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Liang LL, Ju S, Cui ZH. [Dislocation into the anterior chamber and spontaneous repositioning of a dexamethasone intravitreal implant: a case report]. Zhonghua Yan Ke Za Zhi 2024; 60:272-274. [PMID: 38462376 DOI: 10.3760/cma.j.cn112142-20231025-00181] [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: 03/12/2024]
Abstract
A 61-year-old male patient presented with blurred vision in the right eye for 1 day. The patient had previously undergone phacoemulsification with intraocular lens implantation (10 years ago) and intravitreal implantation of dexamethasone (due to uveitis) in the eye. There was edema in the inferior cornea, along with Descemet membrane folds. The rod-shaped dexamethasone implant was visible in the inferior anterior chamber. Without pupil dilation, the patient was asked to keep a supine position and avoid head tilting for 1 day. The implant spontaneously relocated into the vitreous cavity, resulting in a reduction of corneal edema. This suggests that the dislocation of the intravitreal implant into the anterior chamber may be caused by a local zonular abnormality, and the dislocated implant has the potential to reposition itself spontaneously.
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Affiliation(s)
- L L Liang
- Department of Ophthalmology, First Hospital of Jilin University, Changchun 130021, China
| | - S Ju
- Department of Ophthalmology, Traditional Chinese Medicine Hospital of Liaoyuan, Liaoyuan 123600, China
| | - Z H Cui
- Department of Ophthalmology, First Hospital of Jilin University, Changchun 130021, China
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2
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Cao Z, Wang S, Qi M, Zhang J, Liu R, Ren X, Wu Q, Cui Z, Dong H. Exploring the induction of endometrial epithelial cell apoptosis in clinical-type endometritis in yaks through the cyt-c/caspase-3 signaling axis. Microb Pathog 2024; 186:106470. [PMID: 38043625 DOI: 10.1016/j.micpath.2023.106470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 11/18/2023] [Accepted: 11/27/2023] [Indexed: 12/05/2023]
Abstract
Endometritis is a significant contributor to reduced productivity in yaks in Tibet, China. The Cyt-c/Caspase-3 signaling axis plays a crucial role in the mitochondrial pathway that triggers cell apoptosis due to endogenous factors. In this study, we examined the endometrial epithelial tissue of yaks with endometritis using pathological examination, immunohistochemical analysis, TUNEL staining, qRT-PCR, and Western blot. The results indicated significant changes in the apoptotic factors of the Cyt-c/Caspase-3 signaling axis. The expression levels of Bak1, Bax, Cyt-c, Apaf-1, Caspase-9, and Caspase-3 were significantly increased (P < 0.05), while the expression level of Bcl-2 was significantly decreased. Immunohistochemistry results revealed significant increase in Bak1, Bax, Cyt-c, Apaf-1, Caspase-9, and Caspase-3 expression in the cytoplasm compared to the healthy group, except for Bcl-2, which showed a significant decrease. Pathological section analysis demonstrated that clinical endometritis in yaks led to structural damage, bleeding, congestion, and inflammatory cell infiltration in the endometrial epithelium. Our study findings indicated that clinical endometritis in yaks can modulate apoptosis of endometrial epithelial cells via the Cyt-c/Caspase-3 signaling pathway, resulting in different levels of damage. This research is pioneering in exploring cell apoptosis induced by clinical endometritis in yaks, offering novel insights and potential strategies for the future prevention and treatment of endometritis in yaks.
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Affiliation(s)
- Zhipeng Cao
- Animal Science College, Tibet Agriculture & Animal Husbandry University, Linzhi 860000, China
| | - Shuo Wang
- Animal Science College, Tibet Agriculture & Animal Husbandry University, Linzhi 860000, China
| | - Ming Qi
- Animal Husbandry and Veterinary Station of Linzhi Agricultural and Rural Bureau (Animal Disease Prevention and Control Center), Linzhi 860000, China
| | - Jingbo Zhang
- Animal Science College, Tibet Agriculture & Animal Husbandry University, Linzhi 860000, China
| | - Ruidong Liu
- Animal Science College, Tibet Agriculture & Animal Husbandry University, Linzhi 860000, China
| | - Xiaoli Ren
- Animal Science College, Tibet Agriculture & Animal Husbandry University, Linzhi 860000, China
| | - Qingxia Wu
- Animal Science College, Tibet Agriculture & Animal Husbandry University, Linzhi 860000, China
| | - Zhonghua Cui
- Animal Disease Prevention and Control Center, Lintong District, Xi'an 710600, China
| | - Hailong Dong
- Animal Science College, Tibet Agriculture & Animal Husbandry University, Linzhi 860000, China.
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3
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Liu YY, Dong MJ, Bo YL, Cui ZH. [Effect and mechanism of 1, 25(OH) 2D 3 on myocardial inflammation induced by Coxsackie virus B3 in mice]. Zhonghua Yi Xue Za Zhi 2023; 103:2881-2888. [PMID: 37726995 DOI: 10.3760/cma.j.cn112137-20230531-00895] [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: 09/21/2023]
Abstract
Objective: To explore the effect and mechanism of 1, 25(OH)2D3 on myocardial inflammation induced by Coxsackie virus B3 (CVB3) in mice. Methods: Wild type (WT) and 1α-hydroxylase knockout [1(OH)ase-/-] male mice were divided into four groups: WT group, WT+CVB3 group, 1(OH)ase-/-+CVB3 group and 1(OH)ase-/-+CVB3+VD3 group, with 8 mice in each group. The indicators for evaluating myocardial cell injury were examined by different methods. The mRNA levels of pro-inflammatory cytokines [interlenkin (IL)-1β, IL-6, interferon γ (IFN-γ) and tumor necrosis factor α (TNF-α)] were determined by quantitative real-time PCR. Hematoxylin-eosin (HE) staining was used to observe the myocardial histopathological changes. The apoptosis of myocardial cells was detected by terminal deoxynucleotidyl transferase dUTP nick-end labeling (TUNEL) staining and flow cytometry. Fluo-4/AM fluorescence probe was used to detect intracellular calcium ion content. Meanwhile, the expression levels of Ca2+/Calmodulin-dependent protein kinase Ⅱ (CaMKⅡ) protein as well as endoplasmic reticulum stress-related proteins like glucose-related protein 78 (GRP78) and C/EBP homologous protein (CHOP) in the myocardial tissues were detected by Western blot. Results: Compared with WT group, the mRNA levels of pro-inflammatory factors increased in the cardiomyocytes of mice in WT+CVB3 group, including IL-1β (14.88±3.32 vs 1.03±0.02, P=0.009), IL-6 (7.00±1.09 vs 1.81±0.18, P=0.005), IFN-γ (4.70±1.11 vs 1.34±0.34, P=0.006) and TNF-α (17.20±3.22 vs 1.02±0.12, P<0.001). Similarly, the infiltration of inflammatory cells, and the apoptosis rate of cardiomyocytes elevated (16.66%±1.09% vs 7.85%±1.12%, P=0.012). The level of calcium ions in myocardial cytoplasm was significantly higher in WT+CVB3 group than that in the WT group (2.98±1.05 vs 0.96±0.10, P=0.006). Likewise, the expression levels of pCaMKⅡ(1.97±0.34 vs 1.00±0, P<0.001), GRP78 (1.78±0.19 vs 1.00±0, P=0.005) and CHOP (1.62±0.09 vs 1.00±0, P=0.002) in WT+CVB3 group up-regulated. The above myocardial cell injury markers were more significant in the 1(OH)ase-/-+CVB3 group. In the 1(OH)ase-/-+CVB3+VD3 group, 1, 25(OH)2D3 supplementation significantly improved myocardial cell injury indicators. Meanwhile, the specific inhibitors of CaMKⅡ can also reduce the myocardial injury and apoptosis rate of CVB3-infected mice. Conclusion: 1, 25(OH)2D3 deficiency can aggravate myocardial inflammation through over activation of CaMKⅡ.
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Affiliation(s)
- Y Y Liu
- Department of Endocrinology, the Affiliated Huai'an No.1 People's Hospital of Nanjing Medical University, Huai'an 223300, China
| | - M J Dong
- Department of Endocrinology, the Affiliated Huai'an No.1 People's Hospital of Nanjing Medical University, Huai'an 223300, China
| | - Y L Bo
- Department of Endocrinology, the Affiliated Huai'an No.1 People's Hospital of Nanjing Medical University, Huai'an 223300, China
| | - Z H Cui
- Department of Endocrinology, the Affiliated Huai'an No.1 People's Hospital of Nanjing Medical University, Huai'an 223300, China
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Miao F, Wang B, Zhang L, Yan X, Tang H, Cui Z, Liu J, Tian A, Li J. Distinct Associations Between Postdischarge Cognitive Change Patterns and 1-year Outcomes in Patients Hospitalized for Heart Failure. J Card Fail 2023; 29:870-879. [PMID: 36764442 DOI: 10.1016/j.cardfail.2023.01.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 01/04/2023] [Accepted: 01/05/2023] [Indexed: 02/11/2023]
Abstract
BACKGROUND The patterns of patients' cognitive function after hospital discharge for heart failure (HF), their prognostic implication and the predictors for new-onset cognitive impairment remain unknown. METHODS AND RESULTS We included 2307 patients (64 ± 14 years, 36.4% female sex) hospitalized for HF from a cohort who completed cognitive testing before discharge and after 1 month. Among 1658 patients with normal cognition before discharge, 229 (13.8%) and 1429 (86.2%) had new-onset cognitive impairment and normal cognition at 1 month, respectively. Of the 649 with cognitive impairment, 315 (48.5%) and 334 (51.5%) had transient and persistent cognitive impairment, respectively. Multivariable analyses showed that, compared with normal cognition, patients with new-onset cognitive impairment had an increased risk of cardiovascular death or HF rehospitalization (hazard ratio 1.35, 95% confidence interval 1.07-1.70); patients with persistent cognitive impairment showed an increased risk, but it was not statistically significant (hazard ratio 1.17, 95% confidence interval 0.95-1.44); patients with transient cognitive impairment had a similar risk (hazard ratio 0.91, 95% confidence interval 0.73-1.13). Older age, females, lower education level, prior atherosclerotic cardiovascular diseases, lower health status, and lower Mini-Cog score before discharge predicted new-onset cognitive impairment. CONCLUSIONS Acute HF substantially affects short-term cognition. Patients who have developed new-onset cognitive impairment have an increased risk of adverse outcomes. Monitoring cognition is necessary, particularly in high-risk patients.
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Affiliation(s)
- Fengyu Miao
- National Clinical Research Center for Cardiovascular Diseases, NHC Key Laboratory of Clinical Research for Cardiovascular Medications, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, National Center for Cardiovascular Diseases, Beijing, People's Republic of China; Fuwai Hospital, Chinese Academy of Medical Sciences, Shenzhen, People's Republic of China
| | - Bin Wang
- National Clinical Research Center for Cardiovascular Diseases, NHC Key Laboratory of Clinical Research for Cardiovascular Medications, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, National Center for Cardiovascular Diseases, Beijing, People's Republic of China; Fuwai Hospital, Chinese Academy of Medical Sciences, Shenzhen, People's Republic of China
| | - Lihua Zhang
- National Clinical Research Center for Cardiovascular Diseases, NHC Key Laboratory of Clinical Research for Cardiovascular Medications, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, National Center for Cardiovascular Diseases, Beijing, People's Republic of China; Fuwai Hospital, Chinese Academy of Medical Sciences, Shenzhen, People's Republic of China
| | - Xiaofang Yan
- National Clinical Research Center for Cardiovascular Diseases, NHC Key Laboratory of Clinical Research for Cardiovascular Medications, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, National Center for Cardiovascular Diseases, Beijing, People's Republic of China; Fuwai Hospital, Chinese Academy of Medical Sciences, Shenzhen, People's Republic of China
| | - Huifang Tang
- The First Affiliated Hospital of University of South China, Hengyang, Hunan, People's Republic of China
| | - Zhonghua Cui
- Hulunbeir People's Hospital, Hulunbeir, Inner Mongolia, People's Republic of China
| | - Juan Liu
- The Affiliated People Hospital of Inner Mongolia Medical University, Hohhot, Inner Mongolia, People's Republic of China
| | - Aoxi Tian
- National Clinical Research Center for Cardiovascular Diseases, NHC Key Laboratory of Clinical Research for Cardiovascular Medications, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, National Center for Cardiovascular Diseases, Beijing, People's Republic of China; Fuwai Hospital, Chinese Academy of Medical Sciences, Shenzhen, People's Republic of China
| | - Jing Li
- National Clinical Research Center for Cardiovascular Diseases, NHC Key Laboratory of Clinical Research for Cardiovascular Medications, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, National Center for Cardiovascular Diseases, Beijing, People's Republic of China; Fuwai Hospital, Chinese Academy of Medical Sciences, Shenzhen, People's Republic of China; Central-China Branch of National Center for Cardiovascular Diseases, Central-China Hospital, Zhengzhou, Henan, People's Republic of China.
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5
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Dong X, Liu YQ, Liu XB, Pan S, Cui ZH, Merino G. Be4B12+: A Covalently Bonded Archimedean Beryllo‐Borospherene. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202208152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Xue Dong
- Jilin University Institute of Atomic and Molecular Physics CHINA
| | - Yu-qian Liu
- Jilin University Institute of Atomic and Molecular Physics CHINA
| | - Xin-bo Liu
- Jilin University Institute of Atomic and Molecular Physics CHINA
| | - Sudip Pan
- University of Marburg: Philipps-Universitat Marburg Fachbereich Chemie Descending Number of Current Assignments GERMANY
| | - Zhong-hua Cui
- Jilin University Institute of Atomic and Molecular Physics CHINA
| | - Gabriel Merino
- Centro de Investigacion y de Estudios Avanzados del Instituto Politecnico Nacional Fisica Aplicada Km. 6 Antigua carretera a Progreso Apdo. Postal 73, Cordemex 97310 Merida MEXICO
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Meng J, Zhang H, Cui Z, Guo H, Mašek O, Sarkar B, Wang H, Bolan N, Shan S. Comparative study on the characteristics and environmental risk of potentially toxic elements in biochar obtained via pyrolysis of swine manure at lab and pilot scales. Sci Total Environ 2022; 825:153941. [PMID: 35189204 DOI: 10.1016/j.scitotenv.2022.153941] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 01/24/2022] [Accepted: 02/13/2022] [Indexed: 06/14/2023]
Abstract
Pyrolysis is considered as a promising method to immobilize potentially toxic elements (PTEs) in animal manures. However, comparative study on characteristics and environmental risk of PTEs in biochar obtained by pyrolysis of animal manure at different reactors are lacking. In this study, swine manure was pyrolyzed at 300-600 °C in a lab-scale or pilot-scale reactor with the aim to investigate their effects on characteristics and environmental risk of As, Cd, Cu, Ni, Pb, and Zn in swine manure biochar. Results showed that biochars produced from pilot scale had lower pH and carbon (C) content but higher oxygen (O) content than those from lab scale. Biochars from pilot scale had higher total PTEs (except Cd) concentrations and releasable PTEs (except Pb) but lower CaCl2-extractable PTEs and phytotoxicity germination index (GI) to radish seedings than those from lab scale. Chemical speciation analysis indicated that PTEs in biochar produced from pilot-scale fast pyrolysis at 400 °C had higher percentage of more stable fraction (F5 fraction) and lower potential ecological risk index (RI) than those from lab-scale slow pyrolysis. These findings demonstrated that bioavailability and potential ecological risk of PTE in swine manure biochar were greatly decrease in the pilot-scale pyrolysis reactor and the optimum temperature was 400 °C considering the lowest potential ecological risk index.
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Affiliation(s)
- Jun Meng
- Institute of Eco-environmental Research, School of Environmental and Natural Resources, Zhejiang University of Science & Technology, Hangzhou 310023, China
| | - Henglei Zhang
- Institute of Eco-environmental Research, School of Environmental and Natural Resources, Zhejiang University of Science & Technology, Hangzhou 310023, China
| | - Zhonghua Cui
- Institute of Eco-environmental Research, School of Environmental and Natural Resources, Zhejiang University of Science & Technology, Hangzhou 310023, China
| | - Haipeng Guo
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Ningbo University, Ningbo 315211, China.
| | - Ondřej Mašek
- UK Biochar Research Centre, School of GeoSciences, University of Edinburgh, King's Buildings, Edinburgh EH9 3FF, UK
| | - Binoy Sarkar
- Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, UK
| | - Hailong Wang
- Biochar Engineering Technology Research Center of Guangdong Province, School of Environmental and Chemical Engineering, Foshan University, Foshan, Guangdong 528000, China
| | - Nanthi Bolan
- School of Agriculture and Environment, The University of Western Australia, Perth, WA 6001, Australia; The UWA Institute of Agriculture, The University of Western Australia, Perth, WA 6001, Australia
| | - Shengdao Shan
- Institute of Eco-environmental Research, School of Environmental and Natural Resources, Zhejiang University of Science & Technology, Hangzhou 310023, China.
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Chen C, Wang MH, Feng LY, Zhao LQ, Guo JC, Zhai HJ, Cui ZH, Pan S, Merino G. Bare and ligand protected planar hexacoordinate silicon in SiSb 3M 3+ (M = Ca, Sr, Ba) clusters. Chem Sci 2022; 13:8045-8051. [PMID: 35919428 PMCID: PMC9278486 DOI: 10.1039/d2sc01761j] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 06/10/2022] [Indexed: 11/21/2022] Open
Abstract
The global minimum of SiSb3M3+ (M = Ca, Sr, Ba) is a D3h symmetric structure containing an elusive planar hexacoordinate silicon (phSi) atom. Most importantly, the phSi core remains intact in ligand protected environment as well.
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Affiliation(s)
- Chen Chen
- Institute of Atomic and Molecular Physics, Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), Jilin University, Changchun 130021, China
| | - Meng-hui Wang
- Institute of Atomic and Molecular Physics, Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), Jilin University, Changchun 130021, China
| | - Lin-Yan Feng
- Nanocluster Laboratory, Institute of Molecular Science, Shanxi University, Taiyuan 030006, China
| | - Lian-Qing Zhao
- Nanocluster Laboratory, Institute of Molecular Science, Shanxi University, Taiyuan 030006, China
| | - Jin-Chang Guo
- Nanocluster Laboratory, Institute of Molecular Science, Shanxi University, Taiyuan 030006, China
| | - Hua-Jin Zhai
- Nanocluster Laboratory, Institute of Molecular Science, Shanxi University, Taiyuan 030006, China
| | - Zhong-hua Cui
- Institute of Atomic and Molecular Physics, Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), Jilin University, Changchun 130021, China
| | - Sudip Pan
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35032 Marburg, Germany
| | - Gabriel Merino
- Departamento de Física Aplicada, Centro de Investigación y de Estudios Avanzados, Unidad Mérida, km 6 Antigua carretera a Progreso, Apdo. Postal 73, Cordemex 97310, Mérida, Yuc., Mexico
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Abstract
Phenalenyls (PLYs) are important synthons in many functional and electronic materials, which often display favorable molecule-to-molecule overlap for electron or hole transport. They also serve as a prototype for π-stacking pancake bonding based on two-electron multicenter bonding (2e/mc). Unexpected near-doubling of the binding energy is obtained for the positively charged PLY2 + dimer with an effect similar to that seen for the positively charged olympicenyl (OPY) radical dimer. This charge effect is reversed for the perfluorinated (PF) dimers, and the negatively charged perfluorinated (PF) dimers PF-PLY2 - and PF-OPY2 - become strongly bound. Long-range interactions reflect these differences. Also surprising is that in this case the pancake bonding corresponds to single-electron (1e/mc) or a three-electron (3e/mc) multicenter bonding in contrast to the 2e/mc bonding that occurs for the neutral radical dimers. The strong preference for a large intermolecular overlap is maintained in these charged dimers. Importantly, the preference for π-bonding in the charged dimers compared to σ-bonding is strongly enhanced relative to the neutral PLY dimers.
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Affiliation(s)
- Zhong-hua Cui
- Institute
of Atomic and Molecular Physics, Key Laboratory of Physics and Technology
for Advanced Batteries (Ministry of Education), Jilin University, Changchun 130012, P. R. China
- Beijing
National Laboratory for Molecular Sciences, Beijing 100190, P. R. China
| | - Meng-hui Wang
- Institute
of Atomic and Molecular Physics, Key Laboratory of Physics and Technology
for Advanced Batteries (Ministry of Education), Jilin University, Changchun 130012, P. R. China
| | - Hans Lischka
- Department
of Chemistry and Biochemistry, Texas Tech
University, Lubbock, Texas 79409, United States
- A
School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, P. R. China
| | - Miklos Kertesz
- Chemistry
Department and Institute of Soft Matter, Georgetown University, Washington, D.C. 20057-1227, United States
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Dong X, Chen C, Cui ZH. Tuning structural preference of negatively charged B16 by ionically or covalently interacting with alkali and coinage metals. Chem Phys 2021. [DOI: 10.1016/j.chemphys.2021.111315] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Meng J, Cui Z, Zhang H, Zhang J, Tang X, Wong MH, Shan S. Combined effects of arbuscular mycorrhizae fungus and composted pig manure on the growth of ryegrass and uptake of Cd and Zn in the soil from an e-waste recycling site. Environ Sci Pollut Res Int 2021; 28:12677-12685. [PMID: 33085006 DOI: 10.1007/s11356-020-11215-y] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 10/11/2020] [Indexed: 06/11/2023]
Abstract
Little attention has been paid to the combined effects of arbuscular mycorrhizae (AM) fungus and composted manure on heavy metal bioavailability and its uptake by plants grown in heavy metal-contaminated soils from electronic-waste (e-waste) recycling sites. A greenhouse pot experiment was conducted to investigate the effects of AM fungus, composted pig manure (CM) and AM fungus + CM (ACM) on the growth of ryegrass and uptake of Cd and Zn in the soil collected from an e-waste recycling site. The calcium chloride (CaCl2) and Tessier sequential extraction procedure were adopted to evaluate the bioavailability and chemical speciation of Cd and Zn in the soil. Results showed that the application of CM and ACM significantly increased the pH but decreased the CaCl2-extractable Cd and Zn concentrations in the rhizosphere and bulk soils. ACM treatment significantly shifted Cd from exchangeable fraction to other more stable fractions, and transformed the exchangeable Zn fraction to the carbonate-bound and reducible iron and manganese-bound fractions. Furthermore, the application of ACM can enhance the growth of plant shoots, and decrease the uptake of Cd and Zn in the ryegrass plants. This work suggests that AM fungus in combination with CM amendment may be a potential method for not only remediation of soil Cd and Zn pollution, but also reduction of Cd and Zn uptake by ryegrass grown in the soil from e-waste recycling sites.
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Affiliation(s)
- Jun Meng
- Institute of Eco-environmental Research, School of Environmental and Natural Resources, Zhejiang University of Science and Technology, Hangzhou, 310023, China
| | - Zhonghua Cui
- Institute of Eco-environmental Research, School of Environmental and Natural Resources, Zhejiang University of Science and Technology, Hangzhou, 310023, China
| | - Henglei Zhang
- Institute of Eco-environmental Research, School of Environmental and Natural Resources, Zhejiang University of Science and Technology, Hangzhou, 310023, China
| | - Jin Zhang
- Institute of Eco-environmental Research, School of Environmental and Natural Resources, Zhejiang University of Science and Technology, Hangzhou, 310023, China
| | - Xianjin Tang
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China.
| | - Ming Hung Wong
- Consortium on Health, Environment, Education and Research, Department of Science and Environmental Studies, The Education University of Hong Kong, Hong Kong, China
| | - Shengdao Shan
- Institute of Eco-environmental Research, School of Environmental and Natural Resources, Zhejiang University of Science and Technology, Hangzhou, 310023, China
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11
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Wu SR, Chen XD, Li JL, Yang YT, Cui ZH, Yao JH. Effect of alfalfa hay and starter feed supplementation on caecal microbiota and fermentation, growth, and health of yak calves. Animal 2021; 15:100019. [PMID: 33610512 DOI: 10.1016/j.animal.2020.100019] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2019] [Revised: 07/21/2020] [Accepted: 07/28/2020] [Indexed: 12/12/2022] Open
Abstract
The caecum is the primary site where microbial fermentation and acidosis occurred. The supplementation of starter feed and alfalfa hay has the potential to influence caecal microbiota and then affect caecal fermentation. This study aims to investigate the effect of starter feed and alfalfa hay supplementation on caecal microbiota, immune homeostasis, and growth of preweaning yaks. Twenty 30-day-old male yak calves were randomly assigned to four groups, which separately fed with milk replacer (CON group), milk replacer with alfalfa hay (A group), milk replacer with starter feed (S group), and milk replacer with starter feed plus alfalfa hay (SA group) throughout the trial. Growth performance and plasma physiological and biochemical indicators were measured every 30 days. Calves were sacrificed at 120 days of age. The caecal contents were collected for measuring pH and contents of volatile fatty acids (VFAs) and lipopolysaccharide (LPS) and for characterizing caecal microbiota. The results indicated that individual or simultaneous supplementation with alfalfa hay and starter feed all significantly increased the BW, body height, body length, and chest girth of yak calves. However, supplementation with starter feed significantly increased plasma cortisol, nitric oxide, tumor necrosis factor-α, and interferon-γ concentrations and the ratio of aspartate aminotransferase to alanine aminotransferase of yak calves when compared with the control and alfalfa hay feeding groups, while the co-supplementation of starter feed and alfalfa hay could significantly decrease these inflammation-related indices when compared with the starter feeding group. Sequencing of the 16S rRNA gene showed that starter feed and alfalfa hay separately stimulated the proliferation of starch-decomposing and cellulose- or hemicellulose-decomposing bacteria. This also significantly increased the levels of acetate, propionate, butyrate, valerate, isobutyrate, and isovalerate in the caecal contents. Furthermore, compared with the S and CON groups, the significantly increased genera of Desulfobulbus, Olsenella, Pseudoflavonifractor, and Stomatobaculum in the SA and A groups were beneficial to the immune homeostasis, and the significantly decreased Blautia, Clostridium IV, Bacteroides, Eubacterium, Clostridium XVIII, and Mogibacterium in the SA and A groups were related to the reduced caecal lactate and LPS contents, the decreased inflammatory reaction, and the improved healthy hepatic condition of yak calves. In conclusion, milk replacer supplemented with alfalfa hay and starter feed is recommended during preweaning to improve yak calf health and growth because this regimen promotes the growth and maintains the immune homeostasis of yak calves.
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Affiliation(s)
- S R Wu
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China
| | - X D Chen
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China
| | - J L Li
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China
| | - Y T Yang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China
| | - Z H Cui
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China; Qinghai Academy of Animal Science and Veterinary Medicine, Xining, Qinghai, China
| | - J H Yao
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China.
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12
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Liu YQ, Wang MH, Huang R, Zhao L, Cui ZH. EE triple bonds (E = Group 13) promoted by charge transfer from alkali metals. NEW J CHEM 2021. [DOI: 10.1039/d1nj03611d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Chemical bonding analysis shows that strong charge transfer arises from M4 (M = Li and Na) motifs to E2 (E = Group 13), further making an EE triple bond composed of two π bonds and one delocalized σ bond.
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Affiliation(s)
- Yu-qian Liu
- Institute of Atomic and Molecular Physics, Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), Jilin University, Changchun, China
| | - Meng-hui Wang
- Institute of Atomic and Molecular Physics, Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), Jilin University, Changchun, China
| | - Runfeng Huang
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing, China
| | - Lili Zhao
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing, China
| | - Zhong-hua Cui
- Institute of Atomic and Molecular Physics, Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), Jilin University, Changchun, China
- Beijing National Laboratory for Molecular Sciences, China
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13
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Sun D, Hong X, Cui Z, Du Y, Hui KS, Zhu E, Wu K, Hui KN. Treatment of landfill leachate using magnetically attracted zero-valent iron powder electrode in an electric field. J Hazard Mater 2020; 388:121768. [PMID: 31843409 DOI: 10.1016/j.jhazmat.2019.121768] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 11/25/2019] [Accepted: 11/27/2019] [Indexed: 06/10/2023]
Abstract
This study combined electro-oxidation (EO) and electrocoagulation (EC) process (EO/EC) to treat landfill leachate by using RuO2-IrO2/Ti plate and microscale zero-valent iron powder composite anode. EO was achieved by direct oxidation and indirect oxidation on RuO2-IrO2/Ti plate, whereas EC was achieved using iron powder to lose electrons and produce coagulants in situ. The influences of variables including type of anode material, applied voltage, zero-valent iron dosage, interelectrode gap, and reaction temperature on EO/EC were evaluated. Results showed that at an applied voltage of 10 V, zero-valent iron dosage of 0.2 g, interelectrode gap of 1 cm, and non-temperature-controlled mode, the removal efficiencies were 72.5 % for total organic carbon (TOC), 98.5 % for ammonia, and 98.6 % for total phosphorus (TP). Some heavy metals and hardness were also removed. Further analysis indicated that the removal of TOC, ammonia, and TP followed pseudo-first order, pseudo-zero order, and pseudo-second order kinetic models, respectively. Other characteristics were examined by scanning electron microscopy-energy dispersive spectrometry, X-ray diffraction, and X-ray photoelectron spectroscopy. Overall, our results showed that EO/EC can be used to efficiently remove organic matter, ammonia, TP, and heavy metals from landfill leachate.
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Affiliation(s)
- Dongni Sun
- Department of Chemistry, Zhejiang Sci-tech University, Hangzhou, 310018, PR China; State Environment Protection Key Laboratory of Mineral Metallurgical Resources Utilization and Pollution Control, Wuhan University of Science and Technology, Wuhan, 430081, PR China
| | - Xiaoting Hong
- Department of Chemistry, Zhejiang Sci-tech University, Hangzhou, 310018, PR China.
| | - Zhonghua Cui
- School of Environment and Natural Resources, Zhejiang University of Science and Technology, Hangzhou, 310023, PR China
| | - Yingying Du
- Department of Chemistry, Zhejiang Sci-tech University, Hangzhou, 310018, PR China
| | - K S Hui
- School of Engineering, Faculty of Science, University of East Anglia, Norwich, NR4 7TJ, United Kingdom
| | - Enhao Zhu
- Department of Chemistry, Zhejiang Sci-tech University, Hangzhou, 310018, PR China
| | - Keming Wu
- State Environment Protection Key Laboratory of Mineral Metallurgical Resources Utilization and Pollution Control, Wuhan University of Science and Technology, Wuhan, 430081, PR China
| | - K N Hui
- Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau, China
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14
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Siddique F, Barbatti M, Cui Z, Lischka H, Aquino AJA. Nonadiabatic Dynamics of Charge-Transfer States Using the Anthracene–Tetracyanoethylene Complex as a Prototype. J Phys Chem A 2020; 124:3347-3357. [DOI: 10.1021/acs.jpca.0c01900] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Farhan Siddique
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | | | - Zhonghua Cui
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130400, China
- Beijing National Laboratory for Molecular Sciences, Beijing 100080, China
| | - Hans Lischka
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, United States
| | - Adelia J. A. Aquino
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
- Department of Mechanical Engineering, Texas Tech University, Lubbock, Texas 79409, United States
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15
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Cui ZH, Chen C, Wang Q, Zhao L, Wang MH, Ding YH. Inverse sandwich complexes of B 7M 2−, B 8M 2, and B 9M 2+ (M = Zr, Hf): the nonclassical M–M bonds embedded in monocyclic boron rings. NEW J CHEM 2020. [DOI: 10.1039/d0nj03999c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three delocalized σ orbitals of the boron rings are perpendicularly mixed with one negligible σ and two π bonds of the M2 (M = Zr, Hf) motifs, giving rise to less pronounced and nonclassical bonding interactions between two short-contact M atoms.
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Affiliation(s)
- Zhong-hua Cui
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun
- China
- Beijing National Laboratory for Molecular Sciences
| | - Chen Chen
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun
- China
| | - Qing Wang
- Institute of Advanced Synthesis
- School of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing
- China
| | - Lili Zhao
- Institute of Advanced Synthesis
- School of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing
- China
| | - Meng-hui Wang
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun
- China
| | - Yi-hong Ding
- Institute of Theoretical Chemistry
- Jilin University
- Changchun
- China
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16
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Liang WY, Das A, Dong X, Wang MH, Cui ZH. Structural and electronic properties of MB 22− (M = Na, K) clusters: tubular boron versus quasi-planar boron forms. NEW J CHEM 2019. [DOI: 10.1039/c9nj00661c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Electron deficiency of boron atom has led to the abundant chemical properties of boron clusters, such as intriguing structures, unique multi-center bonding and electronic properties, as well as the structural evolution from planar to three-dimensional forms.
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Affiliation(s)
- Wei-yan Liang
- Institute of Atomic and Molecular Physics
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy
- Jilin University
- Changchun
- China
| | - Anita Das
- Department of Chemistry
- Indian Institute of Engineering Science and Technology
- Shibpur
- Howrah
- India
| | - Xue Dong
- Institute of Atomic and Molecular Physics
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy
- Jilin University
- Changchun
- China
| | - Meng-hui Wang
- Institute of Atomic and Molecular Physics
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy
- Jilin University
- Changchun
- China
| | - Zhong-hua Cui
- Institute of Atomic and Molecular Physics
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy
- Jilin University
- Changchun
- China
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17
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Liang WY, Barroso J, Jalife S, Orozco-Ic M, Zarate X, Dong X, Cui ZH, Merino G. B10M2 (M = Rh, Ir): finally a stable boron-based icosahedral cluster. Chem Commun (Camb) 2019; 55:7490-7493. [DOI: 10.1039/c9cc03732b] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The putative global minimum of clusters with formula B10M2 (M = Rh, Ir) corresponds to icosahedral structures formed by two alternately stacked B5 rings with the metals located at the top and bottom vertices.
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Affiliation(s)
- Wei-yan Liang
- Institute of Atomic and Molecular Physics
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy
- Jilin University
- Changchun
- China
| | - Jorge Barroso
- Departamento de Física Aplicada
- Centro de Investigación y de Estudios Avanzados
- Unidad Mérida
- 97310 Mérida
- Mexico
| | - Said Jalife
- Departamento de Física Aplicada
- Centro de Investigación y de Estudios Avanzados
- Unidad Mérida
- 97310 Mérida
- Mexico
| | - Mesías Orozco-Ic
- Departamento de Física Aplicada
- Centro de Investigación y de Estudios Avanzados
- Unidad Mérida
- 97310 Mérida
- Mexico
| | - Ximena Zarate
- Instituto de Ciencias Químicas Aplicadas
- Theoretical and Computational Chemistry Center
- Facultad de Ingeniería
- Universidad Autónoma de Chile
- Santiago
| | - Xue Dong
- Institute of Atomic and Molecular Physics
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy
- Jilin University
- Changchun
- China
| | - Zhong-hua Cui
- Institute of Atomic and Molecular Physics
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy
- Jilin University
- Changchun
- China
| | - Gabriel Merino
- Departamento de Física Aplicada
- Centro de Investigación y de Estudios Avanzados
- Unidad Mérida
- 97310 Mérida
- Mexico
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18
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Dong X, Das A, Liang WY, Wang MH, Cui ZH. Stable global tubular boron clusters in Na2B18 and Na2B18−. RSC Adv 2019; 9:4665-4670. [PMID: 35520204 PMCID: PMC9060594 DOI: 10.1039/c8ra10123j] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Accepted: 01/28/2019] [Indexed: 02/05/2023] Open
Abstract
The optimal electrostatic interactions arising from the doping effect play a crucial role in stabilizing the tubular structure against the planar and quasi-planar preferences of the negatively charged boron clusters.
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Affiliation(s)
- Xue Dong
- Institute of Atomic and Molecular Physics
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy
- Jilin University
- Changchun
- China
| | - Anita Das
- Department of Chemistry
- Indian Institute of Engineering Science and Technology
- Howrah
- India
| | - Wei-yan Liang
- Institute of Atomic and Molecular Physics
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy
- Jilin University
- Changchun
- China
| | - Meng-hui Wang
- Institute of Atomic and Molecular Physics
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy
- Jilin University
- Changchun
- China
| | - Zhong-hua Cui
- Institute of Atomic and Molecular Physics
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy
- Jilin University
- Changchun
- China
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19
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Sera T, Arai M, Cui Z, Onose K, Karimi A, Kudo S. Unloading of intercellular tension induces the directional translocation of PKCα. J Cell Physiol 2018; 234:9764-9777. [PMID: 30387146 DOI: 10.1002/jcp.27662] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Accepted: 10/02/2018] [Indexed: 12/13/2022]
Abstract
The migration of endothelial cells (ECs) is closely associated with a Ca2+ -dependent protein, protein kinase Cα (PKCα). The disruption of intercellular adhesion by single-cell wounding has been shown to induce the directional translocation of PKCα. We hypothesized that this translocation of PKCα is induced by mechanical stress, such as unloading of intercellular tension, or by intercellular communication, such as gap junction-mediated and paracrine signaling. In the current study, we found that the disruption of intercellular adhesion induced the directional translocation of PKCα even when gap junction-mediated and paracrine signaling were inhibited. Conversely, it did not occur when the mechanosensitive channel was inhibited. In addition, the strain field of substrate attributable to the disruption of intercellular adhesion tended to be larger at the areas corresponding with PKCα translocation. Recently, we found that a direct mechanical stimulus induced the accumulation of PKCα at the stimulus area, involving Ca 2+ influx from extracellular space. These results indicated that the unloading of intercellular tension induced directional translocation of PKCα, which required Ca 2+ influx from extracellular space. The results of this study indicate the involvement of PKCα in the Ca 2+ signaling pathway in response to mechanical stress in ECs.
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Affiliation(s)
- Toshihiro Sera
- Department of Mechanical Engineering, Faculty of Engineering, Kyushu University, Fukuoka, Japan
| | - Masataka Arai
- Department of Mechanical Engineering, Graduate School of Engineering, Kyushu University, Fukuoka, Japan
| | - Zhonghua Cui
- Department of Mechanical Engineering, Graduate School of Engineering, Kyushu University, Fukuoka, Japan
| | - Koichi Onose
- Department of Mechanical Engineering, Graduate School of Engineering, Kyushu University, Fukuoka, Japan
| | - Alireza Karimi
- International Research Fellow, Faculty of Engineering, Kyushu University, Fukuoka, Japan
| | - Susumu Kudo
- Department of Mechanical Engineering, Faculty of Engineering, Kyushu University, Fukuoka, Japan
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20
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Ma D, Li B, Cui Z, Liu K, Chen C, Li G, Hua J, Ma B, Shi Z, Feng S. Multifunctional Luminescent Porous Organic Polymer for Selectively Detecting Iron Ions and 1,4-Dioxane via Luminescent Turn-off and Turn-on Sensing. ACS Appl Mater Interfaces 2016; 8:24097-103. [PMID: 27556893 DOI: 10.1021/acsami.6b07470] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The first case of selective Fe(3+) ions and 1,4-dioxane luminescent sensor based on a porous organic polymer, POP-HT, was synthesized by reaction of tetra(p-aminophenyl)methane and chromophoric 2,5,8-trichloro-s-heptazine. POP-HT displayed prominent fluorescence quenching or enhancement in the presence of Fe(3+) ion or 1,4-dioxane. Moreover, an excellent linear relationship was established between luminescent intensity and the corresponding Fe(3+) ion or 1,4-dioxane concentration. The mechanisms of luminescence quenching and enhancement were also studied by both experiment and theoretical calculation. The results of this study suggest that POP-HT can work as an effective luminescent indicator for qualitative and quantitative detection of Fe(3+) ions and 1,4-dioxane in aqueous solution over other metal ions and organic solvents.
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Affiliation(s)
- Dingxuan Ma
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University , Changchun 130012, China
| | - Baiyan Li
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University , Changchun 130012, China
| | - Zhonghua Cui
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University , Changchun 130012, China
| | - Kang Liu
- College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology , Qingdao 266042, China
| | - Cailing Chen
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University , Changchun 130012, China
| | - Guanghua Li
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University , Changchun 130012, China
| | - Jia Hua
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University , Changchun 130012, China
| | - Benhua Ma
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University , Changchun 130012, China
| | - Zhan Shi
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University , Changchun 130012, China
| | - Shouhua Feng
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University , Changchun 130012, China
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21
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Cui ZH, Yang WS, Zhao L, Ding YH, Frenking G. Unusually Short Be−Be Distances with and without a Bond in Be2F2and in the Molecular Discuses Be2B8and Be2B7−. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201601890] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Zhong-hua Cui
- Institute of Theoretical Chemistry; Jilin University; Changchun 130023 P.R. China
- College of Chemistry; Jilin University; Changchun 130012 P.R. China
| | - Wen-sheng Yang
- College of Chemistry; Jilin University; Changchun 130012 P.R. China
| | - Lili Zhao
- Fachbereich Chemie; Philipps-Universität Marburg; 35032 Marburg Germany
| | - Yi-hong Ding
- Institute of Theoretical Chemistry; Jilin University; Changchun 130023 P.R. China
| | - Gernot Frenking
- Fachbereich Chemie; Philipps-Universität Marburg; 35032 Marburg Germany
- Donostia International Physics Center (DIPC); P.K. 1072 20080 Donostia Euskadi Spain
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22
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Cui ZH, Attah IK, Platt SP, Aziz SG, Kertesz M, El-Shall M. Xe-bearing hydrocarbon ions: Observation of Xe.acetylene+ and Xe.benzene+ radical cations and calculations of their ground state structures. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2016.02.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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23
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Fan JJ, Wang P, Xu X, Liu K, Ruan YY, Zhu YS, Cui ZH, Zhang LJ. Characterization of a TIR-NBS-LRR gene associated with downy mildew resistance in grape. Genet Mol Res 2015. [PMID: 26214478 DOI: 10.4238/2015.july.17.4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Grapevine downy mildew, caused by Plasmopara viticola, is a devastating disease that results in considerable economic losses as well as environmental damage through the repeated application of fungicides. The nucleotide-binding site leucine-rich repeat gene family functions in plant immunoactivity against various pathogens and pests. In this study, the 5' and 3' ends of the resistance gene homology fragment RGA5 were obtained by rapid amplification of cDNA ends. The 4282-base pair full-length cDNA was obtained using gene-specific primers, and the corresponding 1335-amino acid protein sequence contained characteristic nucleotide-binding site leucine-rich repeat domains of plant resistance proteins, including the toll-interleukin receptor type region. Expression of RGA5 during P. viticola infection and abiotic stress was investigated using quantitative real-time polymerase chain reaction. The results showed that treatment with P. viticola and 4 abiotic stimuli (salicyclic acid, methyl-jasmonate, abscisic acid, H2O2) significantly induced RGA5 within 12 days of inoculation. Therefore, RGA5 may play a critical role in protecting grapevines against P. viticola via signaling pathways involving these molecules.
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Affiliation(s)
| | | | - X Xu
- College of Bioscience and Technology, Shenyang Agricultural University, Shenyang, China
| | - K Liu
- Heilongjiang Academy of Agricultural Sciences, Haerbin, China
| | - Y Y Ruan
- College of Bioscience and Technology, Shenyang Agricultural University, Shenyang, China
| | - Y S Zhu
- College of Bioscience and Technology, Shenyang Agricultural University, Shenyang, China
| | - Z H Cui
- College of Bioscience and Technology, Shenyang Agricultural University, Shenyang, China
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24
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Cui ZH, Gupta A, Lischka H, Kertesz M. Concave or convex π-dimers: the role of the pancake bond in substituted phenalenyl radical dimers. Phys Chem Chem Phys 2015; 17:23963-9. [DOI: 10.1039/c5cp03759j] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
π-stacking phenalenyl radical dimers are overwhelmingly convex (a) and not concave (b) due to electron sharing at the SOMO centers.
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Affiliation(s)
- Zhong-hua Cui
- Department of Chemistry
- Georgetown University
- Washington
- USA
| | - Abhinav Gupta
- Department of Chemistry
- Georgetown University
- Washington
- USA
| | - Hans Lischka
- Department of Chemistry and Biochemistry
- Texas Tech University
- Lubbock
- USA
- Institute for Theoretical Chemistry
| | - Miklos Kertesz
- Department of Chemistry
- Georgetown University
- Washington
- USA
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25
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Cui ZH, Sui JJ, Ding YH. How can carbon favor planar multi-coordination in boron-based clusters? Global structures of CBxEy2−(E = Al, Ga, x + y = 4). Phys Chem Chem Phys 2015; 17:32016-22. [DOI: 10.1039/c5cp04776e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
CB2E2Mg (E = Al, Ga) designed in the present study represents the first successful design of a boron-based planar penta-coordinate carbon (ppC) structures as the global minima.
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Affiliation(s)
- Zhong-hua Cui
- Institute of Theoretical Chemistry
- Jilin University
- Changchun 130023
- People's Republic of China
| | - Jing-jing Sui
- Institute of Theoretical Chemistry
- Jilin University
- Changchun 130023
- People's Republic of China
| | - Yi-hong Ding
- Institute of Theoretical Chemistry
- Jilin University
- Changchun 130023
- People's Republic of China
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26
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Lei DM, Piao SG, Jin YS, Jin H, Cui ZH, Jin HF, Jin JZ, Zheng HL, Li JJ, Jiang YJ, Yang CW, Li C. Expression of erythropoietin and its receptor in kidneys from normal and cyclosporine-treated rats. Transplant Proc 2014; 46:521-8. [PMID: 24656003 DOI: 10.1016/j.transproceed.2013.12.047] [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: 08/19/2013] [Revised: 12/07/2013] [Accepted: 12/16/2013] [Indexed: 01/08/2023]
Abstract
Long-term treatment with cyclosporine A (CsA) is associated with various types of complications; however, CsA-induced anemia has not been reported. The present study examined the impact of CsA on hematopoietic parameters and intrarenal expression of erythropoietin (EPO) and the EPO receptor (EPOR) in a rat model of chronic CsA nephrotoxicity. Sprague-Dawley rats were fed a low-salt diet (0.05% sodium) and were treated daily for 4 weeks with vehicle (olive oil 1 mL/kg subcutaneously) or CsA (15 mg/kg subcutaneously). The expression of EPO and EPOR was evaluated by immunohistochemistry and immunoblotting, and hematopoietic parameters were assessed by measuring blood hemoglobin and hematocrit levels, and these variables were compared between treatment groups. Renal function, oxidative stress, histopathology (tubulointerstitial fibrosis), apoptotic cell death, and expression of transforming growth factor β-inducible gene-h3 (βig-h3) were also compared between treatment groups. In kidneys from vehicle-treated rats, endogenous EPO and EPOR protein were expressed constitutively in the outer stripe of the outer medulla and the cortex. EPO protein expression decreased significantly in kidneys from CsA-treated rats. By contrast, EPOR expression was higher in kidneys from CsA-treated rats than in vehicle-treated rats. These changes were accompanied by decreases in serum hemoglobin and hematocrit levels and correlated with the number of cells positive for terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (r = -0.769, P = .003) and βig-h3 protein expression (r = -0.910, P < .001). Long-term treatment with CsA suppresses renal endogenous EPO expression, resulting in anemia. Increases in apoptotic cell death and βig-h3 expression are closely associated with inhibition of EPO expression in chronic CsA nephrotoxicity.
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Affiliation(s)
- D M Lei
- Nephrology and Dialysis Unit, Department of Internal Medicine, YanBian University Hospital, Jilin, China
| | - S G Piao
- Nephrology and Dialysis Unit, Department of Internal Medicine, YanBian University Hospital, Jilin, China; Transplant Research Center, Convergent Research Consortium for Immunologic Disease, Seoul St. Mary's Hospital, Catholic University of Korea, Seoul, Korea
| | - Y S Jin
- Nephrology and Dialysis Unit, Department of Internal Medicine, YanBian University Hospital, Jilin, China
| | - H Jin
- Nephrology and Dialysis Unit, Department of Internal Medicine, YanBian University Hospital, Jilin, China
| | - Z H Cui
- Nephrology and Dialysis Unit, Department of Internal Medicine, YanBian University Hospital, Jilin, China
| | - H F Jin
- Nephrology and Dialysis Unit, Department of Internal Medicine, YanBian University Hospital, Jilin, China
| | - J Z Jin
- Nephrology and Dialysis Unit, Department of Internal Medicine, YanBian University Hospital, Jilin, China
| | - H L Zheng
- Nephrology and Dialysis Unit, Department of Internal Medicine, YanBian University Hospital, Jilin, China
| | - J J Li
- Nephrology and Dialysis Unit, Department of Internal Medicine, YanBian University Hospital, Jilin, China
| | - Y J Jiang
- Nephrology and Dialysis Unit, Department of Internal Medicine, YanBian University Hospital, Jilin, China
| | - C W Yang
- Transplant Research Center, Convergent Research Consortium for Immunologic Disease, Seoul St. Mary's Hospital, Catholic University of Korea, Seoul, Korea
| | - C Li
- Nephrology and Dialysis Unit, Department of Internal Medicine, YanBian University Hospital, Jilin, China.
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Cui ZH, Lischka H, Beneberu HZ, Kertesz M. Double pancake bonds: pushing the limits of strong π-π stacking interactions. J Am Chem Soc 2014; 136:12958-65. [PMID: 25203200 PMCID: PMC4183611 DOI: 10.1021/ja505624y] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2014] [Indexed: 11/30/2022]
Abstract
The concept of a double-bonded pancake bonding mechanism is introduced to explain the extremely short π-π stacking contacts in dimers of dithiatriazines. While ordinary single pancake bonds occur between radicals and already display significantly shorter interatomic distances in comparison to van der Waals (vdW) contacts, the double-bonded pancake dimer is based on diradicaloid or antiaromatic molecules and exhibits even shorter and stronger intermolecular bonds that breach into the range of extremely stretched single bonds in terms of bond distances and binding energies. These properties give rise to promising possibilities in the design of new materials with high electrical conductivity and for the field of spintronics. The analysis of the double pancake bond is based on cutting edge electron correlation theory combining multireference (nondynamical) effects and dispersion (dynamical) contributions in a balanced way providing accurate interaction energies and distributions of unpaired spins. It is also shown that the present examples do not stand isolated but that similar mechanisms operate in several analogous nonradical molecular systems to form double-bonded π-stacking pancake dimers. We report on the amazing properties of a new type of stacking interaction mechanism between π conjugated molecules in the form of a "double pancake bond" which breaks the record for short intermolecular distances and provides formidable strength for some π-π stacking interactions.
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Affiliation(s)
- Zhong-hua Cui
- Department
of Chemistry, Georgetown University, 37th and O Streets, NW, Washington, D.C. 20057-1227, United States
| | - Hans Lischka
- Department
of Chemistry and Biochemistry, Texas Tech
University, Lubbock, Texas 79409-1061, United States
- Institute
for Theoretical Chemistry, University of
Vienna, A-1090 Vienna, Austria
| | - Habtamu Z. Beneberu
- Department
of Chemistry, Georgetown University, 37th and O Streets, NW, Washington, D.C. 20057-1227, United States
- Department
of Chemistry, University of the District
of Columbia, Washington, D.C. 20008, United
States
| | - Miklos Kertesz
- Department
of Chemistry, Georgetown University, 37th and O Streets, NW, Washington, D.C. 20057-1227, United States
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Cui ZH, Lischka H, Beneberu HZ, Kertesz M. Rotational Barrier in Phenalenyl Neutral Radical Dimer: Separating Pancake and van der Waals Interactions. J Am Chem Soc 2014; 136:5539-42. [DOI: 10.1021/ja412862n] [Citation(s) in RCA: 103] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Zhong-hua Cui
- Department
of Chemistry, Georgetown University, Washington, DC 20057-1227, United States
| | - Hans Lischka
- Department
of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, United States
| | - Habtamu Z. Beneberu
- Department
of Chemistry, Georgetown University, Washington, DC 20057-1227, United States
- Department
of Chemistry, University of the District of Columbia, Washington, DC 20008, United States
| | - Miklos Kertesz
- Department
of Chemistry, Georgetown University, Washington, DC 20057-1227, United States
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Yang YF, Cui ZH, Ding YH. Bottom-up substitution assembly of AuF4−n0,−+nPO3 (n = 1–4): a theoretical study of novel oxyfluoride hyperhalogen molecules and anions AuF4−n(PO3)n0,−. Mol Phys 2013. [DOI: 10.1080/00268976.2013.845702] [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: 10/26/2022]
Affiliation(s)
- Yi-fan Yang
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun, People's Republic of China
| | - Zhong-hua Cui
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun, People's Republic of China
| | - Yi-hong Ding
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun, People's Republic of China
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30
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Cui ZH, Lischka H, Mueller T, Plasser F, Kertesz M. Study of the Diradicaloid Character in a Prototypical Pancake-Bonded Dimer: The Stacked Tetracyanoethylene (TCNE) Anion Dimer and the Neutral K2TCNE2Complex. Chemphyschem 2013; 15:165-76. [DOI: 10.1002/cphc.201300784] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2013] [Indexed: 11/08/2022]
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Cui ZH, Contreras M, Ding YH, Merino G. Planar Tetracoordinate Carbon versus Planar Tetracoordinate Boron: The Case of CB4 and Its Cation. J Am Chem Soc 2011; 133:13228-31. [DOI: 10.1021/ja203682a] [Citation(s) in RCA: 87] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Zhong-hua Cui
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, People’s Republic of China
| | - Maryel Contreras
- Departamento de Química, Universidad de Guanajuato, Noria Alta s/n, 36050 Guanajuato, Mexico
| | - Yi-hong Ding
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, People’s Republic of China
| | - Gabriel Merino
- Departamento de Química, Universidad de Guanajuato, Noria Alta s/n, 36050 Guanajuato, Mexico
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Gao SM, Fu LJ, Cui ZH, Ding YH. Can isocyanogen azide exist? Mol Phys 2011. [DOI: 10.1080/00268976.2010.541888] [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: 10/18/2022]
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34
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Cui ZH, Ding YH. NXAl3+ (X = N, P, As): penta-atomic planar tetracoordinate nitrogen with N–X multiple bonding. Phys Chem Chem Phys 2011; 13:5960-6. [DOI: 10.1039/c0cp02475a] [Citation(s) in RCA: 20] [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: 01/17/2023]
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35
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Cui ZH, Shao CB, Gao SM, Ding YH. Pentaatomic planar tetracoordinate carbon molecules [XCAl3]q [(X,q) = (B,−2), (C,−1), (N,0)] with C–X multiple bonding. Phys Chem Chem Phys 2010; 12:13637-45. [DOI: 10.1039/c0cp00296h] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [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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36
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Zhao X, Cui Z, Geng G, Wang J, Zhang Z, Song Y, Liu Z. [Determination of swainsonine in A. variabilis bunge by gas chromatography with methyl-alpha-D-mannopyranoside internal standard method]. Se Pu 2007; 25:781-782. [PMID: 18161343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023] Open
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Abstract
Allergic asthmatic individuals are often exposed to low-doses of allergen in their everyday life. Extended exposure to allergen has lead to down-regulation of the allergic process in cell systems and in animal models. The aim of this study was to evaluate whether any such inhibitory mechanism of allergic responses can be seen in man in vivo. Patients with mild asthma were repeatedly and double-blindly exposed to 25% of the individual dose of allergen that caused an early (EAR) and late asthmatic reaction (LAR). One day after the low-dose allergen or placebo exposure periods, the same individual was given a high-dose allergen challenge. Sputum and blood were collected for the evaluation of eosinophils. Exposure to repeated low doses of allergen induced increased bronchial methacholine responsiveness 6 h after the final allergen exposure (p=0.018), and an increase in the number of eosinophils in sputum. By contrast, the late asthmatic response after challenge with a high dose of allergen was significantly attenuated by approximately 30% at 24 h after the final low-dose allergen exposure (p = 0.03). In summary, repeated low doses of allergen given directly to the airways, attenuate the high-dose allergen-induced late response, despite enhanced bronchial hyperresponsiveness to methacholine and elevated sputum eosinophils prior to allergen challenge.
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Affiliation(s)
- M Palmqvist
- Dept of Respiratory Medicine and Allergology, Institute of Heart and Lung Diseases, University of Göteborg, Sahlgrenska, University Hospital, Sweden
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Zhao LL, Lindén A, Sjöstrand M, Cui ZH, Lötvall J, Jordana M. IL-12 regulates bone marrow eosinophilia and airway eotaxin levels induced by airway allergen exposure. Allergy 2000; 55:749-56. [PMID: 10955701 DOI: 10.1034/j.1398-9995.2000.00583.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
BACKGROUND Airway allergen exposure causes local eosinophilic cell infiltration. This cellular inflammatory response is likely to involve the release of eosinophils from peripheral storage pools, and possibly also regeneration of eosinophils in the bone marrow. IL-12 is an inhibitory cytokine in allergic inflammation, shown to reduce eosinophilic cell infiltration. The aim of the present study was to determine whether airway allergen exposure increases bone marrow eosinophil production, and, if so, whether IL-12 modulates this effect. METHODS Ovalbumin-sensitized C57BL/6 mice and IL-12 knockout (KO) mice were exposed to allergen via the airway route, and the inflammatory cell response was evaluated in bronchoalveolar lavage fluid, blood, and bone marrow. RESULTS Allergen instillation intranasally produced a dose-dependent inflammatory response in the lower airways of sensitized mice. This inflammatory response was dominated by eosinophils, but there were also increases of both lymphocytes and neutrophils. Sensitization and airway allergen exposure also increased the IL-5-dependent growth of bone marrow cells in vitro. The enhanced bone marrow responsiveness in vitro was paralleled by an increased number of bone marrow eosinophils in vivo. After sensitization and repeated allergen exposure, IL-12 KO mice showed higher eosinophil levels in both BAL and bone marrow than parallel wild-type control mice. Furthermore, BAL-eotaxin levels were increased in IL-12 KO mice as opposed to parallel wild-type controls after allergen exposure. CONCLUSIONS Airway allergen exposure induced systemic immunologic responses, including increased eosinophil numbers in both airways and bone marrow, and also enhanced IL-5 responsiveness in bone marrow cells. IL-12 may regulate airway eosinophilia at both the level of eosinophilopoiesis and the level of local recruitment of eosinophils into the airways.
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Affiliation(s)
- L L Zhao
- Department of Respiratory Medicine and Allergology, Göteborg University, Gothenburg, Sweden
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Abstract
Prolonged exposure to allergen has been proposed to be important for the development of bronchial hyperresponsiveness and airway remodelling in asthma. The present study was designed to examine the effect of chronic allergen exposure on bronchial responsiveness, eosinophil infiltration, and airway remodelling. We sensitized brown Norway rats with the occupational allergen trimellitic anhydride (TMA) and exposed the animals to TMA conjugated to rat serum albumin (TMA-RSA) on 5 consecutive days each week for 9 weeks, starting 4 weeks after sensitization. IgE and IgG anti-TMA antibodies in serum and bronchial responsiveness to acetylcholine were evaluated before and at weeks 3, 6, and 9 of allergen exposure. Thickness of the airway wall, airway luminal narrowing, and the number of goblet cells and eosinophils in the airway wall were evaluated with an image analysis system in lungs resected after the last assessment of bronchial responsiveness, at the end of the 9-week allergen exposure. All rats developed IgE and IgG anti-TMA antibodies after sensitization. The levels of antibodies increased with allergen exposure until week 6, and then declined. Bronchial hyperresponsiveness to acetylcholine was induced in allergen-exposed rats without ongoing airway eosinophilia. Bronchial hyperresponsiveness induced by chronic allergen exposure via inhalation was accompanied by significantly increased thickness of smooth muscle and airway narrowing in the small airways, and goblet cell hyperplasia in the large airways. We conclude that chronic exposure to allergen can induce bronchial hyperresponsiveness and airway wall remodelling. Airway wall remodelling may contribute to bronchial hyperresponsiveness.
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Affiliation(s)
- Z H Cui
- Department of Respiratory Medicine and Allergology, Göteborg University, Sweden
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40
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Laan M, Cui ZH, Hoshino H, Lötvall J, Sjöstrand M, Gruenert DC, Skoogh BE, Lindén A. Neutrophil recruitment by human IL-17 via C-X-C chemokine release in the airways. J Immunol 1999; 162:2347-52. [PMID: 9973514] [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: 02/10/2023]
Abstract
IL-17 is a recently discovered cytokine that can be released from activated human CD4+ T lymphocytes. This study assessed the proinflammatory effects of human (h) IL-17 in the airways. In vitro, hIL-17 increased the release of IL-8 in human bronchial epithelial and venous endothelial cells, in a time- and concentration-dependent fashion. This effect of hIL-17 was inhibited by cotreatment with an anti-hIL-17 Ab and was potentiated by hTNF-alpha. In addition, hIL-17 increased the expression of hIL-8 mRNA in bronchial epithelial cells. Conditioned medium from hIL-17-treated bronchial epithelial cells increased human neutrophil migration in vitro. This effect was blocked by an anti-hIL-8 Ab. In vivo, intratracheal instillation of hIL-17 selectively recruited neutrophils into rat airways. This recruitment of neutrophils into the airways was inhibited by an anti-hIL-17 Ab and accompanied by increased levels of rat macrophage inflammatory protein-2 (rMIP-2) in bronchoalveolar lavage (BAL) fluid. The BAL neutrophilia was also blocked by an anti-rMIP-2 Ab. The effect of hIL-17 on the release of hIL-8 and rMIP-2 was also inhibited by glucocorticoids, in vitro and in vivo, respectively. These data demonstrate that hIL-17 can specifically and selectively recruit neutrophils into the airways via the release of C-X-C chemokines from bronchial epithelial cells and suggest a novel mechanism linking the activation of T-lymphocytes to recruitment of neutrophils into the airways.
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Affiliation(s)
- M Laan
- Lung Pharmacology Group, Department of Respiratory Medicine and Allergology, Göteborg University, Sweden
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41
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Lacaille-Dubois MA, Hanquet B, Cui ZH, Lou ZC, Wagner H. A new biologically active acylated triterpene saponin from silene fortunei. J Nat Prod 1999; 62:404. [PMID: 10075803 DOI: 10.1021/np9805600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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42
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Cui ZH, Arakawa H, Kawikova I, Skoogh BE, Lötvall J. Relationship between systemic blood pressure, airway blood flow and plasma exudation in guinea-pig. Acta Physiol Scand 1999; 165:121-7. [PMID: 10090322 DOI: 10.1046/j.1365-201x.1999.00491.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Plasma exudation in the airways is mainly dependent on microvascular permeability of the tracheobronchial circulation and may be affected by local blood flow. Aortic blood pressure provides the major inflow pressure to tracheobronchial circulation. Therefore, systemically administered vasoconstrictors, in doses enough to increase systemic blood pressure, may theoretically increase the blood flow in the tracheobronchial circulation by enhancing inflow pressure. Consequently, this may influence plasma exudation induced by inflammatory mediators in the airways. To test this hypothesis, we used guinea-pigs to study: (1) the effects of i.v. vasoconstrictors (methoxamine and angiotensin II) on blood flow in the tracheal mucosa and in the leg skeletal muscle (Laser-Doppler flowmetry); (2) the effects of i.v. vasoconstrictors on plasma exudation induced by tracheal administration of the inflammatory mediator bradykinin (150 nmol). We found that i.v. methoxamine and angiotensin II significantly increase tracheal mucosa blood flow and systemic blood pressure. The increase in tracheal mucosa blood flow was, in the case of angiotensin II, found to be significantly related to the increase in systemic blood pressure. In separate experiments, pre-treatment with i.v. methoxamine and angiotensin II significantly potentiates Evan's Blue dye exudation induced by bradykinin in the trachea and main bronchi. We conclude that i.v. methoxamine and angiotensin II potentiate bradykinin-induced plasma exudation in the guinea-pig airways, possibly by increasing the local blood flow. The increase in the local blood flow is most likely induced by enhanced systemic blood pressure (inflow pressure), owing to a redistribution of the total body blood flow.
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Affiliation(s)
- Z H Cui
- Department of Respiratory Medicine and Allergology, Göteborg University, Gothenburg, Sweden
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Lacaille-Dubois MA, Hanquet B, Cui ZH, Lou ZC, Wagner H. A new biologically active acylated triterpene saponin from Silene fortunei. J Nat Prod 1999; 62:133-136. [PMID: 9917300 DOI: 10.1021/np980172y] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
A new acylated triterpene-saponin (1), together with a mixture of the known jenisseensosides C and D, has been isolated from the roots of Silene fortunei. The structure of the new compound was established by chemical means and spectroscopic methods as 3-O-[beta-D-galactopyranosyl-(1-->2)-beta-D-glucuronopyranosyl]-28 -O- [[alpha-L-arabinopyranosyl-(1-->2)-alpha-L-arabinopyranosyl- (1-->3)-b eta-D-xylopyranosyl-(1-->4)-alpha-L-rhamnopyranosyl-(1-->2)]-[beta-D- glucopyranosyl-(1-->3)]-4-O-acetyl-beta-D-fucopyranosyl]quillaic acid. This saponin showed a significant enhancement of granulocyte phagocytosis in vitro.
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Affiliation(s)
- M A Lacaille-Dubois
- Laboratoire de Pharmacognosie, Faculté de Pharmacie, Université de Bourgogne, 7, Bd. Jeanne d'Arc, 21033 Dijon Cedex, France.
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Okazawa A, Cui ZH, Lötvall J, Yoshihara S, Skoogh BE, Kashimoto K, Lindén A. Effect of a novel PACAP-27 analogue on muscarinic airway responsiveness in guinea-pigs in vivo. Eur Respir J 1998; 12:1062-6. [PMID: 9863997 DOI: 10.1183/09031936.98.12051062] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
A recent study showed that the novel pituitary adenylate cyclase-activating peptide (PACAP)-27 analogue [Arg15,20,21,Leu17]-PACAP-27-Gly-Lys-Arg-NH2 causes sustained airway smooth muscle relaxation in vitro. This study examined whether this analogue also has bronchoprotective effects, by inhibiting muscarinic airway responsiveness in vivo. Total lung resistance was measured in anaesthetized, tracheostomized and ventilated guinea-pigs. Increasing doses of acetylcholine were given i.v. once before and thereafter repeatedly each hour after intratracheal instillation of either the PACAP-27 analogue or the clinical beta2-agonist bronchodilator salbutamol. Mean arterial blood pressure (MAP) was monitored to detect cardiovascular side-effects. Both the PACAP-27 analogue and salbutamol significantly attenuated the airway responsiveness to acetylcholine. The total inhibitory effect of the PACAP-27 analogue (350 nmol) corresponded to that of salbutamol (35 nmol). The inhibitory effect of salbutamol (35 nmol) peaked during the second hour and disappeared prior to 5 h after administration. In contrast, the corresponding effect of the analogue (350 nmol) gradually increased and peaked during the fifth hour after administration, whereas it did not fade during the observation period. Both the PACAP-27 analogue (350 nmol) and salbutamol (35 nmol) produced a transient decrease in MAP within 6 min after administration. In conclusion, the novel pituitary adenylate cyclase-activating peptide-27 analogue has bronchoprotective properties, by decreasing muscarinic airway responsiveness in guinea pigs in vivo. The time course of its effect is compatible with a more sustained duration of action compared with salbutamol.
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Affiliation(s)
- A Okazawa
- Dept of Respiratory Medicine and Allergology, Göteborg University, Sweden
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Pullerits T, Lundin S, Cui ZH, Dahlgren U, Telemo E, Lötvall J. Bystander suppression of occupational hapten sensitization in rats made tolerant to ovalbumin. Eur Respir J 1998; 12:889-94. [PMID: 9817164 DOI: 10.1183/09031936.98.12040889] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Feeding a soluble antigen to an animal is known to cause a state of unresponsiveness against this antigen. If this antigen is given together with another antigen during the sensitization procedure, impairment of the response to the new antigen can also be seen, a phenomenon referred to as bystander suppression. The induction of tolerance against ovalbumin (OvA) and the effect of bystander suppression on the response to the hapten trimellitic anhydride (TMA), a cause of occupational asthma, were studied in Brown-Norway rats. Rats were fed either OvA-containing pellets or standard diet for 16 days before sensitization with the mixture of TMA and OvA. The animals were followed for 6 weeks after sensitization. Animals made tolerant to OvA showed a significantly suppressed delayed-type hypersensitivity (DTH) reaction against both OvA and TMA compared with the nontolerized control group at 5 weeks after sensitization, implying bystander suppression. By contrast, immunoglobulin (Ig)E and IgG antibody levels were suppressed only against OvA, whereas anti-TMA antibody levels were not affected. Airway eosinophilia after a single aerosol challenge at 6 weeks after sensitization using TMA conjugated to rat serum albumin, correlated with IgE anti-TMA levels in the group made tolerant to OvA and was not affected by OvA ingestion. In conclusion, suppressive factors released in ovalbumin-tolerant rats when they are challenged with ovalbumin, can suppress the response to trimellitic anhydride and this suppression is more pronounced for T-helper1-type responses.
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Affiliation(s)
- T Pullerits
- Dept of Respiratory Medicine and Allergology, Göteborg University, Gothenburg, Sweden
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46
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Cui ZH, Sjöstrand M, Pullerits T, Andius P, Skoogh BE, Lötvall J. Bronchial hyperresponsiveness, epithelial damage, and airway eosinophilia after single and repeated allergen exposure in a rat model of anhydride-induced asthma. Allergy 1997; 52:739-46. [PMID: 9265989 DOI: 10.1111/j.1398-9995.1997.tb01231.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Bronchial hyperresponsiveness (BHR) and damage of the epithelium, as well as eosinophilia in the airway wall, induced by trimellitic anhydride (TMA) in sensitized brown Norway rats were studied. Rats were challenged once or seven times with aerosol of TMA conjugated to rat serum albumin (TMA-RSA) 3 weeks after intradermal TMA sensitization. Airway responsiveness (-log PC300 of acetylcholine i.v.) was measured 24 h after allergen challenge. Epithelial lesion and eosinophil infiltration in the airway walls were quantified under light microscopy, and TMA-specific IgE and IgG in serum were evaluated with ELISA. High levels of TMA-specific IgE and IgG were found in all rats in the sensitized groups compared to nonsensitized groups (P < 0.001). Repeated allergen challenges of 0.03% TMA-RSA for 7 consecutive days enhanced the level of TMA-specific IgG, compared to single challenge (P < or = 0.05). Single allergen challenge of 0.3% TMA-RSA had a nonsignificant tendency to produce BHR in sensitized rats compared to nonsensitized rats (P = 0.06). However, repeated allergen challenges (0.003% and 0.03% TMA-RSA for 7 consecutive days) produced significant BHR in sensitized rats (P < 0.05). Furthermore, repeated low-dose (0.003%) TMA-RSA challenge produced more BHR than a 10 times higher single dose (0.03%) (P < 0.05). Slight damage of the airway epithelium was seen in sensitized and repeat-challenged groups. However, bronchial eosinophilia was found in the sensitized and single-challenged groups, but not in nonsensitized nonchallenged, and sensitized repeat-challenged groups (P < 0.005). We conclude that the brown Norway rat can be sensitized with TMA, and that repeated low-dose allergen challenges produce slight epithelial damage and BHR which is independent of ongoing eosinophilia in the airway wall.
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Affiliation(s)
- Z H Cui
- Department of Clinical Pharmacology, Göteborg University, Sweden
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47
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Lacaille-Dubois MA, Hanquet B, Cui ZH, Lou ZC, Wagner H. Jennisseensosides C and D, biologically active acylated triterpene saponins from Silene jenisseensis. Phytochemistry 1997; 45:985-990. [PMID: 9264608 DOI: 10.1016/s0031-9422(97)00087-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
We previously reported the isolation and structure elucidation of a new trans-p-methoxycinnamoyl triterpene-saponin along with its cis-p-methoxycinnamoyl isomer as an inseparable mixture from the roots of Silene jenisseensis. In a continuing study on this plant, two additional new acylated triterpene-saponins were obtained as an inseparable mixture. Their structures have been established by chemical means and spectroscopic methods including 1D and 2D homonuclear and heteronuclear correlation NMR spectroscopy as 3-O-[beta-D-galactopyranosyl-(1-->2)-beta-D-glucuronopyranosyl]-28 -O-[{alpha-L-rhamnopyranosyl-(1-->2)}-{4-O-trans-p-methoxycinnamoyl++ +}-beta-D-fucopyranosyl] quillaic acid and its cis-isomer, respectively. They showed a significant enhancement of the granulocyte phagocytosis in vitro.
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Cui ZH, Okazawa A, Skoogh BE, Lötvall J. Different effects of a thromboxane mimetic on blood flow and plasma exudation in guinea pig airways and skeletal muscle. Prostaglandins 1997; 53:263-77. [PMID: 9167213 DOI: 10.1016/s0090-6980(97)89600-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Thromboxane A2 (TXA2) is a potent constrictor of both airway and vascular smooth muscle. In addition, plasma exudation is induced in the airways by a thromboxane mimetic (U-46619). Because plasma exudation is associated with a local vasodilatation and increased local blood flow, we hypothesized that the general vasoconstrictor effect of U-46619 would be weaker in the airways than in other vascular beds, perhaps resulting in increased local airway blood flow. We studied the effects of i.v. U-46619 on blood pressure, lung resistance as well as blood flow, plasma exudation in airways and leg skeletal muscle in guinea pigs. We found (1) i.v. U-46619 increases the systemic blood pressure, blood flow in tracheal mucosa but decreases blood flow in leg skeletal muscle; (2) i.v. U-46619 induces plasma exudation in the airways, but not in the leg skeletal muscle; (3) a positive relationship between blood pressure and tracheal blood flow as well as airway plasma exudation, a negative relationship between blood pressure and blood flow in leg skeletal muscle; (4) i.v. U-46619 significantly increases lung resistance. We conclude that i.v. U-46619 induces plasma exudation in airways but not in skeletal muscle, and that this plasma exudation is associated with the increased local blood flow, which in turn is caused by increased inflow pressure and redistribution of the total body blood flow to the airways.
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Affiliation(s)
- Z H Cui
- Department of Clinical Pharmacology, Göteborg University, Gothenburg, Sweden
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Okazawa A, Kawikova I, Cui ZH, Skoogh BE, Lötvall J. 8-Epi-PGF2alpha induces airflow obstruction and airway plasma exudation in vivo. Am J Respir Crit Care Med 1997; 155:436-41. [PMID: 9032175 DOI: 10.1164/ajrccm.155.2.9032175] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
8-Epi-prostaglandin F2alpha (8-epi-PGF2alpha) is an F2-isoprostane formed mainly via noncyclooxygenase pathways in vivo. We investigated whether 8-epi-PGF2alpha has any effect on airflow obstruction and plasma exudation in vivo. Airflow obstruction was quantified by measuring lung resistance (RL) in anesthetized and ventilated guinea pigs, and plasma exudation was quantified by the Evans Blue dye method (20 mg/kg intravenously). Intratracheal instillation of 8-epi-PGF2alpha (1 nmol or 10 nmol) caused dose-related increases in RL. Furthermore, the higher dose of 8-epi-PGF2alpha produced Evans Blue dye extravasation in main bronchi and intrapulmonary airways. A prostanoid TP-receptor antagonist, BAY u3405 (1 mg/kg intravenously), abolished the airway effects of 8-epi-PGF2alpha (10 nmol). A thromboxane A2 (TxA2) synthase inhibitor, OKY-406 (30 mg/kg intravenously), significantly attenuated these effects of 8-epi-PGF2alpha (10 nmol). The level of TxB2, a stable TxA2 metabolite, increased in bronchoalveolar lavage fluid (BALF) after 8-epi-PGF2alpha instillation. We conclude that 8-epi-PGF2alpha causes airflow obstruction and plasma exudation in vivo. This effect may be mediated primarily via prostanoid TP-receptors, and a secondary generation of TxA2 may be involved in part of the airway responses in 8-epi-PGF2alpha in the guinea pig.
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Affiliation(s)
- A Okazawa
- Department of Respiratory Medicine and Allergology, Institute of Heart and Lung Diseases, Goteborg University, Gothenburg, Sweden
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Cao WC, van der Ploeg CP, Gao CL, Xu JF, Cao XC, Cui ZH, Ren ZX, Habbema JD. Seroprevalence and risk factors of human cysticercosis in a community of Shandong, China. Southeast Asian J Trop Med Public Health 1996; 27:279-85. [PMID: 9279990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
A community-based seroepidemiologic survey on Taenia solium cysticercosis in humans was carried out in Shandong Province, China. Blood specimens from 2,898 residents were collected and examined for anti-cysticercus antibody. Information on demographic and potential risk factors was obtained using a standardized questionnaire. The overall seroprevalence of cysticercosis was 3.2%. Seropositivity tended to increase with age ranging from 1.8% in children under 6 years of age to 5.7% in those over 60 years old. Distance between village residence and the town of the community was negatively associated with seropositivity (Chi-square for trend test p = 0.02). Multivariate logistic regression analysis identified four risk factors for cysticercosis infection in the community: defecating indiscriminately (OR = 1.35, 95% CI 1.01-1.81), being unable to identify diseased pork (OR = 4.09, 95% CI 1.53-10.97), raising pigs (OR = 1.36, 95% CI 1.09-1.69), and more than 60 years old (OR = 1.49, 95% CI 1.10-2.02. These findings have implications for developing appropriate strategies for the control of Taenia solium cysticercosis in the community.
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Affiliation(s)
- W C Cao
- Shandong Institute of Parasitic Diseases, Jining, PR China
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