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Cai JH, Chuang CC, Chen MH, Yeh CP, Hsu CY. Differences of bioelectrical impedance in the development and healing phase of pressure ulcers and erythema in mouse model. J Tissue Viability 2024:S0965-206X(24)00025-1. [PMID: 38431432 DOI: 10.1016/j.jtv.2024.02.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 01/26/2024] [Accepted: 02/24/2024] [Indexed: 03/05/2024]
Abstract
Pressure ulcers (PUs) are economically burdensome medical conditions. Early changes in pressure ulcers are associated with erythema. In this study, bioelectrical impedance was used to measure the differences between PUs and blanchable erythema. We divided 21 ICR mice into three groups: control, 1000 mmHg-1h, and 1000 mmHg-6h. Healthy skin, blanchable erythema, and PUs were induced on the dorsal skin. The results indicated an immediate increase in impedance, resistance, and reactance values in the pressure group after release, followed by a subsequent decrease until two days after release. Compared with the control group, impedance and reactance significantly increased by 30.9% (p < 0.05) and 30.1% (p < 0.01), respectively, in the 6 h-loading group immediately after release. One and two days after release, the 1 h-loading and 6 h-loading groups exhibited significantly different degrees of decline. One day after release, impedance and resistance decreased by 30.2% (p < 0.05) and 19.8% (p < 0.05), respectively, in the 1 h-loading group; while impedance, resistance, and reactance decreased by 39.2% (p < 0.01), 26.8% (p < 0.01), and 45.7% (p < 0.05), respectively, in the 6 h-loading group. Two days after release, in the 1 h-loading group, impedance and resistance decreased by 28.3% (p < 0.05) and 21.7% (p < 0.05), respectively; while in the 6 h-loading group, impedance, resistance, and reactance decreased by 49.8% (p < 0.001), 34.2% (p < 0.001), and 59.8% (p < 0.01), respectively. One and two days after release the pressure group reductions were significantly greater than those in the control group. Additionally, we monitored changes during wound healing. Distinguishing early PUs from blanchable erythema by noninvasive bioelectrical impedance technology may have applications value in early assessment of PUs.
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Affiliation(s)
- J H Cai
- Department of Biomedical Engineering, Chung Yuan Christian University, Chung Pei Road, Chung Li District, Taoyuan City, Taiwan.
| | - C C Chuang
- Department of Biomedical Engineering, Chung Yuan Christian University, Chung Pei Road, Chung Li District, Taoyuan City, Taiwan.
| | - M H Chen
- Department of Biomedical Engineering, Chung Yuan Christian University, Chung Pei Road, Chung Li District, Taoyuan City, Taiwan.
| | - C P Yeh
- Department of Biomedical Engineering, Chung Yuan Christian University, Chung Pei Road, Chung Li District, Taoyuan City, Taiwan.
| | - C Y Hsu
- Department of Physical Medicine and Rehabilitation, Ten-Chan General Hospital, Yanping Road, Chung Li District, Taoyuan City, Taiwan.
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Li TH, Su CF, Lai CC, Chang YF, Wu FY, Chang YS, Chuang CC, Tsai CY. Epidemiology and risk factors for cytomegalovirus disease in autoimmune inflammatory rheumatic diseases: A nationwide population-based study in Taiwan. Int J Rheum Dis 2024; 27:e15067. [PMID: 38402435 DOI: 10.1111/1756-185x.15067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Revised: 01/13/2024] [Accepted: 01/22/2024] [Indexed: 02/26/2024]
Affiliation(s)
- Tzu-Hao Li
- Division of Allergy, Immunology, and Rheumatology, Department of Internal Medicine, Shin Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan
- Institute of Clinical Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Faculty of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
- School of Medicine, Fu Jen Catholic University, New Taipei City, Taiwan
| | - Chin-Fang Su
- Division of Allergy, Immunology, and Rheumatology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
- Division of Allergy, Immunology and Rheumatology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Chien-Chih Lai
- Institute of Clinical Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Faculty of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Division of Allergy, Immunology, and Rheumatology, Department of Internal Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Yu-Fan Chang
- Institute of Clinical Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Faculty of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Department of Ophthalmology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Fang-Yi Wu
- Department of Data Science, College of Arts and Sciences, American University, Washington, DC, USA
| | - Yu-Sheng Chang
- Division of Allergy, Immunology, and Rheumatology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
- Division of Allergy, Immunology and Rheumatology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Chih-Cheng Chuang
- Division of Allergy, Immunology, and Rheumatology, Department of Internal Medicine, Shin Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan
- School of Medicine, Fu Jen Catholic University, New Taipei City, Taiwan
| | - Chang-Youh Tsai
- Faculty of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
- School of Medicine, Fu Jen Catholic University, New Taipei City, Taiwan
- Division of Allergy, Immunology & Rheumatology, Fu Jen Catholic University Hospital, New Taipei City, Taiwan
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Augustin M, Misery L, Kobyletzski LV, Mealing S, Redding M, Chuang CC, Massey R, Cawkwell M, Bego Le-Bagousse G, Haddy L, Rout R. Systematic literature review assessing the overall costs and societal impacts of moderate-to-severe atopic dermatitis in Europe. J Eur Acad Dermatol Venereol 2022; 36:2316-2324. [PMID: 35920758 DOI: 10.1111/jdv.18481] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Accepted: 07/11/2022] [Indexed: 11/29/2022]
Abstract
Atopic dermatitis (AD) is a chronic inflammatory disease, driven by type 2 inflammation. The condition manifests as moderate-to-severe disease in approximately 20% of adults with AD across Europe, and is associated with a substantial burden on patients, society, and healthcare systems. However, systematic assessments capturing the totality of disease burden associated with moderate-to-severe AD are limited; therefore, the overall impacts of the disease may be underestimated. A systematic literature review was carried out to assess the overall costs of moderate-to-severe AD across Europe, including the financial, societal, and humanistic impacts. PubMed, Embase and Cochrane databases were searched to identify relevant studies published between 1 January 2010 and 2 June 2020. Scientific conference proceedings, health technology assessment websites and patient association group websites were also searched for relevant information. Twenty-seven publications, corresponding to 22 unique studies, were included in the analysis. Total costs (direct and productivity losses) reached €20 695 per-person-per-year (PPPY) for adults with uncontrolled symptoms of moderate-to-severe AD. Direct medical costs ranged between €307 and €6993 PPPY; prescription medications and specialist dermatologist visits were the main contributors. Costs increased with disease severity or with uncontrolled disease. Patients with AD also incurred personal costs of €927 per year for healthcare items not reimbursed, which increased by 9% for those with moderate-to-severe forms. Annual work productivity losses comprised most of the total costs reported for adults with moderate-to-severe AD (up to 60.8% of the total burden) and were highest in those with uncontrolled disease (€13 702 PPPY). Patients with moderate-to-severe disease also experienced physical, emotional, and social impacts. The overall costs of moderate-to-severe AD greatly impact on healthcare systems, patients, and society. Sustained control of moderate-to-severe AD, through effective treatment and care management, is essential to limit the burden caused by the disease.
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Affiliation(s)
- M Augustin
- University Medical Center Hamburg, Hamburg, Germany
| | - L Misery
- University Hospital of Brest, Brest, France
| | | | - S Mealing
- York Health Economics Consortium (YHEC), York, UK
| | - M Redding
- Eczema Outreach Support, Linlithgow, Scotland
| | | | | | | | | | - L Haddy
- Aixial on behalf of Sanofi, Chilly-Mazarin, France
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Abstract
In clinical dentistry practice, supplemental bone surgery or jawbone defect after tooth extraction must be assisted by a bone-filling material. Cobalt-substituted hydroxyapatite (COHA) effectively promotes bone cell growth, reduces the inflammatory response, and is an antibacterial agent. COHA can therefore be used as an alveolar bone-filling material or guided bone regeneration membrane. Meanwhile, COHA can be used in magnetic resonance imaging (MRI) with negative contrast agents and targeting materials without causing metal interference with the image. Hence, COHA has received increasing amounts of attention in recent years. However, the influence of different cobalt precursors on the synthesized COHA is still unknown. Therefore, COHA synthesized from 3 cobalt precursors (cobalt chloride, cobalt nitrate, and cobalt sulfate) was compared in this study. The results show that COHA synthesized by the precursor with the smallest anion radius, cobalt chloride, has a larger particle size (239 nm) and a higher cobalt ion substitution rate (15.6%). When the cobalt ion substitution rate increases, the MRI has a stronger contrast. Bioactivity data indicate that COHAC is more susceptible to degradation and therefore releases more cobalt ions to contribute to the differentiation of bone cells. Based on these studies, COHAC prepared with the cobalt chloride precursor has a higher cobalt ion substitution rate, faster degradation rate, better image contrast, and better bioactivity. It is therefore the preferred choice of bone-filling material for alveolar bone regeneration.
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Affiliation(s)
- W C Lin
- Graduate Institute of Oral Science, Chung Shan Medical University, Taichung, Taiwan.,School of Dental Technology, College of Oral Medicine, Taipei Medical University, Taipei, Taiwan
| | - C C Chuang
- Department of Medical Imaging and Radiological Sciences, Chung Shan Medical University, Taichung, Taiwan.,Department of Medical Image, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - C Yao
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory for Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - C M Tang
- Graduate Institute of Oral Science, Chung Shan Medical University, Taichung, Taiwan.,Department of Dentistry, Chung Shan Medical University Hospital, Taichung, Taiwan
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Lin TK, Yeh TH, Hsu PW, Chuang CC, Tu PH, Chen PY, Jung SM, Wei KC, Huang YC. Primary Central Nervous System Lymphomas of the Brain: A Retrospective Analysis in a Single Institution. World Neurosurg 2017; 103:550-556. [DOI: 10.1016/j.wneu.2017.03.095] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Revised: 03/17/2017] [Accepted: 03/20/2017] [Indexed: 10/19/2022]
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Chuang CC, Dinet J, Bhurke S, Chen SY, Gabriel S. What are the Health Care Resource Utilization and Medical Cost of Untreated Patients with Neuroendocrine Tumors in the United States? Value Health 2014; 17:A656-A657. [PMID: 27202376 DOI: 10.1016/j.jval.2014.08.2398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
| | - J Dinet
- IPSEN Pharma, Boulogne-Billancourt, France
| | | | | | - S Gabriel
- IPSEN Pharma, Boulogne Billancourt, France
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Abstract
AIM To evaluate aerobic capacity in patients with ankylosing spondylitis (AS) and determine possible relationships between aerobic capacity, pulmonary function, and disease-related variables. METHOD Forty-two patients with AS and 42 healthy controls were recruited in the study. Descriptive data, disease-related variables (grip strength, lumbosacral mobility, occiput-to-wall distance, chest expansion, finger-to-floor distance, Bath Ankylosing Spondylitis Disease Activity Index, Bath Ankylosing Spondylitis Functional Index (BASFI), Bath Ankylosing Spondylitis Global Score, erythrocyte sedimentation rate (ESR), C-reactive protein (CRP) and hemoglobin), and chest and thoracic spine x-rays were collected in each patient with AS. All subjects took standard pulmonary function and exercise tolerance tests, and forced vital capacity (FVC) and aerobic capacity were recorded. RESULTS Both aerobic capacity and FVC in patients with AS were significantly lower than those in normal subjects (P < 0.05). AS patients with BASFI scores of < 3 or BASDI scores of < 4 had a higher aerobic capacity. There was significant correlation between aerobic capacity, vital capacity, chest expansion, Schober's test, cervical range of motion, and BASFI in patients with AS. Neither aerobic capacity nor vital capacity correlated with disease duration, ESR, CRP, and hemoglobin. CONCLUSIONS Significantly reduced aerobic capacity and FVC were observed in patients with AS, and there was significant correlation between aerobic capacity, vital capacity, chest expansion, and BASFI.
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Affiliation(s)
- Lin-Fen Hsieh
- Department of Physical Medicine and Rehabilitation, Shin Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan.,School of Medicine, Fu Jen Catholic University, New Taipei City, Taiwan
| | - James Cheng-Chung Wei
- Division of Allergy, Immunology and Rheumatology, Chung Shan Medical University Hospital, Taichung, Taiwan.,Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan.,Graduated Institute of Integrated Medicine, China Medical University, Taichung, Taiwan
| | - Hsin-Yi Lee
- Institute of Occupational Medicine and Industrial Hygiene, College of Public Health, National Taiwan University, Taipei, Taiwan
| | - Chih-Cheng Chuang
- School of Medicine, Fu Jen Catholic University, New Taipei City, Taiwan.,Department of Allergy, Immunology, and Rheumatology, Shin Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan
| | - Jiunn-Song Jiang
- School of Medicine, Fu Jen Catholic University, New Taipei City, Taiwan.,Department of Chest Medicine, Shin Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan
| | - Kae-Chwen Chang
- Department of Physical Medicine and Rehabilitation, Shin Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan
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Chuang CC, Chen CW, Huang YT, Du WY. Anti-ST2 monoclonal antibody inhibits eosinophil infiltration in Angiostrongylus cantonensis-infected mice. J Microbiol Immunol Infect 2014; 49:91-6. [PMID: 24657070 DOI: 10.1016/j.jmii.2014.01.009] [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] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Revised: 01/22/2014] [Accepted: 01/22/2014] [Indexed: 11/29/2022]
Abstract
BACKGROUND/PURPOSE Interleukin-33 (IL-33) could play an important role in the pathogenesis of angiostrongylosis. However, the role of IL-33/ST2 pathway in this parasitic infection is uncertain. METHODS C57BL/six mice were each infected with 35 Angiostrongylus cantonensis larvae. One group of mice received an intraperitoneal injection of anti-ST2 monoclonal antibody (mAb; 50 μg) 3 days postinfection and subsequent booster shots of the same dose at 5-day intervals. Blood samples from each group were collected every week for assays. RESULTS The level of IL-5 significantly decreased in the mAb-treated group, and the infiltration of eosinophils in the meninges was also significantly reduced. CONCLUSION The IL-33/ST2 axis may play a crucial role in the pathogenesis of angiostrongylosis and the results of this study could be useful for the development of strategies to reduce the neurological damage caused by this parasitic infection.
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Affiliation(s)
- Chih-Cheng Chuang
- School of Medicine, Fu Jen Catholic University, Xinzhuang, New Taipei City, Taiwan; Section of Allergy, Immunology and Rheumatology, Department of Internal Medicine, Shin Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan
| | - Chi-Wu Chen
- Department of Cosmetic Science, Vanung University, Zhongli City, Taoyuan, Taiwan
| | - Yu-Tzu Huang
- School of Medicine, Fu Jen Catholic University, Xinzhuang, New Taipei City, Taiwan
| | - Wen-Yuan Du
- School of Medicine, Fu Jen Catholic University, Xinzhuang, New Taipei City, Taiwan.
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Du WY, Chen CW, Lin FK, Chuang CC. IL-33 mediates the expressions of IL-5 and IL-13 in Angiostrongylus cantonensis-infected mice. Exp Parasitol 2013; 135:587-94. [PMID: 24076431 DOI: 10.1016/j.exppara.2013.09.012] [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] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Revised: 08/16/2013] [Accepted: 09/06/2013] [Indexed: 11/19/2022]
Abstract
Angiostrongylus cantonensis is the major cause of human eosinophilic meningoencephalitis. C57BL/6 mice were experimentally infected with 35 infectious larvae. Two groups of infected mice received intraperitoneal injections of mouse IL-33 (1μg) or anti-IL-33 monoclonal antibody (mAb) (10μg) 3days post infection (dpi) and subsequent booster shots of the same dose at 5day intervals. Blood samples from each group were collected weekly for assays. IgE levels were significantly increased in all infected mice. The eosinophil percentage and levels of IL-5 and IL-13 significantly increased in the IL-33-treated group relative to infected but non-treated animals. The level of IL-5 decreased in the mAb-treated group. The severity of eosinophilic meningitis was exacerbated in the IL-33 injected group. Taken together, these results suggest that IL-33 mediates the expressions of IL-5 and IL-13, and plays a crucial role in the pathogenesis of angiostrongylosis.
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Affiliation(s)
- Wen-Yuan Du
- School of Medicine, Fu Jen Catholic University, Taiwan
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Chuang CC, Chen CW, Su KE, Tsai YT, Du WY. A RAB family antigen of Angiostrongylus cantonensis induces a Th1-type immune response in vitro and in vivo. Exp Parasitol 2013; 134:122-7. [PMID: 23458235 DOI: 10.1016/j.exppara.2013.02.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2012] [Revised: 01/07/2013] [Accepted: 02/19/2013] [Indexed: 10/27/2022]
Abstract
A cDNA library was constructed from an Angiostrongylus cantonensis young adult and the encoded proteins were expressed in Escherichia coli. One reactive antigen, a RAB-2 protein, was selected using an immunoscreening technique. The expression of the Th1-type cytokine IFN-γ was elicited in mouse splenic cells that were co-cultured with the recombinant RAB-2 protein and in the sera of mice that were immunised with this protein and adjuvant (50 μg at 2-week intervals). In the A. cantonensis-infected groups, the mice were orally infected with 35 infective larvae, and a subset of the infected mice were immunised with the recombinant RAB-2 protein in adjuvant. Serum samples were collected every week for ELISA, and the pathological examinations were performed at 14 days post infection (dpi). An increase in IFN-γ expression was noted in the blood, and the brain sections revealed moderate eosinophilic meningitis in the immunised mice. The RAB-2 antigen of A. cantonensis induced a Th1-type immune response both in vitro and in vivo.
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Huang CC, Lee TJ, Chang PH, Lee YS, Chuang CC, Jhang YJ, Chen YW, Chen CW, Fu CH, Tsai CN. Expression of cathepsin S and its inhibitor stefin A in sinonasal inverted papilloma. Rhinology 2010. [DOI: 10.4193/rhin09.114] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Chen CC, Hsu PW, Erich Wu TW, Lee ST, Chang CN, Wei KC, Chuang CC, Wu CT, Lui TN, Hsu YH, Lin TK, Lee SC, Huang YC. Stereotactic brain biopsy: Single center retrospective analysis of complications. Clin Neurol Neurosurg 2009; 111:835-9. [PMID: 19765887 DOI: 10.1016/j.clineuro.2009.08.013] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2009] [Revised: 08/13/2009] [Accepted: 08/15/2009] [Indexed: 01/01/2023]
Abstract
OBJECTIVE Stereotactic biopsy is a widely used surgical technique for the histological diagnosis of intracranial lesions. Potential risks of this procedure, such as hemorrhage, seizure, and infection have been established, and different risk factors have been characterized. However, these risks have been addressed by only few studies conducted in Asian countries. MATERIALS AND METHODS The study group is comprised of 299 consecutive stereotactic biopsy procedures by 11 neurosurgeons between 2004 and 2007. The pre-operative medical conditions, methods of biopsy and postoperative complications were analyzed. RESULT The overall diagnostic yield was 90.64%. Complications were observed in 7.36% of the cases, with symptomatic hemorrhages occurring in 4.35% of the cases, and the overall mortality rate in this study population was 1.34%. Patients with liver cirrhosis were at a higher risk of hemorrhage. Other clinical, radiological, or histological variables were not associated with an increased risk of complications. CONCLUSION Stereotactic brain biopsy is a safe and reliable way to obtain a histological diagnosis. Based on our recent clinical experiences, the data suggests that more attention should be paid to liver cirrhotic patients, since the chance on hemorrhage is significantly larger.
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Affiliation(s)
- Ching-Chang Chen
- Department of Neurosurgery, Chang Gung Memorial Hospital, Chang Gung Medical College and University, 5, Fu-Shin Street, Kwei-Shan, Tao-Yuan County, Linkou 333, Taiwan
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Hsieh LF, Chen SC, Chuang CC, Chai HM, Chen WS, He YC. Supervised aerobic exercise is more effective than home aerobic exercise in female chinese patients with rheumatoid arthritis. J Rehabil Med 2009; 41:332-7. [DOI: 10.2340/16501977-0330] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Chuang CC, Chen CW, Fan CK, Su KE, Tsai YT, Chen CL, Du WY. Angiostrongylus cantonensis: apoptosis of inflammatory cells induced by treatment with mebendazole or/and interleukin 12 in mice. Exp Parasitol 2006; 115:226-32. [PMID: 17049518 DOI: 10.1016/j.exppara.2006.09.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2006] [Revised: 08/20/2006] [Accepted: 09/01/2006] [Indexed: 11/20/2022]
Abstract
Angiostrongylus cantonensis is the major cause of human eosinophilic meningoencephalitis. ICR mice were infected orally with 35 infective larvae and sacrificed at 4-14 days, 25 days or 32 days post infection (dpi) for pathological and immunocytochemical examinations. In the non-treated group, no apoptosis signal was found in the meninges or parenchyma of the brains (4-14 dpi). Only a few apoptotic cells were noticed at 25 dpi (3%) and 32 dpi (10%). In the groups, the animals were given a single dose of mebendazole (20 mg/kg, per os at various times) or injections of interleukin 12 (IL-12) (10 ng/daily, intraperitoneally), all the animals were sacrificed at 14 dpi; the number of apoptotic cells was increased (17-21%). In the group that received a single dose of mebendazole (4 dpi) in combination with IL-12 injections (4-13 dpi), mild meningitis was observed, and most of the infiltrated inflammatory cells were in the apoptotic program (55%). Taken together, apoptosis of the inflammatory cells (most were eosinophils) could be induced when the infected mice were treated with mebendazole or/and IL-12.
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Affiliation(s)
- Chih-Cheng Chuang
- Section of Allergy, Immunology and Rheumatology, Department of Internal Medicine, Shin Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan
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16
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Chao KC, Chao KF, Chuang CC, Liu SH. Blockade of interleukin 6 accelerates acinar cell apoptosis and attenuates experimental acute pancreatitis in vivo. Br J Surg 2006; 93:332-8. [PMID: 16392107 DOI: 10.1002/bjs.5251] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.3] [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: 02/06/2023]
Abstract
BACKGROUND It remains unclear whether interleukin (IL) 6 plays a role in initiating either the inflammatory or antiapoptotic responses in severe acute pancreatitis. This study examined the effect of neutralizing antibody against IL-6 on the induction of pancreatic acinar cell apoptosis and attenuation of the severity of severe acute pancreatitis. METHODS Experiments were conducted on laboratory mice with severe acute pancreatitis induced by lipopolysaccharide injection following six injections of caerulein at intervals of 6 h. Neutralizing monoclonal anti-IL-6 antibody was administered either 5 min or 2 h after the first caerulein injection. Apoptosis in pancreatic sections was determined by the terminal deoxynucleotidyltransferase-mediated dUTP-biotin nick-end labelling method. RESULTS Administration of caerulein and LPS induced an increase in serum amylase and IL-6 levels, severe acute pancreatitis, pancreatitis-associated lung injury, and phosphorylation of signal transducer and activator of transcription (STAT) 3 in the pancreas. A neutralizing antibody against IL-6 effectively suppressed these responses. Application of IL-6 neutralizing antibody caused the induction of apoptosis in the pancreatic acinar cells of mice with acute pancreatitis. CONCLUSION Blocking IL-6 suppresses STAT-3 activation in the pancreas and consequently attenuates the severity of severe acute pancreatitis by promotion of pancreatic acinar cell apoptosis.
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Affiliation(s)
- K C Chao
- Institute of Toxicology, College of Medicine, National Taiwan University, No. 1, Section 1, Jen-Ai Road, Taipei, 10043, Taiwan
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Abstract
STUDY OBJECTIVE To estimate the impact of the severe acute respiratory syndrome (SARS) outbreak in early 2003 on a tertiary care hospital in Taiwan, ROC. METHODS The study estimated the utilisation of resources related to infection control, SARS related medical services, and routine medical services, and SARS related medical outcomes at National Cheng Kung University Hospital (NCKUH) from 25 March to 16 June 2003 through a cross sectional survey of hospital records. RESULTS A mean of 5100 persons per day (95%CI 4580 to 5610) underwent fever screening at the outpatient and emergency department (ED) entrances to the hospital, of which 35 per day (95% CI 30 to 40) were referred for further evaluation for suspected or probable SARS. ED isolation surge capacity was created via 12 new beds outside the ED: eight for SARS assessment, three for patients awaiting in hospital bed assignment, and one for resuscitation. A total of 382 patients were fully evaluated for suspected or probable SARS outside the ED, of which 27 were admitted. The mean numbers of outpatient clinic patient visits, ED visits, ED trauma patient visits, ED admissions, hospital admissions, and operative procedures decreased during the outbreak. Thirty eight patients were hospitalised with suspected SARS, of which three received the final diagnosis of probable SARS. Two patients with probable SARS died. No cases of nosocomial SARS transmission occurred. CONCLUSIONS This SARS outbreak was associated with substantial use of hospital and ED resources aimed at infection control, comparatively less use of resources related to the medical care of patients with suspected or probable SARS, and decreased use of routine medical services.
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Affiliation(s)
- M C Tsai
- National Cheng Kung University Hospital, Tainan, Taiwan, ROC
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18
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Yang GCC, Chuang CC. Treatment of nanosized TiO2-containing wastewater by simultaneous electrocoagulation/electrofiltration. Water Sci Technol 2005; 52:377-81. [PMID: 16459812] [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: 05/06/2023]
Abstract
In this work, a simultaneous electrocoagulation/electrofiltration (EC/EF) treatment module was employed to treat nanosized TiO2-containing wastewater. Nanosized TiO2-containing wastewater was obtained and treated by a self-designed EC/EF treatment module. To evaluate the performance of this novel treatment module, the effects of electric field strength (EFS), transmembrane pressure (TMP), and crossflow velocity (CV) on permeate qualities were investigated. Permeate qualities of concern included pH, turbidity, conductivity, chemical oxygen demand (COD), and total organic carbon (TOC). A full factorial design of experiments was adopted in this work. First, by keeping TMP and CV constant the effects of EFS on permeate qualities were studied. In this set of testing, it was noticed that an application of electric field greatly increased the filtration rate, which was further influenced by the magnitude of EFS. In all cases, the filtration rate decreased as the treatment time elapsed due mainly to fouling of the membrane. Further tests were conducted to study the effects of TMP on permeate qualities by keeping EFS and CV constant. Finally, the effects of CV on permeate qualities were studied by keeping EFS and TMP constant. It was found that the optimal operating conditions would be electric field strength of 166.7 V/cm, transmembrane pressure of 1 kgf/cm2, and crossflow velocity of 0.22cm/s. Under such conditions, permeate would have the following qualities: (1) pH, 6.32; (2) turbidity, 2.41 NTU; (3) conductivity, 15.11 microS/cm; (4) COD, 100.0 mg/L; and (5) TOC, 512.6 mg/L.
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Affiliation(s)
- G C C Yang
- Institute of Environmental Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan.
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Abstract
The objective of this study was to assess the attitudes of emergency medical technicians (EMTs) toward tabletop drills to determine the effect of tabletop simulation on the EMT student perception of disaster preparedness and management. In November 1998 and April 1999, 59 firefighters underwent 260 hours of EMT intermediate level training at the National Cheng Kung University Hospital in Tainan, Taiwan. All participants had experience in field disaster exercise training before they attended this EMT training course. The EMT courses included a disaster and mass-casuality incident program. A 9-item questionnaire was completed by the 59 EMTs before (for field exercise) and after undergoing the tabletop drills. The results of the survey revealed that the field operation exercise could not provide adequate provisions to link the results of disaster exercises to appropriate changes in terms of training, equipment, supplies, and plans. Field operation failed to show the ability of others to fill in during the absence of key officials. Tabletop drilling provided better performance for these 2 issues. Tabletop exercise also provided a better chance than field exercise to evaluate the response without the use of telephones, which are not always reliable in real emergency situation. For disaster exercises, limitations of field operation drills such as communications, coordination, assignment of responsibilities, and postevent mitigation priorities were noted, and tabletop drills provided additional benefits for these settings. Large-scale effect evaluation of different drills may be necessary to design future disaster preparedness programs.
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Affiliation(s)
- C H Chi
- Department of Emergency Medicine, National Cheng Kung University Hospital, Tainan City, Taiwan.
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20
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Abstract
The present study was aimed at investigating the prevalence of thyroid dysfunction in the elderly, aged 65 years or older, in a community of southern Taiwan. By using the records of the local household registry, a sampling frame for the elderly population was constructed, and a sample of 1,400 subjects was drawn by simple random sampling. After the exclusion of nonresponse subjects, 917 subjects aged between 65 and 88 years (mean 71.9) were included in our survey. The serum thyrotropin levels of these participants were measured by monoclonal antibodies TSH immunoradiometric assays. A normal range, 0.45-4.65 microU/ml, was determined from the middle 95% of the TSH distribution of 140 'disease-free' subjects. By reference to the normal range, 23 (2.51%) participants had high (> 4.65 microU/ml), and 41 (4.47%) had low (< 0.46 microU/ml) TSH levels. The overall prevalence of thyroid dysfunction in the sample was 6.98%. Of the 23 participants with high TSH levels, 8 (34.8%) had low free T4 values (< 1.21 ng/dl), so-called overt hypothyroidism, and of the 41 participants with low TSH levels, only 1 (2.4%) had high T3 values, so-called T3 thyrotoxicosis. Antithyroid antibodies were found in 56.5% of those with high TSH levels but only 12.2% of those with low TSH levels (odds ratio = 8.53, 95% confidence limits = 2.55-28.50, p < 0.001). This result indicates that autoimmune disease is still the major cause of hypothyroidism in aged people. However, the prevalence of subclinical hyperthyroidism is higher than that of subclinical hypothyroidism and it might relate to nonautoimmune factors.
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Affiliation(s)
- C C Chuang
- Department of Emergency Medicine, National Cheng Kung University Hospital, Tainan, Taiwan, ROC.
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21
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Affiliation(s)
- J Wang
- Department of Pathology, Harbor-UCLA Medical Center, Torrance, Calif, USA
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22
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Lin KH, Chuang CC, Wu HD, Chang CW, Kou YR. Abdominal weight and inspiratory resistance: their immediate effects on inspiratory muscle functions during maximal voluntary breathing in chronic tetraplegic patients. Arch Phys Med Rehabil 1999; 80:741-5. [PMID: 10414755 DOI: 10.1016/s0003-9993(99)90220-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
OBJECTIVE To study the immediate effects of maximal voluntary (MV) breathing, with and without abdominal weight (AW) or inspiratory resistance (IR), on inspiratory muscle functions in chronic tetraplegic patients. DESIGN A crossover trial design. SETTING Rehabilitation department of a university hospital. PARTICIPANTS Nine tetraplegic men injured at the C4 to T1 levels, with a mean duration of injury of 72.8 months. INTERVENTIONS Each subject performed MV breathing without and with AW load (AWMV breathing) and IR load (IRMV breathing) separately. MAIN OUTCOME MEASURES Electromyographic (EMG) activity of the inspiratory muscles, mouth pressure, inspiratory flow, and inspiratory volume. RESULTS AWMV breathing evoked greater diaphragmatic EMG activity, inspiratory flow, and inspiratory volume than did IRMV breathing, although the increase of diaphragmatic EMG activity was not statistically significant. Conversely, IRMV breathing produced greater sternocleidomastoid EMG activity and negative mouth pressure than did AWMV breathing. Both AWMV and IRMV breathing evoked greater inspiratory muscle EMG activity than did MV breathing. CONCLUSION AW and IR loads have differential immediate effects on the inspiratory muscle functions during MV breathing in patients with chronic tetraplegia, suggesting that these two breathing maneuvers may have dissimilar mechanisms of training in such patients. The muscle EMG activity evoked during MV breathing with AW or IR is greater than that without a mechanical load, implying that mechanically loaded training in tetraplegic patients results in load compensatory adjustments via their respiratory motor output to improve respiratory function.
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Affiliation(s)
- K H Lin
- School of Physical Therapy, College of Medicine, National Taiwan University, Taipei, ROC
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23
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Chow LP, Chou MH, Ho CY, Chuang CC, Pan FM, Wu SH, Lin JY. Purification, characterization and molecular cloning of trichoanguin, a novel type I ribosome-inactivating protein from the seeds of Trichosanthes anguina. Biochem J 1999; 338 ( Pt 1):211-9. [PMID: 9931318 PMCID: PMC1220044] [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: 02/10/2023]
Abstract
The seeds of the plant Trichosanthes anguina contain a type I ribosome-inactivating protein (RIP), designated trichoanguin, which was purified to apparent homogeneity by the combined use of ion-exchange chromatographies, i.e. first with DE-52 cellulose and then with CM-52 cellulose. The protein was found to be a glycoprotein with a molecular mass of 35 kDa and a pI of 9.1. It strongly inhibits the protein synthesis of rabbit reticulocyte lysate, with an IC50 of 0.08 nM, but only weakly that of HeLa cells, with an IC50 of 6 microM. Trichoanguin cleaves at the A4324 site of rat 28 S rRNA by its N-glycosidase activity. The cDNA of trichoanguin consists of 1039 nt and encodes an open reading frame coding for a polypeptide of 294 amino acid residues. The first 19 residues of this polypeptide encode a signal peptide sequence and the last 30 residues comprise an extension at its C-terminus. There are four potential glycosylation sites, located at Asn-51, Asn-65, Asn-201 and Asn-226. A comparison of the amino acid sequence of trichoanguin with those of RIPs such as trichosanthin, alpha-momorcharin, ricin A-chain and abrin A-chain reveals 55%, 48%, 36% and 34% identity respectively. Molecular homology modelling of trichoanguin indicates that its tertiary structure closely resembles those of trichosanthin and alpha-momorcharin. The large structural similarities might account for their common biological effects such as an abortifacient, an anti-tumour agent and anti-HIV-1 activities. Trichoanguin contains two cysteine residues, Cys-32 and Cys-155, with the former being likely to be located on the protein surface, which is directly amenable for conjugation with antibodies to form immunoconjugates. It is therefore conceivable that trichoanguin might be a better type I RIP than any other so far examined for the preparation of immunotoxins, with a great potential for application as an effective chemotherapeutic agent for the treatment of cancer.
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Affiliation(s)
- L P Chow
- Institute of Biochemistry, College of Medicine, National Taiwan University, Taipei, Republic of China.
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24
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Chuang CC, Wu SH, Chiou SH, Chang GG. Homology modeling of cephalopod lens S-crystallin: a natural mutant of sigma-class glutathione transferase with diminished endogenous activity. Biophys J 1999; 76:679-90. [PMID: 9929473 PMCID: PMC1300073 DOI: 10.1016/s0006-3495(99)77235-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
The soluble S-crystallin constitutes the major lens protein in cephalopods. The primary amino acid sequence of S-crystallin shows an overall 41% identity with the digestive gland sigma-class glutathione transferase (GST) of cephalopod. However, the lens S-crystallin fails to bind to the S-hexylglutathione affinity column and shows very little GST activity in the nucleophilic aromatic substitution reaction between GSH and 1-chloro-2,4-dinitrobenzene. When compared with other classes of GST, the S-crystallin has an 11-amino acid residues insertion between the conserved alpha4 and alpha5 helices. Based on the crystal structure of squid sigma-class GST, a tertiary structure model for the octopus lens S-crystallin is constructed. The modeled S-crystallin structure has an overall topology similar to the squid sigma-class GST, albeit with longer alpha4 and alpha5 helical chains, corresponding to the long insertion. This insertion, however, makes the active center region of S-crystallin to be in a more closed conformation than the sigma-class GST. The active center region of S-crystallin is even more shielded and buried after dimerization, which may explain for the failure of S-crystallin to bind to the immobilized-glutathione in affinity chromatography. In the active site region, the electrostatic potential surface calculated from the modeled structure is quite different from that of squid GST. The positively charged environment, which contributes to stabilize the negatively charged Meisenheimer complex, is altered in S-crystallin probably because of mutation of Asn99 in GST to Asp101 in S-crystallin. Furthermore, the important Phe106 in authentic GST is changed to His108 in S-crystallin. Combining the topological differences as revealed by computer graphics and sequence variation at these structurally relevant residues provide strong structural evidences to account for the much decreased GST activity of S-crystallin as compared with the authentic GST of the digestive gland.
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Affiliation(s)
- C C Chuang
- Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan, Republic of China
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25
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Chuang CC, Tan SK, Tai LK, Hsin JP, Wang FF. Evidence for the involvement of protein kinase C in the inhibition of prolactin gene expression by transforming growth factor-beta2. Mol Pharmacol 1998; 53:1054-61. [PMID: 9614208] [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: 02/07/2023] Open
Abstract
We investigated the mechanisms by which transforming growth factor (TGF)-beta2 inhibited prolactin mRNA expression in GH3 rat pituitary tumor cells. Maximal inhibition was observed with cells exposed to 5 ng/ml TGF-beta2 for 24 hr. Continuous presence of the hormone during the entire period was not necessary because exposure of cells to TGF-beta2 for 20 min was sufficient to trigger the same extent of prolactin mRNA inhibition at 24 hr as with its persistent presence. The action of TGF-beta2 could be abolished by cycloheximide or EGTA, suggesting the requirement of a newly synthesized protein and extracellular Ca2+. The response of prolactin mRNA to TGF-beta2 was inhibited by preincubation of cells with phorbol-12-myristate-13-acetate, which down-regulated protein kinase C (PKC). The activities of both the cytosolic and membrane PKC were significantly reduced at 20 min after TGF-beta2 addition, and inhibition continued to 24 hr, the last time point analyzed. However, the ratio of cytosolic to membrane PKC was not altered by TGF-beta2. Inhibition of PKC did not require the sustained presence of TGF-beta2. In vitro kinase assays of the immunoprecipitated PKC demonstrated that the activities of alpha, epsilon, mu, and zeta isozymes were significantly decreased in the TGF-beta2-treated cells, whereas that of PKClambda was not affected. Western blotting did not reveal any change in PKCepsilon steady state protein levels, suggesting TGF-beta2 inhibits PKC activity through a post-translational mechanism. Our results support that inhibition of PKC activity is an early event mediating TGF-beta2-inhibited prolactin mRNA expression in GH3 cells.
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Affiliation(s)
- C C Chuang
- Institute of Biochemistry, National Yang-Ming University, Shih-Pai, Taipei, Taiwan 11221
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26
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Abstract
Primary adrenal lymphoma (PAL) is extremely uncommon. We describe a case of clinically silent non-Hodgkin's B-cell lymphoma of diffuse large cell type with exclusive left adrenal localization. The tumor was discovered by computed tomography (CT) as a 2.5-cm dense mass and diagnosed at autopsy. Literature concerning this unusual neoplasm is reviewed. During the early stage, particularly when the lesion is small, PAL is likely to be missed. This unusual entity should be included in the differential diagnosis of adrenal masses so that early diagnosis may be made and intervention might dramatically affect the clinical outcome.
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Affiliation(s)
- J Wang
- Department of Pathology, Harbor-UCLA Medical Center, Torrance, California 90509, USA
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27
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Chuang CC, Wang ST, Yang CC, Deng JF. Clinical experience with pendimethalin (STOMP) poisoning in Taiwan. Vet Hum Toxicol 1998; 40:149-50. [PMID: 9610493] [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: 02/07/2023]
Abstract
The herbicide pendimethalin (STOMP) shares a similar chemical structure with nitro compounds such as dinitrobenzene, which was previously demonstrated to cause methemoglobinemia in mammals. However, reports on STOMP poisoning in humans are rare. We reviewed 71 STOMP poisoning cases (42 men and 29 women of mean age 43.9 +/- 2.5 y) reported to the Poison Control Center--Taiwan from September 1986 to September 1997 and summarized their clinical manifestations. Two incidences resulted from skin and eye contact. The rest were due to oral ingestion intentionally or accidentally. The average ingestion was 106.1 +/- 13.4 ml. Among them, 20 cases had no symptoms or signs, 38 had mild effects such as nausea, vomiting and sore throat, 7 had effects such as severe retching, hematemesis and seizures. Four patients expired due to also taking other herbicides (mainly organophosphates) and because of inadequate airway management. Adequate ventilation support was the major therapy in salvaging the poisoning cases.
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Affiliation(s)
- C C Chuang
- Department of Emergency Medicine, National Cheng Kung University Hospital, Tainan, Taiwan
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28
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Abstract
The major purposes of this study were to assess the quality of life (QOL) of spinal cord injured patients, and to assess the possible factors affecting the QOL. The survey was conducted from 1992-1993 by mailed questionnaires to members of Spinal Cord Injury Association of the Republic of China. There were 347 quality responses with the mean age of 37.5 +/- 10.2 years old and the mean duration of illness of 7.8 +/- 6.8 years. The questionnaire included five domains, physical mobility, environment-transportation, psychosocial adjustment, education and economics for a total of 39 items. Each item contained a rating of 'importance' and 'satisfaction'. The quality of life index (QLI) was calculated by multiplying the satisfaction score with the importance score, then dividing by the possible highest score. The major results included: (1) the subjects had mild to moderate dissatisfaction with most items in five domains except psychosocial adjustment: (2) quality of life in those with complete tetraplegia (QLI = -0.41) and incomplete tetraplegia (QLI = -0.31) was significantly lower than that of those with complete paraplegia (QLI = -0.13) and incomplete paraplegia (QLI = -0.04); (3) both the severity of injury and the post-injury working status were the major factors affecting the life quality of spinal cord injured patients in Taiwan.
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Affiliation(s)
- K H Lin
- School of Physical Therapy, National Taiwan University, Taipei, ROC
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29
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Wei FC, el-Gammal TA, Lin CH, Chuang CC, Chen HC, Chen SH. Metacarpal hand: classification and guidelines for microsurgical reconstruction with toe transfers. Plast Reconstr Surg 1997; 99:122-8. [PMID: 8982195 DOI: 10.1097/00006534-199701000-00019] [Citation(s) in RCA: 71] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Metacarpal hand refers to the hand that has lost its prehensile ability through amputation of all fingers with or without amputation of the thumb. Functional restoration can be achieved by a wide variety of microvascular toe transfer techniques. When deciding which procedure should be used, careful consideration must be given to the level of amputation of the fingers as well as the functional status of the remaining thumb. In this article we propose a classification for the various patterns of the metacarpal hand along with guidelines for selection of the proper toe transfer procedure.
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Affiliation(s)
- F C Wei
- Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Medical College, Taipei, Taiwan
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30
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Yeh SF, Pan W, Ong GT, Chiou AJ, Chuang CC, Chiou SH, Wu SH. Study of structure-activity correlation in destruxins, a class of cyclodepsipeptides possessing suppressive effect on the generation of hepatitis B virus surface antigen in human hepatoma cells. Biochem Biophys Res Commun 1996; 229:65-72. [PMID: 8954084 DOI: 10.1006/bbrc.1996.1758] [Citation(s) in RCA: 27] [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: 02/03/2023]
Abstract
A new destruxin [destruxin E2 chlorohydrin] was isolated from the culture medium of Metarrhizium anisopliae and its structure was determined by NMR spectroscopy and mass spectrometry. As compared with other destruxins, the new destruxin showed a lower suppressive activity on the production of hepatitis B virus surface antigen in human hepatoma Hep3B cells. NMR study coupled with molecular modeling by computer graphics has revealed that the hydrophobicity nature of the convex surface characteristic of all destruxin molecules plays an important role in their biological activity.
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Affiliation(s)
- S F Yeh
- Institute of Biochemistry, National Yang-Ming University, Taipei, Taiwan.
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31
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Hsiao YM, Chuang CC, Chuang LC, Yu HM, Wang KT, Chiou SH, Wu SH. Protein engineering of venom toxins by synthetic approach and NMR dynamic simulation: status of basic amino acid residues in waglerin I. Biochem Biophys Res Commun 1996; 227:59-63. [PMID: 8858103 DOI: 10.1006/bbrc.1996.1467] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The tertiary structure of waglerin I has been determined by NMR and dynamic simulated annealing [Chuang et al., Biochim. Biophys. Acta 1292, 145-155 (1996)]. It is believed that the peptide basicity of waglerin may play an important role for its activity due to its high content of basic amino acids. In order to investigate the active site of the toxin, seven analogues of waglerin, [Ala3]-waglerin, [Ala7]-waglerin, [Ala10]-waglerin, [Ala14]-waglerin, [Ala18]-waglerin, [Ala20]-waglerin and [Ala22]-waglerin have been synthesized chemically by single replacement of basic amino acid residues one by one with Ala. By correlation of structures for each analogue with LD50 toxicity bioassays, it is found that the [Ala10]-waglerin exhibits no toxicity and the active site of the native toxin seems to reside in the proximity of the disulfide loop, which is spatially close to His10. Furthermore, the closer is the disulfide loop to the basic amino acid in waglerin, the more influential is the basic amino acid on the toxicity of waglerin. Based on the tertiary structure of waglerin, the structures of all synthetic analogues were derived based on computer-simulated modelling. By the pair-wise structural comparison, the disulfide loop in [Ala10]-waglerin analogue is found to be twisted as compared to the native form, in agreement with the lack of toxicity for this synthetic analogue.
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Affiliation(s)
- Y M Hsiao
- Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan
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32
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Chuang CC, Chen WC, Lee SY, Wang KT. [The effect of blood AST, ALT and lactate after short and middle distance exercise training]. Kaohsiung J Med Sci 1996; 12:544-8. [PMID: 8819358] [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: 02/02/2023] Open
Abstract
Twenty-four nursing college students aged 16 and 17 years were selected as research subjects and divided into two groups. Group A comprised 12 individuals who were trained for short distance running (5km/day) over a four-week period, while group B was trained for middle distance running (7km/day) during the same period. Blood AST (aspartate aminotransferase), ALT (alanine aminotransferase) and lactate were performed at rest (before training) and after exercise every week. After both short and middle distance exercise training, the lactate values after 1-3 week(s) training period were persistently higher than those before training and the differences between then are significant. However, the lactate value after 4 weeks training period is lower than that after the third week training. There are significant differences between the AST values after 1-4 week(s) training period and those before exercise in short distance exercise training. There are no significant differences between the AST values after training and those before exercise in middle distance exercise training. The ALT values after 1-4 week(s) training period were lower than those before exercise in short and middle distance exercise training. In conclusion, after 4 weeks training, the lactate and AST values can't reduce to those before training in middle distance exercise training, and the lactate value in short distance exercise training is the same as former. Further investigation is needed.
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Affiliation(s)
- C C Chuang
- Section of Sport Education, Kaohsiung Medical College, Taiwan, Republic of China
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33
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Abstract
Nine cases of hand degloving injuries were treated successfully with arteriovenous shunting technique. Of these nine cases, four were degloved from the wrist level and one from the forearm, three were degloved at the palm and one at the dorsum of the hand. All injuries resulted in distally based skin flaps, which were either superficial to the palmar fascia or within the subcutaneous layer. Lack of active bleeding from the periphery of the avulsed flaps substantiated circulatory compromise before revascularization. Survival of the avulsed flaps was achieved by directing the proximal arterial flow into the venous channel within the avulsed skin flaps. The post-operative care and rehabilitation were straightforward, and functional results were satisfactory.
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Affiliation(s)
- W M Hsu
- Department of Plastic and Reconstructive Surgery, Chi Mei Foundation Hospital, Taipei, Taiwan
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34
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Chuang CC, Wang SR, Lee HL. Bronchial responsiveness of aged asthmatic patients to bronchodilator and methacholine. Asian Pac J Allergy Immunol 1996; 14:1-4. [PMID: 8980792] [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: 02/03/2023]
Abstract
Geriatric asthma is characterized by prolonged illness, lower remission rate, poor response to therapy and higher mortality rate. We studied bronchodilator response and methacholine challenge in 25 aged non-smoking asthmatic patients; thirty-two young asthmatic patients were included as control. The elderly patients had poorer baseline pulmonary function and were more responsive to a bronchodilator than the younger patients. The response to bronchoprovocation did not show any difference between the two groups. Our findings suggested that the airways of elderly asthmatics are as sensitive as those of younger patients and should not be under-treated.
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Affiliation(s)
- C C Chuang
- Department of Medicine, Veterans General Hospital, Taipei, Taiwan
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35
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Billica RD, Simmons SC, Mathes KL, McKinley BA, Chuang CC, Wear ML, Hamm PB. Perception of the medical risk of spaceflight. Aviat Space Environ Med 1996; 67:467-73. [PMID: 8725475] [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] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
We conducted an opinion survey to improve the characterization of medical risk during spaceflight, using a questionnaire designed to elicit space medicine experts' perceptions of the probability, health effect, and mission impact of selected medical events occurring during spaceflight missions of 30-90 d. This questionnaire was directed toward those events about which little data currently exist, therefore medical events that have occurred during spaceflights with some frequency, such as space motion sickness, were excluded from the questionnaire. The questionnaire was mailed to 99 clinical and research professionals involved with NASA medical programs; 65 responses were returned, of which 60 could be analyzed. The experts rated skin disorders as the most likely to occur, but which would have little effect on mission completion or astronaut health. Circulatory diseases were rated as having the lowest probability of occurrence, but the highest effect on the mission or on a crewmember's health. The results of this survey will be combined with data from analogous populations and existing astronaut health data to establish a data set to support decisions about allocation of health care resources.
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Affiliation(s)
- R D Billica
- Lyndon B. Johnson Space Center, National Aeronautics and Space Administration, Houston, TX 77058-3696, USA
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36
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Chuang CC, Huang WC, Yu HM, Wang KT, Wu SH. Conformation of Vespa basalis mastoparan-B in trifluoroethanol-containing aqueous solution. Biochim Biophys Acta 1996; 1292:1-8. [PMID: 8547331 DOI: 10.1016/0167-4838(95)00168-9] [Citation(s) in RCA: 22] [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] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Mastoparan-B, a tetradecapeptide isolated from the venom of the hornet Vespa basalis, belongs to the mastoparan analogs of vespid venom with the lysine residues common for all mastoparan family toxins at positions 4, 11 and 12. Here we use 1H-NMR spectroscopy and hybrid distance geometry-simulated annealing calculation to investigate its three-dimensional structure in trifluoroethanol-containing aqueous solution. The calculated structure shows that residues 3-14 adopt an amphiphilic alpha-helical structure in which the residues with hydrophilic side chains (i.e. Lys-4, Ser-5, Ser-8, Lys-11, Lys-12) are located on one side and the residues with hydrophobic side chains (i.e. Leu-3, Ile-6, Trp-9, Ala-10, Val-13, Leu-14) located on the other side of the molecule. The overall structural features a very similar to the conformation of mastoparan-X reconstituted in vesicle [Wakamatsu et al. (1992) Biochemistry 31, 5654-5660] in spite of the substitutions made for eight residues with distinctly different hydrophobicity. These substitutions lead to a larger hydrophobic moment for the alpha-helical segment and further mobilized N-terminal. This study will help reveal the conformational significance of mastoparan toxins with respect to their potency and activity in G protein regulation.
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Affiliation(s)
- C C Chuang
- Department of Chemistry, National Taiwan Normal University, Taipei, R.O.C
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Kröning R, Jones JA, Hom DK, Chuang CC, Sanga R, Los G, Howell SB, Christen RD. Enhancement of drug sensitivity of human malignancies by epidermal growth factor. Br J Cancer 1995; 72:615-9. [PMID: 7669570 PMCID: PMC2033868 DOI: 10.1038/bjc.1995.382] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
We have previously shown that epidermal growth factor (EGF) enhances the in vitro and in vivo sensitivity of human ovarian carcinoma 2008 cells to cisplatin. EGF was found to enhance selectively the in vivo toxicity of cisplatin to 2008 cell xenografts without altering the toxicity of cisplatin to non-malignant target tissues such as the kidney or bone marrow. We now show that recombinant human EGF (rhEGF) enhances the cisplatin sensitivity of cell lines representative of many other types of malignancies in addition to ovarian carcinoma, including cancers of the head and neck, cervix, colon, pancreas and prostate, as well as non-small-cell carcinoma of the lung. In addition, rhEGF was found to sensitise cells to other platinum-containing drugs and several other classes of chemotherapeutic agents. rhEGF sensitised 2008 cells not only to cisplatin, but also to carboplatin and tetraplatin, as well as taxol, melphalan and 5-fluorouracil. We conclude that modulation of drug sensitivity by rhEGF is observed in cell lines representative of many human malignancies and for multiple classes of chemotherapeutic agents, indicating that it alters one or more components of the cellular damage response that are both common between cell lines and classes of drugs and fundamental to survival.
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Affiliation(s)
- R Kröning
- Department of Medicine, University of California San Diego, La Jolla 92093-0812, USA
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38
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Chuang CC, Lee SY, Wang KT. [Impact of exercise on athlete's cardiac muscle evaluated by Troponin T test]. Gaoxiong Yi Xue Ke Xue Za Zhi 1995; 11:150-6. [PMID: 7707464] [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: 01/26/2023]
Abstract
Twenty-four nursing college students ages 16 to 17 Year were selected as research subjects and divided into two group. Group A comprised 12 individuals who were trained for short distance running (5KM/day) over a five week period, while Group B was trained for middle distance running (7KM/day) during the same period. Breathing frequency, blood pressure, pulse rate and body surface skin temperature were measured at rest (before training) and after exercise every week. Troponin T (TnT). Creatin kinase (CK), Creatine kinase -MB (CK-MB), and Lactate Dehydrogenase (LDH) tests were performed using blood samples and were used as indicators of the impact on heart muscle during exercise. There were no significant differences in breathing frequency, blood pressure, pulse rate or body surface skin temperature between groups A and B before or after training. After one week, the CK levels in both group were higher after exercising than before the training program had begun, and there were significant differences (P < 0.05) between the two groups. Thenceforth, the CK levels in group A decreased to the normal values and stayed the same throughout the fifth week. The CK levels in group B decreased to the normal value after training for three weeks, and there were significant differences between the values before exercising and those for the forth and fifth weeks of training. Although the levels of CK-MB, LDH, and Troponin-T increased after training, all were within the normal range, and no significant difference was observed before or after five weeks of training.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- C C Chuang
- Section of Sport Education, Kaohsiung Medical College, Taiwan, Republic of China
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Chuang CC, Chang DY, Chen RJ, Cheng WF, Chow SN, Huang SC. Torsion of an ovarian borderline tumor with extreme serum tumor markers: a case report. Zhonghua Yi Xue Za Zhi (Taipei) 1995; 55:278-82. [PMID: 7780889] [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: 01/27/2023]
Abstract
A postmenopausal woman with torsion of the left ovarian mucinous cystadenoma with borderline malignancy is reported. Extremely elevated serum tumor markers such as carcinoembryonic antigen (CEA) (398.0 ng/mL, normal < 3.0 ng/mL), carbohydrate antigen 19-9 (CA 19-9) (240 U/mL, normal < 37 U/mL) and tissue polypeptide antigen (TPA) (1,918 U/L, normal < 110 U/L) were found preoperatively. Imaging studies such as ultrasound and computed tomogram favored a diagnosis of ovarian malignancy, and advanced ovarian cancer was suspected prior to operation. Diagnosis of borderline malignancy was first made by frozen section during laparotomy. The patient recovered following simple total hysterectomy and bilateral salpingo-oophorectomy. Serum levels of the tumor markers became normal gradually following operation. To present knowledge, this is the first reported case with extremely high serum tumor markers in a postmenopausal woman with torsion of a stage-Ia ovarian mucinous cystadenoma of borderline malignancy. Rapid release of these tumor markers into circulation secondary to necrosis and degeneration of the tumor cells following torsion might account for such an unusual finding.
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Affiliation(s)
- C C Chuang
- Department of Obstetrics and Gynecology, College of Medicine, National Taiwan University, Taipei, R.O.C
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Abstract
The case of a 43-year-old man is reported in which a 15-cm defect of the tibia sustained 8 months previously was treated by the double-rib composite microvascular free transfer. The fracture site united, and the grafted ribs showed some hypertrophy at 1 year. He returned to his job. At 5 years follow-up, the x-ray film showed good hypertrophy of the grafted ribs.
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Affiliation(s)
- W N Ueng
- Department of Orthopedic Surgery, Chang Gung Memorial Hospital, Chang Gung Medical College, Taiwan, Republic of China
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41
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Cheng HC, Chuang CC, Wang KT. [Physiological changes in the metabolism of football trainees following a match under high temperature]. Gaoxiong Yi Xue Ke Xue Za Zhi 1994; 10:640-8. [PMID: 7837324] [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: 01/27/2023]
Abstract
The effects of a football match on the muscle metabolism of long-term football players were studied. Twenty-two senior high school students (Age: 16.95 +/- 0.82 y/o) were divided into two groups. Group A, included the subjects with longer histories of playing football (7 years) and group B were those with a shorter histories (6 years). There was no statistical difference between the two groups (p > 0.05). The temperature of all muscles tested showed statistical differences after exercise (p < 0.05). After 24 hours, all muscles except the gluteus maximus returned to the normal state while the skin temperature of the latissimus dorsi did not have any change. Body temperature, pulse rate, respiratory rate, and diastolic pressure all significantly increased immediately after the match (p < 0.05) and they all returned to their normal resting rate within one hour, except the body temperature, which required two hours to return to normal. A comparison between groups A and B showed a significant difference (p < 0.01) in creatine kinase level immediately and one hour after the match. It is inferred that energy is derived from the aerobic system.
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Affiliation(s)
- H C Cheng
- Section of Sport Education, National Kaohsiung Institute Technology, Taiwan, Republic of China
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Abstract
Thirty-six patients with 72 metacarpal and phalangeal fractures with associated injuries to the neurovascular bundle, tendon, soft tissue, or bone following acute complex hand injury were treated with miniature plates and screws and reconstruction of the disrupted and missing structures. The results were judged according to the criteria of the American Society for Surgery of the Hand. The overall results were good in 46.3%, fair in 32.2%, and poor in 21.5%. Although traditional wiring techniques are certainly useful in complex hand injuries, internal osteosynthesis with miniature plates and screws has definite indications in cases requiring stable and rigid internal fixation.
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Affiliation(s)
- S H Chen
- Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Taipei, Taiwan, Republic of China
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Wei FC, Strauch RJ, Chen HC, Chuang CC. Reconstruction of four damaged or destroyed ipsilateral fingers with free toe-to-hand transplantations. Plast Reconstr Surg 1994; 93:608-14. [PMID: 8115522] [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: 01/28/2023]
Abstract
Three patients with traumatic partial or complete loss of all ipsilateral digits, excluding the thumb, were reconstructed with free microvascular toe transplantations for all involved digits. In two cases, two pairs of combined second and third toe transplantations were utilized; in the third case, four separate toes were employed. Clinical follow-up was 8 1/2 years, 2 years, and 1 2/3 years. Detailed functional analysis was performed. All patients except the first had initially undergone reconstruction of only two digits and had requested a second procedure to transfer two additional toes. While reconstruction of the thumb and two opposing digits is adequate in most cases, selected patients may benefit from the additional two digits, especially with respect to improving hook grip.
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Affiliation(s)
- F C Wei
- Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Taipei, Taiwan
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Abstract
Microsurgical toe transfer is an established method for reconstruction of missing thumbs. However, there is little agreement on which of the various techniques represents the ideal transfer. Basically, selection of technique requires balancing the patient's functional needs, appearance of the reconstructed thumb, and donor-site cosmesis. Based on our experience with 103 toe-to-thumb transfers performed over the past 9 years, this paper attempts to provide guidelines for appropriate selection among the four most commonly employed toe transfer techniques (e.g., second toe, total great toe, great toe wrap-around, trimmed great toe) so that optimal results and patient's acceptance can both be achieved.
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Affiliation(s)
- F C Wei
- Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Taipei, Taiwan
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Abstract
Microsurgical replantation has been attempted in the distal phalanx of the digits. Twenty-three complete, single digit amputations are reviewed. The patients' ages ranged from 9 months to 48 years. Viability was 78%. Sensory recovery averaged 7 mm static two-point discrimination. Range of motion in the distal interphalangeal joint of the finger and the interphalangeal joint of the thumb averaged 64 and 51 degrees, respectively. Eight of the 17 successfully replanted digits had mild to moderate atrophy. Eighty-two percent of patients were able to use the replanted digit successfully in their daily work. We feel that distal digital replantation is rewarding. In successful cases, it always preserves acceptable function and good appearance at a price of an average of 2.3 months off work.
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Affiliation(s)
- C T Chen
- Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Taipei, Taiwan, Republic of China
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Abstract
The recipient vessels are of prime importance in free flap transfers to the lower limbs. To determine the incidence and pattern of vascular trauma, a study was carried out in 126 patients who had Gustillo Type III open fractures of the distal legs and feet that required free flaps for wound coverage. In comparison with the posterior tibial artery, the anterior tibial artery has a much higher incidence of injury with more extensive damage. It can be injured at a more proximal level than estimated from gross inspection during surgery. This should be borne in mind when the anterior tibial artery is selected as the recipient artery in order to prevent reexploration and failure of the flaps. However, the posterior tibial artery is much less vulnerable to damage in most injuries and is more reliable as the recipient artery. In this series there was no problem in finding proper recipient veins in the legs. A general principle is proposed for selecting recipient vessels in crushed legs, with a warning against the pitfalls that have been encountered.
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Affiliation(s)
- H C Chen
- Department of Plastic Surgery, Chang Gung Memorial Hospital, Taipei, Taiwan, Republic of China
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Wei FC, Epstein MD, Chen HC, Chuang CC, Chen HT. Microsurgical reconstruction of distal digits following mutilating hand injuries: results in 121 patients. Br J Plast Surg 1993; 46:181-6. [PMID: 8490695 DOI: 10.1016/0007-1226(93)90165-8] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
From 1982-1989, 152 mutilated distal digits were reconstructed with microsurgical foot tissue transfers in 121 patients. These various foot tissues included wrap-around flaps or pulp from the great toe, second toe, or third toe, as well as partial toe, nail, web space skin, and other portions of the foot. The reconstructions were carried out primarily and secondarily in 78 and 74 patients respectively. The immediate success rate was 98%. Most of the patients were satisfied with both the cosmetic appearance and the functional result. This relatively minor microsurgical foot tissue transfer proved to be an ideal reconstructive option for distal digital defects.
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Affiliation(s)
- F C Wei
- Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Taipei, Taiwan, R.O.C
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Yeh MC, Wei FC, Chen HC, Chuang CC, Chen SH. [Reconstructive microsurgery in the elderly]. Changgeng Yi Xue Za Zhi 1993; 16:47-51. [PMID: 8490775] [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: 05/22/2023]
Abstract
Between 1989 and 1990, 20 patients older than 60 years underwent reconstructive microsurgery in our hospital. The procedures consisted of 6 digital replantations in 5 patients and 17 free tissue transfers in 15 patients. The success were 5 out of 6 digital replantations and 16 out of 17 free tissue transfers. This success rate had no significant difference compared with other age groups of our reconstructive microsurgery series. There was no additional complications which might always be considered to encounter with elder patients after prolonged anesthesia. We conclude that with good preoperative work up, careful intraoperative or postoperative care as well as meticulous operative technique, the operative risk remains low and the success rate is comparable to other age groups.
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Affiliation(s)
- M C Yeh
- Department of Plastic Surgery, Chang Gung Memorial Hospital, Taipei, Taiwan, R.O.C
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Wei FC, Seah CS, Chen HC, Chuang CC. Functional and esthetic reconstruction of a mutilated hand using multiple toe transfers and iliac osteocutaneous flap: a case report. Microsurgery 1993; 14:388-90. [PMID: 8371686 DOI: 10.1002/micr.1920140607] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
With reconstructive microsurgical techniques, some previously hopelessly mutilated hands have become reconstructable. The functional and esthetic results of such hands can be improved to an acceptable degree with through prereconstruction evaluation and planning. This case report demonstrates the approach to reconstruction of a mutilated hand using the following: a pedicle groin flap for soft tissue reconstruction of the first web space and the amputation stump of the thumb; a combined second and third toe transfer for reconstruction of opposable fingers at the amputated index and middle finger stumps; a single second toe for reconstruction of the thumb, and an iliac osteocutaneous flap for reconstruction of the ulnar border of the palm.
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Affiliation(s)
- F C Wei
- Department of Plastic Surgery, Chang Gung Memorial Hospital, Taipei, Taiwan, Republic of China
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50
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Chen SH, Wei FC, Chen HC, Chuang CC, Noordhoff MS. Emergency free-flap transfer for reconstruction of acute complex extremity wounds. Plast Reconstr Surg 1992; 89:882-8; discussion 889-90. [PMID: 1561260] [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: 12/27/2022]
Abstract
Nine patients with complex extremity injuries were treated with emergency free-flap transfers over a 3 1/2-year period. The transferred emergency free flaps were performed to cover exposed vital structures. All flaps survived without infection. Complete and careful assessment of the systemic condition of the patient and the nature of the injured extremity is mandatory. Emergency free-flap transfers may salvage the limb or finger and may improve the functional and aesthetic results with the shortest possible hospital stay.
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Affiliation(s)
- S H Chen
- Department of Plastic and Reconstruction Surgery, Chang Gung Memorial Hospital, Taipei, Taiwan
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