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Hu D, Zhou YY, Ma HB, Tao MM, Huang QZ, Yang ZZ, Zhou Q. Efficacy and safety of EGFR-TKIs in combination with angiogenesis inhibitors as first-line therapy for advanced EGFR-mutant non-small-cell lung cancer: a systematic review and meta-analysis. BMC Pulm Med 2023; 23:207. [PMID: 37316870 DOI: 10.1186/s12890-023-02472-x] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Accepted: 05/08/2023] [Indexed: 06/16/2023] Open
Abstract
BACKGROUND For patients with advanced non-small-cell lung cancer (NSCLC) with EGFR mutations, the suggested course of action is epidermal growth factor receptor-tyrosine kinase inhibitors (EGFR-TKIs). Even with a high disease control rate, a majority of patients develop acquired EGFR-TKIs resistance and eventually advance. To increase the benefits of treatment, clinical trials are increasingly exploring the value of EGFR-TKIs combined with angiogenesis inhibitors as a first-line treatment in advanced NSCLC carrying EGFR mutations. METHOD Using PubMed, EMBASE and Cochrane Library, to locate published full-text articles in print or online, a thorough literature search was done from the database's inception to February 2021. Additionally, oral presentation RCTs from ESMO and ASCO were obtained. We sifted out RCTs that used EGFR-TKIs along with angiogenesis inhibitors as first-line therapy for advanced EGFR-mutant NSCLC. ORR, AEs, OS, and PFS were the endpoints. Review Manager version 5.4.1 was used for data analysis. RESULTS One thousand eight hundred twenty-one patients were involved in 9 RCTs. According to the results, combining EGFR-TKIs with angiogenesis inhibitors therapy prolonged PFS of advanced EGFR-mutation NSCLC patients on the whole [HR:0.65 (95%CI: 0.59~0.73, P<0.00001)]. No significant statistical difference was identified between the combination group and single drug group in OS(P=0.20) and ORR (P=0.11). There are more adverse effects when EGFR-TKIs are used in combination with angiogenesis inhibitors than when used alone. CONCLUSION The combination of EGFR-TKIs and angiogenesis inhibitors prolonged PFS in patients with EGFR-mutant advanced NSCLC, but the OS and ORR benefit was not significant, and the risk of adverse events was higher, more pronounced with hypertension and proteinuria; PFS in subgroups suggested that the combination was associated with better PFS in the smoking, liver metastasis, and no brain metastasis groups, and the included studies suggested that the smoking group , liver metastasis group, and brain metastasis group may have a potential OS benefit.
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Affiliation(s)
- Di Hu
- The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
- Chongqing University Fuling Hospital, Chongqing, China
| | | | - Hong-Bo Ma
- Chongqing University Fuling Hospital, Chongqing, China
| | - Miao-Miao Tao
- Chongqing University Fuling Hospital, Chongqing, China
| | | | - Zhen-Zhou Yang
- The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China.
| | - Qi Zhou
- The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China.
- Chongqing University Fuling Hospital, Chongqing, China.
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Zhang JY, Zhang XY, Peng Y, Yang ZZ. [Current situation and research progress of quality of life evaluation scale in clinical application of lung cancer patients with brain metastasis]. Zhonghua Nei Ke Za Zhi 2022; 61:234-238. [PMID: 35090263 DOI: 10.3760/cma.j.cn112138-20210719-00491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Affiliation(s)
- J Y Zhang
- Cancer Center, the Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - X Y Zhang
- Cancer Center, the Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - Y Peng
- Cancer Center, the Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - Z Z Yang
- Cancer Center, the Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
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Wang TY, Yang ZZ, Chen JH, Liu Y, Kamar S, Chen QY, Yuan T, Yang XH, Zhang J, Wang C, Yadav SP, Shrestha S, Yang YH, Li DQ. [Clinical study of percutaneous vertebroplasty combined with (125)I seeds implantation in the treatment of patients with thoracic metastatic tumor complicated with posterior vertebral defect]. Zhonghua Zhong Liu Za Zhi 2021; 42:1056-1062. [PMID: 33342165 DOI: 10.3760/cma.j.cn112152-20200228-00145] [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 analyze the safety and efficacy of percutaneous vertebroplasty combined with interstitial implantation (125)I of seeds (PVPI) in the treatment of thoracic vertebroplasty with posterior vertebra defect. Methods: A retrospective analysis of the clinical data of 64 patients with thoracic spine metastases admitted to Yunnan Cancer Hospital from November 2017 to May 2019 was conducted, including 32 patients with posterior vertebra defect (experimental group) and 32 cases without (control group). Forty-two vertebral bodies of 32 patients in the experimental group were treated with improved PVPI surgery, which performed with the secondary sealing method and inclined puncture needle injection bone cement rotary filling technology, to reduce leakage. The 54 vertebral bodies of 32 patients in control group underwent PVPI. The two groups of patients were followed up on the second day, one month, three months and six months after the operation, and the short-term efficacy, long-term efficacy and safety indicators of the two groups were compared. Results: All 64 patients successfully completed the surgical treatment. The visual analogue scores and Karnofsky scores of the experimental group and the control group were improved to varying degrees on the second day, 1 month, 3 months and 6 months after the operation. There was no statistically significant difference between the two groups (P>0.05). The amount of bone cement in the experimental group and control group was (2.36±0.20) ml and (2.39±0.17) ml, and the difference was not statistically significant (P=0.482). The amount of (125)I seed implantation was (30.63±0.91) and (32.56±0.68), respectively, the difference was not statistically significant (P=0.925). The partial response rates of the study group and the control group were 81.3% and 87.5%, the stable disease rates were 12.5% and 9.4%, the differences were not statistically significant (P>0.05). The median overall survival (mOS) of the study group was 13 months, and the median progression-free survival (mPFS) was 8 months. The mOS of the control group was 14 months, and the mPFS was 8 months. The differences were not statistically significant (P>0.05). In the experimental group, 6 (14.3%) vertebral bodies had cement leakage, of which 2 (4.8%) were cement leakage at posterior vertebra, 4 (9.5%) were paravertebral cement leakage. Seven (13.0%) paravertebral cement leakage occurred in the control group. There was no significant difference in bone cement leakage between the two groups (P=0.097). Bone cement leakage in both groups did not cause serious complications such as spinal cord injury and paraplegia. Conclusion: The application of PVPI in the treatment of thoracic metastatic tumor patients with posterior vertebra defect can acquire better clinical efficacy and safety through conduction of the improved intraoperative technology and paying more attention to the control of bone cement distribution and other issues.
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Affiliation(s)
- T Y Wang
- Department of Orthopedics, the Third Affiliated Hospital of Kunming Medical University, Kunming 650118, China
| | - Z Z Yang
- Department of Orthopedics, the Third Affiliated Hospital of Kunming Medical University, Kunming 650118, China
| | - J H Chen
- Department of Orthopedics, the Third Affiliated Hospital of Kunming Medical University, Kunming 650118, China
| | - Y Liu
- Department of Orthopedics, the Third Affiliated Hospital of Kunming Medical University, Kunming 650118, China
| | - S Kamar
- Department of Orthopedics, the Third Affiliated Hospital of Kunming Medical University, Kunming 650118, China
| | - Q Y Chen
- Department of Orthopedics, the Third Affiliated Hospital of Kunming Medical University, Kunming 650118, China
| | - T Yuan
- Department of Orthopedics, the Third Affiliated Hospital of Kunming Medical University, Kunming 650118, China
| | - X H Yang
- Department of Bone Tumor, Changzheng Hospital, Navy Medical University, Shanghai 200003, China
| | - J Zhang
- Department of Orthopedics, the Third Affiliated Hospital of Kunming Medical University, Kunming 650118, China
| | - C Wang
- Department of Orthopedics, the Third Affiliated Hospital of Kunming Medical University, Kunming 650118, China
| | - S P Yadav
- Department of Orthopedics, the Third Affiliated Hospital of Kunming Medical University, Kunming 650118, China
| | - S Shrestha
- Department of Orthopedics, the Third Affiliated Hospital of Kunming Medical University, Kunming 650118, China
| | - Y H Yang
- Department of Orthopedics, the Third Affiliated Hospital of Kunming Medical University, Kunming 650118, China
| | - D Q Li
- Department of Orthopedics, the Third Affiliated Hospital of Kunming Medical University, Kunming 650118, China
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Chen YL, Meng L, Yan GL, Yang ZZ, Huang ZP, Zhang YS, Zhao Z, Wang CC, Bao Y, Xiang H, Yin H, Chen LF, Xiong YY, Wang L, Li WM. [Prognostic significance of early molecular response after second-line treatment with dasatinib of chronic myeloid leukemia patients]. Zhonghua Xue Ye Xue Za Zhi 2020; 40:608-611. [PMID: 32397028 PMCID: PMC7364892 DOI: 10.3760/cma.j.issn.0253-2727.2019.07.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Y L Chen
- Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - L Meng
- Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - G L Yan
- Xiangyang Central Hospital, Xiangyang 441021, China
| | - Z Z Yang
- Suizhou Central Hospital, Suizhou 441300, China
| | - Z P Huang
- Jingzhou Central Hospital, Jingzhou 434020, China
| | - Y S Zhang
- The First People's Hospital of Jingzhou, Jingzhou 434000, China
| | - Z Zhao
- MinDa Hospital Affiliated to Hubi Institute for Nationalities, Enshi 445000, China
| | - C C Wang
- Shiyan Taihe Hospital, Shiyan 442000, China
| | - Y Bao
- The First People's Hospital of Xiangyang, Xiangyang 441000, China
| | - H Xiang
- Central Hospital of Enshi Autonomous Prefecture, Enshi 445000, China
| | - H Yin
- Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - L F Chen
- Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Y Y Xiong
- Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - L Wang
- The First People's Hospital of Jingmen, Jingmen 448000, China
| | - W M Li
- Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
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Zhan Y, DU YT, Yang ZZ, Zhang CL, Qi XR. [Preparation and characterization of paclitaxel microspheres in situ gel and its antitumor efficacy by local injection]. Beijing Da Xue Xue Bao Yi Xue Ban 2019; 51:477-486. [PMID: 31209419 DOI: 10.19723/j.issn.1671-167x.2019.03.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE The current difficulties in the treatment of tumor include repeated administration and high recurrence rate after tumor resection. In order to reduce the number of doses, avoid side effects of chemotherapeutic drugs, suppress tumor growth and delay tumor recurrence after surgery, a temperature-sensitive in situ gel with paclitaxel microspheres (PTX/M gel) was prepared. PTX/M gel was administered by intratumoral injection once a month. METHODS First of all, paclitaxel microspheres (PTX/M) were prepared by emulsion solvent evaporation method. A laser particle size distribution analyzer was used to investigate the size, distribution, specific surface area of microspheres. Paclitaxel content was determined by high performance liquid chromatography (HPLC). Then encapsulation efficiency of paclitaxel was calculated and in vitro release characteristics were studied. Secondly, PTX/M gel was prepared by cold dissolution method. The phase transition temperature, elastic modulus, dissolution curve, correlation between dissolution and release were measured. Finally, U87 MG and 4T1 subcutaneous tumor models were established respectively to study the efficacy of PTX/M gel in suppressing tumor growth and delaying tumor recurrence after surgery. RESULTS The median diameter of the selected PTX/M was (32.24±1.09) μm, the specific surface area was (206.61±10.23) m2/kg, the encapsulation efficiency was 85.29%±1.34%, and the cumulative release percentage of paclitaxel from PTX/M was 33.56%±3.33% in one month. Phase transition temperature of PTX/M gel was 33 °C. The elastic modulus of PTX/M gel at 25 °C and 37 °C were 4.2×103 Pa and 18×103 Pa, respectively. The gel could stay in the body for up to 48 hours. It could be seen from the results of animal experiments that were compared with the saline group and the Taxol group, and the tumor-bearing mice of the PTX/M gel group had the slowest tumor growth (P<0.05). Similarly, in the tumor recurrence experiments, the mice of PTX/M gel group had the latest tumor recurrence after surgery. CONCLUSION As a local sustained-release preparation, PTX/M gel can effectively suppress tumor growth and delay postoperative recurrence of tumors. It has potential advantages in tumor treatment.
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Affiliation(s)
- Y Zhan
- Department of Pharmaceutics, Peking University School of Pharmaceutical Sciences & Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery System, Beijing 100191, China
| | - Y T DU
- Department of Pharmaceutics, Peking University School of Pharmaceutical Sciences & Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery System, Beijing 100191, China
| | - Z Z Yang
- Department of Pharmaceutics, Peking University School of Pharmaceutical Sciences & Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery System, Beijing 100191, China
| | - C L Zhang
- Department of Nuclear Medicine, Peking University First Hospital, Beijing 100034, China
| | - X R Qi
- Department of Pharmaceutics, Peking University School of Pharmaceutical Sciences & Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery System, Beijing 100191, China
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Chen YL, Wang L, Yan GL, Yang ZZ, Huang ZP, Zhang YS, Zhao Z, Wan CC, Bao Y, Xiang H, Yin H, Chen LF, Xiong YY, Meng L, Li WM. [Efficacy and safety of domestic dasatinib as second-line treatment for chronic myeloid leukemia patients in the chronic phase]. Zhonghua Xue Ye Xue Za Zhi 2019; 40:98-104. [PMID: 30831623 PMCID: PMC7342660 DOI: 10.3760/cma.j.issn.0253-2727.2019.02.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
目的 探讨国产酪氨酸激酶抑制剂(TKI)达沙替尼(商品名:依尼舒)二线治疗慢性髓性白血病慢性期(CML-CP)患者的疗效及安全性。 方法 回顾性分析2016年3月至2018年7月湖北省CML协作组成员医院收治的二线服用国产达沙替尼的CML-CP患者的病例资料,统计患者治疗3、6和12个月时最佳反应率、累积完全细胞遗传学反应(CCyR)率、累积主要分子学反应(MMR)率、无进展生存(PFS)、无事件生存(EFS)情况及不良反应情况。 结果 共纳入83例CML-CP患者,中位随访时间为23(4~45)个月,达沙替尼治疗3、6、12个月最佳反应率分别为77.5%(54/71)、72.6%(61/75)、60.7%(51/69)。至随访截止,累积CCyR率、MMR率分别为65.5%(55/80)、57.1%(48/73),达CCyR和MMR的中位时间均为3个月。随访时间内,PFS率为94.0%(79/83),EFS率为77.4%(65/83)。国产达沙替尼最常见非血液学不良反应为水肿(32.5%),其次为皮疹瘙痒(18.1%)、乏力(13.3%),血液学不良反应主要有血小板减少(31.3%)、白细胞减少(19.3%)和贫血(6.0%)。 结论 国产达沙替尼二线治疗CML-CP患者具有较好的疗效及安全性,可作为CML-CP患者的治疗选择。
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Affiliation(s)
- Y L Chen
- Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - L Wang
- The First People's Hospital of Jingmen, Jingmen 448000, China
| | - G L Yan
- Xiangyang Central Hospital, Xiangyang 441021, China
| | - Z Z Yang
- Suizhou Central Hospital, Suizhou 441300, China
| | - Z P Huang
- Jingzhou Central Hospital, Jingzhou 434020, China
| | - Y S Zhang
- The First People's Hospital of Jingzhou, Jingzhou 434000, China
| | - Z Zhao
- Min Da Hospital Affiliated to Hubei Institute for Nationalities, Enshi 445000, China
| | - C C Wan
- Shiyan Taihe Hospital, Shiyan 442000, China
| | - Y Bao
- The First People's Hospital of Xiangyang, Xiangyang 441000, China
| | - H Xiang
- Central Hospital of Enshi Autonomous Prefecture, Enshi 445000, China
| | - H Yin
- Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - L F Chen
- Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Y Y Xiong
- Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - L Meng
- Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - W M Li
- Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
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Yang ZZ, Yu YT, Lin HR, Liao DC, Cui XH, Wang HB. Lonicera japonica extends lifespan and healthspan in Caenorhabditis elegans. Free Radic Biol Med 2018; 129:310-322. [PMID: 30266681 DOI: 10.1016/j.freeradbiomed.2018.09.035] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Revised: 09/07/2018] [Accepted: 09/21/2018] [Indexed: 12/31/2022]
Abstract
Lonicera japonica (LJ) is widely used as the local medicine to improve body and prevent ills in China, but mechanisms of its healthy beneficial effects remain largely unclear. Here, we evaluated the anti-aging and healthspan promoting activities of 75% ethanol extract of LJ (LJ-E) in the animal model Caenorhabditis elegans. Our results showed that LJ-E (500 μg/mL) treatment enhanced the mean lifespan of worms by over 21.87% and significantly improved age-associated physiological functions in C. elegans. The 500 μg/mL concentration of LJ-E enhanced the survival rates under oxidative and thermal stresses, and decreased reactive oxygen species (ROS) levels and fat accumulation in the worms. Gene-specific mutant studies showed that LJ-E-mediated lifespan extension was dependent on mev-1, daf-2, daf-16, and hsf-1, but not eat-2 genes. LJ-E could upregulate stress-inducible genes, viz., hsp-16.2, sod-3 and mtl-1. Moreover, we found that the D1086.10 protein interacted with superoxide dismutase (SOD)-3 by functional protein association networks analysis according to RNA-sequencing results. It was confirmed that D1086.10 was needed to promote longevity, and positively regulated expression of sod-3 by using D1086.10 mutants. Furthermore, LJ-E significantly delayed amyloid β-protein induced paralysis in CL4176 strain. Given the important role of autophagy in aging and protein homeostasis, we observed that LJ-E could remarkably increase the mRNA expression of autophagy gene bec-1 in CL4176 strain, and decrease expression of autophagy substrate p62 protein by more than 40.0% in BC12921 strain. Finally, we found that combination composed of three major compounds (54 μg/mL chlorogenic acid, 15 μg/mL 1,5-dicaffeoylquinic acid and 7.5 μg/mL 1,3-dicaffeoylquinic acid) of 500 μg/mL LJ-E could significantly delay paralysis in CL4176 worms caused by Aβ toxicity, comparable to that of LJ-E. Overall, our study may have important implications in using Lonicera japonica to promote healthy aging and have a potency to design therapeutics for age-related diseases.
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Affiliation(s)
- Zhen-Zhou Yang
- Research Center for Translational Medicine, Shanghai East Hospital, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Ying-Ting Yu
- Research Center for Translational Medicine, Shanghai East Hospital, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Hong-Ru Lin
- Research Center for Translational Medicine, Shanghai East Hospital, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - De-Chun Liao
- Research Center for Translational Medicine, Shanghai East Hospital, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Xiang-Huan Cui
- Research Center for Translational Medicine, Shanghai East Hospital, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Hong-Bing Wang
- Research Center for Translational Medicine, Shanghai East Hospital, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China.
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Jiang LQ, Liu GS, Yang ZZ, Shen XJ, Yang F, Zhang ZC, Gong LB. [A bibliometric analysis of literature on hand-transmitted vibration in China, 1990-2016]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2018; 35:932-935. [PMID: 29495159 DOI: 10.3760/cma.j.issn.1001-9391.2017.12.013] [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 investigate the features of literature on hand-transmitted vibration in China, 1990-2016. Methods: In September 2017, the studies on hand-transmitted vibration in China, which were published in Chinese or English during 1990-2016, with "China" and "Taiwan" as the places where author affiliations were located, were retrieved. A bibliometric analysis was performed to investigate the type of articles, publication time, the journals in which articles were published, author affiliations, author regions, and funding. Results: A total of 205 articles on hand-transmitted vibration were retrieved. There were 7.59 articles on average published annually from 1990 to 2016. In the 205 articles, 114 (55.61%) were published in the journals indexed in one or two core journal databases. In the 64 journals, 22 (34.38%) were indexed in one or two core journal databases. The first authors were from 22 provincial regions (provinces, autonomous regions, or centrally administered municipalities) in China, with 152 articles (74.15%) by the authors in the top five regions. There were a total of 876 authors, and the co-authorship degree was 4.27 (876/205). Most of the first authors (136 articles, 66.34%) were affiliated with universities or institutes for prevention and control of occupational diseases. Among the 205 articles, 103 (50.24%) were original articles or investigations, and 72 (35.12%) were funded. Conclusion: The studies on hand-transmitted vibration fluctuated and increased from 1990 to 2016, with a relatively concentrated distribution in terms of sources, regions, and institutions. Interregional and international academic exchange should be strengthened.
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Affiliation(s)
- L Q Jiang
- Department of Occupational Disease Control and Prevention of Xishan Coal and Electricity (Group) Co., Ltd, Taiyuan 030053, China
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Zhou J, Gong Z, Jia Q, Wu Y, Yang ZZ, Zhu B. Programmed death ligand 1 expression and CD8 + tumor-infiltrating lymphocyte density differences between paired primary and brain metastatic lesions in non-small cell lung cancer. Biochem Biophys Res Commun 2018. [PMID: 29526752 DOI: 10.1016/j.bbrc.2018.03.053] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [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: 12/31/2022]
Abstract
Immunotherapy targeting the programmed cell death-1/programmed death ligand 1(PD-L1) pathway has shown promising antitumor activity in brain metastases (BMs) of non-small cell lung cancer (NSCLC) patients with an acceptable safety profile; however, the response rates often differ between primary lesions and intracranial lesions. Studies are necessary to identify detailed characterizations of the response biomarkers. In this study, we aimed to compare the differences of PD-L1 expression and CD8+ tumor-infiltrating lymphocyte (TIL) density, two major response biomarkers of PD-1/PD-L1 blockade, between paired primary and brain metastatic lesions in advanced NSCLC. We observed that among primary lesions or BMs, only a small number of patients harbored common PD-L1 expression on both tumor cells and tumor-infiltrating immune cells. Additionally, we found that the numbers of CD8+ TILs were significantly fewer in BMs than in primary lung cancers. Low stromal CD8+ TIL numbers in BMs were associated with significantly shorter overall survival compared to high stromal CD8+ TIL counts. Notably, we demonstrated a discrepancy in PD-L1 expression and CD8+ TIL density between primary lung cancers and their corresponding BMs. Such heterogeneities are significantly associated with the time at which BMs occurred. Our study emphasizes the spatial and temporal heterogeneity of biomarkers for anti-PD-1/PD-L1 therapy, which should be concerned in clinical practice.
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Affiliation(s)
- Jie Zhou
- Institute of Cancer, Xinqiao Hospital, Third Military Medical University, Chongqing, 400037, China
| | - Zhihua Gong
- Institute of Cancer, Xinqiao Hospital, Third Military Medical University, Chongqing, 400037, China
| | - Qingzhu Jia
- Institute of Cancer, Xinqiao Hospital, Third Military Medical University, Chongqing, 400037, China
| | - Yan Wu
- Institute of Cancer Center, Research Institute of Surgery, Daping Hospital, Third Military Medical University, 400042, Chongqing, China
| | - Zhen-Zhou Yang
- Department of Oncology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, 400010, China.
| | - Bo Zhu
- Institute of Cancer, Xinqiao Hospital, Third Military Medical University, Chongqing, 400037, China.
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Zhang Z, Jin F, Lian X, Li M, Wang G, Lan B, He H, Liu GD, Wu Y, Sun G, Xu CX, Yang ZZ. Genistein promotes ionizing radiation-induced cell death by reducing cytoplasmic Bcl-xL levels in non-small cell lung cancer. Sci Rep 2018; 8:328. [PMID: 29321496 PMCID: PMC5762702 DOI: 10.1038/s41598-017-18755-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [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: 01/10/2017] [Accepted: 12/11/2017] [Indexed: 12/29/2022] Open
Abstract
Genistein (GEN) has been previously reported to enhance the radiosensitivity of cancer cells; however, the detailed mechanisms remain unclear. Here, we report that GEN treatment inhibits the cytoplasmic distribution of Bcl-xL and increases nuclear Bcl-xL in non-small cell lung cancer (NSCLC). Interestingly, our in vitro data show that ionizing radiation IR treatment significantly increases IR-induced DNA damage and apoptosis in a low cytoplasmic Bcl-xL NSCLC cell line compared to that of high cytoplasmic Bcl-xL cell lines. In addition, clinical data also show that the level of cytoplasmic Bcl-xL was negatively associated with radiosensitivity in NSCLC. Furthermore, we demonstrated that GEN treatment enhanced the radiosensitivity of NSCLC cells partially due to increases in Beclin-1-mediated autophagy by promoting the dissociation of Bcl-xL and Beclin-1. Taken together, these findings suggest that GEN can significantly enhance radiosensitivity by increasing apoptosis and autophagy due to inhibition of cytoplasmic Bcl-xL distribution and the interaction of Bcl-xL and Beclin-1 in NSCLC cells, respectively.
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Affiliation(s)
- Zhimin Zhang
- Cancer Center, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing, 400042, China
| | - Feng Jin
- Cancer Center, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing, 400042, China
| | - Xiaojuan Lian
- Department of tumor blood, Jiangjin central hospital of Chongqing, Chongqing, 400042, China
| | - Mengxia Li
- Cancer Center, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing, 400042, China
| | - Ge Wang
- Cancer Center, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing, 400042, China
| | - Baohua Lan
- Cancer Center, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing, 400042, China
| | - Hao He
- Cancer Center, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing, 400042, China
| | - Guo-Dong Liu
- Eighth Department, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing, 400042, China
| | - Yan Wu
- Cancer Center, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing, 400042, China
| | - Guiyin Sun
- Department of tumor blood, Jiangjin central hospital of Chongqing, Chongqing, 400042, China
| | - Cheng-Xiong Xu
- Cancer Center, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing, 400042, China.
| | - Zhen-Zhou Yang
- Cancer Center, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing, 400042, China.
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11
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Chen W, Lin HR, Wei CM, Luo XH, Sun ML, Yang ZZ, Chen XY, Wang HB. Echinacoside, a phenylethanoid glycoside from Cistanche deserticola, extends lifespan of Caenorhabditis elegans and protects from Aβ-induced toxicity. Biogerontology 2017; 19:47-65. [PMID: 29185166 DOI: 10.1007/s10522-017-9738-0] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Accepted: 11/23/2017] [Indexed: 10/18/2022]
Abstract
Cistanche deserticola has been found to exert protection against aging and age-related diseases, but mechanisms underlying its longevity effects remain largely unclear. Here, the multicellular model organism Caenorhabditis elegans was employed to identify lifespan extending and protective effects against β-amyloid (Aβ) induced toxicity by echinacoside (ECH), a phenylethanoid glycoside isolated from C. deserticola. Our results showed that ECH extends the mean lifespan of worms and increases their survival under oxidative stress. Levels of intracellular reactive oxygen species and fat accumulation were also significantly suppressed by ECH. Moreover, ECH-mediated lifespan extension was found to be dependent on mev-1, eat-2, daf-2, and daf-16, but not sir-2.1 or hsf-1 genes. Furthermore, ECH triggered DAF-16 nuclear localization and upregulated two of its downstream targets, sod-3 and hsp-16.2. In addition, ECH significantly improved the survival of CL4176 worms in response to proteotoxic stress induced by Aβ protein aggregation. Collectively, these findings suggested that reactive oxygen species scavenging, dietary restriction, and insulin/insulin-like growth factor signaling pathways could be partly involved in ECH-mediated lifespan extension. Thus, ECH may target multiple longevity mechanisms to extend lifespan and have a potency to prevent Alzheimer's disease progression.
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Affiliation(s)
- Wei Chen
- Research Center for Translational Medicine, Shanghai East Hospital, School of Life Sciences and Technology, Tongji University, Shanghai, 200092, China
| | - Hong-Ru Lin
- Research Center for Translational Medicine, Shanghai East Hospital, School of Life Sciences and Technology, Tongji University, Shanghai, 200092, China
| | - Cong-Min Wei
- Research Center for Translational Medicine, Shanghai East Hospital, School of Life Sciences and Technology, Tongji University, Shanghai, 200092, China
| | - Xiao-Hua Luo
- Research Center for Translational Medicine, Shanghai East Hospital, School of Life Sciences and Technology, Tongji University, Shanghai, 200092, China
| | - Meng-Lu Sun
- Research Center for Translational Medicine, Shanghai East Hospital, School of Life Sciences and Technology, Tongji University, Shanghai, 200092, China
| | - Zhen-Zhou Yang
- Research Center for Translational Medicine, Shanghai East Hospital, School of Life Sciences and Technology, Tongji University, Shanghai, 200092, China
| | - Xin-Yan Chen
- Research Center for Translational Medicine, Shanghai East Hospital, School of Life Sciences and Technology, Tongji University, Shanghai, 200092, China
| | - Hong-Bing Wang
- Research Center for Translational Medicine, Shanghai East Hospital, School of Life Sciences and Technology, Tongji University, Shanghai, 200092, China.
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12
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Wang SN, Luo S, Liu C, Piao Z, Gou W, Wang Y, Guan W, Li Q, Zou H, Yang ZZ, Wang D, Wang Y, Xu M, Jin H, Xu CX. miR-491 Inhibits Osteosarcoma Lung Metastasis and Chemoresistance by Targeting αB-crystallin. Mol Ther 2017. [PMID: 28648665 DOI: 10.1016/j.ymthe.2017.05.018] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Dysregulated microRNAs (miRNAs) play an important role in osteosarcoma (OS) progression. In the present study, we investigate the clinical significance of serum miR-491 level and the potential role of miR-491 in OS lung metastasis and chemoresistance. Clinical data show that the level of miR-491 was decreased in serum from OS patients compared with healthy control subjects, and that a decreased serum miR-491 level is correlated with increased metastasis, poor chemoresponse, and lower survival rate in OS patients. In vitro and in vivo experiments show that overexpression of miR-491 suppresses OS cell lung metastasis, whereas it enhances cisplatin (CDDP)-induced tumor growth inhibition and apoptosis. In contrast, inhibition of miR-491 stimulates OS cell lung metastasis and suppresses CDDP-induced tumor growth inhibition and apoptosis. Furthermore, we demonstrate that miR-491 exerts its role by directly targeting αB-crystallin (CRYAB) in OS. Our findings suggest that serum level of miR-491 has potential as a biomarker for predicting OS progression and prognosis of OS patients. Additionally, restoration of miR-491 may be a novel strategy for inhibiting OS lung metastasis and overcoming OS cell resistance to chemotherapy.
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Affiliation(s)
- Shu-Nan Wang
- Department of Radiology, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing 400042, China
| | - Song Luo
- Department of Orthopaedics, The General Hospital of Chinese People's Liberation Army, Beijing 100853, China
| | - Chang Liu
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Jilin University, Changchun 130021, China
| | - Zhenghao Piao
- Department of Basic Medical Science, School of Medicine, Hangzhou Normal University, Hangzhou 310036, China
| | - Wenlong Gou
- Department of Orthopaedics, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing 400042, China
| | - Yun Wang
- Department of Pathology, The General Hospital of Chinese People's Liberation Army, Beijing 100853, China
| | - Wei Guan
- Cancer Center, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing 400042, China
| | - Qing Li
- Cancer Center, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing 400042, China
| | - Hua Zou
- Cancer Center, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing 400042, China
| | - Zhen-Zhou Yang
- Cancer Center, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing 400042, China
| | - Dong Wang
- Cancer Center, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing 400042, China
| | - Yan Wang
- Department of Orthopaedics, The General Hospital of Chinese People's Liberation Army, Beijing 100853, China
| | - Meng Xu
- Department of Orthopaedics, The General Hospital of Chinese People's Liberation Army, Beijing 100853, China
| | - Hua Jin
- Department of Thoracic Surgery, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing 400042, China; Department of Pharmaceutical Science, College of Pharmacy, University of South Florida, Tampa, FL 33612, USA.
| | - Cheng-Xiong Xu
- Cancer Center, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing 400042, China.
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13
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Jin H, Luo S, Wang Y, Liu C, Piao Z, Xu M, Guan W, Li Q, Zou H, Tan QY, Yang ZZ, Wang Y, Wang D, Xu CX. miR-135b Stimulates Osteosarcoma Recurrence and Lung Metastasis via Notch and Wnt/β-Catenin Signaling. Mol Ther Nucleic Acids 2017; 8:111-122. [PMID: 28918013 PMCID: PMC5493819 DOI: 10.1016/j.omtn.2017.06.008] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 06/11/2017] [Accepted: 06/12/2017] [Indexed: 01/06/2023]
Abstract
Cancer stem cells (CSCs) play an important role in osteosarcoma (OS) metastasis and recurrence, and both Wnt/β-catenin and Notch signaling are essential for the development of the biological traits of CSCs. However, the mechanism that underlies the simultaneous hyperactivation of both Wnt/β-catenin and Notch signaling in OS remains unclear. Here, we report that expression of miR-135b correlates with the overall and recurrence-free survival of OS patients, and that miR-135b has an activating effect on both Wnt/β-catenin and Notch signaling. The overexpression of miR-135b simultaneously targets multiple negative regulators of the Wnt/β-catenin and Notch signaling pathways, including glycogen synthase kinase-3 beta (GSK3β), casein kinase 1a (CK1α), and ten-eleven translocation 3 (TET3). Therefore, upregulated miR-135b promotes CSC traits, lung metastasis, and tumor recurrence in OS. Notably, antagonizing miR-135b potently inhibits OS lung metastasis, cancer cell stemness, CSC-induced tumor formation, and recurrence in xenograft animal models. These findings suggest that miR-135b mediates the constitutive activation of Wnt/β-catenin and Notch signaling, and that the inhibition of miR-135b is a novel strategy to inhibit tumor metastasis and prevent CSC-induced recurrence in OS.
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Affiliation(s)
- Hua Jin
- Department of Thoracic Surgery, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing 400042, China
| | - Song Luo
- Department of Orthopaedics, The General Hospital of Chinese People's Liberation Army, Beijing 100853, China
| | - Yun Wang
- Department of Pathology, The General Hospital of Chinese People's Liberation Army, Beijing 100853, China
| | - Chang Liu
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Jilin University, Changchun 130021, China
| | - Zhenghao Piao
- Department of Basic Medical Science, School of Medicine, Hangzhou Normal University, Hangzhou 310036, China
| | - Meng Xu
- Department of Orthopaedics, The General Hospital of Chinese People's Liberation Army, Beijing 100853, China
| | - Wei Guan
- Cancer Center, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing 400042, China
| | - Qing Li
- Cancer Center, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing 400042, China
| | - Hua Zou
- Cancer Center, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing 400042, China
| | - Qun-You Tan
- Cancer Center, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing 400042, China
| | - Zhen-Zhou Yang
- Cancer Center, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing 400042, China
| | - Yan Wang
- Department of Orthopaedics, The General Hospital of Chinese People's Liberation Army, Beijing 100853, China
| | - Dong Wang
- Cancer Center, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing 400042, China
| | - Cheng-Xiong Xu
- Cancer Center, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing 400042, China.
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14
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Li MX, He H, Ruan ZH, Zhu YX, Li RQ, He X, Lan BH, Zhang ZM, Liu GD, Xiao HL, Wu Y, Zhu B, Wang G, Yang ZZ. Central nervous system progression in advanced non-small cell lung cancer patients with EGFR mutations in response to first-line treatment with two EGFR-TKIs, gefitinib and erlotinib: a comparative study. BMC Cancer 2017; 17:245. [PMID: 28376735 PMCID: PMC5379522 DOI: 10.1186/s12885-017-3165-0] [Citation(s) in RCA: 22] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Accepted: 03/02/2017] [Indexed: 11/25/2022] Open
Abstract
Background Central nervous system (CNS) brain metastasis of advanced non-small cell lung cancer (NSCLC) patients confers a worse quality of life and prognosis. The efficacy comparison of two first-generation epidermal growth factor receptor (EGFR) inhibitors erlotinib or gefitinib as first-line treatment for CNS metastasis NSCLC patients with EGFR-sensitizing mutations is yet to be elucidated. Methods A retrospective analysis was done on cerebral metastasis rate after erlotinib or gefitinib as first-line treatment for advanced NSCLC patients with EGFR-sensitizing mutations. Time to neurological progression (nTTP) and median progression-free survival (mPFS) were calculated. Results The study involved 279 patients (erlotinib group: 108, gefitinib group: 171). After a median follow-up of 22 months, 27 patients (25%) in the erlotinib group and 60 patients (35.1%) in the gefitinib group showed CNS progression. The HR of CNS progression for erlotinib versus gefitinib was 0.695 [95% confidence interval (CI), 0.406–1.190], suggesting a risk reduction of 30.5% although not achieving statistical significance. The 6-, 12- and 18-month cumulative CNS progression rates were 0.9, 3.7 and 12% for erlotinib compared with corresponding rates of 5.8, 9.4 and 17% for gefitinib (P = 0.181). However, for those patients with preexisting brain metastases prior to EGFR-TKI treatment, erlotinib as first line treatment significantly extended the median nTTP in comparison to gefitinib (30 months vs 15.8 months, p = 0.024). Conclusions Our data show that nTTP can be effectively extended in preexisting brain metastases patients with EGFR-sensitizing mutations initially treated with erlotinib compared with gefitinib. If confirmed, our results indicate that erlotinib may play an important role in controlling CNS progression from EGFR mutation-positive NSCLC. Electronic supplementary material The online version of this article (doi:10.1186/s12885-017-3165-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Meng-Xia Li
- Cancer Center, Research Institute of Surgery, Daping Hospital, Third Military Medical University, 10 Changjiang Zhilu, Daping Yuzhong District, Chongqing, 400042, People's Republic of China
| | - Hao He
- Cancer Center, Research Institute of Surgery, Daping Hospital, Third Military Medical University, 10 Changjiang Zhilu, Daping Yuzhong District, Chongqing, 400042, People's Republic of China
| | - Zhi-Hua Ruan
- Department of Oncology, Southwest Hospital, Third Military Medical University, Chongqing, 400037, People's Republic of China
| | - Yu-Xi Zhu
- Department of Oncology, First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Rong-Qing Li
- Department of Radiation Oncology, First Affiliated Hospital of Kunming Medical University, Kunming, 650032, Yunnan, People's Republic of China
| | - Xiao He
- Cancer Center, Research Institute of Surgery, Daping Hospital, Third Military Medical University, 10 Changjiang Zhilu, Daping Yuzhong District, Chongqing, 400042, People's Republic of China
| | - Bao-Hua Lan
- Cancer Center, Research Institute of Surgery, Daping Hospital, Third Military Medical University, 10 Changjiang Zhilu, Daping Yuzhong District, Chongqing, 400042, People's Republic of China
| | - Zhi-Min Zhang
- Cancer Center, Research Institute of Surgery, Daping Hospital, Third Military Medical University, 10 Changjiang Zhilu, Daping Yuzhong District, Chongqing, 400042, People's Republic of China
| | - Guo-Dong Liu
- Eighth Department, Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing, 400042, People's Republic of China
| | - Hua-Liang Xiao
- Department of Pathology, Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing, 400042, People's Republic of China
| | - Yan Wu
- Cancer Center, Research Institute of Surgery, Daping Hospital, Third Military Medical University, 10 Changjiang Zhilu, Daping Yuzhong District, Chongqing, 400042, People's Republic of China
| | - Bo Zhu
- Institute of Cancer, Xinqiao Hospital, Third Military Medical University, Chongqing, 400037, People's Republic of China
| | - Ge Wang
- Cancer Center, Research Institute of Surgery, Daping Hospital, Third Military Medical University, 10 Changjiang Zhilu, Daping Yuzhong District, Chongqing, 400042, People's Republic of China
| | - Zhen-Zhou Yang
- Cancer Center, Research Institute of Surgery, Daping Hospital, Third Military Medical University, 10 Changjiang Zhilu, Daping Yuzhong District, Chongqing, 400042, People's Republic of China.
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15
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Su J, Yang ZZ, Lu XM, Zhang JT, Gu L, Lu CJ, Li QC, Liu JM, Zhu JS. Magnetism-Driven Ferroelectricity in Double Perovskite Y₂NiMnO₆. ACS Appl Mater Interfaces 2015; 7:13260-13265. [PMID: 26017622 DOI: 10.1021/acsami.5b00911] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We report the discovery of multiferroic behavior in double perovskite Y2NiMnO6. X-ray diffraction shows that the material has a centrosymmetric crystal structure of space group P2(1)/n with Ni(2+)/Mn(4+) ordering. This result is further confirmed by aberration-corrected scanning transmission electron microscopy combined with atomic resolution electron energy loss spectroscopy. The appearance of ferroelectric polarization coincides with the magnetic phase transition (∼67 K), which indicates that the ferroelectricity is driven by magnetism, and this is further confirmed by its strong magnetoelectric (ME) effect. We proposed the origin of the ferroelectricity is associated with the combination of Ni(2+)/Mn(4+) charge ordering and the ↑↑↓↓ spin ordering. When compared with other known magnetic multiferroics, Y2NiMnO6 displays several attractive multiferroic properties, including high polarization (∼145 μC/m(2)), a high multiferroic transition temperature (∼67 K), and strong ME coupling (∼21%).
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Affiliation(s)
- J Su
- †College of Physics Science, Key Laboratory of Photonics Materials and Technology in Universities of Shandong, Qingdao University, Ningxia Road, Qingdao Shinan District No. 22, Qingdao 266071, China
- §National Laboratory of Solid State Microstructures, Physics School, Nanjing University, Nanjing 210093, China
| | - Z Z Yang
- ‡Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - X M Lu
- §National Laboratory of Solid State Microstructures, Physics School, Nanjing University, Nanjing 210093, China
| | - J T Zhang
- §National Laboratory of Solid State Microstructures, Physics School, Nanjing University, Nanjing 210093, China
| | - L Gu
- ‡Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - C J Lu
- †College of Physics Science, Key Laboratory of Photonics Materials and Technology in Universities of Shandong, Qingdao University, Ningxia Road, Qingdao Shinan District No. 22, Qingdao 266071, China
| | - Q C Li
- †College of Physics Science, Key Laboratory of Photonics Materials and Technology in Universities of Shandong, Qingdao University, Ningxia Road, Qingdao Shinan District No. 22, Qingdao 266071, China
| | - J-M Liu
- §National Laboratory of Solid State Microstructures, Physics School, Nanjing University, Nanjing 210093, China
| | - J S Zhu
- §National Laboratory of Solid State Microstructures, Physics School, Nanjing University, Nanjing 210093, China
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16
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Hu N, Wang G, Wu YH, Chen SF, Liu GD, Chen C, Wang D, He ZS, Yang XQ, He Y, Xiao HL, Huang DD, Xiong KL, Wu Y, Huang M, Yang ZZ. LDA-SVM-based EGFR mutation model for NSCLC brain metastases: an observational study. Medicine (Baltimore) 2015; 94:e375. [PMID: 25654374 PMCID: PMC4602717 DOI: 10.1097/md.0000000000000375] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Epidermal growth factor receptor (EGFR) activating mutations are a predictor of tyrosine kinase inhibitor effectiveness in the treatment of non-small-cell lung cancer (NSCLC). The objective of this study is to build a model for predicting the EGFR mutation status of brain metastasis in patients with NSCLC. Observation and model set-up. This study was conducted between January 2003 and December 2011 in 6 medical centers in Southwest China. The study included 31 NSCLC patients with brain metastases. Eligibility requirements were histological proof of NSCLC, as well as sufficient quantity of paraffin-embedded lung and brain metastases specimens for EGFR mutation detection. The linear discriminant analysis (LDA) method was used for analyzing the dimensional reduction of clinical features, and a support vector machine (SVM) algorithm was employed to generate an EGFR mutation model for NSCLC brain metastases. Training-testing-validation (3 : 1 : 1) processes were applied to find the best fit in 12 patients (validation test set) with NSCLC and brain metastases treated with a tyrosine kinase inhibitor and whole-brain radiotherapy. Primary and secondary outcome measures: EGFR mutation analysis in patients with NSCLC and brain metastases and the development of a LDA-SVM-based EGFR mutation model for NSCLC brain metastases patients. EGFR mutation discordance between the primary lung tumor and brain metastases was found in 5 patients. Using LDA, 13 clinical features were transformed into 9 characteristics, and 3 were selected as primary vectors. The EGFR mutation model constructed with SVM algorithms had an accuracy, sensitivity, and specificity for determining the mutation status of brain metastases of 0.879, 0.886, and 0.875, respectively. Furthermore, the replicability of our model was confirmed by testing 100 random combinations of input values. The LDA-SVM-based model developed in this study could predict the EGFR status of brain metastases in this small cohort of patients with NSCLC. Further studies with larger cohorts should be carried out to validate our findings in the clinical setting.
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Affiliation(s)
- Nan Hu
- From the Cancer Center, Research Institute of Surgery, Daping Hospital, Third Military Medical University (NH, GW, CC, DW, X-QY, YW, Z-ZY); College of Computer Science, Chongqing University, Chongqing, P.R. China (Y-HW, Z-SH); Department of Radiation Oncology, University of Maryland School of Medicine, Baltimore, Maryland, USA (S-FC); Eighth Department (G-DL); Department of Respiration (YH); Department of Pathology, Daping Hospital, (H-LX); Department of Nuclear Medicine, Southwest Hospital, (D-DH); Department of Radiology, Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing, P.R. China (K-LX); and Department of Minimally Invasive Interventional Radiology, Yunnan Tumor Hospital, Third Hospital Affiliated of Kunming Medical University, Kunming, P.R. China (MH)
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17
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Shan JL, He HT, Li MX, Zhu JW, Cheng Y, Hu N, Wang G, Wang D, Yang XQ, He Y, Xiao HL, Tong WD, Yang ZZ. APE1 promotes antioxidant capacity by regulating Nrf-2 function through a redox-dependent mechanism. Free Radic Biol Med 2015; 78:11-22. [PMID: 25452143 DOI: 10.1016/j.freeradbiomed.2014.10.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2014] [Revised: 09/30/2014] [Accepted: 10/07/2014] [Indexed: 10/24/2022]
Abstract
APE1 is a multifunctional protein that has recently been implicated in protecting cells from oxidative stress. In the current study, we confirmed that APE1׳s effect on cellular antioxidant capacity is related to its redox activity through the use of an APE1 functional mutant, and we investigated the mechanism through which this multifunctional protein affects the function of the transcription factor Nrf-2 in regulating oxidative stress-induced genes. Using a pair of mutants for both the redox activity and the acetylation-regulated activity of APE1, in vitro assays showed that the redox activity of APE1 is crucial for its nuclear association with Nrf-2 and subsequent activation of Nrf-2׳s transcription of several downstream genes during oxidative challenge. Important oxidative stress genes are affected by APE1 redox activity, including Hmox1, Gstm1, and Txnrd1. In addition, utilizing human non-small-cell lung cancer sample tissue as well as a nude mouse xenograft model, we determined that APE1 expression levels are inversely correlated to oxidative stress in vivo. These findings indicated that interference with these crucial functions of APE1 shows promise in preventing resistance to certain radiotherapies and that further research is necessary to understand APE1׳s complex roles in regulating both the basal redox status and the oxidative stress state of the cellular environment.
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Affiliation(s)
- Jin-Lu Shan
- Cancer Center, Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing 400042, People׳s Republic of China
| | - Hai-Tao He
- Department of Oral and Maxillofacial Surgery, Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing 400042, People׳s Republic of China
| | - Meng-Xia Li
- Cancer Center, Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing 400042, People׳s Republic of China
| | - Jian-Wu Zhu
- Cancer Center, Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing 400042, People׳s Republic of China
| | - Yi Cheng
- Cancer Center, Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing 400042, People׳s Republic of China
| | - Nan Hu
- Cancer Center, Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing 400042, People׳s Republic of China
| | - Ge Wang
- Cancer Center, Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing 400042, People׳s Republic of China
| | - Dong Wang
- Cancer Center, Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing 400042, People׳s Republic of China
| | - Xue-Qin Yang
- Cancer Center, Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing 400042, People׳s Republic of China
| | - Yong He
- Department of Respiration, Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing 400042, People׳s Republic of China
| | - Hua-Liang Xiao
- Department of Pathology, Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing 400042, People׳s Republic of China
| | - Wei-Dong Tong
- Department of General surgery, Research Institute of Surgery, Southwest Hospital, Third Military Medical University, Chongqing 400042, People׳s Republic of China
| | - Zhen-Zhou Yang
- Cancer Center, Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing 400042, People׳s Republic of China.
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Zhou RJ, Yang XQ, Wang D, Zhou Q, Xia L, Li MX, Zeng LL, Wang G, Yang ZZ. Anti-tumor effects of all-trans retinoic acid are enhanced by genistein. Cell Biochem Biophys 2012; 62:177-84. [PMID: 21898109 DOI: 10.1007/s12013-011-9279-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The effects of all-trans retinoic acid (ATRA) on cancer are complex. ATRA has anti-cancer effects as it promotes cancer cell differentiation. However, ATRA also up-regulates expression of vascular endothelial growth factor (VEGF) in cancer cells, which leads to angiogenesis and can, thus, facilitate cancer growth. Genistein, a crucial non-nutrient component in soybean, exhibits anti-cancer effects by inhibiting protein tyrosine kinase that is involved in up-regulation of VEGF. We hypothesized that genistein, applied simultaneously with ATRA, would counter its undesired angiogenic effects and, thus, enhance the anti-cancer effects of ATRA. The purpose of this study was to document potential synergistic effects of genistein and ATRA in A549 lung adenocarcinoma cells. We further explored the role of genistein on countering the ATRA-induced VEGF expression. We demonstrate that genistein enhances the ATRA-induced growth inhibition of A549 cells by promoting apoptosis. Further, the combined use of ATRA and genistein leads to cancer cell arrest in G0/G1 and G2/M cell cycle phases. Finally, expression of VEGF (both mRNA and protein) was diminished in A549 cells exposed to both ATRA and genistein. In conclusion, our results demonstrate that genistein effectively enhances anti-cancer effects of ATRA, particularly, by countering the ATRA-induced up-regulation of VEGF. Our study provides an experimental basis for combined use of ATRA and genistein in the treatment of lung cancer.
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Affiliation(s)
- Ren-Jie Zhou
- Department of Emergency, Xinqiao Hospital, Chongqing, China
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Li MX, Shan JL, Wang D, He Y, Zhou Q, Xia L, Zeng LL, Li ZP, Wang G, Yang ZZ. Human apurinic/apyrimidinic endonuclease 1 translocalizes to mitochondria after photodynamic therapy and protects cells from apoptosis. Cancer Sci 2012; 103:882-8. [PMID: 22329793 DOI: 10.1111/j.1349-7006.2012.02239.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2011] [Revised: 01/27/2012] [Accepted: 01/29/2012] [Indexed: 01/10/2023] Open
Abstract
Photodynamic therapy (PDT) is an effective therapeutic regime for lung cancer. Mitochondrial functional failure is considered to be one of the most important factors causing cell death after PDT. However, the detailed mechanisms that are involved are still unclear. We previously reported that apurinic/apyrimidinic endonuclease (APE1) plays a critical role in regulating sensitivity to PDT in the lung cancer A549 cell line. An important mitochondrial regulatory role for APE1 has recently been reported, so therefore we explored the role of APE1 in cell survival after PDT-induced oxidative stress through regulation of mitochondrial function. We first observed that photoirradiation induced the mitochondrial translocation of APE1. The ability of APE1 to regulate mitochondrial membrane potential and reactive oxygen species (ROS) production after photoirradiation was tested in APE1 knockdown A549 cells. APE1-deficient A549 cells were characterized as having a lower mitochondrial membrane potential and higher ROS production, which led to increased apoptosis through the mitochondrial pathway after PDT. Additionally, unexpected activity of APE1 was observed in mitochondria: the control of mitochondrial transcriptional activity by redox regulation of mitochondrial transcription factor A (TFAM). Furthermore, two dominant-negative mutants of APE1 were overexpressed to enhance their individual activities in mitochondria. The results suggest that both these APE1 activities play a role in the regulation of mitochondrial function but through different mechanisms. The present study not only provides possible mechanisms for APE1 in regulating survival after photoirradiation but also uncovers a new activity of APE1 in mitochondria.
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Affiliation(s)
- Meng-Xia Li
- Cancer Center, Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing, China
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Xie JY, Li MX, Xiang DB, Mou JH, Qing Y, Zeng LL, Yang ZZ, Guan W, Wang D. Elevated Expression of APE1/Ref-1 and its Regulation on IL-6 and IL-8 in Bone Marrow Stromal Cells of Multiple Myeloma. Clinical Lymphoma Myeloma and Leukemia 2010; 10:385-93. [DOI: 10.3816/clml.2010.n.072] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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21
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Qing Y, Yang XQ, Zhong ZY, Lei X, Xie JY, Li MX, Xiang DB, Li ZP, Yang ZZ, Wang G, Wang D. Microarray analysis of DNA damage repair gene expression profiles in cervical cancer cells radioresistant to 252Cf neutron and X-rays. BMC Cancer 2010; 10:71. [PMID: 20184742 PMCID: PMC2838822 DOI: 10.1186/1471-2407-10-71] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2009] [Accepted: 02/25/2010] [Indexed: 12/02/2022] Open
Abstract
Background The aim of the study was to obtain stable radioresistant sub-lines from the human cervical cancer cell line HeLa by prolonged exposure to 252Cf neutron and X-rays. Radioresistance mechanisms were investigated in the resulting cells using microarray analysis of DNA damage repair genes. Methods HeLa cells were treated with fractionated 252Cf neutron and X-rays, with a cumulative dose of 75 Gy each, over 8 months, yielding the sub-lines HeLaNR and HeLaXR. Radioresistant characteristics were detected by clone formation assay, ultrastructural observations, cell doubling time, cell cycle distribution, and apoptosis assay. Gene expression patterns of the radioresistant sub-lines were studied through microarray analysis and verified by Western blotting and real-time PCR. Results The radioresistant sub-lines HeLaNR and HeLaXR were more radioresisitant to 252Cf neutron and X-rays than parental HeLa cells by detecting their radioresistant characteristics, respectively. Compared to HeLa cells, the expression of 24 genes was significantly altered by at least 2-fold in HeLaNR cells. Of these, 19 genes were up-regulated and 5 down-regulated. In HeLaXR cells, 41 genes were significantly altered by at least 2-fold; 38 genes were up-regulated and 3 down-regulated. Conclusions Chronic exposure of cells to ionizing radiation induces adaptive responses that enhance tolerance of ionizing radiation and allow investigations of cellular radioresistance mechanisms. The insights gained into the molecular mechanisms activated by these "radioresistance" genes will lead to new therapeutic targets for cervical cancer.
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Affiliation(s)
- Yi Qing
- Cancer Center, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing, PR China
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22
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Yang ZZ, Li YF, Hou YX, Liang HY, Qin ZF, Fu S. Vertical distribution of polybrominated diphenyl ethers (PBDEs) in soil cores taken from a typical electronic waste polluted area in South China. Bull Environ Contam Toxicol 2010; 84:260-263. [PMID: 20091149 DOI: 10.1007/s00128-009-9924-0] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2009] [Accepted: 12/08/2009] [Indexed: 05/28/2023]
Abstract
37 PBDE congeners were analyzed at six different depths in two soil cores taken from a typical electronic waste polluted area in South China. The PBDEs were congregated in the surface layer (0-5 cm) of soil cores and were 29 times in MK and 18 times in NW higher than the second lower layers (5-10 cm). As a whole, the concentrations of PBDEs were decreased with the soil depth increased in two cores. Lower brominated PBDE had higher penetrability than the deca-BDE in soil. The deca-BDE could be detected in deeper soil layers (15-20 cm in MK and 20-30 cm in NW) and the percentage of deca-BDE decreased with the increase of depth.
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Affiliation(s)
- Z Z Yang
- Department of Public Health, Xinxiang Medical College, 453003 Xinxiang, Henan, China.
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Li YF, Yang ZZ, Wang CH, Yang ZJ, Qin ZF, Fu S. Tissue distribution of polybrominated diphenyl ethers (PBDEs) in captive domestic pigs, Sus scrofa, from a village near an electronic waste recycling site in South China. Bull Environ Contam Toxicol 2010; 84:208-211. [PMID: 20091151 DOI: 10.1007/s00128-009-9922-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2009] [Accepted: 12/08/2009] [Indexed: 05/28/2023]
Abstract
The dominant part of PBDEs residue in pig tissues was BDE-47 accounted for 48.2% approximately 66.9%, followed by BDE-99 from 15.9% to 24.2%. When the data were on lipid weight basis, the summation operatorPBDEs concentrations in tissues of individual pig showed the same order of liver > muscle, intestine > fat. Principal component analysis and PBDE congener mean concentration ratios of muscle versus liver (M/L), fat versus liver (F/L) and intestine versus liver (I/L) showed the higher accumulation ability of PBDEs in liver than in other tissues. And the PBDE mean concentration ratios of M/L, F/L and I/L had the trend of decrease with increasing bromination degree of PBDE congeners.
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Affiliation(s)
- Y F Li
- College of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, 453003 Xinxiang, Henan, China
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Yang ZZ, Li MX, Zhang YS, Xiang DB, Dai N, Zeng LL, Li ZP, Wang G, Wang D. Knock down of the dual functional protein apurinicâ/apyrimidinic endonuclease 1 enhances the killing effect of hematoporphrphyrin derivative-mediated photodynamic therapy on non-small cell lung cancer cells in vitro and in a xenograft model. Cancer Sci 2010; 101:180-7. [DOI: 10.1111/j.1349-7006.2009.01366.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
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Li K, Fu S, Yang ZZ, Xu XB. Polybrominated diphenyl ethers in the soil of typical industrial city. Bull Environ Contam Toxicol 2009; 83:926-930. [PMID: 19585062 DOI: 10.1007/s00128-009-9818-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2009] [Accepted: 06/25/2009] [Indexed: 05/28/2023]
Abstract
Linfen is generally recognized as one of the most polluted industrial cities in China. Indeed, Linfen is affected by heavy polluting industries and faces pollution by polybrominated diphenyl ethers (PBDEs). For this study, ten surface soil samples covering all of Linfen were collected and analyzed for 42 BDE congeners. The total PBDEs concentration ranged from 0.064 to 136.1 ng g−1. Moreover, source analysis indicated that PBDEs may be associated with the prevalent use of Deca-BDE in the industrial area of the city. Furthermore, higher levels of PBDE contamination were observed in south Linfen due to the distribution of industrial plants.
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Affiliation(s)
- K Li
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, 100085 Beijing, People’s Republic of China.
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Fu S, Yang ZZ, Zhang L, Li K, Xu XB. Composition, distribution, and characterization of polybrominated diphenyl ethers in sandstorm depositions in Beijing, China. Bull Environ Contam Toxicol 2009; 83:193-198. [PMID: 19322505 DOI: 10.1007/s00128-009-9713-9] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2008] [Accepted: 03/16/2009] [Indexed: 05/27/2023]
Abstract
This study was conducted to determine the concentration of 8 polybrominated diphenyl ethers (PBDEs) in sandstorm depositions in Beijing, China. The PBDE concentrations in 10 samples collected in Beijing ranged from 8.47 to 29.02 ng g(-1), with BDE-209 as the predominant congener (>85%). Principal component analysis revealed that the major source of PBDEs in Beijing may be potentially associated with deca-BDE. Furthermore, increasing PBDE contamination was observed from northwest to east Beijing. Finally, possible factors affecting contamination of the sandstorm depositions were subsequently explored revealing a significant correlation between SigmaPBDEs and the minimum particle size of the sandstorm deposition samples.
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Affiliation(s)
- S Fu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Post Office Box 2871, Beijing, 100085, People's Republic of China.
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Yang ZZ, Zhao XR, Qin ZF, Fu S, Li XH, Qin XF, Xu XB, Jin ZX. Polybrominated diphenyl ethers in mudsnails (Cipangopaludina cahayensis) and sediments from an electronic waste recycling region in South China. Bull Environ Contam Toxicol 2009; 82:206-210. [PMID: 18982234 DOI: 10.1007/s00128-008-9600-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2008] [Accepted: 10/17/2008] [Indexed: 05/27/2023]
Abstract
Mudsnails and sediments from an electronic waste recycling region in South China were chosen to study the polybrominated diphenyl ethers (PBDEs) bioavailability of mudsnail in different ambient levels. Significant (p < 0.05) correlations of biota-sediment accumulation factor (BSAF) versus the reciprocal of PBDE concentration in sediment (1/Sed) occurred in all quantitative PBDE congeners except BDE-209, showed that the BSAFs of PBDEs in mudsnails were increased with reciprocal increasing ambient levels. The BDE-183 correlation of mudsnail versus sediment (r = 0.580) was much lower than the correlation of BDE-209 versus BDE-183 in mudsnails (r = 0.812), indicated the main source of BDE-183 in mudsnails was from the debromination of higher brominated PBDEs.
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Affiliation(s)
- Z Z Yang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, People's Republic of China
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Li K, Fu S, Yang ZZ, Xu XB. Composition, distribution and characterization of polybrominated diphenyl ethers (PBDEs) in the soil in Taiyuan, China. Bull Environ Contam Toxicol 2008; 81:588-593. [PMID: 18854905 DOI: 10.1007/s00128-008-9571-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2008] [Accepted: 10/02/2008] [Indexed: 05/26/2023]
Abstract
A total of 21 surface soil samples covering the whole territory of Taiyuan city were collected for analysis the 39 polybrominated diphenyl ethers (PBDEs). The total PBDEs concentration ranged from 0.016 to 211.416 ng g(-1) in urban soils and 5.961 to 144.162 ng g(-1) in industrial plant soils. PBDE homologues analysis and principal component analysis (PCA) revealed that the major source of PBDEs in Taiyuan might be potentially associated with the prevalent use of deca-BDE as a flame retardant. Furthermore, increasing PBDEs contamination was observed in north Taiyuan because of the degree of urbanization and the distribution of industrial plants.
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Affiliation(s)
- K Li
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, People's Republic of China
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Li MX, Wang D, Zhong ZY, Xiang DB, Li ZP, Xie JY, Yang ZZ, Jin F, Qing Y. Targeting truncated APE1 in mitochondria enhances cell survival after oxidative stress. Free Radic Biol Med 2008; 45:592-601. [PMID: 18515104 DOI: 10.1016/j.freeradbiomed.2008.05.007] [Citation(s) in RCA: 32] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2007] [Revised: 03/31/2008] [Accepted: 05/01/2008] [Indexed: 11/26/2022]
Abstract
The high steady-state level of mitochondrial DNA (mtDNA) oxidative lesions is assumed to be the result of high susceptibility to DNA damage attack and limited DNA repair capacity in mitochondria. As a key enzyme of base excision repair (BER), human apurinic/apyrimidinic endonuclease (APE1) is often scarce in mitochondria, and mitochondria-targeted APE1 with robust repair activity represents a promising therapeutic candidate. In this study, overexpression vectors of mitochondria-targeted truncated APE1 (mtAPE1) and that of full-length APE1 (flAPE1) were constructed and transfected to human umbilical vein endothelial cells to test their protective effects after hydrogen peroxide-induced oxidative stress. The overexpression of truncated APE1 was achieved at protein and enzyme activity levels in mitochondria of mtAPE1-transfected cells. In parallel, enhanced mtDNA repair capacity and increased cell survival were observed. MtAPE1 transfection also prevented apoptosis by blocking mitochondria-dependent pathways. In contrast, flAPE1 transfection rendered slight elevation of nuclear APE1 protein level and nuclear APE activity but no benefits for cell resistance to oxidative stress. The present results suggest that overexpression of the truncated APE1 in mitochondria appears to be a viable approach to protecting healthy cells from some deleterious effects of oxidative stress.
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Affiliation(s)
- Meng-Xia Li
- Cancer Center, Research Institute of Surgery, Daping Hospital, Third Military Medical University, No.10 Changjiang Zhilu, Daping Yuzhong District, Chongqing 400042, People's Republic of China
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Yang ZZ, Zhao XR, Zhao Q, Qin ZF, Qin XF, Xu XB, Jin ZX, Xu CX. Polybrominated diphenyl ethers in leaves and soil from typical electronic waste polluted area in South China. Bull Environ Contam Toxicol 2008; 80:340-344. [PMID: 18344015 DOI: 10.1007/s00128-008-9385-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2007] [Accepted: 02/25/2008] [Indexed: 05/26/2023]
Abstract
Polybrominated diphenyl ethers (PBDEs) in leaves and soil from typical e-waste polluted area in South China were investigated. The concentrations (ng/g dry weight) of PBDE congeners and summation operatorPBDE of five leaf samples were much lower than those in soil sample. The general patterns of summation di-BDEs to summation hepta-BDEs percentage distribution in leaf samples were similar to those of the soil sample, except the percentage of BDE209 which were lower than in soil. The percentages of summation di-BDEs to summation hepta-BDEs in soil were in the range of those in leaf samples. The results showed that the contamination of PBDEs in the leaf samples had good correlation with the soil around them.
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Affiliation(s)
- Z Z Yang
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, People's Republic of China
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Yang ZZ, Chen XH, Wang D. Experimental Study Enhancing the Chemosensitivity of Multiple Myeloma to Melphalan by Using a Tissue-Specific APE1-Silencing RNA Expression Vector. ACTA ACUST UNITED AC 2007; 7:296-304. [PMID: 17324338 DOI: 10.3816/clm.2007.n.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [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: 11/20/2022]
Abstract
PURPOSE Because of a developing resistance to chemotherapy agents, multiple myeloma (MM) has been an incurable disease until now. As a means to overcome MM tumor cell resistance and/or sensitize tumor cells to chemotherapeutic treatments currently used, we examined the role of human apurinic/apyrimidinic endonuclease 1 (APE1) in resistance and prognosis in patients with MM. PATIENTS AND METHODS Multiple myeloma cells were analyzed by using bone marrow specimens from 32 patients with MM and 10 normal volunteers. RESULTS The positive rate of APE1 protein expression was 65.6% in the bone marrow specimens of patients with MM with known clinical outcome. Positive rate of APE1 expression beyond grade 2 in the relapsed/refractory group was significantly higher than that in the untreated group. No positive results of grade > 2 were detected in bone marrow specimens from patients with noncancerous disease. It was also confirmed that the amount of APE1 protein in KM3 cells was positively correlated with the dose and action time of melphalan. Because APE1 was overexpressed in refractory/relapsed MM cells, siRNA-targeted technology was used to decrease APE1 levels in KM3 cells, with protein levels deceasing to 80%-90% within 24 hours and continuing to decease for 72 hours. The best dose and time of inhibiting expression of APE1 protein were 3 mug and 2 days long. A decrease in APE1 levels in siRNA-treated KM3 cells led to enhanced cell sensitization to melphalan. CONCLUSION The findings herein present prognostic and therapeutic implications for treating relapsed/refractory MM. The APE1-silencing RNA results demonstrate the feasibility of the therapeutic modulation of APE1 using a variety of molecules and approaches.
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Affiliation(s)
- Zhen-Zhou Yang
- Department of Hematology, Xinqiao Hospital, Third Military Medical University, Chongqing, PR China
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32
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Wang XT, Sun YZ, Li XH, Yang ZZ, Xu XB. Polychlorinated biphenyls in fish species from Guanting Reservoir, Beijing, People's Republic of China. Bull Environ Contam Toxicol 2006; 76:774-81. [PMID: 16786447 DOI: 10.1007/s00128-006-0987-x] [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] [Subscribe] [Scholar Register] [Received: 12/15/2005] [Accepted: 03/08/2006] [Indexed: 05/10/2023]
Affiliation(s)
- X T Wang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, People's Republic of China
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Cheng DX, Yang ZZ, Wang XT, Sun YZ, Xu XB. Organochlorine pesticides in tissues of catfish (Silurus asotus) from Guanting Reservoir, People's Republic of China. Bull Environ Contam Toxicol 2006; 76:766-73. [PMID: 16786446 DOI: 10.1007/s00128-006-0986-y] [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] [Subscribe] [Scholar Register] [Received: 11/12/2005] [Accepted: 03/08/2006] [Indexed: 05/10/2023]
Affiliation(s)
- D X Cheng
- College of Chemistry and Environmental Science, Henan Normal University, Xinxiang, Henan, People's Republic of China
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Li ZJ, Teng BX, Chen XH, Kong PY, Wang JG, Peng XG, Yang ZZ. [Leukemic bone marrow stromal cells in vitro protect leukemic cell line Jurkat cells from daunorubicin-induced apoptosis]. Ai Zheng 2005; 24:672-5. [PMID: 15946476] [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: 05/02/2023]
Abstract
BACKGROUND & OBJECTIVE Tumor microenvironment affects tumor cells growth. Bone marrow microenvironment may protect leukemic cells from drug-induced damages, but the mechanism is unclear. This study was to explore the protection of bone marrow stromal cells (BMSCs) on leukemic cells against chemotherapy and its mechanism. METHODS Normal and leukemic BMSCs were isolated using Percoll, and cocultured with human acute lymphocyte leukemic cell line Jurkat cells in vitro. After treatment of 0.5 micromol/L of daunorubicin (DNR), apoptosis and cell cycle distribution of Jurkat cells were analyzed by flow cytometry. RESULTS When treated with DNR for 24 h, apoptosis rate of normal BMSCs-cocultured Jurkat cells was significantly lower than that of Jurkat cells without coculture [(8.39+/-4.08)% vs. (16.02+/-1.00)%, P < 0.05], and apoptosis rate of leukemic BMSCs-cocultured Jurkat cells was significantly lower than that of normal BMSCs-cocultured Jurkat cells [(5.73+/-1.78)% vs. (8.39+/-4.08)%, P < 0.05]; G(0)/G(1) phase percentage of BMSCs-cocultured Jurkat cells was significantly higher than that of Jurkat cells without coculture (P < 0.05), but the difference between Jurkat cells cocultured with normal and leukemic BMSCs was not significant (P > 0.05). CONCLUSION Leukemic BMSCs may inhibit DNR-induced apoptosis in leukemic cells partly through G(0)/G(1) phase arrest.
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Affiliation(s)
- Zhong-Jun Li
- Department of Hematology, Xinqiao Hospital, The Third Military Medical University, Chongqing 400037, P. R. China
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Abstract
The present study was designed to test the hypothesis that hypoxia-inducible factor-1alpha (HIF-1alpha)-mediated transcriptional activation contributes to increased expression of heme oxygenase (HO) genes in renal medullary interstitial cells (RMICs). By Northern blot analysis, HO-1 mRNA expression was found to significantly increase in response to reduction of PO(2) in culture medium. However, HO-2 mRNA was not altered by hypoxia. This hypoxia-induced upregulation of HO-1 mRNA was significantly blocked by HIF-1alpha inhibition with ferrous ammonium sulfate. To further determine the role of HIF-1alpha in the activation of HO-1, the inducers of HIF-1alpha were used to address whether induction of HIF-1alpha stimulates HO-1 mRNA expression. Both desferrioxamine and CoCl(2) markedly increased HIF-1alpha mRNA and protein levels and resulted in the upregulation of HO-1 mRNA but not HO-2. Furthermore, inhibition of HIF-1alpha degradation by CBZ-LLL, an inhibitor of ubiquitin-proteasome, significantly increased HIF-1alpha protein and HO-1 mRNA but not HO-2 in these cells. Using cis-element oligodeoxynucleotide transfection to specifically decoy HIF-1alpha and block HIF-1alpha binding, increased mRNA expression of HO-1 in response to hypoxia and CoCl(2) was attenuated. In vitro nuclear run-on assays further confirmed that hypoxia and alterations of HIF-1alpha mRNA or protein levels significantly affected the formation of HO-1 mRNA. Taken together, our results indicate that HO-1, but not HO-2, is transcriptionally activated by hypoxia through HIF-1alpha-mediated mechanism in RMICs. This hypoxia-induced transcriptional activation may be one of the important mechanisms mediating increased expression of HO-1 in the renal medulla.
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Affiliation(s)
- Z Z Yang
- Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin 53226, USA
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Abstract
Hypoxia-inducible factor-1alpha (HIF-1alpha) is a transcription factor that regulates the oxygen-dependent expression of a number of genes. This transcription factor may contribute to the abundant expression of many genes in renal medullary cells that function normally under hypoxic conditions. The present study was designed to determine the characteristics of HIF-1alpha cDNA cloned from the rat kidney and the expression profile of HIF-1alpha in different kidney regions and to explore the mechanism activating or regulating HIF-1alpha expression in renal medullary cells. A 3,718-bp HIF-1alpha cDNA from the rat kidney was first cloned and sequenced using RT-PCR and TA cloning technique. It was found that 823 amino acids deduced from this renal HIF-1alpha cDNA had 99%, 96%, and 90% identity with rat, mouse, or human HIF-1alpha deposited in GenBank, respectively. The 3'-untranslated region of HIF-1alpha mRNA from the rat kidney contained seven AUUUA instability elements, five of which were found to be conserved among rat, mouse, and human HIF-1alpha. Northern blot analyses demonstrated a corticomedullary gradient of HIF-1alpha mRNA expression in the kidney, with the greatest abundance in the renal inner medulla. Western blot analyses also detected a higher HIF-1alpha protein level in the nuclear extracts from the renal medulla than the renal cortex. A classic loop diuretic, furosemide (10 mg/kg ip), markedly increased renal medullary Po(2) levels from 22.5 to 52.2 mmHg, which was accompanied by a significant reduction of HIF-1alpha transcripts in renal medullary tissue. In in vitro experiments, low Po(2), but not elevated osmolarity, was found to significantly increase HIF-1alpha mRNA in renal medullary interstitial cells and inner medullary collecting duct cells. These results indicate that HIF-1alpha is more abundantly expressed in the renal medulla compared with the renal cortex. Increased abundance of HIF-1alpha mRNA in the renal medulla may represent an adaptive response of renal medullary cells to low Po(2).
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MESH Headings
- 3' Untranslated Regions/genetics
- Amino Acid Sequence
- Animals
- Base Sequence
- Blotting, Northern
- Blotting, Western
- Cell Hypoxia
- Cloning, Molecular
- DNA, Complementary/chemistry
- DNA, Complementary/genetics
- Diuretics/pharmacology
- Furosemide/pharmacology
- Gene Expression Regulation/drug effects
- Hypoxia-Inducible Factor 1, alpha Subunit
- Kidney Cortex/drug effects
- Kidney Cortex/metabolism
- Kidney Medulla/cytology
- Kidney Medulla/drug effects
- Kidney Medulla/metabolism
- Molecular Sequence Data
- Osmolar Concentration
- Oxygen/pharmacology
- RNA, Messenger/drug effects
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Rats
- Sequence Alignment
- Sequence Analysis, DNA
- Sequence Homology, Amino Acid
- Sequence Homology, Nucleic Acid
- Sodium Chloride/pharmacology
- Transcription Factors/genetics
- Transcription Factors/metabolism
- Urea/pharmacology
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Affiliation(s)
- A P Zou
- Departments of Physiology and Pharmacology and Toxicology, Medical College of Wisconsin, Milwaukee, Wisconsin 53226, USA.
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37
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Wu ST, Yang ZZ, Zhou FL. [Reconstruction of heel by reversed island fibular musculocutaneous flap]. Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 2001; 15:211-3. [PMID: 11488026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
OBJECTIVE To explore the anatomical basis of blood supply and heel reconstruction by reversed island fibular musculocutaneous flap. METHODS The blood supply of fibular musculocutaneous flap and the biomechanical characteristics of heel were studied by anatomical examination. One case with right heel full defect because of explosion injury was repaired by transfer of reversed island fibular vessels. The fibular flap was 14 cm in length with part of peroneus muscle and long flexor muscle of great toe. RESULTS The lower part of fibular artery had plentiful anastomosis with anterior tibial artery and posterior tibial artery, which could provide ideal reversed blood supply. The rotatory point of vessel pedicle could be chosen according to the need of operation. The lowest site might be above 6 cm to lateral malleolus, and the vessel pedicle was 20 cm in length. The morphological feature of the reversed island fibular musculocutaneous flap was suitable to the biomechanical character of heel. The patient achieved satisfactory clinical result, the musculocutaneous flap survived well for 10 months of follow-up. CONCLUSION The reversed island fibular musculocutaneous flap provide a new method for repairing the severe heel defect, especially in full defect of calcaneus and cuboid bone.
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Affiliation(s)
- S T Wu
- Department of Orthopedic Surgery, Chinese Medical Hospital of Changning City, Changning Hunan, P. R. China 412500
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38
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Abstract
OBJECTIVES A cross sectional study was performed to find the concentrations of elements contained in the semen of workers exposed to trinitrotoluene (TNT). SUBJECTS AND METHODS Semen of exposed workers in two TNT plants located in He-Nan Province in 1992 were examined. RESULTS The average TNT concentrations in the workplace, except the packing site, were found to have exceeded the maximal allowable concentration (MAC, 1 mg/m3); skin contaminations of male workers exposed to TNT were higher after a shift than in controls, and correlated with the total blood concentrations of TNT, 4-amino-2, 6-dinitrotoluene (4A), and 2-amino-4, 6-dinitrotoluene (2A). Cu, Zn, Na, Mg, and Se concentrations were significantly decreased, but K, Ca, Co, Mn and Li contents were not significantly changed in the semen of workers exposed to TNT. Compared with the control group, the percentage of liquifying time of semen, the sperm malformation incidence, and viability in the men exposed to TNT were all significantly changed. CONCLUSIONS Men exposed to TNT have decreased concentrations of some elements is semen and altered semen physiology.
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Affiliation(s)
- H X Liu
- He-Nan Institute of Occupational Disease, Zheng-Zhou, China
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39
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Yang ZZ. [Application of enzyme linked immuno-electrophoresis for the diagnosis of tuberculosis]. Zhonghua Jie He He Hu Xi Za Zhi 1992; 15:72-4, 125. [PMID: 1394593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The technique of Enzyme linked immuno-electrophoresis (ELIEP) was established to detect the specific antibody against tubercle bacilli. The results of 730 cases showed that the sensitivity of this method is 97.33%, and the specificity, 97.5%. Thus this method is more sensitive than the ELISA methods which had bean published. The manipulation of ELIEP is simple, convenient, and fast, reagent stable. This method may be used in diagnosis of tuberculosis with reliability and efficiency.
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Affiliation(s)
- Z Z Yang
- Chinese PLA 370 Hospital, Xiangfan
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40
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Ye CY, Yang ZZ. [Determination of ethyl paraben in shengmaiyin oral liquid using gas chromatography]. Zhongguo Zhong Yao Za Zhi 1989; 14:539-40, 574. [PMID: 2511872] [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: 01/01/2023]
Abstract
This paper describes a gas chromatographic method for the determination of preservative--ethyl paraben in shengmaiyin Oral Liquid. The method is simple, rapid and accurate. The recovery is good (99.5%), and the coefficient of variation is 0.288%.
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41
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Isshiki K, Sawa T, Naganawa H, Matsuda N, Hattori S, Hamada M, Takeuchi T, Oosono M, Ishizuka M, Yang ZZ. 3-O-isobutyrylkinamycin C and 4-deacetyl-4-O-isobutyrylkinamycin C, new antibiotics produced by a Saccharothrix species. J Antibiot (Tokyo) 1989; 42:467-9. [PMID: 2708140 DOI: 10.7164/antibiotics.42.467] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- K Isshiki
- Institute of Microbial Chemistry, Tokyo, Japan
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42
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Gao ZF, Yang ZZ, Ma KC. The stimulative effect of injection epimedium on the growth of chick embryo femur in vitro. J TRADIT CHIN MED 1988; 8:305-6. [PMID: 3246893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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43
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Yu ZB, Wu SZ, Yang ZZ. [A preliminary study on memory disorders in patients with cor pulmonale at high altitude]. Zhonghua Nei Ke Za Zhi 1987; 26:690-1, 741. [PMID: 3451851] [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: 01/05/2023]
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44
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Ma KC, Gao ZF, Yang ZZ. [Stimulation effect of huangqi injection on the synthesis of glycosaminoglycan (GAG) of embryo chicken femoral in vitro]. Zhong Yao Tong Bao 1987; 12:39-41, 63. [PMID: 3446383] [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: 01/05/2023]
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45
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Ohba K, Nakayama H, Furihata K, Furihata K, Shimazu A, Seto H, Otake N, Yang ZZ, Xu LS, Xu WS. Albothricin, a new streptothricin antibiotic. J Antibiot (Tokyo) 1986; 39:872-5. [PMID: 3015854 DOI: 10.7164/antibiotics.39.872] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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46
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Cui GF, Li ZM, Yang ZZ, Wang JH. Lateral rotary manipulative maneuver in the treatment of subluxation and synovial entrapment of lumbar facet joints. J TRADIT CHIN MED 1984; 4:211-2. [PMID: 6570151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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