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Wang N, Pei L, Zhang M, Wang G, Zheng S, Kou X, Chen H. The impact of psychological interventions on surgical site wound healing post-surgery in psoriasis patients: A meta-analysis. Int Wound J 2024; 21:e14509. [PMID: 38151959 PMCID: PMC10958094 DOI: 10.1111/iwj.14509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 11/10/2023] [Indexed: 12/29/2023] Open
Abstract
This meta-analysis investigates the impact of psychological interventions on the wound healing process at surgical sites in patients with psoriasis who have undergone various surgical procedures. Following the PRISMA guidelines, an extensive database search was conducted, initially identifying 679 articles, with 6 studies ultimately meeting our rigorous selection criteria. These studies, which included both Randomized Controlled Trials and observational designs, utilized a range of scales, such as the REEDA and Manchester Scar Scale (MSS), to measure the healing of surgical wounds. Statistical analyses were performed using Review Manager and SPSS, revealing that psychological interventions significantly expedited wound healing as early as 1 week post-surgery (I2 = 93%; Random: SMD = -3.01, 95% CI: [-4.35, -1.66], p < 0.01), according to the REEDA scale. At the one-month follow-up, a continued positive effect was observed on the MSS (I2 = 69%; Random: SMD = 2.31, 95% CI: [1.54, 3.08], p < 0.01). The studies demonstrated a low risk of bias, and funnel plot analysis suggested no significant publication bias. These results highlight the beneficial role of psychological support in the postoperative recovery of psoriasis patients, suggesting a need for a more integrated approach to patient care that includes psychological well-being as a component of comprehensive treatment strategies.
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Affiliation(s)
- Na Wang
- Department of DermatologyHebei University of Chinese MedicineShijiazhuangChina
- Department of DermatologyHebei Province Academy of Chinese Medicine SciencesShijiazhuangChina
| | - Lin Pei
- Geriatric DepartmentHebei Province Academy of Chinese Medicine SciencesShijiazhuangChina
| | - Mengqian Zhang
- Department of DermatologyHebei University of Chinese MedicineShijiazhuangChina
| | - Gang Wang
- Department of DermatologyHebei University of Chinese MedicineShijiazhuangChina
| | - Shumao Zheng
- Department of DermatologyHebei Province Academy of Chinese Medicine SciencesShijiazhuangChina
| | - Xiaoli Kou
- Department of DermatologyHebei Province Academy of Chinese Medicine SciencesShijiazhuangChina
| | - Hu Chen
- Department of DermatologyHebei Province Academy of Chinese Medicine SciencesShijiazhuangChina
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2
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Du Z, Wang H, Gao Y, Zheng S, Kou X, Sun G, Song J, Dong J, Wang G. Exploring the Potential Molecular Mechanism of Sijunzi Decoction in the Treatment of Non-Segmental Vitiligo Based on Network Pharmacology and Molecular Docking. Clin Cosmet Investig Dermatol 2023; 16:821-836. [PMID: 37033783 PMCID: PMC10075956 DOI: 10.2147/ccid.s403732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 03/22/2023] [Indexed: 04/03/2023]
Abstract
Background Non-segmental vitiligo is a common decolorized skin disease. The purpose of this study was to reveal the active components of Sijunzi decoction (SJZD) and the target genes for the treatment of non-segmental vitiligo. Methods Based on TCMSP and GEO databases, effective components and targets of SJZD in the treatment of non-segmental vitiligo were revealed by network pharmacology. GO and KEGG were used to analyze the biological functions of SJZD targets. The Cytoscape-cytoHubba plugin was used to identify hub target genes. SsGSEA method was used to analyze the infiltration level of immune cells in non-segmental vitiligo. Molecular docking was performed to predict the interaction between active compounds and hub target genes. Finally, real-time PCR detection was also performed. Results It was found that 104 active compounds may be effective ingredients in the treatment of non-segmental vitiligo. These 104 compounds acted on 42 differentially expressed target genes. KEGG analysis showed that target genes were significantly enriched in immune-related pathways such as MAPK and TNF signaling pathways. A total of 6 hub target genes (AKT1, CASP3, PPARG, SIRT1, TNF and TP53) were identified using the Cytoscape-cytoHubba plugin. Molecular docking showed that active compounds quercetin, kaempferol, formononetin and naringenin had good binding to hub target genes. We also found that Type 2 T helper cells, CD56bright natural killer cell and CD56dim natural killer cell infiltration levels were abnormal in non-segmental vitiligo and correlated with AKT1. Conclusion The results of this study indicate that quercetin, kaempferol, formononetin and naringenin in SJZD may play an important role in the treatment of non-segmental vitiligo by acting on AKT1, CASP3, PPARG, SIRT1, TNF and TP53 to regulate immune cell infiltration and multiple signaling pathways.
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Affiliation(s)
- Ziwei Du
- Department of Dermatology, Hebei Academy of Traditional Chinese Medicine, Shijiazhuang, Hebei, 050031, People’s Republic of China
| | - Hepeng Wang
- Department of Dermatology, Hebei Academy of Traditional Chinese Medicine, Shijiazhuang, Hebei, 050031, People’s Republic of China
| | - Yang Gao
- Department of Dermatology, Hebei Academy of Traditional Chinese Medicine, Shijiazhuang, Hebei, 050031, People’s Republic of China
- Correspondence: Yang Gao, Department of Dermatology, Hebei Academy of Traditional Chinese Medicine, No. 209 Jianhua South Street, Shijiazhuang, Hebei, 050031, People’s Republic of China, Tel +86-15833969687, Email
| | - Shumao Zheng
- Department of Dermatology, Hebei Academy of Traditional Chinese Medicine, Shijiazhuang, Hebei, 050031, People’s Republic of China
| | - Xiaoli Kou
- Department of Dermatology, Hebei Academy of Traditional Chinese Medicine, Shijiazhuang, Hebei, 050031, People’s Republic of China
| | - Guoqiang Sun
- Department of Dermatology, Hebei Academy of Traditional Chinese Medicine, Shijiazhuang, Hebei, 050031, People’s Republic of China
| | - Jinxian Song
- Department of Dermatology, Quyang County People’s Hospital, Baoding, People’s Republic of China
| | - Jingfei Dong
- Department of Clinical Laboratory, Hebei Provincial Hospital of Traditional Chinese Medicine, Shijiazhuang, People’s Republic of China
| | - Genhui Wang
- Department of Dermatology, Hebei Provincial Hospital of Traditional Chinese Medicine, Shijiazhuang, People’s Republic of China
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3
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Huang J, Song Y, Kou X, Tan Z, Zhang S, Sun M, Zhou J, Fan M, Zhang M, Song Y, Li S, Yuan Y, Zhuang W, Zhang J, Zhang L, Jiang H, Gu K, Ye H, Wang Q, Zhu J. 69O First-line serplulimab versus placebo in combination with chemotherapy in PD-L1-positive oesophageal squamous cell carcinoma (ASTRUM-007): A randomised, double-blind, multicentre phase III study. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.10.105] [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: 12/05/2022] Open
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4
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Kou X, Zhang Y, Niu D, Han X, Ma L, Xu J. Polyethylene oxide-engineered graphene with rich mesopores anchoring Bi2O3 nanoparticles for boosting CO2 electroreduction to formate. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.141256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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5
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Kou X, Jiang S, Park SJ, Meng LY. A review: recent advances in preparations and applications of heteroatom-doped carbon quantum dots. Dalton Trans 2020; 49:6915-6938. [PMID: 32400806 DOI: 10.1039/d0dt01004a] [Citation(s) in RCA: 70] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Carbon quantum dots (CQDs) are widely used in optoelectronic catalysis, biological imaging, and ion probes owing to their low toxicity, stable photoluminescence, and ease of chemical modification. However, the low fluorescence yield and monochromatic fluorescence of CQDs limit their practical applications. This review summarizes the commonly used approaches for improving the fluorescence efficiency of CQDs doped with non-metallic (heteroatom) elements. Herein, three types of heteroatom-doped CQDs have been investigated: (1) CQDs doped with a single heteroatom; (2) CQDs doped with two heteroatoms; and (3) CQDs doped with three heteroatoms. The limitations and future perspectives of doped CQDs from the viewpoint of producing CQDs for specific applications, especially for bioimaging and light emitting diodes, have also been discussed herein.
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Affiliation(s)
- Xiaoli Kou
- Department of Chemical Engineering, Yanbian University, Park Road 977, Yanji 133002, Jilin Province, PR China
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6
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Zhou JZ, Waszkuc T, Mohammed F, Blumhorst M, Buren R, Das R, Huang L, Jabusch J, Kou X, Nagarajan M, Nguyen H, Orellana K, Peng TS, Podhola B, Ray C, Reif K, Shevchuk C, Solyom A, Sullivan D, Wang J, Wang W, Yang Q, Zheng Q. Determination of Glucosamine in Raw Materials and Dietary Supplements Containing Glucosamine Sulfate and/or Glucosamine Hydrochloride by High-Performance Liquid Chromatography with FMOC-Su Derivatization: Collaborative Study. J AOAC Int 2019. [DOI: 10.1093/jaoac/88.4.1048] [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: 11/12/2022]
Abstract
Abstract
A collaborative study was conducted for determination of glucosamine in raw materials and dietary supplements containing glucosamine sulfate and/or glucosamine hydrochloride by high-performance liquid chromatography (HPLC) with N-(9-fluorenyl-methoxycarbonyloxy) succinimide (FMOC-Su) derivatization. Thirteen blind materials, one pair of which were duplicates, were tested by 12 collaborating laboratories. The test samples consisted of various commercial products, including tablets, capsules, drink mix, and liquids as well as raw materials, blanks, and those for spike recovery analyses. The tests with blank products and products spiked with glucosamine showed good specificity of the method. The average recoveries at spike levels of 100 and 150% of the declared amount were 99.0% with a relative standard deviation (RSD) of 2.1%, and 101% with an RSD of 2.3%, respectively. The test results between laboratories on each commercial product were reproducible with RSD values of no more than 4.0%, and the results were repeatable in the same laboratory with an average RSD of 0.7%. HorRat values ranged from 0.5 to 1.7 on both tests of spike recovery and reproducibility between laboratories on commercial products. The average determination coefficient of the calibration curves from the laboratories was 0.9995 with an RSD of 0.03%. All of the 12 collaborating laboratories succeeded in the study and none of their reported test results were outliers, partly indicating the robustness of the method. It is recommended that the method be accepted by AOAC INTERNATIONAL as Official First Action.
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Affiliation(s)
- Joseph Ziqi Zhou
- NOW Natural Foods, Methods Development Laboratory, 395 S. Glen Ellyn Rd, Bloomingdale, IL 60108
| | - Ted Waszkuc
- NOW Natural Foods, Methods Development Laboratory, 395 S. Glen Ellyn Rd, Bloomingdale, IL 60108
| | - Felicia Mohammed
- NOW Natural Foods, Methods Development Laboratory, 395 S. Glen Ellyn Rd, Bloomingdale, IL 60108
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Abstract
The preservation of vital dental pulp with vasculature and nerve components remains one of the most significant challenges in modern dentistry. Due to the immense potential for neurovascularization, mesenchymal stem cell (MSC) transplantation has shown emerging promise in regenerative medicine and dental translational practice. Actually, pulp mesenchymal stem cells, including postnatal dental pulp stem cells (from permanent teeth) and stem cells from human exfoliated deciduous teeth, possess unique properties based on their origins from neural crest or glial cells. Furthermore, they reside in a neurovascular niche and have the potential for neurogenesis, angiogenesis, and neurovascular inductive activity. According to current pulp regeneration strategies, pulp stem cell-mediated approaches to regeneration have demonstrated convincing evidence that they can rebuild the complex histologic structure of native pulp in situ with highly organized physiologic patterns or even achieve de novo regeneration of complete dental pulp tissues. More importantly, recent clinical studies emphasized in situ neurovascularization outcomes in successful regeneration of vitalized pulp via pulp stem cell transplantation. In this review, we summarize recent breakthroughs in pulp stem cell-mediated pulp regeneration, emphasizing the crucial achievement of neurovascularization. This functional pulp regeneration represents an innovative and promising approach for future regenerative endodontics.
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Affiliation(s)
- B Sui
- 1 State Key Laboratory of Military Stomatology, Center for Tissue Engineering, School of Stomatology, Fourth Military Medical University, Xi'an, China
- 2 Department of Anatomy and Cell Biology, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - C Chen
- 2 Department of Anatomy and Cell Biology, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - X Kou
- 2 Department of Anatomy and Cell Biology, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
- 3 Guanghua School of Stomatology, South China Center of Craniofacial Stem Cell Research, Sun Yat-sen University, Guangzhou, China
| | - B Li
- 1 State Key Laboratory of Military Stomatology, Center for Tissue Engineering, School of Stomatology, Fourth Military Medical University, Xi'an, China
| | - K Xuan
- 1 State Key Laboratory of Military Stomatology, Center for Tissue Engineering, School of Stomatology, Fourth Military Medical University, Xi'an, China
| | - S Shi
- 2 Department of Anatomy and Cell Biology, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
- 3 Guanghua School of Stomatology, South China Center of Craniofacial Stem Cell Research, Sun Yat-sen University, Guangzhou, China
| | - Y Jin
- 1 State Key Laboratory of Military Stomatology, Center for Tissue Engineering, School of Stomatology, Fourth Military Medical University, Xi'an, China
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Yang H, Han S, Xie B, Mou P, Kou X, Wang T, Ge J, Feng L. Do prey availability, human disturbance and habitat structure drive the daily activity patterns of Amur tigers (
Panthera tigris altaica
)? J Zool (1987) 2018. [DOI: 10.1111/jzo.12622] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- H. Yang
- National Forestry and Grassland Administration Amur Tiger and Amur Leopard Monitoring and Research Center, State Key Laboratory of Earth Surface Processes and Resource Ecology Ministry of Education Key Laboratory for Biodiversity Science and Engineering and College of Life Sciences College of Life Sciences Beijing Normal University Beijing China
- College of Life Sciences Northwest University Xi'an China
| | - S. Han
- National Forestry and Grassland Administration Amur Tiger and Amur Leopard Monitoring and Research Center, State Key Laboratory of Earth Surface Processes and Resource Ecology Ministry of Education Key Laboratory for Biodiversity Science and Engineering and College of Life Sciences College of Life Sciences Beijing Normal University Beijing China
| | - B. Xie
- National Forestry and Grassland Administration Amur Tiger and Amur Leopard Monitoring and Research Center, State Key Laboratory of Earth Surface Processes and Resource Ecology Ministry of Education Key Laboratory for Biodiversity Science and Engineering and College of Life Sciences College of Life Sciences Beijing Normal University Beijing China
| | - P. Mou
- National Forestry and Grassland Administration Amur Tiger and Amur Leopard Monitoring and Research Center, State Key Laboratory of Earth Surface Processes and Resource Ecology Ministry of Education Key Laboratory for Biodiversity Science and Engineering and College of Life Sciences College of Life Sciences Beijing Normal University Beijing China
| | - X. Kou
- National Forestry and Grassland Administration Amur Tiger and Amur Leopard Monitoring and Research Center, State Key Laboratory of Earth Surface Processes and Resource Ecology Ministry of Education Key Laboratory for Biodiversity Science and Engineering and College of Life Sciences College of Life Sciences Beijing Normal University Beijing China
| | - T. Wang
- National Forestry and Grassland Administration Amur Tiger and Amur Leopard Monitoring and Research Center, State Key Laboratory of Earth Surface Processes and Resource Ecology Ministry of Education Key Laboratory for Biodiversity Science and Engineering and College of Life Sciences College of Life Sciences Beijing Normal University Beijing China
| | - J. Ge
- National Forestry and Grassland Administration Amur Tiger and Amur Leopard Monitoring and Research Center, State Key Laboratory of Earth Surface Processes and Resource Ecology Ministry of Education Key Laboratory for Biodiversity Science and Engineering and College of Life Sciences College of Life Sciences Beijing Normal University Beijing China
| | - L. Feng
- National Forestry and Grassland Administration Amur Tiger and Amur Leopard Monitoring and Research Center, State Key Laboratory of Earth Surface Processes and Resource Ecology Ministry of Education Key Laboratory for Biodiversity Science and Engineering and College of Life Sciences College of Life Sciences Beijing Normal University Beijing China
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9
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Jiang X, Bao Y, Liu H, Kou X, Zhang Z, Sun F, Qian Z, Lin Z, Li X, Liu X, Jiang L, Yang Y. VPS34 stimulation of p62 phosphorylation for cancer progression. Oncogene 2017; 36:6850-6862. [PMID: 28846113 PMCID: PMC5735303 DOI: 10.1038/onc.2017.295] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2017] [Revised: 07/14/2017] [Accepted: 07/15/2017] [Indexed: 12/11/2022]
Abstract
Vps34, a class III PtdIns3 lipid kinase involved in the control of both autophagic and endocytic systems, has been studied extensively in numerous fundamental cellular processes. Accumulating evidence indicates that Vps34 may also contribute to the development and progression of human cancers. However, the mechanism of Vps34 in tumorigenesis remains elusive. Here, we report an unanticipated role of Vps34 in the activation of p62 for cancer development. We identified that Vps34 is a transcriptional activator of p62 through competition of Nrf2 (nuclear factor erythroid 2-related factor 2) for Keap1 binding. Vps34 augments the association of PKC-δ with p62 for its phosphorylation at Serine 349, which leads to positive feedback on the Nrf2-dependent transcription of oncogenes. Additionally, we found that the expression of Vps34 is correlated with the tumorigenic activity of human breast cancer cells. Normally inactive in breast cancer, caspase 8 can cleave Vps34 at residue D285, which directly abolished its lipid kinase activity and dramatically altered cell invasion potential, colony formation, as well as tumorigenesis in orthotopic engraftments in mice. The cleavage at D285 blocks expression of LC3-II, Nrf2 and subsequently, p62, in addition to blocking tumor growth, indicating that the intact structure of Vps34 is essential for its activity. Moreover, either knockout of PKC-δ or knockdown of p62 by small interfering RNA in MCF-7 cells abrogates Vps34-dependent tumor growth. Data presented here suggested that Vps34 stimulates tumor development mainly through PKC-δ- activation of p62.
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Affiliation(s)
- X Jiang
- Department of Pharmacology and Biochemistry, School of Pharmacy, Fudan University, Shanghai, China
| | - Y Bao
- Department of Pharmacology and Biochemistry, School of Pharmacy, Fudan University, Shanghai, China
| | - H Liu
- Department of Pharmacology and Biochemistry, School of Pharmacy, Fudan University, Shanghai, China
| | - X Kou
- Department of Pharmacology and Biochemistry, School of Pharmacy, Fudan University, Shanghai, China
| | - Z Zhang
- Department of Pharmacology and Biochemistry, School of Pharmacy, Fudan University, Shanghai, China
| | - F Sun
- Department of Pharmacology and Biochemistry, School of Pharmacy, Fudan University, Shanghai, China
| | - Z Qian
- Department of Pharmacology and Biochemistry, School of Pharmacy, Fudan University, Shanghai, China
| | - Z Lin
- Chemical Biology, Roche Pharmaceutical Research and Early Development, Roche Innovation Center Shanghai, Shanghai, China
| | - X Li
- Department of Gastroenterology, Shanghai Eight People Hospital, Shanghai, China
| | - X Liu
- Department of Pathology, Georgetown University Medical Center, Washington, DC, USA
| | - L Jiang
- Department of Biological Sciences, Oakland University, Rochester, MI, USA
| | - Y Yang
- Department of Pharmacology and Biochemistry, School of Pharmacy, Fudan University, Shanghai, China
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10
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Liu F, Wen F, He D, Liu D, Yang R, Wang X, Yan Y, Liu Y, Kou X, Zhou Y. Force-Induced H 2S by PDLSCs Modifies Osteoclastic Activity during Tooth Movement. J Dent Res 2017; 96:694-702. [PMID: 28165889 DOI: 10.1177/0022034517690388] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Hydrogen sulfide (H2S), a gasotransmitter, has been recently linked to mesenchymal stem cell (MSC) function and bone homeostasis. Periodontal ligament stem cells (PDLSCs) are the main MSCs in PDL, which respond to mechanical force to induce physiological activities during orthodontic tooth movement (OTM). However, it is unknown whether mechanical force might induce endogenous H2S production by PDLSCs to regulate alveolar bone homeostasis. Here, we used a mouse OTM model to demonstrate that orthodontic force-induced endogenous H2S production in PDL tissue was associated with macrophage accumulation and osteoclastic activity in alveolar bone. Then, we showed that mechanical force application induced cystathionine β-synthase (CBS) expression and endogenous H2S production by PDLSCs. Moreover, blocking endogenous H2S or systemically increasing H2S levels could decrease or enhance force-induced osteoclastic activities to control tooth movement. We further revealed how force-induced H2S production by PDLSCs contributed to the secretion of monocyte chemoattractant protein-1 (MCP-1) and the expression of receptor activator of nuclear factor-κB ligand/osteoprotegerin (RANKL/OPG) system by PDLSCs. The secretion and expression of these factors controlled macrophage migration and osteoclast differentiation. This study demonstrated that PDLSCs produced H2S to respond to and transduce force signals. Force-induced gasotransmitter H2S production in PDLSCs therefore regulated osteoclastic activities in alveolar bone and controlled the OTM process through the MCP-1 secretion and RANKL/OPG system.
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Affiliation(s)
- F Liu
- 1 Department of Orthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China.,2 Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
| | - F Wen
- 1 Department of Orthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
| | - D He
- 1 Department of Orthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China.,2 Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
| | - D Liu
- 1 Department of Orthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China.,2 Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
| | - R Yang
- 1 Department of Orthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China.,2 Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
| | - X Wang
- 1 Department of Orthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China.,2 Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
| | - Y Yan
- 1 Department of Orthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China.,2 Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
| | - Y Liu
- 1 Department of Orthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China.,2 Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
| | - X Kou
- 1 Department of Orthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China.,2 Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
| | - Y Zhou
- 1 Department of Orthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China.,2 Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
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11
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Feng L, Yang R, Liu D, Wang X, Song Y, Cao H, He D, Gan Y, Kou X, Zhou Y. PDL Progenitor–Mediated PDL Recovery Contributes to Orthodontic Relapse. J Dent Res 2016; 95:1049-56. [PMID: 27161015 DOI: 10.1177/0022034516648604] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Periodontal ligament (PDL) is subjected to mechanical force during physiologic activities. PDL stem/progenitor cells are the main mesenchymal stem cells in PDL. However, how PDL progenitors participate in PDL homeostasis upon and after mechanical force is largely unknown. In this study, force-triggered orthodontic tooth movement and the following relapse were used as models to demonstrate the response of PDL progenitors and their role in PDL remodeling upon and after mechanical force. Upon orthodontic force, PDL collagen on the compression side significantly degraded, showing a broken and disorganized pattern. After force withdrawal, the degraded PDL collagen recovered during the early stage of relapse. Correspondingly, increased CD90+ PDL progenitors with suppressed expression of type I collagen (Col-I) were observed upon orthodontic force, whereas these cells accumulated at the degradation regions and regained Col-I expression after force withdrawal during early relapse. Our results further showed that compressive force altered cell morphology and repressed collagen expression in cultured PDL progenitors, which both recovered after force withdrawal. Force withdrawal–induced recovery of collagen expression in cultured PDL progenitors could be regulated by transforming growth factor–β (TGF-β), a key molecule for tissue homeostasis and extracellular matrix remodeling. More interesting, inhibiting the regained Col-I expression in CD90+ PDL progenitors by blocking TGF-β interrupted PDL collagen recovery and partially inhibited the early relapse. These data suggest that PDL progenitors can respond to mechanical force and may process intrinsic stability to recover to original status after force withdrawal. PDL progenitors with intrinsic stability are required for PDL recovery and consequently contribute to early orthodontic relapse, which can be regulated by TGF-β signaling.
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Affiliation(s)
- L. Feng
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China
- Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Beijing, China
| | - R. Yang
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China
- Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Beijing, China
| | - D. Liu
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China
- Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Beijing, China
| | - X. Wang
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China
- Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Beijing, China
| | - Y. Song
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China
- Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Beijing, China
| | - H. Cao
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China
- Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Beijing, China
| | - D. He
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China
- Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Beijing, China
| | - Y. Gan
- Center for Temporomandibular Disorders and Orofacial Pain, Peking University School and Hospital of Stomatology, Beijing, China
- Center Laboratory, Peking University School and Hospital of Stomatology, Beijing, China
| | - X. Kou
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China
- Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Beijing, China
| | - Y. Zhou
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China
- Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Beijing, China
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12
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Xu P, Li X, Tang F, Liu YH, Kou X, Zhao ML, Li B, Guo L, Liu XG, Zhao Q. Seroprevalence and risk factors for Toxoplasma gondii in sheep and goats in Jinzhou, Northeastern China. Trop Biomed 2015; 32:563-567. [PMID: 26695220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In the present study, serum samples from 402 sheep and 216 goats were collected from 5 counties in Jinzhou from August to October 2012 and antibodies to Toxoplasma gondii were detected by modified agglutination test (MAT). Overall, 104 (16.8%) had antibodies to T. gondii with antibody titres of 1:25 to 1:800. Seropositive samples were distributed in all the 5 counties and seroprevalences of T. gondii varied significantly with flock size, age and rearing system, but not with breed, gender and farm location. The seroprevalences in small farms (18.3%, 95/518, 95% confidence interval [CI], 15.0-21.7%) were statistically higher than that in large farms (9%, 9/100, 95% CI, 3.4-14.6%) (P < 0.05), older animals were statistically higher than that in younger animals (P < 0.01). The prevalence in extensively and semi intensively raised samples was statistically higher than that in intensively raised animals (P < 0.01). Small flock size and extensive rearing system are the potential risk factors for the prevalence of Toxoplasma infection in sheep and goats in Jinzhou. This is the first report of T. gondii infection in sheep and goats in Jinzhou, northeastern China, and of an association of seropositivity to T. gondii and the risk factors.
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Affiliation(s)
- P Xu
- College of Animal Husbandry and Veterinary Medicine, Liaoning Medical University, Jinzhou, Liaoning Province 121001, P.R. China
| | - X Li
- Jinzhou Center for Animal Disease Control and Prevention, Jinzhou, Liaoning Province 121004, P.R. China
| | - F Tang
- College of Animal Husbandry and Veterinary Medicine, Liaoning Medical University, Jinzhou, Liaoning Province 121001, P.R. China
| | - Y H Liu
- College of Animal Husbandry and Veterinary Medicine, Liaoning Medical University, Jinzhou, Liaoning Province 121001, P.R. China
| | - X Kou
- College of Animal Husbandry and Veterinary Medicine, Liaoning Medical University, Jinzhou, Liaoning Province 121001, P.R. China
| | - M L Zhao
- College of Animal Husbandry and Veterinary Medicine, Liaoning Medical University, Jinzhou, Liaoning Province 121001, P.R. China
| | - B Li
- College of Animal Husbandry and Veterinary Medicine, Liaoning Medical University, Jinzhou, Liaoning Province 121001, P.R. China
| | - L Guo
- College of Animal Husbandry and Veterinary Medicine, Liaoning Medical University, Jinzhou, Liaoning Province 121001, P.R. China
| | - X G Liu
- College of Animal Husbandry and Veterinary Medicine, Liaoning Medical University, Jinzhou, Liaoning Province 121001, P.R. China
| | - Q Zhao
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin Province 130118, P.R. China
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13
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Abstract
The immune system plays a pivotal role during bone remodeling process. Orthodontic tooth movement (OTM) induces local inflammation in periodontium, but whether systemic immune response is involved in OTM remains unknown. In this study, we show that tooth movement distance was significantly reduced in T-cell-deficient immunocompromised mice compared with wild-type (WT) mice. Intravenous infusion of allogeneic T cells to the immunocompromised mice rescued the OTM distance. Correspondingly, increased numbers of tartrate-resistant acid phosphatase (TRAP)-positive osteoclasts were detected around the alveolar bone after OTM in WT mice but were barely detected in immunocompromised mice. Moreover, intravenous infusion of T cells rescued the number of TRAP-positive osteoclasts in the OTM area of the immunocompromised mice, thus suggesting T cells are required for OTM. We then reveal that OTM induced a significant elevation of type 1 T helper cell (Th1) cytokines tumor necrosis factor-α (TNF-α) and interferon-γ (IFN-γ) around periodontal tissue in WT but not in immunocompromised mice. Infusion of T cells could increase the levels of TNF-α and IFN-γ in periodontal tissues of immunocompromised mice. More interestingly, intraperitoneal injection of TNF-α inhibitor etanercept significantly reduced the distance of OTM in T-cell-infused immunocompromised mice. In summary, this study demonstrates a previously unrecognized mechanism that T cells are required for OTM depending on Th1-associated cytokines.
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Affiliation(s)
- Y Yan
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
| | - F Liu
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
| | - X Kou
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
| | - D Liu
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
| | - R Yang
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
| | - X Wang
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
| | - Y Song
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
| | - D He
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
| | - Y Gan
- Center for Temporomandibular Disorders and Orofacial Pain, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
| | - Y Zhou
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
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14
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Zeng M, Kou X, Yang R, Liu D, Wang X, Song Y, Zhang J, Yan Y, Liu F, He D, Gan Y, Zhou Y. Orthodontic Force Induces Systemic Inflammatory Monocyte Responses. J Dent Res 2015; 94:1295-302. [PMID: 26130260 DOI: 10.1177/0022034515592868] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Periodontal inflammation and alveolar bone remodeling during orthodontic tooth movement are considered regional reactions. However, how systemic immune responses are involved in this regional reaction remains unclear. In this study, we explored the systemic effects of orthodontic force by focusing on the mononuclear phagocyte system. Flow cytometric analysis showed that the percentage of inflammatory monocytes, in peripheral blood and in the monocyte reservoir spleen, decreased on days 1 and 3 and then recovered on day 7 after force application. Along with the systemic decrease of inflammatory monocyte percentage, the number of tartrate-resistant acid phosphatase–positive osteoclasts increased in the compression side of the periodontal tissue during orthodontic tooth movement. Systemic transfusion of enhanced green fluorescent protein–labeled inflammatory monocytes showed recruitment of these monocytes to the orthodontic force compression side of periodontal tissues. These monocytes were colocalized with tartrate-resistant acid phosphatase–positive osteoclasts. In vivo and in vitro experiments showed that orthodontic force could upregulate the expression of pivotal monocyte chemokine monocyte chemotactic protein 1 in periodontal tissues or cultured periodontal ligament cells, which may contribute to monocyte recruitment to regional sites. These data suggest that orthodontic force induces systemic immune responses related to inflammatory monocytes and that systemic inflammatory monocytes can be recruited to periodontal tissues by orthodontic force stimulus.
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Affiliation(s)
- M. Zeng
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
- Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
| | - X. Kou
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
- Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
| | - R. Yang
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
- Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
| | - D. Liu
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
- Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
| | - X. Wang
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
- Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
| | - Y. Song
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
- Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
| | - J. Zhang
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
| | - Y. Yan
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
- Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
| | - F. Liu
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
- Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
| | - D. He
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
- Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
| | - Y. Gan
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
- Center for Temporomandibular Disorders and Orofacial Pain, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
| | - Y. Zhou
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
- Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
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15
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He D, Kou X, Yang R, Liu D, Wang X, Luo Q, Song Y, Liu F, Yan Y, Gan Y, Zhou Y. M1-like Macrophage Polarization Promotes Orthodontic Tooth Movement. J Dent Res 2015; 94:1286-94. [PMID: 26124217 DOI: 10.1177/0022034515589714] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Macrophages play a crucial role in inflammatory-mediated bone loss. Orthodontic tooth movement (OTM) is associated with inflammatory bone remodeling. However, whether and how macrophages contribute to mechanical force–induced OTM remains unknown. In this study, we hypothesized that polarization of M1-like macrophages may contribute to the OTM. Orthodontic nickel-titanium springs were applied to the upper first molars of rats or mice to induce OTM. The distance of OTM gradually increased after mechanical force was applied to the rats for 5 and 10 d. M1-like macrophage polarization and expression of M1 cytokine tumor necrosis factor (TNF)-α also increased after force application. More importantly, monocyte/macrophage depletion in mice by injection of clodronate liposomes decreased the distance of OTM and the number of tartrate-resistant acid phosphatase (TRAP)–positive osteoclasts and CD68+ macrophages, accompanied by reduced expressions of M1 markers TNF-α and inducible nitric oxide synthase (iNOS), whereas systemic transfusion of M1 macrophages in mice increased them. Further experiments showed that injection of recombinant TNF-α increased the distance of OTM and the number of TRAP-positive osteoclasts and CD68+ macrophages, as well as upregulated the expression of TNF-α and iNOS. Blockage of TNF-α by etanercept injection reduced the distance of OTM and the number of TRAP-positive osteoclasts and CD68+ macrophages, as well as decreased the levels of TNF-α and iNOS. These data suggest that M1-like macrophage polarization promotes alveolar bone resorption and consequent OTM after mechanical force application.
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Affiliation(s)
- D. He
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, P.R. China
- Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Beijing, P.R. China
| | - X. Kou
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, P.R. China
- Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Beijing, P.R. China
| | - R. Yang
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, P.R. China
- Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Beijing, P.R. China
| | - D. Liu
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, P.R. China
- Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Beijing, P.R. China
| | - X. Wang
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, P.R. China
- Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Beijing, P.R. China
| | - Q. Luo
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, P.R. China
- Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Beijing, P.R. China
| | - Y. Song
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, P.R. China
- Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Beijing, P.R. China
| | - F. Liu
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, P.R. China
- Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Beijing, P.R. China
| | - Y. Yan
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, P.R. China
- Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Beijing, P.R. China
| | - Y. Gan
- Center for Temporomandibular Disorders and Orofacial Pain, Peking University School and Hospital of Stomatology, Beijing, P.R. China
| | - Y. Zhou
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, P.R. China
- Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Beijing, P.R. China
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16
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He D, Kou X, Luo Q, Yang R, Liu D, Wang X, Song Y, Cao H, Zeng M, Gan Y, Zhou Y. Enhanced M1/M2 macrophage ratio promotes orthodontic root resorption. J Dent Res 2014; 94:129-39. [PMID: 25344334 DOI: 10.1177/0022034514553817] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Mechanical force-induced orthodontic root resorption is a major clinical challenge in orthodontic treatment. Macrophages play an important role in orthodontic root resorption, but the underlying mechanism remains unclear. In this study, we examined the mechanism by which the ratio of M1 to M2 macrophage polarization affects root resorption during orthodontic tooth movement. Root resorption occurred when nickel-titanium coil springs were applied on the upper first molars of rats for 3 to 14 d. Positively stained odontoclasts or osteoclasts with tartrate-resistant acid phosphatase were found in resorption areas. Meanwhile, M1-like macrophages positive for CD68 and inducible nitric oxide synthase (iNOS) persistently accumulated on the compression side of periodontal tissues. In addition, the expressions of the M1 activator interferon-γ and the M1-associated pro-inflammatory cytokine tumor necrosis factor (TNF)-α were upregulated on the compression side of periodontal tissues. When the coil springs were removed at the 14th day after orthodontic force application, root resorption was partially rescued. The number of CD68(+)CD163(+) M2-like macrophages gradually increased on the compression side of periodontal tissues. The levels of M2 activator interleukin (IL)-4 and the M2-associated anti-inflammatory cytokine IL-10 also increased. Systemic injection of the TNF-α inhibitor etanercept or IL-4 attenuated the severity of root resorption and decreased the ratio of M1 to M2 macrophages. These data imply that the balance between M1 and M2 macrophages affects orthodontic root resorption. Root resorption was aggravated by an enhanced M1/M2 ratio but was partially rescued by a reduced M1/M2 ratio.
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Affiliation(s)
- D He
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
| | - X Kou
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
| | - Q Luo
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
| | - R Yang
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
| | - D Liu
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
| | - X Wang
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
| | - Y Song
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
| | - H Cao
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
| | - M Zeng
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
| | - Y Gan
- Center for Temporomandibular Disorders and Orofacial Pain, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
| | - Y Zhou
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P.R. China
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17
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Cao H, Kou X, Yang R, Liu D, Wang X, Song Y, Feng L, He D, Gan Y, Zhou Y. Force-induced Adrb2 in periodontal ligament cells promotes tooth movement. J Dent Res 2014; 93:1163-9. [PMID: 25252876 DOI: 10.1177/0022034514551769] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
The sympathetic nervous system (SNS) regulates bone resorption through β-2 adrenergic receptor (Adrb2). In orthodontic tooth movement (OTM), mechanical force induces and regulates alveolar bone remodeling. Compressive force-associated osteoclast differentiation and alveolar bone resorption are the rate-limiting steps of tooth movement. However, whether mechanical force can activate Adrb2 and thus contribute to OTM remains unknown. In this study, orthodontic nickel-titanium springs were applied to the upper first molars of rats and Adrb1/2(-/-) mice to confirm the role of SNS and Adrb2 in OTM. The results showed that blockage of SNS activity in the jawbones of rats by means of superior cervical ganglion ectomy reduced OTM distance from 860 to 540 μm after 14 d of force application. In addition, the injection of nonselective Adrb2 agonist isoproterenol activated the downstream signaling of SNS to accelerate OTM from 300 to 540 μm after 7 d of force application. Adrb1/2(-/-) mice showed significantly reduced OTM distance (19.5 μm) compared with the wild-type mice (107.6 μm) after 7 d of force application. Histopathologic analysis showed that the number of Adrb2-positive cells increased in the compressive region of periodontal ligament after orthodontic force was applied on rats. Mechanistically, mechanical compressive force upregulated Adrb2 expression in primary-cultured human periodontal ligament cells (PDLCs) through the elevation of intracellular Ca(2+) concentration. Activation of Adrb2 in PDLCs increased the RANKL/OPG ratio and promoted the peripheral blood mononuclear cell differentiation to osteoclasts in the cocultured system. Upregulation of Adrb2 in PDLCs promoted osteoclastogenesis, which accelerated OTM through Adrb2-enhanced bone resorption. In summary, this study suggests that mechanical force-induced Adrb2 activation in PDLCs contributes to SNS-regulated OTM.
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Affiliation(s)
- H Cao
- Department of Orthodontics Center for Craniofacial Stem Cell Research and Regeneration
| | - X Kou
- Department of Orthodontics Center for Craniofacial Stem Cell Research and Regeneration
| | - R Yang
- Department of Orthodontics Center for Craniofacial Stem Cell Research and Regeneration
| | - D Liu
- Department of Orthodontics Center for Craniofacial Stem Cell Research and Regeneration
| | - X Wang
- Department of Orthodontics Center for Craniofacial Stem Cell Research and Regeneration
| | - Y Song
- Department of Orthodontics Center for Craniofacial Stem Cell Research and Regeneration
| | - L Feng
- Department of Orthodontics Center for Craniofacial Stem Cell Research and Regeneration
| | - D He
- Department of Orthodontics Center for Craniofacial Stem Cell Research and Regeneration
| | - Y Gan
- Center for Temporomandibular Disorders and Orofacial Pain, Peking University School and Hospital of Stomatology, Beijing, China
| | - Y Zhou
- Department of Orthodontics Center for Craniofacial Stem Cell Research and Regeneration
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18
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Xue L, Wu Q, Kou X, Zhang J, Guo W. A simple and novel method for GII norovirus genome clone with generic primers. J Appl Microbiol 2013; 115:613-20. [PMID: 23647661 DOI: 10.1111/jam.12244] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2013] [Revised: 04/14/2013] [Accepted: 05/02/2013] [Indexed: 12/26/2022]
Abstract
AIMS This study aims to establish a novel method for cloning GII norovirus genome using generic primers rationally designed based on multiple alignments of 96 GII norovirus genome sequences. METHODS AND RESULTS Based on conservative analysis of 96 GII norovirus genome sequences available in GenBank, three fragments encompassing the full-length genome were rationally designed. Fragments A, B and C were amplified by primers N1F/N2819R, N2689F/COG2R and COG2F/adaptor, respectively. Meanwhile, the sensitivity of the novel primers was evaluated, which could achieve 10(1) RTPCRU, as determined by the common detection primer pair JV12/JV13. The availability of the novel protocol was verified by sequencing two norovirus strains with different genotypes. CONCLUSIONS Primers for GII norovirus genome clone were rationally designed, and a novel GII genome clone method was established. SIGNIFICANCE AND IMPACT OF THE STUDY The three-fragment cloning method can be used as a universal tool to collect information on the genome of norovirus strains for future evolution and antivirus studies.
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Affiliation(s)
- L Xue
- School of Bioscience and Bioengineering, South China University of Technology, Guangzhou, Guangdong, China
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Yao L, Wu Q, Wang D, Kou X, Zhang J. Development of monoclonal antibody-coated immunomagnetic beads for separation and detection of norovirus (genogroup II) in faecal extract samples. Lett Appl Microbiol 2009; 49:173-8. [PMID: 19453950 DOI: 10.1111/j.1472-765x.2009.02638.x] [Citation(s) in RCA: 17] [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: 11/29/2022]
Abstract
AIMS The aim of this study is to develop an RT-PCR assay combined with immunomagnetic beads (IMS/RT-PCR) coating monoclonal antibody (Mab) for separation and detection of norovirus (genogroup II) in faecal samples. We furthermore compare its detection limits with IMS/RT-PCR using polyclonal antibody (Pab) and the TRIzol extraction method followed by RT-PCR (TRIzol-RT-PCR). METHODS AND RESULTS Mab-coated beads and Pab-coated beads were added to a series of tenfold dilutions of faecal extract containing norovirus in 1 ml PBS. After incubation and collection, the RNA was released by heating from virus separated by beads. The tenfold dilutions of faecal were also extracted with TRIzol reagent. The RNA was used as the template for RT-PCR detection (primers: JV12-JV13). IMS/RT-PCR using Mab showed an endpoint in the 10(-7) dilution and was 10(2) times more sensitive than IMS/RT-PCR using Pab and was at least 10(3) times more sensitive than TRIzol-RT-PCR method. CONCLUSIONS IMS/RT-PCR using Mab proved to be a more sensitive method of noroviruses (NVs) detection than IMS/RT-PCR using Pab and the TRIzol-RT-PCR method. SIGNIFICANCE AND IMPACT OF THE STUDY This is the first study to detect NVs with IMS/RT-PCR using Mab, and could serve as a model for future assays when broadly reactive NVs-specific Mabs are developed.
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Affiliation(s)
- L Yao
- Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
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21
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Zhang Y, Xue H, Kou X, Wang G. [Study on the inclusions of xindonin A-beta-cyclodextrin and xindonin B-beta-cyclodextrin]. Zhong Yao Cai 2001; 24:131-2. [PMID: 11402732] [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: 02/20/2023]
Abstract
The inclusions compounds of Xindonin A-beta-cyclodextrin and Xindonin B-beta-cyclodextrin were prepared by the liquid-phase method in aqueous solution. They were confirmed by thin layer chromatography, differential thermal analysis and specific rotation. Changes of ultraviolet spectrum were determined. The composition ratios of inclusion compounds were obtained by the continuous variation method. Solubility of the inclusions were determined.
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Affiliation(s)
- Y Zhang
- Henan Medical University, 450052
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Kou X, Xu J. Factors influencing the synthesis of monoester and diester from polyethylene glycol400 and oleic acid by lipase. Chin J Biotechnol 2000; 15:171-5. [PMID: 10935164] [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: 02/17/2023]
Abstract
Factors influencing the synthesis of mono- and diester of polyethylene glycol400 (PEG400) oleate with immobilized lipase from Candida sp.1619 as biocatalyst were investigated. Mono- and diester were formed with different molar ratios of the substrates after reacting for 6 hours. The amount of monoester to diester formed was in the range of 3.5:1 to 4.1:1 when the molar ratio of acid to PEG400 was 0.25:1 to 2:1. Almost equal amounts of mono- and diesters were produced when the molar ratio of acid to PEG400 was 3:1 to 8:1. When the equilibrium of reaction was reached (22 hours), only diester was found in the reaction mixture with different molar ratio of substrates. The amount of monoester to diester was 1:3.2 in the reaction system containing hexane, even the molar ratio of acid to PEG400 was 2:1.
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Affiliation(s)
- X Kou
- Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
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Kou X, Xu J. [Enzymatic synthesis of saccharide and saccharide alcohol fatty acid esters]. Wei Sheng Wu Xue Bao 2000; 40:193-7. [PMID: 12548944] [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: 02/28/2023]
Abstract
Conditions for esterification in tert-butanol using fatty acid as acy1 donor and saccharides or saccharide alcohols as acy1 acceptors, immobilized lipase from Candida sp. 1619 as biocatalyst were investigated. Optimal temperature and pH for esterication were 40 degrees C-45 degrees C and 5.5-7.5, respectively. Among the 13 acy1 donors compared, the best ones are the linoleic acid and oleic acid. The similar conversion degree was obtained when using saturated fatty acids with carbon chain length from C8 to C22. Among the 23 saccharides and saccharide alcohols compared, D-fructose, D-Xylose, trehalose, D-sorbitol, xylitol, mannitol isopropyidoneglucofruranose and alpha-methylglucopyranoside showed much higher esterification degree than other acy1 acceptors. In addition, the reaction degree of saccharide alcohols were substantially higher than that of the corresponding saccharides. The conversion was enhanced greatly when the molar ratio of acy1 donor to acy1 acceptor was higher than 2 to 1. In the case of using sorbitol and loeic acid as substrates, the reaction was carried out in 100 ml conical flask and the reaction system consisted of 3.0 mmol oleic acid(0.85 g), 0.2 mmol sorbitol(0.036 g), 3 mL tert-butanol, 30 mg immobilized lipase(600 u), shaken at 40 degrees C. After reaction for 48 h, more than 90% of sorbitol was esterified based on equal molar of substrates. The products were identified TLC as monoester and diester.
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Affiliation(s)
- X Kou
- Institute of Microbiology, Chinese Academy of Sciences, Beijing 100080
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Zhang Y, Kou X, Lu J, Wang G. [Study on the inclusion of oridonin-beta-cyclodextrin]. Zhong Yao Cai 1999; 22:204-5. [PMID: 12575108] [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: 02/28/2023]
Abstract
The inclusion compound of Oridonin-beta-cyclodextrin was prepared by the liquid-phase method in aqueous solution. And it was confirmed by thin layer chromatography, differential thermal analysis and specific rotation. The change (A) of ultraviolet spectrum was determined. The composition ratio of inclusion compound between Oridonin and beta-CD was obtained by the continuous variation method.
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Affiliation(s)
- Y Zhang
- Henan Medical University, 450052
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Zhou JZ, Kou X, Stevenson D. Rapid extraction and high-performance liquid chromatographic determination of parthenolide in feverfew (Tanacetum parthenium). J Agric Food Chem 1999; 47:1018-1022. [PMID: 10552409 DOI: 10.1021/jf980798u] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
A rapid and sensitive method for quantifying parthenolide in feverfew herb (Tanacetum parthenium) was developed that is significantly faster than those reported in the literature. The extraction system consisted of acetonitrile/water (90:10, v/v) in a bottle with stirring for 30 min. Both Soxhlet and bottle-stirring extractions were studied. Samples were analyzed using high-performance liquid chromatography with a Cosmosil C18-AR column (150 x 4.6 mm, 5 microm, 120 A). The mobile phase consisted of acetonitrile/water (55:45, v/v) with a flow rate of 1.5 mL/min and UV detection at 210 nm. Analysis time was 6 min, with a detection limit of 0.10 ng on column. The calibration curve was linear over a range of 0.160-850 microg/mL parthenolide with R(2) = 0.9999. Replicate tests indicated good reproducibility of the method with an RSD% = 0.88 (n = 10). Spike recovery of parthenolide was found to be 99.3% with an RSD% = 1.6 (n = 6).
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Affiliation(s)
- J Z Zhou
- Department of Research and Development, Nature's Sunshine Products, Inc., 1655 North Main Street, Spanish Fork, Utah 84660, USA.
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Zhang Y, Lu J, Zhao Q, Kou X. [Study on the inclusion of isodoniol-beta-cyclodextrin]. Zhong Yao Cai 1998; 21:250-1. [PMID: 12567960] [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: 02/28/2023]
Abstract
The inclusion compound of isodoniol-beta-cyclodextrin was prepared by the liquidphase method in aqueous solution. And it was confirmed by thinlayer chromatography, differentical thermal analysis and specific rotation. The change (delta A) of ultraviolet spectrum was determined. The composition ratio of the inclusion compound between isodoniol and beta-CD was obtained by the continuous variation method.
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Affiliation(s)
- Y Zhang
- Henan Medical University, 450052
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Kou X, Xu J. Polyethylene glycol400 laurate synthesized by immobilized lipase in a solvent-free system. Chin J Biotechnol 1997; 13:201-206. [PMID: 9429782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Conditions for the esterification of polyethylene glycol400 (PEG400) with lauric acid by immobilized lipase from Candida sp. 1619 in a solvent-free system were investigated. The esterification degree was increased greatly through the dehydration that occurred during the reaction. When the amount of lauric acid added exceeded the stoichiometric amount the yield of product was further improved by fed-batch feeding of PEG400. In the reaction system that was composed of 5.0 mmol of lauric acid, 2.5 mmol of PEG400, 20 mg of immobilized lipase (200 u), 0.2 ml of water, at 40 degrees C shaken for 48 h in a 100-ml conical flask without a plug, the esterification degree of 98.9% was reached. When the amount of lauric acid used was increased to 60 mmol, the PEG400 in reaction system was completely esterified. The recovery yield of product was 95% by hexane extraction and the product was identified as diester by means of TLC.
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Affiliation(s)
- X Kou
- Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
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Bordunov AV, Dalley NK, Kou X, Bradshaw JS, Pastushok VN. Efficient syntheses and crystal structures of new benzene-containing cryptands. J Heterocycl Chem 1996. [DOI: 10.1002/jhet.5570330363] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Kou X, Li Q. [The preparation and properties of catechol-1,2-dioxygenase from Pseudomonas putida]. Wei Sheng Wu Xue Bao 1990; 30:397-9. [PMID: 2251833] [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: 12/31/2022]
Abstract
Catechol-1,2-dioxygenase (EC 1.13.11.1) catalyzes the degradation of catechol to cis, cis-muconic acid. The biochemical properties of catechol-1,2-dioxygenase from Pseudomonas putida 84103 were investigated. The optimum pH and temperature is 7.5-8.0 and 25-30 degrees C, respectively. Cu2+, Zn2+ inhibit the enzyme activity. The paper chromatograph and UV absorption spectrum of enzymatic reaction product are accordance with those of the standard muconic acid.
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Affiliation(s)
- X Kou
- Institute of Microbiology, Academia Sinica, Beijing
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