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Chen HD, Lu B, Zheng Y, Du P, Qi X, Zhang K, Liu YY, Wei JL, Wei DH, Gong JY, Huang YC, Song ZY, Chu X, Dong D, Zheng WJ, Dai M. [Interpretation of specification for service of cancer screening for workers]. Zhonghua Liu Xing Bing Xue Za Zhi 2024; 45:486-489. [PMID: 38678342 DOI: 10.3760/cma.j.cn112338-20240311-00114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 04/29/2024]
Abstract
As the backbone force of China's social and economic construction, the health status of workers is closely related to the nation's productivity and social development. Currently, cancers have become one of the major diseases threatening the health of workers. However, there are still many shortcomings in the cancer screening services for the workers. To standardize cancer screening services for workers, ensure the quality of screening services, and improve the overall screening effectiveness, 19 institutions, including Peking Union Medical College Hospital of the Chinese Academy of Medical Sciences, have jointly formulated the Group Standard "Specification for service of cancer screening for workers (T/CHAA 023-2023)". This standard follows the principles of "legality, scientific rigor, advancement, and feasibility" and combines the frontier scientific advances in cancer screening. It clarifies the relevant requirements for service principles, service design, service delivery, service management, service evaluation, and improving worker cancer screening. Implementing this group standard will help connect the common screening needs of workers, employers, and cancer screening service providers, standardize the screening process, improve screening quality, and ultimately increase the early diagnosis rate and survival rate of cancer patients. Consequently, this group standard will help safeguard workers' health rights and interests, ensure the labor force resources, promote the comprehensive coordinated and sustainable development of society, and contribute to realizing the "Healthy China 2030" strategic policy.
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Affiliation(s)
- H D Chen
- Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - B Lu
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Y Zheng
- Fudan University Shanghai Cancer Center, Shanghai 200032, China
| | - P Du
- Beijing Cancer Hospital, Beijing 100142, China
| | - X Qi
- Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - K Zhang
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Y Y Liu
- Cancer Prevention Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
| | - J L Wei
- Henan Cancer Hospital, Zhengzhou 450003, China
| | - D H Wei
- Anhui Cancer Hospital, Hefei 230071, China
| | - J Y Gong
- Department of Preventive Management, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250117, China
| | - Y C Huang
- Yunnan Cancer Hospital, The Third Affiliated Hospital of Kunming Medical University, Cancer Center of Yunnan Province, Kunming 650106, China
| | - Z Y Song
- Department of Health Management Center and Department of General Medicine, The Second Affiliated Hospital Zhejiang University School of Medicine, Hangzhou 310009, China
| | - X Chu
- Xuanwu Hospital, Capital Medical University, Beijing 100053, China
| | - D Dong
- Xuzhou Cancer Hospital, Xuzhou 221005, China
| | - W J Zheng
- Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - M Dai
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
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Taylor K, Barron T, Zhang H, Hui A, Hartmann G, Ni L, Venkatesh H, Du P, Mancusi R, Yalçin B, Chau I, Ponnuswami A, Aziz-Bose R, Monje M. CNSC-17. GLIOMA SYNAPSES RECRUIT MECHANISMS OF ADAPTIVE PLASTICITY. Neuro Oncol 2022. [PMCID: PMC9661120 DOI: 10.1093/neuonc/noac209.098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Abstract
The nervous system plays an increasingly appreciated role in the regulation of cancer. In malignant gliomas, neuronal activity drives tumor progression not only through paracrine signaling factors such as neuroligin-3 and brain-derived neurotrophic factor (BDNF), but also through electrophysiologically functional neuron-to-glioma synapses. Malignant synapses are mediated by calcium-permeable AMPA (α-amino-3-hydroxy-5-methyl-4-isoxazole propionic acid) receptors in both pediatric and adult high-grade gliomas, and consequent depolarization of the glioma cell membrane drives tumor proliferation. The nervous system exhibits plasticity of both synaptic connectivity and synaptic strength, contributing to neural circuit form and functions. In health, one factor that promotes plasticity of synaptic connectivity and strength is activity-regulated secretion of the neurotrophin BDNF. Here, we show that malignant synapses exhibit similar plasticity regulated by BDNF-TrkB (tropomyosin receptor kinase B) signaling. Signaling through the receptor TrkB, BDNF promotes AMPA receptor trafficking to the glioma cell membrane, resulting in increased amplitude of glutamate-evoked currents in the malignant cells. This potentiation of malignant synaptic strength shares mechanistic features with the long-term potentiation (LTP) that is thought to contribute to memory and learning in the healthy brain. BDNF-TrkB signaling also regulates the number of neuron-to-glioma synapses. Abrogation of activity-regulated BDNF secretion from the brain microenvironment or loss of TrkB in human glioma cells exerts growth inhibitory effects in vivo and in neuron:glioma co-cultures that cannot be explained by classical growth factor signaling alone. Blocking TrkB genetically or pharmacologically abrogates these effects of BDNF on glioma synapses and substantially prolongs survival in xenograft models of pediatric glioblastoma and diffuse intrinsic pontine glioma (DIPG). Taken together, these findings indicate that BDNF-TrkB signaling promotes malignant synaptic plasticity and augments tumor progression. While targeting Trk signaling is presently being explored for NTRK-fusion brain tumors, these findings indicate that BDNF-TrkB signaling may also represent an important therapeutic target for NTRK2 wildtype gliomas.
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Affiliation(s)
- Kathryn Taylor
- Department of Neurology and Neurological Sciences, Stanford University , Stanford, CA , USA
| | - Tara Barron
- Department of Neurology and Neurological Sciences, Stanford University , Stanford, CA , USA
| | - Helena Zhang
- Department of Neurology and Neurological Sciences, Stanford University , Stanford, CA , USA
| | - Alexa Hui
- Department of Neurology and Neurological Sciences, Stanford University , Stanford, CA , USA
| | - Griffin Hartmann
- Department of Neurology and Neurological Sciences, Stanford University , Stanford, CA , USA
| | - Lijun Ni
- Department of Neurology and Neurological Sciences, Stanford University , Stanford , USA
| | - Humsa Venkatesh
- Department of Neurology and Neurological Sciences, Stanford University , Stanford , USA
| | - Peter Du
- Department of Neurology and Neurological Sciences, Stanford University , Stanford , USA
| | - Rebecca Mancusi
- Department of Neurology and Neurological Sciences, Stanford University , Stanford, CA , USA
| | - Belgin Yalçin
- Department of Neurology and Neurological Sciences, Stanford University , Stanford, CA , USA
| | - Isabelle Chau
- Department of Neurology and Neurological Sciences, Stanford University , Stanford, CA , USA
| | - Anitha Ponnuswami
- Department of Neurology and Neurological Sciences, Stanford University , Stanford , USA
| | - Razina Aziz-Bose
- Department of Neurology and Neurological Sciences, Stanford University , Stanford, CA , USA
| | - Michelle Monje
- Department of Neurology and Neurological Sciences, Stanford University , Stanford, CA , USA
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Xu H, Liu X, Zhang Y, Liu C, Meng F, Du P, Li L. 1715P The landscape of SMAD4 alteration in Chinese solid tumor patients. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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Davis A, Luo J, Zheng T, Dai C, Suresh R, Ademuyiwa F, Rigden C, Clifton K, Weilbaecher K, Frith A, Tandra P, Summa T, Thomas S, Peterson L, Wang X, Du P, Jia S, King B, Krishnamurthy J, Ma C. 108P Copy loss enrichment at metastatic disease progression in hormone receptor-positive (HR+)/HER2-negative metastatic breast cancer patients treated with endocrine therapy and CDK4/6 inhibition. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.140] [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: 11/29/2022] Open
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Wang Y, Li P, Yang R, Wang D, Wang L, Wang S, Liu C, Li J, Liu C, Tong Y, Zhang Y, Meng F, Du P, Li L. EP01.01-012 Clinical and Molecular Features of Chinese Early-stage Multiple Primary Lung Cancer Patients. J Thorac Oncol 2022. [DOI: 10.1016/j.jtho.2022.07.274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Li R, Bonora G, Dai C, Xiang B, Zheng T, Mo W, Wang X, Zhou K, Jia S, Luo S, Du P. 911P The development and application of a baseline-agnostic minimal residual disease assay. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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Abstract
BACKGROUND Contribution to literature is critical for progress in the field of orthopaedics. No previous study has yet examined the academic productivity of foot and ankle surgery fellowship faculty. PURPOSE To evaluate the publishing productivity of foot and ankle fellowship faculty. METHODS Faculty and program characteristics of orthopaedic foot and ankle fellowship programs across the United States and Canada were collected from American Orthopaedic Foot and Ankle Society (AOFAS) and program websites. Faculty publication productivity measures, including publications, number of publications in specific journals, number of citations, and Hirsch index (h-index) were gathered using the Scopus database. RESULTS A total of 48 AOFAS foot and ankle surgery fellowship programs were identified with an associated 185 faculty members. The mean number of publications per faculty member was 44.9 (SD = 53.0; range = 0-323), with a mean h-index of 11.9 (SD = 10.6; range = 0-54). A total of 144 (77.8%) academic-affiliated faculty had a significantly greater number of publications (P < .01), total citations (P < .05), and publications in Foot and Ankle International (P < .05), Journal of Bone and Joint Surgery (P < .05), Clinical Orthopaedics and Related Research (P < .05), and Journal of the American Academy of Orthopaedic Surgeons (P < .05) compared to the 41 (22.2%) nonacademic faculty. There were no significant differences between measures of publication productivity between male and female faculty, except for maximum citations in a single article (67.1 vs 142.3; P < .05). CONCLUSIONS Academic-affiliated foot and ankle fellowship faculty have higher research productivity than nonacademic surgeons. The mean h-index of foot and ankle fellowship faculty was 11.9, which is lower than that reported in sports, joints, and spine fellowship faculty but higher than that reported for hand fellowship faculty. LEVEL OF EVIDENCE Level IV.
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Affiliation(s)
- Nathan Sherman
- Department of Orthopaedic Surgery, University of Arizona, Tucson, Arizona
| | - Nathaniel Bridge
- College of Medicine-Tucson, University of Arizona, Tucson, Arizona
| | - Ansab Khwaja
- Department of Orthopaedic Surgery, University of Arizona, Tucson, Arizona
| | - Peter Du
- Department of Orthopaedic Surgery, University of Arizona, Tucson, Arizona
| | - Lisa Truchan
- Department of Orthopaedic Surgery, University of Arizona, Tucson, Arizona
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Zhou L, Zeng Z, Egloff AM, Zhang F, Guo F, Campbell KM, Du P, Fu J, Zolkind P, Ma X, Zhang Z, Zhang Y, Wang X, Gu S, Riley R, Nakahori Y, Keegan J, Haddad R, Schoenfeld JD, Griffith O, Manguso RT, Lederer JA, Liu XS, Uppaluri R. Checkpoint blockade-induced CD8+ T cell differentiation in head and neck cancer responders. J Immunother Cancer 2022; 10:jitc-2021-004034. [PMID: 35058328 PMCID: PMC8772459 DOI: 10.1136/jitc-2021-004034] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/14/2021] [Indexed: 12/11/2022] Open
Abstract
Background Immune checkpoint blockade (ICB) response in recurrent/metastatic head and neck squamous cell carcinoma (HNSCC) is limited to 15%–20% of patients and underpinnings of resistance remain undefined. Methods Starting with an anti-PD1 sensitive murine HNSCC cell line, we generated an isogenic anti-PD1 resistant model. Mass cytometry was used to delineate tumor microenvironments of both sensitive parental murine oral carcinoma (MOC1) and resistant MOC1esc1 tumors. To examine heterogeneity and clonal dynamics of tumor infiltrating lymphocytes (TILs), we applied paired single-cell RNA and TCR sequencing in three HNSCC models. Results Anti-PD1 resistant MOC1esc1 line displayed a conserved cell intrinsic immune evasion signature. Immunoprofiling showed distinct baseline tumor microenvironments of MOC1 and MOC1esc1, as well as the remodeling of immune compartments on ICB in MOC1esc1 tumors. Single cell sequencing analysis identified several CD8 +TIL subsets including Tcf7 +Pd1− (naïve/memory-like), Tcf7 +Pd1+ (progenitor), and Tcf7-Pd1+ (differentiated effector). Mapping TCR shared fractions identified that successful anti-PD1 or anti-CTLA4 therapy-induced higher post-treatment T cell lineage transitions. Conclusions These data highlight critical aspects of CD8 +TIL heterogeneity and differentiation and suggest facilitation of CD8 +TIL differentiation as a strategy to improve HNSCC ICB response.
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Affiliation(s)
- Liye Zhou
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA
| | - Zexian Zeng
- Department of Data Science, Dana-Farber Cancer Institute, Boston, Massachusetts, USA
| | - Ann Marie Egloff
- Department of Surgery, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Fan Zhang
- Department of Surgery, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Fei Guo
- Department of Surgery, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Katie M Campbell
- Department of Medicine, University of California Los Angeles, Los Angeles, California, USA
| | - Peter Du
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
| | - Jingxin Fu
- Department of Data Science, Dana-Farber Cancer Institute, Boston, Massachusetts, USA
- Clinical Translational Research Center, Shanghai Pulmonary Hospital, School of Life Science and Technology, Tongji University, Shanghai, People's Republic of China
| | - Paul Zolkind
- Department of Otolaryngology, Washington University in St Louis School of Medicine, St Louis, Missouri, USA
| | - Xiaojing Ma
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA
- School of Food and Biological Engineering, Hefei University of Technology, Hefei, Anhui, People's Republic of China
| | - Zhe Zhang
- Department of Data Science, Dana-Farber Cancer Institute, Boston, Massachusetts, USA
| | - Yi Zhang
- Department of Data Science, Dana-Farber Cancer Institute, Boston, Massachusetts, USA
| | - Xiaoqing Wang
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA
- Department of Data Science, Dana-Farber Cancer Institute, Boston, Massachusetts, USA
| | - Shengqing Gu
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA
- Department of Data Science, Dana-Farber Cancer Institute, Boston, Massachusetts, USA
| | - Rachel Riley
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA
| | - Yasutaka Nakahori
- Department of Surgery, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Joshua Keegan
- Department of Surgery, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Robert Haddad
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA
| | - Jonathan D Schoenfeld
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA
- Department of Radiation Oncology, Brigham and Women's Hospital, Boston, MA, USA
| | - Obi Griffith
- McDonnell Genome Institute and Department of Genetics, Washington University School of Medicine, St. Louis, MO, USA
| | - Robert T Manguso
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
- Massachusetts General Hospital Center for Cancer Research, Boston, Massachusetts, USA
| | - James A Lederer
- Department of Surgery, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - X Shirley Liu
- Department of Data Science, Dana-Farber Cancer Institute, Boston, Massachusetts, USA
| | - Ravindra Uppaluri
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA
- Department of Surgery, Brigham and Women's Hospital, Boston, Massachusetts, USA
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Hong BA, Du X, Ji YP, Zhao Q, Wang S, Liu J, Cao YD, Yang X, Du P, Yang Y, Zhang N. [Safety and efficacy of laparoscopic microwave ablation combined with partial nephrectomy for renal tumors: initial experience]. Zhonghua Yi Xue Za Zhi 2021; 101:3794-3798. [PMID: 34895419 DOI: 10.3760/cma.j.cn112137-20210707-01524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the safety and efficacy of laparoscopic microwave ablation combined with partial nephrectomy in the treatment of renal tumors. Methods: The 65 patients with renal tumors undergoing laparoscopic microwave ablation combined with partial nephrectomy from November 2017 to May 2021 were retrospectively analyzed. There were 46 males and 19 females. The average age was (56.6±14.1) years. The mean body mass index was (25.7±3.3) kg/m2. The tumors located in the left kidney in 30 cases and the right kidney in 35 cases. The ECOG score was 0 in 59 patients and 1 in 6 patients. The mean maximum diameter of the tumors was (2.3±1.0) cm(1.0-5.0 cm). According to R.E.N.A.L. scoring, 41 cases were of low difficulty (4-6 points), 23 cases of medium difficulty (7-9 points) and 1 case of high difficulty (10-12 points). The renal tumors were ablated by laparoscopic microwave ablation, then followed by partial nephrectomy. Postoperative complications were observed and the prognosis was assessed by CT or MRI. Results: The mean duration of operation was (76.6±19.4) min (40-120 min). The median intraoperative blood loss was 20 ml(5-50 ml). The median duration of postoperative hospitalization was 4 d(3-6 d). Complications of Clavien grade Ⅰ were found in 11 patients (fever, nausea and vomiting, lumbar pain), and no complications were grade Ⅱ or above. Postoperative pathology showed that no positive margin was found, and 46 cases of clear cell renal cell carcinoma (AJCC stage: T1a stage 42 cases, T1b stage 4 cases; WHO/ISUP classification: 21 cases of grade 1, 23 cases of grade 2, 2 cases of grade 3); 2 cases of type 1 papillary renal cell carcinoma (stage T1a, grade 1); 1 case of type 2 papillary renal cell carcinoma (T1b stage, grade 2); 2 cases of renal chromophobe carcinoma (all stage T1a); 1 case of low-grade malignant potential multilocular cystic renal tumor; 2 cases of adenocarcinoma (combined with the postoperative history of rectal cancer, metastasis was considered); 6 cases of renal angiomyolipoma; 2 cases of eosinophiloma; 1 case of papillary adenoma; 1 case of benign renal cyst and 1 case of renal hemangioma with calcification. The median follow-up was 24 months (1-42 months). Sixty-three patients survived and two died (one due to heart disease and one due to metastatic colorectal cancer). According to postoperative imaging, there were no signs of tumor recurrence or metastasis in other cases. Blood tests were performed regularly, and no significant abnormalities occurred. Conclusions: The safety and efficacy of laparoscopic microwave ablation combined with partial nephrectomy for the treatment of renal tumor is satisfactory, such as less intraoperative bleeding, fewer complications, less effect on renal function and postoperative pathology, providing a potential option for renal tumor treatment.
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Affiliation(s)
- B A Hong
- Department of Urology, Peking University Cancer Hospital & Institute, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Beijing 100142,China
| | - X Du
- Department of Urology, Peking University Cancer Hospital & Institute, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Beijing 100142,China
| | - Y P Ji
- Department of Urology, Peking University Cancer Hospital & Institute, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Beijing 100142,China
| | - Q Zhao
- Department of Urology, Peking University Cancer Hospital & Institute, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Beijing 100142,China
| | - S Wang
- Department of Urology, Peking University Cancer Hospital & Institute, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Beijing 100142,China
| | - J Liu
- Department of Urology, Peking University Cancer Hospital & Institute, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Beijing 100142,China
| | - Y D Cao
- Department of Urology, Peking University Cancer Hospital & Institute, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Beijing 100142,China
| | - X Yang
- Department of Urology, Peking University Cancer Hospital & Institute, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Beijing 100142,China
| | - P Du
- Department of Urology, Peking University Cancer Hospital & Institute, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Beijing 100142,China
| | - Y Yang
- Department of Urology, Peking University Cancer Hospital & Institute, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Beijing 100142,China
| | - N Zhang
- Department of Urology, Peking University Cancer Hospital & Institute, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Beijing 100142,China
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Liao H, Zheng T, Liu H, Dong X, Wang A, Du P, Jia S, King B, Yu J, Li H. 300P Mutational patterns across breast cancer subtypes during metastatic disease progression. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Yan ZW, Du P, Zhang W, Sun WC, Jia L, Jiang M, Liu Y, Guo HL. Expression of miR-182 in patients with fracture of tibial plateau and its regulative effects on the fracture healing. Eur Rev Med Pharmacol Sci 2021; 25:35-44. [PMID: 33506890 DOI: 10.26355/eurrev_202101_24343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To investigate the expression of miR-182 in patients with fracture of tibial plateau (FTP) and its effects on osteoblasts and fracture healing. PATIENTS AND METHODS The patients with fracture of tibial plateau treated in our hospital and healthy subjects who received physical examination from January 2017 to January 2018 were collected. The expression of miR-182 in the serum was detected. The osteoblasts from SD rats were cultured and transfected with miR-182, anti-miR-182, miR-NC or anti-miR-NC using transfection reagent LipofectamineTM 2000. The proliferation, alkaline phosphatase (ALP) activity, calcification and osteogenic gene expression of osteoblasts were detected. The rat models with fracture of tibial plateau were divided into control group, fracture group, fracture+miR-182 group, and fracture+anti-miR-182 group. The levels of vascular endothelial growth factor (VEGF), epidermal growth factor (EGF) and transforming growth factor β (TGFβ) in serum were detected by enzyme-linked immunosorbent assay (ELISA). RESULTS Compared with the controls, the expression of miR-182 in serum was significantly elevated in patients with fracture of tibial plateau. Overexpression of miR-182 inhibited the proliferation of osteoblasts, while the knockdown of miR-182 increased the proliferation. MiR-182 could decrease the ALP activity of osteoblasts, while anti-miR-182 increased the ALP activity. Osteoblast calcification ability was significantly decreased by overexpression of miR-182. Knockdown of miR-182 increased the calcification ability of osteoblasts and the expression of osteogenic genes. MiR-182 could inhibit the expression of osteogenic genes. The levels of VEGF, EGF and TGFβ in the fracture group were higher than those in the control group, while the levels in the fracture+miR-182 group were higher than those in the fracture group. The levels of VEGF, EGF and TGFβ in the anti-miR-182 group were lower than those in the fracture group. CONCLUSIONS MiR-182 is elevated in patients with fracture of tibial plateau, which can inhibit the proliferation and differentiation of osteoblasts and affect the fracture healing. The knockdown of miR-182 might be a new method for treating fracture healing.
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Affiliation(s)
- Z-W Yan
- Department of Rehabilitation Medicine, The Third Affiliated Hospital of Qiqihar Medical University, Qiqihar, Heilongjiang, P.R. China.
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Du P, Wang Z, Geng J, Wang Y. Expression and Clinical Significance of OX40 and OX40L mRNA in Hepatocellular Carcinoma. Bull Exp Biol Med 2021; 170:485-488. [PMID: 33713232 DOI: 10.1007/s10517-021-05093-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 08/18/2020] [Indexed: 01/18/2023]
Abstract
In a retrospective study, the expression of mRNA of membrane receptor OX40 and its ligand OX40L in liver tissues was analyzed in 34 patients with hepatocellular carcinoma in order to assess their clinical implications and prognostic value. Expression of mRNA was analyzed by reverse transcription PCR and TaqMan probes. Expression of OX40 mRNA was significantly higher in tumor specimens in paired comparison with the samples of adjacent non-tumor tissue or normal liver tissue of control patients. In contrast, expression of OX40L mRNA was lower in tumor tissue in paired comparison with the samples of adjacent non-tumor tissue or normal liver tissue. The clinical and pathological analysis showed that expression of OX40 mRNA significantly correlated with the degree of tumor differentiation; there was an insignificant decreasing trend in the length of recurrence-free period. It was hypothesized that microenvironment of hepatocellular carcinoma can induce immunosuppression due to dysregulation of the expression of OX40 and OX40L in tumor tissue, which promotes tumor growth.
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Affiliation(s)
- P Du
- Clinical Laboratory of Emergency Medicine, Tianjin Union Medical Centre, Tianjin, P.R. China
| | - Z Wang
- Department of Pathology, Tianjin First Central Hospital, Tianjin, P.R. China
| | - J Geng
- Department of Clinical Laboratory, 2nd Hospital of Tianjin Medical University, Tianjin, P.R. China
| | - Y Wang
- Department of Clinical Laboratory, 2nd Hospital of Tianjin Medical University, Tianjin, P.R. China.
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Kwan EM, Dai C, Fettke H, Hauser C, Bukczynska P, Ng N, Foroughi S, Graham LJK, Mahon KL, Tan W, Wang A, Zhao Z, Zheng T, Zhou K, Yu JJ, Du P, Horvath L, Jia S, Kohli M, Azad A. Plasma cell-free DNA profiling of PI3K/Akt pathway aberrations in two multi-institutional independent metastatic castration-resistant prostate cancer (mCRPC) cohorts. J Clin Oncol 2021. [DOI: 10.1200/jco.2021.39.6_suppl.159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
159 Background: Tumour tissue from metastatic castration-resistant prostate cancer (mCRPC) harbors frequent copy number variations (CNVs) in the phosphatidylinositol-3-kinase (PI3K)/Akt-signaling pathway. However, identifying CNVs in plasma cell-free DNA (cfDNA) has proven challenging. With emerging data supporting Akt inhibition in PTEN-deficient mCRPC, cfDNA assays for robustly identifying PI3K/Akt pathway aberrations including CNVs are urgently required. Methods: In this multi-institutional prospective biomarker study, we used the Predicine cfDNA assay, optimised for CNV detection, to perform targeted sequencing in 231 mCRPC patients in two independent cohorts (Australian, n = 78; US, n = 153). Kaplan-Meier survival estimates and multivariable Cox regression analysis were used to assess associations between genomic aberrations and progression-free survival (PFS) and overall survival (OS). Results: PTEN loss and PIK3CA gain were detected in 37% (85/231) and 17% (39/231) of patients, respectively. Poorer outcomes were observed in patients with PI3K/Akt pathway aberrations, including those with dual PTEN loss and PIK3CA gain (HR 2.3, 95% CI 1.2-4.4). Similarly, cumulative CNV burden in the PI3K/Akt and AR pathways (0 vs 1 vs ≥2 CNVs in Australian cohort: median OS 33.5 vs 17.2 vs 9.7 months, p< 0.001; 0 vs 1 vs ≥2 CNVs in US cohort: median OS 35.5 vs 14.3 vs 9.2 months, p< 0.001) was associated with significantly worse clinical outcomes. Notably, 21% (31/146) of PTEN-neutral patients harbored other alterations in the PI3K/Akt pathway. Conclusions: Our cfDNA assay readily detected PI3K/Akt pathway CNVs, with the prevalence of PTEN loss comparable to prior tissue sequencing studies. CNVs in the PI3K/Akt pathway were associated with deleterious clinical outcomes, especially when concurrent with AR gain. Additional PI3K/Akt pathway aberrations were found in approximately one-fifth of PTEN-neutral mCRPC. Collectively, our data demonstrate the potential utility of profiling cfDNA to facilitate and optimize patient selection for treatment with Akt inhibitors in mCRPC. [Table: see text]
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Affiliation(s)
| | | | - Heidi Fettke
- Department of Medicine, School of Clinical Sciences, Monash University, Melbourne, Australia
| | - Christine Hauser
- Cancer Research, Peter MacCallum Cancer Centre, Melbourne, Australia
| | | | - Nicole Ng
- Cancer Research, Peter MacCallum Cancer Centre, Melbourne, Australia
| | - Siavash Foroughi
- Walter and Eliza Hall Institute of Medical Research, Parkville, Australia
| | | | | | | | | | | | | | | | | | | | | | - Shidong Jia
- Huidu Shanghai Medical Sciences, Ltd., Shanghai, CA, China
| | | | - Arun Azad
- Peter MacCallum Cancer Center, Melbourne, VIC, Australia
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14
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Wu J, Iracheta-Vellve A, Patti J, Hsu J, Davis T, Dele-Oni D, Du P, Ishizuka J, Kim S, Klaeger S, Knudsen N, Miller B, Nguyen T, Robitschek E, Schneider E, Zimmer M, Jaffe J, Doench J, Haining WN, Yates K, Manguso R, Bernstein B, Griffin GK. Abstract PO009: Epigenetic silencing by SETDB1 represses tumor-cell intrinsic immunogenicity. Cancer Immunol Res 2021. [DOI: 10.1158/2326-6074.tumimm20-po009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Epigenetic alterations are defining features of many tumor types and have recently been implicated in tumor immunity. However, the epigenetic mechanisms that mediate immune sensitivity or resistance in cancer cells are poorly characterized. To systematically identify epigenetic regulators of immune evasion in cancer, we performed in vivo loss of function CRISPR screens against 936 chromatin regulator genes in syngeneic murine tumor models treated with immune checkpoint blockade. These screens identified SETDB1, an H3K9-methyltransferase, and associated members of the HUSH and KAP1 complexes as intrinsic mediators of immune evasion in cancer cells. We also found that amplification of SETDB1 (1q21) in certain human tumors is associated with immune exclusion and resistance to immune checkpoint blockade. Mechanistically, we find that SETDB1 targets broad domains, hundreds of kilobases in size, that are predominantly located within the open genome compartment “A” (i.e., euchromatin). These SETDB1 domains show strong enrichment for transposable elements (TEs) of the LTR family, and gene loci that arose through segmental duplication events, a key driver of mammalian genome evolution. Setdb1 KO derepresses latent regulatory elements at TEs within these regions and leads to the transcriptional up-regulation of nearby immune genes, including canonical stimulatory ligands of the NKG2D receptor. SETDB1 loss also triggers the activation of hundreds of TEs with the potential to encode retroviral proteins (Gag, Pol, Env), and promotes immune responses dependent on CD8+ T cells and tumor expression of MHC Class I. Our study establishes SETDB1 as an epigenetic checkpoint that represses intrinsic immunogenicity in cancer cells, and thus represents a novel target to enhance the efficacy and scope of immunotherapy.
Citation Format: Jingyi Wu, Arvin Iracheta-Vellve, James Patti, Jeffrey Hsu, Thomas Davis, Deborah Dele-Oni, Peter Du, Jeffrey Ishizuka, Sarah Kim, Susan Klaeger, Nelson Knudsen, Brian Miller, Tung Nguyen, Emily Robitschek, Emily Schneider, Margaret Zimmer, Jacob Jaffe, John Doench, W. Nicholas Haining, Kathleen Yates, Robert Manguso, Bradley Bernstein, Gabriel K. Griffin. Epigenetic silencing by SETDB1 represses tumor-cell intrinsic immunogenicity [abstract]. In: Abstracts: AACR Virtual Special Conference: Tumor Immunology and Immunotherapy; 2020 Oct 19-20. Philadelphia (PA): AACR; Cancer Immunol Res 2021;9(2 Suppl):Abstract nr PO009.
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Affiliation(s)
- Jingyi Wu
- 1Massachusetts General Hospital, Boston, MA, USA,
| | | | - James Patti
- 2Broad Institute of MIT and Harvard, Cambridge, MA, USA,
| | - Jeffrey Hsu
- 2Broad Institute of MIT and Harvard, Cambridge, MA, USA,
| | - Thomas Davis
- 2Broad Institute of MIT and Harvard, Cambridge, MA, USA,
| | | | - Peter Du
- 2Broad Institute of MIT and Harvard, Cambridge, MA, USA,
| | | | - Sarah Kim
- 2Broad Institute of MIT and Harvard, Cambridge, MA, USA,
| | - Susan Klaeger
- 2Broad Institute of MIT and Harvard, Cambridge, MA, USA,
| | - Nelson Knudsen
- 2Broad Institute of MIT and Harvard, Cambridge, MA, USA,
| | | | - Tung Nguyen
- 2Broad Institute of MIT and Harvard, Cambridge, MA, USA,
| | | | | | | | - Jacob Jaffe
- 2Broad Institute of MIT and Harvard, Cambridge, MA, USA,
| | - John Doench
- 2Broad Institute of MIT and Harvard, Cambridge, MA, USA,
| | | | - Kathleen Yates
- 2Broad Institute of MIT and Harvard, Cambridge, MA, USA,
| | - Robert Manguso
- 2Broad Institute of MIT and Harvard, Cambridge, MA, USA,
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15
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Wang X, Zhou H, Du P, Lan R, Chen D, Dong A, Lin X, Qiu X, Xu S, Ji X, Li M, Hou X, Sun L, Li D, Han L, Li Z. Genomic epidemiology of Corynebacterium striatum from three regions of China: an emerging national nosocomial epidemic. J Hosp Infect 2020; 110:67-75. [PMID: 33166588 DOI: 10.1016/j.jhin.2020.10.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 09/27/2020] [Accepted: 10/03/2020] [Indexed: 12/13/2022]
Abstract
BACKGROUND Corynebacteritum straitum has been considered as an emerging multi-drug-resistant (MDR) pathogen. Isolation of MDR C. striatum as the only organism from respiratory samples from hospitalized patients is increasing in China. AIM To elucidate the genomic epidemiology and evolution of C. striatum in China. METHODS A total of 260 isolates from 2016 to 2018 were collected from three hospitals in three regions of China. Antibiotic sensitivity testing was performed on all isolates. Whole-genome sequencing was applied to all isolates to assess their genomic diversity and relationships and detect the presence of antimicrobial resistance genes (ARG) and ARG cassettes. FINDINGS Almost all isolates (96.2%, 250/260) showed multi-drug-resistance. Genome sequencing revealed four major lineages with lineage IV emerging as the epidemic lineage. Most of the diversity was developed in the last 6 years. Each hospital has its own predominant clones with potential spread between Hebei and Guangdong hospitals. Genomic analysis further revealed multiple antimicrobial resistance genes. CONCLUSIONS Our results suggested that four lineages of C. striatum have spread in parallel across China, causing persistent and extensive transmissions within hospitals. MDR C. striatum infection has become a national epidemic. Antibiotic-driven selection pressure may have played significant roles in forming persistent and predominant clones. Our data provide the basis for surveillance and prevention strategies to control the epidemic caused by MDR C. striatum.
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Affiliation(s)
- X Wang
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Changping, Beijing, 102206, China
| | - H Zhou
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Changping, Beijing, 102206, China
| | - P Du
- Beijing Key Laboratory of Emerging Infectious Diseases, Institute of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, 100015, China
| | - R Lan
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW, 2052, Australia
| | - D Chen
- Department of Laboratory Medicine, Beijing Hospital, National Center of Gerontology, Beijing, 100730, China
| | - A Dong
- University of Science and Technology Affiliated Hospital, Tangshan, 063000, China
| | - X Lin
- Guangzhou Panyu Central Hospital, Guangzhou, 510000, China
| | - X Qiu
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Changping, Beijing, 102206, China
| | - S Xu
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Changping, Beijing, 102206, China
| | - X Ji
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Changping, Beijing, 102206, China
| | - M Li
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Changping, Beijing, 102206, China
| | - X Hou
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Changping, Beijing, 102206, China
| | - L Sun
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Changping, Beijing, 102206, China
| | - D Li
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Changping, Beijing, 102206, China
| | - L Han
- Department of Medicine, Tibet University, Lhasa, 850000, China
| | - Z Li
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Changping, Beijing, 102206, China.
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16
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Jung J, Feldman R, Du P, Kong L. PIN2 Heterogeneity in Association of Use of Direct Acting Antivirals with Mortality Among Patients with Hepatitis C in the United States. Value Health Reg Issues 2020. [DOI: 10.1016/j.vhri.2020.07.249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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17
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Dubrot J, Lane-Reticker SK, Kessler E, Wolfe C, Mahapatra A, Du P, Manguso RT. Abstract 5866: SCAR (Selective CRISPR Antigen Removal) vector system expands cancer immunology discovery with in vivo functional genomics. Cancer Res 2020. [DOI: 10.1158/1538-7445.am2020-5866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
The ability to make rapid genetic alterations to tumor cells with CRISPR for screens and single-gene studies has been transformative for studying cancer biology. Recently, we and others have used CRISPR in murine tumor models in vivo to identify targets and resistance mechanisms for immunotherapy. However, the use of these techniques in immunocompetent mice is limited by endogenous immune recognition of CRISPR components such as Cas9. Here we report the design of a screening-compatible lentiviral vector system which allows selective CRISPR antigen removal (SCAR) from tumor cells before they are implanted in vivo. The SCAR system enables highly efficient genome engineering and reverses CD8+ T cell-mediated rejection of CRISPR modified tumor cells in vivo. Using this technology, we conducted a pooled, in vivo screen designed to probe tumor-immune interactions in the highly immunogenic CT26 colon carcinoma model and discovered that these tumors require intact interferon signaling to evade immune destruction. The SCAR system enables the study of tumor-immune interactions in any cancer model and can be more broadly applied to generate non-immunogenic lentivirally-engineered cells.
Citation Format: Juan Dubrot, Sarah Kate Lane-Reticker, Emily Kessler, Clara Wolfe, Animesh Mahapatra, Peter Du, Robert T. Manguso. SCAR (Selective CRISPR Antigen Removal) vector system expands cancer immunology discovery with in vivo functional genomics [abstract]. In: Proceedings of the Annual Meeting of the American Association for Cancer Research 2020; 2020 Apr 27-28 and Jun 22-24. Philadelphia (PA): AACR; Cancer Res 2020;80(16 Suppl):Abstract nr 5866.
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18
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Li H, Davis AA, Liu XR, Xie F, Gui XY, Chen YF, Zhang Q, Gerratana L, Zhang Y, Shah AN, Behdad A, Wehbe F, Huang Y, Yu JJ, Du P, Jia SD, Cristofanilli M. Cell-free DNA comparative analysis of hormone receptor-positive, first-line metastatic breast cancer genomic landscape in the United States and China. J Clin Oncol 2020. [DOI: 10.1200/jco.2020.38.15_suppl.1059] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
1059 Background: Metastatic breast cancer (MBC) is a heterogeneous disease associated with known somatic mutations of variable biological value in different subtypes. Furthermore, the clinical evolution of the disease demonstrates clonal evolution resulting in disease resistance more accurately detected using blood-based sequencing. Few studies have explored differences in genomic features of tumors across populations. Here, we performed circulating tumor DNA (ctDNA) sequencing to compare the genomic landscape of patients with hormone-receptor positive MBC at time of first recurrence or de-novo metastatic diagnosis in the United States (US) and China. Methods: Twenty-three US patients from Northwestern University and 65 Chinese patients from Peking University had ctDNA sequencing from plasma performed using the harmonized CLIA-certified, 152-gene PredicineCARE assay in laboratories in the US and China, respectively. The data analysis was conducted in China. Institutional Review Boards at each site approved the study. Fisher’s exact test was performed to compare mutational frequencies across populations. Results: Median age of patients at MBC diagnosis was 51 in the US cohort and 55 in the Chinese cohort. 87% of US patients and 82% of Chinese patients had received prior therapy for primary breast cancer, including endocrine therapy. Mutations were detected in 17 of 23 (74%) US patients and 59 of 65 (91%) Chinese patients. CNAs were observed in 57% of US patients and 58% of Chinese patients. The most common mutations detected in US patients were TP53 (26%), PIK3CA (22%), AKT1 (22%), CDH1 (17%), PTEN (13%), and ESR1 (9%) vs. PIK3CA (46%), TP53 (35%), ESR1 (12%), and BRCA2 (11%) in Chinese patients. Frequency of AKT1 and CDH1 mutations were significantly higher in the US population (P < 0.05), while PIK3CA mutations were higher in the Chinese population (P < 0.05). CNA gains in CCND3 and CDK4 were significantly higher in the US cohort, and FGFR1 was significantly more common in the Chinese cohort (all P < 0.05). Conclusions: To our knowledge, this is a first cross-regional comparison study in HR+ MBC patients in the US and China using a harmonized cfDNA NGS platform. At a population level, there were notable differences observed in somatic variants in two cohorts. Future sequencing efforts and clinical trials should include patients of diverse ethnic backgrounds to explore the impact of differences in genomic landscape on probability of benefit from treatments. A larger validation cohort is required to confirm these findings.
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Affiliation(s)
- Huiping Li
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Breast Oncology, Peking University Cancer Hospital & Institute, Beijing, China
| | - Andrew A. Davis
- Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL
| | - Xiao-ran Liu
- Peking University Cancer Hospital and Institute, Beijing, China
| | - Feng Xie
- Huidu (Shanghai) Medical Sciences, Ltd., Shan-Hai, China
| | - Xin-Yu Gui
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Breast Oncology, Peking University Cancer Hospital & Institute, Beijing, China
| | - Yi-Fei Chen
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Breast Oncology, Peking University Cancer Hospital & Institute, Beijing, China
| | - Qiang Zhang
- Northwestern University, Department of Medicine, Division of Hematology/Oncology, Lurie Cancer Center, Chicago, IL
| | | | - Youbin Zhang
- Northwestern University, Department of Medicine, Division of Hematology/Oncology, Chicago, IL
| | | | - Amir Behdad
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Firas Wehbe
- Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Yong Huang
- Huidu (Shanghai) Medical Sciences, Ltd., Shang Hai, China
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19
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Ni WW, Zhang QM, Zhang X, Li Y, Yu SS, Wu HY, Chen Z, Li AL, Du P, Li C. Modulation effect of Lactobacillus acidophilus KLDS 1.0738 on gut microbiota and TLR4 expression in β-lactoglobulin-induced allergic mice model. Allergol Immunopathol (Madr) 2020; 48:149-157. [PMID: 31477403 DOI: 10.1016/j.aller.2019.06.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [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: 04/03/2019] [Revised: 05/24/2019] [Accepted: 06/03/2019] [Indexed: 12/26/2022]
Abstract
OBJECTIVES β-lactoglobulin (β-Lg)-sensitized mice model was employed to investigate the correlation between Lactobacillus acidophilus KLDS 1.0738 (Lap KLDS 1.0738) modulating gut microbiota and inducting Toll-like receptors (TLRs) expression. METHODS The alterations of mice fecal microbiota were analyzed by 16S rRNA gene sequencing. The serum cytokines production and TLR4/NF-κB mRNA expression in the colon tissues were measured by ELISA kit and quantitative RT-PCR, respectively. RESULTS The results showed that Lap KLDS 1.0738 pretreatment attenuated β-Lg-induced hypersensitivity, accompanied with a diminished expression of TLR4/NF-κB signaling. Moreover, oral administration of Lap KLDS 1.0738 improved the richness and diversity of fecal microbiota, which was characterized by fewer Proteobacteria phylum and Helicobacteraceae family, and higher Firmicutes phylum and Lachnospiraceae family than allergic group. Notably, TLR4/NF-κB expression was positively correlated with the family of Helicobacteraceae in allergic group, but negatively correlated with the family of Lachnospiraceae, Ruminococcaceae and anti-inflammatory cytokines level. A significant positive correlation was observed between TLR4/NF-κB expression and the production of histamine, total IgE and pro-inflammatory cytokines. CONCLUSIONS Intake of Lap KLDS 1.0738 can influence the gut bacterial composition, which might result in recognizing TLRs signaling so as to inhibit allergic response.
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Affiliation(s)
- W-W Ni
- Key Laboratory of Dairy Science, Food Science College, Northeast Agriculture University, Northeast Agriculture University, Harbin, China
| | - Q-M Zhang
- Key Laboratory of Dairy Science, Food Science College, Northeast Agriculture University, Northeast Agriculture University, Harbin, China
| | - X Zhang
- Key Laboratory of Dairy Science, Food Science College, Northeast Agriculture University, Northeast Agriculture University, Harbin, China
| | - Y Li
- Key Laboratory of Dairy Science, Food Science College, Northeast Agriculture University, Northeast Agriculture University, Harbin, China
| | - S-S Yu
- Key Laboratory of Dairy Science, Food Science College, Northeast Agriculture University, Northeast Agriculture University, Harbin, China
| | - H-Y Wu
- Key Laboratory of Dairy Science, Food Science College, Northeast Agriculture University, Northeast Agriculture University, Harbin, China
| | - Z Chen
- Key Laboratory of Dairy Science, Food Science College, Northeast Agriculture University, Northeast Agriculture University, Harbin, China
| | - A-L Li
- Key Laboratory of Dairy Science, Food Science College, Northeast Agriculture University, Northeast Agriculture University, Harbin, China.
| | - P Du
- Key Laboratory of Dairy Science, Food Science College, Northeast Agriculture University, Northeast Agriculture University, Harbin, China.
| | - C Li
- Key Laboratory of Dairy Science, Food Science College, Northeast Agriculture University, Northeast Agriculture University, Harbin, China
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20
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Shi WY, Guo MH, Du P, Zhang Y, Wang JN, Li TT, Lyu YB, Zhou JH, Duan J, Kang Q, Shi XM. [Association of sleep with anxiety in the elderly aged 60 years and older in China]. Zhonghua Liu Xing Bing Xue Za Zhi 2020; 41:13-19. [PMID: 32062936 DOI: 10.3760/cma.j.issn.0254-6450.2020.01.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the relationship of sleep duration and sleep quality with anxiety in the elderly aged 60 years and older in China. Methods: The elderly aged 60 years and older were selected from the China Short-term Health Effects of Air Pollution Study conducted between July 18, 2017 and February 7, 2018. Multivariate logistic regression models were used to analyze the association of sleep duration and sleep quality with anxiety. Results: A total of 3 897 elderly aged 60 years and older were included in the study. The age of the elderly was (73.4±8.0) years old. Among the elderly surveyed, 6.5% were defined with anxiety, and 18.7% reported poor sleep quality. Multivariate logistic regression models showed shorter sleep duration was the risk factor for anxiety in the elderly that after adjusting for factors such as general demographics, socioeconomic factors, lifestyle, health status, social support and ambient fine particulates exposure. Compared with the elderly with 7 hours of sleep duration daily, the OR (95%CI) of anxiety for those with sleep duration ≤ 6 hours was 2.09 (1.49-2.93). Compared with those with good sleep quality, the OR (95%CI) of anxiety for those with poor sleep quality was 5.12 (3.88-6.77). We also found statistically significant correlations of the scores of subscales of Pittsburgh sleep quality index with anxiety, in which the effects of sleep disturbance, subjective sleep quality and daytime dysfunction scores were most obvious, the ORs (95%CI) were 4.63 (3.55-6.04), 2.75 (2.33-3.23) and 2.50 (2.19-2.86), respectively. Subgroup analysis showed that the association of sleep duration and sleep quality with anxiety was more obvious in males and in those aged <80 years. Conclusion: Shorter sleep duration and poor sleep quality are associated with anxiety in the elderly in China.
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Affiliation(s)
- W Y Shi
- National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - M H Guo
- National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China; Department of Epidemiology and Biostatistics, School of Public Health, Jilin University, Changchun 130021, China
| | - P Du
- National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Y Zhang
- National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - J N Wang
- National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - T T Li
- National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Y B Lyu
- National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - J H Zhou
- National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - J Duan
- National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China; Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei 230032, China
| | - Q Kang
- National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China; Department of Epidemiology and Biostatistics, School of Public Health, Jilin University, Changchun 130021, China
| | - X M Shi
- National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
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21
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Kwan EM, Fettke H, Bukczynska P, Ng N, Hauser C, Graham LJK, Mahon KL, Dai C, Xie F, Wang X, Zhao Z, Zhou K, Du P, Yu J, Jia S, Tan W, Horvath L, Kohli M, Azad A. Plasma cell-free DNA (cfDNA) profiling of copy number variation (CNV) to identify poor prognostic biomarkers in metastatic castration-resistant prostate cancer (mCRPC). J Clin Oncol 2020. [DOI: 10.1200/jco.2020.38.6_suppl.176] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
176 Background: Multiple tumour tissue studies have demonstrated the prognostic utility of CNVs in mCRPC. However, accurate assessment of CNVs in plasma cfDNA remains challenging, and prognostic significance has not been well characterized. Using a large customized panel, we correlated plasma CNVs with clinical outcomes in a contemporary cohort of mCRPC patients. Methods: Deep targeted sequencing was performed using a 180-gene cfDNA panel (Predicine) in 56 patients commencing AR pathway inhibitors (enzalutamide or abiraterone; n = 34) or taxane chemotherapy (n = 22) at two Australian institutions. Kaplan-Meier estimates and Cox proportional-hazards models were used to correlate CNVs with progression-free survival (PFS) and overall survival (OS). Significant results were validated in an independent cohort (Mayo Clinic, n = 144). Results: Median follow-up was 19.4 months (mo; IQR 11.3-31.9). The most common CNVs in the Australian cohort are shown (Table). OS was significantly decreased in patients with PI3KCA gain (median 21.7 mo vs 6.6 mo, p < 0.0001), PTEN loss (24.8 mo vs 11.7 mo, p = 0.0019) and AR gain (21.7 mo vs 12.0 mo, p = 0.0083). Furthermore, all three alterations independently predicted for poor survival in multivariable analyses (MVA; Table). Findings in the independent cohort showed similar OS results in MVA: PIK3CA gain (HR 2.0, p = 0.07), PTEN loss (HR 1.7, p = 0.08) and AR gain (HR 1.7, p = 0.03). Conclusions: Sequencing of plasma cfDNA revealed that PTEN loss, and PIK3CA and AR gain are associated with inferior clinical outcomes in patients commencing contemporary systemic treatment. These data support therapeutic strategies co-targeting the PI3K and AR pathways in mCRPC.[Table: see text]
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Affiliation(s)
| | - Heidi Fettke
- Department of Medicine, School of Clinical Sciences, Monash University, Melbourne, Australia
| | | | - Nicole Ng
- Walter and Eliza Hall Institute of Medical Research, Melbourne, Australia
| | - Christine Hauser
- Cancer Research, Peter MacCallum Cancer Centre, Melbourne, Australia
| | | | | | | | | | | | | | | | | | | | | | | | | | | | - Arun Azad
- Peter MacCallum Cancer Centre, Melbourne, Australia
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Abstract
Background: The content and accessibility of foot and ankle fellowship websites impact applicants and fellowship programs. This study aimed to evaluate the accessibility provided via the American Orthopaedic Foot & Ankle Society (AOFAS) websites and individual websites. Methods: The AOFAS website was used to identify existing foot and ankle fellowship programs. The database information was reviewed for links to fellowship program websites, which was corroborated through a Google search for accessibility. Information from fellowship program websites and the AOFAS was analyzed for the presence of recruitment and educational content, and this analysis was compared to previously reported metrics. Results: Forty-eight orthopedic foot and ankle fellowship programs were identified. The AOFAS database featured direct links to 19 (40%) fellowship websites with the Google search providing direct links to 35 (73%) websites. Foot and ankle fellowship information markedly improved in domains of Salary/Benefits (+233%), Rotations/Curriculum (+199%), and Faculty Listing (+67%), but there was a reduction in available content in the domains of Operative Experience (–79%), Office/Clinic information (–78%), and Didactics (–39%) compared with the lone existing study. Conclusion: There continues to be variability between foot and ankle fellowship websites and the AOFAS website regarding program content and descriptions. Some information is more readily available, but other domains have less information now than in previously reported research.
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Affiliation(s)
- Ansab Khwaja
- Department of Orthopedic Surgery, University of Arizona, Tucson, Arizona, USA
| | - Peter Du
- Department of Orthopedic Surgery, University of Arizona, Tucson, Arizona, USA
| | - Nathan Sherman
- Department of Orthopedic Surgery, University of Arizona, Tucson, Arizona, USA
| | - Lisa Truchan
- Department of Orthopedic Surgery, University of Arizona, Tucson, Arizona, USA
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23
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Du P, Wang SY, Zheng PF, Mao J, Hu H, Cheng ZB. Comparison of overall survival and quality of life between patients undergoing anal reconstruction and patients undergoing traditional lower abdominal stoma after radical resection. Clin Transl Oncol 2019; 21:1390-1397. [PMID: 31006088 DOI: 10.1007/s12094-019-02106-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [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: 02/28/2019] [Accepted: 03/18/2019] [Indexed: 02/08/2023]
Abstract
BACKGROUND Miles procedure is often necessary for patients with low rectal carcinoma. However, this operation often affects the quality of life of patients, to evaluate the advantages of improved operation (anal reconstruction), the quality of life and survival between patients undergoing anal reconstruction and patients undergoing traditional lower abdominal stoma after radical resection were analyzed. METHODS The clinical data of 43 patients with low situated rectal carcinoma were retrospectively analyzed. 23 patients with left lower abdominal stoma after radical resection (Miles procedure) were divided into group A, and 20 patients with reconstruction of the anus in situ after radical resection were in group B. All patients were investigated by the European Organization for Research and Treatment of Cancer (EORTC) QLQ-C30 and QLQ-CR38 questionnaire, the clinical data are recorded. Independent sample T test was used to analyze the difference in quality of life between group A and group B at 3, 6, and 12 months after surgery, and Kaplan-Meier was used to compare the difference in overall survival between group A and group B. RESULTS The results of T test showed that there were statistical significance in global health status and physical functioning between group A and group B at 3 and 6 months, but no statistical significance at 12 months (P = 0.024, P = 0.019, P = 0.115 for global health status; P = 0.004, P = 0.006, P = 0.065 for physical functioning, respectively). Emotional functioning and social functioning were also statistically significant between group A and group B at 3, 6, and 12 months (P = 0.041, P = 0.040, P = 0.034 for Emotional functioning; P = 0.020, P = 0.009, P = 0.032 for social functioning, respectively). This study also found that there was no statistical significance in body image and sexual functioning between group A and group B at 3 months, but there was statistical significance at 6 and 12 months(P = 0.098, P = 0.035, P = 0.045 for body image; P = 0.110, P = 0.048, P = 0.047 for sexual functioning, respectively). There were statistically significant about sexual enjoyment and defecation problems at 3, 6, and 12 months (P = 0.023, P = 0.028, P = 0.050 for sexual enjoyment; P = 0.013, P = 0.011, P = 0.050 for defecation problems, respectively).The results of Kaplan-Meier showed that the overall survival (OS) between group A and group B was not statistically significant (χ2 = 0.600, P = 0.439). CONCLUSIONS There was no difference in survival time between group A and group B, but compared with the patients with left lower abdominal stoma(group A), the quality of life was better in patients with reconstruction of the anus in situ (group B). It is significant to improve the traditional lower abdominal stoma operation.
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Affiliation(s)
- P Du
- The Department of General Surgery, Second Hospital of Lanzhou University, No. 82, Cuiying Gate, Chengguan District, Lanzhou, 730030, Gansu, China
| | - S-Y Wang
- Second Clinical Medical College, Lanzhou University, Lanzhou, 730030, Gansu, China
| | - P-F Zheng
- The Department of General Surgery, Second Hospital of Lanzhou University, No. 82, Cuiying Gate, Chengguan District, Lanzhou, 730030, Gansu, China
| | - J Mao
- The Department of General Surgery, Second Hospital of Lanzhou University, No. 82, Cuiying Gate, Chengguan District, Lanzhou, 730030, Gansu, China
| | - H Hu
- Second Clinical Medical College, Lanzhou University, Lanzhou, 730030, Gansu, China
| | - Z-B Cheng
- The Department of General Surgery, Second Hospital of Lanzhou University, No. 82, Cuiying Gate, Chengguan District, Lanzhou, 730030, Gansu, China.
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24
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Kohli M, Yadav S, Tan W, Riaz IB, Zheng T, Wang A, Montesinos C, Wong C, Du P, Jia S, Yu J. Plasma cell-free DNA-based prognosis in metastatic hormone sensitive prostate cancer. J Clin Oncol 2019. [DOI: 10.1200/jco.2019.37.7_suppl.242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
242 Background: We evaluated plasma cell free based genomic aberrations for prognosticating survival of newly diagnosed metastatic hormone sensitive prostate cancer (mHSPC) patients (pts). Methods: Plasma was collected from mHSPC pts enrolled between 2009-2014. Platelet poor plasma (PPP) fractions were processed uniformly and cell free DNA (cfDNA) extracted using Qiagen kits. Pts were followed after initiating hormonal therapy until death. Next Gen Sequencing (NGS) of cfDNA was performed using Illumina HiSeq X for a preselected panel of 128 genes (PredicineDDR-77 cancer driver genes; 29 genes in BRCA-FA homologous recombination deficiency (HRD) pathway; 22 DNA damage repair pathway genes). Statistical analyses of plasma genome based aberrations with overall survival (OS) were performed in R 3.5.1. Cox proportional-hazard models were used for survival analysis. Results: An average of 2.5 ml PPP from 99 pts yielded a median of 10.5 ng (range: 2.8-702) cfDNA per sample. 15/99 pt samples with a yield < 5 ng were excluded from sequencing; 9/99 samples failed NGS. Median follow-up time was 80.2 months (mths) (Range: 74.7, 87]); median OS was 69.1 mths (range: 54,NR). 29 pts with full NGS data had high volume metastatic disease. cfDNA yield correlated with metastatic volume (P = 0.01). Univariate analysis revealed both variables prognostic for OS (Metastatic volume: log-rank P=0.01, HR=2.1, 95% CI: 1.1-3.8; cfDNA yield: P =0.04, HR = 1.3, 95% CI: 1.03-1.7). Multivariate regression showed prognostic value of cfDNA yield remained independent of metastatic volume (P = 0.03, HR = 1.34, 95% CI: 1.02-1.76). 54/67 samples with NGS data had at least one mutation/copy number variation detected. Top mutated genes included TP53 (N=18), ATM (N=9), CHEK2 (N=7), FANCM (N=6), RB1 (N=6), BRCA2 (N=5), PIK3CA (N=4) and 37/67 pts harbored 1≥ variant in HDR pathways. These pts had a shorter survival (median: 58.6 mths) (P=0.04, HR= 2.28, 95% CI: 1.01-5.18) and pts with ATM mutations did significantly worse (median survival: 47.4 mths) (HR=4.03, P=0.0005, 95% CI: 1.73-9.37). Conclusions: Plasma cfDNA yield is prognostic for survival in newly diagnosed mHSPC state and presence of HRD pathway genomic aberrations in plasma cfDNA are associated with poor survival.
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25
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Gao J, Du P, Zhang Q, Shen X, Chiang FK, Wen Y, Lin X, Liu X, Qiu H. Platinum single atoms/clusters stabilized in transition metal oxides for enhanced electrocatalysis. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2018.11.200] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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26
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Tan M, Zhang S, Zhao Z, Wang A, Cheung D, Du P, Yu J, Jia S, Guo C, Tong Y, Zhou K. Circulating tumor DNA and RNA as an exploratory biomarker to evaluate GT0918 in a phase I/II clinical trial in mCRPC patients. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy269.162] [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: 11/14/2022] Open
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27
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Du P, Lai YH, Yao DS, Lu Y, Chen JY, Ding N. [Lentivirus media miR-1246 knockdown inhibits tumor growth and promotes apoptosis of SiHa cells]. Zhonghua Fu Chan Ke Za Zhi 2018; 53:481-486. [PMID: 30078258 DOI: 10.3760/cma.j.issn.0529-567x.2018.07.007] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To study the effect of lentivirus-mediated microRNA (miR) -1246 RNA interference (RNAi) on biological characteristics and behaviors in cervical cancer cells as well as to identify the downstream signaling pathways affected. Methods: MiR-1246 specific cDNA was synthesized and cloned into the recombinant lentiviral vector (LV-miR-1246-inhibitor) . The SiHa cells were devided into three groups: no viral infection (negative control, NC) , infection with control virus (LV-NC) , and infection with miR-1246-inhibitor virus (LV-miR-1246-inhibitor) . The expression of the miR-1246 was detected by reverse transcription (RT) -PCR. Cell growth was analyzed by cell counting kit 8 (CCK-8) assay. The invasion was dectected by transwell matrige gel. Cell apoptosis was detected by flow cytometer. The growth of xenograft tumors was also investigated. Expression of thrombospondin-2 (THBS2) , matrix metalloproteinase (MMP) 2, 9 were also evaluated in the cells. Results: (1) The expression level of miR-1246 in SiHa cells (0.11±0.13) was significantly lower in group LV-miR-1246-inhibitor than those in the group LV-NC and the group NC (1.14±0.86 and 1.30±0.73, respectively; P<0.01) . (2) The proliferation of SiHa was also markedly suppressed in CCK-8 at 96 hours (P<0.01) . (3) The number of group LV-miR-1246-inhibitor was significantly less than those in the LV-NC and NC groups in transwell invasion assay (71±4, 162±5 and 188±5, respectively; P<0.01) . (4) The apoptosis rate of SiHa cells in the group LV-miR-1246-inhibitor [ (16.10±3.37) %] was significantly lower than those of group LV-NC and group NC [ (5.67±0.89) % and (1.78±0.08) %,P<0.01]. (5) The tumor volume in the nude mice group LV-miR-1246-inhibitor [ (287±59) mm(3)] was significantly lower than those in the LV-NC and NC groups [ (571±137) and (657±144) mm(3), respectively; P<0.01]. (6) Compared with the LV-NC group and the NC group, THBS2 protein expression in the tumor tissue of the nude mice in the group LV-miR-1246-inhibitor was significantly increased (P<0.05) , while the expression levels of MMP-2 and MMP-9 protein were significantly decreased (P<0.01) . Conclusion: These results suggest that miR-1246 functions during cervical cancer pathogenesis and tumor formation via the THBS2, MMP signaling pathway.
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Affiliation(s)
- P Du
- Department of Gynecologic Oncology, the Affiliated Tumor Hospital of Guangxi Medical University, Nanning 530021, China
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28
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Li H, Yu J, Liu XR, Wang A, Zhao Z, Cheung T, Shi WJ, Zhang Y, Zhang P, Tan MY, Du P, Kong WY, Liu YX, Zhang JY, Yan Y, Jia S. Detection, dynamic monitoring, and resistance mechanism exploration of genomic alterations in circulating cell free tumor DNA (ctDNA) in Chinese metastatic breast cancer (mBC). J Clin Oncol 2018. [DOI: 10.1200/jco.2018.36.15_suppl.1080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Huiping Li
- Peking University Cancer Hospital and Institute, Beijing, China
| | | | - Xiao-Ran Liu
- Peking University Cancer Hospital and Institute, Beijing, China
| | | | | | | | | | | | | | | | | | - Wei-yao Kong
- Peking University Cancer Hospital and Institute, Beijing, China
| | - Ya-Xin Liu
- Department of breast oncology, Peking University Cancer Hospital, Beijing, China
| | - Jia-yang Zhang
- Peking University Cancer Hospital and Institute, Beijing, China
| | - Ying Yan
- Beijing Cancer Hospital, Beijing, China
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29
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Vather R, O'Grady G, Lin AY, Du P, Wells CI, Rowbotham D, Arkwright J, Cheng LK, Dinning PG, Bissett IP. Hyperactive cyclic motor activity in the distal colon after colonic surgery as defined by high-resolution colonic manometry. Br J Surg 2018; 105:907-917. [PMID: 29656582 DOI: 10.1002/bjs.10808] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 10/18/2017] [Accepted: 11/21/2017] [Indexed: 01/10/2023]
Abstract
BACKGROUND Recovery after colonic surgery is invariably delayed by disturbed gut motility. It is commonly assumed that colonic motility becomes quiescent after surgery, but this hypothesis has not been evaluated rigorously. This study quantified colonic motility through the early postoperative period using high-resolution colonic manometry. METHODS Fibre-optic colonic manometry was performed continuously before, during and after surgery in the left colon and rectum of patients undergoing right hemicolectomy, and in healthy controls. Motor events were characterized by pattern, frequency, direction, velocity, amplitude and distance propagated. RESULTS Eight patients undergoing hemicolectomy and nine healthy controls were included in the study. Colonic motility became markedly hyperactive in all operated patients, consistently dominated by cyclic motor patterns. Onset of cyclic motor patterns began to a minor extent before operation, occurring with increasing intensity nearer the time of surgery; the mean(s.d.) active duration was 12(7) per cent over 3 h before operation and 43(17) per cent within 1 h before surgery (P = 0.024); in fasted controls it was 2(4) per cent (P < 0·001). After surgery, cyclic motor patterns increased markedly in extent and intensity, becoming nearly continuous (active duration 94(13) per cent; P < 0·001), with peak frequency 2-4 cycles per min in the sigmoid colon. This postoperative cyclic pattern was substantially more prominent than in non-operative controls, including in the fed state (active duration 27(20) per cent; P < 0·001), and also showed higher antegrade velocity (P < 0·001). CONCLUSION Distal gut motility becomes markedly hyperactive with colonic surgery, dominated by cyclic motor patterns. This hyperactivity likely represents a novel pathophysiological aspect of the surgical stress response. Hyperactive motility may contribute to gut dysfunction after surgery, potentially offering a new therapeutic target to enhance recovery.
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Affiliation(s)
- R Vather
- Department of Surgery, University of Auckland, Auckland, New Zealand
| | - G O'Grady
- Department of Surgery, University of Auckland, Auckland, New Zealand.,Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand
| | - A Y Lin
- Department of Surgery, University of Auckland, Auckland, New Zealand
| | - P Du
- Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand
| | - C I Wells
- Department of Surgery, University of Auckland, Auckland, New Zealand
| | - D Rowbotham
- Department of Gastroenterology, Auckland District Health Board, Auckland, New Zealand
| | - J Arkwright
- Department of Computer Science, Engineering and Mathematics, Flinders University, Adelaide, South Australia, Australia
| | - L K Cheng
- Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand
| | - P G Dinning
- Human Physiology, Flinders University, Adelaide, South Australia, Australia.,Department of Gastroenterology and Surgery, Flinders Medical Centre, Adelaide, South Australia, Australia
| | - I P Bissett
- Department of Surgery, University of Auckland, Auckland, New Zealand
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30
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Du P, Chen K, Patterson D, Ranade S. The pediatric ankle and foot: a review of common injuries in the pediatric athlete and their treatments. Ann Joint 2018. [DOI: 10.21037/aoj.2018.02.02] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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31
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Wang THH, Du P, Angeli TR, Paskaranandavadivel N, Erickson JC, Abell TL, Cheng LK, O'Grady G. Relationships between gastric slow wave frequency, velocity, and extracellular amplitude studied by a joint experimental-theoretical approach. Neurogastroenterol Motil 2018; 30. [PMID: 28695661 DOI: 10.1111/nmo.13152] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Accepted: 06/08/2017] [Indexed: 02/08/2023]
Abstract
BACKGROUND Gastric slow wave dysrhythmias are accompanied by deviations in frequency, velocity, and extracellular amplitude, but the inherent association between these parameters in normal activity still requires clarification. This study quantified these associations using a joint experimental-theoretical approach. METHODS Gastric pacing was conducted in pigs with simultaneous high-resolution slow wave mapping (32-256 electrodes; 4-7.6 mm spacing). Relationships between period, velocity, and amplitude were quantified and correlated for each wavefront. Human data from two existing mapping control cohorts were analyzed to extract and correlate these same parameters. A validated biophysically based ICC model was also applied in silico to quantify velocity-period relationships during entrainment simulations and velocity-amplitude relationships from membrane potential equations. KEY RESULTS Porcine pacing studies identified positive correlations for velocity-period (0.13 mm s-1 per 1 s, r2 =.63, P<.001) and amplitude-velocity (74 μV per 1 mm s-1 , r2 =.21, P=.002). In humans, positive correlations were also quantified for velocity-period (corpus: 0.11 mm s-1 per 1 s, r2 =.16, P<.001; antrum: 0.23 mm s-1 per 1 s, r2 =.55; P<.001), and amplitude-velocity (94 μV per 1 mm s-1 , r2 =.56; P<.001). Entrainment simulations matched the experimental velocity-period relationships and demonstrated dependence on the slow wave recovery phase. Simulated membrane potential relationships were close to these experimental results (100 μV per 1 mm s-1 ). CONCLUSIONS AND INFERENCES These data quantify the relationships between slow wave frequency, velocity, and extracellular amplitude. The results from both human and porcine studies were in keeping with biophysical models, demonstrating concordance with ICC biophysics. These relationships are important in the regulation of gastric motility and will help to guide interpretations of dysrhythmias.
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Affiliation(s)
- T H-H Wang
- Department of Surgery, University of Auckland, Auckland, New Zealand
| | - P Du
- Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand
| | - T R Angeli
- Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand
| | - N Paskaranandavadivel
- Department of Surgery, University of Auckland, Auckland, New Zealand.,Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand
| | - J C Erickson
- Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand.,Department of Physics-Engineering, Washington & Lee University, Lexington, VA, USA
| | - T L Abell
- Division of Gastroenterology, University of Louisville, Louisville, KY, USA
| | - L K Cheng
- Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand.,Department of Surgery, Vanderbilt University, Nashville, TN, USA
| | - G O'Grady
- Department of Surgery, University of Auckland, Auckland, New Zealand.,Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand
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32
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Paskaranandavadivel N, Cheng LK, Du P, Rogers JM, O'Grady G. High-resolution mapping of gastric slow-wave recovery profiles: biophysical model, methodology, and demonstration of applications. Am J Physiol Gastrointest Liver Physiol 2017; 313:G265-G276. [PMID: 28546283 DOI: 10.1152/ajpgi.00127.2017] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Revised: 05/24/2017] [Accepted: 05/24/2017] [Indexed: 01/31/2023]
Abstract
Slow waves play a central role in coordinating gastric motor activity. High-resolution mapping of extracellular potentials from the stomach provides spatiotemporal detail on normal and dysrhythmic slow-wave patterns. All mapping studies to date have focused exclusively on tissue activation; however, the recovery phase contains vital information on repolarization heterogeneity, the excitable gap, and refractory tail interactions but has not been investigated. Here, we report a method to identify the recovery phase in slow-wave mapping data. We first developed a mathematical model of unipolar extracellular potentials that result from slow-wave propagation. These simulations showed that tissue repolarization in such a signal is defined by the steepest upstroke beyond the activation phase (activation was defined by accepted convention as the steepest downstroke). Next, we mapped slow-wave propagation in anesthetized pigs by recording unipolar extracellular potentials from a high-resolution array of electrodes on the serosal surface. Following the simulation result, a wavelet transform technique was applied to detect repolarization in each signal by finding the maximum positive slope beyond activation. Activation-recovery (ARi) and recovery-activation (RAi) intervals were then computed. We hypothesized that these measurements of recovery profile would differ for slow waves recorded during normal and spatially dysrhythmic propagation. We found that the ARi of normal activity was greater than dysrhythmic activity (5.1 ± 0.8 vs. 3.8 ± 0.7 s; P < 0.05), whereas RAi was lower (9.7 ± 1.3 vs. 12.2 ± 2.5 s; P < 0.05). During normal propagation, RAi and ARi were linearly related with negative unit slope indicating entrainment of the entire mapped region. This relationship was weakened during dysrhythmia (slope: -0.96 ± 0.2 vs -0.71 ± 0.3; P < 0.05).NEW & NOTEWORTHY The theoretical basis of the extracellular gastric slow-wave recovery phase was defined using mathematical modeling. A novel technique utilizing the wavelet transform was developed and validated to detect the extracellular slow-wave recovery phase. In dysrhythmic wavefronts, the activation-to-recovery interval (ARi) was shorter and recovery-to-activation interval (RAi) was longer compared with normal wavefronts. During normal activation, RAi vs. ARi had a slope of -1, whereas the weakening of the slope indicated a dysrhythmic propagation.
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Affiliation(s)
- N Paskaranandavadivel
- Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand; .,Department of Surgery, University of Auckland, Auckland, New Zealand
| | - L K Cheng
- Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand.,Department of Surgery, Vanderbilt University, Nashville, Tennessee; and
| | - P Du
- Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand
| | - J M Rogers
- Department of Biomedical Engineering, University of Alabama at Birmingham, Birmingham, Alabama
| | - G O'Grady
- Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand.,Department of Surgery, University of Auckland, Auckland, New Zealand
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Dong B, Ge N, Xiang D, Du P. FRAILTY RESEARCH IN CHINA AND ROLE OF FRAILTY ASSESSMENT IN HOME CARE. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.3835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Affiliation(s)
- B. Dong
- The Center of Gerontology and Geriatrics at West China Hospital, Sichuan University, Chengdu, China
| | - N. Ge
- The Center of Gerontology and Geriatrics at West China Hospital, Sichuan University, Chengdu, China
| | - D. Xiang
- The Center of Gerontology and Geriatrics at West China Hospital, Sichuan University, Chengdu, China
| | - P. Du
- Renmin University of China, Beijing, China
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34
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Du P. CHALLENGES IN POPULATION AGING AND POLICY PRIORITIES IN CHINA. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.1097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- P. Du
- Institute of Gerontology, Renmin University of China, Beijing, Beijing, China
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35
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Zhang W, Du P. SOCIAL SUPPORT OF CHINESE OLD ADULTS—FINDINGS FROM THE CHINESE LONGITUDINAL AGEING SOCIAL SURVEY. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.4733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- W. Zhang
- Renmin University of China, Beijing, China
| | - P. Du
- Institute of Gerontology, Renmin University of China, China
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36
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Hou S, Du P, Wang P, Wang C, Liu P, Liu H. Significance of MNK1 in prognostic prediction and chemotherapy development of epithelial ovarian cancer. Clin Transl Oncol 2017; 19:1107-1116. [PMID: 28332091 DOI: 10.1007/s12094-017-1646-x] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Accepted: 03/13/2017] [Indexed: 12/31/2022]
Abstract
BACKGROUND Ovarian cancer is the most lethal gynecologic malignancy worldwide with surgery as the only curative treatment. Long-term overall survival (OS) of ovarian cancer is far from satisfactory, even though significant improvement has been made in post-operative chemotherapy. One of the most important death cause is the chemoresistance due to consecutive chemotherapy. Therefore, understanding the molecular mechanisms involved in ovarian cancer development and identification of novel therapeutic targets are urgently required. METHODS Immunohistochemical (IHC) staining was used to explore the expression pattern of mitogen-activated protein kinase (MAPK)-interacting kinase 1 (MNK1) in tumor tissues from 138 epithelial ovarian cancer (EOC) patients. Clinicopathological data were subjected to Kaplan-Meier survival and Cox multivariate analyses to evaluate the prognostic value of MNK1 in EOC. Overexpression and silencing procedures were performed on OVCAR-5 cells to investigate the mechanisms of MNK1 in regulating EOC development. The anti-tumor effects of CGP57380, a specific MNK inhibitor, were examined by cell viability assay. RESULTS Higher MNK1 expression showed significant relationship with advanced FIGO stage and positive lymph node metastasis of EOC. Univariate and multivariate analyses revealed that MNK1 was an independent prognostic factor for OS of EOC patients. In vitro study demonstrated that MNK1 can promote cell proliferation through regulating the phosphorylation level of eukaryotic initiation factor 4E. In addition, inhibition of MNK1 by CGP57380 significantly down-regulated the OVCAR-5 cell viability. CONCLUSION High MNK1 expression in EOC tissues indicates poor clinical outcomes, and MNK1 can act as a potential target for novel chemotherapy development towards EOC.
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Affiliation(s)
- S Hou
- Department of Pharmacology, Yidu Central Hospital of Weifang Affiliated to Weifang Medical University, Weifang, 261000, Shandong, China
| | - P Du
- Department of Plastic Surgery, Yidu Central Hospital of Weifang Affiliated to Weifang Medical University, Weifang, 261000, Shandong, China
| | - P Wang
- Department of Pain Treatment, Qingzhou Hospital of Traditional Chinese Medicine, Weifang, 261000, Shandong, China
| | - C Wang
- Department of Reproductive Center, Affiliated Hospital of North Sichuan Medical College, Nanchong, 637000, Sichuan, China
| | - P Liu
- Department of Burn and Plastic Surgery, Qilu Hospital Affiliated to Shandong University, 107 Wenhua Xi Road, Jinan, 250012, Shandong, China.
| | - H Liu
- Department of General Surgery, Qilu Hospital Affiliated to Shandong University, 107 Wenhua Xi Road, Jinan, 250012, Shandong, China.
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37
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Du P, O'Grady G, Paskaranandavadivel N, Tang SJ, Abell T, Cheng LK. Reply. Exp Physiol 2017; 102:135. [DOI: 10.1113/ep086141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- P. Du
- University of Auckland; Auckland New Zealand
| | - G. O'Grady
- University of Auckland; Auckland New Zealand
| | | | - S. J. Tang
- University of Mississippi Medical Center; Jackson MS USA
| | - T. Abell
- University of Louisville; Louisville KY USA
| | - L. K. Cheng
- University of Auckland; Auckland New Zealand
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Du P, Cao AH, Guo ZW, Shao Q, Xu K. [Value of low-dose multi-slice spiral CT chest scan in diagnosis of coal workers' pneumoconiosis]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2016; 34:674-677. [PMID: 27866545 DOI: 10.3760/cma.j.issn.1001-9391.2016.09.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Objective: To investigate the value of low-dose multi-slice CT (MSCT) chest scan in the diagnosis of coal workers' pneumoconiosis. Methods: A total of 90 patients with a confirmed diagnosis of coal workers' pneumoconiosis were enrolled, and under the conditions of fixed tube voltage, pitch, and slice thickness, they underwent CT scan with a normal dose (150 mA) and a low dose (30-50 mA). The quality of images obtained from two scans was compared, and the imaging findings, opacity profusion, stage, and radiation doses were also compared. Results: Compared with the normal-dose scan, low-dose scan increased the image noise, and the images obtained from scans with doses of 30, 40, and 50 mA did not show significant reductions in signal-to-noise ratio or contrast-to-noise ratio (P>0.05). There was no significant difference in the percentage of image quality between low-dose and normal-dose scans (P>0.05). There were no significant differences in the percentage of various imaging findings, opacity profusion, or percentage of different stages between low-dose (30, 40, and 50 mA) and normal-dose (150 mA) scans (P>0.05). Conclusion: There are no significant differences between low-dose MSCT chest scan and normal-dose CT in image quality, imaging findings of coal workers' pneumoconiosis, opacity profusion, and stage. Meanwhile, low-dose MSCT chest scan greatly reduces the radiation dose and can be used to assist the diagnosis and follow-up reexamination of coal workers' pneumoconiosis and cover the shortage of high-kilovoltage chest X-ray.
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Affiliation(s)
- P Du
- *Department of Radiology, Second Affiliated Hospital of Xuzhou Medical College, Xuzhou 221000, China
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An L, Han X, Li H, Ma Y, Shi L, Xu G, Yuan G, Sun J, Zhao N, Sheng Y, Wang M, Du P. Effects and mechanism of cerebroprotein hydrolysate on learning and memory ability in mice. Genet Mol Res 2016; 15:gmr8804. [DOI: 10.4238/gmr.15038804] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Abstract
With cyclic freeze–thaw process, the strain hysteretic loop of concrete matrix is raised upwards indicating that residual strain occurs, which proves that the damage is continuously accumulated and an irreversible deterioration process is generated.
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Affiliation(s)
- P. Du
- Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials
- University of Jinan
- Jinan 250022
- China
- School of Materials Science and Engineering
| | - Y. Yao
- States Key Laboratory of Green Building Materials
- China Building Materials Academy
- Beijing 100024
- China
| | - L. Wang
- States Key Laboratory of Green Building Materials
- China Building Materials Academy
- Beijing 100024
- China
| | - D. Y. Xu
- Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials
- University of Jinan
- Jinan 250022
- China
- School of Materials Science and Engineering
| | - Z. H. Zhou
- Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials
- University of Jinan
- Jinan 250022
- China
- School of Materials Science and Engineering
| | - S. F. Huang
- Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials
- University of Jinan
- Jinan 250022
- China
- School of Materials Science and Engineering
| | - X. Cheng
- Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials
- University of Jinan
- Jinan 250022
- China
- School of Materials Science and Engineering
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Shao M, Du WF, Yu DC, Du P, Ni SJ, Xu YC, Zhang HJ. First Report of Stem Rot of Konjac Caused by Phytophthora nicotianae in China. Plant Dis 2015; 99:283. [PMID: 30699574 DOI: 10.1094/pdis-12-13-1204-pdn] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Konjac (Amorphophallus) is an important economic crop widely used in health products and biomaterials in Asia (2). A serious foliage disease of Konjac was observed in Fuyuan County, Yunnan Province, China, in July 2012. The symptoms began with leaf color changes from light green to yellow, followed by discoloration on the stem base, plant wilting, bulb rotting, and ultimately plant death. Symptomatic tissues were cut into small pieces, surface-sterilized, and cultured on 20% V8 juice agar at 28°C. Five days after incubation, white fluffy colonies with the typical sporangium of Phytophthora sp. were observed from root and stem pieces. Isolates were identified as P. nicotianae based on morphological characteristics and DNA analysis. The growth rate of the colonies was 16 mm/d at 28°C. Sporangia were pyriform, ovoid to spherical, and papillate, and the dimensions of the 80 sporangia measured ranged from 23.7 to 60.4 × 19.4 to 45.7 μm (avg. 42.4 × 31.5 μm) with length-to-breadth ratios of 1.19 to 1.44 (avg. 1.34). The chlamydospores were spherical with a smooth surface, and their dimensions ranged from 20.3 to 47.3 × 18.9 to 45.9 μm (avg. 32.7 × 30.4 μm) (3). DNA was extracted from one colony containing spores and hyphae of the isolated P. nicotianae, and the nuclear ribosomal DNA internal transcribed spacer (ITS) region was amplified with primers ITS6 and ITS4 (4). The obtained 854-bp amplicon was purified and sequenced. NCBI BLAST retrieved a 100% identity with P. nicotianae (GenBank Accession No. KJ506732). A pathogenicity test of the isolated P. nicotianae was conducted in a greenhouse. After 7 days in a humidity-controlled greenhouse, all 10 inoculated plants showed similar symptoms as observed initially in the field, while control plants were symptomless. P. nicotianae was re-isolated from the inoculated stems, thus successfully completing Koch's postulates (1). To our knowledge, this is the first report of P. nicotianae as a pathogen of Konjac in China. References: (1) B. Alvarez-Rodriguez et al. Plant Dis. 97:1257, 2013. (2) H. Ban, et al. Plant Cell Rep. 28:1847, 2009. (3) D. C. Erwin and O. K. Ribeiro. Phytophthora Diseases Worldwide. APS Press, St. Paul, MN, 1996. (4) J. M. French et al. Plant Dis. 95:1028, 2011.
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Affiliation(s)
- M Shao
- Key Laboratory for Agro-Biodiversity and Pest Control of the Ministry of Education, College of Plant Protection, Yunnan Agricultural University, Kunming,650201, China
| | - W F Du
- Key Laboratory for Agro-Biodiversity and Pest Control of the Ministry of Education, College of Plant Protection, Yunnan Agricultural University, Kunming,650201, China
| | - D C Yu
- Key Laboratory for Agro-Biodiversity and Pest Control of the Ministry of Education, College of Plant Protection, Yunnan Agricultural University, Kunming,650201, China
| | - P Du
- Key Laboratory for Agro-Biodiversity and Pest Control of the Ministry of Education, College of Plant Protection, Yunnan Agricultural University, Kunming,650201, China
| | - S J Ni
- Key Laboratory for Agro-Biodiversity and Pest Control of the Ministry of Education, College of Plant Protection, Yunnan Agricultural University, Kunming,650201, China
| | - Y C Xu
- Key Laboratory for Agro-Biodiversity and Pest Control of the Ministry of Education, College of Plant Protection, Yunnan Agricultural University, Kunming,650201, China
| | - H J Zhang
- Key Laboratory for Agro-Biodiversity and Pest Control of the Ministry of Education, College of Plant Protection, Yunnan Agricultural University, Kunming,650201, China
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Wang D, Huang H, Wang H, Yuan H, Du P, Wang C, Wang Y. Association study of vascular endothelial growth factor gene polymorphisms with ectopic pregnancy in Chinese women. CLIN EXP OBSTET GYN 2014. [DOI: 10.12891/ceog18032014] [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: 11/01/2022]
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Zhang W, Li YS, Du P, Xu C, Hui PM. Phase transitions in a coevolving snowdrift game with costly rewiring. Phys Rev E Stat Nonlin Soft Matter Phys 2014; 90:052819. [PMID: 25493846 DOI: 10.1103/physreve.90.052819] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2014] [Indexed: 06/04/2023]
Abstract
We propose and study a dissatisfied adaptive snowdrift game with a payoff parameter r that incorporates a cost for rewiring a connection. An agent, facing adverse local environment, may switch action without a cost or rewire an existing link with a cost a so as to attain a better competing environment. Detailed numerical simulations reveal nontrivial and nonmonotonic dependence of the frequency of cooperation and the densities of different types of links on a and r. A theory that treats the cooperative and noncooperative agents separately and accounts for spatial correlation up to neighboring agents is formulated. The theory gives results that are in good agreement with simulations. The frequency of cooperation f_{C} is enhanced (suppressed) at high rewiring cost relative to that at low rewiring cost when r is small (large). For a given value of r, there exists a critical value of the rewiring cost below which the system evolves into a phase of frozen dynamics with isolated noncooperative agents segregated from a cluster of cooperative agents, and above which the system evolves into a connected population of mixed actions with continual dynamics. The phase boundary on the a-r phase space that separates the two phases with distinct structural, population and dynamical properties is mapped out. The phase diagram reveals that, as a general feature, for small r (small a), the disconnected and segregated phase can survive over a wider range of a(r).
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Affiliation(s)
- W Zhang
- Department of Electronics and Communication Engineering, Suzhou Institute of Industrial Technology, Suzhou, 215104, China
| | - Y S Li
- College of Physics, Optoelectronics and Energy, Soochow University, Suzhou, 215006, China
| | - P Du
- College of Physics, Optoelectronics and Energy, Soochow University, Suzhou, 215006, China
| | - C Xu
- College of Physics, Optoelectronics and Energy, Soochow University, Suzhou, 215006, China
| | - P M Hui
- Department of Physics and Institute of Theoretical Physics, Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
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Abstract
The use of cutaneous recordings to non-invasively characterize gastric slow waves has had limited clinical acceptance, primarily due to the uncertainty in relating the recorded signal to the underlying gastric slow waves. In this study we aim to distinguish and quantitatively reconstruct different slow wave patterns using an inverse algorithm. Slow wave patterns corresponding to normal, retrograde and uncoupled activity at different frequencies were imposed on a stomach surface model. Gaussian noise (10% peak-to-peak) was added to cutaneous potentials and the Greensite-Tikhonov inverse method was used to reconstruct the potentials on the stomach. The effectiveness of the number or location of electrodes on the accuracy of the inverse solutions was investigated using four different electrode configurations. Results showed the reconstructed solutions were able to reliably distinguish the different slow wave patterns and waves with lower frequency were better correlated to the known solution than those with higher. The use of up to 228 electrodes improved the accuracy of the inverse solutions. However, the use of 120 electrodes concentrated around the stomach was able to achieve similar results. The most efficient electrode configuration for our model involved 120 electrodes with an inter-electrode distance of 32 mm.
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Affiliation(s)
- J H K Kim
- Auckland Bioengineering Institute, The University of Auckland, Auckland, New Zealand
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Wang DJ, Huang H, Wang HY, Yuan H, Du P, Wang CY, Wang YF. Association study of vascular endothelial growth factor gene polymorphisms with ectopic pregnancy in Chinese women. CLIN EXP OBSTET GYN 2014; 41:665-670. [PMID: 25551960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
OBJECTIVE The purpose of this study is to evaluate potential associations between vascular endothelial growth factor (VEGF) gene polymorphisms and ectopic pregnancy (EP) in Chinese women. MATERIALS AND METHODS This was a case-control study wherein 192 women with a history of EP were compared to 210 post-menopausal controls with two pregnancies and no EP for the genotyping of VEGF polymorphisms. Genotyping of the VEGF gene polymorphisms at -460C/T, -1 154G/A, -2578C/A and +936C/T were performed by polymerase chain reaction-restriction fragment length polymorphism. RESULTS No significant differences were found in genotype and allele distributions of the -460C/T, +936C/T polymorphisms between cases and controls. Compared with the -1154G/G genotype, the -1154(A/A+G/A) genotype could significantly reduce the risk of developing EP. For the -2578C/A polymorphism, the A/A+C/A geno- type could significantly decrease the risk of developing EP, compared with the C/C genotype. The haplotype analysis suggested that the TAA (VEGF -460/-1154/-2578) and CAA haplotypes could significantly decrease the risk of developing EP compared with the haplotype of TGC. CONCLUSION The -1154A or -2578A alleles of VEGF gene could significantly decrease the risk of EP and might be po- tentially protective factors for EP development in Chinese women.
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Affiliation(s)
- D J Wang
- Department of Gynecology, Zhujiang Hospital of Southern Medical University, Nanhai District People’s Hospital of Foshan City, China
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Abstract
A key discovery in gastrointestinal motility has been the central role played by interstitial cells of Cajal (ICC) in generating electrical slow waves that coordinate contractions. Multielectrode mapping and multiscale modeling are two emerging interdisciplinary strategies now showing translational promise to investigate ICC function, electrophysiology, and contractions in the human gut.
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Affiliation(s)
- L K Cheng
- Auckland Bioengineering Institute, The University of Auckland, Auckland, New Zealand.
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Liu YJ, Du P, Rao J. Procalcitonin as a diagnostic and prognostic marker for sepsis caused by intestinal infection: a case report. Eur Rev Med Pharmacol Sci 2013; 17:1311-1313. [PMID: 23740442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
BACKGROUND In recent years, procalcitonin has emerged as a promising marker for bacterial infection, with the high sensitivity and specificity. CASE PRESENTATION This report presents a 76-year-old woman with fever, vomiting and diarrhea. The clinical and laboratory examination revealed that the patient had a suspected serious intestinal infection and sepsis. The extremely high level of procalcitonin and positive blood culture result confirmed our diagnosis. CONCLUSIONS Early identification of severe sepsis sometimes is very difficult. Procalcitonin is a useful tool in the early diagnosis of sepsis, differentiating from other inflammatory syndrome. The high PCT level (10 ng/ml) in this case could suggest serious bacterial infection and sepsis, and also predicts mortality and worse outcome.
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Affiliation(s)
- Y-J Liu
- Laboratory Department and Institute of Immunology, Wuhan Neurologist Hospital and General Hospital of The Yangtze River Shipping, Wuhan, Hubei, China.
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Berrut G, Andrieu S, Araujo de Carvalho I, Baeyens JP, Bergman H, Cassim B, Cerreta F, Cesari M, Cha HB, Chen LK, Cherubini A, Chou MY, Cruz-Jentoft AJ, De Decker L, Du P, Forette B, Forette F, Franco A, Guimaraes R, Guttierrez-Robledo LM, Jauregui J, Khavinson V, Lee WJ, Peng LN, Perret-Guillaume C, Petrovic M, Retornaz F, Rockwood K, Rodriguez-Manas L, Sieber C, Spatharakis G, Theou O, Topinkova E, Vellas B, Benetos A. Promoting access to innovation for frail old persons. IAGG (International Association of Gerontology and Geriatrics), WHO (World Health Organization) and SFGG (Société Française de Gériatrie et de Gérontologie) Workshop--Athens January 20-21, 2012. J Nutr Health Aging 2013; 17:688-93. [PMID: 24097023 DOI: 10.1007/s12603-013-0039-2] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [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: 12/21/2022]
Abstract
UNLABELLED Frailty tends to be considered as a major risk for adverse outcomes in older persons, but some important aspects remain matter of debate. OBJECTIVES The purpose of this paper is to present expert's positions on the main aspects of the frailty syndrome in the older persons. PARTICIPANTS Workshop organized by International Association of Gerontology and Geriatrics (IAGG), World Health Organization (WHO) and Société Française de Gériatrie et de Gérontologie (SFGG). RESULTS Frailty is widely recognized as an important risk factor for adverse health outcomes in older persons. This can be of particular value in evaluating non-disabled older persons with chronic diseases but today no operational definition has been established. Nutritional status, mobility, activity, strength, endurance, cognition, and mood have been proposed as markers of frailty. Another approach calculates a multidimensional score ranging from "very fit" to "severely frail", but it is difficult to apply into the medical practice. Frailty appears to be secondary to multiple conditions using multiple pathways leading to a vulnerability to a stressor. Biological (inflammation, loss of hormones), clinical (sarcopenia, osteoporosis etc.), as well as social factors (isolation, financial situation) are involved in the vulnerability process. In clinical practice, detection of frailty is of major interest in oncology because of the high prevalence of cancer in older persons and the bad tolerance of the drug therapies. Presence of frailty should also be taken into account in the definition of the cardiovascular risks in the older population. The experts of the workshop have listed the points reached an agreement and those must to be a priority for improving understanding and use of frailty syndrome in practice. CONCLUSION Frailty in older adults is a syndrome corresponding to a vulnerability to a stressor. Diagnostic tools have been developed but none can integrate at the same time the large spectrum of factors and the simplicity asked by the clinical practice. An agreement with an international common definition is necessary to develop screening and to reduce the morbidity in older persons.
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Affiliation(s)
- G Berrut
- Pr Athanase Benetos, MD, PhD, Département de Médecine Gériatrique, CHU de Nancy, Avenue de Bourgogne, BP 217, 54511 Vandoeuvre-les-Nancy, France,
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Luo YC, Du P, Zhao JZ, Duan XJ, Hou YJ, Pan H, Shao SH. A multiplex touchdown PCR for detection of Streptococcus pneumoniae, Haemophilus influenzae type b and Mycobacterium tuberculosis complex in sputum samples. Trop Biomed 2012; 29:422-428. [PMID: 23018505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Rapid and accurate detection of Streptococcus pneumoniae (Sp), Haemophilus influenzae type b (Hib) and Mycobacterium tuberculosis complex (MTBC) in sputum by conventional methods remains problematic. Primers based on capsular polysaccharide biosynthesis gene (cpsA), the region II of the capsulation locus (cap), the insertion sequence IS6110 were designed for Sp, Hib, MTBC respectively. These primers were incorporated in a multiplex touchdown PCR assay for simultaneous detection of Sp, Hib and MTBC. The multiplex touchdown PCR assay was evaluated using standard strains and clinical sputum samples. The multiplex touchdown PCR assay showed 100% specificity in identifying Sp, Hib, MTBC from pure culture of standard strains. The sensitivities of the multiplex touchdown PCR assay were 94%, 98%, 98% for detection of Sp, Hib and MTBC respectively based on culture results while evaluated using 492 consecutive qualified clinical sputum samples; the specificities were all 100%. This highly sensitive and specific multiplex touchdown PCR assay offers a rapid and simple method for detection of Sp, Hib and MTBC in clinical sputum samples.
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Affiliation(s)
- Y C Luo
- School of Medical Science and Laboratory Medicine, Jiangsu University, Zhenjiang 212013, China
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