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Hu ST, Xia Q, Zeng XL, Bao HR, Liu XJ. [Effects of PI3Kδ-RhoA pathway on phagocytosis defect of alveolar macrophages in a mouse model of chronic obstructive pulmonary disease]. Zhonghua Jie He He Hu Xi Za Zhi 2017; 40:520-526. [PMID: 28728277 DOI: 10.3760/cma.j.issn.1001-0939.2017.07.009] [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] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate effects of Phosphoinositide3-Kinases (PI3Kδ)-Ras homolog gene family member A(RhoA) pathway on phagocytosis deficiency of alveolar macrophages (AMs) in a mouse model of chronic obstructive pulmonary disease (COPD). Methods: Twenty mice were exposed to cigarette smoking to establish the COPD model, with 20 mice as the control group. AMs were isolated from lung tissue by discontinuous density gradient centrifugation and then divided into a healthy control group, a COPD group, a healthy IC87114 group and a COPD IC87114 group. The culture of IC87114 group was mixed with a final concentration of 1 nmol/L IC87114 for 24 hours. Mean fluorescence intensity (MFI) and the positive percent of AMs engulfing flurescein isothiocyanate-labeled Escherichina coli (FITC-E.coli) (AM%) were detected by flow cytometry. Real-Time PCR(RT-PCR)and Western blot were applied to detect mRNA and protein. G-LISA RhoA Kit was used to detect the activity of RhoA, and laser scanning confocal microscopy was used to observe the cytoskeleton structure of AMs. Results: Phagocytosis of AM: MFI and AM %in the COPD group [(4 512±517), (32.2±4.6)%] were decreased than those in the healthy control group [(9 857±1 042), (68.0±4.0)%, all P<0.01]. Compared with the COPD group, MFI and AM% in the COPD IC87114 group [(6 894±472), (50.6±2.1)%] were increased (all P<0.01). The expressions of mRNA and protein of PI3Kδ in the COPD group (3.14±0.54, 0.84±0.08) were increased than those in the healthy control group (1.00±0.00, 0.57±0.07) (all P<0.01). Compared with the COPD group, the expressions of mRNA and protein of PI3Kδ in the COPD IC87114 group (1.52±0.28, 0.66±0.13) were decreased (all P<0.01). The RhoA mRNA, protein and activity in the COPD group (0.70±0.07, 0.41±0.10, 0.70±0.06) were decreased compared to those in the healthy control group (1.00±0.00, 0.56±0.09, 1.19±0.09) (all P<0.01). Compared with the COPD group, the expression of mRNA, protein and activity of RhoA in the COPD IC87114 group(0.91±0.08, 0.48±0.06, 0.86±0.06) were increased (P<0.01, P<0.05). Cytoskeleton of AM: The pseudopods of the healthy control group and the healthy IC87114 group extended well, and the ability of phagocytosing FITC-E.coli was intact, but there were some defects in the COPD group. Compared with the COPD group, the COPD IC87114 group was better, both in phagocytosing and extending of pseudopods. Negative correlations existed between the mRNA, protein of PI3Kδ with mRNA, protein and activity of RhoA. Negative correlations also existed between the mRNA, protein of PI3Kδ with MFI, but positive correlations between RhoA and MFI were observed in all groups. Conclusion: The phagocytosis of AMs in COPD mice was defective, with abnormal rearrangement of the cytoskeleton. PI3Kδ negatively regulated RhoA, while PI3Kδ over activation resulted in decreasing activity of RhoA and then induced abnormal cytoskeleton rearrangement in AMs, which led to phagocytosis deficiency.IC87114 inhibited PI3Kδ activation, improved the activity of RhoA and partly recovered phagocytosis of AMs.
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Affiliation(s)
- S T Hu
- Department of Gerontal Respiratory Medicine, the Frist Hospital of Lanzhou University, Lanzhou 730000, China
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Xia Q, Hu ST, Zeng XL, Bao HR, Liu XJ. [Mechanisms of cytoskeleton and PI3Kδ-RhoA in fine particulate matter deteriorating phagocytosis defect of alveolar macrophage in mice with chronic obstructive pulmonary disease]. Zhonghua Yi Xue Za Zhi 2017. [PMID: 28648016 DOI: 10.3760/cma.j.issn.0376-2491.2017.24.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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 explore the mechanism of cytoskeleton and PI3Kδ-RhoA in fine particulate matter deteriorating phagocytosis defect of alveolar macrophage (AM) in chronic obstructive pulmonary disease (COPD) mice. Methods: Forty mice were randomly divided into four groups: health control group, COPD group, health PM2.5 group, COPD PM2.5 group and with ten in each group. A mouse model of COPD was established by cigarette smoke exposure, and health PM2.5 group and COPD PM2.5 group mice were given PM2.5 (588 μg/m(3)) aerosol inhalation for 90 days. AM were isolated from lung tissue by discontinuous density gradient centrifugation. Mean fluorescence intensity (MFI) and the percent of alveolar macrophage engulfing flurescein isothiocyanate-labeled Escherichia coli (FITC-E.coli) AM (AM%) were detected by flow cytometry. The mRNA and protein expression were measured by real time polymerase chain reaction (RT-PCR) and Western blot. The activity of RhoA was measured by GTPase linked immunosorbent assay (G-LISA) Kit. Cytoskeleton was observed by laser scanning confocal microscopy. Results: The MFI and the AM% in COPD group [4 512±517, (32.19±4.57)%] and health PM2.5 group [7 631±585, (50.78±4.58)%] were significantly lower than those in health control group [9 857±1 042, (68.53±2.88)%], while those in COPD PM2.5 group [3 121±393, (21.90±2.58)%] were lower than those in COPD group (all P<0.01). The mRNA and protein of PI3Kδ in COPD group (3.41±0.54, 0.84±0.08)and health PM2.5 group (1.52±0.35, 0.71±0.11) were higher than those in health control group (1.00±0.00, 0.57±0.07) (all P<0.05), and in COPD PM2.5 group (5.53±0.42, 1.17±0.25), the above parameters were remarkably increased as compared to those in COPD group (all P<0.01). The mRNA, protein and activity of RhoA in COPD group (0.70±0.07, 0.41±0.10, 0.70±0.06) and health PM2.5 group (0.84±0.06, 0.46±0.11, 0.87±0.07) were lower than those in health control group (1.00±0.00, 0.56±0.09, 1.19±0.09) (all P<0.05), and above parameters of COPD PM2.5 group (0.42±0.05, 0.31±0.06, 0.44±0.04) were significantly lower than COPD group (all P<0.01). Cytoskeleton of AM: long and dense filopodia and membrane fold could been seen clearly around the AM of health control group; in COPD group and health PM2.5 group, short and sparse filopodia and slightly deformed AM can been seen. Filopodia remarkably decreased and rigid cells with impaired capacity of engulfing FITC-E.coli can be generally observed in COPD PM2.5 group. Negative correlations were existed between PI3Kδ mRNA, protein and RhoA mRNA, protein, activity in all groups (all P<0.01). Negative correlations were existed between PI3Kδ mRNA, protein and MFI, and positive correlations were existed between RhoA mRNA, protein, activity and MFI in all groups (all P<0.05). Conclusion: Fine particulate matter (PM2.5) can deteriorate the phagocytosis of AM from COPD mice through over activating PI3Kδ and inhibiting the activity of RhoA then causing cytoskeleton abnormal rearrangement.
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Affiliation(s)
- Q Xia
- Department of Gerontal Respiratory Medicine, the Frist Hospital of Lanzhou University, Lanzhou 730000, China
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Shen Y, Lu X, Ma X, He J, Zhang D, Zhan H, Xia Q. Oxidative desulfurization of thiophene derivatives with H2O2 in the presence of catalysts based on MoO3/Al2O3 under mild conditions. Kinet Catal 2017. [DOI: 10.1134/s0023158417010086] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Li SJ, Yan SY, Zhou Y, Han KLEE, Guo WL, Xia Q, Vibhuti SP, Wang JZ, Ji SW, Yang SHAH, Yang SN, Shan C, Liu CY, Yi ZZ, Liu RB, Lin L, Wang B, He JQ, Li ZL, Pan Y, Guo L, Chen MX, Liu XN, Zhou Y, Li L, Xiong CQ, Qi Q, Hei XY, Cao J, Jiang YJ, Zhang MY, Shoo Y. [Ventilator-associated pneumonia among premature infants <34 weeks' gestational age in neonatal intensive care unit in China: a multicenter study]. Zhonghua Er Ke Za Zhi 2017; 55:182-187. [PMID: 28273700 DOI: 10.3760/cma.j.issn.0578-1310.2017.03.004] [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] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the incidence and pathogen distribution of ventilator-associated pneumonia (VAP) among preterm infants admitted to level Ⅲ neonatal intensive care units (NICU) in China. Method: A prospective study was conducted in 25 level Ⅲ NICU, enrolling all preterm infants <34 weeks gestational age admitted to the participating NICU within the first 7 days of life from May 2015 to April 2016. Chi-square test, t test and Mann-Whitney U test were used for statistical analysis. Result: A total of 7 918 patients were enrolled, within whom 4 623(58.4%) were males. The birth weight was (1 639±415) g and the gestational age was (31.4±2.0) weeks; 4 654(58.8%) infants required non-invasive mechanical ventilation and 2 154(27.2%) required intubation. Of all the mechanically ventilated patients, VAP occurred in 95 patients. The overall VAP rate was 7.0 episodes per 1 000 ventilator days, varying from 0 to 34.4 episodes per 1 000 ventilator days in different centers. The incidence of VAP was 9.6 and 6.0 per 1 000 ventilator days in children's hospitals and maternity-infant hospitals respectively, without significant differences (t=1.002, P=0.327). Gram-negative bacilli (76 strains, 91.6%) were the primary VAP microorganisms, mainly Acinetobacter baumannii (24 strains, 28.9%), Klebsiella pneumonia (23 strains, 27.7%), and Pseudomonas aeruginosa (10 strains, 12.0%). Conclusion: The incidence of VAP in China is similar to that in developed counties, with substantial variability in different NICU settings. More efforts are needed to monitor and evaluate the preventable factors associated with VAP and conduct interventions that could effectively reduce the occurrence of VAP.
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Affiliation(s)
- S J Li
- *Department of Neonatology, Children's Hospital of Fudan University, Shanghai 201102, China
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Deng ZH, Jiang LR, Zhang B, Xu YZ, Shen CH, Zhou T, Xia Q, Zhang TA. [Primary hypogammaglobulinemia complicated with liver cirrhosis and literature review]. Zhonghua Er Ke Za Zhi 2017; 54:379-82. [PMID: 27143082 DOI: 10.3760/cma.j.issn.0578-1310.2016.05.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To explore the pathogenesis, treatment and prognosis of primary hypogammaglobulinemia complicated with liver cirrhosis in a child. METHOD Pathogenesis, treatment and prognosis of X-linked agammaglobulinemia (XLA ) complicated with liver cirrhosis in a child were analyzed in Shanghai Children's Medical Center.Using"primary hypogammaglobulinemia"and"liver cirrhosis"as keywords, literatures were searched from Pubmed and Chinese data of Weipu and Wanfang data from January 1988 to January 2015. RESULT The patient was a 12 years old boy with the chief complaint of 3 times hematemesis with diagnosis of XLA in the past 7 years. He received treatment with immunoglobulin (Ig) monthly for 6 years. He had no hepatitis C virus( HCV ) infection and serologic tests for autoantibodies were negative. Anti-HBs, anti-HBe and anti-HBc were positive, which revealed previous hepatitis B virus(HBV) infection. Gastroscopy suggested esophageal gastric varices. Liver pathology showed liver cell degeneration, necrosis, fiber tissue hyperplasia and pseudolobuli. After hospitalization the boy underwent liver transplantation (LT). He was given tacrolimus (3 mg/d), prednisone (5 mg/d), lamivudine (150 mg/d) and acyclovir (900 mg/d) by oral administration after LT. After 3 months follow-up, the boy was alive and well with stable results of liver function tests. There were no report in Weipu and Wanfang data. A total of 19 cases, including 12 cases of common variable immunodeficiency, 3 cases of XLA, 2 cases of Hyper-IgM syndrome and 2 cases of congenital hypogammaglobulinemia were obtained from Pubmed published between January 1, 1988 and January 1, 2015. Seventeen of the cases had HCV infection. Two cases had autoimmune hepatitis. Of the HCV infected patients, 15 were given intravenous gamma globulin. Seven of the 19 cases survived. Among 5 cases who received liver transplantation, 3 cases died. CONCLUSION In addition to HCV infection and autoimmune hepatitis as causes of liver cirrhosis in primary hypogammaglobulinemia, chronic HBV infection is another cause. Intravenous gammaglobulin is an important way of transmitting HCV and HBV infection. The effect of liver transplantation remains to be evaluated via further follow-up and studies.
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Affiliation(s)
- Z H Deng
- Department of Gastroenterology, Shanghai Children's Medical Center, Shanghai Jiao Tong University Medical College, Shanghai 200127, China
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Si L, Xu H, Zhou X, Zhang Z, Tian Z, Wang Y, Wu Y, Zhang B, Niu Z, Zhang C, Fu G, Xiao S, Xia Q, Zhang L, Zhou D. Generation of influenza A viruses as live but replication-incompetent virus vaccines. Science 2016; 354:1170-1173. [DOI: 10.1126/science.aah5869] [Citation(s) in RCA: 108] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Accepted: 11/08/2016] [Indexed: 01/16/2023]
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Ran D, Li WJ, Sun QG, Li JQ, Xia Q. [Comparision of Different Methods of Area Measurement in Irregular Scar]. Fa Yi Xue Za Zhi 2016; 32:338-341. [PMID: 29205001 DOI: 10.3969/j.issn.1004-5619.2016.05.005] [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: 08/06/2015] [Indexed: 11/18/2022]
Abstract
OBJECTIVES To determine a measurement standard of irregular scar area by comparing the advantages and disadvantages of different measurement methods in measuring same irregular scar area. METHODS Irregular scar area was scanned by digital scanning and measured by coordinate reading method, AutoCAD pixel method, Photoshop lasso pixel method, Photoshop magic bar filled pixel method and Foxit PDF reading software, and some aspects of these methods such as measurement time, repeatability, whether could be recorded and whether could be traced were compared and analyzed. RESULTS There was no significant difference in the scar areas by the measurement methods above. However, there was statistical difference in the measurement time and repeatability by one or multi performers and only Foxit PDF reading software could be traced back. CONCLUSIONS The methods above can be used for measuring scar area, but each one has its advantages and disadvantages. It is necessary to develop new measurement software for forensic identification.
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Affiliation(s)
- D Ran
- Shanghai Key Laboratory of Forensic Medicine, Institute of Forensic Science, Ministry of Justice, P.R.China, Shanghai 200063, China
| | - W J Li
- Forensic Judicial Appraisal Center of Fengtai District Public Security Bureau,Beijing 100071, China
| | - Q G Sun
- Forensic Judicial Appraisal Center of Fengtai District Public Security Bureau,Beijing 100071, China
| | - J Q Li
- Hangzhou Minghao Forensic Judicial Appraisal Institute, Hangzhou 310014, China
| | - Q Xia
- Shanghai Key Laboratory of Forensic Medicine, Institute of Forensic Science, Ministry of Justice, P.R.China, Shanghai 200063, China
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Luo Y, Zhang M, Zhou T, Zhang JJ, Xia Q. [Application of three-dimensional visualization technique in pediatric living donor liver transplantation]. Zhonghua Wai Ke Za Zhi 2016; 54:700-3. [PMID: 27587214 DOI: 10.3760/cma.j.issn.0529-5815.2016.09.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To investigate the value of three-dimensional(3D) visualization technology for donor evaluation in pediatric living donor liver transplantation(LDLT). METHODS The clinical data of 348 familial donors who underwent LDLT from January 2013 to December 2015 in Renji Hospital, Shanghai Jiaotong University School of Medicine were reviewed retrospectively.3D visualize-vascular type and liver grafts volume were analyzed and compared to the actual volume and anatomy. Paired t-test was used to compared the liver volume between 3D visualization estimated-liver grafts and actual volume. RESULTS Among the LDLT recipients, 168 were male and 180 were female aged from 5 to 176 months(median age 8 months), and average body weight was(9.4±5.4)kg, average abdominal circumference was (56.3±13.3)cm.Among the LDLT candidates, 131 were male and 217 were female aged from 19 to 59 years(average age (32.0±13.0)years, median age 30 years). The type of liver grafts from 348 donors included: 308 left lateral lobe(88.5%)(5 were reduced-size grafts(1.4%) and 2 were hyper reduced-size grafts (0.6%)), 32 left lobe donor(9.2%), 7 right lobe donor(2.0%) and 1 right posterior lobe donor(0.3%). The difference between the mean volume of 3D visualization estimated-liver grafts and the mean actual volume was not significant((300.3±80.7)ml vs.(287.6±71.5)ml)(P=0.15), the average weight was (291.9±75.6)g and mean graft recipient body weight ratio was (3.2±0.1)%.The mean operation time was (205±59)minutes, the mean blood loss was (153±49)ml, and the mean postoperative hospital stay was (7±3)days. CONCLUSION 3D visualization reconstruction technique can accurately assess the donor condition and ensure the safety both donors and recipients.
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Affiliation(s)
- Y Luo
- Department of Liver Surgery, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200127, China
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Zhou C, Zha X, Shi P, Wei S, Wang H, Zheng R, Xia Q. Multiprotein bridging factor 2 regulates the expression of the fibroin heavy chain gene by interacting with Bmdimmed in the silkworm Bombyx mori. Insect Mol Biol 2016; 25:509-518. [PMID: 27110998 DOI: 10.1111/imb.12239] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Multiprotein bridging factor 2 (MBF2) was first isolated from the posterior silk gland of Bombyx mori. However, its function in B. mori is still unknown. Herein, MBF2 transcripts were detected mainly in the posterior silk gland and Malpighian tubules of B. mori larvae via a quantitative PCR analysis. An analysis of temporal expression patterns showed that the expression pattern of MBF2 was the opposite of that of the fibroin heavy chain (fibH) gene, as its expression was high during the fourth-instar moulting stage, decreased gradually during the fifth-instar feeding stage and disappeared at the end of the fifth-instar phase. Furthermore, bimolecular fluorescent complementation and Far-Western blot assays showed that MBF2 interacted with the basic helix-loop-helix transcription factor Bmdimmed. Dual luciferase reporter assays showed that MBF2 down-regulated the promoter activity of fibH and inhibited the effect of Bmdimmed (Bmdimm) on fibH expression. MBF2 expression was induced in silk glands after treatment with 20-hydroxyecdysone in vivo and in vitro. These findings suggest that MBF2 is a transcriptional repressor that is involved in controlling the regulation of the fibH gene in the posterior silk gland by interacting with Bmdimm.
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Affiliation(s)
- C Zhou
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, China
| | - X Zha
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, China
| | - P Shi
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, China
| | - S Wei
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, China
| | - H Wang
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, China
| | - R Zheng
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, China
| | - Q Xia
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, China
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Cai G, Zhang X, Xin L, Wang L, Wang M, Yang X, Li X, Xia Q, Xu S, Ding C, Pan F. Associations between vitamin D receptor gene polymorphisms and ankylosing spondylitis in Chinese Han population: a case-control study. Osteoporos Int 2016; 27:2327-2333. [PMID: 26815041 DOI: 10.1007/s00198-016-3500-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Accepted: 01/20/2016] [Indexed: 12/14/2022]
Abstract
UNLABELLED We assessed whether the vitamin D receptor gene polymorphisms (FokI, BsmI, ApaI, and TaqI) were associated with ankylosing spondylitis (AS) in a Chinese Han population. The TaqI polymorphism G allele was a risk factor in AS susceptibility. INTRODUCTION Previous studies have found that serum vitamin D levels are declined in patients with AS. The present study aims to evaluate the role of vitamin D receptor (VDR) gene polymorphisms in AS susceptibility in a Chinese Han population. METHODS Four single nucleotide polymorphisms (SNPs) in the VDR gene (FokI (rs2228570), BsmI (rs1544410), ApaI (rs7975232), and TaqI (rs731236)) were genotyped by the improved multiplex ligase detection reaction (iMLDR) method in 620 AS patients and 620 geographically and ethnically matched healthy controls. Haplotypes were constructed after linkage disequilibrium (LD) analysis. RESULTS Statistically significant difference was only found in the TaqI polymorphism between AS patients and controls. The TaqI polymorphism G allele was higher in AS group than that in controls (OR [95 % CI] = 1.624 [1.122-2.352], χ (2) = 6.705, P = 0.006). Linkage disequilibrium has been detected in TaqI and BsmI polymorphisms (D' = 0.87, r (2) = 0.70). Two novel haplotypes (H1: AC and H2: GT) were significantly associated with the risk of AS, and they play protective and risk roles in AS morbidity, respectively. CONCLUSIONS The VDR gene TaqI polymorphism G allele may be a risk factor in AS susceptibility.
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Affiliation(s)
- G Cai
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, 230032, People's Republic of China
| | - X Zhang
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, 230032, People's Republic of China
| | - L Xin
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, 230032, People's Republic of China
| | - L Wang
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, 230032, People's Republic of China
| | - M Wang
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, 230032, People's Republic of China
| | - X Yang
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, 230032, People's Republic of China
| | - X Li
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, 230032, People's Republic of China
| | - Q Xia
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, 230032, People's Republic of China
| | - S Xu
- Department of Rheumatism and Immunity, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - C Ding
- Department of Rheumatism and Immunity, The First Affiliated Hospital of Anhui Medical University, Hefei, China
- Menzies Research Institute Tasmania, University of Tasmania, Hobart, TAS, Australia
| | - F Pan
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, 230032, People's Republic of China.
- Menzies Research Institute Tasmania, University of Tasmania, Hobart, TAS, Australia.
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Yan J, Xia Q, Wamer WG, Boudreau MD, Warbritton A, Howard PC, Fu PP. Levels of retinyl palmitate and retinol in the skin of SKH-1 mice topically treated with retinyl palmitate and concomitant exposure to simulated solar light for thirteen weeks. Toxicol Ind Health 2016; 23:581-9. [DOI: 10.1177/0748233708090904] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- J Yan
- National Center for Toxicological Research, US Food and Drug Administration, Jefferson, Arkansas, USA
| | - Q Xia
- National Center for Toxicological Research, US Food and Drug Administration, Jefferson, Arkansas, USA
| | - WG Wamer
- Center for Food Safety and Applied Nutrition, US Food and Drug Administration, College Park, Maryland, USA
| | - MD Boudreau
- National Center for Toxicological Research, US Food and Drug Administration, Jefferson, Arkansas, USA
| | - A Warbritton
- Toxicological Pathology Associates, Jefferson, Arkansas, USA
| | - PC Howard
- National Center for Toxicological Research, US Food and Drug Administration, Jefferson, Arkansas, USA
| | - PP Fu
- National Center for Toxicological Research, US Food and Drug Administration, Jefferson, Arkansas, USA
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Xiao H, Sun H, Xiang F, Xia Q, Liu X, Xiang Y. 354P Soluble CD160 augments cytokine secretion and cytolytic activity by tumor-specific CD8-T cells in vitro. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv528.11] [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: 11/12/2022] Open
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Shi XL, de Mare-Bredemeijer ELD, Tapirdamaz Ö, Hansen BE, van Gent R, van Campenhout MJH, Mancham S, Litjens NHR, Betjes MGH, van der Eijk AA, Xia Q, van der Laan LJW, de Jonge J, Metselaar HJ, Kwekkeboom J. CMV Primary Infection Is Associated With Donor-Specific T Cell Hyporesponsiveness and Fewer Late Acute Rejections After Liver Transplantation. Am J Transplant 2015; 15:2431-42. [PMID: 25943855 DOI: 10.1111/ajt.13288] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2014] [Revised: 02/17/2015] [Accepted: 02/22/2015] [Indexed: 01/25/2023]
Abstract
Viral infections, including cytomegalovirus (CMV), abrogate transplantation tolerance in animal models. Whether this also occurs in humans remains elusive. We investigated how CMV affects T cells and rejection episodes after liver transplantation (LT). Phenotype and alloreactivity of peripheral and allograft-infiltrating T cells from LT patients with different CMV status were analyzed by flow cytometry. The association of CMV status with early and late acute rejection was retrospectively analyzed in a cohort of 639 LT patients. CMV-positivity was associated with expansion of peripheral effector memory T cell subsets after LT. Patients with CMV primary infection showed donor-specific CD8(+) T cell hyporesponsiveness. While terminally differentiated effector memory cells comprised the majority of peripheral donor-specific CD8(+) T cells in CMV primary infection patients, they were rarely present in liver allografts. Retrospective analysis showed that R(-) D(+) serostatus was an independent protective factor for late acute rejection by multivariate Cox regression analysis (hazard ratio [HR] = 0.18, 95% CI = 0.04-0.86, p = 0.015). Additionally, CMV primary infection patients showed the highest Vδ1/Vδ2 γδ T cell ratio, which has been shown to be associated with operational tolerance after LT. In conclusion, our data suggest that CMV primary infection may promote tolerance to liver allografts, and CMV status should be considered when tapering or withdrawing immunosuppression.
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Affiliation(s)
- X-L Shi
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, The Netherlands.,Department of Liver Surgery, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - E L D de Mare-Bredemeijer
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
| | - Ö Tapirdamaz
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
| | - B E Hansen
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
| | - R van Gent
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
| | - M J H van Campenhout
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
| | - S Mancham
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
| | - N H R Litjens
- Department of Internal Medicine, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
| | - M G H Betjes
- Department of Internal Medicine, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
| | - A A van der Eijk
- Department of Virology, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
| | - Q Xia
- Department of Liver Surgery, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - L J W van der Laan
- Department of Surgery, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
| | - J de Jonge
- Department of Surgery, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
| | - H J Metselaar
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
| | - J Kwekkeboom
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
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Cai G, Xia Q, Fan D, Li X, Ding N, Hu Y, Yang X, Liu L, Xin L, Wang L, Xu S, Xu J, Zou Y, Ding C, Pan F. Association between DEFB103 gene copy number variation and ankylosing spondylitis: a case-control study. ACTA ACUST UNITED AC 2015. [PMID: 26224324 DOI: 10.1111/tan.12630] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
In this brief communication, we investigate the role of DEFB103 gene copy number variation (CNV) in ankylosing spondylitis (AS) susceptibility. A total of 807 Chinese individuals including 406 AS patients and 401 controls were enrolled. The DEFB103 copy number was measured by two sets of probes to obtain a stable result in a custom-by-design Multiplex AccuCopy(™) kit (Genesky Biotechnologies Inc., Shanghai, China) based on a multiplex fluorescence competitive polymerase chain reaction (PCR) principle. The copy number of DEFB103 ranged from 2 to 6 in both AS patients and controls. Mann-Whitney U test and chi-squared test were performed to analyze the difference of DEFB103 copy number between AS patients and controls while no statistical difference has been found. We considered the copy number of DEFB103 gene may not associate with susceptibility to AS.
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Affiliation(s)
- G Cai
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, China
| | - Q Xia
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, China
| | - D Fan
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, China
| | - X Li
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, China
| | - N Ding
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, China
| | - Y Hu
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, China
| | - X Yang
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, China
| | - L Liu
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, China
| | - L Xin
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, China
| | - L Wang
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, China
| | - S Xu
- Department of Rheumatism and Immunity, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - J Xu
- Department of Rheumatism and Immunity, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Y Zou
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, China
| | - C Ding
- Department of Rheumatism and Immunity, The First Affiliated Hospital of Anhui Medical University, Hefei, China.,Menzies Institute for Medical Research, University of Tasmania, Hobart, Australia
| | - F Pan
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, China.,Department of Rheumatism and Immunity, The First Affiliated Hospital of Anhui Medical University, Hefei, China.,Menzies Institute for Medical Research, University of Tasmania, Hobart, Australia
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65
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Yang TH, Chen YK, Xue F, Han LZ, Shen CH, Zhou T, Luo Y, Zhang JJ, Xia Q. Influence ofCYP3A5genotypes on tacrolimus dose requirement: age and its pharmacological interaction withABCB1genetics in the Chinese paediatric liver transplantation. Int J Clin Pract 2015:53-62. [PMID: 26176181 DOI: 10.1111/ijcp.12667] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Affiliation(s)
- T.-H. Yang
- Department of Liver Surgery and Liver Transplantation; Ren Ji Hospital; School of Medicine Shanghai Jiao Tong University; Shanghai China
| | - Y.-K. Chen
- Department of Liver Surgery and Liver Transplantation; Ren Ji Hospital; School of Medicine Shanghai Jiao Tong University; Shanghai China
| | - F. Xue
- Department of Liver Surgery and Liver Transplantation; Ren Ji Hospital; School of Medicine Shanghai Jiao Tong University; Shanghai China
| | - L.-Z. Han
- Department of Liver Surgery and Liver Transplantation; Ren Ji Hospital; School of Medicine Shanghai Jiao Tong University; Shanghai China
| | - C.-H. Shen
- Department of Liver Surgery and Liver Transplantation; Ren Ji Hospital; School of Medicine Shanghai Jiao Tong University; Shanghai China
| | - T. Zhou
- Department of Liver Surgery and Liver Transplantation; Ren Ji Hospital; School of Medicine Shanghai Jiao Tong University; Shanghai China
| | - Y. Luo
- Department of Liver Surgery and Liver Transplantation; Ren Ji Hospital; School of Medicine Shanghai Jiao Tong University; Shanghai China
| | - J.-J. Zhang
- Department of Liver Surgery and Liver Transplantation; Ren Ji Hospital; School of Medicine Shanghai Jiao Tong University; Shanghai China
| | - Q. Xia
- Department of Liver Surgery and Liver Transplantation; Ren Ji Hospital; School of Medicine Shanghai Jiao Tong University; Shanghai China
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66
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Xia Q, Hu Q, Wang H, Yang H, Gao F, Ren H, Chen D, Fu C, Zheng L, Zhen X, Ying Z, Wang G. Induction of COX-2-PGE2 synthesis by activation of the MAPK/ERK pathway contributes to neuronal death triggered by TDP-43-depleted microglia. Cell Death Dis 2015; 6:e1702. [PMID: 25811799 PMCID: PMC4385945 DOI: 10.1038/cddis.2015.69] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Revised: 01/17/2015] [Accepted: 02/16/2015] [Indexed: 12/12/2022]
Abstract
Neuroinflammation is a striking hallmark of amyotrophic lateral sclerosis (ALS) and other neurodegenerative disorders. Previous studies have shown the contribution of glial cells such as astrocytes in TDP-43-linked ALS. However, the role of microglia in TDP-43-mediated motor neuron degeneration remains poorly understood. In this study, we show that depletion of TDP-43 in microglia, but not in astrocytes, strikingly upregulates cyclooxygenase-2 (COX-2) expression and prostaglandin E2 (PGE2) production through the activation of MAPK/ERK signaling and initiates neurotoxicity. Moreover, we find that administration of celecoxib, a specific COX-2 inhibitor, greatly diminishes the neurotoxicity triggered by TDP-43-depleted microglia. Taken together, our results reveal a previously unrecognized non-cell-autonomous mechanism in TDP-43-mediated neurodegeneration, identifying COX-2-PGE2 as the molecular events of microglia- but not astrocyte-initiated neurotoxicity and identifying celecoxib as a novel potential therapy for TDP-43-linked ALS and possibly other types of ALS.
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Affiliation(s)
- Q Xia
- Laboratory of Molecular Neuropathology, Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, China
| | - Q Hu
- Laboratory of Molecular Neuropathology, Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, China
| | - H Wang
- Laboratory of Molecular Neuropathology, Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, China
| | - H Yang
- Laboratory of Molecular Neuropathology, Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, China
| | - F Gao
- Laboratory of Molecular Neuropathology, Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, China
| | - H Ren
- Laboratory of Molecular Neuropathology, Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, China
| | - D Chen
- Laboratory of Molecular Neuropathology, Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, China
| | - C Fu
- Key Laboratory of Brain Function and Disease, School of Life Sciences, University of Science & Technology of China, Chinese Academy of Sciences, Hefei, Anhui, China
| | - L Zheng
- Laboratory of Molecular Neuropathology, Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, China
| | - X Zhen
- Laboratory of Molecular Neuropathology, Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, China
| | - Z Ying
- Laboratory of Molecular Neuropathology, Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, China
- Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, China
| | - G Wang
- Laboratory of Molecular Neuropathology, Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, China
- Key Laboratory of Brain Function and Disease, School of Life Sciences, University of Science & Technology of China, Chinese Academy of Sciences, Hefei, Anhui, China
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Lin Q, Fang B, Huang H, Yu F, Chai X, Zhang Y, Zhou J, Xia Q, Li Y, Song Y. Efficacy of bortezomib and thalidomide in the recrudescent form of multicentric mixed-type Castleman's disease. Blood Cancer J 2015; 5:e298. [PMID: 25794134 PMCID: PMC4382655 DOI: 10.1038/bcj.2015.12] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Affiliation(s)
- Q Lin
- Henan Key Lab of Experimental Haematology, Henan Institute of Haematology, Henan Cancer Hospital affiliated to Zhengzhou University, Zhengzhou, China
| | - B Fang
- Henan Key Lab of Experimental Haematology, Henan Institute of Haematology, Henan Cancer Hospital affiliated to Zhengzhou University, Zhengzhou, China
| | - H Huang
- Henan Key Lab of Experimental Haematology, Henan Institute of Haematology, Henan Cancer Hospital affiliated to Zhengzhou University, Zhengzhou, China
| | - F Yu
- Henan Key Lab of Experimental Haematology, Henan Institute of Haematology, Henan Cancer Hospital affiliated to Zhengzhou University, Zhengzhou, China
| | - X Chai
- Henan Key Lab of Experimental Haematology, Henan Institute of Haematology, Henan Cancer Hospital affiliated to Zhengzhou University, Zhengzhou, China
| | - Y Zhang
- Henan Key Lab of Experimental Haematology, Henan Institute of Haematology, Henan Cancer Hospital affiliated to Zhengzhou University, Zhengzhou, China
| | - J Zhou
- Henan Key Lab of Experimental Haematology, Henan Institute of Haematology, Henan Cancer Hospital affiliated to Zhengzhou University, Zhengzhou, China
| | - Q Xia
- Henan Key Lab of Experimental Haematology, Henan Institute of Haematology, Henan Cancer Hospital affiliated to Zhengzhou University, Zhengzhou, China
| | - Y Li
- Henan Key Lab of Experimental Haematology, Henan Institute of Haematology, Henan Cancer Hospital affiliated to Zhengzhou University, Zhengzhou, China
| | - Y Song
- Henan Key Lab of Experimental Haematology, Henan Institute of Haematology, Henan Cancer Hospital affiliated to Zhengzhou University, Zhengzhou, China
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68
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Zhang S, Zhang M, Xia Q, Zhang JJ. Biliary reconstruction and complications in adult living donor liver transplantation: systematic review and meta-analysis. Transplant Proc 2015; 46:208-15. [PMID: 24507053 DOI: 10.1016/j.transproceed.2013.05.014] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2013] [Revised: 04/28/2013] [Accepted: 05/09/2013] [Indexed: 12/11/2022]
Abstract
OBJECTIVE The purpose of this meta-analysis was to compare outcomes of different techniques used for biliary reconstruction in adult donor liver transplantation. METHODS We searched the literature via Pubmed, Embase, Ovid, the Cochrane Hepato-Biliary Group Controlled Trials Regsistry, the Cochrane Central Registry of Controlled Trials, the Cochrane Library database, and Web of Science. Then with the data extracted from the literature, the effects that biliary reconstruction techniques in living-donor liver transplantation (LDLT) had on the occurrence of biliary complications were compared. With the use of random-effects and fixed-effect models, the results were obtained and expressed as odds ratio. RESULTS We found 16 eligible studies from various medical centers around the world. Duct-to-duct (DD) reconstruction was performed in the majority of patients (922/1,564). Multiple biliary ducts were encountered in 16.7%-60.4%, and ductoplasty was performed in 7.9%-74% of the patients. Both graft and posterior layer of bile duct anastomosis in DD reconstruction were studied, and no statistically differences in incidence of biliary complications were found between the Roux-en-Y hepaticojejunostomy (RYHJ) and DD groups. Nonsurgical management of biliary complications was the first choice of treatment. CONCLUSIONS Our study found that there is no clear evidence in favor of using DD or RYHJ during adult LDLT.
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Affiliation(s)
- S Zhang
- Renji Hospital, Shanghai Jiaotong University School of Medicine, Transplantation Center, Shanghai, China
| | - M Zhang
- Renji Hospital, Shanghai Jiaotong University School of Medicine, Transplantation Center, Shanghai, China
| | - Q Xia
- Renji Hospital, Shanghai Jiaotong University School of Medicine, Transplantation Center, Shanghai, China
| | - J-J Zhang
- Renji Hospital, Shanghai Jiaotong University School of Medicine, Transplantation Center, Shanghai, China.
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69
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Yu H, Shen Y, Hong J, Xia Q, Zhou F, Liu X. The contribution of TGF-β in Epithelial-Mesenchymal Transition (EMT): Down-regulation of E-cadherin via snail. Neoplasma 2015; 62:1-15. [PMID: 25563362 DOI: 10.4149/neo_2015_002] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
UNLABELLED TGF-β plays a central role in epithelial-mesenchymal transition (EMT), which is a highly conserved and reversible process that governs tumor development, invasion and metastasis. Through this transition, the epithelial cell acquires a migratory behavior which allows it to move away from the cell community and to integrate into the surrounding tissue. The cells lost epithelial phenotypes including the change of cell polarity and the loss of specialized cell-cell contacts, which related with the shortage of E-cadherin directly. The increasing reports indicated that TGF-β down-regulated the expression of E-cadherin through snail signaling pathway, which played an important role in the development of EMT. In this review, we summarized the contribution of TGF-β in EMT and discussed the molecular mechanism of snail signaling participating in the regulation of E-cadherin triggered by TGF-β. KEYWORDS TGF-β, Epithelial-mesenchymal-transition (EMT), snail family, E-cadherin.
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70
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Fang X, Jiang C, Xia Q. Effectiveness evaluation of dendritic cell immunotherapy for osteosarcoma on survival rate and in vitro immune response. Genet Mol Res 2015; 14:11763-70. [DOI: 10.4238/2015.october.2.10] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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71
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Li XP, Xia Q, Qu D, Wu TC, Yang DG, Hao WD, Jiang X, Li XM. The dynamic dielectric at a brain functional site and an EM wave approach to functional brain imaging. Sci Rep 2014; 4:6893. [PMID: 25367217 PMCID: PMC4219156 DOI: 10.1038/srep06893] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2014] [Accepted: 10/15/2014] [Indexed: 11/12/2022] Open
Abstract
Functional brain imaging has tremendous applications. The existing methods for functional brain imaging include functional Magnetic Resonant Imaging (fMRI), scalp electroencephalography (EEG), implanted EEG, magnetoencephalography (MEG) and Positron Emission Tomography (PET), which have been widely and successfully applied to various brain imaging studies. To develop a new method for functional brain imaging, here we show that the dielectric at a brain functional site has a dynamic nature, varying with local neuronal activation as the permittivity of the dielectric varies with the ion concentration of the extracellular fluid surrounding neurons in activation. Therefore, the neuronal activation can be sensed by a radiofrequency (RF) electromagnetic (EM) wave propagating through the site as the phase change of the EM wave varies with the permittivity. Such a dynamic nature of the dielectric at a brain functional site provides the basis for an RF EM wave approach to detecting and imaging neuronal activation at brain functional sites, leading to an RF EM wave approach to functional brain imaging.
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Affiliation(s)
- X P Li
- Neuroengineering Lab, National University of Singapore, 9 Engineering Drive 1, Singapore 117575
| | - Q Xia
- Newrocare Pte Ltd, 6 EU Tong Sen Street, #12-03, The Central, Singapore 059817
| | - D Qu
- Neuroengineering Lab, National University of Singapore, 9 Engineering Drive 1, Singapore 117575
| | - T C Wu
- Neuroengineering Lab, National University of Singapore, 9 Engineering Drive 1, Singapore 117575
| | - D G Yang
- Guilin University of Electronic Technology, No.1 Jinji Road, Guilin 541004, Guangxi, P.R. China
| | - W D Hao
- Guilin University of Electronic Technology, No.1 Jinji Road, Guilin 541004, Guangxi, P.R. China
| | - X Jiang
- Guilin University of Electronic Technology, No.1 Jinji Road, Guilin 541004, Guangxi, P.R. China
| | - X M Li
- Guilin University of Electronic Technology, No.1 Jinji Road, Guilin 541004, Guangxi, P.R. China
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Sun R, Zhao G, Ni S, Xia Q. Lipid based nanocarriers with different lipid compositions for topical delivery of resveratrol: comparative analysis of characteristics and performance. J Drug Deliv Sci Technol 2014. [DOI: 10.1016/s1773-2247(14)50124-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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73
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Abstract
The nature of subproton scale fluctuations in the solar wind is an open question, partly because two similar types of electromagnetic turbulence can occur: kinetic Alfvén turbulence and whistler turbulence. These two possibilities, however, have one key qualitative difference: whistler turbulence, unlike kinetic Alfvén turbulence, has negligible power in density fluctuations. In this Letter, we present new observational data, as well as analytical and numerical results, to investigate this difference. These results show, for the first time, that the fluctuations well below the proton scale are predominantly kinetic Alfvén turbulence, and, if present at all, the whistler fluctuations make up only a small fraction of the total energy.
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Affiliation(s)
- C H K Chen
- Space Sciences Laboratory, University of California, Berkeley, California 94720, USA.
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74
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Gao S, Guo X, Liu T, Liu J, Chen W, Xia Q, Chen Y, Tang Y. Serotonin modulates outward potassium currents in mouse olfactory receptor neurons. Physiol Res 2013; 62:455-62. [PMID: 23590600 DOI: 10.33549/physiolres.932413] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Monoaminergic neurotransmitter 5-hydroxytryptamine (5-HT), also known as serotonin, plays important roles in modulating the function of the olfactory system. However, thus far, the knowledge about 5-HT and its receptors in olfactory receptor neurons (ORNs) and their physiological role have not been fully characterized. In the present study, reverse transcription-polymerase chain reaction (RT-PCR) analysis revealed the presence of 5-HT(1A) and 5-HT(1B) receptor subtypes in mouse olfactory epithelium at the mRNA level. With subtype selective antibodies and standard immunohistochemical techniques, both receptor subtypes were found to be positively labeled. To further elucidate the molecular mechanisms of 5-HT act on the peripheral olfactory transduction, the whole-cell patch clamp techniques were used on freshly isolated ORNs. We found that 5-HT decreased the magnitude of outward K(+) current in a dose-dependent manner and these inhibitory effects were markedly attenuated by the 5-HT(1A) receptor blocker WAY-100635 and the 5-HT(1B) receptor antagonist GR55562. These data suggested that 5-HT may play a role in the modulation of peripheral olfactory signals by regulating outward potassium currents, both 5-HT(1A) and 5-HT(1B) receptors were involved in this regulation.
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Affiliation(s)
- S Gao
- Department of Otorhinolaryngology and Translational Neuroscience Center, West China Hospital of Sichuan University, Chengdu, China
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Liu P, Liang H, Xia Q, Li P, Kong H, Lei P, Wang S, Tu Z. Resveratrol induces apoptosis of pancreatic cancers cells by inhibiting miR-21 regulation of BCL-2 expression. Clin Transl Oncol 2013; 15:741-6. [DOI: 10.1007/s12094-012-0999-4] [Citation(s) in RCA: 94] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2012] [Accepted: 12/27/2012] [Indexed: 12/21/2022]
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76
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Abstract
MicroRNA (miRNA) has an important role as a master regulator of gene expression in immune system and is upregulated during T cell differentiation, however its function is not clear yet. In this study, the contribution of miR-31 in T cell activation was investigated. miR-31 was upregulated during the activation of primary T lymphocytes upon T-cell receptor (TCR) stimulation. Ectopic expression of miR-31 increased the expression of interleukin (IL)-2, while knockdown of endogenous miR-31 decreased the IL-2 expression. To gain more insights into the regulatory mechanism, we performed a bioinformatic analysis and found miR-31 potentially targeted kinase suppressor of ras 2 (KSR2), a repression factor of Ras2 kinase. Using reporter gene and western blotting assays, we confirmed that miR-31 could inhibit KSR2 by directly targeting its 3' untranslated region (UTR). Moreover, miR-31 enhanced nuclear factor of activated T cells (NF-AT) activity in Jurkat T cells, and increased transcription activity of IL-2 promoter in primary T cells. In conclusion, our study demonstrated that miR-31 upregulated IL-2 expression via reduction of its up-stream kinase suppressor, KSR2, and is a component of T cell activation.
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Affiliation(s)
- F Xue
- Department of Liver Surgery & Liver Transplantation, Shanghai Jiao Tong University School of Medicine, Ren Ji Hospital, Shanghai, China
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Zhu T, Chen Z, Xia Q, Jiang S, Jin Q, Farahani MRD, Cai L. A suppository for treating cervical erosion and its preparation method. CLIN EXP OBSTET GYN 2013; 40:361-366. [PMID: 24283166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
OBJECTIVE To study a suppository for treating cervical erosion, its preparation method, and to observe its therapeutic effect on cervical erosion in animal models. METHODS Twenty rats were divided into five groups: blank control group, model group, and three different therapeutic concentration groups. Phenol slurry was injected through the vagina to create cervical erosion animal models. After seven days of drug treatment, the difference of cervical histopathology was observed and compared between different groups. RESULTS Compared with the control group, the model group showed obvious cervical erosion, inflammatory cell infiltration, vascular dilatation, and congestion. Among the administration group, the high administration group had the least inflammation and cell infiltration in the mucous membrane. CONCLUSIONS There is a significant effect of therapeutic drugs in rats with cervical erosion, which is related to the concentration of drugs.
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Affiliation(s)
- T Zhu
- Department of Biopharmaceutics, School of Pharmacy, Wenzhou Medical College, Zhejiang, Wenzhou, China
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Zhen C, Chen L, Zhao Q, Liang B, Gu YX, Bai ZF, Wang K, Xu X, Han QY, Fang DF, Wang SX, Zhou T, Xia Q, Gong WL, Wang N, Li HY, Jin BF, Man JH. Gankyrin promotes breast cancer cell metastasis by regulating Rac1 activity. Oncogene 2012; 32:3452-60. [PMID: 22890318 DOI: 10.1038/onc.2012.356] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2012] [Revised: 06/27/2012] [Accepted: 06/30/2012] [Indexed: 11/09/2022]
Abstract
Tumor metastasis is responsible for most cancer patients' deaths. Understanding the mechanism of metastasis is crucial for improving the cure rate for cancer. Here, we report that Gankyrin, a chaperone of ubiquitin-proteasome, has an essential role in breast cancer metastasis. We find that Gankyrin is highly overexpressed in human breast cancers and the expression correlates strongly with lymph node metastasis. Knocking down Gankyrin expression in highly metastatic human breast cancer cells significantly decreases cancer cell migration and invasion. Furthermore, we demonstrate that depletion of Gankyrin inhibits intrinsic Rac1 activity and induces large focal adhesions. Overexpression of Gankyrin accelerates focal adhesion turnover and increases cell migration. Notably, reduction of Gankyrin expression in mouse mammary tumor cell significantly decreases tumor metastasis to lung in animal models. Therefore, our findings suggest that Gankyrin is crucial for breast cancer metastasis and highlight the potential of Gankyrin as a therapeutic target for tumor metastasis.
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Affiliation(s)
- C Zhen
- National Center of Biomedical Analysis, Beijing, China
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79
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Zhang S, Dong Z, Zhang M, Xia Q, Liu D, Zhang JJ. Right lobe living-donor liver transplantation with or without middle hepatic vein: a meta-analysis. Transplant Proc 2012; 43:3773-9. [PMID: 22172845 DOI: 10.1016/j.transproceed.2011.08.100] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2011] [Accepted: 08/19/2011] [Indexed: 12/12/2022]
Abstract
OBJECTIVE The purpose of this meta-analysis was to compare outcomes after right-lobe living-donor liver transplantation (LDLT) with or without the middle hepatic vein (MHV). METHODS Studies were identified through a computerized search of Pubmed, Embase, Ovid, the Cochrane Hepato-Biliary Group Controlled Trials Register, the Cochrane Central Register of Controlled Trials, the Cochrane Library database, and the Web of Science. Two reviewers independently assessed the quality of each study and abstracted outcome data. We extracted data for liver functional recovery in donors, donor hospital stay, donor complications and liver functional recovery in recipients. We synthesized published data using random-effects and fixed-effect models, expressing results as weighted mean differences (WMD) or relative risk (RR). RESULTS The 11 included eligible studies came from medical centers worldwide. Significant differences between "with MHV" versus "without MHV" groups were not observed for liver functional recovery (P=.08; WMD=-2.88), donor hospital stay (P=.00; WMD=0.00), or donor complications (P=.90; RR=1.02). However, our meta-analysis showed a significant benefit for recipients liver functional recovery favoring the MHV group (P=.02; WMD=-33.06). CONCLUSIONS Our meta-analysis discovered that right lobes with MHV not only experienced better liver functional recovery in recipients, but also caused no greater harm or risk to donors.
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Affiliation(s)
- S Zhang
- Transplantation Center, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
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80
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Daniel BR, Campone M, Dieras V, Ervin T, Yu W, Paton VE, Xia Q, Peterson A. OT3-01-11: A Randomized, Phase II Multicenter, Double-Blind, Placebo-Controlled Trial Evaluating MetMAb and/or Bevacizumab in Combination with Weekly Paclitaxel in Patients with Metastatic Triple-Negative Breast Cancer. Cancer Res 2011. [DOI: 10.1158/0008-5472.sabcs11-ot3-01-11] [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: 11/16/2022]
Abstract
Abstract
Background
Dysregulation of the HGF/Met pathway has been associated with tumorigenesis in many malignancies, including the basal sub-type of triple-negative breast cancer. MetMAb (RG3638) is a recombinant, humanized, monovalent monoclonal antibody directed against Met. By binding to the extracellular domain of Met, MetMAb selectively blocks ligand binding and subsequent activation by HGF. Pre-clinical data support the efficacy of combining MetMAb with numerous chemotherapy agents and with targeted agents including bevacizumab and erlotinib. In clinic, MetMAb has been generally well tolerated as a single agent (Phase I), in combination with bevacizumab (Phase Ib) and with bevacizumab in a dose escalation/expansion study (Phase Ib)1 as well as in combination with erlotinib in patients with previously treated NSCLC2. The combination of MetMAb + erlotinib in NSCLC demonstrated significant benefit in both PFS and OS in patients with Met diagnostic positive tumors whereas those patients with Met diagnostic negative tumors demonstrated a detrimental effect in both PFS and OS. The most commonly reported adverse events associated with MetMAb are peripheral edema and fatigue.
Methods: This clinical trial is a randomized three-arm Phase II study in patients with triple-negative metastatic breast cancer, which makes up the majority of basal sub-type breast cancer. Patients will be randomized (1:1:1) to either paclitaxel + bevacizumab + placebo; paclitaxel + placebo + MetMAb; or paclitaxel + bevacizumab + MetMAb. The primary endpoint of this study is PFS in all patients and by Met diagnostic status. Secondary endpoints include an evaluation of OS, ORR, safety, and pharmacokinetics. To date, 11 patients have been enrolled, and 10 patients have been treated.
Primary and secondary analyses will include all randomized patients, with patients analyzed according to the treatment arm to which they were assigned. Kaplan-Meier methodology will be used to estimate the median PFS for each treatment arm. An estimate of the HR with 95% CI will be determined using a Cox regression model with an indicator variable for the MetMAb-containing arm. Safety will be assessed through summaries of adverse events and will include all patients who receive any amount of study treatment.
This study remains open for accrual; further details on the trial can be found on the ClinicalTrials.gov website under NCT01186991.
1. Moss et al, In: Proceedings of the 102nd Annual Meeting of the American Association for Cancer Research; 2011 Apr 2–6; Orlando, FL; AACR 2011 (abstr 4717).
2. Spigel et al, J Clin Oncol 29:2011 (suppl; abstr 7505).
Citation Information: Cancer Res 2011;71(24 Suppl):Abstract nr OT3-01-11.
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Affiliation(s)
- BR Daniel
- 1Chattanooga Oncology Hematology Associates — SCRI, Chattanooga, TN; Centre Rene Gauducheau, Nantes-Saint Herblain, France; Institute Curie, Paris, France; Florida Cancer Specialists, Englewood, FL; Genentech Inc., South San Francisco, CA
| | - M Campone
- 1Chattanooga Oncology Hematology Associates — SCRI, Chattanooga, TN; Centre Rene Gauducheau, Nantes-Saint Herblain, France; Institute Curie, Paris, France; Florida Cancer Specialists, Englewood, FL; Genentech Inc., South San Francisco, CA
| | - V Dieras
- 1Chattanooga Oncology Hematology Associates — SCRI, Chattanooga, TN; Centre Rene Gauducheau, Nantes-Saint Herblain, France; Institute Curie, Paris, France; Florida Cancer Specialists, Englewood, FL; Genentech Inc., South San Francisco, CA
| | - T Ervin
- 1Chattanooga Oncology Hematology Associates — SCRI, Chattanooga, TN; Centre Rene Gauducheau, Nantes-Saint Herblain, France; Institute Curie, Paris, France; Florida Cancer Specialists, Englewood, FL; Genentech Inc., South San Francisco, CA
| | - W Yu
- 1Chattanooga Oncology Hematology Associates — SCRI, Chattanooga, TN; Centre Rene Gauducheau, Nantes-Saint Herblain, France; Institute Curie, Paris, France; Florida Cancer Specialists, Englewood, FL; Genentech Inc., South San Francisco, CA
| | - VE Paton
- 1Chattanooga Oncology Hematology Associates — SCRI, Chattanooga, TN; Centre Rene Gauducheau, Nantes-Saint Herblain, France; Institute Curie, Paris, France; Florida Cancer Specialists, Englewood, FL; Genentech Inc., South San Francisco, CA
| | - Q Xia
- 1Chattanooga Oncology Hematology Associates — SCRI, Chattanooga, TN; Centre Rene Gauducheau, Nantes-Saint Herblain, France; Institute Curie, Paris, France; Florida Cancer Specialists, Englewood, FL; Genentech Inc., South San Francisco, CA
| | - A Peterson
- 1Chattanooga Oncology Hematology Associates — SCRI, Chattanooga, TN; Centre Rene Gauducheau, Nantes-Saint Herblain, France; Institute Curie, Paris, France; Florida Cancer Specialists, Englewood, FL; Genentech Inc., South San Francisco, CA
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Zhao B, Zhao CZ, Zhang XY, Huang XQ, Shi WZ, Fang SH, Lu YB, Zhang WP, Xia Q, Wei EQ. The new P2Y-like receptor G protein-coupled receptor 17 mediates acute neuronal injury and late microgliosis after focal cerebral ischemia in rats. Neuroscience 2011; 202:42-57. [PMID: 22155652 DOI: 10.1016/j.neuroscience.2011.11.066] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2011] [Revised: 11/25/2011] [Accepted: 11/28/2011] [Indexed: 12/29/2022]
Abstract
G protein-coupled receptor 17 (GPR17), the new P2Y-like receptor, is phylogenetically related to the P2Y and cysteinyl leukotriene receptors, and responds to both uracil nucleotides and cysteinyl leukotrienes. GPR17 has been proposed to be a damage sensor in ischemic stroke; however, its role in brain inflammation needs further detailed investigation. Here, we extended previous studies on the spatiotemporal profiles of GPR17 expression and localization, and their implications for brain injury after focal cerebral ischemia. We found that in the ischemic core, GPR17 mRNA and protein levels were upregulated at both 12-24 h and 7-14 days, but in the boundary zone the levels increased 7-14 days after reperfusion. The spatiotemporal pattern of GPR17 expression well matched the acute and late (subacute/chronic) responses in the ischemic brain. According to previous findings, in the acute phase, after ischemia (24 h), upregulated GPR17 was localized in injured neurons in the ischemic core and in a few microglia in the ischemic core and boundary zone. In the late phase (14 days), it was localized in microglia, especially in activated (ED1-positive) microglia in the ischemic core, but weakly in most microglia in the boundary zone. No GPR17 was detectable in astrocytes. GPR17 knockdown by a small interfering RNA attenuated the neurological dysfunction, infarction, and neuron loss at 24 h, and brain atrophy, neuron loss, and microglial activation at 14 days after reperfusion. Thus, GPR17 might mediate acute neuronal injury and late microgliosis after focal cerebral ischemia.
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Affiliation(s)
- B Zhao
- Department of Pharmacology, School of Medicine, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China
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82
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Qian LB, Fu JY, Cai X, Wang HP, Wang JA, Xia Q. Betulinic acid ameliorates endothelium-dependent relaxation in L-NAME-induced hypertensive rats by reducing oxidative stress. Heart 2011. [DOI: 10.1136/heartjnl-2011-300867.76] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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83
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Li XF, Liu ZD, Xia Q, Dai LY. Aspergillus spondylodiscitis in solid organ transplant recipients. Transplant Proc 2011; 42:4513-7. [PMID: 21168727 DOI: 10.1016/j.transproceed.2010.09.157] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2010] [Revised: 07/11/2010] [Accepted: 09/30/2010] [Indexed: 11/24/2022]
Abstract
BACKGROUND Transplantation practices have had a significant effect on the epidemiology of invasive Aspergillosis. Aspergillus spondylodiscitis is rare in transplant recipients. The optimal treatment has yet to be defined because of the rarity of such cases. This article reviews the available literature on Aspergillus spondylodiscitis in solid organ transplant recipients and provides recommendations on its management. METHODS We identified 15 cases of Aspergillus spondylodiscitis in transplant recipients. Most patients were heart transplant recipients. Back pain was the mode of presentation in all patients. Most cases were afebrile. The dominant location was the lumbar spine. RESULTS Aspergillus fumigatus was responsible for 84.62% of cases and A flavus for 15.38%. The overall recovery rate was 66.67%. Delay in diagnosis remained a major impediment to the successful treatment of spinal aspergillosis. Treatment included antifungal therapy alone or combined with surgery. Initial therapy with voriconazole could lead to better curative effects. CONCLUSION Combined medical and operative interventions are recommended for treatment.
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Affiliation(s)
- X-F Li
- Department of Orthopaedic Surgery, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
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84
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Pope WB, Xia Q, Paton VE, Das A, Hambleton J, Kim HJ, Huo J, Brown MS, Goldin J, Cloughesy T. Patterns of progression in patients with recurrent glioblastoma treated with bevacizumab. Neurology 2011; 76:432-7. [PMID: 21282590 DOI: 10.1212/wnl.0b013e31820a0a8a] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE We evaluated patterns of tumor progression in patients with recurrent glioblastoma who were treated with bevacizumab (BEV) alone or in combination with irinotecan (CPT-11) while participating in the BRAIN study. METHODS An independent neuroradiologist reviewed MRI scans at baseline and progression in patients who received BEV (n = 85) or BEV+CPT-11 (n = 82) while on BRAIN. Tumor patterns were scored as local, distant, diffuse, or multifocal. Median progression-free survival (PFS) and overall survival (OS) were estimated using Kaplan-Meier methods. Hazard ratios for PFS and OS were estimated using a Cox regression model. RESULTS Twenty-eight percent of patients who participated in BRAIN had nonlocal disease at baseline (72% local disease). Sixty-seven (79%) patients treated with single-agent BEV and 57 (70%) patients treated with BEV+CPT-11 experienced disease progression while on BRAIN. Most patients in each treatment group did not have a change in the radiographic pattern of their tumor (i.e., "no shift") at the time of progression. The proportion of BEV patients with no shift (82%) was greater than that of BEV+CPT-11 patients (53%, χ(2) p = 0.0004), and a greater proportion of BEV+CPT-11 patients (39%) compared with BEV patients (16%) experienced local-to-diffuse tumor pattern at progression (χ(2) p = 0.002). Patients treated with BEV or BEV+CPT-11 who had local-to-local or local-to-diffuse progression patterns had similar efficacy outcomes, including objective response, PFS, and OS. CONCLUSIONS Most patients treated with BEV or BEV+CPT-11 on BRAIN did not experience a change from baseline in radiographic characteristics of disease at the time of progression.
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Affiliation(s)
- W B Pope
- Department of Radiologic Sciences, David Geffen School of Medicine, University of California Los Angeles, 10833 Le Conte Ave, CHS, BL-428, Los Angeles, CA 90095-1721, USA.
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85
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Zhu M, Li Y, Xia Q, Wang S, Qiu Y, Che M, Dai H, Qian J, Ni Z, Axelsson J, Yan Y. Strong impact of acute kidney injury on survival after liver transplantation. Transplant Proc 2011; 42:3634-8. [PMID: 21094830 DOI: 10.1016/j.transproceed.2010.08.059] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2009] [Revised: 06/03/2010] [Accepted: 08/26/2010] [Indexed: 01/17/2023]
Abstract
Acute kidney injury (AKI) is a major complication in orthotopic liver transplantation (OLT). In an evaluation of Acute Kidney Injury Network (AKIN) criteria in liver transplanted patients, we retrospectively analyzed the usefulness of these criteria to predict survival of 193 consecutive patients at a single center who underwent primary OLT for clinical parameters and peak AKI. Postoperative AKI according to AKIN occurred in 60.1% of the patients, namely, stages 1, 2, and 3 in 30%, 13% and 17.1% respectively. Using multivariate logistic regression, AKIN stage 1 and 2 AKI were independently associated with the pre-OLT Model for End-Stage Liver Disease (MELD) score and age, while stage 3 AKI was independently associated with MELD and Acute Physiology and Chronic Health Evaluation (APACHE) II scores. The 28-day and 1-year mortality post-OLT of AKI patients were 15.5% and 25.9% respectively compared with 0% and 3.9% among non-AKI patients (P < .05 for both). The survival rates of non-AKI and stages 1, 2, and 3 AKI subjects were 96%, 85.5%, 84%, and 45.3%, respectively. Cox regression analysis showed independent risk factors for mortality during the first year after transplantation to include post-OLT AKI (12.1; P < .05), post-OLT infection (HR 4.7; P < .01), pre-OLT hypertension (HR 4.4; P < .01) hazard ratio [HR] and post-OLT APACHE II ≥10 (HR 3.6; P < .05). We concluded that AKI as defined by the AKIN criteria is a major complication of OLT linked to a poor outcomes. It remains to be evaluated whether aggressive perioperative therapy to prevent AKI can improve survival among OLT patients.
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Affiliation(s)
- M Zhu
- Renal Division, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
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86
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Nguyen LT, Hamilton CD, Xia Q, Stout JE. Mortality before or during treatment among tuberculosis patients in North Carolina, 1993-2003. Int J Tuberc Lung Dis 2011; 15:257-i. [PMID: 21219691 PMCID: PMC3805270] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023] Open
Abstract
SETTING North Carolina, United States. OBJECTIVE To investigate the demographic and behavioral risk factors associated with death among tuberculosis (TB) patients in North Carolina. DESIGN Retrospective cohort of all TB patients reported in North Carolina, 1993-2003 (inclusive). A surveillance dataset based upon Report of Verified Case of Tuberculosis (RVCT) records was cross-linked with the National Death Index (NDI) to confirm date of death and capture additional deaths. RESULTS Among 5311 TB patients, 181 died before initiation of TB treatment, and 540 died before completion of TB treatment. Increasing age, miliary/meningeal disease, and human immunodeficiency virus (HIV) infection were associated with increased risk of death before treatment, during early treatment (initial 8 weeks) and later in TB treatment. In addition to these factors, excess alcohol use (HR 1.62, 95%CI 1.13-2.32) and residence in a nursing home (HR 1.65, 95%CI 1.20-2.29) were associated with a significantly increased risk of death during the first 8 weeks of treatment. CONCLUSION Many of the deaths in TB patients occurred in the most vulnerable populations, such as the elderly or those with HIV infection, and may be attributable to delayed diagnosis and poor functional status.
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Affiliation(s)
- L. T. Nguyen
- Department of Medicine, Duke University Medical Center, Durham, North Carolina
| | - C. D. Hamilton
- Department of Medicine, Duke University Medical Center, Durham, North Carolina
| | - Q. Xia
- Research Triangle Institute International, Research Triangle Park, North Carolina, USA
| | - J. E. Stout
- Correspondence to: Jason Stout, Box 102359, Duke University Medical Center, Durham, NC 27710, USA. Tel: (+1) 919 668 0826. Fax: (+1) 919 681 7494.
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87
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Abstract
Incorporation of sunscreens into lipid carriers with an increased sun protection factor (SPF) has not yet been fully accomplished. In the present paper, the effectiveness of a sunscreen mixture, incorporated into the novel topical delivery systems, i.e. solid lipid nanoparticles (SLN) and nanostructured lipid carriers (NLC), used as ultraviolet (UV) protector enhancers with a distinctly higher loading capacity has been developed and evaluated. SLN and NLC were produced by hot high pressure homogenization technique in lab scale production. Size distribution and storage stability of formulations were investigated by laser diffractometry and photon correlation spectroscopy. Nanoparticles were characterized by their melting and recrystallization behaviour recorded by differential scanning calorimetry. Lipid nanoparticles produced with a solid matrix (SLN and NLC) were established as a UV protection system. The loading capacities for molecular sunscreens reported before now were in the range of 10-15%. It was possible to load NLC with up to 70% with molecular sunscreen, which is appropriate to obtain high SPFs with this novel UV protection system. The developed formulations provide a beneficial alternative to conventional sunscreen formulations. The UV protective efficacy of the lipid particles varied with the nature of lipid and UV wavelength.
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Affiliation(s)
- Q Xia
- Department of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
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88
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Aurelle D, Baker AJ, Bottin L, Brouat C, Caccone A, Chaix A, Dhakal P, Ding Y, Duplantier JM, Fiedler W, Fietz J, Fong Y, Forcioli D, Freitas TRO, Gunnarsson GH, Haddrath O, Hadziabdic D, Hauksdottir S, Havill NP, Heinrich M, Heinz T, Hjorleifsdottir S, Hong Y, Hreggvidsson GO, Huchette S, Hurst J, Kane M, Kane NC, Kawakami T, Ke W, Keith RA, Klauke N, Klein JL, Kun JFJ, Li C, Li GQ, Li JJ, Loiseau A, Lu LZ, Lucas M, Martins-Ferreira C, Mokhtar-Jamaï K, Olafsson K, Pampoulie C, Pan L, Pooler MR, Ren JD, Rinehart TA, Roussel V, Santos MO, Schaefer HM, Scheffler BE, Schmidt A, Segelbacher G, Shen JD, Skirnisdottir S, Sommer S, Tao ZR, Taubert R, Tian Y, Tomiuk J, Trigiano RN, Ungerer MC, Van Wormhoudt A, Wadl PA, Wang DQ, Weis-Dootz T, Xia Q, Yuan QY. Permanent Genetic Resources added to the Molecular Ecology Resources Database 1 February 2010-31 March 2010. Mol Ecol Resour 2010; 10:751-4. [PMID: 21565086 DOI: 10.1111/j.1755-0998.2010.02871.x] [Citation(s) in RCA: 25] [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: 11/27/2022]
Abstract
This article documents the addition of 228 microsatellite marker loci to the Molecular Ecology Resources Database. Loci were developed for the following species: Anser cygnoides, Apodemus flavicollis, Athene noctua, Cercis canadensis, Glis glis, Gubernatrix cristata, Haliotis tuberculata, Helianthus maximiliani, Laricobius nigrinus, Laricobius rubidus, Neoheligmonella granjoni, Nephrops norvegicus, Oenanthe javanica, Paramuricea clavata, Pyrrhura orcesi and Samanea saman. These loci were cross-tested on the following species: Apodemus sylvaticus, Laricobius laticollis and Laricobius osakensis (a proposed new species currently being described).
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Affiliation(s)
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- Aix-Marseille Université, Centre d'Océanologie de Marseille, CNRS-UMR 6540 DIMAR, rue de la Batterie des Lions, 13007 Marseille, France
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89
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Xia Q, Zhao XJ, Chen SJ, Ma WZ, Zhang J, Wang XL. Effect of solution-blended poly(styrene-co-acrylonitrile) copolymer on crystallization of poly(vinylidene fluoride). EXPRESS POLYM LETT 2010. [DOI: 10.3144/expresspolymlett.2010.36] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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90
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Sun GQ, Wang J, Li Q, Ye ZG, Xia Q. Mitochondrial pores modulate the protective effect of acetylcholine on ventricular myocytes during ischemia/reperfusion injury. ACTA ACUST UNITED AC 2010; 32:107-12. [DOI: 10.1358/mf.2010.32.2.1428738] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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91
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Najib E, Puranik R, Duflou J, Xia Q, Bao S. Age Related Inflammatory Characteristics of Coronary Artery Disease. Heart Lung Circ 2010. [DOI: 10.1016/j.hlc.2010.06.713] [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: 11/27/2022]
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92
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Wang Z, Zhao M, Li D, Zha X, Xia Q, Xiang Z, He N. BmHrp28 is a RNA-binding protein that binds to the female-specific exon 4 of Bombyx mori dsx pre-mRNA. Insect Mol Biol 2009; 18:795-803. [PMID: 19863667 DOI: 10.1111/j.1365-2583.2009.00943.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The Bombyx mori sex determination gene Bmdsx is alternatively spliced in the male and female to produce the male- and female-specific proteins. In an effort to better understand the mechanism of the alternative splicing regulation of Bmdsx, we conducted a gel-shift assay followed by LC-MS/MS analysis to identify the putative proteins bound to the cis-element CE1+6 in the exon 4 of Bmdsx. A protein named as BmHrp28 which is homologous to the Drosophila Hrp48, a member of the hnRNPA/B family, was identified and expressed in Escherichia coli for testing RNA-protein binding in vitro. All of the results showed that BmHrp28 specifically bound to the CE1+6 RNA probe. BmHrp28 has two RNA recognition motifs at the N-terminal and a glycine-rich motif at the C-terminal. It might be one of the factors involved in the male-specific splicing of Bmdsx.
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Affiliation(s)
- Z Wang
- The Key Sericultural Laboratory of Agricultural Ministry, College of Biotechnology, Southwest University, Beibei, Chongqing, China
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93
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Jin X, Xia Q, Sun P, Wei C. MP-20.18: Development of Lyophilized BCG Homogenate-Carbon Nano Tube System and Its Implement in the Prevention of Postperative Recurrence of Bladder Tumor. Urology 2009. [DOI: 10.1016/j.urology.2009.07.779] [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: 11/28/2022]
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94
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Xia Q, Jiang S, Zhao Y, Sun P, Jin X, Wei C, Zhang Q. MP-04.15: Laparoscopic Cyst Decortication with Capsule Exfoliation in Polycystic Kidney Disease. Urology 2009. [DOI: 10.1016/j.urology.2009.07.1037] [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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95
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Huang L, Cheng T, Xu P, Duan J, Fang T, Xia Q. Immunoglobulin superfamily is conserved but evolved rapidly and is active in the silkworm, Bombyx mori. Insect Mol Biol 2009; 18:517-530. [PMID: 19604311 DOI: 10.1111/j.1365-2583.2009.00896.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Immunoglobulin superfamily (IgSF) proteins are known for their abilities to specifically recognize and adhere to cells. In this paper, we predicted the presence of 133 IgSF proteins in the silkworm (Bombyx mori) genome. Comparison with similar proteins in other model organisms (Caenorhabditis elegans, Drosophila melanogaster, Anopheles gambiae, Apis mellifera and Homo sapiens) indicated that IgSF proteins are conserved but have rapidly evolved from worms to human beings. However, these proteins are well conserved amongst insects. Silkworm microarray-based expression data showed tissue expression of 57 IgSF genes and microbe-induced differential expression of 37 genes. Based on the expression data, we can conclude that the silkworm IgSF is active.
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Affiliation(s)
- L Huang
- Institute of Sericulture and Systems Biology, Southwest University, Chongqing, China.
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96
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Wang B, Qu Q, Xia Q, Wu Y, Li X, Gan C, van Ree T. Effects of 3,5-bis(trifluoromethyl)benzeneboronic acid as an additive on electrochemical performance of propylene carbonate-based electrolytes for lithium ion batteries. Electrochim Acta 2008. [DOI: 10.1016/j.electacta.2008.06.070] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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97
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Abstract
All-Trans Retinoic Acid (ATRA) nanosuspensions were prepared with a modified precipitation method. The ATRA solution in acetone was injected into pure water by an air compressor under the action of ultrasonication. Photon correlation spectroscopy results showed that the mean particle size of ATRA nanoparticles in nanosuspensions reduced from 337 nm to 155 nm as the injection velocity increased and the polydispersity index was 0.45-0.50. The morphology of ATRA nanoparticles varied with the different concentration of ATRA solution in acetone. ATRA nanoparticles showed an amorphous state and stable in 6 months. It could be concluded that this modified precipitation method could produce stable and controllable ATRA nanosuspension to a certain extent, thus benefit for higher saturation solubility.
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Affiliation(s)
- X Zhang
- State Key Laboratory of Bioelectronics, Jiangsu Key Laboratory of Biomaterials and Devices, Southeast University, Nanjing, China
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98
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Akerley WL, Langer CJ, Oh Y, Strickland DK, Royer SJ, Xia Q, Mu Y, Huang J, Socinski MA. Acceptable safety of bevacizumab therapy in patients with brain metastases due to non-small cell lung cancer. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.8043] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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99
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Abstract
We have previously reported that metabolism of a series of pyrrolizidine alkaloids in vitro and in vivo generated a set of (+/−)6,7-dihydro-7-hydroxy-1-hydroxymethyl-5H-pyrrolizine (DHP)-derived DNA adducts. It has also been shown that the levels of the DHP-derived DNA adduct formation correlated closely with the tumorigenic potencies of the mice fed with different doses of riddelliine. Retronecine is the necine base and the structurally smallest chemical of the retronecine-type pyrrolizidine alkaloids. Although it has been reported that microsomal metabolism of retronecine generated DHP as a metabolite, it was yet not known whether metabolism of retronecine in vivo could generate DHP-derived DNA adducts and if formed, whether or not the levels of DNA adducts were comparable with those formed from the other tumorigenic retronecine-type pyrrolizidine alkaloids, such as riddelliine, retrorsine, and monocrotaline. In this investigation, the in-vitro and in-vivo metabolic activation of retronecine was studied. Rat liver microsomal metabolism of retronecine in the presence of calf thymus DNA resulted in the formation of a set of DHP–DNA adducts. The metabolism of retronecine N-oxide under similar conditions also formed the similar set of DHP–DNA adducts. The level of DNA adducts from retronecine was enhanced when metabolism by liver microsomes from phenobarbital (PB)-induced rats were used. The DHP–DNA adducts were also found in the liver DNA of female F344 rats treated with retronecine or retronecine N-oxide. The highest level of the total DHP–DNA adducts was found in liver DNA from the rats treated with dehydroretronecine (DHR). The order of the levels of DNA adducts in the liver DNA samples from rats treated with various pyrrolizidine alkaloids was: DHR > riddelliine > riddelliine N-oxide >> retronecine > retronecine N-oxide. The results indicate that 1) retronecine can be metabolized to form DHP by rat liver microsomal enzymes and interacts with DNA to produce DHP–DNA adducts and 2) retronecine N-oxide undergoes the biotransformation to the parent compound, retronecine. The results from this and our previous findings strongly suggest that formation of DHP–DNA adducts may be a potential biomarker for pyrrolizidine alkaloid carcinogenesis.
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Affiliation(s)
- J Yan
- Division of Biochemical Toxicology, National Center for Toxicological Research, Jefferson, Arkansas, USA
| | - Q Xia
- Division of Biochemical Toxicology, National Center for Toxicological Research, Jefferson, Arkansas, USA
| | - MW Chou
- Division of Biochemical Toxicology, National Center for Toxicological Research, Jefferson, Arkansas, USA
| | - PP Fu
- Division of Biochemical Toxicology, National Center for Toxicological Research, Jefferson, Arkansas, USA
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100
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Sheng R, Xu Y, Weng QJ, Xia Q, He QJ, Yang B, Hu YZ. Synthesis and cytotoxic activity of 3-phenyl-2-thio-quinoxaline 1,4-dioxide derivatives in hypoxia and in normoxia. Drug Discov Ther 2007; 1:119-123. [PMID: 22504397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A series of novel 3-phenyl-2-ethylthio/ethylsulfinyl/ethylsulfonyl/phenylthio/ phenylsulfonyl-quinoxaline 1,4-dioxide derivatives were synthesized and screened for their cytotoxicity in vitro on human leukaemia cell line HL-60, human esophagus cancer cell line ECA-109, human prostate cancer cell line PC-3, human gastric carcinoma cell line SGC-7901, and human breast cancer cell line MCF-7 in hypoxia and in normoxia. Half of tested compounds showed higher cytotoxic activity both in hypoxia and in normoxia. The mechanism of one potent compound, 67, in hypoxia showed that the mitochondria pathway is involved in the antitumor activity of this class of compounds.
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Affiliation(s)
- R Sheng
- Institute of Pharmacology and Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
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