3326
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Song CL, Wang YL, Cheng P, Jiang YP, Li W, Zhang T, Li Z, He K, Wang L, Jia JF, Hung HH, Wu C, Ma X, Chen X, Xue QK. Direct Observation of Nodes and Twofold Symmetry in FeSe Superconductor. Science 2011; 332:1410-3. [DOI: 10.1126/science.1202226] [Citation(s) in RCA: 333] [Impact Index Per Article: 25.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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3327
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Yang Y, Wang H, Dou Y, Wang Y, Han G, Wang R, Wang L, Guo R, Xiao H, Li X, Shen B, Shi Y, Chen G, Li Y. Colitogenic role of tumour necrosis factor (TNF) receptors in trinitrobenzene sulphonic acid colitis: TNF-R1 ablation does not affect systemic inflammatory response. Clin Exp Immunol 2011; 165:372-82. [PMID: 21668898 DOI: 10.1111/j.1365-2249.2011.04413.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Tumour necrosis factor (TNF)-α plays a critical role in the pathogenesis of T helper type 1-mediated colitis such as Crohn's disease. However, the roles of its two receptors in mediating pathology remain largely unknown. In this study, trinitrobenzene sulphonic acid (TNBS) was used to induce colitis in TNF-receptor single or double knock-out (DKO) BALB/c mice and in wild-type counterparts. TNF-R1(-/-) mice had significantly less weight loss, reduced mortality, colon shortening and oedema, colon histological damage and lower levels of colon myeloperoxidase compared with wild-type (WT) BALB/c mice. A similar manifestation was also observed in TNF-R2(-/-) and TNF-R1(-/-) TNF-R2(-/-) (TNF-R DKO) mice. Strikingly, systemic inflammatory response (including splenomegaly and monocyte expansion) was found in WT and TNF-R1(-/-) mice after TNBS, instead of TNF-R2(-/-) and TNF-R DKO mice. Attenuated pathology of colitis in TNF-R1(-/-) or TNF-R2(-/-) mice correlated with lower amounts of interleukin (IL)-6, IL-1β, monocyte chemotactic protein (MCP)-1, IL-12p70 and interferon (IFN)-γ production in the colons. Importantly, ablation of TNF-R1 or TNF-R2 reduced the number of terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate nick end-labelling (TUNEL)-positive apoptotic epithelial cells in the affected colons compared with WT TNBS-instilled controls, which might be due to the heightened ratio of Bcl-2/Bax and reduced activity of nuclear factor (NF)-κB. These findings suggest that either TNF-R1 or TNF-R2 plays a pathogenic role in the pathology of colitis and TNF signalling via TNF-R1 or TNF-R2 alone is not sufficient for inducing mucosal damage.
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3328
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Liang Y, Wu X, Zhang J, Yang Y, Wang L, Bai X, Yu Q, Li N, Li Z. Treatment of Multi-Drug-Resistant Tuberculosis in Mice with DNA Vaccines Alone or in Combination with Chemotherapeutic Drugs. Scand J Immunol 2011; 74:42-6. [DOI: 10.1111/j.1365-3083.2011.02538.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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3329
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Li T, Zeng ZC, Wang L, Qiu SJ, Zhou JW, Zhi XT, Yu HH, Tang ZY. Radiation enhances long-term metastasis potential of residual hepatocellular carcinoma in nude mice through TMPRSS4-induced epithelial-mesenchymal transition. Cancer Gene Ther 2011; 18:617-26. [PMID: 21637307 DOI: 10.1038/cgt.2011.29] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Recurrence and metastasis are frequently observed after radiotherapy for hepatocellular carcinoma (HCC), although upregulation of matrix metalloproteinases (MMPs) and vascular endothelial growth factor (VEGF) induced by radiation has been claimed to be involved, the mechanism is not clarified yet. In the present study, by using MHCC97L, a human HCC cell line with metastatic potential, and its xenograft in nude mice, we found that radiation induced a 48- to 72-h temporary increase in the expression of MMP-2 and VEGF both in vitro and in vivo, but only the in vitro invasiveness of MHCC97L cells was enhanced, while the in vivo metastatic potential of tumors was suppressed. Whereas, 30 days after radiation, when the expression of MMP-2 and VEGF decreased to unirradiated control levels, the in vivo dissemination and metastatic potential of residual tumors have just begun to increase with overexpression of TMPRSS4, which induced loss of E-cadherin through induction of Smad-Interacting Protein 1 (SIP1), an E-cadherin transcriptional repressor, and led to epithelial-mesenchymal transition (EMT). This process was blocked by treatment of siRNA-TMPRSS4. In conclusion, our study revealed novel findings regarding the biphasic effect of radiation on the metastatic potential of residual HCC. Overexpression of TMPRSS4 has a critical role in radiation-induced long-term dissemination and metastasis of residual HCC by facilitating EMT. These findings may provide new clues to suppress the radiation-induced dissemination and metastasis, thereby improve the prognosis of HCC patients.
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3330
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Fohr F, Kaltenborn S, Hamrle J, Schultheiss H, Serga AA, Schneider HC, Hillebrands B, Fukuma Y, Wang L, Otani Y. Optical detection of spin transport in nonmagnetic metals. PHYSICAL REVIEW LETTERS 2011; 106:226601. [PMID: 21702621 DOI: 10.1103/physrevlett.106.226601] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2010] [Indexed: 05/31/2023]
Abstract
We determine the dynamic magnetization induced in nonmagnetic metal wedges composed of silver, copper, and platinum by means of Brillouin light scattering microscopy. The magnetization is transferred from a ferromagnetic Ni80Fe20 layer to the metal wedge via the spin pumping effect. The spin pumping efficiency can be controlled by adding an insulating interlayer between the magnetic and nonmagnetic layer. By comparing the experimental results to a dynamical macroscopic spin-transport model we determine the transverse relaxation time of the pumped spin current which is much smaller than the longitudinal relaxation time.
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3331
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Cao Y, Gao C, Wang L, Chi Z, Han C. SU-E-J-124: Comparison of Infrared Marker-Based Positioning System and EPID for the Measurement of Setup Errors. Med Phys 2011. [DOI: 10.1118/1.3611892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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3332
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Jin L, Li JS, Wang L, Fan J, Price R, Ma C. SU-E-T-402: Modulated Electron Radiotherapy Dose Delivery Using Photon Multileaf Collimators. Med Phys 2011. [DOI: 10.1118/1.3612356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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3333
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Li JS, Lin MH, Wang L, Ma CM. SU-E-T-431: Dosimetric Uncertainties in RapidArc Treatment. Med Phys 2011. [DOI: 10.1118/1.3612385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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3334
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Xi J, Zhang L, Wang L, Miao X, Liu Y, Tian X, Bu G, Lu Q, Deng R. Establishment of a stable mouse FcγRIII COS7 cell line exhibiting native receptor activity. JOURNAL OF APPLIED ANIMAL RESEARCH 2011. [DOI: 10.1080/09712119.2011.558685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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3335
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Wang L. L 1-estimation for the location parameters in stochastic volatility models. MATHEMATICAL METHODS OF STATISTICS 2011. [DOI: 10.3103/s1066530711020062] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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3336
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Xue J, Liu H, Chen X, Lin M, Dong Z, Wang L, Chen L, Ma C. SU-E-T-277: Image-Guided Radiation Therapy: The Accuracy of CT-MR Fusion for Prostate Treatment Planning. Med Phys 2011. [DOI: 10.1118/1.3612228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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3337
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Wang L, Uzan J, Nahum A, Fan J, Jin L, Ma C. SU-E-T-09: Investigate the Impact of Prolonged Treatment Delivery Time on Tumor Control Probability. Med Phys 2011. [DOI: 10.1118/1.3611959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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3338
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Kielar K, Mok E, Wang L, Luxton G, Maxim P, Hsu A, Xing L. SU-E-T-540: Verification of Dosimetric Accuracy on the TrueBeam STx: Rounded Leaf Effect of the High Definition MLC. Med Phys 2011. [DOI: 10.1118/1.3612502] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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3339
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Fan J, Fourka E, Hayes S, Jin L, Wang L, Price R, Ma C. SU-E-T-887: Cyberknife Treatment for Early Stage Oral Tongue Cancer - Feasibility Study. Med Phys 2011. [DOI: 10.1118/1.3612851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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3340
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Wang L, Fan J, Lin T, Jin L, Ma C. SU-E-T-521: Is Cone Beam CT (CBCT) Equivalent to 4-Dimensinoal (4D) MIP Images to Account for Target Motion in SBRT Lung Treatment? Med Phys 2011. [DOI: 10.1118/1.3612474] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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3341
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Fan J, Hayes S, Jin L, Wang L, Yang J, Ma C. SU-E-T-876: Comparison of Dose Distributions for Plans Optimized by Using Monte Carlo and Ray-Tracing Algorithms for the Treatment of Lung Tumors with CyberKnife. Med Phys 2011. [DOI: 10.1118/1.3612840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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3342
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Myint KZ, Ma C, Wang L, Xie XQ. Fragment-similarity-based QSAR (FS-QSAR) algorithm for ligand biological activity predictions. SAR AND QSAR IN ENVIRONMENTAL RESEARCH 2011; 22:385-410. [PMID: 21598200 DOI: 10.1080/1062936x.2011.569943] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Quantitative structure-activity relationship (QSAR) studies are useful computational tools often used in drug discovery research and in many scientific disciplines. In this study, a robust fragment-similarity-based QSAR (FS-QSAR) algorithm was developed to correlate structures with biological activities by integrating fragment-based drug design concept and a multiple linear regression method. Similarity between any pair of training and testing fragments was determined by calculating the difference of lowest or highest eigenvalues of the chemistry space BCUT matrices of corresponding fragments. In addition to the BCUT-similarity function, molecular fingerprint Tanimoto coefficient (Tc) similarity function was also used as an alternative for comparison. For validation studies, the FS-QSAR algorithm was applied to several case studies, including a dataset of COX2 inhibitors and a dataset of cannabinoid CB2 triaryl bis-sulfone antagonist analogues, to build predictive models achieving average coefficient of determination (r(2)) of 0.62 and 0.68, respectively. The developed FS-QSAR method is proved to give more accurate predictions than the traditional and one-nearest-neighbour QSAR methods and can be a useful tool in the fragment-based drug discovery for ligand activity prediction.
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3343
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Xiao C, Xu B, Ye H, Yang Q, Wang L, Sun YH. Experience with adrenal schwannoma in a Chinese population of six patients. J Endocrinol Invest 2011; 34:417-21. [PMID: 20543556 DOI: 10.1007/bf03346705] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
OBJECTIVES Benign adrenal schwannoma is an extremely uncommon cause of incidentaloma. This article describes our experience with the diagnosis and treatment of adrenal schwannoma in a Chinese population of 6 patients. To our knowledge, this is the largest series of this uncommon adrenal tumor treated in a single center. METHODS From May 1999 to May 2009, 6 patients with incidentally discovered adrenal schwannoma were operated on at a tertiary referral hospital in Eastern China. Clinical details, radiographic features, laboratory examinations, pathological findings, and follow-up data of these patients were analyzed. RESULTS Of the 6 patients, 4 were females (F) and 2 were males (M), with a mean age of 40.5 yr (range: 30-47, M:F=2:1). The 6 patients were managed with open unilateral adrenalectomy; 5 patients had schwannomas on the left side, and 1 on right side. Abnormal urine catecholamine was detected in 1 patient. The mean pathological size of these tumors was 4.3 ± 1.1 cm. The diagnosis of schwannoma was based on classic histological findings, and supported by immunohistochemistry of S-100, vimentin, and ABC positivity. In the follow- up of 47.5 ± 32.3 months, no recurrence and metastasis were observed. CONCLUSIONS Although there may be some clues for radiological diagnosis of adrenal schwannoma, preoperative misdiagnosis is not infrequent. Those tumors may occasionally have endocrine function. Histological examination is the key of diagnosis, and surgical resection is the treatment of choice once malignancy cannot be excluded by preoperative analyses.
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3344
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Lin M, Li J, Wang L, Ma C. MO-D-BRB-04: EPID-Based 4D Patient Dose Verification for Lung SBRT Treatment. Med Phys 2011. [DOI: 10.1118/1.3612909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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3345
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Hossain M, Price R, Tafo AG, Veltchev I, Lin T, Wang L, Ma C. SU-E-T-69: A Broad Implementation of Treatment Planning System QA. Med Phys 2011. [DOI: 10.1118/1.3612020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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3346
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Sadagopan R, Wang L. SU-E-T-468: A Novel Complexity Index to Evaluate IMRT QA. Med Phys 2011. [DOI: 10.1118/1.3612422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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3347
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Jin L, Fan J, Wang L, Price R, Ma C. SU-E-T-552: Dosimetry Investigation of a PinPoint Ion Chamber for SRS Commissioning and Treatment Verification. Med Phys 2011. [DOI: 10.1118/1.3612514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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3348
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Wang L, Bao Y, Xu Y, Yang Y, Wang L, Si S, Cho S, Hong B. 148 SALVIANOLIC ACID B CAN INHIBIT MACROPHAGE UPTAKE OF MODIFIED-LDL BY DIRECTLY BINDING TO TYPE B SCAVENGER RECEPTOR CD36. ATHEROSCLEROSIS SUPP 2011. [DOI: 10.1016/s1567-5688(11)70149-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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3349
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Wang L, Perles L, Archambault L, Sahoo N, Beddar S, Mirkovic D. SU-C-224-05: Application of a Plastic Scintillation Detector in Measuring Depth-Dose Curves for Passive-Scattering Proton Beams. Med Phys 2011. [DOI: 10.1118/1.3611453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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3350
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Wang L, Kielar K, Mok E, Hsu A, Dieterich S, Xing L. SU-E-T-564: End-To-End Test for LINAC-Based SBRT with Onboard Planar and Volumetric Imaging System. Med Phys 2011. [DOI: 10.1118/1.3612526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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