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Seo SY, Park YH, Jung SK, Kim J. Acute Toxicity Evaluation of the Disinfectant Containing Percarbonate and Tetraacetylethylenediamine by Measuring Behavioral Responses of Small Fish Using Image Analysis. BIOTECHNOL BIOPROC E 2022; 27:687-696. [PMID: 35730032 PMCID: PMC9188641 DOI: 10.1007/s12257-021-0419-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 02/23/2022] [Accepted: 03/04/2022] [Indexed: 11/30/2022]
Abstract
Disinfectants containing percarbonate and tetraacetylethylenediamine (TAED) has been developed as an effective and relatively safe disinfectant to destroy viruses and bacteria in animals and humans, however it is known that most disinfectants can cause danger to living organisms including humans. In the current study, acute toxicity of the disinfectant composed of percarbonate and TAED was assessed by measuring behavioral responses as well as lethal concentrations of aquatic organisms such as medaka and zebrafish when they were exposed to it. First, the breeding water properties were determined by measuring dissolved oxygen (DO) and pH changes over time up to 96 h in acute toxicity tests using the medaka, and the lethal concentration 50% (LC50, 88.39 ppm) was calculated using the lethality rate of the fish. This experiment was conducted in compliance with traditional OECD guidelines. Second, the assessment of behavioral responses (locomotive activity and swimming speed) with the zebrafish were assessed by the image analysis to capture the images per second for three hours, and the collected data were processed using image analysis to calculate the locomotive activity and swimming speed. Finally, the LC50 (135.76 ppm) of the disinfectant to the fish was also measured after three hours. Overall, the data revealed that LC50 of the disinfectant may be affected by the pH of the water exposed to the disinfectant, not by the DO in the water. In addition, the results from the image analysis indicated that the behavioral responses of the fish can further assess the acute toxicity of the disinfectant at concentrations below the LC50 and there was a relationship (R2 = 0.85) between the behavioral responses and the survival rate of the fish.
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Affiliation(s)
- Seung-Yoon Seo
- Department of Biological & Chemical Engineering, Hongik University, Sejong, 30016 Korea
| | - Yeon-Ho Park
- Department of Biological & Chemical Engineering, Hongik University, Sejong, 30016 Korea
| | - Sang-Kyu Jung
- Department of Biological & Chemical Engineering, Hongik University, Sejong, 30016 Korea
| | - Jinku Kim
- Department of Biological & Chemical Engineering, Hongik University, Sejong, 30016 Korea
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Ramu AG, Salla S, Chandrasekaran S, Silambarasan P, Gopi S, Seo SY, Yun K, Choi D. A facile synthesis of metal ferrites and their catalytic removal of toxic nitro-organic pollutants. Environ Pollut 2021; 270:116063. [PMID: 33213948 DOI: 10.1016/j.envpol.2020.116063] [Citation(s) in RCA: 18] [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] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 10/28/2020] [Accepted: 11/08/2020] [Indexed: 06/11/2023]
Abstract
Nitrocompounds are the major prime water contaminants. In this investigative study, toxic nitrocompounds (4-nitrophenol, 2,4-dinitrophenol, 2,4,6-trinitrophenol) were removed by using magnetic CuFe2O4, CoFe2O4, and NiFe2O4 material systems. The metal ferrites were synthesized through hydrothermal method and also followed with calcination process. The properties of metal ferrites were confirmed through using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and field emission scanning electron microscopy (FE-SEM) studies and results there on were presented. For the first time, the synthesized CuFe2O4, CoFe2O4, and NiFe2O4 material systems were used for the reduction of 4-nitrophenol (NP), 2,4-dinitrophenol (DNP), and 2,4,6-trinitrophenol (TNP) in aqueous medium. The UV-visible spectrometry was employed to monitor the removal of nitro compounds and formation of aminophenol. Among, the three catalysts, the CuFe2O4 displayed excellent removal activity for nitrocompounds. The CuFe2O4 nanoparticles completely removed the NP, DNP and TNP within 2, 5, 10 min, respectively. The NP reduction reaction follows the pseudo-first-order kinetics. Further, the investigated and proposed CuFe2O4, catalyst has given and demonstrated excellent kinetic rate constants 0.990, 0.317, 0.184 min-1 for 4-NP, DNP and TNP respectively, which was very fast kinetic than the already published reports. Also, the aminophenol formation was confirmed for the above mentioned and select nitrocompounds. The obtained results confirm suggest that CuFe2O4 nanoparticles based material system could be one of the promising catalysts for nitro compounds removal process.
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Affiliation(s)
- A G Ramu
- Department of Materials Science and Engineering, Hongik University, 2639-Sejong- ro, Jochiwon- eup, Sejong-city, 30016, Republic of Korea
| | - Sunitha Salla
- Department of Chemistry, Sathyabama Institute of Science and Technology (Deemed to be University), Chennai, 600119, India
| | - Sivaraman Chandrasekaran
- Center of Excellence in Environmental Studies, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - P Silambarasan
- Department of Chemical Engineering, Sunchon University, Jolanamdo, 540-950, Republic of Korea
| | - S Gopi
- Department of BioNano Technology, Gachon University, Seongnam, 13120, Republic of Korea
| | - Seung-Yoon Seo
- Department of Bio. & Chemical Engineering, Hongik University, 2639-Sejong- ro, Jochiwon-eup, Sejong-city, 30016, Republic of Korea
| | - Kyusik Yun
- Department of BioNano Technology, Gachon University, Seongnam, 13120, Republic of Korea
| | - Dongjin Choi
- Department of Materials Science and Engineering, Hongik University, 2639-Sejong- ro, Jochiwon- eup, Sejong-city, 30016, Republic of Korea.
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Hassan M, Azhar M, Abbas Q, Raza H, Moustafa AA, Shahzadi S, Ashraf Z, Seo SY. Finding Novel Anti-carcinomas Compounds by Targeting SFRP4 Through Molecular Modeling, Docking and Dynamic Simulation Studies. Curr Comput Aided Drug Des 2018; 14:160-173. [PMID: 29332600 DOI: 10.2174/1573409914666180112100122] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Revised: 11/02/2017] [Accepted: 01/01/2018] [Indexed: 11/22/2022]
Abstract
BACKGROUND Secreted Frizzled-Related Protein 4 (SFRP4) is a glycoprotein that acts as a competitor of both canonical and non-canonical Wnt pathways. SFRP4 is mostly expressed in ovary and plays a significant role as a target molecule to cure ovarian carcinoma. OBJECTIVE Multiple chemical agonists are being used to cure ovary melanoma. We are interested in theoretically analyzing the compounds through computational approaches for their potential inhibitory effects against SFRP4. METHODS Compounds were sketched in Chemsketch drawing tool and minimized through chimera tool. Because the crystal structure of SFRP4 is not available in Protein Data Bank, homology modeling approach was used to predict Three-Dimensional (3D) crystal structure of SFRP4. Moreover, multiple computational approaches such as molecular docking and Molecular Dynamic (MD) simulations along with various online tools were employed to screen the best inhibitor against ovary melanoma. RESULTS The docking results showed that 1d and 1e compounds revealed significant binding energy values (-9.10 and -9.00 kcal/mol, respectively) compared with the standard drugs such as cis-platin and docetaxel (-3.30, -10.80 kcal/mol), respectively. Moreover, MD simulation results showed that 1d has little fluctuations throughout the simulation period as depicted by the root mean square deviation and root mean square fluctuation graphs. CONCLUSION The present in-silico study provides a deeper insight into the structural attributes of 1d compound and its overall molecular interactions against SFRP4 and gives a hypothetical gateway to use this compound as a potential inhibitor against ovarian carcinoma.
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Affiliation(s)
- M Hassan
- Department of Biological Sciences, College of Natural Sciences, Kongju National University, Gongju 32588, Korea
| | - M Azhar
- Comsats Institute of Information and Technology, Sahiwal, Pakistan.,CAS Key Laboratory of Brain Function and Disease, CAS Center of Excellence in Molecular Science, School of Life Science, University of Science and Technology of Hefei, Hefei, China
| | - Q Abbas
- Department of Physiology, University of Sindh, Jamshoro 76080, Pakistan
| | - H Raza
- Department of Biological Sciences, College of Natural Sciences, Kongju National University, Gongju 32588, Korea
| | - A A Moustafa
- School of Social Sciences and Psychology and MARCS Institute for Brain and Behaviour, Westren Sydney University, Sydney, New South Wales, Australia
| | - S Shahzadi
- Institute of Molecular Science and Bioinformatics, Department of Bioinformatics, Virtual University, 1-Davis Road, Lahore, 54000, Pakistan
| | - Z Ashraf
- Department of Chemistry, Allama Iqbal Open University, Islamabad 44000, Pakistan
| | - S Y Seo
- Department of Biological Sciences, College of Natural Sciences, Kongju National University, Gongju 32588, Korea
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Seo M, Joo S, Jung KW, Lee J, Lee HJ, Soh JS, Yoon IJ, Koo HS, Seo SY, Kim D, Hwang SW, Park SH, Yang DH, Ye BD, Byeon JS, Jung HY, Yang SK, Rao SS, Myung SJ. A high-resolution anorectal manometry parameter based on integrated pressurized volume: A study based on 204 male patients with constipation and 26 controls. Neurogastroenterol Motil 2018; 30:e13376. [PMID: 29797379 DOI: 10.1111/nmo.13376] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Accepted: 04/12/2018] [Indexed: 12/12/2022]
Abstract
BACKGROUND Conventional anorectal manometric parameters based on linear waves cannot properly predict balloon expulsion (BE) time. We aimed to determine the correlation between integrated pressurized volume (IPV) parameters during simulated evacuation (SE) and BE time in healthy individuals and constipated patients and to assess the correlation between each parameter and symptoms. METHODS A total of 230 male participants (including 26 healthy volunteers and 204 chronically constipated patients) underwent high-resolution anorectal manometry (HRAM) and BE tests. The IPV was calculated by multiplying the amplitude, distance, and time from the HRAM profile. Receiver operating characteristic curve (ROC) analysis and partial least square regression (PLSR) were performed. KEY RESULTS ROC analysis indicated that the IPV ratio between the upper 1 cm and lower 4 cm of the anal canal was more effective for predicting BE time (area under the curve [AUC]: 0.74, 95% confidence interval [CI]: 0.67-0.80, P < .01) than the conventional anorectal parameters, including defecation index and rectoanal gradient (AUC: 0.60, 95% CI: 0.52-0.67, P = .01). PLSR analysis of a linear combination of IPV parameters yielded an AUC of 0.79. Moreover, the IPV ratio showed a greater clinical correlation with patient symptoms than conventional parameters. CONCLUSIONS AND INFERENCES The IPV parameters and the combination of IPV parameters via PLSR were more significantly correlated with BE time than the conventional parameters. Thus, this study presents a useful diagnostic tool for the evaluation of pathophysiologic abnormalities in dyssynergic defecation using IPV and BE time.
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Affiliation(s)
- M Seo
- Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - S Joo
- Department of Biomedical Engineering, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - K W Jung
- Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - J Lee
- Department of Clinical Epidemiology and Biostatistics, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - H J Lee
- Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.,Health Screening and Promotion Center, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - J S Soh
- Department of Internal Medicine, University of Hallym College of Medicine, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - I J Yoon
- Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - H S Koo
- Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - S Y Seo
- Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - D Kim
- Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - S W Hwang
- Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - S H Park
- Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - D-H Yang
- Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - B D Ye
- Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - J-S Byeon
- Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - H-Y Jung
- Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - S-K Yang
- Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - S S Rao
- Department of Medicine, Division of Gastroenterology and Hepatology, Augusta University, Augusta, GA, USA
| | - S-J Myung
- Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
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Park YR, Kim SL, Lee MR, Seo SY, Lee JH, Kim SH, Kim IH, Lee SO, Lee ST, Kim SW. MicroRNA-30a-5p (miR-30a) regulates cell motility and EMT by directly targeting oncogenic TM4SF1 in colorectal cancer. J Cancer Res Clin Oncol 2017; 143:1915-1927. [PMID: 28528497 DOI: 10.1007/s00432-017-2440-4] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Accepted: 05/12/2017] [Indexed: 12/27/2022]
Abstract
PURPOSE Colorectal cancer (CRC) is one of the leading causes of cancer death worldwide, and many oncogenes and tumor suppressor genes are involved in CRC. MicroRNAs (miRNAs) are small non-coding RNAs that can negatively regulate gene expression. Previous studies have revealed that miRNAs regulate the development and progression of many cancers. In this study, we investigated the role of microRNA-30a-5p (miR-30a) in CRC and its unknown mechanisms. METHODS qRT-PCR was used to detect miR-30a and TM4SF1 mRNA expression in CRC specimens and cell lines. CRC cell migration and invasion were assessed after transfection with miR-30a or TM4SF1 using wound healing and trans-well migration and invasion assays. Transmembrane-4-L-six-family protein (TM4SF1) was validated as a target of miR-30a in CRC through luciferase reporter assay and bioinformatics algorithms. Moreover, two EMT regulators, E-cadherin and VEGF, were also identified using Western blotting and immunohistochemistry. RESULTS We found that miR-30a was down-regulated in CRC tumor tissues and cell lines, and miR-30a was inversely associated with advanced stage and lymph node metastatic status compared with normal tissues. miR-30a decreased migration and invasion in CRC cell lines, and miR-30a overexpression not only down-regulated TM4SF1 mRNA and protein expression, but also inhibited the expression of VEGF and enhanced expression of E-cadherin. We also showed that TM4SF1 was up-regulated in CRC tumor specimens compared with adjacent normal tissues, and TM4SF1 expression was significantly associated with advanced stage and lymph node status compared with adjacent normal tissues. CONCLUSIONS These results suggest that miR-30a is an important regulator of TM4SF1, VEGF, and E-cadherin for CRC lymph node metastasis, a potential new therapeutic target in CRC.
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Affiliation(s)
- Y R Park
- Department of Internal Medicine, Chonbuk National University Hospital, Chonbuk National University Medical School, Jeonju, Republic of Korea
- Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute, Chonbuk National University Hospital, Chonbuk National University Medical School, 20 Geonji-ro, Deokjin-gu, Jeonju, Jeonbuk, 54896, Republic of Korea
| | - S L Kim
- Department of Internal Medicine, Chonbuk National University Hospital, Chonbuk National University Medical School, Jeonju, Republic of Korea
- Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute, Chonbuk National University Hospital, Chonbuk National University Medical School, 20 Geonji-ro, Deokjin-gu, Jeonju, Jeonbuk, 54896, Republic of Korea
| | - M R Lee
- Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute, Chonbuk National University Hospital, Chonbuk National University Medical School, 20 Geonji-ro, Deokjin-gu, Jeonju, Jeonbuk, 54896, Republic of Korea
- Department of Surgery, Chonbuk National University Hospital, Chonbuk National University Medical School, Jeonju, Republic of Korea
| | - S Y Seo
- Department of Internal Medicine, Chonbuk National University Hospital, Chonbuk National University Medical School, Jeonju, Republic of Korea
- Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute, Chonbuk National University Hospital, Chonbuk National University Medical School, 20 Geonji-ro, Deokjin-gu, Jeonju, Jeonbuk, 54896, Republic of Korea
| | - J H Lee
- Department of Preventive Medicine, Chonbuk National University Medical School, Jeonju, Jeonbuk, Republic of Korea
| | - S H Kim
- Department of Internal Medicine, Chonbuk National University Hospital, Chonbuk National University Medical School, Jeonju, Republic of Korea
- Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute, Chonbuk National University Hospital, Chonbuk National University Medical School, 20 Geonji-ro, Deokjin-gu, Jeonju, Jeonbuk, 54896, Republic of Korea
| | - I H Kim
- Department of Internal Medicine, Chonbuk National University Hospital, Chonbuk National University Medical School, Jeonju, Republic of Korea
- Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute, Chonbuk National University Hospital, Chonbuk National University Medical School, 20 Geonji-ro, Deokjin-gu, Jeonju, Jeonbuk, 54896, Republic of Korea
| | - S O Lee
- Department of Internal Medicine, Chonbuk National University Hospital, Chonbuk National University Medical School, Jeonju, Republic of Korea
- Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute, Chonbuk National University Hospital, Chonbuk National University Medical School, 20 Geonji-ro, Deokjin-gu, Jeonju, Jeonbuk, 54896, Republic of Korea
| | - S T Lee
- Department of Internal Medicine, Chonbuk National University Hospital, Chonbuk National University Medical School, Jeonju, Republic of Korea
- Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute, Chonbuk National University Hospital, Chonbuk National University Medical School, 20 Geonji-ro, Deokjin-gu, Jeonju, Jeonbuk, 54896, Republic of Korea
| | - Sang Wook Kim
- Department of Internal Medicine, Chonbuk National University Hospital, Chonbuk National University Medical School, Jeonju, Republic of Korea.
- Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute, Chonbuk National University Hospital, Chonbuk National University Medical School, 20 Geonji-ro, Deokjin-gu, Jeonju, Jeonbuk, 54896, Republic of Korea.
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Lee HJ, Boo SJ, Jung KW, Han S, Seo SY, Koo HS, Yoon IJ, Park SH, Yang DH, Kim KJ, Ye BD, Byeon JS, Yang SK, Kim JH, Myung SJ. Long-term efficacy of biofeedback therapy in patients with dyssynergic defecation: results of a median 44 months follow-up. Neurogastroenterol Motil 2015; 27:787-95. [PMID: 25807997 DOI: 10.1111/nmo.12552] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [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: 11/26/2014] [Accepted: 02/22/2015] [Indexed: 12/24/2022]
Abstract
BACKGROUND The beneficial effect of biofeedback therapy (BFT) over a period of more than 2 years has not been studied in a large group of patients. The aim of this study was to evaluate the long-term efficacy of BFT for dyssynergic defecation (DD). METHODS We evaluated the results for 347 consecutive constipated patients with DD who underwent BFT for a median of five sessions between 2004 and 2009. Initial responses were assessed immediately after the completion of BFT. A responder was defined as a subject with at least a three-point improvement from before to after BFT on an 11-point global bowel satisfaction (GBS) scale, or a two-point improvement if the baseline GBS was more than six points. The probability of remaining a responder was estimated by non-parametric maximum likelihood estimation. KEY RESULTS The initial response rate to BFT was 72.3% (n = 251), Parkinson's disease and higher baseline GBS scores were associated with initial non-response. The long-term efficacy of BFT was analyzed in 103 patients who were followed up for more than 6 months; the initial effects of BFT were maintained in 85 of the patients (82.5%) during a median of 44 months of follow-up (IQR = 12-68). The probability of remaining a responder was 60% at 2 years, and 58% at 5 years. CONCLUSIONS & INFERENCES The efficacy of BFT is maintained for more than 2 years after BFT in a considerable proportion of constipated patients with DD. BFT is effective and durable treatment for managing DD.
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Affiliation(s)
- H J Lee
- Department of Gastroenterology, Asan Digestive Disease Research Institute, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.,Health Screening and Promotion Center, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - S-J Boo
- Department of Internal Medicine, Jeju National University School of Medicine, Jeju, Korea
| | - K W Jung
- Department of Gastroenterology, Asan Digestive Disease Research Institute, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - S Han
- Department of Clinical Epidemiology and Biostatistics, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - S Y Seo
- Department of Gastroenterology, Asan Digestive Disease Research Institute, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - H S Koo
- Department of Gastroenterology, Asan Digestive Disease Research Institute, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - I J Yoon
- Department of Gastroenterology, Asan Digestive Disease Research Institute, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - S H Park
- Department of Gastroenterology, Asan Digestive Disease Research Institute, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - D-H Yang
- Department of Gastroenterology, Asan Digestive Disease Research Institute, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - K-J Kim
- Department of Gastroenterology, Asan Digestive Disease Research Institute, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - B D Ye
- Department of Gastroenterology, Asan Digestive Disease Research Institute, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - J-S Byeon
- Department of Gastroenterology, Asan Digestive Disease Research Institute, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - S-K Yang
- Department of Gastroenterology, Asan Digestive Disease Research Institute, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - J-H Kim
- Department of Gastroenterology, Asan Digestive Disease Research Institute, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - S-J Myung
- Department of Gastroenterology, Asan Digestive Disease Research Institute, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
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Jung KW, Jung HY, Myung SJ, Kim SO, Lee J, Yoon IJ, Seo SY, Lee JH, Kim DH, Choi KD, Song HJ, Lee GH, Murray JA, Romero Y, Kim JH. The effect of age on the key parameters in the Chicago classification: a study using high-resolution esophageal manometry in asymptomatic normal individuals. Neurogastroenterol Motil 2015; 27:246-57. [PMID: 25521290 DOI: 10.1111/nmo.12482] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Accepted: 11/10/2014] [Indexed: 12/21/2022]
Abstract
BACKGROUND High-resolution manometry using the Chicago classification, which utilizes parameters including integrated relaxation pressure (IRP), distal contractile integral (DCI), and contractile front velocity (CFV), shows better diagnostic ability than previous conventional criteria. However, the current normal cut-off values for the Chicago classification are based on individuals aged 19-48 years and do not include older people. Here, we aimed to assess the normal values for the Chicago classification in individuals aged 20-67 years and compare the parameters across age groups. METHODS Fifty-four asymptomatic healthy individuals (27 male and 27 female; age range. 20-67 years) were prospectively enrolled. To evaluate the effect of age and sex on manometric profiles, we attempted to enroll equal numbers of male and female subjects for each decade. Manometry was performed in both the supine and sitting positions. KEY RESULTS The distal latency (DL) was significantly shorter with increasing age in both measurement positions. Furthermore, IRP was significantly higher with increasing age in both positions. Spearman's ranked correlation coefficient analysis indicated that DCI and IRP in both positions were positively correlated with age. CONCLUSIONS & INFERENCES Age affects the key parameters currently used in the Chicago classification, including IRP, DCI, and DL. Larger prospective studies with older subjects are needed to determine the age-related normal values for the Chicago classification system.
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Affiliation(s)
- K W Jung
- Department of Gastroenterology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
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Lee HJ, Jung KW, Han S, Kim JW, Park SK, Yoon IJ, Koo HS, Seo SY, Yang DH, Kim KJ, Ye BD, Byeon JS, Yang SK, Kim JH, Myung SJ. Normal values for high-resolution anorectal manometry/topography in a healthy Korean population and the effects of gender and body mass index. Neurogastroenterol Motil 2014; 26:529-37. [PMID: 24387705 DOI: 10.1111/nmo.12297] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [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: 05/24/2013] [Accepted: 12/05/2013] [Indexed: 02/08/2023]
Abstract
BACKGROUND High-resolution manometry (HRM) based on spatiotemporal plots is increasingly being used. The aim this study was to evaluate, for the first time, the influence of gender, with adjustment for age, body mass index (BMI), and vaginal delivery, on anorectal functions in asymptomatic adults. METHODS Fifty-four asymptomatic healthy subjects (M : F = 27 : 27; age = 20-67 years) who were matched by age and gender were enrolled prospectively. We evaluated anorectal pressures, rectal sensation using a HRM probe, and balloon expulsion time. Multivariate linear regression analysis was performed to identify the independent effects of each factor. KEY RESULTS Anal resting pressure (median [IQR]; 32 [18] vs 46 [17] mmHg, p < 0.001), anal squeeze pressure (75 [28] vs 178 [72] mmHg, p < 0.001), rectal pressure (33 [16] vs 53 [46] mmHg, p = 0.009) and anal pressure (16 [17] vs 30 [36] mmHg, p = 0.019) during simulated evacuation with rectal distention, and the threshold for the desire to defecate (60 [20] vs 80 [60] mL, p = 0.020) were significantly lower in women than in men. BMI was positively correlated with anal resting pressure (95% CI: 0.598-2.947) and negatively correlated with the threshold for first sensation (95% CI: -0.099 to -0.015). Vaginal delivery did not affect any of the anorectal HRM parameters. CONCLUSIONS & INFERENCES HRM parameters may be associated with gender and BMI. Therefore, gender and BMI should be taken into consideration when interpreting HRM results.
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Affiliation(s)
- H J Lee
- Department of Gastroenterology, Asan Digestive Disease Research Institute, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
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Abstract
The relationship between the wax matrix in lipstick and sweating has been investigated by observing the change of size and shape of the wax matrix due to sweating by Scanning Electron Microscopy (SEM). For observation by SEM, a lipstick sample was frozen in liquid nitrogen. The oil in the lipstick was then extracted in cold isopropanol (-70 degrees C) for 1-3 days. After the isopropanol was evaporated, the sample was sputtered with gold and examined by SEM. The change of wax matrix underneath the surface from fine, uniform structure to coarse, nonuniform structure resulted from the caking of surrounding wax matrix. The oil underneath the surface migrated to the surface of lipstick with sweating; consequently the wax matrix in that region was rearranged into the coarse matrix. In case of flamed lipstick, sweating was delayed and the wax matrix was much coarser than that of the unflamed one. The larger wax matrix at the surface region was good for including oil. The effect of molding temperature on sweating was also studied. As the molding temperature rose, sweating was greatly reduced and the size of the wax matrix increased. It was found that sweating was influenced by the compatibility of wax and oil. A formula consisting of wax and oil that have good compatibility has a tendency to reduce sweating and increase the size of the wax matrix. When pigments were added to wax and oil, the size of the wax matrix was changed, but in all cases sweating was increased due to the weakening of the binding force between wax and oil. On observing the thick membrane of wax at the surface of lipstick a month after molding it was also found that sweating was influenced by ageing. In conclusion, the structure of the wax matrix at the surface region of lipstick was changed with the process of flaming, molding temperature, compatibility of wax and oil, addition of pigment, and ageing. In most cases, as the size of the wax matrix was increased, sweating was reduced and delayed.
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Affiliation(s)
- S Y Seo
- Household and Personal Care Products R&D Institute, LG Chemical Ltd. #84, Jang dong, Yusong gu, Taejon, 305-343, Korea
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10
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Affiliation(s)
- Y-B Chen
- Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
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11
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Park BS, Song YS, Yee SB, Lee BG, Seo SY, Park YC, Kim JM, Kim HM, Yoo YH. Phospho-ser 15-p53 translocates into mitochondria and interacts with Bcl-2 and Bcl-xL in eugenol-induced apoptosis. Apoptosis 2005; 10:193-200. [PMID: 15711935 DOI: 10.1007/s10495-005-6074-7] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Our previous studies demonstrated that antiallergic effects of herbs such as clove and Magnoliae Flos (MF) resulted from the induction of apoptosis in mast cells. We here examined whether the antiallergic activity was caused by eugenol (4-allyl-2-methoxyphenol) which was one of major ingredients in the essential oils or extracts of numerous plants including clove and Magnoliae Flos. RBL-2H3 cells were treated with eugenol, and DNA electrophoresis, Western blotting, immunocytochemistry, confocal microscopy and immunoprecipitation were conducted. Effect of eugenol was tested using a rat anaphylaxis model. RBL-2H3 cells treated with eugenol showed typical apoptotic manifestations and translocation of p53 into mitochondria. Antisense p53 partially prevented the induction of apoptosis. Noticeably, we observed that p53 translocated into mitochondria was phosphorylated on ser 15. Phospho-ser 15-p53 physically interacted with Bcl-2 and Bcl-xL in mitochondria and its translocation into mitochondria preceded cytochrome c release and mitochondrial membrane potential (MMP) reduction. We also depicted that the survival of animals even after administration of the fatal dose of compound 48/80 might result from the decreased number of mast cells by eugenol pretreatment. In conclusion, eugenol induces apoptosis in mast cells via translocation of phospho-ser 15-p53 into mitochondria.
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Affiliation(s)
- B S Park
- Department of Oral Anatomy and Cell Biology, Pusan National University College of Dentistry, Busan, South Korea
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12
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Abstract
The present study was conducted to explore the potential role of proteasome pathway in NSAIDs-induced apoptosis. We employed sulindac as a NSAID, and chose the lactacystin for inhibition of proteasome activity. Assessment of apoptosis and proteasome activity assay were undertaken. We demonstrated that sulindac treatment resulted in a decrease of proteasome activity, and that the co-treatment of a proteasome inhibitor lactacystin potentiated the extent of sulindac-induced apoptosis in HT-29 cells by augmentation of the decrease in proteasome activity. Elucidation of the mechanism underlying the regression of colon cancers by combinations of sulindac and lactacystin seems to be an immediate challenge for the near future.
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Affiliation(s)
- H J Choi
- Department of General Surgery, Dong-A University College of Medicine, Dongdaesin-Dong, Seo Gu, Pusan 602-714, South Korea
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13
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Shin JY, Lee SK, Kang CD, Chung JS, Lee EY, Seo SY, Lee SY, Baek SY, Kim BS, Kim JB, Yoon S. Antitumor effect of intratumoral administration of dendritic cell combination with vincristine chemotherapy in a murine fibrosarcoma model. Histol Histopathol 2003; 18:435-47. [PMID: 12647794 DOI: 10.14670/hh-18.435] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [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
A new antitumor therapeutic strategy utilizing the combined effect of chemotherapy and DC (dendritic cell)-based immunotherapy was designed, and the effect of intratumoral injections of unpulsed, immature DCs was evaluated after in vivo pretreatment of vincristine on tumor growth in a murine fibrosarcoma tumor model. Vincristine exerted a much more potent apoptosis/necrosis-inducing effect on MCA-102 tumor cells than on DCs both in vitro and in vivo. Moreover, CD11c, CD40, CD80 and CD86 molecules on DCs were not downregulated after treatment with vincristine either in vitro or in vivo. The growth of tumor significantly regressed in the group which received the combined vincristine chemotherapy with intratumoral administration of DCs in contrast to the untreated group, the group treated with DCs alone, and the group treated with vincristine alone. In particular, an upregulated expression of CD40, CD80 and CD86 molecules on DCs was found in the combination treatment group. Furthermore, the number of CD4+ and CD8+ T cells and the staining intensity of their CD4 and CD8 surface molecules also increased after the combination treatment. Therefore, our results indicate the feasibility of this combination therapy with vincristine chemotherapy and DC-based immunotherapy as an efficient antitumor strategy for the treatment of fibrosarcoma.
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Affiliation(s)
- J Y Shin
- Department of Anatomy, College of Medicine, Pusan National University, Seo-Gu, Pusan, South Korea
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Lee HJ, Choi SS, Park MK, An YJ, Seo SY, Kim MC, Hong SH, Hwang TH, Kang DY, Garber AJ, Kim DK. Fenofibrate lowers abdominal and skeletal adiposity and improves insulin sensitivity in OLETF rats. Biochem Biophys Res Commun 2002; 296:293-9. [PMID: 12163016 DOI: 10.1016/s0006-291x(02)00822-7] [Citation(s) in RCA: 91] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The effect of peroxisome proliferator-activated receptor (PPAR)-alpha activators on the liver is well established, but the other effects on muscle and adipose tissue about lipid metabolism and insulin sensitivity are not clear. We investigated whether PPAR-alpha activation affects adiposity of skeletal muscle as well as adipose tissue and improves insulin sensitivity in spontaneous type 2 diabetes model, Otsuka Long-Evans Tokushima Fatty (OLETF) rats. Thirty-three weeks of aged, 20 male OLETF rats were divided into two groups. Control group (n=10) was fed with chow and treatment group (n=10) with chow contained fenofibrate for 7 weeks. At the age of 40 weeks, all rats were examined with MRI, intravenous glucose tolerance test, and then sacrificed for measurement of fat mass and RNA analyses. The total fat (the sum of subcutaneous, mesenteric, epididymal, and retroperitoneal fat pads) measured by dissection was significantly reduced in treatment group. The signal intensity of muscular adiposity was significantly decreased in treatment group. The mRNA levels of FAT/CD36 and mitochondrial carnitine palmitoyltransferase I (M-CPT I) in liver were remarkably increased. Fasting plasma insulin and leptin levels, insulin response after intravenous glucose loading and homeostasis model assessment insulin resistance (HOMA(IR)) index were lowered in treatment group. Fenofibrate increase mitochondrial fatty acid beta-oxidation in liver but not in skeletal muscle and lower the plasma levels of triglyceride and free fatty acid. It might result in reduction of adiposity of truncal adipose tissue and skeletal muscle. We suggest that reduction of adiposity in trunk and skeletal muscle might improve insulin sensitivity.
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Affiliation(s)
- H J Lee
- Department of Pharmacology, Dong-A University College of Medicine, Busan, Republic of Korea
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15
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Seo SY, Yun BS, Ryoo IJ, Choi JS, Joo CK, Chang SY, Chung JM, Oh S, Gwag BJ, Yoo ID. Complestatin is a noncompetitive peptide antagonist of N-methyl-D-aspartate and alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid/kainate receptors: secure blockade of ischemic neuronal death. J Pharmacol Exp Ther 2001; 299:377-84. [PMID: 11561102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023] Open
Abstract
Complestatin, a peptide derived from Streptomyces, was found to protect cultured cortical neurons from excitotoxicity induced by N-methyl-D-aspartate (NMDA), alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA), or kainate. This neuroprotective behavior of complestatin was attributed to a blockade of Ca2+ ion entry and accumulation, after the activation of NMDA and AMPA/kainate receptors. Complestatin reversibly interfered with NMDA- and AMPA-mediated excitatory synaptic transmission. Complestatin also protected cortical neurons from prolonged deprivation of oxygen and glucose, more effectively than combined antagonists of NMDA and AMPA/kainate receptors. Neurotoxicity, evolving within 1 to 2 days after continuous exposure to combined NMDA and AMPA/kainate antagonists, was not observed in cortical cell cultures that were exposed to complestatin. Finally, complestatin dose dependently prevented neuronal death evolving within the inner nuclear and ganglion cell layers, after transient retinal ischemia. We conclude that complestatin possesses novel pharmacological properties that effectively prevent excitotoxicity under certain pathological conditions.
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Affiliation(s)
- S Y Seo
- Department of Neuroscience and Pharmacology and Center for the Interventional Therapy of Stroke and Alzheimer's Disease, Ajou University School of Medicine, Suwon, Korea
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Seo SY, Kim EY, Kim H, Jou I, Gwag BJ. Attenuation of neuronal death by NMDA and oxygen-glucose deprivation in cortical neurons maintained in high glucose. Ann N Y Acad Sci 2000; 893:396-9. [PMID: 10672276 DOI: 10.1111/j.1749-6632.1999.tb07864.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- S Y Seo
- Department of Pharmacology, Ajou University School of Medicine, Suwon, Kyungkido, Korea
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Lee YH, Han JY, Choi AH, Lee HS, Hur WJ, Seo SY, Han H, Kim JS, Kim HJ. The alterations of the activities of coagulation inhibitors and fibrinolytic factors in stored cord blood could affect the yield of progenitor cells during processing. J Hematother Stem Cell Res 1999; 8:653-7. [PMID: 10645773 DOI: 10.1089/152581699319821] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
We assessed the changes in the activities of hemostatic variables by the storage temperature and time interval between collection and separation of cord blood (CB) and analyzed their relationship with the yield of progenitor cells during processing. Total nucleated cell (TNC) and CD34+ cell counts were significantly higher in the CB stored at ambient temperature than at 4 degrees C. The significant loss of TNC and CD34+ cells continued to 24 h after collection in CB stored at 4 degrees C, but loss of TNC began only after 24 h at ambient temperature. There were no changes in the plasma activities of antithrombin III (ATIII) and plasminogen. The activity of protein C was decreased significantly until 24 h after collection, particularly in CB stored at 4 degrees C. The activity of alpha2-antiplasmin was decreased until 24 h in CB stored at 4 degrees C and from 24 h in CB stored at ambient temperature. These data suggest that the alterations in the activities of coagulation inhibitors and fibrinolytic factors could be an important factor in coagulability, particularly in CB stored at 4 degrees C compared to ambient temperature, and also affect the yield of progenitor cells in processed CB.
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Affiliation(s)
- Y H Lee
- Hematopoietic Stem Cell Transplantation Program, Dong-A Cancer Center, Dong-A University Hospital, Pusan, Korea
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Seo SY, Kim EY, Kim H, Gwag BJ. Neuroprotective effect of high glucose against NMDA, free radical, and oxygen-glucose deprivation through enhanced mitochondrial potentials. J Neurosci 1999; 19:8849-55. [PMID: 10516304 PMCID: PMC6782766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/14/2023] Open
Abstract
Cultured cortical neurons maintained in 25 mM glucose underwent a widespread neuronal death after exposure to NMDA, AMPA, and kainate. Among these, NMDA toxicity was substantially reduced in neurons maintained in 100 mM glucose. NMDA-induced increase in [Ca(2+)](i) and reactive oxygen species was attenuated in neurons maintained in high glucose that revealed increased mitochondrial membrane and redox potentials as determined using rhodamine 123 and 3-(4, 5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide. p-trifluoromethoxy-phenylhydrazone, KCN, and rotenone, the selective inhibitors of mitochondrial potential, abrogated neuroprotective effect of high glucose against NMDA. The neuroprotective action of high glucose was extended against oxygen or combined oxygen-glucose deprivation. The present study provides evidence that prolonged exposure of cortical cells to high glucose attenuates NMDA- and free radical-mediated neuronal death via enhanced mitochondrial function.
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Affiliation(s)
- S Y Seo
- Department of Pharmacology, Ajou University School of Medicine, Suwon, Kyungkido, 442-749 Korea
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Vallera DA, Seo SY, Panoskaltsis-Mortari A, Griffin JD, Blazar BR. Targeting myeloid leukemia with a DT(390)-mIL-3 fusion immunotoxin: ex vivo and in vivo studies in mice. Protein Eng 1999; 12:779-85. [PMID: 10506288 DOI: 10.1093/protein/12.9.779] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The IL-3 receptor was expressed on a high frequency of myeloid leukemia cells and also on hematopoietic and vascular cells. We previously showed that a recombinant IL-3 fusion immunotoxin (DT(390)IL-3) expressed by splicing the murine IL-3 gene to a truncated diphtheria toxin (DT(390)) gene selectively killed IL-3R(+) expressing cells and was not uniformly toxic to uncommitted BM progenitor cells (Chan,C.-H., Blazar,B.R., Greenfield,L., Kreitman,R.J. and Vallera,D.A., 1996, Blood, 88, 1445-1456). Thus, we explored the feasibility of using DT(390)IL-3 as an anti-leukemia agent. DT(390)IL-3 was toxic when administered to mice at doses as low as 0.1 microg/day. The dose limiting toxicity appeared to be related to platelet and bleeding effects of the fusion toxin. Because of these effects, DT(390)IL-3 was studied ex vivo as a means of purging contaminating leukemia cells from BM grafts in a murine autologous BM transplantation. In this setting, as few as 1000 IL-3R-expressing, bcr/abl transformed myeloid 32Dp210 leukemia cells were lethal. An optimal purging interval of 10 nM/l for 8 h eliminated leukemia cells from 32Dp210/BM mixtures given to lethally irradiated (8 Gy) C3H/HeJ syngeneic mice. Mice given treated grafts containing BM and a lethal dose of 32Dp210 cells survived over 100 days while mice given untreated grafts did not survive (P < 0.00001). DT(390)IL-3 may prove highly useful for ex vivo purging of lethal malignant leukemia cells from autologous BM grafts.
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Affiliation(s)
- D A Vallera
- University of Minnesota Cancer Center, Department of Therapeutic Radiology (Section on Experimental Cancer Immunology) Minneapolis, MN 55455, USA
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Abstract
Lipoma is the commonest soft-tissue tumour arising anywhere in the body, but its occurrence in the nasopharynx is extremely rare. Only four cases in adults have been previously reported in the English literature. We describe a 63-year-old woman with a nasopharyngeal mass that was removed transorally and verified histopathologically as chondrolipoma, that is a lipoma with chondroid metaplasia.
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Affiliation(s)
- K H Hong
- Department of Otolaryngology-Head and Neck Surgery, Medical School, Institute for Medical Science, Chonbuk National University, Korea
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