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Wang H, Wu Q, Zhang L, Luo H, Wang X, Tie J, Ren Z. A lattice model based on percolation theory for cold atmospheric DBD plasma decontamination kinetics. Food Res Int 2024; 177:113918. [PMID: 38225119 DOI: 10.1016/j.foodres.2023.113918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 12/12/2023] [Accepted: 12/21/2023] [Indexed: 01/17/2024]
Abstract
The tailing phenomenon, where the survival curve of bacteria shows a slow tailing period after a rapid decline, is a ubiquitous inactivation kinetics process in the advanced plasma sterilization field. While classical models suggest that bacterial resistance dispersion causes the tailing phenomenon, experiments suggest that the non-uniform spatial distribution of spores (clustered structure) is the cause. However, no existing inactivation kinetics model can accurately describe spatial heterogeneity. In this paper, we propose a lattice model based on percolation theory to explain the inactivation kinetics by considering the non-uniform spatial distribution of spores and plasma. Our model divides spores into non-clustered and clustered types and distinguishes between short-tailing and long-tailing compositions and their formation mechanisms. By systematically studying the effects of different spore and plasma parameters on the tailing phenomenon, we provide a reasonable explanation for the kinetic law of the plasma sterilization survival curve and the mechanism of the tailing phenomenon in various cases. As an example, our model accurately explains the 80-second kinetics of atmospheric pressure plasma inactivation of spores, a process that previous models struggled to understand due to its multi-stage and long-tail phenomena. Our model predicts that increasing the spatial distribution probability of plasma can shorten the complete killing time under the same total energy, and we validate this prediction through experiments. Our model successfully explains the seemingly irregular plasma sterilization survival curve and deepens our understanding of the tailing phenomenon in plasma sterilization. This study offers valuable insights for the sterilization of food surfaces using plasma technology, and could serve as a guide for practical applications.
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Affiliation(s)
- Hao Wang
- School of Electrical Engineering, Chongqing University, Chongqing 400044, China; Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
| | - Qiong Wu
- Department of Electrical Engineering, Tsinghua University, Beijing 100084, China.
| | - Liyang Zhang
- Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
| | - Haiyun Luo
- Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
| | - Xinxin Wang
- Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
| | - Jinfeng Tie
- PLA Center for Disease Prevention and Control, Beijing 100071, China
| | - Zhe Ren
- PLA Center for Disease Prevention and Control, Beijing 100071, China
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Qiu Z, Huang Z, Zhu L, Huang X, Wang WH, Tie J, Shen L, Shi M, Chen J, Liu M, Cheng J, Zhang J, Li Y, Wang S. A Nomogram to Predict Pathological Axillary Status in Breast Cancer Patients Treated with Neoadjuvant Chemotherapy. Int J Radiat Oncol Biol Phys 2023; 117:e202. [PMID: 37784855 DOI: 10.1016/j.ijrobp.2023.06.1080] [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: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) This study aimed to identify factors influencing axillary pathological complete response (pCR) and to develop a predictive nomogram to evaluate axillary pCR rate in breast cancer patients treated with neoadjuvant chemotherapy (NAC). MATERIALS/METHODS A total of 2368 patients who received NAC and mastectomy between 2000 and 2014 from 12 grade A tertiary hospitals in China were analyzed retrospectively. The patients treated in three cancer hospitals (training set, n = 1629) were used to construct the nomogram based on multivariate logistic regression analyses. The nomograph was validated by the area under the receiver operating characteristic curve (AUC) and calibration curve in patients from 9 other general hospitals (validation set, n = 739). RESULTS The nomogram incorporated seven predicting factors including NACT cycles, response to NACT, clinical T stage, clinical N stage, grade, LVI, and molecular subtype. The AUC for the training set and validation set were 0.762 and 0.802, respectively. In addition, the calibration curve also showed good agreement between the nomogram-based predictions and the actual observations. CONCLUSION A nomogram was established to predict the status of axillary lymph nodes in breast cancer patients after NAC. The predictive model performed well both in the training set and external validation set.
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Affiliation(s)
- Z Qiu
- Department of Radiation Oncology, National Cancer Center/ National Clinical Research Center for Cancer/ Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Z Huang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Radiation Oncology, Peking University Cancer Hospital and Institute, Beijing, China
| | - L Zhu
- Department of Radiation Oncology, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - X Huang
- Department of Radiation Oncology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - W H Wang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Radiation Oncology, Peking University Cancer Hospital and Institute, Beijing, China
| | - J Tie
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Radiation Oncology, Peking University Cancer Hospital and Institute, Beijing, China
| | - L Shen
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, China
| | - M Shi
- Department of Radiation Oncology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - J Chen
- Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - M Liu
- Department of Radiation Oncology, the First Hospital, Jilin University, Changchun, China
| | - J Cheng
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - J Zhang
- Department of Radiation Oncology, Forth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Y Li
- Department of Radiation Oncology, National Cancer Center/ National Clinical Research Center for Cancer/ Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - S Wang
- Department of Radiation Oncology, National Cancer Center/ National Clinical Research Center for Cancer/ Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Zhao X, Fang H, Jing H, Zhang N, Zhang J, Jin J, Zhong Q, Yang WF, Zhong Y, Dong L, Tie J, Wu HF, Wang XH, Lu Y, Hou X, Zhao L, Qi S, Song Y, Liu Y, Tang Y, Lu N, Chen B, Tang Y, Li Y, Wang S. Lymphocyte Count Kinetics and the Effect of Different Radiotherapy Techniques on Radiation-Induced Lymphopenia in Patients with Breast Cancer Receiving Hypofractionated Postmastectomy Radiotherapy. Int J Radiat Oncol Biol Phys 2023; 117:e216-e217. [PMID: 37784888 DOI: 10.1016/j.ijrobp.2023.06.1112] [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: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Radiation-induced lymphopenia (RIL) is associated with poor prognosis in solid tumors. This study aimed to describe the lymphocyte kinetics in patients with breast cancer receiving hypofractionated postmastectomy radiotherapy (RT) and to investigate the association of different RT techniques with RIL. MATERIALS/METHODS We assessed 607 patients who received hypofractionated postmastectomy RT for breast cancer in our prospective clinical database from 8 hospitals. All patients received irradiation to the chest wall and supraclavicular fossa. RT techniques included integrated RT with the photon-based intensity modulated techniques to irradiate all target volumes (integrated RT) and a hybrid approach combining photon irradiation to supraclavicular nodes and electron irradiation to the chest wall (hybrid RT). Peripheral lymphocyte counts (PLC) were tested prior to RT (baseline), weekly during RT, at 1, 2 weeks, 3, 6 months after RT, and then every 6 months. Grade 3+ RIL was defined as PLC nadir during RT of <0.5 ×103/ml. Mean PLC was compared by the t test. Univariate, multivariate, and propensity score matching (PSM) analyses were used to evaluate the effect of different RT techniques on grade 3+ RIL. RESULTS During RT, 121 (19.9%) of patients had grade 3+ RIL. The PLC started to recover at 1 week and reached baseline levels 1 year after RT. A greater proportion of the patients treated with the integrated RT (90/269, 33.5%) developed grade 3+ PLC compared with those receiving hybrid RT (31/338, 9.2%, P < 0.001). After conducting PSM, multivariate analyses showed lower baseline PLC (HR = 0.15, P<0.001) and RT technique (the integrated RT vs. hybrid RT, HR = 4.76, P<0.001) were independent risk factors for grade 3+ RIL. The PLC in patients receiving the integrated RT after RT were higher than that in those receiving hybrid RT (p<0.05). CONCLUSION RT technique affect the risk of and recovery from RIL, which may impact survival. Choosing appropriate RT technique to minimize RIL might be considered to benefit their outcomes.
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Affiliation(s)
- X Zhao
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - H Fang
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - H Jing
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - N Zhang
- Department of Radiation Oncology, Cancer Hospital of China Medical University, Liaoning Cancer Hospital & Institute, Shenyang, China
| | - J Zhang
- Department of Radiation Oncology, Forth Hospital of Hebei Medical University, Shijiazhuang, China
| | - J Jin
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Q Zhong
- Department of Radiation Oncology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - W F Yang
- Department of Radiation Oncology, Affiliated Taizhou hospital of Wenzhou Medical University, Taizhou, China
| | - Y Zhong
- Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - L Dong
- Department of Radiation Oncology, The First Hospital, Jilin University, Changchun, China
| | - J Tie
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Radiation Oncology, Peking University Cancer Hospital and Institute, Beijing, China
| | - H F Wu
- Department of Radiation Oncology, Jilin Cancer Hospital, Changchun, China
| | - X H Wang
- Department of Radiochemotherapy, People's Hospital of Tangshan City, Tangshan, China
| | - Y Lu
- Department of Radiation Oncology, Cancer Hospital of Henan Province, Zhengzhou, Henan, China
| | - X Hou
- Department of Radiation Oncology, Peking Union Medical College Hospital, Chinese Academy of medical Sciences & Peking Union Medical College, Beijing, China
| | - L Zhao
- Department of Radiation Oncology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - S Qi
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Y Song
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Y Liu
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Y Tang
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - N Lu
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - B Chen
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Y Tang
- GCP center/Clinical research center, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Y Li
- Department of Radiation Oncology, National Cancer Center/ National Clinical Research Center for Cancer/ Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - S Wang
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Wang DQ, Huang Z, Zhu L, Huang XB, Wang WH, Tie J, Shen L, Shi M, Chen JY, Liu M, Cheng J, Zhang J, Li YX, Wang S. Recurrence Risk Score Model for Evaluating the Impact of Postmastectomy Radiotherapy in Breast Cancer Patients with Pathologic Nodal Negative after Neoadjuvant Chemotherapy and Mastectomy. Int J Radiat Oncol Biol Phys 2023; 117:e211. [PMID: 37784877 DOI: 10.1016/j.ijrobp.2023.06.1100] [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: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Recurrence risk score model was established to distinguish the recurrent risk of patients with pathologic nodal negative (ypN0) after neoadjuvant chemotherapy (NACT) and mastectomy and determine the impact of postmastectomy radiotherapy (PMRT). MATERIALS/METHODS This multicenter retrospective study reviewed 766 patients who underwent mastectomy and NACT with ypN0 from 2000 to 2014. Recurrent risk score model was assigned proportionally to the relative contribution of independent prognostic factors in the multivariate Cox model of disease-free survival (DFS). Decision tree analysis was conducted to determine two optimal cutoff points for stratification. RESULTS The median follow-up time was 74 months. The 5-year locoregional control (LRC), DFS, and overall survival (OS) rates for the entire group were 96.5%, 89.1% and 95.3%, respectively. 353 (46.1%) patients received PMRT and 413 (53.9%) patients did not. Patients with PMRT have more high-risk factors, including age <40 years, clinical stage III, grade III, or ER and PR negative. Chest wall and regional nodal region were irradiated in 307 (87.0%) and chest wall only in 46 (13.0%). The median radiation dose was 50 Gy (range: 36-60 Gy) in 25 fractions (range: 15-30 fractions). There were no significant differences between the PMRT and No-PMRT groups in the LRC, DFS and OS rates. Recurrent risk score model consisted of five factors and used a range of zero to eleven scoring points: age <40 years and clinical N1 stage for one point; clinical N2, NACT ≥4 cycles, lymphovascular invasion and ypT1-2 for two points; ypT3-4 for four points. 456 (59.5%) patients scoring zero to four points, 188 (24.5%) scoring five points and 122 (15.9%) scoring six to eleven points were assigned to the low-, intermediate-, and high-risk group. LRC, DFS and OS rates in three risk groups were significantly distinct from each other (5yr-LRC: 98.6% vs. 95.5% vs. 89.8%, p < .001; 5yr-DFS: 94.4% vs. 87.4% vs. 71.5%, p < .001; 5yr-OS: 97.6% vs. 93.2% vs. 90.0%, p < .001). PMRT had no impact on the LRC, DFS and OS rates in either low-, intermediate-, or high-risk group. CONCLUSION The recurrence risk score model can effectively distinguish patients with different recurrent risk stratification. PMRT in patients with ypN0 after NAC and mastectomy cannot improve LRC, DFS or OS. Table 1. Survival outcomes and comparison between PMRT and No-PMRT arms in different groups.
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Affiliation(s)
- D Q Wang
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Z Huang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Radiation Oncology, Peking University Cancer Hospital and Institute, Beijing, China
| | - L Zhu
- Department of Radiation Oncology, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - X B Huang
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - W H Wang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Radiation Oncology, Peking University Cancer Hospital and Institute, Beijing, China
| | - J Tie
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Radiation Oncology, Peking University Cancer Hospital and Institute, Beijing, China
| | - L Shen
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, China
| | - M Shi
- Department of Radiation Oncology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - J Y Chen
- Department of Radiation Oncology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - M Liu
- Department of Radiation Oncology, the First Hospital, Jilin University, Changchun, China
| | - J Cheng
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - J Zhang
- Department of Radiation Oncology, Forth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Y X Li
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - S Wang
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Song Y, Hu Z, Yan XN, Fang H, Yu T, Jing H, Men K, Zhang N, Zhang J, Jin J, Zhong Q, Ma J, Yang WF, Zhong Y, Dong L, Wang XH, Wu HF, Du XH, Hou X, Tie J, Lu Y, Zhao L, Li YX, Wang S. Quality Assurance in a Phase III, Multicenter, Randomized Trial of POstmastectomy radioThErapy in Node posiTive Breast Cancer with or without Internal mAmmary nodaL Irradiation (POTENTIAL): A Planning Dummy Run. Int J Radiat Oncol Biol Phys 2023; 117:S97. [PMID: 37784615 DOI: 10.1016/j.ijrobp.2023.06.431] [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: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) To report the planning dummy run results of the POstmastectomy radioThErapy in Node posiTive breast cancer with or without Internal mAmmary nodaL irradiation (POTENTIAL) trial-a multicenter, randomized, phase 3 trial-to evaluate postmastectomy radiotherapy, with or without internal mammary nodal irradiation, for patients with high-risk breast cancer. MATERIALS/METHODS All participating institutions were provided the contours of the dummy run case, and they generated radiotherapy (RT) plans per protocol guidelines. The plans were reviewed and feedback were provided by the quality assurance team, after which the institutions resubmitted revised plans. The information on beams arrangement, skin flash, inhomogeneity corrections, and protocol compliance was assessed both in the primary and final submission. RESULTS Theplans from 26 institutions were included in the analysis. A number of major deviations were found in the primary submission, such as less strict constraint on organs at risk (OARs) V5Gy, and no application of chest wall skin flash. The protocol compliance rates of the dose coverage for the planning target volume of the chest wall (PTVcw), PTV of supra/infraclavicular fossa plus axilla levels I, II, III (PTVsc+ax), and PTV of the IMN region (PTVim) were all significantly improved in the final submission compared with those in the primary submission, which were 96.2% vs. 69.2%, 100% vs. 76.9%, and 88.4% vs. 53.8, respectively. For OARs, the protocol compliance rates of heart Dmean, left anterior descending coronary artery V40Gy, ipsilateral lung V5Gy, and stomach V5Gy were significantly improved. CONCLUSION All major deviations were corrected and protocol compliance was significantly improved and of high level in the final submission. Moreover, the variations were reduced. Therefore, a planning dummy run was essential to guarantee good RT plan quality and inter-institutional consistency for multicenter trials.
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Affiliation(s)
- Y Song
- Department of Radiation Oncology, National Cancer Center/ National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Z Hu
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - X N Yan
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - H Fang
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - T Yu
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - H Jing
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - K Men
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - N Zhang
- 2. Department of Radiation Oncology, Cancer Hospital of China Medical University, Liaoning Cancer Hospital & Institute, Shenyang, Liaoning, China
| | - J Zhang
- Department of Radiation Oncology, Forth Hospital of Hebei Medical University, Shijiazhuang, China
| | - J Jin
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Q Zhong
- Department of Radiation Oncology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - J Ma
- Department of Radiation Oncology, Jiangsu Province Hospital of Chinese medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China
| | - W F Yang
- Department of Radiation Oncology, Affiliated Taizhou hospital of Wenzhou Medical University, Taizhou, China
| | - Y Zhong
- Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - L Dong
- Department of Radiation Oncology, The First Hospital, Jilin University, Changchun, China
| | - X H Wang
- Department of Radiochemotherapy, People's Hospital of Tangshan City, Tangshan, China
| | - H F Wu
- Department of Radiation Oncology, Jilin Cancer Hospital, Changchun, China
| | - X H Du
- Department of Radiation Oncology, Zhejiang Cancer Hospital, Hangzhou, China
| | - X Hou
- Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - J Tie
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Radiation Oncology, Peking University Cancer Hospital and Institute, Beijing, China
| | - Y Lu
- Department of Radiation Oncology, Cancer Hospital of Henan Province, Zhengzhou, Henan, China
| | - L Zhao
- Department of Radiation Oncology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Y X Li
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - S Wang
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Zhang L, Guo Y, Tie J, Yao Z, Feng Z, Wu Q, Wang X, Luo H. Grating-like DBD plasma for air disinfection: Dose and dose-response characteristics. J Hazard Mater 2023; 447:130780. [PMID: 36669408 DOI: 10.1016/j.jhazmat.2023.130780] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 01/02/2023] [Accepted: 01/10/2023] [Indexed: 06/17/2023]
Abstract
Atmospheric pressure dielectric barrier discharge (DBD) plasma is an emerging technique for effective bioaerosol decontamination and is promising to be used in indoor environments to reduce infections. However, fundamental knowledge of the dose and dose-response characteristics of plasma-based disinfection technology is very limited. By examining the single-pass removal efficiency of S. lentus aerosol by in-duct grating-like DBD plasma reactors with varied discharge setups (gap distance, electrode size, number of discharge layers, frequency, dielectric material), it was found that the specific input energy (SIE) could be served as the dose for disinfection, and the efficiency was exponentially dependent on SIE in most cases. The corresponding susceptibility constants (Z values) were obtained hereinafter. Humidity was a prominent factor boosting the efficiency with a Z value of 0.36 L/J at relative humidity (RH) of 20% and 1.68 L/J at RH of 60%. MS2 phage showed a much higher efficiency of 2.66-3.08 log10 of reduction than those of S. lentus (38-85%) and E. coli (42%-95%) under the same condition. Using SIE as the dose, the performance of plasma reactors in the literature was compared and evaluated. This work provides a theoretical and engineering basis for air disinfection by plasma-based technology.
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Affiliation(s)
- Liyang Zhang
- Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
| | - Yuntao Guo
- Department of Electrical Engineering, Tsinghua University, Beijing 100084, China.
| | - Jinfeng Tie
- Disinfection and Infection Control, Chinese PLA Center for Disease Prevention and Control, Beijing 100071, China.
| | - Zenghui Yao
- Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
| | - Zihao Feng
- Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
| | - Qiong Wu
- Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
| | - Xinxin Wang
- Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
| | - Haiyun Luo
- Department of Electrical Engineering, Tsinghua University, Beijing 100084, China.
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Segal N, Tie J, Kopetz S, Ducreux M, Chen E, Dienstmann R, Hollebecque A, Reilley M, Elez Fernandez M, Cosaert J, Cain J, Hernandez M, Hewson N, Cooper Z, Dressman M, Tabernero J. 160P COLUMBIA-1: A phase Ib/II, open-label, randomized, multicenter study of durvalumab plus oleclumab in combination with chemotherapy and bevacizumab as first-line (1L) therapy in metastatic microsatellite-stable colorectal cancer (MSS-mCRC). Immuno-Oncology and Technology 2022. [DOI: 10.1016/j.iotech.2022.100272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Tie J, Cohen J, Lahouel K, Lo S, Wang Y, Wong R, Shapiro J, Harris S, Khattak A, Burge M, Horvath L, Karapetis C, Shannon J, Singh M, Yip D, Papadopoulos N, Tomasetti C, Kinzler K, Vogelstein B, Gibbs P. 318MO Circulating tumour DNA (ctDNA) dynamics, CEA and sites of recurrence for the randomised DYNAMIC study: Adjuvant chemotherapy (ACT) guided by ctDNA analysis in stage II colon cancer (CC). Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.456] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Tabernero J, Yoshino T, Kim T, Yaeger R, Desai J, Wasan H, Van Cutsem E, Ciardiello F, Maughan T, Eng C, Tie J, Fernandez ME, Lonardi S, Zhang X, Chavira R, Usari T, Hahn E, Kopetz S. LBA26 BREAKWATER safety lead-in (SLI): Encorafenib (E) + cetuximab (C) + chemotherapy (chemo) for BRAFV600E metastatic colorectal cancer (mCRC). Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.08.022] [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] Open
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Salem M, Kopetz S, El-Refai S, Tabernero J, Sinicrope F, Tie J, George T, Van Cutsem E, Mauer E, Lonardi S, André T, Overman M, Foureau D. LBA SO-34 Impact of BRAF-V600E mutation on immunologic characteristics of the tumor microenvironment (TME) and associated genomic alterations in patients with microsatellite instability-high (MSI-H) or mismatch-repair–deficient (dMMR) colorectal cancer (CRC). Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.04.441] [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: 11/01/2022] Open
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11
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Alexander M, Harris S, Underhill C, Torres J, Sharma S, Lee N, Wong H, Eek R, Michael M, Tie J, Rogers J, Heriot A, Ball D, MacManus M, Wolfe R, Solomon B, Burbury K. PO-44: Risk assessment model potency to detect patients most likely to benefit from thromboprophylaxis: an application of the TARGET- TP score. Thromb Res 2022. [DOI: 10.1016/s0049-3848(22)00234-1] [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: 11/25/2022]
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12
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Alexander M, Harris S, Underhill C, Torres J, Sharma S, Lee N, Wong H, Eek R, Michael M, Tie J, Rogers J, Heriot A, Ball D, MacManus M, Wolfe R, Solomon B, Burbury K. OC-15: Targeted thromboprophylaxis in ambulatory patients receiving anticancer therapies for lung or gastrointestinal cancers (TARGET-TP); a randomized trial. Thromb Res 2022. [DOI: 10.1016/s0049-3848(22)00187-6] [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: 10/18/2022]
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13
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Jalali A, Gard G, Banks S, Dunn C, Wong HL, Wong R, Lee M, Gately L, Loft M, Shapiro JD, Kosmider S, Tie J, Ananda S, Yeung JM, Jennens R, Lee B, McKendrick J, Lim L, Khattak A, Gibbs P. Initial experience of TAS-102 chemotherapy in Australian patients with Chemo-refractory metastatic colorectal cancer. Curr Probl Cancer 2021; 46:100793. [PMID: 34565601 DOI: 10.1016/j.currproblcancer.2021.100793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 08/09/2021] [Accepted: 08/20/2021] [Indexed: 11/24/2022]
Abstract
For patients with refractory metastatic colorectal cancer (mCRC) treatment with Trifluridine/Tipiracil, also known as TAS-102, improves overall survival. This study aims to investigate the efficacy and safety of TAS-102 in a real-world population from Victoria, Australia. A retrospective analysis of prospectively collected data from the Treatment of Recurrent and Advanced Colorectal Cancer (TRACC) registry was undertaken. The characteristics and outcomes of patients receiving TAS-102 were assessed and compared to those enrolled in the registration study (RECOURSE). Across 13 sites, 107 patients were treated with TAS-102. The median age was 60 years (range: 31-83), compared to 63 for RECOURSE. Comparing registry TAS-102-treated and RECOURSE patients, 75% vs 100% were ECOG performance status 0-1, 74% vs 79% had initiated treatment more than 18 months from diagnosis of metastatic disease and 36% vs 49% were RAS wild-type. Median time on treatment was 10.4 weeks (range: 1.7-32). Median progression-free survival (PFS) was 3.3 months compared to 2 months in RECOURSE, while median overall survival was the same at 7.1 months. Two patients (2.3%) had febrile neutropenia and there were no treatment-related deaths, where TAS-102 dose at treatment initiation was at clinician discretion.TRACC registry patients treated with TAS-102 were younger than those from the RECOURSE trial, with similar overall survival observed. Less strict application of RECIST criteria and less frequent imaging may have contributed to an apparently longer PFS.
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Affiliation(s)
- A Jalali
- Division of Personalised Oncology, Walter and Eliza Hall Institute of Medical Research, VIC, Australia; Department of Medical Oncology, Western Health, VIC, Australia; Department of Medical Oncology, Latrobe Regional Hospital, VIC, Australia.
| | - G Gard
- Division of Personalised Oncology, Walter and Eliza Hall Institute of Medical Research, VIC, Australia
| | - S Banks
- Division of Personalised Oncology, Walter and Eliza Hall Institute of Medical Research, VIC, Australia
| | - C Dunn
- Division of Personalised Oncology, Walter and Eliza Hall Institute of Medical Research, VIC, Australia
| | - H L Wong
- Division of Personalised Oncology, Walter and Eliza Hall Institute of Medical Research, VIC, Australia; Department of Medical Oncology, Peter MacCallum Cancer Centre, VIC, Australia
| | - R Wong
- Division of Personalised Oncology, Walter and Eliza Hall Institute of Medical Research, VIC, Australia; Department of Medical Oncology, Eastern Health, VIC, Australia; Eastern Health Clinical School, Monash University, VIC, Australia
| | - M Lee
- Division of Personalised Oncology, Walter and Eliza Hall Institute of Medical Research, VIC, Australia; Department of Medical Oncology, Western Health, VIC, Australia; Department of Medical Oncology, Eastern Health, VIC, Australia; Eastern Health Clinical School, Monash University, VIC, Australia
| | - L Gately
- Division of Personalised Oncology, Walter and Eliza Hall Institute of Medical Research, VIC, Australia
| | - M Loft
- Division of Personalised Oncology, Walter and Eliza Hall Institute of Medical Research, VIC, Australia
| | - J D Shapiro
- Department of Medical Oncology, Cabrini Hospital, VIC, Australia
| | - S Kosmider
- Department of Medical Oncology, Western Health, VIC, Australia
| | - J Tie
- Division of Personalised Oncology, Walter and Eliza Hall Institute of Medical Research, VIC, Australia; Department of Medical Oncology, Western Health, VIC, Australia; Department of Medical Oncology, Peter MacCallum Cancer Centre, VIC, Australia
| | - S Ananda
- Division of Personalised Oncology, Walter and Eliza Hall Institute of Medical Research, VIC, Australia; Department of Medical Oncology, Western Health, VIC, Australia; Department of Medical Oncology, Peter MacCallum Cancer Centre, VIC, Australia; Department of Medical Oncology, Epworth Health, VIC, Australia
| | - J M Yeung
- Department of Surgery, Western Health, University of Melbourne, VIC, Australia; Western Health Chronic Disease Alliance, Western Health, VIC, Australia
| | - R Jennens
- Department of Medical Oncology, Epworth Health, VIC, Australia
| | - B Lee
- Division of Personalised Oncology, Walter and Eliza Hall Institute of Medical Research, VIC, Australia; Department of Medical Oncology, Peter MacCallum Cancer Centre, VIC, Australia; Department of Medical Oncology, Northern Health, VIC, Australia
| | - J McKendrick
- Department of Medical Oncology, Eastern Health, VIC, Australia; Department of Medical Oncology, Epworth Health, VIC, Australia
| | - L Lim
- Department of Medical Oncology, Eastern Health, VIC, Australia
| | - A Khattak
- Department of Medical Oncology, Fiona Stanley Hospital, WA, Australia
| | - P Gibbs
- Division of Personalised Oncology, Walter and Eliza Hall Institute of Medical Research, VIC, Australia; Department of Medical Oncology, Western Health, VIC, Australia
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Tebbutt N, Burge M, Underhill C, Farrell M, Xie S, Nagrial A, Pavlakis N, Strickland A, Chong G, Tie J, Wong R, Price T. 435P The AGITG Modulate study: Randomised phase II study testing manipulation of the tumour micro environment (TME) to enable synergy with PD1 inhibitors in microsatellite stable (MSS) metastatic colorectal cancer (mCRC). Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.956] [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: 11/24/2022] Open
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15
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Wang H, Zhang L, Luo H, Wang X, Tie J, Ren Z. Sterilizing Processes and Mechanisms for Treatment of Escherichia coli with Dielectric-Barrier Discharge Plasma. Appl Environ Microbiol 2019; 86:e01907-19. [PMID: 31628146 PMCID: PMC6912084 DOI: 10.1128/aem.01907-19] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Accepted: 10/13/2019] [Indexed: 11/20/2022] Open
Abstract
With increasing attention toward novel sterilization methods, plasma sterilization has gained more and more interest. However, the underlying mechanisms are still unknown. In this paper, we investigated the inactivation of Escherichia coli using dielectric-barrier discharge (DBD) plasma in saline water. There were three processes shown in the survival curve, namely, during the preparation period, the reaction period, and the saturation period. Observations under a transmission electron microscope (TEM) and detection by Fourier transform infrared spectroscopy (FT-IR) supplied adequate details regarding these processes. Based on these results, we infer that during the preparation period, the main process is the accumulation of chemical substances. During the reaction period, adequate amounts of chemicals decompose and denature cell membranes and macromolecules to kill bacteria in large quantities. During the saturation period, the killing effect decreases because of the protection by clustered cells and the saturation of pH. This study of sterilizing processes systematically reveals the mechanisms of plasma sterilization.IMPORTANCE Compared with traditional methods, plasma sterilization has advantages of high efficiency, easy operation, and environmental protection. This may be more suitable for air and sewage sterilization in specific spaces, such as hospitals, laboratories, and pharmaceutical factories. However, the mechanisms of sterilization are still relatively unknown, especially for bactericidal activities. Knowledge of sterilization processes provides guidance for practical applications. For example, the bactericidal action mainly occurs during the reaction period, and the treatment time can be set based on the reaction period, which could save a lot of energy. The results of this study will help to improve the efficiency of plasma sterilization devices.
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Affiliation(s)
- Hao Wang
- Department of Electrical Engineering, Tsinghua University, Beijing, China
| | - Liyang Zhang
- Department of Electrical Engineering, Tsinghua University, Beijing, China
| | - Haiyun Luo
- Department of Electrical Engineering, Tsinghua University, Beijing, China
| | - Xinxin Wang
- Department of Electrical Engineering, Tsinghua University, Beijing, China
| | - Jinfeng Tie
- PLA Center for Disease Prevention and Control, Beijing, China
| | - Zhe Ren
- PLA Center for Disease Prevention and Control, Beijing, China
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Yang L, Men WL, Yan KM, Tie J, Nie YZ, Xiao HJ. MiR-340-5p is a potential prognostic indicator of colorectal cancer and modulates ANXA3. Eur Rev Med Pharmacol Sci 2019; 22:4837-4845. [PMID: 30070320 DOI: 10.26355/eurrev_201808_15619] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE MicroRNAs (miRNAs) are increasingly recognized as oncogenes or tumor suppressors in colorectal cancer (CRC). The aim of this study was to explore the expression and functions of miR-340-5p in CRC. PATIENTS AND METHODS The expression of miR-340-5p in CRC tissues and cell lines was detected by quantitative RT-PCR. Associations of miR-340-5p expression with clinicopathological factors and overall survival (OS) and progression-free survival (PFS) were statistically evaluated. Luciferase assay, RT-PCR, and Western blot were performed to verify the precise target of miR-340-5p. MTT assay, colony formation and transwell assay were performed to determine the proliferation, migration and invasion, respectively. RESULTS Our results showed that miR-340-5p was significantly down-regulated in CRC tissues and cell lines, and was associated with histological grade (p=0.020), lymph nodes metastasis (p=0.003) and TNM stage (p=0.007). Furthermore, Kaplan-Meier and log-rank tests revealed that patients with low expression of miR-340-5p had a shorter OS (p=0.0110) and PFS (p=0.0032) than those with high expression of miR-340-5p. We further validated Annexin A3 (ANXA3) was a direct target of miR-340-5p in CRC. The functional assay showed that up-regulation of miR-340-5p or down-regulation of ANXA3 can both inhibit CRC cell proliferation, migration, and invasion. Besides, the re-expression of ANXA3 reversed the miR-340-5p induced suppression of cell proliferation, migration and invasion. CONCLUSIONS Our data demonstrated that miR-340-5p exerted its tumor-suppressive function by directly targeting ANXA3 in CRC, suggesting that miR-340-5p might represent a novel prognostic biomarker and therapeutic target for CRC.
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Affiliation(s)
- L Yang
- Department of General Surgery, Xianyang Central Hospital, Xianyang, Shaanxi, China.
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Lee B, Lipton L, Cohen J, Tie J, Javed AA, Li L, Goldstein D, Burge M, Cooray P, Nagrial A, Tebbutt NC, Thomson B, Nikfarjam M, Harris M, Haydon A, Lawrence B, Tai DWM, Simons K, Lennon AM, Wolfgang CL, Tomasetti C, Papadopoulos N, Kinzler KW, Vogelstein B, Gibbs P. Circulating tumor DNA as a potential marker of adjuvant chemotherapy benefit following surgery for localized pancreatic cancer. Ann Oncol 2019; 30:1472-1478. [PMID: 31250894 PMCID: PMC6771221 DOI: 10.1093/annonc/mdz200] [Citation(s) in RCA: 118] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND In early-stage pancreatic cancer, there are currently no biomarkers to guide selection of therapeutic options. This prospective biomarker trial evaluated the feasibility and potential clinical utility of circulating tumor DNA (ctDNA) analysis to inform adjuvant therapy decision making. MATERIALS AND METHODS Patients considered by the multidisciplinary team to have resectable pancreatic adenocarcinoma were enrolled. Pre- and post-operative samples for ctDNA analysis were collected. PCR-based-SafeSeqS assays were used to identify mutations at codon 12, 13 and 61 of KRAS in the primary pancreatic tumor and to detect ctDNA. Results of ctDNA analysis were correlated with CA19-9, recurrence-free and overall survival (OS). Patient management was per standard of care, blinded to ctDNA data. RESULTS Of 112 patients consented pre-operatively, 81 (72%) underwent resection. KRAS mutations were identified in 91% (38/42) of available tumor samples. Of available plasma samples (N = 42), KRAS mutated ctDNA was detected in 62% (23/37) pre-operative and 37% (13/35) post-operative cases. At a median follow-up of 38.4 months, ctDNA detection in the pre-operative setting was associated with inferior recurrence-free survival (RFS) [hazard ratio (HR) 4.1; P = 0.002)] and OS (HR 4.1; P = 0.015). Detectable ctDNA following curative intent resection was associated with inferior RFS (HR 5.4; P < 0.0001) and OS (HR 4.0; P = 0.003). Recurrence occurred in 13/13 (100%) patients with detectable ctDNA post-operatively, including in seven that received gemcitabine-based adjuvant chemotherapy. CONCLUSION ctDNA studies in localized pancreatic cancer are challenging, with a substantial number of patients not able to undergo resection, not having sufficient tumor tissue for analysis or not completing per protocol sample collection. ctDNA analysis, pre- and/or post-surgery, is a promising prognostic marker. Studies of ctDNA guided therapy are justified, including of treatment intensification strategies for patients with detectable ctDNA post-operatively who appear at very high risk of recurrence despite gemcitabine-based adjuvant therapy.
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Affiliation(s)
- B Lee
- Division of Systems Biology and Personalised Medicine, Walter & Eliza Hall Institute (WEHI), Melbourne; Department of Medical Oncology, Royal Melbourne Hospital, Melbourne; Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Melbourne.
| | - L Lipton
- Department of Medical Oncology, Royal Melbourne Hospital, Melbourne; Department of Medical Oncology, Western Health, Melbourne; Department of Medical Oncology, Cabrini Health, Malvern, Australia
| | - J Cohen
- Ludwig Centre and Howard Hughes Medical Institute at Johns Hopkins Kimmel Cancer Centre, Baltimore
| | - J Tie
- Division of Systems Biology and Personalised Medicine, Walter & Eliza Hall Institute (WEHI), Melbourne; Department of Medical Oncology, Royal Melbourne Hospital, Melbourne; Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Melbourne; Department of Medical Oncology, Western Health, Melbourne
| | - A A Javed
- Ludwig Centre and Howard Hughes Medical Institute at Johns Hopkins Kimmel Cancer Centre, Baltimore
| | - L Li
- Division of Biostatistics and Bioinformatics, Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, USA
| | - D Goldstein
- Department of Medical Oncology, Prince of Wales Hospital, Randwick
| | - M Burge
- Department of Medical Oncology, Royal Brisbane Hospital, Brisbane
| | - P Cooray
- Department of Medical Oncology, Eastern Health, Melbourne
| | - A Nagrial
- Department of Medical Oncology, Crown Princess Mary Cancer Centre Westmead, Westmead
| | - N C Tebbutt
- Department of Medical Oncology, Olivia Newton-John Cancer and Wellness Centre, Melbourne
| | - B Thomson
- Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Melbourne; Department of Surgery, Royal Melbourne Hospital, Melbourne
| | - M Nikfarjam
- Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Melbourne; Department of Medical Oncology, Olivia Newton-John Cancer and Wellness Centre, Melbourne
| | - M Harris
- Department of Medical Oncology, Monash Medical Centre, Clayton
| | - A Haydon
- Department of Medical Oncology, Alfred Hospital, Melbourne, Australia
| | - B Lawrence
- Department of Medical Oncology, Auckland City Hospital, Auckland, New Zealand
| | - D W M Tai
- Department of Medical Oncology, National Cancer Centre, Singapore
| | - K Simons
- Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Melbourne; Centre for Epidemiology & Biostatistics, University of Melbourne, Melbourne, Australia
| | - A M Lennon
- Ludwig Centre and Howard Hughes Medical Institute at Johns Hopkins Kimmel Cancer Centre, Baltimore
| | - C L Wolfgang
- Ludwig Centre and Howard Hughes Medical Institute at Johns Hopkins Kimmel Cancer Centre, Baltimore
| | - C Tomasetti
- Ludwig Centre and Howard Hughes Medical Institute at Johns Hopkins Kimmel Cancer Centre, Baltimore; Division of Biostatistics and Bioinformatics, Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, USA
| | - N Papadopoulos
- Ludwig Centre and Howard Hughes Medical Institute at Johns Hopkins Kimmel Cancer Centre, Baltimore
| | - K W Kinzler
- Ludwig Centre and Howard Hughes Medical Institute at Johns Hopkins Kimmel Cancer Centre, Baltimore
| | - B Vogelstein
- Ludwig Centre and Howard Hughes Medical Institute at Johns Hopkins Kimmel Cancer Centre, Baltimore
| | - P Gibbs
- Division of Systems Biology and Personalised Medicine, Walter & Eliza Hall Institute (WEHI), Melbourne; Department of Medical Oncology, Royal Melbourne Hospital, Melbourne; Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Melbourne; Department of Medical Oncology, Western Health, Melbourne
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18
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Wang B, Liu J, Huang L, Zhou X, Meng Q, Tie J, Fan H, Li C, Liu Z. Novel Cardiac Protective Agent AFC1 Attenuated Ischaemic Reperfusion-Induced Ventricular Remodelling by Inhibiting the Platelet-Derived Growth Factor Receptor and JAK/STAT Pathways. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.164] [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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19
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Xu B, Wei Q, Mettetal MR, Han J, Rau L, Tie J, May RM, Pathe ET, Reddy ST, Sullivan L, Parker AE, Maul DH, Brennan AB, Mann EE. Surface micropattern reduces colonization and medical device-associated infections. J Med Microbiol 2017; 66:1692-1698. [PMID: 28984233 DOI: 10.1099/jmm.0.000600] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
PURPOSE Surface microtopography offers a promising approach for infection control. The goal of this study was to provide evidence that micropatterned surfaces significantly reduce the potential risk of medical device-associated infections. METHODOLOGY Micropatterned and smooth surfaces were challenged in vitro against the colonization and transference of two representative bacterial pathogens - Staphylococcus aureus and Pseudomonas aeruginosa. A percutaneous rat model was used to assess the effectiveness of the micropattern against device-associated S. aureus infections. After the percutaneous insertion of silicone rods into (healthy or immunocompromised) rats, their backs were inoculated with S. aureus. The bacterial burdens were determined in tissues under the rods and in the spleens. RESULTS The micropatterns reduced adherence by S. aureus (92.3 and 90.5 % reduction for flat and cylindrical surfaces, respectively), while P. aeruginosa colonization was limited by 99.9 % (flat) and 95.5 % (cylindrical). The micropatterned surfaces restricted transference by 95.1 % for S. aureus and 94.9 % for P. aeruginosa, compared to smooth surfaces. Rats with micropatterned devices had substantially fewer S. aureus in subcutaneous tissues (91 %) and spleens (88 %) compared to those with smooth ones. In a follow-up study, immunocompromised rats with micropatterned devices had significantly lower bacterial burdens on devices (99.5 and 99.9 % reduction on external and internal segments, respectively), as well as in subcutaneous tissues (97.8 %) and spleens (90.7 %) compared to those with smooth devices. CONCLUSION Micropatterned surfaces exhibited significantly reduced colonization and transference in vitro, as well as lower bacterial burdens in animal models. These results indicate that introducing this micropattern onto surfaces has high potential to reduce medical device-associated infections.
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Affiliation(s)
- Binjie Xu
- Sharklet Technologies, Inc., Aurora, CO, USA
| | - Qiuhua Wei
- Institute of Disease Prevention and Control, Academy of Military Medical Sciences of People's Liberation Army of China, Beijing, PR China
| | | | - Jie Han
- Institute of Disease Prevention and Control, Academy of Military Medical Sciences of People's Liberation Army of China, Beijing, PR China
| | - Lindsey Rau
- PreClinical Research Services, Inc., Fort Collins, CO, USA
| | - Jinfeng Tie
- Institute of Disease Prevention and Control, Academy of Military Medical Sciences of People's Liberation Army of China, Beijing, PR China
| | - Rhea M May
- Sharklet Technologies, Inc., Aurora, CO, USA
- Present address: Medtronics, 6135 Gunbarrel Ave, Boulder, CO, 80301, USA
| | | | | | - Lauren Sullivan
- Veterinarian Teaching Hospital, Colorado State University, Fort Collins, CO, USA
| | - Albert E Parker
- Department of Mathematical Sciences, Center for Biofilm Engineering, Montana State University, Bozeman, MT, USA
| | - Donald H Maul
- PreClinical Research Services, Inc., Fort Collins, CO, USA
| | - Anthony B Brennan
- Department of Materials Science and Engineering and J. Clayton Pruitt Department of Biomedical Engineering, University of Florida, Gainesville, FL, USA
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Rohr UP, Herrmann P, Ilm K, Zhang H, Lohmann S, Reiser A, Muranyi A, Smith J, Burock S, Osterland M, Leith K, Singh S, Brunhoeber P, Bowermaster R, Tie J, Christie M, Wong HL, Waring P, Shanmugam K, Gibbs P, Stein U. Prognostic value of MACC1 and proficient mismatch repair status for recurrence risk prediction in stage II colon cancer patients: the BIOGRID studies. Ann Oncol 2017; 28:1869-1875. [DOI: 10.1093/annonc/mdx207] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
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Ananda S, Wong H, Faragher I, Jones IT, Steele M, Kosmider S, Desai J, Tie J, Field K, Wong R, Tran B, Bae S, Gibbs P. Survival impact of the Australian National Bowel Cancer Screening Programme. Intern Med J 2016; 46:166-71. [DOI: 10.1111/imj.12916] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Revised: 09/13/2015] [Accepted: 09/18/2015] [Indexed: 12/31/2022]
Affiliation(s)
- S. Ananda
- Department of Medical Oncology; Royal Melbourne Hospital; Melbourne Victoria Australia
- Department of Medical Oncology; Western Health; Melbourne Victoria Australia
| | - H. Wong
- Department of Medical Oncology; Royal Melbourne Hospital; Melbourne Victoria Australia
- Research; Walter and Eliza Hall Institute,; Melbourne Victoria Australia
| | - I. Faragher
- Department of Medical Oncology; Western Health; Melbourne Victoria Australia
| | - I. T. Jones
- Department of Medical Oncology; Royal Melbourne Hospital; Melbourne Victoria Australia
| | - M. Steele
- Department of Surgery; Eastern Health- Box Hill Hospital; Melbourne Victoria Australia
| | - S. Kosmider
- Department of Medical Oncology; Western Health; Melbourne Victoria Australia
| | - J. Desai
- Department of Medical Oncology; Royal Melbourne Hospital; Melbourne Victoria Australia
- Research; Walter and Eliza Hall Institute,; Melbourne Victoria Australia
| | - J. Tie
- Department of Medical Oncology; Royal Melbourne Hospital; Melbourne Victoria Australia
- Department of Medical Oncology; Western Health; Melbourne Victoria Australia
- Research; Walter and Eliza Hall Institute,; Melbourne Victoria Australia
| | - K. Field
- Department of Medical Oncology; Royal Melbourne Hospital; Melbourne Victoria Australia
| | - R. Wong
- Department of Surgery; Eastern Health- Box Hill Hospital; Melbourne Victoria Australia
| | - B. Tran
- Department of Medical Oncology; Royal Melbourne Hospital; Melbourne Victoria Australia
- Department of Medical Oncology; Western Health; Melbourne Victoria Australia
- Research; Walter and Eliza Hall Institute,; Melbourne Victoria Australia
| | - S. Bae
- Research; BioGrid Australia; Melbourne Victoria Australia
| | - P. Gibbs
- Department of Medical Oncology; Royal Melbourne Hospital; Melbourne Victoria Australia
- Department of Medical Oncology; Western Health; Melbourne Victoria Australia
- Research; Walter and Eliza Hall Institute,; Melbourne Victoria Australia
- Research; BioGrid Australia; Melbourne Victoria Australia
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Gibbs P, Tie J, Ghosh P, Muranyi A, Brunhoeber P, Singh S, LaFluer B, Xu C, Leith K, Tran B, Desai J, Martinez R, Goel A, Waring P, Hu S, Teichgraeber V, Rohr U, Ridder R, Shanmugam K. 2160 GIV as a novel marker of recurrence risk in MMR proficient stage II colon cancer. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)31081-4] [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: 10/22/2022]
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23
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Tie J, Kinde I, Wang Y, Wong HL, Roebert J, Christie M, Tacey M, Wong R, Singh M, Karapetis CS, Desai J, Tran B, Strausberg RL, Diaz LA, Papadopoulos N, Kinzler KW, Vogelstein B, Gibbs P. Circulating tumor DNA as an early marker of therapeutic response in patients with metastatic colorectal cancer. Ann Oncol 2015; 26:1715-22. [PMID: 25851626 DOI: 10.1093/annonc/mdv177] [Citation(s) in RCA: 451] [Impact Index Per Article: 50.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Accepted: 03/20/2015] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Early indicators of treatment response in metastatic colorectal cancer (mCRC) could conceivably be used to optimize treatment. We explored early changes in circulating tumor DNA (ctDNA) levels as a marker of therapeutic efficacy. PATIENTS AND METHODS This prospective study involved 53 mCRC patients receiving standard first-line chemotherapy. Both ctDNA and CEA were assessed in plasma collected before treatment, 3 days after treatment and before cycle 2. Computed tomography (CT) scans were carried out at baseline and 8-10 weeks and were centrally assessed using RECIST v1.1 criteria. Tumors were sequenced using a panel of 15 genes frequently mutated in mCRC to identify candidate mutations for ctDNA analysis. For each patient, one tumor mutation was selected to assess the presence and the level of ctDNA in plasma samples using a digital genomic assay termed Safe-SeqS. RESULTS Candidate mutations for ctDNA analysis were identified in 52 (98.1%) of the tumors. These patient-specific candidate tissue mutations were detectable in the cell-free DNA from the plasma of 48 of these 52 patients (concordance 92.3%). Significant reductions in ctDNA (median 5.7-fold; P < 0.001) levels were observed before cycle 2, which correlated with CT responses at 8-10 weeks (odds ratio = 5.25 with a 10-fold ctDNA reduction; P = 0.016). Major reductions (≥10-fold) versus lesser reductions in ctDNA precycle 2 were associated with a trend for increased progression-free survival (median 14.7 versus 8.1 months; HR = 1.87; P = 0.266). CONCLUSIONS ctDNA is detectable in a high proportion of treatment naïve mCRC patients. Early changes in ctDNA during first-line chemotherapy predict the later radiologic response.
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Affiliation(s)
- J Tie
- Division of Systems Biology and Personalised Medicine, Walter and Eliza Hall Institute of Medical Research, Melbourne Department of Medical Oncology, Western Hospital, Melbourne Department of Medical Oncology, The Royal Melbourne Hospital, Melbourne Faculty of Medicine Dentistry and Health Sciences, The University of Melbourne, Melbourne, Australia
| | - I Kinde
- Ludwig Center for Cancer Genetics and Therapeutics, Howard Hughes Medical Institute at Johns Hopkins Kimmel Cancer Center, Baltimore, USA
| | - Y Wang
- Ludwig Center for Cancer Genetics and Therapeutics, Howard Hughes Medical Institute at Johns Hopkins Kimmel Cancer Center, Baltimore, USA
| | - H L Wong
- Division of Systems Biology and Personalised Medicine, Walter and Eliza Hall Institute of Medical Research, Melbourne Department of Medical Oncology, The Royal Melbourne Hospital, Melbourne Faculty of Medicine Dentistry and Health Sciences, The University of Melbourne, Melbourne, Australia Faculty of Medicine, Nursing and Health Sciences, Monash University, Eastern Health Clinical School, Melbourne
| | | | - M Christie
- Division of Systems Biology and Personalised Medicine, Walter and Eliza Hall Institute of Medical Research, Melbourne Department of Medical Oncology, The Royal Melbourne Hospital, Melbourne Faculty of Medicine Dentistry and Health Sciences, The University of Melbourne, Melbourne, Australia
| | - M Tacey
- Melbourne EpiCentre, Department of Medicine, The University of Melbourne, Melbourne
| | - R Wong
- Faculty of Medicine, Nursing and Health Sciences, Monash University, Eastern Health Clinical School, Melbourne
| | - M Singh
- Andrew Love Cancer Centre, Barwon Health, Geelong
| | - C S Karapetis
- Department of Medical Oncology, Flinders University, Adelaide, Australia
| | - J Desai
- Division of Systems Biology and Personalised Medicine, Walter and Eliza Hall Institute of Medical Research, Melbourne Department of Medical Oncology, The Royal Melbourne Hospital, Melbourne Faculty of Medicine Dentistry and Health Sciences, The University of Melbourne, Melbourne, Australia
| | - B Tran
- Division of Systems Biology and Personalised Medicine, Walter and Eliza Hall Institute of Medical Research, Melbourne Department of Medical Oncology, Western Hospital, Melbourne Department of Medical Oncology, The Royal Melbourne Hospital, Melbourne Faculty of Medicine Dentistry and Health Sciences, The University of Melbourne, Melbourne, Australia
| | | | - L A Diaz
- Ludwig Center for Cancer Genetics and Therapeutics, Howard Hughes Medical Institute at Johns Hopkins Kimmel Cancer Center, Baltimore, USA
| | - N Papadopoulos
- Ludwig Center for Cancer Genetics and Therapeutics, Howard Hughes Medical Institute at Johns Hopkins Kimmel Cancer Center, Baltimore, USA
| | - K W Kinzler
- Ludwig Center for Cancer Genetics and Therapeutics, Howard Hughes Medical Institute at Johns Hopkins Kimmel Cancer Center, Baltimore, USA
| | - B Vogelstein
- Ludwig Center for Cancer Genetics and Therapeutics, Howard Hughes Medical Institute at Johns Hopkins Kimmel Cancer Center, Baltimore, USA
| | - P Gibbs
- Division of Systems Biology and Personalised Medicine, Walter and Eliza Hall Institute of Medical Research, Melbourne Department of Medical Oncology, Western Hospital, Melbourne Department of Medical Oncology, The Royal Melbourne Hospital, Melbourne Faculty of Medicine Dentistry and Health Sciences, The University of Melbourne, Melbourne, Australia Ludwig Institute for Cancer Research, New York, USA Ludwig Institute for Cancer Research, Melbourne, Australia
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Gibbs P, Ghosh P, Waring P, Lafleur B, Muranyi A, Singh S, Brunhoeber P, Tie J, Tran B, Desai J, Martinez R, Janssen K, Goel A, Hu S, Teichgräber V, Rohr U, Ridder R, Shanmugam K. Giv As a Novel Prognostic Marker in Stage Ii Colon Cancer. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu333.71] [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: 11/13/2022] Open
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Field K, Wong HL, Shapiro J, Kosmider S, Tie J, Bae S, Yip D, McKendrick J, Nott L, Desai J, Harold M, Lipton L, Stefanou G, Lim L, Parente P, Gibbs P. Developing a national database for metastatic colorectal cancer management: perspectives and challenges. Intern Med J 2014; 43:1224-31. [PMID: 23834128 DOI: 10.1111/imj.12230] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2013] [Accepted: 06/27/2013] [Indexed: 02/06/2023]
Abstract
BACKGROUND The changing treatment landscape for metastatic colorectal cancer creates multiple potential treatment strategies. An Australian-centric database capturing comprehensive information across a range of treatment locations would create a valuable resource enabling multiple important research questions to be addressed. AIMS To establish a collection of a consensus dataset capturing treatment and outcomes at multiple public and private hospitals across Australia. METHODS An electronic database was developed by a panel of clinicians, to capture an agreed dataset for patients with newly diagnosed metastatic colorectal cancer. Of particular interest were clinician decision-making, the impact of comorbidities and the frequency of major adverse events. RESULTS Since July 2009, data collection has been established at six public and eight private hospitals across three Australian states and territories. Successful linkage and analysis, with support from BioGrid Australia, of selected data on the initial 864 patients demonstrates that data can be captured from diverse sites, including public and private practice, that multiple factors impact on treatment delivered and outcomes achieved and that comprehensive data on rare but important adverse events can be captured. As a clinical research tool, the project has been highly successful, generating multiple presentations at national and international conferences related to a diverse range of research questions. CONCLUSIONS Multistate, project-specific data collection involving large numbers of patients is achievable. Providing invaluable insight into the routine clinical management of metastatic colorectal cancer in the era of targeted therapies, this also creates a significant resource for research, including many questions not being addressed by clinical trials.
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Affiliation(s)
- K Field
- Medical Oncology, Royal Melbourne Hospital, Melbourne, Victoria, Australia
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Bai M, He C, Yin Z, Niu J, Wang Z, Qi X, Liu L, Yang Z, Guo W, Tie J, Bai W, Xia J, Cai H, Wang J, Wu K, Fan D, Han G. Randomised clinical trial: L-ornithine-L-aspartate reduces significantly the increase of venous ammonia concentration after TIPSS. Aliment Pharmacol Ther 2014; 40:63-71. [PMID: 24832463 DOI: 10.1111/apt.12795] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2014] [Revised: 02/18/2014] [Accepted: 04/24/2014] [Indexed: 12/26/2022]
Abstract
BACKGROUND Use of TIPSS is associated with increases in ammonia concentration and hepatic encephalopathy (HE) risk. L-ornithine-L-aspartate (LOLA) is effective in reducing ammonia concentration. AIM To evaluate the effects of LOLA on venous ammonia concentration after TIPSS. METHODS The included patients were randomised to receive LOLA or no-LOLA treatment for 7 days. Fasting and post-prandial venous ammonia levels were the primary outcomes. Psychometric performance, post-TIPSS HE, and liver and renal function were assessed as secondary outcomes. RESULTS Of 133 cirrhotic patients who received successful TIPSS between November 2011 and June 2012, 40 met the inclusion criteria and were randomised to the LOLA (n = 21) or control (n = 19) groups. Change in fasting ammonia significantly favoured the LOLA group at days 4 (P = 0.001) and 7 (P = 0.003). Changes in post-prandial ammonia concentration significantly favoured the LOLA group at days 1, 4 and 7 as well. During the study period, patients in the LOLA group had better improvement in psychometric tests than those in the control group. Overt HE during treatment was observed in one patient in the LOLA group and three patients in the control group (P = 0.331). There were no differences in complications, adverse events or mortality between the two groups. CONCLUSIONS Prophylactic use of LOLA infusion after TIPSS is safe and effective in significantly reducing the increase of venous ammonia concentration, and can benefit the patient's mental status as well.
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Affiliation(s)
- M Bai
- Department of Liver Disease and Digestive Interventional Radiology, Xijing Hospital of Digestive Diseases, Xijing Hospital, Fourth Military Medical University, Xi'an, China
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Zhang Y, Deng J, Zhang J, Hu Q, Tie J, Wu H. SU-E-J-113: The Influence of Optimizing Pediatric CT Simulator Protocols On the Treatment Dose Calculation in Radiotherapy. Med Phys 2014. [DOI: 10.1118/1.4888165] [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: 11/07/2022] Open
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Yuan G, Wei Q, Tie J, Wang C, Rao L, Zhang W. Synergistic sporicidal effect of ethanol on a combination of orthophthalaldehyde and didecyldimethylammonium chloride. Lett Appl Microbiol 2014; 59:272-7. [PMID: 24739063 DOI: 10.1111/lam.12271] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Revised: 04/06/2014] [Accepted: 04/07/2014] [Indexed: 12/19/2022]
Abstract
UNLABELLED The objective of this study was to evaluate the potential synergistic effect of ethanol on a combination of orthophthalaldehyde (OPA) and didecyldimethylammonium chloride (DDAC) against the spores of Bacillus subtilis var. Niger. The quantitative carrier test for sporicidal testing of high-level disinfectants according to the guideline of China (Technical Standard for Disinfection 2002) was used as method. Considerable synergistic effect was observed after a 30-min treatment at 20°C. There was an augment in mean log reduction as the concentration of DDAC was increased ranging from 0·2 to 3 g l(-1) in combination with 6 g l(-1) OPA. Ten and 20% ethanol in combination with 6 g l(-1) OPA and 2 g l(-1) DDAC caused more than a 3-log reduction while either 6 g l(-1) OPA, 2 g l(-1) DDAC and 20% ethanol alone or a combination of two of the three agents produced less than a 1-log reduction. Further, 40-min exposure time of combination of OPA, DDAC and 20% ethanol led to greater than a 5-log reduction in spores, and no spore growth was observed following 60- and 90-min exposures. SIGNIFICANCE AND IMPACT OF THE STUDY Orthophthalaldehyde (OPA) is very effective at concentrations far lower than its recommended in-use concentration of 0·5% (w/v) and is equally effective against both the gram-negative and gram-positive bacteria. However, it shows lower activity against spores. The synergistic sporicidal effect exhibited by ethanol on a combination of OPA and DDAC can be considered to enhance sporicidal activity for using in situations of sterilization, to reduce in-use concentration of OPA used alone, which may minimize its side effect. OPA may be a more satisfactory and the first-choice agent to replace glutaraldehyde (GTA) as a high-level disinfectant for medical devices.
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Affiliation(s)
- G Yuan
- Evaluation and Research Center for Disinfection, Institute of Disease Control and Prevention, Academy of Military Medical Sciences, Beijing, China
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Wong HL, Field K, Harol M, Tran B, Tie J, Shapiro J, Wong R, Yip D, Nott L, Richardson G, McKendrick J, Gibbs P. P0183 Resection of colorectal cancer metastases in routine practice. Eur J Cancer 2014. [DOI: 10.1016/j.ejca.2014.03.227] [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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Goldstein J, Tran B, Ensor J, Gibbs P, Wong HL, Wong SF, Vilar E, Tie J, Broaddus R, Kopetz S, Desai J, Overman MJ. Multicenter retrospective analysis of metastatic colorectal cancer (CRC) with high-level microsatellite instability (MSI-H). Ann Oncol 2014; 25:1032-8. [PMID: 24585723 DOI: 10.1093/annonc/mdu100] [Citation(s) in RCA: 196] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND The microsatellite instability-high (MSI-H) phenotype, present in 15% of early colorectal cancer (CRC), confers good prognosis. MSI-H metastatic CRC is rare and its impact on outcomes is unknown. We describe survival outcomes and the impact of chemotherapy, metastatectomy, and BRAF V600E mutation status in the largest reported cohort of MSI-H metastatic colorectal cancer (CRC). PATIENTS AND METHODS A retrospective review of 55 MSI-H metastatic CRC patients from two institutions, Royal Melbourne Hospital (Australia) and The University of Texas MD Anderson Cancer Center (United States), was conducted. Statistical analyses utilized Kaplan-Meier method, Log-rank test, and Cox proportional hazards models. RESULTS Median age was 67 years (20-90), 58% had poor differentiation, and 45% had stage IV disease at presentation. Median overall survival (OS) from metastatic disease was 15.4 months. Thirteen patients underwent R0/R1 metastatectomies, with median OS from metastatectomy 33.8 months. Thirty-one patients received first-line systemic chemotherapy for metastatic disease with median OS from the start of chemotherapy 11.5 months. No statistically significant difference in progression-free survival or OS was seen between fluoropyrimidine, oxaliplatin, or irinotecan based chemotherapy. BRAF V600E mutation was present in 14 of 47 patients (30%). BRAF V600E patients demonstrated significantly worse median OS; 10.1 versus 17.3 months, P = 0.03. In multivariate analyses, BRAF V600E mutants had worse OS (HR 4.04; P = 0.005), while patients undergoing metastatectomy (HR 0.11; P = <0.001) and patients who initially presented as stage IV disease had improved OS (HR 0.27; P = 0.003). CONCLUSIONS Patients with MSI-H metastatic CRC do not appear to have improved outcomes. BRAF V600E mutation is a poor prognostic factor in MSI-H metastatic CRC.
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Affiliation(s)
- J Goldstein
- Department of Gastrointestinal Medical Oncology, MD Anderson Cancer Center, Houston, USA
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Brierley GV, Priebe IK, Purins L, Fung KYC, Tabor B, Lockett T, Nice E, Gibbs P, Tie J, McMurrick P, Moore J, Ruszkiewicz A, Burgess A, Cosgrove LJ. Serum concentrations of brain-derived neurotrophic factor (BDNF) are decreased in colorectal cancer patients. Cancer Biomark 2014; 13:67-73. [PMID: 23838134 DOI: 10.3233/cbm-130345] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
OBJECTIVE To determine the usefulness of brain-derived neurotrophic factor (BDNF) as a diagnostic biomarker for colorectal cancer (CRC). MATERIALS AND METHODS ELISA immunoassay was used to examine BDNF concentrations in the sera of two different retrospective cohorts consisting of CRC patients and age/gender matched controls. Cohort 1 consisted of 99 controls and 97 CRC patients, whereas cohort 2 consisted of 47 controls and 91 CRC patients. RESULTS In cohort 1, the median concentration of BDNF was significantly (p< 0.0001) lower in CRC patient samples (18.8 ng/mL, range 4.0-56.5 ng/mL) than control samples (23.4 ng/mL, range 3.0-43.1 ng/mL). This finding was validated in an independent patient cohort (CRC patients: 23.0 ng/mL, range 6.0-45.9 ng/mL; control patients: 32.3 ng/mL, range 14.2-62.4 ng/mL). BDNF concentrations did not differ significantly between Dukes' staging in the patient cohort, however patients with Stages A, B, C and D (p< 0.01 for each stage) tumours had significantly reduced BDNF levels compared to healthy controls. Receiver operating characteristic analysis was performed to determine the ability of BDNF to discriminate between healthy controls and those with CRC. At 95% specificity, BDNF concentrations distinguished CRC patients with 25% and 18% sensitivity, respectively, in cohorts 1 and 2 (cohort 1: AUC=0.79, 95% CI 0.70-0.87; cohort 2: AUC =0.69, 95% CI 0.61-0.76). CONCLUSION The serum levels of BDNF were significantly lower in colorectal cancer patients when compared to a control population, and this did not differ between different Dukes' stages.
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Affiliation(s)
- G V Brierley
- CSIRO Preventative Health National Research Flagship, Adelaide BC, South Australia, Australia
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Tie J, Gibbs P. Author reply. Intern Med J 2013; 43:844-5. [DOI: 10.1111/imj.12186] [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] [Received: 04/28/2013] [Accepted: 05/07/2013] [Indexed: 11/26/2022]
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Tie J, Gibbs P. Treatment with unfunded drugs in oncology: the impact of access programmes and clinical trials. Intern Med J 2013; 43:23-31. [DOI: 10.1111/j.1445-5994.2012.02750.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2011] [Accepted: 02/08/2012] [Indexed: 11/28/2022]
Affiliation(s)
- J. Tie
- Department of Medical Oncology; the Royal Melbourne Hospital
- Department of Medical Oncology; Western Hospital
- Ludwig Colon Cancer Initiative Biomarkers Laboratory; Ludwig Institute for Cancer Research
| | - P. Gibbs
- Department of Medical Oncology; the Royal Melbourne Hospital
- Department of Medical Oncology; Western Hospital
- Ludwig Colon Cancer Initiative Biomarkers Laboratory; Ludwig Institute for Cancer Research
- BioGrid Australia; Melbourne Victoria Australia
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Overman M, Kopetz S, Wong S, Tie J, Kosmider S, Jacob A, Vilar E, Gibbs P, Desai J, Tran B. Survival Outcomes in Metastatic Colorectal Cancer (CRC) with High-Level Microsatellite Instability (MSI-H). Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)33129-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: 10/25/2022] Open
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Zhao X, Dou W, He L, Liang S, Tie J, Liu C, Li T, Lu Y, Mo P, Shi Y, Wu K, Nie Y, Fan D. MicroRNA-7 functions as an anti-metastatic microRNA in gastric cancer by targeting insulin-like growth factor-1 receptor. Oncogene 2012; 32:1363-72. [PMID: 22614005 DOI: 10.1038/onc.2012.156] [Citation(s) in RCA: 181] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Metastasis is a major clinical obstacle in the treatment of gastric cancer (GC) and it accounts for the majority of cancer-related mortality. MicroRNAs have recently emerged as regulators of metastasis by acting on multiple signaling pathways. In this study, we found that miR-7 is significantly downregulated in highly metastatic GC cell lines and metastatic tissues. Both gain-of-function and loss-of-function experiments showed that increased miR-7 expression significantly reduced GC cell migration and invasion, whereas decreased miR-7 expression dramatically enhanced cell migration and invasion. In vivo metastasis assays also demonstrated that overexpression of miR-7 markedly inhibited GC metastasis. Moreover, the insulin-like growth factor-1 receptor (IGF1R) oncogene, which is often mutated or amplified in human cancers and functions as an important regulator of cell growth and tumor invasion, was identified as a direct target of miR-7. Silencing of IGF1R using small interefering RNA (siRNA) recapitulated the anti-metastatic function of miR-7, whereas restoring the IGF1R expression attenuated the function of miR-7 in GC cells. Furthermore, we found that suppression of Snail by miR-7, through targeting IGF1R, increased E-cadherin expression and partially reversed the epithelial-mesenchymal transition (EMT). Finally, analyses of miR-7 and IGF1R levels in human primary GC with matched lymph node metastasis tissue arrays revealed that miR-7 is inversely correlated with IGF1R expression. The present study provides insight into the specific biological behavior of miR-7 in EMT and tumor metastasis. Targeting this novel miR-7/IGF1R/Snail axis would be helpful as a therapeutic approach to block GC metastasis.
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Affiliation(s)
- X Zhao
- State Key Laboratory of Cancer Biology and Xijing Hospital of Digestive Diseases, The Fourth Military Medical University, Xi'an, China
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Abstract
MicroRNAs (miRNAs) are a class of endogenous non-protein-coding small RNAs that are evolutionarily conserved and widely distributed among species. Their major function is to negatively regulate target gene expression. A single miRNA can regulate multiple target genes, indicating that miRNAs may regulate multiple signaling pathways and participate in a variety of physiological and pathological processes. Currently, approximately 50% of identified human miRNA-coding genes are located at tumor-related fragile chromosome regions. Abnormal miRNA expression and/or mutations have been found in almost all types of malignancies. These abnormally expressed miRNAs play roles similar to tumor suppressor genes or oncogenes by regulating the expression and/or function of tumor-related genes. Therefore, miRNAs, miRNA target genes, and the genes regulating miRNAs form a regulatory network with miRNAs in the hub. This network plays a pivotal role in tumorigenesis and tumor development.
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Affiliation(s)
- J Tie
- State Key Laboratory of Cancer Biology and Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an, Shaanxi, China
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Christie M, Prakash S, Jorissen RN, Sakthianandeswaren A, Gibbs P, Lipton LR, Desai J, Tie J, Kerr DJ, Sieber O. Prognostic value of chronic inflammatory cell infiltrates in Duke's stage B and C colorectal cancer. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e14003] [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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Tran B, Kopetz S, Tie J, Gibbs P, Jiang Z, Lieu CH, Agarwal A, Maru D, Sieber O, Desai J. Differences in sites of metastatic disease and outcomes observed in patients with BRAF mutant colorectal cancers. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.3592] [Citation(s) in RCA: 2] [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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Field K, Tie J, Desai J, Lipton L, Sieber O, Murigu N, Larkins M, Kosmider S, Gibbs P. 1319 Microsatellite instability in sporadic colorectal cancer: correlation with novel clinical parameters. EJC Suppl 2009. [DOI: 10.1016/s1359-6349(09)70492-6] [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: 11/17/2022] Open
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Tie J, Sieber OM, Gibbs P, Lipton L, Jorissen RN, Langland R, Kosmider S, McKay D, Nolop KB, Desai J. Selecting subjects for a therapeutic target in colorectal cancer (CRC): Using a clinical database to enrich for patients harboring the BRAF V600E mutation. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.11003] [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
11003 Introduction: The BRAFV600E mutation (BRAF) causes constitutive activation of the RAS-induced MAPK pathway and is found in 10% of colon cancers. B-RAF inhibitors are in early clinical development, but their development in CRC will be challenging unless subsets of patients (pts) with higher rates of BRAF can be defined. The mutation rate in rectal tumors, the concordance between primary and metastases, and the prognostic/predictive significance of BRAF are current gaps in knowledge. Methods: 481 primary tumors and 80 matched primary-metastasis (prim-met) pairs were analysed from a pre-defined cohort of pts with CRC based on age (≥ 70 vs < 70 years), gender, tumor site (right-R, left-L and rectum), stage (A to C vs D) and ≥ 2 years follow-up. BRAF was assessed by routine sequencing of exon 15 and by a mutant-specific PCR assay. KRAS (KRAS-codon 12 and 13) and MSI (Bethesda markers) status were also examined. Results: Overall prevalence of BRAF was 11%. BRAF (see table ) was independently associated with increasing age, female gender and R-sided cancer, but not with stage. Mutations were rare in rectal cancers. BRAF was associated with inferior overall survival in stage D pts (log-rank, p = 0.0003; HR 0.38, 95% CI, 0.10–0.51). Survival analysis will be further stratified by treatment received. No difference in outcome was seen in preliminary analysis of earlier stage cancers. Mutation frequencies in the prim-met pairs were 38% (30/80) and 1.3% (1/80) for KRAS and BRAF, respectively. Overall concordance was 88% (70/80) for KRAS and 100% (80/80) for BRAF status. Conclusions: The development of selective B-Raf inhibitors in CRC is potentially more attractive due to the ability to define patient subsets with a higher prevalence of BRAF mutations. Analysis of the primary tumor reliably predicts the status of metastatic disease in the same patient. The association between BRAFand poor outcome will need to be considered when interpreting the result of studies targeting this mutation. [Table: see text] [Table: see text]
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Affiliation(s)
- J. Tie
- Ludwig Institute for Cancer Research, Melbourne, Australia; Roche Molecular Systems, Pleasanton, CA; Biogrid Australia, Melbourne, Australia; Royal Melbourne and Western Hospital, Melbourne, Australia; Plexxikon, Berkeley, CA
| | - O. M. Sieber
- Ludwig Institute for Cancer Research, Melbourne, Australia; Roche Molecular Systems, Pleasanton, CA; Biogrid Australia, Melbourne, Australia; Royal Melbourne and Western Hospital, Melbourne, Australia; Plexxikon, Berkeley, CA
| | - P. Gibbs
- Ludwig Institute for Cancer Research, Melbourne, Australia; Roche Molecular Systems, Pleasanton, CA; Biogrid Australia, Melbourne, Australia; Royal Melbourne and Western Hospital, Melbourne, Australia; Plexxikon, Berkeley, CA
| | - L. Lipton
- Ludwig Institute for Cancer Research, Melbourne, Australia; Roche Molecular Systems, Pleasanton, CA; Biogrid Australia, Melbourne, Australia; Royal Melbourne and Western Hospital, Melbourne, Australia; Plexxikon, Berkeley, CA
| | - R. N. Jorissen
- Ludwig Institute for Cancer Research, Melbourne, Australia; Roche Molecular Systems, Pleasanton, CA; Biogrid Australia, Melbourne, Australia; Royal Melbourne and Western Hospital, Melbourne, Australia; Plexxikon, Berkeley, CA
| | - R. Langland
- Ludwig Institute for Cancer Research, Melbourne, Australia; Roche Molecular Systems, Pleasanton, CA; Biogrid Australia, Melbourne, Australia; Royal Melbourne and Western Hospital, Melbourne, Australia; Plexxikon, Berkeley, CA
| | - S. Kosmider
- Ludwig Institute for Cancer Research, Melbourne, Australia; Roche Molecular Systems, Pleasanton, CA; Biogrid Australia, Melbourne, Australia; Royal Melbourne and Western Hospital, Melbourne, Australia; Plexxikon, Berkeley, CA
| | - D. McKay
- Ludwig Institute for Cancer Research, Melbourne, Australia; Roche Molecular Systems, Pleasanton, CA; Biogrid Australia, Melbourne, Australia; Royal Melbourne and Western Hospital, Melbourne, Australia; Plexxikon, Berkeley, CA
| | - K. B. Nolop
- Ludwig Institute for Cancer Research, Melbourne, Australia; Roche Molecular Systems, Pleasanton, CA; Biogrid Australia, Melbourne, Australia; Royal Melbourne and Western Hospital, Melbourne, Australia; Plexxikon, Berkeley, CA
| | - J. Desai
- Ludwig Institute for Cancer Research, Melbourne, Australia; Roche Molecular Systems, Pleasanton, CA; Biogrid Australia, Melbourne, Australia; Royal Melbourne and Western Hospital, Melbourne, Australia; Plexxikon, Berkeley, CA
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Tie J, Wu SM, Jin D, Nicchitta CV, Stafford DW. A topological study of the human gamma-glutamyl carboxylase. Blood 2000; 96:973-8. [PMID: 10910912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023] Open
Abstract
gamma-Glutamyl carboxylase (GC), a polytopic membrane protein found in the endoplasmic reticulum (ER), catalyzes vitamin K-dependent posttranslational modification of glutamate to gamma-carboxyl glutamate. In an attempt to delineate the structure of this important enzyme, in vitro translation and in vivo mapping were used to study its membrane topology. Using terminus-tagged full-length carboxylase, expressed in 293 cells, it was demonstrated that the amino-terminus of the GC is on the cytoplasmic side of the ER, while the carboxyl-terminus is on the lumenal side. In addition, a series of fusions were made to encode each predicted transmembrane domain (TMD) followed by a leader peptidase (Lep) reporter tag, as analyzed by the computer algorithm TOPPRED II. Following in vitro translation of each fusion in the presence of canine microsomes, the topological orientation of the Lep tag was determined by proteinase K digestion and endoglycosidase H (Endo H) cleavage. From the topological orientation of the Lep tag in each fusion, the GC spans the ER membrane at least 5 times, with its N-terminus in the cytoplasm and its C-terminus in the lumen.
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Affiliation(s)
- J Tie
- Department of Biology, Center for Thrombosis and Homeostasis, University of North Carolina at Chapel Hill, 27599-3280, USA
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Zhang W, Tie J, Shen H. [A preliminary study on the induction of metallothionein in rats with aluminum administration by different ways]. Zhonghua Yu Fang Yi Xue Za Zhi 1998; 32:153-5. [PMID: 10322788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
OBJECTIVE To study the inductive effects of aluminum (Al) on metallothioneine (MT) in rats. METHODS Inductive experiment of MT was conducted with Al administration in 16 SD rats, divided into trial and control groups, for two weeks by subcutaneous injection and gastric tube. RESULTS Al could induce liver MT in the rats, to certain extent, especially more significantly by subcutaneous injection than by oral administration of Al. Oral administration of Al also could induce MT in the small intestine. Induction of MT by Al reflected the body response to stress, the metal poison Al. CONCLUSION It postulated that combination of Al with MT was unstable due to its chemical property, so, its detoxication effect was uncertain. In addition, induction of MT in different sites, such as liver and small intestine, by Al could influence the normal metabolism of metal elements, such as zinc, etc.
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Affiliation(s)
- W Zhang
- Department of Nutrition and Food Hygiene, Tianjin Medical University
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Sebetan IM, Oshida S, Yuasa I, Tie J. Genetic polymorphisms of orosomucoid ORM1 and ORM2 in Egyptians, Sudanese, and Qataris: occurrence of two new alleles. Hum Biol 1997; 69:121-9. [PMID: 9037900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Isoelectric focusing was used to investigate the genetic variants of the human plasma orosomucoid ORM1 and ORM2 gene loci in samples of Egyptians, Sudanese, and Qataris. The study populations were classified into 28 ORM phenotypes determined by 10 ORM1 and 9 ORM2 alleles that included 2 new alleles, designated ORM1*B13 and ORM2*H21. Family studies of these new alleles are in accordance with codominant autosomal inheritance. A new interpretation for two previously reported alleles, ORM1*C6 and ORM2*H17, is also presented.
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Affiliation(s)
- I M Sebetan
- Department of Legal Medicine, Nihon University School of Medicine, Tokyo, Japan
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Sebetan IM, Oshida S, Tie J. An improved high resolution single method for orosomucoid ORM1 and ORM2 phenotyping. J Forensic Sci 1997; 42:115-7. [PMID: 8988583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
An improved high resolution single method for orosomucoid ORM1 and ORM2 phenotyping using isoelectric focusing (IEF) in wide-scales ultrathin layer polyacrylamide gels of pH range 4.2 to 4.9 is presented. The method is reliable, simple, and provides an alternative for the three currently required ones for typing this genetic system.
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Affiliation(s)
- I M Sebetan
- Department of Legal Medicine, Nihon University School of Medicine, Tokyo, Japan
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Rasgado-Flores H, Espinosa-Tanguma R, Tie J, DeSantiago J. Voltage dependence of Na-Ca exchange in barnacle muscle cells. I. Na-Na exchange activated by alpha-chymotrypsin. Ann N Y Acad Sci 1996; 779:236-48. [PMID: 8659831 DOI: 10.1111/j.1749-6632.1996.tb44790.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- H Rasgado-Flores
- Department of Physiology and Biophysics, Finch University of Health Sciences/Chicago Medical School, IL 60064, USA
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Abstract
Allele frequency distributions for the D1S80 (MCT118) and HLA DQ alpha loci were determined in a Chinese population sample using the polymerase chain reaction (PCR). A total of 25 alleles and 100 phenotypes were observed for D1S80. The frequency of allele 18 was higher than allele 24 only in this Chinese population when compared to other reported populations. A total of 6 alleles and 21 possible phenotypes were observed for HLA DQ alpha. The power of discrimination was 0.97 and 0.93 for D1S80 and HLA DQ alpha, respectively.
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Affiliation(s)
- J Tie
- Department of Legal Medicine, Nihon University School of Medicine, Tokyo, Japan
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Abstract
It is controversial whether changes in adenosine 3',5'-cyclic monophosphate (cAMP) and in the cAMP-to-guanosine 3',5'-cyclic monophosphate (cGMP) ratio are involved with cell swelling and in the activation of volume-regulatory mechanisms. We examined whether these nucleotides are involved in cell volume regulation in skeletal muscle. Isolated (intact and internally perfused) barnacle muscle cells were used because these cells, when exposed to a hyposmotic environment, undergo an extracellular Ca2+ (Cao)-dependent regulatory volume decrease (RVD). Using intact cells we found that dibutyryl cAMP and forskolin significantly promoted RVD in cells exposed to Cao-free solutions and that dibutyryl cGMP significantly inhibited RVD in cells exposed to Cao-containing solutions. In perfused cells in which the intracellular free Ca2+ concentration ([Ca2+]i) was heavily buffered [with 8 mM ethylene glycol-bis(beta-aminoethyl ether)-N,N,N',N'-tetraacetic acid (EGTA)], cAMP induced a volume loss that was inhibited by presence of cGMP. Furthermore, if perfused cells were exposed to hyposmotic conditions, they swelled and underwent RVD provided that [Ca2+]i buffering was low (with 2 mM EGTA). This effect was inhibited by presence of the cAMP antagonist, [R]-p-adenosine 3',5'-cyclic monophosphorothioate.
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Affiliation(s)
- C Peña-Rasgado
- Department of Physiology and Biophysics, Finch University of Health Sciences, Chicago Medical School, Illinois 60064
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Kitazawa M, Tsukamoto S, Kanegae T, Tie J, Kaneko Y, Shiratori R, Oshida S. [Concentrations of ethanol and ethanol metabolites and symptoms of acute alcohol-intoxicated patients]. Arukoru Kenkyuto Yakubutsu Ison 1994; 29:31-9. [PMID: 8135664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Five patients who presented to an emergency room and did not have other injury and disease with acute alcohol intoxication were analyzed about blood and urine ethanol, acetaldehyde, acetate and acetone levels. The average concentrations of ethanol, acetaldehyde, acetate and acetone in blood were 37.0 mM (1.7 mg/ml), 18 microM, 1.00 mM and 18 microM, respectively and the concentrations in urine were 50.8 mM (2.3 mg/ml), 37 microM, 0.79 mM and 47 microM, respectively. Clinical symptoms were concerned with both ethanol concentration and concentrations of ethanol metabolites. Their symptoms of acute alcohol-intoxicated patients were caused by the ethanol concentrations which was less than the levels reported in early studies.
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Affiliation(s)
- M Kitazawa
- Department of Legal Medicine, Nihon University School of Medicine, Tokyo, Japan
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Tie J, Tsukamoto S, Oshida S. An analysis of low side molecular weight proteins in human seminal plasma by capillary electrophoresis. Nihon Hoigaku Zasshi 1993; 47:295-301. [PMID: 8377270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Semen was obtained from 45 healthy males, and its plasma proteins of low side molecular weight obtained by filtration with a Molcut II (Millipore) were analyzed by means of capillary electrophoresis (CE) for an application to forensic medicine, with a phosphoric acid of pH 4.5 and a column of 100 cm x 75 microns ID. There were noted 27 to 36 peaks on the chromatograms, two sections of which showed individual differences in the chromatographic patterns. The chromatographic patterns between 20.0 and 22.0 minutes were classified into 2 groups: I (66.7%) and II (33.3%). The main peak appearing at about 36 minutes was divided between two patterns: A (53.3%) and B (46.7%). The serum, saliva, and vaginal fluid were also analyzed for low-side-molecular-weight proteins by means of capillary electrophoresis, but their levels contained low and their chromatographic patterns different from those of seminal plasma. The patterns of the whole seminal plasma, saliva and serum with pH 7.0 phosphate buffer were different and appeared to be applicable for identifying such samples.
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Affiliation(s)
- J Tie
- Department of Legal Medicine, Nihon University School of Medicine
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