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Liu RR, Gu SZ, Zhou T, Lin LZ, Chen WC, Zhong DS, Liu TS, Yang N, Shen L, Xu SY, Lu N, Zhang Y, Gong ZL, Xu JM. [A phase I study of subcutaneous envafolimab (KN035) monotherapy in Chinese patients with advanced solid tumors]. Zhonghua Zhong Liu Za Zhi 2023; 45:898-903. [PMID: 37875426 DOI: 10.3760/cma.j.cn112152-20220530-00373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 10/26/2023]
Abstract
Objective: To evaluate the safety and antitumor activity of envafolimab monotherapy in Chinese patients with advanced solid tumors. Methods: This open-label, multicenter phase I trial included dose escalation and dose expansion phases. In the dose escalation phase, patients received subcutaneous 0.1, 0.3, 1.0, 2.5, 5.0 or 10.0 mg/kg envafolimab once weekly (QW) following a modified "3+ 3" design. The dose expansion phase was performed in the 2.5 mg/kg and 5.0 mg/kg (QW) dose cohorts. Results: At November 25, 2019, a total of 287 patients received envafolimab treatment. During the dose escalation phase, no dose-limiting toxicities (DLT) was observed. In all dose cohorts, drug-related treatment-emergent adverse events (TEAEs) for all grades occurred in 75.3% of patients, and grade 3 or 4 occurred in 20.6% of patients. The incidence of immune-related adverse reactions (irAE) was 24.0% for all grades, the most common irAEs (≥2%) included hypothyroidism, hyperthyroidism, immune-associated hepatitis and rash. The incidence of injection site reactions was low (3.8%), all of which were grades 1-2. Among the 216 efficacy evaluable patients, the objective response rate (ORR) and disease control rate (DCR) were 11.6% and 43.1%, respectively. Median duration of response was 49.1 weeks (95% CI: 24.0, 49.3). Pharmacokinetic (PK) exposure to envafolimab is proportional to dose and median time to maximum plasma concentration is 72-120 hours based on the PK results from the dose escalation phase of the study. Conclusion: Subcutaneous envafolimab has a favorable safety and promising preliminary anti-tumor activity in Chinese patients with advanced solid tumors.
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Affiliation(s)
- R R Liu
- Department of Medical Oncology, Senior Department of Oncology, the Fifth Medical Center of PLA General Hospital, Beijing 100071, China
| | - S Z Gu
- Department of Interventional Radiology, Hunan Cancer Hospital, Changsha 410031, China
| | - T Zhou
- Department of Urology, Changhai Hospital of Shanghai, Shanghai 200433, China
| | - L Z Lin
- Cancer Center, the First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - W C Chen
- Department of Gastroenterology, First Affiliated Hospital to Soochow University, Suzhou 215006, China
| | - D S Zhong
- Department of Medical Oncology, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - T S Liu
- Department of Medical Oncology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - N Yang
- Lung Cancer and Gastrointestinal Unit, Hunan Cancer Hospital, Changsha 410031, China
| | - L Shen
- Department of Gastrointestinal Oncology, Peking University Cancer Hospital, Beijing 100142, China
| | - S Y Xu
- 3D Medicines Co. Ltd, Chengdu 610036, China
| | - N Lu
- 3D Medicines Co. Ltd, Chengdu 610036, China
| | - Y Zhang
- 3D Medicines Co. Ltd, Chengdu 610036, China
| | - Z L Gong
- 3D Medicines Co. Ltd, Chengdu 610036, China
| | - J M Xu
- Department of Medical Oncology, Senior Department of Oncology, the Fifth Medical Center of PLA General Hospital, Beijing 100071, China
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Liu SJ, Chen WC, Zhang Y, Young JS, Morshed RA, Nguyen MP, Villanueva-Meyer J, Phillips J, Oberheim NA, Aghi MK, Sneed PK, Braunstein SE, de Groot J, Berger MS, Molinaro AM, Hervey-Jumper S, Raleigh D. Adjuvant Chemoradiotherapy within One Year of Resection for Molecularly Defined Astrocytoma. Int J Radiat Oncol Biol Phys 2023; 117:e130-e131. [PMID: 37784692 DOI: 10.1016/j.ijrobp.2023.06.930] [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) Treatments for diffuse low-grade gliomas (LGG) are controversial. Level I evidence supports the use of adjuvant radiotherapy (RT) and PCV chemotherapy for histologic LGG, but integration of molecular biomarkers in recent WHO classification and the emergence of temozolomide chemotherapy for gliomas necessitates additional investigation of the optimal treatment and timing of postoperative interventions. We hypothesized molecularly-defined LGG (IDH-mutant astrocytoma (astro) and IDH-mutant, 1p/19q-codeleted oligodendroglioma (oligo)) may have different clinical outcomes following adjuvant RT (aRT) with chemotherapy (aRT+chemo) vs observation or chemo alone. MATERIALS/METHODS A retrospective analysis of consecutive adult patients diagnosed with WHO Grade 2 astrocytoma or oligodendroglioma who underwent initial resection at a single institution from January 1998 to November 2017 was performed. Wilcoxon rank sum and Chi-squared tests were used to compare continuous and categorical variables, respectively. Survival analyses were performed using the Kaplan-Meier method and Cox proportional hazards models. Patients without clinical progression or death were censored at the date of last follow-up. Pre-operative and post-operative T2 FLAIR hyperintense tumor volumes were quantified using 3D Slicer to calculate extent of resection (EOR). RESULTS A total of 342 patients with molecularly-defined LGG (178 astro, 164 oligo) were identified with a median follow up of 9.1 yr. 171 (50%) patients received RT during their treatment course, of which 31 (18%) were treated with aRT within 1 year of diagnosis. The median aRT dose was 54 Gy (range: 40-60 Gy). aRT was more likely for astro (58%) vs oligo (41%, p = 0.001) and for patients who had resections with lower median EOR (88% vs 95%, p = 0.014). 53 patients (15%) were treated with chemo alone, and 136 patients (40%) were treated with aRT+chemo. Temozolomide was used for 161 patients (85%). For astro, aRT+chemo was associated with longer PFS (median 14.9 yr) compared to observation (4.8 yr, p = 0.05), aRT without chemo (5.2 yr, p = 0.01), or chemo alone (4.7 yr, p = 0.02). For oligo, aRT+chemo was associated with longer PFS (median not reached) compared to aRT without chemo (1.6 yr, p = 0.03), but not when compared to observation (median not reached, p = 0.47), or chemo alone (7.9 yr, p = 0.45). Multivariate analysis showed preoperative tumor volume, EOR, and aRT+chemo (but not aRT or chemo alone) were independently associated with astro PFS compared to observation. Propensity matching based on pre-operative tumor volume, EOR, and age demonstrated longer astro PFS after aRT+chemo (14.9 yr) compared to observation or chemo alone (4.5 yr, p = 0.015), without significant difference in OS (18.2 vs. 11.5 yr, p = 0.40). CONCLUSION Retrospective data from a single institution support the use of adjuvant radiotherapy with chemotherapy for patients with molecular astrocytomas, while the role of this approach for oligodendrogliomas is unclear in this cohort.
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Affiliation(s)
- S J Liu
- University of California San Francisco, Department of Radiation Oncology, San Francisco, CA
| | - W C Chen
- University of California San Francisco, San Francisco, CA
| | - Y Zhang
- University of California San Francisco, Department of Epidemiology and Biostatistics, San Francisco, CA
| | - J S Young
- University of California San Francisco, Department of Neurological Surgery, San Francisco, CA
| | - R A Morshed
- University of California San Francisco, Department of Neurological Surgery, San Francisco, CA
| | - M P Nguyen
- University of California, San Francisco, Department of Radiation Oncology, San Francisco, CA
| | | | - J Phillips
- University of California San Francisco, Department of Neurological Surgery, San Francisco, CA
| | - N A Oberheim
- University of California San Francisco, Department of Neurological Surgery, San Francisco, CA
| | - M K Aghi
- University of California San Francisco, Department of Neurological Surgery, San Francisco, CA
| | - P K Sneed
- University of California San Francisco, Department of Radiation Oncology, San Francisco, CA
| | - S E Braunstein
- University of California San Francisco, Department of Radiation Oncology, San Francisco, CA
| | - J de Groot
- University of California, San Francisco, San Francisco, CA
| | - M S Berger
- University of California San Francisco, Department of Neurological Surgery, San Francisco, CA
| | - A M Molinaro
- University of California San Francisco, Department of Epidemiology and Biostatistics, San Francisco, CA
| | - S Hervey-Jumper
- University of California San Francisco, Department of Neurological Surgery, San Francisco, CA
| | - D Raleigh
- University of California San Francisco, Department of Radiation Oncology, San Francisco, CA
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Wu Y, Chen YQ, Shi TG, Tan NJ, Chen WC. [Study of immunophenotypic characteristics, clinicopathological parameters and prognosis in gastric cancer microenvironment]. Zhonghua Yi Xue Za Zhi 2023; 103:2786-2794. [PMID: 37723053 DOI: 10.3760/cma.j.cn112137-20230314-00394] [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] [Subscribe] [Scholar Register] [Indexed: 09/20/2023]
Abstract
Objective: To explore the immunophenotypic characteristics of gastric cancer microenvironment and analyze its correlation with clinicopathological parameters and prognosis of patients. Methods: The expression levels of leukocyte differentiation antigen (CD) 8, CD4, T lymphocyte immunoglobulin mucoprotein 3 (TIM3), human forkhead box protein P3 (Foxp3) and co-localized tumor infiltrating lymphocytes (TILs) were detected in 92 cases of gastric cancer tissue [58 males and 34 females; aged M(Q1, Q3), 70(59, 77) years ] and 84 cases of paracancer tissue [57 males and 27 females, aged 70(59, 77) years] purchased from Shanghai Xinchao Biotechnology Co., Ltd., and the samples were from 28 hospitals in the sample bank. Gastric cancer and adjacent tissues were divided into high expression group and low expression group according to the optimal cut-off value of positive lymphocytepercentage. The expression of immunophenotypes in gastric cancer and adjacent tissues was analyzed. Kaplan-Meier method was used for survival analysis. Cox proportional hazard model was used to explore the prognostic factors of gastric cancer patients. Results: The optimal cut-off values of CD8, CD4, TIM3 and Foxp3 positive cells in gastric cancer were 12.73%, 1.39%, 10.77% and 2.44%, respectively. The expression of Foxp3 in gastric cancer tissues was higher than that in paracancer tissues [M (Q1, Q3), 0.93 (0.45, 2.16) vs 0.31 (0.09, 0.86), P<0.001], and the expression of CD8 [4.92 (2.34, 8.80) vs 8.81 (6.61, 12.17), P<0.001], CD4 [4.79 (1.77, 11.36) vs 8.40 (4.84, 12.77), P=0.022] and TIM3 [5.68 (2.05, 11.58) vs 7.07 (3.13, 11.43), P=0.338] were lower than that in paracancer tissues. There were significant differences in TIM3 expression in gastric cancer patients with different lymph node metastasis and clinical stage (all P<0.05). The 5-year survival rate of patients with high CD4 expression, low TIM3 expression and low Foxp3 expression in gastric cancer tissues was poor, among which the high CD4 expression and low CD4 expression groups were 29.3% and 64.7%, respectively; The high and low TIM3 expression groups were 60.9% and 30.4%, respectively; The high and low Foxp3 expression groups were 64.3% and 33.3%, respectively (all P<0.05). The optimal cut-off values of CD8+TIM3+TILs, CD4+TIM3+TILs, CD8+Foxp3+TILs and CD4+Foxp3+TILs were 3.86%, 0.23%, 0.08% and 0.76%, respectively. Colocalization analysis showed that the expression of CD8+Foxp3+TILs in gastric cancer tissues was higher than that in adjacent tissues(all P<0.05). Multivariate Cox regression analysis showed that high expression of CD4 (HR=3.079, 95%CI: 1.350-7.024,P=0.008), low expression of TIM3 (HR=0.428, 95%CI: 0.208-0.879, P=0.021) and low expression of Foxp3 (HR=0.288, 95%CI: 0.121-0.687, P=0.005) were the influencing factor for the 5-year survival rate of patients with gastric cancer after operation. Conclusions: Gastric cancer tissues have complex immune microenvironment characteristics. The expression of CD4, TIM3 and Foxp3 is closely related to the prognosis of patients.
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Affiliation(s)
- Y Wu
- Department of Gastroenterology, the First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - Y Q Chen
- Department of Gastroenterology, the First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - T G Shi
- Department of Gastroenterology, the First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - N J Tan
- Department of Gastroenterology, the First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - W C Chen
- Department of Gastroenterology, the First Affiliated Hospital of Soochow University, Suzhou 215006, China
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He C, Guo ZY, Chen WC, Liu YJ, Tang LF, Wang LB, Qian LL. [Diagnostic value of nasal nitric oxide for children with primary ciliary dyskinesia]. Zhonghua Er Ke Za Zhi 2023; 61:626-630. [PMID: 37385806 DOI: 10.3760/cma.j.cn112140-20230216-00106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 07/01/2023]
Abstract
Objective: To evaluate the value of nasal nitric oxide (nNO) measurement as a diagnostic tool for Chinese patients with primary ciliary dyskinesia (PCD). Methods: This study is a retrospective study. The patients were recruited from those who were admitted to the respiratory Department of Respiratory Medicine, Children's Hospital of Fudan University from March 2018 to September 2022. Children with PCD were included as the PCD group, and children with situs inversus or ambiguus, cystic fibrosis (CF), bronchiectasis, chronic suppurative lung disease and asthma were included as the PCD symptom-similar group. Children who visited the Department of Child health Care and urology in the same hospital from December 2022 to January 2023 were selected as nNO normal control group. nNO was measured during plateau exhalation against resistance in three groups. Mann-Whitney U test was used to analyze the nNO data. The receiver operating characteristic of nNO value for the diagnosis of PCD was plotted and, the area under the curve and Youden index was calculated to find the best cut-off value. Results: nNO was measured in 40 patients with PCD group, 75 PCD symptom-similar group (including 23 cases of situs inversus or ambiguus, 8 cases of CF, 26 cases of bronchiectasis or chronic suppurative lung disease, 18 cases of asthma), and 55 nNO normal controls group. The age of the three groups was respectively 9.7 (6.7,13.4), 9.3 (7.0,13.0) and 9.9 (7.3,13.0) years old. nNO values were significantly lower in children with PCD than in PCD symptom-similar group and nNO normal controls (12 (9,19) vs. 182 (121,222), 209 (165,261) nl/min, U=143.00, 2.00, both P<0.001). In the PCD symptom-similar group, situs inversus or ambiguus, CF, bronchiectasis or chronic suppurative lung disease and asthma were significantly higher than children with PCD (185 (123,218), 97 (52, 132), 154 (31, 202), 266 (202,414) vs. 12 (9,19) nl/min,U=1.00, 9.00, 133.00, 0, all P<0.001). A cut-off value of 84 nl/min could provide the best sensitivity (0.98) and specificity (0.92) with an area under the curve of 0.97 (95%CI 0.95-1.00, P<0.001). Conclusions: nNO value can draw a distinction between patients with PCD and others. A cut-off value of 84 nl/min is recommended for children with PCD.
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Affiliation(s)
- C He
- Department of Respiratory Medicine, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - Z Y Guo
- Department of Respiratory Medicine, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - W C Chen
- Department of Cardiothoracic Surgery, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - Y J Liu
- Pediatric Clinical Research Center, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - L F Tang
- Department of Urology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - L B Wang
- Department of Respiratory Medicine, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - L L Qian
- Department of Respiratory Medicine, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
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Chen JM, Chen M, Ren XC, Chen WC, Wang N, Li JW. [Research progress of metal micro-battery dressings in wound repair]. Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi 2023; 39:596-600. [PMID: 37805778 DOI: 10.3760/cma.j.cn501225-20220926-00416] [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] [Subscribe] [Scholar Register] [Indexed: 10/09/2023]
Abstract
To develop the dressings that can both inhibit bacterial infection and actively promote healing is of great importance for wound repair and the development of medical technology. Electrical stimulation has multiple roles in wound healing, including hemostasis, antibacterial, anti-inflammatory, guidance of cell migration, promotion of re-epithelialization, and proliferation of cells. Metal micro-battery can provide a stable source of electrical stimulation energy without an external power source. Thus, the integration of metal micro-battery with medical dressings opens up new opportunities for the wireless application of electrical stimulation in wound repair. In this review, the mechanism of the effect of electrical stimulation on wound healing is systematically presented, then recent advances in metal micro-battery dressings, including preparation methods, antibacterial performance, and healing properties are mainly introduced, and the current challenges and prospects of metal micro-battery dressings are also provided.
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Affiliation(s)
- J M Chen
- College of Textile & Clothing, Qingdao University, Institute of Nonwovens and Industrial Textile Innovation, Qingdao 266071, China
| | - M Chen
- College of Textile & Clothing, Qingdao University, Institute of Nonwovens and Industrial Textile Innovation, Qingdao 266071, China
| | - X C Ren
- College of Textile & Clothing, Qingdao University, Institute of Nonwovens and Industrial Textile Innovation, Qingdao 266071, China
| | - W C Chen
- College of Textile & Clothing, Qingdao University, Institute of Nonwovens and Industrial Textile Innovation, Qingdao 266071, China
| | - N Wang
- College of Textile & Clothing, Qingdao University, Institute of Nonwovens and Industrial Textile Innovation, Qingdao 266071, China
| | - J W Li
- College of Textile & Clothing, Qingdao University, Institute of Nonwovens and Industrial Textile Innovation, Qingdao 266071, China
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Ferndale L, Ayeni OA, Chen WC, Aldous C, Thomson SR. Development and internal validation of the survival time risk score in patients treated for oesophageal cancer with palliative intent in South Africa. S AFR J SURG 2023; 61:66-74. [PMID: 37052279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/14/2023]
Abstract
BACKGROUND Most patients who present to South African state hospitals with advanced stage oesophageal squamous cell cancer (OSCC) disease receive palliative treatment. This study aimed to assess the factors that influence survival in patients with OSCC who received palliative management and to develop a prognostic score to aid clinicians in decisionmaking. METHODS Analysis of a prospectively collected database assessed factors influencing survival of patients diagnosed with OSCC receiving palliative treatment. Factors assessed included patient demographics, clinical and laboratory data and tumour factors. A multivariable logistic regression model was used to assess for significant factors associated with survival time and a prognostic score was developed and internally validated based on these factors. RESULTS There were 384 patients with a male-to-female ratio of 1.3:1. The median survival of the cohort was 3.7 months. Factors that influenced survival on multivariate analysis included area of residence (aOR 1.82, 95% CI 1.02-3.24), performance status (aOR 2.56, 95% CI 1.50-4.35), body mass index (aOR 1.87, 95% CI 1.14-3.06) and serum albumin (aOR 3.06, 95% CI 1.46-6.42). The final prognostic score contained three of the four independent variables based on the regression coefficient for each variable. After internal validation, the risk score maintained fair discrimination and good calibration. CONCLUSION The prognostic scoring system based on patient performance status, body mass index and serum albumin, if validated on an independent cohort, would allow more objective decisions on whether to stage or not prior to embarking on palliative treatment, streamlining care and improving quality of life.
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Affiliation(s)
- L Ferndale
- Department of Surgery, Grey's Hospital, South Africa and Department of Surgery, College of Health Sciences, School of Clinical Medicine, University of KwaZulu-Natal, South Africa
| | - O A Ayeni
- Division of Medical Oncology, Department of Medicine, Faculty of Health Sciences, University of the Witwatersrand, South Africa and Noncommunicable Diseases Research Division, Wits Health Consortium (Pty) Ltd, South Africa and Soweto Comprehensive Cancer Centre, Chris Hani Baragwanath Academic Hospital, South Africa
| | - W C Chen
- National Cancer Registry, National Health Laboratory Service, South Africa and Sydney Brenner Institute for Molecular Bioscience, Faculty of Health Sciences, University of the Witwatersrand, South Africa
| | - C Aldous
- College of Health Sciences, University of KwaZulu-Natal, South Africa
| | - S R Thomson
- Division of Gastroenterology, Department of Medicine, University of Cape Town, South Africa
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Lin CH, Tan YF, Tseng ST, Chen WC, Kuo CW, Wu CC, Tsai TM, Hu WL, Chang TC, Hung YC. Meridian study on the response current affected by acupuncture needling direction. Medicine (Baltimore) 2022; 101:e30338. [PMID: 36107585 PMCID: PMC9439725 DOI: 10.1097/md.0000000000030338] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Acupuncture manipulation with needling direction is important for the therapeutic effect based on traditional Chinese medicine theory. However, there is controversy over directional manipulation and therapeutic effect, despite some research showing that acupuncture manipulations may have something to do with therapeutic effect. Moreover, research usually focuses on the therapeutic effects on the acupoints and acupuncture time rather than exploring the manipulation method. This study applies a semiconductor analyzer to investigate the effects of acupuncture manipulation. 10 healthy participants were recruited for the study. We used a cross-over design to compare the effect of different manipulation on individuals. This study employed an Agilent B1500A semiconductor analyzer to investigate the electric characteristics of meridians under directional supplementation and draining manipulation. We measured the electric current of meridians under different manipulation, and compared the difference between supplementation and draining manipulation in healthy individuals. The electric current was significantly larger in supplementation manipulation compared to draining manipulation in the meridians (P < .001). The measured electric current in the same manipulation methods did not show a statistical difference between meridians (P = .094). The different directional manipulation result in different electric currents in humans. Our finding implies that the supplementation and draining manipulation may result in different therapeutic effects clinically as the description of traditional Chinese medicine theory. Therefore, directional manipulation may need to be taken into consideration in future acupuncture studies and clinical management.
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Affiliation(s)
- Chien-Hung Lin
- Department of Chinese Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Yung-Fang Tan
- Department of Electrical Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan
| | - Shih-Ting Tseng
- Department of Chinese Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Wen-Chung Chen
- Department of Electrical Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan
| | - Chuan-Wei Kuo
- Department of Electrical Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan
| | - Chia-Chuan Wu
- Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung, Taiwan
| | - Tsung-Ming Tsai
- Department of Electrical Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan
| | - Wen-Long Hu
- Department of Chinese Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
- College of Nursing, Fooyin University, Kaohsiung, Taiwan
- Kaohsiung Medical College of Medicine, Kaohsiung, Taiwan
| | - Ting-Chang Chang
- Department of Physics, National Sun Yat-Sen University, Kaohsiung, Taiwan
- *Correspondence: Yu-Chiang Hung, Department of Chinese Medicine, Kaohsiung Chang Gung Memorial Hospital, No. 123, Dapi Road, Niaosong District, Kaohsiung 833, Taiwan (e-mail: ); Ting-Chang Chang, Department of Physics, and also with the Center of Crystal Research, National Sun Yat-Sen University, Kaohsiung, 804, Taiwan (e-mail: )
| | - Yu-Chiang Hung
- Department of Chinese Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
- *Correspondence: Yu-Chiang Hung, Department of Chinese Medicine, Kaohsiung Chang Gung Memorial Hospital, No. 123, Dapi Road, Niaosong District, Kaohsiung 833, Taiwan (e-mail: ); Ting-Chang Chang, Department of Physics, and also with the Center of Crystal Research, National Sun Yat-Sen University, Kaohsiung, 804, Taiwan (e-mail: )
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Liu YW, Kuo CW, Chang TC, Hung YC, Tan YF, Wu CC, Lin CH, Chen WC, Hu WL, Tsai TM. Analysis of Meridian Flow Direction by Electrical Stimulation Method. Nanoscale Res Lett 2022; 17:64. [PMID: 35802273 PMCID: PMC9270553 DOI: 10.1186/s11671-022-03694-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 05/24/2022] [Indexed: 06/15/2023]
Abstract
Meridians constitute the theoretical foundation of acupuncture in traditional Chinese medicine (TCM), and they have been described for 2000 years. Classical TCM advocates for the directionality of meridians. Finding an accurate method to verify this directionality is an important goal of TCM doctors and researchers. In this study, we objectively explored the physical properties of meridians, such as response current from electrical stimulation, to explore their directionality. The Agilent B1500A semiconductor measurement analyzer was utilized to input the alternating current waveforms and detect the response current on the meridians. The results showed that the direction of the meridians influences the intensity of the response current. Therefore, the mechanisms behind the directions of ion transportation and the meridians were investigated using the response time and the intensity of the response current. Thereafter, we propose a model to explain this mechanism. Afterward, a comparison between the direction of the meridian in this experiment and ancient Chinese medicine classics was performed.
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Affiliation(s)
- Yan-Wen Liu
- Department of Chinese Medicine, Kaohsiung Chang Gung Memorial Hospital, 123 Dapi Road, Kaohsiung, 83301, Taiwan
| | - Chuan-Wei Kuo
- Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, 70 Lienhai Rd., Kaohsiung, 80424, Taiwan
| | - Ting-Chang Chang
- Department of Physics, National Sun Yat-Sen University, 70 Lien-hai Road, Kaohsiung, 80424, Taiwan.
- The Center of Crystal Research, National Sun Yat-Sen University, 70 Lienhai Rd., Kaohsiung, 80424, Taiwan.
| | - Yu-Chiang Hung
- Department of Chinese Medicine, Kaohsiung Chang Gung Memorial Hospital, 123 Dapi Road, Kaohsiung, 83301, Taiwan.
- School of Chinese Medicine, Chang Gung University College of Medicine, 259, Wenhua 1st Rd., Guishan District, Taoyuan, 33302, Taiwan.
| | - Yung-Fang Tan
- Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, 70 Lienhai Rd., Kaohsiung, 80424, Taiwan
| | - Chia-Chuan Wu
- Department of Electrical Engineering, National Sun Yat-Sen University, 70 Lienhai Rd., Kaohsiung, 80424, Taiwan
| | - Chien-Hung Lin
- Department of Chinese Medicine, Kaohsiung Chang Gung Memorial Hospital, 123 Dapi Road, Kaohsiung, 83301, Taiwan
| | - Wen-Chung Chen
- Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, 70 Lienhai Rd., Kaohsiung, 80424, Taiwan
| | - Wen-Long Hu
- Department of Chinese Medicine, Kaohsiung Chang Gung Memorial Hospital, 123 Dapi Road, Kaohsiung, 83301, Taiwan
- School of Chinese Medicine, Chang Gung University College of Medicine, 259, Wenhua 1st Rd., Guishan District, Taoyuan, 33302, Taiwan
- Kaohsiung Medical University of Medicine, 100, Shiquan 1st Rd., Kaohsiung, 80708, Taiwan
- Fooyin University College of Nursing, 151, Jinxue Rd., Kaohsiung, 83102, Taiwan
| | - Tsung-Ming Tsai
- Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, 70 Lienhai Rd., Kaohsiung, 80424, Taiwan
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Chen MN, Chen WC, Zhou Y. Topological hybrid semimetal phases and anomalous Hall effects in a three dimensional magnetic topological insulator. J Phys Condens Matter 2021; 34:025502. [PMID: 34636339 DOI: 10.1088/1361-648x/ac2ed7] [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] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 10/11/2021] [Indexed: 06/13/2023]
Abstract
In this work, we propose a ferromagnetic Bi2Se3as a candidate to hold the coexistence of Weyl- and nodal-line semimetal phases, which breaks the time reversal symmetry. We demonstrate that the type-I Weyl semimetal phase, type-I-, type-II- and their hybrid nodal-line semimetal phases can arise by tuning the Zeeman exchange field strength and the Fermi velocity. Their topological responses under U(1) gauge field are also discussed. Our results raise a new way for realizing Weyl and nodal-line semimetals and will be helpful in understanding the topological transport phenomena in three-dimensional material systems.
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Affiliation(s)
- M N Chen
- School of Science, Hangzhou Dianzi University, Hangzhou, 310018, People's Republic of China
| | - W C Chen
- Institute of Advanced Magnetic Materials, College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou, 310018, People's Republic of China
| | - Yu Zhou
- School of Science, Hangzhou Dianzi University, Hangzhou, 310018, People's Republic of China
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10
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Chen WC, Erwin R, Tsai P, Hassan MT, Hadad N, Majkrzak CF. A large beam high efficiency radio frequency neutron spin flipper. Rev Sci Instrum 2021; 92:063906. [PMID: 34243533 PMCID: PMC10398713 DOI: 10.1063/5.0045687] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 06/06/2021] [Indexed: 06/13/2023]
Abstract
A design for a radio frequency (RF) neutron spin flipper obtained from magneto-static and neutron spin transport simulations is presented. The RF flipper constructed from this design provides a flipping probability of 0.999 or better for a beam size 6 cm wide and 15 cm high and a wavelength band between 0.4 and 0.6 nm. Three permanent magnet guide field sections with air gaps provide a linear field gradient along the beam propagation direction over a large cross-sectional area. An RF oscillator based on coupling the resonant coil of a Hartley oscillator to the excitation coil was developed, which provides a higher current and, thereby, a larger RF amplitude, as compared to a conventional RF power amplifier. Two opaque He3 neutron spin filters were employed to measure the flipping probability of the flipper with very high precision. A spatially uniform flipping probability of 0.9995(2) or higher was measured over the large cross-sectional area neutron guide. This RF neutron spin flipper will be employed in a polychromatic beam reflectometer at the National Institute of Standards and Technology Center for Neutron Research. This design can be applied to other polarized neutron instruments or applications requiring a very high continuous flipping probability of the neutron spin for a large cross-sectional area beam.
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Affiliation(s)
- W C Chen
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
| | - R Erwin
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
| | - P Tsai
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
| | - Md T Hassan
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
| | - N Hadad
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
| | - C F Majkrzak
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
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11
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Li ZY, Liu WZ, Guang H, Chen WC, Yang YH. Silencing of long noncoding RNA H19 inhibited invasion and migration of papillary thyroid cancer cells via microRNA-138-dependent regulating of LRRK2. J BIOL REG HOMEOS AG 2021; 35:253-258. [PMID: 33506668 DOI: 10.23812/20-422-l] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Z Y Li
- Department of Ultrasound, Shenzhen Second people's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong Province, China
| | - W Z Liu
- Department of Ultrasound, Shenzhen Second people's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong Province, China
| | - H Guang
- Department of Pathology, Shenzhen Second people's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong Province, China
| | - W C Chen
- Department of Breast & Thyroid surgery, Shenzhen Second people's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong Province, China
| | - Y H Yang
- Department of Ultrasound, Shenzhen Second people's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong Province, China
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12
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Vural S, Baumgartner M, Lichtner P, Eckstein G, Hariry H, Chen WC, Ruzicka T, Melnik B, Plewig G, Wagner M, Giehl KA. Investigation of gamma secretase gene complex mutations in German population with Hidradenitis suppurativa designate a complex polygenic heritage. J Eur Acad Dermatol Venereol 2021; 35:1386-1392. [PMID: 33559291 DOI: 10.1111/jdv.17163] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Accepted: 01/14/2021] [Indexed: 12/14/2022]
Abstract
BACKGROUND Hidradenitis suppurativa (HS) is a chronic inflammatory disease affecting apocrine gland-bearing skin in the axilla, groin and under the breasts. Mutations of the gamma secretase gene complex, which is essential in the activation of Notch signalling pathways, were shown in some families with HS and in a few sporadic cases. Although an imbalance in Notch signalling is implicated in the pathogenesis, the exact mechanism of HS development is yet unknown. OBJECTIVES We aim to investigate the genetic basis of HS by determining the presence of mutations of gamma secretase gene complex in a cohort of HS patients and by searching for a disease-causing pathogenic variant in a multi-generational HS family using parametric linkage analysis. METHODS Thirty-eight patients clinically diagnosed with HS were included in this study. All exons and exon-intron boundaries of the genes encoding gamma secretase complex consisting of six genes: APH1A, APH1B, PSENEN, NCSTN, PSEN1 and PSEN2 were sequenced by Sanger technique. Genetic mapping with parametric linkage analysis for the patients in the family was performed with eight affected and four healthy individuals. The logarithm of odds was calculated. RESULTS In a sporadic patient with early-onset, severe lesions in axilla and groin, a novel single-nucleotide deletion causing frameshift in exon 1 of the NCSTN gene was identified ((NM_015331.3): c.38delG, p.(Gly13Glufs*15)). The LOD score of 1.5 was never exceeded in any region of the genome, pointing towards intricate multi-genic inheritance pattern within the affected family. CONCLUSIONS The gamma secretase gene complex mutations were rare in our cohort (3.2%). Besides, our analysis indicates a possible complex multi-genic inheritance in a seemingly autosomal dominantly inherited large HS family. Genetics of both familial and sporadic HS may be complicated in most cases, and the role of other potential genes such as autoinflammatory and modifier genes as well as environmental factors may influence the pathogenesis.
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Affiliation(s)
- S Vural
- Department of Dermatology and Allergy, Ludwig-Maximilian-University of Munich, Munich, Germany.,Department of Dermatology and Venereology, Koç University School of Medicine, İstanbul, Turkey
| | - M Baumgartner
- Department of Dermatology and Allergy, Ludwig-Maximilian-University of Munich, Munich, Germany
| | - P Lichtner
- Institute of Human Genetics, Technical University Munich, Neuherberg, Germany.,Institute of Human Genetics, Helmholtz Zentrum München, Neuherberg, Germany
| | - G Eckstein
- Institute of Human Genetics, Technical University Munich, Neuherberg, Germany.,Institute of Human Genetics, Helmholtz Zentrum München, Neuherberg, Germany
| | - H Hariry
- Gemeinschaftpraxis, Gütersloh, Germany
| | - W C Chen
- Department of Dermatology and Allergy, Technical University of Munich, Munich, Germany
| | - T Ruzicka
- Department of Dermatology and Allergy, Ludwig-Maximilian-University of Munich, Munich, Germany
| | - B Melnik
- Gemeinschaftpraxis, Gütersloh, Germany.,Department of Dermatology, Environmental Medicine and Health Theory, University of Osnabrück, Osnabrück, Germany
| | - G Plewig
- Department of Dermatology and Allergy, Ludwig-Maximilian-University of Munich, Munich, Germany
| | - M Wagner
- Institute of Human Genetics, Technical University Munich, Neuherberg, Germany.,Institute of Human Genetics, Helmholtz Zentrum München, Neuherberg, Germany
| | - K A Giehl
- Department of Dermatology and Allergy, Ludwig-Maximilian-University of Munich, Munich, Germany
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Lin CY, Zhou KJ, Chang TC, Sun LC, Tan YF, Wu CW, Yeh YH, Chen WC, Lin CC, Huang WC, Wu CH, Lin SK, Lin TH, Huang JW, Sze SM. Stabilizing resistive random access memory by constructing an oxygen reservoir with analyzed state distribution. Nanoscale 2020; 12:23532-23536. [PMID: 33237060 DOI: 10.1039/d0nr04225k] [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] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In this paper, the instability mechanism of resistive random access memory (RRAM) was investigated, and a technique was developed to stabilize the distribution of high resistance states (HRS) and better concentrate the set voltage. Due to the accumulation of oxygen, an interface-type switching characteristic was observed on the I-V curves beneath the filament-type switching behavior. In this work, the interface-type switching characteristic is used to fit the natural distribution of HRS as an analysis of the instability mechanism. According to the results, the HRS distribution is attributed to the accumulation of excess oxygen ions left from the lower oxygen content and oxygen vacancy recombination during the reset process. The proposed solution with simple plasma treatment, can create an excess oxygen reservoir by changing the surface topography of the electrode to store the surplus oxygen ions from the reset process, eliminating the oxygen accumulation effect and further improving the device stability.
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Affiliation(s)
- Chih-Yang Lin
- Department of Physics, National Sun Yat-Sen University, Kaohsiung 804, Taiwan.
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14
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Lin CY, Chen J, Chen PH, Chang TC, Wu Y, Eshraghian JK, Moon J, Yoo S, Wang YH, Chen WC, Wang ZY, Huang HC, Li Y, Miao X, Lu WD, Sze SM. Adaptive Synaptic Memory via Lithium Ion Modulation in RRAM Devices. Small 2020; 16:e2003964. [PMID: 32996256 DOI: 10.1002/smll.202003964] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [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: 06/30/2020] [Revised: 08/12/2020] [Indexed: 06/11/2023]
Abstract
Biologically plausible computing systems require fine-grain tuning of analog synaptic characteristics. In this study, lithium-doped silicate resistive random access memory with a titanium nitride (TiN) electrode mimicking biological synapses is demonstrated. Biological plausibility of this RRAM device is thought to occur due to the low ionization energy of lithium ions, which enables controllable forming and filamentary retraction spontaneously or under an applied voltage. The TiN electrode can effectively store lithium ions, a principle widely adopted from battery construction, and allows state-dependent decay to be reliably achieved. As a result, this device offers multi-bit functionality and synaptic plasticity for simulating various strengths in neuronal connections. Both short-term memory and long-term memory are emulated across dynamical timescales. Spike-timing-dependent plasticity and paired-pulse facilitation are also demonstrated. These mechanisms are capable of self-pruning to generate efficient neural networks. Time-dependent resistance decay is observed for different conductance values, which mimics both biological and artificial memory pruning and conforms to the trend of the biological brain that prunes weak synaptic connections. By faithfully emulating learning rules that exist in human's higher cortical areas from STDP to synaptic pruning, the device has the capacity to drive forward the development of highly efficient neuromorphic computing systems.
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Affiliation(s)
- Chih-Yang Lin
- Department of Physics, National Sun Yat-sen University, No.70 Lien-hai Road, Kaohsiung, 80424, Taiwan
| | - Jia Chen
- Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, No.1037 Luoyu Road, Wuhan, 430074, China
| | - Po-Hsun Chen
- Department of Applied Science, R.O.C. Naval Academy, No.669 Junxiao Road, Kaohsiung, 81345, Taiwan
- Center for Nanoscience and Nanotechnology, National Sun Yat-sen University, No.70 Lien-hai Road, Kaohsiung, 80424, Taiwan
| | - Ting-Chang Chang
- Department of Physics, The Center of Crystal Research, National Sun Yat-sen University, No.70 Lien-hai Road, Kaohsiung, 80424, Taiwan
| | - Yuting Wu
- Electrical Engineering and Computer Science, University of Michigan, No.1301 Beal Avenue, Ann Arbor, Michigan, 48109-2122, USA
| | - Jason K Eshraghian
- Electrical Engineering and Computer Science, University of Michigan, No.1301 Beal Avenue, Ann Arbor, Michigan, 48109-2122, USA
| | - John Moon
- Electrical Engineering and Computer Science, University of Michigan, No.1301 Beal Avenue, Ann Arbor, Michigan, 48109-2122, USA
| | - Sangmin Yoo
- Electrical Engineering and Computer Science, University of Michigan, No.1301 Beal Avenue, Ann Arbor, Michigan, 48109-2122, USA
| | - Yu-Hsun Wang
- Department of Electronics Engineering and Institute of Electronics, National Chiao Tung University, No.1001 University Road, Hsinchu, 30010, Taiwan
| | - Wen-Chung Chen
- Department of Materials and Optoelectronic Science, National Sun Yat-sen University, No.70 Lien-hai Road, Kaohsiung, 80424, Taiwan
| | - Zhi-Yang Wang
- Department of Materials and Optoelectronic Science, National Sun Yat-sen University, No.70 Lien-hai Road, Kaohsiung, 80424, Taiwan
| | - Hui-Chun Huang
- Department of Materials and Optoelectronic Science, National Sun Yat-sen University, No.70 Lien-hai Road, Kaohsiung, 80424, Taiwan
| | - Yi Li
- Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, No.1037 Luoyu Road, Wuhan, 430074, China
| | - Xiangshui Miao
- Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, No.1037 Luoyu Road, Wuhan, 430074, China
| | - Wei D Lu
- Electrical Engineering and Computer Science, University of Michigan, No.1301 Beal Avenue, Ann Arbor, Michigan, 48109-2122, USA
| | - Simon M Sze
- Department of Electronics Engineering and Institute of Electronics, National Chiao Tung University, No.1001 University Road, Hsinchu, 30010, Taiwan
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Chen FR, Zheng LM, Wu DC, Gong HM, Cen H, Chen WC. [Regulatory relationship between lncRNA KCNQ1OT1 and miR-146a-3p in preeclampsia]. Zhonghua Fu Chan Ke Za Zhi 2020; 55:535-543. [PMID: 32854478 DOI: 10.3760/cma.j.cn112141-20200322-00246] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To observe the changes of the expression level of long non-coding RNA (lncRNA) KCNQ1OT1 and microRNA (miR)-146a-3p in placenta tissues of preeclampsia (PE) patients, as well as their effect and mechanism on the biological functions of trophoblast cells. Methods: A total of 45 cases of hospitalized PE patients in Hainan General Hospital from July 2017 to July 2018 were selected as the PE group, 55 normal pregnant women during the same period were chosed as the control group. The expression level of KCNQ1OT1 mRNA and miR-146a-3p in the placenta tissues between two groups were detected by using quantitative real time (qRT)-PCR. Pearson's test was furtherly analyzed the correlation between them. Human trophoblast cell line (HTR8/SVneo) were randomly divided into control and lipopolysaccharide (LPS) groups, and then LPS group were divide into four sub-groups,included LPS group, short hairpin RNA (sh)-KCNQ1OT1 (after silencing the expression of KCNQ1OT1), miR-146a-3p inhibitor and sh-KCNQ1OT1+miR-146a-3p inhibitor. The targeting relationship between KCNQ1OT1 and miR-146a-3p were predicted by bioinformatics software and confirmed by luciferase assay. The cell proliferation and invasion capacities were respectively detected by cell counting kit-8 (CCK-8) and transwell assay. The expression level of KCNQ1OT1 mRNA and miR-146a-3p were detected by qRT-PCR and the protein expression level of CXC chemokine ligand 12 (CXCL12) and CXC chemokine receptor type 4 (CXCR4) were tested by western blot. Results: (1) The mRNA expression level of KCNQ1OT1 in the placenta of PE group was lower than that of control group (0.23±0.03 vs 0.51±0.04, P<0.05), and the miR-146a-3p expression level was higher than that of the control group (0.49±0.03 vs 0.31±0.03, P<0.05), there were statistical significant differences between the two groups. (2) Luciferase assay showed that there was a targeting relationship between KCNQ1OT1 and mir-146a-3p. Compared with the control group, the mRNA expression level of KCNQ1OT1 in the LPS group were significantly decreased (0.91±0.03 vs 0.35±0.03, P<0.05), and the expression level of miR-146a-3p were significantly increased (0.22±0.03 vs 0.63±0.04, P<0.05). The cell proliferation, invasion and migration capacities and the protein expression of CXCL12 and CXCR4 significantly reduced in the LPS group compared with control group (all P<0.05). The mRNA expression level of KCNQ1OT1 (0.23±0.03) in the sh-KCNQ1OT1 group were further decreased, the expression of miR-146a-3p (0.85±0.03) were further increased, and the cell proliferation, invasion and migration capacities and the protein expression of CXCL12 and CXCR4 were all further reduced compared with control group,there were significant difference between two groups (all P<0.05). Comparing the miR-146a-3p inhibitor group, and sh-KCNQ1OT1+miR-146a-3p inhibitor group with the sh-KCNQ1OT1 group, respectively, the expression level of KCNQ1OT1 mRNA (0.78±0.04 vs 0.50±0.03) increased, and the expression level of miR-146a-3p (0.42±0.03 vs 0.46±0.03) decreased, the cell proliferation, invasion and migration capacities and the protein expression of CXCL12 and CXCR4 were all increased ,there were statistically significant differences (all P<0.05). Conclusion: KCNQ1OT1 could target the regulation of miR-146a-3p through CXCL12/CXCR4 pathway in the proliferation, invasion an migration of HTR8/SVneo cells, which may be involved in the pathogenesis of PE.
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Hung YC, Chen WC, Chang TC, Zheng HX, Liu YW, Tan YF, Lin SK, Lu YH, Hu WL, Tsai TM. Meridian study on the response current affected by electrical pulse and acupuncture. Nanoscale Res Lett 2020; 15:146. [PMID: 32651748 PMCID: PMC7352033 DOI: 10.1186/s11671-020-03373-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 06/23/2020] [Indexed: 05/10/2023]
Abstract
Acupuncture and its meridians are important components of traditional Chinese medicine, and numerous opinions have been previously expressed regarding these meridians. This study aims to explore the phenomenon of meridians from the perspective of electronic physics by studying these meridians for the response current affected by electrical pulse and acupuncture. In this study, acupuncture which applies an electrical pulse was used to research the physical properties of the meridians. Different kinds of pulses were applied to the human body to realize abnormal electrical signals. Comparing these electrical measurement results with the isothermal transient ionic current (ITIC) theory, we found that the transmission of meridian messages may be related to ion conduction. The movement of ions induced by acupuncture and electrical stimulation can lead to drift and diffusion currents through the meridians. The ionic conduction of meridian hypothesis is proved in that the substances delivered by meridians are in fact ions.
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Affiliation(s)
- Yu-Chiang Hung
- Department of Chinese Medicine, Kaohsiung Chang Gung Memorial Hospital, 123 Dapi Road, Kaohsiung, 83301, Taiwan.
- School of Chinese medicine, Chang Gung University College of Medicine, 259, Wenhua 1st Rd., Guishan Dist., Taoyuan, 33302, Taiwan.
| | - Wen-Chung Chen
- Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, 70 Lienhai Rd, Kaohsiung, 80424, Taiwan
| | - Ting-Chang Chang
- Department of Physics, National Sun Yat-Sen University, 70 Lien-hai Road, Kaohsiung, 80424, Taiwan.
- The Center of Crystal Research, National Sun Yat-Sen University, Kaohsiung, 804, Taiwan.
| | - Hao-Xuan Zheng
- Department of Physics, National Sun Yat-Sen University, 70 Lien-hai Road, Kaohsiung, 80424, Taiwan
| | - Yan-Wen Liu
- Department of Chinese Medicine, Kaohsiung Chang Gung Memorial Hospital, 123 Dapi Road, Kaohsiung, 83301, Taiwan
| | - Yung-Fang Tan
- Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, 70 Lienhai Rd, Kaohsiung, 80424, Taiwan
| | - Shih-Kai Lin
- Institute of Electronics Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Ying-Hsin Lu
- Department of Physics, National Sun Yat-Sen University, 70 Lien-hai Road, Kaohsiung, 80424, Taiwan
| | - Wen-Long Hu
- Department of Chinese Medicine, Kaohsiung Chang Gung Memorial Hospital, 123 Dapi Road, Kaohsiung, 83301, Taiwan
- School of Chinese medicine, Chang Gung University College of Medicine, 259, Wenhua 1st Rd., Guishan Dist., Taoyuan, 33302, Taiwan
- College of Nursing, Fooyin University, 151, Jinxue Rd, Kaohsiung, 83102, Taiwan
- Kaohsiung Medical College of Medicine, 100, Shiquan 1st Rd., Kaohsiung, 80708, Taiwan
| | - Tsung-Ming Tsai
- Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, 70 Lienhai Rd, Kaohsiung, 80424, Taiwan
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17
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Lin WT, Liu CC, Wang SM, Ho TS, Yu YT, Chen WC, Shen CF. Actinomyces and Actinobacillus mixed infection with abdominal wall and intrathoracic pseudotumor. Pediatr Neonatol 2020; 61:245-247. [PMID: 31575460 DOI: 10.1016/j.pedneo.2019.08.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 06/13/2019] [Accepted: 08/15/2019] [Indexed: 10/26/2022] Open
Affiliation(s)
- Wei-Ting Lin
- Department of Pediatrics, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Ching-Chuan Liu
- Department of Pediatrics, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan; Center of Infectious Disease and Signaling Research, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Shih-Min Wang
- Department of Pediatrics, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan; Center of Infectious Disease and Signaling Research, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan; Department of Emergency Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Tzong-Shiann Ho
- Department of Pediatrics, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan; Center of Infectious Disease and Signaling Research, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan; Department of Emergency Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yu-Ting Yu
- Department of Pathology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Wen-Chung Chen
- Department of Pathology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Ching-Fen Shen
- Department of Pediatrics, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
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18
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Chen WC, Lin WC, Yang CH, Wu CN, Luo SD. Autonomic dysfunction as an independent risk factor for uncontrolled inflammation in chronic rhinosinusitis following functional endoscopic sinus surgery. Rhinology 2019; 0:2224. [PMID: 31886799 DOI: 10.4193/rhin19.238] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Chronic rhinosinusitis (CRS) is a multi-factorial disorder that causes systemic symptoms beyond rhinologic symptoms alone. A possible association between autonomic nervous system (ANS) dysfunction and CRS has been identified; however, few studies have confirmed this observation. In this study, we prospectively measured changes in ANS dysfunction symptoms following functional endoscopic sinus surgery (FESS) and explored the impact of ANS dysfunction on surgical outcomes of CRS. METHODOLOGY Patients diagnosed with CRS who consented to surgical intervention were included prospectively. All patients completed the Sino-nasal Outcome Test-22 (SNOT-22) and the 31-item Composite Autonomic Symptom Score (COMPASS 31) questionnaires before the operation and during the follow-up period. Clinical demographic data, Lund-Mackay, and modified Lund-Kennedy scores were recorded and measured. RESULTS A total of 102 patients were enrolled. The median SNOT-22 and COMPASS 31 scores significantly improved following FESS from 43.0 to 14.0 and 21.0 to 11.2 (all P less than 0.001), respectively. FESS led to a significant reduction in the prevalence of various ANS dysfunction symptoms. In multivariate analyses, revision surgeries (odds ratio [OR] 5.012, 95% confidence interval [CI] 1.52416.489; P=0.008), CRS with nasal polyps (OR 4.071, 95% CI 1.454-11.40; P=0.008), and higher Pre-FESS COMPASS 31 scores (OR 1.043, 95% CI 1.003-1.084; P=0.036) were independent risk factors for uncontrolled inflammation following FESS. CONCLUSIONS ANS dysfunction symptoms are prevalent in CRS and higher preoperative COMPASS 31 scores correspond with poor surgical outcomes. Following FESS, the majority of ANS dysfunction symptoms can be alleviated. Further investigations are required to explore the possible mechanism of how ANS is involved in the pathogenesis of CRS.
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Affiliation(s)
- W C Chen
- Department of Otolaryngology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
- Tajen University College of Pharmacy and Health care, Pingtung, Taiwan
| | - W C Lin
- Department of Diagnostic Radiology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - C H Yang
- Department of Otolaryngology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - C N Wu
- Department of Otolaryngology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - S D Luo
- Department of Otolaryngology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
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19
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Kim MG, Winn B, Chi S, Savici AT, Rodriguez-Rivera JA, Chen WC, Xu X, Li Y, Kim JW, Cheong SW, Kiryukhin V. Spin-liquid-like state in pure and Mn-doped TbInO 3 with a nearly triangular lattice. Phys Rev B 2019; 100:10.1103/PhysRevB.100.024405. [PMID: 38712019 PMCID: PMC11071068 DOI: 10.1103/physrevb.100.024405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
Inelastic neutron scattering studies in single crystals of TbInO3 and TbIn0.95Mn0.05O3 with nearly triangular antiferromagnetic lattice are reported. At low energies, a broad and apparently gapless continuum of magnetic excitations, located at the triangular lattice (TL) Brillouin zone boundary, is observed. The data are well described by the uncorrelated nearest-neighbor valence bonds model. At higher energies, a broad excitation branch dispersing from the TL zone boundary is observed. No signs of static magnetic order are found down to the temperatures two orders of magnitude smaller than the effective interaction energy. The fluctuating magnetic moment exceeds two-thirds of the Tb3+ free-ion value and is confined to the TL plane. These observations are consistent with a TL-based spin liquid state in TbInO3.
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Affiliation(s)
- M G Kim
- Department of Physics & Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA
| | - B Winn
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - S Chi
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - A T Savici
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - J A Rodriguez-Rivera
- NIST Center for Neutron Research, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, Maryland 20899, USA
- Department of Materials Science, University of Maryland, College Park, Maryland 20742, USA
| | - W C Chen
- NIST Center for Neutron Research, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, Maryland 20899, USA
- Department of Materials Science, University of Maryland, College Park, Maryland 20742, USA
| | - X Xu
- Department of Physics & Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA
| | - Y Li
- Department of Physics & Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA
| | - J W Kim
- Department of Physics & Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA
| | - S-W Cheong
- Department of Physics & Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA
| | - V Kiryukhin
- Department of Physics & Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA
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20
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Zhang J, Pajerowski DM, Botana AS, Zheng H, Harriger L, Rodriguez-Rivera J, Ruff JPC, Schreiber NJ, Wang B, Chen YS, Chen WC, Norman MR, Rosenkranz S, Mitchell JF, Phelan D. Spin Stripe Order in a Square Planar Trilayer Nickelate. Phys Rev Lett 2019; 122:247201. [PMID: 31322403 DOI: 10.1103/physrevlett.122.247201] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 03/14/2019] [Indexed: 06/10/2023]
Abstract
Trilayer nickelates, which exhibit a high degree of orbital polarization combined with an electron count (d^{8.67}) corresponding to overdoped cuprates, have been identified as a promising candidate platform for achieving high-T_{c} superconductivity. One such material, La_{4}Ni_{3}O_{8}, undergoes a semiconductor-insulator transition at ∼105 K, which was recently shown to arise from the formation of charge stripes. However, an outstanding issue has been the origin of an anomaly in the magnetic susceptibility at the transition and whether it signifies the formation of spin stripes akin to single layer nickelates. Here we report single crystal neutron diffraction measurements (both polarized and unpolarized) that establish that the ground state is indeed magnetic. The ordering is modeled as antiferromagnetic spin stripes that are commensurate with the charge stripes, the magnetic ordering occurring in individual trilayers that are essentially uncorrelated along the crystallographic c axis. A comparison of the charge and spin stripe order parameters reveals that, in contrast to single-layer nickelates such as La_{2-x}Sr_{x}NiO_{4} as well as related quasi-2D oxides including manganites, cobaltates, and cuprates, these orders uniquely appear simultaneously, thus demonstrating a stronger coupling between spin and charge than in these related low-dimensional correlated oxides.
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Affiliation(s)
- Junjie Zhang
- Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
- Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - D M Pajerowski
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - A S Botana
- Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
- Department of Physics, Arizona State University, Tempe, Arizona 85287, USA
| | - Hong Zheng
- Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - L Harriger
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
| | - J Rodriguez-Rivera
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
- Department of Materials Sciences, University of Maryland, College Park, Maryland 20742, USA
| | - J P C Ruff
- CHESS, Cornell University, Ithaca, New York 14853, USA
| | - N J Schreiber
- Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14853, USA
| | - B Wang
- Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - Yu-Sheng Chen
- ChemMatCARS, The University of Chicago, Argonne, Illinois 60439, USA
| | - W C Chen
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
- Department of Materials Sciences, University of Maryland, College Park, Maryland 20742, USA
| | - M R Norman
- Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - S Rosenkranz
- Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - J F Mitchell
- Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - D Phelan
- Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
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21
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Baal JD, Chen WC, Solomon DA, Pai JS, Lucas CH, Hara JH, Oberheim Bush NA, McDermott MW, Raleigh DR, Villanueva-Meyer JE. Preoperative MR Imaging to Differentiate Chordoid Meningiomas from Other Meningioma Histologic Subtypes. AJNR Am J Neuroradiol 2019; 40:433-439. [PMID: 30819773 DOI: 10.3174/ajnr.a5996] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Accepted: 01/14/2019] [Indexed: 01/01/2023]
Abstract
BACKGROUND AND PURPOSE Chordoid meningiomas are uncommon WHO grade II primary intracranial neoplasms that possess unique chordoid histology and follow an aggressive clinical course. Our aim was to assess the utility of qualitative MR imaging features and quantitative apparent diffusion coefficient values as distinguishing preoperative MR imaging metrics to identify and differentiate chordoid histology from other meningioma histologic subtypes. MATERIALS AND METHODS Twenty-one patients with meningiomas with chordoid histology, which included both chordoid meningiomas (>50% chordoid histology) and meningiomas with focal chordoid histology (<50% chordoid histology) with available preoperative MR imaging examinations, including diffusion-weighted imaging, were identified. Qualitative imaging features and quantitative ADC values were compared between meningiomas with chordoid histology and 42 nonchordoid meningiomas (29 WHO grade I, eleven WHO grade II, and 2 WHO grade III). RESULTS The median ADC (10-3mm2/s) of meningiomas with chordoid histology was significantly higher than nonchordoid meningiomas (1.16 versus 0.92, P < .001), as was the median normalized ADC (1.60 versus 1.19, P < .001). In subgroup analysis, the median and normalized ADC values of chordoid meningiomas (n = 11) were significantly higher than those in meningiomas with focal chordoid histology (n = 10, P < .001 and P < .001, respectively) or nonchordoid meningiomas (n = 42, P < .001 and <0.001, respectively). Median and normalized ADC values were not significantly different between the meningiomas with focal chordoid histology and nonchordoid meningiomas (P = .816 and .301, respectively). Among the qualitative imaging features, only DWI signal intensity was significantly associated with meningiomas with chordoid histology diagnosis. CONCLUSIONS ADC values are higher in chordoid compared with nonchordoid meningiomas and may be used to discriminate the degree of chordoid histology in meningiomas. While qualitative MR imaging features do not strongly discriminate chordoid from nonchordoid meningiomas, DWI may allow preoperative identification of chordoid meningiomas.
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Affiliation(s)
- J D Baal
- From the Departments of Radiology and Biomedical Imaging (J.D.B., J.E.V.-M.)
| | - W C Chen
- Radiation Oncology (W.C.C., J.S.P., J.H.H., D.R.R.)
| | | | - J S Pai
- Radiation Oncology (W.C.C., J.S.P., J.H.H., D.R.R.)
| | | | - J H Hara
- Radiation Oncology (W.C.C., J.S.P., J.H.H., D.R.R.)
| | - N A Oberheim Bush
- Neurological Surgery (N.A.O.B., M.W.M.), University of California San Francisco, San Francisco, California
| | - M W McDermott
- Neurological Surgery (N.A.O.B., M.W.M.), University of California San Francisco, San Francisco, California
| | - D R Raleigh
- Radiation Oncology (W.C.C., J.S.P., J.H.H., D.R.R.)
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Li MY, Zhang DQ, Lu X, Chen WC. [Comparison of two serological methods in screening gastric cancer and its precancerous condition]. Zhonghua Nei Ke Za Zhi 2019; 57:907-911. [PMID: 30486559 DOI: 10.3760/cma.j.issn.0578-1426.2018.12.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To compare the diagnostic value of the old "ABC" method [serum pepsinogen(PG) combined with Helicobacter pylori (Hp) IgG antibody] and the new "ABC" method [serum pepsinogen plus gastrin-17(G-17)] in screening gastric cancer and its precancerous condition. Methods: Serum PG, G-17 and Hp-IgG were quantified by enzyme-linked immunosorbent assay (ELISA) in 278 subjects. Subjects were grouped according to the criteria of two methods. The gastroscopy and pathological biopsy were gold standard. Results: The positive rate of old "ABC" method was 74.46% (207/278), which was 54.68% of new "ABC" method (151/278). For the diagnosis of gastric cancer, the sensitivity and specificity of the old "ABC" method were 90.74% and 29.46% respectively, with diagnostic coincidence rate 41.37%. The sensitivity and specificity of the new "ABC" method were 92.59% and 54.46% respectively, with diagnostic coincidence rate 61.87%. As to the diagnosis of pre-cancerous state, the sensitivity and specificity of the old "ABC" method were 75.81% and 36.00%, with diagnostic coincidence rate 58.03%. The sensitivity and specificity of the new "ABC" method were 62.10% and 75.00%, with diagnostic coincidence rate 67.86%. Conclusions: Compared with the old "ABC" method, the new "ABC" method has higher sensitivity, specificity and diagnostic coincidence rate for the diagnosis of gastric cancer, yet higher specificity and lower sensitivity for the diagnosis of precancerous conditions.
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Affiliation(s)
- M Y Li
- Department of Gastroenterology, The First Affiliated Hospital of Soochow University, Suzhou 215006, China
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23
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Chen WC, Wu G, Zhang W, Zhu YZ, Zhou Y, Zhang H, Xia XB, Sun PC. [Clinical outcomes of gastric cancer patients received capecitabine based adjuvant chemotherapy and the corresponding pharmacogenomics analysis]. Zhonghua Yi Xue Za Zhi 2018; 98:3420-3425. [PMID: 30440137 DOI: 10.3760/cma.j.issn.0376-2491.2018.42.009] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the association between Thymidine phosphorylase(TYMP)genetic variation and clinical outcomes of postoperative gastric cancer (GC) patients received capecitabine based regimens. Methods: A total of 198 GC patients underwent surgical treatment and received capecitabine based adjuvant chemotherapy were included in this retrospective study. Peripheral blood and the postoperative tissue specimen of the GC patients were collected for the genotyping of polymorphism and TYMP mRNA expression, respectively. The correlation between polymorphism and clinical outcomes and safety of postoperative GC patients were analysed. Results: Located in the upstream, rs11479 was of clinical significance. The prevalence of rs11479 in TYMP among the GC patients were as follows: CC genotype 125 cases (63.13%), CT genotype 65 cases (32.83%), TT genotype 8 cases (4.04%), minor allele frequency of rs11479 is 0.20. The distribution of three genotypes were in accordance with Hardy-Weinberg Equilibrium (P=0.901). The analysis results of patients with different genotypes found that the 3-year disease free survival rate of the patients with CT/TT genotype and CC genotype were 73.97% and 65.60%, respectively, which was statistically significant (P=0.003). In terms of overall survival, the 3-year overall survival rate of the two genotypes were 83.56% and 72.80% (P=0.012), respectively. Adjusted in multivariate Cox regression analysis, CT/TT genotype was an independent favorable factor for disease free survival (OR=0.55, P=0.011). Safety analysis indicated that there was no significant association between genotypes and grade 2 adverse reaction. Additionally, of the 79 postoperative tissue specimens, the results showed that the expression of TYMP in cancer tissues of the patients with CT/TT genotypes were significantly higher than those of the wild type CC genotype patients (P<0.001). Conclusion: The polymorphism rs11479 of TYMP have favorable influence on the clinical outcomes of gastric cancer patients received capecitabine based adjuvant chemotherapy treatment through changing the mRNA expression of TYMP.
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Affiliation(s)
- W C Chen
- Department of Gastrointestinal Surgery, the People's Hospital of Zhengzhou University, Zhengzhou 450003, China
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24
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Chuah YY, Lee YY, Chen WC, Kao SS. Sengstaken-Blakemore tube malposition with esophageal rupture. Acta Gastroenterol Belg 2018; 81:447-448. [PMID: 30350541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Affiliation(s)
- Yoen Young Chuah
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Ping Tung Christian Hospital, Ping Tung, Taiwan
| | - Y Y Lee
- Department of Medicine, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
| | - W C Chen
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
| | - S S Kao
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
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25
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Huang WT, Tsai YH, Chen SH, Kuo CW, Kuo YL, Lee KT, Chen WC, Wu PC, Chuang CY, Cheng SM, Lin CH, Leung EY, Chang YC, Cheung CHA. HDAC2 and HDAC5 Up-Regulations Modulate Survivin and miR-125a-5p Expressions and Promote Hormone Therapy Resistance in Estrogen Receptor Positive Breast Cancer Cells. Front Pharmacol 2017; 8:902. [PMID: 29326587 PMCID: PMC5736991 DOI: 10.3389/fphar.2017.00902] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Accepted: 11/27/2017] [Indexed: 12/18/2022] Open
Abstract
Intrinsic or acquired resistance to hormone therapy is frequently reported in estrogen receptor positive (ER+) breast cancer patients. Even though dysregulations of histone deacetylases (HDACs) are known to promote cancer cells survival, the role of different HDACs in the induction of hormone therapy resistance in ER+ breast cancer remains unclear. Survivin is a well-known pro-tumor survival molecule and miR-125a-5p is a recently discovered tumor suppressor. In this study, we found that ER+, hormone-independent, tamoxifen-resistant MCF7-TamC3 cells exhibit increased expression of HDAC2, HDAC5, and survivin, but show decreased expression of miR-125a-5p, as compared to the parental tamoxifen-sensitive MCF7 breast cancer cells. Molecular down-regulations of HDAC2, HDAC5, and survivin, and ectopic over-expression of miR-125a-5p, increased the sensitivity of MCF7-TamC3 cells to estrogen deprivation and restored the sensitivity to tamoxifen. The same treatments also further increased the sensitivity to estrogen-deprivation in the ER+ hormone-dependent ZR-75-1 breast cancer cells in vitro. Kaplan-Meier analysis and receiver operating characteristic curve analysis of expression cohorts of breast tumor showed that high HDAC2 and survivin, and low miR-125a-5p, expression levels correlate with poor relapse-free survival in endocrine therapy and tamoxifen-treated ER+ breast cancer patients. Further molecular analysis revealed that HDAC2 and HDAC5 positively modulates the expression of survivin, and negatively regulates the expression miR-125a-5p, in ER+ MCF7, MCF7-TamC3, and ZR-75-1 breast cancer cells. These findings indicate that dysregulations of HDAC2 and HDAC5 promote the development of hormone independency and tamoxifen resistance in ERC breast cancer cells in part through expression regulation of survivin and miR-125a-5p.
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Affiliation(s)
- Wen-Tsung Huang
- Division of Hematology and Oncology, Department of Internal Medicine, Chi-Mei Medical Center, Liouying, Tainan, Taiwan
| | - Yu-Hsuan Tsai
- Department of Pharmacology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Shang-Hung Chen
- National Institute of Cancer Research, National Health Research Institutes, Tainan, Taiwan.,Division of Oncology and Hematology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Ching-Wen Kuo
- Department of Pharmacology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yao-Lung Kuo
- Department of Surgery, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Kuo-Ting Lee
- Department of Surgery, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Wen-Chung Chen
- Department of Pathology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Pei Chih Wu
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan
| | - Chun-Yu Chuang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan
| | - Siao Muk Cheng
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chun-Hui Lin
- Department of Pharmacology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Euphemia Yee Leung
- Auckland Cancer Society Research Centre and Department of Molecular Medicine and Pathology, University of Auckland, Auckland, New Zealand
| | - Yung-Chieh Chang
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chun Hei Antonio Cheung
- Department of Pharmacology, College of Medicine, National Cheng Kung University, Tainan, Taiwan.,Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
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Yuan FY, Deng N, Shih CC, Tseng YT, Chang TC, Chang KC, Wang MH, Chen WC, Zheng HX, Wu H, Qian H, Sze SM. Conduction Mechanism and Improved Endurance in HfO 2-Based RRAM with Nitridation Treatment. Nanoscale Res Lett 2017; 12:574. [PMID: 29075921 PMCID: PMC5658308 DOI: 10.1186/s11671-017-2330-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Accepted: 09/26/2017] [Indexed: 06/07/2023]
Abstract
A nitridation treatment technology with a urea/ammonia complex nitrogen source improved resistive switching property in HfO2-based resistive random access memory (RRAM). The nitridation treatment produced a high performance and reliable device which results in superior endurance (more than 109 cycles) and a self-compliance effect. Thus, the current conduction mechanism changed due to defect passivation by nitrogen atoms in the HfO2 thin film. At a high resistance state (HRS), it transferred to Schottky emission from Poole-Frenkel in HfO2-based RRAM. At low resistance state (LRS), the current conduction mechanism was space charge limited current (SCLC) after the nitridation treatment, which suggests that the nitrogen atoms form Hf-N-Ox vacancy clusters (Vo+) which limit electron movement through the switching layer.
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Affiliation(s)
- Fang-Yuan Yuan
- Institute of Microelectronics, Tsinghua University, Beijing, 100084, China
| | - Ning Deng
- Institute of Microelectronics, Tsinghua University, Beijing, 100084, China.
- Tsinghua National Laboratory for Information Science and Technology (TNList), Beijing, 100084, China.
| | - Chih-Cheng Shih
- Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan
- Department of Physics, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan
| | - Yi-Ting Tseng
- Department of Physics, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan
| | - Ting-Chang Chang
- Department of Physics, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan.
- Advanced Optoelectronics Technology Center, National Cheng Kung University, Tainan, 70101, Taiwan.
| | - Kuan-Chang Chang
- School of Electronic and Computer Engineering, Peking University, Shenzhen, 518055, China
| | - Ming-Hui Wang
- Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan
| | - Wen-Chung Chen
- Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan
| | - Hao-Xuan Zheng
- Department of Physics, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan
| | - Huaqiang Wu
- Institute of Microelectronics, Tsinghua University, Beijing, 100084, China
- Tsinghua National Laboratory for Information Science and Technology (TNList), Beijing, 100084, China
| | - He Qian
- Institute of Microelectronics, Tsinghua University, Beijing, 100084, China
- Tsinghua National Laboratory for Information Science and Technology (TNList), Beijing, 100084, China
| | - Simon M Sze
- Department of Electronics Engineering, National Chiao Tung University, Hsinchu, 300, Taiwan
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Zhang X, Su X, Chen WC, Li Y, Yang ZY, Deng WZ, Deng TC, Yang AK. [ RET/ PTC rearrangement affects multifocal formation of papillary thyroid carcinoma]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2017. [PMID: 28635216 DOI: 10.3760/cma.j.issn.1673-0860.2017.06.008] [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] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective:RET/PTC gene rearrangement can lead to aberrant activation of tyrosine kinase receptors, which is a common mutation in papillary thyroid carcinoma (PTC). This study focuses on the association of RET/PTC rearrangements with PTC clinical factors. Methods: From January 2011 to December 2013, a total of 114 patients with PTC were enrolled in this study. Clinicopathological parameters, lifestyle, and thyroid hormone levels were collected. RET/PTC rearrangements were detected by TaqMan PCR and verified by Sanger sequencing.Data were analyzed with SPSS software, including chi-square test, Fisher's exact test, Mann-Whitney U test, Student's t-test, and Logistic regression. Results:RET/PTC rearrangements were not found in all paracancerous normal thyroid tissues, and were detected in 23.68% (27/114) of PTC. Further analysis revealed no correlation between RET/PTC rearrangement and thyroid function, clinicopathologic parameters, and lifestyle in the total PTC group or in the subgroup of patients with concomitant diseases (including Hashimoto's thyroiditis and nodular goiter). But in the subgroup of PTC without concomitant disease, RET/PTC rearrangement was associated with tumor multifocal (P=0.018), and RET/PTC-positive PTC patients had an increased risk of tumor multifocal (OR=5.57, 95% CI 1.39-22.33). It was also found that RET/PTC rearrangement was associated with an abnormal increase in TSH level of one month after surgery (P= 0.037). Conclusion: Nodular goiter and Hashimoto 's thyroiditis may be a confounding factor in PTC. RET/PTC rearrangement may play an important role in the occurrence of thyroid carcinoma multifocal after exclusion of this confounding factor.
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Affiliation(s)
- X Zhang
- Department of Head and Neck Surgery, Sun Yat-Sen University Cancer Center, Guangzhou 510060, China
| | - X Su
- Department of Head and Neck Surgery, Sun Yat-Sen University Cancer Center, Guangzhou 510060, China
| | - W C Chen
- Department of Head and Neck Surgery, Sun Yat-Sen University Cancer Center, Guangzhou 510060, China
| | - Y Li
- Department of Head and Neck Surgery, Sun Yat-Sen University Cancer Center, Guangzhou 510060, China
| | - Z Y Yang
- Department of Head and Neck Surgery, Sun Yat-Sen University Cancer Center, Guangzhou 510060, China
| | - W Z Deng
- Department of Head and Neck Surgery, Sun Yat-Sen University Cancer Center, Guangzhou 510060, China
| | - T C Deng
- Department of Head and Neck Surgery, Sun Yat-Sen University Cancer Center, Guangzhou 510060, China
| | - A K Yang
- Department of Head and Neck Surgery, Sun Yat-Sen University Cancer Center, Guangzhou 510060, China
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Hsu HP, Loh ZJ, Lee KT, Chung WP, Chen WC, Kuo HL, Chen PJ, Lu HH. Invasive lobular carcinoma of breast with synchronous colon metastasis. Formos J Surg 2017. [DOI: 10.4103/fjs.fjs_22_17] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Chang HT, Liu CS, Chou CT, Hsieh CH, Chang CH, Chen WC, Liu SI, Hsu SS, Chen JS, Jiann BP, Huang JK, Jan CR. Econazole induces increases in free intracellular Ca2+ concentrations in human osteosarcoma cells. Hum Exp Toxicol 2016; 24:453-8. [PMID: 16235734 DOI: 10.1191/0960327105ht558oa] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Econazole is an antifungal drug with different in vitro effects. However, econazole's effect on osteoblast like cells is unknown. In human MG63 osteosarcoma cells, the effect of econazole on intracellular Ca2+ concentrations ([Ca2+]i) was explored by using fura-2. At a concentration of 0.1 μM, econazole started to cause a rise in [Ca2+]i in a concentration-dependent manner. Econazole-induced [Ca2+]i rise was reduced by 74% by removal of extracellular Ca2+. The econazole-induced Ca2+ influx was mediated via a nimodipine-sensitive pathway. In Ca2+ free medium, thapsigargin, an inhibitor of the endoplasmic reticulum Ca2+ ATPase, caused a [Ca2+]i rise, after which the increasing effect of econazole on [Ca2+]i was abolished. Pretreatment of cells with econazole to deplete Ca2+ stores totally prevented thapsigargin from releasing Ca2+. U73122, an inhibitor of phospholipase C, abolished histamine (an inositol 1,4,5-trisphosphate dependent Ca2+ mobilizer)-induced, but not econazoleinduced, [Ca2+]i rise. Econazole inhibited 76% of thapsigargin-induced store-operated Ca2+ entry. These findings suggest that in MG63 osteosarcoma cells, econazole increases [Ca2+]i by stimulating Ca2+ influx and Ca2+ release from the endoplasmic reticulum via a phospholipase C-independent manner. In contrast, econazole acts as a potent blocker of store-operated Ca2+ entry.
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Affiliation(s)
- H T Chang
- Department of Surgery, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
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30
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Hsu EC, Kulp SK, Huang HL, Tu HJ, Chao MW, Tseng YC, Yang MC, Salunke SB, Sullivan NJ, Chen WC, Zhang J, Teng CM, Fu WM, Sun D, Wicha MS, Shapiro CL, Chen CS. Integrin-linked kinase as a novel molecular switch of the IL-6-NF-κB signaling loop in breast cancer. Carcinogenesis 2016; 37:430-442. [PMID: 26905583 DOI: 10.1093/carcin/bgw020] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Accepted: 02/05/2016] [Indexed: 12/11/2022] Open
Abstract
Substantial evidence has clearly demonstrated the role of the IL-6-NF-κB signaling loop in promoting aggressive phenotypes in breast cancer. However, the exact mechanism by which this inflammatory loop is regulated remains to be defined. Here, we report that integrin-linked kinase (ILK) acts as a molecular switch for this feedback loop. Specifically, we show that IL-6 induces ILK expression via E2F1 upregulation, which, in turn, activates NF-κB signaling to facilitate IL-6 production. shRNA-mediated knockdown or pharmacological inhibition of ILK disrupted this IL-6-NF-κB signaling loop, and blocked IL-6-induced cancer stem cells in vitro and estrogen-independent tumor growth in vivo Together, these findings establish ILK as an intermediary effector of the IL-6-NF-κB feedback loop and a promising therapeutic target for breast cancer.
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Affiliation(s)
- En-Chi Hsu
- Division of Medicinal Chemistry and Pharmacognosy , College of Pharmacy , The Ohio State University , Columbus, OH 43210 , USA
| | - Samuel K Kulp
- Division of Medicinal Chemistry and Pharmacognosy , College of Pharmacy , The Ohio State University , Columbus, OH 43210 , USA
| | - Han-Li Huang
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, USA.,Department of Pharmacology, College of Medicine, National Taiwan University, Taipei 10051, Taiwan
| | - Huang-Ju Tu
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, USA.,Department of Pharmacology, College of Medicine, National Taiwan University, Taipei 10051, Taiwan
| | - Min-Wu Chao
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, USA.,Department of Pharmacology, College of Medicine, National Taiwan University, Taipei 10051, Taiwan
| | - Yu-Chou Tseng
- Division of Medicinal Chemistry and Pharmacognosy , College of Pharmacy , The Ohio State University , Columbus, OH 43210 , USA
| | - Ming-Chen Yang
- Division of Medicinal Chemistry and Pharmacognosy , College of Pharmacy , The Ohio State University , Columbus, OH 43210 , USA
| | - Santosh B Salunke
- Division of Medicinal Chemistry and Pharmacognosy , College of Pharmacy , The Ohio State University , Columbus, OH 43210 , USA
| | - Nicholas J Sullivan
- Department of Molecular Virology , Immunology , and Medical Genetics , College of Medicine , The Ohio State University , Columbus , OH 43210 , USA
| | - Wen-Chung Chen
- Department of Pathology , College of Medicine , National Cheng Kung University , Tainan 701 , Taiwan
| | - Jianying Zhang
- Center for Biostatistics , College of Medicine , The Ohio State University , Columbus , OH 43210 , USA
| | - Che-Ming Teng
- Department of Pharmacology , College of Medicine , National Taiwan University , Taipei 10051 , Taiwan
| | - Wen-Mei Fu
- Department of Pharmacology , College of Medicine , National Taiwan University , Taipei 10051 , Taiwan
| | - Duxin Sun
- Department of Pharmaceutical Sciences , College of Pharmacy , University of Michigan , Ann Arbor , MI 48109 , USA
| | - Max S Wicha
- Department of Internal Medicine , University of Michigan Medical School , University of Michigan Comprehensive Cancer Center , Ann Arbor, MI 48109 , USA
| | - Charles L Shapiro
- Division of Hematology and Medical Oncology, Tisch Cancer Institute, Mount Sinai Medical Center , New York, NY 10029 , USA and
| | - Ching-Shih Chen
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, USA.,Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan
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Etchin J, Montero J, Berezovskaya A, Le BT, Kentsis A, Christie AL, Conway AS, Chen WC, Reed C, Mansour MR, Ng CEL, Adamia S, Rodig SJ, Galinsky IA, Stone RM, Klebanov B, Landesman Y, Kauffman M, Shacham S, Kung AL, Wang JCY, Letai A, Look AT. Activity of a selective inhibitor of nuclear export, selinexor (KPT-330), against AML-initiating cells engrafted into immunosuppressed NSG mice. Leukemia 2016; 30:190-9. [PMID: 26202935 PMCID: PMC4994896 DOI: 10.1038/leu.2015.194] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 05/28/2015] [Accepted: 06/29/2015] [Indexed: 01/08/2023]
Abstract
Currently available combination chemotherapy for acute myeloid leukemia (AML) often fails to result in long-term remissions, emphasizing the need for novel therapeutic strategies. We reasoned that targeted inhibition of a prominent nuclear exporter, XPO1/CRM1, could eradicate self-renewing leukemia-initiating cells (LICs) whose survival depends on timely XPO1-mediated transport of specific protein and RNA cargoes. Using an immunosuppressed mouse model bearing primary patient-derived AML cells, we demonstrate that selinexor (KPT-330), an oral antagonist of XPO1 that is currently in clinical trials, has strong activity against primary AML cells while sparing normal stem and progenitor cells. Importantly, limiting dilution transplantation assays showed that this cytotoxic activity is not limited to the rapidly proliferating bulk population of leukemic cells but extends to the LICs, whose inherent drug resistance and unrestricted self-renewal capacity has been implicated in the difficulty of curing AML patients with conventional chemotherapy alone.
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Affiliation(s)
- J Etchin
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, and Division of Hematology/Oncology, Children’s Hospital Boston, Harvard Medical School, Boston, MA, USA
- Division of Hematology/Oncology, Children's Hospital, Boston, MA, USA
| | - J Montero
- Department of Medical Oncology, Dana-Farber Cancer Institute, and Harvard Medical School, Boston, MA, USA
| | - A Berezovskaya
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, and Division of Hematology/Oncology, Children’s Hospital Boston, Harvard Medical School, Boston, MA, USA
| | - BT Le
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, and Division of Hematology/Oncology, Children’s Hospital Boston, Harvard Medical School, Boston, MA, USA
| | - A Kentsis
- Memorial Sloan-Kettering Cancer Center, New York, NY, USA
| | - AL Christie
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, and Division of Hematology/Oncology, Children’s Hospital Boston, Harvard Medical School, Boston, MA, USA
| | - AS Conway
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, and Division of Hematology/Oncology, Children’s Hospital Boston, Harvard Medical School, Boston, MA, USA
| | - WC Chen
- Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
- Department of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - C Reed
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, and Division of Hematology/Oncology, Children’s Hospital Boston, Harvard Medical School, Boston, MA, USA
| | - MR Mansour
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, and Division of Hematology/Oncology, Children’s Hospital Boston, Harvard Medical School, Boston, MA, USA
- Department of Haematology, UCL Cancer Institute, University College London, London, UK
| | - CEL Ng
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, and Division of Hematology/Oncology, Children’s Hospital Boston, Harvard Medical School, Boston, MA, USA
| | - S Adamia
- Department of Medical Oncology, Dana-Farber Cancer Institute, and Harvard Medical School, Boston, MA, USA
| | - SJ Rodig
- Department of Pathology, Brigham and Women’s Hospital, Boston, MA, USA
| | - IA Galinsky
- Department of Medical Oncology, Dana-Farber Cancer Institute, and Harvard Medical School, Boston, MA, USA
| | - RM Stone
- Department of Medical Oncology, Dana-Farber Cancer Institute, and Harvard Medical School, Boston, MA, USA
| | - B Klebanov
- Karyopharm Therapeutics, Natick, MA, USA
| | | | - M Kauffman
- Karyopharm Therapeutics, Natick, MA, USA
| | - S Shacham
- Karyopharm Therapeutics, Natick, MA, USA
| | - AL Kung
- Division of Pediatric Hematology/Oncology/Stem Cell Transplantation, Columbia University Medical Center, New York, NY, USA
| | - JCY Wang
- Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
- Department of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - A Letai
- Department of Medical Oncology, Dana-Farber Cancer Institute, and Harvard Medical School, Boston, MA, USA
| | - AT Look
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, and Division of Hematology/Oncology, Children’s Hospital Boston, Harvard Medical School, Boston, MA, USA
- Division of Hematology/Oncology, Children's Hospital, Boston, MA, USA
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Jheng HF, Tsai PJ, Chuang YL, Shen YT, Tai TA, Chen WC, Chou CK, Ho LC, Tang MJ, Lai KTA, Sung JM, Tsai YS. Albumin stimulates renal tubular inflammation through an HSP70-TLR4 axis in mice with early diabetic nephropathy. Dis Model Mech 2015; 8:1311-21. [PMID: 26398934 PMCID: PMC4610229 DOI: 10.1242/dmm.019398] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Accepted: 07/29/2015] [Indexed: 02/06/2023] Open
Abstract
Increased urinary albumin excretion is not simply an aftermath of glomerular injury, but is also involved in the progression of diabetic nephropathy (DN). Whereas Toll-like receptors (TLRs) are incriminated in the renal inflammation of DN, whether and how albumin is involved in the TLR-related renal inflammatory response remains to be clarified. Here, we showed that both TLR2 and TLR4, one of their putative endogenous ligands [heat shock protein 70 (HSP70)] and nuclear factor-κB promoter activity were markedly elevated in the kidneys of diabetic mice. A deficiency of TLR4 but not of TLR2 alleviated albuminuria, tubulointerstitial fibrosis and inflammation induced by diabetes. The protection against renal injury in diabetic Tlr4−/− mice was associated with reduced tubular injuries and preserved cubilin levels, rather than amelioration of glomerular lesions. In vitro studies revealed that albumin, a stronger inducer than high glucose (HG), induced the release of HSP70 from proximal tubular cells. HSP70 blockade ameliorated albumin-induced inflammatory mediators. HSP70 triggered the production of inflammatory mediators in a TLR4-dependent manner. Moreover, HSP70 inhibition in vivo ameliorated diabetes-induced albuminuria, inflammatory response and tubular injury. Finally, we found that individuals with DN had higher levels of TLR4 and HSP70 in the dilated tubules than non-diabetic controls. Thus, activation of the HSP70-TLR4 axis, stimulated at least in part by albumin, in the tubular cell is a newly identified mechanism associated with induction of tubulointerstitial inflammation and aggravation of pre-existing microalbuminuria in the progression of DN. Summary: Activation of the HSP70-TLR4 axis by albumin in the tubular cell induces tubular inflammation and injury.
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Affiliation(s)
- Huei-Fen Jheng
- Institute of Basic Medical Sciences, National Cheng Kung University, Tainan 701, Taiwan Institute of Clinical Medicine, National Cheng Kung University, Tainan 701, Taiwan
| | - Pei-Jane Tsai
- Institute of Basic Medical Sciences, National Cheng Kung University, Tainan 701, Taiwan Department of Medical Laboratory Science and Biotechnology, National Cheng Kung University, Tainan 701, Taiwan
| | - Yi-Lun Chuang
- Department of Physiology, National Cheng Kung University, Tainan 701, Taiwan
| | - Yi-Ting Shen
- Division of Nephrology, Department of Internal Medicine, National Cheng Kung University Hospital, Tainan 704, Taiwan
| | - Ting-An Tai
- Department of Physiology, National Cheng Kung University, Tainan 701, Taiwan
| | - Wen-Chung Chen
- Department of Pathology, National Cheng Kung University Hospital, Tainan 704, Taiwan
| | - Chuan-Kai Chou
- National Laboratory Animal Center, National Applied Research Laboratories, Taipei 115, Taiwan
| | - Li-Chun Ho
- Division of Nephrology, Department of Internal Medicine, E-DA Hospital/I-Shou University, Kaohsiung 824, Taiwan
| | - Ming-Jer Tang
- Department of Physiology, National Cheng Kung University, Tainan 701, Taiwan
| | | | - Junne-Ming Sung
- Division of Nephrology, Department of Internal Medicine, National Cheng Kung University Hospital, Tainan 704, Taiwan
| | - Yau-Sheng Tsai
- Institute of Basic Medical Sciences, National Cheng Kung University, Tainan 701, Taiwan Institute of Clinical Medicine, National Cheng Kung University, Tainan 701, Taiwan Research Center of Clinical Medicine, National Cheng Kung University Hospital, Tainan 704, Taiwan, Republic of China
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Chen HHW, Chen WC, Liang ZD, Tsai WB, Long Y, Aiba I, Fu S, Broaddus R, Liu J, Feun LG, Savaraj N, Kuo MT. Targeting drug transport mechanisms for improving platinum-based cancer chemotherapy. Expert Opin Ther Targets 2015; 19:1307-17. [PMID: 26004625 DOI: 10.1517/14728222.2015.1043269] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [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: 12/16/2022]
Abstract
INTRODUCTION Platinum (Pt)-based antitumor agents remain important chemotherapeutic agents for treating many human malignancies. Elevated expression of the human high-affinity copper transporter 1 (hCtr1), resulting in enhanced Pt drug transport into cells, has been shown to be associated with improved treatment efficacy. Thus, targeting hCtr1 upregulation is an attractive strategy for improving the treatment efficacy of Pt-based cancer chemotherapy. AREA COVERED Regulation of hCtr1 expression by cellular copper homeostasis is discussed. Association of elevated hCtr1 expression with intrinsic sensitivity of ovarian cancer to Pt drugs is presented. Mechanism of copper-lowering agents in enhancing hCtr1-mediated cis-diamminedichloroplatinum (II) (cisplatin, cDDP) transport is reviewed. Applications of copper chelation strategy in overcoming cDDP resistance through enhanced hCtr1 expression are evaluated. EXPERT OPINION While both transcriptional and post-translational mechanisms of hCtr1 regulation by cellular copper bioavailability have been proposed, detailed molecular insights into hCtr1 regulation by copper homeostasis remain needed. Recent clinical study using a copper-lowering agent in enhancing hCtr1-mediated drug transport has achieved incremental improvement in overcoming Pt drug resistance. Further improvements in identifying predictive measures in the subpopulation of patients that can benefit from the treatment are needed.
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Affiliation(s)
- Helen H W Chen
- a 1 National Cheng Kung University, National Cheng Kung University Hospital, College of Medicine, Department of Radiation Oncology , Tainan, Taiwan
| | - Wen-Chung Chen
- b 2 National Cheng Kung University, National Cheng Kung University Hospital, College of Medicine, Department of Pathology , Tainan, Taiwan
| | - Zhang-Dong Liang
- c 3 The University of Texas MD Anderson Cancer Center, Department of Translational Molecular Pathology , Houston, TX 77030, USA
| | - Wen-Bin Tsai
- c 3 The University of Texas MD Anderson Cancer Center, Department of Translational Molecular Pathology , Houston, TX 77030, USA
| | - Yan Long
- d 4 The University of Texas MD Anderson Cancer Center, Department of Translational Molecular Pathology , Houston, TX 77030, USA
| | - Isamu Aiba
- e 5 The University of Texas MD Anderson Cancer Center, Department of Translational Molecular Pathology , Houston, TX 77030, USA
| | - Siqing Fu
- f 6 The University of Texas MD Anderson Cancer Center, Departments of Investigative Cancer Therapeutics , Houston, TX, USA
| | - Russell Broaddus
- g 7 The University of Texas MD Anderson Cancer Center, Departments of Pathology , Houston, TX, USA
| | - Jinsong Liu
- g 7 The University of Texas MD Anderson Cancer Center, Departments of Pathology , Houston, TX, USA
| | - Lynn G Feun
- h 8 University of Miami, Sylvester Comprehensive Cancer Center , 1475 NW 12th Avenue, Miami, FL 33136, USA
| | - Niramol Savaraj
- h 8 University of Miami, Sylvester Comprehensive Cancer Center , 1475 NW 12th Avenue, Miami, FL 33136, USA
| | - Macus Tien Kuo
- i 9 The University of Texas MD Anderson Cancer Center, Department of Translational Molecular Pathology , Unit 2951, LSP 9.4206, 2130 W. Holcombe Blvd, Houston, TX 77030, USA +1 713 834 6038 ; +1 713 834 6085 ;
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Yu R, Chen WC, Chiu KY, Lu S, Liu YC, Ko HY, Wu HC, Hsieh WC, Lee ZJ, Zhang P, Shi L, Liu M, Chang KC, Su IJ, Su P, Yeh YM. HER2 testing in breast cancer by quantitative PCR: technical and clinical considerations. J Clin Oncol 2015. [DOI: 10.1200/jco.2015.33.15_suppl.e11619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Rong Yu
- Genetics Development Corporation, Lake Bluff, IL
| | | | | | - Sunny Lu
- Genetics Development Corporation, Chicago, IL
| | | | | | - Han-Chieh Wu
- National Institute of Infectious Diseases and Vaccinology, National Health Research Institutes, Tainan, Taiwan
| | | | - Zi-jia Lee
- Shanghai GenePharma Co. Ltd, Shanghai, China
| | - Peter Zhang
- Shanghai GenePharma Co. Ltd, Shanghai, China
| | - Lili Shi
- Shanghai GenePharma Co. Ltd, Shanghai, China
| | - Ming Liu
- General Biologicals Corporation, Hsinchu, Taiwan
| | | | - Ih-Jen Su
- National Institute of Infectious Diseases and Vaccinology, National Health Research Institutes, Tainan, Taiwan
| | - Peggy Su
- General Biological Corporation, Hsinchu, Taiwan
| | - Yu-Ming Yeh
- General Biologicals Corporation, Hsinchu, Taiwan
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Abstract
The study aimed to describe the prevalence of sarcopenia and discussed the applicability of different diagnostic criteria in Chinese older adults. 286 Chinese adults (136 men and 150 women) aged 60-88 were recruited. The prevalence of sarcopenia were calculated using different diagnostic criteria. Physical functioning was compared in sarcopenic and non-sarcopenic older adults. Compared with the standard of EWGSOP (European Working Group on Sarcopenia in Older People), the prevalence of sarcopenia was higher when the IWGS (International Working Group on Sarcopenia) standard was applied (Men: 7.4% vs. 0.8%; Women: 4.7% vs. 0%). If the AWGS (Aisa Working Group on Sarcopenia) standard was applied, the prevalence was 5.9% in men and 0.7% in women. In conclusion, the prevalence of sarcopenia in Chinese older adults ranged from 0% to around 10% when the diagnostic criteria of IGWS, EWGSOP and AGWS were applied. Further studies are still needed to investigate appropriate diagnostic criterion of sarcopenia for Chinese population.
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Affiliation(s)
- X Wen
- Xu Wen, , Department of Physical Education, college of education, Zhejiang University
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36
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Parnell SR, Washington AL, Li K, Yan H, Stonaha P, Li F, Wang T, Walsh A, Chen WC, Parnell AJ, Fairclough JPA, Baxter DV, Snow WM, Pynn R. Spin echo small angle neutron scattering using a continuously pumped (3)He neutron polarisation analyser. Rev Sci Instrum 2015; 86:023902. [PMID: 25725858 DOI: 10.1063/1.4909544] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Accepted: 02/08/2015] [Indexed: 06/04/2023]
Abstract
We present a new instrument for spin echo small angle neutron scattering (SESANS) developed at the Low Energy Neutron Source at Indiana University. A description of the various instrument components is given along with the performance of these components. At the heart of the instrument are a series of resistive coils to encode the neutron trajectory into the neutron polarisation. These are shown to work well over a broad range of neutron wavelengths. Neutron polarisation analysis is accomplished using a continuously operating neutron spin filter polarised by Rb spin-exchange optical pumping of (3)He. We describe the performance of the analyser along with a study of the (3)He polarisation stability and its implications for SESANS measurements. Scattering from silica Stöber particles is investigated and agrees with samples run on similar instruments.
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Affiliation(s)
- S R Parnell
- Centre for Exploration of Energy and Matter, Indiana University, Bloomington, Indiana 47408, USA
| | - A L Washington
- Centre for Exploration of Energy and Matter, Indiana University, Bloomington, Indiana 47408, USA
| | - K Li
- Centre for Exploration of Energy and Matter, Indiana University, Bloomington, Indiana 47408, USA
| | - H Yan
- Centre for Exploration of Energy and Matter, Indiana University, Bloomington, Indiana 47408, USA
| | - P Stonaha
- Centre for Exploration of Energy and Matter, Indiana University, Bloomington, Indiana 47408, USA
| | - F Li
- Centre for Exploration of Energy and Matter, Indiana University, Bloomington, Indiana 47408, USA
| | - T Wang
- Centre for Exploration of Energy and Matter, Indiana University, Bloomington, Indiana 47408, USA
| | - A Walsh
- Department of Chemistry, The University of Sheffield, Sheffield S3 7HF, United Kingdom
| | - W C Chen
- National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
| | - A J Parnell
- Department of Physics and Astronomy, The University of Sheffield, Sheffield S3 7RH, United Kingdom
| | - J P A Fairclough
- Department of Mechanical Engineering, The University of Sheffield, Sheffield S1 3DJ, United Kingdom
| | - D V Baxter
- Centre for Exploration of Energy and Matter, Indiana University, Bloomington, Indiana 47408, USA
| | - W M Snow
- Centre for Exploration of Energy and Matter, Indiana University, Bloomington, Indiana 47408, USA
| | - R Pynn
- Centre for Exploration of Energy and Matter, Indiana University, Bloomington, Indiana 47408, USA
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Chen WC, Gentile TR, Erwin R, Watson S, Ye Q, Krycka KL, Maranville BB. 3He spin filter based polarized neutron capability at the NIST Center for Neutron Research. ACTA ACUST UNITED AC 2014. [DOI: 10.1088/1742-6596/528/1/012014] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Lochan A, Macaulay S, Chen WC, Mahlangu JN, Krause A. Genetic factors influencing inhibitor development in a cohort of South African haemophilia A patients. Haemophilia 2014; 20:687-92. [PMID: 24953131 DOI: 10.1111/hae.12436] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/09/2014] [Indexed: 11/29/2022]
Abstract
A critical complication of factor VIII (FVIII) replacement therapy in Haemophilia A (HA) treatment is inhibitor development. Known genetic factors predisposing to inhibitor development include FVIII (F8) gene mutations, ethnicity, a family history of inhibitors and FVIII haplotype mismatch. The aim of this study was to characterize and correlate these genetic factors in a cohort of South African HA patients. This was a retrospective study that included 229 patients and involved the analysis of patient files, HA molecular and clinical databases and molecular analysis of the F8 gene haplotype. Of the 229 patients, 51% were of black ethnicity, 49% were white, 5% had mild HA, 4% were moderate and 91% were severe, 36% were int22 positive and 13% were inhibitor positive. Of the inhibitor positive patients, 72% were black patients. Inhibitors were reported in 27% of black int22 positive patients, 13% of black int22 negative patients, 9% of white int22 positive patients and 7% of white int22 negative. The H1 haplotype was more common in whites (75%) and H2 was more common in blacks (74%). H3 and H5 were only found in black patients and had a higher frequency of inhibitor development than H1 and H2. In this small HA cohort, black patients had a significantly higher frequency of inhibitor development and the results were indicative of an association between inhibitor development, ethnicity and haplotype.
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Affiliation(s)
- A Lochan
- Division of Human Genetics, National Health Laboratory Service (NHLS) and School of Pathology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, Gauteng, South Africa
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Tsai HF, Song HL, Chen WC, Chang CM, Chang CH, Lee IW. Delayed uterine rupture occurred 4 weeks after cesarean section following sexual intercourse: a case report and literature review. Taiwan J Obstet Gynecol 2014; 52:411-4. [PMID: 24075383 DOI: 10.1016/j.tjog.2012.04.041] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [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] [Accepted: 04/06/2012] [Indexed: 11/20/2022] Open
Abstract
OBJECTIVE Spontaneous delayed uterine rupture is life-threatening and extremely rare following sexual intercourse in postpartum. Here, we present a case of delayed uterine rupture that occurred 4 weeks after cesarean section following intercourse. CASE REPORT A 31-year-old postpartum woman, gravida 4, para 1, abortion 3, underwent a cesarean section for prolonged labor. She was transferred to our hospital in shock status with brisk vaginal bleeding following intercourse 4 weeks after delivery. An emergency subtotal hysterectomy was performed to stop the bleeding. The pathology confirmed tissue necrosis and suture granuloma at the previous surgical wound. CONCLUSION The presented case demonstrated that delayed uterine rupture may occur even 4 weeks after delivery following intercourse, without any obvious abdominal pain or infection signs, which deserved the attention of obstetricians.
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Affiliation(s)
- Hsing-Fen Tsai
- Department of Obstetrics and Gynecology, National Cheng Kung University Hospital, Tainan, Taiwan; College of Medicine, National Cheng Kung University, Tainan, Taiwan
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40
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Chuang YK, Chen S, Lo YM, Yang IC, Cheng YF, Wang CY, Tsai CY, Hsieh RM, Wang KH, Lai CC, Chen WC. Quantification of bioactive gentiopicroside in the medicinal plant Gentiana scabra Bunge using near infrared spectroscopy. J Food Drug Anal 2013. [DOI: 10.1016/j.jfda.2013.07.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Chen WC, Maru DM, Abraham SC, Tan D, Raju GS. Endoscopic clip tamponade of bleeding: a novel adjunct technique for endoscopic mucosal resection. Endoscopy 2013; 45 Suppl 2 UCTN:E104-5. [PMID: 23526499 DOI: 10.1055/s-0032-1326280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Affiliation(s)
- W C Chen
- Department of Medicine, The Methodist Hospital, Weill Cornell Medical College, Houston, Texas, USA
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42
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Chen WC, Weston B, Krishna SG, Gomez G, Rashid A, Katz MH, Lee JE, Raju GS. Prolonged endoscopic loop ligation for removal of gastrointestinal tumors. Endoscopy 2013; 45 Suppl 2 UCTN:E69-70. [PMID: 23526523 DOI: 10.1055/s-0032-1326075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Affiliation(s)
- W C Chen
- Department of Medicine, The Methodist Hospital, Weill Cornell Medical College, Houston, Texas, USA
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43
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Kuo YL, Chen WC, Yao WJ, Cheng L, Hsu HP, Lai HW, Kuo SJ, Chen DR, Chang TW. Validation of Memorial Sloan–Kettering Cancer Center nomogram for prediction of non-sentinel lymph node metastasis in sentinel lymph node positive breast cancer patients an international comparison. Int J Surg 2013; 11:538-43. [DOI: 10.1016/j.ijsu.2013.05.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Revised: 04/15/2013] [Accepted: 05/14/2013] [Indexed: 01/17/2023]
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44
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Chen WC, Lai YH, Chen HY, Guo HR, Su IJ, Chen HHW. Interleukin-17-producing cell infiltration in the breast cancer tumour microenvironment is a poor prognostic factor. Histopathology 2013; 63:225-33. [PMID: 23738752 DOI: 10.1111/his.12156] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2012] [Accepted: 03/29/2013] [Indexed: 12/11/2022]
Abstract
AIMS Interleukin-17 (IL-17) is a proinflammatory cytokine that is most prominently produced by T-helper type 17 (Th17) cells, a distinct CD4+ T-helper cell subset. The aim of this study was to investigate the level of IL-17-producing cells in the breast cancer tumour microenvironment and its prognostic role. METHODS AND RESULTS A total of 207 breast carcinoma specimens were assessed by IL-17 immunohistochemistry, and the findings were correlated with clinicopathological parameters. We found that increased numbers of IL-17-producing cells were correlated with high histological grade, negative ER/PR status, and triple-negative molecular subtypes segregated by immunoprofiles. However, they did not correlate with stage, tumour size, nodal status, HER2 status, or histological type. Patients with tumours with high numbers of IL-17-producing cells had shorter disease-free survival (DFS) than patients with tumours with low numbers of IL-17-producing cells (P < 0.01). In multivariate analysis, high IL-17 level [hazard ratio (HR) 2.24; 95% CI 1.06-4.75], advanced T stage (HR 2.73; 95% CI 1.30-5.73), positive HER2 status (HR 4.88; 95% CI 1.47-16.18) and triple-negative subtype (HR 7.46; 95% CI 1.38-40.36) were significant prognostic factors for DFS. CONCLUSIONS Our results indicate that a high level of IL-17-producing cells in the breast cancer tumour microenvironment is a poor prognostic factor.
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Affiliation(s)
- Wen-Chung Chen
- Department of Pathology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
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45
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Lo YC, Chen WC, Huang WT, Lin YC, Liu MC, Kuo HW, Chuang JH, Yang JR, Liu MT, Wu HS, Yang CH, Chou JH, Chang FY. Surveillance of avian influenza A(H7N9) virus infection in humans and detection of the first imported human case in Taiwan, 3 April to 10 May 2013. Euro Surveill 2013. [DOI: 10.2807/ese.18.20.20479-en] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [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
On 3 April 2013, suspected and confirmed cases of influenza A(H7N9) virus infection became notifiable in the primary care sector in Taiwan, and detection of the virus became part of the surveillance of severe community-acquired pneumonia. On 24 April, the first imported case, reported through both surveillance systems, was confirmed in a man returning from China by sequencing from endotracheal aspirates after two negative throat swabs. Three of 139 contacts were ill and tested influenza A(H7N9)-negative.
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Affiliation(s)
- Y C Lo
- Centers for Disease Control, Taipei, Taiwan
| | - W C Chen
- Centers for Disease Control, Taipei, Taiwan
| | - W T Huang
- Centers for Disease Control, Taipei, Taiwan
| | - Y C Lin
- Centers for Disease Control, Taipei, Taiwan
| | - M C Liu
- Centers for Disease Control, Taipei, Taiwan
| | - H W Kuo
- Centers for Disease Control, Taipei, Taiwan
| | - J H Chuang
- Centers for Disease Control, Taipei, Taiwan
| | - J R Yang
- Centers for Disease Control, Taipei, Taiwan
| | - M T Liu
- Centers for Disease Control, Taipei, Taiwan
| | - H S Wu
- Centers for Disease Control, Taipei, Taiwan
| | - C H Yang
- Centers for Disease Control, Taipei, Taiwan
| | - J H Chou
- Centers for Disease Control, Taipei, Taiwan
| | - F Y Chang
- Centers for Disease Control, Taipei, Taiwan
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46
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Lo YC, Chen WC, Huang WT, Lin YC, Liu MC, Kuo HW, Chuang JH, Yang JR, Liu MT, Wu HS, Yang CH, Chou JH, Chang FY. Surveillance of avian influenza A(H7N9) virus infection in humans and detection of the first imported human case in Taiwan, 3 April to 10 May 2013. Euro Surveill 2013; 18:20479. [PMID: 23725865] [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: 06/02/2023] Open
Abstract
On 3 April 2013, suspected and confirmed cases of influenza A(H7N9) virus infection became notifiable in the primary care sector in Taiwan, and detection of the virus became part of the surveillance of severe community-acquired pneumonia. On 24 April, the first imported case, reported through both surveillance systems, was confirmed in a man returning from China by sequencing from endotracheal aspirates after two negative throat swabs. Three of 139 contacts were ill and tested influenza A(H7N9)-negative.
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Affiliation(s)
- Y C Lo
- Centers for Disease Control, Taipei, Taiwan
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47
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Chen CC, Liou SW, Chen CC, Chen WC, Hu FR, Wang IJ, Lin SJ. Coenzyme Q10 rescues ethanol-induced corneal fibroblast apoptosis through the inhibition of caspase-2 activation. J Biol Chem 2013; 288:11689-704. [PMID: 23430247 DOI: 10.1074/jbc.m112.401844] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Recent studies indicate that caspase-2 is involved in the early stages of apoptosis, particularly before the occurrence of mitochondrial damage. Here we report the important role of the coenzyme Q10 (CoQ10) on the activity of caspase-2 upstream of mitochondria in ethanol (EtOH)-treated corneal fibroblasts. After EtOH exposure, cells produce excessive reactive oxygen species formation, p53 expression, and most importantly, caspase-2 activation. After the activation of the caspase-2, the cells exhibited hallmarks of apoptotic pathway, such as mitochondrial damage and translocation of Bax and cytochrome c, which were then followed by caspase-3 activation. By pretreating the cells with a cell-permeable, biotinylated pan-caspase inhibitor, we identified caspase-2 as an initiator caspase in EtOH-treated corneal fibroblasts. Loss of caspase-2 inhibited EtOH-induced apoptosis. We further found that caspase-2 acts upstream of mitochondria to mediate EtOH-induced apoptosis. The loss of caspase-2 significantly inhibited EtOH-induced mitochondrial dysfunction, Bax translocation, and cytochrome c release from mitochondria. The pretreatment of CoQ10 prevented EtOH-induced caspase-2 activation and mitochondria-mediated apoptosis. Our data demonstrated that by blocking caspase-2 activity, CoQ10 can protect the cells from mitochondrial membrane change, apoptotic protein translocation, and apoptosis. Taken together, EtOH-induced mitochondria-mediated apoptosis is initiated by caspase-2 activation, which is regulated by CoQ10.
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Affiliation(s)
- Chun-Chen Chen
- Department of Ophthalmology, Taipei City Hospital Renai Branch, Taipei, Taiwan 106
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Thampy V, Kang J, Rodriguez-Rivera JA, Bao W, Savici AT, Hu J, Liu TJ, Qian B, Fobes D, Mao ZQ, Fu CB, Chen WC, Ye Q, Erwin RW, Gentile TR, Tesanovic Z, Broholm C. Friedel-like oscillations from interstitial iron in superconducting Fe(1+y)Te0.62Se0.38. Phys Rev Lett 2012; 108:107002. [PMID: 22463442 DOI: 10.1103/physrevlett.108.107002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2011] [Indexed: 05/31/2023]
Abstract
Using polarized and unpolarized neutron scattering, we show that interstitial Fe in superconducting Fe(1+y)Te(1-x)Se(x) induces a magnetic Friedel-like oscillation that diffracts at Q⊥=(1/2 0) and involves >50 neighboring Fe sites. The interstitial >2μ(B) moment is surrounded by compensating ferromagnetic four-spin clusters that may seed double stripe ordering in Fe(1+y)Te. A semimetallic five-band model with (1/2 1/2) Fermi surface nesting and fourfold symmetric superexchange between interstitial Fe and two in-plane nearest neighbors largely accounts for the observed diffraction.
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Affiliation(s)
- V Thampy
- Institute for Quantum Matter and Department of Physics and Astronomy, Johns Hopkins University, Baltimore, Maryland 21218, USA
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Ramazanoglu M, Laver M, Ratcliff W, Watson SM, Chen WC, Jackson A, Kothapalli K, Lee S, Cheong SW, Kiryukhin V. Local weak ferromagnetism in single-crystalline ferroelectric BiFeO3. Phys Rev Lett 2011; 107:207206. [PMID: 22181767 DOI: 10.1103/physrevlett.107.207206] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2011] [Indexed: 05/05/2023]
Abstract
Polarized small-angle neutron scattering studies of single-crystalline multiferroic BiFeO(3) reveal a long-wavelength spin density wave generated by ∼1° spin canting of the spins out of the rotation plane of the antiferromagnetic cycloidal order. This signifies weak ferromagnetism within mesoscopic regions of dimension 0.03 microns along [110], to several microns along [111], confirming a long-standing theoretical prediction. The average local magnetization is 0.06 μ(B)/Fe. Our results provide an indication of the intrinsic macroscopic magnetization to be expected in ferroelectric BiFeO(3) thin films under strain, where the magnetic cycloid is suppressed.
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Affiliation(s)
- M Ramazanoglu
- Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA
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50
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Chen HHW, Yan JJ, Chen WC, Kuo MT, Lai YH, Lai WW, Liu HS, Su WC. Predictive and prognostic value of human copper transporter 1 (hCtr1) in patients with stage III non-small-cell lung cancer receiving first-line platinum-based doublet chemotherapy. Lung Cancer 2011; 75:228-34. [PMID: 21788094 DOI: 10.1016/j.lungcan.2011.06.011] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2011] [Revised: 05/31/2011] [Accepted: 06/27/2011] [Indexed: 12/14/2022]
Abstract
BACKGROUND Recent studies have shown that human copper transporter 1 (hCtr1), the major copper influx transporter, is involved in the transport of platinum-based antitumor agents. We investigated the predictive and prognostic values of hCtr1, and copper efflux transporters ATP7A and ATP7B, in patients with locally advanced non-small cell lung cancer (NSCLC) receiving first-line platinum-based chemotherapy. METHODS From 2004 to 2009, we identified 54 consecutive stage III NSCLC patients who underwent first-line platinum-based doublet chemotherapy. Immunohistochemical studies of hCtr1, ATP7A and ATP7B on the paraffin-embedded pre-treatment tumor samples were performed and correlated with chemotherapy response and survival. RESULTS Overexpression of hCtr1, ATP7A and ATP7B were observed in 68%, 48% and 74% of the participants, respectively. hCtr1 overexpression was associated with better chemotherapy responses (P<0.01); whereas ATP7A and ATP7B were not. Patients with hCtr1 overexpressing tumors had better progression-free survival (PFS) and overall survival (OS) (P=0.01 and 0.047, respectively). In multivariate analyses for chemotherapy response and PFS, only hCtr1 overexpression emerged as a favorable independent predictive and prognostic factor (all P<0.01). CONCLUSION This is the first report to state that hCtr1 is not only an independent predictor of platinum-based chemotherapy response but also a prognostic factor in stage III NSCLC.
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Affiliation(s)
- Helen H W Chen
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan
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