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Deng ZS, Liu XD, Zhang BC, Jiao S, Qi XY, Sun ZH, He XL, Liu YZ, Li J, Chen KK, Lin ZX, Jiang YY. The Root Endophytic Fungi Community Structure of Pennisetum sinese from Four Representative Provinces in China. Microorganisms 2019; 7:microorganisms7090332. [PMID: 31505744 PMCID: PMC6780252 DOI: 10.3390/microorganisms7090332] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 09/04/2019] [Accepted: 09/07/2019] [Indexed: 11/17/2022] Open
Abstract
Pennisetum sinese is a good forage grass with high biomass production and crude proteins. However, little is known about the endophytic fungi diversity of P. sinese, which might play an important role in the plant’s growth and biomass production. Here, we used high throughput sequencing of the Internal Transcribed Spacer (ITS) sequences based on primers ITS5-1737 and ITS2-2043R to investigate the endophytic fungi diversity of P. sinese roots at the maturity stage, as collected from four provinces (Shaanxi province, SX; Fujian province, FJ; the Xinjiang Uyghur autonomous prefecture, XJ and Inner Mongolia, including sand (NS) and saline-alkali land (NY), China). The ITS sequences were processed using QIIME and R software. A total of 374,875 effective tags were obtained, and 708 operational taxonomic units (OTUs) were yielded with 97% identity in the five samples. Ascomycota and Basidiomycota were the two dominant phyla in the five samples, and the genera Khuskia and Heydenia were the most abundant in the FJ and XJ samples, respectively, while the most abundant tags in the other three samples could not be annotated at the genus level. In addition, our study revealed that the FJ sample possessed the highest OTU numbers (242) and the NS sample had the lowest (86). Moreover, only 22 OTUs were present in all samples simultaneously. The beta diversity analysis suggested a division of two endophytic fungi groups: the FJ sample from the south of China and the other four samples from north or northwest China. Correlation analysis between the environmental factors and endophytic fungi at the class level revealed that Sordariomycetes and Pucciniomycetes had extremely significant positive correlations with the total carbon, annual average precipitation, and annual average temperature, while Leotiomycetes showed an extremely significant negative correlation with quick acting potassium. The results revealed significant differences in the root endophytic fungi diversity of P. sinese in different provinces and might be useful for growth promotion and biomass production in the future.
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Affiliation(s)
- Zhen-Shan Deng
- College of Life Sciences, Yan'an University, Yan'an 716000, China.
| | - Xiao-Dong Liu
- College of Life Sciences, Yan'an University, Yan'an 716000, China.
| | - Bao-Cheng Zhang
- School of Biological and Agricultural Science and Technology, Zunyi Normal College, Zunyi 53602, China.
| | - Shuo Jiao
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling 712100, Shaanxi, China.
| | - Xiang-Ying Qi
- College of Life Sciences, Yan'an University, Yan'an 716000, China.
| | - Zhi-Hong Sun
- College of Life Sciences, Yan'an University, Yan'an 716000, China.
| | - Xiao-Long He
- College of Life Sciences, Yan'an University, Yan'an 716000, China.
| | - Yu-Zhen Liu
- College of Life Sciences, Yan'an University, Yan'an 716000, China.
| | - Jing Li
- College of Life Sciences, Yan'an University, Yan'an 716000, China.
| | - Kai-Kai Chen
- College of Life Sciences, Yan'an University, Yan'an 716000, China.
| | - Zhan-Xi Lin
- National Engineering Research Center of Juncao, Fuzhou 350002, China.
| | - Ying-Ying Jiang
- College of Life Sciences, Yan'an University, Yan'an 716000, China.
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Abstract
Hepatitis B virus (HBV) infection remains to be a serious public health problem in China. There used to be a high prevalence of HBV infection in China, which resulted in a large number of HBV susceptible and post-infected population. Single anti-HBc positive usually indicates post HBV infection and its prevalence is particularly high among people over 40 years old, some of whom may be occult hepatitis B virus infection (OBI). The clinical diagnosis of OBI is difficult and easily missed. Since OBI may cause chronic liver disease progression and even lead to cirrhosis and hepatocellular carcinoma eventually, and more importantly, patients with OBI may leed to HBV reactivation when the immune function decreases or immunosuppressive therapy is performed, the accurate identify of OBI is of particular importance. Moreover, OBI is the potential source of HBV infection, which may transmit through blood transfusion, organ transplantation and mother-to-child transmission. In view of this situation, we reviewed the mechanism, prevalence and definition of OBI, and proposed a determination system for replication-competent HBV DNA based on our understanding of the updated OBI definition. It is expected to be beneficial for OBI diagnosis, treatment and management.
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Affiliation(s)
- F M Lu
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University, Beijing 100191, China
| | - H Liao
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University, Beijing 100191, China
| | - Y Z Liu
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, Peking University, Beijing 100191, China
| | - X G Dou
- Department of Infectious Diseases, Shengjing Hospital of China Medical University, Shenyang 110021, China
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Liu YZ, Hai Y, Zhang XN, Yin P, Liu T, Ding HT, Han CF, Han B, Tao LM, Guan L. [Comparison of cortical bone trajectory screw fixation and pedicle screw fixation in posterior lumbar fusion]. Zhonghua Yi Xue Za Zhi 2019; 99:1473-1478. [PMID: 31137137 DOI: 10.3760/cma.j.issn.0376-2491.2019.19.008] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the efficacy and safety of cortical screw fixation in posterior lumbar spine fixation with cortical bone trajectory (CBT) fixation or pedicle screw (PS) fixation in posterior lumbar fusion. Methods: It was a prospective study and CBT or PS for the treatment of lumbar disease from August 2015 to August 2017 in Beijing Chaoyang Hospital were analyzed. There were 53 males and 51 females, aged 56-78 years (mean age, (67±5) years). The patient's gender, age, operative time, intraoperative blood loss, postoperative bleeding, postoperative hospital stay, and postoperative patient satisfaction were collected. The Oswestry disability index (ODI) and visual analogue scale (VAS) of back pain were used to evaluate preoperative and half-year, one-year and two-year postoperative function and quality of life. Complications such as wound infection, cage displacement, screw extraction and fixation fracture were compared between the two groups. The data of normal distribution were compared with Student t test between the two groups. Results: There was no significant difference in the operation time between the CBT group (n=50) and the PS group (n=54) ((223±17) min vs (221±16) min, t=0.74, P=0.46). The intraoperative blood loss and wound drainage volume were significantly lower in the CBT group than those in the PS screw group (t=-24.20, -57.62, both P<0.05). The average length of hospital stay in the CBT group was significantly shorter than that in the PS group (t=-7.65, P=0.00). Patients with CBT screws had better postoperative satisfaction than patients in PS group (91±6 vs 86±7, t=3.89, P=0.00). The ODI score in the CBT group was significantly lower than that in the PD screw group half a year after the operation (3.9±1.9 vs 5.8±3.1, t=-3.66, P=0.00). The VAS and ODI scores in the CBT group were significantly lower than those in the PS group 1 year after the surgery (t=-3.03, -4.09, both P<0.05). There was no significant differences in wound infection, cage displacement, screw extraction and fixation fracture between the two groups. Conclusion: CBT screw technique is minimally invasive, with short operation time, less intraoperative blood loss, rapid postoperative recovery and low complications. It can be effectively used in posterior lumbar cone fusion.
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Affiliation(s)
- Y Z Liu
- Department of Orthopedics, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
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Li S, Liu YZ, Huang H, Zhang Q, Fang CL, Xu ZJ. [The role of histone deacetylases in the pathogenesis of idiopathic pulmonary fibrosis and cryptogenic organizing pneumonia]. Zhonghua Jie He He Hu Xi Za Zhi 2019; 42:361-366. [PMID: 31137112 DOI: 10.3760/cma.j.issn.1001-0939.2019.05.009] [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 role of histone deacetylases(HDAC) in the pathogenesis of idiopathic pulmonary fibrosis(IPF) and cryptogenic organizing pneumonia(COP). Methods: Fifteen IPF patients [14 males and 1female, age 40-73 years, mean age (59±8) years] and 15 COP patients [5 males and 10 females, age 41-71 years, mean age (59±8) years] from Peking Union Medical College Hospital were recruited from March 2018 to October 2018. Fifteen healthy donors[4 males and 11females, age 43-70 years, mean age (58±6) years] were enrolled as controls. Peripheral blood mononuclear cells (PBMC) were isolated by density gradient centrifugation. The nuclear and cytoplasmic proteins were extracted by Nuclear Extraction Kit. HDAC activity was measured by fluorimetric method. The relations between HDAC activity and clinical parameters were analyzed with SPSS. Results: The HDAC activity of cytoplasmic protein and nuclear protein from patients with IPF were (724±216) nmol/L and (2 309±708) nmol/L, which were higher than that of health controls (409±105) nmol/L and (1 572±611) nmol/L (P<0.01 for both). So as to the HDAC activity of cytoplasmic protein and nuclear protein from patients with COP which were (718±245) nmol/L and (3 310±1 005) nmol/L (P<0.01 for both).The HDAC activity of nuclear protein from COP patients was higher than that from IPF patients (Z=-2.840, P=0.005). The HDAC activity of nuclear protein was negatively correlated with FEV(1) and D(L)CO in IPF patients (r=-0.574, P=0.025; r=-0.583, P=0.029), and negatively correlated with FVC and TLC in COP patients(r=-0.846, P=0.016; r=-0.900, P=0.015). Conclusion: HDAC may be involved in the pathogenesis of COP and IPF.
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Affiliation(s)
- S Li
- Department of Pulmonary Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Y Z Liu
- Department of Infection and Clinical Microbiology, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - H Huang
- Department of Pulmonary Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Q Zhang
- Department of Pulmonary Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - C L Fang
- Department of Pulmonary Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Z J Xu
- Department of Pulmonary Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
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Sun Q, Huang YB, Li B, Liu YZ, Chen G. [Preliminary application of one-step hybrid operation in the treatment of carotid artery occlusion]. Zhonghua Yi Xue Za Zhi 2019; 99:943-946. [PMID: 30917446 DOI: 10.3760/cma.j.issn.0376-2491.2019.12.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the prognosis and surgical complication of the recanalization treatments for internal carotid artery (ICA) occlusion by using one-step hybrid carotid endarterectomy and endovascular surgery. Methods: Retrospective analysis was performed on the clinical data and follow-up data of 22 patients with occluded ICA treated by one-step hybrid surgery. Difference in Barthel score and occurrence of ischemic stroke were compared with surgical group and conventional group which was treated by oral taking anti-platelet drugs. Further, the complications were analyzed to evaluate the safety and effectiveness of the surgery. Results: The difference in ischemic event rate and Barthel scores improvement between the two groups were significant. Occlusive ICAs in 19 cases were recanalized successfully. The possibility of brain hyperperfusion related to the surgery was 10.5% (2/19) while the possibility of carotid artery cavernous fistula was 9.1% (2/22). We also observed rare dissecting ICA caused by the treatment (4.5%) and distal restenosis (5.3%). Conclusions: One-step hybrid carotid endarterectomy and endovascular surgery could help recanalize the ICA, improve the blood supply and improve the prognosis. It's a safe and effective treatment for ICA occlusion.
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Affiliation(s)
- Q Sun
- Department of Surgery, the First Affiliated Hospital of Soochow University, Suzhou 215006, China
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Lin Y, Shen W, Liu Y, Wang Q, Chen Q, Fang Z, Chi W, Gan X, Liu YZ. Visual preconditioning reduces emergence delirium in children undergoing ophthalmic surgery: a randomised controlled trial. Br J Anaesth 2018; 121:476-482. [PMID: 30032888 DOI: 10.1016/j.bja.2018.03.033] [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: 10/24/2017] [Revised: 03/11/2018] [Accepted: 04/25/2018] [Indexed: 10/16/2022] Open
Abstract
BACKGROUND Emergence delirium is a common complication in children, especially in preschool children undergoing ophthalmic surgery. The aim of the study was to investigate the effects of visual preconditioning (application of an eyepatch over the eye to be operated for ≥3 h the day before surgery) on emergence delirium after ophthalmic surgery under sevoflurane anaesthesia. METHODS One hundred and seventy-nine children undergoing unilateral cataract surgery, aged 3-7 yr, were involved in this prospective, blinded, randomised study. Subjects were randomised to receive visual preconditioning (Group P, n=89) or to receive programmed explanation the day before surgery (Group C, n=90). The primary outcome was incidence of emergence delirium evaluated by the paediatric anaesthesia emergence delirium (PAED) scale. The secondary outcomes included emergence time and post-anaesthesia care unit (PACU) stay time. RESULTS Children in Group P had a significantly lower incidence of emergence delirium than those in Group C [16.9% vs 44.4%, odds ratio (OR) 4.0, 95% confidence interval (CI) 2.0 to 8.0]. The maximal PAED score was lower in Group P than in Group C [4 (0-20) vs 9 (0-20), median difference -3.0, 95% CI -5.0 to -1.0]. Visual preconditioning prolonged emergence time (P<0.001) and PACU stay time (P=0.002). CONCLUSION Visual disturbance contributes to emergence delirium in preschool children undergoing ophthalmic surgery with sevoflurane, and prophylactic eyepatch treatment can reduce emergence delirium. CLINICAL TRIALS REGISTRATION NCT02590744.
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Affiliation(s)
- Y Lin
- Department of Anaesthesiology, State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - W Shen
- Department of Anaesthesiology, State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Y Liu
- Department of Anaesthesiology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Q Wang
- Department of Anaesthesiology, State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Q Chen
- Department of Anaesthesiology, State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Z Fang
- Department of Anaesthesiology and Perioperative Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - W Chi
- Department of Cataract, State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - X Gan
- Department of Anaesthesiology, State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong, China.
| | - Y Z Liu
- Department of Cataract, State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong, China
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Liu YZ, Xie JY. [Precision medicine in FSGS: gene diagnosis strategy and its clinical significance]. Zhonghua Yi Xue Za Zhi 2018; 98:1057-1059. [PMID: 29690720 DOI: 10.3760/cma.j.issn.0376-2491.2018.14.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
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Song XY, Huang H, Liu YZ, Li S, Zhao YY, Xu ZJ. [The plasma level and gene expression in peripheral blood of interleukin-35 in patients with sarcoidosis and its clinical significance]. Zhonghua Jie He He Hu Xi Za Zhi 2018; 41:32-36. [PMID: 29343013 DOI: 10.3760/cma.j.issn.1001-0939.2018.01.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the expression of interleukin(IL)-35 protein and gene in peripheral blood of patients with sarcoidosis and its clinical significance. Methods: Peripheral blood samples from 98 patients with sarcoidosis and 98 healthy volunteers were collected at Peking Union Medical College Hospital between January 2016 and March 2017. The plasma levels of IL-35 were detected by enzyme-linked immunosorbent assays (ELISA), and the relationship between IL-35 and the clinical characteristics was analyzed. Real-time quantitative PCR was used to detect the expression levels of IL-35 subunit EBI3, p35 and T regulatory cell transcription factor Foxp3 mRNA in peripheral blood mononuclear cells, and their correlations were analyzed. Results: The plasma levels of IL-35 in patients with sarcoidosis (44±12) ng/L was significantly lower than that in the normal control group (55±12) ng/L (P<0.001). There was a positive correlation between the plasma levels of IL-35 and D(L)CO% predicted values (r=0.76, P<0.001), but it showed no significantly correlation with other clinical parameters. The expression of EBI3 and Foxp3 mRNA in peripheral blood mononuclear cells of patients with sarcoidosis (1.54±0.74, 0.92±0.36) were significantly lower than those in the normal control group respectively (2.12±0.61, 1.10±0.27, all P<0.05). There was a significant positive correlation between the expression of EBI3 and Foxp3 mRNA in the sarcoidosis group (r=0.786, P<0.001). Conclusion: IL-35 may be involved in the inflammatory process of sarcoidosis and play an important role in the pathogenesis of the disease.
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Affiliation(s)
- X Y Song
- Department of Pulmonary Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
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Guo C, Yang RJ, Jang K, Zhou XL, Liu YZ. Protective Effects of Pretreatment with Quercetin Against Lipopolysaccharide-Induced Apoptosis and the Inhibition of Osteoblast Differentiation via the MAPK and Wnt/β-Catenin Pathways in MC3T3-E1 Cells. Cell Physiol Biochem 2017; 43:1547-1561. [PMID: 29035884 DOI: 10.1159/000481978] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [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: 01/08/2017] [Accepted: 08/18/2017] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIMS Quercetin, a flavonoid found in onions and other vegetables, has potential inhibitory effects on bone resorption in vivo and in vitro. In our previous study, we found that quercetin treatment reversed lipopolysaccharide (LPS)-induced inhibition of osteoblast differentiation through the mitogen-activated protein kinase (MAPK) pathway in MC3T3-E1 cells. In this study, we investigated the underlying mechanisms of pretreatment with quercetin on apoptosis and the inhibition of osteoblast differentiation in MC3T3-E1 cells induced by LPS. METHODS MC3T3-E1 osteoblasts were treated with quercetin for 2 h; cells were then incubated with LPS in the presence of quercetin for the indicated times. Cell viability was measured using the Cell Counting Kit-8 (CCK-8) assay, and cell apoptosis was evaluated using Hoechst 33258 staining. The mRNA expression levels of osteoblast-specific genes, Bax and caspase-3 were determined by real-time quantitative polymerase chain reaction (qPCR). Protein levels of osteoblast-specific genes, caspase-3, Bax, cytochrome c, Bcl-2, Bcl-XL, phosphorylated MAPKs and Wnt/β-catenin were measured using Western blot assays. The MAPK and Wnt/β-catenin signalling pathways were blocked prior to pretreatment with quercetin. RESULTS Pretreatment with quercetin significantly restored LPS-suppressed bone mineralization and the mRNA and protein expression levels of osteoblast-specific genes such as Osterix (OSX), runt-related transcription factor 2 (Runx2), alkaline phosphatase (ALP) and osteocalcin (OCN) in a dose-dependent manner. Pretreatment with quercetin also inhibited osteoblast apoptosis, significantly restored the down-regulated expression of Bcl-2 and Bcl-XL and decreased the upregulated expression of caspase-3, Bax, and cytochrome c in MC3T3-E1 cells induced by LPS. Furthermore, pretreatment with quercetin not only decreased the abundance of phosphorylated p38 MAPK and increased the abundance of phosphorylated extracellular signal regulated kinase (ERK), but also triggered the Wnt/β-catenin pathway through enhancing expression of Wnt3 and β-catenin. Pretreatment with MAPK inhibitors or the Wnt/β-catenin inhibitor XAV939 blocked the protective effects of quercetin against LPS-induced apoptosis and the inhibition of osteoblast differentiation. CONCLUSIONS Our findings suggest that pretreatment with quercetin may be a potential drug for preventing abnormal human bone loss induced by LPS in bacteria-induced bone diseases.
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Affiliation(s)
- Chun Guo
- Henan Key Laboratory of Neural Regeneration, the First Affiliated Hospital of Xinxiang Medical University, Nanchong, China.,Department of Orthopedics, the First Affiliated Hospital of Henan University, Nanchong, China
| | - Rui-Juan Yang
- Henan Key Laboratory of Neural Regeneration, the First Affiliated Hospital of Xinxiang Medical University, Nanchong, China
| | - Ke Jang
- Department of Orthopedics, Affiliated Hospital of North Sichuan Medical College, Nanchong, China
| | - Xiao-Ling Zhou
- Henan Key Laboratory of Neural Regeneration, the First Affiliated Hospital of Xinxiang Medical University, Nanchong, China
| | - Yu-Zhen Liu
- Henan Key Laboratory of Neural Regeneration, the First Affiliated Hospital of Xinxiang Medical University, Nanchong, China
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Wu XH, Cao QZ, Hu YX, Lin JN, Lin HT, Chen WR, Liu YZ. [Clinical characteristics and surgical effect observation of congenital aniridia combined with cataract]. Zhonghua Yan Ke Za Zhi 2017; 53:821-827. [PMID: 29141386 DOI: 10.3760/cma.j.issn.0412-4081.2017.11.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To analyze the clinical manifestations, surgical approaches and postoperative prognosis for the cases of congenital aniridia combined with cataract. Methods: In this retrospective case series, 26 patients diagnosed with congenital aniridia combined with cataract were collected from Zhongshan Ophthalmic Center from February 2002 to August 2016. The Clinical data were collected to analyze the clinical features, surgical approaches and postoperative prognosis. T-test was used for statistical analysis. Results: Twenty-six bilateral congenital aniridia patients were included in the case series, with 50% male cases. The average age for the first visit was (8.72±8.06) years old. Hereditary patients constitutes 30.8% (8/26) of the total number. The proportions for bilateral and unilateral cataracts were 88.5% (23/26) and 11.5% (3/26) respectively, and 49 eyes suffering from both congenital aniridia and cataract were therefore included in the final analysis. The most common morphology cataract subtypes were lamellar cataract (24.5%, 12/49), posterior subcapsular cataract (22.4%, 11/49), and total cataract (18.4%,9/49). The observed ocular comorbidities included nystagmus (36.7%, 18/49), vitreous opacity (28.6%, 14/49), foveal hypoplasia (20.4%, 10/49), ametropia (12.2%, 6/49), exotropia (12.2%, 6/49), congenital glaucoma (12.2%, 6/49), esotropia (4.1%, 2/49), congenital ptosis (4.1%, 2/49), lens ectopia (4.1%, 2/49), scleral staphyloma (2.0%, 1/49) and pigmentary degeneration of retina (2.0%, 1/49). 30.6% (15/49) eyes were performed the cataract extraction surgery. The percentage of postoperative best corrected visual acuity (BCVA) for ≥0.1 and ≥0.3 were 93.3% (14/15) and 20.0% (3/15) respectively. Evaluated ocular pressure (33.3%, 5/15), severe posterior capsular opacification (PCO) (13.3%, 2/15) and choroidal hemorrhage combined with choroidal detachment (6.7%, 1/15) were detected as the postoperative complications. Followed by cataract extraction, 80.0% (12/15) eyes were sequentially performed the intraocular lens implantation, while, 20.0% (3/12) eyes remained aphakia due to ocular comorbidities. Conclusions: Congenital aniridia combined with cataract are rare diseases, calling for the precious retrospective researches. This disorder tended to affect both eyes and occurred hereditary. The clinical courses of the cases presented progressive features. Ocular comorbidities were the crucial factors to influence the surgical approaches and postoperative prognosis. (Chin J Ophthalmol, 2017, 53: 821-827).
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Affiliation(s)
- X H Wu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong, 510060, China
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Bang YJ, Xu RH, Chin K, Lee KW, Park SH, Rha SY, Shen L, Qin S, Xu N, Im SA, Locker G, Rowe P, Shi X, Hodgson D, Liu YZ, Boku N. Olaparib in combination with paclitaxel in patients with advanced gastric cancer who have progressed following first-line therapy (GOLD): a double-blind, randomised, placebo-controlled, phase 3 trial. Lancet Oncol 2017; 18:1637-1651. [PMID: 29103871 DOI: 10.1016/s1470-2045(17)30682-4] [Citation(s) in RCA: 203] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 08/04/2017] [Accepted: 08/07/2017] [Indexed: 12/27/2022]
Abstract
BACKGROUND Olaparib combined with paclitaxel has previously shown a significant improvement in overall survival versus placebo plus paclitaxel as second-line therapy in a phase 2 study in Asian patients with advanced gastric cancer, especially in those with ataxia-telangiectasia mutated protein (ATM)-negative tumours. Here, we report the primary efficacy and safety analyses from a subsequent phase 3 trial. METHODS This double-blind, randomised, placebo-controlled, phase 3 study (GOLD) recruited Asian patients aged 18 years or older (≥20 years if Japanese) with advanced gastric cancer that had progressed following, or during, first-line chemotherapy. Patients were randomly assigned (1:1) to receive oral olaparib (100 mg twice daily) plus paclitaxel (80 mg/m2 intravenously) or matching placebo plus paclitaxel. Randomisation was done through an interactive voice response system and no stratification factors were used. Patients and investigators were masked to treatment allocation. Two co-primary populations were assessed: the overall population of all patients and patients whose tumours were ATM-negative (identified after randomisation, before the data cutoff date, March 28, 2016). The primary endpoint in both populations was overall survival (defined as the time from the date of randomisation until death from any cause before data cutoff); a significant difference was defined as p<0·025. Efficacy was assessed in the intention-to-treat populations and safety in patients who received at least one dose of treatment. This trial is registered with ClinicalTrials.gov, number NCT01924533 (study ID, D081BC00004), and is ongoing but no longer recruiting participants. FINDINGS Between Sept 3, 2013, and March 28, 2016, 643 patients were enrolled from 58 study sites in hospitals and medical centres in China, Japan, South Korea, and Taiwan. 525 eligible patients were randomly assigned: 263 to receive olaparib plus paclitaxel and 262 to receive placebo plus paclitaxel. 94 patients were determined to have ATM-negative tumours before unmasking for the primary analysis (48 in the olaparib plus paclitaxel group and 46 in the placebo plus paclitaxel group). Overall survival did not differ between treatment groups in the overall patient population (median overall survival 8·8 months [95% CI 7·4-9·6] in the olaparib group vs 6·9 months [6·3-7·9] in the placebo group; HR 0·79 [97·5% CI 0·63-1·00]; p=0·026) or in the ATM-negative population (12·0 months [7·8-18·1] vs 10·0 months [6·4-13·3]; 0·73 [0·40-1·34]; p=0·25). In the overall patient population, the most common grade 3 or worse adverse events in the olaparib plus paclitaxel group were neutropenia (78 [30%] of 262 patients), leucopenia (42 [16%]), and decreased neutrophil count (40 [15%]); in the placebo plus paclitaxel group, they were neutropenia (59 [23%] of 259 patients), leucopenia (27 [10%]), and decreased white blood cell count (21 [8%]). Adverse events with an outcome of death causally related to study treatment (according to investigator assessment) were reported in two patients: liver injury in one patient (<1%) in the olaparib plus paclitaxel group and cardiac failure in one patient (<1%) in the placebo plus paclitaxel group. INTERPRETATION The GOLD study did not meet its primary objective of showing a significant improvement in overall survival with olaparib in the overall or ATM-negative population of Asian patients with advanced gastric cancer. The study generated informative efficacy and safety data regarding the use of olaparib in combination with a chemotherapeutic agent and provides a foundation for future studies in this difficult-to-treat patient population. FUNDING AstraZeneca.
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Affiliation(s)
- Yung-Jue Bang
- Department of Internal Medicine, Cancer Research Institute, Seoul National University College of Medicine, Seoul, South Korea.
| | - Rui-Hua Xu
- Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Keisho Chin
- The Cancer Institute Hospital of the Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Keun-Wook Lee
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Gyeonggi-do, South Korea
| | - Se Hoon Park
- Samsung Medical Center, Sungkyunkwan University, Seoul, South Korea
| | - Sun Young Rha
- Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, South Korea
| | - Lin Shen
- Department of Gastrointestinal Oncology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, Beijing, China
| | | | - Nong Xu
- The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Seock-Ah Im
- Department of Internal Medicine, Cancer Research Institute, Seoul National University College of Medicine, Seoul, South Korea
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Mao YN, Zeng LX, Li YH, Liu YZ, Wu JY, Li L, Wang Q. [Significance and expression of PAX8, PAX2, p53 and RAS in ovary and fallopian tubes to origin of ovarian high grade serous carcinoma]. Zhonghua Fu Chan Ke Za Zhi 2017; 52:687-696. [PMID: 29060967 DOI: 10.3760/cma.j.issn.0529-567x.2017.10.008] [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 origin of ovarian high grade serous carcinoma (HGSC) through analysing the expression and significance of PAX8, PAX2, p53 and RAS in the ovary and fallopian tube of different types and grades of serous carcinoma. Methods: A total of 44 cases tissue samples of ovarian tumor including 34 malignant ovarian tumor and 10 normal normal tissue (as control group) were collected from the admitted patients in Affiliated Tumor Hospital of Guangxi Medical University from January 2015 to January 2016. Fallopian tube tissues were segmented in accordance with the fimbria, ampulla, isthmus and the corresponding ovarian tissues were by the side. There were 34 cases of patients with ovarian cancer including 29 cases of epithelial ovarian cancer (27 serous carcinoma, 1 mucinous carcinoma,1 endometrioid adenocarcinoma) and 5 non-epithelial ovarian cancer (sex cord-interstitial tumor). Among 27 cases of patients with ovarian serous cancer, there were 23 HGSC and 4 low-grade ovarian serous cancer (LGSC). One hundred fifty-three cases of samples were diagnosed as ovarian serous cancer by Shandong University Affiliated Qilu Hospital from 2005 to 2013 and these samples were made tissue microarray. (1) To analyze the expression and differences of PAX8, PAX2, p53 and RAS in the above tissues and tissue microarray from ovarian and tubal of HGSC and control women by immunohistochemistry methods. (2) To compare the expression levels of PAX8, PAX2, p53 and RAS in ovarian and fallopian tubes of ovarian cancer patients with different pathological types. (3) To analyze the correlations of tubal and ovarian tissue in PAX8, PAX2, p53 and RAS expression of HGSC. (4) To analyze the factors of the prognosis of ovarian serous cancer in tissue microarray by single factor analysis method. Results: (1) PAX8, PAX2, p53 and RAS expression was negative in normal ovarian epithelium of control group, but the expression of PAX8, PAX2, p53 and RAS were strongly positive brown in secrete cells of normal fallopian tube epithelium. (2) p53 and RAS expression of fallopian tube epithelium in the epithelial ovarian cancer group were significantly higher than those in the non-epithelial ovarian cancer groups (P<0.05), but the expression of PAX8 and PAX2 in fallopian tube and the expression of PAX8, PAX2, p53 and RAS in ovarian tissue was not statistically significant in the groups (P>0.05). PAX8, PAX2 and p53 expression of the ovarian in HGSC group were significantly higher than those in LGSC group (P<0.05), while the expression of RAS was lower in the ovarian of the high-grade group (P<0.05), while the expression of PAX8, PAX2, p53 and RAS in fallopian tube was not statistically significant in the groups (P>0.05). (3) There was a significantly positive correlation between fallopian tube and the corresponding ovary of HGSC in PAX8 and PAX2 expression (r=0.422, P=0.045; r=0.693, P=0.000), but not correlation in p53 and RAS expression (r=0.058, P=0.793; r= -0.190, P=0.384). (4) Univariate survival analysis showed that the progression free survival time in patients with ovarian serous cancer group was significantly correlated with the protein expression of PAX8, PAX2 and RAS (P<0.05), but there were not correlated with age, surgical staging, cell differentiation, lymph node metastasis and preoperative chemotherapy and p53 protein expression (P>0.05). The total survival time in patients with ovarian serous cancer group was significantly correlated with the protein expression of PAX8 (P<0.05), but there were not correlated with age,surgical staging, cell differentiation, lymph node metastasis and preoperative chemotherapy and the protein expression of PAX2, RAS and p53 (P>0.05). Conclusions: PAX8, PAX2, p53, RAS are of great significance for the study of origin of HGSC. HGSC may be derived from fallopian tube, but further investigation would be necessary to confirm this. PAX8, PAX2, p53, RAS could be expected to be used as predictors of survival prognosis in patients with ovarian serous cancer.
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Affiliation(s)
- Y N Mao
- Laboratory of Early Prevention and Treatment for Regional High Frequence Tumor Ministry of Education Key Laboratory, Affiliated Tumor Hospital, Guangxi Medical University, Nanning 530021, China
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Kindon N, Andrews G, Baxter A, Cheshire D, Hemsley P, Johnson T, Liu YZ, McGinnity D, McHale M, Mete A, Reuberson J, Roberts B, Steele J, Teobald B, Unitt J, Vaughan D, Walters I, Stocks MJ. Discovery of AZD-2098 and AZD-1678, Two Potent and Bioavailable CCR4 Receptor Antagonists. ACS Med Chem Lett 2017; 8:981-986. [PMID: 28947948 DOI: 10.1021/acsmedchemlett.7b00315] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Accepted: 09/01/2017] [Indexed: 01/20/2023] Open
Abstract
N-(5-Bromo-3-methoxypyrazin-2-yl)-5-chlorothiophene-2-sulfonamide 1 was identified as a hit in a CCR4 receptor antagonist high-throughput screen (HTS) of a subset of the AstraZeneca compound bank. As a hit with a lead-like profile, it was an excellent starting point for a CCR4 receptor antagonist program and enabled the rapid progression through the Lead Identification and Lead Optimization phases resulting in the discovery of two bioavailable CCR4 receptor antagonist candidate drugs.
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Affiliation(s)
- Nicholas Kindon
- AstraZeneca R&D Charnwood, Bakewell Road, Loughborough, LE11 5RH, U.K
| | - Glen Andrews
- AstraZeneca R&D Charnwood, Bakewell Road, Loughborough, LE11 5RH, U.K
| | - Andrew Baxter
- AstraZeneca R&D Charnwood, Bakewell Road, Loughborough, LE11 5RH, U.K
| | - David Cheshire
- AstraZeneca R&D Charnwood, Bakewell Road, Loughborough, LE11 5RH, U.K
| | - Paul Hemsley
- AstraZeneca R&D Charnwood, Bakewell Road, Loughborough, LE11 5RH, U.K
| | - Timothy Johnson
- AstraZeneca R&D Charnwood, Bakewell Road, Loughborough, LE11 5RH, U.K
| | - Yu-Zhen Liu
- AstraZeneca R&D Charnwood, Bakewell Road, Loughborough, LE11 5RH, U.K
| | - Dermot McGinnity
- AstraZeneca R&D Charnwood, Bakewell Road, Loughborough, LE11 5RH, U.K
| | - Mark McHale
- AstraZeneca R&D Charnwood, Bakewell Road, Loughborough, LE11 5RH, U.K
| | - Antonio Mete
- AstraZeneca R&D Charnwood, Bakewell Road, Loughborough, LE11 5RH, U.K
| | - James Reuberson
- AstraZeneca R&D Charnwood, Bakewell Road, Loughborough, LE11 5RH, U.K
| | - Bryan Roberts
- AstraZeneca R&D Charnwood, Bakewell Road, Loughborough, LE11 5RH, U.K
| | - John Steele
- AstraZeneca R&D Charnwood, Bakewell Road, Loughborough, LE11 5RH, U.K
- Respiratory, Inflammation and Autoimmunity, Innovative
Medicines and Early Development, AstraZeneca Gothenburg, Pepparedsleden
1, SE-431 83 Mölndal, Sweden
| | - Barry Teobald
- AstraZeneca R&D Charnwood, Bakewell Road, Loughborough, LE11 5RH, U.K
| | - John Unitt
- AstraZeneca R&D Charnwood, Bakewell Road, Loughborough, LE11 5RH, U.K
| | - Deborah Vaughan
- AstraZeneca R&D Charnwood, Bakewell Road, Loughborough, LE11 5RH, U.K
| | - Iain Walters
- AstraZeneca R&D Charnwood, Bakewell Road, Loughborough, LE11 5RH, U.K
| | - Michael J. Stocks
- AstraZeneca R&D Charnwood, Bakewell Road, Loughborough, LE11 5RH, U.K
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Li XQ, Liu YZ, Guo WF, Solanki MK, Yang ZD, Xiang Y, Ma ZC, Wen YG. The gall wasp Leptocybe invasa (Hymenoptera: Eulophidae) stimulates different chemical and phytohormone responses in two Eucalyptus varieties that vary in susceptibility to galling. Tree Physiol 2017; 37:1208-1217. [PMID: 28938058 DOI: 10.1093/treephys/tpx098] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Accepted: 07/22/2017] [Indexed: 05/18/2023]
Abstract
Gall-inducing insects produce various types of galls on plants, but little is known about the gall-induction mechanism of these galling insects. The gall wasp Leptocybe invasa Fisher & LaSalle (Hymenoptera: Eulophidae) forms galls of different sizes on several Eucalyptus species. To clarify the physiological responses of Eucalyptus to L. invasa infestation, we measured the dynamics of nitrogen (N), carbon (C), total phenolics, total tannins and four types of phytohormones (zeatin [Z] + zeatin riboside [ZR], gibberellins [GA], indole-3-acetic acid [IAA] and abscisic acid [ABA]) in galled and ungalled leaf tissues of two Eucalyptus horticultural varieties (DH201-2 [Eucalyptus grandis × Eucalyptus camaldulensis] and EA [Eucalyptus exserta]) with different susceptibility to galling throughout the larval developmental stages. Nitrogen, total phenolics, tannins and four kinds of phytohormones strongly accumulated in tissues galled by L. invasa (especially during early larval feeding stages). While N, Z + ZR and GA levels were higher, tannins and ABA levels were lower in the galled tissues on the highly susceptible variety. Nitrogen, total phenolics, GA, Z + ZR and IAA levels in the galled tissues gradually decreased during gall development, but ABA and tannins conversely increased in the galled tissues of the less susceptible variety. Our results suggest that the effects of gall-inducing insects on plants depend not only on the susceptibility of the plant infested but also on the developmental stage of galled tissues. Gall formation process is thus synergistically influenced by both gall-inducing insect and plant genotypes.
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Affiliation(s)
- X Q Li
- Guangxi Key Laboratory of Forest Ecology and Conservation, College of Forestry, Guangxi University, Nanning 530004, Guangxi, China
| | - Y Z Liu
- Guangxi Key Laboratory of Forest Ecology and Conservation, College of Forestry, Guangxi University, Nanning 530004, Guangxi, China
| | - W F Guo
- Guangxi Key Laboratory of Forest Ecology and Conservation, College of Forestry, Guangxi University, Nanning 530004, Guangxi, China
- Guangxi Crop Genetic Improvement and Biotechnology Lab, Guangxi Academy of Agricultural Sciences, Nanning 530007, Guangxi, China
| | - M K Solanki
- Guangxi Key Laboratory of Forest Ecology and Conservation, College of Forestry, Guangxi University, Nanning 530004, Guangxi, China
| | - Z D Yang
- Guangxi Key Laboratory of Forest Ecology and Conservation, College of Forestry, Guangxi University, Nanning 530004, Guangxi, China
| | - Y Xiang
- Guangxi Key Laboratory of Forest Ecology and Conservation, College of Forestry, Guangxi University, Nanning 530004, Guangxi, China
| | - Z C Ma
- Guangxi Key Laboratory of Forest Ecology and Conservation, College of Forestry, Guangxi University, Nanning 530004, Guangxi, China
| | - Y G Wen
- Guangxi Key Laboratory of Forest Ecology and Conservation, College of Forestry, Guangxi University, Nanning 530004, Guangxi, China
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Liu YZ, Xie JY, Chen N. [Genetic diagnosis strategy of focal segmental glomerulosclerosis]. Zhonghua Nei Ke Za Zhi 2017; 56:624-627. [PMID: 28789499 DOI: 10.3760/cma.j.issn.0578-1426.2017.08.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
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Feng J, Qi B, Guo L, Chen LY, Wei XF, Liu YZ, Zhao BS. miR-382 functions as a tumor suppressor against esophageal squamous cell carcinoma. World J Gastroenterol 2017; 23:4243-4251. [PMID: 28694664 PMCID: PMC5483498 DOI: 10.3748/wjg.v23.i23.4243] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/01/2017] [Revised: 03/14/2017] [Accepted: 03/31/2017] [Indexed: 02/06/2023] Open
Abstract
AIM To explore the effect of miR-382 on esophageal squamous cell carcinoma (ESCC) in vitro and its possible molecular mechanism.
METHODS Eca109 cells derived from human ESCC and Het-1A cells derived from human normal esophageal epithelium were used. Lentivirus-mediated miR-382 was overexpressed in Eca109 cells. The effect of miR-382 on cell proliferation was evaluated by MTT and colony formation assay. For cell cycle analysis, cells were fixed and stained for 30 min with propidium iodide (PI) staining buffer containing 10 mg/mL PI and 100 mg/mL RNase A, and analyzed by BD FACSCalibur™ flow cytometer. For cell apoptosis assay, cells were stained with an Annexin V-FITC/PI Apoptosis Detection Kit according to the manufacturer’s instructions and analyzed by a dual-laser flow cytometer. Cell invasion and migration abilities were determined through use of transwell chambers, non-coated or pre-coated with matrigel. Levels of proteins related to cell growth and migration were examined by western blotting.
RESULTS Endogenous miR-382 was down-regulated in Eca109 cells compared with Het-1A. Introduction of miR-382 not only significantly inhibited proliferation and colony formation, but also arrested cell cycle at the G2/M phase, as well as promoted apoptosis and autophagy in Eca109 cells. Migration, invasion and epithelial-mesenchymal transition of Eca109 cells were suppressed by overexpressing miR-382. Western blotting results showed that miR-382 inhibited the phosphorylation of mTOR and 4E-BP1.
CONCLUSION miR-382 functions as a tumor suppressor against ESCC development and metastasis, and could be considered as a potential drug source for the treatment of ESCC patients.
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Chen XW, Yu TJ, Zhang J, Li Y, Chen HL, Yang GF, Yu W, Liu YZ, Liu XX, Duan CF, Tang HL, Qiu M, Wang CL, Zheng H, Yue J, Guo AM, Yang J. CYP4A in tumor-associated macrophages promotes pre-metastatic niche formation and metastasis. Oncogene 2017; 36:5045-5057. [PMID: 28481877 PMCID: PMC5582214 DOI: 10.1038/onc.2017.118] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [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: 08/11/2016] [Revised: 03/07/2017] [Accepted: 03/23/2017] [Indexed: 12/13/2022]
Abstract
Tumor-associated macrophages (TAMs) play an essential role in metastasis. However, what enables TAMs to have a superior capacity to establish pre-metastatic microenvironment in distant organs is unclear. Here we have begun to uncover the effects of cytochrome P450 (CYP) 4A in TAMs on lung pre-metastatic niche formation and metastasis. CYP4A+ TAM infiltration was positively associated with metastasis, pre-metastatic niche formation and poor prognosis in breast cancer patients. The pharmacological inhibition of CYP4A reduced lung pre-metastatic niche formation (evidenced by a decrease in vascular endothelial growth factor receptor 1 positive (VEGFR1+) myeloid cell recruitment and pro-metastatic protein expression) and metastatic burden, accompanied with TAM polarization away from the M2 phenotype in spontaneous metastasis models of 4T1 breast cancer and B16F10 melanoma. Co-implantation of 4T1 cells with CYP4A10high macrophages promoted lung pre-metastatic niche formation and metastasis. Depletion of TAMs disrupted lung pre-metastatic niches and thereby prevented metastasis. Treatment with the CM from CYP4A10high M2 macrophages (M2) increased pre-metastatic niche formation and metastatic burden in the lungs, whereas CYP4A inhibition attenuated these effects. In vitro TAM polarization away from the M2 phenotype induced by CYP4A inhibition decreased VEGFR1+ myeloid cell migration and fibronectin expression, accompanied with downregulation of STAT3 signaling. Conversely, overexpression of CYP4A or exogenous addition of 20-hydroxyeicosatetraenoic acid promoted M2 polarization and cytokine production of macrophages and thereby enhanced migration of VEGFR1+ myeloid cells, which were reversed by siRNA or pharmacological inhibition of STAT3. Importantly, a combined blocking M2 macrophage-derived factors TGF-β, VEGF and SDF-1 abolished VEGFR1+ myeloid cell migration and fibroblast activation induced by CYP4A. In summary, CYP4A in TAMs is crucial for lung pre-metastatic niche formation and metastasis, and may serve as a potential therapeutic target in human cancer.
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Affiliation(s)
- X W Chen
- Department of Pharmacology, School of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - T J Yu
- Department of Pharmacology, School of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - J Zhang
- Animal Experimental Center of Wuhan University, Wuhan, China
| | - Y Li
- Department of Pharmacology, School of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - H L Chen
- Department of Pathology and Pathophysiology, School of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - G F Yang
- Department of Pathology, Zhongnan Hospital, Wuhan University, Wuhan, China
| | - W Yu
- Department of Oncology, The First College of Clinical Medicine, China Three Gorges University, Yichang, China
| | - Y Z Liu
- Department of Pharmacology, School of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - X X Liu
- Department of Pharmacology, School of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - C F Duan
- Department of Pharmacology, School of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - H L Tang
- Department of Pharmacology, School of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - M Qiu
- Department of Pharmacology, School of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - C L Wang
- Department of Pharmacology, School of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - H Zheng
- Department of Pharmacology, School of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - J Yue
- Department of Pharmacology, School of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - A M Guo
- Department of Pharmacology, New York Medical College, Valhalla, NY, USA
| | - J Yang
- Department of Pharmacology, School of Basic Medical Sciences, Wuhan University, Wuhan, China
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Song XY, Huang H, Liu YZ, Zhao YY, Li S, Xu ZJ. [Coexistence of sarcoidosis and primary Sjögren syndrome: a clinical analysis and literature review]. Zhonghua Nei Ke Za Zhi 2017; 56:375-377. [PMID: 28460510 DOI: 10.3760/cma.j.issn.0578-1426.2017.05.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Four patients with coexistence of sarcoidosis and primary Sjögren syndrome (pSS) were retrospectively analyzed.All patients were female, who were referred to our department mainly because of respiratory symptoms.Positive antinuclear antibody(ANA) was detected in 2 patients and anti-Sjögrens syndrome A (SSA) antibody positive in 1 patient.All patients presented specific histologic patterns of both sarcoidosis and pSS.Publications related to coexistence of these two diseases were reviewed.Forty-one patients were finally included in the analysis, among whom 37 confirmed patients were from literature search.There were 37 women and 4 men.The main clinical features presentation were xerophthalmia in 40, xerostomia in 38, hilaradenopathies in 28, interstitial lung disease in 15, respiratory symptoms in 13.The main immunologic data were positive ANA in 23, SSA antibody in 19, anti-Sjögrens syndrome B antibody in 10 and rheumatoid factor in 12.All patients presented specific histologic patterns of both diseases.Patients with both sarcoidosis and pSS of ten represent multisystemic involvement and positive immunologic parameters, as well as the dual expression of specific histologic characteristics.
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Affiliation(s)
- X Y Song
- Department of Pulmonary Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
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Jiang SX, Qi B, Yao WJ, Gu CW, Wei XF, Zhao Y, Liu YZ, Zhao BS. Berberine displays antitumor activity in esophageal cancer cells in vitro. World J Gastroenterol 2017; 23:2511-2518. [PMID: 28465635 PMCID: PMC5394514 DOI: 10.3748/wjg.v23.i14.2511] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Revised: 01/06/2017] [Accepted: 03/02/2017] [Indexed: 02/06/2023] Open
Abstract
AIM To investigate the effects of berberine on esophageal cancer (EC) cells and its molecular mechanisms.
METHODS Human esophageal squamous cell carcinoma cell line KYSE-70 and esophageal adenocarcinoma cell line SKGT4 were used. The effects of berberine on cell proliferation were evaluated using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. For cell cycle progression, KYSE-70 cells were stained with propidium iodide (PI) staining buffer (10 mg/mL PI and 100 mg/mL RNase A) for 30 min and cell cycle was analyzed using a BD FACSCalibur flow cytometer. For apoptosis assay, cells were stained with an Annexin V-FITC/PI apoptosis detection kit. The rate of apoptotic cells was analyzed using a dual laser flow cytometer and estimated using BD ModFit software. Levels of proteins related to cell cycle and apoptosis were examined by western blotting.
RESULTS Berberine treatment resulted in growth inhibition of KYSE-70 and SKGT4 cells in a dose-dependent and time-dependent manner. KYSE-70 cells were more susceptible to the inhibitory activities of berberine than SKGT4 cells were. In KYSE-70 cells treated with 50 μmol/L berberine for 48 h, the number of cells in G2/M phase (25.94% ± 5.01%) was significantly higher than that in the control group (9.77% ± 1.28%, P < 0.01), and berberine treatment resulted in p21 up-regulation in KYSE-70 cells. Flow cytometric analyses showed that berberine significantly augmented the KYSE-70 apoptotic population at 12 and 24 h post-treatment, when compared with control cells (0.83% vs 43.78% at 12 h, P < 0.05; 0.15% vs 81.86% at 24 h, P < 0.01), and berberine-induced apoptotic effect was stronger at 24 h compared with 12 h. Western blotting showed that berberine inhibited the phosphorylation of Akt, mammalian target of rapamycin and p70S6K, and enhanced AMP-activated protein kinase phosphorylation in a sustained manner.
CONCLUSION Berberine is an inhibitor of human EC cell growth and could be considered as a potential drug for the treatment of EC patients.
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Chen XL, Hai Y, Guan L, Liu YZ, Yang JC, Su QJ, Kang N, Meng XL, Yang L, Wang Y. [Topping-off surgery versus double-segment fusion for treatment of lumbar degenerative disease with mid-long term follow-up]. Zhonghua Yi Xue Za Zhi 2017; 97:857-863. [PMID: 28355743 DOI: 10.3760/cma.j.issn.0376-2491.2017.11.013] [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] [Key Words] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Objective: To compare the mid-long term clinical effect of Topping-off surgery and lumbar fusion surgery for two-segmental lumbar degenerative disease. Methods: From March 2009 to March 2012, one hundred and twenty-six consecutive patients (Topping-off surgery and two-segment PLIF surgery) were studied in Orthopedics Department, Beijing Chao-Yang Hospital, Capital Medical University.The VAS and ODI were used to assess clinical symptoms.All patients underwent flexion/extension radiographs examinations before surgery, 1, 2 years and last follow-up postoperatively.Lumbar lordosis, sacral slop, data of Coflex segment and adjacent segment (disc height index, range of motion, foraminal height, foraminal width and Pfirrmann classification of intervertebral disc in MRI) were recorded.The paired double-tailed t test was used to analyze the differences in the results from baseline to each postoperative time point.The paired double-tailed t test was used in both groups to analyze the differences in the results from baseline to each postoperative time point.The Chi-square test was used to evaluate the differences between the incidences of adjacent segment degeneration(ASD) in the groups. Logistic regression analysis was used to analyze risk factors for developing radiographic ASD. Results: In topping-off group, 60 patients, average operation time was (134.5±10.2) min. The average blood loss was (301.5±64.6) ml.In fusion group, 68 patients, average age (58.3±4.6) years.The average follow-up time was (47.5±5.1) months.The average operation time was (158.6±19.3) min (P=0.000). The average blood loss was (413.6±131.3) ml (P=0.000). Sex, age, body mass index and intervertebral disc grading were matched between the two groups.Better improvement in VAS back pain score was noted in the topping-off group over the fusion group (P=0.030). Both groups achieved good recovery in ODI and improvement in VAS leg pain and back pain scores at last follow-up postoperatively.In the Topping-off group, FH increased from 10.5 mm at baseline to 11.8 mm at 1 year after surgery (P=0.000) and then decreased mildly in the third postoperative year, while in the fusion group, showed no significant change at all postoperative time points.In the fusion group, the disc height and FW at the same segment were no significant change after first year follow-up, while ROM was significantly decreased after surgery (P=0.000). Foraminal height, foraminal width and intervertebral disc height of adjacent segment of Coflex implant level were found decreased at the end of the postoperative follow-up, while compared with preoperative data no significant difference (P>0.05). At last follow-up, eight patients (13.3%) in the Topping-off group and eighteen patients (26.5%) in the fusion group developed ASD (P=0.033). Conclusions: Topping-off surgery compared with two-segment lumbar fusion surgery can achieve a good result in cases with pre-existing mild or moderate adjacent segment degeneration, restrict the adjacent segment's range of motion and reduce the adjacent segment degeneration. Under strict indications, Topping-off surgery is an acceptable alternative to fusion surgery for the treatment of two-segment lumbar disease.
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Affiliation(s)
- X L Chen
- Department of Orthopedics, Beijing Chao-yang Hospital, Capital Medical University, Beijing 100020, China
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He M, Wang H, Z Liu Y, Gao WJ, Gao YH, Wang F, Zhou YW. Cloning and characterization of ChiMYB in Chrysanthemum indicum with an emphasis on salinity stress tolerance. Genet Mol Res 2016; 15:gmr8985. [PMID: 27706784 DOI: 10.4238/gmr.15038985] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
v-myb avianmyeloblastosis viral oncogene homolog (MYB) transcription factors are key regulators of stress responsive gene expression in plants. In this study, the MYB gene, ChiMYB (GenBank accession No. KT948997), was isolated from Chrysanthemum indicum, and was functionally characterized with an emphasis on salinity stress tolerance. The full ChiMYB cDNA sequence (948 bp) encoded a typical R2R3 MYB transcription factor that contained 315 amino acid residues and two MYB domains. The temporal expression pattern of ChiMYB was noted in C. indicum, and the highest level was detected in the roots, followed by leaves and stems. ChiMYB expression was induced by NaCl treatments, and transient expression of the fusion of ChiMYB and green fluorescent protein (GFP) indicated that the protein was targeted to the nuclei of onion epidermal cells. Arabidopsis plants overexpressing ChiMYB displayed improved tolerance to drought and salt stress. When under salt stress conditions, transgenic Arabidopsis plants had higher survival rates than non-transgenic wild-type plants. Chlorophyll content, intercellular CO2 concentration, photosynthetic rate, and stomatal conductance were higher in the transgenic Arabidopsis plants than in non-transgenic control plants. Further investigation revealed that ChiMYB was able to regulate the expression of RD29A, RAB18, COR15, ABI1, and ABA genes, which are involved in salt stress signaling pathways. Our findings demonstrated that ChiMYB is essential for plant responses to salt stress, and it may have great potential for the improvement of salt tolerance in crops.
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Affiliation(s)
- M He
- College of Landscape Architecture, Northeast Forestry University, Harbin, China
| | - H Wang
- College of Landscape Architecture, Northeast Forestry University, Harbin, China
| | - Y Z Liu
- College of Landscape Architecture, Beijing Forestry University, Beijing, China
| | - W J Gao
- College of Landscape Architecture, Northeast Forestry University, Harbin, China
| | - Y H Gao
- College of Landscape Architecture, Beijing Forestry University, Beijing, China
| | - F Wang
- College of Landscape Architecture, Northeast Forestry University, Harbin, China
| | - Y W Zhou
- College of Landscape Architecture, Northeast Forestry University, Harbin, China
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Liu YZ, Ye ZH, Yang WL, Zhu JX, Lu QJ, Su WL. [Carpal canal ultrasound examination in patients with mild hand-arm vibration disease]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2016; 34:608-611. [PMID: 27682671 DOI: 10.3760/cma.j.issn.1001-9391.2016.08.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the clinical value of ultrasound examination of carpal canal structure in patients with mild hand-arm vibration disease. Methods: A total of 29 patients (58 wrists) with mild hand-arm vibration disease who were treated in Shenzhen Prevention and Treatment Center for Occupational Diseases from May to December, 2015 were enrolled as observation group, and 20 healthy volunteers (40 wrists) were enrolled as the control group. Color Doppler ultrasound was used to observe the morphology and echo of the median nerve in the carpal canal and 9 muscle tendons and transverse carpal ligament. The thickness of transverse carpal ligament and diameter of the median nerve at the level of the hamulus of hamate bone were measured, as well as the cross-sectional area of the median nerve at the level of pisiform bone. Results: In the 29 patients with hand-arm vibration disease patients in the observation group, 8 experienced entrapment of the median nerve in the carpal canal, among whom 5 had entrapment in both wrists; there were 13 wrists (23%) with nerve entrapment and 45 wrists (77%) without nerve entrapment. Compared with the control group, the patients with hand-arm vibration disease and nerve entrapment in the observation group showed significant thickening of the transverse carpal ligament at the level of the hamulus of hamate bone and a significant increase in the cross-sectional area of the median nerve at the level of pisiform bone (P<0.05) , while there were no significant differences in the thickness of transverse carpal ligament at the level of the hamulus of hamate bone and the cross-sectional area of the median nerve at the level of pisiform bone (t=-9.397 and -4.385, both P>0.05) . Conclusion: Ultrasound examination can clearly show the radiological changes of carpal canal contents in patients with mild hand-arm vibration disease and has a certain diagnostic value in nerve damage in patients with hand-arm vibration disease.
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Affiliation(s)
- Y Z Liu
- Department of Ultrasonography, Shenzhen Prevention and Treatment Center for Occupational Diseases, Shenzhen 518020, China
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Guan L, Wang WL, Hai Y, Liu YZ, Chen XL, Chen L. [Clinical outcome of mid-term follow-up of anterior cervical non-fusion surgery versus anterior cervical discectomy and fusion for cervical spondylosis]. Zhonghua Yi Xue Za Zhi 2016; 96:1991-6. [PMID: 27470956 DOI: 10.3760/cma.j.issn.0376-2491.2016.25.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To evaluate the clinical and radiological outcomes of artificial cervical disc replacement (Prodisc-C), dynamic cervical implant and anterior cervical discectomy and fusion (ACDF) in the treatment of cervical spondylosis. METHOD From May 2011 to May 2013, a total of 44 cervical spondylosis patients that received cervical disc arthroplasty (Prodisc-C), dynamic cervical implant (DCI) or ACDF were retrospectively reviewed in Orthopedics Department, Beijing Chaoyang Hospital, Capital Medical University.The patients were divided into three groups by surgical methods.Parameters as gender, age, the operation time, blood loss and average hospital stay of three groups were compared.The patients were followed 3 months, 6 months, 12 months and 24 months postoperatively.Neck disability index (NDI), Japanese Orthopaedic Association (JOA) Score and Visual Analogue Scale (VAS) were used to evaluate the clinical outcomes of the three groups.We also measured the cervical lordosis, range of motion of surgical segment and adjacent segment and height of disc at pre-op and post-op. RESULT All the patients were got at least 24 months follow-up.The differences between postoperative JOA, NDI and VAS scores and preoperative scores were of statistical significance (P<0.05). There was no statistical difference in average hospital stay, JOA, NDI and VAS recovery rate (P>0.05) among three groups.But the operative time and intraoperative blood loss were statistically different (P<0.05). Compared the pre-and postoperative ROM of C2-7, operative, upper and lower levels of each group respectively, the difference between pre-and postoperative ROM of ACDF group were of statistically significant [(16.6±3.6)°, (22.3±4.6)°, (18.1±3.1)°, P<0.05], while was no statistically significant of non-fusion group(P>0.05). There was no statistically significant difference between pre-and postoperative ROM of upper and lower levels among three groups (P>0.05), but had statistically difference in operative levels [(7.0±1.0) mm, (9.2±1.5) mm, (6.8±1.4) mm, P<0.05]. And there are no serious postoperative complications. CONCLUSION Two cervical non-fusion surgery and ACDF have received good clinical effects in the treatment of spondylotic myelopathy or radicular spondylosis.The artificial cervical disc replacement and dynamic cervical implant can not only recover cervical lordosis and keep the range of motion and stability of the surgical segment, but also reduce the incidence of compensatory motion at adjacent segments and will prevent from adjacent segment degeneration.
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Affiliation(s)
- L Guan
- Orthopedics Department, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
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75
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Wang DY, Cui YS, Liu YZ, Liu LN, Song YP, Fang BJ. [Successful treatment of one case with relapsed refractory multiple myeloma by chidamide in combination with bortezomib and dexamethasone]. Zhonghua Xue Ye Xue Za Zhi 2016; 37:463. [PMID: 27431068 PMCID: PMC7348341 DOI: 10.3760/cma.j.issn.0253-2727.2016.06.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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76
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Liu YZ, Liu YL. [One case of Horner's syndrome after thyroid gland operation]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2016; 30:832-833. [PMID: 29798067 DOI: 10.13201/j.issn.1001-1781.2016.10.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Indexed: 11/12/2022]
Abstract
The patient find the nodule unintentionally for 2 weeks, painless, no voice hoarse, no swallowing and drinking difficulties. no dizziness, no fatigue, no tremor of the hand, no irritability,no palpitations, no fever chills, no nausea, no vomiting, no chest tightness, no shortness of breath and other discomfort.Ultrasonic report:The size of thyroid was normal, and was scattered in the middle of the right lobe with a large solid echo of about 12 mm×7 mm. The left lobe of the thyroid gland was found to have an echo of the size of about 10 mm×7 mm,the shape was irregular,the boundary was unclear, lymph nodes with no obvious swelling in the neck. CDFI: right lobe of the thyroid low echo mass surrounding the actuate color flow, short rod color flow; left thyroid lobe inferior echo mass around and see the short rod color flow.Diagnose:nodular goiter;subacute thyroiditis;Hornor's symptoms.
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77
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Liu YZ. [Objective evaluation the application of femtosecond laser in cataract surgery]. Zhonghua Yan Ke Za Zhi 2016; 52:81-4. [PMID: 26906700 DOI: 10.3760/cma.j.issn.0412-4081.2016.02.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Femtosecond laser-assisted cataract surgery (FLACS) is a novel technology and the biggest revolution in the field of cataract in the latest several years. However, increasing large-scale population randomized controlled trials (RCT) have demonstrated that FLACS does not provide significant advantages over conventional phacoemulsification cataract surgery (CPCS) for common cataract patients. Furthermore, the cost and space requirement of the femtosecond equipment are another two limitations for the universal application of FSL in cataract surgery. However, FLACS may be beneficial for complex cataract situations, such as lens dislocation, zonular laxity, traumatic cataract, low preoperative endothelial cell values, and significant corneal astigmatism. With the progress of science and technology, FLACS can be expected to achieve integration with phacoemulsification systems, and equipment costs can be reduced, making it more widely used in clinical practice in the future.
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Affiliation(s)
- Y Z Liu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China
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78
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Zang L, Fan N, Hai Y, Lu SB, Su QJ, Yang JC, Guan L, Kang N, Meng XL, Liu YZ. Evaluation of the predictors of postoperative aggravation of shoulder imbalance in severe and rigid thoracic or thoracolumbar scoliosis. Eur Spine J 2015; 25:3353-3365. [PMID: 26538156 DOI: 10.1007/s00586-015-4313-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Revised: 10/27/2015] [Accepted: 10/27/2015] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To study the predictors of postoperative aggravation of shoulder imbalance in severe and rigid thoracic or thoracolumbar scoliosis. METHODS In this study, 49 patients with severe and rigid thoracic or thoracolumbar scoliosis were analyzed retrospectively. The patients underwent whole-spine anteroposterior and lateral radiography preoperatively and postoperatively. On the radiographs, we measured parameters, including T1 tilt, radiographic shoulder height (RSH), proximal curve, middle curve, distal curve, apical vertebral translation (AVT) of the middle curve, thoracic trunk shift (TTS), coronal balance, and sagittal balance. We regarded RSH and T1 tilt as postoperative shoulder balance parameters and divided the patients into improved and aggravated groups of shoulder imbalance. Univariate analysis, receiver operating characteristic (ROC) curve, and multivariate logistic regression analyses were used in the statistical analyses. RESULTS The RSH was -17.01 ± 21.85 mm before surgery and 4.76 ± 18.11 mm at follow-up. The T1 tilt angle was -10.20° ± 19.53° before surgery and -2.72° ± 13.48° at follow-up. The results of the univariate analysis suggest that preoperative RSH and proximal to middle curve change ratio were significantly higher in the patients in the improved RSH group (p < 0.01). In addition, preoperative RSH, preoperative T1 tilt, and apical vertebral translation of the middle curve were significantly higher, and preoperative proximal curve, postoperative proximal curve, and preoperative distal curve were significantly lower in the patients with improved T1 tilt group (p < 0.01). In a binary logistic regression analysis, preoperative RSH [B = -0.120, odds ratio (OR) = 0.887, p = 0.006] was found to be an independent predictor of postoperative aggravation of RSH. Similarly, preoperative T1 tilt (B = -0.488, OR = 0.614, p = 0.001) was found to be an independent predictor of postoperative aggravation of T1 tilt. Moreover, the relationship between changes in RSH and T1 tilt was either concordant or discordant. CONCLUSION Several radiographic parameters were found to affect postoperative aggravation of RSH and T1 tilt. In particular, preoperative RSH and T1 tilt were found to be independent predictive factors of postoperative aggravation of RSH and T1 tilt, respectively.
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Affiliation(s)
- Lei Zang
- Department of Orthopedics, Beijing Chaoyang Hospital, Capital Medical University, GongTiNanLu 8#, Chaoyang District, Beijing, 100020, China
| | - Ning Fan
- Department of Orthopedics, Beijing Chaoyang Hospital, Capital Medical University, GongTiNanLu 8#, Chaoyang District, Beijing, 100020, China
| | - Yong Hai
- Department of Orthopedics, Beijing Chaoyang Hospital, Capital Medical University, GongTiNanLu 8#, Chaoyang District, Beijing, 100020, China.
| | - S B Lu
- Department of Orthopedics, Beijing Chaoyang Hospital, Capital Medical University, GongTiNanLu 8#, Chaoyang District, Beijing, 100020, China
| | - Q J Su
- Department of Orthopedics, Beijing Chaoyang Hospital, Capital Medical University, GongTiNanLu 8#, Chaoyang District, Beijing, 100020, China
| | - J C Yang
- Department of Orthopedics, Beijing Chaoyang Hospital, Capital Medical University, GongTiNanLu 8#, Chaoyang District, Beijing, 100020, China
| | - Li Guan
- Department of Orthopedics, Beijing Chaoyang Hospital, Capital Medical University, GongTiNanLu 8#, Chaoyang District, Beijing, 100020, China
| | - Nan Kang
- Department of Orthopedics, Beijing Chaoyang Hospital, Capital Medical University, GongTiNanLu 8#, Chaoyang District, Beijing, 100020, China
| | - X L Meng
- Department of Orthopedics, Beijing Chaoyang Hospital, Capital Medical University, GongTiNanLu 8#, Chaoyang District, Beijing, 100020, China
| | - Y Z Liu
- Department of Orthopedics, Beijing Chaoyang Hospital, Capital Medical University, GongTiNanLu 8#, Chaoyang District, Beijing, 100020, China
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Zhang WJ, Niven RM, Young SS, Liu YZ, Parker GJM, Naish JH. T1-weighted Dynamic Contrast-enhanced MR Imaging of the Lung in Asthma: Semiquantitative Analysis for the Assessment of Contrast Agent Kinetic Characteristics. Radiology 2015; 278:906-16. [PMID: 26491908 DOI: 10.1148/radiol.2015141876] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
PURPOSE To evaluate the contrast agent kinetics of dynamic contrast material-enhanced (DCE) magnetic resonance (MR) imaging in healthy lungs and asthmatic lungs by using non-model-based semiquantitative parameters and to explore the relationships with pulmonary function testing and eosinophil level. MATERIALS AND METHODS The study was approved by the National Research Ethical Committee (reference no. 11/NW/0387), and written informed consent was obtained from all individuals. Ten healthy subjects and 30 patients with asthma underwent pulmonary function tests, blood and sputum eosinophil counts, and 1.5-T DCE MR imaging within 7 days. Semiquantitative parameters of contrast agent kinetics were calculated from the relative signal intensity-time course curves on a pixel-by-pixel basis and were summarized by using whole-lung median values. The distribution heterogeneity was assessed by using the regional coefficient of variation. DCE MR imaging readouts were compared between groups by using one-way analysis of variance, and the relationships with pulmonary function testing and eosinophil counts were assessed by using Pearson correlation analysis. RESULTS Asthmatic patients showed significantly lower peak enhancement (P < .001) and initial areas under the relative signal intensity curve in the first 60 seconds (P = .002) and significantly reduced late-phase washout slope (P = .002) when compared with healthy control subjects. The distribution heterogeneity of bolus arrival time (P = .029), time to peak (P = .008), upslope of the first-pass peak (P = .011), and late-phase washout slope (P = .032), estimated by using the median coefficient of variation, were significantly higher in asthmatic patients than in healthy control subjects. These imaging readouts also showed significant linear correlations with measurements of pulmonary function testing but not with eosinophil level in patients with asthma. CONCLUSION The contrast agent kinetic characteristics of T1-weighted DCE MR images of asthmatic lungs are different from those of healthy lungs and are related to measurements of pulmonary function testing but not to eosinophil level.
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Affiliation(s)
- Wei-Juan Zhang
- From the Centre for Imaging Sciences (W.J.Z., G.J.M.P., J.H.N.) and Biomedical Imaging Institute (W.J.Z., G.J.M.P., J.H.N.), the University of Manchester, Oxford Rd, Manchester M13 9PT, England; North West Lung Research Centre, University Hospital of South Manchester, Manchester, England (R.M.N.); Personalised Healthcare and Biomarkers, AstraZeneca R&D, Macclesfield, England (S.S.Y., Y.Z.L.); and Bioxydyn Limited, Manchester, England (G.J.M.P.)
| | - Robert M Niven
- From the Centre for Imaging Sciences (W.J.Z., G.J.M.P., J.H.N.) and Biomedical Imaging Institute (W.J.Z., G.J.M.P., J.H.N.), the University of Manchester, Oxford Rd, Manchester M13 9PT, England; North West Lung Research Centre, University Hospital of South Manchester, Manchester, England (R.M.N.); Personalised Healthcare and Biomarkers, AstraZeneca R&D, Macclesfield, England (S.S.Y., Y.Z.L.); and Bioxydyn Limited, Manchester, England (G.J.M.P.)
| | - Simon S Young
- From the Centre for Imaging Sciences (W.J.Z., G.J.M.P., J.H.N.) and Biomedical Imaging Institute (W.J.Z., G.J.M.P., J.H.N.), the University of Manchester, Oxford Rd, Manchester M13 9PT, England; North West Lung Research Centre, University Hospital of South Manchester, Manchester, England (R.M.N.); Personalised Healthcare and Biomarkers, AstraZeneca R&D, Macclesfield, England (S.S.Y., Y.Z.L.); and Bioxydyn Limited, Manchester, England (G.J.M.P.)
| | - Yu-Zhen Liu
- From the Centre for Imaging Sciences (W.J.Z., G.J.M.P., J.H.N.) and Biomedical Imaging Institute (W.J.Z., G.J.M.P., J.H.N.), the University of Manchester, Oxford Rd, Manchester M13 9PT, England; North West Lung Research Centre, University Hospital of South Manchester, Manchester, England (R.M.N.); Personalised Healthcare and Biomarkers, AstraZeneca R&D, Macclesfield, England (S.S.Y., Y.Z.L.); and Bioxydyn Limited, Manchester, England (G.J.M.P.)
| | - Geoffrey J M Parker
- From the Centre for Imaging Sciences (W.J.Z., G.J.M.P., J.H.N.) and Biomedical Imaging Institute (W.J.Z., G.J.M.P., J.H.N.), the University of Manchester, Oxford Rd, Manchester M13 9PT, England; North West Lung Research Centre, University Hospital of South Manchester, Manchester, England (R.M.N.); Personalised Healthcare and Biomarkers, AstraZeneca R&D, Macclesfield, England (S.S.Y., Y.Z.L.); and Bioxydyn Limited, Manchester, England (G.J.M.P.)
| | - Josephine H Naish
- From the Centre for Imaging Sciences (W.J.Z., G.J.M.P., J.H.N.) and Biomedical Imaging Institute (W.J.Z., G.J.M.P., J.H.N.), the University of Manchester, Oxford Rd, Manchester M13 9PT, England; North West Lung Research Centre, University Hospital of South Manchester, Manchester, England (R.M.N.); Personalised Healthcare and Biomarkers, AstraZeneca R&D, Macclesfield, England (S.S.Y., Y.Z.L.); and Bioxydyn Limited, Manchester, England (G.J.M.P.)
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Chen GT, Han N, Li GF, Li X, Li G, Liu YZ, Wu W, Wang Y, Chen YX, Sun GX, Li ZC, Li QC. TNF-α mutation affects the gene expression profiles of patients with multiple trauma. EUR J INFLAMM 2015. [DOI: 10.1177/1721727x15588433] [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: 01/18/2023] Open
Abstract
Multiple trauma can induce sepsis and organ failure, even threaten people’s lives. To further study the mechanisms of multiple trauma, we analyzed microarray of GSE5760. GSE5760 was downloaded from the Gene Expression Omnibus including a total of 58 peripheral blood transcriptome from patients without (WT, n = 30) and carrying (MUT, n = 28) the tumor necrosis factor (TNF) rs1800629 A variant. The differentially expressed genes (DEGs) were screened using the limma package in R and the Benjamin and Hochberg method in a multi-test package. Then, functional enrichment analysis of DEGs was performed. Also, transcription factors significantly related to DEGs were searched using WebGestalt and interaction network of transcription factors and DEGs were constructed using STRING online software. Furthermore, pathway enrichment analysis for the DEGs in the interaction network was conducted using KO-Based Annotation System (KOBAS). We screened 39 DEGs including 27 upregulated and 12 downregulated genes. The enriched functions were associated with biological process (BP) (such as response to hypoxia, P value = 0.039803), cell components (CC) (such as mitochondrial part, P value = 0.043857), and molecular function (MF) (such as structural constituent of ribosome, P value = 0.008735). Besides, RPS7 and RPL17 were associated with ribosome and participated in ribosome pathway. PPP2R2B was related to mitochondrion. KCNMA1, ALAS2 and SOCS3 were associated with hypoxia. Moreover, transcription factors of LEF1, CHX10, ELK1, SP1, and MAZ were significantly related to DEGs. RPS7, RPL17, PPP2R2B, KCNMA1, ALAS2, and SOCS3 might relate to multiple trauma. And TNF-α mutation could cause sepsis in patients with multiple trauma by changing the expression of these genes.
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Affiliation(s)
- GT Chen
- Department of Emergency Surgery, East Hospital, Tongji University School of Medicine, Shanghai, PR China
| | - N Han
- Department of Emergency Surgery, East Hospital, Tongji University School of Medicine, Shanghai, PR China
| | - GF Li
- Department of Emergency Surgery, East Hospital, Tongji University School of Medicine, Shanghai, PR China
| | - X Li
- Department of Emergency Surgery, East Hospital, Tongji University School of Medicine, Shanghai, PR China
| | - G Li
- Department of Emergency Surgery, East Hospital, Tongji University School of Medicine, Shanghai, PR China
| | - YZ Liu
- Department of Emergency Surgery, East Hospital, Tongji University School of Medicine, Shanghai, PR China
| | - W Wu
- Department of Emergency Surgery, East Hospital, Tongji University School of Medicine, Shanghai, PR China
| | - Y Wang
- Department of Emergency Surgery, East Hospital, Tongji University School of Medicine, Shanghai, PR China
| | - YX Chen
- Department of Emergency Surgery, East Hospital, Tongji University School of Medicine, Shanghai, PR China
| | - GX Sun
- Department of Emergency Surgery, East Hospital, Tongji University School of Medicine, Shanghai, PR China
| | - ZC Li
- Department of Emergency Surgery, East Hospital, Tongji University School of Medicine, Shanghai, PR China
| | - QC Li
- Department of Emergency Surgery, East Hospital, Tongji University School of Medicine, Shanghai, PR China
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Qi B, Lu JG, Yao WJ, Chang TM, Qin XG, Ji YH, Wang TY, Liu SG, Li HC, Liu YZ, Zhao BS. Downregulation of microRNA-382 is associated with poor outcome of esophageal squamous cell carcinoma. World J Gastroenterol 2015; 21:6884-6891. [PMID: 26078564 PMCID: PMC4462728 DOI: 10.3748/wjg.v21.i22.6884] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Revised: 02/05/2015] [Accepted: 03/31/2015] [Indexed: 02/06/2023] Open
Abstract
AIM: To study the potential prognostic role of microRNA-382 (miR-382) in esophageal squamous cell carcinoma (ESCC).
METHODS: Forty six patients were divided into 2 groups according to postoperative survival time: the poor outcome group (28 patients), who showed early metastasis but no recurrence, and died within 1 year after surgery, 12 patients of the group received postoperative chemotherapy treatment that was given after early metastasis happening; the good outcome group (18 patients), who had no clinical metastasis and recurrence, and survived 5 years or more after surgery, all patients did not receive any postoperative treatment. Total RNA was extracted from the patients’ formalin-fixed and paraffin-embedded esophageal cancer tissues. miR-382 level was evaluated using high-throughput real-time quantitative polymerase chain reaction analysis. The correlation between miR-382 level and clinicopathologic features was analyzed through COX regression model, and Kaplan-Meier analysis was used to analyze the relationship between miR-382 level and patient survival time.
RESULTS: miR-382 was differentially expressed in the two groups. Overall the average miR-382 level in the ESCC patients with good outcome was 9.8 ± 3.8, while miR-382 level in the ESCC patients with poor outcome was 3.0 ± 0.8. The differences of miR-382 levels between two groups were significant (P < 0.05). Kaplan-Meier analysis results showed that miR-382 expression level generally had a significant reverse-correlation with ESCC patient survival time (P < 0.001), in which the patients with higher expressions of miR-382 had a longer survival time either among individuals with the same tumor stage or among the overall patients.
CONCLUSION: miR-382 levels are reverse-correlated with ESCC poor outcomes, suggesting that miR-382 could be a potential predictive biomarker for both prognosis and treatment of ESCC.
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Zhang WJ, Hubbard Cristinacce PL, Bondesson E, Nordenmark LH, Young SS, Liu YZ, Singh D, Naish JH, Parker GJM. MR Quantitative Equilibrium Signal Mapping: A Reliable Alternative to CT in the Assessment of Emphysema in Patients with Chronic Obstructive Pulmonary Disease. Radiology 2015; 275:579-88. [DOI: 10.1148/radiol.14132953] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Liu YZ, Wang K, Li X, Chen B. Type II diabetes patients with proteinuria and the recovery of their metabolic parameters. MINERVA ENDOCRINOL 2015:R07Y9999N00A150011. [PMID: 25812668] [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: 06/04/2023]
Abstract
OBJECTIVE To provide reasonable guidelines for type II diabetes patients with proteinuria to recover their metabolic parameters. METHODS A cross-sectional study was conducted in selected groups of type 2 diabetic patients. Hypoglycemic and antihypertensive drug use was recorded. Certain physical examinations were conducted including routine urine test, urinary albumin/creatinine ratio (ACR), metabolic parameters of blood glucose and lipid, and other biochemical indicators. Medication and metabolic indicators were compared between the groups based on the seriousness of the proteinuria. RESULTS A total of 923 cases were selected for this study, with an average age of 63 years. Based on the proteinuria contents, the cases were divided into three groups of proteinuria negative,microalbuminuria and clinical proteinuria.The recovery rates of the blood pressure control for the groups were 44.2%, 35.3% and 36.3% respectively. The glycated hemoglobin control recovery rates were 22.2%, 18.5% and 15.2% in the groups. The groups' triglyceride control satisfaction rates were 44.4%, 43.3%, and 39.8%. The satisfaction rates of total cholesterol control were 34.5%, 26.8% and 25.7% respectively and the satisfaction rates of LDL-c control of the three groups were 30.6%, 23.8% and 22.1%. This indicated an unregulated use of hypoglycemic agents, antihypertensivesand lipid-lowering drugs and low recovery rates for metabolic indicators of the cases. Amongst the 923 cases, 397 had microalbuminuria or clinical proteinuria, and only 22 patients took angiotensin converting enzyme inhibitors (ACEI) or angiotensin receptor blocker (ARB) as antihypertensive drugs. CONCLUSION The use of antihypertensive drugs is not standardized, and only a small portion of patients were treated with ACEI or ARB drugs. Therefore, the proteinuria in diabetic patients should be timely screened and evaluated, as well as renal and metabolic function and antihypertensives and lipid-lowering drugs rationally used.
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Affiliation(s)
- Y Z Liu
- Department of Metabolic Diseases and Nutritional Disorders, Affiliated Zhongshan Hospital of Dalian University, Zhongshan District, Dalian, Liaoning, P.R. China -
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84
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Zhang WJ, Niven RM, Young SS, Liu YZ, Parker GJM, Naish JH. Dynamic oxygen-enhanced magnetic resonance imaging of the lung in asthma -- initial experience. Eur J Radiol 2014; 84:318-26. [PMID: 25467640 DOI: 10.1016/j.ejrad.2014.10.021] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Revised: 10/21/2014] [Accepted: 10/25/2014] [Indexed: 11/19/2022]
Abstract
OBJECTIVES To prospectively estimate the feasibility and reproducibility of dynamic oxygen-enhanced magnetic resonance imaging (OE-MRI) in the assessment of regional oxygen delivery, uptake and washout in asthmatic lungs. MATERIALS AND METHODS The study was approved by the National Research Ethics Committee and written informed consent was obtained. Dynamic OE-MRI was performed twice at one month apart on four mild asthmatic patients (23±5 years old, FEV1=96±3% of predicted value) and six severe asthmatic patients (41±12 years old, FEV1=60±14% of predicted value) on a 1.5T MR scanner using a two-dimensional T1-weighted inversion-recovery turbo spin echo sequence. The enhancing fraction (EF), the maximal change in the partial pressure of oxygen in lung tissue (ΔPO2max_l) and arterial blood of the aorta (ΔPO2max_a), and the oxygen wash-in (τup_l, τup_a) and wash-out (τdown_l, τdown_a) time constants were extracted and compared between groups using the independent-samples t-test (two-tailed). Correlations between imaging readouts and clinical measurements were assessed by Pearson's correlation analysis. Bland-Altman analysis was used to estimate the levels of agreement between the repeat scans and the intra-observer agreement in the MR imaging readouts. RESULTS The severe asthmatic group had significantly smaller EF (70±16%) and median ΔPO2max_l (156±52mmHg) and significantly larger interquartile range of τup_l (0.84±0.26min) than the mild asthmatic group (95±3%, P=0.014; 281±40mmHg, P=0.004; 0.20±0.07min, P=0.001, respectively). EF, median ΔPO2max_l and τdown_l and the interquartile range of τup_l and τdown_l were significantly correlated with age and pulmonary function test parameters (r=-0.734 to -0.927, 0.676-0.905; P=0.001-0.045). Median ΔPO2max_l was significantly correlated with ΔPO2max_a (r=0.745, P=0.013). Imaging readouts showed good one-month reproducibility and good intra-observer agreement (mean bias between repeated scans and between two observations did not significantly deviate from zero). CONCLUSIONS Dynamic OE-MRI is feasible in asthma and sensitive to the severity of disease. The technique provides indices related to regional oxygen delivery, uptake and washout that show good one month reproducibility and intra-observer agreement.
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Affiliation(s)
- Wei-Juan Zhang
- Centre for Imaging Sciences, The University of Manchester, Oxford Road, Manchester M13 9PT, UK; Biomedical Imaging Institute, The University of Manchester, Oxford Road, Manchester M13 9PT, UK.
| | - Robert M Niven
- North West Lung Research Centre, University Hospital of South Manchester, Southmoor Road, Manchester M23 9LT, UK.
| | - Simon S Young
- Personalised Healthcare and Biomarkers, AstraZeneca R&D, Alderley Park, Macclesfield SK10 4TF, UK.
| | - Yu-Zhen Liu
- Personalised Healthcare and Biomarkers, AstraZeneca R&D, Alderley Park, Macclesfield SK10 4TF, UK.
| | - Geoffrey J M Parker
- Centre for Imaging Sciences, The University of Manchester, Oxford Road, Manchester M13 9PT, UK; Biomedical Imaging Institute, The University of Manchester, Oxford Road, Manchester M13 9PT, UK; Bioxydyn Limited, Rutherford House, Pencroft Way, Manchester M15 6SZ, UK.
| | - Josephine H Naish
- Centre for Imaging Sciences, The University of Manchester, Oxford Road, Manchester M13 9PT, UK; Biomedical Imaging Institute, The University of Manchester, Oxford Road, Manchester M13 9PT, UK.
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85
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Abstract
A mouse model of acute lung injury (ALI) was chosen in this study to explore the key genes and pathways involved in the process of ALI with microarray technology. Gene expression microarray data were downloaded from the Gene Expression Omnibus database. Mice from the experimental group were further divided into 6 subgroups, which received octadecenoate treatments for 1, 1.5, 3, 4, 18, and 24 h. Differentially co-expressed genes were screened to uncover the pathogenesis of ALI. Almost all of the differentially co-expressed genes were identified at two times: 1.5 and 3 h. Functional analysis revealed that several inflammation-related pathways were significantly enriched. Ubiquitin-mediated proteolysis, hematopoietic cell lineage, and leukocyte transendothelial migration were enriched at 1.5 h. The B cell receptor signaling pathway, T cell receptor signaling pathway, natural killer cell-mediated cytotoxicity, Fc epsilon RI signaling pathway, and ubiquitin-mediated proteolysis were significantly enriched at 3 h. It could be inferred that ALI initiated at 1.5 h and lasted through 3 h. However, co-expression patterns were not found from 4 h onward. In conclusion, several key genes and pathways implicated in the development of ALI were found in this study using the mouse model, among which ubiquitin-mediated proteolysis appears to play an important role in the process.
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Affiliation(s)
- Q H Han
- Department of Emergency and Trauma Surgery, East Hospital Affiliated to Tongji University, Shanghai, China
| | - N Han
- Department of Emergency and Trauma Surgery, East Hospital Affiliated to Tongji University, Shanghai, China
| | - Y Z Liu
- Department of Emergency and Trauma Surgery, East Hospital Affiliated to Tongji University, Shanghai, China
| | - Q H Jin
- Internal Medicine, Longhua Community Health Center, Shanghai, China
| | - Q Y Lu
- Department of Emergency and Trauma Surgery, East Hospital Affiliated to Tongji University, Shanghai, China
| | - Z C Li
- Department of Emergency and Trauma Surgery, East Hospital Affiliated to Tongji University, Shanghai, China
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86
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Chen X, Lu RF, Kan EJ, Liu YZ, Xiao CY, Deng KM. Theoretical study of CO oxidation on cationic, neutral, and anionic AuM dimers (M = Pd and Ag). J Mol Model 2014; 20:2313. [DOI: 10.1007/s00894-014-2313-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Accepted: 05/19/2014] [Indexed: 11/24/2022]
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87
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Ji SC, Pan YT, Lu QY, Sun ZY, Liu YZ. Screening of differentially expressed genes between multiple trauma patients with and without sepsis. Genet Mol Res 2014; 13:1855-64. [PMID: 24668673 DOI: 10.4238/2014.march.17.13] [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: 11/03/2022]
Abstract
The purpose of this study was to identify critical genes associated with septic multiple trauma by comparing peripheral whole blood samples from multiple trauma patients with and without sepsis. A microarray data set was downloaded from the Gene Expression Omnibus (GEO) database. This data set included 70 samples, 36 from multiple trauma patients with sepsis and 34 from multiple trauma patients without sepsis (as a control set). The data were preprocessed, and differentially expressed genes (DEGs) were then screened for using packages of the R language. Functional analysis of DEGs was performed with DAVID. Interaction networks were then established for the most up- and down-regulated genes using HitPredict. Pathway-enrichment analysis was conducted for genes in the networks using WebGestalt. Fifty-eight DEGs were identified. The expression levels of PLAU (down-regulated) and MMP8 (up-regulated) presented the largest fold-changes, and interaction networks were established for these genes. Further analysis revealed that PLAT (plasminogen activator, tissue) and SERPINF2 (serpin peptidase inhibitor, clade F, member 2), which interact with PLAU, play important roles in the pathway of the component and coagulation cascade. We hypothesize that PLAU is a major regulator of the component and coagulation cascade, and down-regulation of PLAU results in dysfunction of the pathway, causing sepsis.
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Affiliation(s)
- S C Ji
- Department of Emergency Surgery, Shanghai East Hospital, Shanghai, China
| | - Y T Pan
- Department of Emergency Surgery, Shanghai East Hospital, Shanghai, China
| | - Q Y Lu
- Department of Emergency Surgery, Shanghai East Hospital, Shanghai, China
| | - Z Y Sun
- Department of Emergency Surgery, Shanghai East Hospital, Shanghai, China
| | - Y Z Liu
- Department of Emergency Surgery, Shanghai East Hospital, Shanghai, China
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88
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Wang S, Liu YZ, Qin DD, Zou CC, Sheng YR, Huang AL, Tang H. Construction and functional identification of a hepatitis B virus S protein small hairpin RNA recombinant adenovirus. Genet Mol Res 2014; 13:3495-501. [PMID: 24634304 DOI: 10.4238/2014.february.25.4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Hepatitis B virus S protein (HBs) plays an important role in hepatocellular carcinoma progression. However, to date, no direct and effective methods exist to research the function of HBs. Here, we combined the technology of RNA interference with recombinant adenovirus, constructed a recombinant adenovirus-expressing small hairpin RNA of HBs, and infected HepG2.2.15 cells. Then, reverse transcription-polymerase chain reaction (RT-PCR), quantitative real-time PCR, enzyme-linked immunosorbent assay, and Western blot analysis were performed to verify the interference effects. As a result, a recombinant adenovirus was successfully constructed and effectively packaged in AD293 cells, and it significantly inhibited HBs mRNA and protein expression in vitro. Our study may provide a novel tool to study HBs function.
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Affiliation(s)
- S Wang
- Key Laboratory of Molecular Biology on Infectious Diseases, Ministry of Education, Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Y Z Liu
- Department of Forensic Medicine, Chongqing Medical University, Chongqing, China
| | - D D Qin
- Key Laboratory of Molecular Biology on Infectious Diseases, Ministry of Education, Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - C C Zou
- Key Laboratory of Molecular Biology on Infectious Diseases, Ministry of Education, Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Y R Sheng
- Key Laboratory of Molecular Biology on Infectious Diseases, Ministry of Education, Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - A L Huang
- Key Laboratory of Molecular Biology on Infectious Diseases, Ministry of Education, Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - H Tang
- Key Laboratory of Molecular Biology on Infectious Diseases, Ministry of Education, Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
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89
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Cheng JM, Liu YZ, Wang HW. Effects of surface-modified nano-scale carbon black on Cu and Zn fractionations in contaminated soil. Int J Phytoremediation 2014; 16:86-94. [PMID: 24912217 DOI: 10.1080/15226514.2012.759530] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Cu contamination soil (547 mg kg(-1)) was mixed separately with the surface-modified nano-scale carbon black (MCB) and placed in the ratios (w/w) of 0, 1%, 3%, and 5% in pots, together with 0.33 g KH2PO4 and 0.35 g urea/pot. Each pot contained 20 ryegrass seedlings (Lolium multiflorum). Greenhouse cultivation experiments were conducted to examine the effect of the MCB on Cu and Zn fractionations in soil, accumulation in shoot and growth of ryegrass. The results showed that the biomass of ryegrass shoot and root increased with the increasing of MCB adding amount (p < 0.05). The Cu and Zn accumulation in ryegrass shoot and the concentrations of DTPA extractable Cu and Zn in soil were significantly decreased with the increasing of MCB adding amount (p < 0.05). The metal contents of exchangeable and bound to carbonates (EC-Cu or EC-Zn) in the treatments with MCB were generally lower than those without MCB, and decreased with the increasing of MCB adding amount (p < 0.05). There was a positive linear correlation between the Cu and Zn accumulation in ryegrass shoot and the EC-Cu and EC-Zn in soil. The present results indicated the MCB could be applied for the remediation the soils polluted by Cu and Zn.
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90
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Gao Y, Liu YZ, Zhang XM, Zhou Y, Zhang X, Dong CY. Pharmacokinetic studies of bergapten in dog plasma by using a LC-MS/MS method studies. Drug Res (Stuttg) 2013; 63:338-41. [PMID: 23549759 DOI: 10.1055/s-0033-1341426] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
A sensitive LC-MS/MS method was developed for the determination of bergapten in dog plasma. The chromatographic separation was carried out on a Hypersil ODS column with a mobile phase consisting of methanol-water. The plasma sample was precipitated with methanol and prepare for injecting onto the LC-MS/MS system. The detection was performed on a triple quadrupole tandem mass spectrometer by MRM via electro spray ionization source. The standard curve for bergapten was linear over the concentration range of 0.5-500 ng/mL with a lower limit of quantification of 0.5 ng/mL. The inter-day and intra-day precision (R.S.D.%) for bergapten varied between 3.4 and 11.5. The corresponding inter-day and intra-day accuracy (Bias%) ranged between -3.8 and 6.9. For the pharmacokinetic analysis of serum, the mean (SD) values obtained for the bergapten were as follows: Cmax, 228.5 (14.3) ng/ml; Tmax, 4.2 (0.4) h; t1/2, 6.9 (2.3) h; AUC0-t h, 2507.2 (168.5) ng · h/mL and AUC0-∞, 3 219.2 (211.4) ng · h/mL, respectively.
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Affiliation(s)
- Y Gao
- Department of Oncology, Shanghai East Hospital, Tongji University, Shanghai China
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91
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Zhang XF, Zhao L, Xu SJ, Liu YZ, Liu HY, Cheng GD. Soil moisture effect on bacterial and fungal community in Beilu River (Tibetan Plateau) permafrost soils with different vegetation types. J Appl Microbiol 2013; 114:1054-65. [PMID: 23241008 DOI: 10.1111/jam.12106] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2012] [Revised: 12/07/2012] [Accepted: 12/07/2012] [Indexed: 11/29/2022]
Abstract
AIM This study investigated the effects of environmental variables on the bacterial and fungal communities of the Beilu River (on the Tibetan Plateau) permafrost soils with different vegetation types. METHODS AND RESULTS Microbial communities were sampled from meadow, steppe and desert steppe permafrost soils during May, June, August and November, and they were analysed by both pyrosequencing and the use of Biolog EcoPlates. The dominant bacterial and fungal phyla in meadow and steppe soils were Proteobacteria and Ascomycota, whereas Actinobacteria and Basidiomycota predominated in desert steppe soils. The bacterial communities in meadow soils degraded amines and amino acids very rapidly, while polymers were degraded rapidly by steppe communities. The RDA patterns showed that the microbial communities differed greatly between meadow, steppe and desert steppe, and they were related to variations in the soil moisture, C/N ratio and pH. A UniFrac analysis detected clear differences between the desert steppe bacterial community and others, and seasonal shifts were observed. The fungal UniFrac patterns differed significantly between meadow and steppe soils. There were significant correlations between the bacterial diversity (H') and soil moisture (r = 0.506) and C/N (r = 0.527). The fungal diversity (Hf') was significantly correlated with the soil pH (r = 0.541). CONCLUSION The soil moisture, C/N ratio and pH were important determinants of the microbial community structure in Beilu River permafrost soils. SIGNIFICANCE AND IMPACT OF THE STUDY These results may provide a useful baseline for predicting the variation in microbial communities in response to climate changes.
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Affiliation(s)
- X F Zhang
- MOE Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, China
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92
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Liu YZ, Lü XP, Pan ZX, Zhang W, Chen ZR, Wang H, Liu H, Zhang YZ. Establishment of a novel method for primary culture of normal human cervical keratinocytes. Chin Med J (Engl) 2013; 126:3344-3347. [PMID: 24033962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023] Open
Abstract
BACKGROUND Cervical keratinocytes are recovered at a low numbers and frequently associated with contaminating human fibroblasts which rapidly overgrow the epithelial cells in culture with medium supplemented with 10% fetal bovine serum (FBS). However, it is difficult to initiate keratinocyte cultures with serum-free keratinocyte growth medium alone because cell attachment can be poor. Therefore, the culture of these cells is extremely difficult. In this study, we described a modified culture medium and coated culture plastics for growing normal human cervical epithelial cells in vitro. METHODS Normal cervical epithelial tissue pieces were obtained and digested with type I collagenase to dissociate the cells and a single cell suspension produced. The cells were cultured on plastic tissue culture substrate alone or substrate coated with collagen type I from rat tail, with modified keratinocyte serum-free medium (K-SFM) supplemented with 5% FBS. After attachment, the medium were replaced with K-SFM without FBS. The expression of basal keratins of the ectocervical epithelium, K5, K14 and K19 were assayed by immunofluorescence with monoclonal antibodies to identify the cell purity. RESULTS Our results indicate that cells attached to the culture plastic more quickly in K-SFM supplemented with 5% FBS than in K-SFM alone, as well as to tissue culture plastic coated with collagen type I than plastic alone. The modified medium composed of K-SFM and 5% FBS combined with a specific tissue culture plastic coated with collagen type I from rat tail was the best method for culture of normal cervical epithelial cells. K5, K14 and K19 were assayed and keratinocyte purity was nearly 100%. CONCLUSION A novel, simple and effective method can be used to rapidly obtain highly purified keratinocytes from normal human cervical epithelium.
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Affiliation(s)
- Yu-Zhen Liu
- Department of Obstetrics and Gynecology, Qilu Hospital, Shandong Univeristy, Jinan, Shandong 250012, China
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93
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Zhao ZX, Lu JH, Mei ZQ, Pan SY, Chen D, Liu YZ, Xia WY, Dai EH. [The level of peripheral circular DNA in patients with hand foot and mouth disease]. Zhonghua Shi Yan He Lin Chuang Bing Du Xue Za Zhi 2011; 25:483-485. [PMID: 22734243] [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: 06/01/2023]
Abstract
OBJECTIVE To determine the circular DNA level of patients with hand foot and mouth disease (HFMD) and evaluate its potential clinical value. METHODS Venous blood in 30 healthy children and 78 patients with HFMD within 3 days of onset of illness and convalescent period was collected. The level of plasma circular DNA was detected by duplex real-time polymerase chain reaction assay. Blood sugar, high-sensitive CRP(hs-CRP) and leucocyte were also detected. RESULTS The level of circular DNA in control group was (6.57 +/- 4.67) ng/ml. The level of circular DNA in ordinary and severe HFMD patients was (11.51 +/- 7.75) ng/ml and (20.59 +/- 10.67) ng/ml before treatment, respectively. The levels of circular DNA in ordinary and severe HFMD patients were significantly higher than that in control group (P = 0.021; 0.000); the level of circular DNA in severe HFMD patients was significantly higher than that in ordinary HFMD patients (P = 0.011). The level of circular DNA in severe HFMD patients after treatment were significantly lower than that before treatment (P = 0.033). The level of circular DNA before treatment and after treatment in ordinary HFMD patients had no significant difference. The levels of blood sugar and hs-CRP in severe HFMD patients were higher than those in ordinary before treatment (P = 0.045; 0.011). The levels of blood sugar and hs-CRP before treatment and after treatment in ordinary HFMD patients had no significant change. There was significantly positive correlation between the level of circular DNA and that of hs-CRP in HFMD patient (P = 0.021), but there was no correlation between the level of circular DNA and that of blood sugar and leucocyte. CONCLUSIONS The level of circular DNA not only become an early identification marker of severe HFMD patients, but also become monitoring marker of effect of treatment.
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Affiliation(s)
- Zhao-Xia Zhao
- Department of Laboratory Medicine, Fifth Hospital of Shijiazhuang, Shijiazhuang 050021, China
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He Y, Wu T, Wu G, Zheng QJ, Liu YZ, Chen H, Ying JJ, Liu RH, Wang XF, Xie YL, Yan YJ, Dong JK, Li SY, Chen XH. Evidence for competing magnetic and superconducting phases in superconducting Eu 1-x Sr x Fe 2-y Co y As 2 single crystals. J Phys Condens Matter 2010; 22:235701. [PMID: 21393768 DOI: 10.1088/0953-8984/22/23/235701] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
In single crystals of Eu(1-x)Sr(x)Fe(2-y)Co(y)As(2), Co doping suppresses spin-density wave (SDW) ordering and induces a superconducting transition. A resistivity reentrance due to the antiferromagnetic ordering of Eu(2+) spins is observed, indicating the competition between antiferromagnetism (AFM) and superconductivity (SC). It is striking that the resistivity reentrance can be completely suppressed by a small magnetic field due to a field-induced metamagnetic transition from AFM to ferromagnetism (FM). The resistivity reentrance can also be suppressed by the substitution of Eu(2+) ions with nonmagnetic Ba(2+)/Sr(2+) to completely destroy the AFM ordering. These results indicate that the AFM order appears destructive to SC, while FM can coexist with the superconductivity. Further we find that magnon excitation exists in AFM ordering and can be suppressed by an applied field. Coexistence of SC from the FeAs layer and the inner field produced by the ferromagnetic Eu(2+) layer suggest a possible p-wave component in the superconducting order parameter.
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Affiliation(s)
- Y He
- Hefei National Laboratory for Physical Science at Microscale and Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
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Liu YZ, Jackson AP, Cosgrove SD. Contribution of calcium-containing crystals to cartilage degradation and synovial inflammation in osteoarthritis. Osteoarthritis Cartilage 2009; 17:1333-40. [PMID: 19447216 DOI: 10.1016/j.joca.2009.04.022] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2009] [Revised: 04/09/2009] [Accepted: 04/28/2009] [Indexed: 02/02/2023]
Abstract
OBJECTIVES The role of calcium phosphate and pyrophosphate crystals in osteoarthritis (OA) is unclear: are they a symptom of the damage that occurs to the joint or a key intermediate in the progression of inflammation and joint damage that occurs in OA? The proinflammatory and catabolic response of synthetic calcium phosphate and pyrophosphate crystals and crystals extracted from human osteoarthritic knee cartilage has been investigated. The crystal forms eliciting a response have been characterised allowing a comparison of the biological effects of synthetic and native calcium crystals on human osteoarthritic chondrocytes and synoviocytes to be carried out. METHODS Calcium phosphate and pyrophosphate crystals were synthesised in vitro and their crystal forms characterised by X-ray powder diffraction (XRPD). The inorganic crystalline material present in human osteoarthritic cartilage was extracted and its structural composition elucidated by XRPD. These crystals were applied to human primary osteoarthritic chondrocytes and synoviocytes and the production of proinflammatory and catabolic mediators measured. RESULTS The crystals extracted from human osteoarthritic knee cartilage were identified as consisting of a mixture of monoclinic and triclinic calcium pyrophosphate dihydrate (m-CPPD and t-CPPD). These crystals elicited an inflammatory and catabolic response in human primary osteoarthritic chondrocytes and synoviocytes as measured by an increase in nitric oxide (NO), matrix metalloproteinase 13 (MMP-13) and prostaglandin E2 (PGE(2)) production. NO, MMP-13 and PGE(2) production was also increased when the synthetic calcium hydrogen phosphate dihydrate (DCPD) and calcium pyrophosphate hydrates were applied to the cells. CONCLUSIONS Crystals extracted from human osteoarthritic knee cartilage induce the production of proinflammatory and catabolic mediators (NO, MMP-13 and PGE(2)) in human primary chondrocytes and synoviocytes. Synthetic calcium phosphate and pyrophosphate crystals elicit a similar response in those cells. Our findings suggest that these crystals could contribute to cartilage degradation and synovitis in OA.
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Affiliation(s)
- Y Z Liu
- Department of Bioscience, AstraZeneca R&D Charnwood, Bakewell Road, Loughborough, UK.
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Liu YZ, Ding QC, Zhang J, Jin JY, Lei XX, Zhang LX. Crystal structure of (1R,2S,3R,4S)-1-(6-(4-fluorophenyl)-7H-[1,2,4]triazolo[ 3,4-b][1,3,4]thiadiazin-3-yl)pentane-1,2,3,4,5-pentaol water (2:7), 2C15H17FN4O5S · 7H2O. Z KRIST-NEW CRYST ST 2009. [DOI: 10.1524/ncrs.2009.0119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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97
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Liu YZ, Ding QC, Zhang J, Jin JY, Lei XX, Zhang LX. Crystal structure of (1R,2S,3R,4S)-1-(6-(4-fluorophenyl)-7H-[1,2,4]triazolo[ 3,4-b][1,3,4]thiadiazin-3-yl)pentane-1,2,3,4,5-pentaol water (2:7), 2C15H17FN4O5S · 7H2O. Z KRIST-NEW CRYST ST 2009. [DOI: 10.1524/ncrs.2009.224.14.279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Wen JH, Chen YY, Song SJ, Ding J, Gao Y, Hu QK, Feng RP, Liu YZ, Ren GC, Zhang CY, Hong TP, Gao X, Li LS. Paired box 6 (PAX6) regulates glucose metabolism via proinsulin processing mediated by prohormone convertase 1/3 (PC1/3). Diabetologia 2009; 52:504-13. [PMID: 19034419 DOI: 10.1007/s00125-008-1210-x] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.5] [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: 07/25/2008] [Accepted: 08/20/2008] [Indexed: 11/30/2022]
Abstract
AIMS/HYPOTHESIS Human patients with aniridia caused by heterozygous PAX6 mutations display abnormal glucose metabolism, but the underlying molecular mechanism is largely unknown. Disturbed islet architecture has been proposed as the reason why mice with complete inactivation of paired box 6 (PAX6) in the pancreas develop diabetes. This is not, however, the case in human aniridia patients with heterozygous PAX6 deficiency and no apparent defects in pancreatic development. We investigated the molecular mechanism underlying the development of abnormal glucose metabolism in these patients. METHODS A human aniridia pedigree with a PAX6 R240Stop mutation was examined for abnormal glucose metabolism using an OGTT. The underlying mechanism was further investigated using Pax6 R266Stop mutant small-eye mice, which also have abnormal glucose metabolism similar to that in PAX6 R240Stop mutation human aniridia patients. RESULTS Paired box 6 (PAX6) deficiency, both in aniridia patients with a heterozygous PAX6 R240Stop mutation and in mice with a heterozygous Pax6 R266Stop mutation, causes defective proinsulin processing and abnormal glucose metabolism. PAX6 can bind to the promoter and directly upregulate production of prohormone convertase (PC)1/3, an enzyme essential for conversion of proinsulin to insulin. Pax6 mutations lead to PC1/3 deficiency, resulting in defective proinsulin processing and abnormal glucose metabolism. CONCLUSIONS/INTERPRETATION This study indicates a novel function for PAX6 in the regulation of proinsulin processing and glucose metabolism via modulation of PC1/3 production. It also provides an insight into the abnormal glucose metabolism caused by heterozygous PAX6 mutations in humans and mice.
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Affiliation(s)
- J H Wen
- Peking University Stem Cell Research Center, China-Australian Center of Excellence for Stem Cell Sciences, Beijing, People's Republic of China
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99
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Croitoru MD, Van Dyck D, Liu YZ, Zhang Z. Measurement of specimen thickness by phase change determination in TEM. Ultramicroscopy 2008; 108:1616-22. [PMID: 18657906 DOI: 10.1016/j.ultramic.2008.06.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2007] [Revised: 05/23/2008] [Accepted: 06/11/2008] [Indexed: 10/21/2022]
Abstract
A non-destructive method for measuring the thickness of thin amorphous films composed of light elements has been developed. The method employs the statistics of the phase of the electron exit wave function. The accuracy of this method has been checked numerically by the multislice method and compared with that based on the mean inner potential.
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Affiliation(s)
- M D Croitoru
- University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium.
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