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Wang H, Yang HJ, Zeng S, Xu MW, Ma JX, Xu MH, Xu LS, Yang DH. [Willis covered stent for paraclinoid aneurysms:efficacy and mid-long-term follow-up results]. Zhonghua Yi Xue Za Zhi 2022; 102:1119-1122. [PMID: 35436812 DOI: 10.3760/cma.j.cn112137-20210803-01726] [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: 06/14/2023]
Abstract
The clinical data and follow-up results of 27 paraspinoid aneurysms treated by Willis covered stent (WCS) in Department of Neurosurgery, Army Medical University from May 2014 to January 2021 were retrospectively analyzed. Among them, 17 cases (63.0%) were treated with WCS alone, and 10 cases (37.0%) were assisted with coiling embolization. During the follow-up, postoperative internal leakage occurred in 2 patients(7%), of which 1(type Ⅰ) wasself-healing and the other 1 (type Ⅲ) was cured by WCS implantation again. The remaining patients had no aneurysm recurrence, unobstructed parent artery, stent displacement and internal stenosis. 92.6% (25/27) of the improved mRS scores were good. WCS is a safe and effective method for the treatment of parabedinal aneurysms.
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Affiliation(s)
- H Wang
- Department of Neurosurgery, Daping Hospital, Army Medical University, Chongqing 400042, China
| | - H J Yang
- Department of Neurosurgery, Daping Hospital, Army Medical University, Chongqing 400042, China
| | - Shi Zeng
- Department of Neurosurgery, Daping Hospital, Army Medical University, Chongqing 400042, China
| | - M W Xu
- Department of Neurosurgery, Daping Hospital, Army Medical University, Chongqing 400042, China
| | - J X Ma
- Department of Neurosurgery, Daping Hospital, Army Medical University, Chongqing 400042, China
| | - M H Xu
- Department of Neurosurgery, Daping Hospital, Army Medical University, Chongqing 400042, China
| | - L S Xu
- Department of Neurosurgery, Daping Hospital, Army Medical University, Chongqing 400042, China
| | - D H Yang
- Department of Neurosurgery, Daping Hospital, Army Medical University, Chongqing 400042, China
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Hou J, Song HF, Chen BG, Xu MH, Gao QW, Wang J, Chen S, Wang F, Wu J, Chai JK. [Clinical effects of pre-expanded anterior perforator flap of transverse cervical artery and pre-expanded thoracic random flap in reconstructing extensive facial and cervical scar in relay]. Zhonghua Shao Shang Za Zhi 2021; 37:350-355. [PMID: 33745256 DOI: 10.3760/cma.j.cn501120-20201023-00445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the clinical effects of pre-expanded anterior perforator flap of transverse cervical artery in extensive facial and cervical scar reconstruction and contralateral pre-expanded thoracic random flap in relay in donor site repair. Methods: A retrospective cohort study was conducted. From May 2008 to December 2018, 10 patients with extensive facial and cervical scar after burns were treated in the Fourth Medical Center of PLA General Hospital, including 8 males and 2 females, aged 10-55 years. In the first stage of operation, two skin and soft tissue expanders of the same volume (with rated capacity of 250-600 mL) were respectively placed in the right side and left side of the chest according to the size of scar, and then the skin was expanded. The total amount of normal saline injected was 2 to 4 times of the rated capacity of the expander. In the second stage, the defect with area of 12 cm×8 cm-23 cm×15 cm caused by scar resection and release was repaired with unilateral pre-expanded anterior perforator flap of transverse cervical artery with area of 12 cm×9 cm-24 cm×16 cm. The contralateral pre-expanded thoracic random flap with the same area as that of the above-mentioned perforator flap was extended to repair the secondary defect with area of 8 cm×6 cm-17 cm×14 cm formed after transfer of the above-mentioned perforator flap. The exploration of perforating branch of transverse cervical artery, flap transfer and survival, injury repair, and complications were observed. The appearance and related function of donor and recipient sites and satisfaction of patients were followed up. Results: The perforating branches of transverse cervical artery appeared stably in the 10 patients. All the flaps were transferred to the recipient area without tension and survived. Both facial and cervical injuries were repaired successfully with no common complications. During the follow-up of 6 months-8 years, the color and texture of the pre-expanded anterior perforator flap of transverse cervical artery matched with the surrounding tissue, the functions of head raising and neck rotation of patients were significantly improved compared with those before operation, the color and texture of the flap transplanted in the first donor site matched with the original skin, linear scar left at the surgical incision, and 9 patients were satisfied with the restoration of the appearance and function of donor and recipient sites. Conclusions: The color and texture of the pre-expanded anterior perforator flap of transverse cervical artery match well with the face and neck, and the repairable area is large. After the perforator flap is removed, the secondary wound can be repaired with the pre-expanded thoracic random flap at the same time, and the injury of the chest donor site is alleviated. This relay repair method is a good choice for reconstructing extensive facial and cervical scar.
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Affiliation(s)
- J Hou
- Medical School of Chinese PLA, Beijing 100853, China
| | - H F Song
- Department of Burns & Plastic Surgery, Institute of Burns, the Fourth Medical Center, PLA General Hospital, Beijing 100048, China
| | - B G Chen
- Department of Burns & Plastic Surgery, Institute of Burns, the Fourth Medical Center, PLA General Hospital, Beijing 100048, China
| | - M H Xu
- Department of Burns & Plastic Surgery, Institute of Burns, the Fourth Medical Center, PLA General Hospital, Beijing 100048, China
| | - Q W Gao
- Department of Burns & Plastic Surgery, Institute of Burns, the Fourth Medical Center, PLA General Hospital, Beijing 100048, China
| | - J Wang
- Department of Burns & Plastic Surgery, Institute of Burns, the Fourth Medical Center, PLA General Hospital, Beijing 100048, China
| | - S Chen
- Epidemic Prevention and Health Care Room of Service Guarantee Center of National Defense University, Beijing 100091, China
| | - F Wang
- Department of Burns & Plastic Surgery, Institute of Burns, the Fourth Medical Center, PLA General Hospital, Beijing 100048, China
| | - J Wu
- Department of Burns & Plastic Surgery, Institute of Burns, the Fourth Medical Center, PLA General Hospital, Beijing 100048, China
| | - J K Chai
- Department of Burns & Plastic Surgery, Institute of Burns, the Fourth Medical Center, PLA General Hospital, Beijing 100048, China
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Liu FQ, Liu CP, Xu MH, Zhu J, Yu W, Wang LL. Effects of sevoflurane postconditioning on the expression of AKT/mTOR and apoptosis of myocardial cells in myocardial ischemia-reperfusion rats. J BIOL REG HOMEOS AG 2020; 34:1909-1913. [PMID: 33147940 DOI: 10.23812/20-429-l] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- F Q Liu
- Operation Room, The People's Hospital of Zhangqiu area, Jinan, Shandong Province, China
| | - C P Liu
- Department of Cardiology, Jiyang People's Hospital, Jinan, Shandong Province, China
| | - M H Xu
- Department of Clinical Laboratory, Yantai Central Blood Station, Yantai, Shandong Province, China
| | - J Zhu
- Respiratory Department, The People's Hospital of Zhangqiu Area, Jinan, Shandong Province, China
| | - W Yu
- Department of Cardiology, The People's Hospital of Zhangqiu Area, Jinan, Shandong Province, China
| | - L L Wang
- Department of Anesthesiology, Jining No.1 People's Hospital, Affiliated Jining No.1 People's Hospital of Jining Medical University, Jining Medical University, Jining, Shandong Province, China
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Zhang YQ, Aihemaitijiang S, Yang J, Liao ZY, Zhu WL, Zhang ZF, Xu MH. [Establishment of nutrition literacy core items for Chinese people]. Zhonghua Yu Fang Yi Xue Za Zhi 2020; 54:1069-1074. [PMID: 33115191 DOI: 10.3760/cma.j.cn112150-20200327-00458] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To establish core items of nutrition literacy for general population in China. Methods: The framework system and preliminary items of nutrition literacy were established through literature review and experts' consultation. Content validity test was used to determine the nutrition literacy item. Thirteen experts in the field of human nutrition, health education and nutrition and diseases were invited to score the importance of each nutrition literacy item via Email. The judgment basis and familiarity of experts towards the items, active coefficient, and content validity were analyzed to generate the final list of nutrition literacy items. Results: 92.3% of questionnaires in two rounds were collected.The active coefficient of experts was satisfied and the authority coefficient was 0.96.In the content validity evaluation, the correlation I-CVI value of each item was above 0.83 and the κ value was above 0.74. The evaluation result was excellent.After the second round of expert consultation, all selected items met the inclusion criteria. We identified the final list of nutrition literacy items consisting of three scales (knowledge and concepts, lifestyles and dietary behaviors, and basic skills), ten subscales (basic nutrition philosophy, food classification and nutrition knowledge, healthy weight, eating behavior and culture, balanced diet, exercise health, food assessment, nutrition information acquisition and decision, nutrition safety, and weight management)with 25 items in total. Conclusions: The framework system and core items of nutrition literacy are established for Chinese people based on the content validity evaluation. The experts involved in the consultation process present a performance with good representativeness, enthusiasm and authority, and the content validity evaluation result is satisfied.
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Affiliation(s)
- Y Q Zhang
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China
| | - Sumiya Aihemaitijiang
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China
| | - J Yang
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China
| | - Z Y Liao
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China
| | - W L Zhu
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China
| | - Z F Zhang
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China
| | - M H Xu
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China
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Zeng S, Zhou C, Yang DH, Xu LS, Yang HJ, Xu MH, Wang H. LEF1-AS1 is implicated in the malignant development of glioblastoma via sponging miR-543 to upregulate EN2. Brain Res 2020; 1736:146781. [DOI: 10.1016/j.brainres.2020.146781] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 03/05/2020] [Accepted: 03/12/2020] [Indexed: 12/21/2022]
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Yang W, Wu PF, Ma JX, Liao MJ, Xu LS, Xu MH, Yi L. Presenilin1 exerts antiproliferative effects by repressing the Wnt/β-catenin pathway in glioblastoma. Cell Commun Signal 2020; 18:22. [PMID: 32046730 PMCID: PMC7014622 DOI: 10.1186/s12964-019-0501-9] [Citation(s) in RCA: 5] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Accepted: 12/23/2019] [Indexed: 01/02/2023] Open
Abstract
Background Glioblastoma and Alzheimer’s disease (AD) are the most common and devastating diseases in the central nervous system. The dysfunction of Presenilin1 is the main reason for AD pathogenesis. However, the molecular function of Presenilin1 and its relative mechanism in glioblastoma remain unclear. Methods Expression of presenilin1 in glioma was determined by IHC. CCK-8, colony formation, Flow cytometry, Edu staining were utilized to evaluate functions of presenilin1 on glioblastoma proliferation. The mechanism of above process was assessed by Western blotting and cell immunofluorescence. Mouse transplanting glioblastoma model and micro-MRI detection were used to verified presenilin1 function in vivo. Results In this study, we found that all grades of glioma maintained relatively low Presenilin1 expression and that the expression of Presenilin1 in high-grade glioma was significantly lower than that in low-grade glioma. Moreover, the Presenilin1 level had a positive correlation with glioma and glioblastoma patient prognosis. Next, we determined that Presenilin1 inhibited the growth and proliferation of glioblastoma cells by downregulating CDK6, C-myc and Cyclin D1 to arrest the cell cycle at the G1/S phase. Mechanistically, Presenilin1 promoted the direct phosphorylation of β-catenin at the 45 site and indirect phosphorylation at the 33/37/41 site, then decreased the stabilized part of β-catenin and hindered its translocation from the cytoplasm to the nucleus. Furthermore, we found that Presenilin1 downregulation clearly accelerated the growth of subcutaneous glioblastoma, and Presenilin1 overexpression significantly repressed the subcutaneous and intracranial transplantation of glioblastoma by hindering β-catenin-dependent cell proliferation. Conclusion Our data implicate the antiproliferative effect of Presenilin1 in glioblastoma by suppressing Wnt/β-catenin signaling, which may provide a novel therapeutic agent for glioblastoma. Video Abstract.
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Affiliation(s)
- Wei Yang
- Department of Neurosurgery, Daping Hospital & Institute Research of Surgery of Army Medical University, 10# Changjiangzhi Road, Daping, Yuzhong District, Chongqing, 400042, China
| | - Peng-Fei Wu
- Department of Neurosurgery, Daping Hospital & Institute Research of Surgery of Army Medical University, 10# Changjiangzhi Road, Daping, Yuzhong District, Chongqing, 400042, China
| | - Jian-Xing Ma
- Department of Neurosurgery, Daping Hospital & Institute Research of Surgery of Army Medical University, 10# Changjiangzhi Road, Daping, Yuzhong District, Chongqing, 400042, China
| | - Mao-Jun Liao
- Department of Neurosurgery, Daping Hospital & Institute Research of Surgery of Army Medical University, 10# Changjiangzhi Road, Daping, Yuzhong District, Chongqing, 400042, China
| | - Lun-Shan Xu
- Department of Neurosurgery, Daping Hospital & Institute Research of Surgery of Army Medical University, 10# Changjiangzhi Road, Daping, Yuzhong District, Chongqing, 400042, China
| | - Min-Hui Xu
- Department of Neurosurgery, Daping Hospital & Institute Research of Surgery of Army Medical University, 10# Changjiangzhi Road, Daping, Yuzhong District, Chongqing, 400042, China.
| | - Liang Yi
- Department of Neurosurgery, Daping Hospital & Institute Research of Surgery of Army Medical University, 10# Changjiangzhi Road, Daping, Yuzhong District, Chongqing, 400042, China.
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Chen P, Deng YB, Hu X, Zhou W, Zhang QT, Zhang LY, Xu MH. Risk factors associated with the progression of extra-axial hematoma in the original frontotemporoparietal site after contralateral decompressive surgery in traumatic brain injury patients. Chin J Traumatol 2020; 23:45-50. [PMID: 31982270 PMCID: PMC7049639 DOI: 10.1016/j.cjtee.2019.10.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 12/02/2019] [Accepted: 12/20/2019] [Indexed: 02/04/2023] Open
Abstract
PURPOSE To introduced our experience with progressive extra-axial hematoma (EAH) in the original frontotemporoparietal (FTP) site after contralateral decompressive surgery (CDS) in traumatic brain injury patients and discuss the risk factors associated with this dangerous situation. METHODS This retrospective study was conducted on 941 patients with moderate or severe TBI treated in Daping Hospital, Army Medical University, Chongqing, China in a period over 5 years (2013-2017). Only patients with bilateral lesion, the contralateral side being the dominant lesion, and decompressive surgery on the contralateral side conducted firstly were included. Patients were exclude if (1) they underwent bilateral decompression or neurosurgery at the original location firstly; (2) although surgery was performed first on the contralateral side, surgery was done again at the contralateral side due to re-bleeding or complications; (3) patients younger than 18 years or older than 80 years; and (4) patients with other significant organ injury or severe disorder or those with abnormal coagulation profiles. Clinical and radiographic variables reviewed were demographic data, trauma mechanisms, neurological condition assessed by Glasgow coma scale (GCS) score at admission, pupil size and reactivity, use of mannitol, time interval from trauma to surgery, Rotterdam CT classification, type and volume of EAH, presence of a skull fracture overlying the EAH, status of basal cistern, size of midline shift, associated brain lesions and types, etc. Patients were followed-up for at least 6 months and the outcome was graded by Glasgow outcome scale (GOS) score as favorable (scores of 4-5) and unfavorable (scores of 1-3). Student's t-test was adopted for quantitative variables while Pearson Chi-squared test or Fisher's exact test for categorical variables. Multivariate logistic regression analysis was also applied to estimate the significance of risk factors. RESULTS Initially 186 patients (19.8%) with original impact locations at the FTP site and underwent surgery were selected. Among them, 66 met the inclusion and exclusion criteria. But only 50 patients were included because the data of the other 16 patients were incomplete. Progressive EAH developed at the original FTP site in 11 patients after the treatment of, with an incidence of 22%. Therefore the other 39 patients were classified as the control group. Multivariate logistic regression analysis showed that both the volume of the original hematoma and the absence of an apparent midline shift were significant predictors of hematoma progression after decompressive surgery. Patients with fracture at the original impact site had a higher incidence of progressive EAH after CDS, however this factor was not an important predictor in the multivariate model. We also found that patients with progressive EAH had a similar favorable outcome with control group. CONCLUSION Progressive EAH is correlated with several variables, such as hematoma volumes ≥10 mL at the original impact location and the absence of an apparent midline shift (<5 mm). Although progressive EAH is devastating, timely diagnosis with computed tomography scans and immediate evacuation of the progressive hematoma can yield a favorable result.
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Affiliation(s)
- Peng Chen
- State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center of PLA, Daping Hospital, Army Medical University, Chongqing 400042 China,Department of Neurosurgery, Chongqing Emergency Medical Center, Chongqing, China
| | - Yong-Bing Deng
- Department of Neurosurgery, Chongqing Emergency Medical Center, Chongqing, China
| | - Xi Hu
- Department of Neurosurgery, Chongqing Emergency Medical Center, Chongqing, China
| | - Wei Zhou
- Department of Neurosurgery, Chongqing Emergency Medical Center, Chongqing, China
| | - Qing-Tao Zhang
- Department of Neurosurgery, Chongqing Emergency Medical Center, Chongqing, China
| | - Lian-Yang Zhang
- State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center of PLA, Daping Hospital, Army Medical University, Chongqing 400042 China,Corresponding authors.
| | - Min-Hui Xu
- Department of Neurosurgery, Daping Hospital, Army Medical University, Chongqing 400042, China,Corresponding authors.
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Zeng S, Zhao X, Xu LS, Yang D, Chen L, Xu MH. Apoptosis induction effect of Apocynum venetum polyphenol on human U87 glioma cells via NF-κB pathway. Future Oncol 2019; 15:3723-3738. [PMID: 31650850 DOI: 10.2217/fon-2019-0381] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Aim: Apocynum venetum polyphenol (AVP) was used in in vitro glioma cells culture to prove the growth inhibitory effect of AVP on human U87 glioma cells via NF-κB pathway. Materials & methods: The MTT assay, DAPI morphology, quantitative PCR and western blot experiments were used for determination in vitro. Results & conclusion: AVP can also induce U87 cancer cells apoptosis illustrated by DAPI morphology. AVP could enhance the mRNA and protein expression of IκB-α, TNF-α, TRAIL, caspase-3 and caspase-9 in U87 cancer cells and reduce those of NF-κBp65, cIAP-1, cIAP-2, TGF-β2, CyclinD1, VEGF and IL-8. After ammonium pyrrolidine dithiocarbamate (PDTC) treatment, the NF-κBp65 expression was reduced in U87 cells, and AVP could raise these effects. The results of HPLC indicate that AVP mainly contains six constituents. The growth inhibitory effects of AVP on U87 glioma cells are predominantly from these natural active constituents.
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Affiliation(s)
- Shi Zeng
- Department of Neurosurgery, Daping Hospital, Army Medical University, Chongqing 400042, PR China
| | - Xin Zhao
- Chongqing Collaborative Innovation Center for Functional Food, Chongqing University of Education, Chongqing 400067, PR China
| | - Lun-Shan Xu
- Department of Neurosurgery, Daping Hospital, Army Medical University, Chongqing 400042, PR China
| | - Donghong Yang
- Department of Neurosurgery, Daping Hospital, Army Medical University, Chongqing 400042, PR China
| | - Lizhao Chen
- Department of Neurosurgery, Daping Hospital, Army Medical University, Chongqing 400042, PR China
| | - Min-Hui Xu
- Department of Neurosurgery, Daping Hospital, Army Medical University, Chongqing 400042, PR China
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Zeng S, Yang D, Yang H, Xu LS, Xu MH. A persistent primitive hypoglossal artery-posterior inferior cerebellar artery convergence aneurysm treated by stent-assisted coil embolization: A case report. Medicine (Baltimore) 2019; 98:e17151. [PMID: 31574820 PMCID: PMC6775390 DOI: 10.1097/md.0000000000017151] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
RATIONALE Persistent primitive hypoglossal artery (PPHA) is often associated with intracranial anomalies such as aneurysms. Surgical treatment of aneurysms on the PPHA is challenging due to that the posterior circulation depends solely on PPHA. PATIENT CONCERNS A case of an 83-year-old woman with a large aneurysm on PPHA presented with vertigo was reported. DIAGNOSIS Three-dimensional angiogram revealed a wide-neck aneurysm on the PPHA. INTERVENTIONS The aneurysm was successfully treated using a novel low-profile visualized intraluminal support stent-assisted coiling technique. OUTCOMES No complications occurred during the procedure. The final angiogram confirmed the patency of the posterior inferior cerebellar artery and the parent artery and its distal branches. LESSONS Our case suggests that stent-assisted coil embolization is safe and effective for the treatment of aneurysms on the PPHA.
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Zeng S, Yang H, Yang D, Xu L, Xu M, Wang H. Case Report of Late Type IIIb Endoleak with Willis Covered Stent (WCS) and Literature Review. World Neurosurg 2019; 130:160-164. [PMID: 31233925 DOI: 10.1016/j.wneu.2019.06.105] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 06/12/2019] [Accepted: 06/13/2019] [Indexed: 10/26/2022]
Abstract
OBJECTIVE We report a case of late type IIIb endoleak with Willis covered stent (WCS) developed 14 months after endovascular paraclinoid aneurysm repair. METHODS A 52-year-old woman presented with episodic headache, caused by a giant paraclinoid aneurysm. She underwent a successful 3.5 x 16mm WCS positioning to treat the aneurysm. Fourteen months later, the patient was admitted with the same symptoms. Digital subtraction angiography examination showed recurrence of the aneurysm, which was similar to the preoperative one. DynaCT (Siemens, Erlangen, Germany) indicated the intact of the metal structure of the stent without migration. Type IIIb endoleak (defect in the graft fabric) was confirmed with a whole aneurysm neck located in the middle part of the stent. The type IIIb endoleak was treated with another WCS (4.0 x 16mm). The immediate digital subtraction angiography imaging indicated that the endoleak disappeared and the aneurysm was completely occluded. Re-examination done 1 year after the second treatment showed a complete exclusion of the aneurysm sac. CONCLUSIONS Type IIIb endoleaks can be safely treated by the endovascular positioning of another WCS. Continuous surveillance after endovascular paraclinoid aneurysm repair for intracranial aneurysms is warranted to make ensure the safety of WCS.
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Affiliation(s)
- Shi Zeng
- Department of Neurosurgery, Institute of Surgery Research, Daping Hospital, Army Medical University, Chongqing, PR China
| | - Huajiang Yang
- Department of Neurosurgery, Institute of Surgery Research, Daping Hospital, Army Medical University, Chongqing, PR China
| | - Donghong Yang
- Department of Neurosurgery, Institute of Surgery Research, Daping Hospital, Army Medical University, Chongqing, PR China.
| | - LunShan Xu
- Department of Neurosurgery, Institute of Surgery Research, Daping Hospital, Army Medical University, Chongqing, PR China
| | - MinHui Xu
- Department of Neurosurgery, Institute of Surgery Research, Daping Hospital, Army Medical University, Chongqing, PR China
| | - Hao Wang
- Department of Neurosurgery, Institute of Surgery Research, Daping Hospital, Army Medical University, Chongqing, PR China
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Liu XH, Wu H, Huang YF, Zhang GY, Xu MH. [Clinical characteristics of malignant peritoneal mesothelioma misdiagnosed as tuberculous peritonitis: a report of 6 cases]. Zhonghua Yi Xue Za Zhi 2019; 99:1893-1897. [PMID: 31269586 DOI: 10.3760/cma.j.issn.0376-2491.2019.24.011] [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 reduce the misdiagnosis rate of ascites and improve the diagnosis rate of malignant peritoneal mesothelioma. Methods: From May 2008 to May 2018, in Xiangya Hospital of Central South University,the clinical data of malignant peritoneal mesothelioma misdiagnosed as tuberculous peritonitis were retrospectively analyzed. Results: (1) Among the 6 patients, they were male; the age of onset was 42-70 (52±9.57) years old, and there was no history of asbestos exposure. (2) All cases with abdominal pain or abdominal distension were there and the course of disease was more than 1 month to more than 2 years. (3) In all patients,the nature of ascites was exudate; ADA was higher than normal value and below 45 U/L; LDH value in ascites was higher than 200 U/L (83.3%); mesothelioma was considered in ascites cytology in 1 case. (4) Laparoscopic biopsy was performed in 2 cases and B-ultrasound guided biopsy in 4 cases; Among them, malignant peritoneal mesothelioma diagnosed by pathology. (5) In Immunohistochemical positive markers, MC was the most sensitive (100%), followed by CR (67%), CK-Pan (67%), Ki-67 (67%) and EMA (67%). (6) Two patients received treatment with operation, abdominal hyperthermic perfusion and postoperative systemic chemotherapy. Conclusions: (1) Malignant peritoneal mesothelioma should be considered in middle-aged and aged male patients with unexplained ascites and early laparoscopy or laparotomy for diagnosis. (2) ADA and LDH level in ascites are significant in differentiating tuberculous peritonitis from malignant peritoneal mesothelioma. (3) Immunohistochemical positive marker MC may be a potential specific marker for malignant mesothelioma. (4) The survival time of patients is improved by comprehensive treatment such as operation and chemotherapy.
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Affiliation(s)
- X H Liu
- Department of Gastroenterology, Xiangya Hospital, Central South University, Changsha 410005, China
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Yang W, Wu PF, Ma JX, Liao MJ, Wang XH, Xu LS, Xu MH, Yi L. Sortilin promotes glioblastoma invasion and mesenchymal transition through GSK-3β/β-catenin/twist pathway. Cell Death Dis 2019; 10:208. [PMID: 30814514 PMCID: PMC6393543 DOI: 10.1038/s41419-019-1449-9] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [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: 11/22/2018] [Revised: 02/02/2019] [Accepted: 02/12/2019] [Indexed: 12/21/2022]
Abstract
High aggressiveness is a hallmark of glioblastoma and predicts poor prognosis of patients with glioblastoma. The expression level of sortilin has been preliminarily reported to be elevated in high-grade glioma; however, the potential significance of sortilin in glioblastoma progression has not been elucidated. In this study, we investigated the oncogenic effect of sortilin in glioblastoma. Increased levels of sortilin were noted in the mesenchymal subtype of glioblastoma and highly aggressive subtypes of glioblastoma tissues and cell lines. In addition, high levels of sortilin predicted poor prognoses in patients with glioblastoma. Sortilin knockdown or inhibition with AF38469 (an orally bioavailable inhibitor of sortilin) significantly suppressed migration and invasion by inhibiting EMT-like mesenchymal transition in glioblastoma cells. Furthermore, we proved that sortilin promoted cell invasion mainly via Glycogen synthase kinase 3 beta (GSK-3β)/β-catenin/Twist-induced EMT-like mesenchymal transition in glioblastoma. Taken together, our results demonstrate a critical role of sortilin in glioblastoma invasion and EMT-like mesenchymal transition, indicating that sortilin contributes to glioblastoma progression. These data also highlight the dramatic antitumor effects of AF38469 in glioblastoma, suggesting that AF38469 is a potentially powerful antitumor agent for sortilin-overexpressing human glioblastoma.
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Affiliation(s)
- Wei Yang
- Department of Neurosurgery, Daping Hospital and Institute Research of Surgery, Army Medical University, Chongqing, 400042, China
| | - Peng-Fei Wu
- Department of Neurosurgery, Daping Hospital and Institute Research of Surgery, Army Medical University, Chongqing, 400042, China
| | - Jian-Xing Ma
- Department of Neurosurgery, Daping Hospital and Institute Research of Surgery, Army Medical University, Chongqing, 400042, China
| | - Mao-Jun Liao
- Department of Neurosurgery, Daping Hospital and Institute Research of Surgery, Army Medical University, Chongqing, 400042, China
| | - Xu-Hui Wang
- Department of Neurosurgery, Daping Hospital and Institute Research of Surgery, Army Medical University, Chongqing, 400042, China
| | - Lun-Shan Xu
- Department of Neurosurgery, Daping Hospital and Institute Research of Surgery, Army Medical University, Chongqing, 400042, China
| | - Min-Hui Xu
- Department of Neurosurgery, Daping Hospital and Institute Research of Surgery, Army Medical University, Chongqing, 400042, China.
| | - Liang Yi
- Department of Neurosurgery, Daping Hospital and Institute Research of Surgery, Army Medical University, Chongqing, 400042, China.
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Abstract
Studying natural variation in rice resistance genes of cultivated and wild rice relatives can predict resistance stability to rice blast fungus. In the present study, the protein coding regions of the rice R gene Pi-d2 in 35 rice accessions, including Oryza sativa L. subsp. indica Kato (Aus), indica (IND), temperate japonica (TEJ), tropical japonica (TRJ), aromatic (ARO); subgroups of Oryza sativa; 6 accessions of wild rice varieties; O. nivara; and O. rufipogon were analyzed. A total of 13 nucleotide differences were found in the open reading frames (ORFs) of Pi-d2. Translation of these ORFs revealed 9 variants; 3 were novel Pi-d2 variants. Variants H2 and H5 were identified in accessions of cultivated rice and O. nivara, H1, H3, H4, H6, and H8 were only identified in cultivated rice. H2 and H5 were the common types of IND and O. nivara, H8 was the common type of TRJ and AUS, H6 was the specific type of AUS, and H3 was the specific type of ARO. H7 and H9 were specific haplotypes of O. nivara and O. rufipogon, respectively. These findings demonstrate that Pi-d2 variants are useful indicators for each subgroup, and Pi-d2 is an ancient gene that predates speciation of rice subgroups.
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Affiliation(s)
- J B Li
- Agricultural Environment and Resources Research Institute, Yunnan Academy of Agricultural Sciences, Kunming, Yunnan Province, China
| | - Y D Sun
- The Key Laboratory of Biotechnology Research of Yunnan Province, Yunnan Academy of Agricultural Sciences, Kunming, Yunnan Province, China
| | - H Liu
- Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan Province, China
| | - Y Y Wang
- The Key Laboratory of Biotechnology Research of Yunnan Province, Yunnan Academy of Agricultural Sciences, Kunming, Yunnan Province, China
| | - Y L Jia
- United States Department of Agriculture-Agricultural Research Service, Dale Bumpers National Rice Research Center, Stuttgart, Arkansas, USA
| | - M H Xu
- The Key Laboratory of Biotechnology Research of Yunnan Province, Yunnan Academy of Agricultural Sciences, Kunming, Yunnan Province, China
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14
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Zeng S, Jiang JX, Xu MH, Xu LS, Shen GJ, Zhang AQ, Wang XH. Prognostic Value of Apolipoprotein E Epsilon4 Allele in Patients with Traumatic Brain Injury: A Meta-Analysis and Meta-Regression. Genet Test Mol Biomarkers 2014; 18:202-10. [PMID: 24475734 DOI: 10.1089/gtmb.2013.0421] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Affiliation(s)
- Shi Zeng
- Department of Neurosurgery, Institute of Surgery Research, Daping Hospital, Third Military Medical University, YuZhong District, Chongqing, People's Republic of China
| | - Jian-Xin Jiang
- State Key Laboratory of Trauma, Burns and Combined Injury, Institute of Surgery Research, Daping Hospital, Third Military Medical University, YuZhong District, Chongqing, People's Republic of China
| | - Min-Hui Xu
- Department of Neurosurgery, Institute of Surgery Research, Daping Hospital, Third Military Medical University, YuZhong District, Chongqing, People's Republic of China
| | - Lun-Shan Xu
- Department of Neurosurgery, Institute of Surgery Research, Daping Hospital, Third Military Medical University, YuZhong District, Chongqing, People's Republic of China
| | - Guang-Jian Shen
- Department of Neurosurgery, Institute of Surgery Research, Daping Hospital, Third Military Medical University, YuZhong District, Chongqing, People's Republic of China
| | - An-Qiang Zhang
- State Key Laboratory of Trauma, Burns and Combined Injury, Institute of Surgery Research, Daping Hospital, Third Military Medical University, YuZhong District, Chongqing, People's Republic of China
| | - Xu-Hui Wang
- Department of Neurosurgery, Institute of Surgery Research, Daping Hospital, Third Military Medical University, YuZhong District, Chongqing, People's Republic of China
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15
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Chen L, Xiao H, Xu L, Zou Y, Zhang Y, Xu M. A case study of a patient with gliosarcoma with an extended survival and spinal cord metastases. Cell Biochem Biophys 2012; 62:391-5. [PMID: 22198898 DOI: 10.1007/s12013-011-9312-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Gliosarcoma is a rare brain tumor consisting of both glial and mesenchymal components. Metastatic gliosarcoma is rare; however, here we report a 31-year-old Chinese woman with cranial gliosarcoma metastatic to the liver, lymph nodes and the spinal cord. Initially, the patient presented with dizziness, headache and vomiting and after surgery and histological examination, was diagnosed with cranial gliosarcoma. The patient was treated with surgical resection followed by chemotherapy and radiotherapy. Three years after completing treatment, the patient again presented with similar symptoms with the addition of a seizure. Test revealed recurrence of the gliosarcoma, and the same treatment was prescribed. Three years after treatment completion, the patient again presented with dizziness and headache. Masses at the right temple and in the right side of the neck were found. Tumors were surgically removed from the brain, skull, scalp and neck, the latter three diagnosed as metastatic gliosarcomas. The patient received both chemotherapy and radiotherapy following resection. One month after treatment, bone scans revealed possible metastasis in the right skull, lumbar and left ileum, soft neck tissue, lungs, collarbone, humeri, vertebrae, liver and abdominal lymph nodes. No further therapy was recommended due to the poor condition of the patient. The patient died 5 months later.
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Affiliation(s)
- LiZhao Chen
- Department of Neurosurgery, Institute of Surgery Research, Daping Hospital, Third Military Medical University, 10#, Changjiang Branch, Daping, Yuzhong District, Chongqing 400042, People's Republic of China
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16
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Yang C, Gao J, Wang HY, Liu Q, Xu MH, Wang ZG, Jiang JX. Effects of hypothalamus destruction on the level of plasma corticosterone after blast injury and its relation to interleukin-6 in rats. Cytokine 2011; 54:29-35. [DOI: 10.1016/j.cyto.2010.12.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2010] [Revised: 12/06/2010] [Accepted: 12/13/2010] [Indexed: 01/22/2023]
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Chen L, Xu M, Zou Y. Treatment of trigeminal neuralgia with percutaneous glycerol injection into Meckel's cavity: experience in 4012 patients. Cell Biochem Biophys 2011; 58:85-9. [PMID: 20717747 DOI: 10.1007/s12013-010-9094-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Percutaneous glycerol injection into Meckel's cavity is widely used to treat trigeminal neuralgia. Reports published to date summarized clinical experiences in small or intermediately sized groups of patients. The efficacy of this procedure in a large group of patients has not been evaluated so far. From December 1983 to November 2008, patients with primary trigeminal neuralgia were treated in our clinic using percutaneous glycerol injection into Meckel's cavity which was conducted according to the Hakanson's anterior puncture method with some modifications. In total, 4012 patients (2205 female) with a mean age of 56.5 (23-87) years were treated. The majority of patients (99.23%) experienced unilateral pain, while a small cohort of patients (31; 0.77%) had bilateral pain. The immediate success rate of the procedure was 97.1%. There was a significant (P < 0.01) positive correlation between the presence of cerebrospinal fluid (CSF) outflow and the curative effect. Follow-up was done in 3157 patients for the period of 1-25 years. The long-term success rate was 81.18%. No serious adverse effects were observed. The procedure is very effective and applicable to a wide variety of patients with trigeminal neuralgia. The presence of CSF outflow during puncture predicts better immediate and long-term outcomes.
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Affiliation(s)
- LiZhao Chen
- Department of NeuroSurgery, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Changjiang Branch, Daping, Yuzhong District, Chongqing 400042, China
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18
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Xu MH, Gong YS, Su MS, Dai ZY, Dai SS, Bao SZ, Li N, Zheng RY, He JC, Chen JF, Wang XT. Absence of the adenosine A2A receptor confers pulmonary arterial hypertension and increased pulmonary vascular remodeling in mice. J Vasc Res 2010; 48:171-83. [PMID: 20938208 DOI: 10.1159/000316935] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2009] [Accepted: 05/24/2010] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND Pulmonary arterial hypertension (PAH) is characterized by sustained elevation of pulmonary vascular resistance resulting from endothelial and smooth muscle cell dysfunction and collagen deposition in pulmonary vascular walls. In this study, we investigated the role of the adenosine A(2A) receptor (A(2A)R) in the development of PAH by determining the effect of genetic inactivation of A(2A)Rs on pulmonary vascular remodeling in mice. METHODS AND RESULTS We characterized hemodynamic, histological and ultrastructural changes in pulmonary vascular remodeling in A(2A)R knockout (KO) mice compared with their wild-type (WT) littermates after exposure to normoxia and hypoxic conditions. After exposure to normoxia, compared to WT mice, A(2A)R KO mice displayed: (1) increased right ventricular systolic pressures and an elevated ratio of the right ventricle over left ventricle plus septum (Fulton index), (2) increased wall area and thickness as well as enhanced smooth muscle actin immunoreactivity in pulmonary resistance vessels, (3) increased proliferating cell nuclear antigen-positive cells in pulmonary resistance vessels and (4) increased smooth muscle cells hypertrophy and collagen deposition in the adventitia of pulmonary arteriole walls as revealed by electron microscope. By contrast, histological analysis revealed no features of hypertensive nephropathy in A(2A)R KO mice and there was no significant difference in systemic blood pressure, and left ventricular masses among the 3 genotypes. Furthermore, following chronic exposure to hypoxia, A(2A)R KO mice exhibited exacerbated elevation in right ventricular systolic pressure, hypertrophy of pulmonary resistance vessels and increased cell proliferation in pulmonary resistance vessels, compared to WT littermates. Thus, genetic inactivation of A(2A)Rs selectively produced PAH and associated increased smooth muscle proliferation and collagen deposition. CONCLUSIONS Extracellular adenosine acting at A(2A)Rs represents an important regulatory mechanism to control the development of PAH and pulmonary vascular remodeling.
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Affiliation(s)
- M H Xu
- The Experimental Neurobiology Research Institute, Wenzhou Medical College, Zhejiang, PR China
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19
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Zhang J, Wang KX, Wei Y, Xu MH, Su JM, Bao YG, Zhao SY. [Effect of topiramate and carbamazepine on bone metabolism in children with epilepsy]. Zhongguo Dang Dai Er Ke Za Zhi 2010; 12:96-98. [PMID: 20199720] [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: 05/28/2023]
Abstract
OBJECTIVE To assess bone health in epileptic children who have been treated with topiramate (TPM) or carbamazepine (CBZ). METHODS Sixty-three epileptic children who received TPM or CBZ treatment and 36 eileptic children who did not receive any drug treatment (control group) were enrolled. Bone mineral density (BMD) at lumbar vertebrae (L1-L4) and radius-ulna was evaluated by the dual-energy X-ray absorptiometry method. Biochemical indices of bone metabolism, including serum calcium, phosphorus and alkaline phosphatase contents were measured. RESULTS The serum calcium content was higher in the TPM group (2.41+/-0.17 mmol/L), but it was lower in the CBZ group (2.15+/-0.26 mmol/L) than that (2.26+/-0.11 mmol/L) in the control group (p<0.05). The serum phosphorus content in both the TPM (1.55+/-0.17 mmol/L) and the CBZ groups (1.52+/-0.26 mmol/L) was significantly lower than that in the control group (1.70+/-0.30 mmol/L) (p<0.05). There were no significant differences in the serum content of alkaline phosphatase between three groups. BMD was significantly reduced in both the TPM and the CBZ groups when compared to the control group (p<0.05). CONCLUSIONS TPM and CBZ may result in alterations in serum contents of calcium, phosphorus and alkaline phosphatase as well as BMD reduction.
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Affiliation(s)
- Jing Zhang
- Department of Pediatrics, Jinghua Central Hospital, Jinghua, Zhejiang 321000, China
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20
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Chen LM, Kando M, Xu MH, Li YT, Koga J, Chen M, Xu H, Yuan XH, Dong QL, Sheng ZM, Bulanov SV, Kato Y, Zhang J, Tajima T. Study of x-ray emission enhancement via a high-contrast femtosecond laser interacting with a solid foil. Phys Rev Lett 2008; 100:045004. [PMID: 18352290 DOI: 10.1103/physrevlett.100.045004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2006] [Indexed: 05/26/2023]
Abstract
We observed the increase of the conversion efficiency from laser energy to Kalpha x-ray energy (eta(K)) produced by a 60 fs frequency doubled high-contrast laser pulse focused on a Cu foil, compared to the case of the fundamental laser pulse. eta(K) shows a strong dependence on the nonlinearly modified rising edge of the laser pulse. It reaches a maximum for a 100 fs negatively modified pulse. The hot electron efficient heating leads to the enhancement of eta(K). This demonstrates that high-contrast lasers are an effective tool for optimizing eta(K), via increasing the hot electrons by vacuum heating.
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Affiliation(s)
- L M Chen
- Advanced Photon Research Center, Kansai Photon Science Institute, JAEA, Kyoto 619-0215, Japan
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21
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Yuan XH, Li YT, Xu MH, Zheng ZY, Yu QZ, Liang WX, Zhang Y, Liu F, Bernhardt J, Wang SJ, Wang ZH, Ling WJ, Wei ZY, Zhao W, Zhang J. Effective fast electron acceleration along the target surface. Opt Express 2008; 16:81-86. [PMID: 18521134 DOI: 10.1364/oe.16.000081] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The dependence of angular distributions of fast electrons generated in the interaction of p-polarized femtosecond laser pulses with foil targets on laser intensities is investigated. A novel fast electron beam along the front target surface is observed for high laser intensity. It is found that the electron acceleration along the target surface is more efficient than those in other directions.
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Affiliation(s)
- X H Yuan
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing
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22
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Li YT, Xu MH, Yuan XH, Wang WM, Chen M, Zheng ZY, Sheng ZM, Yu QZ, Zhang Y, Liu F, Jin Z, Wang ZH, Wei ZY, Zhao W, Zhang J. Effect of target shape on fast electron emission in femtosecond laser-plasma interactions. Phys Rev E Stat Nonlin Soft Matter Phys 2008; 77:016406. [PMID: 18351943 DOI: 10.1103/physreve.77.016406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2007] [Revised: 11/06/2007] [Indexed: 05/26/2023]
Abstract
Fast electron emission from the interaction of femtosecond laser pulses with shaped solid targets has been studied. It is found that the angular distributions of the forward fast electrons are highly dependent upon the target shapes. The important roles played by the electrostatic fields built up at the non-laser-irradiated target surfaces and the collisions in the target are identified. Our two-dimensional particle-in-cell simulations with binary collisions included reproduce the main experimental observations.
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Affiliation(s)
- Y T Li
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China
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23
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Carroll DC, McKenna P, Lundh O, Lindau F, Wahlström CG, Bandyopadhyay S, Pepler D, Neely D, Kar S, Simpson PT, Markey K, Zepf M, Bellei C, Evans RG, Redaelli R, Batani D, Xu MH, Li YT. Active manipulation of the spatial energy distribution of laser-accelerated proton beams. Phys Rev E Stat Nonlin Soft Matter Phys 2007; 76:065401. [PMID: 18233889 DOI: 10.1103/physreve.76.065401] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2007] [Revised: 09/28/2007] [Indexed: 05/25/2023]
Abstract
The spatial energy distributions of beams of protons accelerated by ultrahigh intensity (>10(19)Wcm2) picosecond laser pulse interactions with thin foil targets are investigated. Using separate, low intensity (<10(13)Wcm2) nanosecond laser pulses, focused onto the front surface of the target foil prior to the arrival of the high intensity pulse, it is demonstrated that the proton beam profile can be actively manipulated. In particular, results obtained with an annular intensity distribution at the focus of the low intensity beam are presented, showing smooth proton beams with a sharp circular boundary at all energies, which represents a significant improvement in the beam quality compared to irradiation with the picosecond beam alone.
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Affiliation(s)
- D C Carroll
- SUPA, Department of Physics, University of Strathclyde, Glasgow G4 0NG, United Kingdom
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24
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Li YT, Yuan XH, Xu MH, Zheng ZY, Sheng ZM, Chen M, Ma YY, Liang WX, Yu QZ, Zhang Y, Liu F, Wang ZH, Wei ZY, Zhao W, Jin Z, Zhang J. Observation of a fast electron beam emitted along the surface of a target irradiated by intense femtosecond laser pulses. Phys Rev Lett 2006; 96:165003. [PMID: 16712242 DOI: 10.1103/physrevlett.96.165003] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2005] [Revised: 02/15/2006] [Indexed: 05/09/2023]
Abstract
A novel fast electron beam emitting along the surface of a target irradiated by intense laser pulses is observed. The beam is found to appear only when the plasma density scale length is small. Numerical simulations reveal that the electron beam is formed due to the confinement of the surface quasistatic electromagnetic fields. The results are of interest for potential applications of fast electron beams and deep understanding of the cone-target physics in the fast ignition related experiments.
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Affiliation(s)
- Y T Li
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China
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25
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Jin Z, Zhang J, Xu MH, Lu X, Li YT, Wang ZH, Wei ZY, Yuan XH, Yu W. Control of filamentation induced by femtosecond laser pulses propagating in air. Opt Express 2005; 13:10424-10430. [PMID: 19503257 DOI: 10.1364/opex.13.010424] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Filamentation formed by self-focusing of intense laser pulses propagating in air is investigated. It is found that the position of filamentation can be controlled continuously by changing the laser power and divergence angle of the laser beam. An analytical model for the process is given.
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26
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Liao ZY, Tang YH, Xu MH, Feng YM, Zhu SQ. B9-serine residue is crucial for insulin actions in glucose metabolism. Acta Pharmacol Sin 2001; 22:939-43. [PMID: 11749779] [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: 02/23/2023] Open
Abstract
AIM To explore the importance of B9 and B10 amino acid residues in the insulin molecule. METHODS The [B9Glu, B10Asp] insulin (E,D-insulin) receptor binding activity, glucose upta ke activity, and lipogenesis activity were measured in isolated adipocytes. The translocation of glucose transporter 4 (Glut4) and the phosphorylation of insulin receptor (IR) stimulated by E, D-insulin were determined by Western blotting. RESULTS Compared with native insulin, the receptor binding activity of E,D-insulin was 31 %; the stimulating activity of E,D-insulin in glucose transport and lipogenesis were 45 % and 40 % respectively; the stimulations of Glut4 translocation and insulin receptor autophosphorylation of E,D-insulin were about 58 % and 46 % respectively. CONCLUSION B9-serine residue is crucial for insulin actions in glucose metabolism.
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Affiliation(s)
- Z Y Liao
- Institute of Biochemistry, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
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27
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Xu MH, Wang W, Xia LJ, Lin GQ. Development of a New Reaction System for the Synthesis of Highly Optically Active α,γ-Substituted γ-Butyrolactones. J Org Chem 2001; 66:3953-62. [PMID: 11375020 DOI: 10.1021/jo0155153] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A highly useful method for the synthesis of optically active alpha,gamma-substituted gamma-butyrolactones has been developed. The SmI(2)-induced reductive coupling of chiral 2-alkyl acrylates derived from isosorbide with ketones in the presence of (1S)-(-)-2,10-camphorsultam as a proton source give the chiral alpha,gamma-substituted gamma-butyrolactones in good yields and high enantiomeric purities (up to >99% ee for trans and 75% ee for cis). The reaction system has been investigated with various ketones, and it is demonstrated that this system is very effective for trans-alpha,gamma-substituted gamma-butyrolactones. Both the chiral auxiliary and the hindered proton source in this system are necessary for the observed excellent ee values of the products. The absolute configuration of the trans products is assigned on the basis of the X-ray crystal structure.
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Affiliation(s)
- M H Xu
- Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Lu, Shanghai 200032, P. R. China
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28
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Xu MH, Wang W, Lin GQ. A highly efficient asymmetric synthesis of optically active alpha, gamma-substituted gamma-butyrolactones using a chiral auxiliary derived from isosorbide. Org Lett 2000; 2:2229-32. [PMID: 10930250 DOI: 10.1021/ol005978f] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Using an easily accessible and inexpensive chiral auxiliary derived from isosorbide, optically active alpha,gamma-substituted gamma-butyrolactones were obtained in high enantiomeric purity (up to >99% ee for trans) by the SmI(2)-induced reductive coupling of chiral methacrylate 7 with ketones in the presence of (-)-sultam as a proton source.
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Affiliation(s)
- M H Xu
- Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenlin Lu, Shanghai 200032, P. R. China
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Xie ZM, Mao QF, Xu MH, Gu PD, Xie ZJ. [Phenomenon of intrinsic rhythm of luteinizing hormone release from isolated anterior pituitary gland of female rat]. Sheng Li Xue Bao 1997; 49:649-56. [PMID: 9863187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
The intrinsic nature of rthymic release of luteinizing hormone (LH) of isolated human and rat anterior pituitary gland reported independently by Macro Gambacciani and Xie in 1987 can be more directly demonstrated by a computer programme of Time Series-HSY Hidden Periodic Analytic Approach for continuous monitoring the LH output of the perfusate from a perfusion system with in vitro anterior pituitary of SD female rat. The results are as follows: (1) Under various reproductive conditions the average frequency (min/cycle) and amplitude (ng/ml) of the intrinsic rhythm of LH release were quite different: In proestrous group the frequency and amplitude were the highest, being intermediate in the ovariectomized group and lowest in the lactation group. (2) The intrinsic rhythm of LH release could be changed by either peptide or steroid hormones. In proestrous group with 30 min of gonadotropin-releasing hormone (GnRH), stimulation would reduce both frequency and amplitude. In case of lactation, the frequency was unchanged, but amplitude lowered, while in the ovariectomized rat pituitary, the 30 min GnRH stimulation decreased the frequency of release only. The intrinsic rhythm of the LH release could also be influenced by steriod hormones (Ru486 and Anordrin). With 120 min before removal of the anterior pituitary gland the rats receiving i.m. injection of Ru486 (2 mg/kg bw) or Anordrin (2 mg/kg), the results showed that Ru486 decreased frequency, while Anordrin decreased only the frequency to a less extent, both without amplitude affected. (3) Verapamil and EGTA added to the perfusion system did not abolish but only decreased the rhythmic phenomenon by using proestrous pitutary. This suggests that participation of Ca2+ may take place in the intrinsic release of LH. The above results indicated that the intrinsic rhythm of LH release of isolated anterior pituitary gland is different from various reproductive hormonal conditions and capable of being modified by exogenous hormones. The physiological function of the intrinsic rhythm of LH release of anterior pituitary gland remains to be elucidated.
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Affiliation(s)
- Z M Xie
- Shanghai Institute of Planned Parenthood Research, WHO Collaborating Center for Research in Human Reproduction
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Zhang ZG, Xu MH, Wang MQ. [Immunohistochemical study on estrogen receptors in conventionally formalin-fixed, paraffin-embedded tissues of endometrial carcinoma]. Zhonghua Fu Chan Ke Za Zhi 1994; 29:667-9, 699-700. [PMID: 7712889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Using specific monoclonal antibody to human estrogen receptors (ER), monoclonal antibody H222, with an avidin-biotin-peroxidase complex method, immunohistochemical localization of ER was performed on formalin-fixed, paraffin-embedded tissues of 42 endometrial carcinomas. The paraffin sections were preceded by trypsin treatment to expose antigenic sites. Immunohistochemical evaluation incorporated both the intensity and distribution of staining into a semiquantitative analysis. Specific staining for ER was observed only in the nuclei of epithelial, stromal and malignant cells. No specific cytoplasmic staining was observed in all paraffin sections. ER-positive staining [histologic score (H-score) > or = 75] was found in 23 (54.8%) of 42 samples and the ER H-Score of cancer components was significantly associated with the histological grade of endometrial carcinomas (P < 0.05). The ER-positive patients tended to have a better prognosis than ER-negative ones. Thus, it may be concluded that the treated formalin-fixed, paraffin-embedded tissues are still suitable for detecting ER by the immunohistochemical method, and the ER content of endometrial carcinomas is useful in indicating the differentiation of cancer and in predicting the patient's prognosis.
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Affiliation(s)
- Z G Zhang
- Affiliated Hospital, Shandong Medical University, Jinan
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Hua XY, Xu MH, Lin QD. [Prenatal diagnosis of Duchenne's muscular dystrophy fetus at risk]. Zhonghua Fu Chan Ke Za Zhi 1994; 29:408-10, 445. [PMID: 8001417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Prenatal diagnosis of Duchenne's muscular dystrophy (DMD) have been carried out on 12 fetus at risk. The gene mutations have been identified by hybridization with cDNA probes and/or multiplex PCR. The fetus examined were 7 males and 3 females. Three of the male fetus inherited the same deleted mutations as the probands, and other 4 appeared normal. Among the 3 female fetus, one carried a deleted gene, two were considered normal. The diagnosis of the fetus were confirmed after birth or abortion. As the multiplex PCR can quickly detect about 98% of the deletions on the dystrophin gene, it is not only an idea method for screening the gene deletion but can also be applied to prenatal diagnosis immediately after the nature of the deletion have been identified among the probands. The strategy of prenatal diagnosis of DMD in our country was also discussed.
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Affiliation(s)
- X Y Hua
- University of Medical Sciences, Guangzhou
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Lu WY, Hsieh CM, Xu MH, Nan ZY. [Comparison of the effect of various dosages of anordrin and levonorgestrel on the pituitary responsiveness to GnRH]. Sheng Li Xue Bao 1988; 40:271-7. [PMID: 3142042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Yang LZ, Hsieh CM, Xu MH, Yang AL. [Studies on the spontaneous contraction and the response to NE of isolated oviductal isthmic muscle from Chinese women under different ovarian hormonal conditions]. Sheng Li Xue Bao 1987; 39:365-72. [PMID: 3686055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Hsieh CM, Zhao BG, Xu MH. [Effect of anordrin on the rat anterior pituitary responsiveness to GnRH in vitro]. Sheng Li Xue Bao 1985; 37:486-91. [PMID: 3915600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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