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Lin L, Mo Z, Xiao J, Kou J, Guo C, He SM, Zhang W, Sun Y. Identification and Automated Delineation of Radioresistant Biological Tumor Volume in Nasopharyngeal Carcinoma Based on Magnetic Resonance Imaging Radiomics. Int J Radiat Oncol Biol Phys 2023; 117:e598-e599. [PMID: 37785804 DOI: 10.1016/j.ijrobp.2023.06.1958] [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: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Widespread use of intensity modulated radiotherapy (IMRT) has improved the tumor control rate of nasopharyngeal carcinoma (NPC). However, nearly 20% of the patients with local-advanced NPC would relapse after precise irradiation and 80% of the recurrent lesions occur within the high dose field, suggesting that there are radiation-resistant cancer cell subsets within the tumor. In this context, identification and contouring of radiation resistance region of NPC for dose escalation at primary IMRT could be advantageous. In this work, we proposed a two-step radiomics workflow to predict local relapse and the recurrent region of NPC before primary IMRT. MATERIALS/METHODS In this single-center, retrospective study, pre-treatment magnetic resonance (MR) sequences of T1-weighted imaging (T1-w) and contrast-enhanced T1-weighted imaging (CET1-w) were collected from 800 patients of newly diagnosed and non-metastatic NPC between April 2009 and December 2015. The primary gross tumor volume (GTVp) of all patients and the actual recurrent lesion (GTVr) of patients who suffered from local recurrence were manually contoured for further analysis. A two-step complete radiomics workflow was designed to predict tumor recurrence and segment the region. First, least absolute shrinkage and selection operator (LASSO) was utilized for radiomics features selection of GTVp and support vector machine (SVM) was adopted to predict the recurrence. If the model predicts a recurrence, then the workflow utilizes an improved 3D U-Net to segment the recurrent region. Area under receiver operating characteristic curve (ROC-AUC) was used to evaluate the performance of tumor recurrence prediction, and Dice similarity coefficient (DSC) was used to assess the consistence between the actual and predicted GTVr. RESULTS Of 800 NPC patients, 95 (11.9%) patients developed in-field local recurrence. For recurrence risk prediction, the SVM ensemble model (T1-w+CET1-w) was selected for further application with higher sensitivity. The average ROC-AUC, specificity, sensitivity of the SVM ensemble model in a 5-fold cross-validation and in the independent test set of 160 patients were 0.922, 0.922, 0.777 and 0.928, 0.915, 0.737, respectively. Moreover, for recurrent region segmentation, the multi-modality (T1-w+CET1-w) model was superior to the single-modality (T1-w or CET1-w) model. In an independent test set of 15 patients, the DSC, sensitivity and 95% Hausdorff Distance between actual and predicted GTVr was 0.549±0.176, 0.696±0.118 and 9.813±4.788 which was superior to 0.444±0.188, 0.497±0.218 and 12.047±5.361 of original 3D U-Net. CONCLUSION The proposed two-step radiomics workflow showed a good performance in predicting tumor recurrence of NPC. The predicted location of the recurrence lesion was all accurate, but there was still a certain difference between the volume of the automated delineated and actual GTVr, which needed to be further optimized to be used as biological tumor volume.
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Affiliation(s)
- L Lin
- Sun Yat-sen University Cancer Center; State Key Laboratory of Oncology in South China; Collaborative Innovation Center for Cancer Medicine; Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, Guangdong, 510060, China, Guangzhou, China
| | - Z Mo
- Shenzhen United Imaging Research Institute of Innovative Medical Equipment, Shenzhen, China
| | - J Xiao
- Shenzhen United Imaging Research Institute of Innovative Medical Equipment, Shenzhen, China
| | - J Kou
- Sun Yat-sen University Cancer Center, Guangzhou, China
| | - C Guo
- First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, China
| | - S M He
- United Imaging Research Institute of Intelligent Imaging, Beijing, China
| | - W Zhang
- Shanghai United Imaging Healthcare Co., Ltd., Shanghai, China
| | - Y Sun
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
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Wang Z, Gao Z, Zheng Y, Kou J, Song D, Yu X, Dong B, Chen T, Yang Y, Gao X, Wang Q, Ye T, Yang W, Zhang X, Li H, Yang L. Melatonin inhibits atherosclerosis progression via galectin-3 downregulation to enhance autophagy and inhibit inflammation. J Pineal Res 2023; 74:e12855. [PMID: 36692032 DOI: 10.1111/jpi.12855] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [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: 09/01/2022] [Revised: 12/24/2022] [Accepted: 01/19/2023] [Indexed: 01/25/2023]
Abstract
Autophagy deficiency in macrophages exacerbates inflammation in atherosclerosis (AS), and recently, galectin-3 (Gal-3) has been implicated as a critical promoter of inflammation in AS. Further, melatonin (Mel) exerts an autophagy-promoting effect in many chronic inflammatory diseases. In this study, we aimed to investigate whether Mel inhibits AS progression by downregulating Gal-3 to enhance autophagy and inhibit inflammation. Thus, we performed in vivo and in vitro experiments using high-fat diet (HFD)-fed ApoE-/- mice and THP-1 macrophages, respectively. Smart-seq of AS plaque macrophages revealed that the differentially expressed genes (DEGs) downregulated by Mel were enriched in immune-related processes, and changes in inflammation status were confirmed based on lower levels of proinflammatory factors in Mel-treated HFD-fed ApoE-/- mice and THP-1 macrophages. Further, via transcriptome-based multiscale network pharmacology platform (TMNP), the upstream target genes of the smart-seq DEGs were identified, and Gal-3 showed a high score. Gal-3 was downregulated both in vivo and in vitro by Mel treatment. Besides, the enrichment of the target genes predicted via the TMNP method indicated that autophagy considerably affected the DEGs. Mel treatment as well as Gal-3 knockdown downregulated most inflammatory response-related proteins could attribute to enhancing autophagy. Mechanistically, Mel treatment inhibited Gal-3 leading to lowering the activity of the nuclear transcription factor-kappa B (NF-κB) pathway, and promoting the nuclear localization of transcription factor EB (TFEB). However, increased secretion of Gal-3 activated the phosphatidylinositol 3-kinase (PI3K)/protein kinase B (AKT) pathway and impaired autophagy via binding to CD98. Thus, Mel promoted autophagy and restrained inflammation by downregulating Gal-3, implying that it holds promise as a treatment for AS.
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Affiliation(s)
- Zitong Wang
- Department of Pathophysiology, School of Basic Medical Sciences, Harbin Medical University, Harbin, China
| | - Ziyu Gao
- Department of Pathophysiology, School of Basic Medical Sciences, Harbin Medical University, Harbin, China
- Science and Research Department, National Center for Cardiovascular Diseases, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yinghong Zheng
- Department of Pathophysiology, School of Basic Medical Sciences, Harbin Medical University, Harbin, China
| | - Jiayuan Kou
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China
| | - Dan Song
- Department of Pathophysiology, School of Basic Medical Sciences, Harbin Medical University, Harbin, China
| | - Xue Yu
- Department of Pathophysiology, School of Basic Medical Sciences, Harbin Medical University, Harbin, China
| | - Bowen Dong
- Department of Pathophysiology, School of Basic Medical Sciences, Harbin Medical University, Harbin, China
| | - Tianzuo Chen
- Department of Pathophysiology, School of Basic Medical Sciences, Harbin Medical University, Harbin, China
| | - Yan Yang
- Department of Pathophysiology, School of Basic Medical Sciences, Harbin Medical University, Harbin, China
| | - Xi Gao
- Department of Pathophysiology, School of Basic Medical Sciences, Harbin Medical University, Harbin, China
| | - Qianxue Wang
- Department of Pathophysiology, School of Basic Medical Sciences, Harbin Medical University, Harbin, China
| | - Ting Ye
- Department of Pathophysiology, School of Basic Medical Sciences, Harbin Medical University, Harbin, China
| | - Wei Yang
- Department of Pathophysiology, School of Basic Medical Sciences, Harbin Medical University, Harbin, China
- School of Public Health, Qiqihar Medical University, Qiqihar, China
| | - Xu Zhang
- Department of Pathophysiology, School of Basic Medical Sciences, Harbin Medical University, Harbin, China
| | - Hong Li
- Department of Pathophysiology, School of Basic Medical Sciences, Harbin Medical University, Harbin, China
| | - Liming Yang
- Department of Pathophysiology, Harbin Medical University (Daqing), Daqing, China
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3
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Zhong Q, Kou J, Özdemir ŞK, El-Ganainy R. Hierarchical Construction of Higher-Order Exceptional Points. Phys Rev Lett 2020; 125:203602. [PMID: 33258627 DOI: 10.1103/physrevlett.125.203602] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 09/28/2020] [Indexed: 06/12/2023]
Abstract
The realization of higher-order exceptional points (HOEPs) can lead to orders of magnitude enhancement in light-matter interactions beyond the current fundamental limits. Unfortunately, implementing HOEPs in the existing schemes is a rather difficult task, due to the complexity and sensitivity to fabrication imperfections. Here we introduce a hierarchical approach for engineering photonic structures having HOEPs that are easier to build and more resilient to experimental uncertainties. We demonstrate our technique by an example that involves parity-time symmetric optical microring resonators with chiral coupling among the internal optical modes of each resonator. Interestingly, we find that the uniform coupling profile is not required to achieve HOEPs in this system-a feature that implies the emergence of HOEPs from disorder and provides resilience against some fabrication errors. Our results are confirmed by using full-wave simulations based on Maxwell's equation in realistic optical material systems.
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Affiliation(s)
- Q Zhong
- Department of Physics, Michigan Technological University, Houghton, Michigan 49931, USA
- Henes Center for Quantum Phenomena, Michigan Technological University, Houghton, Michigan 49931, USA
| | - J Kou
- Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California 91125, USA
| | - Ş K Özdemir
- Department of Engineering Science and Mechanics, and Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - R El-Ganainy
- Department of Physics, Michigan Technological University, Houghton, Michigan 49931, USA
- Henes Center for Quantum Phenomena, Michigan Technological University, Houghton, Michigan 49931, USA
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4
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Liu B, Kou J, Li F, Huo D, Xu J, Zhou X, Meng D, Ghulam M, Artyom B, Gao X, Ma N, Han D. Lemon essential oil ameliorates age-associated cognitive dysfunction via modulating hippocampal synaptic density and inhibiting acetylcholinesterase. Aging (Albany NY) 2020; 12:8622-8639. [PMID: 32392535 PMCID: PMC7244039 DOI: 10.18632/aging.103179] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Accepted: 03/24/2020] [Indexed: 02/07/2023]
Abstract
The lemon essential oil (LEO), extracted from the fruit of lemon, has been used to treat multiple pathological diseases, such as diabetes, inflammation, cardiovascular diseases, depression and hepatobiliary dysfunction. The study was designed to study the effects of LEO on cognitive dysfunction induced by Alzheimer’s disease (AD). We used APP/PS1 double transgene (APP/PS1) AD mice in the experiment; these mice exhibit significant deficits in synaptic density and hippocampal-dependent spatial related memory. The effects of LEO on learning and memory were examined using the Morris Water Maze (MWM) test, Novel object recognition test, and correlative indicators, including a neurotransmitter (acetylcholinesterase, AChE), a nerve growth factor (brain-derived neurotrophic factor, BDNF), a postsynaptic marker (PSD95), and presynaptic markers (synapsin-1, and synaptophysin), in APP/PS1 mice. Histopathology was performed to estimate the effects of LEO on AD mice. A significantly lowered brain AChE depression in APP/PS1 and wild-type C57BL/6L (WT) mice. PSD95/ Synaptophysin, the index of synaptic density, was noticeably improved in histopathologic changes. Hence, it can be summarized that memory-enhancing activity might be associated with a reduction in the AChE levels and is elevated by BDNF, PSD95, and synaptophysin through enhancing synaptic plasticity.
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Affiliation(s)
- Bonan Liu
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin 150081, China
| | - Jiayuan Kou
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin 150081, China
| | - Fuyan Li
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin 150081, China
| | - Da Huo
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin 150081, China
| | - Jiaran Xu
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin 150081, China
| | - Xiaoxi Zhou
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin 150081, China
| | - Dehao Meng
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin 150081, China
| | - Murtaza Ghulam
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin 150081, China
| | - Bobkov Artyom
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin 150081, China
| | - Xu Gao
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin 150081, China.,Basic Medical Institute of Heilongjiang Medical Science Academy, Harbin 150081, China.,Translational Medicine Center of Northern China, Harbin 150081, China.,Heilongjiang Provincial key Laboratory of Genetically Modified Model Animal, Harbin Medical University, Ministry of Education, Harbin 150081, China.,China Key Laboratory of Preservation of Human Genetic Resources and Disease Control in China (Harbin Medical University), Ministry of Education, Harbin 150081, China
| | - Ning Ma
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin 150081, China.,Basic Medical Institute of Heilongjiang Medical Science Academy, Harbin 150081, China.,Translational Medicine Center of Northern China, Harbin 150081, China
| | - Dong Han
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin 150081, China.,Basic Medical Institute of Heilongjiang Medical Science Academy, Harbin 150081, China.,Translational Medicine Center of Northern China, Harbin 150081, China
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5
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Nie J, Ngokana LD, Kou J, Zhao Y, Tu J, Ji H, Tan P, Zhao T, Cao Y, Wu Z, Wang Q, Ren S, Xuan X, Huang H, Li Y, Liang H, Gao X, Zhou L. Low-dose ethanol intake prevents high-fat diet-induced adverse cardiovascular events in mice. Food Funct 2020; 11:3549-3562. [DOI: 10.1039/c9fo02645b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
This study aimed to clarify whether low-dose ethanol intake could prevent high-fat diet-induced adverse effects on cardiomyocytes in mice.
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6
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Qiao Y, Wang C, Kou J, Wang L, Han D, Huo D, Li F, Zhou X, Meng D, Xu J, Murtaza G, Artyom B, Ma N, Luo S. MicroRNA-23a suppresses the apoptosis of inflammatory macrophages and foam cells in atherogenesis by targeting HSP90. Gene 2019; 729:144319. [PMID: 31884108 DOI: 10.1016/j.gene.2019.144319] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 12/20/2019] [Indexed: 11/25/2022]
Abstract
In previous study, we have found that microRNA-23a is down regulated in atherosclerotic tissues. Here we demonstrate that miR-23a directly binds to 3'UTR of HSP90 mRNA to suppress the expression of HSP90. To investigate the potential roles of miR-23a in macrophage, THP-1 macrophages were transfected with miR-23a mimics or inhibitors. Our results showed inflammatory factors IL-6 and MCP-1 concentrations in cell culture medium of macrophage and foam cell transfected with miR-23a mimics were decreased. Furthermore, we find that apoptosis of macrophage and foam cells transfected with miR-23a mimics were inhibited. Over expression of miR-23a in foam cells could reduced lipid intake and accumulation in foam cells. Meanwhile, we found that in inflammatory macrophages and foam cells transfected with miR-23a mimcs, HSP90 and NF-κB proteins are significantly decreased. Our results have suggested a promising and potential therapeutic target for atherosclerosis.
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Affiliation(s)
- Yu Qiao
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China; Key Laboratory of Cardiovascular Medicine Research (Harbin Medical University), Ministry of Education, Harbin, China; Medical Science Institute of Hei Longjiang Province, Harbin, China
| | - Chuxuan Wang
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China; Key Laboratory of Cardiovascular Medicine Research (Harbin Medical University), Ministry of Education, Harbin, China; Translational Medicine Center of Northern China, Harbin Medical University, Harbin, China; Medical Science Institute of Hei Longjiang Province, Harbin, China
| | - Jiayuan Kou
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China; Key Laboratory of Cardiovascular Medicine Research (Harbin Medical University), Ministry of Education, Harbin, China; Medical Science Institute of Hei Longjiang Province, Harbin, China
| | - Lujing Wang
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China; Key Laboratory of Cardiovascular Medicine Research (Harbin Medical University), Ministry of Education, Harbin, China; Medical Science Institute of Hei Longjiang Province, Harbin, China
| | - Dong Han
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China; Key Laboratory of Cardiovascular Medicine Research (Harbin Medical University), Ministry of Education, Harbin, China; Medical Science Institute of Hei Longjiang Province, Harbin, China
| | - Da Huo
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China; Key Laboratory of Cardiovascular Medicine Research (Harbin Medical University), Ministry of Education, Harbin, China; Medical Science Institute of Hei Longjiang Province, Harbin, China
| | - Fuyan Li
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China; Key Laboratory of Cardiovascular Medicine Research (Harbin Medical University), Ministry of Education, Harbin, China; Medical Science Institute of Hei Longjiang Province, Harbin, China
| | - Xiaoxi Zhou
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China; Key Laboratory of Cardiovascular Medicine Research (Harbin Medical University), Ministry of Education, Harbin, China; Medical Science Institute of Hei Longjiang Province, Harbin, China
| | - Dehao Meng
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China; Key Laboratory of Cardiovascular Medicine Research (Harbin Medical University), Ministry of Education, Harbin, China; Medical Science Institute of Hei Longjiang Province, Harbin, China
| | - Jiaran Xu
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China; Key Laboratory of Cardiovascular Medicine Research (Harbin Medical University), Ministry of Education, Harbin, China; Medical Science Institute of Hei Longjiang Province, Harbin, China
| | - Ghulam Murtaza
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China; Key Laboratory of Cardiovascular Medicine Research (Harbin Medical University), Ministry of Education, Harbin, China; Medical Science Institute of Hei Longjiang Province, Harbin, China
| | - Bobkov Artyom
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China; Key Laboratory of Cardiovascular Medicine Research (Harbin Medical University), Ministry of Education, Harbin, China; Medical Science Institute of Hei Longjiang Province, Harbin, China
| | - Ning Ma
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China; Key Laboratory of Cardiovascular Medicine Research (Harbin Medical University), Ministry of Education, Harbin, China; Medical Science Institute of Hei Longjiang Province, Harbin, China.
| | - Shanshun Luo
- Department of Gerontology, The First Hospital of Harbin Medical University, Harbin, China.
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Huang N, Murtaza G, Wang L, Luan J, Wang X, Sun Y, Wu X, Tao Y, Shi S, Cao P, Qiao Y, Han D, Kou J, Ma N, Gao X. Chrm3 protects against acinar cell necrosis by stabilizing caspase-8 expression in severe acute pancreatitis mice model. J Cell Biochem 2019; 121:2618-2631. [PMID: 31692054 DOI: 10.1002/jcb.29483] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Accepted: 10/08/2019] [Indexed: 12/22/2022]
Abstract
Acinar cells in acute pancreatitis (AP) die through apoptosis and necrosis, the impacts of which are quite different. Early clinical interference strategies on preventing the progress of AP to severe acute pancreatitis (SAP) are the elimination of inflammation response and inhibition of necrosis. Muscarinic acetylcholine receptor M3 was encoded by Chrm3 gene. It is one of the best-characterized receptors of pancreatic β cells and regulates insulin secretion, but its function in AP remains unclear. In this study, we explored the function of Chrm3 gene in the regulation of cell death in l-arginine-induced SAP animal models. We found that Chrm3 was upregulated in pancreatitis, and we further confirmed the localization of Chrm3 resided in both pancreatic islets and acinar cell membranes. The reduction of Chrm3 decreased the pathological lesion of SAP and reduced amylase activities in serum. Consistently, Chrm3 can suppress acinar cells necrosis markedly, but has no effect on regulating apoptosis after l-arginine treatment. It was shown that Chrm3 attenuated acinar cells necrosis at least in part by stabilizing caspase-8. Thus, this study indicates that Chrm3 is critical participants in SAP, and regulation of Chrm3 expression might be a useful therapeutic strategy for preventing pathologic necrosis.
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Affiliation(s)
- Ning Huang
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China
| | - Ghulam Murtaza
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China
| | - Lujing Wang
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China.,Basic Medical Institute, Heilongjiang Medical Science Academy, Harbin, China.,Translational Medicine Center of Northern China, Harbin, China
| | - Jing Luan
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China
| | - Xinlei Wang
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China
| | - Yumiao Sun
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China
| | - Xing Wu
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China
| | - Yuxi Tao
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China
| | - Shuoxi Shi
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China
| | - Peihua Cao
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China
| | - Yu Qiao
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China.,Basic Medical Institute, Heilongjiang Medical Science Academy, Harbin, China.,Translational Medicine Center of Northern China, Harbin, China
| | - Dong Han
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China.,Basic Medical Institute, Heilongjiang Medical Science Academy, Harbin, China.,Translational Medicine Center of Northern China, Harbin, China
| | - Jiayuan Kou
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China.,Basic Medical Institute, Heilongjiang Medical Science Academy, Harbin, China.,Translational Medicine Center of Northern China, Harbin, China
| | - Ning Ma
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China.,Basic Medical Institute, Heilongjiang Medical Science Academy, Harbin, China.,Translational Medicine Center of Northern China, Harbin, China
| | - Xu Gao
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China.,Basic Medical Institute, Heilongjiang Medical Science Academy, Harbin, China.,Translational Medicine Center of Northern China, Harbin, China.,Heilongjiang Provincial Key Laboratory of Genetically Modified Model Animal, Harbin Medical University, Harbin, China.,Key Laboratory of Preservation of Human Genetic Resources and Disease Control in China, Harbin Medical University, Ministry of Education, Harbin, China
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8
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Li X, Zhang X, Zheng L, Kou J, Zhong Z, Jiang Y, Wang W, Dong Z, Liu Z, Han X, Li J, Tian Y, Zhao Y, Yang L. Author Correction: Hypericin-mediated sonodynamic therapy induces autophagy and decreases lipids in THP-1 macrophage by promoting ROS-dependent nuclear translocation of TFEB. Cell Death Dis 2019; 10:202. [PMID: 30814492 PMCID: PMC6393458 DOI: 10.1038/s41419-019-1321-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Xuesong Li
- Department of Pathophysiology, Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, China
| | - Xin Zhang
- Department of Respiratory Medicine, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, China.,Department of Cardiology, The First Affiliated Hospital, Cardiovascular Institute, Harbin Medical University, Harbin, China
| | - Longbin Zheng
- Department of Pathophysiology, Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, China
| | - Jiayuan Kou
- Department of Pathophysiology, Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, China
| | - Zhaoyu Zhong
- Department of Pathophysiology, Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, China
| | - Yueqing Jiang
- Department of Pathophysiology, Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, China
| | - Wei Wang
- Department of Cardiology, The First Affiliated Hospital, Cardiovascular Institute, Harbin Medical University, Harbin, China
| | - Zengxiang Dong
- Department of Cardiology, The First Affiliated Hospital, Cardiovascular Institute, Harbin Medical University, Harbin, China
| | - Zhongni Liu
- Department of Pathophysiology, Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, China
| | - Xiaobo Han
- Department of Pathophysiology, Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, China
| | - Jing Li
- Department of Electron Microscopic Center, Basic Medical Science College, Harbin Medical University, Harbin, China
| | - Ye Tian
- Department of Pathophysiology, Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, China. .,Division of Cardiology, The First Affiliated Hospital, Harbin Medical University, Harbin, China.
| | - Yajun Zhao
- Department of Pathophysiology, Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, China.
| | - Liming Yang
- Department of Pathophysiology, Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, China.
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Li X, Kou J, Jiang Y, Liu Z, Han X, Zheng Y, Tian Y, Yang L. HYPERICIN-MEDIATED SONODYNAMIC THERAPY INDUCES AUTOPHAGY AND DECREASES LIPIDS IN THP-1 MACROPHAGE BY PROMOTING ROS-DEPENDENT NUCLEAR TRANSLOCATION OF TFEB. Pathophysiology 2018. [DOI: 10.1016/j.pathophys.2018.07.116] [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: 10/28/2022] Open
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10
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Han X, Zhong Z, Kou J, Zheng Y, Liu Z, Jiang Y, Zhang Z, Gao Z, Cong L, Tian Y, Yang L. ROS Generated by Upconversion Nanoparticle-Mediated Photodynamic Therapy Induces Autophagy Via PI3K/AKT/ mTOR Signaling Pathway in M1 Peritoneal Macrophage. Cell Physiol Biochem 2018; 48:1616-1627. [PMID: 30071509 DOI: 10.1159/000492283] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Accepted: 07/22/2018] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIMS Atherosclerosis is a chronic inflammatory cardiovascular disease. Macrophages are major components of atherosclerotic plaques and play a key role in the development of atherosclerosis by secreting a variety of pro-inflammatory factors. Our previous studies have confirmed that upconversion nanoparticles encapsulating chlorin e6 (UCNPs-Ce6) mediated photodynamic therapy (PDT) can promote cholesterol efflux and induce apoptosis in THP-1 macrophages. In this study, we investigated whether reactive oxygen species (ROS) generated by UCNPs-Ce6-mediated PDT can induce autophagy to inhibit the expression of pro-inflammatory factor in M1 peritoneal macrophages. METHODS Peritoneal macrophages were collected from C57/BL6 mice injected with 3% thioglycollate broth medium and induced by lipopolysaccharides and interferon-γ. Intracellular ROS production was assessed by 2'-7'-dichloroforescein diacetate and flow cytometry. Autophagy was assayed by western blot, transmission electron microscopy and immunofluorescence. Pro-inflammatory cytokines were detected by enzyme-linked immunosorbent assay and western blot. RESULTS Model M1 peritoneal macrophages were established after 24 h induction. Protein expression levels of LC3 II and Beclin1, and degradation of p62 increased and peaked at 2 h in the PDT group. Meanwhile, levels of inflammatory cytokines iNOS, IL-12, and TNF-α markedly decreased after PDT. The increase in autophagy levels and decrease in pro-inflammatory cytokines were significantly inhibited by 3-methyladenine. Furthermore, ROS generated by UCNPs-Ce6 mediated PDT activated autophagy. The expression of autophagy related-protein and inflammatory cytokines iNOS, IL-12, and TNF-α were inhibited by the ROS inhibitor N-acetyl cysteine. CONCLUSIONS ROS generated by UCNPs-Ce6-mediated PDT activated autophagy and inhibited the expression of pro-inflammatory factors of M1 peritoneal macrophage via the PI3K/AKT/mTOR signaling pathway.
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Affiliation(s)
- Xiaobo Han
- Department of Pathophysiology, Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, China
| | - Zhaoyu Zhong
- Department of Pathophysiology, Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, China
| | - Jiayuan Kou
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China
| | - Yinghong Zheng
- Department of Pathophysiology, Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, China
| | - Zhongni Liu
- Department of Pathophysiology, Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, China
| | - Yueqing Jiang
- Department of Pathophysiology, Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, China
| | - Zhiren Zhang
- Departments of Cardiology and Clinical Pharmacy, Harbin Medical University Cancer Hospital, Institute of Metabolic Disease, Heilongjiang, Academy of Medical Science, Key Laboratories of Education Ministry for Myocardial Ischemia Mechanism and Treatment, Harbin, China
| | - Ziyu Gao
- Department of Pathophysiology, Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, China
| | - Lin Cong
- Department of Pathophysiology, Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, China
| | - Ye Tian
- Department of Pathophysiology, Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, China.,Division of Cardiology, The First Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Liming Yang
- Department of Pathophysiology, Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, China
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Abstract
In 1841, the extraction of hematoporphyrin from dried blood by removing iron marked the birth of the photosensitizer. The last twenty years has witnessed extensive research in the application of photodynamic therapy (PDT) in tumor-bearing (or other diseases) animal models and patients. The period has seen development of photosensitizers from the first to the third generation, and their evolution from simple to more complex entities. This review focuses on porphyrin photosensitizers and their effect on tumors, mediated via several pathways involved in cell necrosis, apoptosis or autophagic cell death, and the preventive and therapeutic application of PDT against atherosclerosis.
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Affiliation(s)
- Jiayuan Kou
- Department of Pathophysiology, Harbin Medical University, Harbin, PR China.,Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, PR China
| | - Dou Dou
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, PR China
| | - Liming Yang
- Department of Pathophysiology, Harbin Medical University, Harbin, PR China
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Li X, Zhang X, Zheng L, Kou J, Zhong Z, Jiang Y, Wang W, Dong Z, Liu Z, Han X, Li J, Tian Y, Zhao Y, Yang L. Hypericin-mediated sonodynamic therapy induces autophagy and decreases lipids in THP-1 macrophage by promoting ROS-dependent nuclear translocation of TFEB. Cell Death Dis 2016; 7:e2527. [PMID: 28005078 PMCID: PMC5260986 DOI: 10.1038/cddis.2016.433] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2016] [Revised: 10/29/2016] [Accepted: 11/21/2016] [Indexed: 12/15/2022]
Abstract
Lipid catabolism disorder is the primary cause of atherosclerosis. Transcription factor EB (TFEB) prevents atherosclerosis by activating macrophage autophagy to promote lipid degradation. Hypericin-mediated sonodynamic therapy (HY-SDT) has been proved non-invasively inducing THP-1-derived macrophage apoptosis; however, it is unknown whether macrophage autophagy could be triggered by HY-SDT to influence cellular lipid catabolism via regulating TFEB. Here, we report that HY-SDT resulted in the time-dependent THP-1-derived macrophage autophagy activation through AMPK/AKT/mTOR pathway. Besides, TFEB nuclear translocation in macrophage was triggered by HY-SDT to promote autophagy activation and lysosome regeneration which enhanced lipid degradation in response to atherogenic lipid stressors. Moreover, following HY-SDT, the ABCA1 expression level was increased to promote lipid efflux in macrophage, and the expression levels of CD36 and SR-A were decreased to inhibit lipid uptake, both of which were prevented by TFEB knockdown. These results indicated that TFEB nuclear translocation activated by HY-SDT was not only the key regulator of autophagy activation and lysosome regeneration in macrophage to promote lipolysis, but also had a crucial role in reverse cholesterol transporters to decrease lipid uptake and increase lipid efflux. Reactive oxygen species (ROS) were adequately generated in macrophage by HY-SDT. Further, ROS scavenger N-acetyl-l-cysteine abolished HY-SDT-induced TFEB nuclear translocation and autophagy activation, implying that ROS were the primary upstream factors responsible for these effects during HY-SDT. In summary, our data indicate that HY-SDT decreases lipid content in macrophage by promoting ROS-dependent nuclear translocation of TFEB to influence consequent autophagy activation and cholesterol transporters. Thus, HY-SDT may be beneficial for atherosclerosis via TFEB regulation to ameliorate lipid overload in atherosclerotic plaques.
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Affiliation(s)
- Xuesong Li
- Department of Pathophysiology, Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, China
| | - Xin Zhang
- Department of Respiratory Medicine, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, China.,Department of Cardiology, The First Affiliated Hospital, Cardiovascular Institute, Harbin Medical University, Harbin, China
| | - Longbin Zheng
- Department of Pathophysiology, Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, China
| | - Jiayuan Kou
- Department of Pathophysiology, Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, China
| | - Zhaoyu Zhong
- Department of Pathophysiology, Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, China
| | - Yueqing Jiang
- Department of Pathophysiology, Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, China
| | - Wei Wang
- Department of Cardiology, The First Affiliated Hospital, Cardiovascular Institute, Harbin Medical University, Harbin, China
| | - Zengxiang Dong
- Department of Cardiology, The First Affiliated Hospital, Cardiovascular Institute, Harbin Medical University, Harbin, China
| | - Zhongni Liu
- Department of Pathophysiology, Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, China
| | - Xiaobo Han
- Department of Pathophysiology, Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, China
| | - Jing Li
- Department of Electron Microscopic Center, Basic Medical Science College, Harbin Medical University, Harbin, China
| | - Ye Tian
- Department of Pathophysiology, Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, China.,Division of Cardiology, The First Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Yajun Zhao
- Department of Pathophysiology, Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, China
| | - Liming Yang
- Department of Pathophysiology, Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, China
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Zheng L, Li Y, Li X, Kou J, Zhong Z, Jiang Y, Liu Z, Tian Y, Yang L. Combination of Hydroxyl Acetylated Curcumin and Ultrasound Induces Macrophage Autophagy with Anti-Apoptotic and Anti-Lipid Aggregation Effects. Cell Physiol Biochem 2016; 39:1746-1760. [PMID: 27744450 DOI: 10.1159/000447875] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/15/2016] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIMS Sonodynamic therapy (SDT) is considered a new approach for the treatment of atherosclerosis. We previously confirmed that hydroxyl acetylated curcumin (HAC) was a sonosensitizer. In this study, we investigated the mechanism of THP-1 macrophage apoptosis and autophagy induced by HAC mediated SDT (HAC-SDT). METHODS Cell viability was measured using a CCK-8 assay. Laser scanning confocal microscopy was used to measure the levels of intracellular reactive oxygen species (ROS), sub-cellular HAC localization, BAX and cytochrome C translocation, LC3 expression, monodansylcadaverine staining and Dil-labeled oxidized low density lipoprotein (Dil-ox-LDL) uptake. Flow cytometry was used to analyze apoptosis and autophagy via Annexin V/propidium iodide and acridine orange staining, respectively. The expression levels of apoptosis- and autophagy-related proteins were detected by Western blot. Oil red O was used to measure intracellular lipid accumulation. RESULTS We identified HAC (5.0 μg/mL) located in lysosomes, endoplasmic reticulum, Golgi apparatus and mitochondria after 4 h of incubation. Compared with other sonosensitizers (e.g., curcumin and emodin), HAC had a more obvious sonodynamic effect on macrophages. Furthermore, the mitochondrial-caspase pathway was confirmed to play a crucial role in the HAC-SDT-induced apoptosis; BAX translocated from the cytosol to the mitochondria during HAC-SDT. Subsequently, mitochondrial cytochrome C was released into the cytosol, activating the caspase cascade in a time-dependent manner. Furthermore, HAC-SDT could induce PI3K/AKT/mTOR pathway dependent autophagy, accompanied by a decrease in the lipid uptake of THP-1 macrophages. This mechanism was demonstrated by the formation of acidic vesicular organelles, the conversion of LC3 I to LC3 II, the expression of related proteins, and the attenuation of both Dil-ox-LDL and oil red O staining. Moreover, pre-treatment with the autophagy inhibitor 3-methyladenine enhanced the HAC-SDT-induced apoptosis. Additionally, HAC-SDT-induced autophagy and apoptosis were both blocked by ROS scavenger N-acetyl-l-cysteine. CONCLUSION The results suggested that autophagy not only played an inhibitory role in the process of apoptosis but also could effectively attenuate lipid aggregation in THP-1 macrophages during HAC-SDT. As important intracellular mediators, the ROS generated by HAC-SDT also played a crucial role in initiating apoptosis and autophagy.
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Affiliation(s)
- Longbin Zheng
- Department of Pathophysiology, Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, China
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Zheng Y, Liu J, Cao ML, Deng JM, Kou J. Extrication process of chlorogenic acid in Crofton weed and antibacterial mechanism of chlorogenic acid on Escherichia coli. J Environ Biol 2016; 37:1049-1055. [PMID: 29989735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Crofton weed is a perennial herb and a biological intruding species. The present study firstly used the orthogonal test to compare the differences in extraction of chlorogenic acid in leaves and stems of Crofton weed by using three kinds of solvents, namely water, ethanol and ethyl acetate. The best effect was found by using ethonolic extraction of chlorogenic acid in Crofton weed. Further, by choosing Escherichia coli as test object, in-vitro antibacterial test was conducted to study the antimicrobial activities of chlorogenic acid by testing a series of indexes before and after the interaction between chlorogenic acid and Escherichia coli, to clarify the antibacterial mechanism of chlorogenic acid on Escherichia coli. Finally, by comparing the antibacterial activities of isochlorogenic acid A on Escherichia coli, it was concluded that both chlorogenic acid and isochlorogenic acid A showed antibacterial activities against Escherichia coli, wherein chlorogenic acid had a better antibacterial effect on Escherichia coli than isochlorogenic acid A.
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15
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Kou J, Xu S, Sun T, Sun C, Guo Y, Wang C. A study of sodium oleate adsorption on Ca2+ activated quartz surface using quartz crystal microbalance with dissipation. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.minpro.2016.06.008] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [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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16
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Ma R, Li T, Cao M, Si Y, Wu X, Zhao L, Yao Z, Zhang Y, Fang S, Deng R, Novakovic VA, Bi Y, Kou J, Yu B, Yang S, Wang J, Zhou J, Shi J. Extracellular DNA traps released by acute promyelocytic leukemia cells through autophagy. Cell Death Dis 2016; 7:e2283. [PMID: 27362801 PMCID: PMC5108337 DOI: 10.1038/cddis.2016.186] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Revised: 05/27/2016] [Accepted: 05/31/2016] [Indexed: 12/30/2022]
Abstract
Acute promyelocytic leukemia (APL) cells exhibit disrupted regulation of cell death and differentiation, and therefore the fate of these leukemic cells is unclear. Here, we provide the first evidence that a small percentage of APL cells undergo a novel cell death pathway by releasing extracellular DNA traps (ETs) in untreated patients. Both APL and NB4 cells stimulated with APL serum had nuclear budding of vesicles filled with chromatin that leaked to the extracellular space when nuclear and cell membranes ruptured. Using immunofluorescence, we found that NB4 cells undergoing ETosis extruded lattice-like structures with a DNA-histone backbone. During all-trans retinoic acid (ATRA)-induced cell differentiation, a subset of NB4 cells underwent ETosis at days 1 and 3 of treatment. The levels of tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) were significantly elevated at 3 days, and combined treatment with TNF-α and IL-6 stimulated NB4 cells to release ETs. Furthermore, inhibition of autophagy by pharmacological inhibitors or by small interfering RNA against Atg7 attenuated LC3 autophagy formation and significantly decreased ET generation. Our results identify a previously unrecognized mechanism for death in promyelocytes and suggest that ATRA may accelerate ET release through increased cytokines and autophagosome formation. Targeting this cellular death pathway in addition to conventional chemotherapy may provide new therapeutic modalities for APL.
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Affiliation(s)
- R Ma
- Department of Hematology of the First Hospital, Harbin Medical University, Harbin, China
- The Key Laboratory of Myocardial Ischemia, Ministry of Education, Heilongjiang Province, Harbin, China
| | - T Li
- Department of Hematology of the First Hospital, Harbin Medical University, Harbin, China
- The Key Laboratory of Myocardial Ischemia, Ministry of Education, Heilongjiang Province, Harbin, China
| | - M Cao
- Department of Hematology of the First Hospital, Harbin Medical University, Harbin, China
- The Key Laboratory of Myocardial Ischemia, Ministry of Education, Heilongjiang Province, Harbin, China
| | - Y Si
- Department of Hematology of the First Hospital, Harbin Medical University, Harbin, China
- The Key Laboratory of Myocardial Ischemia, Ministry of Education, Heilongjiang Province, Harbin, China
| | - X Wu
- Department of Hematology of the First Hospital, Harbin Medical University, Harbin, China
| | - L Zhao
- Department of Hematology of the First Hospital, Harbin Medical University, Harbin, China
| | - Z Yao
- Department of Hematology of the First Hospital, Harbin Medical University, Harbin, China
| | - Y Zhang
- Department of Hematology of the First Hospital, Harbin Medical University, Harbin, China
| | - S Fang
- The Key Laboratory of Myocardial Ischemia, Ministry of Education, Heilongjiang Province, Harbin, China
| | - R Deng
- Department of Hematology of the First Hospital, Harbin Medical University, Harbin, China
| | - V A Novakovic
- Department of Research, Brigham and Women's Hospital, VA Boston Healthcare System, and Harvard Medical School, Boston, MA, USA
| | - Y Bi
- Department of Cardiology of the First Hospital, Harbin Medical University, Harbin, China
| | - J Kou
- Department of Cardiology of the Second Hospital, Harbin Medical University, Harbin, China
| | - B Yu
- The Key Laboratory of Myocardial Ischemia, Ministry of Education, Heilongjiang Province, Harbin, China
| | - S Yang
- The Key Laboratory of Myocardial Ischemia, Ministry of Education, Heilongjiang Province, Harbin, China
| | - J Wang
- Department of Hematology of the Second Hospital, Harbin Medical University, Harbin, China
| | - J Zhou
- Department of Hematology of the First Hospital, Harbin Medical University, Harbin, China
| | - J Shi
- Department of Hematology of the First Hospital, Harbin Medical University, Harbin, China
- Department of Surgery, Brigham and Women's Hospital, VA Boston Healthcare System, and Harvard Medical School, Boston, MA, USA
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Zheng X, Wu J, Shao Q, Li X, Kou J, Zhu X, Zhong Z, Jiang Y, Liu Z, Li H, Tian Y, Yang L. Apoptosis of THP-1 Macrophages Induced by Pseudohypericin-Mediated Sonodynamic Therapy Through the Mitochondria-Caspase Pathway. Cell Physiol Biochem 2016; 38:545-57. [PMID: 26828938 DOI: 10.1159/000438649] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/18/2015] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIMS Pseudohypericin (P-HY) and its congener hypericin are the major hydroxylated phenanthroperylenediones present in Hypericum species. Our previous study indicated that hypericin was able to function as a sonosensitizer. The potential use of P-HY as a sonosensitizer for sonodynamic therapy (SDT) requires further exploration. Thus, this study aimed to investigate the effects of P-HY-SDT on THP-1 macrophages. METHODS THP-1 macrophages were incubated with P-HY, and cell viability was measured using a CCK-8 assay. Fluorescence microscopy assessed the intracellular reactive oxygen species (ROS), mitochondrial membrane potential (ΔΨm ) and mitochondrial permeability transition pore (mPTP) opening. Apoptotic and necrotic cell levels were measured by the flow cytometry analysis. Western blots were employed to assay BAX, Cytochrome C expression and apoptosis-related proteins. RESULTS P-HY-SDT induced THP-1 macrophage apoptosis. The levels of ROS were significantly increased in the SDT group, resulting in both mPTP opening and ΔΨm loss, which led to apoptosis. In addition, the translocation of BAX, release of Cytochrome C and the upregulated expression of apoptosis-related proteins after P-HY-SDT were observed, all of which were reversed by N-acetyl cysteine (NAC). CONCLUSION P-HY-SDT induced THP-1 macrophage apoptosis through the mitochondria-caspase pathway via ROS generation, the translocation of BAX and the release of Cytochrome C to regulate the mPTP opening.
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Affiliation(s)
- Xiufeng Zheng
- Department of Pathophysiology, Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, PR China
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18
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Zhu X, Wang H, Zheng L, Zhong Z, Li X, Zhao J, Kou J, Jiang Y, Zheng X, Liu Z, Li H, Cao W, Tian Y, Wang Y, Yang L. Upconversion nanoparticle-mediated photodynamic therapy induces THP-1 macrophage apoptosis via ROS bursts and activation of the mitochondrial caspase pathway. Int J Nanomedicine 2015; 10:3719-36. [PMID: 26045663 PMCID: PMC4447170 DOI: 10.2147/ijn.s82162] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Atherosclerosis (AS) is the most vital cardiovascular disease, which poses a great threat to human health. Macrophages play an important role in the progression of AS. Photodynamic therapy (PDT) has emerged as a useful therapeutic modality not only in the treatment of cancer but also in the treatment of AS. The purpose of this study was to determine the molecular mechanisms underlying the activity of PDT, using mesoporous-silica-coated upconversion fluorescent nanoparticles encapsulating chlorin e6 (UCNPs-Ce6) in the induction of apoptosis in THP-1 macrophages. Here, we investigated the ability of UCNPs-Ce6-mediated PDT to induce THP-1 macrophage apoptosis by facilitating the induction of reactive oxygen species (ROS) and regulation of mitochondrial permeability transition pore (MPTP) to depolarize mitochondrial membrane potential (MMP). Both Bax translocation and the release of cytochrome C were examined using immunofluorescence and Western blotting. Our results indicated that the levels of ROS were significantly increased in the PDT group, resulting in both MPTP opening and MMP depolarization, which led to apoptosis. In addition, immunofluorescence and Western blotting revealed that PDT induced both Bax translocation and the release of cytochrome C, as well as upregulation of cleaved caspase-9, cleaved caspase-3, and cleaved poly(ADP-ribose) polymerase. Therefore, we demonstrated that UCNPs-Ce6-mediated PDT induces apoptosis in THP-1 macrophages via ROS bursts. The proapoptotic factor Bax subsequently translocates from the cytosol to the mitochondria, resulting in the MPTP opening and cytochrome C release. This study demonstrated the great potential of UCNPs-Ce6-mediated PDT in the treatment of AS.
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Affiliation(s)
- Xing Zhu
- Department of Pathophysiology, Harbin Medical University, Harbin, People's Republic of China
| | - Hao Wang
- Materials Physics and Chemistry Department, Harbin Institute of Technology, Harbin, People's Republic of China
| | - Longbin Zheng
- Department of Pathophysiology, Harbin Medical University, Harbin, People's Republic of China
| | - Zhaoyu Zhong
- Department of Pathophysiology, Harbin Medical University, Harbin, People's Republic of China
| | - Xuesong Li
- Department of Pathophysiology, Harbin Medical University, Harbin, People's Republic of China
| | - Jing Zhao
- Blood Transfusion Department, Jining No 1 People's Hospital, Jining, People's Republic of China
| | - Jiayuan Kou
- Department of Pathophysiology, Harbin Medical University, Harbin, People's Republic of China
| | - Yueqing Jiang
- Department of Pathophysiology, Harbin Medical University, Harbin, People's Republic of China
| | - Xiufeng Zheng
- Department of Pathophysiology, Harbin Medical University, Harbin, People's Republic of China
| | - Zhongni Liu
- Department of Pathophysiology, Harbin Medical University, Harbin, People's Republic of China
| | - Hongxia Li
- Department of Pathophysiology, Harbin Medical University, Harbin, People's Republic of China
| | - Wenwu Cao
- Laboratory of Sono- and Photo-theranostic Technologies, Harbin Institute of Technology, Harbin, People's Republic of China ; Materials Research Institute, The Pennsylvania State University, University Park, PA, USA
| | - Ye Tian
- Department of Pathophysiology, Harbin Medical University, Harbin, People's Republic of China ; Division of Cardiology, The First Affiliated Hospital, Harbin Medical University, Harbin, People's Republic of China
| | - You Wang
- Materials Physics and Chemistry Department, Harbin Institute of Technology, Harbin, People's Republic of China
| | - Liming Yang
- Department of Pathophysiology, Harbin Medical University, Harbin, People's Republic of China
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Li X, Gao L, Zheng L, Kou J, Zhu X, Jiang Y, Zhong Z, Dan J, Xu H, Yang Y, Li H, Shi S, Cao W, Zhao Y, Tian Y, Yang L. The efficacy and mechanism of apoptosis induction by hypericin-mediated sonodynamic therapy in THP-1 macrophages. Int J Nanomedicine 2015; 10:821-38. [PMID: 25653524 PMCID: PMC4309797 DOI: 10.2147/ijn.s75398] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Purpose To investigate the sonoactivity of hypericin (HY), together with its sonodynamic effect on THP-1 macrophages and the underlying mechanism. Materials and methods CCK-8 was used to examine cell viability. Confocal laser scanning microscopy was performed to assess the localization of HY in cells, reactive oxygen species (ROS) generation, and opening of the mitochondrial permeability transition pore (mPTP) after different treatments. Apoptosis was analyzed using Hoechst–propidium iodide and transmission electron microscopy. Mitochondrial membrane potential (ΔΨm) collapse was detected via fluorescence microscopy. Lipoprotein oxidation was determined in malondialdehyde (MDA) assays. Western blotting was conducted to determine the translocation of BAX and cytochrome C and the expression of apoptosis-related proteins. Results HY was sublocalized among the nuclei and the mitochondria, endoplasmic reticulum, Golgi apparatus, and lysosome in the cytosol of THP-1 macrophages. Under low-intensity ultrasound irradiation, HY significantly decreased cell viability and induced apoptosis. Furthermore, greater ROS generation, higher MDA levels, and greater ΔΨm loss were observed in the sonodynamic therapy (SDT) group. Both ROS generation and MDA levels were significantly reduced by the ROS scavenger N-acetyl cysteine (NAC) and the singlet oxygen scavenger sodium azide. Most of the loss of ΔΨm was inhibited by pretreatment with NAC, sodium azide, and the mPTP inhibitor cyclosporin A (CsA). mPTP opening was induced upon SDT but was reduced by pretreatment with bongkrekic acid, 4,4′-diisothiocyanatostilbene-2,2′-disulfonic acid disodium, CsA, and NAC. Western blot analyses revealed translocation of BAX and cytochrome C, downregulated expression of Bcl-2, and upregulated expression of cleaved caspase-9, cleaved caspase-3, and cleaved poly(ADP-ribose) polymerase in the SDT group, which were reversed by NAC. Conclusion HY mediated SDT-induced apoptosis in THP-1 macrophages via ROS generation. Then, the proapoptotic factor BAX translocated from the cytosol to the mitochondria, increasing the ratio of BAX/Bcl-2, and the mPTP opened to release cytochrome C. This study demonstrated the great potential of HY-mediated SDT for treating atherosclerosis.
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Affiliation(s)
- Xuesong Li
- Department of Pathophysiology, Harbin Medical University, Harbin, People's Republic of China
| | - Lei Gao
- Electron Microscopy Centre, Harbin Medical University, Harbin, People's Republic of China
| | - Longbin Zheng
- Department of Pathophysiology, Harbin Medical University, Harbin, People's Republic of China
| | - Jiayuan Kou
- Department of Pathophysiology, Harbin Medical University, Harbin, People's Republic of China
| | - Xing Zhu
- Department of Pathophysiology, Harbin Medical University, Harbin, People's Republic of China
| | - Yueqing Jiang
- Department of Pathophysiology, Harbin Medical University, Harbin, People's Republic of China
| | - Zhaoyu Zhong
- Department of Pathophysiology, Harbin Medical University, Harbin, People's Republic of China
| | - Juhua Dan
- Department of Pathophysiology, Harbin Medical University, Harbin, People's Republic of China
| | - Haobo Xu
- Division of Cardiology, The First Affiliated Hospital, Harbin Medical University, Harbin, People's Republic of China
| | - Yang Yang
- Division of Cardiology, The First Affiliated Hospital, Harbin Medical University, Harbin, People's Republic of China
| | - Hong Li
- Department of Pathophysiology, Harbin Medical University, Harbin, People's Republic of China
| | - Sa Shi
- Department of Pathophysiology, Harbin Medical University, Harbin, People's Republic of China
| | - Wenwu Cao
- Laboratory of Sono- and Photo-theranostic Technologies, Harbin Institute of Technology, Harbin, People's Republic of China ; Materials Research Institute, The Pennsylvania State University, University Park, PA, USA
| | - Yajun Zhao
- Department of Pathophysiology, Harbin Medical University, Harbin, People's Republic of China
| | - Ye Tian
- Department of Pathophysiology, Harbin Medical University, Harbin, People's Republic of China ; Division of Cardiology, The First Affiliated Hospital, Harbin Medical University, Harbin, People's Republic of China
| | - Liming Yang
- Department of Pathophysiology, Harbin Medical University, Harbin, People's Republic of China
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Lin Y, Jia R, Liu Y, Gao Y, Zeng X, Kou J, Yu B. Diosgenin inhibits superoxide generation in FMLP-activated mouse neutrophils via multiple pathways. Free Radic Res 2014; 48:1485-93. [DOI: 10.3109/10715762.2014.966705] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Song CL, Liu HH, Kou J, Lv L, Li L, Wang WX, Wang JW. Expression profile of insulin-like growth factor system genes in muscle tissues during the postnatal development growth stage in ducks. Genet Mol Res 2013; 12:4500-14. [PMID: 23766025 DOI: 10.4238/2013.may.6.3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Insulin-like growth factors (IGFs) are regulators that modulate the proliferation and differentiation of muscle tissues. We quantified the messenger RNA (mRNA) expression of IGF-I, IGF-II, and type I and II IGF receptors (IGF-IR and IGF-IIR) in muscle tissues including the breast, leg, and myocardium during an early postnatal development growth stage (post-hatching weeks 1-8) in ducks. The results showed a significant age-related change in mRNA in these muscle tissues. In breast muscle, the developmental expression of IGF-I and IGF-II was highest during week 1 but decreased quickly and maintained a relatively lower level. Leg muscle had the highest mRNA expression of IGF-I and IGF-II genes at week 3. In myocardial tissues, the expression level of IGF-IR and IGF-IIR genes exhibited a "rise-decline" developmental trend. The expression patterns of IGF-I/IGF-IR and IGF-II/IGF-IIR were different between weeks 4 and 6. The same expression pattern was observed for IGF-I and IGF-IR; however, it was different from that observed for IGF-II and IGF-IIR. Our results showed a negative correlation between IGF-II mRNA expression and leg muscle weight at week 4 (P < 0.05). A negative correlation was also found between IGF-II mRNA expression and breast muscle weight (P < 0.01), and a positive correlation was found between IGF-IR expression and breast muscle weight. At week 6, a positive correlation was found between IGF-IR expression and breast muscle weight. However, at week 8, a negative correlation was found between IGF-IR expression and breast muscle weight. The results showed that the expression of IGF mRNA in duck tissues exhibits a specific developmental trend and an age-related pattern, suggesting that the regulation mechanism of these 4 genes in proliferation and differentiation of muscle tissues differed.
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Affiliation(s)
- C-L Song
- Institute of Animal Breeding and Genetics, Sichuan Agricultural University, Ya'an, Sichuan Province, China
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Kou J, Wang W, Liu H, Pan Z, He T, Hu J, Li L, Wang J. Comparison and characteristics of the formation of different adipose tissues in ducks during early growth. Poult Sci 2012; 91:2588-97. [DOI: 10.3382/ps.2012-02273] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Bower SM, Kou J, Saylor JR. A method for the temperature calibration of an infrared camera using water as a radiative source. Rev Sci Instrum 2009; 80:095107. [PMID: 19791964 DOI: 10.1063/1.3213075] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Presented here is an effective low-cost method for the temperature calibration of infrared cameras, for applications in the 0-100 degrees C range. The calibration of image gray level intensity to temperature is achieved by imaging an upwelling flow of water, the temperature of which is measured with a thermistor probe. The upwelling flow is created by a diffuser located below the water surface of a constant temperature water bath. The thermistor probe is kept immediately below the surface, and the distance from the diffuser outlet to the surface is adjusted so that the deformation of the water surface on account of the flow is small, yet the difference between the surface temperature seen by the camera and the bulk temperature measured by the thermistor is also small. The benefit of this method compared to typical calibration procedures is that, without sacrificing the quality of the calibration, relatively expensive commercial blackbodies are replaced by water as the radiative source (epsilon approximately 0.98 for the wavelengths considered here). A heat transfer analysis is provided, which improves the accuracy of the calibration method and also provides the user with guidance to further increases in accuracy of the method.
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Affiliation(s)
- S M Bower
- Department of Mechanical Engineering, Clemson University, Clemson, South Carolina 29634-0921, USA
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Kou J, Saylor JR. A method for removing surfactants from an air/water interface. Rev Sci Instrum 2008; 79:123907. [PMID: 19123579 DOI: 10.1063/1.3053316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The study of heat, mass, and momentum transport across an air/water interface is an aspect of fluid mechanics where the presence of surfactant monolayers can play a significant role. Experimental studies of air/water transport typically require a method for cleaning the air/water interface so that it is free from any contaminating surfactant monolayer. This may be for the sake of running an experiment under clean surface conditions, or to clean the surface prior to deposition of a known surfactant. Herein a method is described for maintaining a clean air/water interface during conditions of finite air flow over the water surface. The unique aspect of this method is its ability to maintain clean surfaces while experiments are conducted.
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Affiliation(s)
- J Kou
- Department of Mechanical Engineering, Clemson University, Clemson, South Carolina 29634-0921, USA
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Abstract
Bioassay-guided investigation was performed to identify the active constituents from a methanol extract of Polygala japonica, a folk medicinal plant widely used in China to treat inflammatory diseases. The n-BuOH and EtOAc fractions of the P. japonica methanol extract, which show significant anti-inflammatory activity in in vivo test, were further subjected to column chromatography to afford six triterpene glycosides, marked here as saponins 1-6. All compounds were evaluated for their anti-inflammatory activity in the carageenan-induced mouse paw edema test, and saponins 1, 4 and 5 showed significantly anti-inflammatory effects on both phases of carageenan-induced acute paw edema in mice. Saponin 5 was also found to significantly inhibit the production of inflammatory mediators - nitric oxide (NO) in LPS-stimulated RAW264.7 macrophages, with no obvious effects on macrophage viability.
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Affiliation(s)
- H Wang
- Department of Traditional Chinese Prescription, China Pharmaceutical University, Box C-09, No. 1 Shennong Road, Nanjing 210038, PR China
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Abstract
One requirement for licensure of a vaccine in the United States is demonstration by the manufacturer of consistently produced lots of vaccine. Demonstration of consistency of manufacturing can be viewed as a multigroup equivalence problem. The standard statistical procedures for evaluating equivalence assume normally distributed data and define equivalence margins with respect to group means. As an alternative approach, we define a measure of the similarity among group distributions and their nonparametric estimators. Through computer simulations we explore the statistical properties of an equivalence test based on this estimator and compare them to the standard methods. Preliminary work suggests that a test of similarity can be useful in demonstrating equivalence when distributions are not normal or when there are differences in scale or shape. It appears to detect departures from equivalence that are not reflected by differences among group means.
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Affiliation(s)
- P A Lachenbruch
- U.S. FDA/Center for Biologics Evaluation and Research, Rockville, Maryland 20852, USA.
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Abstract
Photoion yields from gaseous fullerenes, C(60) and C(70), for production of singly and doubly charged ions are measured by mass spectrometry combined with tunable synchrotron radiation at hnu=25-150 eV. Since the signal of triply or highly charged ions is very weak, the total photoionization yield curve can be estimated from the sum of the yields of the singly and doubly charged ions. A distinct feature appears in the resultant curve of C(60) which is absent in the calculated total photoabsorption cross section previously reported. This difference is attributed to C(60) (2+) ions chiefly produced by spectator Auger ionization of the shape resonance states followed by tunneling of the trapped electron or by cascade Auger ionization. Ratios between the yields of doubly and singly charged ions for C(60) and C(70) are larger than unity at hnu>50 eV. These ratios are quite different from those reported in the experiments using electron impact ionization.
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Affiliation(s)
- J Kou
- Department of Vacuum UV Photo-Science, The Institute for Molecular Science, Myodaiji, Okazaki 444-8585, Japan
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Kou J, Mori T, Ono M, Haruyama Y, Kubozono Y, Mitsuke K. Molecular- and atomic-like photoionization of C60 in the extreme ultraviolet. Chem Phys Lett 2003. [DOI: 10.1016/s0009-2614(03)00613-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Abstract
STUDY DESIGN A case-control retrospective analysis comparing patients who developed a postoperative spinal epidural hematoma with patients who did not develop this complication. OBJECTIVES To identify risk factors for the development of an epidural hematoma following spinal surgery. SUMMARY OF BACKGROUND DATA Neurologic deterioration following spinal surgery is a rare but devastating complication. Epidural hematomas should be suspected in the patient who demonstrates a new postoperative neurologic deficit. The risk factors that predispose a patient to a postoperative spinal epidural hematoma have not been identified. METHODS Patients who underwent spinal surgery at a single institution over a 10-year period were retrospectively reviewed. Twelve patients who demonstrated neurologic deterioration after surgery and required surgical decompression because of an epidural hematoma were identified. All cases involved lumber laminectomies. A total of 404 consecutive patients that underwent lumbar decompression and did not develop an epidural hematoma formed the control group. Factors postulated to increase the risk of postoperative spinal epidural hematoma were compared between the two groups using logistic regression. RESULTS Multilevel procedures (P = 0.037) and the presence of a preoperative coagulopathy (P < 0.001) were significant risk factors. Age, body mass index, perioperative durotomies, and postoperative drains were not statistically significant risk factors. CONCLUSIONS Patients who require multilevel lumbar procedures and/or have a preoperative coagulopathy are at a significantly higher risk for developing a postoperative epidural hematoma.
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Affiliation(s)
- J Kou
- Department of Orthopaedic Surgery, William Beaumont Hospital, Royal Oak, Michigan, USA
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Wang P, Wang F, Sun Y, Wang J, Kou J, Huang Y, Kang X, Wan G, Liang Y, Wang Q. Study on the transmission threshold value of bancroftian filariasis. Chin Med J (Engl) 1998; 111:261-4. [PMID: 10374430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023] Open
Abstract
OBJECTIVE To elucidate the transmission dynamic and epidemic trend of bancroftian filariasis occurred under the condition with no control measure taken 5 years after elimination of filariasis. METHODS A 10-year longitudinal observation (from 1984 to 1994) was made in Huayuan Village in Shengli Township of Tancheng County, which used to be a high bancroftian filariasis-endemic area in southern part of Shandong Province. RESULTS The microfilarial rate decreased from 0.56% before the study to 0.12% after the study and 8 out of the 9 previous microfilaria-positive cases became negative gradually. During the study period, 6 new microfilaremia cases were detected, 5 of which became negative naturally within 3 to 4 years. Eighty-eight point eight nine per cent of the detected patients with microfilaremia converted into IgG4-negative after 10 years. The natural infective rate of vectors decreased year by year and became zero by the tenth year of the study, the annual transmission potency decreased also from 3.47 to zero by the tenth year. CONCLUSIONS It showed that under the local natural environment the biting rate representing the vector density which was obtained by capture method was from 24.1 to 52.5 person/night among the residents who did not use mosquito nets, and 13.5 to 21 person/night among the residents who used mosquito nets. The microfilarial rate of 0.56% in population with the average microfilarial density of 6.6 to 20.7 capita/60 microliters ear blood of residual microfilaria-positive patients might be considered as the terminal threshold of transmission.
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Affiliation(s)
- P Wang
- Shandong Institute of Parasitic Diseases, Jining, China
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Kou J, Yu Z, Tian J, Ma S, Yan Y. [Effects of yizhi pills on memory, superoxide dismutase and malondialdehyde of brain and immunity in mice]. Zhongguo Zhong Yao Za Zhi 1997; 22:493-6 inside back cover. [PMID: 11038919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
Passive avoidance tests have shown that Yizhi Pills (YZ) markedly improve the memory of normal mice at a dose of 100 mg/kg after oral administration for fifteen days, and significantly reverse the scopolamine, NaNO2 and EtOH-induced disruptions of memory retention in mice at doses of 100, 200, 500 mg/kg after oral administration for five days. In aged mice induced by D-galactose, YZ also significantly improve the impaired memory, increase the activity of SOD and decrease the content of MDA in brain. All these effects were observed at doses of 200, 500 mg/kg after oral administration for forty-one days. YZ significantly promote blood carbon particle clearance, enhance hemolysin antibody in immunodepressed mice induced by cyclophosphamide, and increase earswelling in immunodepressed mice induced by prednisolonum.
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Affiliation(s)
- J Kou
- Institute of Chinese Materia Medica, China Pharmaceutical University, Nanjing
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Yu Z, Zhang G, Dai Y, Kou J, Dou C, Lu R. [Pharmacological study on the compatibility of cortex Cinnamomi with Halloysitum Rubrum]. Zhongguo Zhong Yao Za Zhi 1997; 22:309-12 inside back cover. [PMID: 11038972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
The decoction of Cortex Cinnamomi (CC, 1 g/kg p.o.) and Halloysitum Rubrum (HR, 3 g/kg p.o.) or the combination of the two drugs (4 g/kg p.o., CC 1 g/kg, HR 3 g/kg) could antagonize the diarrhea caused by p.o. water ex tract of Radix et Rhizoma Rhei in mice; and inhibit the platelet aggregation induced by ADP in vitro. Meanwhile, the effect of the combination of the two drugs was not different from that of each single one. In addition, CC was able to inhibit the spontaneous movement of intestine in situ and showed an analgesic effect (hot-plate method) in mice; HR was ineffective in these aspects and did not reduce the effect of CC. CC(20 g/kg p.o., i.p. or i.v.) exhibited very strong toxicity in mice, while HR(60 g/kg p.o., i.p. or i.v.) was nontoxic. When the two drugs were used together, the toxicity was markedly reduced.
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Affiliation(s)
- Z Yu
- China Pharmaceutical University, Nanjing
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Abstract
OBJECTIVES The purpose of this study was to evaluate Children's Village, a life safety education facility for children. SETTING The study took place in Washington County, Maryland, a rural county. METHODS Eight elementary schools with 20 second grade classrooms (410 students aged 7 and 8) were selected to participate. Using a quasiexperimental design, tests were administered to two cohorts of children before (pretest) and after (post-test) they attended the Children's Village during 1993-4. Parent and teacher surveys were also completed after the program. RESULTS Among children who attended in December 1993-January 1994, there was a significant improvement in average test scores between the pretest (58% correct) and post-test (78%). Among children who attended in April 1994, there also was a significant improvement in test scores between pretest (74%) and post-test (85%). Among parents, 70% reported that their child learned a great deal at Children's Village and 33% reported having made changes in their home as a result. The parent survey also revealed that 25% of children and 35% of adults did not always wear their seat belts, and 74% of children did not always wear bicycle helmets. Teachers' responses to the program were generally positive. CONCLUSIONS Children's Village brought together an extensive network of community leaders, parents, and teachers dedicated to safety education of children. The curriculum had a positive impact on children's knowledge and, to a lesser extent, on parents' safety practices. Program impact could be enhanced by more emphasis on automobile restraints and helmets (behaviors that parents reported were not consistently practiced) and by expanding the village services to parents as well as children. Others considering creating similar programs need to identify community leaders willing to commit the time, effort, and resources required to develop and sustain such programs.
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Affiliation(s)
- A C Gielen
- Johns Hopkins University School of Public Health, Center for Injury Research and Policy, Baltimore, USA
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Wang F, Yu Z, Kou J, Li C, Wang J. Detection of plasmodium falciparum lactate dehydrogenase. A promising approach to quick diagnosis of malaria. Chin Med J (Engl) 1995; 108:875-7. [PMID: 8585985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Affiliation(s)
- F Wang
- Shandong Institute of Parasitic Disease
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Ganbo T, Hisamatsu K, Mizukoshi A, Inoue H, Kikushima K, Kou J, Kozuka Y, Murakami Y. Effect of ibudilast on ciliary activity of human paranasal sinus mucosa in vitro. Arzneimittelforschung 1995; 45:883-6. [PMID: 7575753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The effect of ibudilast (CAS 50847-11-5, 3-isobutyryl-2-isopropylpyrazolo[1,5-a]pyridine, KC-404), an anti-asthmatic drug, on ciliary beat frequency (CBF) of human paranasal sinus mucosa was examined in vitro. Ciliary activation was observed after a 10-min exposure to 4.6 x 10(-6) mol/l ibudilast. Ibudilast dose-dependently increase CBF at the concentrations ranging from 4.6 x 10(-7) mol/l to 4.6 x 10(-5) mol/l. Propranolol inhibited ciliary activity induced by ibudilast; however, neither indometacin nor verapamil affected the activation of ibudilast on CBF. Platelet activating factor (PAF) and Leukotriene D4 (LTD4) are chemical mediators inducing mucosal dysfunction and damage. Ibudilast prevented ciliary inhibition induced by PAF and LTD4. These findings indicated that ibudilast activates CBF and inhibits the effect of PAF and LTD4 on ciliated cells, and consequently improves the pathogenesis of allergic disorders such as the inhibited mucociliary transport system and airway hyperresponsiveness.
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Affiliation(s)
- T Ganbo
- Department of Otorhinolaryngology, Yamanashi Medical University, Japan
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Abstract
In determining intestinal wall permeabilities, several mass transport models may be applied to analyze the results from external perfusion experiments. The appropriateness of any given model depends on the applicability of the model assumptions to the experimental system. This report compares several mass transport models with respect to their assumptions and applicability to a particular experimental design. The models are shown to differ in their assumptions regarding convection and diffusion in the perfusing fluid. However, since the wall permeability is an unknown parameter in each model and is estimated from the data, all of the models fit the mass transfer results reasonably well, despite fundamentally different assumptions. However, the determined permeabilities differ. Residence time distribution analysis of the experimental system is more sensitive to the model assumptions. It is shown that, in a particular experimental system, laminar flow in a cylindrical tube is the most appropriate model. The model also has the advantage of implicitly accounting for the convection-diffusion problem in the perfusing fluid. Hence, the diffusion layer thickness is not estimated from the data. With the hydrodynamics defined, the relative permeabilities resulting from the application of the several models to the data can be interpreted. The wall permeability determined in the suggested manner provides an estimate of the limiting assistance under perfect mixing conditions.
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