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Hu H, Tong K, Tsang JY, Ko CW, Tam F, Loong TC, Tse GM. Subtyping of triple-negative breast cancers: its prognostication and implications in diagnosis of breast origin. ESMO Open 2024; 9:102993. [PMID: 38613910 PMCID: PMC11024544 DOI: 10.1016/j.esmoop.2024.102993] [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: 11/20/2023] [Revised: 03/06/2024] [Accepted: 03/12/2024] [Indexed: 04/15/2024] Open
Abstract
BACKGROUND Triple-negative breast cancer (TNBC) subtyping by gene profiling has provided valuable clinical information. Here, we aimed to evaluate the relevance of TNBC subtyping using immunohistochemistry (IHC), which could be a more clinically practical approach, for prognostication and applications in patient management. METHODS A total of 123 TNBC cases were classified using androgen receptor (AR), CD8, Forkhead box C1 protein (FOXC1), and doublecortin-like kinase 1 (DCLK1) into luminal androgen receptor (LAR), basal-like immunosuppressive (BLIS), mesenchymal-like (MES), and immunomodulatory (IM) subtypes. The IM cases were further divided into the IM-excluded and IM-inflamed categories by CD8 spatial distribution. Their clinicopathological and biomarker profiles and prognoses were evaluated. RESULTS LAR (28.6%) and MES (11.2%) were the most and least frequent subtypes. The IHC-TNBC subtypes demonstrated distinct clinicopathological features and biomarker profiles, corresponding to the reported features in gene profiling studies. IM-inflamed subtype had the best outcome, while BLIS had a significantly poorer survival. Differential breast-specific marker expressions were found. Trichorhinophalangeal syndrome type 1 (TRPS1) was more sensitive for IM-inflamed and BLIS, GATA-binding protein 3 (GATA3) for IM-excluded and MES, and gross cystic disease fluid protein 15 (GCDFP15) for LAR subtypes. CONCLUSIONS Our findings demonstrated the feasibility of IHC surrogates to stratify TNBC subtypes with distinct features and prognoses. The IM subtype can be refined by its CD8 spatial pattern. Breast-specific marker expression varied among the subtypes. Marker selection should be tailored accordingly.
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Affiliation(s)
- H Hu
- Division of Breast Surgery, Department of General Surgery, Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University; The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen, China
| | - K Tong
- Department of Anatomical and Cellular Pathology, State Key Laboratory of Translational Oncology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong
| | - J Y Tsang
- Department of Anatomical and Cellular Pathology, State Key Laboratory of Translational Oncology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong
| | - C W Ko
- Department of Anatomical and Cellular Pathology, State Key Laboratory of Translational Oncology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong
| | - F Tam
- Department of Pathology, Kwong Wah Hospital, Hong Kong
| | - T C Loong
- Department of Pathology, Tuen Mun Hospital, Hong Kong
| | - G M Tse
- Department of Anatomical and Cellular Pathology, State Key Laboratory of Translational Oncology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong.
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Wang XY, Zhang HQ, Tong K, Han J, Zhao XY, Song YT, Hao JR, Sun N, Gao C. Glutamatergic Projection from the Ventral Tegmental Area to the Zona Incerta Regulates Fear Response. Neuroscience 2024; 541:14-22. [PMID: 38280511 DOI: 10.1016/j.neuroscience.2024.01.020] [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: 09/23/2023] [Revised: 01/08/2024] [Accepted: 01/23/2024] [Indexed: 01/29/2024]
Abstract
Innate defensive behavior is important for animal survival. The Vglut2+ neurons in the ventral tegmental area (VTA) have been demonstrated to play important roles in innate defensive behaviors, but the neural circuit mechanism is still unclear. Here, we find that VTA - zona incerta (ZI) glutamatergic projection is involved in regulating innate fear responses. Combining calcium signal recording and chemogentics, we find that VTA-Vglut2+ neurons respond to foot shock stimulus. Inhibition of VTA-Vglut2+ neurons reduces foot shock-evoked freezing, while chemogentic activation of these neurons results in an enhanced fear response. Using viral tracing and immunofluorescence, we show that VTA - Vglut2+ neurons send direct excitatory outputs to the ZI. Moreover, we find that the activity of VTAVglut2 - ZI projection is pivotal in modulating fear response. Together, our study reveals a new VTA - ZI glutamatergic circuit in mediating innate fear response and provides a potential target for treating post-traumatic stress disorder.
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Affiliation(s)
- Xin-Yi Wang
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, Jiangsu 221004, China
| | - Hong-Quan Zhang
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, Jiangsu 221004, China
| | - Kun Tong
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, Jiangsu 221004, China
| | - Jie Han
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, Jiangsu 221004, China
| | - Xin-Yu Zhao
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, Jiangsu 221004, China
| | - Yu-Tong Song
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, Jiangsu 221004, China
| | - Jing-Ru Hao
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, Jiangsu 221004, China
| | - Nan Sun
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, Jiangsu 221004, China
| | - Can Gao
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, Jiangsu 221004, China; School of Life Sciences, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, Jiangsu 221004, China.
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Yang J, Zhou H, Li H, Zhao F, Tong K. Nomogram incorporating prognostic immune-inflammatory-nutritional score for survival prediction in pancreatic cancer: a retrospective study. BMC Cancer 2024; 24:193. [PMID: 38347528 PMCID: PMC10860224 DOI: 10.1186/s12885-024-11948-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Accepted: 02/02/2024] [Indexed: 02/15/2024] Open
Abstract
BACKGROUND Prognosis prediction for pancreatic cancer has always been difficult in clinical practice because of its high heterogeneity and mortality. The aim of the study was to assess the value of prognostic immune-inflammatory-nutritional (PIIN) score on overall survival (OS) in postoperative patients with pancreatic cancer and to develop a nomogram incorporating PIIN score. METHODS This study retrospectively analyzed the clinic pathological data of 155 patients with pancreatic cancer who underwent radical surgery. PIIN score was calculated by measuring the fibrinogen (FIB), neutrophil to lymphocyte ratio (NLR), systemic immune-inflammation index (SII), albumin-bilirubin (ALBI) score, and prognostic nutritional index (PNI). Patients were divided into two groups by PIIN score levels over a threshold of 37.2. Univariate and multivariate analysis were performed using the Cox regression analysis model. The time-dependent receiver operating characteristic (ROC) curve was plotted to compare the prognostic values of the scoring systems. Finally, a nomogram based on PIIN score was constructed and validated. RESULTS Multivariate regression analysis showed that PIIN score (hazard ratio (HR) = 2.171, 95% confidence interval (CI) = 1.207-3.906, P = 0.010), lymphovascular invasion (HR = 1.663, 95% CI = 1.081-2.557, P = 0.021), poor tumor grade (HR = 2.577, 95% CI = 1.668-3.982, P < 0.001), bad TNM stage (I vs. II: HR = 1.791, 95% CI = 1.103-2.906, P = 0.018; I vs. III: HR = 4.313, 95% CI = 2.365-7.865, P < 0.001) and without adjuvant chemotherapy (HR = 0.552, 95% CI = 0.368-0.829, P = 0.004) were independent risk factors for OS. The time-dependent ROC curves revealed that PIIN score was better than the other scoring systems in predicting survival prognosis. And last, the nomogram established from independent factors such as PIIN score had good predictive power for OS. The ROC curve results showed that the AUC values for 1, 3 and 5 years were 0.826, 0.798 and 0.846, respectively. The calibration plots showed the superior clinical applicability of the nomogram. CONCLUSION The nomogram model based on PIIN score can be utilized as one of the prognosis stratifications as well as postoperative follow-up for the development of individual treatment for pancreatic cancer.
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Affiliation(s)
- Jie Yang
- Department of Hepatobiliary and Pancreatic Surgery, First Hospital of Jiaxing, Affiliated Hospital of Jiaxing University, 1882 Zhonghuan South Road, Jiaxing, Zhejiang, 314000, China
| | - Hongkun Zhou
- Department of Hepatobiliary and Pancreatic Surgery, First Hospital of Jiaxing, Affiliated Hospital of Jiaxing University, 1882 Zhonghuan South Road, Jiaxing, Zhejiang, 314000, China
| | - Huangbao Li
- Department of Hepatobiliary and Pancreatic Surgery, First Hospital of Jiaxing, Affiliated Hospital of Jiaxing University, 1882 Zhonghuan South Road, Jiaxing, Zhejiang, 314000, China
| | - Fengqing Zhao
- Department of Hepatobiliary and Pancreatic Surgery, First Hospital of Jiaxing, Affiliated Hospital of Jiaxing University, 1882 Zhonghuan South Road, Jiaxing, Zhejiang, 314000, China
| | - Kun Tong
- Department of Hepatobiliary and Pancreatic Surgery, First Hospital of Jiaxing, Affiliated Hospital of Jiaxing University, 1882 Zhonghuan South Road, Jiaxing, Zhejiang, 314000, China.
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Yang X, Lv X, Tong K, Peng M, He Z, Sun P, Sun X. Cocatalyst Modified Polymeric Carbon Nitride Photoanode for Enhanced Photoelectrochemical Properties. Chempluschem 2024:e202300650. [PMID: 38308611 DOI: 10.1002/cplu.202300650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 12/15/2023] [Accepted: 02/02/2024] [Indexed: 02/05/2024]
Abstract
As a new organic photocatalyst, polymeric carbon nitride (CN) has shown good application potential in the field of photoelectrochemistry due to its unique physical and chemical properties, but its application has been seriously hindered due to its inherent characteristics such as the difficulty in charge separation. In this study, FeOOH modified CN photoanode (CN-Fe) was constructed to investigate the effect of the cocatalyst on the charge injection capacity of organic semiconductor photoelectrodes. The experimental results demonstrate significant improvement in the charge injection efficiency of the photoanode due to the introduction of FeOOH cocatalyst, leading to enhanced photoelectrochemical performance with approximately 2.4 times increase in photocurrent density. By thoroughly investigating the mechanism behind the loading of FeOOH on the polymeric carbon nitride photoanode, we gained profound insights into the behavior of charge carriers and reaction kinetics during the photoelectrocatalytic process.
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Affiliation(s)
- Xuerong Yang
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, 443002, Yichang, China
| | - Xiaowei Lv
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, 443002, Yichang, China
- Hubei Three Gorges Laboratory, 443007, Yichang, Hubei, China
| | - Kun Tong
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, 443002, Yichang, China
| | - Mengyang Peng
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, 443002, Yichang, China
| | - Zeyao He
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, 443002, Yichang, China
| | - Panpan Sun
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, 443002, Yichang, China
| | - Xiaohua Sun
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, 443002, Yichang, China
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Wang P, Tong K, Li Y, Li X, Zhang Y, Gu J, Lei P, Yan S, Hu P. The role and mechanism of HIF-1α-mediated glypican-3 secretion in hypoxia-induced tumor progression in hepatocellular carcinoma. Cell Signal 2024; 114:111007. [PMID: 38081444 DOI: 10.1016/j.cellsig.2023.111007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 11/19/2023] [Accepted: 12/08/2023] [Indexed: 01/01/2024]
Abstract
OBJECTIVE To explore the expression and secretion mechanism of glypican-3 (GPC3) in hepatocellular carcinoma (HCC) cells under hypoxic conditions, and its role in tumor progression. METHODS Huh7 cells with and without the knockdown of hypoxia-inducible factor 1-alpha (HIF-1α) were cultured under 1% O2 for varying durations to induce hypoxia. The expression levels of GPC3, HSP70, CD63, STX11 and SYT7 in the cytoplasm and exosomes of Huh7 cells were evaluated by western blotting and immunofluorescence. GPC3 protein expression was further measured in cells treated with GW4869 under hypoxic conditions. Huh7 cells and human umbilical vein endothelial cells (HUVECs) were cultured with the exosomes extracted from the control and GPC3-knockdown cells, the cell proliferation, migration, epithelial-mesenchymal transition (EMT), invasion, and in vitro angiogenesis were analyzed. Tumor xenografts were established to assess the role of GPC3-deficient exosomes in tumor growth. RESULTS Hypoxic culture conditions downregulated GPC3, STX11 and SYT7 protein levels in the Huh7 cells and upregulated GPC3 mRNA, and also increased GPC3 protein expression in the exosomes. HIF-1α knockdown, as well as treatment with GW4869, upregulated GPC3 protein in the Huh7 cells grown under 1% O2, but downregulated exosomal GPC3. Furthermore, exosomes derived from the GPC3-knockdown cells inhibited the proliferation and migration of Huh7 cells, decreased the expression of N-cadherin, vimentin, β-catenin, c-Myc and cyclin D1, and increased that of E-cadherin. Likewise, the GPC3-deficient exosomes also suppressed the invasion and tube formation ability of the HUVECs compared to that of control cells. Consistent with the in vitro results, the GPC3-deficient exosomes also repressed tumor growth in vivo. CONCLUSION Hypoxia promoted secretion of exosomal GPC3 through the activation of HIF-1α. GPC3-deficient exosomes inhibited the proliferation, migration and EMT of HCC cells via the Wnt/β-catenin signaling pathway, and suppressed the angiogenic potential of HUVECs. This provided a novel understanding of the role of exosomal GPC3 in HCC progression.
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Affiliation(s)
- Pingfeng Wang
- Department of Laboratory Medicine, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, 442000. China; Biomedical Engineering College, Hubei University of Medicine, Shiyan, Hubei, 442000. China; Hubei Key Laboratory of Embryonic Stem Cell Research, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, 442000. China
| | - Kun Tong
- Hubei Key Laboratory of Embryonic Stem Cell Research, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, 442000. China; Department of Laboratory Medicine, Huanggang Central Hospital, China
| | - Ying Li
- Department of Blood Transfusion, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, 442000. China
| | - Xuejie Li
- Hubei Key Laboratory of Embryonic Stem Cell Research, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, 442000. China; Institute of Biomedical Research, Hubei Clinical Research Center for Precise Diagnosis and Treatment of HCC, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, 442000.China
| | - Yuan Zhang
- Biomedical Engineering College, Hubei University of Medicine, Shiyan, Hubei, 442000. China
| | - Jiangxue Gu
- Biomedical Engineering College, Hubei University of Medicine, Shiyan, Hubei, 442000. China
| | - Panwei Lei
- Hospital of Stomatology Wuhan University, Wuhan, Hubei, 430000. China
| | - Shirong Yan
- Department of Laboratory Medicine, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, 442000. China; Hubei Key Laboratory of Wudang Local Chinese Medicine Research, School of Pharmaceutical Sciences, Hubei University of Medicine, Shiyan, Hubei, 442000. China.
| | - Pei Hu
- Department of Laboratory Medicine, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, 442000. China; Biomedical Engineering College, Hubei University of Medicine, Shiyan, Hubei, 442000. China.
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Tong K, Wang P, Li Y, Tong Y, Li X, Yan S, Hu P. Resveratrol Inhibits Hepatocellular Carcinoma Progression through Regulating Exosome Secretion. Curr Med Chem 2024; 31:2107-2118. [PMID: 37711128 DOI: 10.2174/0929867331666230914090053] [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: 11/22/2022] [Revised: 07/23/2023] [Accepted: 07/26/2023] [Indexed: 09/16/2023]
Abstract
BACKGROUND AND OBJECTIVES Resveratrol is a promising drug for tumor therapy, but its anti-tumor mechanism remains unclarified. The present study aimed to explore the effect of resveratrol on the secretion of exosomes and the role of resveratrol-induced exosomes in the progression of hepatocellular carcinoma. METHODS The number and contents of exosomes induced by resveratrol were determined by nanoparticle tracking analysis and high-throughput sequencing in Huh7 cells, respectively. Expression of Rab27a was assessed by western blotting and immunofluorescence. Cell proliferation, migration and epithelial-mesenchymal transition were examined with the stimuli of resveratrol and exosomes, the activity of autophagy and wnt/β-catenin signaling induced by resveratrol-induced exosomes and knockdown of lncRNA SNHG29 were monitored by western blotting and immunofluorescence. RESULTS It was found that resveratrol might inhibit the exosome secretion by down-regulating the expression of Rab27a, thereby suppressing the proliferation, migration and epithelial-mesenchymal transition of Huh7 cells. Moreover, resveratrol-induced exosomes could also inhibit the malignant phenotype of Huh7 cells via inhibiting the nuclear translocation of β-catenin and the activation of autophagy, which lncRNA SNHG29 might mediate. CONCLUSION Resveratrol inhibits hepatocellular carcinoma progression by regulating exosome secretion and contents.
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Affiliation(s)
- Kun Tong
- Department of Laboratory Medicine, Taihe Hospital, Hubei University of Medicine, Shiyan, China
- Department of Laboratory Medicine, Huang Gang Central Hospital, Huanggang, China
| | - Pingfeng Wang
- Department of Laboratory Medicine, Taihe Hospital, Hubei University of Medicine, Shiyan, China
- Hubei Key Laboratory of Embryonic Stem Cell Research, Hubei University of Medicine, Shiyan, China
| | - Ying Li
- Department of Laboratory Medicine, Taihe Hospital, Hubei University of Medicine, Shiyan, China
| | - Yaoyao Tong
- Institute of Biomedical Research, Hubei Clinical Research Center for Precise Diagnosis and Treatment of HCC, Taihe Hospital, Hubei University of Medicine, Shiyan, China
- Department of Laboratory Medicine, General Hospital of the Yangtze River Shipping, Wuhan, China
| | - Xuejie Li
- Department of Laboratory Medicine, Taihe Hospital, Hubei University of Medicine, Shiyan, China
| | - Shirong Yan
- Department of Laboratory Medicine, Taihe Hospital, Hubei University of Medicine, Shiyan, China
- Hubei Key Laboratory of Wudang Local Chinese Medicine Research, School of Pharmaceutical Sciences, Hubei University of Medicine, Shiyan, China
| | - Pei Hu
- Department of Laboratory Medicine, Taihe Hospital, Hubei University of Medicine, Shiyan, China
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Tong K, Bu GK, Jing SQ, Wu T, Song YT, You Y, Liu L, Chen YH, Hao JR, Sun N, Gao C. Projections from the Prefrontal Cortex to Zona Incerta Mediate Fear Generalization. Neurosci Bull 2023; 39:1151-1156. [PMID: 36930230 PMCID: PMC10313584 DOI: 10.1007/s12264-023-01046-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Accepted: 11/29/2022] [Indexed: 03/18/2023] Open
Affiliation(s)
- Kun Tong
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, 221004, China
| | - Guang-Kai Bu
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, 221004, China
| | - Si-Qi Jing
- Jiangsu Province Key Laboratory of Brain Disease and Bioinformation, Research Center for Biochemistry and Molecular Biology, Xuzhou Medical University, Xuzhou, 221004, China
| | - Tong Wu
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, 221004, China
- Department of Anesthesia, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, 221002, China
| | - Yu-Tong Song
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, 221004, China
| | - Yue You
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, 221004, China
| | - Le Liu
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, 221004, China
| | - Yuan-Hao Chen
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, 221004, China
| | - Jing-Ru Hao
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, 221004, China
| | - Nan Sun
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, 221004, China
| | - Can Gao
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, 221004, China.
- School of Life Sciences, Xuzhou Medical University, Xuzhou, 221004, China.
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Wang M, Tong K, Chen Z, Wen Z. Mechanisms of 15-Epi-LXA4-Mediated HO-1 in Cytoprotection Following Inflammatory Injury. J Surg Res 2023; 281:245-255. [PMID: 36209683 DOI: 10.1016/j.jss.2022.08.010] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 07/07/2022] [Accepted: 08/16/2022] [Indexed: 11/07/2022]
Abstract
INTRODUCTION Heme oxygenase-1 (HO-1) is a protective protein in oxidative stress response. LXA4 is an "inflammatory braking signal" that is widely studied at present. The purpose of this study was to elucidate that LXA4 can protect cells by inducing HO-1 in human pulmonary microvascular endothelial cells (HPMECs) as in vitro model to explain acute lung injury after severe acute pancreatitis. METHODS This study was performed in two parts: (1) To investigate the mechanisms of lipoxin A4-induced HO-1 expression in vitro, the study subjects were divided into four groups: a control group, LXA4 group (50 ng/mL LXA4), inhibitor group (50 ng/mL LXA4 + 20 μM LY294002 or 50 ng/mL LXA4 + 2 nmol/mL Bis II), and agonist group (50 ng/mL insulin-like growth factor 1, PMA). Western blotting was used to detect the expression of p-Akt, Akt, protein kinase C (PKC), p-Nrf2, Nrf2, and Keap1, and the location of Nrf2 was detected using immunofluorescence. The activation of antioxidant responsive element induced by Nrf2 was detected using Electrophoretic Mobility Shift Assay and (2) to investigate the cytoprotection of HO-1 induced by LXA4 in vitro, the subjects were divided into four groups: a control group, tumor necrosis factor α (TNF-α) group (50 ng/mL), LXA4 group (50 ng/mL TNF-α + 50 ng/mL LXA4), and Zinc protoporphyrin IX group (pretreated with 0.5 μM Zinc protoporphyrin IXfor 12 h, followed by 50 ng/mL TNF-α + 50 ng/mL LXA4). BCECF/AM-labeled THP-1 cells were used to analyze the adhesion of HPMECs, and a mitochondrial membrane potential assay kit with JC-1 was used to analyze the apoptosis of HPMECs. RESULTS In part one, (1) LXA4 upregulated the expression of HO-1 in a dose-dependent manner and (2) LXA4 activated the PI3K/Akt and PKC pathways and modulated the phosphorylation and subsequent depolymerization of Nrf2 from Keap1, promoting the translocation of Nrf2 to the nucleus. In part two, (1) LXA4 reversed the changes in mitochondrial membrane potential to alleviate apoptosis in HPMECs and (2) LXA4 attenuated the adhesion of HPMECs induced by TNF-α. CONCLUSIONS LXA4 can activate the PI3K/Akt and PKC pathways and induce the phosphorylation of Nrf2, resulting in the upregulation of HO-1. In addition, LXA4 alleviates adhesion and protects mitochondrial function by upregulating the expression of HO-1, which exerts cytoprotection in severe acute pancreatitis-induced lung injury.
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Affiliation(s)
- Meng Wang
- Department of Hepatopancreatobiliary Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - Kun Tong
- Department of Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - Zhe Chen
- Department of Hepatopancreatobiliary Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - Zhengde Wen
- Department of Hepatopancreatobiliary Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province, China; Wenzhou Key Laboratory of perioperative medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province, China.
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Pan Y, Tong K, Lin M, Zhuang W, Zhu W, Chen X, Li Q. Aggregation behaviours of sulfobetaine zwitterionic surfactants in EAN. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120608] [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]
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10
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Li Q, Sun D, Hua J, Jiang K, Xu Z, Tong K. Enhancing low-temperature thermal remediation of petroleum sludge by solvent deasphalting. Chemosphere 2022; 304:135278. [PMID: 35697105 DOI: 10.1016/j.chemosphere.2022.135278] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 05/18/2022] [Accepted: 06/05/2022] [Indexed: 06/15/2023]
Abstract
Thermal treatment is a promising technique for treating petroleum sludge (PS). However, asphaltenes as a recalcitrant fraction of PS induce strong bounding between petroleum and minerals, and therefore lead to the need for high temperature and hence high energy consumption in thermal treatment of PS. In this study, a novel method combining a deasphalting pretreatment of PS with low-temperature thermal desorption (LTTD) was developed. The efficiency of deasphalting was found to be positively correlated to the ability of n-alkanes and asphaltene dispersants in dispersing asphaltenes. In treating six different kinds of PS, the residual oil contents were all below 2.5% after the deasphalting alone. Compared with direct thermal desorption at 600 °C for 1 h, dodecyl benzene sulfonic acid (DBSA)-assisted heptane deasphalting made thermal desorption at 350 °C for 1 h sufficient to treat these APS. The residual oil content of sludge after LTTD is lower than 0.45%. FT-IR, Raman spectra and XPS analysis confirmed that the carbon residue in APS after LTTD is primarily graphite state, which is extremely stable and does not migrate to the surrounding environment as compared with the crude oil in the APS. Hence, solvent deasphalting results in effective treatment of PS by LTTD, while the solvent can be recycled by distillation and crude oil recovered as value-added petroleum resource. The LTTD represents therefore a novel green strategy for treating PS and resource utilization.
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Affiliation(s)
- Qi Li
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan, Shandong, 250100, PR China
| | - Dejun Sun
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan, Shandong, 250100, PR China.
| | - Jifei Hua
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan, Shandong, 250100, PR China
| | - Kai Jiang
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan, Shandong, 250100, PR China
| | - Zhenghe Xu
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, PR China; Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Kun Tong
- State Key Laboratory of Petroleum Pollution Control, Beijing, 102206, China
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11
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Chen H, Tong K. The Contributions of Supramolecular Kinetics to Dynamics of Supramolecular Polymers. Chempluschem 2022; 87:e202200279. [PMID: 36229412 DOI: 10.1002/cplu.202200279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Revised: 09/18/2022] [Indexed: 11/08/2022]
Abstract
Supramolecular polymers exhibit well-controlled dynamics with fascinating capacity for remodeling, self-healing, and stimuli-responsiveness. Supramolecular kinetics of non-covalent bonds is a dominant control handle among the relevant factors to tailor dynamics of supramolecular polymers. This Review focuses on elucidating how supramolecular kinetics dictates the polymer dynamics in supramolecular polymer systems. The ways to tailor supramolecular kinetics are firstly examined as prerequisites for structure-activity study of supramolecular polymers. We next discuss the role of supramolecular kinetics in supramolecular polymers under different polymer architectures by the combination of both of theoretical and experimental studies. Finally, we conclude by discussing the existing challenges and opportunities in the current studies.
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Affiliation(s)
- Hao Chen
- School of Chemistry and Chemical Engineering, Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, Shandong University, Jinan, 250100, P. R. China
| | - Kun Tong
- Beijing Institute of Aerospace Testing Technology, Beijing Key Laboratory of Research and Application for Aerospace Green Propellants, Beijing, 100074, P. R. China
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12
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Xie B, Cheng LC, Yin GL, Liu BA, Hu ZL, Tong K. [Clinicopathological features of low-grade oncocytic renal tumor (CD117-negative, cytokeratin 7-positive): report of seven cases]. Zhonghua Bing Li Xue Za Zhi 2022; 51:719-725. [PMID: 35922161 DOI: 10.3760/cma.j.cn112151-20220410-00263] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To explore clinicopathological features of low-grade oncocytic tumor (LOT) of the kidney and to analyze its relationship to hybrid oncocytic/chromophobe tumor (HOCT) of the kidney, renal oncocytoma (RO), and chromophobe renal cell carcinoma (chRCC). Methods: Seven LOTs were identified from the pathologic archives of two hospitals, including Xiangya Hospital (5 cases) and the Second Xiangya Hospital (2 cases) of Central South University between 2012 and 2019. Clinical data of the LOTs were collected. The tumor morphology was analyzed and immunohistochemistry was performed. Results: All LOTs occurred in adults, aged from 49 to 72 years (median 56.0 years, mean 60.7 years). The tumor size ranged from 2.5 to 6.0 cm (median 4.3 cm, mean 4.3 cm). There were three male and four female patients. Three cases occurred in the left kidney and four in the right. All the tumors were solitary lesions without the clinicopathologic background of Birt-Hogg-Dubé (BHD) syndrome or oncocytosis. Five patients had available follow-up data (follow-up period 23-95 months, median 69.0 months, mean 64.6 months) and all were alive without disease. Microscopically, all LOTs were well-circumscribed (7/7). Three LOTs were partly encapsulated. The tumors demonstrated a predominant growth pattern comprising prominently compact small nests surrounded by delicately branching thin-walled blood vessels, imparting an organoid architecture (7/7), but variable numbers of glandular or gland-like structures were often seen among the small nests (7/7). There were frequently areas with loose, edematous stroma, and the tumor cells exhibited reticular, trabecular, or single cell arrangements (6/7). Focal hemorrhage was also commonly present in both compact and loose areas (5/7). In addition, focally cystic formation and ossification occurred in the compact area of one case and in the loose area of another case. The tumor cells in LOT showed intermediate cytologic characteristics between RO and chRCC, including abundantly eosinophilic granular cytoplasm, ovoid to round nuclei with mostly smooth contours, discernable small nucleoli (RO features), frequently delicate perinuclear halos, and occasional binucleation (chRCC features). The tumors were typically CK7-positive and CD117-negative (7/7), and variable staining for PAX8 (5/7), P504s (2/7), and vimentin (1/7). They were negative for CK20, CD10 and FOXI1. All tumors retained SDHB immunostaining. Conclusions: LOT is a rare and indolent oncocytic renal tumor with homogeneously intermediate cytologic features between RO and chRCC. There are some clinicopathologic overlaps between LOT and sporadic HOCT. The distinctive morphology and immunophenotype of LOT suggest that it is potentially a distinct tumor entity.
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Affiliation(s)
- B Xie
- Department of Pathology, Xiangya Hospital, Central South University, Changsha 410078, China
| | - L C Cheng
- Department of Pathology, Xiangya Hospital, Central South University, Changsha 410078, China
| | - G L Yin
- Department of Pathology, Xiangya Hospital, Central South University, Changsha 410078, China
| | - B A Liu
- Department of Pathology, Xiangya Hospital, Central South University, Changsha 410078, China
| | - Z L Hu
- Department of Pathology, Xiangya Hospital, Central South University, Changsha 410078, China
| | - K Tong
- Department of Pathology, Bishan Hospital of Chongqing Medical University, Chongqing 402760, China
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13
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Tong K, Har C, Kennedy H, Davoren M. Decision-making capacity regarding healthcare, welfare and finances in a secure forensic setting. Eur Psychiatry 2022. [PMCID: PMC9564983 DOI: 10.1192/j.eurpsy.2022.888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
Introduction Impairment in decision-making capacity is a serious consequence of executive dysfunction secondary to serious mental disorders like schizophrenia. Functional mental capacity (FMC) refers to an individual’s ability to make and communicate legally competent decisions autonomously. Studies have shown that FMC is dependent on severity of psychosis and can improve with treatment. Objectives To ascertain the correlation between the scores on a structured judgement tool, namely the Dundrum Capacity Ladders (DCL) with level of acuity of treatment setting and length of stay in a secure forensic hospital. Methods Sixty-two patients were interviewed using the DCL across three domains – healthcare, welfare and finances. Correlation between DCL scores, length of hospital stay and level of acuity of treatment setting was assessed. Results As patients moved from higher to lower dependency wards, mean DCL score increased, indicating a higher level of capacity. Patients in high dependency wards were most impaired while those in the low dependency wards performed significantly better (rs=0.472, p<0.001). The longer the patients stayed in the hospital, up until five years, the higher the mean welfare domain score (rs=0.402, p=0.011) and mean DCL score (rs=0.376, p=0.018). Beyond five years of hospital stay, those who had lower DCL scores and did not improve had longer length of stay. Conclusions Patients’ FMC improve as they progress from high to low level of acuity of treatment setting. However, this is dependent on the length of hospital stay. FMC may be a measure of recovery in the forensic setting. Disclosure No significant relationships.
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14
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Tong K, Gibbons A, Byrne O, Conlon T, Kennedy H, Davoren M. Zero violence or zero seclusion. Which is more acceptable in our hospitals? Eur Psychiatry 2022. [PMCID: PMC9568153 DOI: 10.1192/j.eurpsy.2022.1539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction There is an established association between serious mental illness and violence. Secure forensic psychiatric services provide care and treatment to mentally disordered offenders. The majority of patients in forensic services suffer from severe mental illnesses such as schizophrenia, with co-morbid polysubstance abuse and maladaptive personality traits. Psychiatric services are under significant pressure to reduce the use of seclusion and restrictive practices, whilst mandated to provide safe environments for patients and staff. Objectives To determine the number and characteristics of violent incidents in a secure forensic hospital in Ireland. Methods A retrospective review of all incidents in Central Mental Hospital, Ireland between 1st March 2019 and 31st August 2021 was completed. Incidents were categorised into physical assaults and other violent incidents. Demographic measures and measures of violence risk (HCR-20), functioning (GAF), programme completion and recovery (DUNDRUM tool) were collated. Results A total of 321 incidents took place during the period examined, of which 47 (14.6%) involved physical assaults perpetrated by patients. Between March 2020 and August 2021, numbers of assaults increased by 50% and 78% compared to the preceding six-month period respectively. The majority of assaults were committed by a relatively small group of patients. Victims of assaults were more likely to be patients (n=27, 57.4%) and more likely to be males (n=43, 91.9%). Conclusions Physical assaults and other violent incidents happen in forensic and general psychiatric units. Restrictive practices, used in accordance with the law, are necessary at times to prevent serious harm to patients and staff in psychiatric hospitals. Disclosure No significant relationships.
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15
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Li J, Chu J, Zhang R, Hu H, Tong K, Li J. Biomimetic navigation system using a polarization sensor and a binocular camera. J Opt Soc Am A Opt Image Sci Vis 2022; 39:847-854. [PMID: 36215446 DOI: 10.1364/josaa.453318] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 03/25/2022] [Indexed: 06/16/2023]
Abstract
With the vigorous development of vision techniques, simultaneous localization and mapping (SLAM) has shown the capability of navigating autonomous robots in global-navigation-satellite-system-denied environments. However, the long-term robust navigation of lightweight autonomous robots in outdoor environments with complex interferences, such as illumination change, dynamic objects, and electromagnetic interference, is still a great challenge. In this paper, a polarization sensor-aided SLAM (POL-SLAM) that can provide absolute heading constraints for pure SLAM is proposed. POL-SLAM is a lightweight, tightly coupled system consisting of a polarization sensor and binocular camera. By means of an initialization that uses a polarization sensor, an absolute heading angle for the entire map is designed. Additionally, an algorithm to eliminate mismatching points using the matching point vector is proposed. The objective function of bundle adjustment is then deduced according to the re-projection error and polarization sensor. The vehicle test shows that the yaw and trajectory accuracies of POL-SLAM are significantly improved compared to pure SLAM. The yaw and trajectory accuracies are increased by 43.1% and 36.6%, respectively. These results indicate that the proposed POL-SLAM can improve the reliability and robustness of pure SLAM and can be used in lightweight autonomous robots in outdoor environments.
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16
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Duan Y, Gao N, Sipra AT, Tong K, Quan C. Characterization of heavy metals and oil components in the products of oily sludge after hydrothermal treatment. J Hazard Mater 2022; 424:127293. [PMID: 34600372 DOI: 10.1016/j.jhazmat.2021.127293] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 09/03/2021] [Accepted: 09/17/2021] [Indexed: 06/13/2023]
Abstract
In this study, the method combining hydrothermal treatment (HT) and in-situ mechanical compression (MC) is used to treat oily sludge. The possible transfer and reaction pathways of different oil components during the process of HT&MC were investigated. In addition, the leaching toxicity, distribution, and risk of heavy metals in oily sludge treated in different temperatures and residence times were evaluated. The results revealed that siloxane and heavy oil components are left in the solid residue, and the light oils and oils with hydrophilic groups are transferred to hydrothermal fluids. The content of Cd, Cr, Pb, and Zn in form of F4 (residual) in the solid residue obtained at a hydrothermal temperature of 240 °C and residence time of 60 min increased by 7.37%, 1.21%, 3.06%, and 9.97%. This reduced the biological availability and environmental risk of heavy metals in the treated oily sludge. Meanwhile, the result of FT-IR illustrated an increase in hydroxyl groups of alcohols, phenols and organic acids, which have a beneficial effect on the adsorption of heavy metals and other pollutants. All results indicated that HT&MC might be a suitable pretreatment method for the stabilization of heavy metals in oily sludge.
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Affiliation(s)
- Yihang Duan
- School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Ningbo Gao
- School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
| | - Ayesha Tariq Sipra
- School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Kun Tong
- State Key Laboratory of Petroleum Pollution Control, Beijing 102206, China
| | - Cui Quan
- School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China
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17
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Liu YY, Liu L, Zhu L, Yang X, Tong K, You Y, Yang L, Gao Y, Li X, Chen DS, Hao JR, Sun N, Gao C. Corrigendum to 'dCA1-NAc shell glutamatergic projection mediates context-induced memory recall of morphine' [Pharmacol. Res. 172 (2021) 105857]. Pharmacol Res 2022; 175:106044. [PMID: 34974966 DOI: 10.1016/j.phrs.2021.106044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yue-Ying Liu
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Le Liu
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Lei Zhu
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Xiu Yang
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Kun Tong
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Yue You
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Li Yang
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Yin Gao
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Xu Li
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Di-Shi Chen
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Jing-Ru Hao
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Nan Sun
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Can Gao
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China.
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18
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Wei L, Song Y, Tong K, Yuan S, Xie S, Shi L, Jia X, Geng X, Guo H. Compound Cleaning Agent for Oily Sludge from Experiments and Molecular Simulations. ACS Omega 2021; 6:33300-33309. [PMID: 34926882 PMCID: PMC8674908 DOI: 10.1021/acsomega.1c02286] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 11/05/2021] [Indexed: 06/14/2023]
Abstract
This paper reported a new oily sludge compound cleaning agent formula, which used a combination of molecular simulation and experimental methods to study its interfacial formation energy (IFE), and exciting results were obtained. From a total of 24 surfactants in five categories, sodium silicate (Na2SiO3), sodium dodecylbenzene sulfonate, and fatty alcohol polyoxyethylene polyoxypropylene ether (JFC-SF) were screened out because of their excellent washing oil effect. Under a reasonable orthogonal system, when the mass ratio of the three surfactants was 3:1:1, the oil desorption effect was the best, the oil residual rate could reach 2.13%, and the oil removal efficiency could reach 93.53%. Verified by the molecular dynamics simulation module, the absolute value of the interface binding energy was the largest at this compound ratio, which was 465.71 kcal/mol. More importantly, we have discussed in depth the mechanism of adsorption and permeation of oily sludge by cleaning agents. Through single-factor influence experiments, the following optimized working condition parameters of the cleaning agent were determined: cleaning conditions with an agent content of 4%, a temperature of 70 °C, a stirring speed of 400 rpm, a cleaning time of 30 min, and a liquid-solid ratio (L/S) of 4:1. The research results laid the foundation for resource utilization, harmlessness, and reduction of oily sludge in the Liaohe oilfield.
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Affiliation(s)
- Lixin Wei
- State
Key Laboratory of Petroleum Pollution Control, CNPC Research Institute of Safety & Environment Technology, Beijing 100000, China
- Department
of Environment Technology, CNPC Research
Institute of Safety & Environment Technology, Beijing 100000, China
- School
of Petroleum Engineering, Northeast Petroleum
University, Daqing 163318, China
| | - Yang Song
- School
of Petroleum Engineering, Northeast Petroleum
University, Daqing 163318, China
| | - Kun Tong
- State
Key Laboratory of Petroleum Pollution Control, CNPC Research Institute of Safety & Environment Technology, Beijing 100000, China
- Department
of Environment Technology, CNPC Research
Institute of Safety & Environment Technology, Beijing 100000, China
| | - Shiling Yuan
- State
Key Laboratory of Petroleum Pollution Control, CNPC Research Institute of Safety & Environment Technology, Beijing 100000, China
- Department
of Environment Technology, CNPC Research
Institute of Safety & Environment Technology, Beijing 100000, China
- School
of Chemistry and Chemical Engineering, Shandong
University, Jinan 250013, China
| | - Shuixiang Xie
- State
Key Laboratory of Petroleum Pollution Control, CNPC Research Institute of Safety & Environment Technology, Beijing 100000, China
- Department
of Environment Technology, CNPC Research
Institute of Safety & Environment Technology, Beijing 100000, China
| | - Lijun Shi
- School
of Petroleum Engineering, Northeast Petroleum
University, Daqing 163318, China
| | - Xinlei Jia
- School
of Petroleum Engineering, Northeast Petroleum
University, Daqing 163318, China
- College
of Chemical Engineering and Safety, Binzhou
University, Binzhou 256600, China
| | - Xiaoheng Geng
- State
Key Laboratory of Petroleum Pollution Control, CNPC Research Institute of Safety & Environment Technology, Beijing 100000, China
- Department
of Environment Technology, CNPC Research
Institute of Safety & Environment Technology, Beijing 100000, China
- College
of Chemical Engineering and Safety, Binzhou
University, Binzhou 256600, China
| | - Haiying Guo
- State
Key Laboratory of Petroleum Pollution Control, CNPC Research Institute of Safety & Environment Technology, Beijing 100000, China
- Department
of Environment Technology, CNPC Research
Institute of Safety & Environment Technology, Beijing 100000, China
- College
of Chemical Engineering and Safety, Binzhou
University, Binzhou 256600, China
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19
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Liu YY, Liu L, Zhu L, Yang X, Tong K, You Y, Yang L, Gao Y, Li X, Chen DS, Hao JR, Sun N, Gao C. dCA1-NAc shell glutamatergic projection mediates context-induced memory recall of morphine. Pharmacol Res 2021; 172:105857. [PMID: 34461223 DOI: 10.1016/j.phrs.2021.105857] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 07/27/2021] [Accepted: 08/24/2021] [Indexed: 11/25/2022]
Abstract
Opioid relapse is generally caused by the recurrence of context-induced memory reinstatement of reward. However, the internal mechanisms that facilitate and modify these processes remain unknown. One of the key regions of the reward is the nucleus accumbens (NAc) which receives glutamatergic projections from the dorsal hippocampus CA1 (dCA1). It is not yet known whether the dCA1 projection to the NAc shell regulates the context-induced memory recall of morphine. Here, we used a common model of addiction-related behavior conditioned place preference paradigm, combined with immunofluorescence, chemogenetics, optogenetics, and electrophysiology techniques to characterize the projection of the dCA1 to the NAc shell, in context-induced relapse memory to morphine. We found that glutamatergic neurons of the dCA1 and gamma aminobutyric acidergic (GABA) neurons of the NAc shell are the key brain areas and neurons involved in the context-induced reinstatement of morphine memory. The dCA1-NAc shell glutamatergic input pathway and the excitatory synaptic transmission of the dCA1-NAc shell were enhanced via the α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor (AMPAR) when mice were re-exposed to environmental cues previously associated with drug intake. Furthermore, chemogenetic and optogenetic inactivation of the dCA1-NAc shell pathway decreased the recurrence of long- and short-term morphine-paired context memory in mice. These results provided evidence that the dCA1-NAc shell glutamatergic projections mediated the context-induced memory recall of morphine.
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Affiliation(s)
- Yue-Ying Liu
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Le Liu
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Lei Zhu
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Xiu Yang
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Kun Tong
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Yue You
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Li Yang
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Yin Gao
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Xu Li
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Di-Shi Chen
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Jing-Ru Hao
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Nan Sun
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Can Gao
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China.
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Yang X, Li X, Liu L, Chen YH, You Y, Gao Y, Liu YY, Yang L, Tong K, Chen DS, Hao JR, Sun N, Zhao ZM, Gao C. Transferrin-Pep63-liposomes accelerate the clearance of Aβ and rescue impaired synaptic plasticity in early Alzheimer's disease models. Cell Death Discov 2021; 7:256. [PMID: 34548476 PMCID: PMC8455582 DOI: 10.1038/s41420-021-00639-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 08/19/2021] [Accepted: 08/27/2021] [Indexed: 11/11/2022] Open
Abstract
Alzheimer’s disease (AD) is characterized by aberrant accumulation of extracellular β-amyloid (Aβ) peptides in the brain. Soluble Aβ oligomers are thought to be the most neurotoxic species and are correlated with cognitive dysfunction in early AD. However, there is still no effective treatment so far. We determined that Pep63, a small peptide, had a neuroprotective effect on synaptic plasticity and memory in our previous study. Here, we developed novel and multifunctional liposomes targeting both Aβ oligomers and fibrils based on a liposome delivery system. Transferrin-Pep63-liposomes (Tf-Pep63-Lip), possessing the ability for blood-brain barrier targeting, were also incorporated with phosphatidic acid (PA) and loaded with neuroprotective Pep63. We discovered that administration of Tf-Pep63-Lip could significantly reduce the Aβ burden in the hippocampus, and improve cognitive deficits in 6-month-old APP/PS1 mice in the Morris-Water maze task and fear-conditioning test with the combined effects of PA and Pep63. Tf-Pep63-Lip could capture Aβ oligomers or fibrils and then facilitated microglial chemotaxis nearby for clearance. Simultaneously, Tf-Pep63-Lip hindered Aβ1-42 aggregation and disaggregated Aβ1-42 assembly due to multivalent PA-Aβ. Pep63 effectively inhibited the binding between EphB2 and Aβ oligomers after release from liposomes and rescued NMDA receptors trafficking, the basis of synaptic plasticity. No side effects were observed in either APP/PS1 or wild-type mice, indicating that Tf-Pep63-Lip might be safe under the dosing regimen used in our experiment. Taken together, our results suggested that Tf-Pep63-Lip may serve as a safe and efficient agent for AD combination therapy.
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Affiliation(s)
- Xiu Yang
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, 221004, Xuzhou, Jiangsu, China
| | - Xu Li
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, 221004, Xuzhou, Jiangsu, China
| | - Le Liu
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, 221004, Xuzhou, Jiangsu, China
| | - Yuan-Hao Chen
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, 221004, Xuzhou, Jiangsu, China
| | - Yue You
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, 221004, Xuzhou, Jiangsu, China
| | - Yin Gao
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, 221004, Xuzhou, Jiangsu, China
| | - Yue-Ying Liu
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, 221004, Xuzhou, Jiangsu, China
| | - Li Yang
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, 221004, Xuzhou, Jiangsu, China
| | - Kun Tong
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, 221004, Xuzhou, Jiangsu, China
| | - Di-Shi Chen
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, 221004, Xuzhou, Jiangsu, China
| | - Jing-Ru Hao
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, 221004, Xuzhou, Jiangsu, China
| | - Nan Sun
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, 221004, Xuzhou, Jiangsu, China
| | - Zi-Ming Zhao
- Jiangsu Province Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, 221004, Xuzhou, Jiangsu, China.
| | - Can Gao
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, 221004, Xuzhou, Jiangsu, China.
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21
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Mi Y, Tong K, Zhu G, Zhang X, Liu X, Si Y. Surface spraying of anthocyanin through antioxidant defense and subcellular sequestration to decrease Cd accumulation in rice (Oryza sativa L.) grains in a lead-zinc mine area. Environ Geochem Health 2021; 43:1855-1866. [PMID: 33159231 DOI: 10.1007/s10653-020-00763-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Accepted: 10/25/2020] [Indexed: 06/11/2023]
Abstract
As an important class of flavonoids, anthocyanin has been used to enhance plant-defensive mechanisms against heavy metal stress. However, there are few available reports regarding surface spraying of anthocyanin for reduction of Cd poisoning in rice and its practical applications in paddy fields. After rice growing, measurements were taken of rice growth, pigments, the antioxidant system, thiol compounds, and distribution of Cd in rice tissues. The results showed that surface spraying anthocyanin could promote rice growth, and relative to the control, total chlorophyll significantly increased by 22.62% after surface spraying of 7.5 g L-1 anthocyanin. Simultaneously, Cd accumulation in rice grains was 0.17 ± 0.02 mg kg-1, which was significantly decreased by 46.88% relative to the control. In the pot experiment (40-day-old rice), treatment with 7.5 g L-1 anthocyanin resulted in decreases of ·O2-, H2O2, and malondialdehyde contents in rice leaves, while the activities of superoxide dismutase, peroxidase, catalase, and ascorbate peroxidase were increased by 59.10, 23.81, 41.75, and 9.39%, respectively. Meanwhile, contents of glutathione, ascorbic acid, non-protein thiols, and phytochelatins showed respective increases of 7.24, 14.49, 42.81, and 41.13% compared with the control value. Subcellular analysis revealed that surface spraying of anthocyanin increased organelle and soluble fractions of Cd in leaf cells. In conclusion, surface spraying of 7.5 g L-1 anthocyanin was mainly attributed to increased antioxidant activities and subcellular sequestration of Cd in organelles and soluble fractions in rice leaves to reduce Cd accumulation in rice grains in the field.
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Affiliation(s)
- Yazhu Mi
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, China
| | - Kun Tong
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, China
| | - Guangsen Zhu
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, China
| | - Xu Zhang
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, China
| | - Xiaohong Liu
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, China
| | - Youbin Si
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, China.
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Xie S, Ren W, Zhang M, Tong K, Wu B, Sun J, Liu X, Zhang Z. Response surface methodology study on electrochemical adsorption regeneration of water-based drilling fluid waste. SEP SCI TECHNOL 2020. [DOI: 10.1080/01496395.2019.1637891] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Shuixiang Xie
- State Key Laboratory of Petroleum Pollution Control, Beijing, China
- CNPC Research Institute of Safety and Environmental Technology, Beijing, China
| | - Wen Ren
- State Key Laboratory of Petroleum Pollution Control, Beijing, China
- CNPC Research Institute of Safety and Environmental Technology, Beijing, China
| | - Mingdong Zhang
- State Key Laboratory of Petroleum Pollution Control, Beijing, China
- CNPC Research Institute of Safety and Environmental Technology, Beijing, China
| | - Kun Tong
- State Key Laboratory of Petroleum Pollution Control, Beijing, China
- CNPC Research Institute of Safety and Environmental Technology, Beijing, China
| | - Baichun Wu
- State Key Laboratory of Petroleum Pollution Control, Beijing, China
- CNPC Research Institute of Safety and Environmental Technology, Beijing, China
| | - Jingwen Sun
- State Key Laboratory of Petroleum Pollution Control, Beijing, China
- CNPC Research Institute of Safety and Environmental Technology, Beijing, China
| | - Xiaohui Liu
- State Key Laboratory of Petroleum Pollution Control, Beijing, China
- CNPC Research Institute of Safety and Environmental Technology, Beijing, China
| | - Zhena Zhang
- State Key Laboratory of Petroleum Pollution Control, Beijing, China
- CNPC Research Institute of Safety and Environmental Technology, Beijing, China
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23
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Li Q, Tong K, Sun M, Yao M, Zhuang W, Pan Y, Chen X. The self-assembly of an imidazolium surfactant in an aprotic ionic liquid. 1. Comparison in aprotic and protic ionic liquids. Soft Matter 2020; 16:7246-7249. [PMID: 32726375 DOI: 10.1039/d0sm01246g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The aggregation behaviour of a cationic surfactant in an aprotic ionic liquid has been explored. Prolate micelles are formed at low surfactant concentrations, while a lamellar lyotropic liquid crystal phase is formed at high surfactant concentrations.
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Affiliation(s)
- Qintang Li
- School of Materials and Chemical Engineering, Xuzhou University of Technology, Xuzhou 221018, China.
| | - Kun Tong
- Beijing Institute of Aerospace Testing Technology & Beijing Key Laboratory of Research and Application for Aerospace Green Propellants, Beijing 100074, China
| | - Meng Sun
- Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan 250100, China.
| | - Meihuan Yao
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China and National United Engineering Laboratory for Advanced Bearing Tribology, Henan University of Science and Technology, Luoyang 471023, China
| | - Wenchang Zhuang
- School of Materials and Chemical Engineering, Xuzhou University of Technology, Xuzhou 221018, China.
| | - Yue Pan
- School of Materials and Chemical Engineering, Xuzhou University of Technology, Xuzhou 221018, China.
| | - Xiao Chen
- Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan 250100, China.
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24
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Tong Y, Tong K, Zhu Q, Wu Y, Yang Y, Zhang J, Hu P, Yan S. Cobalt Chloride Induced Apoptosis by Inhibiting GPC3 Expression via the HIF-1α/c-Myc Axis in HepG2 Cells. Onco Targets Ther 2019; 12:10663-10670. [PMID: 31824173 PMCID: PMC6901039 DOI: 10.2147/ott.s227215] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Accepted: 11/15/2019] [Indexed: 12/27/2022] Open
Abstract
Purpose To investigate the role of glypican-3 (GPC3) in cobalt chloride (CoCl2)-induced cell apoptosis in hepatocellular carcinoma. Methods HepG2 cells were treated with CoCl2 in the absence or presence of GPC3 plasmid transfection. Cell viability and apoptosis were assessed by MTT assay and flow cytometry, respectively. The expression of GPC3, hypoxia-inducible factor 1α (HIF-1α), c-myc, sp1, poly-ADP-ribose polymerase (PARP) and caspase-3 was determined by real-time PCR, Western blotting, and immunofluorescence after the cells were treated with different concentrations of CoCl2 or siRNA targeting HIF-1α. Results CoCl2 significantly inhibited the proliferation of HepG2 cells and induced apoptosis. Additionally, the expression of GPC3 mRNA and protein was decreased, and overexpression of GPC3 attenuated the tumour inhibiting effects. Further studies showed that CoCl2 increased the expression of HIF-1α while reducing the expression of sp1 and c-myc; knockdown of HIF-1α elevated the expression of GPC3, sp1, and c-myc. Conclusion CoCl2 inhibited the growth of HepG2 cells through downregulation of GPC3 expression via the HIF-1α/c-myc axis.
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Affiliation(s)
- Yaoyao Tong
- Department of Laboratory Medicine, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, People's Republic of China.,Hubei Key Laboratory of Wudang Local Chinese Medicine Research, School of Pharmaceutical Sciences, Hubei University of Medicine, Shiyan, Hubei, People's Republic of China
| | - Kun Tong
- Department of Laboratory Medicine, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, People's Republic of China.,Hubei Key Laboratory of Wudang Local Chinese Medicine Research, School of Pharmaceutical Sciences, Hubei University of Medicine, Shiyan, Hubei, People's Republic of China
| | - Qinghong Zhu
- Department of Laboratory Medicine, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, People's Republic of China
| | - Yuqin Wu
- Department of Central Operating Room, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, People's Republic of China
| | - Yi Yang
- Reproductive Medicine Centre, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, People's Republic of China
| | - Jicai Zhang
- Department of Laboratory Medicine, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, People's Republic of China
| | - Pei Hu
- Department of Laboratory Medicine, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, People's Republic of China.,Hubei Key Laboratory of Embryonic Stem Cell Research, Hubei University of Medicine, Shiyan, Hubei, People's Republic of China
| | - Shirong Yan
- Hubei Key Laboratory of Wudang Local Chinese Medicine Research, School of Pharmaceutical Sciences, Hubei University of Medicine, Shiyan, Hubei, People's Republic of China
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25
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Sun XY, Zheng T, Yang X, Liu L, Gao SS, Xu HB, Song YT, Tong K, Yang L, Gao Y, Wu T, Hao JR, Lu C, Ma T, Gao C. HDAC2 hyperexpression alters hippocampal neuronal transcription and microglial activity in neuroinflammation-induced cognitive dysfunction. J Neuroinflammation 2019; 16:249. [PMID: 31796106 PMCID: PMC6889553 DOI: 10.1186/s12974-019-1640-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 11/12/2019] [Indexed: 02/08/2023] Open
Abstract
Background Inflammation can induce cognitive dysfunction in patients who undergo surgery. Previous studies have demonstrated that both acute peripheral inflammation and anaesthetic insults, especially isoflurane (ISO), are risk factors for memory impairment. Few studies are currently investigating the role of ISO under acute peri-inflammatory conditions, and it is difficult to predict whether ISO can aggravate inflammation-induced cognitive deficits. HDACs, which are essential for learning, participate in the deacetylation of lysine residues and the regulation of gene transcription. However, the cell-specific mechanism of HDACs in inflammation-induced cognitive impairment remains unknown. Methods Three-month-old C57BL/6 mice were treated with single versus combined exposure to LPS injected intraperitoneally (i.p.) to simulate acute abdominal inflammation and isoflurane to investigate the role of anaesthesia and acute peripheral inflammation in cognitive impairment. Behavioural tests, Western blotting, ELISA, immunofluorescence, qRT-PCR, and ChIP assays were performed to detect memory, the expressions of inflammatory cytokines, HDAC2, BDNF, c-Fos, acetyl-H3, microglial activity, Bdnf mRNA, c-fos mRNA, and Bdnf and c-fos transcription in the hippocampus. Results LPS, but not isoflurane, induced neuroinflammation-induced memory impairment and reduced histone acetylation by upregulating histone deacetylase 2 (HDAC2) in dorsal hippocampal CaMKII+ neurons. The hyperexpression of HDAC2 in neurons was mediated by the activation of microglia. The decreased level of histone acetylation suppressed the transcription of Bdnf and c-fos and the expressions of BDNF and c-Fos, which subsequently impaired memory. The adeno-associated virus ShHdac2, which suppresses Hdac2 after injection into the dorsal hippocampus, reversed microglial activation, hippocampal glutamatergic BDNF and c-Fos expressions, and memory deficits. Conclusions Reversing HDAC2 in hippocampal CaMKII+ neurons exert a neuroprotective effect against neuroinflammation-induced memory deficits.
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Affiliation(s)
- Xiao-Yu Sun
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, 221004, Jiangsu, China.,Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Teng Zheng
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, 221004, Jiangsu, China.,Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China.,Department of Anesthesiology, the First Affiliated Hospital of Soochow University, Suzhou, 215006, Jiangsu, China
| | - Xiu Yang
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, 221004, Jiangsu, China.,Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Le Liu
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, 221004, Jiangsu, China.,Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Shen-Shen Gao
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, 221004, Jiangsu, China.,Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Han-Bing Xu
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, 221004, Jiangsu, China.,Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Yu-Tong Song
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, 221004, Jiangsu, China.,Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Kun Tong
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, 221004, Jiangsu, China.,Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Li Yang
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, 221004, Jiangsu, China.,Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Ya Gao
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, 221004, Jiangsu, China.,Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Tong Wu
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, 221004, Jiangsu, China.,Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Jing-Ru Hao
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, 221004, Jiangsu, China.,Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Chen Lu
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, 221004, Jiangsu, China.,Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Tao Ma
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, 221004, Jiangsu, China.,Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Can Gao
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, 221004, Jiangsu, China. .,Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China.
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Ma M, Li X, Tong K, Cheng J, Yu Z, Ren F, Zhong B, Shi W. Discovery of Biased Mu‐Opioid Receptor Agonists for the Treatment of Pain. ChemMedChem 2019; 15:155-161. [DOI: 10.1002/cmdc.201900575] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 11/06/2019] [Indexed: 12/19/2022]
Affiliation(s)
- Mengjun Ma
- State Key Laboratory of Toxicology and Medical CountermeasuresBeijing Institute of Pharmacology & Toxicology 27 Tai-Ping Road Beijing 100850 China
| | - Xiang Li
- State Key Laboratory of Toxicology and Medical CountermeasuresBeijing Institute of Pharmacology & Toxicology 27 Tai-Ping Road Beijing 100850 China
| | - Kun Tong
- State Key Laboratory of Toxicology and Medical CountermeasuresBeijing Institute of Pharmacology & Toxicology 27 Tai-Ping Road Beijing 100850 China
| | - Jingchao Cheng
- State Key Laboratory of Toxicology and Medical CountermeasuresBeijing Institute of Pharmacology & Toxicology 27 Tai-Ping Road Beijing 100850 China
| | - Zixing Yu
- State Key Laboratory of Toxicology and Medical CountermeasuresBeijing Institute of Pharmacology & Toxicology 27 Tai-Ping Road Beijing 100850 China
| | - Fengxia Ren
- State Key Laboratory of Toxicology and Medical CountermeasuresBeijing Institute of Pharmacology & Toxicology 27 Tai-Ping Road Beijing 100850 China
| | - Bohua Zhong
- State Key Laboratory of Toxicology and Medical CountermeasuresBeijing Institute of Pharmacology & Toxicology 27 Tai-Ping Road Beijing 100850 China
| | - Weiguo Shi
- State Key Laboratory of Toxicology and Medical CountermeasuresBeijing Institute of Pharmacology & Toxicology 27 Tai-Ping Road Beijing 100850 China
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Turan O, Bielecki P, Perera V, Lorkowski M, Covarrubias G, Tong K, Yun A, Loutrianakis G, Raghunathan S, Park Y, Moon T, Cooley S, Dixit D, Griswold M, Ghaghada K, Peiris P, Rich J, Karathanasis E. Treatment of glioblastoma using multicomponent silica nanoparticles. Adv Ther (Weinh) 2019; 2:1900118. [PMID: 32953978 PMCID: PMC7500584 DOI: 10.1002/adtp.201900118] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Indexed: 01/12/2023]
Abstract
Glioblastomas (GBMs) remain highly lethal. This partially stems from the presence of brain tumor initiating cells (BTICs), a highly plastic cellular subpopulation that is resistant to current therapies. In addition to resistance, the blood-brain barrier limits the penetration of most drugs into GBMs. To effectively deliver a BTIC-specific inhibitor to brain tumors, we developed a multicomponent nanoparticle, termed Fe@MSN, which contains a mesoporous silica shell and an iron oxide core. Fibronectin-targeting ligands directed the nanoparticle to the near-perivascular areas of GBM. After Fe@MSN particles deposited in the tumor, an external low-power radiofrequency (RF) field triggered rapid drug release due to mechanical tumbling of the particle resulting in penetration of high amounts of drug across the blood-brain tumor interface and widespread drug delivery into the GBM. We loaded the nanoparticle with the drug 1400W, which is a potent inhibitor of the inducible nitric oxide synthase (iNOS). It has been shown that iNOS is preferentially expressed in BTICs and is required for their maintenance. Using the 1400W-loaded Fe@MSN and RF-triggered release, in vivo studies indicated that the treatment disrupted the BTIC population in hypoxic niches, suppressed tumor growth and significantly increased survival in BTIC-derived GBM xenografts.
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Affiliation(s)
- O. Turan
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio
| | - P.A. Bielecki
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio
| | - V. Perera
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio
| | - M. Lorkowski
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio
| | - G. Covarrubias
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio
| | - K. Tong
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio
| | - A. Yun
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio
| | - Georgia Loutrianakis
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio
| | - S. Raghunathan
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio
| | - Y. Park
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio
| | - T. Moon
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio
| | - S. Cooley
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio
| | - D. Dixit
- Department of Neurosciences, University of California, San Diego, California
| | - M.A. Griswold
- Department of Radiology, Case Western Reserve University, Cleveland, Ohio
- Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, Ohio
| | - K.B. Ghaghada
- Edward B. Singleton Department of Pediatric Radiology, Texas Children’s Hospital, Houston, Texas
| | - P.M. Peiris
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio
| | - J.N. Rich
- Department of Neurosciences, University of California, San Diego, California
| | - E. Karathanasis
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio
- Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, Ohio
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Wu T, Sun XY, Yang X, Liu L, Tong K, Gao Y, Hao JR, Cao J, Gao C. Histone H3K9 Trimethylation Downregulates the Expression of Brain-Derived Neurotrophic Factor in the Dorsal Hippocampus and Impairs Memory Formation During Anaesthesia and Surgery. Front Mol Neurosci 2019; 12:246. [PMID: 31708739 PMCID: PMC6823536 DOI: 10.3389/fnmol.2019.00246] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Accepted: 09/24/2019] [Indexed: 01/01/2023] Open
Abstract
Brain-derived neurotrophic factor (BDNF) is essential for cognitive and memory functions. Abnormal BDNF expression in the central nervous system may impair these functions. Anaesthesia and surgery can induce perioperative neurocognitive disorders (PND). Clinical studies show that BDNF expression is decreased in patients presenting with cognitive impairment after anaesthesia and surgery. However, the molecular mechanism is still unclear. Epigenetic regulation plays an important role in cognition. The hypermethylation of H3K9 is crucial for transcriptional silencing and the onset of cognitive disorders. Here, we hypothesised that H3K9 trimethylation repressed BDNF expression and impaired memory formation or recall during anaesthesia and surgery. Laparotomy under isoflurane inhalation anaesthesia, behavioural tests, Western blotting, quantitative real-time reverse-transcription polymerase chain reaction (qRT-PCR), chromatin immunoprecipitation (ChIP), and immunohistochemistry were used in this study. BDNF expression was decreased in the hippocampus after anaesthesia and surgery. Cognitive impairment affected memory formation but not recall. The trimethylation of H3K9 downregulated BDNF expression. The overexpression of BDNF or use of exogenous BDNF improved the impairment of memory formation caused by anaesthesia and surgery. Therefore, inhibiting H3K9 trimethylation and increasing the expression of BDNF may help prevent PND in the clinical setting.
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Affiliation(s)
- Tong Wu
- Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, China.,Department of Anesthesia, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Xiao-Yu Sun
- Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, China
| | - Xiu Yang
- Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, China
| | - Le Liu
- Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, China
| | - Kun Tong
- Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, China
| | - Ya Gao
- Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, China
| | - Jing-Ru Hao
- Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, China
| | - Jing Cao
- Department of Anesthesia, Xuzhou Central Hospital, The Xuzhou Clinical College of Xuzhou Medical University, Xuzhou, China
| | - Can Gao
- Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, China
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Li Q, Tong K, Qiu J, Yan M, Tian Q, Chen X, Yue X. Molecular packing of surface active ionic liquids in a deep eutectic solvent: a small angle X-ray scattering (SAXS) study. Soft Matter 2019; 15:5060-5066. [PMID: 31180406 DOI: 10.1039/c9sm00760a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [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
During the past decade, deep eutectic solvents (DESs) have shown promising application in the self-assembly of surfactants. Various aggregates such as micelles, vesicles, lyotropic liquid crystals, microemulsions and gels have been reported. In this research, the phase behaviours of imidazolium surface active ionic liquids (SAILs) CnmimBr (n = 12, 14, 16) were investigated in ChG. With the help of small angle X-ray scattering (SAXS), the types and structure parameters of aggregates were determined. The molecular packing of SAILs was influenced by the solvophobic chain length, surfactant concentration, temperature and solvent, accounting for their different aggregation behaviours. This study would give a good description of the molecular packing of surfactants in DESs.
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Affiliation(s)
- Qintang Li
- State Key Laboratory of Environment-friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621000, China.
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Turan O, Bielecki P, Perera V, Lorkowski M, Covarrubias G, Tong K, Yun A, Rahmy A, Ouyang T, Raghunathan S, Gopalakrishnan R, Griswold MA, Ghaghada KB, Peiris PM, Karathanasis E. Delivery of drugs into brain tumors using multicomponent silica nanoparticles. Nanoscale 2019; 11:11910-11921. [PMID: 31187845 PMCID: PMC7776621 DOI: 10.1039/c9nr02876e] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Glioblastomas are highly lethal cancers defined by resistance to conventional therapies and rapid recurrence. While new brain tumor cell-specific drugs are continuously becoming available, efficient drug delivery to brain tumors remains a limiting factor. We developed a multicomponent nanoparticle, consisting of an iron oxide core and a mesoporous silica shell that can effectively deliver drugs across the blood-brain barrier into glioma cells. When exposed to alternating low-power radiofrequency (RF) fields, the nanoparticle's mechanical tumbling releases the entrapped drug molecules from the pores of the silica shell. After directing the nanoparticle to target the near-perivascular regions and altered endothelium of the brain tumor via fibronectin-targeting ligands, rapid drug release from the nanoparticles is triggered by RF facilitating wide distribution of drug delivery across the blood-brain tumor interface.
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Affiliation(s)
- O Turan
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio, USA.
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Chen Z, Li D, Tong K, Chen Z, Chen H, Chen Q, Xu Y. Static decontamination of oil-based drill cuttings with pressurized hot water using response surface methodology. Environ Sci Pollut Res Int 2019; 26:7216-7227. [PMID: 30656584 DOI: 10.1007/s11356-018-04102-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2018] [Accepted: 12/27/2018] [Indexed: 06/09/2023]
Abstract
Separating organic pollutants from oil-based drill cuttings (OBDC) is the current trend for its safe disposal. In this study, pressurized hot water extraction (PHWE) was adapted to decontaminate OBDC for the first time. Two typical OBDC samples, i.e., diesel-based drill cuttings (OBDC-A) and white oil-based drill cuttings (OBDC-B), were statically extracted in a homemade batch autoclave. Response surface methodology (RSM) with a central composite design (CCD) was applied to investigate the effects and interactive effects of three independent operating parameters (temperature, extraction time, and water volume) and to ultimately optimize the PHWE process. The results suggested that temperature is the dominant parameter, followed by water volume and extraction time. Interactive effects among the three parameters are present in the PHWE of OBDC-A but absent in the PHWE of OBDC-B. The suitable conditions for the effective PHWE of OBDC-A were found to be a temperature of 284-300 °C, water volume of 15-35 ml, and extraction time of 20-60 min. The corresponding conditions were 237-300 °C, 15-35 ml, and 20-60 min for the PHWE of OBDC-B. These different phenomena are caused by the different characteristics of the two OBDC samples. All of the polynomial models obtained from the RSM experiments are very valid and can adequately describe the relationship among the three independent operating parameters and responses. The experimental results also confirmed that PHWE is a more efficient separation technique for decontaminating OBDC than single organic solvent extraction or low-temperature thermal desorption because PHWE integrates the advantages of both these processes.
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Affiliation(s)
- Zhong Chen
- State Key Laboratory of Petroleum Pollution Control, Beijing, 102206, China
- Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China
| | - Dongyuan Li
- School of Petroleum Engineering, Southwest Petroleum University, Chengdu, 610500, China
| | - Kun Tong
- State Key Laboratory of Petroleum Pollution Control, Beijing, 102206, China
| | - Zeliang Chen
- Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China
| | - Hongzhen Chen
- Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China
| | - Qiao Chen
- Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China
| | - Yuanjian Xu
- Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China.
- Environmentally-Benign Chemical Process Research Center, Chongqing Institute of Green and Intelligent Technology (CIGIT), Chinese Academy of Sciences, No. 266 Fangzheng Avenue, Beibei District, Chongqing, 400714, China.
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Gatza ML, Angus SP, Khella CA, Tong K, Verzi M, Mehta GA. Abstract P2-03-03: BRG1-SOX4 mediates a novel and essential signaling network that activates PI3K/Akt signaling in TNBC. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p2-03-03] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background:
Triple negative (TNBC) breast cancer, which is largely synonymous with the basal-like molecular subtype, is an aggressive malignancy that accounts for nearly 1 in 4 breast cancer related deaths and disproportionately affects younger women and women of African American decent. Given the lack of drug-able targets expressed by TNBC tumors, few therapeutic options exist beyond currently utilized cytotoxic therapies, and the overall prognosis for these patients remains poor. While TNBC tumors are characterized by high PI3K signaling, clinical trials targeting this pathway have had limited success. Therefore, identifying mechanisms driving key oncogenic pathways, including PI3K, is paramount to understanding the transformation process and enabling the development of rational, personalized therapeutic regimens.
Methods:
We utilized a PI3K gene expression signature as a conceptual framework to analyze genome-wide mRNA expression and DNA copy number data from human breast tumors to identify genetic drivers of PI3K/Akt signaling. Kinome profiling was used to identify changes in the drug-able kinome regulated by these genes and in vitro studies were used to delineate mechanisms by which identified genes mediate oncogenic PI3K signaling in TNBC.
Results:
Integrative proteogenomic analyses of orthogonal genome-wide data from ˜3,000 human tumors from the TCGA and METABRIC studies identified amplification and overexpression of the oncogenic transcription factor SOX4 as well as the SWI/SNF ATPase BRG1 in tumors with high PI3K activity. These alterations were predominantly expressed in TNBC or basal-like breast tumors. Chromatin immunoprecipitation followed by DNA sequencing (ChIPseq) as well as shRNA-based studies confirmed that BRG1 regulates SOX4 expression in TNBC cell lines. Analyses of data from a genome-wide RNA interference (RNAi) screen in 27 breast cancer cell lines further indicated that SOX4 is essential in cell lines with high PI3K activity and this was confirmed by colony formation and cell proliferation assays. Importantly, in vitro analyses confirmed that both BRG1 and SOX4 regulate Akt phosphorylation and down-stream signaling. Profiling of the drug-able kinome in SOX4 depleted cell lines compared to control cells using Multiplexed kinase Inhibitor Beads couple with quantitative Mass Spectrometry (MIB/MS) identified 21 drug-able kinases regulated by SOX4 activity including TGFBR2 which has been previously shown to regulate PI3K activity. RNA sequencing (RNAseq) and RT-PCR analyses confirmed that SOX4 mediates TGFBR2 mRNA levels and co-immunoprecipitation experiments in conjunction with ChIP assays demonstrated that BRG1 and SOX4 form a complex at the TGFBR2 promoter and enhancer region to regulate TGFBR2 expression.
Conclusions:
In this study, we demonstrated that BRG1-SOX4 constitutes a novel and essential signaling pathway which promotes PI3K/Akt activity through TGFβ signaling in TNBC/basal-like breast cancer and leads to activation of additional, drug-able kinases. Given the essentiality of BRG1 and SOX4, our data suggest that targeting this interaction and/or the down-stream components of this pathway may represent a novel therapeutic strategy in TNBC.
Citation Format: Gatza ML, Angus SP, Khella CA, Tong K, Verzi M, Mehta GA. BRG1-SOX4 mediates a novel and essential signaling network that activates PI3K/Akt signaling in TNBC [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P2-03-03.
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Affiliation(s)
- ML Gatza
- Rutgers Cancer Institute, New Brunswick, NJ; Lineberger Comprehansive Cancer Center, University of North Carolina, Chapel Hill, NC
| | - SP Angus
- Rutgers Cancer Institute, New Brunswick, NJ; Lineberger Comprehansive Cancer Center, University of North Carolina, Chapel Hill, NC
| | - CA Khella
- Rutgers Cancer Institute, New Brunswick, NJ; Lineberger Comprehansive Cancer Center, University of North Carolina, Chapel Hill, NC
| | - K Tong
- Rutgers Cancer Institute, New Brunswick, NJ; Lineberger Comprehansive Cancer Center, University of North Carolina, Chapel Hill, NC
| | - M Verzi
- Rutgers Cancer Institute, New Brunswick, NJ; Lineberger Comprehansive Cancer Center, University of North Carolina, Chapel Hill, NC
| | - GA Mehta
- Rutgers Cancer Institute, New Brunswick, NJ; Lineberger Comprehansive Cancer Center, University of North Carolina, Chapel Hill, NC
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Tang X, Tong K, Zhu L, Fu G, Chang W, Zhou T, Zhang Z, Tong L, Zhang L, Shi Y. Di-2-ethylhexyl phthalate induced oxidative damage involving FasL-associated apoptotic pathway in mouse spermatogenic GC-2spd cells. Mol Cell Toxicol 2017. [DOI: 10.1007/s13273-016-0042-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Abstract
An efficient and rapid protocol for chloroamidation of indoles with sulfonamides and aqueous NaClO has been developed. The reaction completes in less than half an hour at room temperature without any transition metals.
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Affiliation(s)
- Xiaodong Liu
- State Key Laboratory of Analytical Chemistry for Life Science
- Jiangsu Key Laboratory of Advanced Organic Materials
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
| | - Kun Tong
- State Key Laboratory of Analytical Chemistry for Life Science
- Jiangsu Key Laboratory of Advanced Organic Materials
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
| | - Ai Hua Zhang
- Institute of Functional Biomolecules
- State Key Laboratory of Pharmaceutical Biotechnology
- Nanjing University
- Nanjing 210023
- China
| | - Ren Xiang Tan
- Institute of Functional Biomolecules
- State Key Laboratory of Pharmaceutical Biotechnology
- Nanjing University
- Nanjing 210023
- China
| | - Shouyun Yu
- State Key Laboratory of Analytical Chemistry for Life Science
- Jiangsu Key Laboratory of Advanced Organic Materials
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
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Zhu J, Huang A, Ma H, Ma Y, Tong K, Ji S, Bao S, Cao X, Jin P. Composite Film of Vanadium Dioxide Nanoparticles and Ionic Liquid-Nickel-Chlorine Complexes with Excellent Visible Thermochromic Performance. ACS Appl Mater Interfaces 2016; 8:29742-29748. [PMID: 27739664 DOI: 10.1021/acsami.6b11202] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Vanadium dioxide (VO2), as a typical thermochromic material used in smart windows, is always limited by its weaker solar regulation efficiency (ΔTsol) and lower luminous transmittance (Tlum). Except for common approaches such as doping, coating, and special structure, compositing is another effective method. The macroscopic thermochromic (from colorless to blue) ionic liquid-nickel-chlorine (IL-Ni-Cl) complexes are selected in this paper to be combined with VO2 nanoparticles forming a composite film. This novel scheme demonstrates outstanding optical properties: ΔTsol = 26.45% and Tlum,l = 66.44%, Tlum,h = 43.93%. Besides, the addition of the IL-Ni-Cl complexes endows the film with an obvious color change from light brown to dark green as temperature rises. This splendid visible thermochromic performance makes the composite film superior in function exhibiting and application of smart windows.
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Affiliation(s)
- Jingting Zhu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences , Dingxi 1295, Changning, Shanghai, 200050, China
- University of Chinese Academy of Sciences , Yuquan 19, Shijingshan, Beijing, 100049, China
| | - Aibin Huang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences , Dingxi 1295, Changning, Shanghai, 200050, China
- University of Chinese Academy of Sciences , Yuquan 19, Shijingshan, Beijing, 100049, China
| | - Haibin Ma
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences , Dingxi 1295, Changning, Shanghai, 200050, China
- University of Chinese Academy of Sciences , Yuquan 19, Shijingshan, Beijing, 100049, China
| | - Yining Ma
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences , Dingxi 1295, Changning, Shanghai, 200050, China
- University of Chinese Academy of Sciences , Yuquan 19, Shijingshan, Beijing, 100049, China
| | - Kun Tong
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences , Dingxi 1295, Changning, Shanghai, 200050, China
- University of Chinese Academy of Sciences , Yuquan 19, Shijingshan, Beijing, 100049, China
| | - Shidong Ji
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences , Dingxi 1295, Changning, Shanghai, 200050, China
| | - Shanhu Bao
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences , Dingxi 1295, Changning, Shanghai, 200050, China
| | - Xun Cao
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences , Dingxi 1295, Changning, Shanghai, 200050, China
| | - Ping Jin
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences , Dingxi 1295, Changning, Shanghai, 200050, China
- Materials Research Institute for Sustainable Development, National Institute of Advanced Industrial Science and Technology (AIST) , Moriyama, Nagoya 463-8560, Japan
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Tong K, Liu X, Zhang Y, Yu S. Visible-Light-Induced Direct Oxidative C−H Amidation of Heteroarenes with Sulfonamides. Chemistry 2016; 22:15669-15673. [DOI: 10.1002/chem.201604014] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Indexed: 01/08/2023]
Affiliation(s)
- Kun Tong
- State Key Laboratory of Analytical Chemistry for Life Science; School of Chemistry and Chemical Engineering; Nanjing University; Nanjing 210023 P. R. China
| | - Xiaodong Liu
- State Key Laboratory of Analytical Chemistry for Life Science; School of Chemistry and Chemical Engineering; Nanjing University; Nanjing 210023 P. R. China
| | - Yan Zhang
- State Key Laboratory of Analytical Chemistry for Life Science; School of Chemistry and Chemical Engineering; Nanjing University; Nanjing 210023 P. R. China
| | - Shouyun Yu
- State Key Laboratory of Analytical Chemistry for Life Science; School of Chemistry and Chemical Engineering; Nanjing University; Nanjing 210023 P. R. China
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Tong K, Lin A, Ji G, Wang D, Wang X. The effects of adsorbing organic pollutants from super heavy oil wastewater by lignite activated coke. J Hazard Mater 2016; 308:113-119. [PMID: 26808249 DOI: 10.1016/j.jhazmat.2016.01.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Revised: 12/28/2015] [Accepted: 01/08/2016] [Indexed: 06/05/2023]
Abstract
The adsorption of organic pollutants from super heavy oil wastewater (SHOW) by lignite activated coke (LAC) was investigated. Specifically, the effects of LAC adsorption on pH, BOD5/COD(Cr)(B/C), and the main pollutants before and after adsorption were examined. The removed organic pollutants were characterized by Fourier transform infrared spectroscopy (FTIR), Boehm titrations, gas chromatography-mass spectrometry (GC-MS), and liquid chromatography with organic carbon detection (LC-OCD). FTIR spectra indicated that organic pollutants containing -COOH and -NH2 functional groups were adsorbed from the SHOW. Boehm titrations further demonstrated that carboxyl, phenolic hydroxyl, and lactonic groups on the surface of the LAC increased. GC-MS showed that the removed main organic compounds are difficult to be degraded or extremely toxics to aquatic organisms. According to the results of LC-OCD, 30.37 mg/L of dissolved organic carbons were removed by LAC adsorption. Among these, hydrophobic organic contaminants accounted for 25.03 mg/L. Furthermore, LAC adsorption was found to increase pH and B/C ratio of the SHOW. The mechanisms of adsorption were found to involve between the hydrogen bonding and the functional groups of carboxylic, phenolic, and lactonic on the LAC surface. In summary, all these results demonstrated that LAC adsorption can remove bio-refractory DOCs, which is beneficial for biodegradation.
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Affiliation(s)
- Kun Tong
- College of Chemical Engineering, China University of Petroleum, Qingdao 266555, China; National University Science Park, China University of Petroleum, Dongying 207062, China; Liaohe Petroleum Exploration Bureau, China National Petroleum Corporation, Beijing 102206,China
| | - Aiguo Lin
- College of Chemical Engineering, China University of Petroleum, Qingdao 266555, China; National University Science Park, China University of Petroleum, Dongying 207062, China.
| | - Guodong Ji
- Department of Environmental Engineering, Peking University, Beijing 100871,China.
| | - Dong Wang
- Liaohe Petroleum Exploration Bureau, China National Petroleum Corporation, Beijing 102206,China
| | - Xinghui Wang
- Liaohe Petroleum Exploration Bureau, China National Petroleum Corporation, Beijing 102206,China
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Krieger P, Menna M, Tong K, Goertz J, Kaban N, Irwin J, Heller M. 148 Long-Term Evaluation of a Brief Educational Intervention for Use of Inferior Vena Cava Ultrasound to Determine Intravascular Status: Cause for Concern. Ann Emerg Med 2015. [DOI: 10.1016/j.annemergmed.2015.07.180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Jiang H, An X, Tong K, Zheng T, Zhang Y, Yu S. Visible-Light-Promoted Iminyl-Radical Formation from Acyl Oximes: A Unified Approach to Pyridines, Quinolines, and Phenanthridines. Angew Chem Int Ed Engl 2015; 54:4055-9. [DOI: 10.1002/anie.201411342] [Citation(s) in RCA: 278] [Impact Index Per Article: 30.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2014] [Indexed: 01/12/2023]
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Jiang H, An X, Tong K, Zheng T, Zhang Y, Yu S. Visible-Light-Promoted Iminyl-Radical Formation from Acyl Oximes: A Unified Approach to Pyridines, Quinolines, and Phenanthridines. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201411342] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Ezeoke M, Tong K, Shi S. A Practical Approach For Modelling The Electromagnetic Radar Signature Of Barefaced Terrain For Remote Sensing. Int J CMEM 2014. [DOI: 10.2495/cmem-v2-n4-403-419] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Zhao C, Tong K, Tan J, Liu Q, Wu T, Sun D. Colloidal properties of montmorillonite suspensions modified with polyetheramine. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2014.05.052] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Tong K, Kissinger R, Soper H. A-02 * Frontal and Parietal Age-Related Cognitive Decline. Arch Clin Neuropsychol 2014. [DOI: 10.1093/arclin/acu038.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Tong K, Zhang Y, Fu D, Meng X, An Q, Chu PK. Removal of organic pollutants from super heavy oil wastewater by lignite activated coke. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2014.01.062] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Geng Y, Liu M, Tong K, Xu J, Lee YI, Hao J, Liu HG. Fabrication of composite polymer foam films at the liquid/liquid interface through emulsion-directed assembly and adsorption processes. Langmuir 2014; 30:2178-2187. [PMID: 24520807 DOI: 10.1021/la500187d] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The foam films of polystyrene-b-poly(acrylic acid)-b-polystyrene (PS-b-PAA-b-PS) doped with Cd(II) or Pb(II) species were fabricated at the planar liquid/liquid interfaces between a DMF/chloroform (v/v: 1/1) solution of the polymer and aqueous solutions containing cadmium acetate or lead acetate at ambient temperature. Optical microscopic observation shows the thin film is uniform on a larger length scale. Transmission electron microscopic (TEM) investigations reveal that the foam films are made up of microcapsules with the size of several hundreds of nanometers to micrometers. The walls of the microcapsules have a layered structure decorating with nanofibers and hollow nanospheres, where numerous inorganic fine nanoparticles are dispersed homogeneously. The film formation is a result of emulsion droplet-templated assembly and adsorption of the formed microcapsules at the planar liquid/liquid interface. Because of the miscibility of DMF with chloroform and water, DMF migrates to the aqueous phase while water migrates to the organic phase across the interface, resulting in the formation of a W/O emulsion, as revealed by optical microscopic observation, freeze fracture transmission electron microscopic (FF-TEM) observation, and dynamic laser scattering (DLS) investigation. The triblock copolymer molecules and the inorganic species adsorb and self-assemble around the emulsion drops, leading to the formation of the composite microcapsules. X-ray photoelectron spectroscopic (XPS) and FTIR spectroscopic results indicate that two kinds of Cd(II) or Pb(II) species, metal oxide or hydroxide, resulting from the hydrolysis of the metal ions and the coordinated metal ions to the carboxyl groups coexist in the formed thin films, which transform to metal sulfide completely after treating with hydrogen sulfide to get metal sulfide nanoparticle-doped polymer thin films.
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Affiliation(s)
- Yuanyuan Geng
- Key Laboratory for Colloid and Interface Chemistry of Education Ministry, Shandong University , Jinan 250100, P. R. China
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Zhao C, Tan J, Li W, Tong K, Xu J, Sun D. Ca2+ ion responsive pickering emulsions stabilized by PSSMA nanoaggregates. Langmuir 2013; 29:14421-14428. [PMID: 24188032 DOI: 10.1021/la4035535] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A novel Ca(2+) ion responsive particulate emulsifier, which is based on copolymer nanoaggregates, is reported in this work. Results from dynamic light scattering (DLS) and cryo-transmission electron microscopy (cryo-TEM) indicate that the formation of poly (4-styrenesulfonic acid-co-maleic acid) sodium salt (PSSMA) nanoaggregates is strongly dependent on Ca(2+) concentration. The PSSMA copolymer only aggregates above a critical Ca(2+) concentration (0.2 M) with an average diameter of 10-40 nm. After dilution with water, PSSMA nanoaggregates are rapidly redissolved again. On the basis of the properties of PSSMA nanoaggregates, Ca(2+) ion responsive Pickering emulsions were successfully prepared. At high Ca(2+) concentrations, the emulsions with high stability against coalescence can be prepared with the size in the submicrometer range as determined by DLS. Cryo-TEM and dynamic interfacial tension results confirm the adsorption of PSSMA nanoaggregates at the interface, which is the key to the stability of the emulsions. More importantly, rapid demulsification can be achieved by dilution with water on demand. It is because, upon dilution with water, PSSMA nanoaggregates undergo a transition from stable nanoaggregates to individual polymer chains, which leads to interfacial desorption of nanoaggregates and rapid demulsification of emulsions. Thus, this finding presents a new manipulation on emulsion stability and is expected to provide a useful guidance in the fields of oil recovery, food science, environment protection, and so on.
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Affiliation(s)
- Chunhua Zhao
- Key Laboratory of Colloid and Interface Chemistry, Shandong University , Ministry of Education, Jinan, Shandong 250100, People's Republic of China
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Liu GH, Ye Z, Tong K, Zhang YH. Biotreatment of heavy oil wastewater by combined upflow anaerobic sludge blanket and immobilized biological aerated filter in a pilot-scale test. Biochem Eng J 2013. [DOI: 10.1016/j.bej.2012.12.017] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Tong K, Zhang Y, Chu PK. Evaluation of calcium chloride for synergistic demulsification of super heavy oil wastewater. Colloids Surf A Physicochem Eng Asp 2013. [DOI: 10.1016/j.colsurfa.2012.11.047] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Al-Armaghany A, Tong K, Leung TS. Superficial heat reduction technique for a hybrid microwave-optical device. Annu Int Conf IEEE Eng Med Biol Soc 2013; 2013:3749-3752. [PMID: 24110546 DOI: 10.1109/embc.2013.6610359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Microwave applicator in the form of a circularly polarized microstrip patch antenna is proposed to provide localized deep heating in biological tissue, which causes blood vessels to dilate leading to changes in tissue oxygenation. These changes are monitored by an integrated optical system for studying thermoregulation in different parts of the human body. Using computer simulations, this paper compares circularly and linearly polarized antennas in terms of the efficiency of depositing electromagnetic (EM) energy and the heating patterns. The biological model composes of the skin, fat and muscle layers with appropriate dielectric and thermal properties. The results show that for the same specific absorption rate (SAR) in the muscle, the circularly polarized antenna results in a lower SAR in the skin-fat interface than the linearly polarized antenna. The thermal distribution is also presented based on the biological heat equation. The proposed circularly polarized antenna shows heat reduction in the superficial layers in comparison to the linearly polarized antenna.
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