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Zhang H, Zhang H, Wang JW, Gao JH, Wen Y, Li XK, Ren ZR. [Effect of Thermal Hydrolysis Pretreatment Time on Microbial Community Structure in Sludge Anaerobic Digestion System]. Huan Jing Ke Xue 2024; 45:2741-2747. [PMID: 38629537 DOI: 10.13227/j.hjkx.202305030] [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] [Subscribe] [Scholar Register] [Indexed: 04/19/2024]
Abstract
To evaluate the effect of thermal hydrolysis pretreatment time on the sludge anaerobic digestion system of wastewater treatment plants (WWTPs) in Daxing district, Beijing, the structure and diversity of microbial communities in primary sludge and an activated sludge anaerobic digestion system with different thermal hydrolysis pretreatment times (15 min, 30 min, and 45 min) were analyzed using Illumina MiSeq high-throughput sequencing. The results showed that the dominant groups of digested sludge were mainly distributed in Firmicutes, Cloacimonadota, Chloroflexi, and Synergistota, with W5 being the most common genus. The sum of relative abundance of the dominant phylum was greater than 60%, and W5 accounted for 20.8%-54.5%, showing a high abundance of a few dominant species. During the anaerobic digestion of thermo-hydrolyzed sludge, the relative abundance of acetogenic methanogens decreased due to high levels of volatile fatty acids (VFAs) and ammonia nitrogen (NH4+-N) concentrations, which suggested that the hydrogenophilic methanogenic pathway was more than that of the acetogenic methanogenic pathway. Correlation analysis showed that the soluble protein and pH of thermo-hydrolyzed sludge, NH4+-N of digested sludge, and thermal hydrolysis pretreatment time were the four main environmental factors affecting microbial community structure, and NH4+-N of digested sludge had the largest negative correlation with methanogens. The thermal hydrolysis pretreatment time was negatively correlated with both the Chao index and Shannon index, so longer thermal hydrolysis pretreatment time was not conducive to microbial flora during anaerobic digestion.
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Affiliation(s)
- Han Zhang
- Research and Development Center of Beijing Drainage Group Technology, Beijing 100124, China
- Beijing Wastewater Resourceful Engineering Technology Research Center, Beijing 100124, China
| | - Han Zhang
- School of Civil Engineering and Transportation, Hebei University of Technology, Tianjin 300401, China
| | - Jia-Wei Wang
- Research and Development Center of Beijing Drainage Group Technology, Beijing 100124, China
- Beijing Wastewater Resourceful Engineering Technology Research Center, Beijing 100124, China
| | - Jin-Hua Gao
- Research and Development Center of Beijing Drainage Group Technology, Beijing 100124, China
- Beijing Wastewater Resourceful Engineering Technology Research Center, Beijing 100124, China
| | - Yang Wen
- Research and Development Center of Beijing Drainage Group Technology, Beijing 100124, China
- Beijing Wastewater Resourceful Engineering Technology Research Center, Beijing 100124, China
| | - Xiang-Kun Li
- School of Civil Engineering and Transportation, Hebei University of Technology, Tianjin 300401, China
| | - Zheng-Ran Ren
- Research and Development Center of Beijing Drainage Group Technology, Beijing 100124, China
- Beijing Wastewater Resourceful Engineering Technology Research Center, Beijing 100124, China
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Lai JL, Liu SP, Jiang XX, Liu J, Li A, Li B, Li XK, Ye XJ, Lei KJ, Zhou L. Can Optical Surface Imaging Replace Non-coplanar Cone-beam Computed Tomography for Non-coplanar Set-up Verification in Single-isocentre Non-coplanar Stereotactic Radiosurgery and Hypofractionated Stereotactic Radiotherapy for Single and Multiple Brain Metastases? Clin Oncol (R Coll Radiol) 2023; 35:e657-e665. [PMID: 37778972 DOI: 10.1016/j.clon.2023.09.007] [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: 03/30/2023] [Revised: 08/03/2023] [Accepted: 09/18/2023] [Indexed: 10/03/2023]
Abstract
AIMS To conduct a direct comparison regarding the non-coplanar positioning accuracy between the optical surface imaging system Catalyst HDTM and non-coplanar cone-beam computed tomography (NC-CBCT) in intracranial single-isocentre non-coplanar stereotactic radiosurgery (SRS) and hypofractionated stereotactic radiotherapy (HSRT). MATERIALS AND METHODS Twenty patients with between one and five brain metastases who underwent single-isocentre non-coplanar volumetric modulated arc therapy (NC-VMAT) SRS or HSRT were enrolled in this study. For each non-zero couch angle, both Catalyst HDTM and NC-CBCT were used for set-up verification prior to beam delivery. The set-up error reported by Catalyst HDTM was compared with the set-up error derived from NC-CBCT, which was defined as the gold standard. Additionally, the dose delivery accuracy of each non-coplanar field after using Catalyst HDTM and NC-CBCT for set-up correction was measured with SRS MapCHECKTM. RESULTS The median set-up error differences (absolute values) between the two positioning methods were 0.30 mm, 0.40 mm, 0.50 mm, 0.15°, 0.10° and 0.10° in the vertical, longitudinal, lateral, yaw, pitch and roll directions, respectively. The largest absolute set-up error differences regarding translation and rotation were 1.5 mm and 1.1°, which occurred in the longitudinal and yaw directions, respectively. Only 35.71% of the pairs of measurements were within the tolerance of 0.5 mm and 0.5° simultaneously. In addition, the non-coplanar field with NC-CBCT correction yielded a higher gamma passing rate than that with Catalyst HDTM correction (P < 0.05), especially for evaluation criteria of 1%/1 mm with a median increase of 12.8%. CONCLUSIONS Catalyst HDTM may not replace NC-CBCT for non-coplanar set-up corrections in single-isocentre NC-VMAT SRS and HSRT for single and multiple brain metastases. The potential role of Catalyst HDTM in intracranial SRS/HSRT needs to be further studied in the future.
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Affiliation(s)
- J L Lai
- Radiotherapy Physics & Technology Center, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - S P Liu
- Radiotherapy Physics & Technology Center, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - X X Jiang
- Radiotherapy Physics & Technology Center, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - J Liu
- Department of Oncology, Chengdu First People's Hospital, Chengdu, Sichuan, China
| | - A Li
- Radiotherapy Physics & Technology Center, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - B Li
- Radiotherapy Physics & Technology Center, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - X K Li
- West China Clinical Medical College of Sichuan University, Chengdu, Sichuan, China
| | - X J Ye
- Department of Oncology, Yibin Second People's Hospital, Yibin, Sichuan, China
| | - K J Lei
- Department of Oncology, Yibin Second People's Hospital, Yibin, Sichuan, China
| | - L Zhou
- Thoracic Oncology Ward, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China.
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Li XK, Yang HJ, Du SH, Zhang B, Li LY, Li SN, Liu CC, Ma Y, Yu JB. 4-Octyl itaconate alleviates renal ischemia reperfusion injury by ameliorating endoplasmic reticulum stress via Nrf2 pathway. Exp Biol Med (Maywood) 2023; 248:2408-2420. [PMID: 38158612 PMCID: PMC10903237 DOI: 10.1177/15353702231214255] [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: 05/07/2023] [Accepted: 09/03/2023] [Indexed: 01/03/2024] Open
Abstract
Renal ischemia-reperfusion injury (IRI) is a common clinical complication of multiple severe diseases. Owing to its high mortality and the lack of effective treatment, renal IRI is still an intractable problem for clinicians. Itaconate, which is a metabolite of cis-aconitate, can exert anti-inflammatory and antioxidant roles in many diseases. As a derivative of itaconate with high cell membrane permeability, 4-octyl itaconate (4-OI) could provide a protective effect for various diseases. However, the role of 4-OI in renal IRI is still unclear. Herein, we examined whether 4-OI afforded kidney protection through attenuating endoplasmic reticulum stress (ERS) via nuclear factor erythroid-2-related factor 2 (Nrf2) pathway. To observe the effects of 4-OI on alleviating renal pathologic injury, improving renal dysfunction, decreasing inflammatory cytokines, and reducing oxidative stress, we utilized C57BL/6J mice with bilateral renal pedicle clamped and HK-2 cells with hypoxia/reoxygenation (H/R) exposure in our study. In addition, through western blot assay, we found 4-OI ameliorated renal IRI-induced ERS, and activated Nrf2 pathway. Moreover, Nrf2-knockout (KO) mice and Nrf2 knockdown HK-2 cells were used to validate the role of Nrf2 signaling pathway in 4-OI-mediated alleviation of ERS caused by renal IRI. We demonstrated that 4-OI relieved renal injury and suppressed ERS in wild-type mice, while the therapeutic role was not shown in Nrf2-KO mice. Similarly, 4-OI could exert cytoprotective effect and inhibit ERS in HK-2 cells after H/R, but not in Nrf2 knockdown cells. Our in vivo and in vitro studies revealed that 4-OI protected renal IRI through attenuating ERS via Nrf2 pathway.
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Affiliation(s)
- Xiang-Kun Li
- Department of Anesthesiology and Critical Care Medicine, Tianjin Nankai Hospital, Tianjin Medical University, Tianjin 300100, China
- Department of Anesthesiology, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Hong-Juan Yang
- Department of Anesthesiology, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Shi-Han Du
- Department of Anesthesiology and Critical Care Medicine, Tianjin Nankai Hospital, Tianjin Medical University, Tianjin 300100, China
| | - Bing Zhang
- Department of Anesthesiology, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Ling-Yu Li
- Department of Anesthesiology, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Shao-Na Li
- Department of Anesthesiology, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Cui-Cui Liu
- Department of Anesthesiology, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Yang Ma
- Department of Anesthesiology and Critical Care Medicine, Tianjin Nankai Hospital, Tianjin Medical University, Tianjin 300100, China
| | - Jian-Bo Yu
- Department of Anesthesiology and Critical Care Medicine, Tianjin Nankai Hospital, Tianjin Medical University, Tianjin 300100, China
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Zhang TY, Sun X, Yao YH, Jin Q, Gan DN, Ye YA, Li XK. [Update points for the 2022 edition of the European Association for the Study of Liver Diseases Clinical Practice Guidelines for the Management of Hepatic Encephalopathy and comparison with China's 2018 edition guidelines]. Zhonghua Gan Zang Bing Za Zhi 2023; 31:921-927. [PMID: 37872087 DOI: 10.3760/cma.j.cn501113-20221111-00560] [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] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
The European Association for the Study of Liver Diseases issued the "Clinical Practice Guidelines for the Management of Hepatic Encephalopathy" in 2022, which included recommendations for clinical diagnosis, assessment, treatment, management, and prevention. The Society's "Hepatic Encephalopathy Clinical Practice Guidelines in Chronic Liver Disease," which was last published in 2014, and the "Guidelines for the Diagnosis and Treatment of Hepatic Encephalopathy in Cirrhosis," which the Chinese Society of Hepatology, Chinese Medical Association, released in 2018, have certain differences and updates in terms of comparison to terminology, grading and classification, diagnosis, clinical evaluation and treatment, management, and prevention. Herein, the updated points of this guideline and the differences between it and our nation's guidelines are summarized in order to refine and understand the guiding role of the new version of the guideline for the clinical treatment of hepatic encephalopathy and provide aid for standardizing clinical diagnosis and treatment.
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Affiliation(s)
- T Y Zhang
- Department of Gastroenterology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing 100700, China
| | - X Sun
- Department of Gastroenterology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing 100700, China
| | - Y H Yao
- Department of Gastroenterology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing 100700, China
| | - Q Jin
- Department of Gastroenterology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing 100700, China
| | - D N Gan
- Department of Gastroenterology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing 100700, China Liver Diseases Academy of TCM, Beijing University of Chinese Medicine, Beijing 100700, China
| | - Y A Ye
- Department of Gastroenterology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing 100700, China Liver Diseases Academy of TCM, Beijing University of Chinese Medicine, Beijing 100700, China
| | - X K Li
- Department of Gastroenterology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing 100700, China Liver Diseases Academy of TCM, Beijing University of Chinese Medicine, Beijing 100700, China
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Ma XC, Wang K, Gao XL, Li XK, Liu GG, Chen HY, Piao CY, You SJ. Deciphering the fate of osmotic stress priming on enhanced microorganism acclimation for purified terephthalic acid wastewater treatment with high salinity and organic load. Bioresour Technol 2023; 374:128656. [PMID: 36690216 DOI: 10.1016/j.biortech.2023.128656] [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] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 01/16/2023] [Accepted: 01/18/2023] [Indexed: 06/17/2023]
Abstract
Osmotic stress priming (OSP) was an effective management strategy for improving microbial acclimation to salt stress. In this study, the interaction between pollutants and microbiota, and microbial osmoregulation were investigated triggered by OSP (alternately increasing salinity and organic loading). Results showed that OSP significantly improved COD removal from 31.53 % to 67.99 % and mitigated the terephthalate inhibition produced by toluate, decreasing from 1908.08 mg/L to 837.16 mg/L compared with direct priming. Due to an increase in salinity, Pelotomaculum and Mesotoga were enriched to facilitate terephthalate degradation and syntrophic acetate oxidation (SAO). And organic load promoted acetate formation through syntrophic metabolism of Syntrophorhabdus/Pelotomaculum and SAO-dependent hydrogenotrophic methanogenesis. K+ absorbing, proline and trehalose synthesis participated in osmoregulation at 0.5 % salinity, while only ectoine alleviated intracellular osmolarity under 1.0 % salinity with OLR of 0.44 kg COD /m3. This study provided in-depth insight for microbial acclimation process of anaerobic priming of saline wastewater.
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Affiliation(s)
- Xiao-Chen Ma
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Ke Wang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China; National Engineering Research Center for Safe Sludge Disposal and Resource Recovery, Harbin Institute of Technology, Harbin 150090, China; Harbin Institute of Technology National Engineering Research Center of Water Resources Co., Ltd, Guangdong Yuehai Water Investment Co., Ltd, Harbin 150090, China
| | - Xin-Lei Gao
- Harbin Institute of Technology National Engineering Research Center of Water Resources Co., Ltd, Guangdong Yuehai Water Investment Co., Ltd, Harbin 150090, China
| | - Xiang-Kun Li
- School of Civil and Transportation, Hebei University of Technology, Tianjin 300401, China.
| | - Gai-Ge Liu
- School of Civil and Transportation, Hebei University of Technology, Tianjin 300401, China
| | - Hong-Ying Chen
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Chen-Yu Piao
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Shi-Jie You
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
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Ma XC, Wang K, Gao XL, Li XK, Liu GG, Chen HY, Piao CY, You SJ. Temperature-regulated and starvation-induced refractory para-toluic acid anaerobic biotransformation. Chemosphere 2023; 311:137008. [PMID: 36377119 DOI: 10.1016/j.chemosphere.2022.137008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 10/04/2022] [Accepted: 10/23/2022] [Indexed: 06/16/2023]
Abstract
Little research was focused on the anerobic degradation of refractory para-toluic acid at present. Thus, temperature-regulated anaerobic system of para-toluic acid fed as sole substrate was built and investigated via microbiota, metabolism intermediates, and function prediction in this study. Results showed that low methane yield was produced in para-toluic acid anaerobic system at alkaline condition. And the causes were owing to anaerobic methane oxidation and potentially H2S production at 37 °C, N2 production by denitrification before starvation and propionic acid occurrence after starvation at 27 °C, and production of N2 and free ammonia, and accumulation of acetic acid at 52 °C. Simultaneously, hydrogenotrophic methanogenesis dependent on syntrophic acetate oxidation (SAO) was predominant, facilitating the removal of para-toluic acid at 52 °C. Moreover, the key intermediate changed from phthalic acid of 37 °C and 27 °C before starvation to terephthalic acid of 52 °C. Starvation promoted removal of para-toluic acid through benzoyl-CoA pathway by Syntrophorhabdus, enrichment of syntrophic propionate degraders of Bacteroidetes and Ignavibacteriaceae, and increase of methylotrophic methanogens.
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Affiliation(s)
- Xiao-Chen Ma
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Ke Wang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China; National Engineering Research Center for Safe Sludge Disposal and Resource Recovery, Harbin Institute of Technology, Harbin, 150090, China; Harbin Institute of Technology National Engineering Research Center of Water Resources Co., Ltd, Guangdong Yuehai Water Investment Co., Ltd, Harbin, 150090, China.
| | - Xin-Lei Gao
- Harbin Institute of Technology National Engineering Research Center of Water Resources Co., Ltd, Guangdong Yuehai Water Investment Co., Ltd, Harbin, 150090, China
| | - Xiang-Kun Li
- School of Civil and Transportation, Hebei University of Technology, Tianjin, 300401, China.
| | - Gai-Ge Liu
- School of Civil and Transportation, Hebei University of Technology, Tianjin, 300401, China
| | - Hong-Ying Chen
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Chen-Yu Piao
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Shi-Jie You
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
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Chen HY, Li XK, Meng L, Liu G, Ma X, Piao C, Wang K. The fate and behavior mechanism of antibiotic resistance genes and microbial communities in anaerobic reactors treating oxytetracycline manufacturing wastewater. J Hazard Mater 2022; 424:127352. [PMID: 34740157 DOI: 10.1016/j.jhazmat.2021.127352] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [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: 05/19/2021] [Revised: 09/18/2021] [Accepted: 09/23/2021] [Indexed: 06/13/2023]
Abstract
In this study, two parallel-operated expanded granular sludge bed (EGSB) reactors, one used to treat oxytetracycline (OTC) manufacturing wastewater with gradual increase of OTC concentration as experimental reactor and the other fed with the same wastewater without OTC as control reactor, were operated to investigate the behavior of antibiotics resistance genes (ARGs) and mobile genetic elements (MGEs) and their possible relationships with bacterial community among influent, sludge and effluent environments. Though the average absolute abundance of ARGs slightly decreased (0.26 - log), the ARGs' relative abundance normalized to 16S-rRNA gene copy numbers showed a significant upward trend in effluent (2 multiples - increase) and the absolute and relative abundances both extremely increased in anaerobic sludge, indicating that anaerobic treatment process cannot reduce ARGs efficiently, inversely can increase the risk of ARGs through the proliferation of antibiotics resistance bacteria (ARB) under the suppression of OTC. MGEs, bacterial communities and OTC concentration mainly impacted the ARGs profiles, which contributed 88.4% to the variation of ARGs. The differences and correlations of hosts in influent, effluent and sludge were further confirmed by network analysis. Overall, this study enhanced the understanding of the prevalence and transfer of ARGs in OTC production effluents during anaerobic treatment.
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Affiliation(s)
- Hong-Ying Chen
- School of Environment, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Xiang-Kun Li
- School of Civil and Transportation, Hebei University of Technology, Tianjin 300401, China.
| | - Lingwei Meng
- School of Civil Engineering and Architecture, Northeast Electric Power University, Jilin 132012, China
| | - Gaige Liu
- School of Civil and Transportation, Hebei University of Technology, Tianjin 300401, China
| | - Xiaochen Ma
- School of Environment, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Chenyu Piao
- School of Environment, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Ke Wang
- School of Environment, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
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Fu XB, Li XK. [Establishment of "Chinese way" for trauma and burn management based on the engineered growth factors research and application]. Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi 2022; 38:4-8. [PMID: 35012265 DOI: 10.3760/cma.j.cn501120-20211125-00397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Innovation and translation application are important topics that have been discussed repeatedly in national community of science and technology in recent years. We do a systemic review about the research and development history of growth factors, their application in trauma and burn management in China, and the conception and experience about the establishment of "Chinese way" for trauma and burn management in the process of constructing a disciplinary system for wound treatment with Chinese characteristics. It is our hope that these precious experiences will provide references and inspiration to our peers, especially the young generation in their research.
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Affiliation(s)
- X B Fu
- Research Center for Wound Repair and Tissue Regeneration, Medical Innovation Research Department, the PLA General Hospital, Beijing 100853, China The Key Laboratory of PLA Wound Repair and Tissue Regeneration, the Fourth Medical Center of PLA General Hospital, Beijing 100048, China
| | - X K Li
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China
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Chen H, Liu G, Wang K, Piao C, Ma X, Li XK. Characteristics of microbial community in EGSB system treating with oxytetracycline production wastewater. J Environ Manage 2021; 295:113055. [PMID: 34198178 DOI: 10.1016/j.jenvman.2021.113055] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Revised: 06/02/2021] [Accepted: 06/08/2021] [Indexed: 06/13/2023]
Abstract
In order to realize the efficient and stable operation of anaerobic digestion for oxytetracycline (OTC) production wastewater which contains high concentration refractory organic matters and antibiotic residues, two laboratory-scale EGSB reactors (the experimental reactor and the control reactor) were constructed for pre-treating OTC production wastewater and the complex characteristics and connections among anaerobic fermentative bacteria, methanogens and fungi were analyzed. The experimental reactor gradually increased OTC doses of 0-200 mg/L by four phases compared with the control reactor which was fed without OTC addition during 280 days' operation. The average COD removal efficiency of 91.44% with the average OTC removal efficiency of 27.90% was achieved at OTC concentration of 200 mg/L. The addition of OTC did not affect the preponderant methanogen type, and Methanosaeta, a strict aceticlastic methanogen genus, was dominant both in working and controlling reactors on day 280. Redundancy analysis revealed that OTC and VFAs were the main environmental factors affecting the microbial communities and molecular ecological networks analysis indicated that the key genera principally belonged to Methanosaeta, Proteobacteria and Apiotrichum. Additionally, the fungi genus Apiotrichum might be related to the degradation of complex organic contaminants in OTC production wastewater treatment system.
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Affiliation(s)
- Hongying Chen
- State Key laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Gaige Liu
- School of Civil and Transportation, Hebei University of Technology, Tianjin, 300401, China
| | - Ke Wang
- State Key laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China.
| | - Chenyu Piao
- State Key laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Xiaochen Ma
- State Key laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Xiang-Kun Li
- School of Civil and Transportation, Hebei University of Technology, Tianjin, 300401, China.
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Li XK. [Seizing the day and living it to the full: thirty years' independent innovation of growth factors and wound repair]. Zhonghua Shao Shang Za Zhi 2020; 36:161-165. [PMID: 32241040 DOI: 10.3760/cma.j.cn501120-20200305-00125] [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] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Since the discovery of fibroblast growth factor (FGF) in the early 20th century, the multiple regulatory function of FGF has been found in development, metabolic regulation and tissue regeneration. Although FGF has the potential in wound healing of clinical practice, several technical bottlenecks occurred in the development of FGF drugs. Since 1992, our team has had many technical breakthroughs and developed some class Ⅰ new drugs of FGF and medical device. At the same time, we further investigated the network of metabolic regulation and signal transduction of FGF. All the efforts were for the purpose of the development of FGF new drugs and bringing benefit to patients.
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Affiliation(s)
- X K Li
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China
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Ma XC, Li XK, Wang XW, Liu GG, Zuo JL, Wang ST, Wang K. Impact of salinity on anaerobic microbial community structure in high organic loading purified terephthalic acid wastewater treatment system. J Hazard Mater 2020; 383:121132. [PMID: 31518813 DOI: 10.1016/j.jhazmat.2019.121132] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2019] [Revised: 08/31/2019] [Accepted: 08/31/2019] [Indexed: 06/10/2023]
Abstract
To investigate the effect of salinity (1% sodium chloride) on anaerobic microbial community structure in high strength telephthalic wastewater treatment system, the performances of anaerobic-aerobic process and the shifts of microbial community in anaerobic tank were studied and determined. Results showed that the chemical oxygen demand (COD) removal in the whole process remained above 90%. And the effluent concentrations of targeted pollutants were lower than 10 mg/L, other than para-toluic acid (PT, 38.09 mg/L). However, methane production significantly decreased compared to no salinity situation. This might be due to the inhibition of salinity on methanogens, which hindered the conversion of acetate to methane. Furthermore, the dominant genus in bacterial level changed from Tepidisphaera to Syntrophus, which facilitated the syntrophic association with hydrogenotrophic methanogens. The prevailed archaea remained acetoclastic Methanothrix above 90%. Therefore, the salinity on anaerobic microbial community structure mainly reflects in the methanogen process, remarkably decreasing methane production.
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Affiliation(s)
- Xiao-Chen Ma
- School of Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Xiang-Kun Li
- School of Environment, Harbin Institute of Technology, Harbin, 150090, China; School of Civil and Transportation, Hebei University of Technology, Tianjin, 300401, China.
| | - Xue-Wei Wang
- Life Science and Environmental Science Research Center, Harbin University of Commerce, Harbin, 150076, China
| | - Gai-Ge Liu
- School of Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Jin-Long Zuo
- School of Food Engineering, Harbin University of Commerce, Harbin, 150076, China
| | - Shu-Tao Wang
- School of Environment, Harbin Institute of Technology, Harbin, 150090, China.
| | - Ke Wang
- School of Environment, Harbin Institute of Technology, Harbin, 150090, China.
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12
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Ma KL, Li XK, Bao LL. Influence of organic loading rate on purified terephthalic acid wastewater treatment in a temperature staged anaerobic treatment (TSAT) system: Performance and metagenomic characteristics. Chemosphere 2019; 220:1091-1099. [PMID: 33395796 DOI: 10.1016/j.chemosphere.2019.01.028] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 01/01/2019] [Accepted: 01/03/2019] [Indexed: 06/12/2023]
Abstract
In this study, a temperature staged anaerobic treatment (TSAT) system featured by thermophilic reactor (R1)-mesophilic reactor (R2) co-digestion was introduced to treat PTA wastewater. The process was successively conducted at three organic loading rates (OLRs): 3.34, 4.45, 6.68 kg COD/(m³·d), respectively (OLRs were R1 basis). The results indicated that TSAT system was highly efficient in PTA wastewater treatment at OLR lower than 4.45 kg COD/(m³·d). Miseq sequencing analysis demonstrated that R1 and R2 were predominated by hydrogenotrophic Methanolinea and acetotrophic Methanosaeta, separately. In addition, TA06, Caldisericia and Acetothermia associated groups were highly abundant in R1, whereas Chlorobiaceae and Syntrophobacteraceae were largely observed in R2. Tax4Fun analysis suggested that the important functional capabilities were significantly different between R1 and R2 (P < 0.05). The pathways related to aromatic compounds degradation mainly occurred in mesophilic stage, while the biosynthesis and metabolism pathways were more favored in thermophilic stage.
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Affiliation(s)
- Kai-Li Ma
- School of Environment, Henan Normal University, Xinxiang, 453007, China.
| | - Xiang-Kun Li
- School of Environment, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China; School of Civil and Transportation Engineering, Hebei University of Technology, Tianjin, 300000, China.
| | - Lin-Lin Bao
- School of Environment, Henan Normal University, Xinxiang, 453007, China
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13
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Zhang P, Du HB, Tong GD, Li XK, Sun XH, Chi XL, Xing YF, Zhou ZH, Li Q, Chen B, Wang H, Wang L, Jin H, Mao DW, Wang XB, Wu QK, Li FP, Hu XY, Lu BJ, Yang ZY, Zhang MX, Shi WB, He Q, Li Y, Jiang KP, Xue JD, Li XD, Jiang JM, Lu W, Tian GJ, Hu ZB, Guo JC, Li CZ, Deng X, Luo XL, Li FY, Zhang XW, Zheng YJ, Zhao G, Wang LC, Wu JH, Guo H, Mi YQ, Gong ZJ, Wang CB, Jiang F, Guo P, Yang XZ, Shi WQ, Yang HZ, Zhou Y, Sun NN, Jiao YT, Gao YQ, Zhou DQ, Ye YA. Serum hepatitis B surface antigen correlates with fibrosis and necroinflammation: A multicentre perspective in China. J Viral Hepat 2018; 25:1017-1025. [PMID: 29624802 DOI: 10.1111/jvh.12903] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Accepted: 02/22/2018] [Indexed: 12/20/2022]
Abstract
The kinetics of serum hepatitis B surface antigen (HBsAg) during the natural history of hepatitis B virus (HBV) infection has been studied, but the factors affecting them remain unclear. We aimed to investigate the factors affecting HBsAg titres, using data from multicentre, large-sized clinical trials in China. The baseline data of 1795 patients in 3 multicentre trials were studied, and the patients were classified into 3 groups: hepatitis B early antigen (HBeAg)-positive chronic HBV infection (n = 588), HBeAg-positive chronic hepatitis B (n = 596), and HBeAg-negative chronic hepatitis B (n = 611). HBsAg titres in the different phases were compared, and multiple linear progression analyses were performed to investigate the implicated factors. HBsAg titres varied significantly in different phases (P = .000), with the highest (4.60 log10 IU/mL [10%-90% confidence interval: 3.52 log10 IU/mL-4.99 log10 IU/mL]) in patients with HBeAg-positive chronic HBV infection. In all phases, age and HBV DNA were correlated with serum HBsAg level. In HBeAg-positive chronic hepatitis B patients, a negative correlation between HBsAg titres and fibrosis stage was observed. Alanine amonitransferase or necroinflammatory activity was also correlated with HBsAg titres in HBeAg-negative chronic hepatitis B patients. In conclusion, decreased HBsAg titres may be associated with advancing fibrosis in HBeAg-positive chronic hepatitis B patients or increased necroinflammation in those with HBeAg-negative chronic hepatitis B. Our findings may help clinicians better understand the kinetics of HBsAg and provide useful insights into the management of this disease.
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Affiliation(s)
- P Zhang
- Department of Gastroenterology and Hepatology, Beijing University of Chinese Medicine Affiliated Dongzhimen Hospital, Beijing, China.,Institute of liver disease, Beijing University of Chinese Medicine Affiliated Dongzhimen Hospital, Beijing, China
| | - H B Du
- Department of Gastroenterology and Hepatology, Beijing University of Chinese Medicine Affiliated Dongzhimen Hospital, Beijing, China.,Institute of liver disease, Beijing University of Chinese Medicine Affiliated Dongzhimen Hospital, Beijing, China
| | - G D Tong
- Department of Hepatology, Shenzhen Hospital of Traditional Chinese Medicine, Shenzhen, Guangdong Province, China
| | - X K Li
- Department of Gastroenterology and Hepatology, Beijing University of Chinese Medicine Affiliated Dongzhimen Hospital, Beijing, China.,Institute of liver disease, Beijing University of Chinese Medicine Affiliated Dongzhimen Hospital, Beijing, China
| | - X H Sun
- Department of Hepatology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - X L Chi
- Department of Hepatology, Guangdong Hospital of Traditional Chinese Medicine, Guangzhou, Guangdong Province, China
| | - Y F Xing
- Department of Hepatology, Shenzhen Hospital of Traditional Chinese Medicine, Shenzhen, Guangdong Province, China
| | - Z H Zhou
- Department of Hepatology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Q Li
- The Fourth Ward, Fuzhou Infectious Disease Hospital, Fuzhou, Fujian Province, China
| | - B Chen
- Department of Hepatology, The First Hospital of Hunan University of Chinese Medicine, Changsha, Hunan Province, China
| | - H Wang
- Department of Infectious Disease, Ruijin Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - L Wang
- Department of Hepatology, Chengdu Infectious Disease Hospital, Chengdu, Sichuan Province, China
| | - H Jin
- Department of Integrated Traditional and Western Medicine on Liver Diseases, Beijing Youan Hospital, Capital Medical University, Beijing, China
| | - D W Mao
- Department of Hepatology, The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning, Guangxi Province, China
| | - X B Wang
- Department of Integrated Traditional and Western Medicine on Liver Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, China
| | - Q K Wu
- The First Department of Hepatology, Shenzhen No. 3 People's Hospital, Shenzhen, Guangdong Province, China
| | - F P Li
- Department of Hepatology, Shanxi Hospital of Traditional Chinese Medicine, Xi'an, Shanxi Province, China
| | - X Y Hu
- Department of Infectious Disease, The Affiliated Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan Province, China
| | - B J Lu
- Department of Hepatology, The Affiliated Hospital of Liaoning University of Traditional Chinese Medicine, Shenyang, Liaoning Province, China
| | - Z Y Yang
- Department of Integrated Traditional and Western Medicine on Liver Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, China
| | - M X Zhang
- Department of Integrated Traditional and Western Medicine on Liver Diseases, Shenyang Infectious Disease Hospital, Shenyang, Liaoning Province, China
| | - W B Shi
- Department of Infectious Disease, The First Affiliated Hospital of Anhui Academy of Chinese Medicine, Hefei, Anhui Province, China
| | - Q He
- The First Department of Hepatology, Shenzhen No. 3 People's Hospital, Shenzhen, Guangdong Province, China
| | - Y Li
- Department of Hepatology, The Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, Shandong Province, China
| | - K P Jiang
- Department of Hepatology, Foshan Hospital of Traditional Chinese Medicine, Foshan, Guangdong Province, China
| | - J D Xue
- Department of Hepatology, Shanxi Hospital of Traditional Chinese Medicine, Xi'an, Shanxi Province, China
| | - X D Li
- Department of Hepatology, Hubei Province Hospital of Traditional Chinese Medicine, Wuhan, Hubei Province, China
| | - J M Jiang
- Department of Hepatology, Guangdong Hospital of Traditional Chinese Medicine, Guangzhou, Guangdong Province, China
| | - W Lu
- Department of Infectious Disease, Tianjin Infectious Disease Hospital, Tianjin, China
| | - G J Tian
- Department of Hepatology, Guangdong Hospital of Traditional Chinese Medicine, Guangzhou, Guangdong Province, China
| | - Z B Hu
- Department of Hepatology, The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning, Guangxi Province, China
| | - J C Guo
- Department of Hepatology, Hangzhou No. 6 People's Hospital, Hangzhou, Zhejiang Province, China
| | - C Z Li
- Department of Infectious Disease, Changhai Hospital, The Second Military Medical University, Shanghai, China
| | - X Deng
- Department of Hepatology, Ruikang Hospital, Guangxi University of Chinese Medicine, Nanning, Guangxi Province, China
| | - X L Luo
- Department of Hepatology, Hubei Province Hospital of Traditional Chinese Medicine, Wuhan, Hubei Province, China
| | - F Y Li
- Treatment and Research Center of Infectious Disease, 302 Military Hospital of China, Beijing, China
| | - X W Zhang
- Treatment and Research Center of Infectious Disease, 302 Military Hospital of China, Beijing, China
| | - Y J Zheng
- Department of Hepatology, Shenzhen Hospital of Traditional Chinese Medicine, Shenzhen, Guangdong Province, China
| | - G Zhao
- Department of Hepatology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - L C Wang
- Center of Infectious Disease, Huaxi Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - J H Wu
- Center of Hepatology, Xiamen Hospital of Traditional Chinese Medicine, Xiamen, Fujian Province, China
| | - H Guo
- Department of Hepatology, The First Affiliated Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Y Q Mi
- Department of Infectious Disease, Tianjin Infectious Disease Hospital, Tianjin, China
| | - Z J Gong
- Department of Infectious Disease, Hubei People's Hospital, Wuhan, Hubei Province, China
| | - C B Wang
- The Fourth Department of Infectious Disease, Linyi People's Hospital, Linyi, Shandong Province, China
| | - F Jiang
- Department of Gastroenterology and Hepatology, Beijing University of Chinese Medicine Affiliated Dongzhimen Hospital, Beijing, China.,Institute of liver disease, Beijing University of Chinese Medicine Affiliated Dongzhimen Hospital, Beijing, China
| | - P Guo
- Department of Hepatology, Xiyuan Hospital, China Academy of Chinese medical Science, Beijing, China
| | - X Z Yang
- Institute of liver disease, Beijing University of Chinese Medicine Affiliated Dongzhimen Hospital, Beijing, China.,Department of Infectious Disease, Beijing University of Chinese Medicine Affiliated Dongzhimen Hospital, Beijing, China
| | - W Q Shi
- Department of Hepatology, Xinhua Hospital, Zhejiang University of Traditional Chinese medicine, Hangzhou, Zhejiang Province, China
| | - H Z Yang
- Department of Traditional Chinese medicine, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Y Zhou
- Department of Hepatology, Qingdao No. 6 People's Hospital, Qingdao, Shandong Province, China
| | - N N Sun
- Department of Hepatology, Beijing Hospital of Traditional Chinese Medicine, Beijing, China
| | - Y T Jiao
- Shunyi Hospital of Traditional Chinese Medicine, Beijing, China
| | - Y Q Gao
- Department of Hepatology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - D Q Zhou
- Department of Hepatology, Shenzhen Hospital of Traditional Chinese Medicine, Shenzhen, Guangdong Province, China
| | - Y A Ye
- Department of Gastroenterology and Hepatology, Beijing University of Chinese Medicine Affiliated Dongzhimen Hospital, Beijing, China.,Institute of liver disease, Beijing University of Chinese Medicine Affiliated Dongzhimen Hospital, Beijing, China
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14
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Ma KL, Li XK, Wang K, Meng LW, Liu GG, Zhang J. Establishment of thermophilic anaerobic terephthalic acid degradation system through one-step temperature increase startup strategy - Revealed by Illumina Miseq Sequencing. Chemosphere 2017; 184:951-959. [PMID: 28655114 DOI: 10.1016/j.chemosphere.2017.06.090] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Revised: 05/16/2017] [Accepted: 06/19/2017] [Indexed: 06/07/2023]
Abstract
Over recent years, thermophilic digestion was constantly focused owing to its various advantage over mesophilic digestion. Notably, the startup approach of thermophilic digester needs to be seriously considered as unsuitable startup ways may result in system inefficiency. In this study, one-step temperature increase startup strategy from 37 °C to 55 °C was applied to establish a thermophilic anaerobic system treating terephthalic acid (TA) contained wastewater, meanwhile, the archaeal and bacterial community compositions at steady periods of 37 °C and 55 °C during the experimental process was also compared using Illumina Miseq Sequencing. The process operation demonstrated that the thermophilic TA degradation system was successfully established at 55 °C with over 95% COD reduction. For archaea community, the elevation of operational temperature from 37 °C to 55 °C accordingly increase the enrichment of hydrogenotrophic methanogens but decrease the abundance of the acetotrophic ones. While for bacterial community, the taxonomic analysis suggested that Syntrophorhabdus (27.40%) was the dominant genus promoting the efficient TA degradation under mesophilic condition, whereas OPB95 (24.99%) and TA06 (14.01%) related populations were largely observed and probably take some crucial role in TA degradation under thermophilic condition.
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Affiliation(s)
- Kai-Li Ma
- School of Municipal and Environmental Engineering, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, China.
| | - Xiang-Kun Li
- School of Municipal and Environmental Engineering, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, China.
| | - Ke Wang
- School of Municipal and Environmental Engineering, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, China.
| | - Ling-Wei Meng
- School of Municipal and Environmental Engineering, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, China
| | - Gai-Ge Liu
- School of Municipal and Environmental Engineering, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, China
| | - Jie Zhang
- School of Municipal and Environmental Engineering, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, China
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15
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Meng LW, Li XK, Wang ST, Liu LL, Ma KL, Zhang J. The long-term impact of cefalexin on organic substrate degradation and microbial community structure in EGSB system. Chemosphere 2017; 184:215-223. [PMID: 28599150 DOI: 10.1016/j.chemosphere.2017.05.171] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [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: 02/19/2017] [Revised: 05/28/2017] [Accepted: 05/30/2017] [Indexed: 06/07/2023]
Abstract
In order to investigate long-term effect of cefalexin (CFX) on the performance of expanded granular sludge bed (EGSB) system and microbial community structure, two 1.47 L EGSB reactors E1 and E2 were designed and run for 224 days treating with synthetic antibiotic wastewater. For the purpose of comparison, E1 was fed with synthetic antibiotic industry wastewater with CFX added as the test reactor, while, E2 was fed without any CFX added as the control reactor (E2). The addition of CFX resulted in the continual increasing of soluble COD (sCOD) and accumulation of VFAs in the effluent of E1 system. Besides, it was found that the accumulation of CFX by-products D-1, D-2 and D-3 was negative correlation with sCOD removal efficiency. Furthermore, the microbial community structures were also investigated. For the bacterial community, Gelria and Syntrophorhabdus which can ferment propionate and other organic pollutants as their substrate were obviously enriched in E1 system. For the archaea, there was more functional diversity in E1 system than in E2 system. Furthermore, fungi also played an important role on the removal of complex organics in E1 system.
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Affiliation(s)
- Ling-Wei Meng
- School of Municipal and Environmental Engineering, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Xiang-Kun Li
- School of Municipal and Environmental Engineering, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
| | - Shu-Tao Wang
- School of Municipal and Environmental Engineering, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
| | - Li-Li Liu
- School of Municipal and Environmental Engineering, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Kai-Li Ma
- School of Municipal and Environmental Engineering, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Jie Zhang
- School of Municipal and Environmental Engineering, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
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16
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Enosawa S, Suzuki S, Li XK, Okuyama T, Fujino M, Amemiya H. Higher Efficiency of Retrovirus Transduction in the Late Stage of Primary Culture of Hepatocytes from Nontreated than from Partially Hepatectomized Rat. Cell Transplant 2017; 7:413-6. [PMID: 9710313 DOI: 10.1177/096368979800700412] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
The aim of this investigation was to optimize the conditions for gene transduction by a retroviral vector into primary cultured hepatocytes. Because a retrovirus infection is dependent upon the proliferative activity of the target cells, we examined the thymidine incorporation of the primary culture, using cells from nontreated and partially hepatectomized donor rats. Partial hepatectomy 1 day before cell isolation greatly enhanced the thymidine incorporation, and similarly, the transduction of LacZ, the gene for E. coli β-galactosidase, although the percentage of transduced cells remained low. With cells from the normal rat, the thymidine incorporation increased gradually after the beginning of the culture and reached 16 times the initial activity on day 2, while hepatocytes from the partially hepatectomized donor showed no increase at that stage of the culture. Correspondingly, the number of gene-transduced hepatocytes was increased when the vector was added to the cells 1 or 2 days after isolation. Therefore, hepatocytes cultured for 1 or 2 days after isolation are suitable for retroviral transduction.
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Affiliation(s)
- S Enosawa
- Department of Experimental Surgery and Bioengineering, National Children's Medical Research Center, Tokyo, Japan
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17
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Ma KL, Li XK, Wang K, Zhou HX, Meng LW, Zhang J. 454-Pyrosequencing Reveals Microbial Community Structure and Composition in a Mesophilic UAFB System Treating PTA Wastewater. Curr Microbiol 2015. [PMID: 26223650 DOI: 10.1007/s00284-015-0884-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
To well understand the community structure and composition of mesophilic microorganisms in anaerobic system fed with PTA wastewater, an up-flow anaerobic fixed bed reactor was continuously run at 33 and 37 °C for 75 and 60 days, respectively. Both fluorescence in situ hybridization analysis and 454-pyrosequencing were applied to investigate the microbial distinction within mesophilic ranges. A preferable performance was achieved at 37 than 33 °C. The taxonomic complexities of two samples were further compared at phylum, class, and genus levels. Notably, microbial diversity differed a lot and the change of populations was observed mainly in the shared OTUs. Genus level analysis showed that when temperature was increased to 37 °C, the abundance of Thauera and Hydrogenophaga (β-Proteobacteria) decreased by 93.75 and 61.47 %, respectively, whereas that of Syntrophorhabdus (δ-Proteobacteria) increased from 4.93 to 16.01 %. Furthermore, the dominant archaeal Methanobacterium at both temperatures indicated the prevailing contribution of hydrogenotrophic methanogens in mesophilic anaerobic system.
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Affiliation(s)
- Kai-Li Ma
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, 73 Huanghe Road, Harbin, 150090, China.
| | - Xiang-Kun Li
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, 73 Huanghe Road, Harbin, 150090, China.
| | - Ke Wang
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, 73 Huanghe Road, Harbin, 150090, China
| | - He-Xi Zhou
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, 73 Huanghe Road, Harbin, 150090, China
| | - Ling-Wei Meng
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, 73 Huanghe Road, Harbin, 150090, China
| | - Jie Zhang
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, 73 Huanghe Road, Harbin, 150090, China
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18
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Xiong XJ, Wang PQ, Li SJ, Li XK, Zhang YQ, Wang J. Garlic for hypertension: A systematic review and meta-analysis of randomized controlled trials. Phytomedicine 2015; 22:352-361. [PMID: 25837272 DOI: 10.1016/j.phymed.2014.12.013] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [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: 09/05/2014] [Revised: 12/26/2014] [Accepted: 12/30/2014] [Indexed: 06/04/2023]
Abstract
BACKGROUND In the past decade, garlic has become one of the most popular complementary therapies for blood pressure (BP) control used by hypertensive patients. Numerous clinical studies have focused on the BP-lowering effect of garlic, but results have been inconsistent. Overall, there is a dearth of information available to guide the clinical community on the efficacy of garlic in hypertensive patients. AIM To systematically review the medical literature to investigate the current evidence of garlic for the treatment of hypertension. METHODS PubMed, the Cochrane Library and EMBASE were searched for appropriate articles from their respective inceptions until August 2014. Randomized, placebo-controlled trials comparing garlic vs. a placebo in patients with hypertension were considered. Papers were independently reviewed by two reviewers and were analyzed using Cochrane software Revman 5.2. RESULTS A total of seven randomized, placebo-controlled trials were identified. Compared with the placebo, this meta-analysis revealed a significant lowering effect of garlic on both systolic BP (WMD: -6.71 mmHg; 95% CI: -12.44 to -0.99; P = 0.02) and diastolic BP (WMD: -4.79 mmHg; 95% CI: -6.60 to -2.99; P < 0.00001). No serious adverse events were reported in any of the trials. CONCLUSION The present review suggests that garlic is an effective and safe approach for hypertension. However, more rigorously designed randomized controlled trials focusing on primary endpoints with long-term follow-up are still warranted before garlic can be recommended to treat hypertensive patients.
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Affiliation(s)
- X J Xiong
- Department of Cardiology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China.
| | - P Q Wang
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing, China
| | - S J Li
- Department of Biological Science and Technology, School of Life Sciences, Tsinghua University, Beijing, China
| | - X K Li
- Bio-organic and Natural Products Laboratory, McLean Hospital, Harvard Medical School, Belmont, MA, USA
| | - Y Q Zhang
- Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, ON, Canada
| | - J Wang
- Department of Cardiology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
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19
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Zhao M, Guo H, Chen J, Fujino M, Ito H, Takahashi K, Abe F, Nakajima M, Tanaka T, Wang J, Huang H, Zheng S, Hei M, Li J, Huang S, Li J, Ma X, Chen Y, Zhao L, Zhuang J, Zhu P, Li XK. 5-aminolevulinic acid combined with sodium ferrous citrate ameliorates H2O2-induced cardiomyocyte hypertrophy via activation of the MAPK/Nrf2/HO-1 pathway. Am J Physiol Cell Physiol 2015; 308:C665-72. [PMID: 25652453 DOI: 10.1152/ajpcell.00369.2014] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Accepted: 02/02/2015] [Indexed: 11/22/2022]
Abstract
Hydrogen peroxide (H2O2) causes cell damage via oxidative stress. Heme oxygenase-1 (HO-1) is an antioxidant enzyme that can protect cardiomyocytes against oxidative stress. In this study, we investigated whether the heme precursor 5-aminolevulinic acid (5-ALA) with sodium ferrous citrate (SFC) could protect cardiomyocytes from H2O2-induced hypertrophy via modulation of HO-1 expression. HL-1 cells pretreated with/without 5-ALA and SFC were exposed to H2O2 to induce a cardiomyocyte hypertrophy model. Hypertrophy was evaluated by planar morphometry, (3)H-leucine incorporation, and RT-PCR analysis of hypertrophy-related gene expressions. Reactive oxygen species (ROS) production was assessed by 5/6-chloromethyl-2',7'-ichlorodihydrofluorescein diacetate acetylester. HO-1 and nuclear factor erythroid 2-related factor 2 (Nrf2) protein expressions were analyzed by Western blot. In our experiments, HL-1 cells were transfected with Nrf2 siRNA or treated with a signal pathway inhibitor. We found several results. 1) ROS production, cell surface area, protein synthesis, and expressions of hypertrophic marker genes, including atrial natriuretic peptide, brain natriuretic peptide, atrial natriuretic factor, and β-myosin heavy chain, were decreased in HL-1 cells pretreated with 5-ALA and SFC. 2) 5-ALA and SFC increased HO-1 expression in a dose- and time-dependent manner, associated with upregulation of Nrf2. Notably, Nrf2 siRNA dramatically reduced HO-1 expression in HL-1 cells. 3) ERK1/2, p38, and SAPK/JNK signaling pathways were activated and modulate 5-ALA- and SFC-enhanced HO-1 expression. SB203580 (p38 kinase), PD98059 (ERK), or SP600125 (JNK) inhibitors significantly reduced this effect. In conclusion, our data suggest that 5-ALA and SFC protect HL-1 cells from H2O2-induced cardiac hypertrophy via activation of the MAPK/Nrf2/HO-1 signaling pathway.
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Affiliation(s)
- Mingyi Zhao
- Department of Cardiovascular Surgery, Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Huiming Guo
- Department of Cardiovascular Surgery, Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Jimei Chen
- Department of Cardiovascular Surgery, Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | | | | | | | | | | | | | - Jinju Wang
- Department of Pharmacology and Toxicology, Boonshoft School of Medicine, Wright State University, Dayton, Ohio
| | - Huanlei Huang
- Department of Cardiovascular Surgery, Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Shaoyi Zheng
- Department of Cardiovascular Surgery, Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Mingyan Hei
- Department of Pediatrics, the Third Xiangya Hospital, Central South University, Changsha, China
| | - Jiaxin Li
- Department of Cardiovascular Surgery, Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Shuai Huang
- Department of Cardiovascular Surgery, Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Jiani Li
- Department of Cardiovascular Surgery, Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Xiaotang Ma
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical College, Zhanjiang, China
| | - Yanfang Chen
- Department of Pharmacology and Toxicology, Boonshoft School of Medicine, Wright State University, Dayton, Ohio
| | - Lingling Zhao
- Department of Pediatrics, the Third Xiangya Hospital, Central South University, Changsha, China
| | - Jian Zhuang
- Department of Cardiovascular Surgery, Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Ping Zhu
- Department of Cardiovascular Surgery, Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China;
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20
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Ren YH, Wang K, Li XK, Ma KL, Zhang J. [Influence of alkalinity and DO on ANAMMOX bioreactor at normal temperature and low substrate concentration]. Huan Jing Ke Xue 2014; 35:4218-4223. [PMID: 25639098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A lab-scale up-flow ANAMMOX bioreactor with ceramics as biomass carrier was started up. The influence of alkalinity and dissolved oxygen on ANAMMOX reaction at normal temperature and low substrate concentration was investigated. The results showed that, at (20 ± 2) degrees C and an HRT of 3 h, when the alkalinity was between 44 mg x L(-1) and 350 mg x L(-1), the ammonia removal efficiency was decreased from 97.2% to 75.6% and the TN removal efficiency was decreased from 89.7% to 75.1% as the alkalinity reduced. Meanwhile, the nitrite removal efficiency was stabilized at 99.7%. When the alkalinity was 0 mg x L(-1), the effluent nitrite concentration was increased to 4.9 mg x L(-1). Ammonia removal efficiency was decreased by 12.3% because of light. When the HRT was 1.5 h, the DO value was < 3 mg x L(-1), the average removal efficiencies of ammonia and nitrite were 99.7% and 100%, respectively, the nitrogen removal rate was 1.0 kg x (m3 x d)(-1). 16S rRNA phylogenic analysis was applied to analyze the microbial community structure. Results revealed that Candidatus Jettenia asiatica and Candidatus Brocadia sp. were adapted to normal temperature.
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21
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Xiong XJ, Liu W, Yang XC, Feng B, Zhang YQ, Li SJ, Li XK, Wang J. Ginkgo biloba extract for essential hypertension: a systemic review. Phytomedicine 2014; 21:1131-6. [PMID: 24877716 DOI: 10.1016/j.phymed.2014.04.024] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [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: 12/12/2013] [Revised: 03/20/2014] [Accepted: 04/20/2014] [Indexed: 06/03/2023]
Abstract
BACKGROUND Ginkgo biloba extract (GBE), a traditional natural herbal product, is often used in the treatment of essential hypertension (EH) as complementary therapy in China and European countries. AIM To critically assess the current clinical evidence of efficacy and safety of GBE for EH. METHODS 7 electronic databases (Cochrane Library, PubMed, EMBASE, VIP, CBM, Wanfang data, and CNKI) were searched to identify randomized controlled trials (RCTs) of GBE for EH. Methodological quality was assessed independently using the Cochrane Handbook for Systematic Reviews of Interventions. RESULTS A total of 9 RCTs with 1012 hypertensive patients were identified and reviewed. Most RCTs were of high risk of bias with flawed study design and poor methodological quality. 6 trials demonstrated potential positive effect of GBE as complementary therapy on BP reduction when compared with antihypertensive drug therapy; however, it was not associated with a statistically significant effect on both SBP and DBP reduction in 3 other trials. Despite the positive findings, there were so many methodological limitations and significant clinical heterogeneity. Most of the trials did not report adverse effects, and the safety of GBE is still uncertain. CONCLUSION No confirmative conclusions on the efficacy and safety of GBE for EH could be drawn. More rigorous trials are warranted to support their clinical use.
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Affiliation(s)
- X J Xiong
- Department of Cardiology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing 100053, China.
| | - W Liu
- Department of Cardiology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing 100053, China
| | - X C Yang
- Department of Cardiology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing 100053, China
| | - B Feng
- Department of Cardiology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing 100053, China
| | - Y Q Zhang
- Department of Clinical Epidemiology and Biostatistics, McMaster University, ON L8S 4L8, Canada
| | - S J Li
- School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - X K Li
- Bio-organic and Natural Products Laboratory, McLean Hospital, Harvard Medical School, USA
| | - J Wang
- Department of Cardiology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing 100053, China
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22
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Sun Y, Kaneko S, Li XK, Li X. The PI3K/Akt signal hyperactivates Eya1 via the SUMOylation pathway. Oncogene 2014; 34:2527-37. [PMID: 24954506 PMCID: PMC4275428 DOI: 10.1038/onc.2014.179] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [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: 08/28/2013] [Revised: 05/01/2014] [Accepted: 05/16/2014] [Indexed: 12/13/2022]
Abstract
Eya1 is a conserved critical regulator of organ-specific stem cells. Ectopic Eya1 activities, however, promote transformation of mammary epithelial cells. Signals that instigate Eya1 oncogenic activities remain to be determined. Here, we show that Akt1 kinase physically interacts with Eya1 and phosphorylates a conserved consensus site of the Akt kinase. PI3K/Akt signaling enhances Eya1 transcription activity, which largely attributes to the phosphorylation-induced reduction of Eya1 SUMOylation. Indeed, SUMOylation inhibits Eya1 transcription activity; and pharmacologic and genetic activation of PI3K/Akt robustly reduces Eya1 SUMOylation. Wild type but not Akt phosphorylation site mutant Eya1 variant rescues the cell migratory phenotype of EYA1-silenced breast cancer cells, highlighting the importance of Eya1 phosphorylation. Furthermore, knockdown EYA1 sensitizes breast cancer cells to the PI3K/Akt1 inhibitor and irradiation treatments. Thus, the PI3K/Akt signal pathway activates Eya1. These findings further suggest that regulation of SUMOylation by PI3K/Akt signaling is likely an important aspect of tumorigenesis.
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Affiliation(s)
- Y Sun
- 1] Urological Diseases Research Center, Boston Children's Hospital, 300 Longwood Avenue, Boston, MA, USA [2] Departments of Surgery and Pathology, Harvard Medical School, Boston, MA, USA
| | - S Kaneko
- 1] Urological Diseases Research Center, Boston Children's Hospital, 300 Longwood Avenue, Boston, MA, USA [2] Departments of Surgery and Pathology, Harvard Medical School, Boston, MA, USA
| | - X K Li
- School of Pharmaceutical Science, Wenzhou Medical College, Wenzhou, China
| | - X Li
- 1] Urological Diseases Research Center, Boston Children's Hospital, 300 Longwood Avenue, Boston, MA, USA [2] Departments of Surgery and Pathology, Harvard Medical School, Boston, MA, USA
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23
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Zhang JS, Herreros-Villanueva M, Herreros-Vilanueva M, Koenig A, Deng Z, de Narvajas AAM, Gomez TS, Meng X, Bujanda L, Ellenrieder V, Li XK, Kaufmann SH, Billadeau DD. Differential activity of GSK-3 isoforms regulates NF-κB and TRAIL- or TNFα induced apoptosis in pancreatic cancer cells. Cell Death Dis 2014. [PMID: 24675460 PMCID: PMC4454316 DOI: 10.1038/cddis.2014.341] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- J-S Zhang
- 1] Division of Oncology Research and Schulze Center for Novel Therapeutics, Mayo Clinic College of Medicine, Rochester, MN, USA [2] School of Pharmaceutical Sciences and Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University, Wenzhou, Zhejiang, PR China
| | | | - M Herreros-Vilanueva
- 1] Division of Oncology Research and Schulze Center for Novel Therapeutics, Mayo Clinic College of Medicine, Rochester, MN, USA [2] Department of Gastroenterology, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Hospital Donostia/Instituto Biodonostia, Universidad del País Vasco UPV/EHU, San Sebastián, Spain
| | - A Koenig
- 1] Division of Oncology Research and Schulze Center for Novel Therapeutics, Mayo Clinic College of Medicine, Rochester, MN, USA [2] Department of Gastroenterology and Endocrinology, Philipps University of Marburg, Marburg, Germany
| | - Z Deng
- 1] Division of Oncology Research and Schulze Center for Novel Therapeutics, Mayo Clinic College of Medicine, Rochester, MN, USA [2] Department of Pathophysiology, Qiqihar Medical University, Qiqihar, PR China
| | - A A-M de Narvajas
- Division of Oncology Research and Schulze Center for Novel Therapeutics, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - T S Gomez
- Division of Oncology Research and Schulze Center for Novel Therapeutics, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - X Meng
- Division of Oncology Research and Schulze Center for Novel Therapeutics, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - L Bujanda
- Department of Gastroenterology, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Hospital Donostia/Instituto Biodonostia, Universidad del País Vasco UPV/EHU, San Sebastián, Spain
| | - V Ellenrieder
- Department of Gastroenterology and Endocrinology, Philipps University of Marburg, Marburg, Germany
| | - X K Li
- School of Pharmaceutical Sciences and Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University, Wenzhou, Zhejiang, PR China
| | - S H Kaufmann
- Division of Oncology Research and Schulze Center for Novel Therapeutics, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - D D Billadeau
- Division of Oncology Research and Schulze Center for Novel Therapeutics, Mayo Clinic College of Medicine, Rochester, MN, USA
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24
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Li XK, Chu ZR, Liu YJ, Zhu MT, Yang L, Zhang J. Molecular characterization of microbial populations in full-scale biofilters treating iron, manganese and ammonia containing groundwater in Harbin, China. Bioresour Technol 2013; 147:234-239. [PMID: 23994965 DOI: 10.1016/j.biortech.2013.08.008] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [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: 06/09/2013] [Revised: 07/30/2013] [Accepted: 08/02/2013] [Indexed: 06/02/2023]
Abstract
In iron and manganese-containing groundwater treatment for drinking water production, biological filter is an effective process to remove such pollutants. Until now the exact microbial mechanism of iron and manganese removal, especially coupled with other pollutants, such as ammonia, has not been clearly understood. To assess this issue, the performance of a full-scale biofilter located in Harbin, China was monitored over four months. Microbial populations in the biofilter were investigated using T-RFLP and clone library technique. Results suggested that Gallionella, Leptothrix, Nitrospira, Hyphomicrobium and Pseudomonas are dominant in the biofilter and play major roles in the removal of iron, manganese and ammonia. The spatial distribution of microbial populations along the depth of the biofilter demonstrated the stratification of the removal of iron, manganese and ammonia. Additionally, the absence of ammonia-oxidizing bacteria in the biofilter implicated that ammonia-oxidizing archaea might be responsible for the oxidation of ammonia to nitrite.
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Affiliation(s)
- Xiang-Kun Li
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, 73 Huanghe Road, Harbin 150090, China.
| | - Zhao-Rui Chu
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, 73 Huanghe Road, Harbin 150090, China
| | - Ya-Jun Liu
- China Aerospace Construction Group Limited Company, Beijing 100071, China
| | - Meng-Ting Zhu
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, 73 Huanghe Road, Harbin 150090, China
| | - Liu Yang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, 73 Huanghe Road, Harbin 150090, China
| | - Jie Zhang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, 73 Huanghe Road, Harbin 150090, China.
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25
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Gu SH, Xu WD, Xu L, Li XK, Ochiya T, Wang Y, Li JF, Gu YD, Xu JG. Regenerated host axons form synapses with neurons derived from neural stem cells transplanted into peripheral nerves. J Int Med Res 2011; 38:1721-9. [PMID: 21309486 DOI: 10.1177/147323001003800517] [Citation(s) in RCA: 6] [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] [Indexed: 11/17/2022] Open
Abstract
It is reported that neural stem cells (NSC) can arrest denervated muscle atrophy and promote nerve regeneration when transplanted into injured peripheral nerves, and that regenerated host axons can form synapses with transplanted and differentiated NSC. In this study, F344 rat nerve segments and F344 rat NSC were transplanted into host green fluorescence protein (GFP) transgenic F344 rats. This allowed transplanted F344 rat tissue to be used as a nonluminous background for the clear visualization of regenerated host GFP axons. Regenerated host axons grew into the transplanted F344 nerve segment 2 weeks after nerve anastomosis. Immunohistochemical staining and confocal microscope analysis revealed that regenerated host axons formed synapses with NSC-derived neurons. The findings confirmed that regenerated peripheral axons form synapses with neurons in peripheral nerves, possibly forming the basis for clinical application in peripheral nerve injury.
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Affiliation(s)
- S H Gu
- Department of Hand Surgery, Huashan Hospital, Fudan University, Shanghai, China
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26
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Huang R, Li D, Li X, Bao L, Jiang A, Zhang J. Positive role of nitrite as electron acceptor on anoxic denitrifying phosphorus removal process. CHINESE SCI BULL 2007. [DOI: 10.1007/s11434-007-0315-9] [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: 10/23/2022]
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27
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Li XK, Huang RX, Bao LL, Shao CH, Zhang J. Simultaneous phosphorus and nitrogen removal in a continuous-flow two-sludge system. J Environ Sci (China) 2006; 18:52-57. [PMID: 20050548] [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: 05/28/2023]
Abstract
The ability of simultaneous biological phosphorus and nitrogen removal was investigated in a lab-scale continuous-flow two-sludge system. Alternating anaerobic and anoxic conditions were combined with contact oxidation stage for treating raw municipal wastewater. Long-term experiments showed that the contradiction of competing for the organic substrate between denitrifying bacteria and PAOs (phosphorus accumulating organisms) in traditional phosphorus and nitrogen removal system has been resolved. The system can adapt to low influent COD/TN ratio (C/N). Furthermore the SRT (sludge retention time) of nitrifying sludge and denitrifying phosphorus removal sludge can be controlled at optimal conditions respectively. The removal efficiency of COD, TP, TN, and NH4-N was 81.78%, 92.51%,75.75%, and 84.47% respectively. It was also found that the appropriate influent C/N should be controlled at the range of 3.8-6, while the optimal C/N to the system ranged between 4-5, and the BFR (bypass sludge flow rate) should be controlled at 0.35 around.
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Affiliation(s)
- Xiang-Kun Li
- School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China.
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28
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Huang R, Zhang J, Ma L, Jiang A, Kong XJ, Li XK, Bao L. Efficiencies of residual organic pollutants removal from secondary effluent by switching of coagulation- air flotation -filtration processes. Water Sci Technol 2006; 54:215-24. [PMID: 17302323] [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: 05/14/2023]
Abstract
It is an essential task to remove the residual organic pollutants (ROP) from secondary effluent of a Wastewater Treatment Plant (WWTP) in wastewater reclamation and reuse processes. Four different compared flow schemes would be achieved for further purification of the secondary effluent by switching of different valves. In order to mainly remove non-biodegradable residual organic pollutants under various operating conditions, the optimum technology and economic process was obtained in the advanced purification flow scheme at a flow of 3200 m(3)/d in Harbin Wenchang WWTP. Conclusions under a lot of experiments show that: choosing the coagulation-settler plus biofilm filter for advanced purification process is reasonable; during the stable operation phase, this process showed good performance in removing the COD, BOD5, TP, NH3-N and SS; the removal rates are 50%, 39%, 67%, 50%, 80% respectively. The effluent is able to excel the requirements for wastewater reuse standards. The unit cost of the water is 0.542 yuan/m(3), which is far below the fee paid for supply water, long-distance transfer water or seawater desalination through economic analysis.
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Affiliation(s)
- R Huang
- Secondary campus 2427#, School of Municipal and Environment Engineering, Harbin Institute of Technology, Heilongjiang 150090, China.
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29
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Affiliation(s)
- T Irvine
- Cardiothoracic Unit, Freeman Hospital, Newcastle upon Tyne, UK
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30
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Fujino M, Li XK, Kitazawa Y, Funeshima N, Guo L, Okuyama T, Amano T, Amemiya H, Suzuki S. Selective repopulation of mice liver after Fas-resistant hepatocyte transplantation. Cell Transplant 2002; 10:353-61. [PMID: 11549054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023] Open
Abstract
Hepatocyte transplantation has been proposed as a potential therapeutic method to treat irreversible liver failure and inherited hepatic disorders, although transplanted cells do not easily reconstruct the liver tissue under intact conditions. This study was aimed at modulating the recipient liver conditions to promote repopulation of the liver after hepatocyte transplantation. Hepatocytes isolated from male MRL-lpr/lpr (lpr) mice with a mutation of Fas antigen were transplanted in a number of 1 x 10(6) cells in female MRL-+/+ (wild-type mice) by intrasplenic injection. An agonistic anti-Fas antibody (0.15 mg/kg) was administered intravenously 24 h after cell transplantation. We also administrated the antibody at 0.3 mg/kg 1 week after grafting and at 0.6 mg/kg 2 weeks after transplantation. The liver specimens were taken at different time intervals for histological examination. The reconstructed male lpr hepatocytes in the female wild-type mice were determined by a real-time quantitative PCR assay using the primers and probe for the sry gene. The pathologic findings of the recipient livers after treatment with anti-Fas antibody revealed a large number of apoptotic hepatocytes. The grafted lpr hepatocytes were observed to reconstruct as much as 6.9% of the recipient liver in the anti-Fas antibody-treated group 3 months after transplantation. In contrast, we observed the transplanted cells at lower than 0.1% in the nontreated livers. These findings demonstrated that repeated induction of apoptosis in recipient hepatocytes shifts the environment of the liver to a regenerative condition. This method may be useful to promote the reconstruction of transplanted hepatocytes in a recipient liver.
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Affiliation(s)
- M Fujino
- Department of Experimental Surgery and Bioengineering, National Children's Medical Research Center, Tokyo, Japan
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31
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Nakajima T, Enosawa S, Mitani T, Li XK, Suzuki S, Amemiya H, Koiwai O, Sakuragawa N. Cytological examination of rat amniotic epithelial cells and cell transplantation to the liver. Cell Transplant 2002; 10:423-7. [PMID: 11549066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023] Open
Abstract
It is hoped that amniotic epithelial cells can be useful in cell-mediated gene therapy. We report here an experimental cell transplantation model of amniotic cells in rats. There is an anatomical difference between human and rodent embryos. We established a method to isolate amniotic cells that are equivalent to human amniotic epithelial cells. An amniotic membrane distinct from the yolk sac was carefully collected and teased in saline containing deoxyribonuclease and hyaluronidase, followed by collagenase digestion. The cell yield was approximately 10(6) cells per pregnant female (10(5) cells per fetus), roughly in proportion to the age of fetus used, and 60% of the isolated cells were attached to the dish under culture conditions. Telomerase activity was higher in the cells isolated from fetuses in the middle stage (day 13.5 to 15.5) than in the late stage (day 17.5 to 21.5). Adherent cells exhibited two to three times more cell division, resulting in a ninefold increase in the number of cells. Immunohistochemical analysis revealed that approximately half of the adherent cells were albumin positive and formed clusters. The senescent cells survived for 2 months without apparent morphological changes. The adherent cells were able to be stored in liquid nitrogen and had a viability of 70% when thawed. Gene transduction with adenovirus vector was highly effective for rat amniotic cells. Transplantation of lacZ transfected amniotic cells into syngeneic rat liver resulted in the integration of the transplanted cells in the liver structure and the cells survived for at least 30 days.
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Affiliation(s)
- T Nakajima
- National Children's Medical Research Centre, Tokyo, Japan
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32
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Kosuga M, Takahashi S, Tanabe A, Fujino M, Li XK, Suzuki S, Yamada M, Kakishita K, Ono F, Sakuragawa N, Okuyama T. Widespread distribution of adenovirus-transduced monkey amniotic epithelial cells after local intracerebral injection: implication for cell-mediated therapy for lysosome storage disorders. Cell Transplant 2002; 10:435-9. [PMID: 11549068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023] Open
Abstract
Cell-mediated therapy for mucopolysaccharidosis type VII (MPSVII) was studied using monkey amniotic epithelial cells (mAEC). The cells were transduced with a recombinant adenovirus expressing human beta-glucuronidase (GUSB), and cells overexpressing GUSB were generated. The cells expressed 2000-fold higher activities than the endogenous GUSB activities of nontransduced mAEC, demonstrating that mAEC were successfully transduced with adenoviral vectors. These cells also secreted high levels of GUSB. To clarify the cross-correction of GUSB secreted from mAEC, the conditioned medium containing high levels of GUSB was added into the medium for culturing human or murine fibroblasts established from an MPSVII patient or a mouse model of the disease. Dramatic increases in GUSB activities were observed in both fibroblasts. We then transplanted the cells transduced with an adenovirus expressing LacZ into the caudate-putamen of monkey brain. Survival and distribution of the transplanted cells 1 month after the treatment were evaluated. Histochemical analysis showed that LacZ-positive cells were widely distributed in the brain, suggesting that the transplanted cells had migrated and were distributed even at regions far from the implantation site. These findings suggest that local intracerebral engraftment of genetically engineered amniotic epithelial cells is favorable for the treatment of lysosome storage disorders, whose pathological abnormalities are not restricted to specific regions of the brain.
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Affiliation(s)
- M Kosuga
- Department of Genetics, National Children's Medical Research Center, Tokyo, Japan
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33
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Fujino M, Li XK, Guo L, Kitazawa Y, Funeshima N, Fukuda S, Kimura H, Miyashita T, Okuyama T, Amano T, Suzuki S. T-cell apoptosis triggered by FTY720 via mitochondrial pathway. Transplant Proc 2001; 33:3084-5. [PMID: 11750325 DOI: 10.1016/s0041-1345(01)02314-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- M Fujino
- Department of Experimental Surgery and Bioengineering, National Children's Medical Research Center, Tokyo, Japan
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Abstract
FTY720, a novel immunosuppressive drug originally derived from a metabolite from Isaria sinclairii, is known to induce apoptosis in lymphocytes. In this study, we investigated the involvement of caspases and mitochondria in FTY720-mediated apoptosis using Jurkat cells, a human T cell line. Our results indicated that FTY720-induced activation of caspases 2, 3, 6, 8, 9 and 10, whereas caspases 1 and 5 were not activated. We also observed in the FTY720-treated cells a loss of mitochondrial membrane potential, a release of cytochrome c into cytosol and an exposed phosphatidylserine (PS) at the outer surface of the cell membrane. Pretreatment with a peptide inhibitor, benzyloxycarbonyl-Asp-CH2COC-2, 6-dichlorobenzene (Z-Asp-CH2-DCB), prevented apoptosis and externalization of phosphatidylserine, whereas the inhibitor did not prevent the mitochondrial events. This suggests that caspases may play a role downstream of the mitochondrial pathway. Therefore, caspase cascade in FTY720-treated cells may be initiated by activation of mitochondria.
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Affiliation(s)
- M Fujino
- Department of Experimental Surgery and Bioengineering, National Children's Medical Research Center, Tokyo, Japan
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Kamimukai N, Togo S, Hasegawa S, Kubota T, Kurosawa H, Li XK, Suzuki S, Shimada H. Expression of Bcl-2 family reduces apoptotic hepatocytes after excessive hepatectomy. Eur Surg Res 2001; 33:8-15. [PMID: 11340266 DOI: 10.1159/000049686] [Citation(s) in RCA: 15] [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: 02/01/2023]
Abstract
Excessive hepatectomy often causes fatal hepatic failure, but the mechanism is unknown. We used a novel protocol of partial 90 and 95% hepatectomy (PHx) to investigate this mechanism in 2 groups of rats. The 90% PHx rats survived, but the 95% PHx animals died of hepatic failure. In the latter, cytokine (interleukin-6, tumor necrosis factor-alpha) levels and the apoptotic hepatocyte count increased, and there were few mitotic cells. By contrast, in the 90% PHx rats, the mitotic cell count increased, and more anti-apoptotic Bcl-xL protein was expressed. These results demonstrate that expression of Bcl-xL protein as an anti-apoptotic factor or regeneration factor contributes to survival after 90% PHx. Using an adenovirus vector, the human bcl-2 gene (hbcl-2) was therefore transfected to DA rat livers where it was efficiently expressed, and then 95% PHx was performed. Liver damage was decreased and the apoptotic cell count decreased too, but the rats died. We concluded that transfection of the hbcl-2 gene partly prevents cytotoxicity (apoptosis), but cannot ensure survival. Thus, some other factor is required (e.g., a regeneration stimulator) to maintain life in these models.
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Affiliation(s)
- N Kamimukai
- Department of Surgery II, Yokohama City University School of Medicine, Yokohama, Japan.
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36
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Yano Y, Hara M, Miyahara T, Shibata K, Onitsuka T, Nawa Y, Li XK, Suzuki S, Amemiya H, Kimura H. Microchimeric cells from the peripheral blood associated with cardiac grafts are bone marrow derived, long-lived and maintain acquired tolerance to minor histocompatibility antigen H-Y. Transplantation 2001; 71:1456-62. [PMID: 11391235 DOI: 10.1097/00007890-200105270-00017] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [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: 11/26/2022]
Abstract
BACKGROUND Although it has been well established that the microchimerism occurs in the peripheral blood of the recipients after various settings in both clinical and experimental organ transplantation, nevertheless, their roles in inducing and maintaining acquired transplantation tolerance are controversial. Furthermore, regarding the cell lineages, kinetics, and functions of the cells that constitute the microchimerism after organ transplantation, solid information is not available. METHODS Using rat heterotopic heart isografts from bone marrow chimeras between cross-sex and applying polymerase chain reaction with specific primers to rat sex determining region of Y chromosome, a relationship between a state of microchimerism and induction as well as maintenance of acquired tolerance to H-Y antigen were examined. RESULTS Microchimeric cells of the peripheral blood (MCPB) after cardiac grafting contain bone marrow-derived and radiation-sensitive cells. Furthermore, removal of the primary cardiac grafts revealed that microchimeric cells in the peripheral blood are long-lived cells, i.e., more than 6 months. When the female rats that had contained long-lasting MCPB, were innoculated with syngeneic male dendritic cells, failure to sensitize female toward male specific antigen H-Y was found to occur. CONCLUSIONS Thus it was suggested that radiation-sensitive, bone marrow derived, long-lived MCPB play a significant role in maintaining acquired transplantation tolerance to minor histocompatibility antigen H-Y.
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Affiliation(s)
- Y Yano
- Department of Research Surgery, National Children's Medical Research Center, 3-35-31 Taishido, Setagaya-ku, Tokyo, 154-8509 Japan
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Fujino M, Li XK, Suda T, Hashimoto M, Okabe K, Yaginuma H, Mikoshiba K, Guo L, Okuyama T, Enosawa S, Amemiya H, Amano T, Suzuki S. In vitro prevention of cell-mediated xeno-graft rejection via the Fas/FasL-pathway in CrmA-transducted porcine kidney cells. Xenotransplantation 2001; 8:115-24. [PMID: 11328582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
Cell-mediated cytotoxicity may be involved in delayed and/or chronic xenograft rejection in which apoptosis is induced in the grafted cells via the Fas/Fas-ligand (FasL) and perforin/granzyme pathways. One barrier to the potential use of xeonogenic grafts for humans may be Fas/FasL-mediated apoptosis, which would be blocked by the gene expression of cytokine response modifier A (CrmA), a cowpox virus gene product. The purpose of this study is to explore whether crmA is an effective candidate gene for inhibiting apoptosis in an in vitro model of xenograft rejection, using Fas-expressing non-primate cells cultured with a soluble recombinant human FasL (sFasL). A recombinant adenovirus vector expressing CrmA (AxCALNLCrmA) was successfully generated with a Cre-mediated switching system. PK15 cells, derived from a porcine kidney and infected with AxCALNLCrmA and/or AxCANCre at a multiplicity of infection (MOI) ranging from 0.1 to 100, were cultured with human sFasL derived from KFL74.18, a human FasL-overexpressed cell line. The gene-expression level of the PK15 cells was confirmed by CrmA-immune staining. Approximately 70% of the control PK15 cells showed induced apoptosis when cultured with sFasL. In contrast, the apoptosis was dramatically reduced in crmA-gene-transduced PK15 cells. The inhibitory effect of apoptosis increased with an increase in the infection dose of AxCANCre. In addition, the activity of caspases 3 and 8 was significantly inhibited in the crmA-transduced cells. These results indicate that CrmA is an effective gene product for inhibiting Fas/FasL-mediated apoptosis, which suggests the potential therapeutic use of its gene transduction to protect against graft damage due to delayed and/or chronic xenograft rejection.
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Affiliation(s)
- M Fujino
- Department of Experimental Surgery, National Children's Medical Research Center, 3-35-31 Taishido, Setagaya-ku, Tokyo 154-8509, Japan
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Ohba M, Li XK, Kita Y, Enosawa S, Funeshima N, Nagai H, Zhang H, Okuyama T, Ogoshi S, Sasaguri S, Amemiya H, Suzuki S. Long-term graft acceptance in rat heart transplantation by CTLA4Ig gene transfection combined with FTY720 treatment. World J Surg 2001; 25:391-7; discussion 397-8. [PMID: 11344387 DOI: 10.1007/s002680020071] [Citation(s) in RCA: 9] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
CTLA4Ig strongly adheres to B7 molecules on antigen-presenting cells to block intracellular signal transduction via CD28 on helper T cells, which eventually inhibits immune responses. We have demonstrated that the administration to recipient animals of adenoviral vectors containing CTLA4Ig gene (adCTLA4Ig) prolonged graft survival, although the gene expression diminished in a time-dependent manner and the grafts were finally rejected. In addition, recipient animals treated with FTY720, a new immunosuppressant, exhibited a decrease in the number of peripheral lymphocytes due to apoptosis. In this study, we performed adCTLA4Ig transfection combined with FTY720 treatment in heart-grafted rats to determine if the combination could induce a mutual effect on graft survival. The recipient animals were given injections of 1 x 10(9) plaque-forming units of adCTLA4Ig via the tail vein immediately after grafting. On the day before transplantation we administered FTY720 orally to some of these animals at a dosage of 5 mg/kg and again on the day of transplantation. The median graft survival period in the adCTLA4Ig-only group was 27 days, whereas that in the combination group was markedly prolonged to 56 days. Of 15 grafts, 5 survived indefinitely. In these groups we observed detectable levels of CTLA4Ig in the sera 49 days after grafting; the levels were always higher in the combination group than in the adCTLA4Ig-only group. As a result, this study revealed that FTY720 and adCTLA4Ig have a potent mutual effect on graft survival during rat heart transplantation. Furthermore, it is highly possible that FTY720 enhances gene expression of adCTLA4Ig, which may be related to the long-term acceptance of grafts.
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Affiliation(s)
- M Ohba
- Department of Experimental Surgery and Bioengineering, National Children's Medical Research Center, 3-35-31 Taishido, Setagaya-ku, Tokyo 154-8509, Japan
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Li XK, Fujino M, Sugioka A, Morita M, Okuyama T, Guo L, Funeshima N, Kimura H, Enosawa S, Amemiya H, Suzuki S. Fulminant hepatitis by Fas-ligand expression in MRL-lpr/lpr mice grafted with Fas-positive livers and wild-type mice with Fas-mutant livers. Transplantation 2001; 71:503-8. [PMID: 11258428 DOI: 10.1097/00007890-200102270-00004] [Citation(s) in RCA: 16] [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: 12/21/2022]
Abstract
BACKGROUND Fulminant hepatitis in mice could be induced by gene-transfection of Fas ligand (FasL). However, the mechanisms of this event still remain controversial as to whether it is mediated by direct Fas/FasL interaction and/or neutrophil migration. To investigate the role of exogenous FasL-expression, we established a simple but clear mouse model on which we performed liver transplantation between Fas-mutant mice (MRL-lpr/lpr) and wild-type mice (MRL+/+). METHODS The controls were nontransplanted wild-type (group 1) and MRL-lpr/lpr (group 2) mice. We obtained recipients with a Fas defect only in the liver (group 3; MRL-lpr/lpr liver graft in wild-type mice) and Fas-defected recipients with Fas-positive livers (group 4; wild-type graft in MRL-lpr/lpr). We successfully expressed FasL in the liver by cotransfection of two types of adenoviral vectors, AxCALNFasL and AxCANCre, with a Cre-loxP switching system. RESULTS FasL-expression in the livers in groups 3 and 4 resulted in animal death due to fulminant hepatitis within 48 hr after administration of the vectors. We obtained similar findings in group 1, whereas the mice in group 2 survived without any evidence of hepatitis. Immune staining revealed a marked infiltration of CD11b-positive cells in group 1 and group 3. Despite the number of apoptotic cells, a few infiltration of CD11b-positive cells were seen in group 4. We observed no remarkable findings in the FasL-expressed livers in group 2. CONCLUSION The results indicated that exogenous FasL-expression induces hepatocyte apoptosis both by direct interaction with Fas and by recruiting Fas-positive inflammatory cells. These findings are important for generating a new strategy to prevent hepatitis as well as for understanding the role of the Fas/FasL interaction in the pathophysiology of hepatitis.
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Affiliation(s)
- X K Li
- Department of Experimental Surgery and Bioengineering, National Children's Medical Research Center, Tokyo, Japan
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Li XK, Tamura A, Fujino M, Guo L, Kakefuda T, Funeshima N, Enosawa S, Amari M, Naoe S, Amemiya H, Suzuki S. Induction of lymphocyte apoptosis in rat liver allograft with ongoing rejection by FTY720. Clin Exp Immunol 2001; 123:331-9. [PMID: 11207666 PMCID: PMC1905974 DOI: 10.1046/j.1365-2249.2001.01434.x] [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] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The action mechanism of FTY720, a novel immunosuppressant, is completely different from conventional immunosuppressants. The drug, which triggers apoptosis in murine and human lymphocytes, has a potent immunosuppressive activity to prevent allograft rejection without any severe side-effect. The present study was designed to determine whether FTY720 induces apoptotic cell death in activated lymphocytes infiltrated into liver grafts with ongoing rejection. FTY720 was orally administered at 5 mg/kg to the recipients on day 3 and day 4 after grafting, when the graft rejection was histologically confirmed. The intragraft patterns of IL-2, interferon-gamma (IFN-gamma), perforin, and granzyme B gene expression were detected by reverse transcriptase-polymerase chain reaction. The treatment reversed ongoing rejection and significantly prolonged recipient survival time compared with the control group. Light microscopic observation of the graft sections stained with the DNA nick-end labelling method showed that the apoptosis in the control allografts was mainly induced in hepatocytes, while that in the FTY720-treated allografts was in infiltrated lymphocytes. The rejection therapy with FTY720 did not alter the expression of IL-2, IFN-gamma, and perforin mRNAs, but slightly decreased granzyme B expression. Our results suggest that FTY720 does not alter the intrinsic lymphocyte function to produce the rejection-related cytokines, but strongly induces apoptotic cell death in the activated lymphocytes. Thus, FTY720 affords new insight into the mechanisms underlying improvements in immunosuppressive treatments.
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Affiliation(s)
- X K Li
- Department of Experimental Surgery & Bioengineering, National Children's Medical Research Centre, Tokyo, Japan
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Kosuga M, Sasaki K, Tanabe A, Li XK, Okawa H, Ogino I, Okuda O, Arai H, Sakuragawa N, Kamata Y, Azuma N, Suzuki S, Yamada M, Okuyama T. Engraftment of genetically engineered amniotic epithelial cells corrects lysosomal storage in multiple areas of the brain in mucopolysaccharidosis type VII mice. Mol Ther 2001; 3:139-48. [PMID: 11237670 DOI: 10.1006/mthe.2000.0234] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Cell-mediated gene therapy for visceral lesions of lysosomal storage diseases is promising; however, the treatment of central nervous system (CNS) lesions remains a challenge. In this study, we generated rat amniotic epithelial cells (AEC) that overexpress and secrete human beta-glucuronidase (GUSB) following transduction with an adenoviral vector encoding human GUSB. The AEC were used as donor cells for cell-mediated gene therapy of CNS lesions in mice with mucopolysaccharidosis type VII (MPSVII), a lysosomal storage disorder caused by an inherited deficiency of GUSB activity. After confirmation that the secreted GUSB was taken up mainly via mannose 6-phosphate receptors in primary cultured neurons, the AEC were transplanted into the brains of adult MPSVII mice. Histochemical analysis showed extensive GUSB activity throughout the ipsilateral hemisphere of the recipient brains, and pathological improvement of the lysosomal storage was observed even in regions far from the site of injection. These results suggest that intracerebral transplantation of genetically engineered AEC has therapeutic potential for the treatment of CNS lesions in lysosomal storage disorders.
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Affiliation(s)
- M Kosuga
- Department of Genetics, National Children's Medical Research Center, Tokyo, 154-8509, Japan
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Li XK, Motwani M, Tong W, Bornmann W, Schwartz GK. Huanglian, A chinese herbal extract, inhibits cell growth by suppressing the expression of cyclin B1 and inhibiting CDC2 kinase activity in human cancer cells. Mol Pharmacol 2000; 58:1287-93. [PMID: 11093765 DOI: 10.1124/mol.58.6.1287] [Citation(s) in RCA: 73] [Impact Index Per Article: 3.0] [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: 11/22/2022] Open
Abstract
Huanglian is an herb that is widely used in China for the treatment of gastroenteritis. We elected to determine whether huanglian could inhibit tumor cell growth by modulating molecular events directly associated with the cell cycle. Huanglian inhibited tumor growth and colony formation of gastric, colon, and breast cancer cell lines in a time- and dose-dependent manner. Cell growth was completely inhibited after 3 days of continuous drug exposure to 10 microg/ml of herb. This degree of growth inhibition was significantly greater than that observed with berberine, the major constituent of the herb. The inhibition of cell growth by huanglian was associated with up to 8-fold suppression of cyclin B1 protein. This resulted in complete inhibition of cdc2 kinase activity and accumulation of cells in G(2). The mRNA expression of cyclin B1 was not changed after huanglian treatment. There was no change in the protein expression of cyclins A or E. Therefore, the effect of huanglian on inhibiting tumor growth seems to be mediated by the selective suppression of cyclin B1, which results in the inhibition of cdc2 kinase activity. Inhibition of cyclin dependent kinase (cdk) activity is emerging as an attractive target for cancer chemotherapy. Huanglian represents a class of agents that can inhibit tumor cell growth by directly suppressing the expression of a cyclin subunit that is critical for cell cycle progression. These results indicate that traditional Chinese herbs may represent a new source of agents designed for selective inhibition of cyclin dependent kinases in cancer therapy.
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Affiliation(s)
- X K Li
- Gastrointestinal Oncology Research Laboratory for New Drug Development, Division of Solid Tumor Oncology, Department of Medicine, Memorial Sloan-Kettering Cancer Center, New York, New York, USA
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Li XK, Irvine T, Wanitkun S, Mori Y, Detmer PR, Li XN, Wu Y, Martin RW, Sahn DJ. Direct computation of multiple 3D flow convergence isovelocity surfaces from digital 3D reconstruction of colour Doppler data of the flow convergence region: an in vitro study with differently shaped orifices. Eur J Echocardiogr 2000; 1:244-51. [PMID: 11916601 DOI: 10.1053/euje.2000.0040] [Citation(s) in RCA: 11] [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: 11/11/2022]
Abstract
AIMS Evaluation of the accuracy of direct computation of multiple three-dimensional (3D) flow convergence (FC) isovelocities by using digital reconstruction of colour Doppler data of the flow convergence region. METHODS AND RESULTS We used a conventional ultrasound system (ATL HDI 3000) connected to a computer workstation via Ethernet link. The digital 3D datasets were directly transferred to a Silicon Graphic Imaging Octane workstation for later measurement. We generated nine pulsatile flows (20-60 ml/beat), with peak flow rates (67-180 ml/s), through three orifices (circular, rectangular and triangular, S=0.24 cm(2)). The 3D reconstructions of FC surface areas from multi-threshold velocities, including aliasing velocities were analysed to quantify the peak flow rate. For all orifices, linear regression demonstrated excellent correlation between the 3D calculated and electromagnetic flow meter recorded data. While there was a high correlation for 3D computation of flow rate from the single best Nyquist of 24 cm/s (r=0.97-0.98, SEE=7 .75-12.58 ml/s), the ability to average three threshold velocities (15, 18 and 24 cm/s) yielded an improved correlation (r=0.98-0.99, SEE=5.70-7.73 ml/s). CONCLUSIONS Direct computation of multiple 3D FC isovelocities from digital reconstruction of colour Doppler data of the FC region provides the potential to accurately quantify the complex asymmetric spatial flow events at any selected velocity.
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Affiliation(s)
- X K Li
- The Clinical Care Center for Congenital Heart Disease, Oregon Health Sciences University, Portland, OR 97201, USA
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Masaki Y, Suzuki K, Yan H, Li XK, Kitazawa Y, Amemiya H, Suzuki S, Goto T, Kimura H. Quantitative aspects of microchimerism after rat small bowel and pancreaticoduodenal transplantation. Transplant Proc 2000; 32:2483-4. [PMID: 11120257 DOI: 10.1016/s0041-1345(00)01756-5] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Y Masaki
- Department of Research Surgery, National Children's MRC, Tokyo, Japan
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45
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Ohba M, Li XK, Kita Y, Tamura A, Enosawa S, Sasakuri S, Ogoshi S, Amemiya H, Suzuki S. Perioperative administration of FTY720 and CTLA4IG in rat heart transplantation. Transplant Proc 2000; 32:2024-5. [PMID: 11120049 DOI: 10.1016/s0041-1345(00)01541-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- M Ohba
- Department of Experimental Surgery and Bioengineering, National Children's Medical Research Center, Tokyo, Japan
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46
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Hikino H, Miyagi T, Hua Y, Hirohisa S, Gold DP, Li XK, Fujino M, Tetsuya T, Amemiya H, Suzuki S, Robb L, Miyata M, Kimura H. GM-CSF-independent development of dendritic cells from bone marrow cells in the GM-CSF-receptor-deficient mouse. Transplant Proc 2000; 32:2458-9. [PMID: 11120243 DOI: 10.1016/s0041-1345(00)01742-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- H Hikino
- Department of Research Surgery, National Children Medical Research Center, Tokyo, Japan
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Kita Y, Li XK, Ohba M, Funeshima N, Enosawa S, Nogimura H, Ohi S, Kageyama Y, Matsushita K, Ito Y, Takahashi T, Suzuki K, Suzuki S, Kazui T. Adenoviral vectors containing the CTLA4IG-gene inhibit chronic rejection in heterotopically transplanted rat tracheas. Transplant Proc 2000; 32:2036-7. [PMID: 11120055 DOI: 10.1016/s0041-1345(00)01547-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Y Kita
- First Department of Surgery, Hamamatsu University School of Medicine, Hamamatsu, Japan
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Hua Y, Miyagi T, Saito H, Gold DP, Li XK, Fujino M, Taga T, Amemiya H, Suzuki S, Kokubo T, Kimura H. Cytokine requirement for the development of rat dendritic cells by in vitro culturing of bone marrow cells. Transplant Proc 2000; 32:2078-9. [PMID: 11120075 DOI: 10.1016/s0041-1345(00)01576-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- Y Hua
- Department of Research Surgery, National Children Medical Research Center, Tokyo, Japan
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Adachi K, Tamura A, Sugioka A, Morita M, Yan H, Li XK, Kitazawa Y, Amemiya H, Suzuki S, Miyata M, Kimura H. Evidence of regulatory T lymphocytes that constitute peripheral blood microchimerism following rat liver transplantation. Transplant Proc 2000; 32:2297-9. [PMID: 11120172 DOI: 10.1016/s0041-1345(00)01671-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- K Adachi
- Department of Research Surgery, National Children's Medical Research Center, Tokyo, Japan
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50
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Adachi K, Li XK, Guo L, Fujino M, Funeshima N, Kimura H, Amemiya H, Suzuki S. High efficacy of gene transfer and expression using adenovirus vector in the rat liver transplantation model. Transplant Proc 2000; 32:2514-5. [PMID: 11120273 DOI: 10.1016/s0041-1345(00)01772-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- K Adachi
- Department of Experimental Surgery and Bioengineering, National Children's Medical Research Center, Tokyo, Japan
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