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Xu DM, Han PH, Chen L, Li TT, Yang XH, Guo R. Knockdown of MMP16 inhibits cell proliferation and invasion in chordoma in vitro. J BIOL REG HOMEOS AG 2020; 34:2263-2270. [PMID: 33210500 DOI: 10.23812/20-559-l] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- D M Xu
- Department of General Surgery, Weifang People's Hospital, Weifang, China
| | - P H Han
- Department of Encephalopathy, Traditional Chinese Medical Hospital of Huangdao District, Qingdao, China
| | - L Chen
- Operation Room, The People's Hospital of Zhangqiu Area, Jinan, China
| | - T T Li
- Operation Room, The People's Hospital of Zhangqiu Area, Jinan, China
| | - X H Yang
- Department of Pharmacy, The People's Hospital of Zhangqiu Area, Jinan, China
| | - R Guo
- Outpatient Department, The People's Hospital of Zhangqiu Area, Jinan, China
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Wang J, Huang L, Chen X, Zhou L, You J, Xu DM, Liu JF. [Predicting the prognosis for severe brain injury patients: short-latency somatosensory evoked potential combined with electroencephalogram reactivity]. Zhonghua Yi Xue Za Zhi 2020; 100:2924-2928. [PMID: 32993252 DOI: 10.3760/cma.j.cn112137-20200217-00305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the the effectiveness of using short-latency somatosensory evoked potential(SLSEP) combined with electroencephalogram(EEG) reactivity to predict the prognosis of severe brain injury(SBI) patients. Methods: Consecutive patients with SBI admitted in neurosurgery intensive care unit(NSICU) at Xiangya Hospital of Central South University from July 2018 to January 2019 were prospectively collected. SLSEP and EEG were recorded in these patients in NSICU within two weeks after injury onset. EEG reactivity(EEG-R) was tested during EEG signal stabilization. In addition, the concentrations of serum neuron-specific enolase (NSE) and S100 protein were also detected. All patients were evaluated with Glasgow Outcome Scale(GOS) during 12 months' follow-up. GOS grade 3 to 5 was defined as favorable group, and GOS grade 1 to 2 was defined as unfavorable group. The association of relevant predictors with patient's prognosis was assessed. The area under the receiver operating characteristic (ROC) curve (AUC) was used to evaluate each potential predictor. Results: Forty-three patients were included in the study, with 26 patients of favorable outcomes and 17 patients with unfavorable prognosis. Univariate analysis revealed that the Glasgow Coma Scale (GCS) score, the concentration of serum NSE, EEG-R, the amplitude of SLSEP were all associated with the prognosis after 12 months' follow-up. Moreover, the AUC for prediction of favorable prognosis by GCS, NSE, EEG-R, SLSEP was 0.661(95%CI: 0.493-0.829), 0.697(95%CI: 0.531-0.862), 0.718(95%CI: 0.557-0.879) and 0.758(95%CI: 0.609-0.907) respectively. However, there was no significant difference of age, gender, pupillary light reflex and S100 protein between the two groups. Furthermore, multiple logistic regression analysis showed that only SLSEP amplitude (OR=2.058, 95%CI: 0.867-4.888) and EEG-R(OR=3.748, 95%CI: 0.857-16.394) were independent predictors of favorable prognosis, and the prognostic model containing these two variables yielded an predictive performance with an AUC of 0.798. Conclusion: The higher amplitude of SLSEP and the existence of EEG-R are predictors of good prognosis in SBI patients, and the combined use of SLSEP and EEG-R in predicting the prognosis of SBI patients is more reliable.
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Affiliation(s)
- J Wang
- Neurosurgery Intensive Care Unit, Xiangya Hospital of Central South University, Changsha 410008, China
| | - L Huang
- Department of Critical Care Medicine, Xiangya Hospital of Central South University, Changsha 410008, China
| | - X Chen
- Neurosurgery Intensive Care Unit, Xiangya Hospital of Central South University, Changsha 410008, China
| | - L Zhou
- Neurosurgery Intensive Care Unit, Xiangya Hospital of Central South University, Changsha 410008, China
| | - J You
- Neurosurgery Intensive Care Unit, Xiangya Hospital of Central South University, Changsha 410008, China
| | - D M Xu
- Department of Critical Care Medicine, Xiangya Hospital of Central South University, Changsha 410008, China
| | - J F Liu
- Neurosurgery Intensive Care Unit, Xiangya Hospital of Central South University, Changsha 410008, China
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Xu DM, Wang L, Zhu HY, Liang JH, Li JY, Xu W. [Primary thymic mucosa-associated lymphoid tissue lymphoma: 7 clinical cases report and a review of the literature]. Zhonghua Xue Ye Xue Za Zhi 2020; 41:54-58. [PMID: 32023755 PMCID: PMC7357913 DOI: 10.3760/cma.j.issn.0253-2727.2020.01.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Objective: To reveal clinical features, pathological diagnosis, treatment and prognosis of primary thymic mucosa-associated lymphoid tissue (MALT) lymphoma and review literatures. Methods: The clinical characteristics, pathological diagnosis, laboratory texts, treatment and prognosis of 7 cases of primary thymic MALT lymphoma identified at the First Affiliated Hospital of Nanjing Medical University from November 2017 to January 2019 were collected and analyzed. Results: Of 7 primary thymic MALT lymphoma cases, six were female. Patients were often asymptomatic and were found mediastinal mass by chest CT. After mediastinal mass resection, pathologist reported a primary thymic MALT lymphoma. Laboratory tests showed all patients were positive for anti-nuclear antibody, anti-Ro52 antibodies and anti-Sjogren's syndrome A antibodies, and increased erythrocyte sedimentation rate (ESR) . Four were diagnosed with Sjogren's syndrome (SS) . After surgery, the patients were given the positron emission tomography computed tomography (PET-CT) scans. All cases received "watch and wait" approach. Up to now, all cases showed good prognoses and none of them relapsed. Conclusion: Primary thymic MALT lymphoma was rare, and it was often associated with autoimmune diseases. Such patients who usually had good prognoses should be followed up closely and avoided excessive treatments if there were no indications of intervention.
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Affiliation(s)
- D M Xu
- Department of Hematology, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - L Wang
- Department of Hematology, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - H Y Zhu
- Department of Hematology, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - J H Liang
- Department of Hematology, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - J Y Li
- Department of Hematology, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - W Xu
- Department of Hematology, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
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Jiang MJ, Zhang HJ, Li WR, Wu WQ, Huang YM, Xu DM, Qi YY, Qin KY, Zhang L, Zhang JL. Analysis of EEG Lemple-Ziv complexity and correlative aspects before and after treatment of anti-syphilis therapy for neurosyphilis. Neurol Res 2019; 41:199-203. [PMID: 30912484 DOI: 10.1080/01616412.2018.1520438] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Objective To investigate the diagnostic value of electroencephalogram (EEG) complexity in patients with neurosyphilis by comparing the changes of electroencephalogram Lempel-Ziv complexity (EEG-LZC) before and after anti-syphilis treatment. Methods The EEG complexity of neurosyphilis patients diagnosed in our hospital from July in 2015 to June in 2017 was analyzed and compared with other diagnostic results such as serology examination and cerebrospinal fluid examination. Results A total of 27 patients were diagnosed, including 19 males and 8 females, of which 6 were mesenchymal(cerebrospinal membrane and meningeal vascular), 16 were parenchymal(paralytic dementia, spinal cord tuberculosis and optic neuropathy), and 5 were asymptomatic. After intensive anti-syphilis therapy, the LZC increased significantly in all patients while the trend and degree of change were consistent with other diagnostic results. Conclusion The LZC can be used as one of the diagnostic indexes meanwhile the trend and degree of its change can be used as the reference index of curative effect to neurosyphilis.
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Affiliation(s)
- M J Jiang
- a Department of Neurology , Beijing Ditan Hospital, Capital Medical University , Beijing , China
| | - H J Zhang
- b Department of Urology , Beijing Ditan Hospital, Capital Medical University , Beijing , China
| | - W R Li
- a Department of Neurology , Beijing Ditan Hospital, Capital Medical University , Beijing , China
| | - W Q Wu
- a Department of Neurology , Beijing Ditan Hospital, Capital Medical University , Beijing , China
| | - Y M Huang
- a Department of Neurology , Beijing Ditan Hospital, Capital Medical University , Beijing , China
| | - D M Xu
- a Department of Neurology , Beijing Ditan Hospital, Capital Medical University , Beijing , China
| | - Y Y Qi
- a Department of Neurology , Beijing Ditan Hospital, Capital Medical University , Beijing , China
| | - K Y Qin
- a Department of Neurology , Beijing Ditan Hospital, Capital Medical University , Beijing , China
| | - L Zhang
- a Department of Neurology , Beijing Ditan Hospital, Capital Medical University , Beijing , China
| | - J L Zhang
- a Department of Neurology , Beijing Ditan Hospital, Capital Medical University , Beijing , China
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Xu DM, Ke WC, Zhang P, Li FH, Guo XS. Characteristics of Pediococcus pentosaceus Q6 isolated from Elymus nutans growing on the Tibetan Plateau and its application for silage preparation at low temperature. J Appl Microbiol 2018; 126:40-48. [PMID: 30223299 DOI: 10.1111/jam.14110] [Citation(s) in RCA: 8] [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: 06/13/2018] [Revised: 08/17/2018] [Accepted: 09/11/2018] [Indexed: 11/30/2022]
Abstract
AIMS Characteristics of a strain Pediococcus pentosaceus Q6 isolated from Elymus nutans growing on the Tibetan plateau and its effects on E. nutans silage fermentation stored at low temperature were investigated. METHODS AND RESULTS Sugar fermentation pattern and growth profiles of the strain Q6 and its reference strain APP were characterized. The strain Q6 and APP were inoculated to E. nutans at ensiling respectively; and ensiled at different temperatures (10, 15 and 25°C) for 30, 60 and 90 days. The results indicated that Q6 could grow at pH 3·0 and at 4°C. In contrast to APP, Q6 could ferment mannitol, saccharose, sorbitol and rhamnose. Lower pH in Q6-treated silages fermented for 60 days at 10 and 15°C was found compared with the control and APP-treated groups. For the silages that were stored at 10 or 15°C, the greatest lactic acid content were detected in Q6-inoculated silages ensiled for 30 and 60 days respectively. There were no differences in pH and lactic acid content between Q6- and APP-treated silages ensiled at 10 and 15°C for 90 days respectively. CONCLUSIONS Inoculation of the strain P. pentosaceus Q6 could improve fermentation quality of ensiled E. nutans at the early stage of ensiling stored at low temperature (10 or 15°C). SIGNIFICANCE AND IMPACT OF THE STUDY The selection of P. pentosaceus inoculants for improving silage quality at low temperature, which provides a candidate strain to make high-quality silage in regions with frigid climate.
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Affiliation(s)
- D M Xu
- State Key Laboratory of Grassland and Agro-ecosystems, School of Life Sciences, Lanzhou University, Lanzhou, China.,Probiotics and Biological Feed Research Centre, Lanzhou University, Lanzhou, China
| | - W C Ke
- State Key Laboratory of Grassland and Agro-ecosystems, School of Life Sciences, Lanzhou University, Lanzhou, China.,Probiotics and Biological Feed Research Centre, Lanzhou University, Lanzhou, China
| | - P Zhang
- State Key Laboratory of Grassland and Agro-ecosystems, School of Life Sciences, Lanzhou University, Lanzhou, China.,Probiotics and Biological Feed Research Centre, Lanzhou University, Lanzhou, China
| | - F H Li
- Probiotics and Biological Feed Research Centre, Lanzhou University, Lanzhou, China.,Stay Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - X S Guo
- State Key Laboratory of Grassland and Agro-ecosystems, School of Life Sciences, Lanzhou University, Lanzhou, China.,Probiotics and Biological Feed Research Centre, Lanzhou University, Lanzhou, China
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Ke WC, Ding WR, Xu DM, Ding LM, Zhang P, Li FD, Guo XS. Effects of addition of malic or citric acids on fermentation quality and chemical characteristics of alfalfa silage. J Dairy Sci 2017; 100:8958-8966. [PMID: 28918135 DOI: 10.3168/jds.2017-12875] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [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: 03/15/2017] [Accepted: 07/30/2017] [Indexed: 11/19/2022]
Abstract
We studied the effects on alfalfa preservation and chemical composition of the addition of different levels of malic acid and citric acid at ensiling as well as the utilization efficiency of these 2 organic acids after fermentation. Alfalfa was harvested at early bloom stage. After wilting to a dry matter content of approximately 40%, the alfalfa was chopped into 1- to 2-cm pieces for ensiling. Four levels (0, 0.1, 0.5, and 1% of fresh weight) of malic acid or citric acid were applied to chopped alfalfa at ensiling with 4 replicates for each treatment, and the treated alfalfa forages were ensiled for 60 d in vacuum-sealed polyethylene bags (dimensions: 200 mm × 300 mm) packed with 200 to 230 g of fresh alfalfa per mini silo and an initial density of 0.534 g/cm3. The application of malic or citric acids at ensiling for 60 d led to lower silage pH than was observed in the control silage (0% of malic or citric acids). Application of the 2 organic acids led to higher lactic acid concentration in alfalfa silage than in the control silage except with the application rate of 1% of fresh weight. Silages treated with both organic acids had lower nonprotein nitrogen concentrations than the control silages, and the nonprotein nitrogen concentrations in ensiled forages decreased with the increase in malic or citric acid application rates. The application of the 2 organic acid additives led to lower saturated fatty acid proportions and higher polyunsaturated fatty acid proportions in ensiled alfalfa than in the control silage. The amount of malic and citric acids degraded during ensiling of alfalfa was 1.45 and 0.63 g, respectively. At the application rate of 0.5% of fresh weight, residues of malic acid and citric acid in alfalfa silage were 11.1 and 13.6 g/kg of dry matter. These results indicate that including malic or citric acids at the ensiling of alfalfa effectively improved silage fermentation quality, limited proteolysis, improved fatty acid composition of the ensiled forage, and could provide animals with additional feed additives proven to promote animal performance. However, when the application rate of both organic acids reached 1%, the concentration of lactic acid in silages decreased notably. Additionally, 0.5 and 1% application rates also increased the yeast count in ensiled alfalfa.
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Affiliation(s)
- W C Ke
- State Key Laboratory of Grassland Agro-Ecosystems, School of Life Sciences, Lanzhou University, Lanzhou 730000, PR China; Probiotics and Biological Feed Research Centre, Lanzhou University, Lanzhou 730000, PR China
| | - W R Ding
- State Key Laboratory of Grassland Agro-Ecosystems, School of Life Sciences, Lanzhou University, Lanzhou 730000, PR China; Probiotics and Biological Feed Research Centre, Lanzhou University, Lanzhou 730000, PR China
| | - D M Xu
- State Key Laboratory of Grassland Agro-Ecosystems, School of Life Sciences, Lanzhou University, Lanzhou 730000, PR China; Probiotics and Biological Feed Research Centre, Lanzhou University, Lanzhou 730000, PR China
| | - L M Ding
- State Key Laboratory of Grassland Agro-Ecosystems, School of Life Sciences, Lanzhou University, Lanzhou 730000, PR China
| | - P Zhang
- State Key Laboratory of Grassland Agro-Ecosystems, School of Life Sciences, Lanzhou University, Lanzhou 730000, PR China
| | - F D Li
- State Key Laboratory of Grassland Agro-Ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, PR China
| | - X S Guo
- State Key Laboratory of Grassland Agro-Ecosystems, School of Life Sciences, Lanzhou University, Lanzhou 730000, PR China; Probiotics and Biological Feed Research Centre, Lanzhou University, Lanzhou 730000, PR China.
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Xu DM, Wen H, Wang LA, Hu CX, Qi X, Sun GG, Liu RD, Wang ZQ, Cui J. Identification of early diagnostic antigens in soluble proteins of Trichinella spiralis adult worms by Western blot. Trop Biomed 2017; 34:191-198. [PMID: 33592998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Previous studies showed that crude antigens from Trichinella spiralis adult worms (AW) can be recognized by mouse infection sera at 8 days post infection. The aim of this study was to identify the early diagnostic antigenic bands in soluble proteins from T. spiralis AW by Western blot using early infection sera. The affecting factors of adult recovery were firstly observed in this study, and the results showed that the maximum number of adults was collected from small intestine when the female BALB/c mice were orally infected with 4000 ML and sacrificed at 3 days post infection. The results of Western blot analysis showed that seven protein bands (31, 35.1, 39, 40.6, 41.9, 47 and 50.6 kDa) could be recognized by early infection sera as early as at 8-10 days post infection, and were strongly reacted with mouse infection sera at 11-12 days post infection. Our results suggested that the seven protein bands of T. spiralis AW soluble proteins might be the early expressed antigens during the intestinal stage of Trichinella infection and therefore have potential value for the early diagnosis of trichinellosis.
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Affiliation(s)
- D M Xu
- Department of Parasitology, Medical College
- The Third Affiliated Hospital, Zhengzhou University, 40 Daxue Road, Zhengzhou 450052, People's Republic of China
| | - H Wen
- Department of Parasitology, Medical College
| | - L A Wang
- Department of Parasitology, Medical College
| | - C X Hu
- Department of Parasitology, Medical College
| | - X Qi
- Department of Parasitology, Medical College
| | - G G Sun
- Department of Parasitology, Medical College
| | - R D Liu
- Department of Parasitology, Medical College
| | - Z Q Wang
- Department of Parasitology, Medical College
| | - J Cui
- Department of Parasitology, Medical College
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Sun ZC, Xu WG, Xiao XM, Yu WH, Xu DM, Xu HM, Gao HL, Wang RX. Ultrasonic dissection versus conventional electrocautery during gastrectomy for gastric cancer: a meta-analysis of randomized controlled trials. Eur J Surg Oncol 2015; 41:527-33. [PMID: 25690648 DOI: 10.1016/j.ejso.2015.01.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [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: 07/02/2014] [Revised: 12/23/2014] [Accepted: 01/19/2015] [Indexed: 01/11/2023] Open
Abstract
OBJECTIVE Use of ultrasonic surgical instrument is gaining popularity for dissection and coagulation in open surgery. However, there is still no consensus on the efficacy and safety of its use compared with conventional surgical technique in open gastrectomy for gastric cancer. The aim of this meta-analysis was to evaluate the role and surgical outcomes of ultrasonic dissection (UD) compared with conventional electrocautery (EC). METHODS A systematic literature search was performed to identify all studies comparing UD and EC in gastric cancer surgery. Intraoperative and postoperative outcomes were compared using weighted mean differences (WMDs) and odds ratios (ORs). RESULTS Five studies were included in this meta-analysis, comprising 489 patients. Meta-analysis results showed that compared with EC, UD was associated with significantly shorter operation time (P = 0.03), less intraoperative blood loss (P = 0.002), lower morbidity (P = 0.02), and reduced postoperative hospital stay (P = 0.03). However, there was no significant difference between the two surgical techniques with regards to postoperative abdominal drainage (P = 0.17), and total cost in hospital (P = 0.59). CONCLUSIONS Compared to EC, the use of UD during open gastrectomy can provide several improved outcomes for operation time, intraoperative blood loss, overall morbidity, and postoperative hospital stay. It appears that UD can be used instead of conventional EC in open gastric cancer surgery, although more larger trials with long follow-up should be performed.
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Affiliation(s)
- Z C Sun
- Department of General Surgery, Weifang People's Hospital, Weifang 261041, Shandong, China
| | - W G Xu
- Department of General Surgery, Weifang People's Hospital, Weifang 261041, Shandong, China
| | - X M Xiao
- Department of General Surgery, Weifang People's Hospital, Weifang 261041, Shandong, China.
| | - W H Yu
- Epidemiology and Statistics Teaching and Research Section, School of Public Health, Tianjin Medical University, Tianjin 300070, China
| | - D M Xu
- Department of General Surgery, Weifang People's Hospital, Weifang 261041, Shandong, China
| | - H M Xu
- Department of General Surgery, Weifang People's Hospital, Weifang 261041, Shandong, China
| | - H L Gao
- Department of General Surgery, Weifang People's Hospital, Weifang 261041, Shandong, China
| | - R X Wang
- Department of Cardiovascular Surgery, Tianjin Medical University General Hospital, Tianjin 300052, China
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Xu DM, Yu XF, Zhang D, Zhang MX, Zhou JF, Tan PH, Ding YC. Mesenchymal stem cells differentially mediate regulatory T cells and conventional effector T cells to protect fully allogeneic islet grafts in mice. Diabetologia 2012; 55:1091-102. [PMID: 22270222 DOI: 10.1007/s00125-011-2433-9] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2011] [Accepted: 11/28/2011] [Indexed: 12/16/2022]
Abstract
AIMS/HYPOTHESIS Limited information is available on the cellular interactions between regulatory T (T(reg)) cells and mesenchymal stem cells (MSCs). In particular, a direct effect of MSCs on the survival and proliferation of T(reg) cells has not been demonstrated. METHODS We investigated the effects of MSCs on effector T (T(eff)) cells and T(reg) cells, and the molecular mechanisms involved in the distinct regulation of these two cell populations by MSCs in vivo and in vitro. RESULTS We show that MSCs are capable of selectively suppressing T(eff) cells and fostering the generation of T(reg) cells. T(eff) cells, but not T(reg) cells, fail to respond to IL-2 and undergo profound apoptosis in the presence of MSCs. The differential regulations of these two T cell subsets by MSCs are associated with their distinct expressions of CD25, with MSCs specifically reducing the expression of CD25 on T(eff) and sparing T(reg) cells intact. In vivo, the administration of MSCs significantly delays the rejection of allogeneic islet grafts in adaptive transferred recipients by favouring the induction of T(reg) cells. In this model, MSCs inhibit the proliferation and development of alloreactive T(eff) but potently enhance the induction of T(reg) cells. CONCLUSIONS/INTERPRETATION We demonstrate that MSCs are capable of regulating T(eff) and T(reg) cells differentially in vitro. MSCs inhibit T(eff) cells by inducing apoptosis and impairing the proliferative response to IL-2 in T(eff) cells, but favour the survival and expansion of T(reg) cells. This result is further demonstrated in mice that have undergone allogeneic islet transplantation, in which MSCs suppress alloreactive T(eff) cells while favouring the induction of T(reg) cells, thus protecting the islet allografts from rejection.
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Affiliation(s)
- D M Xu
- Department of Haematology, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
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van de Wiel JCM, Wang Y, Xu DM, van der Zaag-Loonen HJ, van der Jagt EJ, van Klaveren RJ, Oudkerk M. Neglectable benefit of searching for incidental findings in the Dutch--Belgian lung cancer screening trial (NELSON) using low-dose multidetector CT. Eur Radiol 2007; 17:1474-82. [PMID: 17206426 DOI: 10.1007/s00330-006-0532-7] [Citation(s) in RCA: 107] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2006] [Revised: 10/25/2006] [Accepted: 11/07/2006] [Indexed: 12/21/2022]
Abstract
The purpose of this study was to prospectively determine the frequency and spectrum of incidental findings (IFs) and their clinical implications in a high risk population for lung cancer undergoing low-dose multidetector computed tomography (MDCT) screening for lung cancer. Scans of 1,929 participants were evaluated for lung lesions and IFs by two radiologists. IFs were categorised as not clinically relevant or possibly clinically relevant. Findings were considered possibly clinically relevant if they could require further evaluation or could have substantial clinical implications. All possibly clinically relevant IFs were reviewed by a third radiologist, who determined its clinical relevance. Of all 1,929 participants, 1,410 (73%) had not clinically relevant IFs and 163 (8%) had possibly clinically relevant IFs of which 129 (79%) were indeed considered clinically relevant. Additional imaging was performed mainly by ultrasound (112 of 118, 96%). All but one lesion were concluded to be benign, mostly cysts (n = 115, 80%). Only 21 (1%) participants had findings with clinical implications. In one participant a malignancy was found, yet without any clinical benefit since no curative treatment was possible. Based on our results, we advise against systematically searching for and reporting of IFs in lung cancer screening studies using low-dose MDCT.
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Affiliation(s)
- J C M van de Wiel
- University Medical Centre Groningen, University of Groningen, Hanzeplein 1, 9700 RB Groningen, The Netherlands.
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Xu YJ, Xie SX, Zhao HF, Han D, Xu TH, Xu DM. [Studies on the chemical constituents from Tribulus terrestris]. Yao Xue Xue Bao 2001; 36:750-3. [PMID: 12579974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
AIM To investigate the chemical constituents of the fruit of Tribulus terrestris J.. METHODS Various chromatographic techniques were used to separate the chemical constituents. ESIMS, IR, 1HNMR, 13CNMR and HMBC were used to determine the structures of the isolated constituents. RESULTS Two new compounds were isolated from the fruits of Tribulus terrestris J. and were identified as neohecogenin-3-O-beta-D-glucopyranosyl (1-->2)-beta-D-glucopyranosyl (1-->4)-beta-D-galactopyranoside (I); neohecogenin-3-O-beta-D-glucopyranosyl (1-->4)-beta-D-galactopyranoside (II). CONCLUSION Compounds I and II are new steroidal saponins.
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Affiliation(s)
- Y J Xu
- Academy of Traditional Chinese Medicine and Materia Medica of Jilin Province, Changchun 130021, China.
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Xu DM, Xu QM, Ai YH. [Evaluation of organ function monitoring and supporting during the treatment of multiple trauma]. Hunan Yi Ke Da Xue Xue Bao 2000; 25:288-90. [PMID: 12212171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
Abstract
OBJECTIVE To analyse the evaluation of organ function monitoring and supporting during the treatment of multiple trauma. METHODS Eighty-eight patients with severe multiple trauma were admitted into Department of Intensive Care Unit(ICU) and the cardiovascular, respiratory, renal, and coagulation functions, milieu interieur, and infectious sources were monitored. RESULTS Seventy-six cases survived and twelve cases died. The major delayed diagnoses included pneumothorax hematopneumothorax, intraperitoneal organ injury, and fracture. The major complications were severe infection, hypotension, acute renal failure, adult respiratory distress syndrome (ARDS), and multiple organ disfunction syndrome(MODS). CONCLUSION Active monitor and support of organ function can lower the rate of missed or delayed diagnoses and also decrease complications.
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Affiliation(s)
- D M Xu
- Department of Intensive Care Unit, Xiangya Hospital, Hunan Medical University, Changsha 410008
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13
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Nishimura M, Yu G, Levesque G, Zhang DM, Ruel L, Chen F, Milman P, Holmes E, Liang Y, Kawarai T, Jo E, Supala A, Rogaeva E, Xu DM, Janus C, Levesque L, Bi Q, Duthie M, Rozmahel R, Mattila K, Lannfelt L, Westaway D, Mount HT, Woodgett J, St George-Hyslop P. Presenilin mutations associated with Alzheimer disease cause defective intracellular trafficking of beta-catenin, a component of the presenilin protein complex. Nat Med 1999; 5:164-9. [PMID: 9930863 DOI: 10.1038/5526] [Citation(s) in RCA: 171] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The presenilin proteins are components of high-molecular-weight protein complexes in the endoplasmic reticulum and Golgi apparatus that also contain beta-catenin. We report here that presenilin mutations associated with familial Alzheimer disease (but not the non-pathogenic Glu318Gly polymorphism) alter the intracellular trafficking of beta-catenin after activation of the Wnt/beta-catenin signal transduction pathway. As with their effect on betaAPP processing, the effect of PS1 mutations on trafficking of beta-catenin arises from a dominant 'gain of aberrant function' activity. These results indicate that mistrafficking of selected presenilin ligands is a candidate mechanism for the genesis of Alzheimer disease associated with presenilin mutations, and that dysfunction in the presenilin-beta-catenin protein complexes is central to this process.
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Affiliation(s)
- M Nishimura
- Centre for Research in Neurodegenerative Diseases, Department of Medicine (Neurology), University of Toronto, Ontario, Canada
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14
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Qian BZ, Qian J, Xu DM, Johansen MV. The population dynamics of cercariae of Schistosoma japonicum in Oncomelania hupensis. Southeast Asian J Trop Med Public Health 1997; 28:296-302. [PMID: 9444009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The population dynamics and production of cercariae of Schistosoma japonicum in Oncomelania hupensis are reported. The experiments covered the whole life span of positive snails and different intervals of cercariae shedding. The results indicated that two patterns of the dynamics of cercariae shedding had been found in the life span of positive snails. The first was a long-time interval (4-7 days) and progressive decline pattern. The cercariae shedding of positive snails lasted 18-19 weeks in males and for 32-33 weeks (once a week). The second was a short-time interval (1-3 days) and continued release pattern. The cercariae shedding of positive snails lasted for 20-36 days (every day shedding). Shedding cercariae stimulate cercariae development.
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Affiliation(s)
- B Z Qian
- Institute of Parasitic Diseases, Zhejiang Academy of Medical Sciences, Hangzhou, Zhejiang, People's Republic of China.
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15
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Xu DM. [Enhancing the efficiency of nursing rounds in the psychiatric department]. Zhonghua Hu Li Za Zhi 1995; 30:155-6. [PMID: 7664397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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16
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Jin XQ, Yan MM, Huang EX, Xu YJ, Gu YJ, Cui DB, Lin SY, Xu DM. [Chemical constituents of Eupolyphaga sinensis Walkre]. Zhongguo Zhong Yao Za Zhi 1993; 18:355-6, 382-3. [PMID: 8274215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- X Q Jin
- Institute of Traditional Chinese Medicine and Materia Medica, Jilin Province, Changchun
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17
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Abstract
Evidence is presented in support of a chromosomal location for sequences homologous to polydnavirus DNA in the ichneumonid parasitoid Hyposoter fugitivus. In this study, four different viral genome segments were cloned and used as probes against genomic DNA extracted from male parasitoids and digested with a variety of restriction enzymes. Each probe typically identified a single off-size fragment (OSF) in the case of enzymes not cutting viral genome segments, while two OSFs were generated by enzymes cutting at one and two sites. While extra OSFs were occasionally observed, these were invariably found to be due to the presence of polymorphic restriction sites in flanking chromosomal DNA. Analysis of these data suggests that a single, stable chromosomal locus exists for sequences homologous to each viral genome segment; the data also indicate that viral and cognate parasitoid genomic DNAs are largely if not entirely colinear.
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Affiliation(s)
- D M Xu
- Department of Microbiology, Dalhousie University, Halifax, Nova Scotia, Canada
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18
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Affiliation(s)
- D M Xu
- Institute of Traditional Chinese Medicine and Materia Medica of Jinlin Province, Chang Chun, People's Republic of China
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19
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Abstract
Based on the results of previous investigations that pollen Typhae, a Traditional Chinese Medicine, Had antiatherogenic effects, several components were isolated successively from the drug and their effects on porcine aortic endothelial cell (EC) and smooth muscle cell (SMC) cultures as well as on platelet aggregation were examined. 12 components isolated from Pollen Typhae have been identified on their chemical structures and biological effects. 4 of them showed different evident antiatherogenic effects. 1) Isorhamnetin-3-O-rhamnosyl-glucoside could stimulate EC to produce tPA and PGI2; 2) Quercetin-3-O-neohesperidose could protect EC from injury by fibrin, as well as raise tPA activity; 3) beta-Sitosterol palmitate could inhibit SMC proliferation and 4) beta-Sitosterol glucoside showed an inhibitory effect on platelet aggregation. These results would provide some information for the search of new drugs in the treatment and prevention of atherosclerosis.
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Affiliation(s)
- J Zhao
- Shanghai Ins. of Hematol., Shanghai 2nd Med. Univ., China
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20
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Zhao J, Zhang CY, Xu DM, Huang GQ, Xu YL, Wang ZY, Fang SD, Chen Y, Gu YL. Further study of pollen typhae's effects on the production of tPA and PGI, by cultured endothelial cells. Thromb Res 1989; 56:677-85. [PMID: 2517363 DOI: 10.1016/0049-3848(89)90285-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
We had reported that Pollen Typhae, a Chinese traditional herbal medicine could reduce atherosclerotic plaque formation in experimental animals. Fraction IV isolated from Pollen Typhae had the ability to raise tPA and PGI2 productions by cultured porcine aortic endothelial cells (EC). In this paper we reported that F.IV was divided chemically into four subfractions named SubF.1-4 among them SubF.2-2 was further separated from SubF.2, and SubF.4-1 from SubF.4. The six subfractions were tested for their effects on the productions of tPA (125I-fibrin plate method) and PGI2(RIA) by porcine endothelial cells. The results showed that SubF.3 could enhance tPA activity and SubF.2-2 could increase PGI2 level. With Chrono-Log 500 Lumi-Aggregometer, SubF.1,2-2 and 3 were found to be able to inhibit platelet aggregation and release reaction. These data indicated that the mechanisms of Pollen Typhae in its antiatherosclerotic effects were multiple which resulted from various biologic effects exerted by various components of this drug. Chemical analyses were performed and their structures were identified, demonstrating that SubF.2-2 was a flavonoid, while SubF.3 was a group of flavonoids, implying there are some antiatherogenic components in flavonoids.
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Affiliation(s)
- J Zhao
- Shanghai Institute of Hematology, People's Republic of China
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21
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Xu DM, Xu YJ. [Recent advances in studying the chemical constituents of Panax ginseng C.A. Mey]. Zhongguo Zhong Yao Za Zhi 1989; 14:323-6, 381. [PMID: 2511854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The paper reports a survey of the chemical constituents of Panax ginseng, emphasizing ginseng saponin, polysaccharide, essential oil, and polypeptide, with 30 references.
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Xu DM. [Alkaloid constituents in the leaves and stems of Fritillaria ussuriensis]. Zhong Yao Tong Bao 1986; 11:40-1. [PMID: 2952324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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23
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Xu DM. [Treatment of radiation reaction with He-Ne laser irradiation of acupuncture spots]. Zhonghua Fang She Xue Za Zhi 1983; 17:286-8. [PMID: 6233120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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24
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Xu DM, Zhang B, Xiao YW. [Studies on chemical constituents of pingpeimu (Fritilaria ussuriensis Maxim). II. Isolation and identification of pingpeimine glucoside]. Yao Xue Xue Bao 1983; 18:868-70. [PMID: 6679981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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25
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Zhao J, Zhang CY, Xu DM, Wang ZY. Preventive effects of pollen typhae and Radix Salviae Miltiorrhizae in atherogenesis. Inhibition on proliferation of aortic smooth muscle cells in culture. J TRADIT CHIN MED 1983; 3:177-83. [PMID: 6556401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
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26
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Xu DM, Zhang B, Li HR, Xu ML. [Isolation and identification of alkaloids from Fritillalia ussuriensis Maxim]. Yao Xue Xue Bao 1982; 17:355-9. [PMID: 7180468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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