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Kim JH, Son JS, Choi YJ, Choresca CH, Shin SP, Han JE, Jun JW, Kang DH, Oh C, Heo SJ, Park SC. Isolation and characterization of a lytic Myoviridae bacteriophage PAS-1 with broad infectivity in Aeromonas salmonicida. Curr Microbiol 2012; 64:418-26. [PMID: 22314935 DOI: 10.1007/s00284-012-0091-x] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2011] [Accepted: 01/18/2012] [Indexed: 10/14/2022]
Abstract
To search for candidate control agents against Aeromonas salmonicida subsp. salmonicida infections in aquaculture, one bacteriophage (phage), designated as PAS-1, was isolated from the sediment samples of the rainbow trout (Oncorhynchus mykiss) culture farm in Korea. The PAS-1 was morphologically classified as Myoviridae and possessed approximately 48 kb of double-strand genomic DNA. The phage showed broad host ranges to other subspecies of A. salmonicida as well as A. salmonicida subsp. salmonicida including antibiotic-resistant strains. Its latent period and burst size were estimated to be approximately 40 min and 116.7 PFU/cell, respectively. Furthermore, genomic and structural proteomic analysis of PAS-1 revealed that the phage was closely related to other Myoviridae phages infecting enterobacteria or Aeromonas species. The bacteriolytic activity of phage PAS-1 was evaluated using three subspecies of A. salmonicida strain at different doses of multiplicity of infection, and the results proved to be efficient for the reduction of bacterial growth. Based on these results, PAS-1 could be considered as a novel Aeromonas phage and might have potentiality to reduce the impacts of A. salmonicida infections in aquaculture.
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Park J, Han J, Kim C, Oh C, Suh T, Kim D, Chung H. SU-E-T-402: Coordinate Transformation after Stereotactic Frame Reapplication in Gamma Knife Radiosurgery. Med Phys 2012; 39:3797. [PMID: 28517228 DOI: 10.1118/1.4735491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
PURPOSE In Gamma Knife (GK) radiosurgery, the occurrence of reapplying the stereotactic frame due to collision with the collimator leads to re- examination and re-planning. For the treatment of vascular lesions, it is a burden not only to physicians but also to patients to get invasive angiography procedure again. To avoid undergoing second angiography examination, and reduce re-planning time, a mathematical coordinate transformation method using the stereotactic images has been developed. METHODS The MR or CT images of a patient brain before and after frame reapplication can be correlated with each other using the Affine transformation. The transformation parameters which minimize the RMS error of the original and transformed coordinates between the images were determined using a genetic algorithm. Three CT image studies of skull phantom were used for the verification of the algorithm. Moreover, five MR image studies of patients who underwent more than one GK procedure were used for the clinical evaluation. The coordinates under the original treatment plan were converted to new coordinates using the transformation matrix, and their dosimetric outcomes were compared. RESULTS The RMS error in the coordinate transformation of skull phantom and clinical images was 0.3 mm and 0.6 mm, respectively. For total 9 treatment lesions of 0.2 ∼14.1 cc, 3% and 11% RMS error in the irradiation time and target coverage were found respectively. The patients with only translational movement during the frame reapplication showed similar plan conversion results with the original plan. Also, deeply-located lesions showed a better RMS error of 3% in the conformity index than superficial lesions close to the skull. CONCLUSIONS New treatment plans were obtained by applying the coordinate transformation to the original plans after the frame reapplication. The converted plans maintained the quality of the original plans with a little change in dose distribution arising from head rotation. This work was supported by a grant no. 04-2011-0320110130 from the Seoul National University Hospital Research Fund and a National Research Foundation of Korea (NRFK) grant funded by the Korean government (MEST) (Grant No. K20901000001-09E0100-00110).
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Oh HK, Oh C, Jung S, Kook MS, Cho M, Park H, Yoon S, Ha J, Ryu SY. Clinical study of false positive lymph node of neck in FDG-PET/CT of the oral cancer patients. Int J Oral Maxillofac Surg 2011. [DOI: 10.1016/j.ijom.2011.07.498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Oh C, Chung K, Hur J, Jang S, Jung S, Kook MS, Park H, Oh HK, Ryu SY. Oral reconstruction using free fibular flap and do after surgical excision of malignant tumor in mandible. Int J Oral Maxillofac Surg 2011. [DOI: 10.1016/j.ijom.2011.07.328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Cho I, Yoo C, Oh C, Kim S, Km Y, Kim H, Seong D, Chung H, Hong S, Cho J. UP-01.171 Age and Gender, Independent Prognostic Factors of Renal Cell Carcinomas: A Multicenter Study. Urology 2011. [DOI: 10.1016/j.urology.2011.07.722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Reid C, Harper S, Tzannes A, Habig K, Coombes S, Hayes S, Burns B, Oh C, Newcombe M, Fineberg SL, Tall G, Novy M. Google governance: increasing the effectiveness of critical care physicians through the use of an online usergroup. Emerg Med J 2011; 27:50-1. [PMID: 20029008 DOI: 10.1136/emj.2009.075713] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
AIMS The aim of this study was to describe the use of an online user group to enhance communication and productivity by critical care specialists. METHODS In this article, we provide a description of the first 6 months of use of an online user group by senior retrieval physicians. RESULTS Initially developed as a communication and online discussion tool, our online user group evolved to include a number of other utilities that support clinical governance. These included a repository for useful files, educational presentations, online rostering and "portfolio pages", updating aspects of an individual specialist's non-clinical activity. Its applications continue to evolve in number and utility. Participating physicians perceive an increase in organisational efficiency. CONCLUSIONS An online user group such as Google Groups may provide powerful support to an organisation's clinical governance. We recommend this tool to other services with limited administrative personnel.
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Lee S, Kim S, Lee W, Oh C, Cho S, Park C, Lee S, Kim H, Choi N. UP-1.79: The association between lower urinary tract symptoms and vascular risk factors in aging men: Hallym aging study. Urology 2010. [DOI: 10.1016/j.urology.2010.07.533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Oh C, Choi N, Lee S, Yoo C, Cho J, Park S, Cho S. MP-04.13: The early experience of simultaneous transobturator tape (TOT) and trocar-guided tension free vaginal mesh (Prolift) procedures in patients with stress urinary incontinence concomitant with anterior vaginal wall prolapse. Urology 2010. [DOI: 10.1016/j.urology.2010.07.409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Oh IH, Oh C, Kim HJ, Choi JM, Yoon TY, Chung JH, Choe BK. Genetic Associations of IL1RN Polymorphisms with Metabolic Syndrome in a Korean Population. Exp Clin Endocrinol Diabetes 2010; 118:333-7. [DOI: 10.1055/s-0030-1248288] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Upmalis D, Pei H, Okamoto A, Laschewski F, Rauschkolb-Löffler C, Häussler J, Häufel T, Lange C, Oh C. A pooled analysis of the incidences of treatment-emergent adverse events associated with discontinuation in phase 2/3 studies of tapentadol IR. THE JOURNAL OF PAIN 2009. [DOI: 10.1016/j.jpain.2009.01.176] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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McGovern P, Solnica A, Oh C, Cho M, Loughlin J, McCulloh D. Patient satisfaction and clinical outcome after injecting gonadotropins (either bravelle® and/or menopur®) using the biojector® 2000 for controlled ovarian stimulation for in-vitro fertilization. Fertil Steril 2008. [DOI: 10.1016/j.fertnstert.2008.07.1506] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Rees JL, Waterston K, Naysmith L, Oh C, Hennessy A, Bisset Y, Diffey B, Ito S, Wakamatsu K. Red hair, fair skin and melanoma - melanocortin 1 receptor. Exp Dermatol 2008. [DOI: 10.1111/j.0906-6705.2004.0212g.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Oh C, Upmalis D, Okamoto A, Ma Y, Stegmann J, Daniels S. (229) Efficacy of tapentadol immediate release in patients with pain after bunionectomy. THE JOURNAL OF PAIN 2008. [DOI: 10.1016/j.jpain.2008.01.150] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Hartrick C, Okamoto A, Oh C, Van Hove I, Stegmann J, Upmalis D. (222) Analgesic efficacy of tapentadol immediate release in patients with pain from end stage joint disease. THE JOURNAL OF PAIN 2008. [DOI: 10.1016/j.jpain.2008.01.143] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Afilalo M, Oh C, Okamoto A, Van Hove I, Stegmann J, Upmalis D. (224) Tapentadol immediate release compared with oxycodone immediate release for the relief of moderate-to-severe pain in patients with end stage joint disease. THE JOURNAL OF PAIN 2008. [DOI: 10.1016/j.jpain.2008.01.145] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Jones B, Oh C, Corkery E, Hanley R, Egan CA. Attitudes and perceptions regarding skin cancer and sun protection behaviour in an Irish population. J Eur Acad Dermatol Venereol 2007; 21:1097-101. [PMID: 17714132 DOI: 10.1111/j.1468-3083.2007.02209.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Although people seem to be well educated on the harmful effects of the sun, they continue to intentionally expose themselves without adequate protection. AIMS To ascertain baseline knowledge regarding skin cancer and review the sun protection behaviours in an Irish population and the effect of doctor-based education on these behaviours. METHODS Two hundred participants were recruited for a questionnaire-based study on their perceptions regarding skin cancer and their sun protection behaviour. They were divided into two groups, with one group receiving doctor-based education following the initial survey, and a follow-up questionnaire was carried out within 3 months. RESULTS Ninety per cent of participants knew that sun exposure was the major risk factor for skin cancer, and 95% knew that sun beds were not a safe way to tan. Despite this, < 20% used regular sunscreen, and 30% had used or were currently using sun beds in order to tan. CONCLUSION Our study indicated that although the participants' knowledge of skin cancer and risk of sun exposure is high, their sun-protective attitudes were not influenced by education in the clinical setting.
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García A, Chang Y, Abarca A, Oh C. RFID enhanced MAS for warehouse management. INTERNATIONAL JOURNAL OF LOGISTICS-RESEARCH AND APPLICATIONS 2007. [DOI: 10.1080/13675560701427379] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Oh C, Harman C, Baschat AA. Abnormal first-trimester ductus venosus blood flow: a risk factor for adverse outcome in fetuses with normal nuchal translucency. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2007; 30:192-6. [PMID: 17518423 DOI: 10.1002/uog.4034] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
OBJECTIVES First-trimester nuchal translucency thickness (NT) is a potent tool for assessment of fetal risks of aneuploidy and other adverse outcomes. When NT is increased, Doppler assessment of the ductus venosus (DV) enhances the prediction specificity for Down syndrome. This study assessed abnormal Doppler DV waveform as a predictor of adverse outcome when the NT is normal. METHODS This was a case-control study of 2,505 consecutive patients undergoing NT screening in our certified first-trimester screening program. First-trimester Doppler assessment of DV was performed and atrial systolic velocity was rated as antegrade (normal) or absent/reversed (DV-RAV; abnormal). Each case with normal NT (< 95(th) percentile) and DV-RAV was matched with two controls with respect to maternal age within 1 year, NT within 0.2 mm, crown-rump length within 3 mm, and closest calculated aneuploidy risk. Outcomes for paired variables were compared using t-test and Chi-square test. RESULTS Forty-seven (1.9%) patients had normal NT and DV-RAV. After exclusion of three cases with obvious first-trimester anomalies and two with incomplete outcome data, 42 remained for analysis. Adverse outcome included cardiovascular defects (n = 6), fetal growth restriction (n = 3), renal anomaly (n = 2), aneuploidy (n = 3) and multiple defects (n = 3), in a total of 11/42 cases (26.2%). Cardiac abnormalities, renal abnormalities and perinatal death were all significantly more common in the study group (all P < 0.05). CONCLUSIONS Abnormal first-trimester DV Doppler findings appear to predict adverse outcome independently of a normal NT. These patients need detailed mid-trimester assessment of fetal anatomy with formal echocardiography, and subsequent follow-up.
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Marzo E, Ma Z, Oh C. Effect of Montelukast on Collagen Deposition of the Eyes in a Murine Model of Chronic Allergic Eye Disease. J Allergy Clin Immunol 2007. [DOI: 10.1016/j.jaci.2006.11.257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Yoon C, Yoon D, Sung D, Lee J, Kim A, Oh C, Je J, Yoon D. UP-03.52. Urology 2006. [DOI: 10.1016/j.urology.2006.08.911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Bryant JL, Yang DJ, Schechter NR, Chang JY, Kohanim S, Azhdarinia A, Yu D, Mendez R, Oh C, Kim EE. 99mTc-EC-DG: A novel tracer for tumor imaging. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Jang HS, Jung D, Kim S, Jo J, Lee J, Kim M, Oh C, Kwon K. A case of primary erythromelalgia improved by mexiletine. Br J Dermatol 2004; 151:708-10. [PMID: 15377366 DOI: 10.1111/j.1365-2133.2004.06167.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Abstract
We report two patients with severe palmar hyperhidrosis who responded to BOTOX delivered not by injection, the usual method of delivery, but by iontophoresis. The Botulinum molecule has been considered too large for delivery into the skin this way. However, other large peptides, both non-ionic and cationic, have been delivered successfully by this method, so we suspected that BOTOX could in fact be iontophoresed. Our saline-controlled treatment of these two patients with a small iontophoresis unit (Iomed Phoresor II) allowed small volumes of standard BOTOX dilutions to be used, and demonstrates that iontophoresis can indeed deliver BOTOX successfully. This has important therapeutic potential for the large number of patients with focal hyperhidrosis. They may be spared painful injections, and in more severe cases, invasive surgery.
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Yang K, Oh C, Hwang S. Optimizing volatile fatty acid production in partial acidogenesis of swine wastewater. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2004; 50:169-176. [PMID: 15566200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
This research has been conducted based on the fact that acetic and butyric acids are favorable substrates for methanogens, and that a low level of propionic acid production during acidogenesis minimizes the inhibition effect on methanogenic growth. Raw swine wastewater was pretreated with ammonia stripping to enhance acidogenesis. The ammonia nitrogen concentration of less than 1.2 g/L did not significantly affect the biochemical acidogenic potential of swine wastewater. For acidogenesis of swine wastewater, a set of experiments were carried out to produce short chain volatile fatty acids (VFA) in laboratory-scale continuously stirred tank reactors. The production of acetic, propionic, and butyric acids associated with simultaneous changes in hydraulic retention time (HRT) and temperature was investigated. Response surface methodology was successfully applied to approximate the responses of the VFA productions. The optimum physiological conditions where the maximum acetic and butyric acids production occurred were 2.4 days HRT at 34 degrees C and 2.1 days HRT at 35 degrees C, respectively. The propionic acid production linearly increased as both HRT and temperature increased.
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Oh C, Aho H, Shamsadin R, Nayernia K, Müller C, Sancken U, Szpirer C, Engel W, Adham IM. Characterization, expression pattern and chromosomal localization of the spermatogenesis associated 6 gene (Spata6). Mol Hum Reprod 2003; 9:321-30. [PMID: 12771232 DOI: 10.1093/molehr/gag047] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We report the cloning and characterization of the spermatogenesis associated 6 gene (Spata6) encoding a predicted protein of 488 amino acids. It exhibits similarity with the motor domain of kinesin related proteins and with the Caenorhabditis elegans neural calcium sensor protein (NCS-2). The gene encodes three mRNAs of approximately 2.6, approximately 1.8 and approximately 1.2 kb. The expression of the 2.6 kb mRNA is detected at low levels in testis, ovary, thymus and placenta, while the 1.8 and 1.2 kb transcripts are exclusively expressed in testis. The 1.8 and 1.2 kb transcripts are specifically expressed in haploid germ cells. Data from in situ hybridization experiments suggested that mRNA expression of Spata6 in spermatids is higher than in spermatocytes and spermatogonia. RT-PCR analysis and whole mount in situ hybridization demonstrate that the Spata6 transcript is expressed during embryonic development and is localized in neural tube, somites and limb buds of mouse embryo. The Spata6 gene consists of 15 exons ranging in size between 40 and 596 bp. The 2.6 and 1.8 kb transcripts have different 5' untranslated sequences but have the same translational initiation site and therefore may encode the same protein with a predicted molecular weight of 49.7 kDa. The 1.2 kb transcript is derived from a proximal promoter between exons 7 and 8, and contains a translation initiation codon AUG, which is in frame with initiator AUG codon of the 2.6 and 1.8 kb transcripts. Therefore, the 1.2 kb transcript may code for a truncated protein of 32 kDa. Western blot analysis with the antiserum raised against a synthetic peptide from the C-terminal of the deduced Spata6 protein detects only a single protein of 53 kDa in all tissues studied. The Spata6 gene was localized to chromosome 5, region q34-35 in the rat and to chromosome 1, region p32-35 in the human. In an effort to determine the function of Spata6, we inactivated the mouse gene in embryonic stem cells through homologous recombination. Although the heterozygous mutant cells were able to generate low coat colour chimeric mice, all chimeras did not transmit the targeted allele to their progeny suggesting that a high contribution of Spata6(+/-) cells lead to the lethality of the chimeric embryos.
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