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Jiao Y, Jiang YH, Liu B, Mi RH, Bi LJ, Xu QX. [Analysis of the clinical characteristics of acute myeloid leukemia related to the treatment of hematological and solid tumors]. Zhonghua Zhong Liu Za Zhi 2024; 46:86-95. [PMID: 38246784 DOI: 10.3760/cma.j.cn112152-20231024-00249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/23/2024]
Abstract
Objective: To compare and analyze the clinical characteristics of acute myeloid leukemia (AML) related to the treatment of hematological tumors and solid tumors. Methods: The laboratory and clinical data of 41 patients with treatment-related AML (t-AML) in the Department of Hematology, Henan Cancer Hospital from January 2014 to December 2021 were retrospectively analyzed, and they were divided into hematological tumor group and solid tumor group. Survival analysis was performed using the Kaplan-Meier method and Log rank test. Results: The median interval from the first tumor diagnosis to t-AML in 41 patients was 21.0 (16.5-46.0) months; 24 (58.5%) had abnormal expression of lymphoid antigen, 28 (68.3%) had abnormal karyotype, 18 cases (43.9%) were positive for fusion gene, and 28 cases (68.3%) were positive for gene mutation; the median recurrence-free survival (RFS) was 11.0 months, and the median overall survival (OS) was 11.5 months. The proportion of acute promyelocytic leukemia ([APL], 0.0, 0/13), complete response ([CR],18.2%, 2/11), median OS (4.5 months) and median RFS (2.5 months) of t-AML patients in the hematological tumor group were significantly lower than those in the solid tumor group (35.7%, 10/28; 68.0%, 17/25; not reach; not reach), but the proportion of M4 /M5 (93.2%,12/13) was significantly higher than that in the solid tumor group (53.6%,15/18; all P values<0.05). Through subgroup analysis, the proportion of patients with positive PML-RARa and good prognosis karyotypes in the solid tumor group (35.7%, 10/28; 46.4%, 13/28) was significantly higher than that in the hematological tumor group (0.0, 0/13; 0.0, 0/13; P<0.05), while the proportion of patients with intermediate karyotypes (42.9%, 12/28) was significantly lower than that in the hematological tumor group (84.6%, 11/13; P<0.05), the difference was statistically significant. The CR rate (90.0%, 9/10), median OS (not reach) and median RFS (not reach) in the t-APL group were higher than those in the t-AML (without t-APL) group (38.5%, 10/26; 6 months; 8 months; P<0.05). After excluding the effect of t-APL patients, there was no significant difference in the CR rate, median OS and median RFS between the solid tumor group (8; 9 months; not reach) and the hematological tumor group (2; 4 months; 2 months; P>0.05). Univariate analysis showed that the primary tumor belongs to hematological tumor was a common risk factor for OS and RFS in t-AML patients (P<0.10). Conclusions: Compared with patients with t-AML secondary to solid tumors, patients with t-AML secondary to hematological tumors have poorer treatment effects and poorer prognosis. After excluding the effect of t-APL patients, there are no significant differences in the treatment efficacy and prognosis between the two types of t-AML patients.
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Affiliation(s)
- Y Jiao
- Department of Clinical Laboratory, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou Key Laboratory of Digestive Tumor Markers, Zhengzhou 450008, China
| | - Y H Jiang
- Department of Clinical Laboratory, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou Key Laboratory of Digestive Tumor Markers, Zhengzhou 450008, China
| | - B Liu
- Department of Clinical Laboratory, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou Key Laboratory of Digestive Tumor Markers, Zhengzhou 450008, China
| | - R H Mi
- Department of Hematology, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou 450008, China
| | - L J Bi
- Key Laboratory of RNA Biology, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
| | - Q X Xu
- Department of Clinical Laboratory, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou Key Laboratory of Digestive Tumor Markers, Zhengzhou 450008, China
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Li HQ, Xia LJ, Jiang YH, Liu L, Xing XF, Tao R, Ma SH. [Efficacy and safety of pulsed radiofrequency combined with gabapentin in the treatment of acute herpetic neuralgia]. Zhonghua Yi Xue Za Zhi 2023; 103:3954-3958. [PMID: 38129173 DOI: 10.3760/cma.j.cn112137-20230921-00517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
Objective: To explore the clinical efficacy and safety of pulsed radiofrequency (PRF) combined with gabapentin in the treatment of acute herpetic neuralgia (AHN). Methods: A total of 123 AHN patients were retrospectively selected in Henan Provincial People's Hospital from November 2019 to July 2022, who were divided into two groups based on treatment methods: control group (treated with gabapentin, n=61) and study group (treated with gabapentin and PRF, n=62). The visual analog scale (VAS) was utilized for pain severity assessment and the self-rating scale for sleep (SRSS) was utilized for sleep quality evaluation. The differences in serum levels of interleukin (IL)-10, chemokine ligand 10 (CXCL-10), prostaglandin E2 (PGE2), cyclooxygenase-2 (COX-2), IL-2 and IL-6 before and after treatment were compared between the two groups. The overall treatment effectiveness and the occurrence rates of postherpetic neuralgia and adverse reactions were evaluated in both groups. Results: Among the study group patients, 28 were male and 34 were female, and the age was (62.8±8.5) years. Among the control group patients, 35 were male and 26 were female, and the age was (64.0±7.8) years. The VAS scores of the study group before and after treatment were 7.96±1.33 and 1.52±0.60, respectively, while the control group were 7.68±1.52 and 2.70±0.64. The SRSS scores before and after treatment in the study group were 31.74±5.90 and 12.06±2.81, respectively, while those in the control group were 33.10±5.54 and 14.14±2.96, respectively. Before treatment, there were no statistically differences of the VAS scores and SRSS scores in both groups (all P>0.05). After treatment, the VAS scores and SRSS scores in both groups decreased compared with before treatment (all P<0.05), the study group's VAS scores and SRSS scores were lower than those in the control group (all P<0.05). Before treatment, there were no statistically differences of the serum levels of IL-10, CXCL-10, PGE2, COX-2, IL-2 and IL-6 in both groups (all P>0.05). After treatment, the serum levels of IL-10, CXCL-10, PGE2, COX-2 and IL-6 in both groups decreased compared with before treatment, while the IL-2 level increased. Additionally, the study group had lower serum levels of IL-10, PGE2, COX-2 and IL-6 compared with the control group (all P<0.05). After treatment, the study group had 35 cases of cure, 26 cases of effectiveness, and 1 case of ineffectiveness, while the control group had 22 cases of cure, 31 cases of effectiveness, and 8 cases of ineffectiveness. The overall treatment efficacy of the study group was better than that of the control group (P=0.012). The incidence of postherpetic neuralgia in the study group after treatment was 16.1% (10/62), which was lower than that in the control group, which was 37.7% (23/61) (P<0.05). There were no statistically differences of the occurrence rates of adverse reactions in both groups (all P>0.05). Conclusion: Combining PRF with gabapentin for the treatment of AHN demonstrates better overall efficacy and safety, which can more effectively alleviate pain, improve sleep, and reduce inflammatory cytokine levels.
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Affiliation(s)
- H Q Li
- Department of Pain, Henan Provincial People's Hospital, Zhengzhou 450003, China
| | - L J Xia
- Department of Pain, Henan Provincial People's Hospital, Zhengzhou 450003, China
| | - Y H Jiang
- Department of Pain, Henan Provincial People's Hospital, Zhengzhou 450003, China
| | - L Liu
- Department of Pain, Henan Provincial People's Hospital, Zhengzhou 450003, China
| | - X F Xing
- Department of Pain, Henan Provincial People's Hospital, Zhengzhou 450003, China
| | - R Tao
- Department of Pain, Henan Provincial People's Hospital, Zhengzhou 450003, China
| | - S H Ma
- Department of Pain, Henan Provincial People's Hospital, Zhengzhou 450003, China
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Li HQ, Jiang YH, Liu L, Xing XF, Wang J, Ma SH, Xia LJ. [Efficacy and safety of high-voltage pulsed radiofrequency combined with pregabalin on severe thoracic postherpetic neuralgia]. Zhonghua Yi Xue Za Zhi 2023; 103:2440-2444. [PMID: 37599219 DOI: 10.3760/cma.j.cn112137-20230113-00077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 08/22/2023]
Abstract
Objective: To investigate the efficacy and safety of high-voltage pulse radiofrequency combined with pregabalin on severe thoracic postherpetic neuralgia (PHN). Methods: A total of 103 patients with PHN who were admitted to the Department of Pain Medicine of Henan Provincial People's Hospital from May 2020 to May 2022 were retrospectively selected, including 50 males and 53 females, and aged 40 to 79 (65.4±9.2) years. The patients were divided into two groups according to the treatment methods they received: the control group (n=51) and the study group (n=52). The patients in the control group were treated with oral pregabalin, and the patients in the study group received pregabalin plus high-voltage pulse radiofrequency therapy. The pain intensity and efficacy of the two groups were evaluated before treatment and 4 weeks after treatment. The pain intensity, the sleep quality and the efficacy of treatment was evaluated by visual analogue scale (VAS) score, Pittsburgh Sleep Quality Index (PSQI) score and nimodipine method, respectively. The levels of pain mediators including serum neuropeptide Y (NPY), prostaglandin E2 (PGE2), substance P (SP) and β-endorphin were measured. The differences of the above indicators and the incidence of adverse reactions were compared between the two groups. Results: The VAS scores of the study group and the control group before treatment were 7.94±0.76 and 8.20±0.81, and PSQI scores were 16.84±3.90 and 16.29±3.84, respectively, with no statistically significant differences (both P>0.05). After 4 weeks of treatment, the VAS scores of the two groups were 2.84±0.80 and 3.35±0.87, and PSQI scores were 6.78±1.90 and 7.98±2.40, respectively, and the VAS score and PSQI score in the study group were lower than those in the control group (both P<0.05). There were no significant differences of the serum levels of NPY, PGE2, SP and β-endorphin before treatment in the study group and control group (all P>0.05). After 4 weeks of treatment, the levels of NPY, PGE2, SP and β-Endorphin in the study group were (240.7±26.8) ng/L, (74.4±8.6) μg/L, (108.9±15.7) ng/L and (4.4±0.9) ng/L, which were lower than those in the control group [(268.1±29.4) ng/L, (79.7±8.3) μg/L, (115.2±16.2) ng/L, (5.2±1.3) ng/L, respectively], with statistically significant differences (all P<0.05). After treatment, 29 cases were cured, 16 cases were markedly effective and 6 cases were effective in the study group, while 16 cases, 24 cases and 8 cases were cured, markedly effective and effective in the control group, respectively. The overall efficacy of patients in the study group was better than that in the control group (Z=-2.32, P=0.018). The incidence of adverse reactions in the study group and control group was 11.5% (6/52) and 7.8% (4/51), respectively, with no statistically significant difference (χ2=0.40, P=0.527). Conclusion: High-voltage pulse radiofrequency combined with pregabalin can significantly improve the pain intensity and sleep quality of patients with severe thoracic PHN and reduce the levels of pain mediators, with a high safety profile.
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Affiliation(s)
- H Q Li
- Department of Pain Medicine, Henan Provincial People's Hospital, Zhengzhou 450003, China
| | - Y H Jiang
- Department of Pain Medicine, Henan Provincial People's Hospital, Zhengzhou 450003, China
| | - L Liu
- Department of Pain Medicine, Henan Provincial People's Hospital, Zhengzhou 450003, China
| | - X F Xing
- Department of Pain Medicine, Henan Provincial People's Hospital, Zhengzhou 450003, China
| | - J Wang
- Department of Pain Medicine, Henan Provincial People's Hospital, Zhengzhou 450003, China
| | - S H Ma
- Department of Pain Medicine, Henan Provincial People's Hospital, Zhengzhou 450003, China
| | - L J Xia
- Department of Pain Medicine, Henan Provincial People's Hospital, Zhengzhou 450003, China
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Liu XY, Shen L, Dai XY, Jin W, Yan F, Jiang YH, Wang B, Xu F, Liu QB, Yao L. [Chest hemorrhage after left total pulmonary resection for secondary rifampin-resistant tuberculosis:a case report]. Zhonghua Jie He He Hu Xi Za Zhi 2023; 46:806-810. [PMID: 37536991 DOI: 10.3760/cma.j.cn112147-20230516-00241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 08/05/2023]
Abstract
The patient had received five courses of anti-tuberculosis treatment for recurrent tuberculosis. The drug sensitivity test results of the first three courses showed drug-sensitive pulmonary tuberculosis, and the fourth diagnosis was rifampin-resistant tuberculosis (RR-TB), complicated by chronic obstructive pulmonary disease, type Ⅱ respiratory failure, pulmonary heart disease, and heart failure (grade Ⅲ). The patient stopped taking the anti-tuberculosis drugs on his own in the eighth month of receiving the resistant treatment. After admission, the symptoms improved temporarily after receiving oxygen therapy, anti-infection, and anti-tuberculosis treatment. Because of hemoptysis, the patient underwent arterial embolization by catheterization, but a large amount of hemoptysis occurred shortly thereafter. Emergency left total lung resection and gauze packing for hemostasis were performed. After surgery, the patient's vital signs were maintained with mechanical ventilation and vasopressors. Forty-eight hours after surgery, the gauze was removed, and the patient underwent tracheotomy, enteral nutrition, and anti-tuberculosis treatment. After discharge, the patient underwent rehabilitative exercise and anti-resistant tuberculosis therapy. The patient's condition remained stable for more than six months of follow-up.
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Affiliation(s)
- X Y Liu
- Department of Thoracic Surgery, Wuhan Pulmonary Hospital, Wuhan 430030, China
| | - L Shen
- Department of Thoracic Surgery, Wuhan Pulmonary Hospital, Wuhan 430030, China
| | - X Y Dai
- Department of Thoracic Surgery, Wuhan Pulmonary Hospital, Wuhan 430030, China
| | - W Jin
- Tuberculosis Ⅳ Ward, Wuhan Pulmonary Hospital, Wuhan 430030, China
| | - F Yan
- Department of Anesthesiology, Wuhan Pulmonary Hospital, Wuhan 430030, China
| | - Y H Jiang
- Department of Thoracic Surgery, Wuhan Pulmonary Hospital, Wuhan 430030, China
| | - B Wang
- Department of Thoracic Surgery, Wuhan Pulmonary Hospital, Wuhan 430030, China
| | - F Xu
- Department of Thoracic Surgery, Wuhan Pulmonary Hospital, Wuhan 430030, China
| | - Q B Liu
- Department of Thoracic Surgery, Wuhan Pulmonary Hospital, Wuhan 430030, China
| | - L Yao
- Department of Thoracic Surgery, Wuhan Pulmonary Hospital, Wuhan 430030, China
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Liu S, Han X, Ophus C, Zhou S, Jiang YH, Sun Y, Zhao T, Yang F, Gu M, Tan YZ, Sun SG, Zheng H, Liao HG. Observing ion diffusion and reciprocating hopping motion in water. Sci Adv 2023; 9:eadf8436. [PMID: 37506205 PMCID: PMC10381929 DOI: 10.1126/sciadv.adf8436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Accepted: 06/26/2023] [Indexed: 07/30/2023]
Abstract
When an ionic crystal dissolves in solvent, the positive and negative ions associated with solvent molecules release from the crystal. However, the existing form, interaction, and dynamics of ions in real solution are poorly understood because of the substantial experimental challenge. We observed the diffusion and aggregation of polyoxometalate (POM) ions in water by using liquid phase transmission electron microscopy. Real-time observation reveals an unexpected local reciprocating hopping motion of the ions in water, which may be caused by the short-range polymerized bridge of water molecules. We find that ion oligomers, existing as highly active clusters, undergo frequent splitting, aggregation, and rearrangement in dilute solution. The formation and dissociation of ion oligomers indicate a weak counterion-mediated interaction. Furthermore, POM ions with tetrahedral geometry show directional interaction compared with spherical ions, which presents structure-dependent dynamics.
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Affiliation(s)
- Sangui Liu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Xinbao Han
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
- College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Colin Ophus
- National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Shiyuan Zhou
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - You-Hong Jiang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Yue Sun
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Tiqing Zhao
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Fei Yang
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Meng Gu
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Yuan-Zhi Tan
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Shi-Gang Sun
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Haimei Zheng
- Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
- Department of Materials Science and Engineering, University of California, Berkeley, CA 94720, USA
| | - Hong-Gang Liao
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
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Li HQ, Jiang YH, Liu L, Xing XF, Wang J, Ma SH, Xia LJ. [Efficacy and safety of high-voltage pulsed radiofrequency combined with pregabalin on severe thoracic postherpetic neuralgia]. Zhonghua Yi Xue Za Zhi 2023; 103:1931-1935. [PMID: 37402675 DOI: 10.3760/cma.j.cn112137-20221117-02418] [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: 07/06/2023]
Abstract
Objective: To investigate the efficacy and safety of high-voltage pulse radiofrequency combined with pregabalin on severe thoracic postherpetic neuralgia (PHN). Methods: A total of 103 patients with PHN who were admitted to the Department of Pain Medicine of Henan Provincial People's Hospital from May 2020 to May 2022 were retrospectively selected, including 50 males and 53 females, and aged 40 to 79 (65.4±9.2) years. The patients were divided into two groups according to the treatment methods they received: the control group (n=51) and the study group (n=52). The patients in the control group were treated with oral pregabalin, and the patients in the study group received pregabalin plus high-voltage pulse radiofrequency therapy. The pain intensity and efficacy of the two groups were evaluated before treatment and 4 weeks after treatment. The pain intensity, the sleep quality and the efficacy of treatment was evaluated by visual analogue scale (VAS) score, Pittsburgh Sleep Quality Index (PSQI) score and nimodipine method, respectively. The levels of pain factors including serum neuropeptide Y (NPY), prostaglandin E2 (PGE2), substance P (SP) and β-Endorphin were measured. The differences of the above indicators and the incidence of adverse reactions were compared between the two groups. Results: The VAS scores and PSQI scores of the study group and the control group before treatment were (7.94±0.76), (8.20±0.81), (16.84±3.90) and (16.29±3.84), respectively, with no statistically significant difference (both P>0.05). After 4 weeks of treatment, the VAS scores and PSQI scores of the two groups were (2.84±0.80), (3.35±0.87), (6.78±1.90) and (7.98±2.40), respectively, and the VAS score and PSQI score in the study group were lower than those in the control group (both P<0.05). Serum levels of NPY, PGE2, SP and β-Endorphin were (298.5±31.0) ng/L, (92.3±11.0) μg/L, (156.8±21.4) ng/L, and (8.6±1.6) ng/L in the study group and (304.2±28.6) ng/L, (94.4±12.9) μg/L, (152.7±23.8) ng/L and (8.2±1.8) ng/L in the control group, with no significant differences (all P>0.05). After 4 weeks of treatment, levels of NPY, PGE2, SP and β-Endorphin were (240.7±26.8) ng/L, (74.4±8.6) μg/L, (108.9±15.7) ng/L and (4.4±0.9) ng/L, which were lower than those in the control group [(268.1±29.4) ng/L, (79.7±8.3) μg/L, (115.2±16.2) ng/L, (5.2±1.3) ng/L, respectively], with statistically significant differences (all P<0.05). After treatment, 29 cases were cured, 16 cases were markedly effective and 6 cases were effective in the study group, while 16 cases, 24 cases and 8 cases were cured, markedly effective and effective in the control group. The overall efficacy of patients in the study group was better than that in the control group (Z=-2.32, P=0.018). The incidence of adverse reactions in the study group and control group was 11.5% (6/52) and 7.8% (4/51), respectively, with no statistically significant difference (χ2=0.40, P=0.527). Conclusion: High-voltage pulse radiofrequency combined with pregabalin can significantly improve the pain and sleep quality of patients with severe thoracic PHN and reduce the level of pain factors, with a high safety profile.
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Affiliation(s)
- H Q Li
- Department of Pain Medicine, Henan Provincial People's Hospital, Zhengzhou 450003, China
| | - Y H Jiang
- Department of Pain Medicine, Henan Provincial People's Hospital, Zhengzhou 450003, China
| | - L Liu
- Department of Pain Medicine, Henan Provincial People's Hospital, Zhengzhou 450003, China
| | - X F Xing
- Department of Pain Medicine, Henan Provincial People's Hospital, Zhengzhou 450003, China
| | - J Wang
- Department of Pain Medicine, Henan Provincial People's Hospital, Zhengzhou 450003, China
| | - S H Ma
- Department of Pain Medicine, Henan Provincial People's Hospital, Zhengzhou 450003, China
| | - L J Xia
- Department of Pain Medicine, Henan Provincial People's Hospital, Zhengzhou 450003, China
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Jiang YH, Shen L, Liu QB, Dai XY, Sheng J, Liu XY. [Evaluation of uniportal video-assisted thoracoscopic decortication in treatment of drug-resistant tuberculous empyema]. Zhonghua Wai Ke Za Zhi 2023; 61:156-161. [PMID: 36720626 DOI: 10.3760/cma.j.cn112139-20220519-00231] [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: 02/02/2023]
Abstract
Objective: To examine the safety and efficacy of the uniportal video-assisted thoracoscopic decortication in treatment of drug-resistant tuberculosis empyema. Methods: From January 2018 to December 2020, 122 cases of tuberculous empyema treated by decortication in Department of Surgery, Wuhan Pulmonary Hospital were retrospectively analyzed, including 100 males and 22 females, aged(M(IQR)) 29.5(28.0) years (range: 13 to 70 years). According to the surgical approach and drug resistance, patients with drug-resistant tuberculosis who underwent uniportal video-assisted thoracoscopic decortication were included in group A (n=22), and those who underwent thoracotomy decortication were included in group B (n=28). Drug-sensitive patients who underwent uniportal video-assisted thoracoscopic decortication were included in group C (n=72). There was no statistical difference in the baseline data of the three groups (P>0.05). The operation, early postoperative recovery, and prognosis-related indicators were compared among three groups by Kruskal-Wallis test and χ2 test by Mann-Whitney U test and Bonferroni method between groups A and B, groups A and C. Results: The intraoperative blood loss of group A, group B, and group C was 200(475) ml, 300(200) ml, and 225(300) ml, respectively. There was no significant difference in intraoperative hemorrhage (H=2.74, P=0.254) and treatment outcome (χ2=4.76, P=0.575) among the three groups. Compared with group B, the operation time of group A (302.5(187.5) minutes vs. 200.0(60.0) minutes, U=171.0, P=0.007) and postoperative pulmonary reexpansion duration (4.5(3.0) months vs. 3.0 (2.2) months, U=146.5, P=0.032) were longer, and the postoperative drainage duration (9.5(7.8) days vs. 13.0(10.0) days, U=410.0, P=0.044), and the postoperative hospitalization time (12.0(7.8) days vs. 14.5(4.8) days, U=462.2, P=0.020) were shorter. There was no significant difference in complications between group A and group B (63.6%(14/22) vs. 71.4%(20/28), χ2=0.34, P=0.558). Compared with group C, the postoperative drainage duration of group A (9.5(7.8) days vs. 7.0(4.0) days, U=543.5, P=0.031), the postoperative hospitalization time (12.0(7.8) days vs. 9.0(4.0) days, U=533.0, P=0.031) and postoperative pulmonary reexpansion duration (4.5(3.0) months vs. 3.0(2.0) months, U=961.5, P=0.001) were longer. The operation time (302.5(187.5) minutes vs. 242.5(188.8) minutes, U=670.5, P=0.278), and complications (63.6%(14/22) vs. 40.3%(29/72), χ2=3.70, P=0.054) were not different between group A and group C. Conclusions: For drug-resistant tuberculous empyema, the uniportal video-assisted thoracoscopic decortication can achieve the same good therapeutic effect as drug-sensitive tuberculous empyema, and it is as safe as thoracotomy. At the same time, it has the advantage of minimally invasive and can accelerate the early postoperative recovery of patients.
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Affiliation(s)
- Y H Jiang
- Department of Surgery, Wuhan Pulmonary Hospital, Wuhan Institute for Tuberculosis Control, Wuhan 430030, China
| | - L Shen
- Department of Surgery, Wuhan Pulmonary Hospital, Wuhan Institute for Tuberculosis Control, Wuhan 430030, China
| | - Q B Liu
- Department of Surgery, Wuhan Pulmonary Hospital, Wuhan Institute for Tuberculosis Control, Wuhan 430030, China
| | - X Y Dai
- Department of Surgery, Wuhan Pulmonary Hospital, Wuhan Institute for Tuberculosis Control, Wuhan 430030, China
| | - J Sheng
- Department of Surgery, Wuhan Pulmonary Hospital, Wuhan Institute for Tuberculosis Control, Wuhan 430030, China
| | - X Y Liu
- Department of Surgery, Wuhan Pulmonary Hospital, Wuhan Institute for Tuberculosis Control, Wuhan 430030, China
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Peng X, Zhu FC, Jiang YH, Sun JJ, Xiao LP, Zhou S, Bustillo KC, Lin LH, Cheng J, Li JF, Liao HG, Sun SG, Zheng H. Identification of a quasi-liquid phase at solid-liquid interface. Nat Commun 2022; 13:3601. [PMID: 35739085 PMCID: PMC9226024 DOI: 10.1038/s41467-022-31075-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 05/31/2022] [Indexed: 11/17/2022] Open
Abstract
An understanding of solid–liquid interfaces is of great importance for fundamental research as well as industrial applications. However, it has been very challenging to directly image solid–liquid interfaces with high resolution, thus their structure and properties are often unknown. Here, we report a quasi-liquid phase between metal (In, Sn) nanoparticle surfaces and an aqueous solution observed using liquid cell transmission electron microscopy. Our real-time high-resolution imaging reveals a thin layer of liquid-like materials at the interfaces with the frequent appearance of small In nanoclusters. Such a quasi-liquid phase serves as an intermediate for the mass transport from the metal nanoparticle to the liquid. Density functional theory-molecular dynamics simulations demonstrate that the positive charges of In ions greatly contribute to the stabilization of the quasi-liquid phase on the metal surface. Solid–liquid interfaces are ubiquitous in natural and technological processes, but their imaging at the atomic scale has been challenging. The authors, using liquid-phase transmission electron microscopy, identify a quasi-liquid phase and the mass transport between the surface of In and Sn nanocrystals and an aqueous solution.
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Affiliation(s)
- Xinxing Peng
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.,Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.,National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Fu-Chun Zhu
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - You-Hong Jiang
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Juan-Juan Sun
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Liang-Ping Xiao
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Shiyuan Zhou
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Karen C Bustillo
- National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Long-Hui Lin
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Jun Cheng
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Jian-Feng Li
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Hong-Gang Liao
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
| | - Shi-Gang Sun
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Haimei Zheng
- Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA. .,Department of Material Science and Engineering, University of California, Berkeley, CA, 94720, USA.
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Yang W, Li HY, Wu YF, Mi RJ, Liu WZ, Shen X, Lu YX, Jiang YH, Ma MJ, Shen HY. ac4C acetylation of RUNX2 catalyzed by NAT10 spurs osteogenesis of BMSCs and prevents ovariectomy-induced bone loss. Mol Ther Nucleic Acids 2021; 26:135-147. [PMID: 34513300 PMCID: PMC8413676 DOI: 10.1016/j.omtn.2021.06.022] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 06/25/2021] [Indexed: 12/16/2022]
Abstract
N-acetyltransferase 10 (NAT10) is the key enzyme for N4-acetylcytidine (ac4C) modification of mRNA, which participates in various cellular processes and is related to many diseases. Here, we explore the relationships among osteoblast differentiation, NAT10, and ac4C, and we found that NAT0 expression and the ac4C level of total RNA were decreased in the bone tissues of bilateral ovariectomized (OVX) mice and osteoporosis patients. Adenoviruses overexpressing NAT10 reversed bone loss, and Remodelin, an NAT10 inhibitor, enhanced the loss of bone mass in OVX mice. Moreover, bone marrow-derived mesenchymal stem cells (BMSCs) with low-level ac4C modification formed fewer calcium nodules in vitro with NAT10 silencing, whereas BMSCs with high-level ac4C modification formed more calcium nodules with NAT10 overexpression. Moreover, we demonstrated that the ac4C level of runt-related transcription factor 2 (RUNX2) mRNA was increased after BMSCs were cultured in osteogenic medium (OM) and decreased after NAT10 silencing. The RUNX2 mRNA half-life and protein expression decreased after silencing NAT10 in BMSCs. Therefore, NAT10-based ac4C modification promotes the osteogenic differentiation of BMSCs by regulating the RUNX2 ac4C level. Because abnormal levels of NAT10 are probably one of the mechanisms responsible for osteoporosis, NAT10 is a new potential therapeutic target for this disease.
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Affiliation(s)
- W Yang
- Department of Orthopedics, The Eighth Affiliated Hospital, Sun Yat-sen University, No. 3025, Shennan Middle Road, Futian District, Shenzhen, Guangdong 518033, People's Republic of China
| | - H Y Li
- Department of Orthopedics, The Eighth Affiliated Hospital, Sun Yat-sen University, No. 3025, Shennan Middle Road, Futian District, Shenzhen, Guangdong 518033, People's Republic of China
| | - Y F Wu
- Center for Biotherapy, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen 518033, People's Republic of China
| | - R J Mi
- Center for Biotherapy, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen 518033, People's Republic of China
| | - W Z Liu
- Department of Orthopedics, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, People's Republic of China
| | - X Shen
- Department of Orthopedics, The Eighth Affiliated Hospital, Sun Yat-sen University, No. 3025, Shennan Middle Road, Futian District, Shenzhen, Guangdong 518033, People's Republic of China
| | - Y X Lu
- Center for Biotherapy, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen 518033, People's Republic of China
| | - Y H Jiang
- Department of Orthopedics, The Eighth Affiliated Hospital, Sun Yat-sen University, No. 3025, Shennan Middle Road, Futian District, Shenzhen, Guangdong 518033, People's Republic of China
| | - M J Ma
- Department of Orthopedics, The Eighth Affiliated Hospital, Sun Yat-sen University, No. 3025, Shennan Middle Road, Futian District, Shenzhen, Guangdong 518033, People's Republic of China
| | - H Y Shen
- Department of Orthopedics, The Eighth Affiliated Hospital, Sun Yat-sen University, No. 3025, Shennan Middle Road, Futian District, Shenzhen, Guangdong 518033, People's Republic of China.,Department of Orthopedics, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, People's Republic of China
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10
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Wang Z, Chen YW, Jiang YH, Sun LP, Chen XJ, Tao HL, Dong JZ. [Electrophysiological characteristics and therapeutic efficacy of radiofrequency ablation of focal atrial tachycardia originating from the right atrial appendage during pregnancy]. Zhonghua Xin Xue Guan Bing Za Zhi 2020; 48:859-865. [PMID: 33076624 DOI: 10.3760/cma.j.cn112148-20191104-00683] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To analyze the electrophysiological characteristics and the therapeutic efficacy of irrigated-tip catheter radiofrequency ablation(RFA) without radiation for pregnant women with focal atrial tachycardia(AT) originating from the right atrial appendage (RAA). Methods: Data from 55 women with focal AT, who underwent radiofrequency ablation (RFA) in the First Affiliated Hospital of Zhengzhou University from October 2016 to March 2019, were screened. 2 non-pregnant women with right atrial appendage tachycardia (RAAT) and 4 pregnant women with non-RAAT were excluded. The remaining 49 cases were divided into RAAT during pregnancy group (n=6, including 4 cases of tachycardia-induced cardiomyopathy) and non-pregnant and non-RAAT group (control, n=43). Under the guidance of three-dimensional mapping system, the earliest activation site was identified, RFA with the irrigated catheter without x-ray fluoroscopy was performed in RAAT patients during pregnancy, all patients in control group underwent non-zero-ray ablation. Patients were followed up at 3, 6, 12 months post procedure, and yearly follow up thereafter in outpatient clinic. Electrocardiogram or Holter monitoring was performed during follow up. AT recurrence and surgical complications were recorded during follow up. At 6 months after RFA, echocardiography examination and laboratory examination including N-terminal B-type brain natriuretic peptide measurement were performed in the pregnant patients, delivery results were also recorded in the pregnant patients. The electrophysiological characteristics of RAAT during pregnancy were analyzed, the therapeutic efficacy of RFA was compared between the two groups. Results: This study is a retrospective study. Age ((30.7±6.2)years vs. (57.2±11.7)years), left ventricular ejection fraction ((46.0±12.8)% vs. (60.1±5.9)%), proportions of organic heart disease (0% vs. 58%) were significantly lower in the RAAT patients during pregnancy group than in control group (P<0.05), while proportions of patients with persistent tachycardia (100% vs. 7%), symptoms of chest distress and palpitation (6/6 vs. 49%) and left ventricular ejection farction≤50% (4/6 vs. 9%) were significantly higher in RAAT group than in control group (P<0.05), heart rate was similar between the two groups ((163.7±11.1)beats/minutes vs. (153.7±15.2)beats/minutes, P>0.05). The characteristic P-wave morphology was observed in RAAT patients during pregnancy, i.e, P wave was mostly upright (5/6) in inferior-leads (Ⅱ, Ⅲ, aVF) and in lead I and aVL, deep and wide negative P wave was found in V1 lead (5/6), and gradually became positive from V2-V6. The mean tachycardia cycle length was (361.7±38.5) ms. Three-dimensional mapping showed that the origin points of the 6 RAAT pregnant patients were all scattered in the local region, the local region was ablated accordingly, 2 patients (2/6) received extensive ablation of local areas. Immediate successful rate was similar between the two groups (6/6 vs. 93%). During follow up ((15.3±4.0) months), no complications were observed after RFA, postoperative recurrence rate was similar (1/6 vs. 12%). Uncomplicated delivery was reported in all 6 pregnant RAAT post ablation. Normal cardiac structure and function was observed in the 4 pregnant patients with tachycardia-induced cardiomyopathy post ablation. Compared to pre-ablation phase, reduced left atrial dimension ((30.3±1.3) mm vs. (36.8±6.7) mm, P>0.05), increased left ventricular ejection fraction ((64.0±2.9)% vs. (39.8±10.7)%), reduced left ventricular end-diastolic dimension ((44.8±4.0) mm vs. (60.0±2.9) mm) and reduced N-terminal B-type natriuretic peptide value ((136.2±47.5) ng/L vs. (3 408.4±901.3) ng/L) were observed at 6 months post ablation (P<0.05). Conclusion: The electrophysiological characteristics are suggestive for focal AT originating from RAA during pregnancy. Under the guidance of 3-dimension activation mapping, no fluoroscopic RFA with irrigated-tip catheter is a safe and effective strategy for the treatment of focal RAAT during pregnancy.
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Affiliation(s)
- Z Wang
- Department of Cardiology, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Y W Chen
- Department of Cardiology, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Y H Jiang
- Department of Cardiology, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - L P Sun
- Department of Cardiology, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - X J Chen
- Department of Cardiology, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - H L Tao
- Department of Cardiology, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - J Z Dong
- Department of Cardiology, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
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11
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Zhang K, Zhang Y, Wang X, Shen Z, Yan TM, Jiang YH. Experimental evidence for terahertz emission of continuum electrons in the dual-color laser field. Opt Lett 2020; 45:1838-1841. [PMID: 32236012 DOI: 10.1364/ol.387669] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 02/22/2020] [Indexed: 06/11/2023]
Abstract
Terahertz (THz) wave generation (TWG) in a dual-color laser is investigated with joint measurements between THz and third-harmonic generation, where the relative phase delay of dual-color fields is determined in situ in sub-wavelength accuracy, allowing for the clarification of the TWG mechanism in a direct comparison with various theoretical predictions. The delay- and polarization-dependent experiment validates that the continuum-continuum transition within the escaped electron wavepacket in the single atom gives birth to THz emission, while the bound energetic level does not contribute to TWG. TWG from atoms and molecules would provide an all-optical, vacuum-free, and ultrafast tool to record the spatiotemporal evolution of tunneling electron wavepackets.
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12
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Jiang YH, Jiao Y, Chen GY, Sheng JH, Xu QX. [Parotid mucoepidermoid carcinoma after treatment for acute lymphoblastic leukemia in children]. Zhonghua Er Ke Za Zhi 2019; 57:483-484. [PMID: 31216808 DOI: 10.3760/cma.j.issn.0578-1310.2019.06.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Y H Jiang
- Clinical Laboratory, the Tumor Hospital of Zhengzhou University, Zhengzhou 450008, China
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13
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Shi CY, Mamal ZH, Liu XX, Wu LH, Xia DN, Nie YR, Lai FQ, Duan HW, Xiao ZJ, Jiang YH, Li Y, Xiao Y. [Risk-factor analysis of poor graft function after allogeneic hematopoietic stem cell transplantation for severe aplastic anemia]. Zhonghua Xue Ye Xue Za Zhi 2019; 38:761-766. [PMID: 29081192 PMCID: PMC7348355 DOI: 10.3760/cma.j.issn.0253-2727.2017.09.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
目的 探讨重型再生障碍性贫血(SAA)患者行异基因造血干细胞移植(allo-HSCT)后发生植入功能不良(PGF)的危险因素。 方法 回顾性分析111例行allo-HSCT的SAA患者临床资料及移植情况,采用Cox比例风险模型对可能影响PGF的因素进行单因素及多因素分析。 结果 在111例行allo-HSCT的SAA患者中,共有16例发生了PGF(14.4%)。多因素分析结果显示,非血缘供者(HR=2.656,95%CI 1.204~5.858,P=0.016)及移植前血清铁蛋白浓度(SF)>1 000 µg/L(HR=3.170,95%CI 1.400~7.180,P=0.006)是发生PGF的独立危险因素。 结论 非血缘供者及移植前SF>1 000 µg/L的患者移植后容易发生PGF。
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Affiliation(s)
- C Y Shi
- Department of Hematology, General Hospital of Guangzhou Military Command of PLA, Southern Medical University, Guangzhou 510015, China
| | | | | | | | | | | | | | | | | | | | | | - Yang Xiao
- Department of Hematology, General Hospital of Guangzhou Military Command of PLA, Southern Medical University, Guangzhou 510015, China
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14
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Zhang Y, Yan TM, Jiang YH. Ultrafast Mapping of Coherent Dynamics and Density Matrix Reconstruction in a Terahertz-Assisted Laser Field. Phys Rev Lett 2018; 121:113201. [PMID: 30265110 DOI: 10.1103/physrevlett.121.113201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 07/19/2018] [Indexed: 06/08/2023]
Abstract
A time-resolved spectroscopic protocol exploiting terahertz-assisted photoionization is proposed to reconstruct transient density matrix. Population and coherence elements are effectively mapped onto spectrally separated peaks in photoionization spectra. The beatings of coherence dynamics can be temporally resolved beyond the pulse duration, and the relative phase between involved states is directly readable from the oscillatory spectral distribution. As demonstrated by a photoexcited multilevel open quantum system, the method shows potential applications for subfemtosecond time-resolved measurements of coherent dynamics with free electron lasers and tabletop laser fields.
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Affiliation(s)
- Yizhu Zhang
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
- Center for Terahertz waves and College of Precision Instrument and Optoelectronics Engineering, Key Laboratory of Opto-electronics Information and Technical Science, Ministry of Education, Tianjin University, China
| | - Tian-Min Yan
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Y H Jiang
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- ShanghaiTech University, Shanghai 201210, China
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15
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Mo YX, Jiang YH, Lin JX, Zhou Y, Li JT, Wu QH, Huang L, Liao HG, Sun SG. Sulfur Microspheres Encapsulated in Porous Silver-Based Shell with Superior Performance for Lithium-Sulfur Batteries. ChemElectroChem 2018. [DOI: 10.1002/celc.201800337] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yu-Xue Mo
- College of Energy; Xiamen University; Xiamen 361005 China
| | - You-Hong Jiang
- State Key Lab of Physical Chemistry of Solid Surface, College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 China
| | - Jin-Xia Lin
- College of Energy; Xiamen University; Xiamen 361005 China
| | - Yao Zhou
- College of Energy; Xiamen University; Xiamen 361005 China
| | - Jun-Tao Li
- College of Energy; Xiamen University; Xiamen 361005 China
| | - Qi-Hui Wu
- Department of Materials Chemistry, School of Chemical Engineering and Materials Science; Quanzhou Normal University; Quanzhou 36200 China
| | - Ling Huang
- State Key Lab of Physical Chemistry of Solid Surface, College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 China
| | - Hong-Gang Liao
- State Key Lab of Physical Chemistry of Solid Surface, College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 China
| | - Shi-Gang Sun
- College of Energy; Xiamen University; Xiamen 361005 China
- State Key Lab of Physical Chemistry of Solid Surface, College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 China
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16
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Couturier L, Nosske I, Hu F, Tan C, Qiao C, Jiang YH, Chen P, Weidemüller M. Laser frequency stabilization using a commercial wavelength meter. Rev Sci Instrum 2018; 89:043103. [PMID: 29716314 DOI: 10.1063/1.5025537] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We present the characterization of a laser frequency stabilization scheme using a state-of-the-art wavelength meter based on solid Fizeau interferometers. For a frequency-doubled Ti-sapphire laser operated at 461 nm, an absolute Allan deviation below 10-9 with a standard deviation of 1 MHz over 10 h is achieved. Using this laser for cooling and trapping of strontium atoms, the wavemeter scheme provides excellent stability in single-channel operation. Multi-channel operation with a multimode fiber switch results in fluctuations of the atomic fluorescence correlated to residual frequency excursions of the laser. The wavemeter-based frequency stabilization scheme can be applied to a wide range of atoms and molecules for laser spectroscopy, cooling, and trapping.
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Affiliation(s)
- Luc Couturier
- Hefei National Laboratory for Physical Sciences at the Microscale and Shanghai Branch, University of Science and Technology of China, Shanghai 201315, China
| | - Ingo Nosske
- Hefei National Laboratory for Physical Sciences at the Microscale and Shanghai Branch, University of Science and Technology of China, Shanghai 201315, China
| | - Fachao Hu
- Hefei National Laboratory for Physical Sciences at the Microscale and Shanghai Branch, University of Science and Technology of China, Shanghai 201315, China
| | - Canzhu Tan
- Hefei National Laboratory for Physical Sciences at the Microscale and Shanghai Branch, University of Science and Technology of China, Shanghai 201315, China
| | - Chang Qiao
- Hefei National Laboratory for Physical Sciences at the Microscale and Shanghai Branch, University of Science and Technology of China, Shanghai 201315, China
| | - Y H Jiang
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Peng Chen
- Hefei National Laboratory for Physical Sciences at the Microscale and Shanghai Branch, University of Science and Technology of China, Shanghai 201315, China
| | - Matthias Weidemüller
- Hefei National Laboratory for Physical Sciences at the Microscale and Shanghai Branch, University of Science and Technology of China, Shanghai 201315, China
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17
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Jiang YH, You KY, Bi ZF, Li LT, Mo HQ, Liu YM. [The relationship between the radioresistance of pancreatic cancer cell SW1990 and the induction of the Epithelial-Mesenchymal Transition: an in vitro study]. Zhonghua Yi Xue Za Zhi 2018; 98:939-943. [PMID: 29665670 DOI: 10.3760/cma.j.issn.0376-2491.2018.12.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the relationship between the radioresistance of pancreatic cancer cell SW1990 and the induction of the Epithelial-Mesenchymal Transition (EMT). Methods: The radio-resistant pancreatic cancer cell SW1990-R were established by using the method of radiating pancreatic cancer cell SW1990 step by step and repeatedly. Then the changes of the morphology of the cell was observed by inverted phase contrast microscope, the radioresistance of SW1990-R was detected by colony-forming assay, and the apoptosis rate of the two cell lines after radiation were measured by flow cytometry. Then invasiveness and EMT-related genes was measured by trans-well test and qRT-PCR. Finally, the model of transplanted tumor on nude mouse was used to confirm the relationship between the radioresistance of pancreatic cancer cell SW1990 and the induction of EMT. Results: Compared with SW1990, SW1990-R had a lower radiosensitivity (survival fraction in 2 Gy, SF2: 0.326 3±0.007 3 vs 0.840 8±0.001 9, P<0.05) and lower apoptosis rate[(6.12±1.27) % vs (16.87±1.73)%, P<0.05]. Meanwhile, the invasive ability of SW1990-R were significant higher than that of SW1990 cell. According to the result of both in vivo and in vitro experiment, SW1990-R had a higher expression level of Vimentin and Snail, and lower expression level of E-cadherin when compared with SW1990. Conclusion: Compared with SW1990, the radio-resistant pancreatic cancer cell SW1990-R can induce the Epithelial-mesenchymal transition.
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Affiliation(s)
- Y H Jiang
- Department of Radiotherapy, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China
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18
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Zheng XY, Jiang YH, Zhuang GL, Liu DP, Liao HG, Kong XJ, Long LS, Zheng LS. A Gigantic Molecular Wheel of {Gd140}: A New Member of the Molecular Wheel Family. J Am Chem Soc 2017; 139:18178-18181. [DOI: 10.1021/jacs.7b11112] [Citation(s) in RCA: 174] [Impact Index Per Article: 24.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Xiu-Ying Zheng
- Collaborative
Innovation Center of Chemistry for Energy Materials, State Key Laboratory
of Physical Chemistry of Solid Surface and Department of Chemistry,
College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - You-Hong Jiang
- Collaborative
Innovation Center of Chemistry for Energy Materials, State Key Laboratory
of Physical Chemistry of Solid Surface and Department of Chemistry,
College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Gui-Lin Zhuang
- College
of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - Da-Peng Liu
- Collaborative
Innovation Center of Chemistry for Energy Materials, State Key Laboratory
of Physical Chemistry of Solid Surface and Department of Chemistry,
College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Hong-Gang Liao
- Collaborative
Innovation Center of Chemistry for Energy Materials, State Key Laboratory
of Physical Chemistry of Solid Surface and Department of Chemistry,
College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Xiang-Jian Kong
- Collaborative
Innovation Center of Chemistry for Energy Materials, State Key Laboratory
of Physical Chemistry of Solid Surface and Department of Chemistry,
College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - La-Sheng Long
- Collaborative
Innovation Center of Chemistry for Energy Materials, State Key Laboratory
of Physical Chemistry of Solid Surface and Department of Chemistry,
College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Lan-Sun Zheng
- Collaborative
Innovation Center of Chemistry for Energy Materials, State Key Laboratory
of Physical Chemistry of Solid Surface and Department of Chemistry,
College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
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19
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Meng Q, Zhang Y, Yan TM, Jiang YH. Post-processing phase-correction algorithm in two-dimensional electronic spectroscopy. Opt Express 2017; 25:6644-6652. [PMID: 28381009 DOI: 10.1364/oe.25.006644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In a typical two-dimensional electronic spectroscopy (2DES) experiment, the timing errors of the coherence and emission time when determining the absolute time zeros usually introduce extraneous spectral phase slopes and distort the 2D spectrum. In this work, a phase-correction method that merely relies on the data post-processing algorithm is proposed. The method allows reconstructing the spectrum by simply subtracting the artificial linear spectral-phase slopes from the phase component of the 2D spectrum along both coherence and emission frequency axes. The new method has the advantages of ease of implementation and no need for the supplementary experiments and iterative fitting algorithm as commonly-used phasing methods, which may improve the phasing issue in 2DES and serve as a cross-check of now available phasing methods.
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Zhang Y, Yan TM, Jiang YH. Precise phase determination with the built-in spectral interferometry in two-dimensional electronic spectroscopy. Opt Lett 2016; 41:4134-4137. [PMID: 27607991 DOI: 10.1364/ol.41.004134] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A new method determining the precise phase of pulse sequences in two-dimensional electronic spectroscopy (2DES) is proposed merely using the already built-in spectral interferometry. The approach is easily implemented without the supplementary instrumental construction, only at the expense of a few additional scanning and data-fitting processes. This method is executed with the sample in place, effectively avoiding the phase ambiguities of the beam propagation in samples, thus calibrating the absolute phase at the exact interaction region. The new proposed method is expected to improve the phasing procedure in 2DES in a more convenient way.
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21
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Li YC, Li Z, Li ZW, Jiang YH, Weng BQ, Lin WX. Variations of rhizosphere bacterial communities in tea (Camellia sinensis L.) continuous cropping soil by high-throughput pyrosequencing approach. J Appl Microbiol 2016; 121:787-99. [PMID: 27377624 DOI: 10.1111/jam.13225] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [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: 03/20/2016] [Revised: 06/19/2016] [Accepted: 06/29/2016] [Indexed: 11/30/2022]
Abstract
AIMS The goal was to investigate the dynamics of soil bacterial community in the chronosequence tea orchards. METHOD AND RESULTS In this study, soils from tea orchards with continuously cropping histories for 1, 10 and 20 years were collected for investigating rhizosphere bacterial communities using 454 pyrosequencing. The results indicated that Gammaproteobacteria, Alphaproteobacteria, Acidobacteria and Actinobacteria were the main phyla in the tea orchard soils and accounted for more than 60% of the bacterial sequences. At the genus level, the relative abundance of beneficial bacteria, such as Pseudomonas, Rhodanobacter, Bradyrhizobium, Mycobacterium and Sphingomonas, significantly decreased in the 20-year tea orchard soils. Similar patterns of bacterial community structure were observed between 1-year and 10-year tea orchards, which significantly differed from those of 20-year tea orchards. Redundancy analysis indicated that soil organic carbon and pH showed high correlations (positive or negative) with the majority of the taxa. CONCLUSION Long-term tea cultivation altered the composition and structure of soil bacterial community, which led to the reduction in the beneficial bacteria. SIGNIFICANCE AND IMPACT OF THE STUDY The results can provide clues on how to regulate the soil microbial community and maintain the health of soils in tea orchard systems.
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Affiliation(s)
- Y C Li
- Agroecological Institute, Fujian Agriculture and Forestry University, Fuzhou, China.,Agricultural Ecology Institute, Fujian Academy of Agricultural Sciences, Fuzhou, China
| | - Z Li
- Agroecological Institute, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Z W Li
- Agroecological Institute, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Y H Jiang
- Agroecological Institute, Fujian Agriculture and Forestry University, Fuzhou, China
| | - B Q Weng
- Agricultural Ecology Institute, Fujian Academy of Agricultural Sciences, Fuzhou, China
| | - W X Lin
- Agroecological Institute, Fujian Agriculture and Forestry University, Fuzhou, China
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22
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Ji WH, Jiang YH, Ji YL, Li B, Mao WM. Prechemotherapy neutrophil : lymphocyte ratio is superior to the platelet : lymphocyte ratio as a prognostic indicator for locally advanced esophageal squamous cell cancer treated with neoadjuvant chemotherapy. Dis Esophagus 2016; 29:403-11. [PMID: 25625421 DOI: 10.1111/dote.12322] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The study aimed to evaluate the prognostic significance of prechemotherapy neutrophil to lymphocyte ratio and platelet to lymphocyte ratio, and preoperative neutrophil to lymphocyte ratio and platelet to lymphocyte ratio in locally advanced esophageal squamous cell cancer. We analyzed retrospectively locally advanced esophageal squamous cell cancer patients who had received neoadjuvant chemotherapy before undergoing a radical esophagectomy between 2009 and 2012. Neutrophil to lymphocyte ratio and platelet to lymphocyte ratio before chemotherapy and before the surgery were calculated. Univariate analyses showed that prechemotherapy neutrophil to lymphocyte ratio >5 (P = 0.048, hazard ratio = 2.86; 95% confidence interval: 1.01-8.12) and prechemotherapy platelet to lymphocyte ratio >130 (P = 0.025, hazard ratio = 5.50; 95% confidence interval: 1.23-24.55) were associated significantly with overall survival (OS), and prechemotherapy platelet to lymphocyte ratio >130 (P = 0.026, hazard ratio = 3.18; 95% confidence interval: 1.15-8.85) was associated significantly with progression-free survival. However, only prechemotherapy neutrophil to lymphocyte ratio >5 (P = 0.024, hazard ratio = 3.50; 95% confidence interval: 1.18-10.40) remained significantly associated with OS in multivariate analyses. Neither preoperative neutrophil to lymphocyte ratio nor platelet to lymphocyte ratio was associated with OS or progression-free survival. The prechemotherapy neutrophil to lymphocyte ratio >5 to preoperative neutrophil to lymphocyte ratio ≤5 group showed significantly worse OS than the prechemotherapy neutrophil to lymphocyte ratio ≤5 to preoperative neutrophil to lymphocyte ratio ≤5 group (P = 0.050). The prechemotherapy platelet to lymphocyte ratio >130 to preoperative platelet to lymphocyte ratio ≤130 group (P = 0.016) and platelet to lymphocyte ratio >130 to preoperative platelet to lymphocyte ratio >130 group (P = 0.042) showed significantly worse OS than the prechemotherapy platelet to lymphocyte ratio ≤30 to preoperative platelet to lymphocyte ratio ≤130 group. In conclusions, prechemotherapy neutrophil to lymphocyte ratio is an independent prognostic factor for OS in patients with advanced esophageal squamous cell cancer treated with neoadjuvant chemotherapy, and, as an adverse prognostic predictor, increased prechemotherapy neutrophil to lymphocyte ratio is superior to platelet to lymphocyte ratio. Maintaining a low neutrophil to lymphocyte ratio and platelet to lymphocyte ratio throughout treatment is a predictor of better OS.
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Affiliation(s)
- W H Ji
- Zhejiang Key Laboratory of Radiation Oncology, Zhejiang Cancer Research Institute, Zhejiang Cancer Hospital, Hangzhou, China
| | - Y H Jiang
- Zhejiang Key Laboratory of Radiation Oncology, Zhejiang Cancer Research Institute, Zhejiang Cancer Hospital, Hangzhou, China
| | - Y L Ji
- Zhejiang Key Laboratory of Radiation Oncology, Zhejiang Cancer Research Institute, Zhejiang Cancer Hospital, Hangzhou, China
| | - B Li
- Zhejiang Key Laboratory of Radiation Oncology, Zhejiang Cancer Research Institute, Zhejiang Cancer Hospital, Hangzhou, China
| | - W M Mao
- Zhejiang Key Laboratory of Radiation Oncology, Zhejiang Cancer Research Institute, Zhejiang Cancer Hospital, Hangzhou, China
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Li Y, Tian X, Sui CG, Jiang YH, Liu YP, Meng FD. Interference of lysine-specific demethylase 1 inhibits cellular invasion and proliferation in vivo in gastric cancer MKN-28 cells. Biomed Pharmacother 2016; 82:498-508. [PMID: 27470390 DOI: 10.1016/j.biopha.2016.04.070] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [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: 02/01/2016] [Revised: 04/26/2016] [Accepted: 04/26/2016] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Lysine-specific demethylase 1(LSD1), the first identified histone demethylase, plays an important role in the epigenetic regulation of gene activation and repression. Up-regulated LSD1expression has been reported in several malignant tumors.Our aim, therefore, was to better understand the mechanisms underlying the upregulation of LSD1 in gastric cancer. METHODS We used lentiviral shRNA to knockdown LSD1 in the gastric cancer MKN-28 cell line. Cell proliferation was measured by MTT assay while cell apoptosis was assessed by Annexin V-FITC/PI double staining flow cytometry. The invasive potential of gastric cancer cells was determined by matrigel invasion assay. Protein expression was detected by Western blot. In vivo, the effect of knocking down LSD1 on tumor growth and protein expression in gastric cancer cells in nude mice was investigated. RESULTS LSD1 knockdown in MKN-28 cell lines resulted in increasing the activity of cisplatin in vitro and the inhibition of cancer cell proliferation and invasion, and induced cell apoptosis. The expression of TGF-β1, VEGF, Bcl-2, β-catenin, p-ERK and p-Smad 2/3 proteins was inhibited in LSD1 knockdown cells. Moreover, in an in vivo model of gastric cancer, LSD1 knockdown suppressed tumor growth and protein expression. CONCLUSION LSD1 knockdown affected the fuction of gastric cancer MKN-28 cell line. LSD1 may be a latent target in the diagnosis and therapy of gastric cancer.
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Affiliation(s)
- Yan Li
- Department of Biotherapy, Cancer Research Institute, The First Affiliated Hospital of China Medical University, China
| | - Xin Tian
- Department of Biotherapy, Cancer Research Institute, The First Affiliated Hospital of China Medical University, China
| | - Cheng-Guang Sui
- Department of Biotherapy, Cancer Research Institute, The First Affiliated Hospital of China Medical University, China
| | - You-Hong Jiang
- Department of Biotherapy, Cancer Research Institute, The First Affiliated Hospital of China Medical University, China
| | - Yun-Peng Liu
- Department of Oncology, The First Affiliated Hospital of China Medical University, China
| | - Fan-Dong Meng
- Department of Biotherapy, Cancer Research Institute, The First Affiliated Hospital of China Medical University, China.
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Tian X, Dai Y, Wang DQ, Zhang L, Sui CG, Meng FD, Jiang SY, Liu YP, Jiang YH. Transarterial chemoembolization versus hepatic resection in hepatocellular carcinoma treatment: a meta-analysis. Drug Des Devel Ther 2015; 9:4431-40. [PMID: 26309396 PMCID: PMC4539084 DOI: 10.2147/dddt.s86629] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Background A number of cohort studies have compared the outcomes of transarterial chemoembolization (TACE) and hepatic resection (HR) in the treatment of hepatocellular carcinoma (HCC). However, the effect of TACE versus HR remains controversial. Therefore, we conducted a meta-analysis to assess the effectiveness of TACE and HR in HCC treatment. Materials and methods PubMed, Embase, Web of Science, Scopus, ClinicalTrials.gov, and Cochrane library were searched from their inception until February 27, 2015 for relevant studies. The literature search was updated on May 25, 2015. Eligible studies were cohort studies comparing the survival outcomes between HCC patients undergoing TACE and HR. The primary outcome was overall survival (OS). Secondary outcomes were the recurrence rate and prognostic factors for OS. The risk ratio (RR) was used for the meta-analysis and was expressed with 95% confidence intervals (CIs). Results This meta-analysis included eleven cohort studies with 6,297 patients, all treated with TACE or HR. Pooled estimates showed that, compared with TACE, HR significantly improved the 3-year OS (RR =0.77; 95% CI, 0.63–0.93; P=0.009). TACE and HR had similar effects on OS after 1 year (RR =0.94; 95% CI, 0.86–1.01; P=0.103), 2 years (RR =0.50; 95% CI, 0.21–1.19; P=0.114), 4 years (RR =0.61; 95% CI, 0.58–1.10; P=0.174), and 5 years (RR =0.77; 95% CI, 0.59–1.01; P=0.06). There was no significant difference between the 3-year (RR =1.31; 95% CI, 0.65–2.64; P=0.457) and 5-year recurrence rates (RR =1.14; 95% CI, 0.69–1.89; P=0.597) in the TACE and HR groups. Age (>65 vs ≤65 years; hazard ratio =0.99; 95% CI, 0.98–1.00; P=0.000), sex (male vs female; hazard ratio =0.79; 95% CI, 0.65–0.96; P=0.02), treatment method (TACE vs HR; hazard ratio =1.90; 95% CI, 1.46–2.46; P=0.000), and Eastern Cooperative Oncology Group performance score (≥1 vs 0; hazard ratio =1.69; 95% CI, 1.22–2.33; P=0.002) were independent predictors for OS. Conclusion This meta-analysis suggests that the TACE and HR likely have similar effects in the treatment of HCC patients in terms of OS and recurrence rate. However, this conclusion should be interpreted cautiously due to the presence of further subgroup analyses with respect to outcomes in patients with different liver statuses (Barcelona Clinic Liver Cancer stage A or stage B).
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Affiliation(s)
- Xin Tian
- Molecular Oncology Laboratory of Cancer Research Institute, The First Affiliated Hospital of China Medical University, Shenyang, People's Republic of China
| | - Ying Dai
- Molecular Oncology Laboratory of Cancer Research Institute, The First Affiliated Hospital of China Medical University, Shenyang, People's Republic of China
| | - Da-Qing Wang
- Health and Family Planning Commission of Liaoning Province, People's Republic of China
| | - Li Zhang
- Molecular Oncology Laboratory of Cancer Research Institute, The First Affiliated Hospital of China Medical University, Shenyang, People's Republic of China
| | - Cheng-Guang Sui
- Molecular Oncology Laboratory of Cancer Research Institute, The First Affiliated Hospital of China Medical University, Shenyang, People's Republic of China
| | - Fan-Dong Meng
- Molecular Oncology Laboratory of Cancer Research Institute, The First Affiliated Hospital of China Medical University, Shenyang, People's Republic of China
| | - Shen-Yi Jiang
- Molecular Oncology Laboratory of Cancer Research Institute, The First Affiliated Hospital of China Medical University, Shenyang, People's Republic of China
| | - Yun-Peng Liu
- Molecular Oncology Laboratory of Cancer Research Institute, The First Affiliated Hospital of China Medical University, Shenyang, People's Republic of China
| | - You-Hong Jiang
- Molecular Oncology Laboratory of Cancer Research Institute, The First Affiliated Hospital of China Medical University, Shenyang, People's Republic of China
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25
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Meng FD, Sui CG, Tian X, Li Y, Yang CM, Ma P, Liu YP, Jiang YH. Heat-shock protein 70 as a tumor antigen for in vitro dendritic cell pulsing in renal cell carcinoma cases. Asian Pac J Cancer Prev 2015; 15:8947-50. [PMID: 25374234 DOI: 10.7314/apjcp.2014.15.20.8947] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Immunological functions of heat shock proteins (HSPs) have long been recognized. In this study we aimed to efficiently purify HSP70 from renal cell carcinoma and test it as a tumor antigen for pulsing dendritic cells in vitro. HSP70 was purified from renal cell carcinoma specimens by serial column chromatography on Con A-sepharose, PD-10, ADP-agarose and DEAE-cellulose, and finally subjected to fast protein liquid chromatography (FPLC). Dendritic cells derived from the adherent fraction of peripheral blood mononuclear cells were cultured in the presence of IL-4 and GM-CSF and exposed to tumor HSP70. After 24 hours, dendritic cells were phenotypically characterized by flow cytometry. T cells obtained from the non-adherent fraction of peripheral blood mononuclear cells were then co-cultured with HSP70-pulsed dendritic cells and after 3 days T cell cytotoxicity towards primary cultured renal cell carcinoma cells was examined by Cell Counting Kit-8 assay. Dendritic cells pulsed in vitro with tumor-derived HSP70 expressed higher levels of CD83, CD80, CD86 and HLA-DR maturation markers than those pulsed with tumor cell lysate and comparable to that of dendritic cells pulsed with tumor cell lysate plus TNF-α. Concomitantly, cytotoxic T-lymphocytes induced by HSP70-pulsed dendritic cells presented the highest cytotoxic activity. There were no significant differences when using homologous or autologous HSP70 as the tumor antigen. HSP70 can be efficiently purified by chromatography and induces in vitro dendritic cell maturation in the absence of TNF-α. Conspecific HSP70 may effectively be used as a tumor antigen to pulse dendritic cells in vitro.
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Affiliation(s)
- Fan-Dong Meng
- The Second Lab of Cancer Research Institute, The First Hospital of China Medical University, Shenyang, China E-mail :
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Meng FD, Li Y, Tian X, Ma P, Sui CG, Fu LY, Jiang YH. Synergistic effects of snail and quercetin on renal cell carcinoma Caki-2 by altering AKT/mTOR/ERK1/2 signaling pathways. Int J Clin Exp Pathol 2015; 8:6157-6168. [PMID: 26261493 PMCID: PMC4525827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Accepted: 02/22/2015] [Indexed: 06/04/2023]
Abstract
Renal cell carcinoma has become the most common subtype of kidney cancer, and has the highest propensity to manifest as metastatic disease. Because of lack of knowledge in events that correlated with tumor cell migration and invasion, few therapeutic options are available. Therefore, in current study, we explore the anti-tumoral effect of a potential chemopreventive natural product, quercetin, combined with anti-sense oligo gene therapy (inhibiting Snail gene). We found that either one of them had the remarkable effects in suppressing cell proliferation and migration, inducing cell cycle arrest and apoptosis in a ccRCC cell line, Caki-2 cells. The combination of both means provides even strong suppressive effects toward these ccRCC cells. Our study, for the first time, provides the possibility of using a novel treatment for renal cancer, by combining natural product and gene therapy.
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Affiliation(s)
- Fan-Dong Meng
- Department of Molecular Oncology, Cancer Research Institution, The First Affiliated Hospital of China Medical University Shenyang 110001, Liaoning Province, China
| | - Yan Li
- Department of Molecular Oncology, Cancer Research Institution, The First Affiliated Hospital of China Medical University Shenyang 110001, Liaoning Province, China
| | - Xin Tian
- Department of Molecular Oncology, Cancer Research Institution, The First Affiliated Hospital of China Medical University Shenyang 110001, Liaoning Province, China
| | - Ping Ma
- Department of Molecular Oncology, Cancer Research Institution, The First Affiliated Hospital of China Medical University Shenyang 110001, Liaoning Province, China
| | - Cheng-Guang Sui
- Department of Molecular Oncology, Cancer Research Institution, The First Affiliated Hospital of China Medical University Shenyang 110001, Liaoning Province, China
| | - Li-Ye Fu
- Department of Molecular Oncology, Cancer Research Institution, The First Affiliated Hospital of China Medical University Shenyang 110001, Liaoning Province, China
| | - You-Hong Jiang
- Department of Molecular Oncology, Cancer Research Institution, The First Affiliated Hospital of China Medical University Shenyang 110001, Liaoning Province, China
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27
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Shashi V, McConkie-Rosell A, Schoch K, Kasturi V, Rehder C, Jiang YH, Goldstein DB, McDonald MT. Practical considerations in the clinical application of whole-exome sequencing. Clin Genet 2015; 89:173-81. [PMID: 25678066 DOI: 10.1111/cge.12569] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [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: 01/02/2015] [Revised: 02/04/2015] [Accepted: 02/08/2015] [Indexed: 01/17/2023]
Abstract
Despite the exciting advent of whole-exome sequencing (WES) in medical genetics practices, the optimal interpretation of results requires further actions such as reconsidering clinical information and obtaining further laboratory testing. There are no published data to guide clinicians in this process. In a retrospective study on 93 patients who underwent clinical WES, we set out to assess and resolve these practical challenges. With the laboratories reporting a molecular diagnostic rate of 25.8%, the medical geneticists and the laboratories were 90% concordant in their interpretation of the WES results. Divergence occurred when the medical geneticist reconsidered clinical information and/or additional information regarding pathogenicity of a variant. Variants of uncertain significance were reported in 86% of patients, with 53.7% needing follow-up, such as additional laboratory tests and genotyping of family members. By layering clinical data (e.g. mode of inheritance and phenotypic fit) on to the laboratory results, we developed clinical categories for the WES results. These categories of definite diagnosis (14/93), likely diagnosis (8/93), possible diagnosis (13/93) and no diagnosis (58/93) could be used to convey results to patients uniformly. Our framework for a clinically informed interpretation of the results enhances the utility of WES within medical genetics practices.
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Affiliation(s)
- V Shashi
- Department of Pediatrics, Division of Medical Genetics, Duke University Medical Center, Durham, NC, USA
| | - A McConkie-Rosell
- Department of Pediatrics, Division of Medical Genetics, Duke University Medical Center, Durham, NC, USA
| | - K Schoch
- Department of Pediatrics, Division of Medical Genetics, Duke University Medical Center, Durham, NC, USA
| | - V Kasturi
- Department of Pediatrics, Division of Medical Genetics, Duke University Medical Center, Durham, NC, USA
| | - C Rehder
- Department of Pathology, Duke University Medical Center, Durham, NC, USA
| | - Y H Jiang
- Department of Pediatrics, Division of Medical Genetics, Duke University Medical Center, Durham, NC, USA
| | - D B Goldstein
- Center for Human Genome Variation, Duke University Medical Center, Durham, NC, USA
| | - M T McDonald
- Department of Pediatrics, Division of Medical Genetics, Duke University Medical Center, Durham, NC, USA
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Schnorr K, Senftleben A, Schmid G, Rudenko A, Kurka M, Meyer K, Foucar L, Kübel M, Kling MF, Jiang YH, Düsterer S, Treusch R, Schröter CD, Ullrich J, Pfeifer T, Moshammer R. Multiple ionization and fragmentation dynamics of molecular iodine studied in IR-XUV pump-probe experiments. Faraday Discuss 2014; 171:41-56. [PMID: 25415043 DOI: 10.1039/c4fd00031e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The ionization and fragmentation dynamics of iodine molecules (I(2)) are traced using very intense (∼10(14) W cm(-2)) ultra-short (∼60 fs) light pulses with 87 eV photons of the Free-electron LASer at Hamburg (FLASH) in combination with a synchronized femtosecond optical laser. Within a pump-probe scheme the IR pulse initiates a molecular fragmentation and then, after an adjustable time delay, the system is exposed to an intense FEL pulse. This way we follow the creation of highly-charged molecular fragments as a function of time, and probe the dynamics of multi-photon absorption during the transition from a molecule to individual atoms.
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Affiliation(s)
- K Schnorr
- Max-Planck-Institut für Kernphysik, 69117, Heidelberg, Germany
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Li Y, Meng FD, Tian X, Sui CG, Liu YP, Jiang YH. Impact of IL-2 and IL-2R SNPs on proliferation and tumor- killing activity of lymphokine-activated killer cells from healthy chinese blood donors. Asian Pac J Cancer Prev 2014; 15:7965-70. [PMID: 25292096 DOI: 10.7314/apjcp.2014.15.18.7965] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
One of the goals of tumor immunotherapy is to generate immune cells with potent anti-tumor activity through in vitro techniques using peripheral blood collected from patients. However, cancer patients generally have poor immunological function. Thus using patient T cells, which have reduced in vitro proliferative capabilities and less tumor cell killing activity to generate lymphokine-activated killer (LAK) cells, fails to achieve optimal clinical efficacy. Interleukin-2 (IL-2) is a potent activating cytokine for both T cells and natural killer cells. Thus, this study aimed to identify optimal donors for allogeneic LAK cell immunotherapy based on single nucleotide polymorphisms (SNP) in the IL-2 and IL-2R genes. IL-2 and IL-2R SNPs were analyzed using HRM- PCR. LAK cells were derived from peripheral blood mononuclear cells by culturing with IL-2. The frequency and tumor-killing activity of LAK cells in each group were analyzed by flow cytometry and tumor cell killing assays, respectively. Regarding polymorphisms at IL-2-330 (rs2069762) T/G, LAK cells from GG donors had significantly greater proliferation, tumor-killing activity, and IFN-γ production than LAK cells from TT donors (P<0.05). Regarding polymorphisms at IL-2R rs2104286 A/G, LAK cell proliferation and tumor cell killing were significantly greater in LAK cells from AA donors than GG donors (P<0.05). These data suggest that either IL- 2-330(rs2069762)T/G GG donors or IL-2R rs2104286 A/G AA donors are excellent candidates for allogeneic LAK cell immunotherapy.
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Affiliation(s)
- Yan Li
- Molecular Oncology Department of Cancer Research Institution, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning Province,ChinaE-mail :
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Guo QL, Liang BL, Wang Y, Deng GY, Jiang YH, Zhang SH, Fu GS, Simmonds PJ. Propagation characteristics of a focused laser beam in a strontium barium niobate photorefractive crystal under reverse external electric field. Appl Opt 2014; 53:6422-6426. [PMID: 25322227 DOI: 10.1364/ao.53.006422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2014] [Accepted: 08/15/2014] [Indexed: 06/04/2023]
Abstract
The propagation characteristics of a focused laser beam in a SBN:75 photorefractive crystal strongly depend on the signal-to-background intensity ratio (R=Is/Ib) under reverse external electric field. In the range 20>R>0.05, the laser beam shows enhanced self-defocusing behavior with increasing external electric field, while it shows self-focusing in the range 0.03>R>0.01. Spatial solitons are observed under a suitable reverse external electric field for R=0.025. A theoretical model is proposed to explain the experimental observations, which suggest a new type of soliton formation due to "enhancement" not "screening" of the external electrical field.
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Qi XH, Wu D, Cui HX, Ma N, Su J, Wang YT, Jiang YH. Silencing of the glypican-3 gene affects the biological behavior of human hepatocellular carcinoma cells. Mol Med Rep 2014; 10:3177-84. [PMID: 25270552 DOI: 10.3892/mmr.2014.2600] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2013] [Accepted: 06/05/2014] [Indexed: 11/05/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is one of the leading causes of cancer death in the world. The gene glypican-3 (GPC3) is reported to be a potential therapeutic target for HCC. In this study, we use RNA interference with lentiviral vectors to explore the effect of GPC3 silencing on the biological behavior of HCC cells and the potential role of the GPC3 protein in the activation of epithelial-mesenchymal transition (EMT), which relates to HCC cell invasion and migration. Our data suggest that GPC3 silencing leads to a decrease in HCC cell proliferation and to an increase in apoptosis. We demonstrated that GPC3 silencing regulates cell invasion and migration, most probably through the activation of the EMT cellular program. In conclusion, GPC3 is associated with the HCC cell biological behavior, while the relationship between GPC3 and EMT in tumorigenesis of HCC deserves future investigation.
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Affiliation(s)
- Xin-Hui Qi
- Cancer Research Institute, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Di Wu
- Cancer Research Institute, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Hui-Xia Cui
- Cancer Research Institute, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Nan Ma
- Cancer Research Institute, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Jia Su
- Cancer Research Institute, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Yu-Tong Wang
- Cancer Research Institute, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - You-Hong Jiang
- Cancer Research Institute, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
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Schnorr K, Senftleben A, Kurka M, Rudenko A, Schmid G, Pfeifer T, Meyer K, Kübel M, Kling MF, Jiang YH, Treusch R, Düsterer S, Siemer B, Wöstmann M, Zacharias H, Mitzner R, Zouros TJM, Ullrich J, Schröter CD, Moshammer R. Electron rearrangement dynamics in dissociating I(2)^(n+) molecules accessed by extreme ultraviolet pump-probe experiments. Phys Rev Lett 2014; 113:073001. [PMID: 25170702 DOI: 10.1103/physrevlett.113.073001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2014] [Indexed: 05/11/2023]
Abstract
The charge rearrangement in dissociating I_{2}^{n+} molecules is measured as a function of the internuclear distance R using extreme ultraviolet pulses delivered by the free-electron laser in Hamburg. Within an extreme ultraviolet pump-probe scheme, the first pulse initiates dissociation by multiply ionizing I_{2}, and the delayed probe pulse further ionizes one of the two fragments at a given time, thus triggering charge rearrangement at a well-defined R. The electron transfer between the fragments is monitored by analyzing the delay-dependent ion kinetic energies and charge states. The experimental results are in very good agreement with predictions of the classical over-the-barrier model demonstrating its validity in a thus far unexplored quasimolecular regime relevant for free-electron laser, plasma, and chemistry applications.
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Affiliation(s)
- K Schnorr
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - A Senftleben
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - M Kurka
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - A Rudenko
- J.R. Macdonald Laboratory, Kansas State University, Manhattan, Kansas 66506, USA
| | - G Schmid
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - T Pfeifer
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - K Meyer
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - M Kübel
- Max-Planck-Institut für Quantenoptik, 85748 Garching, Germany
| | - M F Kling
- J.R. Macdonald Laboratory, Kansas State University, Manhattan, Kansas 66506, USA and Max-Planck-Institut für Quantenoptik, 85748 Garching, Germany
| | - Y H Jiang
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - R Treusch
- Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany
| | - S Düsterer
- Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany
| | - B Siemer
- Westfälische Wilhelms-Universität, 48419 Münster, Germany
| | - M Wöstmann
- Westfälische Wilhelms-Universität, 48419 Münster, Germany
| | - H Zacharias
- Westfälische Wilhelms-Universität, 48419 Münster, Germany
| | - R Mitzner
- Helmholtz-Zentrum Berlin, 12489 Berlin, Germany
| | - T J M Zouros
- Department of Physics, University of Crete, Post Office Box 2208, 71003 Heraklion, Crete, Greece
| | - J Ullrich
- Physikalisch-Technische Bundesanstalt, 38116 Braunschweig, Germany
| | - C D Schröter
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - R Moshammer
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
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Tian X, Ma P, Sui CG, Meng FD, Li Y, Fu LY, Jiang T, Wang Y, Jiang YH. Suppression of tumor necrosis factor receptor-associated protein 1 expression induces inhibition of cell proliferation and tumor growth in human esophageal cancer cells. FEBS J 2014; 281:2805-19. [PMID: 24754231 DOI: 10.1111/febs.12822] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2013] [Revised: 04/08/2014] [Accepted: 04/18/2014] [Indexed: 11/28/2022]
Affiliation(s)
- Xin Tian
- Molecular Oncology Department of Cancer Research Institute; the First Affiliated Hospital of China Medical University; Shenyang Liaoning Province China
| | - Ping Ma
- Molecular Oncology Department of Cancer Research Institute; the First Affiliated Hospital of China Medical University; Shenyang Liaoning Province China
| | - Cheng-Guang Sui
- Molecular Oncology Department of Cancer Research Institute; the First Affiliated Hospital of China Medical University; Shenyang Liaoning Province China
| | - Fan-Dong Meng
- Molecular Oncology Department of Cancer Research Institute; the First Affiliated Hospital of China Medical University; Shenyang Liaoning Province China
| | - Yan Li
- Molecular Oncology Department of Cancer Research Institute; the First Affiliated Hospital of China Medical University; Shenyang Liaoning Province China
| | - Li-Ye Fu
- Molecular Oncology Department of Cancer Research Institute; the First Affiliated Hospital of China Medical University; Shenyang Liaoning Province China
| | - Tao Jiang
- Molecular Oncology Department of Cancer Research Institute; the First Affiliated Hospital of China Medical University; Shenyang Liaoning Province China
| | - Yang Wang
- Molecular Oncology Department of Cancer Research Institute; the First Affiliated Hospital of China Medical University; Shenyang Liaoning Province China
| | - You-Hong Jiang
- Molecular Oncology Department of Cancer Research Institute; the First Affiliated Hospital of China Medical University; Shenyang Liaoning Province China
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Li Y, Zhou LP, Ma P, Sui CG, Meng FD, Tian X, Fu LY, Jiang YH. Relationship of PTTG Expression with Tumor Invasiveness and Microvessel Density of Pituitary Adenomas: A Meta-Analysis. Genet Test Mol Biomarkers 2014; 18:279-85. [PMID: 24611443 DOI: 10.1089/gtmb.2013.0447] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Affiliation(s)
- Yan Li
- Molecular Oncology Department of Cancer Research Institution, The First Hospital of China Medical University, Shenyang, People's Republic of China
| | - Li-Ping Zhou
- Department of Laboratory Medicine, The First Hospital of China Medical University, Shenyang, People's Republic of China
| | - Ping Ma
- Molecular Oncology Department of Cancer Research Institution, The First Hospital of China Medical University, Shenyang, People's Republic of China
| | - Cheng-Guang Sui
- Molecular Oncology Department of Cancer Research Institution, The First Hospital of China Medical University, Shenyang, People's Republic of China
| | - Fan-Dong Meng
- Molecular Oncology Department of Cancer Research Institution, The First Hospital of China Medical University, Shenyang, People's Republic of China
| | - Xin Tian
- Molecular Oncology Department of Cancer Research Institution, The First Hospital of China Medical University, Shenyang, People's Republic of China
| | - Li-Ye Fu
- Molecular Oncology Department of Cancer Research Institution, The First Hospital of China Medical University, Shenyang, People's Republic of China
| | - You-Hong Jiang
- Molecular Oncology Department of Cancer Research Institution, The First Hospital of China Medical University, Shenyang, People's Republic of China
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Tian X, Tian Y, Ma P, Sui CG, Meng FD, Li Y, Fu LY, Jiang T, Wang Y, Ji FJ, Fang XD, Jiang YH. Association between MDM2 SNP309 T>G and risk of gastric cancer: a meta-analysis. Asian Pac J Cancer Prev 2014; 14:1925-9. [PMID: 23679294 DOI: 10.7314/apjcp.2013.14.3.1925] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
BACKGROUND As a negative regulator of P53, MDM2 plays an important role in carcinogenesis; a polymorphism in its promoter region. SNP309 T>G, is known to increase the expression of MDM2, thus being considered related to higher susceptibility to neoplasia. However, no agreement has been achieved regarding its effects on gastric cancer. METHODS The present systematic meta-analysis was performed based on comprehensive literature search from Pubmed, Web of science and CBM databases. RESULTS It was suggested from 6 independent studies that the GG genotype is associated with a significantly increased risk of gastric cancer (Recessive: OR = 1.43, 95% CI = 1.08-1.91, P = 0.013), and subgroup analysis also confirmed the relationship (English publications-recessive model: OR = 1.45, 95% CI = 1.10-1.91, P = 0.009; Studies in China-recessive model: OR = 1.58, 95% CI = 1.08-2.30, P = 0.017). No publication bias was detected. CONCLUSION The meta-analysis indicated a significant inverse association between GG genotype carriage and elevated risk of gastric cancer. However, more studies and detailed information are needed to fully address the topic.
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Affiliation(s)
- Xin Tian
- Molecular Oncology Department of Cancer Research Institute, the First Affiliated Hospital, China Medical University, Shenyang, China
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Schnorr K, Senftleben A, Kurka M, Rudenko A, Foucar L, Schmid G, Broska A, Pfeifer T, Meyer K, Anielski D, Boll R, Rolles D, Kübel M, Kling MF, Jiang YH, Mondal S, Tachibana T, Ueda K, Marchenko T, Simon M, Brenner G, Treusch R, Scheit S, Averbukh V, Ullrich J, Schröter CD, Moshammer R. Time-resolved measurement of interatomic coulombic decay in Ne2. Phys Rev Lett 2013; 111:093402. [PMID: 24033032 DOI: 10.1103/physrevlett.111.093402] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2013] [Indexed: 06/02/2023]
Abstract
The lifetime of interatomic Coulombic decay (ICD) [L. S. Cederbaum et al., Phys. Rev. Lett. 79, 4778 (1997)] in Ne2 is determined via an extreme ultraviolet pump-probe experiment at the Free-Electron Laser in Hamburg. The pump pulse creates a 2s inner-shell vacancy in one of the two Ne atoms, whereupon the ionized dimer undergoes ICD resulting in a repulsive Ne+(2p(-1))-Ne+(2p(-1)) state, which is probed with a second pulse, removing a further electron. The yield of coincident Ne+-Ne2+ pairs is recorded as a function of the pump-probe delay, allowing us to deduce the ICD lifetime of the Ne2(+)(2s(-1)) state to be (150±50) fs, in agreement with quantum calculations.
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Affiliation(s)
- K Schnorr
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
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Hu W, Zheng RR, Cui HX, Yue D, Wang Y, Jiang YH. Effects of bortezomib in sensitizing human prostate cancer cell lines to NK-mediated cytotoxicity. Asian J Androl 2012; 14:695-702. [PMID: 22902909 DOI: 10.1038/aja.2012.59] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
The proteasome inhibitor, bortezomib, has been demonstrated to sensitize tumor cells to tumor necrosis factor-related apoptosis-inducing ligand (TRAIL)-mediated apoptosis. Natural killer (NK) cells represent potent antitumor effector cells. They also express TRAIL. Therefore, we investigated whether bortezomib could sensitize tumor cells to NK cell-mediated killing, and have the same effect in human prostate cancer cell lines (LNCaP and DU145). We found that bortezomib strongly inhibits proliferation in both cell lines. Furthermore, compared with LNCaP cells, DU145 cells are more sensitive to bortezomib-induced apoptosis. However, bortezomib is unable to sensitize these two cell lines to NK cell-mediated killing in short-term assays. In long-term assays, we found that killing mediated by activated NK cells following bortezomib treatment leads to greater antitumor effects than either treatment alone. In addition, treatment with bortezomib causes these cells to upregulate apoptosis-related mRNA as well as death receptors and downregulate the major histocompatibility class (MHC)-I molecule on the cell surface of DU145 cells. In contrast, LNCaP cells are not sensitized by this treatment. Death receptors and the MHC-I molecule did not change in this cell line. These data suggest that bortezomib can be used to sensitize prostate cancer cells to NK cell-mediated killing and improve current cancer therapies. This therapeutic strategy may be more effective in patients with androgen-insensitive prostate cancer.
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Affiliation(s)
- Wei Hu
- Cancer Research Institute, First Affiliated Hospital, China Medical University, Shenyang 110001, China
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Sekushin V, Püttner R, Fink RF, Martins M, Jiang YH, Aksela H, Aksela S, Kaindl G. A comprehensive study of the vibrationally resolved S 2p−1 Auger electron spectrum of carbonyl sulfide. J Chem Phys 2012; 137:044310. [PMID: 22852621 DOI: 10.1063/1.4734310] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- V Sekushin
- Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin-Dahlem, Germany
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Abstract
BACKGROUND Inconsistent accuracies of CT-guided thoracic spinal biopsies have been reported in previous studies. PURPOSE To determine the accuracy of CT-guided thoracic spinal biopsy, to compare the results with those previously reported, and to determine if there are any factors that influence the accuracy of CT-guided thoracic spinal biopsy. MATERIAL AND METHODS In total, 158 consecutive CT-guided percutaneous thoracic spine procedures (performed at the Department of Spinal Surgery, Xi'an Red Cross Hospital between April 2000 and July 2010) were reviewed. The 158 lesions were categorized by location and radiographic features. Pathological and clinical follow-up were used to determine accuracy. RESULTS The diagnostic accuracy of CT-guided thoracic spinal biopsy was 90.5% overall. Biopsy of metastatic bone disease (98.2%) was significantly more accurate than biopsies of primary tumors (80.9%) and of hematological malignancies (47.0%) (P < 0.05 and P < 0.005, respectively). The diagnostic accuracy of CT-guided thoracic spinal biopsy was significantly higher for the lower thoracic spine (97.6%) than for the middle (90.0%) or upper thoracic spine (80.4%) (P < 0.05 and P < 0.025, respectively). The diagnostic accuracy was significantly higher for lytic lesions (96.4%) than for sclerotic lesions (81.3%) (P < 0.010). The accuracy of biopsies performed using the transpedicular approach (91.0%) was not significantly different from that of biopsies performed using posterolateral approaches (91.5%) (0.25 < P < 0.5). CONCLUSION Percutaneous CT-guided thoracic spinal biopsy is a viable alternative to open surgical biopsy. The diagnostic accuracy was not affected by any of the variables except for lesion level, histology, and radiographic features.
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Affiliation(s)
- DJ Hao
- Department of Spinal Surgery, Xi'an Red Cross Hospital, Xi'an Shaanxi
| | - HH Sun
- Department of Orthopaedic, Tangdu Hospital, Fourth Military Medical University, Xi'an Shaanxi
| | - BR He
- Department of Spinal Surgery, Xi'an Red Cross Hospital, Xi'an Shaanxi
| | - TJ Liu
- Department of Spinal Surgery, Xi'an Red Cross Hospital, Xi'an Shaanxi
| | - YH Jiang
- Department of Radiology, Xi'an Red Cross Hospital, Xi'an Shaanxi, China
| | - QP Zhao
- Department of Spinal Surgery, Xi'an Red Cross Hospital, Xi'an Shaanxi
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Moshammer R, Pfeifer T, Rudenko A, Jiang YH, Foucar L, Kurka M, Kühnel KU, Schröter CD, Ullrich J, Herrwerth O, Kling MF, Liu XJ, Motomura K, Fukuzawa H, Yamada A, Ueda K, Ishikawa KL, Nagaya K, Iwayama H, Sugishima A, Mizoguchi Y, Yase S, Yao M, Saito N, Belkacem A, Nagasono M, Higashiya A, Yabashi M, Ishikawa T, Ohashi H, Kimura H, Togashi T. Second-order autocorrelation of XUV FEL pulses via time resolved two-photon single ionization of He. Opt Express 2011; 19:21698-21706. [PMID: 22109020 DOI: 10.1364/oe.19.021698] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Second-order autocorrelation spectra of XUV free-electron laser pulses from the Spring-8 Compact SASE Source (SCSS) have been recorded by time and momentum resolved detection of two-photon single ionization of He at 20.45 eV using a split-mirror delay-stage in combination with high-resolution recoil-ion momentum spectroscopy (COLTRIMS). From the autocorrelation trace we extract a coherence time of 8 ± 2 fs and a mean pulse duration of 28 ± 5 fs, much shorter than estimations based on electron bunch-length measurements. Simulations within the partial coherence model [Opt. Lett. 35, 3441 (2010)] are in agreement with experiment if a pulse-front tilt across the FEL beam diameter is taken into account that leads to a temporal shift of about 6 fs between both pulse replicas.
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Affiliation(s)
- R Moshammer
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany.
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Yang XJ, Jiang YH, Zheng JW, Hong L, Zhou Q, Qin ZP. The role of serum basic fibroblast growth factor, estradiol and urine basic fibroblast growth factor in differentiating infantile haemangiomas from vascular malformations. Phlebology 2011; 26:191-6. [PMID: 21597045 DOI: 10.1258/phleb.2010.010020] [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] [Indexed: 11/18/2022]
Abstract
OBJECTIVE To investigate the role of serum basic fibroblast growth factor (bFGF), estradiol (E2) and urine bFGF in differentiating infantile haemangiomas from vascular malformations. METHOD Between October 2007 and January 2009, 97 patients with haemangiomas and 25 patients with vascular malformations who had not been treated previously were included in this prospective study. Forty-eight patients with cleft lip and/or palate were selected as controls. The age of all subjects ranged from 1 to 30 months. The serum and urine levels of bFGF were determined by enzyme-linked immunosorbent assay (ELISA). The serum levels of E2 were examined via radioimmunoassay. All data were analysed with SPSS 11.5 software package. RESULTS The concentration of serum and urine bFGF was significantly different among the three groups (haemangiomas, vascular malformations and controls) (P = 0.027, P = 0.001). Significantly different urine bFGF levels were found in patients with proliferating and involuting haemangiomas (P = 0.04). The serum E2 levels were significantly higher in patients with haemangiomas than vascular malformations (P = 0.001) and controls (P = 0.001). CONCLUSION Serum bFGF and E2 as well as urine bFGF can be used to supplement the clinical diagnosis of congenital vascular anomalies. Urine bFGF combined with serum E2 may be the most potential markers for diagnosing haemangiomas and determining the proliferating stage of haemangiomas.
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Affiliation(s)
- X J Yang
- Department of Oral and Maxillofacial Surgery, College of Stomatology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
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Qu JL, Zhang W, Liu YP, Qu XJ, Hou KZ, Jiang YH, Yang XH. Role of PI3K/Akt and MAPK/ERK pathways in gastric cancer exosome-mediated promotion of tumor cell proliferation. Shijie Huaren Xiaohua Zazhi 2011; 19:1109-1114. [DOI: 10.11569/wcjd.v19.i11.1109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the effect of gastric cancer exosomes on homologous tumor cell proliferation and to evaluate the role of PI3K/Akt and MAPK/ERK pathways in this process.
METHODS: Exosomes were isolated and purified from human gastric cancer MGC803 cells by serial centrifugation and sucrose gradient ultracentrifugation and observed by electron microscopy. Cell proliferation was measured by MTT assay, and protein expression was assayed by Western blot.
RESULTS: Gastric cancer exosomes had a characteristic saucer-like shape that was limited by a lipid bilayer, and their diameter ranged from 30 to 100 nm. CD9 and TSG101 were abundantly distributed on the surface of exosomes. Gastric cancer exosomes significantly increased MGC803 and SGC7901 cell proliferation in a time- and dose-dependent manner. Treatment with exosomes up-regulated the expression of phosphorylated Akt and ERK in a time-dependent manner.
CONCLUSION: Gastric cancer exosomes promote homologous tumor cell proliferation possibly by activating the PI3K/Akt and MAPK/ERK pathways.
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Qu JL, Qu XJ, Liu YP, Zhao MF, Hou KZ, Jiang YH, Yang XH. Role of tyrosine kinase Src in gastric cancer exosome-mediated promotion of tumor cell proliferation. Shijie Huaren Xiaohua Zazhi 2011; 19:557-561. [DOI: 10.11569/wcjd.v19.i6.557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the effect of gastric cancer exosomes on tumor cell proliferation and to evaluate the role of tyrosine kinase Src in this process.
METHODS: Exosomes were isolated and purified from gastric cancer SGC7901 cells by serial centrifugation and sucrose gradient ultracentrifugation and observed by electron microscopy. Cell proliferation was measured by MTT assay. Protein expression was assayed by Western blot.
RESULTS: Gastric cancer exosomes had a characteristic saucer-like shape that was limited by a lipid bilayer, and their diameter ranged from 30 to 100 nm. CD9 and TSG101 were abundant on the surface of exosomes. Gastric cancer exosomes significantly increased SGC7901 cell proliferation in a time- and dose-dependent manner. Compared with control cells, the proliferation of cells treated with 200 and 400 mg/L exosomes for 72 h were increased to 138% and 144%, respectively (both P < 0.01). The expression of phosphorylated Src in SGC7901 cells was up-regulated in a time- and dose-dependent manner after treatment with exosomes.
CONCLUSION: Gastric cancer exosomes promote tumor cell proliferation possibly by activating tyrosine kinase Src.
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Jiang YH, Rudenko A, Herrwerth O, Foucar L, Kurka M, Kühnel KU, Lezius M, Kling MF, van Tilborg J, Belkacem A, Ueda K, Düsterer S, Treusch R, Schröter CD, Moshammer R, Ullrich J. Ultrafast extreme ultraviolet induced isomerization of acetylene cations. Phys Rev Lett 2010; 105:263002. [PMID: 21231652 DOI: 10.1103/physrevlett.105.263002] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2010] [Indexed: 05/21/2023]
Abstract
Ultrafast isomerization of acetylene cations ([HC=CH](+)) in the low-lying excited A(2)Σ(g)(+) state, populated by the absorption of extreme ultraviolet (XUV) photons (38 eV), has been observed at the Free Electron Laser in Hamburg, (FLASH). Recording coincident fragments C(+) + CH2(+) as a function of time between XUV-pump and -probe pulses, generated by a split-mirror device, we find an isomerization time of 52±15 fs in a kinetic energy release (KER) window of 5.8<KER<8 eV, providing clear evidence for the existence of a fast, nonradiative decay channel.
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Affiliation(s)
- Y H Jiang
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
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Xu L, Liu J, Liu YP, Qu XJ, Zhang Y, Hou KZ, Jiang YH. Oxaliplatin enhances TRAIL-induced apoptosis of gastric cancer BGC823 cells. Shijie Huaren Xiaohua Zazhi 2010; 18:2187-2191. [DOI: 10.11569/wcjd.v18.i21.2187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To determine whether there is a synergistic effect between oxaliplatin and tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) in inducing the apoptosis of gastric cancer BGC823 cells.
METHODS: After BGC823 cells were cultured and treated with TRAIL and/or oxaliplatin, cell proliferation was measured using MTT assay; cell apoptosis was determined by flow cytometry after propidium iodide staining; and the distribution of lipid rafts and death receptors 4 (DR4) on cell membrane was analyzed by immunofluorescence staining with anti-cholera toxin B subunit, anti-DR4 antibody and rhodamine-conjugated fluorescent secondary antibody.
RESULTS: After BGC823 cells were treated with 1-1 000 µg/L TRAIL for 24 h, the reduced rates of cell proliferation did not exceed 20%. Treatment with 100 µg/L TRAIL for 24 h induced about 10% inhibition of cell proliferation and 4.12% ± 1.26% cell apoptosis. After BGC823 cells were treated with 1-50 mg/L oxaliplatin for 24 h, it was found that the half maximal inhibitory concentration (IC50) was 37.36 mg/L ± 8.12 mg/L. Treatment with oxaliplatin (38 mg/L, IC50 dose) plus TRAIL resulted in a dramatic increase in cell apoptosis when compared to treatment with TRAIL alone (19.83% ± 4.21% vs 40.42% ± 5.78%, P < 0.05). TRAIL at a concentration of 100 µg/L did not induce obvious lipid raft aggregation or DR4 clustering. Oxaliplatin (38 mg/L) significantly promoted lipid raft aggregation and DR4 clustering and induced the co-localization of DR4 and lipid rafts. Treatment with oxaliplatin and TRAIL for 24 h also induced DR4 clustering into aggregated lipid rafts.
CONCLUSION: Oxaliplatin enhances TRAIL-induced BGC823 cell apoptosis by clustering DR4 into lipid rafts.
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Qu JL, Zhao MF, Qu XJ, Hou KZ, Jiang YH, Yang XH, Liu YP. Role of MAPK/ERK signaling pathway in gastric cancer exosome-induced apoptosis of Jurkat T cells. Shijie Huaren Xiaohua Zazhi 2010; 18:1969-1973. [DOI: 10.11569/wcjd.v18.i19.1969] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the role of the mitogen-activated protein kinase (MAPK)/extracellular signal-regulated protein kinase (ERK) signaling pathway in gastric cancer exosome-induced apoptosis of Jurkat T cells.
METHODS: Gastric cancer exosomes were isolated and purified by serial centrifugation and sucrose gradient ultracentrifugation. The morphology of gastric cancer exosomes was observed by electron microscopy. Cell apoptosis was determined by propidium iodide staining and flow cytometry. The expression of caspase-3 and -8 and p-ERK was assayed by Western blot.
RESULTS: Gastric cancer exosomes, ranging in diameter from 30 to 100 nm, had a characteristic saucer-like shape that was limited by a lipid bilayer. These exosomes induced Jurkat T cell apoptosis in a time- and dose-dependent manner. Activation of caspase-3 and -8 and down-regulation of p-ERK expression were noted in exosome-induced apoptosis of Jurkat T cells.
CONCLUSION: Gastric cancer exosomes induce apoptosis of Jurkat T cells possibly by inhibiting the MAPK/ERK pathway.
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Liu J, Xu L, Liu YP, Qu XJ, Zhang Y, Hou KZ, Hu XJ, Jiang YH. Bortezomib enhances the sensitivity of gastric cancer cells to TRAIL-induced apoptosis by inhibiting the PI3K/Akt pathway. Shijie Huaren Xiaohua Zazhi 2010; 18:1854-1859. [DOI: 10.11569/wcjd.v18.i18.1854] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the effect of bortezomib on TRAIL-induced apoptosis in human gastric cancer cells, and to elucidate the role of the phosphoinositide 3-kinases (PI3K)/Akt signaling pathway in TRAIL-induced apoptosis of gastric cancer cells.
METHODS: Human gastric cancer MGC803 cells were cultured and treated with TRAIL and/or bortezomib. Cell viability was determined by MTT assay. Apoptosis was detected by flow cytometry. Caspase cleavage and the level of phosphor-Akt were determined by Western blot.
RESULTS: Cells were treated with either 20 or 50 nmol/L bortezomib, or 100 μg/L TRAIL for 24 h, or pretreated with bortezomib for 2 h followed by exposure to TRAIL for an additional 24 h. Compared with cells treated with TRAIL alone, cell viability was obviously lower and apoptosis rate was obviously higher in cells co-treated with TRAIL and 50 nmol/L bortezomib (cell viability: 35.1% ± 2.7% vs 71.0% ± 4.3%, P < 0.01; apoptosis rate: 31.3% ± 2.0% vs 8.2% ± 0.8%, P < 0.01). Pretreatment with 20 nmol/L bortezomib did not enhance the sensitivity of cells to TRAIL-induced apoptosis. TRAIL engagement led to PI3K/Akt activation. Bortezomib blocked the activation of PI3K/Akt signaling and enhanced the sensitivity of cells to TRAIL-induced apoptosis.
CONCLUSION: Bortezomib enhances TRAIL-induced apoptosis by blocking the activation of PI3K/Akt signaling pathway in human gastric cancer MGC803 cells.
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Qu JL, Qu XJ, Qu JL, Qu XJ, Zhao MF, Teng YE, Zhang Y, Hou KZ, Jiang YH, Yang XH, Liu YP. The role of cbl family of ubiquitin ligases in gastric cancer exosome-induced apoptosis of Jurkat T cells. Acta Oncol 2009; 48:1173-80. [PMID: 19863226 DOI: 10.3109/02841860903032817] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
BACKGROUND. Exosomes are nanometer-sized vesicles with immunomodulatory functions, which are released by a diverse range of living cells. Although recent studies have shown that tumor-derived exosomes can suppress the function of T cells, the molecular mechanisms are not well understood. In the present study, we investigated the role of the Casitas B lineage lymphoma (cbl) family of ubiquitin ligases in gastric cancer exosome-induced apoptosis of Jurkat T cells. MATERIALS AND METHODS. By serial centrifugation and sucrose gradient ultracentrifugation, we isolated and purified the exosomes from gastric cancer SGC7901 cells, and identified them by electron microscopy and Western blotting. Cell apoptosis was detected using propidium iodide staining. Western blotting and RT-PCR was exploited to evaluate the expression of proteins and mRNA, respectively. RESULTS. Gastric cancer exosomes induced Jurkat T cell apoptosis in a time- and dose-dependent manner and activated caspases 3, 8 and 9. The expression of Cbl-b and c-Cbl was up-regulated during exosome-induced apoptosis of cells. Meanwhile, exosomes induced ubiquitination of the p85 subunit of phosphoinositide 3-kinase (PI3K) and reduced downstream Akt activity. Inhibition of proteasome led to partial restoration of Akt activity and cell apoptosis. DISCUSSION AND CONCLUSIONS. The Cbl family of ubiquitin ligases might be involved in regulation of exosome-induced apoptosis of Jurkat T cells by increasing PI3K proteasome degradation, inactivation of PI3K/Akt signaling, thus mediating some effects of caspase activation.
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Affiliation(s)
- Jing-Lei Qu
- Department of Medical Oncology, The First Hospital, China Medical University, NO.155, North Nanjing Street, Heping District, Shenyang, 110001, Liaoning Province, China
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Jiang YH, Rudenko A, Kurka M, Kühnel KU, Ergler T, Foucar L, Schöffler M, Schössler S, Havermeier T, Smolarski M, Cole K, Dörner R, Düsterer S, Treusch R, Gensch M, Schröter CD, Moshammer R, Ullrich J. Few-photon multiple ionization of N2 by extreme ultraviolet free-electron laser radiation. Phys Rev Lett 2009; 102:123002. [PMID: 19392273 DOI: 10.1103/physrevlett.102.123002] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2008] [Indexed: 05/27/2023]
Abstract
Few-photon multiple ionization of N2 was studied differentially in a reaction microscope using 44 eV, approximately 25 fs, intense ( approximately 10(13) W/cm(2)) photon pulses from FLASH. Sequential ionization is observed to dominate. For various intermediate charge states N(2)(n+0 we find a considerable excess of photons absorbed compared to the minimum number that would energetically be required. Photoionization of aligned N(2)(n+) ions, produced by photon absorption in sequential steps, is explored and few-photon absorption pathways are traced by inspecting kinetic energy releases and fragment-ion angular distributions.
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Affiliation(s)
- Y H Jiang
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
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Qu JL, Qu XJ, Zhao MF, Teng YE, Zhang Y, Hou KZ, Jiang YH, Yang XH, Liu YP. The role of cbl family of ubiquitin ligases in gastric cancer exosome-induced apoptosis of Jurkat T cells. Acta Oncol 2009. [DOI: 10.1080/02841860903032817] [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: 10/20/2022]
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