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Sim YC, Yang SK, Han SA, Kim YH, Hwang K, Joo JD, Cho SW, Won TB, Rhee CS, Kim CY, Kim JW. Validation of Korean Olfactory Questionnaire for Perioperative Olfactory Assessment in Endoscopic Endonasal Skull Base Surgery. Ear Nose Throat J 2024:1455613241234818. [PMID: 38424695 DOI: 10.1177/01455613241234818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2024] Open
Abstract
Objective: To analyze changes in olfactory function after endoscopic endonasal skull base surgery and compare performance of the olfactory questionnaire with those of conventional psychophysical tests. Methods: Patients were classified into 5 categories for olfactory function evaluation (normal, mild hyposmia, moderate hyposmia, severe hyposmia, and anosmia) based on a self-assessment. Patients also underwent the butanol threshold test (BTT), Cross-Cultural Smell Identification Test (CCSIT), and 11-item olfactory questionnaire. Subjects with normosmia preoperatively and who were followed up at least 6 months after surgery were analyzed. Receiver operating characteristic curves and confusion matrix analysis were performed for BTT, CCSIT, and olfactory questionnaire to compare their diagnostic abilities. The effects of age, preoperative olfaction, septal flap, tumor pathology, and tumor size on postoperative olfaction were evaluated using multivariate linear regression analysis. Results: Data from 108 patients were analyzed. Postoperative changes in the olfactory questionnaire were significantly associated with changes in the BTT and CCSIT. The area under the curve for postoperative self-olfactory function classification was highest for olfactory questionnaire (0.894), followed by BTT (0.767) and CCSIT (0.688). Patient age at the time of surgery and preoperative BTT score were significantly related to postoperative olfactory outcomes. Conclusion: The olfactory questionnaire correlated well with conventional psychosomatic olfactory function tests. In combination with clinical parameters and preoperative psychosomatic olfactory function tests, the olfactory questionnaire is suitable for assessing subjective olfactory function after endoscopic endonasal skull base surgery.
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Affiliation(s)
- Young-Chang Sim
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea
- Department of Otorhinolaryngology-Head and Neck Surgery, Institute of Wonkwang Medical Science, School of Medicine, Wonkwang University, Iksan-si, Jeollabuk-do, Republic of Korea
| | - Seung Koo Yang
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Sun A Han
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Young-Hoon Kim
- Department of Neurosurgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Kihwan Hwang
- Department of Neurosurgery, Regional Cardiocerebrovascular Center, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Jin-Deok Joo
- Department of Neurosurgery, Jeju National University Hospital, Jeju National University College of Medicine, Jeju-si, Jeju-do, Republic of Korea
| | - Sung-Woo Cho
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Tae-Bin Won
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Chae-Seo Rhee
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea
- Sensory Organ Research Institute, Seoul National University Medical Research Center, Seoul, Republic of Korea
| | - Chae-Yong Kim
- Department of Neurosurgery, Regional Cardiocerebrovascular Center, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Jeong-Whun Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea
- Sensory Organ Research Institute, Seoul National University Medical Research Center, Seoul, Republic of Korea
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Han SA, Kim S, Seo Y, Yang SK, Rhee CS, Han DH. Dental implant as a potential risk factor for maxillary sinus fungus ball. Sci Rep 2024; 14:2483. [PMID: 38291074 PMCID: PMC10827791 DOI: 10.1038/s41598-024-52661-9] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 01/22/2024] [Indexed: 02/01/2024] Open
Abstract
Fungus ball is the most common form of non-invasive fungal sinusitis, and maxillary sinus is the most commonly involved site. Maxillary sinus fungus ball (MFB) accounts for a considerable proportion of unilateral maxillary sinusitis. The prevalence of MFB has recently increased; however, its contributing factors are unclear. This study analyzed the association between MFB and dental implants. One hundred one patients who underwent unilateral maxillary sinus surgery were divided into two groups based on surgical biopsy results: unilateral bacterial sinusitis (UBS, n = 45) and MFB (n = 56). Stratified random sampling of 30 patients from each group was performed to adjust for age. The number of dental implants on maxillary teeth and degree of penetration into the maxillary sinus was radiologically evaluated. The number of patients with dental implants was greater (P = 0.085) and the number of implants was significantly higher (P = 0.031) in the MFB group. Dental implant can be a potential risk factor for MFB development. Therefore, dental implant surgeons should take caution in penetrating the maxillary sinus floor during implant insertion and otolaryngologists should consider the possibility of fungus ball when assessing patients with sinusitis who have dental implants.
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Affiliation(s)
- Sun A Han
- Department of Otorhinolaryngology-Head and Neck Surgery, Hallym University Dongtan Sacred Heart Hospital, Hwaseong-si, Republic of Korea
| | - Sungtae Kim
- Department of Periodontology, Dental Research Institute, Seoul National University School of Dentistry, Seoul, Republic of Korea
| | - Yuju Seo
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University College of Medicine, Daehakro 101, Jongno-gu, Seoul, Republic of Korea
| | - Seung Koo Yang
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University College of Medicine, Daehakro 101, Jongno-gu, Seoul, Republic of Korea
| | - Chae-Seo Rhee
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University College of Medicine, Daehakro 101, Jongno-gu, Seoul, Republic of Korea
- Graduate School of Immunology, Seoul National University College of Medicine, Seoul, Republic of Korea
- Institute of Allergy and Clinical Immunology and Sensory Organ Research Institute, Seoul National University Biomedical Research Center, Seoul, Republic of Korea
- Sensory Organ Research Institute, Seoul National University Biomedical Research Center, Seoul, Republic of Korea
| | - Doo Hee Han
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University College of Medicine, Daehakro 101, Jongno-gu, Seoul, Republic of Korea.
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A Han S, Cha H, Yang SK, Kim SY, Han DH, Kim DY, Rhee CS, Kim HJ. Sleep parameter characteristics of patients with OSA who have retropalatal circumferential narrowing and the clinical significance of lateral pharyngeal wall collapse during sleep. Sleep Breath 2023; 27:2165-2173. [PMID: 36959432 PMCID: PMC10656349 DOI: 10.1007/s11325-023-02808-1] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 02/13/2023] [Accepted: 03/06/2023] [Indexed: 03/25/2023]
Abstract
BACKGROUND The lateral pharyngeal wall (LPW) is a critical anatomic structure in patients with obstructive sleep apnea (OSA). Resolving the retropalatal circumferential (RC) narrowing caused by combination of both LPW collapse and antero-posterior (AP) narrowing holds promise for surgical treatment of OSA. We sought to determine the clinical characteristics and distinctive alterations in sleep parameters of patients with OSA who have RC narrowing and LPW collapse. METHODS Drug-induced sleep endoscopy (DISE), polysomnography findings, and sleep questionnaires were reviewed retrospectively in patients with OSA. RESULTS Of the 106 OSA patients examined, 48% showed RC narrowing and 44% showed AP narrowing at the oropharynx level during sleep while 8% of the patients showed only LPW collapse. Patients with RC narrowing with LPW collapse exhibited a higher BMI than those with AP narrowing only. In addition, patients with RC narrowing showed more aggravated sleep parameters including apneic events than patients with AP narrowing alone. The degree of RC narrowing correlated significantly with the severity of OSA as shown by a higher apnea index and lower oxygen desaturations. CONCLUSIONS Our clinical findings suggest that the presence of RC narrowing with LPW collapse in OSA is closely related to increased apneic and oxygen desaturation events. RC narrowing with LPW collapse may be targets for surgical correction in patients with OSA to improve therapeutic outcomes.
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Affiliation(s)
- Sun A Han
- Department of Otorhinolaryngology-Head and Neck Surgery, Hallym University Dongtan Sacred Heart Hospital, Hwaseong-si, Gyeonggi-do, 18450, Korea
| | - Hyunkyung Cha
- Department of Otorhinolaryngology, Seoul National University College of Medicine, Seoul National University Hospital, 103 Daehak-Ro, Jongno-Gu, Seoul, 03080, Korea
| | - Seung Koo Yang
- Department of Otorhinolaryngology, Seoul National University College of Medicine, Seoul National University Hospital, 103 Daehak-Ro, Jongno-Gu, Seoul, 03080, Korea
| | - Seo Young Kim
- Department of Otorhinolaryngology, Seoul National University College of Medicine, Seoul National University Hospital, 103 Daehak-Ro, Jongno-Gu, Seoul, 03080, Korea
| | - Doo Hee Han
- Department of Otorhinolaryngology, Seoul National University College of Medicine, Seoul National University Hospital, 103 Daehak-Ro, Jongno-Gu, Seoul, 03080, Korea
| | - Dong-Young Kim
- Department of Otorhinolaryngology, Seoul National University College of Medicine, Seoul National University Hospital, 103 Daehak-Ro, Jongno-Gu, Seoul, 03080, Korea
| | - Chae-Seo Rhee
- Department of Otorhinolaryngology, Seoul National University College of Medicine, Seoul National University Hospital, 103 Daehak-Ro, Jongno-Gu, Seoul, 03080, Korea
| | - Hyun Jik Kim
- Department of Otorhinolaryngology, Seoul National University College of Medicine, Seoul National University Hospital, 103 Daehak-Ro, Jongno-Gu, Seoul, 03080, Korea.
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Yang SK, Kim JW, Won TB, Rhee CS, Han YB, Cho SW. Differences in Clinical and Immunological Characteristics According to the Various Criteria for Tissue Eosinophilia in Chronic Rhinosinusitis With Nasal Polyps. Clin Exp Otorhinolaryngol 2023; 16:359-368. [PMID: 37641857 DOI: 10.21053/ceo.2023.00542] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Accepted: 08/23/2023] [Indexed: 08/31/2023] Open
Abstract
OBJECTIVES Several criteria exist for classifying chronic rhinosinusitis with nasal polyps (CRSwNP) as eosinophilic or non-eosinophilic. This study attempted to evaluate several criteria for defining eosinophilic CRSwNP from clinical and immunological perspectives. METHODS A cohort of 84 patients (73 patients with CRSwNP and 11 control patients) was retrospectively analyzed. Patients were divided into eosinophilic and non-eosinophilic CRSwNP based on four different criteria: eosinophils (EOS) accounting for more than 20% of the total inflammatory cells; ≥70 EOS per high-power field (HPF); >55 EOS/HPF; and ≥10 EOS/HPF. Preoperative clinical characteristics, the immunological profiles of 14 cytokines from nasal tissue, and postoperative outcomes were compared between eosinophilic and non-eosinophilic CRSwNP based on each criterion. These criteria were immunologically validated by using 14 cytokines to predict the performance of tissue eosinophilia with a random forest model. RESULTS Patients with eosinophilic CRSwNP were significantly older when the criterion of ≥10 EOS/HPF or EOS >20% was used. The number of patients with aspirin intolerance was significantly higher in eosinophilic CRSwNP based on the criterion of EOS >20%. From an immunological perspective, non-type 2 inflammatory cytokines were significantly higher in non-eosinophilic CRSwNP with the criterion of EOS >20% of the total inflammatory cells. In addition, the criterion of EOS >20% of the total inflammatory cells resulted in the best prediction of eosinophilic CRSwNP, with an accuracy of 88.10% and area under the curve of 0.94. CONCLUSION Clinical and immunological characteristics were different between eosinophilic and non-eosinophilic CRSwNP depending on a variety of criteria, and the. RESULTS of this study should be taken into account when choosing the criterion for defining eosinophilic CRSwNP and interpreting the data accordingly.
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Affiliation(s)
- Seung Koo Yang
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - Jeong-Whun Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
- Sensory Organ Research Institute, Seoul National University Medical Research Center, Seoul, Korea
| | - Tae-Bin Won
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - Chae-Seo Rhee
- Sensory Organ Research Institute, Seoul National University Medical Research Center, Seoul, Korea
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Yeon Bi Han
- Department of Pathology and Translational Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - Sung-Woo Cho
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
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Yang SK, Han DH. The Role of TRIM24 in Allergic Rhinitis. Allergy Asthma Immunol Res 2023; 15:543-544. [PMID: 37827975 PMCID: PMC10570779 DOI: 10.4168/aair.2023.15.5.543] [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] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 09/15/2023] [Accepted: 09/15/2023] [Indexed: 10/14/2023]
Affiliation(s)
- Seung Koo Yang
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Doo Hee Han
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea.
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Park JA, Cha H, Yang SK, Ryu HT, Kim DW, Hong SN, Yang MS, Kim DW. The Role of Fractional Exhaled Nitric Oxide in Diagnosing Asthmatic Type 2 Chronic Rhinosinusitis With Nasal Polyps. Am J Rhinol Allergy 2023:19458924231173205. [PMID: 37160729 DOI: 10.1177/19458924231173205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
BACKGROUND Fractional exhaled nitric oxide (FeNO) is useful in the management of asthma and predicting the efficacy of standard corticosteroids and biologics. However, the diagnostic value of FeNO in asthmatic chronic rhinosinusitis with nasal polyps (CRSwNP) remains unclear. OBJECTIVE We assessed FeNO levels in patients with CRSwNP and evaluated the diagnostic value of FeNO for screening type 2 CRSwNP (T2-CRSwNP) with asthma. METHODS We enrolled 94 patients who were diagnosed with CRSwNP and underwent functional endoscopic sinus surgery. FeNO levels, the blood eosinophil percentage, total IgE, spirometry tests (FEV1/FVC), Lund-Mackay CT score, and percentage of patients with comorbid asthma were compared among CRSwNP subgroups. Spearman rank correlation test was used to assess the degree of association between variables. ROC curve analysis was conducted to evaluate the diagnostic capability to differentiate T2-CRSwNP based on clinical and histological classifications. RESULTS FeNO levels and the blood eosinophil percentage were significantly higher in patients with T2-CRSwNP(h) based on histological data (P < .05). FeNO was correlated with the blood eosinophil percentage (r = 0.420, P < .001) and FEV1/FVC (r = -0.324, P = .001). A FeNO level of 27 ppb had a good ability to discriminate patients with asthmatic T2-CRSwNP(h) (AUC = 0.848; 95% CI = 0.7602-0.9361; sensitivity = 90.9%; specificity = 63.9%). The optimal cutoff values for FeNO and the blood eosinophil percentage for diagnosing asthmatic T2-CRSwNP(h) were 68 ppb and 5.6% (sensitivity = 95.5%; specificity = 86.1%; AUC = 0.931; 95% CI = 0.8832-0.9791). In the diagnosis of severe T2-CRSwNP(c) based on clinical data, a FeNO level of 36 ppb showed the highest AUC (0.816; 95% CI = 0.7173-0.914; sensitivity = 72.7%; specificity = 79.2%). CONCLUSION FeNO is a useful marker for screening asthmatic T2-CRSwNP even prior to biopsy or asthma evaluation and may assist in selecting a proper treatment.
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Affiliation(s)
- Jin-A Park
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University College of Medicine, Seoul National University Boramae Medical Center, Seoul, Republic of Korea
| | - Hyunkyung Cha
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University College of Medicine, Seoul National University Boramae Medical Center, Seoul, Republic of Korea
- Department of Otorhinolaryngology-Head and Neck Surgery, Soonchunhyang University Cheonan Hospital, Soonchunhyang University College of Medicine, Cheonan, Republic of Korea
| | - Seung Koo Yang
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University College of Medicine, Seoul National University Boramae Medical Center, Seoul, Republic of Korea
| | - Hyun Tae Ryu
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University College of Medicine, Seoul National University Boramae Medical Center, Seoul, Republic of Korea
| | - Do Won Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University College of Medicine, Seoul National University Boramae Medical Center, Seoul, Republic of Korea
| | - Seung-No Hong
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University College of Medicine, Seoul National University Boramae Medical Center, Seoul, Republic of Korea
- Sensory Organ Research Institute, Seoul National University Medical Research Center, Seoul, Republic of Korea
| | - Min Suk Yang
- Division of Allergy and Clinical Immunology, Department of Internal Medicine, Seoul National University College of Medicine, Seoul National University Boramae Medical Center, Seoul, Republic of Korea
| | - Dae Woo Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University College of Medicine, Seoul National University Boramae Medical Center, Seoul, Republic of Korea
- Sensory Organ Research Institute, Seoul National University Medical Research Center, Seoul, Republic of Korea
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Han SC, Yang SK, Han SY, Rhee CS, Choi Y, Shin CH, Lee YJ, Han DH. Investigating factors influencing post-operative growth in pre-pubertal children after adenotonsillectomy. Eur Arch Otorhinolaryngol 2023; 280:2841-2848. [PMID: 36656426 DOI: 10.1007/s00405-022-07817-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Accepted: 12/28/2022] [Indexed: 01/20/2023]
Abstract
PURPOSE To check the change in growth-for-age after adenotonsillectomy in pre-pubertal children and investigate the affecting factors. METHODS Two hundred and six pediatric patients who underwent adenotonsillectomy by a single surgeon between January 2011 and December 2014 were included for the retrospective cohort study. The z-scores of height-, weight-, and body mass index (BMI)-for-age were measured before adenotonsillectomy and 1 year after the operation. The Korean version of the obstructive sleep apnea-18 questionnaire (OSA-18), symptom questionnaire, physical examinations, demographic data, and pre-operative z-scores were used to analyze the factors affecting z-score change. RESULTS Among 206 pediatric patients, 167 patients were normal growth; 19 were undergrowth; and 20 were obese. After the operation, height, weight, and BMI z-scores all increased both in 167 normal-growth patients and 19 undergrowth patients (p value < 0.05). However, in 20 obese patients, only height z-score significantly increased (p value = 0.028). The multiple regression test showed that the sleep disturbance domain of OSA-18 was positively correlated with height z-score change (p value = 0.041), and age was negatively correlated with weight z-score change (p value = 0.016). Pre-operative BMI z-score was negatively correlated (p value = 0.019) and adenoid grade was positively correlated (p value = 0.023) with BMI z-score change. CONCLUSIONS These findings suggest that adenotonsillectomy may positively affect growth in pre-pubertal children, without undesirable weight gain. Additionally, the sleep disturbance domain of OSA-18 may play a role in predicting post-operative height increase in pre-pubertal children.
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Affiliation(s)
- Seung Cheol Han
- Department of Otorhinolaryngology, Seoul National University College of Medicine, Seoul National University Hospital, 101 Daehak-Ro, Jongno-Gu, Seoul, 03080, Korea
| | - Seung Koo Yang
- Department of Otorhinolaryngology, Seoul National University College of Medicine, Seoul National University Hospital, 101 Daehak-Ro, Jongno-Gu, Seoul, 03080, Korea
| | - Sang-Yoon Han
- Department of Otorhinolaryngology, Seoul National University College of Medicine, Seoul National University Hospital, 101 Daehak-Ro, Jongno-Gu, Seoul, 03080, Korea
| | - Chae-Seo Rhee
- Department of Otorhinolaryngology, Seoul National University College of Medicine, Seoul National University Hospital, 101 Daehak-Ro, Jongno-Gu, Seoul, 03080, Korea.,Graduate School of Immunology, Seoul National University College of Medicine, Seoul, Korea.,Institute of Allergy and Clinical Immunology and Sensory Organ Research Institute, Seoul National University Biomedical Research Center, Seoul, Korea
| | - Yunhee Choi
- Medical Research Collaborating Center, Seoul National University Hospital, Seoul, Korea
| | - Choong Ho Shin
- Department of Pediatrics, Seoul National University College of Medicine, Seoul National University Children's Hospital, 101 Daehak-Ro, Jongno-Gu, Seoul, 03080, Korea
| | - Yun Jeong Lee
- Department of Pediatrics, Seoul National University College of Medicine, Seoul National University Children's Hospital, 101 Daehak-Ro, Jongno-Gu, Seoul, 03080, Korea.
| | - Doo Hee Han
- Department of Otorhinolaryngology, Seoul National University College of Medicine, Seoul National University Hospital, 101 Daehak-Ro, Jongno-Gu, Seoul, 03080, Korea.
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Kim DW, Yang SK. Application of Biologics in Treating Chronic Rhinosinusitis With Nasal Polyps in Asian Populations. Clin Exp Otorhinolaryngol 2022; 15:125-126. [PMID: 35644607 PMCID: PMC9149238 DOI: 10.21053/ceo.2022.00612] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 05/09/2022] [Indexed: 01/12/2023] Open
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Yang SK, Cho SH, Kim DW. Interpretation of Clinical Efficacy of Biologics in Chronic Rhinosinusitis With Nasal Polyps via Understanding the Local and Systemic Pathomechanisms. Allergy Asthma Immunol Res 2022; 14:465-478. [PMID: 36174990 PMCID: PMC9523422 DOI: 10.4168/aair.2022.14.5.465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 09/02/2022] [Accepted: 09/05/2022] [Indexed: 11/29/2022]
Abstract
Chronic rhinosinusitis with nasal polyps (CRSwNP) is a heterogeneous disease treated with medication or surgery. For recalcitrant type 2 CRSwNP, biological agents have been effectively used to improve nasal polyp score, nasal congestion score, daily symptoms related to CRSwNP, and time to systemic corticosteroid use or revision surgery. Although general guidelines for using biologics to treat CRSwNP were proposed by the European Position Paper on Rhinosinusitis and Nasal Polyps in 2020 and various studies have tested their efficacy, there is much more to learn about biologics—specific indication and choice of biologics based on the endotypes, for instance. Understanding the vascular distribution of monoclonal antibodies and the differences in the vascularity of the non-polyp mucosa and nasal polyp tissue will not only aid understanding of each biologic’s clinical effect but also provide insights to establishing a more personalized approach to treating recalcitrant CRSwNP with biologics.
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Affiliation(s)
- Seung Koo Yang
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul National University College of Medicine, Seoul, Korea
| | - Seong-Ho Cho
- Division of Allergy-Immunology, Department of Internal Medicine, University of South Florida Morsani College of Medicine, Tampa, FL, USA
| | - Dae Woo Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul National University College of Medicine, Seoul, Korea
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Yang SK, Hong SN. Complications After Inadequate Treatment of Nasal Bone Fracture Combined With Septal Fracture: A Case Report. J Rhinol 2021. [DOI: 10.18787/jr.2021.00352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
In treating a nasal bone, an incomplete nasal bone reduction can result in nasal deformity, both aesthetic and functional, requiring a secondary operation. A 60-year-old female with a traumatic comminuted nasal bone fracture with septal fracture was initially treated with closed reduction, which later resulted in a saddle nose and a completely occluded nasal cavity. Later, the patient underwent a revision operation of extracorporeal septorhinoplasty with rib cartilage graft, and the postoperative course was uneventful. Herein, we present a case of complications occurring after inadequate treatment of septal fracture. Physicians should thoroughly evaluate the extent of the nasal bone fracture, including the integrity of the nasal septum, and manage accordingly.
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Affiliation(s)
- Sung-Woo Cho
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Seung Koo Yang
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Bundang Hospital, Seongnam, Korea
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12
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Kang DU, Park JC, Hwang SW, Park SH, Yang DH, Kim KJ, Ye BD, Myung SJ, Yang SK, Byeon JS. Long-term clinical outcomes of endoscopic submucosal dissection for colorectal neoplasia with or without the hybrid technique. Colorectal Dis 2020; 22:2008-2017. [PMID: 32866340 DOI: 10.1111/codi.15339] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 07/04/2020] [Accepted: 08/18/2020] [Indexed: 12/12/2022]
Abstract
AIM The main aim of this study was to compare the long-term outcome of a conventional colorectal endoscopic submucosal dissection (ESD) in which submucosal dissection was continued throughout until the completion of resection (ESD-T) to hybrid endoscopic submucosal dissection (ESD-H) in the colorectum. METHOD Medical records of 836 colorectal neoplasia patients treated by ESD-T or ESD-H were reviewed. ESD-H was defined as colorectal ESD with additional snaring in the final stage of the procedure. Primary outcomes were the overall and metastatic recurrence rates. Secondary outcomes were short-term outcomes such as the en bloc resection rate, procedure time and adverse events. RESULTS The overall recurrence rate was higher in the ESD-H than in the ESD-T group (5.7% vs 0.7%, P = 0.001). The metastatic recurrence rate showed no significant difference between these groups (1.4% vs 1.4%, P = 1.000). Multivariate analysis revealed that a failed en bloc resection (hazard ratio 24.097; 95% CI 5.446-106.237; P < 0.001) and larger tumour size (hazard ratio 1.042; 95% CI 1.014-1.070; P = 0.003) were independently associated with overall recurrence. The ESD-H group showed a lower en bloc resection rate (56.8% vs 96.5%, P < 0.001), shorter procedure time (45.6 vs 54.3 min, P < 0.001) and higher perforation rate (10.3% vs 6.0%, P = 0.029). CONCLUSION Although long-term outcomes in terms of overall recurrence are inferior following ESD-H, a failed en bloc resection and large tumour size are the only independent risk factors for recurrence. Further investigations are warranted to improve the long-term outcomes of ESD-H.
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Affiliation(s)
- D U Kang
- Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - J C Park
- Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - S W Hwang
- Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - S H Park
- Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - D H Yang
- Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - K J Kim
- Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - B D Ye
- Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - S J Myung
- Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - S K Yang
- Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - J S Byeon
- Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
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Lee DY, Song S, Yang SK, Lee MH, Kim JE, Jung YH, Kwon TK. Prediction of Malignancy in Salivary Gland Tumors by a New Cytology Reporting System. Ear Nose Throat J 2020; 100:NP432-NP437. [PMID: 32453644 DOI: 10.1177/0145561320927912] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
OBJECTIVES The aim of this study was to analyze the risk of malignancy in salivary gland tumors on the basis of the Milan System for Reporting Salivary Gland Cytopathology. METHODS A retrospective review was performed of the charts of patients with salivary gland tumors in whom the final diagnosis was confirmed by surgical excision. Preoperative fine needle aspiration results were categorized according to the Milan System for Reporting Salivary Gland Cytopathology: non-diagnostic (category I), nonneoplastic (category II), atypia of undetermined significance (category III), neoplasm (category IV), suspicious for malignancy (category V), and malignant (category VI). Fine needle aspiration and final diagnosis were compared, and the risk of malignancy and operative/oncological outcomes were analyzed. RESULTS A total of 288 patients were enrolled in this study. Postoperative histopathologic salivary gland malignancies were found in 30 (10.4%) patients. Risk of malignancy was 7.1%, 0%, 48.0%, 4.8%, 88.7%, and 100% in categories I, II, III, IV, V, and VI, respectively. The most common malignant tumor in category III was salivary duct carcinoma (37.5%), followed by acinic cell carcinoma (25.0%), mucoepidermoid carcinoma (25.0%), and squamous cell carcinoma (12.5%). The 5-year survival rate of patients with malignant tumors showed no statistical difference between category III and category V/VI (P = .140). Risk of malignancy was 88.9% and 100% in category V and VI, respectively. CONCLUSIONS A half of atypia of undetermined significance (category III) cases were malignant. Once diagnosed, the prognosis of malignant tumor in category III was similar with that in category V/VI.
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Affiliation(s)
- Doh Young Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Boramae Medical Center, Dongjak-gu, South Korea
| | - Seulki Song
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Boramae Medical Center, Dongjak-gu, South Korea
| | - Seung Koo Yang
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Boramae Medical Center, Dongjak-gu, South Korea
| | - Min Hyung Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Boramae Medical Center, Dongjak-gu, South Korea
| | - Ji Eun Kim
- Department of Pathology, Seoul National University Boramae Medical Center, Dongjak-gu, South Korea
| | - Young Ho Jung
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Bundang Hospital, Gyeonggi-do, South Korea
| | - Tack-Kyun Kwon
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Boramae Medical Center, Dongjak-gu, South Korea
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Kong IG, Kim D, Eun KM, Yang SK, Kim M, Oh H, Kim DW. Receptor activator of nuclear factor κB ligand is a biomarker for osteitis of chronic rhinosinusitis. Int Forum Allergy Rhinol 2020; 10:364-373. [DOI: 10.1002/alr.22481] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Revised: 10/10/2019] [Accepted: 10/16/2019] [Indexed: 12/14/2022]
Affiliation(s)
- Il Gyu Kong
- Department of Otorhinolaryngology–Head and Neck SurgeryNational Medical Center Seoul Korea
| | - Dong‐Kyu Kim
- Department of Otorhinolaryngology–Head and Neck SurgeryChuncheon Sacred Heart Hospital, Hallym University College of Medicine Chuncheon Korea
| | - Kyoung Mi Eun
- Department of Otorhinolaryngology–Head and Neck SurgeryBoramae Medical Center, Seoul National University College of Medicine Seoul Korea
| | - Seung Koo Yang
- Department of Otorhinolaryngology–Head and Neck SurgeryBoramae Medical Center, Seoul National University College of Medicine Seoul Korea
| | - Minju Kim
- Department of Otorhinolaryngology–Head and Neck SurgeryBoramae Medical Center, Seoul National University College of Medicine Seoul Korea
| | - Heonjeong Oh
- Department of Otorhinolaryngology–Head and Neck SurgeryBoramae Medical Center, Seoul National University College of Medicine Seoul Korea
| | - Dae Woo Kim
- Department of Otorhinolaryngology–Head and Neck SurgeryBoramae Medical Center, Seoul National University College of Medicine Seoul Korea
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Kim DK, Kim JY, Han YE, Kim JK, Lim HS, Eun KM, Yang SK, Kim DW. Elastase-Positive Neutrophils Are Associated With Refractoriness of Chronic Rhinosinusitis With Nasal Polyps in an Asian Population. Allergy Asthma Immunol Res 2020; 12:42-55. [PMID: 31743963 PMCID: PMC6875473 DOI: 10.4168/aair.2020.12.1.42] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 08/25/2019] [Accepted: 08/30/2019] [Indexed: 12/13/2022]
Abstract
Purpose Various immune cells, including eosinophils and neutrophils, are known to contribute to the development of chronic rhinosinusitis with nasal polyps (CRSwNP). However, the current understanding of the role of neutrophils in the development of CRSwNP still remains unclear. Therefore, we investigated risk factors for refractoriness of CRSwNP in an Asian population. Methods Protein levels of 17 neutrophil-related mediators in nasal polyps (NPs) were determined by multiplex immunoassay, and exploratory factor analysis using principal component analysis was performed. Immunofluorescence analysis was conducted to detect human neutrophil elastase (HNE) or myeloperoxidase (MPO)-positive cells. Tissue eosinophilic nasal polyp (ENP) and tissue neutrophilia (Neuhigh) were defined as greater than 70 eosinophils and 20 HNE-positive cells, otherwise was classified into non-eosinophilic nasal polyp (NENP) and absence of tissue neutrophilia (Neulow). Results In terms of disease control status, NENP-Neulow patients showed the higher rate of disease control than NENP-Neuhigh and ENP-Neuhigh patients. Linear by linear association demonstrated the trend in refractoriness from NENP-Neulow to NENP-Neuhigh or ENP-Neulow to ENP-Neuhigh. When multiple logistic regression was performed, tissue neutrophilia (hazard ratio, 4.38; 95% confidence interval, 1.76-10.85) was found as the strongest risk factor for CRSwNP refractoriness. Additionally, exploratory factor analysis revealed that interleukin (IL)-18, interferon-γ, IL-1Ra, tumor necrosis factor-α, oncostatin M, and MPO were associated with good disease control status, whereas IL-36α and IL-1α were associated with refractory disease control status. In subgroup analysis, HNE-positive cells and IL-36α were significantly upregulated in the refractory group (P = 0.0132 and P = 0.0395, respectively), whereas MPO and IL-18 showed higher expression in the controlled group (P = 0.0002 and P = 0.0009, respectively). Moreover, immunofluorescence analysis revealed that IL-36R+HNE+-double positive cells were significantly increased in the refractory group compared to the control group. We also found that the ratio of HNE-positive cells to α1 anti-trypsin was increased in the refractory group. Conclusions Tissue neutrophilia had an influence on treatment outcomes in the Asian CRSwNP patients. HNE-positive cells and IL-36α may be biomarkers for predicting refractoriness in Asians with CRSwNP. Additionally, imbalances in HNE and α1 anti-trypsin may be associated with pathophysiology of neutrophilic chronic rhinosinusitis.
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Affiliation(s)
- Dong Kyu Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Hallym University Chuncheon Sacred Heart Hospital, Chuncheon, Korea.,Institute of New Frontier Research, Hallym University College of Medicine, Chuncheon, Korea
| | - Jin Youp Kim
- Department of Otorhinolaryngology, Armed Forces Capital Hospital, Seongnam, Korea
| | - Young Eun Han
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul National University College of Medicine, Seoul, Korea
| | - Joon Kon Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul National University College of Medicine, Seoul, Korea
| | - Hee Suk Lim
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul National University College of Medicine, Seoul, Korea
| | - Kyoung Mi Eun
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul National University College of Medicine, Seoul, Korea
| | - Seung Koo Yang
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul National University College of Medicine, Seoul, Korea
| | - Dae Woo Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul National University College of Medicine, Seoul, Korea.
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Seong J, Yang SK, Jang P, Lee SY, Carandang M, Choi BY. Clinical Factors Influencing the Trial and Purchase of Bilateral Microphones with Contralateral Routing of Signal in Patients with Asymmetric Sensorineural Hearing Loss. J Audiol Otol 2019; 24:29-34. [PMID: 31852175 PMCID: PMC6949478 DOI: 10.7874/jao.2019.00409] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 11/11/2019] [Indexed: 11/22/2022] Open
Abstract
Background and Objectives Bilateral microphones with contralateral routing of signal (BiCROS) hearing aid is an option for hearing rehabilitation in individuals with asymmetric sensorineural hearing loss (ASNHL). The clinical factors influencing the trial and purchase of BiCROS were investigated. Subjects and Methods We reviewed the medical records of 78 patients with ASNHL who were recommended to use BiCROS and analyzed the demographic and audiological factors influencing the trial and purchase of BiCROS. Results Among the 78 patients, 52 (66.7%) availed of the free BiCROS trial and 21 (26.9%) purchased BiCROS. The mean pure tone audiometry (PTA) air conduction (AC) threshold of the better- and worse-hearing ears were 44.2±12.8 dB and 90.7±22.5 dB HL, respectively. The decision for trial or purchase of BiCROS was not influenced by age, sex, duration of hearing loss of the worse-hearing ear, or PTA AC threshold or speech discrimination score of both ears. The first and third quartiles of the PTA AC thresholds for the better-hearing ear of BiCROS buyers were 38.75 dB and 53.75 dB HL, respectively. The counterpart values for the worse-hearing ear were 72.50 dB and 118.75 dB HL, respectively. Conclusions The clinical factors analyzed in this study were found to be irrelevant to the trial and purchase of BiCROS in patients with ASNHL. Nevertheless, the distribution range of the auditory thresholds of the subjects using BiCROS can be a useful basis for the counseling of patients with ASNHL and selection of candidates for BiCROS use.
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Affiliation(s)
- Jeon Seong
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - Seung Koo Yang
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - Pilkeun Jang
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - Sang-Yeon Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - Marge Carandang
- Department of Otorhinolaryngology-Head and Neck Surgery, East Avenue Medical Center, Metro Manila, Philippines
| | - Byung-Yoon Choi
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
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Kim JY, Han YE, Seo Y, Choe G, Kim MK, Huh G, Cho D, Yang SK, Kang SH, Kim DW. Revisiting the Clinical Scoring System for the Prognosis of Chronic Rhinosinusitis with Nasal Polyps. Yonsei Med J 2019; 60:578-584. [PMID: 31124342 PMCID: PMC6536397 DOI: 10.3349/ymj.2019.60.6.578] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 04/10/2019] [Accepted: 04/12/2019] [Indexed: 12/12/2022] Open
Abstract
PURPOSE To evaluate the Japanese Epidemiological Survey of Refractory Eosinophilic Chronic Rhinosinusitis (JESREC) classification, a clinical scoring system, for predicting disease control status in chronic rhinosinusitis with nasal polyps (CRSwNP) and to investigate prognostic factors. MATERIALS AND METHODS In total, 134 CRSwNP patients who underwent functional endoscopic sinus surgery after maximal medical treatment were enrolled. These patients were categorized into four groups according to JESREC classification: 1) non-eosinophilic CRSwNP (non-ECRSwNP), 2) mild eosinophilic CRSwNP (ECRSwNP), 3) moderate ECRSwNP, and 4) severe ECRSwNP. Disease control status among the patients was evaluated at 1 year after surgery, and the patients were divided into two groups (disease-controlled and disease-uncontrolled groups) for the investigation of prognostic factors. RESULTS There was no significant difference in disease control status between non-ECRSwNP and ECRSwNP groups (p=0.970). Age, Lund-Mackay CT scores, global osteitis scores, tissue neutrophil count, and tissue eosinophil count were associated with disease control status. In subgroup analysis of the non-ECRSwNP group, only high tissue neutrophil count was related with disease control status, whereas for the ECRSwNP group, young age, high Lund-Mackay CT scores, high global osteitis scores, and high tissue and blood eosinophil counts were associated with disease control status. CONCLUSION No difference in disease control status was identified between non-ECRSwNP and ECRSwNP cases. Tissue neutrophilia, however, appeared to be associated with disease control status in non-ECRSwNP cases, whereas tissue and blood eosinophilia was associated with ECRSwNP cases.
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Affiliation(s)
- Jin Youp Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Boramae Medical Center, Seoul Metropolitan Government-Seoul National University, Seoul, Korea
- Department of Otorhinolaryngology, Armed Forces Capital Hospital, Seongnam, Korea
| | - Young Eun Han
- Department of Otorhinolaryngology-Head and Neck Surgery, Boramae Medical Center, Seoul Metropolitan Government-Seoul National University, Seoul, Korea
| | - Yuju Seo
- Department of Otorhinolaryngology-Head and Neck Surgery, Boramae Medical Center, Seoul Metropolitan Government-Seoul National University, Seoul, Korea
| | - Goun Choe
- Department of Otorhinolaryngology-Head and Neck Surgery, Boramae Medical Center, Seoul Metropolitan Government-Seoul National University, Seoul, Korea
| | - Min Kyung Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Boramae Medical Center, Seoul Metropolitan Government-Seoul National University, Seoul, Korea
| | - Gene Huh
- Department of Otorhinolaryngology-Head and Neck Surgery, Boramae Medical Center, Seoul Metropolitan Government-Seoul National University, Seoul, Korea
| | - Deuktae Cho
- Department of Otorhinolaryngology-Head and Neck Surgery, Boramae Medical Center, Seoul Metropolitan Government-Seoul National University, Seoul, Korea
| | - Seung Koo Yang
- Department of Otorhinolaryngology-Head and Neck Surgery, Boramae Medical Center, Seoul Metropolitan Government-Seoul National University, Seoul, Korea
| | - Seung Heon Kang
- Department of Otorhinolaryngology-Head and Neck Surgery, Boramae Medical Center, Seoul Metropolitan Government-Seoul National University, Seoul, Korea
| | - Dae Woo Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Boramae Medical Center, Seoul Metropolitan Government-Seoul National University, Seoul, Korea.
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Kim WY, Hong SN, Yang SK, Nam KJ, Lim KH, Hwang SJ, Seo MY, Lee SH. The effect of body position on airway patency in obstructive sleep apnea: CT imaging analysis. Sleep Breath 2019; 23:911-916. [PMID: 31111410 DOI: 10.1007/s11325-019-01863-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 03/09/2019] [Accepted: 05/08/2019] [Indexed: 10/26/2022]
Abstract
PURPOSE Positional change during sleep influences upper airway patency. However, few studies have used imaging techniques to demonstrate the change. This study aims to determine the effect of positional change on the upper airway space. METHODS A total of 118 subjects with sleep breathing disorders were analyzed. Participants underwent upper airway CT scans in the supine and lateral decubitus positions (right and left). They were divided into non-obstructive sleep apnea (n = 28) and obstructive sleep apnea (n = 90) groups. We measured the minimal cross-sectional area of the retropalatal/retroglossal spaces and compared the differences of those two spaces in the supine and lateral positions. CT was performed while patients were awake. RESULTS The minimal cross-sectional area in the OSA group was significantly smaller than non-OSA group in both supine (median[interquartile range], 8.3[0.0-25.1] vs 22.2[1.0-39.6]; P = 0.018) and lateral decubitus positions (5.2[0.0-16.9] vs 21.3[6.1-38.4]; P = 0.002). As the body position of OSA patients shifted from supine to lateral, the retroglossal space increased significantly (67.3[25.1-116.3] vs 93.3[43.4-160.1]; P < 0.001). However, there was no significant difference in the retropalatal space between the supine and lateral decubitus positions. CONCLUSIONS Positional change from the supine to lateral decubitus position expands the upper airway lumen, especially the retroglossal space. Positional OSA may be related to anatomical change of the upper airway lumen based on body position.
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Affiliation(s)
- Woo Young Kim
- Department of Internal Medicine, Westchester Medical Center and New York Medical College, Valhalla, NY, USA
| | - Seung-No Hong
- Department of Otorhinolaryngology, Boramae Medical Center, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Seung Koo Yang
- Department of Otorhinolaryngology, Boramae Medical Center, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Kuk Jin Nam
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University of Ansan Hospital, 123, Jeokgeum-ro, Danwon-gu, Ansan-si, Gyeonggi-do, 15355, South Korea
| | - Kang Hyeon Lim
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University of Ansan Hospital, 123, Jeokgeum-ro, Danwon-gu, Ansan-si, Gyeonggi-do, 15355, South Korea
| | - Sun Jin Hwang
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University of Ansan Hospital, 123, Jeokgeum-ro, Danwon-gu, Ansan-si, Gyeonggi-do, 15355, South Korea
| | - Min Young Seo
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University of Ansan Hospital, 123, Jeokgeum-ro, Danwon-gu, Ansan-si, Gyeonggi-do, 15355, South Korea
| | - Seung Hoon Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University of Ansan Hospital, 123, Jeokgeum-ro, Danwon-gu, Ansan-si, Gyeonggi-do, 15355, South Korea.
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Yang SK, Yoon CJ. Percutaneous Pancreatic Stent Placement for Postoperative Pancreaticojejunostomy Stenosis: A Case Report. Korean J Radiol 2016; 17:797-800. [PMID: 27587970 PMCID: PMC5007408 DOI: 10.3348/kjr.2016.17.5.797] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2016] [Accepted: 06/05/2016] [Indexed: 11/15/2022] Open
Abstract
Stenosis of the pancreatico-enteric anastomosis is one of the major complications of pancreaticoduodenectomy (PD). Endoscopic stent placement, has limited success rate as a nonsurgical treatment due to altered gastrointestinal anatomy. Percutaneous treatment is rarely attempted due to the technical difficulty in accessing the pancreatic duct. We reported a case of pancreaticojejunostomy stenosis after PD, in which a pancreatic stent was successfully placed using a rendezvous technique with a dual percutaneous approach.
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Affiliation(s)
- Seung Koo Yang
- Seoul National University College of Medicine, Seoul 03080, Korea
| | - Chang Jin Yoon
- Seoul National University College of Medicine, Seoul 03080, Korea.; Department of Radiology, Seoul National University Bundang Hospital, Seongnam 13620, Korea
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Yin YJ, Zhang Q, Yang YX, Yang SK, Wang HF, Shi JX, Wang ZM, Yang YH, Lin Y, Li ZY, Yang YR. [Study of the genes correlated with cyst calcification in patients with cystic echinococcosis]. ZHONGHUA YU FANG YI XUE ZA ZHI [CHINESE JOURNAL OF PREVENTIVE MEDICINE] 2016; 50:434-438. [PMID: 27141900 DOI: 10.3760/cma.j.issn.0253-9624.2016.05.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
OBJECTIVE To explore the genes (biomarkers) correlated with cyst calcification in patients with cystic echinococcosis (CE), and to provide the evidence for the judgment on the patients' prognosis at molecular level. METHODS The liver tissues from 32 patients with liver CE (10 cases for mRNA microarray and 22 cases for real-time PCR analysis) and 11 patients with hepatic cystadenoma were collected from three hospitals in Ningxia from June, 2013 to December, 2014. A comparison of the different gene-expressions between five patients with calcified lesions and five cases with no calcification was carried out using Significant Analysis of Microarrays (SAM) to select a subset of differentially expressed genes (DEGs) . Fold-change analysis was used to assess the changes of the expression quantity in the same genes between two groups. The verification was conducted among the liver tissues from 22 patients with liver CE (11 in the group of calcified or 11 in that of non-calcified) by real-time quantitative PCR (RT-qPCR). With GAPDH as a reference-gene and the liver tissues from 11 cases with hepatic cystadenoma as standardized control groups, the relative expressions of galecitin-4 (LGALS4) and acid ceramidase (ASAH1) in patients with calcified and non-calcified were calculated, respectively. The differences between two groups were compared using t'-test. RESULTS Five screened genes presented siginificantly different expressions all had showed the low-regulated expressions in the calcified group, with the most distinct low-regulation of LGALS4 and ASAH1 whose fold changes were 0.008 8, and 0.020 3, respectively. The verification by RT-qPCR illustrated that the relative expression of LGALS4 was showed at level of 0.49±0.27 amongst patients with calcified, and at level of 2.70±2.61 amongst non-calcified individuals,,indicating significant differences between two groups (t=-2.59, P=0.026); while the ASAH1 was relatively expressed at levels of 1.36±0.33 and of 1.68±0.67 amongst patients with calcified and non-calcified, respectively, showing insignificant changes statistically (t=-1.44, P=0.167). In the non-calcified group, both LGALS4 and ASAH1 genes expression quantities had a small fluctuation range, but with positively correlated trend (r=0.91, P=0.001), which indicated that a patient with the low LGALS4 expression quantity also had a relative low level of ASAH1 expression quantity. CONCLUSIONS Low expression quantity of LGALS4 and ASAH1 genes in patients with CE in the calcification might be potential biomarker for an indication of the disease self-healing.
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Affiliation(s)
- Y J Yin
- Department of Pathogen and Immunology, Ningxia Medical University, Yinchuan 750004, China
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Chai JY, Yang SK, Kim JW, Choi SL, Song GY, Jung BK, Kim MJ, Cho J, Kim DG, Sohn WM, Jeoung HG, Cho S, Park JB, Hong S, Htoon TT, Tin HH. High Prevalence of Enterobius vermicularis Infection among Schoolchildren in Three Townships around Yangon, Myanmar. Korean J Parasitol 2015; 53:771-5. [PMID: 26797448 PMCID: PMC4725233 DOI: 10.3347/kjp.2015.53.6.771] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Revised: 11/07/2015] [Accepted: 11/07/2015] [Indexed: 11/23/2022]
Abstract
In order to determine the status of Enterobius vermicularis infection among schoolchildren in suburban areas of Myanmar, 761 primary schoolchildren in 3 different townships around Yangon City were subjected to a survey using cello-tape anal swabs. The subjected schoolchildren were 383 boys and 378 girls who were 5-7 years of age. Only 1 anal swab was obtained from each child. The overall egg positive rate of E. vermicularis was 47.2% (359 positives), and sex difference was not remarkable (48.6% in boys and 45.8% in girls). However, the positive rate was the highest in South Dagon (54.6%) followed by Hlaing Thayar (43.8%) and North Dagon (34.8%). This difference was highly correlated with the living standards of the people in each township. Nucleotide sequence of the 5S rDNA from the eggs on the cello-tape (2 children) revealed 99.7% identity with that of E. vermicularis reported in GenBank. The results indicated that E. vermicularis infection is highly prevalent among primary schoolchildren around Yangon, Myanmar.
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Affiliation(s)
- Jong-Yil Chai
- Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Seung Koo Yang
- Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Jae Won Kim
- Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Soo-Lyoen Choi
- Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Gyu-Young Song
- Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Bong-Kwang Jung
- Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Min-Jae Kim
- Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Jaeeun Cho
- Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Deok-Gyu Kim
- Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Woon-Mok Sohn
- Department of Parasitology and Tropical Medicine, and Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju 52727, Korea
| | - Hoo-Gn Jeoung
- Korea Association of Health Promotion, Seoul 07653, Korea
| | - Seon Cho
- Korea Association of Health Promotion, Seoul 07653, Korea
| | - Jong-Bok Park
- Korea Association of Health Promotion, Seoul 07653, Korea
| | - Sooji Hong
- Korea Association of Health Promotion, Seoul 07653, Korea
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Yang SK, Tan N, Yan XM, Chen F, Long W, Lin YC. Thorium(IV) removal from aqueous medium by citric acid treated mangrove endophytic fungus Fusarium sp. #ZZF51. Mar Pollut Bull 2013; 74:213-219. [PMID: 23871201 DOI: 10.1016/j.marpolbul.2013.06.055] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2013] [Revised: 06/23/2013] [Accepted: 06/26/2013] [Indexed: 06/02/2023]
Abstract
Thorium(IV) biosorption is investigated by citric acid treated mangrove endophytic fungus Fussarium sp. #ZZF51 (CA-ZZF51) from South China Sea. The biosorption process was optimized at pH 4.5, equilibrium time 90 min, initial thorium(IV) concentration 50 mg L(-1) and adsorbent dose 0.6 g L(-1) with 90.87% of removal efficiency and 75.47 mg g(-1) of adsorption capacity, which is obviously greater than that (11.35 mg g(-1)) of the untreated fungus Fussarium sp. #ZZF51 for thorium(IV) biosorption under the condition of optimization. The experimental data are analyzed by using isotherm and kinetic models. Kinetic data follow the pseudo-second-order model and equilibrium data agree very well with the Langmuir model. In addition, FTIR analysis indicates that hydroxyl, amino, and carbonyl groups act as the important roles in the adsorption process.
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Affiliation(s)
- S K Yang
- School of Chemistry and Chemical Engineering, University of South China, Hengyang, Hunan 421001, China.
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23
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Park SH, Yang SK, Kim MJ, Yang DH, Jung KW, Kim KJ, Ye BD, Byeon JS, Myung SJ, Kim JH. Long term follow-up of appendiceal and distal right-sided colonic inflammation. Endoscopy 2012; 44:95-8. [PMID: 22198779 DOI: 10.1055/s-0031-1291443] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
The aim of this study was to investigate the possibility of appendiceal orifice inflammation (AOI) as a preceding lesion in the development of ulcerative colitis. A total of 20 patients were identified (mean age 41.2 years; 11 males) who had ulcerative colitis-like inflammatory lesions at the appendiceal orifice without concomitant typical features of ulcerative colitis, such as rectal involvement. A total of 19 patients were followed up endoscopically for a mean duration of 18.4 months (range 2 - 84 months). Typical ulcerative colitis developed in five patients (25 %; four proctitis, one pancolitis) in a mean time of 18.4 months (range 2 - 36 months). Negative conversion of all inflammatory lesions occurred in seven patients (35 %) after a mean follow-up of 20 months (range 3 - 84 months). In the remaining seven patients (35 %), initial lesions did not progress to ulcerative colitis and did not go into remission during a mean follow-up of 16.9 months (range 2 - 42 months). These results suggest that, at least in some cases, AOI precedes development of ulcerative colitis.
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Affiliation(s)
- S H Park
- Department of Gastroenterology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
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Yang SK, Kim MK, Seo YW, Choi KJ, Lee ST, Kwak YS, Lee YH. Soil microbial community analysis of between no-till and tillage in a controlled horticultural field. World J Microbiol Biotechnol 2011; 28:1797-801. [PMID: 22805962 DOI: 10.1007/s11274-011-0933-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2011] [Accepted: 10/25/2011] [Indexed: 11/29/2022]
Abstract
The present study evaluated the changes of soil microbial communities that were subjected to no-till and compared the results to those subject to tillage for organic farming in a controlled horticultural field by fatty acid methyl ester. Fungi (P < 0.001), gram-positive bacteria (P < 0.001), arbuscular mycorrhizal fungi (P < 0.01), and actinomycetes (P < 0.01) in the no-till soils were significantly larger than those in the tillage soils. The no-till in the subsoil had a significantly lower ratio of cy17:0 to 16:1ω7c compared to that of tillage, indicating that microbial stress decreased because the soils were not disturbed (P < 0.05). Fungi should be considered as a potential factor responsible for the obvious microbial community differentiation that was observed between the no-till and tillage areas in a controlled horticultural field.
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Affiliation(s)
- Seung Koo Yang
- Environment-Friendly Agriculture Research Institute, Jeollanam-do Agricultural Research and Extension Services, Naju, 520-715, Republic of Korea
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25
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Yang YR, Williams GM, Craig PS, Sun T, Yang SK, Cheng L, Vuitton DA, Giraudoux P, Li X, Hu S, Liu X, Pan X, McManus DP. Hospital and community surveys reveal the severe public health problem and socio-economic impact of human echinococcosis in Ningxia Hui Autonomous Region, China. Trop Med Int Health 2006; 11:880-8. [PMID: 16772010 DOI: 10.1111/j.1365-3156.2006.01633.x] [Citation(s) in RCA: 26] [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: 11/28/2022]
Abstract
A comprehensive study of human echinococcosis (caused by Echinococcus granulosus or E. multilocularis), including assessment of hospital records, community surveys and patient follow-up, was conducted in Ningxia Hui Autonomous Region (NHAR), China. In contrast to hospital records that showed 96% of echinococcosis cases were caused by cystic echinococcosis (CE), 56% of cases detected in active community surveys were caused by alveolar echinococcosis (AE). The AE and CE cases co-existed frequently in the same village, even occurring in the same patient. A serious public health problem caused by echinococcosis was evident in southern NHAR, typified by: a long diagnostic history for both AE and CE (7.5 years) compared with a shorter treatment history (4.7 years); a significant mortality rate (39%) caused by AE in one surveyed village, where patients had no previous access to treatment; family aggregation of CE and AE cases; a high proportion of both AE (62.5%) and CE (58%) in females; a high rate of recurrent surgery (30%) for CE demonstrated by surgical records; and frequent symptomatic recurrences (51%) because of discontinuous or sporadic access to chemotherapy for AE. The disease burden for both human AE and CE is thus very severe among these rural communities in NHAR, and this study provides the first attempt to determine the costs of morbidity and surgical intervention of human CE and AE cases both at the hospital and community level in this setting. This information may be useful for assessing the cost effectiveness of designing effective public health programs to control echinococcosis in this and other endemic areas in China and elsewhere.
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Affiliation(s)
- Y R Yang
- Molecular Parasitology Laboratory, Queensland Institute of Medical Research and School of Population Health, Brisbane, Australia
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Park DI, Kim YH, Kim HS, Kim WH, Kim TI, Kim HJ, Yang SK, Byeon JS, Lee MS, Jung IK, Chung MK, Jung SA, Jeen YT, Choi JH, Choi H, Han DS, Song JS. Diagnostic yield of advanced colorectal neoplasia at colonoscopy, according to indications: an investigation from the Korean Association for the Study of Intestinal Diseases (KASID). Endoscopy 2006; 38:449-55. [PMID: 16767578 DOI: 10.1055/s-2006-925227] [Citation(s) in RCA: 13] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
BACKGROUND AND STUDY AIMS The factors that more accurately predict the detection of colorectal cancers and adenomas at colonoscopy are different. We conducted a prospective multicenter study to evaluate which indications were most closely associated with advanced colorectal neoplasm (CRN), including colorectal cancer, in a group of patients undergoing colonoscopy. PATIENTS AND METHODS The 17 468 patients were enrolled in this study between July 2003 and March 2004, from 11 tertiary medical centers in Korea. They were recruited according to 11 itemized colonoscopic indications. The term "advanced adenoma" refers here to tubular adenomas of diameter of 11 mm or more, or to tubulovillous, villous, or severely dysplastic adenomas, irrespective of their size. Cancer was defined as the invasion of malignant cells beyond the muscularis mucosa. Advanced CRN was defined as advanced adenoma or invasive cancer. RESULTS Advanced CRN was found in 1227/17 307 patients (1176 advanced adenomas plus 51 carcinomas, 7.1 %). According to univariate and multivariate analysis, the factors associated with advanced CRN included age >60 years (odds ratio (OR) 2.1, 95 % confidence interval (CI) 1.8 - 2.4, P < 0.0001), male gender (OR 2.1, 95 %CI 1.7 - 2.7, P < 0.0001), referral for colonoscopy from primary care physician (OR 3.1, 95 %CI 2.5 - 3.7, P < 0.0001), and several other indications (OR 1.8, 95 %CI 1.5 - 2.3, P < 0.001). The yield of colonoscopy for advanced CRN was lower (2.2 %) than expected in patients with iron-deficiency anemia (OR 0.5, 95 %CI 0.2 - 0.9, P = 0.03). CONCLUSIONS Age, gender, and referral for colonoscopy from primary care physician constituted important independent predictors of advanced CRN in patients undergoing colonoscopy.
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Affiliation(s)
- D I Park
- Kangbuk Samsung Hospital, Sungkyunkwan [corrected] University School of Medicine, Seoul, South Korea
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Kim YH, Lee JH, Yang SK, Kim TI, Kim JS, Kim HJ, Kim JI, Kim SW, Kim JO, Jung IK, Jung SA, Jung MK, Kim HS, Myung SJ, Kim WH, Rhee JC, Choi KY, Song IS, Hyun JH, Min YI. Primary colon lymphoma in Korea: a KASID (Korean Association for the Study of Intestinal Diseases) Study. Dig Dis Sci 2005; 50:2243-7. [PMID: 16416168 DOI: 10.1007/s10620-005-3041-7] [Citation(s) in RCA: 49] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2005] [Accepted: 03/22/2005] [Indexed: 12/16/2022]
Abstract
Although almost all primary colorectal lymphomas are of B-cell lineage in Western countries, primary colorectal T-cell lymphomas are not uncommon in the East. The aim of this study was to review the clinical characteristics and treatment outcomes of primary colorectal lymphomas, with special emphasis on the differences between T-cell and B-cell lymphomas. Ninety-five cases of primary colorectal lymphomas that satisfied Dawson's criteria were identified from the clinical databases of 13 university hospitals in Korea. The mean age at the time of presentation was 51.1 years and the male:female ratio was 64:31. The clinical information, including endoscopic and histological characteristics, was retrospectively analyzed. Of the primary colorectal lymphomas, 78 cases (82.1%) were of B-lineage and 17 cases (17.9%) were of T-cell lineage. Patients with T-cell lymphomas presented at a younger age than patients with B-cell lymphomas (42.8 vs 52.9 years, respectively; P = 0.016). The most common presenting symptom was abdominal pain (87.1%) for B-cell lymphomas, whereas hematochezia or night fever was more common for T-cell lymphomas (52.9% and 35.3%, respectively). The most common endoscopic type was fungating mass (54.0%) for B-cell lymphomas and ulcerative/ulcero-infiltrative lesions (80.0%) for T-cell lymphomas. Intussusception was more common in B-cell lymphomas than in T-cell lymphomas (30.8% vs 5.9%, respectively; P = 0.035), but perforation was more common in T-cell lymphomas than in B-cell lymphomas (23.5% vs 3.8%, respectively; P = 0.005). The prognosis was significantly worse for T-cell lymphomas than for B-cell lymphomas (P = 0.002). Primary colorectal T-cell lymphomas are characterized by multifocal ulcerative lesions in relatively young patients, a high rate of hematochezia, fever, or perforation, and a poor prognosis even for cases of localized disease.
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Affiliation(s)
- Y-H Kim
- Sungkyunkwan University, Korea
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Chae HJ, Chin HY, Lee GY, Park HR, Yang SK, Chung HT, Pae HO, Kim HM, Chae SW, Kim HR. Carbon monoxide and nitric oxide protect against tumor necrosis factor-alpha-induced apoptosis in osteoblasts: HO-1 is necessary to mediate the protection. Clin Chim Acta 2005; 365:270-8. [PMID: 16242122 DOI: 10.1016/j.cca.2005.09.011] [Citation(s) in RCA: 27] [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] [Received: 04/07/2005] [Revised: 08/31/2005] [Accepted: 09/06/2005] [Indexed: 10/25/2022]
Abstract
BACKGROUND Carbon monoxide (CO) and nitric oxide (NO) each have unique roles for various inflammatory states, including inflammatory bone resorption. Although it is known that NO can induce the expression of the cytoprotective enzyme HO-1, there is no information as to whether the protective effect of CO requires NO production or whether CO must induce the expression of HO-1 to exert its functional effects. METHODS Murine osteoblast cells, MC3T3E1 osteoblasts, were cultured for CO and NO-associated HO-1 experiments and were transfected with pcDNA 3, pcDNA 3-HO-1, control siRNA or HO-1 siRNA using Nucleofector. For cell death measurement, MTT and annexin V assays were used. We performed Western blotting to check the expressions of HO-1 and iNOs and measured the HO-1 enzyme activity. We also measured the amounts of nitrite and nitrate using Griess reagents. RESULTS The increased expression of HO-1 is required for the protective effect of NO and a single treatment of CO can increase the expression of HO-1, and this is also important for the protective effect of CO in MC3T3E1 osteoblasts. CO as well as NO attenuates the TNF-alpha-induced apoptosis in osteoblasts. The anti-apoptotic effect of CO or NO is not mediated by cGMP, and CO has no effect on the release of NO. The inhibition of HO-1 with using the HO-1 inhibitor ZnPP or HO-1 siRNA resulted in a striking increase of apoptosis in the CO/TNF-alpha-treated cells. Furthermore, HO-1 overexpression showed resistance against the TNF-alpha-induced cytotoxicity in the MC3T3E1 osteoblasts. CONCLUSIONS There is a need for HO-1 expression to mediate the protection provided by exogenous CO or NO in osteoblasts.
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Affiliation(s)
- H J Chae
- Department of Pharmacology and Institute of Cardiovascular Research, School of Medicine, Chonbuk National University, Jeonju, South Korea
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Hong WS, Jung HY, Yang SK, Myung SJ, Kim JH, Min YI, Chung MH, Lee HS, Kim HW. The antioxidant effect of rebamipide on oxygen free radical production by H. pylori-activated human neutrophils: in comparison with N-acetylcysteine, ascorbic acid and glutathione. Pharmacol Res 2001; 44:293-7. [PMID: 11592863 DOI: 10.1006/phrs.2001.0839] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Helicobacter pylori(H. pylori)-activated neutrophils produce the oxygen-derived free radicals (OFRs) which play an important role in gastric mucosal cell damage. Rebamipide (2-(4-chlorobenzoylamino)-3-[2-(1H)-quinolinon-4-yl] propionic acid) is an antiulcer compound, which protects gastric mucosa against OFR-mediated injury. In order to investigate the effects of rebamipide on OFR production and to compare the antioxidant activity of rebamipide with those of three known antioxidants, N-acetylcysteine (AC), ascorbic acid (Vit C) and glutathione (GSH), the antioxidant activities were determined by luminol-dependent chemiluminescence (ChL) assay and pyrogallol autoxidation assay. The ChL value was markedly elevated immediately after the addition of H. pylori into the medium containing neutrophils. The antioxidant activity of 1.0 mM rebamipide was greater than that of 0.1 mM rebamipide in the luminol-dependent ChL assay, while in the pyrogallol autoxidation assay, the antioxidant activity of 1.0 mM rebamipide was similar to that of 0.1 mM rebamipide. Rebamipide inhibited OFR generation in the pyrogallol autoxidation assay, with the potency being in the order of GSH > Vit C > rebamipide > AC. In the luminol-dependent ChL assay, the antioxidant activity of rebamipide was the greatest among them. These results indicate that rebamipide is a potent antioxidant and scavenges OFRs produced by H. pylori effectively in luminol-dependent ChL assays.
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Affiliation(s)
- W S Hong
- Department of Internal Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, 138-736, Korea
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Abstract
Studies of Asians in Asia show relatively low incidence rates for ulcerative colitis and Crohn's disease compared with North America and Europe. The prevalence of ulcerative colitis in migrant South Asians in Europe is similar to Europeans, whereas the prevalence of Crohn's disease for migrant South Asians in Europe is decreased compared with Europeans. The prevalence for both ulcerative colitis and Crohn's disease in Japan and Korea is relatively low. There are no obvious differences in age or sex distribution or rates of familial aggregation, and there are no significant differences in the clinical characteristics and natural history of ulcerative colitis and Crohn's disease in Asians compared with other racial groups with inflammatory bowel disease.
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Affiliation(s)
- S K Yang
- Department of Internal Medicine, University of Ulsan College of Medicine and Asan Medical Center, Seoul, South Korea.
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Park JS, Myung SJ, Jung HY, Yang SK, Hong WS, Kim JH, Kang GH, Ha HK, Min YI. Endoscopic treatment of gastritis cystica polyposa found in an unoperated stomach. Gastrointest Endosc 2001; 54:101-3. [PMID: 11427856 DOI: 10.1067/mge.2001.114412] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Affiliation(s)
- J S Park
- Departments of Internal Medicine, Diagnostic Pathology, Radiology, and the University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
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Chung SY, Ha HK, Kim JH, Kim KW, Cho N, Cho KS, Lee YS, Chung DJ, Jung HY, Yang SK, Min YI. Radiologic findings of Behçet syndrome involving the gastrointestinal tract. Radiographics 2001; 21:911-24; discussion 924-6. [PMID: 11452065 DOI: 10.1148/radiographics.21.4.g01jl19911] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [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
Behçet syndrome is characterized by the histopathologic finding of nonspecific vasculitis in multiple organs. The diagnosis is usually made on the basis of the combination of clinical signs and symptoms. This disease involves the gastrointestinal tract in 10%-50% of patients, and the terminal ileum and cecum are chiefly affected. Barium study is useful in demonstrating the characteristic radiographic features of Behçet syndrome involving the gastrointestinal tract. The presence of deep, penetrating ulcers results in a high rate of complications, such as perforation, fistula, hemorrhage, and peritonitis. Furthermore, recurrence of disease adjacent to or at the surgical anastomosis is common. Computed tomography is useful in determining the extent of the lesions and in identifying cases in which complications are likely to occur. Familiarity with the various radiologic findings of Behçet syndrome involving the gastrointestinal tract helps in making an early diagnosis, as well as in establishing an appropriate treatment strategy.
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Affiliation(s)
- S Y Chung
- Departments of Diagnostic Radiology, Asan Medical Center, University of Ulsan College of Medicine, 388-1 Poongnap-Dong, Songpa-Ku, Seoul 138-736, Korea
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Kim JK, Ha HK, Byun JY, Yang SK, Jung HY, Min YI, Kim PN, Lee MG, Auh YH. CT differentiation of mesenteric ischemia due to vasculitis and thromboembolic disease. J Comput Assist Tomogr 2001; 25:604-11. [PMID: 11473193 DOI: 10.1097/00004728-200107000-00016] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
PURPOSE The purpose of this work was to differentiate CT findings of acute mesenteric ischemia due to vasculitis (MV) or thromboembolism (MTE). METHOD CT scans of 69 patients with mesenteric ischemia caused by MV (n = 37) or MTE (n = 32) were analyzed. After dividing the patients into groups with and without MV, we compared them with regard to gastrointestinal tract involvement patterns, mesenteric changes, and presence or absence of vascular thrombosis, atherosclerosis, other organ changes, and ascites. RESULTS Duodenum was involved only in the MV group (30%). The MV group had preferential involvement of the small intestine (89%) to large intestine (51%), whereas the MTE group showed even distribution. Multisegmental bowel involvement was more common in the MV group (86%) than in the MTE group (44%), especially in both jejunum and ileum and both small and large intestine. The MV group showed prominent involvement of the superior mesenteric vessel territory, although the MTE group showed even distribution. Splenomegaly and hydronephrosis were more frequently seen in the MV group and vascular thrombosis and atherosclerosis in the MTE group. CONCLUSION Although considerable overlap was noted, CT is useful in differentiating MV from MTE.
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Affiliation(s)
- J K Kim
- Department of Radiology, Asan Medical Center, University of Ulsan, South Korea
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Chang HS, Myung SJ, Yang SK. Mucinous colon cancer. Gastrointest Endosc 2001; 53:339. [PMID: 11231395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Affiliation(s)
- H S Chang
- Department of Internal Medicine, Asan Medical Center, Seoul, Korea
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Abstract
PURPOSE The purpose of this work was to evaluate the CT features of 15 patients with primary colorectal signet-ring cell carcinomas. METHOD We retrospectively reviewed the CT scans of 15 patients (mean age 44 years) with pathologically proved colorectal signet-ring cell carcinoma. On CT, we evaluated the site and length of the tumor, bowel wall thickening patterns, perirectal or pericolic infiltration, the presence or absence of colonic obstruction, and metastasis to other organs. RESULTS The tumors were located in the rectum in nine patients, the sigmoid colon in one, the hepatic flexure in one, the transverse colon in one, the ascending colon in two, and the cecum in one. The tumor length ranged from 4.0 to 10.0 cm (mean 6.1 cm) with mean thickness of 2.1 cm. CT showed concentric bowel wall thickening in all patients ("even" in 8 and "uneven" in 7), target appearance was noted in 4, perirectal or pericolic infiltrations were moderate to severe in 12, and colorectal obstruction was seen in 6. In the tumor spread patterns, lymphadenopathy was noted in 13, invasion to adjacent pelvic organs in 5, peritoneal carcinomatosis in 4, liver metastasis in 2, and periureteric metastasis in 1. CONCLUSION Primary signet-ring cell colorectal carcinoma should be included for differential consideration when CT shows a long length of concentric bowel wall thickening and target sign, especially when such findings occur in the rectum and in young patients.
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Affiliation(s)
- H J Kim
- Department of Diagnostic Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
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Affiliation(s)
- E A Rose
- Department of Family Medicine, Wayne State University, Detroit, Michigan, USA
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Kim AY, Ha HK, Seo BK, You ES, Cho KS, Kim PN, Lee MG, Jeong HY, Yang SK, Min YI. CT of patients with right-sided colon cancer and distal ileal thickening. AJR Am J Roentgenol 2000; 175:1439-44. [PMID: 11044059 DOI: 10.2214/ajr.175.5.1751439] [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: 12/20/2022]
Abstract
OBJECTIVE The purpose of this study was to analyze the incidence and primary causes of distal ileal wall thickening in 131 patients with right-sided colon cancer. SUBJECTS AND METHODS During a 2-year period, 131 patients underwent surgical resection for right-sided colon cancer. Of these patients, we analyzed 13 who had distal ileal wall thickening on CT before surgery and also had the cause determined at pathology. CT findings were analyzed with regard to the morphologic features of colonic tumors, bowel wall involvement patterns of the distal ileum, and changes in the pericolic space. RESULTS Distal ileal wall thickening occurred in 13 (10%) of the 131 patients who had right-sided colon cancer. Three patients had polypoid colon cancer, whereas the other 10 had infiltrative colon cancer. The mean thickness of the involved colonic segments was 1.6 cm (range, 1.0-2.2 cm) with a mean length of 5.2 cm (range, 2.5-10.0 cm). Pericolic infiltration was mild in six patients and moderate in four patients. The mean length and thickness of the affected ileal segments were 3.2 cm (range, 1.5-6.0 cm) and 1.1 cm (range, 0.7-2.0 cm), respectively. On histopathologic examination, neoplastic processes involved the distal ileum in nine (69%) of the 13 patients. This involvement was caused by either direct tumor invasion in seven patients or lymphatic spread in two. In four patients (31%), nonneoplastic processes with edema and congestion involved the distal ileum. CONCLUSION The distal ileum may be abnormally thickened in about 10% of patients with right-sided colon cancer; this thickening results from tumor extension (69%) or a nontumorous process (31%).
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Affiliation(s)
- A Y Kim
- Department of Diagnostic Radiology, Asan Medical Center, University of Ulsan College of Medicine, 388-1, Poongnap-Dong, Songpa-Ku, Seoul, 138-736, Korea
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Hahn Y, Lee YJ, Yun JH, Yang SK, Park CW, Mita K, Huh TL, Rhee M, Chung JH. Duplication of genes encoding non-clathrin coat protein gamma-COP in vertebrate, insect and plant evolution. FEBS Lett 2000; 482:31-6. [PMID: 11018518 DOI: 10.1016/s0014-5793(00)02033-0] [Citation(s) in RCA: 8] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Coatomer is a major component of COPI vesicles and consists of seven subunits. The gamma-COP subunit of the coatomer is believed to mediate the binding to the cytoplasmic dilysine motifs of membrane proteins. We characterized cDNAs for Copg genes encoding gamma-COP from mouse, zebrafish, Drosophila melanogaster and Bombyx mori. Two copies of Copg genes are present in vertebrates and in B. mori. Phylogenetic analysis revealed that two paralogous genes had been derived from a single ancestral gene by duplication independently in vertebrates and in B. mori. Mouse Copg1 showed ubiquitous expression with the highest level in testis. Zebrafish copg2 was biallelically expressed in hybrid larvae in contrast to its mammalian ortholog expressed in a parent-of-origin-specific manner. A phylogenetic analysis with partial plant cDNA sequences suggested that copg gene was also duplicated in the grass family (Poaceae).
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Affiliation(s)
- Y Hahn
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Taejon, South Korea
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Yang SK, Hong WS, Min YI, Kim HY, Yoo JY, Rhee PL, Rhee JC, Chang DK, Song IS, Jung SA, Park EB, Yoo HM, Lee DK, Kim YK. Incidence and prevalence of ulcerative colitis in the Songpa-Kangdong District, Seoul, Korea, 1986-1997. J Gastroenterol Hepatol 2000; 15:1037-42. [PMID: 11059934 DOI: 10.1046/j.1440-1746.2000.02252.x] [Citation(s) in RCA: 141] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND AND AIMS Ulcerative colitis (UC) is regarded as a rare disease in developing countries, but accurate data are generally lacking. We performed the present study to evaluate the incidence and prevalence of UC in Korea. METHODS A retrospective study was performed from 1986 to 1997 in the Songpa-Kangdong district of Seoul, Korea. To recruit UC patients as completely as possible, multiple information sources including all medical facilities in the study area and three referral centres located nearby, but outside the study area were used. The incidence and prevalence rates were adjusted using the 1997 Korean population statistics. RESULTS During the study period, a total of 94 incident cases were identified, for an adjusted mean annual incidence rate of 0.68 per 100,000 inhabitants. On 31 December 1997, 91 patients with UC lived in the study area, giving an adjusted prevalence rate of 7.57 per 100,000 inhabitants. By using the Poisson regression analysis, the annual incidence rate increased significantly from 0.20 per 100,000 inhabitants in 1986-1988 to 1.23 per 100,000 inhabitants in 1995-1997 (P < 0.005). Patient age at diagnosis, the interval from onset of symptoms to diagnosis, and the disease extent at diagnosis were fairly constant throughout the study period. CONCLUSIONS The incidence and prevalence of UC in our study area are still low compared with those of Western countries, but the incidence rate is steadily increasing.
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Affiliation(s)
- S K Yang
- Department of Internal Medicine, University of Ulsan College of Medicine and Asan Medical Center, Seoul, Korea.
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Guo LH, Yang SK. [Study on gallic acid preparation by using immobilized tannase from Aspergillus niger]. Sheng Wu Gong Cheng Xue Bao 2000; 16:614-7. [PMID: 11191769] [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: 02/19/2023]
Abstract
Immobilized tannase which had higher ability of transforming tannin from Chinese gallotannin into GA was prepared by embedding tannase with calcium alginate carrier. The immobilization conditions and some properties of the immobilized tannase were studied. The results showed that: The optimal immobilized parametres were 90 mg sodium alginate, 546 u(182 u/mL) tannase and 1%-2% CaCl2. The optimum temperature and pH value of immobilized tannase were 45 degrees C and 6.5, respectively. It was stable in the temperature range of 10-50 degrees C and between pH5-7. Based on the optimum program, the laboratory gramme-grade preparation experiments of GA were done. The average yield of GA product in three preparations was upto 61%, and was about equivalent to the yield of acidic hydrolytic method which is used to produce GA industrially now. Thus, the research results possessed potential applied value.
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Affiliation(s)
- L H Guo
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041
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Yang IC, Yang SK, Park CW, Chung JH. De novo methylation at intronic CpG islands of Igf2r is associated with decreased expression of antisense RNA in aged mice. Biochem Biophys Res Commun 2000; 274:722-6. [PMID: 10924343 DOI: 10.1006/bbrc.2000.3185] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Changes in cytosine methylation status of several genes have been implicated in the aging process. We have examined methylation status of differentially methylated regions of insulin-like growth factor II receptor gene during mouse senescence. Bisulfite-aided genomic sequencing revealed that methylated CpG residues were extended beyond the 3' boundary of de novo methylation sequence of DMR2 in aged mice. Furthermore, the de novo methylation of DMR2 in aged mice was associated with decreased expression of antisense transcript which recruits DMR2 as a promoter. On the contrary, methylation status of DMR1 was well-maintained during senescence. Accordingly, no significant changes in expression levels of sense transcripts were observed during the course of mouse aging.
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Affiliation(s)
- I C Yang
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Taejon, 305-701, South Korea
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Affiliation(s)
- J H Lee
- Department of Diagnostic Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
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Abstract
Juvenile polyposis is an uncommon condition characterized by the development of multiple (usually more than 5) juvenile polyps in the gastrointestinal tract, especially in the colon. This disease usually occurs during childhood, and is inherited in an autosomal dominant fashion. It has been suggested that the dpc4 (deleted in pancreatic carcinoma, locus 4) gene, which is located on chromosome 18q21.1, might cause juvenile polyposis. The dpc4 (smad4) gene is a candidate tumor-suppressor gene and may play a role in the TGF-beta-signaling pathway. To confirm the idea that alterations of the dpc4 gene may result in juvenile polyposis, we screened 5 Korean juvenile-polyposis patients by PCR-SSCP (single-strand conformation polymorphism) analysis and bi-directional sequencing. There were germline mutations of the dpc4 gene in 3 out of the 5 patients: 2 had a genetic alteration in exon 9 and the third had a mutation in exon 8. These germline mutations occurred in the C-terminus of the dpc4 gene, similar to most published mutations. One patient exhibited a non-sense mutation (codon 388), which changed a glutamine codon (CAG) to a stop codon (TAG). The second patient harbored a mis-sense mutation (codon 390), causing a non-conservative amino-acid change <glutamate (GAA) to lysine (AAA)>. The third patient had a mis-sense mutation in exon 8 (codon 361), which altered an arginine codon (CGC) into a histidine codon (CAC).
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Affiliation(s)
- I J Kim
- Korean Hereditary Tumor Registry, Laboratory of Cell Biology, Cancer Research Center and Cancer Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea
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Lee SH, Kim HJ, Yang SK, Kim WH, Joo YS, Dong SH, Kim BH, Lee JI, Chang YW, Chang R. Decreased trabecular bone mineral density in newly diagnosed inflammatory bowel disease patients in Korea. J Gastroenterol Hepatol 2000; 15:512-8. [PMID: 10847438 DOI: 10.1046/j.1440-1746.2000.02154.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
BACKGROUND Decreased bone mineral density (BMD) is common in Western patients with inflammatory bowel disease (IBD). However, BMD has never been studied in Asia where the demographic and socio-economic status are different from the West. The aim of this study was to investigate the prevalence and mechanisms of osteopenia in newly diagnosed Korean patients with IBD. METHODS We studied 14 patients with Crohn's disease (CD) and 25 patients with ulcerative colitis (UC), all of whom had never been treated with corticosteroids. Bone mineral density was measured in the lumbar spine and the femoral neck by dual energy X-ray absorptiometry. Biochemical parameters including serum osteocalcin, parathyroid hormone, plasma inactive and active vitamin D, and urinary deoxypyridinoline were measured. RESULTS The BMD Z score at the lumbar spine was lower both in CD and in UC patients, but there was no significant difference between the two groups. There was no significant difference in nutritional status or biochemical parameters of bone metabolism between patients with a normal BMD and those with a decreased BMD. CONCLUSIONS Low BMD at the lumbar spine is common in newly diagnosed Korean patients with IBD, a result which is similar to Western studies. The mechanism for low bone mass remains undetermined; however, nutritional status and hormonal parameters of bone metabolism, and ethnic differences are not likely to be an important factor in the pathogenesis of this bone loss.
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Affiliation(s)
- S H Lee
- Department of Internal Medicine, Kyung Hee University College of Medicine, Korea
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Affiliation(s)
- E R Park
- Department of Internal Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
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Kim JC, Roh SA, Kim HC, Yu CS, Lee DH, Ahn BY, Kim KM, Yang SK, Kang GH, Beck NE, Bodmer WF. Somatic mutations of the first 14 exons of APC in hamartomatous polyps of the colon. Hum Mutat 1999; 14:351-2. [PMID: 10502830 DOI: 10.1002/(sici)1098-1004(199910)14:4<351::aid-humu13>3.0.co;2-m] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Although hamartomatous or hyperplastic polyps are rarely accompanied by adenomatous or carcinomatous foci, the role of APC (MIM# 175100) mutations in these polyps is not clear. The neoplastic potential of these polyps was assessed with regard to somatic mutation of the first 14 exons of APC. DNA from 14 hamartomatous polyps (12 patients with juvenile polyp, JP; two patients with Peutz-Jeghers syndrome, PJS) and 27 hyperplastic polyps was used. Exons 1-14 of APC were amplified using verified oligonucleotide primers, and PCR-SSCP analysis was performed. Translation-terminating mutation in exon 15 was also screened using the protein truncation test. All mutations found were transitions or transversions with heterozygous alleles of both wild-type and mutant APC in exons 2, 9, 10, and 11. Four hamartomatous polyps (three from JP and one from PJS) showed seven, new mutations and one common APC variant (codon 486), whereas no hyperplastic polyps demonstrated mutation. APC mutation was not correlated with previous history of colorectal carcinoma or number of polyps. Since all mutations were missense or silent mutations occurred in exons not previously known to have functionally relevant area, their phenotypic implication appeared to be limited.
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Affiliation(s)
- J C Kim
- Laboratory of Gastrointestinal Cancer Biology and Genetics, Department of Surgery,University of Ulsan College of Medicine and Asan Institute for Life Sciences, 388-1 Poongnap-Dong, Songpa-Ku, Seoul, Korea.
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Yang SK, Jung HY, Kang GH, Kim YM, Myung SJ, Shim KN, Hong WS, Min YI. Appendiceal orifice inflammation as a skip lesion in ulcerative colitis: an analysis in relation to medical therapy and disease extent. Gastrointest Endosc 1999; 49:743-7. [PMID: 10343220 DOI: 10.1016/s0016-5107(99)70293-2] [Citation(s) in RCA: 110] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND Although several reports have claimed that the appendix can be involved as a skip lesion in ulcerative colitis, they do not exclude the possibility that this skip lesion occurs as a result of medical therapy. Also, little is known about the relation between the presence of appendiceal orifice inflammation and the extent of the disease. METHODS The presence of appendiceal orifice inflammation was prospectively assessed both endoscopically and histologically in 94 patients with active ulcerative colitis, the extent of whose disease had not been beyond the hepatic flexure. To evaluate the effect of prior medical therapy on the prevalence of appendiceal orifice inflammation, all cases were divided into two groups. Group A consisted of 66 patients who had been treated before inclusion; group B was composed of 28 patients newly diagnosed at inclusion. RESULTS Appendiceal orifice inflammation was diagnosed in 24 (26%) of 94 patients with active subtotal ulcerative colitis, with no statistical difference observed between group A (23%) and group B (32%). In all 94 patients, the frequency of appendiceal orifice inflammation decreased significantly as the extent of disease increased, i.e., 37% in proctitis (n = 49), 17% in left-sided colitis (n = 36), and 0% in extensive colitis (n = 9) (p < 0.05). CONCLUSIONS Appendiceal orifice inflammation as a skip lesion of ulcerative colitis is not rare, is more frequently observed in patients with less extensive disease, and is not the result of patchy improvement due to medical therapy.
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Affiliation(s)
- S K Yang
- Departments of Internal Medicine and Diagnostic Pathology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
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Jung HY, Kim HJ, Kim SB, Lee HK, Kim JH, Kim DK, Yang SK, Park SI, Kim HR, Song HY, Hong WS, Chang H, Kim SH, Min YI. Esophageal cancer in an esophagus remaining after colonic interposition for lye stricture. Endoscopy 1999; 31:S1. [PMID: 10223378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Affiliation(s)
- H Y Jung
- Dept. of Internal Medicine, University of Ulsan, Asan Medical Center, Seoul, Korea
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Ha HK, Ko GY, Yu ES, Yoon K, Hong WS, Kim HR, Jung HY, Yang SK, Jee KN, Min YI, Auh YH. Intestinal tuberculosis with abdominal complications: radiologic and pathologic features. Abdom Imaging 1999; 24:32-8. [PMID: 9933670 DOI: 10.1007/s002619900436] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND To investigate radiologic and pathological features of intestinal tuberculosis with abdominal complications. METHODS Twenty-two patients with 23 surgically proven complications (nine intestinal obstructions, eight perforations, three fistulae, and three intestinal bleeds) were analyzed. Medical records, radiologic studies, and pathologic examinations were reviewed with special emphasis on searching for the common features in each group of complication. RESULTS The most important single feature in seven of the nine patients with intestinal obstruction was the presence of stricture. In the remaining two patients, bowel adhesion was a primary cause of obstruction. In eight patients with intestinal perforation, both obstruction and ulcerations in the dilated proximal loop were the important features in six, and multiple deep ulcerations without obstruction was a primary cause in the remaining two. The common features in three patients with fistulae were focal or multiple strictures, severe adhesions, and fibrotic bowel wall. Intestinal bleeding originated from diffuse mucosal ulcerations. The abdominal complications occurred during antituberculous therapy in 10 of the 22 patients. CONCLUSION Understanding the radiologic and pathologic features of intestinal tuberculosis with complications help in making an appropriate clinical decision for the treatment strategy. Close observation is necessary, especially in those patients who are acutely ill during antituberculous medical therapy. Enteritis-Intestines, diseases-Intestines, infection-Intestines, perforation-Intestines, stenosis or obstruction.
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Affiliation(s)
- H K Ha
- Department of Diagnostic Radiology, Asan Medical Center, University of Ulsan College of Medicine, 388-1 Poongnap-dong, Songpa-ku, Seoul 138-040, Korea
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Myung SJ, Yang SK, Jung HY, Jung SA, Kang GH, Ha HK, Hong WS, Min YI. Zinc deficiency manifested by dermatitis and visual dysfunction in a patient with Crohn's disease. J Gastroenterol 1998; 33:876-9. [PMID: 9853564 DOI: 10.1007/s005350050192] [Citation(s) in RCA: 36] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
We report a case of Crohn's disease with low serum zinc concentration in a 26-year-old woman. She demonstrated acrodermatitis enteropathica and decreased visual acuity during total parenteral nutrition. Subsequent intravenous zinc supplementation resulted in alleviation of the skin lesions and improvement of visual acuity. This case supports the notion that depressed serum zinc in Crohn's disease may cause clinical manifestations, such as acrodermatitis enteropathica and retinal dysfunction, which may be correctable with zinc supplementation.
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Affiliation(s)
- S J Myung
- Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
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