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Zhang G, Wang SC, Su Y, Liu ZK, Yu GX, Zhang J, Mei L, Sun N, Li YZ, Zhang XX, Liu QY, Liu ZY, Li XD, Ni X. [Retrospective study of 70 cases with the head and neck non-parameningeal rhabdomyosarcoma]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2024; 59:133-139. [PMID: 38369791 DOI: 10.3760/cma.j.cn115330-20230712-00002] [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: 02/20/2024]
Abstract
Objective: To analyze the treatment outcomes and prognoses of children with head and neck non-parameningeal rhabdomyosarcoma (HNnPM RMS). Methods: A retrospective analysis was performed on the clinical data of children with HNnPM RMS admitted to Beijing Children's Hospital from September 2012 to September 2022. The clinical features, comprehensive treatment modes and prognoses of the patients were analyzed. The overall survival rate (OS) and event free survival rate (EFS) were calculated using the Kaplan-Meier method, and univariate analysis was performed using the Log-rank test. Results: A total of 70 children were included in this study, 38 males and 32 females, with a median age of 47 months (2-210 months). Pathological subtypes including the embryonal in 27 cases, the alveolar in 36 cases and the spindle cell and sclerosing in 7 cases. Thirty children (83.3%) with alveolar type were positive for FOXO1 gene fusion. All 70 children underwent chemotherapy, including 38 with neoadjuvant chemotherapy and 32 with adjuvant chemotherapy. Sixty of 70 children underwent surgery, of whom, 10 underwent two or more surgeries. There were 63 children underwent radiotherapy, including 54 with intensity-modulated radiation therapy, 4 with particle implantation and 5 with proton therapy. The median follow-up was 45 (5-113) months, the 5-year OS was 73.2%, and the 5-year EFS was 57.7%. Univariate analysis showed lymph node metastasis (χ2=5.022, P=0.025), distant metastasis (χ2=8.258, P=0.004), and high Intergroup Rhabdomyosarcoma Study (IRS) group (χ2=9.859, P=0.029) as risk factors for poor prognosis. Before June 2016, the 5-year OS based on BCH-RMS-2006 scheme was 63.6%, and after 2016, the 5-year OS based on CCCG-RMS-2016 scheme was 79.6%. Conclusion: Multidisciplinary combined standardized treatment can offer good treatment outcome and prognosis for children with HNnPM RMS. Local control is a key to the efficacy of comprehensive treatment.
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Affiliation(s)
- G Zhang
- Department of Otolaryngology, Head and Neck Surgery, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - S C Wang
- Department of Otolaryngology, Head and Neck Surgery, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - Y Su
- Department of Hematology Oncology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - Z K Liu
- Department of Radiotherapy, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China
| | - G X Yu
- Department of Stomatology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - J Zhang
- Department of Otolaryngology, Head and Neck Surgery, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - L Mei
- Department of Otolaryngology, Head and Neck Surgery, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - N Sun
- Department of Otolaryngology, Head and Neck Surgery, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - Y Z Li
- Department of Otolaryngology, Head and Neck Surgery, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - X X Zhang
- Department of Otolaryngology, Head and Neck Surgery, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - Q Y Liu
- Department of Otolaryngology, Head and Neck Surgery, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - Z Y Liu
- Department of Otolaryngology, Head and Neck Surgery, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - X D Li
- Department of Otolaryngology, Head and Neck Surgery, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - X Ni
- Department of Otolaryngology, Head and Neck Surgery, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
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Yilihamujiang H, Ni X, Yu M, Dong S, Mei L, Zheng Y, Cheng L, Pang N. Serum TNF-α level and probing depth as a combined indicator for peri-implant disease. Braz J Med Biol Res 2024; 57:e12989. [PMID: 38265340 PMCID: PMC10802234 DOI: 10.1590/1414-431x2023e12989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 11/30/2023] [Indexed: 01/25/2024] Open
Abstract
Peri-implant disease (PID) is a general term for inflammatory diseases of soft and hard tissues that occur around implants, including peri-implant mucositis and peri-implantitis. Cytokines are a class of small molecule proteins, which have various functions such as regulating innate immunity, adaptive immunity, and repairing damaged tissues. In order to explore the characteristics and clinical significance of tumor necrosis factor (TNF)-α, interleukin (IL)-6, IL-10, and tumor growth factor (TGF)-β1 expression levels in serum of patients with peri-implant disease, 31 patients with PID and 31 patients without PID were enrolled. The modified plaque index (mPLI), modified sulcus bleeding index (mSBI), and peri-implant probing depth (PD) were recorded. The levels of serum TNF-α, IL-6, IL-10, and TGF-β1 were detected by ELISA. TNF-α, mPLI, mSBI, and PD levels were significantly higher in the PID group. TGF-β1 levels were significantly higher in the control group. There was a significant positive correlation between TNF-α and mPLI, mSBI, and PD. TGF-β1 was negatively associated with TNF-α, mPLI, mSBI, and PD. Multiple logistic regression analysis showed that TNF-α and PD were risk factors for the severity of PID. The receiver operating curve analysis showed that high TNF-α levels (cut-off value of 140 pg/mL) and greater PD values (cut-off value of 4 mm) were good predictors of PID severity with an area under the curve of 0.922. These results indicated that TNF-α and PD can be used as a biological indicator for diagnosing the occurrence and progression of PID.
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Affiliation(s)
- Huerxidai Yilihamujiang
- Department of Prosthodontics and Dental Implant, Xinjiang Medical University Affiliated First Hospital, School of Stomatology, Xinjiang Uyghur Autonomous Region, Urumqi, China
| | - Xiaofeng Ni
- Department of Prosthodontics and Dental Implant, Xinjiang Medical University Affiliated First Hospital, School of Stomatology, Xinjiang Uyghur Autonomous Region, Urumqi, China
| | - Mingkai Yu
- School of Public Health, Xinjiang Medical University, Urumqi, China
| | - Shuya Dong
- Department of Prosthodontics and Dental Implant, Xinjiang Medical University Affiliated First Hospital, School of Stomatology, Xinjiang Uyghur Autonomous Region, Urumqi, China
| | - Long Mei
- Department of Prosthodontics and Dental Implant, Xinjiang Medical University Affiliated First Hospital, School of Stomatology, Xinjiang Uyghur Autonomous Region, Urumqi, China
| | - Yuxiang Zheng
- Department of Prosthodontics and Dental Implant, Xinjiang Medical University Affiliated First Hospital, School of Stomatology, Xinjiang Uyghur Autonomous Region, Urumqi, China
| | - Lujin Cheng
- Department of Prosthodontics and Dental Implant, Xinjiang Medical University Affiliated First Hospital, School of Stomatology, Xinjiang Uyghur Autonomous Region, Urumqi, China
- Stomatological Research Institute of Xinjiang Uygur Autonomous Region, Urumqi, China
| | - Nannan Pang
- Department of Pathology, the First Affiliated Hospital of Shihezi University, Shihezi, Xinjiang, China
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3
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Wang H, Qian T, Zhao Y, Zhuo Y, Wu C, Osakada T, Chen P, Chen Z, Ren H, Yan Y, Geng L, Fu S, Mei L, Li G, Wu L, Jiang Y, Qian W, Zhang L, Peng W, Xu M, Hu J, Jiang M, Chen L, Tang C, Zhu Y, Lin D, Zhou JN, Li Y. A tool kit of highly selective and sensitive genetically encoded neuropeptide sensors. Science 2023; 382:eabq8173. [PMID: 37972184 DOI: 10.1126/science.abq8173] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 10/02/2023] [Indexed: 11/19/2023]
Abstract
Neuropeptides are key signaling molecules in the endocrine and nervous systems that regulate many critical physiological processes. Understanding the functions of neuropeptides in vivo requires the ability to monitor their dynamics with high specificity, sensitivity, and spatiotemporal resolution. However, this has been hindered by the lack of direct, sensitive, and noninvasive tools. We developed a series of GRAB (G protein-coupled receptor activation‒based) sensors for detecting somatostatin (SST), corticotropin-releasing factor (CRF), cholecystokinin (CCK), neuropeptide Y (NPY), neurotensin (NTS), and vasoactive intestinal peptide (VIP). These fluorescent sensors, which enable detection of specific neuropeptide binding at nanomolar concentrations, establish a robust tool kit for studying the release, function, and regulation of neuropeptides under both physiological and pathophysiological conditions.
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Affiliation(s)
- Huan Wang
- State Key Laboratory of Membrane Biology, Peking University School of Life Sciences, Beijing 100871, China
- IDG/McGovern Institute for Brain Research, Peking University, Beijing 100871, China
| | - Tongrui Qian
- State Key Laboratory of Membrane Biology, Peking University School of Life Sciences, Beijing 100871, China
- IDG/McGovern Institute for Brain Research, Peking University, Beijing 100871, China
| | - Yulin Zhao
- State Key Laboratory of Membrane Biology, Peking University School of Life Sciences, Beijing 100871, China
- IDG/McGovern Institute for Brain Research, Peking University, Beijing 100871, China
| | - Yizhou Zhuo
- State Key Laboratory of Membrane Biology, Peking University School of Life Sciences, Beijing 100871, China
- IDG/McGovern Institute for Brain Research, Peking University, Beijing 100871, China
| | - Chunling Wu
- State Key Laboratory of Membrane Biology, Peking University School of Life Sciences, Beijing 100871, China
- IDG/McGovern Institute for Brain Research, Peking University, Beijing 100871, China
| | - Takuya Osakada
- Department of Psychiatry and Department of Neuroscience and Physiology, New York University Langone Medical Center, New York, NY 10016, USA
| | - Peng Chen
- Institute of Brain Science, The First Affiliated Hospital of Anhui Medical University, Hefei 230022, China
- Chinese Academy of Sciences Key Laboratory of Brain Function and Diseases, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230026, China
| | - Zijun Chen
- Shenzhen Key Laboratory of Drug Addiction, Shenzhen Neher Neural Plasticity Laboratory, Brain Cognition and Brain Disease Institute, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Huixia Ren
- Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
| | - Yuqi Yan
- State Key Laboratory of Membrane Biology, Peking University School of Life Sciences, Beijing 100871, China
- IDG/McGovern Institute for Brain Research, Peking University, Beijing 100871, China
- Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
| | - Lan Geng
- State Key Laboratory of Membrane Biology, Peking University School of Life Sciences, Beijing 100871, China
- IDG/McGovern Institute for Brain Research, Peking University, Beijing 100871, China
| | - Shengwei Fu
- State Key Laboratory of Membrane Biology, Peking University School of Life Sciences, Beijing 100871, China
- IDG/McGovern Institute for Brain Research, Peking University, Beijing 100871, China
- Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
| | - Long Mei
- Department of Psychiatry and Department of Neuroscience and Physiology, New York University Langone Medical Center, New York, NY 10016, USA
| | - Guochuan Li
- State Key Laboratory of Membrane Biology, Peking University School of Life Sciences, Beijing 100871, China
- IDG/McGovern Institute for Brain Research, Peking University, Beijing 100871, China
| | - Ling Wu
- State Key Laboratory of Membrane Biology, Peking University School of Life Sciences, Beijing 100871, China
- IDG/McGovern Institute for Brain Research, Peking University, Beijing 100871, China
| | - Yiwen Jiang
- Department of Psychiatry and Department of Neuroscience and Physiology, New York University Langone Medical Center, New York, NY 10016, USA
| | - Weiran Qian
- Institute of Molecular Medicine, Peking University, Beijing 100871, China
| | - Li Zhang
- Department of Physiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Wanling Peng
- Chinese Academy of Sciences Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai 200031, China
| | - Min Xu
- Chinese Academy of Sciences Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai 200031, China
| | - Ji Hu
- School of Life Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Man Jiang
- Department of Physiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Liangyi Chen
- Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
| | - Chao Tang
- Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
| | - Yingjie Zhu
- Shenzhen Key Laboratory of Drug Addiction, Shenzhen Neher Neural Plasticity Laboratory, Brain Cognition and Brain Disease Institute, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Dayu Lin
- Department of Psychiatry and Department of Neuroscience and Physiology, New York University Langone Medical Center, New York, NY 10016, USA
| | - Jiang-Ning Zhou
- Institute of Brain Science, The First Affiliated Hospital of Anhui Medical University, Hefei 230022, China
- Chinese Academy of Sciences Key Laboratory of Brain Function and Diseases, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230026, China
| | - Yulong Li
- State Key Laboratory of Membrane Biology, Peking University School of Life Sciences, Beijing 100871, China
- IDG/McGovern Institute for Brain Research, Peking University, Beijing 100871, China
- Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
- National Biomedical Imaging Center, Peking University, Beijing 100871, China
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4
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Abstract
Sexual, parental, and aggressive behaviors are central to the reproductive success of individuals and species survival and thus are supported by hardwired neural circuits. The reproductive behavior control column (RBCC), which comprises the medial preoptic nucleus (MPN), the ventrolateral part of the ventromedial hypothalamus (VMHvl), and the ventral premammillary nucleus (PMv), is essential for all social behaviors. The RBCC integrates diverse hormonal and metabolic cues and adjusts an animal's physical activity, hence the chance of social encounters. The RBCC further engages the mesolimbic dopamine system to maintain social interest and reinforces cues and actions that are time-locked with social behaviors. We propose that the RBCC and brainstem form a dual-control system for generating moment-to-moment social actions. This Review summarizes recent progress regarding the identities of RBCC cells and their pathways that drive different aspects of social behaviors.
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Affiliation(s)
- Long Mei
- Neuroscience Institute, New York University Langone Medical Center, New York, NY 10016, USA
| | - Takuya Osakada
- Neuroscience Institute, New York University Langone Medical Center, New York, NY 10016, USA
| | - Dayu Lin
- Neuroscience Institute, New York University Langone Medical Center, New York, NY 10016, USA
- Department of Psychiatry, New York University Langone Medical Center, New York, NY 10016, USA
- Department of Neuroscience and Physiology, New York University Langone Medical Center, New York, NY 10016, USA
- Center for Neural Science, New York University, New York, NY 10016, USA
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5
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Qian T, Wang H, Wang P, Geng L, Mei L, Osakada T, Wang L, Tang Y, Kania A, Grinevich V, Stoop R, Lin D, Luo M, Li Y. A genetically encoded sensor measures temporal oxytocin release from different neuronal compartments. Nat Biotechnol 2023; 41:944-957. [PMID: 36593404 DOI: 10.1038/s41587-022-01561-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 10/12/2022] [Indexed: 01/03/2023]
Abstract
Oxytocin (OT), a peptide hormone and neuromodulator, is involved in diverse physiological and pathophysiological processes in the central nervous system and the periphery. However, the regulation and functional sequences of spatial OT release in the brain remain poorly understood. We describe a genetically encoded G-protein-coupled receptor activation-based (GRAB) OT sensor called GRABOT1.0. In contrast to previous methods, GRABOT1.0 enables imaging of OT release ex vivo and in vivo with suitable sensitivity, specificity and spatiotemporal resolution. Using this sensor, we visualize stimulation-induced OT release from specific neuronal compartments in mouse brain slices and discover that N-type calcium channels predominantly mediate axonal OT release, whereas L-type calcium channels mediate somatodendritic OT release. We identify differences in the fusion machinery of OT release for axon terminals versus somata and dendrites. Finally, we measure OT dynamics in various brain regions in mice during male courtship behavior. Thus, GRABOT1.0 provides insights into the role of compartmental OT release in physiological and behavioral functions.
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Affiliation(s)
- Tongrui Qian
- State Key Laboratory of Membrane Biology, Peking University School of Life Sciences, Beijing, China
- PKU-IDG/McGovern Institute for Brain Research, Beijing, China
| | - Huan Wang
- State Key Laboratory of Membrane Biology, Peking University School of Life Sciences, Beijing, China
- PKU-IDG/McGovern Institute for Brain Research, Beijing, China
| | - Peng Wang
- Medical Center for Human Reproduction, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Lan Geng
- State Key Laboratory of Membrane Biology, Peking University School of Life Sciences, Beijing, China
- PKU-IDG/McGovern Institute for Brain Research, Beijing, China
| | - Long Mei
- Neuroscience Institute, Department of Psychiatry, New York University Grossman School of Medicine, New York, NY, USA
| | - Takuya Osakada
- Neuroscience Institute, Department of Psychiatry, New York University Grossman School of Medicine, New York, NY, USA
| | - Lei Wang
- State Key Laboratory of Membrane Biology, Peking University School of Life Sciences, Beijing, China
- PKU-IDG/McGovern Institute for Brain Research, Beijing, China
- Peking University-Tsinghua University-National Institute of Biological Sciences Joint Graduate Program, Peking University, Beijing, China
| | - Yan Tang
- Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital Center (CHUV) and University of Lausanne (UNIL), Lausanne, Switzerland
| | - Alan Kania
- Department of Neuropeptide Research in Psychiatry, Central Institute of Mental Health, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Valery Grinevich
- Department of Neuropeptide Research in Psychiatry, Central Institute of Mental Health, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Ron Stoop
- Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital Center (CHUV) and University of Lausanne (UNIL), Lausanne, Switzerland
| | - Dayu Lin
- Neuroscience Institute, Department of Psychiatry, New York University Grossman School of Medicine, New York, NY, USA
| | - Minmin Luo
- National Institute of Biological Sciences (NIBS), Beijing, China
- Chinese Institute for Brain Research, Beijing, China
- Tsinghua Institute of Multidisciplinary Biomedical Research (TIMBR), Tsinghua University, Beijing, China
| | - Yulong Li
- State Key Laboratory of Membrane Biology, Peking University School of Life Sciences, Beijing, China.
- PKU-IDG/McGovern Institute for Brain Research, Beijing, China.
- Chinese Institute for Brain Research, Beijing, China.
- Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, China.
- National Biomedical Imaging Center, Peking University, Beijing, China.
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Mei L, Yan R, Yin L, Sullivan RM, Lin D. Antagonistic circuits mediating infanticide and maternal care in female mice. Nature 2023; 618:1006-1016. [PMID: 37286598 PMCID: PMC10648307 DOI: 10.1038/s41586-023-06147-9] [Citation(s) in RCA: 7] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 04/27/2023] [Indexed: 06/09/2023]
Abstract
In many species, including mice, female animals show markedly different pup-directed behaviours based on their reproductive state1,2. Naive wild female mice often kill pups, while lactating female mice are dedicated to pup caring3,4. The neural mechanisms that mediate infanticide and its switch to maternal behaviours during motherhood remain unclear. Here, on the basis of the hypothesis that maternal and infanticidal behaviours are supported by distinct and competing neural circuits5,6, we use the medial preoptic area (MPOA), a key site for maternal behaviours7-11, as a starting point and identify three MPOA-connected brain regions that drive differential negative pup-directed behaviours. Functional manipulation and in vivo recording reveal that oestrogen receptor α (ESR1)-expressing cells in the principal nucleus of the bed nucleus of stria terminalis (BNSTprESR1) are necessary, sufficient and naturally activated during infanticide in female mice. MPOAESR1 and BNSTprESR1 neurons form reciprocal inhibition to control the balance between positive and negative infant-directed behaviours. During motherhood, MPOAESR1 and BNSTprESR1 cells change their excitability in opposite directions, supporting a marked switch of female behaviours towards the young.
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Affiliation(s)
- Long Mei
- Neuroscience Institute, New York University Langone Medical Center, New York, NY, USA.
| | - Rongzhen Yan
- Neuroscience Institute, New York University Langone Medical Center, New York, NY, USA
| | - Luping Yin
- Neuroscience Institute, New York University Langone Medical Center, New York, NY, USA
| | - Regina M Sullivan
- Emotional Brain Institute, Nathan Kline Institute, Child and Adolescent Psychiatry, New York University Langone Medical Center, New York, NY, USA
| | - Dayu Lin
- Neuroscience Institute, New York University Langone Medical Center, New York, NY, USA.
- Department of Psychiatry, New York University Langone Medical Center, New York, NY, USA.
- Center for Neural Science, New York University, New York, NY, USA.
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Suwei D, Zhen L, Zhimin L, Mei L, Jianping K, Zhuohui P, Yanbin X, Xiang M. Hypoxia Modulates Melanoma Cells Proliferation and Apoptosis via miRNA-210/ISCU/ROS Signaling. Bull Exp Biol Med 2022; 173:645-650. [DOI: 10.1007/s10517-022-05605-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Indexed: 11/06/2022]
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Sinha A, McKenna M, Kollikonda S, Yao M, Mei L, Valentine L, Russo ML, Hornacek D, Kho R. The risk of venous thromboembolism in patients with and without leiomyomas undergoing hysterectomy. Am J Obstet Gynecol 2022. [DOI: 10.1016/j.ajog.2021.12.113] [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]
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9
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Wang T, Zhao R, Yang R, Li Y, Lien HL, Mei L, Nogueira G. Perceptions of NZ orthodontists and periodontists on the management of gingival recession in orthodontic patients. Aust Dent J 2022; 67 Suppl 1:S41-S49. [PMID: 35527478 PMCID: PMC9790197 DOI: 10.1111/adj.12914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/04/2022] [Indexed: 12/30/2022]
Abstract
BACKGROUND This study aimed to investigate the perceptions and opinions of orthodontists and periodontists on the management of gingival recession in orthodontic patients. METHODS An online survey was sent to 29 periodontists and 80 orthodontists registered and currently practising in New Zealand. All participants answered questions about the timing and clinical indications of mucogingival surgeries in orthodontic patients diagnosed with mucogingival deformities. RESULTS Most periodontists and orthodontists believed that gingival grafts should ideally be performed after orthodontic treatment. In clinical practice, 40% of periodontists indicated that they would receive referrals after completion of orthodontic treatment. However, 29.6% of orthodontists indicated that they would refer to a periodontist before orthodontic treatment in clinical practice. The most crucial factor that affected periodontists' decision-making was 'evidence-based guidelines' (35.0%), followed by 'clinical experience' (30.0%) and 'patient concerns' (15.0%). All four factors of 'gingival phenotype', 'presence of gingival recession', 'amount of keratinised tissue' and 'planning specific tooth movements' were equally considered by orthodontists regarding their decision-making. CONCLUSIONS The majority of the surveyed New Zealand periodontists and orthodontists expressed a belief that the ideal timing for the management of gingival recessions would be after the completion of orthodontic treatment.
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Affiliation(s)
- T Wang
- Department of Oral Sciences, Sir John Walsh Research Institute, Faculty of DentistryUniversity of OtagoDunedinNew Zealand
| | - R Zhao
- Department of Oral Sciences, Sir John Walsh Research Institute, Faculty of DentistryUniversity of OtagoDunedinNew Zealand
| | - R Yang
- Department of Oral Sciences, Sir John Walsh Research Institute, Faculty of DentistryUniversity of OtagoDunedinNew Zealand
| | - Y Li
- Department of Oral Sciences, Sir John Walsh Research Institute, Faculty of DentistryUniversity of OtagoDunedinNew Zealand
| | - HL Lien
- Department of Oral Sciences, Sir John Walsh Research Institute, Faculty of DentistryUniversity of OtagoDunedinNew Zealand
| | - L Mei
- Department of Oral Sciences, Sir John Walsh Research Institute, Faculty of DentistryUniversity of OtagoDunedinNew Zealand
| | - G Nogueira
- Department of Oral Sciences, Sir John Walsh Research Institute, Faculty of DentistryUniversity of OtagoDunedinNew Zealand
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Dubey N, Ribeiro J, Ferreira J, Xu J, Bordini E, Qu L, Mei L, Schwendeman A, Bottino M. Antimicrobial and Angiogenic Hybrid Scaffold for Regenerative Endodontics. Dent Mater 2022. [DOI: 10.1016/j.dental.2021.12.126] [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: 11/03/2022]
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Yang Y, Foster JT, Yi M, Zhan L, Zhang Y, Zhou B, Jiang J, Mei L. Phenotypic homogeneity of emetic Bacillus cereus isolates in China. Lett Appl Microbiol 2021; 73:646-651. [PMID: 34173253 DOI: 10.1111/lam.13527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Revised: 06/10/2021] [Accepted: 06/14/2021] [Indexed: 11/26/2022]
Abstract
Emetic Bacillus cereus strains produce a potent cereulide cytotoxin, which can cause acute and fatal cases of food poisoning. We isolated 18 emetic B. cereus strains from a food poisoning event, and from clinical and non-random food surveillance in China and phenotypic characteristics of haemolysis, starch hydrolysis, salicin fermentation, gelatin liquefaction, cytotoxicity, and susceptibility to antibiotics were assessed. All isolates were positive for haemolysis and gelatin liquefaction, and negative for starch hydrolysis and salicin fermentation. Their haemolytic potentials were intermediate to Bacillus anthracis and B. cereus ATCC 14579 (a non-emetic strain). All isolates were cytotoxic to CHO, Hep-2, and Vero cells, and were sensitive to ampicillin. The homogeneous phenotypes of emetic isolates from China are similar to the corresponding traits of European and Japanese isolates that have been characterized, suggesting highly similar phenotypes of emetic B. cereus worldwide.
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Affiliation(s)
- Y Yang
- Department of Microbiology, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, China
| | - J T Foster
- Pathogen and Microbiome Institute, Northern Arizona University, Flagstaff, AZ, USA
| | - M Yi
- Guangzhou Customs Technology Center, Guangzhou, China
| | - L Zhan
- Department of Microbiology, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, China
| | - Y Zhang
- Department of Microbiology, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, China
| | - B Zhou
- Department of Science Technology and Information, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, China
| | - J Jiang
- Department of Microbiology, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, China
| | - L Mei
- Department of Microbiology, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, China
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12
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Mei L, Alushin G. Metavinculin ABD-F-actin complex. 2020. [DOI: 10.2210/pdb6upw/pdb] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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13
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Mei L, Alushin G. Alpha-E-catenin ABD-F-actin complex. 2020. [DOI: 10.2210/pdb6upv/pdb] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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14
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Ju D, Zhang W, Yan J, Zhao H, Li W, Wang J, Liao M, Xu Z, Wang Z, Zhou G, Mei L, Hou N, Ying S, Cai T, Chen S, Xie X, Lai L, Tang C, Park N, Takahashi JS, Huang N, Qi X, Zhang EE. Chemical perturbations reveal that RUVBL2 regulates the circadian phase in mammals. Sci Transl Med 2020; 12:12/542/eaba0769. [DOI: 10.1126/scitranslmed.aba0769] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Accepted: 04/13/2020] [Indexed: 12/12/2022]
Abstract
Transcriptional regulation lies at the core of the circadian clockwork, but how the clock-related transcription machinery controls the circadian phase is not understood. Here, we show both in human cells and in mice that RuvB-like ATPase 2 (RUVBL2) interacts with other known clock proteins on chromatin to regulate the circadian phase. Pharmacological perturbation of RUVBL2 with the adenosine analog compound cordycepin resulted in a rapid-onset 12-hour clock phase-shift phenotype at human cell, mouse tissue, and whole-animal live imaging levels. Using simple peripheral injection treatment, we found that cordycepin penetrated the blood-brain barrier and caused rapid entrainment of the circadian phase, facilitating reduced duration of recovery in a mouse jet-lag model. We solved a crystal structure for human RUVBL2 in complex with a physiological metabolite of cordycepin, and biochemical assays showed that cordycepin treatment caused disassembly of an interaction between RUVBL2 and the core clock component BMAL1. Moreover, we showed with spike-in ChIP-seq analysis and binding assays that cordycepin treatment caused disassembly of the circadian super-complex, which normally resides at E-box chromatin loci such as PER1, PER2, DBP, and NR1D1. Mathematical modeling supported that the observed type 0 phase shifts resulted from derepression of E-box clock gene transcription.
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Affiliation(s)
- Dapeng Ju
- National Institute of Biological Sciences, Beijing 102206, China
- College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Wei Zhang
- RPXDs (Suzhou) Co. Ltd., Suzhou City, Jiangsu Province 215028, China
| | - Jiawei Yan
- School of Life Sciences, Peking University, Beijing 100871, China
| | - Haijiao Zhao
- National Institute of Biological Sciences, Beijing 102206, China
| | - Wei Li
- RPXDs (Suzhou) Co. Ltd., Suzhou City, Jiangsu Province 215028, China
| | - Jiawen Wang
- National Institute of Biological Sciences, Beijing 102206, China
| | - Meimei Liao
- National Institute of Biological Sciences, Beijing 102206, China
- College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Zhancong Xu
- National Institute of Biological Sciences, Beijing 102206, China
| | - Zhiqiang Wang
- National Institute of Biological Sciences, Beijing 102206, China
| | - Guanshen Zhou
- National Institute of Biological Sciences, Beijing 102206, China
| | - Long Mei
- National Institute of Biological Sciences, Beijing 102206, China
- School of Life Sciences, Peking University, Beijing 100871, China
| | - Nannan Hou
- National Institute of Biological Sciences, Beijing 102206, China
| | - Shuhua Ying
- National Institute of Biological Sciences, Beijing 102206, China
| | - Tao Cai
- National Institute of Biological Sciences, Beijing 102206, China
| | - She Chen
- National Institute of Biological Sciences, Beijing 102206, China
| | - Xiaowen Xie
- School of Life Sciences, Peking University, Beijing 100871, China
- Center for Quantitative Biology, Peking University, Beijing 100871, China
| | - Luhua Lai
- Center for Quantitative Biology, Peking University, Beijing 100871, China
- College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Chao Tang
- Center for Quantitative Biology, Peking University, Beijing 100871, China
- School of Physics and Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
| | - Noheon Park
- Department of Neuroscience, University of Texas Southwestern Medical Center, Dallas, TX 75390-9111, USA
| | - Joseph S. Takahashi
- Department of Neuroscience, University of Texas Southwestern Medical Center, Dallas, TX 75390-9111, USA
- Howard Hughes Medical Institute, University of Texas Southwestern Medical Center, Dallas, TX 75390-9111, USA
| | - Niu Huang
- National Institute of Biological Sciences, Beijing 102206, China
- Tsinghua Institute of Multidisciplinary Biomedical Research, Tsinghua University, Beijing 102206, China
| | - Xiangbing Qi
- National Institute of Biological Sciences, Beijing 102206, China
- Tsinghua Institute of Multidisciplinary Biomedical Research, Tsinghua University, Beijing 102206, China
| | - Eric Erquan Zhang
- National Institute of Biological Sciences, Beijing 102206, China
- Tsinghua Institute of Multidisciplinary Biomedical Research, Tsinghua University, Beijing 102206, China
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15
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Han K, Mei L, Zhong R, Pang Y, Zhang EE, Huang Y. A microfluidic approach for experimentally modelling the intercellular coupling system of a mammalian circadian clock at single-cell level. Lab Chip 2020; 20:1204-1211. [PMID: 32149320 DOI: 10.1039/d0lc00140f] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In mammals, it is believed that the intercellular coupling mechanism between neurons in the suprachiasmatic nucleus (SCN) confers robustness and distinguishes the central clock from peripheral circadian oscillators. Current in vitro culturing methods used in Petri dishes to study intercellular coupling by exogenous factors invariably cause perturbations, such as simple media changes. Here, we design a microfluidic device to quantitatively study the intercellular coupling mechanism of circadian clock at the single cell level, and demonstrate that vasoactive intestinal peptide (VIP) induced coupling in clock mutant Cry1-/- mouse adult fibroblasts engineered to express the VIP receptor, VPAC2, is sufficient to synchronize and maintain robust circadian oscillations. Our study provides a proof-of-concept platform to reconstitute the intercellular coupling system of the central clock using uncoupled, single fibroblast cells in vitro, to mimic SCN slice cultures ex vivo and mouse behavior in vivo phenotypically. Such a versatile microfluidic platform may greatly facilitate the studies of intercellular regulation networks, and provide new insights into the coupling mechanisms of the circadian clock.
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Affiliation(s)
- Kui Han
- Biomedical Pioneering Innovation Center (BIOPIC), Beijing Advanced Innovation Center for Genomics (ICG), College of Engineering, College of Chemistry, and Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China.
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16
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Wang Y, Luo F, Xia Y, Mei L, Xie L, Liu H. Clinical analysis of 211 cases of cesarean scar pregnancy. CLIN EXP OBSTET GYN 2019. [DOI: 10.12891/ceog5013.2019] [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]
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17
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Shukla GS, Pero SC, Sun YJ, Mei L, Zhang F, Sholler G, Krag DN. Multiple antibodies targeting tumor-specific mutations redirect immune cells to inhibit tumor growth and increase survival in experimental animal models. Clin Transl Oncol 2019; 22:1094-1104. [PMID: 31732916 DOI: 10.1007/s12094-019-02235-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Accepted: 10/18/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND T cell therapy for cancer involves genetic introduction of a target-binding feature into autologous T cells, ex vivo expansion and single large bolus administration back to the patient. These reprogrammed T cells can be highly effective in killing cells, but tumor heterogeneity results in regrowth of cells that do not sufficiently express the single antigen being targeted. We describe a cell-based therapy that simultaneously targets multiple tumor-specific antigens. METHODS High-affinity polyclonal rabbit antibodies were generated against nine different surface-related tumor-specific mutations on B16F10 cells. Unsorted splenic effector cells from syngeneic mice were incubated with a cocktail of the nine anti-B16F10 antibodies. These 'armed' effector cells were used to treat mice previously inoculated with B16F10 melanoma cells. RESULTS The cocktail of nine antibodies resulted in dense homogeneous binding to histological sections of B16F10 cells. Five treatments with the armed effector cells and PD1 inhibition inhibited tumor growth and improved survival. Shortening the interval of the five treatments from every three days to every day increased survival. Arming effector cells with the four antibodies showing best binding to B16F10 cells even further increased survival. CONCLUSIONS This study demonstrates that ex vivo arming a mixed population of immune effector cells with antibodies targeting multiple tumor-specific mutated proteins in conjunction with PD1 inhibition delayed tumor growth and prolonged survival in mice inoculated with an aggressive melanoma. A remarkably low total antibody dose of less than 5 µg was sufficient to accomplish tumor inhibition. Scaling up to clinical level may be feasible.
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Affiliation(s)
- G S Shukla
- Department of Surgery and University of Vermont Cancer Center, University of Vermont Larner College of Medicine, Burlington, VT, USA
| | - S C Pero
- Department of Surgery and University of Vermont Cancer Center, University of Vermont Larner College of Medicine, Burlington, VT, USA
| | - Y -J Sun
- Department of Surgery and University of Vermont Cancer Center, University of Vermont Larner College of Medicine, Burlington, VT, USA
| | - L Mei
- Department of Surgery and University of Vermont Cancer Center, University of Vermont Larner College of Medicine, Burlington, VT, USA
| | - F Zhang
- Vermont Genetics Network, University of Vermont, Burlington, VT, USA.,Department of Biology, University of Vermont, Burlington, VT, USA
| | - G Sholler
- Pediatric Oncology Research, Helen DeVos Children's Hospital, Grand Rapids, MI, USA
| | - D N Krag
- Department of Surgery and University of Vermont Cancer Center, University of Vermont Larner College of Medicine, Burlington, VT, USA.
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18
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Wu J, Cannon RD, Ji P, Farella M, Mei L. Halitosis: prevalence, risk factors, sources, measurement and treatment - a review of the literature. Aust Dent J 2019; 65:4-11. [PMID: 31610030 DOI: 10.1111/adj.12725] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/09/2019] [Indexed: 11/29/2022]
Abstract
Halitosis, an offensive breath odour, has multiple sources and negative impacts on people's social interactions and quality of life. It is important for health care professionals, including general physicians and dental professionals, to understand its aetiology and risk factors in order to diagnose and treat patients appropriately. In this study, we have reviewed the current literature on halitosis regarding its prevalence, classification, risk factors, sources, measurement and treatment.
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Affiliation(s)
- J Wu
- Department of Oral Sciences, Faculty of Dentistry, Sir John Walsh Research Institute, University of Otago, Dunedin, New Zealand
| | - R D Cannon
- Department of Oral Sciences, Faculty of Dentistry, Sir John Walsh Research Institute, University of Otago, Dunedin, New Zealand
| | - P Ji
- Stomatological Hospital of Chongqing Medical University, Chongqing, China
| | - M Farella
- Department of Oral Sciences, Faculty of Dentistry, Sir John Walsh Research Institute, University of Otago, Dunedin, New Zealand
| | - L Mei
- Department of Oral Sciences, Faculty of Dentistry, Sir John Walsh Research Institute, University of Otago, Dunedin, New Zealand
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19
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Bendell J, Falchook G, Sen S, Johnson M, Jerkovic G, Sarapa N, Vilimas R, Kriksciukaite K, Mei L, Wooster R, Bloss J, Thomas A. First in human phase I/IIa study of PEN-866, a heat shock protein 90 (HSP90) ligand – SN38 conjugate for patients with advanced solid tumours: Phase I results. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz244.023] [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: 11/12/2022] Open
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20
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Abstract
Fibroblast growth factor receptor 2 ( FGFR2) in craniofacial bones mediates osteoprogenitor proliferation, differentiation, and apoptosis. The distortion of proper craniofacial bone growth may cause class II and class III skeletal malocclusion and result in compromised function and aesthetics. Here, we investigated the association between variations in FGFR2 and skeletal malocclusions. First, 895 subjects were included in a 2-stage case-control study with independent populations (stage 1: n = 138 class I, 111 class II, and 81 class III; stage 2: n = 279 class I, 187 class II, and 99 class III). Eight candidate single-nucleotide polymorphisms (SNPs) in FGFR2 were screened and validated. Five SNPs (rs2162540, rs2981578, rs1078806, rs11200014, and rs10736303) were found to be associated with skeletal malocclusions (all P < 0.05). That is, rs2162540 was significantly associated with skeletal class II malocclusion, while others were associated with skeletal class III malocclusion. Electrophoretic mobility shift assay and chromatin immunoprecipitation analysis showed that the common genotypes of rs2981578 and rs10736303 contained the binding sites of RUNX2 and SMAD4. Compared with the common genotypes, the minor genotypes at these 2 SNPs decreased the binding affinity and enhancer effect of RUNX2 and SMAD4, as well the levels of FGFR2 expression. In addition, FGFR2 expression contributed positively to osteogenic differentiation in vitro. Thus, we identified FGFR2 as a skeletal malocclusion risk gene, and FGFR2 polymorphisms regulated its transcriptional expression and then osteogenic differentiation.
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Affiliation(s)
- Q. Jiang
- Orthodontic Department, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, Jiangsu, China
| | - L. Mei
- Department of Oral Sciences, Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin, New Zealand
| | - Y. Zou
- Nanjing University School of Medicine, Nanjing, China
| | - Q. Ding
- Nanjing University School of Medicine, Nanjing, China
| | - R.D. Cannon
- Department of Oral Sciences, Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin, New Zealand
| | - H. Chen
- Nanjing University School of Medicine, Nanjing, China
| | - H. Li
- Orthodontic Department, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, Jiangsu, China
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21
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Guan G, Won J, Mei L, Polonowita A. Extensive adipose replacement of the parotid glands: an unusual presentation of sialadenosis. A Case Report and Literature Review. ACTA ACUST UNITED AC 2019. [DOI: 10.1111/ors.12442] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- G. Guan
- Department of Oral Diagnostic and Surgical Sciences, Faculty of Dentistry University of Otago North Dunedin New Zealand
| | - J. Won
- Department of Oral Diagnostic and Surgical Sciences, Faculty of Dentistry University of Otago North Dunedin New Zealand
| | - L. Mei
- Department of Oral Diagnostic and Surgical Sciences, Faculty of Dentistry University of Otago North Dunedin New Zealand
| | - A. Polonowita
- Department of Oral Diagnostic and Surgical Sciences, Faculty of Dentistry University of Otago North Dunedin New Zealand
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22
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Chen JY, Yang J, Zhang Q, Wang W, Ma XB, Mei L, Shen JL, Shen M, Chen XP. [An analysis of the results of video head impulse test in benign paroxysmal vertigo of childhood]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2019; 33:232-236. [PMID: 30813692 DOI: 10.13201/j.issn.1001-1781.2019.03.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Indexed: 11/12/2022]
Abstract
Objective:This study was to analyze the results of video head impulse test (vHIT) of benign paroxysmal vertigo of childhood (BPVC) in order to determine the potential value of vHIT in the diagnosis and treatment for BPVC and to discuss its possible pathogenesis of BPVC. Method:Thirty-six children with BPVC were enrolled. No hearing loss and skull abnormality were found in these children as assessed by pure tone audiometry, acoustic impedance, CT or MRI scan. The vHIT was carried out, and main outcome measures were the gain of vestibulo-ocular reflex, gain asymmetry, and refixation saccades. Eleven healthy children were selected as normal control who came to our hospital for doing a routine checkup and have no history of dizziness. The differences of vHIT results between these two groups were analyzed. Result:①The vHIT results in control group were normal. In all BPVC subjects, abnormalities were detected in 9 patients (25.0%),including vHIT gains decline in 3 patients, abnormal symmetry in 4 patients, and abnormal isolated overt saccades in 2 patients.②The average saccadic gain in different canals of BPVC group was 1.03±0.14, 1.01±0.15, 1.13±0.31, 1.18±0.36, 1.21±0.33, 1.14±0.30 in left horizontal, right horizontal, left anterior, right posterior, right anterior, left posterior canal, respectively; while in normal group, it was 1.14±0.15, 1.18±0.09, 1.16±0.30, 1.18±0.40, 1.34±0.26, 1.30±0.20, respectively. Significant statistical difference was found only in horizontal canals between these two groups (P<0.05). ③Asymmetry of the three pairs of conjugated semicircular canals was 0.04±0.07 (horizontal canal), 0.06±0.04 (left anterior and right posterior canal), 0.06±0.04 (right anterior and left posterior canal) in BPVC group, respectively; while in control group, it was 0.02±0.02, 0.04±0.03, 0.04±0.04,respectively. There was no statistical difference between the two groups (P>0.05). Conclusion:A certain proportion of abnormal peripheral vestibule function in children with BPVC was found. vHIT is a "child friendly," relatively easytouse, and simple tool to evaluate each of the 6 semicircular canals, which may offer some potential clinical information for assessing the vestibule dysfunction for BPVC.
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Affiliation(s)
- J Y Chen
- Department of Otolaryngology Head and Neck Surgery, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine; Institute of Ophthalmology, School of Medicine, Shanghai Jiaotong University; Shanghai key Laboratory of Ear and Nose Disease Transformation, Shanghai, 200092, China
| | - J Yang
- Department of Otolaryngology Head and Neck Surgery, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine; Institute of Ophthalmology, School of Medicine, Shanghai Jiaotong University; Shanghai key Laboratory of Ear and Nose Disease Transformation, Shanghai, 200092, China
| | - Q Zhang
- Department of Otolaryngology Head and Neck Surgery, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine; Institute of Ophthalmology, School of Medicine, Shanghai Jiaotong University; Shanghai key Laboratory of Ear and Nose Disease Transformation, Shanghai, 200092, China
| | - W Wang
- Department of Otolaryngology Head and Neck Surgery, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine; Institute of Ophthalmology, School of Medicine, Shanghai Jiaotong University; Shanghai key Laboratory of Ear and Nose Disease Transformation, Shanghai, 200092, China
| | - X B Ma
- Department of Otolaryngology Head and Neck Surgery, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine; Institute of Ophthalmology, School of Medicine, Shanghai Jiaotong University; Shanghai key Laboratory of Ear and Nose Disease Transformation, Shanghai, 200092, China
| | - L Mei
- Department of Otolaryngology Head and Neck Surgery, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine; Institute of Ophthalmology, School of Medicine, Shanghai Jiaotong University; Shanghai key Laboratory of Ear and Nose Disease Transformation, Shanghai, 200092, China
| | - J L Shen
- Department of Otolaryngology Head and Neck Surgery, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine; Institute of Ophthalmology, School of Medicine, Shanghai Jiaotong University; Shanghai key Laboratory of Ear and Nose Disease Transformation, Shanghai, 200092, China
| | - M Shen
- Department of Otolaryngology Head and Neck Surgery, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine; Institute of Ophthalmology, School of Medicine, Shanghai Jiaotong University; Shanghai key Laboratory of Ear and Nose Disease Transformation, Shanghai, 200092, China
| | - X P Chen
- Department of Otolaryngology Head and Neck Surgery, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine; Institute of Ophthalmology, School of Medicine, Shanghai Jiaotong University; Shanghai key Laboratory of Ear and Nose Disease Transformation, Shanghai, 200092, China
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23
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Zhao P, Mei L. A clinical study of paraspinal nerve block on treatment of herpes zoster under ultrasonic guidance. Neurochirurgie 2019; 65:382-386. [PMID: 31348920 DOI: 10.1016/j.neuchi.2019.06.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Revised: 04/09/2019] [Accepted: 06/10/2019] [Indexed: 10/26/2022]
Abstract
OBJECTIVE To study the ultrasound guiding by methylenum coeruleum thoracic paravertebral block analgesia effect and promote healing of herpes zoster. METHODS A total of 87 patients with herpes zoster were randomly divided into an observation group and a control group, and the two groups received the same treatment including antiviral drug, nerve nutrition, in order to increase the body's resistance. The observation group were given thoracic paravertebral block with methylenum coeruleum guided by ultrasound, recorded visual analogue scale (VAS) of the two groups of patients for their hypersensitivity to pain 1d, 3d, 1 week, 2 weeks, 1 month after treatment, skin lesion healing time, incidence of postherpetic neuralgia (PHN), patients' satisfaction, etc. RESULTS: After administration of thoracic paravertebral block with methylenum coeruleum, VAS of the observation group expectedly decreased. At the same time, the VAS in the observation group was significantly lower than that in the control group, the skin healing time in the observation group was obviously shorter, and the incidence of PHN was lower than that in the control group. The satisfaction of observation group patients was higher than that in the control group (P<0.05). CONCLUSION To implement thoracic paravertebral block with methylenum coeruleum guided by ultrasound can help reduce the degree of hypersensitivity to pain, promoting the healing of herpes zoster could reduce the incidence of PHN, greatly improving patients' satisfaction.
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Affiliation(s)
- P Zhao
- Department of Anesthesiology, People's Hospital of Weifang, Weifang 261000, China
| | - L Mei
- Department of Anesthesiology, People's Hospital of Weifang, Weifang 261000, China.
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24
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Shi Q, Xia L, Zhou J, Wang Z, Sheng L, Wang G, Wang L, Cheng X, Wang F, Kong F, Zhao F, Li X, Ye B, Mei L, Liu Y, Pan L, Xie J, Cheng G, Li X. Apatinib plus S-1 as second-line or later line treatment for advanced squamous cell lung carcinoma. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy425.013] [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: 11/15/2022] Open
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25
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Huang H, Hong JY, Wu YJ, Wang EY, Liu ZQ, Cheng BH, Mei L, Liu ZG, Yang PC, Zheng PY. Vitamin D receptor interacts with NLRP3 to restrict the allergic response. Clin Exp Immunol 2018; 194:17-26. [PMID: 30260469 DOI: 10.1111/cei.13164] [Citation(s) in RCA: 9] [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] [Accepted: 05/30/2018] [Indexed: 01/20/2023] Open
Abstract
Vitamin D receptor (VDR) mediates various biochemical activities between the cytoplasm and the nucleus in the cell. The nucleotide-binding, oligomerization domain (NOD)-like receptor family, pyrin domain containing 3 (NLRP3) protein is involved in the T helper type 2 (Th2) response. This study tests a hypothesis that VDR interacts with NLRP3 to restrict the Th2-biased response. In this study, VDR-/- mice and WT (WT) mice were used. Th2 cell differentiation between VDR-/- mice and WT mice was observed. We observed that CD4+ T cell activation was higher in VDR-/- mice. The VDR-/-CD4+ T cells were prone to Th2 polarization. VDR-/- mice produced more immunoglobulin (Ig)E. VDR bound NLRP3 to prevent Th2 differentiation by restricting IL4 gene transcription. Th2 biased inflammation spontaneously developed in the intestine of VDR-/- mice. In conclusion, VDR binds NLRP3 to restrict IL4 gene transcription and prevent biased Th2 polarization.
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Affiliation(s)
- H Huang
- Department of Gastroenterology, the Fifth Hospital, Zhengzhou University, Zhengzhou, China
| | - J-Y Hong
- The Research Center of Allergy and Immunology, Shenzhen University Faculty of Medicine, Shenzhen, China
| | - Y-J Wu
- The Research Center of Allergy and Immunology, Shenzhen University Faculty of Medicine, Shenzhen, China.,Longgang ENT Hospital, Shenzhen ENT Institute, Shenzhen, China
| | - E-Y Wang
- The Research Center of Allergy and Immunology, Shenzhen University Faculty of Medicine, Shenzhen, China
| | - Z-Q Liu
- The Research Center of Allergy and Immunology, Shenzhen University Faculty of Medicine, Shenzhen, China.,Longgang ENT Hospital, Shenzhen ENT Institute, Shenzhen, China.,Brain-Body Institute, McMaster University, Hamilton, ON, Canada
| | - B-H Cheng
- The Research Center of Allergy and Immunology, Shenzhen University Faculty of Medicine, Shenzhen, China.,Longgang ENT Hospital, Shenzhen ENT Institute, Shenzhen, China
| | - L Mei
- Department of Gastroenterology, the Fifth Hospital, Zhengzhou University, Zhengzhou, China
| | - Z-G Liu
- The Research Center of Allergy and Immunology, Shenzhen University Faculty of Medicine, Shenzhen, China
| | - P-C Yang
- Department of Gastroenterology, the Fifth Hospital, Zhengzhou University, Zhengzhou, China.,The Research Center of Allergy and Immunology, Shenzhen University Faculty of Medicine, Shenzhen, China
| | - P-Y Zheng
- Department of Gastroenterology, the Fifth Hospital, Zhengzhou University, Zhengzhou, China
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26
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Sun SL, Zhu ZD, Zhang JL, Mei L. Outbreak of Choanephora Stem Rot Caused by Choanephora cucurbitarum on Quinoa (Chenopodium quinoa) in China. Plant Dis 2018; 102:PDIS12171922PDN. [PMID: 30173631 DOI: 10.1094/pdis-12-17-1922-pdn] [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] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Affiliation(s)
- S-L Sun
- Institute of Crop Sciences/National Key Facilities for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R. China
| | - Z-D Zhu
- Institute of Crop Sciences/National Key Facilities for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R. China
| | - J-L Zhang
- Beijing Plant Protection Station, Beijing 100029, P.R. China
| | - L Mei
- Beijing Agricultural Technology Extension Centre, Beijing 100029, P.R. China
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Mei L, Chen XP, Yang J. [The study of detection and etiology of unilateral deafness in children]. Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018; 32:1252-1254. [PMID: 30282170 DOI: 10.13201/j.issn.1001-1781.2018.16.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Indexed: 06/08/2023]
Abstract
Objective:To explore the detection approach and aetiology of single-side deafness(SSD) in children and provide evidence for diagnoses and treatment. Method:A retrospective study was performed. Medical history and radiological data of children with unilateral deafness were analyzed. Result:The mean age at diagnosis was 6 years old. The mean age at diagnosis was 7.7 month because of failure of universal newborn hearing screening. Inner ear malformations were identified in 80.6% of cases. Cochlear nerve deficiency(CND) was observed in almost 77.8% of our cases, accounts for 96.6% in children with inner ear malformations. Conclusion:The children with SSD could be early detected by UNHS. CND is the main aetiology for SSD. MRI should be the first image choice when SSD children was diagnosed.
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Affiliation(s)
- L Mei
- Hearing and Vertigo Center, Xinhua Hospital, Medical School of Shanghai Jiaotong University, Shanghai, 200092, China
| | - X P Chen
- Hearing and Vertigo Center, Xinhua Hospital, Medical School of Shanghai Jiaotong University, Shanghai, 200092, China
| | - J Yang
- Hearing and Vertigo Center, Xinhua Hospital, Medical School of Shanghai Jiaotong University, Shanghai, 200092, China
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Mei L, Zhan C, Zhang EE. In Vivo Monitoring of Circadian Clock Gene Expression in the Mouse Suprachiasmatic Nucleus Using Fluorescence Reporters. J Vis Exp 2018. [PMID: 30035762 DOI: 10.3791/56765] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
This technique combines optical fiber mediated fluorescence recordings with the precise delivery of recombinant adeno-associated virus based gene reporters. This new and easy to use in vivo fluorescence monitoring system was developed to record the transcriptional rhythm of the clock gene, Cry1, in the suprachiasmatic nucleus (SCN) of freely moving mice. To do so, a Cry1 transcription fluorescence reporter was designed and packaged into Adeno-associated virus. Purified, concentrated virus was injected into the mouse SCN followed by the insertion of an optic fiber, which was then fixed onto the surface of the brain. The animals were returned to their home cages and allowed a 1-month post-operative recovery period to ensure sufficient reporter expression. Fluorescence was then recorded in freely moving mice via an in vivo monitoring system that was constructed at our institution. For the in vivo recording system, a 488 nm laser was coupled with a 1 × 4 beam-splitter that divided the light into four laser excitation outputs of equal power. This setup enabled us to record from four animals simultaneously. Each of the emitted fluorescence signals was collected via a photomultiplier tube and a data acquisition card. In contrast to the previous bioluminescence in vivo circadian clock recording technique, this fluorescence in vivo recording system allowed the recording of circadian clock gene expression during the light cycle.
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Affiliation(s)
- Long Mei
- PTN Joint Graduate Program, School of Life Sciences, Peking University; National Institute of Biological Sciences, Beijing
| | - Cheng Zhan
- National Institute of Biological Sciences, Beijing
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Deng Y, Li M, Mei L, Cong LM, Liu Y, Zhang BB, He CY, Zheng PY, Yuan JL. Manipulation of intestinal dysbiosis by a bacterial mixture ameliorates loperamide-induced constipation in rats. Benef Microbes 2018; 9:453-464. [PMID: 29633634 DOI: 10.3920/bm2017.0062] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Constipation has a significant influence on quality of life. Patients with constipation have slow waves in their gastrointestinal smooth muscles and less faecal water contents, which are closely associated with down-regulation of the interstitial cells of Cajal (ICC) in the gastrointestinal muscles and the aquaporin protein AQP3 expressed in colon epithelial cells. Recent studies supported that patients with constipation have altered intestinal microbial structures compared with healthy controls. Intestinal dysbiosis might be one possible pathophysiological mechanism causing constipation. Bacterial strains, such as Lactobacillus spp., have shown many beneficial effects on the amelioration of constipation. However, few studies reported the structural changes of intestinal microbiota post-intervention of probiotics. In this study, a bacterial mixture was administrated to rats with loperamide-induced constipation. Effects of the bacterial mixture on small intestine transit (SIT), faecal water content, and the intestinal microbiome in rats were evaluated. Meanwhile, we investigated several factors involved in signalling pathways that regulate function of ICC and expression of AQP3 to discuss the possible underlying molecular mechanisms. Intervention of the bacterial mixture improved SIT and faecal water content in constipated rats. The up-regulation of C-kit/SP signalling pathways in ICC and AQP3 significantly contributed to improvements. These changes were closely associated with the manipulation of intestinal dysbiosis in constipated rats. Furthermore, our results revealed the important role of intestinal microbiota in affecting gut motility through regulation of serotonin biosynthesis. This monoamine neurotransmitter, secreted from enterochromaffin cells, up-regulated both substance P/neurokinin 1 receptors pathway of ICC and the expression of AQP3 in intestinal epithelial cells. Our study suggested that the disrupted microbiome in patients could be a potential therapeutic target for the improvement of constipation.
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Affiliation(s)
- Y Deng
- 1 Department of Microecology, College of Basic Medical Science, Dalian Medical University, Dalian, China P.R
| | - M Li
- 1 Department of Microecology, College of Basic Medical Science, Dalian Medical University, Dalian, China P.R
| | - L Mei
- 2 Department of Gastroenterology, the Second Affiliated Hospital of Zhengzhou University, Zhengzhou, China P.R
| | - L M Cong
- 1 Department of Microecology, College of Basic Medical Science, Dalian Medical University, Dalian, China P.R
| | - Y Liu
- 1 Department of Microecology, College of Basic Medical Science, Dalian Medical University, Dalian, China P.R
| | - B B Zhang
- 3 Laboratory of Pathogenic Biology, College of Basic Medical Science, Dalian Medical University, Dalian, China P.R
| | - C Y He
- 1 Department of Microecology, College of Basic Medical Science, Dalian Medical University, Dalian, China P.R
| | - P Y Zheng
- 2 Department of Gastroenterology, the Second Affiliated Hospital of Zhengzhou University, Zhengzhou, China P.R
| | - J L Yuan
- 1 Department of Microecology, College of Basic Medical Science, Dalian Medical University, Dalian, China P.R
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Xu J, Mei L, Liu L, Wang K, Zhou Z, Zheng J. Early assessment of response to chemotherapy in lung cancer using dynamic contrast-enhanced MRI: a proof-of-concept study. Clin Radiol 2018; 73:625-631. [PMID: 29571650 DOI: 10.1016/j.crad.2018.02.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Accepted: 02/16/2018] [Indexed: 10/17/2022]
Abstract
AIM To evaluate the early treatment response to chemotherapy in patients with lung cancer using dynamic contrast-enhanced (DCE) magnetic resonance imaging (MRI). MATERIALS AND METHODS Twenty-two patients with lung cancer underwent DCE-MRI before chemotherapy and 1 week after the start of the first course of chemotherapy. Pharmacokinetic parameters (Ktrans, Kep, and Ve) derived from DCE MRI were generated using the post-processing platform. These parameters and corresponding changes were compared between responders and non-responders after treatment using Student's t or Mann-Whitney U-tests. Diagnostic efficiency of kinetic parameters in differentiating responders from non-responders after 1 week of chemotherapy was also investigated. RESULTS Thirteen responders after 1 week of chemotherapy had a significant decrease in Ktrans and Ve compared with the pretreatment value (p<0.05), and had no significant changes in Kep (p>0.05). Nine non-responders had no significant changes in Ktrans, Kep, and Ve compared with the pretreatment value (p>0.05). Changes in Ktrans (ΔKtrans) were significantly larger in responders than that in non-responders (p<0.05). Changes in Ve and Kep (ΔVe andΔKep) were without statistical significance after treatment between responders and non-responders (p>0.05). The cut-off value of ΔKtrans in best predicting tumour's chemotherapeutic response was 0.032/min and the corresponding AUC (area under the curve), sensitivity, specificity, and accuracy were 0.821, 84.62%, 77.78%, and 81.82%, respectively. CONCLUSION DCE MRI may be useful for evaluating the early response to chemotherapy in patients with lung cancer, but larger, more definitive studies are needed.
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Affiliation(s)
- J Xu
- Department of Radiology, Affiliated Wujin Hospital of Jiangsu University, Changzhou, Jiangsu, China; Department of Radiology, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing, Jiangsu, China
| | - L Mei
- Department of Radiology, Affiliated Wujin Hospital of Jiangsu University, Changzhou, Jiangsu, China
| | - L Liu
- Department of Radiology, Affiliated Wujin Hospital of Jiangsu University, Changzhou, Jiangsu, China
| | - K Wang
- Department of Radiology, Affiliated Wujin Hospital of Jiangsu University, Changzhou, Jiangsu, China
| | - Z Zhou
- Department of Radiology, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing, Jiangsu, China.
| | - J Zheng
- Department of Radiology, Affiliated Wujin Hospital of Jiangsu University, Changzhou, Jiangsu, China.
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Yao FF, Zheng PY, Huang H, Bai LM, Ding YR, Mei L, Liu SM. [Effects of Lactobacillus paracasei N1115 combined with fructooligosaccharides on non-alcoholic fatty liver disease induced by high-fat diet in mice]. Zhonghua Gan Zang Bing Za Zhi 2017; 25:927-933. [PMID: 29325294 DOI: 10.3760/cma.j.issn.1007-3418.2017.12.008] [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 investigate the effects of Lactobacillus paracasei N1115 combined with fructooligosaccharides (FOS) on non-alcoholic fatty liver disease (NAFLD) in mice and its possible mechanism. Methods: A total of 50 male C57 mice were randomly and equally divided into five experimental groups. Group 1 received a normal diet (ND). Other four groups received a high-fat diet (HFD) to establish NAFLD models. In addition to HFD, group 3 received Lactobacillus paracasei N1115 (2.2×10(9) CFU/mL), group 4 received FOS (4 g/kg per day), and group 5 received Lactobacillus paracasei N1115 (2.2×10(9) CFU/mL) and FOS (4 g/kg per day). All groups received continuous intervention for 16 weeks. The following indices were measured for all groups after intervention: general condition, the levels of fasting blood glucose, insulin, and lipopolysaccharide (LPS), and the levels of tumor necrosis factor (TNF)-α, interleukin (IL)-1β, IL-6, and interferon (IFN)-γ in the serum and liver. The mRNA levels of Toll-like receptor (TLR)4, nuclear factor (NF)-κb, insulin receptor (InsR), and insulin receptor substrate (IRS)-1 were measured by real-time RT-PCR. The data were subjected to one-way analysis of variance and comparison between groups was made by Bonferroni method. Results: Compared with group 2, groups 3, 4, and 5 had significantly lower body weight, Lee's index, liver index, and the levels of blood glucose and insulin resistance (P < 0.05). The serum level of LPS in group 2 was significantly higher than that in the other experimental groups (group 1: 8.80 ± 0.85 U/L, group 3: 12.31 ± 1.01 U/L, group 4: 12.27 ± 0.98 U/L, and group 5: 10.17 ± 0.79 U/L vs group 2: 15.45 ± 1.14 U/L, F = 55.117, P < 0.001). The levels of TNF-α, IL-1β, IL-6, and IFN-γ in the serum and liver in group 2 were also significantly higher than those in the other groups (P < 0.05). Group 2 had significantly higher mRNA levels of TLR4 and NF-κb in the liver than the other groups (F = 82.933, P < 0.001; F = 149.033, P < 0.001); however, it had significantly lower mRNA levels of InsR and IRS-1 in the liver than the other groups (F = 33.347, P < 0.001; F = 70.225, P < 0.001). Conclusion: Lactobacillus paracasei N1115 combined with FOS can reduce the level of LPS in the blood circulation, inhibit activation of the LPS/TLR4 signaling pathway, and reduce the release of inflammatory factor and the body's insulin resistance, so it can relieve NAFLD.
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Affiliation(s)
- F F Yao
- Department of Gastroenterology, Institute of Clinical Nutrition and Medical Microecology, the Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
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Winkelman J, Mei L, Schoerning L, Gonenc A. Disrupted white matter integrity in insomnia and major depressive disorder: correlations with subjective and objective sleep parameters. Sleep Med 2017. [DOI: 10.1016/j.sleep.2017.11.1022] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Bottary R, Mei L, Schoerning L, Jensen J, Winkelman J. Depression severity, but not objective or subjective sleep disturbance, mediates glutamate reductions in the ACC in major depressive disorder. Sleep Med 2017. [DOI: 10.1016/j.sleep.2017.11.1021] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Balasubramanian G, Sharma T, Kern M, Mei L, Sanvanson P, Shaker R. Characterization of pharyngeal peristaltic pressure variability during volitional swallowing in healthy individuals. Neurogastroenterol Motil 2017; 29:10.1111/nmo.13119. [PMID: 28635131 PMCID: PMC6757324 DOI: 10.1111/nmo.13119] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [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] [Indexed: 12/13/2022]
Abstract
BACKGROUND Recent technological advances incorporated in high resolution manometry have justifiably heightened interest in manometric evaluation of the pharynx. Despite this interest, from both physiologic and clinical perspective there remain a number of unanswered questions regarding the magnitude of variability of pharyngeal pressure phenomena. Therefore, the aim of the present study was to characterize in healthy individuals the inter-subject and recording-site specific variability of pharyngeal peristaltic pressure phenomena. METHODS We studied 32 healthy subjects (age: 21-83 years,20 under 35 years) during dry,5 and 10 mL water swallows ×3. Pharyngeal peristaltic pressures were recorded using a high resolution (HR) manometric system and a catheter assembly with 36 circumferential sensors spaced at 1 cm intervals positioned trans-nasally to traverse the pharynx, UES and proximal esophagus. KEY RESULTS Both site-specific pressure data and the Pharyngeal contractile integral (PhCI) showed wide dispersion ranging between values under 50 mm Hg to over 300 mm Hg and 100-600 mm Hg/cm/s,respectively. There was also wide range of dispersion of data for both the standard deviations and the coefficient of variation for all sites (P=.001). The coefficient of variation for PhCI ranged between 0.02 and 0.25 representing data dispersion of 2-25 percent of the mean among subjects (P=.001). Position, age and volume of swallowed fluid did not influence the magnitude of variability. CONCLUSIONS Deglutitive Pharyngeal peristalsis generates pressures with significant degree of site-related and inter-subject variability. This variability is not influenced by age, position and volume of swallowed fluid.
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Affiliation(s)
- G. Balasubramanian
- Division of Gastroenterology and Hepatology; Medical College of Wisconsin; Milwaukee WI USA
| | - T. Sharma
- Division of Gastroenterology and Hepatology; Medical College of Wisconsin; Milwaukee WI USA
| | - M. Kern
- Division of Gastroenterology and Hepatology; Medical College of Wisconsin; Milwaukee WI USA
| | - L. Mei
- Division of Gastroenterology and Hepatology; Medical College of Wisconsin; Milwaukee WI USA
| | - P. Sanvanson
- Division of Gastroenterology and Hepatology; Medical College of Wisconsin; Milwaukee WI USA
| | - R. Shaker
- Division of Gastroenterology and Hepatology; Medical College of Wisconsin; Milwaukee WI USA
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Zhang X, Ye M, Li C, Hu Q, Du M, Wang X, Gong Z, Zhang D, Hong Q, Hu J, Mei L, Hou Y, Zhang X. A comparison of Bronchial Washing Fluid (BWF) and histologic samples in the analysis of EGFR mutation in NSCLC patients. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx380.036] [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: 11/12/2022] Open
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Yu H, Yan H, Li J, Li Z, Zhang X, Ma Y, Mei L, Liu C, Cai L, Wang Q, Zhang F, Iwata N, Ikeda M, Wang L, Lu T, Li M, Xu H, Wu X, Liu B, Yang J, Li K, Lv L, Ma X, Wang C, Li L, Yang F, Jiang T, Shi Y, Li T, Zhang D, Yue W. Common variants on 2p16.1, 6p22.1 and 10q24.32 are associated with schizophrenia in Han Chinese population. Mol Psychiatry 2017; 22:954-960. [PMID: 27922604 DOI: 10.1038/mp.2016.212] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Revised: 09/15/2016] [Accepted: 10/14/2016] [Indexed: 02/05/2023]
Abstract
Many schizophrenia susceptibility loci have been identified through genome-wide association studies (GWASs) in European populations. However, until recently, schizophrenia GWASs in non-European populations were limited to small sample sizes and have yielded few loci associated with schizophrenia. To identify genetic risk variations for schizophrenia in the Han Chinese population, we performed a two-stage GWAS of schizophrenia comprising 4384 cases and 5770 controls, followed by independent replications of 13 single-nucleotide polymorphisms in an additional 4339 schizophrenia cases and 7043 controls of Han Chinese ancestry. Furthermore, we conducted additional analyses based on the results in the discovery stage. The combined analysis confirmed evidence of genome-wide significant associations in the Han Chinese population for three loci, at 2p16.1 (rs1051061, in an exon of VRK2, P=1.14 × 10-12, odds ratio (OR)=1.17), 6p22.1 (rs115070292 in an intron of GABBR1, P=4.96 × 10-10, OR=0.77) and 10q24.32 (rs10883795 in an intron of AS3MT, P=7.94 × 10-10, OR=0.87; rs10883765 at an intron of ARL3, P=3.06 × 10-9, OR=0.87). The polygenic risk score based on Psychiatric Genomics Consortium schizophrenia GWAS data modestly predicted case-control status in the Chinese population (Nagelkerke R2: 1.7% ~5.7%). Our pathway analysis suggested that neurological biological pathways such as GABAergic signaling, dopaminergic signaling, cell adhesion molecules and myelination pathways are involved in schizophrenia. These findings provide new insights into the pathogenesis of schizophrenia in the Han Chinese population. Further studies are needed to establish the biological context and potential clinical utility of these findings.
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Affiliation(s)
- H Yu
- Tsinghua-Peking Joint Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, China
- Department of Biochemistry, Institute of Mental Health, The Sixth Hospital, Peking University, Beijing, China
- Key Laboratory of Mental Health, Ministry of Health &National Clinical Research Center for Mental Disorders (Peking University), Beijing, China
| | - H Yan
- Department of Biochemistry, Institute of Mental Health, The Sixth Hospital, Peking University, Beijing, China
- Key Laboratory of Mental Health, Ministry of Health &National Clinical Research Center for Mental Disorders (Peking University), Beijing, China
| | - J Li
- Department of Biochemistry, Institute of Mental Health, The Sixth Hospital, Peking University, Beijing, China
- Key Laboratory of Mental Health, Ministry of Health &National Clinical Research Center for Mental Disorders (Peking University), Beijing, China
| | - Z Li
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders (Ministry of Education) and the Collaborative Innovation Center for Brain Science, Shanghai Jiao Tong University, Shanghai, China
- Institute of Social Cognitive and Behavioral Sciences, Shanghai Jiao Tong University, Shanghai, China
- Institute of Neuropsychiatric Science and Systems Biological Medicine, Shanghai Jiao Tong University, Shanghai, China
- The Affiliated Hospital of Qingdao University, Qingdao, China
| | - X Zhang
- Brainnetome Center, Institute of Automation, Chinese Academy of Sciences, Beijing, China
- National Laboratory of Pattern Recognition, Institute of Automation, Chinese Academy of Sciences, Beijing, China
| | - Y Ma
- Department of Biochemistry, Institute of Mental Health, The Sixth Hospital, Peking University, Beijing, China
- Key Laboratory of Mental Health, Ministry of Health &National Clinical Research Center for Mental Disorders (Peking University), Beijing, China
| | - L Mei
- Department of Biochemistry, Institute of Mental Health, The Sixth Hospital, Peking University, Beijing, China
- Key Laboratory of Mental Health, Ministry of Health &National Clinical Research Center for Mental Disorders (Peking University), Beijing, China
| | - C Liu
- Department of Psychiatry, the University of Melbourne, Parkville, VIC, Australia
| | - L Cai
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders (Ministry of Education) and the Collaborative Innovation Center for Brain Science, Shanghai Jiao Tong University, Shanghai, China
| | - Q Wang
- Mental Health Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China
- State Key Laboratory of Biotherapy, Psychiatric laboratory, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - F Zhang
- Department of Clinical Psychology, Wuxi Mental Health Center of Nanjing Medical University, Wuxi, China
| | - N Iwata
- Department of Psychiatry, Fujita Health University School of Medicine, Aichi, Japan
| | - M Ikeda
- Department of Psychiatry, Fujita Health University School of Medicine, Aichi, Japan
| | - L Wang
- Department of Biochemistry, Institute of Mental Health, The Sixth Hospital, Peking University, Beijing, China
- Key Laboratory of Mental Health, Ministry of Health &National Clinical Research Center for Mental Disorders (Peking University), Beijing, China
| | - T Lu
- Department of Biochemistry, Institute of Mental Health, The Sixth Hospital, Peking University, Beijing, China
- Key Laboratory of Mental Health, Ministry of Health &National Clinical Research Center for Mental Disorders (Peking University), Beijing, China
| | - M Li
- Department of Rheumatology and Immunology, Shanghai Changzheng Hospital, the Second Military Medical University, Shanghai, China
| | - H Xu
- Department of Rheumatology and Immunology, Shanghai Changzheng Hospital, the Second Military Medical University, Shanghai, China
| | - X Wu
- Department of Rheumatology and Immunology, Shanghai Changzheng Hospital, the Second Military Medical University, Shanghai, China
| | - B Liu
- Brainnetome Center, Institute of Automation, Chinese Academy of Sciences, Beijing, China
- National Laboratory of Pattern Recognition, Institute of Automation, Chinese Academy of Sciences, Beijing, China
| | - J Yang
- Tianjin Anding Hospital, Tianjin, China
| | - K Li
- Hebei Mental Health Center, Baoding, Hebei, China
| | - L Lv
- The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan, China
| | - X Ma
- Beijing Anding Hospital, Capital Medical University, Beijing, China
| | - C Wang
- Beijing Anding Hospital, Capital Medical University, Beijing, China
| | - L Li
- The Second Xiangya Hospital of Central South University, Changsha, China
| | - F Yang
- Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - T Jiang
- Brainnetome Center, Institute of Automation, Chinese Academy of Sciences, Beijing, China
- National Laboratory of Pattern Recognition, Institute of Automation, Chinese Academy of Sciences, Beijing, China
| | - Y Shi
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders (Ministry of Education) and the Collaborative Innovation Center for Brain Science, Shanghai Jiao Tong University, Shanghai, China
- Institute of Social Cognitive and Behavioral Sciences, Shanghai Jiao Tong University, Shanghai, China
- Institute of Neuropsychiatric Science and Systems Biological Medicine, Shanghai Jiao Tong University, Shanghai, China
- The Affiliated Hospital of Qingdao University, Qingdao, China
| | - T Li
- Mental Health Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China
- State Key Laboratory of Biotherapy, Psychiatric laboratory, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - D Zhang
- Department of Biochemistry, Institute of Mental Health, The Sixth Hospital, Peking University, Beijing, China
- Key Laboratory of Mental Health, Ministry of Health &National Clinical Research Center for Mental Disorders (Peking University), Beijing, China
- Peking-Tsinghua Joint Center for Life Sciences/PKU-IDG/McGovern Institute for Brain Research, Peking University, Beijing, China
| | - W Yue
- Department of Biochemistry, Institute of Mental Health, The Sixth Hospital, Peking University, Beijing, China
- Key Laboratory of Mental Health, Ministry of Health &National Clinical Research Center for Mental Disorders (Peking University), Beijing, China
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Araújo I, Paula A, Alonso R, Mei L, Taparelli J, Stipp R, Puppin-Rontani R. S. mutans virulence decreased by a novel antimicrobial monomer-containing composite. Dent Mater 2017. [DOI: 10.1016/j.dental.2017.08.129] [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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Ruan JY, Zhu Q, Mei L, Wang H. Expressions of H2AX in cervical squamous carcinoma and their clinical significances. EUR J GYNAECOL ONCOL 2017; 38:65-68. [PMID: 29767867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
OBJECTIVE To evaluate the expression and clinical significance of H2AX in cervical squamous carcinoma. MATERIALS AND METHODS The expression of H2AX in the cervical squamous carcinoma of 37 patients and in the normal cervical tissue of 15 patients was detected by immuneohistochemical method. Chi-square, correlation analysis, and Kaplan-Meier were utilized to analyze the data. RESULTS The positive expression rate of H2AX in cervical squamous carcinoma was higher than that in normal cervical tissues (p = 0.016) . The expression of H2AX was negatively correlated with FIGO staging, vaginal invasion, and parametrial infiltration (p < 0.05). Survival analysis showed the expression intensity of H2AX had no significant effect on the prognosis. CONCLUSION H2AX was an anticancer protein for cervical squamous carcinoma.
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Su W, Zhu P, Wang R, Wu Q, Wang M, Zhang X, Mei L, Tang J, Kumar M, Wang X, Su L, Dong N. Congenital heart diseases and their association with the variant distribution features on susceptibility genes. Clin Genet 2016; 91:349-354. [PMID: 27426723 DOI: 10.1111/cge.12835] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 07/11/2016] [Accepted: 07/13/2016] [Indexed: 01/07/2023]
Abstract
Congenital heart disease (CHD), one of the causes of childhood morbidity and mortality, is mainly triggered by a combination of environmental and genetic factors. Several susceptible genes, such as NKX2-5, GATA4 and TBX5, have been reported as closely related to heart and vessel development. CHD subtypes are classified into diverse clinical phenotypes, such as atrial septal defects (ASD), ventricular septal defects (VSD), tetralogy of Fallot (TOF), and Holt-Oram syndrome (HOS). Here, we summarize the associations of the genetic variants in these three genes with CHD subtypes. CHD-associated variants of NKX2-5 locate mainly in the tinman domain and the homeodomain. Mutations in the homeodomain are correlated with ASD and atrioventricular (AV) block subtypes. VSD-associated variants of GATA4 are mainly at its terminal ends. Variants of TBX5 gene are primarily in exons 3, 4, 5 and 7 and highly associated with HOS subtype. Hence, the variant distribution of NKX2-5, GATA4 and TBX5 are tightly associated with particular CHD subtypes. Further structure-modelling analysis revealed that these mutated amino acid residuals maintain their DNA-binding ability and structural stability. Therefore structural features of these genes may be used to predict the high risk of CHD subtypes in infants.
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Affiliation(s)
- W Su
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - P Zhu
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - R Wang
- Key Laboratory of Molecular Biophysics of Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Q Wu
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - M Wang
- Key Laboratory of Molecular Biophysics of Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - X Zhang
- Key Laboratory of Molecular Biophysics of Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - L Mei
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - J Tang
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - M Kumar
- Key Laboratory of Molecular Biophysics of Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - X Wang
- Key Laboratory of Molecular Biophysics of Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - L Su
- Key Laboratory of Molecular Biophysics of Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - N Dong
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Affiliation(s)
- C. Loke
- Sir John Walsh Research Institute; University of Otago; Dunedin New Zealand
| | - J. Lee
- Sir John Walsh Research Institute; University of Otago; Dunedin New Zealand
| | - S. Sander
- Department of Chemistry; University of Otago; Dunedin New Zealand
| | - L. Mei
- Sir John Walsh Research Institute; University of Otago; Dunedin New Zealand
| | - M. Farella
- Sir John Walsh Research Institute; University of Otago; Dunedin New Zealand
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Mei L, Hou Q, Fang F, Wang H. The antibody-based CA125-targeted maintenance therapy for the epithelial ovarian cancer: a meta-analysis. EUR J GYNAECOL ONCOL 2016; 37:455-460. [PMID: 29894066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
OBJECTIVES To assess the effect and toxicity of CA125-targeted antibody used as maintenance therapy for advanced epithelial ovarian cancer (EOC). MATERIALS AND METHODS Two reviewers searched PubMed, Medline, Embase, VIP databases, and the references of selected articles for randomized controlled trials comparing maintenance CA125-targeted antibody treatment with placebo/observation. One-, two-, three-, and five-year overall survival (OS) and progression free survival (PFS) were collected. Incidence and severity of adverse events were extracted. Meta-analysis of combined risk ratio (RR) for OS , PFS, and toxicity were conducted. RESULTS Four trials including 1,259 women were identified. Meta-analysis showed the combined RR was 1.02 (95% CI, 0.85-1.22) for three-year OS and 0.98 (95% CI, 0.70-1.39) for the three-year PFS. This review found that abagovomab and oregovomab caused toxicity no more than placebo. CONCLUSIONS CA125-targeted antibody used as maintenance therapy alone is not more effective than placebo but they were safe as maintenance therapy.
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Yang Z, Zhou K, Liu H, Wu A, Mei L, Liu Q. SfDredd, a Novel Initiator Caspase Possessing Activity on Effector Caspase Substrates in Spodoptera frugiperda. PLoS One 2016; 11:e0151016. [PMID: 26977926 PMCID: PMC4792459 DOI: 10.1371/journal.pone.0151016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Accepted: 02/23/2016] [Indexed: 01/11/2023] Open
Abstract
Sf9, a cell line derived from Spodoptera frugiperda, is an ideal model organism for studying insect apoptosis. The first notable study that attempted to identify the apoptotic pathway in Sf9 was performed in 1997 and included the discovery of Sf-caspase-1, an effector caspase of Sf9. However, it was not until 2013 that the first initiator caspase in Sf9, SfDronc, was discovered, and the apoptotic pathway in Sf9 became clearer. In this study, we report another caspase of Sf9, SfDredd. SfDredd is highly similar to insect initiator caspase Dredd homologs. Experimentally, recombinant SfDredd underwent autocleavage and exhibited different efficiencies in cleavage of synthetic caspase substrates. This was attributed to its caspase activity for the predicted active site mutation blocked the above autocleavage and synthetic caspase substrates cleavage activity. SfDredd was capable of not only cleaving Sf-caspase-1 in vitro but also cleaving Sf-caspase-1 and inducing apoptosis when it was co-expressed with Sf-caspase-1 in Sf9 cells. The protein level of SfDredd was increased when Sf9 cells were treated by Actinomycin D, whereas silencing of SfDredd reduced apoptosis and Sf-caspase-1 cleavage induced by Actinomycin D treatment. These results clearly indicate that SfDredd functioned as an apoptotic initiator caspase. Apoptosis induced in Sf9 cells by overexpression of SfDredd alone was not as obvious as that induced by SfDronc alone, and the cleavage sites of Sf-caspase-1 for SfDredd and SfDronc are different. In addition, despite sharing a sequence homology with initiator caspases and possessing weak activity on initiator caspase substrates, SfDredd showed strong activity on effector caspase substrates, making it the only insect caspase reported so far functioning similar to human caspase-2 in this aspect. We believe that the discovery of SfDredd, and its different properties from SfDronc, will improve the understanding of apoptosis pathway in Sf9 cells.
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Affiliation(s)
- Zhouning Yang
- State Key Laboratory of Virology and Modern Virology Research Center, College of Life Sciences, Wuhan University, Wuhan, People’s Republic of China
| | - Ke Zhou
- State Key Laboratory of Virology and Modern Virology Research Center, College of Life Sciences, Wuhan University, Wuhan, People’s Republic of China
| | - Hao Liu
- State Key Laboratory of Virology and Modern Virology Research Center, College of Life Sciences, Wuhan University, Wuhan, People’s Republic of China
| | - Andong Wu
- State Key Laboratory of Virology and Modern Virology Research Center, College of Life Sciences, Wuhan University, Wuhan, People’s Republic of China
| | - Long Mei
- State Key Laboratory of Virology and Modern Virology Research Center, College of Life Sciences, Wuhan University, Wuhan, People’s Republic of China
| | - Qingzhen Liu
- State Key Laboratory of Virology and Modern Virology Research Center, College of Life Sciences, Wuhan University, Wuhan, People’s Republic of China
- * E-mail:
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Guan YF, Wu CY, Fang YY, Zeng YN, Luo ZY, Li SJ, Li XW, Zhu XH, Mei L, Gao TM. Neuregulin 1 protects against ischemic brain injury via ErbB4 receptors by increasing GABAergic transmission. Neuroscience 2015; 307:151-9. [DOI: 10.1016/j.neuroscience.2015.08.047] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2015] [Revised: 08/20/2015] [Accepted: 08/20/2015] [Indexed: 12/22/2022]
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Piselli P, Busnach G, Citterio F, Frigerio M, Arbustini E, Burra P, Pinna AD, Bresadola V, Ettorre GM, Baccarani U, Buda A, Lauro A, Zanus G, Cimaglia C, Spagnoletti G, Lenardon A, Agozzino M, Gambato M, Zanfi C, Miglioresi L, Di Gioia P, Mei L, Ippolito G, Serraino D. Risk of Kaposi sarcoma after solid-organ transplantation: multicenter study in 4,767 recipients in Italy, 1970-2006. Transplant Proc 2015; 41:1227-30. [PMID: 19460525 DOI: 10.1016/j.transproceed.2009.03.009] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Given the high prevalence of infection with human herpesvirus type 8, Italy is an area of utmost interest for studying Kaposi sarcoma (KS). We investigated the risk of KS in transplant recipients compared with the general population. A longitudinal study was performed from 1970 to 2006 in 4767 kidney, heart, liver, and lung transplant recipients from 7 Italian transplantation centers. The sample included 72.3% male patients with an overall patient median age of 48 years. Patient-years (PYs) at risk for KS were computed from 30 days posttransplantation to the date of KS, death, last follow-up, or study closure (December 31, 2007). Standardized incidence ratios (SIRs) and 95% confidence intervals were computed to quantify the risk of KS in transplant recipients compared with the general Italian population. Incidence rate ratios were computed to identify risk factors using adjusted Poisson regression. Based on 33,621 PYs, KS was diagnosed in 73 patients (62 men): 31 in kidney recipients, 27 in heart recipients, 8 in liver recipients, and 7 in lung recipients. The overall incidence was 217 cases per 10(5) PYs, with a significantly increased SIR of 125. SIR was particularly high in women (n = 34) and lung recipients (n = 428) but decreased significantly with time posttransplantation. The primary predictors of increased risk of KS were male sex, older age, and lung transplantation. A 5-fold reduction was observed after 18 months posttransplantation. After adjustment, patients born in southern Italy compared with northern Italy demonstrated a significant 2.2-fold increased risk. Our findings confirm that in the early posttransplantation period, Italian patients who have undergone solid-organ transplantation, particularly those from southern Italy and those who are lung recipients, are at greater risk of KS compared with the general population. These findings underscore the need for appropriate models for monitoring transplant recipients for KS, especially those at greater risk and, in particular, in the early postoperative period.
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Affiliation(s)
- P Piselli
- INMI "L. Spallanzani" IRCCS, Rome, Italy.
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Lisak RP, Zhang B, Shen C, Mei L, Drachman DB, Kaminski HJ. Neuromuscular junction as Achilles' heel: Yet another autoantibody? Neurology 2015; 84:214-5. [DOI: 10.1212/wnl.0000000000001140] [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: 11/15/2022] Open
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46
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Wan XH, Mei L, Abudureyimu Z. Whole mitochondrial genome sequence and mutations of the cervical carcinoma model inbred rat strain (Muridae; Rattus). Mitochondrial DNA A DNA Mapp Seq Anal 2014; 27:1253-4. [PMID: 25187122 DOI: 10.3109/19401736.2014.945543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
We reported the complete mitochondrial genome sequencing of an important cervical carcinoma model inbred rat strain for the first time. The total length of the mitogenome was 16,314 bp. It harbored 13 protein-coding genes, 2 ribosomal RNA genes, 22 transfer RNA genes and 1 non-coding control region. The mutation events contained in this strain were also reported.
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Affiliation(s)
- Xiao-Hui Wan
- a Department of Gynecology , The First Affiliated Hospital of Xinjiang Medical University , Xinjiang , P. R. China
| | - Long Mei
- a Department of Gynecology , The First Affiliated Hospital of Xinjiang Medical University , Xinjiang , P. R. China
| | - Zainuer Abudureyimu
- a Department of Gynecology , The First Affiliated Hospital of Xinjiang Medical University , Xinjiang , P. R. China
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Huang Y, Mei L, Gui B, Su W, Liang D, Wu L, Pan Q. A novel deletion mutation in RS1 gene caused X-linked juvenile retinoschisis in a Chinese family. Eye (Lond) 2014; 28:1364-9. [PMID: 25168411 DOI: 10.1038/eye.2014.196] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2014] [Accepted: 06/26/2014] [Indexed: 11/09/2022] Open
Abstract
PURPOSE X-linked juvenile retinoschisis (XLRS), a leading cause of juvenile macular degeneration, is characterized by a spoke-wheel pattern in the macular region of the retina and splitting of the neurosensory retina. This study aimed to identify the underlying genetic defect in a Chinese family with XLRS. METHODS The proband underwent complete ophthalmic examinations, including fundus examination, fundus autofluorescence, and optical coherence tomography. DNA extracted from proband and his younger brother was screened for mutations in RS1 gene. The detected RS1 mutation was tested in all available family members and 200 healthy controls. RESULTS Reduced visual acuity, spoke-wheel pattern at the fovea, and split retina were observed in the proband. A novel frameshift mutation c.206-207delTG in the RS1 gene, leading to a truncated protein (p.L69fs16X), was identified in the proband and his younger brother. This mutation was not found in any unaffected member or in the healthy controls. The mother of the proband was hemizygous for this mutant allele. CONCLUSIONS We identified a novel causative mutation of RS1 in a Chinese family with XLRS. This finding expands the mutation spectrum of RS1 and provides evidence for a phenotype-genotype study in XLRS.
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Affiliation(s)
- Y Huang
- State Key Laboratory of Medical Genetics, Xiangya Hospital, Central South University, Changsha, China
| | - L Mei
- State Key Laboratory of Medical Genetics, Xiangya Hospital, Central South University, Changsha, China
| | - B Gui
- State Key Laboratory of Medical Genetics, Xiangya Hospital, Central South University, Changsha, China
| | - W Su
- State Key Laboratory of Medical Genetics, Xiangya Hospital, Central South University, Changsha, China
| | - D Liang
- State Key Laboratory of Medical Genetics, Xiangya Hospital, Central South University, Changsha, China
| | - L Wu
- State Key Laboratory of Medical Genetics, Xiangya Hospital, Central South University, Changsha, China
| | - Q Pan
- State Key Laboratory of Medical Genetics, Xiangya Hospital, Central South University, Changsha, China
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Hu SS, Mei L, Chen JY, Huang ZW, Wu H. Expression of immediate-early genes in the inferior colliculus and auditory cortex in salicylate-induced tinnitus in rat. Eur J Histochem 2014; 58:2294. [PMID: 24704997 PMCID: PMC3980210 DOI: 10.4081/ejh.2014.2294] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Revised: 01/31/2014] [Accepted: 01/31/2014] [Indexed: 11/23/2022] Open
Abstract
Tinnitus could be associated with neuronal hyperactivity in the auditory center. As a neuronal activity marker, immediate-early gene (IEG) expression is considered part of a general neuronal response to natural stimuli. Some IEGs, especially the activity-dependent cytoskeletal protein (Arc) and the early growth response gene-1 (Egr-1), appear to be highly correlated with sensory-evoked neuronal activity. We hypothesize, therefore, an increase of Arc and Egr-1 will be observed in a tinnitus model. In our study, we used the gap prepulse inhibition of acoustic startle (GPIAS) paradigm to confirm that salicylate induces tinnitus-like behavior in rats. However, expression of the Arc gene and Egr-1 gene were decreased in the inferior colliculus (IC) and auditory cortex (AC), in contradiction of our hypothesis. Expression of N-methyl d-aspartate receptor subunit 2B (NR2B) was increased and all of these changes returned to normal 14 days after treatment with salicylate ceased. These data revealed long-time administration of salicylate induced tinnitus markedly but reversibly and caused neural plasticity changes in the IC and the AC. Decreased expression of Arc and Egr-1 might be involved with instability of synaptic plasticity in tinnitus.
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Zai J, Mei L, Wang C, Cao S, Fu ZF, Chen H, Song Y. N-glycosylation of the premembrane protein of Japanese encephalitis virus is critical for folding of the envelope protein and assembly of virus-like particles. Acta Virol 2014; 57:27-33. [PMID: 23530821 DOI: 10.4149/av_2013_01_27] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Premembrane (prM) and envelope (E) proteins, the major structural proteins of Japanese encephalitis virus (JEV) each contain single potential N-glycosylation site. In this study, the role of N-glycosylation of these proteins on their folding and activity were investigated. Three mutant prM and/or E (prM-E) genes lacking N-glycosylation sites were generated by site-directed mutagenesis. The effects of the N-glycan on folding, secretion and cytotoxicity of mutant proteins were determined by comparison with their wild type (wt) counterparts. Removal of N-glycan from the prM protein resulted in a complete misfolding of the E protein and failure to form virus-like particles (VLPs). A similar removal of N-glycan from the E protein led to a low efficiency of its folding and VLPs formation. The secretion and cytotoxicity of the E protein was also markedly impaired in case the glycosylation sites in the prM or E or both proteins were removed. These results suggest that the N-glycosylation of the prM protein is critical to the folding of the E protein, which makes it pivotal in the cytotoxicity of JEV particles and their production.
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Affiliation(s)
- J Zai
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, P.R. China
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Mei L, Xu LZ. Standardized clinical pathways may potentially help to reduce the opacity of medical treatment in China - reflections on the murder of a doctor in Wenling, Zhejiang. Drug Discov Ther 2013; 7:209-211. [PMID: 24270386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A doctor was murdered at Wenling First People's Hospital in Zhejiang, China on October 25, 2013. During the incident, a patient assaulted three doctors, resulting in the death of one of the doctors. This incident has led to a heated discussion about the unhealthy doctor-patient relationship in China. There are complex reasons for the strained doctor-patient relationship in China, but one aspect that helped lead to this situation is the opacity of medical treatment. Research has shown that implementation of clinical pathways reduces the variability of clinical practice and improves outcomes. Standardized clinical pathways can provide a standard for evaluation of the rationality of treatment and also suggest a recommended treatment, potentially reducing the opacity of medical treatment in China. However, the standardized clinical pathways that are currently in use in China still need to be improved. The implementation of clinical pathways needs to be increased, those pathways need to be formulated in detail, a supervisory body needs to be established, and the public needs to be better informed. These aspects should be studied further.
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Affiliation(s)
- L Mei
- Department of Health Care Management and Maternal and Child Health, Shandong University, Ji'nan, Shandong, China
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