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Wei W, Jing L, Tian Y, Więckowska A, Kang D, Meng B, Panek D, Godyń J, Góral I, Song Y, Liu X, Zhan P. Multifunctional agents against Alzheimer's disease based on oxidative stress: Polysubstituted pyrazine derivatives synthesized by multicomponent reactions. Bioorg Med Chem 2023; 96:117535. [PMID: 37956505 DOI: 10.1016/j.bmc.2023.117535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 11/08/2023] [Accepted: 11/08/2023] [Indexed: 11/15/2023]
Abstract
As Alzheimer's disease (AD) is a neurodegenerative disease with a complex pathogenesis, the exploration of multi-target drugs may be an effective strategy for AD treatment. Multifunctional small molecular agents can be obtained by connecting two or more active drugs or privileged pharmacophores by multicomponent reactions (MCRs). In this paper, two series of polysubstituted pyrazine derivatives with multifunctional moieties were designed as anti-AD agents and synthesized by Passerini-3CR and Ugi-4CR. Since the oxidative stress plays an important role in the pathological process of AD, the antioxidant activities of the newly synthesized compounds were first evaluated. Subsequently, selected active compounds were further screened in a series of AD-related bioassays, including Aβ1-42 self-aggregation and deaggregation, BACE-1 inhibition, metal chelation, and protection of SH-SY5Y cells from H2O2-induced oxidative damage. Compound A3B3C1 represented the best one with multifunctional potencies. Mechanism study showed that A3B3C1 acted on Nrf2/ARE signaling pathway, thus increasing the expression of related antioxidant proteins NQO1 and HO-1 to normal cell level. Furthermore, A3B3C1 showed good in vitro human plasma and liver microsome stability, indicating a potential for further development as multifunctional anti-AD agent.
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Affiliation(s)
- Wenxiu Wei
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, PR China
| | - Lanlan Jing
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, PR China
| | - Ye Tian
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, PR China; Key Laboratory for Experimental Teratology of Ministry of Education, Key Laboratory of Infection and Immunity of Shandong Province, and Department of Immunology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, PR China.
| | - Anna Więckowska
- Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688 Kraków, Poland
| | - Dongwei Kang
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, PR China
| | - Bairu Meng
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, PR China
| | - Dawid Panek
- Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688 Kraków, Poland
| | - Justyna Godyń
- Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688 Kraków, Poland
| | - Izabella Góral
- Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688 Kraków, Poland
| | - Yuning Song
- Department of Clinical Pharmacy, Qilu Hospital of Shandong University, Jinan, Shandong 250012, PR China.
| | - Xinyong Liu
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, PR China.
| | - Peng Zhan
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, PR China.
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Song H, Xia Y, Zhang T, Dun C, Meng B, De Clercq E, Pannecouque C, Kang D, Zhan P, Liu X. 5-Cyano substituted diarylpyridines as potent HIV-1 NNRTIs: Rational design, synthesis, and activity evaluation. Eur J Med Chem 2023; 259:115686. [PMID: 37536208 DOI: 10.1016/j.ejmech.2023.115686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 07/25/2023] [Accepted: 07/25/2023] [Indexed: 08/05/2023]
Abstract
To develop more potent HIV-1 inhibitors against a variety of NNRTIs-resistant strains, a series of 5-cyano substituted diarylpyridines was designed based on the cocrystal structural analysis. Among them, I-5b showed the greatest potency (EC50 = 5.62-171 nM) against the wild-type (WT) and mutant HIV-1 strains. Especially for K103 N, I-5b exhibited outstanding activity with EC50 values of 9.37 nM, being much superior to that of NVP (EC50 = 5128 nM) and EFV (EC50 = 114 nM) and comparable to that of ETR (EC50 = 3.45 nM). In addition, the target of all compounds was turned out to be HIV-1 RT with moderate RT enzyme inhibitory activity (IC50 = 0.094-12.0 μM). Moreover, the binding mode of representative compounds with RT was elaborated via molecular docking.
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Affiliation(s)
- Hao Song
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Culture Road, 250012, Jinan, Shandong, PR China
| | - Yu Xia
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Culture Road, 250012, Jinan, Shandong, PR China
| | - Tao Zhang
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Culture Road, 250012, Jinan, Shandong, PR China
| | - Caiyun Dun
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Culture Road, 250012, Jinan, Shandong, PR China
| | - Bairu Meng
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Culture Road, 250012, Jinan, Shandong, PR China
| | - Erik De Clercq
- Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, K.U. Leuven, Herestraat 49 Postbus 1043 (09.A097), B-3000, Leuven, Belgium
| | - Christophe Pannecouque
- Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, K.U. Leuven, Herestraat 49 Postbus 1043 (09.A097), B-3000, Leuven, Belgium
| | - Dongwei Kang
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Culture Road, 250012, Jinan, Shandong, PR China; China-Belgium Collaborative Research Center for Innovative Antiviral Drugs of Shandong Province, 44 West Culture Road, 250012, Jinan, Shandong, PR China.
| | - Peng Zhan
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Culture Road, 250012, Jinan, Shandong, PR China; China-Belgium Collaborative Research Center for Innovative Antiviral Drugs of Shandong Province, 44 West Culture Road, 250012, Jinan, Shandong, PR China.
| | - Xinyong Liu
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Culture Road, 250012, Jinan, Shandong, PR China; China-Belgium Collaborative Research Center for Innovative Antiviral Drugs of Shandong Province, 44 West Culture Road, 250012, Jinan, Shandong, PR China.
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Jing L, Wei W, Meng B, Chantegreil F, Nachon F, Martínez A, Wu G, Zhao H, Song Y, Kang D, Brazzolotto X, Zhan P, Liu X. Rapid discovery and crystallography study of highly potent and selective butylcholinesterase inhibitors based on oxime-containing libraries and conformational restriction strategies. Bioorg Chem 2023; 134:106465. [PMID: 36933339 DOI: 10.1016/j.bioorg.2023.106465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 02/27/2023] [Accepted: 03/07/2023] [Indexed: 03/16/2023]
Abstract
Butyrylcholinesterase is regarded as a promising drug target in advanced Alzheimer's disease. In order to identify highly selective and potent BuChE inhibitors, a 53-membered compound library was constructed via the oxime-based tethering approach based on microscale synthesis. Although A2Q17 and A3Q12 exhibited higher BuChE selectivity versus acetylcholinesterase, the inhibitory activities were unsatisfactory and A3Q12 did not inhibit Aβ1-42 peptide self-induced aggregation. With A2Q17 and A3Q12 as leads, a novel series of tacrine derivatives with nitrogen-containing heterocycles were designed based on conformation restriction strategy. The results demonstrated that 39 (IC50 = 3.49 nM) and 43 (IC50 = 7.44 nM) yielded much improved hBuChE inhibitory activity compared to the lead A3Q12 (IC50 = 63 nM). Besides, the selectivity indexes (SI = AChE IC50 / BChE IC50) of 39 (SI = 33) and 43 (SI = 20) were also higher than A3Q12 (SI = 14). The results of the kinetic study showed that 39 and 43 exhibited a mixed-type inhibition against eqBuChE with respective Ki values of 1.715 nM and 0.781 nM. And 39 and 43 could inhibit Aβ1-42 peptide self-induced aggregation into fibril. X-ray crystallography structures of 39 or 43 complexes with BuChE revealed the molecular basis for their high potency. Thus, 39 and 43 are deserve for further study to develop potential drug candidates for the treatment of Alzheimer's disease.
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Affiliation(s)
- Lanlan Jing
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong University, 44 West Culture Road, 250012 Ji'nan, Shandong, PR China
| | - Wenxiu Wei
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong University, 44 West Culture Road, 250012 Ji'nan, Shandong, PR China
| | - Bairu Meng
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong University, 44 West Culture Road, 250012 Ji'nan, Shandong, PR China
| | - Fabien Chantegreil
- Département de Toxicologie et Risques Chimiques, Institut de Recherche Biomédicale des Armées, 1 Place du Général Valérie André, 91220, Brétigny-sur-Orge, France
| | - Florian Nachon
- Département de Toxicologie et Risques Chimiques, Institut de Recherche Biomédicale des Armées, 1 Place du Général Valérie André, 91220, Brétigny-sur-Orge, France
| | - Ana Martínez
- Centro de Investigaciones Biológicas Margarita Salas (CSIC), Ramiro de Maeztu 9, 28040 Madrid, Spain
| | - Gaochan Wu
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong University, 44 West Culture Road, 250012 Ji'nan, Shandong, PR China
| | - Huajun Zhao
- Institute of Immunopharmaceutical Sciences, School of Pharmaceutical Sciences, Shandong University, Jinan, Shandong 250012, PR China
| | - Yuning Song
- Department of Clinical Pharmacy, Qilu Hospital of Shandong University, Ji'nan, Shandong, PR China.
| | - Dongwei Kang
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong University, 44 West Culture Road, 250012 Ji'nan, Shandong, PR China.
| | - Xavier Brazzolotto
- Département de Toxicologie et Risques Chimiques, Institut de Recherche Biomédicale des Armées, 1 Place du Général Valérie André, 91220, Brétigny-sur-Orge, France.
| | - Peng Zhan
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong University, 44 West Culture Road, 250012 Ji'nan, Shandong, PR China.
| | - Xinyong Liu
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong University, 44 West Culture Road, 250012 Ji'nan, Shandong, PR China.
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Zhao F, Zhang H, Xie M, Meng B, Liu N, Dun C, Qin Y, Gao S, De Clercq E, Pannecouque C, Tang YJ, Zhan P, Liu X, Kang D. Structure-Based Optimization of 2,4,5-Trisubstituted Pyrimidines as Potent HIV-1 Non-Nucleoside Reverse Transcriptase Inhibitors: Exploiting the Tolerant Regions of the Non-Nucleoside Reverse Transcriptase Inhibitors' Binding Pocket. J Med Chem 2023; 66:2102-2115. [PMID: 36700940 DOI: 10.1021/acs.jmedchem.2c01875] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Although non-nucleoside reverse transcriptase inhibitors (NNRTIs) exhibit potent anti-HIV-1 activity and play an important role in the active antiretroviral therapy of AIDS, the emergence of drug-resistant strains has seriously reduced their clinical efficacy. Here, we report a series of 2,4,5-trisubstituted pyrimidines as potent HIV-1 NNRTIs by exploiting the tolerant regions of the NNRTI binding pocket. Compounds 16b and 16c were demonstrated to have excellent activity (EC50 = 3.14-22.1 nM) against wild-type and a panel of mutant HIV-1 strains, being much superior to that of etravirine (EC50 = 3.53-52.2 nM). Molecular modeling studies were performed to illustrate the detailed interactions between RT and 16b, which shed light on the improvement of the drug resistance profiles. Moreover, 16b possessed favorable pharmacokinetic (T1/2 = 1.33 h, F = 31.8%) and safety profiles (LD50 > 2000 mg/kg), making it a promising anti-HIV-1 drug candidate for further development.
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Affiliation(s)
- Fabao Zhao
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Culture Road, Jinan 250012 Shandong, PR China
| | - Heng Zhang
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Culture Road, Jinan 250012 Shandong, PR China
| | - Minghui Xie
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Culture Road, Jinan 250012 Shandong, PR China
| | - Bairu Meng
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Culture Road, Jinan 250012 Shandong, PR China
| | - Na Liu
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Culture Road, Jinan 250012 Shandong, PR China
| | - Caiyun Dun
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Culture Road, Jinan 250012 Shandong, PR China
| | - Yanyang Qin
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Culture Road, Jinan 250012 Shandong, PR China
| | - Shenghua Gao
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Culture Road, Jinan 250012 Shandong, PR China
| | - Erik De Clercq
- Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, K.U. Leuven, Herestraat 49 Postbus 1043 (09.A097), Leuven B-3000, Belgium
| | - Christophe Pannecouque
- Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, K.U. Leuven, Herestraat 49 Postbus 1043 (09.A097), Leuven B-3000, Belgium
| | - Ya-Jie Tang
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, China
| | - Peng Zhan
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Culture Road, Jinan 250012 Shandong, PR China.,China-Belgium Collaborative Research Center for Innovative Antiviral Drugs of Shandong Province, 44 West Culture Road, Jinan 250012 Shandong, PR China
| | - Xinyong Liu
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Culture Road, Jinan 250012 Shandong, PR China.,China-Belgium Collaborative Research Center for Innovative Antiviral Drugs of Shandong Province, 44 West Culture Road, Jinan 250012 Shandong, PR China
| | - Dongwei Kang
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Culture Road, Jinan 250012 Shandong, PR China.,China-Belgium Collaborative Research Center for Innovative Antiviral Drugs of Shandong Province, 44 West Culture Road, Jinan 250012 Shandong, PR China
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Xiao F, Hu A, Meng B, Zhang Y, Han W, Su J. PVH-Peri5 Pathway for Stress-Coping Oromotor and Anxious Behaviors in Mice. J Dent Res 2023; 102:227-237. [PMID: 36303441 DOI: 10.1177/00220345221130305] [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: 01/24/2023] Open
Abstract
Stressful stimuli can activate the hypothalamic-pituitary-adrenal (HPA) axis. Clinically, it has been widely reported that stressful events are often accompanied by teeth clenching and bruxism, while mastication (chewing) can promote coping with stress. Trigeminal motoneurons in the trigeminal motor nucleus supplying the chewing muscles receive direct inputs from interneurons within the peritrigeminal premotor area (Peri5). Previous studies found that the paraventricular hypothalamic nucleus (PVH) participates in trigeminal activities during stressful events. However, the neural pathway by which the stress-induced oral movements alleviate stress is largely unknown. We hypothesized that paraventricular-trigeminal circuits might be associated with the stress-induced chewing movements and anxiety levels. First, we observed the stress-coping effect of wood gnawing on stress-induced anxiety, with less anxiety-like behaviors seen in the open field test and elevated plus maze, as well as decreased corticosterone and blood glucose levels, in response to stress in mice. We then found that excitotoxic lesions of PVH reduced the effect of gnawing on stress, reflected in more anxiety-like behaviors; this emphasizes the importance of the PVH in stress responses. Anterograde, retrograde, transsynaptic, and nontranssynaptic tracing through central and peripheral injections confirmed monosynaptic projections from PVH to Peri5. We discovered that PVH receives proprioceptive sensory inputs from the jaw muscle and periodontal ligaments, as well as provides motor outputs via the mesencephalic trigeminal nucleus (Me5) and Peri5. Next, pathway-specific functional manipulation by chemogenetic inhibition was conducted to further explore the role of PVH-Peri5 monosynaptic projections. Remarkably, PVH-Peri5 inhibition decreased gnawing but did not necessarily reduce stress-induced anxiety. Moreover, neuropeptide B (NPB) was expressed in Peri5-projecting PVH neurons, indicating that NPB signaling may mediate the effects of PVH-Peri5. In conclusion, our data revealed a PVH-Peri5 circuit that plays a role in the stress response via its associations with oromotor movements and relative anxiety-like behaviors.
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Affiliation(s)
- F Xiao
- Department of Prosthodontics, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - A Hu
- Department of Prosthodontics, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - B Meng
- Department of Pharmacology and Chemical Biology, Emory University School of Medicine, Atlanta, GA, USA.,Department of Neurology, Emory University School of Medicine, Atlanta, GA, USA
| | - Y Zhang
- Department of Prosthodontics, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - W Han
- Nash Family Department of Neuroscience, Icahn School of Medicine at Mount Sinai, New York City, NY, USA
| | - J Su
- Department of Prosthodontics, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
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Zhou Z, Meng B, An J, Zhao F, Sun Y, Zeng D, Wang W, Gao S, Xia Y, Dun C, De Clercq E, Pannecouque C, Zhan P, Kang D, Liu X. Covalently Targeted Highly Conserved Tyr318 to Improve the Drug Resistance Profiles of HIV-1 NNRTIs: A Proof-of-Concept Study. Int J Mol Sci 2023; 24:ijms24021215. [PMID: 36674730 PMCID: PMC9865928 DOI: 10.3390/ijms24021215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 12/15/2022] [Accepted: 01/04/2023] [Indexed: 01/11/2023] Open
Abstract
This study presents proof of concept for designing a novel HIV-1 covalent inhibitor targeting the highly conserved Tyr318 in the HIV-1 non-nucleoside reverse transcriptase inhibitors binding pocket to improve the drug resistance profiles. The target inhibitor ZA-2 with a fluorosulfate warhead in the structure was found to be a potent inhibitor (EC50 = 11-246 nM) against HIV-1 IIIB and a panel of NNRTIs-resistant strains, being far superior to those of NVP and EFV. Moreover, ZA-2 was demonstrated with lower cytotoxicity (CC50 = 125 µM). In the reverse transcriptase inhibitory assay, ZA-2 exhibited an IC50 value of 0.057 µM with the ELISA method, and the MALDI-TOF MS data demonstrated the covalent binding mode of ZA-2 with the enzyme. Additionally, the molecular simulations have also demonstrated that compounds can form covalent binding to the Tyr318.
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Affiliation(s)
- Zhenzhen Zhou
- Key Laboratory of Chemical Biology (Ministry of Education), Department of Medicinal Chemistry, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Culture Road, Jinan 250012, China
| | - Bairu Meng
- Key Laboratory of Chemical Biology (Ministry of Education), Department of Medicinal Chemistry, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Culture Road, Jinan 250012, China
| | - Jiaqi An
- Key Laboratory of Chemical Biology (Ministry of Education), Department of Medicinal Chemistry, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Culture Road, Jinan 250012, China
| | - Fabao Zhao
- Key Laboratory of Chemical Biology (Ministry of Education), Department of Medicinal Chemistry, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Culture Road, Jinan 250012, China
| | - Yanying Sun
- Key Laboratory of Chemical Biology (Ministry of Education), Department of Medicinal Chemistry, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Culture Road, Jinan 250012, China
| | - Dan Zeng
- Key Laboratory of Chemical Biology (Ministry of Education), Department of Medicinal Chemistry, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Culture Road, Jinan 250012, China
| | - Wenna Wang
- Key Laboratory of Chemical Biology (Ministry of Education), Department of Medicinal Chemistry, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Culture Road, Jinan 250012, China
| | - Shenghua Gao
- Key Laboratory of Chemical Biology (Ministry of Education), Department of Medicinal Chemistry, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Culture Road, Jinan 250012, China
| | - Yu Xia
- Key Laboratory of Chemical Biology (Ministry of Education), Department of Medicinal Chemistry, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Culture Road, Jinan 250012, China
| | - Caiyun Dun
- Key Laboratory of Chemical Biology (Ministry of Education), Department of Medicinal Chemistry, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Culture Road, Jinan 250012, China
| | - Erik De Clercq
- Laboratory of Virology and Chemotherapy, Rega Institute for Medical Research, K.U. Leuven, Herestraat 49 Postbus 1043 (09.A097), B-3000 Leuven, Belgium
| | - Christophe Pannecouque
- Laboratory of Virology and Chemotherapy, Rega Institute for Medical Research, K.U. Leuven, Herestraat 49 Postbus 1043 (09.A097), B-3000 Leuven, Belgium
| | - Peng Zhan
- Key Laboratory of Chemical Biology (Ministry of Education), Department of Medicinal Chemistry, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Culture Road, Jinan 250012, China
- China-Belgium Collaborative Research Center for Innovative Antiviral Drugs of Shandong Province, Shandong University, 44 West Culture Road, Jinan 250012, China
| | - Dongwei Kang
- Key Laboratory of Chemical Biology (Ministry of Education), Department of Medicinal Chemistry, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Culture Road, Jinan 250012, China
- China-Belgium Collaborative Research Center for Innovative Antiviral Drugs of Shandong Province, Shandong University, 44 West Culture Road, Jinan 250012, China
- Correspondence: (D.K.); (X.L.)
| | - Xinyong Liu
- Key Laboratory of Chemical Biology (Ministry of Education), Department of Medicinal Chemistry, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Culture Road, Jinan 250012, China
- China-Belgium Collaborative Research Center for Innovative Antiviral Drugs of Shandong Province, Shandong University, 44 West Culture Road, Jinan 250012, China
- Correspondence: (D.K.); (X.L.)
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Meng B, Dohopolski M, Bai T, Jiang S, Cai B, Lin M. Quantifying AI Assisted Auto-Segmentations Performance for a Clinical Online Adaptive Radiotherapy System in Multiple Treatment Sites. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.2280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Gonzalez Y, Meng B, Parsons D, Hrycushko B, Zhuang T, Cai B, Zhang Y, Westover K, Lin M, Iyengar P. Initial Clinical Experience of CBCT-Based Adaptive Online Radiotherapy for SAbR of Thoracic Malignancies. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.2276] [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: 10/31/2022]
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Zhao H, Meng B, Dohopolski M, Choi B, Liang X, Bai T, Nguyen D, Cai B, Lin M, Jiang S. Segmentation of Targets and Organs at Risk for CBCT-Based Online Adaptive Radiotherapy Using Recurrent Neural Networks: A Clinical Evaluation. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.2197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Meng B, Fu QS, Chen XH, Gong GS, Chakrabarti C, Wang YQ, Yuan SL. Effect of Al substitution on the magnetization reversal and complex magnetic properties of NiCr 2O 4 ceramics. Phys Chem Chem Phys 2022; 24:4925-4934. [PMID: 35137749 DOI: 10.1039/d1cp05091e] [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: 11/21/2022]
Abstract
A series of polycrystalline NiCr2-xAlxO4 (0.1 ≤ x ≤ 0.25) spinel ceramics have been synthesized using a sol-gel method. DC magnetization measurements are carried out at different temperatures and magnetic fields. A novel magnetization reversal has been observed in the field cooling process for the x = 0.2 sample, which can be ascribed to the competition between two magnetic sublattices due to their different temperature dependences. The magnetic interaction evolution, related to the complex magnetic properties, is revealed by exchange constants that have been estimated according to ferrimagnetic Curie-Weiss fitting and mean field theory. The fitting result confirmed the evolution of antiferromagnetic and ferromagnetic components with Al substitution, which is supported by the observations from the isothermal magnetization measurements. The positive and negative values of the magnetic moment can be utilized for storage applications based on the results of magnetic switching effect measurements.
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Affiliation(s)
- B Meng
- School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China.
| | - Q S Fu
- School of Mechanics and Photoelectric Physics, Anhui University of Science and Technology, Huainan 232001, People's Republic of China
| | - X H Chen
- School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China.
| | - G S Gong
- School of Physics and Electronic Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, People's Republic of China.,Henan Key Laboratory of Magnetoelectronic Information Functional Materials, Zhengzhou 450002, People's Republic of China
| | - C Chakrabarti
- Microwave Laboratory, Department of Physics, Indian Institution of Technology Madras, Chennai 600036, India
| | - Y Q Wang
- School of Physics and Electronic Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, People's Republic of China.,Henan Key Laboratory of Magnetoelectronic Information Functional Materials, Zhengzhou 450002, People's Republic of China
| | - S L Yuan
- School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China.
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Liu YQ, Gong K, Li XQ, Wen XY, An ZH, Cai C, Chang Z, Chen G, Chen C, Du YY, Gao M, Gao R, Guo DY, He JJ, Hou DJ, Li YG, Li CY, Li G, Li L, Li XF, Li MS, Liang XH, Liu XJ, Lu FJ, Lu H, Meng B, Peng WX, Shi F, Sun XL, Wang H, Wang JZ, Wang YS, Wang HZ, Wen X, Xiao S, Xiong SL, Xu YB, Xu YP, Yang S, Yang JW, Yi QB, Zhang F, Zhang DL, Zhang SN, Zhang CY, Zhang CM, Zhang F, Zhao XY, Zhao Y, Zhou X. The data acquisition algorithm designed for the SiPM-based detectors of GECAM satellite. Radiat Detect Technol Methods 2022. [DOI: 10.1007/s41605-021-00311-3] [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: 11/30/2022]
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Jiang H, Shang X, Zhang C, Yue J, Duan X, Ma Z, Chen C, Zhang W, Pang Q, Zhang W, Liu L, Ren X, Meng B, Zhao G, Zhang P, Wei Y, Ma Y, Zhang L, Li Y. 166TiP Pembrolizumab combined with neoadjuvant chemotherapy versus neoadjuvant chemoradiotherapy followed surgery for locally advanced esophageal squamous cell carcinoma: Protocol for a multi-center, prospective, randomized-controlled, phase III clinical study (Keystone-002). Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.10.185] [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: 10/19/2022] Open
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Shang X, Zhang C, Zhao G, Zhang W, Liu L, Duan X, Yue J, Ma Z, Chen C, Meng B, Ren X, Jiang H. LBA3 Safety and efficacy of pembrolizumab combined with paclitaxel and cisplatin as a neoadjuvant treatment for locally advanced resectable (stage III) esophageal squamous cell carcinoma (Keystone-001): Interim analysis of a prospective, single-arm, single-center, phase II trial. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.10.218] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Meng B, Han F, Gao B, Zhuang H, Zhang XZ, Wang YJ, Zhang M. [Effects of LINC00839 targeting miR-3666 on proliferation, migration and invasion of hepatocellular carcinoma cells]. Zhonghua Zhong Liu Za Zhi 2021; 43:1148-1155. [PMID: 34794216 DOI: 10.3760/cma.j.cn112152-20200222-00116] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the effects of lncRNA LINC00839 on the proliferation, migration and invasion of hepatocellular carcinoma cells and its mechanism. Methods: Real-time quantitative polymerase chain reaction (RT-qPCR) was used to detect the expression of LINC00839 and miR-3666 in hepatocellular carcinoma tissues and adjacent tissues. Pearson correlation was used to analyze the correlation between LINC00839 and miR-3666 expression in liver cancer tissues. Hepatocellular carcinoma cells MHCC97H were cultured in vitro and divided into si-NC group, si-LINC00839 group, miR-NC group, miR-3666 group, si-LINC00839+ anti-miR-NC group, and si-LINC00839+ anti-miR-3666 group. Methylthiazoletrazolium (MTT) method and clone formation experiment were used to detect cell proliferation. Transwell array was used to detect the cell migration and invasion. Western blot was used to detect the protein expressions of p21, E-cadherin and MMP-2. The double luciferase reporter gene experiment was used to verify the regulatory relationship between LINC00839 and miR-3666. Results: Compared with adjacent tissues, the expression level of LINC00839 in hepatocellular carcinoma tissues increased (2.82±0.27 vs. 0.96±0.10, P<0.001), but the expression level of miR-3666 decreased (0.23±0.02 vs. 1.01±0.10, P<0.001). The expression levels of LINC00839 and miR-3666 in liver cancer tissue were negatively correlated (r=-0.658, P<0.001). The survival rate of MHCC97H cells in the si-LINC00839 group [(53.91±5.41)% vs. (100.53±10.22)%], the number of clones formed (92.0±8.0 vs. 164.0±14.3), the number of migration (131.0±12.7 vs. 247.0±22.4), the number of invasion (66.0±6.4 vs. 120.0±11.6) and the protein level of MMP-2 (0.20±0.02 vs. 0.67±0.06) were lower than those in the si-NC group (P<0.001). However, the protein levels of p21 (0.76±0.07 vs. 0.25±0.02) and E-cadherin (0.78±0.08 vs. 0.14±0.01) were higher than those in the si-NC group (P<0.001). LINC00839 targeted and negatively regulated the expression of miR-3666. The survival rate of MHCC97-H cells in the miR-3666 group [(47.93±4.86)% vs. (100.11±10.21)%], the number of clone formation (78.0±7.7 vs. 166.0±15.9), the number of migration (117.0±12.1 vs. 250.0±25.0), the number of invasion (57.0±5.7 vs. 121.0±12.3) and the protein level of MMP-2 (0.16±0.01 vs. 0.69±0.07) were lower than those in the miR-NC group (all P<0.001). However, the protein levels of p21 (0.83±0.08 vs. 0.24±0.02) and E-cadherin (0.87±0.09 vs. 0.13±0.01)were higher than those in the miR-NC group (all P<0.001). The survival rate of MHCC97-H cells in the si-LINC00839+ anti-miR-3666 group [(89.94±9.05)% vs. (54.12±5.39)%], the number of clones (143.0±13.8 vs. 94.0±9.4), the number of migration (208.0±19.8 vs. 129.0±12.6), the number of invasion (108.0±10.1 vs. 65.0±6.4) and the protein level of MMP-2 (0.31±0.03 vs 0.66±0.06) were higher than those in the si-LINC00839+ anti-miR-NC group (P<0.001). However, the protein levels of p21 (0.31±0.03 vs. 0.74±0.07) and E-cadherin (0.28±0.03 vs. 0.80±0.08) were lower than those int the si-LINC00839+ anti-miR-NC group (P<0.001). Conclusion: Inhibition of LINC00839 expression may inhibit the proliferation, migration and invasion of hepatocellular carcinoma cells by targeting up-regulation of miR-3666 expression.
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Affiliation(s)
- B Meng
- Hepatobiliary and Pancreatic Surgery, Cancer Hospital, Zhengzhou University, Zhengzhou 450000, China
| | - F Han
- Hepatobiliary and Pancreatic Surgery, Cancer Hospital, Zhengzhou University, Zhengzhou 450000, China
| | - B Gao
- Hepatobiliary and Pancreatic Surgery, Cancer Hospital, Zhengzhou University, Zhengzhou 450000, China
| | - H Zhuang
- Hepatobiliary and Pancreatic Surgery, Cancer Hospital, Zhengzhou University, Zhengzhou 450000, China
| | - X Z Zhang
- Hepatobiliary and Pancreatic Surgery, Cancer Hospital, Zhengzhou University, Zhengzhou 450000, China
| | - Y J Wang
- Hepatobiliary and Pancreatic Surgery, Cancer Hospital, Zhengzhou University, Zhengzhou 450000, China
| | - M Zhang
- Hepatobiliary and Pancreatic Surgery, Cancer Hospital, Zhengzhou University, Zhengzhou 450000, China
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Li XQ, Wen XY, An ZH, Cai C, Chang Z, Chen G, Chen C, Du YY, Gao M, Gao R, Gong K, Guo DY, He JJ, Hou DJ, Li YG, Li CY, Li G, Li L, Li XF, Li MS, Liang XH, Liu XJ, Liu YQ, Lu FJ, Lu H, Meng B, Peng WX, Shi F, Sun XL, Wang H, Wang JZ, Wang YS, Wang HZ, Wen X, Xiao S, Xiong SL, Xu YB, Xu YP, Yang S, Yang JW, Yi QB, Zhang DL, Zhang F, Zhang SN, Zhang CY, Zhang CM, Zhang F, Zhao XY, Zhao Y, Zhou X, Zhang CS, Yu JP, Chang L, Zhang KK, Huang J, Chen YM, Han XB. The technology for detection of gamma-ray burst with GECAM satellite. Radiat Detect Technol Methods 2021. [DOI: 10.1007/s41605-021-00288-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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16
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Meng B, Sheng M, Qu XP, Wang SX, Zhang H. [A case of bicuspid aortic valve malformation combined with Turner syndrome]. Zhonghua Xin Xue Guan Bing Za Zhi 2021; 49:818-821. [PMID: 34404194 DOI: 10.3760/cma.j.cn112148-20210707-00576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- B Meng
- Department of Cardiac Surgery, Children's Hospital Affiliated to the Capital Institute of Paediatrics, Beijing 100020, China
| | - M Sheng
- Department of Cardiac Surgery, Children's Hospital Affiliated to the Capital Institute of Paediatrics, Beijing 100020, China
| | - X P Qu
- Department of Cardiac Surgery, Children's Hospital Affiliated to the Capital Institute of Paediatrics, Beijing 100020, China
| | - S X Wang
- Department of Cardiac Surgery, Children's Hospital Affiliated to the Capital Institute of Paediatrics, Beijing 100020, China
| | - H Zhang
- Department of Cardiac Surgery, Children's Hospital Affiliated to the Capital Institute of Paediatrics, Beijing 100020, China
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Yang X, Chen S, Qi Y, Xu XY, Guan X, Yang YC, Liu YX, Guo YH, Gong WC, Gao YN, Wang XH, Li W, Li LF, Fu K, Zhang HL, Meng B. [Research of prognostic immunophenotypes in 163 patients of diffuse large B-cell lymphoma]. Zhonghua Xue Ye Xue Za Zhi 2021; 42:487-494. [PMID: 34384155 PMCID: PMC8295611 DOI: 10.3760/cma.j.issn.0253-2727.2021.06.008] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
目的 筛选并分析与弥漫大B细胞淋巴瘤(DLBCL)预后相关的免疫表型,探究其预后价值。 方法 选取天津医科大学肿瘤医院2011年1月至2016年12月收治的163例DLBCL患者,免疫组织化学染色检测DLBCL常见免疫表型,COX模型探索独立于国际预后指数(IPI)影响总生存(OS)与无进展生存(PFS)的免疫表型,并分析其两两联合表达对预后的影响。 结果 多因素分析显示BCL6阴性(PFS:HR=1.652,95% CI 1.030~2.649,P=0.037)、P53阳性(OS:HR=1.842,95% CI 1.008~3.367,P=0.047)、BCL2强阳性(OS:HR=2.102,95%CI 1.249~3.537,P=0.005;PFS:HR=2.126,95% CI 1.312~3.443,P=0.002)是DLBCL中独立于IPI的预后不良因素。亚组分析显示,在年龄≤60岁组患者中BCL6阴性(PFS:HR=2.042,95%CI 1.021~4.081,P=0.043)、P53阳性(OS:HR=3.069,95% CI 1.244~7.569,P=0.015)和BCL2强阳性(OS:HR=2.433,95% CI 1.165~5.082,P=0.018;PFS:HR=3.209,95%CI 1.606~6.410,P=0.001)对预后影响显著;在IPI 0~2分亚组患者中,BCL6阴性(OS:HR=2.467,95%CI 1.322~4.604,P=0.005;PFS:HR=2.248,95%CI 1.275~3.965,P=0.005)和BCL2强阳性(PFS:HR=2.045,95%CI 1.119~3.735,P=0.020)对预后影响显著。BCL6和BCL2强阳性的联合表达与DLBCL的预后相关(P=0.005和P<0.001),BCL6阳性/BCL2非强阳性(86例)预后最好[3年OS率(71.6±4.9)%,3年PFS率(67.0±5.1)%],BCL6阴性/BCL2强阳性(10例)预后最差[3年OS率(20.0±12.6)%,3年PFS率(10.0±9.5)%];BCL6、P53的联合表达与DLBCL的预后差异无统计学意义(P=0.061和P=0.089),但生存曲线显示BCL6阳性/P53阴性的病例(98例)预后较好[3年OS率(70.6±4.7)%,3年PFS率(64.6±4.9)%];BCL2强阳性、P53的联合表达与DLBCL的预后显著相关(P<0.001和P<0.001),BCL2强阳性/P53阳性的病例(5例)预后最差(3年OS率和PFS率均为0);无论BCL6与P53表达如何,BCL2强阳性的病例预后均比非强阳性病例差。 结论 BCL6阴性、P53阳性、BCL2强阳性三种免疫表型单独及联合表达对DLBCL尤其是年龄≤60岁和IPI 0~2分患者的预后预测具有一定价值。
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Affiliation(s)
- X Yang
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin; Tianjin's Clinical Research Center of Cancer, Tianjin 300060, China Department of Pathology, Tianjin Medical University Cancer Institute andHospital, Tianjin 300060, China
| | - S Chen
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin; Tianjin's Clinical Research Center of Cancer, Tianjin 300060, China Department of Pathology, Tianjin Medical University Cancer Institute andHospital, Tianjin 300060, China
| | - Y Qi
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin; Tianjin's Clinical Research Center of Cancer, Tianjin 300060, China Department of Pathology, Tianjin Medical University Cancer Institute andHospital, Tianjin 300060, China
| | - X Y Xu
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin; Tianjin's Clinical Research Center of Cancer, Tianjin 300060, China Department of Pathology, Tianjin Medical University Cancer Institute andHospital, Tianjin 300060, China
| | - X Guan
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin; Tianjin's Clinical Research Center of Cancer, Tianjin 300060, China Department of Pathology, Tianjin Medical University Cancer Institute andHospital, Tianjin 300060, China
| | - Y C Yang
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin; Tianjin's Clinical Research Center of Cancer, Tianjin 300060, China Department of Pathology, Tianjin Medical University Cancer Institute andHospital, Tianjin 300060, China
| | - Y X Liu
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin; Tianjin's Clinical Research Center of Cancer, Tianjin 300060, China Department of Pathology, Tianjin Medical University Cancer Institute andHospital, Tianjin 300060, China
| | - Y H Guo
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin; Tianjin's Clinical Research Center of Cancer, Tianjin 300060, China Department of Pathology, Tianjin Medical University Cancer Institute andHospital, Tianjin 300060, China
| | - W C Gong
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin; Tianjin's Clinical Research Center of Cancer, Tianjin 300060, China Department of Pathology, Tianjin Medical University Cancer Institute andHospital, Tianjin 300060, China
| | - Y N Gao
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin; Tianjin's Clinical Research Center of Cancer, Tianjin 300060, China Department of Pathology, Tianjin Medical University Cancer Institute andHospital, Tianjin 300060, China
| | - X H Wang
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin; Tianjin's Clinical Research Center of Cancer, Tianjin 300060, China Department of Lymphoma, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, China
| | - W Li
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin; Tianjin's Clinical Research Center of Cancer, Tianjin 300060, China Department of Lymphoma, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, China
| | - L F Li
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin; Tianjin's Clinical Research Center of Cancer, Tianjin 300060, China Department of Lymphoma, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, China
| | - K Fu
- Department of Pathology, Roswell Park Cancer Institute, Buffalo, New York, USA
| | - H L Zhang
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin; Tianjin's Clinical Research Center of Cancer, Tianjin 300060, China Department of Lymphoma, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, China
| | - B Meng
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin; Tianjin's Clinical Research Center of Cancer, Tianjin 300060, China Department of Pathology, Tianjin Medical University Cancer Institute andHospital, Tianjin 300060, China
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Guan X, Yang YC, Qi Y, Gong WC, Xu XY, Wang YL, Guo YH, Luo Y, Sun L, Fu K, Meng B. [Clinicopathological features of intravascular peripheral T-cell lymphoma]. Zhonghua Xue Ye Xue Za Zhi 2021; 42:583-590. [PMID: 34455746 PMCID: PMC8408497 DOI: 10.3760/cma.j.issn.0253-2727.2021.07.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Indexed: 11/24/2022]
Abstract
Objective: To summarize the clinical and pathological features of intravascular NK and T cell lymphoma for better understanding of such disease to reduce misdiagnosis and miss-diagnosis. Methods: Clinical and pathological features were analyzed retrospectively in one case of intravascular peripheral T-cell lymphoma, not otherwise specified (IVPTCL, NOS) , with literatures review. Results: The case presented in this study was a 66-year-old man. PET/CT scan showed multiple lymph nodes enlargement throughout the body. Normal lymph node structure could not be observed by tissue biopsy, while lymph follicles were partially disrupted. High-power light microscope revealed a large number of blood vessels with diffuse proliferation and dilation, where atypical lymphoid cell mass was restricted in the lumen and partially infiltrated the large blood vessel wall. These tumor cells were medium to large with moderate cytoplasm. The nucleus was irregular, single or multiple nucleoli could be seen, chromatin was condensed, some were empty and bright, and mitotic figures could be seen. Immunohistochemical staining showed that the neoplastic cells were positive for expression of CD3, CD43, CD8, GrB, TIA-1 and perforin. EBER in situ hybridization result was negative. Polymerase chain reaction test identified a clonal gene rearrangement of T-cell receptor γ. The patient was treated with CHOP in combination with chidamide, but died of infection and cardiopulmonary failure within 2 months. 56 cases of intravascular NK/T cell lymphoma with definite classification were collected from relevant literatures, including 47 cases with nasal type of extranodal NK/T cell lymphoma (27 were male and 20 were female) , 8 cases with anaplastic large cell lymphoma (3 males and 5 females) , and only one case with de nova IVPTCL, NOS in brain. We report the second case of IVPTCL,NOS, and notably originated from lymph node for the first time. Conclusions: Intravascular NK/T cell lymphoma is a highly aggressive disease with no effective treatment at present. Involvement of Lymph node has rarely been reported, and further studies on more cases are necessary.
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Affiliation(s)
- X Guan
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060; Tianjin's Clinical Research Center of Cancer, Tianjin 300060, China Department of Pathology, Tianjin Medical University Cancer Institute and Hospital Tianjin 300060, China
| | - Y C Yang
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060; Tianjin's Clinical Research Center of Cancer, Tianjin 300060, China Department of Pathology, Tianjin Medical University Cancer Institute and Hospital Tianjin 300060, China
| | - Y Qi
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060; Tianjin's Clinical Research Center of Cancer, Tianjin 300060, China Department of Pathology, Tianjin Medical University Cancer Institute and Hospital Tianjin 300060, China
| | - W C Gong
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060; Tianjin's Clinical Research Center of Cancer, Tianjin 300060, China Department of Pathology, Tianjin Medical University Cancer Institute and Hospital Tianjin 300060, China
| | - X Y Xu
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060; Tianjin's Clinical Research Center of Cancer, Tianjin 300060, China Department of Pathology, Tianjin Medical University Cancer Institute and Hospital Tianjin 300060, China
| | - Y L Wang
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060; Tianjin's Clinical Research Center of Cancer, Tianjin 300060, China Department of Pathology, Tianjin Medical University Cancer Institute and Hospital Tianjin 300060, China
| | - Y H Guo
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060; Tianjin's Clinical Research Center of Cancer, Tianjin 300060, China Department of Pathology, Tianjin Medical University Cancer Institute and Hospital Tianjin 300060, China
| | - Y Luo
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060; Tianjin's Clinical Research Center of Cancer, Tianjin 300060, China Department of Pathology, Tianjin Medical University Cancer Institute and Hospital Tianjin 300060, China
| | - L Sun
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060; Tianjin's Clinical Research Center of Cancer, Tianjin 300060, China Department of Pathology, Tianjin Medical University Cancer Institute and Hospital Tianjin 300060, China
| | - K Fu
- Department of Pathology, Roswell Park Cancer Institute, Buffalo, New York
| | - B Meng
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060; Tianjin's Clinical Research Center of Cancer, Tianjin 300060, China Department of Pathology, Tianjin Medical University Cancer Institute and Hospital Tianjin 300060, China
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Byrd BK, Wirth DJ, Meng B, Strawbridge RS, Davis SC. A hyperspectral approach for recovering agent excretion biodistributions using whole-body fluorescence cryo-imaging. Proc SPIE Int Soc Opt Eng 2021; 11625. [PMID: 34177040 DOI: 10.1117/12.2582534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Understanding the uptake and clearance kinetics of new drugs and contrast agents is an important aspect of drug development that typically involves a combination of imaging and analysis of harvested organs. Although these techniques are well-established and can be quantitative, they generally do not preserve high resolution biodistribution information. In this context, fluorescence whole-body cryo-imaging is a promising technique for recovering 3D drug/agent biodistributions at a high resolution throughout an entire study animal at specific time points. A common challenge associated with fluorescence imaging in tissue is that agent signal can be confounded by endogenous fluorescence signal which is often observed in the visible window. One method to address this issue is to acquire hyperspectral images and spectrally unmix agent signal from confounding autofluorescence signals using known spectral bases. Herein, we apply hyperspectral whole-body cryo-imaging and spectral unmixing to examine the distribution of multiple fluorescent agents in excretion organ regions.
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Affiliation(s)
- B K Byrd
- Thayer School of Engineering at Dartmouth College, 14 Engineering Dr. Hanover, NH, 03755
| | - D J Wirth
- Thayer School of Engineering at Dartmouth College, 14 Engineering Dr. Hanover, NH, 03755
| | - B Meng
- Thayer School of Engineering at Dartmouth College, 14 Engineering Dr. Hanover, NH, 03755
| | - R S Strawbridge
- Thayer School of Engineering at Dartmouth College, 14 Engineering Dr. Hanover, NH, 03755
| | - S C Davis
- Thayer School of Engineering at Dartmouth College, 14 Engineering Dr. Hanover, NH, 03755
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Wu J, Sun W, Yang X, Wang H, Liu X, Chi K, Zhou L, Huang X, Zhao S, Ding T, Meng B, Lin D. FP07.03 Landscape Heterogeneity of PD-L1 Expression and Immune Cells Predicts Prognosis of Metastatic Non-Small Cell Lung Cancer. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.103] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Meng B, Li B, Zhao ZH, Wang JT, Zhang H. Risk of acute kidney injury in myocardial infarction: new update. J BIOL REG HOMEOS AG 2020; 34:2251-2253. [PMID: 33210499 DOI: 10.23812/20-152-l] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Affiliation(s)
- B Meng
- Department of Cardiology, Zibo Central Hospital, Zibo, P.R. China
| | - B Li
- Department of Cardiology, Zibo Central Hospital, Zibo, P.R. China
| | - Z H Zhao
- Department of Cardiology, Zibo Central Hospital, Zibo, P.R. China
| | - J T Wang
- Department of Cardiology, Zibo Central Hospital, Zibo, P.R. China
| | - H Zhang
- Department of Cardiology, Zibo Central Hospital, Zibo, P.R. China
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Lu B, Liu RJ, Meng B, Yuan H, Zhai XJ, Li XY, Qin JL, Zheng JW, Wu GR, Chen JP. [Effect of fragmented sleep on postoperative cognitive function and central neuroinflammation]. Zhonghua Yi Xue Za Zhi 2020; 100:1341-1344. [PMID: 32375444 DOI: 10.3760/cma.j.cn112137-20191215-02734] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the effect of sleep fragmentation on perioperative neurocognitive disorders (PND) and central neuroinflammation by simulating sleep patterns of postoperative patients with sleep fragmentation in aged mice. Methods: Thirty-two elderly ICR mice were randomly divided into four groups (n=8): normal group (C), surgery group (S), fragmented sleep group (F), and surgery+fragmented sleep group (D). Fragmented sleep was conducted after internal fixation of tibia fractures, cognitive function was evaluated by novel object recognition (NOR) and fear conditioning (FC) test, and changes in expression of inflammatory cytokines in hippocampus were detected by ELISA. Results: NOR test: the recognition index (RI) of mice in group C, group S, group F and group D was 0.69±0.07, 0.48±0.07, 0.54±0.10 and 0.50±0.12, respectively. The RI of mice in group S, group F and group D was significantly lower than that in group C (t=4.885, 3.521 and 4.433, all P<0.01). There was no significant difference in RI between group S and group D (t=0.967 1, P>0.05). Contextual FC test: the freezing time of mice in group C, group S, group F and group D was(21.34±6.48), (13.83±4.26), (11.50±6.25) and (6.17±4.77) s, respectively. The freezing time of mice in group S, group F and group D was significantly lower than that in group C (t=2.722, 3.566, 5.496, P<0.05 or P<0.01). The freezing time of mice in group D was significantly lower than that in group S (t=2.774, P<0.05). Cue FC test: the freezing time of mice in group C, group S, group F and group D was (74.36±17.09), (43.91±9.71), (46.34±13.43) and (24.90±14.21) s, respectively. The freezing time of mice in group S, group F and group D was significantly lower than that in group C (t=4.393, 4.043 and 7.136, all P<0.01). The freezing time of mice in group D was significantly lower than that in group S (t=2.743, P<0.05). The levels of TNF-α, IL-6 and IL-1β in hippocampus of mice in group S, F and D were significantly higher than those in group C, while the levels of TNF-α and IL-6 in hippocampus of mice in group D were significantly higher than those in group S, with statistically significant differences (P<0.05 or P<0.01). Conclusion: Postoperative fragmented sleep aggravates postoperative cognitive impairment and increases the hippocampal neuroinflammation in aged mice.
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Affiliation(s)
- B Lu
- Department of Anesthesiology, Hwa Mei Hospital, University of Chinese Academy of Sciences, Ningbo 315010, China
| | - R J Liu
- Department of Anesthesiology, Hwa Mei Hospital, University of Chinese Academy of Sciences, Ningbo 315010, China
| | - B Meng
- Department of Anesthesiology, Hwa Mei Hospital, University of Chinese Academy of Sciences, Ningbo 315010, China
| | - H Yuan
- Department of Anesthesiology, Hwa Mei Hospital, University of Chinese Academy of Sciences, Ningbo 315010, China
| | - X J Zhai
- Department of Anesthesiology, Hwa Mei Hospital, University of Chinese Academy of Sciences, Ningbo 315010, China
| | - X Y Li
- Department of Anesthesiology, Hwa Mei Hospital, University of Chinese Academy of Sciences, Ningbo 315010, China
| | - J L Qin
- Department of Anesthesiology, Hwa Mei Hospital, University of Chinese Academy of Sciences, Ningbo 315010, China
| | - J W Zheng
- Department of Anesthesiology, Hwa Mei Hospital, University of Chinese Academy of Sciences, Ningbo 315010, China
| | - G R Wu
- Department of Anesthesiology, Hwa Mei Hospital, University of Chinese Academy of Sciences, Ningbo 315010, China
| | - J P Chen
- Department of Anesthesiology, Hwa Mei Hospital, University of Chinese Academy of Sciences, Ningbo 315010, China
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Huang P, Chen S, Yang X, Lei YY, Xu XY, Liu YX, Guo YH, Pan Y, Wang XH, Zhang HL, Fu K, Meng B. [Prognostic evaluation of P53 and BCL2 proteins in MYC/BCL2 double expression DLBCL]. Zhonghua Xue Ye Xue Za Zhi 2020; 40:589-593. [PMID: 32397023 PMCID: PMC7364905 DOI: 10.3760/cma.j.issn.0253-2727.2019.07.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the strong expression (S+) of P53 and BCL2 proteins in MYC/BCL2 double-expression DLBCL (DEL) and whether they can be used for the prognostic evaluation and stratified diagnosis of DELs. Methods: Tissue microarray were made by filed FFPE blocks of 174 DLBCL cases. The translocation of MYC, BCL2 and BCL6 genes were detected by FISH, and the proteins were detected by IHC. Data of clinicopathologic features and follow up of patients were collected and OS (overall survival) and PFS (progression free survival) were analyzed by statistics. Results: Eight double-hit lymphomas (DHLs) were identified in all cases, and 45 DELs were selected from 166 remaining cases, which have no significant difference in OS and PFS compared with non-DEL cases (P=0.668 and P=0.790) . Of 42 DEL-cases with follow up data, 24 cases with P53+ or/and BCL2 (S+) are significantly shorter OS and PFS than others (P=0.003 and P=0.000) , in which the cases with P53+/BCL2 (S+) co-expression were the worst prognosis, and P53/BCL2 co-weaker positive DEL cases even have superior OS and PFS than those non-DELs. Although statistics showed that the cases of P53+ or/and BCL2 (S+) have a lower OS and PFS in total cases (P=0.063 and P=0.024) , it is not the case when the DEL-cases take out from total cases, that is the cases with P53+ or/and BCL2 (S+) are as similar OS and PFS as others in non-DEL group (P=0.590 and P=0.550) . Conclusion: The strong expression of P53 and BCL2 proteins can be used as indicators of stratified diagnosis and poor prognosis of DEL.
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Affiliation(s)
- P Huang
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin; Tianjin's Clinical Research Center of Cancer, Tianjin 300060, China; Department of Pathology, Tianjin Medical University Cancer Institute and Hospital Tianjin 300060, China
| | - S Chen
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin; Tianjin's Clinical Research Center of Cancer, Tianjin 300060, China; Department of Pathology, Tianjin Medical University Cancer Institute and Hospital Tianjin 300060, China
| | - X Yang
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin; Tianjin's Clinical Research Center of Cancer, Tianjin 300060, China; Department of Pathology, Tianjin Medical University Cancer Institute and Hospital Tianjin 300060, China
| | - Y Y Lei
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin; Tianjin's Clinical Research Center of Cancer, Tianjin 300060, China; Department of Pathology, Tianjin Medical University Cancer Institute and Hospital Tianjin 300060, China
| | - X Y Xu
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin; Tianjin's Clinical Research Center of Cancer, Tianjin 300060, China; Department of Pathology, Tianjin Medical University Cancer Institute and Hospital Tianjin 300060, China
| | - Y X Liu
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin; Tianjin's Clinical Research Center of Cancer, Tianjin 300060, China; Department of Pathology, Tianjin Medical University Cancer Institute and Hospital Tianjin 300060, China
| | - Y H Guo
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin; Tianjin's Clinical Research Center of Cancer, Tianjin 300060, China; Department of Pathology, Tianjin Medical University Cancer Institute and Hospital Tianjin 300060, China
| | - Y Pan
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin; Tianjin's Clinical Research Center of Cancer, Tianjin 300060, China; Department of Pathology, Tianjin Medical University Cancer Institute and Hospital Tianjin 300060, China
| | - X H Wang
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin; Tianjin's Clinical Research Center of Cancer, Tianjin 300060, China; Department of Lymphoma, Tianjin Medical University Cancer Institute and Hospital Tianjin 300060, China
| | - H L Zhang
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin; Tianjin's Clinical Research Center of Cancer, Tianjin 300060, China; Department of Lymphoma, Tianjin Medical University Cancer Institute and Hospital Tianjin 300060, China
| | - K Fu
- Department of Pathology and Microbiology, UNMC, Omaha, USA
| | - B Meng
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin; Tianjin's Clinical Research Center of Cancer, Tianjin 300060, China; Department of Pathology, Tianjin Medical University Cancer Institute and Hospital Tianjin 300060, China
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Fu QS, Chen XH, Chakrabarti C, Li CL, Zheng J, Wang PJ, Yin HX, Qiu Y, Meng B, Yuan SL. Negative magnetization, complex magnetic ordering and applications of Cr-doped Co 2TiO 4. Phys Chem Chem Phys 2020; 22:7058-7064. [PMID: 32196030 DOI: 10.1039/c9cp06444c] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polycrystalline Co2Ti1-xCrxO4 (0 ≤ x ≤ 0.2) inverse spinel ceramics have been synthesized via a sol-gel technique. The dc magnetization measurement in the field-cooled mode shows that negative magnetization could be observed until x reaches 0.2. The exchange constants are calculated using the ferrimagnetic Curie-Weiss fitting and the mean-field theory. This reveals that the strength of the inter sublattice magnetic interaction presents a non-monotonic trend with the increase in Cr content and reaches the minimum at x = 0.1, giving rise to the highest compensation temperature in the x = 0.1 sample. The applicability of the x = 0.1 sample is investigated in light of two prominent magnetic effects: (i) the stable magnetic switching effect indicates the potential applications in magnetic switching and data storage and (ii) the coexistence of normal and inverse magnetocaloric effects suggests a potential application in a constant temperature bath at 54 K.
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Affiliation(s)
- Q S Fu
- School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China.
| | - X H Chen
- School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China.
| | - C Chakrabarti
- School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China.
| | - C L Li
- School of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, People's Republic of China
| | - J Zheng
- School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China.
| | - P J Wang
- School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China.
| | - H X Yin
- School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China.
| | - Y Qiu
- School of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, People's Republic of China
| | - B Meng
- School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China.
| | - S L Yuan
- School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China.
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Byrd BK, Wirth DJ, Meng B, Strawbridge RS, Davis SC. Evaluating uptake of multiple fluorescent contrast agents in brain tumors simultaneously using whole animal multi-spectral cryo-imaging. Proc SPIE Int Soc Opt Eng 2020; 11219. [PMID: 34744247 DOI: 10.1117/12.2543921] [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: 11/14/2022]
Abstract
MRI images of gadolinium-based contrast agents (GBCA's) acquired before surgery are often registered to patients and used to guide surgical resection of intracranial tumors. Yet, the accuracy of these MR images in describing the surgical field degrades as surgery progresses; a well-recognized problem which has prompted efforts to develop new techniques that provide updated guidance information on residual tumor location. These efforts span a wide array of technologies, including image updating with deformation models, intraoperative MRI, and fluorescence guided surgery, among others. However, introduction of a straightforward technique that provides surgeons with a current view of GBCA distribution in real time remains an important goal. In this context, development of a fluorescent agent that recapitulates the kinetic behavior of GBCA's could provide familiar information directly in the surgical field in real time. To advance this strategy, we have begun identifying fluorescent contrast agents that show similar kinetic behavior to GBCA's. Using a novel hyperspectral whole body cryo-imaging system, we acquired high-resolution 3-D volumes of the distribution of multiple candidate fluorophores in whole heads bearing orthotopic brain tumors. Preliminary results reveal significant differences in the distribution of candidate optical agents, some of which show strong similarity to the GBCA uptake. Identification and eventual translation of a reliable GBCA-optical analog could improve and simplify surgical resection of brain tumors.
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Affiliation(s)
- B K Byrd
- Thayer School of Engineering at Dartmouth College, 14 Engineering Dr. Hanover, NH, 03755
| | - D J Wirth
- Thayer School of Engineering at Dartmouth College, 14 Engineering Dr. Hanover, NH, 03755
| | - B Meng
- Thayer School of Engineering at Dartmouth College, 14 Engineering Dr. Hanover, NH, 03755
| | - R S Strawbridge
- Thayer School of Engineering at Dartmouth College, 14 Engineering Dr. Hanover, NH, 03755
| | - S C Davis
- Thayer School of Engineering at Dartmouth College, 14 Engineering Dr. Hanover, NH, 03755
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Meng B, Zhai XJ, Qin JL, Li XY, Lu B, Zheng JW, Chen JP. [Modified memory sub-test of Syndrom Kurz test in middle-aged and elderly Chinese]. Zhonghua Yi Xue Za Zhi 2019; 99:2047-2051. [PMID: 31315375 DOI: 10.3760/cma.j.issn.0376-2491.2019.26.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the applicability of the modified memory sub-test of syndrom kurz test (SKT-M) in middle-aged and elderly Chinese. Methods: Between March 1, 2017, and October 31, 2017, at HwaMei Hospital, 132 patients receiving elective great saphenous vein high ligation and stripping operation and 96 their accompanying dependents, 55-75 years old, were randomly divided into the SKT-M group (n=121) and auditory verbal learning test -huashan version (AVLT-H) group (n=107) using random numeral method. The two groups underwent two corresponding neuropsychological tests respectively on the day before surgery and the second day after surgery. Results: There was no significant difference in the baseline characteristics and all the neuropsychological indices at the two time points between patients and dependents (P>0.05). As a consequence, the data of the patients and dependents were integrated to compare the applicability of SKT-M and AVLT-H. The "low-score" ratio of SKT-M immediate recall (2.4%) was lower than that of AVLT-H test (12.1%) (χ(2)=8.138, P<0.01). Besides, the "low-score" ratio of SKT-M delayed recall (5.7%) was also lower than that of AVLT-H test (20.5%) (χ(2)=11.167, P<0.01). The influence factors of SKT-M were less than that of AVLT-H test. However, the learning effect of SKT-M immediate recall was more significant, for its first testing sore (23.1±5.4) was significantly higher than the second one (21.9±5.1) (t=-3.971, P<0.001). Conclusion: The SKT-M has better applicability to 55-75 years old Chinese than AVLT-H test, but its learning effect should be noted.
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Affiliation(s)
- B Meng
- Department of Anesthesiology, HwaMei Hospital, University of Chinese Academy of Sciences, Ningbo 315010, China
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Liu CX, Meng B, Li YB, Bai H, Wu ZX. A rare case of thoracic spinal intradural extramedullary enterogenous cyst with acute onset: case report and literature review. Ann R Coll Surg Engl 2019; 101:e142-e146. [PMID: 31155903 DOI: 10.1308/rcsann.2019.0066] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
The intraspinal enterogenous cyst, also called an neurenteric cyst, is a rare congenital disease. It was reported to be local to the C1 to L2 spinal segments, with the majority located in the cervicothoracic region. Most patients present with symptoms of progressive focal pain, myelopathic signs or radicular symptoms. We report a rare case of thoracic spinal intradural extramedullary enterogenous cyst with rapidly progressive weakness of both lower extremities. Additionally, we analysed the literature concerning the clinical features, diagnosis and prognosis of this disease.
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Affiliation(s)
- C X Liu
- Institute of Orthopaedics, Xijing Hospital, Fourth Military Medical University , Xi'an, Shaanxi Province , China
| | - B Meng
- Institute of Orthopaedics, Xijing Hospital, Fourth Military Medical University , Xi'an, Shaanxi Province , China
| | - Y B Li
- Institute of Orthopaedics, Xijing Hospital, Fourth Military Medical University , Xi'an, Shaanxi Province , China
| | - H Bai
- Institute of Orthopaedics, Xijing Hospital, Fourth Military Medical University , Xi'an, Shaanxi Province , China
| | - Z X Wu
- Institute of Orthopaedics, Xijing Hospital, Fourth Military Medical University , Xi'an, Shaanxi Province , China
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Wang X, Zhang T, Meng B, Zhai Q, Ren X, Li L, Wang P, Zhang H. A2aR AS ONE OF NOVEL IMMUNE CHECKPOINTS, AND TUMOR-INFILTRATING LYMPHOCYTES IN DIFFUSE LARGE B-CELL LYMPHOMA. Hematol Oncol 2019. [DOI: 10.1002/hon.19_2631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- X. Wang
- Department of Lymphoma; Tianjin Medical University Cancer Institute and Hospital; Tianjin China
| | - T. Zhang
- Department of Lymphoma; Tianjin Medical University Cancer Institute and Hospital; Tianjin China
| | - B. Meng
- Department of Pathology; Tianjin Medical University Cancer Institute and Hospital; Tianjin China
| | - Q. Zhai
- Department of Pathology; Tianjin Medical University Cancer Institute and Hospital; Tianjin China
| | - X. Ren
- Department of Immunology/Biotherapy; Tianjin Medical University Cancer Institute and Hospital; Tianjin China
| | - L. Li
- Department of Lymphoma; Tianjin Medical University Cancer Institute and Hospital; Tianjin China
| | - P. Wang
- Department of Radiation Oncology; Tianjin Medical University Cancer Institute and Hospital; Tianjin China
| | - H. Zhang
- Department of Lymphoma; Tianjin Medical University Cancer Institute and Hospital; Tianjin China
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Chen CR, Zheng JW, Meng B, Lu B, Zhai XJ. [Comparison of effects of two anesthesia methods on the first night sleep quality in middle-aged and elderly patients undergoing surgery for lower extremity varicose vein]. Zhonghua Yi Xue Za Zhi 2018; 98:3773-3777. [PMID: 30541220 DOI: 10.3760/cma.j.issn.0376-2491.2018.46.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate effects of two anesthesia methods on the first night sleep quality in middle-aged and elderly patients after surgery. Methods: This was a prospective study conducted from November 2017 to March 2018. Sixty patients, aged 50-70, undergoing elective surgery for unilateral lower extremity varicose vein at Ningbo No.2 Hospital, with American Society of Anesthesiologists (ASA) grade Ⅰ or Ⅱ, were enrolled and randomly allocated to two groups (n=30), general anesthesia group and spinal anesthesia group. On the first day before surgery, the patient's general data were collected and the Pittsburgh sleep quality index (PSQI) was used to assess the patient's sleep status in the past month. The postoperative mean arterial pressure (MAP), heart rate (HR) and pulse oxygen saturation (SpO(2)) in the ward were recorded with a multi-function monitor on first night after surgery. The total sleep time and arousal time were obtained by bispectral index (BIS) monitoring from 20: 00 (the first day) to 6: 00 (the second day). Athens Insomnia Scale (AIS) was recorded at 18: 00 at the second day after surgery. Results: There was no significant difference in general data and PSQI scale scores between the two groups of patients (all P>0.05). And there were no significant differences in MAP, HR, SpO(2) and BIS every 2 hours between the two groups from 20: 00 (the first day) to 6: 00 (the second day)(all P>0.05). Compared with the general anesthesia group, the first night of total sleep time in the spinal anesthesia group was significantly shorter[(357.2±83.4)min vs (275.1±64.8)min, t=-9.635, P<0.05], while the rate of wakefulness, total sleep time, overall sleep quality, daytime mood and daytime physical function were significantly higher[(25.9%, 22.2%, 25.9%, 18.5%18.5%) vs (51.7%, 51.7%, 55.2%, 48.3%44.8%), χ(2)=3.901, 5.192, 4.941, 5.523 and 4.437, all P<0.05], and the cases of postoperative urinary retention and lower limb discomfort were significantly higher[(8 and 6) vs (1 and 0), all P<0.05]. Conclusion: Both anesthesia methods can be safely and effectively applied to middle-aged and elderly patients with lower extremity varicose veins surgery, but patients with general anesthesia show fewer adverse reactions on the first night after surgery and have better sleep quality.
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Affiliation(s)
- C R Chen
- Department of Anesthesiology, Ningbo First Hospital, Ningbo 315010, Zhejiang Province, China
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Cao Z, Meng B, Fan R, Liu M, Gao M, Xing Z, Luan X. Comparative proteomic analysis of ovaries from Huoyan geese between pre-laying and laying periods using an iTRAQ-based approach. Poult Sci 2018; 97:2170-2182. [DOI: 10.3382/ps/pey029] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Accepted: 02/22/2018] [Indexed: 01/12/2023] Open
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Gao EJ, Meng B, Su JQ, Peng TT, Qi ZZ, Jia B, Feng YH, Zhu MC. Structure, DNA bonding, and biological activity of a novel Pb(II) complex of 1,1-bis(5-(pyrazin-2-yl)-1,2,4-triazol-3-yl) methane. J STRUCT CHEM+ 2018. [DOI: 10.1134/s0022476617080121] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Pal A, Chen L, Yang L, Yang F, Meng B, Jheon AH, Ho SP. Micro-anatomical responses in periodontal complexes of mice to calibrated orthodontic forces on the crown. Orthod Craniofac Res 2017. [DOI: 10.1111/ocr.12172] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- A. Pal
- Departments of Preventive and Restorative Dental Sciences; University of California San Francisco; San Francisco CA USA
| | - L. Chen
- Departments of Preventive and Restorative Dental Sciences; University of California San Francisco; San Francisco CA USA
| | - L. Yang
- Departments of Preventive and Restorative Dental Sciences; University of California San Francisco; San Francisco CA USA
| | - F. Yang
- Departments of Preventive and Restorative Dental Sciences; University of California San Francisco; San Francisco CA USA
| | - B. Meng
- Orofacial Sciences; School of Dentistry; University of California San Francisco; San Francisco CA USA
| | - A. H. Jheon
- Orofacial Sciences; School of Dentistry; University of California San Francisco; San Francisco CA USA
| | - S. P. Ho
- Departments of Preventive and Restorative Dental Sciences; University of California San Francisco; San Francisco CA USA
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Zhou SL, Meng B, Ding JH. [The expression of serum hepatocyte growth factor in OSAHS]. Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2017; 31:690-693. [PMID: 29871348 DOI: 10.13201/j.issn.1001-1781.2017.09.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Indexed: 06/08/2023]
Abstract
Objective:To investigate the clinical significance of detecting peripheral blood hepatocyte growth factor(HGF) in OSAHS patients.Method:Ninety-six cases of OSAHS patients in our hospital were selected as OSAHS group,and were divided into 3 subgroups according to the PSG results:mild,medium and severe. Each group included 32 cases,Thirty-five cases of healthy persons were selected as control group. ELISA method was utilized to detect the HGF level of peripheral blood. HGF concentration was measured in 32 patients with severe OSAHS after 3 months of comprehensive treatment. The relationship between serum HGF and sleep respiration events was further analyzed.Result: The HGF concentration of peripheral blood increased with the severity of OSAHS.The serum levels of HGF in the control,mild,medium and severe group were(487.75±46.74)pg/ml,(519.44±50.77)pg/ml,(753.52±58.91) pg/ml and(829.49±61.74)pg/ml,respectively. There were significant differences among groups(F=117.733,P<0.01). HGF concentration in peripheral blood of OSAHS patients was unrelated to sex,age,and BMI(P>0.05),and positively correlated with AHI,negatively correlated with LSaO₂(P<0.01). After comprehensive treatment,the serum HGF concentration and AHI in severe OSAHS group were significantly decreased,while LSaO₂ was significantly increased.Conclusion:The level of HGF was increased in OSAHS patients and was positively correlated with the severity of OSAHS. Determining the level of HGF in peripheral blood is important for evaluating the severity of OSAHS and the degree of vascular endothelial dysfunction,and assessing the risk of cardiovascular disease.
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Affiliation(s)
- S L Zhou
- Department of Respiration,Jiaxian People's Hospital,Jiaxian,467100,China
| | - B Meng
- Department of Respiration,Henan Traditional Chinese Medicine Hospital
| | - J H Ding
- Department of Respiration,Pingdingshan First People's Hospital
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Zheng JW, Meng B, Li XY, Lu B, Wu GR, Chen JP. NF-κB/P65 signaling pathway: a potential therapeutic target in postoperative cognitive dysfunction after sevoflurane anesthesia. Eur Rev Med Pharmacol Sci 2017; 21:394-407. [PMID: 28165545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
OBJECTIVE This study aimed to explore the role of NF-κB/P65 signaling pathway in postoperative cognitive dysfunction (POCD) after sevoflurane anesthesia. MATERIALS AND METHODS A total of 120 male Sprague-Dawley (SD) rats were selected and assigned into five groups (24 rats in each group): the control, sevoflurane, sevoflurane + splenectomy, pyrrolidine dithiocarbamate (PDTC, a specific inhibitor of NF-κB), and sevoflurane + splenectomy + PDTC groups. Electrocardiogram (ECoG) and behavior changes of rats were monitored before and after anesthesia/operation. Ionized calcium-binding adapter molecules 1 (Iba-1) in the hippocampal zones were observed by immunofluorescence staining. Blood-brain barrier (BBB) permeability was determined by immunohistochemistry. The mRNA and protein expressions of NF-κB/P65 signaling pathway-related proteins and inflammatory cytokines were detected by qRT-PCR assay and Western blotting. RESULTS During the anesthesia/operation, the vital signs of rats were stable, but the ECoG in the sevoflurane and sevoflurane + splenectomy groups mainly presented slow waves. The ECoG arousal response in the sevoflurane + splenectomy + PDTC group was observed. At 24 h after the anesthesia/operation, the expressions of NF-κB and P65 in the hippocampal zone, the expressions of IκBα and inflammatory cytokines (IL-1β, IL-6 and TNF-α), the expression of Iba-1 in rat hippocampal dentate gyrus (DG) zone and CA3 zone, and the permeability of BBB were significantly increased and the behavior of rats changed dramatically (all p < 0.05), while PDTC treatments could eliminate these changes induced by the anesthesia/operation (all p < 0.05). No changes were observed in the expressions of NF-κB, P65, IκBα, Iba-1 and inflammatory cytokines (IL-1β, IL-6 and TNF-α), and the permeability of BBB and the behavior of rats in the sevoflurane and the PDTC groups (all p > 0.05). CONCLUSIONS These results suggest that the inhibition of NF-κB/P65 signaling pathway may relieve POCD after sevoflurane anesthesia.
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Affiliation(s)
- J-W Zheng
- Department of Anesthesiology, Ningbo No. 2 Hospital, Ningbo, China.
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Zhang H, Wang X, Dong L, Lv H, Li W, Song Z, Li L, Zhou S, Qiu L, Qian Z, Liu X, Feng L, Meng B, Fu K, Wang X, Pan-Hammarström Q, Wang P. 332O Co-expression of PD-L1 and p-AKT is associated with poor prognosis in diffuse large B-cell lymphoma via PD-1/PD-L1 axis activating intracellular AKT/mTOR pathway in tumor cells. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw586.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Tian C, Chen YF, Zhao P, Yue ZJ, Wang XF, Meng B, Zhang YZ. [A case report of Glomerular infiltration by intravascular large B-cell lymphoma]. Zhonghua Xue Ye Xue Za Zhi 2016; 37:897. [PMID: 27801324 PMCID: PMC7364875 DOI: 10.3760/cma.j.issn.0253-2727.2016.10.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- C Tian
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060, China
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Abstract
A new method of surface heparinizing biodegradable polymers was designed. A heparin-modified poly(L-lactic acid) (PLLA) system was developed by physically entrapping the heparin on the PLLA surface. The surface characterization and biological performance of these materials were carried out by SEM, attenuated-total-reflection spectroscopy, contact angle measurements, and platelet adhesion evaluations. The modification strategy was performed by reversible swelling of the PLLA surface following exposure to a solvent–nonsolvent mixture. This process resulted in the localized physical entrapment of the diffused heparin. X-ray photoelectron spectroscopy was used to confirm that control over the heparin surface density can be achieved by using set polymer treatment times. Platelet adhesion tests showed significant improvement in blood compatibility by the PLLA surfaces after modification.
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Affiliation(s)
- B. Meng
- Department of Materials Science and Engineering Tsinghua University, Beijing, China
| | - X. H. Wang
- Department of Materials Science and Engineering Tsinghua University, Beijing, China
| | - F. Z. Cui
- Department of Materials Science and Engineering Tsinghua University, Beijing, China
| | - H. Y. Dong
- Institute of Biomedical Engineering Dalian University Dalian, China
| | - F. Yu
- Department of Laboratory Animal Science Peking University Health Science Center Beijing, China
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Zhang LL, Meng B, Yang HL. [Effects of pelvic balance after posterior reduction of balanced L5-S1 Ⅲ-grade isthmic spondylolisthesis in adults]. Zhonghua Yi Xue Za Zhi 2016; 96:1811-4. [PMID: 27356787 DOI: 10.3760/cma.j.issn.0376-2491.2016.23.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To observe the changes in pelvic balance after posterior reduction of balanced L5-S1 Ⅲ-grade isthmic spondylolisthesis in adults. METHODS A total of 18 adult patients with balanced L5-S1 Ⅲ-grade isthmic spondylolisthesis were retrospectively studied after successful treatment by posterior decompression, reduction and L5-S1 interbody fusion in Department of Orthopedic Surgery, the First Affiliated Hospital of Soochow University from October 2009 to October 2014.L5-S1 of eight patients were fixed with pedical strews, while others were fixed upgrade to L4.Spino-pelvic parameters: slipping percentage (SP), spondy slip angle (SSA), pelvic incidence (PI), sacral slope (SS), pelvic tilt (PT) and lumbar lordosis (LL) were measured on standing lateral view radiograms.The changes in pelvic balance were analyzed after posterior reduction. RESULTS All the patients experienced significant changes in SP and SSA with (42.4%±8.3)% and (9.8±4.9)°improved significantly while no significant differences were recorded in PI, PT, SS and LL. PI, PT, SS and LL passed from an average(61.1±6.2)°, (16.2±4.5)°, (44.8±2.9)°, (51.3±9.3)°preoperatively to (61.4±6.1)°, (14.9±4.0)°, (46.5±3.0)°, (48.6±7.0)°respectively.According to K-means cluster analysis, pelvic balance improved postoperatively.No significant correlation was found for ΔPT, ΔSS with ΔSP, while ΔPT and ΔSS had a significant correlation with ΔSSA (correlation coefficient -0.77 and 0.82 respectively). CONCLUSION Posterior SSA reduction in adults with balanced L5-S1 Ⅲ-grade isthmic spondylolisthesis can improve the former pelvic balance.
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Affiliation(s)
- L L Zhang
- Department of Orthopedic Surgery, the First Affiliated Hospital of Soochow University, Suzhou 215006, China
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Sanders J, Abadi E, Meng B, Samei E. SU-F-I-45: An Automated Technique to Measure Image Contrast in Clinical CT Images. Med Phys 2016. [DOI: 10.1118/1.4955873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Oldham M, Yoon S, Meng B, Fathi Z, Beyer W, Adamson J, Alcorta D, Osada T, Lyerly K, Dewhirst M, Fecci P, Walder H, Spector N. WE-FG-BRA-01: Cancer Treatment Utilizing Photo-Activation of Psoralen with KV X-Rays. Med Phys 2016. [DOI: 10.1118/1.4957901] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Ma C, Ding YC, Yu W, Wang Q, Meng B, Huang T. MicroRNA-200c overexpression plays an inhibitory role in human pancreatic cancer stem cells by regulating epithelial-mesenchymal transition. Minerva Med 2015; 106:193-202. [PMID: 26081037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
AIM Cancer stem cells (CSCs) are believed to be the 'seed cell' in cancer recurrence and metastasis. MicroRNAs (miRNAs) have emerged as potential therapeutic candidates due to their ability to regulate the epithelial-mesenchymal transition (EMT). The goal of this study was to investigate the effect of miRNA-200c (miR-200c) on the EMT, tumorigenesis, colony formation, invasion and chemoresistance of human pancreatic cancer stem cells (PCSCs). METHODS PCSCs with CD24+CD44+ESA+ as the marker was sorted from PANC-1 cell line by fluorescence activated cell sorter (FACS). Quantitative real-time PCR (qRT-PCR) assay was used to detect the relative mRNA expression levels of miR-200c and EMT-associated phenotypes. Transfection of miR-200c mimic into PCSCs was performed to establish miR- 200c overexpressed cells. The assays of colony forming, cellular invasion and survival in vitro and tumor progression in vivo were performed. RESULTS Expression of miR-200c was significantly reduced in PCSCs compared with PANC-1 cells. However, the stable over expression of the miR-200c in the PCSCs resulted in a significant down-regulation of zinc-finger E-box binding homeobox 1 (ZEB1) and the Vimentin expression, an upregulation of the E-cadherin expression as well as a decrease of colony forming, chemoresistance and invasion in vitro and xenograft growth in vivo in nude mice by inhibition of the EMT. CONCLUSION Our study demonstrated that miR-200c may become a new therapeutic target for gene therapy in patients suffered from pancreatic cancer.
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Affiliation(s)
- C Ma
- Department of Hepatopancreatobiliary Surgery, The Affiliated Tumor Hospital of Zhengzhou University, Zhengzhou, China -
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Liu Y, Fu X, Tao S, Liu L, Li W, Meng B. Comparison and Analysis of Organochlorine Pesticides and Hexabromobiphenyls in Environmental Samples by Gas Chromatography-Electron Capture Detector and Gas Chromatography-Mass Spectrometry. J Chromatogr Sci 2014; 53:197-203. [DOI: 10.1093/chromsci/bmu048] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Dong Z, Yan L, Huang G, Zhang L, Mei B, Meng B. Ibuprofen partially attenuates neurodegenerative symptoms in presenilin conditional double-knockout mice. Neuroscience 2014; 270:58-68. [PMID: 24699228 DOI: 10.1016/j.neuroscience.2014.03.048] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [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: 11/24/2013] [Revised: 03/06/2014] [Accepted: 03/23/2014] [Indexed: 01/22/2023]
Abstract
Ibuprofen is a widely used nonsteroidal anti-inflammatory drug that reportedly reduces the risk of Alzheimer's disease (AD) development. The anti-inflammatory effect of ibuprofen occurred via inhibition of cyclooxygenases and anti-amyloidogenesis through modulation of γ-secretase. Presenilin 1 and 2 conditional double-knockout (cDKO) mice exhibited age-dependent memory impairment and forebrain degeneration without elevation of amyloid β deposition. Therefore, cDKO mice can be an ideal animal model on which to independently test the effects of ibuprofen anti-inflammatory properties on the prevention of AD. Three- and six-month-old cDKO mice were fed diet containing 375 ppm ibuprofen for six months. After multiple, well-validated behavioral tests, treatment with ibuprofen improved cognition-related behavioral performance, and drug efficacy was correlated with the timing of administration. Ibuprofen was more effective on six-month-old than on three-month-old cDKO mice. Biochemical analysis demonstrated that the effects of ibuprofen on glial fibrillary acidic protein and CD68 expression levels were uneven in different brain regions of cDKO mice and that age also influenced such effects. Tau hyperphosphorylation and the cleavage of caspase-3 decreased after ibuprofen treatment, and this effect was more significant in the older than the younger group of mice, which was consistent with the results of behavioral tests.
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Affiliation(s)
- Z Dong
- Key Laboratory of Brain Functional Genomics, Ministry of Education, Shanghai Key Laboratory of Brain Functional Genomics, East China Normal University, Shanghai 200062, China
| | - L Yan
- Key Laboratory of Brain Functional Genomics, Ministry of Education, Shanghai Key Laboratory of Brain Functional Genomics, East China Normal University, Shanghai 200062, China
| | - G Huang
- Key Laboratory of Brain Functional Genomics, Ministry of Education, Shanghai Key Laboratory of Brain Functional Genomics, East China Normal University, Shanghai 200062, China
| | - L Zhang
- Key Laboratory of Brain Functional Genomics, Ministry of Education, Shanghai Key Laboratory of Brain Functional Genomics, East China Normal University, Shanghai 200062, China
| | - B Mei
- Key Laboratory of Brain Functional Genomics, Ministry of Education, Shanghai Key Laboratory of Brain Functional Genomics, East China Normal University, Shanghai 200062, China
| | - B Meng
- Key Laboratory of Brain Functional Genomics, Ministry of Education, Shanghai Key Laboratory of Brain Functional Genomics, East China Normal University, Shanghai 200062, China.
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Zhou CW, Zhao JX, Liu Q, Meng B, Wu ZH. Study on Mechanical, Thermal Properties and Morphology of Biodegradable Poly(butylene succinate)/Nano-TiO2 Composites. INT POLYM PROC 2013. [DOI: 10.3139/217.2750] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
Nanocomposites of Poly(butylene succinate) (PBS) and poly(∊-caprolactone) (PCL)-coated nano-TiO2 (C–TiO2) are prepared by melt-blending technique. The influence of high loading C–TiO2 on the microstructure, mechanical, thermal and dynamic rheological properties of pure PBS and its nanocomposites are studied. Scanning Electron Microscope results demonstrate that the surface modification and content of TiO2 are main factors to affect the microstructure of composites. Mechanical tests show that adding C–TiO2 into PBS matrix is an effective way to improve the impact strength of the PBS. Impact property and tensile property are sensitive to different microstructure, the former is distance between particles and the latter is the aggregation of particles. Dynamic rheological tests show that the incorporation of C–TiO2 particles into PBS can improve the elastic properties of PBS nanocomposites and restrict the mobility of PBS chains. Differential scanning calorimeter indicates the addition of C–TiO2 can increase the crystallization rate but do not influence the main PBS crystals. Depending on the state of composites, the C–TiO2 restricts or improves the mobility of PBS molecules.
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Affiliation(s)
- C.-W. Zhou
- College of Polymer Science and Engineering, Sichuan University, Chengdu, PRC
| | - J.-X. Zhao
- College of Polymer Science and Engineering, Sichuan University, Chengdu, PRC
| | - Q. Liu
- College of Polymer Science and Engineering, Sichuan University, Chengdu, PRC
| | - B. Meng
- College of Polymer Science and Engineering, Sichuan University, Chengdu, PRC
| | - Z.-H. Wu
- College of Polymer Science and Engineering, Sichuan University, Chengdu, PRC
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Meng B, Li R, Han B, Chen J, Xing L. Non-Coplanar Cone Beam CT Reconstruction With Limited Angle of Projections Using Rigid Image Registration Facilitated Prior Image Constrained Compressed Sensing. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.376] [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: 10/26/2022]
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Meng B, Li R, Han B, Cheng J, Xing L. TH-C-103-06: Non-Coplanar Cone Beam CT Reconstruction with Limited Angle of Projections Using Rigid Image Registration Facilitated Prior Image Constrained Compressed Sensing. Med Phys 2013. [DOI: 10.1118/1.4815786] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Abstract
Abstract
The influence of solvent evaporation rate, in the dry-casting process, on crystallinity and morphology of crystallizable polymeric membrane was studied. Poly-l-lactic acid (PLLA) was taken as an example. The membranes were characterized by scanning electron microscopy (SEM) and differential scanning calorimetry (DSC). By controlling the solvent evaporation rate, samples with various crystallinities were prepared. From higher to lower crystallinity the membranes exhibit three types of surface morphology in sequence: granule, stripe and smooth.
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Affiliation(s)
- B. Meng
- Department of Materials Science & Engineering, Tsinghua University, Beijing, P. R. China
| | - F. Z. Cui
- Department of Materials Science & Engineering, Tsinghua University, Beijing, P. R. China
| | - Q. Cai
- Department of Materials Science & Engineering, Tsinghua University, Beijing, P. R. China
| | - Y. Zhang
- Department of Materials Science & Engineering, Tsinghua University, Beijing, P. R. China
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Tian X, Zheng Y, Chintaluri K, Meng B. First Report of Impatiens necrotic spot virus on Hiemalis Begonia (Begonia × hiemalis) in Canada. Plant Dis 2013; 97:291. [PMID: 30722332 DOI: 10.1094/pdis-09-12-0868-pdn] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Impatiens necrotic spot virus (INSV) is a member of the genus Tospovirus, and one of the prevalent viruses infecting ornamental plants, including begonia. Since the late 1980s, it has caused dramatic and unusual diseases on many flower crops, leading to considerable economic losses to the greenhouse floriculture industry (1). The western flower thrips, Frankliniella occidentalis (Pergande), is the only species currently known to vector INSV (1). In spring 2012, stunted plant growth and necrotic spots were observed on leaves of all Hiemalis begonias (Begonia × hiemalis Fotsch.) in a greenhouse in southwest Ontario, Canada. Initial symptoms were mosaic patterns, followed by necrotic spots on leaves, concentric rings, then necrotic areas on flowers, stem and vein necrosis, and finally stunting and burning of foliage similar to damage caused by sunburn or chemical injury. Thrips were observed colonizing nearby begonia plants. Leaf tissue from five symptomatic plants tested positive for INSV in a double-antibody sandwich (DAS)-ELISA with INSV-specific ImmunoStrips (Agdia Inc., Elkhart, IN). To confirm this, five of the leaf samples that were found to be positive for INSV in ELISA tests were mechanically inoculated to 10 plants of Hiemalis Begonia. Out of the 10 inoculated plants, eight produced necrotic local lesions and necrotic spots that are typical of INSV infection, followed by systemic infection of upper leaves 30 days after inoculation. The presence of INSV in the eight symptomatic plants was confirmed using the commercial INSV Pocket Diagnostic Kit (Forsite Diagnostics Ltd., York, UK) according to the manufacturer's instructions. Results showed that all eight symptomatic plants were positive for INSV. The other two plants were asymptomatic and tested negative for INSV. To further confirm the identity of this virus, total RNAs were isolated from symptomatic leave of begonia plants using TRIzol reagent (Invitrogen, Life Technologies Grand Island, NY) and amplified using reverse transcription (RT)-PCR analysis. A pair of primers was designed based on the consensus sequence of the N gene for a number of isolates retrieved from GenBank. These primers were INSV-F2286 (5'CCAAGCTCAACATGTTTAGC 3', nt positions 2286 to 2305 of AB109100) and INSV-R2604 (5'ACTGCATCTTGCCTATCCTT 3', nt positions 2664 to 2683 of AB109100). The expected amplification product of 398 bp was obtained, and was cloned into the vector pGEM-T Easy (Promega Corp., Madison, WI). Two clones were sequenced using the vector primer M13Forward. The sequences of these two clones were identical and the sequence was deposited in GenBank (Accession No. JX846907). BLAST analysis indicated that the sequence was 98 to 99% identical to INSV isolates from Japan (AB109100), the United States (D00914), and the Netherlands (X66972). To our knowledge, this is the first report of INSV infection in Begonia × hiemalis in Canada. This finding provides further evidence for the spread of the virus within North America. Further studies are required to determine the impact of INSV on the begonia industry in Canada and to determine viable management strategies, if necessary. Reference: (1) M. L. Daughtrey et al. Plant Dis. 81:1220, 1997.
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Affiliation(s)
- X Tian
- School of Environmental Sciences (SES), University of Guelph, Ontario N1G 2W1, Canada
| | - Y Zheng
- SES and Vineland Research and Innovation Center, Vineland, Ontario, Canada
| | - K Chintaluri
- Department of Molecular and Cellular Biology, University of Guelph, Ontario N1G 2W1, Canada
| | - B Meng
- Department of Molecular and Cellular Biology, University of Guelph, Ontario N1G 2W1, Canada
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Kuang Y, Pratx G, Qian J, Meng B, Bazalova M, Xing L. WE-C-217BCD-07: Best in Physics (Joint Eyiaging-Therapy) - Direct Imaging of the Uptake of Platinum Anticancer Agents Using X-Ray Stimulated Fluorescence: A Proof-Of-Concept Study. Med Phys 2012; 39:3950-3951. [DOI: 10.1118/1.4736123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Kuang Y, Pratx G, Meng B, Qian J, Bazalova M, Xing L. TH-A-213CD-02: BEST IN PHYSICS (IMAGING) - The Feasibility of Multiplexed Biomarker Detection Using X-Ray Stimulated Fluorescence Imaging. Med Phys 2012. [DOI: 10.1118/1.4736264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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