151
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Kang Y, Rho J, Seo H, Park K, Kim K, Lim D, Kim C. UP-2.053: The Index Finger and Ring Finger Ratio (2D:4D): Is This a Reliable Predictor of Semen Quality? Urology 2009. [DOI: 10.1016/j.urology.2009.07.272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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152
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Kang Y, Rho J, Lim D, Seo H, Kim C. UP-3.140: Metabolic Syndrome as a Risk Factor for Renal Stone Disease. Urology 2009. [DOI: 10.1016/j.urology.2009.07.145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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153
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Das K, Lorena P, Lim D, Shen L, Siow W, Teh M, Salto-Tellez M. MP-15.01: Differential Expression of Steroid 5α- Reductase Isozymes I & II and Their Association with Androgen Receptor, Vascular Endothelial Growth Factor & Serum Prostate Specific Antigen Level Predict Their Biological Role in Prostate Cancer. Urology 2009. [DOI: 10.1016/j.urology.2009.07.835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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154
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Chalasani V, Tawfeek M, Lim D, Martinez C, Chin J. POD-02.02: Screen-detected Prostate Cancer: Do They Have More Favourable Pathological Features After Radical Prostatectomy? Urology 2009. [DOI: 10.1016/j.urology.2009.07.1196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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155
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Kim S, Lee J, Park S, Park Y, Lim H, Kang W, Choi S, Choi D, Lim D, Park J. 6592 Prognostic model to predict outcomes in pancreatic adenocarcimoma patients who received surgical resection with curative intent. EJC Suppl 2009. [DOI: 10.1016/s1359-6349(09)71313-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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156
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Lim D, Lee D, Park D, Park D, Park D, Lim D, Kang D. 6533 A retrospective study of first-line platinum-based combination chemotherapy in patients with recurrent and advanced gastric cancer. EJC Suppl 2009. [DOI: 10.1016/s1359-6349(09)71255-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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157
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Kim SH, Shin JH, Han K, Baek S, Sung J, Hyon M, Lim D, Ahn Y, Kim Y, Kim D, Choi Y, Park C, Kim HS. Abstract: P1186 PROSPECTIVE RANDOMIZED MULTICENTER COMPARISON OF ROSUVASTATIN AND ATORVASTATIN IN ASIAN PATIENTS WITH METABOLIC SYNDROME AND INCREASED LOW DENSITY LIPOPROTEIN CHOLESTEROL LEVEL. ATHEROSCLEROSIS SUPP 2009. [DOI: 10.1016/s1567-5688(09)71213-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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158
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Yi S, Kim HS, Lee J, Park S, Park Y, Lim H, Kang W, Park H, Lim D, Park JO. Definitive chemoradiation therapy with capecitabine in locally advanced pancreatic cancer. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.e15558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
e15558 Background: We evaluated safety and efficacy of concurrent chemoradiotherapy (CCRT) with capecitabine in patients with locally advanced pancreatic cancer (LAPC). We also tried to devise a prognostic model for LAPC undergoing definitive CCRT. Methods: Between January 2004 and January 2008, 39 patients with LAPC treated with capecitabine CCRT were reviewed. Capecitabine was administered at 850 mg/m2 bid every day for 5 weeks. Radiotherapy was given 5 days per week, at 1.8 Gy fractions, over the 5 weeks. Results: Thirty seven (94.8%) patients completed CCRT, and 2 patients removed during the treatment for toxicity issues. Of the 36 evaluable patients, 15 (41.7 %) patients achieved partial response, and 13 (36.1 %) had a stable disease with 77.8% of disease control rate. Among the 28 patients who had achieved disease control after CCRT, 8 patients (21.6 %) received gemcitabine-based post-CCRT chemotherapy without dose reduction or delay. With median 1.8 years of follow- up, the overall survival was 14.3 months (95% confidence interval [CI]; 10.6–17.9 months). Median progression free survival was 11.1 (95% CI 7.2–15.1) for all patients, and 7.9 months (95% CI 6.6–9.2) for those not received post-CCRT chemotherapy. No patient had grade 4 hematologic or non-hematologic toxicity. Eight patients (21.6%) had severe grade 3 toxicities, 7 (18.9%) with gastrointestinal toxicity and 1 (2.7%) with hematologic toxicity. Prognostic factors for survival were serum albumin (P=0.014; relative risk [RR], 3.4; 95% CI, 1.4, 8.6), and adjuvant gemcitabine treatment (P = 0.005; RR, 3.5; 95% CI, 1.2, 10.6). The prognostic grouping resulted in three groups with significantly different prognosis: group 1 (0 adverse factor; n=8; 1-year survival, 87.5%), group 2 (1 adverse factor; n=23; 1-year survival, 52.9%) and group 3 (2 adverse factors; n=8; 1-year survival, 25.0%). Conclusions: Combined therapy with capecitabine CCRT was well tolerated. Capecitabine seems to be a promising regimen in the treatment of LAPC, in terms of response, survival, and tolerable adverse effects. No significant financial relationships to disclose.
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Affiliation(s)
- S. Yi
- Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea; Samsung Medical Center, Seoul, Republic of Korea
| | - H. S. Kim
- Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea; Samsung Medical Center, Seoul, Republic of Korea
| | - J. Lee
- Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea; Samsung Medical Center, Seoul, Republic of Korea
| | - S. Park
- Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea; Samsung Medical Center, Seoul, Republic of Korea
| | - Y. Park
- Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea; Samsung Medical Center, Seoul, Republic of Korea
| | - H. Lim
- Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea; Samsung Medical Center, Seoul, Republic of Korea
| | - W. Kang
- Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea; Samsung Medical Center, Seoul, Republic of Korea
| | - H. Park
- Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea; Samsung Medical Center, Seoul, Republic of Korea
| | - D. Lim
- Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea; Samsung Medical Center, Seoul, Republic of Korea
| | - J. O. Park
- Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea; Samsung Medical Center, Seoul, Republic of Korea
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159
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Lee J, Kang W, Lim D, Park J, Park Y, Lim H, Sohn T, Noh J, Bae J, Kim S. Phase III trial of adjuvant capecitabine/cisplatin (XP) versus capecitabine/cisplatin/RT (XPRT) in resected gastric cancer with D2 nodal dissection (ARTIST trial): Safety analysis. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.4537] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
4537 Background: Although the adjuvant chemoradiation therapy has gained popularity and has become the standard of care in patients with resected gastric cancer in U.S., the role of chemoradiation therapy after extended D2 dissection has been questioned. We conducted a phase III trial to compare capecitabine/cisplatin (XP) vs XP + radiotherapy (RT) in curatively D2 resected gastric cancer patients in terms of disease free survival and overall survival. Methods: Eligibility criteria were as follows: stage Ib (T1N1, T2bN0) - IV (M1 excluded), curatively ≥ D2 resected gastric adenocarcinoma. XP only: X 2,000 mg/m2/d D1∼14, CDDP 60 mg/m2 D1 repeated every 3 weeks, 6 cycles; XP + RT: X 2,000 mg/m2/d D1∼14, CDDP 60 mg/m2 D1 x 2 cycles ⋄ RT 45 Gy (25 fractions) + X 1,650 mg/m2/d during RT ⋄ X 2,000 mg/m2/d D1∼14, CDDP 60 mg/m2 D1 x 2 cycles. The primary endpoint is 3-year disease-free survival. Results: From October 2004 to April 2008, 458 patients (XP arm: 228 patients; XP/RT arm: 230 patients) were enrolled. In XP arm, 172 (75%) of 228 enrolled patients completed 6 cycles of chemotherapy. In XP + RT arm, 188 (82%) of 230 patients completed the full course of XP 2 cycles - X + RT - XP 2 cycles. Conclusions: Safety and feasibility analysis of the two arms will be reported at the meeting. No significant financial relationships to disclose.
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Affiliation(s)
- J. Lee
- Samsung Medical Center, Seoul, Republic of Korea
| | - W. Kang
- Samsung Medical Center, Seoul, Republic of Korea
| | - D. Lim
- Samsung Medical Center, Seoul, Republic of Korea
| | - J. Park
- Samsung Medical Center, Seoul, Republic of Korea
| | - Y. Park
- Samsung Medical Center, Seoul, Republic of Korea
| | - H. Lim
- Samsung Medical Center, Seoul, Republic of Korea
| | - T. Sohn
- Samsung Medical Center, Seoul, Republic of Korea
| | - J. Noh
- Samsung Medical Center, Seoul, Republic of Korea
| | - J. Bae
- Samsung Medical Center, Seoul, Republic of Korea
| | - S. Kim
- Samsung Medical Center, Seoul, Republic of Korea
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160
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Lim D, Bowdin SC, Tee L, Kirby GA, Blair E, Fryer A, Lam W, Oley C, Cole T, Brueton LA, Reik W, Macdonald F, Maher ER. Clinical and molecular genetic features of Beckwith-Wiedemann syndrome associated with assisted reproductive technologies. Hum Reprod 2008; 24:741-7. [DOI: 10.1093/humrep/den406] [Citation(s) in RCA: 173] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
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161
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Chin J, Lim D, Abdelhady M, Downey D, Izawa J. POD-5.11: Predictors and Pathological Features of Prostate Cancer on Repeat Biopsy with High-grade Prostatic Intraepithelial Neoplasia (HPIN) and/or Atypical Small Acinar Proliferation (ASAP). Urology 2008. [DOI: 10.1016/j.urology.2008.08.112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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162
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Fedrizzi L, Lim D, Carafoli E, Brini M. Interplay of the Ca2+-binding Protein DREAM with Presenilin in Neuronal Ca2+ Signaling. J Biol Chem 2008; 283:27494-27503. [DOI: 10.1074/jbc.m804152200] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
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163
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Seong J, Lee I, Shim S, Lim D, Kim T, Kim J, Jang H, Kim M, Chie E, Kim J. Patterns of Care Study on Radiotherapy for Locally Advanced Hepatocellular Carcinoma (HCC). Int J Radiat Oncol Biol Phys 2008. [DOI: 10.1016/j.ijrobp.2008.06.1729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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164
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Chung VM, Ruel C, Cristea M, Luu TH, Leong L, McNamara M, Martel C, Lim D, Twardowski P, Morgan RJ. Randomized pilot trial of oral cyclophosphamide versus oral cyclophosphamide with celecoxib for recurrent or persistent epithelial ovarian, fallopian tube or primary peritoneal cancer: preliminary data. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.16555] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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165
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Luu TH, Chow WA, Lim D, Koczywas M, Frankle P, Cristea M, Somlo G, Morgan RJ. Phase I of fixed-dose-rate gemcitabine in combination with bortezomib in patients with advanced solid tumors. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.2563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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166
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Abstract
Cell signaling is an essential process in which a variety of external signals, defined as first messengers, are translated inside the cells into specific responses, which are mediated by a less numerous group of second messengers. The exchange of signals became a necessity when the transition from monocellular to pluricellular life brought with it the division of labor among the cells of the organisms: unicellular organisms do not depend on the mutual exchange of signals, as they essentially only compete with each other for nutrients. Calcium (Ca²⁺) was selected during evolution as second messenger, because its chemistry made it a much more flexible ligand than the other abundant cations in the primordial environment (Na⁺, K⁺, Mg²⁺ ). Ca²⁺ can accept binding sites of irregular geometries and is thus ideally suited to be a carrier of biological information. The Ca²⁺ signal has properties that set it apart from those of all other biological messengers: they will be reviewed in this contribution. Among them, the ambivalent character of the Ca²⁺ signal is the most important: while essential to the viability of the cells, it can also easily become a conveyor of doom.
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Affiliation(s)
- Laura Fedrizzi
- Department of Biochemistry, University of Padova, 35131 Padova, Italy.
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167
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Kim S, Kim H, Sung J, Han K, Kim Y, Baek S, Lim D, Choi D, Ahn Y, Choi S. CHANGES OF TREATMENT GAP IN THE MANAGEMENT OF HYPERCHOLESTEROLEMIA IN THE PATIENTS WITH CORONARY HEART DISEASE. ATHEROSCLEROSIS SUPP 2008. [DOI: 10.1016/s1567-5688(08)70780-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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168
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Di Leva F, Domi T, Fedrizzi L, Lim D, Carafoli E. The plasma membrane Ca2+ ATPase of animal cells: structure, function and regulation. Arch Biochem Biophys 2008; 476:65-74. [PMID: 18328800 DOI: 10.1016/j.abb.2008.02.026] [Citation(s) in RCA: 192] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2008] [Revised: 02/15/2008] [Accepted: 02/17/2008] [Indexed: 12/19/2022]
Abstract
Most important processes in cell life are regulated by calcium (Ca2+). A number of mechanisms have thus been developed to maintain the concentration of free Ca2+ inside cells at the level (100-200nM) necessary for the optimal operation of the targets of its regulatory function. The systems that move Ca2+ back and forth across membranes are important actors in its control. The plasma membrane calcium ATPase (PMCA pump) which ejects Ca2+ from all eukaryotic cell types will be the topic of this contribution. The pump uses a molecule of ATP to transport one molecule of Ca2+ from the cytosol to the external environment. It is a P-type ATPase encoded by four genes (ATP2B1-4), the transcripts of which undergo different types of alternative splicing. Many pump variants thus exist. Their multiplicity is best explained by the specific Ca2+ demands in different cell types. In keeping with these demands, the isoforms are differently expressed in tissues and cell types and have differential Ca2+ extruding properties. At very low Ca2+ concentrations the PMCAs are nearly inactive. They must be activated by calmodulin, by acid phospholipids, by protein kinases, and by other means, e.g., a dimerization process. Other proteins interact with the PMCAs (i.e., MAGUK and NHERF at the PDZ domain and calcineurin A in the main intracellular domain) to sort them to specific regions of the cell membrane or to regulate their function. In some cases the interaction is isoform, or even splice variant specific. PMCAs knock out (KO) mice have been generated and have contributed information on the importance of PMCAs to cells and organisms. So far, only one human genetic disease, hearing loss, has been traced back to a PMCA defect.
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Affiliation(s)
- Francesca Di Leva
- Department of Biochemistry, University of Padova, Viale G. Colombo, 3 35131 Padova, Italy
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169
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Lim D, Fedrizzi L, Tartari M, Zuccato C, Cattaneo E, Brini M, Carafoli E. Calcium homeostasis and mitochondrial dysfunction in striatal neurons of Huntington disease. J Biol Chem 2007; 283:5780-9. [PMID: 18156184 DOI: 10.1074/jbc.m704704200] [Citation(s) in RCA: 147] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Dysfunctions of Ca2+ homeostasis and of mitochondria have been studied in immortalized striatal cells from a commonly used Huntington disease mouse model. Transcriptional changes in the components of the phosphatidylinositol cycle and in the receptors for myo-inositol trisphosphate-linked agonists have been found in the cells and in the striatum of the parent Huntington disease mouse. The overall result of the changes is to delay myo-inositol trisphosphate production and to decrease basal Ca2+ in mutant cells. When tested directly, mitochondria in mutant cells behave nearly normally, but are unable to handle large Ca2+ loads. This appears to be due to the increased Ca2+ sensitivity of the permeability transition pore, which dissipates the membrane potential, prompting the release of accumulated Ca2+. Harmful reactive oxygen species, which are produced by defective mitochondria and may in turn stress them, increase in mutant cells, particularly if the damage to mitochondria is artificially exacerbated, for instance with complex II inhibitors. Mitochondria in mutant cells are thus peculiarly vulnerable to stresses induced by Ca2+ and reactive oxygen species. The observed decrease of cell Ca2+ could be a compensatory attempt to prevent the Ca2+ stress that would irreversibly damage mitochondria and eventually lead to cell death.
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Affiliation(s)
- Dmitry Lim
- Venetian Institute of Molecular Medicine, Via Orus 2, 35129 Padua, Italy
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170
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Chen Y, Kernstine K, Shibata S, Lim D, Smith D, Liu A, Schultheiss T, Pezner R, Wong J. Initial Experience With Helical Tomotherapy for Locally Advanced Esophageal Cancer by Concomitant Boost Strategy. Int J Radiat Oncol Biol Phys 2007. [DOI: 10.1016/j.ijrobp.2007.07.1364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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171
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Luu TH, Leong L, Morgan R, McNamara M, Lim D, Portnow J, Frankel P, Aparicio A, Chew H, Gandara DR, Somlo G. Vorinostat (suberoylanilide hydroxamic acid) as salvage therapy in metastatic breast cancer (MBC): A California Cancer Consortium phase II study. J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.11502] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
11502 Background: MBC patients (pts) have a median survival of 27 mo. Vorinostat is a small molecule inhibitor of histone deacetylase that exerts its targeted action during post-translational acetylation of core nucleosomal histones, affecting chromatin structure, thereby regulating genes implicated in cell survival, proliferation, differentiation, and apoptosis. The primary end point was to evaluate the response rate. Secondary endpoints included: time to progression, overall survival, toxicity, and assessment of biologic correlates. Method: From 6/05 to 3/06, we enrolled 14 pts with measurable MBC. Response and progression were evaluated using RECIST criteria. Two pts had no, 5 pts had one, and 7 pts had two prior regimens. Median age was 60.5 years (37- 89). Six were ER/PR positive, four were Her2neu overexpressers. Sites of metastatic disease included brain (1), liver, lungs, and bone (5), pelvic and chest wall (1), liver and bone (2), distant lymph nodes (3), pleura and bone (1). Pts received Vorinostat 200mg oral twice daily for 14 of 21 days per cycle. Tumor measurements were performed after every 2 cycles. Biopsies (pre and on-treatment) were collected from 6 of 14 pts. Results: The mean cycles delivered was 5 (range: 1–18). Four pts had SD for a median of >8.7 mo (4–13 mo); 1 pt with ER/PR/Her2neu negative tumor who received no prior treatment for MBC to mediastinal nodes and chest wall continues to receive treatment having completed cycle 18 with stable disease for >11.4 mo. The median duration on treatment for all pts is 3.2 mo (1–12 mo). Toxicities included gr 3 fatigue (1), gr 2–3 diarrhea (3), gr 2–3 nausea (2), gr 2 mucositis(1), gr 4 lymphopenia (1), gr 2–3 lymphopenia (6). Correlative studies of pre- and on-treatment tumor samples will be presented describing gene expression profiling using custom Agilent oligonucleotide microarrays optimized for analysis of RNA isolated from formalin fixed paraffin embedded tissues (FFPET). Conclusion: In this trial Vorinostat demonstrated disease stabilization rate in 4/14 (29%) pts by intention to treat analysis. With ease of administration, further investigation in combination with other agents is warranted. (NCI-NO1-CM- 62209) No significant financial relationships to disclose.
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Affiliation(s)
- T. H. Luu
- City of Hope National Medical Center, Duarte, CA; USC/Norris Cancer Center, Los Angeles, CA; UC Davis Cancer Center, Sacramento, CA
| | - L. Leong
- City of Hope National Medical Center, Duarte, CA; USC/Norris Cancer Center, Los Angeles, CA; UC Davis Cancer Center, Sacramento, CA
| | - R. Morgan
- City of Hope National Medical Center, Duarte, CA; USC/Norris Cancer Center, Los Angeles, CA; UC Davis Cancer Center, Sacramento, CA
| | - M. McNamara
- City of Hope National Medical Center, Duarte, CA; USC/Norris Cancer Center, Los Angeles, CA; UC Davis Cancer Center, Sacramento, CA
| | - D. Lim
- City of Hope National Medical Center, Duarte, CA; USC/Norris Cancer Center, Los Angeles, CA; UC Davis Cancer Center, Sacramento, CA
| | - J. Portnow
- City of Hope National Medical Center, Duarte, CA; USC/Norris Cancer Center, Los Angeles, CA; UC Davis Cancer Center, Sacramento, CA
| | - P. Frankel
- City of Hope National Medical Center, Duarte, CA; USC/Norris Cancer Center, Los Angeles, CA; UC Davis Cancer Center, Sacramento, CA
| | - A. Aparicio
- City of Hope National Medical Center, Duarte, CA; USC/Norris Cancer Center, Los Angeles, CA; UC Davis Cancer Center, Sacramento, CA
| | - H. Chew
- City of Hope National Medical Center, Duarte, CA; USC/Norris Cancer Center, Los Angeles, CA; UC Davis Cancer Center, Sacramento, CA
| | - D. R. Gandara
- City of Hope National Medical Center, Duarte, CA; USC/Norris Cancer Center, Los Angeles, CA; UC Davis Cancer Center, Sacramento, CA
| | - G. Somlo
- City of Hope National Medical Center, Duarte, CA; USC/Norris Cancer Center, Los Angeles, CA; UC Davis Cancer Center, Sacramento, CA
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172
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Lim D, Seliktar R, Farrell E, Tom J, Nunes L, Sun W, Wee J. Loading conditions and bone formation in the GH region of the shoulder. Conf Proc IEEE Eng Med Biol Soc 2007; 2004:5092-5. [PMID: 17271463 DOI: 10.1109/iembs.2004.1404407] [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] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The present study investigates how loading of the shoulder effect the formation of the trabeculae in the subarticular region of the gleno-humeral joint. Bone morphology was determined from scapular cadaveric specimens and finite element (FE) analysis was employed to analyse principal stress trajectories. Boundary conditions corresponded to five functional activities were considered. The results show deviations of the computed trajectories from actual trabecular lines obtained from the bone specimens ranged on average from 10% to 17%. Each activity produced different regional deviation corresponding to the specific loading condition. This study concludes that certain loading conditions are more significant in explaining the formation of the trabecular architecture. The results also suggest that due to the extra sensitivity of the front and the rear aspects of the "lateral region" to the loading conditions, these regions may be more indicative in reflecting shoulder injuries.
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Affiliation(s)
- D Lim
- School of Biomed. Engineering, Drexel University, Philadelphia, PA, USA
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173
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Abstract
Abstract Hydrazine is a hazardous chemical commonly used as a reactant in rocket and jet fuel cells. Animal studies have demonstrated hepatic changes after hydrazine inhalation. Human case reports of hydrazine inhalation hepatotoxicity are rare. We report a case of mild hepatotoxicity following brief hydrazine vapour inhalation in a healthy young man, which resolved completely on expectant management.
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Affiliation(s)
- Yung Hsiang Kao
- Singapore Health Services, 7 Hospital Drive Blk B, #02-15, Singapore 169611, Singapore.
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174
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176
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Kwak K, Kim J, Park S, Lim D, Kim S, Baek W, Jeon Y. Reduction of pain on injection of propofol: combination of pretreatment of remifentanil and premixture of lidocaine with propofol. Eur J Anaesthesiol 2007; 24:746-50. [PMID: 17261216 DOI: 10.1017/s026502150600233x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUNDS AND OBJECTIVE There is a high incidence of pain following intravenous injection of propofol, and many studies have been conducted to find a way of reducing this. The administration of lidocaine and, recently, remifentanil has also been used for this purpose, but it is only partially effective. Thus, the purpose of this study was to investigate the analgesic effect of a combination of pretreatment with remifentanil and premixture of lidocaine with propofol and to compare either treatment alone during propofol injection in dorsal hand-veins. METHODS In a prospective, randomized, double-blinded trial, we studied 141 adult patients scheduled for elective surgery. The combination of pretreatment of remifentanil (0.35 microg kg(-1) min(-1)) and a premixture of lidocaine with propofol (mixture of propofol 1% and lidocaine 1% in a 10:1 ratio) was compared with either treatment alone in the prevention of pain on propofol injection. Pain was assessed on a four-point scale (0=none, 1=mild, 2=moderate, 3=severe) during propofol injection. Patients in Group B received remifentanil (0.35 microg kg(-1) min(-1)) 30 s before the injection of propofol. RESULTS The reduction of pain on propofol injection was similar in both the remifentanil pretreatment and lidocaine premixture groups (62.2% vs. 62.2%). Combination therapy was associated with a higher incidence of patients without pain (91.3%) than either treatment alone (P<0.001). On analysing the injection pain scores, we found a significant reduction of the score in the remifentanil and lidocaine Group C compared with the lidocaine Group A (P<0.001) and the remifentanil Group B (P<0.001). CONCLUSIONS The combination of pretreatment of remifentanil and premixture of lidocaine with propofol was more effective in reducing the incidence of pain on injection of propofol than either treatment alone.
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Affiliation(s)
- K Kwak
- Kyungpook National University, School of Medicine, Department of Anesthesiology, Daegu, South Korea
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Ficarella R, Di Leva F, Bortolozzi M, Ortolano S, Donaudy F, Petrillo M, Melchionda S, Lelli A, Domi T, Fedrizzi L, Lim D, Shull GE, Gasparini P, Brini M, Mammano F, Carafoli E. A functional study of plasma-membrane calcium-pump isoform 2 mutants causing digenic deafness. Proc Natl Acad Sci U S A 2007; 104:1516-21. [PMID: 17234811 PMCID: PMC1785272 DOI: 10.1073/pnas.0609775104] [Citation(s) in RCA: 94] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Ca2+ enters the stereocilia of hair cells through mechanoelectrical transduction channels opened by the deflection of the hair bundle and is exported back to endolymph by an unusual splicing isoform (w/a) of plasma-membrane calcium-pump isoform 2 (PMCA2). Ablation or missense mutations of the pump cause deafness, as described for the G283S mutation in the deafwaddler (dfw) mouse. A deafness-inducing missense mutation of PMCA2 (G293S) has been identified in a human family. The family also was screened for mutations in cadherin 23, which accentuated hearing loss in a previously described human family with a PMCA2 mutation. A T1999S substitution was detected in the cadherin 23 gene of the healthy father and affected son but not in that of the unaffected mother, who presented instead the PMCA2 mutation. The w/a isoform was overexpressed in CHO cells. At variance with the other PMCA2 isoforms, it became activated only marginally when exposed to a Ca2+ pulse. The G293S and G283S mutations delayed the dissipation of Ca2+ transients induced in CHO cells by InsP3. In organotypic cultures, Ca2+ imaging of vestibular hair cells showed that the dissipation of stereociliary Ca2+ transients induced by Ca2+ uncaging was compromised in the dfw and PMCA2 knockout mice, as was the sensitivity of the mechanoelectrical transduction channels to hair bundle displacement in cochlear hair cells.
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Affiliation(s)
- R. Ficarella
- *Telethon Institute of Genetics and Medicine, 80131 Naples, Italy
| | - F. Di Leva
- Departments of Biochemistry, Experimental Veterinary Sciences, and
| | - M. Bortolozzi
- Venetian Institute of Molecular Medicine, 35129 Padua, Italy
| | - S. Ortolano
- Venetian Institute of Molecular Medicine, 35129 Padua, Italy
| | - F. Donaudy
- *Telethon Institute of Genetics and Medicine, 80131 Naples, Italy
| | - M. Petrillo
- *Telethon Institute of Genetics and Medicine, 80131 Naples, Italy
| | - S. Melchionda
- Unit of Medical Genetics, Instituto di Ricovero e Cura a Carattere Scientifico, Casa Sollievo della Sofferenza, 71013 San Giovanni Rotondo, Italy
| | - A. Lelli
- Venetian Institute of Molecular Medicine, 35129 Padua, Italy
| | - T. Domi
- Departments of Biochemistry, Experimental Veterinary Sciences, and
| | - L. Fedrizzi
- Departments of Biochemistry, Experimental Veterinary Sciences, and
| | - D. Lim
- Venetian Institute of Molecular Medicine, 35129 Padua, Italy
| | - G. E. Shull
- Department of Molecular Genetics, University of Cincinnati, Cincinnati, OH 45221; and
| | - P. Gasparini
- *Telethon Institute of Genetics and Medicine, 80131 Naples, Italy
- Unit of Medical Genetics, Department of Reproductive Science and Development, Instituto di Ricovero e Cura a Carattere Scientifico-Burlo Garofalo, University of Trieste, 34127 Trieste, Italy
| | - M. Brini
- Departments of Biochemistry, Experimental Veterinary Sciences, and
- **To whom correspondence may be addressed. E-mail:
, , or fabio.mammano@unipd
| | - F. Mammano
- Physics, University of Padua, 35121 Padua, Italy
- Venetian Institute of Molecular Medicine, 35129 Padua, Italy
- **To whom correspondence may be addressed. E-mail:
, , or fabio.mammano@unipd
| | - E. Carafoli
- Venetian Institute of Molecular Medicine, 35129 Padua, Italy
- **To whom correspondence may be addressed. E-mail:
, , or fabio.mammano@unipd
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178
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Ko C, Lim D, Namgung B, Kim H, Kim H, Woo D, Kim H. MORPHOLOGICAL AND MECHANICAL CHARACTERISTICS DURING PREGNANCY AND LACTATION. J Biomech 2007. [DOI: 10.1016/s0021-9290(07)70363-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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179
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Reichmann D, Cohen M, Abramovich R, Dym O, Lim D, Strynadka NCJ, Schreiber G. Binding Hot Spots in the TEM1–BLIP Interface in Light of its Modular Architecture. J Mol Biol 2007; 365:663-79. [PMID: 17070843 DOI: 10.1016/j.jmb.2006.09.076] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2006] [Revised: 09/07/2006] [Accepted: 09/26/2006] [Indexed: 12/24/2022]
Abstract
Proteins bind one another in aqua's solution to form tight and specific complexes. Previously we have shown that this is achieved through the modular architecture of the interaction network formed by the interface residues, where tight cooperative interactions are found within modules but not between them. Here we extend this study to cover the entire interface of TEM1 beta-lactamase and its protein inhibitor BLIP using an improved method for deriving interaction maps based on REDUCE to add hydrogen atoms and then by evaluating the interactions using modifications of the programs PROBE, NCI and PARE. An extensive mutagenesis study of the interface residues indeed showed that each module is energetically independent on other modules, and that cooperativity is found only within a module. By solving the X-ray structure of two interface mutations affecting two different modules, we demonstrated that protein-protein binding occur via the structural reorganization of the binding modules, either by a "lock and key" or an induced fit mechanism. To explain the cooperativity within a module, we performed multiple-mutant cycle analysis of cluster 2 resulting in a high-resolution energy map of this module. Mutant studies are usually done in reference to alanine, which can be regarded as a deletion of a side-chain. However, from a biological perspective, there is a major interest to understand non-Ala substitutions, as they are most common. Using X-ray crystallography and multiple-mutant cycle analysis we demonstrated the added complexity in understanding non-Ala mutations. Here, a double mutation replacing the wild-type Glu,Tyr to Tyr,Asn on TEM1 (res id 104,105) caused a major backbone structural rearrangement of BLIP, changing the composition of two modules but not of other modules within the interface. This shows the robustness of the modular approach, yet demonstrates the complexity of in silico protein design.
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Affiliation(s)
- D Reichmann
- Department of Biological Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel
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180
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Lim D, Kim J, Son B, Oh Y. The Effects of Breast-milk Feeding on Severe Atopic Dermatitis In Korean Infant and Toddler. J Allergy Clin Immunol 2007. [DOI: 10.1016/j.jaci.2006.12.475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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181
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Oh D, Lim D, Heo J, Choi S, Choi D, Nam H, Ahn Y, Park W, Huh S. 2157. Int J Radiat Oncol Biol Phys 2006. [DOI: 10.1016/j.ijrobp.2006.07.562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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182
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Kang M, Park W, Choi Y, Nam H, Huh S, Ahn Y, Lim D, Park Y, Oh D. 2345. Int J Radiat Oncol Biol Phys 2006. [DOI: 10.1016/j.ijrobp.2006.07.754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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183
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Nam H, Lim D, Kim S, Sohn T, Noh J, Heo J, Kang W, Park C, Ahn Y, Huh S. 1073. Int J Radiat Oncol Biol Phys 2006. [DOI: 10.1016/j.ijrobp.2006.07.338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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184
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Vaz F, Ripley L, Lim D, Kanegaonkar R, Harries M. Optical quality of the nasendoscope with and without the endosheath. J Laryngol Otol 2006; 120:385-8. [PMID: 16696878 DOI: 10.1017/s0022215106000119] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 08/23/2005] [Indexed: 11/07/2022]
Abstract
With the increasing use of the endosheath in clinical practice, we set out to investigate the quality of the nasendoscope image produced with and without an endosheath. It has been suggested by some users that the endosheath degrades the image. We used a spectrophotometer to assess the optical transmission of the endosheath and found no selective chromatic absorption. However, on requesting nine experienced users to document whether they could differentiate between the sheathed and unsheathed endoscope, a significantly correct answering pattern was obtained in repeated blinded experiments. This suggests that individuals can distinguish between the sheathed and unsheathed nasendoscope view and that the image is indeed altered when an endosheath is employed.
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Affiliation(s)
- F Vaz
- Royal Sussex County Hospital, University of Sussex, Brighton, UK.
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185
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Lim D, Tan KB, Kuan WS, Lee YS. Unusual muscle inclusions in a case of carpal tunnel syndrome. Histopathology 2006; 49:214-6. [PMID: 16879407 DOI: 10.1111/j.1365-2559.2006.02424.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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186
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Nusco GA, Chun JT, Ercolano E, Lim D, Gragnaniello G, Kyozuka K, Santella L. Modulation of calcium signalling by the actin-binding protein cofilin. Biochem Biophys Res Commun 2006; 348:109-14. [PMID: 16875665 DOI: 10.1016/j.bbrc.2006.07.023] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2006] [Accepted: 07/03/2006] [Indexed: 10/24/2022]
Abstract
Cofilin is a small protein that belongs to the family of actin-depolymerizing factors (ADF). The main cellular function of cofilin is to change cytoskeletal dynamics and thus to modulate cell motility and cytokinesis. We have recently demonstrated that the actin cytoskeleton is involved in the modulation of Ca(2+) signalling in starfish oocytes. To extend these observations, we have explored whether cofilin influences Ca(2+) signalling in the oocytes. Here we show that microinjection of the functionally active cofilin alters the Ca(2+) signalling mediated by the three major second messengers, InsP(3), NAADP, and cADPr. Cofilin intensifies the Ca(2+) signals induced by InsP(3) and NAADP, and delays those induced by cADPr. Furthermore, the injection of cofilin increases the Ca(2+) signals during hormone-induced oocyte maturation and fertilization. The results suggest that the dynamic regulation of F-actin by its binding proteins may play an important role in the modulation of intracellular Ca(2+) signalling.
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Affiliation(s)
- Gilda A Nusco
- Cell Signalling Laboratory, Stazione Zoologica Anton Dohrn Villa Comunale, I-80121 Naples, Italy
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187
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Abstract
This report describes the use of fine needle aspiration (FNA) cytology to make a rapid diagnosis of Penicillium marneffei infection in an HIV positive patient. P marneffei is a thermally dimorphic fungus that is a mould at 25 degrees C and a yeast at 37 degrees C. It multiplies by fission. It can be easily mistaken for various other infections that are characterised by the presence of histiocytes with phagocytosed yeast cells. In smears the demonstration of yeast cells with a distinctive central septum confirms the diagnosis.
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Affiliation(s)
- D Lim
- Department of Pathology, National University Hospital, Singapore.
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188
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Morgan R, Valdes-Albini F, Synold T, Somlo G, Shibata S, Chow WA, Lim D, Koehler S, Frankel P, Doroshow J. Phase I trial of bortezomib in combination with topotecan in advanced solid tumor malignancies. J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.12004] [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] [Indexed: 11/20/2022] Open
Abstract
12004 Background: Bortezomib (B) and topotecan (T) have been shown in pre-clinical testing to be synergistic. Based on this data we have performed a phase I study to determine the maximally tolerated dose and toxicities (tox) of B and T delivered sequentially. Methods: 24 pts (KPS<ECOG 3) with advanced malignancies were treated with T (2.0, 2.5, 3.0 or 3.5 mg/m2 in sequential cohorts) IV on days 1 and 8 of each three week cycle. B 1.3 mg/m2 iv was administered six hours following T on days 1 and 8, and alone on days 4 and 12. Pts were treated in cohorts of 3, the MTD dose was expanded to include 10 additional pts for PK analysis. There was no limit on prior therapies. DLT was defined as any gr 3 or 4 non-hematologic toxicity not reversible in 48h or any gr 3 thrombocytopenia lasting >7 days or associated with bleeding or any gr 4. Results: Tumor types included: breast (4), ovary (5), lung (3), others (12). 24 pts were entered (11M 13F). The median age was 55 (range: 34–83). DLT was thrombocytopenia, observed in two pts at 3.5 mg/m2 and one pt at 3.0 mg/m2 (MTD). Other grade 3 or 4 tox included fatigue, lymphopenia, hypomagnesemia, and hypertriglyceridemia. Of the 24 enrolled pts, stable disease was observed in 4 (4 or 5 cycles), 9 progressed, 5 were inevaluable and 6 are too early. PK analysis is pending. Conclusions: T and B delivered sequentially are well tolerated on a weekly schedule. DLT is thrombocytopenia. PK will be presented.(Supported by NCI Grant CA33572). [Table: see text]
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Affiliation(s)
- R. Morgan
- City of Hope, Duarte, CA; National Cancer Institute, Bethesda, MD
| | - F. Valdes-Albini
- City of Hope, Duarte, CA; National Cancer Institute, Bethesda, MD
| | - T. Synold
- City of Hope, Duarte, CA; National Cancer Institute, Bethesda, MD
| | - G. Somlo
- City of Hope, Duarte, CA; National Cancer Institute, Bethesda, MD
| | - S. Shibata
- City of Hope, Duarte, CA; National Cancer Institute, Bethesda, MD
| | - W. A. Chow
- City of Hope, Duarte, CA; National Cancer Institute, Bethesda, MD
| | - D. Lim
- City of Hope, Duarte, CA; National Cancer Institute, Bethesda, MD
| | - S. Koehler
- City of Hope, Duarte, CA; National Cancer Institute, Bethesda, MD
| | - P. Frankel
- City of Hope, Duarte, CA; National Cancer Institute, Bethesda, MD
| | - J. Doroshow
- City of Hope, Duarte, CA; National Cancer Institute, Bethesda, MD
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189
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Shibata S, Lim D, Yen Y, Koczywas M, Morgan R, Leong L, Somlo G, Margolin K, Ruel C, Doroshow J. Phase II study of hydroxyurea and gemcitabine in recurrent or persistent squamous cell cancer of the head and neck. J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.15524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
15524 Background: Preclinical studies demonstrate increased activity when hydroxyurea (HU) is given prior to gemcitabine (G). Clinical feasibility was demonstrated in a phase I trial (Yen, et. al. Cancer Chemother Pharmacol. 2002 ). We performed a phase II trial treating patients (pts) with squamous cell head and neck cancers (SCCHN). Methods: Pts had metastatic or incurable locally recurrent SCCHN. Prior chemotherapy was allowed, but not required. Serum creatinine ≤2.0 mg/dl, bilirubin <3.0 gm/dl, AST/ALT <5× ULN and KPS ≥60% were required. HU 500 mg orally every 6 hours for 4 doses was given on day 1 of a 21-day cycle. On day 2, 6 hours after HU, G 750 mg/m2 was given over 30 minutes. This sequence was repeated on day 8 and 9. After 8 pts, G was given at 500 mg/m2. G-CSF was given on day 10 and until the WBC count was >10k/μl. The primary endpoint was response rate (RR), with an early stopping rule for <3 objective responders among the first 18 pts. Results: 22 pts (17 M) were accrued, 16 with prior chemotherapy and 19 with prior radiation. The first 8 pts received G 750 mg/m2. Two pts died of neutropenic fever (NF) during course 1. Subsequently 14 pts received G 500 mg/m2. 18 pts were evaluable for response, with 1 still in follow-up. Partial response was seen in 1 pt, stable disease in 9, and progressive disease in 8. The overall median survival of the 22 pts was 6 months and the median progression free survival (PFS) was 2 months. The primary toxicity was hematologic. Grade 4 neutropenia was seen in 7/22 pts during the 1st cycle (5 at G 750 mg/m2) with 5 cases of NF. Grade 4 thrombocytopenia occurred in 1 pt at G 750 mg/m2. Conclusions: The RR and PFS of treated pts treated were not promising and further accrual is not planned. Analysis of biopsy materials is planned to see if responsive pts can be selected. (Supported by NCI Grant CA33572). No significant financial relationships to disclose.
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Affiliation(s)
- S. Shibata
- City of Hope, Duarte, CA; National Cancer Institute, Bethesda, MD
| | - D. Lim
- City of Hope, Duarte, CA; National Cancer Institute, Bethesda, MD
| | - Y. Yen
- City of Hope, Duarte, CA; National Cancer Institute, Bethesda, MD
| | - M. Koczywas
- City of Hope, Duarte, CA; National Cancer Institute, Bethesda, MD
| | - R. Morgan
- City of Hope, Duarte, CA; National Cancer Institute, Bethesda, MD
| | - L. Leong
- City of Hope, Duarte, CA; National Cancer Institute, Bethesda, MD
| | - G. Somlo
- City of Hope, Duarte, CA; National Cancer Institute, Bethesda, MD
| | - K. Margolin
- City of Hope, Duarte, CA; National Cancer Institute, Bethesda, MD
| | - C. Ruel
- City of Hope, Duarte, CA; National Cancer Institute, Bethesda, MD
| | - J. Doroshow
- City of Hope, Duarte, CA; National Cancer Institute, Bethesda, MD
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Moccia F, Nusco GA, Lim D, Kyozuka K, Santella L. NAADP and InsP3 play distinct roles at fertilization in starfish oocytes. Dev Biol 2006; 294:24-38. [PMID: 16545362 DOI: 10.1016/j.ydbio.2006.02.011] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2005] [Revised: 02/06/2006] [Accepted: 02/14/2006] [Indexed: 11/22/2022]
Abstract
NAADP participates in the response of starfish oocytes to sperm by triggering the fertilization potential (FP) through the activation of a Ca2+ current which depolarizes the membrane to the threshold of activation of the voltage-gated Ca2+ channels. The aim of this study was to investigate whether this Ca2+ influx is linked to the onset of the concomitant InsP3-mediated Ca2+ wave by simultaneously employing Ca2+ imaging and single-electrode intracellular recording techniques. In control oocytes, the sperm-induced membrane depolarization always preceded by a few seconds the onset of the Ca2+ wave. Strikingly, the self-desensitization of NAADP receptors either abolished the Ca2+ response or resulted in abnormal oocyte activation, i.e., the membrane depolarization followed the Ca2+ wave and the oocyte was polyspermic. The inhibition of InsP3 signaling only impaired the propagation of the Ca2+ wave and shortened the FP. The duration of FP was also reduced in low-Na+ sea water. Finally, uncaged InsP3 produced a Ca2+ increase, which depolarized the membrane upon the activation of a Ca2+-sensitive cation current. These results support the hypothesis that Ca2+ entry during the NAADP-triggered FP is required for the onset of the Ca2+ wave at fertilization. The InsP3-mediated Ca2+ wave, in turn, may interact with the NAADP-evoked depolarization by activating a Ca2+-dependent Na+ entry.
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Affiliation(s)
- Francesco Moccia
- Laboratory of Cell Signaling, Stazione Zoologica Anton Dohrn, Villa Comunale, 80121 Naples, Italy.
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191
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Kim CS, Park HS, Kawada T, Kim JH, Lim D, Hubbard NE, Kwon BS, Erickson KL, Yu R. Circulating levels of MCP-1 and IL-8 are elevated in human obese subjects and associated with obesity-related parameters. Int J Obes (Lond) 2006; 30:1347-55. [PMID: 16534530 DOI: 10.1038/sj.ijo.0803259] [Citation(s) in RCA: 352] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND Chemotactic cytokines, referred to as chemokines, play an important role in leukocyte trafficking. The circulating levels of chemokines have been shown to increase in inflammatory processes including obesity-related pathologies (e.g. atherosclerosis and diabetes). However, little is currently known about the relationship between chemokines and human obesity. In the present study, we investigated the circulating levels of selected chemokines (monocyte chemoattractant protein-1 (MCP-1), macrophage inflammatory protein-1alpha (MIP-1alpha), leukotactin-1, interleukin-8 (IL-8)) and the association between the chemokine levels and obesity-related parameters: body mass index (BMI), waist circumference, fasting glucose and insulin levels, lipids profile, and the level of C-reactive protein (CRP). METHODS A total of 100 subjects, 50 obese (BMI>or=25 kg/m2) and 50 who were not obese (BMI<25 kg/m2) participated in the present study. The levels of chemokines and CRP were measured in a fasting state serum by sandwich enzyme-linked immunosorbent assay. Total cholesterol, high-density lipoprotein (HDL)-cholesterol, triglyceride, glucose, and insulin levels were measured by enzymatic analysis and immunoassay. RESULTS The circulating levels of MCP-1 and IL-8 in the serum were significantly (P<0.05) higher in obese subjects (BMI>30 kg/m2) compared with those of nonobese controls (BMI<25 kg/m2). The levels of CRP were positively correlated with BMI (P<0.001) or waist circumference (P<0.0001). The levels of MCP-1 and IL-8 were positively related to BMI (MCP-1, P<0.02; IL-8, P<0.01) and/or waist circumference (MCP-1, P<0.009; IL-8, P<0.03). The levels of MCP-1 were positively related to the levels of CRP (P<0.007) or interleukin-6 (IL-6) (P<0.0001), and negatively related to the levels of HDL-cholesterol (P<0.01). Homeostasis model assessment (HOMA) score was positively related to the levels of MCP-1 (P<0.02) or IL-8 (P<0.03) in obese subject. DISCUSSION Our data demonstrated that the circulating levels of MCP-1 and IL-8 are related to obesity-related parameters such as BMI, waist circumference, CRP, IL-6, HOMA and HDL-cholesterol. These findings suggest that the circulating MCP-1 and/or IL-8 may be a potential candidate linking obesity with obesity-related metabolic complications such as atherosclerosis and diabetes.
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Affiliation(s)
- C-S Kim
- Department of Food Science and Nutrition, University of Ulsan, Ulsan, Korea
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192
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Abstract
Keloids are proliferative growths of dermal collagen, usually resulting from excessive tissue response during wound healing. There is evidence that keratinocytes may promote keloidogenesis via epithelial-mesenchymal interactions. Metallothioneins (MTs) are known to be involved in the fundamental cellular processes of growth and apoptosis. In this study, we evaluated the expression of MT isoforms in normal and keloid keratinocytes. The expression patterns of ten functional MT isoforms were assessed using real-time RT-PCR in primary cultures of normal and keloid keratinocytes. The MT-2A isoform was the most abundant MT isoform in both normal and keloid keratinocytes while the MT-1B isoform was absent. There was a significant increase in the mRNA expression of four MT isoforms, viz. MT-1A, 1E, 1F and 2A in keloid keratinocytes as compared to normal keratinocytes. Up-regulation of MT-1A, 1E, 1F and 2A isoforms may play a part in the development of keloids by paracrine signaling.
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Affiliation(s)
- D Lim
- Department of Anatomy, National University of Singapore, Singapore 117597
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Affiliation(s)
- J H Shin
- Avicore Biotechnology Institute Inc., Hanlim Human Tower no. 707, Geumjeong-Dong 1-40, Gunpo city, Gyeonggi-Do 435-050, Korea
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Verdile G, Gnjec A, Miklossy J, Fonte J, Veurink G, Bates K, Kakulas B, Mehta PD, Milward EA, Tan N, Lareu R, Lim D, Dharmarajan A, Martins RN. Protein markers for Alzheimer disease in the frontal cortex and cerebellum. Neurology 2006; 63:1385-92. [PMID: 15505153 DOI: 10.1212/01.wnl.0000141848.45315.a6] [Citation(s) in RCA: 23] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE To compare proteins related to Alzheimer disease (AD) in the frontal cortex and cerebellum of subjects with early-onset AD (EOAD) with or without presenilin 1 (PS1) mutations with sporadic late-onset AD (LOAD) and nondemented control subjects. METHODS Immunohistochemistry, immunoblot analysis, and ELISA were used to detect and assess protein levels in brain. RESULTS In EOAD and to a lesser extent in LOAD, there was increased amyloid beta (Abeta) deposition (by immunohistochemistry), increased soluble Abeta (by immunoblot analysis), and specific increases in Abeta40 and Abeta42 (by ELISA) in the frontal cortex and, in some cases, in the cerebellum. Surprisingly, immunoblot analysis revealed reduced levels of PS1 in many of the subjects with EOAD with or without PS1 mutations. In those PS1 mutation-bearing subjects with the highest Abeta, PS1 was barely, if at all, detectable. This decrease in PS1 was specific and not attributable solely to neuronal loss because amyloid precursor protein (APP) and the PS1-interacting protein beta-catenin levels were unchanged. CONCLUSIONS This study shows that in the frontal cortex and cerebellum from Alzheimer disease patients harboring certain presenilin 1 mutations, high levels of amyloid beta are associated with low levels of presenilin 1. The study provides the premise for further investigation of mechanisms underlying the downregulation of presenilin 1, which may have considerable pathogenic and therapeutic relevance.
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Affiliation(s)
- G Verdile
- The Sir James McCusker Alzheimer's Disease Research Unit, School of Psychiatry & Clinical Neurosciences, The University of Western Australia, Hollywood Private Hospital, Nedlands, WA, Australia
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Lim D, Peeler B, Rheuban K, Matherne G. Coarctation of the Aorta - An Evolution of Therapeutic Options. Curr Cardiol Rev 2005. [DOI: 10.2174/157340305774574099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Alagiakrishnan K, Lim D, Brahim A, Wong A, Wood A, Senthilselvan A, Chimich WT, Kagan L. Sexually inappropriate behaviour in demented elderly people. Postgrad Med J 2005; 81:463-6. [PMID: 15998824 PMCID: PMC1743300 DOI: 10.1136/pgmj.2004.028043] [Citation(s) in RCA: 88] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
AIM To determine the prevalence, aetiology, and treatment profile of abnormal sexual behaviour in subjects with dementia in psychogeriatric practices. METHODS A retrospective cross sectional study was conducted in a long term care psychiatry consultation service, community based geriatric psychiatry service, and an inpatient dementia behavioural unit in Edmonton, Canada. RESULTS Forty one subjects (1.8%) had sexually inappropriate behaviour. Of those cognitively impaired subjects with sexually inappropriate behaviour, 20 (48.8%) were living in nursing homes and the rest, 21 (51.2%) in the community. Of these subjects, 53.7% had vascular dementia, 22% had Alzheimer's, and 9.8% had mild cognitive impairment. History of alcohol misuse and psychosis were reported in 14.6% and 9.8% of subjects respectively. Twenty seven (65.7%) had verbally inappropriate behaviour and 36 (87.8%) had physically inappropriate behaviour. In this study, verbally inappropriate behaviour was more commonly seen in the community sample (81%) than in the nursing home sample (50%) (p = 0.04). Behavioural treatment was also more commonly seen in the community sample (81%) than in the nursing home sample (45%) (p = 0.01). CONCLUSION In this study sexually inappropriate behaviour was seen in all stages of dementia, more commonly associated with subjects of vascular aetiology, and is as commonly seen in community dwelling subjects with dementia as in nursing home subjects.
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Affiliation(s)
- K Alagiakrishnan
- Division of Geriatric Medicine, Department of Medicine, University of Alberta, Edmonton, Canada.
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197
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Soo KC, Tan EH, Wee J, Lim D, Tai BC, Khoo ML, Goh C, Leong SS, Tan T, Fong KW, Lu P, See A, Machin D. Surgery and adjuvant radiotherapy vs concurrent chemoradiotherapy in stage III/IV nonmetastatic squamous cell head and neck cancer: a randomised comparison. Br J Cancer 2005; 93:279-86. [PMID: 16012523 PMCID: PMC2361563 DOI: 10.1038/sj.bjc.6602696] [Citation(s) in RCA: 135] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
We compared concurrent combination chemotherapy and radiotherapy with surgery and adjuvant radiotherapy in patients with stage III/IV nonmetastatic squamous cell head and neck cancer. Patients with non-nasopharyngeal and nonsalivary resectable squamous cell head and neck cancer were randomised to receive either surgery followed by adjuvant radiotherapy (60 Gy over 30 fractions) or concurrent combination chemotherapy and radiotherapy (66 Gy in 33 fractions). Combination chemotherapy comprised two cycles of i.v. cisplatin 20 mg m− 2 day− 1 and i.v. 5-fluorouracil 1000 mg m− 2 day− 1, both to run over 96 h given on days 1 and 28 of the radiotherapy. A total of 119 patients were randomised. At a median follow-up of 6 years, there was no significant difference in the 3-year disease-free survival rate between the surgery and concurrent chemoradiotherapy (50 vs 40% respectively). The overall organ preservation rate or avoidance of surgery to primary site was 45%. Those with laryngeal/hypopharyngeal disease subsite had a higher organ-preservation rate than the rest (68 vs 30%). Combination chemotherapy and concurrent irradiation with salvage surgery was not superior to conventional surgery and postoperative radiotherapy for resectable advanced squamous cell head and neck cancer. However, this form of treatment schedule with a view to organ-preservation can be attempted especially for those with laryngeal/hypopharyngeal and possibly oropharyngeal disease subsites.
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Affiliation(s)
- K-C Soo
- Department of Surgical Oncology, National Cancer Centre, Singapore.
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Ahn Y, Kim K, Nam H, Oh D, Park Y, Lim D, Han J, Park J, Kim J, Kim K. P-190 Prognostic factors of N2 positive stage IIIA non-small cell lung cancer treated with preoperative concurrent radiochemotherapy and surgery. Lung Cancer 2005. [DOI: 10.1016/s0169-5002(05)80684-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Leong S, Fong K, Toh C, Lim D, Yap S, Tay M, Tan E. P-213 A phase II trial of induction gemcitabine and vinorelbine followed by concurrent vinorelbine and radiotherapy in locally advanced non-small cell lung cancer; a non-platinum-based bimodality treatment schedule. Lung Cancer 2005. [DOI: 10.1016/s0169-5002(05)80707-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Ahn Y, Kim B, Lim D, Nam H, Oh D, Park Y. P-601 High dose radiation therapy with 3 Gy per fraction in medicallyinoperable high dose radiation therapy with 3 Gy per fraction in medically inoperable stage I/II non-small cell lung cancer. Lung Cancer 2005. [DOI: 10.1016/s0169-5002(05)81094-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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