10,238 research outputs found
Force-Guiding Particle Chains for Shape-Shifting Displays
We present design and implementation of a chain of particles that can be
programmed to fold the chain into a given curve. The particles guide an
external force to fold, therefore the particles are simple and amenable for
miniaturization. A chain can consist of a large number of such particles. Using
multiple of these chains, a shape-shifting display can be constructed that
folds its initially flat surface to approximate a given 3D shape that can be
touched and modified by users, for example, enabling architects to
interactively view, touch, and modify a 3D model of a building.Comment: 6 pages, 5 figure, submitted to IROS 201
Fabrication of high quality sub-micron Au gratings over large areas with pulsed laser interference lithography for SPR sensors
Metallic gratings were fabricated using high energy laser interference
lithography with a frequency tripled Nd:YAG nanosecond laser. The grating
structures were first recorded in a photosensitive layer and afterwards
transferred to an Au film. High quality Au gratings with a period of 770 nm and
peak-to-valley heights of 20-60 nm exhibiting plasmonic resonance response were
successfully designed, fabricated and characterized.Comment: 10 pages, 7 figure
Differential expression profile of CXCR3 splicing variants is associated with thyroid neoplasia. Potential role in papillary thyroid carcinoma oncogenesis?
Indexación: Scopus.Papillary thyroid cancer (PTC) is the most prevalent endocrine neoplasia. The increased incidence of PTC in patients with thyroiditis and the frequent immune infiltrate found in PTC suggest that inflammation might be a risk factor for PTC development. The CXCR3-ligand system is involved in thyroid inflammation and CXCR3 has been found upregulated in many tumors, suggesting its pro-tumorigenic role under the inflammatory microenvironment. CXCR3 ligands (CXCL4, CXCL9, CXCL10 and CXCL11) trigger antagonistic responses partly due to the presence of two splice variants, CXCR3A and CXCR3B. Whereas CXCR3A promotes cell proliferation, CXCR3B induces apoptosis. However, the relation between CXCR3 variant expression with chronic inflammation and PTC development remains unknown. Here, we characterized the expression pattern of CXCR3 variants and their ligands in benign tumors and PTC. We found that CXCR3A and CXCL10 mRNA levels were increased in non-metastatic PTC when compared to non-neoplastic tissue. This increment was also observed in a PTC epithelial cell line (TPC-1). Although elevated protein levels of both isoforms were detected in benign and malignant tumors, the CXCR3A expression remained greater than CXCR3B and promoted proliferation in Nthy-ori-3-1 cells. In non-metastatic PTC, inflammation was conditioning for the CXCR3 ligands increased availability. Consistently, CXCL10 was strongly induced by interferon gamma in normal and tumor thyrocytes. Our results suggest that persistent inflammation upregulates CXCL10 expression favoring tumor development via enhanced CXCR3A-CXCL10 signaling. These findings may help to further understand the contribution of inflammation as a risk factor in PTC development and set the basis for potential therapeutic studies.http://www.oncotarget.com/index.php?journal=oncotarget&page=article&op=view&path[]=23502&path[]=7402
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