901
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Lu J, Gong D, Choong SY, Xu H, Chan YK, Chen X, Fitzpatrick S, Glyn-Jones S, Zhang S, Nakamura T, Ruggiero K, Obolonkin V, Poppitt SD, Phillips ARJ, Cooper GJS. Copper(II)-selective chelation improves function and antioxidant defences in cardiovascular tissues of rats as a model of diabetes: comparisons between triethylenetetramine and three less copper-selective transition-metal-targeted treatments. Diabetologia 2010; 53:1217-26. [PMID: 20221822 DOI: 10.1007/s00125-010-1698-8] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2009] [Accepted: 01/22/2010] [Indexed: 12/26/2022]
Abstract
AIMS/HYPOTHESIS Treatment with the Cu(II)-selective chelator triethylenetetramine (TETA) improves cardiovascular disease in human patients, and cardiac and vascular/renal disease in rats used as a model of diabetes. Here we tested two hypotheses: first, that TETA elicits greater improvement in organ function than less Cu-selective transition-metal-targeted treatments; second, that the therapeutic actions of TETA are consistent with mediation through suppression of oxidative stress. METHODS Rats were made diabetic with streptozotocin (55 mg/kg, i. v.) and treated from 8 weeks after disease induction for the following 8 weeks with effective dosages of oral TETA, or one of three less Cu-selective transition-metal-targeted treatments: D-penicillamine, deferiprone or Zn acetate. Treatment effects were measured in ex vivo cardiac and aortic tissues, plasma and urine. RESULTS Diabetes damaged both cardiac and renal/vascular function by impairing the ability of cardiac output to respond physiologically to rising afterload, and by significantly elevating the urinary albumin/creatinine ratio. Diabetes also lowered total antioxidant potential and heparan sulphate levels in cardiac and arterial tissues, and serum ferroxidase activity, whereas it elevated urinary heparan sulphate excretion. TETA treatment rectified or partially rectified all these defects, whereas the other three experimental treatments were ineffectual. By contrast, none of the four drug treatments lowered diabetes-mediated elevations of plasma glucose or lipid concentrations. CONCLUSIONS/INTERPRETATION TETA may limit the cardiac and renal/vascular damage inflicted by diabetes through its actions to reinforce antioxidant defence mechanisms, probably acting through selective chelation of 'loosely-bound'/chelatable Cu(II). It may also improve heparan sulphate homeostasis and bolster antioxidant defence by increasing vascular extracellular superoxide dismutase activity. Urinary albumin/creatinine ratio might prove useful for monitoring TETA treatment.
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902
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Vile D, Hugo G, Weiss E, Lu J, Roman N, Williamson J. WE-D-204B-09: Interfraction Variability of Tumor Motion Trajectory from Serial 4D Cone-Beam CT Imaging during Audio-Visual Biofeedback. Med Phys 2010. [DOI: 10.1118/1.3469406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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903
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Wang C, Xiang H, Xu Y, Hu D, Zhang W, Lu J, Sun L, Nie S. Improving emergency preparedness capability of rural public health personnel in China. Public Health 2010; 124:339-44. [PMID: 20378134 PMCID: PMC7111611 DOI: 10.1016/j.puhe.2010.02.020] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2008] [Revised: 01/28/2010] [Accepted: 02/26/2010] [Indexed: 11/26/2022]
Abstract
OBJECTIVES Since the outbreaks of severe acute respiratory syndrome and avian influenza, improving the emergency preparedness capability of rural public health personnel has become a new priority in building the infrastructure needed to address public health emergencies. The Chinese Government has carried out a series of emergency preparedness education and training programmes to improve the emergency preparedness capability of rural public health personnel nationwide. The purpose of this study was to evaluate and develop a participatory emergency preparedness training programme for rural public health personnel. STUDY DESIGN The research emphasizes the major components of instructional design, including assessing, designing, delivering and evaluating training. The approach is an integrated system with results from one phase influencing the next, so that a series of steps are followed when developing, implementing and evaluating emergency preparedness training. METHODS The 226 participants were rural public health personnel from 84 different rural centres for disease control and prevention in China. The programme was evaluated by anonymous questionnaires and semi-structured interviews held prior to training, immediately post-training and 12-months after training (follow-up). RESULTS The emergency preparedness training resulted in positive shifts in knowledge and skills for rural public health personnel. At follow-up, the knowledge and skill scores of participants declined slightly compared with the post-test levels (P>0.05). However, there was a significant increase compared with the pre-test levels (P<0.01). Moreover, more than 90% of participants reported that this training provided a valuable learning experience and reinforced the importance of emergency preparedness. CONCLUSIONS The emergency preparedness training programme was effective and feasible in improving the performance of rural public health personnel on emergency response. Further studies are needed to test the efficacy of the training approach for competency improvement.
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904
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Ma C, Yin Y, Lu J. SU-GG-I-91: The Study of AAA Algorithm and PBC Algorithm of Intensity Modulated Radiation Therapy for Breast Cancer. Med Phys 2010. [DOI: 10.1118/1.3468124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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905
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Lu J, Williamson J. TU-B-201B-05: An Analytic Cone Beam CT Reconstruction Algorithm for Double-Orbit Axial Acquisition. Med Phys 2010. [DOI: 10.1118/1.3469201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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906
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Sun T, Yin Y, Lin X, Lu J, Liu T, Chen J, Ma C. SU-GG-T-149: A Dosimetric Comparison of Conventional Intensity-Modulated Radiotherapy and Volumetric Modulated Arc Radiotherapy for Left-Breast Cancer after Breast-Conserving Surgery. Med Phys 2010. [DOI: 10.1118/1.3468539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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907
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Ford J, Zheng D, Saleh H, Lu J, Williamson J. SU-GG-J-31: Simultaneous Estimation of Beam Geometry and Radiation/Imaging Isocenter Coincidence in Cone-Beam CT-Guided Radiation Therapy. Med Phys 2010. [DOI: 10.1118/1.3468255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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908
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Lu J, Rasmussen E, Navale L, Kuchimanchi M, Hurh E, Karlan BY, Vergote IB, Stepan DE, Weinreich DM, Sun Y. Exposure-response relationships of AMG 386 in combination with weekly paclitaxel in advanced ovarian cancer: Population pharmacokinetic/pharmacodynamic (PK/PD) modeling to facilitate phase III dose selection. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.5042] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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909
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Claret L, Lu J, Bruno R, Sikorski RS, Hei Y, Sun Y. Simulation of phase III studies of motesanib 125 mg once daily (QD) plus carboplatin/paclitaxel (CPM) or bevacizumab plus carboplatin/paclitaxel (CPB) versus carboplatin/paclitaxel (CP) in first-line non-small cell lung cancer (NSCLC) using a public domain drug–disease modeling framework and phase II data. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e18089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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910
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Wang Z, Lee HJ, Chai Y, Hu H, Wang L, Zhang Y, Jiang C, Lu J. Persistent P21Cip1 Induction Mediates G1 Cell Cycle Arrest by Methylseleninic Acid in DU145 Prostate Cancer Cells. Curr Cancer Drug Targets 2010; 10:307-18. [DOI: 10.2174/156800910791190238] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2009] [Accepted: 12/09/2010] [Indexed: 11/22/2022]
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911
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912
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Lu J, Itti L. Feature-based attention is not object-based. J Vis 2010. [DOI: 10.1167/6.6.786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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913
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Lu J, Lu ZL, Dosher BA. Perceptual learning in peripheral vision with attention reflects (mostly) template retuning. J Vis 2010. [DOI: 10.1167/2.7.68] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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914
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Yu H, Li Y, Gao C, Fabien L, Jia Y, Lu J, Silberstein LE, Pinkus GS, Ye K, Chai L, Luo HR. Relevant mouse model for human monocytic leukemia through Cre/lox-controlled myeloid-specific deletion of PTEN. Leukemia 2010; 24:1077-80. [PMID: 20220776 DOI: 10.1038/leu.2010.34] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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915
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Sprenger F, Calderon-Colon X, Cheng Y, Englestad K, Lu J, Maltz J, Paidi A, Qian X, Spronk D, Sultana S, Yang G, Zhou O. Distributed source x-ray tube technology for tomosynthesis imaging. PROCEEDINGS OF SPIE--THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING 2010; 7622:76225M. [PMID: 21785671 DOI: 10.1117/12.844586] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Tomosynthesis imaging requires projection images from different viewing angles. Conventional systems use a moving xray source to acquire the individual projections. Using a stationary distributed x-ray source with a number of sources that equals the number of required projections, this can be achieved without any mechanical motion. Advantages are a potentially faster image acquisition speed, higher spatial and temporal resolution and simple system design. We present distributed x-ray sources based on carbon nanotube (CNT) field emission cathodes. The field emission cathodes deliver the electrons required for x-ray production. CNT emitters feature a stable emission at high current density, a cold emission, excellent temporal control of the emitted electrons and good configurability. We discuss the use of stationary sources for two applications: (i) a linear tube for stationary digital breast tomosynthesis (sDBT), and (ii) a square tube for on-board tomosynthesis image-guided radiation therapy (IGRT). Results from high energy distributed sources up to 160kVp are also presented.
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916
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Peng C, Huang H, Ji X, Liu X, Ren L, Yu W, You J, Lu J. Effects of n-Hexadecane Concentration and a Two-Stage Oxygen Supply Control Strategy on Arachidonic Acid Production by Mortierella Alpina ME-1. Chem Eng Technol 2010. [DOI: 10.1002/ceat.200900413] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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917
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Lu J, Xue LY, Lu N, Zou SM, Liu XY, Wen P. Superficial primary small cell carcinoma of the esophagus: clinicopathological and immunohistochemical analysis of 15 cases. Dis Esophagus 2010; 23:153-9. [PMID: 19515193 DOI: 10.1111/j.1442-2050.2009.00981.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Primary esophageal small cell carcinoma (PESCC) is a relatively rare and aggressive tumor with poor prognosis. Systemic spreading and metastasis often occur at diagnosis. Although 5-year survival rate of superficial squamous cell carcinoma of the esophagus can be 86.1%, 5-year survival rate of superficial PESCC is still relatively low. This study mainly retrospectively analyzed clinicopathological and immunohistochemical features of 15 cases of superficial PESCC in our hospital from 1990 to 2004, in order to find suitable diagnostic markers and applicable therapies for this disease. The records mainly included presenting symptoms, demographics, diagnostic method, histopathology, follow-up, and therapy. Immunohistochemical staining of chromogranin A (CgA), neuron-specific enolase (NSE), synaptophysin (Syn), neuronal cell adhesion molecules (CD56), thyroid transcription factor-1 (TTF-1), cytokeration 34betaE12 (CK34betaE12), cytokeratin (AE1/AE3), and cytokeratin 10/13 was performed. Incidence of superficial PESCC accounted for 4.8% of that of superficial carcinoma of the esophagus during the same period. Initial symptoms of all patients were dysphagia or accompanied with retrosternal pain and upper abdominal pain, and duration of these symptoms was 75 days averagely. Mean age of patients was 58.8 years old, and the male-to-female ratio was 2.75 : 1. Lesions were mainly located at middle thoracic esophagus. One, 2, and 5-year survival rates were 66.7, 33.3, and 6.7%, respectively. The median survival time was 19 months and mean survival time was 23.7 months after diagnosis. The percentages of PESCC samples with positive immunoreactivity were NSE 100%, Syn 100%, AE1/AE3 100%, CD56 93.3%, TTF-1 60%, CgA 53.3%, CK34betaE12 6.7%, and cytokeratin 10/13 0%, respectively. Our study suggested that PESCC was a rare and aggressive tumor with high malignancy. Superficial PESCC had rapid progression and poor prognosis compared with superficial squamous cell carcinoma of the esophagus at the same stage. The systemic therapy based on combination of postoperative chemotherapy and radiotherapy might be an effective approach for the treatment of superficial PESCC as a systemic disease. Higher proportion of positive labeling of NSE, Syn, AE1/AE3, CD56, TTF-1, and CgA in PESCC was valuably applied in diagnosis and differential diagnosis.
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918
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Hong L, Zhang J, Min J, Lu J, Li F, Li H, Guo S, Li Q. A role for MHBst167/HBx in hepatitis B virus-induced renal tubular cell apoptosis. Nephrol Dial Transplant 2010; 25:2125-33. [DOI: 10.1093/ndt/gfp737] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
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919
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Zhu L, Lu J, Tay SSW, Jiang H, He BP. Induced NG2 expressing microglia in the facial motor nucleus after facial nerve axotomy. Neuroscience 2010; 166:842-51. [PMID: 20060036 DOI: 10.1016/j.neuroscience.2009.12.057] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2009] [Revised: 12/23/2009] [Accepted: 12/23/2009] [Indexed: 11/26/2022]
Abstract
Chondroitin sulfate proteoglycan (NG2) expressing cells, ubiquitously distributed in the CNS respond to injured or diseased neurons; however, their behaviors toward injured neurons have remained to be fully explored. In the present study, along with astrocytic and microglial responses, NG2 expressing cells reacted swiftly and robustly in the facial motor nucleus (FMN) subjected to axotomy. With time, hypertrophic NG2 expressing cells gradually adhered to and enwrapped the axotomized motoneurons. Tight encapsulations around axotomized motoneurons were eventually formed at 7, 14, and 28 days after axotomy. NG2 positive processes appeared to interpose between synapsin-1 immunoreactive nerve terminals and surfaces of axotomized motoneurons. Double labeling results showed that NG2 expressing cells encapsulating axotomized facial motoneurons were mainly microglia marked by OX42 and lectin; only a few of them were positive to platelet-derived growth factor-alpha receptor and none of them positive to ED-1. No Rhodamine particle was detected in the FMN ipsilateral to axotomy after venous injection of the particles. The results suggest that activated microglia in lesioned FMN were induced to express NG2 molecules. It is concluded that axotomized FMN showed two types of NG2 expressing cells namely constitutive NG2 cells and induced-NG2 expressing microglia.
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920
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Chik W, Barry M, Malchano Z, Huang K, Lu J, Pouliopoulos J, Hsieh C, Ross D, Thomas S, Kovoor P, Thiagalingam A. Utility of Direct Full-Colour Endovascular Visualisation in Identifying Gaps and Achieve Electrical Conduction Block. Heart Lung Circ 2010. [DOI: 10.1016/j.hlc.2010.06.939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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921
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Hsieh C, Chia E, Huang K, Lu J, Pouliopoulos J, Kovoor P. Post-myocardial Infarction Evolution of Left Ventricular Electrophysiological Substrate. Heart Lung Circ 2010. [DOI: 10.1016/j.hlc.2010.06.882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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922
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Gao Q, Lu J, Huo Y, Baby N, Ling E, Dheen S. NG2, a member of chondroitin sulfate proteoglycans family mediates the inflammatory response of activated microglia. Neuroscience 2010; 165:386-94. [DOI: 10.1016/j.neuroscience.2009.10.022] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2009] [Revised: 10/12/2009] [Accepted: 10/12/2009] [Indexed: 02/06/2023]
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923
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Pouliopoulos J, Sivagangabalan G, Chik W, Huang K, Lu J, Byth K, Thiagalingam A, Kovoor P. The Role of Restitution Profile in Determining Ventricular Tachycardia Propensity Post-Myocardial Infarction. Heart Lung Circ 2010. [DOI: 10.1016/j.hlc.2010.06.932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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924
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Wu J, Shen K, Chen X, Chen C, Hu Z, Liu G, Di G, Lu J, Wu J, Shao Z, Shen Z. Diffusion-Weighted MRI in Predicting the Efficacy of Neoadjuvant Chemotherapy of Breast Cancer. Cancer Res 2009. [DOI: 10.1158/0008-5472.sabcs-09-4025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Objective: To approach the apparent diffusion coefficient(ADC) obtained on diffusion weighted imaging (DWI) in predicting the response of breast cancer to neoadjuvant chemotherapy.Methods: 53 locally advanced breast cancer patients participated in this prospective study on neoadjuvant chemotherapy. All patients were treated with weekly neoadjuvant paclitaxel plus carboplatin for 4 cycles. DWI and ADC value were examined before chemotherapy(the first time point), after the first and the forth cycle of chemotherapy(the second and the third time point). Patients were categorized as high responders if their ADC at the second time point were higher by 2 times the standard deviation than the mean pre-chemotherapy ADC, and otherwise the patients were considered as low responders. Logistic regression was conducted to examine the independent factors predictive of clinical complete response(CR) and pathologic complete response(pCR).Results: CR was documented in 13 patients (24.5%); partial response in 36 patients (67.9%); stable disease in 4 patients (7.5%) and no patient had progressive disease. 11 patients(20.8%) have achieved pCR. There was a strong positive correlation between the percentage changes in ADC value at the third time points and the degree of the tumor reduction. A significant increase in ADC value was observed at the second time point compared with the first time point (1.104±0.117×10-3mm2/s, 1.220±0.158×10-3mm2/s, P<0.001), while the decrease of the longest diameter of the tumors measured by physical examination, ultrasound or MRI or the tumor volumn measured by MRI were not (P>0.05). Logistic regression revealed that percentage changes of ADC value at the second time point were significantly associated with CR(P=0.022, hazard ratio[HR] =1.08, 95% confidence interval[CI]: 1.01∼1.16) and pCR(P=0.022, HR =1.11, 95%CI: 1.02∼1.21). The AUC value of the receiver operating characteristic curve were 0.721(95%CI: 0.512∼0.931, P=0.017) and 0.775(95%CI: 0.598∼0.952, P=0.005) in the two diagnostic tests for CR and pCR, and the sensitivity and specificity were 76.9%, 63.6% and 77.5%, 90.5%, respectively. According to categorizing system described above, 10 patients(18.9%) were considered as high responders and 43 patients(81.1%) low responders. 7 patients(70%) of the high responders have achieved clinical CR and pCR while for the low responders there were only 6 patients(14.0%) and 4 patients (9.3%) proven to have CR and pCR. The difference have both reached statistical significance(P=0.001, P<0.001). Logistic regression confirmed that the categorizing system was independently predictive of CR(P=0.006, HR=42.26, 95%CI: 2.86∼624.08) and pCR(P=0.013, HR=25.19, 95%CI: 2.00∼318.91). Taking this categorizing system as a dignostic test, the sensitivity and specificity were 53.8% and 92.5% for CR and 63.6% and 92.9% for pCR, respectively.Conclusions: The change of ADC value obtained on DWI after the first cycle of neoadjuvant chemotherapy occured prior to the morphologic changes of the tumor and at this time ADC value could to some extent predict the efficacy of neoadjuvant chemotherapy.
Citation Information: Cancer Res 2009;69(24 Suppl):Abstract nr 4025.
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925
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Wu J, Shen K, Chen X, Chen C, Hu Z, Liu G, Di G, Lu J, Wu J, Shao Z, Shen Z. Estrogen Receptor Expression: Possible Predictor of Pathological Complete Response to Neoadjuvant Chemotherapy in Locally Advanced Breast Cancer Patients. Cancer Res 2009. [DOI: 10.1158/0008-5472.sabcs-09-1104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
BackgroundEstrogen receptor(ER) status has been found to correlate inversely to pathologic complete response (pCR) rates of neoadjuvant chemotherapy(NAC) of breast cancer. However, not all ER-positive breast cancer respond equally to NAC. The present study aimed to determine the relationship between different ER expression level with pCR in locally advanced breast cancer(LABC) patients who have received NAC.MethodsA retrospective study of 332 female unilateral LABC patients undergoing NAC was performed. All patients were confirmed as invasive breast cancer before treated with NAC, including VE (vinorelbine, epirubicin), CEF (cyclophosphamide, epirubicin, fluorouracil) and PCb regimen (paclitaxel, carboplatin). All patients underwent radical surgery and pCR was defined as the absence of invasive breast cancer in both breast and axillary lymph nodes. ER status were checked using the established immunohistochemical(IHC) method and defined as negative, weakly positive(1+), medium positive(2+) and strongly positive(3+). Binary logistic regression was performed to determine the independent predictors of pCR.ResultsER negativity, 1+, 2+ and 3+ were found in 156, 108, 37 and 31 patients, of which 42(26.9%), 21(19.4%), 3(8.1%) and 1 patients(3.2%) have achieved pCR. Binary logistic regression showed that different ER expression level(P=0.021) and HER2 status(P=0.007, hazard ratio[HR] =2.557, 95% confidence interval[CI]: 1.297∼5.038) were significantly associated with the pCR rates. pCR was much more likely to occur in patients with ER-negative(P=0.024, HR =13.119, 95% CI: 1.402∼122.774) or ER 1+(P=0.025, HR=12.928, 95% CI: 1.388∼120.390) tumors than those with ER 3+ tumors.ConclusionER weekly positive patients also gain considerable benefit from NAC, which is probably less effective in ER strongly positive patients in terms of pCR.
Citation Information: Cancer Res 2009;69(24 Suppl):Abstract nr 1104.
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