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Kim M, Choi CW, Kim ER, Chang DK, Hong SN. Risk Prediction of Post-Endoscopic Submucosal Dissection Coagulation Syndrome. Dig Dis 2024:000539007. [PMID: 38648736 DOI: 10.1159/000539007] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 04/17/2024] [Indexed: 04/25/2024]
Abstract
INTRODUCTION Endoscopic submucosal dissection (ESD) has been popular worldwide to treat laterally spreading tumors and large polyps. Post-ESD coagulation syndrome (PECS) is more common than the two major ESD-related complications, perforation and bleeding. The aim of this study was to assess the prevalence of PECS, identify the risk factors for PECS, and create a risk prediction model for PECS. METHODS Retrospective cross-sectional study analyzed a total of 986 patients who underwent colorectal ESD. Logistic regression models were used to assess risk factors with PECS. Each risk factor was scored and the 3-step risk stratification index of prediction model was assessed. RESULTS The prevalence of PECS was 21.4% (95% confidence interval [CI]=18.9%-24.1%). The risk factors of PECS in the multivariate logistic regression were tumor size (+1 cm: odds ratio [OR], 1.29; 95% CI, 1.16 to 7.09), cecal lesion (OR, 1.96; 95% CI, 1.09 to 1.53), procedure time (+30 minutes: OR, 1.19; 95% CI, 1.02 to 1.39), and ESD with snaring (OR, 0.64; 95% CI, 0.43 to 0.95). Applying a simplified weighted scoring system based on adjusted OR increments of 1, the risk of PECS was 12.3% (95% CI, 0.3%-16.0%) for the low-risk group (score ≤ 4) and was 36.0% (95% CI=29.4%-43.2%) for the high-risk group (score ≥ 8). Overall discrimination (C-statistic=0.629; 95% CI=0.585-0.672) and calibration (p = 0.993) of the model were moderate to good. CONCLUSION PECS occurs frequently and the prediction model can be helpful for effective treatment and prevention of PECS.
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Hong SN, Hye Song J, Jin Kim S, Ha Park Y, Wan Choi C, Eun Kim J, Ran Kim E, Kyung Chang D, Kim YH. One-Year Clinical Outcomes of Subcutaneous Infliximab Maintenance Therapy Compared With Intravenous Infliximab Maintenance Therapy in Patients With Inflammatory Bowel Disease: A Prospective Cohort Study. Inflamm Bowel Dis 2024; 30:517-528. [PMID: 37260346 DOI: 10.1093/ibd/izad094] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Indexed: 06/02/2023]
Abstract
BACKGROUND Although the pharmacokinetic profile of subcutaneous (SC) infliximab (IFX) is superior to conventional intravenous (IV) IFX, long-term efficacy and safety of SC IFX in patients with inflammatory bowel disease (IBD) have not been reported yet. This study aimed to evaluate long-term clinical outcomes of IBD patients treated with SC IFX compared with those of IBD patients treated with IV IFX during maintenance therapy. METHODS This prospective cohort study enrolled 61 IBD patients in clinical remission who received scheduled IFX maintenance therapy. Of them, 38 patients were switched to SC IFX, while 23 patients continued IV IFX with dose optimization. Enrolled patients were followed up for 1 year. The primary outcome was durable remission defined as clinical remission (Crohn's disease, Harvey-Bradshaw index <5; ulcerative colitis, partial Mayo score <2) and biochemical remission (C-reactive protein <0.5 mg/dL) with IFX trough level ≥3 µg/mL throughout the follow-up period. RESULTS One-year clinical remission, 1-year biochemical remission, and mucosal healing did not differ between the IV and SC IFX groups (n = 20 of 23 vs 33 of 38; P = 1.000; n = 22 of 23 vs 34 of 38; P = .641; and n = 10 of 18 vs 17 of 25; P = .414, respectively). During follow-up, the number of patients with IFX trough level <3 μg/mL was significantly lower in the SC IFX group (n = 0 of 38, 0%) than in the IV IFX group (n = 10 of 23, 43%) (P < .001). The SC IFX group showed higher 1-year durable remission than the IV IFX group (n = 31 of 38, 82% vs n = 11 of 23, 48%; P = .013). The incidence of IFX-related adverse events did not differ significantly between both groups (26% vs 39%; P = .446). CONCLUSION The SC IFX switch induced a higher 1-year durable remission rate than continuing IV IFX in patients with IBD during scheduled maintenance therapy, showing similar safety.
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Affiliation(s)
- Sung Noh Hong
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Joo Hye Song
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Sung Jin Kim
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Yoon Ha Park
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Chang Wan Choi
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Ji Eun Kim
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Eun Ran Kim
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Dong Kyung Chang
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Young-Ho Kim
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Kim JE, Choi CW, Hong SN, Song JH, Kim ER, Chang DK, Kim YH. Incremental Detection Rate of Dysplasia and Sessile Serrated Polyps/Adenomas Using Narrow-Band Imaging and Dye Spray Chromoendoscopy in Addition to High-Definition Endoscopy in Patients with Long-Standing Extensive Ulcerative Colitis: Segmental Tandem Endoscopic Study. Diagnostics (Basel) 2023; 13:diagnostics13030516. [PMID: 36766621 PMCID: PMC9914536 DOI: 10.3390/diagnostics13030516] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Revised: 01/19/2023] [Accepted: 01/28/2023] [Indexed: 02/05/2023] Open
Abstract
High-definition (HD) endoscopy is recommended in surveillance colonoscopy for detecting dysplasia in patients with ulcerative colitis (UC). Dye-spray chromoendoscopy (DCE) and narrow-band imaging (NBI) are often used as adjunctive techniques of white-light endoscopy (WLE) in real-world practice. However, the incremental detection ability of DCE and NBI added to HD-WLE for dysplasia and serrated lesions has not yet been evaluated using tandem endoscopy in patients with long-standing extensive UC. We enrolled patients with extensive UC for >8 years who were in clinical remission (partial Mayo score < 2) at the Samsung Medical Center in Seoul, Republic of Korea. HD-WLE was performed first. Subsequently, HD-NBI and HD-DCE with indigo carmine were performed using the segmental tandem colonoscopy technique. A total of 40 patients were eligible, and data obtained from 33 patients were analyzed. The incremental detection rates (IDRs) for dysplasia and serrated lesions were calculated. HD-WLE detected three dysplasia and five sessile serrated adenomas/polyps (SSAs/Ps). HD-NBI and HD-DCE did not detect additional dysplasia (IDR = 0%; 95% confidence interval (CI): 0-56.2%). HD-NBI identified one missed SSA/P (IDR = 7.7%; 95% CI: 1.4-33.3%), and HD-DCE detected seven missed SSAs/Ps (IDR = 53.9%; 95% CI: 29.1-76.8%). Logistic regression found that HD-DCE increased the detection of SSAs/Ps compared to HD-WLE and/or HD-NBI (odds ratio (OR) = 3.16, 95% CI: 0.83-11.92, p = 0.08). DCE in addition to HD-WLE improved the detection of SSAs/Ps, but not dysplasia, in patients with long-standing extensive UC.
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So KW, Tsui HL, Yu SM, Suen CH, Choi CW, Chu PY, Chan JCS. Achieving Optimal Central Venous Catheter Position: Evaluation of Radiographic Landmarks for Accuracy and Inter-observer Reliability in Locating the Cavoatrial Junction. Hong Kong Journal of Radiology 2022. [DOI: 10.12809/hkjr2217382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Affiliation(s)
- KW So
- Department of Radiology and Organ Imaging, United Christian Hospital, Hong Kong
| | - HL Tsui
- Department of Radiology and Organ Imaging, United Christian Hospital, Hong Kong
| | - SM Yu
- Department of Radiology and Organ Imaging, United Christian Hospital, Hong Kong
| | - CH Suen
- Department of Radiology and Organ Imaging, United Christian Hospital, Hong Kong
| | - CW Choi
- Department of Radiology and Organ Imaging, United Christian Hospital, Hong Kong
| | - PY Chu
- Department of Radiology and Organ Imaging, United Christian Hospital, Hong Kong
| | - JCS Chan
- Department of Radiology and Organ Imaging, United Christian Hospital, Hong Kong
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Choi CW, Sung HK, Jeong JY, Lim DH, Choi J, Kwon HC, Nam S, Kim Y, Chin B. Changing Features of Liver Injury in COVID-19 Patients: Impact of Infection with the SARS-CoV-2 Delta (B.1.617.2) Variants. Infect Chemother 2022; 54:744-756. [PMID: 36596683 PMCID: PMC9840963 DOI: 10.3947/ic.2022.0122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 12/08/2022] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND There is growing evidence that abnormal liver function tests (LFTs) are common in patients with coronavirus disease 2019 (COVID-19). However, it is not known whether viral involvement in the liver differs according to the strain. We investigated the impact on liver injury in patients with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) Delta (B.1.617.2) variants. MATERIALS AND METHODS We conducted a single-center, retrospective cohort study, including 372 patients admitted during the pre-Delta period (PDP: between February 1 and November 30, 2020) and 137 patients admitted during the Delta period (DP: between August 1 and August 31, 2021). Initial liver injury was defined as alanine aminotransferase (ALT) or aspartate aminotransferase (AST) levels ≥3 × the upper limit of normal (ULN) or alkaline phosphatase (ALP) or total bilirubin ≥2 × the ULN within 3 days from admission. RESULTS Of 509 patients with COVID-19 included in our study, 38 (7.5%) patients had initial liver injury. The DP group had a significantly higher rate of initial liver injury than the PDP group (PDP: 5.9% vs. DP: 11.7%, P = 0.028). The DP group (adjusted odds ratio [aOR]: 2.737, 95% confidence interval [CI]: 1.322 - 5.666) was independently associated with initial liver injury. During hospitalization, 160 (31.4%) patients had severe COVID-19. The DP group and initial liver injury had higher odds of progressing to severe COVID-19 (aOR: 2.664, 95% CI: 1.526 - 4.648, and aOR: 4.409, 95% CI: 1.816 - 10.707, respectively). The mediation analysis suggested that initial liver injury mediates the relationship between SARS-CoV-2 Delta variant infection and severe COVID-19 (unstandardized beta coefficient = 0.980, Standard error = 0.284, P = 0.001). CONCLUSION Initial liver injury is more common in COVID-19 patients with Delta variants. Also, Delta variants and initial liver injury are associated with poor clinical outcomes.
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Affiliation(s)
- Chang Wan Choi
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, National Medical Center, Seoul, Korea
| | - Ho Kyung Sung
- National Emergency Medical Center, National Medical Center, Seoul, Korea.,Research Institute for Public Health, National Medical Center, Seoul, Korea
| | - Jae Yoon Jeong
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, National Medical Center, Seoul, Korea
| | - Dae Hyun Lim
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, National Medical Center, Seoul, Korea
| | - Jongkyoung Choi
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, National Medical Center, Seoul, Korea
| | - Hyeok Choon Kwon
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, National Medical Center, Seoul, Korea
| | - Seongwoo Nam
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, National Medical Center, Seoul, Korea
| | - Yeonjae Kim
- Division of Infectious Diseases, Department of Internal Medicine, National Medical Center, Seoul, Korea
| | - BumSik Chin
- Division of Infectious Diseases, Department of Internal Medicine, National Medical Center, Seoul, Korea
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Lee LYK, Yeung CK, Choi CW, Leung MN, Lui SY, Tam WY, Tang KY, Wong CS, Wong YS, Yau CY, Yeung TL, Lee JKL, Chui DLK. 1039 RECEIVING ASSISTANCE FROM DOMESTIC ROBOTS: WHAT ARE ELDERS’ PREFERENCES? Age Ageing 2022. [DOI: 10.1093/ageing/afac126.089] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Introduction
Aging leads to decline in physical and functional ability. Strengthening the domestic support enables elders to manage their health and living at home and reduce their need for residential service. Domestic robots can potentially provide a broad range of support to the elders. However, relatively little research attention has investigated elders’ preferences on it. This study aims to investigate elders’ preferences on receiving assistance from domestic robots.
Methods
This cross-sectional descriptive study recruited a convenient sample of 365 robotic inexperienced elders (65-99 years old). It used the Assistance Preference Checklist to assess participants’ preferences on receiving assistance from domestic robots in 48 home-based tasks under six aspects including personal care, leisure activities, health assistance, chores, information management, and manipulating objects. It used t-test and one-way analysis of variance to compare the difference in preferences between participants with different demographic and health characteristics.
Results
Overall, participants preferred domestic robots to assist in tasks under the aspect on chores, information management, and manipulating objects. Specifically, males indicated a higher preference for domestic robots to assist in maintaining lawn or raking leaves than females (p = 0.05). Married participants indicated a higher preference for domestic robots to assist in getting information on weather/news than unmarried participants (p = 0.049). In contrast, participants who were partially dependent and fully dependent indicated a higher preference for domestic robots to assist in tasks under the personal care aspect such as shaving, bathing, washing/combing hair, getting dressed, walking, and brushing teeth (p < 0.001), comparing to participants who were physically independent.
Conclusion
This study provides insight for manufacturers to develop domestic robots with specific capabilities which are important to support elders’ living in the community. Moreover, it helps the care providers to identify domestic robots with the required capabilities that meet elders’ specific preferences.
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Affiliation(s)
- L Y K Lee
- Hong Kong Metropolitan University School of Nursing and Health Studies,
| | - C K Yeung
- Hong Kong Metropolitan University School of Nursing and Health Studies,
| | - C W Choi
- Hong Kong Metropolitan University School of Nursing and Health Studies,
| | - M N Leung
- Hong Kong Metropolitan University School of Nursing and Health Studies,
| | - S Y Lui
- Hong Kong Metropolitan University School of Nursing and Health Studies,
| | - W Y Tam
- Hong Kong Metropolitan University School of Nursing and Health Studies,
| | - K Y Tang
- Hong Kong Metropolitan University School of Nursing and Health Studies,
| | - C S Wong
- Hong Kong Metropolitan University School of Nursing and Health Studies,
| | - Y S Wong
- Hong Kong Metropolitan University School of Nursing and Health Studies,
| | - C Y Yau
- Hong Kong Metropolitan University School of Nursing and Health Studies,
| | - T L Yeung
- Hong Kong Metropolitan University School of Nursing and Health Studies,
| | - J K L Lee
- Hong Kong Metropolitan University School of Nursing and Health Studies,
| | - D L K Chui
- Hong Kong Metropolitan University School of Nursing and Health Studies,
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Lee LYK, Yeung CK, Choi CW, Leung MN, Lui Y, Tam WY, Tang KY, Wong C, Wong Y, Yau CY, Yeung TL, Lee JKL, Chui DLK. 1040 VALIDATION OF THE CHINESE VERSION OF THE ASSISTANCE PREFERENCE CHECKLIST. Age Ageing 2022. [DOI: 10.1093/ageing/afac126.059] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Introduction
Domestic robots have great potential to be developed as a useful and supportive device for elders in domestic setting. To achieve the intended purpose, the designs of domestic robots should make reference to elders’ preferences. The Assistance Preference Checklist is developed to assess elders’ preferences on receiving assistance from domestic robots. It comprises of 48 home-based task under six categories including personal care, leisure activities, health assistance, chores, information management, and manipulating objects. Altogether, these tasks are considered important for the elders to fulfil their general health needs and maintain their homes. The Assistance Preference Checklist is valid and reliable. To adapt it in the Chinese population, the Assistance Preference Checklist has been translated from English to Chinese according to the standard translation model. This study aims to validate the Chinese version of the Assistance Preference Checklist (the checklist).
Method
This was a validation study. Semantic and content equivalence of the checklist was evaluated by an expert panel (five academic specialized on instrument validation or translation and 15 nurses specialized on geriatrics). Content validity of the checklist was assessed by another expert panel (one academic specialized on instrument validation and two nurses specialized on geriatrics). Internal consistency of the checklist was determined by Cronbach's method on a convenience sample of 50 Chinese-speaking elders in Hong Kong.
Results
The checklist demonstrated good semantic and content equivalence with the original English version. The experts agreed that it was appropriately translated. The checklist demonstrated good content validity by having a content validity index of 1.00. Additionally, the checklist reported satisfactory internal consistency by having a Cronbach's alpha of 0.95.
Conclusion
The Chinese version of the Assistance Preference Checklist is a useful instrument for assessing elders’ preferences on receiving assistance from domestic robots. Findings provide evidence on its validity and reliability.
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Affiliation(s)
- L Y K Lee
- School of Nursing and Health Studies, Hong Kong Metropolitan University
| | - C K Yeung
- School of Nursing and Health Studies, Hong Kong Metropolitan University
| | - C W Choi
- School of Nursing and Health Studies, Hong Kong Metropolitan University
| | - M N Leung
- School of Nursing and Health Studies, Hong Kong Metropolitan University
| | - Y Lui
- School of Nursing and Health Studies, Hong Kong Metropolitan University
| | - W Y Tam
- School of Nursing and Health Studies, Hong Kong Metropolitan University
| | - K Y Tang
- School of Nursing and Health Studies, Hong Kong Metropolitan University
| | - C Wong
- School of Nursing and Health Studies, Hong Kong Metropolitan University
| | - Y Wong
- School of Nursing and Health Studies, Hong Kong Metropolitan University
| | - C Y Yau
- School of Nursing and Health Studies, Hong Kong Metropolitan University
| | - T L Yeung
- School of Nursing and Health Studies, Hong Kong Metropolitan University
| | - J K L Lee
- School of Nursing and Health Studies, Hong Kong Metropolitan University
| | - D L K Chui
- School of Nursing and Health Studies, Hong Kong Metropolitan University
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Chui DLK, Yeung CK, Choi CW, Leung MN, Lui Y, Tam WY, Tang KY, Wong C, Wong Y, Yau CY, Yeung TL, Lee JKL, Lee LYK. 1047 VALIDATION OF THE CHINESE VERSION OF THE KATZ INDEX OF INDEPENDENCE IN ACTIVITIES OF DAILY LIVING. Age Ageing 2022. [DOI: 10.1093/ageing/afac126.064] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Introduction
Among the instruments that measure an elder’s functional dependence level, the Katz Index of Independence in Activities of Daily Living has the advantages of being neutral, easy to use, valid, and reliable. It is a six-item instrument rating an elder’s functional dependence level in performing activities of daily living, including bathing, dressing, toileting, transferring, continence, and feeding. Each item can be rated nominally as 1 (does not require assistance to finish the activity) or 0 (requires assistance to finish the activity). By summing the score of the six items, the functional dependence level of an elder can be classified as independent (6 points), partially dependent (3–5 points), or dependent (< 2 points). The instrument has been translated from English to Chinese through forward and backward translation. This study aims to validate the Chinese version of the Katz Index of Independence in Activities of Daily Living (Katz ADL-Chinese).
Method
This was a validation study. The Katz ADL-Chinese was examined by an expert panel (one academic specialized on instrument validation, four academic specialized on translation, fifteen nurses specialized on geriatrics) for its semantic and content equivalence with the original English version. It was evaluated by another expert panel (one academic specialized on instrument validation and two nurses specialized on geriatrics) for its content validity. Moreover, it was tested and re-tested at 1-week interval on 30 Chinese-speaking elders in Hong Kong.
Results
Good result was achieved on the testing for semantic and content equivalence. All experts confirmed that the Katz ADL-Chinese was appropriately translated. Good content validity was observed. The context validity index at item-level and scale-level was 1.00, respectively. Good stability was observed as well. The test–retest reliability coefficient was 0.85.
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Affiliation(s)
- D L K Chui
- School of Nursing and Health Studies, Hong Kong Metropolitan University
| | - C K Yeung
- School of Nursing and Health Studies, Hong Kong Metropolitan University
| | - C W Choi
- School of Nursing and Health Studies, Hong Kong Metropolitan University
| | - M N Leung
- School of Nursing and Health Studies, Hong Kong Metropolitan University
| | - Y Lui
- School of Nursing and Health Studies, Hong Kong Metropolitan University
| | - W Y Tam
- School of Nursing and Health Studies, Hong Kong Metropolitan University
| | - K Y Tang
- School of Nursing and Health Studies, Hong Kong Metropolitan University
| | - C Wong
- School of Nursing and Health Studies, Hong Kong Metropolitan University
| | - Y Wong
- School of Nursing and Health Studies, Hong Kong Metropolitan University
| | - C Y Yau
- School of Nursing and Health Studies, Hong Kong Metropolitan University
| | - T L Yeung
- School of Nursing and Health Studies, Hong Kong Metropolitan University
| | - J K L Lee
- School of Nursing and Health Studies, Hong Kong Metropolitan University
| | - L Y K Lee
- School of Nursing and Health Studies, Hong Kong Metropolitan University
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Ho RTH, Lo HHM, Fong TCT, Choi CW. Effects of a Mindfulness-based Intervention on diurnal cortisol pattern in disadvantaged families: A randomized controlled trial. Psychoneuroendocrinology 2020; 117:104696. [PMID: 32353816 DOI: 10.1016/j.psyneuen.2020.104696] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 03/10/2020] [Accepted: 04/11/2020] [Indexed: 10/24/2022]
Abstract
OBJECTIVE The present study examined the psychophysiological effects of Family-based Mindfulness Intervention (FBMI) on children and parents from disadvantaged families. METHODS This randomized controlled trial recruited parents and their children from 51 disadvantaged families in Hong Kong and randomized them into FBMI (n = 26) and waitlist control (n = 25) groups. The parent intervention included 6 sessions and the child intervention included 8 sessions with 2 half-hour joint programs. Both interventions lasted 9 hours in total each. All participants completed four salivary cortisol measures after wakeup, before lunchtime, late-afternoon, and before sleep at baseline and end of the intervention. The diurnal cortisol pattern was summarized by the morning cortisol, evening cortisol, mean cortisol, and diurnal cortisol slope. RESULTS Compared to the control group, children in the FBMI group showed significant increases in morning cortisol (d = 0.50, p = 0.03) and significant decreases in diurnal cortisol slopes (d = 0.50, p = 0.04) at the end of intervention. Parents in the FBMI group displayed significant decreases in evening cortisol (d = 0.50, p = 0.04) compared to the control group at the end of intervention. No significant treatment effects were found on the mean cortisol. DISCUSSION The present findings suggest that FBMI could improve the diurnal cortisol slope and cortisol levels of the children and parents from disadvantaged families, respectively. Future studies should elucidate its potential benefits on neuroendocrine functioning.
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Affiliation(s)
- Rainbow T H Ho
- Centre on Behavioral Health, The University of Hong Kong, Hong Kong; Department of Social Work & Social Administration, The University of Hong Kong, Hong Kong
| | - Herman H M Lo
- Department of Applied Social Sciences, The Hong Kong Polytechnic University, Hong Kong.
| | - Ted C T Fong
- Centre on Behavioral Health, The University of Hong Kong, Hong Kong; Department of Social Work & Social Administration, The University of Hong Kong, Hong Kong
| | - C W Choi
- Department of Applied Social Sciences, The Hong Kong Polytechnic University, Hong Kong
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Youn SW, Lee JH, Yu DY, Kim Y, Kim BS, Seo SJ, Choe YB, Yun SK, Park J, Kim NI, Choi CW, Youn JI, Lee SJ, Lee MG, Kim KJ, Park CJ, Ro YS, Song HJ, Shin BS, Ahn SK, Lee JY, Won YH, Jang MS, Kim KH, Kim MH, Kim TY, Choi JH. The relationship between clinical characteristics including presence of exposed lesions and health-related quality of life (HRQoL) in patients with psoriasis: analysis from the nationwide epidemiologic study for psoriasis in Korea (EPI-PSODE study). J Eur Acad Dermatol Venereol 2018; 32:1499-1506. [PMID: 29430733 DOI: 10.1111/jdv.14865] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Accepted: 01/25/2018] [Indexed: 01/23/2023]
Abstract
BACKGROUND Psychological aspect and quality of life should be considered in treating patients with psoriasis. OBJECTIVE We sought to ascertain which clinical characteristics including presence of exposed lesions are associated with impairment of health-related quality of life (HRQoL) in patients with psoriasis. METHODS The EPI-PSODE study was a nationwide, multicenter, cross-sectional study conducted in Korea that included 1260 adult patients with psoriasis. In addition to clinical characteristics including presence of exposed lesions, data were collected using the Psoriatic Arthritis (PsA) Screening and Evaluation (PASE), Dermatology Life Quality Index (DLQI), MOS 36-Item Short-Form Health Survey (SF-36), Work Productivity and Activity Impairment Questionnaire Psoriasis (WPAI: PSO) and Medication Satisfaction Questionnaire (MSQ). RESULTS Patients with a DLQI score > 5 (n = 990) were younger, had an earlier onset of psoriasis, scored higher on the Psoriasis Area and Severity Index (PASI), had higher body surface area (BSA) and had higher PASE scores than patients with DLQI ≤ 5 (n = 266). The group of patients with exposed lesions (n = 871) were younger and male predominance, earlier onset of psoriasis, longer disease duration, higher PASI/BSA score and a higher proportion with drinking and smoking history each than the group of patients without exposed lesions (n = 389). Presence of exposed lesions negatively influenced DLQI, 36-Item Short-Form Health Survey (SF-36) (mental component), presenteeism, total work productivity impairment and total activity impairment in the WPAI: PSO. In multiple regression model, PASI score was the only variable which was significantly associated with all HRQoL measures. Presence of exposed lesions was a significant factor affecting DLQI and SF-36 (mental). CONCLUSION The presence of exposed lesions has a negative impact on quality of life, mental health and work productivity. Therefore, effective treatments are particularly needed for psoriasis patients with exposed lesions.
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Affiliation(s)
- S W Youn
- Department of Dermatology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - J-H Lee
- Department of Dermatology, Sungkyunkwan University School of Medicine, Samsung Medical Center, Seoul, Korea
| | - D Y Yu
- Medical Affairs, Janssen Korea, Seoul, Korea
| | - Y Kim
- Medical Affairs, Janssen Korea, Seoul, Korea
| | - B S Kim
- Department of Dermatology, Pusan National University School of Medicine, Busan, Korea
| | - S J Seo
- Department of Dermatology, Chung-Ang University Hospital, Seoul, Korea
| | - Y B Choe
- Department of Dermatology, Konkuk University School of Medicine, Seoul, Korea
| | - S-K Yun
- Department of Dermatology, Chonbuk National University Medical School, Jeonju, Korea
| | - J Park
- Department of Dermatology, Catholic University of Daegu School of Medicine, Daegu, Korea
| | - N I Kim
- Department of Dermatology, KyungHee University Medical center, Seoul, Korea
| | - C W Choi
- Department of Dermatology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - J I Youn
- Department of Dermatology, National Medical Center, Seoul, Korea
| | - S-J Lee
- Department of Dermatology, Kyungpook National University Hospital, Daegu, Korea
| | - M-G Lee
- Department of Dermatology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - K J Kim
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - C J Park
- Department of Dermatology, The Catholic University of Korea, Bucheon St. Mary's Hospital, Bucheon, Korea
| | - Y S Ro
- Department of Dermatology, Hanyang University Medical Center, Seoul, Korea
| | - H J Song
- Department of Dermatology, Korea University Guro Hospital, Seoul, Korea
| | - B S Shin
- Department of Dermatology, Chosun University Hospital, Gwangju, Korea
| | - S K Ahn
- Department of Dermatology, Wonju Severance Christian Hospital, Wonju, Korea
| | - J Y Lee
- Department of Dermatology, Chungbuk National University College of Medicine, Cheongju, Korea
| | - Y H Won
- Department of Dermatology, Chonnam National University Hospital, Gwangju, Korea
| | - M S Jang
- Department of Dermatology, Kosin University College of Medicine, Busan, Korea
| | - K H Kim
- Department of Dermatology, Dong-A University Hospital, Busan, Korea
| | - M H Kim
- Department of Dermatology, Dankook University Hospital, Cheonan, Korea
| | - T Y Kim
- Department of Dermatology, Catholic University of Korea Seoul St. Mary's Hospital, Seoul, Korea
| | - J-H Choi
- Department of Dermatology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
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Yoon JH, Yhim HY, Kwak JY, Ahn JS, Yang DH, Lee JJ, Kim SJ, Kim JS, Park SJ, Choi CW, Eom HS, Park SK, Choi SY, Kim SH, Kim DW, Lee S. Minimal residual disease-based effect and long-term outcome of first-line dasatinib combined with chemotherapy for adult Philadelphia chromosome-positive acute lymphoblastic leukemia. Ann Oncol 2016; 27:1081-1088. [PMID: 26951627 DOI: 10.1093/annonc/mdw123] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [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: 11/29/2015] [Accepted: 02/21/2016] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND The use of imatinib combined with chemotherapy has demonstrated improved outcome in adults with Philadelphia chromosome-positive acute lymphoblastic leukemia (Ph-positive ALL). However, a substantial proportion of patients continue to die as a result of disease progression. PATIENTS AND METHODS We assessed the minimal residual disease (MRD)-based effect and long-term outcome of first-line incorporation of dasatinib (100 mg once daily) into chemotherapy alternatively for adults with Ph-positive ALL. The primary end point was the major molecular response (MMR) rate by the end of the second dasatinib cycle. Patients with a donor proceeded to allogeneic stem cell transplantation (SCT) as early as possible. MRD monitoring was centrally evaluated by real-time quantitative polymerase chain reaction (4.5-log sensitivity) using bone marrow samples. RESULTS Fifty-one patients (median age, 46 years) were enrolled and treated with this strategy. After the first dasatinib cycle, 50 patients (98.0%) achieved complete remission (CR). By the end of the second dasatinib cycle, 46 (93.9%) of 49 assessable patients had persistent CR, and 38 (77.6%) had MMR (32.7%) or undetectable MRD (44.9%). On the basis of the MRD kinetics by this time point, the numbers of early-stable, late, and poor molecular responders were 23 (46.9%), 15 (30.7%), and 11 (22.4%), respectively. Thirty-nine patients (76.5%) underwent allogeneic SCT in CR1. After a median follow-up of 54 months, the 4-year cumulative incidence of relapse and disease-free survival (DFS) rate for all patients were 30.0% and 52.0%, respectively, and the corresponding outcomes among those receiving allogeneic SCT in CR1 were 20.5% and 64.1%, respectively. Poor molecular responders had a higher risk of relapse and DFS than those of early-stable molecular responders. CONCLUSION This dasatinib-based protocol was effective for achieving a good quality molecular response and durable DFS in adults with Ph-positive ALL. TRIAL REGISTRATION clinicaltrials.gov, NCT01004497.
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Affiliation(s)
- J-H Yoon
- Department of Hematology, Catholic BMT Center; Leukemia Research Institute, College of Medicine, The Catholic University of Korea, Seoul
| | - H-Y Yhim
- Division of Hematology-Oncology, Department of Internal Medicine, Chonbuk National University Medical School, Jeonju
| | - J-Y Kwak
- Division of Hematology-Oncology, Department of Internal Medicine, Chonbuk National University Medical School, Jeonju
| | - J-S Ahn
- Department of Hematology-Oncology, Chonnam National University Hwasun Hospital, Jeollanamdo
| | - D-H Yang
- Department of Hematology-Oncology, Chonnam National University Hwasun Hospital, Jeollanamdo
| | - J-J Lee
- Department of Hematology-Oncology, Chonnam National University Hwasun Hospital, Jeollanamdo
| | - S-J Kim
- Division of Hematology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul
| | - J-S Kim
- Division of Hematology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul
| | - S J Park
- Division of Hematology-Oncology, Department of Internal Medicine, Korea University School of Medicine, Seoul
| | - C W Choi
- Division of Hematology-Oncology, Department of Internal Medicine, Korea University School of Medicine, Seoul
| | - H-S Eom
- Hematologic Oncology Clinic, Center for Specific Organs Center, National Cancer Center, Goyang
| | - S-K Park
- Division of Hematology-Oncology, Department of Internal Medicine, Soonchunhyang University School of Medicine, Bucheon, Republic of Korea
| | - S-Y Choi
- Leukemia Research Institute, College of Medicine, The Catholic University of Korea, Seoul
| | - S-H Kim
- Leukemia Research Institute, College of Medicine, The Catholic University of Korea, Seoul
| | - D-W Kim
- Department of Hematology, Catholic BMT Center; Leukemia Research Institute, College of Medicine, The Catholic University of Korea, Seoul
| | - S Lee
- Department of Hematology, Catholic BMT Center; Leukemia Research Institute, College of Medicine, The Catholic University of Korea, Seoul.
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Seo JH, Lee KN, Park SH, Choi CW, Kim BS, Shin SW, Kim YH, Kim JS. Retinoic Acid as a Radiosensitizer on the Head and Neck Squamous Cell Carcinoma Cell Lines. Cancer Res Treat 2015; 33:335-42. [PMID: 26680805 DOI: 10.4143/crt.2001.33.4.335] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
PURPOSE Retinoic acid is a substance that has previously been reported to increase radiosensitivity, but at concentrations likely to inhibit cell growth or to induce celluar differentiation. We choose head and neck cancer cell lines to investigate the role of retinoic acid as a radiosensitizer and to elucidate the mechanism through the changes in the expression of retinoid receptors and squamous cell differentiation marker. MATERIALS AND METHODS Three cell lines (PCI-50, SqCC/ Y1 and UMSCC-11B) were used. 7-AAD staining for apoptosis and Western blot analysis for RAR-alpha, beta, gamma, RXR-alpha, beta, gamma and involucrin were performed after various treatments (control, beta-all-trans-retinoic acid (t-RA) only (10 6 M), radiation only (3 Gy), radiation with t-RA). RESULTS The synergistic radiosensitivity effect of t-RA was seen only radioresistant UMSCC-11B cell line. Expression of RAR-beta was induced by t-RA in maily UMSCC- 11B cell line. RAR-alpha,gamma, and RXR-alpha, beta, gamma expression were not changed in all cell lines tested. Expression of involucrin was inhibited by t-RA in PCI-50 cell line but other two cell lines were not changed by t-RA treatment. CONCLUSION We found that only radioresistant cell line (UMSCC-11B) showed synergistic radiosensitivity effect by t-RA and this mechanism may be through RAR-beta expression induction.
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Choi SH, Park SK, Johnson BJ, Chung KY, Choi CW, Kim KH, Kim WY, Smith B. AMPKα, C/EBPβ, CPT1β, GPR43, PPARγ, and SCD Gene Expression in Single- and Co-cultured Bovine Satellite Cells and Intramuscular Preadipocytes Treated with Palmitic, Stearic, Oleic, and Linoleic Acid. Asian-Australas J Anim Sci 2015; 28:411-9. [PMID: 25656188 PMCID: PMC4341087 DOI: 10.5713/ajas.14.0598] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [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: 08/05/2014] [Revised: 10/02/2014] [Accepted: 10/09/2014] [Indexed: 01/28/2023]
Abstract
We previously demonstrated that bovine subcutaneous preadipocytes promote adipogenic gene expression in muscle satellite cells in a co-culture system. Herein we hypothesize that saturated fatty acids would promote adipogenic/lipogenic gene expression, whereas mono- and polyunsaturated fatty acids would have the opposite effect. Bovine semimembranosus satellite cells (BSC) and intramuscular preadipocytes (IPA) were isolated from crossbred steers and cultured with 10% fetal bovine serum (FBS)/Dulbecco’s Modified Eagle Medium (DMEM) and 1% antibiotics during the 3-d proliferation period. After proliferation, cells were treated for 3 d with 3% horse serum/DMEM (BSC) or 5% FBS/DMEM (IPA) with antibiotics. Media also contained 10 μg/mL insulin and 10 μg/mL pioglitazone. Subsequently, differentiating BSC and IPA were cultured in their respective media with 40 μM palmitic, stearic, oleic, or linoleic acid for 4 d. Finally, BSC and IPA were single- or co-cultured for an additional 2 h. All fatty acid treatments increased (p = 0.001) carnitine palmitoyltransferase-1 beta (CPT1β) gene expression, but the increase in CPT1β gene expression was especially pronounced in IPA incubated with palmitic and stearic acid (6- to 17- fold increases). Oleic and linoleic acid decreased (p = 0.001) stearoyl-CoA desaturase (SCD) gene expression over 80% in both BSC and IPA. Conversely, palmitic and stearic acid increased SCD gene expression three fold in co-cultured in IPA, and stearic acid increased AMPKα gene expression in single- and co-cultured BSC and IPA. Consistent with our hypothesis, saturated fatty acids, especially stearic acid, promoted adipogenic and lipogenic gene expression, whereas unsaturated fatty acids decreased expression of those genes associated with fatty acid metabolism.
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Affiliation(s)
- S H Choi
- Department of Animal Science, Texas Agricultural Experiment Station, Texas A&M University, College Station, TX 77843, USA ; Department of Animal Science, Chungbuk National University, Cheongju 361-763, Korea
| | - S K Park
- Department of Food Science and Technology, Sejong University, Seoul, 143-747, Korea
| | - B J Johnson
- Department of Animal and Food Science, Texas Tech University, Lubbock, TX 79409, USA
| | - K Y Chung
- Hanwoo Research Institute, National Institute of Animal Science, RDA, 232-950, Korea
| | - C W Choi
- Department of Animal Resources, Daegu University, Gyeongsan, 712-749, Korea
| | - K H Kim
- Graduate School of International Agricultural Technology, Seoul National University, Pyeongchang 232-916, Korea . ; Institute of Green Bio Science & Technology, Seoul National University, Pyeongchang, 232-916, Korea
| | - W Y Kim
- Department of Animal Science, Chungbuk National University, Cheongju 361-763, Korea
| | - B Smith
- Department of Animal Science, Texas Agricultural Experiment Station, Texas A&M University, College Station, TX 77843, USA
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Lee JH, Cho S, Paik HD, Choi CW, Nam KT, Hwang SG, Kim SK. Investigation on antibacterial and antioxidant activities, phenolic and flavonoid contents of some thai edible plants as an alternative for antibiotics. Asian-Australas J Anim Sci 2014; 27:1461-8. [PMID: 25178298 PMCID: PMC4150179 DOI: 10.5713/ajas.2013.13629] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [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: 10/05/2013] [Revised: 01/24/2014] [Accepted: 05/01/2014] [Indexed: 11/27/2022]
Abstract
This study was aimed to examine the antibacterial and antioxidative properties of seven edible plants from Thailand to develop alternative antibiotics as feed additives. The plants include Citrus aurantifolia Swingle (Lime) fruits and its leaves, Sesbania grandiflora L. (Agati sesbania) leaves, Piper sarmentosum Roxb (Wild betal) leaves, Curcuma domestica Valeton (Turmeric) roots, Morinda citrifolia L. (Beach mulberry) leaves, Cassia siamea britt (Siamea cassia) leaves, and Cocos nucifera L. (Coconut) peels. The plants were extracted by methanol, n-hexane, chloroform, ethyl acetate, butanol and water. Antibacterial activities with minimum inhibitory concentration (MIC) were determined by agar diffusion assay against Escherichia coli, Burkholderia sp., Haemopilus somnus, Haemopilus parasuis, and Clostridium perfringens that were considered pathogenic strains in livestock infection. Methanol extracts of C. aurantifolia Swingle fruits and leaves showed the broadest spectrum of antibacterial activities except for C. perfringens. Butanol extract of S. grandiflora L. leaves showed the strongest activity against Burkholderia sp. with MIC, 135 μg/mL. P. sarmentosum Roxb leaves showed antibacterial activities against E. coli, Burkholderia sp. and H. parasuis. Ethyl acetate and water extracts from C. domesitca Valeton roots showed MIC of 306 μg/mL and 183 μg/mL, respectively against only C. perfringens. Antioxidative activity was determined by 2-diphenyl-2-picryl hydrazyl photometric assay. The methanol extracts of C. aurantifolia Swingle fruits and P. sarmentosum Roxb leaves showed the highest antioxidant activity among all the extracts with 3.46 mg/mL and 2.70 mg/mL effective concentration 50% (EC50) values, respectively. Total contents of phenolics and flavonoids were measured from the plant extracts. Methanol extracts of S. grandiflora L. and chloroform extracts of C. domestica Valeton were found to have the highest amount of total phenolics, 41.7 and 47.8 μg/mL, respectively. Flavonoid content of methanol extracts in S. grandiflora L. T was 22.5 μg/mL and the highest among plant extracts tested. These results indicated that C. aurantifolia Swingle, S. grandiflora L., P. sarmentosum Roxb, and C. domestica Valeton have antibacterial and antioxidant activities and can be used as alternative antibiotics or potential feed additives for the control of animal pathogenic bacteria.
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Affiliation(s)
- J H Lee
- Department of Food Science and Biotechnology of Animal Resources, Konkuk University, Seoul 143-701, Korea
| | - S Cho
- Department of Food Science and Biotechnology of Animal Resources, Konkuk University, Seoul 143-701, Korea
| | - H D Paik
- Department of Food Science and Biotechnology of Animal Resources, Konkuk University, Seoul 143-701, Korea
| | - C W Choi
- Department of Biology and Medicinal Science, Paichai University, Daejeon 302-735, Korea
| | - K T Nam
- Division of Animal Life and Environmental Science, Hankyong National University, Anseong 456-749, Korea
| | - S G Hwang
- Division of Animal Life and Environmental Science, Hankyong National University, Anseong 456-749, Korea
| | - S K Kim
- Department of Food Science and Biotechnology of Animal Resources, Konkuk University, Seoul 143-701, Korea
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Kim DH, Kim KH, Nam IS, Lee SS, Choi CW, Kim WY, Kwon EG, Lee KY, Lee MJ, Oh YK. Effect of indigenous herbs on growth, blood metabolites and carcass characteristics in the late fattening period of hanwoo steers. Asian-Australas J Anim Sci 2014; 26:1562-8. [PMID: 25049742 PMCID: PMC4093822 DOI: 10.5713/ajas.2013.13132] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/03/2013] [Revised: 06/27/2013] [Accepted: 05/29/2013] [Indexed: 11/27/2022]
Abstract
This study was conducted to evaluate the effects of indigenous herbal supplements on growth, blood metabolites and carcass characteristics in the late fattening period of Hanwoo steers. In a 6 month feeding trial, thirty Hanwoo steers (647±32 kg) were allotted to one of 5 treatment groups, control (basal diet contained lasalocid), licorice, clove, turmeric and silymarin, with six steers per pen. All groups received ad libitum concentrate and 1 kg rice straw/animal/d throughout the feeding trial. Blood samples were collected at the beginning, middle, and the end of the experiment and the steers were slaughtered at the end. Blood glucose, triglyceride, total protein, and albumin concentrations were higher in the turmeric treatment compared with other treatments. Blood urea nitrogen and creatinine concentrations were highest (p<0.003 and p = 0.071, respectively) in steers treated with silymarin. Alanine aminotransferase activity was lower (p<0.06) for licorice and silymarin compared with the control group. There were no alterations in serum aspartate aminotransferase and gamma glutamyltransferase activities as a consequence of herb treatments (p = 0.203 and 0.135, respectively). Final body weight, body weight gain, average dairy gain and dry matter intake were not significantly different among treatments. Yield grade, marbling score and quality grade were higher for silymarin group than those of the control group (p<0.05). Therefore, the results suggest that silymarin can be used an effective dietary supplement as an alternative to antibiotic feed additive and a productivity enhancer, providing safe and more consumer acceptable alternative to synthetic compounds during the late fattening period of steers.
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Affiliation(s)
- D H Kim
- National Institute of Animal Science, RDA, Suwon, 441-706, Korea
| | - K H Kim
- National Institute of Animal Science, RDA, Suwon, 441-706, Korea
| | - I S Nam
- National Institute of Animal Science, RDA, Suwon, 441-706, Korea
| | - S S Lee
- National Institute of Animal Science, RDA, Suwon, 441-706, Korea
| | - C W Choi
- National Institute of Animal Science, RDA, Suwon, 441-706, Korea
| | - W Y Kim
- National Institute of Animal Science, RDA, Suwon, 441-706, Korea
| | - E G Kwon
- National Institute of Animal Science, RDA, Suwon, 441-706, Korea
| | - K Y Lee
- National Institute of Animal Science, RDA, Suwon, 441-706, Korea
| | - M J Lee
- National Institute of Animal Science, RDA, Suwon, 441-706, Korea
| | - Y K Oh
- National Institute of Animal Science, RDA, Suwon, 441-706, Korea
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Lee SB, Choi CW, Jin YC, Wang T, Lee KH, Ku MB, Hwang JH, Kim KH, Vega RSA, Lee HG. Effect of Oral Administration of Intact Casein on Gastrointestinal Hormone Secretion and Pancreatic α-Amylase Activity in Korean Native Steer. Asian-Australas J Anim Sci 2014; 26:654-60. [PMID: 25049835 PMCID: PMC4093330 DOI: 10.5713/ajas.2012.12510] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/18/2012] [Revised: 02/14/2013] [Accepted: 11/15/2012] [Indexed: 11/27/2022]
Abstract
Three Korean native steers (779±24 kg) fitted with duodenal cannulas were used in a 3×3 Latin square design to investigate the influence of oral administration of soluble proteins, intact casein (IC) and acid hydrolyzed casein (AHC), on gastrointestinal hormone (GIH) secretion in the blood and pancreatic α-amylase activity in the duodenum. Oral treatment consisted of a basic diet (control), IC (C+100% protein), or AHC (C+80% amino acid, 20% peptide) for 21 d. Blood and duodenum samples were collected for measurement of serum GI hormones, and pancreatic α-amylase activity was determined at 900, 1030, 1330, 1630, and 1930 h after feeding on d 21 of treatment. The levels of serum cholecystokinin (CCK) and secretin in the IC treatment group were higher compared to the other treatment groups (p<0.05). In addition to the changes in CCK and secretin levels upon IC treatment, the pancreatic α-amylase activity in the duodenum was higher in the IC group compared to the control diet group (p<0.05). The response of serum ghrelin to IC and AHC treatment was in accordance with the response of serum secretin. The level of peptide fragments flowing in the duodenum was higher in the IC treatment group than the other treatment groups (p<0.05). In conclusion, this study demonstrated that an increase in duodenal CCK and secretin upon IC oral administration increased pancreatic α-amylase secretion. In addition, ghrelin may be associated with GI hormone secretion in Korean native steers.
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Affiliation(s)
- S B Lee
- Department of Animal Science and Technology, College of Animal Bioscience and Technology, Konkuk University, Seoul 143-701, Korea
| | - C W Choi
- Department of Animal Science and Technology, College of Animal Bioscience and Technology, Konkuk University, Seoul 143-701, Korea
| | - Y C Jin
- Department of Animal Science and Technology, College of Animal Bioscience and Technology, Konkuk University, Seoul 143-701, Korea
| | - T Wang
- Department of Animal Science and Technology, College of Animal Bioscience and Technology, Konkuk University, Seoul 143-701, Korea
| | - K H Lee
- Department of Animal Science and Technology, College of Animal Bioscience and Technology, Konkuk University, Seoul 143-701, Korea
| | - M B Ku
- Department of Animal Science and Technology, College of Animal Bioscience and Technology, Konkuk University, Seoul 143-701, Korea
| | - J H Hwang
- Department of Animal Science and Technology, College of Animal Bioscience and Technology, Konkuk University, Seoul 143-701, Korea
| | - K H Kim
- Department of Animal Science and Technology, College of Animal Bioscience and Technology, Konkuk University, Seoul 143-701, Korea
| | - R S A Vega
- Department of Animal Science and Technology, College of Animal Bioscience and Technology, Konkuk University, Seoul 143-701, Korea
| | - H G Lee
- Department of Animal Science and Technology, College of Animal Bioscience and Technology, Konkuk University, Seoul 143-701, Korea
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Fang WJ, Lam KO, Ng SCY, Choi CW, Kwong DLW, Zheng SS, Lee VHF. Manual contouring based volumetric evaluation for colorectal cancer with liver limited metastases: a comparison with RECIST. Asian Pac J Cancer Prev 2014; 14:4151-5. [PMID: 23991968 DOI: 10.7314/apjcp.2013.14.7.4151] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND To compare response evaluation criteria in solid tumours (RECIST) and volumetric evaluation (VE) for colorectal cancer with liver-limited metastasis. PATIENTS AND METHODS VE of liver metastases was performed by manual contouring before and after chemotherapy on 45 pairs of computed tomography (CT) images in 36 patients who suffered from metastatic colorectal cancer (mCRC) with liver metastasis only. Cohen kappa was used to compare the agreement between VE and RECIST. Pearson correlation was performed for their comparison after cubic root transformation of the aggregate tumor volumes. Logistic regression was done to identify clinical and radiographic factors to account for the difference which may be predictive in overall response (OR). RESULTS There were 16 partial response (PR), 23 stable disease (SD) and 6 progressive disease (PD) cases with VE, and 14 PR, 23 SD and 8 PD with RECIST. VE demonstrated good agreement with RECIST (κ=0.779). Discordant objective responses were noted in 6 pairs of comparisons (13.3%). Pearson correlation also showed excellent correlation between VE and RECIST (r2=0.966, p<0.001). Subgroup analysis showed that VE was in slightly better agreement with RECIST for enlarging lesions than for shrinking lesions (r2=0.935 and r2=0.780 respectively). No factor was found predictive of the difference in OR between VE and RECIST. CONCLUSIONS VE exhibited good agreement with RECIST. It might be more useful than RECIST in evaluation shrinking lesions in cases of numerous and conglomerate liver metastases.
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Affiliation(s)
- W J Fang
- First Affiliated Hospital, School of Medicine, Zhe Jiang University, China
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Choi SH, Gang GO, Sawyer JE, Johnson BJ, Kim KH, Choi CW, Smith SB. Fatty acid biosynthesis and lipogenic enzyme activities in subcutaneous adipose tissue of feedlot steers fed supplementary palm oil or soybean oil. J Anim Sci 2013; 91:2091-8. [PMID: 23463571 DOI: 10.2527/jas.2012-5801] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
We hypothesized that supplementing finishing diets with palm oil would promote adipocyte differentiation in subcutaneous adipose tissue of feedlot steers, and that soybean oil supplementation would depress adipocyte differentiation. Twenty-eight Angus steers were assigned randomly to 3 groups of 9 or 10 steers and fed a basal diet without additional fat (control), with 3% palm oil (rich in palmitic acid), or with 3% soybean oil (rich in polyunsaturated fatty acids), for 10 wk, top-dressed daily. Palm oil had no effect (P > 0.05) on ADG, food intake, or G:F, whereas soybean oil depressed ADG (P = 0.02), food intake (P = 0.04), and G:F (P = 0.05). Marbling scores tended (P = 0.09) to be greater in palm oil-fed steers (Modest(09)) than in soybean oil-fed steers (Small(55)). Subcutaneous adipocyte mean volume was greater in palm oil-fed steers (515.9 pL) than in soybean-supplemented cattle (395.6 pL; P = 0.01). Similarly, glucose and acetate incorporation into total lipids in vitro was greater in subcutaneous adipose tissue of palm oil-fed steers (119.9 and 242.8 nmol·3h(-1)·10(5) cells, respectively) than adipose tissue of soybean oil-fed steers in (48.9 and 95.8 nmol·3h(-1)·10(5) cells, respectively). Glucose-6-phosphate dehydrogenase and NADP-malate dehydrogenase activities were greater (P ≤ 0.05) in subcutaneous adipose tissue of palm oil-fed steers than in adipose tissue of control steers. Palm oil did not increase palmitic acid or decrease oleic acid in subcutaneous adipose tissue or LM, but decreased (P ≤ 0.05) myristoleic, palmitoleic, and cis-vaccenic acid in adipose tissue, indicating a depression in stearoyl-coenzyme A desaturase activity. Soybean oil increased the proportion of α-linolenic acid in adipose tissue and muscle and increased linoleic acid and 18:1trans-10 in muscle. We conclude that palm oil supplementation promoted lipid synthesis in adipose tissue without depressing feed efficiency or increasing the palmitic acid content of beef.
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Affiliation(s)
- S H Choi
- Department of Animal Science, Texas A & M University, College Station, TX 77843, USA
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Cho SB, Han IK, Kim YY, Park SK, Hwang OH, Choi CW, Yang SH, Park KH, Choi DY, Yoo YH. Effect of lysine to digestible energy ratio on growth performance and carcass characteristics in finishing pigs. Asian-Australas J Anim Sci 2012; 25:1582-7. [PMID: 25049520 PMCID: PMC4093041 DOI: 10.5713/ajas.2012.12311] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/07/2012] [Revised: 08/30/2012] [Accepted: 07/29/2012] [Indexed: 11/27/2022]
Abstract
This experiment was performed to investigate the effects of lysine (Lys) to DE ratio on growth performance, and carcass characterics in finishing barrows. Ninety six cross-bred finishing barrows ((Landrace×Yorkshire) ×Duroc, average BW 58.25±0.48 kg) were assigned as a randomized complete block design by 2 energy levels and 4 Lys:DE ratios on the basis of BW to one of 8 treatments with 3 replications with 4 animals per pen. The levels of DE and Lys:DE ratio for each treatment were i) DE 3.35 Mcal/kg, 1.5 g Lys/Mcal DE, ii) DE 3.35 Mcal/kg, 1.8 g Lys/Mcal DE, iii) DE 3.35 Mcal/kg, 2.1 g Lys/Mcal DE, iv) DE 3.35 Mcal/kg, 2.4 g Lys/Mcal DE, v) DE 3.60 Mcal/kg, 1.5 g Lys/Mcal DE, vi) DE 3.60 Mcal/kg, 1.8 g Lys/Mcal DE, vii) DE 3.60 Mcal/kg, 2.1 g Lys/Mcal DE, viii) DE 3.60 Mcal/kg, 2.4 g Lys/Mcal DE. During finishing period from 58 kg to 103 kg of BW, increased energy density in the diet increased (p<0.05) ADG and gain:feed ratio, but did not influence ADFI. As Lys:DE ratio was increased, ADG, ADFI and gain:feed ratio were improved in finishing barrows (p<0.05). There were positive interactions (p<0.05) between carcass weight, grade, and backfat thickness and energy density and Lys level (p<0.05). In conclusion, data from our current study suggest that maximum yields including ADG, gain:feed ratio, carcass weight and grade can be achieved by administrating finishing pigs with an ideal Lys:DE ratio, Lys 2.1 g/DE Mcal.
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Choi CW, Kim KH, Chang SS, Choi NJ. Soluble Non-ammonia Nitrogen in Ruminal and Omasal Digesta of Korean Native Steers Supplemented with Soluble Proteins. Asian-Australas J Anim Sci 2012; 25:1269-75. [PMID: 25049690 PMCID: PMC4092946 DOI: 10.5713/ajas.2012.12318] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/08/2012] [Revised: 07/03/2012] [Accepted: 06/20/2012] [Indexed: 11/27/2022]
Abstract
An experiment was conducted to study the effect of soluble protein supplements on concentration of soluble non-ammonia nitrogen (SNAN) in the liquid phase of ruminal (RD) and omasal digesta (OD) of Korean native steers, and to investigate diurnal pattern in SNAN concentration in RD and OD. Three ruminally cannulated Korean native steers in a 3×3 Latin square design consumed a basal diet of rice straw and corn-based concentrate (control), and that supplemented (kg/d DM basis) with intact casein (0.24; IC) or acid hydrolyzed casein (0.46; AHC). Ruminal digesta was sampled using a vacuum pump, whereas OD was collected using an omasal sampling system at 2.0 h intervals after a morning feeding. The SNAN fractions (free amino acid (AA), peptide and soluble protein) in RD and OD were assessed using the ninhydrin assay. Concentrations of free AA and total SNAN in RD were significantly (p<0.05) lower than those in OD. Although free AA concentration was relatively high, mean peptide was quantitatively the most important fraction of total SNAN in both RD and OD, indicating that degradation of peptide to AA rather than hydrolysis of soluble protein to peptide or deamination may be the most limiting step in rumen proteolysis of Korean native steers. Diurnal variation in peptide concentration in OD for the soluble protein supplemented diets during the feeding cycle peaked 2 h post-feeding and decreased thereafter whereas that for the control was relatively constant during the entire feeding cycle. Diurnal variation in peptide concentration was rather similar between RD and OD.
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Affiliation(s)
- C W Choi
- National Institute of Animal Science, RDA, 441-706, Korea
| | - K H Kim
- National Institute of Animal Science, RDA, 441-706, Korea
| | - S S Chang
- National Institute of Animal Science, RDA, 441-706, Korea
| | - N J Choi
- Department of Animal Science, Chonbuk National University, Jeonju, 561-756, Korea
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Choi CW, Choi JW, Park KC, Youn SW. Ultraviolet-induced red fluorescence of patients with acne reflects regional casual sebum level and acne lesion distribution: qualitative and quantitative analyses of facial fluorescence. Br J Dermatol 2012; 166:59-66. [PMID: 21895623 DOI: 10.1111/j.1365-2133.2011.10598.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
BACKGROUND The ultraviolet (UV)-induced red fluorescence of patients with acne has been considered to be caused by Propionibacterium acnes. OBJECTIVES To study the correlation of the facial red fluorescence with the casual sebum level and the number of acne lesions and to investigate the difference in clinical features, according to both distribution and proportion of fluorescence. METHODS A total of 878 patients clinically diagnosed with acne vulgaris were included. Inflammatory and noninflammatory acne lesions were counted separately. UV fluorescent photography and casual sebum level measurements were performed. UV-induced fluorescence patterns were classified according to the facial distribution. The proportions of UV-induced red fluorescence were calculated. RESULTS We identified six different fluorescence distribution patterns in the T-zone (the forehead, nose and chin) and three different patterns in the U-zone (both cheeks). The proportion of fluorescence in the U-zone showed a positive correlation with the casual sebum level and the number of acne lesions. In the T-zone, the fluorescence proportion correlated with the casual sebum level, but not with the number of acne lesions. As the patients' age and the age at onset increased, the distribution of fluorescence changed from the upper part of the T-zone to the lower part, and to the centre of the face in the U-zone. CONCLUSIONS Our results support the hypothesis that the origin of facial red fluorescence is sebum. In patients with acne, analyses of the pattern and proportion of UV-induced red fluorescence can be useful for evaluating the sebum secretion and selecting efficient treatment modalities.
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Affiliation(s)
- C W Choi
- Department of Dermatology, Seoul National University College of Medicine, and Seoul National University Bundang Hospital, 166 Gumi-10, Seongnam, Gyeonggi 463-707, Korea
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Brooks MA, Choi CW, Lunt DK, Kawachi H, Smith SB. Subcutaneous and intramuscular adipose tissue stearoyl-coenzyme A desaturase gene expression and fatty acid composition in calf- and yearling-fed Angus steers. J Anim Sci 2011; 89:2556-70. [PMID: 21454869 DOI: 10.2527/jas.2010-3369] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
We proposed that stearoyl-CoA desaturase (SCD) activity dictates fatty acid composition of adipose tissue and muscle in beef cattle, regardless of ruminal or hepatic fatty acid hydrogenation or desaturation. Twelve Angus steers were assigned to a calf-fed (CF) group and slaughtered at weaning (8 mo of age; n=4), 12 mo of age (n=4), or 16 mo of age (n=4). Twelve steers were assigned to a yearling-fed (YF) group and slaughtered at 12 mo of age (n=4), 16 mo of age (n=4), and 17.5 mo of age (n=4; 525 kg, market weight). Data were analyzed based on time on the corn-based finishing diet, with terminal age as a covariate, and orthogonal polynomial contrasts were tested on the main effects of treatment group and time on the finishing diet. Fatty acids from duodenal digesta, plasma, liver, LM, and subcutaneous and intramuscular adipose tissue were measured, and SCD gene expression was measured in intramuscular and subcutaneous adipose tissues. In duodenal digesta, palmitic and linoleic acids increased by 100% over the sampling period, α-linolenic acid decreased over the sampling period, and trans-vaccenic acid was greater in YF than in CF steers (all P < 0.01). The proportion of α-linolenic acid decreased over time in all tissues, including liver. The SCD index (ratio of SCD fatty acid products to SCD fatty acid substrates) increased over time in LM and in intramuscular and subcutaneous adipose tissues. The SCD:glyceraldehyde 3-phosphate dehydrogenase mRNA ratio was virtually undetectable at the initial sampling periods in subcutaneous adipose tissue of YF and CF steers, and it increased over time (P < 0.01). The SCD index and SCD:glyceraldehyde 3-phosphate dehydrogenase ratio were greater in intramuscular adipose tissue of CF steers than in that of YF steers. The SCD index did not change over time in liver and decreased over time in duodenal digesta. We conclude that, unlike essential fatty acids, the SFA and MUFA composition of adipose tissue is regulated by adipose tissue fatty acid desaturation, with little contribution from hepatic or duodenal fatty acids.
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Affiliation(s)
- M A Brooks
- Department of Animal Science, Texas Agricultural Experiment Station, Texas A&M University, College Station 77843, USA
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Choi CW, Lee DH, Kim HS, Kim BY, Park KC, Youn SW. The clinical features of late onset acne compared with early onset acne in women. J Eur Acad Dermatol Venereol 2011; 25:454-61. [DOI: 10.1111/j.1468-3083.2010.03813.x] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Yau TK, Choi CW, Ng E, Yeung R, Soong IS, Lee AWM. Delayed presentation of symptomatic breast cancers in Hong Kong: experience in a public cancer centre. Hong Kong Med J 2010; 16:373-377. [PMID: 20890002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2023] Open
Abstract
OBJECTIVE Delayed presentation is an important obstacle to improving cancer treatment outcomes. We aimed to study the magnitude of this problem in Hong Kong and the factors associated with delayed presentation of patients with symptomatic breast cancers. DESIGN Retrospective study using self-administered questionnaires. SETTING Clinical Oncology Department in a regional public hospital in Hong Kong. PATIENTS A total of 158 Chinese women with breast cancer referred to our hospital between October 2006 and December 2007 consented to participate in this study. Among these, 59 (37%) patients were referred after having surgery in private sector. RESULTS The mean total delay (from first symptom to treatment) was 22 weeks. The mean patient delay (from first symptom to first consultation) was 13 weeks, constituting the largest component (60%) of the total delay. After symptom onset, the delay exceeded 12 weeks for consulting a doctor in 29%, and for receipt of treatment in 52% of them. Low family income (<HK$5000 per month; P<0.001) and surgery in public hospitals (P=0.013) were both independent predictors of patient delay. Surgery in public hospitals (P=0.006) and low family income (P=0.005) were the only predictors of doctor/system delay and total delay, respectively. CONCLUSIONS Delayed presentation and treatment of symptomatic breast cancer remains an important issue in Hong Kong. Apart from socio-economic factors, limited access to public medical care was likely an important contributing factor in delays related to patients as well as to doctor/system.
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Affiliation(s)
- T K Yau
- Department of Clinical Oncology, Pamela Youde Nethersole Eastern Hospital, Chai Wan, Hong Kong.
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Kim MK, Suh C, Lee DH, Min CK, Kim SJ, Kim K, Moon JH, Yoon SS, Lee GW, Kang HJ, Kim SH, Choi CW, Eom HS, Kwak JY, Kim HJ, Mun YC, Bang SM, Lee K, Shin HJ, Lee JH. Immunoglobulin D multiple myeloma: response to therapy, survival, and prognostic factors in 75 patients. Ann Oncol 2010; 22:411-6. [PMID: 20682550 DOI: 10.1093/annonc/mdq393] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND To analyze the clinical features, outcomes including efficacy of treatment, and prognostic factors of patients with immunoglobulin D multiple myeloma (IgD MM). DESIGN AND METHODS Seventy-five patients diagnosed with IgD MM were selected from the Korean Myeloma Registry database (www.myeloma.or.kr). RESULTS Median age was 57 years and the main presenting features were bone pain (77%). Renal function impairment and hypercalcemia were present in 40 (53%) and 20 (27%) patients. Sixty-seven patients (89%) had lambda light chains. Forty-eight patients (64%) were of stage III by International Staging System. Twenty-six patients (53%) had chromosomal abnormalities mostly by conventional cytogenetics. Thirty-nine patients (54%) were treated with vincristine, adriamycin, and dexamethasone chemotherapy; the overall response rate (ORR) of 56%. Sixteen patients (22%) received first-line chemotherapy including new drugs (bortezomib or thalidomide), with an ORR of 81%. At a median follow-up time of 28.6 months, median overall survival (OS) was 18.5 months. Age, extramedullary plasmacytoma, del(13) or hypoploidy, serum β(2) microglobulin level, and platelet count were significant prognostic factors for OS. CONCLUSIONS IgD MM is an aggressive disease that is usually detected at an advanced stage. Despite a positive initial response, survival after relapse was dismal. Intensive treatment strategies before and following stem cell transplantation may improve outcomes in younger patients.
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Affiliation(s)
- M K Kim
- Department of Internal Medicine, Yeungnam University Medical Center, Yeungnam University College of Medicine, Daegu
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Lee AWM, Tung SY, Chua DTT, Ngan RKC, Chappell R, Tung R, Siu L, Ng WT, Sze WK, Au GKH, Law SCK, O'Sullivan B, Yau TK, Leung TW, Au JSK, Sze WM, Choi CW, Fung KK, Lau JT, Lau WH. Randomized trial of radiotherapy plus concurrent-adjuvant chemotherapy vs radiotherapy alone for regionally advanced nasopharyngeal carcinoma. J Natl Cancer Inst 2010; 102:1188-98. [PMID: 20634482 DOI: 10.1093/jnci/djq258] [Citation(s) in RCA: 248] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Current practice of adding concurrent-adjuvant chemotherapy to radiotherapy (CRT) for treating advanced nasopharyngeal carcinoma is based on the Intergroup-0099 Study published in 1998. However, the outcome for the radiotherapy-alone (RT) group in that trial was substantially poorer than those in other trials, and there were no data on late toxicities. Verification of the long-term therapeutic index of this regimen is needed. METHODS Patients with nonkeratinizing nasopharyngeal carcinoma staged T1-4N2-3M0 were randomly assigned to RT (176 patients) or to CRT (172 patients) using cisplatin (100 mg/m(2)) every 3 weeks for three cycles in concurrence with radiotherapy, followed by cisplatin (80 mg/m(2)) plus fluorouracil (1000 mg per m(2) per day for 4 days) every 4 weeks for three cycles. Primary endpoints included overall failure-free rate (FFR) (the time to first failure at any site) and progression-free survival. Secondary endpoints included overall survival, locoregional FFR, distant FFR, and acute and late toxicity rates. All statistical tests were two-sided. RESULTS The two treatment groups were well balanced in all patient characteristics, tumor factors, and radiotherapy parameters. Adding chemotherapy statistically significantly improved the 5-year FFR (CRT vs RT: 67% vs 55%; P = .014) and 5-year progression-free survival (CRT vs RT: 62% vs 53%; P = .035). Cumulative incidence of acute toxicity increased with chemotherapy by 30% (CRT vs RT: 83% vs 53%; P < .001), but the 5-year late toxicity rate did not increase statistically significantly (CRT vs RT: 30% vs 24%; P = .30). Deaths because of disease progression were reduced statistically significantly by 14% (CRT vs RT: 38% vs 24%; P = .008), but 5-year overall survival was similar (CRT vs RT: 68% vs 64%; P = .22; hazard ratio of CRT = 0.81, 95% confidence interval = 0.58 to 1.13) because deaths due to toxicity or incidental causes increased by 7% (CRT vs RT: 1.7% vs 0, and 8.1% vs 3.4%, respectively; P = .015). CONCLUSIONS Adding concurrent-adjuvant chemotherapy statistically significantly reduced failure and cancer-specific deaths when compared with radiotherapy alone. Although there was no statistically significant increase in major late toxicity, increase in noncancer deaths narrowed the resultant gain in overall survival.
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Affiliation(s)
- Anne W M Lee
- Department of Clinical Oncology, Pamela Youde Nethersole Eastern Hospital, Chai Wan, Hong Kong, China.
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Yau TK, Choi CW, Sze H, Soong IS, Lee AWM. Should young age be a contra-indication to breast conservation treatment in Chinese women? Twelve-year experience from a public cancer centre in Hong Kong. Hong Kong Med J 2009; 15:94-99. [PMID: 19342734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023] Open
Abstract
OBJECTIVE It has been proposed that young women should not be treated by breast conservation treatment because of a higher risk of local recurrences and worse survival. We therefore examined whether breast conservation treatment in young Chinese women yielded inferior clinical outcomes compared to modified radical mastectomy. DESIGN Retrospective study. SETTING Clinical oncology department in a public hospital in Hong Kong. PATIENTS A total of 258 Chinese women with invasive breast cancer, aged below 40 years, and referred between January 1994 and July 2006. RESULTS A total of 124 (48%) and 134 (52%) patients were treated by breast conservation treatment and modified radical mastectomy, respectively. Mastectomy patients tended to have larger primary tumours (P<0.001) and more nodal involvement (P<0.001). At a median follow-up of 6.5 years, there was no significant difference in the local failure-free survival rate (92% vs 93%, P=0.324) and loco-regional failure-free survival rate (89% vs 88%, P=0.721) in patients having breast conservation treatment and mastectomy. Probably due to their earlier presentation with disease, the former actually had better 6-year distant failure-free survival (88% vs 71%, P=0.002) and overall survival (92% vs 81%, P=0.173) rates. Multivariate analyses showed that both the resection margin status (hazard ratio=2.77, P=0.050) and the presence of peritumoural vascular invasion (hazard ratio=3.01, P=0.038) were independent predictors of local recurrence; the nodal status (hazard ratio=3.91, P<0.001) was the only predictive factor for overall survival. The choice of breast conservation treatment (vs modified radical mastectomy) had no apparent adverse impact on all the clinical outcome parameters analysed. CONCLUSION Breast conservation treatment is a reasonable option for many suitably selected young Chinese women.
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Affiliation(s)
- T K Yau
- Department of Clinical Oncology, Pamela Youde Nethersole Eastern Hospital, 3 Lok Man Road, Chai Wan, Hong Kong.
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Jang M, Kim HK, Choi CW, Kang CS. Thyroid dose estimation with potassium iodide (KI) administration in a nuclear emergency. Radiat Prot Dosimetry 2008; 132:303-307. [PMID: 19054795 DOI: 10.1093/rpd/ncn299] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
In a breach-of-containment nuclear reactor accident, the near-field exposure is primarily through inhalation of radioiodine. Thyroid blockade by oral potassium iodide (KI) is a practical and effective protective measure for the general public in such an emergency. The retention functions incorporating the thyroid blocking effects by KI have been derived using a standard three-compartment model of iodine metabolism. This allows more accurate estimation of the thyroid dose by calculating the blocking factor.
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Affiliation(s)
- M Jang
- National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Science, Seoul, South Korea.
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Smith SB, Kawachi H, Choi CB, Choi CW, Wu G, Sawyer JE. Cellular regulation of bovine intramuscular adipose tissue development and composition. J Anim Sci 2008; 87:E72-82. [PMID: 18997081 DOI: 10.2527/jas.2008-1340] [Citation(s) in RCA: 95] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
It is well documented that grain feeding stimulates adipogenesis in beef cattle, whereas pasture feeding depresses the development of adipose tissues, including intramuscular (i.m.) adipose tissue. Additionally, production practices that depress adipocyte differentiation also limit the synthesis of MUFA. Marbling scores and MUFA increase in parallel suggesting that stearoyl-coenzyme A desaturase (SCD) gene expression is closely associated with and necessary for marbling adipocyte differentiation. Similarly, marbling scores and fatty acid indices of SCD activity are depressed in response to dietary vitamin A restriction. In bovine preadipocytes, vitamins A and D both decrease glycerol-3-phosphate dehydrogenase (GPDH) activity, an index of adipocyte differentiation, whereas incubation of bovine preadipocytes with l-ascorbic acid-2-phosphate increases GPDH activity. Exposing bovine preadipocytes to zinc also stimulates adipogenesis, putatively by inhibiting nitric oxide (NO) production. However, incubation of bovine preadipocytes with arginine, a biological precursor of NO, strongly promotes differentiation in concert with increased SCD expression. This suggests that the effect of either arginine or zinc on adipogenesis is independent of NO synthesis in bovine preadipocytes. Enhanced expression of SCD is associated with a greater accumulation of MUFA both in bovine preadipocyte cultures and during development in growing steers. In bovine preadipocytes, trans-10, cis-12 CLA strongly depresses adipocyte differentiation and SCD gene expression, thereby reducing MUFA concentrations. The bovine preadipocyte culture studies suggest that any production practice that elevates vitamins A or D or trans-10, cis-12 CLA in bovine adipose tissue will reduce i.m. adipose tissue development. Conversely, supplementation with vitamin C or zinc may promote the development of i.m. adipose tissue.
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Affiliation(s)
- S B Smith
- Department of Animal Science, Texas A&M University, College Station, TX 77843-2471, USA.
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Lee AWM, Ng WT, Hung WM, Choi CW, Tung R, Ling YH, Cheng PTC, Yau TK, Chang ATY, Leung SKC, Lee MCH, Bentzen SM. Major late toxicities after conformal radiotherapy for nasopharyngeal carcinoma-patient- and treatment-related risk factors. Int J Radiat Oncol Biol Phys 2008; 73:1121-8. [PMID: 18723296 DOI: 10.1016/j.ijrobp.2008.05.023] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2008] [Revised: 05/13/2008] [Accepted: 05/14/2008] [Indexed: 11/26/2022]
Abstract
PURPOSE To retrospectively analyze the factors affecting late toxicity for nasopharyngeal carcinoma. METHODS AND MATERIALS Between 1998 and 2003, 422 patients were treated with a conformal technique with 2-Gy daily fractions to a total dose of 70 Gy. Conventional fractionation (5 fractions weekly) was used in 232 patients and accelerated fractionation (6 fractions weekly) in 190 patients. One hundred seventy-one patients were treated with the basic radiotherapy course alone (Group 1), 55 patients had an additional boost of 5 Gy in 2 fractions (Group 2), and 196 patients underwent concurrent cisplatin-based chemotherapy (Group 3). RESULTS The 5-year overall toxicity rate was significantly greater in Group 3 than in Group 1 (37% vs. 27%, p = 0.009). Although the overall rate in Group 2 was not elevated (28% vs. 27%, p = 0.697), a significant increase in temporal lobe necrosis was observed (4.8% vs. 0%, p = 0.015). Multivariate analyses showed that age and concurrent chemotherapy were significant factors. The hazard ratio of overall toxicity attributed to chemotherapy was 1.99 (95% confidence interval, 1.32-2.99, p = 0.001). The mean radiation dose to the cochlea was another significant factor affecting deafness, with a hazard ratio of 1.03 (95% confidence interval, 1.01-1.05, p = 0.005) per 1-Gy increase. The cochlea that received >50 Gy had a significantly greater deaf rate (Group 1, 18% vs. 7%; and Group 3, 22% vs. 14%). CONCLUSION The therapeutic margin for nasopharyngeal carcinoma is extremely narrow, and a significant increase in brain necrosis could result from dose escalation. The significant factors affecting the risk of deafness included age, concurrent chemoradiotherapy, and greater radiation dose to the cochlea.
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Affiliation(s)
- Anne W M Lee
- Department of Clinical Oncology, Pamela Youde Nethersole Eastern Hospital, Hong Kong.
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Jang M, Kim HK, Choi CW, Kang CS. Age-dependent potassium iodide effect on the thyroid irradiation by 131I and 133I in the nuclear emergency. Radiat Prot Dosimetry 2008; 130:499-502. [PMID: 18337292 DOI: 10.1093/rpd/ncn068] [Citation(s) in RCA: 9] [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] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The initial near-field exposure is primarily through inhalation in a nuclear emergency and the dominant contribution to the effective inhalation dose comes from radioiodine. Thyroid blockade by oral potassium iodide (KI) is efficient and practical for public in the nuclear emergency. Age-dependent radioprotective effect of KI on the thyroid irradiation by (131)I and (133)I has been derived using the simplified compartment model of iodine metabolism and WinSAAM program. Administration of KI within 2 h after (131)I and (133)I intake can block thyroid uptake significantly, yielding protective effect of 78.9% and 74.3%, respectively, for (131)I and (133)I for adults. The mean absorbed doses decrease with age, while protective effects of KI are similar for all age groups.
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Affiliation(s)
- M Jang
- National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Science, Seoul, Korea.
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Kim SJ, Kim BS, Choi CW, Choi J, Kim I, Lee YH, Kim JS. Ki-67 expression is predictive of prognosis in patients with stage I/II extranodal NK/T-cell lymphoma, nasal type. Ann Oncol 2007; 18:1382-7. [PMID: 17693651 DOI: 10.1093/annonc/mdm183] [Citation(s) in RCA: 80] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND Localized extranodal natural killer (NK)/T-cell lymphoma, nasal type, commonly has a low or low-intermediate risk of the international prognostic index (IPI), so the IPI has shown inconsistency in predicting prognosis. Thus, we analyzed Ki-67 expression and proposed a new prognostic model including Ki-67 expression for stage I/II extranodal NK/T-cell lymphoma. PATIENTS AND METHODS We studied Ki-67 expression and its relationship with prognosis in 50 patients with extranodal NK/T-cell lymphoma. RESULTS The patients were dichotomized by the median value: low (<65%) versus high Ki-67 (> or =65%). High Ki-67 was associated with a worse overall survival (OS; P = 0.021) and disease-free survival (DFS; P = 0.044). In multivariate analysis, Ki-67 expression and primary site of involvement were found to be an independent prognostic factor for OS and DFS (P < 0.05). Based on these results, we proposed a new clinico-pathological prognostic model with Ki-67 expression and the primary site of involvement. It showed a high degree of correlation with worse OS and DFS (P < 0.001). CONCLUSIONS Ki-67 expression is predictive of prognosis, and our prognostic model may become a useful tool for predicting prognosis in patients with stage I/II extranodal NK/T-cell lymphoma, nasal type.
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Affiliation(s)
- S J Kim
- Department of Internal Medicine, Korea University Medical Center, Seoul, Korea
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Abstract
BACKGROUND Lipoma is a common soft-tissue tumour of mature fat cells. Although surgical excision is effective, treatments that are less invasive and not associated with disfigurement of scar would be ideal for the treatment of lipomas. Recently, tumescent liposuction has been used for the treatment of lipomas. OBJECTIVE To evaluate the efficacy of tumescent liposuction in lipoma treatment, we reviewed our experience of lipoma treatment by tumescent liposuction. METHODS A total of 21 patients presenting with 31 lipomas were treated with tumescent liposuction. After liposuction, remaining stromas were removed by a haemostat through the small incision. Tumour size and post-operative complications were recorded before and after treatment. RESULTS A total of 31 lipomas of 21 patients were treated by tumescent liposuction. The size of lipomas ranged between 1.2 and 11 cm (mean size, 4.1 cm). In 23 cases, there were no complications. However, remnant lipomas, bruise, haematoma and immediate dimpling were found as complications. CONCLUSION Tumescent liposuctions with extracting remnant fat tissue and fibrous tissue through the opening for liposuction can be an effective treatment technique in lipoma treatment in the efficacy and cosmetic outcomes and this method can be a substitute for excision in treating large lipomas.
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Affiliation(s)
- C W Choi
- Department of Dermatology, Seoul National University College of Medicine, Seoul and Seoul National University Bundang Hospital, Bundang-Gu, Seongnam, Gyeonggi, Korea
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Choi CW, Kim BJ, Park ES, Huh CH. Alopecia areata associated with basal cell carcinoma developing within a naevus sebaceus. Br J Dermatol 2006; 155:1090-1. [PMID: 17034557 DOI: 10.1111/j.1365-2133.2006.07485.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Choi BK, Koo JM, Ahn HJ, Yum HJ, Choi CW, Ryu KH, Chen P, Tolin SA. Emergence of Rsv-resistance breaking Soybean mosaic virus isolates from Korean soybean cultivars. Virus Res 2005; 112:42-51. [PMID: 15869819 DOI: 10.1016/j.virusres.2005.03.020] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2004] [Revised: 03/09/2005] [Accepted: 03/09/2005] [Indexed: 11/28/2022]
Abstract
Twelve Rsv resistance-breaking (RB) isolates of Soybean mosaic virus (SMV) were obtained from field-grown soybean plants showing mosaic symptoms and subsequently examined biologically and molecularly. All of these RB isolates were identified as SMV based on serological and infectivity assays, and the amplification of P1 gene products by reverse transcription-polymerase chain reaction (RT-PCR). Differential soybean cultivars, lines or accessions Lee 68 (rsv), PI 96983, York, Marshall, Ogden, Kwanggyo, Suweon 97 (Rsv1 alleles), L29 (Rsv3), and V94-5152 (Rsv4), following inoculation with each RB isolate, showed similar systemic symptoms suggesting that these RB isolates can overcome Rsv resistance at three loci. To differentiate the 12 RB isolates molecularly, the P1 coding region for each isolate was amplified, cloned, sequenced and compared to known SMV strains. The P1 region from the RB isolates shared 86-90% and 90-99% similarities in amino acid (aa) and nucleotide sequence, respectively, with known SMV strains. Comparison of aa sequences indicated that these RB isolates are newly emerging isolates capable of breaking Rsv resistance. Phylogenetic analysis further suggested that the RB isolates can be classified as three major types. However, recombination was not observed within the coding region of P1 protein among the types. This is the first report on the emergence of SMV isolates capable of overcoming all of the known resistance alleles at the Rsv1 locus, as well as distinct resistance genes at Rsv3 and Rsv4.
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Affiliation(s)
- B K Choi
- Department of Biology and Medicinal Science, Pai Chai University, Daejeon 302-735, Republic of Korea
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Oh SC, Park KH, Choi IK, Yoon SY, Kim SJ, Seo JH, Choi CW, Kim BS, Shin SW, Kim JS, Kim YH. Docetaxel (Taxotere), cisplatin, UFT, and leucovorin combination chemotherapy in advanced gastric cancer. Br J Cancer 2005; 92:827-31. [PMID: 15726097 PMCID: PMC2361894 DOI: 10.1038/sj.bjc.6602446] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
We conducted this study to ascertain the efficacy and toxicity of docetaxel and cisplatin combined with oral UFT and leucovorin as a first-line treatment for patients with advanced gastric cancer. In all, 52 patients received courses of docetaxel 60 mg m(-2) intravenously (i.v.) for 1 h and then cisplatin 75 mg m(-2) i.v. for 2 h on day 1. Oral UFT at 400-600 mg day(-1), as determined by body surface area, and leucovorin at 75 mg day(-1) were administered for 21 consecutive days from day 1, and this was followed by a 7-day drug-free interval. A total of 225 courses were administered, and the median number of courses per patient was four. Four complete responses (7.7%) and 22 partial responses (42.3%) were achieved, giving an overall response rate of 50% (95% Confidence Interval: 36.4-63.6%). The major toxicity was neutropenia, which reached grade 3/4 in 36 patients (69.3%). Grade 3/4 nausea and vomiting was observed in 12 patients (23.1%). Median time to progression was 22 weeks (4 to 156+ weeks), median survival duration was 48 weeks (4 to 156+ weeks), and median response duration was 24 weeks (6-152 weeks). We conclude that docetaxel, cisplatin, oral UFT, and leucovorin combination chemotherapy is effective and tolerable for the treatment of advanced gastric cancer.
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Affiliation(s)
- S C Oh
- Department of Internal Medicine, Division of Hematology/Oncology, Korea University Medical Center, Anam Hospital, 126-1, 5-Ga Anam-Dong, Sungbuk-Gu, Seoul 136-705, Korea
| | - K H Park
- Department of Internal Medicine, Division of Hematology/Oncology, Korea University Medical Center, Anam Hospital, 126-1, 5-Ga Anam-Dong, Sungbuk-Gu, Seoul 136-705, Korea
| | - I K Choi
- Department of Internal Medicine, Division of Hematology/Oncology, Korea University Medical Center, Anam Hospital, 126-1, 5-Ga Anam-Dong, Sungbuk-Gu, Seoul 136-705, Korea
| | - S Y Yoon
- Department of Internal Medicine, Division of Hematology/Oncology, Korea University Medical Center, Anam Hospital, 126-1, 5-Ga Anam-Dong, Sungbuk-Gu, Seoul 136-705, Korea
| | - S J Kim
- Department of Internal Medicine, Division of Hematology/Oncology, Korea University Medical Center, Anam Hospital, 126-1, 5-Ga Anam-Dong, Sungbuk-Gu, Seoul 136-705, Korea
| | - J H Seo
- Department of Internal Medicine, Division of Hematology/Oncology, Korea University Medical Center, Anam Hospital, 126-1, 5-Ga Anam-Dong, Sungbuk-Gu, Seoul 136-705, Korea
| | - C W Choi
- Department of Internal Medicine, Division of Hematology/Oncology, Korea University Medical Center, Anam Hospital, 126-1, 5-Ga Anam-Dong, Sungbuk-Gu, Seoul 136-705, Korea
| | - B S Kim
- Department of Internal Medicine, Division of Hematology/Oncology, Korea University Medical Center, Anam Hospital, 126-1, 5-Ga Anam-Dong, Sungbuk-Gu, Seoul 136-705, Korea
| | - S W Shin
- Department of Internal Medicine, Division of Hematology/Oncology, Korea University Medical Center, Anam Hospital, 126-1, 5-Ga Anam-Dong, Sungbuk-Gu, Seoul 136-705, Korea
| | - J S Kim
- Department of Internal Medicine, Division of Hematology/Oncology, Korea University Medical Center, Anam Hospital, 126-1, 5-Ga Anam-Dong, Sungbuk-Gu, Seoul 136-705, Korea
| | - Y H Kim
- Department of Internal Medicine, Division of Hematology/Oncology, Korea University Medical Center, Anam Hospital, 126-1, 5-Ga Anam-Dong, Sungbuk-Gu, Seoul 136-705, Korea
- Department of Internal Medicine, Division of Hematology/Oncology, Korea University Medical Center, Anam Hospital, 126-1, 5-Ga Anam-Dong, Sungbuk-Gu, Seoul 136-705, Korea. E-mail:
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Seo JH, Park SH, Bak CW, Choi CW, Kim BS, Shin SW, Kim YH, Kim JS, Mok YJ, Kim JS, Han SA, Yoon JI. Clinical Significance of Peripheral Blood CEA mRNA Expression in Gastric Cancer Patients Underwent Curative Resection. Cancer Res Treat 2001; 33:483-8. [PMID: 26680827 DOI: 10.4143/crt.2001.33.6.483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
PURPOSE Recent advances in molecular technology have made it possible to detect small numbers of circulating tumor cells in the peripheral blood or bone marrow. Carcinoembryonic antigen (CEA) is an oncofetal antigen that is expressed in epithelial tumor cells. CEA mRNA may be a reliable marker for the detection of tumor cells in the peripheral blood of patients with epithelial cancer. MATERIALS AND METHODS We analyzed the peripheral blood of 46 patients with gastric cancer who had undergone curative resection. The presence of CEA mRNA was serially monitored using RT-PCR (Preop, Post op 15 day, 2 months (m), 4 m, 6 m, 8 m, 10 m, 12 m). The clinical characteristics, serum CEA level and immunohistochemical staining of tumor tissue were also evaluated. Patients were followed up for 6 to 12 months. RESULTS There was no significant relationship seen between CEA mRNA RT-PCR positivity in the peripheral blood and sex, stage, serum CEA level or immunohistochemical staining for CEA antigen, During follow up,eight patients experienced recurrence; were positve for CEA mRNA RT-PCR recurrence was seen in 66.7% (6/9) of the patients who before clinical recurrence as compared to 5.4% (2/37) of patients who were negative (p=0.0002). Serial changes of CEA mRNA RT-PCR correlated with clinical recurrence; 100% in the positively converted group (3/3), 0% in the negatively converted group(0/18), 50% in all positive group (3/6) and 10.5% in all negative group (2/19) experienced recurrence, respectively. CONCLUSION RT-PCR analysis of CEA mRNA in the peripheral blood seems to be a promising tool for the early detection of micrometastatic circulating tumor cells in gastric cancer patients and may be useful in determining patients at high risk for recurrence. However, definitive correlation with recurrence certainly requires a longer follow up duration in further studies.
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Lee G, Cho KS, Chon S, Joung YH, Choi CW, Kim SY, Yoon HJ. A Case of Intracardiac Lymphoma as a Presentation of Non Hodgkin's Lymphoma. Cancer Res Treat 2001; 33:438-41. [PMID: 26680820 DOI: 10.4143/crt.2001.33.5.438] [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: 11/21/2022] Open
Abstract
Lymphomatous involvement of the heart is extremely rare at initial diagnosis and presentation of malignant lymphoma. Worldwide, only a few cases have been diagnosed and treated during life and only four cases were diagnosed before death in Korea. We report a case of non-Hodgkin's lymphoma with two right atrial masses detected by chest computed tomography and transesophageal echocardiography. The patient was an 80 year- old man and the presenting symptoms included generalized weakness, weight loss, constipation and low abdominal pain. For diagnosis, the mass of the perinephric area was biopsied under ultrasonographic guidance, and pathologically it was determined to be malignant lymphoma, diffuse large B cell type. The patient was treated with continuous low dose cyclophosphamide and prednisolone vice standard chemotherapy because of advanced age and renal dysfunction. After 2 months of treatment the masses in the atrium and the intraabdominal masses disappeared.
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Choi CW, Kim BS, Seo JH, Shin SW, Kim YH, Kim JS. Long-term engraftment stability of peripheral blood stem cells cryopreserved using the dump-freezing method in a -80 degrees C mechanical freezer with 10% dimethyl sulfoxide. Int J Hematol 2001; 73:245-50. [PMID: 11372739 DOI: 10.1007/bf02981945] [Citation(s) in RCA: 20] [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: 10/21/2022]
Abstract
In this study, we summarize our long-term follow-up data of 24 patients who underwent autologous peripheral blood stem cell transplantation (PBSCT) using the dump-freezing method in a -80 degrees C freezer. Collected peripheral blood mononuclear cells were mixed with a cryoprotectant solution consisting of autologous plasma and 20% dimethyl sulfoxide, then placed in a -80 degrees C freezer. The recovery rate of mononuclear cells (MNCs), colony-forming unit-granulocyte/macrophage (CFU-GM) colonies, and CD34+ cells were calculated. Engraftment time (with neutrophil count > 0.5 x 10(9)/L, platelet count > 50 x 10(9)/L) and normal hemopoiesis (neutrophil count > 2 x 10(9)/L, platelet count > 100 x 10(9)/L) were evaluated. Median duration of cryopreservation was 76 days. The mean recovery rates of MNCs, CFU-GM colonies, and CD34+ cells were 93.4%, 78.4%, and 95.3%, respectively. The median engraftment times of neutrophils and platelets were 8 and 27 days, respectively. The median normal hemopoiesis times of neutrophil and platelet were 31 and 45 days, respectively. Nine patients are alive and in complete remission (CR). Seven patients in first CR sustained normal hemopoiesis with a median duration of 35 months. Two patients, who achieved second CR after salvage chemotherapy due to a leukemia relapse after PBSCT, maintained engraftment status for 24 and 28 months, and 1 reached normal hemopoiesis. These results demonstrate that PBSCT using the dump-freezing method in a -80 degrees C freezer leads to acceptable long-term engraftment stability.
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Affiliation(s)
- C W Choi
- Department of Internal Medicine, Korea University Medical Center, Seoul
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Han DH, Kwon OK, Byun BJ, Choi BY, Choi CW, Choi JU, Choi SG, Doh JO, Han JW, Jung S, Kang SD, Kim DJ, Kim HI, Kim HD, Kim MC, Kim SC, Kim SC, Kim Y, Kwun BD, Lee BG, Lim YJ, Moon JG, Park HS, Shin MS, Song JH, Suk JS, Yim MB. A co-operative study: clinical characteristics of 334 Korean patients with moyamoya disease treated at neurosurgical institutes (1976-1994). The Korean Society for Cerebrovascular Disease. Acta Neurochir (Wien) 2001; 142:1263-73; discussion 1273-4. [PMID: 11201642 DOI: 10.1007/s007010070024] [Citation(s) in RCA: 122] [Impact Index Per Article: 5.3] [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: 10/27/2022]
Abstract
A co-operative study was conducted to determine the clinical characteristics of patients with moyamoya disease who were diagnosed and treated at neurosurgical institutes in Korea before 1995. Twenty-six hospitals contributed 505 cases and among them, the clinical characteristics of 334 patients with definite moyamoya disease were evaluated. The number of patients began to increase from the late 1980s, and after that approximately 20 patients were treated each year. There were two age peaks: from six to 15 and from 31 to 40 years of age. Haemorrhagic manifestations occurred in approximately 43% of the patients. The major clinical manifestations were haemorrhage in adults (62.4%) and ischaemia in children (61.2%). Overall 54.5% of the patients experienced decreased consciousness levels, mainly due to intracranial haemorrhage or cerebral infarction. In the patients with ischemic manifestations, the adult patients were more likely to have cerebral infarction than the pediatric patients (80% vs. 39%) and the pediatric patients were more likely to have TIA (61% vs. 25%). Thirty eight percent of the patients underwent bypass surgery and 53% of these procedures were performed bilaterally. Treatment policies, including indications for bypass surgery and commonly used drugs, were somewhat different according to the institution. Overall favorable outcome was 73%, and the most significant factor affecting poor outcome was haemorrhagic manifestation. This article describes the characteristics of 334 patients with moyamoya disease, who were diagnosed and treated at neurosurgical institutes in Korea before 1995.
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Affiliation(s)
- D H Han
- Department of Neurosurgery, Seoul National University Hospital, Chongno-gu, Korea
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Oh SJ, Moon DH, Ha HJ, Park SW, Hong MK, Park SJ, Choi TH, Lim SM, Choi CW, Knapp FF, Lee HK. Automation of the synthesis of highly concentrated 188Re-MAG3 for intracoronary radiation therapy. Appl Radiat Isot 2001; 54:419-27. [PMID: 11214876 DOI: 10.1016/s0969-8043(00)00279-7] [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] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
We have developed an efficient method and an automated synthetic system for the preparation of highly concentrated 188Re-MAG3. Routine production of 188Re-MAG3 for use in intracoronary radiation therapy was performed by compressed air driven semi-automated shielded system. 188Re-MAG3 was prepared with a commercial kit and reducing agents, purified and concentrated by C18 Sep-Pak cartridges to desired radioactivity and volume. Using this automated system, reproducible radiolabeling yields of 80-85% were obtained.
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Affiliation(s)
- S J Oh
- Department of Nuclear Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea.
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Choi CW, Kim BS, Seo JH, Shin SW, Kim YH, Kim JS, Sohn SK, Kim JS, Shin DG, Ryoo HM, Lee KH, Lee JJ, Chung IJ, Kim HJ, Kwak JY, Yim CY, Ahn JS, Lee JA, Park YS. Response to high-dose intravenous immune globulin as a valuable factor predicting the effect of splenectomy in chronic idiopathic thrombocytopenic purpura patients. Am J Hematol 2001; 66:197-202. [PMID: 11279626 DOI: 10.1002/1096-8652(200103)66:3<197::aid-ajh1044>3.0.co;2-6] [Citation(s) in RCA: 24] [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
This study was conducted to verify whether the response to high-dose intravenous immune globulin (IVIG) was related to the effect of splenectomy in chronic idiopathic thrombocytopenic purpura (ITP) patients. A total of 79 patients over 16 years of age were enrolled in this study. The response to the treatment was classified on the basis of the platelet count as no response (NR, <50 x 10(9)/l), incomplete response (IR, (50-150) x 10(9)/l), and complete response (CR, >150 x 10(9)/l). The response was evaluated after the infusion of high-dose IVIG, within 2 weeks after splenectomy (immediate response), and during a follow-up period of more than 6 months after splenectomy (sustained response), respectively. 58 patients (73.4%) showed responses (CR or IR) to high-dose IVIG. After splenectomy, immediate responses were observed in 73 patients (92%). The response to high-dose IVIG had no relationship with the immediate response to splenectomy (P = 0.333). A follow-up evaluation was possible with 58 patients; 6 patients with NR in immediate responses did not show any response during the follow-up period, and 17 patients relapsed within 6 months after immediate responses, so 35 patients (60.3%) had sustained responses. Responders to IVIG had significantly higher sustained response rates to splenectomy than non-responders (62% vs. 38%, P = 0.001). These results indicate that the response to high-dose IVIG could be a valuable factor predicting the sustained response to splenectomy in chronic ITP patients.
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Affiliation(s)
- C W Choi
- Department of Internal Medicine, Korea University Medical Center, Seoul, Korea
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Choi CW, Choi IK, Seo JH, Kim BS, Kim JS, Kim CD, Um SH, Kim JS, Kim YH. Effects of 5-fluorouracil and leucovorin in the treatment of pancreatic-biliary tract adenocarcinomas. Am J Clin Oncol 2000; 23:425-8. [PMID: 10955877 DOI: 10.1097/00000421-200008000-00023] [Citation(s) in RCA: 93] [Impact Index Per Article: 3.9] [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: 01/03/2023]
Abstract
Adenocarcinomas of the pancreas and biliary tract are highly malignant neoplasms, which are found in the advanced stage. Chemotherapy commonly plays a palliative role in the treatment of pancreatic and biliary tract cancers. 5-Fluorouracil (5-FU) is the most widely studied single agent; the response rate of 5-FU is only 20%. Recently, some reports presented interesting results, in which 5-FU, modulated with levofolinic acid (leucovorin), was active in patients with colorectal cancer. In relation, we performed a phase II study of 5-FU, modulated with leucovorin, in patients affected by advanced pancreatic or biliary tract cancer. Fifty-one patients with nonresectable carcinomas of the pancreas or biliary tract admitted to Korea University Hospital between May 1995 and December 1998 were included in this study. Chemotherapy consisted of leucovorin 25 mg/m2/day by 2-hour intravenous infusion, followed by 5-FU 375 mg/m2/day by bolus intravenous infusion, from day I to day 5. The treatment was repeated every 3 to 4 weeks. A total of 51 eligible patients with advanced adenocarcinoma of the pancreas or biliary tract were enrolled. Of 23 enrolled patients with pancreatic adenocarcinoma, one patient showed complete remission with a survival duration of 13 months (response duration was 9 months). Three patients had partial responses (PRs) with survival times of 6, 12, and 15 months, respectively. The overall response rate was 17.4% (95% confidence interval [CI], 7.2%-36.2%). The median time of overall survival was 6 months (range: 1-15 months). Of 28 enrolled patients with biliary tract cancer, complete responses were observed in 2 patients (7.1%) with survival time of 14 and 16 months, respectively. Seven patients had PRs with a median survival of 8 months. The overall response rate was 32.1% (95% CI, 20.3%-57.5%). The median time of overall survival was 6 months (range: 1-16 months). The most prominent toxicity was mucositis. Hematologic toxicity was less severe. 5-Fluorouracil in modulation with intravenous leucovorin is well tolerated by patients with stage IV pancreatic adenocarcinoma or biliary tract cancer. Although the response rate for patients with pancreatic adenocarcinoma is not better than that achieved using 5-FU monochemotherapy, the 32.1% overall response rate achieved in patients with biliary tract cancer suggests that 5-FU modulation with leucovorin is active in biliary tract cancer.
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Affiliation(s)
- C W Choi
- Department of Internal Medicine, Korea University, School of Medicine, Seoul
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Kim BS, Kook H, Hwang TJ, Choi CW, Kim CJ, Kim JS. Autologous peripheral blood stem cell transplantation using G-CSF combined conditioning in AML patients: delayed platelet recovery and frequency early relapse. Bone Marrow Transplant 2000; 26:459-60. [PMID: 10982296 DOI: 10.1038/sj.bmt.1702513] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Choi CW, Park SH, Choi JK, Ryu KH, Park WM. Chemical degradation of tobacco mosaic virus followed by infectivity assay, reverse transcription-polymerase chain reaction and gel electrophoresis. Acta Virol 2000; 44:145-9. [PMID: 11155356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
In order to determine the detection limit for chemically treated virions by gel electrophoresis, reverse transcription-polymerase chain reaction (RT-PCR) and infectivity assay, tobacco mosaic virus (TMV) exposed to various concentrations of chemicals was studied. When virions were exposed to 0.2 N HCl for 30 mins, partially degraded TMV particles were observed by gel electrophoresis. Under the same exposure, a major RT-PCR amplified DNA product corresponding to the target size of 806 bp, which decreased as a function of time, could be detected for up to 60 mins of exposure. When virions were treated with NaOH (0.02 N or higher normality) for 5 mins, partially degraded virions were detected by gel electrophoresis, exhibiting multiple band patterns. Exposure of the virions to 0.1 N NaOH for 5 mins revealed severely degraded viral RNA, but disappearance of the amplified RT-PCR products was apparent during 30-60 mins of exposure. Therefore, these data showed clearly the difference in the detection limit of gel electrophoresis and that of RT-PCR for the degraded viral RNA. In addition, the infectivity assay showed that the number of local lesions in Nicotiana rustica were significantly reduced by more than 95% when the virus was exposed to 0.2 N HCl for 15 mins or 0.1 N NaOH for 10 mins. From these results we conclude that loss of infectivity was not related to that of PCR product. Other chemical disinfectants such as phenol or formalin were also found to be effective to reduce the virus infectivity, but a corresponding degradation of viral RNA was detected by neither gel electrophoresis nor RT-PCR.
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Affiliation(s)
- C W Choi
- Department of Biology, Pai Chai University, Taejon 302-735, South Korea.
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Abstract
OBJECTIVE To determine the accuracy of CT and positron emission tomography (PET) in the diagnosis of recurrent uterine cervical cancer. MATERIALS AND METHODS Imaging findings of CT and PET in 36 patients (mean age, 53 years) in whom recurrent uterine cervical cancer was suspected were analyzed retrospectively. Between October 1997 and May 1998, they had undergone surgery and/or radiation therapy. Tumor recurrence was confirmed by pathologic examination or follow-up studies. RESULTS In detecting recurrent uterine cervical cancer, the sensitivity, specificity, and accuracy of CT were 77.8%, 83.3%, and 80.5%, respectively, while for PET, the corresponding figures were 100%, 94.4%, and 97.2%. The Chi-square test revealed no significant difference in specificity (p =.2888), but significant differences in sensitivity (p =.0339) and accuracy (p =.0244). CONCLUSION PET proved to be a reliable screening method for detecting recurrent uterine cervical cancer, but to determine the anatomical localization of recurrent tumors, and thus decide an adequate treatment plan, CT was eventually needed.
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Affiliation(s)
- D H Park
- Department of Diagnostic Radiology, Korea Cancer Center Hospital, Seoul, Korea
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Kim YH, Kim BS, Seo JH, Choi CW, Kim JS, Chun HJ, Hyun JH, Kim JS. Epirubicin, cisplatin, oral UFT, and calcium folinate in advanced gastric carcinoma. Oncology (Williston Park) 1999; 13:64-8. [PMID: 10442365] [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: 02/13/2023]
Abstract
UFT (uracil and tegafur in a 4:1 molar ratio) plus calcium folinate treatment has favorable activity and tolerable toxicity in patients with advanced gastric carcinoma. High response rates have been reported in patients with advanced gastric carcinoma receiving a schedule of epirubicin, cisplatin (Platinol), and protracted infusion of 5-fluorouracil (5-FU). Replacing the inconvenient infusion pump and intravenous catheter needed for protracted infusion of 5-FU, we administered oral UFT plus calcium folinate (Orzel) to 37 patients (median age, 55 years; median World Health Organization [WHO] performance status of 1) with locally advanced or metastatic gastric carcinoma. Epirubicin 50 mg/m2 and cisplatin 60 mg/m2 were administered by intravenous injection on day 1; UFT 360 mg/m2/day po was administered in conjunction with oral calcium folinate 25 mg/m2/day in divided daily doses for 21 days, followed by a 7-day rest period. Courses were repeated every 4 weeks. Among 37 evaluable patients who received a median of four courses of treatment (range, 2 to 10), two achieved a complete response and 18 a partial response, for an overall response rate of 54% (95% confidence interval, 39% to 70%). Stable disease was reported in 12 patients (32.4%) and disease progression in another five (13.5%). The median duration of survival was 10 months (range, 2 to 15+). The main toxicities were nausea/vomiting, leukopenia, diarrhea, and oral mucositis. WHO grade 3 or 4 toxicity included leukopenia in 14 patients (37.8%), nausea/vomiting in 11 (29.7%), oral mucositis in five (13.5%), and diarrhea in four (10.8%). Epirubicin, cisplatin, and oral UFT plus calcium folinate, a convenient outpatient regimen, has significant activity and tolerable toxicities in patients with gastric carcinoma.
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Affiliation(s)
- Y H Kim
- Section of Hemato-Oncology, College of Medicine, Korea University, Seoul, Korea
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Chung JK, So Y, Lee JS, Choi CW, Lim SM, Lee DS, Hong SW, Youn YK, Lee MC, Cho BY. Value of FDG PET in papillary thyroid carcinoma with negative 131I whole-body scan. J Nucl Med 1999; 40:986-92. [PMID: 10452315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023] Open
Abstract
UNLABELLED The management of metastatic thyroid carcinoma patients with a negative 131I scan presents considerable problems. Fifty-four athyrotic papillary thyroid carcinoma patients whose 1311 whole-body scans were negative underwent 18F-fluorodeoxyglucose (FDG) PET; the purpose was to determine whether this procedure could localize metastatic sites. We also assessed its usefulness in the management of these patients. METHODS Whole-body emission scan was performed 60 min after the injection of 370-555 MBq 18F-FDG, and additional regional attenuation-corrected scans were obtained. Metastasis was pathologically confirmed in 12 patients and was confirmed in other patients by overall clinical evaluation of the findings of other imaging studies and of the subsequent clinical course. RESULTS In 33 patients, tumor had metastasized, whereas 21 patients were in remission. FDG PET revealed metastases in 31 patients (sensitivity 93.9%), whereas thyroglobulin levels were elevated in 18 patients (sensitivity 54.5%). FDG PET was positive in 14 of 15 metastatic cancer patients with normal thyroglobulin levels. In 20 of 21 patients in remission, FDG PET was negative (specificity 95.2%), whereas thyroglobulin levels were normal in 16 patients (specificity 76.1%). The sensitivity and specificity of FDG PET were significantly higher than those of serum thyroglobulin. In patients with negative 1311 scans, FDG PET detected cervical lymph node metastasis in 87.9%, lung metastasis in 27.3%, mediastinal metastasis in 33.3% and bone metastasis in 9.1%. In contrast, among 117 patients with 131I scan-positive functional metastases, 131I scan detected cervical lymph node metastasis in 61.5%, lung metastasis in 56.4%, mediastinal metastasis in 22.2% and bone metastasis in 16.2%. In all 5 patients in whom thyroglobulin was false-negative with negative antithyroglobulin antibody, PET showed increased 18F-FDG uptake in cervical lymph nodes, mediastinal lymph nodes, or both. Among patients with increased 18F-FDG uptake only in the cervical lymph nodes, the nodes were dissected in 11. Metastasis was confirmed in all, even in normal-sized lymph nodes. CONCLUSION FDG PET scan localized metastatic sites in 131I scan-negative thyroid carcinoma patients with high accuracy. In particular, it was superior to 131I whole-body scan and serum thyroglobulin measurement for detecting metastases to cervical lymph nodes. FDG PET was helpful for determining the surgical management of these patients.
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Affiliation(s)
- J K Chung
- Department of Nuclear Medicine, Seoul National University College of Medicine, Korea Cancer Center Hospital
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Abstract
99mTc complex of hexamethylpropylene amine oxime (99mTc-HMPAO), which has been used as a tracer for regional cerebral blood flow (rCBF), has been shown to localize in primary brain tumors with wide spectrum of its uptake. The causes of the wide spectrum of tumor uptake, however, has not been understood in detail. We performed autoradiographic study with this agent to get further knowledge about HMPAO distribution in 10 cases of transplanted rat gliomas. Eight cases of rat gliomas without tumor necrosis, showed decreased uptake of 99mTc-HMPAO in the autoradiography (average tumor/normal (T/N) uptake ratio: 0.75, range: 0.40-0.90). On the other hand, two cases with tumor necrosis revealed increased uptakes of this agent in central necrotic area. T/N uptake ratios of these two cases were 1.23 and 1.42, respectively. In addition, three patients with histologically proven glioblastoma with tumor necrosis were studied after administration of 20mCi 99mTc-HMPAO. Two out of three patients showed higher uptake of 99mTc-HMPAO in tumor necrotic area than the contralateral area. Our findings suggest that the necrotic area of brain tumor may retain 99mTc-HMPAO and causes an increased uptake.
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Affiliation(s)
- S H Lee
- Department of Neurosurgery, Korea Cancer Center Hospital, Seoul
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Kim JS, Choi CW, Kim BS, Shin SW, Kim YH, Mok YJ, Kim JS, Koo BH. Amplification of c-erbB-2 proto-oncogene in cancer foci, adjacent normal, metastatic and normal tissues of human primary gastric adenocarcinomas. J Korean Med Sci 1997; 12:311-5. [PMID: 9288630 PMCID: PMC3054209 DOI: 10.3346/jkms.1997.12.4.311] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Genetic damages are frequently found in both tumor and normal cells at carcinogen exposed areas in the patients with upper aerodigestive tract cancer. These phenomena are explained by the multistage process and/or field cancerization theories. The c-erbB-2 proto-oncogene has been amplified in many human tumors including breast, stomach, kidney and lung cancers. To study the possible evidence of multistage process and/or field cancerization in the development of gastric adenocarcinoma, the amplification statuses of c-erbB-2 proto-oncogene using the Southern hybridization technique were evaluated at the 45 gastric adenocarcinoma specimen sets consisting of tumor tissue, adjacent normal tissue (within 2 cm of the primary tumor), metastatic tissue and normal stomach tissue (at least 5 cm away from primary tumor). As a result, c-erbB-2 proto-oncogene at 2 specimen sets (4.4%) was amplified 2- to 4-fold to normal control status. In these 2 cases, c-erbB-2 proto-oncogene at histologically normal tissue adjacent to tumor tissue was amplified. And, the metastatic tissue of 1 case also exhibited c-erbB-2 proto-oncogene amplification of which the degree was less than that of tumor tissue. From these results, we were able to suspect that c-erbB-2 proto-oncogene amplification in the normal tissue adjacent to tumor tissue could be a biomarker of premalignant changes in a small proportion of gastric adenocarcinoma patients. And, this result might suggest the possible role of multistage process and/or field cancerization in the development of gastric adenocarcinoma.
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Affiliation(s)
- J S Kim
- Department of Internal Medicine and General Surgery, School of Medicine, Korea University, Seoul, Korea
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