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Cho WS, Koju G, Parajuli S, Gautam N, Smith M. Round window membrane rupture following blunt force trauma. Ann R Coll Surg Engl 2022; 104:e12-e13. [PMID: 34972493 DOI: 10.1308/rcsann.2021.0056] [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: 06/14/2023] Open
Abstract
Round window rupture following barotrauma such as diving and air travel is well documented. However, we describe a case of round window rupture following a slap to the ear, which has not been described previously. A 12-year-old boy was slapped by his teacher in rural Nepal over his left ear and immediately noted hearing loss. There was no dizziness or tinnitus. He presented to our unit 21 days after the trauma and examination showed a perforation of the tympanic membrane in the anterior inferior quadrant with an otherwise normal ear examination and no nystagmus seen. Audiogram showed a left profound hearing loss, which was supported by auditory brainstem response test. Exploratory tympanotomy showed active perilymph leakage from the round window niche as demonstrated in the video attached. The round window was packed with cartilage and fascia to address the perilymph leakage. The patient was discharged the following day without any complications. This is an unusual cause for round window membrane rupture where the patient presented with hearing loss as his only symptom. Tympanotomy is recommended for patients with hearing loss following trauma with normal computed tomography imaging to exclude perilymph leak secondary to inner ear barotrauma.
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Affiliation(s)
- W S Cho
- Nottingham University Hospitals NHS Trust, UK
| | - G Koju
- The Ear Centre, Green Pastures Hospital, Nepal
| | - S Parajuli
- The Ear Centre, Green Pastures Hospital, Nepal
| | - N Gautam
- The Ear Centre, Green Pastures Hospital, Nepal
| | - M Smith
- The Ear Centre, Green Pastures Hospital, Nepal
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Cho WS, Bonduelle Q, Ghasemi A, Baskaran V, O'Connor R, Shah J, Andrewartha F, Fergie N. Prognosticating patients with necrotising otitis externa based on response to treatment. Ann R Coll Surg Engl 2021; 103:285-290. [PMID: 33682472 DOI: 10.1308/rcsann.2020.7133] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION Necrotising otitis externa (NOE) is a severe infection of the temporal bone. The traditional severity based staging system does not fully prognosticate all patients with NOE. We hypothesise that a patient response staging system would more accurately capture the disease process and guide prognosis. METHODS We carried out a retrospective notes review of patients diagnosed with NOE from January 2017 to December 2018 in a regional tertiary referral centre. Patient outcomes from our proposed patient response staging system were compared to a modified previously published severity based Gleeson staging system with patients requiring prolonged treatment classified as having a poor outcome. RESULTS A total of 34 patients were treated for NOE. The majority were male (n=24) and had diabetes (n=25). Patients with the most severe Gleeson staging did not have the worst outcome. Daily delay in resolution of otorrhoea was associated with an increased need for more than six weeks of treatment. Rapid responders are patients who had resolution of otalgia, otorrhoea and C-reactive protein normalisation within 14 days, and all were cured following standard 6 weeks of treatment. CONCLUSIONS The Gleeson staging system was valuable in assessing the extent of disease and all early Gleeson staged patients had good outcomes. However, patients with higher severity staging on the Gleeson system did not necessarily require prolonged treatment. There is a role for a joint approach in staging patients based on both modified Gleeson and treatment response, which would subsequently guide prognosis, duration of treatment and early diagnosis of potential fungal NOE.
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Affiliation(s)
- W S Cho
- Nottingham University Hospitals NHS Trust, UK
| | - Q Bonduelle
- Nottingham University Hospitals NHS Trust, UK
| | - A Ghasemi
- Nottingham University Hospitals NHS Trust, UK
| | - V Baskaran
- Nottingham University Hospitals NHS Trust, UK
| | - R O'Connor
- Nottingham University Hospitals NHS Trust, UK
| | - J Shah
- Nottingham University Hospitals NHS Trust, UK
| | | | - N Fergie
- Nottingham University Hospitals NHS Trust, UK
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Yoo DH, Cho YD, Lee HS, Kim SH, Jang D, Lee SH, Cho WS, Kang HS, Kim JE, Han MH. Suspected Metallic Embolization Distal to Coiled Intracranial Aneurysms Detectable by Susceptibility-Weighted MR Imaging. AJNR Am J Neuroradiol 2020; 41:619-623. [PMID: 32273325 PMCID: PMC7144647 DOI: 10.3174/ajnr.a6506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Accepted: 02/19/2020] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE After endovascular coiling of intracranial aneurysms, round dark parenchymal lesions believed to be particulate metal are sometimes encountered in MR imaging studies of the brain. We used SWI to assess the frequency of such occurrences, in addition to exploring likely causes and clinical implications. MATERIALS AND METHODS We reviewed 700 MR imaging studies performed between September 2018 and March 2019 at our institution as follow-up monitoring of coiled intracranial aneurysms. Any sizeable (>5 mm) rounded dark-signal lesions encountered were presumed to be metallic. The magnitudes and locations of such lesions were recorded. In patients with these lesions, pertinent procedural documentation was screened for devices used, including coils, microcatheters, microguidewires, and stents. Medical records were also examined to determine whether any related symptoms ensued. RESULTS Twenty patients (2.8%) exhibited a total of 25 lesions on SWI. Diameters ranged from 5 to 11 mm (median, 8 mm). All except 2 lesions were located in brain regions downstream from aneurysms, but all lesions occupied vascular territories of vessels used to place guiding catheters. Other than the Synchro 14, which was routinely deployed, no device was regularly used in patients with SWI-detectable lesions; and none of the affected patients developed focal neurologic symptoms as a consequence. CONCLUSIONS Although the origins remain unclear, distal embolization of particulate metal distal to coiled cerebral aneurysms is occasionally observed on follow-up MR imaging studies. Such lesions, however, seem to have no apparent clinical impact.
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Affiliation(s)
- D H Yoo
- From the Departments of Radiology (D.H.Y., Y.D.C., H.S.L., S.H.K., M.H.H.), and
| | - Y D Cho
- From the Departments of Radiology (D.H.Y., Y.D.C., H.S.L., S.H.K., M.H.H.), and
| | - H S Lee
- From the Departments of Radiology (D.H.Y., Y.D.C., H.S.L., S.H.K., M.H.H.), and
| | - S H Kim
- From the Departments of Radiology (D.H.Y., Y.D.C., H.S.L., S.H.K., M.H.H.), and
| | - D Jang
- Neurosurgery (D.J., S.H.L., W.-S.C., H.-S.K., J.E.K.), Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - S H Lee
- Neurosurgery (D.J., S.H.L., W.-S.C., H.-S.K., J.E.K.), Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - W-S Cho
- Neurosurgery (D.J., S.H.L., W.-S.C., H.-S.K., J.E.K.), Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - H-S Kang
- Neurosurgery (D.J., S.H.L., W.-S.C., H.-S.K., J.E.K.), Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - J E Kim
- Neurosurgery (D.J., S.H.L., W.-S.C., H.-S.K., J.E.K.), Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - M H Han
- From the Departments of Radiology (D.H.Y., Y.D.C., H.S.L., S.H.K., M.H.H.), and
- Department of Neurosurgery and Radiology (M.H.H.), Veterans Health Service Medical Center, Seoul, Korea
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Bonduelle Q, Cho WS, Elloy MD. The paediatric tracheostomy part-task trainer: low fidelity, low cost. Ann R Coll Surg Engl 2019; 102:72-73. [PMID: 31845820 DOI: 10.1308/rcsann.2019.0166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
- Q Bonduelle
- Nottingham University Hospitals NHS Trust, Queen's Medical Centre, Nottingham, UK
| | - W S Cho
- Otorhinolaryngology, Nottingham University Hospitals NHS Trust, Queen's Medical Centre, Nottingham, UK
| | - M D Elloy
- Otorhinolaryngology, University Hospitals of Leicester NHS Trust, Leicester, UK
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Choi HJ, Sohn CH, You SH, Yoo RE, Kang KM, Yun TJ, Choi SH, Kim JH, Cho WS, Kim JE. Can Arterial Spin-Labeling with Multiple Postlabeling Delays Predict Cerebrovascular Reserve? AJNR Am J Neuroradiol 2017; 39:84-90. [PMID: 29146719 DOI: 10.3174/ajnr.a5439] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Accepted: 09/04/2017] [Indexed: 01/15/2023]
Abstract
BACKGROUND AND PURPOSE The effect of delayed transit time is the main source of error in the quantitative measurement of CBF in arterial spin-labeling. In the present study, we evaluated the usefulness of the transit time-corrected CBF and arterial transit time delay from multiple postlabeling delays arterial spin-labeling compared with basal/acetazolamide stress technetium Tc99m-hexamethylpropylene amineoxime (Tc99m-HMPAO) SPECT in predicting impairment in the cerebrovascular reserve. MATERIALS AND METHODS Transit time-corrected CBF maps and arterial transit time maps were acquired in 30 consecutive patients with unilateral ICA or MCA steno-occlusive disease (severe stenosis or occlusion). Internal carotid artery territory-based ROIs were applied to both perfusion maps. Additionally, impairment in the cerebrovascular reserve was evaluated according to both qualitative and quantitative analyses of the ROIs on basal/acetazolamide stress Tc99m-HMPAO SPECT using a previously described method. The area under the receiver operating characteristic curve was used to evaluate the diagnostic accuracy of arterial spin-labeling in depicting impairment of the cerebrovascular reserve. The correlation between arterial spin-labeling and cerebrovascular reserve was evaluated. RESULTS The affected hemisphere had a decreased transit time-corrected CBF and increased arterial transit time compared with the corresponding values of the contralateral normal hemisphere, which were statistically significant (P < .001). The percentage change of transit time-corrected CBF and the percentage change of arterial transit time were independently differentiating variables (P < .001) for predicting cerebrovascular reserve impairment. The correlation coefficient between the arterial transit time and cerebrovascular reserve index ratio was -0.511. CONCLUSIONS Our results demonstrate that the transit time-corrected CBF and arterial transit time based on arterial spin-labeling perfusion MR imaging can predict cerebrovascular reserve impairment.
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Affiliation(s)
- H J Choi
- From the Department of Radiology (H.J.C.), CHA Bundang Medical Center, CHA University, Seongnam, Korea
| | - C-H Sohn
- Departments of Radiology (C.-H.S., R.-E.Y., K.M.K., T.J.Y., S.H.C., J.-H.K.)
| | - S-H You
- Department of Radiology (S.-H.Y.), Korea University Hospital, Seoul, Korea
| | - R-E Yoo
- Departments of Radiology (C.-H.S., R.-E.Y., K.M.K., T.J.Y., S.H.C., J.-H.K.)
| | - K M Kang
- Departments of Radiology (C.-H.S., R.-E.Y., K.M.K., T.J.Y., S.H.C., J.-H.K.)
| | - T J Yun
- Departments of Radiology (C.-H.S., R.-E.Y., K.M.K., T.J.Y., S.H.C., J.-H.K.)
| | - S H Choi
- Departments of Radiology (C.-H.S., R.-E.Y., K.M.K., T.J.Y., S.H.C., J.-H.K.)
| | - J-H Kim
- Departments of Radiology (C.-H.S., R.-E.Y., K.M.K., T.J.Y., S.H.C., J.-H.K.)
| | - W-S Cho
- Neurosurgery (W.-S.C., J.E.K.), Seoul National University Hospital, Seoul, Korea
| | - J E Kim
- Neurosurgery (W.-S.C., J.E.K.), Seoul National University Hospital, Seoul, Korea
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Choi HH, Ha EJ, Lee JJ, Yoo DH, Cho WS, Kim JE, Cho YD, Han MH, Kang HS. Comparison of Clinical Outcomes of Intracranial Aneurysms: Procedural Rupture versus Spontaneous Rupture. AJNR Am J Neuroradiol 2017; 38:2126-2130. [PMID: 28860217 DOI: 10.3174/ajnr.a5344] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Accepted: 06/09/2017] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Procedural rupture of an intracranial aneurysm is a devastating complication in endovascular treatment. The purpose of this study was to evaluate the clinical outcomes of patients with procedural rupture of unruptured saccular intracranial aneurysms compared with those with spontaneously ruptured aneurysms. MATERIALS AND METHODS A retrospective review was performed for 1340 patients with 1595 unruptured saccular intracranial aneurysms that underwent endovascular coil embolization between February 2010 and December 2014. The clinical outcomes of patients with procedural rupture of unruptured saccular intracranial aneurysms were compared with those of 198 patients presenting with spontaneously ruptured aneurysms. RESULTS In this series, procedural rupture developed in 19 patients (1.4% per patient and 1.2% per aneurysm), and the morbidity related to procedural rupture was 26.3% (95% confidence interval, 8.5%-61.4%) with no mortality. Hunt and Hess scale grades and hospitalization days of patients with procedural rupture were equivalent to those of patients presenting with spontaneous aneurysm rupture. Subsequent treatment procedures after hemorrhage (including lumbar drainage, extraventricular drainage, decompressive craniectomy, and permanent shunt) showed no difference between the 2 groups. The hemorrhage volumes were smaller in the procedural-rupture group (P = .03), and the endovascular vasospasm therapies tended to be more frequently required in the spontaneous aneurysm-rupture group (P = .08). At postictus 6 months, the proportion of modified Rankin Scale scores of ≥2 were lower in the procedural-rupture group (5.3% versus 26.8%, P = .049). In multivariate analysis, spontaneous aneurysm rupture was a significant risk factor for worse clinical outcome (OR = 14.9; 95% CI, 1.2-193.1; P = .039). CONCLUSIONS This study showed better clinical outcomes in the procedural-rupture group. Even though there is a potential chance of aneurysm rupture during treatment, the clinical outcomes after procedural bleeds seem to be more favorable than those of spontaneous rupture.
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Affiliation(s)
- H H Choi
- From the Departments of Neurosurgery (H.H.C.), Dongguk University College of Medicine, Dongguk University Hospital, Ilsan, Korea
| | - E J Ha
- Departments of Neurosurgery (E.J.H., W.-S.C., J.E.K., H.-S.K.)
| | - J J Lee
- Radiology (J.J.L., D.H.Y., Y.D.C, M.H.H.), Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Korea
| | - D H Yoo
- Radiology (J.J.L., D.H.Y., Y.D.C, M.H.H.), Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Korea
| | - W-S Cho
- Departments of Neurosurgery (E.J.H., W.-S.C., J.E.K., H.-S.K.)
| | - J E Kim
- Departments of Neurosurgery (E.J.H., W.-S.C., J.E.K., H.-S.K.)
| | - Y D Cho
- Radiology (J.J.L., D.H.Y., Y.D.C, M.H.H.), Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Korea
| | - M H Han
- Radiology (J.J.L., D.H.Y., Y.D.C, M.H.H.), Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Korea
| | - H-S Kang
- Departments of Neurosurgery (E.J.H., W.-S.C., J.E.K., H.-S.K.)
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Jeon JP, Cho YD, Yoo DH, Moon J, Lee J, Cho WS, Kang HS, Kim JE, Han MH. Risk Factor Analysis of Recanalization Timing in Coiled Aneurysms: Early versus Late Recanalization. AJNR Am J Neuroradiol 2017; 38:1765-1770. [PMID: 28619836 DOI: 10.3174/ajnr.a5267] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Accepted: 04/10/2017] [Indexed: 12/24/2022]
Abstract
BACKGROUND AND PURPOSE Long-term documentation of anatomic and angiographic characteristics pertaining to the timing of recanalization in coiled aneurysms has been insufficient. Our intent was to analyze and compare early and late-phase recanalization after coiling, identifying respective risk factors. MATERIALS AND METHODS A total of 870 coiled saccular aneurysms were monitored for extended periods (mean, 30.8 ± 8.3 months). Medical records and radiologic data were also reviewed, stratifying patients as either early (n = 128) or late (n = 52) recanalization or as complete occlusion (n = 690). Early recanalization was equated with confirmed recanalization within 6 months after the procedure, whereas late recanalization was defined as verifiable recanalization after imaging confirmation of complete occlusion at 6 months. A multinomial regression model served to assess potential risk factors, the reference point being early recanalization. RESULTS Posterior circulation (P = .009), subarachnoid hemorrhage at presentation (P = .011), second attempt for recanalized aneurysm (P < .001), and aneurysm size >7 mm (P < .001) emerged as variables significantly linked with early recanalization (versus complete occlusion). Late (versus early) recanalization corresponded with aneurysms ≤7 mm (P = .013), and in a separate subanalysis of lesions ≤7 mm, aneurysms 4-7 mm showed a significant predilection for late recanalization (P = .008). However, the propensity for complete occlusion in smaller lesions (≤7 mm) increased as the size diminished. CONCLUSIONS Although long-term complete occlusion after coiling was more likely in aneurysms ≤7 mm, such lesions were more prone to late (versus early) recanalization, particularly those of 4-7 mm in size. Long-term follow-up imaging is thus appropriate in aneurysms >4 mm to detect late recanalization of those formerly demonstrating complete occlusion.
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Affiliation(s)
- J P Jeon
- From the Department of Neurosurgery (J.P.J.), Hallym University College of Medicine, Chuncheon, Korea
| | - Y D Cho
- Departments of Radiology (Y.D.C., D.H.Y., J.M.)
| | - D H Yoo
- Departments of Radiology (Y.D.C., D.H.Y., J.M.)
| | - J Moon
- Departments of Radiology (Y.D.C., D.H.Y., J.M.)
| | - J Lee
- Neurosurgery (J.L., W.-S.C., H.-S.K., J.E.K., M.H.H.), Seoul National University College of Medicine, Seoul, Korea
| | - W-S Cho
- Neurosurgery (J.L., W.-S.C., H.-S.K., J.E.K., M.H.H.), Seoul National University College of Medicine, Seoul, Korea
| | - H-S Kang
- Neurosurgery (J.L., W.-S.C., H.-S.K., J.E.K., M.H.H.), Seoul National University College of Medicine, Seoul, Korea
| | - J E Kim
- Neurosurgery (J.L., W.-S.C., H.-S.K., J.E.K., M.H.H.), Seoul National University College of Medicine, Seoul, Korea
| | - M H Han
- Neurosurgery (J.L., W.-S.C., H.-S.K., J.E.K., M.H.H.), Seoul National University College of Medicine, Seoul, Korea
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Affiliation(s)
- W S Cho
- University Hospitals of Leicester NHS Trust , UK
| | - N Ibrahim
- University Hospitals of Leicester NHS Trust , UK
| | - S Varma
- University Hospitals of Leicester NHS Trust , UK
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Ha EJ, Cho WS, Kim JE, Cho YD, Choi HH, Kim T, Bang JS, Hwang G, Kwon OK, Oh CW, Han MH, Kang HS. Prophylactic Antiplatelet Medication in Endovascular Treatment of Intracranial Aneurysms: Low-Dose Prasugrel versus Clopidogrel. AJNR Am J Neuroradiol 2016; 37:2060-2065. [PMID: 27390320 DOI: 10.3174/ajnr.a4864] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Accepted: 05/09/2016] [Indexed: 12/21/2022]
Abstract
BACKGROUND AND PURPOSE Prophylactic antiplatelet medication is beneficial in decreasing thromboembolic complications during endovascular treatment of unruptured intracranial aneurysms. The efficacy may be limited by variability of individual response to antiplatelet medication, especially clopidogrel. We compared the efficacy of 2 antiplatelet medications, low-dose prasugrel and clopidogrel, in patients undergoing endovascular treatment of unruptured aneurysms. MATERIALS AND METHODS From November 2014 to July 2015, 194 patients with a total of 222 unruptured aneurysms underwent endovascular treatment at a single institution. Laboratory and clinical data from the prospectively maintained registry were used in this study. Antiplatelet medication was given the day before endovascular treatment (prasugrel 20 mg or 30 mg or clopidogrel 300 mg). Response to the antiplatelet medication was measured by the VerifyNow system. Periprocedural adverse event rates between the 2 groups were compared. RESULTS There were no significant differences in the baseline characteristics of patients and aneurysms between the 2 groups. The P2Y12 reaction unit values were lower (clopidogrel group versus prasugrel group, 242.7 ± 69.8 vs 125.7 ± 79.4; P < .0001) and percentage inhibition values were higher (22.1% ± 19.7% vs 60.2 ± 24.7%; P < .0001) in the prasugrel group. There were no thromboembolic events, but there was 1 procedural bleed in each group, without any clinical consequences. CONCLUSIONS The prasugrel group showed more effective and consistent platelet inhibition. We may omit the antiplatelet response assay with the low-dose prasugrel premedication before the endovascular treatment of patients with unruptured aneurysms. Further study is required to determine whether there is benefit of this strategy regarding clinical outcome.
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Affiliation(s)
- E J Ha
- From the Departments of Neurosurgery (E.J.H., W.S.C., J.E.K., H.S.K.)
| | - W S Cho
- From the Departments of Neurosurgery (E.J.H., W.S.C., J.E.K., H.S.K.)
| | - J E Kim
- From the Departments of Neurosurgery (E.J.H., W.S.C., J.E.K., H.S.K.)
| | - Y D Cho
- Radiology (Y.D.C., M.H.H.), Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Korea
| | - H H Choi
- Department of Neurosurgery (H.H.C.), Dongguk University Ilsan Hospital, Gyeonggi, Korea
| | - T Kim
- Department of Neurosurgery (T.K., J.S.B., G.H., O.K.K., C.W.O.), Seoul National University Bundang Hospital, Gyeonggi, Korea
| | - J S Bang
- Department of Neurosurgery (T.K., J.S.B., G.H., O.K.K., C.W.O.), Seoul National University Bundang Hospital, Gyeonggi, Korea
| | - G Hwang
- Department of Neurosurgery (T.K., J.S.B., G.H., O.K.K., C.W.O.), Seoul National University Bundang Hospital, Gyeonggi, Korea
| | - O K Kwon
- Department of Neurosurgery (T.K., J.S.B., G.H., O.K.K., C.W.O.), Seoul National University Bundang Hospital, Gyeonggi, Korea
| | - C W Oh
- Department of Neurosurgery (T.K., J.S.B., G.H., O.K.K., C.W.O.), Seoul National University Bundang Hospital, Gyeonggi, Korea
| | - M H Han
- Radiology (Y.D.C., M.H.H.), Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Korea
| | - H S Kang
- From the Departments of Neurosurgery (E.J.H., W.S.C., J.E.K., H.S.K.)
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Cho WS, Chae C. Expression of Nitric Oxide Synthase 2 and Cyclooxygenase-2 in Swine Experimentally Infected with Actinobacillus pleuropneumoniae. Vet Pathol 2016; 41:666-72. [PMID: 15557075 DOI: 10.1354/vp.41-6-666] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [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: 11/19/2022]
Abstract
The expression of inflammatory mediators was examined in pigs experimentally infected with Actinobacillus pleuropneumoniae. The activity of nitric oxide synthase 2 (NOS2) and cyclooxygenase-2 (COX-2) was determined by measuring nitric oxide (NO) and prostaglandin E2 (PGE2) in bronchoalveolar lavage fluid in response to A. pleuropneumoniae in vivo. By in situ hybridization and immunohistochemistry, both NOS2 and COX-2 enzymes were detected in neutrophils and macrophages that had infiltrated into alveolar spaces. The sharp increase in PGE2 concentration preceded the increase in the concentrations of NO. NO levels were highly correlated with PGE2 level ( rs = 0.7218, P < 0.05). The NO levels were positively correlated with lung lesion scores ( rs = 0.9087, P < 0.05) until 24 hours postinoculation (hpi) as were the lung lesion scores and PGE2 levels ( rs = 0.925, P < 0.01). High levels of PGE2 produced by COX-2 are generated in early infection (6 hpi). However, in later stages of infection (12–36 hpi), there is participation of NO and PGE2 accompanied by coinduction of both NOS2 and COX-2.
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Affiliation(s)
- W-S Cho
- Department of Veterinary Pathology, College of Veterinary Medicine, Seoul National University, San 56-1, Shillim-Dong, Kwanak-Gu 151-742, Seoul, Republic of Korea
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Jeon JP, Cho YD, Rhim JK, Yoo DH, Cho WS, Kang HS, Kim JE, Han MH. Fate of Coiled Aneurysms with Minor Recanalization at 6 Months: Rate of Progression to Further Recanalization and Related Risk Factors. AJNR Am J Neuroradiol 2016; 37:1490-5. [PMID: 26965468 DOI: 10.3174/ajnr.a4763] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Accepted: 01/28/2016] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Minor recanalization in coiled aneurysms may remain stable with time or may progress to major recanalization. Our aim was to monitor the aneurysms displaying minor recanalization in imaging studies at 6 months, gauging major recanalization rates and related risk factors through extended follow-up. MATERIALS AND METHODS Sixty-five aneurysms (in 65 patients) showing minor recanalization in follow-up imaging at 6 months were reviewed retrospectively. Medical records and radiologic data accruing during extended monitoring (mean, 24.8 ± 8.2 months) were assessed. Univariate and multivariate analyses were conducted to identify risk factors for progression from minor-to-major recanalization. RESULTS Progression to major recanalization was observed in 24 (36.9%) of the initially qualifying aneurysms during a follow-up of 112.5 aneurysm-years, for an annual rate of 17.84% per aneurysm-year. Progression was determined chronologically as follows: 14 (58.3%) at 6 months, 8 (33.3%) at 18 months, and 2 (8.4%) at 30 months. Stent deployment significantly decreased the occurrence of major recanalization (OR = 0.22, P = .03), whereas antiplatelet therapy (OR = 0.82, P = .75), posterior location (OR = 0.24, P = .20), and second coiling for recanalized aneurysms (OR = 0.96, P = .96) were unrelated. CONCLUSIONS Our analysis determined a 36.9% rate of major recanalization during a follow-up of 112.5 aneurysm-years in coiled aneurysms showing minor recanalization at 6 months. Stent deployment alone conferred a protective effect, preventing further recanalization without additional treatment. Given the fair probability of late major recanalization, aneurysms showing minor recanalization at 6 months should be monitored diligently, particularly in the absence of stent placement.
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Affiliation(s)
- J P Jeon
- From the Department of Neurosurgery (J.P.J.), Hallym University College of Medicine, Chuncheon, Korea
| | - Y D Cho
- Departments of Radiology (Y.D.C., J.K.R., D.H.Y., M.H.H.)
| | - J K Rhim
- Departments of Radiology (Y.D.C., J.K.R., D.H.Y., M.H.H.)
| | - D H Yoo
- Departments of Radiology (Y.D.C., J.K.R., D.H.Y., M.H.H.)
| | - W-S Cho
- Neurosurgery (W.s.C., H.-S.K., J.E.K.), Seoul National University College of Medicine, Seoul, Korea
| | - H-S Kang
- Neurosurgery (W.s.C., H.-S.K., J.E.K.), Seoul National University College of Medicine, Seoul, Korea
| | - J E Kim
- Neurosurgery (W.s.C., H.-S.K., J.E.K.), Seoul National University College of Medicine, Seoul, Korea
| | - M H Han
- Departments of Radiology (Y.D.C., J.K.R., D.H.Y., M.H.H.)
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Jeon JP, Cho YD, Rhim JK, Yoo DH, Kang HS, Kim JE, Cho WS, Han MH. Do Contrast-Fill Patterns Immediately After Coil Embolization of Small Saccular Aneurysms Impact Long-Term Results? Clin Neuroradiol 2015; 27:205-211. [PMID: 26608741 DOI: 10.1007/s00062-015-0485-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Accepted: 11/12/2015] [Indexed: 11/30/2022]
Abstract
PURPOSE It is generally accepted that filling of a saccular aneurysm with contrast immediately after coil embolization predisposes to later recanalization. However, not all such scenarios evolve similarly over time. We investigated outcomes of small (≤ 7 mm) aneurysms with contrast-filled sacs immediately after coil embolization, evaluating the impact of pattern and degree of filling on subsequent recanalization. METHODS Between January, 2008 and December, 2010, 186 small (≤ 7 mm) saccular aneurysms that retained contrast after coil embolization accrued for this study. Lesions were categorized by pattern (eccentric vs. concentric) and degree of filling on working projections. Clinical and morphologic factors were also analyzed to assess impact on subsequent recanalization. Morphologic outcomes at 6 months or more were assessed. RESULTS In 93.5 % (174/186) of aneurysms with visible contrast retention, complete occlusion was evident on follow-up imaging studies at 6 months. Multiple logistic regression analysis indicated that eccentric (vs. concentric) contrast filling carried greater risk of subsequent recanalization (p = 0.020). Stent placement and progressive occlusion were also linked, falling short of statistical significance (p = 0.089). Of 166 progressively occluded aneurysms followed for more than 12 months (mean, 30.8 ± 7.3 months), 158 (95.2 %) exhibited stable occlusion. CONCLUSION Small (≤ 7 mm) aneurysms that retain contrast immediately after coil embolization are more likely to become completely occluded over time through progressive thrombosis. However, an eccentric fill pattern may predispose to recanalization.
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Affiliation(s)
- J P Jeon
- Department of Neurosurgery, Hallym University College of Medicine, Chuncheon, Korea
| | - Y D Cho
- Department of Radiology, Seoul National University Hospital, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu Seoul, Seoul 110-744, Seoul, Korea.
| | - J K Rhim
- Department of Radiology, Seoul National University Hospital, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu Seoul, Seoul 110-744, Seoul, Korea
| | - D H Yoo
- Department of Radiology, Seoul National University Hospital, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu Seoul, Seoul 110-744, Seoul, Korea
| | - H-S Kang
- Department of Neurosurgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - J E Kim
- Department of Neurosurgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - W S Cho
- Department of Neurosurgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - M H Han
- Department of Radiology, Seoul National University Hospital, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu Seoul, Seoul 110-744, Seoul, Korea.,Department of Neurosurgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
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Son Y, Heo K, Bae MJ, Lee CG, Cho WS, Kim SD, Yang K, Shin IS, Lee MY, Kim JS. Injury to the blood-testis barrier after low-dose-rate chronic radiation exposure in mice. Radiat Prot Dosimetry 2015; 167:316-320. [PMID: 25948832 DOI: 10.1093/rpd/ncv270] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Exposure to ionising radiation induces male infertility, accompanied by increasing permeability of the blood-testis barrier. However, the effect on male fertility by low-dose-rate chronic radiation has not been investigated. In this study, the effects of low-dose-rate chronic radiation on male mice were investigated by measuring the levels of tight-junction-associated proteins (ZO-1 and occludin-1), Niemann-Pick disease type 2 protein (NPC-2) and antisperm antibody (AsAb) in serum. BALB/c mice were exposed to low-dose-rate radiation (3.49 mGy h(-1)) for total exposures of 0.02 (6 h), 0.17 (2 d) and 1.7 Gy (21 d). Based on histological examination, the diameter and epithelial depth of seminiferous tubules were significantly decreased in 1.7-Gy-irradiated mice. Compared with those of the non-irradiated group, 1.7-Gy-irradiated mice showed significantly decreased ZO-1, occludin-1 and NPC-2 protein levels, accompanied with increased serum AsAb levels. These results suggest potential blood-testis barrier injury and immune infertility in male mice exposed to low-dose-rate chronic radiation.
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Affiliation(s)
- Y Son
- Research Center, Dongnam Institute of Radiological and Medical Sciences (DIRAMS), Jwadong-gil 40, Gijang-gun, Busan 619-953, South Korea
| | - K Heo
- Research Center, Dongnam Institute of Radiological and Medical Sciences (DIRAMS), Jwadong-gil 40, Gijang-gun, Busan 619-953, South Korea
| | - M J Bae
- Research Center, Dongnam Institute of Radiological and Medical Sciences (DIRAMS), Jwadong-gil 40, Gijang-gun, Busan 619-953, South Korea
| | - C G Lee
- Research Center, Dongnam Institute of Radiological and Medical Sciences (DIRAMS), Jwadong-gil 40, Gijang-gun, Busan 619-953, South Korea
| | - W S Cho
- Research Center, Dongnam Institute of Radiological and Medical Sciences (DIRAMS), Jwadong-gil 40, Gijang-gun, Busan 619-953, South Korea
| | - S D Kim
- Research Center, Dongnam Institute of Radiological and Medical Sciences (DIRAMS), Jwadong-gil 40, Gijang-gun, Busan 619-953, South Korea
| | - K Yang
- Research Center, Dongnam Institute of Radiological and Medical Sciences (DIRAMS), Jwadong-gil 40, Gijang-gun, Busan 619-953, South Korea
| | - I S Shin
- College of Veterinary Medicine, Chonnam National University, Gwangju, South Korea
| | - M Y Lee
- College of Pharmacy, Kyungpook National University, Daegu, South Korea
| | - J S Kim
- Research Center, Dongnam Institute of Radiological and Medical Sciences (DIRAMS), Jwadong-gil 40, Gijang-gun, Busan 619-953, South Korea College of Veterinary Medicine, Chonnam National University, Gwangju, South Korea
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Won SG, Cho WS, Lee JE, Park KH, Ra CS. Data Build-up for the Construction of Korean Specific Greenhouse Gas Emission Inventory in Livestock Categories. Asian-Australas J Anim Sci 2014; 27:439-46. [PMID: 25049972 PMCID: PMC4093265 DOI: 10.5713/ajas.2013.13401] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/02/2013] [Revised: 12/23/2013] [Accepted: 08/24/2013] [Indexed: 11/27/2022]
Abstract
Many studies on methane (CH4) and nitrous oxide (N2O) emissions from livestock industries have revealed that livestock production directly contributes to greenhouse gas (GHG) emissions through enteric fermentation and manure management, which causes negative impacts on animal environment sustainability. In the present study, three essential values for GHG emission were measured; i.e., i) maximum CH4 producing capacity at mesophilic temperature (37°C) from anaerobically stored manure in livestock category (B0,KM, Korean livestock manure for B0), ii) EF3(s) value representing an emission factor for direct N2O emissions from manure management system S in the country, kg N2O-N kg N−1, at mesophilic (37°C) and thermophilic (55°C) temperatures, and iii) Nex(T) emissions showing annual N excretion for livestock category T, kg N animal−1 yr−1, from different livestock manure. Static incubation with and without aeration was performed to obtain the N2O and CH4 emissions from each sample, respectively. Chemical compositions of pre- and post-incubated manure were analyzed. Contents of total solids (% TS) and volatile solid (% VS), and the ratio of carbon to nitrogen (C/N) decrease significantly in all the samples by C-containing biogas generation, whereas moisture content (%) and pH increased after incubation. A big difference of total nitrogen content was not observed in pre- and post-incubation during CH4 and N2O emissions. CH4 emissions (g CH4 kg VS−1) from all the three manures (sows, layers and Korean cattle) were different and high C/N ratio resulted in high CH4 emission. Similarly, N2O emission was found to be affected by % VS, pH, and temperature. The B0,KM values for sows, layers, and Korean cattle obtained at 37°C are 0.0579, 0.0006, and 0.0828 m3 CH4 kg VS−1, respectively, which are much less than the default values in IPCC guideline (GL) except the value from Korean cattle. For sows and Korean cattle, Nex(T) values of 7.67 and 28.19 kg N yr−1, respectively, are 2.5 fold less than those values in IPCC GL as well. However, Nex(T) value of layers 0.63 kg N yr−1 is very similar to the default value of 0.6 kg N yr−1 in IPCC GLs for National greenhouse gas inventories for countries such as South Korea/Asia. The EF3(s) value obtained at 37°C and 55°C were found to be far less than the default value.
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Ahn JH, Cho YD, Kang HS, Kim JE, Cho WS, Jung SC, Kim CH, Han MH. Endovascular treatment of ophthalmic artery aneurysms: assessing balloon test occlusion and preservation of vision in coil embolization. AJNR Am J Neuroradiol 2014; 35:2146-52. [PMID: 24970549 DOI: 10.3174/ajnr.a3999] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
BACKGROUND AND PURPOSE ICA-ophthalmic artery aneurysms have unique configurations corresponding to relative risks of ophthalmologic morbidities. Presented herein are clinical and radiologic outcomes of coil embolization in ophthalmic artery aneurysms. MATERIALS AND METHODS From January 2003 to September 2013, endovascular coiling was performed in 43 consecutive patients with ophthalmic artery aneurysms, each classified by the degree to which the ophthalmic artery was incorporated by the aneurysm and the contiguity between the ophthalmic artery entry and parent ICA. Clinical and radiologic outcomes of this approach were investigated, including the technical aspects of treatment and the efficacy of balloon test occlusion. RESULTS Among 14 patients (32.6%, all ophthalmic artery types) undergoing balloon test occlusion before endovascular coiling, patent collaterals between the external carotid artery and ophthalmic artery were demonstrated in 12 (85.7%) and complete compromise of the ophthalmic artery (without affecting vision) occurred in 4 patients during coiling. Steam-shaped S-configured (67.9%) or straight microcatheters (17.8%) facilitated aneurysm selection in most of the superiorly directed ophthalmic artery aneurysms (n = 28), and steam-shaped pigtail microcatheters (85.7%) were useful in medially directed aneurysms (n = 14). Balloon protection (n = 22) was generally used to facilitate coiling, or a stent (n = 9) was alternatively deployed. Satisfactory aneurysmal occlusion was achieved through coil embolization in 37 lesions (86.1%). During follow-up of 35 patients (mean interval, 12.9 ± 9.4 months), only 1 instance (2.9%) of major recanalization was observed. CONCLUSIONS If one tailors technical strategies, ophthalmic artery aneurysms are amenable to safe and effective endovascular coil embolization, which tends to be stable in follow-up. Balloon test occlusion may be helpful in devising treatment strategies to preserve vision when coiling ophthalmic artery aneurysms (especially those incorporating an ophthalmic artery origin) is done.
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Affiliation(s)
- J H Ahn
- From the Department of Neurosurgery (J.H.A.), Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang, Korea
| | - Y D Cho
- Departments of Radiology (Y.D.C., M.H.H.)
| | - H-S Kang
- Neurosurgery (H.-S.K., J.E.K., W.-S.C., M.H.H.), Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - J E Kim
- Neurosurgery (H.-S.K., J.E.K., W.-S.C., M.H.H.), Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - W-S Cho
- Neurosurgery (H.-S.K., J.E.K., W.-S.C., M.H.H.), Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - S C Jung
- Department of Radiology (S.C.J.), Asan Medical Center, Ulsan University College of Medicine, Seoul, Korea
| | - C H Kim
- Department of Neurology (C.H.K.), Stroke Center, Myongji Hospital, Goyang, Korea
| | - M H Han
- Departments of Radiology (Y.D.C., M.H.H.) Neurosurgery (H.-S.K., J.E.K., W.-S.C., M.H.H.), Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
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Abstract
Teratomas are germ cell tumours commonly found in the sacrococcygeal region, ovary, testicle or, infrequently, the mediastinum. In very rare circumstances, these tumours are found in the neck. This case represents a thymic teratoma presenting as what appeared to be an intrathyroid lesion. This has not been described previously and demonstrates an unusual presentation of a neck lump necessitating two operations and a multidisciplinary approach for management. We would also like to highlight that while patients undergo imaging to guide surgery, the surgeon must always be prepared for the unexpected and recognise situations where the operation should be converted to an exploratory procedure instead of full resection. Often, combined surgical care is the best option for difficult congenital cases.
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Affiliation(s)
- W S Cho
- University Hospitals of Leicester NHS Trust, UK
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Cho WS, Duffin R, Bradley M, Megson IL, Macnee W, Howie SEM, Donaldson K. NiO and Co3O4 nanoparticles induce lung DTH-like responses and alveolar lipoproteinosis. Eur Respir J 2011; 39:546-57. [PMID: 21828028 DOI: 10.1183/09031936.00047111] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Lung exposure to metal oxide nanoparticles (NPs) comprising soluble metal haptens may produce T-helper cell type 1 (Th1)- and Th17-associated delayed-type hypersensitivity (DTH) responses and pulmonary alveolar proteinosis (PAP). In order to study this, haptenic metal oxide NPs (NiO, Co(3)O(4), Cr(2)O(3) and CuO) were instilled into the lungs of female Wistar rats, and the immunoinflammatory responses were assessed at 24 h and 4 weeks post-instillation. Primary culture of alveolar macrophages from Wistar rats was used to evaluate the effect of the NPs on the ability to clear surfactant. NiO NPs induced chronic interstitial inflammation and pro-inflammatory Th1 and Th17 immune responses characterised by increases in the cytokines monocyte chemotactic protein (MCP)-1/CCL2, interleukin (IL)-12 p40, interferon-γ and IL-17A, whilst similar pathological responses induced by Co(3)O(4) NPs were associated with increases in MCP-1/CCL2 and IL-12 p40. However, neither Cr(2)O(3) nor CuO NPs elicited immunoinflammatory reactions. PAP was induced by both NiO and Co(3)O(4) NPs during the chronic phase. PAP was associated with over-production of surfactant by proliferation of type II cells and impaired clearance of surfactant by macrophages. These findings have implications for the risk management of occupational NP exposure and provide evidence that haptenic metal oxide NPs can induce chronic progressive lung immune responses via a DTH-like mechanism.
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Affiliation(s)
- W-S Cho
- ELEGI/Colt Laboratory, Centre for Inflammation Research, University of Edinburgh, Edinburgh, UK
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Cho WS, Kang HS, Kim JE, Kwon OK, Oh CW, Son YJ, Know BJ, Jung C, Hang MH. Intra-arterial nimodipine infusion for cerebral vasospasm in patients with aneurysmal subarachnoid hemorrhage. Interv Neuroradiol 2011; 17:169-78. [PMID: 21696654 DOI: 10.1177/159101991101700205] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2010] [Accepted: 01/31/2011] [Indexed: 11/15/2022] Open
Abstract
This study evaluated the efficacy of intra-arterial nimodipine infusion for symptomatic vasospasm in patients with aneurysmal subarachnoid hemorrhage (aSAH). Clinical data collected from 42 consecutive patients with symptomatic vasospasm after aSAH were retrospectively reviewed. Forty-two patients underwent 101 sessions of intra-arterial nimodipine infusion. Angiographic response, immediate clinical response, and clinical outcome were evaluated at discharge and six months later. Angiographic improvement was achieved in 82.2% of patients. The immediate clinical improvement rate was 68.3%, while the deterioration rate was 5.0%. A favorable clinical outcome was achieved in 76.2% at discharge and 84.6% six months. Vasospasm-related infarction occurred in 21.4%. There was no drug-related complication. The nimodipine group showed satisfactory outcomes. Nimodipine can be recommended as an effective and safe intra-arterial agent for the treatment of symptomatic vasospasm after aSAH.
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Affiliation(s)
- W-S Cho
- Department of Neurosurgery, Kangwon National University Hospital, School of Medicine, Chuncheon, Gangwon-do, Korea
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Kim TH, Lee JY, Lee HM, Lee SH, Cho WS, Ju YH, Park EH, Kim KW, Lee SH. Remodelling of nasal mucosa in mild and severe persistent allergic rhinitis with special reference to the distribution of collagen, proteoglycans, and lymphatic vessels. Clin Exp Allergy 2010; 40:1742-54. [PMID: 20860724 DOI: 10.1111/j.1365-2222.2010.03612.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
BACKGROUND Small leucine-rich repeat proteoglycans (decorin, biglycan, and lumican), collagen, and lymphangiogenesis are involved in tissue remodelling of various organs with inflammatory diseases. OBJECTIVE We determined the expression level and the distribution pattern of small leucine-rich repeat proteoglycans (decorin, biglycan, and lumican), collagen and lymphatic vessels in healthy, mild, and severe persistent allergic nasal mucosa. METHODS The distribution pattern of collagen, proteoglycans, and lymphatic vessels in healthy, mild, and severe persistent allergic nasal mucosa was evaluated by the van Gieson staining, immunohistochemistry, RT-PCR, and Western blotting. Quantitative analyses of collagen deposition were calculated as the median of the total percentage area in the tissue specimen. For the evaluation of proteoglycans, the percentage area stained and median optical density were measured for each image. Lymphatic vessels were identified by D2-40 antibody and calculated using the lymphatic vessel density and endothelial length density in tissue specimens. The expression of MMP 2 and 9, TIMP1 and 2 was evaluated with RT-PCR and Western blotting. RESULTS In mild and severe persistent allergic nasal mucosa, compared with healthy nasal mucosa, collagen showed more intense staining in the superficial and submucosal layer. In healthy and allergic nasal mucosa, decorin was lightly stained without significant differences in the percentage area and optical density of staining. However, lumican and biglycan showed strong immunoreactivity in mild and severe persistent allergic nasal mucosa, which was verified by Western blotting. The number and endothelial length density of lymphatic vessels were increased in mild and severe persistent allergic nasal mucosa compared with healthy nasal mucosa. The expression of MMP 9 was increased in severe persistent allergic rhinitis. CONCLUSION AND CLINICAL RELEVANCE These results suggest that the altered distribution pattern of collagen, proteoglycans, and lymphatic vessels could potentially modulate the remodelling of nasal mucosa in mild and severe persistent allergic nasal mucosa.
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Affiliation(s)
- T H Kim
- Department of Otorhinolaryngology-Head & Neck Surgery, College of Medicine, Korea University, Seoul, South Korea
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Cho WS, Jung K, Kim J, Ha Y, Chae C. Expression of mRNA encoding interleukin (IL)-10, IL-12p35 and IL-12p40 in lungs from pigs experimentally infected with Actinobacillus pleuropneumoniae. Vet Res Commun 2005; 29:111-22. [PMID: 15730135 DOI: 10.1023/b:verc.0000047488.05304.3e] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The expression of mRNA encoding interleukin (IL)-10, IL-12p35 and IL-12p40 was studied, by reverse transcription-polymerase chain reaction and by in situ hybridization with a non-radioactive digoxigenin-labelled cDNA probe, in formalin-fixed, paraffin-wax-embedded lung tissue from pigs experimentally infected with Actinobacillus pleuropneumoniae. Forty-eight 7-week-old colostrum-deprived pigs were randomly allocated to infected (n = 24) or control (n = 24) groups. Three pigs from each group were euthanized at 3, 6, 9, 12, 24, 36, 48 and 60 h post inoculation (hpi). IL-10 mRNA was detected in the lung at 3 hpi, numbers of cells positive for IL-10 increasing at 36 hpi. IL-12p35 mRNA was detected in the lung at 3 hpi, numbers of cells positive for IL-12p35 increasing at 36 and 48 hpi and rapidly decreasing thereafter whereas IL-12p40 mRNA was constitutively expressed at low levels during the experiment. Hybridization signals for IL-10, IL-12p35 and IL-12p40 were always associated with inflammation, in particular with macrophages and neutrophils within alveolar spaces. Expression of these cytokines was minimal in non-lesional lung of A. pleuropneumoniae-infected pigs and in normal lung from control pigs. In situ hybridization of A. pleuropneumoniae and these cytokines in serial sections of lung tissues indicated close co-localization of A. pleuropneumoniae and these cytokines in pleuropneumonia. The results suggest that the expression of IL-10 and IL-12 play a role in pathogenesis of A. pleuropneumoniae infection.
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Affiliation(s)
- W S Cho
- Department of Veterinary Pathology, College of Veterinary Medicine and School of Agricultural Biotechnology, Seoul National University, Kwanak-Gu 151-742, Seoul, Republic of Korea
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Abstract
Cyclooxygenase-2 (COX-2) and nitric oxide synthase 2 (NOS2) were detected and localized in 20 pigs with ulcerative colitis caused by natural infection with Salmonella typhimurium. Evidence of NOS2 activity was determined by the formation of nitrotyrosine, a reaction product of peroxynitrite, in NOS2-expressing ulcerative colons by immunohistochemistry. Transcript RNA of COX-2 and NOS2 was consistently detected in colonic tissues from the 20 pigs with ulcerative colitis by using reverse transcription-polymerase chain reaction. Immunohistochemical signals for COX-2 and NOS2 were detected in the ulcerated area of all 20 pigs. Expression of COX-2 and NOS2 was identified continuously within inflammatory intestinal lesions but was minimal in unaffected regions of the colon of S. typhimurium-infected pigs. The immunohistochemistry of serial sections of intestine indicated that the majority of colons containing numerous COX-2-positive cells also had numerous NOS2-positive cells. Localization of NOS2 and a nitrotyrosine antigen was prominent in neutrophils and macrophages in the periphery of the lesions. Simultaneous detection of COX-2 and NOS2 RNA and protein indicated functional activity of prostaglandin and NO production in vivo. This study suggested that COX-2 and NOS2 expression may play a role in the pathophysiologic processes in ulcerative colitis caused by S. typhimurium.
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Affiliation(s)
- W-S Cho
- Department of Veterinary Pathology, College of Veterinary Medicine, Seoul National University, Kwanak-Gu, Republic of Korea
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Cho WS, Chae C. Expression of inflammatory cytokines (TNF-alpha, IL-1, IL-6 and IL-8) in colon of pigs naturally infected with Salmonella typhimurium and S. choleraesuis. ACTA ACUST UNITED AC 2004; 50:484-7. [PMID: 15157014 DOI: 10.1111/j.1439-0442.2004.00588.x] [Citation(s) in RCA: 16] [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: 11/30/2022]
Abstract
The expression of mRNA encoding tumour necrosis factor-alpha (TNF-alpha), interleukin-1 (IL-1), IL-6 and IL-8 was studied, by in situ hybridization with a non-radioactive digoxigenin-labelled probe, in formalin-fixed, paraffin wax-embedded colonic tissue from pigs naturally infected with Salmonella typhimurium and S. choleraesuis. By in situ hybridization, a distinct positive signal for TNF-alpha, IL-1, IL-6 and IL-8 was detected in colon from all 12 infected pigs. Hybridization signals for all four inflammatory cytokines were detected primarily inflammatory cells infiltrating the lamina propria and submucosa. In comparison, expression of all four inflammatory cytokines was minimal in non-lesional colon of infected pigs and in normal colon from control pigs. The results suggest that these cytokines play an important role in the pathophysiological processes in porcine salmonellosis.
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Affiliation(s)
- W S Cho
- Department of Veterinary Pathology, College of Veterinary Medicine and School of Agricultural Biotechnology, Seoul National University, San 56-1, Shillim-Dong, Kwanak-Gu 151-742, Seoul, Korea
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Cho WS, Chae C. Detection of nuclear factor-kappaB and inducible nitric oxide synthase in the lungs of pigs naturally infected with Actinobacillus pleuropneumoniae. J Comp Pathol 2004; 130:112-6. [PMID: 15003467 DOI: 10.1016/j.jcpa.2003.09.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2003] [Accepted: 09/03/2003] [Indexed: 11/18/2022]
Abstract
Activated nuclear factor-kappaB (NF-kappaB) and inducible nitric oxide synthase (iNOS) were detected immunohistochemically in pleuropneumonic lungs from 20 pigs naturally infected with Actinobacillus pleuropneumoniae. NF-kappaB was detected mainly in nuclei of inflammatory cells, confirming its activation. Intense immunolabelling for NF-kappaB and iNOS was seen within the lung lesions, but labelling was minimal in unaffected portions of the lung of infected pigs and in normal lung from uninfected (control) pigs. Examination of serial sections from the 20 infected lung samples demonstrated a close association between NF-kappaB and iNOS. This suggests that NF-kappaB plays a key role in triggering the activation of iNOS in porcine pleuropneumonia.
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Affiliation(s)
- W-S Cho
- Department of Veterinary Pathology, College of Veterinary Medicine and School of Agricultural Biotechnology, Seoul National University, San 56-1, Shillim-Dong, Kwanak-Gu, Seoul 151-742, South Korea
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Affiliation(s)
- K Jung
- Department of Veterinary Pathology, College of Veterinary Medicine, Seoul National University, San 56-1, Shillim-Dong, Kwanak-Gu 151-742, Seoul, Republic of Korea
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Cho WS, Chae C. PCR detection of Actinobacillus pleuropneumoniaeapxIV gene in formalin-fixed, paraffin-embedded lung tissues and comparison with in situ hybridization. Lett Appl Microbiol 2003; 37:56-60. [PMID: 12803557 DOI: 10.1046/j.1472-765x.2003.01347.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
AIMS Formalin-fixed, paraffin-embedded lung tissues from pigs experimentally infected with 12 Actinobacillus pleuropneumoniae serotypes were used to develop nested PCR for the detection of apxIV gene. METHODS AND RESULTS The PCR results from formalin-fixed, paraffin-embedded tissues were compared with in situ hybridization. The apxIV gene was detected in formalin-fixed, paraffin-embedded lung tissues from all 39 pigs experimentally infected with 12 A. pleuropneumoniae serotypes by nested PCR. In situ hybridization produced a distinct positive signal in all 39 pigs experimentally infected with 12 A. pleuropneumoniae serotypes. Agreement rates between nested PCR and in situ hybridization were 100% for the detection of apxIV gene in formalin-fixed paraffin-embedded lung tissues. Acceptable PCR signals were detected from lung tissues fixed for periods up to 180 days. CONCLUSIONS The apxIV gene is species-specific rather than serotype-specific and is therefore an important diagnostic marker. The nested PCR assay would be a useful method for the detection of apxIV gene to diagnose A. pleuropneumoniae infection when formalin-fixed tissues are submitted. SIGNIFICANCE AND IMPACT OF THE STUDY This study confirmed the possibility of using formalin-fixed, paraffin-embedded tissues for the diagnosis of A. pleuropneumoniae infection in pigs.
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Affiliation(s)
- W-S Cho
- Department of Veterinary Pathology, College of Veterinary Medicine and School of Agricultural Biotechnology, Seoul National University, Seoul, Republic of Korea
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Abstract
Evidence of nitric oxide synthase (NOS) 2 activity was determined by formation of nitrotyrosine (a reaction product of peroxynitrite) and by activation of poly(ADP-ribose) synthetase (PARS) in NOS2-expressed pleuropneumonic lungs from 20 pigs naturally infected with Actinobacillus pleuropneumoniae using immunohistochemistry. Intense immunostaining for nitrotyrosine residue was seen within the lung lesions from A. pleuropneumoniae-infected pigs, but it was minimal in the unaffected parts of the lung from A. pleuropneumoniae-infected pigs and in the normal lung from control pigs. Staining was especially strong in neutrophils and macrophages in the periphery of the lesions and within the alveolar spaces. There was close cell-to-cell correlation when serial sections were examined by immunohistochemistry for NOS2 and nitrotyrosine in each of the 20 lung samples. Expression of PARS was always present within inflammatory lesions but was minimal in the unaffected lung of A. pleuropneumoniae-infected pigs. Macrophages in alveolar spaces frequently exhibited strong staining for PARS. Colocalization of nitrotyrosine and PARS antigen was especially prominent in macrophages in the periphery of lesions. NOS2 expression in pleuropneumonic areas associated with protein nitrosation and PARS suggests that NOS2 is functionally active during infections caused by A. pleuropneumoniae.
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Affiliation(s)
- W-S Cho
- Department of Veterinary Pathology, College of Veterinary Medicine, Seoul National University, Kwanak-Gu, Seoul, Republic of Korea
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Cho WS, Chae C. Differentiation of twelve Actinobacillus pleuropneumoniae serotypes by outer membrane lipoprotein gene-based restriction fragment length polymorphism. J Vet Med B Infect Dis Vet Public Health 2003; 50:90-4. [PMID: 12675901 DOI: 10.1046/j.1439-0450.2003.00626.x] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Twelve Actinobacillus pleuropneumoniae serotypes were differentiated by restriction fragment length polymorphism (RFLP) of polymerase chain reaction (PCR)-amplified fragments from the outer membrane lipoprotein (omlA) gene. All 12 reference serotypes and 80 field isolates produced the expected 950-base pair (bp) fragment of the omlA gene by PCR. Combining the RFLP patterns obtained with SfaNI, Bst71I, AluI, NciI, nine distinct patterns were observed in the 12 serotype reference strains. The PCR-based RFLP analysis of omlA genes allows differentiation among the 12 serotypes, with the exception of group 1 (serotypes 1, 9 and 11), and group 2 (serotypes 2 and 8). When the PCR products from the 70 field isolates were subjected to RFLP analysis, 68 showed the same RFLP patterns as their respective serotype reference strain. Two isolates that could not be typed had the same RFLP patterns as those of serotype 5. These results suggest that PCR-based RFLP analysis of the omlA genes may be of value in differentiating among 12 A. pleuropneumoniae serotypes.
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Affiliation(s)
- W-S Cho
- Department of Veterinary Pathology, College of Veterinary Medicine and School of Agricultural Biotechnology, Seoul National University, Building no. 85, San 56-1, Shillim-dong, Kwanak-Gu 151-742, Seoul, Republic of Korea
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Abstract
Cyclooxygenase-2 (COX-2) was detected and localized in 15 pigs with naturally occurring pleuropneumonia using a 437-base pair digoxigenin-labeled cDNA probe in an in situ hybridization protocol. Histopathologic changes in the acute stage were characterized by coagulative necrosis of lung parenchyma, hemorrhage, vascular thrombosis, edema, fibrin deposition, and infiltration of lung parenchyma by neutrophils and alveolar macrophages in nine pigs. In chronic lesions, a thick layer of granulation tissue surrounded foci of pulmonary necrosis in six pigs. All 15 pigs infected with Actinobacillus pleuropneumoniae, confirmed by bacterial isolation, had distinct positive hybridization signals for COX-2 in bronchial, bronchiolar epithelial cells, alveolar macrophages, neutrophils, and type I pneumocytes. COX-2 expression was detected primarily in neutrophils from pigs with acute lesions and primarily in alveolar macrophages from pigs with chronic lesions. The results suggest that a prostanoid product of COX-2 is an important component of the inflammatory response to acute and chronic A. pleuropneumoniae infection.
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Affiliation(s)
- W S Cho
- Department of Veterinary Pathology, College of Veterinary Medicine and School of Agricultural Biotechnology, Seoul National University, Suwon, Republic of Korea
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30
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Abstract
Cyclooxygenase-2 (COX-2) protein was detected immunohistochemically in formalin-fixed, paraffin wax-embedded lung tissues from 15 pigs with naturally occurring pleuropneumonia caused by Actinobacillus pleuropneumoniae. Positive cells typically exhibited a red reaction product without background staining. Alveolar macrophages, neutrophils, and bronchial and bronchiolar epithelial cells had positive immunohistochemical signals. Immunoreactivity of COX-2 protein was intense in the clustered leucocytes with streaming nuclear chromatin that are a characteristic histological feature of porcine pleuropneumonia. COX-2 protein was always associated with macrophages and neutrophils in pleuropneumonic lung lesions but was minimal in non-lesional lung of A. pleuropneumoniae -infected pigs and in normal lung from control pigs. The results suggest that COX-2 plays a role in pathophysiological processes during A. pleuropneumoniae infection.
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Affiliation(s)
- W-S Cho
- Department of Veterinary Pathology, College of Veterinary Medicine and School of Agricultural Biotechnology, Seoul National University, Suwon 441-744, Kyounggi-Do, Republic of Korea
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31
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Han DU, Choi C, Kim J, Cho WS, Chung HK, Ha SK, Jung K, Chae C. Anti-microbial susceptibility for east1 + Escherichia coli isolated from diarrheic pigs in Korea. J Vet Med B Infect Dis Vet Public Health 2002; 49:346-8. [PMID: 12420870 DOI: 10.1046/j.1439-0450.2002.00577.x] [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: 11/20/2022]
Abstract
The in vitro susceptibilities of 128 isolates of east1 + Escherichia coli from pre-weaned and post-weaned pigs with diarrhoea were tested with nine commonly used anti-microbial agents by an agar dilution minimal inhibitory concentration (MIC) procedure according to National Committee for Clinical Laboratory Standards guidelines. For the isolates from preweaned and post-weaned pigs, most of them were susceptible to low concentrations (MIC90) of tetracycline (4 and 2 microg/ml), ceftiofur (2 and 2 microg/ml), and colistin (4 and 2 microg/ml). Marked resistance was found in others.
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Affiliation(s)
- D U Han
- Department of Veterinary Pathology, College of Veterinary Medicine, School of Agricultural Biotechnology, Seoul National University, Kyounggi Do, Republic of Korea
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Choi C, Cho WS, Kim B, Chae C. Expression of Interferon-gamma and tumour necrosis factor-alpha in pigs experimentally infected with Porcine Reproductive and Respiratory Syndrome Virus (PRRSV). J Comp Pathol 2002; 127:106-13. [PMID: 12354520 DOI: 10.1053/jcpa.2002.0566] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The expression of mRNA encoding interferon-gamma (IFN-gamma) and tumour necrosis factor-alpha (TNF-alpha) was studied, by reverse transcription-polymerase chain reaction and by in-situ hybridization with a non-radioactive digoxigenin-labelled probe, in formalin-fixed, paraffin wax-embedded lung tissue from pigs experimentally infected with a Korean isolate (North American genotype) of PRRSV. Both IFN-gamma and TNF-alpha mRNA were detected in the lung as early as 1 day post-inoculation (dpi) and up to 10 dpi. Hybridization signals for IFN-gamma and TNF-alpha were usually associated with inflammation, in particular with macrophages within alveolar septa. Expression of these cytokines was minimal in non-lesional lung of PRRSV-infected pigs and in normal lung from control pigs. The results suggest that IFN-gamma and TNF-alpha play a role in pulmonary defence against PRRSV.
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Affiliation(s)
- C Choi
- Department of Veterinary Pathology, College of Veterinary Medicine and School of Agricultural Biotechnology, Seoul National University, Suwon 441-744, Kyounggi-Do, Republic of Korea
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Choi C, Han DU, Kim J, Cho WS, Chung HK, Jung T, Yoon BS, Chae C. Prevalence of Brachyspira pilosicoli in Korean pigs, determined using a nested PCR. Vet Rec 2002; 150:217-8. [PMID: 11878441 DOI: 10.1136/vr.150.7.217] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- C Choi
- Department of Veterinary Pathology, College of Veterinary Medicine and School of Agricultural Biotechnology, Seoul National University, Suwon, Republic of Korea
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34
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Cho WS, Chae C. Immunohistochemical detection and distribution of inducible nitric oxide synthase in pigs naturally infected with Actinobacillus pleuropneumoniae. J Comp Pathol 2002; 126:109-14. [PMID: 11944999 DOI: 10.1053/jcpa.2001.0529] [Citation(s) in RCA: 10] [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: 01/22/2023]
Abstract
Inducible nitric oxide synthase (iNOS) protein was detected immunohistochemically in formalin-fixed, paraffin wax-embedded lung tissues from 10 natural cases of porcine pleuropneumonia. Positive cells typically exhibited a red reaction product without background staining. Labelling of iNOS protein was intense in "oat cells", the clustered leucocytes with streaming nuclear chromatin that are a characteristic histological feature of porcine pleuropneumonia. Macrophages and neutrophils within alveolar spaces but not within blood vessels consistently showed iNOS labelling, but such labelling was minimal in non-lesional lung of Actinobacillus pleuropneumoniae -infected pigs and in normal lung from control pigs. The results suggest that iNOS plays a role in pathophysiological processes during A. pleuropneumoniae infection.
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Affiliation(s)
- W-S Cho
- Department of Veterinary Pathology, College of Veterinary Medicine and School of Agricultural Biotechnology, Seoul National University, Suwon 441-744, Kyounggi-Do, Republic of Korea
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35
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Kwon D, Choi C, Jung T, Chung HK, Kim JP, Bae SS, Cho WS, Kim J, Chae C. Genotypic prevalence of the fimbrial adhesins (F4, F5, F6, F41 and F18) and toxins (LT, STa, STb and STx2e) in Escherichia coli isolated from postweaning pigs with diarrhoea or oedema disease in Korea. Vet Rec 2002; 150:35-7. [PMID: 11829064 DOI: 10.1136/vr.150.2.35] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [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: 11/03/2022]
Abstract
A PCR was used to determine the genotypic prevalence of five fimbrial adhesins (F4, F5, F6, F41 and F18), two heat-stable enterotoxins (STa and STb), the heat-labile enterotoxin (LT), and the shiga toxin 2e (Stx2e) in 230 isolates of Escherichia coli from postweaning pigs with diarrhoea or oedema disease. Ninety-four (40.9 per cent) of the isolates carried genes for at least one of the fimbrial adhesins or toxins. Genes for the F18 fimbrial adhesin were detected in 18.3 per cent, and genes for F4, F6, F5 and F41 were detected in 10.0 per cent, 4.3 per cent, 1.7 per cent and 0.8 per cent of the isolates, respectively. Genes for STa, STb and LT were detected in 25.7 per cent, 15.2 per cent and 8.7 per cent of the isolates, respectively. Genes for Stx2e were detected in 36 (15.6 per cent) of the isolates, and among them 24 also contained the gene for F18ab and four also contained the gene for F18ac.
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Affiliation(s)
- D Kwon
- Department of Veterinary Pathology, College of Veterinary Medicine and School of Agricultural Biotechnology, Seoul National University, Suwon, Kyounggi-Do, Republic of Korea
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36
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Cho WS, Chae C. Expression of nitric oxide synthase 2 and tumor necrosis factor alpha in swine naturally infected with Actinobacillus pleuropneumoniae. Vet Pathol 2002; 39:27-32. [PMID: 12102216 DOI: 10.1354/vp.39-1-27] [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: 11/19/2022]
Abstract
Nitric oxide synthase 2 (NOS2) and tumor necrosis factor alpha (TNF-alpha) were detected and localized in 15 pigs with naturally occurring pleuropneumonia by use of in situ hybridization with a nonradioactive digoxigenin-labeled cDNA probe. Two cDNA probes 491 and 219 base pairs for NOS2 and TNF-alpha, respectively, were generated by reverse transcription polymerase chain reaction. All 15 pigs infected with Actinobacillus pleuropneumoniae had distinct positive hybridization signals for NOS2 and TNF-alpha. Strong hybridization signals for both NOS2 and TNF-alpha were evident in degenerate alveolar leukocytes bordering zones of coagulative necrosis and in alveolar spaces. NOS2 nucleic acids were detected in neutrophils and macrophages. In situ hybridization of serial sections of lung tissue revealed numerous cells positive for NOS2 and TNF-alpha, suggesting that NOS2 and TNF-alpha expression may play a role in the pathophysiology of pleuropneumonia.
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Affiliation(s)
- W S Cho
- Department of Veterinary Pathology, College of Veterinary Medicine and School of Agricultural Biotechnology, Seoul National University, Suwon, Republic of Korea
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37
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Roh SD, Kim SW, Cho WS. The numerical modelling and process simulation for the fault diagnosis of rotary kiln incinerator. Waste Manag Res 2001; 19:403-412. [PMID: 11954726 DOI: 10.1177/0734242x0101900505] [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] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The numerical modelling and process simulation for the fault diagnosis of rotary kiln incinerator were accomplished. In the numerical modelling, two models applied to the modelling within the kiln are the combustion chamber model including the mass and energy balance equations for two combustion chambers and 3D thermal model. The combustion chamber model predicts temperature within the kiln, flue gas composition, flux and heat of combustion. Using the combustion chamber model and 3D thermal model, the production-rules for the process simulation can be obtained through interrelation analysis between control and operation variables. The process simulation of the kiln is operated with the production-rules for automatic operation. The process simulation aims to provide fundamental solutions to the problems in incineration process by introducing an online expert control system to provide an integrity in process control and management. Knowledge-based expert control systems use symbolic logic and heuristic rules to find solutions for various types of problems. It was implemented to be a hybrid intelligent expert control system by mutually connecting with the process control systems which has the capability of process diagnosis, analysis and control.
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Affiliation(s)
- S D Roh
- Dept of Chem Eng, The Univ of Seoul, Korea
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38
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Choi C, Kim B, Cho WS, Kim J, Kwon D, Cheon DS, Chae C. Capsular serotype, toxA gene, and antimicrobial susceptibility profiles of Pasteurella multocida isolated from pigs with pneumonia in Korea. Vet Rec 2001; 149:210-2. [PMID: 11548960 DOI: 10.1136/vr.149.7.210] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- C Choi
- Department of Veterinary Pathology, College of Veterinary Medicine and School of Agricultural Biotechnology, Seoul National University, Suwon, Republic of Korea
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39
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Han DU, Choi C, Ham HJ, Jung JH, Cho WS, Kim J, Higgins R, Chae C. Prevalence, capsular type and antimicrobial susceptibility of Streptococcus suis isolated from slaughter pigs in Korea. Can J Vet Res 2001; 65:151-5. [PMID: 11480519 PMCID: PMC1189668] [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: 02/20/2023]
Abstract
This study was undertaken to determine the prevalence, capsular serotype, and antimicrobial susceptibility of Streptococcus suis isolated from slaughter pigs. Capsular serotype and antimicrobial susceptibility were determined by coagglutination test and agar dilution minimum inhibitory concentration, respectively. Streptococcus suis was isolated from 55 of the 406 palatine tonsillar samples tested (13.8%) and 14 of the 29 sampled herds (48.3%). Of the 55 isolates recovered from slaughter pigs, 26 (47.3%) were untypeable. Of the remaining 29 isolates, capsular serotypes 9 (9 isolates) and 16 (4 isolates) were the most common, followed by capsular serotypes 4 (3 isolates) and 7 (3 isolates). Every capsulated isolate was typeable and no palatine tonsillar sample yielded more than one serotype. Most of isolates were susceptible to low concentrations (MIC90) of amoxicillin (2 microg/mL), ceftiofur (1 microg/mL), and penicillin (1 microg/mL). No correlation was found between antimicrobial susceptibility and capsular serotype.
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Affiliation(s)
- D U Han
- Department of Veterinary Pathology, College of Veterinary Medicine and School of Agricultural Biotechnology, Seoul National University, Suwon, Kyounggi Do, Republic of Korea
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40
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Abstract
The apxIV gene was detected, by in-situ hybridization with a non-radioactive digoxigenin-labelled probe, in formalin-fixed, paraffin wax-embedded samples of lung tissue from 10 pigs naturally infected with Actinobacillus pleuropneumoniae. A 442 base pair DNA probe of the apxIV gene from A. pleuropneumoniae serotype 2 was generated by the polymerase chain reaction. All 10 pigs infected with A. pleuropneumoniae serotypes 2, 5, 6, or an untypable strain showed a distinct, positive signal in the degenerate alveolar leucocytes in alveolar spaces, and in the dense zone of degenerated cells in granulation tissue surrounding the necrotic areas. Thus, the study demonstrated the presence of the apxIV gene in pleuropneumonic lesions caused by A. pleuropneumoniae.
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Affiliation(s)
- W S Cho
- Department of Veterinary Pathology, College of Veterinary Medicine and School of Agricultural Biotechnology, Seoul National University, Suwon 441-744, Kyounggi-Do, Republic of Korea
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41
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Abstract
A total of 90 Actinobacillus pleuropneumoniae field strains from pigs were serotyped by slide agglutination and analyzed for the presence of the apxIV gene by polymerase chain reaction. Of the 90 isolates serotyped, serotypes 2 (47 isolates) and 5 (25 isolates) were the most common, followed by serotype 6 (10 isolates). Three isolates belonged to serotype 7, and 5 isolates could not be typed. All 90 A. pleuropneumoniae field isolates tested carried the apxIV gene. This gene is species specific rather than serotype specific. Therefore, the ApxIV toxin has potential value for use both in vaccines and in diagnostic tests.
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Affiliation(s)
- W S Cho
- Department of Veterinary Pathology, College of Veterinary Medicine, School of Agricultural Biotechnology, Seoul National University, Kyounggi Do, Republic of Korea
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42
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Kim B, Min K, Choi C, Cho WS, Cheon DS, Kwon D, Kim J, Chae C. Antimicrobial susceptibility of Actinobacillus pleuropneumoniae isolated from pigs in Korea using new standardized procedures. J Vet Med Sci 2001; 63:341-2. [PMID: 11307940 DOI: 10.1292/jvms.63.341] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The in vitro susceptibilities of 76 isolates of Actinobacillus pleuropneumoniae collected from pigs with pleuropneumonia were tested with 12 commonly used antimicrobial drugs by an agar dilution minimal inhibitory concentration procedure according to National Committee for Clinical Laboratory Standards (NCCLS) guidelines. Field isolates had low MICs for ceftiofur, danofloxacin and penicillin. No correlation of antimicrobial resistance was related to serotype.
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Affiliation(s)
- B Kim
- Department of Veterinary Pathology, College of Veterinary Medicine and School of Agricultural Biotechnology, Seoul National University, Suwon, Republic of Korea
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43
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Chae C, Kim O, Choi C, Min K, Cho WS, Kim J, Tai JH. Prevalence of porcine epidemic diarrhoea virus and transmissible gastroenteritis virus infection in Korean pigs. Vet Rec 2000; 147:606-8. [PMID: 11110482 DOI: 10.1136/vr.147.21.606] [Citation(s) in RCA: 69] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- C Chae
- Department of Veterinary Pathology, College of Veterinary Medicine and School of Agricultural Biotechnology, Seoul National University, Suwon, Republic of Korea
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44
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Kim J, Choi C, Cho WS, Chae C. Immunohistochemistry and polymerase chain reaction for the detection of Lawsonia intracellularis in porcine intestinal tissues with proliferative enteropathy. J Vet Med Sci 2000; 62:771-3. [PMID: 10945299 DOI: 10.1292/jvms.62.771] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Detection method of Lawsonia intracellularis was studied in formalin-fixed paraffin-embedded intestinal tissues from 5 naturally infected pigs by immunohistochemistry with a monoclonal antibody against outer membrane protein of L. intracellularis. Warthin-Starry silver stain revealed clusters of argyrophilic, slightly curved rod-shaped organisms in the apical cytoplasm of enterocytes. Immunohistochemical staining with a L. intracellularis-specific monoclonal antibody confirmed the presence of the organism in the apical cytoplasm of hyperplastic enterocytes. The presence of L. intracellularis in the ileum of pig with proliferative enteropathy was confirmed by polymerase chain reaction (PCR) further on the basis of amplification of 319 base pair products specific for porcine L. intracellularis chromosomal DNA. Immunohistochemistry and PCR may be a complementary method to confirm the diagnosis of L. intracellularis infection in pigs.
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Affiliation(s)
- J Kim
- Department of Veterinary Pathology, College of Veterinary Medicine and School of Agricultural Biotechnology, Seoul National University, Suwon, Kyounggi-Do, Republic of Korea
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45
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Kim HU, Yun CH, Cho WS, Kang SK, Chung TY. Nucleotide sequence of rice cDNA that encodes a ubiquitin protein and a 79-amino acid protein. Plant Physiol 1995; 108:865. [PMID: 7610191 PMCID: PMC157427 DOI: 10.1104/pp.108.2.865] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Affiliation(s)
- H U Kim
- Genetics Division, Rural Development Administration, Suwon, Korea
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46
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Yonekawa H, Moriwaki K, Gotoh O, Miyashita N, Matsushima Y, Shi LM, Cho WS, Zhen XL, Tagashira Y. Hybrid origin of Japanese mice "Mus musculus molossinus": evidence from restriction analysis of mitochondrial DNA. Mol Biol Evol 1988; 5:63-78. [PMID: 2833677 DOI: 10.1093/oxfordjournals.molbev.a040476] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.2] [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: 01/02/2023] Open
Abstract
The Japanese mouse, Mus musculus molossinus, has long been considered an independent subspecies of the house mouse. A survey of restriction-site haplotypes of mitochondrial DNA (mtDNA) showed that Japanese mice have two main maternal lineages. The most common haplotype is closely related to the mtDNA of the European subspecies M. m. musculus. The other common haplotype and two minor ones are closely related to each other and to the mtDNA of an Asiatic subspecies, M. m. castaneus. Two other rare variants are probably the result of recent contamination by European M. m. domesticus. The musculus type of mtDNA is found in the southern two-thirds of Japan, whereas the common castaneus type is found in the northern third and the minor variants are found sporadically throughout Japan. The castaneus mtDNA lineage had a few minor variants, whereas the musculus lineage was completely monomorphic. By contrast, the native population of M. m. castaneus and the Chinese and Korean musculus populations were highly polymorphic. These results suggest that M. m. molossinus is a hybrid between ancestral colonies, possibly very small, of M. m. musculus and M. m. castaneus, rather than an independent subspecies.
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Affiliation(s)
- H Yonekawa
- Department of Biochemistry, Saitama Cancer Center Research Institute, Japan
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47
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Lee YK, Chae SI, Cho WS. Endoscopic extraction of a perforating wire from the stomach. Korean J Intern Med 1987; 2:285-7. [PMID: 3154842 PMCID: PMC4534943 DOI: 10.3904/kjim.1987.2.2.285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
A Report on the succesful endoscopic removal of a wire 3.8 cm long which perforated the gastric wall.
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Nah YH, Chae SI, Song JH, Choi IT, Kim HJ, Park S, Cho WS. Percutaneous endoscopic gastrostomy for enteral nutrition. Korean J Intern Med 1987; 2:66-73. [PMID: 3155323 PMCID: PMC4534918 DOI: 10.3904/kjim.1987.2.1.66] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
From January to October, 1986, at Wonkwang University Hospital in Iri, percutaneous endoscopic gastrostomy(PEG) was attempted in 26 patients and was successful in 24. This study was designed to review the technique and to evaluate the efficacy of PEG. The mean operation time was 22 minutes (range: 14 to 42 minutes). After feeding started, early positive nitrogen balance was achieved in all patients. All gastrostomies functioned well throughout the patient’s survival with the longest functioning at 10 month. There were no procedure-related deaths, and morbidity was lower and less severe as compared with large-bore nasogastric tube feeding. Complications included minor wound infection in two patients, stomal growth in one patient, leaks around the tube in two patients, and intraperitoneal leak in one patient. No patient developed aspiration pneumonia or required laparotomy for complications from PEG. The gastrostomy tube was easily removed endoscopically when treatment was completed. Feeding via a large-bore tube increased the risk of aspiration pneumonia (72%) and the feeding cost via a small-bore tube with elemental diet exceeded that of PEG by more than tenfold. This author’s experience with these 26 patients has led to the conclusion that PEG is safe, easy to perform, and effective means of creating feeding gastrostomy without laparotomy or general anesthesia. The authors suggest that PEG be the preferred route of alimentation in those patients who are unable to swallow for prolonged periods of time.
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Sagai T, Shiroishi T, Moriwaki K, Bonhomme F, Petras ML, Thohari M, Yu ZC, Lu DY, Cho WS. Characterization of newly isolated monoclonal antibodies against MHC of a Japanese wild mouse. Immunogenetics 1986; 24:361-7. [PMID: 3793153 DOI: 10.1007/bf00377953] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
We have already developed nine B10.MOL congenic strains carrying H-2 haplotypes derived from Japanese wild mice, Mus musculus molossinus, with the C57BL/10 genetic background. To obtain monoclonal antibodies against the H-2 antigen of the Japanese wild mouse, we carried out cell fusion using spleen cells from the animal immunized with one of the B10.MOL strains, B10.MOL-SGR (H-2wm7). As a result, 19 hybridomas producing monoclonal antibodies were produced. Analysis with the intra-H-2 recombinants derived from B10.MOL-SGR indicated that 8 of them reacted with the class I and 11 with the class II molecule. The class I antibodies were tested for their cross-reactivities on wild mice and on the panels of standard inbred and B10.MOL strains. Most of the antibodies reacted with both the Japanese wild mice and the other subspecies, including standard inbred, while two antibodies highly specific for the donor H-2K region reacted with only three wild-derived mice, two M. m. molossinus from Anjo and Shizuoka, Japan, and one M. m. domesticus from Pigeon, Canada. In addition, all of the other four antibodies reactive with the K antigen of B10.MOL-SGR also reacted with the same three wild mice. The wild mice belonging to different subspecies might share very similar H-2K antigenic determinants in spite of their genetic and geographical remoteness.
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Miyashita N, Moriwaki K, Minezawa M, Yonekawa H, Bonhomme F, Migita S, Yu ZC, Lu DY, Cho WS, Thohari M. Allelic constitution of the hemoglobin beta chain in wild populations of the house mouse, Mus musculus. Biochem Genet 1985; 23:975-86. [PMID: 4084209 DOI: 10.1007/bf00499941] [Citation(s) in RCA: 33] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
We studied the allelic frequency of the hemoglobin beta chain (Hbb) of wild mice, Mus musculus, collected from 46 localities, mostly in Asia and surrounding areas. The wild populations in the northern part of China, Korea, and the central part of Japan exhibited an almost monomorphic distribution of Hbbp. In the southern part of Asia, the frequency of Hbbp decreased and Hbbd was predominant. Although Hbbs and Hbbd are generally found in Europe, the Hbbp allele was present in Southeastern Europe (Bulgaria). In the light of these results, the Hbbp allele might have originated in mice of northern Asia.
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