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Xu HW, Chen YM, Yang Z, Hu YH, Xu BB. [Associations of cardiometabolic multimorbidity with grip strength and gait speed among older Chinese adults]. Zhonghua Liu Xing Bing Xue Za Zhi 2023; 44:1183-1189. [PMID: 37661607 DOI: 10.3760/cma.j.cn112338-20230108-00015] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 09/05/2023]
Abstract
Objective: To investigate the associations of cardiometabolic multimorbidity (CMM) with grip strength and gait speed among older Chinese adults. Methods: This study included participants aged ≥60 years from the China Health and Retirement Longitudinal Survey during 2011-2015. Generalized estimating equation models were employed to estimate the associations of CMM with grip strength and gait speed. Results: A total of 6 357 participants were included to measure grip strength and 6 250 participants to measure gait speed. Compared with no cardiometabolic disease, participants with 1 (β=-0.018, 95%CI: -0.026--0.010), 2 (β=-0.029, 95%CI: -0.041- -0.018), and ≥3 (β=-0.050, 95%CI: -0.063- -0.037) cardiometabolic diseases were associated with a decreased grip strength. The associations between cardiometabolic disease counts (1: β=-0.052, 95%CI: -0.326-0.222; 2: β=-0.083, 95%CI: -0.506-0.340; ≥3: β=-0.186, 95%CI: -0.730-0.358) and gait speed were not statistically significant. The predictive value of gait speed of the participants with 0, 1, 2, and ≥3 cardiometabolic diseases were found to be 1.98 (95%CI: 1.38-2.58), 1.93 (95%CI: 1.34-2.51), 1.89 (95%CI: 1.18-2.61), and 1.79 (95%CI: 1.10-2.48) m/s respectively, which was clinically significant for the magnitude of the decrease. Cardiometabolic combinations with a higher risk of decreased grip strength and gait speed mainly seen in diabetes. Conclusions: Cardiometabolic disease counts and combinations were associated with grip strength and gait speed. Grip strength and gait speed can be used to measure CMM severity.
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Affiliation(s)
- H W Xu
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China Peking University Medical Informatics Center, Beijing 100191, China
| | - Y M Chen
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China Peking University Medical Informatics Center, Beijing 100191, China
| | - Z Yang
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China Peking University Medical Informatics Center, Beijing 100191, China
| | - Y H Hu
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China Peking University Medical Informatics Center, Beijing 100191, China
| | - B B Xu
- Peking University Medical Informatics Center, Beijing 100191, China Center for Health Aging, Peking University Health Science Center, Beijing 100191, China
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2
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Xu BS, Xu HW, Li N, Liu Y, Jiang HF, Zhang KH, Du LL. [Comparative study of unilateral biportal endoscopy and coaxial large channel endoscopy for lumbar spinal stenosis]. Zhonghua Yi Xue Za Zhi 2022; 102:3274-3280. [PMID: 36319179 DOI: 10.3760/cma.j.cn112137-20220504-00984] [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: 06/16/2023]
Abstract
Objective: To compare the efficacy of unilateral biportal endoscopy (UBE) and coaxial large channel endoscopy for lumbar spinal stenosis. Methods: A total of 176 patients with lumbar spinal stenosis treated in Tianjin Hospital from March 2015 to October 2021 were included in this study. Of the patients, 110 cases were treated with UBE, including 52 males and 58 females, with a mean age of (75.1±10.4) years; while 66 cases were treated with coaxial large channel endoscopy, including 31 males and 35 females, with an average age of (77.2±13.1) years. The visual analogue scale (VAS) score of pain and Oswestry disability index (ODI) were compared before and after surgery between the two groups, with the improvement rate calculated. The operation time, intraoperative blood loss, perioperative conditions and complications were compared. The operation efficacy was evaluated according to MacNab scale and was compared between the two groups. Results: There was no significant differences in age, gender, disease course, VAS of pain, ODI and index levels between the two groups before operation (all P>0.05). The operation time and postoperative drainage in UBE group and coaxial large channel endoscopy group were comparable [(60.1±12.4)min, (62.5±13.2)min and (103.8±20.7)ml, (98.5±22.1)ml, respectively, both P>0.05]. After the operation, the VAS score of low back pain, VAS score of leg pain and ODI of the two groups were all lower than those before operation, and decreased continuously during follow-up; and under the repeated measures analysis of variance, significant differences were found between different time points (all P<0.05), no significant difference was found between the two groups (all P>0.05), nor interaction between groups and time points was detected (all P>0.05). The patients were followed-up for (18.0±4.2) months (6 to 30 months). There was no significant difference in VAS and ODI improvement rates and excellent rate of efficacy between the two groups at the last follow-up (all P>0.05). Conclusions: Both UBE and coaxial large channel endoscopy can provide excellent results for lumbar spinal stenosis. UBE has sufficient decompression and is convenient to explore and remove the herniated disc.
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Affiliation(s)
- B S Xu
- Department of Minimally Invasive Spine Surgery, Tianjin Hospital, Tianjin 300211, China
| | - H W Xu
- Department of Minimally Invasive Spine Surgery, Tianjin Hospital, Tianjin 300211, China
| | - N Li
- Department of Minimally Invasive Spine Surgery, Tianjin Hospital, Tianjin 300211, China
| | - Y Liu
- Department of Minimally Invasive Spine Surgery, Tianjin Hospital, Tianjin 300211, China
| | - H F Jiang
- Department of Minimally Invasive Spine Surgery, Tianjin Hospital, Tianjin 300211, China
| | - K H Zhang
- Department of Minimally Invasive Spine Surgery, Tianjin Hospital, Tianjin 300211, China
| | - L L Du
- Department of Minimally Invasive Spine Surgery, Tianjin Hospital, Tianjin 300211, China
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Song XY, Wu WF, Dai YB, Xu HW, Roman A, Wang L, Warner M, Gustafsson JÅ. Ablation of Liver X receptor β in mice leads to overactive macrophages and death of spiral ganglion neurons. Hear Res 2022; 422:108534. [PMID: 35623301 DOI: 10.1016/j.heares.2022.108534] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 04/30/2022] [Accepted: 05/20/2022] [Indexed: 11/30/2022]
Abstract
Age-related hearing loss is the most common type of hearing impairment, and is typically characterized by the loss of spiral ganglion neurons (SGNs). The two Liver X receptors (LXRs) are oxysterol-activated nuclear receptors which in adults, regulate genes involved in cholesterol homeostasis and modulation of macrophage activity. LXRβ plays a key role in maintenance of health of dopaminergic neurons in the substantia nigra, large motor neurons in the spinal cord, and retinal ganglion cells in adult mice. We now report that LXRβ is expressed in the SGNs of the cochlea and that loss of LXRβ leads to age-related cochlea degeneration. We found that in the cochlea of LXRβ-/- mice, there is loss of SGNs, activation of macrophages, demyelination in the spiral ganglion, decrease in glutamine synthetase (GS) expression and increase in glutamate accumulation in the cochlea. Part of the cause of damage to the SGNs might be glutamate toxicity which is known to be very toxic to these cells. Our study provides a so far unreported role of LXRβ in maintenance of SGNs whose loss is a very common cause of hearing impairment.
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Affiliation(s)
- Xiao-Yu Song
- Center for Nuclear Receptors and Cell Signaling, Department of Biology and Biochemistry, University of Houston, Houston, TX 77204, United States
| | - Wan-Fu Wu
- Center for Nuclear Receptors and Cell Signaling, Department of Biology and Biochemistry, University of Houston, Houston, TX 77204, United States
| | - Yu-Bing Dai
- Center for Nuclear Receptors and Cell Signaling, Department of Biology and Biochemistry, University of Houston, Houston, TX 77204, United States
| | - Hai-Wei Xu
- Southwest Hospital/Southwest Eye Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Andrew Roman
- Center for Nuclear Receptors and Cell Signaling, Department of Biology and Biochemistry, University of Houston, Houston, TX 77204, United States
| | - Li Wang
- Center for Nuclear Receptors and Cell Signaling, Department of Biology and Biochemistry, University of Houston, Houston, TX 77204, United States
| | - Margaret Warner
- Center for Nuclear Receptors and Cell Signaling, Department of Biology and Biochemistry, University of Houston, Houston, TX 77204, United States
| | - Jan-Åke Gustafsson
- Center for Nuclear Receptors and Cell Signaling, Department of Biology and Biochemistry, University of Houston, Houston, TX 77204, United States; Center for Innovative Medicine, Department of Biosciences and Nutrition, Karolinska Institutet, Novum, Stockholm 14186, Sweden.
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4
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Su HX, Chen ZS, Xu HW, Luo Y, Wang KP, Hu YH, Xu BB. [Relationship between obesity and death by multi-morbidity status in older adults in China]. Zhonghua Liu Xing Bing Xue Za Zhi 2022; 43:324-329. [PMID: 35345285 DOI: 10.3760/cma.j.cn112338-20210831-00697] [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: 06/14/2023]
Abstract
Objective: To explore the relationship between obesity status and death stratified by different multi-morbidity status in older adults in China. Methods: Data for older Chinese adults aged ≥65 years were from Chinese Longitudinal Healthy Longevity Survey (CLHLS). Multi-morbidity patterns based on 13 chronic conditions were explored using exploratory factor analysis. Cox models were used to examine relationships between obesity status and death stratified by disease count and multi-morbidity patterns at baseline, respectively. Besides, obesity status was defined by baseline body mass index and waist circumference. Results: A total of 6 272 participants were included in the analyses. Multi-morbidity including cardio-metabolic, sensory perception and other patterns were identified. For those without any chronic condition, compared with those without central obesity, central obesity was associated with a higher risk for death (HR=1.66, 95%CI:1.04-2.66). For those only with one chronic condition, compared with normal weight, underweight was associated with a higher risk for death (HR=1.41, 95%CI: 1.10-1.80). For those with multi-morbidity, compared with normal weight, underweight increased the risk for death (HR=1.19, 95%CI:1.05-1.34). Compared with those without central obesity, central obesity decreased the risk for death (HR=0.88, 95%CI:0.78-0.99). Conclusions: Relationships between obesity status and death varied by multi-morbidity status in older adults in China. Underweight and non-central obesity were associated with increased risks for death in older adults with only one chronic disease or multi-morbidity. Therefore, it is necessary to pay attention to multi-morbidity status in the management of obesity in older adults and provide effective targeted body weight management plan.
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Affiliation(s)
- H X Su
- School of Public Health, Peking University, Beijing 100191, China Medical Informatics Center, Peking University, Beijing 100191, China
| | - Z S Chen
- School of Public Health, Peking University, Beijing 100191, China Medical Informatics Center, Peking University, Beijing 100191, China
| | - H W Xu
- School of Public Health, Peking University, Beijing 100191, China Medical Informatics Center, Peking University, Beijing 100191, China
| | - Y Luo
- School of Public Health, Peking University, Beijing 100191, China Medical Informatics Center, Peking University, Beijing 100191, China
| | - K P Wang
- Graduate School of Social Work, University of Denver, Denver, Colorada 80208, USA
| | - Y H Hu
- School of Public Health, Peking University, Beijing 100191, China Medical Informatics Center, Peking University, Beijing 100191, China
| | - B B Xu
- School of Public Health, Peking University, Beijing 100191, China Medical Informatics Center, Peking University, Beijing 100191, China
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5
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Xu XT, Xu HW, Cui YF, Li W, Wang Y, Zhang XY. Molecular dynamics study of three amino acids as corrosion inhibitor for copper in hydrochloric acid solution. J Mol Model 2022; 28:55. [PMID: 35129711 DOI: 10.1007/s00894-022-05038-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 01/19/2022] [Indexed: 11/26/2022]
Abstract
Molecular dynamics (MD) simulation is used to study the corrosion inhibition mechanism of cysteine (Cys), glutamic (Glu) and glycine (Gly) for copper in hydrochloric acid solution. The adsorption energy and radial distribution function results show that all three amino acids can spontaneously adsorb on Cu (111) surface by chemical adsorption. The absolute value of adsorption energy and intensity is Cys > Glu > Gly. The diffusion coefficient and relative concentration curve show that all the three amino acids can inhibit the diffusion and aggregation ability of corrosion particles, so the three amino acids not only can slow down the aggregation of corrosive particles, but also effectively repel corrosive particles to protect the substrate. The inhibition ability obtained by the MD simulation shows the trend of Cys > Glu > Gly, which is consistent with the experimental results. The inhibition efficiency is determined by both the adsorption strength on the substrate surface and inhibition ability for the diffusion and aggregation ability of corrosion particles.
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Affiliation(s)
- X T Xu
- School of Mechanical Science and Engineering, Northeast Petroleum University, 199 Fazhan Road, Daqing, 163318, People's Republic of China
- Heilongjiang Key Laboratory of Petroleum and Petrochemical Multiphase Treatment and Pollution Prevention, Daqing, 163318, Heilongjiang, China
| | - H W Xu
- School of Mechanical Science and Engineering, Northeast Petroleum University, 199 Fazhan Road, Daqing, 163318, People's Republic of China
- Heilongjiang Key Laboratory of Petroleum and Petrochemical Multiphase Treatment and Pollution Prevention, Daqing, 163318, Heilongjiang, China
| | - Y F Cui
- AECC Harbin Dongan ENGINE Co., Ltd., Harbin, China
| | - W Li
- School of Mechanical Science and Engineering, Northeast Petroleum University, 199 Fazhan Road, Daqing, 163318, People's Republic of China
| | - Y Wang
- School of Mechanical Science and Engineering, Northeast Petroleum University, 199 Fazhan Road, Daqing, 163318, People's Republic of China.
- Heilongjiang Key Laboratory of Petroleum and Petrochemical Multiphase Treatment and Pollution Prevention, Daqing, 163318, Heilongjiang, China.
| | - X Y Zhang
- School of Mechanical Science and Engineering, Northeast Petroleum University, 199 Fazhan Road, Daqing, 163318, People's Republic of China.
- Heilongjiang Key Laboratory of Petroleum and Petrochemical Multiphase Treatment and Pollution Prevention, Daqing, 163318, Heilongjiang, China.
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Li SY, Liu Y, Wang L, Wang F, Zhao TT, Li QY, Xu HW, Meng XH, Hao J, Zhou Q, Wang L, Yin ZQ. A phase I clinical trial of human embryonic stem cell-derived retinal pigment epithelial cells for early-stage Stargardt macular degeneration: 5-years' follow-up. Cell Prolif 2021; 54:e13100. [PMID: 34347352 PMCID: PMC8450131 DOI: 10.1111/cpr.13100] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 06/23/2021] [Accepted: 06/27/2021] [Indexed: 12/12/2022] Open
Abstract
Objectives To evaluate the long‐term biosafety and efficacy of transplantation of human embryonic stem cells‐derived retinal pigment epithelial (hESC‐RPE) cells in early‐stage of Stargardt macular degeneration (STGD1). Materials and methods Seven patients participated in this prospective clinical study, where they underwent a single subretinal transplantation of 1 × 105 hESC‐RPE cells in one eye, whereas the fellow eye served as control. These patients were reassessed for a 60‐month follow‐up through systemic and ophthalmic examinations. Results None of the patients experienced adverse reactions systemically or locally, except for two who had transiently high intraocular pressure post‐operation. Functional assessments demonstrated that all of the seven operated eyes had transiently increased or stable visual function 1‐4 months after transplantation. At the last follow‐up visit, two of the seven eyes showed visual function loss than the baseline; however, one of them showed a stable visual acuity when compared with the change of fellow eye. Obvious small high reflective foci in the RPE layer were displayed after the transplantation, and maintained until the last visit. Interestingly, three categories of patients who were classified based on autofluorescence, exhibited distinctive patterns of morphological and functional change. Conclusions Subretinal transplantation of hESC‐RPE in early‐stage STGD1 is safe and tolerated in the long term. Further investigation is needed for choosing proper subjects according to the multi‐model image and function assessments.
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Affiliation(s)
- Shi-Ying Li
- Southwest Hospital/Southwest Eye Hospital, Third Military Medical University (Army Medical University), Chongqing, China.,Key Laboratory of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, China
| | - Yong Liu
- Southwest Hospital/Southwest Eye Hospital, Third Military Medical University (Army Medical University), Chongqing, China.,Key Laboratory of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, China
| | - Lei Wang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,Stem Cell and Regenerative Medicine Innovation Institute, Chinese Academy of Sciences, Beijing, China.,National Stem Cell Resource Center, Chinese Academy of Sciences, Beijing, China
| | - Fang Wang
- Southwest Hospital/Southwest Eye Hospital, Third Military Medical University (Army Medical University), Chongqing, China.,Key Laboratory of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, China
| | - Tong-Tao Zhao
- Southwest Hospital/Southwest Eye Hospital, Third Military Medical University (Army Medical University), Chongqing, China.,Key Laboratory of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, China
| | - Qi-You Li
- Southwest Hospital/Southwest Eye Hospital, Third Military Medical University (Army Medical University), Chongqing, China.,Key Laboratory of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, China
| | - Hai-Wei Xu
- Southwest Hospital/Southwest Eye Hospital, Third Military Medical University (Army Medical University), Chongqing, China.,Key Laboratory of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, China
| | - Xiao-Hong Meng
- Southwest Hospital/Southwest Eye Hospital, Third Military Medical University (Army Medical University), Chongqing, China.,Key Laboratory of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, China
| | - Jie Hao
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,Stem Cell and Regenerative Medicine Innovation Institute, Chinese Academy of Sciences, Beijing, China.,National Stem Cell Resource Center, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Qi Zhou
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,Stem Cell and Regenerative Medicine Innovation Institute, Chinese Academy of Sciences, Beijing, China.,National Stem Cell Resource Center, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Liu Wang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,Stem Cell and Regenerative Medicine Innovation Institute, Chinese Academy of Sciences, Beijing, China.,National Stem Cell Resource Center, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Zheng-Qin Yin
- Southwest Hospital/Southwest Eye Hospital, Third Military Medical University (Army Medical University), Chongqing, China.,Key Laboratory of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, China
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Rong LY, Ran L, Li SY, Meng XH, Long YL, Xu HW. Intravitreally injected ranibizumab versus photodynamic therapy for CNV secondary to choroidal osteoma: a 7-year follow-up case report. Int J Ophthalmol 2021; 14:940-944. [PMID: 34150552 DOI: 10.18240/ijo.2021.06.22] [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] [Received: 08/23/2020] [Accepted: 10/30/2020] [Indexed: 11/23/2022] Open
Affiliation(s)
- Li-Yuan Rong
- Southwest Hospital, Southwest Eye Hospital, the Third Military Medical University (Army Medical University), Chongqing 400038, China.,Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing 400038, China.,The Ophthalmology Division of Chinese People's Liberation Army General Hospital, Beijing 100039, China
| | - Li Ran
- Southwest Hospital, Southwest Eye Hospital, the Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Shi-Ying Li
- Southwest Hospital, Southwest Eye Hospital, the Third Military Medical University (Army Medical University), Chongqing 400038, China.,Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing 400038, China.,Department of Ophthalmology, Xiang'an Hospital of Xiamen University; Medical Center of Xiamen University; School of Medicine, Xiamen University, Xiamen 361102, Fujian Province, China.,Eye Institute of Xiamen University, Xiamen 361102, Fujian Province, China
| | - Xiao-Hong Meng
- Southwest Hospital, Southwest Eye Hospital, the Third Military Medical University (Army Medical University), Chongqing 400038, China.,Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing 400038, China
| | - Yan-Ling Long
- Southwest Hospital, Southwest Eye Hospital, the Third Military Medical University (Army Medical University), Chongqing 400038, China.,Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing 400038, China
| | - Hai-Wei Xu
- Southwest Hospital, Southwest Eye Hospital, the Third Military Medical University (Army Medical University), Chongqing 400038, China.,Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing 400038, China
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8
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Xu HW, Liu FH, Wan BB. [Advances in the study of smell dysfunction in patients with coronavirus disease 2019]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2021; 56:668-673. [PMID: 34256497 DOI: 10.3760/cma.j.cn115330-20210102-00003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Affiliation(s)
- H W Xu
- Department of Otorhinolaryngology, Lishui Municipal Central Hospital, Lishui 323000, Zhejiang Province, China
| | - F H Liu
- Department of Otorhinolaryngology, Lishui Municipal Central Hospital, Lishui 323000, Zhejiang Province, China
| | - B B Wan
- Department of Otorhinolaryngology, Lishui Municipal Central Hospital, Lishui 323000, Zhejiang Province, China
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Wang M, Wu X, Yu L, Hu ZY, Li X, Meng X, Lv CT, Kim GY, Choi YH, Wang Z, Xu HW, Jin CY. LCT-3d Induces Oxidative Stress-Mediated Apoptosis by Upregulating Death Receptor 5 in Gastric Cancer Cells. Front Oncol 2021; 11:658608. [PMID: 33937072 PMCID: PMC8085419 DOI: 10.3389/fonc.2021.658608] [Citation(s) in RCA: 2] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 03/22/2021] [Indexed: 12/18/2022] Open
Abstract
Gastric cancer is a global health problem. In this study, we investigate the role of a novel Indole derivative, named LCT-3d, in inhibiting the growth of gastric cancer cells by MTT assay. The Western blotting results showed that LCT-3d modulated the mitochondrial-related proteins and Cleaved-Caspases 3/9, to induce cell apoptosis. The up-regulation of Death receptor 5 (DR5) in MGC803 cells was observed with LCT-3d treatment. Knockdown of DR5 on MGC803 cells partially reversed the LCT-3d-induced mitochondrial apoptosis. The level of Reactive Oxygen Species (ROS) in MGC803 cells was increased with LCT-3d treatment and could be blocked with the pretreatment of the ROS inhibitor N-Acetylcysteine (NAC). The results demonstrate that the elevating ROS can up-regulate the expression of DR5, resulting in apoptosis via mitochondrial pathway. Although the nuclear factor erythroid-2 related factor 2 (Nrf2) pathway served an important role in protecting gastric cancer cells against the injury of ROS, it can’t reverse LCT-3d-induced cell apoptosis. Taken together, our study showed that LCT-3d induced apoptosis via DR5-mediated mitochondrial apoptotic pathway in gastric cancer cells. LCT-3d could be a novel lead compound for development of anti-cancer activity in gastric cancer.
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Affiliation(s)
- Menglin Wang
- Key Laboratory of Advanced Technology for Drug Preparation, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
| | - Xinxin Wu
- Key Laboratory of Advanced Technology for Drug Preparation, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
| | - Lu Yu
- Key Laboratory of Advanced Technology for Drug Preparation, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
| | - Zi-Yun Hu
- Key Laboratory of Advanced Technology for Drug Preparation, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
| | - Xiaobo Li
- Key Laboratory of Advanced Technology for Drug Preparation, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
| | - Xia Meng
- Key Laboratory of Advanced Technology for Drug Preparation, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
| | - Chun-Tao Lv
- Key Laboratory of Advanced Technology for Drug Preparation, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
| | - Gi-Young Kim
- Department of Marine Life Sciences, Jeju National University, Jeju, South Korea
| | - Yung Hyun Choi
- Department of Biochemistry, College of Oriental Medicine, Dong-Eui University, Busan, South Korea
| | - Zhengya Wang
- Key Laboratory of Advanced Technology for Drug Preparation, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
| | - Hai-Wei Xu
- Key Laboratory of Advanced Technology for Drug Preparation, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
| | - Cheng-Yun Jin
- Key Laboratory of Advanced Technology for Drug Preparation, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China.,State Key Laboratory of Esophageal Cancer Prevention & Treatment, Zhengzhou University, Zhengzhou, China
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Tu LR, Li W, Liu J, Song XG, Xu HW. LncRNA LINC00847 contributes to hepatocellular carcinoma progression by acting as a sponge of miR-99a to induce E2F2 expression. J BIOL REG HOMEOS AG 2021; 34:2195-2203. [PMID: 33426857 DOI: 10.23812/20-427-l] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- L R Tu
- Department of Infectious Diseases, Jinan Infectious Diseases Hospital affiliated to Shandong University, Jinan, Shandong, China
| | - W Li
- The First College of Clinical Medical Science, China Three Gorges University/ Yichang Central People's Hospital, Yichang, Hubei, China
| | - J Liu
- Department of Infectious Diseases, Jinan Infectious Diseases Hospital affiliated to Shandong University, Jinan, Shandong, China
| | - X G Song
- Department of Infectious Diseases, Jinan Infectious Diseases Hospital affiliated to Shandong University, Jinan, Shandong, China
| | - H W Xu
- Department of Gastroenterology, Shandong Provincial Hospital affiliated to Shandong University, Jinan, Shandong, China
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Xu HW, Jia S, Liu M, Li X, Meng X, Wu X, Yu L, Wang M, Jin CY. A low toxic CRM1 degrader: Synthesis and anti-proliferation on MGC803 and HGC27. Eur J Med Chem 2020; 206:112708. [PMID: 32810752 DOI: 10.1016/j.ejmech.2020.112708] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 05/03/2020] [Revised: 07/12/2020] [Accepted: 07/28/2020] [Indexed: 12/11/2022]
Abstract
Chromosome region maintenance 1 (CRM1) is the sole nuclear exporter of several tumor suppressor, a growth regulatory protein as an attractive cancer drug target. In the present work, a novel CRM1 degrader was discovered from newly synthesized α, β-unsaturated-δ-lactone based on a natural product Goniothalamin. It induces apoptosis of both MGC803 and HGC27 cell lines via degrading CRM1. Selective inhibition was observed for the proliferation of gastric cancer cell lines MGC803, HGC27 comparing to Human Gastric Mucosal Epithelial Cell Line (GES1). For the first time, CRM1 inhibitor or degrader inducing apoptosis in gastric carcinoma was investigated.
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Affiliation(s)
- Hai-Wei Xu
- Key Laboratory of Advanced Technology for Drug Preparation, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, China; Collaborative Innovation Center of New Drug Research and Safety Evaluation, Henan Province, Zhengzhou University, No. 100, KeXueDaDao, Zhengzhou, 450001, China.
| | - Shilong Jia
- Key Laboratory of Advanced Technology for Drug Preparation, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, China
| | - Mengbo Liu
- Key Laboratory of Advanced Technology for Drug Preparation, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, China
| | - Xiaobo Li
- Key Laboratory of Advanced Technology for Drug Preparation, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, China
| | - Xia Meng
- Key Laboratory of Advanced Technology for Drug Preparation, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, China
| | - Xinxin Wu
- Key Laboratory of Advanced Technology for Drug Preparation, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, China
| | - Lu Yu
- Key Laboratory of Advanced Technology for Drug Preparation, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, China
| | - Menglin Wang
- Key Laboratory of Advanced Technology for Drug Preparation, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, China
| | - Cheng-Yun Jin
- Key Laboratory of Advanced Technology for Drug Preparation, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, China; Collaborative Innovation Center of New Drug Research and Safety Evaluation, Henan Province, Zhengzhou University, No. 100, KeXueDaDao, Zhengzhou, 450001, China; State Key Laboratory of Esophageal Cancer Prevention & Treatment, Zhengzhou University, Zhengzhou, Henan Province, 450052, PR China.
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12
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Li JW, Li YJ, Hu XS, Gong Y, Xu BB, Xu HW, Yin ZQ. Biosafety of a 3D-printed intraocular lens made of a poly(acrylamide-co-sodium acrylate) hydrogel in vitro and in vivo. Int J Ophthalmol 2020; 13:1521-1530. [PMID: 33078100 DOI: 10.18240/ijo.2020.10.03] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Accepted: 07/10/2020] [Indexed: 12/26/2022] Open
Abstract
AIM To assess the biosafety of a poly(acrylamide-co-sodium acrylate) hydrogel (PAH) as a 3D-printed intraocular lens (IOL) material. METHODS The biosafety of PAH was first evaluated in vitro using human lens epithelial cells (LECs) and the ARPE19 cell line, and a cell counting kit-8 (CCK-8) assay was performed to investigate alterations in cell proliferation. A thin film of PAH and a conventional IOL were intraocularly implanted into the eyes of New Zealand white rabbits respectively, and a sham surgery served as control group. The anterior segment photographs, intraocular pressure (IOP), blood parameters and electroretinograms (ERG) were recorded. Inflammatory cytokines in the aqueous humor, such as TNFα and IL-8, were examined by ELISA. Cell apoptosis of the retina was investigated by TUNEL assay, and macroPAHge activation was detected by immunostaining. RESULTS PAH did not slow cell proliferation when cocultured with human LECs or ARPE19 cells. The implantation of a thin film of a 3D-printed IOL composed of PAH did not affect the IOP, blood parameters, ERG or optical structure in any of the three experimental groups (n=3 for each). Both TNFα and IL-8 in the aqueous humor of PAH group were transiently elevated 1wk post-operation and recovered to normal levels at 1 and 3mo post-operation. Iba1+ macroPAHges in the anterior chamber angle in PAH group were increased markedly compared to those of the control group; however, there was no significant difference compared to those in the IOL group. CONCLUSION PAH is a safe material for 3D printing of personal IOLs that hold great potential for future clinical applications.
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Affiliation(s)
- Jia-Wen Li
- Southwest Hospital/Southwest Eye Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China.,Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing 400038, China
| | - Yi-Jian Li
- Southwest Hospital/Southwest Eye Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China.,Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing 400038, China
| | - Xi-Su Hu
- Southwest Hospital/Southwest Eye Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China.,Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing 400038, China
| | - Yu Gong
- Southwest Hospital/Southwest Eye Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China.,Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing 400038, China
| | - Ben-Bin Xu
- Smart Materials and Surfaces Lab, Faculty of Engineering and Environment, Northumbria University, Newcastle upon Tyne NE1 8ST, UK
| | - Hai-Wei Xu
- Southwest Hospital/Southwest Eye Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China.,Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing 400038, China
| | - Zheng-Qin Yin
- Southwest Hospital/Southwest Eye Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China.,Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing 400038, China
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13
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Li QY, Zou T, Gong Y, Chen SY, Zeng YX, Gao LX, Weng CH, Xu HW, Yin ZQ. Functional assessment of cryopreserved clinical grade hESC-RPE cells as a qualified cell source for stem cell therapy of retinal degenerative diseases. Exp Eye Res 2020; 202:108305. [PMID: 33080300 DOI: 10.1016/j.exer.2020.108305] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 09/29/2020] [Accepted: 10/13/2020] [Indexed: 01/04/2023]
Abstract
The biosafety and efficiency of transplanting retinal pigment epithelial (RPE) cells derived from both human embryonic stem cells (hESCs) and induced pluripotent stem cells (iPSCs) have been evaluated in phase I and phase II clinical trials. For further large-scale application, cryopreserved RPE cells must be used; thus, it is highly important to investigate the influence of cryopreservation and thawing on the biological characteristics of hESC-RPE cells and their post-transplantation vision-restoring function. Here, via immunofluorescence, qPCR, transmission electron microscopy, transepithelial electrical resistance, and enzyme-linked immunosorbent assays (ELISAs), we showed that cryopreserved hESC-RPE cells retained the specific gene expression profile, morphology, ultrastructure, and maturity-related functions of induced RPE cells. Additionally, cryopreserved hESC-RPE cells exhibited a polarized monolayer, tight junction, and gap junction structure and an in vitro nanoparticle phagocytosis capability similar to those of induced hESC-RPE cells. However, the level of pigment epithelium-derived factor (PEDF) secretion was significantly decreased in cryopreserved hESC-RPE cells. Royal College of Surgeons rats with cryopreserved hESC-RPE cells engrafted into the subretinal space exhibited a significant decrease in the b-wave amplitude compared with rats engrafted with induced hESC-RPE cells at 4 weeks post transplantation. However, the difference disappeared at 8 weeks and 12 weeks post operation. No significant difference in the outer nuclear layer (ONL) thickness was observed between the two groups. Our data showed that even after cryopreservation and thawing, cryopreserved hESC-RPE cells are still qualified as a donor cell source for cell-based therapy of retinal degenerative diseases.
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Affiliation(s)
- Qi-You Li
- Southwest Hospital/ Southwest Eye Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, PR China; Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, 400038, PR China
| | - Ting Zou
- Southwest Hospital/ Southwest Eye Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, PR China; Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, 400038, PR China
| | - Yu Gong
- Southwest Hospital/ Southwest Eye Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, PR China; Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, 400038, PR China
| | - Si-Yu Chen
- Southwest Hospital/ Southwest Eye Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, PR China; Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, 400038, PR China
| | - Yu-Xiao Zeng
- Southwest Hospital/ Southwest Eye Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, PR China; Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, 400038, PR China
| | - Li-Xiong Gao
- Southwest Hospital/ Southwest Eye Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, PR China; Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, 400038, PR China; Department of Ophthalmology, The 6th Medical Center of PLA General Hospital, Beijing, China
| | - Chuan-Huang Weng
- Southwest Hospital/ Southwest Eye Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, PR China; Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, 400038, PR China
| | - Hai-Wei Xu
- Southwest Hospital/ Southwest Eye Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, PR China; Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, 400038, PR China.
| | - Zheng-Qin Yin
- Southwest Hospital/ Southwest Eye Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, PR China; Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, 400038, PR China.
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Wan BB, Hu LN, Xu HW. [Internal carotid aneurysm with sore throat as the first symptom: a case report]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2020; 55:266-267. [PMID: 32268698 DOI: 10.3760/cma.j.issn.1673-0860.2020.03.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- B B Wan
- Department of Otorhinolaryngology Head and Neck Surgery, Lishui Municipal Central Hospital, Lishui 323000, Zhejiang Province, China
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15
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Liu HM, Suo FZ, Li XB, You YH, Lv CT, Zheng CX, Zhang GC, Liu YJ, Kang WT, Zheng YC, Xu HW. Discovery and synthesis of novel indole derivatives-containing 3-methylenedihydrofuran-2(3H)-one as irreversible LSD1 inhibitors. Eur J Med Chem 2019; 175:357-372. [PMID: 31096156 DOI: 10.1016/j.ejmech.2019.04.065] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [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: 02/07/2019] [Revised: 04/24/2019] [Accepted: 04/25/2019] [Indexed: 02/07/2023]
Abstract
Lysine-specific demethylase 1 (LSD1), demethylase against mono- and di - methylated histone3 lysine 4, has emerged as a promising target in oncology. More specifically, it has been demonstrated as a key promoter in acute myeloid leukemia (AML), and several LSD1 inhibitors have already entered into clinical trials for the treatment of AML. In this paper, a series of new indole derivatives were designed and synthesized based on a lead compound obtained by a high-throughput screening with our in-house compound library. Among the synthetic compounds, 9e was characterized as a potent LSD1 inhibitor with an IC50 of 1.230 μM and can inhibit the proliferation of THP-1 cells effectively. And most importantly, this is the first irreversible LSD1 inhibitor that is not derived from monoamine oxidase inhibitors. Hence, the discovery of 9e may serve as a proof of concept work for AML treatment.
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Affiliation(s)
- Hong-Min Liu
- Key Laboratory of Advanced Pharmaceutical Technology, Ministry of Education of China, Co-innovation Center of Henan Province for New Drug R & D and Preclinical Safety, School of Pharmaceutical Science, Institute of Drug Discovery and Development, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan, 450001, China
| | - Feng-Zhi Suo
- Key Laboratory of Advanced Pharmaceutical Technology, Ministry of Education of China, Co-innovation Center of Henan Province for New Drug R & D and Preclinical Safety, School of Pharmaceutical Science, Institute of Drug Discovery and Development, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan, 450001, China
| | - Xiao-Bo Li
- Key Laboratory of Advanced Pharmaceutical Technology, Ministry of Education of China, Co-innovation Center of Henan Province for New Drug R & D and Preclinical Safety, School of Pharmaceutical Science, Institute of Drug Discovery and Development, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan, 450001, China
| | - Ying-Hua You
- Key Laboratory of Advanced Pharmaceutical Technology, Ministry of Education of China, Co-innovation Center of Henan Province for New Drug R & D and Preclinical Safety, School of Pharmaceutical Science, Institute of Drug Discovery and Development, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan, 450001, China
| | - Chun-Tao Lv
- Key Laboratory of Advanced Pharmaceutical Technology, Ministry of Education of China, Co-innovation Center of Henan Province for New Drug R & D and Preclinical Safety, School of Pharmaceutical Science, Institute of Drug Discovery and Development, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan, 450001, China
| | - Chen-Xing Zheng
- Key Laboratory of Advanced Pharmaceutical Technology, Ministry of Education of China, Co-innovation Center of Henan Province for New Drug R & D and Preclinical Safety, School of Pharmaceutical Science, Institute of Drug Discovery and Development, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan, 450001, China
| | - Guo-Chen Zhang
- Key Laboratory of Advanced Pharmaceutical Technology, Ministry of Education of China, Co-innovation Center of Henan Province for New Drug R & D and Preclinical Safety, School of Pharmaceutical Science, Institute of Drug Discovery and Development, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan, 450001, China
| | - Yue-Jiao Liu
- Key Laboratory of Advanced Pharmaceutical Technology, Ministry of Education of China, Co-innovation Center of Henan Province for New Drug R & D and Preclinical Safety, School of Pharmaceutical Science, Institute of Drug Discovery and Development, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan, 450001, China
| | - Wen-Ting Kang
- Key Laboratory of Advanced Pharmaceutical Technology, Ministry of Education of China, Co-innovation Center of Henan Province for New Drug R & D and Preclinical Safety, School of Pharmaceutical Science, Institute of Drug Discovery and Development, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan, 450001, China
| | - Yi-Chao Zheng
- Key Laboratory of Advanced Pharmaceutical Technology, Ministry of Education of China, Co-innovation Center of Henan Province for New Drug R & D and Preclinical Safety, School of Pharmaceutical Science, Institute of Drug Discovery and Development, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan, 450001, China; National Center for International Research of Micro-nano Molding Technology of Henan Province, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan, 450001, China.
| | - Hai-Wei Xu
- Key Laboratory of Advanced Pharmaceutical Technology, Ministry of Education of China, Co-innovation Center of Henan Province for New Drug R & D and Preclinical Safety, School of Pharmaceutical Science, Institute of Drug Discovery and Development, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan, 450001, China.
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Zhang KH, Zhang WH, Xu BS, Dong XM, Guo L, Du LL, Xu HW. CT-based Morphometric Analysis of Approach of Percutaneous Transforaminal Endoscopic Lumbar Interbody Fusion. Orthop Surg 2019; 11:212-220. [PMID: 30895721 PMCID: PMC6594482 DOI: 10.1111/os.12434] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 01/21/2019] [Accepted: 01/21/2019] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVES A radiographic study was designed to measure the relationship of the exiting nerve root and its surroundings to the corresponding intervertebral disc for percutaneous transforaminal endoscopic lumbar interbody fusion to better understand the regional anatomy and to improve clinical applications. METHODS A retrospective study from January 2017 to October 2017 was conducted at Tianjin Hospital. CT images were obtained from patients presenting low back pain (110 patients), and analysis was performed bilaterally from L2-3 to L5 S1 . In the rotating coronal plane we analyzed: the nerve root-dural sac distance at the superior and inferior margins of the disc (Js, Ji); the nerve root-pedicle distance at the medial, middle, and lateral borders of the pedicle (Pa, Pb, Pc); the pedicle width (W); and the safe working zone, defined as a trapezoid bounded by the inferior pedicle and the exiting nerve root (S). In the transverse plane, the nerve root-articular process and the shortest distance for the nerve root-articular process joint surface were analyzed at the superior and inferior margins of the disc (Gs, Gi), respectively. The groups were analyzed using ANOVA, and paired t-tests were used to compare the left and right sides. RESULTS From L2-3 to L5 S1 , the distance of the nerve root to the dural sac was larger at the inferior margin of the disc. From L2-3 to L5 S1 , each segment of the vertebral nerve root-pedicle distance gradually decreased from medial to lateral. From L2-3 to L5 S1 , the distance from the exiting nerve root to the middle and lateral margins of the pedicle gradually decreased, with L5 S1 being the minimum. Some significant differences were observed between the left and right sides for L4-5 and L5 S1 . The pedicle width of the vertebral body and the mean area for the safe working zone gradually increased from L2-3 to L5 S1 . In the axial plane, the shortest distance between the nerve root and articular process joint surface at the inferior margin of the disc was greater than the distance for the nerve root to the articular process at the superior margin of the disc from L2-3 to L5 S1 . There were no significant differences between the two sides. CONCLUSIONS It is more difficult to implant a cage with a width of 10 mm above the L3-4 level. By removing part of the superior articular process, the safe working area can be expanded, and damage to the nerve or other structures can be avoided when implanting a cage.
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Affiliation(s)
- Kai-Hui Zhang
- Graduate School of Tianjin Medical University, Tianjin, China
| | - Wei-Hao Zhang
- Graduate School of Tianjin Medical University, Tianjin, China
| | - Bao-Shan Xu
- Department of Minimally Invasive Spine Surgery, Tianjin Hospital, Tianjin, China
| | - Xiao-Man Dong
- Department of Radiology, Tianjin Hospital, Tianjin, China
| | - Lin Guo
- Department of Radiology, Tianjin Hospital, Tianjin, China
| | - Li-Long Du
- Department of Minimally Invasive Spine Surgery, Tianjin Hospital, Tianjin, China
| | - Hai-Wei Xu
- Department of Minimally Invasive Spine Surgery, Tianjin Hospital, Tianjin, China
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Xu BS, Xu HW, Yuan QM, Liu Y, Yang Q, Jiang HF, Wang DB, Ji N, Ma XL, Zhang Y. Thoracic Endoscopic-Assisted Mini-Open Surgery for Thoracic and Thoracolumbar Spinal Cord Compression. Orthop Surg 2017; 8:523-526. [PMID: 28032702 DOI: 10.1111/os.12281] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Accepted: 04/04/2016] [Indexed: 11/29/2022] Open
Abstract
Intervertebral disc herniation is a common cause of spinal cord compression, especially for the thoracic and thoracolumbar spinal cord, which has limited buffer space in the spinal canal. Spinal cord compression usually causes decreased sensation and paralysis of limbs below the level of compression, urinary and fecal incontinence, and/or urinary retention, which brings great suffering to the patients and usually requires surgical intervention. Thoracotomy or abdominothoracic surgery is usually performed for the thoracolumbar cord compression caused by hard intervertebral disc herniation. However, there is high risk of trauma and complications with this surgery. To reduce the surgical trauma and obtain good visibility, we designed athoracic endoscopic-assisted mini-open surgery for thoracic and thoracolumbar disc herniation, and performed this procedure on 10 patients who suffered from hard thoracic or thoracolumbar spinal cord compression. During the procedure, the thoracic endoscopy provided clear vision of the surgical field with a good light source. The compression could be fully exposed and completely removed, and no nerve root injury or spinal cord damage occurred. All patients achieved obvious recovery of neurological function after this procedure. This technique possesses the merits of minimal trauma, increased safety, and good clinical results. The aim of this study is to introduce this thoracic endoscopic-assisted mini-open surgery technique, and we believe that this technique will be a good choice for the thoracic and thoracolumbar cord compression caused by hard intervertebral disc herniation.
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Affiliation(s)
- Bao-Shan Xu
- Department of Minimally Invasive Spine Surgery, Tianjin Hospital, Tianjin, China
| | - Hai-Wei Xu
- Department of Minimally Invasive Spine Surgery, Tianjin Hospital, Tianjin, China
| | - Qiu-Ming Yuan
- Department of Minimally Invasive Spine Surgery, Tianjin Hospital, Tianjin, China
| | - Yue Liu
- Department of Minimally Invasive Spine Surgery, Tianjin Hospital, Tianjin, China
| | - Qiang Yang
- Department of Minimally Invasive Spine Surgery, Tianjin Hospital, Tianjin, China
| | - Hong-Feng Jiang
- Department of Minimally Invasive Spine Surgery, Tianjin Hospital, Tianjin, China
| | - Dong-Bin Wang
- Department of Thoracic Surgery, Tianjin Hospital, Tianjin, China
| | - Ning Ji
- Department of Minimally Invasive Spine Surgery, Tianjin Hospital, Tianjin, China
| | - Xin-Long Ma
- Department of Minimally Invasive Spine Surgery, Tianjin Hospital, Tianjin, China
| | - Yang Zhang
- Cell Engineering Laboratory of Orthopaedic Institute, Tianjin Hospital, Tianjin, China
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Shao WY, Liu X, Gu XL, Ying X, Wu N, Xu HW, Wang Y. Promotion of axon regeneration and inhibition of astrocyte activation by alpha A-crystallin on crushed optic nerve. Int J Ophthalmol 2016; 9:955-66. [PMID: 27500100 DOI: 10.18240/ijo.2016.07.04] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2016] [Accepted: 05/25/2016] [Indexed: 11/23/2022] Open
Abstract
AIM To explore the effects of αA-crystallin in astrocyte gliosis after optic nerve crush (ONC) and the mechanism of α-crystallin in neuroprotection and axon regeneration. METHODS ONC was established on the Sprague-Dawley rat model and αA-crystallin (10(-4) g/L, 4 µL) was intravitreously injected into the rat model. Flash-visual evoked potential (F-VEP) was examined 14d after ONC, and the glial fibrillary acidic protein (GFAP) levels in the retina and crush site were analyzed 1, 3, 5, 7 and 14d after ONC by immunohistochemistry (IHC) and Western blot respectively. The levels of beta Tubulin (TUJ1), growth-associated membrane phosphoprotein-43 (GAP-43), chondroitin sulfate proteoglycans (CSPGs) and neurocan were also determined by IHC 14d after ONC. RESULTS GFAP level in the retina and the optic nerve significantly increased 1d after ONC, and reached the peak level 7d post-ONC. Injection of αA-crystallin significantly decreased GFAP level in both the retina and the crush site 3d after ONC, and induced astrocytes architecture remodeling at the crush site. Quantification of retinal ganglion cell (RGC) axons indicated αA-crystallin markedly promoted axon regeneration in ONC rats and enhanced the regenerated axons penetrated into the glial scar. CSPGs and neurocan expression also decreased 14d after αA-crystallin injection. The amplitude (N1-P1) and latency (P1) of F-VEP were also restored. CONCLUSION Our results suggest α-crystallin promotes the axon regeneration of RGCs and suppresses the activation of astrocytes.
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Affiliation(s)
- Wei-Yang Shao
- Southwest Hospital/Southwest Eye Hospital, Third Military Medical University, Chongqing 400038, China; Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing 400038, China
| | - Xiao Liu
- Southwest Hospital/Southwest Eye Hospital, Third Military Medical University, Chongqing 400038, China; Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing 400038, China
| | - Xian-Liang Gu
- Southwest Hospital/Southwest Eye Hospital, Third Military Medical University, Chongqing 400038, China; Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing 400038, China
| | - Xi Ying
- Southwest Hospital/Southwest Eye Hospital, Third Military Medical University, Chongqing 400038, China; Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing 400038, China
| | - Nan Wu
- Southwest Hospital/Southwest Eye Hospital, Third Military Medical University, Chongqing 400038, China; Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing 400038, China
| | - Hai-Wei Xu
- Southwest Hospital/Southwest Eye Hospital, Third Military Medical University, Chongqing 400038, China; Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing 400038, China
| | - Yi Wang
- Southwest Hospital/Southwest Eye Hospital, Third Military Medical University, Chongqing 400038, China; Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing 400038, China
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Xu BS, Liu Y, Xu HW, Yang Q, Ma XL, Hu YC. Intervertebral Fusion with Mobile Microendoscopic Discectomy for Lumbar Degenerative Disc Disease. Orthop Surg 2016; 8:241-5. [PMID: 27384734 DOI: 10.1111/os.12235] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2015] [Accepted: 11/13/2015] [Indexed: 11/30/2022] Open
Abstract
The aim of this article is to introduce a technique for lumbar intervertebral fusion that incorporates mobile microendoscopic discectomy (MMED) for lumbar degenerative disc disease. Minimally invasive transforaminal lumbar interbody fusion is frequently performed to treat degenerative diseases of the lumbar spine; however, the scope of such surgery and vision is limited by what the naked eye can see through the expanding channel system. To expand the visual scope and reduce trauma, we perform lumbar intervertebral fusion with the aid of a MMED system that provides a wide field through freely tilting the surgical instrument and canals. We believe that this technique is a good option for treating lumbar degenerative disc disease that requires lumbar intervertebral fusion.
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Affiliation(s)
- Bao-Shan Xu
- Department of Minimally Invasive Spine Surgery, Tianjin Hospital, Tianjin, China
| | - Yue Liu
- Department of Minimally Invasive Spine Surgery, Tianjin Hospital, Tianjin, China
| | - Hai-Wei Xu
- Department of Minimally Invasive Spine Surgery, Tianjin Hospital, Tianjin, China
| | - Qiang Yang
- Department of Minimally Invasive Spine Surgery, Tianjin Hospital, Tianjin, China
| | - Xin-Long Ma
- Department of Minimally Invasive Spine Surgery, Tianjin Hospital, Tianjin, China
| | - Yong-Cheng Hu
- Orthopaedic Oncology, Tianjin Hospital, Tianjin, China
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Xu H. Editorial (Thematic Issue: Medicinal Chemistry of Hepatitis C Virus: Current and Future Perspective). Curr Top Med Chem 2016; 16:1350. [DOI: 10.2174/156802661612160303150629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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21
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Yang Z, Hao WJ, Xu HW, Wang SL, Jiang B, Li G, Tu SJ. Base-Promoted Transannulation of Heterocyclic Enamines and 2,3-Epoxypropan-1-ones: Regio- and Stereoselective Synthesis of Fused Pyridines and Pyrroles. J Org Chem 2015; 80:2781-9. [DOI: 10.1021/acs.joc.5b00067] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zheng Yang
- School
of Chemistry and Chemical Engineering, Jiangsu Key Laboratory of Green
Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Wen-Juan Hao
- School
of Chemistry and Chemical Engineering, Jiangsu Key Laboratory of Green
Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Hai-Wei Xu
- School
of Chemistry and Chemical Engineering, Jiangsu Key Laboratory of Green
Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Shu-Liang Wang
- School
of Chemistry and Chemical Engineering, Jiangsu Key Laboratory of Green
Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Bo Jiang
- School
of Chemistry and Chemical Engineering, Jiangsu Key Laboratory of Green
Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Guigen Li
- Institute of Chemistry & Biomedical Sciences, Nanjing University, Nanjing 210093, P. R. China
- Department
of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, United States
| | - Shu-Jiang Tu
- School
of Chemistry and Chemical Engineering, Jiangsu Key Laboratory of Green
Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
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Qu LH, Jin X, Xu HW, Li SY, Yin ZQ. Detecting novel genetic mutations in Chinese Usher syndrome families using next-generation sequencing technology. Mol Genet Genomics 2014; 290:353-63. [PMID: 25252889 DOI: 10.1007/s00438-014-0915-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Accepted: 09/03/2014] [Indexed: 10/24/2022]
Abstract
Usher syndrome (USH) is the most common cause of combined blindness and deafness inherited in an autosomal recessive mode. Molecular diagnosis is of great significance in revealing the molecular pathogenesis and aiding the clinical diagnosis of this disease. However, molecular diagnosis remains a challenge due to high phenotypic and genetic heterogeneity in USH. This study explored an approach for detecting disease-causing genetic mutations in candidate genes in five index cases from unrelated USH families based on targeted next-generation sequencing (NGS) technology. Through systematic data analysis using an established bioinformatics pipeline and segregation analysis, 10 pathogenic mutations in the USH disease genes were identified in the five USH families. Six of these mutations were novel: c.4398G > A and EX38-49del in MYO7A, c.988_989delAT in USH1C, c.15104_15105delCA and c.6875_6876insG in USH2A. All novel variations segregated with the disease phenotypes in their respective families and were absent from ethnically matched control individuals. This study expanded the mutation spectrum of USH and revealed the genotype-phenotype relationships of the novel USH mutations in Chinese patients. Moreover, this study proved that targeted NGS is an accurate and effective method for detecting genetic mutations related to USH. The identification of pathogenic mutations is of great significance for elucidating the underlying pathophysiology of USH.
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Affiliation(s)
- Ling-Hui Qu
- Southwest Hospital/Southwest Eye Hospital, Third Military Medical University, Chongqing, 400038, China
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Xu HW, Qin SS, Liu HM. New synthetic antibiotics for the treatment of Enterococcus and Campylobacter infection. Curr Top Med Chem 2014; 14:21-39. [PMID: 24236728 DOI: 10.2174/1568026613666131113145544] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2013] [Revised: 08/20/2013] [Accepted: 09/09/2013] [Indexed: 11/22/2022]
Abstract
Bacterial resistance to antibiotics, particularly to multiple drug resistant antibiotics, is becoming cause for significant concern. The only really viable course of action is to discover new antibiotics with novel mode of actions. This review focuses on antibiotic resistance mechanisms of Enterococcus and Campylobacter, and new antibacterial agents against Enterococcus and Campylobacter through de novo or semi- synthesis in the period from 2003 until mid- 2013.
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Affiliation(s)
| | | | - Hong-Min Liu
- New Drug Research & Development Center, School of Pharmaceutical Sciences, Zhengzhou University, No. 100, KeXue DaDao, Zhengzhou 450001, China.
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Hu MH, Zheng QF, Jia XZ, Li Y, Dong YC, Wang CY, Lin QY, Zhang FY, Zhao RB, Xu HW, Zhou JH, Yuan HP, Zhang WH, Ren H. Neuroprotection effect of interleukin (IL)-17 secreted by reactive astrocytes is emerged from a high-level IL-17-containing environment during acute neuroinflammation. Clin Exp Immunol 2014; 175:268-84. [PMID: 24117055 DOI: 10.1111/cei.12219] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/04/2013] [Indexed: 01/24/2023] Open
Abstract
An increase in interleukin (IL)-17A-producing cells, particularly at sites of tissue inflammation, is observed frequently, yet the mechanism is not fully understood. This study aims to dissect the role of IL-17 in autoimmunity-mediated neuroinflammation. The cytokine milieu containing elevated IL-17, which often appears in active states of autoimmunity, was mimicked in vitro by a supernatant obtained from rat peripheral blood monocytes stimulated with phorbol mystistate acetate (PMA)/ionomycin. The application of such inflammatory media on only primary cultured cerebellar granule neurones resulted in significant apoptosis, but the presence of astrocytes largely prevented the effect. The supernatants of the stimulated astrocytes, especially those that contained the highest level of IL-17, achieved the best protection, and this effect could be blocked by anti-IL-17 antibodies. Protein IL-17 inhibited intracellular calcium increase and protected the neurones under inflammatory attack from apoptosis. IL-17, but not interferon (IFN)-γ, in the inflammatory media contributed to astrocyte secretion of IL-17, which depended on the Janus kinase/signal transducers and activators of transcription (JAK/STAT) pathway activation. The astrocytes that were treated with IL-17 alone or with prolonged treatment of the inflammatory media failed to produce sufficient levels of IL-17. Moreover, confirmatory data were obtained in vivo in a monophasic experimental autoimmune uveitis (EAU) in Lewis rats; in this preparation, the high-level IL-17-containing the cytokine milieu was demonstrated, along with IL-17 secretion by the resident neural cells. The antagonism of IL-17 at a late stage disturbed the disease resolution and resulted in significant neural apoptosis. Our data show a dynamic role of IL-17 in the maintenance of homeostasis and neuroprotection in active neuroinflammation.
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Affiliation(s)
- M H Hu
- Department of Immunology, Harbin Medical University, Harbin, China; Infection and Immunity, Key Laboratory of Heilongjiang Province, Harbin, China
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Tu MS, Xu HW, Fan W, Jiang B, Tu SJ. [4 + 2] Heterocyclization for Efficient Formation of Substituted Quinoxalines through Carbon-Oxygen Bonds Cleavage. J Heterocycl Chem 2014. [DOI: 10.1002/jhet.2128] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Man-Su Tu
- Key Laboratory of Biotechnology for Medicinal Plant, and School of Chemistry & Chemical Engineering; Jiangsu Normal University; Xuzhou 211116 People's Republic of China
| | - Hai-Wei Xu
- Key Laboratory of Biotechnology for Medicinal Plant, and School of Chemistry & Chemical Engineering; Jiangsu Normal University; Xuzhou 211116 People's Republic of China
| | - Wei Fan
- Key Laboratory of Biotechnology for Medicinal Plant, and School of Chemistry & Chemical Engineering; Jiangsu Normal University; Xuzhou 211116 People's Republic of China
| | - Bo Jiang
- Key Laboratory of Biotechnology for Medicinal Plant, and School of Chemistry & Chemical Engineering; Jiangsu Normal University; Xuzhou 211116 People's Republic of China
| | - Shu-Jiang Tu
- Key Laboratory of Biotechnology for Medicinal Plant, and School of Chemistry & Chemical Engineering; Jiangsu Normal University; Xuzhou 211116 People's Republic of China
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Affiliation(s)
- Yan Xiang
- Department of Pharmaceutical Engineering; Jiangsu Provincial Xuzhou Pharmaceutical Vocational College; Jiangsu Xuzhou 221116 People's Republic of China
| | - Hai-Wei Xu
- School of Chemistry & Chemical Engineering; Jiangsu Normal University; Xuzhou Jiangsu 221116 People's Republic of China
| | - Wei Fan
- School of Chemistry & Chemical Engineering; Jiangsu Normal University; Xuzhou Jiangsu 221116 People's Republic of China
| | - Bo Jiang
- School of Chemistry & Chemical Engineering; Jiangsu Normal University; Xuzhou Jiangsu 221116 People's Republic of China
| | - Shu-Jiang Tu
- School of Chemistry & Chemical Engineering; Jiangsu Normal University; Xuzhou Jiangsu 221116 People's Republic of China
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Jiang B, Tu SJ, Xu HW, Ma GH. A New [2+2+1] Heterocyclization for the Synthesis of 2,3,5-Trisubstituted Thiophenes under Microwave Irradiation. SYNTHESIS-STUTTGART 2013. [DOI: 10.1055/s-0033-1339917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Liu GZ, Xu HW, Wang P, Lin ZT, Duan YC, Zheng JX, Liu HM. Stereoselective synthesis and anti-proliferative effects on prostate cancer evaluation of 5-substituted-3,4-diphenylfuran-2-ones. Eur J Med Chem 2013; 65:323-36. [DOI: 10.1016/j.ejmech.2013.04.062] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2013] [Revised: 04/10/2013] [Accepted: 04/28/2013] [Indexed: 11/30/2022]
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Zhang XH, Pang YZ, Zhao SJ, Xu HW, Li YL, Xu Y, Guo Z, Wang DD. The relationship of plumage colours with MC1R (Melanocortin 1 Receptor) and ASIP (Agouti Signaling Protein) in Japanese quail (Coturnix coturnix japonica). Br Poult Sci 2013; 54:306-11. [PMID: 23639082 DOI: 10.1080/00071668.2013.780122] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
1. The relationship of polymorphisms in the Melanocortin 1 Receptor (MC1R) and Agouti Signalling Protein (ASIP) genes with plumage colour in Japanese quail was investigated by cloning and sequencing the entire coding regions from black, white and maroon Japanese quail embryos at 12 d of incubation. 2. Three SNPs were identified in the MC1R coding region by multiple alignment of sequences from individuals with different plumage colours. A missense C/T mutation located at 169 bp within the Open Reading Frame caused a Ile57Val mutation in the amino acid sequence, and had a significant relationship with the black colour. 3. The expression of MC1R was higher in black plumage quails than that in maroon plumage quails, whereas the expression of ASIP was higher in maroon plumage quails than that in black plumage quails. 4. It is concluded that the black plumage colour in Japanese quails may be caused by either increased production of MC1R or decreased production of ASIP.
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Affiliation(s)
- X H Zhang
- College of Animal Science, Henan University of Science and Technology, Luoyang, He'nan, P.R. China
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Liu H, Gao PF, Xu HW, Liu MM, Yu T, Yao JP, Yin ZQ. Perineuronal nets increase inhibitory GABAergic currents during the critical period in rats. Int J Ophthalmol 2013; 6:120-5. [PMID: 23638408 DOI: 10.3980/j.issn.2222-3959.2013.02.02] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2012] [Accepted: 03/10/2013] [Indexed: 11/02/2022] Open
Abstract
AIM To investigate inhibitory γ-aminobutyric acid (GABA) ergic postsynaptic currents (IPSCs) and postsynaptic currents (PSCs) in layer IV of the rat visual cortex during the critical period and when plasticity was extended through dissolution of the perineuronal nets (PNNs). METHODS We employed 24 normal Long-Evans rats to study GABAA-PSC characteristics of neurons within layer IV of the visual cortex during development. The animals were divided into six groups of four rats according to ages at recording: PW3 (P21-23d), PW4 (P28-30d), PW5 (P35-37d), PW6 (P42-44d), PW7 (P49-51d), and PW8 (56-58d). An additional 24 chondroitin sulfate proteoglycan (CSPG) degradation rats (also Long-Evans) were generated by making a pattern of injections of chondroitinase ABC (chABC) into the visual cortex 1 week prior to recording at PW3, PW4, PW5, PW6, PW7, and PW8. Immunohistochemistry was used to identify the effect of chABC injection on CSPGs. PSCs were detected with whole-cell patch recordings, and GABAA receptor-mediated IPSCs were pharmacologically isolated. RESULTS IPSC peak current showed a strong rise in the age-matched control group, peaked at PW5 and were maintained at a roughly constant value thereafter. Although there was a small increase in peak current for the chABC group with age, the peak currents continued to decrease with the delayed highest value at PW6, resulting in significantly different week-by-week comparison with normal development. IPSC decay time continued to increase until PW7 in the control group, while those in the chABC group were maintained at a stable level after an initial increase at PW4. Compared with normal rats, the decay times recorded in the chABC rats were always shorter, which differed significantly at each age. We did not observe any differences in IPSC properties between the age-matched control and penicillinase (P-ase) group. However, the change in IPSCs after chABC treatment was not reflected in the total PSCs or in basic membrane properties in layer IV of the rat visual cortex. CONCLUSION Our results demonstrate that rather than rapidly increasing during the critical period for neuronal plasticity, IPSCs in layer IV of rat visual cortex are maintained at an immature level when PNNs are removed by chABC. This suggests that GABA receptor maturation involves the conformation of the CSPGs in PNNs.
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Affiliation(s)
- Hui Liu
- Southwest Eye Hospital, Southwest Hospital, Third Military Medical University, Chongqing 400038, China ; Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing 400038, China
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Fan W, Ye Q, Xu HW, Jiang B, Wang SL, Tu SJ. Novel double [3 + 2 + 1] heteroannulation for forming unprecedented dipyrazolo-fused 2,6-naphthyridines. Org Lett 2013; 15:2258-61. [PMID: 23597067 DOI: 10.1021/ol4008266] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [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
A novel four-component strategy for the efficient synthesis of unprecedented dipyrazolo-fused 2,6-naphthyridines through a double [3 + 2+1] heteroannulation has been described. The bond-forming efficiency, accessibility, and generality of this synthesis make it highly valuable to assemble tetra-heterocyclic scaffolds.
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Affiliation(s)
- Wei Fan
- School of Chemistry and Chemical Engineering, and Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou, 221116 Jiangsu, PR China
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Jiang B, Wang X, Xu HW, Tu MS, Tu SJ, Li G. Highly selective domino multicyclizations for forming polycyclic fused acridines and azaheterocyclic skeletons. Org Lett 2013; 15:1540-3. [PMID: 23506186 PMCID: PMC3635953 DOI: 10.1021/ol400322v] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Highly selective four-component domino multicyclizations for the synthesis of new fused acridines and azaheterocyclic skeletons have been established by mixing common reactants in isobutyric acid under microwave irradiation. The reactions proceeded at fast rates and were conducted to completion within 20-30 min. Up to seven new chemical bonds, four rings, and four stereocenters were assembled in a convenient one-pot operation. The resulting hexacyclic and pentacyclic fused acridines and their stereochemistry have been fully characterized and determined by X-ray structural analysis.
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Affiliation(s)
- Bo Jiang
- School of Chemistry and Chemical Engineering, and Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou, 221116, Jiangsu, P. R. China
| | - Xue Wang
- School of Chemistry and Chemical Engineering, and Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou, 221116, Jiangsu, P. R. China
| | - Hai-Wei Xu
- School of Chemistry and Chemical Engineering, and Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou, 221116, Jiangsu, P. R. China
| | - Man-Su Tu
- School of Chemistry and Chemical Engineering, and Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou, 221116, Jiangsu, P. R. China
| | - Shu-Jiang Tu
- School of Chemistry and Chemical Engineering, and Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou, 221116, Jiangsu, P. R. China
| | - Guigen Li
- Institute of Chemistry & BioMedical Sciences (ICBMS), Nanjing University, Nanjing 210093, P. R. China
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX 79409-1061, USA
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Li Y, Fan W, Xu HW, Jiang B, Wang SL, Tu SJ. A novel three-component [5 + 1] heterocyclization leading to 2-azafluorenone synthesis and its polyfunctionalizations. Org Biomol Chem 2013; 11:2417-20. [DOI: 10.1039/c3ob40371h] [Citation(s) in RCA: 17] [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] [Indexed: 11/21/2022]
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Xu HW, Fan W, Li MY, Jiang B, Wang SL, Tu SJ. A novel domino strategy for forming poly-substituted quaternary imidazoles through a Cs2CO3-promoted aryl migration process. Org Biomol Chem 2013; 11:3603-7. [DOI: 10.1039/c3ob40666k] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Jiang B, Wang X, Li MY, Wu Q, Ye Q, Xu HW, Tu SJ. A domino synthetic strategy leading to two-carbon-tethered fused acridine/indole pairs and fused acridine derivatives. Org Biomol Chem 2012; 10:8533-8. [DOI: 10.1039/c2ob26315g] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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Dai GF, Zhao J, Jiang ZW, Zhu LP, Xu HW, Ma WY, Chen XR, Dong RJ, Li WY, Liu HM. Anti-inflammatory effect of novel andrographolide derivatives through inhibition of NO and PGE2 production. Int Immunopharmacol 2011; 11:2144-9. [PMID: 21983643 DOI: 10.1016/j.intimp.2011.09.010] [Citation(s) in RCA: 31] [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: 01/24/2011] [Revised: 09/21/2011] [Accepted: 09/22/2011] [Indexed: 12/29/2022]
Abstract
Andrographolide (1) is a major diterpene lactone exhibiting anti-inflammatory effects and is found in the plant Andrographis paniculata (Burm. f) Nees, which is widely used in Traditional Chinese Medicine. Synthesis of more effective drugs from andrographolide is very interesting and can prove to be highly useful. In this study, we investigated the anti-inflammatory effects of andrographolide and its derivatives (compounds 2-6) through dimethylbenzene-induced ear edema in mice. Substances under study were administrated intragastrically and the structure-activity relationship was analyzed. Results showed that compounds 5 and 6 significantly inhibited ear edema compared with compound 1 (p<0.05), indicating that the introduction of p-Chlorobenzylidene to C-15 of compound 2 enhances the anti-inflammatory effect. Moreover, compound 6 exhibited the strongest anti-inflammatory effect against ear edema in mice (79.4%; 1.35 mmol/kg, ig) and paw edema in rats (50.4%; 0.90 mmol/kg, ig). In addition, compound 6 significantly (p<0.05) inhibited granuloma formation and reduced the increase in vascular permeability induced by peritoneal injection of 0.6% acetic acid solution in mice. Findings indicate that compound 6 exerts its enhanced anti-inflammatory effects by decreasing serum iNOS activity, NO production, and PGE(2) production.
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Affiliation(s)
- Gui-Fu Dai
- Department of Biotechnology, Zhengzhou University, Zhengzhou 450001, China.
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Wang XJ, Xu HW, Guo LL, Zheng JX, Xu B, Guo X, Zheng CX, Liu HM. Synthesis and in vitro antitumor activity of new butenolide-containing dithiocarbamates. Bioorg Med Chem Lett 2011; 21:3074-7. [PMID: 21486694 DOI: 10.1016/j.bmcl.2011.03.029] [Citation(s) in RCA: 44] [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] [Received: 12/23/2010] [Revised: 02/22/2011] [Accepted: 03/09/2011] [Indexed: 11/27/2022]
Abstract
Three series of butenolide-containing dithiocarbamates were designed and synthesized. Their anti-tumor activity in vitro was evaluated. Among them compound I-14 exhibited broad spectrum anti-cancer activity against five human cancer cell lines with IC(50) <30 μM. Structure-activity relationship analysis showed that the introduction of dithiocarbamate side chains on the C-3 position of butenolide was crucial for anti-tumor activity.
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Affiliation(s)
- Xiao-Juan Wang
- New Drug Research & Development Center, Zhengzhou University, Zhengzhou 450001, PR China
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Liu HM, Wang XJ, Xu HW, Guo LL, Zhang E, Chen GW, Guo X. Synthesis of Various Substituted Spiro- and Bicyclethiazolidine-2-thiones by a Multicomponent Reaction and Biological Evaluation in vitro. HETEROCYCLES 2011. [DOI: 10.3987/com-11-12147] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Abstract
BACKGROUND AND PURPOSE the association of autosomal-dominant polycystic kidney disease (ADPKD) with intracranial aneurysm (ICAN) is well known but little is known about the characteristics of ICAN in ADPKD. The purpose of this study was to investigate the prevalence and characteristics of ICAN in ADPKD. METHODS we screened 355 patients with ADPKD (mean age, 46.5 ± 13.2 years; range, 7 to 87 years) with 3-dimensional time-of-flight MR angiography. Size, location, and morphology of aneurysms were assessed. The prevalence and characteristics of ICAN in patients with ADPKD were evaluated. Patients with ICAN found by MR angiography and moderate renal function subsequently were recommended to undergo digital subtraction angiography for comparison. RESULTS the prevalence of ICAN in ADPKD was 12.4% (95% CI, 8.95% to 15.82%) with an equal gender distribution. The prevalence increased as age increased, reaching a peak value of 23.3% (95% CI, 16.85 to 29.75%) in the 60- to 69-year age group. The prevalence of ICAN in patients with ADPKD with a positive family history of hemorrhagic stroke or ICAN was higher than patients with ADPKD lacking such family history (relative risk, 1.968; 95% CI, 1.57 to 2.67). The mean diameter of ICAN was 3.85 ± 3.25 mm. The most frequent site of ICAN was the internal carotid artery. The result of digital subtraction angiography of 15 patients with 18 ICANs and moderate renal function corresponded to the detection of MR angiography. CONCLUSIONS the characteristics of ICAN in patients with ADPKD were different from some previous reports. Systematic screening of ICAN with 3-dimensional time-of-flight MR angiography is recommended for patients with ADPKD, particularly for adult patients (≧30 years) or patients with a positive family history of hemorrhagic stroke or ICAN.
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Affiliation(s)
- H W Xu
- Institute of Diagnostic and Interventional Radiology, the Shanghai Sixth People's Hospital, Shanghai Jiao Tong University, 600 Yi Shan Road, ShangHai, China
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Tang YP, Wang K, Xu HW. [Progress in the mechanisms of N-APP and death receptor-6 induced axonotmesis in Alzheimer's disease]. Sheng Li Ke Xue Jin Zhan 2010; 41:449-452. [PMID: 21416965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
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Bi YF, Xu HW, Liu XQ, Zhang XJ, Wang ZJ, Liu HM. Synthesis and vasodilative activity of tanshinone IIA derivatives. Bioorg Med Chem Lett 2010; 20:4892-4. [DOI: 10.1016/j.bmcl.2010.06.076] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2010] [Revised: 06/09/2010] [Accepted: 06/14/2010] [Indexed: 10/19/2022]
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Xu HW, Liu GZ, Zhu SL, Hong GF, Liu HM, Wu Q. Digoxin derivatives substituted by alkylidene at the butenolide part. Steroids 2010; 75:419-23. [PMID: 20171236 DOI: 10.1016/j.steroids.2010.02.007] [Citation(s) in RCA: 7] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2009] [Revised: 02/03/2010] [Accepted: 02/08/2010] [Indexed: 10/19/2022]
Abstract
A series of digoxin derivatives containing the gamma-alkylidene butenolide moiety were synthesised by way of stereoselective vinylogous aldol reaction of the unactivated butenolide in simple conditions. The structures of compounds synthesised were characterised by infrared (IR), nuclear magnetic resonance (NMR) and HR-MS. Preliminary bioassay shows that some of them have cardiac functions, especially compound 2g that induced a marked increase in myocardial contractility at 10ngml(-1) and 20ngml(-1) concentrations without digitalis toxicity.
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Affiliation(s)
- Hai-Wei Xu
- School of Pharmaceutical Science, Zhengzhou University, Ke Xue Da Dao 100, Zhengzhou 450001, PR China
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Liu GZ, Xu HW, Chen GW, Wang P, Wang YN, Liu HM, Yu DQ. Stereoselective synthesis of desloratadine derivatives as antagonist of histamine. Bioorg Med Chem 2010; 18:1626-32. [DOI: 10.1016/j.bmc.2009.12.061] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2009] [Revised: 12/25/2009] [Accepted: 12/30/2009] [Indexed: 10/20/2022]
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45
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Liang L, Yang MH, Liu ZX, Xu HW, Liu FH, He QZ, Luo YF. [Purity measurement of hybrid rice seed Yixiang 725 with visible-near infrared reflectance spectra]. Guang Pu Xue Yu Guang Pu Fen Xi 2009; 29:2962-2965. [PMID: 20101964] [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: 05/28/2023]
Abstract
A rapid and non-invasive method was put forward to measure the purity of hybrid rice seed by visible-near infrared reflectance spectra. Ninety hybrid rice seed samples (Yixiang 725) with the purity of 90%-99% were collected using a FieldSpec 3 visible-near infrared spectometer. All samples were divided randomly into two groups, one group with 75 samples used as calibrated set, and the other with 15 samples used as validated set. Based on the spectra in the range of 380-2 400 nm, the regression model was established using the PLS (partial least square), and different spectra pretreatment methods were compared. The study showed that spectra information can be extracted thoroughly by the pretreatment method of first derivative combined with standard normal variate, with the SEC (standard error of calibration) of 0.002 5, SEP (standard error of prediction) of 0.006 6, and determination coefficients of 0.988 4 (calibration set) and 0.922 7 (validation set) respectively. The spectra, which were pretreated with the method of first derivative combined standard normal variate, were analyzed by principal component analysis (PCA). The top 20 principal components, which were computed by PCA and accounted for 86.09% variation of the original spectral information, were used to build BP-ANN model for measuring the purity of hybrid rice seed as the new variables. The study showed that the SEC and SEP of BP-ANN model were 0.001 7 and 0.006 1, and the determination coefficients of that were 0.995 2 (calibration set) and 0.936 9 (validation set) respectively. Therefore, the predictive power of BP-ANN model was better than that of PLS model. Results indicated that it was feasible to measure the purity of the hybrid rice seed by visible-near reflectance spectra as a rapid and non-contact way, and PCA combined with BP-ANN was a preferred method.
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Affiliation(s)
- Liang Liang
- School of Info-Physics and Geomatics Engineering, Central South University, Changsha 410083, China.
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Yang YJ, Xu HW, Dai Q. [Progress in regulation of FoxO on cell proliferation, differentiation and apoptosis]. Sheng Li Ke Xue Jin Zhan 2008; 39:362-365. [PMID: 19119623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
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Deng QH, Xu HW, Yuen AWH, Xu ZJ, Che CM. Ruthenium-catalyzed one-pot carbenoid N-H insertion reactions and diastereoselective synthesis of prolines. Org Lett 2008; 10:1529-32. [PMID: 18351765 DOI: 10.1021/ol800087p] [Citation(s) in RCA: 90] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Aryl- and aliphatic-substituted 3-hydroxyprolines and various other amino esters are conveniently prepared by [RuCl2(p-cymene)]2-catalyzed one-pot intramolecular and intermolecular carbenoid N-H insertion reactions, respectively, and the prolines are formed with high diastereoselectivities. The catalytic reactions are tolerant toward air/moisture, and the product yields are insensitive to the organic solvents used.
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Affiliation(s)
- Qing-Hai Deng
- Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, The Chinese Academy of Sciences, 354 Feng Lin Road, Shanghai, China
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Zhang JY, Liu HM, Xu HW, Shan LH. Non-enzymatic kinetic resolution of β-amino alcohols using C-12 higher carbon sugar as a chiral auxiliary. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.tetasy.2008.01.039] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Yin JL, Xu HW, Wu JC, Hu JH, Yang GQ. Cultivar and insecticide applications affect the physiological development of the brown planthopper, Nilaparvata lugens (Stål) (Hemiptera: Delphacidae). Environ Entomol 2008; 37:206-212. [PMID: 18348812 DOI: 10.1603/0046-225x(2008)37[206:caiaat]2.0.co;2] [Citation(s) in RCA: 14] [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] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Nilaparvata lugens (Stål) (Hemiptera:Delphacidae) is a serious migratory pest of rice in Asia. Pest resurgence often occurs because of insecticide overuse. Using both susceptible (TN1) and moderately resistant (Xieyou 963) cultivars, we studied the effect of foliar insecticides on the percentage of brachypterous adults, female reproductive rate, and crude fat and soluble sugar contents in third- and fifth-instar nymphs and adults. The percentage of brachypterous adults and reproductive rate of adult females developed from nymphs that fed on insecticide-treated plants varied significantly with rice cultivar, type of insecticide, and its concentration. Feeding on susceptible plants increased the percentage of brachypterous adults and reproductive rate of adult females. Also, deltamethrin increased brachypterous production relative to imidacloprid and triazophos. The highest reproductive rate was on plants treated with triazophos. All insecticide treatments in both cultivars resulted in increase of soluble sugar contents in third- and fifth-instar nymphs and adults developed from nymphs feeding on insecticide-treated rice plants. This effect was stronger on the susceptible cultivar. Changes of crude fat content after N. lugens feeding on insecticide-treated plants were related to its feeding duration. Crude fat content in adult developed from nymphs feeding on treated plants was significantly higher that on control plants. These studies showed that plant and insecticide influences on physiological ecology of this planthopper will influence its population dynamics under commercial production of rice in Asia.
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Affiliation(s)
- Jian-Li Yin
- Department of Plant Protection, Yangzhou University, Yangzhou 225009, China
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Xu HW, Liu GZ, Dai GF, Wu CL, Liu HM. Modification of 15-akylidene andrographolide derivatives as alpha-glucosidase inhibitor. Drug Discov Ther 2007; 1:73-77. [PMID: 22504367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
15-Alkylidene andrographolide derivatives were specific alpha-glucosidase inhibitors. Semi-synthetic studies of these derivatives led to new alpha-glucosidase inhibitors. Their alpha-glucosidase inhibitory activity was evaluated. Bioactivity results indicated that most of the derivatives were excellent alpha-glucosidase inhibitors. Among them, 6c displayed the best alpha-glucosidase inhibitory bioactivity with an <span lang="EN-US">IC(50) value of 8.3 </span><span lang="EN-US" style="font-size: 10.5pt; font-family: Symbol;">m</span><span lang="EN-US">M.</span>
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Affiliation(s)
- H W Xu
- New Drug Research & Development Center, Zhengzhou University, Zhengzhou, China
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