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Schöberl F, Xiong G, Feil K, Bartenstein P, Fougere CL, Brandt T, Jahn K, Strupp M, Dieterich M, Zwergal A. V12. [18F]-FDG-PET imaging of the cerebral orthostatic tremor network during stance. Clin Neurophysiol 2015. [DOI: 10.1016/j.clinph.2015.04.090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Zwergal A, Günther L, Beck R, Xiong G, Eilles E, Lindner S, Bartenstein P, Fougere CL, Brandt T, Dieterich M. V30. In vivo imaging of cerebral glial activation after unilateral labyrinthectomy. Clin Neurophysiol 2015. [DOI: 10.1016/j.clinph.2015.04.108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Xu Q, Xing L, Xiong G, Elmore K, Min J. SU-E-I-41: Dictionary Learning Based Quantitative Reconstruction for Low-Dose Dual-Energy CT (DECT). Med Phys 2015. [DOI: 10.1118/1.4924038] [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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Xu Q, Xing L, Xiong G, Elmore K, Min J. SU-E-I-39: Combining Conventional Tomographic Imaging Strategy and Interior Tomography for Low Dose Dual-Energy CT (DECT). Med Phys 2015. [DOI: 10.1118/1.4924036] [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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Li C, Zuo W, Tong X, Hu H, Qiao L, Song J, Xiong G, Gao R, Dai F, Lu C. A composite method for mapping quantitative trait loci without interference of female achiasmatic and gender effects in silkworm,Bombyx mori. Anim Genet 2015; 46:426-32. [DOI: 10.1111/age.12311] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/15/2015] [Indexed: 11/27/2022]
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Rominger A, Cumming P, Brendel M, Xiong G, Zach C, Karch S, Tatsch K, Bartenstein P, la Fougère C, Koch W, Pogarell O. Altered serotonin and dopamine transporter availabilities in brain of depressed patients upon treatment with escitalopram: A [123 I]β-CIT SPECT study. Eur Neuropsychopharmacol 2015; 25:873-81. [PMID: 25819144 DOI: 10.1016/j.euroneuro.2014.12.010] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Revised: 11/25/2014] [Accepted: 12/24/2014] [Indexed: 01/13/2023]
Abstract
Altered SERT and DAT availabilities during treatment with escitalopram were investigated with [(123)I]2β-carbomethoxy-3β-(4-iodophenyl)tropane (β-CIT) SPECT in a series of patients fulfilling the criteria for unipolar major depressive disorder (MDD). 27 patients (10m, 42±16y) with diagnosis of MDD were recruited for the study. All patients underwent neuropsychiatric testing for assessment of Hamilton Depression (HAM-D) and Beck Depression Inventory (BDI) scores. At baseline, [(123)I]β-CIT SPECT recordings were acquired 4h (SERT-weighted) and 20-24h p.i (DAT-weighted). Follow-up scans and neuropsychiatric testing were performed after six weeks of stable escitalopram medication. Voxel-wise parametric maps of specific/ non-specific ratios-1 (~BPND) were calculated. At baseline, DAT-weighted BPND was 5.06±0.81 in striatum and SERT-weighted BPND was 0.94±0.18 in thalamus. There were significant negative correlations with age for DAT in striatum (R=-0.60; p<0.01) and SERT in thalamus (R=-0.45; p<0.05). Under SSRI treatment there was an apparent 42% occupancy of SERT in thalamus (p<0.0001), whereas DAT availability increased significantly by 20% in striatum (p<0.001); higher apparent SERT occupancy in thalamus was associated with lesser DAT increase in striatum (R=-0.62; p<0.005). The low apparent SERT occupancy may be confounded by alterations in SERT expression during treatment. Thus, [(123)I]β-CIT SPECT revealed age-dependent declines in DAT and SERT availabilities in un-medicated MDD patients, comparable to that seen previously in healthy controls. At follow-up, the SSRI-evoked increase in DAT was less pronounced in the older patients, even though apparent SERT occupancy and clinical improvement were not age-dependent. Present findings may have implications for escitalopram dosage and side effect profile in younger MDD patients.
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Zhao W, Niu T, Xing L, Xiong G, Elmore K, Zhu J, Wang L, Min J. MO-FG-204-03: Using Edge-Preserving Algorithm for Significantly Improved Image-Domain Material Decomposition in Dual Energy CT. Med Phys 2015. [DOI: 10.1118/1.4925424] [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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Lutz F, Xiong G, Jungblut R, Orlik-Eisel G, Göbel-Reifert A, Leidolf R. Pore-forming cytotoxin of Pseudomonas aeruginosa: the molecular effects and aspects of pathogenicity. ANTIBIOTICS AND CHEMOTHERAPY 2015; 44:54-8. [PMID: 1724893 DOI: 10.1159/000420297] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Cai KC, Liu DG, Wang YY, Wu H, Huang ZY, Cai RJ, Wang HF, Xiong G, Zhang ZL. Gefitinib maintenance therapy in Chinese advanced-stage lung adenocarcinoma patients with EGFR mutations treated with prior chemotherapy. Neoplasma 2015; 62:302-7. [PMID: 25591596 DOI: 10.4149/neo_2015_036] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
UNLABELLED The aim of this study was to determine the response of advanced-stage non-small cell lung cancer (NSCLC) patients with or without EGFR mutations to platinum-based chemotherapy with or without gefitinib maintenance. Patients were treated with four cycles of platinum-based chemotherapy. Patients with wild-type EGFR were observed (group 1; n=15). EGFR mutation-positive patients were randomly assigned to observation (group 2; n=7) or gefitinib maintenance (group 3; n=7). The median patient age was 59 years. The 1-year progression-free survival rates in groups 1, 2, and 3 were 6.7%, 28.6%, and 57.1%, respectively (p = 0.049); the 1-year overall survival rates were 53.3%, 57.1 %, and 100%, respectively (p = 0.111). The results indicate that patients with advanced-stage NSCLC with EGFR mutations have a better response to chemotherapy followed by gefitinib than chemotherapy alone and a better response to chemotherapy than wild-type patients. KEYWORDS chemotherapy, gefitinib, NSCLC, tyrosine kinase inhibitors.
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Xiong G, Gao Y, Guo S, Dai L, Liu K. Pathoanatomy and treatment modifications of metacarpophalangeal joint locking of the thumb. J Hand Surg Eur Vol 2015; 40:68-75. [PMID: 24369362 DOI: 10.1177/1753193413517621] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Ten patients with metacarpophalangeal joint locking of the thumb were studied. Three of them underwent surgical release. During surgery, it was found that the radial sesamoid was seated in a cartilage defect on the volar aspect of the metacarpal head. It appeared that the defect was created by the proximal edge of sesamoid. When the abductor pollicis brevis and flexor pollicis brevis muscles were partially detached from their insertion at the base of the proximal phalanx, the locking could be successfully released. We hypothesize the mechanism of the metacarpophalangeal joint locking of the thumb in our cases was a hyperextension injury that displaced the radial sesamoid distally and radially. In turn, the sesamoid's pointed proximal edge wore a groove in the cartilage on the metacarpal head, and under abductor pollicis brevis and flexor pollicis brevis tension, the radial sesamoid was locked into the cartilage defect; thereby causing locking of the joint.
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Taylor-Teeples M, Lin L, de Lucas M, Turco G, Toal TW, Gaudinier A, Young NF, Trabucco GM, Veling MT, Lamothe R, Handakumbura PP, Xiong G, Wang C, Corwin J, Tsoukalas A, Zhang L, Ware D, Pauly M, Kliebenstein DJ, Dehesh K, Tagkopoulos I, Breton G, Pruneda-Paz JL, Ahnert SE, Kay SA, Hazen SP, Brady SM. An Arabidopsis gene regulatory network for secondary cell wall synthesis. Nature 2014; 517:571-5. [PMID: 25533953 PMCID: PMC4333722 DOI: 10.1038/nature14099] [Citation(s) in RCA: 457] [Impact Index Per Article: 45.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Accepted: 11/20/2014] [Indexed: 12/15/2022]
Abstract
The plant cell wall is an important factor for determining cell shape, function and response to the environment. Secondary cell walls, such as those found in xylem, are composed of cellulose, hemicelluloses and lignin and account for the bulk of plant biomass. The coordination between transcriptional regulation of synthesis for each polymer is complex and vital to cell function. A regulatory hierarchy of developmental switches has been proposed, although the full complement of regulators remains unknown. Here, we present a protein-DNA network between Arabidopsis transcription factors and secondary cell wall metabolic genes with gene expression regulated by a series of feed-forward loops. This model allowed us to develop and validate new hypotheses about secondary wall gene regulation under abiotic stress. Distinct stresses are able to perturb targeted genes to potentially promote functional adaptation. These interactions will serve as a foundation for understanding the regulation of a complex, integral plant component.
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Zwergal A, Beck R, Günther L, Xiong G, Brandt T, Jahn K, Strupp M, Dieterich M, la Fougere C. Beeinflusst eine symptomlindernde Akuttherapie bei einseitigem Labyrinthausfall die zentrale vestibuläre Kompensation? KLIN NEUROPHYSIOL 2014. [DOI: 10.1055/s-0034-1371230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Schöberl F, Kugler G, Kohlbecher S, Werner P, Xiong G, la Fougere C, Schneider E, Brandt T, Dieterich M, Jahn K, Zwergal A. Hirnaktivierung während realer 3D-Navigation. KLIN NEUROPHYSIOL 2014. [DOI: 10.1055/s-0034-1371204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Zwergal A, Günther L, Beck R, Xiong G, Brandt T, Jahn K, Strupp M, Dieterich M, la Fougere C. N-Acetyl-L-leucine beschleunigt die vestibuläre Kompensation durch Modulation cerebellärer und thalamischer Plastizität. KLIN NEUROPHYSIOL 2014. [DOI: 10.1055/s-0034-1371190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Clark JN, Beitra L, Xiong G, Higginbotham A, Fritz DM, Lemke HT, Zhu D, Chollet M, Williams GJ, Messerschmidt M, Abbey B, Harder RJ, Korsunsky AM, Wark JS, Robinson IK. Ultrafast three-dimensional imaging of lattice dynamics in individual gold nanocrystals. Science 2013; 341:56-9. [PMID: 23704372 DOI: 10.1126/science.1236034] [Citation(s) in RCA: 136] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Key insights into the behavior of materials can be gained by observing their structure as they undergo lattice distortion. Laser pulses on the femtosecond time scale can be used to induce disorder in a "pump-probe" experiment with the ensuing transients being probed stroboscopically with femtosecond pulses of visible light, x-rays, or electrons. Here we report three-dimensional imaging of the generation and subsequent evolution of coherent acoustic phonons on the picosecond time scale within a single gold nanocrystal by means of an x-ray free-electron laser, providing insights into the physics of this phenomenon. Our results allow comparison and confirmation of predictive models based on continuum elasticity theory and molecular dynamics simulations.
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Schöberl F, Zwergal A, Engmann J, Kugler G, Kohlbecher S, Xiong G, Brandt T, Dieterich M, Schneider E, LaFougère C, Jahn K. Unterschiedliche Navigationsstrategien von Frauen und Männern in realer Umgebung und ihre Korrelate im Hirnaktivierungsmuster. KLIN NEUROPHYSIOL 2013. [DOI: 10.1055/s-0033-1337243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Zwergal A, Schöberl F, Kugler G, Kohlbecher S, Engler J, Xiong G, Brandt T, Dieterich M, Dichgans M, Bürger K, Schneider E, la Fougere C, Jahn K. Spatial orientation deficits in mild cognitive impairment. KLIN NEUROPHYSIOL 2013. [DOI: 10.1055/s-0033-1337246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Xiong G, Li B, Wang K, Li H. Chinese herb formulae for treatment of erectile dysfunction: a systematic review of randomised controlled clinical trials. Andrologia 2013; 46:201-23. [PMID: 23421655 DOI: 10.1111/and.12074] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/19/2012] [Indexed: 02/05/2023] Open
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Zwergal A, la Fougere C, Lorenzl S, Rominger A, Xiong G, Deutschenbaur L, Schoberl F, Linn J, Dieterich M, Brandt T, Strupp M, Bartenstein P, Jahn K. Functional disturbance of the locomotor network in progressive supranuclear palsy. Neurology 2013; 80:634-41. [DOI: 10.1212/wnl.0b013e318281cc43] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Deutschlander A, La Fougere C, Xiong G, Botzel K, Grunder G, Cumming P. Therapeutic Occupancy of the D2/3-Preferring Dopamine Receptor Agonist Pramipexol in Brains of Patients with Parkinson's Disease ([18F]-Fallypride PET Study) (P03.126). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.p03.126] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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47
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Zwergal A, Xiong G, Schlichtiger J, Schöberl F, Strupp M, Jahn K, Dieterich M, Bartenstein P, la Fougère C. Altersabhängigkeit der zentralen vestibulären Kompensation - Erkenntnisse einer vergleichenden mikroPET-Verhaltensstudie im Rattenmodell. KLIN NEUROPHYSIOL 2012. [DOI: 10.1055/s-0032-1301537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Deutschländer A, La Fougere C, Xiong G, Bötzel K, Gründer G, Cumming P. Therapeutic Occupancy of the D2/3-preferring Dopamine Receptor Agonist Pramipexol Parkinson's Disease ([18F]-fallypride PET study). KLIN NEUROPHYSIOL 2012. [DOI: 10.1055/s-0032-1301629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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49
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Xiong G, Xing L. Automated Bifurcation Detection in CT Images of the Lung. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.1186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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50
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Xiong G, Xing L. Bifurcation Trajectory Tracking in 4D CT Images of the Lung. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.1182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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