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Wei P, Lamont B, He T, Xue W, Wang PC, Song W, Zhang R, Keyhani AB, Zhao S, Lu W, Dong F, Gao R, Yu J, Huang Y, Tang L, Lu K, Ma J, Xiong Z, Chen L, Wan N, Wang B, He W, Teng M, Dian Y, Wang Y, Zeng L, Lin C, Dai M, Zhou Z, Xiao W, Yan Z. Vegetation-fire feedbacks increase subtropical wildfire risk in scrubland and reduce it in forests. J Environ Manage 2024; 351:119726. [PMID: 38052142 DOI: 10.1016/j.jenvman.2023.119726] [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] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 11/20/2023] [Accepted: 11/25/2023] [Indexed: 12/07/2023]
Abstract
Climate dictates wildfire activity around the world. But East and Southeast Asia are an apparent exception as fire-activity variation there is unrelated to climatic variables. In subtropical China, fire activity decreased by 80% between 2003 and 2020 amid increased fire risks globally. Here, we assessed the fire regime, vegetation structure, fuel flammability and their interactions across subtropical Hubei, China. We show that tree basal area (TBA) and fuel flammability explained 60% of fire-frequency variance. Fire frequency and fuel flammability, in turn, explained 90% of TBA variance. These results reveal a novel system of scrubland-forest stabilized by vegetation-fire feedbacks. Frequent fires promote the persistence of derelict scrubland through positive vegetation-fire feedbacks; in forest, vegetation-fire feedbacks are negative and suppress fire. Thus, we attribute the decrease in wildfire activity to reforestation programs that concurrently increase forest coverage and foster negative vegetation-fire feedbacks that suppress wildfire.
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Affiliation(s)
- P Wei
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
| | - B Lamont
- Ecology Section, School of Molecular and Life Sciences, Curtin University, Perth, WA 6845, Australia.
| | - T He
- College of Science Engineering & Education, Murdoch University, Murdoch, WA 6150, Australia.
| | - W Xue
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
| | - P C Wang
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
| | - W Song
- College of Agronomy, Northwest Agriculture & Forestry University, Xianyang, 712100, China.
| | - R Zhang
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
| | - A B Keyhani
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
| | - S Zhao
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
| | - W Lu
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
| | - F Dong
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
| | - R Gao
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
| | - J Yu
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
| | - Y Huang
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
| | - L Tang
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
| | - K Lu
- Hubei Forestry Survey and Design Institute, East Lake Science and Technology, District, Wuhan, 430074, Hubei, China.
| | - J Ma
- Hubei Forestry Survey and Design Institute, East Lake Science and Technology, District, Wuhan, 430074, Hubei, China.
| | - Z Xiong
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
| | - L Chen
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
| | - N Wan
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
| | - B Wang
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
| | - W He
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
| | - M Teng
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
| | - Y Dian
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
| | - Y Wang
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
| | - L Zeng
- Key Laboratory of Forest Ecology and Environment, Chinese Academy of Forestry, Beijing, 100091, China.
| | - C Lin
- Hubei Forestry Survey and Design Institute, East Lake Science and Technology, District, Wuhan, 430074, Hubei, China.
| | - M Dai
- Hubei Forestry Survey and Design Institute, East Lake Science and Technology, District, Wuhan, 430074, Hubei, China.
| | - Z Zhou
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
| | - W Xiao
- Key Laboratory of Forest Ecology and Environment, Chinese Academy of Forestry, Beijing, 100091, China.
| | - Z Yan
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
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He H, Wang JL, Jin M, Yuan ZQ, Teng M. [Study on the current status and relationship between psychological capital and compassion fatigue with work engagement of clinical nurses]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2023; 41:818-824. [PMID: 38073208 DOI: 10.3760/cma.j.cn121094-20221017-00495] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 12/18/2023]
Abstract
Objective: To explore the relationship between clinical nurses' psychological capital, compassion fatigue with work engagement, and analyze the mediating effect of psychological capital between compassion fatigue and work engagement, so as to provide scientific evidence for reducing compassion fatigue and improving work engagement of clinical nurses. Methods: From December 2021 to February 2022, 494 clinical nurses from 7 general hospitals in Sichuan Province were selected for the study using convenience sampling. The General Information Questionnaire, the Compassion Fatigue Short Scale, the Work Engagement Short Scale and the Psychological Capital Questionnaire for Nurses were used to conduct the survey. Pearson correlation was used to analyze the correlation between compassion fatigue, work engagement and psychological capital. And stepwise regression analysis and Bootstrap method were used to analyze the effects of compassion fatigue and psychological capital on work engagement as well as the mediating effect of psychological capital between compassion fatigue and work engagement. Results: Of the 494 clinical nurses, 33 (6.7%) were male and 461 (93.3%) were female, with an average age of (31.47±6.89) years old and an average working years (9.87±7.61) years. The average scores of psychological capital, compassion fatigue and work engagement of clinical nurses were (5.01±0.76), (3.19±2.08) and (4.60±1.37) points, respectively. Compassion fatigue was negatively correlated with psychological capital and work engagement (r=-0.608, -0.580, P<0.001), and work engagement was positively correlated with psychological capital (r=0.771, P<0.001). Compassion fatigue and psychological capital together accounted for 61.3% of the variation in work engagement, with the direct effects on work engagement were -0.206 (95%CI: -0.283--0.138, P<0.001) and 0.677 (95%CI: 0.599-0.744, P=0.001), respectively. Psychological capital partially mediated the relationship between compassion fatigue and work engagement, with a mediating effect of -0.397 (95%CI: -0.456--0.340, P<0.001), accounting for 65.8% of the total effect. Conclusion: The work engagement of clinical nurses is at a high level. Managers should take targeted measures to alleviate the symptoms of clinical nurses' compassion fatigue, improve their psychological capital, and then stabilize and improve their level of work engagement.
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Affiliation(s)
- H He
- School of Nursing, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - J L Wang
- School of Nursing, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - M Jin
- Operating Room, The Third People's Hospital of Chengdu, Chengdu 610014, China
| | - Z Q Yuan
- Department of Nursing, Sichuan Nursing Vocational College, Deyang 618099, China
| | - M Teng
- School of Nursing, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
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Ran X, Zhang X, Teng M, Alawi WB, Nahum S, He H, Lok BH. The Effect of PARP Inhibitor Radiosensitization on the mRNA Translational Regulation of T Cell Chemokines. Int J Radiat Oncol Biol Phys 2023; 117:S71-S72. [PMID: 37784561 DOI: 10.1016/j.ijrobp.2023.06.380] [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) Immunotherapy has modestly improved survival for small cell lung cancer (SCLC) patients. Low response rate and rapid disease progression remain an intractable challenge. One of the factors that contribute to immunotherapy resistance is the lack of cytotoxic T cell infiltration. The expression of chemoattractant cytokines, like CCL5 and CXCL10, are essential for T cell infiltration. The control of chemokine expression is not fully understood, but both transcriptional and translational control pathways could play a major role. Previous studies have shown a correlation between DNA damage and chemokine expression and that PARP inhibitors (PARPi) are radiosensitizers for SCLC that increases DNA damage. The objectives of this study were to define this potential PARPi immunogenic radiosensitizing relationship. MATERIALS/METHODS We identified doses of olaparib+ radiation treatment (RT) that conferred radiosensitization in SCLC cell-lines by cell viability and/or clonogenic assays. Olaparib+RT induced CCL5 and CXCL10 mRNA expression was measured by qPCR across SCLC cell-lines. Protein level of chemokines was assessed by immunoblotting. SBC5 cells were treated with olaparib+RT and submitted for RNA sequencing analysis. Genes with adjusted p value<0.05 were considered significant. Protein level changes and target gene knock-out (KO) were confirmed by immunoblotting. Chemokine CXCL10 mRNA and protein level in wildtype (WT) and KO cells were measured by qPCR and western blot, respectively. A mRNA decay assay and dual-luciferase reporter assay was used to identify the region of CXCL10 mRNA that confers mRNA stability control. In vivo anti-tumor efficacy and tumor T cell infiltration studies were done in B6129F mice bearing KP1 tumors. And the T cell infiltration was measured by immune profiling. RESULTS In vitro, olaparib+RT significantly increased CXCL10 mRNA in all four SCLC subtype cell-lines in comparison to vehicle control. Consistently, the increase of CXCL10 protein levels (3-fold) was observed in SBC5 cells. By RNA-Seq, a top-ranking translational repressor was EIF4E2 (4EHP) mRNA. The downregulation of EIF4E2 protein by olaparib+RT was validated in four SCLC subtypes by western blot. EIF4E2 KO in HEK293 and SBC5 cells increased CXCL10 mRNA and protein level. By mRNA decay assay and western blot, the absence of EIF4E2 stabilized CXCL10 mRNA and increased CXCL10 protein levels. The dual-luciferase assay demonstrated EIF4E2 destabilizes CXCL10 mRNA via the 3'UTR of CXCL10. In vivo, immune profiling showed olaparib+RT significantly increased the total T cell and CD8+ T cell infiltration. Finally, anti-PD-L1 inhibition potentiated olaparib + IR to improve tumor control in KP1 allograft. CONCLUSION Our study demonstrated olaparib + RT increases CXCL10 protein levels through downregulating EIF4E2 to subsequently increase T cell infiltration. Olaparib + RT enhanced anti-PD-L1 immunotherapy efficacy and has therapeutic potential as an immunogenic radiosensitizer.
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Affiliation(s)
- X Ran
- University Health Network, Toronto, ON, Canada
| | - X Zhang
- Department of Biochemistry, McGill University, Montreal, QC, Canada
| | - M Teng
- University Health Network, Toronto, ON, Canada
| | - W B Alawi
- University Health Network, Toronto, ON, Canada
| | - S Nahum
- Department of Biochemistry, McGill University, Montreal, ON, Canada
| | - H He
- University of Toronto, Toronto, ON, Canada
| | - B H Lok
- Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
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Le Garrec D, Chesnel C, Teng M, Lagnau P, Brouchet M, Chea M, Amarenco G, Hentzen C. [Intermittent catheterization: What are the environmental impacts and how can they be reduced?]. Prog Urol 2023; 33:533-540. [PMID: 37596127 DOI: 10.1016/j.purol.2023.07.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Revised: 07/09/2023] [Accepted: 07/10/2023] [Indexed: 08/20/2023]
Abstract
INTRODUCTION If the use of intermittent catheterization has revolutionized the prognosis of neuro-urology patients, it seems necessary to question the ecological cost of single-use catheters, in a process of decarbonization of the health sector. The aim of this work is to identify the environmental impact of intermittent catheterization and potential solutions to reduce it. METHODS A review of the literature on the environmental impact of intermittent catheterizations was conducted. Potential solutions to reduce this impact and possible alternatives were then studied based on data from the literature. RESULTS Only two studies were identified. The first estimated the amount of waste generated by intermittent catheterization in the USA to be between 4400 and 38,964 tons per year. The second study showed a higher overall environmental impact of thermoplastic polyurethane (TPU) catheters than polyvinyl chloride (PVC) catheters and catheters made from polyolefin material. Reuse of catheters would reduce the amount of waste, but the paucity of data does not allow us to determine if the incidence of urinary tract infection would be affected. Alternative micturition methods, in addition to the complications they may cause, require the use of collection bags or pads, which also have an environmental impact. Other treatments for dysuria exist, but the evidence is limited and does not cover all patient populations. CONCLUSION With limited alternatives, it appears essential to develop more environmentally friendly catheters.
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Affiliation(s)
- D Le Garrec
- GRC 01, GREEN Groupe de recherche clinique en neuro-urologie, AP-HP, hôpital Tenon, Sorbonne Université, 75020 Paris, France.
| | - C Chesnel
- GRC 01, GREEN Groupe de recherche clinique en neuro-urologie, AP-HP, hôpital Tenon, Sorbonne Université, 75020 Paris, France
| | - M Teng
- GRC 01, GREEN Groupe de recherche clinique en neuro-urologie, AP-HP, hôpital Tenon, Sorbonne Université, 75020 Paris, France
| | - P Lagnau
- GRC 01, GREEN Groupe de recherche clinique en neuro-urologie, AP-HP, hôpital Tenon, Sorbonne Université, 75020 Paris, France
| | - M Brouchet
- GRC 01, GREEN Groupe de recherche clinique en neuro-urologie, AP-HP, hôpital Tenon, Sorbonne Université, 75020 Paris, France
| | - M Chea
- GRC 01, GREEN Groupe de recherche clinique en neuro-urologie, AP-HP, hôpital Tenon, Sorbonne Université, 75020 Paris, France
| | - G Amarenco
- GRC 01, GREEN Groupe de recherche clinique en neuro-urologie, AP-HP, hôpital Tenon, Sorbonne Université, 75020 Paris, France
| | - C Hentzen
- GRC 01, GREEN Groupe de recherche clinique en neuro-urologie, AP-HP, hôpital Tenon, Sorbonne Université, 75020 Paris, France
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Ge G, Li G, Zhang Z, Zhu Y, Wang W, Ren L, Li Z, Teng M. A Novel Scoring System in Predicting Prognosis After Adjuvant FOLFOX Chemotherapy in Gastric Cancer. Cancer Biother Radiopharm 2023; 38:388-395. [PMID: 35076265 DOI: 10.1089/cbr.2021.0343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Purpose: To evaluate the impact of neutrophil-to-lymphocyte ratio (NLR) and preoperative prognostic nutritional index (PNI) on prognosis of gastric cancer (GC) after adjuvant FOLFOX chemotherapy. Materials and Methods: Data on 749 GC patients who received operation after by adjuvant FOLFOX chemotherapy between January 2013 and December 2015 were enrolled in this study, retrospectively. Receiver-operating characteristic curve analysis was employed to assess optimal cutoff thresholds for PNI and NLR. The GC subjects having a low PNI (<52.8) and high NLR (>1.79) received a score of 2. Any variable that met these standards was scored as 1. If none of the two variables met these standards of the patient was assigned a score of 0. Correlation between PNI-NLR score and GC stage was also evaluated. Results: The mean overall survival (OS) and 5-year OS rate for subjects with PNI-NLR = 2 was lower than those of subjects with PNI-NLR = 1, or 0 (40.9% vs. 52.1%, 76.4% [46.0 vs. 61.0], 68.0 months, p ≤ 0.001). In multivariate analyses, the PNI-NLR score (p ≤ 0.001) and WHO grade (p ≤ 0.001) showed potential to independently influence OS. Conclusions: High PNI-NLR scores can independently affect worse prognosis of GC. Thus, it can be utilized to differentiate low risk from high risk subjects.
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Affiliation(s)
- Guochao Ge
- Department of Liver Transplantation and Hepatic Surgery, Cheeloo College of Medicine, Shandong University, Shandong Qianfoshan Hospital, Jinan, China
- Department of Gastrointestinal Surgery, the Affiliated Wuhu Hospital of East China Normal University (The People's Second Hospital of Wuhu), Wuhu, China
| | - Guangyao Li
- Department of Gastrointestinal Surgery, the Affiliated Wuhu Hospital of East China Normal University (The People's Second Hospital of Wuhu), Wuhu, China
| | - Zhengjun Zhang
- Department of Gastrointestinal Surgery, the Affiliated Wuhu Hospital of East China Normal University (The People's Second Hospital of Wuhu), Wuhu, China
| | - Yong Zhu
- Department of Gastrointestinal Surgery, Cheeloo College of Medicine, Shandong University, Shandong Provincial Hospital, Jinan, China
| | - Wentao Wang
- Department of Liver Transplantation and Hepatic Surgery, Cheeloo College of Medicine, Shandong University, Shandong Qianfoshan Hospital, Jinan, China
| | - Lei Ren
- Department of Liver Transplantation and Hepatic Surgery, Cheeloo College of Medicine, Shandong University, Shandong Qianfoshan Hospital, Jinan, China
| | - Ziqiang Li
- Department of Liver Transplantation and Hepatic Surgery, Cheeloo College of Medicine, Shandong University, Shandong Qianfoshan Hospital, Jinan, China
| | - Mujian Teng
- Department of Liver Transplantation and Hepatic Surgery, Cheeloo College of Medicine, Shandong University, Shandong Qianfoshan Hospital, Jinan, China
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Ma K, Sun Z, Li X, Guo J, Wang Q, Teng M. Forkhead box M1 recruits FoxP3 + Treg cells to induce immune escape in hilar cholangiocarcinoma. Immun Inflamm Dis 2022; 10:e727. [PMID: 36301031 PMCID: PMC9597491 DOI: 10.1002/iid3.727] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 08/31/2022] [Accepted: 09/13/2022] [Indexed: 11/06/2022] Open
Abstract
Objective Hilar cholangiocarcinoma (HCCA) is a malignancy related to chronic biliary tract inflammation. Tumor immune escape is a necessary process of tumorigenesis. Forkhead box M1 (FoxM1) could affect the progression of various carcinomas. This study attempted to elaborate on the mechanism of FoxM1 in HCCA immune escape. Methods HCCA cell lines were collected to measure the expression of FoxM1 and FoxP3. CD8+ T cells were extracted to establish the co‐culture system with HCCA cells and Treg cells. pcDNA3.1‐FoxM1 or si‐FoxP3 was transfected into HCCA cells in the co‐culture system. HCCA cell viability, mobility, and invasiveness as well as levels of transforming growth factor (TGF)‐β and interleukin (IL)‐6 were evaluated. The binding relation between FoxM1 and FoxP3 promoter was verified. HCCA cells with pcDNA3.1‐FoxM1 were subcutaneously injected into mice to establish the xenograft mouse models. Results FoxM1 and FoxP3 were overexpressed in HCCA cells. The co‐culture of CD8+ T and HCCA cells inhibited HCCA cell activity and Treg cells limited CD8+ T killing. FoxM1 overexpression strengthened the inhibiting role of Treg cells in CD8+ T killing, upregulated TGF‐β and IL‐6 levels, and encouraged HCCA immune escape. FoxM1 bound to the FoxP3 promoter region to promote FoxP3 transcription. Silencing of FoxP3 neutralized the promoting role of FoxM1 overexpression in Treg cell immunosuppression and HCCA cell immune escape. FoxM1 aggravated tumor development, upregulated FoxP3 expression, increased Treg cells, and reduced CD8+ T cells. Conclusion FoxM1 bound to the FoxP3 promoter region to promote FoxP3 transcription and recruited FoxP3+ Treg cells, thereby inducing HCCA immune escape.
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Affiliation(s)
- Kai Ma
- Department of General Surgery, Shandong Qianfoshan Hospital, Cheeloo College of MedicineShandong UniversityJinanShandong ProvinceP.R. China
| | - Zhaowei Sun
- Department of Hepatopancreatobiliary SurgeryThe Affiliated Hospital of Qingdao UniversityQingdaoShandong ProvinceP.R. China
| | - Xueliang Li
- Department of Hepatopancreatobiliary SurgeryThe Affiliated Hospital of Qingdao UniversityQingdaoShandong ProvinceP.R. China
| | - Jingyun Guo
- Department of Hepatopancreatobiliary SurgeryThe Affiliated Hospital of Qingdao UniversityQingdaoShandong ProvinceP.R. China
| | - Qinlei Wang
- Department of Hepatopancreatobiliary SurgeryThe Affiliated Hospital of Qingdao UniversityQingdaoShandong ProvinceP.R. China
| | - Mujian Teng
- Department of General Surgery, Shandong Qianfoshan Hospital, Cheeloo College of MedicineShandong UniversityJinanShandong ProvinceP.R. China
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Jin QY, Feng LL, Wang YB, Li P, Yang JF, Teng M, Chai SJ, Xing GX, Zhang GP. Rapid screening of monoclonal antibodies against porcine circovirus type 2 using colloidal gold-based paper test. Pol J Vet Sci 2022; 25:27-34. [PMID: 35575997 DOI: 10.24425/pjvs.2022.140837] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
A proof of concept for using paper test as a suitable method in the production of monoclonal antibodies (MAbs) is reported. The paper test which detects antibodies against porcine circovirus type 2 (PCV2) using colloidal gold-labelled capsid protein as the antigen probe was applied exclusively in the screening of anti-PCV2 MAbs. It allowed the detection of 118 single cell clones within 30 min using naked eyes. MAbs with specific binding to authentic epitopes on the virus were selected using a blocking strategy in which the antibody was pre-incubated with PCV2 viral sample before applying to the test paper. Five hybridomas secreting MAbs against the capsid protein were obtained, with only three of them capable of binding to PCV2. The results were validated and confirmed using enzyme-linked immunosorbent assay and immunofluorescence assay. The paper test is simple, rapid, and independent on professional technicians and proves to be an excellent approach for the screening of MAbs against specific targets.
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Affiliation(s)
- Q Y Jin
- Henan Provincial Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Zhengzhou 450002, PR China
| | - L L Feng
- Institute of Agricultural Economics and Information, Henan Academy of Agricultural Sciences, Zhengzhou 450002, PR China
| | - Y B Wang
- School of Public Health, Xinxiang Medical University, Xinxiang 453003, PR China
| | - P Li
- School of Life Sciences and Basic Medicine, Xinxiang University, Xinxiang 453003, PR China
| | - J F Yang
- Henan Provincial Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Zhengzhou 450002, PR China
| | - M Teng
- Henan Provincial Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Zhengzhou 450002, PR China
| | - S J Chai
- Henan Provincial Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Zhengzhou 450002, PR China
| | - G X Xing
- Henan Provincial Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Zhengzhou 450002, PR China
| | - G P Zhang
- Henan Provincial Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Zhengzhou 450002, PR China
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Xi X, Hu R, Wang Q, Xu K, Yang H, Cui Z, Zhang Y, Teng M, Xia L, Chen J, Liu Y. Interleukin-22 promotes PD-L1 expression via STAT3 in colon cancer cells. Oncol Lett 2021; 22:716. [PMID: 34429756 DOI: 10.3892/ol.2021.12977] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 04/20/2021] [Indexed: 12/30/2022] Open
Abstract
Blocking the expression of programmed cell death ligand 1 (PD-L1) is a promising approach for the treatment of colon cancer. The binding of PD-L1 to its receptor programmed cell death 1 (PD-1) on immune cells leads to the apoptosis of activated T cells and causes immune escape. However, there is a limited number of patients with colon cancer that can benefit from the inhibition of PD-L1, and the regulation of PD-L1 expression is poorly understood in colon cancer. The present study demonstrated that interleukin-22 (IL-22) and PD-L1 were upregulated in colon cancer tissues and there was a positive correlation between IL-22 expression and PD-L1 expression. In the present study, exogenous IL-22 was found to upregulate PD-L1 expression via the signal transducer and activator of transcription 3 signaling pathway in human colon cancer cells (DLD-1 and primary colon cancer cells). The results of the present study revealed a novel regulatory mechanism of PD-L1 expression in colon cancer, which provides a theoretical basis for decreasing the immune tolerance of colon cancer via IL-22 overexpression.
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Affiliation(s)
- Xiangpeng Xi
- Department of General Surgery, The First Affiliated Hospital of Shandong First Medical University, Jinan, Shandong 250014, P.R. China
| | - Rui Hu
- Center for Reproductive Medicine, Central Hospital Affiliated to Shandong First Medical University, Jinan, Shandong 250013, P.R. China
| | - Qi Wang
- Department of Pharmacy, The Fifth People's Hospital of Jinan, Jinan, Shandong 250022, P.R. China
| | - Kang Xu
- Department of General Surgery, The First Affiliated Hospital of Shandong First Medical University, Jinan, Shandong 250014, P.R. China
| | - Hui Yang
- Department of General Surgery, The First Affiliated Hospital of Shandong First Medical University, Jinan, Shandong 250014, P.R. China
| | - Zhonghui Cui
- Department of General Surgery, The First Affiliated Hospital of Shandong First Medical University, Jinan, Shandong 250014, P.R. China
| | - Yongbo Zhang
- Department of General Surgery, The First Affiliated Hospital of Shandong First Medical University, Jinan, Shandong 250014, P.R. China
| | - Mujian Teng
- Department of General Surgery, The First Affiliated Hospital of Shandong First Medical University, Jinan, Shandong 250014, P.R. China
| | - Lijian Xia
- Department of General Surgery, The First Affiliated Hospital of Shandong First Medical University, Jinan, Shandong 250014, P.R. China
| | - Jingbo Chen
- Department of General Surgery, The First Affiliated Hospital of Shandong First Medical University, Jinan, Shandong 250014, P.R. China
| | - Yulin Liu
- Department of General Surgery, The First Affiliated Hospital of Shandong First Medical University, Jinan, Shandong 250014, P.R. China
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Xi X, Teng M, Zhang L, Xia L, Chen J, Cui Z. MicroRNA-204-3p represses colon cancer cells proliferation, migration, and invasion by targeting HMGA2. J Cell Physiol 2019; 235:1330-1338. [PMID: 31286521 DOI: 10.1002/jcp.29050] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 06/14/2019] [Indexed: 11/09/2022]
Abstract
Colon cancer is a detrimental neoplasm of the digestive tract. MicroRNAs (miRNAs) as central regulators have been discovered in colon cancer. Nonetheless, the impact of miR-204-3p on colon cancer remains indistinct. The research attempted to uncover the impacts of miR-204-3p on colon cancer cells growth, migration, and invasion. miR-204-3p expression level in colon cancer tissues and diverse colon cancer cell lines were testified by the quantitative real-time polymerase chain reaction. Exploration of the impacts of miR-204-3p on cell growth, migration, invasion, and their associated factors through assessment of CCK-8, flow cytometry, Transwell, and western blot, respectively. High mobility group AT-hook 2 (HMGA2) expression was then detected in Caco-2 cells after miR-204-3p mimic and inhibitor transfection, additionally dual-luciferase activity was implemented to further uncover the correlation between HMGA2 and miR-204-3p. The impact of HMGA2 on Caco-2 cell growth, migration, and invasion was finally assessed. We found that repression of miR-204-3p was discovered in colon cancer tissues and HCT116, SW480, Caco-2, HT29 and SW620 cell lines. MiR-204-3p overexpression mitigated Coca-2 cell viability, facilitated apoptosis, simultaneously adjusted CyclinD1 and cleaved caspase-3 expression. Cell migration, invasion, and the associated factors were all suppressed by miR-204-3p overexpression. Reduction of HMGA2 was presented in Caco-2 cells with miR-204-3p mimic transfection, and HMGA2 was predicated to be a target gene of miR-204-3p. Besides, HMGA2 silence showed the inhibitory effect on Caco-2 cells growth, migration, and invasion. In conclusion, miR-204-3p repressed colon cancer cell growth, migration, and invasion through targeting HMGA2.
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Affiliation(s)
- Xiangpeng Xi
- General Surgery Center, Shandong Provincial Qianfoshan Hospital Affiliated to Shandong University, Jinan, China
| | - Mujian Teng
- General Surgery Center, Shandong Provincial Qianfoshan Hospital Affiliated to Shandong University, Jinan, China
| | - Liang Zhang
- Department of Gastrointestinal Surgery, Jinan Zhangqiu District Hospital of TCM, Jinan, China
| | - Lijian Xia
- Department of Gastrointestinal Surgery, Shandong Provincial Qianfoshan Hospital Affiliated to Shandong University, Jinan, China
| | - Jingbo Chen
- Department of Gastrointestinal Surgery, Shandong Provincial Qianfoshan Hospital Affiliated to Shandong University, Jinan, China
| | - Zhonghui Cui
- Department of Gastrointestinal Surgery, Shandong Provincial Qianfoshan Hospital Affiliated to Shandong University, Jinan, China
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Miget G, Moutounaick M, Kervinio F, Teng M, Chesnel C, Charlanes A, Le Breton F, Amarenco G. [Absorbent products for urinary incontinence management]. Prog Urol 2018; 28:953-961. [PMID: 30361139 DOI: 10.1016/j.purol.2018.08.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Revised: 07/27/2018] [Accepted: 08/30/2018] [Indexed: 11/25/2022]
Abstract
INTRODUCTION Despite therapeutic strategies of female and male urinary incontinence (UI) are currently well defined, there is no precise indication of the real place or strategy use of absorbent products regardless of the etiology of the incontinence or the clinical context. METHODS We performed a research from the PubMed database using the following keywords: (urinary incontinence [MESH Terms]) AND absorbent pad [MeSH Terms]; allowing us to isolate 362 articles. RESULTS Many protections designs are available over-the-counter without prescription and without reimbursement in France. For "light UI", disposable insert pads are the design that seems to be the most suitable for women, compared to disposable menstrual pads, OR=0.27 [0.14, 0.52], washable pants with integral pad OR=0.12 [0.06, 0.26] or washable insert pads OR=0.05 [0.02, 0.26]. For moderate to severe UI, there is no "best universal product". There are differences between the gender and the use of a panel of protections seems the most appropriate. Both women and men prefer pull-ups to disposable insert pads, OR=0.41 [0.20, 0.87] and OR=0.39 [0.22, 0.68] respectively. In men, a preference in 70 % of subjects for urisheats is observed compared to the protections they usually use (P=0.02). The use of protections improves independence in daily OR activities=0.102 [0.046, 0.158] and quality of life related to UI OR=4.40 [1.74, 7.07] compared to patients not using protections. Despite this, their use must remain cautious because of the potential infectious urinary complications, more frequent in particular in institutional people, with 41 % of users developing at least one urinary infection over an evaluation period of 12 months vs. 11 % of non-users (P=0.001), or immuno-allergic with the "dermatitis associated incontinence" whose prevalence can reach a rate of 50 %. CONCLUSION Comparative analyzes of risk-benefit, economic costs, patient satisfaction, protections vs. other measures are lacking. It is necessary to continue the development of these products and to compare more precisely their intrinsic characteristics, to best support patients choices.
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Affiliation(s)
- G Miget
- GRC 01, GREEN - Groupe de recherche clinique en neuro-urologie, hôpital Tenon, Sorbonne universités, AP-HP, 75020 Paris, France; Service de neuro-urologie et explorations périnéales, hôpital Tenon, AP-HP, 75020 Paris, France.
| | - M Moutounaick
- GRC 01, GREEN - Groupe de recherche clinique en neuro-urologie, hôpital Tenon, Sorbonne universités, AP-HP, 75020 Paris, France; Service de neuro-urologie et explorations périnéales, hôpital Tenon, AP-HP, 75020 Paris, France
| | - F Kervinio
- GRC 01, GREEN - Groupe de recherche clinique en neuro-urologie, hôpital Tenon, Sorbonne universités, AP-HP, 75020 Paris, France; Service de neuro-urologie et explorations périnéales, hôpital Tenon, AP-HP, 75020 Paris, France
| | - M Teng
- GRC 01, GREEN - Groupe de recherche clinique en neuro-urologie, hôpital Tenon, Sorbonne universités, AP-HP, 75020 Paris, France; Service de neuro-urologie et explorations périnéales, hôpital Tenon, AP-HP, 75020 Paris, France
| | - C Chesnel
- GRC 01, GREEN - Groupe de recherche clinique en neuro-urologie, hôpital Tenon, Sorbonne universités, AP-HP, 75020 Paris, France; Service de neuro-urologie et explorations périnéales, hôpital Tenon, AP-HP, 75020 Paris, France
| | - A Charlanes
- GRC 01, GREEN - Groupe de recherche clinique en neuro-urologie, hôpital Tenon, Sorbonne universités, AP-HP, 75020 Paris, France; Service de neuro-urologie et explorations périnéales, hôpital Tenon, AP-HP, 75020 Paris, France
| | - F Le Breton
- GRC 01, GREEN - Groupe de recherche clinique en neuro-urologie, hôpital Tenon, Sorbonne universités, AP-HP, 75020 Paris, France; Service de neuro-urologie et explorations périnéales, hôpital Tenon, AP-HP, 75020 Paris, France
| | - G Amarenco
- GRC 01, GREEN - Groupe de recherche clinique en neuro-urologie, hôpital Tenon, Sorbonne universités, AP-HP, 75020 Paris, France; Service de neuro-urologie et explorations périnéales, hôpital Tenon, AP-HP, 75020 Paris, France
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Ma Q, Liu J, Wu G, Teng M, Wang S, Cui M, Li Y. Co-expression of LAG3 and TIM3 identifies a potent Treg population that suppresses macrophage functions in colorectal cancer patients. Clin Exp Pharmacol Physiol 2018; 45:1002-1009. [PMID: 29905955 DOI: 10.1111/1440-1681.12992] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 05/25/2018] [Accepted: 06/11/2018] [Indexed: 12/13/2022]
Abstract
Regulatory T (Treg) cells are critical suppressors of inflammation and are thought to exert mainly deleterious effects in cancers. In colorectal cancer (CRC), Foxp3+ Treg accumulation in tumors was associated with poor prognosis. Hence, we examined the circulating Treg cells in CRC patients. Compared to controls, CRC patients presented mild upregulations in CD4+ CD25+/hi T cells and in the more canonical CD4+ CD25+/hi Foxp3+ Treg cells in peripheral blood mononuclear cells. Both of these Treg populations could be roughly divided into lymphocyte activation gene 3 negative T cell immunoglobulin and mucin-domain containing-3 negative (LAG3- TIM3- ) and LAG3+ TIM3+ subsets. In CRC patients, the LAG3+ TIM3+ subset represented approximately half of CD4+ CD25+/hi T cells and greater than 60% of CD4+ CD25+/hi Foxp3+ Treg cells, which was significantly more frequent than in healthy controls. Compared to the LAG3- TIM3- CD4+ CD25+/hi T cells, the LAG3+ TIM3+ CD4+ CD25+/hi T cells presented considerably higher transforming growth factor-β and slightly higher interleukin (IL)-10 secretion, together with higher cytotoxic T-lymphocyte associated protein 4 and Foxp3 expression levels. Notably, macrophages following incubation with LAG3- TIM3- CD4+ CD25+/hi T cells and LAG3+ TIM3+ CD4+ CD25+/hi T cells displayed different characteristics. Macrophages incubated with LAG3+ TIM3+ CD4+ CD25+/hi T cells presented lower expression of major histocompatibility complex class II, CD80, CD86, and tumor necrosis factor-α but higher expression of IL-10, than macrophages incubated with LAG3- TIM3- CD4+ CD25+/hi T cells. Together, our investigations demonstrated that CRC patients presented an enrichment of circulating Treg cells, in which the LAG3+ TIM3+ subset exhibited more potent expression of inhibitory molecules, and furthermore, the LAG3+ TIM3+ Treg cells could suppress the proinflammatory activation of macrophages more potently than the LAG3- TIM3- Treg cells.
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Affiliation(s)
- Qiang Ma
- Department of Surgery, Shandong Qianfoshan Hospital, Shandong University, Jinan, Shandong, China
| | - Junning Liu
- Department of Surgery, Shandong Qianfoshan Hospital, Shandong University, Jinan, Shandong, China
| | - Guoliang Wu
- Department of Surgery, Shandong Qianfoshan Hospital, Shandong University, Jinan, Shandong, China
| | - Mujian Teng
- Department of Surgery, Shandong Qianfoshan Hospital, Shandong University, Jinan, Shandong, China
| | - Shaoxuan Wang
- Department of Gastroenterology, Jining First People's Hospital, Jining, Shandong, China
| | - Meng Cui
- Department of Surgery, Shandong Qianfoshan Hospital, Shandong University, Jinan, Shandong, China
| | - Yuantao Li
- Department of Surgery, Shandong Qianfoshan Hospital, Shandong University, Jinan, Shandong, China
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Moutounaïck M, Miget G, Teng M, Kervinio F, Chesnel C, Charlanes A, Le Breton F, Amarenco G. [Coital incontinence]. Prog Urol 2018; 28:515-522. [PMID: 29866492 DOI: 10.1016/j.purol.2018.05.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 05/10/2018] [Accepted: 05/11/2018] [Indexed: 10/14/2022]
Abstract
INTRODUCTION Urinary incontinence may seriously impact quality of life, self-image and subsequently the sexual life. Beside this fact, urinary leakage can specifically occur during sexual intercourse, formally named coital incontinence, and thus lead to specific alteration of the sexual life. AIM To analyse the prevalence, pathophysiological mechanisms and possible therapeutic options for coital urinary incontinence. METHODS Related terms to urinary incontinence and sexual dysfunction were search on PubMed database. RESULTS Whereas at least a quarter of incontinent women have a coital incontinence, this symptom was rarely spontaneously reported. Some women had only coital incontinence (7.6 to 20% of cases). In men, urinary incontinence during sexual intercourse was mainly observed after prostatectomy in 20 to 64% of cases. Coital incontinence requires precise assessment. Indeed, it can occur whatever the phase of coitus: local stimulation (20-30%), excitement (13-18%), penetration (62.9-68%), movements back and forth, orgasm (27-37.1%). Cervico-urethral hypermobility, sphincter incompetence, urethral instability, detrusor overactivity could be the principal physiopathological mechanisms. In men, the main cause was a stress incontinence secondary to sphincter deficiency. Specific therapeutic strategies have proved their effectiveness. The rehabilitative approach (RR=0.25, CI [0.06-1.01]), medicinal (anticholinergic were effective in 59% of cases) or surgical therapeutic (slings with an efficiency of 87%) was proposed to patients. CONCLUSION Coital incontinence is a common and troublesome symptom. Its precise assessment may suggest a specific mechanism and thus a specific treatment.
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Affiliation(s)
- M Moutounaïck
- Groupe de recherche clinique en neuro-urologie (GREEN), GRC 01, Sorbonne universités, 75006 Paris, France; Service de neuro-urologie et d'explorations périnéales, hôpital Tenon, AP-HP, 75020 Paris, France.
| | - G Miget
- Groupe de recherche clinique en neuro-urologie (GREEN), GRC 01, Sorbonne universités, 75006 Paris, France; Service de neuro-urologie et d'explorations périnéales, hôpital Tenon, AP-HP, 75020 Paris, France
| | - M Teng
- Groupe de recherche clinique en neuro-urologie (GREEN), GRC 01, Sorbonne universités, 75006 Paris, France; Service de neuro-urologie et d'explorations périnéales, hôpital Tenon, AP-HP, 75020 Paris, France
| | - F Kervinio
- Groupe de recherche clinique en neuro-urologie (GREEN), GRC 01, Sorbonne universités, 75006 Paris, France; Service de neuro-urologie et d'explorations périnéales, hôpital Tenon, AP-HP, 75020 Paris, France
| | - C Chesnel
- Groupe de recherche clinique en neuro-urologie (GREEN), GRC 01, Sorbonne universités, 75006 Paris, France; Service de neuro-urologie et d'explorations périnéales, hôpital Tenon, AP-HP, 75020 Paris, France
| | - A Charlanes
- Groupe de recherche clinique en neuro-urologie (GREEN), GRC 01, Sorbonne universités, 75006 Paris, France; Service de neuro-urologie et d'explorations périnéales, hôpital Tenon, AP-HP, 75020 Paris, France
| | - F Le Breton
- Groupe de recherche clinique en neuro-urologie (GREEN), GRC 01, Sorbonne universités, 75006 Paris, France; Service de neuro-urologie et d'explorations périnéales, hôpital Tenon, AP-HP, 75020 Paris, France
| | - G Amarenco
- Groupe de recherche clinique en neuro-urologie (GREEN), GRC 01, Sorbonne universités, 75006 Paris, France; Service de neuro-urologie et d'explorations périnéales, hôpital Tenon, AP-HP, 75020 Paris, France
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Wang WT, Li Z, Shi M, Zhu H, Xiong X, Shang J, Liu J, Teng M, Yang M. Association of the GLB1 rs4678680 genetic variant with risk of HBV-related hepatocellular carcinoma. Oncotarget 2018; 7:56501-56507. [PMID: 27489354 PMCID: PMC5302931 DOI: 10.18632/oncotarget.10963] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Accepted: 07/19/2016] [Indexed: 01/22/2023] Open
Abstract
Accumulated evidences demonstrated that GLB1 is involved in cell senescence and cancer development. The GLB1 rs4678680 single nucleotide polymorphism (SNP) has been identified as a hepatocellular carcinoma (HCC) susceptibility polymorphism by a genome-wide association study in Korean population previously. However, little or nothing was known about its involvement and functional significance in hepatitis B viruses (HBV)-related HCC in Chinese. Therefore, we investigated the association between the GLB1 rs4678680 SNP and HBV-related HCC risk as well as its biological function in vivo. Genotypes were determined in two independent case-control sets from two medical centers of China. Odds ratios (ORs) and 95% confidence intervals (CIs) were estimated by logistic regression. The potential regulation role the rs4678680 genetic variant on GLB1 expression was examined with HCC and normal liver tissues. We found that The rs4678680 G allele was showed to be risk allele; individuals with the TG genotype had an OR of 1.51 (95% CI = 1.10–2.07, P = 0.010, Shandong set) or 1.49 (95% CI = 1.11–1.99, P = 0.008, Jiangsu set) for developing HBV-related HCC, respectively, compared with individuals with the TT genotype. This association was more pronounced in males, individuals aged older than 57 years and drinkers (all P < 0.05). In the genotype-phenotype correlation analyses of fifty-six human liver tissue samples, rs4678680 TG or GG was associated with a statistically significant increase of GLB1 mRNA expression (P < 0.05). Our data indicated that the GLB1 rs4678680 SNP contributes to susceptibility to develop HBV-related HCC, highlighting the involvement of GLB1 and cell senescence in etiology of HCC.
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Affiliation(s)
- Wen-Tao Wang
- Department of Hepatobiliary Surgery, Qianfoshan Hospital, Shandong University, Jinan, Shandong Province, China
| | - Ziqiang Li
- Department of Hepatobiliary Surgery, Qianfoshan Hospital, Shandong University, Jinan, Shandong Province, China
| | - Meng Shi
- Shandong Provincial Key Laboratory of Radiation Oncology, Cancer Research Center, Shandong Cancer Hospital Affiliated to Shandong University, Shandong Academy of Medical Sciences, Jinan, Shandong Province, China.,College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, China
| | - Hui Zhu
- Department of Radiation Oncology, Shandong Cancer Hospital Affiliated to Shandong University, Shandong Academy of Medical Sciences, Jinan, Shandong Province, China
| | - Xiangyu Xiong
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, China
| | - Jinhua Shang
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, China
| | - Jibing Liu
- Department of Intervention Surgery, Shandong Cancer Hospital Affiliated to Shandong University, Shandong Academy of Medical Sciences, Jinan, Shandong Province, China
| | - Mujian Teng
- Department of Hepatobiliary Surgery, Qianfoshan Hospital, Shandong University, Jinan, Shandong Province, China
| | - Ming Yang
- Shandong Provincial Key Laboratory of Radiation Oncology, Cancer Research Center, Shandong Cancer Hospital Affiliated to Shandong University, Shandong Academy of Medical Sciences, Jinan, Shandong Province, China
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Li X, Teng M, Wang J. F-021IS ADJUVANT CHEMOTHERAPY HELPFUL OR HARMFUL IN R0 RESECTED STAGE IB NON-SMALL CELL LUNG CANCER? Interact Cardiovasc Thorac Surg 2017. [DOI: 10.1093/icvts/ivx280.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Lin H, Yang B, Teng M. T-cell immunoglobulin mucin-3 as a potential inducer of the epithelial-mesenchymal transition in hepatocellular carcinoma. Oncol Lett 2017; 14:5899-5905. [PMID: 29113224 PMCID: PMC5661575 DOI: 10.3892/ol.2017.6961] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Accepted: 04/26/2017] [Indexed: 12/13/2022] Open
Abstract
T-cell immunoglobulin mucin (TIM)-3 is an important member of the TIM gene family, which was thought to contribute to the progression of numerous types of cancer, including hepatocellular carcinoma (HCC); however, the mechanism underlying TIM-3 functions in HCC progression has not yet been extensively investigated. The present study aimed to investigate the function of TIM-3 in the metastasis of HCC and to determine whether the alteration of TIM-3 expression levels regulated the epithelial-mesenchymal transition (EMT) occurrence of HCC, using epithelial (E)-cadherin, neuronal (N)-cadherin, matrix metallopeptidase-9 (MMP-9), Twist 1, Slug, Snail, and Smad as EMT biomarkers. The results demonstrated that upregulation of TIM-3 using TIM-3 lentiviral activation particles (5 µl) increased cell migration and invasion, which was decreased in TIM-3 short interfering RNA-infected cells (10 µM, 3 µl) correspondingly. SMMC-7721 HCC cells were used as the control. EMT was aggravated in TIM-3 upregulated SMMC-7721 cells, which was attenuated in the TIM-3 interference group, accompanied by an alteration of E-cadherin, N-cadherin, MMP-9, Twist 1, Slug, Snail and Smad expression levels. The data presented suggests that TIM-3 serves an essential role in the metastasis of HCC, the mechanism of which was associated with EMT occurrence. Interference of TIM-3 is expected to be an effective means to prevent and control EMT, and further the metastasis of HCC.
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Affiliation(s)
- Huapeng Lin
- Department of Hepatobiliary Surgery, Qianfoshan Hospital Affiliated to Shandong University, Jinan, Shandong 250014, P.R. China.,Department of Hepatobiliary Surgery, Jining No. 1 People's Hospital, Jining, Shandong 272001, P.R. China
| | - Bin Yang
- Department of Hepatobiliary and Vascular Surgery, Jining No. 1 People's Hospital, Jining, Shandong 272001, P.R. China
| | - Mujian Teng
- Department of Hepatobiliary Surgery, Qianfoshan Hospital Affiliated to Shandong University, Jinan, Shandong 250014, P.R. China
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Han X, Wang X, Zhao B, Chen G, Sheng Y, Wang W, Teng M. MicroRNA-187 inhibits tumor growth and metastasis via targeting of IGF-1R in hepatocellular carcinoma. Mol Med Rep 2017. [PMID: 28627639 DOI: 10.3892/mmr.2017.6788] [Citation(s) in RCA: 10] [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: 12/14/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is the primary and most frequently occurring type of malignant liver cancer, accounting for 70-85% of total liver cancer cases worldwide. It has previously been demonstrated that the aberrant expression of microRNAs (miR) contributes to carcinogenesis and progression of various human malignancies, including HCC. However, mechanisms underlying the differential expression and specific roles of miR‑187 in HCC remain to be elucidated, particularly regarding how the modulation of malignant phenotypes in HCC cells occurs. The present study demonstrated that miR‑187 was significantly downregulated in HCC tissues and cell lines. Restoration of miR‑187 expression inhibited cell proliferation, migration and invasion in HCC. Furthermore, insulin‑like growth factor 1 receptor (IGF‑1R) was demonstrated to act as a direct target gene of miR‑187 in HCC. IGF‑1R knockdown mimicked the effects of miR‑187 overexpression in HCC, resulting in a significant inhibition of cell proliferation, migration and invasion. The results of the present study demonstrated that miR‑187 acted as a tumor suppressor in HCC progression via direct targeting of IGF‑1R. miR‑187 may therefore exhibit the potential to act as a novel and therapeutic target for HCC treatment in the future.
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Affiliation(s)
- Xinqiang Han
- Department of Interventional Medicine and Vascular Surgery, The Affiliated Hospital of Binzhou Medical University, Binzhou, Shandong 256603, P.R. China
| | - Xuemin Wang
- Department of Gastroenterology, The Affiliated Hospital of Binzhou Medical University, Binzhou, Shandong 256603, P.R. China
| | - Baolei Zhao
- Department of Hepatobiliary Surgery, The Affiliated Hospital of Binzhou Medical University, Binzhou, Shandong 256603, P.R. China
| | - Gang Chen
- Department of Interventional Medicine and Vascular Surgery, The Affiliated Hospital of Binzhou Medical University, Binzhou, Shandong 256603, P.R. China
| | - Yuguo Sheng
- Department of Interventional Medicine and Vascular Surgery, The Affiliated Hospital of Binzhou Medical University, Binzhou, Shandong 256603, P.R. China
| | - Wenming Wang
- Department of Interventional Medicine and Vascular Surgery, The Affiliated Hospital of Binzhou Medical University, Binzhou, Shandong 256603, P.R. China
| | - Mujian Teng
- Department of Hepatobiliary Surgery, Qianfoshan Hospital Affiliated to Shandong University, Jinan, Shandong 250014, P.R. China
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Ren L, Teng M, Zhang T, Zhang X, Sun B, Qin S, Zhong L, Peng Z, Fan J. Donors FMO3 polymorphisms affect tacrolimus elimination in Chinese liver transplant patients. Pharmacogenomics 2017; 18:265-275. [PMID: 28084894 DOI: 10.2217/pgs-2016-0098] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
AIM Flavin-containing monooxygenase (FMO) variants were potentially involved in tacrolimus metabolism in kidney transplantion. The influences of FMO3 genotypes on tacrolimus elimination in Chinese liver transplant patients remained unclear. PATIENTS & METHODS FMO3 SNPs and CYP3A5 rs776746 were analyzed in 110 Chinese patients. RESULTS Donor FMO3 rs1800822 allele T and rs909530 allele T were associated with fast tacrolimus elimination. Combination of polymorphisms of donor FMO3 rs1800822 and rs909530 genotype impacted on tacrolimus elimination (p = 0.0221). The number of donor rs1800822 allele T and rs909530 allele T was confirmed to be an independent predictor of the tacrolimus concentration-to-dose ratios for weeks 2, 3 and 4 in the multivariate analysis. CONCLUSION Donor's FMO3 polymorphisms might affect tacrolimus elimination.
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Affiliation(s)
- Lei Ren
- Department of Hepatobiliary Pancreatic Surgery, Shandong Qianfoshan Hospital, Shandong University, Jinan 250014, China
| | - Mujian Teng
- Department of Hepatobiliary Pancreatic Surgery, Shandong Qianfoshan Hospital, Shandong University, Jinan 250014, China
| | - Tao Zhang
- Department of Hepatobiliary Pancreatic Surgery, Shanghai First People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200080, China
| | - Xiaoqing Zhang
- Department of Pharmacy, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
| | - Bo Sun
- Department of Pharmacy, Shanghai First People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200080, China
| | - Shengying Qin
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental & Neuropsychiatric Disorders (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200030, China
| | - Lin Zhong
- Department of Hepatobiliary Pancreatic Surgery, Shanghai First People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200080, China
| | - Zhihai Peng
- Department of Hepatobiliary Pancreatic Surgery, Shanghai First People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200080, China
| | - Junwei Fan
- Department of Hepatobiliary Pancreatic Surgery, Shanghai First People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200080, China
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Dave E, Ozbek U, Gupta V, Genden E, Miles B, Teng M, Demicco E, Posner M, Misiukiewicz K, Bakst R. Patterns of Failure in Human Papillomavirus (HPV)-Positive Versus HPV-Negative Oropharyngeal Cancer. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2015.12.240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Kass J, Pool C, Teng M, Miles B, Genden E. Initial Experience Using Transoral Robotic Surgery for Advanced-Stage (T3) Tumors of the Head and Neck. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2015.12.106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Khan N, Kass J, Teng M, Miles B, Genden E. Transoral Robotic-Assisted Resection Approach for Identifying Unknown Primaries of the Head and Neck. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2015.12.092] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Teng M, Khoo AL, Zhao YJ, Lin L, Lim BP, Wu TS, Dan YY. Meta-analysis of the effectiveness of esomeprazole in gastroesophageal reflux disease and Helicobacter pylori infection. J Clin Pharm Ther 2015; 40:368-75. [PMID: 25893507 DOI: 10.1111/jcpt.12277] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Accepted: 03/24/2015] [Indexed: 12/14/2022]
Abstract
WHAT IS KNOWN AND OBJECTIVE Proton pump inhibitors (PPIs) are one of the most widely used classes of drugs. However, the quantum clinical benefit of newer and more expensive PPIs over the older generation PPIs remains uncertain. This meta-analysis sought to assess the clinical and safety profiles of esomeprazole versus omeprazole at pharmacologically equivalent doses in healing gastroesophageal reflux disease (GERD), peptic ulcer disease and eradicating Helicobacter pylori (H. pylori) infection. METHODS PubMed and the Cochrane Library were searched for randomized controlled trials comparing esomeprazole with omeprazole at all doses up to February 2015. Trials were assessed by two reviewers for eligibility according to predefined study inclusion criteria. Meta-analysis was conducted using a random effects model, and heterogeneity in the estimated effects was investigated using meta-regression. Sensitivity analysis was performed to test the robustness of the findings. RESULTS AND DISCUSSION Fifteen trials were included and none of which compared esomeprazole with omeprazole in peptic ulcer disease. The included studies had not evaluated esomeprazole 20 mg versus omeprazole 40 mg. In GERD, esomeprazole 40 mg (relative risk (RR) = 1·07; 95% confidence interval (CI) 1·02 to 1·12) and 20 mg (RR=1·04; 95% CI 1·01 to 1·08) significantly improved esophagitis healing when compared with omeprazole 20 mg at week 8. The corresponding numbers needed to treat were 17 and 30, respectively. No significant difference was observed between esomeprazole 20 mg and omeprazole 20 mg at week 4. In H. pylori eradication, there was no difference in the treatment effects between esomeprazole 20 mg and omeprazole 20 mg (RR = 1·01;95% CI 0·96 to 1·05). Their safety profiles were comparable. WHAT IS NEW AND CONCLUSION Esomeprazole demonstrated better esophagitis healing rate in patients with GERD than omeprazole at week 8. However, this clinical advantage diminished when both drugs were given at the same doses at week 4. Superiority of esomeprazole was not observed in the H. pylori eradication rates.
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Affiliation(s)
- M Teng
- Pharmacy and Therapeutics Office, Group Corporate Development, National Healthcare Group, Singapore
| | - A L Khoo
- Pharmacy and Therapeutics Office, Group Corporate Development, National Healthcare Group, Singapore
| | - Y J Zhao
- Pharmacy and Therapeutics Office, Group Corporate Development, National Healthcare Group, Singapore
| | - L Lin
- Pharmacy and Therapeutics Office, Group Corporate Development, National Healthcare Group, Singapore
| | - B P Lim
- Pharmacy and Therapeutics Office, Group Corporate Development, National Healthcare Group, Singapore
| | - T S Wu
- Department of Pharmacy, National University Hospital, Singapore
| | - Y Y Dan
- Department of Medicine, National University Hospital, Singapore.,Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
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Li Z, Lin S, Jiang T, Wang J, Lu H, Tang H, Teng M, Fan J. Overexpression of eIF3e is correlated with colon tumor development and poor prognosis. Int J Clin Exp Pathol 2014; 7:6462-6474. [PMID: 25400724 PMCID: PMC4230162] [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] [Received: 08/21/2014] [Accepted: 09/15/2014] [Indexed: 06/04/2023]
Abstract
EIF3e is a component of the eukaryotic translation initiation factor 3 (eIF-3) complexes, which is an essential factor for initiation of protein synthesis in mammalian cells. Translational control plays key roles in the complex mechanism of cancer development and progression. However, the clinical significance of eIF3e in colon cancer remains to be elucidated. We analyzed the eIF3e expression in a tissue microarray (TMA), which contained 173 colon cancer tissues paired with adjacent normal mucosa and lymph node metastasis. The expression of eIF3e was significantly elevated in colon cancer tissues in comparison with those in adjacent normal mucosa (P < 0.001) and lymph node metastasis (P < 0.001). The high expression of eIF3e in colon cancer was significantly correlated with tumor size (P < 0.001), lymph node involvement (P < 0.001), distant metastasis (P < 0.001), clinical stage (P < 0.001), histopathologic classification (P < 0.001), and vessel invasion (P = 0.036). Univariate and multivariate analysis revealed that eIF3e is an independent prognosis factor for overall survival and disease-free survival in colon cancer. Down-regulation of eIF3e in vitro inhibited colon cancer cell proliferation, clonality and promoted cell apoptosis. Taken together, high eIF3e expression may contribute to tumor progression and predict poor prognosis in colon cancer.
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Affiliation(s)
- Zhi Li
- Department of Anorectal Surgery, Qianfoshan Hospital Affiliated to Shandong University16766 Jingshi Road, Jinan 250014, Shandong, China
| | - Shengtao Lin
- Department of General Surgery, Shanghai Jiaotong University Affiliated First People’s Hospital85 Wujin Road, Shanghai 200080, China
| | - Tao Jiang
- Department of Anal-Colorectal Surgery, General Hospital of Ningxia Medical University804 South Shengli Road, Yinchuan 750004, China
| | - Jingtao Wang
- Department of General Surgery, Shanghai Jiaotong University Affiliated First People’s Hospital85 Wujin Road, Shanghai 200080, China
| | - Huijun Lu
- Department of Pathology, Shanghai Jiaotong University Affiliated First People’s Hospital85 Wujin Road, Shanghai 200080, China
| | - Huamei Tang
- Department of Pathology, Shanghai Jiaotong University Affiliated First People’s Hospital85 Wujin Road, Shanghai 200080, China
| | - Mujian Teng
- Department of General Surgery, Qianfoshan Hospital Affiliated to Shandong University16766 Jingshi Road, Jinan 250014, Shandong, China
| | - Junwei Fan
- Department of General Surgery, Shanghai Jiaotong University Affiliated First People’s Hospital85 Wujin Road, Shanghai 200080, China
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Fox R, Berhane S, Teng M, Cox T, Tada T, Toyoda H, Kumada T, Kagebayashi C, Satomura S, Johnson PJ. Biomarker-based prognosis in hepatocellular carcinoma: validation and extension of the BALAD model. Br J Cancer 2014; 110:2090-8. [PMID: 24691419 PMCID: PMC3992496 DOI: 10.1038/bjc.2014.130] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [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] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Revised: 01/16/2014] [Accepted: 01/28/2014] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND The Japanese 'BALAD' model offers the first objective, biomarker-based, tool for assessment of prognosis in hepatocellular carcinoma, but relies on dichotomisation of the constituent data, has not been externally validated, and cannot be applied to the individual patients. METHODS In this Japanese/UK collaboration, we replicated the original BALAD model on a UK cohort and then built a new model, BALAD-2, on the original raw Japanese data using variables in their continuous form. Regression analyses using flexible parametric models with fractional polynomials enabled fitting of appropriate baseline hazard functions and functional form of covariates. The resulting models were validated in the respective cohorts to measure the predictive performance. RESULTS The key prognostic features were confirmed to be Bilirubin and Albumin together with the serological cancer biomarkers, AFP-L3, AFP, and DCP. With appropriate recalibration, the model offered clinically relevant discrimination of prognosis in both the Japanese and UK data sets and accurately predicted patient-level survival. CONCLUSIONS The original BALAD model has been validated in an international setting. The refined BALAD-2 model permits estimation of patient-level survival in UK and Japanese cohorts.
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Affiliation(s)
- R Fox
- Cancer Research UK Clinical Trials Unit, School of Cancer Sciences, University of Birmingham, Birmingham B15 2TT, UK
| | - S Berhane
- Department of Molecular and Clinical Cancer Medicine, University of Liverpool, Liverpool L69 3GA, UK
| | - M Teng
- Department of Oncology, Addenbrooke's Hospital, University of Cambridge, Cambridge CB2 0QQ, UK
| | - T Cox
- Liverpool Cancer Research UK Centre, Liverpool Cancer Trials Unit, University of Liverpool, Liverpool L69 3GL, UK
| | - T Tada
- Department of Gastroenterology and Hepatology, Ogaki Municipal Hospital, Gifu 503-8052, Japan
| | - H Toyoda
- Department of Gastroenterology and Hepatology, Ogaki Municipal Hospital, Gifu 503-8052, Japan
| | - T Kumada
- Department of Gastroenterology and Hepatology, Ogaki Municipal Hospital, Gifu 503-8052, Japan
| | - C Kagebayashi
- Wako Life Sciences, Inc., Mountain View, CA 94043-1829, USA
| | - S Satomura
- Wako Life Sciences, Inc., Mountain View, CA 94043-1829, USA
| | - P J Johnson
- Department of Molecular and Clinical Cancer Medicine, University of Liverpool, Liverpool L69 3GA, UK
- The Clatterbridge Cancer Centre NHS Foundation Trust, Clatterbridge Road, Bebington, Wirral CH63 4JY, UK
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Wang X, Tang H, Teng M, Li Z, Li J, Fan J, Zhong L, Sun X, Xu J, Chen G, Chen D, Wang Z, Xing T, Zhang J, Huang L, Wang S, Peng X, Qin S, Shi Y, Peng Z. Mapping of hepatic expression quantitative trait loci (eQTLs) in a Han Chinese population. J Med Genet 2014; 51:319-26. [PMID: 24665059 PMCID: PMC3995251 DOI: 10.1136/jmedgenet-2013-102045] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Background Elucidating the genetic basis underlying hepatic gene expression variability is of importance to understand the aetiology of the disease and variation in drug metabolism. To date, no genome-wide expression quantitative trait loci (eQTLs) analysis has been conducted in the Han Chinese population, the largest ethnic group in the world. Methods We performed a genome-wide eQTL mapping in a set of Han Chinese liver tissue samples (n=64). The data were then compared with published eQTL data from a Caucasian population. We then performed correlations between these eQTLs with important pharmacogenes, and genome-wide association study (GWAS) identified single nucleotide polymorphisms (SNPs), in particular those identified in the Asian population. Results Our analyses identified 1669 significant eQTLs (false discovery rate (FDR) < 0.05). We found that 41% of Asian eQTLs were also eQTLs in Caucasians at the genome-wide significance level (p=10−8). Both cis- and trans-eQTLs in the Asian population were also more likely to be eQTLs in Caucasians (p<10−4). Enrichment analyses revealed that trait-associated GWAS-SNPs were enriched within the eQTLs identified in our data, so were the GWAS-SNPs specifically identified in Asian populations in a separate analysis (p<0.001 for both). We also found that hepatic expression of very important pharmacogenetic (VIP) genes (n=44) and a manually curated list of major genes involved in pharmacokinetics (n=341) were both more likely to be controlled by eQTLs (p<0.002 for both). Conclusions Our study provided, for the first time, a comprehensive hepatic eQTL analysis in a non-European population, further generating valuable data for characterising the genetic basis of human diseases and pharmacogenetic traits.
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Affiliation(s)
- Xiaoliang Wang
- Department of General Surgery, Shanghai First People's Hospital, Medical College, Shanghai Jiaotong University, Shanghai, China
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Teng M, Pirrie S, Ward DG, Assi LK, Hughes RG, Stocken D, Johnson PJ. Diagnostic and mechanistic implications of serum free light chains, albumin and alpha-fetoprotein in hepatocellular carcinoma. Br J Cancer 2014; 110:2277-82. [PMID: 24603305 PMCID: PMC4007223 DOI: 10.1038/bjc.2014.121] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [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: 10/02/2013] [Revised: 01/15/2014] [Accepted: 02/11/2014] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Mass spectroscopy analysis suggested low serum albumin and high immunoglobulin free light chain (sFLC) levels may have diagnostic value in hepatocellular carcinoma (HCC). Our aims were to apply quantitative assays to confirm these observations, determine their diagnostic utility, and investigate the mechanisms involved. METHODS Albumin, sFLC, routine liver and renal function tests were measured in patients with chronic liver disease with (n=102) and without (n=113) HCC. The discriminant performance was compared with the current standard serological test alpha-fetoprotein (AFP) using receiver operating characteristic (ROC) and area under the curve (AUC) analyses. RESULTS sFLC and serum albumin were each confirmed to have discriminatory utility in HCC with AUC values of 0.7 and 0.8, respectively. sFLC were strongly correlated with gammaglobulin levels and both these were inversely related to serum albumin levels. The discriminatory utility of sFLC was retained after adjusting for renal and liver function. CONCLUSIONS Serum levels of sFLC and albumin were strongly associated with HCC as predicted by mass spectroscopy. Discrimination of HCC by AFP was improved by the addition of either albumin or sFLC. Larger prospective studies are required to determine how AFP, sFLC and albumin might be combined in a useful diagnostic approach for HCC.
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Affiliation(s)
- M Teng
- Cancer Research UK, Institute for Cancer Studies, School of Cancer Sciences, University of Birmingham, Vincent Drive, Edgbaston B15 2TT, UK
| | - S Pirrie
- Cancer Research UK, Institute for Cancer Studies, School of Cancer Sciences, University of Birmingham, Vincent Drive, Edgbaston B15 2TT, UK
| | - D G Ward
- Cancer Research UK, Institute for Cancer Studies, School of Cancer Sciences, University of Birmingham, Vincent Drive, Edgbaston B15 2TT, UK
| | - L K Assi
- The Binding Site Group Limited, 8 Calthorpe Road, Edgbaston B15 1QT, UK
| | - R G Hughes
- The Binding Site Group Limited, 8 Calthorpe Road, Edgbaston B15 1QT, UK
| | - D Stocken
- Cancer Research UK, Institute for Cancer Studies, School of Cancer Sciences, University of Birmingham, Vincent Drive, Edgbaston B15 2TT, UK
| | - P J Johnson
- Cancer Research UK, Institute for Cancer Studies, School of Cancer Sciences, University of Birmingham, Vincent Drive, Edgbaston B15 2TT, UK
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Vempati P, Gupta V, Miles B, Teng M, Genden E, Glick J, Demicco E, Misiukiewicz K, Posner M, Bakst R. Salivary Gland Tumors Treated With Adjuvant Radiation Therapy With or Without Concurrent Chemotherapy. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2013.11.183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Shimwell NJ, Ward DG, Mohri Y, Mohri T, Pallan L, Teng M, Miki YC, Kusunoki M, Tucker O, Wei W, Morse J, Johnson PJ. Macrophage migration inhibitory factor and DJ-1 in gastric cancer: differences between high-incidence and low-incidence areas. Br J Cancer 2012; 107:1595-601. [PMID: 22968650 PMCID: PMC3493758 DOI: 10.1038/bjc.2012.405] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [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] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND There is a need for sensitive and specific blood-borne markers for the detection of gastric cancer. Raised serum macrophage inhibitory factor (MIF) levels have been proposed as a marker for gastric cancer diagnosis but, to date, studies have only encompassed patients from high-incidence areas. METHODS We have compared the serum concentration of MIF in a large cohort of UK and Japanese gastric cancer patients, together with appropriate control subjects (age and gender matched). Carcinoembryonic antigen and H. pylori IgG were also measured, as was DJ-1, a novel candidate protein biomarker identified by analysis of gastric cancer cell line secretomes. RESULTS Marked elevations of the serum concentration of MIF and DJ-1 were seen in Japanese patients with gastric cancer compared with Japanese controls, a trend not seen in the UK cohort. These results could not be accounted for by differences in age, disease stage or H. pylori status. CONCLUSION In regions of high, but not low incidence of gastric cancer, both MIF and DJ-1 have elevated serum concentrations in gastric cancer patients, compared with controls. This suggests that differing mechanisms of disease pathogenesis may be at play in high- and low-incidence regions.
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Affiliation(s)
- N J Shimwell
- Cancer Research UK School of Cancer Sciences, University of Birmingham, Vincent Drive, Edgbaston, Birmingham B15 2TT, UK
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Abstract
Despite the development of novel therapeutic strategies, cardiovascular diseases remain the main cause of morbidity and mortality worldwide. Many phase 1 and 2 clinical trials have reported the safety, feasibility and promising potential of stem cell transplantation, however, the optimal cell types, timing of infusion, cell dosage and routes of administration remain to be determined. This paper reviews the findings of various clinical studies and discusses the challenges facing the delivery of stem cell therapy in cardiovascular diseases.
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Affiliation(s)
- M Teng
- Institute of Burn Research, Southwest Hospital, Third Military Medical University, Chongqing, China
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Wang X, Yan D, Teng M, Fan J, Zhou C, Li D, Qiu G, Sun X, Li T, Xing T, Tang H, Peng X, Peng Z. Reduced expression of PER3 is associated with incidence and development of colon cancer. Ann Surg Oncol 2012; 19:3081-8. [PMID: 22350604 DOI: 10.1245/s10434-012-2279-5] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2011] [Indexed: 12/31/2022]
Abstract
BACKGROUND Period 3 (PER3), a circadian regulation protein, influences cell cycle, growth, and differentiation. The aim of the present study was to determine whether PER3 expression is associated with colon cancer incidence and progression. METHODS PER3 expression was analyzed in the normal and cancerous tissues from patients with colon cancer by establishing a long serial analysis of gene expression (SAGE) database as well as by real-time PCR and immunohistochemistry. RESULTS As compared with normal tissue, a 2.8-fold decrease in PER3 mRNA levels in colon cancerous tissue was observed. Real-time PCR analysis revealed that PER3 mRNA levels in tumor tissues were lower than in normal tissues (P < 0.001) in both patients with colon tumor and those with rectal tumor. In addition, PER3 expression was related to multiple clinicopathologic factors, including tumor location, differentiation, and stage. Furthermore, the incidence of death was higher in subjects with PER3-negative tumors (P = 0.025); the estimated overall survival time was 71.5 ± 2.2 months and 58.6 ± 5.0 months in subjects with PER3-positive and PER3-negative tumors, respectively (P = 0.020). CONCLUSIONS PER3 may play a role in colon cancer progression.
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Affiliation(s)
- Xiaoliang Wang
- Department of General Surgery, Shanghai Jiao Tong University Affiliated First People's Hospital, Shanghai, China
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Sun H, Teng M, Liu J, Jin D, Wu J, Yan D, Fan J, Qin X, Tang H, Peng Z. FOXM1 expression predicts the prognosis in hepatocellular carcinoma patients after orthotopic liver transplantation combined with the Milan criteria. Cancer Lett 2011. [PMID: 21482449 DOI: 10.1016/j.canlet.2011.03.009s0304-3835(11)00158-3] [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] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Molecular biomarker has been proposed to improve patient selection and post-transplant prognostication, but rare achievement has been made. In the present study, Forkhead box M1 (FOXM1) expression and its prognostic role have been investigated in hepatocellular carcinoma (HCC) treated by orthotopic liver transplantation (OLT). We found that the notably higher level of FOXM1 in tumors was associated with malignant pathological features of HCC and unfavorable outcome after OLT. The status of FOXM1 expression combined with the Milan criteria could make the prognostication more accurate and may be of particular interest for expanding the criteria in selecting transplant candidates.
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Affiliation(s)
- Hongcheng Sun
- Department of General Surgery, Affiliated First People's Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai 200080, China
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Sun H, Teng M, Liu J, Jin D, Wu J, Yan D, Fan J, Qin X, Tang H, Peng Z. FOXM1 expression predicts the prognosis in hepatocellular carcinoma patients after orthotopic liver transplantation combined with the Milan criteria. Cancer Lett 2011; 306:214-22. [PMID: 21482449 DOI: 10.1016/j.canlet.2011.03.009] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2011] [Revised: 03/11/2011] [Accepted: 03/11/2011] [Indexed: 01/25/2023]
Abstract
Molecular biomarker has been proposed to improve patient selection and post-transplant prognostication, but rare achievement has been made. In the present study, Forkhead box M1 (FOXM1) expression and its prognostic role have been investigated in hepatocellular carcinoma (HCC) treated by orthotopic liver transplantation (OLT). We found that the notably higher level of FOXM1 in tumors was associated with malignant pathological features of HCC and unfavorable outcome after OLT. The status of FOXM1 expression combined with the Milan criteria could make the prognostication more accurate and may be of particular interest for expanding the criteria in selecting transplant candidates.
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Affiliation(s)
- Hongcheng Sun
- Department of General Surgery, Affiliated First People's Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai 200080, China
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Wong T, San Juan-Vergara H, Cha B, Garay J, Teng M, Mohapatra S. A Novel Fluorescent Labelling Approach to Detect Early Events in RSV-infected Living Cells. J Allergy Clin Immunol 2011. [DOI: 10.1016/j.jaci.2010.12.098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Fan J, Yan D, Teng M, Tang H, Zhou C, Wang X, Li D, Qiu G, Peng Z. Digital Transcript Profile Analysis with aRNA-LongSAGE Validates FERMT1 As a Potential Novel Prognostic Marker for Colon Cancer. Clin Cancer Res 2011; 17:2908-18. [PMID: 21220475 DOI: 10.1158/1078-0432.ccr-10-2552] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Junwei Fan
- Department of General Surgery, Shanghai First People's Hospital, Shanghai Jiaotong University, Shanghai, China
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Kao J, Packer SH, Teng M, Gupta V, Misiukiewicz K, Genden EM. Phase I trial of concurrent erlotinib, celecoxib, and reirradiation for recurrent head and neck cancer. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.5561] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Fan JM, Luo J, Zhang GP, Chen L, Teng M, Yang MF, Wang L, Wang CQ. Identification and characterization of Japanese encephalitis virus envelope protein gene from swine. Lett Appl Microbiol 2010; 51:11-7. [PMID: 20477964 DOI: 10.1111/j.1472-765x.2010.02850.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AIMS Identification and characterization of Japanese encephalitis virus (JEV) envelope protein gene from swine. METHODS AND RESULTS Genomic RNA was separated from JEV isolated strain Henan-09-03, and used as templates for cDNA synthesis of E gene. The cDNA of E gene was amplified by RT-PCR and cloned into the pMD19-T-Vector and confirmed by sequencing. The cloned gene was then subcloned into the pET-32a and was introduced into Escherichia coli BL21 (DE3) for expression. The E protein was purified by Ni chelating column-based affinity chromatography. The molecular weight of expressed protein was about 50 kDa. Compared with the published sequence of SA14 (AF495589), the homology of the nucleotide sequence was 98% and the seven mutations resulting in amino acid substitutions at Leu 36 Ser, Leu107 Val, Ala167 Thr, Asn 230 Ser, Leu 340 Pro, Asn 430 Ile, Phe 448 Leu. Phylogenetic analysis of the E sequence of isolated strain classified it within genotype III of the JEV. The result of Western blotting indicated that the antigenicity of the protein was specific. CONCLUSIONS The stable expression of the protein and the analysis of its antigenic specificity provide the foundation for developing the ELISA early stage diagnosis kit. SIGNIFICANCE AND IMPACT OF THE STUDY As coating antigen, the recombinant E protein served a good source in the indirect ELISA method for the detection of JEV antibody.
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Affiliation(s)
- J-M Fan
- Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Provincial Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Zhengzhou, China
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Dworakowska D, Wlodek E, Leontiou CA, Igreja S, Cakir M, Teng M, Prodromou N, Góth MI, Grozinsky-Glasberg S, Gueorguiev M, Kola B, Korbonits M, Grossman AB. Activation of RAF/MEK/ERK and PI3K/AKT/mTOR pathways in pituitary adenomas and their effects on downstream effectors. Endocr Relat Cancer 2009; 16:1329-38. [PMID: 19620247 DOI: 10.1677/erc-09-0101] [Citation(s) in RCA: 104] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Raf/MEK/ERK and phosphatidylinositol 3-kinase (PI3K)/Akt/mammalian target of rapamycin (mTOR) cascades are key signalling pathways interacting with each other to regulate cell growth and tumourigenesis. We have previously shown B-Raf and Akt overexpression and/or overactivation in pituitary adenomas. The aim of this study is to assess the expression of their downstream components (MEK1/2, ERK1/2, mTOR, TSC2, p70S6K) and effectors (c-MYC and CYCLIN D1). We studied tissue from 16 non-functioning pituitary adenomas (NFPAs), six GH-omas, six prolactinomas and six ACTH-omas, all collected at transsphenoidal surgery; 16 normal autopsy pituitaries were used as controls. The expression of phospho and total protein was assessed with western immunoblotting, and the mRNA expression with quantitative RT-PCR. The expression of pSer217/221 MEK1/2 and pThr183 ERK1/2 (but not total MEK1/2 or ERK1/2) was significantly higher in all tumour subtypes in comparison to normal pituitaries. There was no difference in the expression of phosphorylated/total mTOR, TSC2 or p70S6K between pituitary adenomas and controls. Neither c-MYC phosphorylation at Ser 62 nor total c-MYC was changed in the tumours. However, c-MYC phosphorylation at Thr58/Ser62 (a response target for Akt) was decreased in all tumour types. CYCLIN D1 expression was higher only in NFPAs. The mRNA expression of MEK1, MEK2, ERK1, ERK2, c-MYC and CCND1 was similar in all groups. Our data indicate that in pituitary adenomas both the Raf/MEK/ERK and PI3K/Akt/mTOR pathways are upregulated in their initial cascade, implicating a pro-proliferative signal derangement upstream to their point of convergence. However, we speculate that other processes, such as senescence, attenuate the changes downstream in these benign tumours.
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Affiliation(s)
- D Dworakowska
- Barts and the London School of Medicine, Centre for Endocrinology, London, UK
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Kao J, Policarpio L, Teng M, Burri R, Genden E, Packer S. Phase II trial of concurrent 5-fluorouracil, hydroxyurea, cetuximab, and intensity moduled radiation therapy (IMRT) for locally advanced head and neck cancer. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.6014] [Citation(s) in RCA: 3] [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: 11/20/2022] Open
Abstract
6014 Background: This phase II study was conducted to evaluate the tolerability and efficacy of incorporating cetuximab and simultaneous integrated boost intensity modulated radiation (SIB-IMRT) into a well-described 5-fluorouracil (5-FU) and hydroxyurea (HU)-based chemoradiation regimen. Endpoints included overall survival (OS), locoregional (LRC) and (DC), quality of life and toxicity. Methods: Patients with stage IVa-IVb or high-risk stage III squamous cell carcinomas were enrolled on a phase II trial. Prior organ-conserving surgical therapy or induction chemotherapy was allowed off protocol. SIB-IMRT was prescribed to low (43.2 to 48 Gy) and intermediate (54 to 63 Gy) risk volumes. A separate IMRT conedown plan was targeted to gross disease (72 Gy). The median radiation dose was 72 Gy (range 60 to 72 Gy) administered in 1.5 Gy fractions BID on weeks 1, 3, 5, 7 ± 9. Concurrent systemic therapy consisted of 5-FU (600 mg/m2), HU (500 mg BID) and cetuximab (250 mg/m2). Results: From January 2007 to April 2008, 33 subjects enrolled. Characteristics included 24 males; median age 59; ECOG performance status was 0 in 12. Disease was stage IVa-b disease in 31 (94%), T3–4 in 16 (48%), N2–3 in 23 (70%), and oropharynx primary in 15 (45%). Median follow-up in surviving patients is 15 months (range 6 to 22 months). The 1 year LRC, DC and OS is 91%, 82%, and 92%, respectively. Grade 3 toxicity consisted of mucositis (33%), radiation dermatitis (15%), anemia (15%), and leukopenia (15%), and neutropenia (9%). There were no grade 4–5 events. The majority of patients (64%) were able to tolerate treatment without a feeding tube. Median patient reported University of Washington QOL-R scores before, immediately after, 3 months and 8 months after chemoradiation were 85.5 (±14), 65 (±13), 76.5 (±15), and 84.5 (±9), respectively. Conclusions: Concurrent 5-FU, HU, cetuximab, and SIB-IMRT is a promising and reasonably well tolerated approach to incorporating molecularly targeted therapy in the curative therapy of locally advanced head and neck cancer. [Table: see text]
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Affiliation(s)
- J. Kao
- Mount Sinai School of Medicine, New York, NY
| | | | - M. Teng
- Mount Sinai School of Medicine, New York, NY
| | - R. Burri
- Mount Sinai School of Medicine, New York, NY
| | - E. Genden
- Mount Sinai School of Medicine, New York, NY
| | - S. Packer
- Mount Sinai School of Medicine, New York, NY
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Williams ME, Lacson E, Teng M, Hakim RM, Lazarus JM. Extremes of glycemic control (HbA1c) increase hospitalization risk in diabetic hemodialysis patients in the USA. Am J Nephrol 2009; 29:54-61. [PMID: 18689979 DOI: 10.1159/000151276] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2008] [Accepted: 05/12/2008] [Indexed: 11/19/2022]
Abstract
BACKGROUND/AIMS Because the relation between glycemic control and clinical outcomes found in the general diabetic population has not been established in diabetic hemodialysis patients, we evaluated the association between glycemic control and hospitalization risk. METHODS We performed a primary retrospective data analysis on 23,829 hemodialysis patients with diabetes mellitus. Hemoglobin A(1c) at baseline and hospitalization events over the subsequent 12 months were analyzed and logistic regression models constructed for unadjusted, case mix-adjusted and case mix plus lab- adjusted data. Models were also constructed for cardiovascular, vascular access and sepsis hospitalizations. RESULTS Eighty percent had type 2 DM, 5% type 1 and 14% not specified. The groups had similar mean HbA(1c) levels, 6.8 +/- 1.6%. Among all patients, the mean HbA(1c) values were >7% in 35%. The odds ratio of hospitalizations grouped by baseline HbA(1c) was significant at extremes of <5% and >11%. Similar relationships were evident for the subset of type 2 DM and in the analysis for hospitalizations due to sepsis. CONCLUSION Extremely high and low HbA(1c) values are associated with hospitalization risk in diabetic hemodialysis patients. Prospective studies are needed to determine whether meeting recommended HbA(1c) targets might improve outcomes without posing additional risks in this population.
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Affiliation(s)
- M E Williams
- Renal Unit, Joslin Diabetes Center, Boston, MA, USA.
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Cui Y, Tian M, Zong M, Teng M, Chen Y, Lu J, Jiang J, Liu X, Han J. Proteomic analysis of pancreatic ductal adenocarcinoma compared with normal adjacent pancreatic tissue and pancreatic benign cystadenoma. Pancreatology 2008; 9:89-98. [PMID: 19077459 DOI: 10.1159/000178879] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2008] [Accepted: 04/15/2008] [Indexed: 12/11/2022]
Abstract
BACKGROUND Dual expression of potential biomarkers in both benign and malignant pancreatic tumors was a major obstacle in the development of diagnostic biomarkers of early pancreatic cancer. METHODS To better understand the limitations of potential protein biomarkers in pancreatic cancer, we employed two-dimensional difference gel electrophoresis technology and tandem mass spectrometry to study protein expression profiles in pancreatic cancer tissues, benign pancreatic adenoma and normal adjacent pancreas. Seven differently expressed proteins were selected for validation by Western blot and/or immunohistochemistry. RESULTS 21 spots were overexpressed and 24 spots were downexpressed in pancreatic cancer compared with benign and normal adjacent tissues. Our study demonstrated that three candidate pancreatic ductal adenocarcinoma biomarkers identified in previous studies, fructose-bisphosphate aldolase A, alpha-smooth muscle actin and vimentin, were also overexpressed in pancreatic cystadenoma, which might lower their further utility as biomarkers for pancreatic cancer. Aflatoxin B(1) aldehyde reductase (AKR7A2) was confirmed to be only highly expressed in pancreatic cancer, not in normal adjacent pancreas and benign tumors. CONCLUSIONS The protein profile pattern of pancreatic cystadenoma was more similar to normal adjacent pancreas than pancreatic cancer. We identified panels of the upregulated proteins in pancreatic cancer, which have not been reported in prior proteomic studies. AKR7A2 may be a novel potential biomarker for pancreatic cancer.
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Affiliation(s)
- Yazhou Cui
- Key Laboratory of Ministry of Health for Biotech-Drug, Shandong Medicinal Biotechnology Center, Shandong Academy of Medical Sciences, Jinan, PR China
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Huang D, Lavaf A, Teng M, Packer S, Genden E, Kao J. The Incidence of Stroke in Patients with Head and Neck Cancer with or without Radiotherapy. Int J Radiat Oncol Biol Phys 2008. [DOI: 10.1016/j.ijrobp.2008.06.858] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Zhu YG, Sun GX, Lei M, Teng M, Liu YX, Chen NC, Wang LH, Carey AM, Deacon C, Raab A, Meharg AA, Williams PN. High percentage inorganic arsenic content of mining impacted and nonimpacted Chinese rice. Environ Sci Technol 2008; 42:5008-13. [PMID: 18678041 DOI: 10.1021/es8001103] [Citation(s) in RCA: 279] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Two approaches were undertaken to characterize the arsenic (As) content of Chinese rice. First, a national market basket survey (n = 240) was conducted in provincial capitals, sourcing grain from China's premier rice production areas. Second, to reflect rural diets, paddy rice (n = 195) directly from farmers fields were collected from three regions in Hunan, a key rice producing province located in southern China. Two of the sites were within mining and smeltery districts, and the third was devoid of large-scale metal processing industries. Arsenic levels were determined in all the samples while a subset (n = 33) were characterized for As species, using a new simple and rapid extraction method suitable for use with Hamilton PRP-X100 anion exchange columns and HPLC-ICP-MS. The vast majority (85%) of the market rice grains possessed total As levels < 150 ng g(-1). The rice collected from mine-impacted regions, however, were found to be highly enriched in As, reaching concentrations of up to 624 ng g(-1). Inorganic As (As(i)) was the predominant species detected in all of the speciated grain, with As(i) levels in some samples exceeding 300 ng g(-1). The As(i) concentration in polished and unpolished Chinese rice was successfully predicted from total As levels. The mean baseline concentrations for As(i) in Chinese market rice based on this survey were estimated to be 96 ng g(-1) while levels in mine-impacted areas were higher with ca. 50% of the rice in one region predicted to fail the national standard.
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Affiliation(s)
- Y G Zhu
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
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Du J, Cai X, Yao J, Ding X, Wu Q, Pei S, Jiang K, Zhang Y, Wang W, Shi Y, Lai Y, Shen J, Teng M, Huang H, Fei Q, Reddy ES, Zhu J, Jin C, Yao X. The mitotic checkpoint kinase NEK2A regulates kinetochore microtubule attachment stability. Oncogene 2008; 27:4107-14. [PMID: 18297113 DOI: 10.1038/onc.2008.34] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Loss or gain of whole chromosome, the form of chromosome instability commonly associated with cancers is thought to arise from aberrant chromosome segregation during cell division. Chromosome segregation in mitosis is orchestrated by the interaction of kinetochores with spindle microtubules. Our studies show that NEK2A is a kinetochore-associated protein kinase essential for faithful chromosome segregation. However, it was unclear how NEK2A ensures accurate chromosome segregation in mitosis. Here we show that NEK2A-mediated Hec1 (highly expressed in cancer) phosphorylation is essential for faithful kinetochore microtubule attachments in mitosis. Using phospho-specific antibody, our studies show that NEK2A phosphorylates Hec1 at Ser165 during mitosis. Although such phosphorylation is not required for assembly of Hec1 to the kinetochore, expression of non-phosphorylatable mutant Hec1(S165) perturbed chromosome congression and resulted in a dramatic increase in microtubule attachment errors, including syntelic and monotelic attachments. Our in vitro reconstitution experiment demonstrated that Hec1 binds to microtubule in low affinity and phosphorylation by NEK2A, which prevents aberrant kinetochore-microtubule connections in vivo, increases the affinity of the Ndc80 complex for microtubules in vitro. Thus, our studies illustrate a novel regulatory mechanism in which NEK2A kinase operates a faithful chromosome attachment to spindle microtubule, which prevents chromosome instability during cell division.
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Affiliation(s)
- J Du
- Hefei National Laboratory for Physical Sciences at Micro-scale, University of Science and Technology of China, Hefei, China
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Williams M, Lacson E, Teng M, Lazarus J, Hakim R. 236. Am J Kidney Dis 2007. [DOI: 10.1053/j.ajkd.2007.02.244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Williams ME, Lacson E, Teng M, Ofsthun N, Lazarus JM. Hemodialyzed type I and type II diabetic patients in the US: Characteristics, glycemic control, and survival. Kidney Int 2006; 70:1503-9. [PMID: 16941022 DOI: 10.1038/sj.ki.5001789] [Citation(s) in RCA: 145] [Impact Index Per Article: 8.1] [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: 01/20/2023]
Abstract
Diabetes mellitus (DM) constitutes a major end-stage renal disease (ESRD) health problem. Glycemic control is fundamental to the management of diabetes and its complications, and relies on monitoring of hyperglycemia. We therefore performed a primary data analysis of glycemic control and survival on a large national ESRD database. Ninety-five percent of patients with DM had type II diabetes (N = 23,504), and five percent had type I diabetes (N = 1,371). For the combined population, the mean hemoglobin A1c (HgbA1c) was 6.77%, and the mean random blood glucose was 168 mg/dl. Mean HgbA1c values were >7.0% in 35% and >8.5% in 14%. Mean HgbA1c values were below 5% in 11.3% of patients. Type I study patients tended to have higher HgbA1c values. Most patients (75.8%) had three or more random blood glucose determinations within 90 days preceding the HgbA1c measurement. The HgbA1c showed only a weak correlation with mean random glucose values (R2 0.3716; s.e. = 1.36). The survival rates in the subsequent 12-month period ranged from 80 to 85% across different HgbA1c strata. Kaplan-Meier survival curves grouped by HgbA1c levels showed no correlation between HgbA1c and survival at 12 months. More studies are needed to refine recommendations for the role of HgbA1c and glycemic control in this patient population.
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Affiliation(s)
- M E Williams
- Renal Unit, Joslin Diabetes Center, One Joslin Place, Boston, Massachusetts, USA.
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Li H, Shinohara ET, Cai Q, Chen H, Courtney R, Cao C, Wang Z, Teng M, Zheng W, Lu B. Plasminogen Activator Inhibitor-1 Promoter Polymorphism is Not Associated With the Aggressiveness of Disease in Prostate Cancer. Clin Oncol (R Coll Radiol) 2006; 18:333-7. [PMID: 16703752 DOI: 10.1016/j.clon.2006.02.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AIMS PAI-1 (plasminogen activator inhibitors-1) regulates plasminogen activation, and is related to tumour development. This study aims to test whether the promoter polymorphism in the PAI-1 gene is related to the aggressiveness of disease in prostate cancer. MATERIALS AND METHODS In the present study, Taqman SNP genotyping assay was used to detect PAI-1 4G/5G polymorphism in DNA from paraffin-embedded tissues of 98 Caucasian patients with prostate cancer. RESULTS The distribution of the genotypes is in Hardy-Weinberg equilibrium. The genotype had no statistically significant relationship with other prognostic factors. Similar risks for recurrence were seen in individuals with the 4G/4G and 4G/5G genotypes compared to those with 5G/5G genotype (odds ratio [OR] 2.65, 95% CI: 0.41-16.94, P = 0.30; OR = 2.19, 95% CI: 0.38-12.49, P = 0.38). CONCLUSION We concluded that PAI-1 promoter polymorphism is not associated with the aggressiveness of disease in prostate cancer.
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Affiliation(s)
- H Li
- Department of Thoracic Surgery, Cancer Hospital/Cancer Institute, Fudan University, Shanghai, People's Republic of China
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Mishler R, Sands JJ, Ofsthun NJ, Teng M, Schon D, Lazarus JM. Dedicated outpatient vascular access center decreases hospitalization and missed outpatient dialysis treatments. Kidney Int 2006; 69:393-8. [PMID: 16408132 DOI: 10.1038/sj.ki.5000066] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Dedicated outpatient vascular access centers (VAC) specializing in percutaneous interventions (angiography, thrombectomy, angioplasty and catheter placement) provide outpatient therapy that can obviate the need for hospitalization. This paper reports the impact of one VAC staffed by interventional nephrologists on vascular access-related hospitalization and missed outpatient dialysis treatments. We performed a retrospective analysis of vascular access-related hospitalized days and missed vascular access-related outpatient dialysis treatments from 1995 to 2002 in 21 Phoenix Arizona Facilities (5928 cumulative patients) and 1275 cumulative Fresenius Medical Care North America (FMCNA) facilities (289,454 cumulative patients) to evaluate the impact of the introduction of a VAC in Phoenix. Vascular access-related hospitalized days/patient year and missed dialysis treatments/patient year declined from 1997 to 2002 across all access types. The decline was greater in Phoenix and coincided with the creation of a VAC in 1998. By 2002, there were 0.57 fewer hospitalized days/patient year and 0.29 fewer missed treatments/patient year than in the national sample (P<0.01). In 2002, the relative risk for vascular access hospitalized days was 0.38 (95% confidence interval (CI) 0.27-0.5) (P<0.01) and for vascular access-related missed outpatient dialysis treatments was 0.34 (95% CI 0.24-0.49) (P<0.01) in Phoenix vs FMCNA after adjustment for age, gender, diabetic status duration of dialysis and access type. VAC development was associated with a significant decrease in vascular access-related hospitalization and missed outpatient dialysis treatments. Further studies are necessary to demonstrate this effect in other communities.
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Affiliation(s)
- R Mishler
- Arizona Kidney Disease and Hypertension Center, Phoenix, Arizona 85102, USA.
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Proffitt J, Coffey C, Teng M. SU-FF-T-33: Introduction to 3-D Image-Based Treatment Planning for Complex Brachytherapy of Soft Tissue Sarcoma. Med Phys 2005. [DOI: 10.1118/1.1997704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Duggan D, Murphy BA, Beach M, Teng M, Hallahan D, Burkey B, Netterville J, Chung CH, Butler L, Cmelak AJ. Intensity-modulated radiation therapy (IMRT) with concurrent taxane-based chemotherapy for locally-advanced head and neck cancer(LAHNC): Feasibility, technique, and toxicities. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.5536] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [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)
- D. Duggan
- Vanderbilt-Ingram Cancer Ctr, Nashville, TN; Vanderbilt-Ingram Cancer Ctr at Franklin, Franklin, TN
| | - B. A. Murphy
- Vanderbilt-Ingram Cancer Ctr, Nashville, TN; Vanderbilt-Ingram Cancer Ctr at Franklin, Franklin, TN
| | - M. Beach
- Vanderbilt-Ingram Cancer Ctr, Nashville, TN; Vanderbilt-Ingram Cancer Ctr at Franklin, Franklin, TN
| | - M. Teng
- Vanderbilt-Ingram Cancer Ctr, Nashville, TN; Vanderbilt-Ingram Cancer Ctr at Franklin, Franklin, TN
| | - D. Hallahan
- Vanderbilt-Ingram Cancer Ctr, Nashville, TN; Vanderbilt-Ingram Cancer Ctr at Franklin, Franklin, TN
| | - B. Burkey
- Vanderbilt-Ingram Cancer Ctr, Nashville, TN; Vanderbilt-Ingram Cancer Ctr at Franklin, Franklin, TN
| | - J. Netterville
- Vanderbilt-Ingram Cancer Ctr, Nashville, TN; Vanderbilt-Ingram Cancer Ctr at Franklin, Franklin, TN
| | - C. H. Chung
- Vanderbilt-Ingram Cancer Ctr, Nashville, TN; Vanderbilt-Ingram Cancer Ctr at Franklin, Franklin, TN
| | - L. Butler
- Vanderbilt-Ingram Cancer Ctr, Nashville, TN; Vanderbilt-Ingram Cancer Ctr at Franklin, Franklin, TN
| | - A. J. Cmelak
- Vanderbilt-Ingram Cancer Ctr, Nashville, TN; Vanderbilt-Ingram Cancer Ctr at Franklin, Franklin, TN
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Abstract
BACKGROUND Medical communities often develop practice guidelines recommending certain care processes intended to promote better clinical outcome among patients. Conformance with those guidelines by facilities is then monitored to evaluate care quality, presuming that the process is associated with and can be used reliably to predict clinical outcome. Outcome is often monitored as a facility-specific mortality rate (SMR) standardized to the mix of patients treated, also presuming that inferior outcome implies a suboptimal process. The U.S. Health Care Financing Administration monitors three practice guidelines, called Core Indicators, in dialysis facilities to assist management of its end-stage renal disease program: (1) patients' hematocrit values should exceed 30 vol%, (2) the urea reduction ratio (URR) during dialysis should equal or exceed 65%, and (3) patients' serum albumin concentrations should equal or exceed 3.5 g/dL. METHODS The associations of a facility-specific SMR were evaluated with the fractions of hemodialysis patients not conforming to (that is, at variance with) the Core Indicators during three successive years (1993 to 1995) in large numbers of facilities (394, 450, and 498) using one-variable and multivariable statistical models. Three related strategies were used. First, the association of the SMR with the fraction of patients not meeting the guideline was evaluated. Second, each facility was classified by whether its SMR exceeded the 80% confidence interval above 1.0 (worse than 1.0, Group 3), was less than the interval below 1.0 (better than 1.0, Group 1), or was within the interval (Group 2). The fraction of those patients who did not meet the Indicator guidelines was then evaluated in each group. Third, the ability of variance from Indicator guidelines to predict into which of the three SMR groups a facility would be categorized was evaluated. RESULTS SMR was directly correlated with variance from the Indicator guidelines, but the strengths of the associations were weak particularly for the hematocrit (R(2) = 2.2%, 5.6, and 2.2 for each of the 3 years) and URR Indicators (R(2) = 2.6, 0.6, 3.3). It was stronger for the albumin Indicator (R(2) = 11.6, 20.4, 21.8). The fractions of patients falling outside of the Indicator guidelines tended to be higher in the highest SMR group. The groups were not well separated, however, particularly for the hematocrit and URR Indicators, and there was substantial overlap between them. Finally, although the likelihood that a facility would be a member of the high or low SMR group was associated with fractional variance from Core Indicator guidelines, the strengths of association were weak, and the probability that a facility would be a member of the high or low group could not be easily distinguished from the probability that it would be a member of the middle group. CONCLUSIONS While there were statistical associations between SMR and the fraction of patients in facilities who were at variance with these guidelines, they were weak and variances from the guidelines could not be used reliably to predict high or low SMR. Such findings do not imply that measures reflecting anemia, dialysis dose, or medical processes that influence serum albumin concentration are irrelevant to the quality of care. They do suggest, however, that more attention needs be paid to these and other associates and causes of mortality among dialysis patients when developing care process indicator guidelines.
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Affiliation(s)
- E G Lowrie
- Fresenius Medical Care (NA), Incorporated, 95 Hayden Avenue, Lexington, MA 02173, USA.
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