1
|
Liu YL, Song JS, Wang WW, Tang YT. The relationship between adverse outcomes and a full spectrum of ejection fraction in patients without acute myocardial infarction undergoing percutaneous coronary intervention. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.2103] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
There is insufficient study evaluating how the risk of adverse cardiovascular outcomes varies across the full range of LVEF in patients undergoing percutaneous coronary intervention (PCI). A more comprehensive evaluation could provide further understanding of prognosis and support the management of these patients.
Purpose
The present study aimed to assess the association between left ventricular ejection fraction (LVEF) and major adverse cardiovascular events (MACE) in patients with coronary artery diseases undergoing PCI.
Methods
A consecutive series of 9475 patients without acute myocardial infarction (AMI) undergoing PCI were enrolled into the study and followed up for a median 2.4 years. Patients were stratified into 8 groups by 5% intervals: under 40%, 40–45%, 45–50%, 50–55%, 55–60%, 60–65%, 65–70%, and over 70%. MACE, consisting of cardiac death, myocardial infarction, stent thrombosis, and revascularization, was evaluated as the outcome.
Results
MACE occurred in 594 (6.3%) patients. The MACE rates decreased before LVEF under 65% while increased after LVEF over 70%, showing a U-shaped pattern. The 65–70% group showed the lowest rate of MACE (4.5%). Consistently, in the Cox regression, the association between LVEF and MACE presented as a U-shaped pattern regardless of different age and sex groups, and after adjusted for clinical and procedural covariables. The LVEF categories lower than 65% or higher than 70% were independent predictors of MACE, compared with 65–70% group (Hazard ratios 1.311 to 2.657, all P value >0.05). Similar trend was also observed in restricted mean survival time analysis.
Conclusions
LVEF and MACE displayed a U-shaped association and patients with LVEF of 65–70% showed the lowest risk of MACE. The present study provided an insight into how the MACE risk changed in a wide spectrum of LVEF in patients without AMI undergoing PCI, which might improve preprocedural evaluation.
Funding Acknowledgement
Type of funding sources: None.
Collapse
Affiliation(s)
- Y L Liu
- Fuwai Hospital, CAMS and PUMC, Department of cardiology, Beijing, China
| | - J S Song
- Fuwai Hospital, CAMS and PUMC, Department of cardiology, Beijing, China
| | - W W Wang
- Fuwai Hospital, CAMS and PUMC, Department of cardiology, Beijing, China
| | - Y T Tang
- Peking University Third Hospital, Department of cardiology, Beijing, China
| |
Collapse
|
2
|
Kim SI, Lee HY, Jung WC, Song JS. EVALUATION OF INTERNAL EXPOSURE TO RADIOACTIVE AEROSOL GENERATED FROM PLASMA MELTING SYSTEM USING THE BIDAS CODE. Radiat Prot Dosimetry 2021; 194:9-17. [PMID: 33954746 DOI: 10.1093/rpd/ncab061] [Citation(s) in RCA: 2] [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] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 02/23/2021] [Accepted: 04/02/2021] [Indexed: 06/12/2023]
Abstract
The radioactive aerosol generated by the Nuclear Power Plant (NPP) decommissioning process can be inhaled by workers and deposited inside the human body, resulting in internal exposure. Because internal exposure, unlike external exposure, is difficult to measure directly, it is all the more necessary to assess the dose workers receive as a result of internal exposure. Precise assessment of the internal exposure necessitates actual measurements in the work environment such as the workers' respiration rate, kind of nuclide and amount of captured nuclide. However, in the event of difficulties in securing these measurements, the internal exposure dose can be estimated based upon the recommended values by the ICRP (International Commission on Radiological Protection) such as the intake fraction and particle size. In this study, 5 μm was selected as the particle size as recommended by the ICRP, and both heavy and light respiratory rates were used in the calculation. With respect to the nuclides contained in the radioactive aerosol and their concentrations, the data captured for the aerosol in the melting facility on the Kozloduy NPP premises in Bulgaria were applied to estimate workers' internal exposure. As a result, each worker was found not to have received more than 20 mSv/yr, which is the maximum annual permissible dose for workers.
Collapse
Affiliation(s)
- S I Kim
- Department of Nuclear Engineering, Chosun University, Pilmundae-ro 309, Dong-gu, Gwangju KS008, Republic of Korea
| | - H Y Lee
- Department of Nuclear Engineering, Chosun University, Pilmundae-ro 309, Dong-gu, Gwangju KS008, Republic of Korea
| | - W C Jung
- Department of Chemical Engineering, Korea Hydro & Nuclear Power Co., Ltd (KHNP), 103-16, Bulguk-ro, Yangbuk-myeon, Gyeongju-si, Gyeongbuk KSxx010, Republic of Korea
| | - J S Song
- Department of Nuclear Engineering, Chosun University, Pilmundae-ro 309, Dong-gu, Gwangju KS008, Republic of Korea
| |
Collapse
|
3
|
Song JS, Sun JJ, Sun YE, Liu Y, Gu XP, Ma ZL. [Risk factors of massive introperative blood loss in posterior spinal fusion for adolescent idiopathic scoliosis]. Zhonghua Yi Xue Za Zhi 2021; 101:1002-1008. [PMID: 33845538 DOI: 10.3760/cma.j.cn112137-20200924-02710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the risk factors and prognostic impact of massive introperative blood loss in posterior spinal fusion (PSF) surgery for adolescent idiopathic scoliosis (AIS). Methods: Clinical data were collected of 1 896 AIS patients who underwent PSF surgery under general anesthesia in Drum Tower Hospital Affiliated to Nanjing University Medical School from November 2010 to October 2019 and retrospectively analyzed. According to the volume of intraoperative blood loss, the patients were divided into the massive introperative blood loss group [estimated blood loss (EBL)/estimated blood volume (EBV)≥30%] and the non-massive introperative blood loss group (EBL/EBV<30%). The perioperative parameters between the two groups were compared, single factor analysis and multivariate logistic regression analysis was performed to identify independent risk factors related to massive introperative blood loss in PSF surgery. Results: A total of 1 896 AIS patients who underwent PSF surgery were included in the study. There were 298 males and 1 598 females, with an age of (14.5±1.7) years. Among them, 633 (33%) experienced massive intraoperative blood loss. The factors significantly related to the massive blood loss during PSF surgery in this study are: sex, body mass index(BMI), preoperative blood platelet count (PLT), prothrombin time, international normalized ratio(INR), preoperative Cobb angle, duration of operation, the number of fused levels, the number of screws, thoracoplasty, intraoperative use of tranexamic acid and dexmedetomidine; The independent factors included duration of operation longer than 4 hours(OR=4.311,P<0.001), the number of fused levels to be more than 10(OR=4.044,P<0.001), thoracoplasty (OR=2.174,P=0.019), BMI lower than 18.1 kg/m2(OR=2.094,P<0.001), preoperative PLT less than 186.5×109/L(OR=1.480,P=0.009), preoperative INR larger than 1 (OR=1.531,P=0.003) and preoperative Cobb angle larger than 53°(OR=1.306,P=0.036) ;Intraoperative use of tranexamic acid (OR=0.770, P=0.047) and dexmedetomidine (OR=0.653, P=0.008) are protective factors for massive intraoperative blood loss. In addition, in the massive intraoperative blood loss group, length of postoperative hospital stay (P<0.001), volume of postoperative incision drainage (P<0.001), postoperative allogeneic blood transfusion rate (22.7% vs 14.3%, P<0.001), incidence of postoperative hypoalbuminemia (90.3% vs 80.7%, P<0.001) and the number of rescue opioid analgesic requirements after surgery (P=0.006) were significantly higher than those in the non-massive introperative blood loss group. Conclusions: Longer operation duration, higher number of fusion levels, lower BMI, lower preoperative PLT, higher INR, larger preoperative Cobb angle and intraoperative thoraplasty are independent risk factors for massive intraoperative blood loss in AIS patients undergoing PSF surgery. Intraoperative use of tranexamic acid and dexmedetomidine can reduce the risk of massive blood loss in PSF surgery. Massive intraoperative blood loss significantly affects the patient's prognosis.
Collapse
Affiliation(s)
- J S Song
- Department of Anesthesiology, Drum Tower Hospital Affiliated to Nanjing University Medical School, Nanjing 210008, China
| | - J J Sun
- Department of Anesthesiology, Drum Tower Hospital Affiliated to Nanjing University Medical School, Nanjing 210008, China
| | - Y E Sun
- Department of Anesthesiology, Drum Tower Hospital Affiliated to Nanjing University Medical School, Nanjing 210008, China
| | - Y Liu
- Department of Anesthesiology, Drum Tower Hospital Affiliated to Nanjing University Medical School, Nanjing 210008, China
| | - X P Gu
- Department of Anesthesiology, Drum Tower Hospital Affiliated to Nanjing University Medical School, Nanjing 210008, China
| | - Z L Ma
- Department of Anesthesiology, Drum Tower Hospital Affiliated to Nanjing University Medical School, Nanjing 210008, China
| |
Collapse
|
4
|
Park JH, Oh J, Song JS, Kim J, Sung GH. Bisifusarium Delphinoides, an Emerging Opportunistic Pathogen in a Burn Patient with Diabetes Mellitus. Mycobiology 2019; 47:340-345. [PMID: 31565470 PMCID: PMC6758602 DOI: 10.1080/12298093.2019.1628521] [Citation(s) in RCA: 3] [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: 09/03/2018] [Revised: 05/08/2019] [Accepted: 05/26/2019] [Indexed: 06/10/2023]
Abstract
An 82-year-old man with diabetes was admitted to the emergency department with a third-degree burn on his left leg. The deep swab specimen from his left leg was cultured on Sabouraud dextrose agar without cycloheximide and incubated at 25 °C for 5 days. On the basis of morphological characteristics and multigene phylogenetic analyses of the internal transcribed spacer region of ribosomal DNA and partial fragments of beta-tubulin and translation elongation factor 1-alpha, the causal agent of fungal skin infection was identified as Bisifusarium delphinoides, which was newly introduced by accommodating a Fusarium dimerum species complex. Thus, we describe here the first case of skin infection caused by B. delphinoides on a burn patient with diabetes mellitus based on morphological observation and molecular analysis.
Collapse
Affiliation(s)
- Ji-Hyun Park
- Translational Research Division, Biomedical Institute of Mycological Resource, International St. Mary’s Hospital and College of Medicine, Catholic Kwandong University, Incheon, Korea
| | - Junsang Oh
- Translational Research Division, Biomedical Institute of Mycological Resource, International St. Mary’s Hospital and College of Medicine, Catholic Kwandong University, Incheon, Korea
| | - Ji-Sun Song
- Department of Pathology, International St. Mary's Hospital, Catholic Kwandong University, Incheon, Korea
| | - Jayoung Kim
- Department of Laboratory Medicine, International St. Mary's Hospital, Catholic Kwandong University, Incheon, Korea
| | - Gi-Ho Sung
- Translational Research Division, Biomedical Institute of Mycological Resource, International St. Mary’s Hospital and College of Medicine, Catholic Kwandong University, Incheon, Korea
- Department of Microbiology, College of Medicine, Catholic Kwandong University, Gangneung-si, Gangwon-do, Korea
| |
Collapse
|
5
|
Cho YJ, Jung WY, Lee SY, Song JS, Park HJ. Perirenal capsule and scrotal involvement in immunoglobulin G4-related kidney disease: case-based review. Rheumatol Int 2018; 38:1941-1948. [PMID: 29959468 DOI: 10.1007/s00296-018-4089-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [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: 05/09/2018] [Accepted: 06/18/2018] [Indexed: 12/20/2022]
Abstract
Immunoglobulin G4-related disease (IgG4-RD) is a chronic, immune-mediated-, systemic disease that is characterized by IgG4 plasma cell infiltration with fibrotic changes in various organs. The most affected organs are pancreas and salivary glands. Kidney can be rarely involved, and is usually represented as a renal mass and organomegaly. Usually, elevated levels of serum IgG4 more than 135 mg/dl with organ-specific features and biopsy results showing enriched infiltration of IgG4-positive plasma cells are needed to diagnose the disease. However, we experienced two unusual cases of IgG4-RD involving kidney. IgG4-related kidney disease (IgG4-RKD) was first reported as an extra pancreatic feature of autoimmune pancreatitis(AIP) in 2004. Herein, we describe two cases of such unique presentation of IgG4RKD and a literature review focusing on clinicopathologic features of IgG4RKD. Our cases are distinct in the fact that IgG4RD invades unusual organs such as perinephric capsule or scrotum. We reported the patient who showed extinct perirenal capsule invasion with multi-organ involvement including exocrine glands in comparison to previous IgG4RKD that often involved in renal parenchyma and renal pelvis lesions. And the other patient had scrotal invasion with multifocal renal parenchymes. Referring to the features observed in these two cases, we could propose that as every organ can be related to IgG4RD, we propose clinicians to confirm the disease using imaging, serologic, and pathologic studies. We also reviewed previous reports of IgG4-RKD and summarized diverse imaging findings and pathologic features.
Collapse
Affiliation(s)
- Yoon-Jin Cho
- Catholic Kwandong University College of Medicine, Incheon, Republic of Korea
| | - Wun-Yong Jung
- Department of Pathology, Catholic Kwandong University College of Medicine, International St. Mary's Hospital, Incheon, Republic of Korea
| | - Sang-Yoep Lee
- Department of Pathology, Catholic Kwandong University College of Medicine, International St. Mary's Hospital, Incheon, Republic of Korea
| | - Ji-Sun Song
- Department of Pathology, Catholic Kwandong University College of Medicine, International St. Mary's Hospital, Incheon, Republic of Korea
| | - Hee-Jin Park
- Division of Rheumatology, Department of Internal Medicine, Catholic Kwandong University College of Medicine, International St. Mary's Hospital, Simgok-dong 291, Seo-gu, Incheon, Republic of Korea.
| |
Collapse
|
6
|
Lim B, Hwang M, Song JS, Ryu AJ, Joung B, Shim EB, Ryu H, Pak HN. 1008Effectiveness of atrial fibrillation rotor ablation is dependent on conduction velocity: an in-silico 3-dimensional modeling study. Europace 2018. [DOI: 10.1093/europace/euy015.557] [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: 11/14/2022] Open
Affiliation(s)
- B Lim
- Yonsei University , Seoul, Korea Republic of
| | - M Hwang
- Yonsei University , Seoul, Korea Republic of
| | - J S Song
- Yonsei University , Seoul, Korea Republic of
| | - A J Ryu
- Kangwon National University Hospital, Chuncheon, Korea Republic of
| | - B Joung
- Yonsei University , Seoul, Korea Republic of
| | - E B Shim
- Kangwon National University Hospital, Chuncheon, Korea Republic of
| | - H Ryu
- NVIDIA, Seoul, Korea Republic of
| | - H N Pak
- Yonsei University , Seoul, Korea Republic of
| |
Collapse
|
7
|
Chen Y, Song JS. [The clinical application status and progression of auditory steady-state evoked response]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2017; 31:1854-1857. [PMID: 29798404 DOI: 10.13201/j.issn.1001-1781.2017.23.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 08/06/2017] [Indexed: 11/12/2022]
Abstract
Auditory steady-state evoked response(ASSR) is an objective method to evaluate hearing threshold. Recently, it was reported that CE-Chirp ASSR is more reliable than the conventional ASSR in predicting the behavioral hearing threshold. Many reseaches were conducted to improve the reliability of ASSR threshold and behavioral threshold. This paper reviewed the development, principle, clinical application status, and progress of ASSR.
Collapse
Affiliation(s)
- Y Chen
- Department of Otorhinolaryngology Head and Neck Surgery, the First People's Hospital Affiliated to Guangzhou Medical University, Guangzhou, 510180, China
| | - J S Song
- Department of Otorhinolaryngology Head and Neck Surgery, the First People's Hospital Affiliated to Guangzhou Medical University, Guangzhou, 510180, China
| |
Collapse
|
8
|
Yang YM, Yoo WK, Yoo JH, Kwak YH, Oh JK, Song JS, Kim SW. The functional relevance of diffusion tensor imaging in comparison to conventional MRI in patients with cervical compressive myelopathy. Skeletal Radiol 2017; 46:1477-1486. [PMID: 28714054 DOI: 10.1007/s00256-017-2713-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [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: 01/24/2017] [Revised: 05/21/2017] [Accepted: 07/03/2017] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To determine the functional relevance of diffusion tensor imaging (DTI) metrics and conventional MRI (signal intensity change in T2, compression ratio) by measuring the correlation of these parameters with clinical outcome measured by the modified Japanese Orthopedic Association (mJOA) score. MATERIALS AND METHODS A total of 20 cervical myelopathy (CM) patients participated in this prospective cohort study. The severities of CM were assessed using the mJOA score. Conventional MRIs (T2-weighted images) measuring the signal changes of spinal cords and the degree of compression at the lesion level and DTI metrics [fractional anisotropy (FA), apparent diffusion coefficient (ADC)] at each lesion and below each lesion (C7/T1) level were acquired using a 3-T Achieva MRI. These parameters were correlated with the mJOA scores to determine the functional relevance. RESULTS Ninety percent of CM patients showed signal changes and 30 % of patients noted a more than 40% canal compression ratio in conventional MRIs at the lesion level; however, these findings were not correlated with the mJOA score (p < 0.05). In contrast, FA values on DTI showed high sensitivity to CM (100%), which was well correlated with the mJOA score (p = 0.034, r = 0.475) below the lesion level (C7/T1). CONCLUSIONS This study showed a meaningful symptomatic correlation between mJOA scores and FA values below the lesion levels in CM patients. It could give us more understanding of the pathological changes in spinal cords matched with various clinical findings in CM patients than the results from conventional MRI.
Collapse
Affiliation(s)
- Young-Mi Yang
- Spine Center, Hallym University Sacred Heart Hospital, College of Medicine, Hallym University, 896 Pyeongchon-dong, Dongan-gu, Anyang-si, Gyeonggi-do, 431-070, South Korea
| | - Woo-Kyoung Yoo
- Department of Physical Medicine and Rehabilitation, Hallym University Sacred Heart Hospital, College of Medicine, Hallym University, Anyang-si, South Korea
- Hallym Institute for Translational Genomics & Bioinformatics, Hallym University Sacred Heart Hospital, College of Medicine, Hallym University, Anyang-si, South Korea
| | - Je Hyun Yoo
- Department of Orthopaedic surgery, Hallym University Sacred Heart Hospital, College of Medicine, Hallym University, Anyang-si, South Korea
| | - Yoon Hae Kwak
- Department of Orthopaedic surgery, Hallym University Sacred Heart Hospital, College of Medicine, Hallym University, Anyang-si, South Korea
| | - Jae-Keun Oh
- Spine Center, Hallym University Sacred Heart Hospital, College of Medicine, Hallym University, 896 Pyeongchon-dong, Dongan-gu, Anyang-si, Gyeonggi-do, 431-070, South Korea
| | - Ji-Sun Song
- Spine Center, Hallym University Sacred Heart Hospital, College of Medicine, Hallym University, 896 Pyeongchon-dong, Dongan-gu, Anyang-si, Gyeonggi-do, 431-070, South Korea
| | - Seok Woo Kim
- Spine Center, Hallym University Sacred Heart Hospital, College of Medicine, Hallym University, 896 Pyeongchon-dong, Dongan-gu, Anyang-si, Gyeonggi-do, 431-070, South Korea.
- Department of Orthopaedic surgery, Hallym University Sacred Heart Hospital, College of Medicine, Hallym University, Anyang-si, South Korea.
| |
Collapse
|
9
|
Park DW, Kim SH, Moon JY, Song JS, Choi J, Kwak HJ, Jeong MG, Ro YS, Kim TH, Sohn JW, Shin DH, Park SS, Yoon HJ. The effect of low-volatile organic compounds, water-based paint on aggravation of allergic disease in schoolchildren. Indoor Air 2017; 27:320-328. [PMID: 27007057 DOI: 10.1111/ina.12301] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Accepted: 03/19/2016] [Indexed: 06/05/2023]
Abstract
Whether indoor painting aggravates preexisting allergic diseases remains unclear. We aimed to evaluate the impact of new classroom painting on aggravation of asthma, allergic rhinitis (AR), and atopic dermatitis (AD) in children. Studied school was previously painted with conventional water-based paint 20 years ago and had natural ventilation system. We identified a total of 172 children aged 10-12 years with allergic diseases in 17 classrooms, which were allocated to newly painted rooms with low-volatile organic compounds (VOC), water-based paint, or existing rooms. After painting, there was no intervention or internal airflow to influence indoor air environment in both classrooms. We prospectively assessed the symptom severity and serious events of allergic diseases between both classrooms at baseline and after one and eight weeks after painting. At one and eight weeks, there were no significant changes in the Childhood Asthma Control Test scores, the fractional nitric oxide levels, lung function in asthmatic children in either classroom. There were also no significant changes in the severity score of AR or AD, or serious events in all allergic diseases. These findings suggest classroom painting with this new paint at the levels encountered in this study might not be a major aggravating factor for school-aged children with allergic diseases.
Collapse
Affiliation(s)
- D W Park
- Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea
| | - S-H Kim
- Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea
| | - J-Y Moon
- Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea
| | - J S Song
- Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea
| | - J Choi
- Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea
| | - H J Kwak
- Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea
| | - M G Jeong
- Department of Dermatology, Hanyang University College of Medicine, Seoul, Korea
| | - Y S Ro
- Department of Dermatology, Hanyang University College of Medicine, Seoul, Korea
| | - T H Kim
- Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea
| | - J W Sohn
- Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea
| | - D H Shin
- Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea
| | - S S Park
- Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea
| | - H J Yoon
- Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea
| |
Collapse
|
10
|
Song JS, Takimoto K, Jeon M, Vadakekalam J, Ruparel NB, Diogenes A. Decellularized Human Dental Pulp as a Scaffold for Regenerative Endodontics. J Dent Res 2017; 96:640-646. [PMID: 28196330 DOI: 10.1177/0022034517693606] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Teeth undergo postnatal organogenesis relatively late in life and only complete full maturation a few years after the crown first erupts in the oral cavity. At this stage, development can be arrested if the tooth organ is damaged by either trauma or caries. Regenerative endodontic procedures (REPs) are a treatment alternative to conventional root canal treatment for immature teeth. These procedures rely on the transfer of apically positioned stem cells, including stem cells of the apical papilla (SCAP), into the root canal system. Although clinical success has been reported for these procedures, the predictability of expected outcomes and the organization of the newly formed tissues are affected by the lack of an available suitable scaffold that mimics the complexity of the dental pulp extracellular matrix (ECM). In this study, we evaluated 3 methods of decellularization of human dental pulp to be used as a potential autograft scaffold. Tooth slices of human healthy extracted third molars were decellularized by 3 different methods. One of the methods generated the maximum observed decellularization with minimal impact on the ECM composition and organization. Furthermore, recellularization of the scaffold supported the proliferation of SCAP throughout the scaffold with differentiation into odontoblast-like cells near the dentinal walls. Thus, this study reports that human dental pulp from healthy extracted teeth can be successfully decellularized, and the resulting scaffold supports the proliferation and differentiation of SCAP. The future application of this form of an autograft in REPs can fulfill a yet unmet need for a suitable scaffold, potentially improving clinical outcomes and ultimately promoting the survival and function of teeth with otherwise poor prognosis.
Collapse
Affiliation(s)
- J S Song
- 1 Department of Endodontics, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA.,2 Department of Pediatric Dentistry, College of Dentistry, Yonsei University, Seoul, Republic of Korea
| | - K Takimoto
- 1 Department of Endodontics, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
| | - M Jeon
- 3 Oral Science Research Center, College of Dentistry, Yonsei University, Seoul, Republic of Korea
| | - J Vadakekalam
- 1 Department of Endodontics, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
| | - N B Ruparel
- 1 Department of Endodontics, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
| | - A Diogenes
- 1 Department of Endodontics, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
| |
Collapse
|
11
|
Abstract
The regeneration of structurally/functionally competent tooth root cementum is a critical step for the successful restoration of periodontal attachment. In this study, we tested whether a poly-glutamic acid-rich domain and glutamine-containing transglutaminase substrate can be used to target biologically active peptides to the mineralized root matrix and to bind such peptides covalently to the organic matrix. As a biologically active model molecule, the integrin-binding motif, RGD, was used. The effects of immobilization of such synthetic peptides to the dentin matrix on cementoblastic adhesion in vitro and cementogenesis in vivo were studied. In vitro, cementoblastic adhesion improved significantly when the dentin surface contained covalently bound peptides. In vivo, this bound peptide significantly increased cementum formation compared with that attained in control conditions. Transglutaminase-catalyzed covalent binding of bioactive peptides targeted to mineralized collagenous dentin matrix via the poly-glutamate domain can be readily achieved. This approach offers potential for clinical use in periodontal regeneration.
Collapse
Affiliation(s)
- J S Song
- Department of Endodontics, School of Dental Medicine, University of Pennsylvania, 240 South 40th Street, Levy Bldg, Rm 423, Philadelphia, PA 19104, USA.
| | | | | | | |
Collapse
|
12
|
Lee HS, Lee JH, Kim SO, Song JS, Kim BI, Kim YJ, Lee JH. Comparison of the oral microbiome of siblings using next-generation sequencing: a pilot study. Oral Dis 2016; 22:549-56. [DOI: 10.1111/odi.12491] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Revised: 04/05/2016] [Accepted: 04/10/2016] [Indexed: 01/06/2023]
Affiliation(s)
- H-S Lee
- Department of Pediatric Dentistry; School of Dentistry; Kyung Hee University; Seoul Korea
| | - JH Lee
- Department of Clinical Pharmacology and Therapeutics; College of Medicine; Kyung Hee University; Seoul Korea
| | - S-O Kim
- Department of Pediatric Dentistry; College of Dentistry; Yonsei University; Seoul Korea
- Oral Science Research Center; College of Dentistry; Yonsei University; Seoul Korea
| | - JS Song
- Department of Pediatric Dentistry; College of Dentistry; Yonsei University; Seoul Korea
- Oral Science Research Center; College of Dentistry; Yonsei University; Seoul Korea
| | - BI Kim
- Oral Science Research Center; College of Dentistry; Yonsei University; Seoul Korea
- Department of Preventive Dentistry and Public Oral Health; College of Dentistry; Yonsei University; Seoul Korea
| | - YJ Kim
- Department of Pediatric Dentistry; School of Dentistry; Seoul National University; Seoul Korea
| | - J-H Lee
- Department of Pediatric Dentistry; College of Dentistry; Yonsei University; Seoul Korea
- Oral Science Research Center; College of Dentistry; Yonsei University; Seoul Korea
| |
Collapse
|
13
|
Lee BJ, Kang DW, Park HY, Song JS, Kim JM, Jang JY, Lee JC, Wang SG, Jung JS, Shin SC. Isolation and Localization of Mesenchymal Stem Cells in Human Palatine Tonsil by W5C5 (SUSD2). Cell Physiol Biochem 2016; 38:83-93. [PMID: 26741828 DOI: 10.1159/000438611] [Citation(s) in RCA: 15] [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] [Accepted: 11/18/2015] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIMS Although tonsil-mesenchymal stem cells (T-MSCs) have been studied as a new autologous or homologous source of MSCs, research on specific markers of MSCs and localization for purified T-MSC isolation has not yet been reported. This study investigates the expression of W5C5 (SUSD2) in tonsil stromal cells and the colony-forming ability and differentiation potential of W5C5+ cells to determine the usefulness of W5C5+ MSCs as a marker that can be used for the purification of T-MSCs. In addition, the location of W5C5+ cells expressed in the tonsil tissues is examined. METHODS T-MSCs were isolated from the tonsillar tissues of 12 patients undergoing tonsillectomy. The colony-forming ability, surface markers, proliferation potential, and differentiation capacities of purified W5C5+ MSCs, W5C5- MSCs, and unselected T-MSCs were evaluated. The location of the W5C5+ cells in the tonsillar tissues was also investigated by immunohistochemistry. RESULTS W5C5 was expressed in 2.5±0.4% of fresh human tonsil stromal cells. W5C5+ cells formed many colonies, but W5C5- cells did not form any colonies. The colony-forming number of W5C5+ cells (74.4 ± 9.8) was significantly higher than that of unselected tonsil stromal cells (23.6 ± 3.7). However, the differences in proliferation potential, surface marker expression, and differentiation potential between W5C5+ T-MSCs and unselected T-MSCs were not significant. W5C5+ cells were identified in the perivascular area around the blood vessels. CONCLUSION W5C5+ T-MSCs possessed typical MSC properties with high colony-forming efficiency, and niches of W5C5+ T-MSCs were located in the perivascular area of tonsil tissues. These findings suggest that W5C5 is a useful single marker for the isolation of purified T-MSCs.
Collapse
Affiliation(s)
- Byung-Joo Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, Pusan National University School of Medicine and Biomedical Research Institute, Pusan National University, Busan, Korea
| | | | | | | | | | | | | | | | | | | |
Collapse
|
14
|
Chung WY, Song JS, Oh HE, Park HJ. A Case of Idiopathic Massive Rice Bodies in the Knee Joint without Rheumatoid Arthritis or Tuberculosis and a Literature Review. J Rheum Dis 2016. [DOI: 10.4078/jrd.2016.23.5.316] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Whan Yong Chung
- Department of Orthopedics, Catholic Kwandong University International St. Mary's Hospital, Incheon, Korea
| | - Ji-Sun Song
- Department of Pathology, Catholic Kwandong University International St. Mary's Hospital, Incheon, Korea
| | - Hwa Eun Oh
- Department of Pathology, Korea University Ansan Hospital, Ansan, Korea
| | - Hee Jin Park
- Department of Rheumatology, Catholic Kwandong University International St. Mary's Hospital, Incheon, Korea
| |
Collapse
|
15
|
Chun S, Song JS, Yu S, Kim JS, Kwon OJ, Kang ES. Identification of a novel HLA-C*03 variant allele, C*03:280 by sequence-based typing. ACTA ACUST UNITED AC 2015; 86:455-6. [PMID: 26514239 DOI: 10.1111/tan.12685] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Revised: 08/31/2015] [Accepted: 09/22/2015] [Indexed: 11/29/2022]
Abstract
The new allele, HLA-C*03:280 differs from C*03:04:01 by one nucleotide substitution at codon 35 (CGG→CAG).
Collapse
Affiliation(s)
- S Chun
- Department of Laboratory Medicine and Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - J S Song
- Department of Laboratory Medicine and Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - S Yu
- Department of Laboratory Medicine and Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - J S Kim
- Department of Laboratory Medicine and Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - O J Kwon
- Biowithus Life Science Institute, Seoul, Korea
| | - E S Kang
- Department of Laboratory Medicine and Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| |
Collapse
|
16
|
Watanabe YX, Kim YH, Jeong SC, Hirayama Y, Imai N, Ishiyama H, Jung HS, Miyatake H, Choi S, Song JS, Clement E, de France G, Navin A, Rejmund M, Schmitt C, Pollarolo G, Corradi L, Fioretto E, Montanari D, Niikura M, Suzuki D, Nishibata H, Takatsu J. Pathway for the Production of Neutron-Rich Isotopes around the N=126 Shell Closure. Phys Rev Lett 2015; 115:172503. [PMID: 26551108 DOI: 10.1103/physrevlett.115.172503] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Indexed: 06/05/2023]
Abstract
Absolute cross sections for isotopically identified products formed in multinucleon transfer in the (136)Xe+(198)Pt system at ∼8 MeV/nucleon are reported. The isotopic distributions obtained using a large acceptance spectrometer demonstrated the production of the "hard-to-reach" neutron-rich isotopes for Z<78 around the N=126 shell closure far from stability. The main contribution to the formation of these exotic nuclei is shown to arise in collisions with a small kinetic energy dissipation. The present experimental finding corroborates for the first time recent predictions that multinucleon transfer reactions would be the optimum method to populate and characterize neutron-rich isotopes around N=126 which are crucial for understanding both astrophysically relevant processes and the evolution of "magic" numbers far from stability.
Collapse
Affiliation(s)
- Y X Watanabe
- Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - Y H Kim
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
- Institute for Nuclear and Particle Astrophysics, Seoul National University, Seoul 08826, Korea
| | - S C Jeong
- Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - Y Hirayama
- Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - N Imai
- Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - H Ishiyama
- Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - H S Jung
- Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - H Miyatake
- Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - S Choi
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
- Institute for Nuclear and Particle Astrophysics, Seoul National University, Seoul 08826, Korea
| | - J S Song
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
- Institute for Nuclear and Particle Astrophysics, Seoul National University, Seoul 08826, Korea
- Institute for Basic Science, Daejeon 34047, Korea
| | - E Clement
- Grand Accélérateur National d'Ions Lourds (GANIL), F-14076 Caen Cedex 5, France
| | - G de France
- Grand Accélérateur National d'Ions Lourds (GANIL), F-14076 Caen Cedex 5, France
| | - A Navin
- Grand Accélérateur National d'Ions Lourds (GANIL), F-14076 Caen Cedex 5, France
| | - M Rejmund
- Grand Accélérateur National d'Ions Lourds (GANIL), F-14076 Caen Cedex 5, France
| | - C Schmitt
- Grand Accélérateur National d'Ions Lourds (GANIL), F-14076 Caen Cedex 5, France
| | - G Pollarolo
- Dipartimento di Fisica Teorica, Università di Torino, and Istituto Nazionale di Fisica Nucleare, I-10125 Torino, Italy
| | - L Corradi
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020 Legnaro, Italy
| | - E Fioretto
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020 Legnaro, Italy
| | - D Montanari
- Dipartimento di Fisica, Università di Padova, and Istituto Nazionale di Fisica Nucleare, I-35131 Padova, Italy
| | - M Niikura
- Institut de Physique Nucléaire (IPN), IN2P3-CNRS, F-91406 Orsay Cedex, France
| | - D Suzuki
- Institut de Physique Nucléaire (IPN), IN2P3-CNRS, F-91406 Orsay Cedex, France
| | - H Nishibata
- Department of Physics, Osaka University, Osaka 560-0043, Japan
| | - J Takatsu
- Department of Physics, Osaka University, Osaka 560-0043, Japan
| |
Collapse
|
17
|
Kang CM, Kim SH, Shin Y, Lee HS, Lee JH, Kim GT, Song JS. A randomized controlled trial of ProRoot MTA, OrthoMTA and RetroMTA for pulpotomy in primary molars. Oral Dis 2015; 21:785-91. [DOI: 10.1111/odi.12348] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Revised: 04/21/2015] [Accepted: 04/29/2015] [Indexed: 11/27/2022]
Affiliation(s)
- C-M Kang
- Department of Pediatric Dentistry; College of Dentistry; Yonsei University; Seoul Korea
| | - S-H Kim
- Department of Pediatric Dentistry; College of Dentistry; Yonsei University; Seoul Korea
| | - Y Shin
- Department of Conservative Dentistry; College of Dentistry; Yonsei University; Seoul Korea
| | - H-S Lee
- Department of Pediatric Dentistry; Dental school; Kyung Hee University; Seoul Korea
| | - J-H Lee
- Department of Pediatric Dentistry; College of Dentistry; Yonsei University; Seoul Korea
| | - GT Kim
- Department of Oral and Maxillofacial radiology; Dental school; Kyung Hee University; Seoul Korea
| | - JS Song
- Department of Pediatric Dentistry; College of Dentistry; Yonsei University; Seoul Korea
| |
Collapse
|
18
|
Choi JS, Lee BJ, Park HY, Song JS, Shin SC, Lee JC, Wang SG, Jung JS. Effects of donor age, long-term passage culture, and cryopreservation on tonsil-derived mesenchymal stem cells. Cell Physiol Biochem 2015; 36:85-99. [PMID: 25924984 DOI: 10.1159/000374055] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/24/2015] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVES Human mesenchymal stem cells (MSCs) are efficacious in various cellular therapeutic applications and have been isolated from several tissues. Recent studies have reported that human tonsil tissue contains a new source of progenitor cells, potentially applicable for cell-based therapies. Information about the effects of donor age, long-term passage and cryopreservation are essential for clinical applications and cell-based therapies. Therefore, the authors investigated how the morphology, cell-surface markers, proliferation potential and differentiation capacity of tonsil-derived MSCs (T-MSCs) were affected by donor age, long-term passage, and cryopreservation. MATERIALS AND METHODS T-MSCs were isolated from tonsillar tissue of 20 patients undergoing tonsillectomy. Authors evaluated the effects of donor-age, long-term passage, and cryopreservation on the morphology, surface markers, proliferation potential and differentiation capacities of T-MSCs. RESULTS T-MSCs exhibited a fibroblast-like, spindle-shaped appearance. There were no significant morphological differences according to donor age, long-term passage or cryopreservation. T-MSCs isolated from donors of various ages were positive for markers CD90, CD44, and CD73, but negative for CD45, CD31, and HLA-DR. There were no significant differences in the expression of positive and negative surface markers as a function of donor age, long-term passage and cryopreservation. T-MSCs from different donor age groups showed similar proliferation potentials after passage 2. After long-term passage and cryopreservation, there were no significant morphological differences. Cryopreservation did not affect the proliferation potential of T-MSCs, but there was a significant decrease in the proliferation potential in long-term passage T-MSCs (passage 15). The effect of donor age, long-term passage and cryopreservation on the in vitro adipogenic, osteogenic, and chondrogenic differentiation potential of T-MSCs was not significant. CONCLUSION The effect of donor age, long-term passage culture, and cryopreservation on T-MSC properties are negligible, except for the proliferation capacity of long-term cultured T-MSCs. Therefore, T-MSCs are considered to be promising MSCs that can be used as future alternative sources for autologous or allogenic MSCs.
Collapse
Affiliation(s)
- Jin-Sik Choi
- Department of Otorhinolaryngology-Head and Neck Surgery, Pusan National University School of Medicine and Biomedical Research Institute, Pusan National University, Busan, Korea
| | | | | | | | | | | | | | | |
Collapse
|
19
|
Lee YJ, Son SK, Park JH, Song JS, Cheon CK. NEU1 mutation in a Korean infant with type 2 sialidosis presenting as isolated fetal ascites. Pediatr Neonatol 2015; 56:68-9. [PMID: 25223955 DOI: 10.1016/j.pedneo.2014.05.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2014] [Revised: 04/29/2014] [Accepted: 05/22/2014] [Indexed: 01/30/2023] Open
Affiliation(s)
- Yeoun-Joo Lee
- Department of Pediatrics, Pusan National University Children's Hospital, Yangsan, South Korea
| | - Seung-Kook Son
- Department of Pediatrics, Pusan National University Children's Hospital, Yangsan, South Korea
| | - Jae-Hong Park
- Department of Pediatrics, Pusan National University Children's Hospital, Yangsan, South Korea
| | - Ji-Sun Song
- Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, South Korea
| | - Chong-Kun Cheon
- Department of Pediatrics, Pusan National University Children's Hospital, Yangsan, South Korea; Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, South Korea.
| |
Collapse
|
20
|
Choi OK, Song JS, Cha DK, Lee JW. Biodiesel production from wet municipal sludge: evaluation of in situ transesterification using xylene as a cosolvent. Bioresour Technol 2014; 166:51-56. [PMID: 24905042 DOI: 10.1016/j.biortech.2014.05.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [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: 02/26/2014] [Revised: 04/26/2014] [Accepted: 05/02/2014] [Indexed: 06/03/2023]
Abstract
This study proposes a method to produce biodiesel from wet wastewater sludge. Xylene was used as an alternative cosolvent to hexane for transesterification in order to enhance the biodiesel yield from wet wastewater sludge. The water present in the sludge could be separated during transesterification by employing xylene, which has a higher boiling point than water. Xylene enhanced the biodiesel yield up to 8.12%, which was 2.5 times higher than hexane. It was comparable to the maximum biodiesel yield of 9.68% obtained from dried sludge. Xylene could reduce either the reaction time or methanol consumption, when compared to hexane for a similar yield. The fatty acid methyl esters (FAMEs) content of the biodiesel increased approximately two fold by changing the cosolvent from hexane to xylene. The transesterification method using xylene as a cosolvent can be applied effectively and economically for biodiesel recovery from wet wastewater sludge without drying process.
Collapse
Affiliation(s)
- O K Choi
- Program in Environmental Technology and Policy, Korea University, Sejong 339-700, Republic of Korea
| | - J S Song
- Department of Environmental Engineering, College of Science and Technology, Korea University, Sejong 339-700, Republic of Korea
| | - D K Cha
- Department of Civil and Environmental Engineering, University of Delaware, Newark, DE, USA
| | - J W Lee
- Program in Environmental Technology and Policy, Korea University, Sejong 339-700, Republic of Korea; Department of Environmental Engineering, College of Science and Technology, Korea University, Sejong 339-700, Republic of Korea.
| |
Collapse
|
21
|
Hwang HP, Yu HC, Park HS, Song JS, Kang KP, Kim W, Park SK, Lee S. Huge abdominal cyst occurred after kidney transplantation. Transplant Proc 2014; 46:657-8. [PMID: 24656039 DOI: 10.1016/j.transproceed.2013.11.059] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2013] [Accepted: 11/22/2013] [Indexed: 11/19/2022]
Abstract
This case demonstrates continuous ambulatory peritoneal dialysis-related endometrial tissue migration and occurrence of huge cystic endometriosis by the recovery of menstrual period after kidney transplantation.
Collapse
Affiliation(s)
- H P Hwang
- Department of Surgery, Research Institute of Clinical Medicine, Chonbuk National University Medical School, Jeonju, Republic of Korea
| | - H C Yu
- Department of Surgery, Research Institute of Clinical Medicine, Chonbuk National University Medical School, Jeonju, Republic of Korea
| | - H S Park
- Department of Pathology, Research Institute of Clinical Medicine, Chonbuk National University Medical School, Jeonju, Republic of Korea
| | - J S Song
- Department of Radiology, Research Institute of Clinical Medicine, Chonbuk National University Medical School, Jeonju, Republic of Korea
| | - K P Kang
- Department of Internal Medicine, Research Institute of Clinical Medicine, Chonbuk National University Medical School, Jeonju, Republic of Korea
| | - W Kim
- Department of Internal Medicine, Research Institute of Clinical Medicine, Chonbuk National University Medical School, Jeonju, Republic of Korea
| | - S K Park
- Department of Internal Medicine, Research Institute of Clinical Medicine, Chonbuk National University Medical School, Jeonju, Republic of Korea
| | - S Lee
- Department of Internal Medicine, Research Institute of Clinical Medicine, Chonbuk National University Medical School, Jeonju, Republic of Korea.
| |
Collapse
|
22
|
Choi ST, Lee HW, Song JS, Lee SK, Park YB. Analysis of rheumatoid factor according to various hepatitis B virus infectious statuses. Clin Exp Rheumatol 2014; 32:168-173. [PMID: 24143967] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2013] [Accepted: 09/09/2013] [Indexed: 06/02/2023]
Abstract
OBJECTIVES Rheumatoid factor (RF) can be seen in hepatitis B virus (HBV) infection. We investigated RF positive rates according to various HBV infectious statuses and vaccination, and the relationship between RF titers and serum HBV DNA levels. METHODS We examined 13,670 individuals who visited the Severance Hospital in Seoul, Korea, for a routine health check-up, and obtained serum samples from all individuals. RESULTS RF was positive in 3.5% of all subjects, and HBsAg was positive in 4.3%. HBsAg was positive in 21.7% of all RF positive subjects. RF was positive in 17.5% of the HBsAg positive group, while it was positive in 2.9% of the HBsAg negative group (p<0.001). The RF positive rate was increased in positive HBsAg, female sex, and older age. The RF positive rate was lower in those who had anti-HBs after HBV vaccination than in HBsAg positive subjects (2.7% vs. 17.5%, p<0.001). Among the RF positive patients, the RF titer in HBsAg positive patients were higher than that in HBsAg negative patients (159.7±217.1IU/mL vs. 83.0±179.2 IU/mL, p=0.001). The load of HBV DNA may be closely correlated with RF titer in patients with chronic hepatitis B (r=0.508, p=0.005). CONCLUSIONS Persistent HBV infection is an important cause for the positive RF in HBV endemic areas. Hepatitis B viral load is associated with RF titer. HBV vaccination may reduce the risk of RF formation.
Collapse
Affiliation(s)
- S T Choi
- Department of Internal Medicine, Chung-Ang University College of Medicine, Seoul, South Korea.
| | | | | | | | | |
Collapse
|
23
|
Lee S, Moon CM, Kim YJ, Cho JH, Kim HM, Han KJ, Cho HG, Lee SW, Oh HE, Song JS, Yi SY, Son NH. Diagnostic accuracy of narrow band imaging for predicting colon polyp histology can be affected by polyp characteristics. Hepatogastroenterology 2014; 60:1028-34. [PMID: 23574638 DOI: 10.5754/hge13015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND/AIMS Narrow band imaging (NBI) is an optical endoscopic technique for predicting polyp histology during colonoscopy. However, it has not been elucidated the impact of polyp characteristics on the diagnostic capabilities of NBI. We aimed to evaluate which polyp characteristics can influence the diagnostic accuracy of NBI for discriminating neoplastic from non-neoplastic colorectal polyps. METHODOLOGY A total of 232 colorectal polyps from 134 patients undergoing screening or surveillance colonoscopy were retrospectively analyzed. White light imaging (WLI) and NBI images of polyps were assessed by two experienced endoscopists and two trainees and then compared with histopathology. RESULTS When classified according to polyp morphology, NBI as well as WLI had a significantly lower sensitivity and diagnostic accuracy for non-polypoid lesions than for polypoid lesions in both experienced and trainee groups. In contrast, the specificity of NBI and WLI for non-polypoid lesions was higher than that for polpyoid lesions. As for polyp size, the diagnostic accuracy of NBI for polyps ≤5mm was significantly lower than for polyps of 6 to 9mm or ≤10mm in the experienced group. CONCLUSIONS NBI had a significantly lower diagnostic accuracy for predicting polyp histology in non-polypoid or diminutive colorectal lesions.
Collapse
|
24
|
Song JS, Lee SH, Jin DK, Kim SH. A case report of rare XXY/XX mosaicism in a phenotypic male with Klinefelter syndrome and mediastinal germ cell tumor. Genet Couns 2014; 25:215-220. [PMID: 25059022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Klinefelter syndrome (KS) is a common sex chromosome disorder and is characterized by small, firm testes with hyalinization of the seminiferous tubules, elevated gonadotropins and azoospermia. Among karyotypic variants of KS, mosaicism 47,XXY/46,XX is extremely rare. We report here a case of an 18-year-old boy with a mosaic 47,XXY/46,XX karyotype of peripheral blood diagnosed as KS. The boy presented with anterior mediastinal mass which was confirmed as combined carvenous lymphangioma and mixed germ cell tumor by histologic examination of resected tissue. He had the male phenotype, however, azoospermia was incidentally detected on sperm banking analysis, performed prior to chemotherapy for mixed germ cell tumor. He had small and firm testes, mild gynecomastia, collectively tanner stage IV, mild hypergonadotropic hypogonadism and no evidence of true hermaphroditism. This report presents a rare case of mosaicism 47,XXY/46,XX karyotype in a phenotypic male with KS and mediastinal germ cell tumors. Based on what we experienced and review of the literature, cytogenetic analysis is recommended when physicians are confronted with a young patient with mediastinal germ cell tumor.
Collapse
|
25
|
Seok JY, Lee Y, Lee H, Yi SY, Oh HE, Song JS. Human cutaneous protothecosis: report of a case and literature review. Korean J Pathol 2013; 47:575-8. [PMID: 24421852 PMCID: PMC3887161 DOI: 10.4132/koreanjpathol.2013.47.6.575] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [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: 04/18/2013] [Revised: 05/18/2013] [Accepted: 05/24/2013] [Indexed: 11/17/2022]
Abstract
The Prototheca species is achlorophyllic algae and rarely causes human infection. Human protothecosis presents clinically as a cutaneous infection, olecranon bursitis, and disseminated systemic disease. We report a case of human cutaneous protothecosis involving the left wrist. A 68-year-old man presented with an ill-defined erythematous lesion with crust at the dorsal aspect of his left wrist. A punch biopsy was performed to reveal the histologic features of granulomatous inflammation with necrosis at the upper dermis, containing Prototheca organisms, of which, the characteristic features were highlighted by special staining. Through a molecular study, the Prototheca zopfii species was identified.
Collapse
Affiliation(s)
- Jae Yeon Seok
- Department of Pathology, Gachon University Gil Medical Center, Incheon, Korea
| | - Yoonho Lee
- Kwandong University College of Medicine, Gangneung, Korea
| | - Hyukmin Lee
- Department of Laboratory Medicine, Kwandong University College of Medicine, Gangneung, Korea
| | - Sang Yeop Yi
- Department of Pathology, Kwandong University College of Medicine, Gangneung, Korea
| | - Hwa Eun Oh
- Department of Pathology, Kwandong University College of Medicine, Gangneung, Korea
| | - Ji-Sun Song
- Department of Pathology, Kwandong University College of Medicine, Gangneung, Korea
| |
Collapse
|
26
|
Yoon YA, Song JS, Lee SY, Yoon CE, Kang ES. The novel allele HLA-C*03:04:36 identified by sequence-based typing. ACTA ACUST UNITED AC 2013; 82:353-4. [PMID: 24102105 DOI: 10.1111/tan.12197] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2013] [Accepted: 08/12/2013] [Indexed: 11/28/2022]
Abstract
The new allele, HLA-C*03:04:36, differs from C*03:04:01:01 by one nucleotide substitution at codon 207 (GGC→GGT).
Collapse
Affiliation(s)
- Y A Yoon
- Department of Laboratory Medicine and Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | | | | | | | | |
Collapse
|
27
|
Lee YK, Jun HJ, Nahm JH, Lim TS, Park JS, Ahn JB, Rha SY, Chung HC, Oh HE, Song JS, Yang WI, Kim HS. Therapeutic strategies for well-differentiated papillary mesothelioma of the peritoneum. Jpn J Clin Oncol 2013; 43:996-1003. [PMID: 23964112 DOI: 10.1093/jjco/hyt117] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
OBJECTIVE Well-differentiated papillary mesothelioma is an uncommon subtype of mesothelioma with a frequently indolent course, although it occasionally manifests in a more aggressive form. To establish a treatment strategy for this rare disease, we report the clinical characteristics and outcomes of 15 patients with well-differentiated papillary mesothelioma. METHODS All pathologically diagnosed well-differentiated papillary mesothelioma cases were reviewed between 1998 and 2012. RESULTS Of the 15 cases, 8 and 7 presented with single and multiple lesions, respectively. All cases with single lesions were asymptomatic, while 4 out of the 7 cases with multiple lesions were symptomatic. After tumor excision, none of the eight single-lesion cases experienced tumor recurrence. Among the other seven cases with multiple lesions, only one patient with disseminated lesions died due to disease burden. Five patients with multiple lesions received cisplatin-based intravenous or intraperitoneal chemotherapy, with a mix of complete (n= 2) and partial (n= 2) responses observed. Of particular note, one patient receiving cisplatin and pemetrexed combination chemotherapy experienced complete tumor resolution without any serious toxicity. CONCLUSIONS We recommend different treatment strategies based on the disease status. If the tumor is completely resectable, an excisional biopsy seems to be sufficient. If complete resection is unavailable for the asymptomatic patient with a localized tumor extent, close follow-up is an appropriate option. When the tumor is extensive or accompanied by symptoms, chemotherapy should be strongly considered.
Collapse
Affiliation(s)
- Young Ki Lee
- *Division of Medical Oncology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea.
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
28
|
Oh BR, Song JS, Choi EH, Noh HK, Choe PG. P226: An engaged intervention to decrease central line-asssociated infections in the ICU. Antimicrob Resist Infect Control 2013. [PMCID: PMC3687756 DOI: 10.1186/2047-2994-2-s1-p226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
29
|
Shim DB, Song JS, Baek SJ. An ectopic hamartomatous thymoma. Auris Nasus Larynx 2012; 39:110-3. [DOI: 10.1016/j.anl.2011.07.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2011] [Revised: 07/28/2011] [Accepted: 07/29/2011] [Indexed: 11/16/2022]
|
30
|
Kim SK, Park CK, Lee SY, Song JS, Park SH, Kim YK. Effects of Rosiglitazone on the Expression of PPAR-γ and on the Production of IL-6 and IL-8 in Acute Lung Injury Model Using Human Pulmonary Epithelial Cells. TROP J PHARM RES 2011. [DOI: 10.4314/tjpr.v10i6.5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
|
31
|
Kim SK, Park CK, Lee SY, Song JS, Park SH, Kim YK. Effects of Rosiglitazone on the Expression of PPAR-γ and the Production of IL-6 and IL-8 in Acute Lung Injury Model Using Human Pulmonary Epithelial Cells. TROP J PHARM RES 2011. [DOI: 10.4314/tjpr.v10i5.4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
|
32
|
Affiliation(s)
- Ji-Sun Song
- Department of Pathology, Kwandong University College of Medicine, Goyang, Korea
| | - Soon-Hee Jung
- Department of Pathology, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Sang Yeop Yi
- Department of Pathology, Kwandong University College of Medicine, Goyang, Korea
| | - Hwa Eun Oh
- Department of Pathology, Kwandong University College of Medicine, Goyang, Korea
| | - Mee Yon Cho
- Department of Pathology, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Kwang Hwa Park
- Department of Pathology, Yonsei University Wonju College of Medicine, Wonju, Korea
| |
Collapse
|
33
|
Cho HK, Song JS, Kang WH, Ro BI. Pigmented trichoblastoma arising from the nevus sebaceous: a rare case in Korea. Ann Dermatol 2009; 21:406-8. [PMID: 20523834 DOI: 10.5021/ad.2009.21.4.406] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [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: 07/28/2008] [Revised: 04/08/2009] [Accepted: 05/11/2009] [Indexed: 11/08/2022] Open
Abstract
Trichoblastoma is occasionally observed in association with a pre-existing nevus sebaceous in the Korean literature. However, there has been no report on the pigmented type. Herein, we report the first Korean case of a pigmented trichoblastoma arising from the nevus sebaceous on the forehead. A 28-year-old male presented with a dark nodular lesion within a yellowish plaque on the forehead. The surrounding yellowish plaque on the forehead had existed since birth. The central, dark-pigmented nodule began to appear three years ago and enlarged gradually. Histopathologic findings of central pigmented lesion showed heavy melanin deposits within and around the tumor nests. Complete excision was made as treatment.
Collapse
Affiliation(s)
- Han Kyoung Cho
- Department of Dermatology, Myongji Hospital, Kwandong University College of Medicine, Goyang, Korea
| | | | | | | |
Collapse
|
34
|
Kim SJ, Kim JS, Kim SC, Kim YK, Kim YK, Kang JY, Yoon HK, Song JS, Lee SH, Moon HS, Kim JW, Kim KH, Kim CH, Shim BY, Kim HK. A multicenter phase II study of belotecan, new camptothecin analogue, in patients with previously untreated extensive stage disease small cell lung cancer. Lung Cancer 2009; 68:446-9. [PMID: 19683359 DOI: 10.1016/j.lungcan.2009.07.002] [Citation(s) in RCA: 15] [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] [Received: 01/29/2009] [Revised: 06/26/2009] [Accepted: 07/04/2009] [Indexed: 10/20/2022]
Abstract
Belotecan (Camtobell, CKD602) is a new camptothecin derivative antitumor agent that belongs to the topoisomerase inhibitors. The aim of this phase II study was to evaluate the efficacy and safety of single agent belotecan in patients with small cell lung cancer (SCLC). Patients with previously untreated extensive stage disease (ED) SCLC were entered into the study. Belotecan was given by daily intravenous infusion at 0.5mg/m(2)/day for 5 consecutive days, every 3 weeks. 62 patients were enrolled in this study. The overall response rate to chemotherapy on an intention-to-treat basis was 53.2%. The median overall survival was 10.4 months, the median time to progression 4.6 months, and the 1-year survival rate 49.9%. The most common toxicity was hematologic. Grade 3/4 neutropenia occurred in 71.0% of patients and grade 3/4 thrombocytopenia 12.9%. Non-hematologic toxicity of grade 3 or 4 was low. The results suggest that belotecan is relatively active and well tolerable as single agent in patients with ED SCLC. Further investigations with platinum or other active agents are needed.
Collapse
Affiliation(s)
- S J Kim
- Division of Pulmonology, Department of Internal Medicine, Kangnam St. Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
35
|
Song JS, Jang SJ, Lee JJ, Lee JH, Bae IK, Jeong BC, Cha SS, Lee JH, Hong SK, Lee SH. Association of the bla(CMY-10) gene with a novel complex class 1 integron carrying an ISCR1 element in clinical isolates from Korea. Clin Microbiol Infect 2009; 16:1013-7. [PMID: 19681956 DOI: 10.1111/j.1469-0691.2009.03002.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The bla(CMY-10) gene responsible for β-lactam resistance was located on a new complex class 1 integron within a conjugative plasmid. The sul1-type class 1 integron, containing an aadA2a gene cassette, was identified upstream of bla(CMY-10). A unique gene array (yqgF-yqgE-gshB-orf97--orf105) was identified downstream of bla(CMY-10.).
Collapse
Affiliation(s)
- J S Song
- Department of Biological Sciences, Drug Resistance Proteomics Laboratory, Myongji University, Yongin, Gyeonggido, Korea
| | | | | | | | | | | | | | | | | | | |
Collapse
|
36
|
Lee JW, Cha DK, Oh YK, Ko KB, Song JS. Zero-valent iron pretreatment for detoxifying iodine in liquid crystal display (LCD) manufacturing wastewater. J Hazard Mater 2009; 164:67-72. [PMID: 18799266 DOI: 10.1016/j.jhazmat.2008.07.147] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2008] [Revised: 07/28/2008] [Accepted: 07/28/2008] [Indexed: 05/26/2023]
Abstract
This study investigated reductive transformation of iodine by zero-valent iron (ZVI), and the subsequent detoxification of iodine-laden wastewater. ZVI completely reduced aqueous iodine to non-toxic iodide. Respirometric bioassay illustrated that the presence of iodine increase the lag phase before the onset of oxygen consumption. The length of lag phase was proportional to increasing iodine dosage. The reduction products of iodine by ZVI did not exhibit any inhibitory effect on the biodegradation. The cumulative biological oxidation associated with iodine toxicity was closely fitted to Gompertz model. When iodine-laden wastewater was continuously fed to a bench-scale activated sludge unit, chemical oxygen demand (COD) removal efficiencies decreased from above 90% to below 80% along with a marked decrease in biomass concentration. On the other hand, the COD removal efficiency and biomass concentration remained constant in the integrated ZVI-activated sludge system. Respirometric bioassay with real iodine-laden LCD manufacturing wastewater demonstrated that ZVI was effective for detoxifying iodine and consequently enhancing biodegradability of wastewater. This result suggested that ZVI pretreatment may be a feasible option for the removal of iodine in LCD processing wastewater, instead of more costly processes such as adsorption and chemical oxidation, which are commonly in the iodine-laden LCD wastewater treatment facility.
Collapse
Affiliation(s)
- J W Lee
- Department of Environmental Engineering, College of Science and Technology, Korea University, Jochiwon-eup, Yeongi-gun, Chungnam 339-700, Republic of Korea.
| | | | | | | | | |
Collapse
|
37
|
Abstract
Vitiligo is a common skin disease, but its pathogenesis has not been fully determined, though an autoimmune etiology is considered likely. Kawasaki disease (KD) is an acute multisystem vasculitis of childhood associated with coronary arteriopathy, and is diagnosed based on clinical criteria. Furthermore, vitiligo has been associated with several other diseases, but no report has been issued about the relationship between vitiligo and Kawasaki's disease. The author's report the case of an 8-year-old male child that presented with depigmented lesions, which developed from the desquamative skin lesions of Kawasaki's disease.
Collapse
Affiliation(s)
- Han Kyoung Cho
- Department of Dermatology, Myongji Hospital, Kwandong University College of Medicine, Goyang, Korea
| | - Lucy Youngmin Eun
- Department of Pediatric Cardiology, Myongji Hospital, Kwandong University College of Medicine, Goyang, Korea
| | - Ji-Sun Song
- Department of Pathology, Myongji Hospital, Kwandong University College of Medicine, Goyang, Korea
| | - Won Hyoung Kang
- Department of Dermatology, Myongji Hospital, Kwandong University College of Medicine, Goyang, Korea
| | - Byung In Ro
- Department of Dermatology, Myongji Hospital, Kwandong University College of Medicine, Goyang, Korea
| |
Collapse
|
38
|
Abstract
Fudosteine is a novel mucoactive agent, although little is known about how fudosteine decreases mucin production. The present study examined the effects of fudosteine on MUC5AC mucin synthesis and cellular signalling. An animal model of lipopolysaccharide (LPS)-induced inflammation and a bronchial epithelial cell line model of tumour necrosis factor (TNF)-alpha-induced inflammation were used. Fudosteine was administered before stimulation with LPS or TNF-alpha. The MUC5AC mucin levels were assayed and the expression of the MUC5AC gene was measured. Western blotting was carried out for the detection of phosphorylated epidermal growth factor receptor (p-EGFR), phosphorylated p38 mitogen-activated protein kinase (p-p38 MAPK) and phosphorylated extracellular signal-related kinase (p-ERK). MUC5AC mucin synthesis and the expression of the MUC5AC gene were increased by LPS in rats or TNF-alpha in NCI-H292 cells; these effects were inhibited by fudosteine treatment. After stimulation with LPS or TNF-alpha, the expression of p-EGFR, p-p38 MAPK and p-ERK were detected. Fudosteine treatment reduced the expression levels of p-p38 MAPK and p-ERK in vivo and of p-ERK in vitro. The present results suggest fudosteine inhibits MUC5AC mucin hypersecretion by reducing MUC5AC gene expression and the effects of fudosteine are associated with the inhibition of extracellular signal-related kinase and p38 mitogen-activated protein kinase in vivo and extracellular signal-related kinase in vitro.
Collapse
Affiliation(s)
- C K Rhee
- Dept of Internal Medicine, St Mary's Hospital, The Catholic University Medical College, #62 Yeoi-Do Dong, Young Dung Po Gu, Seoul, Korea
| | | | | | | | | | | | | | | | | |
Collapse
|
39
|
Song JS, Huh KH, Park J, Ju MK, Kim MS, Kim YS. Effects of inosine monophosphate dehydrogenase inhibition on high glucose-induced cellular reactive oxygen species in mesangial cells. Transplant Proc 2008; 40:464-6. [PMID: 18374103 DOI: 10.1016/j.transproceed.2008.01.016] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Mesangial cell extracellular matrix (ECM) synthesis plays an important role in chronic renal diseases including chronic renal allograft dysfunction and diabetic nephropathy. Although inosine monophosphate dehydrogenase 2 (IMPDH2), as a target of mycophenolic acid (MPA), is important for de novo guanosine synthesis in lymphocytes, mesenchymal cells are not wholly dependent on it. To explore the importance of IMPDH2 on the inhibitory effects of MPA in mesangial cells (MC), we compared the effects of MPA and IMPDH2 siRNA on high glucose (HG)-induced fibronectin secretion and cellular reactive oxygen species (ROS). Mouse mesangial cells (MMC) were stimulated with HG (30 mmol/L D-glucose) in the presence or absence of MPA pretreatment or IMPDH2 siRNA transfection. Fibronectin secretion was measured by Western blot analysis, and dichlorofluorescein (DCF)-sensitive cellular ROS assessed by flow cytometry. HG increased fibronectin secretion by 1.8-fold at 24 hours and DCF-sensitive cellular ROS by 1.5-fold at 1 hour. MPA at 10 micromol/L totally inhibited HG-induced fibronectin secretion and cellular ROS in MMC. However, IMPDH2 siRNA only partially suppressed HG-induced fibronectin secretion and cellular ROS. These results suggested that MPA may inhibit HG-induced fibronectin secretion partially through inhibiting cellular ROS and the inhibition of IMPDH2 may be partially involved in the mechanism of MPA.
Collapse
Affiliation(s)
- J S Song
- Research Institute for Transplantation, Seoul, Korea
| | | | | | | | | | | |
Collapse
|
40
|
Cha EY, Kim KW, Choi YJ, Song JS, Cho KJ, Lee MG. Multicystic cavernous haemangioma of the liver: ultrasonography, CT, MR appearances and pathological correlation. Br J Radiol 2008; 81:e37-9. [PMID: 18238911 DOI: 10.1259/bjr/36041107] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Among the hepatic haemangiomas with atypical features when studied radiologically, the multicystic type is extremely rare. We report a case of multicystic hepatic haemangioma in a 62-year-old woman, which was found incidentally during ultrasound screening. Because the tumour showed atypical features on ultrasonography, CT and MRI, the correct diagnosis was not made until the surgery. In this report, the atypical radiological findings are illustrated and correlated with pathological findings.
Collapse
Affiliation(s)
- E-Y Cha
- Department of Radiology and Research Institution of Radiology, University of Ulsan College of Medicine-Asan Medical Centre, 388-1 Pungnap-2 dong, Songpa-gu, Seoul 138-736, Korea
| | | | | | | | | | | |
Collapse
|
41
|
Park NH, Park CS, Lee EJ, Kim MS, Ryu JA, Bae JM, Song JS. Ultrasonographic findings identifying the faecal-impacted appendix: differential findings with acute appendicitis. Br J Radiol 2007; 80:872-7. [PMID: 17875592 DOI: 10.1259/bjr/80553348] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
The aim of this study was to identify ultrasonographic findings that show the normal faecal-impacted appendix, in order to avoid unnecessary surgery via a misdiagnosis of acute appendicitis. Of 160 patients who underwent ultrasonography between January 2004 and July 2005 for right lower quadrant pain, 22 cases (including 7 cases confirmed pathologically and 15 confirmed clinically and on follow-up ultrasonography) were diagnosed as a normal faecal-impacted appendix. The criteria that we used to distinguish a faecal-impacted appendix from acute appendicitis include preservation of the normal wall layering of the appendix, maximum mural thickness, presence of peri-appendiceal fat infiltration and increased blood flow in the appendiceal wall. The maximum measured outer diameter of a normal faecal-impacted appendix was 0.54-1.03 cm, with a mean diameter of 0.68 cm. The maximum mural thickness ranged from 0.08 cm to 0.26 cm, with a mean thickness of 0.15 cm. The normal wall layers of the appendix were preserved and no evidence was seen of peri-appendiceal fat infiltration in any case. No demonstrably increased blood flow in the appendiceal wall was observed. In conclusion, faecal impaction increases the outer transverse diameter of the normal appendix, frequently leading to a misdiagnosis of acute appendicitis. Recognition of preservation of the normal layering of the appendiceal wall, smaller maximal outer diameter, thinner maximal mural thickness, the absence of peri-appendiceal mesenteric infiltration and no demonstrably increased blood flow in the appendiceal wall should help to prevent unnecessary surgery.
Collapse
Affiliation(s)
- N H Park
- Department of Diagnostic Radiology, Myongji Hospital, Kwandong University, College of Medicine,
| | | | | | | | | | | | | |
Collapse
|
42
|
Jung SH, Chong Y, Kim HR, Chung YK, Koh SB, Yong SJ, Park TI, Chung MJ, Kim YM, Song JS. P1-133: Epidemiologic and Clinicopathologic Characteristics of Malignant Mesothelioma through Surveillance System in Korea. J Thorac Oncol 2007. [DOI: 10.1097/01.jto.0000283747.85598.3d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
43
|
Koo DH, Chang HM, Jung JY, Song JH, Lee JL, Ryu MH, Kim TW, Yook JH, Song JS, Lee JS, Kang YK. Cutaneous metastasis resembling acute dermatitis in patient with advanced gastric cancer. Clin Exp Dermatol 2007; 32:284-6. [PMID: 17263831 DOI: 10.1111/j.1365-2230.2007.02361.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The most common metastatic sites from gastric cancer are the liver, intra-abdominal lymph nodes, ovary and peritoneal cavity. Cutaneous metastasis of gastric cancer is rare, and most cutaneous metastases are typically solitary, nodular, have a firm consistency, and are red or hyperpigmented. Thus, cutaneous metastasis is easily distinguished from other skin disease. We report a case of a 60-year-old woman with cutaneous metastasis of gastric cancer, whose facial skin showed painless pruritic eczema, resembling acute dermatitis. She had earlier undergone a total gastrectomy for advanced gastric cancer in our hospital. After 14 months, she developed eczematous facial lesions; the presumptive diagnosis was acute dermatitis. However, skin biopsy unexpectedly revealed cutaneous metastasis of gastric cancer. After 6 months of systemic chemotherapy with capecitabine and cisplatin, the cutaneous metastasis was markedly improved and a clinically complete remission was accomplished.
Collapse
Affiliation(s)
- D H Koo
- Department of Internal Medicine (Division of Oncology), Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Korea
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
44
|
Noh H, Kim JS, Han KH, Lee GT, Song JS, Chung SH, Jeon JS, Ha H, Lee HB. Oxidative stress during peritoneal dialysis: implications in functional and structural changes in the membrane. Kidney Int 2006; 69:2022-8. [PMID: 16641917 DOI: 10.1038/sj.ki.5001506] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.1] [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: 12/17/2022]
Abstract
Progressive peritoneal fibrosis, membrane hyperpermeability, and ultrafiltration failure have been observed in patients on long-term peritoneal dialysis (PD). The present study tested the hypothesis that reactive oxygen species (ROS) generated by conventional PD solution (PDS) mediate functional and structural alterations of peritoneal membrane in vivo. Sprague-Dawley rats were randomized to control, PDS, PDS with an antioxidant, and PDS with an angiotensin II (Ang II) receptor blocker. Commercial PDS containing 3.86% glucose (20-30 ml) with or without N-acetylcystein (NAC) 10 mM or losartan 5 mg/kg was administered intraperitoneally twice a day for 12 weeks. Control rats received sham injection. Rats treated with PDS had significantly lower drain volume and D(4)/D(0) glucose, but higher D(4)/P(4) creatinine and increased membrane thickness and endothelial NOS (eNOS) expression compared to control rats. Omental transforming growth factor (TGF)-beta1, vascular endothelial growth factor (VEGF), collagen I, and heat-shock protein (hsp) 47 expression and lipid peroxide levels and dialysate VEGF and Ang II concentrations were significantly increased in rats treated with PDS compared to control. All of these changes were prevented by both NAC and losartan. In conclusion, the present study demonstrates that ROS generated by conventional PDS are, in large part, responsible for peritoneal fibrosis and membrane hyperpermeability. We suggest that antioxidants or Ang II receptor blockers may allow better preservation of the structural and functional integrity of the peritoneal membrane during long-term PD.
Collapse
Affiliation(s)
- H Noh
- Hyonam Kidney Laboratory, Soon Chun Hyang University, Seoul, Korea
| | | | | | | | | | | | | | | | | |
Collapse
|
45
|
Park DI, Kim YH, Kim HS, Kim WH, Kim TI, Kim HJ, Yang SK, Byeon JS, Lee MS, Jung IK, Chung MK, Jung SA, Jeen YT, Choi JH, Choi H, Han DS, Song JS. Diagnostic yield of advanced colorectal neoplasia at colonoscopy, according to indications: an investigation from the Korean Association for the Study of Intestinal Diseases (KASID). Endoscopy 2006; 38:449-55. [PMID: 16767578 DOI: 10.1055/s-2006-925227] [Citation(s) in RCA: 13] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
BACKGROUND AND STUDY AIMS The factors that more accurately predict the detection of colorectal cancers and adenomas at colonoscopy are different. We conducted a prospective multicenter study to evaluate which indications were most closely associated with advanced colorectal neoplasm (CRN), including colorectal cancer, in a group of patients undergoing colonoscopy. PATIENTS AND METHODS The 17 468 patients were enrolled in this study between July 2003 and March 2004, from 11 tertiary medical centers in Korea. They were recruited according to 11 itemized colonoscopic indications. The term "advanced adenoma" refers here to tubular adenomas of diameter of 11 mm or more, or to tubulovillous, villous, or severely dysplastic adenomas, irrespective of their size. Cancer was defined as the invasion of malignant cells beyond the muscularis mucosa. Advanced CRN was defined as advanced adenoma or invasive cancer. RESULTS Advanced CRN was found in 1227/17 307 patients (1176 advanced adenomas plus 51 carcinomas, 7.1 %). According to univariate and multivariate analysis, the factors associated with advanced CRN included age >60 years (odds ratio (OR) 2.1, 95 % confidence interval (CI) 1.8 - 2.4, P < 0.0001), male gender (OR 2.1, 95 %CI 1.7 - 2.7, P < 0.0001), referral for colonoscopy from primary care physician (OR 3.1, 95 %CI 2.5 - 3.7, P < 0.0001), and several other indications (OR 1.8, 95 %CI 1.5 - 2.3, P < 0.001). The yield of colonoscopy for advanced CRN was lower (2.2 %) than expected in patients with iron-deficiency anemia (OR 0.5, 95 %CI 0.2 - 0.9, P = 0.03). CONCLUSIONS Age, gender, and referral for colonoscopy from primary care physician constituted important independent predictors of advanced CRN in patients undergoing colonoscopy.
Collapse
Affiliation(s)
- D I Park
- Kangbuk Samsung Hospital, Sungkyunkwan [corrected] University School of Medicine, Seoul, South Korea
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
46
|
Kwak HJ, Song JS, No ZS, Song JH, Yang SD, Cheon HG. The inhibitory effects of roflumilast on lipopolysaccharide-induced nitric oxide production in RAW264.7 cells are mediated by heme oxygenase-1 and its product carbon monoxide. Inflamm Res 2006; 54:508-13. [PMID: 16389572 DOI: 10.1007/s00011-005-1386-1] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
OBJECTIVES Heme oxygenase-1 (HO-1) is an enzyme that degrades heme into biliverdin, free iron, and carbon monoxide (CO). This enzyme is known to have cytoprotective and anti-inflammatory effects. In this study, we investigated whether roflumilast, a newly developed specific phosphodiesterase 4 (PDE4) inhibitor, mediates some of its anti-inflammatory effects by blocking nitric oxide (NO) and tumor necrosis factor alpha (TNF-alpha) via the induction of HO-1 expression in macrophages. METHODS The expression of iNOS and HO-1 was analyzed by western blot analysis. The production of NO and TNF-alpha was assayed by Greiss and ELISA, respectively. RESULTS Roflumilast markedly suppressed LPS-induced NO and TNF-alpha production and these phenomena were correlated with the induction of HO-1 protein levels. Moreover, the inhibitory effects of roflumilast on NO production were abrogated by a HO-1 inhibitor and a CO scavenger. Tricarbonyldichlrororuthenium(II) dimer, a CO releasing molecule significantly suppressed NO production. CONCLUSIONS These results suggested that roflumilast exerts its anti-inflammatory effects in macrophages through a novel mechanism that involves the action of HO-1 and its product, CO.
Collapse
Affiliation(s)
- H J Kwak
- Laboratory of Molecular Pharmacology and Physiology, Medicinal Science Division, Korea Research Institute of Chemical Technology, 100 Jang-Dong, Yusung, Taejon, 305-343
| | | | | | | | | | | |
Collapse
|
47
|
Jeong SH, Bae IK, Kwon SB, Lee JH, Song JS, Jung HI, Sung KH, Jang SJ, Lee SH. Dissemination of transferable CTX-M-type extended-spectrum beta-lactamase-producing Escherichia coli in Korea. J Appl Microbiol 2005; 98:921-7. [PMID: 15752339 DOI: 10.1111/j.1365-2672.2004.02526.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.7] [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: 11/29/2022]
Abstract
AIMS Among 365 Escherichia coli isolated in 2003, 31 cefotaxime-resistant isolates were obtained from clinical specimens taken from adults hospitalized in Busan, Korea. Six extended-spectrum beta-lactamase (ESBL)-producing isolates were investigated further to determine the mechanism of resistance. METHODS AND RESULTS These isolates were analysed by antibiotic susceptibility testing, pI determination, plasmid profiles, transconjugation test, PCR-restriction fragment length polymorphism (RFLP), enterobacterial repetitive consensus (ERIC)-PCR and DNA sequencing. All six of these isolates were found to contain the CTX-M-type ESBL genes. Five clinical isolates and their transconjugants produced CTX-M-3. One clinical isolate (K17391) and its transconjugant (trcK17391) produced CTX-M-15. Five clinical isolates also produced another TEM-1. One clinical isolate (K12776) also contained another TEM-52. CTX-M-3 ESBL gene was responsible for the resistance to piperacillin, cephalothin, cefotaxime, cefepime and aztreonam. CTX-M-15 or TEM-52 was especially responsible for the resistance to ceftazidime. CONCLUSIONS These results appear to represent the in vivo evolution of CTX-M-type beta-lactamase genes (bla(CTX-M-3) --> bla(CTX-M-15)) under the selective pressure of antimicrobial therapy (especially ceftazidime). PCR-RFLP is a reliable method to discriminate CTX-M-15 gene from CTX-M-3 gene. ERIC-PCR analysis revealed that dissemination of CTX-M-3 was not due to a clonal outbreak of a resistant strain but to the intra-species spread of resistance to piperacillin, cephalothin, cefotaxime, cefepime and aztreonam in Korea. SIGNIFICANCE AND IMPACT OF THE STUDY This is the first report of the occurrence of CTX-M-1 cluster ESBLs in Korea. A more comprehensive survey of these ESBL types from Korea is urgently needed because of the in vivo evolution of CTX-M-15 from CTX-M-3. The emergence of these CTX-M-type ESBLs suggests that diagnostic laboratories should screen for ESBLs with ceftazidime as well as cefotaxime; they should still perform clavulanate synergy tests on resistant isolates.
Collapse
Affiliation(s)
- S H Jeong
- Department of Laboratory Medicine and Graduate School of Public Health, Kosin University College of Medicine, Busan, Republic of Korea
| | | | | | | | | | | | | | | | | |
Collapse
|
48
|
Abstract
The case history is presented of a patient with pathologically proven dendriform pulmonary ossification and rare earth pneumoconiosis confirmed by analytical transmission electron microscopy. This is thought to be the first report of this association.
Collapse
Affiliation(s)
- H K Yoon
- Division of Pulmonary and Critical Care, Department of Medicine, College of Medicine, Catholic University of Korea, Seoul, Korea
| | | | | | | | | | | |
Collapse
|
49
|
Song JS, Court LE, Cormack RA. SU-FF-T-291: Monte Carlo Calculation of Rectal Dose When Using An Endorectal Balloon During Prostate Radiation Therapy. Med Phys 2005. [DOI: 10.1118/1.1998020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
|
50
|
Jeong SH, Bae IK, Kwon SB, Lee JH, Jung HI, Song JS, Jeong BC, Kim SJ, Lee SH. Investigation of extended-spectrum beta-lactamases produced by clinical isolates of Klebsiella pneumoniae and Escherichia coli in Korea. Lett Appl Microbiol 2004; 39:41-7. [PMID: 15189286 DOI: 10.1111/j.1472-765x.2004.01537.x] [Citation(s) in RCA: 13] [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: 11/27/2022]
Abstract
AIMS Isolates obtained from various regions in Korea in 2002 were identified and their susceptibility to extended-spectrum cephalosporins, monobactams and/or cephamycins was studied along with any production of extended-spectrum beta-lactamases (ESBLs). METHODS AND RESULTS Bacteria identified by the conventional techniques and Vitek GNI card were Klebsiella pneumoniae and Escherichia coli. Using disk diffusion and double-disk synergy tests, we found that 39.2% of strains produced ESBLs. About 52% of isolates transferred resistance to ceftazidime by conjugation. Banding patterns of PCR amplification with the designed primers showed that 837- and 259-bp fragments specific to bla(TEM) genes were amplified in 63.3% of strains. 929- and 231-bp fragments (bla(SHV)), 847- and 520-bp fragments (bla(CMY)), 597- and 858-bp fragments (bla(CTX-M)) were amplified in 61.5, 17.3 and 7.7% of strains respectively. About 51.9% of strains contained more than two types of beta-lactamase genes. Especially, one strain contained bla(TEM), bla(CMY) and bla(CTX-M) genes. SIGNIFICANCE Resistance mechanisms to beta-lactams, comprising mostly ESBL production, lead to the resistance against even recently developed beta-lactams in enterobacteria, which is now a serious threat to antibiotic therapy. The high prevalence of bla(CMY) genes and multidrug-resistant genes may also make therapeutic failure and lack of eradiation of these strains by extended-spectrum cephalosporins or cephamycins.
Collapse
Affiliation(s)
- S H Jeong
- Department of Clinical Pathology, Kosin University College of Medicine, Pusan, South Korea
| | | | | | | | | | | | | | | | | |
Collapse
|