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Zhang M, Wu P, Duan YL, Jin L, Yang J, Huang S, Liu Y, Hu B, Zhai XW, Wang HS, Fu Y, Li F, Yang XM, Liu AS, Qin S, Yuan XJ, Dong YS, Liu W, Zhou JW, Zhang LP, Jia YP, Wang J, Qu LJ, Dai YP, Guan GT, Sun LR, Jiang J, Liu R, Jin RM, Wang ZJ, Wang XG, Zhang BX, Chen KL, Zhuang SQ, Zhang J, Zhou CJ, Gao ZF, Zheng MC, Zhang Y. [Mid-term efficacy of China Net Childhood Lymphoma-mature B-cell lymphoma 2017 regimen in the treatment of pediatric Burkitt lymphoma]. Zhonghua Er Ke Za Zhi 2022; 60:1011-1018. [PMID: 36207847 DOI: 10.3760/cma.j.cn112140-20220429-00390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Objective: To analyze the clinical characteristics of children with Burkitt lymphoma (BL) and to summarize the mid-term efficacy of China Net Childhood Lymphoma-mature B-cell lymphoma 2017 (CNCL-B-NHL-2017) regimen. Methods: Clinical features of 436 BL patients who were ≤18 years old and treated with the CNCL-B-NHL-2017 regimen from May 2017 to April 2021 were analyzed retrospectively. Clinical characteristics of patients at disease onset were analyzed and the therapeutic effects of patients with different clinical stages and risk groups were compared. Survival analysis was performed by Kaplan-Meier method, and Cox regression was used to identify the prognostic factors. Results: Among 436 patients, there were 368 (84.4%) males and 68 (15.6%) females, the age of disease onset was 6.0 (4.0, 9.0) years old. According to the St. Jude staging system, there were 4 patients (0.9%) with stage Ⅰ, 30 patients (6.9%) with stage Ⅱ, 217 patients (49.8%) with stage Ⅲ, and 185 patients (42.4%) with stage Ⅳ. All patients were stratified into following risk groups: group A (n=1, 0.2%), group B1 (n=46, 10.6%), group B2 (n=19, 4.4%), group C1 (n=285, 65.4%), group C2 (n=85, 19.5%). Sixty-three patients (14.4%) were treated with chemotherapy only and 373 patients (85.6%) were treated with chemotherapy combined with rituximab. Twenty-one patients (4.8%) suffered from progressive disease, 3 patients (0.7%) relapsed, and 13 patients (3.0%) died of treatment-related complications. The follow-up time of all patients was 24.0 (13.0, 35.0) months, the 2-year event free survival (EFS) rate of all patients was (90.9±1.4) %. The 2-year EFS rates of group A, B1, B2, C1 and C2 were 100.0%, 100.0%, (94.7±5.1) %, (90.7±1.7) % and (85.9±4.0) %, respectively. The 2-year EFS rates was higher in group A, B1, and B2 than those in group C1 (χ2=4.16, P=0.041) and group C2 (χ2=7.21, P=0.007). The 2-year EFS rates of the patients treated with chemotherapy alone and those treated with chemotherapy combined with rituximab were (79.3±5.1)% and (92.9±1.4)% (χ2=14.23, P<0.001) respectively. Multivariate analysis showed that stage Ⅳ (including leukemia stage), serum lactate dehydrogenase (LDH)>4-fold normal value, and with residual tumor in the mid-term evaluation were risk factors for poor prognosis (HR=1.38,1.23,8.52,95%CI 1.05-1.82,1.05-1.43,3.96-18.30). Conclusions: The CNCL-B-NHL-2017 regimen show significant effect in the treatment of pediatric BL. The combination of rituximab improve the efficacy further.
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Affiliation(s)
- M Zhang
- Medical Oncology Department, Pediatric Oncology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
| | - P Wu
- Department of Hematology, Hunan Children's Hospital, Changsha 410007, China
| | - Y L Duan
- Medical Oncology Department, Pediatric Oncology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
| | - L Jin
- Medical Oncology Department, Pediatric Oncology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
| | - J Yang
- Medical Oncology Department, Pediatric Oncology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
| | - S Huang
- Medical Oncology Department, Pediatric Oncology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
| | - Y Liu
- Department of Pediatric Lymphoma, Beijing GoBroad Boren Hospital, Beijing 100070, China
| | - B Hu
- Department of Pediatric Lymphoma, Beijing GoBroad Boren Hospital, Beijing 100070, China
| | - X W Zhai
- Department of Hematology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - H S Wang
- Department of Hematology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - Y Fu
- Department of Hematology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - F Li
- Hematology & Oncology Department, Children's Hospital Affiliated to Shandong University, Jinan 250022, China
| | - X M Yang
- Hematology & Oncology Department, Children's Hospital Affiliated to Shandong University, Jinan 250022, China
| | - A S Liu
- Department of Hematology & Oncology, Xi'an Children's Hospital, Xi'an 710002, China
| | - S Qin
- Department of Hematology & Oncology, Xi'an Children's Hospital, Xi'an 710002, China
| | - X J Yuan
- Department of Pediatric Hematology/Oncology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - Y S Dong
- Department of Pediatric Hematology/Oncology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - W Liu
- Department of Hematology & Oncology, Zhengzhou Children's Hospital, Zhengzhou 450018, China
| | - J W Zhou
- Department of Hematology & Oncology, Zhengzhou Children's Hospital, Zhengzhou 450018, China
| | - L P Zhang
- Department of Pediatrics, Peking University People's Hospital, Beijing 100044, China
| | - Y P Jia
- Department of Pediatrics, Peking University People's Hospital, Beijing 100044, China
| | - J Wang
- Department of Hematology & Oncology, Anhui Children's Hospital, Hefei 230022, China
| | - L J Qu
- Department of Hematology & Oncology, Anhui Children's Hospital, Hefei 230022, China
| | - Y P Dai
- Department of Pediatric Hematology & Endocrinology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, China
| | - G T Guan
- Department of Pediatric Hematology & Endocrinology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, China
| | - L R Sun
- Department of Pediatric Hematology & Oncology, the Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - J Jiang
- Department of Pediatric Hematology & Oncology, the Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - R Liu
- Department of Hematology, Children's Hospital, Capital Pediatric Research Institute, Beijing 100020, China
| | - R M Jin
- Department of Pediatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Z J Wang
- Department of Pediatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - X G Wang
- Department of Hematology and Oncology, Third Affiliated Hospital of Zhengzhou University, Zhengzhou 450052
| | - B X Zhang
- Department of Pediatrics, Second Hospital of Hebei Medical University, Shijiazhuang 050004, China
| | - K L Chen
- Department of Hematology and Oncology, Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430016, China
| | - S Q Zhuang
- Department of Pediatrics, First Hospital of Quanzhou Affiliated to Fujian Medical University, Quanzhou 362002, China
| | - J Zhang
- Department of Hematology & Oncology, the First People's Hospital of Urumqi, Urumqi 830002, China
| | - C J Zhou
- Pathology Department, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - Z F Gao
- Department of Pathology, Peking University Third Hospital, Beijing 100191, China
| | - M C Zheng
- Department of Hematology, Hunan Children's Hospital, Changsha 410007, China
| | - Yonghong Zhang
- Medical Oncology Department, Pediatric Oncology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
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Harrar DB, Sun LR, Goss M, Pearl MS. Cerebral Digital Subtraction Angiography in Acute Intracranial Hemorrhage: Considerations in Critically Ill Children. J Child Neurol 2022; 37:693-701. [PMID: 35673704 DOI: 10.1177/08830738221106818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Cerebrovascular disorders are an important cause of morbidity and mortality in children. Although minimally invasive, cerebral digital subtraction angiography (DSA) has been shown to be safe in children and is a valuable, and perhaps underutilized, technique for the diagnosis and management of pediatric cerebrovascular disorders in the critical care setting. Through a case-based approach, we explore the utility of DSA in critically ill children with acute intracranial hemorrhage (ICH). We discuss the use of DSA in the acute management of aneurysm and arteriovenous malformation rupture as well as cerebral vasospasm. Those caring for critically ill children with acute ICH should consider cerebral DSA as part of a comprehensive approach to the diagnosis and management of these conditions.
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Affiliation(s)
- D B Harrar
- Division of Neurology, 8404Children's National Hospital, George Washington University School of Medicine, Washington, DC, USA
| | - L R Sun
- Division of Neurology, Johns Hopkins Hospital, Baltimore, MD, USA
| | - M Goss
- Division of Neurology, 72462Dell Children's Hospital, Austin, TX, USA
| | - M S Pearl
- Department of Radiology, 8404Children's National Hospital, Washington, DC, USA
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Zhang AA, Tang JY, Xu M, Fang YJ, Yan J, Gao J, Yuan XJ, Li F, Ju XL, Liu W, Wu XJ, Sun LR, Jiang L, Zhang WL, Chu JH, Lu XY. [Multicenter clinical study on the diagnosis and treatment of childhood renal tumor]. Zhonghua Er Ke Za Zhi 2021; 59:195-200. [PMID: 33657693 DOI: 10.3760/cma.j.cn112140-20200707-00698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To summarize the effect of Chinese Children's Cancer Group (CCCG) Wilms tumor (WT)-2015 protocol. Methods: This was a prospective study. CCCG-WT-2015 protocol was revised on the basis of the CCCG-WT-2009 protocol. Clinical data of 288 children diagnosed with newly diagnosed kidney neoplasms in fourteen pediatric centers between September 2015 to December 2018 were summarized. The age of onset, distribution of pathological subtypes, staging, curative effect and prognostic factors of these children were analyzed. Kaplan-Meier method was used for survival curve and Log-Rank method was used for univariate analysis. Results: Among 288 cases with kidney neoplasms, there were 261 cases of WT, including 254 cases (97.3%) with favorable histology (FH) WT and 7 cases (2.7%) with unfavorable histology WT (UFHWT). The 3 year events free survival (EFS) rate for FHWT and UFHWT were (88.9±2.1)% and (80.0±17.9)%, which were better than that in WT-2009 (81.2% and 71.7%). In the 96 cases of stage Ⅲ/Ⅳ FHWT with indications for radiotherapy, 76 cases received radiation, another 20 cases received M protocol chemotherapy (cyclophosphamide, etoposide, gentamycin, vincristine and adriamycin) instead of radiation. The 3 year EFS rate for these two groups were (84.7±4.3)% and (84.7±8.1)%(χ2=0.015, P=0.902). There were 22 renal clear cell sarcoma and 5 malignant rhabdoid tumor, 3 year EFS rate of them was (94.4±5.4)% and (20.0±17.9)%. Univariate analysis was performed for age, gender, pathological type, stage, whether rupture occurred during operation, whether complete remission (CR) occurred at the end of treatment and radiotherapy. Pathological types (χ2=44.329,P<0.01) and failure to achieve CR at the end of the treatment (χ2=49.459,P<0.01) were independent factor for predicting survival. Conclusion: Compared with CCCG-WT-2009, treatment of renal tumors in CCCG-WT-2015 study yielded good survival outcome, which can be further applied.
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Affiliation(s)
- A A Zhang
- Department of Hematology and Oncology, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - J Y Tang
- Department of Hematology and Oncology, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - M Xu
- Department of Oncology Surgery, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Y J Fang
- Department of Hematology and Oncology, Children's Hospital of Nanjing Medical University,Nanjing 210008, China
| | - J Yan
- Department of Oncology, Tianjin Medical University Cancer Hospital,Tianjin 300020, China
| | - J Gao
- Department of Hematology and Oncology, West China Second University Hospital, Sichuan University, Chengdu 610041, China
| | - X J Yuan
- Department of Pediatric Hematology and Oncology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - F Li
- Department of Hematology and Oncology, Qilu Children's Hospital of Shandong University, Jinan 250022, China
| | - X L Ju
- Department of Pediatrics, Qilu Hospital of Shandong University, Jinan 250012, China
| | - W Liu
- Department of Hematology and Oncology, Henan Children's Hospital,Zhengzhou 450018, China
| | - X J Wu
- Department of Pediatric Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430032, China
| | - L R Sun
- Department of Pediatrics, the Affiliated Hospital of Qingdao University, Qingdao 266555, China
| | - L Jiang
- Department of Pediatrics, the Fourth Hospital of Hebei Medical University,Shijiazhuang 050000, China
| | - W L Zhang
- Department of Pediatric Hematology and Oncology,the Affiliated Hospital of Zhengzhou University, Zhengzhou 450008, China
| | - J H Chu
- Department of Pediatrics, the Second Hospital of Anhui Medical University,Hefei 230601, China
| | - X Y Lu
- Department of Oncology Surgery, Children's Hospital of Anhui Medical University, Hefei 230022, China
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Sun LR, Li SY, Guo QS, Zhou W, Zhang HM. SPOCK1 Involvement in Epithelial-to-Mesenchymal Transition: A New Target in Cancer Therapy? Cancer Manag Res 2020; 12:3561-3569. [PMID: 32547193 PMCID: PMC7244346 DOI: 10.2147/cmar.s249754] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 04/22/2020] [Indexed: 12/24/2022] Open
Abstract
Background Cancer metastasis is the main obstacle to increasing the lifespan of cancer patients. Epithelial-to-mesenchymal transition (EMT) plays a significant role in oncogenic processes, including tumor invasion, intravasation, and micrometastasis formation, and is especially critical for cancer invasion and metastasis. The extracellular matrix (ECM) plays a crucial role in the occurrence of EMT corresponding to the change in adhesion between cells and matrices. Conclusion SPOCK1 is a critical regulator of the ECM and mediates EMT in cancer cells. This suggests an important role for SPOCK1 in tumorigenesis, migration and invasion. SPOCK1 is a critical regulator of some processes involved in cancer progression, including cancer cell proliferation, apoptosis and migration. Herein, the functions of SPOCK1 in cancer progression are expounded, revealing the association between SPOCK1 and EMT in cancer metastasis. SPOCK1 is a positive downstream regulator of transforming growth factor-β, and SPOCK1-mediated EMT regulates invasion and metastasis through the Wnt/β-catenin pathway and PI3K/Akt signaling pathway. It is of significance that SPOCK1 may be an attractive prognostic biomarker and therapeutic target in cancer treatment.
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Affiliation(s)
- Li-Rui Sun
- Department of Pharmacy, The First Hospital of Jilin University, Changchun, Jilin, People's Republic of China
| | - Si-Yu Li
- Department of Pathology, Hangzhou Third Hospital, Hangzhou, Zhejiang, People's Republic of China
| | - Qiu-Shi Guo
- Department of Pharmacy, The First Hospital of Jilin University, Changchun, Jilin, People's Republic of China
| | - Wei Zhou
- Department of Pharmacy, The First Hospital of Jilin University, Changchun, Jilin, People's Republic of China
| | - Hong-Mei Zhang
- Department of Pharmacy, The First Hospital of Jilin University, Changchun, Jilin, People's Republic of China
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Sun LR, Zhou W, Zhang HM, Guo QS, Yang W, Li BJ, Sun ZH, Gao SH, Cui RJ. Modulation of Multiple Signaling Pathways of the Plant-Derived Natural Products in Cancer. Front Oncol 2019; 9:1153. [PMID: 31781485 PMCID: PMC6856297 DOI: 10.3389/fonc.2019.01153] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Accepted: 10/16/2019] [Indexed: 12/24/2022] Open
Abstract
Natural compounds are highly effective anticancer chemotherapeutic agents, and the targets of plant-derived anticancer agents have been widely reported. In this review, we focus on the main signaling pathways of apoptosis, proliferation, invasion, and metastasis that are regulated by polyphenols, alkaloids, saponins, and polysaccharides. Alkaloids primarily affect apoptosis-related pathways, while polysaccharides primarily target pathways related to proliferation, invasion, and metastasis. Other compounds, such as flavonoids and saponins, affect all of these aspects. The association between compound structures and signaling pathways may play a critical role in drug discovery.
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Affiliation(s)
- Li-Rui Sun
- Department of Pharmacy, The First Hospital of Jilin University, Changchun, China
| | - Wei Zhou
- Department of Pharmacy, The First Hospital of Jilin University, Changchun, China
| | - Hong-Mei Zhang
- Department of Pharmacy, The First Hospital of Jilin University, Changchun, China
| | - Qiu-Shi Guo
- Department of Pharmacy, The First Hospital of Jilin University, Changchun, China
| | - Wei Yang
- Jilin Provincial Key Laboratory on Molecular and Chemical Genetic, The Second Hospital of Jilin University, Changchun, China
| | - Bing-Jin Li
- Jilin Provincial Key Laboratory on Molecular and Chemical Genetic, The Second Hospital of Jilin University, Changchun, China
| | - Zhi-Hui Sun
- Department of Pharmacy, The First Hospital of Jilin University, Changchun, China
| | - Shuo-Hui Gao
- Department of Gastrointestinal Colorectal Surgery, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Ran-Ji Cui
- Jilin Provincial Key Laboratory on Molecular and Chemical Genetic, The Second Hospital of Jilin University, Changchun, China
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Xin JY, Sun LR, Lin HY, Zhang S, Xia CG. Hybridization of Particulate Methane Monooxygenase by Methanobactin-Modified AuNPs. Molecules 2019; 24:E4027. [PMID: 31703299 PMCID: PMC6891627 DOI: 10.3390/molecules24224027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 10/28/2019] [Accepted: 11/05/2019] [Indexed: 11/16/2022] Open
Abstract
Particulate methane monooxygenase (pMMO) is a characteristic membrane-bound metalloenzyme of methane-oxidizing bacteria that can catalyze the bioconversion of methane to methanol. However, in order to achieve pMMO-based continuous methane-to-methanol bioconversion, the problems of reducing power in vitro regeneration and pMMO stability need to be overcome. Methanobactin (Mb) is a small copper-chelating molecule that functions not only as electron carrier for pMMO catalysis and pMMO protector against oxygen radicals, but also as an agent for copper acquisition and uptake. In order to improve the activity and stability of pMMO, methanobactin-Cu (Mb-Cu)-modified gold nanoparticle (AuNP)-pMMO nanobiohybrids were straightforwardly synthesized via in situ reduction of HAuCl4 to AuNPs in a membrane fraction before further association with Mb-Cu. Mb-Cu modification can greatly improve the activity and stability of pMMO in the AuNP-pMMO nanobiohybrids. It is shown that the Mb-Cu-modified AuNP-pMMO nanobiohybrids can persistently catalyze the conversion of methane to methanol with hydroquinone as electron donor. The artificial heterogeneous nanobiohybrids exhibited excellent reusability and reproducibility in three cycles of catalysis, and they provide a model for achieving hydroquinone-driven conversion of methane to methanol.
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Affiliation(s)
- Jia-Ying Xin
- Key Laboratory of Food Science and Engineering, Harbin University of Commerce, Harbin 150076, China
- State Key Laboratory of Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Li-Rui Sun
- Key Laboratory of Food Science and Engineering, Harbin University of Commerce, Harbin 150076, China
| | - Hui-Ying Lin
- Key Laboratory of Food Science and Engineering, Harbin University of Commerce, Harbin 150076, China
| | - Shuai Zhang
- Key Laboratory of Food Science and Engineering, Harbin University of Commerce, Harbin 150076, China
| | - Chun-Gu Xia
- State Key Laboratory of Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
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Cong XY, Miao JK, Zhang HZ, Sun WH, Xing LH, Sun LR, Zu L, Gao Y, Leng KL. Effects of Drying Methods on the Content, Structural Isomers, and Composition of Astaxanthin in Antarctic Krill. ACS Omega 2019; 4:17972-17980. [PMID: 31720501 PMCID: PMC6843707 DOI: 10.1021/acsomega.9b01294] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Accepted: 09/06/2019] [Indexed: 06/10/2023]
Abstract
Antarctic krill (Euphausia superba) is one of the important bioresources in Antarctic waters, containing many bioactives (e.g., astaxanthin), which have a highly potential value for commercial exploitation. In this study, the effects of processing methods on the content, structural isomers, and composition of astaxanthins (free astaxanthin and astaxanthin esters) were studied. Three drying methods, comprising freeze-drying, microwave drying, and hot-air drying, were used. Free astaxanthin (Ast), astaxanthin monoesters (AM), and astaxanthin diesters (AD) in boiled krill (control) and dried krill were extracted and analyzed using high-resolution mass spectrometry with ultraviolet detection. After the three processes, total astaxanthin loss ranged from 8.6 to 64.9%, and the AM and AD contents ranged from 78.3 to 16.6 and 168.7 to 90.5 μg/g, respectively. Compared to other kinds of astaxanthin esters, astaxanthin esters, which linked to eicosapentaenoic acid and docosahexaenoic acid, as well as the Ast, were more easily degraded, and AM was more susceptible to degradation than AD. All-E-astaxanthin easily transformed to the 13Z-astaxanthin than to the 9Z-astaxanthin during the drying process, but the proportions of optical isomers changed due to drying by no more than 5%. The results suggested that freeze-drying, low-power microwave drying (≤1 kW), and low-temperature hot-air drying (≤60 °C) are optimal drying methods for ensuring the quality of krill products.
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Affiliation(s)
- Xin-Yuan Cong
- School
of Public Health Qingdao, Qingdao University, Qingdao 266071, China
- Yellow
Sea Fishery Research Institute, Chinese
Academy of Fishery Sciences, Key Laboratory of Sustainable Development
of Polar Fishery, Ministry of Agriculture, 106 Nanjing Road, Qingdao 266071, Shandong, China
| | - Jun-Kui Miao
- Yellow
Sea Fishery Research Institute, Chinese
Academy of Fishery Sciences, Key Laboratory of Sustainable Development
of Polar Fishery, Ministry of Agriculture, 106 Nanjing Road, Qingdao 266071, Shandong, China
- Qingdao
Engineering Research Center of Exploitation of Polar Fishery Resource, 106 Nanjing Road, Qingdao 266071, Shandong, China
| | - Hui-Zhen Zhang
- Qingdao
Food and Drug Administration, Qingdao 266100, Shandong, China
| | - Wei-Hong Sun
- Yellow
Sea Fishery Research Institute, Chinese
Academy of Fishery Sciences, Key Laboratory of Sustainable Development
of Polar Fishery, Ministry of Agriculture, 106 Nanjing Road, Qingdao 266071, Shandong, China
| | - Li-Hong Xing
- Yellow
Sea Fishery Research Institute, Chinese
Academy of Fishery Sciences, Key Laboratory of Sustainable Development
of Polar Fishery, Ministry of Agriculture, 106 Nanjing Road, Qingdao 266071, Shandong, China
| | - Li-Rui Sun
- Department
of Food Science and Engineering, Ocean University
of China, 5 Yushan Road, Qingdao 266003, Shandong, China
| | - Lu Zu
- Yellow
Sea Fishery Research Institute, Chinese
Academy of Fishery Sciences, Key Laboratory of Sustainable Development
of Polar Fishery, Ministry of Agriculture, 106 Nanjing Road, Qingdao 266071, Shandong, China
- Key
Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, Shanghai Ocean University, Shanghai 201306, China
| | - Yan Gao
- Yellow
Sea Fishery Research Institute, Chinese
Academy of Fishery Sciences, Key Laboratory of Sustainable Development
of Polar Fishery, Ministry of Agriculture, 106 Nanjing Road, Qingdao 266071, Shandong, China
- Key
Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, Shanghai Ocean University, Shanghai 201306, China
| | - Kai-Liang Leng
- Yellow
Sea Fishery Research Institute, Chinese
Academy of Fishery Sciences, Key Laboratory of Sustainable Development
of Polar Fishery, Ministry of Agriculture, 106 Nanjing Road, Qingdao 266071, Shandong, China
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Zhang HM, Zhao XH, Sun ZH, Li GC, Liu GC, Sun LR, Hou JQ, Zhou W. Recognition of the toxicity of aristolochic acid. J Clin Pharm Ther 2018; 44:157-162. [PMID: 30548302 DOI: 10.1111/jcpt.12789] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 10/28/2018] [Accepted: 11/20/2018] [Indexed: 12/16/2022]
Abstract
WHAT IS KNOWN AND OBJECTIVE Aristolochic acid (AA) is an abundant compound in Aristolochia plants and various natural herbs. In the 1990s, a slimming formula used in Belgium that contains Aristolochia fangchi was reported to cause kidney damage and bladder cancer, and aristolochic acid nephropathy (AAN) is now well recognized worldwide. In October 2017, researchers reported an AA signature that is closely associated with hepatocellular carcinoma (HCC) worldwide. COMMENT There are differing opinions on the toxicity of AA, and different countries have taken different measures to address the issue. There is a lack of clarity on the causal role of AA in hepatocarcinogenesis and on the potential underlying mechanisms for the reported nephrotoxicity and carcinogenicity. The toxicity of AA differs depending on gender and age, and other risk factors that could explain the variability in the toxicity of AA remain to be identified. WHAT IS NEW AND CONCLUSION Whether preparations containing AA, such as many Chinese medicines, should be used remains controversial, and this issue warrants further investigation before definite conclusions can be drawn.
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Affiliation(s)
- Hong-Mei Zhang
- Department of Pharmacy, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Xiao-Hu Zhao
- Jilin Provincial Institute for Drug Control, Changchun, Jilin, China
| | - Zhi-Hui Sun
- Department of Pharmacy, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Gui-Chen Li
- Department of Neurology, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Guang-Chen Liu
- Department of Orthopaedic Trauma, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Li-Rui Sun
- Department of Pharmacy, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Ji-Qiu Hou
- Department of Pharmacy, The Second Hospital of Jilin University, Changchun, Jilin, China
| | - Wei Zhou
- Department of Pharmacy, The First Hospital of Jilin University, Changchun, Jilin, China
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Cai JY, Wang NL, Jiang H, Shen SH, Xue HL, Chen J, Pan C, Gao YJ, Sun LR, Yuan XJ, Gu LJ, Tang JY. [Long-term results of multicenter study based on childhood acute lymphoblastic leukemia 2005 protocol]. Zhonghua Er Ke Za Zhi 2018; 56:511-517. [PMID: 29996184 DOI: 10.3760/cma.j.issn.0578-1310.2018.07.008] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the long-term efficacy and prognostic factors of childhood acute lymphoblastic leukemia (ALL) enrolled in Shanghai Children's Medical Center-Acute Lymphoblastic Leukemia-2005(SCMC-ALL-2005) multicenter study. Methods: Between May 2005 and December 2014, 1 497 newly diagnosed ALL patients were enrolled and treated in 5 hospitals of SCMC-ALL-2005 study group, using risk-stratified SCMC-ALL-2005 protocol. Risk group classification and treatment intensity were based on clinical features, genetic abnormalities, early response to treatment and levels of minimal residual disease (MRD). Kaplan-Meier method was used to generate overall survival (OS) and event-free survival(EFS) curves. Cox proportional hazards models were used for multivariate analyses. Results: The patients were followed up to December 31, 2016, the median follow-up time was 69 months (24-141 months). The 5-year and 10-year OS rates were (80.0±1.0)% and (76.0±2.0)%. The 5-year and 10-year EFS rates were (69.0±1.0)% and (66.0±2.0)%. The 5-year and 10-year relapse rates were (23.0±1.0)% and (25.0±2.0)%. The 5-year OS and EFS for low risk (LR), intermediate risk (IR) and high risk (HR) were (91.1±1.4)% and (83.3±1.8)%, (79.2±1.5)% and (68.9±1.7)%, (52.9±4.4)% and (30.0±3.8)%, respectively. MRD negative status (<0.01%) on day 55 was seen in 792 patients (82.8%) and positive MRD on day 55 was associated with poor prognosis (OR=1.9, 95%CI: 1.3-2.7, P=0.001). Twenty-four HR patients received allogeneic hematopoietic stem cell transplantation and 17(70.8%) of them were alive and in remission. A total of 164 severe adverse events occurred, 46 of them died, treatment-related mortality was 3.1%. Conclusions: In this large sample research, the overall outcome for multi-center SCMC-ALL-2005 study was favorable. This helps to promote the standardized treatment of childhood ALL to the whole country. MRD results on day 55 of induction therapy have important prognostic and therapeutic implications.
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Affiliation(s)
- J Y Cai
- Department of Hematology/Oncology, Shanghai Children's Medical Center, Shanghai Jiao Tong University, School of Medicine, Key Lab of Pediatric Hematology & Oncology of China Ministry of Health, Shanghai 200127, China
| | - N L Wang
- Department of Pediatrics, Anhui Medical University Second Affiliated Hospital, Hefei 230000, China
| | - H Jiang
- Department of Hematology and Oncology, Children's Hospital Affiliated to Shanghai Jiao Tong University, Shanghai 200040, China
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Tang L, Xu W, Li CG, Hou F, Feng XQ, Wang H, Li XJ, Li WL, Liu JP, Sun LR, Wang SH, Jin J, Fang Q, Luke KH, Poon MC, Blanchette VS, Usuba K, Young NL, Wu R. Describing the quality of life of boys with haemophilia in China: Results of a multicentre study using the CHO-KLAT. Haemophilia 2017; 24:113-119. [PMID: 28922525 DOI: 10.1111/hae.13349] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/21/2017] [Indexed: 11/30/2022]
Abstract
INTRODUCTION The treatment of haemophilia varies across countries and across regions within some countries. Similar variation has been observed in health-related quality of life (HR-QoL). Relatively little is known about the HR-QoL of boys with haemophilia in China. AIM The aim of this study was to describe the HR-QoL of boys with haemophilia in China using the Canadian Haemophilia Outcomes-Kids Life Assessment Tool (CHO-KLAT). METHODS Boys (4-18 years of age) with haemophilia and their parents were enroled in a cross-sectional study. All parents/guardians of study subjects were requested to complete a CHO-KLAT questionnaire during a clinic visit, and report on several other clinical and socioeconomic factors in the past year. Boys who were > 7 years also completed the CHO-KLAT. RESULTS A total of 269 parents of boys with haemophilia, from 13 hospitals in 12 provinces, were enroled during 2014. The boys ranged from 4.0 to 17.9 years of age; 91% had haemophilia A, most had moderate (52%) or severe (36%) disease, and most were receiving sub-optimal on-demand therapy or low-dose prophylactic therapy. Child self-report CHO-KLAT scores were available for 171 boys ≥7 years of age and ranged from 24.2 to 85.3 with a mean of 57.6 (n = 171). Parent proxy-reported CHO-KLAT scores ranged from 25.0 to 88.7 with a mean of 55.1 (n = 269). CONCLUSION HR-QoL scores in boys with haemophilia in China were substantially lower than reported from Canadian and European boys with haemophilia. Longer term prospective studies are required to examine the factors impacting the HR-QoL for boys with haemophilia in China.
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Affiliation(s)
- L Tang
- Hematology and Oncology Center, Beijing Children's Hospital Affiliated to Capital Medical University, Beijing, China
| | - W Xu
- Hematology Department, School of Medicine, Children's Hospital of Zhejiang University, Hangzhou, China
| | - C G Li
- Hematology& Oncology Department, Shenzhen Children's Hospital, Shenzhen, China
| | - F Hou
- Hematology Department, Shanxi Children's Hospital, Taiyuan, China
| | - X Q Feng
- Pediatric Department, Southern Medical University, Nanfang Hospital, Guangzhou, China
| | - H Wang
- Pediatric Department, Shengjing Hospital of China Medical University, Shenyang, China
| | - X J Li
- Pediatric Hematology and Oncology Department, Chengdu Women and Children's Central Hospital, Chengdu, China
| | - W L Li
- Hematology Department, Hunan Children's Hospital, Changsha, China
| | - J P Liu
- Pediatric Hematology Department, Inner Mongolia People's Hospital, Huhehaote, China
| | - L R Sun
- Pediatric Department, Shandong Province Hospital, Jinan, China
| | - S H Wang
- Hematology Department, Wulumuqi Children's Hospital, Wulumuqi, China
| | - J Jin
- Pediatric Department, Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Q Fang
- Hematology Department, Hebei Children's Hospital, Shijiazhuang, China
| | - K H Luke
- Department of Hematology, Children's Hospital of Eastern Ontario, Ottawa, Ontario, Canada
| | - M C Poon
- Department of Hematology, University of Calgary, Calgary, Alberta, Canada
| | - V S Blanchette
- Division of Hematology/Oncology, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - K Usuba
- ECHO Research Centre, Laurentian University, Sudbury, Ontario, Canada
| | - N L Young
- School of Rural and Northern Health and ECHO Research Centre, Laurentian University, Sudbury, Ontario, Canada
| | - R Wu
- Hematology and Oncology Center, Beijing Children's Hospital Affiliated to Capital Medical University, Beijing, China
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Wang Y, Xin JY, Li QH, Sun LR, Xia CG. Biosynthesis of (S)-naproxen starch ester by Carica papaya lipase in intermittent opening reaction mode. Pak J Pharm Sci 2017; 30:955-960. [PMID: 28655691] [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: 06/07/2023]
Abstract
Inorder to brought S-naproxen into small intestine, an optically pure (S)-naproxen starch ester was produced by lipase through enantio-selective trans-esterification of racemic naproxen methyl ester with pretreatment starch in solvent system. With carefully selection of the reaction medium (isooctane), lipase (Carica Papaya Lipase, CPL) and the reaction mode (intermittent opening), a high conversion rate (48.6%) and enantiomeric excess of product (99.6%) was obtained. The slow release macromolecular (S)-Naproxen had been synthesized to improve the efficacy of racemic naproxen and overcome its side effects. The enanitomeric ratio of CPL (E=52.5) was higher than CRL (E=22) and greatly influenced by the byproduct methyl alcohol. The intermittent opening reaction mode was the effective way to remove the inhibition of methyl alcohol and to improve the enantio-selectivity of CPL. S-naproxen starch was confirmed by HPLC and 1H NMR. This method may also apply to preparation the other optically pure 2-phenylpropionic acid derivatives. S-naproxen starch was a new optically pure derivatives possessing emulsifying and slow release properties would be widely applied to the food, pharmaceutical and biomedical industries.
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Affiliation(s)
- Yan Wang
- Key Laboratory for Food Science & Engineering, Harbin University of Commerce, Harbin, China
| | - Jia Ying Xin
- Key Laboratory for Food Science & Engineering, Harbin University of Commerce, Harbin, China / State Key Laboratory for Oxo Synthesis & Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, China
| | - Quan-Hui Li
- Key Laboratory for Food Science & Engineering, Harbin University of Commerce, Harbin, China
| | - Li-Rui Sun
- Key Laboratory for Food Science & Engineering, Harbin University of Commerce, Harbin, China
| | - Chun-Gu Xia
- State Key Laboratory for Oxo Synthesis & Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, China
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Cui LL, Wang JF, Xie KZ, Li AH, Geng TY, Sun LR, Liu JY, Zhao M, Zhang GX, Dai GJ, Wang JY. Analysis of meat flavor compounds in pedigree and two-strain Yangzhou geese. Poult Sci 2015; 94:2266-71. [PMID: 26188029 DOI: 10.3382/ps/pev179] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Accepted: 06/03/2015] [Indexed: 11/20/2022] Open
Abstract
In this study, we evaluated the meat flavor compounds of Yangzhou geese, including one group of pedigree strain (AA group) and 4 groups of 2-strain crossbreds (KA, KB, CA, and SA). Each group consisted of 100 geese comprised of 5 replicates of 10 males and 10 females each. Inosine 5'-monophosphate (IMP), amino acid (AA), and fatty acid (FA) levels in breast and thigh muscle were determined. Results showed that AA group had the highest levels of total amino acid (TAA) and dissolved free amino acids (DFAA) in breast muscle and of polyunsaturated fatty acids (PUFA) in thigh muscle (P<0.05). In SA group, the levels of C17:1, C22:0, C22:1, C20:4, and C24:1 in breast muscle were significantly higher in SA than in other groups (P<0.05). KB group had the lowest glycine levels in breast muscle (P<0.05) while MUFA levels were significantly higher in KB than in other groups (P<0.05). In KA, the levels of C18:3 in breast muscle in were higher than in CA and KB (P<0.05). CA had relevant higher IMPc levels in breast muscle than SA (P<0.05) and other groups (P>0.05); however, no significant differences were obtained in thigh muscle (P>0.05). In conclusion, Yangzhou AA goose has high levels of meat flavor compounds than its crossbreeds. Future efforts should focus on assessing meat flavor through measurement of sensory characteristics of Yangzhou geese.
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Affiliation(s)
- L L Cui
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China Key Laboratory for Animal Genetic, Breeding, Reproduction, and Molecular Design of Jiangsu Province, Yangzhou 225009, China
| | - J F Wang
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China Key Laboratory for Animal Genetic, Breeding, Reproduction, and Molecular Design of Jiangsu Province, Yangzhou 225009, China
| | - K Z Xie
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China Key Laboratory for Animal Genetic, Breeding, Reproduction, and Molecular Design of Jiangsu Province, Yangzhou 225009, China
| | - A H Li
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China Key Laboratory for Animal Genetic, Breeding, Reproduction, and Molecular Design of Jiangsu Province, Yangzhou 225009, China
| | - T Y Geng
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China Key Laboratory for Animal Genetic, Breeding, Reproduction, and Molecular Design of Jiangsu Province, Yangzhou 225009, China
| | - L R Sun
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China Key Laboratory for Animal Genetic, Breeding, Reproduction, and Molecular Design of Jiangsu Province, Yangzhou 225009, China
| | - J Y Liu
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China Key Laboratory for Animal Genetic, Breeding, Reproduction, and Molecular Design of Jiangsu Province, Yangzhou 225009, China
| | - M Zhao
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China Key Laboratory for Animal Genetic, Breeding, Reproduction, and Molecular Design of Jiangsu Province, Yangzhou 225009, China
| | - G X Zhang
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China Key Laboratory for Animal Genetic, Breeding, Reproduction, and Molecular Design of Jiangsu Province, Yangzhou 225009, China
| | - G J Dai
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China Key Laboratory for Animal Genetic, Breeding, Reproduction, and Molecular Design of Jiangsu Province, Yangzhou 225009, China
| | - J Y Wang
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China Key Laboratory for Animal Genetic, Breeding, Reproduction, and Molecular Design of Jiangsu Province, Yangzhou 225009, China
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Sun LR, Zhong JL, Cui SX, Li X, Ward SG, Shi YQ, Zhang XF, Cheng YN, Gao JJ, Qu XJ. Modulation of P-glycoprotein activity by the substituted quinoxalinone compound QA3 in adriamycin-resistant K562/A02 cells. Pharmacol Rep 2010; 62:333-42. [PMID: 20508289 DOI: 10.1016/s1734-1140(10)70273-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2009] [Revised: 10/21/2009] [Indexed: 10/25/2022]
Abstract
QA3 is a derivative of the substituted 1,3-dimethyl-1H-quinoxalin-2-ones, which are compounds that may selectively antagonize P-glycoprotein (P-gp) in multidrug resistance (MDR) cancer cells. Our previous work identified QA3 as a candidate compound for reversing MDR in cancer cells. In the present study, we found that QA3 significantly decreases the intracellular level of ATP, stimulates ATPase activity in membrane microsomes and decreases protein kinase C (PKC) activity. These results indicated that QA3 inhibits P-gp activity by blocking ATP hydrolysis and ATP regeneration. Furthermore, QA3 triggered and increased adriamycin-induced K562/A02 cell apoptosis as evidenced by Annexin V-FITC plus PI staining.Western blot analysis showed that the levels of cleaved caspase-9 and cleaved caspase-3 proteins increased, and similarly, the levels of procaspase-9 and procaspase-3 decreased after QA3 treatment. Consequently, poly ADP-ribose polymerase (PARP) activity increased as evidenced by the presence of the PARP cleavage product in K562/A02 cells. QA3 also enhanced the potency of adriamycin against K562/A02 cells as demonstrated by increased apoptosis and activation of caspase-9,-3 and PARP. These data support the observation that P-gp activity is inhibited after QA3 treatment. Moreover, these results indicate that QA3 is a novel MDR reversal agent with potent inhibitory action against P-gp MDR cancer cells.
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Affiliation(s)
- Li-Rui Sun
- Department of Pharmacology, School of Pharmaceutical Sciences, Shandong University, Jinan, China
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Gao FJ, Cui SX, Chen MH, Cheng YN, Sun LR, Ward SG, Kokudo N, Tang W, Qu XJ. Des-gamma-carboxy prothrombin increases the expression of angiogenic factors in human hepatocellular carcinoma cells. Life Sci 2008; 83:815-20. [PMID: 18976674 DOI: 10.1016/j.lfs.2008.10.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2008] [Revised: 08/28/2008] [Accepted: 10/01/2008] [Indexed: 12/18/2022]
Abstract
AIMS Des-gamma-carboxyl prothrombin (DCP) is a serum protein produced by hepatocellular carcinoma (HCC) cells. The aim of this study was to evaluate the angiogenic activity of DCP in HCC cells. MAIN METHODS The proliferation of HCC cells was measured by 3-[4, 5-dimethylthiazol-2-yl]-2,5-diphenyl-tetrazolium bromide (MTT) assay. The growth of HCC cells was also evaluated in vivo by using the xenografts in nude mice. The enzyme-linked immunosorbent assay (ELISA) was employed to measure the levels of angiogenic factors in supernatant of cell culture. The expression of angiogenic factors was examined by Western blot analysis and immunohistochemical staining. KEY FINDINGS DCP displayed the stimulation of HCC cell growth in a dose (5-80 ng/ml) and time (24-96 h) dependent manner. The increase of cell growth was also observed in nude mice bearing well-established, palpable HepG2 and SMMC-7721 xenografts after 2 weeks administration of DCP. HCC cell growth was accompanied by the elevated levels of angiogenic factors. The levels of vascular endothelial growth factor (VEGF), transforming growth factor-alpha (TGF-alpha) and basic fibroblast growth factor (bFGF) in supernatant of SMMC-7721 cells were increased from 47, 126, and 60 pg/10(6) cells/24 h to 400, 208, and 298 pg/10(6) cells/24 h, respectively, after 72 h incubation with 80 ng/ml of DCP. The results of Western blot analysis and immunohistochemical staining of HCC xenografts also showed the significant increase of VEGF, TGF-alpha, and bFGF in HCC cells. SIGNIFICANCE These results provide the information that DCP is a type of growth factor in progression of HCC.
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Affiliation(s)
- Fu-Jun Gao
- Department of Pharmacology, School of Pharmaceutical Sciences, Shandong University, Jinan, Shandong, 250012, China
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Han YH, Lou HX, Ren DM, Sun LR, Ma B, Ji M. Stereoselective metabolism of silybin diastereoisomers in the glucuronidation process. J Pharm Biomed Anal 2004; 34:1071-8. [PMID: 15019041 DOI: 10.1016/j.jpba.2003.12.002] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2003] [Revised: 11/22/2003] [Accepted: 12/01/2003] [Indexed: 11/18/2022]
Abstract
A separation method for the hepatoprotective drug silybin and its metabolites by RP-HPLC was described. Based on this separation, the stereoselectivity of the metabolism of silybin was investigated by incubation of the drug and its two diastereoisomers with bovine liver microsomes. Information about the structures of these metabolites was obtained, using UV, HPLC/MS and NMR spectra. Four major metabolites (M(1), M(4) of silybin A and M(2), M(5) of silybin B), were prepared by preparative HPLC, and their configurations were accomplished by NMR spectra. A HPLC method was used to quantify the metabolites. The results showed that silybin was extensively metabolized and the major sites for glucuronidation were the C-20, C-7, at phenolic OH groups. Furthermore, the results obtained reveal that there was significant stereoselectivity in the glucuronidation process of silybin. Silybin B was glucuronidated at a more efficient rate than its diastereoisomer, and glucuronidation of silybin B was much preferred at the 20 position, while that of silybin A was similar at both 7 and 20 position.
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Affiliation(s)
- Y H Han
- School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China
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Qiang YL, Sun LR. [Textual research on the history of epidemic in Dandong trading port area, Liaoning Provice] (Chi). Zhonghua Yi Shi Za Zhi 2001; 19:160-2. [PMID: 11622194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
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Abstract
1. Effects of highly neurotoxic, inorganic lead ions (Pb2+) on voltage-dependent calcium channels were investigated with the use of the whole cell patch-clamp technique in bovine adrenal chromaffin cells maintained in short-term primary culture (1-5 days). 2. Extracellularly applied Pb2+ induced a concentration-dependent, reversible inhibition of Ca2+ currents, with an estimated IC50 approximately equal to 3.0 x 10(-7) M free Pb2+. 3. Elevation of the intracellular free Ca2+ concentration above 10(-8) M dose-dependently reduced the amplitude of the initial Ca2+ current and increased the exponential rate of current rundown. 4. Intracellularly applied Pb2+ prevented the Ca(2+)-dependent reduction of the initial Ca2+ current amplitude and altered the current rundown kinetics from exponential to linear. The effect was dose dependent and saturable, with an estimated EC50 approximately equal to 2.0 x 10(-10) M free Pb2+. 5. These results indicate that in contrast to extracellular blockade, intracellular Pb2+ promotes Ca2+ currents by attenuating the Ca(2+)-dependent, steady-state inactivation of calcium channels. This provides a novel mechanism through which Pb2+ may disrupt calcium signaling in chronically lead-exposed cells.
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Affiliation(s)
- L R Sun
- Department of Molecular and Cellular Physiology, University of Cincinnati College of Medicine, Ohio 45267-0576, USA
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Abstract
Inorganic lead (Pb2+) is a potent environmental toxin which adversely affects several aspects of neuronal and secretory cell function. In this report, we provide evidence that at subnanomolar concentrations, Pb2+ activates the outward K+ currents in bovine adrenal chromaffin cells. Whole-cell patch clamp combined with intracellular perfusion was employed to monitor outward K+ currents in bovine chromaffin cells before and after intracellular application of EGTA-Pb buffers. Intracellular Pb2+ > or = 10(-10) M enhanced the K(+)-currents in a concentration dependent manner, with apparent K0.5 approximately equal to 5 x 10(-10) M. Extracellular application of 40 nM Charybdotoxin (ChTX) blocked the Pb(2+)-dependent component of outward currents, suggesting that Pb2+ activates the large conductance Ca(2+)-dependent K+ channels.
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Affiliation(s)
- L R Sun
- Department of Molecular and Cellular Physiology, University of Cincinnati College of Medicine, OH 45267-0576
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