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Sakai K, Fuke H, Yoshimura K, Sasaki M, Abe K, Haino S, Hams T, Hasegawa M, Kim KC, Lee MH, Makida Y, Mitchell JW, Nishimura J, Nozaki M, Orito R, Ormes JF, Seo ES, Streitmatter RE, Thakur N, Yamamoto A, Yoshida T. Search for Antideuterons of Cosmic Origin Using the BESS-Polar II Magnetic-Rigidity Spectrometer. Phys Rev Lett 2024; 132:131001. [PMID: 38613296 DOI: 10.1103/physrevlett.132.131001] [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] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Revised: 10/21/2023] [Accepted: 01/10/2024] [Indexed: 04/14/2024]
Abstract
We searched for antideuterons (d[over ¯]'s) in the 4.7×10^{9} cosmic-ray events observed during the BESS-Polar II flight at solar minimum in 2007-2008 but found no candidates. The resulting 95% C.L. upper limit on the d[over ¯] flux is 6.7×10^{-5} (m^{2} s sr GeV/n)^{-1} in an energy range from 0.163 to 1.100 GeV/n. The result has improved by more than a factor of 14 from the upper limit of BESS97, which had a potential comparable to that of BESS-Polar II in the search for cosmic-origin d[over ¯]'s and was conducted during the former solar minimum. The upper limit of d[over ¯] flux from BESS-Polar II is the first result achieving the sensitivity to constrain the latest theoretical predictions.
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Affiliation(s)
- K Sakai
- NASA-Goddard Space Flight Center (NASA-GSFC), Greenbelt, Maryland 20771, USA
- Center for Research and Exploration in Space Science and Technology (CRESST)
| | - H Fuke
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (ISAS/JAXA), Sagamihara, Kanagawa 252-5210, Japan
| | - K Yoshimura
- Okayama University, Okayama, Okayama 700-8530, Japan
| | - M Sasaki
- NASA-Goddard Space Flight Center (NASA-GSFC), Greenbelt, Maryland 20771, USA
- Center for Research and Exploration in Space Science and Technology (CRESST)
| | - K Abe
- Kobe University, Kobe, Hyogo 657-8501, Japan
| | - S Haino
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - T Hams
- NASA-Goddard Space Flight Center (NASA-GSFC), Greenbelt, Maryland 20771, USA
- Center for Research and Exploration in Space Science and Technology (CRESST)
| | - M Hasegawa
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - K C Kim
- IPST, University of Maryland, College Park, Maryland 20742, USA
| | - M H Lee
- IPST, University of Maryland, College Park, Maryland 20742, USA
| | - Y Makida
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - J W Mitchell
- NASA-Goddard Space Flight Center (NASA-GSFC), Greenbelt, Maryland 20771, USA
| | - J Nishimura
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (ISAS/JAXA), Sagamihara, Kanagawa 252-5210, Japan
- The University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
| | - M Nozaki
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - R Orito
- Kobe University, Kobe, Hyogo 657-8501, Japan
| | - J F Ormes
- University of Denver, Denver, Colorado 80208, USA
| | - E S Seo
- IPST, University of Maryland, College Park, Maryland 20742, USA
| | - R E Streitmatter
- NASA-Goddard Space Flight Center (NASA-GSFC), Greenbelt, Maryland 20771, USA
| | - N Thakur
- NASA-Goddard Space Flight Center (NASA-GSFC), Greenbelt, Maryland 20771, USA
| | - A Yamamoto
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - T Yoshida
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (ISAS/JAXA), Sagamihara, Kanagawa 252-5210, Japan
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Kim HA, Kim KC, Lee H, Hong YM. Losartan Reduces Remodeling and Apoptosis in an Adriamycin-Induced Cardiomyopathy Rat Model. J Chest Surg 2023; 56:295-303. [PMID: 37574884 PMCID: PMC10480395 DOI: 10.5090/jcs.23.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 06/15/2023] [Accepted: 06/27/2023] [Indexed: 08/15/2023] Open
Abstract
Background The use of Adriamycin (ADR), also known as doxorubicin, as a chemotherapy agent is limited by its detrimental adverse effects, especially cardiotoxicity. Recent studies have emphasized the crucial role of angiotensin II (Ang-II) in the development of ADR-induced cardiomyopathy. This study aimed to explore the potential cardioprotective effects of losartan in a rat model of ADR-induced cardiomyopathy. Methods Male Sprague-Dawley rats were randomly divided into 3 groups: a control group (group C), an ADR-treated group (ADR 5 mg/kg/wk for 3 weeks via intraperitoneal injections; group A), and co-treatment of ADR with losartan group (same dose of ADR and losartan; 10 mg/kg/day per oral for 3 weeks; group L). Western blot analysis was conducted to demonstrate changes in brain natriuretic peptide, collagen 1, tumor necrosis factor (TNF)-α, interleukin-6, matrix metalloproteinase (MMP)-2, B-cell leukemia/lymphoma (Bcl)-2, Bcl-2-associated X (Bax), and caspase-3 protein expression levels in left ventricular (LV) tissues from each group. Results Losartan administration reduced LV hypertrophy, collagen content, and the expression of pro-inflammatory factors TNF-α and MMP-2 in LV tissue. In addition, losartan led to a decrease in the expression of the pro-apoptotic proteins Bax and caspase-3 and an increase in the expression of the anti-apoptotic protein Bcl-2. Moreover, losartan treatment induced a reduction in the apoptotic area compared to group A. Conclusion In an ADR-induced cardiomyopathy rat model, co-administration of ADR with losartan presented cardioprotective effects by attenuating LV hypertrophy, pro-inflammatory factors, and apoptosis in LV tissue.
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Affiliation(s)
- Hyeon A Kim
- Department of Thoracic and Cardiovascular Surgery, Asan Medical Center, Seoul, Korea
| | - Kwan Chang Kim
- Department of Thoracic and Cardiovascular Surgery, Ewha Womans University School of Medicine, Seoul, Korea
| | - Hyeryon Lee
- Department of Pediatrics, Ewha Womans University School of Medicine, Seoul, Korea
| | - Young Mi Hong
- Department of Pediatrics, Ewha Womans University School of Medicine, Seoul, Korea
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Yi GY, Kim YK, Kim KC, Park HS. Pulmonary Multinodular Epithelioid Hemangioendothelioma with Mixed Progression and Spontaneous Regression during a 7-Year Follow-Up: A Case Report and Review of Imaging Findings. J Korean Soc Radiol 2022; 83:958-964. [PMID: 36238925 PMCID: PMC9514574 DOI: 10.3348/jksr.2021.0135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 10/03/2021] [Accepted: 10/12/2021] [Indexed: 11/15/2022]
Abstract
Pulmonary epithelioid hemangioendothelioma (PEH) is a rare vascular tumor of borderline or low-grade malignancy, and its prognosis is unpredictable. Herein, we describe the case of a 47-year-old asymptomatic female with a diagnosis of multinodular PEH. During a 7-year follow-up, the nodules with large size and high 18F-fluorodeoxyglucose uptake in the initial study showed progression with increasing sizes; however, most small nodules (size < 1 cm) demonstrated spontaneous regression with peripheral rim or nodular calcification. The patient underwent surgical resection for an enlarged nodule. Of note, it is unusual for an individual to have mixed progression and regression concomitantly, which may be helpful in predicting the prognosis.
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Abstract
Patient: Female, 62-year-old Final Diagnosis: Pleural schwannoma Symptoms: Lt. breast mass Medication: — Clinical Procedure: — Specialty: Surgery
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Affiliation(s)
- Se Hyun Paek
- Department of General Surgery, College of Medicine, Ewha Woman's University, Seoul, South Korea
| | - Joohyun Woo
- Department of General Surgery, College of Medicine, Ewha Woman's University, Seoul, South Korea
| | - Kyong-Je Woo
- Department of Plastic Surgery, College of Medicine, Ewha Woman's University, Seoul, South Korea
| | - Kwan Chang Kim
- Department of Thoracic and Cardiovascular Surgery, College of Medicine, Ewha Woman's University, Seoul, South Korea
| | - Woosung Lim
- Department of General Surgery, College of Medicine, Ewha Woman's University, Seoul, South Korea
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Lee H, Yeom A, Kim KC, Hong YM. Effect of Ambrisentan Therapy on the Expression of Endothelin Receptor, Endothelial Nitric Oxide Synthase and NADPH Oxidase 4 in Monocrotaline-induced Pulmonary Arterial Hypertension Rat Model. Korean Circ J 2019; 49:866-876. [PMID: 31165592 PMCID: PMC6713827 DOI: 10.4070/kcj.2019.0006] [Citation(s) in RCA: 4] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2019] [Revised: 03/04/2019] [Accepted: 04/03/2019] [Indexed: 01/08/2023] Open
Abstract
Background and Objectives Elevated endothelin (ET)-1 level is strongly correlated with the pathogenesis of pulmonary arterial hypertension (PAH). Expression level of nicotinamide adenine dinucleotide phosphate oxidase (NOX) 4 is increased in the PAH patients. Ambrisentan, a selective endothelin receptor A (ERA) antagonist, is widely used in PAH therapy. The current study was undertaken to evaluate the effects of ambrisentan treatment in the monocrotaline (MCT)-induced PAH rat model. Methods Rats were categorized into control group (C), monocrotaline group (M) and ambrisentan group (Am). The M and Am were subcutaneously injected 60 mg/kg MCT at day 0, and in Am, ambrisentan was orally administered the day after MCT injection for 4 weeks. The right ventricle (RV) pressure was measured and pathological changes of the lung tissues were observed by Victoria blue staining. Protein expressions of ET-1, ERA, endothelial nitric oxide synthase (eNOS) and NOX4 were confirmed by western blot analysis. Results Ambrisentan treatment resulted in a recovery of the body weight and RV/left ventricle+septum at week 4. The RV pressure was lowered at weeks 2 and 4 after ambrisentan administration. Medial wall thickening of pulmonary arterioles and the number of intra-acinar arteries were also attenuated by ambrisentan at week 4. Protein expression levels of ET-1 and eNOS were recovered at weeks 2 and 4, and ERA levels recovered at week 4. Conclusions Ambrisentan administration resulted in the recovery of ET-1, ERA and eNOS protein expression levels in the PAH model. However, the expression level of NOX4 remained unaffected after ambrisentan treatment.
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Affiliation(s)
- Hyeryon Lee
- Department of Pediatrics, Ewha Womans University College of Medicine, Seoul, Korea
| | - Arim Yeom
- Department of Pediatrics, Ewha Womans University College of Medicine, Seoul, Korea
| | - Kwan Chang Kim
- Department of Thoracic and Cardiovascular Surgery, Ewha Womans University College of Medicine, Seoul, Korea
| | - Young Mi Hong
- Department of Pediatrics, Ewha Womans University College of Medicine, Seoul, Korea.
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Lee H, Kim KC, Hong YM. Changes of Bax, Bcl-2, CCR-2, MCP-1, and TGF-β1 genes in the left ventricle of spontaneously hypertensive rat after losartan treatment. Korean J Pediatr 2018; 62:95-101. [PMID: 30360036 PMCID: PMC6434229 DOI: 10.3345/kjp.2018.06856] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Accepted: 10/15/2018] [Indexed: 01/28/2023]
Abstract
Purpose Increased apoptosis was recently found in the hypertrophied left ventricle of spontaneously hypertensive rats (SHRs). Although the available evidence suggests that apoptosis can be induced in cardiac cells by various insults including pressure overload, cardiac apoptosis appears to result from an exaggerated local production of angiotensin in adult SHRs. Altered expressions of Bcl associated X (Bax), Bcl-2, chemokine receptor (CCR)-2, monocyte chemoattractant protein (MCP)-1, transforming growth factor (TGF)-β1, phosphorylated extracellular signal-regulated kinases (PERK), and connexin 43 proteins, and kallikrein mRNA were investigated to explore the effects of losartan on the SHR model. Methods Twelve-week-old male rats were grouped as follows: control (C), SHR (hypertension: H), and losartan (L; SHRs were treated with losartan [10 mg/kg/day] for 5 weeks). Western blot and reverse transcription polymerase chain reaction assays were performed. Results Expression of Bax, CCR-2, MCP-1, TGF-β1, PERK, and connexin 43 proteins, and kallikrein mRNA was significantly increased in the H group compared to that in the C group at weeks 3 and 5. Expression of Bax, CCR-2, MCP-1, TGF-β1, and connexin 43 proteins and kallikrein mRNA was significantly decreased after losartan treatment at week 5. PERK protein expression was significantly decreased after losartan treatment at weeks 3 and 5. Bcl-2 protein expression was significantly decreased in the H group compared to that in the C group at weeks 3 and 5. Conclusion Losartan treatment reduced expression of Bax, CCR-2, MCP-1, TGF-β1, PERK, and connexin 43 proteins, and kallikrein mRNA in SHRs, along with decreased inflammation and apoptosis.
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Affiliation(s)
- Hyeryon Lee
- Department of Pediatrics, Ewha Womans University School of College, Seoul, Korea
| | - Kwan Chang Kim
- Department of Thoracic and Cardiovascular Surgery, Ewha Womans University School of College, Seoul, Korea
| | - Young Mi Hong
- Department of Pediatrics, Ewha Womans University School of College, Seoul, Korea
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Lee H, Kim KC, Hong YM. Change of voltage-gated potassium channel 1.7 expressions in monocrotaline-induced pulmonary arterial hypertension rat model. Korean J Pediatr 2018; 61:271-278. [PMID: 30274504 PMCID: PMC6172520 DOI: 10.3345/kjp.2018.06457] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Accepted: 06/01/2018] [Indexed: 11/27/2022]
Abstract
Purpose Abnormal potassium channels expression affects vessel function, including vascular tone and proliferation rate. Diverse potassium channels, including voltage-gated potassium (Kv) channels, are involved in pathological changes of pulmonary arterial hypertension (PAH). Since the role of the Kv1.7 channel in PAH has not been previously studied, we investigated whether Kv1.7 channel expression changes in the lung tissue of a monocrotaline (MCT)-induced PAH rat model and whether this change is influenced by the endothelin (ET)-1 and reactive oxygen species (ROS) pathways. Methods Rats were separated into 2 groups: the control (C) group and the MCT (M) group (60 mg/kg MCT). A hemodynamic study was performed by catheterization into the external jugular vein to estimate the right ventricular pressure (RVP), and pathological changes in the lung tissue were investigated. Changes in protein and mRNA levels were confirmed by western blot and polymerase chain reaction analysis, respectively. Results MCT caused increased RVP, medial wall thickening of the pulmonary arterioles, and increased expression level of ET-1, ET receptor A, and NADPH oxidase (NOX) 4 proteins. Decreased Kv1.7 channel expression was detected in the lung tissue. Inward-rectifier channel 6.1 expression in the lung tissue also increased. We confirmed that ET-1 increased NOX4 level and decreased glutathione peroxidase-1 level in pulmonary artery smooth muscle cells (PASMCs). ET-1 increased ROS level in PASMCs. Conclusion Decreased Kv1.7 channel expression might be caused by the ET-1 and ROS pathways and contributes to MCT-induced PAH.
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Affiliation(s)
- Hyeryon Lee
- Department of Pediatrics, Ewha Womans University School of Medicine, Seoul, Korea
| | - Kwan Chang Kim
- Department of Thoracic and Cardiovascular Surgery, Ewha Womans University School of Medicine, Seoul, Korea
| | - Young Mi Hong
- Department of Pediatrics, Ewha Womans University School of Medicine, Seoul, Korea
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Woo JH, Kim YJ, Kim KC, Kim CH, Jun J. The effect of interscalene block on ipsilateral shoulder pain and pulmonary function in patients undergoing lung lobectomy: A randomized controlled trial. Medicine (Baltimore) 2018; 97:e11034. [PMID: 29901598 PMCID: PMC6023789 DOI: 10.1097/md.0000000000011034] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND Postoperative ipsilateral shoulder pain occurs in 37% to 68% of patients undergoing a thoracotomy. We examined whether interscalene brachial plexus block using a lower concentration of local anesthetic would reduce the incidence of post-thoracotomy ipsilateral shoulder pain with assessment of pulmonary function in patients who underwent a lung lobectomy. METHODS Forty-four patients who underwent a lung lobectomy were randomly assigned to either the control or the interscalene block group. Single-shot interscalene block on the surgical site side was performed using ropivacaine 0.25% 10 mL including dexamethasone 5 mg under ultrasound guidance in the interscalene block group. Lobectomy and continuous paravertebral block were performed under general anesthesia. The presence of ipsilateral shoulder pain and postoperative adverse events were assessed. Pulmonary function tests were performed preoperatively, the day after surgery, and the day after removing the chest tube. RESULTS The incidence of ipsilateral shoulder pain was significantly lower in the interscalene block group than in the control group (54.5% vs 14.3%, P = .006) with an overall incidence of 34.9%. Postoperative adverse events were similar between the groups, with no patients presenting symptoms of respiratory difficulty. Significant reductions in pulmonary function were observed in all patients after lobectomy; however, no significant difference in any of the pulmonary function test variables was observed postoperatively between the groups. CONCLUSIONS Interscalene block using 10 mL of 0.25% ropivacaine including dexamethasone 5 mg reduced the incidence of post-thoracotomy ipsilateral shoulder pain and did not result in additional impairment of pulmonary function.
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Affiliation(s)
- Jae Hee Woo
- Department of Anesthesiology and Pain Medicine
| | | | - Kwan Chang Kim
- Department of Thoracic and Cardiovascular Surgery, College of Medicine, Ewha Womans University, Seoul, Republic of Korea
| | - Chi Hyo Kim
- Department of Anesthesiology and Pain Medicine
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Eck TF, Holben BN, Reid JS, Xian P, Giles DM, Sinyuk A, Smirnov A, Schafer JS, Slutsker I, Kim J, Koo JH, Choi M, Kim KC, Sano I, Arola A, Sayer AM, Levy RC, Munchak LA, O'Neill NT, Lyapustin A, Hsu NC, Randles CA, Da Silva AM, Buchard V, Govindaraju RC, Hyer E, Crawford JH, Wang P, Xia X. Observations of the Interaction and Transport of Fine Mode Aerosols with Cloud and/or Fog in Northeast Asia from Aerosol Robotic Network (AERONET) and Satellite Remote Sensing. J Geophys Res Atmos 2018; 123:5560-5587. [PMID: 32661496 PMCID: PMC7356674 DOI: 10.1029/2018jd028313] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Accepted: 04/26/2018] [Indexed: 06/10/2023]
Abstract
Analysis of sun photometer measured and satellite retrieved aerosol optical depth (AOD) data has shown that major aerosol pollution events with very high fine mode AOD (>1.0 in mid-visible) in the China/Korea/Japan region are often observed to be associated with significant cloud cover. This makes remote sensing of these events difficult even for high temporal resolution sun photometer measurements. Possible physical mechanisms for these events that have high AOD include a combination of aerosol humidification, cloud processing, and meteorological co-variation with atmospheric stability and convergence. The new development of Aerosol Robotic network (AERONET) Version 3 Level 2 AOD with improved cloud screening algorithms now allow for unprecedented ability to monitor these extreme fine mode pollution events. Further, the Spectral Deconvolution Algorithm (SDA) applied to Level 1 data (L1; no cloud screening) provides an even more comprehensive assessment of fine mode AOD than L2 in current and previous data versions. Studying the 2012 winter-summer period, comparisons of AERONET L1 SDA daily average fine mode AOD data showed that Moderate Resolution Imaging Spectroradiometer (MODIS) satellite remote sensing of AOD often did not retrieve and/or identify some of the highest fine mode AOD events in this region. Also, compared to models that include data assimilation of satellite retrieved AOD, the L1 SDA fine mode AOD was significantly higher in magnitude, particularly for the highest AOD events that were often associated with significant cloudiness.
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Affiliation(s)
- T F Eck
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
- Universities Space Research Association, Columbia, MD, USA
| | - B N Holben
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - J S Reid
- Naval Research Laboratory, Monterey, CA, USA
| | - P Xian
- Naval Research Laboratory, Monterey, CA, USA
| | - D M Giles
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
- Science Systems Applications, Inc., Lanham, MD, USA
| | - A Sinyuk
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
- Science Systems Applications, Inc., Lanham, MD, USA
| | - A Smirnov
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
- Science Systems Applications, Inc., Lanham, MD, USA
| | - J S Schafer
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
- Science Systems Applications, Inc., Lanham, MD, USA
| | - I Slutsker
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
- Science Systems Applications, Inc., Lanham, MD, USA
| | - J Kim
- Yonsei University, Seoul, South Korea
| | - J-H Koo
- Yonsei University, Seoul, South Korea
| | - M Choi
- Yonsei University, Seoul, South Korea
| | - K C Kim
- Gwangju Institute of Science and Technology, Gwangju, South Korea
| | - I Sano
- Kinki University, Osaka, Japan
| | - A Arola
- Finnish Meteorological Institute, Kuopio, Finland
| | - A M Sayer
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
- Universities Space Research Association, Columbia, MD, USA
| | - R C Levy
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - L A Munchak
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | | | - A Lyapustin
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - N C Hsu
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - C A Randles
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - A M Da Silva
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - V Buchard
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
- Universities Space Research Association, Columbia, MD, USA
| | - R C Govindaraju
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
- Science Systems Applications, Inc., Lanham, MD, USA
| | - E Hyer
- Naval Research Laboratory, Monterey, CA, USA
| | | | - P Wang
- LAGEO, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
| | - X Xia
- LAGEO, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
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Hong YM, Lee H, Cho MS, Kim KC. Apoptosis and remodeling in adriamycin-induced cardiomyopathy rat model. Korean J Pediatr 2017; 60:365-372. [PMID: 29234360 PMCID: PMC5725342 DOI: 10.3345/kjp.2017.60.11.365] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Revised: 09/20/2017] [Accepted: 09/28/2017] [Indexed: 11/27/2022]
Abstract
Purpose The mechanism for the pathogenesis of adriamycin (ADR)-induced cardiomyopathy is not yet known. Different hypotheses include the production of free radicals, an interaction between ADR and nuclear components, and a disruption in cardiac-specific gene expression. Apoptosis has also been proposed as being involved in cardiac dysfunction. The purpose of this study was to determine if apoptosis might play a role in ADR-induced cardiomyopathy. Methods Male Sprague-Dawley rats were separated into 2 groups: the control group (C group) and the experimental group (ADR 5 mg/wk for 3 weeks through intraperitoneal injections; A group). Echocardiographic images were obtained at week 3. Changes in caspase-3, B-cell leukemia/lymphoma (Bcl)-2, Bcl-2-associated X (Bax), interleukin (IL)-6, tumor necrosis factor-α, brain natriuretic peptide (BNP), troponin I, collagen 1, and collagen 3 protein expression from the left ventricle tissues of C and A group rats were determined by Western blot. Results Ascites and heart failure as well as left ventricular hypertrophy were noted in the A group. Ejection fraction and shortening fraction were significantly lower in the A group by echocardiography. The expression of caspase-3, Bax, IL-6, BNP, collagen 1, and collagen 3 were significantly higher in the A group as compared with the C group. Protein expression of Bcl-2 decreased significantly in the A group compared with the C group. Conclusion ADR induced an upregulation of caspase-3, Bax, IL-6, and collagen, as well as a depression in Bcl-2. Thus, apoptosis and fibrosis may play an important role in ADR-induced cardiomyopathy.
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Affiliation(s)
- Young Mi Hong
- Department of Pediatrics, Ewha Womans University School of Medicine, Seoul, Korea
| | - Hyeryon Lee
- Department of Pediatrics, Ewha Womans University School of Medicine, Seoul, Korea
| | - Min-Sun Cho
- Department of Pathology, Ewha Womans University School of Medicine, Seoul, Korea
| | - Kwan Chang Kim
- Department of Thoracic and Cardiovascular Surgery, Ewha Womans University School of Medicine, Seoul, Korea
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Lee YP, Chun EM, Kim YK, Kim KC. Benign superior vena cava syndrome with uncontrolled pleural effusion by calcified mediastinal lymphadenopathy: surgical management. J Thorac Dis 2017; 9:E660-E663. [PMID: 28932580 DOI: 10.21037/jtd.2017.06.51] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
This report describes a rare case of benign superior vena cava syndrome (SVCS) accompanying recalcitrant pleural effusion developed secondary to extrinsic compression by anthracotic calcified mediastinal lymphadenopathy which was corrected by surgical bypass graft. An 81-year-old female presented with recalcitrant pleural effusion for several months despite of medical treatments. SVCS developed progressively without any other radiological evidence of malignancy or active infection on initial chest computed tomography (CT). A follow-up chest CT scan taken one month later revealed a poorly-defined mass-like lesion encasing the SVC. Near total collapse of the SVC due to circumferential compression by massive anthracotic calcified lymph nodes was noted in the surgical fields. A bypass graft was performed using an artificial vessel instead of endovascular treatment because of severe adhesion. The abrupt SVCS and uncontrolled pleural effusions completely disappeared after surgical correction.
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Affiliation(s)
- Yoon Pyo Lee
- Department of Internal Medicine, Division of Pulmonology and Critical Care Medicine, Ewha Womans University College of Medicine, Seoul, Korea
| | - Eun Mi Chun
- Department of Internal Medicine, Division of Pulmonology and Critical Care Medicine, Ewha Womans University College of Medicine, Seoul, Korea
| | - Yoo Kyung Kim
- Department of Radiology, Ewha Womans University College of Medicine, Seoul, Korea
| | - Kwan Chang Kim
- Department of Thoracic & Cardiovascular Surgery, Ewha Womans University College of Medicine, Seoul, Korea
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Lee H, Kim KC, Choi SJ, Hong YM. Optimal Dose and Timing of Umbilical Stem Cells Treatment in Pulmonary Arterial Hypertensive Rats. Yonsei Med J 2017; 58:570-580. [PMID: 28332363 PMCID: PMC5368143 DOI: 10.3349/ymj.2017.58.3.570] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Revised: 12/02/2016] [Accepted: 12/08/2016] [Indexed: 01/18/2023] Open
Abstract
PURPOSE Pulmonary arterial hypertension (PAH) is a fatal disease which is characterized by an increase in pulmonary arterial pressure leading to increases in right ventricular afterload. Human umbilical cord blood derived-mesenchymal stem cells (hUCB-MSCs) administered via the jugular vein have been previously shown to improve PAH by reversal treatment. However, the effect of low dosage and transfusion timing of hUCB-MSCs on PAH has not yet been clearly established. Obviously, low dosage treatment can lead to a reduction in costs. This is the first study on early transfusion effect. MATERIALS AND METHODS This study was divided into two parts. The first part is an investigation of dose-dependent effect. hUCB-MSCs were administered into 3 groups of rats (UA: 3×10⁶ cells, UB: 1.5×10⁶ cells, UC: 3×10⁵ cells) via the external jugular vein at week 1 after monocrotaline (MCT) injection. The second part is a search for optimal treatment timing in 3×10⁵ cells dose of hUCB-MSCs administered at day 1 for UD group (low dose of hUCB-MSCs at day 1), at day 1 and week 1 for the UE group (dual transfusion of low dose of hUCB-MSCs at day 1 and week 1) and at 1 week for the UF group (reversal treatment of low dose hUCB-MSC at week 1) after MCT injection. RESULTS The administration of 3×10⁵ hUCB-MSCs was as effective as the 3×10⁶ dose in decreasing mean right ventricle (RV) pressure and pulmonary pathological changes. Early treatment with hUCB-MSCs improved mean RV pressure, pulmonary pathological changes and heart collagen 3 protein expression levels in PAH. CONCLUSION Low-dose early treatment of hUCB-MSCs is as effective as a high dose treatment of hUCB-MSCs in improving PAH although dual or reversal treatment is still more effective.
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Affiliation(s)
- Hyeryon Lee
- Department of Pediatrics, Ewha Womans University School of Medicine, Seoul, Korea
| | - Kwan Chang Kim
- Department of Thoracic and Cardiovascular Surgery, Ewha Womans University School of Medicine, Seoul, Korea
| | - Soo Jin Choi
- Biomedical Research Institute, MEDIPOST, Co., Seoul, Korea
| | - Young Mi Hong
- Department of Pediatrics, Ewha Womans University School of Medicine, Seoul, Korea.
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Bae HK, Lee H, Kim KC, Hong YM. The effect of sildenafil on right ventricular remodeling in a rat model of monocrotaline-induced right ventricular failure. Korean J Pediatr 2016; 59:262-70. [PMID: 27462355 PMCID: PMC4958704 DOI: 10.3345/kjp.2016.59.6.262] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 04/25/2016] [Accepted: 05/10/2016] [Indexed: 11/29/2022]
Abstract
Purpose Pulmonary arterial hypertension (PAH) leads to right ventricular failure (RVF) as well as an increase in pulmonary vascular resistance. Our purpose was to study the effect of sildenafil on right ventricular remodeling in a rat model of monocrotaline (MCT)-induced RVF. Methods The rats were distributed randomly into 3 groups. The control (C) group, the monocrotaline (M) group (MCT 60 mg/kg) and the sildenafil (S) group (MCT 60 mg/kg+ sildenafil 30 mg/kg/day for 28 days). Masson Trichrome staining was used for heart tissues. Western blot analysis and immunohistochemical staining were performed. Results The mean right ventricular pressure (RVP) was significantly lower in the S group at weeks 1, 2, and 4. The number of intra-acinar arteries and the medial wall thickness of the pulmonary arterioles significantly lessened in the S group at week 4. The collagen content also decreased in heart tissues in the S group at week 4. Protein expression levels of B-cell lymphoma-2 (Bcl-2)-associated X, caspase-3, Bcl-2, interleukin (IL)-6, matrix metalloproteinase (MMP)-2, endothelial nitric oxide synthase (eNOS), endothelin (ET)-1 and ET receptor A (ERA) in lung tissues greatly decreased in the S group at week 4 according to immunohistochemical staining. According to Western blotting, protein expression levels of troponin I, brain natriuretic peptide, caspase-3, Bcl-2, tumor necrosis factor-α, IL-6, MMP-2, eNOS, ET-1, and ERA in heart tissues greatly diminished in the S group at week 4. Conclusion Sildenafil alleviated right ventricular hypertrophy and mean RVP. These data suggest that sildenafil improves right ventricular function.
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Affiliation(s)
- Hyun Kyung Bae
- Department of Pediatrics, Ewha Womans University School of Medicine, Seoul, Korea
| | - Hyeryon Lee
- Department of Pediatrics, Ewha Womans University School of Medicine, Seoul, Korea
| | - Kwan Chang Kim
- Department of Thoracic and Cardiovascular Surgery, Ewha Womans University School of Medicine, Seoul, Korea
| | - Young Mi Hong
- Department of Pediatrics, Ewha Womans University School of Medicine, Seoul, Korea
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Lee JH, Lee H, Lee SM, Kang PJ, Kim KC, Hong YM. Changes of blood pressure, abdominal visceral fat tissue and gene expressions in fetal programming induced rat model after amlodipine-losartan combination treatment. Clin Hypertens 2016; 22:12. [PMID: 27051525 PMCID: PMC4820991 DOI: 10.1186/s40885-016-0046-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Accepted: 01/29/2016] [Indexed: 01/05/2023] Open
Abstract
Background There are a number of complications that can occur if there is under-nutrition during pregnancy followed by a period of rapid catch-up growth, including a higher chance of adult obesity, insulin resistance and hypertriglyceridemia. The purposes of this study were to investigate the effects of fetal under-nutrition during late pregnancy and lactation on blood pressure, visceral fat tissue, gene expressions and to evaluate changes after amlodipine- losartan combination treatment. Methods The rats were divided into three groups: the control (C) group, the food restriction (FR: 50 % food restricted diet) group, and the CX group, which was treated with Cozaar XQ (amlodipine- losartan combination drug) in FR rats from postnatal 4 to 20 weeks. Masson’s trichrome staining was performed in the heart tissues. The amount of abdominal visceral fat tissues was measured. Western blot analysis such as angiotensin converting enzyme (ACE), angiotensin II receptor type IA (ATIA), troponin I (Tn I) and endothelial nitric oxide synthase (eNOS) were performed. Results Body weights were significantly higher in the FR group compared with the C group at weeks 8 and 20 and lower in the CX group at week 20. Blood pressure was significantly higher in the FR group compared with the C group at week 20 and lower in the CX group at weeks 12 and 20. The amount of abdominal visceral fat was significantly higher in the FR group compared with the C group at weeks 8, 12 and 20 and significantly lower in the CX group at weeks 16 and 20. Protein expression of ATIA and eNOS were significantly reduced in the CX group at weeks 16 and 20. ACE was significantly reduced in the CX group at week 20 and Tn I was significantly reduced in the CX group at week 16. Conclusions When there is fetal under-nutrition during pregnancy, it leads to obesity, high blood pressure, hypertriglyceridemia and several gene changes in offspring. Amlodipine-losartan combination treatment was able to lower obesity, hypertension, hypertriglyceridemia and several gene changes in rats suffering from fetal under-nutrition during pregnancy.
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Affiliation(s)
- Ji Hyen Lee
- Department of Pediatrics, Ewha Womans University, 911-1, Mokdong, YangCheon-Ku, Seoul, South Korea
| | - Hyeryon Lee
- Department of Pediatrics, Ewha Womans University, 911-1, Mokdong, YangCheon-Ku, Seoul, South Korea
| | - Sang Mi Lee
- Department of Pediatrics, Ewha Womans University, 911-1, Mokdong, YangCheon-Ku, Seoul, South Korea
| | - Pil Je Kang
- Department of Thoracic and Cardiovascular Surgery, Ewha Womans University, Seoul, South Korea
| | - Kwan Chang Kim
- Department of Thoracic and Cardiovascular Surgery, Ewha Womans University, Seoul, South Korea
| | - Young Mi Hong
- Department of Pediatrics, Ewha Womans University, 911-1, Mokdong, YangCheon-Ku, Seoul, South Korea
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Lee JC, Kim KC, Choe SY, Hong YM. Reduced immunoreactivities of B-type natriuretic peptide in pulmonary arterial hypertension rats after ranolazine treatment. Anat Cell Biol 2016; 49:7-14. [PMID: 27051563 PMCID: PMC4819080 DOI: 10.5115/acb.2016.49.1.7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Revised: 01/25/2016] [Accepted: 03/07/2016] [Indexed: 02/05/2023] Open
Abstract
Pulmonary arterial hypertension (PAH) is a severe pulmonary vascular disease characterized by sustained increase in the pulmonary arterial pressure and excessive thickening and remodeling of the distal small pulmonary arteries. During disease progression, structural remodeling of the right ventricular (RV) impairs pump function, creates pro-arrhythmic substrates and triggers for arrhythmias. Notably, RV failure and lethal arrhythmias are major contributors to cardiac death in PAH that are not directly addressed by currently available therapies. Ranolazine (RAN) is an anti-anginal, anti-ischemic drug that has cardioprotective effects of heart dysfunction. RAN also has anti-arrhythmic effects due to inhibition of the late sodium current in cardiomyocytes. Therefore, we hypothesized that RAN could reduce the mal-adaptive structural remodeling of the RV, and prevent triggered ventricular arrhythmias in the monocrotaline-induced rat model of PAH. RAN reduced ventricular hypertrophy, reduced levels of B-type natriuretic peptide, and decreased the expression of fibrosis. In addition, RAN prevented cardiovascular death in rat model of PAH. These results support the notion that RAN can improve the functional properties of the RV, highlighting its potential benefits in the setting of heart impairment.
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Affiliation(s)
- Jae Chul Lee
- Department of Biology, School of Life Sciences, Chungbuk National University, Cheongju, Korea.; Department of Surgery, Brain Korea 21 PLUS Project for Medical Sciences and HBP Surgery and Liver Transplantation, Korea University College of Medicine, Seoul, Korea.; Department of Anatomy, Seoul National University College of Medicine, Seoul, Korea.; Department of Pediatrics, Ewha Womans University School of Medicine, Seoul, Korea
| | - Kwan Chang Kim
- Department of Thoracic and Cardiovascular Surgery, Ewha Womans University School of Medicine, Seoul, Korea
| | - Soo Young Choe
- Department of Biology, School of Life Sciences, Chungbuk National University, Cheongju, Korea
| | - Young Mi Hong
- Department of Pediatrics, Ewha Womans University School of Medicine, Seoul, Korea
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Kim KC, Lee JC, Lee H, Cho MS, Choi SJ, Hong YM. Changes in Caspase-3, B Cell Leukemia/Lymphoma-2, Interleukin-6, Tumor Necrosis Factor-α and Vascular Endothelial Growth Factor Gene Expression after Human Umbilical Cord Blood Derived Mesenchymal Stem Cells Transfusion in Pulmonary Hypertension Rat Models. Korean Circ J 2016; 46:79-92. [PMID: 26798389 PMCID: PMC4720853 DOI: 10.4070/kcj.2016.46.1.79] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Revised: 07/14/2015] [Accepted: 09/15/2015] [Indexed: 11/15/2022] Open
Abstract
Background and Objectives Failure of vascular smooth muscle apoptosis and inflammatory response in pulmonary arterial hypertension (PAH) is a current research focus. The goals of this study were to determine changes in select gene expressions in monocrotaline (MCT)-induced PAH rat models after human umbilical cord blood derived mesenchymal stem cells (hUCB-MSCs) transfusion. Materials and Methods The rats were separated into 3 groups i.e., control group (C group), M group (MCT 60 mg/kg), and U group (hUCB-MSCs transfusion) a week after MCT injection. Results TUNEL assay showed that the U group had significantly lowered positive apoptotic cells in the lung tissues, as compared with the M group. mRNA of caspase-3, B cell leukemia/lymphoma (Bcl)-2, interleukin (IL)-6, tumor necrosis factor (TNF)-α and vascular endothelial growth factor (VEGF) in the lung tissues were greatly reduced at week 4 in the U group. Immunohistochemical staining of the lung tissues also demonstrated a similar pattern, with the exception of IL-6. The protein expression of caspase-3, Bcl-2 VEGF, IL-6, TNF-α and brain natriuretic peptide in the heart tissues were significantly lower in the U group, as compared with the M group at week 2. Furthermore, the protein expression of VEGF, IL-6 and BNP in the heart tissues were significantly lower in the U group at week 4. Collagen content in the heart tissues was significantly lower in the U group, as compared with M group at weeks 2 and 4, respectively. Conclusion hUCB-MSCs could prevent inflammation, apoptosis and remodeling in MCT-induced PAH rat models.
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Affiliation(s)
- Kwan Chang Kim
- Department of Thoracic and Cardiovascular Surgery, Ewha Womans University School of Medicine, Seoul, Korea
| | - Jae Chul Lee
- Department of Pediatrics, Ewha Womans University School of Medicine, Seoul, Korea
| | - Hyeryon Lee
- Department of Pediatrics, Ewha Womans University School of Medicine, Seoul, Korea
| | - Min-Sun Cho
- Department of Pathology, Ewha Womans University School of Medicine, Seoul, Korea
| | - Soo Jin Choi
- Biomedical Research Institute, MEDIPOST, Co., Seoul, Korea
| | - Young Mi Hong
- Department of Pediatrics, Ewha Womans University School of Medicine, Seoul, Korea
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Lee H, Lee JC, Kwon JH, Kim KC, Cho MS, Yang YS, Oh W, Choi SJ, Seo ES, Lee SJ, Wang TJ, Hong YM. The Effect of Umbilical Cord Blood Derived Mesenchymal Stem Cells in Monocrotaline-induced Pulmonary Artery Hypertension Rats. J Korean Med Sci 2015; 30:576-85. [PMID: 25931788 PMCID: PMC4414641 DOI: 10.3346/jkms.2015.30.5.576] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Accepted: 01/16/2015] [Indexed: 12/19/2022] Open
Abstract
Pulmonary arterial hypertension (PAH) causes right ventricular failure due to a gradual increase in pulmonary vascular resistance. The purposes of this study were to confirm the engraftment of human umbilical cord blood-mesenchymal stem cells (hUCB-MSCs) placed in the correct place in the lung and research on changes of hemodynamics, pulmonary pathology, immunomodulation and several gene expressions in monocrotaline (MCT)-induced PAH rat models after hUCB-MSCs transfusion. The rats were grouped as follows: the control (C) group; the M group (MCT 60 mg/kg); the U group (hUCB-MSCs transfusion). They received transfusions via the external jugular vein a week after MCT injection. The mean right ventricular pressure (RVP) was significantly reduced in the U group after the 2 week. The indicators of RV hypertrophy were significantly reduced in the U group at week 4. Reduced medial wall thickness in the pulmonary arteriole was noted in the U group at week 4. Reduced number of intra-acinar muscular pulmonary arteries was observed in the U group after 2 week. Protein expressions such as endothelin (ET)-1, endothelin receptor A (ERA), endothelial nitric oxide synthase (eNOS) and matrix metalloproteinase (MMP)-2 significantly decreased at week 4. The decreased levels of ERA, eNOS and MMP-2 immunoreactivity were noted by immnohistochemical staining. After hUCB-MSCs were administered, there were the improvement of RVH and mean RVP. Reductions in several protein expressions and immunomodulation were also detected. It is suggested that hUCB-MSCs may be a promising therapeutic option for PAH.
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Affiliation(s)
- Hyeryon Lee
- Department of Pediatrics, Ewha Womans University School of Medicine, Seoul, Korea
| | - Jae Chul Lee
- Department of Pediatrics, Ewha Womans University School of Medicine, Seoul, Korea
| | - Jung Hyun Kwon
- Department of Pediatrics, Ewha Womans University School of Medicine, Seoul, Korea
| | - Kwan Chang Kim
- Department of Thoracic and Cardiovascular Surgery, Ewha Womans University School of Medicine, Seoul, Korea
| | - Min-Sun Cho
- Department of Pathology, Ewha Womans University School of Medicine, Seoul, Korea
| | - Yoon Sun Yang
- Biomedical Research Institute, MEDIPOST, Co., Seoul, Korea
| | - Wonil Oh
- Biomedical Research Institute, MEDIPOST, Co., Seoul, Korea
| | - Soo Jin Choi
- Biomedical Research Institute, MEDIPOST, Co., Seoul, Korea
| | - Eun-Seok Seo
- Division of Integrative Bioscience and Bioengineering, Pohang University of Science and Technology, Pohang, Korea
| | - Sang-Joon Lee
- Division of Integrative Bioscience and Bioengineering, Pohang University of Science and Technology, Pohang, Korea
| | - Tae Jun Wang
- Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, Pohang, Korea
| | - Young Mi Hong
- Department of Pediatrics, Ewha Womans University School of Medicine, Seoul, Korea
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Cha SM, Shin HD, Kim KC, Park IY. Extensive curettage using a high-speed burr versus dehydrated alcohol instillation for the treatment of enchondroma of the hand. J Hand Surg Eur Vol 2015; 40:384-91. [PMID: 24369364 DOI: 10.1177/1753193413517204] [Citation(s) in RCA: 7] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2013] [Accepted: 11/22/2013] [Indexed: 02/03/2023]
Abstract
The purpose of this retrospective study was to compare the clinical and radiological outcomes of patients treated with different adjuvant methods after curettage for enchondromas of the hand. Sixty-two patients with enchondroma were treated with high-speed burring (29 patients) or alcohol instillation (33 patients) after curettage. The mean follow-up was 40.8 months. No significant differences in the visual analogue scale, Disabilities of the Arm, Shoulder, and Hand scores, total range of active motion, grip strength, and complete healing time were observed between the groups. The distribution of the results of the formula by Wilhelm and Feldmeier were not significantly different between the groups. No surgery-related complications, postoperative pathological fractures, or recurrence was found in either group. For the treatment of enchondroma in the metacarpal and proximal phalanx, alcohol instillation immediately after curettage was as effective as extensive curettage using a high-speed burr.
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Affiliation(s)
- S M Cha
- Department of Orthopaedic Surgery, Regional Rheumatoid and Degenerative Arthritis Center, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, Korea
| | - H D Shin
- Department of Orthopaedic Surgery, Regional Rheumatoid and Degenerative Arthritis Center, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, Korea
| | - K C Kim
- Department of Orthopaedic Surgery, Regional Rheumatoid and Degenerative Arthritis Center, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, Korea
| | - I Y Park
- Department of Orthopaedic Surgery, Regional Rheumatoid and Degenerative Arthritis Center, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, Korea
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Choi S, Kim JA, Kim KC, Suh SH. Isolation and in vitro culture of vascular endothelial cells from mice. Korean J Physiol Pharmacol 2014; 19:35-42. [PMID: 25605995 PMCID: PMC4297760 DOI: 10.4196/kjpp.2015.19.1.35] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Revised: 10/29/2014] [Accepted: 10/29/2014] [Indexed: 11/15/2022]
Abstract
In cardiovascular disorders, understanding of endothelial cell (EC) function is essential to elucidate the disease mechanism. Although the mouse model has many advantages for in vivo and in vitro research, efficient procedures for the isolation and propagation of primary mouse EC have been problematic. We describe a high yield process for isolation and in vitro culture of primary EC from mouse arteries (aorta, braches of superior mesenteric artery, and cerebral arteries from the circle of Willis). Mouse arteries were carefully dissected without damage under a light microscope, and small pieces of the vessels were transferred on/in a Matrigel matrix enriched with endothelial growth supplement. Primary cells that proliferated in Matrigel were propagated in advanced DMEM with fetal calf serum or platelet-derived serum, EC growth supplement, and heparin. To improve the purity of the cell culture, we applied shearing stress and anti-fibroblast antibody. EC were characterized by a monolayer cobble stone appearance, positive staining with acetylated low density lipoprotein labeled with 1,1'-dioctadecyl-3,3,3',3'-tetramethyl-indocarbocyanine perchlorate, RT-PCR using primers for von-Willebrand factor, and determination of the protein level endothelial nitric oxide synthase. Our simple, efficient method would facilitate in vitro functional investigations of EC from mouse vessels.
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Affiliation(s)
- Shinkyu Choi
- Department of Physiology, School of Medicine, Ewha Womans University, Seoul 157-710, Korea
| | - Ji Aee Kim
- Department of Physiology, School of Medicine, Ewha Womans University, Seoul 157-710, Korea
| | - Kwan Chang Kim
- Department of Thoracic & Cardiovascular Surgery and Ewha Womans University Global Top 5 Research Program, School of Medicine, Ewha Womans University, Seoul 157-710, Korea
| | - Suk Hyo Suh
- Department of Physiology, School of Medicine, Ewha Womans University, Seoul 157-710, Korea
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Lee JC, Kim KC, Yang YS, Oh W, Choi SJ, Choe SY, Hong YM. Microarray analysis after umbilical cord blood derived mesenchymal stem cells injection in monocrotaline-induced pulmonary artery hypertension rats. Anat Cell Biol 2014; 47:217-26. [PMID: 25548719 PMCID: PMC4276895 DOI: 10.5115/acb.2014.47.4.217] [Citation(s) in RCA: 8] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Revised: 11/27/2014] [Accepted: 12/01/2014] [Indexed: 02/08/2023] Open
Abstract
Pulmonary arterial hypertension (PAH) is associated with structural alterations of lung vasculature. PAH is still a devastating disease needing an aggressive therapeutic approach. Despite the therapeutic potential of human umbilical cord mesenchymal stem cells (MSCs), the molecular parameters to define the stemness remain largely unknown. Using high-density oligonucleotide microarrays, the differential gene expression profiles between a fraction of mononuclear cells of human umbilical cord blood (UCB) and its MSC subpopulation were obtained. Of particular interest was a subset of 46 genes preferentially expressed at 7-fold or higher in the group treated with human UCB-MSCs. This subset contained numerous genes involved in the inflammatory response, immune response, lipid metabolism, cell adhesion, cell migration, cell differentiation, apoptosis, cell growth, transport, cell proliferation, transcription, and signal transduction. Our results provide a foundation for a more reproducible and reliable quality control using genotypic analysis for the definition of human UCB-MSCs. Therefore, our results will provide a basis for studies on molecular mechanisms controlling the core properties of human MSCs.
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Affiliation(s)
- Jae Chul Lee
- Department of Pediatrics, Ewha Womans University School of Medicine, Seoul, Korea. ; Department of Biology, School of Life Sciences, Chungbuk National University, Cheongju, Korea
| | - Kwan Chang Kim
- Department of Thoracic and Cardiovascular Surgery, Ewha Womans University School of Medicine, Seoul, Korea
| | - Yoon Sun Yang
- Biomedical Research Institute, MEDIPOST, Co., Seoul, Korea
| | - Wonil Oh
- Biomedical Research Institute, MEDIPOST, Co., Seoul, Korea
| | - Soo Jin Choi
- Biomedical Research Institute, MEDIPOST, Co., Seoul, Korea
| | - Soo Young Choe
- Department of Biology, School of Life Sciences, Chungbuk National University, Cheongju, Korea
| | - Young Mi Hong
- Department of Pediatrics, Ewha Womans University School of Medicine, Seoul, Korea
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21
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Hyun YJ, Piao MJ, Kim KC, Zheng J, Yao CW, Cha JW, Kang HK, Yoo ES, Koh YS, Lee NH, Ko MH, Hyun JW. Photoprotective Effect of a <i>Polyopes affinis</i> (Harvey) Kawaguchi and Wang (<i>Halymeniaceae</i>)-Derived Ethanol Extract on Human Keratinocytes. TROP J PHARM RES 2014. [DOI: 10.4314/tjpr.v13i6.6] [Citation(s) in RCA: 5] [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] [Indexed: 11/17/2022] Open
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22
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Hong YM, Kwon JH, Choi S, Kim KC. Apoptosis and inflammation associated gene expressions in monocrotaline-induced pulmonary hypertensive rats after bosentan treatment. Korean Circ J 2014; 44:97-104. [PMID: 24653739 PMCID: PMC3958615 DOI: 10.4070/kcj.2014.44.2.97] [Citation(s) in RCA: 8] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Revised: 11/13/2013] [Accepted: 01/16/2014] [Indexed: 11/22/2022] Open
Abstract
Background and Objectives Vascular wall remodeling in pulmonary hypertension can be caused by an aberration in the normal balance between proliferation and apoptosis of endothelial cell in the pulmonary artery. The objective of this study was to evaluate the effect of bosentan on apoptosis in monocrotaline (MCT)-induced pulmonary hypertension. Materials and Methods Sprague-Dawley rats were divided into three groups: control (C) group, M group (MCT 60 mg/kg) and B group (MCT 60 mg/kg plus bosentan 20 mg/day orally). Gene expressions of Bcl (B cell leukemia/lymphoma)-2, caspase-3, complement component (C)-6, vascular endothelial growth factor (VEGF), interleukin (IL)-6 and tumor necrosis factor-alpha (TNF-α) were analyzed by real time polymerase chain reaction and western blot analysis. Results The messenger ribonucleic acid (mRNA) expressions of caspase-3 and VEGF were significantly increased in the M group compared with the C group, and significantly decreased in the B group compared with the M group in week 4. mRNA expression of IL-6 was significantly decreased in weeks 1, 2, and 4 in the B group compared with the M group. mRNA expression of TNF-α was significantly decreased on day 5 and in weeks 1 and 2 in the B group compared with the M group. Conclusion Bosentan may have potential for preventing apoptosis and inflammation.
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Affiliation(s)
- Young Mi Hong
- Department of Pediatrics, Ewha Womans University School of Medicine, Seoul, Korea. ; Ewha Womans University Global Top 5 Research Program, Ewha Womans University School of Medicine, Seoul, Korea
| | - Jung Hyun Kwon
- Department of Pediatrics, Ewha Womans University School of Medicine, Seoul, Korea
| | - Shinkyu Choi
- Department of Physiology, Ewha Womans University School of Medicine, Seoul, Korea
| | - Kwan Chang Kim
- Department of Thoracic & Cardiovascular Surgery, Ewha Womans University School of Medicine, Seoul, Korea. ; Ewha Womans University Global Top 5 Research Program, Ewha Womans University School of Medicine, Seoul, Korea
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Chung DY, Kim KC. Association between shortened cervical length at 34-36 weeks' gestation and term labour in Asian women. J OBSTET GYNAECOL 2014; 34:153-5. [PMID: 24456436 DOI: 10.3109/01443615.2013.834303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Cervical length was measured at 34-36 weeks' gestation by transvaginal ultrasound. The purpose of measurement of cervical length before term was to reveal the association with the onset of term labour. This was a retrospective study of 362 women who were delivered at term at Mizmedi hospital, between August 2006 and November 2011. There was significant linear correlation between cervical length and the scan-to-labour interval in women with labour before 41 weeks. The measurement of cervical length at 34-36 weeks' gestation might be helpful in predicting the onset of term labour before 41 weeks.
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Affiliation(s)
- D Y Chung
- Department of Obstetrics and Gynecology
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Kwon JH, Kim KC, Cho MS, Kim HS, Sohn S, Hong YM. An inhibitory effect of tumor necrosis factor-alpha antagonist to gene expression in monocrotaline-induced pulmonary hypertensive rats model. Korean J Pediatr 2013; 56:116-24. [PMID: 23559973 PMCID: PMC3611045 DOI: 10.3345/kjp.2013.56.3.116] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2012] [Revised: 10/18/2012] [Accepted: 01/25/2013] [Indexed: 12/24/2022]
Abstract
Purpose Tumor necrosis factor (TNF)-α is thought to contribute to pulmonary hypertension. We aimed to investigate the effect of infliximab (TNF-α antagonist) treatment on pathologic findings and gene expression in a monocrotaline-induced pulmonary hypertension rat model. Methods Six-week-old male Sprague-Dawley rats were allocated to 3 groups: control (C), single subcutaneous injection of normal saline (0.1 mL/kg); monocrotaline (M), single subcutaneous injection of monocrotaline (60 mg/kg); and monocrotaline + infliximab (M+I), single subcutaneous injection of monocrotaline plus single subcutaneous injection of infliximab (5 mg/kg). The rats were sacrificed after 1, 5, 7, 14, or 28 days. We examined changes in pathology and gene expression levels of TNF-α, endothelin-1 (ET-1), endothelin receptor A (ERA), endothelial nitric oxide synthase (eNOS), matrix metalloproteinase (MMP)2, and tissue inhibitor of matrix metalloproteinase (TIMP). Results The increase in medial wall thickness of the pulmonary arteriole in the M+I group was significantly lower than that in the M group on day 7 after infliximab treatment (P<0.05). The number of intra-acinar muscular arteries in the M+I group was lower than that in the M group on days 14 and 28 (P<0.05). Expression levels of TNF-α, ET-1, ERA, and MMP2 were significantly lower in the M+I group than in the M group on day 5, whereas eNOS and TIMP expressions were late in the M group (day 28). Conclusion Infliximab administration induced early changes in pathological findings and expression levels of TNF-α, and MMP2 in a monocrotaline-induced pulmonary hypertension rat model.
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Affiliation(s)
- Jung Hyun Kwon
- Department of Pediatrics, Ewha Womans University School of Medicine, Seoul, Korea
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Kwag E, Shim SS, Kim Y, Chang JH, Kim KC. CT features of generalized lymphangiomatosis in adult patients. Clin Imaging 2013; 37:723-7. [PMID: 23391872 DOI: 10.1016/j.clinimag.2012.12.003] [Citation(s) in RCA: 12] [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] [Received: 06/18/2012] [Revised: 09/05/2012] [Accepted: 12/17/2012] [Indexed: 12/28/2022]
Abstract
OBJECTIVE The objective was to present computed tomographic (CT) findings of generalized lymphangiomatosis in young adults that was at first misdiagnosed with malignancy. MATERIALS AND METHODS We reviewed the clinical and radiological findings of three young adults who had histologically confirmed generalized lymphangiomatosis. RESULTS Bony lesions were cystic forms and appeared as variably sized, well-circumscribed, irregular, microlobulated-contour, multiseptated masses. Lymphangiomas involving soft tissue were similar to bony lesions on CT. CONCLUSION CT features of generalized lymphangiomatosis may be useful to prevent invasive procedures in young subjects. Generalized lymphangiomatosis involving bones in young adults shows less extensive and aggressive osteolytic pattern than known features in child.
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Affiliation(s)
- Eujean Kwag
- Department of Radiology, Mokdong Hospital, Ewha Womans University School of Medicine, Seoul 158-710, Korea
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Lee IS, Yook JH, Park YS, Kim KC, Oh ST, Kim BS. Suitability of endoscopic submucosal dissection for treatment of submucosal gastric cancers. Br J Surg 2013; 100:668-73. [PMID: 23334982 DOI: 10.1002/bjs.9051] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/19/2012] [Indexed: 12/20/2022]
Abstract
BACKGROUND Endoscopic submucosal dissection (ESD) is not considered appropriate for all submucosal cancers owing to the risk of lymph node metastasis and difficulty estimating the deep margin status. This study aimed to determine predictive factors for lymph node metastases in submucosal cancer and to explore in which patients ESD might be feasible. METHODS Details of patients who had curative gastrectomy for submucosal gastric cancer at Asan Medical Centre from 2007 to 2011 were reviewed retrospectively to determine the relationship between lymph node metastasis and clinicopathological characteristics, including age, sex, tumour location, size, gross appearance, depth of invasion, histological type/differentiation, presence of lymphovascular/perineural invasion, and immunohistochemical staining results for p53, human epidermal growth factor receptor (HER) 1 and HER2. RESULTS A total of 1773 patients were analysed. The presence of lymphovascular invasion was related most strongly to lymph node metastasis. Multivariable analysis revealed that depth of invasion, tumour size, differentiation, gross appearance and perineural invasion were also related. Metastatic lymph nodes were found in four of 105 patients who met the classical criteria for ESD; all showed a moderately differentiated histological appearance. No lymph node metastases were observed in well differentiated SM1 tumours of any size (infiltration into upper third of submucosa), or in well differentiated SM2 (infiltration into middle third of submucosa) tumours of 2 cm or less without lymphovascular invasion. CONCLUSION Patients with well differentiated SM1 cancer of any size and those with well differentiated SM2 cancer of 2 cm or less without lymphovascular invasion may be suitable candidates for ESD.
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Affiliation(s)
- I S Lee
- Department of Surgery, Ulsan University College of Medicine and Asan Medical Centre, Seoul, Korea
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Cha JH, Lee HR, Kim KC, Cho MS, Hong YM. Changes of gene expressions in spontaneously hypertensive rat model after losartan treatment. Korean Circ J 2012; 42:761-8. [PMID: 23236328 PMCID: PMC3518710 DOI: 10.4070/kcj.2012.42.11.761] [Citation(s) in RCA: 6] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2012] [Revised: 03/31/2012] [Accepted: 06/04/2012] [Indexed: 11/12/2022] Open
Abstract
Background and Objectives The renin angiotensin system seems to play an important role in the development of cardiac and vascular hypertrophy in hypertension. The changes in pathology, and gene expressions of the angiotensin II receptor type 1A (ATIA) and angiotensin converting enzyme (ACE) were investigated in order to explore the effects of losartan in spontaneously hypertensive rat (SHR) models. Materials and Methods Twelve week-old male Wistar rats were grouped as follows: control (C) group, hypertension (H) group, and losartan (L) group in which SHR was treated with losartan (10 mg/kg/day). Western blot and reverse transcription-polymerase chain reaction analysis regarding seven genes such as endothelin-1, ACE, ATIA, neutrophil cytosolic factor, brain natriuretic peptide, troponin I, endothelial nitric oxide synthase were performed. Results Systolic blood pressure was significantly decreased in the L group compared with the H group in weeks 3 and 5. ACE and ATIA proteins in the L group were lower than H group in week 5. Conclusion Losartan reduced blood pressure, cardiac hypertrophy and protein expressions of ACE and ATIA. Changes of protein expressions were more sensitive than changes in pathology. Further study is needed for the differing doses of losartan in SHR models.
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Affiliation(s)
- Ji Hei Cha
- Department of Pediatrics, Ewha Womans University School of Medicine, Seoul, Korea
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Son JS, Kim KC, Kim BK, Cho MS, Hong YM. Effect of small hairpin RNA targeting endothelin-converting enzyme-1 in monocrotaline-induced pulmonary hypertensive rats. J Korean Med Sci 2012; 27:1507-16. [PMID: 23255850 PMCID: PMC3524430 DOI: 10.3346/jkms.2012.27.12.1507] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2012] [Accepted: 10/31/2012] [Indexed: 02/03/2023] Open
Abstract
The purpose of this study was to investigate the therapeutic effects of small hairpin RNA (shRNA) targeting endothelin-converting enzyme (ECE)-1 in monocrotaline (MCT)-induced pulmonary hypertensive rats. Ninty-four Sprague-Dawley rats were divided into three groups: control (n = 24), MCT (n = 35) and shRNA (n = 35). Four-week survival rate in the shRNA group was significantly increased compared to that in the MCT group. The shRNA group showed a significant improvement of right ventricular (RV) pressure compared with the MCT group. The MCT and shRNA groups also showed an increase in RV/(left ventricle + septum) ratio and lung/body weight. Plasma endothelin (ET)-1 concentrations in the shRNA group were lower than those in the MCT group. Medial wall thickness of pulmonary arterioles were increased after MCT injection and was significantly decreased in the shRNA group. The number of intra-acinar muscular pulmonary arteries was decreased in the shRNA group. The mRNA expressions of ET-1 and ET receptor A (ET(A)) were significantly decreased in the shRNA group in week 4. The protein levels of ET(A) were decreased in the shRNA group in week 2. The protein levels of tumor necrosis factor-α and vascular endothelial growth factor were decreased in the shRNA group in week 4. In conclusion, the gene silencing with lentiviral vector targeting ECE-1 could be effective against hemodynamic, histopathological and gene expression changes in pulmonary hypertension.
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Affiliation(s)
- Jae Sung Son
- Department of Pediatrics, Konkuk University School of Medicine, Seoul, Korea
| | - Kwan Chang Kim
- Department of Thoracic and Cardiovascular Surgery, Ewha Womans University School of Medicine, Seoul, Korea
| | - Bo Kyung Kim
- Department of Physiology, Konkuk University School of Medicine, Chungju, Korea
| | - Min-Sun Cho
- Department of Pathology, Ewha Womans University School of Medicine, Seoul, Korea
| | - Young Mi Hong
- Department of Pediatrics, Ewha Womans University School of Medicine, Seoul, Korea
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Choi YK, Ahn JH, Kim KC, Won TH. Treatment of complete persistent sciatic artery with distal thromboembolism by thromboembolectomy only. Korean J Thorac Cardiovasc Surg 2012; 45:342-4. [PMID: 23130312 PMCID: PMC3487022 DOI: 10.5090/kjtcs.2012.45.5.342] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2012] [Revised: 06/11/2012] [Accepted: 06/13/2012] [Indexed: 11/26/2022]
Abstract
A persistent sciatic artery (PSA) is very rare congenital vascular anomaly which is present in 0.025% to 0.04% of the population by an angiographic study. A PSA is usually combined with aneurismal disease or thromboembolic events because of its arteriosclerosis and vessel wall degeneration. The treatments of symptomatic PSA are comprised of exclusion of PSA from circulation and bypass surgery for the lower limb. However, surgical treatment should be tailored to its anatomy and presentation. We report a successful treatment of PSA with distal thromboembolism by thromboembolectomy without bypass surgery.
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Affiliation(s)
- Yun Kyung Choi
- Department of Thoracic and Cardiovascular Surgery, Ewha Womans University School of Medicine, Korea
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Choi YK, Ahn JH, Kim KC, Won TH. An Adult Right-sided Bochdalek Hernia Accompanied with Hepatic Hypoplasia and Inguinal Hernia. Korean J Thorac Cardiovasc Surg 2012; 45:348-50. [PMID: 23130314 PMCID: PMC3487024 DOI: 10.5090/kjtcs.2012.45.5.348] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/09/2012] [Revised: 05/21/2012] [Accepted: 06/04/2012] [Indexed: 11/16/2022]
Abstract
We herein report a very rare case of adult right-sided Bochdalek hernia accompanied with hepatic hypoplasia and inguinal hernia. A 29-year-old man was admitted with right-sided pneumothorax. A computed tomography was performed and revealed large right sided Bochdalek hernia with hepatic hypoplasia. Under thoracolaparotomy, the defect was closed with Gore-Tex soft tissue patch. After the operation, left-sided inguinal hernia was found. However, it turned out that it had been present during infancy and spontaneously resolved during adolescence. This is the first report of right-sided Bochdalek hernia with hepatic hypoplasia and inguinal hernia in an adult.
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Affiliation(s)
- Yun Kyung Choi
- Department of Thoracic and Cardiovascular Surgery, Ewha Womans University School of Medicine, Korea
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Kim KC, Lee HR, Kim SJ, Cho MS, Hong YM. Changes of gene expression after bone marrow cell transfusion in rats with monocrotaline-induced pulmonary hypertension. J Korean Med Sci 2012; 27:605-13. [PMID: 22690090 PMCID: PMC3369445 DOI: 10.3346/jkms.2012.27.6.605] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2011] [Accepted: 03/28/2012] [Indexed: 12/23/2022] Open
Abstract
Pulmonary artery hypertension (PAH) causes right ventricular failure and possibly even death by a progressive increase in pulmonary vascular resistance. Bone marrow-derived mesenchymal stem cell therapy has provided an alternative treatment for ailments of various organs by promoting cell regeneration at the site of pathology. The purpose of this study was to investigate changes of pulmonary haemodynamics, pathology and expressions of various genes, including ET (endothelin)-1, ET receptor A (ERA), endothelial nitric oxide synthase (NOS) 3, matrix metalloproteinase (MMP) 2, tissue inhibitor of matrix metalloproteinase (TIMP), interleukin (IL)-6 and tumor necrosis factor (TNF)-α in monocrotaline (MCT)-induced PAH rat models after bone marrow cell (BMC) transfusion. The rats were grouped as the control (C) group, monocrotaline (M) group, and BMC transfusion (B) group. M and B groups received subcutaneous (sc) injection of MCT (60 mg/kg). BMCs were transfused by intravenous injection at the tail 1 week after MCT injection in B group. Results showed that the average RV pressure significantly decreased in the B group compared with the M group. RV weight and the ratio of RH/LH+septum significantly decreased in the B group compared to the M group. Gene expressions of ET-1, ERA, NOS 3, MMP 2, TIMP, IL-6, and TNF-α significantly decreased in week 4 in the B group compared with the M group. In conclusion, BMC transfusion appears to improve survival rate, RVH, and mean RV pressure, and decreases gene expressions of ET-1, ERA, NOS 3, MMP 2, TIMP, IL-6, and TNF-α.
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Affiliation(s)
- Kwan Chang Kim
- Department of Thoracic and Cardiovascular Surgery, Ewha Womans University, Seoul, Korea
| | - Hae Ryun Lee
- Department of Pediatrics, Ewha Womans University, Seoul, Korea
| | - Sung Jin Kim
- Department of Pediatrics, Ewha Womans University, Seoul, Korea
| | - Min-Sun Cho
- Department of Pathology, Ewha Womans University, Seoul, Korea
| | - Young Mi Hong
- Department of Pediatrics, Ewha Womans University, Seoul, Korea
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Abe K, Fuke H, Haino S, Hams T, Hasegawa M, Horikoshi A, Itazaki A, Kim KC, Kumazawa T, Kusumoto A, Lee MH, Makida Y, Matsuda S, Matsukawa Y, Matsumoto K, Mitchell JW, Myers Z, Nishimura J, Nozaki M, Orito R, Ormes JF, Sakai K, Sasaki M, Seo ES, Shikaze Y, Shinoda R, Streitmatter RE, Suzuki J, Takasugi Y, Takeuchi K, Tanaka K, Thakur N, Yamagami T, Yamamoto A, Yoshida T, Yoshimura K. Search for antihelium with the BESS-Polar spectrometer. Phys Rev Lett 2012; 108:131301. [PMID: 22540691 DOI: 10.1103/physrevlett.108.131301] [Citation(s) in RCA: 7] [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: 01/13/2012] [Indexed: 05/31/2023]
Abstract
In two long-duration balloon flights over Antarctica, the Balloon-borne Experiment with a Superconducting Spectrometer (BESS) collaboration has searched for antihelium in the cosmic radiation with the highest sensitivity reported. BESS-Polar I flew in 2004, observing for 8.5 days. BESS-Polar II flew in 2007-2008, observing for 24.5 days. No antihelium candidate was found in BESS-Polar I data among 8.4×10(6) |Z|=2 nuclei from 1.0 to 20 GV or in BESS-Polar II data among 4.0×10(7) |Z|=2 nuclei from 1.0 to 14 GV. Assuming antihelium to have the same spectral shape as helium, a 95% confidence upper limit to the possible abundance of antihelium relative to helium of 6.9×10(-8)} was determined combining all BESS data, including the two BESS-Polar flights. With no assumed antihelium spectrum and a weighted average of the lowest antihelium efficiencies for each flight, an upper limit of 1.0×10(-7) from 1.6 to 14 GV was determined for the combined BESS-Polar data. Under both antihelium spectral assumptions, these are the lowest limits obtained to date.
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Affiliation(s)
- K Abe
- Kobe University, Kobe, Hyogo 657-8501, Japan
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Abe K, Fuke H, Haino S, Hams T, Hasegawa M, Horikoshi A, Kim KC, Kusumoto A, Lee MH, Makida Y, Matsuda S, Matsukawa Y, Mitchell JW, Nishimura J, Nozaki M, Orito R, Ormes JF, Sakai K, Sasaki M, Seo ES, Shinoda R, Streitmatter RE, Suzuki J, Tanaka K, Thakur N, Yamagami T, Yamamoto A, Yoshida T, Yoshimura K. Measurement of the cosmic-ray antiproton spectrum at solar minimum with a long-duration balloon flight over antarctica. Phys Rev Lett 2012; 108:051102. [PMID: 22400920 DOI: 10.1103/physrevlett.108.051102] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2011] [Revised: 10/21/2011] [Indexed: 05/31/2023]
Abstract
The energy spectrum of cosmic-ray antiprotons (p's) from 0.17 to 3.5 GeV has been measured using 7886 p's detected by BESS-Polar II during a long-duration flight over Antarctica near solar minimum in December 2007 and January 2008. This shows good consistency with secondary p calculations. Cosmologically primary p's have been investigated by comparing measured and calculated p spectra. BESS-Polar II data show no evidence of primary p's from the evaporation of primordial black holes.
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Affiliation(s)
- K Abe
- Kobe University, Kobe, Hyogo 657-8501, Japan
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Abstract
Mitochondrial DNA (mtDNA) variation has recently been suggested to have an association with athletic performance or physical endurance. Since mtDNA is haploid and lacks recombination, specific mutations in the mtDNA genome associated with human exercise tolerance or intolerance arise and remain in particular genetic backgrounds referred to as haplogroups. To assess the possible contribution of mtDNA haplogroup-specific variants to differences in elite athletic performance, we performed a population-based study of 152 Korean elite athletes [77 sprint/power athletes (SPA) and 75 endurance/middle-power athletes (EMA)] and 265 non-athletic controls (CON). The overall haplogroup distribution of EMA differed significantly from CON (p<0.01), but that of SPA did not. The EMA have an excess of haplogroups M* (OR 4.38, 95% CI 1.63-11.79, p=0.003) and N9 (OR 2.32, 95% CI 0.92-5.81, p=0.042), but a dearth of haplogroup B (OR 0.26, 95% CI 0.09-0.75, p=0.003) compared with the CON. Thus, our data imply that specific mtDNA lineages may provide a significant effect on elite Korean endurance status, although functional studies with larger sample sizes are necessary to further substantiate these findings.
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Affiliation(s)
- K C Kim
- Biological Sciences, Dankook University, Cheonan, Republic of Korea
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Batmunkh T, Kim YJ, Lee KY, Cayetano MG, Jung JS, Kim SY, Kim KC, Lee SJ, Kim JS, Chang LS, An JY. Time-resolved measurements of PM2.5 carbonaceous aerosols at Gosan, Korea. J Air Waste Manag Assoc 2011; 61:1174-1182. [PMID: 22168101 DOI: 10.1080/10473289.2011.609761] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
In order to better understand the characteristics of atmospheric carbonaceous aerosol at a background site in Northeast Asia, semicontinuous organic carbon (OC) and elemental carbon (EC), and time-resolved water-soluble organic carbon (WSOC) were measured by a Sunset OC/ EC and a PILS-TOC (particle-into-liquid sampler coupled with an online total organic carbon) analyzer, respectively, at the Gosan supersite on Jeju Island, Korea, in the summer (May 28-June 17) and fall (August 24-September 30) of 2009. Hourly average OC concentration varied in the range of approximately 0.87-28.38 microgC m-3, with a mean of 4.07+/- 2.60 microgC m-3, while the hourly average EC concentration ranged approximately from 0.04 to 8.19 .microgC m-3, with a mean of 1.35 +/- 0.71 microgC m-3, from May 28 to June 17, 2009. During the fall season, OC varied in the approximate range 0.9-9.6 microgC m-3, with a mean of 2.30 +/-0.80 microgC m-3, whereas EC ranged approximately from 0.01 to 5.40 microgC m-3, with a mean of 0.66 +/- 0.38 microgC m-3. Average contributions of EC to TC and WSOC to OC were 26.0% +/- 9.7% and 20.6% +/-7.4%, and 37.6% +/- 23.5% and 57.2% +/- 22.2% during summer and fall seasons, respectively. As expected, clear diurnal variation of WSOC/OC was found in summer, varying from 0.22 during the nighttime up to 0.72 during the daytime, mainly due to the photo-oxidation process. In order to investigate the effect of air mass pathway on the characteristics of carbonaceous aerosol, 5-day back-trajectory analysis was conducted using the HYSPLIT model. The air mass pathways were classified into four types: Continental (CC), Marine (M), East Sea (ES) and Korean Peninsula (KP). The highest OC/EC ratio of 3.63 was observed when air mass originated from the Continental area (CC). The lowest OC/EC ratio of 0.79 was measured when air mass originated from the Marine area (M). A high OC concentration was occasionally observed at Gosan due to local biomass burning activities. The contribution of secondary OC to total OC varied approximately between 8.4% and 32.2% and depended on air mass type.
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Affiliation(s)
- T Batmunkh
- Advanced Environmental Monitoring Research Center (ADEMRC), School of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, Korea
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Lee K, Kim JH, Lee JH, Lee WY, Park MS, Kim JY, Kim KC, Lee MG, Jung KS, Kim YS, Shin YM, Koh Y. Acute respiratory distress syndrome caused by miliary tuberculosis: a multicentre survey in South Korea. Int J Tuberc Lung Dis 2011; 15:1099-103. [PMID: 21740675 DOI: 10.5588/ijtld.10.0557] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Miliary tuberculosis (TB) is an unusual cause of acute respiratory distress syndrome (ARDS). OBJECTIVE To evaluate the clinical characteristics and outcomes of patients with ARDS caused by miliary TB admitted to the intensive care unit (ICU). DESIGN A total of 67 patients were enrolled during the period 1999-2008. RESULTS The median age of the patients was 56 years (range 17-81), 19 (28.4%) were aged >71 years, and 38 (56.7%) were male. All-cause mortality in the ICU and hospital were respectively 58.2% and 61.2%. Of the total number of enrolled patients, 49 (73.1%) were prescribed anti-tuberculosis medication within 3 days of hospital admission. On the day of ARDS diagnosis (10.0 ± 3.7 vs. 7.4 ± 3.5, P = 0.005), non-survivors had a significantly higher Sequential Organ Failure Assessment (SOFA) score than survivors. Multivariate analysis showed that SOFA score on the day of ARDS diagnosis was a significant predictor of survival (OR 0.809, 95%CI 0.691-0.946, P = 0.008). It was difficult to determine the efficacy of systemic corticosteroids on patient survival. CONCLUSION ARDS caused by miliary TB was associated with a high in-hospital mortality rate, with SOFA score on the day of ARDS diagnosis being a valuable prognostic indicator.
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Affiliation(s)
- K Lee
- Department of Internal Medicine, Pusan National University School of Medicine, Busan, Korea
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Lee YH, Kim KC, Cho MS, Hong YM. Changes of pulmonary pathology and gene expressions after simvastatin treatment in the monocrotaline-induced pulmonary hypertension rat model. Korean Circ J 2011; 41:518-27. [PMID: 22022327 PMCID: PMC3193043 DOI: 10.4070/kcj.2011.41.9.518] [Citation(s) in RCA: 6] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2010] [Revised: 01/03/2011] [Accepted: 01/24/2011] [Indexed: 11/11/2022] Open
Abstract
BACKGROUND AND OBJECTIVES Simvastatin's properties are suggestive of a potential pathophysiologic role in pulmonary hypertension. The objectives of this study were to investigate changes of pulmonary pathology and gene expressions, including endothelin (ET)-1, endothelin receptor A (ERA), inducible nitric oxide synthase (NOS2), endothelial nitric oxide synthase (NOS3), matrix metalloproteinase (MMP) 2, tissue inhibitor of matrix metalloproteinases (TIMP) and caspase 3, and to evaluate the effect of simvastatin on monocrotaline (M)-induced pulmonary hypertension. MATERIALS AND METHODS Six week old male Sprague-Dawley rats were treated, as follows: control group, subcutaneous (sc) injection of saline; M group, sc injection of M (60 mg/kg); and simvastatin group, sc injection of M (60 mg/kg) plus 10 mg/kg/day simvastatin orally. RESULTS On day 28, right ventricular hypertrophy (RVH) significantly decreased in the simvastatin group compared to the M group. Similarly, right ventricular pressure significantly decreased in the simvastatin group on day 28. From day 7, the ratio of medial thickening of the pulmonary artery was significantly increased in the M group, but there was no significant change in the simvastatin group. The number of muscular pulmonary arterioles was significantly reduced in the simvastatin group. On day 5, gene expressions of ET-1, ERA, NOS2, NOS3, MMP and TIMP significantly decreased in the simvastatin group. CONCLUSION Administration of simvastatin exerted weak inhibitory effects on RVH and on the number of muscular pulmonary arterioles, during the development of M-induced pulmonary hypertension in rats. Simvastatin decreased gene expressions on day 5.
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Affiliation(s)
- Yun Hee Lee
- Department of Pediatrics, School of Medicine, Ewha Womans University, Seoul, Korea
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Koo HS, Kim KC, Hong YM. Gene expressions of nitric oxide synthase and matrix metalloproteinase-2 in monocrotaline-induced pulmonary hypertension in rats after bosentan treatment. Korean Circ J 2011; 41:83-90. [PMID: 21430993 PMCID: PMC3053565 DOI: 10.4070/kcj.2011.41.2.83] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2010] [Accepted: 07/21/2010] [Indexed: 11/30/2022] Open
Abstract
Background and Objectives Nitric oxide (NO) is a major endothelium dependent vasomediator and growth inhibitor. NO synthesis is catalyzed by endothelial nitric oxide synthase (eNOS), and NO can also produce peroxynitrite, which activates matrix metalloproteinases (MMPs). The purpose of this study was to determine the gene expression of eNOS and MMP-2 in the lungs of a rat model of pulmonary hypertension after bosentan treatment. Materials and Methods Six-week-old male Sprague-Dawley rats were treated as follows: control group, subcutaneous (sc) injection of saline; monocrotaline (MCT) group, sc injection of MCT (60 mg/kg); and bosentan group, sc injection of MCT (60 mg/kg) plus 20 mg/day bosentan orally. The rats were sacrificed after 1, 5, 7, 14 and 28 days. Results The right ventricle/(left ventricle+septum) ratio significantly increased in the MCT group compared to the control group on day 14 and 28. The expression of eNOS messenger ribonucleic acid was significantly increased in the MCT group compared to the control group on day 28. MMP-2 gene expression was significantly increased in the MCT-treated rats compared to the control group on day 5 and 28. Following bosentan treatment to reduce pulmonary hypertension, the expression levels of MMP-2 gene were significantly decreased on day 7 and 28. eNOS and tissue inhibitor of MMPs genes were also significantly decreased on day 28 after bosentan treatment. Conclusion These results suggest that elevated eNOS expression may be responsible for MMP-2 activation. The causal relationship between eNOS and MMP-2 and their role in pulmonary hypertension require further investigations.
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Affiliation(s)
- Hee Sun Koo
- Department of Pediatrics, School of Medicine, Ewha Womans University, Seoul, Korea
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Lim KA, Kim KC, Cho MS, Lee BE, Kim HS, Hong YM. Gene expression of endothelin-1 and endothelin receptor a on monocrotaline-induced pulmonary hypertension in rats after bosentan treatment. Korean Circ J 2010; 40:459-64. [PMID: 20967148 PMCID: PMC2957645 DOI: 10.4070/kcj.2010.40.9.459] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2009] [Accepted: 03/09/2010] [Indexed: 01/31/2023] Open
Abstract
BACKGROUND AND OBJECTIVES Endothelin (ET)-1, a potent endothelium-derived vasoconstrictor peptide, has a potential pathophysiologic role in pulmonary hypertension. Bosentan, a dual ET receptor (ET(A)/ET(B)) antagonist, is efficacious in treatment of pulmonary hypertension. The objectives of this study were to investigate the expression of ET-1 and ET receptor A (ERA) genes and to evaluate the effect of bosentan in monocrotaline (MCT)-induced pulmonary hypertension. MATERIALS AND METHODS Four-week-old male Sprague-Dawley rats were treated as follows: control (n=36), subcutaneous (sc) injection of saline; MCT (n=36), sc injection of MCT (60 mg/kg); and bosentan (n=36), sc injection of MCT (60 mg/kg) plus 25 mg/kg/day bosentan orally. RESULTS Serum ET-1 concentrations in the MCT group were higher than the control group on day 28 and 42. Quantitative analysis of peripheral pulmonary arteries revealed that the increase in medial wall thickness after MCT injection was significantly attenuated in the bosentan group on day 28 and 42. In addition, the increase in the number of intra-acinar muscular arteries after MCT injection was reduced by bosentan on day 14, 28 and 42. The levels of ET-1 and ERA gene expression were significantly increased in the MCT group compared with control group on day 5, and bosentan decreased the expression of ET-1 on day 5. CONCLUSION ET-1 contributes to the progression of cardiopulmonary pathology in rats with MCT-induced pulmonary hypertension. Administration of bosentan reduced ET-1 gene expression in MCT-induced pulmonary hypertension in rats.
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Affiliation(s)
- Kyoung Ah Lim
- Department of Pediatrics, College of Medicine, CHA University, Pocheon, Korea
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Ji HS, Kang M, Kim KC. Abstract: 133 HEMODYNAMIC AND HEMORHEOLOGICAL FEATURE INVESTIGATION IN RIGHT CORONARY ARTERY STENOSIS WITH 83% SEVERITY. ATHEROSCLEROSIS SUPP 2009. [DOI: 10.1016/s1567-5688(09)70247-8] [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: 10/20/2022]
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Lim KA, Shim JY, Cho SH, Kim KC, Han JJ, Hong YM. Effect of endothelin receptor blockade on monocrotaline-induced pulmonary hypertension in rats. Korean J Pediatr 2009. [DOI: 10.3345/kjp.2009.52.6.689] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Kyoung Ah Lim
- Department of Pediatrics, College of Medicine, Pochon CHA University, Seoul, Korea
| | - Jung Yun Shim
- Department of Pathology, College of Medicine, Pochon CHA University, Seoul, Korea
| | - Sang Ho Cho
- Department of Pathology, College of Medicine, Pochon CHA University, Seoul, Korea
| | - Kwan Chang Kim
- Department of Thoracic and Cardiovascular Surgery, Ewha Womans University, Seoul, Korea
| | - Jae Jin Han
- Department of Thoracic and Cardiovascular Surgery, Ewha Womans University, Seoul, Korea
| | - Young Mi Hong
- Department of Pediatrics, School of Medicine, Ewha Womans University, Seoul, Korea
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Abstract
In the present study, the authors investigated the management of mechanical valve thrombosis (MVT). From January 1981 through March 2006, 2,908 mechanical valve replacements were performed in 2,298 patients at our institution. Twenty (0.87%) patients presented with MVT, 14 (70.0%) were women, and the mean age of the patients was 42.0+/-14.0 (27-66) yr. Thrombosis involved mitral in 14 (70.0%), aortic in 2 (10.0%), tricuspid/aortic in 1 (5%), and tricuspid in 3 (15%). The interval from first operation to valve thrombosis was 121.8+/-75.4 (0.9-284.7) months. The most frequent clinical presentation was heart failure (13/20, 65%), and predisposing causes of MVT were: poor compliance with warfarin (7), pregnancy (5), drug interaction (2), and unknown (6). All 20 patients underwent valve replacement: mitral (14, 70.0%), tricuspid (3, 15.0%), aortic (2, 10%) and tricuspid/aortic (1, 5%). One early death occurred due to left ventricular failure, but no late mortality occurred during 63.3+/-49.9 (0.5-165.1) months of follow-up. MVT was treated successfully, and pregnancy and inadequate anticoagulation were found to influence the occurrence of this rare complication.
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Affiliation(s)
- Hyuk Ahn
- Department of Thoracic and Cardiovascular Surgery, Seoul National University Hospital, Seoul, Korea
| | - Kyung-Hwan Kim
- Department of Thoracic and Cardiovascular Surgery, Seoul National University Hospital, Seoul, Korea
| | - Kwan Chang Kim
- Department of Thoracic and Cardiovascular Surgery, Ewha University Hospital, Seoul, Korea
| | - Chang Young Kim
- Department of Thoracic and Cardiovascular Surgery, In-Je University Hospital, Goyang, Korea
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Kim IS, Lee JH, Kim KC, Kim YR, Park JK, Lim SY, Ryu YJ, Chun EM, Chang JH, Kim YK, Shim SS, Sung SH. Spontaneous Massive Hemothorax Associated with Solitary Posterior Mediastinal Neurilemmoma. Tuberc Respir Dis (Seoul) 2008. [DOI: 10.4046/trd.2008.65.5.426] [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: 11/24/2022] Open
Affiliation(s)
- In Seon Kim
- Department of Internal Medicine, Ewha Womans University School of Medicine, Seoul, Korea
| | - Jin Hwa Lee
- Department of Internal Medicine, Ewha Womans University School of Medicine, Seoul, Korea
| | - Kwan Chang Kim
- Department of Thoracic Surgery, Ewha Womans University School of Medicine, Seoul, Korea
| | - Yoo Ri Kim
- Department of Internal Medicine, Ewha Womans University School of Medicine, Seoul, Korea
| | - Jin Kyeong Park
- Department of Internal Medicine, Ewha Womans University School of Medicine, Seoul, Korea
| | - So Yeon Lim
- Department of Internal Medicine, Ewha Womans University School of Medicine, Seoul, Korea
| | - Yon Ju Ryu
- Department of Internal Medicine, Ewha Womans University School of Medicine, Seoul, Korea
| | - Eun Mi Chun
- Department of Internal Medicine, Ewha Womans University School of Medicine, Seoul, Korea
| | - Jung Hyun Chang
- Department of Internal Medicine, Ewha Womans University School of Medicine, Seoul, Korea
| | - Yoo Kyung Kim
- Department of Radiology, Ewha Womans University School of Medicine, Seoul, Korea
| | - Sung Shin Shim
- Department of Radiology, Ewha Womans University School of Medicine, Seoul, Korea
| | - Sun Hee Sung
- Department of Pathology, Ewha Womans University School of Medicine, Seoul, Korea
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Lee JR, Kwak J, Kim KC, Min SK, Kim WH, Kim YJ, Rho JR. Comparison of lateral tunnel and extracardiac conduit Fontan procedure. Interact Cardiovasc Thorac Surg 2007; 6:328-30. [PMID: 17669857 DOI: 10.1510/icvts.2006.146928] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [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: 11/06/2022] Open
Abstract
The purpose of this study was to compare the outcomes of lateral tunnel (LT) and extracardiac conduit (ECC) Fontan procedures at a single institution. From April 1995 to December 2006, 165 Fontan procedures were performed (67 LT, 98 ECC). Pre-, intra- and postoperative variable values were compared between two different techniques. Operative mortality was 5 (3 LT, 2 ECC). Immediate postoperative transpulmonary gradient (LT 8.5+/-ECC 2.5 vs. 6.6+/-2.4 mmHg) and central venous pressure (LT 18.3+/-3.8 vs. ECC 15.6+/-2.4 mmHg) showed significant difference (P<0.001). The LT patients had a higher incidence of sinus node dysfunction in the postoperative period (22.4% vs. ECC 11.2%; P=0.05). Mean follow-up was 74.1+/-31.5 months in LT, and 31.7+/-28.1 months in ECC patients. There was one late death. Actuarial survival at 10 years is 92% for LT, and 89% for ECC patients (P=0.796). The LT and ECC, both, showed comparable early and mid-term outcomes in operative morbidity and mortality, postoperative hemodynamics, survival. Use of ECC for modified Fontan operation reduces the risk of sinus node dysfunction and shows better outcome of immediate postoperative hemodynamics.
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Affiliation(s)
- Jeong Ryul Lee
- Department of Thoracic and Cardiovascular Surgery, Seoul National University Children's Hospital, Seoul National University College of Medicine, Seoul National University Clinical Research Institute, Jongro-gu, South Korea.
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Kim KC, Cho KR, Kim YJ, Sohn DW, Kim KB. Long-term results of the Cox-Maze III procedure for persistent atrial fibrillation associated with rheumatic mitral valve disease: 10-year experience☆. Eur J Cardiothorac Surg 2007; 31:261-6. [PMID: 17158057 DOI: 10.1016/j.ejcts.2006.11.017] [Citation(s) in RCA: 29] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2006] [Revised: 11/11/2006] [Accepted: 11/14/2006] [Indexed: 10/23/2022] Open
Abstract
OBJECTIVE We evaluated the long-term results of the Cox-Maze III procedure (CM-III) for persistent atrial fibrillation (AF) associated with rheumatic mitral valve (MV) disease. METHODS We analyzed 127 patients who underwent the CM-III combined with a rheumatic MV procedure between 1994 and 2004. In-hospital mortalities were excluded from the study. RESULTS There were 10 late deaths and the mean follow-up duration was 7.1+/-2.8 years (range, 13 months to 11.5 years). Normal sinus rhythm was restored in 88.2% (112/127) after the CM-III. Right atrial contractility was demonstrable in 100% (112/112) and left atrial contractility in 68.8% (77/112) of the patients restored to sinus rhythm. Fifteen patients never regained sinus rhythm after the CM-III (AF treatment failure). Permanent pacemakers were implanted in 4.7% (6/127) of the patients during the follow-up. Late recurrence of AF developed in 34 of 112 patients at 44+/-27 months postoperatively, and sinus rhythm was restored in 29 of 34 patients by administration of an antiarrhythmic medication. Independent risk factors for late AF recurrence were longer duration of AF (>60 months) (odds ratio (OR)=2.758, p=0.025), increased left atrial size (OR=1.113, p=0.004). Freedom from AF recurrence was 93% at 1-year, 82% at 3 years, 71% at 5 years, and 63% at 7 years. Risk factors for AF treatment failure were longer duration of AF (>60 months) (p<0.001) and increased patient age (p=0.030). A higher prevalence of significant late tricuspid regurgitation was observed in patients with AF treatment failure and those with late AF recurrence. CONCLUSIONS The CM-III for persistent AF associated with rheumatic MV disease demonstrated a progressively decreased cure rate during the follow-up period. Early surgical therapy, aggressive left atrial reduction, and correction of tricuspid regurgitation at the time of surgery may increase the long-term success rate.
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Affiliation(s)
- Kwan Chang Kim
- Department of Thoracic and Cardiovascular Surgery, Seoul National University Hospital, Seoul, Republic of Korea
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Rhee KJ, Kim KC, Lee JK, Hwang DS, Shin HD, Yang JY, Kim YM. Incomplete discoid glenoid labrum combined with a ganglion cyst of the spinoglenoid notch. ACTA ACUST UNITED AC 2006; 88:1390-2. [PMID: 17012434 DOI: 10.1302/0301-620x.88b10.18027] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
In a 41-year-old man, right-sided infraspinatus muscle weakness was associated with compression of the suprascapular nerve caused by a spinoglenoid ganglion cyst. The lesion was confirmed using electromyography and MRI. In addition, arthroscopy showed an incomplete discoid labrum. The free inner edge of the labrum was removed as in a meniscectomy of a discoid meniscus in the knee joint. Arthroscopic decompression of the cyst was performed through a juxtaglenoid capsulotomy which was left open. Neurological function recovered completely.
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Affiliation(s)
- K J Rhee
- Department of Orthopaedic Surgery, Chungnam National University College of Medicine, Jung-Gu, Daejeon 301-040, Republic of Korea
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Woo SH, Yu SO, Kim KC, Silao JI, Lee GJ, Kim JS. Salvage of the lower extremity free flap using cross-leg venous repair. J Plast Reconstr Aesthet Surg 2006; 59:928-34. [PMID: 16920584 DOI: 10.1016/j.bjps.2006.01.023] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2005] [Revised: 12/16/2005] [Accepted: 01/01/2006] [Indexed: 11/19/2022]
Abstract
This retrospective study was designed to evaluate a salvage technique for free flaps suffering venous congestion by using a cross-leg vein repair in patients with venous-impaired lower extremities. Four free flap reconstructions were performed using the latissimus dorsi muscle to reconstruct soft tissue defects in the lower extremity. The recipient artery was confined to the ipsilateral leg and the venous anastomosis was performed with a long saphenous vein from the contralateral side. The legs were immobilised together by means of an external fixator. All patients were males with a mean age of 31 years. The mean time of pedicle division was 8.8 days (7-10). The mean size of the free flap was 186.5 cm(2). All flaps survived after pedicle division without venous congestion. There were no complications such as joint stiffness or donor site morbidity except for a linear scar. The cross-leg venous repair is a refinement of a salvage procedure for compromised free flaps used in the reconstruction of severe soft tissue defects in vascularly compromised lower extremities.
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Affiliation(s)
- S H Woo
- Kim & Woo's Institute for Hand & Reconstructive Microsurgery, Daegu, Korea.
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Croce MV, Isla-Larrain M, Remes-Lenicov F, Colussi AG, Lacunza E, Kim KC, Gendler SJ, Segal-Eiras A. MUC1 cytoplasmic tail detection using CT33 polyclonal and CT2 monoclonal antibodies in breast and colorectal tissue. Histol Histopathol 2006; 21:849-55. [PMID: 16691537 DOI: 10.14670/hh-21.849] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
UNLABELLED The immunohistochemical detection (IHC) of MUC1-CT employing a polyclonal antibody (CT33) in relation to CT2 monoclonal antibody (MAb) was analyzed. Western blot (WB) was used to determine the molecular mass of CT. MATERIALS AND METHODS We studied 163 breast and 89 colorectal cancer specimens, 10 breast and 14 colorectal benign conditions, and 12 breast and 20 colorectal normal samples. From each tumor sample, subcellular fractions were obtained and analyzed by SDS-PAGE and WB. A nonparametric statistical analysis was employed; data were standardized and a Kendall-Tau correlation was applied. RESULTS By IHC, 146/163 (90%) and 151/163 (93%) of breast cancer were positive with CT33 and CT2, respectively; a statistically significant correlation was obtained (t=0.5199). Seven out of ten (70%) benign breast specimens were positive with CT33 while all samples stained with CT2; in normal breast sample tissues, all were positive with both Abs. In colorectal cancer samples, both antibodies stained 47/89 (53%) samples; CT2 reacted in 13/14 (93%) of benign samples while CT33 showed a positive reaction in 9/14 (64%) of benign specimens. In normal samples, CT2 showed staining in 17/20 (85%) of samples and CT33 was reactive in 12/20 (60%). By WB, in breast and colorectal cancer samples, similar results were obtained with both antibodies: a main band at about 30kDa which represents the smaller subunit. CONCLUSION CT33 polyclonal antibody has demonstrated its efficacy to detect MUC1 in breast and colorectal cancer tissues with similar reactivity to CT2. It is worthwhile to affirm that CT33 is a good indicator of MUC1 expression.
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Affiliation(s)
- M V Croce
- Centre of Basic and Applied Immunological Research (CINIBA), Faculty of Medical Sciences, UNLP, La Plata, Argentina
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Techakittiroj C, Kim KC, Andersson H, Li MM. 9p subtelomere deletion: pathogenic mutation or normal variant? Beijing Da Xue Xue Bao Yi Xue Ban 2006; 38:92-3. [PMID: 16415976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
We report an apparently benign familial 9p subtelomere deletion identified using chromosome-arm-specific subtelomere probes in a patient with multiple congenital anomalies. Our experience demonstrated that the discovery of a subtelomeric deletion and/or duplication does not always guarantee the identification of the etiology for the patients phenotype and a positive finding with subtelomere probes should always be followed by parental study with the same probe in order to distinguish a disease causing alteration from a benign familial polymorphism.
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Bhat SS, Schmidt KR, Ladd S, Kim KC, Schwartz CE, Simensen RJ, DuPont BR, Stevenson RE, Srivastava AK. Disruption of DMD and deletion of ACSL4 causing developmental delay, hypotonia, and multiple congenital anomalies. Cytogenet Genome Res 2006; 112:170-5. [PMID: 16276108 DOI: 10.1159/000087531] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2004] [Accepted: 03/07/2005] [Indexed: 01/06/2023] Open
Abstract
We have studied a male patient with significant developmental delay, growth failure, hypotonia, girdle weakness, microcephaly, and multiple congenital anomalies including atrial (ASD) and ventricular (VSD) septal defects. Detailed cytogenetic and molecular analyses revealed three de novo X chromosome aberrations and a karyotype 46,Y,der(X)inv(X) (p11.4q11.2)inv(X)(q11.2q21.32 approximately q22.2)del(X)(q22.3q22.3) was determined. The three X chromosome aberrations in the patient include: a pericentric inversion (inv 1) that disrupted the Duchenne muscular dystrophy (DMD) gene, dystrophin, at Xp11.4; an Xq11.2q21.32 approximately q22.2 paracentric inversion (inv 2) putatively affecting no genes; and an interstitial deletion at Xq22.3 that results in functional nullisomy of several known genes, including a gene previously associated with X-linked nonsyndromic mental retardation, acyl-CoA synthetase long chain family member 4 (ACSL4). These findings suggest that the disruption of DMD and the absence of ACSL4 in the patient are responsible for neuromuscular disease and cognitive impairment.
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Affiliation(s)
- S S Bhat
- J.C. Self Research Institute of Human Genetics, Greenwood Genetic Center, Greenwood, SC, USA
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