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Ki DW, Choi DC, Won YS, Lee SJ, Kim YH, Lee IK, Yun BS. Three new phthalide derivatives from culture broth of Dentipellis fragilis and their cytotoxic activities. J Antibiot (Tokyo) 2024:10.1038/s41429-024-00720-8. [PMID: 38519550 DOI: 10.1038/s41429-024-00720-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 01/15/2024] [Accepted: 03/08/2024] [Indexed: 03/25/2024]
Abstract
Three new phthalide derivatives (1‒3) together with two known compounds, erinaceolactone B (4) and hericerin III (5), were isolated from the culture broth of Dentipellis fragilis. The chemical structures of 1‒5 were determined by analyses of their 1D-, 2D-NMR, and MS. The absolute configuration of 1 was determined by CD analysis. The isolated compounds were assessed for their cytotoxic activities against A549, DU145, HCT116, and HT1080 cancer cell lines. Compounds 1‒5 showed strong cytotoxic activities against DU145, with IC50 values ranging from 14.3 to 16.1 µM. Additionally, all compounds showed moderate or weak cytotoxic activities against all cell lines except for compounds 4 and 1 which showed no cytotoxic activities against A549 and HCT116 cancer cell lines, respectively. Against HT1080 cancer cell line, only compound 2 displayed moderate cytotoxic activity.
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Affiliation(s)
- Dae-Won Ki
- Division of Biotechnology and Advanced Institute of Environment and Bioscience, College of Environmental and Bioresource Sciences, Jeonbuk National University, Iksan-si, 54596, Korea.
| | - Dae-Cheol Choi
- Division of Biotechnology and Advanced Institute of Environment and Bioscience, College of Environmental and Bioresource Sciences, Jeonbuk National University, Iksan-si, 54596, Korea
| | - Yeong-Seon Won
- Functional Biomaterial Research Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Korea
- Division of Research Management, Department of Bioresource Industrialization, Honam National Institute of Biological Resource, Mokpo, 58762, Republic of Korea
| | - Seung-Jae Lee
- Functional Biomaterial Research Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Korea
- Department of Applied Biotechnology, University of Science and Technology (UST), Daejeon, 34113, Korea
| | - Young-Hee Kim
- Division of Biotechnology and Advanced Institute of Environment and Bioscience, College of Environmental and Bioresource Sciences, Jeonbuk National University, Iksan-si, 54596, Korea
| | - In-Kyoung Lee
- Division of Biotechnology and Advanced Institute of Environment and Bioscience, College of Environmental and Bioresource Sciences, Jeonbuk National University, Iksan-si, 54596, Korea
| | - Bong-Sik Yun
- Division of Biotechnology and Advanced Institute of Environment and Bioscience, College of Environmental and Bioresource Sciences, Jeonbuk National University, Iksan-si, 54596, Korea.
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Cho HD, Lee KW, Won YS, Kim JH, Seo KI. Cultivated Orostachys japonicus extract inhibits VEGF-induced angiogenesis via regulation of VEGFR2 signaling pathway in vitro and in vivo. J Ethnopharmacol 2020; 256:112664. [PMID: 32045685 DOI: 10.1016/j.jep.2020.112664] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 01/02/2020] [Accepted: 02/07/2020] [Indexed: 06/10/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Orostachys japonicus A. Berger (O. japonicus), so-called Wa-song in Korea, a traditional food and medicine that grows on mountain rocks and roof tiles. Wa-song containing various phenolic compounds have been reported as a medicinal plant for prevention of fibrosis, cancer, inflammation, and oxidative damage. AIM OF THE STUDY The present study was designed to examine the anti-angiogenic effects of cultivated Orostachys japonicus 70% ethanol extract (CE) in vascular endothelial growth factor (VEGF)-stimulated human umbilical vein endothelial cells (HUVECs). MATERIALS AND METHODS CE was prepared with 70% ethanol. HUVECs, rat aortic rings, and matrigel plug in mice were treated with CE (10-20 μg/mL) and VEGF (20-50 ng/mL), and the anti-angiogenic activities of CE were analyzed by SRB, wound healing, trans-well invasion, capillary-like tubule formation, rat aortas, Western blot, and matrigel plug assay. Phenolic compounds in CE were analyzed using a high-performance liquid chromatography (HPLC)-PDA system. RESULTS Treatment of CE (10-20 μg/mL) markedly suppressed proliferation of HUVECs in the presence (from 136.5% to 112.2%) or absence of VEGF (from 100.0% to 92.1%). The proliferation inhibitory effect of CE was caused by G0/G1 cell cycle arrest, and the decrease of CDK-2, CDK-4, Cyclin D1 and Cyclin E1. Furthermore, CE treatment showed significant angiogenesis inhibitory effects on motility, invasion and micro-vessel formation of HUVECs, rat aortic rings and subcutaneous matrigels under VEGF-stimulation condition. In HUVECs, CE-induced anti-angiogenic effect was regulated by inhibition of the PI3K/AKT/mTOR, MAPK/p38, MAPK/ERK, FAK-Src, and VEGF-VEGFR2 signaling pathways. CONCLUSION This study demonstrated that CE might be used as a potential natural substance, multi-targeted angiogenesis inhibitor, functional food material.
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Affiliation(s)
- Hyun-Dong Cho
- Industry-Academy Cooperation, Dong-A University, Busan, 49315, Republic of Korea
| | - Kwan-Woo Lee
- Department of Biotechnology, Dong-A University, Busan, 49315, Republic of Korea
| | - Yeong-Seon Won
- Department of Biotechnology, Dong-A University, Busan, 49315, Republic of Korea
| | - Jeong-Ho Kim
- Department of Food Science and Biotechnology, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Kwon-Il Seo
- Department of Biotechnology, Dong-A University, Busan, 49315, Republic of Korea.
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Kim JH, Cho HD, Won YS, Hong SM, Moon KD, Seo KI. Anti-Fatigue Effect of Prunus Mume Vinegar in High-Intensity Exercised Rats. Nutrients 2020; 12:nu12051205. [PMID: 32344799 PMCID: PMC7281981 DOI: 10.3390/nu12051205] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [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] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 04/21/2020] [Accepted: 04/23/2020] [Indexed: 02/08/2023] Open
Abstract
Nowadays, new types of vinegar have been developed using various raw materials and biotechnological processes. The fruit of Prunus mume has been extensively distributed in East Asia and used as a folk medication for fatigue. In this study, the Prunus mume vinegar (PV) was produced by a two-step fermentation and was evaluated for its anti-fatigue activity by C2C12 myoblasts and high-intensity exercised rats. The administration of PV significantly improved running endurance and glycogen accumulation in the liver and muscle of PV supplemented rats compared to sedentary and exercised control groups. In addition, PV supplementation elicited lower fatigue-related serum biomarkers, for instance, ammonia, inorganic phosphate, and lactate. PV administered rats exhibited higher lactate dehydrogenase activity and glutathione peroxidase activity, and lower creatine kinase activity and malondialdehyde levels. Furthermore, phenolic compounds in PV were identified using HPLC analysis. The phenolic acids analyzed in PV were protocatechuic acid, syringic acid, chlorogenic acid, and its derivates. These results indicate that the administration of PV with antioxidative property contributes to the improvement of fatigue recovery in exhausted rats. The findings of this study suggest that the PV containing various bioactive constituents can be used as a functional material against fatigue caused by high-intensity exercise.
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Affiliation(s)
- Jeong-Ho Kim
- Department of Food Science and Technology, Kyungpook National University, Daegu 41566, Korea; (J.-H.K.); (K.-D.M.)
| | - Hyun-Dong Cho
- Institute of Agricultural Life Sciences, Dong-A University, Busan 49315, Korea;
| | - Yeong-Seon Won
- Department of Food Biotechnology, Dong-A University, Busan 49315, Korea;
| | - Seong-Min Hong
- College of Pharmacy and Gachon Institute of Pharmaceutical Science, Gachon University, Incheon 21936, Korea;
| | - Kwang-Deog Moon
- Department of Food Science and Technology, Kyungpook National University, Daegu 41566, Korea; (J.-H.K.); (K.-D.M.)
| | - Kwon-Il Seo
- Department of Food Biotechnology, Dong-A University, Busan 49315, Korea;
- Correspondence: ; Tel.: +82-51-200-7565
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Won YS, Seo KI. Sanggenol L promotes apoptotic cell death in melanoma skin cancer cells through activation of caspase cascades and apoptosis-inducing factor. Food Chem Toxicol 2020; 138:111221. [PMID: 32084496 DOI: 10.1016/j.fct.2020.111221] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 01/22/2020] [Accepted: 02/17/2020] [Indexed: 12/18/2022]
Abstract
Sanggenol L is one component of root bark of Morus alba. The molecular and cellular mechanisms of sanggenol L effects on melanoma cells are not well known. Recently, melanoma is the most common skin cancer with a high mortality rate not only in United States, but also in East Asia. Therefore, safe and effective treatments for melanoma treatment are required. In this study, we investigated whether or not sanggenol L possesses anti-cancer activity in human and mouse melanoma skin cancer cells. Sanggenol L treatment exerted significant cell growth inhibitory effects and inhibited colony formation capacity against B16, SK-MEL-2, and SK-MEL-28 melanoma skin cancer cells, whereas HaCaT human epithelial keratinocyte cells was unaffected by sanggenol L treatment. Sanggenol L treatment resulted in apoptotic cell death in melanoma skin cancer cells, which was characterized by accumulation of apoptotic cells, nuclear condensation, and apoptotic bodies. We also showed that sanggenol L treatment induced caspase-dependent apoptosis (up-regulation of Bax and cleaved-PARP or down-regulation of Bid, Bcl-2, procaspse-3, -8, and -9), induction of caspase-independent apoptosis (up-regulation of AIF and Endo G on cytosol) in melanoma skin cancer cells. These results suggest that sanggenol L induces caspase-dependent and -independent apoptosis in melanoma skin cancer cells.
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Affiliation(s)
- Yeong-Seon Won
- Department of Biotechnology, Dong-A University, Busan, 49315, Republic of Korea
| | - Kwon-Il Seo
- Department of Biotechnology, Dong-A University, Busan, 49315, Republic of Korea.
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Won YS, Seo KI. Sanggenol L Induces Apoptosis and Cell Cycle Arrest via Activation of p53 and Suppression of PI3K/Akt/mTOR Signaling in Human Prostate Cancer Cells. Nutrients 2020; 12:nu12020488. [PMID: 32075054 PMCID: PMC7071324 DOI: 10.3390/nu12020488] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [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] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 01/22/2020] [Accepted: 02/10/2020] [Indexed: 12/26/2022] Open
Abstract
Prostate cancer is the most common cancer in Western countries. Recently, Asian countries are being affected by Western habits, which have had an important role in the rapid increase in cancer incidence. Sanggenol L (San L) is a natural flavonoid present in the root barks of Morus alba, which induces anti-cancer activities in ovarian cancer cells. However, the molecular and cellular mechanisms of the effects of sanggenol L on human prostate cancer cells have not been elucidated. In this study, we investigated whether sanggenol L exerts anti-cancer activity in human prostate cancer cells via apoptosis and cell cycle arrest. Sanggenol L induced caspase-dependent apoptosis (up-regulation of PARP and Bax or down-regulation of procaspase-3, -8, -9, Bid, and Bcl-2), induction of caspase-independent apoptosis (up-regulation of AIF and Endo G on cytosol), suppression of cell cycle (down-regulation of CDK1/2, CDK4, CDK6, cyclin D1, cyclin E, cyclin A, and cyclin B1 or up-regulation of p53 and p21), and inhibition of PI3K/Akt/mTOR signaling (down-regulation of PI3K, p-Akt, and p-mTOR) in prostate cancer cells. These results suggest the induction of apoptosis via suppression of PI3K/Akt/mTOR signaling and cell cycle arrest via activation of p53 in response to sanggenol L in prostate cancer cells.
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Cho HD, Kim JH, Won YS, Moon KD, Seo KI. Inhibitory Effects of Pectinase-Treated Prunus Mume Fruit Concentrate on Colorectal Cancer Proliferation and Angiogenesis of Endothelial Cells. J Food Sci 2019; 84:3284-3295. [PMID: 31618463 DOI: 10.1111/1750-3841.14824] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 08/23/2019] [Accepted: 08/28/2019] [Indexed: 01/04/2023]
Abstract
Pectinase is a well-known enzyme used in the food processing industry to produce fruit juice and concentrate. This study evaluated the anticancer and antiangiogenesis activities of pectinase-treated Prunus mume fruit concentrate (PC) and its phenolic components. PC treatment (250 to 1,000 µg/mL) resulted in decreased proliferation of SW480 human colorectal cancer cells through S-phase cell cycle arrest; however, equivalent concentrations of PC did not show toxicity toward CRL-1539 colon normal cells. Furthermore, PC-induced caspase-dependent apoptosis in SW480 cells, which was characterized by accumulation of apoptotic cell population, cell shrinkage, formation of apoptotic bodies, upregulation of proapoptotic Bax, cleaved PARP, caspase-3, caspase-8, and caspase-9, and downregulation of antiapoptotic Bcl-2. Antiangiogenesis effects of PC were assessed using human umbilical vein endothelial cells (HUVECs). We found that PC did not inhibit HUVECs proliferation at concentrations of 500 to 1,500 µg/mL. In addition, treatment with PC at nontoxic concentrations (500 to 1,000 µg/mL) blocked vascular endothelial growth factor induced cell migration, invasion, capillary-like tube formation, and angiogenesis from rat aortic rings. HPLC-PDA analysis showed that there were at least four different phenolics including 5-HMF, neochlorogenic acid, protocatechuic acid, and syringic acid. Taken together, these results indicated that PC could be used as a good source of phenolic compounds with selective anticancer and antiangiogenesis activities. PRACTICAL APPLICATION: Pectinases are one of the well-known enzyme used in the part of food processing. Treatment of pectinase is a useful strategy to reduce viscosity, turbidity, and pulp particles in the production of fruit juice, extract, and concentrate. In the present study, we found that pectinase-treated P. mume fruit concentrate significantly suppresses colorectal cancer proliferation and angiogenesis of human umbilical vein endothelial cells. The significance of our findings is that pectinase-treated P. mume concentrate may be used as a commercial functional food material to inhibit colorectal cancer and angiogenesis.
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Affiliation(s)
- Hyun-Dong Cho
- Dept. of Food Science and Biotechnology, Kyungpook National Univ., Daegu, 41566, Republic of Korea
| | - Jeong-Ho Kim
- Dept. of Food Science and Biotechnology, Kyungpook National Univ., Daegu, 41566, Republic of Korea
| | - Yeong-Seon Won
- Dept. of Biotechnology, Dong-A Univ., Busan, 49315, Republic of Korea
| | - Kwang-Deok Moon
- Dept. of Food Science and Biotechnology, Kyungpook National Univ., Daegu, 41566, Republic of Korea
| | - Kwon-Il Seo
- Dept. of Biotechnology, Dong-A Univ., Busan, 49315, Republic of Korea
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Won YS, Seo KI. Lupiwighteone induces caspase-dependent and -independent apoptosis on human breast cancer cells via inhibiting PI3K/Akt/mTOR pathway. Food Chem Toxicol 2019; 135:110863. [PMID: 31604113 DOI: 10.1016/j.fct.2019.110863] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 09/04/2019] [Accepted: 09/27/2019] [Indexed: 12/25/2022]
Abstract
Breast cancer is one of the most common causes of mortality in women. Lupiwighteone has anticancer effects in prostate cancer cells and neuroblastoma cells. However, the molecular and cellular mechanisms of lupiwighteone effects on human breast cancer cells are not as well known. In the present study, we investigated the effects of lupiwighteone on the proliferation and apoptosis of two different human cancer cells; MCF-7, an estrogen receptor (ER)-positive human breast cancer cell, and MDA-MB-231, a triple negative human breast cancer cell. Lupiwighteone treatment decreased the viability of MCF-7 and MDA-MB-231 cells. Lupiwighteone treatment resulted in apoptotic cell death in breast cancer cells, which was characterized by DNA fragmentation, accumulation of apoptotic cells, and nuclear condensation. We also showed that treatment with lupiwighteone induced caspase-dependent apoptosis (up-regulation of caspase-3, -7, -8, -9, PARP, and Bax or down-regulation of Bid, Bcl-2), induction of caspase-independent apoptosis (up-regulation of AIF and Endo G on cytosol), and inhibition of the PI3K/Akt/mTOR signaling pathway (down-regulation of PI3K, p-Akt, and p-mTOR) in both MCF-7 and MDA-MB-231 cells. These results suggest that lupiwighteone induces caspase-dependent and -independent apoptosis in both breast cancer cell lines via inhibiting PI3K/Akt/mTOR pathway.
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Affiliation(s)
- Yeong-Seon Won
- Department of Biotechnology, Dong-A University, Busan, 49315, Republic of Korea
| | - Kwon-Il Seo
- Department of Biotechnology, Dong-A University, Busan, 49315, Republic of Korea.
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Cho HD, Min HJ, Won YS, Ahn HY, Cho YS, Seo KI. Solid state fermentation process with Aspergillus kawachii enhances the cancer-suppressive potential of silkworm larva in hepatocellular carcinoma cells. BMC Complement Altern Med 2019; 19:241. [PMID: 31488109 PMCID: PMC6727413 DOI: 10.1186/s12906-019-2649-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Accepted: 08/21/2019] [Indexed: 12/14/2022]
Abstract
Background Mulberry silkworm larvae (Bombyx mori) are known as the oldest resource of food and traditional medicine. Although silkworm larvae have been reported to treat various chronic diseases, the effect of fermentation by microorganisms improving the biological activities of silkworm larvae was not reported. In the present study, fermented silkworm larvae was developed via solid-state fermentation with Aspergillus kawachii and investigated its anti-cancer activity in human hepatocellular carcinoma cells. Methods We investigated the anti-cancer effects of unfermented (SEE) and fermented silkworm larva ethanol extract (FSEE) on HepG2 human hepatocellular carcinoma cells as well as compared changes in free amino acid, fatty acid, and mineral contents. Anti-cancer activities were evaluated by SRB staining, cell cycle analysis, Annexin V staining, Hoechst staining, DNA fragmentation analysis and western blot analysis. Fatty acid, free amino acid and mineral contents of SEE and FSEE were determined by gas chromatography, amino acid analyzer and flame atomic absorption spectrophotometer, respectively. Results Compared with SEE, treatment with FSEE resulted in apoptotic cell death in HepG2 cells characterized by G0/G1 phase cell cycle arrest, DNA fragmentation, and formation of apoptotic bodies. Furthermore, FSEE significantly up-regulated pro-apoptotic as well as down-regulated anti-apoptotic proteins in HepG2 cells. However, an equivalent concentration of SEE did not induce cell cycle arrest or apoptosis in HepG2 cells. Moreover, fermentation process by Aspergillus kawachii resulted in enhancement of fatty acid contents in silkworm larvae, whereas amino acid and mineral contents were decreased. Conclusion Collectively, this study demonstrates that silkworm larvae solid state-fermented by Aspergillus kawachii strongly potentiates caspase-dependent and -independent apoptosis pathways in human hepatocellular carcinoma cells by regulating secondary metabolites. Electronic supplementary material The online version of this article (10.1186/s12906-019-2649-7) contains supplementary material, which is available to authorized users.
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Cho HD, Lee KW, Won YS, Shin DY, Seo KI. Studies on the Anti-Angiogenic Activities of Wild and Cultivated Orostachys japonicus Extracts in Human Umbilical Vein Endothelial Cells. J Food Sci 2019; 84:1764-1775. [PMID: 31218702 DOI: 10.1111/1750-3841.14675] [Citation(s) in RCA: 5] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 04/24/2019] [Accepted: 05/05/2019] [Indexed: 11/30/2022]
Abstract
Orostachys japonicus has traditionally been used as a food product and a fork medicine in Asia to treat various diseases. Angiogenesis is a critical process that contributes to various chronic diseases via excessive delivery of oxygen and nutrients. Common anti-angiogenic drugs have serious problems related to high costs and side effects; thus, natural products with low costs and no cytotoxicity have garnered increasing interest. In this study, we evaluated and compared the anti-angiogenic effects and phenolic compound contents between wild (WOEs) and cultivated O. japonicus extracts (COEs) prepared under various extract conditions. WOEs and COEs suppressed cell proliferation of human umbilical vein endothelial cells (HUVECs) and inhibited vascular endothelial growth factor-induced chemotactic migration, invasion, and capillary-like tube formation in HUVECs. Among COEs, that prepared by 70% EtOH (70% CE) showed the most effective anti-angiogenic activity in HUVECs. When compared to WOEs, total polyphenol and total flavonoid contents were 1.28 to 4.38 times higher in COEs, and 70% CE contained the greatest flavonoid contents (28.28 ± 0.93 mg%), as well as the highest levels of major phenolic compounds including gallic acid (21.84 µg/mL), epicatechin-gallate (6.58 µg/mL), kaempferol (6.32 µg/mL), and quercetin (8.55 µg/mL). Although further studies are required to identify the molecular mechanisms behind these anti-angiogenic effects, 70% CE could be used as an herbal medicine, functional food ingredient, and potent angiogenesis inhibitor. PRACTICAL APPLICATION: Environmental factors such as altitude, nutrients, exposure to sunlight, and temperature can influence the type and quantity of bioactive components in plants. The advantage of cultivated plants is that the above-mentioned factors can be artificially adjusted compared to wild plants. Based on economic efficiency, productivity, and consistent quality, anti-angiogenesis activity of cultivated O. japonicus is of greater commercial value as a functional food than wild O. japonicus.
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Affiliation(s)
- Hyun-Dong Cho
- Industry-Academy Cooperation, Dong-A Univ., Busan, 49315, Republic of Korea
| | - Kwan-Woo Lee
- Dept. of Biotechnology, Dong-A Univ., Busan, 49315, Republic of Korea
| | - Yeong-Seon Won
- Dept. of Biotechnology, Dong-A Univ., Busan, 49315, Republic of Korea
| | - Dong-Young Shin
- Dept. of Development in Oriental Medicine Resources, Sunchon Natl. Univ., Suncheon, 57922, Republic of Korea
| | - Kwon-Il Seo
- Dept. of Biotechnology, Dong-A Univ., Busan, 49315, Republic of Korea
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Cho HD, Gu IA, Won YS, Moon KD, Park KH, Seo KI. Auriculasin sensitizes primary prostate cancer cells to TRAIL-mediated apoptosis through up-regulation of the DR5-dependent pathway. Food Chem Toxicol 2019; 126:223-232. [PMID: 30817944 DOI: 10.1016/j.fct.2019.02.030] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 02/07/2019] [Accepted: 02/19/2019] [Indexed: 01/09/2023]
Abstract
Primary prostate cancer cells frequently develop resistance toward chemotherapy as well as most chemotherapeutics have been reported to induce undesirable cytotoxicity in normal cells. In this study, we performed sensitizing activity analysis of auriculasin (AC) to tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) in RC-58T/h/SA#4 primary prostate cancer cells without significant cytotoxicity in RWPE-1 prostate epithelial cells. Combined treatment with AC and TRAIL at optimal concentrations resulted in tumor-specific apoptotic cell death in RC-58T/h/SA#4 cells, characterized by DNA fragmentation, accumulation of apoptotic cell population, and nuclear condensation. Compared to single treatment with AC or TRAIL, co-treatment with AC and TRAIL significantly increased expression of Bax, cleaved PARP, AIF, endo G, and cytochrome c but decreased expression of phosphorylation of AKT and mammalian target of rapamycin (mTOR), phosphoinositide 3-kinase (PI3K), Bcl-2 and caspases-9, -8, -3, and -10. The sensitizing effect of AC to TRAIL was well correlated with inhibition of death receptor 5 (DR5) CHOP, and p53 expression. Moreover, pre-treatment with a chimeric blocking antibody for DR5 effectively reduced AC-TRAIL-induced cell death and apoptosis-related protein expression. These results suggest that non-toxic concentrations of AC sensitize TRAIL-resistant primary prostate cancer cells to TRAIL-mediated apoptosis via up-regulation of DR5 and downstream signaling pathways.
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Affiliation(s)
- Hyun-Dong Cho
- Department of Food Science and Technology, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - In-Ah Gu
- Department of Food Science, University of Arkansas, AR, 72704, USA
| | - Yeong-Seon Won
- Institute of Agriculture Life Science, Dong-A University, Busan, 49315, Republic of Korea
| | - Kwang-Deog Moon
- Department of Food Science and Technology, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Ki-Hun Park
- Division of Applied Life Science (BK21 plus), IALS, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Kwon-Il Seo
- Department of Biotechnology, Dong-A University, Busan, 49315, Republic of Korea.
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Choi SW, Nam KW, Chung J, Lee JC, Hwang CM, Won YS, Sun K, Min BG. Development of a New Pulsatile Extracorporeal Life Support Device Incorporating a Dual Pulsatile Blood Pump. Int J Artif Organs 2018; 29:583-90. [PMID: 16841287 DOI: 10.1177/039139880602900607] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [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: 11/17/2022]
Abstract
A new pulsatile extracorporeal life support device (ECLS) has been developed, designed to sustain pulsatile blood flow during emergency cardiopulmonary resuscitations and cardiopulmonary operations. This device features two identical pulsatile pumps that operate alternately and can therefore provide blood inflow in a more uniform manner than similar systems featuring a single-pump configuration. In order to confirm the presumed benefits of this newly-developed dual pulsatile pump configuration, we have conducted a series of in vitro experiments designed to compare the properties of the new system with a single pump system, specifically with regard to pump delivery rate and active filling efficiency. Our results reveal that the dual pump configuration can, indeed, deliver a higher flow than can the single-pump system, and exhibits an active filling efficiency superior to that of the single-pump configuration. We performed a series of animal experiments to measure the pulsatility of the dual-pump configuration in terms of equivalent energy pressure (EEP). In order to measure EEP, we measured femoral arterial pressure and pump outflow. The results of our animal experiments revealed that the newly-developed pulstile ECLS exhibits sufficient pulsatility in terms of the EEP considerations.
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Affiliation(s)
- S W Choi
- Interdisciplinary Program in Biomedical Engineering, Graduate School, Seoul National University, Jongro-gu, Seoul - Korea
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Won YS, Kumazoe M, Takamatsu K, Shinoda Y, Sonoda S, Okada K, Okamoto T, Tachibana H. Green tea cultivar 'Benifuuki' potentiates split vaccine-induced immunoglobulin A production. J Nat Med 2016; 71:68-75. [PMID: 27488865 DOI: 10.1007/s11418-016-1028-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Accepted: 07/15/2016] [Indexed: 01/13/2023]
Abstract
Influenza is a widespread disease caused by infection with the influenza virus. Vaccination is considered to be the main countermeasure against influenza. A split vaccine is widely used to avoid severe adverse events, and it induces strong humoral immunity. However, the split vaccine alone cannot elicit mucosal immunity, including IgA production, and its preventative effects are limited. Here, we show that the green tea cultivar 'Benifuuki' extract enhanced the effect of a split vaccine on mucosal immunity. The frequency of IgA+ cells was increased in lung and Peyer's patch that received Benifuuki diet. Secretion of hemagglutinin-specific mucosal IgA, which is closely linked to the prevention of viral infection, was significantly increased in the bronchoalveolar lavage fluid of split vaccine-immunized BALB/c mice that were administered green tea Benifuuki extract. Our findings suggest that Benifuuki intake enhanced the effects of the split vaccine on mucosal immunity.
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Affiliation(s)
- Yeong-Seon Won
- Division of Applied Biological Chemistry, Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka, 812-8581, Japan
| | - Motofumi Kumazoe
- Division of Applied Biological Chemistry, Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka, 812-8581, Japan
| | - Kanako Takamatsu
- Division of Applied Biological Chemistry, Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka, 812-8581, Japan
| | - Yuki Shinoda
- Products Research and Development Laboratory, Asahi Soft Drinks Co., Ltd., Ibaraki, 302-0106, Japan
| | - Saki Sonoda
- Products Research and Development Laboratory, Asahi Soft Drinks Co., Ltd., Ibaraki, 302-0106, Japan
| | - Kenji Okada
- Products Research and Development Laboratory, Asahi Soft Drinks Co., Ltd., Ibaraki, 302-0106, Japan
| | - Takehisa Okamoto
- Products Research and Development Laboratory, Asahi Soft Drinks Co., Ltd., Ibaraki, 302-0106, Japan
| | - Hirofumi Tachibana
- Division of Applied Biological Chemistry, Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka, 812-8581, Japan.
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Kim YH, Won YS, Yang X, Kumazoe M, Yamashita S, Hara A, Takagaki A, Goto K, Nanjo F, Tachibana H. Green Tea Catechin Metabolites Exert Immunoregulatory Effects on CD4(+) T Cell and Natural Killer Cell Activities. J Agric Food Chem 2016; 64:3591-3597. [PMID: 27112424 DOI: 10.1021/acs.jafc.6b01115] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Tea catechins, such as (-)-epigallocatechin-3-O-gallate (EGCG), have been shown to effectively enhance immune activity and prevent cancer, although the underlying mechanism is unclear. Green tea catechins are instead converted to catechin metabolites in the intestine. Here, we show that these green tea catechin metabolites enhance CD4(+) T cell activity as well as natural killer (NK) cell activity. Our data suggest that the absence of a 4'-hydroxyl on this phenyl group (B ring) is important for the effect on immune activity. In particular, 5-(3',5'-dihydroxyphenyl)-γ-valerolactone (EGC-M5), a major metabolite of EGCG, not only increased the activity of CD4(+) T cells but also enhanced the cytotoxic activity of NK cells in vivo. These data suggest that EGC-M5 might show immunostimulatory activity.
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Affiliation(s)
- Yoon Hee Kim
- Division of Applied Biological Chemistry, Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University , 6-10-1 Hakozaki, Higashi-ku, Fukuoka, Fukuoka 812-8581, Japan
- Department of Food and Nutrition, College of Engineering, Daegu University , Gyeongsan 712-714, Korea
| | - Yeong-Seon Won
- Division of Applied Biological Chemistry, Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University , 6-10-1 Hakozaki, Higashi-ku, Fukuoka, Fukuoka 812-8581, Japan
| | - Xue Yang
- Division of Applied Biological Chemistry, Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University , 6-10-1 Hakozaki, Higashi-ku, Fukuoka, Fukuoka 812-8581, Japan
| | - Motofumi Kumazoe
- Division of Applied Biological Chemistry, Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University , 6-10-1 Hakozaki, Higashi-ku, Fukuoka, Fukuoka 812-8581, Japan
| | - Shuya Yamashita
- Division of Applied Biological Chemistry, Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University , 6-10-1 Hakozaki, Higashi-ku, Fukuoka, Fukuoka 812-8581, Japan
| | - Aya Hara
- Food Research Laboratories, Mitsui Norin Company, Limited , 223-1 Miyabara, Fujieda-shi, Shizuoka 426-0133, Japan
| | - Akiko Takagaki
- Food Research Laboratories, Mitsui Norin Company, Limited , 223-1 Miyabara, Fujieda-shi, Shizuoka 426-0133, Japan
| | - Keiichi Goto
- Food Research Laboratories, Mitsui Norin Company, Limited , 223-1 Miyabara, Fujieda-shi, Shizuoka 426-0133, Japan
| | - Fumio Nanjo
- Food Research Laboratories, Mitsui Norin Company, Limited , 223-1 Miyabara, Fujieda-shi, Shizuoka 426-0133, Japan
| | - Hirofumi Tachibana
- Division of Applied Biological Chemistry, Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University , 6-10-1 Hakozaki, Higashi-ku, Fukuoka, Fukuoka 812-8581, Japan
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Yeol SG, Won YS, Kim YI, Lee JW, Choi YJ, Park DC. Decreased Bcl-6 and increased Blimp-1 in the peritoneal cavity of patients with endometriosis. CLIN EXP OBSTET GYN 2015; 42:156-160. [PMID: 26054109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
PURPOSE OF INVESTIGATION The authors investigated the expression patterns of interleukin (IL)-lβ and tumor necrosis factor (TNF)-α, cytokines associated with peritoneal inflammatory reactions, and of B cell leukemia lymphoma (Bcl)-6 and B lymphocyte inducer of maturation program (Blimp)-1, transcriptional factors associated with immunoglobulin (Ig) production; the concentrations of Igs, and their correlation, in patients with and without endometriosis. MATERIALS AND METHODS The authors analyzed the peritoneal fluid of 98 patients, 46 with endometriosis, and 52 with benign tumors. RESULTS IL-1 and TNF-α mRNAs and IgG and IgA concentrations were higher in the endometriosis group, but the differences were not statistically significant. However, Bcl-6 mRNA level was significantly lower and Blimp-1 mRNA level was significantly higher in the endometriosis group with significant correlations among transcriptional factors, Igs, and cytokines (p < 0.05). CONCLUSION Peritoneal immune responses in patients with endometriosis may be due to increased IgG and IgA concentrations, as well as to changes in expression of proinflammatory cytokines and transcriptional factors.
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Won YS, Lee JH, Kwon SJ, Kim JY, Park KH, Lee MK, Seo KI. α-Mangostin-induced apoptosis is mediated by estrogen receptor α in human breast cancer cells. Food Chem Toxicol 2014; 66:158-65. [DOI: 10.1016/j.fct.2014.01.040] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2013] [Revised: 01/20/2014] [Accepted: 01/22/2014] [Indexed: 12/13/2022]
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Kim JY, Jung EJ, Won YS, Lee JH, Shin DY, Seo KI. Cultivated Orostachys japonicus Induces Apoptosis in Human Colon Cancer Cells. ACTA ACUST UNITED AC 2012. [DOI: 10.9721/kjfst.2012.44.3.317] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Kim BM, Park SI, Kim DJ, Kim DI, Suh SH, Kwon TH, Choi HS, Won YS. Endovascular coil embolization of aneurysms with a branch incorporated into the sac. AJNR Am J Neuroradiol 2009; 31:145-51. [PMID: 19749218 DOI: 10.3174/ajnr.a1785] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Because of the concern for occlusion of the incorporated branch artery, an aneurysm with a branch incorporated into the sac has been regarded as a contraindication for coiling. The aim of this study is to evaluate the feasibility, techniques, and clinical and angiographic outcomes of coiling for aneurysms with a branch incorporated into the sac. MATERIALS AND METHODS The medical records and radiologic studies of 69 patients with 79 aneurysms having a branch incorporated into the sac (26 ruptured, 53 unruptured) were retrospectively reviewed and evaluated. RESULTS Coiling was accomplished in 78 aneurysms in 68 patients but was suspended in 1 due to incorporated branch occlusion. The aneurysms were treated by using the following techniques: single-catheter (n = 37), multicatheter (n = 22), balloon-remodeling (n = 7), stent-assisted coiling (n = 6), and combined (n = 7). Postembolization angiography revealed the following: near-complete occlusion in 71 (89.8%), remnant neck in 4 (5.1%), and incomplete occlusion in 4 (5.1%) aneurysms. Procedure-related permanent morbidity and mortality rates were 5.8% (4/69) and 0%, respectively. All patients with unruptured aneurysms had a modified Rankin Scale (mRS) score of 0, except for 1 patient who had an mRS score of 3. Of the 26 patients with ruptured aneurysms, 18 had favorable outcome (mRS 0-2) but 8 had poor outcome (mRS 3-6). Follow-up angiography was available at least once at 6-50 months (mean, 15 months) in 55 aneurysms (69.6%), of which 45 showed stable or improved occlusion; 4, minor recurrences; and 6, major recurrences. All 6 major recurrent aneurysms were retreated without complication by using a single-catheter (n = 1), multicatheter (n = 2), or balloon-assisted technique (n = 3). CONCLUSIONS With appropriate techniques, most aneurysms with a branch incorporated into the sac could be safely treated by coiling, with acceptable outcomes.
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Affiliation(s)
- B M Kim
- Department of Radiology, Yonsei University College of Medicine, Severance Hospital, Seoul, Korea.
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Park SI, Kim BM, Kim DI, Shin YS, Suh SH, Chung EC, Kim SY, Kim SH, Won YS. Clinical and angiographic follow-up of stent-only therapy for acute intracranial vertebrobasilar dissecting aneurysms. AJNR Am J Neuroradiol 2009; 30:1351-6. [PMID: 19342544 DOI: 10.3174/ajnr.a1561] [Citation(s) in RCA: 102] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Little has been known about the clinical and angiographic follow-up results of stent-only therapy for intracranial vertebrobasilar dissecting aneurysms (VBDA). The purpose of this study was to evaluate the feasibility, safety, clinical, and angiographic follow-up of stent-only therapy for VBDA. MATERIALS AND METHODS Twenty-seven patients with 29 VBDAs (11 ruptured, 18 unruptured), not suitable for deconstructive treatment, underwent stent-only therapy. Feasibility, safety, clinical, and angiographic follow-up were retrospectively evaluated. Angiographic outcomes were compared between single-stent and multiple-stent groups. RESULTS All attempted stent placements were successfully accomplished without any treatment-related complication. Of the 11 ruptured VBDAs, 4 were treated by single stents, 6 by double overlapping stents, and 1 by triple overlapping stents. Of the 18 unruptured VBDAs, 6 were treated by stents, and 12 by double overlapping stents. One patient with a ruptured VBDA, treated by single stent, had rebleeding and died. None of the remaining patients had posttreatment bleeding during follow-up (mean, 28 months; range, 7-50 months). Eight patients with ruptured VBDA and all patients with unruptured VBDA had excellent outcomes (modified Rankin Scale, 0-1). The remaining 2 patients with ruptured VBDA were moderately disabled because of the initial damage. Angiographic follow-up was available in 27 VBDAs, 4 to 42 months (mean, 12 months) after treatment. Follow-up angiograms revealed complete obliteration of the dissecting aneurysm in 12, partial obliteration in 12, stable in 1, enlargement in 1, and in-stent occlusion in 1. Angiographic improvement (complete or partial obliteration) was more frequent in the multiple-stent group (17/17) than in the single-stent group (7/9; P < .05). CONCLUSIONS In this small series, stent-only therapy was safe and effective in the treatment of VBDAs that were not deemed suitable for treatment with parent-artery occlusion.
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Affiliation(s)
- S I Park
- Department of Radiology, Soonchunhyang University College of Medicine, Bucheon Hospital, Bucheon, Korea
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Kim BM, Suh SH, Park SI, Shin YS, Chung EC, Lee MH, Kim EJ, Koh JS, Kang HS, Roh HG, Won YS, Chung PW, Kim YB, Suh BC. Management and clinical outcome of acute basilar artery dissection. AJNR Am J Neuroradiol 2008; 29:1937-41. [PMID: 18687744 DOI: 10.3174/ajnr.a1243] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND AND PURPOSE There have been inconsistencies on the prognosis and controversies as to the proper management of acute basilar artery dissection. The aim of this study was to evaluate acute basilar artery dissection and its outcome after management. MATERIALS AND METHODS A total of 21 patients (mean age, 53 years; range, 24-78 years) with acute basilar artery dissection were identified between January 2001 and October 2007. Clinical presentation, management, and outcomes were retrospectively evaluated. RESULTS The patients presented with subarachnoid hemorrhage (n = 10), brain stem ischemia (n = 10), or stem compression sign (n = 1). Ruptured basilar artery dissections were treated by stent placement with coiling (n = 4), single stent placement (n = 3), or conservatively (n = 3). Of the patients treated with endovascular technique, 6 had favorable outcome (modified Rankin scale [mRS], 0-2) and the remaining patient, who was treated by single stent placement, died from rebleeding. All 3 conservatively managed patients experienced rebleeding, of whom 2 died and the other was moderately disabled. Unruptured basilar artery dissections were treated conservatively (n = 7) or by stent placement (n = 4). Of the patients with unruptured basilar artery dissection, 9 had favorable outcome and the remaining 2 patients, both of whom were conservatively managed, had poor outcome because of infarct progression. The group with the ruptured basilar artery dissection revealed a higher mortality rate than the group with the unruptured dissection (30% vs 0%). The group treated with endovascular means revealed more favorable outcome than the group that was treated with conservative measures (90.9% vs 50%). CONCLUSION The ruptured basilar artery dissections were at high risk for rebleeding, resulting in a grave outcome. Stent placement with or without coiling may be considered to prevent rebleeding in ruptured basilar dissections and judiciously considered in unruptured dissections with signs of progressive brain stem ischemia.
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Affiliation(s)
- B M Kim
- Department of Radiology, Sungkyunkwan University School of Medicine, Kangbuk Samsung Hospital, Seoul, Korea
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Kim BM, Kim DI, Shin YS, Chung EC, Kim DJ, Suh SH, Kim SY, Park SI, Choi CS, Won YS. Clinical outcome and ischemic complication after treatment of anterior choroidal artery aneurysm: comparison between surgical clipping and endovascular coiling. AJNR Am J Neuroradiol 2007; 29:286-90. [PMID: 18024579 DOI: 10.3174/ajnr.a0806] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Although coiling has been favorably comparable with clipping for treatment of most intracranial aneurysms, there is a controversy on which modality is safer for anterior choroidal artery (AchoA) aneurysm. We retrospectively evaluated the clinical outcomes and treatment-related complications after surgical clipping and endovascular coiling of AchoA aneurysms. MATERIALS AND METHODS Seventy-three AchoA aneurysms were recruited from 1895 intracranial aneurysms, which were treated either by surgical clipping or by endovascular coiling in 4 institutions between May 1999 and December 2006. The AchoA aneurysms were dichotomized according to the modality of treatment, the coil group (37 patients; 38 aneurysms) and the clip group (35 patients; 35 aneurysms). Clinical outcomes and incidence of treatment-related complications between 2 groups and the factors influencing the clinical outcomes were evaluated. RESULTS There was no rebleeding in both groups during follow-up, for 4-72 months (mean, 27 months) in the coil group and for 3-84 months (mean, 34 months) in the clip group. In the coil group, 31 patients (83.8%) had favorable outcome (modified Rankin Scale score [mRS], 0-3). In the clip group, 31 patients (88.6%) had favorable outcome. The complication of coiling was transient contralateral hemiparesis in 2 patients, who recovered completely. The complications of clipping were permanent contralateral hemiparesis due to AchoA infarction in 4 patients and third-nerve palsy in 1 patient. Hunt and Hess grade 4 or 5 and AchoA infarction were significantly correlated with poor outcome (mRS, < or =4). Clipping had significantly higher incidence of AchoA infarction than coiling (P < .05). CONCLUSION Coiling of AchoA aneurysms appears comparable with clipping in clinical outcome and prevention of rebleeding, with significantly lower incidence of AchoA infarction than clipping.
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Affiliation(s)
- B M Kim
- Department of Radiology, Sungkyunkwan University School of Medicine, Kangbuk Samsung Hospital, Seoul, South Korea
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Min BG, Chung J, Nam KW, Rho YR, Lee JC, Lee JJ, Park JW, Choe SW, Park CY, Park SK, Son HS, Kim HK, Choi J, Hwang CM, Won YS, Sun K. Recent progress of moving-actuator type mechanical circulatory support systems: AnyHeart and T-PLS. Conf Proc IEEE Eng Med Biol Soc 2007; 2004:3765-8. [PMID: 17271114 DOI: 10.1109/iembs.2004.1404056] [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] [Indexed: 05/13/2023]
Abstract
The mechanical circulatory support system using moving-actuator mechanisms were developed by Seoul National University and Korea University. AnyHeart is a fully implanted pulsatile bi-ventricular assist device, and T-PLS is a pulsatile flow versatile extracorporeal life support system. Through lots of in-vitro and in-vivo experiments, the developed mechanical systems are faced to produce on commercial scale. This paper describes the recent progress of two mechanical circulatory support systems, AnyHeart and T-PLS.
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Affiliation(s)
- B G Min
- Department of Biomedical Engineering, College of Medicine, Seoul National University; Institute of Medical and Biological Engineering Medical Research Center, Seoul National University
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Rho YR, Choi H, Lee JC, Choi SW, Chung YM, Lee HS, Hwang CM, Lee HS, Ahn SS, Lee RY, Son HS, Choi MJ, Baek KJ, Kim JS, Suh GJ, Won YS, Sun K, Min BG. Applications of the pulsatile flow versatile ECLS: in vivo studies. Int J Artif Organs 2003; 26:428-35. [PMID: 12828310 DOI: 10.1177/039139880302600509] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [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: 11/16/2022]
Abstract
INTRODUCTION T-PLS (Twin-Pulse Life Support) is the first commercial pulsatile ECLS (Extra Corporeal Life Support) device (1). The dual sac structure of T-PLS can effectively reduce high membrane oxygenator inlet pressure and hemolysis. To verify both the use of T-PLS for ECLS and the advantages of T-PLS, we tested various models. METHOD AND RESULTS In the partial CPB (cardio pulmonary bypass) model (swine), T-PLS (N = 6), and Biopump (N = 2), a single pulsatile pump (N = 2), were compared. In the case of single pulsatile flow, during pump systole, pressure increased to 700 - 800 mmHg at the inlet port of the membrane oxygenator. fHb, a hemolysis measurement value, was about 80 mg/dL at 3 hours. On the contrary, because of T-PLS's dual sac system, the pressure of T-PLS had a maximum value of about 250 mmHg and fHb was similar to that of the commercial centrifugal pumps. In the total CPB model (bovine, N = 6), the heart was stopped via cardioplegia (Kcl). T-PLS flow was maintained at 3.0-4.5 L/min. T-PLS functioned like a natural heart, having a pulse pressure of 26-43 mmHg and a pulse rate of 40-60 bpm (beats per minute). In the emergency case model (canine, N = 6), T-PLS was started 10 minutes after cardiac arrest from electronic shock. In spite of cardiac arrest for a period of 40 minutes, the heart was recovered after defibrillation. In the ARDS (Acute Respiratory Distress Syndrome) model (canine, N = 6), minimal ventilator parameters were set: tidal volume 130 ml, respiration rate = bpm, FiO2 = 10%. Three hours after starting T-PLS, PO2 of the carotid artery blood (after 2 hours: 195 +/- 89.4; after 3 hours: 258 +/- 99.3 mmHg) was above half the value of the femoral artery but was within normal range. CONCLUSION It is suggested that a portable pulsatile ECLS like T-PLS may be used as a CPB device and as an alternative CPR (cardiopulmonary resuscitation) device in the case of cardiac arrest. Due to the pulsatile flow, oxygenated blood is delivered to the patient without overloading the ARDS patients heart.
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Affiliation(s)
- Y R Rho
- Interdisciplinary Program in Biomedical Engineering Major, Graduate School, Seoul National University, Seoul, Korea
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Min BG, Rho YR, Lee HS, Hwang CM, Choi SW, Lee JC, Choi H, Sun K, Son HS, Lee HS, Oh HJ, Ahn SS, Baek KJ, Won YS. T-PLS NEW PULSATILE BLOOD PUMP TECHNOLOGY FROM CARDIAC ARREST TO HEART RECOVERY. ASAIO J 2002. [DOI: 10.1097/00002480-200203000-00054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Gabr U, Won YS, Boonlayangoor S, Thompson K, Baroody FM, Naclerio RM. C57Bl/6 and BALB/c mice have similar neutrophil response to acute Streptococcus pneumoniae sinus infections. Arch Otolaryngol Head Neck Surg 2001; 127:985-90. [PMID: 11493211 DOI: 10.1001/archotol.127.8.985] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
BACKGROUND Previous investigations have shown that mice with a tendency toward a T(H)1 or T(H)2 lymphocyte response manifest different reactions to inoculation with the parasite Leishmania major. BALB/c mice (with a tendency for a T(H)2 response) showed evidence of systemic infection, whereas C57Bl/6 mice (with a tendency for a T(H)1 response) showed only a local reaction. OBJECTIVE To investigate whether BALB/c and C57Bl/6 mice respond differently to acute bacterial infection of the sinuses. METHODS We inoculated the nasal cavities of C57Bl/6 and BALB/c mice with Streptococcus pneumoniae (type ATCC59), or with broth as a control. The mice were humanely killed 2, 5, 10, and 14 days after inoculation. Their heads were fixed, decalcified, and embedded in paraffin blocks. Sections were stained with hematoxylin and eosin, and the degree of inflammation was quantified by the number of neutrophils per square millimeter of the sinus mucosa and the percentage of the sinus cavity occupied by neutrophil clusters. RESULTS Both groups of mice showed evidence of inflammation that was significantly greater than controls (P =.01), with no difference between groups. There was a correlation between the number of neutrophils per square millimeter in the sinus mucosa and the percentage of neutrophil clusters (C57Bl/6 mice, r = 0.37, P<.001; BALB/c mice, r = 0.20, P<.001). In the infected mice, the number of infiltrating neutrophils was significantly greater (P<.001) in anatomically lower (dependent) areas of the sinuses compared with the upper areas. CONCLUSION Unlike leishmaniasis, acute bacterial sinusitis is not affected by the tendency of the host to favor either a T(H)1 or T(H)2 response.
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Affiliation(s)
- U Gabr
- Section of Otolaryngology-Head and Neck Surgery, The University of Chicago, Chicago, IL 60637, USA
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Chang ED, Lee EH, Won YS, Kim JM, Suh KS, Kim BK. Malignant solitary fibrous tumor of the pleura causing recurrent hypoglycemia; immunohistochemical stain of insulin-like growth factor i receptor in three cases. J Korean Med Sci 2001; 16:220-4. [PMID: 11306751 PMCID: PMC3054728 DOI: 10.3346/jkms.2001.16.2.220] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
We present three cases of malignant solitary fibrous tumors of the pleura (SFTP) that produced recurrent hypoglycemia. Removal of the tumors produced normoglycemia. The tumors were well circumscribed and lobulated, and consisted of firm masses weighing 1,150 g to 1,450 g with the greatest diameter of 15 to 20 cm. The tumors were composed of spindle cells in fascicles or in a haphazard arrangement and were highly cellular and mitotically active (3-8 mitoses/10 high-power fields), showing histologically malignant features. Ultrastructurally, fibroblastic features of the tumor cells were present. Insulin-like growth factors (IGF) have been implicated in the presentation of hypoglycemia. The serum insulin and C-peptide levels were not elevated. Serum IGF-I levels were also low with values of 97.4, 157.1 and 51.9 ng/mL (ref. 125-317 ng/mL), respectively. However, tumor cells were strongly positive for IGF-I receptor on immunohistochemical analysis. It is tempting to speculate that IGF-I contributes to the hypoglycemia, even though the circulating levels were low.
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Affiliation(s)
- E D Chang
- Department of Clinical Pathology and Cardiothoracic Surgery, Catholic University of Korea, Seoul, Korea
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Jun KS, Hwang BG, Shin HS, Won YS. Chemical characteristics and leachability of organically contaminated heavy metal sludge solidified by silica fume and cement. Water Sci Technol 2001; 44:399-407. [PMID: 11548012] [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: 05/23/2023]
Abstract
This paper discusses the development of mixtures with silica fume as a stabilization/solidification agent and binder for industrial wastewater residue containing organic and heavy metal contaminants. The UCS (Unconfined Compressive Strength) gradually increased to 66.7% as the silica fume content increased to 15%. The leaching of TOC and chromium decreased as more OPC was substituted with silica fume. When the mix had 5% silica fume, it retained about 85% TOC, and chromium leached out 0.76 mg-Cr/g-Cr in acidic solution. Also, microstructural studies on the solidified wastes through the scanning electron microscopy/energy dispersive spectroscopy (SEM/EDS) and X-ray diffraction analysis showed that the silica fume caused an inhibition to the ettringite formation which did not contribute to setting, but coated the cement particles and retarded the setting reactions. The results indicated that the incorporation of silica fume into the cement matrix minimized the detrimental effects of organic materials on the cement hydration reaction and contaminant leachability.
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Affiliation(s)
- K S Jun
- Department of Environmental Engineering, Yeungnam University, Kyungbuk, Korea
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Won YS, Brichta A, Baroody F, Boonlayangoor S, Naclerio R. Bactrim reduces the inflammatory response in a murine model of acute rhinosinusitis. Rhinology 2000; 38:68-71. [PMID: 10953844] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
OBJECTIVE To determine whether treatment with an antibiotic (trimethoprim-sulfamethoxazole) reduced the inflammatory response in a murine form of Streptococcus pneumoniae-induced rhinosinusitis. DESIGN We randomized 18 C57BL/6 mice to either treatment with intraperitoneal trimethoprim-sulfamethoxazole (Bactrim, 30 mg/kg) or no treatment (control). After 2 days, we inoculated all C57BL/6 mice intranasally with a Bactrim-susceptible strain of Streptococcus pneumoniae, ATCC 49619, suspended in Trypticase soy broth. At day 5 after bacterial inoculation, we sacrificed the mice and prepared histopathologic sections of their sinuses after culturing their nasal cavities by lavage. SETTING Animal care facility at a tertiary, academic institution. METHODS The histopathologic sections of the sinuses were examined in a blind manner for the percent of sinus cavity area occupied by neutrophil clusters, and for the number of neutrophils per square millimeter of sinus mucosa. RESULTS The Bactrim group had a significantly smaller sinus area occupied by neutrophil clusters (1.58% +/- 1.13 vs 4.38% +/- 3.41; P < 0.05), significantly fewer neutrophils infiltrating the mucosa (58.81 +/- 29.63/mm2 vs 105.85 +/- 48.49/mm2; P < 0.05), and significantly less growth of Streptococcus pneumoniae colonies in the intranasal cultures (8 few and 1 moderate vs 3 few, 3 moderate, and 1 many; P = 0.05) compared to the control group. CONCLUSION In our murine model of acute rhinosinusitis, Bactrim decreased the number of neutrophil clusters in the sinus cavities, the number of neutrophils infiltrating the sinus mucosa, and the growth of Streptococcus pneumoniae. We propose that our murine model can be used for the study of the pathophysiology and treatment of acute rhinosinusitis.
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Affiliation(s)
- Y S Won
- Section of Otolaryngology-Head and Neck Surgery, University of Chicago, Illinois, USA
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Affiliation(s)
- S H Lee
- Department of Radiology, St. Vincent's Hospital, The Catholic University of Korea, Kyunggido, South Korea
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Cho JH, Kwun YS, Jang HS, Kang JM, Won YS, Yoon HR. Long-term use of preservatives on rat nasal respiratory mucosa: effects of benzalkonium chloride and potassium sorbate. Laryngoscope 2000; 110:312-7. [PMID: 10680936 DOI: 10.1097/00005537-200002010-00025] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVES The preservatives benzalkonium chloride (BZC) and potassium sorbate (PS) are widely used, not only for nasal drops, but also for eyedrops and cosmetics. However, there have been many case reports that consider lesions such as dermatitis or conjunctivitis to be the results of irritation induced by BZC or PS. METHODS We evaluated the histological changes after the long-term administration of BZC or PS on rat nasal respiratory mucosa. Forty rats were used for the BZC group and 40 rats for PS group. Animals in each group were divided into four subgroups The first subgroup received a low-concentration preservative solution that was commonly used for nasal sprays. The second subgroup received a high-concentration preservative solution that was reported to induce dermatitis in humans. The third and fourth subgroups received a steroid mixed preservative solution of low and high concentrations, respectively. The control group was administrated normal saline. After each group received 1, 2, and 4 weeks of topical administration, the symptomatic and histological changes on H&E stain were observed. RESULTS Sneezing and nasal rubbing with forelegs were observed in almost all subgroups by the seventh day of treatment. The preservatives induced nasal lesions, including intraepithelial glandular formation, inflammatory cell infiltration, vascular hyperplasia, and edematous change. The symptomatic and histological changes were pronounced with the prolonged duration of administration. Similar results were observed in the steroid mixed-solution groups. In the PS steroid mixed-solution group, however, symptoms and nasal lesions were reduced with the prolonged duration of administration. CONCLUSION It is our finding that even a low-concentration solution of preservative can lead to nasal lesion. Hence there is a strong need to develop both a preservative that can be safely and widely used and a nasal spray without preservatives.
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Affiliation(s)
- J H Cho
- Department of Otolaryngology-Head and Neck Surgery, College of Medicine, The Catholic University of Korea, Seoul
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Park SP, Kim EY, Kim DI, Park NH, Won YS, Yoon SH, Chung KS, Lim JH. Simple, efficient and successful vitrification of bovine blastocysts using electron microscope grids. Hum Reprod 1999; 14:2838-43. [PMID: 10548633 DOI: 10.1093/humrep/14.11.2838] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.5] [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: 11/14/2022] Open
Abstract
This study demonstrates that higher survival of vitrified-thawed bovine blastocysts can be obtained using electron microscope (EM) grids as embryo containers at freezing, rather than plastic straws. In-vitro produced day 7 bovine blastocysts after in-vitro fertilization (IVF) were vitrified on grids or in straws with EFS40 freezing solution and their survival after thawing was compared. Embryo survival was assessed as re-expanded and hatched rates at 24 and 48 h after thawing respectively. When the effects of exposure to vitrification solution and chilling injury from the freezing procedure were examined, embryo survival in the exposure group (24 h: 100, 48 h: 73.3%) was not different compared with that in the control group (100, 84.4%). After vitrification, the hatched rate of the EM grid group 48 h after thawing (67.8%) was significantly higher than that of the straw group (53.3%) (P < 0.05). Fast developing embryos (expanded blastocyst and early hatching blastocyst stage) showed better resistance to freezing than delayed ones (early blastocyst stage), irrespective of embryo containers (early: 24 h, 57.1 and 48 h, 24.4%; expanded: 84.7 and 60.6%; early hatching: 91.7 and 80.0%) (P < 0.001). When using expanded and early hatching blastocysts, embryo survival rates in the vitrification-EM grid group (67.8, 95.0% respectively) were significantly higher than that of the vitrification-straw group (53.0, 65.0%) at 48 h.
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Affiliation(s)
- S P Park
- Maria Infertility Medical Institute, 103-11 Sinseol-dong Dongdaemun-Gu, Seoul, Korea
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Abstract
Adenoid hypertrophy is known as the most common cause of nasal obstruction in children; thus, adenoidectomy with, or without, tonsillectomy is one of the most commonly performed surgical procedures in the paediatric population. Although many methods have been suggested, few studies have reported on how to assess adenoid size, pre-operatively. Acoustic rhinometry is an objective technique as well as a non-invasive method, which can be easily used in young children. This study confirmed that acoustic rhinometry is a non-invasive and objective technique for assessing the geometry of the nasal cavity and nasopharynx. Forty children were evaluated using symptomology, two different radiological measurements and acoustic rhinometry; the results were compared with endoscopic findings. Clinical symptoms and A/N ratio measured with Fujioka's method significantly correlated with the endoscopic assessment findings (r = 0.769 and 0.604 respectively). Significant increases in the cross-sectional area and volume of the nasopharynx were observed at the adenoid notch after adenoidectomy (p < 0.005 and p < 0.005, respectively). Acoustic rhinometry showed a high degree of correlation of which adenoid occupied the nasopharyngeal airway under endoscopic examination (r = 0.771). Thus, the study concluded that acoustic rhinometry can be as good an objective method for measuring adenoid sizes as endoscopy and can be used as one of the pre-operative examination tools for adenoidectomy.
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Affiliation(s)
- J H Cho
- Department of Otolaryngology-Head and Neck Surgery, College of Medicine, Catholic University of Korea, Seoul, Korea.
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Choi YK, Choi JY, Jeon HS, Won YS, Lee CH, Yoon WK, Oh GT, Hyun BH. Spontaneous low-virulence mouse hepatitis virus infection in severe combined immunodeficiency mice. Lab Anim Sci 1999; 49:324-7. [PMID: 10403451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
MESH Headings
- Animals
- Antigens, Viral/analysis
- Coronavirus Infections/blood
- Coronavirus Infections/pathology
- Glomerulosclerosis, Focal Segmental/blood
- Glomerulosclerosis, Focal Segmental/genetics
- Glomerulosclerosis, Focal Segmental/pathology
- Glomerulosclerosis, Focal Segmental/virology
- Hepatitis, Viral, Animal/blood
- Hepatitis, Viral, Animal/pathology
- Immunoenzyme Techniques
- Liver/pathology
- Liver/virology
- Mice
- Mice, SCID/virology
- Murine hepatitis virus/isolation & purification
- Murine hepatitis virus/pathogenicity
- Severe Combined Immunodeficiency/virology
- Species Specificity
- Specific Pathogen-Free Organisms
- Virulence
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Affiliation(s)
- Y K Choi
- ICLAS Monitoring Subcenter Korea, Korea Research Institute of Bioscience and Biotechnology, Taejon
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Kim WG, Choi JS, Won YS, Jo YH, Park SK, Chung CI, Kim J, Min BG, Ahn H, Rho JR. In vivo experiment leading to clinical application of an electrohydraulic ventricular assist device with magnetic coupling. ASAIO J 1999; 45:215-7. [PMID: 10360726 DOI: 10.1097/00002480-199905000-00021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
We developed an electrohydraulic ventricular assist device with magnetic coupling. The integrated system consists of a blood pump, a water conduit for pressure transmission, a bellows type pumping sac, an actuator for transforming the circular motion of a motor to the linear motion of a pusher plate attached to the pumping sac with magnetic coupling, and a controller. The purpose of the coupling was to prevent excessive sucking against the atrial wall. Number 21 Medtronic Hall (Irvine, CA) mechanical valves were used in the inflow and outflow ports of the blood pump. Maximum dynamic stroke volume was 48 ml, and against a mean afterload of 100 mm Hg, maximum pump output was 7 L/min. Chronic in vivo experiments were performed in three sheep, and during these evaluations the system showed no noticeable problems related to mechanical or electronic devices. When left atrial pressure decreased below 0 mm Hg, the magnetic coupling system decoupled the pumping sac and pusher plate with satisfactory reliability. The device was clinically applied in a postoperative patient with chronic dilating cardiomyopathy, and no significant device related problems ensued. These results prove that the electrohydraulic ventricular assist system with magnetic coupling is a suitable ventricular assist device.
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Affiliation(s)
- W G Kim
- Department of Thoracic and Cardiovascular Surgery, Seoul National University College of Medicine, Korea
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Abstract
Electrostatic interactions are computed for three-dimensional regular arrays of spheres. Tetrahedral array of four spheres, octahedral array of six spheres, cubic array of eight spheres, and periodic arrays of spheres in body-centered cubic (BCC) and face-centered cubic (FCC) structures are considered. Based on the linearized Poisson-Boltzmann equation the electrostatic free energy is computed for both constant surface potential and constant surface charge conditions. Facilitating the complex geometry of the problem, the boundary element method is used. Test results for two-sphere interactions are in excellent agreement with existing exact solutions even at very small Debye length. The results for multisphere interactions are compared with those obtained by the pairwise additivity approximation. For BCC and FCC arrays comparison is made to the results from the pairwise additivity approximation and from the spherical cell model. At small Debye length the pairwise additivity approximation predicts the interactions reasonably well. At large Debye length, however, the cell model furnishes much better estimates. In addition, the electrostatic free energy difference between BCC and FCC structures at given particle concentration is found to be too small to assess any physical significance. Copyright 1998 Academic Press.
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Affiliation(s)
- GW Kwon
- Department of Chemical Engineering, Pohang University of Science and Technology, Pohang, 790-784, Korea
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Abstract
Adequate intrathoracic anatomical compatibility is one of the most important considerations in designing a fully implantable total artificial heart (TAH). We have recently developed an innovative concept of reverse positioning of the aortic and pulmonary conduits to facilitate anatomical compatibility of the moving actuator type TAH. The pulmonary conduit of this TAH is designed to be located posterior to the aortic conduit, which results in a substantial reduction in the anteroposterior diameter of this heart, as well as the virtual elimination of the compression of the low pressure pulmonary conduit. In ovine orthotopic implantation experiments with this model of the TAH, we consecutively achieved 3 day survival in 1 sheep and 2 day survival in another. To the best of our knowledge, these were the first significant short-term survival cases in the orthotopic implantation of electric TAHs in sheep.
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Affiliation(s)
- W G Kim
- Department of Thoracic and Cardiovascular Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Yungeun-Dong, Korea
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Abstract
BACKGROUND Although management of spontaneous pneumothorax by video-assisted thoracic surgery (VATS) has generally shown superior clinical results to thoracotomy, management of spontaneous pneumothorax by transaxillary minithoracotomy (TAMT) has also shown good clinical results. The objective of this study was to compare the clinical results of VATS and TAMT in treating spontaneous pneumothorax. METHODS Sixty-six patients, aged 13 to 81 years, with recurrent, persistent or contralateral spontaneous pneumothorax were involved in this study. Thirty-six patients were treated by VATS and 30 by TAMT. The operating time, the amount of analgesics used on the first postoperative day, the duration of the indwelling chest tube, and the number of recurrences after operation were compared. The follow-up periods of both procedures were from 6 to 24 months. RESULTS Of the 66 patients, 64 were male and 2 were female. The duration of operation, from start of skin incision to insertion of chest tube, was 91.2 +/- 36.8 minutes in VATS and 86.3 +/- 40.9 minutes in TAMT (p = 0.6061). The amount of analgesics (keptoprofen) used was 1.9 +/- 2.3 ampules in VATS and 2.1 +/- 2.9 ampules in TAMT (p = 0.0883). The duration of indwelling chest tube was 5.0 +/- 4.0 days in VATS and 4.3 +/- 2.1 days in TAMT (p = 0.3707). The number of recurrences after operation was 4 in VATS and none in TAMT. CONCLUSIONS There were no advantages of VATS over TAMT for management of recurrent, persistent, or contralateral spontaneous pneumothorax in regard to the operating time, the amount of analgesics used on the first postoperative day, the duration of the indwelling chest tube, and the number of postoperative recurrences in patients with apical bullae.
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Affiliation(s)
- K H Kim
- Department of Thoracic and Cardiovascular Surgery, Ewha Womans University, Mokdong, Seoul, Republic of Korea
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