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Zhou X, Yang Q, Bi L, Wang S. Integrating traditional apprenticeship and modern educational approaches in traditional Chinese medicine education. Med Teach 2023:1-16. [PMID: 38052086 DOI: 10.1080/0142159x.2023.2284661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
BACKGROUND The traditional apprenticeship system and modern educational models both contribute to traditional Chinese medicine (TCM) education in unique ways. This study aims to evaluate the advantages and disadvantages of these approaches and investigates their potential integration for optimal TCM teaching. METHODS The study employs a comprehensive literature search strategy with specific keywords through Boolean Operators, focusing on articles discussing TCM education, sourced from the databases PubMed, Scopus, and CNKI. For comparative analysis, the study analyzes the advantages and disadvantages of three distinct approaches-traditional, modern, and hybrid-in TCM education. Finally, we use a spider plot methodology to visually evaluate across 11 critical educational aspects for these approaches. RESULTS A comprehensive review of 70 articles on TCM education highlights the value of both conventional and modern approaches. Conventional methods often emphasize teacher-centered clinical training that aligns well with the apprenticeship model, serving to bridge formal academic learning with hands-on experience. Modern methods incorporate elements like technology and formal accreditation but caution that the absence of traditional apprenticeship could dilute core TCM principles. One recurring theme across multiple studies is the enduring importance of apprenticeship-a pedagogical cornerstone rooted in TCM's historical and cultural context-as well as its tension with modern methodologies that incorporate online resources and scientific frameworks. An integrated approach attempts to harmonize these strengths but reveals a gap in interactivity, suggesting that incorporating apprenticeship could offer a practical, hands-on method to improve student engagement. CONCLUSIONS Conventional methods in TCM education emphasize teacher-centered clinical training akin to apprenticeship, modern methods incorporate technological advances and formal accreditation; however, the absence of traditional apprenticeship could compromise core TCM principles, and an integrated model, though striving to harmonize these elements, still falls short in the area of student interactivity.
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Affiliation(s)
- Xuanxuan Zhou
- Department of Natural Medicine, School of Pharmacy, Air Force Medical University, Xi'an, China
| | - Qian Yang
- Department of Natural Medicine, School of Pharmacy, Air Force Medical University, Xi'an, China
| | - Linlin Bi
- Department of Natural Medicine, School of Pharmacy, Air Force Medical University, Xi'an, China
| | - Siwang Wang
- Department of Natural Medicine, School of Pharmacy, Air Force Medical University, Xi'an, China
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Wang J, Qiao H, Wang Z, Zhao W, Chen T, Li B, Zhu L, Chen S, Gu L, Wu Y, Zhang Z, Bi L, Chen P. Rational Design and Acoustic Assembly of Human Cerebral Cortex-Like Microtissues from hiPSC-Derived Neural Progenitors and Neurons. Adv Mater 2023; 35:e2210631. [PMID: 37170683 DOI: 10.1002/adma.202210631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 05/02/2023] [Indexed: 05/13/2023]
Abstract
Development of biologically relevant and clinically relevant human cerebral cortex models is demanded by mechanistic studies of human cerebral cortex-associated neurological diseases and discovery of preclinical neurological drug candidates. Here, rational design of human-sourced brain-like cortical tissue models is demonstrated by reverse engineering and bionic design. To implement this design, the acoustic assembly technique is employed to assemble hiPSC-derived neural progenitors and neurons separately in a label-free and contact-free manner followed by subsequent neural differentiation and culture. The generated microtissues encapsulate the neuronal microanatomy of human cerebral-cortex tissue that contains six-layered neuronal architecture, a 400-µm interlayer distance, synaptic connections between interlayers, and neuroelectrophysiological transmission. Furthermore, these microtissues are infected with herpes simplex virus type I (HSV-1) virus, and the HSV-induced pathogenesis associated with Alzheimer's disease is determined, including neuron loss and the expression of Aβ. Overall, a high-fidelity human-relevant in vitro histotypic model is provided for the cerebral cortex, which will facilitate wide applications in probing the mechanisms of neurodegenerative diseases and screening the candidates for neuroprotective agents.
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Affiliation(s)
- Jibo Wang
- Tissue Engineering and Organ Manufacturing (TEOM) Lab, Department of Biomedical Engineering, Wuhan University TaiKang Medical School (School of Basic Medical Sciences), Wuhan, 430071, China
| | - Haowen Qiao
- Tissue Engineering and Organ Manufacturing (TEOM) Lab, Department of Biomedical Engineering, Wuhan University TaiKang Medical School (School of Basic Medical Sciences), Wuhan, 430071, China
| | - Zhenyan Wang
- Tissue Engineering and Organ Manufacturing (TEOM) Lab, Department of Biomedical Engineering, Wuhan University TaiKang Medical School (School of Basic Medical Sciences), Wuhan, 430071, China
| | - Wen Zhao
- Tissue Engineering and Organ Manufacturing (TEOM) Lab, Department of Biomedical Engineering, Wuhan University TaiKang Medical School (School of Basic Medical Sciences), Wuhan, 430071, China
| | - Tao Chen
- Tissue Engineering and Organ Manufacturing (TEOM) Lab, Department of Biomedical Engineering, Wuhan University TaiKang Medical School (School of Basic Medical Sciences), Wuhan, 430071, China
| | - Bin Li
- Tissue Engineering and Organ Manufacturing (TEOM) Lab, Department of Biomedical Engineering, Wuhan University TaiKang Medical School (School of Basic Medical Sciences), Wuhan, 430071, China
| | - Lili Zhu
- Tissue Engineering and Organ Manufacturing (TEOM) Lab, Department of Biomedical Engineering, Wuhan University TaiKang Medical School (School of Basic Medical Sciences), Wuhan, 430071, China
| | - Sihan Chen
- Tissue Engineering and Organ Manufacturing (TEOM) Lab, Department of Biomedical Engineering, Wuhan University TaiKang Medical School (School of Basic Medical Sciences), Wuhan, 430071, China
| | - Longjun Gu
- Tissue Engineering and Organ Manufacturing (TEOM) Lab, Department of Biomedical Engineering, Wuhan University TaiKang Medical School (School of Basic Medical Sciences), Wuhan, 430071, China
| | - Ying Wu
- State Key Laboratory of Virology, Wuhan University, Wuhan, Hubei, 430072, China
| | - Zhentao Zhang
- Department of Neurology, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Linlin Bi
- Department of Pathology, Wuhan University TaiKang Medical School (School of Basic Medical Sciences), Wuhan, 430071, China
| | - Pu Chen
- Tissue Engineering and Organ Manufacturing (TEOM) Lab, Department of Biomedical Engineering, Wuhan University TaiKang Medical School (School of Basic Medical Sciences), Wuhan, 430071, China
- TaiKang Center for Life and Medical Sciences, Wuhan University, Wuhan, 430071, China
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He X, Yuan X, Liu Y, Qiu P, Bi L, Tang H, Lu Y. Three New Steriodal Saponins from the Rhizomes of Tupistra chinensis Baker. Chem Biodivers 2023; 20:e202201129. [PMID: 36862006 DOI: 10.1002/cbdv.202201129] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Accepted: 02/16/2023] [Indexed: 03/03/2023]
Abstract
The phytochemical constituent investigation on the 70 % ethanol extract of the rhizomes of Tupistra chinensis Baker resulted in the isolation of three new steroidal saponins which were named tuchinosides A-C (1-3). Their structures were determined by extensive spectrum analysis and chemical evidence, especially 2D NMR and HR-ESI-MS techniques. In addition, the cytotoxicity of compounds 1-3 against several human cancer cell lines was evaluated.
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Affiliation(s)
- Xuefeng He
- Health Services Planning Section, Department of Medical Service, General Hospital of Northern Theater Command, Shenyang, 110016, China
- Department of Chinese Materia Medica and Natural Medicines, School of Pharmacy, Air Force Medical University, Xi'an, 710032, China
| | - Xiaofeng Yuan
- Department of Chinese Materia Medica and Natural Medicines, School of Pharmacy, Air Force Medical University, Xi'an, 710032, China
| | - Yang Liu
- Department of Chinese Materia Medica and Natural Medicines, School of Pharmacy, Air Force Medical University, Xi'an, 710032, China
| | - Pengcheng Qiu
- Department of Chinese Materia Medica and Natural Medicines, School of Pharmacy, Air Force Medical University, Xi'an, 710032, China
| | - Linlin Bi
- Department of Chinese Materia Medica and Natural Medicines, School of Pharmacy, Air Force Medical University, Xi'an, 710032, China
| | - Haifeng Tang
- Department of Chinese Materia Medica and Natural Medicines, School of Pharmacy, Air Force Medical University, Xi'an, 710032, China
| | - Yunyang Lu
- Department of Chinese Materia Medica and Natural Medicines, School of Pharmacy, Air Force Medical University, Xi'an, 710032, China
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Zheng H, Shi Y, Bi L, Zhang Z, Zhou Z, Shao C, Cui D, Cheng X, Tang R, Pan H, Wu Z, Fu B. Dual Functions of MDP Monomer with De- and Remineralizing Ability. J Dent Res 2022; 101:1172-1180. [PMID: 35450492 DOI: 10.1177/00220345221088214] [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: 11/15/2022] Open
Abstract
Methacryloyloxydecyl dihydrogen phosphate (MDP) has been speculated to induce mineralization, but there has been no convincing evidence of its ability to induce intrafibrillar mineralization. Polymers play a critical role in biomimetic mineralization as stabilizers/inducers of amorphous precursors. Hence, MDP-induced biomimetic mineralization without polymer additives has not been fully verified or elucidated. By combining 3-dimensional stochastic optical reconstruction microscopy, surface zeta potentials, contact angle measurements, inductively coupled plasma-optical emission spectroscopy, transmission electron microscopy, atomic force microscopy, and Fourier transform infrared spectroscopy with circular dichroism, we show that amphiphilic MDP can not only demineralize dentin by releasing protons as an acidic functional monomer but also infiltrate collagen fibrils (including dentin collagen), unwind the triple helical structure by breaking hydrogen bonds, and finally immobilize within collagen. MDP-bound collagen functions as a huge collagenous phosphoprotein (HCPP), in contrast to chemical phosphorylation modifications. HCPP can induce biomimetic mineralization itself without polymer additives by alternatively attracting calcium and phosphate through electrostatic attraction. Therefore, we herein propose the dual functions of amphiphilic MDP monomer with de- and remineralizing ability. MDP in the free state can demineralize dentin substrates by releasing protons, whereas MDP in the collagen-bound state as HCPP can induce intrafibrillar mineralization. The dual functions of MDP monomer with de- and remineralization properties might create a new epoch in adhesive dentistry and preventive dentistry.
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Affiliation(s)
- H Zheng
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Dental Biomaterials and Devices for Zhejiang Provincial Engineering Research Center, Hangzhou, Zhejiang Province, China
| | - Y Shi
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Dental Biomaterials and Devices for Zhejiang Provincial Engineering Research Center, Hangzhou, Zhejiang Province, China
| | - L Bi
- The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, China
| | - Z Zhang
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Dental Biomaterials and Devices for Zhejiang Provincial Engineering Research Center, Hangzhou, Zhejiang Province, China
| | - Z Zhou
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Dental Biomaterials and Devices for Zhejiang Provincial Engineering Research Center, Hangzhou, Zhejiang Province, China
| | - C Shao
- Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, CA, USA
| | - D Cui
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University (Nanjing Tech), Nanjing, Jiangsu Province, China
| | - X Cheng
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University (Nanjing Tech), Nanjing, Jiangsu Province, China
| | - R Tang
- Center for Biomaterials and Biopathways, Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang Province, China
| | - H Pan
- Qiushi Academy for Advanced Studies, Zhejiang University, Hangzhou, Zhejiang Province, China
| | - Z Wu
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Dental Biomaterials and Devices for Zhejiang Provincial Engineering Research Center, Hangzhou, Zhejiang Province, China
| | - B Fu
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Dental Biomaterials and Devices for Zhejiang Provincial Engineering Research Center, Hangzhou, Zhejiang Province, China
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Liu Y, Rao B, Li S, Zheng N, Wang J, Bi L, Xu H. Distinct Hypothalamic Paraventricular Nucleus Inputs to the Cingulate Cortex and Paraventricular Thalamic Nucleus Modulate Anxiety and Arousal. Front Pharmacol 2022; 13:814623. [PMID: 35153786 PMCID: PMC8832877 DOI: 10.3389/fphar.2022.814623] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 11/14/2021] [Accepted: 01/06/2022] [Indexed: 12/16/2022] Open
Abstract
Insomnia and anxiety are two common clinical diseases that threaten people’s physical and mental health. Insomnia and anxiety may share some similar underlying neural circuit mechanisms in the brain. In this study, we combine techniques including chemo-fMRI, optogenetics, and chemogenetics to reveal that the glutamatergic neurons of the paraventricular hypothalamic nucleus (PVN) regulate both anxiety and arousal through two different downstream neural circuits. Optogenetic activation of the PVN-cingulate cortex (Cg) neural circuit triggers anxiety-like behaviors in mice without affecting the wakefulness, while optogenetic activation of the PVN-paraventricular thalamic nucleus (PVT) neural circuit promotes wakefulness in mice without affecting anxiety-like behaviors. Our research reveals that PVN is a key brain area for controlling anxiety and arousal behaviors. We also provide a neurological explanation for anxiety disorder and insomnia which may offer guidance for treatments including drugs or transcranial magnetic stimulation for the patients.
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Affiliation(s)
- Ying Liu
- Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Bo Rao
- Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Shuang Li
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Center for Magnetic Resonance, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, China
| | - Ning Zheng
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Center for Magnetic Resonance, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, China
| | - Jie Wang
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Center for Magnetic Resonance, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, China
- *Correspondence: Jie Wang, ; Linlin Bi, ; Haibo Xu,
| | - Linlin Bi
- Department of Pathology, School of Basic Medical Sciences, Wuhan University, Wuhan, China
- Wuhan University Center for Pathology and Molecular Diagnostics, Zhongnan Hospital of Wuhan University, Wuhan, China
- *Correspondence: Jie Wang, ; Linlin Bi, ; Haibo Xu,
| | - Haibo Xu
- Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan, China
- *Correspondence: Jie Wang, ; Linlin Bi, ; Haibo Xu,
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Du F, Xu J, Li X, Li Z, Li X, Zuo X, Bi L, Zhao D, Zhang M, Wu H, He D, Wu Z, Li Z, Li Y, Xu J, Tao Y, Zhao J, Chen J, Zhang H, Li J, Jiang L, Xiao Z, Chen Z, Yin G, Gong L, Wang G, Dong L, Xiao W, Bao C. POS0664 A MULTICENTER RANDOMIZED STUDY IN RHEUMATOID ARTHRITIS TO COMPARE IGURATIMOD, METHOTREXATE, OR COMBINATION: 52 WEEK EFFICACY AND SAFETY RESULTS OF THE SMILE TRIAL. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.1486] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Iguratimod (IGU) has demonstrated efficacy and safety for active rheumatoid arthritis (RA) patients in double-blind clinical trials in China and Japan as a new disease-modifying anti-rheumatic drug (DMARD). There are no studies evaluating the radiographic progression of structural joint damage of IGU for the treatment of RA using the mTSS as the primary endpoint.Objectives:Our study was to evaluate the efficacy and safety of IGU monotherapy and IGU combined methotrexate (MTX) compared with MTX monotherapy, including the inhibitory effects of joint destruction.Methods:This randomized, double-blind, parallel-controlled, multicenter study in patients with active RA who have not previously used MTX and biological DMARDs (bDMARDs) (ClinicalTrials.gov Identifier NCT01548001) was carried out in China. Patients were randomized 1:1:1 to receive IGU 25 mg twice a day (bid), MTX 10mg once a week(qw) for the first 4 weeks and 15 mg once a week(qw) for week 5 to 52, or IGU combined MTX (IGU+MTX) for 52 weeks. The primary endpoints were to assess and compare American College of Rheumatology 20% (ACR20) response and the change of modified total Sharp scoring (mTSS) score over 52 weeks (Intention-to-treat, ITT analysis). The non-inferiority test was used to analyze the difference of ACR20 response at 52 weeks between the IGU monotherapy and the MTX monotherapy arms, and the non-inferiority limit value was 10%. The difference test was used for the comparison between the IGU+MTX and MTX monotherapy arms. Two-way ANOVA was used to analyze the difference of the changes of mTSS score of each arm compared with baseline value (0 week).Results:A total of 895 patients were randomized to IGU 25mg bid (n =297), MTX 10-15mg qw(n=293), and IGU+MTX (n=305). Baseline characteristics were comparable between the arms (Table 1).Table 1.Demographic and Other Baseline Characteristics (SAS)IGUMTXIGU+MTXNumber of Subjects297293305Age, mean (SD) years46.87(10.67)47.63(10.70)48.37(10.69)Female/male, %77.44/22.5679.18/20.8278.03/21.97Duration of RA, mean(SD) years11.67±7.1611.60±7.9811.67±7.27CRP, mean(SD) mg/L222.32±35.4720.67±26.6119.74±31.38Tender joint count, mean (SD)14.59±9.1614.83±9.3014.93±9.88Swollen joint count, mean (SD)9.81±6.639.73±7.209.51±6.22DAS28-CRP, mean (SD)5.084±0.9945.102±0.9795.103±0.956HAQ score, mean (SD)15.82±11.2515.24±10.9316.06±10.92SAS: Safety Analysis Set; CRP: C-reactive protein;DAS28: disease activity score; HAQ: Health Assessment QuestionnaireThe study met its primary endpoints. More concretely, IGU monotherapy and IGU+MTX were found to be superior to MTX at week 52 with a higher ACR20 response of 77.44%(230/297, P=0.0019) and 77.05%(235/305, P=0.0028) versus 65.87%(193/293) (fig 1). As shown in fig 1, the structural remission (ΔmTSS≤0.5) was statistically significant for IGU monotherapy (57.4%, P=0.0308) but not for IGU+MTX arm (55%) versus MTX monotherapy (47.8%).Overall incidence of the adverse events (AEs) leading to study discontinuation were reported in 13.8% (41/297) in IGU monotherapy arm, 11.26% (33/293) in MTX monotherapy arm and 11.51% (35/305) patients in IGU+MTX arm. The incidence of adverse drug reactions (ADR) leading to study discontinuation were 11.45% (34/297), 8.53% (25/293) and 9.21% (28/305), respectively. There was no one death and no significant difference in all the safety indicators among the three arms.Conclusion:Iguratimod alone or in combination with MTX demonstrated superior efficacy with acceptable safety compared to MTX for patients with active RA who have not previously used MTX bDMARDs.Disclosure of Interests:None declared
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Huang Z, Zhong Z, Sha Q, Xu Y, Zhang Z, Wu L, Wang Y, Zhang L, Cui X, Tang M, Shi B, Zheng C, Li Z, Hu M, Bi L, Zheng J, Yan M. An updated model-ready emission inventory for Guangdong Province by incorporating big data and mapping onto multiple chemical mechanisms. Sci Total Environ 2021; 769:144535. [PMID: 33486173 DOI: 10.1016/j.scitotenv.2020.144535] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 12/11/2020] [Accepted: 12/12/2020] [Indexed: 06/12/2023]
Abstract
An accurate characterization of spatial-temporal emission patterns and speciation of volatile organic compounds (VOCs) for multiple chemical mechanisms is important to improving the air quality ensemble modeling. In this study, we developed a 2017-based high-resolution (3 km × 3 km) model-ready emission inventory for Guangdong Province (GD) by updating estimation methods, emission factors, activity data, and allocation profiles. In particular, a full-localized speciation profile dataset mapped to five chemical mechanisms was developed to promote the determination of VOC speciation, and two dynamic approaches based on big data were used to improve the estimation of ship emissions and open fire biomass burning (OFBB). Compared with previous emissions, more VOC emissions were classified as oxygenated volatile organic compound (OVOC) species, and their contributions to the total ozone formation potential (OFP) in the Pearl River Delta (PRD) region increased by 17%. Formaldehyde became the largest OFP species in GD, accounting for 11.6% of the total OFP, indicating that the model-ready emission inventory developed in this study is more reactive. The high spatial-temporal variability of ship sources and OFBB, which were previously underestimated, was also captured by using big data. Ship emissions during typhoon days and holidays decreased by 23-55%. 95% of OFBB emissions were concentrated in 9% of the GD area and 31% of the days in 2017, demonstrating their strong spatial-temporal variability. In addition, this study revealed that GD emissions have changed rapidly in recent years due to the leap-forward control measures implemented, and thus, they needed to be updated regularly. All of these updates led to a 5-17% decrease in the emission uncertainty for most pollutants. The results of this study provide a reference for how to reduce uncertainties in developing model-ready emission inventories.
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Affiliation(s)
- Zhijiong Huang
- Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China
| | - Zhuangmin Zhong
- Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China
| | - Qinge Sha
- Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China
| | - Yuanqian Xu
- Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China
| | - Zhiwei Zhang
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Lili Wu
- Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China
| | - Yuzheng Wang
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Lihang Zhang
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Xiaozhen Cui
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - MingShuang Tang
- Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China
| | - Bowen Shi
- Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China
| | - Chuanzeng Zheng
- Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China
| | - Zhen Li
- Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China
| | - Mingming Hu
- Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China
| | - Linlin Bi
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Junyu Zheng
- Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China.
| | - Min Yan
- Shenzhen Academy of Environmental Sciences, Shenzhen 518001, China.
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Bi L, Liu Y, Yang Q, Zhou X, Li H, Liu Y, Li J, Lu Y, Tang H. Paris saponin H inhibits the proliferation of glioma cells through the A1 and A3 adenosine receptor‑mediated pathway. Int J Mol Med 2021; 47:30. [PMID: 33537802 PMCID: PMC7891836 DOI: 10.3892/ijmm.2021.4863] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Accepted: 11/30/2020] [Indexed: 12/18/2022] Open
Abstract
Paris saponin H (PSH) is a type of steroid saponin derived from Rhizoma Paridis (RP; the rhizome of Paris). In our previous studies, saponins from RP exerted antiglioma activity in vitro. However, the effects of PSH on glioma have not been elucidated. The aim of the present study was to evaluate the effects of PSH on U251 glioblastoma cells and elucidate the possible underlying mechanism. The cells were treated with PSH at various concentrations for 48 h, and the cell viability, invasion, apoptosis and cycle progression were assessed using specific assay kits. The activation of Akt, 44/42‑mitogen‑activated protein kinase (MAPK) and the expression levels of A1 adenosine receptor (ARA1) and ARA3 were assessed by western blotting. The results demonstrated that PSH inhibited cell viability, migration and invasion, and induced apoptosis. Treatment of U251 cells with PSH induced the upregulation of p21 and p27, and the downregulation cyclin D1 and S‑phase kinase associated protein 2 protein expression levels, which induced cell cycle arrest at the G1 phase. The results also demonstrated that PSH inhibited the expression of ARA1, and the agonist of ARA1, 2‑chloro‑N6‑cyclopentyladenosine, reversed the effects of PSH. Hypoxia induced increases in the ARA3, hypoxia‑inducible factor‑1α (HIF‑1α) and vascular endothelial growth factor (VEGF) protein expression levels, which were associated with the activation of the Akt and P44/42 MAPK pathways. Compared with the hypoxia group, PSH inhibited the expression levels of ARA3, HIF‑1α and VEGF, as well as the phosphorylation levels of Akt and 44/42 MAPK, and repressed HIF‑1α transcriptional activity. Furthermore, the results demonstrated that PSH inhibited the expression of HIF‑1α by inhibiting the phosphorylation of Akt and 44/42 MAPK mediated by ARA3. Taken together, these results suggested that PSH reduced U251 cell viability via the inhibition of ARA1 and ARA3 expression, and further inhibited Akt and 44/42 MAPK phosphorylation, induced apoptosis and cell cycle arrest.
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Affiliation(s)
- Linlin Bi
- Department of Chinese Materia Medica and Natural Medicines, Air Force Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Yang Liu
- Department of Chinese Materia Medica and Natural Medicines, Air Force Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Qian Yang
- Department of Chinese Materia Medica and Natural Medicines, Air Force Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Xuanxuan Zhou
- Department of Chinese Materia Medica and Natural Medicines, Air Force Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Hua Li
- Department of Chinese Materia Medica and Natural Medicines, Air Force Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Yang Liu
- Department of Chinese Materia Medica and Natural Medicines, Air Force Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Jie Li
- Department of Chinese Materia Medica and Natural Medicines, Air Force Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Yunyang Lu
- Department of Chinese Materia Medica and Natural Medicines, Air Force Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Haifeng Tang
- Department of Chinese Materia Medica and Natural Medicines, Air Force Medical University, Xi'an, Shaanxi 710032, P.R. China
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Abstract
OBJECTIVE To explore the effect of dexmedetomidine (DEX) on sepsis-induced liver injury in rats and the mechanism of action, providing certain references for the prevention and treatment of sepsis-induced liver injury in clinical practice. MATERIALS AND METHODS A total of 60 male Sprague Dawley (SD) rats were randomly divided into 3 groups, namely sham operation group (Sham group, n=20), sepsis-induced liver injury group [lipopolysaccharides (LPS) group, n=20], and sepsis-induced liver injury + DEX group (LPS + DEX group, n=20) using a random number table. Rat models of sepsis-induced liver injury were established by intraperitoneal injection of LPS (10 mg/kg), and at the same time, DEX was intragastrically injected at a dose of 50 μg/kg. After 24 h, the survival analysis curves of each group of rats were plotted. Meanwhile, the levels of liver function indexes and oxidative stress markers were measured at 12 h in each group of rats. Hematoxylin-eosin (H&E) staining assay was carried out to detect the morphological changes of rat liver cells in each group. Terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate-biotin nick end-labeling (TUNEL) staining assay was performed to detect the apoptosis level in rat liver tissues in each group. In addition, the expression level of Caspase 3 in three groups of rats was measured through immunohistochemical staining assay. Lastly, the effect of DEX on the protein expression of extracellular signal-regulated kinases 1/2 (ERK1/2) in liver tissues was detected via Western blotting. RESULTS DEX significantly improved liver dysfunction induced by LPS and raised the 24 h-survival rates of rats (p<0.05). Besides, H&E staining results showed that DEX clearly relieved the pathological damage of rat liver cells caused by LPS. In comparison with LPS group, LPS + DEX group displayed more neatly arranged liver cells, less degradation and necrosis, and evidently attenuated cellular edema. Immunohistochemistry results revealed that DEX significantly reversed the increase in Caspase 3 expression resulting from LPS. The results of the TUNEL staining assay showed that DEX clearly inhibited the apoptosis of rat liver cells induced by LPS. The results of Western blotting revealed that DEX notably reversed the decrease of phosphorylated ERK1/2 (p-ERK1/2) in rat liver tissues compared with LPS group. CONCLUSIONS DEX is able to markedly relieve LPS-induced liver injury in rats and the underlying mechanism may be related to the activation of the ERK1/2 signaling pathway.
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Affiliation(s)
- X-K Li
- Department of Anesthesiology, Affiliated Jining No. 1 People's Hospital of Jining Medical University, Jining Medical University, Jining, China.
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10
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Liu Y, Li Y, Yang B, Yu M, Zhang X, Bi L, Xu H. Glutamatergic Neurons of the Paraventricular Nucleus are Critical for the Control of Wakefulness. Neuroscience 2020; 446:137-144. [PMID: 32860935 DOI: 10.1016/j.neuroscience.2020.08.024] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 08/10/2020] [Accepted: 08/18/2020] [Indexed: 02/09/2023]
Abstract
Normal sleep-wake behavior is extremely important for humans to maintain basic physiological and cognitive activities. However, the neural mechanisms underlying sleep-wake regulation are not fully understood. The paraventricular nucleus (PVN) of the hypothalamus has been classically defined as a region for the regulation of the hypothalamoneurohypophysial system and autonomic nervous system. Here, we identify the glutamatergic neurons in the PVN that play a unique role in sleep-wake regulation. Firstly using in vivo fiber photometry, we found altered calcium activities of PVN glutamatergic neurons during three sleep state transitions in freely behaving mice. The calcium activities of PVN glutamatergic neurons began to increase before non-rapid-eye movement (NREM) sleep to wake transitions and NREM sleep to rapid-eye-movement (REM) sleep transitions and began to decrease before wake to NREM sleep transitions. Then we used chemogenetic manipulations together with polysomnographic recordings, activation of PVN neurons increased wakefulness and decreased NREM sleep, while inhibition of PVN neurons caused a reduction in wakefulness and an increase in NREM sleep. Altogether, our findings revealed an important role for PVN glutamatergic neurons in the regulation of wake state.
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Affiliation(s)
- Ying Liu
- Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, Hubei Province, China
| | - Ying Li
- Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, Hubei Province, China
| | - Bo Yang
- Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, Hubei Province, China
| | - Minhua Yu
- Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, Hubei Province, China
| | - Xuefen Zhang
- Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, Hubei Province, China
| | - Linlin Bi
- Wuhan University, Center for Pathology and Molecular Diagnostics, Zhongnan Hospital of Wuhan University, Wuhan 430071, China; Department of Pathology, School of Basic Medical Sciences, Wuhan University, Wuhan 430071, China.
| | - Haibo Xu
- Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, Hubei Province, China.
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11
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Keyes PC, Adams EL, Chen Z, Bi L, Nachtrab G, Wang VJ, Tessier-Lavigne M, Zhu Y, Chen X. Orchestrating Opiate-Associated Memories in Thalamic Circuits. Neuron 2020; 107:1113-1123.e4. [PMID: 32679036 DOI: 10.1016/j.neuron.2020.06.028] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [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: 06/03/2019] [Revised: 05/28/2020] [Accepted: 06/23/2020] [Indexed: 02/06/2023]
Abstract
Disrupting memories that associate environmental cues with drug experiences holds promise for treating addiction, yet accessing the distributed neural network that stores such memories is challenging. Here, we show that the paraventricular nucleus of the thalamus (PVT) orchestrates the acquisition and maintenance of opiate-associated memories via projections to the central nucleus of the amygdala (CeA) and nucleus accumbens (NAc). PVT→CeA activity associates morphine reward to the environment, whereas transient inhibition of the PVT→NAc pathway during retrieval causes enduring protection against opiate-primed relapse. Using brain-wide activity mapping, we revealed distributed network activities that are altered in non-relapsing mice, which enabled us to find that activating the downstream NAc→lateral hypothalamus (LH) pathway also prevents relapse. These findings establish the PVT as a key node in the opiate-associated memory network and demonstrate the potential of targeting the PVT→NAc→LH pathway for treating opioid addiction.
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Affiliation(s)
- Piper C Keyes
- Neurosciences Graduate Program, Stanford University, Stanford, CA 94305, USA
| | - Eliza L Adams
- Neurosciences Graduate Program, Stanford University, Stanford, CA 94305, USA
| | - Zijun Chen
- Shenzhen Key Laboratory of Drug Addiction, CAS Key Laboratory of Brain Connectome and Manipulation, the Brain Cognition and Brain Disease Institute (BCBDI), Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences; Shenzhen-Hong Kong Institute of Brain Science-Shenzhen Fundamental Research Institutions, Shenzhen 518055, China
| | - Linlin Bi
- Department of Biology, Stanford University, Stanford, CA 94305, USA
| | - Gregory Nachtrab
- Department of Biology, Stanford University, Stanford, CA 94305, USA
| | - Vickie J Wang
- Department of Biology, Stanford University, Stanford, CA 94305, USA
| | | | - Yingjie Zhu
- Shenzhen Key Laboratory of Drug Addiction, CAS Key Laboratory of Brain Connectome and Manipulation, the Brain Cognition and Brain Disease Institute (BCBDI), Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences; Shenzhen-Hong Kong Institute of Brain Science-Shenzhen Fundamental Research Institutions, Shenzhen 518055, China; Department of Biology, Stanford University, Stanford, CA 94305, USA.
| | - Xiaoke Chen
- Neurosciences Graduate Program, Stanford University, Stanford, CA 94305, USA; Department of Biology, Stanford University, Stanford, CA 94305, USA.
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12
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Zheng B, Zhang X, Wang X, Ge L, Wei M, Bi L, Deng X, Wang Q, Li J, Wang Z. A comparison of open, laparoscopic and robotic total mesorectal excision: trial sequential analysis and network meta-analysis. Colorectal Dis 2020; 22:382-391. [PMID: 31600858 DOI: 10.1111/codi.14872] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2019] [Accepted: 09/06/2019] [Indexed: 02/06/2023]
Abstract
AIM Total mesorectal excision (TME) for rectal cancer can be achieved by employing open (OpTME), laparoscopic (LaTME) and robotic (RoTME) approaches but which of these has the best outcome? The aim of present study is to identify the most effective technique for rectal cancer by comparing all outcomes. METHODS Randomized controlled trials (RCTs) which compared at least two TME strategies were identified by literature search of electronic databases of articles published to June 2018. Network meta-analysis with trial sequential analysis was performed using a frequentist approach with random-effects meta-analysis. Data collection and analysis We conducted a systematic search of PubMed, EmBase, the Cochrane Library, CNKI, and Web of Science. Titles and abstracts of the retrieved publications were independently and blindly assessed by two authors. RESULTS Twenty-two RCTs with 4882 rectal cancer patients were included in this analysis. The trial sequential analysis demonstrated that the cumulative Z-curve crossed either the traditional boundary or the trial sequential monitoring boundaries, suggesting that OpTME resulted in a more complete TME specimen than LaTME (relative risk 1.05, 95% confidence interval 1.01-1.08). Network meta-analysis showed there was no significant difference in the other comparisons. Based on the P score of completeness of the TME specimen and circumferential resection margin positivity, the best technique was OpTME, followed by RoTME and then LaTME. However, this order was reversed when complications and mortality were considered. RoTME led to better lymph node harvest. CONCLUSIONS Although OpTME may give better pathological specimens, minimally invasive techniques may have advantages when considering lymph node harvest, complications and mortality. More RCTs are needed to determine which technique actually gives the best chance of survival.
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Affiliation(s)
- B Zheng
- Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - X Zhang
- Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - X Wang
- Department of Gastroenterology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - L Ge
- Evidence-Based Medicine Center, Lanzhou University, Lanzhou, China
| | - M Wei
- Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - L Bi
- Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - X Deng
- Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Q Wang
- Digestive Disease Hospital, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - J Li
- National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Z Wang
- Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu, China
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Zhao F, Bi L, Chen MC, Wu YL, Sun YH. The prevalence and influencing factors for child neglect in a rural area of Anhui province: a 2-year follow-up study. Public Health 2018; 155:110-118. [DOI: 10.1016/j.puhe.2017.11.024] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Revised: 08/28/2017] [Accepted: 11/26/2017] [Indexed: 11/25/2022]
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Yuan J, Zhou X, Cao W, Bi L, Zhang Y, Yang Q, Wang S. Improved Antitumor Efficacy and Pharmacokinetics of Bufalin via PEGylated Liposomes. Nanoscale Res Lett 2017; 12:585. [PMID: 29124481 PMCID: PMC5680394 DOI: 10.1186/s11671-017-2346-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Accepted: 10/20/2017] [Indexed: 05/24/2023]
Abstract
Bufalin was reported to show strong pharmacological effects including cardiotonic, antiviral, immune-regulation, and especially antitumor effects. The objective of this study was to determine the characterization, antitumor efficacy, and pharmacokinetics of bufalin-loaded PEGylated liposomes compared with bufalin entity, which were prepared by FDA-approved pharmaceutical excipients. Bufalin-loaded PEGylated liposomes and bufalin-loaded liposomes were prepared reproducibly with homogeneous particle size by the combination of thin film evaporation method and high-pressure homogenization method. Their mean particle sizes were 127.6 and 155.0 nm, mean zeta potentials were 2.24 and - 18.5 mV, and entrapment efficiencies were 76.31 and 78.40%, respectively. In vitro release profile revealed that the release of bufalin in bufalin-loaded PEGylated liposomes was slower than that in bufalin-loaded liposomes. The cytotoxicity of blank liposomes has been found within acceptable range, whereas bufalin-loaded PEGylated liposomes showed enhanced cytotoxicity to U251 cells compared with bufalin entity. In vivo pharmacokinetics indicated that bufalin-loaded PEGylated liposomes could extend or eliminate the half-life time of bufalin in plasma in rats. The results suggested that bufalin-loaded PEGylated liposomes improved the solubility and increased the drug concentration in plasma.
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Affiliation(s)
- Jiani Yuan
- Department of Natural Medicine & Institute of Materia Medica, School of Pharmacy, The Fourth Military Medical University, Xi'an, China
| | - Xuanxuan Zhou
- Department of Natural Medicine & Institute of Materia Medica, School of Pharmacy, The Fourth Military Medical University, Xi'an, China
| | - Wei Cao
- Department of Natural Medicine & Institute of Materia Medica, School of Pharmacy, The Fourth Military Medical University, Xi'an, China
| | - Linlin Bi
- Department of Natural Medicine & Institute of Materia Medica, School of Pharmacy, The Fourth Military Medical University, Xi'an, China
| | - Yifang Zhang
- Shaanxi Pharmaceutical Development Center, Xi'an, China
| | - Qian Yang
- Department of Natural Medicine & Institute of Materia Medica, School of Pharmacy, The Fourth Military Medical University, Xi'an, China.
| | - Siwang Wang
- Department of Natural Medicine & Institute of Materia Medica, School of Pharmacy, The Fourth Military Medical University, Xi'an, China.
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15
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Wang G, Bi L, Li X, Li Z, Zhao D, Chen J, He D, Wang CN, Dueñas H, Skljarevski V, Yue L. Efficacy and safety of duloxetine in Chinese patients with chronic pain due to osteoarthritis: a randomized, double-blind, placebo-controlled study. Osteoarthritis Cartilage 2017; 25:832-838. [PMID: 28043937 DOI: 10.1016/j.joca.2016.12.025] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Revised: 12/15/2016] [Accepted: 12/20/2016] [Indexed: 02/02/2023]
Abstract
OBJECTIVE We assessed the efficacy and safety of duloxetine (60 mg, once daily), compared with placebo, during a 13-week treatment period in Chinese patients with chronic pain due to osteoarthritis (OA). DESIGN Patients were at least 40 years old (male or female) who met American College of Rheumatology clinical and radiographic criteria for the diagnosis of OA of the knee or hip. The primary efficacy measure in this phase 3, randomized, double-blind, placebo-controlled clinical trial was assessment of pain severity by the Brief Pain Inventory (BPI) 24-h Average Pain rating. The clinical trial was conducted at 17 study centers. Statistical approaches included mixed-effects model repeated measures and analysis of covariance. A Fisher exact test was applied to categorical variables. RESULTS Of 407 patients randomized (duloxetine: N = 205; placebo: N = 202), 166 (81.0%) patients from the duloxetine group and 176 (87.1%) patients from the placebo group completed the 13-week treatment phase. The majority (76.4%) of patients was female; mean age was 60.5 years. Duloxetine-treated patients reported significant pain reduction, compared with placebo treatment, on the BPI 24-h Average Pain rating (least-squares mean (LS Mean) change from baseline to endpoint [95% confidence interval (CI)], duloxetine: -2.23; placebo: -1.73; difference = -0.50 [-0.80, -0.20]; P = 0.001). The incidence of discontinuations due to adverse events was 9.0% in duloxetine-treated patients and 4.5% in placebo-treated patients (P = 0.109). CONCLUSIONS This study demonstrated the efficacy of duloxetine in Chinese patients with chronic pain due to OA. The safety profile of duloxetine observed in this study was consistent with that in previous duloxetine trials. This trial is registered with ClinicalTrials.gov (NCT01931475).
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Affiliation(s)
- G Wang
- Rheumatology Department, China-Japan Friendship Hospital, Beijing, PR China.
| | - L Bi
- Rheumatology Department, China-Japan Union Hospital of Jilin University, Changchun, PR China.
| | - X Li
- Rheumatology Department, Anhui Provincial Hospital, Hefei, PR China.
| | - Z Li
- Rheumatology Department, Affiliated Hospital of Bengbu Medical College, Bengbu, PR China.
| | - D Zhao
- Rheumatology Department, Shanghai Changhai Hospital, The 2nd Military Medical University, Shanghai, PR China.
| | - J Chen
- Rheumatology Department, The Second Xiangya Hospital of Central South University, Changsha, PR China.
| | - D He
- Rheumatology Department, Shanghai Guanghua Hospital, Shanghai, PR China.
| | - C-N Wang
- Asian-Pacific Statistical Sciences, Lilly Suzhou Pharmaceutical Co. Ltd., Shanghai Branch, Shanghai, PR China.
| | - H Dueñas
- EMBU Regional Medical Affairs, Eli Lilly de Mexico, Mexico City, Mexico.
| | - V Skljarevski
- Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, USA.
| | - L Yue
- Medical Department, Lilly Suzhou Pharmaceutical Co. Ltd., Shanghai Branch, Shanghai, PR China.
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Zhao H, Zhang M, Zhou F, Cao W, Bi L, Xie Y, Yang Q, Wang S. Cinnamaldehyde ameliorates LPS-induced cardiac dysfunction via TLR4-NOX4 pathway: The regulation of autophagy and ROS production. J Mol Cell Cardiol 2016; 101:11-24. [PMID: 27838370 DOI: 10.1016/j.yjmcc.2016.10.017] [Citation(s) in RCA: 87] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Revised: 10/24/2016] [Accepted: 10/25/2016] [Indexed: 12/22/2022]
Abstract
Cinnamaldehyde (CA), a major bioactive compound extracted from the essential oil of Cortex Cinnamomi, exhibits anti-inflammatory activity on endotoxemia. Accumulating evidence indicates reactive oxygen species (ROS) and autophagy play a vital role in the cardiac dysfunction during endotoxemia. The aim of this study was to unveil the mechanism of CA on ROS production and autophagy during endotoxemia. Male Sprague-Dawley rats were stimulated by LPS (20mg/kg i.v.) with or without treatment of CA. Cardiac function and histopathological staining were preformed 4h after LPS stimulation. The levels of TNF-α, IL-1β and IL-6 were detected by ELISA. The expression of p-JNK, p-ERK, p-p38, TLR4, NOX4, NOX2, ATG5 and LC3 proteins were determined by Western blot. The results showed that CA inhibited cardiac dysfunction, inflammatory infiltration and the levels of TNF-α, IL-1β and IL-6 in LPS stimulated rats by blocking the TLR4, NOX4, MAPK and autophagy signalings. In order to obtain further confirmation of the mechanism of CA on endotoxemia in vitro, a limited time-course study was firstly performed by Western blot. TLR4, NOX4 and LC3 were significantly increased after 4h LPS stimulation. CA reversed the intracellular ROS production and MAPK signaling activation induced by LPS. Electron microscopy, mRFP-GFP-LC3 transfection and western blot results revealed autophagic flux were attenuated after CA treatment. The siRNA and molecular docking results suggest that CA can suppress both TLR4 and NOX4 during endotoxemia. Our data revealed that CA ameliorated LPS-induced cardiac dysfunction by inhibiting ROS production and autophagy through TLR4-NOX4 pathway.
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Affiliation(s)
- Hang Zhao
- Institute of Materia Medica, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China; The Cultivation Project of Collaborative Innovation Center for Chinese Medicine in QinBa Mountains, Xi'an 710032, China
| | - Meng Zhang
- Institute of Materia Medica, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China; The Cultivation Project of Collaborative Innovation Center for Chinese Medicine in QinBa Mountains, Xi'an 710032, China
| | - Fuxing Zhou
- Department of Obstetrics and Gynecology, Xijing Hospital, The First Affiliated Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Wei Cao
- Institute of Materia Medica, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China; The Cultivation Project of Collaborative Innovation Center for Chinese Medicine in QinBa Mountains, Xi'an 710032, China
| | - Linlin Bi
- Institute of Materia Medica, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China; The Cultivation Project of Collaborative Innovation Center for Chinese Medicine in QinBa Mountains, Xi'an 710032, China
| | - Yanhua Xie
- Institute of Materia Medica, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China; The Cultivation Project of Collaborative Innovation Center for Chinese Medicine in QinBa Mountains, Xi'an 710032, China
| | - Qian Yang
- Institute of Materia Medica, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China; The Cultivation Project of Collaborative Innovation Center for Chinese Medicine in QinBa Mountains, Xi'an 710032, China.
| | - Siwang Wang
- Institute of Materia Medica, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China; The Cultivation Project of Collaborative Innovation Center for Chinese Medicine in QinBa Mountains, Xi'an 710032, China.
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Bi L, Yang Q, Yuan J, Miao Q, Duan L, Li F, Wang S. MicroRNA-127-3p acts as a tumor suppressor in epithelial ovarian cancer by regulating the BAG5 gene. Oncol Rep 2016; 36:2563-2570. [PMID: 27571744 DOI: 10.3892/or.2016.5055] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Accepted: 03/15/2016] [Indexed: 11/05/2022] Open
Abstract
In the present study, the tumor-suppressive role of microRNA-127-3p (miR-127-3p) in epithelial ovarian cancer (EOC) was elucidated. Expression of miR-127-3p was examined by quantitative RT-PCR (qRT-PCR) in 9 EOC cell lines and clinical samples from 13 EOC patients. EOC cell lines, OVCAR-3 and Caov-3, were transduced with a lentivirus to overexpress endogenous miR-127-3p. The tumor-suppressive effects of miR-127-3p on EOC proliferation, bufalin sensitivity, invasion and in vivo growth were investigated through proliferation, bufalin sensitivity wound-closure and in vivo tumorigenicity assays, respectively. In addition, luciferase reporter assay and qRT-PCR were conducted to verify whether the Bcl-2-associated athanogene 5 (BAG5) gene was the downstream target of miR-127-3p in EOC. BAG5 was subsequently upregulated in the OVCAR-3 and Caov-3 cells to examine its functional correlation with miR‑127-3p regulation in EOC. The results revealed that in both EOC cell lines and EOC tumor tissues, miR-127-3p was downregulated. Lentiviral-mediated miR-127-3p overexpression exerted tumor-suppressive effects in OVCAR-3 and Caov-3 cells by reducing in vitro proliferation and invasion, increasing bufalin sensitivity, and inhibiting in vivo tumor growth. miR‑127-3p directly regulated the BAG5 gene in EOC. Subsequent BAG5 upregulation ameliorated the tumor-suppressive effects of miR-127-3p overexpression in EOC. In conclusion, miR-127-3p functions as a tumor suppressor in EOC, and its influence on EOC is directly through regulation of BAG5.
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Affiliation(s)
- Linlin Bi
- Department of Natural Medicine, School of Pharmacy, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Qian Yang
- Department of Natural Medicine, School of Pharmacy, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Jiani Yuan
- Department of Natural Medicine, School of Pharmacy, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Qing Miao
- Department of Pharmacy, PLA 401 Hospital, Qingdao, Shandong 266071, P.R. China
| | - Linrui Duan
- Department of Natural Medicine, School of Pharmacy, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Feng Li
- Department of Traditional Chinese Medicine, Xijing Hospital of The Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Siwang Wang
- Department of Natural Medicine, School of Pharmacy, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
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Bi J, Koivisto L, Owen G, Huang P, Wang Z, Shen Y, Bi L, Rokka A, Haapasalo M, Heino J, Häkkinen L, Larjava H. Epithelial Microvesicles Promote an Inflammatory Phenotype in Fibroblasts. J Dent Res 2016; 95:680-8. [DOI: 10.1177/0022034516633172] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Microvesicles (MVs) are extracellular vesicles secreted by various cell types that are involved in intercellular communication. We hypothesized that in human periodontal disease, the pocket epithelium releases MVs, which then modulate gene expression in the underlying fibroblasts to control periodontal inflammation. MVs were isolated from culture medium of gingival epithelial cells (GECs) treated with oral bacterial biofilm extract or left untreated. Biofilm treatment significantly increased MV release from the GECs. Mass spectrometry of GEC-MVs identified a total of 2,173 proteins, of which about 80% were detected in MVs from both control and biofilm-treated GECs. Among 80 signature genes of human gingival fibroblasts, 20 were significantly regulated ( P < 0.05) by MVs from control and biofilm-treated GECs in a similar manner. Matrix metalloproteinase 1 and 3 and interleukin 6 and 8 showed the strongest regulation at the mRNA and protein levels. Several cellular signaling pathways were activated by GEC-MVs in human gingival fibroblasts, including Smad and mitogen-activated protein kinase–associated pathways ERK1/2, JNK, and p38. However, ERK1/2 signaling dominated in the MV-induced gene expression changes. The results demonstrate that GEC-MVs have a strong regulatory effect on the expression of fibroblast genes associated with inflammation and matrix degradation and that bacterial biofilm stimulates the generation of GEC-MVs. This suggests that bacterial biofilms can contribute to the initiation and progression of periodontal disease by promoting a tissue-destructive phenotype in gingival fibroblasts via the enhanced secretion of epithelial MVs.
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Affiliation(s)
- J. Bi
- Faculty of Dentistry, Department of Oral Biological and Medical Sciences, The University of British Columbia, Vancouver, Canada
- Department of Stomatology, The Fourth Affiliated Hospital, Harbin Medical University, Harbin, China
| | - L. Koivisto
- Faculty of Dentistry, Department of Oral Biological and Medical Sciences, The University of British Columbia, Vancouver, Canada
| | - G. Owen
- Faculty of Dentistry, Department of Oral Biological and Medical Sciences, The University of British Columbia, Vancouver, Canada
| | - P. Huang
- Faculty of Dentistry, Department of Oral Biological and Medical Sciences, The University of British Columbia, Vancouver, Canada
- Department of Stomatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Z. Wang
- Faculty of Dentistry, Department of Oral Biological and Medical Sciences, The University of British Columbia, Vancouver, Canada
| | - Y. Shen
- Faculty of Dentistry, Department of Oral Biological and Medical Sciences, The University of British Columbia, Vancouver, Canada
| | - L. Bi
- Department of Stomatology, The Fourth Affiliated Hospital, Harbin Medical University, Harbin, China
| | - A. Rokka
- Turku Centre for Biotechnology, University of Turku and Åbo Akademi University, Turku, Finland
| | - M. Haapasalo
- Faculty of Dentistry, Department of Oral Biological and Medical Sciences, The University of British Columbia, Vancouver, Canada
| | - J. Heino
- Department of Biochemistry, University of Turku, Turku, Finland
| | - L. Häkkinen
- Faculty of Dentistry, Department of Oral Biological and Medical Sciences, The University of British Columbia, Vancouver, Canada
| | - H.S. Larjava
- Faculty of Dentistry, Department of Oral Biological and Medical Sciences, The University of British Columbia, Vancouver, Canada
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Zhao F, Bi L, Wang W, Wu X, Li Y, Gong F, Lu S, Feng F, Qian Z, Hu C, Wu Y, Sun Y. Mutations of glucocerebrosidase gene and susceptibility to Parkinson's disease: An updated meta-analysis in a European population. Neuroscience 2016; 320:239-46. [PMID: 26868973 DOI: 10.1016/j.neuroscience.2016.02.007] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Revised: 01/30/2016] [Accepted: 02/02/2016] [Indexed: 11/24/2022]
Abstract
This meta-analysis aims to investigate the association between mutations of glucocerebrosidase (GBA) gene and susceptibility to Parkinson's disease (PD) in a European population. Several electronic databases were extensively searched. Odds ratios (ORs) and 95% confidence intervals (CIs) were calculated to assess the association. In total, fourteen published papers screening L444P, N370S and other GBA variants were identified. The GBA mutations were significantly associated with PD in the European population. Subgroup analysis stratified by the age of onset (AAO) revealed that the association between GBA mutations and PD existed in the patients with age at onset ⩽50 years but did not exist in the patients with age at onset >50 years. Furthermore, the associations between N370S, and L444P with PD were also analyzed to explore the roles of the two most frequent GBA mutations in the development of PD. The results showed that significant associations between N370S, and L444P with PD were observed, respectively. Overall, the study supported that GBA mutations were a risk factor for PD in the European population. Patients with early-onset were more likely to carry GBA mutations than those with late-onset. Moreover, both L444P and N370S were associated with increased PD risk.
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Affiliation(s)
- F Zhao
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, No. 81 Meishan Road, Hefei 230032, Anhui, China
| | - L Bi
- School of Medicine, The University of Adelaide, Adelaide, SA 5005, Australia
| | - W Wang
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, No. 81 Meishan Road, Hefei 230032, Anhui, China
| | - X Wu
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, No. 81 Meishan Road, Hefei 230032, Anhui, China
| | - Y Li
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, No. 81 Meishan Road, Hefei 230032, Anhui, China
| | - F Gong
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, No. 81 Meishan Road, Hefei 230032, Anhui, China
| | - S Lu
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, No. 81 Meishan Road, Hefei 230032, Anhui, China
| | - F Feng
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, No. 81 Meishan Road, Hefei 230032, Anhui, China
| | - Z Qian
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, No. 81 Meishan Road, Hefei 230032, Anhui, China
| | - C Hu
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, No. 81 Meishan Road, Hefei 230032, Anhui, China
| | - Y Wu
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, No. 81 Meishan Road, Hefei 230032, Anhui, China
| | - Y Sun
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, No. 81 Meishan Road, Hefei 230032, Anhui, China; Centre for Evidence-Based Practice, Anhui Medical University, No. 81 Meishan Road, Hefei 230032, Anhui, China.
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20
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Zhao J, Bai W, Zhu P, Zhang X, Liu S, Wu L, Ma L, Bi L, Zuo X, Sun L, Huang C, Tian X, Li M, Zhao Y, Zeng X. Chinese SLE Treatment and Research group (CSTAR) registry VII: prevalence and clinical significance of serositis in Chinese patients with systemic lupus erythematosus. Lupus 2016; 25:652-7. [PMID: 26762471 DOI: 10.1177/0961203315625460] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Accepted: 12/07/2015] [Indexed: 11/16/2022]
Abstract
Objectives To investigate both the prevalence and clinical characteristics of serositis in Chinese patients with systemic lupus erythematosus (SLE) in a large cohort in the Chinese SLE Treatment and Research group (CSTAR) database. Methods A prospective cross-sectional study of patients with SLE was conducted based on the data from the CSTAR registry. Serositis was defined according to the 1999 revised American College of Rheumatology (ACR) criteria for SLE – that is, pleuritis/pleural effusion and/or pericarditis/pericardial effusion detected by echocardiography, chest X-ray or chest computerized tomography (CT) scan. Peritonitis/peritoneal effusion were confirmed by abdominal ultrasonography. We analysed the prevalence and clinical associations of serositis with demographic data, organ involvements, laboratory findings and SLE disease activity. Results Of 2104 patients with SLE, 345 were diagnosed with serositis. The prevalence of lupus nephritis (LN), interstitial lung disease and pulmonary arterial hypertension, as well as the presence of leukocytopenia, thrombocytopenia, hypocomplementemia and anti-dsDNA antibodies was significantly higher in patients with serositis ( P < 0.05). Significantly higher SLE disease activity scores were found in patients with serositis compared to those patients without serositis ( P < 0.05). Lupus-related peritonitis had similar clinical manifestations and laboratory profiles as serositis caused by SLE. Conclusions There is a significant association of nephropathy, interstitial lung disease, pulmonary arterial hypertension, hypocomplementemia, leukocytopenia, thrombocytopenia and elevated anti-dsDNA antibodies with serositis. The results suggest that higher SLE disease activity contributes to serositis development, and should be treated aggressively.
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Affiliation(s)
- J Zhao
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences; Key Laboratory of Rheumatology and Clinical Immunology, Beijing, China
| | - W Bai
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences; Key Laboratory of Rheumatology and Clinical Immunology, Beijing, China
| | - P Zhu
- Department of Clinical Immunology and Rheumatology, Xijing Hospital affiliated to the Fourth Military Medical University, Shanxi, China
| | - X Zhang
- Department of Rheumatology, Guangdong Provincial People's Hospital, Guangzhou, China
| | - S Liu
- Department of Rheumatology, First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - L Wu
- Department of Rheumatology, the People's Hospital of Xinjiang Autonomous, Urumqi, China
| | - L Ma
- Department of Rheumatology, China–Japan Friendship Hospital Affiliated to the Ministry of Health of PRC, Beijing, China
| | - L Bi
- Department of Rheumatology, Sino-Japanese friendship Hospital of Jilin University, Changchun, China
| | - X Zuo
- Department of Rheumatology, Xiangya Hospital, Central South University, Changsha, China
| | - L Sun
- Department of Rheumatology, Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
| | - C Huang
- Department of Rheumatology, Beijing Hospital Affiliated to the Ministry of Health of PRC, Beijing, China
| | - X Tian
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences; Key Laboratory of Rheumatology and Clinical Immunology, Beijing, China
| | - M Li
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences; Key Laboratory of Rheumatology and Clinical Immunology, Beijing, China
| | - Y Zhao
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences; Key Laboratory of Rheumatology and Clinical Immunology, Beijing, China
| | - X Zeng
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences; Key Laboratory of Rheumatology and Clinical Immunology, Beijing, China
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21
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Bi L, Liang ZC. Short communication: Investigation on dynamics and self-diffusion coefficient of [BMIM][PF6] via molecular dynamics simulations. Russ J Phys Chem B 2016. [DOI: 10.1134/s1990793115060226] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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22
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Fan JJ, Cao LG, Bi L, Pei GX. A rat model designed for the continuous intraarterial infusion of cyclosporine. Transplant Proc 2015; 47:549-52. [PMID: 25769605 DOI: 10.1016/j.transproceed.2014.11.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2014] [Revised: 10/22/2014] [Accepted: 11/19/2014] [Indexed: 11/24/2022]
Abstract
BACKGROUND Limb allotransplantation is not a life-saving treatment. However, large doses of immunosuppressive agents are needed. There is an urgent need to increase the selectivity and targeting of drugs. METHODS We designed a rat model for intraarterial infusion of cyclosporine (CSA) based on the hindlimb replanted model to simulate the limb allotransplantation. To investigate whether intraartery infusion could improve the drug's distribution, we infused CSA 4.0 mg/kg per day continuously into either the superficial epigastric artery (IA group) or superficial epigastric vein (IV group) of Lewis rats. RESULTS On day 10, CSA concentrations were measured in skin, muscle, and bone tissues of hindlimb. Samples were taken from different parts of the bilateral hindlimbs in the IA group and right hindlimb only in the IV group. Tissue concentrations of the perfusion side were much higher in IA group. Systemic concentrations of IA group were higher than IV group. CONCLUSIONS These results warrant further research in our next limb allotransplantation model.
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Affiliation(s)
- J-J Fan
- Department of Orthopaedic Surgery, Xi Jing Hospital, Fourth Military Medical University, Xi'an, China
| | - L-G Cao
- Department of Orthopaedic Surgery, Guangzhou Red Cross Hospital, Guangzhou, China
| | - L Bi
- Department of Orthopaedic Surgery, Xi Jing Hospital, Fourth Military Medical University, Xi'an, China.
| | - G-X Pei
- Department of Orthopaedic Surgery, Xi Jing Hospital, Fourth Military Medical University, Xi'an, China.
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23
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Wei D, Zhu H, Li Z, Bi L, Zhao W. Use and evaluation of the pedicled sternocleidomastoid flap in oral and maxillofacial surgery. Int J Oral Maxillofac Surg 2015. [DOI: 10.1016/j.ijom.2015.08.380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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24
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An Y, Liu T, Li Z, He D, Wu L, Li J, Liu Y, Bi L, Zhou B, Lin C, He L, Liu X, Li X, Yang N, Zhang Z, Song H, Wei W, Liu J. AB1194 Treatment of Rheumatoid Arthritis with Biological Dmards in China: A Multi-Center Cross-Sectional Study. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.3640] [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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Liu T, An Y, Li Z, He D, Wu L, Li J, Liu Y, Bi L, Zhou B, Lin C, He L, Liu X, Li X, Yang N, Zhang Z, Song H, Wei W, Liu J. AB1193 Usage Pattern of Concomitant Therapy with Biological Dmards in Chinese Patients with Rheumatoid Arthritis: A Multi-Center Cross-Sectional Study. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.3676] [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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26
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Pei L, Wang S, Jin H, Bi L, Wei N, Yan H, Yang X, Yao C, Xu M, Shu S, Guo Y, Yan H, Wu J, Li H, Pang P, Tian T, Tian Q, Zhu LQ, Shang Y, Lu Y. A Novel Mechanism of Spine Damages in Stroke via DAPK1 and Tau. Cereb Cortex 2015; 25:4559-71. [PMID: 25995053 PMCID: PMC4816799 DOI: 10.1093/cercor/bhv096] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Synaptic spine loss is one of the major preceding consequences of stroke damages, but its underlying molecular mechanisms remain unknown. Here, we report that a direct interaction of DAPK1 with Tau causes spine loss and subsequently neuronal death in a mouse model with stroke. We found that DAPK1 phosphorylates Tau protein at Ser262 (pS(262)) in cortical neurons of stroke mice. Either genetic deletion of DAPK1 kinase domain (KD) in mice (DAPK1-KD(-/-)) or blocking DAPK1-Tau interaction by systematic application of a membrane permeable peptide protects spine damages and improves neurological functions against stroke insults. Thus, disruption of DAPK1-Tau interaction is a promising strategy in clinical management of stroke.
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Affiliation(s)
- Lei Pei
- Department of Neurobiology, School of Basic Medicine The Institute for Brain Research (IBR), Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, China
| | - Shan Wang
- Department of Physiology, School of Basic Medicine The Institute for Brain Research (IBR), Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, China
| | - Huijuan Jin
- Department of Physiology, School of Basic Medicine The Institute for Brain Research (IBR), Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, China
| | - Linlin Bi
- Department of Physiology, School of Basic Medicine The Institute for Brain Research (IBR), Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, China
| | - Na Wei
- Department of Physiology, School of Basic Medicine The Institute for Brain Research (IBR), Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, China
| | - Honglin Yan
- Department of Physiology, School of Basic Medicine The Institute for Brain Research (IBR), Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, China
| | - Xin Yang
- Department of Physiology, School of Basic Medicine The Institute for Brain Research (IBR), Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, China
| | - Chengye Yao
- Department of Physiology, School of Basic Medicine The Institute for Brain Research (IBR), Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, China
| | - Mengmeng Xu
- Department of Physiology, School of Basic Medicine The Institute for Brain Research (IBR), Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, China
| | - Shu Shu
- Department of Physiology, School of Basic Medicine The Institute for Brain Research (IBR), Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, China
| | - Yu Guo
- Department of Physiology, School of Basic Medicine The Institute for Brain Research (IBR), Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, China
| | - Huanhuan Yan
- Department of Physiology, School of Basic Medicine The Institute for Brain Research (IBR), Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, China
| | - Jianhua Wu
- Department of Physiology, School of Basic Medicine The Institute for Brain Research (IBR), Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, China
| | - Hao Li
- Department of Physiology, School of Basic Medicine The Institute for Brain Research (IBR), Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, China
| | - Pei Pang
- Department of Physiology, School of Basic Medicine The Institute for Brain Research (IBR), Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, China
| | - Tian Tian
- Department of Physiology, School of Basic Medicine The Institute for Brain Research (IBR), Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, China
| | - Qing Tian
- Department of Pathophysiology, School of Basic Medicine and The Institute for Brain Research (IBR), Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, China
| | - Ling-Qiang Zhu
- Department of Pathophysiology, School of Basic Medicine and The Institute for Brain Research (IBR), Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, China
| | - You Shang
- The Institute for Brain Research (IBR), Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, China Department of Critical Care Medicine, Institute of Anesthesia and Critical Care, Union Hospital, Wuhan, China
| | - Youming Lu
- Department of Physiology, School of Basic Medicine The Institute for Brain Research (IBR), Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, China Department of Critical Care Medicine, Institute of Anesthesia and Critical Care, Union Hospital, Wuhan, China
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Zhang S, Su J, Li X, Zhang X, Liu S, Wu L, Ma L, Bi L, Zuo X, Sun L, Huang C, Zhao J, Li M, Zeng X. Chinese SLE Treatment and Research group (CSTAR) registry: V. gender impact on Chinese patients with systemic lupus erythematosus. Lupus 2015; 24:1267-75. [PMID: 25972364 DOI: 10.1177/0961203315585813] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2014] [Accepted: 04/14/2015] [Indexed: 12/11/2022]
Abstract
Introduction Many studies have shown that differences were observed between male and female lupus patients. Although systemic lupus erythematosus (SLE) affects mostly females (female:male ratio 9:1), male SLE patients show higher mortality due to kidney and neurological disease. Currently there are limited epidemiological data concerning lupus in the Chinese population. As such, the Chinese SLE Treatment and Research group (CSTAR) developed the first online registry of Chinese lupus patients in 2009, and represents a multicenter observational study that attempts to describe and compile the major clinical characteristics of lupus in Chinese patients. Objective To investigate the effect of gender on the phenotypes of Chinese SLE patients. Patients and methods Data for 2104 SLE patients were prospectively collected and included in the CSTAR registry. Patients fulfilled the 1997 American College of Rheumatology (ACR) SLE classification criteria. We conducted a cross-sectional case-control study to analyze patient clinical and laboratory data at onset and at enrollment. SLE disease activity scores (SLEDAI) were also measured at enrollment. Results This study included 1914 women and 190 men. Males and females showed no differences in mean ages at onset, delay of diagnosis and disease duration. Males presented more frequently with fever ( p = 0.003), while musculoskeletal involvement ( p = 0.001) and cytopenia ( p = 0.017) was more common in females as the initial manifestation at onset of SLE. For manifestations at enrollment, males presented more frequently with fever ( p = 0.005), renal disease ( p = 0.019), vasculitis ( p = 0.032) and neuropsychiatric lupus ( p = 0.007). For cumulative manifestations at enrollment, males presented more frequently with discoid rash ( p < 0.001) and neuropsychiatric lupus ( p = 0.036), while less frequently with arthritis ( p = 0.011). However, the laboratory data showed no significant differences between the two groups at enrollment. Males also had higher SLEDAI scores at enrollment ( p = 0.002). Conclusions Renal disease, vasculitis and neuropsychiatric lupus are more common in male SLE patients with higher SLEDAI scores compared to female SLE patients in China.
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Affiliation(s)
- S Zhang
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - J Su
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - X Li
- Department of Rheumatology, the Second Hospital of Shanxi Medical University, Shanxi, China
| | - X Zhang
- Department of Rheumatology, Guangdong Provincial People’s Hospital, Guangzhou, China
| | - S Liu
- Department of Rheumatology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - L Wu
- Department of Rheumatology, the People's Hospital of Xinjiang Autonomous, Urumqi, China
| | - L Ma
- Department of Rheumatology, China-Japan Friendship Hospital Affiliated to the Ministry of Health of PRC, Beijing, China
| | - L Bi
- Department of Rheumatology, Sino-Japanese Friendship Hospital of Jilin University, Changchun, China
| | - X Zuo
- Department of Rheumatology, Xiangya Hospital, Central South University, Changsha, China
| | - L Sun
- Department of Rheumatology, the Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
| | - C Huang
- Department of Rheumatology, Beijing Hospital Affiliated to the Ministry of Health of PRC, Beijing, China
| | - J Zhao
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - M Li
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - X Zeng
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
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Cao J, Miao Q, Miao S, Bi L, Zhang S, Yang Q, Zhou X, Zhang M, Xie Y, Zhang J, Wang S. Tetramethylpyrazine (TMP) exerts antitumor effects by inducing apoptosis and autophagy in hepatocellular carcinoma. Int Immunopharmacol 2015; 26:212-20. [PMID: 25841319 DOI: 10.1016/j.intimp.2015.03.028] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Revised: 03/19/2015] [Accepted: 03/23/2015] [Indexed: 01/04/2023]
Abstract
Hepatocellular carcinoma (HCC) is one of the most common types of liver cancers with high recurrence rate and mortality rate. Recent studies have indicated that tetramethylpyrazine (TMP), a purified chemical extracted from Ligusticum wallichii Franchat (ChuanXiong), possessed antitumor effects on HCC, but detailed mechanism remains unclear. Our study aims at investigating the antitumor effect of TMP on HCC and its underlying mechanism. We found that TMP inhibited cell proliferation of HepG2 cells in a dose-dependent way, and xenograft tumor models also indicated that high concentrations of TMP administration inhibited tumor growth. Next, flow cytometric analysis and transmission electron microscope images showed that TMP enhanced cell apoptosis in HepG2 cells, and western blot results showed that TMP promoted cleavage of caspase-3 and PARP in vitro and in vivo. We also found that TMP caused autophagy in HCC in vitro and in vivo. In order to examine the role of autophagy in TMP-induced apoptosis, 3-methyladenine (3-MA) was used to block the action of autophagy. Our data showed TMP-induced autophagy might be a pro-apoptosis process in HCC. Furthermore, the results of anti-oxidative enzymes and oxidation-sensitive fluorescent probe 2, 7-dichlorofluorescein diacetate (DCFH-DA) indicated that TMP induced ROS generation and inhibition of ROS diminished the anticancer function of TMP. In conclusion, our studies provide new insights into the mechanisms underlying the antitumor effect of TMP and suggest that TMP can be a novel therapeutic regimen for HCC.
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Affiliation(s)
- Jiao Cao
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Qing Miao
- Department of Pharmacy, 401 Military Hospital, Qingdao 266071, China.
| | - Shan Miao
- Institute of Materia Medica, Fourth Military Medical University, Xi'an 710032, China
| | - Linlin Bi
- Institute of Materia Medica, Fourth Military Medical University, Xi'an 710032, China
| | - Song Zhang
- Department of Pharmacy, Tangdu Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Qian Yang
- Institute of Materia Medica, Fourth Military Medical University, Xi'an 710032, China
| | - Xuanxuan Zhou
- Institute of Materia Medica, Fourth Military Medical University, Xi'an 710032, China
| | - Meng Zhang
- Institute of Materia Medica, Fourth Military Medical University, Xi'an 710032, China
| | - Yanhua Xie
- Institute of Materia Medica, Fourth Military Medical University, Xi'an 710032, China
| | - Jin Zhang
- Department of Hand Surgery, 401 Military Hospital, Qingdao 266071, China
| | - Siwang Wang
- Institute of Materia Medica, Fourth Military Medical University, Xi'an 710032, China.
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29
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Cao J, Miao Q, Zhang J, Miao S, Bi L, Zhang S, Yang Q, Zhou X, Zhang M, Xie Y, Wang S. INHIBITORY EFFECT OF TETRAMETHYLPYRAZINE ON HEPATOCELLULAR CARCINOMA: POSSIBLE ROLE OF APOPTOSIS AND CELL CYCLE ARREST. J BIOL REG HOMEOS AG 2015; 29:297-306. [PMID: 26122217] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Hepatocellular carcinoma (HCC) is the fifth most common cancer. An important approach to control HCC is chemoprevention. This study aims at investigating the antitumor effect of Tetramethylpyrazine (TMP). Rats were injected with N-Nitrosodiethylamine (DEN) to establish HCC. Tumor development was observed. Liver function was evaluated. Apoptosis and cell cycle arrest-related makers and signaling cascades were determined by Western blot, RT-PCR and flow cytometric analysis. The administration of TMP could significantly inhibit tumor development in DEN-induced HCC rats, shown by reduced incidence of tumor, decreased number of tumor nodules and reduced maximal size of tumor. DEN-induced increase of aspartate aminotransferase, alanine aminotransferase, lactate dehydrogenase and alkaline phosphatase activities were significantly inhibited by TMP. TMP exhibited inhibitory effect on HCC through induction of apoptosis and cell cycle arrest in rats. TMP induced apoptosis through increasing Bax, decreasing Bcl-2, increasing the release of cytochrome c, and activating caspase, which consisted of the mitochondrial apoptotic pathway. TMP induced G2/M cell cycle arrest through down-regulation of cyclin B1/cdc2. In addition, inhibition of Akt and ERK signaling and the antioxidant activities of TMP may also contribute to its antitumor effect. These data provide new insight into the mechanisms underlying the antitumor effect of TMP.
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MESH Headings
- Alanine Transaminase/blood
- Alkaline Phosphatase/blood
- Animals
- Antineoplastic Agents, Phytogenic/pharmacology
- Antineoplastic Agents, Phytogenic/therapeutic use
- Antioxidants/metabolism
- Apoptosis/drug effects
- Apoptosis Regulatory Proteins/biosynthesis
- Apoptosis Regulatory Proteins/genetics
- Aspartate Aminotransferases/blood
- Cell Cycle/drug effects
- Diethylnitrosamine
- Drug Screening Assays, Antitumor
- Gene Expression Regulation, Neoplastic/drug effects
- Hepatocytes/drug effects
- Hepatocytes/pathology
- L-Lactate Dehydrogenase/blood
- Liver Neoplasms, Experimental/blood
- Liver Neoplasms, Experimental/drug therapy
- Liver Neoplasms, Experimental/genetics
- Liver Neoplasms, Experimental/pathology
- Mitochondria, Liver/drug effects
- Neoplasm Proteins/biosynthesis
- Neoplasm Proteins/blood
- Neoplasm Proteins/genetics
- Oxidation-Reduction
- Pyrazines/pharmacology
- Pyrazines/therapeutic use
- Rats
- Rats, Wistar
- Signal Transduction/drug effects
- Tumor Burden
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Affiliation(s)
- J Cao
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xian, China
| | - Q Miao
- Department of Pharmacy, 401 Military Hospital, Qingdao, China
| | - J Zhang
- Department of Hand Surgery, 401 Military Hospital, Qingdao, China
| | - S Miao
- Institute of Materia Medica, Fourth Military Medical University, Xian, China
| | - L Bi
- Institute of Materia Medica, Fourth Military Medical University, Xian, China
| | - S Zhang
- Department of Pharmacy, Tangdu Hospital, Fourth Military Medical University, Xian, China
| | - Q Yang
- Institute of Materia Medica, Fourth Military Medical University, Xian, China
| | - X Zhou
- Institute of Materia Medica, Fourth Military Medical University, Xian, China
| | - M Zhang
- Institute of Materia Medica, Fourth Military Medical University, Xian, China
| | - Y Xie
- Institute of Materia Medica, Fourth Military Medical University, Xian, China
| | - S Wang
- Institute of Materia Medica, Fourth Military Medical University, Xian, China
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Yang Q, Zhou X, Zhang M, Bi L, Miao S, Cao W, Xie Y, Sun J, Tang H, Li Y, Miao Q, Wang S. Angel of human health: current research updates in toad medicine. Am J Transl Res 2015; 7:1-14. [PMID: 25755824 PMCID: PMC4346519] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Accepted: 11/25/2014] [Indexed: 06/04/2023]
Abstract
There are currently 34 genera and 410 species of toads in the world. The medicinal parts of toads mainly include their venom, skin, and clothing. The toad's venom and skin possess the same chemical components, mainly the toad venom lactone class, and their pharmacological effects primarily include the maintenance of strong heart, antitumor, antivirus, anti-infection, and analgesic effects. So far, the produces from the medicinal raw materials of the toad are widely used clinically around the world, especially in China, Japan, and South Korea. About 50 varieties of medicines are used in the clinical treatment of various complicated diseases in China, such as "Liushen pills" which was popular in the whole world. Toads are mainly used in treating malignant tumors (e.g., liver cancer, gastric cancer, esophageal cancer, colon cancer, cervical cancer, among others), and some major diseases such as hepatitis B. Despite the therapeutic effects of toad-derived medicines on human health, there is insufficient research and development of toad-derived medicines by leading drug companies. In order to harness the beneficial effects of the resources of the toad species, it is the responsibility of global pharmaceutical researchers to develop and generate economically feasible toad-derived therapeutic products, while promoting maximum protection to the resources of the toad species.
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Affiliation(s)
- Qian Yang
- Institute of Materia Medica, School of Pharmacy, Fourth Military Medical UniversityXi’an, 710032, China
- The Cultivation Project of Collaborative Innovation Center for Chinese Medicine in QinBa MountainsXi’an 710032, China
| | - Xuanxuan Zhou
- Institute of Materia Medica, School of Pharmacy, Fourth Military Medical UniversityXi’an, 710032, China
- The Cultivation Project of Collaborative Innovation Center for Chinese Medicine in QinBa MountainsXi’an 710032, China
| | - Meng Zhang
- Institute of Materia Medica, School of Pharmacy, Fourth Military Medical UniversityXi’an, 710032, China
- The Cultivation Project of Collaborative Innovation Center for Chinese Medicine in QinBa MountainsXi’an 710032, China
| | - Linlin Bi
- Institute of Materia Medica, School of Pharmacy, Fourth Military Medical UniversityXi’an, 710032, China
- The Cultivation Project of Collaborative Innovation Center for Chinese Medicine in QinBa MountainsXi’an 710032, China
| | - Shan Miao
- Institute of Materia Medica, School of Pharmacy, Fourth Military Medical UniversityXi’an, 710032, China
- The Cultivation Project of Collaborative Innovation Center for Chinese Medicine in QinBa MountainsXi’an 710032, China
| | - Wei Cao
- Institute of Materia Medica, School of Pharmacy, Fourth Military Medical UniversityXi’an, 710032, China
- The Cultivation Project of Collaborative Innovation Center for Chinese Medicine in QinBa MountainsXi’an 710032, China
| | - Yanhua Xie
- Institute of Materia Medica, School of Pharmacy, Fourth Military Medical UniversityXi’an, 710032, China
- The Cultivation Project of Collaborative Innovation Center for Chinese Medicine in QinBa MountainsXi’an 710032, China
| | - Jiyuan Sun
- Institute of Materia Medica, School of Pharmacy, Fourth Military Medical UniversityXi’an, 710032, China
- The Cultivation Project of Collaborative Innovation Center for Chinese Medicine in QinBa MountainsXi’an 710032, China
| | - Haifeng Tang
- Institute of Materia Medica, School of Pharmacy, Fourth Military Medical UniversityXi’an, 710032, China
- The Cultivation Project of Collaborative Innovation Center for Chinese Medicine in QinBa MountainsXi’an 710032, China
| | - Ying Li
- Institute of Materia Medica, School of Pharmacy, Fourth Military Medical UniversityXi’an, 710032, China
- The Cultivation Project of Collaborative Innovation Center for Chinese Medicine in QinBa MountainsXi’an 710032, China
| | - Qing Miao
- Institute of Materia Medica, School of Pharmacy, Fourth Military Medical UniversityXi’an, 710032, China
- The Cultivation Project of Collaborative Innovation Center for Chinese Medicine in QinBa MountainsXi’an 710032, China
| | - Siwang Wang
- Institute of Materia Medica, School of Pharmacy, Fourth Military Medical UniversityXi’an, 710032, China
- The Cultivation Project of Collaborative Innovation Center for Chinese Medicine in QinBa MountainsXi’an 710032, China
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Liu X, Cao Y, Gao G, Mao R, Bi L, Geng M. Gene expression profile of type II spinal cord decompression sickness. Spinal Cord 2014; 52:606-10. [PMID: 24796448 DOI: 10.1038/sc.2014.65] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2014] [Accepted: 04/01/2014] [Indexed: 01/03/2023]
Abstract
STUDY DESIGN This study was an experimental, controlled, animal study. OBJECTIVE This study was to determine the changes of molecular pathology in spinal cord decompression sickness (SC-DCS) based on a rabbit model of SC-DCS with the aid of an all-gene expression profile chip. SETTING Qingdao, Shandong Province, China. METHODS A gene expression profile chip containing 43 803 genes was used to compare the gene expressions in the spinal cords of four male New Zealand white rabbits in the SC-DCS and control groups, respectively. Selected differentially expressed genes were identified with quantitative real-time reverse transcription polymerase chain reaction (qRT-PCR) and immunohistochemistry. RESULTS The chip hybridization results showed that the SC-DCS group had nine upregulated and seventeen downregulated genes, compared with the control group. These genes were mainly related to inflammation, ion channels, the cell cycle, material transfer and apoptosis. The qRT-PCR results showed that parathyroid hormone and tumor necrosis factor alpha (TNF-α) genes were upregulated compared with the control group (P<0.01). However, the acyl-CoA synthetase and voltage-gated channel genes were downregulated (P<0.05). The immunohistochemical staining results confirmed that there were significantly greater expression levels of TNF-α in the spinal cord tissues of the SC-DCS group compared with the control group. CONCLUSIONS The spinal cord lesions of SC-DCS involve multiple gene changes in the rabbit; however, the significance of these findings needs further research. Meanwhile, the gene expression profile chip results provide us with a better understanding of the pathogenesis of DCS.
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Affiliation(s)
- X Liu
- Department of Pathology, General Hospital of Jinan Military Command, Jinan, China
| | - Y Cao
- Department of Pathology, General Hospital of Jinan Military Command, Jinan, China
| | - G Gao
- Department of Hyperbaric Medicine, No. 401, Hospital of PLA, Qingdao, China
| | - R Mao
- Department of Pathology, General Hospital of Jinan Military Command, Jinan, China
| | - L Bi
- Department of Pathology, General Hospital of Jinan Military Command, Jinan, China
| | - M Geng
- Department of Pathology, General Hospital of Jinan Military Command, Jinan, China
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Lu C, Zhang J, Shi X, Miao S, Bi L, Zhang S, Yang Q, Zhou X, Zhang M, Xie Y, Miao Q, Wang S. Neuroprotective effects of tetramethylpyrazine against dopaminergic neuron injury in a rat model of Parkinson's disease induced by MPTP. Int J Biol Sci 2014; 10:350-7. [PMID: 24719552 PMCID: PMC3979987 DOI: 10.7150/ijbs.8366] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2013] [Accepted: 01/31/2014] [Indexed: 02/06/2023] Open
Abstract
Parkinson's disease (PD) is the second most prevalent progressive neurodegenerative disease. Although several hypotheses have been proposed to explain the pathogenesis of PD, apoptotic cell death and oxidative stress are the most prevalent mechanisms. Tetramethylpyrazine (TMP) is a biological component that has been extracted from Ligusticum wallichii Franchat (ChuanXiong), which exhibits anti-apoptotic and antioxidant roles. In the current study, we aimed to investigate the possible protective effect of TMP against dopaminergic neuron injury in a rat model of Parkinson's disease induced by MPTP and to elucidate probable molecular mechanisms. The results showed that TMP could notably prevent MPTP-induced dopaminergic neurons damage, reflected by improvement of motor deficits, enhancement of TH expression and the content of dopamine and its metabolite, DOPAC. We observed MPTP-induced activation of mitochondrial apoptotic death pathway, evidenced by up-regulation of Bax, down-regulation of Bcl-2, release of cytochrome c and cleavage of caspase 3, which was significantly inhibited by TMP. Moreover, TMP could prevent MPTP-increased TBARS level and MPTP-decreased GSH level, indicating the antioxidant role of TMP in PD model. And the antioxidant role of TMP attributes to the prevention of MPTP-induced reduction of Nrf2 and GCLc expression. In conclusion, in MPTP-induced PD model, TMP prevents the down-regulation of Nrf2 and GCLc, maintaining redox balance and inhibiting apoptosis, leading to the attenuation of dopaminergic neuron damage. The effectiveness of TMP in treating PD potentially leads to interesting therapeutic perspectives.
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Affiliation(s)
- Chen Lu
- 1. Institute of Materia, Fourth Military Medical University, Xi'an 710032, China
| | - Jin Zhang
- 2. Department of Hand Surgery, 401 Military Hospital, Qingdao 266071, China
| | - Xiaopeng Shi
- 3. Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Shan Miao
- 1. Institute of Materia, Fourth Military Medical University, Xi'an 710032, China
| | - Linlin Bi
- 1. Institute of Materia, Fourth Military Medical University, Xi'an 710032, China
| | - Song Zhang
- 4. Department of Pharmacy, Tangdu Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Qian Yang
- 1. Institute of Materia, Fourth Military Medical University, Xi'an 710032, China
| | - Xuanxuan Zhou
- 1. Institute of Materia, Fourth Military Medical University, Xi'an 710032, China
| | - Meng Zhang
- 1. Institute of Materia, Fourth Military Medical University, Xi'an 710032, China
| | - Yanhua Xie
- 1. Institute of Materia, Fourth Military Medical University, Xi'an 710032, China
| | - Qing Miao
- 1. Institute of Materia, Fourth Military Medical University, Xi'an 710032, China
| | - Siwang Wang
- 1. Institute of Materia, Fourth Military Medical University, Xi'an 710032, China
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Shi A, Dong Y, Bi L, Xu N, Fan Z, Li S, Yang H, Li Y. Abstract P5-03-14: Expression of ALDH1 in metastasizing axillary lymphnodes in breast cancer. Cancer Res 2012. [DOI: 10.1158/0008-5472.sabcs12-p5-03-14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: There is increasing evidences that a wide variety of malignancies, including breast cancer, may be driven by a small subset of ‘tumor-initiating cells’ or ‘cancer stem cells’ (CSC) which are able to form tumors in immunocompromised mice as well as to generate the phenotypic heterogeneity of the initial tumor. Enzyme aldehyde dehydrogenase (ALDH1) has been reported as a possible marker for mammary CSC. These cells are a source of tumor recurrence and metastasis, and are resistant to chemotherapy, radiotherapy and hormone therapy.
Objective: Assuming that the detection of CSC in axillary lymph nodes is more effective to predicting cancer outcome than the widely used detection of cancer cells in axillary lymph nodes, we measure ALDH1 levels to predict their presence into axillary lymph nodes on development of cancer and anticipate outcomes.
Methods: ALDH1 protein was detected by an immunohistochemical technique in 229 cases of breast cancer diagnosed from 2002 to 2011 Follow-up ranged from 11.5 months to 96.9 months, with a mean of 73.9 months. A survival assay was used to determine the relationship between distant metastatic rate and survival rate.
Results: ALDHl expression was detected in 79cases and the Positive rate in metastatic axillary lymph nodes was 34.5%. Negative ER, PR status were related to the ALDH1 positive cases(P = 0.012). See Table 1. Mortality rate between ALDH1 positive cases (50.8%) and negative cases (28.8%) were significantly different (P = 0.001). See Table 2. Further, survival analysis of recurrence-free survivals (RFS) and survival rate decreased significantly between ALDHl positive and negative cases (P = 0.001) (see table 2) and COX analysis shows that ALDH1 expression is an independent predictor of poor outcome in breast cancer(P = 0.011).
Discussion: What cancer stem cells migrate to the axillary nodes have more important prediction than that the matastesis of normal cancar cells in axillary node. It might be a role resulting in dying in breast cancer.
Citation Information: Cancer Res 2012;72(24 Suppl):Abstract nr P5-03-14.
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Affiliation(s)
- A Shi
- First Hospital of Bethune Medical College, Jilin University, Changchun, Jilin, China; Lester & Sue Smith Breast Center, Baylor College of Medicine, Houston, TX
| | - Y Dong
- First Hospital of Bethune Medical College, Jilin University, Changchun, Jilin, China; Lester & Sue Smith Breast Center, Baylor College of Medicine, Houston, TX
| | - L Bi
- First Hospital of Bethune Medical College, Jilin University, Changchun, Jilin, China; Lester & Sue Smith Breast Center, Baylor College of Medicine, Houston, TX
| | - N Xu
- First Hospital of Bethune Medical College, Jilin University, Changchun, Jilin, China; Lester & Sue Smith Breast Center, Baylor College of Medicine, Houston, TX
| | - Z Fan
- First Hospital of Bethune Medical College, Jilin University, Changchun, Jilin, China; Lester & Sue Smith Breast Center, Baylor College of Medicine, Houston, TX
| | - S Li
- First Hospital of Bethune Medical College, Jilin University, Changchun, Jilin, China; Lester & Sue Smith Breast Center, Baylor College of Medicine, Houston, TX
| | - H Yang
- First Hospital of Bethune Medical College, Jilin University, Changchun, Jilin, China; Lester & Sue Smith Breast Center, Baylor College of Medicine, Houston, TX
| | - Y Li
- First Hospital of Bethune Medical College, Jilin University, Changchun, Jilin, China; Lester & Sue Smith Breast Center, Baylor College of Medicine, Houston, TX
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Wang J, Meisenberg O, Chen YH, Bi L, Tschiersch J. Mitigation of thoron exposure by application of wallpaper as a diffusion barrier. Radiat Prot Dosimetry 2012; 152:94-97. [PMID: 22908346 DOI: 10.1093/rpd/ncs197] [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] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Increasing attention has been paid in recent years to the radioactive gas thoron ((220)Rn), which can cause a significant exposure and increase of lung cancer risk in some regions worldwide. Some experiments were designed to examine whether different types of wall decoration in the room, from ordinary newsprint to commercial wallpaper, can mitigate the concentrations of indoor thoron decay products. Decoration with coated paper was very effective in decreasing the thoron decay products concentration, thus reducing the effective dose by 90 %, while newsprint decoration, which is common in many rural parts of the world, was found to have a smaller but still significant effect in reducing the thoron decay products concentration when applied to the same house.
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Affiliation(s)
- J Wang
- Helmholtz Zentrum München, German Research Center for Environmental Health, Institute of Radiation Protection, Ingolstädter Landstr. 1, 85764 Neuherberg, Germany
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Li J, Miao S, Xie Y, Wang J, Cao W, Bi L, Wang S. Pharmacokinetics and Tissue Distribution Study of Tryptanthrin in Rats by RP-HPLC with DAD Detector. Chromatographia 2012. [DOI: 10.1007/s10337-012-2322-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Manjur M, Mohilal N, Pramodini M, Bi L. Parasitic Nematodes of some Insects from Manipur, India. Parasitology 2012. [DOI: 10.5772/33123] [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: 11/08/2022]
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Bi L, Tian X, Dou F, Hong L, Tang H, Wang S. New antioxidant and antiglycation active triterpenoid saponins from the root bark of Aralia taibaiensis. Fitoterapia 2011; 83:234-40. [PMID: 22088497 DOI: 10.1016/j.fitote.2011.11.002] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2011] [Revised: 10/25/2011] [Accepted: 11/01/2011] [Indexed: 11/16/2022]
Abstract
Four new oleanane type triterpenoid saponins (1-4) and a known saponin (5) were isolated from the root bark of Aralia taibaiensis Z.Z. Wang et H.C. Zheng. The structures of the four new compounds were elucidated as 3-O-{β-D-glucopyranosyl-(1→2)-[β-D-glucopyranosyl-(1→3)]-β-D-glucurono-pyranosyl}-olean-11,13(18)-diene-28-oic acid 28-O-β-D-glucopyranosyl ester (1), 3-O-{β-D-gluco-pyranosyl-(1→3)-[α-l-arabinofuranosyl-(1→4)]-β-D-glucuronopyranosyl}-olean-11,13(18)-diene-28-oic acid 28-O-β-D-glucopyranosyl ester (2), 3-O-{β-d-glucopyranosyl-(1→2)-[α-l-arabinofuranosyl-(1→4)]-β-D-glucuronopyranosyl}-oleanolic acid 28-O-β-D-glucopyranosyl ester (3) and 3-O-{β-D-glucopyranosyl-(1→2)-[β-D-glucopyranosyl-(1→3)]-β-D-glucuronopyranosyl}-oleanolic acid 28-O-β-D-glucopyranosyl ester (4), on the basis of extensive spectral analysis and chemical evidence. Compounds 1-5 exhibited moderate effects on antioxidant and antiglycation activities, which correlated with treatment of diabetes mellitus.
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Affiliation(s)
- Linlin Bi
- Institute of Materia Medica, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, PR China
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Chi S, Cai W, Liu P, Zhang Z, Chen X, Gao L, Qi J, Bi L, Chen L, Qi Z. Baifuzi reduces transient ischemic brain damage through an interaction with the STREX domain of BKCa channels. Cell Death Dis 2011; 1:e13. [PMID: 21364615 PMCID: PMC3039290 DOI: 10.1038/cddis.2009.10] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Stroke is a long-term disability and one of the leading causes of death. However, no successful therapeutic intervention is available for the majority of stroke patients. In this study, we explored a traditional Chinese medicine Baifuzi (Typhonium giganteum Engl.). We show, at first, that the ethanol extract of Baifuzi exerts neuroprotective effects against brain damage induced by transient global or focal cerebral ischemia in rats and mice. Second, the extract activated large-conductance Ca(2+)-activated K(+) channel (BK(Ca)) channels, and BK(Ca) channel blockade suppressed the neuroprotection of the extract, suggesting that the BK(Ca) is the molecular target of Baifuzi. Third, Baifuzi cerebroside (Baifuzi-CB), purified from its ethanol extract, activated BK(Ca) channels in a manner similar to that of the extract. Fourth, the stress axis hormone-regulated exon (STREX) domain of the BK(Ca) channel directly interacted with Baifuzi-CB, and its deletion suppressed channel activation by Baifuzi-CB. These results indicate that Baifuzi-CB activated the BK(Ca) channel through its direct interaction with the STREX domain of the channel and suggests that Baifuzi-CB merits exploration as a potential therapeutic agent for treating brain ischemia.
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Affiliation(s)
- S Chi
- Department of Physiology, Medical College of Xiamen University, Xiamen, China
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Bi L, Tschiersch J, Meisenberg O, Wielunski M, Li JL, Shang B. Development of a new thoron progeny detector based on SSNTD and the collection by an electric field. Radiat Prot Dosimetry 2011; 145:288-294. [PMID: 21493610 DOI: 10.1093/rpd/ncr078] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The importance of (220)Rn (thoron) progeny for human exposure has been widely recognised in the past decades. Since no stable equilibrium factor was found between indoor thoron and its progeny, and the concentration of thoron progeny varies with time, it is necessary to develop detectors for long-term measurement that directly sample and detect thoron progeny. However, power supply of this kind of detectors has always been a problem. In this study, a set of device that is suitable for long-term measurement is introduced. A high-voltage electric field was formed for the collection of charged aerosols attached by (222)Rn (radon) and thoron progenies on solid-state nuclear track detector. Impact from radon progeny could be eliminated with a shield of Al foil of appropriate thickness. Tests were made both in an experimental house and in a thoron chamber in Helmholtz Zentrum München to determine the parameters and to verify the universality under different conditions.
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Affiliation(s)
- L Bi
- Helmholtz Zentrum München - German Research Centre for Environmental Health, Institute of Radiation Protection, 85764 Neuherberg, Germany
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Bi L, Mukherjea A. Identification of parameters and the distribution of the minimum of the tri-variate normal. Stat Probab Lett 2010. [DOI: 10.1016/j.spl.2010.08.007] [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: 10/19/2022]
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Abstract
The increased indoor thoron level in Europe, North America and Asia has shown that the exposure to thoron and its decay products cannot be ignored in some environments. The contribution of thoron and its progeny can be a significant component of the total exposure from radon and thoron. In the present paper, radiation dose assessment of members of the public of different age and sex exposed to (220)Rn progeny under different daily life activities is performed through a dosimetric approach. Dose conversion coefficients under typical indoor conditions were estimated to be in the range of 107 nSv (Bq h m(-3))(-1) for infant to 81.7 nSv (Bq h m(-3))(-1) for adult. The results of this work emphasized that small children receive a radiation dose of 25% more than adults under the same conditions, and people performing exercise receive a radiation dose 100% more than when sleeping. The results of this work are appropriate to the risk assessment of thoron exposure to members of the public who live in areas with high radon and thoron concentrations.
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Affiliation(s)
- L Bi
- Helmholtz Zentrum München-German Research Center for Environmental Health, Institute of Radiation Protection, Neuherberg, Germany.
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Chalupnik S, Meisenberg O, Bi L, Wang J, Skubacz K, Tschiersch J. Application of LSC and TLD methods for the measurement of radon and thoron decay products in air. Radiat Prot Dosimetry 2010; 141:390-394. [PMID: 20864508 DOI: 10.1093/rpd/ncq223] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Liquid scintillation counting (LSC) is a measuring technique, broadly applied in environmental monitoring. One of the possible applications of LSC is the measurement of radon and thoron progeny. Such a method can be stated as an absolute one. For long-term measurements, a different technique can be applied-monitors of potential alpha energy concentration (PAEC) with thermoluminescent detectors (TLDs). Such solution enables simultaneous measurements of PAEC and dust content. Moreover, the information which is stored in TLD chips is the energy of alpha particles and not the number of counted particles. Therefore, the readout of TL detector directly shows the potential alpha energy, with no dependence on equilibrium factor, etc. This technique, which had been used only for radon progeny measurements, was modified to allow simultaneous measurements of radon and thoron PAEC.
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Su X, Bi L, Hai R, Qimuge S, Ying M, Bahring S, Gong M. HLA-DPB1, -DRB1, and -DQB1 polymorphism defined in Ewenki ethnic minority of China Inner Mongolia Autonomous Region. Int J Immunogenet 2007; 34:435-40. [DOI: 10.1111/j.1744-313x.2007.00718.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Lee BS, Bi L, Garfinkel DJ, Bailis AM. Nucleotide excision repair/TFIIH helicases RAD3 and SSL2 inhibit short-sequence recombination and Ty1 retrotransposition by similar mechanisms. Mol Cell Biol 2000; 20:2436-45. [PMID: 10713167 PMCID: PMC85430 DOI: 10.1128/mcb.20.7.2436-2445.2000] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.7] [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: 10/20/1999] [Accepted: 01/14/2000] [Indexed: 11/20/2022] Open
Abstract
Eukaryotic genomes contain potentially unstable sequences whose rearrangement threatens genome structure and function. Here we show that certain mutant alleles of the nucleotide excision repair (NER)/TFIIH helicase genes RAD3 and SSL2 (RAD25) confer synthetic lethality and destabilize the Saccharomyces cerevisiae genome by increasing both short-sequence recombination and Ty1 retrotransposition. The rad3-G595R and ssl2-rtt mutations do not markedly alter Ty1 RNA or protein levels or target site specificity. However, these mutations cause an increase in the physical stability of broken DNA molecules and unincorporated Ty1 cDNA, which leads to higher levels of short-sequence recombination and Ty1 retrotransposition. Our results link components of the core NER/TFIIH complex with genome stability, homologous recombination, and host defense against Ty1 retrotransposition via a mechanism that involves DNA degradation.
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Affiliation(s)
- B S Lee
- Gene Regulation and Chromosome Biology Laboratory, National Cancer Institute-Frederick Cancer Research and Development Center, National Institutes of Health, Frederick, Maryland 21702-1201, USA
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Bi L, Okabe I, Bernard DJ, Wynshaw-Boris A, Nussbaum RL. Proliferative defect and embryonic lethality in mice homozygous for a deletion in the p110alpha subunit of phosphoinositide 3-kinase. J Biol Chem 1999; 274:10963-8. [PMID: 10196176 DOI: 10.1074/jbc.274.16.10963] [Citation(s) in RCA: 349] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Phosphatidylinositol 3,4,5-trisphosphate is a phospholipid signaling molecule involved in many cellular functions including growth factor receptor signaling, cytoskeletal organization, chemotaxis, apoptosis, and protein trafficking. Phosphorylation at the 3 position of the inositol ring is catalyzed by many different 3-kinases (classified as types IA, IB, II, and III), but the physiological roles played by each of the different 3-kinase isozymes during embryonic development and in homeostasis in animals is incompletely understood. Mammalian type IA kinase isozymes are heterodimers that are active at 37 degrees C when the catalytic 110-kDa subunit interacts through an amino-terminal binding domain with a regulatory 85- or 55-kDa subunit. Using gene targeting in embryonic stem cells, we deleted this binding domain in the gene encoding the alpha isoform of the 110-kDa catalytic subunit (Pik3ca) of the alpha isozyme of the type IA kinases, leading to loss of expression of the p110 catalytic subunit. We show that Pik3cadel/del embryos are developmentally delayed at embryonic day (E) 9.5 and die between E9.5 and E10.5. E9. 5 Pik3cadel/del embryos have a profound proliferative defect but no increase in apoptosis. A proliferative defect is supported by the observation that fibroblasts from Pik3cadel/del embryos fail to replicate in Dulbecco's modified Eagle's medium and fetal calf serum, even with supplemental growth factors.
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Affiliation(s)
- L Bi
- Genetic Diseases Research Branch, NHGRI, National Institutes of Health, Bethesda, Maryland 20892, USA
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Qian J, Borovok M, Bi L, Kazazian HH, Hoyer LW. Inhibitor antibody development and T cell response to human factor VIII in murine hemophilia A. Thromb Haemost 1999; 81:240-4. [PMID: 10063999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
In order to understand better the mechanism of inhibitor formation in hemophilia A patients, we have characterized the immune response to human factor VIII in a murine model of hemophilia A. Mice with severe factor VIII deficiency caused by targeted gene disruptions in exons 16 and 17 were injected intravenously with human factor VIII. Anti-factor VIII was absent or was detected at only very low levels in hemophilic mice of both strains after a single injection of 0.2 microg factor VIII, but it was present in most mice after a second exposure. Subsequent exposures led to high titer anti-factor VIII antibodies in both ELISA and inhibitor assays. A human factor VIII-specific T cell proliferative response was detected with spleen cells obtained three days after a single injection with human factor VIII, before mice had detectable anti-factor VIII antibodies. Subsequent exposures to factor VIII were followed by an increased T cell proliferative response. These studies indicate that murine hemophilia A is a good model for the study of the immune response to human factor VIII, especially the role of the T cell in the early steps in inhibitor antibody formation.
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Affiliation(s)
- J Qian
- Holland Laboratory, American Red Cross, Rockville, MD 20855, USA
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Zhang Z, Zhang Y, Bi L. [The clinical study on labor pain relief using two kinds of segmental block anesthesia]. Zhonghua Fu Chan Ke Za Zhi 1998; 33:400-2. [PMID: 10806697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
OBJECTIVE To study the pain relief effectiveness of combined subarachnoid peridural segmental block and simple peridural anesthesia, and their influences on the mothers and the infants. METHODS 100 pregnants women were administered combined subarachnoid and peridural segmental block during labor and delivery (study group). 40 pregnant women received simple peridural anesthesia (control group). The degree of labour pain, side effects, labor course, the mode of delivery and the incidences of postpartum hemorrhage, fetal distress and neonatal asphyxia were observed in two groups respectively. RESULTS The pain relief effect in the study group was much better than that of the control group (P < 0.01). There were no significant differences of the mean time of labor course and the mode of delivery between the two groups (P > 0.05). The incidences of postpartum hemorrhage, fetal distress and neonatal asphyxia were similar (P > 0.05). CONCLUSION The analgesic delivery of combined subarachnoid and peridural segmental block is safe and effective, which has no influences on the labour course and the mothers and infants. Its pain relief effectiveness is more positive and satisfactory than that of simple peridural anesthesia. We suggest that it should be performed in the medical units under optimal conditions.
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Affiliation(s)
- Z Zhang
- Qingdao Municipal Mother and Child Health Care Center
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48
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Bi L, Lei X, Zhu J. [High-level expression of human immunodeficiency virus type 1 gp120 protein in E. coli]. Zhonghua Shi Yan He Lin Chuang Bing Du Xue Za Zhi 1998; 12:136-8. [PMID: 12515191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
In order to improve protein expression and to produce good and cheap diagnostic antigen, the gene fragment (560bp) in N-terminal of gp120 of HIV-1 LAV strain was amplified by PCR. After digested by EcoR I and Sal I, the fragment was cloned into a high-level expression vector pET28a. The recombinant plasmid pET/120 transfecting BL21 (DE3) produced the protein with high-level expression in the host cell BL21(DE3), which was further proved having good antigenicity and high specificity by indirect ELISA and Western-blot assay. The protein expressed was about 50% of the total bacterial protein by SDS-PAGE electrophoresis test. It was highly expressed in the prokaryotic expression system.
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Affiliation(s)
- L Bi
- Wuhan Institute of Biological Products, Ministry of Health, Wuhan 430060
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49
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Bi L, Li H, Zhang Y. [Effect of trichosanthin of cell cycle and apoptosis of murine melanoma cells]. Zhongguo Zhong Xi Yi Jie He Za Zhi 1998; 18:35-7. [PMID: 11360572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/16/2023]
Abstract
OBJECTIVE To study the inhibitory effect of purified trichosanthin component on the proliferation of malignant melanoma. METHODS The effect of purified trichosanthin component on the DNA synthesis, cell cycle and cell apoptosis of murine melanoma cells were detected by flowcytometry when cultured in vitro. RESULTS The significant G0/G1 phase arrest was revealed by the increase of cells in G0/G1 phase and decrease of cells in S phase. The obvious apoptosis of melanoma cells was induced by purified trichosanthin component. G0/G1 phase arrest was highly correlated with apoptosis (r = 0.8705). CONCLUSIONS The purified trichosanthin component can markedly inhibit melanoma cells by the suppression of DNA synthesis in S phase and cell mitosis as well as induction of cell apoptosis.
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Affiliation(s)
- L Bi
- Third Teaching Hospital, Norman Bethune University of Medical Sciences, Changchun(130031)
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Wu H, Bi L, Shen P, Li Z, Zhu P. Clinical observation and mechanism study on application of auricular-pressing pill for postoperative analgesia. J TRADIT CHIN MED 1997; 17:26-31. [PMID: 10437240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Affiliation(s)
- H Wu
- Surgical Department, Longhua Hospital Affiliated to Shanghai College of TCM, Shanghai
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