromatography and reversed-phase high-performance liquid chromatography. Phytochem Anal 2019; 30:226-236. [PMID: 30479045 DOI: 10.1002/pca.2808] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Revised: 10/15/2018] [Accepted: 10/30/2018] [Indexed: 06/09/2023]
Abstract
INTRODUCTION Camellia japonica L. (Theaceae) is an evergreen shrub, which is cultivated as a popular ornamental tree in Korea, China, and Japan and its seeds have been used as a source of cooking oil, in cosmetics and as a traditional medicine. Intensive phytochemical works have revealed that oleanane-type saponins are the characteristic compounds of the seeds of C. japonica. OBJECTIVE The purpose of the present study is to isolate and determine oleanane-type saponins from C. japonica using high-performance countercurrent chromatography (HPCCC) coupled with reversed-phase high-performance liquid chromatography (RP-HPLC) and spectroscopic evidences, respectively. METHODOLOGY HPLC electrospray ionisation quadrupole time-of-flight mass spectrometry (ESI-Q-TOF-MS) was applied to profile the saponin composition of an enriched saponin extract of C. japonica seeds. The enriched saponin extract was separated by HPCCC using a dichloromethane/methanol/isopropanol/water (9:6:1:4, v/v/v/v) system and RP-HPLC. The structures of the isolates were determined utilising ESI-Q-TOF-MS, one-dimensional and two-dimensional NMR and optical rotation. RESULTS HPCCC on enriched saponin extract of C. japonica yielded four saponin fractions in the order of the number of sugars attached to the triterpene aglycone, and preparative RP-HPLC on each saponin fraction led to the isolation of nine novel saponins, namely camoreoside A-I, along with six known ones. CONCLUSIONS This study indicates that combination of HPLC-ESI-Q-TOF-MS analysis and HPCCC coupled with RP-HPLC are excellent tools for discovering saponins from natural sources.
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Affiliation(s)
- Taewoong Rho
- College of Pharmacy and Integrated Research Institute of Pharmaceutical Science, The Catholic University of Korea, Bucheon, Gyeonggi Province, Republic of Korea
| | - Soo-Jung Choi
- College of Pharmacy and Integrated Research Institute of Pharmaceutical Science, The Catholic University of Korea, Bucheon, Gyeonggi Province, Republic of Korea
| | - Hyun Woo Kil
- College of Pharmacy and Integrated Research Institute of Pharmaceutical Science, The Catholic University of Korea, Bucheon, Gyeonggi Province, Republic of Korea
| | - Jaeyoung Ko
- Amorepacific R&D Unit, Yongin, Gyeonggi Province, Republic of Korea
| | - Kee Dong Yoon
- College of Pharmacy and Integrated Research Institute of Pharmaceutical Science, The Catholic University of Korea, Bucheon, Gyeonggi Province, 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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11
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Bing JH, Choi SJ, Jung SM, Ryu DS, Ahn JH, Kang CH, Shin DR. Ultrasound-guided steroid injection for the treatment of de Quervain's disease: an anatomy-based approach. Skeletal Radiol 2018; 47:1483-1490. [PMID: 29730702 DOI: 10.1007/s00256-018-2958-9] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Revised: 03/04/2018] [Accepted: 04/23/2018] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To suggest different ultrasound-guided steroid injection (USI) techniques based on anatomical variations of the first extensor compartment (FEC), and to evaluate the usefulness of it, in patients with de Quervain's disease. MATERIALS AND METHODS Twenty-eight patients who underwent USI for de Quervain's disease were included. Anatomical variations were classified into complete sub-compartmentalization (n = 11), distal incomplete sub-compartmentalization (n = 5), and no sub-compartmentalization (n = 12) on ultrasound. Involved sub-compartments were recorded in patients with complete sub-compartmentalization. USIs were performed based on the anatomical variations: in both sub-compartments (n = 2) or only in the affected sub-compartment (n = 9) depending on the location of tenosynovitis involvement, in patients with complete sub-compartmentalization; in proximal FEC in patients with distal incomplete sub-compartmentalization (n = 5); in the common compartment in patients with no sub-compartmentalization (n = 12). Medical charts were retrospectively reviewed for evaluation of clinical outcome at follow-up visits. RESULTS Twenty-three out of 28 patients were followed up with a mean period of 31.2 days after injection (6~87 days). Mean VAS was 7.96 before injection (range: 4 to 10), which was significantly reduced to 0.65 at rest and 1.57 during activity at follow-up visits (p < 0.05). Twenty-two out of 23 patients were satisfied with the results. The mean proportion of subjective pain reduction was 82.0% (median 95%). CONCLUSION Ultrasound-guided steroid injections using different injection techniques based on the anatomical variations of the FEC have shown to be beneficial in the management of de Quervain's disease.
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Affiliation(s)
- Jong-Hyun Bing
- Department of Radiology, Asan Foundation, Gangneung Asan Hospital, University of Ulsan, College of Medicine, 38, Bangdong-gil, Sacheon-myeon, Gangneung-si, Gangwon-do, 25440, Republic of Korea
| | - Soo-Jung Choi
- Department of Radiology, Asan Foundation, Gangneung Asan Hospital, University of Ulsan, College of Medicine, 38, Bangdong-gil, Sacheon-myeon, Gangneung-si, Gangwon-do, 25440, Republic of Korea.
| | - Seung-Moon Jung
- Department of Radiology, Asan Foundation, Gangneung Asan Hospital, University of Ulsan, College of Medicine, 38, Bangdong-gil, Sacheon-myeon, Gangneung-si, Gangwon-do, 25440, Republic of Korea
| | - Dae-Shick Ryu
- Department of Radiology, Asan Foundation, Gangneung Asan Hospital, University of Ulsan, College of Medicine, 38, Bangdong-gil, Sacheon-myeon, Gangneung-si, Gangwon-do, 25440, Republic of Korea
| | - Jae-Hong Ahn
- Department of Radiology, Asan Foundation, Gangneung Asan Hospital, University of Ulsan, College of Medicine, 38, Bangdong-gil, Sacheon-myeon, Gangneung-si, Gangwon-do, 25440, Republic of Korea
| | - Chae-Hoon Kang
- Department of Radiology, Asan Foundation, Gangneung Asan Hospital, University of Ulsan, College of Medicine, 38, Bangdong-gil, Sacheon-myeon, Gangneung-si, Gangwon-do, 25440, Republic of Korea
| | - Dong-Rock Shin
- Department of Radiology, Asan Foundation, Gangneung Asan Hospital, University of Ulsan, College of Medicine, 38, Bangdong-gil, Sacheon-myeon, Gangneung-si, Gangwon-do, 25440, Republic of Korea
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12
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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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13
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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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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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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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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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17
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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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Lee RW, Choi SJ, Lee MH, Ahn JH, Shin DR, Kang CH, Lee KW. Diagnostic accuracy of 3T conventional shoulder MRI in the detection of the long head of the biceps tendon tears associated with rotator cuff tendon tears. Skeletal Radiol 2016; 45:1705-1715. [PMID: 27717975 DOI: 10.1007/s00256-016-2501-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [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: 07/21/2016] [Revised: 08/28/2016] [Accepted: 09/23/2016] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To evaluate the diagnostic performance (DP) of 3T (3 Tesla field strength) conventional shoulder magnetic resonance imaging (MRI) in detecting the long head of the biceps tendon (LHBT) tears in association with rotator cuff tendon tears. MATERIALS AND METHODS This study included 80 consecutive patients who underwent arthroscopic surgery for rotator cuff tendon tears. Two radiologists independently evaluated the preoperative 3T shoulder MRI for the presence of LHBT tears. The DP of MRI was evaluated using the results of arthroscopy as the reference standard. We also evaluated the DP of several MR signs of LHBT in detection of partial LHBT tears. RESULTS Arthroscopic examination revealed 35 partial and 5 complete tears. According to the results of evaluation by reviewers 1 and 2, shoulder MRI exhibited sensitivities of 77.14 and 80 % and specificities of 71.11 and 73.33 % in detection of partial LHBT tears and sensitivities of 80 and 100 % and a specificity of 100% (both) in detection of complete LHBT tears. In detecting partial LHBT tears, increased T2 signal intensity of the LHBT exhibited high sensitivities (reviewers 1 and 2; 82.85 and 80 %, respectively) and the presence of intratendinous defects or C-signs exhibited the highest specificities (reviewers 1 and 2; 95.55 and 93.33 %, respectively), followed by abnormalities in shape and outer margins of the LHBT (reviewers 1 and 2; 91.11 and 82 %; 91.11 and 86.66 %, respectively). CONCLUSION Non-contrast-enhanced 3T shoulder MRI is potentially highly accurate in detection of complete LHBT tears, but moderately accurate in detection of partial LHBT tears.
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Affiliation(s)
- Ro Woon Lee
- Department of Radiology, Asan Foundation, Gangneung Asan Hospital, University of Ulsan, College of Medicine, 38, Bangdong-gil, Sacheon-Myeon, Gangneung-si, Gangwon-do, 25440, South Korea
| | - Soo-Jung Choi
- Department of Radiology, Asan Foundation, Gangneung Asan Hospital, University of Ulsan, College of Medicine, 38, Bangdong-gil, Sacheon-Myeon, Gangneung-si, Gangwon-do, 25440, South Korea.
| | - Man Ho Lee
- Department of Radiology, Andong Medical Center, 55, Taesa 2-gil, Andong-si, Gyeongsangbuk-do, 36694, South Korea
| | - Jae Hong Ahn
- Department of Radiology, Asan Foundation, Gangneung Asan Hospital, University of Ulsan, College of Medicine, 38, Bangdong-gil, Sacheon-Myeon, Gangneung-si, Gangwon-do, 25440, South Korea
| | - Dong Rock Shin
- Department of Radiology, Asan Foundation, Gangneung Asan Hospital, University of Ulsan, College of Medicine, 38, Bangdong-gil, Sacheon-Myeon, Gangneung-si, Gangwon-do, 25440, South Korea
| | - Chae Hoon Kang
- Department of Radiology, Asan Foundation, Gangneung Asan Hospital, University of Ulsan, College of Medicine, 38, Bangdong-gil, Sacheon-Myeon, Gangneung-si, Gangwon-do, 25440, South Korea
| | - Ki Won Lee
- Department of Orthopedic Surgery, Asan Foundation, Gangneung Asan Hospital, University of Ulsan, College of Medicine, 38, Bangdong-gil, Sacheon-Myeon, Gangneung-si, Gangwon-do, 25440, South Korea
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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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Ahn JH, Kang CH, Choi SJ, Park MS, Jung SM, Ryu DS, Shin DR. CT Findings of Foreign Body Reaction to a Retained Endoloop Ligature Plastic Tube Mimicking Acute Appendicitis: A Case Report. Korean J Radiol 2016; 17:541-4. [PMID: 27390545 PMCID: PMC4936176 DOI: 10.3348/kjr.2016.17.4.541] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Accepted: 04/11/2016] [Indexed: 12/02/2022] Open
Abstract
Many hospitals experience one or more retained surgical instrument events with risk of patient morbidity and medicolegal problems. Identification of retained surgical instrument is important. The radiologists should be familiar with imaging finding of retained surgical instrument. In a 62-year-old female with a retained plastic tube, localized peritoneal infiltration around air-containing tubular structure mimicked acute appendicitis on abdomen computed tomography (CT), one year after laparoscopic cholecystectomy. We reported CT findings of foreign body reaction related to retained Endoloop ligature plastic tube mimicking acute appendicitis.
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Affiliation(s)
- Jae Hong Ahn
- Department of Radiology, Asan Foundation, GangNeung Asan Hospital, University of Ulsan College of Medicine, Gangneung 25440, Korea
| | - Chae Hoon Kang
- Department of Radiology, Asan Foundation, GangNeung Asan Hospital, University of Ulsan College of Medicine, Gangneung 25440, Korea
| | - Soo-Jung Choi
- Department of Radiology, Asan Foundation, GangNeung Asan Hospital, University of Ulsan College of Medicine, Gangneung 25440, Korea
| | - Man Soo Park
- Department of Radiology, Asan Foundation, GangNeung Asan Hospital, University of Ulsan College of Medicine, Gangneung 25440, Korea
| | - Seung Mun Jung
- Department of Radiology, Asan Foundation, GangNeung Asan Hospital, University of Ulsan College of Medicine, Gangneung 25440, Korea
| | - Dae Shick Ryu
- Department of Radiology, Asan Foundation, GangNeung Asan Hospital, University of Ulsan College of Medicine, Gangneung 25440, Korea
| | - Dong Rock Shin
- Department of Radiology, Asan Foundation, GangNeung Asan Hospital, University of Ulsan College of Medicine, Gangneung 25440, Korea
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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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Ahn JH, Eom DW, Ryu DS, Park MS, Jung SM, Choi KM, Cheon GJ, Choi SJ, Jang HJ. Synchronous multicentric small hepatocellular carcinomas: defining the capsule on high-frequency intraoperative ultrasonography with pathologic correlation. Ultrasonography 2016; 35:335-44. [PMID: 27184653 PMCID: PMC5040137 DOI: 10.14366/usg.16001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Revised: 04/07/2016] [Accepted: 04/09/2016] [Indexed: 11/03/2022] Open
Abstract
PURPOSE The aim of this study was to define the capsules of synchronous multicentric small hepatocellular carcinomas (HCCs) with use of high-frequency intraoperative ultrasonography (IOUS). METHODS Among the 131 consecutive patients undergoing hepatic resection and high-frequency IOUS for HCC, 16 synchronous multicentric small HCCs in 13 patients were histologically diagnosed in the resected specimens. High-frequency IOUS and pathologic findings of these lesions were compared, with particular focus on the presence and appearance of the capsule in or around each lesion. RESULTS Synchronous multicentric small HCCs were pathologically classified into distinctly nodular (n=12) or vaguely nodular (n=4) types. All 12 distinctly nodular HCCs including six subcentimeter lesions showed detectable capsules on high-frequency IOUS and pathology. The capsules appeared as a hypoechoic rim containing hyperechoic foci (n=6), hypoechoic rim (n=5), or hyperechoic rim (n=1) with varying degrees of coverage around each lesion. Histologically, the capsules were composed of a combination of one to four layers consisting of a fibrous capsule, peritumoral fibrosis, prominent small vessels, and entrapped hepatic parenchyma. CONCLUSION Synchronous multicentric small HCCs with distinctly nodular type, even at subcentimeter size, can show capsules with varying coverage and diverse echogenicity on high-frequency IOUS.
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Affiliation(s)
- Jae Hong Ahn
- Department of Radiology, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Korea
| | - Dae-Woon Eom
- Department of Pathology, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Korea
| | - Dae Shick Ryu
- Department of Radiology, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Korea
| | - Man Soo Park
- Department of Radiology, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Korea
| | - Seung Mun Jung
- Department of Radiology, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Korea
| | - Kun Moo Choi
- Department of Surgery, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Korea
| | - Gab Jin Cheon
- Department of Hepatology, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Korea
| | - Soo-Jung Choi
- Department of Radiology, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Korea
| | - Hyuk Jai Jang
- Department of Surgery, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, 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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Gu BS, Choi SJ, Yoo B, Han KH, Park JK, Lee YS, Park JH. An Incidental Finding of a Radiopaque Pill following Cervical Spinal Surgery in a Parkinson's Disease Patient. Korean J Spine 2015; 12:153-5. [PMID: 26512272 PMCID: PMC4623172 DOI: 10.14245/kjs.2015.12.3.153] [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] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 07/24/2015] [Accepted: 07/28/2015] [Indexed: 01/26/2023]
Abstract
There are previous reports of the identification of radiopaque medications on abdominal X-rays or computed tomography (CT). We describe an interesting case of the incidental identification of a radiopaque medication on cervical spinal CT following cervical spinal surgery. A sixty seven-year-old male patient with Parkinson's disease (PD) visited our emergency center with a C5-6 dislocation and fracture. Surgery was performed with open reduction and pedicle screw fixation through the posterior approach. No abnormal events occurred during the perioperative period. However, a radiopaque incidental foreign body in front of the C6 vertebrae was found on a cervical spinal CT and X-rays that were performed as routine examinations on postoperative day 3. After 6 hours, we performed gastrofibroscopy (GFS) but were unable to find anything. Therefore, we checked all of his medications related to the neck and check X-ray again. One enteric-coated pill he had taken exhibited strong radiodensity. Although our patient underwent an unnecessary GFS, every spinal surgeon should keep in mind that radiopaque pills can appear similar to spinal instruments on X-ray and CT. In addition, we should also know the associated dysphagia is a possible cause of the delayed passage of medicine in PD with or without cervical osteophytes.
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Affiliation(s)
- Bon Sub Gu
- Department of Neurological Surgery, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangwon-do, Korea
| | - Soo-Jung Choi
- Department of Radiology, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangwon-do, Korea
| | - Byoungwoo Yoo
- Department of Anesthesiology, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangwon-do, Korea
| | - Koon Hee Han
- Department of Internal Medicine, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangwon-do, Korea
| | - Jong Kyu Park
- Department of Internal Medicine, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangwon-do, Korea
| | - Young-Seok Lee
- Department of Neurological Surgery, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangwon-do, Korea
| | - Jin Hoon Park
- Department of Neurological Surgery, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangwon-do, Korea
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Hwang TY, Kim JY, Sung NJ, Choi SJ. P3‐270: A provincial population‐based survey on attitudes toward will and testamentary capacity of individuals with dementia. Alzheimers Dement 2015. [DOI: 10.1016/j.jalz.2015.06.1643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Tae-Young Hwang
- Jeonbuk Provincial Maeumsarang HospitalJeonjuSouth Korea
- Jeonbuk Dementia CenterJeonjuSouth Korea
| | - Jung-Young Kim
- Jeonbuk Provincial Maeumsarang HospitalJeonjuSouth Korea
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Abstract
Here, we describe a popliteal mass that was initially misdiagnosed as a simple popliteal cyst, which finally turned out to be osteochondrolipoma. A 63-year-old housewife presented with sustained knee pain in association with a palpable mass on the popliteal fossa. The mass was in the posteromedial area and soft, non-tender, non-movable in the posteromedial area. Using plain radiography, the mass appeared as a round, soft tissue density lesion containing bony fragments. We performed an ultrasound-guided needle biopsy in conjunction with magnetic resonance imaging, followed by an open excisional biopsy. Microscopically, histological sections showed a lipoma with cartilaginous and osseous differentiation, finally diagnosed as osteochondrolipoma. In conclusion, popliteal masses are not always simple cysts, and the evaluation of masses in the popliteal fossa is always necessary.
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Affiliation(s)
- Young-Joon Choi
- Department of Orthopaedic Surgery, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Korea
| | - Jeong-Ho Kang
- Department of Orthopaedic Surgery, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Korea
| | - Gil-Hyun Kang
- Department of Pathology, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Korea
| | - Soo-Jung Choi
- Department of Radiology, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, 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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Choi SJ, Choi J, Lee CU, Yoon SH, Bae SK, Chin YW, Kim J, Yoon KD. Rapid separation of cyanidin-3-glucoside and cyanidin-3-rutinoside from crude mulberry extract using high-performance countercurrent chromatography and establishment of a volumetric scale-up process. J Sep Sci 2015; 38:1828-36. [DOI: 10.1002/jssc.201500076] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Revised: 03/10/2015] [Accepted: 03/10/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Soo-Jung Choi
- College of Pharmacy and Integrated Research Institute of Pharmaceutical Sciences; The Catholic University of Korea; Bucheon Republic of Korea
| | - Janggyoo Choi
- College of Pharmacy and Research Institute of Pharmaceutical Science; Seoul National University; Seoul Republic of Korea
| | - Chang Uk Lee
- College of Medicine; The Catholic University of Korea; Seoul Republic of Korea
| | - Shin Hee Yoon
- College of Medicine; The Catholic University of Korea; Seoul Republic of Korea
| | - Soo Kyung Bae
- College of Pharmacy and Integrated Research Institute of Pharmaceutical Sciences; The Catholic University of Korea; Bucheon Republic of Korea
| | - Young-Won Chin
- College of Pharmacy and BK21 PLUS R-FIND Team; Dongguk University-Seoul; 32 Dongguk-lo, Ilsandong-gu Goyang Gyeonggi-do Republic of Korea
| | - Jinwoong Kim
- College of Pharmacy and Research Institute of Pharmaceutical Science; Seoul National University; Seoul Republic of Korea
| | - Kee Dong Yoon
- College of Pharmacy and Integrated Research Institute of Pharmaceutical Sciences; The Catholic University of Korea; Bucheon Republic of 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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Choi SJ, Ahn JH, Ryu DS, Kang CH, Jung SM, Park MS, Shin DR. Ultrasonography for nerve compression syndromes of the upper extremity. Ultrasonography 2015; 34:275-91. [PMID: 25682987 PMCID: PMC4603206 DOI: 10.14366/usg.14060] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Revised: 01/12/2015] [Accepted: 01/13/2015] [Indexed: 01/21/2023] Open
Abstract
Nerve compression syndromes commonly involve the nerves in the upper extremity. High-resolution ultrasonography (US) can satisfactorily assess these nerves and may detect the morphological changes of the nerves. US can also reveal the causes of nerve compression when structural abnormalities or space-occupying lesions are present. The most common US finding of compression neuropathy is nerve swelling proximal to the compression site. This article reviews the normal anatomic location and US appearances of the median, ulnar, and radial nerves. Common nerve compression syndromes in the upper extremity and their US findings are also reviewed.
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Affiliation(s)
- Soo-Jung Choi
- Department of Radiology, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Korea
| | - Jae Hong Ahn
- Department of Radiology, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Korea
| | - Dae Shik Ryu
- Department of Radiology, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Korea
| | - Chae Hoon Kang
- Department of Radiology, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Korea
| | - Seung Mun Jung
- Department of Radiology, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Korea
| | - Man Soo Park
- Department of Radiology, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Korea
| | - Dong-Rock Shin
- Department of Radiology, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Korea
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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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Choi SJ, Choi J, Jeon H, Bae SK, Ko J, Kim J, Yoon KD. Application of high-performance countercurrent chromatography for the isolation of steroidal saponins from Liriope plathyphylla. J Sep Sci 2014; 38:18-24. [DOI: 10.1002/jssc.201401007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2014] [Revised: 10/07/2014] [Accepted: 10/11/2014] [Indexed: 12/17/2022]
Affiliation(s)
- Soo-Jung Choi
- College of Pharmacy and Integrated Research Institute of Pharmaceutical Sciences, The Catholic University of Korea; Bucheon Republic of Korea
| | - Janggyoo Choi
- College of Pharmacy and Research Institute of Pharmaceutical Science, Seoul National University; Seoul Republic of Korea
| | - Heejin Jeon
- College of Pharmacy and Integrated Research Institute of Pharmaceutical Sciences, The Catholic University of Korea; Bucheon Republic of Korea
| | - Soo Kyung Bae
- College of Pharmacy and Integrated Research Institute of Pharmaceutical Sciences, The Catholic University of Korea; Bucheon Republic of Korea
| | - Jaeyoung Ko
- Materials Science Team, Medicinal Beauty Division, Amorepacific Corporation R&D Unit; Yongin Republic of Korea
| | - Jinwoong Kim
- College of Pharmacy and Research Institute of Pharmaceutical Science, Seoul National University; Seoul Republic of Korea
| | - Kee Dong Yoon
- College of Pharmacy and Integrated Research Institute of Pharmaceutical Sciences, The Catholic University of Korea; Bucheon Republic of Korea
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Lee CB, Choi SJ, Ahn JH, Ryu DS, Park MS, Jung SM, Shin DR. Ectopic insertion of the pectoralis minor tendon: inter-reader agreement and findings in the rotator interval on MRI. Korean J Radiol 2014; 15:764-70. [PMID: 25469088 PMCID: PMC4248632 DOI: 10.3348/kjr.2014.15.6.764] [Citation(s) in RCA: 6] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2014] [Accepted: 08/14/2014] [Indexed: 11/19/2022] Open
Abstract
Objective To evaluate magnetic resonance imaging (MRI) observer variability to detect ectopic insertion of the pectoralis minor tendon (EIPMT) and to investigate changes in the rotator interval in patients with EIPMT using MRI. Materials and Methods A total of 507 shoulder MRIs (male:female = 259:248; mean age, 55.4 years) were classified into 1) normal type insertion of the pectoralis minor tendon, 2) complete type EIPMT, and 3) partial type EIPMT independently by two radiologists. Inter-observer agreement was calculated using the kappa coefficient. Thickness of the fibrotic scar tissue in the subcoracoid triangle and humeral side axillary recess was measured. MRIs were reviewed by consensus with regard to the grade of fibrotic scar tissue proliferation in the rotator interval. Comparisons were made between normal and EIPMT and between partial and complete type EIPMT. Results The incidence of EIPMT was 13.4% (complete type, 7.7%; partial type, 5.7%). Inter-observer agreement was substantial (κ = 0.775). Fibrotic scar tissue in the subcoracoid triangle was thicker, and the grade of fibrotic scar tissue proliferation in the rotator interval was higher in the EIPMT group than those in the control group. No significant difference was observed in the thickness of humeral side axillary recess. The thicknesses of fibrotic scar tissue in the subcoracoid triangle and humeral side axillary recess as well as the grade of fibrotic scar tissue in the rotator interval were not significantly different between complete and partial type EIPMT. Conclusion MRI enabled detection of EIPMT with substantial observer agreement. Patients with EIPMT show a high tendency for fibrotic scar tissue proliferation in the rotator interval.
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Affiliation(s)
- Cheong-Bok Lee
- Department of Radiology, Asan Foundation, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung 210-711, Korea
| | - Soo-Jung Choi
- Department of Radiology, Asan Foundation, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung 210-711, Korea
| | - Jae-Hong Ahn
- Department of Radiology, Asan Foundation, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung 210-711, Korea
| | - Dae-Sick Ryu
- Department of Radiology, Asan Foundation, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung 210-711, Korea
| | - Man-Soo Park
- Department of Radiology, Asan Foundation, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung 210-711, Korea
| | - Seung-Mun Jung
- Department of Radiology, Asan Foundation, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung 210-711, Korea
| | - Dong-Rock Shin
- Department of Radiology, Asan Foundation, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung 210-711, Korea
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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: 108] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 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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Shin DR, Ryu DS, Park MS, Jung SM, Ahn JH, Lee JH, Choi SJ. Fluid collection in the right lateral portion of the superior aortic recess mimicking a right mediastinal mass: assessment with chest posterior anterior and MDCT. Korean J Radiol 2012; 13:579-85. [PMID: 22977325 PMCID: PMC3435855 DOI: 10.3348/kjr.2012.13.5.579] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2011] [Accepted: 03/28/2012] [Indexed: 11/24/2022] Open
Abstract
Objective We observed patients in whom the fluid collection in the right lateral portion of the superior aortic recess on computed tomography (CT) scans mimicked a right anterior mediastinal mass on chest PA radiographs. The purpose of this study was to assess chest PA and CT features of these patients. Materials and Methods All chest PA radiographs and CT scans in 9 patients were reviewed by two radiologists on a consensus basis; for the presence of pleural effusion, pulmonary edema and heart size on chest PA radiographs. For the portion of the fluid collection in the superior aortic recess (SAR), a connection between the right lateral portion of the SAR (rSAR) and posterior portion of the SAR (pSAR) on CT scans, and the distance between the right lateral margin of the rSAR and the right lateral margin of the superior vena cava. Results Fluid collection in the rSAR on CT scans caused a right anterior mediastinal mass or a bulging contour on chest PA radiographs in all women patients. All patients showed cardiomegaly, five patients had pleural effusion, and two patients had mild pulmonary edema. Further, eight patients showed a connection between the rSAR and the pSAR. Conclusion The characteristic features of these patients are the right anterior mediastinal mass-like opacity due to fluid collection in the rSAR, are bulging contour with a smooth margin and cardiomegaly regardless of pulmonary edema on the chest PA radiographs, and fluid connection between the rSAR and the pSAR on CT scans.
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Affiliation(s)
- Dong Rock Shin
- Department of Radiology, Gangneung Asan Hospital, College of Medicine, University of Ulsan, Gangneung 210-711, Korea
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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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