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Ren CX, Xu GX, Dai DQ, Lin L, Sun Y, Liu QS. Cross-site prognosis prediction for nasopharyngeal carcinoma from incomplete multi-modal data. Med Image Anal 2024; 93:103103. [PMID: 38368752 DOI: 10.1016/j.media.2024.103103] [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: 08/31/2022] [Revised: 12/05/2023] [Accepted: 02/05/2024] [Indexed: 02/20/2024]
Abstract
Accurate prognosis prediction for nasopharyngeal carcinoma based on magnetic resonance (MR) images assists in the guidance of treatment intensity, thus reducing the risk of recurrence and death. To reduce repeated labor and sufficiently explore domain knowledge, aggregating labeled/annotated data from external sites enables us to train an intelligent model for a clinical site with unlabeled data. However, this task suffers from the challenges of incomplete multi-modal examination data fusion and image data heterogeneity among sites. This paper proposes a cross-site survival analysis method for prognosis prediction of nasopharyngeal carcinoma from domain adaptation viewpoint. Utilizing a Cox model as the basic framework, our method equips it with a cross-attention based multi-modal fusion regularization. This regularization model effectively fuses the multi-modal information from multi-parametric MR images and clinical features onto a domain-adaptive space, despite the absence of some modalities. To enhance the feature discrimination, we also extend the contrastive learning technique to censored data cases. Compared with the conventional approaches which directly deploy a trained survival model in a new site, our method achieves superior prognosis prediction performance in cross-site validation experiments. These results highlight the key role of cross-site adaptability of our method and support its value in clinical practice.
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Affiliation(s)
- Chuan-Xian Ren
- School of Mathematics, Sun Yat-sen University, Guangzhou 510275, China.
| | - Geng-Xin Xu
- School of Mathematics, Sun Yat-sen University, Guangzhou 510275, China
| | - Dao-Qing Dai
- School of Mathematics, Sun Yat-sen University, Guangzhou 510275, China
| | - Li Lin
- Department of Radiation Oncology, 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 510060, China
| | - Ying Sun
- Department of Radiation Oncology, 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 510060, China
| | - Qing-Shan Liu
- School of Computer Science, Nanjing University of Posts and Telecommunications, Nanjing 210023, China
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Yang W, Wu QQ, Yang L, Chen YJ, Jiang RQ, Zou L, Liu QS, Shi GY, Cao J, Yang XC, Sun J. Awake rabbit model of ischemic spinal cord injury with delayed paraplegia: The role of ambient temperature. Animal Model Exp Med 2023. [PMID: 37697489 DOI: 10.1002/ame2.12346] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Accepted: 08/09/2023] [Indexed: 09/13/2023] Open
Abstract
BACKGROUND Paraplegia after spinal cord ischemia is a devastating condition in the clinic. Here, we develop an awake rabbit model of spinal cord ischemia with delayed paraplegia and explore the influence of ambient temperature on the outcomes after injury. METHODS A total of 47 male rabbits were involved in the present study. Transient spinal cord ischemia was induced by occluding the infrarenal abdominal aorta of awake rabbits at different ambient temperatures. To find the optimal conditions for developing delayed paraplegia, hindlimb motor function after ischemia was evaluated between experiments. RESULTS The onset and magnitude of ischemic injury varied with the ambient temperature maintained during the peri-ischemia period. More serious spinal cord injury occurred when ischemia was induced at higher temperatures. At 18°C, 25-minute ischemia resulted in 74% of rabbits developing delayed paraplegia. At a temperature of 28°C or higher, most of the animals developed acute paraplegia immediately. While at 13°C, rabbits usually regained normal motor function without paraplegia. CONCLUSION This awake rabbit model is highly reproducible and will be helpful in future studies of delayed paraplegia after spinal cord ischemia. The ambient temperature must be considered while using this model during investigation of therapeutic interventions.
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Affiliation(s)
- Wang Yang
- School of Biomedical Engineering and Medical Imaging, Army Medical University, Chongqing, China
- Army Health Service Training Base, Army Medical University, Chongqing, China
| | - Qian-Qian Wu
- School of Biomedical Engineering and Medical Imaging, Army Medical University, Chongqing, China
| | - Lu Yang
- School of Biomedical Engineering and Medical Imaging, Army Medical University, Chongqing, China
| | - Yu-Jie Chen
- Department of Neurosurgery, Southwest Hospital, Army Medical University, Chongqing, China
| | - Ren-Qing Jiang
- Army Health Service Training Base, Army Medical University, Chongqing, China
| | - Ling Zou
- School of Biomedical Engineering and Medical Imaging, Army Medical University, Chongqing, China
| | - Qing-Shan Liu
- School of Biomedical Engineering and Medical Imaging, Army Medical University, Chongqing, China
| | - Guang-You Shi
- School of Biomedical Engineering and Medical Imaging, Army Medical University, Chongqing, China
| | - Jiang Cao
- School of Biomedical Engineering and Medical Imaging, Army Medical University, Chongqing, China
| | - Xiao-Chao Yang
- School of Biomedical Engineering and Medical Imaging, Army Medical University, Chongqing, China
| | - Jian Sun
- School of Biomedical Engineering and Medical Imaging, Army Medical University, Chongqing, China
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Wang J, Gu W, Chen X, Yang M, Chen J, Zhao M, Liu QS. Electrical conductivity and refractive index of binary ionic liquid mixtures with diethyl carbonate, dimethyl carbonate and propylene carbonate. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121598] [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: 03/17/2023]
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Ai YW, Du Y, Chen L, Liu SH, Liu QS, Cheng Y. Brain Inflammatory Marker Abnormalities in Major Psychiatric Diseases: a Systematic Review of Postmortem Brain Studies. Mol Neurobiol 2023; 60:2116-2134. [PMID: 36600081 DOI: 10.1007/s12035-022-03199-2] [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: 10/15/2022] [Accepted: 12/23/2022] [Indexed: 01/06/2023]
Abstract
Schizophrenia (SCZ), bipolar disorder (BD), and major depressive disorder (MDD) are common neuropsychiatric disorders that lead to neuroinflammation in the pathogenesis. It is possible to further explore the connection between inflammation in the brain and SCZ, BD, and MDD. Therefore, we systematically reviewed PubMed and Web of Science on brain inflammatory markers measured in SCZ, BD, and MDD postmortem brains. Out of 2166 studies yielded by the search, 46 studies met the inclusion criteria in SCZ, BD, and MDD postmortem brains. The results were variable across inflammatory markers. For example, 26 studies were included to measure the differential expression between SCZ and control subjects. Similarly, seven of the included studies measured the differential expression of inflammatory markers in patients with BD. The heterogeneity from the included studies is not clear at present, which may be caused by several factors, including the measured brain region, disease stage, brain source, medication, and other factors.
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Affiliation(s)
- Yang-Wen Ai
- School of Pharmacy, Center on Translational Neuroscience, Minzu University of China, Haidian District, 27 Zhongguancun South St, 100081, Beijing, China
| | - Yang Du
- School of Pharmacy, Center on Translational Neuroscience, Minzu University of China, Haidian District, 27 Zhongguancun South St, 100081, Beijing, China
| | - Lei Chen
- School of Pharmacy, Center on Translational Neuroscience, Minzu University of China, Haidian District, 27 Zhongguancun South St, 100081, Beijing, China
| | - Shu-Han Liu
- School of Pharmacy, Center on Translational Neuroscience, Minzu University of China, Haidian District, 27 Zhongguancun South St, 100081, Beijing, China
| | - Qing-Shan Liu
- School of Pharmacy, Center on Translational Neuroscience, Minzu University of China, Haidian District, 27 Zhongguancun South St, 100081, Beijing, China.
| | - Yong Cheng
- School of Pharmacy, Center on Translational Neuroscience, Minzu University of China, Haidian District, 27 Zhongguancun South St, 100081, Beijing, China. .,Institute of National Security, Minzu University of China, Haidian District, 27 Zhongguancun South St, 100081, Beijing, China.
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Sun T, Chen L, Liu R, Liu QS, Cheng Y. Sophora alopecuroides Alleviates Neuroinflammation and Oxidative Damage of Parkinson's Disease In Vitro and In Vivo. Am J Chin Med 2023; 51:309-328. [PMID: 36611142 DOI: 10.1142/s0192415x23500167] [Citation(s) in RCA: 2] [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] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
For centuries, Sophora alopecuroides L. has been used both as a food and an herbal medicine in northern China. A new cytisine-type alkaloid, N-methylene-(5,7,4[Formula: see text]-trihydroxy)-isoflavone (LY01), was found in the fruits of Sophora alopecuroides L. and shows neuroprotective effects against Parkinson's disease (PD). PD is a frequently occurring, irreversible neurodegenerative disease that seriously threatens the health of the elderly population. There is no cure for PD. The available treatments help manage the symptoms, but their use is limited by multiple side effects. Therefore, more pharmacological treatments addressing this pathology are urgently required. This study aimed to evaluate the neuroprotective effects of LY01 against PD, as well as their underlying mechanisms, using both in vitro and in vivo experimental models. A 1-methyl-4-phenyl-1, 2, 3, 6-tetrahydropyridine hydrochloride (MPTP)-induced mouse model of PD was used to assess the effects of LY01 on the motor coordination deficit, progression of the pathology, and molecular characteristics. 1-Methyl-4-phenylpyridinium (MPP[Formula: see text])-activated SH-SY5Y cells and lipopolysaccharide (LPS)-activated BV-2 cells were used to evaluate LY01 effects on oxidative damage and neuroinflammation. In the rotarod test, LY01 alleviated the impaired motor coordination in PD mice. Furthermore, LY01 treatment prevented the loss of dopaminergic neurons in the substantia nigra and striatum of the PD mice, reduced neuroinflammation in the mice with MPTP-induced PD and the LPS-activated BV-2 cells, and diminished oxidative stress in the PD mice and the MPP[Formula: see text]-induced SH-SY5Y cells. In conclusion, these results suggest the potential of LY01 as a therapeutic agent for treating PD.
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Affiliation(s)
- Ting Sun
- Key Laboratory for Ethnomedicine for Ministry of Education, Center on Translational Neuroscience, School of Pharmacy, Minzu University of China, Beijing 100081, P. R. China.,Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, P. R. China
| | - Lei Chen
- Key Laboratory for Ethnomedicine for Ministry of Education, Center on Translational Neuroscience, School of Pharmacy, Minzu University of China, Beijing 100081, P. R. China
| | - Rui Liu
- Key Laboratory for Ethnomedicine for Ministry of Education, Center on Translational Neuroscience, School of Pharmacy, Minzu University of China, Beijing 100081, P. R. China
| | - Qing-Shan Liu
- Key Laboratory for Ethnomedicine for Ministry of Education, Center on Translational Neuroscience, School of Pharmacy, Minzu University of China, Beijing 100081, P. R. China
| | - Yong Cheng
- Key Laboratory for Ethnomedicine for Ministry of Education, Center on Translational Neuroscience, School of Pharmacy, Minzu University of China, Beijing 100081, P. R. China.,Institute of National Security, Minzu University of China, Beijing 100081, P. R. China
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Ai YW, Fan FC, Liu H, Shi XJ, Li KQ, Liu QS, Jiang H. The antifibrotic effects of the novel compound gorse isoflavone alkaloid on chemical liver injury in rats. Am J Transl Res 2022; 14:5812-5822. [PMID: 36105054 PMCID: PMC9452342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Accepted: 07/05/2022] [Indexed: 06/15/2023]
Abstract
OBJECTIVE Liver fibrosis is a frequently occurring liver injury which lacks of effective treatment clinically. Here, we investigated the protective effects of a novel compound Gorse isoflavone alkaloid (GIA) against liver fibrosis. METHODS Totally forty rats were randomly divided into four groups. Then we established a model of liver fibrosis induced by the intragastric administration of carbon tetrachloride (CCl4). This treated group was followed by the intragastric administration of GIA and colchicine. Then the liver index and spleen index, and liver function indexes were detected by kit. Western blotting assay was performed to estimate the expression of Transforming Growth Factor-β1 (TGF-β1) and related proteins. Tissue fibrosis was observed by Masson staining. RESULTS Our results suggested that GIA reduced the deposition of collagen fibres and the fibrosis index hydroxyproline (Hyp) of liver tissue. Furthermore, we found that GIA significantly decreased the expression of Transforming Growth Factor-β1 (TGF-β1) and the ratio of p-smad2/3 to smad2/3, enhanced the level of superoxide dismutase (SOD), and decreased the concentration of malonic dialdehyde (MDA) in the liver. CONCLUSIONS Our findings revealed that GIA has a beneficial effect to resist the liver fibrosis, and could be ideal for potential use in antifibrotic drugs for the liver.
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Affiliation(s)
- Yang-Wen Ai
- School of Pharmacy, Minzu University of ChinaBeijing 100000, China
- Center on Translational Neuroscience, Minzu University of ChinaBeijing 100000, China
| | - Fang-Cheng Fan
- School of Pharmacy, Minzu University of ChinaBeijing 100000, China
| | - Hua Liu
- School of Pharmacy, Minzu University of ChinaBeijing 100000, China
| | - Xiao-Jie Shi
- School of Pharmacy, Minzu University of ChinaBeijing 100000, China
| | - Ke-Qin Li
- School of Pharmacy, Minzu University of ChinaBeijing 100000, China
| | - Qing-Shan Liu
- School of Pharmacy, Minzu University of ChinaBeijing 100000, China
- Center on Translational Neuroscience, Minzu University of ChinaBeijing 100000, China
| | - Hui Jiang
- Department of Otolaryngology and Stomatology, The Second Affiliated Hospital of Shandong First Medical UniversityTai’an 271000, Shandong, China
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Li XW, Lu YY, Zhang SY, Sai NN, Fan YY, Cheng Y, Liu QS. Mechanism of Neural Regeneration Induced by Natural Product LY01 in the 5×FAD Mouse Model of Alzheimer’s Disease. Front Pharmacol 2022; 13:926123. [PMID: 35814256 PMCID: PMC9258960 DOI: 10.3389/fphar.2022.926123] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 05/31/2022] [Indexed: 12/28/2022] Open
Abstract
Background: A sharp decline in neural regeneration in patients with Alzheimer’s disease (AD) exacerbates the decline of cognition and memory. It is of great significance to screen for innovative drugs that promote endogenous neural regeneration. Cytisine N-methylene-(5,7,4′-trihydroxy)-isoflavone (LY01) is a new compound isolated from the Chinese herbal medicine Sophora alopecuroides with both isoflavone and alkaloid characteristic structures. Its pharmacological effects are worth studying.Objective: This study was designed to determine whether LY01 delays the cognitive and memory decline in the early stage of AD and whether this effect of LY01 is related to promoting neural regeneration.Methods: Eight-week-old 5×Familial Alzheimer’s Disease (5×FAD) mice were used as disease models of early AD. Three doses of LY01 administered in two courses (2 and 5 weeks) of treatment were tested. Cognition, memory, and anxiety-like behaviors in mice were evaluated by the Morris water maze, fear conditioning, and open field experiments. Regeneration of neurons in the mouse hippocampus was observed using immunofluorescence staining. The effect of LY01 on cell regeneration was also demonstrated using a series of tests on primary cultured neurons, astrocytes, and neural stem cells (NSCs). In addition, flow cytometry and transcriptome sequencing were carried out to preliminarily explored the mechanisms.Results: We found that LY01 reduced the decline of cognition and memory in the early stage of 5×FAD mice. This effect was related to the proliferation of astrocytes, the proliferation and migration of NSCs, and increases in the number of new cells and neural precursor cells in the dentate gyrus area of 5×FAD mice. This phenomenon could be observed both in 2-week-old female and 5-week-old male LY01-treated 5×FAD mice. The neuronal regeneration induced by LY01 was related to the regulation of the extracellular matrix and associated receptors, and effects on the S phase of the cell cycle.Conclusion: LY01 increases the proliferation of NSCs and astrocytes and the number of neural precursor cells in the hippocampus, resulting in neural regeneration in 5×FAD mice by acting on the extracellular matrix and associated receptors and regulating the S phase of the cell cycle. This provides a new idea for the early intervention and treatment of AD.
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Affiliation(s)
- Xiao-Wan Li
- Key Laboratory of Ethnomedicine for Ministry of Education, Center on Translational Neuroscience, Minzu University of China, Beijing, China
- Center for Life Sciences, School of Life Science and Technology, Harbin Institute of Technology, Harbin, China
| | - Yang-Yang Lu
- Key Laboratory of Ethnomedicine for Ministry of Education, Center on Translational Neuroscience, Minzu University of China, Beijing, China
| | - Shu-Yao Zhang
- Key Laboratory of Ethnomedicine for Ministry of Education, Center on Translational Neuroscience, Minzu University of China, Beijing, China
| | - Ning-Ning Sai
- University Hospital, Tianjin Normal University, Tianjin, China
| | - Yu-Yan Fan
- Traditional Chinese Medicine Department, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Yong Cheng
- Key Laboratory of Ethnomedicine for Ministry of Education, Center on Translational Neuroscience, Minzu University of China, Beijing, China
- Institute of National Security, Minzu University of China, Beijing, China
- *Correspondence: Yong Cheng, ; Qing-Shan Liu,
| | - Qing-Shan Liu
- Key Laboratory of Ethnomedicine for Ministry of Education, Center on Translational Neuroscience, Minzu University of China, Beijing, China
- *Correspondence: Yong Cheng, ; Qing-Shan Liu,
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An FM, Liu Z, Xuan XR, Liu QS, Wei CX. Sanweidoukou decoction, a Chinese herbal formula, ameliorates β-amyloid protein-induced neuronal insult via modulating MAPK/NF-κB signaling pathways: Studies in vivo and in vitro. J Ethnopharmacol 2021; 273:114002. [PMID: 33705924 DOI: 10.1016/j.jep.2021.114002] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [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: 11/24/2020] [Revised: 02/19/2021] [Accepted: 03/02/2021] [Indexed: 06/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The traditional Chinese medicine Sanweidoukou decoction (DK-3) was a classical formula for the treatment of nervous system diseases, recorded in the Chinese medical classic Sibu Yidian. AIM OF THE STUDY The present study is aim to investigate the neuroprotective effects of DK-3 on β-amyloid (Aβ) protein -induced AD-like pathologies and underlying molecular mechanisms both in vitro and in vivo studies. MATERIALS AND METHODS Hydrolysates of DK-3 were analyzed by LC-ESI-MS/MS. In vitro, MTT was utilized to examine effects of DK-3 on Aβ25-35-induced cytotoxicity in PC12 cells. In vivo, male Sprague-Dawley rats were administered with Aβ25-35 to induce AD-like pathologies and behavioral evaluations were conducted via Morris water maze (MWM) test. Histopathological changes were observed by Hematoxylin-eosin (HE) straining. Immunohistochemistry (IHC) was used to detect the tau hyperphosphorylation at Thr181 site. The expression levels of tau hyperphosphorylation, inflammation-related cytokines such as COX-2, iNOS, TNF-α, IL-1β, IL-6, the phosphorylated state of various mitogen-activated protein kinase (MAPK) signaling molecules (p38 MAPK, ERK, and JNK) and activation of nuclear factor κB (NF-κB) in vitro and in vivo were assessed via Western blot. RESULTS In vitro, DK-3 dose-dependently increased cell viability of PC12 cells induced by Aβ25-35. In vivo, DK-3 improved learning and memory abilities of Aβ25-35-induced AD-like rats. Moreover, DK-3 reversed hyperphosphorylation of tau and reduced the production of inflammation-related cytokines through significantly inhibited MAPK and NF-κB signaling pathways both in vitro and in vivo studies. CONCLUSION The present study suggested that the traditional Chinese medicine DK-3 may play a role in preventing and treating AD by reducing the hyperphosphorylation of tau protein and the expressions of inflammation-related cytokines via modulating the MAPK/NF-κB signaling pathways.
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Affiliation(s)
- Feng-Mao An
- Medical College, Inner Mongolia University for Nationalities, Tongliao, 028000, Inner Mongolia, PR China.
| | - Zheng Liu
- Medical College, Inner Mongolia University for Nationalities, Tongliao, 028000, Inner Mongolia, PR China.
| | - Xin-Ran Xuan
- Affiliated Hospitals, Inner Mongolia University for Nationalities, Tongliao, 028000, Inner Mongolia, PR China.
| | - Qing-Shan Liu
- Key Laboratory of Ethnomedicine of Ministry of Education, School of Pharmacy, Center on Translational Neuroscience, Minzu University of China, Beijing, PR China.
| | - Cheng-Xi Wei
- Medical College, Inner Mongolia University for Nationalities, Tongliao, 028000, Inner Mongolia, PR China.
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Shi XJ, Fan FC, Liu H, Ai YW, Liu QS, Jiao YG, Cheng Y. Traditional Chinese Medicine Decoction Combined With Antipsychotic for Chronic Schizophrenia Treatment: A Systematic Review and Meta-analysis. Front Pharmacol 2021; 11:616088. [PMID: 33708122 PMCID: PMC7942273 DOI: 10.3389/fphar.2020.616088] [Citation(s) in RCA: 6] [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] [Received: 10/11/2020] [Accepted: 12/16/2020] [Indexed: 11/13/2022] Open
Abstract
Despite several studies suggesting the effectiveness of traditional Chinese medicine (TCM) in schizophrenia, there is still a lack of systematic summary and analysis on the role of TCM as adjuvant therapy in chronic schizophrenia. For this purpose, we conducted a meta-analysis to study the efficacy of TCM as an adjuvant combined with antipsychotics in the treatment of chronic schizophrenia. Until April 2020, based on the review of six electronic databases, eight articles were selected. The articles compared TCM decoction assisted antipsychotic therapies with an antipsychotic alone in the treatment of chronic schizophrenia by analyzing a total of 810 cases. The results showed that TCM combined with antipsychotics have beneficial effects on the Positive and Negative Syndrome Scale (PANSS), including the changes in total score, negative score, and the clinical effects evaluated by the PANSS scale. Subgroup analysis showed that the effects of auxiliary TCM with different efficacy on the positive and psychopathological scores were significantly different. It was found that adjuvant treatment with TCM can reduce some side effects and improve the patient's living conditions in the evaluation of the Schizophrenia Quality Of Life Scale (SQLS). Many studies have proved that TCM is safe and well-tolerated. Although the difficulties of using limited TCM remains to be generalized, it still has great potential in the adjuvant treatment of chronic schizophrenia.
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Affiliation(s)
- Xiao-Jie Shi
- Key Laboratory of Ethnomedicine of Ministry of Education, Center on Translational Neuroscience, School of Pharmacy, Minzu University of China, Beijing, China
| | - Fang-Cheng Fan
- Key Laboratory of Ethnomedicine of Ministry of Education, Center on Translational Neuroscience, School of Pharmacy, Minzu University of China, Beijing, China
| | - Hua Liu
- Key Laboratory of Ethnomedicine of Ministry of Education, Center on Translational Neuroscience, School of Pharmacy, Minzu University of China, Beijing, China
| | - Yang-Wen Ai
- Key Laboratory of Ethnomedicine of Ministry of Education, Center on Translational Neuroscience, School of Pharmacy, Minzu University of China, Beijing, China
| | - Qing-Shan Liu
- Key Laboratory of Ethnomedicine of Ministry of Education, Center on Translational Neuroscience, School of Pharmacy, Minzu University of China, Beijing, China
| | - Yu-Guo Jiao
- Key Laboratory of Ethnomedicine of Ministry of Education, Center on Translational Neuroscience, School of Pharmacy, Minzu University of China, Beijing, China
| | - Yong Cheng
- Key Laboratory of Ethnomedicine of Ministry of Education, Center on Translational Neuroscience, School of Pharmacy, Minzu University of China, Beijing, China.,College of Life and Environmental Sciences, Minzu University of China, Beijing, China
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Wei ZX, Xie GJ, Mao X, Zou XP, Liao YJ, Liu QS, Wang H, Cheng Y. Exosomes from patients with major depression cause depressive-like behaviors in mice with involvement of miR-139-5p-regulated neurogenesis. Neuropsychopharmacology 2020; 45:1050-1058. [PMID: 31986519 PMCID: PMC7162931 DOI: 10.1038/s41386-020-0622-2] [Citation(s) in RCA: 121] [Impact Index Per Article: 30.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 12/13/2019] [Accepted: 01/20/2020] [Indexed: 11/09/2022]
Abstract
Exosomal microRNAs (miRNAs) have been suggested to participate in the pathogenesis of neuropsychiatric diseases, but their role in major depressive disorder (MDD) is unknown. We performed a genome-wide miRNA expression profiling of blood-derived exosomes from MDD patients and control subjects and revealed the top differentially expressed exosomal miRNA, i.e. hsa-miR-139-5p (upregulation), had good performance to differentiate between MDD patients and controls. Tail vein injection of blood exosomes isolated from MDD patients into normal mice caused their depressive-like behaviors as determined by the forced swimming, tail suspension, and novelty suppressed feeding tests, and injection of blood exosomes isolated from healthy volunteers into unpredictable mild stress (CUMS)-treated mice alleviated their depressive-like behaviors. CUMS mice also showed significantly increased blood and brain levels of exosomal miR-139-5p. Furthermore, the depressive-like behaviors in CUMS-treated mice were rescued by intranasal injection of miR-139-5p antagomir, suggesting that increased exosomal miR-139-5p levels may mediate stress-induced depression-like behavior in mice. Both exosome treatment and miR-139-5p antagomir treatment increased hippocampal neurogenesis in the CUMS-treated mice, and treatment of exosome from MDD patients decreased hippocampal neurogenesis in the normal mice. The role of miR-139-5p in neurogenesis was validated by in vitro experiments, demonstrating that miR-139-5p is a negative regulator for neural stem cell proliferation and neuronal differentiation. Our findings together suggest that exosomes from patients with major depression caused depressive-like behaviors in mice with involvement of miR-139-5p-regulated neurogenesis. Therefore, exosomal miRNAs are promising targets for the diagnosis and treatment of MDD.
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Affiliation(s)
- Ze-Xu Wei
- 0000 0004 0369 0529grid.411077.4Key Laboratory of Ethnomedicine for Ministry of Education, Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, China
| | - Guo-Jun Xie
- The Third People’s Hospital of Foshan, Foshan, Guangdong China
| | - Xiao Mao
- NHC Key Laboratory of Birth Defects Research, Prevention and Treatment (Hunan Provincial Maternal and Child Health Care Hospital), Changsha, China
| | - Xin-Peng Zou
- 0000 0004 0369 0529grid.411077.4Key Laboratory of Ethnomedicine for Ministry of Education, Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, China
| | - Ya-Jin Liao
- 0000 0004 0369 0529grid.411077.4Key Laboratory of Ethnomedicine for Ministry of Education, Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, China
| | - Qing-Shan Liu
- 0000 0004 0369 0529grid.411077.4Key Laboratory of Ethnomedicine for Ministry of Education, Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, China
| | - Hua Wang
- NHC Key Laboratory of Birth Defects Research, Prevention and Treatment (Hunan Provincial Maternal and Child Health Care Hospital), Changsha, China
| | - Yong Cheng
- Key Laboratory of Ethnomedicine for Ministry of Education, Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, China. .,NHC Key Laboratory of Birth Defects Research, Prevention and Treatment (Hunan Provincial Maternal and Child Health Care Hospital), Changsha, China.
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Li XW, Li XX, Liu QS, Cheng Y. Blood and Cerebrospinal Fluid Autoantibody to Aβ Levels in Patients with Alzheimer’s Disease: a Meta-Analysis Study. J Mol Neurosci 2020; 70:1208-1215. [DOI: 10.1007/s12031-020-01528-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Accepted: 03/02/2020] [Indexed: 01/01/2023]
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13
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Liu AP, Yuan QH, Zhang B, Yang L, He QW, Chen K, Liu QS, Li Z, Zhan J. Corrigendum to "Cannabinoid receptor 2 activation alleviates septic lung injury by promoting autophagy via inhibition of inflammatory mediator release" [Cellular signaling 69 (2020) 109556]. Cell Signal 2020; 72:109600. [PMID: 32199719 DOI: 10.1016/j.cellsig.2020.109600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- A P Liu
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, 430071 Wuhan, Hubei, People's Republic of China
| | - Q H Yuan
- Department of Anesthesiology, Renmin Hospital of Wuhan University, 430060 Wuhan, Hubei, People's Republic of China
| | - B Zhang
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, 430071 Wuhan, Hubei, People's Republic of China
| | - L Yang
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, 430071 Wuhan, Hubei, People's Republic of China
| | - Q W He
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, 430071 Wuhan, Hubei, People's Republic of China
| | - K Chen
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, 430071 Wuhan, Hubei, People's Republic of China
| | - Q S Liu
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, 430071 Wuhan, Hubei, People's Republic of China
| | - Z Li
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, 430071 Wuhan, Hubei, People's Republic of China.
| | - J Zhan
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, 430071 Wuhan, Hubei, People's Republic of China.
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14
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Song YJ, Li SR, Li XW, Chen X, Wei ZX, Liu QS, Cheng Y. The Effect of Estrogen Replacement Therapy on Alzheimer's Disease and Parkinson's Disease in Postmenopausal Women: A Meta-Analysis. Front Neurosci 2020; 14:157. [PMID: 32210745 PMCID: PMC7076111 DOI: 10.3389/fnins.2020.00157] [Citation(s) in RCA: 80] [Impact Index Per Article: 20.0] [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: 10/30/2019] [Accepted: 02/10/2020] [Indexed: 12/19/2022] Open
Abstract
Background: Estrogen replacement therapy (ERT) is a common treatment method for menopausal syndrome; however, its therapeutic value for the treatment of neurological diseases is still unclear. Epidemiological studies were performed, and the effect of postmenopausal ERT on treating neurodegenerative diseases, including Alzheimer's disease (AD) and Parkinson's disease (PD), was summarized through a meta-analysis. Methods: Twenty-one articles were selected using a systematic searching of the contents listed on PubMed and Web of Science before June 1, 2019. Epidemiological studies were extracted, and relevant research data were obtained from the original articles based on the predefined inclusion criteria and data screening principles. The Comprehensive Meta-Analysis Version 2 software was used to pool effective size, test heterogeneity, conduct meta-regression and subgroup analysis, and to calculate publication bias. Results: Our results showed that ERT significantly decreased the risk of onset and/or development of AD [odds ratio (OR): 0.672; 95% CI: 0.581–0.779; P < 0.001] and PD (OR: 0.470; 95% CI: 0.368–0.600; P < 0.001) compared with the control group. A subgroup and meta-regression analysis showed that study design and measure of effect were the source of heterogeneity. Age, sample size, hormone therapy ascertainment, duration of the treatment, or route of administration did not play a significant role in affecting the outcome of the meta-analysis. Conclusion: We presented evidence here to support the use of estrogen therapy for the treatment of AD and PD.
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Affiliation(s)
- Yu-Jia Song
- Key Laboratory of Ethnomedicine of Ministry of Education, Center on Translational Neuroscience, School of Pharmacy, Minzu University of China, Beijing, China
| | - Shu-Ran Li
- Key Laboratory of Ethnomedicine of Ministry of Education, Center on Translational Neuroscience, School of Pharmacy, Minzu University of China, Beijing, China
| | - Xiao-Wan Li
- Key Laboratory of Ethnomedicine of Ministry of Education, Center on Translational Neuroscience, School of Pharmacy, Minzu University of China, Beijing, China
| | - Xi Chen
- Key Laboratory of Ethnomedicine of Ministry of Education, Center on Translational Neuroscience, School of Pharmacy, Minzu University of China, Beijing, China
| | - Ze-Xu Wei
- Key Laboratory of Ethnomedicine of Ministry of Education, Center on Translational Neuroscience, School of Pharmacy, Minzu University of China, Beijing, China
| | - Qing-Shan Liu
- Key Laboratory of Ethnomedicine of Ministry of Education, Center on Translational Neuroscience, School of Pharmacy, Minzu University of China, Beijing, China
| | - Yong Cheng
- Key Laboratory of Ethnomedicine of Ministry of Education, Center on Translational Neuroscience, School of Pharmacy, Minzu University of China, Beijing, China
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15
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Li SR, Song YJ, Deng R, Li XW, Cheng Y, Zhang ZQ, Sun FY, Liu QS. Mallotus oblongifolius extracts ameliorate ischemic nerve damage by increasing endogenous neural stem cell proliferation through the Wnt/β-catenin signaling pathway. Food Funct 2020; 11:1027-1036. [PMID: 31819940 DOI: 10.1039/c9fo01790a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Mallotus oblongifolius (MO), an edible medicinal plant from Hainan in China, shows a wide range of bioactivities. The daily consumption of MO or its extracts has been observed to ameliorate ischemic nerve injury. However the mechanisms remain unclear. In this study, the effects of MO both in vitro and in vivo were investigated. The results indicated that MO improved the motor ability, neurosensory ability, balance and grasping ability of mice with ischemic injuries, induced by bilateral common carotid artery ligation (BCCAL). In addition, MO improved the morphology of neurons, resisted the loss of neurons, and enhanced the content of the nestin protein in the cerebral cortex and subgranular zone (SGZ) area. Furthermore, in the oxygen-glucose deprivation and reperfusion (OGD/R) treated cell model, MO could effectively activate the Wnt/β-catenin signaling pathway and promote the proliferation of neural stem cells (NSCs) and increase the protein expression levels of β-catenin and CyclinD1. Our results suggest that Mallotus oblongifolius may be used as nutraceuticals or functional foods to alleviate ischemic nerve damage and promote recovery from ischemic stroke.
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Affiliation(s)
- Shu-Ran Li
- Key Laboratory of Ethnomedicine of Ministry of Education, School of Pharmacy and Center on Translational Neuroscience, Minzu University of China, 100081 Beijing, China.
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16
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Du Y, Yu Y, Hu Y, Li XW, Wei ZX, Pan RY, Li XS, Zheng GE, Qin XY, Liu QS, Cheng Y. Genome-Wide, Integrative Analysis Implicates Exosome-Derived MicroRNA Dysregulation in Schizophrenia. Schizophr Bull 2019; 45:1257-1266. [PMID: 30770930 PMCID: PMC6811837 DOI: 10.1093/schbul/sby191] [Citation(s) in RCA: 81] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Genetic variants conferring risk for schizophrenia (SCZ) have been extensively studied, but the role of posttranscriptional mechanisms in SCZ is not well studied. Here we performed the first genome-wide microRNA (miRNA) expression profiling in serum-derived exosome from 49 first-episode, drug-free SCZ patients and 46 controls and identified miRNAs and co-regulated modules that were perturbed in SCZ. Putative targets of these SCZ-affected miRNAs were enriched strongly for genes that have been implicated in protein glycosylation and were also related to neurotransmitter receptor and dendrite (spine) development. We validated several differentially expressed blood exosomal miRNAs in 100 SCZ patients as compared with 100 controls by quantitative reverse transcription-polymerase chain reaction. The potential regulatory relationships between several SCZ-affected miRNAs and their putative target genes were also validated. These include hsa-miR-206, which is the most upregulated miRNA in the blood exosomes of SCZ patients and that previously reported to regulate brain-derived neurotrophic factor expression, which we showed reduced mRNA and protein levels in the blood of SCZ patients. In addition, we found 11 miRNAs in blood exosomes from the miRNA sequence data that can be used to classify samples from SCZ patients and control subjects with close to 90% accuracy in the training samples, and approximately 75% accuracy in the testing samples. Our findings support a role for exosomal miRNA dysregulation in SCZ pathophysiology and provide a rich data set and framework for future analyses of miRNAs in the disease, and our data also suggest that blood exosomal miRNAs are promising biomarkers for SCZ.
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Affiliation(s)
- Yang Du
- Key Laboratory of Ethnomedicine for Ministry of Education, Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, China
| | - Yun Yu
- Key Laboratory of Ethnomedicine for Ministry of Education, Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, China
| | - Yang Hu
- Key Laboratory of Ethnomedicine for Ministry of Education, Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, China
| | - Xiao-Wan Li
- Key Laboratory of Ethnomedicine for Ministry of Education, Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, China
| | - Ze-Xu Wei
- Key Laboratory of Ethnomedicine for Ministry of Education, Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, China
| | - Rui-Yuan Pan
- Institute of Basic Medical Sciences, Academy of Military Medical Sciences, Beijing, China
| | - Xue-Song Li
- The Third People’s Hospital of Foshan, Guangdong, China
| | | | - Xiao-Yan Qin
- Key Laboratory of Ethnomedicine for Ministry of Education, Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, China
| | - Qing-Shan Liu
- Key Laboratory of Ethnomedicine for Ministry of Education, Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, China
| | - Yong Cheng
- Key Laboratory of Ethnomedicine for Ministry of Education, Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, China,To whom correspondence should be addressed; 27 Zhongguancun South St, Haidian District, Beijing 100081, China; tel: 86-10-68931383, fax: 86-10-68936927, e-mail:
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17
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Yu Y, Lang XY, Li XX, Gu RZ, Liu QS, Lan R, Qin XY. 2,3,5,4'-Tetrahydroxystilbene-2-O-β-d-glucoside attenuates MPP+/MPTP-induced neurotoxicity in vitro and in vivo by restoring the BDNF-TrkB and FGF2-Akt signaling axis and inhibition of apoptosis. Food Funct 2019; 10:6009-6019. [PMID: 31482900 DOI: 10.1039/c9fo01309a] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The major bioactive ingredient THSG of Polygonum multiflorum is well established for its anti-oxidation, anti-aging and anti-inflammation properties. Increasing evidence supports the capacity of THSG to ameliorate the biochemistry of neurotrophins and their downstream signaling axis in mouse models to attenuate neurodegenerative diseases such as Alzheimer's and Parkinson's disease. In this study, the neuroprotective effects of THSG were studied in vitro and in vivo. In cultured mesencephalic dopamine neurons and SH-SY5Y cell line, it was found that THSG protected the integrity of the cell body and neurite branching from MPP+-induced toxicity by restoring the expression of FGF2 and BDNF and their downstream signaling pathways to inhibit apoptosis and promote cell survival. The inhibition of Akt signaling by LY294002 or TrkB activity by K252a eliminated the neuroprotective effects of THSG. In the MPTP-induced mouse models of Parkinson's disease, THSG ameliorated the animal behaviors against MPTP-induced neurotoxicity, which was demonstrated by the pole test and the tail suspension test. Biochemical and immunohistochemical analysis verified the THSG-mediated restoration of the FGF2-Akt and BDNF-TrkB signaling axis in the substantia nigra and corpus striatum and the recovery of dopaminergic neurons. These results establish the neuroprotective effects of THSG in vitro and in vivo and unravel the underlying mechanism against toxin-induced neural atrophy, providing a new avenue for the use and pharmacological research of edible medicine for anti-neurodegenerative diseases.
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Affiliation(s)
- Yun Yu
- Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, 100081, China.
| | - Xiu-Yuan Lang
- Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, 100081, China.
| | - Xi-Xi Li
- Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, 100081, China.
| | - Run-Ze Gu
- Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, 100081, China.
| | - Qing-Shan Liu
- Key Lab of Ministry of Education, National Research Center for Minority Medicine and Nutrion, Minzu University of China, Beijing 100081, China
| | - Rongfeng Lan
- Department of Cell Biology & Medical Genetics, School of Basic Medical Sciences, Shenzhen University Health Science Center, Shenzhen 518060, China.
| | - Xiao-Yan Qin
- Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, 100081, China.
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18
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Qian K, Wang H, Liu J, Gao S, Liu W, Wan X, Zhang Y, Liu QS, Yin XY. Synthesis of α-glycosidase hybrid nano-flowers and their application for enriching and screening α-glycosidase inhibitors. NEW J CHEM 2018. [DOI: 10.1039/c7nj03545d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
To rapidly and accurately screen compounds present in traditional Chinese herbal medicines for α-glycosidase inhibitors, we synthesized a novel nano-affinity material to enable the targeted screening of α-glycosidase inhibitors.
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Affiliation(s)
- Kang Qian
- College of Pharmacy
- Jiangxi University of Traditional Chinese Medicine
- Nanchang
- China
| | - Han Wang
- College of Chemistry and Chemical Engineering
- Shanghai University of Engineering Science
- Shanghai
- China
| | - Jieming Liu
- College of Chemistry and Chemical Engineering
- Shanghai University of Engineering Science
- Shanghai
- China
| | - Shuting Gao
- College of Pharmacy
- Jiangxi University of Traditional Chinese Medicine
- Nanchang
- China
| | - Weiting Liu
- College of Pharmacy
- Jiangxi University of Traditional Chinese Medicine
- Nanchang
- China
| | - Xi Wan
- College of Pharmacy
- Jiangxi University of Traditional Chinese Medicine
- Nanchang
- China
| | - Yuanyuan Zhang
- College of Pharmacy
- Jiangxi University of Traditional Chinese Medicine
- Nanchang
- China
| | - Qing-Shan Liu
- China Key Lab of Ministry of Education
- National Research Center for Chinese Minority Medicine
- Minzu University of China
- Beijing
- China
| | - Xiao-Ying Yin
- College of Chemistry and Chemical Engineering
- Shanghai University of Engineering Science
- Shanghai
- China
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19
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Liu QS, Jiang HL, Wang Y, Wang LL, Zhang JX, He CH, Shao S, Zhang TT, Xing JG, Liu R. Total flavonoid extract from Dracoephalum moldavica L. attenuates β-amyloid-induced toxicity through anti-amyloidogenesic and neurotrophic pathways. Life Sci 2017; 193:214-225. [PMID: 29100755 DOI: 10.1016/j.lfs.2017.10.041] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Revised: 10/29/2017] [Accepted: 10/30/2017] [Indexed: 10/18/2022]
Abstract
AIMS Alzheimer's disease (AD) is an incurable neurodegenerative disorder characterized by global cognitive impairment that involves accumulation of amyloid-beta peptides (Aβ) in the brain. Herbal approaches can be used as alternative medicines to slow the progression of AD. This study aimed to determine the beneficial effects and potential underlying mechanisms of total flavonoid extract from Dracoephalum moldavica L. (TFDM) for attenuating Alzheimer-related deficits induced by Aβ. MAIN METHODS We used amyloid precursor protein (APP) and presenilin 1 (PS1) double transgenic mice and copper-injured APP Swedish mutation overexpressing SH-SY5Y cells to evaluate the beneficial effects of TFDM. Further, identifying the mechanisms of action was conducted on anti-amyloidogenic and neurotrophic transductions. KEY FINDINGS Our results indicated that TFDM treatment ameliorated cognitive impairments and neurodegeneration and improved the antioxidant defense system in APP/PS1 mice. TFDM also reduced Aβ burden by relieving Aβ deposition, decreasing insoluble Aβ levels, and inhibiting β-amyloidogenic processing pathway involving downregulation of β-secretase and β-C-terminal fragment in the brain. In the in vitro model of AD, TFDM treatment protected injured cells, and combined with the beneficial effects of decreasing APP levels, lowered Aβ1-42 and regulated the redox imbalance. Moreover, TFDM preserved the extracellular signal-regulated kinase/cAMP response element-binding protein/brain-derived neurotrophic factor pathway both in vitro and in vivo. SIGNIFICANCE In conclusion, TFDM clearly demonstrated neuroprotective effects by restoring the anti-amyloidogenic and neurotrophic transductions in the context of AD-associated deficits. These findings indicate the potential use of herb-based substances as supplements or potential alternative supplements for attenuating the progression of AD.
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Affiliation(s)
- Qing-Shan Liu
- Key Laboratory of Ministry of Education, College of Pharmacy, Minzu University of China, Beijing, 100081, PR China
| | - Hai-Lun Jiang
- Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, PR China
| | - Yu Wang
- Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, PR China
| | - Lin-Lin Wang
- Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, PR China
| | - Jun-Xia Zhang
- Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, PR China
| | - Cheng-Hui He
- Key Laboratory of Uighur Medicine of Xinjiang Uygur Autonomous Region, Xinjiang, Institute of Materia Medica, Urumqi 830004, PR China
| | - Shuai Shao
- Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, PR China
| | - Tian-Tai Zhang
- Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, PR China
| | - Jian-Guo Xing
- Key Laboratory of Uighur Medicine of Xinjiang Uygur Autonomous Region, Xinjiang, Institute of Materia Medica, Urumqi 830004, PR China.
| | - Rui Liu
- Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, PR China; Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, PR China.
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20
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Liu QS, Deng R, Fan Y, Li K, Meng F, Li X, Liu R. Low dose of caffeine enhances the efficacy of antidepressants in major depressive disorder and the underlying neural substrates. Mol Nutr Food Res 2017; 61. [PMID: 28054436 DOI: 10.1002/mnfr.201600910] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2016] [Revised: 12/15/2016] [Accepted: 12/30/2016] [Indexed: 12/20/2022]
Affiliation(s)
- Qing-Shan Liu
- Center for Translational Neuroscience & China Minority Medicine and Nutrition; Minzu University of China; Beijing China
| | - Ran Deng
- Center for Translational Neuroscience & China Minority Medicine and Nutrition; Minzu University of China; Beijing China
| | - Yuyan Fan
- Beijing Neurosurgical Institute & Pain Department; Beijing Tiantan Hospital; Capital Medical University; Beijing China
| | - Keqin Li
- Center for Translational Neuroscience & China Minority Medicine and Nutrition; Minzu University of China; Beijing China
| | - Fangang Meng
- Beijing Neurosurgical Institute & Pain Department; Beijing Tiantan Hospital; Capital Medical University; Beijing China
| | - Xueli Li
- Experimental Center for Medicine; China Academy of Traditional Chinese Medicine; Beijing China
| | - Rui Liu
- State Key Lab of Bioactive Substance and Function of Natural Medicines; Institute of Materia Medica; Chinese Academy of Medical Sciences & Peking Union Medical College; Beijing China
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21
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Liu QS, Deng R, Li S, Li X, Li K, Kebaituli G, Li X, Liu R. Ellagic acid protects against neuron damage in ischemic stroke through regulating the ratio of Bcl-2/Bax expression. Appl Physiol Nutr Metab 2017; 42:855-860. [PMID: 28388366 DOI: 10.1139/apnm-2016-0651] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
An oxygen-glucose deprivation and reoxygenation model in primary cultured rat cortical neurons was developed for this study to investigate the effects of ellagic acid (EA), a low-molecular-weight polyphenol, on neuron cells and their function, and to evaluate whether EA can be safely utilized by humans as a functional food or therapeutic agent. Administration of EA significantly decreased the volume of cerebrum infarction and the neurological deficit scores of the rats; EA treatment also increased the number of Bcl-2-positive cells and the ratio of Bcl-2-positive to Bax-positive neurons in the semidarkness zone near the brain ischemic focus in the photothrombotic cerebral ischemia model. Treatment of EA resulted in increased neuron viability, cell nuclear integrity, and the ratio of Bcl-2/Bax expression in the primary cultured neuron model; EA treatment also lead to a decrease in the number of apoptotic cells. Our results therefore suggest a specific mechanism for the beneficial effects of EA, providing new insights into how it provides neuroprotection. To the best of our knowledge, these results represent new insights on the mechanisms of the brain cell protective activity of EA. Thus, EA may be used in functional foods or medicines to help treat nerve dysfunction, neurodegenerative disease, and aging.
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Affiliation(s)
- Qing-Shan Liu
- a Key Lab of Ministry of Education, National Research Center on Minority Medicine and Translational Neuroscience, Minzu University of China, Beijing 100081, People's Republic of China
| | - Ran Deng
- a Key Lab of Ministry of Education, National Research Center on Minority Medicine and Translational Neuroscience, Minzu University of China, Beijing 100081, People's Republic of China
| | - Shuran Li
- a Key Lab of Ministry of Education, National Research Center on Minority Medicine and Translational Neuroscience, Minzu University of China, Beijing 100081, People's Republic of China
| | - Xu Li
- a Key Lab of Ministry of Education, National Research Center on Minority Medicine and Translational Neuroscience, Minzu University of China, Beijing 100081, People's Republic of China
| | - Keqin Li
- a Key Lab of Ministry of Education, National Research Center on Minority Medicine and Translational Neuroscience, Minzu University of China, Beijing 100081, People's Republic of China
| | - Gulibanumu Kebaituli
- a Key Lab of Ministry of Education, National Research Center on Minority Medicine and Translational Neuroscience, Minzu University of China, Beijing 100081, People's Republic of China
| | - Xueli Li
- b Experimental Research Center, China Academy of traditional Chinese Medicine, Beijing, 100700, People's Republic of China
| | - Rui Liu
- c State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, People's Republic of China
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22
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Liu QS, Deng R, Yan QF, Cheng L, Luo Y, Li K, Yin X, Qin X. Novel Beta-Tubulin-Immobilized Nanoparticles Affinity Material for Screening β-Tubulin Inhibitors from a Complex Mixture. ACS Appl Mater Interfaces 2017; 9:5725-5732. [PMID: 28112513 DOI: 10.1021/acsami.6b13477] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In order to efficiently screen and isolate β-tubulin inhibitors, β-tubulin was immobilized on core-shell PMMA/CS (poly(methyl methacrylate)/Chitosan) nanoparticles to produce a new type of immobilized affinity material named β-tubulin-immobilized nanoparticles (β-TIN). The selectivity and adsorption performance of β-TIN were characterized using various control drugs. The β-TIN, the paclitaxel molecularly imprinted ploymers (MIP), and the C18 adsorbing material were compared for selectivity and enrichment ratio. Microtubule-targeting antitumor compounds were screened and isolated from a typical Chinese medicine, Chloranthus multistachys, by β-TIN. Three active compounds (curcolnol, zedoarofuran, and codonolactone) in Chloranthus multistachys extract were captured successfully. Microscale thermophoresis demonstrated that these three compounds strongly bind to β-tubulin, and the dissociation constants (Kd) between the three active compounds and β-tubulin were 1820 ± 0.68 nM, 1640 ± 0.52 nM, and 284 ± 1.00 nM, respectively. Moreover, the binding affinity between codonolactone and β-tubulin was greater than that between paclitaxel and β-tubulin. The antitumor activities of the three compounds were confirmed by the microtubule inhibition model, and the results showed a similar antitumor mechanism as paclitaxel. Molecular dynamics simulations were performed to preliminarily investigate the potential binding sites and the structure-activity relationship between the three active molecules and β-tubulin. Our study is the first to report the use of this novel material which is highly efficient in capturing low-content β-tubulin inhibitors from a complex mixture. The three screened compounds exhibited potential antineoplastic activity, and these lead compounds utilize a new mechanism of action with promising development prospects. Because β-TIN is easily prepared, displays excellent adsorption and selectivity for targets, and can effectively maintain the steric conformation and activities of target proteins, it will be very useful in the screening of lead compounds for different drug target proteins.
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Affiliation(s)
- Qing-Shan Liu
- Key Lab of Ministry of Education, National Center on Minority Medicine and Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China , Beijing 100081, China
| | - Ran Deng
- Key Lab of Ministry of Education, National Center on Minority Medicine and Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China , Beijing 100081, China
| | - Qing-Fang Yan
- College of Pharmacy, Jiangxi University of Traditional Chinese Medicine , Nanchang 330004, China
| | - Lin Cheng
- College of Pharmacy, Jiangxi University of Traditional Chinese Medicine , Nanchang 330004, China
| | - Yongming Luo
- College of Pharmacy, Jiangxi University of Traditional Chinese Medicine , Nanchang 330004, China
| | - Keqin Li
- Key Lab of Ministry of Education, National Center on Minority Medicine and Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China , Beijing 100081, China
| | - Xiaoying Yin
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science , Shanghai 201620, China
| | - Xiaoyan Qin
- Key Lab of Ministry of Education, National Center on Minority Medicine and Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China , Beijing 100081, China
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Liu QS, He J, Zhou WB, Gu YL, Huang H, Li KQ, Yin XY. Innovative method for the enrichment of high-polarity bioactive molecules present at low concentrations in complex matrices. J Sep Sci 2017; 40:744-752. [PMID: 27935252 DOI: 10.1002/jssc.201601193] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [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: 10/18/2016] [Revised: 11/14/2016] [Accepted: 11/17/2016] [Indexed: 11/11/2022]
Abstract
Ginsenoside Rg1 is a valuable bioactive molecule but its high polarity and low concentration in complex mixtures makes it a challenge to separate Ginsenoside Rg1 from other saponins with similar structures, resulting in low extraction efficiency. The successful development of effective Rg1 molecularly imprinted polymers that exhibit high selectivity and adsorption may offer an improved method for the enrichment of active compounds. In this work, molecularly imprinted polymers were prepared with two different methods, precipitation polymerization or surface imprinted polymerization. Comparison of the adsorption abilities showed higher adsorption of the surface molecularly imprinted polymers prepared by surface imprinted polymerization, 46.80 mg/g, compared to the 27.74 mg/g observed for the molecularly imprinted polymers prepared by precipitation polymerization. Therefore, for higher adsorption of the highly polar Rg1, surface imprinted polymerization is a superior technique to make Rg1 molecularly imprinted polymers. The prepared surface molecularly imprinted polymers were tested as a solid-phase extraction column to directionally enrich Rg1 and its analogues from ginseng tea and total ginseng extracts. The column with surface molecularly imprinted polymers showed higher enrichment efficiency and better selectivity than a C18 solid-phase extraction column. Overall, a new, innovative method was developed to efficiently enrich high-polarity bioactive molecules present at low concentrations in complex matrices.
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Affiliation(s)
- Qing-Shan Liu
- Key Lab of Ministry of Education, National Research Center for Chinese Minority Medicine and Nutrition, Minzu University of China, Beijing, China
| | - Jie He
- Institution of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Wen-Bin Zhou
- Key Lab of Ministry of Education, National Research Center for Chinese Minority Medicine and Nutrition, Minzu University of China, Beijing, China
| | - Yu-Long Gu
- Key Lab of Ministry of Education, National Research Center for Chinese Minority Medicine and Nutrition, Minzu University of China, Beijing, China
| | - Huoqiang Huang
- Key Lab of Ministry of Education, National Research Center for Chinese Minority Medicine and Nutrition, Minzu University of China, Beijing, China
| | - Ke-Qin Li
- Key Lab of Ministry of Education, National Research Center for Chinese Minority Medicine and Nutrition, Minzu University of China, Beijing, China
| | - Xiao-Ying Yin
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, China
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Liu QS, Li SR, Li K, Li X, Yin X, Pang Z. Ellagic acid improves endogenous neural stem cells proliferation and neurorestoration through Wnt/β-catenin signaling in vivo and in vitro. Mol Nutr Food Res 2016; 61. [PMID: 27794200 DOI: 10.1002/mnfr.201600587] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [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: 07/12/2016] [Revised: 09/25/2016] [Accepted: 09/30/2016] [Indexed: 01/09/2023]
Abstract
SCOPE The aim of this study is to research the effects of the polyphenol ellagic acid (EA) on brain cells and to explore its mechanism of action, and to evaluate whether EA can be safely utilized by humans as a functional food or therapeutic agent. METHODS AND RESULTS A photothrombosis-induced model of brain injury in rats was created, and EA was administered intragastrically to rats on 7 consecutive days post-venous ischemia. An oxygen-glucose deprivation and re-perfusion model was established in neural stem cells in order to research the effects on proliferation after 2 days of EA treatment in vitro. The administration of EA improved the rats' nerve-related abilities, remedied infarct volumes and morphological changes in the brain, and enhanced the content of nestin protein in the brain semidarkness zone. The proliferation of NSCs and the expression of β-catenin and Cyclin D1 genes were also increased in primary cultured NSCs. CONCLUSIONS EA administration can improve brain injury outcomes and increase the proliferation of NSCs through the Wnt/β-catenin signaling pathway. The presented results represent new insights on the mechanisms of the brain cell protective activity of EA. Thus, EA may be used in functional foods or medicines to help treat nerve dysfunction, neurodegenerative disease and aging.
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Affiliation(s)
- Qing-Shan Liu
- Key Lab of Ministry of Education, National Research Center for Minority Medicine and Nutrition, Minzu University of China, Beijing, China
| | - Shu-Ran Li
- Key Lab of Ministry of Education, National Research Center for Minority Medicine and Nutrition, Minzu University of China, Beijing, China
| | - Keqin Li
- Key Lab of Ministry of Education, National Research Center for Minority Medicine and Nutrition, Minzu University of China, Beijing, China
| | - Xu Li
- Key Lab of Ministry of Education, National Research Center for Minority Medicine and Nutrition, Minzu University of China, Beijing, China
| | - Xiaoying Yin
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, China
| | - Zongran Pang
- Key Lab of Ministry of Education, National Research Center for Minority Medicine and Nutrition, Minzu University of China, Beijing, China
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Liu QS, Mei QL, Li YH, He XF, Zeng QL, Pang HJ, Xiao LJ. [Clinical effect of polyvinyl alcohol particles combined with chemoembolization in treatment of hepatocellular carcinoma complicated by hepatic arteriovenous shunt and related and prognostic factors]. Zhonghua Gan Zang Bing Za Zhi 2016; 24:834-839. [PMID: 27978929 DOI: 10.3760/cma.j.issn.1007-3418.2016.11.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the clinical effect of polyvinyl alcohol (PVA) particles combined with chemoembolization using chemotherapeutic agents or chemotherapeutic agents lipiodol emulsion (CALE) in the treatment of hepatocellular carcinoma (HCC) complicated by hepatic arteriovenous shunt (HAVS) and related prognostic factors. Methods: A retrospective analysis was performed for the clinical data of 133 patients with HCC complicated by HAVS. HAVS was classified into slow-flow HAVS, intermediate-flow HAVS, and high-flow HAVS, which were treated with 300-500μm, 500-710μm, and 710-1000μm PVA particles, respectively. The patients with slow-flow and intermediate-flow HAVS underwent embolization with PVA combined with chemotherapeutic agents followed by CALE, while those with high-flow HAVS underwent the treatment with PVA combined with chemotherapeutic agents alone. The survival time, progression-free survival time, and postoperative complications were followed up and analyzed. The Kaplan-Meier method was used to calculate cumulative survival rate and the Cox proportional hazards model was used to determine prognostic factors. Results: The median overall survival (OS) of 133 patients was 9.1 months, and the 6-, 12-, and 24-month survival rates were 73.7%, 36.2%, and 10.2%, respectively. The median OS of slow-flow group (36 patients), intermediate-flow group (58 patients), and high-flow group (39 patients) were 7.3, 9.1, and 10.8 months, respectively. And the 6- and 12-month survival rates were 69.2%/19.0%, 72.4%/39.2%, and 77.8%/42.7%, respectively. There was no significant difference in survival time between the patients with different types of HAVS (χ2= 2.865,P= 0.239). The incidence rates of postoperative gastroesophageal variceal bleeding and acute liver failure were 1.1% and 0.4%, respectively. The results of Cox regression analysis showed that preoperative alpha-fetoprotein level≥400 ng/ml (HR= 2.105,P= 0.006) was an independent risk factor, while multiple embolizations (HR= 0.482,P= 0.011), tumor remission (HR= 0.431,P= 0.041), and multimodality therapy (HR= 0.416,P= 0.004) were independent protective factors. Conclusion: PVA particles combined with chemotherapeutic agents or CALE is safe and effective in the treatment of HCC complicated by HAVS. Patients with multiple embolizations, tumor remission, and multimodality therapy tend to have good prognosis, while those with a high level of alpha-fetoprotein before embolization often have poor prognosis.
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Affiliation(s)
- Q S Liu
- Department of Interventional Radiology, Affiliated Zhongshan Hospital, Xiamen University, Xiamen 361004, China(Liu QS); Department of Interventional Radiology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China(Mei QL, Li YH, He XF, Zeng QL, Pang HJ, Xiao LJ)
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Liu QS, Zhuang SJ, Li KQ, Li X. [Analysis on signaling pathway network of proliferation of neural stem cells]. Zhongguo Zhong Yao Za Zhi 2014; 39:407-411. [PMID: 24946539] [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: 06/03/2023]
Abstract
Neural stem cells in brains have capacities of proliferation and differentiation, which is very critical to rebuild the cerebral cortex functions. Therefore, it is of great importance to find key targets and network pathways that regulate the proliferation of neural stem cells, which is also a pressing problem in the medical circle. With the Notch pathway as the core of the network, this paper summarized the advance of the bimolecular network system composed of Wnt, Shh, EGFR, cytokines and Notch signal, and analyzed such key nodes as Notch receptor, CBF1, NICD, Hesl, which may become potential targets of new-type drugs in the future. With the multi-component, multi-target, multi-lever characteristics, traditional Chinese medicines have many common grounds with the network pharmacology. The active component groups or active ingredients in traditional Chinese medicines are one of the material bases for showing their network pharmacological effect, which is worth exploring. This paper aims to provide a new strategy for the treatment of neurodegenerative disease and nerve injury with traditional Chinese medicines.
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Liu QS, Yi LN, Li KQ, Yin XY. [Comparative study on two polymerization methods for preparing ginsenoside Rg1 molecularly imprinted polymer separating materials]. Zhongguo Zhong Yao Za Zhi 2013; 38:4287-4291. [PMID: 24791532] [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: 06/03/2023]
Abstract
To obtain ginsenoside Rg1 molecularly imprinted polymer (MIP) separating materials with high selectivity, enrichment and adsorption performance through directional separation of ginsenoside Rg1 and analogues. In this study, MIPs were respectively prepared by precipitation polymerization and surface imprinted polymerization. Their adsorption performances were compared. The results showed that ginsenoside Rg1 MIPs prepared by the above two methods had a high adsorption performance to template molecules, with the maximum apparent adsorbing capacity of up to 27.74, 46. 80 mg x g(-1), respectively. Moreover, MIPs prepared by surface imprinted polymerization showed higher adsorption capacity than that by precipitation polymerization. The experimental results indicated that as for ginsenoside Rg1 with higher polarity, MIPs prepared by surface imprinted polymerization showed higher selectivity and adsorption performance, which provides provide important reference for preparing imprinted polymers with good adsorption performance with active molecules with strong polarity.
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Liu QS, Chen XY, Zhuang SJ, Li KQ. [Research on effect of Baimai powder effective compounds group promotes neurogenesis and maintains of neural stem cells after cerebral infarction]. Zhongguo Zhong Yao Za Zhi 2013; 38:3776-3781. [PMID: 24494572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The neural stem cells (NSCs), play a crucial role in stroke treatment, which can be regulated by a few of traditional Chinese medicines. In this study, the effect of the Mongolian medicine Baimai powder effective compounds group (BMECG) on the proliferation of NSCs has been investigated. The cultured NSCs which were isolated from newborn rat cerebral cortical in vitro were exposed to oxygen glucose deprivation/reoxgenation (OGD/R). The CFSE immunofluorescence staining was employed to identify the proliferation of NSCs by flow cytometry. Furthermore, the bilateral carotid artery occlusion (BCAO) was established on Kunming mice, and all groups were ig for 7 d respectively. The neurobehavioral changes was studied with rota-rod treadmill test, after that, the brain of mice were detected by immunohistochemistry with labeling of Nestin and pathological observation at 7 days after BCAO. It was found that, proliferation of NSCs was increased by BMECG in in vitro and in vivo. And BMECG significantly improved the time of staying in the rota-rod, it can promote the foundction of in cerebral cortex. It is concluded that these results further support the hypothesis that neuroprotective effect of BMECG may relate to the ability of stimulating self-renew of NSCs, which can be provided a new insight and strategy of anti-neuropathy of stroke.
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Affiliation(s)
- Qing-Shan Liu
- Minzu University of China, State Nationalities Affairs Commission and Department of Educational Key Lab of Minority Traditional Medicine, Beijing 100081, China.
| | - Xiao-Yu Chen
- Minzu University of China, State Nationalities Affairs Commission and Department of Educational Key Lab of Minority Traditional Medicine, Beijing 100081, China
| | - Shu-Juan Zhuang
- Minzu University of China, State Nationalities Affairs Commission and Department of Educational Key Lab of Minority Traditional Medicine, Beijing 100081, China
| | - Ke-Qin Li
- Minzu University of China, State Nationalities Affairs Commission and Department of Educational Key Lab of Minority Traditional Medicine, Beijing 100081, China
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Yi LN, Li KQ, Wang QJ, Liu QS, Guo QL. [Study on directional separation of picroside II from extract of traditional Chinese medicine by molecularly imprinted technology]. Zhongguo Zhong Yao Za Zhi 2013; 38:2136-2139. [PMID: 24079241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Picroside II, separated from Chinese herbal medicine, is an active compound with neroprotective activity. Molecularly imprinted polymers (MIPs) have high affinity toward template molecules synthesized by molecularly imprinted technology for its specific combined sites, which can overcome the shortcomings of traditional separation methods, such as complex operation and low efficiency. In this paper, MIPs were prepared by precipitation polymerization with picroside II as the template molecule, 1-vinylimidazole (1-Vinyl) as functional monomer, ethylene glycol dimethacrylate (EDMA) as cross-linker. The morphology of MIPs was characterized by scanning electronmicroscope (SEM) and its static adsorption capacity was measured by the scatchard equation. The results showed that picroside II MIPs have spherical shape, and most of them are uniform in size. Furthermore, the maximum binding capacity (Q(max)) of MIPs is 3.02 mg x g(-1), higher than that of non-imprinted polymers (NIPs). This result indicated that picroside II MIPs with good morphology and high targeted affinity toward the template molecules can be prepared by precipitation polymerization, which can be used to separate picroside II and its analogies from extract of Chinese herbal medicine. In addition, this method has the advantages of good environment and simple operation, which might offer a novel method for the efficient separation of picroside II in the traditional herbal medicines.
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Affiliation(s)
- Li-Na Yi
- China Research Center for Traditional Minority Medicine, Minzu University of China, Beijing 100081, China.
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Yin XY, Luo YM, Fu JJ, Zhong YQ, Liu QS. Determination of hyperoside and isoquercitrin in rat plasma by membrane-protected micro-solid-phase extraction with high-performance liquid chromatography. J Sep Sci 2012; 35:384-91. [PMID: 22258808 DOI: 10.1002/jssc.201100867] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
A novel method, micro-solid-phase extraction based on membrane-protected molecularly imprinted polymer, was developed to extract hyperoside and isoquercitrin in rat plasma. Synthesized hyperoside MIPs were packed in a porous polyether sulfone membrane envelope to perform extraction. The parameters sorbent materials, membrane types, extraction time and desorption conditions were optimized for micro-solid-phase extraction. Under the optimal conditions, correlation coefficients, 0.998 and 0.999, were obtained for hyperoside and isoquercitrin, respectively, with the linear range between 1 and 120 μg/mL. The absolute extraction recoveries from 84.5 to 89.3% were found. The method detection limits of hyperoside and isoquercitrin were 0.24 and 0.22 μg/mL, respectively. Compared with traditional methods, solid-phase extraction, liquid-liquid extraction and protein precipitation, the developed method was simple, highly efficient for extraction, environmentally friendly, and particularly suitable for complex biological samples.
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Affiliation(s)
- Xiao-Ying Yin
- College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, PR China
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Liu QS, Pang ZR, Liu R, He GR, Cui J, Yin XY. Effective compounds group of Mongolian prescriptions BAIMAI-SAN protect against peripheral neuropathy in lower limbs of rats through neuro protective effect. J Ethnopharmacol 2011; 135:786-791. [PMID: 21527327 DOI: 10.1016/j.jep.2011.04.026] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2011] [Revised: 04/08/2011] [Accepted: 04/11/2011] [Indexed: 05/30/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE BAIMAI-SAN prescription is a famous Chinese minority complex prescription used for curing neuropathy. MATERIALS AND METHODS The Effective Compounds Groups of BAIMAI-SAN (ECGBM) is determined by high through-put screening, and it includes picroside II, verbascose, taurine and ellagic acid and borneol. To research the potential protective effect of ECGBM on the function of peripheral neuropathy, diabetic rats with peripheral neuropathy were induced by streptozotocin and treated with ECGBM (0.1, 0.3, 0.9 mg/kg/day i.g.) for 75 days. Primary cortical neuronal cultures were subjected to high d-glucitol, and treated with ECGBM prophylactically. RESULTS The administration resulted in reductions in speed of sciatic motor nerve conduction velocity (MNCV), sensory nerve conduction velocity (SNCV) and response speed to pain in the sciatic nerve fiber. Data from primary cortical neuronal cultures experiments indicated that neuronal survival rates were increased, and LDH release was decreased and the loss of neurite length was alleviated in ECGBM group. CONCLUSIONS It is first report that ECGBM could protect the peripheral neuron in diabetic rat in vivo and in vitro. This activity may be associated with the neuron protective effect.
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Affiliation(s)
- Qing-Shan Liu
- National Research Center for Minority Medicine, Minzu University of China, Beijing 100081, PR China
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Li LY, Liu QS, Li L, Cao YJ, Yuan Q, Liang SW, Qu CM. A meta-analysis and systematic review of prophylactic endoscopic treatments for postpolypectomy bleeding. Int J Colorectal Dis 2011; 26:709-19. [PMID: 21311892 DOI: 10.1007/s00384-011-1141-8] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/16/2011] [Indexed: 02/04/2023]
Abstract
PURPOSE The aim of this meta-analysis and systematic review was to determine whether bleeding prophylaxis benefits patients after colonoscopic polypectomy. METHODS A systematic review of the literature was performed to find prospective randomized controlled trials of postpolypectomy hemorrhage prophylaxis. Studies were selected according to specific criteria and analyzed to generate pooled data. RESULTS Eight studies encompassing 2,595 polyps met the criteria for the meta-analysis. The rate of early bleeding was significantly decreased relative to the control when a single prophylactic technique was used [2.58% vs. 8.15%, OR = 0.34 (95% CI, 0.20-0.58), P < 0.0001]. The use of multiple prophylactic techniques resulted in a lower early postpolypectomy hemorrhage rate compared with the use of a single prophylactic technique [0% vs. 8.41%, OR = 0.12 (95% CI, 0.03-0.47), P = 0.002]. The late bleeding rate did not differ significantly between the monotherapy and control groups [0.61% vs. 1.39%, OR = 0.37 (95% CI, 0.11-1.28), P = 0.12], and the use of combined preventative techniques did not significantly decrease the late postpolypectomy bleeding (PPB) rate compared with use of a single prophylactic method [1.43% vs. 2.05%, OR = 0.70 (95% CI, 0.32-1.55), P = 0.38]. CONCLUSION Prophylactic endoscopic treatments are effective at reducing early PPB after colonoscopic polypectomy. However, patients with late PPB may not benefit from bleeding prophylaxis.
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Affiliation(s)
- L Y Li
- Department of Gastroenterology, Chinese PLA General Hospital, Beijing 100853, China.
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Abstract
AIM The effect of race on Crohn's disease (CD) remains uncertain. This study compared the characteristics of American white patients and Chinese patients with CD. METHOD A retrospective chart review was conducted for patients who required management of colorectal CD between 1985 and 2004 at either Cleveland Clinic Florida (CCF) or at the 301 Hospital in China. Data included a family history of CD, smoking history, location of the CD and histopathology. RESULTS The mean age of onset in the 153 patients was 29.8 ± 16.4 years for American white patients and 32.4 ± 15.3 years for Chinese patients (not significant). Sixty per cent of American white patients were women vs 37% of Chinese patients (P = 0.003). Twelve per cent of American white patients vs 1% of Chinese patients had a family history of CD (P = 0.016). American white patients had significantly higher rates of arthritis (32%vs 4%), abscess (19%vs 0%), rectal and perineal fistula (52%vs 0%), and disease involving the colon and rectum when compared with Chinese patients (all P < 0.05). American white patients had more colorectal sites involved and higher rates of extraintestinal diseases (40%vs 20%) than Chinese patients (all P < 0.05). Chinese patients had higher rates of ileocaecal disease (82%vs 52%) and deep ulcers (66%vs 24%) in the colorectum (all P < 0.001). There were no statistical differences in the incidence of smoking, perforation, intra-abdominal fistula, stenosis, bowel obstruction, toxic megacolon or granuloma formation. CONCLUSION This study found that colorectal CD had a more severe clinical presentation and pathological involvement in American white patients than in Chinese patients.
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Affiliation(s)
- C H Luo
- Department of Colorectal Surgery, Cleveland Clinic Florida, Weston, Florida, USA
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Abstract
AIM The effect of race on Crohn's disease (CD) remains uncertain. This study compared the characteristics of American white patients and Chinese patients with CD. METHOD A retrospective chart review was conducted for patients who required management of colorectal CD between 1985 and 2004 at either Cleveland Clinic Florida (CCF) or at the 301 Hospital in China. Data included a family history of CD, smoking history, location of the CD and histopathology. RESULTS The mean age of onset in the 153 patients was 29.8 ± 16.4 years for American white patients and 32.4 ± 15.3 years for Chinese patients (not significant). Sixty per cent of American white patients were women vs 37% of Chinese patients (P = 0.003). Twelve per cent of American white patients vs 1% of Chinese patients had a family history of CD (P = 0.016). American white patients had significantly higher rates of arthritis (32%vs 4%), abscess (19%vs 0%), rectal and perineal fistula (52%vs 0%), and disease involving the colon and rectum when compared with Chinese patients (all P < 0.05). American white patients had more colorectal sites involved and higher rates of extraintestinal diseases (40%vs 20%) than Chinese patients (all P < 0.05). Chinese patients had higher rates of ileocaecal disease (82%vs 52%) and deep ulcers (66%vs 24%) in the colorectum (all P < 0.001). There were no statistical differences in the incidence of smoking, perforation, intra-abdominal fistula, stenosis, bowel obstruction, toxic megacolon or granuloma formation. CONCLUSION This study found that colorectal CD had a more severe clinical presentation and pathological involvement in American white patients than in Chinese patients.
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Affiliation(s)
- C H Luo
- Department of Colorectal Surgery, Cleveland Clinic Florida, Weston, Florida, USA
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Yang M, Zhao JN, Liu QS, Sun LX, Yan PF, Tan ZC, Welz-Biermann U. Low-temperature heat capacities of 1-alkyl-3-methylimidazolium bis(oxalato)borate ionic liquids and the influence of anion structural characteristics on thermodynamic properties. Phys Chem Chem Phys 2011; 13:199-206. [DOI: 10.1039/c0cp01744b] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Tong B, Liu QS, Tan ZC, Welz-Biermann U. Thermochemistry of alkyl pyridinium bromide ionic liquids: calorimetric measurements and calculations. J Phys Chem A 2010; 114:3782-7. [PMID: 20235601 DOI: 10.1021/jp9047538] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Two ionic liquids, 1-ethylpyridinium bromide (EPBr) and 1-propylpyridinium bromide (PPBr), were prepared and the structures were characterized by 1H NMR. The thermodynamic properties of EPBr and PPBr were studied with adiabatic calorimetry (AC) and thermogravimatric analysis (TG-DTG). The heat capacity was precisely measured in the temperature range from 78 to 410 K by means of a fully automated adiabatic calorimeter. For EPBr, the melting temperature, enthalpy, and entropy of solid-liquid phase transition were determined to be 391.31 +/- 0.28 K, 12.77 +/- 0.09 kJ x mol(-1), and 32.63 +/- 0.22 J x K(-1) x mol(-1), respectively, and for PPBr they were 342.83 +/- 0.69 K, 10.97 +/- 0.05 kJ x mol(-1), and 32.00 +/- 0.10 J x K(-1) x mol(-1), respectively. The thermodynamic functions (H(T)(0) - H(298.15)(0)) and (S(T)(0) - S(298.15)(0)) were derived from the heat capacity data in the experimental temperature range with an interval of 5 K. The thermostablility of the compounds was further studied by TGA measurements. The phase change behavior and thermodynamic properties were compared and estimated in a series of alkyl pyridinium bromide ionic liquids. Results indicate that EPBr has higher melting and decomposition temperature, as well as phase transition enthalpy and entropy but lower heat capacity than PPBr due to their different molecular structures.
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Affiliation(s)
- Bo Tong
- Department of Chemistry, School of Chemical Engineering, Dalian University of Technology, Dalian 116023, China
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Khas-Erdene Q, Wang JQ, Bu DP, Wang L, Drackley JK, Liu QS, Yang G, Wei HY, Zhou LY. Short communication: responses to increasing amounts of free alpha-linolenic acid infused into the duodenum of lactating dairy cows. J Dairy Sci 2010; 93:1677-84. [PMID: 20338445 DOI: 10.3168/jds.2009-2681] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2009] [Accepted: 12/23/2009] [Indexed: 11/19/2022]
Abstract
Increasing the alpha-linolenic acid (LNA; 18:3 cis-9,cis-12,cis-15) content of milk fat might help promote consumers' health. The objective of this study was to determine the potential to alter the content of LNA in milk by duodenal infusion of a free fatty acid mixture rich in LNA. Four multiparous lactating Chinese Holstein cows fitted with duodenal cannulas were administered 2 treatments in a crossover design: an LNA-rich fatty acid infusion at varying concentrations (0, 40, 80, 120, and 160 g/d) versus a basal infusate control. Dry matter intake was not affected by LNA infusions. Milk production tended to decrease and was quadratically affected as LNA infusion increased, but 4% fat-corrected milk yield was not changed. Milk fat content tended to increase linearly with LNA infusion. Milk protein content was not changed by LNA infusion, whereas milk lactose content and yield were decreased quadratically as LNA infusion increased. Increasing the amount of LNA infused into the duodenum linearly increased concentrations of 18:3 cis-9,cis-12,cis-15 (0.61 to 25.4 g/100g of total fatty acids) and 18:2 cis-9,cis-12 in milk fat. Increasing LNA decreased the percentages of 4:0, 14:0, and 16:0 fatty acids linearly. Increasing LNA also linearly decreased the percentages of 18:1 cis-9 and 18:2 cis-9,trans-11 in milk fat. Milk fat content of 20:5 cis-5,cis-8,cis-11,cis-14,cis-17 was quadratically affected, whereas concentrations of 18:0, 18:1 trans-9, 18:1 trans-11, and 18:2 trans-10,cis-12 were not affected. Increasing the supply of 18:3 cis-9,cis-12,cis-15 to the small intestine linearly increased 18:3 cis-9,cis-12,cis-15 in milk fat and markedly altered milk fat composition.
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Affiliation(s)
- Q Khas-Erdene
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China
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Qin XY, Li T, Yan L, Liu QS, Tian Y. Tanshinone IIA protects against immune-mediated liver injury through activation of T-cell subsets and regulation of cytokines. Immunopharmacol Immunotoxicol 2010; 32:51-5. [PMID: 19653860 DOI: 10.1080/08923970903120997] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
BACKGROUND AND AIM Tanshione IIA (TSN) is the major active component of Salvia miltiorrhiza, a traditional Chinese Medicine. TSN protects against antioxidant-induced liver injury, although the exact mechanism is not well understood. MATERIALS AND METHODS In this study, the protective effects of TSN was examined by enzyme-linked immunosorbent assay (ELISA) and histochemistry of several cytokines. RESULTS TSN is found to significantly reduce plasma alanin aminotransferase and aspartate amino transferase levels in mice with concanavalin A-induced immune-mediated liver injury. TSN increases T lymphocyte subset CD3+, CD4+ and CD8+ ratios.Also, TSN significantly reduces inflammatory cytokines, including interleukin-2, interleukin-4, interferon-gamma and tumor necrosis factor alpha, while elevates anti-inflammatory cytokine, interleukin-10. CONCLUSIONS TSN may provide a potential drug candidate for liver injury therapeutics.
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Affiliation(s)
- Xiao-Yan Qin
- Laboratory of Biotechnology and State Key Laboratory of Chinese ethnic minority traditional medicine, College of Life& Environmental Science, Minzu University of China, Beijing, China.
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Qin XY, Li T, Yan L, Liu QS, Tian Y. Tanshinone IIA protects against immune-mediated liver injury through activation of t-cell subsets and regulation of cytokines. Immunopharmacol Immunotoxicol 2010. [DOI: 10.3109/08923970903120997] [Citation(s) in RCA: 14] [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: 01/28/2023]
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Abstract
Aerobic granular sludge cultivated in a pilot-scale sequencing batch reactor, through mechanical separation using metal sieves, was categorized into five size categories of0.09 (flocs), 0.35, 0.82, 1.65 and 2.54 mm in mean diameter. Granule microbial activiy of each size category and the activity of the sludge flocs were determined after exposure to phenol (0-3000 mg L(-1)) at various exposure times of 4, 12, and 24 hours. The microbial activity reduction follows a linear relationship with the increase in phenol concentration for both granules and sludge flocs. The C50 value, i.e., the phenol concentration causing 50% inhibition of the microbial activity, decreased significantly with the exposure time, but it increased with granule size. The C50 increased by 18% from 1273 mg L(-1) for sludge flocs to 1497 mg L(-1) for granules of size 2.54 mm at an exposure time of 24 hours. The results indicated that the granular structure could protect the microbial cells from phenol toxicity. The application of aerobic granules in wastewater treatment could provide an improved ability to tolerate toxic chemical shock, particularly at longer exposure times.
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Affiliation(s)
- Q S Liu
- School of the Built Environment, Singapore Polytechnic, Singapore.
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Gao M, Zhang WC, Liu QS, Hu JJ, Liu GT, Du GH. Pinocembrin prevents glutamate-induced apoptosis in SH-SY5Y neuronal cells via decrease of bax/bcl-2 ratio. Eur J Pharmacol 2008; 591:73-9. [PMID: 18625218 DOI: 10.1016/j.ejphar.2008.06.071] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2007] [Revised: 05/30/2008] [Accepted: 06/10/2008] [Indexed: 11/29/2022]
Abstract
Pinocembrin is the most abundant flavonoids in propolis, and has been proven to have antioxidant, antibacterial and anti-inflammatory property. To assess the protective effects of pinocembrin on neurons, SH-SY5Y neuronal cells were pretreated with pinocembrin for 2 h followed by co-treatment with glutamate (2 mM) for 12 h. Cell viability was determined by(3,4,5-dimethylthiazol-2-yl)-2,5-diphenylte-trazolium bromide assay, and apoptosis was confirmed by cell morphology, capillary zone electrophoresis and flow cytometry assay. Cell morphology was evaluated with Hoechst33258/PI dye. Treatment with pinocembrin (10(-5), 10(-6), 10(-7) mol/l) increased cell viability dose-dependently, inhibited LDH release and attenuated apoptosis. Intracellular free [Ca(2+)] was increased after glutamate exposure, and this increase was attenuated in cells treated with pinocembrin. bax mRNA expression increased remarkably following glutamate exposure and pinocembrin treatment manifested a reduction effect. bcl-2 mRNA expression changes were not detected in groups with or without pinocembrin. Western blotting results indicated that pinocembrin treatment reduced the expression of Bax and had no effect on Bcl-2, thus decreased the Bax-Bcl-2 ratio, which is in consistent with the gene expression result. Pinocembrin could also down-regulate the expression of p53 protein, and inhibit the release of cytochrome c from mitochondria to cytosol. Thus we conclude that pinocembrin exerts its neuroprotective effects in glutamate injury model partly by inhibiting p53 expression, thus Bax-Bcl-2 ratio, and the release of cytochrome c.
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Affiliation(s)
- Mei Gao
- Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
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42
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Tong J, Liu QS, Xu WG, Fang DW, Yang JZ. Estimation of Physicochemical Properties of Ionic Liquids 1-Alkyl-3-methylimidazolium Chloroaluminate. J Phys Chem B 2008; 112:4381-6. [DOI: 10.1021/jp711767z] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jing Tong
- College of Chemistry, Laboratory of Green Chemistry, Liaoning University, Shenyang 110036, People's Republic of China
| | - Qing-Shan Liu
- College of Chemistry, Laboratory of Green Chemistry, Liaoning University, Shenyang 110036, People's Republic of China
| | - Wei-Guo Xu
- College of Chemistry, Laboratory of Green Chemistry, Liaoning University, Shenyang 110036, People's Republic of China
| | - Da-Wei Fang
- College of Chemistry, Laboratory of Green Chemistry, Liaoning University, Shenyang 110036, People's Republic of China
| | - Jia-Zhen Yang
- College of Chemistry, Laboratory of Green Chemistry, Liaoning University, Shenyang 110036, People's Republic of China
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Liu QS, Gao M, Zhu SY, Li SJ, Zhang L, Wang QJ, Du GH. The novel mechanism of recombinant human ciliary neurotrophic factor on the anti-diabetes activity. Basic Clin Pharmacol Toxicol 2007; 101:78-84. [PMID: 17651306 DOI: 10.1111/j.1742-7843.2007.00092.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In a previous study, the ciliary neurotrophic factor (CNTF) were demonstrated to lead to weight-loss partly by up-regulating the energy metabolism and the expression of uncoupling protein-1, mitochondrial transcription factor A and nuclear respiratory factor-1 in adipose tissues or muscle. To investigate the up-stream regulators of the expression, recombinant human CNTF (rhCNTF) (0.1, 0.3 and 0.9 mg/kg/day subcutaneously) were administered to KK-Ay mice for 30 days, resulting in reduction of perirenal fat mass, serum free fatty acids and islet triacylglycerol; furthermore, the values of oral glucose tolerance test were found improved. In brown adipose tissues, the gene expressions of peroxisome proliferator-activated receptor alpha (PPARalpha) and peroxisome proliferator-activated receptor coactivator-1 alpha (PGC-1alpha) were found to be up-regulated by rhCNTF. To the best of our knowledge, the changes of gene expression of PPARalpha and PGC-1alpha represent new insights into the mechanisms of anti-diabetes by rhCNTF. In addition, the activity of mitochondrial complexII was found to be increased by rhCNTF. Stimulation of PPARalpha, PGC-1alpha, uncoupling protein-1 and enhanced activity of mitochondrial complex II may be associated with the effects of anti-diabetes. The present study indicates new mechanisms of the activity and mechanisms on anti-diabetes of rhCNTF, which may be a novel anti-diabetes reagent partly acting by enhancing energy metabolism.
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Liu QS, Wang QJ, Du GH, Zhu SY, Gao M, Zhang L, Zhu JM, Cao JF. Recombinant human ciliary neurotrophic factor reduces weight partly by regulating nuclear respiratory factor 1 and mitochondrial transcription factor A. Eur J Pharmacol 2007; 563:77-82. [PMID: 17397829 DOI: 10.1016/j.ejphar.2007.02.034] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2006] [Revised: 01/28/2007] [Accepted: 02/01/2007] [Indexed: 11/27/2022]
Abstract
Ciliary neurotrophic factor (CNTF) can lead to weight loss by up-regulating energy metabolism and the expression of UCP-1 in mitochondria. To investigate the up-stream regulators of the expression of UCP-1, recombinant human CNTF (rhCNTF) (0.1, 0.3, 0.9 mg/kg/day s.c.) administered to KK-Ay mice for 30 days resulting in reductions in body weight and perirenal fat mass. In brown adipose tissues, the gene expressions of nuclear respiratory factor (NRF)-1, mitochondrial transcription factor A (TFam) and uncoupling protein (UCP)-1 were found up-regulated by rhCNTF. To the best of our knowledge, these effects represent new insights on the mechanisms of action of weight loss by rhCNTF. In addition, we also found that rhCNTF increased the activity of mitochondrial complex IV. The stimulation of NRF-1, TFam, UCP-1 and the enhanced activity of mitochondrial complex IV may be associated with remedying obesity. The result indicates that rhCNTF can enhance the expressions of NRF-1 and TFam, both of which can up-regulate the expression of UCP-1.
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Affiliation(s)
- Qing-Shan Liu
- Department of Pharmacology, China Pharmaceutical University, Nanjing 210009 PR China
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Tong J, Liu QS, Guan W, Yang JZ. Estimation of Physicochemical Properties of Ionic Liquid C6MIGaCl4 Using Surface Tension and Density. J Phys Chem B 2007; 111:3197-200. [PMID: 17388476 DOI: 10.1021/jp068793k] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An ionic liquid (IL) C6MIGaCl4 (1-methyl-3-hexylimidazolium chlorogallate) was prepared by directly mixing GaCl3 and 1-methyl-3-hexylimidazolium chloride with molar ratio of 1/1 under dry argon. The density and surface tension of the IL were determined in the temperature range of 283.15-338.15 K. The ionic volume and surface entropy of the IL were estimated by extrapolation, respectively. In terms of Glasser's theory, the standard molar entropy and lattice energy of the IL were estimated, respectively. By use of Kabo's method, the molar enthalpy of vaporization of the IL, Delta lgHm0 (298 K), at 298 K was estimated. According to the interstice model, the thermal expansion coefficient of IL C6MIGaCl4, alpha, was calculated and in comparison with experimental value; their magnitude order is in good agreement.
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Affiliation(s)
- Jing Tong
- Department of Chemistry, Liaoning University, Shenyang, 110036, People's Republic of China
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Liu QS, Liu Y, Tay STL, Show KY, Ivanov V, Benjamin M, Tay JH. Startup of pilot-scale aerobic granular sludge reactor by stored granules. Environ Technol 2005; 26:1363-9. [PMID: 16372571 DOI: 10.1080/09593332608618616] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
The startup of a pilot-scale aerobic granular sludge reactor was investigated by seeding with 4-month stored aerobic granules. Two liters of granules were inoculated into the reactor (5.9% of reactor volume), which gave a biomass concentration of 1.03 g l(-1). Experimental results showed that seeding granules could be successfully maintained in the reactor. The microbial activity of seeding granules could be fully recovered to that of fresh granules after 2 days of operation, and new granules started to grow after day 5. Newly developed aerobic granules at stable period had similar size and morphology as seeding granules, and a biomass concentration of 6.0 g l(-1) was achieved in the reactor. The experiment demonstrated for the first time that stored aerobic granules could be used for easy and quick startup of aerobic granular sludge reactor.
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Affiliation(s)
- Q S Liu
- Environmental Engineering Research Centre, School of Civil and Environmental Engineering, Nanyang Technological University, Singapore
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Tay JH, Liu QS, Liu Y. The effect of upflow air velocity on the structure of aerobic granules cultivated in a sequencing batch reactor. Water Sci Technol 2004; 49:35-40. [PMID: 15303720] [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: 05/24/2023]
Abstract
The effect of upflow air velocity on the formation and structure of aerobic granules was studied in three column sequencing batch reactors. Upflow aeration would be the major cause of hydrodynamic shear force in the column reactor. Results showed that high upflow air velocity resulted in more compact, denser, rounder, stronger and smaller aerobic granules, while high biomass retention in the reactor was achieved. It was found that high upflow air velocity could induce granular sludge to secrete more cell polysaccharides which in turn contributed to the compact and strong structure. It appears from this study that the structure of aerobic granules could be controlled by manipulating the upflow air velocity.
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Affiliation(s)
- J H Tay
- Environmental Engineering Research Centre, School of Civil and Environmental Engineering, Nanyang Technological University, Nanyang Avenue, Singapore.
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Abstract
The development of aerobic granules was studied in four column-type sequential aerobic sludge blanket reactors fed with different substrate concentrations ranging from 500 to 3000 mg l(-1) COD. Results showed that aerobic granules successfully formed in all reactors fed with different substrate concentrations, indicating that the formation of aerobic granules is independent of the substrate concentration. The granule size, roundness, compactness, physical strength, as well as cell surface hydrophobicity and cell polysaccharides contents of the cultivated aerobic granules were investigated. It was shown that aerobic granules formed with different substrate concentrations had similar roundness and compactness. However, the size of aerobic granules slightly increased with an increase in substrate concentration, while granule strength decreased with substrate concentration. It was found that there was a significant increase in cell surface hydrophobicity and cell polysaccharides of the aerobic granules compared to that of seed sludge. The high cell surface hydrophobicity and high cell polysaccharides contents were believed to play an important role in the formation of aerobic granules. However, substrate concentration seems not to be a governing factor for the formation of aerobic granules. The results of this study would be useful for developing aerobic granules-based bioreactor and for better understanding of the mechanism of aerobic granulation. It was also clearly demonstrated that aerobic granules-based bioreactor would have great potential in the treatment of high-strength wastewater.
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Affiliation(s)
- Q S Liu
- Environmental Engineering Research Centre, School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798
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49
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Tay JH, Liu QS, Liu Y. Characteristics of aerobic granules grown on glucose and acetate in sequential aerobic sludge blanket reactors. Environ Technol 2002; 23:931-936. [PMID: 12212607 DOI: 10.1080/09593332308618363] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Aerobic granules were cultivated in two column-type sequential aerobic sludge blanket reactors fed with glucose and acetate, respectively. The characteristics of aerobic granules were investigated. Results indicated that the glucose- and acetate-fed granules have comparable characteristics in terms of settling velocity, size, shape, biomass density, hydrophobicity, physical strength, microbial activity and storage stability. Substrate component does not seem to be a key factor on the formation of aerobic granules. However, microbial diversity of the granules is closely associated with the carbon sources supplied to the reactors. Compared with the conventional activated sludge flocs, aerobic granules exhibit excellent physical characteristics that would be essential for industrial application. This research provides a complete set of characteristics data of aerobic granules grown on glucose and acetate, which would be useful for further development of aerobic granules-based compact bioreactor for handling high strength organic wastewater.
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Affiliation(s)
- J H Tay
- Environmental Engineering Research Center, School of Civil and Environmental Engineering, Nanyang Technological University, Singapore
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Tay JH, Liu QS, Liu Y. Aerobic granulation in sequential sludge blanket reactor. Water Sci Technol 2002; 46:13-18. [PMID: 12361000] [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: 05/23/2023]
Abstract
Aerobic granulation was studied in a column-type of sequential sludge blanket reactor. Reactor was operated 4 hours per cycle under a chemical oxygen demand (COD) loading rate of 6.0 kg/m3/d by using acetate as substrate. Results showed that aerobic granules with a mean diameter of 0.35 mm were observed at cycle 42. With granulation proceeding, the sludge volume index (SVI) value gradually decreased, and to an average value of 50 mL/g at stable granulation period. Observation of granules' microstructure by scanning electron microscopy (SEM) showed that rod bacteria were dominant in granules with lots of cavities presented. An increase in cell hydrophobicity was observed after the appearance of aerobic granules. The cell hydrophobicity of sludge was found to be about 50% higher after granulation. It appears that high hydrophobicity could induce cell attachment and further strengthen cell-cell interaction; cell hydrophobicity might therefore play a major role in the formation of aerobic granules.
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Affiliation(s)
- J H Tay
- Division of Environmental and Water Resources Engineering, School of Civil and Environmental Engineering, Nanyang Technological University, Singapore.
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