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Sun QW, Chen JZ, Liao XF, Huang XL, Liu JM. Identification of keystone taxa in rhizosphere microbial communities using different methods and their effects on compounds of the host Cinnamomum migao. Sci Total Environ 2024; 926:171952. [PMID: 38537823 DOI: 10.1016/j.scitotenv.2024.171952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 03/21/2024] [Accepted: 03/23/2024] [Indexed: 04/02/2024]
Abstract
Exploring keystone taxa affecting microbial community stability and host function is crucial for understanding ecosystem functions. However, identifying keystone taxa from humongous microbial communities remains challenging. We collected 344 rhizosphere and bulk soil samples from the endangered plant C. migao for 2 years consecutively. Used high-throughput sequencing 16S rDNA and ITS to obtain the composition of bacterial and fungal communities. We explored keystone taxa and the applicability and limitations of five methods (SPEC-OCCU, Zi-Pi, Subnetwork, Betweenness, and Module), as well as the impact of microbial community domain, time series, and rhizosphere boundary on the identification of keystone taxa in the communities. Our results showed that the five methods, identified abundant keystone taxa in rhizosphere and bulk soil microbial communities. However, the keystone taxa shared by the rhizosphere and bulk soil microbial communities over time decreased rapidly decrease in the five methods. Among five methods on the identification of keystone taxa in the rhizosphere community, Module identified 113 taxa, SPEC-OCCU identified 17 taxa, Betweenness identified 3 taxa, Subnetwork identified 3 taxa, and Zi-Pi identified 4 taxa. The keystone taxa are mainly conditionally rare taxa, and their ecological functions include chemoheterotrophy, aerobic chemoheterotrophy, nitrate reduction, and anaerobic photoautotrophy. The results of the random forest model and structural equation model predict that keystone taxa Mortierella and Ellin6513 may have an effects on the accumulation of 1, 4, 7, - Cycloundecatriene, 1, 5, 9, 9-tetramethyl-, Z, Z, Z-, beta-copaene, bicyclogermacrene, 1,8-Cineole in C. migao fruits, but their effects still need further evidence. Our study evidence an unstable microbial community in the bulk soil, and the definition of microbial boundary and ecologically functional affected the identification of keystone taxa in the community. Subnetwork and Module are more in line with the definition of keystone taxa in microbial ecosystems in terms of maintaining community stability and hosting function.
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Affiliation(s)
- Qing-Wen Sun
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, China; Guizhou Province Key Laboratory of Chinese Pharmacology and Pharmacognosy, 550025, China
| | - Jing-Zhong Chen
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, China; Guizhou Province Key Laboratory of Chinese Pharmacology and Pharmacognosy, 550025, China.
| | | | | | - Ji-Ming Liu
- College of Forestry, Guizhou University, Guiyang 550025, China
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Li R, Li WL, Yuan GS, Pang HJ, Li Q, Hu XY, Guo YB, Chen JZ, Zang MY. [Study on the comparison of postoperative liver injury caused by hepatic arterial perfusion chemotherapy combined with targeted immunotherapy with hepatic arterial chemoembolization combined with targeted immunotherapy for intermediate-and advanced-stage liver cancer]. Zhonghua Gan Zang Bing Za Zhi 2023; 31:1163-1168. [PMID: 38238949 DOI: 10.3760/cma.j.cn501113-20230827-00070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 01/23/2024]
Abstract
Objective: To compare the postoperative liver function injury condition in patients with intermediate-and advanced-stage hepatocellular carcinoma (HCC) treated with hepatic artery infusion chemotherapy (HAIC) and hepatic artery chemoembolization (TACE) combined with immune checkpoint inhibitors (ICIs) and multi-target tyrosine kinase inhibitors (TKIs). Methods: Patients with intermediate-and advanced-stage HCC who were admitted and treated with HAIC/TACE+ICIs+TKIs therapy at Nanfang Hospital of Southern Medical University from January 2019 to November 2021, with follow-up up to July 2023, were retrospectively enrolled. The results of liver function tests within one week before interventional surgery and on the first day after surgery were recorded. The degree of postoperative liver injury was graded according to the common terminology criteria for adverse events 5.0 (CTCAE 5.0). The treatment efficacy was evaluated according to RECIST 1.1 criteria. Measurement data were compared between groups using a t-test or a non-parametric rank sum test. Enumeration data were compared between the groups using the χ(2) test or Fisher's exact probability method. The survival condition differences were analyzed by the log-rank method. Results: This study included 82 and 77 cases in the HAIC and TACE groups. There were no statistically significant differences between the two groups of patients in terms of gender, age, physical condition score, number of tumors, presence or absence of liver cirrhosis, Child-Pugh grade, albumin-bilirubin (ALBI) grade, and combined ICIs and TKIs . The HAIC group had later tumor staging, a greater tumor burden, poorer liver reserve function, and a larger proportion of patients in stage C (81.7% vs. 63.6%), χ(2)=6.573, P = 0.01). There were 53 cases (64.6% vs. 32.5%) with a maximum tumor diameter of ≥ 10cm, χ(2)=16.441, P < 0.001), and more patients had a retention rate of ≥ 10% for indocyanine green (ICG) at 15 minutes (68.3% vs. 51.9%, P = 0.035). The postoperative incidence rate of increased levels of alanine aminotransferase, aspartate aminotransferase, and total bilirubin was significantly lower in the HAIC group than that in the TACE group (28.0% vs. 63.6%, χ(2)=20.298, P < 0.001, 54.9% vs. 85.7%, χ(2)=17.917, P < 0.001;40.2% vs. 55.8%, χ(2)=3.873, P = 0.049). The number of patients with postoperative ALBI grade 3 was significantly lower in the HAIC group than that in the TACE group (6.1% vs. 16.9%, χ(2)=4.601, P = 0.032). There was no statistically significant difference in the incidence rate of postoperative hypoalbuminemia, activated partial thromboplastin time, or increased international standardized ratio between the two groups of patients. There was no statistically significant difference in median progression-free survival (7.3 months vs. 8.2 months, P = 0.296) or median overall survival (16.5 months vs. 21.9 months, P = 0.678) between the two groups of patients. Conclusion: The incidence rate of postoperative liver injury is higher in patients with intermediate-and advanced-stage HCC treated with TACE combined with ICIs and TKIs than in patients with HAIC combined with ICIs and TKIs.
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Affiliation(s)
- R Li
- Hepatology Unit and Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - W L Li
- Hepatology Unit and Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - G S Yuan
- Hepatology Unit and Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - H J Pang
- Division of Vascular and Interventional Radiology, Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Q Li
- Hepatology Unit and Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - X Y Hu
- Hepatology Unit and Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Y B Guo
- Hepatology Unit and Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - J Z Chen
- Hepatology Unit and Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - M Y Zang
- Hepatology Unit and Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
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Dong SY, Deng SY, Fan R, Chen JZ, Cheng X, Hao X, Dai WC. [Predictive value of aMAP risk score for early recurrence of small hepatocellular carcinoma after microwave ablation]. Zhonghua Nei Ke Za Zhi 2023; 62:1329-1334. [PMID: 37935500 DOI: 10.3760/cma.j.cn112138-20221108-00835] [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: 11/09/2023]
Abstract
Objective: To explore the value of the aMAP risk score (age, male, albumin-bilirubin, and platelets) to predict early recurrence within one year after microwave ablation in patients with small hepatocellular carcinoma. Methods: This was a retrospective study that enrolled 142 patients diagnosed with hepatocellular carcinoma who were treated with microwave ablation in the Department of Hepatology Unit of Nanfang Hospital, Southern Medical University from July 2016 to July 2021. The cohort enrolled 121 male and 21 female patients, including 110 patients that were <60 years old. All the patients were followed-up after microwave ablation to evaluate residual tumor and recurrence of tumor by computed tomography or magnetic resonance imaging. The observation indices mainly included general data and imaging data of patients. Using the X-tile tools, patients were divided into two groups: a high aMAP score group and a low aMAP score group. Multivariate Cox regression analysis was conducted for comparison of independent risk factors. Results: Multivariate Cox regression showed that high aMAP score, maximum tumor diameter >20 mm, and high AFP were the independent risk factors of early recurrence (all P<0.05). Kaplan-Meier survival curves showed that the median recurrence-free survival was 25.5 months in the low aMAP score group and 6.1 months in the high aMAP score group (P=0.001). Conclusions: The aMAP score could predict the early recurrence within 1 year of small hepatocellular carcinoma after microwave ablation. Patients with high aMAP score should undergo rigorous postoperative follow-up evaluations..
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Affiliation(s)
- S Y Dong
- Department of Infectious Diseases and Hepatology Unit, Nanfang Hospital, Southern Medical University, State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Guangdong Provincial Institute of Liver Diseases, Guangzhou 510515, China First Clinical Medical College, Southern Medical University, Guangzhou, Guangzhou, 510515, China
| | - S Y Deng
- Department of Infectious Diseases and Hepatology Unit, Nanfang Hospital, Southern Medical University, State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Guangdong Provincial Institute of Liver Diseases, Guangzhou 510515, China
| | - R Fan
- Department of Infectious Diseases and Hepatology Unit, Nanfang Hospital, Southern Medical University, State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Guangdong Provincial Institute of Liver Diseases, Guangzhou 510515, China
| | - J Z Chen
- Department of Infectious Diseases and Hepatology Unit, Nanfang Hospital, Southern Medical University, State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Guangdong Provincial Institute of Liver Diseases, Guangzhou 510515, China
| | - X Cheng
- Department of Infectious Diseases and Hepatology Unit, Nanfang Hospital, Southern Medical University, State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Guangdong Provincial Institute of Liver Diseases, Guangzhou 510515, China
| | - X Hao
- Department of Infectious Diseases and Hepatology Unit, Nanfang Hospital, Southern Medical University, State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Guangdong Provincial Institute of Liver Diseases, Guangzhou 510515, China
| | - W C Dai
- Department of Infectious Diseases and Hepatology Unit, Nanfang Hospital, Southern Medical University, State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Guangdong Provincial Institute of Liver Diseases, Guangzhou 510515, China
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Peng L, Xu X, Liao X, Liu J, Chen J. Ampelocalamus luodianensis (Poaceae), a plant endemic to karst, adapts to resource heterogeneity in differing microhabitats by adjusting its biomass allocation. Glob Ecol Conserv 2023. [DOI: 10.1016/j.gecco.2023.e02374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
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Bao HY, Wang W, Sun HB, Chen JZ. Binding modes of GDP, GTP and GNP to NRAS deciphered by using Gaussian accelerated molecular dynamics simulations. SAR QSAR Environ Res 2023; 34:65-89. [PMID: 36762439 DOI: 10.1080/1062936x.2023.2165542] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 12/31/2022] [Indexed: 06/18/2023]
Abstract
Probing binding modes of GDP, GTP and GNP to NRAS are of significance for understanding the regulation mechanism on the activity of RAS proteins. Four separate Gaussian accelerated molecular dynamics (GaMD) simulations were performed on the apo, GDP-, GTP- and GNP-bound NRAS. Dynamics analyses suggest that binding of three ligands highly affects conformational states of the switch domains from NRAS, which disturbs binding of NRAS to its effectors. The analyses of free energy landscapes (FELs) indicate that binding of GDP, GTP and GNP induces more energetic states of NRAS compared to the apo NRAS but the presence of GNP makes the switch domains more ordered than binding of GDP and GNP. The information of interaction networks of ligands with NRAS reveals that the π-π interaction of residue F28 and the salt bridge interactions of K16 and D119 with ligands stabilize binding of GDP, GTP and GNP to NRAS. Meanwhile magnesium ion plays a bridge role in interactions of ligands with NRAS, which is favourable for associations of GDP, GTP and GNP with NRAS. This work is expected to provide useful information for deeply understanding the function and activity of NRAS.
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Affiliation(s)
- H Y Bao
- School of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - W Wang
- School of Science, Shandong Jiaotong University, Jinan, China
| | - H B Sun
- School of Science, Shandong Jiaotong University, Jinan, China
| | - J Z Chen
- School of Science, Shandong Jiaotong University, Jinan, China
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6
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Chen K, Chang L, Chen JZ, Wei X, Guo GJ, Lu JR, Wang K, Kang LN, Wang L, Xu B. [A case of primary cardiac lymphoma diagnosed by intravenous right atrial catheter forceps biopsy]. Zhonghua Xin Xue Guan Bing Za Zhi 2022; 50:1105-1107. [PMID: 36418280 DOI: 10.3760/cma.j.cn112148-20220303-00143] [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: 06/16/2023]
Affiliation(s)
- K Chen
- Department of Cardiology, Nanjing Drum Tower Hospital, Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - L Chang
- Department of Cardiology, Nanjing Drum Tower Hospital, Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - J Z Chen
- Department of Cardiology, Nanjing Drum Tower Hospital, Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - X Wei
- Department of Cardiology, Nanjing Drum Tower Hospital, Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - G J Guo
- Department of Ultrasound, Nanjing Drum Tower Hospital, Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - J R Lu
- Department of Cardiology, Nanjing Drum Tower Hospital, Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - K Wang
- Department of Cardiology, Nanjing Drum Tower Hospital, Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - L N Kang
- Department of Cardiology, Nanjing Drum Tower Hospital, Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - L Wang
- Department of Cardiology, Nanjing Drum Tower Hospital, Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - Biao Xu
- Department of Cardiology, Nanjing Drum Tower Hospital, Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
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Huai B, Liang MJ, Bai M, He HJ, Chen JZ, Wu H. Localization of CgVPE1 in secondary cell wall formation during tracheary element differentiation in the pericarp of Citrus grandis 'Tomentosa' fruits. Planta 2022; 256:89. [PMID: 36169724 DOI: 10.1007/s00425-022-04001-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Accepted: 09/19/2022] [Indexed: 06/16/2023]
Abstract
CgVPE1 is important in the differentiation of TE cells in C. grandis 'Tomentosa' fruits as it may directly affects secondary cell wall construction while participating in PCD. The vacuolar processing enzyme (VPE) plays an important role in both developmental and environmentally inducible programmed cell death (PCD); it was originally identified as a cysteine protease localized in the vacuole to activate and mature vacuolar proteins in plants. Interestingly, we found a VPE called CgVPE1 to be associated with deposition of the secondary cell wall in tracheary element (TE) cells in the pericarp of Citrus grandis 'Tomentosa' fruits. We then used ultrathin sections and the TUNEL assay to verify that PCD is involved in TE development. Furthermore, CgVPE1 was found to be mainly expressed in secretory cavities and TEs in the pericarp of Citrus grandis 'Tomentosa' fruits. Immunolocalization of CgVPE1 in the pericarp indicated that CgVPE1 is mainly distributed in the central large vacuole, endoplasmic reticulum, Golgi vesicles, cytosol, and secondary wall before TE maturation. CgVPE1 appeared earlier in the endoplasmic reticulum and Golgi vesicles of TEs cells. The vesicles containing CgVPE1 near the large central vacuole and secondary wall were observed, respectively. CgVPE1 proteins content in the cytoplasm decreased sharply, while the CgVPE1 content in the secondary cell wall did not change significantly after vacuole rupture. CgVPE1 protein contents in the secondary cell wall were significantly reduced until the TE cells developed into hollow thick-walled cells. Furthermore, labeling of VPE homologues in Arabidopsis thaliana using immunoelectron microscopy with anti-CgVPE1 antibody revealed that VPE homologues were specifically distributed in the secondary cell wall of stem TEs. Overall, these results suggested that CgVPE1 is not only involved PCD during TE cell development; furthermore, it may directly participate in the construction of plant secondary cell walls.
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Affiliation(s)
- B Huai
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, 510642, China
| | - M J Liang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, 510642, China
| | - M Bai
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, 510642, China
- Guangdong Technology Research Center for Traditional Chinese Veterinary Medicine and Natural Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - H J He
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, 510642, China
- Guangdong Technology Research Center for Traditional Chinese Veterinary Medicine and Natural Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - J Z Chen
- College of Horticulture, South China Agricultural University, Guangzhou, 510642, China
| | - H Wu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, 510642, China.
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China.
- Guangdong Technology Research Center for Traditional Chinese Veterinary Medicine and Natural Medicine, South China Agricultural University, Guangzhou, 510642, China.
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Cheng X, Huang J, Li WF, Zhong T, Cai LJ, Li H, Guo YB, Chen JZ. [Analysis of the effect of microwave ablation in the treatment of small liver cancer]. Zhonghua Gan Zang Bing Za Zhi 2021; 29:1059-1062. [PMID: 34933423 DOI: 10.3760/cma.j.cn501113-20200411-00176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To explore the clinical effect of microwave ablation in the treatment of early small liver cancer (≤3 cm). Methods: 103 cases with small liver cancer (tumor number < 3 and maximum tumor diameter < 3 cm) who underwent microwave ablation from November 2016 to November 2018 were retrospectively collected. The rate of residual lesions, recurrence rate one-year after the operation, and surgical complications were observed and grouped according to tumor size (< 2 cm and≥2 cm group) and tumor numbers (solitary and 2 ~ 3 lesion groups). The therapeutic effects of each group were compared and analyzed. Results: The tumor residual rate and one-year recurrence rate of small liver cancer after microwave ablation were 11.7% and 35.0%, respectively. The post-ablation syndrome incidence rate was 52.4%, with no serious adverse events. Compared with tumors < 2 cm, patients with≥2 cm had a higher postoperative residual rate (χ(2) = 7.651, P = 0.006), and the one-year recurrence rate of more solitary nodular tumors was lower (χ(2) = 10.125, P = 0.001). Conclusion: Microwave ablation is a safe and effective treatment for early small liver cancer, and it is more effective for small solitary nodules (< 2 cm).
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Affiliation(s)
- X Cheng
- Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - J Huang
- Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - W F Li
- Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - T Zhong
- Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - L J Cai
- Health Management Center, Nanfang Hospital, Southern Medical University, Guangzhou510515, China
| | - H Li
- Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Y B Guo
- Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - J Z Chen
- Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
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Abstract
Molecular targeted drugs are the first choice for systemic treatment of liver cancer. In the past decade, several anti-liver cancer targeted drugs have been launched. More recently, immunotherapy has become a dazzling nova in the field of systemic treatment of liver cancer. Nivolumab and pembrolizumab have been approved as second-line treatments for patients with advanced hepatocellular carcinoma treated with sorafenib. However, the effect of single-agent treatment is always unsatisfactory in advanced liver cancer. An increasing number of evidences suggests that molecular targeted drugs have important immunomodulatory effects for liver cancer, and several targeted combined immunotherapies have also shown promising clinical effectiveness. This paper reviews the immunomodulatory effects of several molecular targeted drugs in the field of liver cancer.
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Affiliation(s)
- X Cheng
- Department of Infectious Diseases, Nanfang Hospital of Southern Medical University, Guangzhou 510515, China
| | - J Z Chen
- Department of Infectious Diseases, Nanfang Hospital of Southern Medical University, Guangzhou 510515, China
| | - Y B Guo
- Department of Infectious Diseases, Nanfang Hospital of Southern Medical University, Guangzhou 510515, China
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Gu L, An YB, Ren MY, Wang Q, Zhang HY, Yu G, Chen JZ, Wu M, Xiao Y, Fu ZC, Zhang H, Tong WD, Ma D, Xu Q, Yao HW, Zhang ZT. [Incidence and risk factors of anastomotic leak after transanal total mesorectal excision in China: a retrospective analysis based on national database]. Zhonghua Wei Chang Wai Ke Za Zhi 2021; 24:505-512. [PMID: 34148315 DOI: 10.3760/cma.j.cn.441530-20210226-00084] [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: Transanal total mesorectal excision (taTME) was a very hot topic in the first few years since its appearance, but now more introspections and controversies on this procedure have emerged. One of the reasons why the Norwegian Ministry of Health stopped taTME was the high incidence of postoperative anastomotic leak. In current study, the incidence and risk factors of anastomotic leak after taTME were analyzed based on the data registered in the Chinese taTME Registry Collaborative (CTRC). Methods: A case-control study was carried out. Between November 15, 2017 and December 31, 2020, clinical data of 1668 patients undergoing taTME procedure registered in the CTRC database from 43 domestic centers were collected retrospectively. After excluding 98 cases without anastomosis and 109 cases without complete postoperative complication data, 1461 patients were finally enrolled for analysis. There were 1036 males (70.9%) and 425 females (29.1%) with mean age of (58.2±15.6) years and mean body mass index of (23.6±3.8) kg/m(2). Anastomotic leak was diagnosed and classified according to the International Study Group of Rectal Cancer (ISREC) criteria. The risk factors associated with postoperative anastomotic leak cases were analyzed. The impact of the cumulative number of taTME surgeries in a single center on the incidence of anastomotic leak was evaluated. As for those centers with the number of taTME surgery ≥ 40 cases, incidence of anastomic leak between 20 cases of taTME surgery in the early and later phases was compared. Results: Of 1461 patients undergoing taTME, 103(7.0%) developed anastomotic leak, including 71 (68.9%) males and 32 (31.1%) females with mean age of (59.0±13.9) years and mean body mass index of (24.5±5.7) kg/m(2). The mean distance between anastomosis site and anal verge was (2.6±1.4) cm. Thirty-nine cases (37.9%) were classified as ISREC grade A, 30 cases (29.1%) as grade B and 34 cases (33.0%) as grade C. Anastomotic leak occurred in 89 cases (7.0%,89/1263) in the laparoscopic taTME group and 14 cases (7.1%, 14/198) in the pure taTME group. Multivariate analysis showed that hand-sewn anastomosis (P=0.004) and the absence of defunctioning stoma (P=0.013) were independently associated with anastomotic leak after taTME. In the 16 centers (37.2%) which performed ≥ 30 taTME surgeries with cumulative number of 1317 taTME surgeries, 86 cases developed anastomotic leak (6.5%, 86/1317). And in the 27 centers which performed less than 30 taTME surgeries with cumulative number of 144 taTME surgeries, 17 cases developed anastomotic leak (11.8%, 17/144). There was significant difference between two kinds of center (χ(2)=5.513, P=0.019). Thirteen centers performed ≥ 40 taTME surgeries. In the early phase (the first 20 cases in each center), 29 cases (11.2%, 29/260) developed anastomotic leak, and in the later phase, 12 cases (4.6%, 12/260) developed anastomotic leak. The difference between the early phase and the later phase was statistically significant (χ(2)=7.652, P=0.006). Conclusion: The incidence of anastomotic leak after taTME may be reduced by using stapler and defunctioning stoma, or by accumulating experience.
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Affiliation(s)
- L Gu
- Department of Gastrointestinal Surgery, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200127, China
| | - Y B An
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University; Beijing Key Laboratory of Cancer Invasion and Metastasis Research & National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - M Y Ren
- Department of Gastrointestinal Surgery, The Affiliated Nanchong Central Hospital of North Sichuan Medical College, Nanchong 637900, Sichuan Province, China
| | - Q Wang
- Department of Gastrointestinal Surgery, The First Hospital of Jilin University, Changchun 130021, China
| | - H Y Zhang
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400042, China
| | - G Yu
- Department of Gastrointestinal Surgery, Linzi People's Hospital, Linzi 255200, Shandong Province, China
| | - J Z Chen
- Department of Surgery, Koo Foundation, Sun Yat-sen Cancer Center, Taipei, Taiwan 112, China
| | - M Wu
- Department of Gastrointestinal Hernial Surgery, Yibin Second People's Hospital, Yibin 644000, Sichuan Province, China
| | - Y Xiao
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Z C Fu
- Department of Surgery, Mary Hospital, Hong Kong 999077, China
| | - H Zhang
- Department of Colorectal Cancer, Shengjing Hospital, China Medical University, Shenyang 110004, China
| | - W D Tong
- Department of General Surgery, Daping Hospital, Army Medical University, Chongqing 400042, China
| | - D Ma
- Department of General Surgery, Xinqiao Hospital, Army Medical University, Chongqing 400037, China
| | - Q Xu
- Department of Gastrointestinal Surgery, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200127, China
| | - H W Yao
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University; Beijing Key Laboratory of Cancer Invasion and Metastasis Research & National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - Z T Zhang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University; Beijing Key Laboratory of Cancer Invasion and Metastasis Research & National Clinical Research Center for Digestive Diseases, Beijing 100050, China
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Liang SS, Liu XG, Cui YX, Zhang SL, Zhang QG, Chen JZ. Molecular mechanism concerning conformational changes of CDK2 mediated by binding of inhibitors using molecular dynamics simulations and principal component analysis. SAR QSAR Environ Res 2021; 32:1-22. [PMID: 34130570 DOI: 10.1080/1062936x.2021.1934896] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Accepted: 05/23/2021] [Indexed: 06/12/2023]
Abstract
Cyclin-dependent kinase 2 (CDK2) has been regarded as a promising drug target for anti-tumour agents. In this study, molecular dynamics (MD) simulations and principal component (PC) analysis were used to explore binding mechanism of three inhibitors 1PU, CDK, 50Z to CDK2 and influences of their bindings on conformational changes of CDK2. The results show that bindings of inhibitors yield obvious impacts on internal dynamics, movement patterns and conformational changes of CDK2. In addition, molecular mechanics generalized Born surface area (MM-GBSA) was applied to calculate binding free energies between three inhibitors and CDK2 and evaluate their binding ability to CDK2. The results show that CDK has the strongest binding to CDK2 among the current three inhibitors. Residue-based free energy decomposition method was further utilized to decode the contributions of a single residue to binding of inhibitors, and it was found that three inhibitors not only produce hydrogen bonding interactions and hydrophobic interactions with key residues of CDK2, which promotes binding of three inhibitors to CDK2, but also share similar binding modes. This work is expected to be helpful for design of efficient drugs targeting CDK2.
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Affiliation(s)
- S S Liang
- School of Physics and Electronics, Shandong Normal University, Jinan, China
| | - X G Liu
- School of Physics and Electronics, Shandong Normal University, Jinan, China
| | - Y X Cui
- School of Physics and Electronics, Shandong Normal University, Jinan, China
| | - S L Zhang
- School of Physics and Electronics, Shandong Normal University, Jinan, China
| | - Q G Zhang
- School of Physics and Electronics, Shandong Normal University, Jinan, China
| | - J Z Chen
- School of Science, Shandong Jiaotong University, Jinan, China
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Yuan GS, He WM, Hu XY, Li Q, Zang MY, Cheng X, Huang W, Ruan J, Wang JJ, Hou JL, Chen JZ. [Clinical efficacy and safety analysis of camrelizumab combined with apatinib as a second-line therapy for unresectable hepatocellular carcinoma: a multicenter retrospective study]. Zhonghua Gan Zang Bing Za Zhi 2021; 29:326-331. [PMID: 33979958 DOI: 10.3760/cma.j.cn501113-20210329-00148] [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 clinical efficacy and safety of camrelizumab combined with apatinib as a second-line therapy for unresectable hepatocellular carcinoma (HCC). Methods: Ninety-four cases with mid-and advanced-stage HCC who received camrelizumab combined with apatinib as second-line treatment were enrolled. Routine blood test, blood biochemical indexes, tumor stage, tumor imaging characteristics, previous treatment strategies and other clinical data before treatment were documented. Imaging examination follow-up results and adverse reactions during treatment were followed up until the end of follow-up or loss of follow-up or death. Kaplan-Meier method was used to analyze the clinical efficacy. Results: As of the last follow-up, 94 cases with mid-and advanced-stage HCC had received camrelizumab combined with apatinib as second-line treatment. Among them, 15 cases were lost to follow-up, 31 cases died, and 48 cases survived. The overall remission rate was 31.9%. The overall disease control rate was 71.3%. The median time to disease-free progression was 6.6 months. The median time to disease progression was not yet available. The 1-year cumulative survival rate was 62.3%. Grade 3 and above adverse reactions mainly included were thrombocytopenia (7.4%), abdominal pain (4.3%), active hepatitis (4.3%), leukopenia (4.3%), diarrhea (3.2%), hand-foot syndrome (3.2%). All adverse reactions were effectively controlled. Conclusion: Camrelizumab combined with apatinib can effectively prolong the survival period of patients with mid-and advanced-stage HCC, and it is well tolerated.
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Affiliation(s)
- G S Yuan
- Department of Infectious Diseases and Hepatology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - W M He
- Department of Infectious Diseases and Hepatology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - X Y Hu
- Department of Infectious Diseases and Hepatology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Q Li
- Department of Infectious Diseases and Hepatology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - M Y Zang
- Department of Infectious Diseases and Hepatology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - X Cheng
- Department of Hepatology, Zengcheng Branch of Nanfang Hospital, Southern Medical University, Zengcheng 511300, China
| | - W Huang
- Department of Oncology, Shunde Hospital, Southern Medical University, Shunde 528300, China
| | - J Ruan
- Department of Medical Oncology, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310000, China
| | - J J Wang
- Department of Infectious Disease, the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou 510260, China
| | - J L Hou
- Department of Infectious Diseases and Hepatology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - J Z Chen
- Department of Infectious Diseases and Hepatology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
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Huang XL, Chen JZ, Wang D, Deng MM, Wu MY, Tong BL, Liu JM. Simulated atmospheric nitrogen deposition inhibited the leaf litter decomposition of Cinnamomum migao H. W. Li in Southwest China. Sci Rep 2021; 11:1748. [PMID: 33462355 PMCID: PMC7814063 DOI: 10.1038/s41598-021-81458-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 07/21/2020] [Accepted: 01/07/2021] [Indexed: 01/29/2023] Open
Abstract
Atmospheric nitrogen (N) deposition could affect various ecological processes in forest ecosystems, including plant litter decomposition and nutrient cycling. However, the mechanism of underlying litter decomposition and nutrient cycling of Cinnamomum migao under N deposition remains unclear. Therefore, we conducted a simulated N deposition experiment including four onsite treatments to assess the effects of N input on C. migao leaf litter decomposition, nutrient release, and soil enzyme activity. The results showed that simulated N deposition significantly increased the amount of total residual mass and lignin and cellulose, decreased the decomposition rate, and suppressed net nutrient release. N input increased C, N, and P ratios as decomposition progressed, and the proportion of mass remaining was positively correlated with the proportions of lignin and cellulose remaining at the later stage of decomposition. The differences in soil enzyme activity were primarily due to enzyme type and sampling time. We conclude that simulated N deposition significantly suppressed the leaf litter decomposition of C. migao by mainly altering the chemical properties and suppressing the decomposition of the organic matter in leaf litter. Lignin might have played an important role in the loss of leaf litter biomass at the later stage of decomposition.
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Affiliation(s)
- Xiao-Long Huang
- grid.443382.a0000 0004 1804 268XDepartment of Ecology, College of Forestry, Guizhou University, Guiyang, 550025 China ,grid.443382.a0000 0004 1804 268XForest Ecology Research Center of Guizhou University, Guiyang, 550025 China
| | - Jing-Zhong Chen
- grid.443382.a0000 0004 1804 268XDepartment of Ecology, College of Forestry, Guizhou University, Guiyang, 550025 China ,grid.443382.a0000 0004 1804 268XForest Ecology Research Center of Guizhou University, Guiyang, 550025 China
| | - Deng Wang
- grid.443382.a0000 0004 1804 268XDepartment of Ecology, College of Forestry, Guizhou University, Guiyang, 550025 China ,grid.443382.a0000 0004 1804 268XForest Ecology Research Center of Guizhou University, Guiyang, 550025 China
| | - Ming-Ming Deng
- grid.443382.a0000 0004 1804 268XDepartment of Ecology, College of Forestry, Guizhou University, Guiyang, 550025 China ,grid.443382.a0000 0004 1804 268XForest Ecology Research Center of Guizhou University, Guiyang, 550025 China
| | - Meng-Yao Wu
- grid.443382.a0000 0004 1804 268XDepartment of Ecology, College of Forestry, Guizhou University, Guiyang, 550025 China ,grid.443382.a0000 0004 1804 268XForest Ecology Research Center of Guizhou University, Guiyang, 550025 China
| | - Bing-Li Tong
- grid.443382.a0000 0004 1804 268XDepartment of Ecology, College of Forestry, Guizhou University, Guiyang, 550025 China ,grid.443382.a0000 0004 1804 268XForest Ecology Research Center of Guizhou University, Guiyang, 550025 China
| | - Ji-Ming Liu
- grid.443382.a0000 0004 1804 268XDepartment of Ecology, College of Forestry, Guizhou University, Guiyang, 550025 China ,grid.443382.a0000 0004 1804 268XForest Ecology Research Center of Guizhou University, Guiyang, 550025 China
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Du YX, Chen JZ, Wang J, Chen BQ. [Clinical analysis of delayed epistaxis after craniofacial trauma in 16 patients]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2016; 30:1343-1345;1351. [PMID: 29798453 DOI: 10.13201/j.issn.1001-1781.2016.17.001] [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] [Received: 06/23/2016] [Indexed: 11/12/2022]
Abstract
Objective:To investigate the etiology,clinical presentations,diagnosis and treatment of delayed epistaxis after craniocerebral trauma.Method:A retrospective analysis was made including 16 cases who had the traumatic carotid artery injury with massive delayed epistaxis.All of them were finally diagnosed by digital substraction angiography(DSA).Final clinical outcome,radiographic data and follow-up data were analyzed.Result:Two cases of traumatic pesudoaneurysm from internal maxillary artery were embolized with polyvinyl alcohol particles and gelatin sponge.Fourteen cases of traumatic pesudoaneurysm located in ICA cavernous segment was embolized by covered stent.The covered stent placement was successful in all 14 pseudoaneurysms.No procedure-related complications or deaths occurred during follow-up except one of the case with visual field defects and another case with vision loss.Conclusion:Patients with delayed massive epistaxis or recurrent epistaxis after craniofacial trauma which cause pesudoaneurysm should undergo CTA,MRA or DSA examination,and it is would help to get proper diagnosis and treatment as early as possible.No recurrence was found after successful endovascular techniques.
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Affiliation(s)
- Y X Du
- Department of Otolaryngology,General Hospital of Pingmei Shenma Medical Group,Pingdingshan,467000,China
| | - J Z Chen
- Department of Radiotherapy,General Hospital of Pingmei Shenma Medical Group
| | - J Wang
- Department of Otolaryngology,General Hospital of Pingmei Shenma Medical Group,Pingdingshan,467000,China
| | - B Q Chen
- Department of Otolaryngology,General Hospital of Pingmei Shenma Medical Group,Pingdingshan,467000,China
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Zheng Y, Qiu LP, Meng SL, Fan LM, Song C, Li DD, Zhang C, Chen JZ. Effect of polychlorinated biphenyls on oxidation stress in the liver of juvenile GIFT, Oreochromis niloticus. Genet Mol Res 2016; 15:gmr8613. [PMID: 27706695 DOI: 10.4238/gmr.15038613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The present study clearly showed that chronic exposure to polychlorinated biphenyls (PCBs) at environmentally relevant concentrations can damage juvenile tilapia livers by modulating antioxidant enzyme activities and gene transcription, which affects toxic bioaccumulation and histological congestion. The results suggest that PCBs caused a decrease in the activity of some hepatic antioxidative and biotransformation enzymes (SOD, CAT, GST, T-GSH, and MDA) in tilapia at 7 days, as well as transcriptional changes (sod, cat, and gst). Except for some antioxidant parameters (T-GSH, GSH/GSSG, T-AOC, and MDA), significant declines and increases occurred at 14 and 21 days, respectively. Most of the antioxidant enzymatic signatures and genotoxicity significantly increased at 14 and 21 days. This study presented evidence that PCBs could result in hepatic toxicity through oxidative stress in the early growth stages of tilapia, and we speculated that oxidative stress plays an important role in embryonic developmental toxicity induced by PCBs.
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Affiliation(s)
- Y Zheng
- Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Scientific Observing and Experimental Station of Fishery Resources and Environment in the Lower Reaches of the Changjiang River, Wuxi, China .,Wuxi Fisheries College, Nanjing Agricultural University, Wuxi, China
| | - L P Qiu
- Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Scientific Observing and Experimental Station of Fishery Resources and Environment in the Lower Reaches of the Changjiang River, Wuxi, China
| | - S L Meng
- Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Scientific Observing and Experimental Station of Fishery Resources and Environment in the Lower Reaches of the Changjiang River, Wuxi, China
| | - L M Fan
- Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Scientific Observing and Experimental Station of Fishery Resources and Environment in the Lower Reaches of the Changjiang River, Wuxi, China
| | - C Song
- Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Scientific Observing and Experimental Station of Fishery Resources and Environment in the Lower Reaches of the Changjiang River, Wuxi, China
| | - D D Li
- Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Scientific Observing and Experimental Station of Fishery Resources and Environment in the Lower Reaches of the Changjiang River, Wuxi, China
| | - C Zhang
- Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Scientific Observing and Experimental Station of Fishery Resources and Environment in the Lower Reaches of the Changjiang River, Wuxi, China
| | - J Z Chen
- Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Scientific Observing and Experimental Station of Fishery Resources and Environment in the Lower Reaches of the Changjiang River, Wuxi, China.,Wuxi Fisheries College, Nanjing Agricultural University, Wuxi, China
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16
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Zheng Y, Chen JZ, Wang HP, Li M, Liang HW, Bing XW, Wang ZZ. Large-scale tissue-specific and temporal gene expression profiles in Pengze crucian carp. Genet Mol Res 2016; 15:gmr7642. [PMID: 27051032 DOI: 10.4238/gmr.15017642] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
In the present study, the tissue-specific and temporal gene expression profiles of four catalogues of gonadal development-related genes (sex differentiation-related, steroid receptor, steroidogenic, and structural genes) were detected in nine tissues and during 11 successive developmental stages in the Pengze crucian carp (Pcc) (a triploid mono-female gynogenic fish). The results showed that these target genes exhibited overlapping distributions in various tissues, with the exception of Pcc-vasa and Pcc-cyp17a1. Gene expression profiling of the developmental stages showed that all of the target genes simultaneously reached peak expression levels at 40 and 48 days post hatching (dph). Both 40 and 48 dph appeared to be two key time points associated with the process of Pcc gonadal development. These data will provide a clear understanding of gene expression patterns associated with the gonadal development-related genes of this gynogenic teleost.
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Affiliation(s)
- Y Zheng
- Key Open Laboratory of Ecological Environment and Resources of Inland Fisheries, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences; Key Laboratory of Genetic Breeding and Aquaculture Biology of Freshwater Fishes, Scientific Observing and Experimental Station of Fishery Resources and Environment in the Lower Reaches of the Changjiang River, Ministry of Agriculture, Wuxi Fisheries College, Nanjing Agricultural University, Wuxi, China.,College of Animal Science and Technology, Northwest A&F University, Shaanxi Key Laboratory of Molecular Biology for Agriculture, Yangling, Shaanxi, China
| | - J Z Chen
- Key Open Laboratory of Ecological Environment and Resources of Inland Fisheries, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences; Key Laboratory of Genetic Breeding and Aquaculture Biology of Freshwater Fishes, Scientific Observing and Experimental Station of Fishery Resources and Environment in the Lower Reaches of the Changjiang River, Ministry of Agriculture, Wuxi Fisheries College, Nanjing Agricultural University, Wuxi, China
| | - H P Wang
- College of Animal Science and Technology, Northwest A&F University, Shaanxi Key Laboratory of Molecular Biology for Agriculture, Yangling, Shaanxi, China
| | - M Li
- College of Animal Science and Technology, Northwest A&F University, Shaanxi Key Laboratory of Molecular Biology for Agriculture, Yangling, Shaanxi, China
| | - H W Liang
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan, Hubei, China
| | - X W Bing
- Key Open Laboratory of Ecological Environment and Resources of Inland Fisheries, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences; Key Laboratory of Genetic Breeding and Aquaculture Biology of Freshwater Fishes, Scientific Observing and Experimental Station of Fishery Resources and Environment in the Lower Reaches of the Changjiang River, Ministry of Agriculture, Wuxi Fisheries College, Nanjing Agricultural University, Wuxi, China
| | - Z Z Wang
- College of Animal Science and Technology, Northwest A&F University, Shaanxi Key Laboratory of Molecular Biology for Agriculture, Yangling, Shaanxi, China
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Wang XW, Chen FP, Chen L, Chen JZ. Crystal Structure and Fluorescence Properties of a New Ternary Binuclear Complex: Sm2(C3H3O2)6(phen)2. Zeitschrift für Naturforschung B 2014. [DOI: 10.1515/znb-2007-1006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A new ternary mixed ligand dinuclear samarium(III) complex, Sm2(C3H3O2)6(phen)2 (1) (C3H3O2 = acrylate; phen = 1,10-phenathroline), has been synthesized and characterized by microanalysis, IR and UV/vis spectra and single crystal X-ray diffraction. Compound 1 crystallizes in the triclinic space group P1̅ with cell parameters: a = 9.6687(19), b = 10.690(2), c = 10.799(2) Å , α = 105.50(3), β = 106.67(3), γ = 91.59(3)°, V = 1023.8(3) Å3. The Sm(III) cations are bridged by four acrylate anions into a dinuclear molecular unit. The nine-coordinate Sm(III) atoms adopt a significantly distorted monocapped anti-square-prismatic geometry. Within the crystal structure, the complex molecules are associated via π-π stacking interactions into one-dimensional supramolecular chains along the [011] direction. Compound 1 exhibits intense fluorescence in the solid state at room temperature.
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Affiliation(s)
- Xian-Wen Wang
- Faculty of Material Science and Chemical Engineering, China University of Geoscience, Hubei, Wuhan 430074, China
| | - Fu-Ping Chen
- Faculty of Material Science and Chemical Engineering, China University of Geoscience, Hubei, Wuhan 430074, China
| | - Liang Chen
- Faculty of Material Science and Chemical Engineering, China University of Geoscience, Hubei, Wuhan 430074, China
| | - Jing-Zhong Chen
- Faculty of Material Science and Chemical Engineering, China University of Geoscience, Hubei, Wuhan 430074, China
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Chen L, Wanga XW, Chen JZ, Liu JH. Crystal Structures and Stability of Two Bipyridyl Complexes of Metal Chloroacetates. Zeitschrift für Naturforschung B 2014. [DOI: 10.1515/znb-2007-1007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The complexes Mn(Cl3CCOO)2(4,4′-bpy) (1) and [Cu2(ClCH2COO)(2,2′-bpy)2(OH)(H2O)]-(NO3)2(2) (bpy = bipyridine) were generated under mild reaction conditions and characterized by IR spectra, thermogravimetric analysis (TGA), X-ray powder diffraction (XRD), and single crystal X-ray diffraction. Compound 1 exhibits a two-dimensional network with octahedrally coordinated Mn(II) atoms linked by 4,4′-bpy ligands and Cl3COO− ligands. Compound 2 features a supramolecular structure of binuclear complexes, with edge-sharing five-coordinated square-pyramidal units bridged by the ClCH2COO− ligand, an OH− group and a water molecule. Complex 1 crystallizes in the orthorhombic space group Pbcn with cell parameters: a = 16.5390(17), b = 11.6396(17), c = 9.9181(12) Å, V = 1909.3(4) Å3, Z = 4, wR2 = 0.1576. Complex 2 crystallizes in the triclinic space group P1̅ with cell parameters: a = 7.6190(15), b = 11.151(2), c = 16.640(3) Å , α = 73.13(3), β = 80.89(3), γ = 74.51(3)°, V = 1298.73(4) Å3, Z = 2, wR2 = 0.1265.
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Affiliation(s)
- Liang Chen
- Faculty of Materials Science and Chemical Engineering, China University of Geoscience, Wuhan 430074, People’s Republic of China
| | - Xian-Wen Wanga
- Faculty of Materials Science and Chemical Engineering, China University of Geoscience, Wuhan 430074, People’s Republic of China
| | - Jing-Zhong Chen
- Faculty of Materials Science and Chemical Engineering, China University of Geoscience, Wuhan 430074, People’s Republic of China
| | - Jian-Hong Liu
- College of Chemistry and Chemical Engineering, Shenzhen University, Guangdong, Shenzhen 518060, People’s Republic of China
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Cheng QR, Li P, Zhou H, Pan ZQ, Xu ZG, Liao GY, Chen JZ. Syntheses, crystal structures, and magnetic properties of 1-D coordination polymers. J COORD CHEM 2014. [DOI: 10.1080/00958972.2014.924623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Qing-Rong Cheng
- Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan, PR China
| | - Ping Li
- Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan, PR China
| | - Hong Zhou
- Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan, PR China
| | - Zhi-Quan Pan
- Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan, PR China
| | - Zhi-Gao Xu
- Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan, PR China
| | - Gui-Ying Liao
- Engineering Research Center of Nano-Geo Materials of Ministry of Education, China University of Geosciences, Wuhan, PR China
| | - Jing-Zhong Chen
- School of Materials Science and Chemical Engineering, China University of Geosciences, Wuhan, PR China
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Pan QF, Li WT, Dong HC, Chen YZ, Yin L, Liu W, Wang WW, Liu D, Li SG, Gu WY, Chen JZ, Yang L, Zhang WJ, Li F. PTEN hypermethylation profiles of Chinese Kazakh patients with esophageal squamous cell carcinoma. Dis Esophagus 2013; 27:396-402. [PMID: 23980519 DOI: 10.1111/dote.12106] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Aberrant DNA methylation of promoter region CpG islands may serve as an alternative mechanism to genetic defects in the inactivation of tumor suppressor genes (TSGs) in human malignancies. The aim of this study was to examine the promoter methylation status of the PTEN TSG and its association with esophageal squamous cell carcinoma (ESCC) carcinogenesis in a Chinese Kazakh population, which is known to have a relatively high ESCC incidence and mortality. The methylation status of the PTEN promoter region was determined in patients with ESCC (n = 95) and healthy individuals (n = 65) using highly sensitive Sequenom Epityper assays. The methylation level of the PTEN gene was significantly higher in patients with ESCC than in healthy controls. The median methylation level was 10.0% (interquartile range [IQR]: 7.0-11.0%) in patients with ESCC and 6.0% in controls (IQR: 4.0-9.0%; P = 0.001). PTEN methylation levels were higher in male patients with ESCC than in male controls, whereas a trend toward significance was observed between female patients with ESCC and female controls (P = 0.005 and P = 0.086, respectively). The PTEN methylation level was associated with histopathological grade and lymph node metastasis in patients with ESCC (P = 0.002 and P = 0.009, respectively). To our knowledge, this is the first report to show the presence of PTEN promoter CpG hypermethylation in ESCC and its association with tumor metastasis.
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Affiliation(s)
- Q F Pan
- Department of Pathology and Key Laboratory for Xinjiang Endemic and Ethnic Diseases, Shihezi University School of Medicine, Shihezi, China
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Fakir H, Gaede S, Mulligan M, Chen JZ. Development of a novel ArcCHECK(™) insert for routine quality assurance of VMAT delivery including dose calculation with inhomogeneities. Med Phys 2012; 39:4203-8. [PMID: 22830753 DOI: 10.1118/1.4728222] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
PURPOSE To design a versatile, nonhomogeneous insert for the dose verification phantom ArcCHECK(™) (Sun Nuclear Corp., FL) and to demonstrate its usefulness for the verification of dose distributions in inhomogeneous media. As an example, we demonstrate it can be used clinically for routine quality assurance of two volumetric modulated arc therapy (VMAT) systems for lung stereotactic body radiation therapy (SBRT): SmartArc(®) (Pinnacle(3), Philips Radiation Oncology Systems, Fitchburg, WI) and RapidArc(®) (Eclipse(™), Varian Medical Systems, Palo Alto, CA). METHODS The cylindrical detector array ArcCHECK(™) has a retractable homogeneous acrylic insert. In this work, we designed and manufactured a customized heterogeneous insert with densities that simulate soft tissue, lung, bone, and air. The insert offers several possible heterogeneity configurations and multiple locations for point dose measurements. SmartArc(®) and RapidArc(®) plans for lung SBRT were generated and copied to ArcCHECK(™) for each inhomogeneity configuration. Dose delivery was done on a Varian 2100 ix linac. The evaluation of dose distributions was based on gamma analysis of the diode measurements and point doses measurements at different positions near the inhomogeneities. RESULTS The insert was successfully manufactured and tested with different measurements of VMAT plans. Dose distributions measured with the homogeneous insert showed gamma passing rates similar to our clinical results (∼99%) for both treatment-planning systems. Using nonhomogeneous inserts decreased the passing rates by up to 3.6% in the examples studied. Overall, SmartArc(®) plans showed better gamma passing rates for nonhomogeneous measurements. The discrepancy between calculated and measured point doses was increased up to 6.5% for the nonhomogeneous insert depending on the inhomogeneity configuration and measurement location. SmartArc(®) and RapidArc(®) plans had similar plan quality but RapidArc(®) plans had significantly higher monitor units (up to 70%). CONCLUSIONS A versatile, nonhomogeneous insert was developed for ArcCHECK(™) for an easy and quick evaluation of dose calculations with nonhomogeneous media and for comparison of different treatment planning systems. The device was tested for SmartArc(®) and RapidArc(®) plans for lung SBRT, showing the uncertainties of dose calculations with inhomogeneities. The new insert combines the convenience of the ArcCHECK(™) and the possibility of assessing dose distributions in inhomogeneous media.
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Affiliation(s)
- H Fakir
- Department of Physics, London Regional Cancer Program, London, Ontario N6A 4L6, Canada.
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Fakir H, Hoover D, Chen JZ. Poster - Thur Eve - 64: Evaluation of SmartArc and RapidArc for lung SBRT treatment planning and delivery. Med Phys 2012; 39:4637. [DOI: 10.1118/1.4740172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Liu XX, Li SH, Chen JZ, Sun K, Wang XJ, Wang XG, Hui RT. Effect of soy isoflavones on blood pressure: a meta-analysis of randomized controlled trials. Nutr Metab Cardiovasc Dis 2012; 22:463-70. [PMID: 21310599 DOI: 10.1016/j.numecd.2010.09.006] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.7] [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: 01/11/2010] [Revised: 08/19/2010] [Accepted: 09/17/2010] [Indexed: 01/17/2023]
Abstract
BACKGROUND AND AIM The effect of soy isoflavones on blood pressure is controversial. The objective of this study was to evaluate the effect of dietary soy isoflavones on blood pressure. METHODS AND RESULTS Trials were searched in PubMed, the Cochrane Library, Embase and references cited in related reviews and studies. A total of eleven trials were reviewed. Meta-analysis results showed a mean decrease of 2.5 mm Hg (95% CIs, - 5.35 to 0.34 mm Hg; P = 0.08) for systolic blood pressure and 1.5 mm Hg (95% CIs, - 3.09 to 0.17 mm Hg; P = 0.08) for diastolic blood pressure in the soy isoflavones-treated group compared to placebo. Meta-regression and subgroup analyses indicated that blood pressure status was a significant predictor of heterogeneity for the effect of soy isoflavones on blood pressure. Subgroup analysis of hypertensive subjects revealed that a greater blood pressure reduction was identified in the soy isoflavone-treated group compared to placebo (5 trials; SBP: - 5.94, 95% CIs [- 10.55, - 1.34] mm Hg, P = 0.01; DBP: - 3.35, 95% CIs [- 6.52, - 0.19] mm Hg, P = 0.04). In contrast, treatment with soy isoflavones did not lead to a significant reduction in blood pressure in normotensive subjects (6 trials; SBP: 0.29, 95% CIs [- 2.39, 2.97] mm Hg, P = 0.83; DBP: - 0.43, 95% CIs [- 1.66, 0.81] mm Hg, P = 0.50). CONCLUSION Soy isoflavones had an effect of lowering blood pressure in hypertensive subjects, but not in normotensive subjects. Larger trials need to be carried out to confirm the present findings.
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Affiliation(s)
- X X Liu
- The Key Laboratory of Clinical Cardiovascular Genetics, Ministry of Education and Sino-German Laboratory for Molecular Medicine, Beijing, PR China
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Chen JZ, Ye JY, Zhang HY, Jiang XJ, Zhang YX, Liu ZL. Freshwater toxic cyanobacteria induced DNA damage in apple (Malus pumila), rape (Brassica napus) and rice (Oryza sativa). J Hazard Mater 2011; 190:240-244. [PMID: 21497440 DOI: 10.1016/j.jhazmat.2011.03.030] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2010] [Revised: 02/21/2011] [Accepted: 03/10/2011] [Indexed: 05/30/2023]
Abstract
Cyanobacteria in freshwater ecosystems can present a harmful effect on growth and development of plants through irrigation with contaminated water. In this study, the effects of microcystins (MCs)-containing cyanobacteria extract (CE) on DNA damage of apple, rape and rice were investigated to explore the phytotoxic mechanism of MCs through DNA fragmentation and RAPD analysis. Determination of DNA fragmentation by fluorescent dye DAPI showed that significant DNA damage was observed in rice seedlings after exposure to CE while DNA fragmentation in rape seedlings and apple cultures did not differ significantly between treatment and control groups. Qualitative characterization of genomic DNA fragmentation by agarose gel electrophoresis supported the quantitative determination using DAPI. The main changes in RAPD profiles of rape seedlings following exposure of lower doses of CE were variation in band intensity for the primers F03 and S01, while higher doses of CE caused loss of normal bands and appearance of new bands except band intensity changes. The data presented here demonstrate that DNA damage in plants occurs following exposure of microcystins, and the polymorphic RAPDs may be used as an investigation tool for environmental toxicology and as a useful biomarker for the detection of genotoxic effects of microcystins on plants.
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Affiliation(s)
- J Z Chen
- School of Life Science, Huzhou University, Huzhou 313000, PR China.
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Cheng QR, Zhou H, Pan ZQ, Chen JZ. New Cu(II)4 and Zn(II)4 complexes: Synthesis, characterization and magnetic and biological studies. Polyhedron 2011. [DOI: 10.1016/j.poly.2011.01.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Xu T, Chen JZ, Han W, Li Z, Yu G. Geopolymer-Organic Polymer Composite Synthesized by the Interactions of H3PO4with Metakaolinite Powders and Polyvinyl Alcohol. Particulate Science and Technology 2010. [DOI: 10.1080/02726351003758436] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Abstract
INTRODUCTION The diagnosis of long segment Hirschsprung's disease (LSHD) is frequently delayed. Our purpose was to: 1) summarize contrast enema (CE) findings in patients with LSHD, and 2) evaluate the utility of CE by comparing LSHD patients managed with/without pre-biopsy CE. METHODS All LSHD cases (transition zone [TZ] proximal to the splenic flexure) treated between 1984 and 2009 were stratified according to whether a pre-biopsy CE was done (Group 1) or not (Group 2). CE were reviewed by a single pediatric radiologist, and the original reports were categorized as "helpful", "inconclusive" or "misleading". Group comparisons included elapsed days from admission to diagnostic rectal biopsy/first operation and initial hospitalization length of stay (LOS). RESULTS 29 patients (16 in Group 1; 13 in Group 2) were identified. CE review revealed TZ in 7/16 (44%); and of these, 6 (86%) underestimated the actual aganglionic segment length. 6/16 (38%) original CE reports were "misleading". Overall, Group 1 patients experienced a significant delay in time to biopsy (p=0.047), first operation (p=0.005), and showed a trend towards prolonged LOS. CONCLUSIONS Pre-biopsy CE offers little to the diagnosis of LSHD and may contribute to diagnosis/treatment delays. Even if a TZ is recognized in biopsy proven HD, the predicted aganglionic segment length should not guide the operative planning.
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Affiliation(s)
- J Z Chen
- BC Children's Hospital, Pediatric General Surgery, Vancouver, Canada
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Ferenczi K, Ohtola J, Aubert P, Kessler M, Sugiyama H, Somani AK, Gilliam AC, Chen JZ, Yeh I, Matsuyama S, McCormick TS, Cooper KD. Malignant T cells in cutaneous T-cell lymphoma lesions contain decreased levels of the antiapoptotic protein Ku70. Br J Dermatol 2010; 163:564-71. [PMID: 20408834 DOI: 10.1111/j.1365-2133.2010.09812.x] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Malignant T cells in primary cutaneous T-cell lymphoma (CTCL) are genetically unstable and exhibit prolonged lifespans potentially explained by dysregulation of apoptosis, yet are responsive to apoptosis-inducing therapies. The heterodimeric protein Ku70/80 is known to play a role in DNA repair (Ku70 and Ku80) and inhibition of apoptosis (Ku70 only). OBJECTIVES To investigate the expression of Ku70/80 in CD3+ T cells derived from skin and blood in patients with CTCL and normal samples, as well as benign dermatoses. METHODS Normal (n=10), CTCL (n=9) and benign dermatoses (n=13) skin samples were stained for confocal imaging of Ku70/80 and CD3 and analysed using imaging software. Circulating CD4+ T cells in normal and CTCL peripheral blood were analysed by flow cytometry and Western blot for Ku70/80 expression (n=6). RESULTS Ku70 and Ku80 were significantly diminished in T cells of CTCL lesions relative to T cells of control skin. Decreased T-cell Ku70 expression was not a feature of the benign dermatoses psoriasis and contact dermatitis, suggesting that loss of Ku70/80 in CTCL is not simply the result of cutaneous inflammation. Reduced Ku70 was also noted in circulating CD4+ T cells in patients with CTCL with peripheral blood involvement. CONCLUSIONS Deficient expression or lack of Ku70/80 may result in genomic instability and play a role in tumorigenesis, as well as account for the increased susceptibility of malignant T cells to apoptosis-inducing treatment modalities in the setting of intrinsic resistance to apoptosis.
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Affiliation(s)
- K Ferenczi
- Department of Dermatology, University Hospitals Case Medical Center, Case Western Reserve University, Cleveland, OH 44106, USA
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Tu BT, Ren YT, Ju L, Chen JY, Chen Y, Chen JZ. Crystal structure of bis[(μ2-hydroxo)-aqua-(1,10-phenanthroline- N,N')copper(II)] phenylacetate hexahydrate, [Cu(C12H8N2)(OH)(H2O)]2[C8H7O2]2 · 6H2O. Z KRIST-NEW CRYST ST 2009. [DOI: 10.1524/ncrs.2009.0321] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Chen JZ, Lukas B, Dar AR, Bzdusek K, Karnas S, Yartsev S. Sci-Thurs PM: Planning-01: Evaluation of Real-Time Dose-Adaptation Process for Intensity-Modulated Radiation Therapy. Med Phys 2009. [DOI: 10.1118/1.3244172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Wang XX, Zhang FR, Zhu JH, Xie XD, Chen JZ. Up-Regulation of CXC Chemokine Receptor 4 Expression in Chronic Atrial Fibrillation Patients with Mitral Valve Disease May Be Attenuated by Renin–Angiotensin System Blockers. J Int Med Res 2009; 37:1145-51. [PMID: 19761697 DOI: 10.1177/147323000903700419] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
This study characterized CXC chemokine receptor 4 (CXCR4) expression in patients with mitral valve disease and chronic atrial fibrillation (AF). Forty-eight patients with chronic AF formed two groups based on whether they were treated with or without renin–angiotensin system (RAS) blockers (AF + RAS group; n = 25, or AF – RAS group; n = 23). The controls comprised 17 mitral valve disease patients with sinus rhythm (SR group). CXCR4 mRNA and protein levels in the left atria were significantly higher in the AF – RAS and AF + RAS groups than in the SR group. CXCR4 expression was significantly lower in the AF + RAS group than the AF – RAS group. More CD34+ cells expressed CXCR4 in the AF – RAS and AF + RAS groups than in the SR group. Angiotensin II, collagen I and left atrial diameter significantly positively correlated with CXCR4 expression in the AF – RAS group. These results suggest that CXCR4 expression is up-regulated in chronic AF patients with mitral valve disease, is associated with atrial remodelling, and that these effects are attenuated by RAS blockers.
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Affiliation(s)
- XX Wang
- Department of Cardiology, The First Affiliated Hospital, Medical School of Zhejiang University, Hangzhou, China
| | - FR Zhang
- Department of Cardiology, The First Affiliated Hospital, Medical School of Zhejiang University, Hangzhou, China
| | - JH Zhu
- Department of Cardiology, The First Affiliated Hospital, Medical School of Zhejiang University, Hangzhou, China
| | - XD Xie
- Department of Cardiology, The First Affiliated Hospital, Medical School of Zhejiang University, Hangzhou, China
| | - JZ Chen
- Department of Cardiology, The First Affiliated Hospital, Medical School of Zhejiang University, Hangzhou, China
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Gong SN, Zhi YX, Hu J, Wu XL, Chen JZ. Crystal structure of bis(aquasamarium) trisuccinate, Sm2(H2O)2(C4H4O4)3. Z KRIST-NEW CRYST ST 2009. [DOI: 10.1524/ncrs.2009.0135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Du SC, Liu ZF, Hu J, Chen JZ. Crystal structure of monoaqua-(2,2′-bipyridyl-N,N′)-(adipato-O)- copper(II) dihydrate, [Cu(H2O)(C10H8N2)(C6H8O4)] · 2H2O. Z KRIST-NEW CRYST ST 2009. [DOI: 10.1524/ncrs.2009.0145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Qie YQ, Wang JL, Liu W, Shen H, Chen JZ, Zhu BD, Xu Y, Zhang XL, Wang HH. More vaccine efficacy studies on the recombinant Bacille Calmette-Guerin co-expressing Ag85B, Mpt64 and Mtb8.4. Scand J Immunol 2009; 69:342-50. [PMID: 19284499 DOI: 10.1111/j.1365-3083.2009.02231.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The immunogenicity of the recombinant Bacille Calmette-Guerin: rBCG-Ag85B-Mpt64(190-198)-Mtb8.4 (rBCG-AMM) was evaluated in our previous study. This paper compares the protective efficacy of rBCG-AMM, rBCG-A which overexpresses Ag85B and BCG in C57BL/6 mice. There was no significant difference in proliferation characteristics among rBCG-AMM, rBCG-A and BCG. The growth characteristics of rBCG-AMM in host tissue were identical to control BCG, suggesting the improved protective efficacy was directly related to the expression of the Ag85B-Mpt64(190-198)-Mtb8.4 fusion protein. The protective experiment demonstrated that rBCG-AMM could confer similar or even better protective efficacy against Mycobacterium tuberculosis infection compared with BCG or rBCG-A as evaluated by bacterial organ loads, lung histopathology and net weight gain or loss. The results suggested that the recombinant BCG: rBCG-Ag85B-Mpt64(190-198)-Mtb8.4 is a potential vaccine candidate for further study.
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Affiliation(s)
- Y Q Qie
- State Key Laboratory of Genetic Engineering, Institute of Genetics, School of Life Science, Fudan University, Shanghai, China
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Tu BT, Ren YT, Ju L, Chen JY, Chen Y, Chen JZ. Crystal structure of bis[(μ2-hydroxo)-aqua-(1,10-phenanthroline-N,N')copper(II)] phenylacetate hexahydrate, [Cu(C12H8N2)(OH)(H2O)]2[C8H7O2]2 · 6H2O. Z KRIST-NEW CRYST ST 2009. [DOI: 10.1524/ncrs.2009.224.14.761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Du SC, Liu ZF, Hu J, Chen JZ. Crystal structure of monoaqua-(2,2'-bipyridyl-N ,N')-(adipato-0)- copper(II) dihydrate, [Cu(H2O)(C10H8N2)(C6H8O4)] · 2H2O. Z KRIST-NEW CRYST ST 2009. [DOI: 10.1524/ncrs.2009.224.14.335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Gong SN, Zhi YX, Hu J, Wu XL, Chen JZ. Crystal structure of bis(aquasamarium) trisuccinate, Sm2(H2O)2(C4H4O4)3. Z KRIST-NEW CRYST ST 2009. [DOI: 10.1524/ncrs.2009.224.14.315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Xu ZX, Chen JZ, Yue YB, Zhang JQ, Li ZH, Feng DM, Ruan ZC, Tian L, Xue JL, Wang QJ, Jia W. A 16-bp RBE element mediated Rep-dependent site-specific integration in AAVS1 transgenic mice for expression of hFIX. Gene Ther 2009; 16:589-95. [DOI: 10.1038/gt.2009.9] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Chen QL, Qi LJ, Chen JZ. [Raman spectrum study on turquoise]. Guang Pu Xue Yu Guang Pu Fen Xi 2009; 29:406-409. [PMID: 19445215] [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: 05/27/2023]
Abstract
The Raman spectrum has been employed to discuss the explanation of the structure of water and the vibration of [PO4(3-)] tetrahedron of the turquoise from Hubei and Anhui province. The Raman spectra are resulted mainly from vibrations of water, hydroxyl units and [PO4(3-)] tetrahedron of turquoise. The 3 510-3 440 cm(-1) bands with the main Raman spectra peak at 3 470 cm(-1) were assigned to the upsilon(OH) stretching vibrations and the 3 290-3 070 cm(-1) bands assigned to the upsilon(H2O) stretching vibrations. The bands observed at 1 200-1 030 cm(-1) with the strong peak at 1 039 cm(-1) were assigned to upsilon3 (PO4) antisymmetric stretching vibrations. And the Raman spectra peaks at 650-540 cm(-1) and 500-410 cm(-1) were attributed to the upsilon4 and upsilon2 bending vibrations of [PO4(3-)] tetrahedron, respectively. The spectra of the turquoise from different localities are basically similar and subtly different.
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Affiliation(s)
- Quan-Li Chen
- Gemology Institute, China University of Geosciences, Wuhan 430074, China.
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Zhi YX, Hu J, Chen JY, Chen JZ. Crystal structure of (±)-2-imidazoi-1-ylsuccinic acid, C7H8N2O4. Z KRIST-NEW CRYST ST 2009. [DOI: 10.1524/ncrs.2009.224.14.509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Li ZF, Cheng Q, Chen JZ, Chen Y. Crystal structure of diaqua-bis(μ4-terephthalato-μ2-oxalato)- didysprosium(III),Dy2(C8H4O4)2(C2O4)(H2O)2. Z KRIST-NEW CRYST ST 2009. [DOI: 10.1524/ncrs.2009.224.14.503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Hu B, Chen JZ, Chen H, Li ZF. Crystal structure of tri(2-methylimidazolium) phosphatopolyoxododecamolybdate, [C4H7N2]3 · PMo12O40. Z KRIST-NEW CRYST ST 2008. [DOI: 10.1524/ncrs.2008.0189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Hu B, Chen JZ, Chen H, Li ZF. Crystal structure of catena-bis(imidazole)bis($2-succinato)copper(II), Cu(C3N2H4)2(C4H5O4)2. Z KRIST-NEW CRYST ST 2008. [DOI: 10.1524/ncrs.2008.0191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Tu BT, Xie HZ, Ren YT, Chen JZ. Bis(1,10-phenanthroline-κN,N')(phenyl-acetato-κO)copper(II) phenyl-acetate hexa-hydrate. Acta Crystallogr Sect E Struct Rep Online 2008; 64:m1475. [PMID: 21580909 PMCID: PMC2959544 DOI: 10.1107/s1600536808032480] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2008] [Accepted: 10/08/2008] [Indexed: 11/10/2022]
Abstract
In the title compound, [Cu(C(8)H(7)O(2))(C(12)H(8)N(2))(2)](C(8)H(7)O(2))·6H(2)O, the Cu atom is in a distorted square-pyramidal coordination environment. The six crystallographically independent uncoordinated water mol-ecules are inter-connected by hydrogen bonds, completing dodeca-water (H(2)O)(12) clusters which are hydrogen bonded to the carboxyl-ate groups of phenyl-acetate anions, building up one-dimensional anionic chains propagating along [100]. Between the cationic and anionic chains are hydrogen bonds from water mol-ecules to the carboxyl-ate O atoms belonging to the phenyl-acetato ligands.
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Xia L, Wang XX, Hu XS, Guo XG, Shang YP, Chen HJ, Zeng CL, Zhang FR, Chen JZ. Resveratrol reduces endothelial progenitor cells senescence through augmentation of telomerase activity by Akt-dependent mechanisms. Br J Pharmacol 2008; 155:387-94. [PMID: 18587418 DOI: 10.1038/bjp.2008.272] [Citation(s) in RCA: 90] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND AND PURPOSE Recent studies have shown that resveratrol increased endothelial progenitor cells (EPCs) numbers and functional activity. However, the mechanisms remain to be determined. Previous studies have demonstrated that increased EPC numbers and activity were associated with the inhibition of EPC senescence, which involves activation of telomerase. Therefore, we investigated whether resveratrol inhibits the onset of EPC senescence through telomerase activation, leading to potentiation of cellular activity. EXPERIMENTAL APPROACH After prolonged in vitro cultivation, EPCs were incubated with or without resveratrol. The senescence of EPCs were determined by acidic beta-galactosidase staining. The bromo-deoxyuridine incorporation assay or a modified Boyden chamber assay were employed to assess proliferative or migratory capacity, respectively. To further examine the underlying mechanisms of these effects, we measured telomerase activity and the phosphorylation of Akt by western blotting. KEY RESULTS Resveratrol dose dependently prevented the onset of EPCs senescence and increased the proliferation and migration of EPCs. The effect of resveratrol on senescence could not be abolished by eNOS inhibitor or by an oestrogenic receptor antagonist. Resveratrol significantly increased telomerase activity and Akt phosphorylation. Pre-treatment with the PI3K inhibitor, LY294002, significantly attenuated resveratrol-induced telomerase activity. CONCLUSIONS AND IMPLICATIONS Resveratrol delayed the onset of EPC senescence and this effect was accompanied by activation of telomerase through the PI3K-Akt signalling pathway. The inhibition of EPCs senescence by resveratrol might protect EPCs against dysfunction induced by pathological factors in vivo and improve EPC functional activities in a way that may be important for cell therapy.
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Affiliation(s)
- L Xia
- Department of Cardiovascular Diseases, the First Affiliated Hospital, Medical School of Zhejiang University, Hangzhou, PR China
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Chen Y, Du SC, Liu ZF, Hong HL, Chen JZ. Crystal structure of aqua-hydroxo-hippurato-bis(2,2′-bipyridine)-dicopper(II) dinitrate tetrahydrate, [Cu2(OH)(C9H8NO3)(H2O)(C10H8N2)2][NO3]2 · 4H2O. Z KRIST-NEW CRYST ST 2008. [DOI: 10.1524/ncrs.2008.0040] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Wang XW, Chen Y, Chen JZ, Liu JH, Han L. Structure and Stability of a Linear Trinuclear Cobalt(II) Complex: Co 3(PhCH=CHCO 2) 6(bpy) 2. Zeitschrift für Naturforschung B 2008. [DOI: 10.1515/znb-2008-0203] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A trinuclear cobalt(II) complex, [Co3(PhCH=CHCO2)6(bpy)2] (1) (bpy = 2,2-bipyridine), was synthesized and structurally characterized by single crystal X-ray diffraction. Complex 1 crystallizes in the triclinic space group P1 with cell parameters: a = 11.347(6), b = 11.471(6), c = 14.247(8) Å , α = 69.503(9), β = 74.211(9), γ = 76.812(11)°, V = 1653.2(15) Å3, Z = 1, and R1(F) = 0.026, wR2(F2) = 0.138. Complex 1 has a linear arrangement of three Co(II) centers bridged by six cinnamate carboxylate groups, four of which function in a bidentate syn-syn fashion linking the peripheral Co2 atoms, and two as both bidentate bridging and bidentate chelating units. The Co1 atom is located on a crystallographic inversion center and exhibits a slightly distorted octahedral coordination geometry, while the terminal Co atoms (Co2 and Co2#1) have a significantly distorted octahedral environment. Hydrogen bonding interactions and π-π stacking interactions stabilize the structure
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Affiliation(s)
- Xian-Wen Wang
- Faculty of Material Science and Chemical Engineering, China University of Geoscience, Hubei, Wuhan 430074, China
| | - Ying Chen
- Faculty of Material Science and Chemical Engineering, China University of Geoscience, Hubei, Wuhan 430074, China
| | - Jing-Zhong Chen
- Faculty of Material Science and Chemical Engineering, China University of Geoscience, Hubei, Wuhan 430074, China
| | - Jian-Hong Liu
- College of Chemistry and Chemical Engineering, Shenzhen University, Guangdong, Shenzhen 518060, China
| | - Lei Han
- Faculty of Material Science and Chemical Engineering, Ningbo University, Zhejiang, Ningbo 315211, China
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Chen Y, Wang XW, Hu B, Chen FP, Chen JZ, Chen L. Synthesis, characterization and crystal structure of a new linear trinuclear manganese(II) complex, [Mn3(PhCH=CHCO2)6(BPY)2] · H2O (BPY=2,2-bipyridine). J COORD CHEM 2007. [DOI: 10.1080/00958970701271831] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Ying Chen
- a Faculty of Material Science and Chemical Engineering , China University of Geoscience , Wuhan, 430074, P.R. China
| | - Xian-Wen Wang
- a Faculty of Material Science and Chemical Engineering , China University of Geoscience , Wuhan, 430074, P.R. China
- b Faculty of Materials Science and Chemical Engineering, The State Key Laboratory Base of Novel Functional Materials and Preparation Science , Ningbo University , Ningbo, 315211 P.R. China
| | - Bo Hu
- a Faculty of Material Science and Chemical Engineering , China University of Geoscience , Wuhan, 430074, P.R. China
| | - Fu-Ping Chen
- a Faculty of Material Science and Chemical Engineering , China University of Geoscience , Wuhan, 430074, P.R. China
| | - Jing-Zhong Chen
- a Faculty of Material Science and Chemical Engineering , China University of Geoscience , Wuhan, 430074, P.R. China
| | - Liang Chen
- a Faculty of Material Science and Chemical Engineering , China University of Geoscience , Wuhan, 430074, P.R. China
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