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Suttie C, Hong A, Stalley P, Veillard AS, Tattersall M. Does Chemotherapy Shorten the Latency Interval of Radiation-induced Sarcomas? Clin Oncol (R Coll Radiol) 2012; 24:77-9. [DOI: 10.1016/j.clon.2011.09.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2011] [Accepted: 09/28/2011] [Indexed: 11/29/2022]
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Chow L, Wahba R, Hong A, Walker A. Epidural catheter migration during labor: a comparison between standard and Epi-Guard fixation. Int J Obstet Anesth 2011; 20:366-7. [PMID: 21907566 DOI: 10.1016/j.ijoa.2011.07.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2011] [Revised: 06/23/2011] [Accepted: 07/04/2011] [Indexed: 12/01/2022]
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Pang E, Delic N, Hong A, Zhang M, Rose B, Lyons J. O48. Radiation-induced cell death of keratinocytes is enhanced by HPV16 oncoprotein E6∗I: A possible mechanism for the improved clinical outcome of HPV positive oropharyngeal squamous cell carcinoma patients. Oral Oncol 2011. [DOI: 10.1016/j.oraloncology.2011.06.159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Hong A, Rose B, Lee S, Jones D, Martin A, Zhang M. P54. Human papillomavirus, smoking and outcomes in tonsillar squamous cell carcinoma. Oral Oncol 2011. [DOI: 10.1016/j.oraloncology.2011.06.297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Lin CE, Chen CT, Kao CM, Hong A, Wu CY. Development of the sediment and water quality management strategies for the Salt-water River, Taiwan. MARINE POLLUTION BULLETIN 2011; 63:528-534. [PMID: 21392809 DOI: 10.1016/j.marpolbul.2011.02.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2010] [Revised: 12/04/2010] [Accepted: 02/04/2011] [Indexed: 05/30/2023]
Abstract
The Salt-water River watershed is one of the major river watersheds in the Kaohsiung City, Taiwan. Water quality and sediment investigation results show that the river water contained high concentrations of organics and ammonia-nitrogen, and sediments contained high concentrations of heavy metals and organic contaminants. The main pollution sources were municipal and industrial wastewaters. Results from the enrichment factor (EF) and geo-accumulation index (Igeo) analyses imply that the sediments can be characterized as heavily polluted in regard to Cd, Cr, Pb, Zn, and Cu. The water quality analysis simulation program (WASP) model was applied for water quality evaluation and carrying capacity calculation. Modeling results show that the daily pollutant inputs were much higher than the calculated carrying capacity (1050 kg day(-1) for biochemical oxygen demand and 420 kg day(-1) for ammonia-nitrogen). The proposed watershed management strategies included river water dilution, intercepting sewer system construction and sediment dredging.
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Xu L, Liu H, Murray B, Callebaut C, Hong A, Vivian R, Lee M, Tsai L, Stray K, Chau J, Strickley R, Koziara J, Choi Y, Rhodes G, Desai M. Discovery of GS-9350: A Novel and Selective Pharmacoenhancer without Anti-HIV Activity. Antiviral Res 2010. [DOI: 10.1016/j.antiviral.2010.02.341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Tsai TT, Kao CM, Hong A. Treatment of tetrachloroethylene-contaminated groundwater by surfactant-enhanced persulfate/BOF slag oxidation--a laboratory feasibility study. JOURNAL OF HAZARDOUS MATERIALS 2009; 171:571-576. [PMID: 19586715 DOI: 10.1016/j.jhazmat.2009.06.036] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2009] [Revised: 06/06/2009] [Accepted: 06/08/2009] [Indexed: 05/28/2023]
Abstract
The main objective of this study was to evaluate the feasibility of remediating tetrachloroethylene (PCE)-contaminated groundwater (with initial PCE concentration of approximately 20 mg L(-1)) via persulfate oxidation activated by basic oxygen furnace slag (S(2)O(8)(2-)/BOF slag) with the addition of biodegradable surfactant (Tween 80). Results indicate that only 15% of PCE can be removed in experiment with the addition of S(2)O(8)(2-) only (S(2)O(8)(2-)/PCE=30/1). PCE removal can be increased to 31% while both S(2)O(8)(2-) and BOF slag (10 g L(-1)) were added. This indicates that BOF slag was able to activate the persulfate oxidation mechanism, and cause the decrease in PCE concentration via oxidation process. Results also reveal that PCE degradation rates increased to 92% with the presence of Tween 80 (S(2)O(8)(2-)/Tween 80/PCE=30/2/1). In the presence of 10 g L(-1) BOF slag, the reaction rate constant (k(obs)) values were found to be 3.1 x 10(-3), 8.7 x 10(-3), 1.6 x 10(-2), and 5.8 x 10(-2)h(-1), as the S(2)O(8)(2-)/Tween 80/PCE molar ratios were 30/0/1, 30/0.5/1, 30/1/1, and 30/2/1, respectively. The reaction rate constant increased as the Tween 80 concentration increased. The significantly increased k(obs) could be caused by the enhanced solubilization of PCE by Tween 80. The increase in initial surfactant concentration would cause the increase in the solubilization of PCE, and thus, enhance the oxidation rate. This was confirmed by the total amount of chloride ions produced after the reaction. Results from this study indicate that BOF slag-activated persulfate oxidation enhanced by surfactant addition is a potential method to efficiently and effectively remediate chlorinated solvents contaminated groundwater.
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Henderson MA, Burmeister B, Thompson JF, Di Iulio J, Fisher R, Hong A, Scolyer R, Shannon K, Hoesktra H, Ainslie J. Adjuvant radiotherapy and regional lymph node field control in melanoma patients after lymphadenectomy: Results of an intergroup randomized trial (ANZMTG 01.02/TROG 02.01). J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.18_suppl.lba9084] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
LBA9084 Background: Adjuvant radiotherapy (RT) is an option for patients with isolated regional recurrence of melanoma considered to be at high risk of further regional recurrence after lymphadenectomy. This is the first completed study to assess the effects of RT on regional recurrence, survival, morbidity and quality of life (QOL) in these patients. Methods: Multicenter randomized study of patients with isolated regional recurrence at increased risk (>25%) of regional recurrence. Eligibile patients included ≥1 parotid, ≥ 2 cervical or axillary or ≥ 3 groin nodes or extra nodal spread of tumor or maximum metastatic node diameter ≥3cm in neck or axilla or ≥4cm in the groin. Patients were randomized to observation or regional nodal basin RT (48Gy in 20 fractions) after lymphadenectomy. Regional recurrence was the primary end point and morbidity, QOL, patterns of relapse, disease free and overall survival were secondary end points. The target sample size was 220 patients, which would enable a difference in 3 year regional relapse (cumulative incidence) rates of 30% versus 15% to be detected with a power of 80% (using a two sided logrank test at the 5% level of significance). Results: 250 pts were randomized from 16 centers from March 2002 to September 2007. There were 123 in the RT group and 127 in OBS group. 2 pts withdrew consent and 31 were excluded from analysis of the main objective following an independent blinded review of eligibility compliance by two reviewers. 227 pts were available for analysis of the main objective (109 RT, 108 OBS). Median follow-up was 27 mo. There was a statistically significant improvement in lymph node field control with radiotherapy, 20 RT pts and 34 OBS pts relapsed (HR 1.77 1.02–3.08 p=0.041). Median survival times were 2.6 years (RT) and 3.9 years (OBS) p=0.14. Conclusions: Adjuvant RT improved regional control in melanoma patients at high risk of regional relapse after lymphadenectomy. An effect on survival was not demonstrated. No significant financial relationships to disclose.
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Henderson MA, Burmeister B, Thompson JF, Di Iulio J, Fisher R, Hong A, Scolyer R, Shannon K, Hoesktra H, Ainslie J. Adjuvant radiotherapy and regional lymph node field control in melanoma patients after lymphadenectomy: Results of an intergroup randomized trial (ANZMTG 01.02/TROG 02.01). J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.lba9084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
LBA9084 The full, final text of this abstract will be available in Part II of the 2009 ASCO Annual Meeting Proceedings, distributed onsite at the Meeting on May 30, 2009, and as a supplement to the June 20, 2009, issue of the Journal of Clinical Oncology. No significant financial relationships to disclose.
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Moore XL, Hong A, Du XJ. α1-Adrenergic Activation Upregulates Expression of Relaxin Receptor RXFP1 in Cardiomyocytes. Ann N Y Acad Sci 2009; 1160:285-6. [DOI: 10.1111/j.1749-6632.2008.03791.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Tsai T, Kao C, Hong A, Liang S, Chien H. Remediation of TCE-contaminated aquifer by an in situ three-stage treatment train system. Colloids Surf A Physicochem Eng Asp 2008. [DOI: 10.1016/j.colsurfa.2008.03.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Tao GZ, Li DH, Zhou Q, Toivola DM, Strnad P, Sandesara N, Cheung RC, Hong A, Omary MB. Monitoring of epithelial cell caspase activation via detection of durable keratin fragment formation. J Pathol 2008; 215:164-74. [DOI: 10.1002/path.2344] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Patel RS, Rose B, Bawdon H, Hong A, Lee CS, Fredericks S, Gao K, O'Brien CJ. Cyclin D1 and p16 expression in pleomorphic adenoma and carcinoma ex pleomorphic adenoma of the parotid gland. Histopathology 2007; 51:691-6. [PMID: 17927591 DOI: 10.1111/j.1365-2559.2007.02853.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
AIMS To compare cyclin D1 and p16(ink4) (p16) expression in normal tissue, pleomorphic adenoma (PA) and carcinoma ex pleomorphic adenoma (CXPA) of the parotid gland. METHODS AND RESULTS Immunohistochemistry was used to examine cyclin D1 and p16 expression in 43 parotid tumours (29 PAs and 14 CXPAs). Cyclin D1 and p16 were both significantly more likely to be expressed in the neoplastic than in the normal epithelial and stromal components of PA and CXPA (P < 0.001 and P < 0.005, respectively). Cyclin D1 was more likely to be expressed in the malignant components of CXPA than in the benign components of PA (50% versus 31% and 31%, respectively), but the trend was not statistically significant. There was no evidence of this association for p16 (corresponding positivity rates 69% versus 81% and 52%). CONCLUSIONS Our findings provide preliminary evidence of roles for cyclin D1 and p16 in the development of PA and for cyclin D1 in the progression of PA to CXPA.
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Patel RS, Hughes CW, Fredericks S, Lee CS, Rose B, Gao K, Smith G, Hong A, O'Brien CJ. Cyclin A expression and its diagnostic value in pleomorphic adenoma and carcinoma expleomorphic adenoma of the parotid gland. Histopathology 2007; 51:21-5. [PMID: 17593077 DOI: 10.1111/j.1365-2559.2007.02729.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AIMS To investigate cyclin A expression in pleomorphic adenoma (PA) and carcinoma expleomorphic adenoma (CXPA) of the parotid gland with a view to assessing its potential value as a diagnostic marker for CXPA. METHODS AND RESULTS Cyclin A expression in PA and CXPA was studied using semiquantitative immunohistochemistry. The epithelial component of the tumours expressed cyclin A in a statistically significantly (P < 0.005) higher number of CXPA cases (86%) compared with the PA cases (39%). Cyclin A was not expressed in normal salivary tissues of PA and CXPA. CONCLUSIONS High cyclin A expression is a useful marker for the pathological diagnosis of CXPA.
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Ruiz-Sáez A, Hong A, Arguello A, Echenagucia M, Boadas A, Fabbrizzi F, Minichilli F, Bosch NB. Pharmacokinetics, thrombogenicity and safety of a double viral inactivated factor IX concentrate compared with a prothrombin complex concentrate. Haemophilia 2006; 11:583-8. [PMID: 16236107 DOI: 10.1111/j.1365-2516.2005.01160.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Therapeutic options for developing countries have to assure an optimum safety and efficacy and low-cost antihaemophilic concentrates. A single blind randomized crossover study was carried out in 12 previously treated HB patients, comparing the pharmacokinetics (PK), thrombogenicity (TG) and safety of two plasma-derived double-inactivated (solvent/detergent heating at 100 degrees C, 30 min) factor IX (FIX) concentrates, UMAN COMPLEX DI (product A) [plasma-derived prothrombin concentrates (PCC)] and a high purity FIX concentrate AIMAFIX DI (product B, HPFIX). In a non-bleeding state, they received one single intravenous dose 50 IU FIX kg(-1) of PCC or HPFIX, and after a wash-out period of 14 days, the other product. We evaluated acute tolerance and determined PK parameters based on FIX levels measured over a 50 h postinfusion period. We studied fibrinogen, platelets, antithrombin, F1 + 2, TAT, D-dimer, over a 360 min postinfusion period. Ten cases remained in on-demand treatment for 6 months, five with PCC and five with HPFIX. PK and anti-FIX inhibitors were repeated at 3 and 6 months. No inhibitors were detected. PK values (PCC vs. HPFIX): clearence (CL; mL h(-1) kg(-1)) 5.2 +/- 1.4 vs. 6.5 +/- 1.4; the volume of distribution at steady state (mL kg(-1)) 154.9 +/- 54.9 vs. 197.5 +/- 72.5; mean residence time (h) 29.7 +/- 8.1 vs. 30.7 +/- 9.2; T(1/2) (h) 22.3 +/- 7 vs. 23.5 +/- 12.3; incremental recovery (IR; U dL(-1) U(-1) kg(-1)) 0.96 +/- 0.17 vs. 0.76 +/- 0.13. HPFIX showed significant lower IR and higher CL. There were no differences in PK at 3 and 6 months. In TG, significant increments in TAT and F1 + 2 at 30 min and 6 h were found with PCC. Product B PK results agrees with reported results for other HPFIX preparations. Use of PCC product A has to consider its thrombogenic activity.
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Woo J, Lynn H, Wong SYS, Hong A, Tang YN, Lau WY, Lau E, Orwoll E, Kwok TCY. Correlates for a low ankle-brachial index in elderly Chinese. Atherosclerosis 2005; 186:360-6. [PMID: 16112118 DOI: 10.1016/j.atherosclerosis.2005.07.022] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2005] [Revised: 07/12/2005] [Accepted: 07/18/2005] [Indexed: 11/16/2022]
Abstract
This study examines the prevalence of atherosclerosis (using ankle-brachial index (ABI) value <0.9) and associated socioeconomic and lifestyle factors in elderly Chinese, adjusting for presence of cardiovascular diseases and body mass index, in a cross-sectional survey of 1999 men and 1999 women aged 65 years and over living in the community. A questionnaire containing information regarding socioeconomic status, medical history and lifestyle factors was administered. Measurement included height, weight, percentage body fat using dual-energy X-ray absorptiometry and ABI. The Hong Kong population (2000) age adjusted prevalence of ABI <0.9 was 5.3% for men and 11.0% for women. In multivariate analysis, old age, female gender, presence of cardiovascular diseases, cognitive impairment, prolonged 6 m walk, smoking habit and alcohol intake were positively associated with ABI <0.9, while negative associations were observed with Vitamin C intake >100 mg per day, with the lowest OR for the range 141-190 mg (OR 0.4). Physical activity level, and self rated higher social standing in the community, while significant in univariate analysis, were not included as independent significant factors in the multivariate model. Lifestyle factors and the female gender were independent risk factors for atherosclerosis in the elderly Chinese population.
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Wardley A, Davidson N, Barrett-Lee P, Hong A, Mansi J, Dodwell D, Murphy R, Mason T, Cameron D. Zoledronic acid significantly improves pain scores and quality of life in breast cancer patients with bone metastases: a randomised, crossover study of community vs hospital bisphosphonate administration. Br J Cancer 2005; 92:1869-76. [PMID: 15870721 PMCID: PMC2361764 DOI: 10.1038/sj.bjc.6602551] [Citation(s) in RCA: 122] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Patients with bone metastases from breast cancer often experience substantial skeletal complications – including debilitating bone pain – which negatively affect quality of life. Zoledronic acid (4 mg) has been demonstrated to reduce significantly the risk of skeletal complications in these patients and is administered via a short, 15-min infusion every 3 weeks, allowing the possibility for home administration. This study compared the efficacy and safety of zoledronic acid administered in the community setting vs the hospital setting in breast cancer patients with ⩾1 bone metastasis receiving hormonal therapy. After a lead-in phase of three infusions of 4 mg zoledronic acid in the hospital setting, 101 patients were randomized to receive three open-label infusions in the community or hospital setting, followed by three infusions in the opposite venue (a total of nine infusions). The Brief Pain Inventory (BPI) and the European Organisation for Research and Treatment of Cancer Quality of Life Core Questionnaire 30 (EORTC QLQ-C30) were used to assess potential benefits of zoledronic acid therapy. At study end, analysis of the BPI showed significant reductions in worst pain (P=0.008) and average pain in the last 7 days (P=0.039), and interference with general activity (P=0.012). In each case, there were significantly greater improvements in pain scores after treatment in the community setting compared with the hospital crossover setting for worst pain (P=0.021), average pain (P=0.003), and interference with general activity (P=0.001). Overall global health status showed a significant median improvement of 8.3% (P=0.013) at study end. Physical, emotional, and social functioning also showed significant overall improvement (P=0.013, 0.005, and 0.043, respectively). Furthermore, physical, role, and social functioning showed significantly greater improvements after treatment in the community setting compared with the hospital crossover setting (P=0.018, 0.001, and 0.026, respectively). There was no difference between hospital and community administration in renal or other toxicity, with zoledronic acid being well tolerated in both treatment settings. These data confirm the safety and quality-of-life benefits of zoledronic acid in breast cancer patients with bone metastases, particularly when administered in the community setting.
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Chua S, Smith IE, A'Hern RP, Coombes GA, Hickish TF, Robinson AC, Laing RW, O'Brien MER, Ebbs SR, Hong A, Wardley A, Mughal T, Verrill M, Dubois D, Bliss JM. Neoadjuvant vinorelbine/epirubicin (VE) versus standard adriamycin/cyclophosphamide (AC) in operable breast cancer: analysis of response and tolerability in a randomised phase III trial (TOPIC 2). Ann Oncol 2005; 16:1435-41. [PMID: 15946977 DOI: 10.1093/annonc/mdi276] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Vinorelbine is active and well tolerated against advanced breast cancer but there are no published efficacy studies in early breast cancer. We have therefore carried out a randomised phase III neoadjuvant trial in operable breast cancer. PATIENTS AND METHODS Patients with > or =3 cm operable breast carcinoma were randomised to receive either vinorelbine 25 mg/m(2) on days 1 and 8 and epirubicin 60 mg/m(2) on day 1, 3 weekly for six cycles (VE) or doxorubicin 60 mg/m(2) and cyclophosphamide 600 mg/m(2) i.v. on day 1, 3 weekly for six cycles (AC), prior to standard local therapy, and adjuvant endocrine therapy as appropriate. RESULTS A total of 451 patients were randomised. Results for AC and VE, respectively, were: overall clinical response 73% and 74%, complete clinical remission 20% and 24%, pathological complete remission 12% and 12%, mastectomy rate 52% and 55%. None of these differences were significant. Dose reduction was required in 8% for AC and 20% for VE (P <0.001) (GSCF support not used). Significantly more grade 3/4 toxicity for nausea, vomiting and alopecia (despite scalp cooling) was seen for AC compared with VE but significantly less grade 3/4 thrombophlebitis and neuropathy. CONCLUSIONS Neoadjuvant VE is as effective as AC in early breast cancer and was better tolerated except for thrombophlebitis and neuropathy.
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Davidson AW, Hong A, McCarthy SW, Stalley PD. En-bloc resection, extracorporeal irradiation, and re-implantation in limb salvage for bony malignancies. ACTA ACUST UNITED AC 2005; 87:851-7. [PMID: 15911672 DOI: 10.1302/0301-620x.87b6.15950] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
We treated 50 patients with bony malignancy by en-bloc resection, extracorporeal irradiation with 50 Gy and re-implantation of the bone segment. The mean survivor follow-up was 38 months (12 to 92) when 42 patients were alive and without disease. There were four recurrences. The functional results were good according to the Mankin score (17 excellent, 13 good, nine fair, three failures), the Musculoskeletal Tumour Society score (mean 77) and the Toronto Extremity Salvage score (mean 81). There was solid union, but bone resorption was seen in some cases. The dose of radiation was lethal to all cells and produced a dead autograft of perfect fit. Extracorporeal irradiation is a useful technique for limb salvage when there is reasonable residual bone stock. It allows effective re-attachment of tendons and produces a lasting biological reconstruction. There should be no risk of local recurrence or of radiotherapy-induced malignancy in the replanted bone.
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Bunnapradist S, Hong A, Lee B, Takemoto SK. Multivariate Analysis of the Effectiveness of Using Antibody Induction Therapy According to the Degree of HLA Mismatches. Transplant Proc 2005; 37:886-8. [PMID: 15848565 DOI: 10.1016/j.transproceed.2004.12.084] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
OBJECTIVE HLA mismatches have a strong impact on acute rejection and renal allograft survival. The objective of this study was to evaluate the effectiveness of antibody induction according to the degree of HLA mismatches. METHODS Of 20,429 deceased donor (DD) transplantations and 12,859 living donor (LD) transplantations reported to the United Network for Organ Sharing (UNOS) between 1999 and 2001, 51% of DD and 45% of LD transplant recipients received induction therapy. Propensity scores (PS) were calculated to indicate independent factors associated with the use of induction. Levels of HLA match examined for DD transplant recipients were 0 ABDR (n = 3239), 0 DR (n = 4210), and DR mismatched transplants (n = 12,980), and 0 (n = 1133), 1 (n = 3836), and 2 (n = 7890) haplotype mismatches for LD transplant recipients. Outcome parameters were reported as hazard ratios (HR) for graft loss and odds ratios (OR) for first-year acute rejection. RESULTS Recipients with HLA mismatches were more likely to receive induction antibody for DR mismatch in DDs (PS = 1.11, 95% confidence interval [CI] 1.04-1.19) and for haplotype mismatch in LDs (PS = 1.36, 95% CI 1.22-1.52). Induction reduced the likelihood of acute rejection for DD transplant recipients regardless of the level of HLA mismatch (OR = 0.70; 95% CI 0.57-0.85 in 0 ABDR MM; OR = 0.76, 95% CI 0.64-0.89 in 0 DR MM; and OR = 0.69, 95% CI 0.62-0.77 in DR MM), and for 2 haplotype mismatched LD transplant recipients (OR = 0.82, 95% CI 0.70-0.96); in other LD transplant recipients, reductions in acute rejection rates were observed but not statistically significant. Induction reduced the risk of graft loss for DR mismatched DD transplant recipients by about 12% (HR = 0.88; 95% CI 0.80-0.97). CONCLUSIONS Antibody induction resulted in a significant reduction of acute rejection and graft loss for patients with HLA mismatch.
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Tan HW, Ty A, Goh SGN, Wong MC, Hong A, Chuah KL. Pineal yolk sac tumour with a solid pattern: a case report in a Chinese adult man with Down's syndrome. J Clin Pathol 2004; 57:882-4. [PMID: 15280413 PMCID: PMC1770394 DOI: 10.1136/jcp.2004.016659] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Intracranial germ cell tumours are rare. The incidence of primary intracranial yolk sac tumour is even more uncommon, with only two reported cases being associated with Down's syndrome in the English literature. This report details the findings of yolk sac tumour in the pineal region affecting a 22 year old Chinese man with Down's syndrome. Histology revealed yolk sac tumour with only a solid pattern, potentially mimicking the more common germinoma in the pineal region. No other germ cell components were identified. This is the third report of intracranial yolk sac tumour manifesting in a patient with trisomy 21. The pathology of this tumour and its differential diagnoses are discussed.
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Abstract
The posterior sagittal, transphincteric approach to treat different pelvic problems has been known since last century. Although some surgeons have embraced it and have enthusiastically advocated it s use, it has never become an overly popular technique. The purpose of this study is to evaluate the advantages and disadvantages of the approach, both from an historical perspective and from the authors experience. The international literature on the subject was reviewed since 1877 up to the present date. A retrospective evaluation of the authors experience was conducted, and the results reviewed. Specific attention was paid to the final result obtained in the treatment of the original condition, surgical complications and the effect of the surgical approach on bowel and urinary control. The experiential review included 114 cases. They were divided into two groups. A included 85 patients who underwent a posterior sagittal transphincteric approach that included 49 cases of Hirschsprung s disease (primary 21, secondary 28), 15 presacral masses; 10 rectaltumors; 7 acquired rectogenito- urinary fistulae; and 4 cases of idiopathic rectal prolapse. Group B included 29 patients who underwent a posterior sagittal trans-anorectal approach, in which theanterior wall of the rectum and the sphincter was divided as well.. This group included 12 cases of urogenital sinuses; 8 acquired urethral stricture or atresia after trauma; and 9 posterior urethralmasses. Post-operative bowel control was normal all cases except in those patients whose basiccondition had resulted in fecal incontinence, or who had sustained an irreversible injury prior tothe operation. Urinary control was normal except in cases with pre-operative incontinence. Complications included recurrence ofrecto-genitourinary fistulae in 3 cases, recto-cutaneous fistula in 3 Hirschsprung s patients and 2 partial wound dehisences. The posterior sagittal trans-sphincteric approach represents a useful technical alternative. It seems to be particularly useful to treat complications after surgery for Hirschsprung s disease, pre-sacral masses, acquired recto-genito-urinary fistula and idiopathic rectal prolapse. Thetransanorectal approach provides excellent exposure to the posterior urethra and vagina. Boweland urinary control are not compromised.
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Abstract
BACKGROUND The posterior sagittal, transphincteric approach to treat different pelvic problems has been known since the last century. Although some surgeons have embraced it and have enthusiastically advocated it's use, it has never become an overly popular technique. The purpose of this study is to evaluate the advantages and disadvantages of the approach, both from a historical perspective and from the authors' experience. METHODS The international literature on the subject was reviewed since 1877 up to the present date. A retrospective evaluation of the authors' experience was conducted. Specific attention was paid to the final result obtained in the treatment of the original condition, surgical complications and the effect of the surgical approach. on bowel and urinary control. RESULTS The review included 114 patients divided into two groups. Group A included 85 patients who underwent a posterior sagittal trans-sphincteric approach. Group B included 29 patients who underwent a posterior sagittal transanorectal approach, in which the anterior wall of the rectum and the sphincter were divided. Postoperative bowel control was normal in all patients except in those whose basic condition had resulted in fecal incontinence, or who had sustained an irreversible injury prior to the operation. Urinary control was normal except in cases with pre-operative incontinence. Complications included recurrence of rectogenito-urinary fistulae in 3 cases, rectocutaneous fistula in 3 patients with Hirschsprung's disease, and 2 partial wound dehisences. CONCLUSIONS The posterior sagittal trans-sphincteric approach represents a useful technical alternative. It seems to be particularly useful to treat complications after surgery for Hirschsprung's disease, presacral masses, acquired rectogenito-urinary fistulae and idiopathic rectal prolapse. The transanorectal approach provides excellent exposure to the posterior urethra and vagina. Bowel and urinary control are not compromised.
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74
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Tan EK, Lo YL, Chan LL, See SJ, Hong A, Wong MC. Cervical disc prolapse with cord compression presenting with choreoathetosis and dystonia. Neurology 2002; 58:661-2. [PMID: 11865154 DOI: 10.1212/wnl.58.4.661] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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75
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Abstract
The human herpesvirus 8 (HHV8) was initially described and characterised in Kaposi's sarcoma tissue. The virus was found in the lesion of most cases of Kaposi's sarcoma. Whilst there is a large body of evidence to implicate its role in the pathogenesis of Kaposi's sarcoma, it has recently been found that the virus may also be important in a number of other human neoplasias. This review will examine the molecular pathology of HHV8 in the pathogenesis of Kaposi's sarcoma and summarise the current evidence and postulated mechanisms in its role in other human neoplasias.
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